JP2012142877A - Radio communication apparatus - Google Patents

Radio communication apparatus Download PDF

Info

Publication number
JP2012142877A
JP2012142877A JP2011000998A JP2011000998A JP2012142877A JP 2012142877 A JP2012142877 A JP 2012142877A JP 2011000998 A JP2011000998 A JP 2011000998A JP 2011000998 A JP2011000998 A JP 2011000998A JP 2012142877 A JP2012142877 A JP 2012142877A
Authority
JP
Japan
Prior art keywords
reception
identification information
wireless communication
communication device
wireless
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2011000998A
Other languages
Japanese (ja)
Inventor
Yasuaki Iwata
康昭 岩田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Original Assignee
Panasonic Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corp filed Critical Panasonic Corp
Priority to JP2011000998A priority Critical patent/JP2012142877A/en
Publication of JP2012142877A publication Critical patent/JP2012142877A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Mobile Radio Communication Systems (AREA)

Abstract

PROBLEM TO BE SOLVED: To solve the following problem: a communication system, such as Bluetooth(R) Low Energy, has disadvantages of long time required for connection establishment and hence increased power consumption at waiting operation because no adjustment of reception window and transmission timing between a master and a slave; therefore, it is conceivable that a transmission signal is completely received by increasing a reception operation interval as one of measures, which has a problem of further increased power consumption at continuous reception operation.SOLUTION: By learning a transmission interval of identification information in other radio communication apparatuses prior to connection operation, an unwasted reception window width is determined. By implementing a reception operation within the reception window width determined at connection, an unwasted reception operation is eliminated to reduce power consumption.

Description

従来の無線通信分野。特にBluetooth（登録商標） Low Energyのように、通信が確立されていない状態で、送信タイミングを受信側が知ることができない通信方式を利用している無線通信。 Conventional wireless communication field. In particular, wireless communication using a communication method such as Bluetooth (registered trademark) Low Energy in which the reception side cannot know the transmission timing when communication is not established.

特許文献１のように、同期通信方式において、送信タイミングを受信側へ通知し、受信側が受信ウィンドウを設定し間欠受信する方法や、特許文献２のように送信タイミングを同期確立後（同期通信時）に予測する方法により、受信時の消費電力を抑えられる提案がされてきた。しかし、通信未確立時に送信タイミングを受信側が知ることができないような非同期通信では、上記従来の技術では受信時の消費電力を抑えることができなかった。 As in Patent Document 1, in the synchronous communication method, the transmission timing is notified to the reception side, and the reception side sets the reception window and performs intermittent reception. ) Has been proposed to reduce power consumption during reception. However, in asynchronous communication in which the reception side cannot know the transmission timing when communication is not established, the above-described conventional technique cannot suppress power consumption during reception.

特開2006-314121号公報JP 2006-314121 A 特開2004-228930号公報JP 2004-228930 A

Bluetooth（登録商標） Low Energyのような通信方式では、マスターとスレーブの間で、通信受信ウィンドウと送信タイミングが調整されていないため、接続確立までの時間が長くなり、消費電力が増加してしまうという欠点がある。これを改善する為に、例えば受信動作間隔を長くして、送信信号を確実に受信する方法が考えられるが、連続受信動作時の消費電力がさらに増加してしまうという課題がある。 In a communication method such as Bluetooth (registered trademark) Low Energy, the communication reception window and transmission timing are not adjusted between the master and slave, so the time to establish a connection becomes longer and power consumption increases. There is a drawback. In order to improve this, for example, a method of reliably receiving a transmission signal by increasing the reception operation interval can be considered, but there is a problem that the power consumption during the continuous reception operation further increases.

本発明の無線通信機器は、他の無線通信機器に割り当てられる識別情報を受信する無線部と、受信し復調された情報から前記識別情報を解析する解析部、解析された前記識別情報の受信間隔を測定することが可能な測定部と、前記受信間隔を前記識別情報と合わせて記憶する記憶部と、を具備する。
本発明は、前記無線通信機器において前記識別情報を持つ無線通信機器と接続する場合、前記記憶部から前記識別情報と関連づけられた受信間隔を呼び出し、呼び出した受信間隔よりも時間的に長い受信ウィンドウ幅を開き（受信動作期間を長く設定）、前記他の無線通信機器からの信号を受信する無線通信機器。 The wireless communication device of the present invention includes a wireless unit that receives identification information assigned to another wireless communication device, an analysis unit that analyzes the identification information from received and demodulated information, and a reception interval of the analyzed identification information And a storage unit for storing the reception interval together with the identification information.
When the wireless communication device is connected to a wireless communication device having the identification information, the present invention calls a reception interval associated with the identification information from the storage unit, and receives a reception window longer in time than the called reception interval. A wireless communication device that opens a width (sets a long reception operation period) and receives a signal from the other wireless communication device.

これら各機能部と受信制御方法により、他の無線通信機器の送信間隔に応じた無駄の無い受信動作を行うことで、受信動作における消費電力を効率的に削減することが出来る。   By using each of these functional units and the reception control method, a wasteful reception operation corresponding to the transmission interval of another wireless communication device is performed, so that power consumption in the reception operation can be efficiently reduced.

また、本発明の無線通信機器は、前記無線部が、前記他の無線通信機器に割り当てられる識別情報を受信した場合、連続受信を開始し、次に前記他の無線通信機器に割り当てられる識別情報を受信した場合は、前記連続受信を終了する無線通信機器。   Further, the wireless communication device of the present invention, when the wireless unit receives the identification information assigned to the other wireless communication device, starts the continuous reception, and then the identification information assigned to the other wireless communication device The wireless communication device that terminates the continuous reception if received.

この制御方法により、連続受信期間中に他の無線通信機器の識別情報の送信間隔を測定することができ、更に他の無線機器に割り当てられる識別情報を受信して連続受信を終了させることで、測定において最低限必要な時間だけ連続受信動作を行い、測定に必要な消費電力を最小にすることが出来る。   By this control method, it is possible to measure the transmission interval of the identification information of other wireless communication devices during the continuous reception period, and further by receiving the identification information allocated to other wireless devices and terminating the continuous reception, The continuous reception operation is performed for the minimum necessary time in the measurement, and the power consumption necessary for the measurement can be minimized.

