JP3715197B2 - Power saving mode transition process and restarting method of the wireless communication system - Google Patents

Power saving mode transition process and restarting method of the wireless communication system Download PDF

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JP3715197B2
JP3715197B2 JP2000353359A JP2000353359A JP3715197B2 JP 3715197 B2 JP3715197 B2 JP 3715197B2 JP 2000353359 A JP2000353359 A JP 2000353359A JP 2000353359 A JP2000353359 A JP 2000353359A JP 3715197 B2 JP3715197 B2 JP 3715197B2
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station
base station
terminal
saving mode
intermittent
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JP2002158609A (en
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裕史 矢村
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三菱電機株式会社
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0203Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H04W52/0206Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
    • 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 THIR OWN ENERGY USE
    • Y02D70/00Techniques for reducing energy consumption in wireless communication networks

Abstract

PROBLEM TO BE SOLVED: To obtain a power-saving mode transit method and a restart method for a wireless communication system, with which the energy of the entire system can be saved. SOLUTION: A base station 1 transmits a power-saving mode transition instructions to terminal stations 2, the terminal stations 2, receiving the instruction, shift to intermittent reception after transmitting the state of the own stations and confirmation of the shift instruction to the base station, the base station 1 receiving the state of the terminal stations and the transition instruction confirmation intermittently transmits notice information with the timing of the intermittent reception of the terminal stations 2, and shifts to the intermittent reception for accepting a system restart request from the terminal stations.

Description

【0001】 [0001]
【発明の属する技術分野】 BACKGROUND OF THE INVENTION
この発明はTDMA(時分割多元接続方式)無線通信システムにおける省電力化に係り、特に無線通信システムの省電力モード移行方法および再起動方法に関するものである。 This invention relates to power saving in TDMA (time division multiple access scheme) wireless communication system, and more particularly to a power saving mode transition process and restart method for a wireless communication system.
【0002】 [0002]
【従来の技術】 BACKGROUND OF THE INVENTION
従来のTDMA無線通信システムでは、基地局は常時連続送受信を行っている。 In a conventional TDMA wireless communication system, the base station makes constant continuous transmission and reception. また、移動局の消費電力低減を図る方法としては、例えば特開平7−22998号公報に記載されているように、移動局が基地局からの報知情報を連続受信せずに、スーパーフレーム間隔で間欠受信する等の方法が提案されている。 Further, as a method to reduce the power consumption reduction of the mobile station, for example, as described in JP-A-7-22998, the mobile station without continuous receives broadcast information from the base station, a super frame interval method such as discontinuous reception has been proposed.
【0003】 [0003]
図9は従来のTDMA無線通信システムの構成を示す構成図である。 Figure 9 is a block diagram showing a configuration of a conventional TDMA radio communication system.
図において、1は基地局、2は移動局である。 In FIG, 1 is a base station, 2 is a mobile station. 基地局1は、下り制御チャネルを使って常時移動局2に対して制御情報を連続送信している。 The base station 1 is in the continuous transmission control information to always mobile station 2 using the downlink control channel. また、移動局2からの発呼要求を受け付けるため、基地局1は常に連続受信状態におかれている。 Furthermore, for receiving a call request from the mobile station 2, the base station 1 is always placed in the continuous reception state. 移動局2は、少なくとも基地局1からの呼出信号、すなわち、ページングが送信されるタイミングにだけ受信動作を行い、その他の時間は非受信状態におかれるようになっている。 Mobile station 2, the call signals from at least the base station 1, i.e., performs only reception operation timing of the paging is transmitted, other time is adapted to be placed in a non-receiving state. したがって、このような間欠受信を行うことにより、移動局2は受信機部分の消費電力低減を図っている。 Therefore, by performing such intermittent reception, the mobile station 2 is attempted to reduce power consumption of the receiver portion.
【0004】 [0004]
図10は、上述の移動局2の間欠受信を説明するための下り制御チャネルのフレーム構成例を示す。 Figure 10 shows a frame configuration example of a downlink control channel to explain the intermittent reception of the mobile station 2 described above. 基地局1は、制御チャネルを使用してフレーム毎に制御情報を送信する。 The base station 1 transmits the control information for each frame using a control channel. 制御情報には、報知情報BCCH、ページングPCH、その他様々なものが含まれている。 The control information includes broadcast information BCCH, paging PCH, other includes various ones. この下り制御チャネルの構成は、フレーム毎に送信される制御スロットを順に並べたもので、スーパーフレームで一つの制御情報を構成している。 The configuration of the downlink control channel, which was arranged control slots is transmitted every frame in order to constitute one of the control information in a superframe. 移動局2は、少なくともページングPCHを受信できればよく、省電力状態にあるときにスーパーフレームの先頭で受信機部の電源をオンにして受信動作を開始し、ページングPCHの終了時に電源をオフにして再び省電力状態に戻る電源制御方法を行っている。 Mobile station 2, it is sufficient receive at least paging PCH, reception is started by turning on the receiver portion at the head of the super frame when in the power saving state, when the power is turned off at the end of the paging PCH doing power control method returns to the power saving state again.
【0005】 [0005]
【発明が解決しようとする課題】 [Problems that the Invention is to Solve
従来のTDMA無線通信システムの省電力モード移行方法は、以上のように構成されているが、基地局1は連続送受信状態におかれるようになっていた。 Power-saving mode transition process of a conventional TDMA radio communication system is configured as described above, the base station 1 was adapted to be placed in a continuous reception state. これは、携帯電話のような民需用システムにおいては当然の条件として有効である。 This is because in civilian systems, such as a mobile phone is effective as a natural condition. しかし公共の業務用や防災行政用システム等では、時間帯等によっては回線使用率が下がるため、常にシステムを定常状態で稼動しておく必要はない。 However, in public business and disaster prevention administrative for the system, such as, for line usage rate is lowered by the time band, or the like, it is not always necessary to run the system in a steady state. また、基地局や中継局は、大電力で送信するため、常時連続送信を行うことは効率が悪い。 The base station and relay station, to transmit a large power, it is inefficient to perform continuous transmission at all times. 特に、災害時等におけるバッテリー使用においては、バッテリーの急激な消耗を招くなどの課題があった。 In particular, in a battery for use in disaster or the like, there is a problem, such as lead to a rapid depletion of the battery.
【0006】 [0006]
この発明は上記のような課題を解決するためになされたもので、システム全体の省エネルギー化を図ることができる無線通信システムの省電力モード移行方法および再起動方法を得ることを目的とする。 The present invention has been made to solve the above problems, an object of the present invention to provide a power-saving mode transition process and restarting method of a wireless communication system capable of achieving energy saving of the entire system.
