Modeling TCP over selective repeat ARQ in wireless networks with non-negligible propagation delay

نویسندگان

  • Jing Zhu
  • Sumit Roy
چکیده

In this paper, we propose an analytical model for TCP over selective repeat ARQ in wireless networks, in which random loss is the primary impediment to reliable, high-speed data services. We focus on the issue of modeling RTT (round trip time) variation due to ARQ retransmission at the link layer with non-negligible propagation delay. With the proposed model, we present upper and lower bounds for TCP end-to-end throughput. Simulation with ns2 is performed to validate our analysis.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

On the performance of additive increase multiplicative decrease (AIMD) protocols in hybrid space-terrestrial networks

It is well known that TCP does not perform well in networks with large propagation delay and high link loss probability, which are typical in hybrid space-terrestrial networks. Implementing Automatic-Repeat-Request (ARQ) retransmission over satellite links in hybrid networks has been proposed to enhance TCP performance by hiding the link losses from TCP. This paper analyzes the impact of implem...

متن کامل

Analysis of link-level hybrid FEC/ARQ-SR for wireless links and long-lived TCP traffic

Since the TCP protocol uses the loss of packets as an indication of network congestion, its performance degrades over wireless links, which are characterized by a high bit error rate. Different solutions have been proposed to improve the performance of TCP over wireless links, the most promising one being the use of a hybrid model at the link level combining FEC (Forward Error Correction), ARQ-...

متن کامل

Improving End-to-End Performance of TCP Using Link-Layer Retransmissions over Mobile Internetworks

TCP does not perform well in networks with high packet error rates, such as those with wireless links, since TCP assumes network congestion to be the major cause for packet losses. Wireless losses make TCP unnecessarily initiate its congestion control mechanism which results in poor performance in the form of low throughput and high interactive delay. We investigate, through computer simulation...

متن کامل

Investigating Interactions between ARQ Mechanisms and TCP over Wireless Links

In this paper we investigate interactions between TCP and wireless ARQ mechanisms. The aim is to understand what is the best configuration of the wireless link protocol in order to guarantee TCP performance, seemingly a controversial issue. Interactions between TCP and different link layer mechanisms are evaluated by means of an analytic model, that reproduces a generic selective repeat ARQ pro...

متن کامل

Out-of-Sequence in Packet Arrivals due to Layer 2 ARQ and Its Impact on TCP Performance in W-CDMA Networks

The data transmitting service over wireless networks has been further attracted with the growth of the Internet and wireless networks. However, TCP is tuned to perform well in wired networks where the error rates are very low and packet losses occur mostly because of congestion. Therefore, it can happen that the performance of TCP is severely affected by high bit error rate characterizing wirel...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2003