Information Theoretic Approach with Reduced Paging Cost in Wireless Networks for Remote Healthcare Systems

Introduction

In remote healthcare systems, whereabouts of the patient must be known in advance to deliver required medical aid in case of clinical urgency. In recent years, several remote health monitoring systems have been developed and tested to provide pre - and post - hospitalization healthcare services anywhere and anytime for chronic diseases. Such systems demand for instant connectivity of the patient with healthcare expert when the monitored vital signs report critical condition. Increased use of Smartphone has enabled the well-established cellular architecture to be utilized for fast connectivity between patient and doctor. At the time of deployment of the system, phone numbers of one or more doctors can be stored in the device to connect in case of emergency. Auto-dial feature generates a connection request to the doctor or sends a summary of clinical state of the patient through message. In context to user location, coverage zones in cellular systems are grouped into Location Areas (LA). Movement of the users changes their location information in terms of a particular LA in which they are present at any particular instant of time. This information is updated with the network, called as Location Update (LU) and utilized to page the cells within the LA when a user needs to be located as quickly as possible. Several schemes have been proposed (Baek, W. M., Yoon, J. H., & Kim, C., 2014; Li Kequin, 2013; Martin, 2011; Shin-Lin Wu, Jen-Jee Chen, & Wen-Chiang Chou, 2013; Xian Wang, Xianfu Lei, Pingzhi Fan, R. Q. Hu, R. Q., & Shi-Jinn Horng., 2014) to design LAs and attempts are being made to suggest optimal standards to update location of the user. Paging and user mobility have been used to evaluate the schemes related to LA and LU to assist in improvement of location management (LM) through refining of the related models.