Neighbor finding method for directional Ad Hoc network

A neighbor discovery and network technology, applied in access restriction, electrical components, wireless communication, etc., can solve the problems of isolated nodes unable to access the network, neighbor nodes taking a long time, message collision conflicts, etc., to reduce data collision conflicts and high reliability , time-consuming effect

Active Publication Date: 2014-07-09
NO 30 INST OF CHINA ELECTRONIC TECH GRP CORP
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Problems solved by technology

[0006] In the existing Ad Hoc network neighbor scanning method based entirely on directional antenna beam transmission / reception, although the advantages of directional antennas are fully utilized, there are serious message collisions in the neighbor discovery process in dense networks, and all neighbors are found Nodes take a long time, and there is a possibility that isolated nodes will never be able to access the network

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  • Neighbor finding method for directional Ad Hoc network
  • Neighbor finding method for directional Ad Hoc network
  • Neighbor finding method for directional Ad Hoc network

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Embodiment Construction

[0046] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0047]Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0048] A kind of directional Ad Hoc network neighbor discovery method, concrete method step is:

[0049] Step 1. Assign a unique node number in the entire network to the network access node, and encode the number in binary form;

[0050] Step two,...

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Abstract

The invention provides a neighbor finding method for a directional Ad Hoc network. An antenna active detection/passive monitoring mode of a node is determined based on the binary coding bit of the ID of the node, a channel resource is divided into a plurality of sub-channels through the CDMA or the OFDM technology, the number of the sub-channel which is occupied by the node is determined through an equal-probability random selection method, the purpose that multiple nodes send information alternately on different channels is achieved, the data collision conflict caused by the fact that the multiple nodes send information to the same node at the same time in the neighbor finding process is effectively reduced, the success probability of finding a neighbor node can be remarkably improved, and network networking time is shortened. By the adoption of the neighbor finding method for the directional Ad Hoc network, the neighbor node can be rapidly found in the Ad Hoc network with directional beam transmission being adopted completely, and the neighbor finding method for the directional Ad Hoc network is suitable for all networking scenes with network density being large from small. The neighbor finding method for the directional Ad Hoc network is easy to achieve, the time spent in finding all the neighbor nodes within a one-hop range is short, and reliability is high.

Description

technical field [0001] The invention relates to a directional Ad Hoc network neighbor discovery method, in particular to a directional Ad Hoc network neighbor discovery method suitable for the communication field. Background technique [0002] The directional antenna uses digital signal processing technology to generate spatially directional beams, and concentrates the transmitted signal energy in one or some specific directions for radiation without interfering with nodes sending and receiving signals in other directions, and by increasing the signal transmission rate and transmission To improve the spatial multiplexing rate of the wireless network and the overall performance of the network. However, compared with omnidirectional antennas, directional antennas also have some technical difficulties. For example, the conditions for effective communication between nodes using directional antennas for both sending and receiving become more stringent: figure 1 As shown, only wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W48/08H04W48/16
Inventor 李大双景中源谭齐武明张雷隋天宇
Owner NO 30 INST OF CHINA ELECTRONIC TECH GRP CORP
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