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In this article we propose solutions to diverse conflicts that result from the deployment of the (still immature) relay node (RN) technology in LTE-A networks. These conflicts and their possible solutions have been observed by implementing standard-compliant relay functionalities on the Vienna simulator. As an original experimental approach, we model realistic RN operation, taking into account that...
Mobile data traffic has exploded over the last few years, especially with the introduction of smart phones in conjunction with increased capacity of mobile networks (HSDPA, LTE). It is commonly admitted that this continuous growth of traffic will induce congestion on the radio segment, usually considered as the bottleneck of the mobile chain. QoS mechanisms adapted to the radio segment are then potentially...
To combat the challenges(the mismatch between throughput and layer delivery ratio, the useless packets in high layers due to the loss of packets in low layers) brought by the layered encoding to data scheduling for P2P streaming in the mobile network, We propose a new data scheduling scheme, named MLayerP2P. The key idea of the MLayerP2P is: A 3-Stage Model is used to schedule the absent streaming...
The mobility issue in grid environments has established new challenges to the research communities particularly in the areas of scheduling, adaptation, security and mobility. Especially, the resource allocation becomes more challenging when mobility is considered in grid environment. Hence it is necessary to consider the mobility of users along with the resource availability while scheduling the resources...
This paper studies the delay constrained multicast capacity of large scale mobile ad hoc networks (MANETs). We consider a MANET that consists of ns multicast sessions. Each multicast session has one source and p destinations. Each source sends identical information to the p destinations in its multicast session, and the information is required to be delivered to all the p destinations within D time-slots...
In wireless networks, the definition of fair resource allocation is ambiguous because the wireless channel condition is not constant over time and location. Two main ways to define fair resource allocation are: by number of allocated service time units per user, temporal fairness, or the number of transmitted bytes per user, throughput fairness. In wireless broadband networks i.e., IEEE 802.16e Mobile...
A major design issue in Multi-hop Wireless Networks is the Medium Access Control (MAC) protocols that determine how nodes share the channel to transmit their packets. One type of MAC protocol with efficient spatial reuse characteristics are the Spatial TDMA (STDMA) protocols. STDMA protocols are a class of conflict-free MAC protocols that enable high spectral utilization by scheduling transmissions...
This paper presents a novel priority queue scheduling algorithm named energy-efficient and load-balanced queue scheduling algorithm (ELQS) for Mobile Ad Hoc NETwork (MANET) considering both mobile nodes' congestion levels and the nodes' energy usage, which uses mixture of energy balance and traffic balance to solve the problem of "hot spots", some mobile nodes with heavy traffic load using...
Recently, multi-hop networks have obtained a growing interest in the applications in which the network needs to be deployed rapidly. In order to achieve high capacity packet transmission in wireless multi-hop networks, many medium access control (MAC) schemes have been proposed to maximize the system throughput. Besides, energy efficiency is a critical issue since the battery power of the mobile terminals...
In this work, we present, CaSMA, a packet scheduling mechanism for mobile ad hoc networks (MANETs) that takes into account both the congestion state and the end-to-end path duration. We show that CaSMA approximates an ideal scheduling mechanism in terms of maximizing the good put and sharing the throughput (losses) fairly among the contending flows. Further, the simulation results show that both average...
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