Research On Routing And Security Protocol Based On IEEE 802.15.6 In Wireless Body Area Network

In Wireless Body Area Networks(WBAN),energy consumption and security have been the mainstream of research.IEEE 802.15.6 redefines physical and MAC layer to provide WBAN with low-power,short-range communication services.It proposes a star topology with a maximum of 2-Hop.but the protocol does not propose a specific forwarding node selection strategy.At the same time,considering the long-term working time of WBAN,the software reprogramming requirements of node are inevitable.For some internal nodes,it is necessary to update the software through Over-The-Air because of the nodes are difficult to access.It requires a security protocol to secure the reprogramming process.The IEEE 802.15.6 protocol does not specify the security issues of nodes,especially internal node reprogramming processes.The main research contents of this paper are as follows(1)An energy efficient forwarding node selection strategy OOR based on IEEE 802.15.6 protocol is proposed.The forwarding node can calculate the maximum forwarding time that can be provided according to the data packet frequency and the data packet size of the terminal node,the terminal node selects the node which can provide the largest forwarding time as the forwarding node,and can automatically select a new one when time exhaustion.Simulations show that the ORR protocol has a 10%increase in network lifetime,a 4%increase in total network throughput,and an 8%increase in terminal node throughput over traditional protocols.(2)A reprogramming security protocol for internal nodes under IEEE 802.15.6 protocol is proposed.The master key MK and the session key PTK based on the IEEE 802.15.6 protocol encrypt the data and summary information to ensure the security of the reprogramming process.Security analysis shows that the protocol can effectively resist mainstream attacks including camouflage attacks,replay attacks,and man-in-the-middle attacks.