Research - TCP/IP over Air Links - What's New!

Literature Scanning - A List, Temporarily  (ls -alt)

• X. Wu, I. Nikolaidis. Self-similarity of TCP/IP traffic microflows and their aggregations. Proc. of IC'2001, 2001.
  The Hurst parameter for aggregate and individual TCP flow with DropTail or RED gateway policy and various buffer size. 
  With enough buffer space, we demonstrate that TCP congestion avoidance mechanism alone can produce LRD in the TCP traffic. 
  The (DropTail loss interval) distribution appears to be heavy-tailed, significantly different from an exponential distribution. ... Unlike Droptail, the dropping intervals for RES approximate a normal distribution.
• K. Park, S. Park, D. Park. Enhancing TCP performance over wireless network with variable segment size. Proc. PDPTA'01,
• I.F. Akyildiz, G. Morabito, S. Palazzo. TCP-Peach: a new congestion control scheme for satellite IP networks. IEEE/ACM Trans. on Networking, 9(3)::307-321, 2001.
• C. Zhang, V. Tsaoussidis. TCP-Real: improving realtime capabilities of TCP over heterogeneous networks. Proc. of NOSSDAV'01, June 25-26, 2001.
  ... a TCP-compatible and friendly protocol which abolishes three major shorfalls of TCP for reliable multimedia applications over heterogeneous networks (i) ineffective bandwidth utilization [TCP loss nature?], (ii) unnecessary congestion-oriented responses to wireless link errors, and (iii) wasteful window adjustments over asymmetric, low-bandwidth reverse path. ...
  The basic idea of TCP-Real is to incorporate into TCP the concept of ``wave'' from WWP (Wave-and-Wait Protocol) without changing the sematics of TCP and without violating the established standards of AIMD control during congestion. 
  receivered-based flow and congstion control by exchanging cwnd in packet header (wave-level)
  simulated in x-kernel
• J. Liu, S. Singh.  ATCP: TCP for mobile Ad Hoc networks. IEEE Journal of Selected Areas in Communications, 19(7):1300-1315, 2001.
  ... we present an approach where we implement a think layer between Internet protocol and standard TCP that corrects these problems and maintains high end-to-end TCP throughput. We have implemented our protocol in FreeBSD...
  ... problems with TCP in Ad Hoc networks: effect of a hight BER, effect of route recomputation, effect of network partition, effect of multipath routing ... the approach we propose in this paper utilizes network layer feedback ([Destination Unreachable ICMP message] from intermediate hops) to put the TCP sender into either a persist state, congestion control state [triggered by ECN?], or retransmit state [assume BER is the *default* source for packet losses]. ...
• A. Lahanas, V. Tsaoussidis. Behavior of TCP-probing with handoffs. Proc. IC'01, 1:325-331, 2001.
  [experiment in x-kernel. compare: tahoe, reno, tcp-probing, metric: time to transmit application message, overhead due to extra transmissions, with 0.5/1sec rendezvous time and handoff every 10/5/3 seconds]
  ... TCP-probing: probing cycle with header-only TCP segment; Immediate Recovery (IR) if both sample in probing smaller than best rtt...
• J. Pan, J. W. Mark, S. X. Shen. End-to-end TCP performance with local retransmissions. Proc. IC'01, 1:332-338, 2001.
• M. Methfessel, P. Langendoerfer, H. Frankenfeldt, I. Babanskaja, I. Matthaei, R. Kraemer. Optimzing the cooperation between TCP and wireless MAC. Proc. IC'01, 1:339-345, 2001.
• G. Hasegawa, M. Murata. Survey on fairness issues in TCP congestion control mechanisms. IEICE Trans. on Communications, E84-B(6):1461-1472, June 2001.
  ... survey the fairness issues for with different propagation delay and access bandwidth on drop-tail/RED/ECN routers, Vegas, DRR/FRED scheduling, UDP background traffic, ABT/SBT buffer allocation. Simulation with ns2 and a access-bottleneck topology. ...
• H. Koga, Y. Hori, Y. Oie. Performance comparison of TCP implementations in QoS provisioning networks. IEICE Trans. on Communications, E84-B(6):1473-1479, June 2001. 
  ... experimental work with ns2 on: TCP Reno/NewReno/SACK when TCP only, TCP with 1 UDP, and TCP with multiple UDPs, as well as Reno/SACK coexistence. ...
• H. Obata, K. Ishida, J. Funasaka, K. Amano. Evaluation of TCP performance on asymmetric network using satellite and terrestrial links. IEICE Trans. on Communications, E84-B(6):1480-1487, 2001.
  ... deriving TCP throughput formula with considerations on slow-start (small data) and slow-start+congestion avoidance (large data) over asymmetric links, in the situations when rtt is maximum, time to send segments in a window is maximum, and time to return acks for a window is maximum. compare the formula with ns2 simulation and real experiments. ...
• H. Obata, K. Ishida, J. Funasaka, K. Amano. TCP performance analysis on asymmetric networks composed of satellite and terrestrial links. Proc. IEEE ICNP'2000, 199-206, 2000
  [rtt is maximum, a(n) is maximum - a slow forward channel, q(n-1) is maximum - a slow backward channel, compared with ns and emulator results]
• K. Chandran, S. Raghunathan, S. Venkatesan, R. Prakash. A feedback-based scheme for improving TCP performance in ad hoc wireless networks. IEEE Personal Communications Magazine, 8(1):34-49, 2001

