Enhancing Home Health Care System Using Body Area Network & Group Key

Abstract
Body Area Networks are the networks of wireless medical sensors, deployed on a person for enabling pervasive, individualized real time health management. As BAN deals with personal health data, securing them especially their communication over the wireless link is very crucial if there is adequate security feature for the patient in the body area sensor network then the adversaries can change the actual data which will lead to wrong diagnostics and treatment of the patient in order to provide a personalized health care system. The Body Area Network along with the group key is established for the security concern where they will provide a separate key to each of the sensors that are of deployed in the patient body when this key matches with that of the health care server system the key establishment of the network.
Keywords:Sensors, group key, body area network, physiological signals.
I.Introduction
The Body Area Network in the home health care system is used to monitor the elderly ,patients, who suffer from the chronic diseases where the sensor will send the physiological signals to the physician and in return they will send the feedback to the patient through the personal device which will provide a real time monitoring in the home health care system [3] .The security and the information access plays a vital role in home health care [8], where these can be achieved through the group key establishment among the body sensor networks these can be shared through the devices, once the data is sensed then the sensor nodes are made available [6] the main goal of the group key is to reduce the logistic constraints between the doctor and the patient
Prior studies of body area network & group key
The body area network (BAN) is a wireless network of health monitoring sensors designed to deliver the personalized health care enabling the secure inter sensor communication within the BAN in a usable manner where the Body area network is deployed in the sensors to make the communication securable [1],[4] is to ensure the confidentiality and integrity by providing the key agreement where they will exchange the secrecy among the BAN by building the channel hidden from the outsiders where by creating the artificial electrical signal[11]below the action potential by this it has no effect on the body. Securing the broadcasted data and the commands within the BAN is essential for ensuring the safety of the patient and also for preserving the privacy of the data which is established between the different sensors within the BAN another mechanism[15]to secure the communication is to place the small electrical charge around the body and use that communication medium[12]where they are in need off the minimal memory and the bandwidth resources are of needed this can be achieved by using the protocol known as the (SEV) secure environmental vault [13].By using the symmetric keys between the sensor nodes are of employed in the wireless sensor networks by using three categories such as pair wise scheme, pre distribution scheme , random key method [10], the pair wise and the random schemes are of mainly used in the individual sensors[14]that are of employed in the open environment and the pre distribution method is used for the pair of the sensors that are of deployed where they will create the trusted intermediary [7] employs the group device pairing (GDP) which is used for the secure communication in the key management protocol for the authenticated group key management in the wireless communication .
Architecture of Home Health Care System Using BAN & Group Key
The body area network in the home health care system is a predominant in the medical application where the intelligent nodes are of deployed in the patient body which has the ability to sense, process, communicate with the different physiological signals are of also known as the (PS) that are mainly used to measure the physiological signals in the patient such as the heart beat , blood oxygen level, blood pressure where the sampling rate of these physiological signals are of recorded these sample rates are of stored in the health care server then there is unusual level of the patient is continuously monitored using the sensor nodes that are of attached where these nodes are of in minimal size and weight which will provide a integrity and calibration to the user . The actuators also plays a vital role in the body area network as they inform the changes that occur in the body where the sensor will just detect the difference in the sample rate but the actuator only will be able to detect the difference that occur in which part of the body then this will be sent to the personal device .and then the physician will gives the feedback to the patient.