Wireless network multi-path routing network coding transmission method

A technology of network transmission and wireless network, which is applied in the field of wireless communication network, can solve problems such as increasing the number of network transmission times and delay, too fast network performance decline, and multi-node storage space, so as to reduce the pressure of computing and storage, and reduce heavy The effect of hop count and strong network performance

Inactive Publication Date: 2010-04-07
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this protocol requires the node to send the local message to the neighbor node again after receiving the message, which increases the number of network transmissions and delay. If the network is congested, it may consume more node storage space
The recent OMNC (X. Zhang, B. Li. "Optimized MultipathNetwork Coding in Lossy Wireless Networks". IEEE JOURNAL ON SELECTED AREASIN COMMUNICATIONS, VOL.27, NO.5, JUNE 2009.) program has proposed improvements to the existing program , adding rate control in the transmission process, but this scheme still has the problems of too long delay, too high requirements on nodes, and too fast network performance degradation under congestion conditions

Method used

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  • Wireless network multi-path routing network coding transmission method
  • Wireless network multi-path routing network coding transmission method
  • Wireless network multi-path routing network coding transmission method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Embodiment 1: Example of network initialization

[0077] exist figure 2 In the mesh network shown, assuming that there are two source nodes, four relay nodes and two destination nodes, the network initialization steps of the multi-path routing network transmission coding are as follows:

[0078] Step 1, the source node 1 and the source node 2 broadcast and send the initialization packet, at this time, the series flag bit of the initialization packet is 1;

[0079] Step 2, relay node 3 and relay node 4 receive the broadcast from source node 1, relay node 3 and relay node 4 confirm that source node 1 is their neighbor node, and add the series flag bit of the initialization packet to 1. Continue to forward the initialization packet; at this time, the series flag bit of the initialization packet is 2;

[0080] Step 3, relay node 3 and relay node 5 receive the broadcast from source node 2, relay node 3 and relay node 5 confirm that source node 2 is their neighbor node, an...

Embodiment 2

[0088] Embodiment 2: Example of data transmission

[0089] exist figure 2 In the mesh network shown, it is assumed that there are two source nodes, four relay nodes, and two destination nodes. Assuming that the network has been initialized, source node 1 needs to send message A and message B to destination node 7 and destination node 7. Node 8; source node 2 needs to send message P 1 and message P 2 To the sending destination node 7 and destination node 8; because it is a wireless network, each node can not carry out the sending and receiving work at the same time, so the data transmission of its multi-channel routing network transmission code is carried out according to the following steps:

[0090] In the first step, source node 1 broadcasts message A, and relay node 3 and relay node 4 receive message A;

[0091] In the second step, source node 2 broadcasts message P 1 , relay node 3 and relay node 5 receive message P 1 ; At the same time, relay node 4 directly broadca...

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Abstract

The invention discloses a wireless network multi-path routing network transmission method aiming to solve the problem that the existing network coding transmission methods need many time slots, and have too many data transmission times and too high demand for nodes. The main steps of the method are network initialization and data transmission; the network initialization is mainly to determine the level of each node and the neighbor node information and complete networking; the data transmission is that a node judges the zone bits of message packets to perform different treatments to different kinds of message packets, judges the zone bits of the levels of message packets to selectively receive the desired information, judges the local information pool and neighbor information list to select the optimal network coding and performs primary data transmission to complete information transmission and the information transmission of the node. The invention has the advantage of less time slots and data transmission times and lower demand of nodes for network and can be used for multi-user wireless data transmission.

Description

technical field [0001] The invention belongs to the field of wireless communication networks, and relates to network coding technology and multi-path routing technology. Specifically, for a wireless communication network with N mobile users, M relay nodes and L destination nodes, it is designed to improve Multi-way routing network transmission method for network throughput and transmission performance for mobile users. Background technique [0002] Using the relay to help mobile users forward data can obtain additional diversity gain and improve the bit error BER performance of the receiving end. Traditional relay schemes generally adopt a single routing setting, and the routing between nodes is relatively fixed, which greatly reduces the possibility of information fusion. However, if multi-routing is used, the probability of network coding can be greatly improved, and the capacity bottleneck of traditional relay solutions can be solved. [0003] Network coding can improve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/06H04W40/22
Inventor 周宁吴华刘景伟李颖
Owner XIDIAN UNIV
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