(19)
(11)EP 2 777 350 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
22.07.2020 Bulletin 2020/30

(21)Application number: 12819010.5

(22)Date of filing:  06.11.2012
(51)International Patent Classification (IPC): 
H04W 72/04(2009.01)
H04L 5/00(2006.01)
H04L 1/18(2006.01)
(86)International application number:
PCT/IB2012/002669
(87)International publication number:
WO 2013/068841 (16.05.2013 Gazette  2013/20)

(54)

METHOD FOR DETERMINING/FACILITATING THE DETERMINATION OF PUCCH RESOURCE AND APPARATUS THEREOF

VERFAHREN ZUR BESTIMMUNG/VEREINFACHUNG DER BESTIMMUNG VON PUCCH-RESSOURCEN UND VORRICHTUNG DAFÜR

PROCÉDÉ POUR DÉTERMINER/FACILITER LA DÉTERMINATION D'UNE RESSOURCE PUCCH ET APPAREIL ASSOCIÉ


(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 RS SE SI SK SM TR

(30)Priority: 07.11.2011 CN 201110348875

(43)Date of publication of application:
17.09.2014 Bulletin 2014/38

(73)Proprietor: Alcatel Lucent
91620 Nozay (FR)

(72)Inventors:
  • SHE, Feng
    Shanghai 201206 (CN)
  • DENG, Yun, A.
    Shanghai 201206 (CN)
  • YANG, Hongwei, SH
    Shanghai 201206 (CN)

(74)Representative: DREISS Patentanwälte PartG mbB 
Friedrichstraße 6
70174 Stuttgart
70174 Stuttgart (DE)


(56)References cited: : 
EP-A1- 2 381 735
EP-A2- 2 383 928
  
  • RESEARCH IN MOTION ET AL: "PUCCH resource allocation for channel selection with Tx diversity", 3GPP DRAFT; R1-105511 (RIM-PUCCH-RESOURCE), 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Xi'an; 20101011, 5 October 2010 (2010-10-05), XP050450630, [retrieved on 2010-10-05]
  • HUAWEI ET AL: "Reserving two PUCCH ACK/NACK resources for channel selection from the PCell", 3GPP DRAFT; R1-105244, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Xi'an; 20101011, 5 October 2010 (2010-10-05), XP050450428, [retrieved on 2010-10-05]
  
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 communication field, and more particularly relates to a method for determining a Physical Uplink Control Channel PUCCH resource for a user equipment and a corresponding user equipment, and a method for facilitating the determination of a PUCCH resource for a user equipment and a corresponding base station, wherein the PUCCH resource is used to transmit a Hybrid Automatic Repeat Request HARQ feedback (ACK or NACK) of the user equipment with respect to its corresponding Physical Downlink Shared Channel PDSCH.

BACKGROUND OF THE INVENTION



[0002] Designing an Enhanced Physical Downlink Control Channel E-PDCCH is regarded as an effective method for expanding the scheduling capacity of a LTE-A system. The E-PDCCH supports demodulation based on a UE specific Demodulation Reference Signal (DM-RS) rather than a cell specific Reference Signal (CRS). Compared with the traditional Physical Downlink Control Channel PDCCH, more flexibility brought by an advanced antenna and a higher order modulation deployment may be desired in the E-PDCCH. The E-PDCCH may be achieved by enhancing the traditional PDCCH and/or designing a new PDCCH in a data region (i.e. Physical Downlink Shared Channel PDSCH).

[0003] According to the 3GPP related standards, a PUCCH resource used to transmit a HARQ feedback of a user equipment with respect to its corresponding PDSCH can be determined based on a Control Channel Element CCE scheduled for the user equipment in the PDCCH.

[0004] For the E-PDCCH, there also exists a need to determine a PUCCH resource used to transmit a HARQ feedback of a user equipment with respect to its corresponding PDSCH based on a Control Channel Element CCE scheduled for the user equipment in the E-PDCCH. EP 2 383 928 A2 discloses method and apparatus for allocating resource between uplink ACK/NACK channel and downlink control channel supporting spatial multiplexing in an OFDM-based wireless communication system.

