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A bandwidth-based routing optimization method for wireless mesh networks

An optimization method and wireless technology, applied in the field of communication, can solve problems such as low transmission rate and the influence of network bandwidth path selection without consideration

Active Publication Date: 2021-05-14
江苏软仪科技集团股份有限公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The performance of the BATMAN-adv protocol in the anti-jamming and multi-hop scenarios is relatively sudden, but because it only uses the success rate of data transmission as the only path quality judgment standard, it does not take into account the influence of network bandwidth on path selection, resulting in the existence of selected Case of lower transmission rate path

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  • A bandwidth-based routing optimization method for wireless mesh networks
  • A bandwidth-based routing optimization method for wireless mesh networks
  • A bandwidth-based routing optimization method for wireless mesh networks

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Embodiment Construction

[0020] The present invention will be further explained below in conjunction with the accompanying drawings.

[0021] In the BATMAN-adv protocol, the calculation formula of the TQ value TQ(s,d) from the source node s to the destination node d is expressed as:

[0022]

[0023] Among them, TQ hop is the single-hop penalty value, through which the advantage of the short-hop path can be highlighted; TQ def is the default TQ value, generally 255; n is the number of nodes that the OGM packet passes through from s to d, and n-1 is the number of path hops; TQ(v i ,v i+1 ) for node v i and its neighbor node v i+1 TQ value between.

[0024] BATMAN-adv is a data link layer protocol that runs on the physical layer. Different physical layer protocols have different maximum data transmission rates. For example, the maximum transmission rate supported by IEEE 802.11n is 150Mbps (HT40,1*1), IEEE802 The maximum transmission rate supported by .11ac is 433Mbps (HT80, 1*1), and the maxim...

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Abstract

The invention discloses a bandwidth-based wireless MESH network routing optimization method, which introduces an interval parameter of an expected transmission rate, and when the actual transmission rate is outside the interval, it is necessary to take reward and punishment measures for the TQ value. In the same rate range, a dynamic adjustment switch is introduced to indicate whether to enable the dynamic adjustment function. At the same time, in order to easily cause routing jitter, the actual transmission rate is weighted and averaged. After obtaining the network bandwidth reward and punishment parameters, the improved link quality is obtained according to the network bandwidth reward and punishment parameters, and finally the improved TQ value from the source node to the target node is obtained. Compared with the original calculation model of the BATMAN-adv protocol, the present invention increases the judgment of network bandwidth, can effectively select high-performance transmission paths, and ensures communication quality.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a bandwidth-based wireless MESH network routing optimization method. Background technique [0002] Routing technology is one of the core issues of wireless MESH network research, and it is of great significance to improve the overall performance of the network. BATMAN-adv (Better Approach to Mobile Ad-hoc Networking Advanced) is a wireless MESH networking routing protocol that supports multiple network cards and multiple channels. The protocol maintains the update of the routing table by periodically broadcasting OGM (OriginatorMessage) packets. The receiving node uses a sliding window mechanism to record the sequence number of the OGM packet and calculates the TQ (Tx Quality) value through the following formula: TQ=EQ / RQ, where EQ refers to the number of OGM packets sent by the node to the neighbor node and forwarded back to the node by the neighbor node, and RQ refers t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/12H04W40/24H04W84/18
CPCH04W40/12H04W40/248H04W84/18
Inventor 祝超李康
Owner 江苏软仪科技集团股份有限公司