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The scenarios envisaged for the paradigm of vehicular cloud computing (VCC) have been limited by the challenges derived from the mobility of the vehicles, to the point that most of the proposals in the literature merely deal with vehicles in parking lots, stuck in traffic jams or moving as a flock for a long time. We present an approach to overcome those limitations by engaging the vehicles in collaboration...
We consider a scenario that device-to-device (D2D) communication is enabled in a cellular network. The licensed spectrum of the macro-cell operator is divided into sub-bands, which are able to be leased to the unlicensed subscribers to perform D2D communication. The licensed subscribers of the macro-cell in the shared sub-bands are protected by the maximum tolerable interference level constraint,...
Internet of Things (IOT) is experiencing a super-fast growing phase. Wireless Sensor Networks (WSN), as the “five sense organs” and teleneuron of IOT, is developing fast along. Owing to the application-oriented characteristics of WSN, WSN applications may differ enormously in implementation methods. The WSN developers may have to rewrite the code for each and every application. Along with the increasing...
As more bandwidth hogging applications like video streaming or video conferencing are entering the telecom market, indoor networks need to be more efficient, failure-resilient and flexible. WiFi have predominantly been the most ubiquitous indoor wireless technology. WiFi Access Points (APs) are placed progressively in indoor locations resulting in highly congested ISM spectrum bands. Thus users are...
This paper proposes a low-cost global mobility management architecture and protocol procedure called LC-GM2, which is based on Proxy Mobile IPv6 (PMIPv6) networks. The benefit is the elimination of the wireless link data delivery tunnel overhead between a mobile node and the access router. To compare with the well-known Hierarchical Mobile IPv6 (HMIPv6) mobility management protocol and Global Mobility...
Recently there is high demand for ubiquitously distributing multimedia services to mobile subscribers by Internet Service providers (ISPs). These services can be restricted to authorized subscribers via integration of authentication and group key management (GKM). It is expected that significant key management overhead will rise due to diverse subscription of multi-services co-existing in the same...
Achieving an energy-efficient home network while providing high quality user service is and will continue to be a significant need for the future residential environment. In this home network environment, numerous home appliances are widely used and also integrally turned on to contribute to the home network service. But these appliances are used partially in different service requirements. Therefore,...
For the last few years the idea of large volume resources storage with usage by indirect organizations has become widespread. Such services are often termed “data outsourcing” or “cloud storage”. This service allows information owner (clients) to allocate their data on the server for certain payment. In turn, the server must provide integrity and availability of the data. Thus, using scarce technical...
The Optical Turing Machine (OTM) is an approach to digital optical processing that supports computation in the same format used for high-speed transmission. This paper identifies the key capabilities required to support native digital optical processing for typical in-network functions including forwarding, security, and filtering. Current analog and binary digital approaches — including optical transistors...
This study outlines the challenges in developing a platform to support environmental monitoring, and demonstrates a solution approach based on the modification of a popular reactive routing protocol known as Ad-hoc On-demand Multipath Distance Vector (AOMDV). The proposed modifications (event based, robust routing functions) in AOMDV are desirable to facilitate better wireless connectivity for current...
Computational power for content filtering in high-speed networks reaches a limit, but many applications as intrusion detection systems rely on such processes. Especially signature based methods need extraction of header fields. Hence we created an parallel protocol-stack parser module on the NetFPGA 10G architecture with a framework for simple adaption to custom protocols. Our measurements prove that...
During the execution of parallel applications, there might be a very large number of exchanged messages between the computing nodes. Hence, the communication delays crucially influence the execution time of the whole application and a suitable communication approach should be selected to minimize the execution time. Selecting a suitable communication scheme requires a model that allows to compare...
In this paper, we present measurement results of material penetration loss and reflection coefficient as a function of antenna polarization at 5.8 GHz. The measurements were made in a typical building hallway with a variety of test materials. This is a unique measurement campaign because the same antenna apertures were used to create three different types of polarizations: linear, circular polarized,...
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