SUMMARY OF THE INVENTION



[0005] According to a first aspect of the present invention, there is provided a method for determining a Physical Uplink Control Channel PUCCH resource for a user equipment, according to claim 1, wherein the PUCCH resource is used to transmit a Hybrid Automatic Repeat Request HARQ feedback of the user equipment with respect to its corresponding Physical Downlink Shared Channel PDSCH, the method inter alia comprising steps of: acquiring an index value for a Control Channel Element CCE scheduled for the user equipment in an Enhanced Physical Downlink Control Channel E-PDCCH; and determining, based on the index value and a first parameter, the PUCCH resource used to transmit the HARQ feedback of the user equipment with respect to its corresponding PDSCH, the first parameter representing a reference value that should be used when determining the PUCCH resource used to transmit the HARQ feedback of the user equipment with respect to its corresponding PDSCH, if scheduling the CCE for the user equipment in the E-PDCCH.

[0006] According to a second aspect of the present invention, there is provided a user equipment for determining a Physical Uplink Control Channel PUCCH resource for the user equipment, according to claim 3, wherein the PUCCH resource is used to transmit a Hybrid Automatic Repeat Request HARQ feedback of the user equipment with respect to its corresponding Physical Downlink Shared Channel PDSCH, the user equipment comprising: an acquiring unit configured to acquire an index value for a Control Channel Element CCE scheduled for the user equipment in an Enhanced Physical Downlink Control Channel E-PDCCH; and a determining unit configured to determine, based on the index value and a first parameter, the PUCCH resource used to transmit the HARQ feedback of the user equipment with respect to its corresponding PDSCH, the first parameter representing a reference value that should be used when determining the PUCCH resource used to transmit the HARQ feedback of the user equipment with respect to its corresponding PDSCH, if scheduling the CCE for the user equipment in the E-PDCCH.

[0007] According to the present invention, the PUCCH resource used to transmit the HARQ feedback of the user equipment with respect to its corresponding PDSCH can be determined based on the CCE scheduled for the user equipment in the E-PDCCH.

BRIEF DESCRIPTION OF THE DRAWINGS



[0008] Other objects and effects of the present invention will become clearer and easier to understand by making references to the following description taken in conjunction with the accompanying drawings and along with more comprehensive understanding of the present invention, wherein

FIG. 1 illustrates a wireless communication system where the present invention can be carried out.

FIG. 2 illustrates a signal flow diagram between a user equipment and a base station according to an example.

FIG. 3 illustrates a signal flow diagram between a user equipment and a base station according to an example.

FIG. 4 illustrates a signal flow diagram between a user equipment and a base station according to an embodiment of the present invention.

FIG. 5 illustrates a block diagram of a user equipment according to one embodiment of the present invention.

FIG. 6 illustrates a block diagram of a base station according to one embodiment of the present invention.



[0009] In all of the accompanying drawings, the same reference signs represent identical, similar or corresponding features or functions.

DETAILED DESCRIPTION OF EMBODIMENTS



[0010] Embodiments of the present invention will be described below in detail by making references to the accompanying drawings.

[0011] FIG. 1 illustrates a wireless communication system where the present invention can be carried out.

[0012] As illustrated in FIG. 1, the wireless communication system 100 comprises a first base station 110 corresponding to a first cell, a second base station 120 corresponding to a second cell, user equipments UEs130 and 140.

[0013] The first base station 110 provides a first coverage range 110-a, and the second base station 120 provides a second coverage range 120-a.

[0014] Here, the user equipment 130 is assumed within the first coverage range 110-a. Thus, the user equipment 130 communicates with the first base station 110 via a wireless link 150. The user equipment 140 is assumed within the second coverage range 120-a. Thus, the user equipment 140 communicates with the second base station 120 via a wireless link 160. In addition, the first base station 110 communicates with the second base station 120 via a backhaul link 170. The backhaul link 170 may be wired and may also be wireless.

[0015] Here, it is assumed that the first base station 110 and the second base station 120 are an evolved Node B (eNB).

[0016] Certainly, those skilled in the art would understand that the wireless communication system 100 may comprise more or less base stations, and each base station may comprise more or less user equipments.

[0017] FIG. 2 illustrates a signal flow diagram between a user equipment and a base station according to one embodiment of the present invention, wherein the user equipment is, for example, the user equipment 130 and the base station is, for example, the first base station 110.

[0018] As illustrated in FIG. 2, in Step S210, the base station 110 transmits a first parameter

to the user equipment 130 through RRC (Radio Resource Control) signaling (e.g. RRC connection reconfiguration signaling), the first parameter represents a reference value that should be used when determining a PUCCH resource used to transmit a HARQ feedback of the user equipment 130 with respect to its corresponding PDSCH, if scheduling a CCE for the user equipment 130 in an E-PDCCH. Hereinafter, the first parameter

is called as the reference value for E-PDCCH scheduling.