【0007】 [0007]
【課題を解決しようとする手段】 [Means to try to solve the problem]
この発明に係る無線通信システムの省電力モード移行方法は、基地局および複数の端末局から構成されるTDMA無線通信システムにおいて、基地局が複数の端末局に対して省電力モード移行指示を送信し、この省電力モード移行指示を受信した端末局が自局状態および移行指示確認を基地局に送信した後間欠受信動作に移り、端末局の自局状態および移行指示確認を受信した基地局が報知情報の連続送信を端末局の間欠受信動作のタイミングと一致する間欠送信動作に切り換えると共に間欠受信動作に移るようにしたものである。 Power-saving mode transition method of a wireless communication system according to the present invention is a base station and TDMA wireless communication system including a plurality of terminal stations, the base station transmits a power-saving mode transition instruction to a plurality of terminal stations the power-saving mode transition instruction terminal station receiving is shifted to an intermittent reception operation after sending the own station state and transition instruction checking the base station, local station state and transition instruction base station having received the confirmation notification of the terminal station is obtained as shifted to an intermittent reception operation switches the continuous transmission of information to the intermittent transmission operation to match the timing of the intermittent reception operation of a terminal station.
【0008】 [0008]
この発明に係る無線通信システムの省電力モード移行方法は、省電力モードにあることを端末局が認識できるパラメータを基地局から間欠送信される報知情報に含めて送信し、端末局が報知情報を受信したときからでも省電力モードの間欠受信動作に移れるようにしたものである。 Power-saving mode transition method of a wireless communication system according to the present invention, that it is in the power saving mode sends included in broadcast information intermittently transmitted from the base station parameters the terminal station can recognize the terminal station broadcast information it is obtained as Utsureru the intermittent receiving operation of the power saving mode even from the time it receives.
【0009】 [0009]
この発明に係る無線通信システムの再起動方法は、基地局および複数の端末局から構成されるTDMA無線通信システムにおいて、基地局が複数の端末局に対して省電力モード移行指示を送信し、この省電力モード移行指示を受信した端末局が自局状態および移行指示確認を基地局に送信した後間欠受信動作に移り、端末局の自局状態および移行指示確認を受信した基地局が報知情報の連続送信を端末局の間欠受信動作のタイミングと一致する間欠送信動作に切り換えると共に間欠送受信動作に移って省電力モードを形成し、基地局が複数の端末局に対して所定の期間にシステム再起動指示を端末局の間欠受信動作のタイミングに合わせて送信して連続送受信動作に戻り、端末局が間欠受信動作時にシステム再起動指示を受信して連続受信動 Restart method of a wireless communication system according to the present invention is a base station and TDMA wireless communication system including a plurality of terminal stations, the base station transmits a power-saving mode transition instruction to a plurality of terminal stations, the moved to the intermittent receiving operation after the terminal station has received the power saving mode transition instruction is transmitted to its own station state and transition instruction checking the base station, the local station state and transition instruction checking the base station receiving the broadcast information of the terminal station continuous transmission shifts to the intermittent receiving operation with switching to an intermittent transmission operation to match the timing of the intermittent reception operation of a terminal station to form a power-saving mode, the system re-activated over time the base station to a plurality of terminal stations instructing the return to the continuous reception operation and transmission in accordance with the timing of the intermittent reception operation of the terminal station, continuous reception dynamic terminal station receives the system restart instruction during intermittent receiving operation に戻るようにしたものである。 Is that to return to.
【0010】 [0010]
この発明に係る無線通信システムの再起動方法は、基地局および複数の端末局から構成されるTDMA無線通信システムにおいて、基地局が複数の端末局に対して省電力モード移行指示を送信し、この省電力モード移行指示を受信した端末局が自局状態および移行指示確認を基地局に送信した後間欠受信動作に移り、端末局の自局状態および移行指示確認を受信した基地局が報知情報の連続送信を端末局の間欠受信動作のタイミングと一致する間欠送信動作に切り換えると共に間欠送受信動作に移って省電力モードを形成し、複数の端末局のいずれか1局が、基地局の間欠受信動作のタイミングに合わせて発呼のためのシステム再起動要求を基地局に対して送信し、このシステム再起動要求を受信した基地局が間欠受信動作中のすべての端末 Restart method of a wireless communication system according to the present invention is a base station and TDMA wireless communication system including a plurality of terminal stations, the base station transmits a power-saving mode transition instruction to a plurality of terminal stations, the moved to the intermittent receiving operation after the terminal station has received the power saving mode transition instruction is transmitted to its own station state and transition instruction checking the base station, the local station state and transition instruction checking the base station receiving the broadcast information of the terminal station continuous transmission shifts to the intermittent receiving operation with switching to an intermittent transmission operation to match the timing of the intermittent reception operation of a terminal station to form a power-saving mode, either one station of a plurality of terminal stations, the intermittent receiving operation of the base station all terminals sends a system reboot request for call to the base station in accordance with the timing, the base station which has received this system restart request is in the intermittent receiving operation に対してシステム再起動指示を所定の期間内にかつ端末局の間欠受信動作のタイミングに合わせて送信して連続送受信動作に戻り、システム再起動指示を受信した端末局が連続受信動作に戻るようにしたものである。 To respect and the system re-activation instruction within a predetermined period of time by sending in accordance with the timing of the intermittent reception operation of the terminal station returns to the continuous reception operation, the terminal station receiving system restart instruction is returned to the continuous reception operation it is obtained by the.
【0014】 [0014]
【発明の実施の形態】 DETAILED DESCRIPTION OF THE INVENTION
以下、この発明の実施の一形態を説明する。 Hereinafter, an embodiment of the present invention.
実施の形態1. The first embodiment.
図1はこの発明の実施の形態1に係る無線通信システムの構成を示すもので、基地局および複数の移動局で構成される移動系TDMA無線通信システムにおける省電力モード移行方法とシステム再起動方法を説明する。 Figure 1 shows a configuration of a radio communication system according to the first embodiment of the present invention, the power saving mode transition method in the mobile system TDMA radio communication system comprising the base station and a plurality of mobile stations and system restart process It will be described.
