JP2005043054A - Communication system having gps receiver, and control method thereof - Google Patents

Communication system having gps receiver, and control method thereof Download PDF

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Publication number
JP2005043054A
JP2005043054A JP2003199599A JP2003199599A JP2005043054A JP 2005043054 A JP2005043054 A JP 2005043054A JP 2003199599 A JP2003199599 A JP 2003199599A JP 2003199599 A JP2003199599 A JP 2003199599A JP 2005043054 A JP2005043054 A JP 2005043054A
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Prior art keywords
communication device
gps receiver
gps
communication
positioning data
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JP2003199599A
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Japanese (ja)
Inventor
Nobuyuki Segawa
信之 瀬川
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Hitachi Engineering Co Ltd
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Hitachi Engineering Co Ltd
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  • Telephone Function (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a communication system having a GPS receiver, where the transmission operation of a transmitter and a cellular phone does not affect the reception precision of GPSs, and to provide a method for controlling the communication system. <P>SOLUTION: In the communication system that has the GPS receiver and transmits positioning data and other communication data from the GPS receiver, transmission by the transmitter is stopped while positioning data are being received by the GPS receiver, the communication system is set to a state so that it is capable of transmitting after the positioning data reception is completed, and the positioning data are transmitted. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明はGPS受信機付通信機に関するものである。移動物体である自動車、人間の位置をセンタ側から把握するシステムにおいてはGPSによる測位結果を通信機もしくは携帯電話によりセンタへ通信する。本発明は特にGPS受信機付携帯用通信機およびその制御方法に関するものである。
【0002】
【従来の技術】
【特許文献1】特開2002−164803号公報
前記特許文献1の記載はGPS(Global Positioning System)アンテナ装置において、携帯電話による受信の妨害を避けるシステムである。具体的にはGPSアンテナ装置のLNA(Low Noise Amp)の入力部に携帯電話周波数帯のトラップ回路を設けたことにある。すなわち、携帯電話周波数帯の信号は抑止され、GPS周波数帯の電波信号がLNAに入力される。これにより,GPS電波信号を安定して受信できるようにしている。
【0003】
また、GPS受信部の初段に、携帯電話で用いている送信周波数成分を除去するフィルタを用意し影響を排除する方法があるが、共通する電源部からの廻り込みを防止することができず、効果は少ない。
【0004】
また、従来のGPS受信機付通信機、特にGPS受信機付携帯電話においては、GPS受信機の測位結果を、通信機、携帯電話により送信するが、GPSの受信と通信機、携帯電話側の送信動作は必ずしも同期されておらず、通信機、携帯電話の送信動作がGPS受信機の初段プリアンプ、受信部に影響を与えGPS受信機の受信精度に悪影響を及ぼしている。
【0005】
このような課題を解決する従来の技術としては、GPSの受信部と通信機、携帯電話を電気的にアイソレートするとともにGPS受信部の入力側にフィルタ等で送信電波の影響を少なくする方法がある。しかしながら、この方法では送信電波の影響を排除することは困難であり、また通信機全体の小型化をはかることは困難である。
【0006】
【発明が解決しようとする課題】
前記したように、従来技術では通信機、携帯電話の送信動作により、直接もしくは共通する電源部からの廻り込みで、GPS受信機による測位の受信精度に悪影響が及び、結果としてGPSによる所望の測位精度が得られないという課題がある。本発明はこのような課題を解決するために、通信機、携帯電話の送信動作がGPSの受信精度に影響を及ぼさないGPS受信機付通信機とその制御方法を提供することにある。
【0007】
【課題を解決するための手段】
