ããç®ä»ããéåæåºï¼æ¯æ对å°ççéåæ¹åçæç¥ï¼ç®å许å¤ç设å¤ä¸é½å®è£
æéåæåºè¯çã
ããç¼è¾æ¬æ®µåºç¨ææºéåæåºææ¯ããå©ç¨åçµæåºå®ç°ï¼ç®åæ¥è¯´æ¯æ¯æµéå
é¨ä¸çéç©ï¼éç©ååçµçåæä¸ä½ï¼éåæ£äº¤ä¸¤ä¸ªæ¹åçåå大å°ï¼æ¥å¤å®æ°´å¹³æ¹åã硬çéåæåºææ¯ç®ä»ããéåæåºè£
ç½®å
æ¬æåºå¨ãå¤çå¨åæ§å¶å¨ä¸ä¸ªé¨åãæåºå¨è´è´£ä¾¦æµåå¨å¨çç¶æï¼è®¡ç®åå¨å¨çéåå é度å¼ï¼å¤çå¨å对å é度å¼æ¯å¦è¶
åºå®å
¨èå´è¿è¡å¤æï¼èæ§å¶å¨åè´è´£æ§å¶å°ç£å¤´éå®æè
éæ¾åºå®å
¨åæ³åºãä¸æ¦æåºå¨ä¾¦æµå¹¶ç»å¤çå¨å¤æå½åçéåå é度è¶
è¿å®å
¨å¼ä¹åï¼æ§å¶å¨å°±ä¼éè¿ç¡¬ä»¶æ§å¶ç£å¤´åæ¢è¯»åå·¥ä½ï¼å¹¶å¿«éå½ä½ï¼éå®å¨ä¸æçç£å¤´åæ³åºãè¿ä¸ç³»åå¨ä½ä¼å¨200毫ç§å
å®æãå½æåºè£
ç½®æ¢æµå°å é度å¼æ¢å¤å°æ£å¸¸å¼èå´ä¹åï¼äº§åæä¼æ¢å¤å·¥ä½ã
ããéåæåºå¨ç§»å¨åå¨ä¸åºç¨ï¼ç§å¦å®éªè¯æï¼ä¸è¬åå¨å¨å¨ä¸éçµçæ¶åï¼æéæ§æ1000Gï¼èéçµå·¥ä½ä¹åï¼æéæ§ä¸è¶³200Gï¼é常轻微çç£ç¢°é½æå¯è½é æç£çåéãå æ¤ï¼åªæææç¡®ä¿å·¥ä½ç¶æä¸ç产åå®å
¨ï¼æè½æç»ç¡®ä¿å
¶ä¸çæ°æ®èµæå®å
¨ã
ããéåæåºææ¯âï¼å©ç¨éåå é度åçï¼ä¸æ¦ä¾¦æµå°æå¤ï¼è½å¨æè½çç¬é´å°ç£å¤´æ¤è³å®å
¨åæ³åºï¼å¯ä½¿ç§»å¨åå¨å¨å®å
¨æ§è½æå500%以ä¸ï¼è¾¾å°çè³è¶
è¶æ çµç¶æä¸çæéæ°´å¹³ï¼ä»æ ¹æ¬ä¸ç¡®ä¿äºå¤äºå·¥ä½ç¶æä¸ç移å¨åå¨å¨çæéæ§è½ï¼ä»èä¿è¯äºå¨ä»»ä½ç¶æä¸çæ°æ®ä¿¡æ¯å®å
¨
ããè¹æå
¬å¸ç å¶äºç¬¬ä¸å°éåæåºæºåå
¶ä»åºç¨ããéåæåºææ¯å¨å
¶ä»æ¹é¢ä¹å¾å°äºåºç¨ãä¾å¦ï¼æºè½çµå¨è½¦ã游ææºãçµèçç
ããç¼è¾æ¬æ®µåçããæ¹åæåºå¨çå®ç°é çæ¯iPhoneçå
ç½®å é计ãiPhoneæéç¨çå é计æ¯ä¸è½´å é计ï¼å为Xè½´ãYè½´åZè½´ãè¿ä¸ä¸ªè½´æææçç«ä½ç©ºé´è¶³ä»¥ä¾¦æµå°ä½ å¨iPhoneä¸çåç§å¨ä½ãå¨å®é
åºç¨æ¶é常æ¯ä»¥è¿ä¸ä¸ªè½´ï¼æä»»æ两个轴ï¼æææçè§åº¦æ¥è®¡ç®iPhoneå¾æçè§åº¦ï¼ä»è计ç®åºéåå é度çå¼ã
ããéè¿æç¥ç¹å®æ¹åçæ¯æ§åæ»éï¼å é计å¯ä»¥æµéåºå é度åéåãiPhoneçä¸è½´å é计æå³çå®è½å¤æ£æµå°ä¸ç»´ç©ºé´ä¸çè¿å¨æéåå¼åãå æ¤ï¼å é计ä¸ä½å¯ä»¥æ示æ¡æçµè¯çæ¹å¼ï¼æèªå¨æ转åè½ï¼ï¼èä¸å¦æçµè¯æ¾å¨æ¡åä¸çè¯ï¼è¿å¯ä»¥æ示çµè¯çæ£é¢æä¸è¿æ¯æä¸ã
ããå é计å¯ä»¥æµééåå¼åï¼gï¼ï¼å æ¤å½å é计è¿åå¼ä¸º1.0æ¶ï¼è¡¨ç¤ºå¨ç¹å®æ¹åä¸æç¥å°1g.å¦ææ¯éæ¢æ¡æiPhoneè没æä»»ä½å¨ä½ï¼é£ä¹å°çå¼å对å
¶æ½å çå大约为1g.å¦ææ¯çºµåç«ç´å°æ¡æiPhoneï¼é£ä¹iPhoneä¼æ£æµå¹¶æ¥åå¨å
¶yè½´ä¸æ½å çå大约为1gãå¦ææ¯ä»¥ä¸å®è§åº¦æ¡æiPhoneï¼é£ä¹è¿1gçåä¼åå¸å°ä¸åçè½´ä¸ï¼è¿åå³äºæ¡æiPhoneçæ¹å¼ãå½ä»¥45度è§æ¡æiPhoneæ¶ï¼1gçåä¼ååçå解å°ä¸¤ä¸ªè½´ä¸ã
ããæ£å¸¸ä½¿ç¨æ¶ï¼å é计å¨ä»»ä¸è½´ä¸é½ä¸ä¼æ£æµå°è¿å¤§äº1gçå¼ãå¦ææ£æµå°çå é计å¼è¿å¤§äº1gï¼é£ä¹å³å¯å¤æè¿æ¯çªç¶å¨ä½ãå¦ææå¨iPhoneï¼é£ä¹å é计便ä¼å¨ä¸ä¸ªæå¤ä¸ªè½´ä¸æ£æµå°å¾å¤§çåï¼å¦æææ·æå è½ï¼ é£ä¹å é计便ä¼å¨ä¸ä¸ªæå¤ä¸ªè½´ä¸æ£æµå°å¾å°çåã
