JP2009260677A - Mobile station radio apparatus - Google Patents

Mobile station radio apparatus Download PDF

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JP2009260677A
JP2009260677A JP2008107491A JP2008107491A JP2009260677A JP 2009260677 A JP2009260677 A JP 2009260677A JP 2008107491 A JP2008107491 A JP 2008107491A JP 2008107491 A JP2008107491 A JP 2008107491A JP 2009260677 A JP2009260677 A JP 2009260677A
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station radio
mobile station
base station
radio apparatus
gps
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Junji Sukai
順二 須貝
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Abstract

<P>PROBLEM TO BE SOLVED: To make long-time operation possible by attaining power saving by improving efficiency in battery saving and to improve utilization efficiency in space. <P>SOLUTION: A mobile station radio apparatus, in a wireless communication system for performing communication between mobile station radio apparatuses 11a, 11b and a base station radio apparatuses 12a, 12b, includes: a memory 24 for storing beforehand information on a position where the base station radio apparatuses 12a, 12b are installed; a GPS receiver 37 for receiving a radio wave from a GPS satellite 14 to acquire information on a position where the mobile station radio apparatuses 11a, 11b are located at present; and a CPU 21 for calculating the distance between the mobile station radio apparatus and the base station radio apparatus from the acquired position information of the mobile station radio apparatuses 11a, 11b and the position information of the base station radio equipment 12a, 12b being stored in the memory 24 and for determining the base station radio apparatuses 12a, 12b to be captured on the basis of the distance. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、移動局無線装置と基地局無線装置との間、あるいは移動局無線装置間で通信を行う無線通信システムにおける移動局無線装置に関する。   The present invention relates to a mobile station radio apparatus in a radio communication system that performs communication between a mobile station radio apparatus and a base station radio apparatus or between mobile station radio apparatuses.

従来の無線通信システムにおける移動局無線装置は、周波数の異なる複数の通信ゾーンを切り替えて通信を行う場合に、所定の時間毎に受信周波数を受信可能な通信ゾーンの周波数に切り替えてその通信ゾーンの受信入力電圧を測定し、常に最適な(高い)受信入力電圧の通信ゾーンにて通信できるように周波数の切り替えを行っていた(例えば、特許文献1参照)。   When a mobile station radio apparatus in a conventional radio communication system performs communication by switching a plurality of communication zones having different frequencies, the mobile station radio apparatus switches to a frequency of a communication zone capable of receiving a reception frequency every predetermined time. The received input voltage is measured, and the frequency is switched so that communication is always possible in the communication zone of the optimum (high) received input voltage (see, for example, Patent Document 1).

また、移動局無線装置にGPSを備えることによって、移動局無線装置の位置精度を上げたり速度を把握することによって最適な通信を行うものもある(例えば、特許文献2、3、4参照)。   In addition, there is a mobile station radio apparatus equipped with a GPS so that optimal communication is performed by increasing the position accuracy of the mobile station radio apparatus or grasping the speed (see, for example, Patent Documents 2, 3, and 4).

特開平11−298938号公報(第6頁、第1図)Japanese Patent Laid-Open No. 11-289838 (page 6, FIG. 1) 特開平8−331638号公報JP-A-8-331638 特開平9−98465号公報Japanese Patent Laid-Open No. 9-98465 特開2001−127695号公報JP 2001-127695 A

特許文献1では、常に最適な受信入力電圧を取得するために、本来使用する必要のない基地局無線装置の受信入力電圧についても測定を行っていた。従って、測定のたびに受信入力電圧を受信する受信機の電源を入れる必要があり、バッテリーセービングが十分に行えないため省電力化できず、長時間の稼動ができないという問題があった。   In Patent Document 1, in order to always obtain the optimum reception input voltage, the reception input voltage of a base station radio apparatus that is not originally required to be measured is also measured. Therefore, it is necessary to turn on the power of the receiver that receives the received input voltage every time measurement is performed, and battery saving cannot be performed sufficiently. Therefore, there is a problem in that power saving cannot be achieved and long-time operation cannot be performed.

