锘??xml version="1.0" encoding="utf-8" standalone="yes"?>亚洲视频人成在线播放,久久久婷婷五月亚洲97号色,亚洲国产精品福利片在线观看http://www.tkk7.com/xiaomage234/category/55365.html鐢熷懡鏈氨鏄竴嬈″噭緹庣殑婕傛祦錛岃蹇嗕腑鏀句笉涓嬬殑錛屾案榪滄槸瀛╂彁鏃朵唬鐨勯偅涓浠芥氮婕笌綰湡錛?/description>zh-cnFri, 06 Nov 2020 20:21:43 GMTFri, 06 Nov 2020 20:21:43 GMT60Cat.1 鐜扮姸[杞琞http://www.tkk7.com/xiaomage234/archive/2020/11/06/435716.html灝忛┈姝?/dc:creator>灝忛┈姝?/author>Fri, 06 Nov 2020 06:36:00 GMThttp://www.tkk7.com/xiaomage234/archive/2020/11/06/435716.htmlhttp://www.tkk7.com/xiaomage234/comments/435716.htmlhttp://www.tkk7.com/xiaomage234/archive/2020/11/06/435716.html#Feedback0http://www.tkk7.com/xiaomage234/comments/commentRss/435716.htmlhttp://www.tkk7.com/xiaomage234/services/trackbacks/435716.html

闅忕潃绱厜灞曢攼銆丄SR 絳夎姱鐗囧巶鍟嗗彂甯冩т環姣旀洿楂樼殑 Cat.1 鑺墖涔嬪悗錛孋at.1 妯$粍鍘傚晢鎵庡爢鍙戝竷浜嗚嚜瀹剁殑妯$粍錛?br />浣垮緱甯傚満涓婄殑 Cat.1 妯$粍浠鋒牸宸茬粡榪呴熼檷鑷?45-60 鍏冿紝鐜╁浼楀錛岀珵浜夋儴鐑堬紝鍩烘湰閲嶈蛋 NB-IOT 鐨勮佽礬 —— 閲忔湭璧鳳紝浠峰凡璺屻?/p>

Cat.1 鑺墖鍘熷巶錛?/p>

  • 楂橀?MDM9207-1(2016 騫村彂甯?

  • 绱厜灞曢攼鏄ヨ棨 8910DM錛?8nm宸ヨ壓錛岄泦鎴愯摑鐗欏拰WiFi 瀹ゅ唴瀹氫綅錛?/span>

  • 緲辨嵎 ASR3601

Cat.1 妯$粍鍘傚晢錛堜笉瀹屽叏緇熻錛夛細

  • 涓Щ鐗╄仈緗?/span>

  • 縐昏繙閫氫俊

  • 鍚堝畽鐢靛瓙

  • 縐繪煰閫氫俊

  • 鍩熸牸淇℃伅

  • 騫垮拰閫?/span>

  • 鑺閫?/span>

  • 楂樻柊鍏寸墿鑱?/span>

  • 緹庢牸鏅鴻兘

  • 鏈夋柟縐戞妧

  • 鏈変漢淇℃伅

  • 淇′綅閫氳

  • 閿愰獝(鍘﹂棬)鐢靛瓙

  • 娣卞湷淇″彲閫氳

Cat.1 浼樺娍

  • 鐩稿 NB-IOT錛屽叾閫氫俊閫熺巼浼樺娍鏄庢樉

  • 鐩稿 eMTC錛屽叾緗戠粶鎴愭湰浣?/span>

  • 鐩稿 Cat.4錛屽叾鍏鋒湁涓瀹氱殑鎴愭湰浼樺娍

Cat.1 鍔e娍錛?/p>

  • 鐜伴樁孌佃姱鐗囧巶瀹跺皯

    鍥藉浠ラ珮閫氫負涓伙紝杈呬互 Sequans銆丄ltair銆?/p>

    鍥藉唴涓昏鏄睍閿愬拰緲辨嵎銆?/p>

  • 鐜伴樁孌典環鏍煎亸楂?/p>

    NB-IoT銆丆at.1銆丆at.4 妯$粍浠鋒牸錛?/p>


cat1 鐨勪富瑕佸競鍦哄拰搴旂敤鍦烘櫙錛?/p>

Cat.1 浠嶅浜庡晢鐢ㄥ垵鏈燂紝钀藉湴鐨勫簲鐢ㄥ満鏅拰妗堜緥榪樿緝灝戯紝涓浜涙槑紜殑鍦烘櫙鍖呮嫭浜嗗叡浜侀噾铻嶆敮浠樸佸伐涓氭帶鍒躲佽濺杞芥敮浠樸佸叕緗戝璁層丳OS 絳夌瓑銆?/p>