【0015】 [0015]
図において、1は基地局、2は移動局(端末局)である。 In FIG, 1 is a base station, 2 is a mobile station (terminal station). 11は基地局1から各移動局2への下り制御チャネルを示し、21は移動局2から基地局1への上り制御チャネルを示す。 11 shows the downlink control channel from the base station 1 to the mobile station 2, 21 denotes an uplink control channel from the mobile station 2 to the base station 1. 定常運用時の基地局1は、下り制御チャネル11を利用して移動局2に報知情報CCHをフレーム毎に送信する連続送信を行う。 The base station 1 during steady-state operation, the continuous transmission for transmitting the broadcast information CCH in each frame to the mobile station 2 by using a downlink control channel 11. 移動局2は上り制御チャネル21を利用して基地局1に対して発呼要求信号すなわち発信無線状態報告を送信する。 Mobile station 2 transmits a call request signal or transmitting a radio status report to the base station 1 by utilizing the uplink control channel 21.
【0016】 [0016]
先ず、図2は省電力モード移行時の接続シーケンスを示すもので、これにより省電力モード移行の動作について説明する。 First, FIG. 2 shows the connection sequence of the power saving mode transition, thereby the operation of the power-saving mode transition.
図において、連続送受信を行う定常状態におかれていた基地局1から移動局2に対して省電力モード移行指示を下り制御チャネル11を利用して送信する。 In the figure, it is transmitted using the power saving mode transition instruction to the downlink control channel 11 to the mobile station 2 from the base station 1 that has been placed in a steady state of continuous transmission and reception. 移動局2は、この省電力モード移行指示を受信すると、直ちに自局状態および移行指示確認を基地局1に送信し、省電力モードに移行して間欠受信動作に切り換わり、基地局1から間欠送信される報知情報CCHを受信するためのCCHサーチを開始する。 Mobile station 2 receives the power-saving mode transition instruction immediately sends the own station state and the transition instruction confirmation to the base station 1 switches to an intermittent receiving operation shifts to the power saving mode, intermittently from the base station 1 It starts CCH search for receiving broadcast information CCH transmitted. ここで、各移動局2からの移行指示確認を受信できるように、基地局1は省電力モード移行指示を送信し続けるが、移動局2からの移行指示確認をすべて受信できなくても、自局のタイマーによるタイムアウトで所定の期間が過ぎると省電力モードに移行する。 Here, to be able to receive shift instruction confirmation from the mobile station 2, the base station 1 continues to transmit the power saving mode transition instruction, even if not receive all of the migration instruction checking from the mobile station 2, the own a predetermined period timeout shifts to the power saving mode and passes by the timer of the station.
【0017】 [0017]
基地局1は、省電力モードの状態において、報知情報CCHを下り制御チャネル11で間欠送信する。 The base station 1 is in the state of power saving mode, intermittently transmits the broadcast information CCH in the downlink control channel 11. これにより、基地局1は大電力で連続送信し続ける必要がなくなるため、消費電力を大幅に低減し、緊急時のバッテリー駆動効率を上げることができる。 Thus, the base station 1 because it must continue to continuously transmit a large power eliminated, power consumption is greatly reduced, it is possible to increase the battery drive efficiency of an emergency.
【0018】 [0018]
また、省電力モードにある基地局1は、移動局2からのシステム再起動要求UW1を受け付けるUW1サーチのために間欠受信を行う。 Further, the base station 1 in the power saving mode, performs intermittent reception for UW1 search for accepting system restart requests UW1 from the mobile station 2. このシステム再起動要求UW1は、移動局2が通信を再開したい場合に、基地局1に対してシステム全体を定常状態に戻すよう要求するために送信されるもので、特定パターンで構成された連続信号である。 Continuous system restart request UW1, when mobile station 2 is to resume communications, intended to be sent to request to return the entire system to a steady state with respect to the base station 1, configured in a particular pattern it is a signal.
従来の基地局では、常時発呼を受け付けるものとして連続受信を行っていたが、実施の形態1では、システム全体を意図的に省電力状態にするため、連続受信を行う必要はない。 In a conventional base station, had been successively received as accepting constantly calling, in the first embodiment, in order to intentionally power saving state the entire system, there is no need to perform continuous reception. 前述の間欠送信に加え、このように間欠受信を行うことで、基地局1の消費電力のさらなる低減を図ることができる。 In addition to the intermittent transmission of the above, by thus performing the intermittent reception, it is possible to further reduce the power consumption of the base station 1.
【0019】 [0019]
一方、移動局2は、基地局1の報知情報CCHの間欠送信タイミングに合わせて、間欠受信すなわちCCHサーチを行うだけで、その他の時間は受信動作を停止しており、消費電力を節減する。 On the other hand, the mobile station 2, in accordance with the intermittent transmission timing of the broadcast information CCH in base station 1, only by performing intermittent reception That CCH search, the other of the time it stops receiving operation, to save power consumption.
ここで、基地局1から間欠送信される報知情報CCHには、システムが省電力モードにあることを移動局2が認識できるためのパラメータが含まれる。 Here, the broadcast information CCH which is intermittently transmitted from the base station 1, the system includes parameters that can be recognized the mobile station 2 is to be in a power saving mode. したがって、システムが省電力モードに入った際に受信状態の不都合や電源を切っていたために、移動局2の中に省電力モード移行指示を受信できなかったものがあった場合、後でこの報知情報CCHを受信することにより省電力モードへと移行するよう動作するようにしている。 Therefore, if the system is to have off inconvenience or power receiving state when entering the power-saving mode, there is what can not be received power saving mode transition instruction in the mobile station 2, later this notification so that operates to transition to the power saving mode by receiving the information CCH.
【0020】 [0020]
図3に、移動局2の要求によりシステム全体が省電力モードから定常状態に戻る動作の接続シーケンスを示す。 Figure 3 shows the connection sequence of operation the entire system returns from the power saving mode to the steady-state response to a request of the mobile station 2.