また、本発明の無線通信機器は、前記無線部が、前記他の無線通信機器に割り当てられる識別情報を受信した場合、連続受信を開始し、さらにその後所定時間が経過しても、前記他の無線通信機器に割り当てられる識別情報を受信しない場合は、前記連続受信を終了する無線通信機器。   In addition, the wireless communication device of the present invention starts the continuous reception when the wireless unit receives the identification information assigned to the other wireless communication device. The wireless communication device that terminates the continuous reception when it does not receive the identification information assigned to the wireless communication device.

この制御方法により、連続受信中に他の無線通信機器から識別情報が送信されなくなる場合や受信が困難な環境にある場合などで、受信動作を停止することで、無駄な受信動作による消費電力を削減することが出来る。   This control method reduces power consumption due to useless reception operations by stopping the reception operation when identification information is not transmitted from other wireless communication devices during continuous reception or when reception is difficult. It can be reduced.

また、本発明の無線通信機器は、前記他の無線通信機器に割り当てられる識別情報を受信した場合、連続受信を開始すると同時に前記所定時間まで時間を計測するが、その所定時間は、接続確立後にやり取りする情報の内容や用途、接続する無線通信機器の種類に応じて異なる無線通信機器。   In addition, when the wireless communication device of the present invention receives the identification information assigned to the other wireless communication device, the wireless communication device measures the time until the predetermined time simultaneously with the start of continuous reception. Wireless communication devices that vary depending on the content and use of information to be exchanged and the type of wireless communication device to be connected.

この構成により、他の無線通信機器の種類・用途などにより、機器の識別情報の送信間隔が大きく異なる場合が考えられ、所定時間を機器に応じて異なることを可能にすることで、連続受信中に他の無線通信機器からの識別情報が送信されなくなる場合や受信が困難な環境にある場合などの理由で受信困難な環境にある場合で、識別情報を受信できなくとも連続受信動作を停止することができ、無駄な連続受信動作による消費電力を削減することが出来る。連続受信動作停止後は元の間欠受信動作に復帰させても良い。   With this configuration, the transmission interval of device identification information may vary greatly depending on the type and application of other wireless communication devices, and continuous reception is possible by allowing the specified time to vary depending on the device. If the identification information from another wireless communication device is no longer transmitted or the reception is difficult due to the environment where reception is difficult, the continuous reception operation is stopped even if the identification information cannot be received. Therefore, power consumption due to useless continuous reception operation can be reduced. After the continuous reception operation is stopped, the original intermittent reception operation may be restored.

以上のように本発明によれば、送信タイミングを受信側が知ることができない非同期通信方式であっても、学習した識別情報の報知間隔に基づいて受信ウィンドウを接続動作時に必要最小の間隔で決定することができる。これにより、接続動作時に受信ウィンドウを必要な時間よりも長く設定することによって、無駄な受信動作による電力消費を削減することが可能である。さらに、他の無線機器の識別情報の報知間隔を学習する際、他の無線機器が圏外移動などによって通信不可になった場合、連続受信状態を継続することによる無駄な消費電力を抑えることが可能である。 As described above, according to the present invention, even in an asynchronous communication method in which the reception side cannot know the transmission timing, the reception window is determined at the minimum necessary interval during the connection operation based on the learned notification interval of the identification information. be able to. As a result, it is possible to reduce power consumption due to useless reception operations by setting the reception window longer than the required time during the connection operation. In addition, when learning the notification interval of the identification information of other wireless devices, if other wireless devices become unable to communicate due to movement outside the service area, it is possible to suppress unnecessary power consumption by continuing the continuous reception state. It is.

本発明における無線端末の構成を示すブロック図The block diagram which shows the structure of the radio | wireless terminal in this invention 他の無線機器からの識別情報の送信間隔を学習する動作フロー図Operation flow diagram for learning the transmission interval of identification information from other wireless devices 他の無線機器と接続する場合の動作フロー図Operation flow diagram when connecting to other wireless devices 他の無線機器の識別情報送信タイミングと自己の無線機器における学習動作図Identification information transmission timing of other wireless devices and learning operation diagram in own wireless device 他の無線機器の識別情報送信タイミングと自己の無線機器における接続動作図Identification information transmission timing of other wireless devices and connection operation diagram of own wireless device 選択画面の模式図Schematic diagram of selection screen

以下、図面を参照しながら本発明の実施形態について詳解する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

