Anti-blocking interference protection method for wireless base station

Abstract

The invention relates to a wireless base station anti-block interference protecting method, comprising: determining the largest dynamic range DR which a receiver can reach and the smallest reference sensitivity RS which is required by network planning; through measuring or computing to obtain, in order to avoid blocking, the receiver at least requires to resist large signal interference with intensity Blocking 1; ensuring sensitivity performance of the receiver through designment: a) the sensitivity is not lower than RS+3dB when the anti-block interference intensity is RS+DR+3dB; b) the sensitivity is not lower than Blocking 1-DR-3dB when the anti-block interference is Blocking 1. According to the method, under the condition that the design dynamic range of the limited receiver is not changed, the smallest receiver sensitivity which is required is ensured, and the receiver is protected from interfering by large signals, thereby avoiding severe district blocking.

Description

technical field [0001] The present invention relates to a wireless base station (Base Transceiver Station, BTS for short), in particular to a method for protecting a wireless base station from blocking and interference. Background technique [0002] Any receiver has a certain receiving dynamic range. When the received power exceeds the maximum power level allowed by the receiving dynamics, it will cause the receiver to saturate and block, which is called blocking interference. Wireless communication system receivers usually face various The impact of interference, the most serious impact comes from blocking interference, blocking will cause the receiver to fail to work normally, and long-term blocking may also cause permanent performance degradation of the receiver; receiver sensitivity (reference sensitivity) refers to the receiver under the condition of no interference signal The lowest signal strength that can be decoded by the receiver. [0003] The receiver blocking in...

AI Technical Summary

Problems solved by technology

However, when the anti-blocking index of the receiver is improved while other indexes remain unchanged, the design dynamic range of the receiver needs to be increased, and higher technology and accessories are required, which increases the production cost of the equipment. For equipment such as multicarrier BTS (MCBTS for short), it is difficult for the digital-to-analog conversion device to meet the above-mentioned index requirements at a reasonable cost.

Therefore, especially for multi-carrier base stations, if the sensitivity of the receiver is to be guaranteed, it is difficult to ensure sufficient anti-blocking capability, so that when the receiver encounters a large interference signal, the system will be seriously affected

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