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Method and system for reducing channel interference in a frame-synchronized wireless communication system

DC
  • US 7,177,598 B2
  • Filed: 09/05/2001
  • Issued: 02/13/2007
  • Est. Priority Date: 11/15/2000
  • Status: Expired due to Fees
First Claim
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1. A method of reducing co-channel interference in a communication system having base stations and terminal stations with each terminal station associated with one base station sector, each base station has an associated and corresponding cell, each cell includes a plurality of associated and corresponding sectors, each sector of each cell having a different channel than the other sectors of the same cell, the communication system comprises an uplink and a downlink with each including at least one slot, and the uplink comprises an uplink signal divided in the frequency domain into a plurality of channels, the method comprising:

  • determining a set of terminal stations that may potentially interfere with each other at a selected base station sector if they use the same channel;

    determining a first subset of the set of terminal stations such that the subset communicates with a first set of associated and corresponding base station sectors that are arranged along a first line of sight that includes the selected base station;

    determining a second subset of the set of terminal stations, wherein the subset communicates with a second set of associated and corresponding base station sectors that are arranged along a second line of sight which is parallel with the first line of sight;

    allocating a first up link channel for the first subset of terminal stations; and

    allocating a second uplink channel for the second subset of terminal stations.

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