WIDE Technical-Report in 20142013 年 WIDE 秋合宿における無線 LAN による位置情報取得実験報告
wide-tr-sirokuma-rtls-00.pdf

PROJECT

WIDE Project : http://www.wide.ad.jp/

If you have any comments on WIDE documents, please contact toboard@wide.ad.jp

Title:Author(s):Date:2013 年 WIDE 秋合宿における無線 LAN による位置情報取得実
験報告
藤枝俊輔 (sirokuma@k.u-tokyo.ac.jp),camp1309pc 一同（camp1309-pc@wide.ad.jp）
2014-01-06

2013 ᖺ WIDE ⛅ྜᐟ࡟࠾ࡅࡿ↓⥺ LAN ࡟ࡼࡿ఩⨨᝟ሗྲྀᚓᐇ㦂ሗ࿌
⸨ᯞಇ㍜㸦sirokuma@k.u-tokyo.ac.jp㸧, camp1309pc ୍ྠ㸦camp-1309-pc@wide.ad.jp㸧
ᖹᡂ 26 ᖺ 1 ᭶ 6 ᪥
1. ࡣࡌࡵ࡟
1.1 ᐇ㦂ᴫせᮏᐇ㦂࡛ࡣࠊྜᐟᆅ࡟࠾࠸࡚↓⥺ LAN ㏻ಙ࠿ࡽ➃ᮎ఩⨨ࢆ᥎ᐃࡍࡿ㐠⏝ᐇ㦂ࢆ⾜ࡗࡓࠋ㏆ᖺࠊᒇෆ࡟࠾ࡅࡿ
఩⨨᝟ሗࡸ⾜ືᒚṔࢆᢕᥱࡍࡿࡓࡵ࡟ࠊᑓ⏝ᶵჾ୙せ࡛↓⥺ LAN ࡢ㟁Ἴ᳨ฟࢆ฼⏝ࡍࡿࣜ࢔ࣝࢱ࢖࣒఩⨨᝟ሗࢩࢫࢸ࣒(Real Time Location Systemࠊ௨ୗ RTLS)ࡢ㛤Ⓨࡀ㐍ࡳࠊ⑓㝔ࡸ✵ ࡞࡝ேࡢືࡁࢆᢕᥱࡍࡿ㟂せࡀ㧗࠸ሙᡤ࡛฼⏝ࡀጞࡲࡗ࡚࠸ࡿࠋRTLS ᢏ⾡ࡢືྥࢆᢕᥱࡋࠊ௒ᚋ◊✲฼⏝ࡍࡿࡓࡵ࡟ࠊᕷ㈍ࡉࢀ࡚࠸ࡿ RTLS ࢆWIDE ྜᐟ఍ሙ࡛㐠⏝ࡋࡓࠋྜᐟᆅࡢࣉࣞࢼ࣮ࣜ࣍ࣝࠊ࣮࣡ࢡࢩࣙࢵࣉ఍ሙࠊ఍㆟ᐊࠊࡑࢀࡽࢆ⤖ࡪᗯୗࢆᑐ㇟࡟ࠊྜᐟཧຍ⪅ࡀᣢࡘ↓⥺ LAN ➃ᮎࡢ᥎ᐃ఩⨨ࢹ࣮ࢱࢆ཰㞟ࡋࡓࠋ཰㞟ࡋࡓࢹ࣮ࢱࡣࠊ⏕ࢹ࣮ࢱ࡜ࡋ࡚ camp-net
࠿ࡽྜᐟཧຍ⪅࡟ᥦ౪ࡋࠊ
“↓⥺ LAN ࠸ࢁ࠸ࢁ࣮࣡ࢡࢩࣙࢵࣉ”➼࡟࠾࠸࡚ཧຍ⪅ࡢ⮬⏤࡞ゎᯒ࣭฼⏝ࡀ࡛ࡁࡿࡼ࠺࡟ࡋࡓࠋ
1.2 ᐇ㦂ࡢ┠ⓗᮏᐇ㦂ࡢ┠ⓗࡣࠊࡇࢀࡲ࡛⑓㝔ࡸ✵ ࡜࠸ࡗࡓ≉Ṧ࡞㟂せ࡟ᛂࡌ࡚฼⏝ࡉࢀ࡚ࡁࡓᒇෆ఩⨨᝟ሗࢆࠊỗ⏝ࡢ↓⥺࢖ࣥࣇࣛ࠿ࡽ⡆༢࡟ྲྀᚓࡋࡓሙྜ࡟ࠊ࡝ࡢࡼ࠺࡞⎔ቃࡀᚲせ࡛ࠊ࡝ࡢ⛬ᗘࡢ⢭ᗘࡀᮇᚅ࡛ࡁࡿ࠿ࢆᢕᥱࡋࠊ௒
ᚋࡢ฼⏝᳨ウ࡟Ⓨᒎࡉࡏࡿࡇ࡜࡛࠶ࡿࠋࡑࡢࡓࡵࠊ௒ᅇࡣ௨ୗࡢ᝟ሗᢕᥱࢆ┠ⓗ࡜ࡋ࡚࠸ࡿࠋz