鎬葷粨

宸ヤ俊閮ㄥ姙鍏巺鍙戝竷浜嗐婂叧浜庢繁鍏ユ帹榪涚Щ鍔ㄧ墿鑱旂綉鍏ㄩ潰鍙戝睍鐨勯氱煡銆嬶紙浠ヤ笅綆縐般婇氱煡銆嬶級鍚屾椂涓?NB-IOT 鍜?Cat.1 绔欏彴錛屾湭鏉?NB-IOT 渚濇棫寰堥錛孋at.1 鍒欏墠閫斿ぇ濂姐?/p>

闅忕潃鏂板熀寤虹殑鍚姩錛?G 鎵撳ご錛屾湭鏉ュ皢鏄?NB-IOT銆?G錛堝寘鎷?Cat.1錛夈?G 鍏卞悓鎵胯澆铚傜獫鐗╄仈緗戠殑榪炴帴錛屼互搴斿涓嶅悓灞傛鐨勭墿鑱旂綉涓氬姟闇姹傘?/p>

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QoS絳夌駭 涓?浼氳瘽[杞琞http://www.tkk7.com/xiaomage234/archive/2020/10/12/435690.html灝忛┈姝?/dc:creator>灝忛┈姝?/author>Mon, 12 Oct 2020 06:19:00 GMThttp://www.tkk7.com/xiaomage234/archive/2020/10/12/435690.htmlhttp://www.tkk7.com/xiaomage234/comments/435690.htmlhttp://www.tkk7.com/xiaomage234/archive/2020/10/12/435690.html#Feedback0http://www.tkk7.com/xiaomage234/comments/commentRss/435690.htmlhttp://www.tkk7.com/xiaomage234/services/trackbacks/435690.html

鑳屾櫙

QoS 絳夌駭 涓?閫氫俊鐨勬祦紼嬫湁鍏籌紝鐩存帴褰卞搷浜嗘暣涓氫俊銆傝屼笖綃囧箙姣旇緝闀匡紝鎵浠ユ垜瑙夊緱搴旇鍗曠嫭鎷庡嚭鏉ヨ涓涓嬨?/p>

姒傚康

QoS 浠h〃浜?鏈嶅姟璐ㄩ噺絳夌駭銆?璁劇疆涓婏紝鐢? 浣?鐨勪簩榪涘埗鎺у埗錛屼笖鍊間笉鍏佽涓?3(0x11)銆?/p>

QoS鍊?/span>Bit 2Bit 1鎻忚堪
000鏈澶氬垎鍙戜竴嬈?/td>
101鑷沖皯鍒嗗彂涓嬈?/td>
210鍙垎鍙戜竴嬈?/td>
-11淇濈暀浣?/td>

瑕佹敞鎰忕殑鏄紝QoS 鏄?nbsp;Sender 鍜?nbsp;Receiver 涔嬮棿杈炬垚鐨勫崗璁紝涓嶆槸 Publisher 鍜?nbsp;Subscriber 涔嬮棿杈炬垚鐨勫崗璁?/p>

涔熷氨鏄 Publisher 鍙戝竷涓鏉?QoS1 鐨勬秷鎭紝鍙兘淇濊瘉 Broker 鑳借嚦灝戞敹鍒頒竴嬈¤繖涓秷鎭紱鑷充簬瀵瑰簲鐨?nbsp;Subscriber 鑳藉惁鑷沖皯鏀跺埌涓嬈¤繖涓秷鎭紝榪樿鍙栧喅浜?nbsp;Subscriber 鍦?nbsp;Subscribe 鐨勬椂鍊欏拰 Broker 鍗忓晢鐨?QoS 絳夌駭銆?/p>

