통신서비스품질평가보고서 2017 Evaluation Report for the Quality of Communication Services

www.nia.or.kr 2017 통신서비스품질평가보고서 2017 Evaluation Report for the Quality of Communication Services

www.nia.or.kr 2017 통신서비스품질평가보고서 2017 Evaluation Report for the Quality of Communication Services

www.nia.or.kr 1999, 2G, LTE.. 2000 PC LTE.,,. 5G, 10Giga.,,, (VR),,,..,.,. 2017.. 2018. 5 05

www.nia.or.kr 2017.. 5.,. 07

2017 2017 3 (LTE, 3G, WiFi), (500Mbps, 1Gbps), (2G, 3G, VoLTE) (2017. 8 ~ 11 ) * LTE, 3G 440, 92 200 2017 3 : LTE, WiFi, 3G 440 (WiFi 369 ) SKT, KT, LGU + LTE 133.43Mbps('16 120.09Mbps) 11.1%, 34.04Mbps('16 41.83Mbps) 18.6% 3G ('16 5.59Mbps '17 5.24Mbps) 264.86Mbps('16 144.73Mbps) 83%, 286.73Mbps('16 115.98Mbps) 101.1% '15~'16 56 44 100% (500Mbps, 1Gbps) (16 603) (,,, ) KT, LGU +, SKB,,, CJ KT, LGU +, SKB,,, CJ (2G, 3G, VoLTE) (92 ) SKT, KT, LGU + 6 500Mbps 469.31Mbps, 434.84Mbps 3 : LTE, WiFi, 3G 200 (WiFi 369 ) SKT, KT, LGU + SKB, KT, LGU +, 1Gbps 873.81Mbps, 841.06Mbps (100Mbps ) KT, LGU +, SKB,,, CJ (2G, 3G, VoLTE) 250 SKT, KT, LGU + 1 : LTE ( ) ( ) 16 SKT, KT, LGU + VoLTE 99.58% 3G 99%, 2G 97.04% LTE 133.43Mbps 264.86Mbps 100%(44 44) '17 10 3G, 99%, LTE 19.39% 08 09

2017 () CONTENTS 2017 LTE 2017 ( : mbps) (Dl) 34.04 Mbps (ul) LTE 3G WiFi 133.43 120.09 5.59 5.24 144.73 264.86 05 07 2017 08 133.43Mbps LTE '16 '17 '16 '17 LTE '16 '17. 14. 25. 30 196.18mbps 38.19mbps 98.84mbps 16.31mbps 54.75mbps 12.23mbps 51.01mbps 14.74mbps 01. 34 (Dl) 133.43Mbps 34.04Mbps 160.82mbps 49.85mbps 133.88mbps 31.47mbps 95.21mbps 18.21mbps (Dl) 56.11Mbps 15.99Mbps 60.56mbps 19.51mbps 91.94mbps 25.95mbps 2017. 40. 42. 44 취약지역 841.06Mbps (ul) 02. 46. 48 VOLTE 95.48% 93.77% 3G 86.87% 80.84% 2G 84.78% 76.81% GIGA 873.81Mbps 5. 60. 61. 75 99.12Mbps VOLTE 99.58% 99.19% '15~'16 행정동 ( 개 ) 취약지역 ( 개 ) 24 20 24 20 03 2017 04. 78. 79 99.08Mbps 3G 2G 99.00% 98.75% 97.04% 94.47% 44 2017 44 05 81 82 10

www.nia.or.kr 2017 01. 14. 25. 30. 34 COMMUNICATION SERVICE STATUS AND COVERAGE INFORMATION DISCLOSURE STATUS

lte 2017. 1. LTE 3 (WCDMA) LTE(Long Term Evolution) 4G. ITU(International Telecommunication Union, ) 4 1Gbps, 100Mbps. LTE. 2016 700MHz(40MHz ), 1.8GHz(20MHz ), 2.1GHz(20MHz ), 2.6GHz(40MHz ), 2.6GHz(20MHz ) 4 5 140MHz, 700MHz 4 2 1,106 100MHz. [ 1-2] 2016 [ 1-1] 1G 2G 3G 4G GSM CDMA WCDMA CDMA2000 LTE/ LTE-Advanced - (2) A (700 ) B (1.8 ) C (2.1 ) D (2.6 ) E (2.6 ) 7,620 4,513 3,816 6,553 3,277 40MHz 20MHz 20MHz 40MHz 20MHz 2 5,779-14.4~64kbps 144kbps~2Mbps 100Mbps~1Gbps / / / / / 10 10 5 10 10-4,513 3,816 9,500 3,277 2 1,106 KT LGU + SKT SKT LTE LTE., LTE... 2016 LTE 260MHz 340MHz (LGU + 20MHz SKT ). LTE. lte 340mhz : SKT 135MHz, KT 105MHz, LGU + 100MHz 14 15

