Cell reselection method and device and mobile terminal

Abstract

The invention provides a cell reselection method. The method comprises steps of determining a corresponding relation between a resident CSG (Closed Subscriber Group) cell and a neighbor cell thereof when a mobile terminal is in the CSG cell; determining whether a current resident non-CSG cell is a neighbor cell of the CSG cell according to the corresponding relation between each CSG cell and the neighbor cell thereof when the mobile terminal is in a non-CSG cell; carrying out CSG cell frequency point detection and carrying out CSG cell reselection according to a detection result when the current resident non-CSG cell is the neighbor cell of the CSG cell. The invention also provides a cell reselection device and a mobile terminal.

Description

technical field [0001] The present invention relates to a cell selection technology in mobile communication, in particular to a cell reselection method, device and method for reselecting from a non-CSG cell to a CSG cell when a Closed Subscriber Group (CSG, Closed Subscriber Group) cell and a non-CSG cell are deployed in a mixed manner. mobile terminal. Background technique [0002] In the current mobile communication network system, cells can be divided into macro cells and CSG cells. Among them, macro cells are also called non-CSG cells; The range of wireless coverage, coverage and throughput will be affected by the coverage environment and the number of users in the coverage area. Macro cells mainly provide outdoor coverage, and wireless signals have certain losses when penetrating buildings; CSG cells are public land mobile communications Part of the network (PLMN, Public Land MobileNetwork), served by Home Node B (HNB, Home NodeB) / Home Evolved Node B (HeNB, Home eNodeB...

AI Technical Summary

Problems solved by technology

[0007] The first method is to search the CSG cell regularly after the mobile terminal camps in the macro cell; however, the timing of this method is not easy to grasp, and the time between two searches is too short, which will lead to too frequent searches. Power consumption, the long time between two searches will not be able to enter the CSG cell in time;

[0008] The second method is to modify the protocol to allow the network side to broadcast the CSG cell; however, this method involves modifying the system information interface protocol, such as the 3GPP 36331 protocol; currently it is relatively difficult to promote the 3GPP organization to modify the protocol

Images