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Mobile terminal and different system cell reselection method thereof

A mobile terminal and heterogeneous system technology, applied in the field of communication, can solve the problems of affecting user services and automatic switching of cells, and achieve the effects of ensuring continuity, rapid implementation and deployment, and good user experience

Active Publication Date: 2014-07-09
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current technology cannot realize the automatic switching of cells between different systems between networks without neighbor cell relations. Even if automatic switching is possible, it is necessary to wait until the coverage of the original network is lost before searching for cells of another network. At this time, the mobile terminal will There is a short-term network disconnection phenomenon, which affects user business

Method used

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  • Mobile terminal and different system cell reselection method thereof
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  • Mobile terminal and different system cell reselection method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] The technical solution of the present invention will be described in detail below by taking the TD-SCDMA (hereinafter referred to as TD) network in TDD mode as the first network and the WCDMA (W for short in below) network as the second network in FDD mode as examples. In most cases, the TD-SCDMA network and the WCDMA network do not have a neighbor relationship, but there may be a contract relationship between the operators for user roaming. Therefore, a dual-mode terminal supporting TD-SCDMA / WCDMA needs to implement TD- Smooth reselection between SCDMA and WCDMA networks to ensure user services. like figure 2 As shown, it is a schematic flowchart of a method for reselecting cells of different systems according to Embodiment 1 of the present invention, including:

[0062] Step S21: When the received signal power of the serving cell of the TD network is lower than the first threshold, start a periodic signal search for the cell of the W network to acquire the received ...

Embodiment 2

[0082] In practical applications, the network environment will be more complicated than that described in the first embodiment of the present invention, that is, for the first network, there are both the second network without neighbor relationship and the first network with neighbor relationship. Three networks. At this time, the reselection of different systems must consider both the second network and the third network, so as to ensure the selection of the optimal network for the user to the greatest extent. In the following, the first network is a TD network, the second network is a W network, and the third network is a GSM (hereinafter referred to as G) network as an example to describe in detail. like image 3 Shown is a schematic flowchart of a method for reselecting cells of different systems according to Embodiment 2 of the present invention, including:

[0083] Step S31: When the received signal power of the serving cell of the TD network is lower than the first th...

Embodiment 3

[0102] Corresponding to the method for reselecting cells of different systems in the first embodiment above, the mobile terminal in this embodiment is as follows: Figure 4 shown, including:

[0103] The access layer management module 41 of the first network is configured to acquire the received signal power of the serving cell of the first network;

[0104] The access layer management module 42 of the second network is configured to perform a periodic signal search on the cells of the second network after receiving the activation notification, so as to obtain the received signal power of the cells of the second network, and the first The network is different from the second network and has no neighbor relationship, and is also used for residing in the target cell of the second network after the cell reselection from the first network to the second network is completed;

[0105] A wireless access control module 43, configured to send the start notification when the received s...

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Abstract

The invention discloses a mobile terminal and a different system cell reselection method thereof. The different system cell reselection method comprises: when the receiving signal power of a service cell of a first network is smaller than a first threshold, starting periodical signal search for a cell of a second network to obtain the receiving signal power of the cell of the second network, the first network and the second network being different and having no neighborhood relations; and when a mobile terminal satisfies a first reselection condition, starting cell reselection from the first network to the second network, the first reselection condition comprising that the receiving signal power of the cell of the second network is higher than the receiving signal power of the service cell of the first network and a difference is greater than or equal to a first preset value. By using the technical scheme provided by the invention, smooth cell reselection between two networks which do not have neighborhood configuration relations can be realized, and network disconnection is not generated. The technical scheme does not relate to modification of a mobile terminal air interface protocol and realization of a network side, and rapid disposition and realization are facilitated.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for reselecting a mobile terminal and a cell of a different system. Background technique [0002] With the rapid development of mobile communication technology, the network coverage is more complex and diverse, such as the second generation communication technology (2G, 2nd Generation) network and the third generation communication technology (3G, 3rd Generation) network, and the long-term evolution communication technology (LTE, Long Term Evolution) network. In order to enable users to enjoy the convenience brought by mobile technology anytime and anywhere, a multi-mode mobile terminal supporting multiple network modes has become the mainstream of development. Such as 2G / 3G multi-mode mobile terminal, the user can switch to the 2G network to ensure basic calls when the 3G network coverage does not meet the requirements, or switch from the 2G network to the 3G network when the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/14H04W88/06
Inventor 金逸高喜春陈贤亮
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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