WO2006010331A1 - Procede de communication d'un terminal mobile - Google Patents

Procede de communication d'un terminal mobile Download PDF

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Publication number
WO2006010331A1
WO2006010331A1 PCT/CN2005/001135 CN2005001135W WO2006010331A1 WO 2006010331 A1 WO2006010331 A1 WO 2006010331A1 CN 2005001135 W CN2005001135 W CN 2005001135W WO 2006010331 A1 WO2006010331 A1 WO 2006010331A1
Authority
WO
WIPO (PCT)
Prior art keywords
mobile terminal
transmission time
packet
hoc network
wireless
Prior art date
Application number
PCT/CN2005/001135
Other languages
English (en)
Chinese (zh)
Inventor
Bing Xu
Original Assignee
Huawei Technologies Co., Ltd
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 Huawei Technologies Co., Ltd filed Critical Huawei Technologies Co., Ltd
Publication of WO2006010331A1 publication Critical patent/WO2006010331A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/10—Flow control between communication endpoints
    • H04W28/14—Flow control between communication endpoints using intermediate storage
    • 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 the field of mobile communication technologies, and in particular, to a communication method for a mobile terminal in a wireless self-organizing (Ad hoc) network.
  • Ad hoc wireless self-organizing
  • the Ad hoc network is a kind of wireless ad hoc network, which is a multi-hop temporary autonomous system composed of a group of mobile terminals with wireless transceivers.
  • Ad hoc means "for this” is extended to "for this purpose only", that is, the Ad hoc network is a special-purpose network set up for a certain purpose.
  • each mobile terminal has both a router and a host: as a host, the mobile terminal needs to run a user-oriented application; as a router, the mobile terminal needs to run a corresponding routing protocol according to a pre-configured routing policy and The routing table participates in packet forwarding and route maintenance. Therefore, the Ad hoc network has the characteristics of both mobile communication and computer network, and can be regarded as a special type of mobile computer communication network.
  • a route between mobile terminals usually consists of multiple network segments (hops). Due to the limited wireless transmission range of the mobile terminal, two mobile terminals that cannot communicate directly need to be forwarded through multiple intermediate nodes. Communication. Therefore, it is also known as a multi-hop wireless network, a self-organizing network, a network without a fixed facility, or a peer-to-peer network.
  • All mobile terminals in an Ad hoc network can move freely to form a network of any topology, which can work independently or connect to the Internet or cellular network.
  • the Ad hoc network can communicate with existing base stations.
  • two adjacent mobile terminals can perform direct "end-to-end" communication.
  • mobile terminal C and mobile terminal D can directly communicate; non-adjacent mobile terminals can be dynamic.
  • the search route is sent to the destination mobile terminal in a "multi-hop mode" by means of forwarding by other mobile terminals.
  • the mobile terminal B in Fig. 1 can communicate with the mobile terminal E through the mobile terminal D or the mobile terminal C.
  • Ad hoc networks can make more efficient use of wireless resources. For two mobile users with relatively close distances, communication requirements can be met with a small transmission power. For example, in Figure 1, mobile terminal C and mobile terminal D can communicate using a small transmission power. In the case of multi-hop, although the user data needs to be relayed multiple times to reach the receiving user, since the radio wave fading has a nonlinear characteristic, the total transmitting power of each relay is directly transmitted to the user than the sender. The transmit power required by the receiver is much smaller. At the same time, because each user's coverage is limited, the Ad hoc network has a high frequency reuse and a large system capacity.
  • the present invention provides a communication method for a mobile terminal, which can greatly reduce the processing complexity of the mobile terminal, and reduce interference between wireless signals transmitted by each mobile terminal, thereby increasing The capacity of large systems increases the efficiency of the system.
  • the communication method of the mobile terminal of the present invention is applicable to a wireless ad hoc network, and includes:
  • the mobile terminal determines whether it arrives at the data transmission time of the packet in which it is located, and if so, proceeds to step D, otherwise, returns to step C;
  • the mobile terminal sends its own cached data.
  • step A all mobile terminals in the wireless ad hoc network are grouped into: grouped according to the user identifier of the mobile terminal.
  • Step A groups all mobile terminals in the self-organizing network into:
  • the mobile terminal joins the order of the wireless ad hoc network to perform grouping.
  • I is the number of the group in which the mobile terminal is located
  • N is the order in which the mobile terminal joins the wireless ad hoc network
  • M is the number of packets
  • mod is the modulo operation.
  • the sending moment of setting data for each grouped mobile terminal is as follows:
  • the data transmission time of each packet mobile terminal is set according to the transmission time of each packet mobile terminal set in advance.
  • setting the data transmission time of each packet mobile terminal according to the transmission time of each packet mobile terminal set in advance includes:
