Scanning method, system and terminal

Abstract

A scanning method, system and terminal are provided. The method includes: determining that part of the cell which the terminal belongs to is covered by the target access technology network according to the received coverage indicating information (101); generating a scan determination information according to the coverage value which is about the coverage of the access technology network for the cell and indicated by the coverage indicating information (102); when the scanning time of the target access technology network coming, scanning the target access technology network according to the scan determination information (103). The power waste of the terminal locating at the boundary of the overlap coverage area of two networks is saved by the embodiments of this invention. It can be avoided that the terminal in the cell loses the chance to switch to a better network and gets dropped from the network when moving to a neighbor area that is not covered by the current serving access technology network. The abrupt increase of the network load and the increase of the access delay caused by the simultaneous initiations of handover requests by the terminals in the cell in the overlap coverage area of two networks can be avoided. And the communication quality is advanced.

Description

Technical field [0001] The embodiment of the present invention relates to the field of mobile communication technology, and particularly relates to a scanning method, system and terminal. Background technique [0002] When two networks with different access technologies and different coverage areas exist in the system at the same time, for example, a scenario where the coverage of two networks overlap vertically and a scenario where the coverage of two networks intersect horizontally, there will be an overlapping coverage area of ​​the two networks. The access network equipment can respectively issue the coverage indication information of whether there is another access technology network to all the terminals in the cell according to the coverage of the network of another access technology for each cell under it. The network of another access technology can be scanned according to the received coverage indication information to determine whether it is possible to switch to the ne...

AI Technical Summary

Problems solved by technology

[0003] In the process of implementing the present invention, the inventors found at least the following problems in the prior art: when an access network device issues coverage indication information of a network with another access technology to a cell at the border of an overlapping coverage area, the The scanning of the network of another access technology by the terminal not covered by the network of another access technology in the above-mentioned cell leads to waste of power consumption of the terminal; When the coverage indication information of the network that does not exist another access technology is delivered, the terminal located in the above-mentioned cell that is covered by the network of another access technology does not scan the network of another access technology, which will cause the terminal The opportunity to switch to a better network is lost; when the access network device issues coverage indication information for a network that does not have another access technology to a cell that overlaps the border of the coverage area, and the adjacent area of ​​​​the cell does not Covered by the network of the currently serving access technology, when a terminal located in the above-mentioned cell moves to an adjacent area of ​​the cell, neither the network of the currently serving access technology serves the terminal nor another access technology Scanning the network of another access technology leads to the disconnection of the terminal, which affects the communication quality; because the terminal located in the cell of the overlapping coverage area is based on the received coverage instruction information of the network of another access technology at the same time. When scanning a network with access technology, if the network information scanned by multiple terminals meets the switching conditions, the above multiple terminals will initiate a switching request at the same time, resulting in a sudden increase in network load and an increase in access delay, affecting communication quality

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