前記課題は以下の手段により解決することができる。
【0008】
GPS受信機を備えた通信機であって、前記GPS受信機からの測位データおよび他の通信データを送信する通信機において、前記GPS受信機による測位データ受信中は通信機を送信停止状態とする送信停止制御部と、前記GPS受信機に起動信号を与えるGPS起動制御部と、前記測位データ受信終了後前記通信機を送信可能状態として測位データを送信制御する調停制御部とから構成した制御部を有することにある。また、前記通信機に携帯電話を用いたことにある。
【0009】
GPS受信機を備えた通信機であって、GPS受信機からの測位データおよび他の通信データを送信する通信機とを有するものにおいて、前記GPS受信機による測位データ受信中は通信機を送信停止状態とし、前記測位データ受信終了後前記通信機を送信可能状態とし、測位データを送信するGPS受信機付通信機の通信制御方法を構成する。
【0010】
また、前記通信機が通信状態にあるときはGPS測位要求信号をホールドし、他の通信が終了後にGPS測位データを受信することにある。
【0011】
【発明の実施の形態】
本発明の実施の形態を図1に示す。図1はGPS受信機付通信機の実施例である。制御部4は、通信機送信部8と送信出力部9の制御およびGPS受信機3の両方を制御するものである。
【0012】
制御部4における調停制御部5は、GPSの要求とその他の通信要求を調停する部分であり、その他の通信を行なっている場合はGPS要求をホールドし、GPSの測位と通信機からの送信を切り替え制御する。すなわち通信機からの送信が終了、あるいは通信状態にないときにGPSの測位をおこなうことにある。前記のように、GPS要求がホールドされている状態でその他の通信が終了した場合および通信状態でない場合に、ホールドされているGPSの要求をあるいはこのときに発生したGPS要求11を受け入れることになる。
【0013】
そしてこの場合にGPS受信機は、GPS測位動作に遷移し、送信停止制御部7経由にて通信機送信出力部9に対し送信停止信号17を送出し送信動作を停止させる。その上でGPS起動制御部6経由にてGPS起動信号16をGPS受信機3に送出しGPS測位受信を開始させる。測位データ受信の完了後調停制御部5は測位データ12を通信機送信部15に送信した後、送信停止制御部7経由にて送信停止信号17を解除し、測位データは送信出力部9、通信用アンテナ10を経由してセンタ側に送信される。通信データ14は、例えば携帯電話の場合の音声信号あるいはパソコンに接続しているような場合は、メールデータなどの信号が対応する。
【0014】
これらの処理は、マイコン等によって構成されるので、その処理フローを図2により説明する。図2においてステップS21はGPSの測位要求があったことを示している。ステップS23では通信機が通信状態かどうかをチェックし、通信中であればステップS25においてGPSの要求をホールドし、通信状態が終了するまで待機状態となる。ステップS27において通信終了(あるいは通信状態ではない)が判定されると、ステップS29でGPS測位モードに遷移することになる。そして電源からの廻り込み等による測位精度の低下を防止するために、ステップS31において通信機8からの送信を停止するために、通信機送信停止信号17を送信出力部9に出力し、送信停止モードにする。
【0015】
その後、ステップS33で、GPS受信機3を起動するためのGPS起動信号16をGPS受信機に出力し、GPSの測位を開始・継続をおこなう(ステップS35)。測位が完了したかどうかをステップS37で判定し、終了するまで測位が継続される。
【0016】
測位が完了すると、ステップS39で、測位データ12を取り込み、測位送信データ15として通信機送信部8に転送する。ステップS41では前記ステップS31で通信機からの送信を停止させている信号17を解除して、通信可能モードにする。そして、ステップS42では、測位データを送信出力部9、通信用アンテナ10を介してセンタ側に送信する。
【0017】
本発明では通信機出力部とGPS受信機を制御する制御部によりGPS測位中は通信部の送信動作を停止するように制御する。これにより送信電波がGPS受信部に直接与える影響及び共通する電源部からの廻り込みを防止することが可能となり、結果としてGPS受信部の感度はGPS単独で動作する場合と同等となる。すなわち、送信動作時は出力信号が大きいため電源からの回り込みの影響が大きいが、GPS受信中は送信を停止しているので影響はない。
【0018】
このように本発明では、GPS受信機によりGPSによる測位中の状態では、通信機による送信は抑止されているため、送信電波がGPS受信部に影響を与えることもなく、また共通の電源部からの廻り込みによる測位精度の低下を防止することができる。
【0019】
【発明の効果】
上記により、本発明によれば、GPS測位中は通信機の送信部は抑止状態にするために、送信電波がGPS受信部に影響を与えることなく、また、共通する電源部からの廻り込みによる測位精度の低下を防止することができる。
【図面の簡単な説明】
【図1】本発明の1実施例であるGPS付通信機のブロック図である。
【図2】図1における処理フロー図の例である。
【符号の説明】
1;GPSアンテナ 2;プリアンプ 3;GPS受信機 4;制御部 5;調停制御部 6;GPS起動制御部 7;送信停止制御部 8;通信機送信部 9;送信出力部 10;通信用アンテナ 11;GPS要求 12;測位データ 13;通信要求 14;通信データ 15;送信データ 16;GPS起動信号17;送信停止信号。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a communication device with a GPS receiver. In a system for grasping the position of a moving object such as an automobile or a person from the center side, the positioning result by GPS is communicated to the center by a communication device or a mobile phone. The present invention particularly relates to a portable communication device with a GPS receiver and a control method thereof.