ããwi-fiå®ä¹
ããæ 线路ç±å¨
ããWi-Fi åå
æ¯æ 线ä¿çç缩åï¼Wi-Fi çè±æå
¨ç§°ä¸ºwireless fidelityï¼è¯»é³ä¸ºwaifaiï¼æ¼é³è¯»æ³ï¼å为ä¸å£°ï¼ï¼è±æé³æ /ˈwaɪfaɪ/, wireless [è±] [ˈwaɪəlɪs] fidelity[è±] [fiˈdeliti]ã
ããå¨æ 线å±åç½çèç´æ¯æâæ 线ç¸å®¹æ§è®¤è¯âï¼å®è´¨ä¸æ¯ä¸ç§åä¸è®¤è¯ï¼åæ¶ä¹æ¯ä¸ç§æ 线èç½çææ¯ï¼ä»¥åéè¿ç½çº¿è¿æ¥çµèï¼èç°å¨åæ¯éè¿æ 线çµæ³¢æ¥è¿ç½ï¼å¸¸è§çå°±æ¯ä¸ä¸ªæ 线路ç±å¨ï¼é£ä¹å¨è¿ä¸ªæ 线路ç±å¨ççµæ³¢è¦ççææèå´é½å¯ä»¥éç¨WIFIè¿æ¥æ¹å¼è¿è¡èç½ï¼å¦ææ 线路ç±å¨è¿æ¥äºä¸æ¡ADSL线路æè
å«çä¸ç½çº¿è·¯ï¼åå被称为âçç¹âã
ããç¼è¾æ¬æ®µç®ä»ããWi-Fi ä¿ç§°æ 线宽带ï¼ä¸å½çµä¿¡å°CDMA 1X/3Gä¹ç§°ä¸ºæ 线宽带ï¼wi-Fiä¸Wlançåºå«å¨äºWLanæ¯æ 线å±åç½ï¼Wi-Fiæ¯ä¸ç§ææ¯ï¼Wlanå±äºWi-Fiã
ããæ¯æWi-Fiçææº
ããæè°Wi-Fiï¼æ¯ç±ä¸ä¸ªå为âæ 线以太ç½ç¸å®¹èçâ(Wireless Ethernet Compatibility Alliance,WECA)çç»ç»æåå¸çä¸çæ¯è¯ï¼ä¸æè¯ä¸ºâæ 线ç¸å®¹è®¤è¯âãå®æ¯ä¸ç§çç¨æ çº¿ä¼ è¾ææ¯ï¼è½å¤å¨æ°ç¾è±å°ºèå´å
æ¯æäºèç½æ¥å
¥çæ 线çµä¿¡å·ãéçææ¯çåå±ï¼ä»¥åIEEE 802.11a åIEEE 802.11gçæ åçåºç°ï¼ç°å¨IEEE 802.11 è¿ä¸ªæ å已被ç»ç§°ä½Wi-Fiãä»åºç¨å±é¢æ¥è¯´ï¼è¦ä½¿ç¨Wi-Fiï¼ç¨æ·é¦å
è¦æWi-Fi å
¼å®¹çç¨æ·ç«¯è£
ç½®ã
ããWi-Fiæ¯ä¸ç§å¸®å©ç¨æ·è®¿é®çµåé®ä»¶ãWebåæµå¼åªä½çäºèç½ææ¯ï¼å®ä¸ºç¨æ·æä¾äºæ 线ç宽带äºèç½è®¿é®ãåæ¶ï¼å®ä¹æ¯å¨å®¶éãåå
¬å®¤æå¨æ
éä¸ä¸ç½çå¿«éã便æ·çéå¾ãè½å¤è®¿é®Wi-Fi ç½ç»çå°æ¹è¢«ç§°ä¸ºçç¹ãWi-Fiæ802.11Gå¨2.4Ghzé¢æ®µå·¥ä½ï¼ææ¯æçé度æé«è¾¾54Mbps(802.11Nå·¥ä½å¨2.4Ghzæè
5.0Ghz,æé«é度600Mbps)ãå¦å¤è¿æ两ç§802.11空é´çåè®®ï¼å
æ¬(a)å(b)ãå®ä»¬ä¹æ¯å
¬å¼ä½¿ç¨çï¼ä½802.11G/Nå¨ä¸çä¸æ为常ç¨ã
ããèç+wifi æ 线设å¤
ããWi-Fi çç¹æ¯éè¿å¨äºèç½è¿æ¥ä¸å®è£
访é®ç¹æ¥å建çãè¿ä¸ªè®¿é®ç¹å°æ 线信å·éè¿çç¨è¿è¡ä¼ è¾ï¼ ä¸è¬è¦ç300è±å°ºãå½ä¸å°æ¯æWi-Fi ç设å¤ï¼ä¾å¦Pocket PC)éå°ä¸ä¸ªçç¹æ¶ï¼è¿ä¸ªè®¾å¤å¯ä»¥ç¨æ 线æ¹å¼è¿æ¥å°é£ä¸ªç½ç»ã大é¨åç½ç¹é½ä½äºä¾å¤§ä¼è®¿é®çå°æ¹ï¼ä¾å¦æºåºãåå¡åºãæ
é¦ã书åºä»¥åæ ¡åççã许å¤å®¶åºååå
¬å®¤ä¹æ¥æWi-Fi ç½ç»ãè½ç¶æäºçç¹æ¯å
è´¹çï¼ä½æ¯å¤§é¨å稳å®çå
Œ
±Wi-Fi ç½ç»æ¯ç±ç§äººäºèç½æå¡æä¾å(ISP)æä¾çï¼å æ¤ä¼å¨ç¨æ·è¿æ¥å°äºèç½æ¶æ¶åä¸å®è´¹ç¨ã
ããå
¨ç§°Wireless Fidelityã802.11bææ¶ä¹è¢«é误å°æ 为Wi-Fiï¼å®é
ä¸Wi-Fiæ¯æ 线å±åç½èç(WLANA)çä¸ä¸ªåæ ï¼è¯¥åæ ä»
ä¿é使ç¨è¯¥åæ çååäºç¸ä¹é´å¯ä»¥åä½ï¼ä¸æ åæ¬èº«å®é
ä¸æ²¡æå
³ç³»ãä½æ¯åæ¥äººä»¬éæ¸ä¹ æ¯ç¨WIFIæ¥ç§°å¼802.11båè®®ãå®çæ大ä¼ç¹å°±æ¯ä¼ è¾é度è¾é«ï¼å¯ä»¥è¾¾å°11Mbpsï¼å¦å¤å®çææè·ç¦»ä¹å¾é¿ï¼åæ¶ä¹ä¸å·²æçåç§802.11 DSSS设å¤å
