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Double-mode terminal and method of double-mode synchronous operation in double-mode terminal

A dual-mode terminal and mode technology, applied in the field of communication, can solve problems such as the use of dual-mode terminals, and achieve the effects of reducing power consumption and simple implementation.

Active Publication Date: 2007-12-19
LENOVO (BEIJING) CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

To make GSM / CDMA run at the same time, one method is that GSM only uses the 1710-1755MHz (uplink) / 1805-1850MHz (downlink) frequency band, but the network quality of the domestic GSM frequency band 885-915MHz (uplink) / 930-960MHz (downlink) And the coverage is much better than the 1710-1755MHz (uplink) / 1805-1850MHz (downlink) frequency band, and the method of restricting GSM to the 1710-1755MHz (uplink) / 1805-1850MHz (downlink) frequency band has caused the use of dual-mode terminals to be severely affected. big limit

Method used

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  • Double-mode terminal and method of double-mode synchronous operation in double-mode terminal

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Embodiment Construction

[0027] In order to better understand the present invention, the working principle of a common single-mode terminal is briefly introduced first. A terminal generally includes a control module, a transmitter and a receiver. When the terminal is in standby, the receiver regularly receives network broadcast signals. If the broadcast signal cannot be received, or the signal strength is lower than the threshold, the control module starts network search and notifies the receiver to search for network signals in the frequency band of the terminal's working mode. When the receiver searches for a network signal and the signal strength reaches a threshold, it camps on the cell where it is located. When a terminal enters a communication state, such as entering a call state, sending and receiving short messages, or entering a packet service state, it transmits signals through the transmitter and receives signals through the receiver.

[0028] The key of the present invention is: in the du...

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Abstract

This invention discloses a double-mode terminal and a method for the double-mode operating at the same time, in which, a first mode and a second mode in the double modes are stand-by at the same time. The method includes: when the first mode enters into the communication state, the emitter of the second mode is closed, and when communication of the first mode is finished, the emitter of the second mode is turned on, when the second mode is in the communication state, a network search function of the first mode is turned off and the second mode communication is finished, the network search function of the first mode is turned on, which eliminates RF interference of one mode to the other mode when the double modes work at the same time.

Description

technical field [0001] The invention relates to the communication field, in particular to a dual-mode terminal and a method for simultaneous operation of dual modes in the dual-mode terminal. Background technique [0002] With the rapid development of the communication industry, mobile communication consumption is no longer limited to a single operator, a single network and pure voice services, and the diversification of communication consumption choices has gradually become a trend. Dual-mode terminals can operate in two modes, such as Global System for Mobile Communications (GSM) mode and Code Division Multiple Access (CDMA) mode, and can quickly switch modes according to network conditions or user selections, satisfying the needs of users The needs of diversified communication consumption. [0003] The existing dual-mode terminal has two implementation modes, one is a dual-mode switching operation mode, and the other is a dual-mode independent operation mode. In the dua...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04Q7/32H04W8/00H04W28/04H04W52/02H04W88/06
CPCH04W8/005H04W88/06H04W28/04H04W52/0248Y02D30/70
Inventor 张孝林张学军
Owner LENOVO (BEIJING) CO LTD
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