WO2016152803A1 - Communication system, communication terminal, communication method, and program - Google Patents

Communication system, communication terminal, communication method, and program Download PDF

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Publication number
WO2016152803A1
WO2016152803A1 PCT/JP2016/058789 JP2016058789W WO2016152803A1 WO 2016152803 A1 WO2016152803 A1 WO 2016152803A1 JP 2016058789 W JP2016058789 W JP 2016058789W WO 2016152803 A1 WO2016152803 A1 WO 2016152803A1
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data
communication
terminal
period
reception timing
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PCT/JP2016/058789
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French (fr)
Japanese (ja)
Inventor
山田　徹
晃 亀井
芹沢　昌宏
穂高 菅野
長谷川　聡
政志 下間
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日本電気株式会社
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Publication of WO2016152803A1 publication Critical patent/WO2016152803A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • 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

Definitions

  • the present invention relates to a communication system, a wireless terminal, a communication method, and a program.
  • 3GPP LTE Long Term Evolution
  • DRX discontinuous reception
  • References 1, 2 a period constituted by a reception period (On-Duration) called DRX cycle and a subsequent non-reception period (Opportunity for DRX) is defined, and DRX is realized by repeating these periods.
  • the wireless terminal needs to always receive a downlink control channel (PDCCH: Physical Downlink Control Channel) in On-duration, and may not receive PDCCH in Opportunity for DRX. If the wireless terminal fails to receive data during the On-Duration period and the data is retransmitted after the On-Duration period, the period for receiving the PDCCH is extended.
  • PDCCH Physical Downlink Control Channel
  • the period during which the radio terminal in DRX operation receives the PDCCH is called Active Time
  • On-Duration is the minimum value of Active Time.
  • two DRX states (levels) of “ShortDRX” and “LongDRX” having different lengths of Opportunity for DRX can be set for each wireless terminal.
  • DRX state control DRX state control
  • a timer drxShortCycleTimer
  • the DRX state (level) suitable for the data reception frequency of the wireless terminal can be set, and the power consumption of the wireless terminal can be reduced.
  • 3GPP TS36.300v900 Internet ⁇ URL> http: www.3gpp.org/ftp/Specs/html-info/36300.html
  • 3GPP TS36.321v860 Internet ⁇ URL> http: www.3gpp.org/ftp/Specs/html-info/36321.html
  • MTC Machine Type Communication
  • the communication frequency is lower than that of a wireless communication with a normal mobile terminal or PC (Personal Computer) (for example, once a day, once a week, once a month, etc.)
  • PC Personal Computer
  • Such an MTC terminal is required to transmit measurement data of the MTC terminal at different times and cycles from different applications by a plurality of external users on the network side.
  • the MTC terminal since the MTC terminal does not know at which timing a transmission request is made in the above two types of cycles, ShortDRX and LongDRX, the paging channel must always be monitored in order to receive the transmission request. Therefore, there are cases where it is not possible to reduce the power consumption of the MTC terminal by DRX.
  • the present invention has been invented in view of the above problems, and is to realize power saving of a wireless terminal while quickly responding to a transmission request on the network side.
  • One aspect of the present invention for solving the above problem is a communication system, in which a collection unit that collects a plurality of transmission cycles in which data is transmitted from an external network side to a terminal, and a communication unit of the terminal includes the data Deriving means for deriving a reception timing at which the data can be received in the collected period, and control means for controlling the communication means at the derived reception timing so that an active period for receiving the data is started And have.
  • One aspect of the present invention for solving the above-described problems is a communication terminal that receives data in a plurality of transmission cycles in which data is transmitted and received from the external network side to the own terminal. And control means for controlling the communication means so that an active period for receiving the data is started at the derived reception timing.
  • One aspect of the present invention for solving the above problem is a communication control apparatus, wherein a collection unit that collects a plurality of transmission cycles in which data is transmitted from an external network side to a terminal, and a communication unit of the terminal include the communication unit Deriving means for deriving reception timing for receiving data at the collected period.
  • One aspect of the present invention for solving the above problem is a communication method, a collection step of collecting a plurality of transmission cycles in which data is transmitted from an external network side to a terminal, and a communication unit of the terminal includes the data And a control step for controlling the communication unit so as to start an active period for receiving the data at the derived reception timing. .
  • One aspect of the present invention for solving the above-described problem is a program for a communication terminal, wherein the program transmits data to the communication terminal, communication means for transmitting and receiving data, and data from the external network side to the terminal.
  • the communication means functions as a control means for controlling the active period for receiving the data to start at a reception timing derived so as to be received at a plurality of transmission periods.
  • the power consumption of the MTC device can be reduced.
  • FIG. 1 is a schematic diagram for explaining the features of the present invention.
  • FIG. 2 is a schematic diagram of the communication system of the present invention.
  • FIG. 3 is a diagram for explaining operation control of intermittent reception.
  • FIG. 4 is a block diagram of a terminal in the first embodiment.
  • FIG. 5 is a flowchart for explaining the operation in the first embodiment.
  • FIG. 6 is a diagram for explaining the operation of the control unit in the first embodiment.
  • FIG. 7 is a flowchart for explaining the operation in the second embodiment.
  • FIG. 8 is a flowchart for explaining the operation in the third embodiment.
  • FIG. 9 is a diagram for explaining the operation of the control unit in the third embodiment.
  • FIG. 10 is a diagram illustrating another aspect of the wireless terminal 1 in the wireless communication system according to the present embodiment.
  • FIG. 11 is a diagram showing another aspect of the base station and the wireless network in the wireless communication system of the present embodiment.
  • FIG. 1 is a block diagram for explaining the features of the present invention.
  • the deriving unit 2 is characterized by deriving the minimum reception timing that can be received in the period collected by the collecting unit 1.
  • control unit 3 detects the end of data transmission from the external network side, the control unit 3 shifts the communication unit 4 to an inactive period.
  • control unit 3 is characterized by causing the communication unit 4 to transition to an inactive period when data transmission is completed.
  • the power consumption of the MTC device can be reduced.
  • FIG. 2 is a schematic diagram of the communication system according to the first embodiment of the present invention.
  • the communication system of the present invention includes a terminal 10, an eNB (evolved NodeB) 11, an MME (Mobility Management Entity) 12, an S-GW (Serving Gate Way) 13, a P-GW (Packetdata Network Gate Way). ) 14 and an application server 15 on the external network.
  • eNB evolved NodeB
  • MME Mobility Management Entity
  • S-GW Serving Gate Way
  • P-GW Packetdata Network Gate Way
  • the terminal 10 is a terminal used for MTC and is an MTC device.
  • the terminal 10 has the communication part 4 and the control part 3 as shown in FIG. Under the control of the control unit 3, the communication unit 4 of the terminal 10 performs location registration with the MME or S-GW via the eNB 11 serving as a radio base station, and the application server 15 on the external network via the P-GW. connect.
  • the DRX cycle which is the intermittent reception cycle, does not receive the PDCCH and the period during which the downlink control channel PDCCH (Physical Downlink Control Channel) must be continuously received (On-Duration). It is composed of a period (Opportunity for DRX).
  • the former is also called a Wake up period or active period, and the latter is also called a Sleep period.
  • the latter may be a period in which no PDCCH is received or a period in which no PDCCH should be received.
  • the data is transmitted by PDSCH (Physical Downlink Shared Channel), and PDSCH scheduling information is included in the PDCCH. Therefore, after receiving the PDCCH and detecting the scheduling information, the designated data can be received.
  • PDSCH Physical Downlink Shared Channel
  • ShortDRX and LongDRX have the same Wake up period, the lengths of periods during which PDCCHs other than the Wake up period need not be received are different, and the interval of the Sleep DRX is set to be shorter.
  • Long DRX is an integral multiple of Short DRX.
  • the length of the Wake up period and DRX cycle can be set, for example, in the Wake up period from 10 ms to 10 ms, and the DRX cycle can be set from 2 ms (short DRX minimum) to 2560 ms (long DRX maximum). Dozens of settings are possible for ShortDRX and LongDRX.
  • the application server 15 a plurality of applications are executed, and a cycle for transmitting data to the terminal 10 is set for each application.
  • the application server 15 includes a collection unit 1 and a derivation unit 2, and collects transmission cycles for transmitting data of each application.
