JP4908127B2 - Portable radio - Google Patents

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JP4908127B2
JP4908127B2 JP2006255969A JP2006255969A JP4908127B2 JP 4908127 B2 JP4908127 B2 JP 4908127B2 JP 2006255969 A JP2006255969 A JP 2006255969A JP 2006255969 A JP2006255969 A JP 2006255969A JP 4908127 B2 JP4908127 B2 JP 4908127B2
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intermittent reception
synchronization
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JP2008079012A (en
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政則 川村
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Hitachi Kokusai Electric Inc
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    • 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

Description

本発明は携帯無線機、特に間欠受信のパワーセービング(power saving)を行う相手携帯電話機に対して、自己携帯電話機から送信する同期引き込み信号の制御に関する。   The present invention relates to control of a synchronous pull-in signal transmitted from a self-portable phone to a portable radio device, particularly a counterpart mobile phone that performs power saving for intermittent reception.

従来のプレストーク方式による携帯デジタル無線機の構成を図２に示す。アンテナ１で無線周波数信号を受信し、アンテナ共用器２を介し、受信部３で無線周波数信号からベースバンド信号に変換処理し、復調部４でベースバンド信号からｂｉｔデータの復調を行い、制御部５でｂｉｔデータを音声、データに変換出力する。   FIG. 2 shows a configuration of a conventional portable digital radio using the press talk method. The radio frequency signal is received by the antenna 1, the radio frequency signal is converted into a baseband signal by the receiving unit 3 via the antenna duplexer 2, the bit data is demodulated from the baseband signal by the demodulating unit 4, and the control unit In step 5, the bit data is converted into voice and data and output.

また、制御部５に入力した音声、データを、図示していないプレストークスイッチの押圧により発生するＰＴＴ信号をトリガとして、変調部６で変調をかけ、送信部７で無線周波数信号に変換し、アンテナ共用器２を介し、アンテナ１より送信する。   Further, the voice and data input to the control unit 5 are modulated by the modulation unit 6 using a PTT signal generated by pressing of a not-shown press talk switch as a trigger, and converted to a radio frequency signal by the transmission unit 7, It transmits from the antenna 1 via the antenna duplexer 2.

プレストーク方式による携帯デジタル無線機の場合、相手携帯デジタル無線機と非同期に送信されるため、会話の始めから正確に音声出力するためには、プレストーク後に、同期をとるため数フレームの同期引き込み信号を送信し、その後に音声、データを送信する構成が必要である。   In the case of a portable digital radio using the Press Talk method, it is transmitted asynchronously with the other portable digital radio. Therefore, in order to output audio accurately from the beginning of the conversation, several frames of synchronization are pulled in to synchronize after the press talk. A configuration for transmitting a signal and then transmitting voice and data is necessary.

そのため、プレストークによる携帯デジタル無線機の送信フレーム構成は、図３に示すように、数フレームの同期引き込み信号１１とその後に送信する音声、データ１２から構成される。   Therefore, the transmission frame configuration of the portable digital radio by Press Talk is composed of several frames of synchronization pull-in signal 11 and voice and data 12 to be transmitted thereafter, as shown in FIG.

また、携帯無線機では、消費電流による発熱における温度上昇及びバッテリー寿命を延ばす目的で消費電力低減対策が必須である。   In portable radio devices, measures to reduce power consumption are indispensable for the purpose of extending temperature rise and battery life due to heat generation due to current consumption.

この消費電力低減対策として、受信していない状態または受信する必要がない状態時に間欠受信のパワーセービング(power saving)を行う。   As a measure for reducing power consumption, intermittent reception power saving is performed in a state where reception is not performed or reception is not necessary.

