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In wireless network, traditional TCP protocol has not the better solution to the problem of data loss. Then, we develop the new point to point TCP cross-layer design method (NTCP) based on RTS/CTS. NTCP divided traditional TCP protocol into transmission rate control and data integrity control, avoiding using the method of forwarding node information, use the most largely the wireless resource o The...
Fast reservation list-to-send (FRLS) medium access control (MAC) protocol is proposed to apply to wireless networks with long propagation delay. In the protocol, a central control node (CCN) is applied to allocate the channel resources of two channels, and all the nodes transmit packets over the two channels without collision. Packet train transmission mechanism ensures that a number of packets are...
Cooperative communication has been recently proposed as a powerful means to improve network performance in wireless networks. However, most existing work focuses solely on one-hop source-destination cooperation. In this paper, we propose a novel cooperative MAC mechanism that is specially designed for two-hop cooperation communications where the source node and the destination node cannot hear each...
A cross-layer scheduling algorithm that streams pre-coded H.264 video over wireless networks to multiple users is presented. The algorithm can be used with the emerging wireless standards such as IEEE 802.16 and HSDPA. Our focus is maximizing the video perceptual quality after delivery with constraint of the limited wireless resources and the delay requirements from the practical point of view. At...
With the increasing widespread use of wireless technologies, many improved TCP congestion control mechanisms used in wireless networks have been presented. Because TCP congestion control mechanism designed for fixed network are not applicable in wireless networks, we propose a modified TCP congestion control mechanism based on double windows for wireless networks in this paper. The modified mechanism...
A simple and easy-to-implement analytical model for scheduling algorithm is proposed. Packets delay can be easily calculated with this analytical model but the computational complexity is reduced more compared with other popular methods such as Laplace-Stieltjes transform or Probability Generating Function. Two theoretical analyses on the basis of the proposed model are presented. The results are...
Multi-user video streaming over wireless channels is a challenging problem, where the demand for better video quality and small transmission delays needs to be reconciled with the limited and often time-varying communication resources. This paper presents a framework for joint network optimization, source adaptation, and deadline-driven scheduling for multi-user video streaming over wireless networks...
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