図１は、本発明の実施の形態における無線端末の構成を示すブロック図である。前記無線端末において、無線端末１００、アンテナ１０１、受信部１０２、復調部１０３により他の無線通信機器に割り当てられる識別情報を受信することができる。解析部１０４は、これにより復調されたデータを解析して、他の無線端末の識別情報を解読することが可能である。測定部１０５は識別情報の受信間隔を測定する測定部で、解析部で解析された識別情報をモニターし、識別情報が解析部に入力されたかどうかを時計機能または内部クロックを用いることで、受信間隔を測定することが可能である。さらに、記憶部１０６は他の識別情報とその送信間隔結果を関連して記憶する。例として、RAMメモリーなどが相当する。前記記憶部は、解析部と測定部により得られた識別情報とその受信間隔を関連付けして記憶する。CPU（中央演算装置）１０７は１０２〜１０６を制御する中央演算装置（CPU）を表す。 これらを具備した無線機器において、前記識別情報を取得するために、間欠受信動作を行なう。このとき前記識別情報の送信間隔に応じて受信動作期間（受信ウィンドウ幅）を決定し、これにより無駄の無い受信制御を行うことが可能となり、受信動作における消費電力を効率的に削減することが出来る。
受信動作期間の決定方法としては、記憶部に記憶されている前記受信間隔よりも長い期間であれば良い。具体的には、識別情報が包含されているパケットの送信時間を前記受信間隔に加算されれば良く、Bluetooth（登録商標） Low Energyの場合では、Advertising Event期間の最大期間20msを加算すると充分である。
図２は、無線機器で他の無線機器からの無線信号を間欠受信しているとき、他の無線機器からの識別情報の送信間隔を学習する動作フロー図を示している。図１のブロック図と図２の動作フロー図を用いて、識別情報の送信間隔を学習するための制御方法について説明する。
間欠受信動作２００では、アンテナ１０１と受信部１０２で他の無線機器から送信された電波を間欠受信している。パケット受信の有無の判定動作２０１で、パケットを受信したかどうかを判定し、受信した場合は、次のパケット解析動作２０２に遷移する。受信しない場合は２０１に戻り、間欠受信動作を継続する。
２０２に示した動作では、解析部１０４で、受信部１０２ が受信したパケットを解析する。解析部で、受信相手機器のアドレスに基づいて自端末と接続可能な端末かを確認し、次の所望パケットを始めて（1回目）受信したかの判定動作２０３に遷移する。２０３の動作処理では、１０６の記憶部から１０７のCPUが過去のデータを検索して、過去受信した記録が無い無線機器の識別情報であった場合は、２０３の動作処理に状態遷移する。記録があった場合は、２００の間欠受信動作に戻る。
測定動作（タイマー動作、連続受信、パケット解析）開始と測定動作２０４では、図１に示した１０５を動作させ、かつ１０２で間欠受信動作を連続受信動作に切り替えて識別情報を漏れなく受信できるようにして、次のタイムアウト動作２０５に状態遷移する。
２０５の動作処理では、ある所定の時間を過ぎて（タイムアウト）、前回受信した識別情報を受信せずにいた場合は、２０７の動作処理に状態遷移する。２０７の動作処理では、測定動作とタイマーを停止し、次の測定結果（パケット間隔、識別情報）の登録動作２０８に状態遷移する。
２０８動作処理では、識別情報の情報とタイムアウト時間を図１の１０６の記憶部に登録する。さらに次の間欠受信動作に復帰させる動作２０９に状態遷移し、連続受信動作から従来の間欠受信動作へ切り替える。
２０５の動作処理で、ある所定の時間を過ぎていなかった場合は、所望パケットを2回目に受信したか判定動作を示す２０６の動作処理に状態遷移し、図１に示した受信部１０２で信号を受信、復調部１０３で信号をパケットに復号し、解析部１０４でパケットを解析する。このとき記憶部１０６から前回受信したパケットの識別情報と同じであると確認した場合、次の測定動作停止と判定２０７に状態遷移する。
２０７に示した動作では、図１に示した１０４の測定部とタイマー動作を停止させ、２０８の動作処理に状態遷移し、その測定結果と識別情報にある識別情報を１０６の記憶部に記録する。この後で、連続受信動作から従来の間欠受信動作に遷移する。
以上に示した学習動作により、無駄な受信動作を無くし消費電力を抑えながら、接続確立前に他の無線通信機器毎に識別情報の送信間隔を記憶することができる。
図３は、無線機器で他の無線機器と接続する場合の動作フロー図を示している。図１のブロック図と図３の動作フロー図を用いて、接続動作時における受信動作の制御方法について説明する。
接続開始動作 ３００に示すように、受信部１０２、復調部１０３を起動させ、また表示部１０８に記憶部１０６から得られた情報を元に接続対象機器を表示させる。このときユーザーによって入力部１０９を用いて無線機器１００と接続したい他の無線機器を選択することが可能である。記憶部から学習結果を参照して、間欠受信を実施する動作３０１に状態遷移する。
３０１に示した動作では、ユーザーによって選択された無線機器の識別情報を元に、図１に示した１０７のCPUは１０６の記憶部からその無線機器に関する識別情報の送信間隔に関する情報を取り出す。
取り出された情報（他の無線機器毎の送信間隔）を元に、送信間隔よりも大きな間隔で受信する間欠受信動作を行なう。
次の接続手順へ状態遷移する動作３０３では、接続したい機器の識別情報を受信する動作３０２の動作処理中に接続したい機器の識別情報を受信した場合、３０３に状態遷移させ、次の接続手順へ状態遷移する。接続したい識別情報を受信していない場合は、引き続き間欠受信動作を継続する。
以上に示す学習結果を用いた接続動作時の受信制御方法により、送信タイミングを受信側が知ることができない非同期通信方式であっても、識別情報を取り逃がさない適切な受信間隔で間欠受信できることが可能となる。この結果、無駄な連続受信動作を無くし消費電力を抑えながら、接続確立のための受信動作を効率的に制御することが可能となる。
図４は前述した学習動作における機器ＡとＢの受信・送信動作および測定動作タイミングを表したものである。他の無線機器からの識別情報（パケット）の送信間隔４００は、無線機器（機器B）の識別情報をパケット送信している時の送信間隔を示している。
自己の無線機器における受信動作間隔を示す４０１は、無線機器（機器A）の受信動作期間、自己の無線機器における連続受信間隔（測定間隔）を示す４０２では、この期間中に機器Bからの送信信号を機器Aが受信してから前述した学習動作を開始し、受信部では連続受信動作を行なっている。このとき４０２で連続受信中に機器Bからの識別情報を受信したときに、受信部では連続受信動作を停止し、測定期間T0の情報と識別情報を記憶部に記憶する。
図５は、前述した接続動作時の自他の無線機器（機器A,B）における送受信動作タイミングを示している。 FIG. 1 is a block diagram showing a configuration of a wireless terminal in the embodiment of the present invention. In the wireless terminal, identification information assigned to other wireless communication devices can be received by the wireless terminal 100, the antenna 101, the receiving unit 102, and the demodulating unit 103. The analysis unit 104 can analyze the demodulated data and decode the identification information of other wireless terminals. The measuring unit 105 is a measuring unit that measures the reception interval of the identification information. The measuring unit 105 monitors the identification information analyzed by the analyzing unit, and receives whether the identification information is input to the analyzing unit by using a clock function or an internal clock. It is possible to measure the interval. Further, the storage unit 106 stores other identification information and the transmission interval result in association with each other. An example is RAM memory. The storage unit stores the identification information obtained by the analysis unit and the measurement unit in association with the reception interval. A CPU (central processing unit) 107 represents a central processing unit (CPU) that controls 102 to 106. In a wireless device equipped with these, an intermittent reception operation is performed in order to acquire the identification information. At this time, the reception operation period (reception window width) is determined in accordance with the transmission interval of the identification information, thereby making it possible to perform wasteless reception control and efficiently reducing power consumption in the reception operation. I can do it.
As a method for determining the reception operation period, a period longer than the reception interval stored in the storage unit may be used. Specifically, the transmission time of the packet including the identification information may be added to the reception interval. In the case of Bluetooth (registered trademark) Low Energy, it is sufficient to add the maximum period of 20 ms of the Advertising Event period. is there.
FIG. 2 shows an operation flowchart for learning the transmission interval of identification information from another wireless device when the wireless device intermittently receives a wireless signal from the other wireless device. A control method for learning the transmission interval of identification information will be described with reference to the block diagram of FIG. 1 and the operation flowchart of FIG.
In the intermittent reception operation 200, the antenna 101 and the receiving unit 102 intermittently receive radio waves transmitted from other wireless devices. In the operation 201 for determining whether or not a packet has been received, it is determined whether or not a packet has been received. If a packet has been received, the process proceeds to the next packet analysis operation 202. If not received, the process returns to 201 and the intermittent reception operation is continued.
In the operation indicated by 202, the analysis unit 104 analyzes the packet received by the reception unit 102. The analysis unit confirms whether the terminal can be connected to the own terminal based on the address of the receiving device, and the process proceeds to a determination operation 203 for determining whether the next desired packet has been received for the first time (first time). In the operation process 203, if the CPU 107 retrieves past data from the storage unit 106 and the identification information of the wireless device has no record received in the past, the state transitions to the operation process 203. If there is a record, the operation returns to the 200 intermittent reception operation.
