(19)
(11)EP 2 469 734 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
01.03.2017 Bulletin 2017/09

(21)Application number: 10809475.6

(22)Date of filing:  10.05.2010
(51)Int. Cl.: 
H04B 7/26  (2006.01)
H04L 5/00  (2006.01)
(86)International application number:
PCT/CN2010/072586
(87)International publication number:
WO 2011/020342 (24.02.2011 Gazette  2011/08)

(54)

METHOD AND SYSTEM FOR SENDING CHANNEL MEASUREMENT PILOT FREQUENCY

VERFAHREN UND SYSTEM ZUM SENDEN VON KANALMESSPILOTFREQUENZEN

PROCÉDÉ ET SYSTÈME DESTINÉS À ENVOYER UNE FRÉQUENCE PILOTE DE MESURE DE CANAL


(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

(30)Priority: 18.08.2009 CN 200910166177

(43)Date of publication of application:
27.06.2012 Bulletin 2012/26

(73)Proprietor: ZTE Corporation
Shenzhen, Guangdong 518057 (CN)

(72)Inventors:
  • JIANG, Jing
    Guangdong 518057 (CN)
  • ZHU, Changqing
    Guangdong 518057 (CN)
  • ZHANG, Chenchen
    Guangdong 518057 (CN)

(74)Representative: Modiano, Micaela Nadia et al
Modiano & Partners Thierschstrasse 11
80538 München
80538 München (DE)


(56)References cited: : 
EP-A2- 2 045 952
WO-A2-2008/115614
CN-A- 101 184 073
US-A1- 2009 034 484
WO-A1-2008/054128
CN-A- 101 162 987
CN-A- 101 286 762
US-A1- 2009 041 151
  
      
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description

    Field of the Invention



    [0001] The present invention relates to wireless communication systems and, in particular, is especially suitable for a method and system for sending a channel measurement reference signal on the LTE and LTE-Advanced user shared resources in the LTE-A.

    Background of the Invention



    [0002] In order to increase the throughput of cells and coordinate interference among cells, new generation wireless communication systems, such as Long-Term Evolution advance (abbreviated as LTE-Advance) system, International Mobile Telecommunication advance (abbreviated as IMT-Advance) system, etc., all introduce the Coordinate Multipoint Transmission and Reception (abbreviated as COMP hereafter) technology at network levels.

    [0003] Two kinds of reference signals of the LTE-Advanced are defined at the 56th conference of 3GPP LTE: channel measurement reference signal (abbreviated as CSI-RS hereafter) and demodulation reference signal (abbreviated as DMRS hereafter), wherein the demodulation reference signal is clearly defined as cell-specific, and relatively speaking, the demodulation reference signal is distributed more sparsely on time frequency resources. An example of reference signal design can be found in EP 2045952.

    [0004] However, how the channel measurement reference signal works in the LTE-A system and its mapping rules are not defined in details.

    Summary of the Invention



    [0005] The main object of the present invention is to provide a particular solution for designing a channel measurement reference signal so as to solve at least one of the above problems.

    [0006] A method for sending a channel measurement reference signal is provided according to one aspect of the present invention, in which each port of the channel measurement reference signal is sent using one subframe or two adjacent subframes during one sending period and each port of the channel measurement reference signal is sent repeatedly in full bandwidth with equal space in the unit of a predetermined composition unit.

    [0007] In this case, channel measurement reference signals with {1, 2, 4, 8} port(s) are newly designed, in which the pattern of the channel measurement reference signal with 1 port and that of the first port of the channel measurement reference signal with 2 ports are the same, the pattern of the channel measurement reference signal with 2 ports and that of the first 2 ports of the channel measurement reference signal with 4 ports are the same, and the frequency domain space of the equal space that the channel measurement reference signal predetermined composition unit is repeated with is {6, 8, 12, 16, 24, 30, 36, 42, 48}.

    [0008] The newly designed channel measurement reference signals are sent repeatedly in full bandwidth with equal space by taking one RB as the predetermined composition unit, and the channel measurement reference signal with 8 ports is located on the 14th OFDM symbol of the sending subframe, wherein the 0-port and 1-port of the channel measurement reference signal are mapped on the 1st and 2nd subcarriers adjacently, the 2-port and 3-port of the channel measurement reference signal are mapped on the 4th and 5th subcarriers adjacently, the 4-port and 5-port of the channel measurement reference signal are mapped on the 7th and 8th subcarriers adjacently, and the 6-port and 7-port of the channel measurement reference signal are mapped on the 10th and 11th subcarriers adjacently.

    [0009] Furthermore, the newly designed channel measurement reference signals are sent repeatedly in full bandwidth with equal space by taking two RBs as the predetermined composition unit, and the channel measurement reference signal with 8 ports is located on the 14th OFDM symbol of the sending subframe, wherein the 0 port of the channel measurement reference signal is mapped on the 1st, 9th, and 17th subcarriers, the 1-port of the channel measurement reference signal is mapped on the 2nd, 10th, and 18th subcarriers, the 2-port of the channel measurement reference signal is mapped on the 3rd, 11th, and 19th subcarriers, the 3-port of the channel measurement reference signal is mapped on the 4th, 12th, and 20th subcarriers, the 4-port of the channel measurement reference signal is mapped on the 5th, 13th, and 21st subcarriers, the 5-port of the channel measurement reference signal is mapped on the 6th, 14th, and 22nd subcarriers, the 6-port of the channel measurement reference signal is mapped on the 7th, 15th, and 23rd subcarriers, and the 7-port of the channel measurement reference signal is mapped on the 8th, 16th, and 24th subcarriers.

    [0010] Furthermore, the newly designed channel measurement reference signals are sent repeatedly in full bandwidth with equal space by taking one RB as the predetermined composition unit, and the channel measurement reference signal with 8 ports is located on the 11th and 14th OFDM symbols of the sending subframe, wherein on the 11th symbol, the 0-port and 1-port of the channel measurement reference signal are mapped on the 1st and 2nd subcarriers adjacently, the 2-port and 3-port of the channel measurement reference signal are mapped on the 4th and 5th subcarriers adjacently, the 4-port and 5-port of the channel measurement reference signal are mapped on the 7th and 8th subcarriers adjacently, and the 6-port and 7-port of the channel measurement reference signal are mapped on the 10th and 11th subcarriers adjacently; and on the 14th OFDN symbol, the 0-port and 1-port of the channel measurement reference signal are mapped on the 7th and 8th subcarriers of the 14th symbol adjacently, the 2-port and 3-port of the channel measurement reference signal are mapped on the 10th and 11th subcarriers of the 14th symbol adjacently, the 4-port and 5-port of the channel measurement reference signal are mapped on the 1st and 2nd subcarriers of the 14th symbol adjacently, and the 6-port and 7-port of the channel measurement reference signal are mapped on the 4th and 5th subcarriers of the 14th symbol adjacently.

    [0011] Furthermore, the newly designed channel measurement reference signals are sent repeatedly in full bandwidth with equal space by taking two RBs as the predetermined composition unit, and the channel measurement reference signal with 8 ports is located on the 14th OFDM symbol of the sending subframe, wherein the 0-port of the channel measurement reference signal is mapped on the 3rd subcarrier, the 1-port of the channel measurement reference signal is mapped on the 6th subcarrier, the 2-port of the channel measurement reference signal is mapped on the 9th subcarrier, the 3-port of the channel measurement reference signal is mapped on the 12th subcarrier, the 4-port of the channel measurement reference signal is mapped on the 15th subcarrier, the 5-port of the channel measurement reference signal is mapped on the 18th subcarrier, the 6-port of the channel measurement reference signal is mapped on the 21st subcarrier, and the 7-port of the channel measurement reference signal is mapped on the 24th subcarrier.

    [0012] Furthermore, the newly designed channel measurement reference signals are sent repeatedly in full bandwidth with equal space by taking one RB as the predetermined composition unit, and the channel measurement reference signal with 8 ports is located on the 11th OFDM symbol of the sending subframe, wherein the 0-port and 4-port of the channel measurement reference signal are mapped on the 1st subcarrier, the 1-port and 5-port of the channel measurement reference signal are mapped on the 4th subcarrier, the 2-port and 6-port of the channel measurement reference signal are mapped on the 7th subcarrier, and the 3-port and 7-port of the channel measurement reference signal are mapped on the 10th subcarrier.

    [0013] In addition, the channel measurement reference signals are sent repeatedly in full bandwidth with equal space by taking one RB as the predetermined composition unit, and the channel measurement reference signal with 8 ports is located on the 6th OFDM symbol of the sending subframe, wherein the 0-port and 1-port of the channel measurement reference signal are mapped on the 1st and 2nd subcarriers adjacently, the 2-port and 3-port of the channel measurement reference signal are mapped on the 7th and 8th subcarriers adjacently, and the frequency domain locations of the 4-port, 5-port, 6-port, and 7-port of the channel measurement reference signal are the same as those of the 0-port, 1-port, 2-port, and 3-port of the channel measurement reference signal respectively, and each port of the channel measurement reference signal is the same when being configured at different antenna ports and at the same time the mapping of the channel measurement reference signals with 1, 2, 4, and 8 port(s) are supported.

    [0014] Furthermore, the channel measurement reference signals are sent repeatedly in full bandwidth with equal space by taking one RB as the predetermined composition unit, wherein the channel measurement reference signal with 8 ports is located on the 6th and 11th OFDM symbols of the sending subframe, the 0-port of CSI-RS is mapped on the 1st subcarrier of the 6th OFDM symbol, the 1-port of CSI-RS is mapped on the 4th subcarrier of the 6th OFDM symbol, the 2-port of CSI-RS is mapped on the 7th subcarrier of the 6th OFDM symbol, the 3-port of CSI-RS is mapped on the 10th subcarrier of the 6th OFDM symbol; the 4-port of CSI-RS is mapped on the 1st subcarrier of the 11th OFDM symbol, the 5-port of CSI-RS is mapped on the 4th subcarrier of the 11th OFDM symbol, the 6-port of CSI-RS is mapped on the 7th subcarrier of the 11th OFDM symbol, and the 7 and 4-ports of CSI-RSs are mapped on the 10th subcarrier of the 11th OFDM symbol.

    [0015] Furthermore, the channel measurement reference signals are sent repeatedly in full bandwidth with equal space by taking one RB as the predetermined composition unit, wherein the channel measurement reference signal with 8 ports is located on the 6th and 11th OFDM symbols of the sending subframe, the 0-port and 1-port of CSI-RS are mapped on the 1st and 2nd subcarriers of the 6th OFDM symbol adjacently, the 2-port and 3-port of CSI-RS are mapped on the 7th and 8th subcarriers of the 6th OFDM symbol adjacently, and the 4-port, 5-port, 6-port, and 7-port are mapped on the 11th symbol, with the frequency domain locations thereof being the same as those of the 0-port, 1-port, 2-port, and 3-port respectively.

    [0016] Furthermore, the channel measurement reference signals are sent repeatedly in full bandwidth with equal space by taking one RB as the predetermined composition unit, wherein the channel measurement reference signal with 8 ports is located on the 6th and 11th OFDM symbols of the sending subframe, the 0-port and 1-port of CSI-RS are mapped on the 1st and 2nd subcarriers of the 6th OFDM symbol adjacently, the 2-port and 3-port of CSI-RS are mapped on the 7th and 8th subcarriers of the 6th OFDM symbol adjacently, and the 4-port, 5-port, 6-port, and 7-port are mapped on the 14th symbol, with the frequency domain locations thereof being the same as those of the 0-port, 1-port, 2-port, and 3-port respectively.

    [0017] A system for sending a channel measurement reference signal is further provided according to another aspect of the present invention, comprising: a sending module, configured to send each port of the channel measurement reference signal in one subframe or two adjacent subframes during one sending period and send each port of the channel measurement reference signal repeatedly in full bandwidth with equal space in the unit of a predetermined composition unit.