図において、移動局2のいずれか1局が通信を行うために、先ず基地局1に対してシステム再起動要求UW1を、基地局1の間欠受信動作のタイミングに合わせて送信する。 In the figure, in order to perform either one station of the mobile station 2 is communicating, firstly a system restart requests UW1 to the base station 1, and transmits in accordance with the timing of the intermittent receiving operation of the base station 1. 基地局1は、このシステム再起動要求UW1を受信すると、下り制御チャネル11を利用してすべての移動局2に対してCCHサーチのタイミングでシステム再起動指示を送信する。 The base station 1 receives the system restart request UW1, sends a system reboot instruction at the timing of the CCH search for all of the mobile station 2 by using a downlink control channel 11. 各移動局2はシステム再起動指示を受信すると直ちに連続受信の定常状態に戻る。 Each mobile station 2 returns to the steady state soon continuous reception upon receiving a system restart instruction. また、回線障害などでシステム再起動指示を受信できない移動局2がある場合には、自局のタイマーによるタイムアウトによって定常状態に戻る。 When there is a mobile station 2 can not receive the system restart instruction, etc. line failure is returned to the steady state due to a timeout by the timer of the self station. なお、定常状態に戻った基地局の報知情報に、定常状態であることを知らせるパラメータが含まれている。 Note that the broadcast information of the base station returns to a steady state includes a parameter indicating that a steady state. 次に基地局1は、自局のタイマーのタイムアウトでシステム再起動指示の送信を停止し、連続送受信の定常状態に戻る。 Then the base station 1 stops the transmission system restart instruction by the timer timeout of the own station returns to the steady state continuous transmission and reception. その後、基地局1は報知情報CCHの連続送信を開始し、最初にシステム再起動要求UW1を送った移動局2は発呼要求信号すなわち発信無線状態報告を送信し、通信を再開する。 Thereafter, the base station 1 starts the continuous transmission of the broadcast information CCH, the mobile station 2 that sent the system restart request UW1 first sends a call request signal or transmitting a radio status report, resume communication.
【0021】 [0021]
図4に、基地局1の指示によりシステム全体が省電力モードから定常状態に戻る動作の接続シーケンスを示す。 Figure 4 shows the connection sequence of operation the entire system returns from the power saving mode to the steady state by an instruction of the base station 1.
図において、基地局1はすべての移動局2に対して間欠送信時にシステム再起動指示の送信を行い、各移動局2はこのシステム再起動指示をCCHサーチで受信し、前述と同様の復帰動作を行う。 In the figure, the base station 1 performs transmission system restart instruction during intermittent transmission to all mobile station 2, the mobile station 2 receives the system restart instruction by CCH search, similar to that described above return operation I do. すなわち、各移動局2はシステム再起動指示を受信すると直ちに連続受信の定常状態に戻る。 That is, each mobile station 2 returns to the steady state soon continuous reception upon receiving a system restart instruction. 次に基地局1は、自局のタイマーのタイムアウトでシステム再起動指示の送信を停止し連続送受信の定常状態に戻る。 Then the base station 1 returns to the steady state of the stopped continuously receive the transmission system reboot instruction timeout of a timer of its own station. その後、基地局1は報知情報CCHの連続送信を開始し、通信を再開する状態となる。 Thereafter, the base station 1 starts the continuous transmission of broadcast information CCH, the resume communication.
【0022】 [0022]
以上のように、この実施の形態1によれば、基地局1は、省電力モード時に報知情報CCHを間欠送信する以外には送信を停止させているので、大電力の連続送信が不要となり消費電力を大幅に低減し、緊急時のバッテリー駆動効率を上げることができる効果が得られる。 As described above, according to the first embodiment, the base station 1, since stopping the transmission in addition to intermittently transmit the broadcast information CCH in the power saving mode, consuming unnecessary continuous transmission of high power significantly reduce the power, the effect that can increase the battery driving efficiency emergency can be obtained. また、基地局1は、省電力モード時の受信動作においても、システム再起動要求UW1を受け付けるための間欠受信動作以外には受信動作を停止させているので、省電力化をさらに図れる効果が得られる。 Further, the base station 1, even in the receiving operation in the power saving mode, since stopping the receiving operation in addition to the intermittent receiving operation for receiving a system restart request UW1, obtained further attained effective power saving It is. 一方、移動局2においても、報知情報CCHの間欠送信に対してタイミングを合わせた間欠受信動作以外には送受信動作を行わないようにして省電力化を図れる効果がある。 On the other hand, also in the mobile station 2, other than intermittent receiving operation timed relative to the intermittent transmission of the broadcast information CCH is effective in attained a Separate the receiving operation power saving. したがって、基地局1と移動局2を併せた無線通信システム全体において、多大な電力削減を可能にする効果が得られる。 Accordingly, in the entire wireless communication system in conjunction with the base station 1 and the mobile station 2, the effect of allowing a significant power reduction is obtained.
また、実施の形態1によれば、システムが省電力モードから復帰するために基地局1からの指示による場合と任意の移動局2からの要求による場合のいずれでも不都合なく再起動が行えるので、無線通信システム全体の省電力化に伴う再起動方法として最適なものを提供する効果が得られる。 Further, according to the first embodiment, because the system can be performed without restarting either inconvenience when directed by the request from the case and any mobile station 2 by the base station 1 in order to return from the power saving mode, effect of providing an optimum restart method as due to power saving of the entire radio communication system is obtained.
さらに、システムが省電力モードに入ったときに、基地局1から間欠送信される報知情報CCHに、システムが省電力モードにあることを認識できるパラメータを含めているので、省電力モード移行指示を受信できなかった移動局2があったとしても、その報知情報CCHを受信したときから省電力モードに切り換わることができ、省電力化の動作をより確実なものにする効果がある。 Further, when the system enters the power saving mode, the broadcast information CCH which is intermittently transmitted from the base station 1, because the system has included a parameter that can be recognized that it is in the power saving mode, it instructs the power-saving mode transition even if the mobile station 2 could not receive, the broadcast information CCH can switch from the time it receives the power saving mode, the effect of the operation of the power saving in more reliable.
【0023】 [0023]
実施の形態2. The second embodiment.
図5において、この発明の実施の形態2に係る無線通信システムのを示すもので、親局、中継局および複数の子局または戸別受信機で構成される固定系TDMA無線通信システムにおける省電力モード移行方法とシステムの再起動方法について説明する。 5, shows that the exemplary wireless communication system according to Embodiment 2 of the present invention, the master station, the power saving mode in the fixed-line TDMA radio communication system including a relay station and a plurality of slave stations or individual homes receiver It describes how to restart the migration method and system.
【0024】 [0024]
図において、3は親局、4は中継局、5は子局である。 In FIG, 3 is the master station, the fourth relay station, 5 is a slave station. 31は親局3から中継局4への下り制御チャネル、41は中継局4から子局5への下り制御チャネル、42は中継局4から親局3への上り制御チャネル、51は子局5から中継局4への上り制御チャネルを示す。 31 downlink control channel from the base station 3 to the relay station 4, 41 downlink control channel to the relay station 4 slave station 5, 42 uplink control channel from the relay station 4 to the master station 3, 51 slave stations 5 It shows an uplink control channel to the relay station 4.
