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A neighbor discovery method for ad hoc networks

A self-organizing network and neighbor discovery technology, applied in network data management, electrical components, wireless communication, etc., can solve problems such as inability to obtain neighbor information tables, increase nodes in worst-case discovery delay, and increase conflicts, so as to speed up neighbor discovery process, improving neighbor discovery efficiency, and avoiding conflicts

Active Publication Date: 2018-12-25
北京中科晶上超媒体信息技术有限公司
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Problems solved by technology

However, in practice, when the time slots of two nodes are strictly aligned, the problem of just missing the neighbor discovery message will occur. In addition, in the application scenario with a large node density, if multiple nodes For sending beacons, the probability of collisions increases significantly
Both of these situations will cause the node pairs to fail to discover each other, and the existing deterministic neighbor discovery protocols have no measures to detect or avoid these situations, which will greatly increase the worst discovery delay of deterministic neighbor discovery or make The node cannot obtain the complete neighbor information table

Method used

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  • A neighbor discovery method for ad hoc networks
  • A neighbor discovery method for ad hoc networks
  • A neighbor discovery method for ad hoc networks

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Embodiment Construction

[0036] In order to make the purpose, technical solution, design method and advantages of the present invention clearer, the present invention will be further described in detail through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0037] The following will refer to figure 1 Describe the neighbor discovery method of the self-organizing network of the present invention, in figure 1 In the time slot-interval model of node i and node j shown, the continuous time is divided into intervals of equal length, and each interval is called a time slot. These time slots are divided into sleep time slots and wake-up time slots. In the sleep time slot, the node is in a low-power sleep state, and cannot send beacons and cannot monitor channels. In the wake-up time slot, the node is in an active state, and can monitor...

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Abstract

The invention provides a neighbor discovery method of an ad hoc network. The method comprises the following steps: a node performs carrier sensing in a configured wake-up slot to determine a current channel state; and according to the detected channel state, the node determines to monitor a beacon sent by a neighboring node or to send a beacon for neighbor discovery. According to the method of theinvention, the collision of beacons sent between neighboring nodes can be reduced, the probability of neighbor discovery can be improved, and the discovery speed can be accelerated.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a neighbor discovery method of an ad hoc network. Background technique [0002] Wireless collaborative network or wireless self-organizing network is a new type of wireless network, which does not need the support of fixed communication facilities. Nodes in the network can dynamically join or leave the system, and it has strong self-organizing ability and invulnerability. In a wireless collaborative network, network nodes must cooperate with each other to establish routing information for communication. However, after deployment, nodes in a wireless ad hoc network are isolated from each other and do not know the information of other nodes. Without the support of basic communication equipment, nodes must discover each other to form an ad hoc network. Usually, a pair of nodes within the communication range of each other are called neighbor nodes of each other. In a ...

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Application Information

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IPC IPC(8): H04W74/08H04W8/00
CPCH04W8/005H04W74/0816
Inventor 高明晋沈茹婧牟林宏蔡颜魁袁尧石晶林
Owner 北京中科晶上超媒体信息技术有限公司
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