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92ÆäÀÌÁö ³»¿ë : 족ì???¤ê? ???¼ë©°, 5G NRê³¼ì?? ?¨ê³¼???? 공존?? ê³??? ???? ì§?????ê³? ???? ?±ì?? ?´ì??ë¡? GSMAë¥? ì¤??¬ì?¼ë? 5G 기ì???? ?¼ë?ë¡? ?¸ì??ë°?ê³? ????[2]. Broadband IoT?? ë¹?êµ??? ???? ???? ????ë¥? ???? ë¡? ??ë©´ì?? ê´?ë²????? ì§????? ??ë¹??¤ë?? ??ê³µí??ë©? ê²½ì?? ?? ?°ë?? ???? ???? ì§??°ì?? ????ë¡? ???? ??ë¹??¤ë?? ì§? ?????? 목ì???? ê°?ì§???. ?¤ì???? ???? ?????? ??ê²½ì?? ì§?????ê³? ?¬ì??ë¹?/?´ì??ë¹? 측면?????? ?¤ë?«ë???? ìµ??? ??ë¥? ?????? ?? LTE?? ????ì§? ?¨ì?¨ì?±ì?? ?µí?? ???? ?? ??ì¤??? ë°°í?°ë¦¬ ?¬ì??, CA Carrier aggregation ?? ë©??? ??????ë¥? ???©í?? 기ê?ë¹??? ?¨ì???? ???? ????, instant transmission ?±ì?? 기ì???? ???©í?? 10ms ?? ì¤??? ???? ???? ì§??? ?? ?¤ì???? ?°ì?? ë¶??¼ì?????? ?? 구ì?¬í???? ë§?족ì???? ?? ???? ì¤?ë¹?ê°? ???? ????. LTE ë¡? ?????? ?? ???? ??ì¤??? ???¡ì?????? 5G NR?? ?? ???? ?µí?? ì§????? ?? ????. Critical IoT?? 1ms ??ì¤??? ???? ???? ì§??°ê³¼ 99.9999%?? ?¬í???? ê³???ì¤??? ??뢰ì?? reliability ?? ????ë¡? ???? ?°ì?? ë¶??¼ì?? ??ë¹??¤ë?? 목ì???¼ë? ?? ??. ???? ë¶??¼ë?? ??ë°????¼ë? 520ms ??ì¤??? ?¨ë???? end-to-end ???? ì§??°ê³¼ 99.9999% ??ì¤??? ??ë¢? ?±ì?? ??구í???? ë¶??¼ë??? ê³µì?? ???? ê³µì???????? ?¤ì?? ê°? ë¡?ë´? ???? ?±ì?? ??ë¡? ?? ?? ????. ?¬ê¸°?? ?????? ê¸? ???? 기ì???? 5G NR?? ì¤?ë¹????? ???¼ë©°, release 15 NR?? ???? ??ì¤??? ê³¼ì?????? ?´ë?? ???? ë¶??¼ë?? ì§? ???? ?? ????ë¡? ??ì¤???ê°? ì§????????¼ë©°, release 16 ?? ?µí?? ?´ë?? URLLC 기ì???? ???? ë°?????ê³? ???? [3][4]. Ultra-short duration transmission, instant transmission, rapid retransmission protocol, ?¤ì?? ?? pre-emption ë°? ?°ì?????? ??ê³?리ì? ?±ì?? ê·¹ë??ë¡? ???? ì§??°ì??ê°??? ??ê³µí??ê¸? ???? ???©ë?? 기ì???¤ì?´ë©°, ???? ??ê²½ì?? ì¢?ì§? ???? ?????????? ?¼ì?? ??ì¤? ?´ì?? ?? ??ì§??? ??ë³´í?? ?? ???? ?¤ì???? ???? ???? ????ê³? CA?? ë³µì?? ?¬ì?´í?¸ì?????? ë³µì?? ?°ê²°?? ??ë³´ë?? ?µí?? ???? ???¡ì?? ?¤ì???? ê²½ë?ë¥? ?µí?? ??뢰ì?? ??ë³? 기ì?? ?±ì?? ì¤?ë¹????? ????. ?´ë?¬í?? 기ì???¤ì?? ì§??°ì??ê°?, ?? 뢰ì??, ???? 커ë?리ì?, 주í???? ?¨ì?¨ì?? ?±ì???? ?¥ë?¨ì?? ?? ???¼ë©° ?¬ì?? 목ì???? ë§?ê²? ???????¼ë? ?¬ì?©í????. ??ë¥? ?¤ë©´, ê·¹ë??ë¡? 짧ì?? ???¡ì?? ì§??????? ?????? êµ? ì¡°ë?? 짧ì?? ???? ì§??°ì?? ??ê³µí??ì§?ë§? ???? 커ë?리ì??? ????ì§???. ??뢰ì?? ??ë³´ë?? ???? ì¤?ë³µë?? ???? ???¡ì?? 주í???? ?¨ì?¨ì?? ??ì¶?ê³? ???©ë?? ???¡ì?? ???©í??ì§? ???? ?¹ì?±ì?? ê°?ì§??? ?? ?¨ì???? ê°?ì§???. 3GPP?? ?¤ì???? ?? ???? ?