Wireless Application Protocol - WAP Nie Ping & Zhou Hu - - PowerPoint PPT Presentation

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Wireless Application Protocol - WAP Nie Ping & Zhou Hu - - PowerPoint PPT Presentation

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Wireless Application Protocol - WAP Nie Ping & Zhou Hu 10.2.2005 T-110.456 WAP Lecture 1 Content WSP WTP WDP Negative voice and Evolution WAP future 10.2.2005 T-110.456 WAP Lecture 2 WAP stack HTML JavaScrip

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10.2.2005 T-110.456 WAP Lecture 1

Wireless Application Protocol - WAP

Nie Ping & Zhou Hu

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10.2.2005 T-110.456 WAP Lecture 2

Content

  • WSP
  • WTP
  • WDP
  • Negative voice and Evolution
  • WAP future
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10.2.2005 T-110.456 WAP Lecture 3

WAP stack

HTML JavaScrip HTTP TLS-SSL TCP/IP

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10.2.2005 T-110.456 WAP Lecture 4

WSP

  • WSP – Wireless Session Protocol

– WSP is binary form of HTTP offering HTTP 1.1 functionality – Long-lived session, session suspend/resume – Optimized for low-bandwidth and long latency. – Push functions – Asychronized requests – Encoding: the number 0x87A5 (1000 0111 1010 0101) is encoded in three octets.

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10.2.2005 T-110.456 WAP Lecture 5

WSP

  • WAP programming model
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10.2.2005 T-110.456 WAP Lecture 6

WTP

  • WTP – Wireless Transaction Protocol

– Lightweight transaction protocol – Message-oriented, not stream oriented, unlike TCP – Transaction ID as Identification – Three classes of service

  • Unreliable one way
  • Reliable one way
  • Reliable two way
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SLIDE 7

10.2.2005 T-110.456 WAP Lecture 7

WDP

  • WDP – Wireless Datagram Protocol
  • The WDP protocol operates above the data capable

bearer services supported by any available network.

  • Datagram transport service, a UDP like interface.
  • Multiplexing and Demultiplexing
  • Port number addressing
  • Segmentation and reassembly (optional)
  • Error detection
  • As a general datagram service, WDP offers a consistent

service to the upper layer protocol (Security, Transaction and Session).

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SLIDE 8

10.2.2005 T-110.456 WAP Lecture 8

Negative voice - Mohsen Banan

  • Limited distribution
  • Door open? entry fee $27,000
  • Reinvent wheels,analog with WWW, binary form,

not real invention but adoption or customization

  • WAP is not RFC, global open and accepted.
  • Interoperability: WTP’s SAR
  • Efficiency: mobile browsing limited experience
  • Alternative? LEAP: The Lightweight and Efficient

Application Protocol

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10.2.2005 T-110.456 WAP Lecture 9

WAP future

  • 3G brings more bandwidth, a relief of WAP
  • Wireless profiled TCP/IP. Networks speak ”IP”.
  • Fast growing and potential Asian market.
  • Advanced service: feature rich add value service.
  • Protect 2.5G operators’ investment
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10.2.2005 T-110.456 WAP Lecture 10

Evolution

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10.2.2005 T-110.456 WAP Lecture 11

Evolution

  • Mobile Browsing

– HTML enabled: – XHTML enabled: – WAP enabled: almost all

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10.2.2005 T-110.456 WAP Lecture 12

Reference

  • Interworking with TCP/IP, Douglas E.Comer
  • WAP Forum, OMA now. www.wapforum.org
  • Content Networking In The Mobile Internet, Mr.Sudhir Dixit and Mr.Tao Wu
  • Wap trap and LEAP, Mohsen Banan
  • http://electronics.howstuffworks.com/wireless-internet3.htm

http://www.nordicwirelesswatch.com/wireless/story.html?story_id=3276 http://compnetworking.about.com/od/wirelesswap/l/aa123000a.htm http://www.vbxml.com/wap/articles/wapart1.asp http://www.thefeature.com/article?articleid=12400 http://www.palowireless.com/wap/tutorials.asp http://www.palowireless.com/wap/forums.asp http://www.iec.org/online/tutorials/wap/topic05.html http://www.visualtron.com/wap_topic05.htm http://www.mobileinfo.com/WAP/future_outlook.htm

  • http://www.ccp14.ac.uk/solution/wap/wap_trap.html
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SLIDE 13

10.2.2005 T-110.456 WAP Lecture 13

WAP

Thank You