Power control method

A power control and power adjustment technology, applied in power management, advanced technology, electrical components, etc., can solve the problem of no power control method for wireless body area network, and achieve the effect of low transmission power

Inactive Publication Date: 2014-12-17
POTEVIO INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The "hibernation" and "sleep" mechanisms can save the power consumption of terminal nodes to a certain extent, but during the active time, no power control method suitable for WBAN has been proposed so far.

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Embodiment Construction

[0017] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] The core idea of ​​the present invention is: when performing power control on terminal nodes, make the receiving power of the central node greater than and as close as possible to the target receiving power, so that the transmission of terminal nodes can be made under the prerequisite of ensuring reliable information transmission. The power is as small as possible, so as to meet the needs of energy saving and human safety of terminal nodes in the wireless body area network.

[0019] figure 2 It is a schematic flow chart of Embodiment 1 of the present invention, such as figure 2 As shown, this embodiment mainly includes:

[0020] Step 201, the central node of the wireless body area network is based on the average value P of rece...

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Abstract

The invention discloses a power control method. The method includes that a center node of a wireless body area network updates an RSSI (received signal strength indicator) average value symbol 1 currently used for performing power control on a terminal node to obtain an updated RSSI average value symbol 2 according to an RSSI average value Pr of M currently-received consecutive data packets sent by the terminal node, wherein M is greater than or equal to 1; the center node compares the updated RSSI average value symbol 2 with a preset RSSI target value Ptarget to determine whether the terminal node needs to be subjected to power adjustment or not currently; when power adjustment is determined to be needed, the center node selects power adjustment step deltaP used for current power adjustment from a preset power adjustment step set according to that the minimum principles of a formula 1 and a formula 2 are satisfied by guarantee, and the terminal node is triggered to be subjected to power adjustment according to deltaP; the terminal node sends a next data packet by making use of adjusted transmitted power.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a power control method. Background technique [0002] With the rapid development of my country's urbanization process and the intensification of population aging, the contradiction between the continuous improvement of people's requirements for quality of life and the unsatisfied medical needs continues to intensify. With the development of wireless communication technology, the proposal of Wireless Body Area Network (WBAN) provides an effective solution for it. Using WBAN technology, the human body can be automatically collected by arranging corresponding sensor devices on the surface of the human body or in the body. ECG, EEG, EMG, body temperature, blood pressure, blood sugar, blood oxygen and other vital sign parameters realize real-time, convenient and all-weather monitoring of human vital signs, thus realizing ubiquitous health monitoring. Wireless body area net...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/02H04W52/36
CPCY02D30/70
Inventor 高伟东胡炜刘景文陈哲池连刚张欢鲁智林佩潘瑜
Owner POTEVIO INFORMATION TECH
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