また、移動局無線装置間で通信を行う場合には、互いの距離に関係なく常に最大送信電力で通信を行っていた。そのため、互いが近距離であって少ない送信電力でも十分に通信が可能であるにもかかわらず、必要以上に大きな送信電力で通信を行っているため省電力化にならない。さらに、必要以上に相手の移動局無線装置に電波が到達してしまうことで、他局の通信の妨げになることがあり、空間の利用効率が悪くなるという問題があった。   In addition, when communication is performed between mobile station radio apparatuses, communication is always performed with the maximum transmission power regardless of the mutual distance. For this reason, although communication is sufficiently possible even with a short distance from each other and a small transmission power, communication is performed with a larger transmission power than necessary, and thus power saving is not achieved. Furthermore, when radio waves reach the other mobile station radio device more than necessary, there is a problem that communication with other stations may be hindered, and the space utilization efficiency deteriorates.

特許文献2、3、4では、特許文献1と同様に、バッテリーセービングが十分に行えずに省電力化できなかった。   In Patent Documents 2, 3, and 4, similarly to Patent Document 1, battery saving cannot be performed sufficiently and power saving cannot be achieved.

本発明は、これらの問題を解決するためになされたもので、バッテリーセービングの効率を向上させることによって省電力化を図って長時間の稼動を可能とするとともに、空間の利用効率を向上させることを目的とする。   The present invention has been made to solve these problems, and by improving battery saving efficiency, it is possible to save power and to operate for a long time, and to improve the space utilization efficiency. With the goal.

上記の課題を解決するために、本発明による移動局無線装置は、移動局無線装置と基地局無線装置との間で通信を行う無線通信システムにおける移動局無線装置であって、基地局無線装置が設置されている位置情報を予め記憶する記憶手段と、GPS(Global Positioning System)衛星からの電波を受信し、移動局無線装置が現存する位置情報を取得するGPS受信手段と、GPS受信手段によって取得された移動局無線装置の位置情報と記憶手段に記憶されている基地局無線装置の位置情報とから、移動局無線装置と基地局無線装置との距離を算出し、距離に基づいて捕捉する基地局無線装置を決定する決定手段とを備えることを特徴とする。   In order to solve the above problems, a mobile station radio apparatus according to the present invention is a mobile station radio apparatus in a radio communication system that performs communication between a mobile station radio apparatus and a base station radio apparatus, and the base station radio apparatus Is stored in advance by a storage means for storing location information, a GPS reception means for receiving radio waves from a GPS (Global Positioning System) satellite, and a mobile station radio device acquiring existing location information, and a GPS reception means. The distance between the mobile station radio apparatus and the base station radio apparatus is calculated from the acquired position information of the mobile station radio apparatus and the position information of the base station radio apparatus stored in the storage means, and captured based on the distance. And determining means for determining a base station radio apparatus.

本発明によると、移動局無線装置と基地局無線装置との間で通信を行う無線通信システムにおける移動局無線装置であって、記憶手段は基地局無線装置が設置されている位置情報を予め記憶し、GPS受信手段はGPS(Global Positioning System)衛星からの電波を受信して移動局無線装置が現存する位置情報を取得し、決定手段はGPS受信手段によって取得された移動局無線装置の位置情報と記憶手段に記憶されている基地局無線装置の位置情報とから、移動局無線装置と基地局無線装置との距離を算出して距離に基づいて捕捉する基地局無線装置を決定するため、バッテリーセービングの効率を向上させることによって省電力化を図って長時間の稼動を可能とするとともに、空間の利用効率を向上させることができる。   According to the present invention, a mobile station radio apparatus in a radio communication system that performs communication between a mobile station radio apparatus and a base station radio apparatus, the storage means stores in advance position information where the base station radio apparatus is installed. The GPS receiving means receives radio waves from a GPS (Global Positioning System) satellite and acquires the position information of the mobile station radio apparatus, and the determining means is the position information of the mobile station radio apparatus acquired by the GPS receiving means. And calculating the distance between the mobile station radio apparatus and the base station radio apparatus from the position information of the base station radio apparatus stored in the storage means and determining the base station radio apparatus to be captured based on the distance, the battery By improving the efficiency of saving, it is possible to save power and operate for a long time, and to improve the space utilization efficiency. You can.

本発明の実施形態について、図面に基づいて以下に説明する。   Embodiments of the present invention will be described below with reference to the drawings.