[0002]
[Prior art]
[Patent Document 1] Japanese Patent Application Laid-Open No. 2002-164803 The description of Patent Document 1 is a system that avoids interference with reception by a mobile phone in a GPS (Global Positioning System) antenna device. Specifically, a trap circuit for a mobile phone frequency band is provided at the input portion of an LNA (Low Noise Amp) of the GPS antenna device. That is, the signal in the cellular phone frequency band is suppressed, and the radio signal in the GPS frequency band is input to the LNA. As a result, GPS radio signals can be received stably.
[0003]
Also, there is a method to eliminate the influence by preparing a filter that removes the transmission frequency component used in the mobile phone at the first stage of the GPS receiving unit, but it is not possible to prevent wraparound from a common power supply unit, Less effective.
[0004]
In addition, in a conventional communication device with a GPS receiver, particularly a mobile phone with a GPS receiver, the positioning result of the GPS receiver is transmitted by a communication device or a mobile phone. The transmission operations are not necessarily synchronized, and the transmission operations of the communication device and the mobile phone affect the first-stage preamplifier and the receiving unit of the GPS receiver and adversely affect the reception accuracy of the GPS receiver.
[0005]
As a conventional technique for solving such a problem, there is a method of electrically isolating a GPS receiving unit, a communication device, and a mobile phone, and reducing the influence of transmission radio waves by a filter or the like on the input side of the GPS receiving unit. is there. However, with this method, it is difficult to eliminate the influence of transmitted radio waves, and it is difficult to reduce the size of the entire communication device.
[0006]
[Problems to be solved by the invention]
As described above, in the prior art, the transmission operation of a communication device or a mobile phone has an adverse effect on the reception accuracy of positioning by a GPS receiver, either directly or by wrapping from a common power supply unit, and as a result, desired positioning by GPS. There is a problem that accuracy cannot be obtained. In order to solve such problems, it is an object of the present invention to provide a communication device with a GPS receiver and a control method therefor, in which the transmission operation of the communication device and the mobile phone does not affect the GPS reception accuracy.
[0007]
[Means for Solving the Problems]
The above problem can be solved by the following means.
[0008]
A communication device including a GPS receiver, wherein the communication device transmits positioning data from the GPS receiver and other communication data, and the communication device is set to a transmission stop state while receiving the positioning data by the GPS receiver. A control unit configured by a transmission stop control unit, a GPS activation control unit that gives an activation signal to the GPS receiver, and an arbitration control unit that controls transmission of the positioning data with the communication device being in a transmittable state after the positioning data reception is completed It is in having. In addition, a mobile phone is used as the communication device.
[0009]
A communication device equipped with a GPS receiver having a communication device that transmits positioning data from the GPS receiver and other communication data, and stops transmitting the communication device while receiving the positioning data by the GPS receiver. And a communication control method for a GPS receiver-equipped communication device that transmits the positioning data after the positioning data reception is completed.
[0010]
Further, when the communication device is in a communication state, a GPS positioning request signal is held, and GPS positioning data is received after other communication is completed.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention is shown in FIG. FIG. 1 shows an embodiment of a communication device with a GPS receiver. The control unit 4 controls both the communication device transmission unit 8 and the transmission output unit 9 and the GPS receiver 3.
