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

An access method and human body technology, applied in the direction of data exchange network, data exchange through path configuration, digital transmission system, etc., can solve the problems of not considering WBAN network characteristics and transmission environment, and not meeting WBAN application requirements, etc., to achieve Effects of reducing communication distance, avoiding information loss, and saving energy

Inactive Publication Date: 2009-03-25
SHANGHAI JIAO TONG UNIV
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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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  • Combined routing-multiple address access method based on wireless human body domain network
  • Combined routing-multiple address access method based on wireless human body domain network

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Embodiment Construction

[0028] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0029] Such as figure 1 As shown, it is a multi-hop network topology diagram in this embodiment, which is a medical application of wireless body area network, including three typical medical sensor nodes: ECG sensor, pulse sensor and blood pressure sensor. In the figure: node 1 It is a sink node, node 2 is an ECG sensor, node 3 is a pulse sensor, node 4 is a blood pressure sensor, and node 5 is a relay node. The sink node plays a leading role in the entire network and controls the data communication of the entire network. In order to avoid signal loss between the node...

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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 ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28H04L29/08H04L12/56H04L12/753
Inventor 刘艳丽刘静钱良易里安曲巍
Owner SHANGHAI JIAO TONG UNIV
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