  • the collection unit 1 may obtain the transmission cycle by monitoring each application and analyzing the transmission cycle, or may be obtained by inputting the transmission cycle to the server administrator.
  • the collection unit 1 first collects the transmission period of each application (step 501). Based on the collected application transmission cycle, the deriving unit 2 derives the timing at which the Wake up period for intermittent reception of the communication unit 4 is started (step 502). The control unit 3 receives this derived timing, and controls the start of the wake up period of the communication unit based on this timing (step 503). The communication unit 4 receives data from the application server 15 during the Wake up period under the control of the control unit 3 (step 504).
  • FIG. 6 is a diagram for explaining an operation of controlling the reception Wake up period of the terminal 10 according to the present embodiment.
  • the application 1 and the application 2 are executed in the application server 15.
  • the application 1 transmits a data transmission request at a timing at which four Wake up periods are provided in a predetermined period.
  • the application 2 transmits a data transmission request at a timing at which three wake up periods are provided in a predetermined period.
  • the collection unit 1 collects different transmission cycles for each application in this way. And the derivation
  • the control unit 3 controls the communication unit 4 so that the Wake up period is started at the timing derived by the deriving unit 2 from the communication unit 4 that was received in the timing period of the dotted rectangular wave in FIG. To do.
  • the present invention is not limited to this, and it is obvious that the control can be performed even when the sleep periods are different from each other. is there.
  • the timing for starting the Wake up period of the communication unit 4 is controlled in synchronization with the transmission cycle of the application server 15, so that the dotted line in FIG. Compared with the reception method indicated by the rectangular wave, the power consumption of the MTC device can be reduced.
  • the configuration in which the collection unit 1 and the derivation unit 2 are provided in the application server 15 has been described.
  • the control unit having the collection unit 1 and the derivation unit 2 may be configured in the terminal 10.
  • the structure provided may be sufficient.
  • the collection unit 1 collects the period in which each application of the application device 15 transmits data.
  • the information collected by the collection unit 1 is not the cycle itself, but the transmission time may be collected and analyzed to derive the cycle.
  • the transmission unit of the application server 15 transmits transmission end information indicating the end of data to be transmitted to the terminal 10.
  • the transmission end information is transmitted by (1) transmitting to the last transmission data to be transmitted to the terminal 10.
  • the determination by the application server 15 as to whether the transmission data to be transmitted to the terminal 10 is complete for example, (1) A method in which the transmission unit of the application server 15 determines that the transmission data is complete when there is no transmission data to be transmitted to the terminal 10 in the transmission buffer; (2) There is a method of transmitting a transmission data completion signal (transmission end information) to the eNB 11 when the transmission of transmission data to be transmitted to the terminal 10 is completed, and the eNB 11 transfers the transmission end information to the terminal 10.
  • a transmission data completion signal transmission end information
  • control unit 3 of the terminal 10 receives the transmission end information during the reception period (Wake up period) in the intermittent reception, even if there is a remaining period in the reception period, the control unit 3 stops the data reception of the intermittent reception and does not receive it.
  • the communication process is controlled by shifting to the period, that is, the sleep period.
  • control unit 3 receives data through the processing described in the above embodiment (steps 501 to 504).
  • the control unit 3 monitors whether or not the transmission end information has been received, and if received, stops the intermittent reception of data and shifts to the sleep period (step 701).
  • reception power consumption of the MTC device can be reduced.
  • FIG. 8 is a flowchart of the operation of the present embodiment
  • FIG. 9 is a diagram for explaining the operation of controlling the transmission wake up period of the terminal 10 of the present embodiment.
  • the control unit 3 sets and controls the Wake up period of the reception cycle through the processing described in the first embodiment, and receives a data transmission request from the application server 15 (steps 501 to 503).
  • control unit 3 sets and controls the Wake up period of the transmission cycle so as to synchronize with the Wake Up period of the reception cycle (step 801).
  • the communication unit 4 transmits data to the application server 15 at the timing of the Wake up period controlled by the control unit 3 (step 802).
  • the MTC device since the Wake up period for transmission / reception of the terminal 10 is the same and the power-on time of the communication function of the terminal 10 is also the same, the MTC device does not consume excessive power.
  • the transmission Wake up period of the present embodiment may be shifted to the Sleep period when there is no transmission data, as in the second embodiment.
  • control unit 3 monitors whether or not there is transmission data in the transmission buffer, determines that the transmission data is complete when there is no transmission data, and shifts to the sleep period.
  • the power of the communication unit itself of the terminal may be turned off during the sleep period.
  • the present invention described above can be configured by hardware as apparent from the above description, but can also be realized by causing an information processing apparatus (CPU) to perform each process by a computer program. It is. In this case, functions and operations similar to those of the above-described embodiment are realized by a processor that operates according to a program stored in the program memory.
  • CPU information processing apparatus
  • the wireless terminal 1 can be realized by a computer system including a memory 100 and a CPU 101 as shown in FIG.
  • the memory 100 stores a program for performing processing corresponding to the control unit 3 and the communication unit 4 described above. Then, the functions of the control unit 3 and the communication unit 4 are realized by the CPU 101 executing the program stored in the memory 100.
  • the application server 15 having the collection unit 1 and the derivation unit 2 can be realized by a computer system including a memory 200 and a CPU 201 as shown in FIG.
  • the memory 200 stores a program for performing processing corresponding to the collection unit 1 and the derivation unit 2 described above.
  • the functions of the collection unit 1 and the derivation unit 2 are realized by the CPU 201 executing the program stored in the memory 200.
  • a communication system A collecting means for collecting a plurality of transmission cycles in which data is transmitted from the external network side to the terminal; Derivation means for deriving a reception timing at which the communication means of the terminal receives the data at the collected period; A communication system comprising: control means for controlling the communication means so that an active period for receiving the data is started at the derived reception timing.
  • Appendix 2 The communication system according to appendix 1, wherein the deriving unit derives a minimum reception timing to be received at the collected period.
  • Appendix 4 The communication system according to any one of appendix 1 to appendix 3, wherein the control unit performs control so that an active period in which the communication unit transmits data is started at the derived reception timing.
  • the collecting means collects the time when data from the external network side is transmitted, The communication system according to any one of appendix 1 to appendix 5, wherein the derivation unit controls the active period to start at the collected time.
  • a communication terminal A communication means for transmitting and receiving data; Control means for controlling the communication means so that an active period for receiving the data is started at a reception timing derived so as to be received at a plurality of transmission cycles in which data is transmitted from the external network side to the terminal.
  • a communication terminal A communication terminal.
  • a communication control device A collecting means for collecting a plurality of transmission cycles in which data is transmitted from the external network side to the terminal; Derivation means for deriving a reception timing at which the communication means of the terminal receives the data at the collected period; A communication control device.
  • a communication method A collection step of collecting a plurality of transmission cycles in which data is transmitted from the external network side to the terminal; A derivation step of deriving a reception timing at which the communication unit of the terminal receives the data at the collected period; And a control step of controlling the communication unit so that an active period for receiving the data is started at the derived reception timing.
  • a communication terminal Consisting of memory and processor, The processor is Communication processing to send and receive data; Control processing for controlling the communication means so that an active period for receiving the data is started at a reception timing derived so as to be received at a plurality of transmission cycles in which data is transmitted from the external network side to the terminal.
  • a communication terminal that executes
  • a communication control device Consisting of memory and processor,
  • the processor is A collection process for collecting multiple transmission cycles in which data is transmitted from the external network side to the terminal;
  • a derivation process for deriving a reception timing at which the communication means of the terminal receives the data at the collected period;
  • Communication control device for executing.

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Abstract

The present invention is capable of conserving power in a wireless terminal while quickly responding to a network-side transmission request. This communication system has: a collection means for collecting a plurality of transmission periods during which data is transmitted to a terminal from an external network side; a derivation means for deriving the reception timing at which a communication means of the terminal receives the data during the collected periods; and a control means for controlling the communication means in a manner such that the active interval for receiving the data starts at the derived reception timing.

Description

通信システム、通信端末、通信方法及びプログラムCommunication system, communication terminal, communication method and program
　本発明は、通信システム、無線端末、通信方法及びプログラムに関する。 The present invention relates to a communication system, a wireless terminal, a communication method, and a program.
