Switch control method of dual-mode terminal between different systems under dual idle state

A dual-mode terminal and control method technology, applied in the field of wireless communication, can solve the problems of simultaneous detection of signal quality of 2G adjacent cells, which cannot be done, and achieve high practical value, simple implementation, and rapid development

Inactive Publication Date: 2008-09-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the early stage of TD-SCDMA network operation, there will be a considerable number of dual-mode terminals of TD-SCDMA and mature 2G technology. These special dual-mode terminals cannot simultaneously detect the signal quality of 2G adjacent cells in the TD-SCDMA system being used. capability, and cannot complete inter-system switching through the inter-system relocation process stipulated in the protocol

Method used

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  • Switch control method of dual-mode terminal between different systems under dual idle state
  • Switch control method of dual-mode terminal between different systems under dual idle state
  • Switch control method of dual-mode terminal between different systems under dual idle state

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0039] The handover control method when both the serving cell and the TD-SCDMA neighbor cell become worse, such as figure 2 shown, including the following steps:

[0040] Step 201, the dual-mode terminal is in a connected state in a certain cell in the TD-SCDMA network, and the services carried by the current 3G network can run in the target 2G network;

[0041] Step 202, the RNC commands the terminal to perform in-network measurement (intra-frequency and inter-frequency measurement) by the measurement control message, and measures the signal quality of the serving cell and the TD-SCDMA neighboring cell;

[0042] The purpose of measuring in-network is to judge whether it is necessary to switch to TD-SCDMA network.

[0043] Step 203, the terminal measures the serving cell and the TD-SCDMA neighboring cell according to the measurement control message, and returns a measurement report to the radio network controller after the measurement is completed;

[0044] Step 204, RNC ju...

no. 2 example

[0048] Handover control method when the serving cell is overloaded, such as image 3 shown, including the following steps:

[0049] Step 301, the dual-mode terminal is in a connected state in a certain cell in the TD-SCDMA network, and the services carried by the current 3G network can run in the target 2G network;

[0050] Step 302, the RNC starts a load evaluation algorithm, and evaluates the load situation of the serving cell according to various indicators of system operation;

[0051] Step 303, judging whether the load of the serving cell is overloaded according to the load evaluation result, if yes, execute step 304, otherwise execute step 305;

[0052] Step 304, judging whether the TD-SCDMA neighbor cell and the TD-SCDMA cell with the same coverage are all overloaded, if yes, execute step 306, otherwise execute step 305;

[0053] The purpose of evaluating the loads of the three types of cells is to judge whether it is necessary to switch to the TD-SCDMA network.

[0...

no. 3 example

[0057] Handover control method when a dual-mode terminal enters a TD-SCDMA edge cell, such as Figure 4 shown, including the following steps:

[0058] Step 401, the dual-mode terminal is in a connected state in a certain cell in the TD-SCDMA network, and the services carried by the current 3G network can run in the target 2G network;

[0059] Step 402, the RNC reads the system configuration information, if the serving cell is configured as "switching to the 2G system upon entering the cell", then execute step 404, otherwise execute step 403;

[0060] That is to say, treat the edge cell of TD-SCDMA as a transition zone for 2G and 3G switching, and switch as long as it enters the cell.

[0061] Step 403, the judgment result is that the dual-mode terminal does not switch to the 2G network;

[0062] Step 404, the judgment result is that the dual-mode terminal switches to the 2G network.

[0063] Figure 4 The handover control method is very practical for TD-SCDMA network in th...

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Abstract

The invention relates to a switching control method for switching between heterogeneous systems when in the dual standby of a double-mode terminal. Although not any part of the last generation mature network side is required to be modified and the double-mode terminal is not required to have a measurement capability of the heterogeneous system, the switching control among the heterogeneous systems of the terminal can be realized. The double-mode terminal is connected with a first network and a second network and is in dual standby condition of a first network mode or a second network mode. The method comprises the following steps: (a) the terminal is connected with a service and a radio network controller of the first network judges whether the service can be loaded by the second network, if yes, the next step (b) is executed; (b) the radio network controller judges whether the location of the terminal meets switching conditions, if yes, the terminal is triggered to be switched from the first network to the second network.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a control method for switching between different systems when a dual-mode terminal with no different system measurement capability is in dual standby. Background technique [0002] TD-SCDMA is a new network technology, and network construction is a gradual process. Generally, operators who build TD-SCDMA networks often operate relatively mature 2G networks at the same time. According to the current situation of the market and network operation, it is not necessary to build an independent and full-coverage new network in the initial stage of TD-SCDMA network construction, but should consider realizing full-coverage of TD-SCDMA on the basis of the existing 2G network on demand and in stages . Based on this, TD-SCDMA network construction will first consider building a network in dense urban areas, urban areas, airports, key traffic arteries and tourist attractions wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04Q7/32H04Q7/34
Inventor 张春国黄河沙秀斌
Owner ZTE CORP
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