Combined routing-multiple address access method based on wireless human body domain network

Abstract

The invention relates to a joint route-multiple multiple access method based on a wireless body area network (WBAN), belonging to the field of WBAN. With respect to the WBAN composed of sensor nodes for collecting different data services, through the method, a multi-hop tree topology is constructed so as to realize multiple access and gather the data collected by the nodes to a central control node along a the tree structure route at the same time. In case of a data demand, the central control node sends a command packet to sub-nodes which construct the tree topology in the carrier sense multiple access (CSMA) manner. The nodes on each branch of the tree topology are nodes for collecting the same data service. With respect to the nodes far away from a sink node, a replay node is introduced in a proper position on the trunk of the body to reduce the communication distance while avoiding the data loss at nodes positioned on both sides of limbs due to movement of the limbs. The method introduces the relay node and arranges the limbs nodes with mobility model, so as to save energy and improve data transmission reliability at the same time.

Description

technical field [0001] The invention relates to a method in the field of wireless body area network, in particular to a joint routing-multiple access method based on wireless body area network. Background technique [0002] In recent years, the wireless body area network (WBAN) formed by placing various medical sensors and wireless portable devices on the human body has broad application prospects in medical, entertainment, aviation and military fields. Due to the existence of the human body, WBAN has a smaller transmission distance, requires lower transmission power and higher data reliability guarantee. In the wireless body area network, the human body, as the carrier of various sensor nodes, affects the transmission environment of the entire network. The current research on wireless body area network shows that in the frequency band below 800MHz, the communication between sensor nodes is mainly based on the internal transmission of the human body, while the transmission ...

AI Technical Summary

Problems solved by technology

The disadvantage of this technology is that the MAC and routing technology based on the tree-shaped multi-hop network topology regards all nodes as nodes that collect the same data service, and does not take into account the special network characteristics and transmission environment of WBAN, which is not in line with the actual situation. WBAN and its application requirements

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