Method and device for adaptively eliminating interference of adjacent base station
A technology of base station and target base station, applied in baseband system components, shaping network in transmitter/receiver, space transmit diversity, etc., can solve problems that have not been proposed and improve communication performance in edge areas of coverage areas
Inactive Publication Date: 2013-01-09
北京海兰德维通信技术有限公司
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Problems solved by technology
In addition, in the WiMAX technology, no effective measures have been proposed for the data channel to improve the communication performance in the edge area of the coverage area.
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[0114] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0115] figure 1 It is a schematic diagram of the coverage area of the central base station of the cellular network being interfered by adjacent base stations, figure 1, including base station coverage units 1, 2, 3, 4, 5, 6, and 7, wherein the central base station coverage unit 1 is adjacent to adjacent base station coverage units 2, 3, 4, 5, 6, and 7. The hexagonal area within the coverage unit 1 of the central base station is defined as the central area covered by the base station, and the mobile terminals located in this area and belonging to the coverage unit 1 of the central base station will receive weak signals from adjacent base stations 2, 3, 4, 5, 6, and 7. Interfering signal; triangular area is defined as the coverage area edge area of central base station coverage unit 1 and every 2 adjacent base station coverage units, for ex...
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The invention discloses a method and a device for adaptively eliminating interference of an adjacent base station. The method comprises the following steps: receiving physical data blocks, preamble symbols or pilot symbol sequences from a target base station and the adjacent base station through at least two receiving antennae; obtaining received signal strength values of the target base station and the adjacent base station according to the preamble symbols or the pilot symbol sequences; setting a threshold value for distinguishing the coverage area of the target base station; comparing the received signal strength values of the target base station and the adjacent base station with the threshold value to determine the coverage area of the target base station where a mobile terminal is; and according to the coverage area of the target base station where the mobile terminal is, adopting the combination of adjacent base station interference elimination and maximum specific synthesis toprocess the received physical data blocks. Through the method and the device, the data throughput of the central coverage area of the base station is maximally improved while the communication characteristics of edges of the coverage area of the base station are improved.
Description
technical field [0001] The present invention mainly relates to the field of wireless communication, in particular to a method and device for adaptively eliminating the interference of adjacent base stations. Background technique [0002] In a cellular wireless communication network, about 20% of the mobile users are located in the edge area of the coverage area of the handoff of the base station. In this area, interference from adjacent base stations has a great impact on the communication quality of mobile users, and sometimes even causes mobile users to fail to communicate normally. At present, in the Worldwide Interoperability for Microwave Access (WiMAX, Worldwide Interoperability for Microwave Access) technology, the frequency reuse of 1 / 3 / 3 is adopted for the control channel, that is, one base station coverage unit (Cell), three sectors, and three frequency bands method, the purpose of which is to avoid interference at the edge of the coverage area. However, this...
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IPC IPC(8): H04B7/08H04L25/02H04L25/03
Inventor 孙伟民
Owner 北京海兰德维通信技术有限公司