Single card terminal and network reselection method

A terminal, 3G network technology, applied in the field of communications, can solve problems such as affecting user experience, inability to proceed, and increasing the time when services are out of reach, and achieve the effect of improving user experience and speeding up reselection.

Inactive Publication Date: 2011-07-20
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] When the existing single-card dual-mode terminal reselects from one network to another, there will be a period of time when the service is unavailable, that is, the service will be interrupted during this period, whether it is a CS domain service or a PS domain. no business
At the sa

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  • Single card terminal and network reselection method

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0036] Embodiment 1 of the present invention provides a terminal, which is also called "single-card dual-standby terminal", that is, based on a SIM card, and supports resident 2G network and 3G network at the same time, where the 2G network can be a GSM network, 3G network can be TD-SCDMA, WCDMA and other networks.

[0037] see figure 2 , is a schematic structural diagram of an embodiment of the present invention, and figure 1 The difference between the single-card dual-mode terminal in the prior art shown is that, in the embodiment of the present invention, two independent processing modules are included, 2G processing module 21 and 3G processing module 22, for processing 2G services and 3G services respectively. Specifically, see image 3 , is a schematic structural diagram of a 2G processing module and a 3G processing module, wherein the 2G processing module includes a 2G protocol stack processing module 211, a 2G physical layer processing module 212, a 2G radio frequenc...

Embodiment 2

[0049] The embodiment of the present invention is based on the first embodiment above to further describe the solution of the present invention.

[0050] In the embodiment of the present invention, "residing in the CS domain on the 2G network" can be understood as: the terminal initiates a LAU (Location Area Update, Location Area Update) process to attach to the 2G network; at the same time, "residing on the PS domain on the 3G network" It can be understood as: the terminal initiates GPRS attach or RAU (Route Area Update, routing area update) to attach to the 3G network. Those skilled in the art can implement the camping of the CS domain on the 2G network or the camping of the PS domain on the 3G network according to the embodiment of the present invention and the prior art, which will not be repeated here.

[0051] The process of detecting 3G network signals by the 3G processing module in the embodiment of the present invention can refer to the process of detecting 3G network...

Embodiment 3

[0071] The embodiment of the present invention is based on the foregoing embodiments 1 and 2, and the 2G network is a GSM network, and the 3G network is a TD-SCDMA (hereinafter referred to as TD network) as an example for description.

[0072] For convenience of description, in the embodiment of the present invention, the 2G processing module is renamed "GSM processing module"; the 3G processing module is renamed "TD processing module". A specific implementation of the 3G processing module, the GSM processing module has the function of the 2G processing module in the first and second embodiments, and the TD processing module has the function of the 3G processing module in the first and second embodiments.

[0073] The whole process from power-on to re-selection of a terminal is taken as an example to illustrate below.

[0074] 1. Start the terminal

[0075] When the terminal is turned on, the GSM processing module starts to search for a suitable GSM network. Specifically, the...

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Abstract

The embodiment of the invention discloses a single card terminal and a network reselection method. The terminal comprises a 2G processing module and a 3G processing module, wherein the 2G processing module is used for residing a circuit switched (CS) domain in a 2G network preferentially and executing CS domain services; the 3G processing module is used for residing a packet switched (PS) domain in a 3G network preferentially and executing PS domain services; the 3G processing module is also used for detecting 3G network signal intensity; and when the 3G processing module detects that the 3G network signal intensity is not higher than a first threshold and lasts for a first time, the 2G processing module is also used for judging whether the 2G network accords with the PS domain residence condition, if so, the PS domain is resided in the 2G network, and the PS domain services are executed in the 2G network. According to the embodiment of the invention, the PS domain and the CS domain can be resided in different modules respectively, and CS domain services and the PS domain services are given consideration; meanwhile, the network reselection process is accelerated, and the user experience is improved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a single-card terminal and a network reselection method. Background technique [0002] In the field of wireless communication technology, 2G network and 3G network are two widely used networks. Services based on 2G networks and 3G networks mainly include voice services and data services, wherein voice services are carried by the circuit switched domain (CS domain, Circuit Switched Domain), and data services are carried by the packet switched domain (PS domain, Packet Switched Domain). Bearer, both 2G network and 3G network support CS domain service and PS domain service. The aforementioned CS domain or PS domain can be understood as a collection of software and hardware for processing CS domain services (such as voice services) or PS domain services (such as data services). [0003] Compared with 2G network, 3G network is a new network with larger bandwidth and better da...

Claims

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Application Information

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IPC IPC(8): H04W36/14H04W36/30H04W88/02
CPCH04W36/24H04W36/14
Inventor 郑小春曾雪红林家骐杨景军
Owner HUAWEI TECH CO LTD
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