In the measurement operation (timer operation, continuous reception, packet analysis) start and measurement operation 204, 105 shown in FIG. 1 is operated, and the intermittent reception operation is switched to the continuous reception operation in 102 so that the identification information can be received without omission. Then, state transition is made to the next timeout operation 205.
In the operation process 205, when a predetermined time has passed (timeout) and the identification information received last time has not been received, the state transitions to the operation process 207. In the operation process 207, the measurement operation and the timer are stopped, and the state transitions to the registration operation 208 for the next measurement result (packet interval, identification information).
In the 208 operation process, the information of the identification information and the timeout time are registered in the storage unit 106 in FIG. Further, the state transitions to operation 209 for returning to the next intermittent reception operation, and the continuous reception operation is switched to the conventional intermittent reception operation.
In the operation process 205, if a predetermined time has not passed, the state transition is made to the operation process 206 indicating whether or not the desired packet has been received for the second time, and the signal is received by the receiving unit 102 shown in FIG. The demodulator 103 decodes the signal into packets, and the analyzer 104 analyzes the packets. At this time, when it is confirmed that it is the same as the identification information of the packet previously received from the storage unit 106, the state transitions to the next measurement operation stop and determination 207.
In the operation shown in 207, the measurement unit 104 and the timer operation shown in FIG. 1 are stopped, the state transitions to the operation process 208, and the measurement result and the identification information in the identification information are recorded in the storage unit 106. . Thereafter, a transition is made from the continuous reception operation to the conventional intermittent reception operation.
With the learning operation described above, it is possible to store the transmission interval of identification information for each other wireless communication device before establishing a connection while eliminating unnecessary reception operation and suppressing power consumption.
FIG. 3 shows an operation flow diagram when a wireless device is connected to another wireless device. With reference to the block diagram of FIG. 1 and the operation flowchart of FIG. 3, a method for controlling the reception operation during the connection operation will be described.
As shown in the connection start operation 300, the receiving unit 102 and the demodulating unit 103 are activated, and the connection target device is displayed on the display unit 108 based on the information obtained from the storage unit 106. At this time, it is possible for the user to select another wireless device to be connected to the wireless device 100 using the input unit 109. With reference to the learning result from the storage unit, the state transitions to operation 301 for performing intermittent reception.
In the operation indicated by 301, based on the identification information of the wireless device selected by the user, the CPU 107 shown in FIG. 1 takes out information related to the transmission interval of the identification information related to the wireless device from the storage unit 106.
Based on the extracted information (transmission interval for each other wireless device), an intermittent reception operation of receiving at an interval larger than the transmission interval is performed.
In operation 303 in which the state transition to the next connection procedure is performed, when identification information of the device to be connected is received during the operation process of operation 302 in which the identification information of the device to be connected is received, the state is changed to 303 and the next connection procedure is performed. State transition. If the identification information to be connected is not received, the intermittent reception operation is continued.
The reception control method at the time of connection operation using the learning results shown above enables intermittent reception at an appropriate reception interval that does not miss the identification information, even in the case of an asynchronous communication method in which the reception side cannot know the transmission timing. It becomes. As a result, it is possible to efficiently control the reception operation for establishing a connection while eliminating unnecessary continuous reception operation and suppressing power consumption.
FIG. 4 shows the reception / transmission operation and measurement operation timing of the devices A and B in the learning operation described above. The transmission interval 400 of identification information (packet) from another wireless device indicates a transmission interval when the identification information of the wireless device (device B) is transmitted in packets.
401 indicating the reception operation interval in the own wireless device is a reception operation period of the wireless device (device A), and 402 indicating a continuous reception interval (measurement interval) in the own wireless device is transmitted from the device B during this period. The learning operation described above is started after the device A receives the signal, and the receiving unit performs the continuous reception operation. At this time, when the identification information from the device B is received during the continuous reception in 402, the reception unit stops the continuous reception operation and stores the information of the measurement period T0 and the identification information in the storage unit.
FIG. 5 shows transmission / reception operation timings in the other wireless devices (devices A and B) during the connection operation described above.

