A system for managing transfer of data in a medical body area network 'MBAN', the system comprising: one or more sensor units disposed on a patient and configured to acquire data from the patient; one or more detachable wireless communication and battery units, wherein the one or more detachable wireless communication and battery units are detachably coupled to a corresponding sensor unit; a patient monitoring device in bi-directional wireless communication with the one or more detachable wireless communication and battery units and configured to: receive sensor data; and maintain network connectivity between the one or more wireless communication and battery units and the patient monitoring device based on an operating condition of at least one wireless communication and battery unit of the one or more wireless communication and battery units, wherein the patient monitoring device comprises: a proximity-based communication subunit configured to obtain a unique identification corresponding to the at least one wireless communication and battery unit using a proximity-based communication interface; and a wireless communication subunit configured to: broadcast the unique identification of the at least one wireless communication and battery unit; receive a request from the at least one wireless communication and battery unit having the unique identification; and transmit information in response to the request to the at least one wireless communication and battery unit, wherein a wireless communication subunit of the at least one wireless communication and battery unit is configured to transmit the operating condition of the at least one wireless communication and battery unit to the patient monitoring device. one or more sensor units disposed on a patient and configured to acquire data from the patient; one or more detachable wireless communication and battery units, wherein the one or more detachable wireless communication and battery units are detachably coupled to a corresponding sensor unit; a patient monitoring device in bi-directional wireless communication with the one or more detachable wireless communication and battery units and configured to: receive sensor data; and maintain network connectivity between the one or more wireless communication and battery units and the patient monitoring device based on an operating condition of at least one wireless communication and battery unit of the one or more wireless communication and battery units, receive sensor data; and maintain network connectivity between the one or more wireless communication and battery units and the patient monitoring device based on an operating condition of at least one wireless communication and battery unit of the one or more wireless communication and battery units, wherein the patient monitoring device comprises: a proximity-based communication subunit configured to obtain a unique identification corresponding to the at least one wireless communication and battery unit using a proximity-based communication interface; and a wireless communication subunit configured to: broadcast the unique identification of the at least one wireless communication and battery unit; receive a request from the at least one wireless communication and battery unit having the unique identification; and transmit information in response to the request to the at least one wireless communication and battery unit, a proximity-based communication subunit configured to obtain a unique identification corresponding to the at least one wireless communication and battery unit using a proximity-based communication interface; and a wireless communication subunit configured to: broadcast the unique identification of the at least one wireless communication and battery unit; receive a request from the at least one wireless communication and battery unit having the unique identification; and transmit information in response to the request to the at least one broadcast the unique identification of the at least one wireless communication and battery unit; receive a request from the at least one wireless communication and battery unit having the unique identification; and transmit information in response to the request to the at least one wireless communication and battery unit, wherein a wireless communication subunit of the at least one wireless communication and battery unit is configured to transmit the operating condition of the at least one wireless communication and battery unit to the patient monitoring device.