CAMP: Congestion Avoidance and Mitigation Protocol for Wireless Body Area Networks

Abstract

Word population of old age people is growing very fast. This is a leading threat to current health care systems which trends to lesser the health facilities in proportional to the population. As reported by US Bureau of Census, the number of aged population is expected to be twice in 2025 from 380 (in 1990) [1]. The aged people mostly fall to different chronic health issues which require steady healthcare. These people needs to stick with hospitals, if not, they may experience the life risk [2]. Researchers affirm that most diseases can be overcome if they could caught earlier [3]. So, there an intense requirement of an intelligent health system which serve the purpose of timely diagnosis of the diseases'. To cope with these issues, scientists and technologists introduced Body Sensor Networks (BSNs) for health care systems [4]. BSN system can be deployed within a hospital or at the patient's home. These networks are made up of minimized bio-medical sensors (BMS) and capable of gathering information such as blood pressure, temperate, ECG from the human body and sending the information to the medical server[5]. Fig. 1 illustrate the types of BMS which can be used in BSN. Typically, medical server is placed at the healthcare facility which stores and analyze the information received form these BMS'. The server then generates alerts to the concerned health care experts and immediate caretakers if the found any abnormality. The system architecture of BSN is illustrated in Fig. 2. The BSN directly related to human body is known as intra-WBAN in which BMS are implanted under the human skin or wearable over the human skin or on clothes. These BMS' are controlled by Body Coordinator (BC) which collects and forward data to the outside BSN. BC has high computational, storage and power resources as compared to BMSs[6].

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