EP 0500654 A4 19930804 - ZONED MICROCELL WITH SECTOR SCANNING FOR CELLULAR TELEPHONE SYSTEMS

Title (en)

ZONED MICROCELL WITH SECTOR SCANNING FOR CELLULAR TELEPHONE SYSTEMS

Publication

EP 0500654 A4 19930804 (EN)

Application

EP 90916653 A 19901018

Priority

CA 2106017 A 19930913
US 43251189 A 19891107

Abstract (en)

[origin: WO9107019A1] A zoned microcell system (1) with sector scanning for cellular telephone systems has a plurality of contiguous cells, each having a different assigned set of transmission frequency channels, and handoff capability for maintaining communication from cell to cell. The system includes at least one cell (11) having a plurality of antenna sets (13, 15, 17). Each set is positioned at a respective sub-site (10, 16, 18), and configured so that propagation and reception of signals is limited to a transmission zone (13z, 15z, 17z) within the boundaries of, and which is less in area than the cell. A control device (79) monitors the strength of the signal received by each antenna set. Transmission, at each frequency channel, is confined to the antenna set having the strongest received signal thus limiting signal propagation to that transmission zone. In one embodiment, signal strength monitoring is provided at each sub-site, thus transmission is confined to a specific sub-set of antennas at the sub-site, and to a limited sector (115x, 115y, 115z) within the transmission zone.

IPC 1-7

H04B 7/00; H04M 11/00

IPC 8 full level

H04B 7/26 (2006.01); H01Q 21/22 (2006.01); H04B 7/08 (2006.01); H04W 16/26 (2009.01); H04W 16/24 (2009.01); H04W 16/28 (2009.01); H04W 36/18 (2009.01); H04W 88/08 (2009.01)

CPC (source: EP)

H01Q 21/22 (2013.01); H04B 7/0802 (2013.01); H04W 16/26 (2013.01); H04W 16/24 (2013.01); H04W 16/28 (2013.01); H04W 36/18 (2013.01); H04W 88/085 (2013.01)

Citation (search report)

[Y] US 4759051 A 19880719 - HAN KUIXUAN [US]
[Y] DE 2326163 A1 19741212 - TEKADE FELTEN & GUILLEAUME
[A] US 4144411 A 19790313 - FRENKIEL RICHARD H
See also references of WO 9107019A1

Designated contracting state (EPC)

DE FR GB GR NL SE

DOCDB simple family (publication)

WO 9107019 A1 19910516; CA 2106017 A1 19950314; EP 0500654 A1 19920902; EP 0500654 A4 19930804; JP H05503616 A 19930610

DOCDB simple family (application)

US 9005980 W 19901018; CA 2106017 A 19930913; EP 90916653 A 19901018; JP 51559990 A 19901018