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Group generation and maintenance method in wireless self-organizing network environment

A technology of wireless self-organization and network environment, applied in the field of group generation and maintenance of wireless ad-hoc network environment, can solve the problems of node energy balance group, etc., and achieve the effect of reducing load, reducing overhead, and strong scalability

Inactive Publication Date: 2013-10-23
SUZHOU INST FOR ADVANCED STUDY USTC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for generating a mobile node group in a wireless ad hoc network environment, which solves the problems of energy balance between nodes and group stability caused by the existing mobile node group construction method in the prior art

Method used

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  • Group generation and maintenance method in wireless self-organizing network environment
  • Group generation and maintenance method in wireless self-organizing network environment
  • Group generation and maintenance method in wireless self-organizing network environment

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Embodiment

[0035] In a wireless ad hoc network environment, when nodes communicate through radio frequency, there are usually the following constraints:

[0036] (1) All messages are broadcast messages, and the message can specify the destination node, but other nodes except the destination node will also receive this message. However, non-destination nodes will immediately discard this message after receiving it, and will not hand it over to the upper layer for processing.

[0037] (2) The communication channel between nodes is unreliable. That is to say, after node A sends a message to node B, the message may not be received by B.

[0038] (3) Nodes send messages in a time-sharing manner. In the process of sending a message A, if the node generates another message B that needs to be sent, the message B will be discarded directly.

[0039] (4) If two or more messages are sent to a node at the same time, the two messages can only receive the one that arrives first.

[0040] It is pre...

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Abstract

The invention discloses a method for generating a mobile node group in a wireless self-organizing network environment. The method is characterized in that each mobile node in a wireless self-organizing network configures a state of a node per se according to a finite-state mathematical model, and the method comprises the following steps that: (1) the mobile node broadcasts state information to a gateway at fixed time after being started until a reply message of a certain gateway in the wireless self-organizing network is received, the self-state is converted into a non-joined group state, and a message of the self-weight information is broadcast; (2) the mobile node positioned in the non-joined group state detects a joining invitation message of a peripheral cluster head node to join a mobile node group of the cluster head node, and the self-state is converted into a join group and is not a non-cluster head node state; (3) the mobile node positioned in the non-joined group state detects that a joinable mobile node group does not exist at the periphery, the mobile node converts the self-state into the cluster head node, a novel mobile node group is constructed, and the joining invitation message is broadcast. According to the method, the node can join the group or become a group in a short time after being started, the communication load of the gateway is greatly reduced, and the method has wide application prospects in a large-scale wireless self-organizing network environment.

Description

technical field [0001] The invention belongs to the technical field of wireless ad hoc networks, and in particular relates to a group generation and maintenance method suitable for a wireless ad hoc network environment based on group mobility. Background technique [0002] Group mobility (Group Mobility, GM) refers to a certain number of mobile nodes having the same or similar movement trends within a certain period of time in a multi-mobile terminal scenario (such as military training, fire rescue, earthquake, public transportation system, etc.), In this case, these nodes are organized into a mobile group, and the movement of the whole group is called group mobility. The group leader node manages the nodes in the group, which can effectively reduce the number of data packets sent and reduce the data transmission delay. [0003] Using group mobility technology to manage terminals in a multi-terminal environment has the following advantages: (1) Reflecting the real character...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/04H04W84/18
Inventor 黄刘生代伟超徐宏力
Owner SUZHOU INST FOR ADVANCED STUDY USTC
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