[0019] Then, the user equipment 130 determines, based on the first parameter and based on an index value neCCE for the CCE scheduled for the user equipment 130 in the E-PDCCH as acquired (Step S203) after receiving the first parameter from the base station 110, the PUCCH resource used to transmit the HARQ feedback of the user equipment 130 with respect to its corresponding PDSCH as illustrated in Step S220.

[0020] The PDCCH is organized by taking CCE as granularity. One CCE includes 9 REGs (Resource Element Groups) and one REG includes 4 REs (Resource Elements). Thus, one CCE includes 36 REs. The PDCCH resource occupied by a User Equipment UE may include 1, 2, 4 or 8 CCEs.

[0021] For the E-PDCCH, it may be organized by taking CCE as granularity and may also be organized by taking a new resource unit eCCE (enhanced Control Channel Element) as granularity. One eCCE may include one or more REs. A UE may acquire the size and position information of the eCCE by blindly detecting its own E-PDCCH through its own RNTI (Radio Network Temporary Identity), and then uses the size and position information to obtain neCCE.

[0022] According to one embodiment of the present invention, neCCE may be a minimum value, a maximum value or a mean value of index values for CCEs scheduled for the user equipment 130 in the E-PDCCH.

[0023] For example, if the CCEs with the index values 5, 6 and 7 are scheduled for the user equipment 130 while the CCEs with the index values 2, 3 and 4 are scheduled for other user equipments, in case that neCCE is the minimum value of the index values for the CCEs scheduled for the user equipment 130 in the E-PDCCH, then neCCE should be 5; in case that neCCE is the maximum value of the index values for the CCEs scheduled for the user equipment 130 in the E-PDCCH, then neCCE should be 7; in case that neCCE is the mean value of the index values for the CCEs scheduled for the user equipment 130 in the E-PDCCH, then neCCE should be 6.

[0024] In this embodiment of the present invention, the PUCCH resource used to transmit the HARQ feedback of the user equipment 130 with respect to its corresponding PDSCH is determined based on the formula below:


where

is the position of the PUCCH resource used to transmit the HARQ feedback of the user equipment 130 with respect to its corresponding PDSCH.

[0025] That is to say, in this embodiment, the position of the PUCCH resource used to transmit the HARQ feedback of the user equipment 130 with respect to its corresponding PDSCH is the sum of the index value for the CCE scheduled for the user equipment 130 in the E-PDCCH and the reference value for E-PDCCH scheduling.

[0026] FIG. 3 illustrates a signal flow diagram between a user equipment and a base station according to another embodiment of the present invention.

[0027] The signal flow diagram illustrated in FIG. 3 is substantially the same as that in FIG. 2 except that in Step S210', the first parameter transmitted to the user equipment 130 by the base station 110 through RRC signaling (e.g. RRC connection reconfiguration signaling) consists of a second parameter

and a third parameter Nadd, wherein the second parameter represents a reference value that should be used when determining the PUCCH resource used to transmit the HARQ feedback of the user equipment 130 with respect to its corresponding PDSCH, if scheduling the CCE for the user equipment 130 in a Physical Downlink Control Channel PDCCH, hereinafter the second parameter

will be called as a reference value for PDCCH scheduling; the third parameter Nadd represents an offset between the first parameter and the second parameter.

[0028] At present, the base station has transmitted through signaling the second parameter

to the user equipment it serves to enable the user equipment to determine, based on a Control Channel Element CCE scheduled for the user equipment in the PDCCH, the PUCCH resource used to transmit the HARQ feedback of the user equipment with respect to its corresponding PDSCH.

[0029] Since network side knows the complete scheduling information, it may calculate an accurate Nadd value and may inform the UE through RRC signaling.

[0030] In this embodiment of the present invention, the PUCCH resource used to transmit the HARQ feedback of the user equipment 130 with respect to its corresponding PDSCH is determined based on the formula below:



[0031] That is to say, in this embodiment, the position of the PUCCH resource used to transmit the HARQ feedback of the user equipment 130 with respect to its corresponding PDSCH is the sum of the offset indicated by the network side, the index value for the CCE scheduled for the user equipment in the E-PDCCH and the reference value for PDCCH scheduling as indicated by the network side.

[0032] In the embodiments as illustrated by FIG. 2 and FIG. 3, the first parameter or the second and third parameters used in determining the PUCCH resource used to transmit the HARQ feedback of the user equipment 130 with respect to its corresponding PDSCH are mainly determined by the network side.

[0033] The advantage of these embodiments is reducing the calculating burden of the user equipment.