RTLS ࡢᢏ⾡せ⣲ࠊࢩࢫࢸ࣒ࠊᶵ⬟ࡢᢕᥱz

RTLS ࢆືసࡉࡏࡿ↓⥺ LAN ࢖ࣥࣇࣛࡢᵓ⠏᮲௳ࡢㄪᰝz↓⥺ LAN ࡟ࡼࡿ RTLS ࠿ࡽᚓࡽࢀࡿࢹ࣮ࢱ⢭ᗘ

2. ᐇ㦂⎔ቃ
2.1 RTLSᮏᐇ㦂࡛⏝࠸ࡓ RTLS ࡛ࡣࠊ➃ᮎࡢ㏦ಙಙྕࢆ」ᩘࡢ AP㸦Access Point㸧࡛ཷಙࡋࠊྛ AP ࡟࠾ࡅࡿཷಙಙྕᙉᗘ㸦Received Signal Strengthࠊ௨ୗ RSS㸧࠿ࡽ➃ᮎ఩⨨ࢆ᥎ᐃࡍࡿࠋRSS ᪉ᘧࡣ㐽ⶸ≀࡟ࡼࡿῶ⾶ࠊ㞧㡢ࠊ࣐ࣝࢳࣃࢫ࡞࡝ࡢᙳ㡪ࢆཷࡅࡸࡍ࠸ࡀࠊ఩⨨᥎ᐃ᪉ᘧࡢ୰࡛ࡣ᭱ࡶ⡆᫆࡟ᐇ⌧࡛ࡁࠊ᳨ฟᑐ㇟ࣀ࣮ࢻ࡟ࡣ୍⯡ࡢ↓⥺ LAN ➃ᮎࢆ฼⏝࡛ࡁࡿࠋ௒ᅇ฼⏝ࡋࡓࢩࢫࢥ♫ࡢ RTLS ࡛ࡣࠊ↓⥺ LAN ➃ᮎࡀ㏦ಙࡍࡿࣉ࣮ࣟࣈࣜࢡ࢚
ࢫࢺࢆ఩⨨᳨ฟࡢᑐ㇟࡜ࡋ࡚࠸ࡿࠋᅗ 1 ࡢࡼ࠺࡟ࠊAP ࡣ➃ᮎ࠿ࡽࡢಙྕࢆ᳨ฟࡍࡿ࡜ࠊࡑࡢ RSS ࢆ WLC
㸦Wireless LAN Controller㸧࡟㏦ࡾࠊWLC ࡣ㞟⣙ࡋࡓ RSS ᝟ሗࢆ MSE㸦Mobility Service Engine㸧࡟Ώࡍࠋ
MSE ࡣ」ᩘࡢ AP ࡀሗ࿌ࡋࡓ RSS ࠿ࡽ➃ᮎࡢ┦ᑐ఩⨨ࢆィ⟬ࡍࡿࠋRSS ᪉ᘧࡣཎ⌮ⓗ࡟ࡣ 3 Ⅼ ఩࡛࠶ࡾ᭱ప
3 ྎࡢ AP ࡛ಙྕࢆ᳨ฟࡍࡿᚲせࡀ࠶ࡿ㸦ᅗ 1 ࡛ࡣ 4 ࡘࡢ AP ࡀ➃ᮎ࠿ࡽࡢಙྕࢆཷಙࡋ࡚࠾ࡾࠊཷಙ AP ᩘࡀከ࠸࡯࠺ࡀ⢭ᗘࡀྥୖࡍࡿ㸧
ࠋRSS ᪉ᘧ࡛ࡣࠊᒇෆ࡟࠾ࡅࡿ㐽ⶸ≀ࡸ཯ᑕࡀ RSS ࡟ᙳ㡪ࡍࡿࡓࡵࠊ᳨▱ᑐ㇟࡜ࡍࡿ࢚ࣜ࢔ࡢ≀⌮᝟ሗࢆ఩⨨ィ⟬࡟ྵࡵࡿࡇ࡜ࡀᮃࡲࡋ࠸ࡀࠊ᫬㛫ⓗ࡞ไ⣙࡜ࠊヲ⣽࡞≀⌮᝟ሗ㸦࡝ࡢቨࡸᰕࡀఱdB ῶ⾶ࡍࡿ࠿㸧ࢆࡃࡲ࡞ࡃྲྀᚓࡍࡿࡇ࡜ࡣᅔ㞴࡛࠶ࡾࠊࡲࡓ୙᏶඲࡞≀⌮᝟ሗࡀࢹ࣮ࢱࢆṍࡲࡏࡿࡇ࡜ࢆ㑊ࡅࡿࡓࡵࠊ௒ᅇࡣ࢚ࣜ࢔ࡢ≀⌮᝟ሗࡣྵࡵࡎ࡟ᐇ㦂ࢆ⾜ࡗࡓࠋᅗ 1㸸ᐇ㦂࡛⏝࠸ࡓࢩࢫࢥ♫ࡢ RTLS ࢩࢫࢸ࣒2.2 ౑⏝ᶵᮦᮏᐇ㦂࡛ࡣࠊ࣮ࣘࢨࡀ఍ሙ࡟ᣢࡕ㎸ࢇࡔ୍⯡ࡢ↓⥺ LAN ➃ᮎ㸦ࣀ࣮ࢺ PCࠊࢫ࣐࣮ࢺࣇ࢛ࣥࠊࢱࣈࣞࢵࢺ㸧ࢆᑐ㇟࡟఩⨨᝟ሗࢆྲྀᚓࡋࡓࠋ఩⨨᝟ሗྲྀᚓࢩࢫࢸ࣒࡜↓⥺ LAN ࢖ࣥࣇࣛ࡟ࡣ௨ୗࡢᶵᮦࢆ฼⏝ࡋࡓࠋzz

Mobility Service Engine(MSE)¾RSS ࠿ࡽ఩⨨ィ⟬ࢆ⾜࠸ࠊࢩࢫࢸ࣒⟶⌮⪅ࡸ㛵㐃ᶵჾ࡟ࡑࡢ᝟ሗࢆᥦ౪ࡍࡿࠋ¾

ࣂ࣮ࢪࣙࣥ 7.5.102.0ࠊVMware ESXi ୖࡢ௬᝿࣐ࢩࣥ࡜ࡋ࡚ືస

Prime Infrastructure(PI)¾ࢿࢵࢺ࣮࣡ࢡ⤫ྜ⟶⌮ࢩࢫࢸ࣒࡛࠶ࡾࠊࢩࢫࢸ࣒඲⯡㸦APࠊWLCࠊMSE㸧ࡢタᐃ࠾ࡼࡧไᚚ࡜ࠊࢩࢫࢸ࣒⟶⌮⪅࡟ࡼࡿ᝟ሗ㜀ぴ࡟฼⏝ࡍࡿࠋ¾z࣡࢖ࣖࣞࢫ LAN ࢥࣥࢺ࣮ࣟࣛ(Wireless LAN Controller, ௨ୗ WLC)
¾zࣂ࣮ࢪࣙࣥ 1.4.0.45ࠊVMware ESXi ୖࡢ௬᝿࣐ࢩࣥ࡜ࡋ࡚ືసࣇ࢓࣮࣒࢙࢘࢔ 7.4.100.0ࠊWLC5508↓⥺ LAN ᇶᆅᒁ(802.11a/g/n)¾Aironet 2600 4 ྎ¾Aironet 3500 16 ྎ