　次世代のセルラシステムの１つである３ＧＰＰ　ＬＴＥ（Ｌｏｎｇ　Ｔｅｒｍ　Ｅｖｏｌｕｔｉｏｎ）では、無線端末の消費電力の削減のため、無線端末の間欠受信（ＤＲＸ：Ｄｉｓｃｏｎｔｉｎｕｏｕｓ　Ｒｅｃｅｐｔｉｏｎ）の機能がサポートされている（非特許文献１、２）。ＬＴＥでは、ＤＲＸ　ｃｙｃｌｅと呼ばれる受信期間（Ｏｎ－Ｄｕｒａｔｉｏｎ）とそれに続く非受信期間（Ｏｐｐｏｒｔｕｎｉｔｙ　ｆｏｒ　ＤＲＸ）とから構成される期間が定義され、これらの期間を繰り返すことでＤＲＸを実現する。 3GPP LTE (Long Term Evolution), one of the next generation cellular systems, supports the function of discontinuous reception (DRX) for reducing wireless terminal power consumption (non-patented). References 1, 2). In LTE, a period constituted by a reception period (On-Duration) called DRX cycle and a subsequent non-reception period (Opportunity for DRX) is defined, and DRX is realized by repeating these periods.
　無線端末は、Ｏｎ－ｄｕｒａｔｉｏｎでは下り制御チャネル（ＰＤＣＣＨ：Ｐｈｙｓｉｃａｌ　Ｄｏｗｎｌｉｎｋ　Ｃｏｎｔｒｏｌ　Ｃｈａｎｎｅｌ）を常に受信する必要があり、Ｏｐｐｏｒｔｕｎｉｔｙ　ｆｏｒ　ＤＲＸではＰＤＣＣＨを受信しなくてよい。なお、無線端末がＯｎ－Ｄｕｒａｔｉｏｎ期間中にデータ受信に失敗し、Ｏｎ－Ｄｕｒａｔｉｏｎ期間以降に当該データが再送される場合には、ＰＤＣＣＨを受信する期間を延長する。 The wireless terminal needs to always receive a downlink control channel (PDCCH: Physical Downlink Control Channel) in On-duration, and may not receive PDCCH in Opportunity for DRX. If the wireless terminal fails to receive data during the On-Duration period and the data is retransmitted after the On-Duration period, the period for receiving the PDCCH is extended.
　ここで、ＤＲＸ動作中の無線端末がＰＤＣＣＨを受信する期間をＡｃｔｉｖｅ　Ｔｉｍｅと呼び、Ｏｎ－ＤｕｒａｔｉｏｎはＡｃｔｉｖｅ　Ｔｉｍｅの最小値である。さらに無線端末毎に、Ｏｐｐｏｒｔｕｎｉｔｙ　ｆｏｒ　ＤＲＸの長さが異なる「ＳｈｏｒｔＤＲＸ」と「ＬｏｎｇＤＲＸ」という２つのＤＲＸ状態（レベル）が設定可能である。ＬＴＥでは、ＳｈｏｒｔＤＲＸ状態の無線端末が一定期間データ受信を行わなかった場合、ＬｏｎｇＤＲＸ状態に遷移するＤＲＸ状態制御（ＤＲＸ　ｓｔａｔｅ　ｃｏｎｔｒｏｌ）を行う。また、ＳｈｏｒｔＤＲＸからＬｏｎｇＤＲＸに状態遷移する判定に、タイマー（ｄｒｘＳｈｏｒｔＣｙｃｌｅＴｉｍｅｒ）を用いる。これにより、無線端末のデータ受信頻度に適したＤＲＸ状態（レベル）を設定でき、無線端末の消費電力の削減が可能になる。 Here, the period during which the radio terminal in DRX operation receives the PDCCH is called Active Time, and On-Duration is the minimum value of Active Time. Furthermore, two DRX states (levels) of “ShortDRX” and “LongDRX” having different lengths of Opportunity for DRX can be set for each wireless terminal. In LTE, when a wireless terminal in the Short DRX state does not receive data for a certain period, DRX state control (DRX state control) for transitioning to the Long DRX state is performed. In addition, a timer (drxShortCycleTimer) is used for determination of state transition from ShortDRX to LongDRX. Thereby, the DRX state (level) suitable for the data reception frequency of the wireless terminal can be set, and the power consumption of the wireless terminal can be reduced.
　近年では、メーター、自動販売機、電子広告などのような人が直接介在しないＭＴＣ（Ｍａｃｈｉｎｅ　Ｔｙｐｅ　Ｃｏｍｍｕｎｉｃａｔｉｏｎ）の利用が広がりを見せている。このようなＭＴＣで用いられるＭＴＣ端末では、通信頻度が通常の携帯端末やＰＣ（Ｐｅｒｓｏｎａｌ　Ｃｏｍｐｕｔｅｒ）での無線通信と比較すると低く(例えば１日１回、週１回、月１回、など)、且つ、一度の通信に利用するデータ量も多くない。 In recent years, the use of MTC (Machine Type Communication), such as meters, vending machines, electronic advertisements, etc., which do not involve humans directly, has been spreading. In the MTC terminal used in such MTC, the communication frequency is lower than that of a wireless communication with a normal mobile terminal or PC (Personal Computer) (for example, once a day, once a week, once a month, etc.) In addition, the amount of data used for one communication is not large.
　このようなＭＴＣ端末は、ネットワーク側の外部の複数のユーザが異なるアプリケーションから、それぞれ異なる時刻及び周期で、ＭＴＣ端末の測定データを送信するように要求される。この場合、上記のＳｈｏｒｔＤＲＸとＬｏｎｇＤＲＸの２種類のサイクルでは、どのタイミングで送信要求があるかＭＴＣ端末側ではわからないため、送信要求を受信するために常にページングチャネルを監視しなければならない。そのため、ＤＲＸによるＭＴＣ端末の消費電力の削減が望めない場合がある。 Such an MTC terminal is required to transmit measurement data of the MTC terminal at different times and cycles from different applications by a plurality of external users on the network side. In this case, since the MTC terminal does not know at which timing a transmission request is made in the above two types of cycles, ShortDRX and LongDRX, the paging channel must always be monitored in order to receive the transmission request. Therefore, there are cases where it is not possible to reduce the power consumption of the MTC terminal by DRX.
　そこで、本願発明は、上記問題点に鑑みて発明されたものであって、ネットワーク側の送信要求に迅速に対応しながら、無線端末の省電力を実現することにある。 Therefore, the present invention has been invented in view of the above problems, and is to realize power saving of a wireless terminal while quickly responding to a transmission request on the network side.
　上記課題を解決するための本願発明の一態様は、通信システムであって、外部ネットワーク側から端末にデータが送信される複数の送信周期を収集する収集手段と、前記端末の通信手段が前記データを、前記収集した周期で受信することができる受信タイミングを導出する導出手段と、前記導出した受信タイミングで、前記通信手段を、前記データを受信するアクティブ期間が開始されるように制御する制御手段とを有する。 One aspect of the present invention for solving the above problem is a communication system, in which a collection unit that collects a plurality of transmission cycles in which data is transmitted from an external network side to a terminal, and a communication unit of the terminal includes the data Deriving means for deriving a reception timing at which the data can be received in the collected period, and control means for controlling the communication means at the derived reception timing so that an active period for receiving the data is started And have.
　上記課題を解決するための本願発明の一態様は、通信端末であって、データの送受信を行う通信手段と、外部ネットワーク側から自端末にデータが送信される複数の送信周期で受信するように導出された受信タイミングで、前記通信手段を、前記データを受信するアクティブ期間が開始されるように制御する制御手段とを有する。 One aspect of the present invention for solving the above-described problems is a communication terminal that receives data in a plurality of transmission cycles in which data is transmitted and received from the external network side to the own terminal. And control means for controlling the communication means so that an active period for receiving the data is started at the derived reception timing.
　上記課題を解決するための本願発明の一態様は、通信制御装置であって、外部ネットワーク側から端末にデータが送信される複数の送信周期を収集する収集手段と、前記端末の通信手段が前記データを、前記収集した周期で受信する受信タイミングを導出する導出手段とを有する。 One aspect of the present invention for solving the above problem is a communication control apparatus, wherein a collection unit that collects a plurality of transmission cycles in which data is transmitted from an external network side to a terminal, and a communication unit of the terminal include the communication unit Deriving means for deriving reception timing for receiving data at the collected period.
