Use of TCP decoupling in improving TCP performance over wireless networks

Shie-Yuan Wang*, H. T. Kung

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


We propose using the TCP decoupling approach to improve a TCP connection's goodput over wireless networks. The performance improvement can be analytically shown to be proportional to √MTU/HP_Sz, where MTU is the maximum transmission unit of participating wireless links and HP_Sz is the size of a packet containing only a TCP/IP header. For example, on a WaveLAN [32] wireless network, where MTU is 1500 bytes and HP_Sz is 40 bytes, the achieved goodput improvement is about 350%. We present experimental results demonstrating that TCP decoupling outperforms TCP reno and TCP SACK. These results confirm the analysis of √MTU/HP_Sz performance improvement.

Original languageAmerican English
Pages (from-to)221-236
Number of pages16
JournalWireless Networks
Issue number3
StatePublished - 1 May 2001


  • Performance
  • TCP
  • Wireless networks


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