[0034] FIG. 4 illustrates a signal flow diagram between a user equipment and a base station according to a further embodiment of the present invention.

[0035] The signal flow diagram illustrated in FIG. 4 is substantially the same as that in FIG. 3 except that in Step S210", the base station 110 only transmits the second parameter

to the user equipment 130 through RRC signaling (e.g. RRC connection reconfiguration signaling).

[0036] In addition, before Step S220, Step S201 is further comprised, i.e. the third parameter Nadd is calculated by the user equipment 130 itself.

[0037] The third parameter is calculated based on a setting of the amount of resources used by a Physical Control Format Indication Channel PCFICH and a Physical Hybrid Repeat Indication Channel PHICH, the number of system antennas, and downlink bandwidth of a cell accessed by the user equipment 130.

[0038] In the present invention, it can be deemed that it is necessary to enable the E-PDCCH only when the traditional PDCCH resources are insufficient or are used up. Thus, it can be deemed that Nadd is the maximum number of CCEs in the traditional PDCCH.

[0039] For the FDD system, it is assumed that 3 OFDM symbols of the traditional PDCCH are occupied by PCFICH+PHICH+PDCCH+reference signals; two antennas mean that 1/3 REs of the first OFDM symbol are occupied by the reference signals, then each RB remains 2 REGs and 20M bandwidth has 100 RBs, that is, 100*2=200REGs are remained; the other two OFDM symbols have 2*100*3=600REGs; the total is 800REGs; PCFICH generally occupies 4 REGs; PHICH group = NG*(100/8) (integer, taking the upper limit, wherein the NG value is used to configure PHICH and is determined by upper layer); e.g. NG=1, then there are 12 PHICH groups each including 3 REGs, and thus the PHICH occupies 3*12 = 36 REGs; finally PDCCH REGs=800-4-36=760; then CCEs=760/9=84; thus, Nadd=84.

[0040] For the TDD system, one uplink subframe may report HARQ ACK/NACK of several downlink subframes, e.g., if the number of the reported downlink subframes is 2, then Nadd = 2×84.

[0041] In this embodiment, the PUCCH resource used to transmit the HARQ feedback of the user equipment 130 with respect to its corresponding PDSCH is determined based on the formula below:



[0042] That is to say, in this embodiment, the position of the PUCCH resource used to transmit the HARQ feedback of the user equipment 130 with respect to its corresponding PDSCH is the sum of the offset calculated by the UE side, the index value for the CCE scheduled for the user equipment in the E-PDCCH and the reference value for PDCCH scheduling as indicated by network side.

[0043] The advantage of this embodiment is calculating the third parameter by the user equipment itself, and thus signaling between the base station and the user equipment can be saved.

[0044] Those skilled in the art would understand that in the embodiments as illustrated in FIG. 2-FIG. 4, before Steps S210, S210' and S210", steps for acquiring by the base station the first parameter, the second and third parameters, and the second parameter are further comprised. For example, the base station may acquire what values the first parameter, the second and third parameters, and the second parameter should take, by means of its complete understanding of the scheduling information.

[0045] FIG. 5 illustrates a block diagram of a user equipment according to one embodiment of the present invention.

[0046] The user equipment 500, for example, is the above-described user equipments 130 and 140.

[0047] As illustrated in FIG. 5, the user equipment 500 comprises an acquiring unit 510 configured to acquire an index value for a Control Channel Element CCE scheduled for the user equipment in an Enhanced Physical Downlink Control Channel E-PDCCH; and a determining unit 520 configured to determine, based on the index value and a first parameter, a PUCCH resource used to transmit a HARQ feedback of the user equipment with respect to its corresponding PDSCH, the first parameter representing a reference value that should be used when determining the PUCCH resource used to transmit the HARQ feedback of the user equipment with respect to its corresponding PDSCH, if scheduling the CCE for the user equipment in the E-PDCCH.

[0048] According to one embodiment of the present invention, the first parameter consists of a second parameter and a third parameter, wherein the second parameter represents a reference value that should be used when determining the PUCCH resource used to transmit the HARQ feedback of the user equipment with respect to its corresponding PDSCH, if scheduling the CCE for the user equipment in a Physical Downlink Control Channel PDCCH; the third parameter represents an offset between the first parameter and the second parameter.

[0049] According to one embodiment of the present invention, the user equipment 500 further comprises: a calculating unit 530 configured to calculate the third parameter; a receiving unit 540 configured to receive the second parameter from a serving base station of the user equipment through signaling.