定常運用時の親局3は、中継局4を介して下り制御チャネル31,41を利用して、すべての子局5に報知情報CCHを送信する。 The master station in the steady operation 3 uses the downlink control channel 31, 41 via the relay station 4 transmits the broadcast information CCH in all slave stations 5. また子局5は中継局4を介して上り制御チャネル51,42を利用し、親局3に発呼要求信号すなわち発信無線状態報告を送信するようになっている。 Matako station 5 is adapted to utilize the uplink control channel 51,42 via the relay station 4 transmits a call request signal or transmitting a radio status report to the master station 3.
【0025】 [0025]
図6は省電力モード移行時の接続シーケンスを示すもので、これにより省電力モード移行動作について説明する。 Figure 6 shows the connection sequence of the power saving mode transition, thereby described power saving mode transition operation.
図において、定常状態で動作していた親局3は、下り制御チャネル31,41を利用して中継局4および子局5に対して省電力モード移行指示を送信する。 In the figure, the master station 3 which has been operating in steady state, transmits a power saving mode transition instruction to the relay station 4 and the slave station 5 using a downlink control channel 31, 41. 子局5は、この省電力モード移行指示を受信すると直ちに自局状態および移行指示確認を中継局4を介して親局3に送信し、省電力モードに移行する。 The slave station 5, this receives the power saving mode transition instruction immediately own station state and transition instruction checking via the relay station 4 transmits to the master station 3, shifts to the power saving mode. 中継局4は、各子局5からの移行指示確認を親局3に送信した後、省電力モードに移行する。 Relay station 4, after transmitting the shift instruction confirmation from the slave station 5 to the parent station 3, shifts to the power saving mode. また、中継局4は、すべての子局5からの移行指示を受信できなくても、親局3に対して自局状態並びに移行指示確認を送信した後、自局のタイマーのタイムアウトにより省電力モードに移行する。 The relay station 4, also be able to receive a transition instruction from all slave stations 5, after transmitting the own station state and transition instruction acknowledgment to the master station 3, power saving by the timer timeout own station to shift the mode. 親局3は、中継局4からの移行指示確認を受信するまで、省電力モード移行指示を送信し続け、中継局4からの移行指示確認を受信した後、省電力モードに移行する。 Master station 3, until it receives the transfer instruction confirmation from the relay station 4, continues to send the power-saving mode transition instruction, after receiving the migration instruction confirmation from the relay station 4, and shifts to the power saving mode.
【0026】 [0026]
親局3は、省電力モードの状態において、報知情報CCHの送信を停止する。 Master station 3 is in the state of power saving mode, it stops the transmission of the broadcast information CCH. また、中継局4からのシステム再起動指示UW2を受け付けるUW2サーチを行うために間欠受信動作に移る。 Further, it shifted to an intermittent reception operation to perform UW2 search for accepting system restart instruction UW2 from the relay station 4. ここで、システム再起動指示UW2は、システム全体を定常状態に戻すために親局3および子局(戸別受信機)5に対して送信するもので、特定パターンで構成された連続信号である。 Here, the system restart instruction UW2 is for sending to return the entire system to a steady state master station 3 and the slave station (door-to-door receiver) for the 5, it is a continuous signal composed of a specific pattern.
【0027】 [0027]
中継局4は、省電力モードの状態において送信を停止する。 Relay station 4 stops transmission in the state of power saving mode. また、子局5または親局3からのシステム再起動要求UW1を受け付けるUW1サーチを行うために間欠受信動作に移る。 Further, it shifted to an intermittent reception operation to perform UW1 search for accepting system restart requests UW1 from the slave station 5 or the master station 3. このシステム再起動要求UW1は、子局5または親局3が通信を再開するために、システム全体を定常状態に戻すよう中継局4に対して要求するものであり、特定パターンで構成された連続信号である。 The system restart requests UW1, to the slave station 5 or parent station 3 to resume communication continuous, which requests the relay station 4 so as to return the entire system to a steady state, configured in a particular pattern it is a signal.
【0028】 [0028]
子局5は、省電力モードの状態において、中継局4からのシステム再起動指示UW2を受け付けるUW2サーチを行うために間欠受信動作に移る。 Slave station 5, in a state of power saving mode, shifted to an intermittent reception operation to perform UW2 search for accepting system restart instruction UW2 from the relay station 4. また、親局3からの報知情報CCHがある一定時間受信されなければ、子局5は自局のタイマーのタイムアウトにより省電力モードに移行するように動作する。 Further, if not received a certain time is the broadcast information CCH from the master station 3, the slave station 5 operates to shift to the power saving mode by time-out of the timer of the self station.
【0029】 [0029]
図7に、子局の要求によりシステム全体が省電力モードから定常状態に戻る動作の接続シーケンスを示す。 7 shows a connection sequence of operations to return the request of the slave station from the entire system power-saving mode to the steady state.
図において、いずれかの子局5が通信を行うために、まず中継局4に対して、中継局4の間欠受信動作のタイミングに合わせてシステム再起動要求UW1を送信する。 In the figure, one of the slave stations 5 for communication, against the RS 4, transmits a system restart request UW1 in accordance with the timing of the intermittent reception operation of the relay station 4. 中継局4はこのシステム再起動要求UW1を受信すると、親局3およびすべての子局5に対して、これらの間欠受信動作すなわちUW2サーチのタイミングに合わせてシステム再起動指示UW2を送信する。 Relay station 4 receives this system restart request UW1, the parent station 3 and all slave stations 5, and transmits the system restart instruction UW2 to suit these intermittent receiving operation, that UW2 search timing. 親局3はシステム再起動指示UW2を受信すると、直ちに定常状態に戻り、報知情報CCHの連続送信を開始する。 The parent station 3 receives the system restart instruction UW2, immediately returns to a steady state, starts continuous transmission of broadcast information CCH. また、子局5はシステム再起動指示UW2を受信すると直ちに定常状態に戻り、報知情報CCHの連続受信を行う。 Further, the slave station 5 immediately returns to steady state upon receiving a system restart instruction UW2, performs continuous reception of the broadcast information CCH. 中継局4は、自局のタイマーによるタイムアウトでシステム再起動指示UW2の送信を停止して定常状態に戻り、親局3からの報知情報CCHを中継して子局5に送信する。 RS 4 returns to the steady state by stopping the transmission system reboot instruction UW2 timeout by the timer of its own station, and transmits to the slave station 5 relaying broadcast information CCH from the master station 3. その後、最初にシステム再起動要求UW1を送信した子局5は、発呼要求信号すなわち発信無線状態報告を送信し、通信を再開する。 Thereafter, the slave station 5 sends a system reboot request UW1 first sends a call request signal or transmitting a radio status report, resume communication.
