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Mobile telephone and method of preferential system for connecting in multiple communication system

By using different electric field intensity thresholds to judge and control switch switching in mobile phones, the problem of unstable connections between traditional mobile phones among multiple communication systems is solved, smooth and stable system switching is achieved, and communication continuity is improved.

Inactive Publication Date: 2011-03-16
LENOVO INNOVATIONS LTD HONG KONG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] but, figure 1 The operation of the phone described in is problematic, so that the connection between the communication systems is sometimes frequent and the communication becomes unstable

Method used

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  • Mobile telephone and method of preferential system for connecting in multiple communication system
  • Mobile telephone and method of preferential system for connecting in multiple communication system
  • Mobile telephone and method of preferential system for connecting in multiple communication system

Examples

Experimental program
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Embodiment Construction

[0023] figure 2 is a schematic block diagram showing the configuration of a preferred embodiment of the mobile phone according to the present invention.

[0024] refer to figure 2 , the mobile phone 100 includes a controller 101 , a transceiver 102 for system A, a transceiver 103 for system B, an antenna switch 104 , an antenna 105 , an audio section 106 and an MMI (man machine interface) section 107 .

[0025] Transceiver 102 for system A communicates with system A base station (not shown) via antenna 105 . The transceiver 102 for system A has common functions related to common transceivers, including at least modulation, demodulation and amplification functions. Because the functionality of the transceiver 102 for system A is well known in the art, descriptions of its details are omitted. System A is a preferred connection communication system predetermined by a user or a service operator, such as a primary system. Usually, the communication fee required by the host sy...

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PUM

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Abstract

The invention provides a mobile phone, comprising a first judging circuit which judges whether the mobile phone is out of the service range of a preferable communication system when the mobile phone is connected with a preferable communication system, a first switch used for being connected with a non-preferable communication system based on the positive result of the first judging circuit, a second judging circuit which judges whether the mobile phone is in the service range of the preferable communication system when the mobile phone is connected with the non-preferable communication system, and a second switch used for being connected with the preferable communication system based on the positive judging result of the second judging circuit; wherein, the first judging circuit and the second judging circuit judge whether the mobile phone is out of or in the service range of the preferable communication system according to different criterions.

Description

[0001] divisional application [0002] This application is a divisional application of Chinese Patent Application No. 200410029751.2 with a filing date of March 24, 2004, entitled "Mobile Phone and Method for Connecting to a Preferred System Among Multiple Communication Systems". technical field [0003] The present invention relates to mobile phones and methods, and more particularly to a mobile phone for connection to a preferred communication system among a plurality of communication systems having different frequency bands. Background technique [0004] Mobile telephones that can be connected to multiple communication systems having different radio frequency bands are widely known. A preferred communication system selected by a conventional mobile phone among a plurality of communication systems is predetermined by a user or a communication service provider. [0005] Such a conventional mobile phone is described in Japanese Laid-Open Patent Application Publication No. H...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W48/18H04W36/14H04W88/02
CPCH04W48/18H04W88/02
Inventor 并木秀夫大森义朗
Owner LENOVO INNOVATIONS LTD HONG KONG