    [0018] In this case, the sending module can comprise: a first channel measurement reference signal port number setting unit, configured to newly design channel measurement reference signals with {1, 2, 4, 8} port(s), wherein the pattern of the channel measurement reference signal with 1 port and that of the first port of the channel measurement reference signals with 2 ports are the same, the pattern of the channel measurement reference signal with 2 ports and that of the first 2 ports of the channel measurement reference signal with 4 ports are the same, and the pattern of the channel measurement reference signal with 4 ports and that of the first 4 ports of the channel measurement reference signal with 8 ports are the same; and a second channel measurement reference signal port number setting unit, configured to newly design channel measurement reference signals with {4, 8} ports, when the number of actual antenna ports is equal to 4 or 8, the newly designed channel measurement reference signal with 4 or 8 ports achieves the downstream channel measurement of the long-term evolution advance system, and when the number of actual antenna ports is equal to 1 or 2, the common reference signal of the LTE system is reused by the channel measurement reference signal as a channel measurement reference signal, so as to achieve the downstream channel measurement of the long-term evolution advance system, wherein the pattern of the channel measurement reference signal with 4 ports and that of the first 4 ports of the channel measurement reference signal with 8 ports are the same.

    [0019] In the present invention, the patterns of the channel measurement reference signals during different sending periods are the same, and the channel measurement reference signal is sent on the 6th, 9th, and 14th symbols of the configured subframe, and the channel measurement reference signal is sent by taking a subframe of any number of 0, 2, 5, 10 or 20 as a period, and the frequency domain space of the equal space that the channel measurement reference signal predetermined composition unit is repeated with is {6, 8, 12, 16, 24, 30, 36, 42, 48}.

    [0020] In addition, the system for sending a channel measurement reference signal according to the present invention further comprises: a repeated sending unit, configured to repeatedly send the channel measurement reference signal and the newly designed channel measurement reference signals in full bandwidth with equal space by taking one or two RBs as the predetermined composition unit, and the channel measurement reference signal with 8 ports is located on the 14th OFDM symbol of the sending subframe.

    [0021] It should be understood that the present invention can also space the predetermined composition unit by two RBs, or 1.5 RBs, or 2.5 RBs, or 3 RBs to sent it in full bandwidth with equal space.

    [0022] Accordingly, by virtue of the present invention, the CRS sending of the LTE system is retained, the effect to the LTE users is very little, and the reference signal information required by high stage MIMO and COMP is provided, which is advantageous for the LTE-Advanced users to improve single link quality. In addition, since more sparse design is used, the performance degradation of LTE users is reduced, the design costs less, the performance of channel measurement can be ensured, and the LTE-A system throughput can be improved.

    Brief Description of the Accompanying Drawings



    [0023] The drawings illustrated here provide a further understanding of the present invention and form a part of the present application. The exemplary embodiments and the description thereof are used to explain the present invention without unduly limiting the scope of the present invention. In the drawings:

    Fig. 1 shows the pattern of a common reference signal and a downstream specific reference signal of a normal cyclic prefix frame structure in the LTE standard;

    Fig. 2 shows a channel measurement reference signal pattern according to the first embodiment of the present invention;

    Fig. 3 shows a channel measurement reference signal pattern according to the second embodiment of the present invention;

    Fig. 4 shows a channel measurement reference signal pattern according to the third embodiment of the present invention;

    Fig. 5 shows a channel measurement reference signal pattern according to the fourth embodiment of the present invention;

    Fig. 6 shows a channel measurement reference signal pattern according to the fifth embodiment of the present invention;

    Fig. 7 shows a channel measurement reference signal pattern according to the sixth embodiment of the present invention;

    Fig. 8 shows a channel measurement reference signal pattern according to the seventh embodiment of the present invention;

    Fig. 9 shows a channel measurement reference signal pattern according to the eighth embodiment of the present invention;

    Fig. 10 shows a channel measurement reference signal pattern according to the ninth embodiment of the present invention; and

    Fig. 11 is a block diagram of a system for sending a channel measurement reference signal according to the present invention.


    Detailed Description of the Embodiments



    [0024] The present invention now will be further described in conjunction with drawings and particular embodiments in the following.

    [0025] The present invention proposes a method for sending a channel measurement reference signal of the LTE-A system. The particular disclosure of the present invention is to send the CSI-RSs of all the antenna ports on a PDSCH corresponding resource of one subframe or two subframes.

    [0026] Since the CSI-RS needs to provide reference information about resource allocation for the LTE-A system, it is sent on the shared resources of a cell in full bandwidth for providing comprehensive schedule information on LTE and LTE-Advanced user shared resources.

    [0027] In addition, the CSI-RS can use any number of antenna ports in the {0, 4, 8} set. For example, the CSI-RS of one cell can use 0 port (i.e. not send CSI-RS), or CSI-RS with 4 ports, or CSI-RS with 8 ports or CSI-RS with four ports. The correlation between it and common reference signal and actual antenna port are as shown in the following table:
     Number of antenna ports = 1Number of antenna ports = 2Number of antenna ports = 4Number of antenna ports = 8
    Number of antenna ports of CRS = 1 1 Rel-8 CRS      
    Number of antenna ports of CRS = 2   2 Rel-8 CRS 4 Rel-8 CSIRS 8 Rel-10 CSIRS
    Number of antenna ports of CRS = 4     4 Rel-8 CSIRS 8 Rel-10 CSIRS


    [0028] In this case, when the number of CRS antenna ports is less than the number of actual antenna ports, Rel 8 may have used virtual antenna technology, while the users of Rel 10 does not use virtual antenna technology, then CRS cannot be used by CSI-RS. When the number of CRS antenna ports is equal to the number of actual antenna ports, then CRS can be used as CSI-RS.

    [0029] The same kind of CSI-RS pattern is used in one subframe, a certain kind of CSI-RS pattern defined in the standard cannot switch between different frequency domains or different timeslots. The period of the CSI-RS time domain is N subframes, N∈{0, 2, 5, 10, 20}, and they are sent with equal space according to this period during a time period. The sending period of CSI-RS of different cells can be different.

    [0030] It should be noted that when N = 0, each subframe sends CSI-RS.

    [0031] Each user receives the CSI-RS of its own cell, in order to support the channel measurement required by COMP, and COMP users can also receive the CSI-RS of other cells.

    [0032] The method for sending a channel measurement reference signal according to the present invention, in which each port of channel measurement reference signals is sent using one subframe or two adjacent subframes during one sending period and each port of channel measurement reference signal is sent repeatedly in full bandwidth with equal space in the unit of a predetermined composition unit.

    [0033] In this case, channel measurement reference signals with {1, 2, 4, 8} port(s) are newly designed, in which the pattern of the channel measurement reference signal with 1 port and that of the first port of the channel measurement reference signal with 2 ports are the same, the pattern of the channel measurement reference signal with 2 ports and that of the first 2 ports of the channel measurement reference signal with 4 ports are the same, and the frequency domain space of the equal space that the channel measurement reference signal predetermined composition unit is repeated with is {6, 8, 12, 16, 24, 30, 36, 42, 48}.

    [0034] The newly designed channel measurement reference signals are sent repeatedly in full bandwidth with equal space by taking one RB as the predetermined composition unit, and the channel measurement reference signal with 8 ports is located on the 14th OFDM symbol of the sending subframe, wherein the 0-port and 1-port of the channel measurement reference signal are mapped on the 1st and 2nd subcarriers adjacently, the 2-port and 3-port of the channel measurement reference signal are mapped on the 4th and 5th subcarriers adjacently, the 4-port and 5-port of the channel measurement reference signal are mapped on the 7th and 8th subcarriers adjacently, and the 6-port and 7-port of the channel measurement reference signal are mapped on the 10th and 11th subcarriers adjacently.

    [0035] Furthermore, the newly designed channel measurement reference signals are sent repeatedly in full bandwidth with equal space by taking two RBs as the predetermined composition unit, and the channel measurement reference signal with 8 ports is located on the 14th OFDM symbol of the sending subframe, wherein the 0-port of the channel measurement reference signal is mapped on the 1st, 9th, and 17th subcarriers, the 1-port of the channel measurement reference signal is mapped on the 2nd, 10th, and 18th subcarriers, the 2-port of the channel measurement reference signal is mapped on the 3rd, 11th, and 19th subcarriers, the 3-port of the channel measurement reference signal is mapped on the 4th, 12th, and 20th subcarriers, the 4-port of the channel measurement reference signal is mapped on the 5th, 13th, and 21st subcarriers, the 5-port of the channel measurement reference signal is mapped on the 6th, 14th, and 22nd subcarriers, the 6-port of the channel measurement reference signal is mapped on the 7th, 15th, and 23rd subcarriers, and the 7-port of the channel measurement reference signal is mapped on the 8th, 16th, and 24th subcarriers.

    [0036] Furthermore, the newly designed channel measurement reference signals are sent repeatedly in full bandwidth with equal space by taking one RB as the predetermined composition unit, and the channel measurement reference signal with 8 ports is located on the 11th and 14th OFDM symbols of the sending subframe, wherein on the 11th symbol, the 0-port and 1-port of the channel measurement reference signal are mapped on the 1st and 2nd subcarriers adjacently, the 2-port and 3-port of the channel measurement reference signal are mapped on the 4th and 5th subcarriers adjacently, the 4-port and 5-port of the channel measurement reference signal are mapped on the 7th and 8th subcarriers adjacently, and the 6-port and 7-port of the channel measurement reference signal are mapped on the 10th and 11th subcarriers adjacently; and on the 14th OFDN symbol, the 0-port and 1-port of the channel measurement reference signal are mapped on the 7th and 8th subcarriers of the 14th symbol adjacently, the 2-port and 3-port of the channel measurement reference signal are mapped on the 10th and 11th subcarriers of the 14th symbol adjacently, the 4-port and 5-port of the channel measurement reference signal are mapped on the 1st and 2nd subcarriers of the 14th symbol adjacently, and the 6-port and 7-port of the channel measurement reference signal are mapped on the 4th and 5th subcarriers of the 14th symbol adjacently.

    [0037] Furthermore, the newly designed channel measurement reference signals are sent repeatedly in full bandwidth with equal space by taking two RBs as the predetermined composition unit, and the channel measurement reference signal with 8 ports is located on the 14th OFDM symbol of the sending subframe, wherein the 0-port of the channel measurement reference signal is mapped on the 3rd subcarrier, the 1-port of the channel measurement reference signal is mapped on the 6th subcarrier, the 2-port of the channel measurement reference signal is mapped on the 9th subcarrier, the 3-port of the channel measurement reference signal is mapped on the 12th subcarrier, the 4-port of the channel measurement reference signal is mapped on the 15th subcarrier, the 5-port of the channel measurement reference signal is mapped on the 18th subcarrier, the 6-port of the channel measurement reference signal is mapped on the 21st subcarrier, and the 7-port of the channel measurement reference signal is mapped on the 24th subcarrier.

    [0038] Furthermore, the newly designed channel measurement reference signals are sent repeatedly in full bandwidth with equal space by taking one RB as the predetermined composition unit, and the channel measurement reference signal with 8 ports is located on the 11th OFDM symbol of the sending subframe, wherein the 0-port and 4-port of the channel measurement reference signal are mapped on the 1st subcarrier, the 1-port and 5-port of the channel measurement reference signal are mapped on the 4th subcarrier, the 2-port and 6-port of the channel measurement reference signal are mapped on the 7th subcarrier, and the 3-port and 7-port of the channel measurement reference signal are mapped on the 10th subcarrier.

    [0039] In addition, the channel measurement reference signals are sent repeatedly in full bandwidth with equal space by taking one RB as the predetermined composition unit, and the channel measurement reference signal with 8 ports is located on the 6th OFDM symbol of the sending subframe, wherein the 0-port and 1-port of the channel measurement reference signal are mapped on the 1st and 2nd subcarriers adjacently, the 2-port and 3-port of the channel measurement reference signal are mapped on the 7th and 8th subcarriers adjacently, and the frequency domain locations of the 4-port, 5-port, 6-port, and 7-port of the channel measurement reference signal are the same as those of the 0-port, 1-port, 2-port, and 3-port of the channel measurement reference signal respectively, and each port of the channel measurement reference signal is the same when being configured at different antenna ports and at the same time the mapping of the channel measurement reference signals with 1, 2, 4, and 8 port(s) are supported.

