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WO2012077847A1 - Procédé de communication dans réseau de capteurs sans fil - Google Patents

Procédé de communication dans réseau de capteurs sans fil Download PDF

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Publication number
WO2012077847A1
WO2012077847A1 PCT/KR2010/008937 KR2010008937W WO2012077847A1 WO 2012077847 A1 WO2012077847 A1 WO 2012077847A1 KR 2010008937 W KR2010008937 W KR 2010008937W WO 2012077847 A1 WO2012077847 A1 WO 2012077847A1
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WO
WIPO (PCT)
Prior art keywords
repeater
data
tag group
communication
relay
Prior art date
Application number
PCT/KR2010/008937
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English (en)
Korean (ko)
Inventor
김형준
Original Assignee
주식회사 에이에스엔
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 에이에스엔 filed Critical 주식회사 에이에스엔
Publication of WO2012077847A1 publication Critical patent/WO2012077847A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • 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

Definitions

  • the present invention relates to a communication method in a wireless sensor network, and more particularly, to a communication method in a wireless sensor network for receiving data of a tag group located at a far distance in a repeater.
  • a wireless sensor network is largely composed of a sensor node and a sink node that collects and exports it to the outside. And, unlike the existing network, the wireless sensor network is not a means of communication, but an automatic remote information collection, and is widely used in various applications such as scientific, medical, military, and commercial purposes.
  • a wireless sensor network including a communication control device, a tag group, and a plurality of relays performing a wireless relay function between the communication control device and the tag group
  • a wireless relay is performed.
  • an object of the present invention is to provide a communication method in a wireless sensor network that can normally perform a wireless relay function even when any relay is incapable of communication among a plurality of repeaters. .
  • a communication method in a wireless sensor network includes a communication control device, a tag group and a repeater which performs a wireless relay function between the communication control device and a tag group.
  • the repeaters are a plurality of repeaters arranged in a line, each performing a wireless repeating function sequentially, and if a neighboring repeater is determined to be incapable of communication, the repeater is a wireless repeating function with a repeater next to the neighboring repeater. It characterized in that to perform.
  • the communication method includes transmitting data to a neighboring repeater; If the acknowledgment message is not received from the neighboring repeater within the reception waiting time, determining the neighboring repeater as incapable of communicating; Transmitting data to a repeater next to the neighboring repeater; Receiving an acknowledgment message within a reception waiting time from a repeater next to the neighboring repeater, determining that the repeater next to the neighboring repeater is in a communicable state and performing a wireless repeating function with the repeater following the neighboring repeater. have.
  • each of the plurality of repeaters may perform a wireless relay function through one occupied channel.
  • a channel of a tag group managed by each of the plurality of repeaters may perform wireless communication from a communication control device to a designated channel.
  • the plurality of relays may transmit and receive mutual sync data at a designated time, and may poll data request commands of a tag group at predetermined intervals.
  • the tag group may transmit data or acknowledgment data to the relay upon receiving a polling command from the relay.
  • the plurality of repeaters may store the tag data received from the tag group, and transmit the data stored in the communication time of the plurality of repeaters.
  • the tag group when the tag group receives command data including wake-up time information for setting an idle mode from the repeater, the tag group includes an idle mode and a standby mode, which are power saving modes in a wake-up time period included in the received command data.
  • the link may be completed by repeating the wake-up mode and transmitting acknowledgment data according to command data reception to the repeater.
  • the wireless communication frequency band of the plurality of repeaters and tag groups may be 424MHz or 433MHz.
  • the data of the tag group is collected by the communication control apparatus by skipping the relay in the incapable state and automatically performing a wireless relay function with another neighboring repeater.
  • FIG. 1 is a conceptual diagram of a wireless sensor network according to the present invention.
  • FIG. 2 is a flow chart illustrating a communication method in a wireless sensor network in accordance with the present invention.
  • FIG. 3 is a communication protocol diagram illustrating a communication method when the repeater is normal in the wireless sensor network according to the present invention.
  • 4 and 5 are communication protocol diagrams illustrating a communication method when the repeater is incapable of communicating in the wireless sensor network according to the present invention
  • FIG. 6 is a repeater automatic relay flow chart in the wireless sensor network according to the present invention.
  • FIG. 7 is a data upload flow chart of FIG. 6.
  • FIG. 8 is a data relay and tag data upload flow chart of FIG. 6.
  • FIG. 1 is a conceptual diagram of a wireless sensor network according to the present invention
  • FIG. 2 is a flowchart illustrating a communication method in a wireless sensor network according to the present invention
  • FIG. 3 is a communication when a repeater is normal in a wireless sensor network according to the present invention
  • 4 and 5 are communication protocol diagrams illustrating a communication method when a repeater is incapable of communicating in the wireless sensor network according to the present invention.
  • the wireless sensor network performs a wireless relay function between the communication control device 110, the tag group 130, and the communication control device 110 and the tag group 130. It includes a repeater 120.
