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A self-adaptive adjustment method for wireless body area network power and rate

An adaptive adjustment, wireless body area network technology, applied in wireless communication, power management, network traffic/resource management, etc., can solve the problem of not fully considering the heterogeneity of each sensor node, achieve accurate quality and simple calculation immediate effect

Active Publication Date: 2020-04-28
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

[0004] Scholars at home and abroad have proposed many power control or rate control methods to solve this problem, but these control methods do not fully consider the heterogeneity of each sensor node, how to choose a control strategy according to the different requirements of each node to achieve power control and rate dynamic control is still a problem to be solved

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  • A self-adaptive adjustment method for wireless body area network power and rate
  • A self-adaptive adjustment method for wireless body area network power and rate
  • A self-adaptive adjustment method for wireless body area network power and rate

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Embodiment

[0045] Such as figure 1 As shown, a wireless body area network power and rate adaptive adjustment method, including the following steps:

[0046] Step 1 101 determines the network topology and access mechanism of the wireless body area network, the network topology includes source nodes and central nodes;

[0047] In the IEEE802.15.6 standard, the network topology of the wireless body area network is specified as a single-hop star topology and a multi-hop tree topology. Both topologies have their own advantages and disadvantages. The research on the control method mainly adopts the star topology, which has the advantages of simple structure and small node transmission delay, so the star topology is adopted in this embodiment. figure 2 Shown is a typical star topology of a wireless body area network. The wireless body area network of star topology is composed of some wireless sensor source nodes attached to the surface of the human body or implanted in the human body and int...

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Abstract

The invention discloses an adaptive adjustment method of the power and rate of Wireless Body Area Network (WBAN). The network topological structure and the access mechanism are confirmed. The network topological structure includes source nodes and a center node. The source nodes are classified according to their characteristics and the result is stored into the center node. The received data of a certain source node is decoded by the center node. The weighted average of the bit error rates of receiving in N times in succession is calculated. The type of the source node received is confirmed by the center node. The weighted average calculated is compared with the preset threshold corresponding to the node to determine whether to adjust the power or rate of the present source node. A corresponding strategy is taken according to the type of the present node. The result of adjustment is fed back to the present source node by the center node. The next data transmission is carried out by the source node according to the result of the adjustment. In the invention, the energy consumption of the sensor nodes is reduced to the greatest extent while the reliability of communication is satisfied.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to an adaptive adjustment method for power and rate of a wireless body area network. Background technique [0002] Wireless Body Area Network (WBAN) is the application of Wireless Sensor Network (WSN) in biomedical and other fields. The wireless body area network is a wireless network that is centered on the human body and composed of some sensors attached to the surface of the body or implanted in the body. Wireless body area network is an integral part of the Internet of Things. It has great application significance and demand in medical care, disease monitoring and prevention, and has gradually become the focus of attention in medical, commercial and other fields. [0003] The wireless body area network has the following characteristics: the channel condition changes rapidly, which is caused by the random movement of the human body; the power of the sensor is very...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/22H04W52/14
CPCH04W28/22H04W52/14
Inventor 王一歌田远
Owner SOUTH CHINA UNIV OF TECH
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