An integrated high performance, highly reliable, scalable, and secure communications network is critical for the successful deployment and operation of next-generation electricity generation, transmission, and distribution systems—known... more
An integrated high performance, highly reliable, scalable, and secure communications network is critical for the successful deployment and operation of next-generation electricity generation, transmission, and distribution systems—known as “smart grids. ” Much of the work done to date to define a smart grid communications architecture has focused on high-level service requirements with little attention to implementation challenges. This paper investigates in detail a smart grid communication network architecture that supports today’s grid applications (such as supervisory control and data acquisition [SCADA], mobile workforce communication, and other voice and data communication) and new applications necessitated by the introduction of smart metering and home area networking, support of demand response applications, and incorporation of renewable energy sources in the grid. We present design principles for satisfying the diverse quality of service (QoS) and reliability requirements ...
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: WHAT PUBLIC SAFETY NEEDS IN AN EMERGENCY IS A public safety-controlled network with the ability to efficiently access and share accurate and timely voice and information during all stages of an event in any geographic location with the... more
: WHAT PUBLIC SAFETY NEEDS IN AN EMERGENCY IS A public safety-controlled network with the ability to efficiently access and share accurate and timely voice and information during all stages of an event in any geographic location with the appropriate resources, interoperability, robust and reliable capacity, based upon the needs of the responders, and with the ability to dynamically scale to changes in the situation. 16 This document describes the network architecture for a Canadian public safety broadband communications network expected to operate in the 700 MHz band. It aligns with the governance model as currently endorsed by the senior officials responsible for emergency management in Canada (SOREM), which contains two layers of operational responsibility a national entity and multiple regional service delivery entities (RSDE). The network architecture is also aligned with the service delivery model whereby the users of the public safety broadband network (PSBN) are clients of th...
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La presente invention concerne, dans des modes de realisation, un procede et un systeme de commande d'admission d'appel pour un reseau d'evolution a long terme (LTE) partage entre une pluralite de classes d'utilisateurs... more
La presente invention concerne, dans des modes de realisation, un procede et un systeme de commande d'admission d'appel pour un reseau d'evolution a long terme (LTE) partage entre une pluralite de classes d'utilisateurs comme, par exemple, une classe d'utilisateurs de securite publique et une classe d'utilisateurs de consommation. Un module de commande d'admission supervise le procede d'admission d'appel en fonction d'un profil de strategie specifie. Lorsque les ressources sont insuffisantes dans le reseau pour prendre en charge un appel entrant, le module de commande d'admission consulte un module de preemption afin de determiner si, par preemption des appels de faible priorite, des ressources suffisantes peuvent etre recuperees pour prendre en charge l'appel entrant.
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A simulation of the Digital European Cordless Telecommunications (DECT) system catering for voice and a variety of data services in a typical office environment has been undertaken to assess its teletraffic performance. The mixture of... more
A simulation of the Digital European Cordless Telecommunications (DECT) system catering for voice and a variety of data services in a typical office environment has been undertaken to assess its teletraffic performance. The mixture of duplex connections employing distinct numbers of time slots per TDMA frame resulted in a poorer grade of service (GoS) for those services having a higher
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The teletraffic performance parameters of a mobile radio network based on a non-geostationary satellite system are estimated through analytical and simulation methods. Parameters of interest include blocking, handover failure and... more
The teletraffic performance parameters of a mobile radio network based on a non-geostationary satellite system are estimated through analytical and simulation methods. Parameters of interest include blocking, handover failure and non-completion probabilities. Effects of different handover channel assignment strategies upon the grade of service are investigated. Results will show that the estimated parameters are in good agreement with the simulation
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Research Interests: Engineering, Statistics, Technology, Statistical Analysis, Density-functional theory, and 15 moreSimulation, Standard Deviation, Radio Frequency, Accuracy, Delays, RF signals, Lognormal Distribution, Quadrature Amplitude Modulation, Cellular system, Cumulant, Propagation delay, Repeater, RMS delay spread, Multipath Propagation, and Exponential Decay
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AbstractIn this paper, the teletraffic performance parameters of a nongeostationary satellite system are estimated through analytical and simulation methods. In order to reduce the number of assumptions, the simulation tool that was... more
AbstractIn this paper, the teletraffic performance parameters of a nongeostationary satellite system are estimated through analytical and simulation methods. In order to reduce the number of assumptions, the simulation tool that was developed emulates a mobile satellite system ...
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... Power Research Institute GPONGigabit passive optical network GPSGlobal positioning systemGSMGlobal System ... Enterprise (corporate) voice P2P Low/v. low Low High Medium ... and the smart grid applications enforcing grid policies... more
... Power Research Institute GPONGigabit passive optical network GPSGlobal positioning systemGSMGlobal System ... Enterprise (corporate) voice P2P Low/v. low Low High Medium ... and the smart grid applications enforcing grid policies through the actuators based on these ...
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Many systems (e.g, wireless systems, routers, etc.) are designed to shut down at high operating temperatures to protect the electronics from overheating. Setting the shutdown threshold high would reduce the frequency of shutdown events,... more
Many systems (e.g, wireless systems, routers, etc.) are designed to shut down at high operating temperatures to protect the electronics from overheating. Setting the shutdown threshold high would reduce the frequency of shutdown events, while increasing the system failure rate due to higher component junction temperatures. Setting the threshold low would reverse the relative downtime contributions from the two competing