図５のように、接続動作を開始してから、識別情報を受信する機器Aは、自己の無線機器における間欠受信中の学習結果を参照した受信動作５００で示されるように、学習動作で得られた時間だけ連続受信動作を行い、その区間後は受信動作を休止する間欠受信を実施する。
識別情報を送信する機器Bは、他の無線機器からの識別情報（パケット）の送信間隔５０１で、識別情報を送信するが、図５に示されるように機器Aは学習結果を元に間欠受信動作を行なっている為、機器Bが送信開始してから、次の識別情報を送信するまでに、機器Aは漏れなく機器Bの識別情報を受信することが可能となる。 As shown in FIG. 5, the device A that receives the identification information after starting the connection operation obtains the learning operation as shown by the reception operation 500 that refers to the learning result during the intermittent reception in its own wireless device. The continuous reception operation is performed for the specified time, and intermittent reception is performed after that interval to stop the reception operation.
The device B that transmits the identification information transmits the identification information at the transmission interval 501 of the identification information (packet) from the other wireless device, but the device A receives intermittently based on the learning result as shown in FIG. Since the operation is performed, the device A can receive the identification information of the device B without omission until the next identification information is transmitted after the device B starts transmission.

また本発明によると、他の無線通信機器に応じて、図２の２０５に示したタイムアウト時間の所定時間を変更することも可能である。
図６はそのときの無線機器の種類、用途に応じてユーザーが設定値を変更できるように、無線機器の画面上に選択できる機器一覧を表示させた様子を一例として表している。ただし、本機能を実現する表現方法は、図６の限りではない。
選択画面６００は、表示画面を示す。６００の画面上に、メニュー一覧（接続したい機器種類一覧を表示）６０１で示すような無線機器の一覧を表示することで、ユーザーは簡易に接続したい機器の種別・用途を予め設定することが可能となる。
送信タイミングを受信側が知ることができない非同期通信方式において、接続したい無線機器の種類・用途に応じて、その無線機器の識別情報の送信タイミングが変わる場合もあると考えられる為、送信間隔が長いと想定される種別・用途については、タイムアウト時間も長く設定でき、送信間隔が短いと想定される種別・用途については、タイムアウト時間も短く設定することが可能である。
以上のように接続したい無線機器に応じて適応的にタイムアウト時間を決定できるので、測定動作における無駄な連続受信動作を無くすことが可能である。
すなわち、本実施形態の無線通信機器は、他の無線通信機器に割り当てられる識別情報を受信する無線部と、前記識別情報の受信間隔を測定する測定部と、前記受信間隔を前記識別情報と合わせて記憶する記憶部と、を備え、前記他の無線通信機器に接続を開始する場合、前記記憶部から前記他の無線通信機器の識別情報に対応した受信間隔を呼び出し、呼び出した受信間隔よりも時間的に長い受信ウィンドウ幅で前記他の無線通信機器からの信号を受信する。 Further, according to the present invention, it is possible to change the predetermined time of the timeout time indicated by 205 in FIG. 2 in accordance with other wireless communication devices.
FIG. 6 shows an example in which a list of devices that can be selected is displayed on the screen of the wireless device so that the user can change the setting value according to the type and application of the wireless device at that time. However, the expression method for realizing this function is not limited to FIG.
The selection screen 600 shows a display screen. By displaying a list of wireless devices as shown in a menu list (displaying a list of device types to be connected) 601 on the screen of 600, the user can easily set in advance the types and uses of devices to be connected. It becomes.
In the asynchronous communication method where the receiving side cannot know the transmission timing, the transmission timing of identification information of the wireless device may change depending on the type and application of the wireless device to be connected. For assumed types / uses, the timeout time can be set longer, and for types / uses assumed to have a shorter transmission interval, the timeout time can also be set shorter.
As described above, the time-out time can be adaptively determined according to the wireless device to be connected, so that it is possible to eliminate useless continuous reception operation in the measurement operation.
That is, the wireless communication device according to the present embodiment includes a wireless unit that receives identification information assigned to another wireless communication device, a measurement unit that measures a reception interval of the identification information, and a combination of the reception interval with the identification information. A storage unit that stores the information, and when starting connection to the other wireless communication device, the reception unit calls the reception interval corresponding to the identification information of the other wireless communication device from the storage unit, than the received reception interval A signal from the other wireless communication device is received with a long reception window width.

この構成により、他の無線通信機器の送信間隔に応じた無駄の無い受信動作を行うことで、受信動作における消費電力を効率的に削減することが出来る。   With this configuration, it is possible to efficiently reduce power consumption in the reception operation by performing a lean reception operation according to the transmission interval of other wireless communication devices.

また、本実施形態の無線通信機器は、前記無線部は、前記他の無線通信機器に割り当てられる識別情報を受信した場合、連続受信を開始し、次に前記他の無線通信機器に割り当てられる識別情報を受信した場合、前記連続受信を終了する。   In the wireless communication device according to the present embodiment, when the wireless unit receives the identification information assigned to the other wireless communication device, the wireless communication device starts continuous reception, and then is assigned to the other wireless communication device. When the information is received, the continuous reception is terminated.

この構成により、連続受信期間中に他の無線通信機器の識別情報の送信間隔を測定することができ、更に他の無線機器に割り当てられる識別情報を受信して連続受信を終了させることで、測定において最低限必要な時間だけ連続受信動作を行い、測定に必要な消費電力を最小にすることが出来る。   With this configuration, it is possible to measure the transmission interval of the identification information of other wireless communication devices during the continuous reception period, and further, by receiving the identification information assigned to other wireless devices and terminating the continuous reception, In this case, the continuous reception operation is performed for the minimum necessary time in order to minimize the power consumption necessary for the measurement.

また、本実施形態の無線通信機器は、前記無線部は、前記他の無線通信機器に割り当てられる識別情報を受信した場合、連続受信を開始し、その後所定時間が経過しても、前記他の無線通信機器に割り当てられる識別情報を受信しない場合、前記連続受信を終了する。   Further, in the wireless communication device according to the present embodiment, when the wireless unit receives the identification information assigned to the other wireless communication device, the wireless communication device starts continuous reception, and even after the predetermined time has elapsed, If the identification information assigned to the wireless communication device is not received, the continuous reception is terminated.