lte 2017. [ 1-3] lte SKT KT LGU + DL 10MHz 5MHz 10MHz 850MHz UL 10MHz 5MHz 10MHz DL 10MHz 900MHz UL 10MHz DL 20MHz 30MHz(20+10MHz) 1.8GHz UL 15MHz 25MHz(15+10MHz) LTE-A LTE 150Mbps. LTE-A 2. LTE-A. LTE. LTE-A. 2.1GHz DL 10MHz 10MHz 20MHz UL 10MHz 10MHz 20MHz [ 1-1] lte, lte, lte-a(ca) 75Mbps 150Mbps 2.6GHz DL 30MHz 20MHz UL 30MHz 20MHz DL 70MHz 55MHz 50MHz UL 65MHz 50MHz 50MHz 10MHz LTE 20MHz LTE 10MHz + 10MHz LTE-A (CA) LTE 2009 12 2011 5 7. LTE 75Mbps, 37.5Mbps.. (CA : Carrier Aggregation) 2 LTE-A LTE 2013. LTE-A (10MHz) LTE 2 150Mbps ( ) 1.5 3G 10. LTE 20MHz 10MHz LTE LTE 2. 2014 LTE-A. LTE-A 20MHz 10MHz CA 225Mbps LTE 3, LTE LTE-A 1.5. 2015 3 3Band LTE-A. 3Band LTE-A LTE 1 2 300Mbps. 2015 SKT 3G 20MHz LTE, 2016 2 2 CA 300Mbps., 5 LTE 5Band CA. 5Band CA LTE 525Mbps LTE 75Mbps 7. 16 17

lte 2017. [ 1-4] lte LTE 10MHz 75Mbps 2Band CA 3Band CA 4Band CA 40MHz(20MHz+20MHz) 30MHz(20MHz+10MHz) 50MHz(20MHz+20MHz+10MHz) 40MHz(20MHz+10MHz+10MHz) 60MHz(20MHz+20MHz+10MHz+10MHz) 50MHz(20MHz+10MHz+10MHz+10MHz) 225~300Mbps 300~375Mbps 375~450Mbps 5Band CA 70MHz(20MHz+20MHz+10MHz+10MHz+10MHz) 525Mbps 4G LTE 2011 119 2.3%. LTE, LTE. 2012 5,362 2013 5,467 2014 5,721, 2015 5,373, 2016 5,492, 2017 5,512. [ 1-5] (: ) 2013 2014 2015 2016 2017 SKT 2,735 2,861 2,668 2,720 2,675 LTE. 256 (QAM) (4 4 MIMO).,. LTE 64 6(bit). 256 8, 33%. CA LTE 300Mbps, 256 400Mbps. LTE, LTE 2 2 2 MIMO. 4 4 MIMO 2 4 2. 10MHz LTE 75Mbps, 4 4MIMO, 150Mbps. 256, 4 4 MIMO LTE. KT 1,645 1,733 1,626 1,667 1,603 LGU + 1,087 1,127 1,073 1,105 1,234 5,467 5,721 5,367 5,492 5,512 : (, 2018.1) LTE 2011 2017. 2011 119 3 LTE 2012 1,581 LTE-A LTE 2013 2,845 2. 2015 4,169, 2016 4,631, 2017 LTE 5 5,044 2011 42. [ 1-6] lte (: ) 2013 2014 2015 2016 2017 LTE 2,845 3,608 4,169 4,631 5,044 : ( ) 18 19

3G 2017. 2. 3G 3G 3, (ITU: International Telecommunication Union) IMT-2000. 3G 2GHz, 128Kbps 2Mbps. 3 WCDMA CDMA-2000. WCDMA, CDMA-2000,.. [ 1-7] 3G WCDMA CDMA 2000 X O 80% 20%, CDMA 1, 2 3, 2Mbps. 3G 2002 2003 12 WCDMA. 2 3. SKT KT, LGU +. 2003 WCDMA. 2011 LTE 2012. 2011 3,550 2012 2,706 LTE 119 1,581. 2013 1,849 2014 1,149, 2015 795, 2016 2015 156 639, 2017 88 550. WCDMA LTE. 3G SKT, KT LGU + [ 1-8] WCDma (: ) 2013 2014 2015 2016 2017 3GPP WCDMA 2.1GHz. WCDMA SKT KT 2.1GHz LGU + Ev-Do rea 1.8GHz. SKT 2015 8 WCDMA 2.1GHz 20MHz LTE. SKT 991 649 492 402 322 KT 858 500 303 236 228 1,849 1,149 795 638 550 : ( ) 20 21