【0030】 [0030]
図8に、親局の指示によりシステム全体が省電力モードから定常状態に戻る動作の接続シーケンスを示す。 Figure 8 shows the connection sequence of operations through the system instructions of the parent station returns from the power saving mode to the steady state.
図において、親局3は中継局4に対して、システム再起動要求UW1を中継局4のUW1サーチのタイミングに合わせて送信を行う。 In the figure, the master station 3 performs transmitted together to the relay station 4, the system re-start request UW1 the timing of UW1 search relay station 4. 中継局4はこのシステム再起動要求UW1を受信後、前述と同様の動作を行う。 After the relay station 4 receives the system restart request UW1, it performs the same operation as described above. すなわち、親局3およびすべての子局5に対して、システム再起動指示UW2を間欠受信のタイミングに合わせて送信する。 That is, the parent station 3 and all slave stations 5, and transmits the combined system restart instruction UW2 the timing of the intermittent reception. 親局3はシステム再起動指示UW2を受信すると、直ちに定常状態に戻り、報知情報CCHの連続送信を開始する。 The parent station 3 receives the system restart instruction UW2, immediately returns to a steady state, starts continuous transmission of broadcast information CCH. 子局5はシステム再起動指示UW2を受信すると直ちに定常状態に戻り、報知情報CCHの連続受信を行う。 Slave station 5 immediately returns to steady state upon receiving a system restart instruction UW2, performs continuous reception of the broadcast information CCH. 中継局4は、自局のタイマーによるタイムアウトでシステム再起動指示UW2の送信を停止して定常状態に戻り、親局3からの報知情報CCHを中継して子局5に連続送信する。 RS 4 returns to the steady state by stopping the transmission system reboot instruction UW2 timeout by the timer of the self station, successively transmits to the child station 5 relaying broadcast information CCH from the master station 3.
【0031】 [0031]
実施の形態2によれば、親局3は、省電力モード時に送信を停止しているので、大電力の連続送信が不要となり消費電力を大幅に低減し、緊急時のバッテリー駆動効率を上げることができる効果が得られる。 According to the second embodiment, the master station 3, because it stops transmitting the power saving mode, the continuous transmission of high power greatly reduces the power consumption becomes unnecessary, improving the battery driving efficiency of emergency effect that can be obtained. また、親局3は、省電力モード時の受信においても、中継局4からのシステム再起動指示UW2を受け付けるための間欠受信動作以外には受信動作を停止させているので、省電力化をさらに図れる効果が得られる。 Also, the master station 3, even in the reception of the power saving mode, since in addition to the intermittent receiving operation for receiving a system restart instruction UW2 from the relay station 4 has stops the receiving operation, further power savings attained effect can be obtained. 一方、中継局4は、親局3および子局5から発せられるシステム再起動要求UW1を受け付けるための間欠受信動作以外には送受信動作を行わないようにして省電力化を図る効果が得られる。 On the other hand, the relay station 4, in addition to the intermittent receiving operation for receiving a system restart requests UW1 emitted from the master station 3 and the slave station 5 so as not to perform transmission and reception operations achieve power saving effect is obtained. また、子局5は、中継局4からのシステム再起動指示UW2を受け付けるための間欠受信動作以外には送受信動作を停止させて省電力化を図ることができる効果が得られる。 Further, the slave station 5, the effect that can be other than intermittent receiving operation for receiving a system restart instruction UW2 from the relay station 4 stops the receiving operation power saving is obtained. したがって、親局3、中継局4および子局5を併せた無線通信システム全体において多大な電力削減を可能とする効果が得られる。 Therefore, the master station 3, the effect is obtained that allows a great deal of power reduction in the overall wireless communication system in conjunction with a relay station 4 and the slave station 5.
また、実施の形態2によれば、システムが省電力モードから復帰するために親局3からの要求による場合と任意の子局5からの要求による場合のいずれにおいても、中継局5を含めて不都合なく再起動が行えるので、無線通信システム全体の省電力化の再起動方法として最適なものを提供する効果が得られる。 Further, according to the second embodiment, in any of the cases for the system to return from the power saving mode according to a request from any slave station 5 in the case according to the request from the master station 3, including the relay station 5 because restart can be performed without inconvenience, the effect of providing an optimum as a re-starting the power saving of the entire radio communication system is obtained.
【0032】 [0032]
【発明の効果】 【Effect of the invention】
以上のように、この発明によれば、基地局および複数の端末局から構成されるTDMA無線通信システムにおいて、基地局が複数の端末局に対して省電力モード移行指示を送信し、この省電力モード移行指示を受信した端末局が自局状態および移行指示確認を基地局に送信した後間欠受信動作に移り、端末局の自局状態および移行指示確認を受信した基地局が報知情報の連続送信を端末局の間欠受信動作のタイミングと一致する間欠送信動作に切り換えると共に間欠受信動作に移るように構成したので、基地局は、省電力モード時に報知情報を間欠送信する以外には送信を停止させて大電力の連続送信を不要とし、システム再起動要求を受け付けるための間欠受信動作以外には受信動作を停止させて省電力化を図り、緊急時のバッテリー駆動 As described above, according to the present invention, in the base station and TDMA wireless communication system including a plurality of terminal stations, the base station transmits a power-saving mode transition instruction to a plurality of terminal stations, the power-saving moved to the intermittent receiving operation after the mode transition instruction terminal station receiving has sent an own station state and transition instruction checking the base station, the continuous transmission of the own station state and transition instruction checking the base station receiving the broadcast information of the terminal station the so constructed as shifted to an intermittent reception operation with switching to an intermittent transmission operation to match the timing of the intermittent receiving operation of the terminal station, the base station stops the transmission in addition to intermittently transmit the broadcast information in the power saving mode Te is unnecessary continuous transmission of high-power, the system in addition to the intermittent receiving operation for receiving a restart request to stop the receiving operation realizing power saving, the emergency battery drive 率を上げることができる効果がある。 There is an effect that can raise rates.
また、端末局においても、基地局からの報知情報の間欠送信に対してタイミングを合わせた間欠受信動作以外には受信動作を行わないようにして省電力化を図る効果がある。 Also in the terminal station, the effect of the addition intermittent receiving operation timed relative to the intermittent transmission of the broadcast information from the base station so as not to perform the receiving operation power saving. したがって、基地局と端末局を併せた無線通信システム全体において、多大な電力削減を可能にする効果がある。 Accordingly, the entire radio communication system in conjunction with a base station and a terminal station, the effect of allowing a significant power reduction.