  • the communication control device 110 transmits command data for controlling the tag group 130 to the relay 120 as a kind of computer or a control unit for controlling the tag group 130.
  • the tag group 130 receives sync data from the repeater 130, corrects time, synchronizes with the repeater 130, and analyzes command data received from the repeater 120.
  • the repeater 120 performs a wireless relay function sequentially as a plurality of repeaters arranged in a line, and if the neighboring repeater is determined to be incapable of communication, the repeater 120 performs a wireless relay function together with a repeater next to the neighboring repeater.
  • the neighbor transmits data to the repeater, and if there is no acknowledgment signal (ACK) from the neighboring repeater, data is transmitted to the repeater next to the neighboring repeater to receive the acknowledgment signal and then performs an automatic relay function.
  • ACK acknowledgment signal
  • the wireless sensor network in the wireless sensor network according to the present invention, first, data is transmitted to a neighboring relay (S110). If the acknowledgment message (ACK) is not received from the neighboring repeater within the reception waiting time, the neighboring repeater is determined to be in an incapable communication state (S120) (S130).
  • ACK acknowledgment message
  • the second relay 2 of the repeaters 120 in the wireless sensor network is incapable of communication, and thus shows a communication inability state when the command data is transmitted from the repeater 120 to the tag group 130. That is, when the command data is transmitted from the repeater 120 to the tag group 130, since the second repeater 2 is incapable of communication, it shows the state of automatically relaying from the first repeater 1 to the third repeater 3.
  • the repeater 120 may store tag data received from the tag group 130 and transmit data stored at a predetermined repeater communication time.
  • the repeater 120 wirelessly communicates with the tag group 130 to control the output of the tag group 130. Specifically, the repeater 120 transmits sync data at a predetermined period, and wakes up time (WUT) when necessary. Send command data for setting Wake Up Time or output time.
  • WUT wakes up time
  • each of the plurality of repeaters 120 may perform a wireless relay function through one occupied channel.
  • a channel of the tag group 130 managed by each of the plurality of repeaters 120 may perform wireless communication from the communication control device 110 to a designated channel.
  • the plurality of repeaters 120 may transmit and receive mutual sync data at a specified time, and poll the data request command of the tag group 130 at a predetermined interval (for example, one second) at other times. .
  • the polling inquires each tag of the tag group 130 in the presence or absence of a transmission request, and instructs the tag to start transmission if there is a request. Control method.
  • the tag group 130 may transmit data or acknowledgment data (ACK) to the relay 120.
  • ACK acknowledgment data
  • the tag group 130 When the tag group 130 receives command data including wake up time (WUT) information for setting an idle mode from the repeater 120, the tag group 130 may wake up included in the received command data.
  • the link may be completed by repeating the idle mode, which is a power saving mode, and the wake up mode, which is a standby mode for reception, and transmitting acknowledgment data according to command data reception to the repeater.
  • the tag group 130 preferably has a unique ID previously assigned to each tag so as to be identified by the relay 120.
  • the wireless communication frequency bands of the plurality of repeaters 120 and the tag group 130 may be 424MHz or 433MHz, which is a high frequency band so as to secure an active and long recognition distance.
  • FIG. 6 is a repeater automatic relay flow chart of the wireless sensor network according to the present invention
  • FIG. 7 is a data upload flow chart of FIG. 6
  • FIG. 8 is a data relay and tag data upload flow chart of FIG. 6.
  • the repeater waits for data reception in an initialization state, and when receiving data, transmits an acknowledgment message (ACK), and then analyzes the received data (S210), (S220), (S230), (S240), and (S250). ).
  • ACK acknowledgment message
  • the tag channel switching, the relay channel switching, and the data uploading process are performed (S270), (S271), (S272), and (S273).
  • the data is transmitted to the upper relay, and if the acknowledgment message (ACK) is not received and the reception waiting time is exceeded, the data is transmitted to the hopping ID repeater (S274), (S275), (S276), and (S277). That is, if the neighboring repeater fails to receive the acknowledgment message (ACK) and the reception waiting time is exceeded, the data is transmitted to the repeater next to the neighboring repeater.
  • the acknowledgment message (ACK) is not received and the reception waiting time is exceeded, it is treated as a communication error (S278), (S279), and (S280). That is, not only the neighboring repeater but also the repeater next to the neighboring repeater fails to receive the acknowledgment message (ACK), and the reception waiting time is exceeded.
  • the receiver When receiving the acknowledgment message (ACK), the receiver waits for reception from the lower repeater and receives and returns data (S298), (S299) and (S302). At this time, when receiving an acknowledgment message (ACK) and waiting to receive from the lower repeater but not receiving data and exceeding the reception waiting time, it is treated as a communication error (S298), (S299), (S300), and (S301).
  • the communication process is processed as a communication error (S296), (S297), and (S301). That is, not only the neighboring repeater but also the repeater next to the neighboring repeater fails to receive the acknowledgment message (ACK) and the reception waiting time is exceeded, so that the communication error is finally processed.
  • the wireless relay function is performed together with the repeater, the data of the tag group can be conveniently collected by the communication control device.