...  To overcome this problem, a feedback scheme is proposed so that the source can distinguish between a route failure and network congestion. When a route is disrupted, the source is sent a Route Failure Notification packet, allowing it to invalidate its timers and stop sending packets. When the route is reestablished, the source is informed through a Route Reestablishment Notification packet, upon which it resumes packet transmissions. ...
• Z. Kostic, X. Qiu, L. Chang. Impact of TCP/IP Header Compression on the Performance of a Cellular System. Proc IEEE WCNC'2000, 2000

... Performance improvements achievable by header compression are investigated. Simulations have been designed for an EDGE-Iike cellular system. ...
• J. Dimarogonas, M. D. Snyder, Y. Barsoum. TCP Performance over a contention based wireless multi-hop network. Proc. IEEE WCNC'2000, 2:538-542, 2000

In this study we analyze the performance of TCP over a simulated multi-hop wireless network, based on network topology and background traffic derived from field experiments. The channel access is a Multiple Access Collision Avoidance (MACA) type protocol, with link level acknowledgements, and a network topology based on cluster formations that include a cluster  head  through which inter-cluster traffic is transmitted. We measure the throughput for the cases of one, two and three hops, as well as the effect it has on the background traffic completion rate. We also investigate the performance of multiple file transfers performed in parallel. Finally we investigate different TCP parameters in an attempt to optimize the performance.
• C. Parsa, J.J. Garcia-Luna-Aceves. Differentiating congestion vs. random loss: a method for improving TCP performance over wireless links. Proc. IEEE WCNC'2000, 1:90-93, 2000

... TCP Santa Cruz easily identifies a congestive loss as one which is preceded by an increase in the bottleneck queue length. A wireless loss, on the other hand, can be identified as a random loss that is not preceded by a buildup in the bottleneck queue. ...
• F. Peng, S. Cheng, J. Ma. An effective way to improve TCP performance in wireless/mobile networks. Proc. IEEE/AFCEA EUROCOM'2000, 250-255, 2000

... As routers will still have to rely on packet drops as indications of congestion, we propose to add Wireless-ECN just upon the first packet loss occurs. ...
• K.L. Gray, D.L. Noneaker. The effect of adaptive-rate coding on TCP performance in wireless communications. Proc. IEEE/AFCEA EUROCOM'2000, 233-237, 2000

... The throughput of the TCP connection is determined by simulation for a time-varying, two-state wireless link and for three coding schemes: a fixed-rate extended (32,16) Reed-Solomon code, a fixed-rate extended (32,24) Reed-Solomon code, and an adaptive-rate coding system using both of the Reed-Solomon codes. ...
• F. Anjum, R. Jain. Performance of TCP over lossy upstream and downstream links with link-level retransmissions. Proc. IEEE ICON'2000, 3-7, 2000

... Unlike many previous studies, which rely on simulation, we develop an analytical model for calculating TCP thoughput; unlike all previous analytical studies, we do not ingore the possibility of acknowledgment packet (ACK) being lost on the reverse link from the wireless receiver to the base station.
• Arpaci, M.; Uzunalioglu, H.; Copeland, J.A. TCP performance over heterogeneous networks. Proc. 25th IEEE LCN, 536-541, 2000

In future IP network, nodes supporting new congestion avoidance mechanisms like RED and ECN are going to exist together with nodes carrying traditional drop tail buffers. We study the performance of a set of TCP flows passing through two congested node in such a heterogeneous network. Our results show that unequal hop behavior (in the form of RED and drop tail) in the congestion points can increase the bias against TCP flows passing through multiple congested nodes...
• Xiaoning He. TCP performance analysis of a DMT-based ADSL system. Proc. 25th IEEE LCN, 439-440, 2000

This paper examines the performance of TCP, the Internet data transport protocol, over a DMT based ADSL system. Specifically, we attempt to develop a basic understanding, using analysis and simulation, of the properties of TCP over an ADSL system. Following key results are obtained. First, high error probability leads to significant throughput deterioration. Second, there is an optimal data rate which will maximize the TCP throughput under constraint energy. ...
• West, M.; McCann, S. Improved TCP performance over long-delay and error-prone links. Proc. IEE Seminar on Satellite Services and Internet, 8:1-9, 2000

... Work undertaken by Roke Manor Research Ltd has resulted in the development of enhancer technology that can dramatically improve throughput and efficiency. This paper describes the work undertaken and compares the results with standard TCP and TCP with satellite-friendly options. The problem of using TCP over long latency links is described and connection splitting is introduced as a solution to this problem. The various issues that are raised by the introduction of enhancers into the end-to-end path are then discussed. ...
• Chiewon Lee; Jongwook Jang; Park, E.K.; Makki, S. An analysis of the performance of TCP over IEEE 1394 home networks. Proc. 8th IEEE ICCCN, 199-203, 1999.

... We have validated a TCP model over a high-speed home network environment, investigated the throughput behavior of TCP over IEEE 1394 home networks, and evaluated a potential solution for high performance of TCP over IEEE 1394 home  networks. The simulation model has produced several interesting results in the performance of TCP over IEEE 1394 home networks.