1 BYOD LAN 1 2 3 4 1 BYOD 1 Gb/s LAN BYOD LAN LAN Access Point (AP) IEEE 802.11n BYOD LAN AP wget iperf3 1 AP [2] 2 IEEE 802.11ac [3] AP 4 AV (207 m 2 ) ( 1 2 )[4, 5] AP Wave2 Aruba AP-335 Aruba LAN 7210 PoE Switch Juniper EX2200-24P ( 3) PoE Switch 1 Gb/s AV 5GHz W56 AP 20 MHz (100 104 108 116 ) LAN AP 20 MHz 80 MHz ( 80 MHz 160 MHz) 1 fukuda@isc.kyutech.ac.jp 2 hatase@isc.kyutech.ac.jp 3 tomisige@isc.kyutech.ac.jp 4 toyohiro@isc.kyutech.ac.jp 13
AV 1000 BASE-T LAN 90 IEEE 802.11ac USB (3 ) LAN (IEEE 802.1X ) LAN 12 90 AWS (Amazon Web Services) AP 3 USB wget iperf3 wget 40 MBytes 2 wget 40 MBytes (wget) = ( 40 MBytes 8 bit) 90 LAN 40 MBytes wget 3 918.59 Mb/s iperf3 AWS TCP 300 10 280 1 3 12 90 AWS ( ) 1 AP AP 2 4 IEEE 802.11ac 80 MHz 160MHz AP 3.1 (AP x 4 12 90 ) AP 4 (W56 ) 12 90 4 5 4 5 iperf3 5 iperf3 wget 40 MBytes CSMA/CA [6] 1 90 wget iperf3 1 Mb/s AWS wget iperf3 14
特集 1 図 1: AV 講義室 図 2: AV 講義室内の端末 15 九州工業大学 情報科学センター 広報 第 30 号 2018.3
3: LAN 1: HPE Aruba 7210, AP-335 3x3 MIMO wave2 W56 (100ch, 104ch, 108ch, 112ch AP ) USB NEC PA-WL900U BUFFALO WI-U3-866DS, I-O DATA WN-AC867U (2x2 MIMO) HP ProLiant DL360 Gen9 Intel(R) Xeon(R) CPU E5-2660 v3 @ 2.60GHz, Memory 64 GB, VMware ESXi 5.1.0, OS Ubuntu Linux Server (Ubuntu 5.4.0-6ubuntu1 16.04.5), CPU 1vCPU, 8192 MB Amazon EC2, ap-northeast ( ), m4.large / 2vCPU (2.3 GHz Intel Xeon(r) E5-2686 v4), 8GB RAM, gp2 (100IOPS) / 30GB, DELL OPTIPLEX 9020, Intel(R) Core(TM) i3-4130 CPU @ 3.40GHz, Memory 8 GB, OS Ubuntu 16.04 LTS (Ubuntu 5.4.0-6ubuntu1 16.04.4) wget 40 MBytes iperf3 300 TCP 16
4: (wget) AWS 100 IOPS LAN 60 wget AWS 2 iperf3 1 6 6 wget iperf3 iperf3 TCP wget 40 MBytes iperf3 6 (wget 1 60 ) 6.5 ( 2.24 Mb/s 14.42 Mb/s) 3.2 AP (2 4 ) AP 1 [7] 1 AP 50 BYOD 1 AP AP 2 3 4 7 8 7 wget 12 AP 2 4 80 90 % 36 AP 2 60 90 10 % 20 % 17
5: (iperf3) 6: (AWS ) iperf3 8 36 AP 2 AP AP 2 AP 3 4 9 9 36 AP 1.5 2 60 AP 3 4 2 90 AP 2 71.87 Mb/s 4 220.25 Mb/s 3 2 1 AP 30 18
7: AP (wget) 8: AP (iperf3) AP 1 AP 30 Windows Update ios update LAN 3.3 [8] 19
9: (iperf3) LAN 80 MHz 160 MHz AP 2 80 MHz (AP 20 MHz 40 MHz) 10 11 10 wget AP 2 11 iperf3 AP 4 3.1 iperf3 AP CSMA/CA 40 MHz AP 1 AP 60 160 MHz (AP 40 MHz 80 MHz) 12 13 12 13 160 MHz AP 4 80 MHz AP 2 wget 90 OmniPeek 100 50 14 14 80 MHz 80 % 400 Mb/s 23 % 1 AP 80 MHz 2 AP AP 40 MHz 4 AP CSMA/CA 2 1 AP 40 MHz 80 MHz 20
2: AP AP 80 MHz 2 (40 MHz 2) 4 (20 MHz 4) 160 MHz 2 (80 MHz 2) 4 (40 MHz 4) BYOD LAN 40 MHz AP LAN 21
10: (wget, 80 MHz) 11: (iperf3, 80 MHz) 22
12: (wget, 160 MHz) 13: (iperf3, 160 MHz) 23
14: (wget, 160 MHz, channel 100) 4 BYOD LAN LAN AP 1 AP 30 80 MHz 160 MHz 1 AP 40 MHz 80 MHz BYOD LAN 1 AP 30 AP 40 MHz LAN BYOD LAN [1] : BYOD LAN,, 80 2D-01, 2018. 24
[2] : BYOD LAN, ( 40 ) 2018.03.05. [3] IEEE : IEEE Standard for Information technology Telecommunications and information exchange between systemslocal and metropolitan area networks Specific requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications Amendment 4: Enhancements for Very High Throughput for Operation in Bands below 6 GHz, IEEE 802.11ac- 2013, 2013. [4] : ( ) Vol. 2015-IOT-28, No. 20, pp. 1-6, 2015.03.06. [5] : LAN ( ) Vol. 2015-IOT-28, No. 21, pp. 1-6, 2015.03.06. [6] G. Bianchi, Performance analysis of the IEEE 802.11 distributed coor- dination function, IEEE Journal on Selected Areas in Communications, vol. 18, pp. 535 547, March 2000. [7] : mpage,,, Vol.2010-CLE-2, No.8, pp.1-8, 2010. [8] : LAN ( ) Vol. 2016-IOT-32, No. 1, pp. 1-8, 2016.03.03. 25