WiBro 2017. 3. WiBro WiBro Wireless() Broadband( ). 2006. IP () 75Mbps, 25Mbps. 3 (3G) 6. WiBro 2002 10 2.3GHz. WiBro 2004 4 WiBro. (ETRI) 2004 WiBro KT SKT 2006 6. WiBro LTE 2013. 2017 WiBro 1%. [ 1-2] WiBro WiFi - WiMAX linkage security and Qos Pleasant-to-use and portable multimedia communication WiFi - WiMAX converter internet 2006 WiBro 2007 (ITU) 3. 2007 10 7. mobile WiMAX (802.16e) 2011 80 2012 25 105. 2011 LTE 2013 99 2014 87 CPE type Spot type 12, 2015 78 9, 2016 58, 2017 31 Wifi products (802.11a/b/g) Wireless access point BS. [ 1-9] WiBro (: ) 2013 2014 2015 2016 2017 WiBro SKT KT 2.3GHz., 60Km. WiFi 2.4GHz CDMA2000-1x EV-DO,., WiBro. SKT 14 12 9 8 5 KT 85 75 69 50 26 99 87 78 58 31 : ( ) 22 23

Wifi 2017. 4. WiFi WiFi IEEE 802.11. WiFi AP(Access Point). ISM(Industrial Scientific and Medical),,,,. ISM 13.553~13.567MHz, 26.975~27.283MHz, 40.66~40.70MHz, 2.4~2.48GHz, 5.725~5.875GHz, 900MHz, 2.4GHz, 5GHz. WiFi 2.4GHz 5GHz. 2000 WiFi. WiFi WiFi WiFi. WiFi. 1997 IEEE 802.11 2Mbps 1999 IEEE 802.11b 11Mbps. 2009 IEEE 802.11n. 150Mbps MIMO(Multiple-Input and Multiple-Output) AP 600Mbps. 2014 802.11ac WiFi. 802.11ac 433Mbps MIMO 6.93Gbps. 1. 1994 1Gbps 2014 10. FTTx, HFC, LAN 100Mbps 1Gbps 4GB 1,000 35.,,,., UHDTV,,, IPTV, TV. 5G 1Gbps 2Gbps, 2.5Gbps, 5Gbps, 10Gbps 10Giga. [ 1-3] Internet Layer 3 OLT Central office RN Gam : G.hn Access, Mutiplexer PSTN MDF GAM Epon uplink 1pair 1pair 1pair G.hn G.hn G.hn fttp (fiber tothe phon line) Copper EPON Point to point 200~300Mbps 24 25

2017. (100Mbps). KT, LGU +, SKB,,, CJ, HcN 10 1Gbps. 2014 5 23 Giga City 2017 85. HFC (network hybrid fiber-coax network) FTTH (fiber to the home) [ 1-4],,, 2014 10 KT Giga SKB, LGU + UTP ONT fiber Gbps ftth Dimensioning 32 ONTs per PON port 20 PON ports per OLT 640 ONTs per OLT (5,000 ONT per OLT~planned). 2013 28 16.8% 2014 53 36.15%, 2015 68 60.01%, 2016 85 90%, 2017 85 100%. Home 100Mbps ONT fiber Splitter(1:8) Splitter(1:4) Splitter(1:4) E-pon Gbps Splitter(ONTs) Gbps IP 2. utp 100Mbps UTP L2 Migration 100Mbps ONUs UTP OLT GE GE L3 SW nxge BRAS 2Mbps xdsl, LAN, FTTH 100Mbps. xdsl (x Digital Subscriber line),, GE L3 100Mbps VDS DSLAMs UTP GE L3 Migration Gbps Splitter (1:4) 100Mbps ONUs (VDSL) Gbps Splitter (1:4) Gbps Gbps E-pon: Ethernet Passive Optical Network G-pon: Gigobit Passive Optical Network olt : Optical Line Terminal onu : Optical Network Unit ont : Optical Network Terminal l3 SW : Layer 3 Switch GE : Gigabit Ethernet LAN (local area network) PC, OA 26 27

2017. 1998, 2006 2012,. xdsl,,, 80%. [ 1-10] 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 78.4 79.8 80.6 81.2 81.6 81.8 82.1 79.8 81.6 85.4 85.7. 2012 1,826 LAN > HFC > FTTH > xdsl >. 2013 47 1,873 2.57%. LAN > FTTH > HFC > xdsl. 2013 FTTH HFC. 2015 2 2013 FTTH LAN. 2016 LAN, FTTH, xdsl, HFC, 2017 2016 xdsl, HFC, LAN, FTTH. 79.6 80.4 80.9 81.4 81.8 81.9 82.3 80.6 78.2 77.1 75.3 [ 1-11] 2013 2014 2015 2016 2017 (: ) [ 1-5] 1,873 1,920 2,003 2,056 2,119 (%) 90 [ 1-12] (: ) 2013 2014 2015 2016 2017 85 84.4 85.7 xdsl 185 164 144 118 94 80 78.9 78.4 79.6 79.8 80.4 80.8 80.9 81.2 81.4 81.6 81.8 81.8 81.9 82.1 82.3 81.6 80.6 79.8 78.2 77.1 LAN 699 730 766 810 857 HFC 478 451 431 412 397 75 74.8 75.3 FTTH 511 575 662 716 770 : IV ( ) 70 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 28 29

