Method for updating switching parameters in the process of soft switching of terminal among access networks

Abstract

The invention discloses a method for updating switching parameters in the process of soft switching of a terminal among access networks, which comprises the following steps: the access terminal notifies a source access network of a target cell in a target access network required to be switched to; and the source access network acquires the switching parameters of the target cell from the target access network, and updates the switching parameters of the access terminal according to the acquired switching parameters of the target cell. The method of the invention avoids the problems of dropped call, low network performance, switching failure and the like caused by that the switching parameters do not meet the actual wireless conditions when the terminal is in a switching area, increases the success rate of the soft switching of the access terminal, reduces the conditions of dropped call, and enhances the user experience.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a handover parameter update method when a terminal performs soft handover between access networks. Background technique [0002] In a wireless communication system, network coverage is undertaken by wireless access points distributed everywhere. Take the Code Division Multiple Access mobile communication CDMA (Code Division Multiple Access) system as an example. The wireless access point is a base station. A base station may have multiple cells. Each cell uses different handover parameters according to network planning or network optimization configuration. . [0003] In one connection of an AT (Access Terminal), multiple cells are allowed to interact with the terminal at the same time, so that the call quality and data transmission quality can be improved through the diversity combination of multiple cells. As the access terminal moves, the cell that interacts with the ac...

AI Technical Summary

Problems solved by technology

[0004] In the current interface specifications, such as CDMA 1x EV-DO, that is, Code Division Multiple Access Enhanced Data Mobile Communication Protocol, the Attribute override (attribute coverage) process is defined, so that the access network and the access terminal (the access terminal only stores one set of Handover parameters) In the connected state, update the handover parameters through the method defined in this process; but limited to the definition of the interface, when the terminal performs soft handover between access networks, the source-side access network does not know that the target-side access The handover parameters configured by each cell under each base station of the network, and the handover parameters of the cell are inevitably inconsistent with the parameters used by the access terminal during soft handover between access networks, which makes the terminal prone to handover in the handover area Failure, network performance degradation, call drop, etc., which directly affect the user experience

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