Channel resource scheduling strategy based on event response

A channel resource and scheduling strategy technology, applied in the direction of electrical components, wireless communication, transmission path separation devices, etc., can solve the problem that single-channel communication cannot provide reliable, efficient and real-time network communication, aggravate network delay and channel utilization, Channel negotiation efficiency is low and other issues, to improve channel negotiation efficiency, improve network real-time performance and reliability, and alleviate network delay problems

Active Publication Date: 2017-11-07
YANSHAN UNIV
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Problems solved by technology

If other channels are idle at this time, spectrum resources will be wasted virtually.
At the same time, the low efficiency of channel negotiation in a single-channel network exacerbates the problems of network delay and low channel utilization
In addition, when the channel used by the network is severely interfered by the outside world, the entire network will face the danger of paralysis, and single-channel communication cannot provide reliable, efficient and real-time network communication

Method used

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  • Channel resource scheduling strategy based on event response
  • Channel resource scheduling strategy based on event response
  • Channel resource scheduling strategy based on event response

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Embodiment Construction

[0042]The present invention will be further described below in conjunction with accompanying drawing:

[0043] In the strategy, network nodes are divided into central node CN (Center Node) and ordinary nodes; all nodes in the network are within one hop range, that is, all nodes can communicate directly; the central node is equipped with three radio frequency modules and three Each radio frequency module fixedly uses the corresponding three channels with the largest spectrum interval; the common node is equipped with two radio frequency modules, and each radio frequency module is dynamically switched among the three channels of the three radio frequency modules of the central node, and is selected among the three channels One channel is used as a control channel; when an ordinary node needs to transmit data, it needs to exchange RTS frames and CTS frames with the central node through the control channel to negotiate the channel and time occupied by the ordinary node to send or r...

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Abstract

The invention discloses a channel resource scheduling strategy based on event response, which uses a compound module of which multiple radio frequency units cooperatively work as a platform, is on the basis of time division multiplexing and frequency division multiplexing technologies, distributes channel resources in a centralized mode and flexibly uses and control channels. According to the channel resource scheduling strategy disclosed by the invention, the channel distributing process is simplified, channel negotiation efficiency is improved, the channel resources are flexibly scheduled, the broadcast problem in a multi-channel network is also solved when a channel resource utilization rate is sufficiently improved, simultaneous multi-channel parallel data transmission of nodes is implemented, and communication efficiency is greatly improved; and the channel resource scheduling strategy disclosed by the invention is low in complexity and easy to implement.

Description

technical field [0001] The invention relates to a channel resource scheduling strategy in the technical field of wireless network communication, in particular to a channel resource scheduling strategy based on event response. Background technique [0002] Nodes in single-channel wireless sensor networks use a single frequency for communication, resulting in severe communication competition, serious mutual interference, and large network delays. When an event is triggered in a wireless sensor network, the relevant nodes respond to the event. Nodes need to check whether the channel is available before exchanging data. If the channel is already occupied, it will be delayed for a period of time to check again, and then communicate and exchange data after the channel is free. If there are multiple nodes that need to communicate at the same time, the overall delay time of the network will increase dramatically. At this time, if other channels are in an idle state, spectrum resou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04W72/00H04W72/04H04W72/12H04W74/08
CPCH04L5/0005H04W72/0446H04W74/0808H04W72/30H04W72/54H04W72/20
Inventor 袁亚洲刘静仁关新平刘志新马锴
Owner YANSHAN UNIV
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