　上記課題を解決するための本願発明の一態様は、通信方法であって、外部ネットワーク側から端末にデータが送信される複数の送信周期を収集する収集ステップと、前記端末の通信部が前記データを、前記収集した周期で受信する受信タイミングを導出する導出ステップと、前記導出した受信タイミングで、前記通信部を、前記データを受信するアクティブ期間が開始されるように制御する制御ステップとを有する。 One aspect of the present invention for solving the above problem is a communication method, a collection step of collecting a plurality of transmission cycles in which data is transmitted from an external network side to a terminal, and a communication unit of the terminal includes the data And a control step for controlling the communication unit so as to start an active period for receiving the data at the derived reception timing. .
　上記課題を解決するための本願発明の一態様は、通信端末のプログラムであって、前記プログラムは前記通信端末を、データの送受信を行う通信手段と、外部ネットワーク側から自端末にデータが送信される複数の送信周期で受信するように導出された受信タイミングで、前記通信手段を、前記データを受信するアクティブ期間が開始されるように制御する制御手段として機能させる。 One aspect of the present invention for solving the above-described problem is a program for a communication terminal, wherein the program transmits data to the communication terminal, communication means for transmitting and receiving data, and data from the external network side to the terminal. The communication means functions as a control means for controlling the active period for receiving the data to start at a reception timing derived so as to be received at a plurality of transmission periods.
　上記課題を解決するための本願発明の一態様は、通信制御装置のプログラムであって、前記プログラムは前記通信制御装置を、外部ネットワーク側から端末にデータが送信される複数の送信周期を収集する収集手段と、前記端末の通信手段が前記データを、前記収集した周期で受信する受信タイミングを導出する導出手段と、して機能させる。 One aspect of the present invention for solving the above-described problems is a program for a communication control apparatus, which collects a plurality of transmission cycles in which data is transmitted from the external network side to a terminal. The collecting means and the communication means of the terminal function as a derivation means for deriving a reception timing for receiving the data at the collected period.
　本発明によると、ＭＴＣデバイスの消費電力を削減することができる。 According to the present invention, the power consumption of the MTC device can be reduced.
図１は、本発明の特徴を説明するための概要図である。FIG. 1 is a schematic diagram for explaining the features of the present invention. 図２は、本発明の通信システムの概要図である。FIG. 2 is a schematic diagram of the communication system of the present invention. 図３は、間欠受信の動作制御を説明するための図である。FIG. 3 is a diagram for explaining operation control of intermittent reception. 図４は、実施の形態１における端末のブロック図である。FIG. 4 is a block diagram of a terminal in the first embodiment. 図５は、実施の形態１における動作を説明するためのフローチャートである。FIG. 5 is a flowchart for explaining the operation in the first embodiment. 図６は、実施の形態１における制御部の動作を説明するための図である。FIG. 6 is a diagram for explaining the operation of the control unit in the first embodiment. 図７は、実施の形態２における動作を説明するためのフローチャートである。FIG. 7 is a flowchart for explaining the operation in the second embodiment. 図８は、実施の形態３における動作を説明するためのフローチャートである。FIG. 8 is a flowchart for explaining the operation in the third embodiment. 図９は、実施の形態３における制御部の動作を説明するための図である。FIG. 9 is a diagram for explaining the operation of the control unit in the third embodiment. 図１０は本実施の形態の無線通信システムにおける無線端末１の他の態様を示す図である。FIG. 10 is a diagram illustrating another aspect of the wireless terminal 1 in the wireless communication system according to the present embodiment. 図１１は本実施の形態の無線通信システムにおける基地局や無線ネットワークの他の態様を示す図である。FIG. 11 is a diagram showing another aspect of the base station and the wireless network in the wireless communication system of the present embodiment.
　本発明の概要を説明する。図１は本発明の特徴を説明するためのブロック図である。 The outline of the present invention will be described. FIG. 1 is a block diagram for explaining the features of the present invention.
　本発明は、図１に示す如く、外部ネットワーク側から端末にデータが送信される複数の送信周期を収集する収集部１と、端末の通信部４がデータを、収集した周期で受信することができる受信タイミングを導出する導出部２と、導出した受信タイミングで、データを受信するアクティブ期間が開始されるように通信部４を制御する制御部３とを有することを特徴とする。 In the present invention, as shown in FIG. 1, the collection unit 1 that collects a plurality of transmission cycles in which data is transmitted from the external network side to the terminal, and the communication unit 4 of the terminal receive the data at the collected cycle. And a control unit 3 that controls the communication unit 4 so that an active period for receiving data is started at the derived reception timing.
　また、導出部２は、収集部１が収集した周期で受信することができる最小の受信タイミングを導出することを特徴とする。 Further, the deriving unit 2 is characterized by deriving the minimum reception timing that can be received in the period collected by the collecting unit 1.
　また、制御部３は、外部ネットワーク側からのデータの送信終了を検出すると、通信部４を非アクティブ期間に遷移させることを特徴とする。 Further, when the control unit 3 detects the end of data transmission from the external network side, the control unit 3 shifts the communication unit 4 to an inactive period.
　また、制御部３は、導出部２が導出した受信タイミングで、通信部４がデータを送信するアクティブ期間が開始されるように制御することを特徴とする。 Further, the control unit 3 is characterized in that the control is performed so that an active period in which the communication unit 4 transmits data is started at the reception timing derived by the deriving unit 2.
　また、制御部３は、データの送信が完了すると、通信部４を非アクティブ期間に遷移させることを特徴とする。 Further, the control unit 3 is characterized by causing the communication unit 4 to transition to an inactive period when data transmission is completed.
　また、収集部１は外部ネットワーク側からのデータが送信される時刻を収集し、導出部２は収集部１が収集した時刻に、受信のアクティブ期間が開始されるように制御することを特徴とする。 The collection unit 1 collects the time when data from the external network is transmitted, and the derivation unit 2 controls the reception active period to start at the time collected by the collection unit 1. To do.
　本発明によると、ＭＴＣデバイスの消費電力を削減することができる。 According to the present invention, the power consumption of the MTC device can be reduced.
　続いて、本発明の実施の形態について、図面を参照して詳細に説明する。 Subsequently, embodiments of the present invention will be described in detail with reference to the drawings.
〈実施の形態１〉
　図２は、本発明の実施の形態１の通信システムの概要図である。 <Embodiment 1>
FIG. 2 is a schematic diagram of the communication system according to the first embodiment of the present invention.
　本発明の通信システムは、図２に示すように、端末１０、ｅＮＢ（ｅｖｏｌｖｅｄ　ＮｏｄｅＢ）１１、ＭＭＥ（Ｍｏｂｉｌｉｔｙ　Ｍａｎａｇｅｍｅｎｔ　Ｅｎｔｉｔｉｙ）１２、Ｓ－ＧＷ（Ｓｅｒｖｉｎｇ　Ｇａｔｅ　Ｗａｙ）１３、Ｐ－ＧＷ（Ｐａｃｋｅｔｄａｔａ　Ｎｅｔｗｏｒｋ　Ｇａｔｅ　Ｗａｙ）１４、及び外部ネットワーク上のアプリケーションサーバ１５を有する。 As shown in FIG. 2, the communication system of the present invention includes a terminal 10, an eNB (evolved NodeB) 11, an MME (Mobility Management Entity) 12, an S-GW (Serving Gate Way) 13, a P-GW (Packetdata Network Gate Way). ) 14 and an application server 15 on the external network.
　端末１０は、ＭＴＣに用いられる端末であり、ＭＴＣデバイスである。端末１０は、図３に示す通り通信部４と制御部３とを有する。端末１０の通信部４は制御部３の制御のもと、無線基地局であるｅＮＢ１１を介してＭＭＥやＳ－ＧＷに位置登録を行い、Ｐ－ＧＷを介して外部ネットワーク上のアプリケーションサーバ１５と通信する。 The terminal 10 is a terminal used for MTC and is an MTC device. The terminal 10 has the communication part 4 and the control part 3 as shown in FIG. Under the control of the control unit 3, the communication unit 4 of the terminal 10 performs location registration with the MME or S-GW via the eNB 11 serving as a radio base station, and the application server 15 on the external network via the P-GW. connect.
