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Greedy multi-path routing method of wireless multimedia sensor network based on QoS (Quality of Service)

A multimedia sensor and multi-path technology, applied in network topology, wireless communication, advanced technology, etc., can solve the problem of not being able to provide the overall situation, and achieve the effects of avoiding routing holes, improving utilization, and extending life

Active Publication Date: 2011-06-01
宏安集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Many studies have shown that the minimum number of hops and the minimum cost cannot provide a global optimal guarantee, so it is necessary to improve the mechanism for selecting the next hop node based on the minimum hops and minimum cost

Method used

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  • Greedy multi-path routing method of wireless multimedia sensor network based on QoS (Quality of Service)
  • Greedy multi-path routing method of wireless multimedia sensor network based on QoS (Quality of Service)
  • Greedy multi-path routing method of wireless multimedia sensor network based on QoS (Quality of Service)

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0034] Such as figure 1 As shown, the establishment process of the multi-path routing of the present invention is illustrated by the flow chart of the QoS-based greedy multi-path routing method of the wireless multimedia sensor network of the present invention. When the source node has data to send, the source node first checks whether there is an available one-hop neighbor node. If there is no available one-hop neighbor node, the current node sends a non-acknowledgment frame; if it exists, judge whether the base station is within one hop range of the current node, and if it is within one hop range, establish a path directly; otherwise, judge whether the base station is within the current node ...

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Abstract

The invention relates to a greedy multi-path routing method of a wireless multimedia sensor network based on QoS (Quality of Service), which comprises the steps of: (1) adjusting the status of a network node per se by a sleep dispatching method of duty ratio by the network node; and (2) discovering a plurality of node-disjoint shortest paths from a source node to a base station by means of a greedy strategy. The greedy strategy is that the current node selects a node nearest to the base station from one and two hops of neighbor nodes as a forwarding node. The plurality of node-disjoint shortest paths from the source node to the base station are established by utilizing one and two hops of neighbor node information in the invention, immediate and reliable transmission of the multimedia information is ensured and data transmission failure caused by routing empty and individual path failure is avoided. Connectivity of the whole network is controlled by the sleep dispatching mechanism of the duty ratio simultaneously, so that energy of the node for transmitting data is ensured, unnecessary energy consumption of idle monitoring is reduced, therefore, the node utilization is maximized, the utilization ratio of the network resources is improved and the service life of the network is prolonged.

Description

technical field [0001] The invention belongs to the field of wireless multimedia sensor networks, in particular to a greedy multipath routing method for wireless multimedia sensor networks based on QoS (Quality of Service). The method provides an efficient and timely data transmission route for the streaming media information of the wireless multimedia sensor network, and can effectively avoid routing holes. Background technique [0002] Wireless multimedia sensor networks (wireless multimedia sensor networks, WMSNs) is a new type of sensor network developed on the basis of wireless sensor networks (wireless sensor networks, WSNs). The wireless multimedia sensor network collects audio, video and image data of the surrounding environment through sensor nodes equipped with simple devices such as low-cost cameras and microphones. After data compression and fusion, they are transmitted to the base station through the sensor network to achieve a comprehensive and effective enviro...

Claims

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Application Information

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IPC IPC(8): H04W40/02H04W40/22H04W84/18
CPCY02B60/50Y02D30/70
Inventor 韩光洁董玉慧朱川张娜江金芳郭惠刘同庆
Owner 宏安集团有限公司
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