volte 2017. 1. VoLTE 2012 8 VoLTE 3 VoLTE. VoLTE Voice Over LTE All-IP LTE GSMA. 2G 3G VoLTE. 2G 3G VoLTE. [ 1-6] 2G 3G volte (Circuit) (Packet).. ().., LTE LTE VoLTE. VoLTE VoIP( ) 2G/3G 2G/3G VoLTE VoLTE VoLTE. 2G/3G 2G/3G VoLTE VoLTE :, VoLTE 2012 8 SKT LGU +. 2012 10 KT 2015 6 VoLTE. 30 31

3G / 2G 2017. 2. 3G 3G 3 IMT-2000. 2 PCS 1996 2002 3. 3, 2Mbps. 2G CDMA 1996. 1990 2000 3 WCDMA CDMA2000. 2012 3 KT. 3G VoLTE. LTE, VoLTE 2015 VoLTE. 2G 3G VoLTE. 2011 1,581 2012 1,075. 2011 KT 3G LTE. 2013 775 2014 579, 2015 424, 2016 329. 3. 2G 2G 2 1993. 2 CDMA, GSM. [ 1-13] CDma (: ) 2013 2014 2015 2016 2017 SKT 396 327 246 198 115 KT - - - - - LGU + 379 252 178 131 95 775 579 424 329 210 CDMA : ( ) GSM, 32 33

2017. 2016 1 562 ( ) 2016 7 LTE, 3G, WiFi,...,,,. [ 1-7] lte KT,. 2015, 2016 7. 4 (LTE, 3G, WiFi, ). LTE (150Mbps ) LTE-A 3Band LTE-A SKT LTE 3G 300m~2KM, 75m 75m., LTE LTE LTE, 2Band CA, 3Band CA, LTE. LTE (150Mbps ) LTE-A 3Band LTE-A 34 35

2017. LGU + [ 1-9] Wifi KT SKT LGU + : LTE (150Mbps ) LTE-A 3Band LTE-A : [ 1-8] 3G LGU +. KT, LGU +., 3. [ 1-10] KT SKT LGU + KT SKT : : WiFi AP,, LTE, 3G. KT WiFi WiFi, SKT LGU +..,.,,. 36 37

www.nia.or.kr 2017 02 2017. 40. 42. 44. 46. 48 2017 COMMUNICATIONS SERVICES QUALITY EVALUATION OVERVIEW

2017..,,,. 56 2. 1999, 2G, 2011, (2G 3G, WiFi, WiBro) (IPTV, DCATV, ). 2012 LTE, 3G, WiFi, WiBro,,. 2012 LTE 3G. 56 ( ).. 2. 2013 ( LTE, LTE-A, 3G, Ev-Do rea, WiFi, WiBro),, 2014 ( LTE-A, LTE, 3G, Ev-Do rea, WiFi, WiBro),. 2014.,,,. 2015 LTE,. 2016 LTE, 3G, WiFi,, (2G 3G VoLTE)., WiBro, (100Mbps ), (2G 3G VoLTE). 2017 LTE, 3G, WiFi. WiFi,. 500M 1G, (2G, 3G, VoLTE)., 2017,. 40 41

2017..,..,. 2016 ( 562),.. 562( ). 1. 1. 562 (, 2016-82 ).,,,.,,... 2017. LTE, 3G, WiFi 100M. 42 43

2017. 2017, WiFi,, ()., (app), LTE.,,,,,,. 2017 WiFi 2016. 2017 WiFi 2016,, WiFi. 2016 282 87 369. 2016 LTE 2017. 2016 7, 2017 LTE 3G, WiFi, 100M. LTE 2016 42, 2017 200, 3G., WiFi,. 2017.. 2018. [ 2-1] 2017 3 : LTE, WiFi, 3G (500Mbps, 1Gbps) (2G, 3G, VoLTE) 3 : LTE, WiFi, 3G 440 (WiFi 369 ) (16 603) (,,, ) SKT, KT, LGU + KT, LGU +, SKB,,, CJ KT, LGU +, SKB,,, CJ (92 ) SKT, KT, LGU + 200 (WiFi 369 ) SKT, KT, LGU + SKB, KT, LGU + (100Mbps ) (2G, 3G, VoLTE) KT, LGU +, SKB,,, CJ 250 SKT, KT, LGU + 1 : LTE ( ) ( ) 16 SKT, KT, LGU + 44 45

