Time-space domain multiplexing farmland wireless sensor network frequency spectrum interleaved access method

A wireless sensor and access method technology, applied in wireless communication, advanced technology, power management, etc., to achieve the effect of reducing power consumption, reducing channel competition and waiting time, and improving energy utilization efficiency

Active Publication Date: 2015-12-23
BEIJING RES CENT FOR INFORMATION TECH & AGRI
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  • Abstract
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is how to make full use of spectrum resources and ensure network performance while reducing channel monitoring and energy consumption during the access process of farmland wireless sensors

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  • Time-space domain multiplexing farmland wireless sensor network frequency spectrum interleaved access method
  • Time-space domain multiplexing farmland wireless sensor network frequency spectrum interleaved access method
  • Time-space domain multiplexing farmland wireless sensor network frequency spectrum interleaved access method

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Embodiment Construction

[0043] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.

[0044] A time-space domain multiplexed access method for farmland wireless sensor network spectrum interleaving, such as figure 1 As shown, the method includes the following steps:

[0045] S1. In the first round of clustering, the node wakes up at a predetermined time, and connects to the corresponding cluster, and then uploads the data; wherein, the uploaded data includes environmental data and node parameters, and the node data includes the information of the node and the corresponding cluster head distance;

[0046] S2. For each cluster, the cluster head determines the distance between it and each node in the cluster according to the data it receives from each node, and divides the nodes in the cluster ...

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Abstract

The present invention provides a time-space domain multiplexing farmland wireless sensor network frequency spectrum interleaved access method. The method of the present invention is characterized in that in a cluster, a data uploading time slice is distributed for each wireless sensor, namely a node, the nodes upload the data within the corresponding time slices and are located in the dormant states at the other time, thereby reducing the in-cluster channel competition, fully utilizing the frequency spectrum resources, and substantially reducing the power consumption. For each cluster, a cluster head carries out the different node time slice distribution according to the distances between the cluster head and the nodes in the cluster, and the different space domain occupation variation trends, and carries out the space multiplexing to the maximum extent, thereby reducing the mutual interference between the adjacent clusters, at the same time, fully utilizing the frequency spectrum resources. In allusion to the problem that the data uploading process encounters conflict, the method of the present invention designs a channel frequency spectrum conversion access method, enables the channel competition and the waiting time to be reduced and the energy utilization efficiency of the network communication to be improved, and guarantees the accurate, efficient and complete data uploading while prolonging a network life cycle.

Description

technical field [0001] The invention belongs to the technical field of spectrum access, and more specifically relates to a time-space domain multiplexed farmland wireless sensor network spectrum interleaving access method. Background technique [0002] Farmland wireless sensor network is one of the key technologies for monitoring and controlling the farmland environment in precision agriculture. According to the characteristics of large-scale farmland wireless sensor networks, how to efficiently implement network access and data transmission of sensing nodes is the key to system performance and the focus of research. For farmland wireless sensor networks, large network scale and high node density coexist. Since wireless communication has only one common wireless channel within a certain range, if a large number of network nodes access the network at the same time during the networking process, Channel conflicts can be severe. [0003] The current spectrum allocation method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/02H04W74/08
CPCH04W52/0216H04W74/0816H04W74/0825Y02D30/70
Inventor 赵春江郝鹏缪祎晟吴华瑞李飞飞
Owner BEIJING RES CENT FOR INFORMATION TECH & AGRI
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