　図４は、一般的な通信部の間欠受信（ＤＲＸ：Ｄｉｓｃｏｎｔｉｎｕｏｕｓ　Ｒｅｃｅｐｔｉｏｎ）の動作を示す図である。 FIG. 4 is a diagram illustrating an operation of discontinuous reception (DRX: Discontinuous Reception) of a general communication unit.
　まず、図４に示すように、間欠受信の周期であるＤＲＸ　ｃｙｃｌｅは、下り制御チャネルＰＤＣＣＨ（Ｐｈｙｓｉｃａｌ　Ｄｏｗｎｌｉｎｋ　Ｃｏｎｔｒｏｌ　Ｃｈａｎｎｅｌ）を連続受信しなくてはいけない期間（Ｏｎ－Ｄｕｒａｔｉｏｎ）と、ＰＤＣＣＨを受信しなくてもよい期間（Ｏｐｐｏｒｔｕｎｉｔｙ　ｆｏｒ　ＤＲＸ）とから構成される。なお、前者はＷａｋｅ　ｕｐ期間若しくはアクティブ期間、後者はＳｌｅｅｐ（スリープ）期間とも呼ばれる。また、後者は、ＰＤＣＣＨを受信しない期間、あるいはＰＤＣＣＨを受信してはいけない期間、であってもよい。 First, as shown in FIG. 4, the DRX cycle, which is the intermittent reception cycle, does not receive the PDCCH and the period during which the downlink control channel PDCCH (Physical Downlink Control Channel) must be continuously received (On-Duration). It is composed of a period (Opportunity for DRX). The former is also called a Wake up period or active period, and the latter is also called a Sleep period. The latter may be a period in which no PDCCH is received or a period in which no PDCCH should be received.
　なお、データはＰＤＳＣＨ（Ｐｈｙｓｉｃａｌ　Ｄｏｗｎｌｉｎｋ　Ｓｈａｒｅｄ　Ｃｈａｎｎｅｌ）で送信され、ＰＤＣＣＨにＰＤＳＣＨのスケジューリング情報が含まれている。従って、ＰＤＣＣＨを受信してスケジューリング情報を検出後、それにより指定されたデータを受信することができる。 Note that the data is transmitted by PDSCH (Physical Downlink Shared Channel), and PDSCH scheduling information is included in the PDCCH. Therefore, after receiving the PDCCH and detecting the scheduling information, the designated data can be received.
　また、ＤＲＸ　ｃｙｃｌｅには、ＳｈｏｒｔＤＲＸとＬｏｎｇＤＲＸの２通りがある。ＳｈｏｒｔＤＲＸとＬｏｎｇＤＲＸは、Ｗａｋｅ　ｕｐ期間は同じで、Ｗａｋｅ　ｕｐ期間以外のＰＤＣＣＨを受信しなくてもよい期間の長さが異なり、ＳｈｏｒｔＤＲＸの方がＳｌｅｅｐ期間の間隔が短く設定される。なお、ＬＴＥではＬｏｎｇＤＲＸはＳｈｏｒｔＤＲＸの整数倍という制約がある。Ｗａｋｅ　ｕｐ期間、ＤＲＸ　ｃｙｃｌｅの長さは、例えば、Ｗａｋｅ　ｕｐ期間は、１ｍｓから２００ｍｓまでの間で十数通り設定が可能で、ＤＲＸ　ｃｙｃｌｅは、２ｍｓ（ＳｈｏｒｔＤＲＸ最小）から２５６０ｍｓ（ＬｏｎｇＤＲＸ最大）まで、ＳｈｏｒｔＤＲＸとＬｏｎｇＤＲＸでそれぞれ十数通りの設定が可能である。 Also, there are two types of DRX cycle: ShortDRX and LongDRX. ShortDRX and LongDRX have the same Wake up period, the lengths of periods during which PDCCHs other than the Wake up period need not be received are different, and the interval of the Sleep DRX is set to be shorter. In LTE, there is a restriction that Long DRX is an integral multiple of Short DRX. The length of the Wake up period and DRX cycle can be set, for example, in the Wake up period from 10 ms to 10 ms, and the DRX cycle can be set from 2 ms (short DRX minimum) to 2560 ms (long DRX maximum). Dozens of settings are possible for ShortDRX and LongDRX.
　アプリケーションサーバ１５では、複数のアプリケーションが実行されており、アプリケーション毎に端末１０にデータを送信する周期がそれぞれ設定されている。アプリケーションサーバ１５には、図４に示す通り、収集部１と導出部２とが構成されており、各アプリケーションのデータを送信する送信周期を収集する。尚、収集部１は、収集部１が各アプリケーションを監視して送信周期を解析することにより送信周期を得ても、サーバ管理者に送信周期を入力されることによって得ても良い。 In the application server 15, a plurality of applications are executed, and a cycle for transmitting data to the terminal 10 is set for each application. As shown in FIG. 4, the application server 15 includes a collection unit 1 and a derivation unit 2, and collects transmission cycles for transmitting data of each application. The collection unit 1 may obtain the transmission cycle by monitoring each application and analyzing the transmission cycle, or may be obtained by inputting the transmission cycle to the server administrator.
　本実施の形態では、図５のフローチャートに示されているように、まず収集部１が各アプリケーションの送信周期を収集する（ステップ５０１）。この収集したアプリケーションの送信周期に基づいて、導出部２が通信部４の間欠受信のＷａｋｅ　ｕｐ期間を開始するタイミングを導出する（ステップ５０２）。制御部３は、この導出されたタイミングを受け取り、このタイミングに基づいて通信部のＷａｋｅ　ｕｐ期間の開始を制御する（ステップ５０３）。通信部４は、制御部３の制御のもと、Ｗａｋｅ　ｕｐ期間においてアプリケーションサーバ１５からのデータを受信する（ステップ５０４）。 In the present embodiment, as shown in the flowchart of FIG. 5, the collection unit 1 first collects the transmission period of each application (step 501). Based on the collected application transmission cycle, the deriving unit 2 derives the timing at which the Wake up period for intermittent reception of the communication unit 4 is started (step 502). The control unit 3 receives this derived timing, and controls the start of the wake up period of the communication unit based on this timing (step 503). The communication unit 4 receives data from the application server 15 during the Wake up period under the control of the control unit 3 (step 504).
　ここで、制御部３の制御方法について詳細に説明する。図６は、本実施の形態の端末１０の受信Ｗａｋｅ　ｕｐ期間を制御する動作を説明するための図である。 Here, the control method of the control unit 3 will be described in detail. FIG. 6 is a diagram for explaining an operation of controlling the reception Wake up period of the terminal 10 according to the present embodiment.
　例えば、アプリケーションサーバ１５ではアプリケーション１とアプリケーション２とが実行されていたとする。アプリケーション１は、図６の（１）に示すように、所定期間に４回のＷａｋｅ　ｕｐ期間が設けられるタイミングでデータ送信の要求を送信する。アプリケーション２は、図６の（２）に示すように、所定期間に３回のＷａｋｅ　ｕｐ期間が設けられるタイミングでデータ送信の要求を送信する。収集部１は、このようにアプリケーション毎に異なる送信周期を収集する。そして、導出部２は、収集した複数の送信周期に基づいて、図６（３）に実線で示されている矩形波のように、これらの送信周期で送信されるデータの受信漏れが無いように、受信タイミングを導出する。制御部３は、図６（３）に点線の矩形波のタイミング周期で受信していた通信部４を、導出部２が導出したタイミングでＷａｋｅ　ｕｐ期間が開始されるように通信部４を制御する。 For example, it is assumed that the application 1 and the application 2 are executed in the application server 15. As shown in (1) of FIG. 6, the application 1 transmits a data transmission request at a timing at which four Wake up periods are provided in a predetermined period. As shown in (2) of FIG. 6, the application 2 transmits a data transmission request at a timing at which three wake up periods are provided in a predetermined period. The collection unit 1 collects different transmission cycles for each application in this way. And the derivation | leading-out part 2 seems that there is no reception omission of the data transmitted by these transmission periods like the rectangular wave shown as the continuous line in FIG. 6 (3) based on the collected several transmission periods. Next, the reception timing is derived. The control unit 3 controls the communication unit 4 so that the Wake up period is started at the timing derived by the deriving unit 2 from the communication unit 4 that was received in the timing period of the dotted rectangular wave in FIG. To do.