  • the transmission time of each packet described in the present invention is the same.
  • the transmission time of each packet described in the present invention is different.
  • step C The judgment in step C is as follows: The mobile terminal determines, according to its own clock, whether it has reached the data transmission time of the packet in which it is located.
  • the communication method of the mobile terminal according to the present invention greatly reduces the probability that each mobile terminal transmits data at the same time by grouping the mobile terminals and setting the transmission time of the data for each mobile terminal of the packet. , also reduces the probability of being a plurality of data relays at the same time, thereby greatly reducing the processing complexity of the mobile terminal and increasing the standby time of the mobile terminal.
  • Figure 1 is a schematic diagram of an existing Ad hoc network
  • FIG. 2 is a flow chart of a method for communicating a mobile terminal according to the present invention. Mode for carrying out the invention
  • the present invention provides a communication method for the mobile terminal in the Ad hoc network.
  • the core idea of the method is to group mobile terminals of the Ad hoc network and assign different data transmission times to different packets. In this way, the probability that each mobile terminal transmits data at the same time can be greatly reduced, and the probability that a certain mobile terminal is simultaneously relayed as multiple data is also reduced, thereby greatly reducing the processing complexity of the mobile terminal and increasing the standby of the mobile terminal. Time, reduce the interference of wireless signals between mobile terminals, and improve the capacity and efficiency of the Ad hoc network.
  • FIG. 2 is a flowchart of a method for transmitting a mobile terminal according to the present invention. As shown in FIG. 2, the method of the present invention includes the following steps:
  • All mobile terminals in the Ad hoc network are grouped according to a preset number of packets.
  • the mobile terminals can be grouped by a plurality of grouping principles.
  • a preferred embodiment of the present invention provides a grouping principle for grouping according to a user identifier of a mobile terminal.
  • the user identifier of a mobile terminal is 1, and the group in which the mobile terminal is located is (N mod M)+l , where The operator mod represents the modulo operation.
  • the above operation The result shows that the remainder obtained by dividing N by M is rounded up by one.
  • Another preferred embodiment of the present invention provides a grouping principle for grouping according to the order in which mobile terminals join the Ad hoc network.
  • the sending time of each group of mobile terminals is preset by the Ad hoc network.
  • the Ad hoc network can set the same transmission time for each group of mobile terminals, or can set different transmission times for each group of mobile terminals.
  • the sending moment of setting data for each grouped mobile terminal described in this step specifically includes the following steps:
  • each packet is corresponding to one transmission time period
  • each packet sets the sending time of each packet to be the starting time of the corresponding sending time period. For example, if the mobile terminal is divided into M groups, the entire transmission time of the Ad hoc network should be divided into M transmission time segments, and each packet corresponds to one transmission time segment, that is, the mobile terminal of the first group is The first transmission time period transmits data, the second group of mobile terminals transmits data in the second transmission time period, and so on.
  • the transmission time of each group of mobile terminals is the same, which is 1 second
  • the data transmission time of the first group of mobile terminals can be set to be the first second and the sixth second.
  • the data transmission time of the second group of mobile terminals is ⁇ 2 seconds, 7th second, 12th second... and so on
  • the data transmission time of the fifth group mobile terminal is 5th. second, 10th second, 15th second...
  • the sending time of each group of mobile terminals is different, for example, the sending time of the first group and the second group of mobile terminals is 1 second, and the sending time of the third group to the fifth group is 2 seconds
  • the first group of mobile terminals may be set.
  • the data transmission time is 1st, 9th, and 17th
  • the data transmission time of the second group of mobile terminals is 2nd, 10th, 18th, and so on, and so on, the fifth group of mobile terminals
  • the data transmission time is 7th, 15th, 23rd...
  • the mobile terminal judges whether it has reached the data transmission time of the packet in its own group according to its own clock. If yes, it executes step D, and sends its own cached data. Otherwise, it returns to this step and waits for the sending time of the packet in which it is located.
  • the data in the relay can be transmitted at any time without being limited by the corresponding transmission time period.
  • the processing capacity of the mobile terminal of the Ad hoc network can be greatly reduced, and the standby time of the mobile terminal is increased.
  • the probability that each mobile terminal transmits data at the same time is reduced, the interference of wireless signals between mobile terminals can be reduced, and the capacity and communication efficiency of the Ad hoc network are greatly improved.

