Cell relay switching method and device

Abstract

The invention provides a cell relay switching method and device. The method includes the steps that whether a terminal is in a high-speed moving state or not is judged according to a measurement report reported by the terminal, and if yes, a high-speed radio resource is distributed to the terminal, wherein the high-speed radio resource is a physical channel resource distributed to the high-speed moving terminal; a switching target cell is determined according to the measurement report reported by the terminal, and the target cell is indicated to start the high-speed radio resource and monitor signals of the high-speed radio resource; whether the error rate of the target cell on the high-speed radio resource is lower than a preset error rate or not is judged according to the measurement report, if the error rate of the target cell on the high-speed radio resource is lower than the preset error rate, a wireless link of a current cell is released, and the terminal is switched into the target cell. All cells in the switching process are controlled to distribute high-speed radio resources for terminals in a high-speed moving state, so that the terminals can always run on the same physical channel resource, and therefore relay switching between the cells is achieved.

Description

technical field [0001] The invention relates to cell handover technology in a communication network, in particular to a cell relay handover method and device. Background technique [0002] In the Global System of Mobile communication (GSM for short) network, when a terminal moves from one cell to another, cell handover is required, and at the border of the cell, the signal that the terminal can receive is weak, and it is easy to A signaling loss has occurred. [0003] The cell handover technologies in the prior art are divided into hard handover, soft handover and relay handover. Among them, hard handover refers to switching the communication channel of the terminal from one wireless channel to another wireless channel under the premise of ensuring uninterrupted communication in the process of mobile communication. In the process of changing the wireless channel, it is easy to drop calls, etc. Condition. Soft handover refers to channel switching between cells when the car...

AI Technical Summary

Problems solved by technology

In the suburban environment, the coverage distance of each cell is about 1000-2000 meters. As the speed of the high-speed train becomes faster and faster, the time for the terminal to pass through a single cell is getting shorter and shorter, and the switching time during the call is getting shorter and shorter. According to the vehicle speed of 350 km / h, the terminal will pass through a cell in about 10-20 seconds, and the handover judgment (or handover preparation) of the terminal takes about 7-9 seconds. There are handover judgments in the three handover methods of the prior art The lag problem will cause the terminal to fail to switch to the ideal cell, resulting in poor call quality or call drop

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