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Network selecting method for TD-SCDMA and GSM double-mode mobile telephone

A TD-SCDMA and dual-mode mobile phone technology, applied in the field of wireless communication terminals, can solve the problems of TD-SCDMA and GSM dual-mode mobile phones with poor use effect and physical interference, so as to reduce mutual interference and improve the use effect

Inactive Publication Date: 2009-12-16
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the working frequency band of the GSM network includes 1800MHz, although TD-SCDMA and GSM dual-mode mobile phones have the above-mentioned advantages, but because the working frequency band of TD-SCDMA is very close to the frequency band of DCS1800, it will physically interfere. When the GSM module When it is in DCS1800, the TD-SCDMA and GSM dual-mode mobile phone will not work well

Method used

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  • Network selecting method for TD-SCDMA and GSM double-mode mobile telephone
  • Network selecting method for TD-SCDMA and GSM double-mode mobile telephone

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Embodiment Construction

[0030] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] TD-SCDMA and GSM dual-mode mobile phone includes TD-SCDMA module and GSM module at the same time.

[0032] refer to figure 1 As shown, the network selection method of TD-SCDMA and GSM dual-mode mobile phone specifically includes the following steps:

[0033] 1. When it is necessary to select a network, search for a 900MHz frequency band network or a 1800MHz frequency band network that meets the communication requirements.

[0034] Step S101: When starting up or switching modes, the GSM module starts up and starts searching for a GSM network that meets the requirements.

[0035] Step S102: Search for a 900MHz frequency band network.

[0036] 2. When there is a 900MHz frequency band network that meets the communication requirements, use the 900MHz frequency band network as the working network of the dual-mode mobile phone; otherwise, co...

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Abstract

The invention discloses a network selection method for a TD-SCDMA and GSM dual-mode mobile phone. The steps are as follows: when a network needs to be selected, search for a 900MHz frequency band network or a 1800MHz frequency band network that meets the communication requirements; when there is a 900MHz frequency band network that meets the communication requirements , the 900MHz frequency band network is used as the working network of the dual-mode mobile phone; when the 1800MHz network is selected as the working network segment, the timer is started, and the timer searches for the 900MHz network that meets the communication requirements regularly when the GSM works on the 1800MHz network. The technical scheme of the invention avoids the simultaneous operation of DCS1800 and TD-SCDMA, thereby effectively reducing mutual interference between different network signals and improving the use effect of TD-SCDMA and GSM dual-mode dual-standby mobile phones.

Description

technical field [0001] The invention relates to a wireless communication terminal technology, in particular to a network selection method for a TD-SCDMA and GSM dual-mode mobile phone. Background technique [0002] With the gradual commercialization of TD-SCDMA (TD-SCDMA, Time Division-Synchronous Code Division Multiple Access), the TD-SCDMA network has to face the problem of insufficient network coverage in the initial stage of construction. If this practical problem cannot be solved, it will Greatly affect the development of TD-SCDMA users, and then affect the development of TD-SCDMA in China and the world. To solve this problem, the best solution at present is nothing more than using other networks to supplement the TD-SCDMA network. The GSM network just meets the above conditions, and the corresponding TD-SCDMA and GSM dual-mode dual-standby mobile phones are required on the terminal. To meet the needs of TD-SCDMA and GSM networks. [0003] The working frequency band o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q7/32H04Q7/38H04Q7/36H04W48/18H04W88/06
Inventor 杨起丁克忠马爱芬
Owner ZTE CORP