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In practical radio transmissions, channel capture is a dominating factor that affects wireless network performance. The capture effect can occur in wireless network when packets arrive with different powers. Packets with high power can effectively swamp low power packets, such that they are received successfully, when otherwise a collision would have occurred. We present a vehicular network performance-prediction...
Future wireless mobile broadband systems will address the demand of high data rate due to the explosive growth of mobile Internet traffic. Deploying a layer of dense small cells with low transmit power is an effective means to meet the data rate requirement. As one of the prospective solutions to future mobile broadband systems, TDD-based LTE-Hi aims to provide higher performance in hotspots and indoor...
Quality of Service (QoS) and queue management are critical issues for broadcast scheme of IEEE 802.11 systems in Vehicular Ad hoc Networks (VANETs). However, existing 1-dimensional models of broadcast scheme in VANETs are unable to capture the complete QoS performance and queueing behavior due to the lack of an adequate finite buffer model. We present a 2-dimensional Markov chain that integrates the...
With the development of wireless access technology, many hosts have the ability to attach to multiple networks via Multi-InterFace(MIF). In order to communicate via multiple interfaces simultaneously and select a suitable one for each session, per-application preferences or sophisticated policy managers is implemented in some hosts, both of which are configured by users or controlled externally. Therefore,...
There are two causes of network congestion: one is the lack of network resources, and the other is the irrational allocation of network resources. While traditional congestion control methods such as rate control, window mechanism, queue control, etc. can be applied to solve the congestion problem, but for the later congestion case, the fundamental solution is to make more effectively use of the network...
At present, the number of Internet subscribers accessing Internet through mobility terminal equipment and other new types is gradually increasing, which shows it's important to develop mobility management protocols in order to provide mobility support for the subscribers. Several protocols were proposed to support IP mobility in the IETF, such as MIPv6, HMIPv6, FMIPv6 and F-HMIPv6. Some performance...
Peer-to-peer file sharing applications, which enable peers to establish multiple TCP connections between other peers to transfer data, pose new challenge to congestion control. Since conventional congestion control only aims to make each of those connections TCP-friendly, self users can increase the number of connections to grab a large share of the bandwidth, introducing more congestion and degrading...
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