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Wireless body area network MAC protocol based on multiple channels, communication method and system

A wireless body area network and multi-channel technology, applied in wireless network protocol, wireless communication, transmission system, etc., can solve the problem of increasing the delay time of key data packets, so as to improve network delay, relieve channel pressure, and improve utilization rate Effect

Active Publication Date: 2019-10-08
HENAN UNIV OF SCI & TECH
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Problems solved by technology

However, when the number of sensor nodes is large, fixed slot allocation may increase the delay time of critical data packets

Method used

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  • Wireless body area network MAC protocol based on multiple channels, communication method and system
  • Wireless body area network MAC protocol based on multiple channels, communication method and system
  • Wireless body area network MAC protocol based on multiple channels, communication method and system

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Embodiment Construction

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0051] see figure 1 , based on the multi-channel wireless body area network MAC protocol, set the superframe based on the beacon mode with beacon period, the superframe includes the active period and the dormant period in sequence, in the active period, the beacon stage and the initial channel allocation stage are sequentially carried out , channel selection phase and data transmission phase.

[0052] In the beacon stage, the coordinator completes the network...

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Abstract

Based on a wireless body area network MAC protocol based on multiple channels, a superframe comprises an active period and a dormant period which are sequentially carried out, and a beacon stage, an initial channel distribution stage, a channel selection stage and a data transmission stage are sequentially carried out in the active period; in the beacon stage, the coordinator completes network synchronization with the wireless sensor nodes; in the initial channel distribution stage, the coordinator classifies all available channels into a management channel and a plurality of data channels, the coordinator distributes one data channel for each wireless sensor node as an initial channel, and the initial channels of different wireless sensor nodes are mutually independent or mutually overlapped; in the channel selection stage, the wireless sensor node selects one data channel for data transmission based on the initial channel state and the data priority; and in the data transmission stage, the wireless sensor node performs data transmission through the selected data channel. The performance of the network in the aspects of network delay, average energy consumption and normalized throughput is remarkably improved.

Description

technical field [0001] The invention relates to the field of wireless body area network, in particular to a multi-channel-based wireless body area network MAC protocol, a communication method and a system. Background technique [0002] With the intensification of the global aging phenomenon and the rapid development of science and technology, people's living standards have been greatly improved, and people pay more attention to their own health problems. The demand for medical services has increased significantly, and telemedicine has become more and more popular. Wireless body area network collects and processes human physiological data through some sensors placed on the surface or inside of the human body to monitor human body conditions. It has great application value for telemedicine, and is also widely used in military, entertainment, sports, smart home, etc. . [0003] Energy consumption and delay have always been important performance indicators in the design of wire...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W72/10H04W80/02H04L29/06H04L29/08H04B17/382
CPCH04W80/02H04L69/03H04L69/324H04B17/382H04W72/53H04W72/56Y02D30/70
Inventor 郑国强袁德颖郑奕薇王宁宁曲雅婷王欣彤马华红冀保峰吴红海李济顺薛玉君
Owner HENAN UNIV OF SCI & TECH
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