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Single antenna multichannel cognitive wireless sensor network route control method

A sensor network and cognitive wireless technology, applied in the field of single-antenna multi-channel cognitive wireless sensor network routing control, can solve problems such as optimization of transmission path, increase of transmission delay, and reduction of transmission delay, etc., so as to avoid repetition The effect of negotiating, reducing protocol overhead, and reducing the number of channel switching

Inactive Publication Date: 2013-05-15
SHANGHAI JIAO TONG UNIV +1
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AI Technical Summary

Problems solved by technology

These protocols generally only focus on the internal communication quality of the network (such as data collisions, etc.), and usually do not consider the influence of external factors on routing selection under the coexistence of multiple devices; secondly, routes are generated in a single-hop manner, without considering the source node to destination node Optimization of the entire transmission path; for the on-demand route generation method, each node needs to re-find the path after receiving the data, which increases the transmission delay of the system to a certain extent; moreover, usually to reduce the energy consumption of nodes is the main goal, which is very important for WSNs with limited node energy
However, low energy consumption of nodes is not the only performance index of WSN. For some application fields with high real-time requirements (such as network control system, multimedia WSN, etc.), reducing transmission delay is undoubtedly a problem that cannot be ignored.

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  • Single antenna multichannel cognitive wireless sensor network route control method
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Embodiment Construction

[0047] The following examples illustrate the implementation of the present invention, providing detailed implementation and specific operation process, but the scope of protection of the present invention is not limited to the following examples.

[0048] In the example, it is compared with the WOR (Weighted on-demand routing) routing algorithm, which is Wei Guo et al. in the document "A Weighted On-Demand Routing Algorithm in Multichannel Multihop Wireless Network, IEEE International Conference on Communication, Circuits and Systems and A routing algorithm proposed in West Sino Expositions, Vol.1, pp.424-427, 2002", which uses the weighted sum of the channel capacity within the single-hop range and the transceiver power between nodes as the discriminant number for selecting routes and channels. Each relay node independently selects its successor node and data transmission channel according to the discriminant number.

[0049] In this embodiment, a network scenario containing ...

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Abstract

The invention provides a single antenna multichannel cognitive wireless sensor network route control method which is cross-layer optimized and aims at a cognitive wireless sensor network with single collecting nodes, single antenna and multichannel. According to the single antenna multichannel cognitive wireless sensor network route control method, route characteristic number concepts are defined, a multichannel half-holding phone mechanism is designed; a plurality of local routes are generated by utilizing channel priority of data transmission full paths and weighting and minimum of consumption of node collecting and sending as optimization indicators, the routes are saved in a route table of each node according to a combination manner of a channel or a node, the whole network route optimization is achieved by distributed routing algorithm, protocol pay expenses are reduced, network robustness is improved, and utilizing of opportunistic spectrum resources is convenient. Channel switching in data transmission is reduced due to application of the multichannel half-holding phone mechanism. According to testing results, quality of service (QoS) is supported by a routing protocol of the single antenna multichannel cognitive wireless sensor network route control method under the condition that the opportunistic spectrum resources and limiting of node consumption are utilized. Under the condition that node consumption is limited, communication delay and packet loss rate are reduced.

Description

Technical field: [0001] The invention relates to a routing protocol for data communication of a cognitive wireless sensor network, which belongs to the field of information technology, and in particular relates to a single-antenna multi-channel cognitive wireless sensor network routing control method. Background technique: [0002] Wireless sensor networks (Wireless Sensor Networks, WSN) and a large number of other wireless devices or systems share unlicensed frequency bands "unfettered", and conflict with each other according to a certain probability when using frequency resources, resulting in data transmission failure. To solve this problem, cognitive wireless sensor networks (Cognitive Radio Sensor Networks, CRSN) that can capture and utilize opportunistic frequency resources have received attention and research, and designing suitable routing algorithms is an important part of it. [0003] Regarding cognitive radio networks, there are currently many routing protocols, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/02H04W40/10H04W40/12H04W40/24
CPCY02B60/50Y02D30/70
Inventor 田骥吴呈瑜蒋铃鸽何晨田军吕超
Owner SHANGHAI JIAO TONG UNIV
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