Der vorliegende Beitrag stellt unterschiedliche Anforderungen dar, die sich aus Sicht der Betreiber bei der Öffnung von Campusnetzen für die mobile Nutzung ergeben. Dabei wird beispielhaft sowohl der authentifizierte Zugang zu öffentlich zugänglichen Netzen (z. B. WLANs) auf dem Campus, wie auch der Zugang von entfernten Standorten zu abgesicherten Institutsnetzen betrachtet. 1 Einleitung Eine ...

Respiration Rate is one of the vital signs which require regular monitoring among diseased people. There are a number of medical devices developed to monitor human health condition among them RR monitor is one. The Respiration rate monitor is a device that measures the subject’s respiration rate non-invasively. The objective of the proposed work is to design and develop a low cost Respiration r...

The properties of the radio transmission channel, and consequently the performance of a mobile radio network, are highly sensible to the movements of the users. The user behaviour influences the link quality, cell dwell times, handover rates, outage probability, etc. Existing networks as, e.g., the Global System for Mobile Communications (GSM) have a rather fixed structure. They can only adapt ...

This paper describes the early history of GSM, who founded it, and why it was founded. Some services of GSM will be described like SMS, and the emergency call service. The network layout of GSM, and the layers of the protocol will also be described. Introduction GSM was conceived in the early 1980’s by the study group: Groupe Spécial Mobile. GSM had some ambitious goals, some were met, and some...

This paper presents a detailed study on comparison of different remote monitoring systems. There are many systems for remote monitoring and control, designed as either commercial products or experimental research platforms. It is noticed that most of the research are carried out in categories such as Internet based Monitoring via Servers, GPRS modems, etc. There are different other approaches f...

Driver fatigue and lack of sleep of drivers especially those who drive for a longer period of time as train accidents are a longer standing problem. It has been observed that each year numerous train accidents and fatalities may occur around the world due to driver falling asleep while driving the train. There are various traditional methods that may facilitate to detect drowsiness state of the...

Homecare is the provision of health care services to patients in their own home. One of the main purposes of homecare telemedicine is to develop a wireless, low-cost and use-friendly system which allows patients to measure their own vital signs, such as heart rate and temperature, and provide the health care professionals with the facility to remotely monitor the patient's vital signs quickly a...

Status of this Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Abstract The Layer 2 Tunneling Protocol (...

This chapter presents a broad study on the potential of applying RRM techniques to the global system for mobile communication (GSM)/enhanced data rates for GSM evolution (EDGE) system. Even though the presented results are focused on the GSM/EDGE system, the principles employed by most of the considered RRM techniques can be applied to other radio access networks (RANs). We thus hope that the r...