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In this work, we aim to improve the gameplay of time-sensitive video games over MANETs. We focus on disconnections problem. Precisely, if the path between a game client and the server breaks, the game on the player side freezes and becomes unplayable until that the network re-establishes the path toward the server. In MANETs, these disconnections occur mainly because of nodes mobility. To overcome...
In this paper, we will address a WSN deployment problem. The main objectives are i) reduce the cost of deployment, ii) ensure the requested event detection probabilities, iii) guarantee the network connectivity, and iv) maximize the lifetime of the network. We will formalize the problem as multi-objective combinatorial optimization problem. To resolve the problem, we will propose a new deployment...
Nowadays, Wireless Mesh Networks (WMN) are increasingly supporting jointly non real-time and real time applications that required a guaranteed bandwidth. A new methodology is presented throughout this study to show that an important aspect of dimensioning WMNs, considering mobility of users, fairness and their demand according to two types of running applications. This leads to satisfying voice demand...
With the recent evolution of network-based multiplayer games and the increasing popularity of online games demanding strict real-time interaction among players - like First Person Shooter (FPS) -, game providers face the problem to correlate network conditions with quality of gaming experience. This paper addresses the problem of the estimation gameplay quality during real-time games; in particular,...
With the tremendous popularity of network-based multiplayer games and the development of wireless technologies, we believe that future game consoles will benefit from supporting MANET (mobile ad-hoc networks) mode. However, many issues still have to be addressed. Indeed, multiparty games are very sensitive to resource availability. They are very demanding on CPU and thus, high consuming on energy...
This paper addresses the issue of wireless sensor network (WSN) deployment. We investigate this problem in the case where the monitored area is characterized by a geographical irregularity of the sensed events. Precisely, we consider that each point of the deployment area requires a minimum threshold guarantee on the event detection probability. Our proposed scalable deployment method, named potential...
In this paper, we propose a new sensor deployment strategy by considering both a probabilistic sensor detection model and a monitored area with geographical irregularity requirement of the sensed events. In this case, each point in the deployment field needs a specific minimum guarantee in event detection probability. The main objective is to find the minimum number of senors and their positions,...
This paper addresses the issue of wireless bandwidth partitioning of a mobile WiMAX cell. We consider a complete partitioning strategy, where the wireless bandwidth capacity of a cell is divided into trunks. Each partition is strictly reserved to a particular type of connection. Precisely, we distinguish four IEEE 802.16e 2005 service classes: UGS, rtPS, nrtPS and ErtPS. As we consider mobility, we...
In this paper, we extend the differentiated deployment method which we have proposed in our previous paper by adding the connectivity constraint. We assume a fixed communication ray and a probabilistic detection model. We also consider that to each point in the deployment area is associated a detection probability threshold, which must be satisfied by our deployment method. Finally, we suppose that...
In this paper we propose a new content-aware ARQ scheme for H.264 video streaming over UMTS wireless links. We propose a new scheme which assesses the importance of each packet using the FMO (Flexible Macro-block Ordering) tool, a novel error robustness tool of H.264 video encoding standard. Temporal values are then given to video packets in respect to their importance. Carried out simulations show...
In this paper, we propose a mathematical model with the aim to give guidelines for the dimensioning of WiMax bandwidth provisioning service to residential customers. Our proposal relies on the modeling of a CAC policy associated to a priority-based bandwidth sharing strategy. Both mechanisms aim to satisfy Quality of Service constraints while maximizing the gain of the system. But unlike in , we do...
Underwater sensors technology has experienced a tremendous development over the last decade. They have generated considerable community enthusiasm, which applied them to a wide range of cases that could enhance human and animal habitat conditions e.g. climate changes prediction or pollution surveillance. In this paper, we address the issue of deploying a UWSN in an area characterized by the geographical...
Video delivery over wireless networks is a great challenge. For this purpose, the latest video coding standard, namely H.264, introduces a network-friendly layer to facilitate interaction between the encoder and the network. In addition, the set of error resilience tools defined by this standard is of great interest, given the need for such mechanisms in the specific context of an error prone link,...
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