    [0040] Furthermore, the channel measurement reference signals are sent repeatedly in full bandwidth with equal space by taking one RB as the predetermined composition unit, wherein the channel measurement reference signal with 8 ports is located on the 6th and 11th OFDM symbols of the sending subframe, the 0-port of CSI-RS is mapped on the 1st subcarrier of the 6th OFDM symbol, the 1-port of CSI-RS is mapped on the 4th subcarrier of the 6th OFDM symbol, the 2-port of CSI-RS is mapped on the 7th subcarrier of the 6th OFDM symbol, the 3-port of CSI-RS is mapped on the 10th subcarrier of the 6th OFDM symbol; the 4-port of CSI-RS is mapped on the 1st subcarrier of the 11th OFDM symbol, the 5-port of CSI-RS is mapped on the 4th subcarrier of the 11th OFDM symbol, the 6-port of CSI-RS is mapped on the 7th subcarrier of the 11th OFDM symbol, and the 7- and 4- ports of CSI-RSs are mapped on the 10th subcarrier of the 11th OFDM symbol.

    [0041] Furthermore, the channel measurement reference signals are sent repeatedly in full bandwidth with equal space by taking one RB as the predetermined composition unit, wherein the channel measurement reference signal with 8 ports is located on the 6th and 11th OFDM symbols of the sending subframe, the 0-port and 1-port of CSI-RS are mapped on the 1st and 2nd subcarriers of the 6th OFDM symbol adjacently, the 2-port and 3-port of CSI-RS are mapped on the 7th and 8th subcarriers of the 6th OFDM symbol adjacently, and the 4-port, 5-port, 6-port, and 7-port are mapped on the 11th symbol, with the frequency domain locations thereof being the same as those of the 0-port, 1-port, 2-port, and 3-port respectively.

    [0042] Furthermore, the channel measurement reference signals are sent repeatedly in full bandwidth with equal space by taking one RB as the predetermined composition unit, wherein the channel measurement reference signal with 8 ports is located on the 6th and 11th OFDM symbols of the sending subframe, the 0-port and 1-port of CSI-RS are mapped on the 1st and 2nd subcarriers of the 6th OFDM symbol adjacently, the 2-port and 3-port of CSI-RS are mapped on the 7th and 8th subcarriers of the 6th OFDM symbol adjacently, and the 4-port, 5-port, 6-port, and 7-port are mapped on the 14th symbol, with the frequency domain locations thereof being the same as those of the 0-port, 1-port, 2-port, and 3-port respectively.

    [0043] Fig. 1 shows the pattern of a common reference signal and a downstream specific reference signal of a normal cyclic prefix frame structure according to the LTE standard, and when mapping the channel measurement reference signal, these locations should be avoid, and Figs. 2 to 10 are channel measurement reference signal patterns according to the embodiments of the present invention. The technical solution of the present invention now will be described in the manner of particular embodiments in conjunction with drawings hereinafter.

    Embodiment I



    [0044] When the number of actual antenna ports is equal to 4 or 8, the newly designed channel measurement reference signal with 4 or 8 ports achieves the downstream channel measurement of the LTE-A system; and when the number of actual antenna ports is equal to 1 or 2, the channel measurement reference signal reuses the common reference signal of the LTE-A system as a channel measurement reference signal to achieve the downstream channel measurement of the LTE-A system. The pattern of the CSI-RS with 4 ports and that of the first 4 ports of the CSI-RS with 8 ports are the same.

    [0045] The newly designed CSI-RS sends the pattern shown in Fig. 2 repeatedly with a certain period, and the newly designed CSI-RS within each period takes up one subframe to send.

    [0046] The reference signal frequency domain space of each port of antenna ports of the newly designed CSI-RS is 12 subcarriers, and each RB of the full bandwidth of the CSI-RS sending subframe repeats the pattern shown in Fig. 2.

    [0047] The newly designed CSI-RS is mapped on the 14th symbol of each subframe to send.

    [0048] The 0-port and 1-port of CSI-RS are mapped on the 1st and 2nd subcarriers adjacently, the 2-port and 3-port of CSI-RS are mapped on the 4th and 5th subcarriers adjacently, the 4-port and 5-port of CSI-RS are mapped on the 7th and 8th subcarriers adjacently, and the 6-port and 7-port of CSI-RS are mapped on the 10th and 11th subcarriers adjacently.

    Embodiment II



    [0049] When the number of actual antenna ports is equal to 4 or 8, the newly designed channel measurement reference signal with 4 or 8 ports achieves downstream channel measurement of the LTE-A system; and when the number of actual antenna ports is equal to 1 or 2, the channel measurement reference signal reuses the common reference signal of the LTE-A system as a channel measurement reference signal to achieve the downstream channel measurement of the LTE-A system. The pattern of the CSI-RS with 4 ports and that of the first 4 ports of the CSI-RS with 8 ports are the same.

    [0050] The newly designed CSI-RS with 4 or 8 ports sends the pattern shown in Fig. 3 repeatedly with a certain period, and the newly designed CSI-RS within each period takes up one subframe to send.

    [0051] The reference signal frequency domain space of each port of antenna ports of the newly designed CSI-RS is 8 subcarriers, and each two RBs of the full bandwidth of the CSI-RS sending subframe repeats the pattern shown in Fig. 3.

    [0052] The newly designed CSI-RS is mapped on the 14th symbol of each subframe to send.

    [0053] The 0 port of CSI-RS is mapped on the 1st, 9th, and 17th subcarriers, the 1-port of CSI-RS is mapped on the 2nd, 10th, and 18th subcarriers, the 2-port of CSI-RS is mapped on the 3rd, 11th, and 19th subcarriers, the 3-port of CSI-RS is mapped on the 4th, 12th, and 20th subcarriers, the 4-port of CSI-RS is mapped on the 5th, 13th, and 21st subcarriers, the 5-port of CSI-RS is mapped on the 6th, 14th, and 22nd subcarriers, the 6-port of CSI-RS is mapped on the 7th, 15th, and 23rd subcarriers, and the 7-port of CSI-RS is mapped on the 8th, 16th, and 24th subcarriers.

    Embodiment III



    [0054] When the number of actual antenna ports is equal to 4 or 8, the newly designed channel measurement reference signal with 4 or 8 ports achieves the downstream channel measurement of the LTE-A system; and when the number of actual antenna ports is equal to 1 or 2, the channel measurement reference signal reuses the common reference signal of the LTE-A system as a channel measurement reference signal to achieve the downstream channel measurement of the LTE-A system. The pattern of the CSI-RS with 4 ports and that of the first 4 ports of the CSI-RS with 8 ports are the same.

    [0055] The newly designed CSI-RS with 4 or 8 ports sends the pattern shown in Fig. 4 repeatedly with a certain period, and the newly designed CSI-RS within each period takes up one subframe to send.

    [0056] The reference signal frequency domain space of each port of antenna ports of the newly designed CSI-RS is 6 subcarriers, and each RB of the full bandwidth of the CSI-RS sending subframe repeats the pattern shown in Fig. 4.

    [0057] The newly designed CSI-RS is mapped on the 11th and 14th symbols of each subframe to send.

    [0058] The 0-port and 1-port of CSI-RS are mapped on the 1st and 2nd subcarriers of the 11th symbol adjacently, the 2-port and 3-port of CSI-RS are mapped on the 4th and 5th subcarriers of the 11th symbol adjacently, the 4-port and 5-port of CSI-RS are mapped on the 7th and 8th subcarriers of the 11th symbol adjacently, the 6-port and 7-port of CSI-RS are mapped on the 10th and 11th subcarriers of the 11th symbol adjacently; or the 0-port and 1-port of CSI-RS are mapped on the 7th and 8th subcarriers of the 14th symbol adjacently, the 2-port and 3-port of CSI-RS are mapped on the 10th and 11th subcarriers of the 14th symbol adjacently, the 4-port and 5-port of CSI-RS are mapped on the 1st and 2nd subcarriers of the 14th symbol adjacently, and the 6-port and 7-port of CSI-RS are mapped on the 4th and 5th subcarriers of the 14th symbol adjacently.

    Embodiment IV



    [0059] When the number of actual antenna ports is equal to 4 or 8, the newly designed channel measurement reference signal with 4 or 8 ports achieves the downstream channel measurement of the LTE-A system; and when the number of actual antenna ports is equal to 1 or 2, the channel measurement reference signal reuses the common reference signal of the LTE-A system as a channel measurement reference signal to achieve the downstream channel measurement of the LTE-A system. The pattern of the CSI-RS with 4 ports and that of the first 4 ports of the CSI-RS with 8 ports are the same.

    [0060] The newly designed CSI-RS with 4 or 8 ports sends the pattern shown in Fig. 5 repeatedly with a certain period, and the newly designed CSI-RS within each period takes up one subframe to send.

    [0061] The reference signal frequency domain space of each port of antenna ports of the newly designed CSI-RS is 24 subcarriers, and each two RBs of the full bandwidth of the CSI-RS sending subframe repeats the pattern shown in Fig. 5.

    [0062] The newly designed CSI-RS is mapped on the 14th symbol of each subframe to send.

    [0063] The 0 port of CSI-RS is mapped on the 3rd subcarrier, the 1-port of CSI-RS is mapped on the 6th subcarrier, the 2-port of CSI-RS is mapped on the 9th subcarrier, the 3-port of CSI-RS is mapped on the 12th subcarrier, the 4-port of CSI-RS is mapped on the 15th subcarrier, the 5-port of CSI-RS is mapped on the 18th subcarrier, the 6-port of CSI-RS is mapped on the 21th subcarrier, and the 7-port of CSI-RS is mapped on the 24th subcarrier.

    Embodiment V



    [0064] When the number of actual antenna ports is equal to 4 or 8, the newly designed channel measurement reference signal with 4 or 8 ports achieves the downstream channel measurement of the LTE-A system; and when the number of actual antenna ports is equal to 1 or 2, the channel measurement reference signal reuses the common reference signal of the LTE-A system as a channel measurement reference signal to achieve the downstream channel measurement of the LTE-A system. The pattern of CSI-RS with 4 ports and that of the first 4 ports of the CSI-RS with 8 ports are the same.

    [0065] The newly designed CSI-RS with 4 or 8 ports sends the pattern shown in Fig. 6 repeatedly with a certain period, and the newly designed CSI-RS within each period takes up one subframe to send.

    [0066] The reference signal frequency domain space of each port of antenna ports of the newly designed CSI-RS is 12 subcarriers, and each RB of the full bandwidth of the CSI-RS sending subframe repeats the pattern shown in Fig. 6.

    [0067] The newly designed CSI-RS is mapped on the 11th symbol of each subframe to send.

    [0068] The 0-port and 1-port of CSI-RS are mapped on the 1st and 2nd subcarriers adjacently, the 2-port and 3-port of CSI-RS are mapped on the 4th and 5th subcarriers adjacently, the 4-port and 5-port of CSI-RS are mapped on the 7th and 8th subcarriers adjacently, the and 6-port and 7-port of CSI-RS are mapped on the 10th and 11th subcarriers adjacently.

    Embodiment VI



    [0069] CSI-RSs with {1, 2, 4, 8} port(s) are newly designed, the patterns of the CSI-RS with 4 ports and that of the first 4 ports of the CSI-RS with 8 ports are the same. The pattern of the CSI-RS with 1 port and that of the first port of the CSI-RS with 2 ports are the same, the pattern of the CSI-RS with 2 ports and that of the first 2 ports of the CSI-RS with 4 ports are the same, and the pattern of the CSI-RS with 4 ports and that of the first 4 ports of the CSI-RS 8 ports are the same.

    [0070] The CSI-RS sends the pattern shown in Fig. 7 repeatedly with a certain period, and the newly designed CSI-RS within each period takes up one subframe to send.

    [0071] The reference signal frequency domain space of each port of antenna ports of the newly designed CSI-RS is 12 subcarriers, and each RB of the full bandwidth of the CSI-RS sending subframe repeats the pattern shown in Fig. 7.

