Prioritized data based Energy Efficient MAC protocol in Wireless Body Area Network
Anita Sahoo1, Tusharkanta Samal2, Ambarish Panda3, Keshar Kumari4

1Anita Sahoo, Department of CSE, College of Engineering Bhubaneswar, BPUT, Rourkela, India.
2TusharKanta Samal*, Department of CSE & A, Sambalpur University Institute of Technology, Sambalpur.
3Ambarish Panda, Department of EEE , Sambalpur University Institute of Technology, Sambalpur, India.
4Keshar Kumari , Department of CSE, College of Engineering Bhubaneswar, BPUT, Rourkela, India.
Manuscript received on February 10, 2020. | Revised Manuscript received on February 23, 2020. | Manuscript published on March 10, 2020. | PP: 64-69 | Volume-9 Issue-5, March 2020. | Retrieval Number: E2094039520/2020©BEIESP | DOI: 10.35940/ijitee.E2094.039520
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Abstract: Wireless Body Area Network (WBAN) is an exclusively designed Wireless Sensor Networks that used in today’s health-care system. The central challenge in WBAN is to transfer the medical data with limited energy and with high reliability. The IEEE 802.15.4 MAC Protocol is a standard model used to consume less energy by providing low data rate. This paper aimed to present a novel protocol PD-MAC, an enhanced version of IEEE 802.15.4 to achieve the above goal. The main objective of this protocol is to transmit the packets according to their priorities. It also improves the retransmission and packet drop process by introducing an additional slot to define Starvation Index in the super-frame of IEEE 802.15.4. A node has to start its transmission when the timer is set to zero. A node has to sense the channel status before transmission begins. The data are transmitted according to their priorities only when it senses the free channel. However if the channel is not free then retransmission of packet will be carried out and in each retransmission process the starvation index increments the priority of the packet. When the packet priority raises to high then it transmits the packet by considering it as high emergency packet. For energy efficiency a max limit is define to retransmit a data packet. This protocol has been simulated using Castalia 3.2 environment and the result validate that our proposed protocol provides better service in terms of least Packet Delay and lowest Energy Consumption to its counterparts. 
Keywords: WBAN,IEEE802.15.4 Standard, MAC, Starvation Index, Back-off period.
Scope of the Article: Wireless Access Technologies for IoT