パワーセービング(power saving)の動作を、図４で説明すると、携帯電話等の基地局から常に電波を受けて通信を行っているシステムでは、待受け時最低限取得する必要があるチャネル（例えば１８フレームからなる１スーパーフレーム中の１フレーム）のみを受信し、それ以外のフレームに対してはパワーダウンしてパワーセービングすることにより、間欠受信用信号を生成し、間欠受信動作を行う。   The operation of power saving will be described with reference to FIG. 4. In a system in which communication is always performed by receiving radio waves from a base station such as a mobile phone, a channel (for example, 18 frames) that is required to be acquired at the time of standby is minimum. Only one frame in one superframe) is received, and the other frames are powered down and power-saved, thereby generating an intermittent reception signal and performing an intermittent reception operation.

このような方法を使うと、送受信が不要な待受け状態において最大の消費電力低減が可能になる。   When such a method is used, the maximum power consumption can be reduced in a standby state where transmission / reception is not required.

但し、図４に図示のような間欠受信のパワーセービングは、常送している基地局があり、携帯無線機は常に同期を保持している通信システムで可能な方式であり、プレストーク方式による携帯無線機の場合、非同期に送信されるため、同期引き込み時間にかならず数フレーム程度必要となり、パワーセービングしている間に同期引き込み信号がきても受信側では受信できず、話頭切れが発生する。このため、復調可能な全ての無線周波数信号を１００％受信するためには、セービング時間と同期引き込み時間を合わせた長さを有する同期引き込み信号を送信側で送信する必要がある。   However, the power saving for intermittent reception as shown in FIG. 4 is a method that is possible in a communication system in which there is a base station that is constantly sending, and the portable wireless device always maintains synchronization, and is based on the press talk method. In the case of a portable wireless device, since it is transmitted asynchronously, about several frames are required for the synchronization pull-in time, and even if a synchronous pull-in signal is received during power saving, it cannot be received on the receiving side, and the head is cut off. For this reason, in order to receive 100% of all radio frequency signals that can be demodulated, it is necessary to transmit a synchronization pull-in signal having a length that is a sum of the saving time and the synchronization pull-in time on the transmission side.

なお、パワーセービング（バッテリーセービング）を実現した携帯無線機として、例えば特許文献１が挙げられる。   An example of a portable wireless device that realizes power saving (battery saving) is Patent Literature 1.

特開２００１−１４４６７２号公報JP 2001-144672 A

しかしながら、従来のプレストーク方式の携帯無線機は、この同期引き込み信号が固定長となっているため、間欠受信のセービング時間を短くすると、消費電力を無駄に浪費する時間が多くなり、携帯無線機の温度上昇およびバッテリーの寿命が短くなる。逆に、間欠受信のセービング時間を長くすると、低電力化は有効であるが間欠受信していない状態においても同期引き込み用の信号が長くなり、送話者に対して話し始めるタイミングを遅らせることになり通話として快適な会話がなりたたない。   However, the conventional press talk type portable radio device has a fixed length of the synchronous pull-in signal. Therefore, if the saving time of intermittent reception is shortened, the time for wasting power consumption increases, and the portable radio device Temperature rise and battery life will be shortened. Conversely, if the saving time for intermittent reception is lengthened, low power consumption is effective, but the signal for synchronization pull-in becomes longer even when intermittent reception is not being performed, and the timing to start talking to the sender is delayed. There is no comfortable conversation.

本発明の目的は、間欠受信している状態において話頭切れなく受信することができ且つ間欠受信していないときには送話者に対して話し始めるタイミングを遅らせることなく通話を可能とする携帯無線機を提供することにある。   It is an object of the present invention to provide a portable wireless device that can receive a voice without interruption in a state where intermittent reception is being performed, and can perform a call without delaying the timing to start speaking to a sender when intermittent reception is not being performed. It is to provide.

