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Next Generation Mobility
เทคโนโลยเครอขายเฉพาะกจสำหรบยานยนต(Vehicular Ad-Hoc Network Technology)
เขยนโดย ศวพล เจรญฉาย
ӡ쵹¶çÒèÇËÐÃÃÒÊÍè×ÊÃÒ¡ÕÂÅâ¹â¤·à Ò èÕ·§èÔʹç»à§ÑÅÓ·ÃÒ¡§ÒéÃʶÃÒÁÒÊÃÒÊÍè×ÊÃÒ¡ÐÒÃ¾à §ÍÁÒµºÑ¨Òè¹ ÁÕ·ººá¹Ò§
¹Ñ¡ÐÅá¹Ñ¡§èÖ«ÅÙÁÍ颹ÂèÕÅ»à¡Åá¶ÃÒÁÒÊ쵹¶à é´ä쵹¶úѡéËã§èËá§èʹ¢ººÐôԡàéËãÍè×¾à ¨ã¹Ôʴѵ¹Ñ¡ÂÇèª Å¼ÅÇÁÐû¹Ñ¡ÂÇèªÃ¨ÒèÃÒ¡ÒËÞÑ»é¡á¶ÃÒÁÒÊ ÐÂÔé¨Ñ͹ç»àÁÒǤÕÁèÕ·µ¤Ò¹Í¡Åâ¹ã ¹éÖ¢§èÔÂÕ´éËãÂÑÀ´ÍÅ»ÁÒǤ§ÒéÃÊÐÅá ¾ÒÀÔ¸·ÔÊÐûÕÁ§ÒèÂÍé´ä
ӹ͢¹ÂÕ¢àéÙ¼éÕ¹ÁÒǤ·º àʹÍÃкºà¤Ã×Í¢‹ÒÂ੾ÒСԨÊÓ ËÃѺÂÒ¹ººÐùç»à§èÖ« )TENAV : krowteN coH-dA raluciheV( йËÒ¾¾ÒÀʹãÃÒÊÍè×ÊéªãÍè×¾àÒÁ¹Ò°ÃµÒÁººá¡ÍÍ¡Ù¶èÕ·§èÖ¹ËÃÒÊÍè×Ê
ÐÅáÂѨÔǹé¹à§èØÁÁé¹âǹáÕÁèÁËã¤Ø¹ã쵹¹ÒÂÕÂÅâ¹â¤·à elciheV-retnI( 쵹¶çÒèÇËÐÃÃÒÊÍè×ÊÃÒ¡¹Òé´Ò¹²Ñ¾ ÐÂÔé¨Ñͧèʹ¢Á¤Ò¹Á¤ººÐçÒéÃÊÍè×¾à )CVI : noitacinummoC
§ÒèÂ͹éÖ¢¡ÒÁ )STI : metsyS noitatropsnarT tnegilletnI(ÁÕ¹ÑÂÊÓ ¤ÑÞ à¹×èͧ´ŒÇÂÁ Õ¤ÇÒÁ¡ŒÒÇ˹ŒÒã¹ÈÒʵÃ�ãËÁ‹æ à¡Ô´¢Öé¹
¹ãÒé¹ËÇÒé¡ÁÒǤ§èÔ§ÒèÂÍÐÒ¾©à´⠹Òé´ æÂÒÅ˹ã»ä¹Ñ¡¹Ò¹¢èÙ¤§ÒéÃÊé´ä )IA : ecnegilletnI laicifitrA( ì°ÉÔ´ÐûÒÞÞÑ»ìõÊÒȹÍè׍àºÑ¢Ð¹ËÒ¾¹Ò¹ç»à¶ÃÒÁÒʹ¨ìµ¹Â¶ÃºÑ¡éËãÐÂÔé¨ÑÍÁÒǤ§ÒèÂÍé´ä¹éÖ¢Ô¡à¶ÃÒÁÒÊèÁäéÕ¹ÐÂÔéÑÍÁÒǤ é´äºÑ¢¹¤éÃä´âÔµÑÁ¹âµÑÍ
ÁÕ»ÃÐÊÔ·¸ÔÀÒ¾áÅлÅÍ´ÀÑÂËҡö¹µ�äÁ‹Ã‹ÇÁ¡Ñ¹·Ó §Ò¹à»š¹·ÕÁ§èËá쵹¶ÃéËãÍè×¾à ¹Ñ¡ÐÅá¹Ñ¡§èÖ«¹Ø¹ÊºÑ¹ÊÅÙÁÍ颹ÂèÕÅ»à¡ÅáÍè×¾à¹ÑÁ ÂÑÀ´ÍÅ»§ÒèÂͧÔè¹¹¶§Íé·¹ºé´äÃÒ¡éªã¶ÃÒÁÒÊéÕ¹µ¤Ò¹Í
