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1. (WO1991007019) ZONED MICROCELL WITH SECTOR SCANNING FOR CELLULAR TELEPHONE SYSTEMS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/007019 International Application No.: PCT/US1990/005980
Publication Date: 16.05.1991 International Filing Date: 18.10.1990
Chapter 2 Demand Filed: 08.05.1991
IPC:
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)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
7
Radio transmission systems, i.e. using radiation field
24
for communication between two or more posts
26
at least one of which is mobile
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
Q
AERIALS
21
Aerial arrays or systems
06
Arrays of individually energised aerial units similarly polarised and spaced apart
22
Aerial units of the array energised non-uniformly in amplitude or phase, e.g. tapered array, binomial array
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
7
Radio transmission systems, i.e. using radiation field
02
Diversity systems
04
using a plurality of spaced independent aerials
08
at receiving station
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
16
Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cell structures
24
Cell structures
26
Cell enhancers, e.g. for tunnels or building shadow
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
16
Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cell structures
24
Cell structures
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
16
Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cell structures
24
Cell structures
28
using beam steering
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
36
Handoff or reselecting arrangements
16
Performing reselection for specific purposes
18
for allowing seamless reselection, e.g. soft reselection
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
88
Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
08
Access point devices
Applicants:
PACTEL CORPORATION [US/US]; 130 Kearny Street San Francisco, CA 94108, US
Inventors:
LEE, William, Chien-Yeh; US
Agent:
McCUBBREY, J., Bruce ; McCubbrey, Bartels, Meyer & Ward One Post Street Suite 2700 San Francisco, CA 94104, US
Priority Data:
432,51107.11.1989US
Title (EN) ZONED MICROCELL WITH SECTOR SCANNING FOR CELLULAR TELEPHONE SYSTEMS
(FR) MICROCELLULE DIVISEE EN ZONES A BALAYAGE DE SECTEURS POUR SYSTEMES TELEPHONIQUES CELLULAIRES
Abstract:
(EN) 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.
(FR) Un système (1) de microcellules divisé en zones, à balayage de secteurs, pour systèmes téléphoniques cellulaires, comporte une pluralité de cellules contiguës, ayant chacune un ensemble différent et assigné de canaux de fréquences de transmission, et une capacité de transfert permettant de maintenir une communication de cellule à cellule. Le système comprend au moins une cellule (11) dotée d'une pluralité d'ensembles d'antennes (13, 15, 17). Chaque ensemble est positionné au niveau d'un sous-site (10, 16, 18) respectif et est configuré de sorte que la propagation et la réception de signaux sont limitées à une zone (13z, 15z, 17z) de transmission se trouvant dans les limites de la cellule, et représentant moins en superficie que cette dernière. Un dispositif (79) de commande contrôle l'intensité du signal reçu par chaque ensemble d'antennes. La transmission, au niveau de chaque canal de fréquence, est confinée à l'ensemble d'antennes ayant le signal reçu le plus fort, limitant ainsi la propagation du signal à cette zone de transmission. Dans un mode de réalisation, le contrôle d'intensité du signal est prévu au niveau de chaque sous-site, ainsi la transmission est limitée à un sous-ensemble spécifique d'antennes au niveau du sous-site, et à un secteur (115x, 115y, 115z) limité dans la zone de transmission.
Designated States: CA, JP
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0500654