2017.,,,. [ 2-1],,,, /,,, DB,,,,,,,,..,.,.,,,,,,, (KTX,, ),,,.,,,, (), ( ), ( ).,,. (www.smartchoice.or.kr).,, 46 47

2017. 1..,,,,,.,.,, 10. [ 2-2] [ 2-2], F/W NIA /DB, - BackBone -,,. 2017 LTE, LTE 6Mbps 2016 4Mbps 2Mbps., 90%. 2017 11,,,,,,,,, SNS,. 2017 S8+ 1. 2016 LG 2, 2016, 2017 LTE (5CA) S8 +, 2017 1.. 48 49

2017..,,,.,.,,,. [ 2-3] [ 2-4] [ 2-3] ( ) - 2017 (100Mbps ) (500Mbps, 1Gbps ).. S/W. 2. [ 2-5]. / IDC. 2016 (MDF), 2017... 2017,,, MSN,,,, ZUM, Bing, SNS,,. ( ) S/W.. 50 51

2017. [ 2-5]. 190Mbyte 50 5. (1Gbps ) 2014 10 2G 3G VoLTE. PC.. 2G 3G VoLTE 3..,,. 20 65. MOS(Mean Opinin Score) 2.2 1.9 2. 2.2 1.9. [ 2-4] 20 (65 ) (1 5 ) 2.2 1.9 2 (2.2:, 1.9: ) VoLTE, 3G S8 + 2G 2G,. VoLTE 3, 3G SK, KT. 2G SK LGU +.,...,,,.,.,,,.. 2017 2016 VoLTE, 3G, 2G. 52 53

2017. (20 ), (65 ), (15 ) 100. [ 2-6] 1 (100 ) 1 (100 ). LTE 3G,, ( ), RF Scanner. RF Scanner GPS, (75m 75m),. T1 T2 T3 T1 T2 T3 (20 ) (65 ) (15 ) (20 ) (65 ) (15 ) [ 2-7] SEND END SEND END 4.., 3G, LTE. (spot) WiFi. [ 2-6] WiFi,, LTE, 3G. WiFi. 2017 LTE, 3G, WiFi 100M. LTE, 3G WiFi, 54 55

/ 2017. 5. 6. LTE,,. 2017.,..,, 1~5 10. 3,300, 10%. ( : ) 1,,. [ 2-9], 1 12. [ 2-8] 1 2 10 (30 ) (10 ) (30 ) (10 ) (30 ) (10 ) 1 2 2 3 56 57

www.nia.or.kr 2017 통신서비스 품질평가 보고서 03 최근 5년간 통신서비스 품질평가 결과 가. 품질평가 결과종합 60 나. 서비스별 품질평가 분석 61 다. 품질평가 결과공개 75 2017 COMMUNICATIONS SERVICES QUALITY EVALUATION RESULTS

/ 2017.. 1. [ 3-1] 2013 2017 (: Mbps / ()) 2013 2014 2015 2016 2017 LTE 3Band-LTE-A LTE-A LTE LTE-A LTE(75M) 3G Ev-Do rea WiFi 500M 1G 2G 3G VoLTE - - 117.51 120.09 133.43 - - 26.84 41.83 34.04 - - 163.01 - - - - 26.84 - - - 114.4 108.39 - - - 26.9 26.84 - - 56.6(S) 77.8 67.55 - - 20.2(S) 26.9 26.84 - - 47.2(S) - - - - 15.5(S) - - - - 30.9(S) - - - - 17.3(S) - - - - 4.6(S) 5.1 4.75 5.59 5.24 1.8(S) 1.9 1.9 1.97 1.85 1.1(A) 1.1 0.88 1.07 0.94 0.5(S) 0.5 0.38 0.47 0.42 15.2(A) 26.9 91.87 144.73 264.86 15.2(S) 33.3 85.24 141.47 284.52 S 99.8 99.3 99.06 99.08 S 99.8 99.4 99.12 99.12 - - - - 469.31 - - - - 434.84 - - 923.04 895.70 873.81 - - 949.48 916.08 841.06 () - - 97.85 98.30 97.04 () - - 97.05 94.44 94.47 () 99.0(S) 99.2 99.84 99.76 99.00 () 98.6(S) 98.5 99.42 99.48 98.75 () - 99.8 99.97 99.77 99.58 () - - - 99.67 99.19 LTE LTE 2011 2012. 2012 LTE 2013 LTE-A LTE, 2014 LTE-A. 2015 3Band LTE-A LTE. 2016 3Band LTE-A, LTE-A LTE, LTE LTE. 2017 2016 LTE LTE, 133.43Mbps, 34.04Mbps. 2017 2016 LTE 2016, 2016 2016 11%. ( ), 18%. * 2012 13 2014 * (S( ): 97.5%, A(): 97.5~95%, B(): 95~90%, C():90~85%, D( ): 85% ) 60 61