    [0072] The newly designed CSI-RS is mapped on the 6th symbol of each subframe to send.

    [0073] The 0-port and 1-port of CSI-RS are mapped on the 1st and 2nd subcarriers adjacently, the 2-port and 3-port of CSI-RS are mapped on the 4th and 5th subcarriers adjacently, the 4-port and 5-port of CSI-RS are mapped on the 7th and 8th subcarriers adjacently, and the 6-port and 7-port of CSI-RS are mapped on the 10th and 11th subcarriers adjacently.

    Embodiment VII



    [0074] When the number of actual antenna ports is equal to 4 or 8, the newly designed channel measurement reference signal with 4 or 8 ports achieves the downstream channel measurement of the LTE-A system; and when the number of actual antenna ports is equal to 1 or 2, the channel measurement reference signal reuses the common reference signal of the LTE-A system as a channel measurement reference signal to achieve the downstream channel measurement of the LTE-A system. The pattern of the CSI-RS with 4 ports and that of the first 4 ports of the CSI-RS with 8 ports are the same.

    [0075] The newly designed CSI-RS with 4 or 8 ports sends the pattern shown in Fig. 8 repeatedly with a certain period, and the newly designed CSI-RS within each period takes up one subframe to send.

    [0076] The reference signal frequency domain space of each port of antenna ports of the newly designed CSI-RS is 12 subcarriers, and each RB of the full bandwidth of the CSI-RS sending subframe repeats the pattern shown in Fig. 6.

    [0077] The 0-port to 3-port of the newly designed CSI-RS are mapped on the 6th symbol of each subframe to send; and the 4-port to 7-port are mapped on the 11th symbol of each subframe to send.

    [0078] The 0-port and 4-port of CSI-RS are mapped on the 1st subcarrier, the 1-port and 5-port of CSI-RS are mapped on the 4th subcarrier, the 2-port and 6-port of CSI-RS are mapped on the 7th subcarrier, and the 3-port, 7-port and 4-port of CSI-RS are mapped on the 10th subcarrier.

    Embodiment VIII



    [0079] When the number of actual antenna ports is equal to 4 or 8, the newly designed channel measurement reference signal with 4 or 8 ports achieves the downstream channel measurement of the LTE-A system; and when the number of actual antenna ports is equal to 1 or 2, the channel measurement reference signal reuses the common reference signal of the LTE-A system as a channel measurement reference signal to achieve the downstream channel measurement of the LTE-A system. The pattern of the CSI-RS with 4 ports and that of the first 4 ports of the CSI-RS with 8 port are the same.

    [0080] The newly designed CSI-RS with 4 or 8 port sends the pattern shown in Fig. 9 repeatedly with a certain period, and the newly designed CSI-RS within each period takes up one subframe to send.

    [0081] The reference signal frequency domain space of each port of antenna ports of the newly designed CSI-RS is 12 subcarriers, and each RB of the full bandwidth of the CSI-RS sending subframe repeats the pattern shown in Fig. 6.

    [0082] The 0-port to 3-port of the newly designed CSI-RS are mapped on the 6th symbol of each subframe to send; and the 4-port to 7-port are mapped on the 11th symbol of each subframe to send.

    [0083] The 0-port and 1-port of CSI-RS are sent on the 1st and 2nd subcarriers adjacently, the 2-port and 3-port of CSI-RS are mapped on the 7th and 8th subcarriers adjacently, and the frequency domain locations of the 4-port, 5-port, 6-port, and 7-port are the same as those of the 0-port, 1-port, 2-port, and 3-port respectively.

    Embodiment IX



    [0084] When the number of actual antenna ports is equal to 4 or 8, the newly designed channel measurement reference signal with 4 or 8 ports achieves downstream channel measurement of the LTE-A system; and when the number of actual antenna ports is equal to 1 or 2, the channel measurement reference signal reuses the common reference signal of the LTE-A system as a channel measurement reference signal to achieve the downstream channel measurement of the LTE-A system. The pattern of the CSI-RS 4 ports and that of the first 4 ports of the CSI-RS with 8 ports are the same.

    [0085] The newly designed CSI-RS with 4 or 8 ports sends the pattern shown in Fig. 10 repeatedly with a certain period, and the newly designed CSI-RS within each period takes up one subframe to send.

    [0086] The reference signal frequency domain space of each port of antenna ports of the newly designed CSI-RS is 12 subcarriers, and each RB of the full bandwidth of the CSI-RS sending subframe repeats the pattern shown in Fig. 6.

    [0087] The 0-port to 3-port of the newly designed CSI-RS are mapped on the 6th symbol of each subframe to send; and the 4-port to 7-port are mapped on the 14th symbol of each subframe to send.

    [0088] The 0-port and 1-port of CSI-RS are sent on the 1st and 2nd subcarriers adjacently, the 2-port and 3-port of CSI-RSs are mapped on the 7th and 8th subcarriers adjacently, and the frequency domain locations of the 4-port, 5-port, 6-port, and 7-port are the same as those of the 0-port, 1-port, 2-port, and 3-port respectively.

    [0089] Fig. 11 is a block diagram of a system 1100 for sending a channel measurement reference signal according to the present invention. As shown in Fig. 11, this system comprises: a sending module 1102, configured to send each port of the channel measurement reference signal in one subframe or two adjacent subframes during one sending period and send each port of the channel measurement reference signal repeatedly in full bandwidth with equal space in the unit of a predetermined composition unit.

    [0090] In this case, the sending module 1102 can comprise: a first channel measurement reference signal port number setting unit 1102a, configured to newly design channel measurement reference signals with{1, 2, 4, 8} port(s), wherein the pattern of the channel measurement reference signal with 1 port and that of the first port of the channel measurement reference signal with 2 ports are the same, the pattern of the channel measurement reference signal with 2 ports and that of the first ports of the channel measurement reference signal with 4 ports are the same, and the pattern of the channel measurement reference signal with 4 ports and that of the first 4 ports of the channel measurement reference signal with 8 ports are the same; and a second channel measurement reference signal port number setting unit 1102b, configured to newly design channel measurement reference signals with {4, 8} ports, when the number of actual antenna ports is equal to 4 or 8, the newly designed channel measurement reference signal with 4 or 8 port achieves the downstream channel measurement of the long-term evolution advance system, and when the number of actual antenna ports is equal to 1 or 2, the common reference signal of the LTE system is reused as a channel measurement reference signals by the channel measurement reference signal, so as to achieve the downstream channel measurement of the long-term evolution advance system, wherein the pattern of the channel measurement reference signal with 4 ports and that of the first 4 ports of the channel measurement reference signal with 8 ports are the same.

    [0091] In the present invention, the patterns of the channel measurement reference signals during different sending periods are the same, and the channel measurement reference signal is sent on the 6th, 9th, and 14th symbols of the configured subframe, and the channel measurement reference signal is sent by taking a subframe of any number of 0, 2, 5, 10 or 20 as a period, and the frequency domain space of the equal space that the channel measurement reference signal predetermined composition unit is repeated with is {6, 8, 12, 16, 24, 30, 36, 42, 48}.

    [0092] In addition, the system for sending a channel measurement reference signal according to the present invention can further comprise: a repeated sending unit 1104, configured to repeatedly send the channel measurement reference signal and the newly designed channel measurement reference signals in full bandwidth with equal space by taking one or two RBs as the predetermined composition unit, and the channel measurement reference signal with 8 ports is located on the 14th OFDM symbol of the sending subframe.

    [0093] Although the above present invention sends the predetermined composition unit by each RB, it should be understood that the present invention can further be applied in sending the predetermined composition unit in full bandwidth with equal space by spacing 2 RBs, or 1.5 RBs, or 2.5 RBs, or 3 RBs.

    [0094] Those skilled in the art should understand that the above sending method of the present invention can be implemented through general-purpose computing devices and they can be put together on single computing device or distributed on a network consisted of a plurality of computing devices, optionally, they can be implemented using computing device executable program code, therefore, they can be executed by computing devices by storing them in a storage device, or they can be made into each integrated circuit module respectively or they can be implemented by making a plurality of modules or steps of them into single integrated module respectively. In this way, the present invention is not restricted to any particular hardware and software combination.

    [0095] In summary, by virtue of the present invention, the CRS sending of the LTE system is retained, the effect to the LTE users is very little, and the reference signal information required by high stage MIMO and COMP is provided, which is advantageous for the LTE-Advanced users to improve single link quality. In addition, since more sparse design is used, the performance degradation of LTE users is reduced, the design costs less, the performance of channel measurement can be ensured, and the LTE-A system throughput can be improved.

    [0096] Above description is only to illustrate the preferred embodiments but not to limit the present invention. Various alterations and changes to the present invention are apparent to those skilled in the art. The scope defined in claims shall comprise any modification, equivalent substitution and improvement within the principle of the present invention.


    Claims

    1. A method for sending a channel measurement reference signals, comprising the following steps:

    during one sending period, sending, by a base station, the channel measurement reference signal of each port in one subframe or two adjacent subframes and sending the channel measurement reference signal of each port repeatedly in full bandwidth with equal space in the unit of a predetermined composition unit,

    wherein each predetermined composition unit comprises at least one resource block (RB); the channel measurement reference signal is sent by taking N subframes as a period of the channel measurement reference signal time domain, characterised by, designing channel measurement reference signals with {1, 2, 4, 8} ports,

    wherein the pattern of the channel measurement reference signal with 1 port and that of the first port of the channel measurement reference signal with 2 ports are the same, the pattern of the channel measurement reference signal with 2 ports and that of the first 2 ports of the channel measurement reference signal with 4 ports are the same, and the pattern of the channel measurement reference signal with 4 ports and that of the first 4 ports of the channel measurement reference signal with 8 ports are the same;

    wherein the frequency domain space of the equal space that the channel measurement reference signal predetermined composition unit is repeated with is M.


     
    2. The method for sending a channel measurement reference signal according to claim 1, characterized in that newly designing channel measurement reference signals with {4, 8} ports, when the number of actual antenna ports is equal to 4 or 8, the newly designed channel measurement reference signal with 4 or 8 ports achieves a downstream channel measurement of the long-term evolution advance system; and when the number of actual antenna ports is equal to 1 or 2, the common reference signal of the LTE system is reused by the channel measurement reference signal as a channel measurement reference signal, so as to achieve the downstream channel measurement of the long-term evolution advance system; wherein the pattern of the channel measurement reference signal with 4 ports and that of the first 4 ports of the channel measurement reference signal with 8 ports are the same.
     
    3. The method for sending a channel measurement reference signal according to claim 1, characterized in that the patterns of channel measurement reference signals during different sending periods are the same.
     
    4. The method for sending a channel measurement reference signal according to claim 1, characterized in that the channel measurement reference signal is sent on the 6th, 9th, and 14th symbols of the configured subframe.
     
    5. The method for sending a channel measurement reference signal according to claim 1, characterized in that the N is any number of 0, 2, 5, 10 or 20.
     
    6. The method for sending a channel measurement reference signal according to claim 1, characterized in that M is one of the following: {6, 8, 12, 16, 24, 30, 36, 42, 48}.
     
    7. The method for sending a channel measurement reference signal according to claim 2, characterized in that the newly designed channel measurement reference signals are sent repeatedly in full bandwidth with equal space by taking one RB as a predetermined composition unit, and the channel measurement reference signal with 8 ports is located on the 14th OFDM symbol of the sending subframe, wherein the 0 port of the channel measurement reference signal and the 1-port of the channel measurement reference signal are mapped on the 1st and 2nd subcarriers adjacently, the 2-port of the channel measurement reference signal and the 3-port of the channel measurement reference signal are mapped on the 4th and 5th subcarriers adjacently, the 4-port of the channel measurement reference signal and the 5-port of the channel measurement reference signal are mapped on the 7th and 8th subcarriers adjacently, and the 6-port of the channel measurement reference signal and the 7-port of the channel measurement reference signal are mapped on the 10th and 11th subcarriers adjacently.
     