¤ì???? ??ë¹??¤ë?? 5G NR?? ?µí?? ì§?????ë©´ì?? ê°? ??ë¹??¤ì?? ??구ì?¬í???? ìµ??????? ?¤í?¸ì???? ?´ì?©ì?? ?? ?? ?¬ë?? ê°?ì§? ë°©ì???? ??ê³µí???? ?´ë?¬í?? ?¥ë?¨ì???? ?? ë¹??¤ë?ë¡? ìµ??????? ?? ????ë¡? ì§?????ê³? ????. 3GPP release 15?? ???? 모ì???¤í???? ?µí?? ??ê°??? ?? NR 무ì?????? 기ì???? ???? ?¬ê¸°?? ë©???ì§??? ???? 1ms ???? ì§??? ë²??????? ???? ë§??¬ì?? ???? ë§??? ëª? ???? ???? 99.999%?? ??뢰ì?±ì?? ??ê³µí?? ?? ?????? ???¸í??????[5]. release 16?????? Kbpsë¶??? Mbps ??ì¤??? ???? ?????? 17ms ë²????? ???? ì§??°ì?? ê°?ì§? ?? ?°ì?´í?? ???¡ì?? ???? 99.9%ë¶??? 99.9999%ê¹?ì§??? ??뢰ë??ë¥? ??ê³µí?? ?? ???? ê²??¼ë? 기ë????ê³? ????. Industrial Automation IoT?? ê³µì?? ?????????? ?? ??ì¸? ê°????? ??구ì?¬í???? ë°?????ê¸? ???? ?????? ???¼ë©° ê³µì?? ???? ???¥ë? ?????? ì²??? ???? ???? ??, ????ì§? ë¶??¼ì?? ë°??? ë°? ?¡ì?? ???¤í?? ?±ì?????? ?? ?? ???¬í?? ??구ì?¬í???? ???? ê²??¼ë? ??????ê³? ????. Industrial Automation IoT?? Critical IoTê°? ?´ë?¹í?? ?? ???? ì§??°ì??ê°?, ???? ??뢰ë??ë¡? ?????? ?? ???? ë²? ???? ??구ì?¬í???? ë§?족í??ê¸? ???? 기ì??ê³? ??ë¹??? ë²??? ë¥? ì§???????. ê³µì?¥ì?????? ê²½ì?? ???? ???? ì§??? ë³??? ?±ì?? ?µí?? ??????, ???? ????, ê³µì?? ?´ì?? TSN Time Sensitive Networking ê³? 5G URLLC ?¤í?¸ì???? ê°? T T A J o u r n a l v o l 1 8 590

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93ÆäÀÌÁö ³»¿ë : ?? ??ê°? ??기í?? ?±ì?? ?µí?? ê³????? ??뢰ì?±ì?? ??ê³? ?? ?? ???? ë³´ì?¥ë?? ???? guaranteed delivery ?? ?? ?? ??구ë?? ???©í????. ???? ?´ë?? ë³´ì?¥ë?? ???¡ì?? ?? ?? ?????? IEEE?? IETF?? ???? layer 2, 3???? ???? ???? ???¼ë©°, 5G ?¤í?¸ì???? ???¥ì???? ë³´ë©´ TSN ê°? ?? ê²½ì?? ?¨ë???? URLLC ?¤í?¸ì???¬ì?? ???´ê?ì¸? ???? ë¡? ?¬ê²¨ì§? ?? ????. TSNê³? ?°ì?? ???? ???¤í?????? ?? ë°????¼ë? ?´ë???? ethernet 기ë??? 기ì???? ?¬ì?©ë?? ê³? ????. ?°ë?¼ì?? 5Gë¥? ?°ì??ê³? ë°?ê²°í?©ì??ì¼? ?±ë?? ?´í?? ë¥? ìµ????????? ê´??????? NR???? ?´ë???·ì?? ???? ì§? ???? ??ê³µí???? ë°©ì???? ????????. ?´ë?? NR ?????? ?? ?´ë???? 기ì???? ê¶?ê·¹ì???¼ë? TSNê³¼ì?? ë°?ê²°í?©ì?? ?? ?? 기본 ????ì¡°ê±´?? ?? ê²??´ë??. 3GPP???? ???? ì¤??? Industrial Automation IoT ê´??? 기ì???? 5G Critical IoT?? ?°ì?? ???¥ì?????? ??구ì?¬í???? ì°¨ì?´ì???? 극복?? ?? ?? ì§?ì¤???ê³?[6] ???¼ë©° ?¤ë?? 측ì???? ??ë°??? ?¥ì?? [7], Ethernet over NR, TSN?? ?¨ê³¼???? ì§????? ?? ?? schedulingê³? QoS?? adaptation ?±ì?? ?´ì?? ?´ë?? ????[8]. 3. ê³µì?? URLLC ì§????? ???? 3GPP ??ì¤? ???? 3GPP?????? Release 14 study item?