Switching method and device of serving cell of mobile terminal

Abstract

The invention discloses a switching method and a device of a serving cell of a mobile terminal. The method comprises the following steps: determining the number of the switched serving cells in the set time interval closest to the current time by the mobile terminal; lowering the switching threshold of the mobile terminal to be less than the set switching threshold when the determined quantity isgreater than the set quantity threshold value; and switching the serving cell of the mobile terminal to the adjacent cell when the detected switching index of the cell adjacent to the current servingcell of the mobile terminal reaches the switching threshold of the mobile terminal. The adoption of the method and the device provided in the invention reduces switching dropping rate of the serving cell when the mobile terminal is in high-speed motion.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and device for switching a serving cell of a mobile terminal. Background technique [0002] Like most wireless protocols, the IEEE 802.16 protocol defines the handover of the serving cell of the mobile terminal. The purpose is to ensure the continuity of the service of the mobile terminal during the mobile process and improve the user experience. [0003] The 802.16e standard specifies a mandatory handover mode, referred to as HO (handover), which is actually what is commonly referred to as a hard handover. In addition, it also provides two optional switching modes: MDHO (Macro Diversity Switching) and FBSS (Fast BS Switching). It is stipulated in WiMAX16e that the mobile terminal must support hard handover. [0004] The mobile terminal obtains the information of the adjacent cell through the message broadcast by the current serving base station,...

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Problems solved by technology

[0012] and for figure 2 In the same situation, the mobile terminal also detects and initiates handover at point I after entering the handover area. Since the speed of the mobile terminal is very fast at this time, the handover can only be completed when it reaches point IV. In the process from point III to point IV, only The coverage of base station B, the handover process has not been completed, it may cause the network connection of the terminal to fail, that is, to drop the line

[0013] Appear figure 2 The situation is generally due to the mobile terminal moving too fast. In today's social environment, the traffic environment is getting better and better. Under high-speed conditions such as highways and maglev trains, mobile terminals are prone to similar dropped calls.

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