3. ఩⨨ྲྀᚓ࡟㐺ࡋࡓ㟁Ἴ⎔ቃࡢᵓ⠏
3.1 AP ࡢ㓄⨨ᮏᐇ㦂࡛ࡣࠊྜᐟཧຍ⪅࡟⏕ά⏝ࡢ↓⥺ LAN ࢖ࣥࢱ࣮ࢿࢵࢺࢆᥦ౪ࡋࡘࡘࠊ➃ᮎࡢ఩⨨᝟ሗࢆྲྀᚓࡋࡓࠋ↓⥺ LAN ࡣ 802.11a/g/n ࡛ᥦ౪ࡋࠊ௨ୗࡢ㟁Ἴ⎔ቃࢆᵓ⠏ࡋࡓࠋAP ࡀ➃ᮎࡢಙྕࢆཷಙࡍࡿࡓࡵ࡟ࡣࠊᇶᆅᒁ⮬㌟ࡀࡑࡢࢳࣕࢿࣝୖ࡛┘ど≧ែ࡛࠶ࡿᚲせࡀ࠶ࡿࠋ㏻ಙࢧ࣮ࣅࢫࢆᥦ౪ࡍࡿ AP㸦௨ୗ㏻ಙ AP㸧ࡣࠊ⮬ศࡀࢧ࣮ࣅࢫࡋ࡚࠸ࡿࢳࣕࢿࣝ௨እࢆ୍ᐃ᫬㛫ẖ࡟࿘ᅇࡋ࡚┘どྍ⬟࡛࠶ࡿࡀࠊ┘どࡍࡿ᫬㛫ࡀ㠀ᖖ࡟▷࠸ࡓࡵຠᯝⓗ࡟➃ᮎࢆ᳨ฟ࡛ࡁ࡞࠸ࠋ㏻ಙ AP ࡣࢹࣇ࢛ࣝࢺタᐃ࡟࠾࠸࡚ 16 ⛊ࡢ㏻ಙࢧ࣮ࣅࢫ᫬㛫ࡢᚋ࡟ 50ms ࡢ௚ࢳࣕࢿࣝ┘ど᫬㛫ࢆᣢࡕࠊ㏻ಙࢧ࣮ࣅࢫ࣭௚ࢳࣕࢿࣝ A ࢆ┘ど࣭㏻ಙࢧ࣮ࣅࢫ࣭௚ࢳࣕࢿࣝ B ࢆ┘どࡢࡼ࠺࡟௚ࢳࣕࢿࣝࢆ㡰࡟࿘ᅇࡋ┘どࡍࡿࠋࢹࣇ࢛ࣝࢺタᐃࡢ┘ど㛫㝸㸦⣙ 180 ⛊㸧࡛ 2.4GHz ᖏࡢ 11 ࢳࣕࢿࣝ඲యࢆ┘どࡍࡿࡇ࡜࡟࡞ࡿࠋ㏻ಙ AP ࡛ࡣ௚ࢳࣕࢿࣝࢆ᳨ฟ࡛ࡁࡿ᫬㛫ࡀ㠀ᖖ࡟▷࠸ࡓࡵࠊ┘どᑓ⏝ࡢ AP㸦௨ୗࣔࢽࢱ AP㸧ࢆ㓄⨨ࡍࡿ࡜ࠊࡼࡾ㧗࠸㢖ᗘ࠾ࡼࡧ⢭ᗘ࡛఩⨨᳨ฟࡀྍ⬟࡟࡞ࡿࠋࣔࢽࢱ AP ࡣࠊࢹࣇ࢛ࣝࢺタᐃ࡛ࡣ 1.2 ⛊㛫㝸࡛ྛࢳࣕࢿࣝࢆ┘どࡍࡿࠋ௒ᅇࡢᐇ㦂࡛ࡣࠊᅗ࡟♧ࡍࡼ࠺࡟඲ 20 ྎࡢ AP㸦㉥㸸㏻ಙ AP9 ྎࠊ㟷㸸ࣔࢽࢱ AP 11 ྎ㸧ࢆ㓄⨨ࡋࡓࠋࣔࢽࢱ AP ࡢタ⨨࡟ࡼࡾࠊAP ࡢ⥲ᩘࡣࡇࢀࡲ࡛ྠつᶍ࡛㛤ദࡋࡓ WIDE ྜᐟࡢಸ௨ୖࡀᚲせ࡜࡞ࡗࡓࠋ㒊ᒇ㠃✚࡜㠃✚࠶ࡓࡾࡢ AP ᩘࢆ⾲ 1ࠊ⾲ 2 ࡟♧ࡍࠋ࢚ࣜ࢔඲యࡢ㠃✚ࡣᅗ 2 ࡟࠾ࡅࡿ 32m×77㹫ࡢ⠊ᅖ㸦᳨ฟᑐ㇟࡟ࡋ࡞࠸ࢺ࢖ࣞ࡞࡝ࢆྵࡵࡓ㠃✚㸧࡜ࡋ࡚࠸ࡿࠋࢩࢫࢥ♫ࡀ᥎ዡࡍࡿ㏻ಙ AP ࠶ࡓࡾࡢ࢝ࣂࣞࢵࢪࡣ⣙ 230-450 ੍࡛࠶ࡾ[2]ࠊ༑ศ࡞㏻ಙ AP ࡟ຍ࠼࡚ࣔࢽࢱ AP ࢆタ⨨ࡋ࡚࠸ࡿࠋ

ᅗ 2ᐇ㦂࢚ࣜ࢔ሙᡤ

㠃✚㏻ಙ AP ᩘࣔࢽࢱ AP ᩘ⥲ AP ᩘ

ࣉࣞࢼࣜ

330 ੍

325ಶ

࣮࣡ࢡࢩࣙࢵࣉ

941 ੍

268ಶ

఍㆟ᐊ(ᕥ)95 ੍112ಶ఍㆟ᐊ(ྑ)

81 ੍

112ಶ

඲య

2464 ੍

9120 ಶ

⾲ 1㒊ᒇ㠃✚࡜ AP ᩘሙᡤ㠃✚/㏻ಙ AP ᩘ㸦੍/AP㸧 㠃✚/ࣔࢽࢱ AP ᩘ㸦੍/AP㸧 㠃✚/⥲ AP ᩘ㸦੍/AP㸧

ࣉࣞࢼࣜ

110

165

66

࣮࣡ࢡࢩࣙࢵࣉ

470.5

156.8

117.625఍㆟ᐊ㸦ᕥ㸧

95

95

47.5

఍㆟ᐊ㸦ྑ㸧

81

81

40.5

඲య

273.8

224

123.2

⾲ 2

㠃✚࠶ࡓࡾࡢ AP ᩘ

3㸬3 ↓⥺ LAN ࡢࢳࣕࢿࣝタィ
2.4GHz ᖏ࡟࠾࠸࡚ࡣࠊ↓⥺ LAN ࢆ฼⏝ࡍࡿ௚ࡢᐇ㦂࡜ࡢఫࡳศࡅࡢࡓࡵ 11ch ࡢࡳ฼⏝ࡋࡓࠋ௒ᅇࡢ WIDEྜᐟ࡛ࡣ఍ሙෆ඲యࢆ฼⏝ࡍࡿ↓⥺ LAN ࡢᐇ㦂ࡀᮏᐇ㦂ࢆྵࡵ࡚ 3 ࡘᖹ⾜ࡋ࡚⾜ࢃࢀ࡚࠾ࡾࠊᐇ㦂ẖ࡟࢚ࣜ࢔඲య࡟ AP ࢆ㓄⨨ࡋ࡚࠸ࡿࡓࡵࠊᐇ㦂ẖ࡟ 1chࠊ6chࠊ11ch ࡀ๭ࡾᙜ࡚ࡽࢀ࡚࠸ࡿࠋᐇ㦂ẖ࡟ࢳࣕࢿࣝࢆ๭ࡾᙜ
࡚ࡓ⌮⏤ࡣࠊAP 㛫ࡢᖸ΅ࡀ㑊ࡅࡼ࠺ࡀ࡞࠸ࡓࡵࠊྠࡌ⟶⌮⪅ࡢ㓄ୗ࡟࠶ࡿ AP ྠኈࡀᖸ΅ࡋࡓ࡯࠺ࡀࠊ␗࡞ࡿ⟶⌮⪅ࡢ㓄ୗ࡟࠶ࡿ AP ྠኈࡀᖸ΅ࡍࡿࡼࡾࡶᙳ㡪ࡢᢕᥱࡸㄪᩚࡀᐜ࡛᫆࠶ࡿࡓࡵ࡛࠶ࡿࠋ
5GHz ᖏࡣࠊࢳࣕࢿࣝ࣎ࣥࢹ࢕ࣥࢢ࡟ࡼࡾ 40Mhz ᖏᇦᖜ࡛㐠⏝ࡋࠊࢳࣕࢿࣝࡣ W53(52+56, 60+64)࠿ࡽ
W56(100+104,108+112,116+120,124+128,132+136)ࡲ࡛ࢆ฼⏝ࡋࡓࠋ7 ࢳࣕࢿࣝࡀ฼⏝ྍ⬟࡛࠶ࡿࡓࡵࠊᖸ΅ࡀᑡ࡞࠸㐠⏝ࡀྍ⬟࡛࠶ࡗࡓࠋࡲ࡜ࡵࡿ࡜ࠊ2.4GHz ᖏ࡜ 5GHz ᖏࡢྜィࢳࣕࢿࣝᩘࡣ௨ୗ࡟࡞ࡿࠋ
z2.4GHz ᖏ㸸ィ 1 ࢳࣕࢿࣝ(11ch)

