Reliable delay sensitive loss recovery protocol for critical health data transmission system

Wireless Body Area Network (WBAN) is a special kind of sensor network deployed with low power, intelligent sensors, which are placed on the human body to collect human´s vital signs, while monitoring body functions and the surrounding environment. Many applications of WBAN demand Reliable communication service; since the majority of these applications are responsible for handling time-critical data. Such an application area is a healthcare system, which offers flexibility and mobility to patients through the internet. Due to the long propagation delay and high loss rate in the WBAN, it is very tough to provide reliable data transfer for time-critical applications. In this paper, we analyze all these issues and design an efficient Reliable Delay Sensitive Loss Recovery protocol (RDSLR) for handling critical and non-critical data in WBAN. We emphasize on arrival of heterogeneous data (i.e. traffic flow) within the expected time for the analysis of actual health conditions of a patient. Reliable and loss-free data transmission requirements in a healthcare system desire arrival of data within the predefined critical time interval. Thereby, we enhance the loss recovery and delay module considering critical time parameters as an account. We evaluate the performance of the proposed approach by taking packet loss rate, elapse time, loss error time, and reliability time as key metrics.