    8. The method for sending a channel measurement reference signal according to claim 2, characterized in that the newly designed channel measurement reference signals are sent repeatedly in full bandwidth with equal space by taking two RBs as the predetermined composition unit, and the channel measurement reference signal with 8 ports is located on the 14th OFDM symbol of the sending subframe, wherein
    the 0-port of the channel measurement reference signal is mapped on the 1 st, 9th, and 17th subcarriers, the 1-port of the channel measurement reference signal is mapped on the 2nd, 10th, and 18th subcarriers, the 2-port of the channel measurement reference signal is mapped on the 3rd, 11th, and 19th subcarriers, the 3-port of the channel measurement reference signal is mapped on the 4th, 12th, and 20th subcarriers, the 4-port of the channel measurement reference signal is mapped on the 5th, 13th, and 21st subcarriers, the 5-port of the channel measurement reference signal is mapped on the 6th, 14th, and 22nd subcarriers, the 6-port of the channel measurement reference signal is mapped on the 7th, 15th, and 23rd subcarriers, and the 7-port of the channel measurement reference signal is mapped on the 8th, 16th, and 24th subcarriers.
     
    9. The method for sending a channel measurement reference signal according to claim 2, characterized in that the newly designed channel measurement reference signals are sent repeatedly in full bandwidth with equal space by taking one RB as the predetermined composition unit, and the channel measurement reference signal with 8 ports is located on the 11th and 14th OFDM symbols of the sending subframe, wherein
    on the 11th symbol, the 0-port and 1-port of the channel measurement reference signal are mapped on the 1st and 2nd subcarriers adjacently, the 2-port and 3-port of the channel measurement reference signal are mapped on the 4th and 5th subcarriers adjacently, the 4-port and 5-port of the channel measurement reference signal are mapped on the 7th and 8th subcarriers adjacently, and the 6-port and 7-port of the channel measurement reference signal are mapped on the 10th and 11th subcarriers adjacently; and on the 14th OFDN symbol, the 0-port and 1-port of the channel measurement reference signal are mapped on the 7th and 8th subcarriers of the 14th symbol adjacently, the 2-port and 3-port of the channel measurement reference signal are mapped on the 10th and 11th subcarriers of the 14th symbol adjacently, the 4-port and 5-port of the channel measurement reference signal are mapped on the 1st and 2nd subcarriers of the 14th symbol adjacently, and the 6-port and 7-portsof the channel measurement reference signal are mapped on the 4th and 5th subcarriers of the 14th symbol adjacently.
     
    10. The method for sending a channel measurement reference signals according to claim 2, characterized in that the newly designed channel measurement reference signals are sent repeatedly in full bandwidth with equal space by taking two RBs as the predetermined composition unit, and the channel measurement reference signal with 8 ports is located on the 14th OFDM symbol of the sending subframe, wherein
    the 0-port of the channel measurement reference signal is mapped on the 3rd subcarrier, the 1-port of the channel measurement reference signal is mapped on the 6th subcarrier, the 2-port of the channel measurement reference signal is mapped on the 9th subcarrier, the 3-port of the channel measurement reference signal is mapped on the 12th subcarrier, the 4-port of the channel measurement reference signal is mapped on the 15th subcarrier, the 5-port of the channel measurement reference signal is mapped on the 18th subcarrier, the 6-port of the channel measurement reference signal is mapped on the 21st subcarrier, and the 7-port of the channel measurement reference signal is mapped on the 24th subcarrier.
     
    11. The method for sending a channel measurement reference signal according to claim 2, characterized in that the newly designed channel measurement reference signals are sent repeatedly in full bandwidth with equal space by taking one RB as the predetermined composition unit, and the channel measurement with 8 ports reference signal is located on the 6th and 11th OFDM symbols of the sending subframe, wherein
    the 0-port and 4-port of the channel measurement reference signal are mapped on the 1st subcarrier, the 1-port and 5-port of the channel measurement reference signal are mapped on the 4th subcarrier, the 2-port and 6-port of the channel measurement reference signal are mapped on the 7th subcarrier, and the 3-port and 7-port of the channel measurement reference signal are mapped on the10th subcarrier.
     
    12. The method for sending a channel measurement reference signal according to claim 2, characterized in that the channel measurement reference signal is sent repeatedly in full bandwidth with equal space by taking one RB as the predetermined composition unit, and the channel measurement reference signal with 8 ports is located on the 6th OFDM symbol of the sending subframe, wherein
    the 0-port and 1-port of the channel measurement reference signals are mapped on the 1st and 2nd subcarriers adjacently, the 2-port and 3-port of the channel measurement reference signal are mapped on the 7th and 8th subcarriers adjacently, the frequency domain locations of the 4-port, 5-port, 6-port, and 7-port of the channel measurement reference signal are the same as those of the 0-port, 1-port, 2-port, and 3-port of the channel measurement reference signal respectively, and each port of the channel measurement reference signal is the same when being configured at different antenna ports and the mapping of channel measurement reference signals with 1,2,4, and 8 port(s) are supported at the same time.
     
    13. The method for sending a channel measurement reference signal according to claim 2, characterized in that the channel measurement reference signal is sent repeatedly in full bandwidth with equal space by taking one RB as the predetermined composition unit, wherein
    the channel measurement reference signal with 8 ports is located on the 6th and 11th OFDM symbols of the sending subframe, the 0-port of CSI-RS is mapped on the 1st subcarrier of the 6th OFDM symbol, the 1-port of CSI-RS is mapped on the 4th subcarrier of the 6th OFDM symbol, the 2-port of CSI-RS is mapped on the 7th subcarrier of the 6th OFDM symbol, the 3-port of CSI-RS is mapped on the 10th subcarrier of the 6th OFDM symbol; the 4-port of CSI-RS is mapped on the 1st subcarrier of the 11th OFDM symbol, the 5-port of CSI-RS is mapped on the 4th subcarrier of the 11th OFDM symbol, the 6-port of CSI-RS is mapped on the 7th subcarrier of the 11th OFDM symbol, and the 7-port of CSI-RS is mapped on the 10th subcarrier of the 11th OFDM symbol.
     
    14. The method for sending a channel measurement reference signal according to claim 2, characterized in that the channel measurement reference signal is sent repeatedly in full bandwidth with equal space by taking one RB as the predetermined composition unit, wherein
    the channel measurement reference signal with 8 ports is located on the 6th and 11th OFDM symbols of the sending subframe, the 0-port and 1-port of CSI-RS are mapped on the 1st and 2nd subcarriers of the 6th OFDM symbol adjacently, the 2-port and 3-port of CSI-RS are mapped on the 7th and 8th subcarriers of the 6th OFDM symbol adjacently, and the 4-port, 5-port, 6-port, and 7-port are mapped on the 11th symbol, with the frequency domain locations thereof being the same as those of the 0-port, 1-port, 2-port, and 3-port respectively.
     
    15. The method for sending a channel measurement reference signal according to claim 2, characterized in that the channel measurement reference signal is sent repeatedly in full bandwidth with equal space by taking one RB as the predetermined composition unit, wherein
    the channel measurement reference signal with 8 ports is located on the 6th and 14th OFDM symbols of the sending subframe, the 0-port and 1-port of CSI-RS are mapped on the 1st and 2nd subcarriers of the 6th OFDM symbol adjacently, the 2-port and 3-port of CSI-RS are mapped on the 7th and 8th subcarriers of the 6th OFDM symbol adjacently, and the 4-port, 5-port, 6-port, and 7-port are mapped on the 14th symbol, with the frequency domain locations thereof being the same as those of the 0-port, 1-port, 2-port, and 3-port respectively.
     
    16. A system for sending a channel measurement reference signal, comprising:

    a sending module (1102), configured to send the channel measurement reference signal of each port in one subframe or two adjacent subframes during one sending period and send the channel measurement reference signal of each port repeatedly in full bandwidth with equal space in the unit of a predetermined composition unit,
    wherein each predetermined composition unit comprises at least one resource block (RB); the channel measurement reference signal is sent by taking N subframes as a period of the channel measurement reference signal time domain characterised by, the sending module (1102) comprises:

    a first channel measurement reference signal port number setting unit (1102a), configured to design channel measurement reference signals with {1, 2, 4, 8} port(s), wherein the pattern of the channel measurement reference signal with 1 port and that of the first port of the channel measurement reference signal with 2 ports are the same, the pattern of the channel measurement reference signal with 2 ports and that of the first 2 ports of the channel measurement reference signal with 4 ports are the same, and the pattern of the channel measurement reference signal with 4 ports and that of the first 4 ports of the channel measurement reference signal with 8 port are the same; and

    a second channel measurement reference signal port number setting unit (1102b), configured to design channel measurement reference signals with {4, 8} ports, when the number of actual antenna ports is equal to 4 or 8, the newly designed channel measurement reference signal with 4 or 8 ports achieves the downstream channel measurement of the long-term evolution advance system, and when the number of actual antenna ports is equal to 1 or 2, the common reference signal of the LTE system is reused by the channel measurement reference signal as a channel measurement reference signal, so as to achieve the downstream channel measurement of the long-term evolution advance system, wherein the pattern of the channel measurement reference signal with 4 ports and that of the first 4 ports of channel measurement reference signal with 8 ports are the same.


     
    17. The system for sending a channel measurement reference signal according to claim 16, characterized in that the patterns of the channel measurement reference signals during different sending periods are the same, the channel measurement reference signal is sent on the 6th, 9th, and 14th symbols of the configured subframe, and the channel measurement reference signal is sent by taking a subframe of any number of 0, 2, 5, 10, or 20 as a period, and the frequency domain space of the equal space that the channel measurement reference signal predetermined composition unit is repeated with is {6, 8, 12, 16, 24, 30, 36, 42, 48}.
     
    18. The system for sending a channel measurement reference signal according to claim 16, characterized in that it further comprises:

    a repeated sending unit (1104), configured to repeatedly send the channel measurement reference signal and the newly designed channel measurement reference signals in full bandwidth with equal space by taking one or two RBs as the predetermined composition unit, wherein the channel measurement reference signal with 8 ports is located on the 14th OFDM symbol of the sending subframe.


     


    Ansprüche

    1. Ein Verfahren zum Senden von Kanalmessreferenzsignalen, das folgende Schritte umfasst:

    während einer Sendeperiode, durch eine Basisstation Senden des Kanalmessreferenzsignals jedes Anschlusses in einem Unterrahmen oder zwei benachbarten Unterrahmen und wiederholtes Senden des Kanalmessreferenzsignals jedes Anschlusses in voller Bandbreite mit gleichem Raum in der Einheit einer vorbestimmten zusammengesetzten Einheit,

    wobei jede vorbestimmte zusammengesetzte Einheit mindestens einen Ressourcenblock (RB) umfasst; wobei das Kanalmessreferenzsignal gesendet wird, indem N Unterrahmen als Zeitintervall der Kanalmessreferenzsignal-Zeitdomäne genommen werden, gekennzeichnet durch

    das Entwickeln von Kanalmessreferenzsignalen mit {1, 2, 4, 8} Anschlüssen,

    wobei das Muster des Kanalmessreferenzsignals mit 1 Anschluss und dasjenige des ersten Anschlusses des Kanalmessreferenzsignals mit 2 Anschlüssen identisch sind, das Muster des Kanalmessreferenzsignals mit 2 Anschlüssen und dasjenige der ersten 2 Anschlüsse des Kanalmessreferenzsignals mit 4 Anschlüssen identisch sind, und das Muster des Kanalmessreferenzsignals mit 4 Anschlüssen und dasjenige der ersten 4 Anschlüsse des Kanalmessreferenzsignals mit 8 Anschlüssen identisch sind;

    wobei der Frequenzdomänenraum des gleichen Raums, mit dem die vorbestimmte zusammengesetzte Kanalmessreferenzsignaleinheit wiederholt wird, M ist.