榪欓噷鍙堢壍鎵嚭涓涓蹇碉細"QoS 闄嶇駭"錛氬湪 MQTT 鍗忚涓紝浠?Broker 鍒?Subscriber 榪欐娑堟伅浼犻掔殑瀹為檯 QoS 絳変簬 "Publisher 鍙戝竷娑堟伅鏃舵寚瀹氱殑 QoS 絳夌駭鍜?Subscriber 鍦ㄨ闃呮椂涓?Broker 鍗忓晢鐨?QoS 絳夌駭錛岃繖涓や釜 QoS 絳夌駭涓殑鏈灝忛偅涓涓?

QoS 0 鐨勯氫俊鏃跺簭鍥?/h3>

姝ゆ椂錛屾暣涓繃紼嬩腑鐨?nbsp;Sender 涓嶅叧蹇?nbsp;Receiver 鏄惁鏀跺埌娑堟伅錛屽畠"灝藉姏"鍙戝畬娑堟伅錛岃嚦浜庢槸鍚︽湁浜烘敹鍒幫紝瀹冧笉鍦ㄤ箮銆?/p>

鍙戝竷鑰?/tspan>鏈嶅姟鍣?/tspan>璁㈤槄鑰?/tspan>PUBLISH (QoS0,Msg-A)PUBLISH(QoS0,Msg-A)Delete Msg-A鍙戝竷鑰?/tspan>鏈嶅姟鍣?/tspan>璁㈤槄鑰?/tspan>QoS 0錛欰t most one(Fire and forget)

QoS1 鐨勯氫俊鏃跺簭鍥?/h3>

姝ゆ椂錛?code style="-webkit-tap-highlight-color: transparent; box-sizing: border-box; font-family: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace !important; font-size: 12px !important; line-height: 1.8; margin: 0px 4px !important; vertical-align: middle; display: inline; overflow-x: auto; background-color: rgba(27, 31, 35, 0.05) !important; border: none !important; padding: 0.2em 0.4em !important; border-radius: 3px !important;">Sender 鍙戦佺殑涓鏉℃秷鎭紝Receiver 鑷沖皯鑳芥敹鍒頒竴嬈★紝涔熷氨鏄 Sender 鍚?nbsp;Receiver 鍙戦佹秷鎭紝濡傛灉鍙戦佸け璐ワ紝浼氱戶緇噸璇曪紝鐩村埌 Receiver 鏀跺埌娑堟伅涓烘錛屼絾鏄洜涓洪噸浼犵殑鍘熷洜錛?code style="-webkit-tap-highlight-color: transparent; box-sizing: border-box; font-family: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace !important; font-size: 12px !important; line-height: 1.8; margin: 0px 4px !important; vertical-align: middle; display: inline; overflow-x: auto; background-color: rgba(27, 31, 35, 0.05) !important; border: none !important; padding: 0.2em 0.4em !important; border-radius: 3px !important;">Receiver 鏈夊彲鑳戒細鏀跺埌閲嶅鐨勬秷鎭紱

鍙戝竷鑰?/tspan>鏈嶅姟鍣?/tspan>璁㈤槄鑰?/tspan>Store (Msg-A)PUBLISH (QoS1,Msg-A)Store (Msg-A)PUBLISH (QoS1,Msg-A)PUBACK (QoS1)Delete (Msg-A)PUBACK (QoS1,Msg-A)Delete (Msg-A)鍙戝竷鑰?/tspan>鏈嶅姟鍣?/tspan>璁㈤槄鑰?/tspan>QoS 1錛欰t least one

1錛塖ender 鍚?Receiver 鍙戦佷竴涓甫鏈夋秷鎭暟鎹殑 PUBLISH 鍖咃紝 騫跺湪鏈湴淇濆瓨榪欎釜 PUBLISH 鍖呫?/p>

2錛塕eceiver 鏀跺埌 PUBLISH 鍖呬互鍚庯紝鍚?Sender 鍙戦佷竴涓?PUBACK 鏁版嵁鍖咃紝PUBACK 鏁版嵁鍖呮病鏈夋秷鎭綋錛圥ayload錛夛紝鍦ㄥ彲鍙樺ご涓紙Variable header錛変腑鏈変竴涓寘鏍囪瘑錛圥acket Identifier錛夛紝鍜屽畠鏀跺埌鐨?PUBLISH 鍖呬腑鐨?Packet Identifier 涓鑷淬?/p>

