CSG subdistrict search method and device

Abstract

The invention relates to the field of mobile communication, and provides a CSG (Content Service Gateway) search method, which is used when existing information of a terminal changes or a user requests to search a CSG subdistrict. The search method comprises the following steps: the terminal performs frequency sweeping within own capacity, and finds out the specific CSG subdistrict in each frequency point; the system information SIB1 of the CSG subdistrict is read, and the public land mobile network PLMN and CSGID information of the subdistrict is acquired; and if the PLMN and the CSGID information is in a CSG white list of the terminal, the information of the CSG subdistrict is recorded in the CSG subdistrict staying history. The invention further provides a CSG search device and a judge method for reelecting subdistrict in an idle state. By adopting the technical scheme provided by the invention, the terminal can meet the requirement on electricity conservation, enlarges the subdistrict measurement range, and realizes the reelecting and switch of the subdistrict.

Description

technical field [0001] The present invention relates to mobile communication technology, in particular to a CSG (Closed Subscriber Group, Closed Subscriber Group) cell search method and device. Background technique [0002] In the LTE system, cells can be divided into normal cells (also referred to as non-CSG cells) and CSG cells. The CSG cell is part of the PLMN (Public Land Mobile Network, public land mobile (communication) network), and is served by HNB / HeNB (Home NodeB / Home eNodeB, Home Node B / Home Evolved Node B), compared with ordinary cells , CSG cells generally have the advantages of cheap billing, flexible and optional services, higher download rates, and more stable signals, but the residency is limited. Only when the ID of the cell matches can the cell reside successfully. There may be one or more CSG IDs stored in the user card, and the collection of these CSG IDs is called "CSG white list". [0003] According to 3GPP TS 36.304 and 36.331, as long as the termi...

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is to provide a CSG cell search method to solve the problem that the common reselection process is not applicable to the cell reselection with CSG cells, and at the same time increase the number of measurements in the idle state and improve the accuracy of the existing resident history. CSG cell reselection is possible, and at the same time search for new CSG cells under possible conditions; in the connected state, while ensuring the quality of service, it provides the function of switching the terminal to some CSG cells

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