     
    2. Das Verfahren zum Senden eines Kanalmessreferenzsignals gemäß Anspruch 1, dadurch gekennzeichnet, dass Kanalmessreferenzsignale mit {4, 8} Anschlüssen neu entwickelt werden,
    wenn die Anzahl tatsächlicher Antennenanschlüsse gleich 4 oder 8 ist, erzielt das neu entwickelte Kanalmessreferenzsignal mit 4 oder 8 Anschlüssen eine Empfangskanalmessung des Long-Term Evolution-Advanced Systems; und
    wenn die Anzahl tatsächlicher Antennenanschlüsse gleich 1 oder 2 ist, wird das gemeinsame Referenzsignal des LTE-Systems vom Kanalmessreferenzsignal als Kanalmessreferenzsignal wieder-verwendet, um so die Empfangskanalmessung des Long-Term Evolution Advanced Systems zu erreichen;
    wobei das Muster des Kanalmessreferenzsignals mit 4 Anschlüssen und dasjenige der ersten 4 Anschlüsse des Kanalmessreferenzsignals mit 8 Anschlüssen identisch sind.
     
    3. Das Verfahren zum Senden eines Kanalmessreferenzsignals gemäß Anspruch 1, dadurch gekennzeichnet, dass die Muster von Kanalmessreferenzsignalen während verschiedener Sendezeiträume identisch sind.
     
    4. Das Verfahren zum Senden eines Kanalmessreferenzsignals gemäß Anspruch 1, dadurch gekennzeichnet, dass das Kanalmessreferenzsignal auf dem 6., dem 9. und dem 14. Zeichen des konfigurierten Unterrahmens gesendet wird.
     
    5. Das Verfahren zum Senden eines Kanalmessreferenzsignals gemäß Anspruch 1, dadurch gekennzeichnet, dass N eine beliebige Zahl aus 0, 2, 5, 10 oder 20 ist.
     
    6. Das Verfahren zum Senden eines Kanalmessreferenzsignals gemäß Anspruch 1, dadurch gekennzeichnet, dass M eines von Folgendem ist: {6, 8, 12, 16, 24, 30, 36, 42, 48}.
     
    7. Das Verfahren zum Senden eines Kanalmessreferenzsignals gemäß Anspruch 2, dadurch gekennzeichnet, dass die neu entwickelten Kanalmessreferenzsignale wiederholt in voller Bandbreite mit gleichem Raum gesendet werden, indem ein RB als vorbestimmte zusammengesetzte Einheit genommen wird, und wobei das Kanalmessreferenzsignal mit 8 Anschlüssen sich auf dem 14. OFDM-Zeichen des sendenden Unterrahmens befindet, wobei der 0 Anschluss des Kanalmessreferenzsignals und der 1-Anschluss des Kanalmessreferenzsignals nebeneinander auf den 1, und den 2. Hilfsträger abgebildet werden, der 2-Anschluss des Kanalmessreferenzsignals und der 3-Anschluss des Kanalmessreferenzsignals nebeneinander auf den 4. und den 5. Hilfsträger abgebildet werden, der 4-Anschluss des Kanalmessreferenzsignals und der 5-Anschluss des Kanalmessreferenzsignals nebeneinander auf den 7. und den 8. Hilfsträger abgebildet werden und der 6-Anschluss des Kanalmessreferenzsignals und der 7-Anschluss des Kanalmessreferenzsignals nebeneinander auf den 10. und den 11. Hilfsträger abgebildet werden.
     
    8. Das Verfahren zum Senden eines Kanalmessreferenzsignals gemäß Anspruch 2, dadurch gekennzeichnet, dass die neu entwickelten Kanalmessreferenzsignale wiederholt in voller Bandbreite mit gleichem Raum gesendet werden, indem zwei RBs als die vorbestimmte zusammengesetzte Einheit genommen werden und das Kanalmessreferenzsignal mit 8 Anschlüssen sich auf dem 14. OFDM-Zeichen des sendenden Unterrahmens befindet, wobei
    der 0-Anschluss des Kanalmessreferenzsignals auf den 1., den 9. und den 17. Hilfsträger abgebildet wird,
    der 1-Anschluss des Kanalmessreferenzsignals auf den 2., den 10. und den 18. Hilfsträger abgebildet wird,
    der 2-Anschluss des Kanalmessreferenzsignals auf dem 3., dem 11. und dem 19. Hilfsträger abgebildet wird,
    der 3-Anschluss des Kanalmessreferenzsignals auf den 4., den 12. und den 20. Hilfsträger abgebildet wird,
    der 4-Anschluss des Kanalmessreferenzsignals auf den 5., den 13. und den 21. Hilfsträger abgebildet wird,
    der 5-Anschluss des Kanalmessreferenzsignals auf den 6., den 14. und den 22. Hilfsträger abgebildet wird,
    der 6-Anschluss des Kanalmessreferenzsignals auf den 7., den 15. und den 23. Hilfsträger abgebildet wird, und
    der 7-Anschluss des Kanalmessreferenzsignals auf den 8., den 16. und den 24. Hilfsträger abgebildet wird.
     
    9. Das Verfahren zum Senden eines Kanalmessreferenzsignals gemäß Anspruch 2, dadurch gekennzeichnet, dass die neu entwickelten Kanalmessreferenzsignale wiederholt in voller Bandbreite mit gleichem Raum gesendet werden, indem ein RB als vorbestimmte zusammengesetzte Einheit genommen wird und das Kanalmessreferenzsignal mit 8 Anschlüssen sich auf dem 11. und dem 14. OFDM-Zeichen des sendenden Unterrahmens befindet, wobei
    auf dem 11. Zeichen der 0-Anschluss und der 1-Anschluss des Kanalmessreferenzsignals nebeneinander auf den 1. und den 2. Hilfsträger abgebildet werden, der 2-Anschluss und der 3-Anschluss des Kanalmessreferenzsignals nebeneinander auf den 4. und den 5. Hilfsträger abgebildet werden, der 4-Anschluss und der 5-Anschluss des Kanalmessreferenzsignals nebeneinander auf den 7. und den 8. Hilfsträger abgebildet werden und der 6-Anschluss und der 7-Anschluss des Kanalmessreferenzsignals nebeneinander auf den 10. und den 11. Hilfsträger abgebildet werden; und wobei auf dem 14. OFDN-Zeichen der 0-Anschluss und der 1-Anschluss des Kanalmessreferenzsignals nebeneinander auf den 7. und den 8. Hilfsträger des 14. Zeichens abgebildet werden, der 2-Anschluss und der 3-Anschluss des Kanalmessreferenzsignals nebeneinander auf den 10. und den 11. Hilfsträger des 14. Zeichens abgebildet werden, der 4-Anschluss und der 5-Anschluss des Kanalmessreferenzsignals nebeneinander auf den 1. und den 2. Hilfsträger des 14. Zeichens abgebildet werden, und wobei der 6-Anschluss und der 7-Anschluss des Kanalmessreferenzsignals nebeneinander auf den 4. und den 5. Hilfsträger des 14. Zeichens abgebildet werden.
     
    10. Das Verfahren zum Senden eines Kanalmessreferenzsignals gemäß Anspruch 2, dadurch gekennzeichnet, dass die neu entwickelten Kanalmessreferenzsignale wiederholt in voller Bandbreite mit gleichem Raum gesendet werden, indem zwei RBs als vorbestimmte zusammengesetzte Einheit genommen werden und das Kanalmessreferenzsignal mit 8 Anschlüssen sich auf dem 14. OFDM-Zeichen des sendenden Unterrahmens befindet, wobei
    der 0-Anschluss des Kanalmessreferenzsignals auf den 3. Hilfsträger abgebildet wird, der 1-Anschluss des Kanalmessreferenzsignals auf den 6. Hilfsträger abgebildet wird, der 2-Anschluss des Kanalmessreferenzsignals auf den 9. Hilfsträger abgebildet wird, der 3-Anschluss des Kanalmessreferenzsignals auf den 12. Hilfsträger abgebildet wird, der 4-Anschluss des Kanalmessreferenzsignals auf den 15. Hilfsträger abgebildet wird, der 5-Anschluss des Kanalmessreferenzsignals auf den 18. Hilfsträger abgebildet wird, der 6-Anschluss des Kanalmessreferenzsignals auf den 21. Hilfsträger abgebildet wird und der 7-Anschluss des Kanalmessreferenzsignals auf den 24. Hilfsträger abgebildet wird.
     
    11. Das Verfahren zum Senden eines Kanalmessreferenzsignals gemäß Anspruch 2, dadurch gekennzeichnet, dass die neu entwickelten Kanalmessreferenzsignale wiederholt in voller Bandbreite mit gleichem Raum gesendet werden, indem ein RB als vorbestimmte zusammengesetzte Einheit genommen wird, und die Kanalmessung mit 8 Anschlüssen Referenzsignal sich auf dem 6. und 11. OFDM-Zeichen des sendenden Unterrahmens befindet, wobei
    der 0-Anschluss und der 4-Anschluss des Kanalmessreferenzsignals auf den 1. Hilfsträger abgebildet werden, der 1-Anschluss und der 5-Anschluss des Kanalmessreferenzsignals auf den 4. Hilfsträger abgebildet werden, der 2-Anschluss und der 6-Anschluss des Kanalmessreferenzsignals auf den 7. Hilfsträger abgebildet werden und der 3-Anschluss und der 7-Anschluss des Kanalmessreferenzsignals auf den 10. Hilfsträger abgebildet werden.
     
    12. Das Verfahren zum Senden eines Kanalmessreferenzsignals gemäß Anspruch 2, dadurch gekennzeichnet, dass das Kanalmessreferenzsignal wiederholt in voller Bandbreite mit gleichem Raum gesendet wird, indem ein RB als vorbestimmte zusammengesetzte Einheit genommen wird, und das Kanalmessreferenzsignal mit 8 Anschlüssen sich auf dem 6. OFDM-Zeichen des sendenden Unterrahmens befindet, wobei
    der 0-Anschluss und der 1-Anschluss nebeneinander auf den 1. und den 2. Hilfsträger abgebildet werden, der 2-Anschluss und der 3-Anschluss des Kanalmessreferenzsignals nebeneinander auf den 7. und den 8. Hilfsträger abgebildet werden, die Positionen der Frequenzdomänen des 4-Anschlusses, des 5-Anschlusses, 6-Anschlusses und 7-Anschlusses des Kanalmessreferenzsignals identisch sind mit denjenigen des 0-Anschlusses, 1-Anschlusses, 2-Anschlusses beziehungsweise 3-Anschlusses des Kanalmessreferenzsignals, und jeder Anschluss des Kanalmessreferenzsignals bei einer Konfiguration an verschiedenen Antennenanschlüssen gleich ist, und die Abbildung von Kanalmessreferenzsignalen mit 1, 2, 4 und 8 Anschluss/Anschlüssen gleichzeitig unterstützt wird.
     
    13. Das Verfahren zum Senden eines Kanalmessreferenzsignals gemäß Anspruch 2, dadurch gekennzeichnet, dass das Kanalmessreferenzsignal wiederholt in voller Bandbreite mit gleichem Raum gesendet wird, indem ein RB als vorbestimmte zusammengesetzte Einheit genommen wird, wobei
    das Kanalmessreferenzsignal mit 8 Anschlüssen sich auf dem 6. und dem 11. OFDM-Zeichen des sendenden Unterrahmens befindet, der 0-Anschluss von CSI-RS auf den 1. Hilfsträger des 6. OFDM-Zeichens abgebildet wird, der 1-Anschluss von CSI-RS auf den 4. Hilfsträger des 6. OFDM-Zeichens abgebildet wird, der 2-Anschluss von CSI-RS auf den 7. Hilfsträger des 6. OFDM-Zeichens abgebildet wird, der 3-Anschluss von CSI-RS auf den 10. Hilfsträger des 6. OFDM-Zeichens abgebildet wird, der 4-Anschluss von CSI-RS auf den 1. Hilfsträger des 11. OFDM-Zeichens abgebildet wird, der 5-Anschluss von CSI-RS auf den 4. Hilfsträger des 11. OFDM-Zeichens abgebildet wird, der 6-Anschluss von CSI-RS auf den 7. Hilfsträger des 11. OFDM-Zeichens abgebildet wird und der 7-Anschluss von CSI-RS auf den 10. Hilfsträger des 11. OFDM-Zeichens abgebildet wird.
     