Abstract

L'invention concerne un procédé de communication d'un terminal mobile dans un réseau ad hoc. Ledit procédé consiste à grouper tous les terminaux mobiles dans un réseau ad hoc; à établir le temps de transmission de données pour le terminal mobile de chaque groupe; si le temps de transmission de données du groupe dans lequel se trouve un terminal mobile correspond à celui déterminé, à transmettre les données du dispositif de stockage tampon, et si tel n'est pas le cas, à revenir en arrière. La présente invention permet de réduire la probabilité de transmission simultanée de données du terminal mobile, et de réduire les difficultés de traitement. La probabilité de transmission simultanée de données de multiples terminaux mobiles étant réduite, les interférences hertziennes peuvent également être réduites, et la capacité et l'efficacité de communication du réseau ad hoc peuvent ainsi augmenter.
PCT/CN2005/001135 2004-07-28 2005-07-28 Procede de communication d'un terminal mobile WO2006010331A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNB2004100717862A CN1327721C (zh) 2004-07-28 2004-07-28 一种移动终端通信的方法
CN200410071786.2 2004-07-28

Publications (1)

Publication Number Publication Date
WO2006010331A1 true WO2006010331A1 (fr) 2006-02-02

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Application Number Title Priority Date Filing Date
PCT/CN2005/001135 WO2006010331A1 (fr) 2004-07-28 2005-07-28 Procede de communication d'un terminal mobile

Country Status (2)

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CN (1) CN1327721C (fr)
WO (1) WO2006010331A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2440001A1 (fr) * 2010-10-08 2012-04-11 Thales Procédé et dispositif de transmission d'informations en contention sur des créneaux temporels entre des noeuds émetteurs-récepteurs d'un réseau ad hoc

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102938880B (zh) * 2011-08-15 2015-12-16 宏碁股份有限公司 形成无线通信族群的方法
CN107276618B (zh) * 2017-07-20 2022-12-20 深圳络绎星和科技有限公司 多功能自组网设备及自组网通讯方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1262935A1 (fr) * 2001-05-31 2002-12-04 Siemens Aktiengesellschaft Procédé pour échanger des informations d'état via des connexions radio directes entre des terminaux d'abonné
CN1430424A (zh) * 2001-12-31 2003-07-16 深圳市中兴通讯股份有限公司上海第二研究所 移动通信系统中实现分组数据可靠传输的方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60210177T2 (de) * 2002-08-14 2006-12-28 Sony Deutschland Gmbh Bandbreitenorientierte Neukonfigurierung von drahtlosen Ad-Hoc-Netzen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1262935A1 (fr) * 2001-05-31 2002-12-04 Siemens Aktiengesellschaft Procédé pour échanger des informations d'état via des connexions radio directes entre des terminaux d'abonné
CN1430424A (zh) * 2001-12-31 2003-07-16 深圳市中兴通讯股份有限公司上海第二研究所 移动通信系统中实现分组数据可靠传输的方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2440001A1 (fr) * 2010-10-08 2012-04-11 Thales Procédé et dispositif de transmission d'informations en contention sur des créneaux temporels entre des noeuds émetteurs-récepteurs d'un réseau ad hoc
FR2965993A1 (fr) * 2010-10-08 2012-04-13 Thales Sa Procede et dispositif de transmission d'informations en contention sur des creneaux temporels entre des noeuds emetteurs-recepteurs d'un reseau ad hoc
US8873503B2 (en) 2010-10-08 2014-10-28 Thales Method and device for transmitting information in contention on time slots between transceiver nodes of an ad hoc network

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Publication number Publication date
CN1327721C (zh) 2007-07-18
CN1728835A (zh) 2006-02-01

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