[0050] According to one embodiment of the present invention, the receiving unit 540 is configured to receive the second parameter and the third parameter from a serving base station of the user equipment 500 through signaling.

[0051] According to one embodiment of the present invention, the third parameter is calculated based on a setting of the amount of resources used by a Physical Control Format Indication Channel PCFICH and a Physical Hybrid Repeat Indication Channel PHICH, the number of system antennas, and downlink bandwidth of a cell accessed by the user equipment.

[0052] According to one embodiment of the present invention, the receiving unit 540 is configured to receive the first parameter from a serving base station of the user equipment through signaling.

[0053] According to one embodiment of the present invention, what acquired by the acquiring unit 510 is a minimum value, a maximum value or a mean value of index values of CCEs scheduled for the user equipment in the E-PDCCH.

[0054] FIG. 6 illustrates a block diagram of a base station according to one embodiment of the present invention.

[0055] The base station 600, for example, is the above-described base stations 110 and 120.

[0056] As illustrated in FIG. 6, the base station 600 comprises a transmitting unit 610 configured to transmit, through signaling, a first parameter to a user equipment, the first parameter representing a reference value that should be used when determining a PUCCH resource used to transmit the HARQ feedback of the user equipment with respect to its corresponding PDSCH, if scheduling a Control Channel Element CCE for the user equipment in an Enhanced Physical Downlink Control Channel E-PDCCH.

[0057] According to one embodiment of the present invention, the first parameter consists of a second parameter and a third parameter, wherein the second parameter represents a reference value that should be used when determining the PUCCH resource used to transmit the HARQ feedback of the user equipment with respect to its corresponding PDSCH, if scheduling the CCE for the user equipment in a Physical Downlink Control Channel PDCCH; the third parameter represents an offset between the first parameter and the second parameter.

[0058] It should be noted that in order to make the present invention easier to understand, some more specific technical details that are well-known to those skilled in the art and may be essential for implementation of the present invention are omitted in the above descriptions.

[0059] Those skilled in the art should also understand that the present invention is not limited to the above-described steps and it further comprises the combination, order change, etc. of the above-described steps. The final scope of the present invention is defined by the appended claims.

[0060] Hence, selecting and describing the embodiments is to better explain the principle of the present invention and its actual application, and to make it clear for those of ordinary skill in the art that without departure from the essence of the present invention, all modifications and changes fall within the protection scope of the present invention defined by claims.


Claims

1. A method for determining a Physical Uplink Control Channel PUCCH resource for a user equipment (130), wherein the PUCCH resource is used to transmit a Hybrid Automatic Repeat Request HARQ feedback of the user equipment with respect to its corresponding Physical Downlink Shared Channel PDSCH, the method comprising steps of: the user equipment (130) acquiring (S203) an index value for a Control Channel Element CCE scheduled for the user equipment in an Enhanced Physical Downlink Control Channel E-PDCCH; and the user equipment (130) determining (S220), based on the index value and a first parameter, the PUCCH resource used to transmit the HARQ feedback of the user equipment with respect to its corresponding PDSCH, the first parameter representing a reference value that should be used when determining the PUCCH resource used to transmit the HARQ feedback of the user equipment (130) with respect to its corresponding PDSCH, if scheduling the CCE for the user equipment in the E-PDCCH, wherein the first parameter consists of a second parameter and a third parameter, wherein the second parameter represents a reference value that should be used when determining the PUCCH resource used to transmit the HARQ feedback of the user equipment with respect to its corresponding PDSCH, if scheduling the CCE for the user equipment (130) in a Physical Downlink Control Channel PDCCH; the third parameter represents an offset between the first parameter and the second parameter; and wherein the third parameter is calculated based on a setting of the number of resources used by a Physical Control Format Indication Channel PCFICH and a Physical Hybrid Repeat Indication Channel PHICH, the number of system antennas, and downlink bandwidth of a cell accessed by the user equipment (130), further comprising steps of: calculating (S201) the third parameter by the user equipment itself; receiving the second parameter from a serving base station of the user equipment by the user equipment through signaling.
 
2. The method according to claim 1, wherein what acquired in the acquiring step is a minimum value, a maximum value or a mean value of index values for CCEs scheduling for the user equipment (130) in the E-PDCCH.
 
