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WO2018062834A1 - Système de communication sans fil utilisant un intervalle de temps d'accusé de réception - Google Patents

Système de communication sans fil utilisant un intervalle de temps d'accusé de réception Download PDF

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Publication number
WO2018062834A1
WO2018062834A1 PCT/KR2017/010691 KR2017010691W WO2018062834A1 WO 2018062834 A1 WO2018062834 A1 WO 2018062834A1 KR 2017010691 W KR2017010691 W KR 2017010691W WO 2018062834 A1 WO2018062834 A1 WO 2018062834A1
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WO
WIPO (PCT)
Prior art keywords
acknowledgment
signal
wireless communication
master device
time slot
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.)
Ceased
Application number
PCT/KR2017/010691
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English (en)
Korean (ko)
Inventor
이인석
박검재
신명재
이병훈
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.)
Techand Inc
Original Assignee
Techand Inc
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Filing date
Publication date
Application filed by Techand Inc filed Critical Techand Inc
Publication of WO2018062834A1 publication Critical patent/WO2018062834A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
    • H04W84/20—Leader-follower arrangements

Definitions

  • the present invention relates to a wireless communication system using an acknowledgment time slot, and more particularly, to a technique for transmitting an acknowledgment by transmitting only an unmodulated acknowledgment signal without a message.
  • IoT Internet of Things
  • a device wireless network system generally communicates with a master device, which is a server or management device that manages devices on an individual or group basis, and with each slave device that is an individual device.
  • One master device broadcasts a transmission message, and a plurality of slave devices use a method of sending an acknowledgment message in response to the transmission message.
  • A. Dutta1 et al. (Aveek Dutta1, Dola Saha, Dirk Grunwald, Douglas Sicker, "SMACK-A SMart ACKnowledgment Scheme for Broadcast Messages in Wireless Networks," SIGCOMM'09 Barcelona, Spain, pp. 15-26, August 17-21, 2009.) discloses a technology in which a subcarrier frequency is allocated to each receiving apparatus in the frequency domain so that each receiving apparatus transmits the corresponding subcarrier frequency signal to the transmitting apparatus, and analyzes each signal in the transmitting apparatus to confirm reception.
  • a subcarrier frequency is allocated to each receiving apparatus in the frequency domain so that each receiving apparatus transmits the corresponding subcarrier frequency signal to the transmitting apparatus, and analyzes each signal in the transmitting apparatus to confirm reception.
  • the present invention is a master device that is assigned an acknowledgment time slot repeated at a set interval for each slave device and has no message in the acknowledgment time slot assigned to the slave device itself.
  • the present invention provides a wireless communication system that transmits an acknowledgment to an acknowledgment.
  • the present invention provides a wireless communication system that responds to an acknowledgment by transmitting an on-off modulated signal of a set pattern in place of an unmodulated acknowledgment carrier signal to a master device.
  • an acknowledgment is repeated at a set interval for each slave device.
  • the master device may include an allocator for allocating an acknowledgment time slot when registering the slave device and a wireless communication unit for broadcasting the transmission message.
  • the slave device may include a signal generator for generating the unmodulated acknowledgment carrier signal and a wireless communication unit for transmitting the unmodulated acknowledgment carrier signal to a master device in an acknowledgment time slot assigned to the slave device.
  • the signal generator may generate an on-off keying (OOK) signal of a set pattern in place of the unmodulated confirmation carrier signal.
  • OOK on-off keying
  • the signal generator may generate an on-off modulated signal including an acknowledgment response pattern signal indicating the acknowledgment and a slave device operation pattern signal indicating the operation of the slave device.
  • the signal generator may generate an on-off modulated signal regardless of whether the transmission message is received.
  • an acknowledgment time slot is assigned to each slave device to be repeated at set intervals, and only an unmodulated acknowledgment carrier signal without a message is received from the acknowledgment time slot assigned to the slave device to respond to the acknowledgment.
  • the synchronization process for transmitting and receiving the response message is reduced, so that the acknowledgment report of a large number of slave devices can be quickly received in the narrow-band low-speed data communication scheme.
  • the present invention can be easily distinguished from an external interference signal such as noise of a wireless channel by transmitting an on-off modulated signal having a set pattern in place of an unmodulated confirmation carrier signal.
  • the present invention transmits a signal of an acknowledgment response pattern indicating an acknowledgment and a slave device operation pattern indicating an operation of a slave device in an on-off modulated signal to transmit a message about a slave device operation pattern other than the acknowledgment to the master device.
  • FIG. 1 is a block diagram illustrating a wireless communication system using an acknowledgment time slot of the present invention.
  • FIG. 2 is a block diagram illustrating the master device of FIG. 1.