¼å®¹ãç¬è®°æ¬çµèææ¯ââè¿
é©°ææ¯å°±æ¯åºäºè¯¥æ åçã
ããIEEE([ç¾å½]çµååçµæ°å·¥ç¨å¸åä¼ï¼802.11bæ 线ç½ç»è§èæ¯IEEE 802.11ç½ç»è§èçæ©å±ï¼æé«å¸¦å®½ä¸º11 Mbpsï¼å¨ä¿¡å·è¾å¼±ææå¹²æ°çæ
åµä¸ï¼å¸¦å®½å¯è°æ´ä¸º5.5Mbpsã2Mbpså1Mbpsï¼å¸¦å®½çèªå¨è°æ´ï¼ææå°ä¿éäºç½ç»ç稳å®æ§åå¯é æ§ãå
¶ä¸»è¦ç¹æ§ä¸ºï¼é度快ï¼å¯é æ§é«ï¼å¨å¼æ¾æ§åºåï¼é讯è·ç¦»å¯è¾¾305ç±³ï¼å¨å°éæ§åºåï¼é讯è·ç¦»ä¸º76ç±³å°122ç±³ï¼æ¹ä¾¿ä¸ç°æçæ线以太ç½ç»
ããæ¯æWi-Fiçç¬è®°æ¬
ããæ´åï¼ç»ç½çææ¬æ´ä½ã
ããWi-Fi(WirelessFidelityï¼æ 线ç¸å®¹æ§è®¤è¯ï¼çæ£å¼å称æ¯âIEEE802.11bâï¼ä¸èçä¸æ ·ï¼åå±äºå¨åå
¬å®¤å家åºä¸ä½¿ç¨ççè·ç¦»æ 线ææ¯ãè½ç¶å¨æ°æ®å®å
¨æ§æ¹é¢ï¼è¯¥ææ¯æ¯èçææ¯è¦å·®ä¸äºï¼ä½æ¯å¨çµæ³¢çè¦çèå´æ¹é¢åè¦ç¥èä¸ç¹ãWi-Fiçè¦çèå´åå¯è¾¾300è±å°ºå·¦å³ï¼çº¦å90ç±³ï¼ï¼åå
¬å®¤èªä¸ç¨è¯´ï¼å°±æ¯å¨å°ä¸ç¹çæ´æ 大楼ä¸ä¹å¯ä½¿ç¨ã
ããUSBæ 线ç½å¡
ããWiFiäº
ããç¼è¾æ¬æ®µç»å»º
ããæ 线ç½ç»çæ¶è®¾
ããä¸è¬æ¶è®¾æ 线ç½ç»çåºæ¬é
å¤å°±æ¯æ 线ç½å¡åä¸å°APï¼å¦æ¤ä¾¿è½ä»¥æ 线ç模å¼ï¼é
åæ¢æçæ线æ¶ææ¥å享ç½ç»èµæºï¼æ¶è®¾è´¹ç¨åå¤æç¨åº¦è¿è¿ä½äºä¼ ç»çæ线ç½ç»ãå¦æåªæ¯å å°çµèç对çç½ï¼ä¹å¯ä¸è¦APï¼åªéè¦æ¯å°çµèé
å¤æ 线ç½å¡ãAP为AccessPointç®ç§°ï¼ä¸è¬ç¿»è¯ä¸ºâæ 线访é®æ¥å
¥ç¹âï¼æâæ¡¥æ¥å¨âãå®ä¸»è¦å¨åªä½ååæ§å¶å±MACä¸æ®æ¼æ 线工ä½ç«åæ线å±åç½ç»çæ¡¥æ¢ãæäºAPï¼å°±åä¸è¬æ线ç½ç»çHubä¸è¬ï¼æ 线工ä½ç«å¯ä»¥å¿«éä¸è½»æå°ä¸ç½ç»ç¸è¿ãç¹å«æ¯å¯¹äºå®½å¸¦ç使ç¨ï¼WiFiæ´æ¾ä¼å¿ï¼æ线宽带ç½ç»(ADSLãå°åºLANçï¼å°æ·åï¼è¿æ¥å°ä¸ä¸ªAPï¼ç¶åå¨çµèä¸å®è£
ä¸åæ 线ç½å¡å³å¯ãæ®éç家åºæä¸ä¸ªAPå·²ç»è¶³å¤ï¼çè³ç¨æ·çé»éå¾å°ææåï¼åæ éå¢å 端å£ï¼ä¹è½ä»¥å
±äº«çæ¹å¼ä¸ç½ã
ããç¼è¾æ¬æ®µåºç¨ããç±äºWiFiçé¢æ®µå¨ä¸çèå´å
æ¯æ éä»»ä½çµä¿¡è¿è¥æ§ç
§çå æ¤WLANæ 线设å¤æä¾äºä¸ä¸ªä¸çèå´å
å¯ä»¥ä½¿ç¨çï¼è´¹ç¨æå
¶ä½å»ä¸æ°æ®å¸¦å®½æé«çæ 线空ä¸æ¥å£ãç¨æ·å¯ä»¥å¨WiFiè¦çåºåå
å¿«éæµè§ç½é¡µï¼éæ¶éå°æ¥å¬æ¨æçµè¯ãèå
¶å®ä¸äºåºäºWLANç宽带æ°æ®åºç¨ï¼å¦æµåªä½ãç½ç»æ¸¸æç
ããå°å¼æºæ 线ç½å¡
ããåè½æ´æ¯å¼å¾ç¨æ·æå¾
ãæäºWiFiåè½æ们æé¿éçµè¯ï¼å
æ¬å½é
é¿éï¼ãæµè§ç½é¡µãæ¶åçµåé®ä»¶ãé³ä¹ä¸è½½ãæ°ç ç
§çä¼ éçï¼åæ éæ
å¿é度æ
¢åè±è´¹é«çé®é¢ã
ããWiFiå¨æä¸è®¾å¤ä¸åºç¨è¶æ¥è¶å¹¿æ³ï¼èæºè½ææºå°±æ¯å
¶ä¸ä¸ä»½åãä¸æ©ååºç¨äºææºä¸çèçææ¯ä¸åï¼WiFiå
·ææ´å¤§çè¦çèå´åæ´é«çä¼ è¾éçï¼å æ¤WiFiææºæ为äºç®å移å¨éä¿¡ä¸ççæ¶å°æ½®æµã
ããç°å¨WiFiçè¦çèå´å¨å½å
è¶æ¥è¶å¹¿æ³äºï¼é«çº§å®¾é¦ã豪åä½å®
åºãé£æºåºä»¥ååå¡å
ä¹ç±»çåºåé½æWiFiæ¥å£ãå½æ们å»æ
