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MAC layer tie slot allocation method capable of ensuring QoS in body area network

A technology of time slot allocation and body area network, applied in electrical components, wireless communication, etc., can solve the problem of low network utility value

Active Publication Date: 2019-02-01
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0008] Aiming at the above-mentioned deficiencies in the prior art, a method for allocating time slots at the MAC layer with guaranteed QoS in the body area network provided by the present invention solves the problem that the utility value of the network as a whole is not high

Method used

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  • MAC layer tie slot allocation method capable of ensuring QoS in body area network
  • MAC layer tie slot allocation method capable of ensuring QoS in body area network
  • MAC layer tie slot allocation method capable of ensuring QoS in body area network

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Embodiment Construction

[0085] 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.

[0086] Such as figure 1 As shown, a MAC layer time slot allocation method that guarantees QoS in a body area network is characterized in that, comprising the following steps:

[0087] S1. Calculate the node priority through the key index factor, sampling rate factor, timeout factor and remaining energy factor of the sensor node. The calculation formula of the node priority is:

[0088]

[0089] In the above formula, ω ...

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Abstract

The invention discloses an MAC layer time slot allocation method capable of ensuring QoS in a body area network. In the method, delay cost and energy cost during a node transmission data process are considered, a node utility function is innovatively designed through combining a node priority with a transmission delivery probability, an optimization problem is mathematically modeled according to the definition of the utility function, and thus a time slot allocation scheme with relatively low complexity and relatively good performance is provided. Therefore, according to the time slot allocation scheme provided by the invention, the comprehensive utility of the network can be improved.

Description

technical field [0001] The invention relates to the technical field of wireless body area networks, in particular to a method for allocating time slots at the MAC layer for ensuring QoS 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 so...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W72/08
CPCH04W72/0446H04W72/54
Inventor 孙罡王凯孙健虞红芳
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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