A wireless body area network acquisition data transmission method with controlled packet loss rate

Abstract

The invention discloses a method for transmitting acquired data in wireless body area network (BAN) with a controllable packet loss rate. The wireless BAN comprises n sensor nodes for acquiring data, relay nodes for receiving and encoding acquired data, and a base station for receiving encoded data. The method comprises steps of: priority data in acquired data of the sensor nodes are set in a generation; each relay node takes charge of a part of the n sensor nodes and is arranged in a generation and at least takes charge of one sensor node for acquiring the priority data; a base station detects a packet error rate of the current BAN and feeds the packet error rate to the relay nodes; the relay nodes give different encoding strategies to transmit encoded data to the base station in the case of different packet error rates; and the base station computes and decodes the acquired data to obtain required data or original data. The method achieves little data transmission distortion, a low packet loss rate, and a good error recovery capability for the wireless BAN.

Description

technical field [0001] The present invention relates to the field of wireless communication, more specifically, the present invention relates to a wireless body area network acquisition data transmission method for controlling the packet loss rate of the data received by the relay node according to the priority and the network packet error rate. Background technique [0002] With the continuous development and progress of medical technology, the average life expectancy of human beings continues to increase, followed by the increase of the elderly population in society, and the proportion of the elderly in the population structure is increasing, but according to the traditional way of treating the elderly Personal care is no longer enough, so telemedicine technology is an important way to monitor the health of the elderly in the future, and it is also an important development direction for future medical development. Wireless body area network is an emerging technology in rec...

AI Technical Summary

Problems solved by technology

Both ARC and FEC error recovery mechanisms are difficult to meet adaptive network requirements, resulting in waste of network resources

Marinkovic proposed the use of network coding as an error recovery mechanism for wireless body area networks, but this mechanism has no priority division, each data packet may have errors and distortions, or important data is lost during transmission and cannot be adaptive in network and application environment

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