〈実施形態1〉
図1は、本発明の実施形態1による無線通信システムの概略構成図である。図1に示すように、移動局無線装置11aは基地局無線装置12aの無線通信が可能な通信エリア15a内に位置し、移動局無線装置11bは基地局無線装置12bの無線通信が可能な通信エリア15b内に位置している。ここで、移動局無線装置11aおよび11bは、例えばバッテリー駆動の携帯型の無線機などであり、基地局無線装置12aおよび12bは、例えばビルの屋上や山上などに固定設置される。制御局13は、基地局無線装置12aおよび12bの通信管理や監視制御を行っている。移動局無線装置11aおよび11bは、GPS衛星14からの電波を受信することが可能である。
<Embodiment 1>
FIG. 1 is a schematic configuration diagram of a radio communication system according to Embodiment 1 of the present invention. As shown in FIG. 1, the mobile station radio device 11a is located in a communication area 15a where radio communication with the base station radio device 12a is possible, and the mobile station radio device 11b is communication capable of radio communication with the base station radio device 12b. It is located in the area 15b. Here, the mobile station radio devices 11a and 11b are, for example, battery-powered portable radio devices, and the base station radio devices 12a and 12b are fixedly installed, for example, on the roof of a building or on a mountain. The control station 13 performs communication management and monitoring control of the base station radio apparatuses 12a and 12b. The mobile station radio devices 11 a and 11 b can receive radio waves from the GPS satellite 14.

図2は、本発明の実施形態1による移動局無線装置11a、11bのブロック図である。図2では、移動局無線装置11a、11bと基地局無線装置12a、12bとの間で通信を行う無線通信システムにおける移動局無線装置11a、11bを示している。表示操作部22は移動局無線装置11a、11bの状態を表示したり、無線通信などのデータ設定を行い、外部I/F部23は外部装置を接続するためのインターフェース部である。メモリ24(記憶手段)は、例えば基地局無線装置12a、12bが設置されている位置情報などの情報を予め記憶している。マイク部26から入力された音声信号は、音声増幅部25で増幅されて音声符号化復号化部29にて無線区間を伝送するためにデジタル変換して符号化される。無線区間を介して伝送されてきたデジタルデータである音声データは、音声符号化復号化部29にて複合化され、音声増幅部28で増幅されてスピーカ部27を鳴動させる。   FIG. 2 is a block diagram of the mobile station radio apparatuses 11a and 11b according to Embodiment 1 of the present invention. FIG. 2 shows the mobile station radio devices 11a and 11b in a radio communication system that performs communication between the mobile station radio devices 11a and 11b and the base station radio devices 12a and 12b. The display operation unit 22 displays the status of the mobile station radio devices 11a and 11b and sets data such as radio communication. The external I / F unit 23 is an interface unit for connecting an external device. The memory 24 (storage means) stores in advance information such as position information where the base station radio apparatuses 12a and 12b are installed, for example. The audio signal input from the microphone unit 26 is amplified by the audio amplifying unit 25 and digitally converted and encoded by the audio encoding / decoding unit 29 for transmission in the wireless section. The audio data, which is digital data transmitted through the wireless section, is combined by the audio encoding / decoding unit 29 and amplified by the audio amplifying unit 28 to cause the speaker unit 27 to ring.

送信信号処理部30は、音声符号化復号化部29にてデジタル変換して符号化された音声信号を無線区間伝送用に変更し、無線送信部31によって無線区間に送信する。無線受信部34は、無線区間を介して送信されてきた信号を受信し、受信信号処理部35にてデジタルデータに変換する。アンテナ分配器32は送信信号と受信信号とを分け、周波数生成部33は送信周波数または受信周波数を生成する。アンテナ38は基地局無線装置との間において無線信号を送受信する。GPSアンテナ36はGPS衛星14からの電波を受信し、受信した電波はGPS受信機37(GPS受信手段)にて移動局無線装置11a、11bが現存する位置情報に変換されてCPU21に通知する。CPU21(決定手段)は、GPS受信機37によって取得された移動局無線装置11a、11bの位置情報とメモリ24に記憶されている基地局無線装置12a、12bとの距離を算出し、距離に基づいて捕捉する基地局無線装置12a、12bを決定する。   The transmission signal processing unit 30 changes the voice signal that has been digitally converted and encoded by the voice encoding / decoding unit 29 for wireless section transmission, and the wireless transmission section 31 transmits the voice signal to the wireless section. The wireless reception unit 34 receives a signal transmitted via a wireless section, and converts it into digital data by a reception signal processing unit 35. The antenna distributor 32 separates the transmission signal and the reception signal, and the frequency generator 33 generates a transmission frequency or a reception frequency. The antenna 38 transmits and receives radio signals to and from the base station radio apparatus. The GPS antenna 36 receives radio waves from the GPS satellite 14, and the received radio waves are converted into position information existing by the mobile station radio devices 11 a and 11 b by a GPS receiver 37 (GPS receiving means) and notified to the CPU 21. The CPU 21 (determining means) calculates the distance between the position information of the mobile station radio devices 11a and 11b acquired by the GPS receiver 37 and the base station radio devices 12a and 12b stored in the memory 24, and based on the distance. The base station radio apparatuses 12a and 12b to be captured are determined.