  • FIG. 3 is a block diagram illustrating a slave device of FIG. 1.
  • FIG. 4 shows an example of a message frame of the present invention.
  • FIG 5 shows an example of receiving an unmodulated acknowledgment carrier signal in an allocated acknowledgment timeslot.
  • FIG 6 shows an example of receiving an on-off modulated signal in an assigned acknowledgment timeslot.
  • FIG. 7 shows an example of an on-off modulated signal composed of a plurality of patterns.
  • FIG. 1 is a block diagram illustrating a wireless communication network system using an acknowledgment time slot of the present invention, wherein a wireless communication network system includes one master device 100 and a plurality of slave devices 200 participating in the wireless communication 10. ).
  • the master device 100 operates as a master to monitor the plurality of slave devices 200 and to control or manage each slave device 200.
  • the master device 100 may manage and control the slave device 200 by receiving a detection signal of a sensor included in the slave device 200.
  • the plurality of slave devices 200 may be various sensor devices installed at various places such as smart homes, parking facilities, and lighting facilities. Also, the plurality of slave devices 200 may be formed in individual or group units according to functions or locations, and the wireless sensor network 50 may be formed in individual or group units.
  • the master device 100 broadcasts a transmission message to control or monitor the plurality of slave devices 200, and the plurality of slave devices 200 transmit an acknowledgment message in response to the transmission message.
  • FIG. 2 is a block diagram illustrating the master device of FIG. 1, wherein the master device 100 includes a register 110, an allocator 120, a generator 130, a communicator 140, and a master controller 150. do.
  • the registration unit 110 registers identification information of the slave device on a group basis.
  • the identification information includes an ID and a serial number for identifying the slave device, and includes batch information in which the slave device 200 is disposed.
  • the allocator 120 receives a quick report from the plurality of slave devices 200 at the same time, receives an acknowledgment for the transmission message, and prevents an acknowledgment collision between the plurality of slave devices 200.
  • Time slots are allocated at set intervals every 200). This timeslot is repeated periodically.
  • the generation unit 130 generates a beacon signal to match time synchronization between the plurality of slave devices 200 or allow the plurality of slave devices 200 to acquire signals.
  • the generation unit 130 generates a request for an operation state of the plurality of slave devices 200 or a transmission message for controlling the plurality of slave devices 200. For example, in the sensor network system, the generation unit 130 generates a transmission message related to a request for detection signals of the plurality of slave devices 200.
  • the communication unit 140 broadcasts a transmission message and transmits an on-off keying signal (OOK) of a predetermined pattern to replace the unmodulated acknowledgment carrier signal or the unmodulated acknowledgment carrier signal from the plurality of slave devices 200. Receive. Description of the on-off modulated signal will be described in the slave device 200.
  • OSK on-off keying signal
  • the master controller 150 controls operations of the registerer 110, the assigner 120, the generator 130, and the communicator 140.
  • FIG. 3 is a block diagram illustrating the slave device of FIG. 1.
  • the slave device 200 When the slave device 200 receives a transmission message from the master device, the slave device 200 transmits an unmodulated acknowledgment signal to the master device 100 in an acknowledgment timeslot assigned thereto. Send and respond with an acknowledgment.
  • a transmission message frame includes a plurality of timeslots, and the timeslot is repeated at a set interval.
  • the message frame includes a beacon timeslot 310 for time synchronization or signal acquisition, and is a section for preparing to broadcast in the beacon timeslot 310 or determining transmission and reception of a message.
  • the message frame includes a message timeslot 330 in which the actual message is transmitted, and there is an acknowledgment timeslot 320 assigned to each slave device 200 and repeated at a set interval.
  • the acknowledgment timeslot 320 is disposed between the beacon timeslot 310 and the message timeslot 330 in the iteration section 300.
  • the slave device 200 includes a signal generator 220, a wireless communication unit 230, and a slave controller 240.
  • the signal generator 220 generates an unmodulated acknowledgment carrier signal in a non-modulated state without a message or generates an OOK signal.
  • FIG. 5 illustrates an example of receiving an unmodulated acknowledgment carrier signal in an allocated acknowledgment timeslot.
  • the signal generator 220 receives a transmission message from the master device 100, the signal generator 220 generates an unmodulated acknowledgment carrier signal.
  • the wireless communication unit 230 transmits the unmodulated acknowledgment carrier signal to the master device 100 in the acknowledgment timeslot 320 assigned thereto.
  • the master device 100 may acknowledge the plurality of slave devices 200 according to the presence or absence of an unmodulated confirmation carrier signal.
  • the acknowledgment is performed according to the presence or absence of an unmodulated acknowledgment carrier signal, thereby reducing the synchronization and message capacity burden for transmitting and receiving a response message and reporting the acknowledgment of the plurality of slave devices 200 in a narrow bandwidth low speed data communication scheme. You can get quickly.
