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Network selection method and terminal equipment

A technology for terminal equipment and network selection, applied in the field of communication, it can solve the problems of dropped calls and voice quality degradation, the terminal cannot make calls, and affects the user experience of voice services, and achieves the effect of improving user experience.

Inactive Publication Date: 2011-02-16
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] During the process of 2G and 3G network selection, due to the simultaneous switching of the CS domain and PS, the terminal cannot make a call. At the same time, switching between 2G and 3G during the call will easily lead to call drop and voice quality degradation, affecting the User Experience of Voice Services

Method used

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  • Network selection method and terminal equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Embodiment 1 of the present invention provides a network selection method, which is applied to a terminal device based on a Subscriber Identity Module SIM (Subscriber Identity Module, Subscriber Identity Module) card, and the SIM card is used to store the user and the first network and the second network. For network-related information, the first network has a lower data transfer rate than said second network, but in most cases the communication quality is better; see figure 1 , the method includes the following steps:

[0033] S11. Prioritize residing in the circuit-switched CS domain on the first network, and preferentially carry CS domain services through the first network;

[0034] S12. Prioritize residing in the packet-switched PS domain on the second network, and preferentially carry PS domain services through the second network;

[0035] S13. When the communication quality of the second network does not meet the PS domain service requirement, camp the PS domain...

Embodiment 2

[0051] Based on Embodiment 1, this embodiment of the present invention provides a terminal device, see figure 2 , the terminal device in the embodiment of the present invention includes a Subscriber Identity Module (SIM) card, the SIM card is used to store information related to the first network and the second network of the user, the data transmission rate of the first network is lower than that of the second network, But in most cases the communication quality is better. For specific descriptions of the first network and the second network, reference may be made to the relevant part of the description in Embodiment 1, which will not be repeated here.

[0052] The first network processing module is configured to preferentially reside in the CS domain on the first network, and preferentially carry CS domain services through the first network;

[0053] The second network processing module is configured to preferentially reside in the PS domain on the second network, and pref...

Embodiment 3

[0065] The embodiment of the present invention is based on the foregoing embodiments, and the solution is specifically described by taking the first network as a 2G network and the second network as a 3G network.

[0066] see image 3 , is a schematic diagram of an embodiment of the present invention, the left side of the figure is a terminal device (such as a mobile phone), the terminal includes a 3G module, a 2G module, a SIM card (or a USIM card, which can be adjusted according to actual conditions) and other related modules . Among them, the 2G module is preferentially used to complete services related to the CS domain, and the 3G module is preferentially used to complete services related to the PS domain. When the 2G or 3G module performs related services, it also needs to interact with some network elements, such as completing the PS domain routing area update process with UTRAN, SGSN / GGSM, and HLR, and completing the CS domain location area update with GERAN, MSC, and ...

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Abstract

The embodiment of the invention discloses a network selection method, which is applied to user identification module SIM card-based terminal equipment, wherein the SIM card is used for storing related information among a user, a first network and a second network, and the first network has low data transmission rate compared with the second network but has good communication quality under most conditions. The method comprises the following steps of: preferentially lingering a CS (circuit switching) domain in the first network, and preferentially loading CS domain service through the first network; preferentially lingering a PS (packet switching) domain in the second network, and preferentially loading PS domain service through the second network; and when the communication quality of the second network does not meet the requirement of the PS domain service, lingering the PS domain to the first network, and loading the PS domain service through the first network. The method can avoid call drop and voice quality decline in a call process at the same time of ensuring high-speed data transmission, and improves the user experience of the voice service.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a network selection method and terminal equipment. Background technique [0002] With the development of communication technology, high-speed data transmission communication networks such as 3G, LTE (Long Term Evolution, long-term evolution), WLAN (Wireless Local Area Networks, wireless local area network) are being more and more widely used. These networks are characterized by being able to provide high-speed data services, and at the same time, some also support CS domain voice services (such as 3G technology). At present, in mobile communication networks, voice services are generally implemented based on Circuit Switch (Circuit Switch) technology, and the collection of software and hardware related to these technologies is called Circuit Switched Domain (CS domain, Circuit Switched Domain); data services are generally based on packet switching (Packet Switch) t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W88/06H04W48/18H04W48/06
CPCH04W36/26H04W48/18H04W36/0022H04W88/06
Inventor 李吉林周国安郑小春张晓鹏
Owner HUAWEI TECH CO LTD
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