z5GHz ᖏ㸸ィ 7 ࢳࣕࢿࣝ(52+56ࠊ60+64ࠊ100+104ࠊ108+112ࠊ116+120ࠊ124+128ࠊ132+136)௒ᅇࡢᐇ㦂࡛ࡣ 2.4GHz ᖏࡀ 1 ࢳࣕࢿ࡛ࣝ࠶ࡿࡓࡵࠊ㟁Ἴᖸ΅࡟ࡼࡾ✵㛫ࡢ㏻ಙ࢟ࣕࣃࢩࢸ࢕ࡀᑠࡉࡃࠊࡲࡓ

ΰ㞧ࡍࡿ࡜➃ᮎ࠿ࡽ㏦ಙࡉࢀࡓಙྕࢆ」ᩘࡢ AP ࡛ṇࡋࡃཷಙ࡛ࡁ࡞࠸ྍ⬟ᛶࡀୖࡀࡿࠋࡑࡢࡓࡵࠊྍ⬟࡞㝈ࡾ
㏻ಙࢆ 5GHz ᖏ࡟ㄏᑟࡍࡿࡇ࡜ࠊࡑࡋ࡚ไᚚࣇ࣮࣒ࣞ࡟ࡼࡿ 2.4GHz ᖏࡢ᫬㛫ᾘ㈝ࢆᢚไࡍࡿࢳ࣮ࣗࢽࣥࢢࢆ⾜ࡗࡓࠋ㸯㸧Band Select ᶵ⬟Band Select ᶵ⬟ࡣࠊAP ࡀ 2.4GHz ᖏ࡟࠾࠸࡚➃ᮎ࠿ࡽࡢࣉ࣮ࣟࣈࢆᩘᅇ◚Რࡍࡿࡇ࡜࡛ࠊ➃ᮎࡀ 5GHzᖏ࡛㏻ಙ㛤ጞࡍࡿࡇ࡜ࢆಁࡍᶵ⬟࡛࠶ࡿࠋ㸰㸧᥋⥆࣮ࣞࢺࡢไ㝈ୗ࡟♧ࡍࡼ࠺࡟ࠊ2.4GHz ᖏ࡛ࡣ 12Mbps ௨ୗࡢ㏻ಙ࣮ࣞࢺࢆ↓ຠ࡟タᐃࡋࡓࠋࡇࢀ࡟ࡼࡾࠊప㏿࡞㏻ಙࡸ᭱ప᥋⥆࣮ࣞࢺ࡛㏦ಙࡉࢀࡿ AP ࠿ࡽࡢไᚚࣇ࣮࣒ࣞࡀࢳࣕࢿࣝ᫬㛫ࢆᾘ㈝ࡍࡿࡇ࡜ࢆᢚไࡋࡓࠋ5GHz ᖏ࡛ࡣ᥋⥆࣮ࣞࢺࡢไ㝈ࡣ⾜ࢃ࡞࠿ࡗࡓࠋ
802.11b/g Operational Rates
802.11b/g 1M Rate............................ Disabled
802.11b/g 2M Rate............................ Disabled
802.11b/g 5.5M Rate.......................... Disabled
802.11b/g 11M Rate........................... Disabled
802.11g 6M Rate.............................. Disabled
802.11g 9M Rate.............................. Disabled
802.11g 12M Rate............................. Disabled
802.11g 18M Rate............................. Supported
802.11g 24M Rate............................. Mandatory
802.11g 36M Rate............................. Supported
802.11g 48M Rate............................. Supported
802.11g 54M Rate............................. Supported
802.11a Operational Rates
802.11a 6M Rate.............................. Mandatory
802.11a 9M Rate.............................. Supported
802.11a 12M Rate............................. Mandatory802.11a 18M Rate............................. Supported
802.11a 24M Rate............................. Mandatory
802.11a 36M Rate............................. Supported
802.11a 48M Rate............................. Supported
802.11a 54M Rate............................. Supported
㸱㸧㏦ಙฟຊࡢᡭືㄪᩚ
2.4GHz ᖏࡣ 11 ࢳࣕࢿࣝᅛᐃ࡛࠶ࡾࠊAP ࡢ㏦ಙฟຊࡣ⮬ືㄪᩚ࡜ࡋࡓࠋ5GHz ᖏ࡛ࡣࠊࡣࡌࡵࡣ AP ࡢ㏻ಙࢳࣕࢿࣝ࡜㏦ಙฟຊࢆ⮬ື㑅ᢥࡋࡓࡀࠊAP ࡀᐦ࡟タ⨨ࡉࢀ࡚࠸ࡿࡓࡵ㏦ಙฟຊࡀపࡵ࡟⮬ືㄪᩚࡉࢀࠊ
༙ศ௨ୖࡢ➃ᮎࡀ RSS ࡀ㧗࠸ 2.4GHz ᖏ࡟᥋⥆ࡍࡿ≧ែ࡟࡞ࡗࡓࡓࡵࠊ5GHz ᖏࡢ㏦ಙฟຊࢆᡭື࡛タᐃࡋࠊAP ࠿ࡽ 5GHz ᖏࡢ㟁Ἴࡀ➃ᮎ࡟ᙉࡃ฿㐩ࡍࡿࡼ࠺࡟ㄪᩚࡋࡓࠋࡑࡢ⤖ᯝࠊᅗ 3 ࡟♧ࡍࡼ࠺࡟⣙ 7 ๭ࡢ➃ᮎࡀ 5GHz ᖏ࡟௨㝆ࡋࡓࠋ༑ᩘྎタ⨨ࡉࢀ࡚࠸ࡓ Raspberry Pi ࢆྵࡵ࡚ 5GHz ᖏ࡟ᮍᑐᛂࡢ➃ᮎࡶᏑᅾࡍࡿࡓࡵࠊ5GHz ࡟ᑐᛂࡋࡓ➃ᮎࡣ኱༙ࡀㄏᑟ࡛ࡁ࡚࠸ࡓ࡜ᛮࢃࢀࡿࠋ

