Abstract
Medical Body Area Networks or MBANs are gaining popularity in healthcare circles because of the convenience they provide to patients and caregivers and assist in chronic disease management. In order to provide prompt and efficient care to the patient, MBANs need to be designed in a way so that stringent QoS requirements are fulfilled. This is essential as MBANs carry vital sign data and any loss or delay in transmission can be fatal and life-threatening. Current research focus is to develop mechanisms and protocols that are focused to reduce delays, conserve energy and improve QoS parameters such as Reliability. An important aspect of MBANs is to give special attention to emergency traffic which is carried when a serious event is triggered such as heartbeat going above threshold or ECG status showing cardiac issues. Thus, the provision of QoS is a challenging task and must be addressed at various layers of the network. There are various techniques to cater to QoS requirements and one way of improving QoS is to reduce the packet loss so that transmission is reliable which is necessary for life-saving data. Research contributions have addressed this mostly at the MAC layer/network layer and through queuing techniques. However, none of these mechanisms do not consider the wireless channel dynamics and the impact of MAC layer and physical layer parameters together while focusing on Emergency data handling within an Intra-WBAN. In this paper, we have proposed a QoS aware Cross layered solution based on IEEE 802.15.6 that is adaptive, Relay based, multi metric and changes the routing scheme based on traffic type. We have selected AODV protocol over OLSR, DSR and other protocols because of its design simplicity. In this paper, we have reviewed the existing literature on WBAN Reliability enhancements’ techniques followed by a review of QoS aware enhancements for AODV. Our proposed protocol is designed and simulated for Intra-WBAN communication and is efficient in terms of end-to-end reliability.
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