Abstract
Increased life expectancy and rising medical expenses impose big issues for proper health care and monitoring. Wireless Body Area Networks (WBANs), a group of small sensor nodes attached inside, on or around the human body, were introduced to meet this requirement. On body topology disconnections occur due to ultra short range radio links, unpredictable RF attenuation and human postural body movements. WBANs have stringent requirements in terms of delay, power consumption, reliability and so on and characteristics and dynamics of body should be taken care to achieve these. These impose tighter restrictions on the routing protocols in WBANs. This paper provides a comparison of five of the routing protocols, opportunistic, PRPLC, DVRPLC, SIMPLE and ATTEMPT proposed for WBANs. The comparison is performed at 403 MHz (within ISM band) and with implanted node scenario. The protocols are simulated and performance compared in terms of network lifetime, propagation delay and packet delivery ratio (PDR).
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