????????GPRS??÷??????????(General Packet Radio Service)???????д??????????GSM??????????齻??????????2.5G??????????????????????????171.2kb/s

????????UMTS UMTS(Universal Mobile Telecommunication System)??????????????????д????????????Э??(ETSI)????UMTS????????????????ITU?????IMT-2000Э??????????ITU IMT-2000????????????UMTS???ITU????????????????????????????????????????????????????????????????GSM??IP??????????2Mb/s???????????

????????CDMA(????????3G??CDMA)????????????д???????????3G????????????????3??3G??????CDMA??????????WCDMA??CDMA2000??TD-SCDMA.??????????????????????TD-SCDMA???й????(???????)?????ITU??3GPP??????????У?WCDMA??CDMA2000??FDD??????TD-SCDMA??TDD??(???FDD-??????????????????ν??????;TDD-??????????????????Σ??????????????С?)

????WAP??WML WAP?????????Э??(Wireless Application Protocal)???????д??????????????????????Э???????????????綽??С????????????豸??WAP??????????????????????????GSM??GPRS??CDMA???

????WML?????????????(Wireless Makeup language)???????д?????WAP????????????????WML??????Internet?????

????I-mode ?? CHTML i-mode?????????(NTT)??????DoCoMo??????г???????????????????????????????????(???????)???????????????I-mode ?? WAP ??????????????I-mode ??????????CHTMLд??????????е???????????????????????????;??WAP??????WML?????е????????????????WML?????WAP????á?CHTML(Compact HTML)HTML???????塣??HTML????????

????????(BlueTooth)

?????????????????豸????????(?????10m???)??????缼???????????????綽??PDA????????????????????????????????豸???????????????????????????IEEE802.15.?????? 2.4GHz ??????????1Mb/s(???????????????????????????10???????????????????????????????????)

????Wireless LAN??????????????????????????????????IEEE802.11??IEEE802.11b ??IEEE802.11a.????802.11b ??????2.4GHz???????????11Mbps.??802.11a??????5GHz???????????????54Mb/s .????????Wireless LAN?????????e???

????HomeRF HomeRF??????????????????????????????IEEE802.11??DECT???????????????HomeRF??????????????????????2.4GHz???????HomeRF??????1??2Mb/s??δ????????10Mb/s.——————————-SyncML SyncML????????????????????????Э?顣????SyncML???????豸????????????????????????????Ericsson?? IBM?? Lotus?? Matsushita??Motorola?? Nokia?? Palm?? Psion??Starfish Software????????Э??????????

????VoiceXML VoiceXML(Voice eXtensible Markup Language)??W3C????????????????(XML)????????????????????????????????????????????????????????????VoiceXML??????????Web???????????????????????????????????????????????綽??????????????????