A Proxy Architecture to Enhance the Performance of WAP 2.0 by Data Compression

Abstract

<p>This paper presents a novel proxy architecture for wireless application protocol (WAP) <math alttext="$2.0$"> <mrow> <mn>2.0</mn> </mrow> </math> employing an advanced data compression scheme. Though optional in WAP <math alttext="$2.0$"> <mrow> <mn>2.0</mn> </mrow> </math>, a proxy can isolate the wireless from the wired domain to prevent error propagations and to eliminate wireless session delays (WSD) by enabling long-lived connections between the proxy and wireless terminals. The proposed data compression scheme combines content compression together with robust header compression (ROHC), which minimizes the air-interface traffic data, thus significantly reduces the wireless access time. By using the content compression at the transport layer, it also enables TLS tunneling, which overcomes the end-to-end security problem in WAP 1.x. Performance evaluations show that while WAP 1.x is optimized for narrowband wireless channels, WAP <math alttext="$2.0$"> <mrow> <mn>2.0</mn> </mrow> </math> utilizing TCP/IP outperforms WAP 1.x over wideband wireless channels even without compression. The proposed data compression scheme reduces the wireless access time of WAP <math alttext="$2.0$"> <mrow> <mn>2.0</mn> </mrow> </math> by over <math alttext="$45\%$"> <mrow> <mn>45</mn><mo>&#37;</mo> </mrow> </math> in CDMA2000 1XRTT channels, and in low-speed IS-95 channels, substantially reduces access time to give comparable performance to WAP 1.x. The performance enhancement is mainly contributed by the reply content compression, with ROHC offering further enhancements.</p

RObust Header Compression (ROHC) Performance for Multimedia Transmission over 3G/4G Wireless Networks

“…In particular, ROHC incorporates elements from ROCCO and Adaptive Header Compression (ACE) [18], which may be viewed as preliminary forms of ROHC. The ROHC impact on packet loss and delay has been studied in [19][20][21][22][23][24].…”

An Agent-Based Framework for Mobile 2.0

“…Hence, the second method, which is agent-based framework, is proposed, in which mobile devices exchange data and services with the Internet via Mobile 2.0 Agent. Pioneering works [3][4][5][6][7] propose the agent with different architectures or functions. In the paper, we propose an agent-based framework with agent as centralized component in the integrated network.…”