Double-mode and double-standby realizing method for TD-SCDMA/PHS single antenna cell phone

A TD-SCDMA, dual-mode, dual-standby technology, applied in the field of dual-mode, dual-standby implementation of mobile terminals, can solve problems such as third-party phone inaccessibility, PHS call interference, dropped calls, etc.

Inactive Publication Date: 2007-11-07
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The actual performance of the user end is that if the TD-SCDMA system transmits during a PHS call, the PHS call will be interfered or dropped, or the PHS third-party phone cannot be connected during a normal TD-SCDMA call.

Method used

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  • Double-mode and double-standby realizing method for TD-SCDMA/PHS single antenna cell phone
  • Double-mode and double-standby realizing method for TD-SCDMA/PHS single antenna cell phone
  • Double-mode and double-standby realizing method for TD-SCDMA/PHS single antenna cell phone

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Embodiment approach

[0016] Fig. 1 is a schematic structural diagram of a TD-SCDMA / PHS dual-mode mobile phone in the first embodiment of the present invention. Including antenna 1 and TD-SCDMA radio frequency module 2 and PHS radio frequency module 3 sharing this antenna, there is TD-SCDMA receiver 201 in the TD-SCDMA radio frequency module, there is PHS receiver 301 in the PHS radio frequency module, between antenna 1 and TD- A high-pass filter 4 is additionally installed between the SCDMA radio frequency modules 2, which attenuates the signal power of the PHS frequency band received by the antenna to be less than the blocking signal power that the TD-SCDMA receiver can bear.

[0017] Fig. 2 is the structural representation of TD-SCDMA / PHS dual-mode mobile phone in the second embodiment of the present invention, on the basis of the first embodiment, a low-pass filter 5 is also installed between the antenna 1 and the PHS radio frequency module 3 , it attenuates the signal power of the TD-SCDMA fre...

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Abstract

A method for realizing double-mode double-standby of TD-SCDMA / PHS mobile phone with single antenna includes adding a low-pass filter between antenna and PHS radio frequency (RF) branch to let PHS signal pass but make TD-SCDMA signal be attenuated to be less than TD-SCDMA signal power being able to be born by PHS receiver or adding a high-pass filter between antenna and TD-SCDMA RF module to let TD-SCDMA signal pass but make PHS signal be attenuated to be less than PHS signal power being able to be born by TD-SCDMA receiver or adding both filters simultaneously to suppress interference to each other of two systems for realizing double-mode double standby.

Description

technical field [0001] The invention relates to a method for realizing dual-mode dual-standby of a mobile terminal, in particular to a method for realizing dual-mode dual-standby of a TD-SCDMA / PHS single-antenna mobile phone. Background technique [0002] At present, when dual standby is implemented in a TD-SCDMA / PHS (TD-SCDMA: Time Division synchronous CDMA, Time Division Synchronous Code Division Multiple Access; PHS: Personal Handy Phone System) dual-mode mobile phone, the following two situations may occur: Two types of interference: 1. The transmitted signals of TD-SCDMA and PHS may become the blocking interference of the receiver of the other party; 2. Since the power amplifier is wideband, the sideband noise generated by the transmitter of TD-SCDMA and PHS on the receiving frequency band of the other party may be Floods unwanted signals, causing interference to receivers. [0003] The working frequency band of PHS is 1900MHz~1920MHz, the uplink and downlink are time-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/32H04B1/10H04B1/52H04B1/525H04W88/06
Inventor 黄河仝雷
Owner ZTE CORP
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