3. A user equipment (500) for determining a Physical Uplink Control Channel PUCCH resource for the user equipment, wherein the PUCCH resource is used to transmit a Hybrid Automatic Repeat Request HARQ feedback of the user equipment with respect to its corresponding Physical Downlink Shared Channel PDSCH, the user equipment (500) comprising: an acquiring unit (510) configured to acquire an index value for a Control Channel Element CCE scheduled for the user equipment (500) in an Enhanced Physical Downlink Control Channel E-PDCCH; and a determining unit (520) configured to determine, based on the index value and a first parameter, the PUCCH resource used to transmit the HARQ feedback of the user equipment with respect to its corresponding PDSCH, the first parameter representing a reference value that should be used when determining the PUCCH resource used to transmit the HARQ feedback of the user equipment (500) with respect to its corresponding PDSCH, if scheduling the CCE for the user equipment in the E-PDCCH, wherein the first parameter consists of a second parameter and a third parameter, wherein the second parameter represents a reference value that should be used when determining the PUCCH resource used to transmit the HARQ feedback of the user equipment with respect to its corresponding PDSCH, if scheduling the CCE for the user equipment (500) in a Physical Downlink Control Channel PDCCH; the third parameter represents an offset between the first parameter and the second parameter; and wherein the third parameter is calculated based on a setting of the number of resources used by a Physical Control Format Indication Channel PCFICH and a Physical Hybrid Repeat Indication Channel PHICH, the number of system antennas, and downlink bandwidth of a cell accessed by the user equipment, further comprising: a calculating unit (530) configured to calculate the third parameter; a receiving unit (540) configured to receive the second parameter from a serving base station of the user equipment through signaling.
 
4. The user equipment (500) according to claim 3, wherein what acquired by the acquiring unit is a minimum value, a maximum value or a mean value of index values for CCEs scheduled for the user equipment in the E-PDCCH.
 


Ansprüche

1. Verfahren zum Bestimmen eines physikalischen Aufwärtsstreckensteuerkanalbetriebsmittels, PUCCH-Betriebsmittels, für ein Anwendergerät (130), wobei das PUCCH-Betriebsmittel verwendet wird, eine hybride automatische Wiederholungsanforderungsrückmeldung, HARQ-Rückmeldung, des Anwendergeräts in Bezug auf seinen entsprechenden gemeinsam verwendeten physikalischen Abwärtsstreckenkanal, PDSCH, zu senden, wobei das Verfahren die folgenden Schritte umfasst: Erfassen (S203) durch das Anwendergerät (130) eines Indexwerts für ein Steuerkanalelement, CCE, das für das Anwendergerät in einem erweiterten physikalischen Abwärtsstreckensteuerkanal, E-PDCCH, geplant ist; und Bestimmen (S220) durch das Anwendergerät (130) auf der Grundlage des Indexwerts und eines ersten Parameters des PUCCH-Betriebsmittels, das verwendet wird, um die HARQ-Rückmeldung des Anwendergeräts in Bezug auf seinen entsprechenden PDSCH zu senden, wobei der ersten Parameter einen Bezugswert repräsentiert, der verwendet werden sollte, wenn das PUCCH-Betriebsmittel bestimmt wird, das verwendet wird, um die HARQ-Rückmeldung des Anwendergeräts (130) in Bezug auf seinen entsprechenden PDSCH zu senden, wenn das CCE für das Anwendergerät im E-PDCCH geplant wird, der erste Parameter aus einem zweiten Parameter und einem dritten Parameter besteht, der zweite Parameter einen Bezugswert repräsentiert, der verwendet werden sollte, wenn das PUCCH-Betriebsmittel, das verwendet wird, um die HARQ-Rückmeldung des Anwendergeräts in Bezug auf seinen entsprechenden PDSCH zu senden, bestimmt wird, wenn das CCE für das Anwendergerät (130) in einem physikalischen Abwärtsstreckensteuerkanal, PDCCH, geplant wird; der dritte Parameter einen Versatz zwischen dem ersten Parameter und dem zweiten Parameter repräsentiert und der dritte Parameter auf der Grundlage einer Einstellung der Anzahl von Betriebsmitteln, die durch einen physikalischen Steuerformatanzeigekanal, PCFICH, und einen physikalischen hybriden Wiederholungsanzeigekanal, PHICH, verwendet werden, der Anzahl von Systemantennen und der Abwärtsstreckenbandbreite einer Zelle, auf die durch das Anwendergerät (130) zugegriffen wird, berechnet wird, und das ferner die folgenden Schritte umfasst: Berechnen (S201) des dritten Parameters durch das Anwendergerät selbst und Empfangen des zweiten Parameters von einer dienenden Basisstation des Anwendergeräts durch das Anwendergerät über eine Signalgebung.
 