3錛塖ender 鏀跺埌 PUBACK 涔嬪悗錛屾牴鎹?PUBACK 鍖呬腑鐨?Packet Identifier 鎵懼埌鏈湴淇濆瓨鐨?PUBLISH 鍖咃紝鐒跺悗涓㈠純鎺夛紝涓嬈℃秷鎭殑鍙戦佸畬鎴愩?/p>

4錛夊鏋?Sender 鍦ㄤ竴孌墊椂闂村唴娌℃湁鏀跺埌 PUBLISH 鍖呭搴旂殑 PUBACK錛屽畠灝嗚 PUBLISH 鍖呯殑 DUP 鏍囪瘑璁句負 1錛堜唬琛ㄦ槸閲嶆柊鍙戦佺殑 PUBLISH 鍖咃級錛岀劧鍚庨噸鏂板彂閫佽 PUBLISH 鍖呫傞噸澶嶈繖涓祦紼嬶紝鐩村埌鏀跺埌 PUBACK錛岀劧鍚庢墽琛岀 3 姝ャ?/p>

QoS 2 鐨勯氫俊鏃跺簭鍥?/h3>

QoS2 涓嶄粎瑕佺‘淇?Receiver 鑳芥敹鍒?Sender 鍙戦佺殑娑堟伅錛岃繕瑕佷繚璇佹秷鎭笉閲嶅銆傚畠鐨勯噸浼犲拰搴旂瓟鏈哄埗灝辮澶嶆潅涓浜涳紝鍚屾椂寮閿涔熸槸鏈澶х殑銆?/p>

Sender 鍙戦佺殑涓鏉℃秷鎭紝Receiver 紜繚鑳芥敹鍒拌屼笖鍙敹鍒頒竴嬈★紝涔熷氨鏄 Sender 灝藉姏鍚?Receiver 鍙戦佹秷鎭紝濡傛灉鍙戦佸け璐ワ紝浼氱戶緇噸璇曪紝鐩村埌 Receiver 鏀跺埌娑堟伅涓烘錛屽悓鏃朵繚璇?Receiver 涓嶄細鍥犱負娑堟伅閲嶄紶鑰屾敹鍒伴噸澶嶇殑娑堟伅銆?/p>

鍙戝竷鑰?/tspan>鏈嶅姟鍣?/tspan>璁㈤槄鑰?/tspan>Store (Msg-A)PUBLISH (QoS2,Msg-A,DUP=0)Store (Msg-A)PUBREC (QoS2,Msg-A)PUBREL (QoS2,Msg-A)PUBLISH (QoS2,Msg-A,DUP=0)PUBCOMP (QoS2,Msg-A)Delete (Msg-A)Store (Msg-A)PUBREC (QoS2,Msg-A)PUBREL (QoS2,Msg-A)Notify (Msg-A)PUBCOMP (QoS2,Msg-A)Delete (Msg-A)Delete (Msg-A)鍙戝竷鑰?/tspan>鏈嶅姟鍣?/tspan>璁㈤槄鑰?/tspan>QoS 2錛欵xactly one

QoS 浣跨敤 2 濂楄姹?搴旂瓟嫻佺▼錛堜竴涓?4 孌電殑鎻℃墜錛夋潵紜繚 Receiver 鏀跺埌鏉ヨ嚜 Sender 鐨勬秷鎭紝涓斾笉閲嶅錛?/p>

1錛塖ender 鍙戦?QoS 涓?2 鐨?PUBLISH 鏁版嵁鍖咃紝鏁版嵁鍖?Packet Identifier 涓?P錛屽茍鍦ㄦ湰鍦頒繚瀛樿 PUBLISH 鍖咃紱