  • the acknowledgment timeslot 320 is composed of ten timeslots, and each timeslot is used as an interval for transmitting an unmodulated acknowledgment carrier signal from each slave device 200. Since the unmodulated acknowledgment carrier exists in the first, third, fourth, and sixth time slots in the acknowledgment timeslot 320, the master device 100 has acknowledged the acknowledgment of the first, third, fourth, and sixth slave devices. Able to know.
  • the acknowledgment timeslot 320 may be configured with various numbers of timeslots according to the wireless communication system design, so that the plurality of slave devices 200 may be managed and operated.
  • the plurality of slave devices 200 may be provided with a wireless channel, which is a wireless communication 10, between the master device 100, and the wireless channel may include external interference signals such as noise. Depending on the condition, it may be difficult to distinguish from external interference signals.
  • the slave device 200 further includes a signal selector 210, and the signal selector 210 selects one of an unmodulated acknowledgment carrier signal or an on-off modulated signal in consideration of a state of a wireless channel.
  • the signal generator 220 generates an on-off modulated signal having a set pattern when the signal selector 210 selects generation of an on-off modulated signal.
  • FIG. 6 illustrates an example of receiving an on-off modulated signal in an allocated acknowledgment timeslot.
  • the signal generator 220 performs unmodulated confirmation in the acknowledgment timeslot 320 assigned thereto.
  • an acknowledgment signal easily distinguished from an external interference signal such as noise of a wireless channel can be transmitted.
  • the signal generator 220 may display a promised acknowledgment response pattern signal indicating an acknowledgment and an operating state of the slave device 200. Generate an on-off modulated signal comprising the slave device operation pattern signal. The operating state is classified according to the detection signal in the sensor network.
  • an acknowledgment may be indicated even if there is no pattern according to the presence or absence of an unmodulated acknowledgment carrier signal, and as shown in FIG. ) Can be classified into a slave device operation pattern signal indicating an operation state.
  • the slave device operation pattern signal is a signal for transferring information of a relatively simple slave device to the master device 100.
  • the on-off modulated signal of FIG. 7A is formed with an acknowledgment response pattern indicating acknowledgment
  • the on-off modulated signal of FIG. 7B is a positive operation pattern signal indicating affirmation for the operation of the slave device 200. Is formed, and the on-off modulated signal of FIG. 7C is inversely formed.
  • the slave device operation pattern signal is positive and negative, such as whether the slave device 200 generates an alarm, whether a message is sent in advance, whether a simple operation is executed, or whether there is a content to be reported in addition to acknowledgment. It is represented by the promised operation pattern of.
  • the pattern of the on-off modulated signal is composed of various numbers of patterns according to the wireless communication system design, but is not limited thereto.
  • the signal selector 210 analyzes an operation of the transmission message or the slave device 200 and selects one of an acknowledgment response pattern signal and a slave device operation pattern signal from the on-off modulated signal, and the signal generator 220 A signal corresponding to the selection of the signal selector 210 is generated.
  • the signal generator 220 may generate an on-off modulated signal regardless of whether a transmission message is received. For example, the signal generator 220 voluntarily generates a slave device operation pattern signal regardless of whether a signal is selected by the signal selector 210, and the wireless communicator 230 receives a signal assigned to the receiver.
  • the acknowledgment timeslot 320 transmits a slave device operation pattern signal to the master device 100.
  • the slave device operation pattern signal is a signal for transmitting relatively simple information to the master device 100 in relation to the operation of the slave device 200 as described above.
  • the slave controller 240 controls operations of the signal selector 210, the signal generator 220, and the wireless communication unit 230.
  • the present invention can be applied to narrowband low-speed data communication, and can be used as a wireless communication system that can receive a quick report on the acknowledgment of a large number of receiving apparatuses.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un système de communication sans fil utilisant un intervalle de temps d'accusé de réception, comprenant : un dispositif maître, lequel attribue un intervalle de temps d'accusé de réception répété à des intervalles prédéfinis auprès de chacun des dispositifs esclaves et lequel diffuse un message de transmission ; et la pluralité de dispositifs esclaves, lesquels, après la réception du message de transmission, accusent la réception dudit message en transmettant un signal de porteuse d'accusé de réception non modulé au dispositif maître, à partir d'un intervalle de temps d'accusé de réception, lequel a été attribué à chacun des dispositifs esclaves.
PCT/KR2017/010691 2016-09-30 2017-09-27 Système de communication sans fil utilisant un intervalle de temps d'accusé de réception Ceased WO2018062834A1 (fr)

