Alcatel-Lucent

About: Alcatel-Lucent is a based out in Stuttgart, Germany. It is known for research contribution in the topics: Signal & Network packet. The organization has 37003 authors who have published 53332 publications receiving 1430547 citations. The organization is also known as: Alcatel-Lucent S.A. & Alcatel.

Scheduling on-demand broadcasts: new metrics and algorithms

Abstract: This paper examines the scheduling problems that occur in on-demand broadcast environments. The authors describe an algorithm named MAX which is capable of finding the right balance between the individual and global performance.

Beyond best effort: router architectures for the differentiated services of tomorrow's Internet

Abstract: With the transformation of the Internet into a commercial infrastructure, the ability to provide differentiated services to users with widely varying requirements is rapidly becoming as important as meeting the massive increases in bandwidth demand. Hence, while deploying routers, switches, and transmission systems of ever increasing capacity, Internet service providers would also like to provide customer-specific differentiated services using the same shared network infrastructure. We describe router architectures that can support the two trends of rising bandwidth demand and rising demand for differentiated services. We focus on router mechanisms that can support differentiated services at a level not contemplated in proposals currently under consideration due to concern regarding their implementability at high speeds. We consider the types of differentiated services that service providers may want to offer and then discuss the mechanisms needed in routers to support them. We describe plausible implementations of these mechanisms (the scalability and performance of which have been demonstrated by implementation in a prototype system) and argue that it is technologically possible to considerably raise the level of differentiated services which service providers can offer their customers, and that it is not necessary to restrict differentiated services to rudimentary offerings even in very-high-speed networks.

An interactive system for communications between a cordless telephone and a remotely operated device

Abstract: An interactive communication system includes a portable unit of a cordless telephone for providing wireless telephone communications and integrating telephone functions and control of remotely operated devices, such as television sets, video cassette recorders and cable converters. The portable unit advantageously provides controlling information to a remotely operated device in response to voice and data communications occurring over the telephone network.

Submillisecond protein folding kinetics studied by ultrarapid mixing

Abstract: An ultrarapid-mixing continuous-flow method has been developed to study submillisecond folding of chemically denatured proteins. Turbulent flow created by pumping solutions through a small gap dilutes the denaturant in tens of microseconds. We have used this method to study cytochrome c folding kinetics in the previously inaccessible time range 80 μs to 3 ms. To eliminate the heme–ligand exchange chemistry that complicates and slows the folding kinetics by trapping misfolded structures, measurements were made with the imidazole complex. Fluorescence quenching due to excitation energy transfer from the tryptophan to the heme was used to monitor the distance between these groups. The fluorescence decrease is biphasic. There is an unresolved process with τ < 50 μs, followed by a slower, exponential process with τ = 600 μs at the lowest denaturant concentration (0.2 M guanidine hydrochloride). These kinetics are interpreted as a barrier-free, partial collapse to the new equilibrium unfolded state at the lower denaturant concentration, followed by slower crossing of a free energy barrier separating the unfolded and folded states. The results raise several fundamental issues concerning the dynamics of collapse and barrier crossings in protein folding.

Call distribution based on agent occupancy

Abstract: A call-distribution function (150) of an ACD system (101) improves the equity of distribution of calls to agents (106-108) by basing the distribution on the agents' individual occupancies. Illustratively, determining an agent's occupancy involves either determining (304) how many calls the agent has handled within a predetermined time interval, or determining (305) how much time of a predetermined time interval the agent has spent on handling of calls. The occupancy is periodically re-determined, and a next call is allocated to the presently least-occupied one of agents who are available to take the call, or to an agent to whose occupancy the allocation will be most beneficial, such as an available agent to whom allocation of the call will maximize convergence of actual and target occupancies. A queue (135) of agents available is ordered in the inverse order of the agent's occupancies, and a newly-available agent is slotted (inserted) (306) into the queue in a position (202) that ensures the continued inverse ordering of the agent queue. The occupancies of agents are then re-determined (308) and the agents are re-enqueued (310) accordingly.