2錛塕eceiver 鏀跺埌 PUBLISH 鏁版嵁鍖呬互鍚庯紝鍦ㄦ湰鍦頒繚瀛?PUBLISH 鍖呯殑 Packet Identifier P錛屽茍鍥炲 Sender 涓涓?PUBREC 鏁版嵁鍖咃紝PUBREC 鏁版嵁鍖呭彲鍙樺ご涓殑 Packet Identifier 涓?P錛屾病鏈夋秷鎭綋錛圥ayload錛夛紱

3錛夊綋 Sender 鏀跺埌 PUBREC錛屽畠灝卞彲浠ュ畨鍏ㄥ湴涓㈠純鎺夊垵濮嬬殑 Packet Identifier 涓?P 鐨?PUBLISH 鏁版嵁鍖咃紝鍚屾椂淇濆瓨璇?PUBREC 鏁版嵁鍖咃紝鍚屾椂鍥炲 Receiver 涓涓?PUBREL 鏁版嵁鍖咃紝PUBREL 鏁版嵁鍖呭彲鍙樺ご涓殑 Packet Identifier 涓?P錛屾病鏈夋秷鎭綋錛涘鏋?Sender 鍦ㄤ竴瀹氭椂闂村唴娌℃湁鏀跺埌 PUBREC錛屽畠浼氭妸 PUBLISH 鍖呯殑 DUP 鏍囪瘑璁句負 1錛岄噸鏂板彂閫佽 PUBLISH 鏁版嵁鍖咃紙Payload錛夛紱

4錛夊綋 Receiver 鏀跺埌 PUBREL 鏁版嵁鍖咃紝瀹冨彲浠ヤ涪寮冩帀淇濆瓨鐨?PUBLISH 鍖呯殑 Packet Identifier P錛屽茍鍥炲 Sender 涓涓?PUBCOMP 鏁版嵁鍖咃紝PUBCOMP 鏁版嵁鍖呭彲鍙樺ご涓殑 Packet Identifier 涓?P錛屾病鏈夋秷鎭綋錛圥ayload錛夛紱

5錛夊綋 Sender 鏀跺埌 PUBCOMP 鍖咃紝閭d箞瀹冭涓烘暟鎹寘浼犺緭宸插畬鎴愶紝瀹冧細涓㈠純鎺夊搴旂殑 PUBREC 鍖呫傚鏋?Sender 鍦ㄤ竴瀹氭椂闂村唴娌℃湁鏀跺埌 PUBCOMP 鍖咃紝瀹冧細閲嶆柊鍙戦?PUBREL 鏁版嵁鍖呫?/p>

鎴戜滑鍙互鐪嬪埌鍦?QoS2 涓紝瀹屾垚涓嬈℃秷鎭殑浼犻掞紝Sender 鍜?Reciever 涔嬮棿鑷沖皯瑕佸彂閫佸洓涓暟鎹寘錛孮oS2 鏄渶瀹夊叏涔熸槸鏈鎱㈢殑涓縐?QoS 絳夌駭浜嗐?/p>

QoS 鍜屼細璇濓紙Session錛?/h2>

瀹㈡埛绔殑浼氳瘽鐘舵佸寘鎷細

  • 宸茬粡鍙戦佺粰鏈嶅姟绔紝浣嗘槸榪樻病鏈夊畬鎴愮‘璁ょ殑QoS 1鍜孮oS 2綰у埆鐨勬秷鎭?/li>
  • 宸蹭粠鏈嶅姟绔帴鏀訛紝浣嗘槸榪樻病鏈夊畬鎴愮‘璁ょ殑QoS 2綰у埆鐨勬秷鎭?/li>

鏈嶅姟绔殑浼氳瘽鐘舵佸寘鎷細

  • 浼氳瘽鏄惁瀛樺湪錛屽嵆浣夸細璇濈姸鎬佺殑鍏跺畠閮ㄥ垎閮芥槸絀恒?/li>
  • 瀹㈡埛绔殑璁㈤槄淇℃伅銆?/li>
  • 宸茬粡鍙戦佺粰瀹㈡埛绔紝浣嗘槸榪樻病鏈夊畬鎴愮‘璁ょ殑QoS 1鍜孮oS 2綰у埆鐨勬秷鎭?/li>
  • 鍗沖皢浼犺緭緇欏鎴風鐨凲oS 1鍜孮oS 2綰у埆鐨勬秷鎭?/li>
  • 宸蹭粠瀹㈡埛绔帴鏀訛紝浣嗘槸榪樻病鏈夊畬鎴愮‘璁ょ殑QoS 2綰у埆鐨勬秷鎭?/li>
  • 鍙夛紝鍑嗗鍙戦佺粰瀹㈡埛绔殑QoS 0綰у埆鐨勬秷鎭?/li>

