Position updating method and system

Abstract

A location updating method is provided, the current location area id information is stored in the terminal, the method comprises: the terminal judges if the cell to be selected of the terminal is in the current location area when it carries out the cell reselection, the location updating will not be carried out if it is, otherwise, the location area including the cell to be selected and the current resident cell will be the object location area and the location updating will be carried out. After carrying out the location updating by using the method of the embodiment of the present invention, even if the terminal at the border of the location area carries out cell reselection again and again in small range, the location updating will not be high frequency, thus it can freely select the most fit resident area to stay, and the terminal access capability is ensured.; A location updating system, a location area allocating method, a cell broadcasting location area method and a calling method are also provided in the embodiment of the present invention.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a location updating method and system. Background technique [0002] In the communication system, there will be countless cells, which are the basic units of the mobile communication network. Each cell corresponds to a base station. A base station is generally configured with one or more cells. Each cell is responsible for the call task in the cell. . There are usually two ways for a call center to call a called party: if the call center knows where the called party is, then paging directly at the called party’s position; To call to the called party, it is necessary to perform network-wide paging. [0003] Specifically, in the GSM communication system, there are many cells under one switch. When the mobile switching center (MSC) wants to call a terminal, if the MSC knows the cell where the terminal is currently located, it will directly paging in the cell where the...

AI Technical Summary

Problems solved by technology

[0008] However, for the above location update method, there are the following problems: when the location areas are divided, they are closely connected but do not overlap each other, such as figure 1 As shown, the location area L1 and the location area L2, so the terminal at the junction of the two location areas will frequently update the location area when the terminal frequently reselects cells due to the back and forth movement of the location or the fluctuation of the radio signal. Thus triggering a large number of location area update messages, that is, location update messages

[0010] 1. The terminal at the boundary of the location area cannot freely choose the cell that is most suitable for camping, especially when the signal of each cell at the junction is not good, the terminal cannot freely select the cell with the best signal, which will make it difficult for mobile The user paging success rate and the connection rate of the terminal decrease, which in turn affects the quality of the network and wastes air interface resources. In today's increasingly tense air interface resources, this waste of air interface resources is extremely unwise

[0011] 2. Even if the threshold is set to limit the frequent location update of terminals at the junction of location areas, for densely populated urban areas, when the cell radius is small, terminals at the junction of location areas can still easily cross the cell, so that It is easy for the terminal to meet the above threshold and cause location updates to occur

Images