ÕÁéÕ¹ÂÒè¢Í×äà§ÂâÁÍèתàÃҡ´â ÐÒ¾©à´âèÒèÃÒ¡ÁÍéÅ´ÇáÐÅá )V2V : elciheV-ot-elciheV( 쵹¶çֶ쵹¶úºá§éÑ·
ö¹µ �¶ Ö§â¤Ã§ÊÌҧ¾×é¹°Ò¹¢ŒÒ§·Ò§à¾×èÍÃͧÃѺ¡ÒÃÊ×èÍÊÒà ͢ ÁÒǤ·ºéÕ¹¡Ò¨¡Í¹ )I2V : erutcurtsarfnI-ot-elciheV(ÂÒ·Òé·ÒËÞÑ»ÐÅá TENAV ¹Ò§éªã쵡ØÂÐûÃÒ¡§ÒèÂÍÇѵ§Ö¶ÇÒèÅ¡
ÓÊèÕ· ÓÊÞѤ ¹ÒèÍéÙ¼¹Òè·è´áéËãÂÒ¡Ðû´Ø¨Íè×¾à ÂÇé´¡ÕÍ TENAV ºÑÃËÒé¹ËÇÒé¡éËãéÕ¹ÕÂÅâ¹â¤·àéËãÒ¹²Ñ¾ÂѨÔǹѡÂÇèªÐÅá¨ãÒé¢àéÙúÑÃÁÇèÃé´ä
»ä¹éÖ¢§èÔÂÕ´¤Ó ÊÓ X2V ,I2V ,V2V ,TENAV : ÞѤ
¨Ó ໚¹µŒÍ§ÁÕ¤ÇÒÁÊÒÁÒö·Ø¡Í‹ҧà·Õº෋ÒËÃ×Íà˹×Í¡Ç‹Ò¡ÒçÍ๵§Í¢¹ÑºØ¨¨Ñ»ÐÇÒÀÊéÙúÍÃÊѼÁÑÊÕÁ§Íéµ¹ÑÁ ÁؤºÇ¤ìÂÉعÁÕÁ
Óµ ¹¹¶§Íé·¹ºÃ¨Òè¾ÒÀÊ ¹èªà ÇѵºÍÃÁÍéÅ´Çá§èÔÊÐÅá á˹‹§ ¶Ã¡Íº³ÒÞÞÑʧèÊÃÒ¡ ¹éµ¹ç»à æ¹è×͹Ѥ¶Ã§Í¢ÇçÃàÁÒǤ §Ò·ÈÔ·¹ç»àç¡ ¹Ñ˹ѷС¡ÃºàÃÒ¡´Ô¡àÍè×Áà¹Í×µàÍ×ÃË ÇÂéÕÅà§Ò·Í¢Íè×¾à¹è×͹Ѥ
ÓÊÅÙÁÍ颧ÒèÂÍÇѵ ¨ã¹ÔÊѵÃÒ¡§ÒéÃÊéªãÍè×¾à¹Ñ¡¹ÂèÕÅ»à¡Åá§ÍéµèÕ·ÞѤ쵹¹Ò¹éѹ§Ñ éÕ¹ÒèÅËàÐÂÔéÑÍ쵹¶úÑÃËÒ Ê¹Íè׍àºÑ¢ÃÒ¡¹ãÕèÕ·
ÓèÁËã¤Ø ÕÁèÕ·ÂÒÊéÃäÃÒÊÍè×ʺºÐçéѵԵÃÒ¡ÕÁ§ÍéµÐèÕ·§èÔ§ÒèÂ͹ç»àÓʾÒÀÔ¸·ÔÊÐû éÕ¹ÁÒǤ·º¹ã§èÖ« 쵹¶çÒèÇËÐÃÃÒÊÍè×ÊÃÒ¡ºÑÃË
ӹ͢¹ÂÕ¢àéÙ¼ ¡ÒÁÁÊÐÒÁËàÁÒǤÕÁèÕ·§èÖ¹ËÃÒÊÍè×ʺºÐÃÕÂÅâ¹â¤·à͹ÊàÊÓ ÓÊÔ¡ÐÒ¾©àÂÒè¢Í×ä຺ÐÃÍפ¹èѹ 쵹¹ÒºÑÃË Ð¹ËÒ¾¹ÒºÑÃË(Vehicular Ad-Hoc Network : VANET)
อาจารยทปรกษา
)tcartsbA( อยดคทบ
บทนำา (Introduction)
รกฒวศงพรศ ลพรพ.รด.ศร ลกสตจรคอ ษงพรจข.รด,
2
Ad-Hoc Ó·Í×Ã˨ԡÐÒ¾©à §Ö¶ÂÒÁË ¹ÔµÒÅÒÉÒÀ¹ç»à Íè×¾àÓ¡é´äÔÁ´â§ÒèÂÍÐÒ¾©à줧ÊÐû´Ø¨ Òé¹Ë§ÇèÅéÇä¹¼á§ÒÇ´¹Ë
VANET §èʺÑçÍè×äà§éѵ´ÔµÃÒ¡ÕÁèÕ·ÃÒÊÍè×ÊÂÒè¢Í×äà¹ç»à oidaR egnaR trohS detacideD( ¨Ô¡ÐÒ¾©à¹éÑÊÐÂÐÃØ·ÔÇ draoB-nO( UBO ÒèÇ¡ÂÕÃà 쵹¶ùº )CRSD : noitacinummoC
