24th International Conference on Distributed Computing Systems, 2004. Proceedings. (2004)
Hachioji, Tokyo, Japan
Mar. 24, 2004 to Mar. 26, 2004
Hiroshi Inamura , NTT DoCoMo, Inc.
Osamu Takahashi , NTT DoCoMo, Inc.
Hirotaka Nakano , NTT DoCoMo, Inc.
Taro Ishikawa , NTT DoCoMo, Inc.
Hiroshi Shigeno , Keio University
We study the impact of the ARQ mechanism in W-CDMA, a 3rd generation cellular wireless network technology, and analyze the trade-off between delay-jitter suppression and link utilization. We show how to find the TCP and link ARQ parameters that yield optimum overall performance; simulations and emulation confirm their effectiveness. Many cellular links have small physical frame sizes and relatively high frame loss rates. Relying entirely on just TCP over those network results in a performance degradation. Using TCP with link-layer error recovery can increase end-to-end performance. Therefore link-layer and end-to-end recovery can co-exist; this can also lead to inefficient interaction between the ARQ protocols in the two layers. This paper characterizes TCP behavior over the W-CDMA wireless link and introduces optimal parameters using simulator and emulator of the link ARQ mechanisms.
H. Nakano, H. Shigeno, O. Takahashi, H. Inamura and T. Ishikawa, "Impact of Layer Two ARQ on TCP Performance in W-CDMA Networks," 24th International Conference on Distributed Computing Systems, 2004. Proceedings.(ICDCS), Hachioji, Tokyo, Japan, 2004, pp. 284-291.