[0012]
The arbitration control unit 5 in the control unit 4 is a part that arbitrates GPS requests and other communication requests. When other communication is performed, the GPS request is held and GPS positioning and transmission from the communication device are performed. Switch control. In other words, GPS positioning is performed when transmission from the communication device is completed or not in a communication state. As described above, when another communication is terminated while the GPS request is being held or when the communication is not in the communication state, the held GPS request or the GPS request 11 generated at this time is accepted. .
[0013]
In this case, the GPS receiver shifts to a GPS positioning operation and sends a transmission stop signal 17 to the communication device transmission output unit 9 via the transmission stop control unit 7 to stop the transmission operation. After that, a GPS activation signal 16 is sent to the GPS receiver 3 via the GPS activation control unit 6 to start GPS positioning reception. After completion of positioning data reception, the arbitration control unit 5 transmits the positioning data 12 to the communication device transmission unit 15 and then cancels the transmission stop signal 17 via the transmission stop control unit 7. Is transmitted to the center side via the antenna 10. The communication data 14 corresponds to, for example, a voice signal in the case of a mobile phone or a signal such as mail data when connected to a personal computer.
[0014]
Since these processes are constituted by a microcomputer or the like, the process flow will be described with reference to FIG. In FIG. 2, step S21 indicates that there has been a GPS positioning request. In step S23, it is checked whether or not the communication device is in a communication state. If communication is in progress, a GPS request is held in step S25, and a standby state is maintained until the communication state is completed. If it is determined in step S27 that the communication has ended (or is not in a communication state), the process proceeds to the GPS positioning mode in step S29. Then, in order to prevent a decrease in positioning accuracy due to wraparound from the power source, in order to stop transmission from the communication device 8 in step S31, a communication device transmission stop signal 17 is output to the transmission output unit 9 to stop transmission. Enter mode.
[0015]
Thereafter, in step S33, a GPS activation signal 16 for activating the GPS receiver 3 is output to the GPS receiver, and GPS positioning is started and continued (step S35). Whether or not the positioning is completed is determined in step S37, and the positioning is continued until the positioning is completed.
[0016]
When the positioning is completed, the positioning data 12 is captured and transferred to the communication device transmission unit 8 as the positioning transmission data 15 in step S39. In step S41, the signal 17 that has stopped transmission from the communication device in step S31 is canceled, and a communication enable mode is set. In step S42, the positioning data is transmitted to the center side via the transmission output unit 9 and the communication antenna 10.
[0017]
In the present invention, the control unit that controls the communication device output unit and the GPS receiver controls to stop the transmission operation of the communication unit during GPS positioning. As a result, it is possible to prevent the direct influence of the transmission radio wave on the GPS receiving unit and the wraparound from the common power supply unit. As a result, the sensitivity of the GPS receiving unit is equivalent to that when the GPS is operated alone. That is, during the transmission operation, the output signal is large, so the influence of the wraparound from the power supply is great, but there is no influence because the transmission is stopped during the GPS reception.
[0018]
As described above, in the present invention, since the transmission by the communication device is suppressed during the positioning by the GPS receiver by the GPS receiver, the transmission radio wave does not affect the GPS receiving unit, and the common power supply unit It is possible to prevent a decrease in positioning accuracy due to the wraparound.
[0019]
【The invention's effect】
As described above, according to the present invention, since the transmission unit of the communication device is in a suppression state during the GPS positioning, the transmission radio wave does not affect the GPS reception unit, and by the wraparound from the common power supply unit A decrease in positioning accuracy can be prevented.
[Brief description of the drawings]
FIG. 1 is a block diagram of a GPS-equipped communication device according to an embodiment of the present invention.
