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Method for measuring TD-SCDMA network by GSM/TD-SCDMA double-mode terminal with GSM mode

A TD-SCDMA, dual-mode terminal technology, applied in the field of TD-SCDMA network measurement, can solve the problem that dual-mode terminals cannot be switched in time

Active Publication Date: 2009-04-15
ST ERICSSON SEMICON BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the prior art is that, in the GSM business state, since the TD-SCDMA network is not measured, and if the quality of the TD-SCDMA network is better than that of the GSM network at this time, the dual-mode terminal cannot switch to the TD-SCDMA mode in time

Method used

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  • Method for measuring TD-SCDMA network by GSM/TD-SCDMA double-mode terminal with GSM mode
  • Method for measuring TD-SCDMA network by GSM/TD-SCDMA double-mode terminal with GSM mode
  • Method for measuring TD-SCDMA network by GSM/TD-SCDMA double-mode terminal with GSM mode

Examples

Experimental program
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Effect test

Embodiment 1

[0042] refer to image 3 , the GSM / TD-SCDMA dual-mode terminal work of the embodiment of the present invention measures the method for TD-SCDMA network under GSM mode, comprises the steps:

[0043] Step 301: receiving and storing TD-SCDMA data in the idle state of GSM, and in the idle frame in the GSM business state and the last time slot of the previous frame of the idle frame;

[0044] When the terminal works in the GSM mode and needs to measure a cell in the TD-SCDMA system, the terminal will receive a measurement message, which includes the information of the frequency point to be measured, or the information of the frequency point and the cell to be measured. During the idle period of GSM, the terminal switches the receiving antenna to the TD-SCDMA frequency point to be tested, receives data of a TD-SCDMA system subframe length, and stores it in the storage unit of the terminal. Of course, if GSM is in the idle state, in one measurement period, the measurement of multipl...

Embodiment 2

[0059] The difference from Embodiment 1 is that after the synchronization is successful, it is also determined whether the RSCP measurement needs to be performed by judging whether the receiving gain currently used is accurate. In this way, the measurement efficiency and accuracy are further improved.

[0060] refer to Figure 4 , the GSM / TD-SCDMA dual-mode terminal work of the embodiment of the present invention measures the method for TD-SCDMA network under GSM mode, comprises the steps:

[0061] Step 401: receiving and storing TD-SCDMA data in the idle state of GSM, and in the idle frame in the GSM service state and the last time slot of the previous frame of the idle frame;

[0062] Step 402: Perform synchronization detection according to the stored TD-SCDMA data to obtain the position of the downlink pilot time slot (DwPTS) and the downlink synchronization code (SYNC-DL);

[0063] Steps 403-404: determine whether the synchronization detection is successful, if so, enter...

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Abstract

The invention provides a method for a GSM / TD-SCDMA double-mode terminal working under a GSM mode to measure a TD-SCDMA network. The method comprises the steps as follows: A. under the idle state of GSM and under the service state of GSM, an idle frame and a latest time slot of a frame before the idle frame receive and store TD-SCDMA data; and B. the measurement on received signal strength instruction (RSSI) and received signal code power (RSCP) is carried out according to the stored TD-SCDMA data. The invention can measure the TD-SCDMA network, no matter GSM is under the service state or under the idle state, and therefore, when a TD-SCDMA network signal is stronger, the TD-SCDMA network is automatically switched to the TD-SCDMA mode.

Description

technical field [0001] The invention belongs to the communication field, and in particular relates to a method for measuring a TD-SCDMA network by a GSM / TD-SCDMA dual-mode terminal working in the GSM mode. Background technique [0002] Under the condition that multiple mobile communication networks coexist, it is very important for a terminal to support automatic dual-mode or multi-mode. [0003] GSM / TD-SCDMA (Global System for Mobile Communications / Time Division Synchronous Code Division Multiple Access) automatic dual-mode terminal refers to a terminal that supports both GSM and TD-SCDMA network modes at the same time, and it can automatically operate according to the environment and business needs. If there is no choice, which network can provide better service and service quality, it will automatically switch or reselect to that network mode. In order to realize automatic switching and cell reselection between dual modes, it is an important guarantee for the terminal to...

Claims

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Application Information

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IPC IPC(8): H04W36/14H04W36/30H04W24/08
Inventor 马静
Owner ST ERICSSON SEMICON BEIJING
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