➃ᮎࡢ฼⏝࿘Ἴᩘᖏ
120100
➃ᮎᩘ

80
60
40
200ㄪᩚ๓

ㄪᩚᚋ

11g

2211a

1011n(2.4GHz)

61

3011n(5GHz)3465

ᅗ 3➃ᮎࡢ฼⏝࿘Ἴᩘᖏ㸦5GHz ᖏࡢ㟁Ἴฟຊㄪᩚ๓࣭ㄪᩚᚋ㸧ᅗ 4 ࡣྜᐟᮇ㛫୰ࡢ↓⥺ LAN ➃ᮎᩘࡢ᥎⛣࡛࠶ࡿࠋ࣮࣡ࢡࢱ࢖࣒ࡣᖖ᫬ 100 ྎ௨ୖࡢ➃ᮎࡀ⏕ά⥺࡜ࡋ࡚฼⏝ࡋࡓࠋᅗ 4᥋⥆➃ᮎᩘ᥎⛣ᅗ 5 ࡜ᅗ 6 ࡣ 5GHz ᖏࡢ AP ㏦ಙฟຊㄪᩚᚋࡢࢧ࢖ࢺࢧ࣮࣋࢖⤖ᯝ࡛࠶ࡾࠊRSS ࡢศᕸࢆ♧ࡋ࡚࠸ࡿࠋࢧ࣮
࣋࢖᫬࡟ࡣᗯୗࡢ㏻ಙ AP㸦1 ྎ㸧ࡀࢺࣛࣈࣝ࡟ࡼࡾ࢜ࣇࣛ࢖ࣥࡢ≧ែ࡛࠶ࡗࡓࡀࠊ࢚ࣜ࢔඲య࡛᭱ప-60dBm ௨ୖࡢ RSS ࡀ☜ಖࡉࢀ࡚࠾ࡾࠊ2.4GHz ᖏࡼࡾࡶ 5GHz ᖏ࡛ᙉ࠸ RSS ࡀ☜ㄆ࡛ࡁ࡚࠸ࡿࠋ

ᅗ 52.4GHz ᖏࡢ࢝ࣂࣞࢵࢪ㸦RSS -40dBm㹼-60dBm㸧

ᅗ 65GHz ᖏࡢ࢝ࣂࣞࢵࢪ㸦RSS -40dBm㹼-60dBm㸧

4. ࢹ࣮ࢱศᯒ
4.1 ྲྀᚓࢹ࣮ࢱࡢᴫせୖグࡢࢩࢫࢸ࣒⎔ቃ࡟ࡼࡾྲྀᚓࡋࡓ఩⨨ࢹ࣮ࢱ࡟ࡘ࠸࡚ࠊ᳨ฟࡢ⢭ᗘ࡜ഴྥ࡟㛵ࡍࡿศᯒࢆ⾜ࡗࡓࠋศᯒ࡟ࡣࠊMSE ࡀᥦ౪ࡍࡿ location history ᝟ሗ㸦௨ୗࠊࣄࢫࢺࣜ᝟ሗ㸧ࢆ⏝࠸ࡓࠋࣄࢫࢺࣜ᝟ሗ࡟ࡣࠊ➃ᮎࡀึࡵ᳨࡚ฟࡉࢀࡓ࡜ࡁ࡜ࠊ➃ᮎࡀ 10m ௨ୖ⛣ືࡋࡓ࡜᳨ฟࡉࢀࡓ࡜ࡁ࡟グ㘓ࡀṧࡿࠋᮏࢹ࣮ࢱࡢᴫせࡣ௨ୗࡢ㏻ࡾ࡛࠶ࡿࠋzࢹ࣮ࢱྲྀᚓᮇ㛫㸸2013 ᖺ 9 ᭶ 10 ᪥ 0:00㹼9 ᭶ 13 ᪥ 19:50z

᳨ฟࡋࡓ➃ᮎ(mac address)ᩘ㸸1748z

ࢧࣥࣉࣝᩘ㸸95635
ྜᐟཧຍ⪅ᩘ 129 ྡ࡟ᑐࡋ࡚ࠊmac ࢔ࢻࣞࢫࡣ 1748 ᳨ฟࡉࢀ࡚࠾ࡾࠊ఍ሙእ࠿ࡽ฿᮶ࡍࡿࢩࢢࢼࣝࡶᩘከࡃࢹ࣮ࢱ࡟ྵࡲࢀ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿࠋศᯒ࡟࠶ࡓࡾࠊࡲࡎ᳨ฟ⢭ᗘࡀప࠸᝟ሗࢆ confidence factor ್㸦௨ୗ CF್㸧࡟ࡼࡾ㝖እࡍࡿࠋCF ࡜ࡣࠊ࠶ࡿ➃ᮎࡢ఩⨨ࢆィ⟬ࡋࡓሙྜ࡟ࠊ᥎ᐃ఩⨨ࢆ୰ᚰ࡜ࡍࡿṇ᪉ᙧ࡟➃ᮎࡀᐇ㝿࡟఩⨨ࡍࡿࡇ࡜ࢆ 95%ಙ㢗࡛ࡁࡿ࡜ࡋࡓሙྜࡢࠊṇ᪉ᙧࡢ኱ࡁࡉࢆ♧ࡍ್࡛࠶ࡿ[2]ࠋᅗ 7 ࡟♧ࡍࡼ࠺࡟ࠊCF ್ࡣಙ㢗ᛶ 95%ࡢṇ᪉ᙧ࡟࠾ࡅࡿ㎶ࡢ༙ศࡢ㛗ࡉ࡛࠶ࡾࠊx ㍈࡜ y ㍈ࡢ࡝ࡕࡽ࠿᳨࡛ฟ఩⨨ࡀᐇ㝿ࡢ఩⨨࠿ࡽࡢእࢀࡿ㊥㞳ࡢ࠾ࡼࡑ᭱኱್࡜⪃࠼ࡿࡇ࡜ࡀ࡛ࡁࡿࠋಙ㢗ᛶࡀ㧗࠸ࢹ࣮ࢱࡣṇ᪉ᙧࡢ㎶ࡀ▷ࡃ࡞ࡾ㸦CF ್ࡀᑠࡉࡃ࡞ࡾ㸧ࠊಙ㢗ᛶࡀప࠸ࢹ࣮ࢱࡣ㎶ࡀ㛗ࡃ࡞ࡿ㸦CF ್ࡀ኱ࡁࡃ࡞ࡿ㸧ࠋ

