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The Smart Grid is based on Advanced Metering Infrastructure that mostly relies on Narrow Band Power Line Communication (PLC). In such network, using a single communication interface does not fulfill the primary requirement of 99.99% reading rates and coverage. Hybrid communication, by adding an additional radio interface, is a solution to provide the quality of service required by Smart Grid applications...
In wireless communication, the discovery of the surrounding access points is crucial to provide seamless connectivity to mobile users. In IEEE 802.11, this discovery process is performed by passive and active scanning functions. For both, timers are usually constant (within the 802.11 driver) and their configuration affects the two main scanning performance metrics, i.e., scanning latency and scanning...
In IEEE 802.16 networks, bandwidth allocation is centralized at the base station (BS). For the uplink traffic, data transmission is scheduled after the BS processes bandwidth requests (BW-REQs) sent by mobile stations (MSs). In this paper we focus on the multicast/broadcast polling method, where MSs send their BW-REQs during contention periods. Contention-based polling is deemed suitable for Best-Effort...
In 802.16 networks, bandwidth request-grant mechanisms allow managing the uplink bandwidth needs of subscriber stations. Subscriber stations send their bandwidth requests to the base station, where most of the bandwidth scheduling is centralized. After processing such requests, the base station schedules the transmission of uplink traffic. In this paper we present a preliminary investigation of some...
Multihoming protocols, such as SCTP, HIP or SHIM6 provide a framework for multiple addresses management.In wireless environments, the set of the available address of multihomed nodes frequently changes due to handovers. Asa consequence, multihoming protocols are supposed to detect such changes and if necessary rehome their ongoing sessions.Nonetheless, current multihoming protocols do not provide...
This paper presents the pre-misses of a new modular framework and a large scale experiment that we will launch for social opportunistic networks. The new framework aims at activating specific protocols depending on the application requirements. The experiment involves several students who will be equipped with PDA. Our goal is to study how the social interaction between users impact the behavior of...
In this context, a mobile user may deal with a high variety of scenarios. These scenarios consist on heterogeneous access point (AP) deployments characterized by overlapping frequencies, traffic load and high interference. Moreover, these conditions cannot be anticipated by the mobile user while moving between APs and thus an appropriate scanning algorithm is needed. The change of AP, also known as...
This paper presents the fundaments of a new source-based path selection strategy for multi-hop wireless networks (MHWNs) applying a Multiple Attribute Decision Making (MADM) algorithm. The purpose of this on-going work is to investigate new methods for improving the overall performance of such networks by exploiting paths traditionally disregarded by routing protocols. The main idea is to avoid unnecessary...
This paper presents the tools that have been developed in the IST-Anemone project, a large European testbed deployed for testing and validating IPv6 mobility protocols and products. The testbed is available to third parties, which may include research projects and companies seeking to validate IPv6-ready products. This tested is particularly suitable for ITS experimentation as it includes several...
The media independent handover (MIH) architecture is designed to facilitate the signaling and enable seamless handovers in heterogeneous networks. In this paper, we propose a solution using the stream control transmission protocol (SCTP) to efficiently carry MIH messages. The solution uses SCTPpsilas multihoming and multistreaming capabilities along with cross-layer information available through the...
Mobile devices that are equipped with multiple interfaces should choose the best path for each application. In this paper, we propose a new algorithm for path selection on multihomed end-hosts. The algorithm operates in two steps. The first step consists of using a MADM algorithm to allocate score to paths. These scores are then used by a bi-objective tasks assignment function which proposes a global...
Multihoming and mobility in IPv6 are usually considered as two disjoints concepts. This has lead to the development of the two protocols family separately. However, the new IPv6 terminals are most of the time mobile and are equipped with multiple interfaces. Thus, we need to adopt a new vision toward multihoming and mobility and propose new solutions to manage both of them. In this paper, we focus...
This paper presents an implementation of flow binding in Nepl, the NEMO Basic Support (Nemo BS) and Mobile IPv6 implementation for Linux. Flow binding is an extension to Nemo BS and Mobile IPv6 to exchange policy routing information between a distant node and the mobile node/router. This paper also presents an evaluation which shows that the implementation is working and which benefit a mobile network...
Millimetre-wave devices for intelligent transport systems (ITS) are among the research topics for road-vehicle communications (RVC) and inter-vehicle communications (IVC). Up to now, the only commercialized millimetre wave ITS devices are automotive cruise control radars (ACC), as those manufactured in France by Autocruise Company. The idea which we are working on is to implement a communication function...
In this paper, we describe the E-bicycle demonstration held within the Tour De France. It was performed by the Nautilus6 working group in order to see the impact and usage of new IPv6 mobility protocols in the real life. We report our experience of settting an IPv6 mobile network demonstration where a E-car and two E-bicycles are communicating together while being in motion. The scenario involves...
Given the relatively limited coverage area of 802.11 access points, stations moving inside WLAN are often required to perform a handover. The time needed for a STA to switch from one AP to another is too long for real-time applications to continue operating seamlessly, even if no layer 3 handover is to occur ulteriorly. Many solutions have been proposed for improving the layer 2 handover latency,...
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