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Mobile ad-hoc network congestion control method based on OLSR protocol

A mobile self-organization and network congestion technology, applied in network topology, network traffic/resource management, broadcast service distribution, etc., can solve the problems of no center, high overhead, etc., achieve small computing burden, ensure normal control, and reduce data weight The effect of passing probability

Inactive Publication Date: 2015-10-28
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
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  • Application Information

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Problems solved by technology

[0007] (2) No center
However, the limited bandwidth resources in wireless networks and the large cost of broadcasting have become a contradiction in active routing protocols. The main purpose of OLSR is to effectively limit the broadcast information of nodes.

Method used

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  • Mobile ad-hoc network congestion control method based on OLSR protocol
  • Mobile ad-hoc network congestion control method based on OLSR protocol
  • Mobile ad-hoc network congestion control method based on OLSR protocol

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Embodiment Construction

[0041] In the following, the embodiments and implementation steps of the present invention will be described in detail with reference to the drawings.

[0042] According to the method of controlling flooding by OLSR, after receiving the routing information broadcast by neighbor nodes, a node will not list all neighbor nodes as its own MPR forwarding nodes, but only selectively retain one related to the destination node. Therefore, under certain network topology conditions, there will be two or more nodes, and the same node will be selected as the MPR forwarding node, such as figure 2 Shown. figure 2 Middle node 1 has two neighbor nodes: 7, 3, and node 2 has two neighbor nodes: 3, 8. Among them, node 3 is selected as the MPR node by both nodes 1 and 2. At this time, the partial situation of the forwarding routing table in nodes 1 and 2 is as follows image 3 Shown. When nodes 1 and 2 have a large amount of data to be forwarded through node 3, the probability of congestion on no...

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Abstract

The invention relates to a mobile ad-hoc network (MANET) congestion control method based on an OLSR protocol and belongs to the field of wireless network routing protocols. According to the method, by means of a regular broadcast updating function of a route table between neighbor nodes, standby forwarding nodes are selected through a channel occupancy rate such that more forwarding nodes of a specific target node are obtained, thereby dispersing forwarding paths and reducing congestion degree in a network. Only one channel occupancy rate item is added when the route table is broadcasted such that the method has very low burden on a whole system and is easy to be implemented in practical application. The method may acquires the topological structure and the node information of the network in real time, and updates the forwarding nodes in the route table in real time according to the channel occupancy rate, guarantees normal control of the whole network, and prevents congested points and flooding broadcast, and is suitable for wireless MANETs using the OLSR protocols and wired networks using the OLSR protocols.

Description

Technical field [0001] The invention relates to a mobile ad hoc network (MANET) congestion control method based on an optimized link state routing protocol (OLSR), and belongs to the field of wireless network routing protocols. Background technique [0002] Mobile Ad Hoc Network (MANET) is a network that combines mobile communication and computer network, and is a type of mobile computer communication network. As a non-centralized, distributed control network, MANET network is an autonomous wireless multi-hop network. The entire network has no fixed infrastructure. It can provide a kind of communication when the existing network infrastructure is not used or inconvenient. The supporting environment broadens the application scenarios of mobile networks. [0003] Specifically, the MANET network is a wireless mobile communication network composed of a group of mobile nodes with wireless information sending and receiving devices. It does not rely on preset infrastructure. The mobile n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/06H04W28/02H04W40/32H04W84/18
CPCH04W4/06H04W28/0289H04W40/32H04W84/18
Inventor 张全新朱红程子敬曲家庆谭毓安李元章马忠梅
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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