この構成により、連続受信中に他の無線通信機器から識別情報が送信されなくなる場合や受信が困難な環境にある場合などで、受信動作を停止することで、無駄な受信動作による消費電力を削減することが出来る。   This configuration reduces power consumption due to useless reception operations by stopping reception operations when identification information is not transmitted from other wireless communication devices during continuous reception or when reception is difficult. I can do it.

また、本実施形態の無線通信機器は、前記所定時間は、前記他の無線通信機器に応じて異なる。   In addition, in the wireless communication device of the present embodiment, the predetermined time varies depending on the other wireless communication device.

この構成により、他の無線通信機器の種類・用途などにより、機器の識別情報の送信間隔が大きく異なる場合が考えられ、所定時間を機器に応じて異なることを可能にすることで、連続受信中に他の無線通信機器からの識別情報が送信されなくなる場合や受信が困難な環境にある場合などの理由で受信困難な環境にある場合で、識別情報を受信できなくとも連続受信動作を停止することができ、無駄な連続受信動作による消費電力を削減することが出来る。連続受信動作停止後は元の間欠受信動作に復帰させても良い。   With this configuration, the transmission interval of device identification information may vary greatly depending on the type and application of other wireless communication devices, and continuous reception is possible by allowing the specified time to vary depending on the device. If the identification information from another wireless communication device is no longer transmitted or the reception is difficult due to the environment where reception is difficult, the continuous reception operation is stopped even if the identification information cannot be received. Therefore, power consumption due to useless continuous reception operation can be reduced. After the continuous reception operation is stopped, the original intermittent reception operation may be restored.

本発明はBluetooth（登録商標） Low Energyに代表される近距離無線通信において、受信動作時の消費電力を抑える制御方法に関するものであり、産業上において利用される可能性は非常に高いと考える。 The present invention relates to a control method for suppressing power consumption during a reception operation in short-range wireless communication represented by Bluetooth (registered trademark) Low Energy, and is considered to have a very high possibility of being used in the industry.

１０１ アンテナ
１０２ 受信部
１０３ 復調部
１０４ 解析部
１０５ 測定部
１０６ 記憶部
１０７ CPU（中央演算装置）
１０８ 表示部
１０９ 入力部
２００ 間欠受信動作
２０１ パケット受信の有無の判定動作
２０２ パケット解析動作
２０３ 所望パケットを始めて（1回目）受信したかの判定動作
２０４ 測定動作（タイマー動作、連続受信、パケット解析）開始と測定動作
２０５ タイムアウト動作
２０６ 所望パケットを2回目に受信したか判定動作
２０７ 測定動作停止と判定
２０８ 測定結果（パケット間隔、識別情報）の登録動作（記憶部に測定結果を記憶）
２０９ 間欠受信動作に復帰させる動作
３００ 接続開始動作
３０１ 記憶部から学習結果を参照して、間欠受信を実施する動作
３０２ 接続したい機器の識別情報を受信する動作
３０３ 次の接続手順へ状態遷移する動作
４００ 他の無線機器からの識別情報（パケット）の送信間隔
４０１ 自己の無線機器における受信動作間隔
４０２ 自己の無線機器における連続受信間隔（測定間隔）
５００ 自己の無線機器における間欠受信中の学習結果を参照した受信動作
５０１ 他の無線機器からの識別情報（パケット）の送信間隔
６００ 選択画面
６０１ メニュー一覧（接続したい機器種類一覧を表示） DESCRIPTION OF SYMBOLS 101 Antenna 102 Reception part 103 Demodulation part 104 Analysis part 105 Measurement part 106 Storage part 107 CPU (Central processing unit)
108 Display unit 109 Input unit 200 Intermittent reception operation 201 Operation for determining presence / absence of packet reception 202 Packet analysis operation 203 Operation for determining whether a desired packet is received for the first time (first time) 204 Measurement operation (timer operation, continuous reception, packet analysis) Start and measurement operation 205 Timeout operation 206 Judgment operation whether desired packet is received for the second time 207 Measurement operation stop and determination 208 Measurement result (packet interval, identification information) registration operation (measurement result is stored in storage unit)
209 Operation for returning to intermittent reception operation 300 Connection start operation 301 Operation for performing intermittent reception with reference to learning result from storage unit 302 Operation for receiving identification information of device to be connected 303 Operation for state transition to next connection procedure 400 Transmission interval of identification information (packet) from other wireless device 401 Reception operation interval in own wireless device 402 Continuous reception interval (measurement interval) in own wireless device
500 Reception operation referring to learning result during intermittent reception in own wireless device 501 Transmission interval of identification information (packet) from other wireless device 600 Selection screen 601 Menu list (displays device type list to be connected)

Claims (4)

他の無線通信機器に割り当てられる識別情報を受信する無線部と、
前記識別情報の受信間隔を測定する測定部と、
前記受信間隔を前記識別情報と合わせて記憶する記憶部と、を備え、
前記他の無線通信機器に接続を開始する場合、前記記憶部から前記他の無線通信機器の識別情報に対応した受信間隔を呼び出し、呼び出した受信間隔よりも時間的に長い受信ウィンドウ幅で前記他の無線通信機器からの信号を受信する無線通信機器。 A wireless unit that receives identification information assigned to another wireless communication device; and
A measurement unit for measuring a reception interval of the identification information;
A storage unit that stores the reception interval together with the identification information,
When starting connection to the other wireless communication device, the reception interval corresponding to the identification information of the other wireless communication device is called from the storage unit, and the other reception window width is longer than the called reception interval. Wireless communication device that receives signals from other wireless communication devices. 請求項１に記載の無線通信機器であって、
前記無線部は、前記他の無線通信機器に割り当てられる識別情報を受信した場合、連続受信を開始し、次に前記他の無線通信機器に割り当てられる識別情報を受信した場合、前記連続受信を終了する無線通信機器。 The wireless communication device according to claim 1,
The wireless unit starts continuous reception when receiving identification information assigned to the other wireless communication device, and ends the continuous reception when receiving identification information assigned to the other wireless communication device. Wireless communication equipment. 請求項２に記載の無線通信機器であって、
前記無線部は、前記他の無線通信機器に割り当てられる識別情報を受信した場合、連続受信を開始し、その後所定時間が経過しても、前記他の無線通信機器に割り当てられる識別情報を受信しない場合、前記連続受信を終了する無線通信機器。 The wireless communication device according to claim 2,
When the wireless unit receives identification information assigned to the other wireless communication device, the wireless unit starts continuous reception, and does not receive the identification information assigned to the other wireless communication device even after a predetermined time has elapsed. A wireless communication device that terminates the continuous reception. 請求項３に記載の無線通信機器であって、
前記所定時間は、前記他の無線通信機器に応じて異なる無線通信機器。 The wireless communication device according to claim 3,
The predetermined time differs depending on the other wireless communication device.
JP2011000998A 2011-01-06 2011-01-06 Radio communication apparatus Pending JP2012142877A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2011000998A JP2012142877A (en) 2011-01-06 2011-01-06 Radio communication apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011000998A JP2012142877A (en) 2011-01-06 2011-01-06 Radio communication apparatus

