Wireless Application Protocol

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Wireless Application Protocol WAP
?????????????????????????? WAP Forum
?????????????????????????????????
?????????????????? ??????????? PDA(Personal
digital assistants ???????????????????????????????
????????????????????????????????????? Web WAP
??????????????????????????????????????????????????
??????????????????????????????????????????????????
??????????? IP XML HTML ??? HTTP
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WAP Protocol Stack
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• ?????????? base on ??????? WWW
• ????????? markup languages , Wireless Markup
  language ??????? XML
• ??? browser ????????????? ????????????????????????
  ????????????????????????????
• lightweight communications protocol stack
• ??????????????????????? Wireless telephony
  application(WTAs)

WAP Programming Model
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WAP Infrastructure
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Wireless markup language WML ????????????????????
content ??????????????????? presenting
??????????????????????????? ????????????
??????????????????? ???????????????????????
???????????????????????????????? WML
???????????????????????????????
????????????????????? ??? smart phone
???????????????
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????????????? WML ?????????? - ???????????????????
??????????????? ?????? commands
??????????????????????????????????????????????????
??? - Deck/card organizational ?????? WML
???????????????????????????? ?????????????????????
???????????????????? cards ?????????? (navigate)
???????????(moving back) ????????????????? cards
??????????????????????????????????????????????????
?????? (???? ?????????????????????) WML desk
?????????? HTML page ????????????? Web
address(URL) ???????????????????? content -
???????? navigation ??????? card ??? deck WML
???????????????????????? (handing)
????????????????????????? executing scripts
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WML Script ??????????????????? Java Script
????????? - ??????????????????????????????????????
???????? content server - Access decive
facilities and peripherals - ?????????????????????
?? introduction round trip ????? origin server
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?????????? WML Script ???????? - JavaScript-based
scripiting language WML Script ????????????????
Java Script ???????????????????????????????? -
Proceddural logic WML Script ????????????????????
?? Wireless Application Environment (WAE) -
Compiled implementation WML Script
?????????????? ??? code ?????????????????????????
- Integeated into WAE WML Script ?????????????
WML brower ??????????????????????????????? WML
??? WML Script - Efficient extensible library
support WML Script ????????????
??????????????????????????????????
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Wireless Application Environment ????????????
tool ??? format
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- WAE User agent ??????????????????????????????
??????????????????????????????? user - Content
generators ??????????????? server ?????? format
??? ???????????? mobile terminal - Standard
content encoding ????????????????? WAE
agent ?????????? Web content - Wireless telephony
applications (WTA) ??????????????????????????????
????????????????????????????? mobile ??????????
microbrower ??????????????????????????????????????
????????
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Wireless Session Protocol - WSP ???? application
??????????????????????????????????? 2 ????
??????????????? connection-oriented ???? WTP
transport protocol ??????????????????
connectionless ????WDP - WSP ?????????? HTTP
??????????????????????????????????????????????????
????????? - ???????????????????? request ???
reply ?????????? WML, WML Script ???? image ???
header - WSP ??????????????????????????? server
??? server ??? request ????? client device
???????????? broadcast massage