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Method for re-connecting radio communication terminal with network and terminal therefor

A wireless communication network and network technology, applied in the corresponding terminal field, can solve the problems that network companies cannot provide services, long wake-up time, long backup cycle, etc.

Inactive Publication Date: 2005-02-02
ALCATEL LUCENT SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] In addition to excessive energy consumption, prior art methods result in long backup periods and relatively long wake-up times during which the user cannot receive calls
[0018] The long wake-up time also brings a disadvantage to the network company, that is, the network company cannot provide service during this time

Method used

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  • Method for re-connecting radio communication terminal with network and terminal therefor
  • Method for re-connecting radio communication terminal with network and terminal therefor
  • Method for re-connecting radio communication terminal with network and terminal therefor

Examples

Experimental program
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Embodiment Construction

[0031] When a user of a wireless communication terminal such as a mobile phone moves around, the quality of the signal received by the terminal from the network often changes.

[0032] The terminal searches for an optimal operating frequency to connect to a station transmitting on that frequency.

[0033] Signal strength can vary from strong to weak, depending on the geographic structure of the area in which the end user is moving.

[0034] There are mainly two situations.

[0035] Sites are relatively far away in areas with relatively weak network coverage, such as in the case of mountainous areas or when users are passing quickly on a highway.

[0036] When moving away from the station to which the terminal is connected, the strength of the received signal gradually decreases as shown in FIG. 1 , where time is plotted on the axis of abscissa and the strength of the received signal is plotted on the axis of ordinate.

[0037] The strength is reduced to a value that does not...

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PUM

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Abstract

A method of connecting to a radiocommunication network a terminal which is in a standby mode because of temporary unavailability of the signal from the network includes a step of periodically scanning frequencies of the radiocommunication network using one or more sequences each associated with a predetermined list of frequencies selected from all the frequencies.

Description

technical field [0001] The invention relates to a method of reconnecting a wireless communication terminal to a network, which increases the terminal's standby time (the time before the battery has to be recharged) and reduces its wake-up time when a signal is available again, the invention also relates to the corresponding terminal. Background technique [0002] A wireless communication terminal such as a GSM or DECT cellular telephone must be located within an area covered by a transmitting base station in order to receive and transmit voice or other data. [0003] Each transmitter defines a geographical area, called a cell, in which data reception is satisfactory. The density of the cells and the location of the transmitter sites are arranged according to their geographical location. [0004] Urban areas or busy roads have relatively dense coverage, except in confined spaces such as car parks or indoor spaces (cinemas, theaters, etc.), where reception is virtually impos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/28H04W36/30
CPCH04W48/16H04W72/02H04W36/30H04W36/305H04W36/302
Inventor 卢克·阿蒂芒特詹尼克·伯丁
Owner ALCATEL LUCENT SAS