本発明は、送信側に、送信終了から間欠受信へ遷移するまでの所定時間を計時する監視タイマーと、該監視タイマーに連動する可変型同期引き込み信号生成回路を設け、該可変型同期引き込み信号生成回路は、前記監視タイマーが計時開始または計時終了時に、間欠受信のセービング時間と同期引き込み時間を合わせた長さの同期引き込み信号を出力し、前記監視タイマーが計時中には、同期引き込み時間の長さの同期引き込み信号を出力し、出力した前記同期引き込み信号を送信することを特徴とする。   The present invention is provided with a monitoring timer for measuring a predetermined time from the end of transmission to transition to intermittent reception on the transmission side, and a variable synchronization pull-in signal generation circuit linked to the monitoring timer, and the variable synchronization pull-in signal generation The circuit outputs a synchronization pull-in signal having a length that is the sum of the intermittent reception saving time and the synchronization pull-in time when the monitoring timer starts or ends timing. A synchronization pull-in signal is output, and the output synchronization pull-in signal is transmitted.

本発明によれば、間欠受信している状態においても話頭切れなく受信することができ、且つ、間欠受信していない状態では同期引き込み信号を必要な長さ分送る動作であるため、送話者に対して話し始めるタイミングを遅らせることなく最適な通話となり、快適な会話が可能となる。   According to the present invention, since it is possible to receive without interruption even in the state of intermittent reception, and in the state of not receiving intermittent reception, it is an operation to send a synchronous pull-in signal for a necessary length. Therefore, it becomes an optimal call without delaying the timing to start speaking, and a comfortable conversation becomes possible.

また、送信/受信していない状態では間欠受信によるセービング動作により消費電力を低減することができる。   In a state where transmission / reception is not performed, power consumption can be reduced by a saving operation by intermittent reception.

本発明による携帯電話機の実施の形態に係るプレストーク方式による携帯デジタル無線機の構成を図１に示す。図１において、送信側に、送信終了から間欠受信へ遷移するまでの所定時間を計時する監視タイマー８と、監視タイマー８に連動する可変型同期引き込み信号生成回路９を設けてなる。その他は図２と同じである。   FIG. 1 shows a configuration of a portable digital radio using a press talk system according to an embodiment of a cellular phone according to the present invention. In FIG. 1, a monitoring timer 8 for measuring a predetermined time from the end of transmission to transition to intermittent reception and a variable synchronization pull-in signal generation circuit 9 linked to the monitoring timer 8 are provided on the transmission side. Others are the same as FIG.

ここで、可変型同期引き込み信号生成回路９は、監視タイマー８が計時開始または計時終了時に、間欠受信のセービング時間と同期引き込み時間を合わせた長さの同期引き込み信号を出力し、監視タイマー８が計時中には、同期引き込み時間の長さの同期引き込み信号を出力する。   Here, the variable synchronous pull-in signal generation circuit 9 outputs a synchronous pull-in signal having a length that is the sum of the intermittent reception saving time and the synchronous pull-in time when the monitoring timer 8 starts or ends the time counting. During timing, a synchronization pull-in signal having the length of the synchronization pull-in time is output.

出力した同期引き込み信号は、送信部７により、アンテナ共用器２、アンテナ１を介して送信される。   The output synchronization pull-in signal is transmitted by the transmitter 7 via the antenna duplexer 2 and the antenna 1.

監視タイマー８は、間欠受信へ遷移する前の場合、自己以外の相手携帯電話機は間欠受信していない状態すなわち連続受信状態とみなし、間欠受信に遷移した場合は自己以外の相手携帯電話機は間欠受信中とみなす。   The monitoring timer 8 assumes that the other party's mobile phone other than itself is not receiving intermittent reception, that is, the continuous reception state before the transition to intermittent reception. Consider it inside.

可変型同期引き込み信号生成回路９は、監視タイマー８が、自己以外の相手携帯無線機が間欠受信中とみなしている場合は、同期引き込み信号として、間欠受信のセービング時間と同期引き込み時間を合わせた長さを出力し、自己以外の相手携帯無線機が間欠受信していない状態すなわち連続受信状態とみなしている場合は、同期引き込み信号として、同期引き込み時間の長さを出力する。   The variable synchronization pull-in signal generation circuit 9 combines the intermittent reception saving time and the synchronization pull-in time as the synchronization pull-in signal when the monitoring timer 8 considers that the other party's portable radio other than itself is receiving intermittent reception. The length is output, and when the other party's portable wireless device other than the self is not receiving intermittently, that is, it is regarded as a continuous reception state, the length of the synchronization acquisition time is output as a synchronization acquisition signal.

