Disturbance control method based on OSI bit

Abstract

The invention discloses an interference control method based on OSI bit, comprising the following steps: the OSI bit and filter parameters of a subzone are received through a port; a terminal completes soft demodulation of the OSI bit information of an originating terminal; according to the received filter parameters, filtering processing of the soft OSI bit is completed by a filter; finally, power steplength is adjusted according to the output value of the filter. The method can effectively control the interference on other subzones caused by AT, and can inhibit the intense fluctuation of the OSI bit, thereby realizing smooth interference control and reduces the interference on other subzones; meanwhile, the method can furthest improve the stability and interference control performance of a system on the premise of safety and reliability; moreover, the method also increases the capacity of the system.

Description

technical field [0001] The present invention relates to an interference control method of a wireless communication system, in particular to a reverse interference control method in an Orthogonal Frequency Division Multiple Access (OFDMA, Orthogonal Frequency Division Multiple Access) communication system. Background technique [0002] Broadband wireless access technologies such as Wimax pose challenges to cellular mobile communication technologies, and accelerate the research and standardization process of third-generation mobile communication evolution technologies with higher transmission rates. Both the international standard organization 3GPP and 3GPP2 have initiated research and standardization work on a new round of 3G evolution technology. At present, the 3GPP2 radio interface evolution (AIE-Air interference Evolution) project has made progress in the formulation of air interface layer 2 and higher layer standards, and the formulation of air interface physical layer s...

AI Technical Summary

Problems solved by technology

[0012] In the technical solution disclosed in U.S. Patent No. US2006209721, the invention name Interference control in a wireless communication system, the AT directly uses the received OSI bits to adjust the power of the reverse traffic channel. This method has two disadvantages: (1) when When the OSI changes from 0 to 2 and from 2 to 0, the AT’s transmit power adjustment step size may change greatly, which will cause great interference to other surrounding cells. (2) Since the OSI and FOSI information has no error protection, AT solution Time adjustment may lead to bit misjudgment and false alarm due to the harsh wireless environment. The above two shortcomings eventually lead to the inability to effectively eliminate interference, resulting in a reduction in system capacity and system performance.

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