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Heidelberg, Germany

Taleb T.,NEC Europe Ltd.
IEEE Wireless Communications | Year: 2014

Mobile operators are in need of means to cope with the ever increasing mobile data traffic, introducing minimal additional capital expenditures on existing infrastructures, principally due to the modest average revenue per user. Network virtualization and cloud computing techniques, along with the principles of the latter in terms of service elasticity, on-demand, and payper-use, could be important enablers for various mobile network enhancements and cost reduction. This article discusses the recent trends the mobile telecommunications market is experiencing, showcasing some of the emerging consumer products and services that are facilitating such trends. The article also discusses the challenges these trends present to mobile network operators. It also demonstrates the possibility of extending cloud computing beyond data centers toward the mobile end user, providing end-to-end mobile connectivity as a cloud service. The article introduces a set of technologies and methods for on-demand provision of a decentralized and elastic mobile network as a cloud service over a distributed network of cloud computing data centers. The concept of Follow-Me-Cloud, whereby not only data but also mobile services intelligently follow their respective users, is also introduced. The novel business opportunities behind the envisioned carrier cloud architecture and service are also discussed, considering various multi-stakeholder scenarios. © 2002-2012 IEEE.


Benslimane A.,University of Avignon | Taleb T.,NEC Europe Ltd. | Sivaraj R.,Tata Consultancy Services Ltd.
IEEE Journal on Selected Areas in Communications | Year: 2011

Coupling the high data rates of IEEE 802.11p-based VANETs and the wide coverage area of 3GPP networks (e.g., UMTS), this paper envisions a VANET-UMTS integrated network architecture. In this architecture, vehicles are dynamically clustered according to different related metrics. From these clusters, a minimum number of vehicles, equipped with IEEE 802.11p and UTRAN interfaces, are selected as vehicular gateways to link VANET to UMTS. Issues pertaining to gateway selection, gateway advertisement and discovery, service migration between gateways (i.e., when serving gateways lose their optimality) are all addressed and an adaptive mobile gateway management mechanism is proposed. Simulations are carried out using NS2 to evaluate the performance of the envisioned architecture incorporating the proposed mechanisms. Encouraging results are obtained in terms of high data packet delivery ratios and throughput, reduced control packet overhead, and minimized delay and packet drop rates. © 2011 IEEE.


A method for providing device connectivity to a radio access network, wherein at least two devices are connectable or connected to the radio access network and wherein the at least two devices are members of a group of devices within a wireless local network, the members of the group of devices having the capability to establish a direct connection with other members of the group of devices, includes providing connection information used for a connection between a first device of the at least two devices and the radio access network to a second device of the at least two devices. The connection information enables the second device to connect to the radio access network.


Patent
NEC Europe Ltd. | Date: 2014-04-11

A computer-implemented method for assigning tasks to a plurality of agents includes determining, by a processor, a stance for an agent of the plurality of agents; and, when an unassigned task is available, assigning, by the processor, the unassigned task to an agent in the second stance. The stance is selected from the group consisting of a first stance and a second stance. Determining the stance is based on whether an unassigned task is available. The first stance relates to balancing tasks among the plurality of agents and the second stance relates to maximizing an amount of tasks assigned to a subset of the plurality of agents.


Patent
NEC Europe Ltd. and NEC Corp | Date: 2014-01-10

A communication method in LIPA/SIPTO architecture is provided which, when a user equipment (UE) is to connect from a serving area to an external network, allows re-selection of an optimal gateway. The communication method allows selecting a gateway apparatus physically or topologically close to a site, where the user equipment is attached.

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