Performance Analysis of Immense Preference Data Forwarding (IPDF) Scheme incorporated with Constructive Time Slot Allocation in IEEE 802.15.4 for Wireless Body Area Networks

A large time delay during emergency data transfer in WBAN is a challenging task since it involves transmission of time sensitive crucial information to the receiver for immediate treatment of the patient. This paper aims in providing an efficient transmission of Immense Preference Data (IPD) to the respective end user with minimal delay and energy consumption. IEEE 802.15.4 MAC superframe was altered within permitted standards and IPDF Routing Scheme was designed and implemented in which, time slots were efficiently allocated according to data type. Guaranteed Time Slots (GTS) in Contention Free Period (CFP) was allocated to IPD of the slot's possessor and the non-possessor node at t0 and t1 respectively. This provides an immediate and guaranteed transfer of data without any further delay and unnecessary waiting time for channel contention at Contention Access Period (CAP) was also reduced, so as to add to the minimization of power consumption and latency. CAP was further divided into two phases for transmitting Minor Preference Data (MPD) of possessor and non-possessor which minimizes collision of data packets that further decreases delay and power consumption of MPD. Simulations and performance analysis of IPDF scheme were carried out in NS2. Delay and power consumption minimization and PDR and throughput maximization for IPD in comparison to IEEE 802.15.4 MAC standard and PA-MAC was achieved.