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Double-layer multi-channel scheduling MAC protocol for coexistence of multiple wireless body area networks

A wireless body area network and multi-channel technology, applied in the field of communication, can solve the problems of ignoring data variability and different service quality, only considering the priority of transmission users, and starvation of low-priority nodes, so as to achieve priority response and reduce delay. , the effect of improving throughput

Inactive Publication Date: 2019-09-20
东北大学秦皇岛分校
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  • Application Information

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Problems solved by technology

High-priority nodes occupy most of the time slots and channel resources, resulting in starvation of low-priority nodes
During the competition process, the existing protocols only consider the transmission user priority, ignoring the data variability and different Quality of Service (QoS) requirements of different nodes.

Method used

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  • Double-layer multi-channel scheduling MAC protocol for coexistence of multiple wireless body area networks
  • Double-layer multi-channel scheduling MAC protocol for coexistence of multiple wireless body area networks
  • Double-layer multi-channel scheduling MAC protocol for coexistence of multiple wireless body area networks

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Embodiment Construction

[0043] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0044] First, the health data information received by the sensor is classified according to priority to meet the different performance requirements of different priority data, and high priority data will obtain higher channel selection rights. The present invention divides the medical data into three priorities of 5-7 to ensure the priority transmission of the medical data as emergency data. Different sensor nodes have different data arrival rates, thus requiring different numbers of time slots. In this protocol, the present invention only considers periodically collected data.

[0045] The present invention proposes a double-layer multi-channel scheduling MAC protocol for the coexistence of multiple wireless body area networks. The protocol adopts a two-layer scheduling method:

[0046] At the first layer, the data center assigns ch...

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Abstract

The invention discloses a double-layer multi-channel scheduling MAC (Media Access Control) protocol (Media Access Control) protocol for coexistence of a plurality of wireless body area networks (Wireless Area Networks, WBANs). A two-layer scheduling mode is adopted, the first layer uses a data center with stronger computing power to perform channel distribution; an interference matrix is established for each WBAN network, a new channel selection algorithm is adopted, different channels are allocated to WBANs which may generate interference, the interference is avoided, and time slots are adaptively allocated according to node service priorities and arrival rates in the WBANs in the second layer. According to the method, the performance of the original IEEE 802.15.6 protocol is improved by utilizing the advantages of high multi-channel transmission throughput and low delay, so that the network performance under the condition of dense WBAN network is improved.

Description

technical field [0001] The invention belongs to the technical field of communication, in particular to a double-layer multi-channel scheduling MAC protocol facing the coexistence of multiple wireless body area networks. Background technique [0002] Wireless Body Area Network (WBAN) is a kind of wireless network that is centered on the human body and maintains high reliability in a small area. It consists of sensor nodes implanted in the human body. With the popularity of wireless networks and wearable devices, WBAN technology has gradually developed. It is designed to be efficient and convenient for monitoring key health data around the clock. It also makes the application of WBAN in the field of health monitoring rapidly expand and deepen. Therefore, WBAN-led health monitoring technology (e-healthcare) has become an effective means to alleviate the contradiction between limited medical resources and the increasingly serious problem of aging. [0003] However, the Interne...

Claims

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Application Information

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IPC IPC(8): H04B17/382H04W72/04H04W72/08H04W72/10H04W72/12
CPCH04B17/382H04W72/0446H04W72/541H04W72/56H04W72/566
Inventor 袁晓铭潘骏韩佳新
Owner 东北大学秦皇岛分校
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