【0033】 [0033]
この発明によれば、省電力モードにあることを端末局が認識できるパラメータを基地局から間欠送信される報知情報に含めて送信し、端末局が報知情報を受信したときからでも省電力モードの間欠受信動作に移れるように構成したので、省電力モード移行指示を受信できなかった端末局があったとしても、その後に報知情報を受信したときから省電力モードに切り換わることができ、省電力化移行の動作をより確実なものにする効果がある。 According to the present invention, transmitted included in the broadcast information is intermittently transmitted parameters that can be recognized by the terminal station that is in the power saving mode from the base station, the power saving mode even from when the terminal station receives the broadcast information since it is configured as Utsureru the intermittent receiving operation, even if a terminal station can not receive the power saving mode transition instruction, it can be subsequently switched from the time of reception of the broadcast information to the power saving mode, power saving the effect of the operation of the reduction proceeds to more reliable.
【0034】 [0034]
この発明によれば、基地局および複数の端末局から構成されるTDMA無線通信システムにおいて、基地局が複数の端末局に対して省電力モード移行指示を送信し、この省電力モード移行指示を受信した端末局が自局状態および移行指示確認を基地局に送信した後間欠受信動作に移り、端末局の自局状態および移行指示確認を受信した基地局が報知情報の連続送信を端末局の間欠受信動作のタイミングと一致する間欠送信動作に切り換えると共に間欠送受信動作に移って省電力モードを形成し、基地局が複数の端末局に対して所定の期間にシステム再起動指示を端末局の間欠受信動作のタイミングに合わせて送信して連続送受信動作に戻り、端末局が間欠受信動作時にシステム再起動指示を受信して連続受信動作に戻るように構成したので、 According to the present invention, in the base station and TDMA wireless communication system including a plurality of terminal stations, the base station transmits a power-saving mode transition instruction to a plurality of terminal stations, receiving the power-saving mode transition instruction the terminal station is shifted to an intermittent receiving operation after the transmission instruction to check the own station state and transition to the base station, continuous transmission intermittent terminal station of the own station state and transition instruction base station having received the confirmation notification information for the terminal station the power saving mode is formed shifts to the intermittent receiving operation with switching to an intermittent transmission operation that matches the reception operation timing, the system restart instructing the intermittent reception of the terminal station in a predetermined time period to the base station a plurality of terminal stations send in accordance with the timing of the operation returns to the continuous reception operation, since the terminal station is configured to return to the continuous reception operation by receiving a system restart instruction during intermittent receiving operation, 地局からの指示により不都合なくシステムが省電力モードから復帰するための再起動が行え、無線通信システム全体の省電力化に伴う再起動方法として最適なものを提供できる効果がある。 Restart for without inconvenience system by an instruction from the ground station returns from the power saving mode is performed, an effect that can provide an optimum restart method as due to power saving of the entire radio communication system.
【0035】 [0035]
この発明によれば、基地局および複数の端末局から構成されるTDMA無線通信システムにおいて、基地局が複数の端末局に対して省電力モード移行指示を送信し、この省電力モード移行指示を受信した端末局が自局状態および移行指示確認を基地局に送信した後間欠受信動作に移り、端末局の自局状態および移行指示確認を受信した基地局が報知情報の連続送信を端末局の間欠受信動作のタイミングと一致する間欠送信動作に切り換えると共に間欠送受信動作に移って省電力モードを形成し、複数の端末局のいずれか1局が、基地局の間欠受信動作のタイミングに合わせて発呼のためのシステム再起動要求を基地局に対して送信し、このシステム再起動要求を受信した基地局が間欠受信動作中のすべての端末局に対してシステム再起動指示 According to the present invention, in the base station and TDMA wireless communication system including a plurality of terminal stations, the base station transmits a power-saving mode transition instruction to a plurality of terminal stations, receiving the power-saving mode transition instruction the terminal station is shifted to an intermittent receiving operation after the transmission instruction to check the own station state and transition to the base station, continuous transmission intermittent terminal station of the own station state and transition instruction base station having received the confirmation notification information for the terminal station the power saving mode is formed shifts to the intermittent receiving operation with switching to an intermittent transmission operation that matches the reception operation timing, any one station of a plurality of terminal stations, in accordance with the timing of the intermittent reception operation of the base station call system restart request was transmitted to the base station, the system restart instruction to all terminal stations of intermittent receiving operation base station that received the system restart requests for 所定の期間内にかつ端末局の間欠受信動作のタイミングに合わせて送信して連続受信動作に戻り、システム再起動指示を受信した端末局が連続送受信動作に戻るように構成したので、端末局からの要求により不都合なくシステムが省電力モードから復帰するための再起動が行え、無線通信システム全体の省電力化に伴う再起動方法として最適なものを提供できる効果がある。 Returning to the continuous reception operation and transmission in accordance with the timing of the intermittent reception operation of the terminal station and within a predetermined period, the terminal station receiving system restart instruction is configured to return to the continuous reception operation, the terminal station you can restart for without inconvenience system returns from the power saving mode at the request of an effect that can provide an optimum restart method as due to power saving of the entire radio communication system.
【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS
【図1】 この発明の実施の形態1に係る無線通信システムを示す構成図である。 1 is a block diagram showing a radio communication system according to the first embodiment of the present invention.
【図2】 実施の形態1における省電力モード移行時の接続シーケンスを示す説明図である。 FIG. 2 is an explanatory diagram showing a connection sequence when the power-saving mode transition in the first embodiment.
【図3】 実施の形態1におけるシステム再起動時の接続シーケンスを示す説明図である。 3 is an explanatory diagram showing a connection sequence when the system restarts in the first embodiment.
【図4】 実施の形態1におけるシステム再起動時の接続シーケンスを示す説明図である。 4 is an explanatory diagram showing a connection sequence when the system restarts in the first embodiment.
【図5】 この発明の実施の形態2における無線通信システムを示す構成図である。 5 is a block diagram showing a radio communication system in the second embodiment of the present invention.
【図6】 実施の形態2における省電力モード移行時の接続シーケンスを示す説明図である。 6 is an explanatory diagram showing a connection sequence when the power-saving mode transition in the second embodiment.
【図7】 実施の形態2におけるシステム再起動時の接続シーケンスを示す説明図である。 7 is an explanatory diagram showing a connection sequence of the system restarts in the second embodiment.
