Judging method of trigger isosystem network switching

A network switching, network technology, applied in the direction of electrical components, radio/induction link selection arrangement, selection device, etc., can solve the problem of not being able to tell the terminal, not triggering a heterogeneous network, and not being able to switch to a heterogeneous network as a terminal.

Inactive Publication Date: 2007-04-18
HUAWEI TECH CO LTD
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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 dif

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  • Judging method of trigger isosystem network switching

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, specific examples are given below to further describe the present invention in detail.

[0022] Take the coexistence of CDMA20001X network and HRPD network as an example, among them, the CDMA20001X network is the whole network coverage, and the HRPD network is the hotspot coverage. Dual-mode terminal MS / AT can work in both CDMA20001X network and HRPD network.

[0023] Assume that the dual-mode terminal MS / AT is currently in the HRPD network, and the HRPD network provides packet service for the MS / AT. When the dual-mode terminal MS / AT moves to the coverage edge of the HRPD network during the service process, or moves at the junction of the HRPD network cells, the pilot strength of the current cell decreases, and the present invention determines whether to switch to the CDMA20001X network by judging, as shown in Figure 1 The flow shown is described in detail as follows:

[0...

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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...

Claims

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Application Information

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IPC IPC(8): H04Q7/38H04W36/14H04W36/30H04W88/06
Inventor 谭莹
Owner HUAWEI TECH CO LTD
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