Method and device for searching and measuring closed subscriber group cell

Abstract

The embodiment of the invention discloses a method and a device for searching and measuring a closed subscriber group cell, relates to the technical field of communication, and aims to solve the problem of the prior art that, a terminal takes a lot of time to perform cell reselection or switch to a suitable public class CSG cell. The method for searching and measuring the closed subscriber group cell provided by the embodiment of the invention comprises the steps of acquiring physical layer cell identification group information of the closed subscriber group cell, wherein the physical layer cell identification group information of the closed subscriber group cell is divided according to different service characteristics; and searching and measuring the closed subscriber group cell by the terminal according to the physical layer cell identification group information of the closed subscriber group cell.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to the search and measurement technology of closed subscriber group cells. Background technique [0002] CSG (Closed Subscriber Group, Closed Subscriber Group) is a small network covering a limited area and serving a specific group of users, so it is called a closed subscriber group. Only users belonging to the group can access this kind of network, and users outside the group are not allowed to access. At the same time, there is another type of CSG that can serve all users, such as CSGs in airports, stations, etc., which only cover a small area, but allow all users in this location to access. [0003] At present, when there is no connection between the terminal and the network, the network calls the terminal through paging. If the terminal moves between different cells, the network realizes the connection to the terminal through cell reselection. When the terminal is conn...

AI Technical Summary

Problems solved by technology

[0005] In the process of implementing the present invention, the inventors found that there are at least the following problems in the prior art: when establishing a connection between the terminal and the network or performing cell reselection or handover, the existing positioning technology is used to detect and locate the surrounding cells one by one , by reading the system messages of the surrounding CSG cells to further search for CSG cells suitable for terminal access, for example, in public places such as airports, if there are both public CSG cells at the airport and private CSGs used by airport staff or nearby residents Although passengers waiting at the airport are only allowed to access public CSG cells, they have to search and measure other nearby private CSG cells

In this way, it takes a long time for the terminal to perform cell reselection or switch to a suitable CSG cell

Moreover, in the process of searching for a suitable CSG cell, the terminal needs to continuously read the system information of other CSG cells, which increases the power consumption of the terminal

[0006] At the same time, since the frequency of reading system information in the connected state is very low, once a suitable cell is found, it must immediately report the measurement and start switching, so that the terminal is not easy to switch to the cell with the best signal, but only It can be the first suitable cell found. Since the cells under the same frequency in UMTS and LTE systems will interfere with each other, this approach is obviously inappropriate.

Images