ᅗ 7confidence factorᅗ 8 ࡟ᮏᐇ㦂ࡢࣄࢫࢺࣜ᝟ሗ࡟࠾ࡅࡿ CF ್ࡢศᕸࠊᅗ 9 ࡟ࡑࡢ್ࡈ࡜ࡢ๭ྜࢆ♧ࡍࠋ್ࡀ 10m㹼30m ࡢ⠊ᅖࡢࢧࣥࣉࣝᩘࡢ๭ྜࡀ㧗ࡃ඲యࡢ 46%ࢆ༨ࡵ࡚࠸ࡿࠋ
8000
7000

ࢧࣥࣉࣝᩘ

6000
5000
4000
3000
2000
1000
0050

100

150200250

confidence factor್㸦࣓࣮ࢺࣝ᥮⟬㸧

ᅗ 8CF ್ࡢศᕸ

ࡑࢀ௨ୖ
17%

10m௨ୗ
13%

40㹼50m8%

10㹼20m21%

30㹼40m15%
20㹼30m26%

ᅗ 9CF ್ࡢ๭ྜ4.2 ᅛᐃࣀ࣮ࢻࡢ఩⨨᝟ሗ࡟㛵ࡍࡿ⪃ᐹྜᐟᆅ࡟ᅛᐃタ⨨ࡉࢀ↓⥺ LAN ࡢࢿࢵࢺ࣮࣡ࢡ┘どࢆ⾜ࡗ࡚࠸ࡓ Raspberry Pi ➃ᮎ࡟ࡘ࠸࡚఩⨨᝟ሗࢆศᯒ
ࡋࡓࠋᅗ 10㹼ᅗ 19 ࡣࠊࢧࣥࣉࣝᩘࡀ᭱ࡶከ࠿ࡗࡓ 5 ࡘࡢ Raspberry Pi ➃ᮎࡢ᥎ᐃ఩⨨࡛࠶ࡿ㸦༢఩㸸࣓࣮ࢺࣝ㸧ࠋྛ➃ᮎ࡟ࡘ࠸࡚ࠊ඲ࢧࣥࣉࣝࡢศᕸ࡜ࠊCF ್ 30m ௨እ࡟ࢧࣥࣉࣝࢆ⤠ࡾ㎸ࢇࡔሙྜࡢศᕸࢆ♧ࡋ࡚࠸ࡿࠋ
᳨▱఩⨨ࡀᶓ᪉ྥ࡟ศᩓࡋ࡚࠸ࡿࡶࡢ㸦ᅛᐃ➃ᮎ 1㸪ᅛᐃ➃ᮎ 5㸧ࠊᐦ㞟ࡋ࡚࠸ࡿࡶࡢ㸦ᅛᐃ➃ᮎ 2㸪ᅛᐃ➃ᮎ 3㸧ࠊ⦪ᶓ࡟ศᩓࡋ࡚ࡋࡲࡗ࡚࠸ࡿࡶࡢ㸦ᅛᐃ➃ᮎ 4㸧ࠊ࡞࡝ࠊ➃ᮎẖ࡟ᗄࡘ࠿ࡢഴྥࡀ࠶ࡿࡀࠊࢧࣥࣉࣝࡢᐦ㞟ᗘ࠿ࡽࣀ࣮ࢻࡢ఩⨨࡟౫Ꮡࡋ᳨࡚ฟࡢ⢭ᗘ࡟ࡤࡽࡘࡁࡀ⏕ࡌ࡚࠸ࡿࡇ࡜ࡀศ࠿ࡿࠋศᩓࡋ࡚࠸ࡿࡶࡢ࡯࡝᥎ᐃ఩⨨ࡀ୙ṇ☜࡜⪃࠼ࡽࢀࡿࠋࡇࡢ࡜ࡁࠊྠࡌ➃ᮎ࡟ࡘ࠸࡚ࠊ඲ࢧࣥࣉࣝ࡜ CF ್ 30m ௨ෆࡢࢧࣥࣉࣝࢆẚ㍑ࡋ࡚ࡶ኱ࡁ࡞㐪࠸ࡣぢࡽࢀ࡞࠸ࠋࡑࡢࡓࡵࠊCF ್ࢆ฼⏝ࡋ࡚ࠊ⢭ᗘࡀప࠸ࢧࣥࣉࣝࢆ᏶඲࡟Ὲửࡍࡿࡇ࡜ࡣᅔ㞴࡜ᛮࢃࢀࡿࠋ୍᪉ࠊ᳨ฟ఩⨨ࡀᐦ㞟ࡋ࡚࠸ࡿ㸦᳨ฟ⢭ᗘࡀ㧗࠸࡜ᛮࢃࢀࡿ࢚ࣜ࢔ࡢ㸧➃ᮎࡣ CF ್ࡀ 30m ௨ୗࡢࢧࣥࣉࣝࡢ๭ྜࡀከࡃࠊ఩⨨ࡀศᩓࡋ࡚࠸ࡿ㸦᳨ฟ⢭ᗘࡀప࠸࡜ᛮࢃࢀࡿ࢚ࣜ࢔ࡢ㸧➃ᮎࡣࡑࡢ๭ྜࡀపࡃ࡞ࡗ࡚࠸ࡿࠋ
౛࠼ࡤࠊẚ㍑ⓗ᥎ᐃ఩⨨࡟ࡤࡽࡘࡁࡀฟ࡚࠸ࡿᅛᐃ➃ᮎ 1ࠊ4ࠊ5 ࡛ࡣ CF ್ࡀ 30m ௨ෆࢹ࣮ࢱࡣ 45.8%ࠊ74.8%ࠊ
42.6 ࡛࠶ࡿࡀࠊ᥎ᐃ఩⨨ࡀᐦ㞟ࡋ࡚࠸ࡿᅛᐃ➃ᮎ 2ࠊ3 ࡛ࡣ 90%๓ᚋ࡛࠶ࡿࠋCF ್ࡢࡤࡽࡘࡁࡣࠊ࢚ࣜ࢔ࡢ᳨ฟ⢭ᗘ࡟㛵㐃ࡍࡿ࡜⪃࠼ࡽࢀࡿࠋ
020406080