游ãåå
¬æ¶ï¼å°±å¯ä»¥å¨è¿äºåºæ使ç¨æ们çæä¸è®¾å¤å°½æ
ç½ä¸å²æµªäºã
ããç¼è¾æ¬æ®µå¸åºããWi-Fiçè§æ¨¡åä¸ååºç¨ï¼å¨ä¸çèå´å
ç½è§æåå
ä¾ãé®é¢éä¸å¨ä¸¤ä¸ªæ¹é¢ï¼ä¸æ¯å¤§åè¿è¥å对è¿ä¸æ¨¡å¼çä¸è®¤å¯ï¼äºæ¯æ¬èº«ç¼ºä¹ææçåä¸æ¨¡å¼ãä½åºäºWi-Fiææ¯çæ 线å±åç½å·²ç»æ¥è¶æ®åï¼è¿å°æå³å°æ¥å¯ä»¥ååæ¹ä¾¿çåºç¨ãä¸æ¦åå¨Wi-Fiç½ç»çå
¬ä¼åºåï¼è§£å³äºè¿è¥åçäºèäºéãé«æ¶è´¹ã漫游æ§çé®é¢ï¼Wi-Fiå°æ¥ä»ä¸ä¸ªæåçææ¯è½¬å为æåçåä¸ã
ããç¼è¾æ¬æ®µWAPIä¸WIFIããWIFI解ç¦é®é¢åå¼å
³æ³¨
ããWIFI(WirelessFidelity)ä¸èçææ¯ä¸æ ·ï¼åå±äºçè·ç¦»æ 线ææ¯ï¼æ¯ä¸ç§ç½ç»ä¼ è¾æ åãå¨æ¥å¸¸çæ´»ä¸ï¼å®æ©å·²å¾å°æ®éåºç¨ï¼å¹¶ç»äººä»¬å¸¦æ¥æ大çæ¹ä¾¿ï¼ç½é¢ä»¬å¨æå·´å
ä¸æµè§ç½é¡µãè®°è
å¨ä¼è®®ç°åºåå稿件ãæ®é人å¨èªå·±å®¶ä¸éå¿æ欲çéæ©ç¨ææºæè
å¤å°ç¬è®°æ¬çµèæ 线ä¸ç½ï¼è¿äºé½ç¦»ä¸å¼WIFIã
ããä½ä¸ç´ä»¥æ¥ï¼ç±äºå·¥ä¿¡é¨æ令ç¦æ¢æ¯æWIFIåè½çææºå¨å½å
è·å¾å
¥ç½è®¸å¯ï¼æ´åçææºè¦æ³è¿å
¥ä¸å½å¤§éå¸åºå¿
é¡»æé¤WIFI模åæå±è½è¯¥åè½ï¼æ为被å¾å¤äººæ称çâéå²çâææºã
ããâå¦æè¿å
¥ä¸å½å¸åºçæ¯âéå²çâiphoneï¼é£åå¸ä¹æ¥å°±æ¯æå»ä¹°æ°´è´§ä¹æ¶ãâå¾å¤ä¸ç´ä»¥æ¥å¯¹WIFIåè½è¢«ç¦ä¸æ»¡çiphoneæ¥è¶¸ä»¬é½ä¸çº¦èåç表达äºç±»ä¼¼è§ç¹ã
ããæ³äºè§£WIFIå½å
被ç¦çéè¦åå ï¼å°±ä¸å¾ä¸æå°å¦ä¸ä¸ªæ åâââWAPIçåå¨ã2003å¹´åºå°çWAPIæ åï¼å
¨å为æ 线å±åç½é´å«ä¸ä¿å¯åºç¡ç»æï¼ï¼ä½ä¸ºä¸å½èªä¸»ç åãæ¥æèªä¸»ç¥è¯äº§æçæ 线å±åç½å®å
¨ææ¯æ åï¼ä¸WIFIæ¯ä¸¤ä¸ªä¸ååè®®ï¼æ大çåºå«æ¯å®å
¨å å¯çææ¯ä¸åãåºäºå¯¹äºèç½å®å
¨çèèï¼ä¸å½ä¸ç´å¼ºç建议æ¨èWAPIä½ä¸ºä¸ä¸ªç¬ç«çå½é
æ åãå½å
ææºçWIFIåè½ä¹æ以被åæ¶ï¼ä¹æ£å 为WIFIå议并éä¸å½å¤§éå®æ¹æ认å¯ã
ããæ¯WAPIèå©è¿æ¯WIFIåç¸è§£ç¦
ããä¸å½æ¬æç®äº2004å¹´6æ1æ¥èµ·å¼ºå¶å®æ½WAPIæ åï¼ä½éå°äºè±ç¹å°çç¾å½å
¬å¸ä¹è³ç¾å½æ¿åºçæµå¶ï¼ç´è³2009å¹´6æWAPIé¦æ¬¡è·ç¾ãè±ãæ³ç10ä½ä¸ªå½å®¶æåçä¸è´åæï¼å°ä»¥ç¬ç«ææ¬å½¢å¼æ¨è¿ä¸ºå½é
æ åã
ããå¾å¤ä¸å
人士对5å¹´åçWAPIåWIFIä¹äºè¿è®°å¿ç¹æ°ã
ãã2003å¹´åºï¼å½å®¶è´¨æ£æ»å±åå½å®¶æ åå管çå§åä¼åå¸å
¬åï¼ç§°èª2004å¹´6æ1æ¥èµ·å°å¼å§å¼ºå¶å®æ½WAPIæ åãæ¤ä¸¾éå³éå°äºè±ç¹å°çç¾å½å
¬å¸ä¹è³ç¾å½æ¿åºçæµå¶ï¼å¹¶å¨èå°åæ¢å¨ä¸å½å¼å±æ 线ä¸å¡ï¼å£°ç§°ä¸WAPI æ åç¸æ¯ï¼è¥¿æ¹å
¬å¸æ´æ¿æéç¨å®ä»¬èªå·±çæ åã2004å¹´4æ22æ¥ï¼ä¸ç¾ä¸¤å½ç»è¿è°å¤ï¼å½æ¶çä¸å½å½å¡é¢å¯æ»çå´ä»ªè¡¨ç¤ºï¼ä¸å½åæç¾æ¹æåºçè¦æ±ï¼å°ä¸å¼ºå¶å®æ½WAPIæ åã7æï¼ä¸å½åå½é
æ åç»ç»æ£å¼æ交äºWAPIææ¡ï¼ä½ä¹åä¸å½çWAPIæ åéå°äºåææªæçé»å»ï¼WAPIæ åæ为å½é
æ åä¸äºè¢«è¿«ææµ
ã
ããè°æ¾æ³ï¼è¿ä¸çå°±æ¯5å¹´ï¼ç´è³2009å¹´6æï¼äºæ
æåæäºé大转æºãä¸å½WAPI产ä¸èçå