【図8】 実施の形態2におけるシステム再起動時の接続シーケンスを示す説明図である。 8 is an explanatory diagram showing a connection sequence of the system restarts in the second embodiment.
【図9】 従来のTDMA無線通信システムを示す構成図である。 9 is a block diagram showing a conventional TDMA wireless communication system.
【図10】 従来のTDMA無線通信システムの制御チャネルを示す説明図である。 10 is an explanatory view showing a control channel of a conventional TDMA radio communication system.
【符号の説明】 DESCRIPTION OF SYMBOLS
1 基地局、2 移動局(端末局)、3 親局、4 中継局、5 子局、11,31,41 下り制御チャネル、21,42,51 上り制御チャネル。 1 the base station, second mobile station (terminal station), 3 the master station, 4 RS, 5 slave station, 11,31,41 downlink control channel, 21,42,51 uplink control channel.

Claims (4)

  1. 基地局および複数の端末局から構成されるTDMA無線通信システムにおいて、 In the base station and TDMA wireless communication system including a plurality of terminal stations,
    前記基地局が複数の前記端末局に対して省電力モード移行指示を送信し、 The base station transmits a power-saving mode transition instruction to the plurality of terminal stations,
    この省電力モード移行指示を受信した前記端末局が自局状態および移行指示確認を前記基地局に送信した後間欠受信動作に移り、 The power-saving mode transition instruction the terminal station receiving is shifted to an intermittent reception operation after sending the own station state and the transition instruction confirmation to the base station,
    前記端末局の自局状態および移行指示確認を受信した前記基地局が報知情報の連続送信を前記端末局の間欠受信動作のタイミングと一致する間欠送信動作に切り換えると共に間欠受信動作に移ることを特徴とする無線通信システムの省電力モード移行方法。 Characterized in that shifted to an intermittent reception operation with switching to an intermittent transmission operation by the base station receiving the own station state and transition instruction checking the terminal station matches the timing of the intermittent reception operation of the terminal station a continuous transmission of broadcast information power-saving mode transition method of a wireless communication system that.
  2. 省電力モードにあることを端末局が認識できるパラメータを基地局から間欠送信される報知情報に含めて送信し、前記端末局が前記報知情報を受信したときからでも省電力モードの間欠受信動作に移れるようにしたことを特徴とする請求項1記載の無線通信システムの省電力モード移行方法。 That it is in the power saving mode sends included in broadcast information intermittently transmitted from the base station parameters the terminal station can recognize the intermittent reception operation of the power saving mode even from when the terminal station receives the broadcast information Utsureru as the power saving mode shift method according to claim 1, wherein the wireless communication system is characterized in that the.
  3. 基地局および複数の端末局から構成されるTDMA無線通信システムにおいて、 In the base station and TDMA wireless communication system including a plurality of terminal stations,
    前記基地局が複数の前記端末局に対して省電力モード移行指示を送信し、 The base station transmits a power-saving mode transition instruction to the plurality of terminal stations,
    この省電力モード移行指示を受信した前記端末局が自局状態および移行指示確認を前記基地局に送信した後間欠受信動作に移り、 The power-saving mode transition instruction the terminal station receiving is shifted to an intermittent reception operation after sending the own station state and the transition instruction confirmation to the base station,
    前記端末局の自局状態および移行指示確認を受信した前記基地局が報知情報の連続送信を前記端末局の間欠受信動作のタイミングと一致する間欠送信動作に切り換えると共に間欠送受信動作に移って省電力モードを形成し、 Saving Turning to the intermittent reception operation with switching to an intermittent transmission operation by the base station receiving the own station state and transition instruction checking the terminal station matches the timing of the intermittent reception operation of the terminal station a continuous transmission of broadcast information mode is formed,
    前記基地局が複数の前記端末局に対して所定の期間にシステム再起動指示を前記端末局の間欠受信動作のタイミングに合わせて送信して連続送受信動作に戻り、 Returning to the continuous reception operation and transmitting the combined system restart instruction during a predetermined period the timing of the intermittent receiving operation of said terminal station to said base station a plurality of said terminal station,
    前記端末局が間欠受信動作時に前記システム再起動指示を受信して連続受信動作に戻ることを特徴とする無線通信システムの再起動方法。 Restart method of a wireless communication system in which the terminal station is characterized in that the return to the continuous receiving operation to receive the system restart instruction during intermittent receiving operation.
  4. 基地局および複数の端末局から構成されるTDMA無線通信システムにおいて、 In the base station and TDMA wireless communication system including a plurality of terminal stations,
    前記基地局が複数の前記端末局に対して省電力モード移行指示を送信し、 The base station transmits a power-saving mode transition instruction to the plurality of terminal stations,
    この省電力モード移行指示を受信した前記端末局が自局状態および移行指示確認を前記基地局に送信した後間欠受信動作に移り、 The power-saving mode transition instruction the terminal station receiving is shifted to an intermittent reception operation after sending the own station state and the transition instruction confirmation to the base station,
    前記端末局の自局状態および移行指示確認を受信した前記基地局が報知情報の連続送信を前記端末局の間欠受信動作のタイミングと一致する間欠送信動作に切り換えると共に間欠送受信動作に移って省電力モードを形成し、 Saving Turning to the intermittent reception operation with switching to an intermittent transmission operation by the base station receiving the own station state and transition instruction checking the terminal station matches the timing of the intermittent reception operation of the terminal station a continuous transmission of broadcast information mode is formed,
    複数の前記端末局のいずれか1局が、前記基地局の間欠受信動作のタイミングに合わせて発呼のためのシステム再起動要求を前記基地局に対して送信し、 Either one station of a plurality of the terminal stations transmits a system restart request for call to the base station in accordance with the timing of the intermittent reception operation of the base station,
    このシステム再起動要求を受信した前記基地局が間欠受信動作中のすべての前記端末局に対してシステム再起動指示を所定の期間内にかつ前記端末局の間欠受信動作のタイミングに合わせて送信して連続送受信動作に戻り、 The system restart requests the base station receiving the transmitted according to the timing of the intermittent receiving operation of the system restart instruction to a predetermined period and said terminal station to all of the terminal stations during the intermittent receiving operation to return to the continuous transmission and reception operations Te,
    前記システム再起動指示を受信した前記端末局が連続受信動作に戻ることを特徴とする無線通信システムの再起動方法。 Restart method of a wireless communication system, wherein the terminal station receiving the system restart instruction is returned to the continuous reception operation.
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