次に、移動局無線装置11a、11bにおける動作について説明する。本実施形態1では、例えば、移動局無線装置11aが基地局無線装置12aの通信エリア15aから、通信エリア15aと基地局無線装置12bの通信エリア15bとが重なるエリアに移動した場合について説明する。   Next, operations in the mobile station radio apparatuses 11a and 11b will be described. In the first embodiment, for example, a case will be described in which the mobile station radio device 11a moves from the communication area 15a of the base station radio device 12a to an area where the communication area 15a and the communication area 15b of the base station radio device 12b overlap.

図3は、本発明の実施形態1によるバッテリーセービングのタイミングを示す図である。図3に示すように、移動局無線装置11aにおいて、CPU21は間欠受信タイミング(無線受信部34の電源がON)にて周波数生成部33に対して受信周波数を生成するように指示し、無線受信部34および受信信号処理部35が受信可能となるように制御する。受信したデータは、アンテナ部38、アンテナ分配器32、無線受信部34、受信信号処理部35を経てCPU21に通知される。一方、データを受信すると同時に、間欠受信タイミングでGPSアンテナ36からGPS衛星14からの電波を受信し、GPS受信機37にて受信した電波から移動局無線装置11aの現在の位置(緯度経度)情報に変換してCPU21に通知する。   FIG. 3 is a diagram illustrating the timing of battery saving according to the first embodiment of the present invention. As shown in FIG. 3, in the mobile station radio apparatus 11a, the CPU 21 instructs the frequency generation unit 33 to generate a reception frequency at intermittent reception timing (the power of the radio reception unit 34 is ON), and performs radio reception. The unit 34 and the reception signal processing unit 35 are controlled so as to be receivable. The received data is notified to the CPU 21 via the antenna unit 38, the antenna distributor 32, the wireless reception unit 34, and the reception signal processing unit 35. On the other hand, at the same time as receiving data, the radio wave from the GPS satellite 14 is received from the GPS antenna 36 at the intermittent reception timing, and the current position (latitude and longitude) information of the mobile station radio device 11a from the radio wave received by the GPS receiver 37. To the CPU 21.

図4は、本発明の実施形態1による移動局無線装置11a、11bにおける処理のフローチャートである。図4に示すように、移動局無線装置11aのCPU21では、ステップS41においてGPS衛星14から取得した位置情報を受信する。ステップS42では、メモリ24に記憶されている基地局無線装置12a、12bの位置情報に基づいて、移動局無線装置11aと基地局無線装置12a、12bの各々との距離を計算する。ステップS43において、移動局無線装置11aと現在捕捉中の基地局無線装置12aとの距離が一番近ければ基地局無線装置12aとの通信を保ったまま処理を終了する。一方、基地局無線装置12bとの距離の方が近い場合には、ステップS44にて、一番近い基地局無線装置12bに捕捉対象を変更して処理を終了する。   FIG. 4 is a flowchart of processing in the mobile station radio apparatuses 11a and 11b according to Embodiment 1 of the present invention. As shown in FIG. 4, the CPU 21 of the mobile station radio device 11a receives the position information acquired from the GPS satellite 14 in step S41. In step S42, the distance between the mobile station radio apparatus 11a and each of the base station radio apparatuses 12a and 12b is calculated based on the position information of the base station radio apparatuses 12a and 12b stored in the memory 24. In step S43, if the distance between the mobile station radio apparatus 11a and the currently captured base station radio apparatus 12a is the shortest, the process ends while maintaining communication with the base station radio apparatus 12a. On the other hand, if the distance to the base station radio apparatus 12b is shorter, the acquisition target is changed to the closest base station radio apparatus 12b in step S44, and the process ends.

図5は、本発明の実施形態1による移動局無線装置11a、11bのメモリ24に記憶されている基地局無線装置12a、12bの情報を示す図である。図5に示すように、メモリ24は、基地局無線装置12a、12bの位置情報だけでなく基地局無線装置12a、12bごとの送受信周波数を記憶し、送受信周波数をCPU21によって決定された基地局無線装置に合わせる。   FIG. 5 is a diagram showing information of the base station radio devices 12a and 12b stored in the memory 24 of the mobile station radio devices 11a and 11b according to Embodiment 1 of the present invention. As shown in FIG. 5, the memory 24 stores not only the position information of the base station radio apparatuses 12 a and 12 b but also the transmission and reception frequencies of the base station radio apparatuses 12 a and 12 b, and the base station radio determined by the CPU 21. Adapt to the device.

