WO2012126248A1 - Procédé et terminal permettant de supprimer des brouillages mutuels entre modes de terminal - Google Patents

Procédé et terminal permettant de supprimer des brouillages mutuels entre modes de terminal Download PDF

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Publication number
WO2012126248A1
WO2012126248A1 PCT/CN2011/082297 CN2011082297W WO2012126248A1 WO 2012126248 A1 WO2012126248 A1 WO 2012126248A1 CN 2011082297 W CN2011082297 W CN 2011082297W WO 2012126248 A1 WO2012126248 A1 WO 2012126248A1
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WO
WIPO (PCT)
Prior art keywords
mode
service
terminal
filter
gsm
Prior art date
Application number
PCT/CN2011/082297
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English (en)
Chinese (zh)
Inventor
刘海广
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2012126248A1 publication Critical patent/WO2012126248A1/fr

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/005Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H04B1/0064Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with separate antennas for the more than one band
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06Receivers
    • H04B1/10Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/109Means associated with receiver for limiting or suppressing noise or interference by improving strong signal performance of the receiver when strong unwanted signals are present at the receiver input

Definitions

  • the present invention relates to communication technologies, and in particular, to a method and a terminal for eliminating mutual interference between terminal modes.
  • both TD-SCDMA and GSM transceivers have independent baseband chips (DBBs) and transceivers (Transceivers).
  • DBBs baseband chips
  • Transceivers Transceivers
  • the two types of transceiver systems work independently. Due to the limitations of the terminal printed circuit board (PCB) structure, The space between the modulo circuits is limited, and the isolation between the antennas is poor.
  • PCB terminal printed circuit board
  • GSM and TD are both If any one works, radiating large out-of-band spurs, harmonics, etc.
  • the present invention provides a method and terminal for eliminating mutual interference between terminal modes to solve the problem of mutual interference of transmission.
  • the present invention provides a method for eliminating mutual interference between terminal modes, the terminal supporting a first mode and a second mode, the method comprising: transmitting by a high-Q filter pair set on a transmission path of two modes Signal filtering;
  • the transmit path transmits the filtered transmit signal.
  • the above method can have the following characteristics:
  • the high Q value filter includes a high Q film bulk acoustic wave resonance (FBAR) filter and a cavity filter.
  • FBAR high Q film bulk acoustic wave resonance
  • the above method may also have the following characteristics:
  • the high Q value filter is located between the antenna switch and the power amplifier (PA) in the transmit path.
  • PA power amplifier
  • the above method may also have the following characteristics:
  • the method further includes: when the baseband chip (DBB) in the transmit and receive path detects that the terminal performs the first service in the first mode, and in the When the second mode has an access request of the second service, the transmit power of the first mode or the working rate of the first service is decreased.
  • DBB baseband chip
  • the above method may also have the following characteristics:
  • the first mode is a global mobile communication system (GSM) mode
  • the first service is a voice service
  • the second mode is a time division synchronous code division multiple access (TD) mode
  • the second service is a data service
  • the first mode is a TD mode
  • the first service is a data service
  • the second mode is a GSM mode
  • the second service is a voice service.
  • the present invention also provides a terminal, the terminal includes a transceiver path supporting the first mode and the second mode, and the transmission path supporting the two modes includes an antenna switch and a power amplifier (PA), and the transceiver path includes a baseband chip ( DBB), the terminal further includes a high Q value filter,
  • the high Q value filter is located between the antenna switch and the PA and is configured to: filter the transmit signals of the two modes.
  • the terminal may have the following characteristics:
  • the high Q value filter includes a high Q film bulk acoustic wave resonance (FBAR) filter and a cavity filter.
  • FBAR high Q film bulk acoustic wave resonance
  • the above terminal may also have the following features:
  • the DBB includes a protocol detection module, where the protocol detection module is configured to detect that the terminal performs the first service in the first mode, and when the second mode has an access request of the second service, The transmit power of the first mode or the operating rate of the first service is reduced.
  • the above terminal may also have the following features:
  • the first mode is a Global System for Mobile Communications (GSM) mode, and the first service is a voice service;
  • GSM Global System for Mobile Communications
  • the second mode is a Time Division Synchronous Code Division Multiple Access (TD) mode
  • the second service is a data service.
  • TD Time Division Synchronous Code Division Multiple Access
  • the above terminal may also have the following features:
  • the first mode is a TD mode, and the first service is a data service;
  • the second mode is a GSM mode, and the second service is a voice service.
  • FIG. 1 is a schematic diagram of a circuit topology of a conventional dual mode dual standby transceiver circuit
  • FIG. 2 is a schematic structural diagram of an embodiment of a dual mode dual-transmission mutual interference suppression circuit according to the present invention
  • FIG. 3 is a schematic diagram of a topology structure of an embodiment of a dual mode dual standby circuit for improving dual-mode mutual interference according to the present invention
  • 4 is a spectrum distribution diagram of a DCS band and a TD F band according to the present invention
  • FIG. 5 is a flow chart of protocol detection for simultaneously operating the F-band of the TD and the DCS band of the GSM introduced by the present invention. Preferred embodiment of the invention
  • the invention proposes a method for solving dual-mode mutual interference of terminals such as TD-SCDMA and GSM dual-mode dual standby mobile phones, which introduces a high Q value filter such as a high Q value film bulk acoustic resonator (FBAR) filter at the transmitting end.
  • a high Q value filter such as a high Q value film bulk acoustic resonator (FBAR) filter at the transmitting end.
  • FBAR film bulk acoustic resonator
  • the invention also introduces a protocol detection mechanism.
  • the GSM DCS frequency band 1805.2MHz-1879.8MHz
  • the TD F frequency band 1880.8MHZ-1919.2MHz
  • the transmission of TD in the F-band is easy to block the reception of GSM in DCS.
  • TD and GSM share a baseband chip.
  • the introduced protocol detection can detect the dual-mode path in real time through the baseband chip, effectively solving the dual-mode dual-standby terminal working in DCS and TD.
  • the F-band does not work properly.
  • the invention can effectively solve the problem of transmitting mutual interference in the TD-SCDMA/GSM dual mode dual standby terminal, and effectively avoids the mutual interference problem caused by the simultaneous operation of the dual mode by the out-of-band suppression function of the FBAR filter (Filter);