　尚、上記例では、アプリケーション１とアプリケーション２のＳｌｅｅｐ期間が同一の場合を用いて説明したがこれに限定されるものではなく、Ｓｌｅｅｐ期間がそれぞれ異なっている場合であっても制御できることは明らかである。 In the above example, the case where the sleep periods of the application 1 and the application 2 are the same is described. However, the present invention is not limited to this, and it is obvious that the control can be performed even when the sleep periods are different from each other. is there.
　上述の通り、本発明によると、アプリケーションサーバ１５の送信周期に同期させて通信部４のＷａｋｅ　ｕｐ期間を開始するタイミングを制御するので、常に一定の周期で受信する図６（３）の点線の矩形波で示した受信方法に比べ、ＭＴＣデバイスの消費電力を削減することができる。 As described above, according to the present invention, the timing for starting the Wake up period of the communication unit 4 is controlled in synchronization with the transmission cycle of the application server 15, so that the dotted line in FIG. Compared with the reception method indicated by the rectangular wave, the power consumption of the MTC device can be reduced.
　尚、上記説明では、アプリケーションサーバ１５に収集部１と導出部２とを設ける構成について説明したが、端末１０に構成されても良く、また収集部１と導出部２とを有した制御装置を設ける構成であっても良い。 In the above description, the configuration in which the collection unit 1 and the derivation unit 2 are provided in the application server 15 has been described. However, the control unit having the collection unit 1 and the derivation unit 2 may be configured in the terminal 10. The structure provided may be sufficient.
　また、上記説明では、収集部１がアプリケーションデバイス１５の各アプリケーションがデータを送信する周期を収集する場合について説明した。しかしながら、収集部１が集める情報は周期そのものではなく、送信時刻を収集してこれを解析して導出部２が周期を導出しても良い。 In the above description, the case where the collection unit 1 collects the period in which each application of the application device 15 transmits data has been described. However, the information collected by the collection unit 1 is not the cycle itself, but the transmission time may be collected and analyzed to derive the cycle.
〈実施の形態２〉
　上記実施の形態では、受信周期のＷａｋｅ　ｕｐ期間のそれぞれが同一の所定の期間である場合を用いて説明した。本実施の形態では、このＷａｋｅ　ｕｐ期間が一定で無い場合について説明する。尚、上記実施の形態と同様の構成については同一番号を付し、詳細な説明を省略する。 <Embodiment 2>
In the above embodiment, the case where each of the Wake up periods of the reception cycle is the same predetermined period has been described. In the present embodiment, the case where the Wake up period is not constant will be described. In addition, the same number is attached | subjected about the structure similar to the said embodiment, and detailed description is abbreviate | omitted.
　アプリケーションサーバ１５の送信部は、端末１０に送信するデータの終了を示す送信終了情報を送信するが、この送信終了情報の送信方法としては、（１）端末１０に送信する最後の送信データに送信終了を示す送信終了情報を含めて送信する方法、
（２）端末１０に送信する送信データとは別に、送信データの完了を示すメッセージとして送信終了情報を送信する方法
があるが、本発明では、いずれの方法であっても良い。 The transmission unit of the application server 15 transmits transmission end information indicating the end of data to be transmitted to the terminal 10. The transmission end information is transmitted by (1) transmitting to the last transmission data to be transmitted to the terminal 10. A method of transmitting including transmission end information indicating the end,
(2) There is a method of transmitting transmission end information as a message indicating the completion of transmission data separately from the transmission data transmitted to the terminal 10, but any method may be used in the present invention.
　また、端末１０に送信する送信データが終了であるかのアプリケーションサーバ１５による判断は、例えば、
（１）アプリケーションサーバ１５の送信部が送信バッファに、端末１０に送信する送信データがなくなった時点で送信データが終了であると判断する方法、
（２）端末１０に送信する送信データの送信が完了した時点で、送信データ完了信号（送信終了情報）をｅＮＢ１１に送信し、ｅＮＢ１１が送信終了情報を端末１０に転送する方法
がある。 The determination by the application server 15 as to whether the transmission data to be transmitted to the terminal 10 is complete, for example,
(1) A method in which the transmission unit of the application server 15 determines that the transmission data is complete when there is no transmission data to be transmitted to the terminal 10 in the transmission buffer;
(2) There is a method of transmitting a transmission data completion signal (transmission end information) to the eNB 11 when the transmission of transmission data to be transmitted to the terminal 10 is completed, and the eNB 11 transfers the transmission end information to the terminal 10.
　端末１０の制御部３は、間欠受信における受信期間（Ｗａｋｅ　ｕｐ期間）中に送信終了情報を受信した場合は、その受信期間に残余期間がある場合でも、間欠受信のデータ受信をやめ、非受信期間、すなわちＳｌｅｅｐ期間に移行させて通信処理を制御する。 If the control unit 3 of the terminal 10 receives the transmission end information during the reception period (Wake up period) in the intermittent reception, even if there is a remaining period in the reception period, the control unit 3 stops the data reception of the intermittent reception and does not receive it. The communication process is controlled by shifting to the period, that is, the sleep period.
　制御部３は、図７に示す通り、上記実施の形態で説明した処理を経て、データを受信する（ステップ５０１～５０４）。 As shown in FIG. 7, the control unit 3 receives data through the processing described in the above embodiment (steps 501 to 504).
　制御部３は、送信終了情報を受信したかを監視し、受信した場合、間欠受信のデータ受信をやめ、Ｓｌｅｅｐ期間に移行させる（ステップ７０１）。 The control unit 3 monitors whether or not the transmission end information has been received, and if received, stops the intermittent reception of data and shifts to the sleep period (step 701).
　上述の通り、本発明によると、ＭＴＣデバイスの受信電力の消費を削減することができる。 As described above, according to the present invention, reception power consumption of the MTC device can be reduced.
〈実施の形態３〉
　上記実施の形態では、端末１０が受信する受信周期のＷａｋｅ　ｕｐ期間を制御する形態について説明した。本実施の形態では、端末１０がデータを送信する際のＷａｋｅ　ｕｐ期間を、受信周期のＷａｋｅ　ｕｐ期間に同期させる実施形態について説明する。尚、上記実施の形態と同様の構成については同一番号を付し、詳細な説明を省略する。図８は本実施の形態の動作のフロー図であり、図９は本実施の形態の端末１０の送信Ｗａｋｅ　ｕｐ期間を制御する動作を説明するための図である。 <Embodiment 3>
In the above-described embodiment, the mode of controlling the Wake up period of the reception cycle received by the terminal 10 has been described. In the present embodiment, an embodiment will be described in which the Wake up period when the terminal 10 transmits data is synchronized with the Wake up period of the reception cycle. In addition, the same number is attached | subjected about the structure similar to the said embodiment, and detailed description is abbreviate | omitted. FIG. 8 is a flowchart of the operation of the present embodiment, and FIG. 9 is a diagram for explaining the operation of controlling the transmission wake up period of the terminal 10 of the present embodiment.
　制御部３は、実施の形態１にて説明した処理を経て受信周期のＷａｋｅ　ｕｐ期間を設定して制御し、アプリケーションサーバ１５からデータの送信要求を受信する（ステップ５０１～５０３）。 The control unit 3 sets and controls the Wake up period of the reception cycle through the processing described in the first embodiment, and receives a data transmission request from the application server 15 (steps 501 to 503).
　更に、制御部３は、受信周期のＷａｋｅ　Ｕｐ期間と同期するように、送信周期のＷａｋｅ　ｕｐ期間を設定して制御する（ステップ８０１）。 Furthermore, the control unit 3 sets and controls the Wake up period of the transmission cycle so as to synchronize with the Wake Up period of the reception cycle (step 801).
　通信部４が、制御部３が制御したＷａｋｅ　ｕｐ期間のタイミングでアプリケーションサーバ１５にデータを送信する（ステップ８０２）。 The communication unit 4 transmits data to the application server 15 at the timing of the Wake up period controlled by the control unit 3 (step 802).
　上述の本発明によると、端末１０の送受信のＷａｋｅ　ｕｐ期間が同じになり、端末１０の通信機能の電源オン時間も同じになるため、ＭＴＣデバイスに過剰に電力を消費させることが無い。 According to the above-described present invention, since the Wake up period for transmission / reception of the terminal 10 is the same and the power-on time of the communication function of the terminal 10 is also the same, the MTC device does not consume excessive power.
