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The authors have proposed a fair solution to optimal rate adaptation. The problem has been described in terms of the objective function, decision variables and constraints. Furthermore, using this problem definition, a rate adaptation heuristic was developed and divided into two sub- problems; part one requires finding the optimal rate allocation within the network, part two continues by finding a...
The aggregate capacity of wireless mesh networks is severely affected by interflow interference. Directional antennas and multiple channels are two well known techniques which can be applied to mitigate interflow interference. In this work, a network architecture is proposed to incorporate directional antennas with multiple orthogonal channels effectively to enhance the performance of wireless mesh...
Designing a multi-hop wireless network is a challenge mainly because of high bit error rates and the inherent broadcast nature of the medium creating interference. To improve the capacity, protocols based on spatial reuse of frequencies with multiple orthogonal channels have been introduced. This is particularly useful in complete wireless environments such as wireless mesh networks and wireless sensor...
We propose a link quality assured topology control algorithm for sensor network in this paper, which is based on the received signal strength indicator (RSSI). We take the uncertainty of wireless links into algorithm design consideration by adopting the quasi-UDG wireless communication model. LQATC can guarantee the network connectivity, link symmetry, and reasonable degree of nodes. Furthermore,...
Wireless Mesh Networks (WMNs) have the potential for improving network capacity by employing multiple radios and multiple channels (MRMC). Channel Assignment (CA) is a key issue that plays vital role in defining WMN throughput by efficient utilization of available multiple radios and channels there by minimizing network interference. The two important issues that are needed to be addressed by CA algorithm...
Topology control for maximizing network capacity for the practical power-fixed IEEE 802.11-based ad hoc networks is deeply investigated in this paper. Several interference-model-based algorithms have been proposed to maximize network capacity through reducing interference during recent years. However, most of those algorithms are based on node location and not practical in IEEE 802.11-based ad hoc...
Recent research results show that the use of partially overlapped channel (POC) can significantly improve network capacity. In this paper we present an analytical model to estimate the capacity improvement added by the use of POC in wireless networks. We mathematically characterize the effect of node density, node distribution, network topology and traffic pattern on the performance of POC based approach...
Coding advantage refers to the potential for network coding to improve end-to-end throughput or reduce routing cost. How large can the coding advantage be? We investigate this fundamental question in the classic undirected network model. So far, all known networks where such potential exists are based on a special class of topologies known as combinatorial networks. We try to prove a rather small...
Wireless mesh networking technology has gained prominence in recent years with a diverse range of applications from small community-based networks to metropolitan area networks. Such mesh networks typically comprise a wireless backbone connected to the wired infrastructure with wireless client residing at the edge. The wireless routers and access points of a wireless mesh network (WMN) are connected...
In this paper, we propose an adaptive pacing scheme at the link layer for IEEE 802.11 based multihop wireless networks. Our objective is to improve the performance of higher layer protocols without any modifications to them. Our adaptive pacing scheme estimates the four-hop transmission delay in the network path without incurring any additional overheads, and accordingly paces the packets to reduce...
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