  • the protocol detection mechanism can effectively solve the problem that the GSM DCS and the TD's F-band work cannot be accessed by the other party, and has practical value.
  • FIG. 2 is a schematic structural diagram of an embodiment of a dual mode dual standby transmit interference rejection circuit according to the present invention.
  • a GSM900/1800, TD 1900/2010 is integrated between an antenna switch of a transmission path and a PA.
  • the four-band out-of-band suppresses the high-Q Fbar Filter above 45db.
  • the high-Q filter introduced has a narrow transition band and a strong out-of-band rejection.
  • the TD2010 band transmits signals to GSM.
  • the interference of the DCS receiver is as follows: the typical TD-SCDMA power amplifier has a noise of -134dBm/Hz in the DCS 1800 receiving band, and the GSM mode has a bandwidth of 200KHz per channel.
  • the TD power is placed in the DCS 1800 band.
  • the DCS 1800 band power amplifier has an output noise of -85dBm (RBW100KHz) in the TD band, and the TD channel bandwidth is 1.28MHz.
  • TD-SCDMA and GSM dual-mode terminals work simultaneously, the mutual interference between TD's 2010 frequency band and GSM DCS frequency band can be greatly reduced, which can effectively improve.
  • the dual-mode dual standby terminal simultaneously runs the quality of working voice and data services.
  • the introduced Fbar Filter has a narrow Q-band and a high Q-value. It has the advantage of large out-of-band attenuation, which can reduce the complex performance indicators of the terminal, such as transmitting spurs, even harmonics, radiated spurs, radiated disturbances, etc. In particular, when a plurality of terminals in the same cell work simultaneously, the solution can effectively reduce mutual interference when the dual-mode terminal works at the same time, and increase system capacity.
  • the present invention provides a terminal, the terminal includes a transceiver path supporting the first mode and the second mode, and the transmission path supporting the two modes includes an antenna switch and a power amplifier (PA), and the transceiver path includes a baseband chip (DBB)
  • the terminal further includes a high-Q filter, and the high-Q filter is located between the antenna switch and the PA for filtering the two modes of the transmit signal.
  • the terminal can eliminate mutual interference between terminal modes, and the implementation process includes:
  • the transmitted signal is filtered by a high Q filter disposed on the transmit path of the two modes; the transmit path transmits the filtered transmit signal.
  • the above terminal including the high Q value filter can better solve the problem of transmitting mutual interference.
  • the DBB may include a protocol detection module, where the protocol detection module is configured to detect that the terminal performs a first service in the first mode, and has access to a second service in the second mode. When requested, the transmit power of the first mode or the working rate of the first service is reduced.
  • the first mode is a Global System for Mobile Communications (GSM) mode
  • the first service is a voice service
  • the second mode is a Time Division Synchronous Code Division Multiple Access (TD) mode
  • the second service is data. business.
  • the first mode is a TD mode
  • the first service is a data service
  • the second mode is a GSM mode
  • the second service is a voice service.
  • the protocol detection module detects the signal of the voice (CS) channel in real time to confirm whether the CS has voice telephone access.
  • the protocol detection part informs the PS module to reduce the data service.
  • the rate or temporary suspension can avoid the problem that the F-band of the GSM DCS and the TD in the dual-mode dual standby cannot be compatible, so that the CS voice cannot be accessed when the terminal performs the PS service.
  • protocol detection module may be located in the DBB shown in FIG. 1, that is, two interconnected protocol detection modules are provided in the DBB of two modes; in addition, the two DBBs may also be The protocol detection module is combined into one, as shown in Figure 3.
  • FIG. 3 it is a schematic diagram of a topology structure of a dual-mode dual-standby circuit embodiment for improving dual-mode mutual interference according to the present invention.
  • the introduced protocol detection module can effectively solve the F-band of TD-SCDMA (1880.8MHz-l 919.2MHz).
  • the GSM DCS (1800MHz TX: 1710.2MHz-1784.8MHz, RX: 1805.2MHz-l 879.8MHz)
  • the spectrum distribution of the DCS and TD F bands is shown in Figure 4. From the spectrum structure, the last channel of the DCS downlink is adjacent to the 9404 channel band of the F band of the TD. No measures are taken. In theory, the two The frequency band cannot work at the same time.
  • the dual mode dual standby terminal can work simultaneously on the two adjacent frequencies.
  • a protocol detection flowchart for simultaneously operating the F-band of the TD and the DCS band of the GSM introduced by the present invention when the F-band of the TD-SCDMA is in a transmitting state, and the DCS band of the GSM is simultaneously in a receiving state, At this time, the F-band of the TD is adjacent to the DCS of the GSM.
  • the TD transmits at the maximum power of 24 dBm the reception of the DCS of the GSM is very badly affected, causing the DCS to receive congestion and fail to establish communication, such as the terminal in the TD F.
  • the frequency band performs the PS service.
  • the CS of the GSM network (referred to as the G network) has voice call access
  • the CS voice call of the G network cannot be established due to the reception blocking, and the introduced protocol detection module can be in the TD.
  • the PS service is performed
  • the CS channel of the G network is detected in real time for voice access.
  • the protocol detection module notifies the control module of the DBB, and the control of the DBB.
  • the module can ensure the success of the random access of the TD-SCDMA and GSM dual mode dual standby terminals, thereby realizing the dual mode terminal in two modes. At the same time work normally.
  • the above method and terminal for eliminating mutual interference between terminal modes effectively solve the problem of transmitting mutual interference in the TD-SCDMA/GSM dual mode dual standby terminal.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention porte sur un procédé et un terminal permettant de supprimer des brouillages mutuels entre modes de terminal, le terminal comprenant des trajets d'émission/réception acceptant un premier mode et un deuxième mode, le trajet de transmission acceptant les deux modes comprend un commutateur d'antenne et un amplificateur de puissance (PA), les trajets d'émission/réception comprennent une puce de bande de base numérique (DBB), le terminal comprend en outre un filtre à valeur Q élevée situé entre le commutateur d'antenne et le PA de façon à filtrer les signaux à transmettre dans les deux modes. La solution technique de la présente invention résout efficacement le problème des brouillages mutuels dans des transmissions à partir de terminaux à double attente en mode double TD-SCDMA (accès multiple par répartition en code synchrone à répartition dans le temps)/GSM (système mondial de communications mobiles).
PCT/CN2011/082297 2011-03-22 2011-11-16 Procédé et terminal permettant de supprimer des brouillages mutuels entre modes de terminal WO2012126248A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2011100692920A CN102148622A (zh) 2011-03-22 2011-03-22 消除终端模式间互扰的方法及终端
CN201110069292.0 2011-03-22