    14. Das Verfahren zum Senden eines Kanalmessreferenzsignals gemäß Anspruch 2, dadurch gekennzeichnet, dass das Kanalmessreferenzsignal wiederholt in voller Bandbreite mit gleichem Raum gesendet wird, indem ein RB als vorbestimmte zusammengesetzte Einheit genommen wird, wobei
    das Kanalmessreferenzsignal mit 8 Anschlüssen sich auf dem 6. und dem 11. OFDM-Zeichen des sendenden Unterrahmens befindet, der 0-Anschluss und der 1-Anschluss von CSI-RS nebeneinander auf den 1. und den 2. Hilfsträger des 6. OFDM-Zeichens abgebildet werden, der 2-Anschluss und der 3-Anschluss von CSI-RS nebeneinander auf den 7. und den 8. Hilfsträger des 6. OFDM-Zeichens abgebildet werden und der 4-Anschluss, der 5-Anschluss, 6-Anschluss und 7-Anschluss auf das 11. Zeichen abgebildet werden, wobei die Positionen der Frequenzdomänen derselben identisch sind mit denjenigen des 0-Anschlusses, 1-Anschlusses, 2-Anschlusses beziehungsweise des 3-Anschlusses.
     
    15. Das Verfahren zum Senden eines Kanalmessreferenzsignals gemäß Anspruch 2, dadurch gekennzeichnet, dass das Kanalmessreferenzsignal wiederholt in voller Bandbreite mit gleichem Raum gesendet wird, indem ein RB als vorbestimmte zusammengesetzte Einheit genommen wird, wobei
    das Kanalmessreferenzsignal mit 8 Anschlüssen sich auf dem 6. und dem 14. OFDM-Zeichen des sendenden Unterrahmens befindet, der 0-Anschluss und der 1-Anschluss von CSI-RS nebeneinander auf den 1, und den 2. Hilfsträger des 6. OFDM-Zeichens abgebildet werden, der 2-Anschluss und der 3-Anschluss von CSI-RS nebeneinander auf den 7. und den 8. Hilfsträger des 6. OFDM-Zeichens abgebildet werden und der 4-Anschluss, der 5-Anschluss, 6-Anschluss und 7-Anschluss auf das 14. Zeichen abgebildet werden, wobei die Positionen der Frequenzdomänen derselben identisch sind mit denjenigen des 0-Anschlusses, 1-Anschlusses, 2-Anschlusses beziehungsweise des 3-Anschlusses.
     
    16. Ein System zum Senden eines Kanalmessreferenzsignals, das Folgendes umfasst:

    ein Sendemodul (1102), konfiguriert, um das Kanalmessreferenzsignal jedes Anschlusses während einer Sendeperiode in einem Unterrahmen oder zwei benachbarten Unterrahmen zu senden und das Kanalmessreferenzsignal jedes Anschlusses wiederholt in voller Bandbreite mit gleichem Raum in der Einheit einer vorbestimmten zusammengesetzten Einheit zu senden,

    wobei jede vorbestimmte zusammengesetzte Einheit mindestens einen Ressourcenblock (RB) umfasst; wobei das Kanalmessreferenzsignal gesendet wird, indem N Unterrahmen als ein Zeitintervall der Kanalmessreferenzsignal-Zeitdomäne genommen werden,

    dadurch gekennzeichnet, dass das Sendemodul (1102) Folgendes umfasst:

    eine erste Kanalmessreferenzsignal-Anschlussnummereinstelleinheit (1102a), die konfiguriert ist, um Kanalmessreferenzsignale mit {1, 2, 4, 8} Anschluss/Anschlüssen zu entwickeln, wobei das Muster des Kanalmessreferenzsignals mit 1 Anschluss und dasjenige des ersten Anschlusses des Kanalmessreferenzsignals mit 2 Anschlüssen identisch sind, das Muster des Kanalmessreferenzsignals mit 2 Anschlüssen und dasjenige der ersten 2 Anschlüsse des Kanalmessreferenzsignals mit 4 Anschlüssen identisch sind und das Muster des Kanalmessreferenzsignals mit 4 Anschlüssen und dasjenige der ersten 4 Anschlüsse des Kanalmessreferenzsignals mit 8 Anschlüssen identisch sind; und

    eine zweite Kanalmessreferenzsignal-Anschlussnummereinstelleinheit (1102b), die konfiguriert ist, um Kanalmessreferenzsignale mit {4, 8} Anschlüssen zu entwickeln; wenn die Anzahl tatsächlicher Antennenanschlüsse gleich 4 oder 8 ist, erreicht das neu entwickelte Kanalmessreferenzsignal mit 4 oder 8 Anschlüssen die Empfangskanalmessung des Long-Term Evolution Advanced Systems; und wenn die Anzahl tatsächlicher Antennenanschlüsse gleich 1 oder 2 ist, wird das gemeinsame Referenzsignal des LTE--Systems vom Kanalmessreferenzsignal als Kanalmessreferenzsignal wiederverwendet, um so die Empfangskanalmessung des Long-Term Evolution Advanced Systems zu erreichen, wobei das Muster des Kanalmessreferenzsignals mit 4 Anschlüssen und dasjenige der ersten 4 Anschlüsse des Kanalmessreferenzsignals mit 8 Anschlüssen identisch sind.


     
    17. Das System zum Senden eines Kanalmessreferenzsignals gemäß Anspruch 16, dadurch gekennzeichnet, dass die Muster der Kanalmessreferenzsignale während verschiedener Sendeperioden identisch sind, wobei das Kanalmessreferenzsignal auf dem 6., dem 9. und dem 14. Zeichen des konfigurierten Unterrahmens gesendet wird und das Kanalmessreferenzsignal gesendet wird, indem ein Unterrahmen einer beliebigen Zahl aus 0, 2, 5, 10 oder 20 als einer Periode genommen wird, und wobei der Frequenzdomänenraum des gleichen Raums, mit dem die vorbestimmte zusammengesetzte Kanalmessreferenzsignal-Einheit wiederholt wird, (6, 8, 12, 16, 24, 30, 36, 42, 48) ist.
     
    18. Das System zum Senden eines Kanalmessreferenzsignals gemäß Anspruch 16, dadurch gekennzeichnet, dass es weiter Folgendes umfasst:

    eine Einheit (1104) zum wiederholten Senden, konfiguriert, um das Kanalmessreferenzsignal und die neu entwickelten Kanalmessreferenzsignale in voller Bandbreite mit gleichem Raum wiederholt zu senden, indem ein oder zwei RBs als vorbestimmte zusammengesetzte Einheit genommen werden, wobei das Kanalmessreferenzsignal mit 8 Anschlüssen sich auf dem 14. OFDM-Zeichen des sendenden Unterrahmens befindet.


     


    Revendications

    1. Procédé pour envoyer un signal de référence de mesure de canal, comprenant les étapes suivantes :

    pendant une période d'envoi, faire envoyer par une station de base le signal de référence de mesure de canal de chaque port dans une sous-trame ou deux sous-trames adjacentes et envoyer le signal de référence de mesure de canal de chaque port de façon répétée en pleine bande passante avec un espace égal dans l'unité d'une unité de composition prédéterminée,

    dans lequel chaque unité de composition prédéterminée comprend au moins un bloc de ressource (RB) ; le signal de référence de mesure de canal est envoyé en prenant N sous-trames comme période du domaine temporel du signal de référence de mesure de canal, caractérisé par l'étape suivante :

    concevoir des signaux de référence de mesure de canal avec {1, 2, 4, 8} ports,

    dans lequel le motif du signal de référence de mesure de canal ayant 1 port et celui du premier port du signal de référence de mesure de canal ayant 2 ports sont identiques, le motif du signal de référence de mesure de canal ayant 2 ports et celui des 2 premiers ports du signal de référence de mesure de canal ayant 4 ports sont identiques, et le motif du signal de référence de mesure de canal ayant 4 ports et celui des 4 premiers ports du signal de référence de mesure de canal ayant 8 ports sont identiques ;

    dans lequel l'espace de domaine fréquentiel de l'espace égal avec lequel l'unité de composition prédéterminée du signal de référence de mesure de canal est répétée est M.


     
    2. Procédé d'envoi d'un signal de référence de mesure de canal selon la revendication 1, caractérisé en ce que l'on conçoit de nouveaux signaux de référence de mesure de canal avec {4, 8} ports,

    quand le nombre de ports d'antenne réel vaut de 4 à 8, le signal de référence de mesure de canal nouvellement conçu ayant 4 ou 8 ports réalise une mesure de canal descendante du système d'évolution à long terme amélioré ; et

    quand le nombre de ports d'antenne réel est égal à 1 ou 2, le signal de référence commun du système LTE est réutilisé par le signal de référence de mesure de canal comme signal de référence de mesure de canal, afin de réaliser la mesure de canal descendante du système d'évolution à long terme amélioré ;

    dans lequel le motif du signal de référence de mesure de canal ayant 4 ports et celui des 4 premiers ports du signal de référence de mesure de canal ayant 8 ports sont identiques.


     
    3. Procédé d'envoi d'un signal de référence de mesure de canal selon la revendication 1, caractérisé en ce que les motifs de signaux de référence de mesure de canal pendant des périodes d'envoi différentes sont identiques.
     
    4. Procédé d'envoi d'un signal de référence de mesure de canal selon la revendication 1, caractérisé en ce que le signal de référence de mesure de canal est envoyé sur les 6e, 9e et 14e symboles de la sous-trame configurée.
     
    5. Procédé d'envoi d'un signal de référence de mesure de canal selon la revendication 1, caractérisé en ce que N est n'importe quel nombre parmi 0, 2, 5, 10 et 20.
     
    6. Procédé d'envoi d'un signal de référence de mesure de canal selon la revendication 1, caractérisé en ce que M est l'un des nombres suivants : {6, 8, 12, 16, 24, 30, 36, 42, 48}.
     
    7. Procédé d'envoi d'un signal de référence de mesure de canal selon la revendication 2, caractérisé en ce que les signaux de référence de mesure de canal nouvellement conçus sont envoyés de façon répétée en plaine bande passante avec un espace égal en prenant un RB comme unité de composition prédéterminée, et le signal de référence de mesure de canal ayant 8 ports est situé sur le 14e symbole OFDM de la sous-trame d'envoi, dans lequel le port 0 du signal de référence de mesure de canal et le port 1 du signal de référence de mesure de canal sont mis en correspondance avec les 1ère et 2e sous-porteuses de manière adjacente, le port 2 du signal de référence de mesure de canal et le port 3 du signal de référence de mesure de canal sont mis en correspondance avec les 4e et 5e sous-porteuses de manière adjacente, le port 4 du signal de référence de mesure de canal et le port 5 du signal de référence de mesure de canal sont mis en correspondance avec les 7e et 8e sous-porteuses de manière adjacente, et le port 6 du signal de référence de mesure de canal et le port 7 du signal de référence de mesure de canal sont mis en correspondance avec les 10e et 11e sous-porteuses de manière adjacente.
     
    8. Procédé d'envoi d'un signal de référence de mesure de canal selon la revendication 2, caractérisé en ce que les signaux de référence de mesure de canal nouvellement conçus sont envoyés de façon répétée en plaine bande passante avec un espace égal en prenant deux RB comme unité de composition prédéterminée, et le signal de référence de mesure de canal ayant 8 ports est situé sur le 14e symbole OFDM de la sous-trame d'envoi, dans lequel :

    le port 0 du signal de référence de mesure de canal est mis en correspondance avec les 1ére, 9e et 17e sous-porteuses, le port 1 du signal de référence de mesure de canal est mis en correspondance avec les 2e, 10e et 18e sous-porteuses, le port 2 du signal de référence de mesure de canal est mis en correspondance avec les 3e, 11e et 19e sous-porteuses, le port 3 du signal de référence de mesure de canal est mis en correspondance avec les 4e, 12e et 20e sous-porteuses, le port 4 du signal de référence de mesure de canal est mis en correspondance avec les 5e, 13e et 21e sous-porteuses, le port 5 du signal de référence de mesure de canal est mis en correspondance avec les 6e, 14e et 22e sous-porteuses, le port 6 du signal de référence de mesure de canal est mis en correspondance avec les 7e, 15e et 23e; sous-porteuses, et le port 7 du signal de référence de mesure de canal est mis en correspondance avec les 8e, 16e et 24e sous-porteuses.


