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The steadily growing deployment of resilience-critical Internet services is leading to an increasing number of Multi-Homed network sites. Asymmetric Digital Subscriber Lines (ADSL) are an inexpensive way to add a secondary Internet access connection. With the development of Multi-Path Transport Layer protocols - like Multipath TCP (MPTCP) and the Stream Control Transmission Protocol (SCTP) furnished...
Delivering desired QoS to the applications is one of the most important challenges in next generation networks. Designing efficient queue management in midway nodes leads to improvement in NGN efficiency. This paper presents fair Efficient active Queue Management (EQM) mechanism for congestion avoidance and control in next generation networks. Proposed AQM mechanism uses instantaneous queue length...
Multipath Transport Protocols like Stream Control Transmission Protocol (SCTP) and Multipath TCP (MPTCP) support concurrent usage of multiple paths between the end users. In this paper we investigate the flow division at the source among multiple paths as an optimization problem. We also introduce link-by-link error recovery scheme and compare the system performance when the traditional end-to-end...
Under the background of TDD mode and LTE-Advanced scene, in this paper, we combine physical network coding with relay technology in order to make physical network coding-decode and forward (PNC-DF) together with physical network coding-amplify and forward (PNC-AF) transfer mode can be used to improve network throughput by using interference. Because of the ability to listen to the multi-user relay...
New Multi-Homed Transport Protocols like Stream Control Transmission Protocol (SCTP) have the potential to be modified for supporting concurrent multi-path multi-homed connections between the end users. This kind of usage will require optimized flow division among the candidate paths in order to utilize the network resources efficiently. This paper considers the problem of optimizing flow division...
Currently, more and more research work has been done for the optimization of TCP performance in wireless networks. The majority of these schemes proposed are trying to optimize the system within the single layer. Obviously, jointly considering the interaction between transport layer and other layers, it may bring the improvement for TCP performance. In this paper, we propose a novel approach using...
Based on the analysis of TCP performance of over the two ways of IEEE 802.11 DCF (RTS/CTS and CSMA/CA), TCP flows becomes unstable when WLAN is in high load. In this paper, we propose a novel backoff algorithm for IEEE 802.11 DCF named as ACWB (adaptive contention window backoff) with cross-layer optimization. Its basic idea is to dynamically adjust the size of the contention window by the estimation...
The problem how to improve the quality of server(QoS) of the heterogeneous network must be studied and solved, for long round trip times (RTTs), not negligible packet error rates (PER), and downlink-uplink asymmetry, etc. Posing new challenges to the QoS given by transmission control protocol (TCP). the paper proposes a Diff-selective(diff-sel) policy, which can solve the problem by selecting different...
Return network traffic (from servers to clients) in thin-client systems is modeled as a mixture of interactive data flows corresponding to keystrokes and bulk data flows related to screen updates. Users are very sensitive to delay and jitter of the former flows. Thus our goal is to minimize the latency of interactive data transfer without increasing latency of bulk data transfer. Through simulation...
Next generation wireless networks will interwork hence combine resources of the available heterogeneous networks for connection support. Mobility across these networks will be inevitable. Thus, to support seamless connection migration between the networks, seamless handover is a necessary requirement. One of the requirements for ensuring seamless handover is the reduction of the delay that occurs...
To deal with increasing number of the mobile devices and applications in the next generation all-IP wireless networks, effective mobility management has become a critical problem. In this paper, we propose a new mobility management architecture, named I-HSIP, which integrates host identity protocol (HIP) and session initiation protocol (SIP) to handle TCP and UDP applications respectively. In this...
In this paper, we described the correlations between user perceived Web response time and the asymmetrical link characteristics. Our study demonstrated that the HTTP compression strongly affects the Web response time when uplink resources are limited. The constraints on uplink degrade Web performance seriously. In addition, we also found that it is possible to reduce Web response time through cross...
The transmission control protocol (TCP) provides reliable transport services between end-points and enjoys predominant share as carrier of data traffic over Internet. Last mile wireless links have challenged TCP effectiveness because of fluctuations in link quality and relatively low data rates. These fluctuations cause major performance degradation in terms of reduced throughput, increased retransmission...
The active beacon based network monitoring tries to estimate the transfer delay of a link e by the difference of round-trip times from a beacon host to the two endpoints of e. For efficiency, we consider the problem of placing a minimum set of beacons to monitor all links of a given TCP/IP network e.g., the Internet. We propose an idea called L-beacon, i.e., a beacon can monitor only links within...
Network mobility (NEMO) basic support protocol is an extension mobile IPv6. NEMO signaling is performed with extended mobile IPv6 messages. NEMO basic support protocol is concerned with managing the mobility of an entire network, it provides for devices or vehicles which move to another point of attachment to the Internet. NEMO can maintain sessions established nodes between the mobile network and...
Notice of Violation of IEEE Publication Principles"Asymmetric Path Optimization In Mobile Multi-homed SCTP Multimedia Transport"by Jiemin Liu, Hongxing Zou, Jingxin Dou, and Yuan Gaoin the Proceedings of the International Conference on Intelligent Information Hiding and Multimedia Signal Processing (IIH-MSP/2008) pp 496-499After careful and considered review of the content and authorship...
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