10000104060

80

10010202030

30

40405050

ᅗ 10 ᅛᐃ➃ᮎ 1㸦඲ࢧࣥࣉࣝ 3142㸧

020406080

ᅗ 11 ᅛᐃ➃ᮎ 1㸦CF ࡀ 30m ௨ෆࠊ45.8%㸧

100000101020

2030

30

40405050ᅗ 12ᅛᐃ➃ᮎ 2㸦඲ࢧࣥࣉࣝ 2703㸧

020406080

ᅗ 13100
010102020303040405050

ᅛᐃ➃ᮎ 3㸦ࢧࣥࣉࣝᩘ 2694㸧

ᅗ 1520406080100

ᅛᐃ➃ᮎ 2㸦CF ࡀ 30m ௨ෆࠊ89.7%㸧

00ᅗ 1420020406080100

ᅛᐃ➃ᮎ 3㸦CF ࡀ 30m ௨ෆࠊ91.3%㸧

0204060

80

100

000101020203030

40405050

ᅗ 16 ᅛᐃ➃ᮎ 4㸦ࢧࣥࣉࣝᩘ 2676㸧

0204060

80

100

00

10102020303040405050

ᅛᐃ➃ᮎ 5㸦ࢧࣥࣉࣝᩘ 2669㸧

4060

80100

ᅗ 17 ᅛᐃ➃ᮎ 4㸦CF ࡀ 30m ௨ෆࠊ74.8%㸧

0ᅗ 1820ᅗ 19204060

80100

ᅛᐃ➃ᮎ 5㸦CF ࡀ 30m ௨ෆࠊ42.6%㸧

4.3 ఩⨨࡟ࡼࡿ᳨ฟ⢭ᗘ࡟㛵ࡍࡿ⪃ᐹᅛᐃࣀ࣮ࢻࡢ఩⨨᝟ሗ࡟㛵ࡍࡿ⪃ᐹࡼࡾࠊࣀ࣮ࢻࡢ఩⨨࡟ࡼࡾ᳨ฟ⢭ᗘ࡟ᕪࡀ⏕ࡌ࡚࠸ࡿࡇ࡜ࡀศ࠿ࡗࡓࠋࡲࡓࠊ᳨ฟ⢭ᗘࡀᝏ࠸఩⨨࡛ࡣ CF ್ࡀ඲యⓗ࡟పୗࡍࡿࡇ࡜ࡀศ࠿ࡗࡓࠋࡑࡇ࡛ࠊᐇ㦂࢚ࣜ࢔ෆ࡛࡝ࡢሙᡤࡀṇ☜࡛ࠊ࡝ࡢሙᡤࡀ୙ṇ☜࡞ࡢ࠿᳨ウࡍࡿࠋᅗ 20㹼22 ࡢ 3 ࡘࡢᅗࡣࠊCF ್ࡀ 10㹫௨ୗࠊ30m ௨ୗࠊ30m ௨ୖࡢࢧࣥࣉࣝࡢศᕸ࡛࠶ࡿࠋぢࡸࡍࡉࡢࡓࡵࠊࡇࢀࡽࡢࢹ࣮ࢱࡣ 2013 ᖺ 9 ᭶ 12 ᪥ࡢ 1 ᪥ศ࡜ࡋ࡚࠸ࡿࠋᅗ 20 ࡢࡼ࠺࡟ࠊ⢭ᗘࡀ㧗࠸᝟ሗࡣࣔࢽࢱ AP ࡟࿘ᅖࢆᅖࡲࢀࡓ࣮࣍ࣝෆࡸ఍㆟ᐊෆ࡟㞟୰ࡋ࡚࠾ࡾࠊ㏫࡟⢭ᗘࡀᝏ࠸᝟ሗ
ࡣᅗ 22 ࡢࡼ࠺࡟୰ኸࡢᗯୗࡢࡼ࠺࡟ࣔࢽࢱ AP ࡟ᅖࡲࢀ࡚࠸࡞࠸ሙᡤ࡟㞟୰ࡋ࡚࠸ࡿࠋᗯୗ࡛ࡣࠊࣔࢽࢱ AP࡜➃ᮎࡢ㛫࡟ቨࡸᰕ࡞࡝ࡢ㐽ⶸ≀ࡀᏑᅾࡍࡿࡇ࡜ࡶ᳨ฟ⢭ᗘ࡟ᙳ㡪ࡋ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿࠋ

020406080

100

01020304050

ᅗ 20 CF ್ࡀ 10m ௨ୗࡢࢧࣥࣉࣝ㸦ࢧࣥࣉࣝᩘ 3234ࠊ඲యࡢ 15.3%㸧
020406080

100

01020304050

ᅗ 21 CF ್ࡀ 30m ௨ୗࡢࢧࣥࣉࣝ㸦ࢧࣥࣉࣝᩘ 13769ࠊ඲యࡢ 65.2%㸧
020406080

100

01020304050

ᅗ 22 CF ್ࡀ 30m ௨ୖࡢࢧࣥࣉࣝ㸦ࢧࣥࣉࣝᩘ 7338ࠊ඲యࡢ 34.8%㸧

4.4 ⛣ື➃ᮎࡢᒚṔḟ࡟ࠊ4.3 ࡛㏙࡭ࡓᅛᐃ➃ᮎ௨እ࡛ࠊ᳨ฟࡉࢀࡓᅇᩘࡀከ࠿ࡗࡓ➃ᮎୖ఩ 5 ྎ㸦୙≉ᐃ➃ᮎ A㹼E㸧࡜ࠊmac࢔ࢻࣞࢫㄪᰝ࡟ࡼࡾཧຍ⪅ࡢ⛣ື➃ᮎ࡛࠶ࡿࡇ࡜ࡀุ᫂ࡋ࡚࠸ࡿ➃ᮎࡢୖ఩ 5 ྎ㸦⛣ື➃ᮎ a㹼e㸧ࡢศᕸࢆ௨ୗ࡟♧ࡍࠋᅗ♧ࡉࢀ࡚࠸ࡿࡢࡣ 3 ᪥㛫ࡢࢹ࣮ࢱࡢ࠺ࡕ CF ್ࡀ 30m ௨ෆࡢࢧࣥࣉࣝࡢࡳ࡛࠶ࡿࠋྛ➃ᮎࡢ඲ࢧࣥࣉࣝᩘࠊCF ್ࡀ 30m ௨ෆࡢࢧࣥࣉࣝᩘࠊࡑࡢ๭ྜࢆ⾲ 3 ࡟♧ࡍࠋ୙≉ᐃ➃ᮎࡣࠊA㹼D ࡢࡼ࠺࡟ᅗ㠃ࡢྑୖ࡟ᒚṔࡀ㞟୰ࡍࡿ⟠ᡤࡀ࠶ࡿࡀࠊ⾲ 3 ࡟♧ࡍ࡜࠾ࡾ⢭ᗘࡀ㧗࠸ࢧࣥࣉࣝᩘࡢ๭ྜࡀపࡃࠊ࢚ࣜ࢔እࡢ➃ᮎࢆ᳨ฟࡋ࡚࠸ࡿྍ⬟ᛶࡀ㧗࠸ࠋⓏ㘓῭➃ᮎࡣ୙≉ᐃ➃ᮎࡼࡾࡶ⢭ᗘࡀ㧗࠸ࢧࣥࣉࣝࡢ๭ྜࡀከࡃࠊ࢚ࣜ࢔ෆ࡟⌧ᐇⓗ࡞್ࡀྲྀᚓ࡛ࡁ࡚࠸ࡿࠋࡋ࠿ࡋࠊ⛣ື➃ᮎࡢࢹ࣮ࢱࡣᐇ㝿ࡢ฼⏝࡜↷ࡽࡋྜࢃࡏ࡚⪃࠼ࡿᚲせࡀ࠶ࡿࡓࡵࠊ௒ᅇࡣ➃ᮎࡢᐇ㝿ࡢ఩⨨࡜ࡢẚ㍑ࡣ࡛ࡁ࡞࠿ࡗࡓࠋ⛣ື➃ᮎ࡟㛵ࡍࡿࢹ࣮ࢱ⢭ᗘࡢㄪᰝࡣ௒ᚋࡢㄢ㢟࡜ࡍࡿࠋ
02040

