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A data transmission method with high reliability and low delay in body area network

A data transmission method and low-latency technology, which is applied in the field of high-reliability and low-latency data transmission, can solve the problem of high total cost of nodes, and achieve the effects of lower average delivery probability, reduced waiting delay, and improved delay characteristics

Active Publication Date: 2020-03-10
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the above-mentioned deficiencies in the prior art, a data transmission method with high reliability and low delay in the body area network provided by the present invention solves the problem of high total cost of all nodes

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  • A data transmission method with high reliability and low delay in body area network
  • A data transmission method with high reliability and low delay in body area network
  • A data transmission method with high reliability and low delay in body area network

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Embodiment Construction

[0046] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0047] According to the experiments and demonstrations of the IEEE 802.15.6 working group, the Markov model can describe the channel characteristics well. The present invention adopts the two-state Markov process proposed in the existing research to model the channel between the sensor node and the local processing unit. The channel is divided into two states: good and bad. If the data frame can be successfully transmitted ...

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Abstract

The invention discloses a data transmission method with high reliability and low delay in a body area network, comprising the following steps: S1, calculating the node sampling time of each node according to the number of new and old data frames of the node and the channel model; S2, according to the current The allocated time slot segment and channel model calculate the length of the node data frame of each node; S3. At the node sampling time, the sampled data is encapsulated into a data frame according to the length of the node data frame, and the data frame is sent to the local processing unit. The scheme for determining the length of the data frame provided by the present invention consumes fewer time slots in the case of transmitting the same amount of business data, so the time slot utilization rate and average delivery probability are higher, and the advantage is more obvious when the channel condition is poor.

Description

technical field [0001] The invention relates to the technical field of body area network, in particular to a data transmission method with high reliability and low delay in the body area network. Background technique [0002] Wireless body area network refers to a wireless sensor network that is centered on the human body and consists of local processing units (smart terminals such as mobile phones and bracelets) and wireless sensors distributed on the surface of the human body or in the human body. Usually, the local processing unit and common sensor nodes perform data transmission directly through single-hop communication, forming a star network. The sensor nodes collect the information of various parts of the human body, and then transmit it to the local processing unit for processing and display or further transmit it to the remote processing center. [0003] Due to the particularity of WBAN itself, the research on its communication protocol is facing some challenges. ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B13/00H04B17/391H04W28/06H04W72/04
Inventor 孙罡王凯孙健虞红芳
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA