Network searching method and mobile terminal after coverage loss

A mobile terminal and coverage loss technology, which is applied in the field of wireless communication, can solve the problems of long search time, no signal coverage, and coverage loss, etc., and achieve the effect of extending standby time and saving power

Inactive Publication Date: 2010-09-08
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the daily use of UE (User Equipment), the coverage loss that occurs most frequently is short-lived, such as entering an elevator, driving into a tunnel, etc., and after getting out of the elevator or tunnel, it is still the same cell; The blind area under the same RPLMN, that is, the area where there is no signal coverage at the junc

Method used

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  • Network searching method and mobile terminal after coverage loss
  • Network searching method and mobile terminal after coverage loss
  • Network searching method and mobile terminal after coverage loss

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[0031] The technical solution of the present invention will be described in more detail below with reference to the drawings and embodiments.

[0032] figure 1 It is a schematic diagram of a mobile terminal according to an embodiment of the present invention. As shown in the figure, the mobile terminal of this embodiment includes a recording unit, a priority scanning frequency determination unit, and a network searching unit.

[0033] The recording unit records the frequency point information supported by the UE (mobile terminal) in the storage area of ​​the mobile terminal. After the mobile terminal camps on a cell to initiate an update, the mobile terminal records the current RPLMN information, cell and frequency information, and updates these pieces of information every time the cell changes.

[0034] In this way, the network, cell, and frequency information to be searched can be divided into multiple priorities according to the probability of the coverage loss scenario. For examp...

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Abstract

The invention provides a network searching method and a system after a coverage loss. The network searching method comprises the following steps of: after the coverage of a mobile terminal is lost, determining a frequency point to be scanned preferentially according to the probability of an occurrence scene of the coverage loss; and starting scanning and network searching from the frequency point to be scanned preferentially. In the method, the frequency point with a high probability of the occurrence scene of the coverage loss is scanned after the coverage loss to ensure that the mobile terminal can find a network as quick as possible and returns to a coverage area, so frequent meaningless frequency sweeps are not needed, and the mobile terminal not only can access to the network more quickly but also can save electric quantity and prolong the standby time.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a network searching method after coverage loss and a mobile terminal. Background technique [0002] When users use mobile communication devices, they often encounter no signal, that is, coverage loss, for example, entering an elevator, tunnel, or mountain without signal coverage. At this time, the mobile phone will frequently search for available networks until it finds an available cell that can provide normal services. Lots of drain. The general process of current typical PLMN and cell selection is: first, try to reside on the RPLMN (registered public land mobile communication network) stored in the card (SIM or USIM, unless otherwise specified below), use The cell information stored in the cell phone previously resided in the cell. After the cell fails to reside, the frequency scan is initiated immediately. 23.122) initiate residency in turn. [0003] In the daily use...

Claims

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Application Information

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IPC IPC(8): H04W48/16H04B1/707
CPCH04B1/7087Y02B60/50H04W48/16H04W52/0225Y02D30/70
Inventor 陈勇
Owner ZTE CORP
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