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

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

Rajeev Agrawal (G L Bajaj Institute of Technology and Management, Greater Noida, India) and Amit Sehgal (G L Bajaj Institute of Technology and Management, Greater Noida, India)
DOI: 10.4018/IJWNBT.2015070101
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Abstract

This paper introduces an information theoretic approach for location management in cellular/mobile networks and allows the network to maintain the record of the mobility pattern of every user. The critical nature of remote healthcare service demands for continuous updates on the location of healthcare expert with the patient monitoring device. To reduce the paging cost, the proposed work uses the information from the system database by representing given past knowledge of the mobility pattern using Markov Chain. The expected search under the proposed work reduces number of search required in the earlier techniques. An entropy-per-location based scheme has also been introduced for comparative analysis among different models. This scheme can also be utilized as a general comparative framework for schemes to be introduced in future m-Health framework.
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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.

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