なお、本実施形態では、基地局無線装置12aおよび12bについて述べたが、その他の複数の基地局無線装置に対しても上記と同様の効果が得られる。   In the present embodiment, the base station radio apparatuses 12a and 12b have been described, but the same effects as described above can be obtained for a plurality of other base station radio apparatuses.

以上のことから、捕捉対象以外の基地局無線装置の受信入力電圧を測定することなく、常に最適な基地局無線装置に切り替えることが可能となる。また、間欠受信タイミングで基地局無線装置からのデータとGPS衛星からの位置情報とを同時に受信するため、バッテリーセービングの効率が向上して省電力化が図れるとともに、長時間の稼動が可能となる。   From the above, it is possible to always switch to the optimum base station radio apparatus without measuring the received input voltage of the base station radio apparatus other than the capture target. In addition, since data from the base station radio device and position information from GPS satellites are received simultaneously at intermittent reception timing, battery saving efficiency is improved, power saving is achieved, and long-time operation is possible. .

〈実施形態2〉
本実施形態2では、基地局無線装置からの受信入力電圧が予め定められた所定の受信入力電圧以下になったときにGPS受信機37およびCPU21を動作させ、最適な基地局無線装置に切り替えることを特徴とする。
<Embodiment 2>
In the second embodiment, the GPS receiver 37 and the CPU 21 are operated when the reception input voltage from the base station radio apparatus becomes equal to or lower than a predetermined reception input voltage, and the radio base station radio apparatus is switched to the optimum base station radio apparatus. It is characterized by.

図6は、本発明の実施形態2による無線通信システムの概略構成図である。図6に示すように、品質低下開始エリア16a、16bは、それぞれ通信エリア15a、15b内の通信状態の品質が低下し始めるエリアを示しており、当該エリアは移動局無線装置11a、11bにて測定される基地局無線装置からの受信入力電圧によって識別される。その他の構成は実施形態1と同様であるため、ここでは説明を省略する。また、本実施形態2では、実施形態1と同様に、例えば、移動局無線装置11aが基地局無線装置12aの通信エリア15aから、通信エリア15aと基地局無線装置12bの通信エリア15bとが重なるエリアに移動した場合について説明する。   FIG. 6 is a schematic configuration diagram of a radio communication system according to Embodiment 2 of the present invention. As shown in FIG. 6, the quality deterioration start areas 16a and 16b indicate areas where the quality of the communication state in the communication areas 15a and 15b starts to decrease, and the areas are the mobile station radio apparatuses 11a and 11b. It is identified by the received input voltage from the base station radio device to be measured. Since other configurations are the same as those of the first embodiment, description thereof is omitted here. In the second embodiment, as in the first embodiment, for example, the mobile station radio device 11a overlaps the communication area 15a of the base station radio device 12a with the communication area 15a and the communication area 15b of the base station radio device 12b. The case where it moved to an area is demonstrated.

図7は、本発明の実施形態2によるバッテリーセービングのタイミングを示す図である。図7に示すように、移動局無線装置11aにおいて、CPU21は間欠受信タイミングにて周波数生成部33に対して受信周波数を生成するように指示し、無線受信部34および受信信号処理部35が受信可能となるように制御する。受信したデータは、アンテナ部38、アンテナ分配器32、無線受信部34、受信信号処理部35を経てCPU21に通知される。一方、データを受信すると同時に、間欠受信タイミングで無線受信部34にて検出された受信入力電圧を測定する。測定の結果、予め定められた所定の受信入力電圧以下となった場合にのみ、GPSアンテナ36によってGPS衛星14から送信されるデータを受信する。GPS衛星14からデータを受信した後の処理方法は、実施形態1と同様である。   FIG. 7 is a diagram illustrating the timing of battery saving according to the second embodiment of the present invention. As shown in FIG. 7, in the mobile station radio apparatus 11a, the CPU 21 instructs the frequency generation unit 33 to generate a reception frequency at the intermittent reception timing, and the radio reception unit 34 and the reception signal processing unit 35 receive signals. Control as possible. The received data is notified to the CPU 21 via the antenna unit 38, the antenna distributor 32, the wireless reception unit 34, and the reception signal processing unit 35. On the other hand, simultaneously with the reception of data, the reception input voltage detected by the wireless reception unit 34 is measured at the intermittent reception timing. As a result of the measurement, data transmitted from the GPS satellite 14 is received by the GPS antenna 36 only when the voltage is equal to or lower than a predetermined reception input voltage. The processing method after receiving data from the GPS satellite 14 is the same as in the first embodiment.