　尚、本実施の形態の送信のＷａｋｅ　ｕｐ期間を、上述の実施の形態２同様に、送信データが無くなった時点でＳｌｅｅｐ期間に移行させても良い。 It should be noted that the transmission Wake up period of the present embodiment may be shifted to the Sleep period when there is no transmission data, as in the second embodiment.
　この場合、制御部３は、送信バッファに送信データがあるか否かを監視し、送信データがなくなった時点で送信データが終了であると判断して、Ｓｌｅｅｐ期間に移行させるものとする。 In this case, the control unit 3 monitors whether or not there is transmission data in the transmission buffer, determines that the transmission data is complete when there is no transmission data, and shifts to the sleep period.
　また、送信周期と受信周期とが同期するため、Ｓｌｅｅｐ期間は端末の通信部自体の電源をオフにしても良い。 Also, since the transmission cycle and the reception cycle are synchronized, the power of the communication unit itself of the terminal may be turned off during the sleep period.
　これにより、ＭＴＣデバイスに過剰に電力を消費させることが無い。 This prevents the MTC device from consuming excessive power.
　尚、上述した本願発明は、上記説明からも明らかなようにハードウェアで構成することも可能であるが、コンピュータプログラムによって各処理を情報処理装置（ＣＰＵ）に行わせることにより実現することも可能である。この場合、プログラムメモリに格納されているプログラムで動作するプロセッサによって、上述した実施の形態と同様の機能、動作を実現させる。 The present invention described above can be configured by hardware as apparent from the above description, but can also be realized by causing an information processing apparatus (CPU) to perform each process by a computer program. It is. In this case, functions and operations similar to those of the above-described embodiment are realized by a processor that operates according to a program stored in the program memory.
　例えば、無線端末１では、図１０に示す如く、メモリ１００と、ＣＰＵ１０１とから構成されるコンピュータシステムによって実現可能である。この場合、メモリ１００には、上述した制御部３及び通信部４に対応する処理を行うプログラムが格納されている。そして、ＣＰＵ１０１がメモリ１００に格納されているプログラムを実行することで、制御部３及び通信部４の機能が実現される。 For example, the wireless terminal 1 can be realized by a computer system including a memory 100 and a CPU 101 as shown in FIG. In this case, the memory 100 stores a program for performing processing corresponding to the control unit 3 and the communication unit 4 described above. Then, the functions of the control unit 3 and the communication unit 4 are realized by the CPU 101 executing the program stored in the memory 100.
　また、収集部１及び導出部２を有するアプリケーションサーバ１５も同様に、図１１に示す如く、メモリ２００と、ＣＰＵ２０１とから構成されるコンピュータシステムによって実現可能である。この場合、メモリ２００には、上述した収集部１及び導出部２に対応する処理を行うプログラムが格納されている。そして、ＣＰＵ２０１がメモリ２００に格納されているプログラムを実行することで、収集部１及び導出部２の機能が実現される。 Similarly, the application server 15 having the collection unit 1 and the derivation unit 2 can be realized by a computer system including a memory 200 and a CPU 201 as shown in FIG. In this case, the memory 200 stores a program for performing processing corresponding to the collection unit 1 and the derivation unit 2 described above. The functions of the collection unit 1 and the derivation unit 2 are realized by the CPU 201 executing the program stored in the memory 200.
　また、上記の実施形態の一部又は全部は、以下の付記のようにも記載されうるが、以下には限られない。 Further, a part or all of the above embodiment can be described as in the following supplementary notes, but is not limited thereto.
　以上、実施の形態及び実施例をあげて本願発明を説明したが、本願発明は必ずしも上記実施の形態及び実施例に限定されるものではなく、その技術的思想の範囲内において様々に変形し実施することが出来る。 The present invention has been described above with reference to the embodiments and examples. However, the present invention is not necessarily limited to the above embodiments and examples, and various modifications can be made within the scope of the technical idea. I can do it.
　［付記１］
　通信システムであって、
　外部ネットワーク側から端末にデータが送信される複数の送信周期を収集する収集手段と、
　前記端末の通信手段が前記データを、前記収集した周期で受信する受信タイミングを導出する導出手段と、
　前記導出した受信タイミングで、前記通信手段を、前記データを受信するアクティブ期間が開始されるように制御する制御手段と
を有する通信システム。 [Appendix 1]
A communication system,
A collecting means for collecting a plurality of transmission cycles in which data is transmitted from the external network side to the terminal;
Derivation means for deriving a reception timing at which the communication means of the terminal receives the data at the collected period;
A communication system comprising: control means for controlling the communication means so that an active period for receiving the data is started at the derived reception timing.
　［付記２］
　前記導出手段は、前記収集した周期で受信する最小の受信タイミングを導出する
付記１に記載の通信システム。 [Appendix 2]
The communication system according to appendix 1, wherein the deriving unit derives a minimum reception timing to be received at the collected period.
　［付記３］
　前記制御手段は、前記外部ネットワーク側からのデータの送信終了を検出すると、前記通信手段を非アクティブ期間に遷移させる
付記１または付記２に記載の通信システム。 [Appendix 3]
The communication system according to Supplementary Note 1 or Supplementary Note 2, wherein when the control unit detects the end of transmission of data from the external network side, the control unit transitions the communication unit to an inactive period.
　［付記４］
　前記制御手段は、前記導出した受信タイミングで、前記通信手段がデータを送信するアクティブ期間が開始されるように制御する
付記１から付記３のいずれかに記載の通信システム。 [Appendix 4]
The communication system according to any one of appendix 1 to appendix 3, wherein the control unit performs control so that an active period in which the communication unit transmits data is started at the derived reception timing.
　［付記５］
　前記制御手段は、前記データの送信が完了すると、前記通信手段を非アクティブ期間に遷移させる
付記４に記載の通信システム。 [Appendix 5]
The communication system according to supplementary note 4, wherein when the transmission of the data is completed, the control unit causes the communication unit to transition to an inactive period.
　［付記６］
　前記収集手段は、前記外部ネットワーク側からのデータが送信される時刻を収集し、
　前記導出手段は、前記収集した時刻に、前記アクティブ期間が開始されるように制御する
付記１から付記５のいずれかに記載の通信システム。 [Appendix 6]
The collecting means collects the time when data from the external network side is transmitted,
The communication system according to any one of appendix 1 to appendix 5, wherein the derivation unit controls the active period to start at the collected time.
　［付記７］
　通信端末であって、
　データの送受信を行う通信手段と、
　外部ネットワーク側から自端末にデータが送信される複数の送信周期で受信するように導出された受信タイミングで、前記通信手段を、前記データを受信するアクティブ期間が開始されるように制御する制御手段と
を有する通信端末。 [Appendix 7]
A communication terminal,
A communication means for transmitting and receiving data;
Control means for controlling the communication means so that an active period for receiving the data is started at a reception timing derived so as to be received at a plurality of transmission cycles in which data is transmitted from the external network side to the terminal. A communication terminal.
　［付記８］
　通信制御装置であって、
　外部ネットワーク側から端末にデータが送信される複数の送信周期を収集する収集手段と、
　前記端末の通信手段が前記データを、前記収集した周期で受信する受信タイミングを導出する導出手段と、
を有する通信制御装置。 [Appendix 8]
A communication control device,
A collecting means for collecting a plurality of transmission cycles in which data is transmitted from the external network side to the terminal;
Derivation means for deriving a reception timing at which the communication means of the terminal receives the data at the collected period;
A communication control device.
　［付記９］
　通信方法であって、
　外部ネットワーク側から端末にデータが送信される複数の送信周期を収集する収集ステップと、
　前記端末の通信部が前記データを、前記収集した周期で受信する受信タイミングを導出する導出ステップと、
　前記導出した受信タイミングで、前記通信部を、前記データを受信するアクティブ期間が開始されるように制御する制御ステップと
を有する通信方法。 [Appendix 9]
A communication method,
A collection step of collecting a plurality of transmission cycles in which data is transmitted from the external network side to the terminal;
A derivation step of deriving a reception timing at which the communication unit of the terminal receives the data at the collected period;
And a control step of controlling the communication unit so that an active period for receiving the data is started at the derived reception timing.