淇濈暀娑堟伅涓嶆槸鏈嶅姟绔細璇濈姸鎬佺殑涓閮ㄥ垎錛屼細璇濈粓姝㈡椂涓嶈兘鍒犻櫎淇濈暀娑堟伅銆?/p>

濡傛灉 Client 鎯蟲帴鏀剁綰挎秷鎭紝蹇呴』浣跨敤鎸佷箙鍖栫殑浼氳瘽錛圕ONNECT鎶ユ枃涓彲鍙樺ご錛坆yte8[1]錛塁lean Session = 0錛夎繛鎺ュ埌 Broker錛岃繖鏍?Broker 鎵嶄細瀛樺偍 Client 鍦ㄧ綰挎湡闂存病鏈夌‘璁ゆ帴鏀剁殑 QoS 澶т簬 1 鐨勬秷鎭?/p>

QoS 絳夌駭鐨勯夋嫨

鍦ㄤ互涓嬫儏鍐典笅浣犲彲浠ラ夋嫨 QoS0錛?/p>

  • Client 鍜?Broker 涔嬮棿鐨勭綉緇滆繛鎺ラ潪甯哥ǔ瀹氾紝渚嬪涓涓氳繃鏈夌嚎緗戠粶榪炴帴鍒?Broker 鐨勬祴璇曠敤 Client錛?/li>
  • 鍙互鎺ュ彈涓㈠け閮ㄥ垎娑堟伅錛屾瘮濡備綘鏈変竴涓紶鎰熷櫒浠ラ潪甯哥煭鐨勯棿闅斿彂甯冪姸鎬佹暟鎹紝鎵浠ヤ涪涓浜涗篃鍙互鎺ュ彈錛?/li>
  • 浣犱笉闇瑕佺綰挎秷鎭?/li>

鍦ㄤ互涓嬫儏鍐典笅浣犲簲璇ラ夋嫨 QoS1錛?/span>

  • 浣犻渶瑕佹帴鏀舵墍鏈夌殑娑堟伅錛岃屼笖浣犵殑搴旂敤鍙互鎺ュ彈騫跺鐞嗛噸澶嶇殑娑堟伅錛?/li>
  • 浣犳棤娉曟帴鍙?QoS2 甯︽潵鐨勯澶栧紑閿錛孮oS1 鍙戦佹秷鎭殑閫熷害姣?QoS2 蹇緢澶氥?/li>

鍦ㄤ互涓嬫儏鍐典笅浣犲簲璇ラ夋嫨 QoS2錛?/span>

  • 浣犵殑搴旂敤蹇呴』鎺ユ敹鍒版墍鏈夌殑娑堟伅錛岃屼笖浣犵殑搴旂敤鍦ㄩ噸澶嶇殑娑堟伅涓嬫棤娉曟甯稿伐浣滐紝鍚屾椂浣犱篃鑳芥帴鍙?QoS2 甯︽潵鐨勯澶栧紑閿銆?/li>

瀹為檯涓婏紝QoS1 鏄簲鐢ㄦ渶騫挎硾鐨?QoS 絳夌駭錛孮oS1 鍙戦佹秷鎭殑閫熷害寰堝揩錛岃屼笖鑳藉淇濊瘉娑堟伅鐨勫彲闈犳с傝櫧鐒朵嬌鐢?QoS1 鍙兘浼氭敹鍒伴噸澶嶇殑娑堟伅錛屼絾鏄湪搴旂敤紼嬪簭閲岄潰澶勭悊閲嶅娑堟伅錛岄氬父騫朵笉鏄歡闅句簨銆?/p>

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