Publications (1)

Publication Number Publication Date
JP2012142877A true JP2012142877A (en) 2012-07-26

Family

ID=46678689

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2011000998A Pending JP2012142877A (en) 2011-01-06 2011-01-06 Radio communication apparatus

Country Status (1)

Country Link
JP (1) JP2012142877A (en)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014208063A1 (en) 2013-06-24 2014-12-31 Casio Computer Co., Ltd. Wireless communication device, wireless communication system, wireless communication method, non-transitory recording medium, central and peripheral
EP2887747A1 (en) 2013-12-18 2015-06-24 Casio Computer Co., Ltd. Radio communication device, radio communication method, and peripheral
JP2016149721A (en) * 2015-02-13 2016-08-18 キヤノン株式会社 Image processing system, control method of same, and program
US9445444B2 (en) 2014-03-14 2016-09-13 Casio Computer Co., Ltd. Wireless communication apparatus, non-transitory computer-readable medium, wireless communication method, peripheral apparatus, and central apparatus
JP2016533093A (en) * 2013-08-05 2016-10-20 クゥアルコム・インコーポレイテッドＱｕａｌｃｏｍｍ Ｉｎｃｏｒｐｏｒａｔｅｄ WLAN compatible remote control device
US9491787B2 (en) 2013-12-16 2016-11-08 Casio Computer Co., Ltd. Wireless communication apparatus, wireless communication method, non-transitory computer-readable recording medium, master, and slave
US9635496B2 (en) 2014-03-06 2017-04-25 Casio Computer Co., Ltd. Radio communication apparatus, computer readable medium, peripheral, and central
US9648486B2 (en) 2014-03-19 2017-05-09 Casio Computer Co., Ltd. Radio communication apparatus, radio communication method, computer-readable medium, slave device, and master device
US9681258B2 (en) 2014-03-19 2017-06-13 Casio Computer Co., Ltd. Radio communication apparatus, radio communication method, computer-readable medium, slave device, and master device
US9723546B2 (en) 2014-08-22 2017-08-01 Casio Computer Co., Ltd. Wireless communication device, non-transitory computer-readable recording medium, master device, and slave device
EP3462254A1 (en) 2017-10-02 2019-04-03 Casio Computer Co., Ltd. Wireless communication device, electronic timepiece, wireless communication method, and storage medium
JP2019080272A (en) * 2017-10-27 2019-05-23 日本電信電話株式会社 Mobile sensor relay terminal and mobile sensor relay control method
EP3544338A1 (en) 2018-03-23 2019-09-25 Casio Computer Co., Ltd. Wireless communication device, wireless communication method, and program
JP2020010288A (en) * 2018-07-12 2020-01-16 カシオ計算機株式会社 Device, system and method for radio communication, and program
EP3634019A1 (en) 2018-10-02 2020-04-08 Casio Computer Co., Ltd. Wireless communication apparatus, wireless communication method, and program
EP3634047A1 (en) 2018-10-02 2020-04-08 Casio Computer Co., Ltd. Wireless communication apparatus, electronic timepiece, transmission power control method, and program
EP3634048A1 (en) 2018-10-04 2020-04-08 Casio Computer Co., Ltd. Wireless communication apparatus, wireless communication method, and program
US10972964B2 (en) 2018-07-30 2021-04-06 Casio Computer Co., Ltd. Communication device, scanner terminal, communication system, communication method, and storage medium
JP7279844B1 (en) 2022-11-11 2023-05-23 三菱電機ビルソリューションズ株式会社 Authentication system, learning device, reasoning device, learning method, reasoning method, learning program, and reasoning program