2017. [ 3-2] LTE (: Mbps/) 2013 2014 2015 2016 2017 - - 117.51 120.09 133.43 LTE, 3G - - 26.84 41.83 34.04 - - 163.01 - - 3Band-LTE-A - - 26.84 - - - 114.4 108.39 - - LTE-A - 26.9 26.84 - - 56.6(S) 77.8 67.55 - - LTE 20.2(S) 26.9 26.84 - - 47.2(S) - - - - LTE-A 15.5(S) - - - - 30.9(S) - - - - LTE(75M) 17.3(S) - - - - :, 2013 LTE 56.6Mbps S, 20.2Mbps S. LTE-A LTE 47.2Mbps S, 15.5Mbps S. LTE LTE-A 150Mbps CA LTE-A LTE. 2014 LTE-A LTE. LTE-A 114.4Mbps, 26.9Mbps. CA. 2015 LTE. 117.51Mbps, 26.84Mbps 2015 3Band LTE-A 163.01Mbps, 26.84Mbps. 2016 LTE LTE LTE, 120.09Mbps, 41.83Mbps. 2017 2016 LTE, 133.43Mbps, 34.04Mbps. 2012 LTE, 2013 LTE,. 5. [ 3-1] 2017 LTE (DL) 133.43Mbps 2017 LTE [ 3-3] S( ) A() B() C() D( ) 34.04 Mbps (UL) 97.5% 97.5% 95% 95% 90% 90% 85% 85% : 2013, 62 63

2017. SKT 163.92Mbps, KT 131.03Mbps, LGU + 105.34Mbps. 157.09Mbps, 144.94Mbps, 99.63Mbps 63%. [ 3-4] 2017 LTE (Mbps) (ms)/ (%) (%) (%) 133.43 34.04 36.35 1.33 99.21 99.80 SKT 163.92 38.41 37.92 1.50 99.97 99.84 99.84 99.79 KT 131.03 30.13 35.18 1.25 99.71 LGU + 105.34 33.56 35.94 98.03 : 2017, 2017 LTE ().,,,,, 2014,,. 2014. 2015 50, 2016 78, 2017 90. [ 3-6] 2017 LTE (: Mbps) 133.43 34.04 160.82 49.85 98.84 16.31 183.28 39.65 2017 LTE 133.43Mbps. LTE 1.9. [ 3-5] 2017 LTE (Mbps) (Mbps) 30.05 13.78 98.80% 98.80% 91.06% 43.18 26.06 99.41% 99.02% 96.24% 204.47 47.06 133.44 29.35 113.59 26.06 136.90 30.85 151.58 39.63 (+ ) 172.78 45.91 KTX 95.21 18.21 196.18 38.19 225.73 46.66 56.11 15.99 69.56 26.87 99.80% 99.41% 99.67% 42.32 10.31 98.10% 99.00% 96.67% 37.06 12.93 99.11% 99.62% 97.10% 54.75 12.23 51.01 14.74 60.56 19.51 91.94 25.95 34.63 18.05 98.75% 98.57% 90.12% 41.26 13.36 99.32% 99.92% 96.26% 43.98 17.71 99.15% 99.98% 90.05% LTE 133.43 33.04 99.21% 99.80% 99.58% : LTE (KTOA, 2017.12), (,,,,, ),, KTX. LTE 56.11Mbp 2016 58.31Mbps, 15.99Mbps 2016 18.74. 64 65

