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 Multiple antenna cellular network

Details
Inventors: Chavez, David A.; Sayers, Ian L.; Sage, Gerald F.;
Assignee: InterWAVE Communications International Ltd. (Hamilton, BM)
Primary Examiner: Nguyen; Lee
Assistant Examiner:
Attorney, Agent or Firm: Flehr Hohbach Test Albritton & Herbert LLP

A multiple antenna cellular network communicates with a mobile station over a plurality of antennas. The antennas are arranged in a plurality of positions to customize a cell or cells. A transceiver is coupled to the antennas and configured to receive inbound information from the mobile station and transmit outbound information to the mobile station. A processor is coupled to the transceiver and configured to decode the inbound information and to encode the outbound information to communicate with the mobile station. In another embodiment, the transmit signal power is continuously modified to move interference nulls to improve quality so that a fixed location user can receive a high quality signal. Exemplary embodiments are provided for use with the Global Systems for Mobile Communication (GSM) protocol and can be applied to other digital technologies.

DETAILED DESCRIPTION The present invention relates to a multiple antenna cellular network.
In particular, the invention is used in a cellular communication network to custom configure cell boundaries to accommodate obstacles such as walls, ceilings, floors and buildings, to reduce interference, to improve performance and to improve quality of service.
Exemplary embodiments are provided for use with a TDMA communication protocol and the Global Systems for Mobile Communication (GSM) communication protocol and can be applied to other cellular communication and digital technologies.
An overview of GSM is described in the U.
S.
patent application SPREAD SPECTRUM COMMUNICATION NETWORK WITH ADAPTIVE FREQUENCY AGILITY, U.
S.
Ser.
No.
08/474,597, filed on May 4, 1995.
Exemplary embodiments are described herein with reference to specific configurations and protocols.
For example, the embodiments are described as employing non-frequency-hopping communication, but could be implemented to frequency hop.
Those skilled in the art will appreciate that various changes and modifications can be made to the exemplary embodiments while remaining within the scope of the present invention.
The invention can be employed using any TDMA, FDMA, CDMA or other similar communication protocol.
Network Configuration FIG.
1 is a general illustration of a multiple antenna cellular network according to an embodiment of the invention.
FIG.
1 shows two cells 115 and 119 in a building installation.
While the embodiment is explained with reference to cell 115 and the components thereof, the explanation is equally applicable to cell 119 and the components thereof.
A plurality of remote transceivers 112a-c are positioned at a number of locations 114a-c to develop cell 115.
Each location 114a-c represents a sub-cell that develops cell 115.
For example, remote transceivers 112a-c can be placed in rooms or in hallways to develop cell 115.
Cell 115 has a shape that is defined by remote transceivers 112a-c and the radiated power associated with each remote transceiver 12a-c



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