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

Abstract

La présente invention concerne un procédé de communication dans un réseau de capteurs sans fil et, plus particulièrement, un procédé de communication dans un réseau de capteurs sans fil qui comprend : une unité de commande de communication ; un groupe d'étiquettes ; un relais pour effectuer une fonction de relais sans fil entre l'unité de commande de communication et le groupe d'étiquettes, le relais étant composé d'une pluralité de relais agencés selon une ligne, chaque relais effectuant de manière séquentielle la fonction de relais sans fil, et le relais effectuant une fonction de relais sans fil conjointement avec le relais à côté du relais adjacent lorsque le relais adjacent est dans un état de communication impossible. La présente invention peut effectuer une fonction de relais sans fil normale par réalisation automatique de la fonction de relais sans fil conjointement avec un autre relais adjacent lorsque l'un quelconque de la pluralité de relais est dans l'état de communication impossible.
PCT/KR2010/008937 2010-12-07 2010-12-14 Procédé de communication dans réseau de capteurs sans fil WO2012077847A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020100124112A KR101217773B1 (ko) 2010-12-07 2010-12-07 무선 센서 네트워크에서의 통신 방법
KR10-2010-0124112 2010-12-07

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WO2012077847A1 true WO2012077847A1 (fr) 2012-06-14

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103404202A (zh) * 2012-08-08 2013-11-20 华为终端有限公司 一种确定中继设备的方法、站点、接入点、中继设备及系统
CN109257717A (zh) * 2018-11-02 2019-01-22 济南新吉纳远程测控股份有限公司 低功耗连续数据传输方法、无线传感节点及无线传感网络
CN113242078A (zh) * 2021-04-13 2021-08-10 中国科学院生态环境研究中心 一种无人机数据平台与地面监测站之间的无线连接系统
CN115835060A (zh) * 2023-02-17 2023-03-21 云南瀚哲科技有限公司 工农业物联网的数据采集方法

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* Cited by examiner, † Cited by third party
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KR101398501B1 (ko) * 2013-03-25 2014-05-27 (주)다보링크 무선중계기의 전원절약 지원장치 및 그 지원방법
KR101496641B1 (ko) * 2013-04-25 2015-03-02 주식회사 에이에스엔 중계기 노드 연결 방법
WO2015026111A1 (fr) * 2013-08-18 2015-02-26 엘지전자 주식회사 Procédé et appareil d'exploitation de répéteurs dans un système de communications sans fil
CN104469695B (zh) 2013-09-12 2019-02-05 华为技术有限公司 网络接入方法、近距离通信服务器、中继终端及终端
WO2015156436A1 (fr) * 2014-04-09 2015-10-15 유넷시스템주식회사 Dispositif de traitement d'informations de substitution
CN104483936A (zh) * 2014-12-02 2015-04-01 黄河科技学院 一种无线数据接入系统的无线网络信息收集平台
KR101651350B1 (ko) * 2015-02-27 2016-08-25 경상대학교산학협력단 시간지연 개선 저복잡도 인-네트워크 컴퓨팅 장치 및 방법

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KR100936130B1 (ko) * 2008-05-20 2010-01-12 강릉원주대학교산학협력단 무선 센서 네트워크 시스템

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KR20060089501A (ko) * 2005-02-04 2006-08-09 삼성전자주식회사 센서 네트워크에서 라우팅 경로 설정 장치 및 방법
KR100826993B1 (ko) * 2006-04-03 2008-05-07 연세대학교 산학협력단 알에프아이디/유에스엔을 적용한 개체 기반 파라미터모니터 시스템
JP2009071564A (ja) * 2007-09-13 2009-04-02 Meidensha Corp 無線ネットワーク通信システム、通信方法およびプログラム
KR20090066120A (ko) * 2007-12-18 2009-06-23 한국전자통신연구원 다중 채널 기반의 센서노드의 송신장치, 송신방법,수신장치, 수신방법 및 채널상태정보갱신방법

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103404202A (zh) * 2012-08-08 2013-11-20 华为终端有限公司 一种确定中继设备的方法、站点、接入点、中继设备及系统
WO2014022996A1 (fr) * 2012-08-08 2014-02-13 华为终端有限公司 Procédé pour déterminer un dispositif de relais, station, point d'accès, dispositif de relais et système
CN109257717A (zh) * 2018-11-02 2019-01-22 济南新吉纳远程测控股份有限公司 低功耗连续数据传输方法、无线传感节点及无线传感网络
CN113242078A (zh) * 2021-04-13 2021-08-10 中国科学院生态环境研究中心 一种无人机数据平台与地面监测站之间的无线连接系统
CN115835060A (zh) * 2023-02-17 2023-03-21 云南瀚哲科技有限公司 工农业物联网的数据采集方法
CN115835060B (zh) * 2023-02-17 2023-05-05 云南瀚哲科技有限公司 工农业物联网的数据采集方法

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KR20120063081A (ko) 2012-06-15
KR101217773B1 (ko) 2013-01-02

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