¬å¼ç¡®è®¤ï¼å¨è¿æçå½é
æ åç»ç»ISO/IECJTC1/SC6ä¼è®®ä¸ï¼WAPIé¦æ¬¡è·ç¾ãè±ãæ³ç10ä½ä¸ªå½å®¶æåçä¸è´åæï¼å°ä»¥ç¬ç«ææ¬å½¢å¼æ¨è¿ä¸ºå½é
æ åãæä¸å®¶å°æ¤äºä»¶è§ä¸º âç¾æ¹ç¬¬ä¸æ¬¡å¼å§å±¥è¡âæ¨è¿WAPIæ为å½é
æ åâæ¿è¯ºçæ å¿æ§äºä»¶âã
ããæç
§ç®å工信é¨çææ°æ¿çï¼å¡æ¯å è£
WAPIåè½çææºå¯å
¥ç½æ£æµå¹¶è·è¿ç½è®¸å¯è¯ï¼ååæ¯è¿ç±»ææºå¨æWAPIç½ç»æ¶å¯ä»¥ä½¿ç¨WAPIæ¥å
¥ï¼èæç´¢ä¸å°WAPIæ¶ï¼åå¯éè¿WIFIè¿è¡æ 线ç½ç»æ¥å
¥ï¼ä½çº¯WIFIææºä»ä¸è½ä¸å¸ã
ããç¼è¾æ¬æ®µç¹ç¹ããä¸ä¸ªWi-Fièæ¥ç¹ç½ç»æååç»æç«ç¹(Station) ï¼ç½ç»æåºæ¬çç»æé¨åã
ããæ¥æwifiåè½çææº(3å¼ )
ããåºæ¬æå¡åå
(Basic Service Set,BSS)æ¯ç½ç»æåºæ¬çæå¡åå
ãæç®åçæå¡åå
å¯ä»¥åªç±ä¸¤ä¸ªç«ç¹ç»æãç«ç¹å¯ä»¥å¨æå°èç»(associate)å°åºæ¬æå¡åå
ä¸ã
ããåé
ç³»ç»(Distribution System,DS)ãåé
ç³»ç»ç¨äºè¿æ¥ä¸åçåºæ¬æå¡åå
ãåé
ç³»ç»ä½¿ç¨çåªä»(Medium) é»è¾ä¸ååºæ¬æå¡åå
使ç¨çåªä»æ¯æªç¶åå¼çï¼å°½ç®¡å®ä»¬ç©çä¸å¯è½ä¼æ¯åä¸ä¸ªåªä»ï¼ä¾å¦åä¸ä¸ªæ 线é¢æ®µã
ããæ¥å
¥ç¹(Access Point,AP)ãæ¥å
¥ç¹æ¢ææ®éç«ç¹ç身份ï¼åææ¥å
¥å°åé
ç³»ç»çåè½ã
ããæ©å±æå¡åå
(Extended Service Set,ESS)ãç±åé
ç³»ç»ååºæ¬æå¡åå
ç»åèæãè¿ç§ç»åæ¯é»è¾ä¸ï¼å¹¶éç©çä¸ç--ä¸åçåºæ¬æå¡åå
ç©æå¯è½å¨å°çä½ç½®ç¸å»çè¿ãåé
ç³»ç»ä¹å¯ä»¥ä½¿ç¨åç§åæ ·çææ¯ã
ããå
³å£(Portal) ï¼ä¹æ¯ä¸ä¸ªé»è¾æåãç¨äºå°æ 线å±åç½åæ线å±åç½æå
¶å®ç½ç»è系起æ¥ã
ããè¿å¿æ3ç§åªä»ï¼ç«ç¹ä½¿ç¨çæ 线çåªä»ï¼åé
ç³»ç»ä½¿ç¨çåªä»ï¼ä»¥ååæ 线å±åç½éæä¸èµ·çå
¶å®å±åç½ä½¿ç¨çåªä»ãç©çä¸å®ä»¬å¯è½äºç¸éå ãã
ããIEEE802.11åªè´è´£å¨ç«ç¹ä½¿ç¨çæ 线çåªä»ä¸ç寻å(Addressing)ãåé
ç³»ç»åå
¶å®å±åç½ç寻åä¸å±æ 线å±åç½çèå´ã
ããIEEE802.11没æå
·ä½å®ä¹åé
ç³»ç»ï¼åªæ¯å®ä¹äºåé
ç³»ç»åºè¯¥æä¾çæå¡(Service)ãæ´ä¸ªæ 线å±åç½å®ä¹äº9ç§æå¡ï¼
ãã5ç§æå¡å±äºåé
ç³»ç»çä»»å¡ï¼åå«ä¸ºï¼èæ¥(Associationï¼ï¼ç»æèæ¥(Diassociation)ï¼åé
(Distribution)ï¼éæ(Integration)ï¼åèæ¥(Reassociation)ã
ãã4ç§æå¡å±äºç«ç¹çä»»å¡ï¼åå«ä¸ºï¼é´æ(Authentication)ï¼ç»æé´æ(Deauthentication)ï¼éç§(Privacy)ï¼ MACæ°æ®ä¼ è¾(MSDU delivery)ã
ããç¼è¾æ¬æ®µç¹æ§ããæ éé£è¡ï¼Wi-Fiä¹æäºâå·¨æâãWi-Fiå¯è°æ¯âéå®éç²âï¼ä»å
«ä¸ªæ¹é¢å
¨é¢å
è£
èªå·±ãä¸æåå«ä»å¸¦å®½ï¼ä¿¡å·ï¼åèï¼å®å
¨ï¼èç½ï¼ä¸ªäººæå¡ï¼ç§»å¨ç¹æ§ï¼å®¢æ·ç«¯å
¨æ¹ä½ä¸ºæ¨åæWi-Fiçç¬å°ä¹å¤ã[1]æ´å®½ç带宽ããè½ç¶IEEEå¯å¨äºä¸¤ä¸ªé¡¹ç®æç®å°802.11æ åæ°æ®éçæé«å°åå
æå åå
ï¼ä½è³ä»ä¹è¿æ²¡æå½¢æå稿ã
ããæ´å®é
ä¸ç¹çæ¯802.11næ åå°æ°æ®éçæé«äºä¸ä¸ªç级ï¼å¯ä»¥éåºä¸åçåè½å设å¤ï¼ç®åï¼ææ11næ 线æ¶åè£