動作は、送信要求がない場合、自己及び相手の全ての携帯無線機は間欠受信動作をしている。   As for the operation, when there is no transmission request, the mobile wireless device of the self and the other party performs an intermittent reception operation.

図示していないプレストークスイッチの押圧により発生するＰＴＴ信号により送信要求があると、要求があった例えば自己携帯無線機は間欠受信動作から送信動作に移行する。   When there is a transmission request by a PTT signal generated by pressing a not-shown press talk switch, for example, the requested self-portable wireless device shifts from an intermittent reception operation to a transmission operation.

この時、この自己携帯無線機は自己以外の相手携帯無線機は間欠受信動作をしているとみなし、間欠受信のセービング時間と同期引き込み時間を合わせた長さの同期引き込み信号を出力する。   At this time, the self-portable wireless device assumes that the other party's mobile wireless device other than itself is performing an intermittent reception operation, and outputs a synchronous pull-in signal having a length that is the sum of the intermittent reception saving time and the synchronous pull-in time.

そして、出力した同期引き込み信号は、送信部７により、アンテナ共用器２、アンテナ１を介して送信される。   The output synchronization pull-in signal is transmitted by the transmitter 7 via the antenna duplexer 2 and the antenna 1.

したがって、自己以外の相手携帯無線機は同期を引き込むことができ、話頭が切れることがなく受信可能となる。   Therefore, the other party's portable wireless devices other than the self can pull in the synchronization, and can receive without interrupting the conversation.

また、この時、監視タイマー８は計時を開始する。監視タイマー８は、所定時間を計時中すなわち間欠受信への移行時間に達する前に、送信要求があった場合は、自己以外の相手無線機も間欠受信していないすなわち連続受信状態とみなし、同期引き込み時間分の長さだけの同期引き込み信号を出力する。   At this time, the monitoring timer 8 starts measuring time. The monitoring timer 8 counts the predetermined time, that is, before the transition time to the intermittent reception is reached, and if there is a transmission request, it is assumed that the other party's radio other than itself is not intermittently received, that is, is in a continuous reception state. A synchronous pull-in signal having a length corresponding to the pull-in time is output.

そして、出力した同期引き込み信号は、送信部７により、アンテナ共用器２、アンテナ１を介して送信される。   The output synchronization pull-in signal is transmitted by the transmitter 7 via the antenna duplexer 2 and the antenna 1.

この状態ではセービング時間分の同期引き込み時間がないため、待ち時間のない通話が可能となる。   In this state, since there is no synchronization pull-in time corresponding to the saving time, a call with no waiting time is possible.

監視タイマー８は、所定時間を計時終了して間欠受信への移行時間に達した時は、間欠受信のセービング時間と同期引き込み時間を合わせた長さの同期引き込み信号を出力する。   When the monitoring timer 8 finishes measuring the predetermined time and reaches the transition time to intermittent reception, the monitoring timer 8 outputs a synchronous pull-in signal having a length that combines the intermittent reception saving time and the synchronous pull-in time.

そして、出力した同期引き込み信号は、送信部７により、アンテナ共用器２、アンテナ１を介して送信される。   The output synchronization pull-in signal is transmitted by the transmitter 7 via the antenna duplexer 2 and the antenna 1.

このことで、自己及び相手の全ての携帯無線機は間欠受信によるセービング動作に移行する。   As a result, the portable wireless device of itself and the other party shifts to a saving operation by intermittent reception.