以上のことから、実施形態1よりもGPS衛星14からデータを受信して距離を計算する処理の頻度が減少するため、さらにバッテリーセービングの効率を向上させて省電力化が図れるとともに、長時間の稼動が可能となる。   From the above, since the frequency of processing to receive data from the GPS satellite 14 and calculate the distance is reduced as compared with the first embodiment, it is possible to further improve the battery saving efficiency to save power and to save power for a long time. Operation becomes possible.

〈実施形態3〉
図8は、本発明の実施形態3による移動局無線装置11aと移動局無線装置11bと間での通信を示す図である。本実施形態3では、移動局無線装置11a、11b間において通信を行うことが可能な移動局無線装置11a、11bであって、GPS受信機37(GPS取得手段)はGPS衛星14からの電波を受信して移動局無線装置11a、11bが現存する位置情報を取得し、CPU21は自局および通信相手局のGPS受信機37によって取得された自局および通信相手局の位置情報から算出した互いの距離に基づいて自局の送信出力を設定する。
<Embodiment 3>
FIG. 8 is a diagram illustrating communication between the mobile station radio apparatus 11a and the mobile station radio apparatus 11b according to Embodiment 3 of the present invention. In the third embodiment, the mobile station radio devices 11a and 11b can communicate between the mobile station radio devices 11a and 11b, and the GPS receiver 37 (GPS acquisition means) transmits radio waves from the GPS satellite 14. The mobile station wireless devices 11a and 11b receive the received location information and the CPU 21 calculates the mutual information calculated from the location information of the local station and the communication partner station acquired by the GPS receiver 37 of the local station and the communication partner station. Set the transmission output of your station based on the distance.

図9は、本発明の実施形態3による移動局無線装置11aと移動局無線装置11bとの間での処理を示すフローチャートである。ステップS90では、移動局無線装置11aは、移動局無線装置11bに対して通信開始要求を送信するとともに、GPS受信機37にて変換された自局の位置情報を送信する。ステップS91において、移動局無線装置11bは、移動局無線装置11aからの通信開始要求および位置情報を受信する。ステップS92では、移動局無線装置11bは、GPS衛星14から取得してGPS受信機37にて変換された自局の位置情報をCPU21に通知する。そして、CPU21は、通知された時局の位置情報と受信した移動局無線装置11aの位置情報とから、自局と移動局無線装置11aとの距離を算出する。ステップS93では、算出した距離に基づいて、移動局無線装置11aに対する最適な送信出力を設定する。最適な送信出力の設定は、図10に示すように、距離と送信出力との関係として予め記憶されており、ステップS92にて算出されて距離に基づいて最適な送信出力が決定される。そして、ステップS94において、移動局無線装置11aに対して通信開始応答および自局の位置情報を最適な送信出力で送信する。   FIG. 9 is a flowchart showing processing between the mobile station radio apparatus 11a and the mobile station radio apparatus 11b according to Embodiment 3 of the present invention. In step S90, the mobile station radio apparatus 11a transmits a communication start request to the mobile station radio apparatus 11b and transmits the position information of the local station converted by the GPS receiver 37. In step S91, the mobile station radio device 11b receives a communication start request and position information from the mobile station radio device 11a. In step S92, the mobile station wireless device 11b notifies the CPU 21 of the position information of the own station acquired from the GPS satellite 14 and converted by the GPS receiver 37. Then, the CPU 21 calculates the distance between the local station and the mobile station radio device 11a from the notified location information of the time station and the received location information of the mobile station radio device 11a. In step S93, the optimum transmission output for the mobile station radio device 11a is set based on the calculated distance. As shown in FIG. 10, the optimum transmission output setting is stored in advance as a relationship between the distance and the transmission output, and is calculated in step S92 to determine the optimum transmission output based on the distance. In step S94, the communication start response and the position information of the own station are transmitted to the mobile station radio apparatus 11a with an optimal transmission output.