Publications (1)

Publication Number Publication Date
WO2012126248A1 true WO2012126248A1 (fr) 2012-09-27

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CN (1) CN102148622A (fr)
WO (1) WO2012126248A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020051798A1 (fr) * 2018-09-12 2020-03-19 华为技术有限公司 Dispositif et procédé d'annulation destiné à un signal d'émission de spectre radio

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CN102148622A (zh) * 2011-03-22 2011-08-10 中兴通讯股份有限公司 消除终端模式间互扰的方法及终端
CN102307352B (zh) * 2011-08-22 2017-07-07 中兴通讯股份有限公司 相邻频段共存的方法、装置及终端
CN102420634A (zh) * 2011-12-07 2012-04-18 捷开通讯科技(上海)有限公司 无线通信收发系统
US20140213235A1 (en) * 2013-01-31 2014-07-31 Qualcomm Incorporated Method of Robust Transmit (Tx) Processing for Radio Frequency Coexistence Management in Dual-SIM-Dual-Active communication Devices
CN104995989A (zh) * 2013-02-22 2015-10-21 意法-爱立信有限公司 双卡双通终端的通信方法、装置及双卡双通终端
CN105307178A (zh) * 2014-07-31 2016-02-03 展讯通信(上海)有限公司 双模双连接终端及其通信方法
CN109769267B (zh) * 2017-11-09 2024-04-16 天翼电信终端有限公司 一种降低同频干扰的处理方法及移动终端
CN109167187B (zh) * 2018-08-08 2021-07-27 维沃移动通信有限公司 天线调谐矩阵单元、辐射杂散控制装置、方法及移动终端
CN114826316A (zh) * 2022-04-08 2022-07-29 Oppo广东移动通信有限公司 一种射频收发电路、控制方法及电子设备
CN116112032A (zh) * 2022-10-19 2023-05-12 维沃移动通信有限公司 干扰处理方法、装置、电子设备及存储介质

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CN102148622A (zh) * 2011-03-22 2011-08-10 中兴通讯股份有限公司 消除终端模式间互扰的方法及终端

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US6898419B1 (en) * 2001-04-30 2005-05-24 Nortel Networks Corporation Remotely adjustable bandpass filter
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020051798A1 (fr) * 2018-09-12 2020-03-19 华为技术有限公司 Dispositif et procédé d'annulation destiné à un signal d'émission de spectre radio

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