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 Method and apparatus for allocating radio channels

Details
Inventors: Edwards, Keith Russell;
Assignee: Nortel Networks Corporation (Montreal, CA)
Primary Examiner: Hunter; Daniel S.
Assistant Examiner: Woldetatios; Yemane
Attorney, Agent or Firm: Lee, Mann, Smith, McWilliams, Sweeney & Ohlson

A fixed wireless access communication network is described. The capacity of a fixed wireless access network is limited by the number of radio frequencies and hence the numberof channels available. The present invention prepares a solution to this problem whenever the radio channels are transmitted at one of at least two power levels.

DETAILED DESCRIPTION According to a first aspect of the present invention there is provided a method of radio channel allocation in a fixed wireless access communications network, said network comprising: (i) a base station; (ii) a plurality of subscriber stations; and wherein the base station and the subscriber stations are adapted such that communication between the base station and the subscriber stations is achieved in use, using one of a number of radio channels, each radio channel having a different frequency; and wherein each radio channel is transmitted at one of at least two power levels, said method comprising the step of: allocating a radio channel for use in communicating between one of the subscriber stations and the base station according to the distance of the subscriber station from the base station, such that in use, channel frequencies of channels transmitted at relatively low power levels can be used again to establish communication between a subscriber and a second base station at a distance closer to the first base station than otherwise would have been possible.
A corresponding apparatus, for radio channel allocation in a fixed wireless access communications network is also provided, said network comprising (i) a base station; (ii) a plurality of subscriber stations; and wherein the base station and the subscriber stations are adapted such that communication between the base station and the subscriber stations is achieved in use, using one of a number of radio channels, each radio channel having a different frequency; and wherein each radio channel is transmitted at one of at least two power levels, said apparatus comprising: an allocator arranged to allocate a radio channel for use in communicating between one of the subscriber stations and the base station according to the distance of the subscriber station from the base station, such that in use, channel frequencies of channels transmitted at relatively low power levels can be used again to establish communication between a subscriber and a second base station at a distance closer to the first base station than otherwise would have been possible



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