　［付記１０］
　通信端末であって、
　メモリとプロセッサとから構成され、
　前記プロセッサは、
　データの送受信を行う通信処理と、
　外部ネットワーク側から自端末にデータが送信される複数の送信周期で受信するように導出された受信タイミングで、前記通信手段を、前記データを受信するアクティブ期間が開始されるように制御する制御処理と
を実行する通信端末。 [Appendix 10]
A communication terminal,
Consisting of memory and processor,
The processor is
Communication processing to send and receive data;
Control processing for controlling the communication means so that an active period for receiving the data is started at a reception timing derived so as to be received at a plurality of transmission cycles in which data is transmitted from the external network side to the terminal. A communication terminal that executes
　通信制御装置であって、
　メモリとプロセッサとから構成され、
　前記プロセッサは、
　外部ネットワーク側から端末にデータが送信される複数の送信周期を収集する収集処理と、
　前記端末の通信手段が前記データを、前記収集した周期で受信する受信タイミングを導出する導出処理と、
を実行する通信制御装置。 A communication control device,
Consisting of memory and processor,
The processor is
A collection process for collecting multiple transmission cycles in which data is transmitted from the external network side to the terminal;
A derivation process for deriving a reception timing at which the communication means of the terminal receives the data at the collected period;
Communication control device for executing.
　本出願は、２０１５年３月２３日に出願された日本出願特願２０１５－０５９３４１号を基礎とする優先権を主張し、その開示の全てをここに取り込む。 This application claims priority based on Japanese Patent Application No. 2015-059341 filed on Mar. 23, 2015, the entire disclosure of which is incorporated herein.
　１　　収集部
　２　　導出部
　３　　制御部
　４　　通信部
　１０　　端末
　１１　　ｅＮＢ
　１２　　ＭＭＥ
　１３　　Ｓ－ＧＷ
　１４　　Ｐ－ＧＷ
　１５　　アプリケーションサーバ
　１００　メモリ
　１０１　ＣＰＵ
　２００　メモリ
　２０１　ＣＰＵ DESCRIPTION OF SYMBOLS 1 Collection part 2 Derivation part 3 Control part 4 Communication part 10 Terminal 11 eNB
12 MME
13 S-GW
14 P-GW
15 Application server 100 Memory 101 CPU
200 memory 201 CPU

Claims (11)

  1. 　通信システムであって、
    　外部ネットワーク側から端末にデータが送信される複数の送信周期を収集する収集手段と、
    　前記端末の通信手段が前記データを、前記収集した周期で受信する受信タイミングを導出する導出手段と、
    　前記導出した受信タイミングで、前記通信手段を、前記データを受信するアクティブ期間が開始されるように制御する制御手段と
    を有する通信システム。     A communication system,
    A collecting means for collecting a plurality of transmission cycles in which data is transmitted from the external network side to the terminal;
    Derivation means for deriving a reception timing at which the communication means of the terminal receives the data at the collected period;
    A communication system comprising: control means for controlling the communication means so that an active period for receiving the data is started at the derived reception timing.
  2. 　前記導出手段は、前記収集した周期で受信する最小の受信タイミングを導出する
    請求項１に記載の通信システム。     The communication system according to claim 1, wherein the deriving unit derives a minimum reception timing received at the collected period.
  3. 　前記制御手段は、前記外部ネットワーク側からのデータの送信終了を検出すると、前記通信手段を非アクティブ期間に遷移させる
    請求項１または請求項２に記載の通信システム。     3. The communication system according to claim 1, wherein when the control unit detects the end of transmission of data from the external network side, the control unit shifts the communication unit to an inactive period.
  4. 　前記制御手段は、前記導出した受信タイミングで、前記通信手段がデータを送信するアクティブ期間が開始されるように制御する
    請求項１から請求項３のいずれかに記載の通信システム。     The communication system according to any one of claims 1 to 3, wherein the control unit performs control so that an active period in which the communication unit transmits data is started at the derived reception timing.
  5. 　前記制御手段は、前記データの送信が完了すると、前記通信手段を非アクティブ期間に遷移させる
    請求項４に記載の通信システム。     The communication system according to claim 4, wherein the control unit shifts the communication unit to an inactive period when the transmission of the data is completed.
  6. 　前記収集手段は、前記外部ネットワーク側からのデータが送信される時刻を収集し、
    　前記導出手段は、前記収集した時刻に、前記アクティブ期間が開始されるように制御する
    請求項１から請求項５のいずれかに記載の通信システム。     The collecting means collects the time when data from the external network side is transmitted,
    The communication system according to any one of claims 1 to 5, wherein the derivation unit controls the active period to start at the collected time.
  7. 　通信端末であって、
    　データの送受信を行う通信手段と、
    　外部ネットワーク側から自端末にデータが送信される複数の送信周期で受信するように導出された受信タイミングで、前記通信手段を、前記データを受信するアクティブ期間が開始されるように制御する制御手段と
    を有する通信端末。     A communication terminal,
    A communication means for transmitting and receiving data;
    Control means for controlling the communication means so that an active period for receiving the data is started at a reception timing derived so as to be received at a plurality of transmission cycles in which data is transmitted from the external network side to the terminal. A communication terminal.
  8. 　通信制御装置であって、
    　外部ネットワーク側から端末にデータが送信される複数の送信周期を収集する収集手段と、
    　前記端末の通信手段が前記データを、前記収集した周期で受信する受信タイミングを導出する導出手段と、
    を有する通信制御装置。     A communication control device,
    A collecting means for collecting a plurality of transmission cycles in which data is transmitted from the external network side to the terminal;
    Derivation means for deriving a reception timing at which the communication means of the terminal receives the data at the collected period;
    A communication control device.
  9. 　通信方法であって、
    　外部ネットワーク側から端末にデータが送信される複数の送信周期を収集する収集ステップと、
    　前記端末の通信部が前記データを、前記収集した周期で受信する受信タイミングを導出する導出ステップと、
    　前記導出した受信タイミングで、前記通信部を、前記データを受信するアクティブ期間が開始されるように制御する制御ステップと
    を有する通信方法。     A communication method,
    A collection step of collecting a plurality of transmission cycles in which data is transmitted from the external network side to the terminal;
    A derivation step of deriving a reception timing at which the communication unit of the terminal receives the data at the collected period;
    And a control step of controlling the communication unit so that an active period for receiving the data is started at the derived reception timing.
  10. 　通信端末のプログラムであって、前記プログラムは前記通信端末を、
    　データの送受信を行う通信手段と、
    　外部ネットワーク側から自端末にデータが送信される複数の送信周期で受信するように導出された受信タイミングで、前記通信手段を、前記データを受信するアクティブ期間が開始されるように制御する制御手段と
    して機能させるプログラム。     A program for a communication terminal, wherein the program
    A communication means for transmitting and receiving data;
    Control means for controlling the communication means so that an active period for receiving the data is started at a reception timing derived so as to be received at a plurality of transmission cycles in which data is transmitted from the external network side to the terminal. Program to function as.
  11. 　通信制御装置のプログラムであって、前記プログラムは前記通信制御装置を、
    　外部ネットワーク側から端末にデータが送信される複数の送信周期を収集する収集手段と、
    　前記端末の通信手段が前記データを、前記収集した周期で受信する受信タイミングを導出する導出手段と、
    して機能させるプログラム。     A communication control device program, wherein the program controls the communication control device,
    A collecting means for collecting a plurality of transmission cycles in which data is transmitted from the external network side to the terminal;
    Derivation means for deriving a reception timing at which the communication means of the terminal receives the data at the collected period;
    Program to function as.
PCT/JP2016/058789 2015-03-23 2016-03-18 Communication system, communication terminal, communication method, and program WO2016152803A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013176063A (en) * 2006-10-30 2013-09-05 Lg Electronics Inc Method for transitioning between multiple reception levels
WO2014083723A1 (en) * 2012-11-27 2014-06-05 Nec Corporation Discontinuous reception in a mobile radio communication device
WO2014099446A1 (en) * 2012-12-17 2014-06-26 Qualcomm Incorporated Devices and methods for facilitating dynamic power reduction during discontinuous reception

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013176063A (en) * 2006-10-30 2013-09-05 Lg Electronics Inc Method for transitioning between multiple reception levels
WO2014083723A1 (en) * 2012-11-27 2014-06-05 Nec Corporation Discontinuous reception in a mobile radio communication device
WO2014099446A1 (en) * 2012-12-17 2014-06-26 Qualcomm Incorporated Devices and methods for facilitating dynamic power reduction during discontinuous reception

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