     
    9. Procédé d'envoi d'un signal de référence de mesure de canal selon la revendication 2, caractérisé en ce que les signaux de référence de mesure de canal nouvellement conçus sont envoyés de façon répétée en plaine bande passante avec un espace égal en prenant un RB comme unité de composition prédéterminée, et le signal de référence de mesure de canal ayant 8 ports est situé sur les 11e et 14e symboles OFDM de la sous-trame d'envoi, dans lequel :

    sur le 11e symbole, le port 0 et le port 1 du signal de référence de mesure de canal sont mis en correspondance avec les 1ère et 2e sous-porteuses de manière adjacente, le port 2 et le port 3 du signal de référence de mesure de canal sont mis en correspondance avec les 4e et 5e sous-porteuses de manière adjacente, le port 4 et le port 5 du signal de référence de mesure de canal sont mis en correspondance avec les 7e et 8e sous-porteuses de manière adjacente, et le port 6 et le port 7 du signal de référence de mesure de canal sont mis en correspondance avec les 10e et 11e sous-porteuses de manière adjacente ; et sur le 14e symbole OFDM, le port 0 et le port 1 du signal de référence de mesure de canal sont mis en correspondance avec les 7e et 8e sous-porteuses du 14e symbole de manière adjacente, le port 2 et le port 3 du signal de référence de mesure de canal sont mis en correspondance avec les 10e et 11e sous-porteuses du 14e symbole de manière adjacente, le port 4 et le port 5 du signal de référence de mesure de canal sont mis en correspondance avec les 1ère et 2e sous-porteuses du 14e symbole de manière adjacente, et le port 6 et le port 7 du signal de référence de mesure de canal sont mis en correspondance avec les 4e et 5e sous-porteuses du 14e symbole de manière adjacente.


     
    10. Procédé d'envoi d'un signal de référence de mesure de canal selon la revendication 2, caractérisé en ce que les signaux de référence de mesure de canal nouvellement conçus sont envoyés de façon répétée en plaine bande passante avec un espace égal en prenant deux RB comme unité de composition prédéterminée, et le signal de référence de mesure de canal ayant 8 ports est situé sur le 14e symbole OFDM de la sous-trame d'envoi, dans lequel :

    le port 0 du signal de référence de mesure de canal est mis en correspondance avec la 3e sous-porteuse, le port 1 du signal de référence de mesure de canal est mis en correspondance avec la 6e sous-porteuse, le port 2 du signal de référence de mesure de canal est mis en correspondance avec la 9e sous-porteuse, le port 3 du signal de référence de mesure de canal est mis en correspondance avec la 12e sous-porteuse, le port 4 du signal de référence de mesure de canal est mis en correspondance avec la 15e sous-porteuse, le port 5 du signal de référence de mesure de canal est mis en correspondance avec la 18e sous-porteuse, le port 6 du signal de référence de mesure de canal est mis en correspondance avec la 21e sous-porteuse, et le port 7 du signal de référence de mesure de canal est mis en correspondance avec la 24e sous-parteuse.


     
    11. Procédé d'envoi d'un signal de référence de mesure de canal selon la revendication 2, caractérisé en ce que les signaux de référence de mesure de canal nouvellement conçus sont envoyés de façon répétée en plaine bande passante avec un espace égal en prenant un RB comme unité de composition prédéterminée, et le signal de référence de mesure de canal ayant 8 ports est situé sur les 6e et 11e symboles OFDM de la sous-trame d'envoi, dans lequel :

    le port 0 et le port 4 du signal de référence de mesure de canal sont mis en correspondance avec la 1ère sous-porteuse, le port 1 et le port 5 du signal de référence de mesure de canal sont mis en correspondance avec la 4e sous-porteuse, le port 2 et le port 6 du signal de référence de mesure de canal sont mis en correspondance avec la 7e sous-porteuse, et le port 3 et le port 7 du signal de référence de mesure de canal sont mis en correspondance avec la 10e sous-porteuse.


     
    12. Procédé d'envoi d'un signal de référence de mesure de canal selon la revendication 2, caractérisé en ce que le signal de référence de mesure de canal est envoyé de façon répétée en plaine bande passante avec un espace égal en prenant un RB comme unité de composition prédéterminée, et le signal de référence de mesure de canal ayant 8 ports est situé sur le 6e symbole OFDM de la sous-trame d'envoi, dans lequel :

    le port 0 et le port 1 des signaux de référence de mesure de canal sont mis en correspondance avec les 1ère et 2e sous-porteuses de manière adjacente, le port 2 et le port 3 du signal de référence de mesure de canal sont mis en correspondance avec les 7e et 8e sous-porteuses de manière adjacente, les positions dans le domaine fréquentiel du port 4, du port 5. du port 6 et du port 7 du signal de référence de mesure de canal sont les mêmes respectivement que celles du port 0, du port 1, du port 2 et du port 3 du signal de référence de mesure de canal, et chaque port du signal de référence de mesure de canal est le même lorsqu'il est configuré en différents ports d'antenne et les mises en correspondance des signaux de référence de mesure de canal avec les ports 1, 2, 4 et 8 sont supportées en même temps.


     
    13. Procédé d'envoi d'un signal de référence de mesure de canal selon la revendication 2, caractérisé en ce que le signal de référence de mesure de canal est envoyé de façon répétée en plaine bande passante avec un espace égal en prenant un RB comme unité de composition prédéterminée, dans lequel :

    le signal de référence de mesure de canal ayant 8 ports est situé sur les 6e et 11e symboles OFDM de la sous-trame d'envoi, le port 0 de CSI-RS est mis en correspondance avec la 1ére sous-porteuse du 6e symbole OFDM, le port 1 de CSI-RS est mis en correspondance avec la 4e sous-porteuse du 6e symbole OFDM, le port 2 de CSI-RS est mis en correspondance avec la 7e sous-porteuse du 6e symbole OFDM, le port 3 de CSI-RS est mis en correspondance avec la 10e sous-porteuse du 6e symbole OFDM ; le port 4 de CSI-RS est mis en correspondance avec la 1ère sous-porteuse du 11e symbole OFDM, le port 5 de CSI-RS est mis en correspondance avec la 4e sous-porteuse du 11e symbole OFDM, le port 6 de CSI-RS est mis en correspondance avec la 7e sous-porteuse du 11e symbole OFDM, et le port 7 de CSI-RS est mis en correspondance avec la 10e sous-porteuse du 11e symbole OFDM.


     
    14. Procédé d'envoi d'un signal de référence de mesure de canal selon la revendication 2, caractérisé en ce que le signal de référence de mesure de canal est envoyé de façon répétée en plaine bande passante avec un espace égal en prenant un RB comme unité de composition prédéterminée, dans lequel :

    le signal de référence de mesure de canal ayant 8 ports est situé sur les 6e et 11e symboles OFDM de la sous-trame d'envoi, le port 0 et le port 1 de CSI-RS sont mis en correspondance avec les 1ére et 2e sous-porteuses du 6e symbole OFDM de manière adjacente, le port 2 et le port 3 de CSI-RS sont mis en correspondance avec les 7e et 8e sous-porteuses du 6e symbole OFDM de manière adjacente, et le port 4, le port 5, le port 6 et le port 7 sont mis en correspondance avec le 11e symbole, les positions dans le domaine fréquentiel de ces derniers étant respectivement les mêmes que celles du port 0, du port 1, du port 2 et du port 3.


     
    15. Procédé d'envoi d'un signal de référence de mesure de canal selon la revendication 2, caractérisé en ce que le signal de référence de mesure de canal est envoyé de façon répétée en plaine bande passante avec un espace égal en prenant un RB comme unité de composition prédéterminée, dans lequel :

    le signal de référence de mesure de canal ayant 8 ports est situé sur les 6e et 14e symboles OFDM de la sous-trame d'envoi, le port 0 et le port 1 de CSI-RS sont mis en correspondance avec les 1ère et 2e sous-porteuses du 6e symbole OFDM de manière adjacente, le port 2 et le port 3 de CSI-RS sont mis en correspondance avec les 7e et 8e sous-porteuses du 6e symbole OFDM de manière adjacente, et le port 4, le port 5, le port 6 et le port 7 sont mis en correspondance avec le 14e symbole, les positions dans le domaine fréquentiel de ces derniers étant respectivement les mêmes que celles du port 0, du port 1, du port 2 et du port 3.


     
    16. Système pour envoyer un signal de référence de mesure de canal, comprenant :

    un module d'envoi (1102) configuré pour envoyer le signal de référence de mesure de canal de chaque port dans une sous-trame ou deux sous-trames adjacentes au cours d'une période d'envoi et envoyer le signal de référence de mesure de canal de chaque port de façon répétée en pleine bande passante avec un espace égal dans l'unité d'une unité de composition prédéterminée,

    dans lequel chaque unité de composition prédéterminée comprend au moins un bloc de ressource (RB) ; le signal de référence de mesure de canal est envoyé en prenant N sous-trames comme période du domaine temporel du signal de référence de mesure de canal, caractérisé en ce que le module d'envoi (1102) comprend :

    une première unité d'établissement de numéro de port de signal de référence de mesure de canal (1102a), configurée pour concevoir des signaux de référence de mesure de canal ayant {1, 2, 4, 8} port(s), dans lequel le motif du signal de référence de mesure de canal ayant 1 port et celui du premier port du signal de référence de mesure de canal ayant 2 ports sont identiques, le motif du signal de référence de mesure de canal ayant 2 ports et celui des 2 premiers ports du signal de référence de mesure de canal ayant 4 ports sont identiques, et le motif du signal de référence de mesure de canal ayant 4 ports et celui des 4 premiers ports du signal de référence de mesure de canal ayant 8 ports sont identiques ; et

    une deuxième unité d'établissement de numéro de port de signal de référence de mesure de canal (1102b), configurée pour concevoir des signaux de référence de mesure de canal ayant {4, 8} ports, quand le nombre de ports d'antenne réel vaut de 4 à 8, le signal de référence de mesure de canal nouvellement conçu ayant 4 ou 8 ports réalise la mesure de canal descendante du système d'évolution à long terme amélioré, et quand le nombre de ports d'antenne réel est égal à 1 ou 2, le signal de référence commun du système LTE est réutilisé par le signal de référence de mesure de canal comme signal de référence de mesure de canal, afin de réaliser la mesure de canal descendante du système d'évolution à long terme amélioré, dans lequel le motif du signal de référence de mesure de canal ayant 4 ports et celui des 4 premiers ports du signal de référence de mesure de canal ayant 8 ports sont identiques.


     
    17. Système pour envoyer un signal de référence de mesure de canal selon la revendication 16, caractérisé en ce que les motifs des signaux de référence de mesure de canal pendant des périodes d'envoi différentes sont identiques, le signal de référence de mesure de canal est envoyé sur les 6e, 9e et 14e symboles de la sous-trame configurée, et le signal de référence de mesure de canal est envoyé en prenant une sous-trame ayant comme période n'importe quel nombre parmi 0, 2, 5, 10 et 20, et l'espace dans le domaine fréquentiel de l'espace égal avec lequel l'unité de composition prédéterminée du signal de référence de mesure de canal est répétée est {6, 8, 12, 16, 24, 30, 36, 42, 48}.
     
    18. Système pour envoyer un signal de référence de mesure de canal selon la revendication 16, caractérisé en ce qu'il comprend en outre :

    une unité d'envoi répété (1104), configurée pour envoyer de façon répétée le signal de référence de mesure de canal et les signaux de référence de mesure de canal nouvellement conçus sont envoyés de façon répétée en plaine bande passante avec un espace égal en prenant un ou deux RB comme unité de composition prédéterminée, dans laquelle le signal de référence de mesure de canal ayant 8 ports est situé sur le 14e symbole OFDM de la sous-trame d'envoi.


     




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    REFERENCES CITED IN THE DESCRIPTION



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    Patent documents cited in the description