2017. 3G Ev-Do rea 3G WCDMA 14.4Mbps, 5.7Mbps Ev-Do rea CDMA2000 3.1Mbps, 1.8Mbps. [ 3-7] 3G Ev-Do rea (: Mbps/) 2013 2014 2015 2016 2017 4.6(S) 5.1 4.75 5.59 5.24 3G 1.8(S) 1.9 1.9 1.97 1.85 1.1(A) 1.1 0.88 1.07 0.94 Ev-Do rea 0.5(S) 0.5 0.38 0.47 0.42 3G 2012 A, S. 2013 4.6Mbps S, 1.8Mbps S. 2014 5.1Mbps, 1.9Mbps. 2015 0.35Mbps 4.75Mbps, 1.9Mbps. 3G 2015 2014, 2016. 2017 2016. 2017 3G 5.24Mbps, 1.85Mbps. SKT 3G 5.91Mbps, 2.22Mbps, KT 4.57Mbps, 1.48Mbps. Ev-Do rea 2013 1.1Mbps A, 0.5Mbps S. 2014 1.1Mbps, 0.5Mbps, 2015 0.88Mbps, 0.38Mbps. Ev-Do rea 2015, 2016 1.07Mbps, 0.47Mbps. 2017 2016 0.94Mbps, 2016 0.42Mbps. [ 3-8] 2017 3G 3G 2013 2017 WiFi WiFi [ 3-9] WiFi (Mbps) (ms)/ (%) (%) (%) 5.24 1.85 77.88 0.64,, (Zone),,, (Zone) 99.32 98.46 SKT 5.91 2.22 71.85 0.50 99.67 99.25 99.99 99.99 KT 4.57 1.48 83.91 0.78 98.98 97.66 EV DO LGU + 0.94 0.42 119.51 1.19 93.50 92.51 WiFi WiFi 2016 WiFi. 2017 WiFi, WiFi WiFi, (27 ) WiFi. WiFi,,, (Zone) 2012. : 2017, WiFi WiFi, WiFi. 2017 WiFi. WiFi WiBro, Wibro 2017 WiBro LTE WiFi. SKT, KT, LGU + SKT, KT, LGU +,, WiFi WiFi SKT, KT, LGU +, 66 67

2017. 5 WiFi. [ 3-11] 2017 WiFi [ 3-10] WiFi (: Mbps/) 2013 2014 2015 2016 2017 15.2(A) 26.9 91.87 144.73 264.86 WiFi 15.2(S) 33.3 85.24 141.47 284.52 WiFi 2010 2011 WiFi Zone. 2013 WiFi, 15.2Mbps A, 15.2Mbps S. 2014 26.9Mbps 11.7Mbps 33.3Mbps 2. 2015 WiFi WiFi WiFi. 2015 WiFi 2014. 2015 WiFi 91.87Mbps, 85.24Mbps 64.97Mbps, 51.94Mbps. 2016 WiFi 144.73Mbps, 141.47Mbps. 2017 AP 83% 264.86Mbps, 101.1% 284.52Mbps. SKT 323.60Mbps, KT 356.02Mbps, LGU + 102.09Mbps. (Mbps) (ms)/ (%) (%) (%) 264.86 284.52 19.19 0.44 99.64 99.70 SKT 323.60 330.26 19.59 0.19 99.95 99.96 99.81 99.91 KT 356.02 406.75 16.39 LGU + 102.09 101.63 21.82 0.97 99.26 99.24 : 2017, 2016 WiFi 99. WiFi 115.98Mbps, 113.76Mbps. 2017 WiFi WiFi 286.73Mbps, 296.86Mbps. [ 3-12] WiFi (: Mbps) 2016 2017 115.98 286.73 WiFi 113.76 296.86 2017 WiFi WiFi. 2017 WiFi 263.09Mbps, 266.9Mbps. WiFi 2017 WiBro LTE, AP AP WiFi. 2016 5.44Mbps, 2017 51.53Mbps 2016 847.2%, 2016 4.71Mbps 2017 18.73Mbps 297.7%. 68 69

2017. 2017 2015 2016 90% 56 44. 24 24, 20 20. [ 3-13] () (%) (36 ) 24 24 100 (20 ) 20 20 100 (56 ) 44 44 100 [ 3-14] (: Mbps / ()) 2013 2014 2015 2016 2017 S 99.8 99.3 99.06 99.08 (100M ) S 99.8 99.4 99.12 99.12 - - - - 469.31 500M - - - - 434.84 - - 923.04 895.70 873.81 1G - - 949.48 916.08 841.06 2012 ~2013 5. [ 3-15] 2017 15, 2015 2016 12 2017. ( ) S( ) A() B() C() D( ) 95Mbps 95Mbps 85Mbps 85Mbps 70Mbps 70Mbps 50Mbps 50Mbps 2. (100Mbps ) (1Gbps ). 2007 2015. 2017 500M, 1G. 500M 100Mbps 2017. 2012 ~2013 S. 2014 99.8Mbps 2015 99.3Mbps, 99.4Mbps, 2016 99.06Mbps, 99.12Mbps. 2015 2014 1Gbps 1Gbps 923.04Mbps, 949.48Mbps. 2016 1Gbps, 895Mbps, 916.08Mbps. 2017 500M 469.31Mbps, 434.83Mbp, 1G 873.81Mbps, 841.06Mbps. [ 3-2] 2017 1Gbps 841.06Mbps (UL) GIGA 873.81Mbps 70 71

