Judging method of trigger isosystem network switching

Abstract

The invention discloses a detemining method of triggering different- system network switching, comprising the steps of: A) multimode terminal measures pilot strength of the current cell in the current network and determining whether the measured pilot strength is lower than switching removal threshold T_DROP: if yes, returning to the step A; otherwise deleting the current cell from an activation set and executing step B; B) the multimode terminal determines whether the activation set and a candidate set are empty: if yes, executing step C; if both of them are not empty, returning to the step A; C) triggering different-system network switching. And it can accurately determine whether the terminal is on the network edge: if yes, it can in time trigger different-system switching.

Description

technical field [0001] The invention relates to handover technology in wireless communication, in particular to a judgment method for triggering heterogeneous network handover. Background technique [0002] Currently, there are networks of multiple standards for the same coverage area. The network coverage of different standards can be the same or different. Some networks have full coverage, while others have hotspot coverage. A multi-mode terminal can work under one or more than one standard network. For example, the dual-mode terminal (MS / AT) of the CDMA20001X system and the High Speed ​​Packet Data Network (HRPD) system can work in both the CDMA20001X network and the HRPD system. [0003] In the existing technology, the network broadcasts whether there is network coverage of other standards in its coverage area by means of instructions. If there is, the terminal needs to cooperate with two or more networks; if not, the terminal only operates in the current standard. se...

AI Technical Summary

Problems solved by technology

[0006] In the prior art, when a multi-mode terminal works in a multi-standard network, the simple indication of whether there is network coverage of other standards cannot be used as a judgment condition for whether the terminal switches to a different network

On the other hand, the simple indication of whether there is network coverage of other standards cannot tell whether the terminal is already at the edge of the current network, so it cannot trigger the handover of a different network

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