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KR1020160126236A KR101897536B1 (ko) 2016-09-30 2016-09-30 수신확인 타임슬롯을 이용한 무선통신 시스템
KR10-2016-0126236 2016-09-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115988627A (zh) * 2022-12-22 2023-04-18 陕西天基通信科技有限责任公司 一种主从机时间同步的方法及装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130308572A1 (en) * 2012-05-21 2013-11-21 Samsung Electronics Co., Ltd Transmission mode and feedback designs to support mtc type devices in lte
WO2015069093A1 (fr) * 2013-11-11 2015-05-14 엘지전자(주) Procédé et appareil de connexion bluetooth
WO2015102467A1 (fr) * 2014-01-06 2015-07-09 삼성전자 주식회사 Appareil de commande de dispositif domestique et procédé de commande utilisant un dispositif pouvant être porté
WO2016003064A1 (fr) * 2014-07-03 2016-01-07 엘지전자(주) Procédé d'émission et de réception de données audio dans un système de communication sans fil prenant en charge une communication bluetooth et dispositif associé
WO2016013802A1 (fr) * 2014-07-23 2016-01-28 (주)이미지스테크놀로지 Procédé pour mettre par paires de multiples dispositifs électroniques et procédé pour commander des dispositifs électroniques l'utilisant

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130308572A1 (en) * 2012-05-21 2013-11-21 Samsung Electronics Co., Ltd Transmission mode and feedback designs to support mtc type devices in lte
WO2015069093A1 (fr) * 2013-11-11 2015-05-14 엘지전자(주) Procédé et appareil de connexion bluetooth
WO2015102467A1 (fr) * 2014-01-06 2015-07-09 삼성전자 주식회사 Appareil de commande de dispositif domestique et procédé de commande utilisant un dispositif pouvant être porté
WO2016003064A1 (fr) * 2014-07-03 2016-01-07 엘지전자(주) Procédé d'émission et de réception de données audio dans un système de communication sans fil prenant en charge une communication bluetooth et dispositif associé
WO2016013802A1 (fr) * 2014-07-23 2016-01-28 (주)이미지스테크놀로지 Procédé pour mettre par paires de multiples dispositifs électroniques et procédé pour commander des dispositifs électroniques l'utilisant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115988627A (zh) * 2022-12-22 2023-04-18 陕西天基通信科技有限责任公司 一种主从机时间同步的方法及装置

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KR101897536B1 (ko) 2018-09-13

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