ç½®æ¯æ两个空é´æ°æ®æµï¼åéåæ¥æ¶æ°æ®å¯ä»¥ä½¿ç¨ä¸¤ä¸ªæä¸ä¸ªå¤©çº¿ç»åï¼è¹æææ°çWi-Fi iPod Touchå°±å«æä¸é¢åé(Broadcom)çæ 线è¯çï¼æ¯æ11næ åã
ããå¾å¿«å°ä¼æè¯çæ¯æä¸ãå个æ°æ®æµï¼æ°æ®éçå¯ä»¥åå«è¾¾å°450Mbpså600Mbpsã2009å¹´å,Quantennaé信表示å®å·²ç»ç å¶æå4x4è¯çï¼å¯ä»¥æ¿è½½é«æ¸
æ°åçµè§ä¿¡å·æµã
ããWi-Fi设å¤ä¾åºåRuckusæ 线çå
±ååå§äººåCTO William Kish说ï¼âè½ç¶ä¸ä¼æå¾å¤å®¢æ·ç«¯è®¾å¤æ¯æ4个空é´æµï¼åªè¦æ£ç¡®è®¾è®¡è®¿é®ç¹ï¼å°å¯ä»¥å©ç¨600Mbpsç©çå±æ°æ®éçï¼å®ç°é«éæ 线骨干ç½ãâ
ããä½ å¯ä»¥éè¿802.11sæ åå°è¿äºé«ç«¯èç¹è¿æ¥èµ·æ¥ï¼å½¢æ类似äºèç½çå
·æåä½è½åçWi-Fiç½ç»ãæ´å¼ºçå°é¢ä¿¡å·ãã11nä¸æ´å¤å¯éçæ§è½ç¹æ§å°ä¼åºç°å¨æ 线è¯çä¸ï¼æ 线客æ·ç«¯åæ 线访é®ç¹å©ç¨è¿äºè¯çå¯ä»¥ä½¿å°é¢(RF)ä¿¡å·æ´å
·å¼¹æ§ï¼ç¨³å®åå¯é ï¼æ¢å¥è¯è¯´æ´è±¡ä¸ä¸ªçµçº¿ã
ããæ 线è¯çå¶é åAtheroså
¬å¸çCTO William McFarland说ï¼âæ°ç11nç©çå±ææ¯å°ä½¿Wi-Fiåè½æ´å¼ºå¤§ï¼å¨ç»å®èå´å
æ°æ®ä¼ è¾éçæ´é«ï¼ä¼ è¾è·ç¦»æ´é¿âã
ããè¿äºæ§è½ç¹æ§å
æ¬ï¼ä½å¯åº¦å¥å¶æ ¡éªç ï¼æé«çº éè½åï¼åå°æ³¢æå½¢æï¼å®ä½¿ç¨æ¥èªWi-Fi客æ·ç«¯çåé¦ï¼è®©ä¸ä¸ªè®¿é®ç¹éä¸å¤ç客æ·ç«¯çå°é¢ä¿¡å·ï¼ç©ºé´æ¶åç»ç¼ç (STBC)ï¼å®å©ç¨å¤é天线æé«ä¿¡å·å¯é æ§ã
ããMcFarland说ï¼âå¦ä»ä½ 带çä¸ä¸ªæWi-Fiåè½çç¬è®°æ¬é¥¶å»ºçç©ä¸å¨ï¼ä½ ä¼åç°æ°æ®éçä¸éææ¶å¤±ï¼ä½ä½¿ç¨STBCåï¼è¿æ¥å°ä¼ç»§ç»å·¥ä½âãWi-Fiåèæ´ä½ãã802.11nå¨åèå管çæ¹é¢è¿è¡äºé大åæ°ï¼ä¸ä»
è½å¤å»¶é¿Wi-Fiæºè½ææºççµæ± 寿å½ï¼è¿å¯ä»¥åµå
¥å°å
¶å®è®¾å¤ä¸ï¼å¦å»ççæ§è®¾å¤ï¼æ¥¼å®æ§å¶ç³»ç»ï¼å®æ¶å®ä½è·è¸ªæ ç¾åæ¶è´¹çµå产åãå¯ä»¥ä¸æå°çæµåæ¶éæ°æ®ï¼å¯åºäºç¨æ·ç身份åä½ç½®è¿è¡ä¸ªæ§åã
ããç½ç»ä¸ç(Network World)å主Craig Mathias åéâå
¶å®ç°ä»£å°é¢ææ¯ä¸è½åå°çï¼ç°å¨Wi-Fié½è½åå°äºâã
ããAtherosçMcFarland说ï¼âéçä¼ä¸æ 线å±åç½ç建设ï¼è¿äºåºç¡è®¾æ½å·²ç»å°ä½ï¼ç°å¨åªéè¦æ·»å ä½åèä¼ æå¨å°±å¯ä»¥äºâã
ããåµå
¥å¼Wi-Fiæ 线æ°æ®éä¿¡ååé¦èä¼è®®æè¿å®£å¸ç802.11aæ 线é信以åç§æ件形å¼æä¾ï¼è®©è®¾å¤ä½¿ç¨ä¸æ¥æ¤ç5GHz波段ï¼Gainspanæä¾ç11b/gæ 线设å¤å¸¦æä¸ä¸ªIP软件å æ ï¼çµåæ¶èé常ä½ï¼ä¸åæ åçµæ± å¯ä»¥è¿è¡å å¹´,Redpine Signalsæä¾äºä¸ä¸ªåæµåµå
¥å°11næ 线éä¿¡ä¸ãæ¹è¿çå®å
¨æ§ããäºèç½æå
·ç ´åæ§çå½±åæ¯éè¿ççªèº«ä»½è¯æï¼æç»æå¡æ»å»ï¼ä¾µç¯éç§ï¼åºæ¢ä»¥å缺ä¹ç¸åºçä¿¡ä»»æ段对ç¨æ·é æç伤害ï¼ç§»å¨ç½ç»ä½¿è¿ä¸æ
åµåå¾æ´ç³ï¼å¦æç¨æ·ä¿¡ä»»å½åæå¼çWi-Fiè¿æ¥ï¼æå¯è½ä½¿ä»ä»¬éåæ¯çæ§çé£é©ã
ããIEEEæè¿æ¹åäº802.11wæ åï¼å®ä¿æ¤æ 线管ç帧ï¼ä½¿æ 线é¾è·¯æ´å¥½å°å·¥ä½ï¼Networkså