/ 2017. 3. 4..,,.. 2013 99.0% S, 98.6% S. 2014 VoLTE VoLTE 99.8%. 3G 99.2% 0.2% 98.5% 0.1%. [ 3-16] (: %) 2013 2014 2015 2016 2017 () - - 97.85 98.30 97.04 2G () - - 97.05 94.44 94.47 () 99.0(S) 99.2 99.84 99.76 99.00 3G () 98.6(S) 98.5 99.42 99.48 98.75 () - 99.8 99.97 99.77 99.58 VoLTE () - - - 99.67 99.19 * 2015 2015 2G. 2G 97.32%, 95.12% 2G 85.50%, 76.42%. 3G 14 0.8% 98.40%, 96.82% 1.68%, VoLTE 99.85% 0.05%. 2016 2015 VoLTE. 2016 98.30%, 94.44%, 86.74%, 78.74%. 2017 VoLTE 95.48%, 93.77%, 3G 86.87%, 80.84%. 2G 84.78%, 76.81%., VoLTE 99.58%, 99.19%, 3G 99.00%, 98.75%, 2G 97.04%, 94.7%. 2016 1 2016 7 2016 7 LTE, 3G, WiFi,. LTE, 3G 2016 LTE 42. 2017 2016 200. 2016 42 20%, 19. 2017. LTE 200 19.39%, SKT 12.17%, KT 24.17%, LGU + 21.83%. 3G 200 100%. WiFi, WiFi LTE, 3G. WiFi, (). WiFi WiFi, WiFi, WiFi. WiFi 711 99.16%, WiFi 132 99.24%, WiFi 186 99.46%. 8,843 () 113 (1.28%) 98.72%. 72 73

2017. 5. 2017 NIA. 2017 1 1 ~11 30 27 A E,. A, 525Mbps. A 106.28Mbps, 26.75Mbps, 129.38bps, 25.01Mbps. [ 3-17] 2017,, 3.,.,,. () A( 525Mbps) B( 375Mbps) C( 225Mbps) D( 150Mbps) E( 75Mbps) 106.28 26.75 129.38 25.01 90.98 22.67 102.28 26.61 63.18 18.68 76.13 17.53 52.08 17.27 50.28 17,28 43.82 16.82 42.92 16.92 [ 3-3] 2017 : 1,.,,. 2017 25,236. 2018,, 30,000. : 2017, [ 3-4], 133.43Mbps, 129.38Mbps. www.smartchoice.or.kr www.data.go.kr 74 75

www.nia.or.kr 2017 04 2017. 78. 79 2017 COMMUNICATIONS SERVICES QUALITY EVALUATION RESULT ANALYSIS

/ 2017 2017. 2016, 2017,..,.,,. LTE,,,. 2017.., 2017 WiFi. WiFi WiFi WiFi. 2017 WiFi WiFi. WiFi WiFi., WiFi Wibro LTE. LTE WiFi. 2017. 2017 LTE 63.4%., 2018 5G 2019 5G,. 2017 WiFi. WiFi 2015 WiFi AP 1G. WiFi 2016 83%, WiFi 2016 101%. 10Giga, WiFi AP. 2017. 2017,,,,,,,, 110... 78 79

www.nia.or.kr 2017 05 2018 3.,., 3,. 3,. 2018.,. 2017. 2017,, MPTCP, 2018., IoT, 5G, 10Giga.,. 2011 LTE, LTE.,,, 2016. 2018. 81

/ 2013 2014 2015 2016 2017 2G QoS 3G 2GHz 3 IEEE 4G 5G LTE LTE-A LTE LTE-A 3Bnad LTE-A QAM WiFi WiBro VoLTE WCDMA CDMA 2000 ITU GSM CDMA 1Gbps, 100Mbps 4 28GHz 5 3G WCDMA, 75Mbps, 37.5Mbps WCDMA 5, 7 10MHz LTE 10MHz LTE (CA) 20MHz LTE LTE 2 20MHz 10MHz LTE 2 (CA) 20MHz 10MHz LTE 3 (CA), 4 4MiMO 4 HD(1920 1080) TV '4K (UHD)' TV 4 (LTE) CDMA IMT-2000 3 2G 2G IEEE 802.11 IEEE 802.11b IEEE 802.11n AP ISM MIMO FTTH FTTx HFC LAN xdsl UHDTV IPTV VoIP PCS IDC FTP MDF, Wi-Fi 11Mbps 150Mbps LAN,,,, UTP TV HD(1920 1080) TV '4K (UHD)' TV IP, 2.5, 2017 2017 통신서비스품질평가보고서 CA IMT-2000 3 MOS VR, 5 2018 5 31 Wireless, IoT Broadband IP FCC Ofcom ARCEP 2017. WIMAX Ev-Do rea (WiBro) 2 'CDMA EV-DO', 3 UDP ICMP,, IP (41068) 53 053-230-1773 (qos@nia.or.kr) 82

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