A wireless mesh network opportunity routing algorithm based on quality of service guarantee

A quality of service guarantee and routing technology, applied in the field of wireless communication, to achieve the effect of ensuring reliability, improving real-time utilization efficiency, and ensuring service quality requirements

Active Publication Date: 2019-06-25
NANJING UNIV OF POSTS & TELECOMM
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AI Technical Summary

Problems solved by technology

For wireless mesh networks, in order to further pay attention to the quality of service requirements of data transmission, the traditional routing protocols used in wireless multi-hop networks can no longer meet the requirements, and new routing algorithms need to be designed to meet the quality of service requirements of data transmission

Method used

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  • A wireless mesh network opportunity routing algorithm based on quality of service guarantee
  • A wireless mesh network opportunity routing algorithm based on quality of service guarantee
  • A wireless mesh network opportunity routing algorithm based on quality of service guarantee

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Embodiment 1

[0058] see figure 1 , the present embodiment provides a wireless mesh network opportunistic routing algorithm based on quality of service guarantee, comprising the following steps:

[0059] S1. Each node in the wireless mesh network periodically exchanges information, maintains and updates the neighbor table, and obtains the status information of the next-hop neighbor node;

[0060] S2. The node that needs to forward data broadcasts a routing request, and the neighbor node that receives the routing request calculates the distance to the destination node, and replies a routing response to the node that needs to forward data;

[0061] S3. According to the received routing response, the node that needs to forward the data forms the neighbor nodes that reply the routing response into an available neighbor node set. The neighbor nodes of the jump node form the set of available next-hop nodes;

[0062] S4. The node that needs to forward the data sets the ratio of the channel capac...

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Abstract

The invention provides a wireless mesh network opportunity routing algorithm based on service quality assurance, belongs to the technical field of wireless communication, and aims at periodically interacting information with each node in a network to obtain the real-time state of the network. When a node needs to forward service data, firstly, a candidate node forwarding range is selected directionally according to geographical location information; and then according to the network state and service quality requirements, selecting an appropriate candidate next hop node set, and carrying out priority ranking on the candidate next hop nodes, the higher the priority is, the more possible the next hop is. And if no candidate node successfully becomes the next hop, temporarily caching the data, and re-sending the routing request. According to the invention, the real-time state of the network link is combined, the service quality requirement is fully considered in the process of selecting the candidate next hop node to forward the data, and the priority ranking is carried out on the candidate next hop node, so that the reliability of data forwarding is ensured, and the service quality requirement of data forwarding is effectively ensured on the basis of improving the real-time utilization efficiency of the network.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a wireless mesh network opportunistic routing algorithm based on quality of service guarantee. Background technique [0002] In a traditional wireless local area network (Wireless LAN), each user can access the network by connecting to a fixed access point (AP: Access Point) through a wireless link, which belongs to a single-hop network structure. Although this method brings more convenience to the user than the wired connection method. However, due to the limited range of wireless communication between fixed APs and users, and obstacles have a greater impact on communication between two points, it is difficult for traditional WLANs to achieve ideal coverage and scalability. [0003] Wireless mesh network (WMN: Wireless Mesh Networks) is a typical wireless multi-hop network. It is considered to be the most self-organizing wireless network due to its ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/12H04L12/725H04L12/721
CPCH04W40/12Y02D30/70
Inventor 朱洪波倪介元朱晓荣纪言
Owner NANJING UNIV OF POSTS & TELECOMM
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