Manfred Schneps-Schneppe

Wired Smart Home: Energy metering, security, and emergency issues

This paper discusses the specific area of M2M applications - Wired Smart Home. It contains the overview of requirements to Wired Smart Home in the scope of energy metering, security, and emergency communications. We consider ETSI activities on M2M standardization, Open Metering System specification, and Emergency Communications. In the field of software issues, we offer a newer web tool - Web Intents as a modern enhancement of M2M middleware. Also, the experience in Wired Smart Home implementation is given.

About Location-aware Mobile Messages: Expert System Based on WiFi Spots

this paper describes a new model for proactive messages delivery to mobile phones. SpotEx application can use any Wi-Fi access point as presence sensor that could activate delivery for some user-generated messages right to mobile phones. The key idea is how to associate some user-defined messages and Wi-Fi access points. As a result we can build rule-based expert system that describes delivery of user-defined messages depending on visibility of Wi-Fi hotspots.

Service level agreement as an issue of teletraffic

After discussion of SLA issues the mathematical methodology—how to design the global SLA index on the basis of Linear Discriminant Functions — is developed. The experience of Verizon New York company is used as a best practice. Service quality monitoring is a useful base for the teletraffic community to join, around for future packet switching network studies.

On Erlang B-formula and ERT method extension

The key result of the paper is the theorem on traffic splitting and the ERT method extension for estimation of the throughput for schemes with traffic splitting. The excellent accuracy (relative error is less than 1%) is shown in numerical example. The paper also contains new Erlang-B formula algorithm for non-integer number of channels based on parabolic approximation.

Call Admission Control in Cellular Networks

The service area of a cellular network is divided into cells. Users are connected to base stations in the cells via radio links. Channel frequencies are reused in cells that are sufficiently separated in distance so that mutual interference is below tolerable levels. When a new call is originated in a cell, one of the channels assigned to the base station of the cell is used for communication between the mobile user and the base station (if any channel is available for the call). If all the channels assigned to this base station are in use, the call attempt is assumed to be blocked and cleared from the system (blocked calls cleared). When a new call gets a channel, it keeps the channel until either the call is completed inside the cell or the mobile station (user) moves out of the cell. When the call is completed, the channel is released and becomes available to serve another call.

On the role of subjective assessments in IPTV quality configuration

There is currently no method for quality measurement suitable for the resolution of disputes between IPTV operators and governing regulators; the G.107 ITU and G.1070 ITU standards employ too many objective measurements, which complicates their application. The appropriateness of the development of practical techniques for collecting subjective quality evaluations of the IPTV themselves is shown; such factors can serve as a basis for solving the disputes mentioned. The problem of simplifying the ITU G.107 and ITU G.1070 standards by multivariate statistical analysis and selection of the most informative objective quality indicators is shown.

ITU G.hn Concept and Home Automation

For long time, many in the buildings industry have been looking for a day when home automation systems would become fully integrated with communication and human-interface practices, with standards widely employed for information technology. Now the time is coming in the form of the ITU Recommendations G.hn.

Circuit switching is coming back

AbstractCommunication specialists around the world are facing the same problem: shifting from circuit switching (CS) to packet switching (CS). Communication service providers are favoring “Allover-IP” technologies hoping to boost their profits by providing multimedia services. The main stakeholder in this field of the paradigm shift is the industry itself: packet switching hardware manufacturers are going to earn billions of dollars and thus pay engineers and journalists many millions for the promotion of the new paradigm. However, this drive for profit is tempered by life itself. This article is devoted to the discussion of the telecommunications development strategy. We will provide examples to illustrate the difficulties that complicate the transition from CS to PS and make us question the feasibility of shifting the telecommunications paradigm. We will consider two examples: (1)the development of the global information grid (GIG) of the United States Department of Defense communications network, the world’s largest departmental network, which is still based on SS7 signaling and an intelligent network(2)the emergence of new trends in microelectronics: the construction of networks on a chip (NoC) oriented towards packet switching, where a return to packet switching is observed.

Application of Erlang’s formula for non-Poisson flows

An improved method of equivalent random traffic (ERT) has been developed, thus making it possible to compute the parameters of splitting flows of calls, which makes it different from the classical ERT method operating only with combined flows of calls. The numerical analysis indicated that this method has an increased accuracy for independent flows. For dependent flows, the approximation’s accuracy is reduced, and the correlation between them should be taken into account.

On Equivalent Random Traffic method extension

The key result of the paper is the Equivalent Random Traffic (ERT) method extension for estimation of the throughput for schemes with traffic splitting. The excellent accuracy (relative error is less than 1%) is shown in numerical example. A numerical algorithm is given — how to estimate the throughput for schemes at traffic splitting and merging. The paper also contains new Erlang-B formula algorithm for non-integer number of channels based on parabolic approximation.