60

80

100

000101020

2030

3040405050

ᅗ 23
02040

୙≉ᐃ➃ᮎ A60

80

100

00

10102020303040

40

5050

ᅗ 25 ୙≉ᐃ➃ᮎ C
20406080

01020
304050ᅗ 27 ୙≉ᐃ➃ᮎ E40

ᅗ 24002020406080

୙≉ᐃ➃ᮎ B6080

ᅗ 26 ୙≉ᐃ➃ᮎ D
100

1001000204060

80

100

0001010202030304040505020

ᅗ 28 Ⓩ㘓⛣ື➃ᮎ a
020

4060

80

100

001010202030

3040

405050ᅗ 30 Ⓩ㘓⛣ື➃ᮎ c204060

80

60

80100

ᅗ 29 Ⓩ㘓⛣ື➃ᮎ b

0040

20406080100

ᅗ 31 Ⓩ㘓⛣ື➃ᮎ d100

01020304050

ᅗ 32 Ⓩ㘓⛣ື➃ᮎ e➃ᮎ඲ࢧࣥࣉࣝᩘ

CF ್ࡀ 30m ௨ෆࡢࢧࣥࣉࣝᩘCF ್ࡀ 30m ௨ෆࡢࢧࣥࣉࣝᩘࡢ๭ྜ

୙≉ᐃ➃ᮎ A

2149

355

16.5%

୙≉ᐃ➃ᮎ B

2005

643

32.1%

୙≉ᐃ➃ᮎ C

1343

349

26.0%

୙≉ᐃ➃ᮎ D

1157

268

23.2%

୙≉ᐃ➃ᮎ E1125

520

46.2%

Ⓩ㘓⛣ື➃ᮎ a896

62870.0%Ⓩ㘓⛣ື➃ᮎ b586

389

66.4%

Ⓩ㘓⛣ື➃ᮎ c

430

286

66.6%

Ⓩ㘓⛣ື➃ᮎ d392

292

74.5%

Ⓩ㘓⛣ື➃ᮎ e

351

291

82.9%

⾲ 3 ୙≉ᐃ➃ᮎ࡜Ⓩ㘓⛣ື➃ᮎ࡟㛵ࡍࡿ఩⨨᝟ሗ

5. ࡲ࡜ࡵWIDE ྜᐟ࡟࠾࠸࡚ࠊ↓⥺ LAN ࡟ࡼࡿ RTLS ࡢᐇ㦂㐠⏝ࢆ⾜ࡗࡓࠋึᅇࡢᐇ㦂࡛࠶ࡿࡓࡵࠊ⢭ᗘࡢ᳨ドࡣ୙༑ศ࡛࠶ࡿࡀࠊ௨ୗࡢࡼ࠺࡟ᵓ⠏࣭㐠⏝࡟㛵ࡍࡿ᭷⏝࡞▱ぢࡀᚓࡽࢀࡓࠋzᐇ㦂ࢆ⾜ࡗࡓྜᐟᆅࡣ㑹እ࡛࠶ࡿࡀࠊண᝿௨ୖ࡟እ᮶࡜ᛮࢃࢀࡿ↓⥺ LAN ➃ᮎࡀ᳨▱ࡉࢀ࡚࠸ࡿࠋእ᮶ࡢ
➃ᮎࢆຠ⋡ⓗ࡟㝖እࡍࡿᥐ⨨ࡀᚲせ࡛࠶ࡿࠋzᮏᐇ㦂࡛ࡣࠊሙᡤ࡟ࡼࡗ࡚఩⨨᝟ሗࡢ⢭ᗘ࡟ᕪࡀ⏕ࡌࡓࠋࢹ࣮ࢱࡣ CF ್࡟ࡼࡗ࡚ಙ㢗ᛶࡀ♧ࡉࢀࡿࡀࠊࡑࡢ್ࡢࡳ࡛⢭ᗘࡀᝏ࠸ࢹ࣮ࢱࢆῈửࡍࡿࡇ࡜ࡣ㝈⏺ࡀ࠶ࡿࠋ㏫࡟᳨ฟ⢭ᗘࡀᝏ࠸ሙᡤ࡛ࡣ඲⯡ⓗ࡟ CF ್ࡀᝏ໬ࡍࡿࡓࡵࠊࡑࡢ࢚ࣜ࢔ෆࡢ఩⨨⢭ᗘࡀ᥎ ࡛ࡁࡿࠋz఩⨨⢭ᗘࡢྥୖࡣࠊࡼࡾ⥥ᐦ࡞ࣔࢽࢱ AP ࡢ㓄⨨࡜㟁Ἴῶ⾶࡟㛵ࡍࡿ࢚ࣜ࢔ࡢ≀⌮᝟ሗ࡟ࡼࡗ࡚ྍ⬟࡜ᛮࢃࢀࡿࠋࡋ࠿ࡋࠊࡑࢀࢆ」㞧࡞ᐇ✵㛫࡛⡆᫆࡟ྲྀᚓ࣭タィࡍࡿࡇ࡜ࡣᅔ㞴࡛࠶ࡾࠊ఩⨨᝟ሗࡢྲྀᚓ࡟ࡣ᪤Ꮡࡢ↓⥺ LAN ࢖ࣥࣇࣛࡼࡾࡶ᭦࡟ࢩࢫࢸ࣒⟶⌮⪅࡟ࡼࡿࢳ࣮ࣗࢽࣥࢢࡀᚲせ࡛࠶ࡿࠋ௒ᚋࠊ఩⨨᝟ሗ⢭ᗘࢆྥୖࡉࡏࡿࢩࢫࢸ࣒ᵓ⠏࣭㐠⏝ᢏ⾡࡜ࢹ࣮ࢱ⢭ᗘ࡟㛵ࡍࡿ᳨ウࢆ㔜ࡡࡿ࡜ඹ࡟ࠊࡇࡢࡼ࠺࡟⡆᫆࡟ྲྀᚓ࡛ࡁࡿࡼ࠺࡟࡞ࡗࡓᒇෆ఩⨨᝟ሗࡢ࢔ࣉࣜࢣ࣮ࢩࣙࣥ฼⏝ࢆ㐍ࡵࡿணᐃ࡛࠶ࡿࠋཧ⪃ᩥ⊩[1] Unified Wireless Network ࡢ୙ṇ࡞⟶⌮
http://www.cisco.com/cisco/web/support/JP/110/1109/1109864_handling-rogue-cuwn-00-j.html[2] Context Aware Mobility Solution Deployment Guide
http://www.cisco.com/en/US/products/ps9742/products_tech_note09186a00809d1529.shtml

Copyright Notice
Copyright (C) WIDE Project (2014). All Rights Reserved.