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Method and device of processing topology control message

A technology of topology control and processing method, applied in electrical components, wireless communication, transmission systems, etc., can solve the problem of repeated transmission of messages, and achieve the effect of avoiding repeated diffusion and reducing the number of

Active Publication Date: 2015-03-11
NEW H3C TECH CO LTD
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Problems solved by technology

When the TC message of the MPP node itself changes, the MPP node sends a new TC message, and when MP2 and MP3 receive the new TC message from the MPP as the MPR node, they need to forward the new TC message, but , MP2 and MP3 have the same 1-hop neighbors, that is, MAP2 node and MAP4 node, then the MAP2 node will receive two identical new TC messages forwarded by MP2 and MP3, and the MAP4 node will also receive the forwarded by MP2 and MP3 Two identical new TC messages, which results in repeated transmission of messages

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  • Method and device of processing topology control message
  • Method and device of processing topology control message
  • Method and device of processing topology control message

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Embodiment Construction

[0033] In the OLSR protocol, each node selects a part of its neighbor nodes as its own MPR nodes. Only nodes elected as MPRs are responsible for flooding TC packets to the entire network. OLSR reduces the protocol overhead and optimizes the routing protocol by using the MPR mechanism. The MPR node periodically floods TC messages, including TC messages generated by itself and TC messages received from other MPR nodes. However, since multiple MPR nodes may have the same 1-hop neighbor, it will cause multiple copies of the same TC message to be transmitted to the same node.

[0034] In order to avoid the occurrence of the above situation, the embodiment of the present invention provides a method for processing TC messages in the OLSR protocol. First, it should be noted that the following method steps provided by the embodiment of the present invention are executed after the MPR election is completed. like figure 2 As shown, the method includes:

[0035] In step 201, the firs...

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Abstract

The invention provides a method of processing a topology control message. The method comprises the following steps that before a first node sends the TC (Topology Control) message to a direct-connected neighbor node which selects the first node as an MPR (MultiPoint Relay) node, the first node judges whether the neighbor node selects a plurality of MPR nodes including the first node; when the first node judges that the neighbor node selects the MPR nodes including the first node, the first node judges whether the first node conforms to the transmission conditions for sending the TC message to the neighbor node, when the first node judges that the first node conforms to the transmission conditions, the first node sends the TC message to the neighbor node, and when the first node judges that the first node does not conform to the transmission conditions, the TC message is not sent to the neighbor node. The invention further provides a device of processing the topology control message.

Description

technical field [0001] The invention relates to the technical field of wireless Ad hoc networks, in particular to a method and device for processing topology control messages. Background technique [0002] Wireless Ad hoc network (Mobile Ad hoc Network, MANET) is a highly dynamic, self-organizing and self-configuring wireless mesh network (Mesh network). The nodes in the network have the functions of terminals and routers at the same time, and the network does not depend on any Centralized access point or network infrastructure, and wireless nodes in the network establish link connections through radio frequency. [0003] The Optimized Link State Routing (OLSR) protocol is a dynamic routing protocol applied to wireless Ad hoc networks. The nodes in the wireless Ad hoc network need to periodically exchange various control information, update and build their own network topology map through distributed computing, and the nodes selected as MultiPoint Relay (MPR) by neighboring...

Claims

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Application Information

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IPC IPC(8): H04W24/02H04W40/02
CPCH04L41/12H04W24/02H04W40/02H04W40/023
Inventor 晁军显魏志广
Owner NEW H3C TECH CO LTD
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