¬å¸é¦å¸åæå¸Matthew Gast说ï¼âWi-Fi客æ·ç«¯ç°å¨å¯ä»¥æ¥æ¶åéç¨âè½å°ç½ç»âä¿¡æ¯ï¼å¨æ¤ä¹åè¿ä¸ªä¿¡æ¯å¯è½æ¯ç±æ»ç ´è®¿é®ç¹çé»å®¢å©ç¨MACå°å伪é ç,11wæ ååæäºè¿ç§æ»å»âã
ããAruba Networkå
¬å¸æç¥è¥é主管Michael Tennefoss说ï¼âWi-Fiå°ä¼ä½¿ç¨åºäºèº«ä»½çå®å
¨ï¼å¨Wi-Fiç½ç»ä¸ï¼å®å
¨çç¥ä¸ç¨æ·å
³èï¼èä¸æ¯ä¸ç«¯å£å
³èçï¼è¿æ ·ç好å¤æ¯ç¨æ·å¯ä»¥å¨å®¶ï¼åå
¬åºæï¼é
åºï¼åæ¯æºæåå
Œ
±åºæ移å¨ï¼å®å
¨æ§ä¸ä¼åå°å½±åâãä¸éWi-Fiç½ç»çåä½ããå¦æä½ æ¯T-Mobile Wi-Fiç¨æ·ï¼ä½ä½ ç°å¨å¤äºå¦ä¸ä¸ªè¿è¥åæä¾ççç¹èå´å
ï¼é£ä½ æ¯ä¸è½ä½¿ç¨Wi-Fiçãå¨æªæ¥ï¼ä½ çWi-Fi设å¤è½å¤æ¥è¯¢å°âå¤ç½ï¼å
¶å®è¿è¥åçæ 线ç½ç»ï¼âæå¡ï¼å¹¶å¯ä»¥å®å
¨å°æ¥å
¥ï¼ä½ çç¨æ·èº«ä»½å°åä½ ä¸èµ·æ¼«æ¸¸ï¼ä½¿ä½ è½å¤ä½¿ç¨åç§ä¸åçWi-Fiæå¡ã
ãã802.11uæ ååºå°åç¨æ·å°ä¼æ´çµæ´»å°ä½¿ç¨æ 线ç½ç»ï¼æªæ¥ç Wi-Fi为äºä¼å¯¹å¤å¹¿åå®ä»¬çæå¡ï¼åªè¦ä½ æä»å®çæ¡æ¬¾å°±å¯ä»¥é¾æ¥å°å®ä»¬ï¼æ ¹æ®ä½ ç身份ï¼ä½ å¯ä»¥è®¿é®å
¶å®ç½ç»ä¸æææé¨åæå¡çåéï¼å¨ç´§æ¥æ
åµä¸ï¼ä½ å¯ä»¥è·å¾æåºæ¬çè¿æ¥ååè½,802.11uæ å计åå¨2010å¹´6ææå审æ¹ãèªæ管çç客æ·ç«¯ããWi-Fi设å¤å家已ç»æ³äºè®¸å¤åæ³ä½¿å®ä»¬ç设å¤ä¸æ 线访é®ç¹æ´æºè½å°ç»åå·¥ä½ï¼ç®åæ 线访é®ç¹èªèº«ç管çå·²ç»ç¸å½æçï¼ä½æ 线客æ·ç«¯ç管çè¿æ¯ç©ºç½ã
ããå¦æä½ å¨è®¿é®ç¹å客æ·ç«¯åæ¶éç¨æ°çWi-Fi管çåè®®ï¼å®ä»¬ä¹é´çåä½ä¼æ´æ趣ã
ããæ³è±¡ä¸ä¸ä½ çä¸ç½æ¬Wi-Fiéé
å¨ï¼æWi-Fi VoIPçµè¯å¨æªåéåæ¥æ¶æ 线信å·ï¼æä»
å
±äº«ä½ç½®æ°æ®æ¶ï¼å¯ä»¥èççµåï¼è®¿é®ç¹å¯ä»¥å°Wi-Fiè¯é³ä¼è®®éå®åå°ä¸ä¸ªæ´çæ³çç¸é»è®¿é®ç¹ä¸ï¼æè
éå®åå°ä¸ä¸ªè´è½½è¾ä½ç访é®ç¹ä¸ãWi-Fiç½ç»å¯ä»¥å®ä½ä¸ä¸ªå®¢æ·ç«¯çä½ç½®ï¼ä¾å¦ï¼å¨å»ºçç©å¤ï¼æå¨å¤§è¡ä¸ï¼å¯ä»¥åºäºè¿äºæ°æ®æäºå®¢æ·ç«¯è¿æ¥æä½ã
ãã802.11væ åå¯è½ä¼å¨2010å¹´7æåºå®æï¼å¨Wi-Fi管çæ¹é¢å°ä¼æ许å¤å¢å¼ºç¹æ§ï¼å®å°ä¸ºç»è®¡æ¶éå¢å ä¸ä¸ªè®¡æ°å¨éµåï¼å¢å çµæºç®¡çï¼æé«çµæ± 寿å½ï¼å¹¶æ¹åä½ç½®æ°æ®æ¯æã
ããWi-FièççWi-Fiå¤åªä½æ¥çº³æ§å¶è§èä¹æ£å¨å¤ç客æ·ç«¯åè°é®é¢ï¼ç®å该è§èæ£å¨å¼åä¸ï¼å®å¯ä»¥è®©æ 线ç½ç»ååå管çæµåªä½ä¼è¯ï¼å æ¤é«æ¸
æ°è§é¢ä¸ä¼åæç¸å访é®ç¹ä¸çWi-Fiè¯é³ä¼è¯ï¼Wi-Fièçæ£å¨èèå
·ä½çWi-Fi为äºç®¡çè§èï¼ä¸»è¦æ¯åç¨å 个ç¸å
³çIEEEæ åï¼ç¶ååå¢å é¢å¤çæ 线管çåè½ãæ¹å移å¨æ§ããå¨ä»¥åçæ åä¸ç¼ºä¹RF管çï¼å 为访é®ç¹å客æ·ç«¯ä¹é´ï¼ä»¥åä¸ç¸é»æ 线设å¤ä¹é´é常彼æ¤ä¸äºè§£ï¼å®ä»¬åªäºè§£èªå·±çæ 线çµæ³¢é¢çï¼è¿ç§å±éæ§ä½¿å¾æ³ç®¡çRFä¹å¾å°é¾ã
ããä¾å¦ï¼å½ä¸ä¸ªWi-Fiææºè¿å
¥æ个访é®ç¹èå´æ¶ï¼å®ä¼è§¦åä¸ä¸ªç²ç®ç寻æ¾è¿ç¨ï¼å¦æ客æ·ç«¯å¯ä»¥è¯¢é®å®ç访é®ç¹âä½ çé»å±
æ¯è°ï¼åªä¸ä¸ªæ¯æä½³è¿æ¥è®¿é®ç¹?âï¼è¿æ ·è®¾å¤åç½ç»å°±å¯ä»¥æ´å¥½å°åä½ï¼ä¸æ¤åæ¶ï¼Wi-Fi访é®ç¹å¯ä»¥âçâå°å®¢æ·ç«¯çRFç¯å¢ï¼ç¡®å®å¼±ä¿¡å·æä¸è¶³çè¦çé¢ï¼ç¶åéåæªæ½ä¼åè¿æ¥ã
