Method and system for reducing channel interference in a frame-synchronized wireless communication system
First Claim
1. A method for reducing channel interference in a communication system that includes base stations, with each base station having a plurality of sectors and each sector having a channel, and terminal stations with each terminal station associated with a base station sector, the method comprising:
- determining a first set of terminal stations in a first base station sector that operate using a channel that potentially interferes with a second set of terminal stations in a second base station sector that operate on the same channel as the first base station sector, where the first set of terminal stations lie along a line of sight that passes through the second base station sector;
selecting a first sub-channel for use by the first set of terminal stations;
selecting a second sub-channel for use by the second set of terminal stations; and
coordinating uplink transmissions by the first set of terminal stations with uplink transmissions by the second set of terminal stations, the first set of terminal stations uplink using the first sub-channel and the second set of terminal stations uplink using the second sub-channel, thereby reducing channel interference at the second base station sector.
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Accused Products
Abstract
A method reduces channel interference in a communication system that includes base stations and terminal stations with each base station having a plurality of sectors, each sector having a channel, and with each terminal station associated with a sector of a base station. A first set of terminal stations associated with a first sector that may potentially interfere with a second set of terminal stations associated with a second sector is determined. A first frequency sub-channel for use by the first set of terminal stations is selected and a second frequency sub-channel for use by the second set of terminal stations is selected. Transmissions by the first set of terminal stations are coordinated with transmissions by the second set of terminal stations, thereby reducing channel interference between the terminal stations of the first set and the terminal stations of the second set, as seen by a base station in the first or second sector.
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Citations
18 Claims
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1. A method for reducing channel interference in a communication system that includes base stations, with each base station having a plurality of sectors and each sector having a channel, and terminal stations with each terminal station associated with a base station sector, the method comprising:
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determining a first set of terminal stations in a first base station sector that operate using a channel that potentially interferes with a second set of terminal stations in a second base station sector that operate on the same channel as the first base station sector, where the first set of terminal stations lie along a line of sight that passes through the second base station sector; selecting a first sub-channel for use by the first set of terminal stations; selecting a second sub-channel for use by the second set of terminal stations; and coordinating uplink transmissions by the first set of terminal stations with uplink transmissions by the second set of terminal stations, the first set of terminal stations uplink using the first sub-channel and the second set of terminal stations uplink using the second sub-channel, thereby reducing channel interference at the second base station sector.
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2. A method for reducing channel interference in a communication system that includes base stations and terminal stations with each base station having a plurality of sectors, each sector having a channel, and with each terminal station associated with a sector of a base station, the method comprising:
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determining a first set of terminal stations associated with a first sector that may potentially interfere with a second set of terminal stations associated with a second sector; selecting a first frequency sub-channel for use by the first set of terminal stations; selecting a second frequency sub-channel for use by the second set of terminal stations; and coordinating uplink transmissions by the first set of terminal stations with uplink transmissions by the second set of terminal stations, thereby reducing channel interference between the terminal stations of the first set and the terminal stations of the second set, as seen by a base station in the first or second sector. - View Dependent Claims (15)
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3. A method for reducing channel interference in a communication system that includes base stations and terminal stations with each base station having sectors, each sector having a communication channel and each terminal station in a base station sector, the method comprising:
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determining a first set of terminal stations in a first base station sector that may potentially interfere with a second set of terminal stations in a second base station sector; defining a first frequency sub-channel within the communication channel of the first base station sector for use by the first set of terminal stations; defining a second frequency sub-channel within the communication channel of the second base station sector for use by the second set of terminal stations; and coordinating downlink transmissions to the first set of terminal stations with downlink transmissions to the second set of terminal stations, thereby reducing channel interference between the terminal stations of the first set and the terminal stations of the second set, as seen by one or more terminal stations of the first or second set of terminal stations. - View Dependent Claims (16)
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4. A method for reducing channel interference in a communication system that includes terminal stations operating within at least two base station sectors with each sector having a communication channel, the method comprising:
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identifying in a first sector a first set of terminal stations that may potentially interfere with a second set of terminal stations in a second sector; separating a radio frequency channel into a first sub-channel and a second sub-channel; establishing communications with the first set of terminal stations over the first sub-channel, and establishing communications with the second set of terminal stations over the second sub-channel wherein the frequency of the first sub-channel and the second sub-channel are orthogonal; and coordinating communication to and from the first set of terminal stations and communications to and from the second set of terminals stations to minimize channel interference. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 17, 18)
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Specification