PHS base station switching method and its device

Abstract

The invention relates to a PHS base station switch method and a relative device, wherein it comprises: A, checking the error frame code of PHS system and receiving the information of signal field strength; B, based on the checked information and the different switch reasons, the first confirmed base station initializes the switch priority judge to judge the switch type of PHS system and initializes the relative switch request. Said device comprise: a FER detector and a RSSI detector for detecting the information; a base station switch initialize controller for judging the switch type and initializing the switch request based on the switch priority; and a base station switch controller for responding the switch request and controlling the switch. The invention can improve the switch property of system.

Description

technical field [0001] The present invention relates to a PHS (Personal Handyphone System) base station switching method and its device, in particular to a base station switching method and its device which can deal with various causes of switching to improve switching performance. Background technique [0002] The PHS system, also known as wireless local telephone in China, can provide cheap mobile services and has developed rapidly in China. On the one hand, the PHS base station works in the frequency band of 1900 MHz, and the wireless propagation in this frequency band has the characteristics of relatively large signal fluctuation and poor penetration, which is easy to cause switching. On the other hand, the power of the PHS base station is small, and the coverage area is small, and it is easy for the user to go out of the coverage area of ​​the base station while moving, causing handover. These two reasons lead to many PHS system switching, and the call quality can only...

AI Technical Summary

Problems solved by technology

[0005] The existing algorithm does not specifically classify the reasons for switching in the PHS system, and it is easy to cause problems such as long switching time and dropped calls. Large, and in some cases, it will cause signal fluctuations to increase (such as building occlusion during movement, fast movement, etc.), resulting in rapid deterioration of reception performance

According to the PHS air interface protocol, the FER detection takes 1.2 seconds as a unit, and the detection time is relatively long, so fast switching cannot be performed, resulting in long switching time, reduced call quality, and even call drop

2) There is no distinction between continuous small bit errors and sudden large bit errors, and different processing is done for different situations of FER detection to speed up the switching speed

3) When the mobile phone initiates TCH switching, it does not comprehensively judge the uplink information of the base station, and the judgment information is not comprehensive; there is no control over the frequency of TCH switching

It may cause the mobile phone to perform TCH switching continuously under one base station in a short period of time, resulting in very short call time and low call quality

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