ããå»å¹´åå¸çIEEE 802.11kæ 线èµæºç®¡çæ å解å³äºè¿ä¸ªé®é¢ï¼éè¿æºè½RFï¼å°é¢ï¼ç®¡çæ¹å移å¨æ§ï¼ä½Wi-Fi设å¤å家已ç»å®æ½äºä¸ç³»åçä¸æåè½ä»¥åºå¯¹è¿ä¸ææï¼Aruba èªéåºæ 线管çææ¯ç2.0çæ¬å°±æ¯ä¸ä¸ªä¾åã
ããåæ¶ï¼Wi-Fièç使ç¨11kçæäºç¹æ§ææå®çè¯é³ä¼ä¸è®¤è¯ï¼ç®æ æ¯ä¼å大è§æ¨¡çï¼ä¼ä¸çº§Wi-Fiè¯é³ç¯å¢éè¯è´¨éãWi-Fi个人åºåããç®åçWi-Fiæ¯ä¸ä¸ªç«¯å°ç«¯çè¿æ¥ï¼æªæ¥çWi-Fiç½ç»ï¼ä½ ç设å¤æ 论å¨åªéé½å¯ä»¥ç´æ¥è¿æ¥å°å
¶å®å®¢æ·ç«¯è®¾å¤ï¼ä¾å¦æè½½ä½åèè¯ççOzmo设å¤è®©å¤å´è®¾å¤å¯ä»¥éè¿Wi-Fiç´æ¥è¿æ¥å°ä½ çç¬è®°æ¬çµèã
ããWi-Fièçæè¿å
¬å¸çWi-Fi Direct(WFD)项ç®ï¼å°è®©ä½ ç¬è®°æ¬çµèä¸çWi-Fiå¡ç»è¿è®¿é®ç¹ï¼ç´æ¥è¿æ¥å°æ 线æå°æºï¼æ°ç ç¸æºï¼æ影仪ï¼ä¼ æå¨æç离åå±å¹ãä½ä¸ºä¸ä¸ªè¡ä¸è§èï¼WFDå°å¨åºä»¶ä¸å¼å
¥æ°çåè®®å®ç°ï¼è¿æ ·å°±ä¸éè¦å¯¹ç¡¬ä»¶åæ¹å¨äºã
ããåæ¶ï¼Wi-Fi访é®ç¹éè¿802.11zæ åï¼å®äº2010å¹´7æå®æï¼ä¹å¯ä»¥åæç¹å°ç¹è¿æ¥å¼æï¼å®å°ä¸ºç´æ¥è¿æ¥é
ç½®æä¾æ©å±ï¼å®¢æ·ç«¯è®¾å¤ä»ä¸ä¸ªè®¿é®ç¹è¯·æ±è®¸å¯ç´æ¥è¿æ¥å°å¦ä¸ä¸ªéè¿ç客æ·ç«¯è®¾å¤ï¼ä½æ°æ®ä¸éè¿è®¿é®ç¹ï¼å®¢æ·ç«¯ä»ç¶ä¸è®¿é®ç¹è¿æ¥ï¼ç±è®¿é®ç¹æä¾å
¨å¥å®å
¨å管çæå¡ã
ããç¼è¾æ¬æ®µè®¤è¯ããç®åWi-Fièçæå
¬å¸ç认è¯ç§ç±»æï¼
ãã*WPA/WPA2ï¼WPA/WPA2æ¯åºäºIEEE 802.11aã802.11bã802.11gçå模ãå模æåé¢ç产åæ建ç«çæµè¯ç¨åºãå
容å
å«é讯åå®çéªè¯ãæ 线ç½ç»å®å
¨æ§æºå¶çéªè¯ï¼ä»¥åç½ç»ä¼ è¾è¡¨ç°ä¸ç¸å®¹æ§æµè¯ã
ãã* WMM(Wi-Fi MultiMedia)ï¼å½å½±é³å¤åªä½éè¿æ 线ç½ç»çä¼ éæ¶ï¼è¦å¦ä½éªè¯å
¶å¸¦å®½ä¿è¯çæºå¶æ¯å¦æ£å¸¸è¿ä½å¨ä¸åçæ 线ç½ç»è£
ç½®åä¸åçå®å
¨æ§è®¾å®ä¸æ¯WMMæµè¯çç®çã
ãã* WMM Power Saveï¼å¨å½±é³å¤åªä½éè¿æ 线ç½ç»çä¼ éæ¶ï¼å¦ä½éè¿ç®¡çæ 线ç½ç»è£
ç½®çå¾
å½æ¶é´æ¥å»¶é¿çµæ± 寿å½ï¼å¹¶ä¸ä¸å½±åå
¶åè½æ§ï¼å¯ä»¥éè¿WMM Power Saveçæµè¯æ¥éªè¯ã
ãã*WPS(Wi-Fi Protected Setup)ï¼è¿æ¯ä¸ä¸ª2007å¹´å¹´åæåå¸ç认è¯ï¼ç®çæ¯è®©æ¶è´¹è
å¯ä»¥éè¿æ´ç®åçæ¹å¼æ¥è®¾å®æ 线ç½ç»è£
ç½®ï¼å¹¶ä¸ä¿è¯æä¸å®çå®å
¨æ§ãç®åWPSå
许éè¿Pin Input Config(PIN)ãPush Button Config(PBC)ãUSB Flash Drive Config(UFD)以åNear Field Communication ãContactless Token Config(NFC)çæ¹å¼æ¥è®¾å®æ 线ç½ç»è£
ç½®ã
ãã* ASD(Application Specific Device)ï¼è¿æ¯é对é¤äºæ 线ç½ç»ååç¹(Access Point)åç«å°(Station)ä¹å¤å
¶ä»æç¹æ®åºç¨çæ 线ç½ç»è£
ç½®ï¼ä¾å¦DVDææ¾å¨ãæå½±æºãæå°æºççã
ãã* CWG(Converged Wireless Group)ï¼ä¸»è¦æ¯é对Wi-Fi mobile converged devices çRF é¨åæµéçæµè¯ç¨åºã
温馨提示:答案为网友推荐,仅供参考