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Radio senser network up and down isomeric routing method

A wireless sensor and sensor node technology, applied in data exchange networks, transmission systems, digital transmission systems, etc., can solve the problems of increased network overhead and delay, and reduced uplink routing efficiency, and achieves simple and easy implementation of algorithms and network overhead. Small, easy-to-achieve effects

Inactive Publication Date: 2007-03-21
NANTONG UNIVERSITY
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the routing methods currently applied to wireless sensor networks generally do not distinguish between uplink routing and downlink routing, and adopt the same strategy, which reduces the efficiency of uplink routing with the largest amount of data, and increases network overhead and delay.

Method used

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  • Radio senser network up and down isomeric routing method
  • Radio senser network up and down isomeric routing method
  • Radio senser network up and down isomeric routing method

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Embodiment Construction

[0066] The present invention will be further described below in conjunction with a specific embodiment and the accompanying drawings.

[0067] With reference to Figure 1, the processing procedure for establishing an uplink route in this embodiment is as follows:

[0068]S1-1 This node sends an uplink route request URREQ. The URREQ packet format is shown in Figure 7, which contains the hop count of this node.

[0069] S1-2 waits for the uplink route within 1 hop to reply URREP. Refer to Figure 8 for the format of the URREP packet, which includes the number of hops for sending URREQ nodes.

[0070] S1-3 whether URREP was received within a certain period of time. If received, go to S1-4; otherwise, go to S1-1.

[0071] When S1-4 receives the URREP, it judges whether the routing table of this node is empty. If it is empty, go to S1-5; otherwise, go to S1-6.

[0072] The S1-5 routing table is empty, and the parent node address and hop count are recorded in the upstream routing table.

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Abstract

A routing method of radio transducer network with heaterostructure in uplink and downlink includes sending uplink route request URREQ using gathering node as object by transducer node to set up uplink route, selecting node with minimum skit as father node to form path of uplink route after route reply URREP is received, setting up downlink route by utilizing broadcast mode and using path with direction opposite to uplink route as path of downlink route. In the method, different means is applied to set up path of uplink route and path of downlink route.

Description

Technical field [0001] The invention relates to a wireless sensor network, and more specifically to a wireless sensor network uplink and downlink heterogeneous routing method. Background technique [0002] Wireless sensor network is an intelligent autonomous measurement and control network system composed of a large number of small sensor nodes with communication and computing capabilities densely deployed in an unattended monitoring area, which can autonomously complete designated tasks according to the environment. The collection of perceptual information is one of the main tasks of wireless sensor networks. The modes of collecting information mainly include time-driven, event-driven, and query. When analyzing the information flow, it can be found that there are two main types of information transmission. One type is the information transmission from sensor nodes to the sink node, which is generally perceptual information; the other type is information transmission from the sin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L1/18H04L12/28H04L45/74
Inventor 徐晨孙强章国安包志华景为平
Owner NANTONG UNIVERSITY
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