¼ë? ?¤ì?? ?? ?°ì???? ??구ì?¬í???? ë¶??????? ?????? ??????????. ???????? ?¬ë?ë¡??? TR22.891ë¡? ??리ë?? ??ë¡??? ?? ë¹??¤ì?? ???? 그리ê³? ?´ë?? ê°??¥í??ê²? ???? 기ì???? ?? ?? ë³´ê????´ë??. ???? 3GPP?????? ?¤ì???? ?°ì???? ì§? ????ê¸? ???? ???¤ì??´ì?¤ë?? eMBB, mMTC, URLLC ?? ?? ê°?ë¡? ë¶?ë¥??????¼ë©°, ê°? ë¶?ë¥??? ???? ?¬ë?? ?? ?? ??구ì?¬í?? ë¶????? ì§??????? TR22.861 mMTC , TR22.862 URLLC , TR22.863 eMBB ?? ë³´ê???ë¥? ???±í??????. Release 15?????? ?? ì¤? ?¹í?? ??????ë¥? ì§????? ê¸? ???? ?°ì???? ?µì?? ??구ì?¬í???? ???? ?°êµ¬ê°? ì§??? ???? TR22.804[9]?? ??리ë??????. ë³? 문ì?????? ???? ??ê°? ???©ë???? ?°ì???? ì²??? ?´ì??, ë¹??? ??????, 미ë?? ?? ê³µì??, ?¬ì?¤ì???, ?¤ë??¸ì????, ??기ì????ì§? ë¶?ë°°ë?, ì¤??? ì§?ì¤? ????ì§? ????, ??ë¡?ê·¸ë?? ???? ë°? ?´ë²¤?? ì§? ???? ???? AV ???¤í?? PMSE, Programme Making and Special Events , ?¤ë??¸ë???? ?±ì?¼ë? ë¶?ë¥????? ??. ?? ì¤? 미ë?? ê³µì?? ?°ì???????? ê³µì?? ??????, ??ë¡? ?¸ì?? ??????, HMI/???? IT, 물ë??? ì°½ê?, 모ë???°ë? ê³? ê´?ë¦? ë¶??¼ì?? ???©ì?? ê³??¤í?????¼ë©°, ???¤ì??´ì?¤ë?? ??ì§??? ???? ë¹??¤ì??ê°? ?°ì?´í?? ????, ?°ì?? ?´ë???·ê³¼?? ê²°í?? ?¬í?? , ???? ê°? ?µì??, ?´ë???? ???? ?¨ë??, ?´ë???? ë¡?ë´?, ??ê·?ëª? 무ì?? ?¼ì?? ?¤í?¸ì????, ??ê²? ê´?ë¦?, ê°????? ??, ??ë¡??¸ì?? ?????? ?????? ????, ??ë¡??¸ì?? 모ë???? ë§?, ê³µì?¥ì???? ê´?ë¦? ?¬í?? , ?????? ?? ?°ê²°, ??ì¡? ê³µì?? ?¼ë??? 물ë?, ê´?ë²????? ì§????? ???? ê´?ë¦? ë°? ????, ë©? ??ì§? ???¡ì?????? ê°?ë³? ??뢰ì??, ???°í?? 모ë?? ???? ë°? ??, ???¬ê·¸ ?? ??ë¡????? 기ë? ???? ?¤ë?, Type-a ?? ?¸ì???¬ì?? PLMN ?°ë??, ?µì?? ê´?ë¦? ë°? ë¶??? ?±ì?¼ë? ë¶? ë¥????? ?°ì?? ë¶???, ???¤ì??´ì?? ë¶????? ê±°ì? ???¬ì?? ?? ??구ì?¬í???? ??ì¶???????. ???¤ì??´ì?? ë¶???ê³? ??구ì?¬í???? TS22.261[10]?? ?? ?? 5G ???¤í???? ??ë¹??? ??구ì?¬í???¼ë? ??리ë????????, TS22.261???? ?¤í?¸ì???? ?¬ë?¼ì?´ì??, ?´ë???? ì§??? ?±ì?? 기ë?? ??구ì?¬í??ë¿? ?????? ???? ?°ì?´í?? ???? ?????? ?? ???? ë°????? ì§???, ???? ì§??°ì??ê°?ê³? ???? ??뢰ì?±ì?? ì§???, ê³???ë°? ??ì¹? ??ë³?, ???? ?µì??ê³¼ì?? ?°ë?? ?±ì???? ?? ?±ë?? ??구ì?¬í???? ?¬í?¨í??ê³? ???¼ë©°, 미ë?? ê³µì?? ?? ???????? ???¤ì??´ì?¤ë?? ???? ì§??°ê³¼ ???? ??뢰ì?±ì?? ???? ??구ì?¬í???? ë§??? ???¥ì?? 주ì????. ???? ì§??°ê³¼ ???? ??뢰ì?±ì?? ?????? ?°ì??ê³? ?? ?¤ì??´ì?¤ì?? ???? ë¶????? TS22.104[11]???? 5G ?? ?´ë? 물리 ???? ????리ì??´ì?? ??구ì?¬í?? Service 2 0 1 9 S E P T E M B E R + O C T O B E R91

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