2. Verfahren nach Anspruch 1, wobei das, was im Erfassungsschritt erfasst wird, ein Mindestwert, ein Höchstwert oder ein Mittelwert von Indexwerten für CCEs, die für das Anwendergerät (130) im E-PDCCH planen, ist.
 
3. Anwendergerät (500) zum Bestimmen eines physikalischen Aufwärtsstreckensteuerkanalbetriebsmittels, PUCCH-Betriebsmittels, für das Anwendergerät, wobei das PUCCH-Betriebsmittel verwendet wird, eine hybride automatische Wiederholungsanforderungsrückmeldung, HARQ-Rückmeldung, des Anwendergeräts in Bezug auf seinen entsprechenden gemeinsam verwendeten physikalischen Abwärtsstreckenkanal, PDSCH, zu senden, wobei das Anwendergerät (500) Folgendes umfasst: eine Erfassungseinheit (510), die konfiguriert ist zum Erfassen eines Indexwerts für ein Steuerkanalelement, CCE, das für das Anwendergerät (500) in einem erweiterten physikalischen Abwärtsstreckensteuerkanal, E-PDCCH, geplant ist; und eine Bestimmungseinheit (520), die konfiguriert ist zum Bestimmen auf der Grundlage des Indexwerts und eines ersten Parameters des PUCCH-Betriebsmittels, das verwendet wird, um die HARQ-Rückmeldung des Anwendergeräts in Bezug auf seinen entsprechenden PDSCH zu senden, wobei der erste Parameter einen Bezugswert repräsentiert, der verwendet werden sollte, wenn das PUCCH-Betriebsmittel bestimmt wird, das verwendet wird, um die HARQ-Rückmeldung des Anwendergeräts (500) in Bezug auf seinen entsprechenden PDSCH zu senden, wenn das CCE für das Anwendergerät im E-PDCCH geplant wird, der erste Parameter aus einem zweiten Parameter und einem dritten Parameter besteht, der zweite Parameter einen Bezugswert repräsentiert, der verwendet werden sollte, wenn das PUCCH-Betriebsmittel, das verwendet wird, um die HARQ-Rückmeldung des Anwendergeräts in Bezug auf seinen entsprechenden PDSCH zu senden, bestimmt wird, wenn das CCE für das Anwendergerät (500) in einem physikalischen Abwärtsstreckensteuerkanal, PDCCH, geplant wird; der dritte Parameter einen Versatz zwischen dem ersten Parameter und dem zweiten Parameter repräsentiert und der dritte Parameter auf der Grundlage einer Einstellung der Anzahl von Betriebsmitteln, die durch einen physikalischen Steuerformatanzeigekanal, PCFICH, und einen physikalischen hybriden Wiederholungsanzeigekanal, PHICH, verwendet werden, der Anzahl von Systemantennen und der Abwärtsstreckenbandbreite einer Zelle, auf die durch das Anwendergerät zugegriffen wird, berechnet wird, und das ferner Folgendes umfasst: eine Berechnungseinheit (530), die konfiguriert ist zum Berechnen des dritten Parameters, und eine Empfangseinheit (540), die konfiguriert ist zum Empfangen des zweiten Parameters von einer dienenden Basisstation des Anwendergeräts durch das Anwendergerät über eine Signalgebung.
 
4. Anwendergerät (500) nach Anspruch 3, wobei das, was durch die Erfassungseinheit erfasst wird, ein Mindestwert, ein Höchstwert oder ein Mittelwert von Indexwerten für CCEs, die für das Anwendergerät (130) im E-PDCCH geplant sind, ist.
 