FIG. 2 is an example of a processing flow diagram in FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1; GPS antenna 2; Preamplifier 3; GPS receiver 4; Control part 5; Arbitration control part 6; GPS starting control part 7; Transmission stop control part 8; Communication machine transmission part 9; Transmission output part 10; GPS request 12; positioning data 13; communication request 14; communication data 15; transmission data 16; GPS start signal 17;

Claims (4)

GPS受信機を備えた通信機であって、前記GPS受信機からの測位データおよび他の通信データを送信する通信機において、前記GPS受信機による測位データ受信中は通信機を送信停止状態とする送信停止制御部と、前記GPS受信機に起動信号を与えるGPS起動制御部と、前記測位データ受信終了後前記通信機を送信可能状態として測位データを送信制御する調停制御部とから構成した制御部を有することを特徴とするGPS受信機付通信機。A communication device including a GPS receiver, wherein the communication device transmits positioning data from the GPS receiver and other communication data, and the communication device is set in a transmission stop state during reception of the positioning data by the GPS receiver. A control unit configured by a transmission stop control unit, a GPS activation control unit that gives an activation signal to the GPS receiver, and an arbitration control unit that controls transmission of the positioning data by setting the communication device in a transmittable state after receiving the positioning data A communication device with a GPS receiver. 請求項1において、前記通信機は携帯電話であることを特徴とするGPS受信機付通信機。2. The communication device with a GPS receiver according to claim 1, wherein the communication device is a mobile phone. GPS受信機を備えた通信機であって、GPS受信機からの測位データおよび他の通信データを送信する通信機とを有するものにおいて、前記GPS受信機による測位データ受信中は通信機を送信停止状態とし、前記測位データ受信終了後前記通信機を送信可能状態とし、測位データを送信することを特徴とするGPS受信機付通信機の通信制御方法。A communication device equipped with a GPS receiver having a communication device that transmits positioning data from the GPS receiver and other communication data, and stops transmitting the communication device while receiving the positioning data by the GPS receiver. A communication control method for a communication device with a GPS receiver, wherein the communication device is set in a transmittable state after the positioning data reception is completed, and the positioning data is transmitted. 請求項3において、前記通信機が通信状態にあるときはGPS測位要求信号をホールドし、他の通信が終了後にGPS測位データを受信することを特徴とするGPS受信機付通信機の通信制御方法。4. A communication control method for a communication device with a GPS receiver according to claim 3, wherein when the communication device is in a communication state, a GPS positioning request signal is held, and GPS positioning data is received after other communication is completed. .
JP2003199599A 2003-07-22 2003-07-22 Communication system having gps receiver, and control method thereof Pending JP2005043054A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009518921A (en) * 2005-12-09 2009-05-07 ノキア コーポレイション Switching between wireless communication system mode and satellite positioning system mode based on detection of voice section in communication equipment
JP2010539487A (en) * 2007-09-11 2010-12-16 クゥアルコム・インコーポレイテッド Dynamic positioning request processing in mobile radio networks
JP2013025198A (en) * 2011-07-22 2013-02-04 Nikon Corp Accessory and accessory control program
JP2014014024A (en) * 2012-07-04 2014-01-23 Ricoh Co Ltd Communication apparatus, communication system, and communication control method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009518921A (en) * 2005-12-09 2009-05-07 ノキア コーポレイション Switching between wireless communication system mode and satellite positioning system mode based on detection of voice section in communication equipment
JP2010539487A (en) * 2007-09-11 2010-12-16 クゥアルコム・インコーポレイテッド Dynamic positioning request processing in mobile radio networks
JP2013040948A (en) * 2007-09-11 2013-02-28 Qualcomm Inc Dynamic positioning request processing in mobile wireless network
US8797209B2 (en) 2007-09-11 2014-08-05 Qualcomm Incorporated Optimized ordering of assistance data in a mobile radio network
US8948778B2 (en) 2007-09-11 2015-02-03 Qualcomm Incorporated Delayed radio resource signaling in a mobile radio network
US9140801B2 (en) 2007-09-11 2015-09-22 Qualcomm Incorporated Delayed radio resource signaling in a mobile radio network
US9448308B2 (en) 2007-09-11 2016-09-20 Qualcomm Incorporated GPS yield for emergency calls in a mobile radio network
JP2013025198A (en) * 2011-07-22 2013-02-04 Nikon Corp Accessory and accessory control program
JP2014014024A (en) * 2012-07-04 2014-01-23 Ricoh Co Ltd Communication apparatus, communication system, and communication control method

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