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014208063A1 (en) 2013-06-24 2014-12-31 Casio Computer Co., Ltd. Wireless communication device, wireless communication system, wireless communication method, non-transitory recording medium, central and peripheral
JP2016533093A (en) * 2013-08-05 2016-10-20 クゥアルコム・インコーポレイテッドＱｕａｌｃｏｍｍ Ｉｎｃｏｒｐｏｒａｔｅｄ WLAN compatible remote control device
US9491787B2 (en) 2013-12-16 2016-11-08 Casio Computer Co., Ltd. Wireless communication apparatus, wireless communication method, non-transitory computer-readable recording medium, master, and slave
US10136297B2 (en) 2013-12-18 2018-11-20 Casio Computer Co., Ltd. Radio communication device, radio communication method, computer-readable recording medium, and peripheral which change a time interval of low power communication protocol discovery messages
EP2887747A1 (en) 2013-12-18 2015-06-24 Casio Computer Co., Ltd. Radio communication device, radio communication method, and peripheral
US9635496B2 (en) 2014-03-06 2017-04-25 Casio Computer Co., Ltd. Radio communication apparatus, computer readable medium, peripheral, and central
US9445444B2 (en) 2014-03-14 2016-09-13 Casio Computer Co., Ltd. Wireless communication apparatus, non-transitory computer-readable medium, wireless communication method, peripheral apparatus, and central apparatus
US9681258B2 (en) 2014-03-19 2017-06-13 Casio Computer Co., Ltd. Radio communication apparatus, radio communication method, computer-readable medium, slave device, and master device
US9936374B2 (en) 2014-03-19 2018-04-03 Casio Computer Co., Ltd. Radio communication apparatus, radio communication method, computer-readable medium, slave device, and master device
US9648486B2 (en) 2014-03-19 2017-05-09 Casio Computer Co., Ltd. Radio communication apparatus, radio communication method, computer-readable medium, slave device, and master device
US9723546B2 (en) 2014-08-22 2017-08-01 Casio Computer Co., Ltd. Wireless communication device, non-transitory computer-readable recording medium, master device, and slave device
US10834274B2 (en) 2015-02-13 2020-11-10 Canon Kabushiki Kaisha Communication apparatus having first or second state determination, method of controlling the same, and storage medium
JP2016149721A (en) * 2015-02-13 2016-08-18 キヤノン株式会社 Image processing system, control method of same, and program
US10491762B2 (en) 2015-02-13 2019-11-26 Canon Kabushiki Kaisha Communication apparatus having specific state determination method of controlling the same, and storage medium
US11792337B2 (en) 2015-02-13 2023-10-17 Canon Kabushiki Kaisha Communication apparatus having power related predetermined processing, method of controlling the same, and storage medium
US11316988B2 (en) 2015-02-13 2022-04-26 Canon Kabushiki Kaisha Communication apparatus using an advertising signal, method of controlling the same, and storage medium
EP3462254A1 (en) 2017-10-02 2019-04-03 Casio Computer Co., Ltd. Wireless communication device, electronic timepiece, wireless communication method, and storage medium
US11564176B2 (en) 2017-10-02 2023-01-24 Casio Computer Co., Ltd. Wireless communication device, electronic timepiece, wireless communication method, and storage medium
JP2019080272A (en) * 2017-10-27 2019-05-23 日本電信電話株式会社 Mobile sensor relay terminal and mobile sensor relay control method
EP3544338A1 (en) 2018-03-23 2019-09-25 Casio Computer Co., Ltd. Wireless communication device, wireless communication method, and program
JP7095444B2 (en) 2018-07-12 2022-07-05 カシオ計算機株式会社 Wireless communication equipment, wireless communication systems, wireless communication methods, and programs
JP2020010288A (en) * 2018-07-12 2020-01-16 カシオ計算機株式会社 Device, system and method for radio communication, and program
US10972964B2 (en) 2018-07-30 2021-04-06 Casio Computer Co., Ltd. Communication device, scanner terminal, communication system, communication method, and storage medium
US11228894B2 (en) 2018-10-02 2022-01-18 Casio Computer Co., Ltd. Wireless communication apparatus, wireless communication method, and storage medium
EP3634047A1 (en) 2018-10-02 2020-04-08 Casio Computer Co., Ltd. Wireless communication apparatus, electronic timepiece, transmission power control method, and program
US11368923B2 (en) 2018-10-02 2022-06-21 Casio Computer Co., Ltd. Wireless communication apparatus, electronic timepiece, transmission power control method, and storage medium
EP3634019A1 (en) 2018-10-02 2020-04-08 Casio Computer Co., Ltd. Wireless communication apparatus, wireless communication method, and program
EP3634048A1 (en) 2018-10-04 2020-04-08 Casio Computer Co., Ltd. Wireless communication apparatus, wireless communication method, and program
US10959187B2 (en) 2018-10-04 2021-03-23 Casio Computer Co., Ltd. Wireless communication apparatus, wireless communication method, and recording medium
JP7279844B1 (en) 2022-11-11 2023-05-23 三菱電機ビルソリューションズ株式会社 Authentication system, learning device, reasoning device, learning method, reasoning method, learning program, and reasoning program
JP2024070619A (en) * 2022-11-11 2024-05-23 三菱電機ビルソリューションズ株式会社 Authentication system, learning device, inference device, learning method, inference method, learning program, and inference program

Similar Documents

Publication Publication Date Title
JP2012142877A (en) Radio communication apparatus
US11985599B2 (en) Channel monitoring method and device
US10187779B2 (en) Dynamically associated neighbor awareness networking (NAN) discovery windows for fine timing measurement
CN109842937B (en) Information transmission method, network device, terminal, and computer-readable storage medium
US9949164B2 (en) Discontinuous reception (DRX) enhancements in LTE systems
WO2022037664A1 (en) Discontinuous reception (drx) configuration method and apparatus, and device
TWI481213B (en) System and method for facilitating wireless communication
CN109788559B (en) Bandwidth part BWP switching method of asymmetric spectrum, terminal and network equipment
CN106533633B (en) Information processing method, user equipment and base station
CN110300444B (en) Information transmission method, terminal and network equipment
TWI575982B (en) System and method for selective prevention of transmitting a scheduling request
JP2006246357A5 (en)
CN110958088B (en) Communication method and device
JP6532639B1 (en) Communication system, communication apparatus and power saving method
JP4765645B2 (en) Wireless communication apparatus and wireless system
EP4398663A1 (en) Monitoring method and apparatus, wake-up signal transmission method and apparatus, terminal, and network-side device
CA3179183A1 (en) Downlink reception triggering method, terminal and network-side device
JP4651440B2 (en) Wireless communication terminal and method for managing transmission / reception function thereof
EP4280706A1 (en) Resource selection method and apparatus, power-saving processing method and apparatus, and device
CN114501483B (en) Information processing method, device and terminal
EP3312997A1 (en) Fire alarm and fire alarm system
JP2016152457A5 (en) COMMUNICATION DEVICE, ITS CONTROL METHOD, AND PROGRAM
US20190007815A1 (en) Communication apparatus, control method for communication apparatus, and non-transitory computer-readable storage medium
WO2024056018A1 (en) Synchronization information acquisition method, terminal, and network side device
JP2008131467A (en) Communication equipment