Independence self-adapting regulation method for sensor node dutyfactor based on IEEE802.15.4

An adaptive adjustment, sensor node technology, applied in transmission systems, electrical components, data exchange through path configuration, etc., can solve the problem of reducing the duty cycle of no-flow nodes, shorten the beacon interval period, and ensure delay. performance, the effect of reducing the reception frequency

Active Publication Date: 2009-05-27
富士通研究开发中心有限公司 +1
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However, this method retains many characteristics of IEEE 802.15.4, and the network coordinator still uniformly adjusts the same BO of all nodes in the network (that is, the same beacon interval period), and the coordin

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  • Independence self-adapting regulation method for sensor node dutyfactor based on IEEE802.15.4
  • Independence self-adapting regulation method for sensor node dutyfactor based on IEEE802.15.4
  • Independence self-adapting regulation method for sensor node dutyfactor based on IEEE802.15.4

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[0040] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0041] For a typical wireless sensor network application, since there are many nodes in the entire network coverage area and the communication range of a single node is limited, the clustering algorithm is used to cluster the local nodes in the network so that the entire network forms a clustered tree topology. It is a more effective implementation method. Such as figure 1 As shown, each PAN subnet is managed by a network coordinator as a cluster head as a relatively independent node cluster, and the data flow between each cluster is transmitted by each cluster head, and finally by a first network The coordinator controls the operation of the entire network.

[0042] In order to focus on the verification of the performance of the method of the present invention without involving other specific technologies, such as ...

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Abstract

The invention relates to an independent self-adaptive adjusting method for duty ratio of a sensor node based on an IEEE 802.15.4 protocol. When the flow rate of the node is less, the dormancy time of the node is prolonged to further reduce power consumption of the node; simultaneously, the receiving frequency of a beacon frame of the node is reduced to further lessen corresponding receive power consumption of the node; when the flow rate of the node is larger, the dormancy time of the node is independently shortened to ensure the performance of end-to-end time delay of the node; and simultaneously, the number of the node in a competitive channel at the same time is reduced to further improve the thuoughput performance. The node simultaneously adopts a high-efficiency energy dormancy mechanism so that the node carries out dormancy ahead of an active phase within a cycle, thereby further saving power consumption of the node. The method ensures high-efficiency energy of the node so that the network power consumption and the end-to-end time delay obtain good balance under different network loading conditions and a network coordinator independently and simultaneously carries out self-adaptive adjustment on the duty ratio of each node and an alternate cycle of a beaconing according to data frame sending queue information received from each node.

Description

technical field [0001] The invention relates to an IEEE 802.15.4 protocol widely used in wireless sensor networks, a node duty ratio self-adaptive adjustment method and an energy-efficient dormancy mechanism based on the protocol, and belongs to the technical field of wireless network communication. Background technique [0002] Wireless sensor networks (WSNs) are a multi-hop network system formed by a large number of cheap micro sensor nodes deployed in the monitoring area through wireless self-organization. Object's information and sent to observers. [0003] IEEE 802.15.4 is a set of network standards originally developed by the Institute of Electrical and Electronics Engineers for Low-Rate Wireless Personal Area Networks (LR-WPANs). Due to the energy efficiency and robustness of the physical layer (PHY) and the flexibility of the medium access control sublayer (MAC), it is very suitable for low-speed, low-power, low-cost, and low-complexity wireless sensor network appli...

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Application Information

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IPC IPC(8): H04L29/08H04L29/06H04L12/28
Inventor 何晨高博蒋铃鸽田军林强
Owner 富士通研究开发中心有限公司
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