A multi-node cooperative packet transmission method based on multi-hop network

A wireless multi-hop network and packet transmission technology, applied in wireless communication, electrical components, etc., can solve the problems of reducing end-to-end throughput, increasing transmission delay, unreliability, etc., achieving energy consumption balance and improving survival time , The effect of improving the probability of successful packet transmission

Active Publication Date: 2021-07-23
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the unreliability of wireless transmission itself, packet loss in fixed point-to-point routing will directly lead to repeated transmission, increasing transmission delay and reducing end-to-end throughput

Method used

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  • A multi-node cooperative packet transmission method based on multi-hop network
  • A multi-node cooperative packet transmission method based on multi-hop network
  • A multi-node cooperative packet transmission method based on multi-hop network

Examples

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Embodiment Construction

[0022] In order to further illustrate the implementation method of the present invention, an implementation example is given below. This example is only meant to illustrate the principle of the present invention, and does not represent any limitation of the present invention.

[0023] 1) Design of coordinated multi-point transmission method

[0024] (1) Example of communication flow during transmission

[0025] It is assumed that any node that successfully receives the data packet will broadcast an ACK message containing node information, and at the same time, necessary control messages are needed to support the cooperative transmission of nodes during the communication process. image 3 A specific communication example of coordinated multi-point transmission is given. The control messages that may be involved in the communication process are described in detail here to support the feasibility of this method. Note that the following single-hop source node is used to represent...

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Abstract

The invention relates to a multi-point cooperative packet transmission method for a wireless multi-hop network. The method mainly includes two steps of source node packet transmission and multi-point cooperative packet transmission. First, the source node broadcasts the data packet to the neighbor nodes; then, the cluster head node is selected from the nodes that receive the data packet, and the cluster head node organizes the node that successfully receives the data packet to transfer the data packet The packet is sent to the receiving node that is closer to the destination node, and then a new cluster head node is selected from the nodes that newly receive the data packet, and this process is iterated until the destination node receives the data packet. The method reduces the data transmission delay by utilizing the broadcast characteristic of the wireless channel and multi-point coordinated transmission.

Description

technical field [0001] The invention belongs to the technical field of communication networks, relates to a data transmission method in a wireless multi-hop network, and is used for reducing the total time delay of data transmission. Background technique [0002] 1) Wireless multi-hop network [0003] The so-called wireless multi-hop network means that nodes in a wireless ad hoc network or a wireless sensor network self-organize into a communication network. In this network, nodes can communicate with each other, but due to the limited energy and transmission power of a single node, two nodes that are far away need to use other nodes to complete data multi-hop forwarding, thus forming a wireless ad hoc multi-hop network without a center. Jump network. Generally, each node in a wireless multi-hop network has both functions of a router and a host. [0004] In a traditional wireless multi-hop network, the routing path between the source node and the destination node is usual...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/04H04W40/24
CPCH04W40/04H04W40/24
Inventor 程建明欧泽良欧阳崇峻杨鸿文
Owner BEIJING UNIV OF POSTS & TELECOMM
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