Kee Hyun Park , Yang Mo Synn , Hong Taek Ju

The KIPS Transactions:PartC, Vol. 11, No. 3, pp. 379-386, Jun. 2004
10.3745/KIPSTC.2004.11.3.379,   PDF Download:

Abstract

The WAP 2.0 system is a newly proposed wireless communication system by the WAP Forum for interoperability across Internet environment and the system takes charge of communication between WAP terminals and existing Origin Web servers. The purpose of this paper is ① to construct a WAP 2.0 proxy proposed by the WAP Forum and ② to improve the WAP proxy in order to increase communication efficiency between wired and wireless communication objects. The improved WAP proxy constructed in this study provides links between wired and wireless communication environments using the split-TCP concept. However, unlike the split-TCP connection, The improved WAP proxy maintains TCP´s end-to-end semantics and reduces overhead by avoiding operations as much as possible on the upper protocol layer. In addition, The improved WAP proxy supports SACK(Selective Acknowledgement) option and Timestamp option for speedy re-transmission which leads to reduction of performance degradation. After constructing the improved WAP proxy under Linux environment, experiments have been taken. The experimental results show that, compared with the experiments when a WAP proxy proposed by the WAP Forum is used, both data transmission delay time and data transmission size decrease to show that communication efficiency is increased. In particular, as packet missing ratio increases, data transmission size decreases, which demonstrates that the improved WAP proxy is very effective for performance improvement in wireless communication environment.

Statistics
Cite this article