Revendications

1. Procédé de détermination d'une ressource de type canal physique de commande montant, noté PUCCH, pour un équipement utilisateur (130), la ressource PUCCH étant utilisée pour transmettre un retour de type requête de répétition automatique hybride, notée HARQ, de l'équipement utilisateur par rapport à son canal physique partagé descendant, noté PDSCH, correspondant, le procédé comprenant les étapes suivantes : acquisition (S203), par l'équipement utilisateur (130), d'une valeur d'index pour un élément de canal de commande, noté CCE, ordonnancé pour l'équipement utilisateur dans un canal physique de commande descendant amélioré, noté E-PDCCH ; et détermination (S220), par l'équipement utilisateur (130), sur la base de la valeur d'index et d'un premier paramètre, de la ressource PUCCH utilisée pour transmettre le retour HARQ de l'équipement utilisateur par rapport à son PDSCH correspondant, le premier paramètre représentant une valeur de référence qui devrait être utilisée lors de la détermination de la ressource PUCCH utilisée pour transmettre le retour HARQ de l'équipement utilisateur (130) par rapport à son PDSCH correspondant en cas d'ordonnancement du CCE pour l'équipement utilisateur dans l'E-PDCCH, le premier paramètre étant constitué d'un deuxième paramètre et d'un troisième paramètre, le deuxième paramètre représentant une valeur de référence qui devrait être utilisée lors de la détermination de la ressource PUCCH utilisée pour transmettre le retour HARQ de l'équipement utilisateur par rapport à son PDSCH correspondant en cas d'ordonnancement du CCE pour l'équipement utilisateur (130) dans un canal physique de commande descendant, noté PDCCH ; le troisième paramètre représentant un décalage entre le premier paramètre et le deuxième paramètre ; et le troisième paramètre étant calculé sur la base d'un paramétrage du nombre de ressources utilisées par un canal physique indicateur de format de commande, noté PCFICH, et un canal physique indicateur de répétition hybride, noté PHICH, du nombre d'antennes système et d'une bande passante descendante d'une cellule à laquelle accède l'équipement utilisateur (130), comprenant en outre les étapes suivantes : calcul (S201) du troisième paramètre par l'équipement utilisateur lui-même ; réception, par l'équipement utilisateur, du deuxième paramètre en provenance d'une station de base de desserte de l'équipement utilisateur par le biais d'une signalisation.
 
2. Procédé selon la revendication 1, dans lequel une valeur minimale, une valeur maximale ou une valeur moyenne de valeurs d'index pour l'ordonnancement de CCE pour l'équipement utilisateur (130) dans l'E-PDCCH est acquise à l'étape d'acquisition.
 
3. Équipement utilisateur (500) permettant la détermination d'une ressource de type canal physique de commande montant, noté PUCCH, pour l'équipement utilisateur, la ressource PUCCH étant utilisée pour transmettre un retour de type requête de répétition automatique hybride, notée HARQ, de l'équipement utilisateur par rapport à son canal physique partagé descendant, noté PDSCH, correspondant, l'équipement utilisateur (500) comprenant : une unité d'acquisition (510) configurée pour acquérir une valeur d'index pour un élément de canal de commande, noté CCE, ordonnancé pour l'équipement utilisateur (500) dans un canal physique de commande descendant amélioré, noté E-PDCCH ; et une unité de détermination (520) configurée pour déterminer, sur la base de la valeur d'index et d'un premier paramètre, la ressource PUCCH utilisée pour transmettre le retour HARQ de l'équipement utilisateur par rapport à son PDSCH correspondant, le premier paramètre représentant une valeur de référence qui devrait être utilisée lors de la détermination de la ressource PUCCH utilisée pour transmettre le retour HARQ de l'équipement utilisateur (500) par rapport à son PDSCH correspondant en cas d'ordonnancement du CCE pour l'équipement utilisateur dans l'E-PDCCH, le premier paramètre étant constitué d'un deuxième paramètre et d'un troisième paramètre, le deuxième paramètre représentant une valeur de référence qui devrait être utilisée lors de la détermination de la ressource PUCCH utilisée pour transmettre le retour HARQ de l'équipement utilisateur par rapport à son PDSCH correspondant en cas d'ordonnancement du CCE pour l'équipement utilisateur (500) dans un canal physique de commande descendant, noté PDCCH ; le troisième paramètre représentant un décalage entre le premier paramètre et le deuxième paramètre ; et le troisième paramètre étant calculé sur la base d'un paramétrage du nombre de ressources utilisées par un canal physique indicateur de format de commande, noté PCFICH, et un canal physique indicateur de répétition hybride, noté PHICH, du nombre d'antennes système et d'une bande passante descendante d'une cellule à laquelle accède l'équipement utilisateur, comprenant en outre : une unité de calcul (530) configurée pour calculer le troisième paramètre ; une unité de réception (540) configurée pour recevoir le deuxième paramètre en provenance d'une station de base de desserte de l'équipement utilisateur par le biais d'une signalisation.
 
4. Équipement utilisateur (500) selon la revendication 3, dans lequel une valeur minimale, une valeur maximale ou une valeur moyenne de valeurs d'index pour des CCE ordonnancés pour l'équipement utilisateur dans l'E-PDCCH est acquise par l'unité d'acquisition.
 




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Cited references

REFERENCES CITED IN THE DESCRIPTION



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Patent documents cited in the description