ステップS95において、移動局無線装置11aは、移動局無線装置11bからの通信開始応答および移動局無線装置11bの位置情報を受信する。ステップS96では、移動局無線装置11aは、GPS衛星14から取得してGPS受信機37にて変換された自局の位置情報と受信した移動局無線装置11bの位置情報とから、自局と移動局無線装置11bとの距離を算出する。ステップS97では、算出した距離に基づいて、移動局無線装置11bに対する最適な送信出力を設定する。そして、ステップS98において、移動局無線装置11bに対して通信データおよび自局の位置情報を最適な送信出力で送信する。   In step S95, the mobile station radio device 11a receives the communication start response from the mobile station radio device 11b and the position information of the mobile station radio device 11b. In step S96, the mobile station radio device 11a moves from its own location and mobile station radio device 11b based on the location information of the mobile station radio device 11b acquired from the GPS satellite 14 and converted by the GPS receiver 37. The distance from the station radio device 11b is calculated. In step S97, an optimum transmission output for the mobile station radio apparatus 11b is set based on the calculated distance. In step S98, the communication data and the position information of the own station are transmitted to the mobile station radio apparatus 11b with an optimal transmission output.

ステップS99において、移動局無線装置11bは、移動局無線装置11aからの通信データおよび位置情報を受信する。以下の処理はステップS92からステップS94と同様であり、上記の処理を通信が終了するまで繰り返す。   In step S99, the mobile station radio device 11b receives communication data and position information from the mobile station radio device 11a. The following processing is the same as that from step S92 to step S94, and the above processing is repeated until communication is completed.

以上のことから、基地局無線装置を介さずに移動局無線装置間で通信を行う場合において、通信距離に応じて送信出力を調整することができるため、各移動局無線装置の省電力化が図れる。また、通信に関係のないエリアにまで電波が及ばないため、空間の利用効率を向上させることが可能である。   From the above, when communication is performed between mobile station radio apparatuses without going through the base station radio apparatus, the transmission output can be adjusted according to the communication distance. I can plan. In addition, since radio waves do not reach an area unrelated to communication, it is possible to improve space utilization efficiency.

本発明の実施形態1による無線通信システムの概略構成図である。It is a schematic block diagram of the radio | wireless communications system by Embodiment 1 of this invention. 本発明の実施形態1による移動局無線装置のブロック図である。It is a block diagram of the mobile station radio | wireless apparatus by Embodiment 1 of this invention. 本発明の実施形態1によるバッテリーセービングのタイミングを示す図である。It is a figure which shows the timing of the battery saving by Embodiment 1 of this invention. 本発明の実施形態1による移動局無線装置における処理のフローチャートである。It is a flowchart of the process in the mobile station radio | wireless apparatus by Embodiment 1 of this invention. 本発明の実施形態1による移動局無線装置のメモリに記憶されている基地局無線装置の情報を示す図である。It is a figure which shows the information of the base station radio | wireless apparatus memorize | stored in the memory of the mobile station radio | wireless apparatus by Embodiment 1 of this invention. 本発明の実施形態2による無線通信システムの概略構成図である。It is a schematic block diagram of the radio | wireless communications system by Embodiment 2 of this invention. 本発明の実施形態2によるバッテリーセービングのタイミングを示す図である。It is a figure which shows the timing of the battery saving by Embodiment 2 of this invention. 本発明の実施形態3による移動局無線装置間での通信を示す図である。It is a figure which shows the communication between the mobile station radio | wireless apparatuses by Embodiment 3 of this invention. 本発明の実施形態3による移動局無線装置間での処理を示すフローチャートである。It is a flowchart which shows the process between the mobile station radio | wireless apparatuses by Embodiment 3 of this invention. 本発明の実施形態3による移動局無線装置間における距離と送信出力との関係を示す図である。It is a figure which shows the relationship between the distance between the mobile station radio | wireless apparatuses by Embodiment 3 of this invention, and transmission output.

符号の説明Explanation of symbols

11a、11b 移動局無線装置、12a、12b 基地局無線装置、13 制御局、14 GPS衛星、15a、15b 通信エリア、16a、16b 品質低下開始エリア、21 CPU、22 表示操作部、23 外部I/F部、24 メモリ、25 音声増幅部、26 マイク部、27 スピーカー部、28 音声増幅部、29 音声符号化復号化部、30 送信信号処理部、31 無線送信部、32 アンテナ分配器、33 周波数生成部、34 無線受信部、35 受信信号処理部、36 GPSアンテナ、37 GPS受信機、38 アンテナ。   11a, 11b Mobile station radio equipment, 12a, 12b Base station radio equipment, 13 Control station, 14 GPS satellite, 15a, 15b Communication area, 16a, 16b Quality degradation start area, 21 CPU, 22 Display operation section, 23 External I / F unit, 24 memory, 25 audio amplifying unit, 26 microphone unit, 27 speaker unit, 28 audio amplifying unit, 29 audio encoding / decoding unit, 30 transmission signal processing unit, 31 wireless transmission unit, 32 antenna distributor, 33 frequency Generation unit, 34 wireless reception unit, 35 reception signal processing unit, 36 GPS antenna, 37 GPS receiver, 38 antenna.

