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Home Telecommunications Methods-and-systems-for-allocating-a-cellular-communications-channel-for-communication-between-a-cellular-terminal-and-a-telephone-base-station-using-received-signal-strength-measurements

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 Methods and systems for allocating a cellular communications channel for communication between a cellular terminal and a telephone base station using received signal strength measurements

Details
Inventors: Haartsen, Jacobus Cornelius; Dent, Paul W.;
Assignee: Ericsson Inc. (Triangle Park, NC)
Primary Examiner: Bost; Dwayne
Assistant Examiner: Maung; Nay
Attorney, Agent or Firm: Myers Bigel Sibley & Sajovec

A cellular communications channel is allocated for communication between a cellular terminal and a telephone base station wherein the telephone base station connects a wire telephone network to the cellular terminal within a local region in a cell of a wide area cellular network which uses a plurality of control channels and communications channels within a cellular network spectrum, by controlling the cellular terminal to measure the received signal strengths of the control and communications channels. The cellular terminal is controlled to measure received signal strengths of the control channels. A set of communications channels associated with measured control channel having lowest received signal strength is identified. The cellular terminal is then caused to measure the received signal strengths of the set of communications channels. A communications channel having the lowest received signal strength is selected from the set of communications channels. The selected communications channel having lowest received signal strength is used for communication between the cellular terminal and the telephone base station within the local region. The selected communications channel reduces co-channel interference between the telephone base station and the wide area cellular network and also reduces co-channel interference among the telephone base stations themselves.

DETAILED DESCRIPTION It is therefore an object of the present invention to provide methods and systems for allocating a cellular communications channel for communication between a cellular terminal and a telephone base station.
It is another object of the invention to provide methods and systems for allocating a cellular communications channel for communication between a cellular terminal and a telephone base station without requiring knowledge of the location of the telephone base station.
It is yet another object of the present invention to provide methods and systems for allocating a cellular communications channel for communication between a cellular terminal and a telephone base station which reduce co-channel interference between adjacent telephone base stations having overlapping local regions.
These and other objects are provided according to the present invention by using the cellular terminal to measure received signal strength of control channels and communications channels (also known as "voice channels" or "traffic channels") within the local region and using the received signal strengths to allocate a cellular communications channel between the cellular terminal and the telephone base station.
The selected communications channel reduces co-channel interference between the telephone base station and the wide area cellular network and also reduces co-channel interference among the telephone base stations themselves.
In particular, according to the invention, a cellular communications channel is allocated for communication between a cellular terminal and a telephone base station wherein the telephone base station connects a wire telephone network to the cellular terminal within a local region in a cell of a wide area cellular network which uses a plurality of control channels and communications channels within a cellular network spectrum.
The cellular terminal is controlled to measure received signal strengths of the control channels.
A set of communications channels associated with a measured control channel having lowest received signal strength is identified


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