An Active Routing and Forwarding Method Based on Cooperative Diversity

A technology of cooperative diversity and forwarding method, which is applied in wireless communication, electrical components, etc., can solve the problems of high number of resources in routing methods, long TC messages, and decreased reliability of routing methods, so as to reduce collisions and improve reliability , the effect of reducing the number of resources

Inactive Publication Date: 2019-08-27
BEIJING XINWEI TELECOM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, in the case of dense distribution of nodes, due to the large number of one-hop neighbor nodes of the node and the long TC message, the routing method will have a high demand for resources, or the routing method will be reliable. decline of sex

Method used

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  • An Active Routing and Forwarding Method Based on Cooperative Diversity
  • An Active Routing and Forwarding Method Based on Cooperative Diversity
  • An Active Routing and Forwarding Method Based on Cooperative Diversity

Examples

Experimental program
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Effect test

Embodiment 1

[0037] In the self-organizing network in embodiment 1 and embodiment 2, nodes A, B, C...S, T are all nodes that use the active routing method proposed by the present invention. figure 1 Is the routing topology diagram after node A sends its own TC message in embodiment 1 and embodiment 2, figure 2 It is the routing topology diagram after node K sends its own TC message in embodiment 1 and embodiment 2. The following embodiment 1 and embodiment 2 will describe in detail the routing propagation process of the TC messages of node A and node K after the cooperative diversity active routing method of the present invention is adopted.

[0038] Example 1

[0039] In this embodiment, the resource location for forwarding the routing TC message is set to be one subframe after the TC message is received (the forwarding resource is always obtained by a fixed algorithm based on the previous hop resource, so as to ensure that the nodes with the same hop count are used The forwarding resources a...

Embodiment 2

[0051] In this embodiment, the resource location for forwarding the routing TC message is set to be the third subframe after the TC message is received, and the maximum forwarding hops is six hops, so the resources used by each node to forward the TC messages of node A and node K Location like Figure 4 As shown, the active routing propagation process used is as follows:

[0052] 1. Node A is in subframe a Obtain the periodic TC message transmission opportunity, broadcast and send the TC message of node A, and mark the hop number as the first hop; nodes B and D receive the first hop TC message of node A and decide to forward it, Subframe a according to the resource location of the received TC message , The resource location used for forwarding is calculated as subframe a ;

[0053] 2. Nodes B and D are in subframe a The TC message of node A is forwarded in the form of cooperative diversity, and the number of hops is marked as the second hop; node A receives the second hop TC me...

Embodiment 3

[0063] When a node obtains a TC message transmission opportunity, if it finds that the forwarding of another TC message has not ended while sending the TC message of the node, the following strategies can be adopted:

[0064] (1) Regardless of whether the time-frequency resource used by this routing message transmission opportunity is in conflict with the forwarding hops corresponding to another message forwarded by this node and the time-frequency resources used by the next two hops, the routing report of this node will be delayed. When the next routing message transmission opportunity comes after the forwarding of another routing message ends, the routing message of this node is sent again.

[0065] (2) Regardless of whether the time-frequency resource used by this routing message transmission opportunity is in conflict with the forwarding hops corresponding to another message forwarded by this node, and the time-frequency resources used by the next two hops, it will be postponed ...

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Abstract

The invention discloses an active routing forwarding method based on cooperative diversity, comprising: all nodes having identical hops use same time frequency resources when a same routing message is forwarded. The active routing forwarding method can dramatically reduce a number of recourses needed by a single routing packet finishing flooding, saves time frequency resources occupied by the active routing method, reduces possible conflictions when a node transmits a message, and improves reliability of the active routing to some extent.

Description

Technical field [0001] The present invention relates to the field of wireless communication, in particular to an active routing and forwarding method based on cooperative diversity. Background technique [0002] At present, the common and mature OLSR active routing method process includes all nodes in the network periodically broadcast and send out routing Hello messages carrying information such as their own IDs, and nodes listen to Hello messages sent by neighboring nodes to achieve one-hop neighbor Discovery of nodes; all nodes in the network periodically get routing transmission opportunities. On this transmission opportunity, the node broadcasts the TC carrying information such as its own ID, all one-hop neighboring node IDs, and link quality to all one-hop neighboring nodes. Message: The node listens to the TC message sent by the neighboring node and broadcasts and forwards the TC message of the neighboring node on the periodic routing transmission opportunity to realize th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/02
Inventor 周淼孙鹏俞岚李静叶
Owner BEIJING XINWEI TELECOM TECH
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