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Named data networking (NDN) as a promising future network architecture has been widely considered as a very appropriate network protocol for multihop wireless network (MWN). In named-data MWN, congestion control, forwarding strategy, and power control are three coupled critical issues. There are already extensive works about cross-layer design for MWN with IP and they have demonstrated the advantage...
Transmission Control Protocol (TCP) is a connection-oriented protocol for reliable end-to-end data delivery over IP networks. Many TCP variants assume that packet loss occurs due to network congestion when wired networks have very low bit error rate. TCP reacts to unreliable network conditions by slowing down the data flow with congestion window adjustment. However, the nature of frequent noise in...
When multiple video streams are delivered in wireless networks, careful rate allocation is desirable to share the available bandwidth without overflowing the whole network or any individual link, as well as to maximize the total received quality among the competing streams. This paper presents a distributed rate allocation for Rate Distortion (R-D) optimal multiple video streaming in a video- and...
The rapid spread of wireless mobile devices and the advances of wireless communication have fueled the interest about streaming 3D graphics on mobile devices to be used in augmented reality based classes of applications. In these types of applications, a real world is mapped into the virtual world and thin mobile devices are employed to navigate in the virtual simulated environment (VE). In evidence,...
In wireless communication networks, TCP is a widely applied solution as it guarantees the delivery of data by implementing acknowledgement based techniques and used in wired networks as it ensures guard against the common remedy congestion in networks. Deploying TCP over wireless networks, restrictions such as random link errors, random packet loss, node distance, constantly changing topology are...
Forward Error Correction (FEC) techniques have been adopted with Automatic Repeat reQuest (ARQ) to overcome packet losses and avoid network congestion in various wireless network conditions. Two factors have been used which are queue length and packet retransmission times. According to these two factors, two different weight values are used to generate consistence and smooth value of queue length...
Cognition concept and dynamic spectrum allocation (DSA) technique are applied in cognitive wireless network to increase spectrum utilization efficiency and alleviate network congestion. Due to the dynamic and random characteristic of radio environment in cognitive wireless network, this paper brings forward a dynamic channel allocation mechanism to minimize the probability of collision with the licensed...
Applications involved with multimedia streaming are blooming with the development of Internet and wireless networks. In this paper, we address the problem of how to jointly leverage power control and rate allocation to achieve high-performance video streaming with strict delay and energy over wireless ad-hoc networks. We focus on media-aware rate allocation and power control with goal of minimizing...
In recent years wireless mesh networks (WMN) gained lots of attention in research and industry. Especially, the use of WMNs for community networks proved their ability to provide a high performance Internet access while demanding little deployment planning. However, one problem became apparent. Network congestion, especially around gateway nodes (GN), can dramatically decrease the overall performance...
We consider the problem of cross-layer utility maximization subject to stability constraints for a multi-commodity wireless network where all links are sharing a number of orthogonal channels. We assume a time slotted network, where the channel gains are changing randomly from slot to slot. The optimal cross-layer network control policy can be decomposed into three subproblems: 1) flow control at...
We consider the cross-layer utility maximization problem for wireless networks. It is well known that the optimal network control policy can be decomposed in three separate subproblems: 1) flow control at the network layer, 2) routing and scheduling at the network layer, and 3) resource allocation (RA) at the medium access control and physical layers. The main contribution of this paper is a power...
In order to improve the performance of existing multicast congestion control algorithm applied to wireless networks, in this paper, a TCP Vegas-like expert-controlled multicast congestion control mechanism (VEMCC) is proposed, which uses a recently proposed TCP Vegas throughput model. In VEMCC, the network congestion state is detected according to network relative queuing delay and packet loss; the...
It is well known that TCP shows performance degradation over wired/wireless networks since TCP regards packet loss as network congestion. TCP Veno has successfully addressed this fundamental problem by proposing an end-to-end loss differentiation algorithm, which distinguishes the cause of packet loss by the number of packets in the router buffer. Unfortunately, Veno's algorithm shows very low accuracy...
One major yet unsolved problem in wired-cum-wireless networks is the classification of losses, which can be due either to wireless temporary interferences or to network congestion. The transport protocol response to losses has to be different for these two cases. If the transmission uses existing protocols like TCP, the losses will always be classified as congestion losses by the data sender, causing...
This paper proposes an attractive and efficient pricing mechanism in order to provide incentives for private wireless nodes to collaborate each others with the aim of offering an Internet public access service. Thanks to the proposed strategy, a natural extension of the wireless coverage area can be realized by the users which decide to share their resources in order to reduce their connection fee...
Nowadays Internet has become a critical part of our daily lives and an affordable Internet access, is a leading engine of economic, cultural, social and political growth. In our opinion, customer cooperation could give a boost to Internet availability and affordability, therefore, we propose an attractive and efficient pricing mechanism to give incentives to wireless users which decide to share their...
We consider the problem of cross-layer utility maximization subject to stability constraints for a multicommodity wireless network where all links are sharing a single channel. We assume a time slotted network and only one node is allowed to transmit at any given slot. The optimal cross-layer network control policy can be decomposed into three subproblems: (1) flow control at the transport and network...
Congestion control of TCP protocol will reduce the size of congestion window to insure data transmission and reduce the degree of network congestion when a packet loss event that is regarded as a symbolic event of network congestion occurs. This method can be very effective in the low BER link, but it causes a sharp reduction of data transmission performance of TCP in a high BER link such as wireless...
Transmission Control Protocol (TCP) is a reliable transport layer protocol designed having wired networks in mind. When used over wireless networks, which have more losses due to channel errors, TCP's performance degrades depending on link quality and delay. This is because TCP interprets all losses in the network as a result of congestion, which causes TCP to lower data transfer rate and reduce link...
Switching a communication path from one access point (AP) to another in inter-domain WLANs is a critical challenge for delay-sensitive applications such as voice over IP (VoIP) because communication quality during handoff (HO) is more likely to be deteriorated. To maintain VoIP quality during HO, we need to solve many problems. In particular, in bi-directional communication such as VoIP, an AP becomes...
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