Claims (4)

移動局無線装置と基地局無線装置との間で通信を行う無線通信システムにおける移動局無線装置であって、
前記基地局無線装置が設置されている位置情報を予め記憶する記憶手段と、
GPS(Global Positioning System)衛星からの電波を受信し、前記移動局無線装置が現存する位置情報を取得するGPS受信手段と、
前記GPS受信手段によって取得された前記移動局無線装置の位置情報と前記記憶手段に記憶されている前記基地局無線装置の位置情報とから、前記移動局無線装置と前記基地局無線装置との距離を算出し、前記距離に基づいて捕捉する前記基地局無線装置を決定する決定手段と、
を備える、移動局無線装置。
A mobile station radio apparatus in a radio communication system that performs communication between a mobile station radio apparatus and a base station radio apparatus,
Storage means for storing in advance location information where the base station wireless device is installed;
GPS receiving means for receiving radio waves from a GPS (Global Positioning System) satellite and acquiring location information of the mobile station radio device;
The distance between the mobile station radio device and the base station radio device from the location information of the mobile station radio device acquired by the GPS receiver and the location information of the base station radio device stored in the storage means Determining means for determining the base station radio apparatus to be captured based on the distance;
A mobile station radio apparatus.
前記基地局無線装置からの受信入力電圧が予め定められた所定の受信入力電圧以下になったときに前記GPS受信手段および前記決定手段を動作させることを特徴とする、請求項1に記載の移動局無線装置。   2. The movement according to claim 1, wherein the GPS reception unit and the determination unit are operated when a reception input voltage from the base station radio apparatus is equal to or lower than a predetermined reception input voltage. Station radio equipment. 前記記憶手段は、前記基地局無線装置ごとの送受信周波数をさらに記憶し、
前記決定手段によって決定された前記基地局無線装置に前記送受信周波数を合わせることを特徴とする、請求項1または請求項2に記載の移動局無線装置。
The storage means further stores a transmission / reception frequency for each base station radio device,
3. The mobile station radio apparatus according to claim 1, wherein the transmission / reception frequency is matched with the base station radio apparatus determined by the determination unit. 4.
移動局無線装置間において通信を行うことが可能な移動局無線装置であって、
GPS衛星からの電波を受信し、前記移動局無線装置が現存する位置情報を取得するGPS受信手段と、
自局および通信相手局の前記GPS受信手段によって取得された自局および通信相手局の位置情報から互いの距離を算出し、前記距離に基づいて自局の送信出力を設定する手段と、
を備える、移動局無線装置。
A mobile station radio device capable of communicating between mobile station radio devices,
GPS receiving means for receiving radio waves from a GPS satellite and acquiring the existing position information of the mobile station radio device;
Means for calculating the mutual distance from the position information of the local station and the communication partner station acquired by the GPS receiving unit of the local station and the communication partner station, and setting the transmission output of the local station based on the distance;
A mobile station radio apparatus.
JP2008107491A 2008-04-17 2008-04-17 Mobile station radio apparatus Pending JP2009260677A (en)

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JP2002369237A (en) * 2001-06-07 2002-12-20 Sanyo Electric Co Ltd Mobile communication terminals equipment
JP2004120109A (en) * 2002-09-24 2004-04-15 Hitachi Kokusai Electric Inc Radio communication system
JP2004134951A (en) * 2002-10-09 2004-04-30 Sanyo Electric Co Ltd Radio communication apparatus
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Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0884363A (en) * 1994-09-09 1996-03-26 Canon Inc Mobile communication system
JP2002291014A (en) * 2001-03-26 2002-10-04 Hitachi Kokusai Electric Inc Mobile station radio channel switching system
JP2002369237A (en) * 2001-06-07 2002-12-20 Sanyo Electric Co Ltd Mobile communication terminals equipment
JP2004120109A (en) * 2002-09-24 2004-04-15 Hitachi Kokusai Electric Inc Radio communication system
JP2004134951A (en) * 2002-10-09 2004-04-30 Sanyo Electric Co Ltd Radio communication apparatus
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