Hybrid MAC Protocol for Wireless Sensor Networks with Emergency Response

  Abhilasha P.Kumar,  Mallanagouda Patil

Emergency Response MAC (ER-MAC) is a hybrid MAC protocol that has been designed for networks which is wireless in nature to monitor the emergency situations. The mode switching during emergency situations is done to handle heavy traffic by changing the topology (to reduce packet loss), marking the packets with various priorities and guaranteeing fairness. The ER-MAC protocol combines both Carrier Sense Multiple Access/Collision Avoidance (CSMA/CA) and Time Division Multiple Access (TDMA) for providing flexibility for acclimatizing with traffic and topology changes. As TDMA is used, nodes wake up only at the beginning of their allotted slots. When an emergency situation occurs then the nodes change their MAC behavior allowing contention in TDMA slots. Because of contention, high data delivery ratio and lesser delay are achieved. The ER-MAC protocol is has a unique property which gives precedence to the nodes with emergency data. The ER-MAC protocol will be simulated using NS2. The simulation results show that ER-MAC protocol is scalable and performs better than the existing protocol, the Z-MAC (Zebra-MAC) protocol.

Keywords- Wireless sensor networks, Media access control (MAC), Emergency Response, Time Division Multiple Access (TDMA), and Carrier Sense Multiple Access (CSMA).

Unique Identification Number - IJEDR1503058
Page Number(s) -
Pubished in - Volume 3 | Issue 3 | August 2015
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)

  Abhilasha P.Kumar,  Mallanagouda Patil,   "Hybrid MAC Protocol for Wireless Sensor Networks with Emergency Response", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.3, Issue 3, pp., August 2015, Available at :http://www.ijedr.org/papers/IJEDR1503058.pdf