このように、本実施の形態では、間欠受信している状態においては、間欠受信のセービング時間と同期引き込み時間を合わせた長さの同期引き込み信号を出力し、出力した同期引き込み信号を送信するので、相手携帯無線機は話頭切れなく受信することができ、且つ、間欠受信していない状態においては、同期引き込み時間の長さの同期引き込み信号を出力し、出力した同期引き込み信号を送信するので、相手携帯無線機は、送話者に対して話し始めるタイミングを遅らせることなく最適な通話となり、快適な会話が可能となる。   As described above, in the present embodiment, in the state of intermittent reception, a synchronous pull-in signal having a length that is the sum of the intermittent reception saving time and the synchronous pull-in time is output, and the output synchronous pull-in signal is transmitted. In the state where the other party's portable wireless device can receive without interruption, and in the state of not receiving intermittently, it outputs a synchronous pull-in signal of the length of the synchronous pull-in time, and transmits the output synchronous pull-in signal, The other party's portable wireless device makes an optimal call without delaying the timing to start talking to the sender, and allows a comfortable conversation.

また、送信/受信していない状態では間欠受信によるセービング動作により消費電力を低減することができる。   In a state where transmission / reception is not performed, power consumption can be reduced by a saving operation by intermittent reception.

本発明による携帯電話機の実施の形態に係るプレストーク方式による携帯デジタル無線機の構成を示す図である。It is a figure which shows the structure of the portable digital radio by the press talk system which concerns on embodiment of the mobile telephone by this invention. 従来のプレストーク方式による携帯デジタル無線機の構成を示す図である。It is a figure which shows the structure of the portable digital radio by the conventional press talk system. プレストークによる携帯デジタル無線機の送信フレーム構成を示す図である。It is a figure which shows the transmission frame structure of the portable digital radio by a press talk. パワーセービング(power saving)の動作を示す図である。It is a figure which shows the operation | movement of a power saving (power saving).

符号の説明Explanation of symbols

１：アンテナ、２：アンテナ共用器、３：受信部、４：復調部、５：制御部、６：変調部、７：送信部、８：監視タイマー、９：可変型同期引き込み信号生成回路、１１：同期引き込み信号、１２：音声、データ。   1: antenna, 2: antenna duplexer, 3: receiving unit, 4: demodulating unit, 5: control unit, 6: modulating unit, 7: transmitting unit, 8: monitoring timer, 9: variable synchronization pull-in signal generation circuit, 11: Synchronization pull-in signal, 12: Voice, data.

Claims (1)

送信側に、送信終了から間欠受信へ遷移するまでの所定時間を計時し、受信側が連続受信であるか間欠受信であるかみなす監視タイマーと、該監視タイマーに連動する可変型同期引き込み信号生成回路と、該可変型同期引き込み信号生成回路から出力された同期引き込み信号を送信する送信部と設け、該可変型同期引き込み信号生成回路は、プレストークスイッチによる送信要求があったとき、前記監視タイマーが計時終了して前記受信側が間欠受信とみなせるときは間欠受信のセービング時間と同期引き込み時間を合わせた長さの同期引き込み信号を出力し、前記監視タイマーが計時中で前記受信側が連続受信とみなせるときは同期引き込み時間の長さの同期引き込み信号を出力することを特徴とする携帯無線機。 A monitoring timer that counts a predetermined time from the end of transmission to the transition to intermittent reception on the transmission side, and that determines whether the reception side is continuous reception or intermittent reception, and a variable synchronization pull-in signal generation circuit that is linked to the monitoring timer when provided a transmitter for transmitting a synchronization lock signal output from the movable variations pull-in signal generation circuit, the movable variations pull-in signal generation circuit, when there is a transmission request by the press-to-talk switch, the monitoring timer completed the receiving side outputs the length of the pull-in signal obtained by combining the saving time and synchronization pull-in time of intermittent reception when regarded as intermittent reception time meter, the monitoring timer can be regarded as the receiving side successively received in timed portable radio and said output to Rukoto the synchronization pull-in signal length of the synchronization pull-in time when.
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