§Ò·§Ò颹Ұ¹é×¾§ÒéÃʧäâÍ×Ã˧ҷ§Ò颧èÊÒÊàչҶʹºÐÅá )tinUÕÁ´â )tinU ediS-daoR( USR ÒèÇ¡ÂÕÃà ÃÒÊÍè×ÊÃÒ¡ºÑçÍÃÍè×¾à 9.5 èÕ¶ÁÒǤ¹è׍§Ç誹º ]1[ p11.208 EEEI ¹Ò°ÃµÒÁÅͤµâûâ
éËãÃÃʴѨ¡Ù¶é´ä§èÖ« )2 ÐÅá 1 èÕ·¾ÒÀ( )zHG 529.5-058.5( zHGÓÊéªã sseleriW( йËÒ¾¹ÒÂÁÍéÅ´Çá¾ÒÀʹãÂÒÊéÃäÂÒè¢Í×äàºÑÃË
¾ÒÀʹç»à§èÖ« )EVAW : stnemnorivnE raluciheV ni sseccA§Ö ÒÅÇà´ÍŵèÙÂͧŻá¹ÂèÕÅ»àÐÅáÇçÃà´ÇÃèÕ·¹Íè׍àÃÒ¡ÕÁèÕ·ÁÍéÅ´Çá ÍèµÂÍÃéÃ人áÅÙÁÍ颹ÂèÕÅ»à¡ÅáÃÒ¡ÕÁéËãÊÒ¡ÍâÔ»àèÕ·Åͤµâûâ¹ç»à ¹Ò¹ÒÅÇà¹Ô¡èÕ· æ§Òèµì¹ÙÊÔ¾ÃÒ¡¹ÇºÐáÂͤÍÃÃÒ¡¡Ò¨ÈÒû´â
Ó¡ÐÅáèÕ¶ÁÒǤ¹è׍º¶á 1 èÕ·¾ÒÀ ]2[ æ¹è×͹ҰõÒÁºÑ¡ºÂÕ·à p11.208 EEEI ¹Ò°ÃµÒÁ§Í¢§èʧÑÅ
Ó¨ÐûèÕ¶ÁÒǤ¹è׍º¶á 2 èÕ·¾ÒÀ p11.208 EEEI ¹Ò°ÃµÒÁ§Í¢ æ§Ò赧Íèª
Tran
smiss
ion
pow
er (d
Bm)
Frequency (GHz)
-10
10
2 4 6 8 10 12 56 58 60 62 64
0
UWBBluetoothZingBee60GHz802.11p
Safety Channel Safety Channel
Service ChannelsControlChannel
Service Channels
3
krowteN coH-dA raluciheV 3 èÕ·¾ÒÀ
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ÓÅÕÁººáÐÅá )yhcrareiH-noN/talF( ¹éÑ¢ §èÖ« )yhcrareiH( ¹éÑ¢ºÑ´éÕ¹»äÍèµÍé¢ÇÑ˹㧨ᡨáÂÒºÔ¸ÍÍ¢
RSU
OBU3OBU4
OBU5OBU1 OBU2
RSU
RSU = Road-Side UnitOBU = On-Board Unit (on each vehicle)
ÂÒÊéÃäÃÒÊÍè×ÊÂÒè¢Í×äà§ÂâÁÍèתàÃÒ¡§Ö¶§´Êá 3 èÕ·¾ÒÀ¡Ò¨¢Í§ VANET
• ¡ÒÃàª× èÍÁâ§à¤Ã×Í¢‹ÒÂÃÐËNjҧö¹µ �¡ÑºÃ¶Â¹µ � (Vehicle-to-Vehicle : V2V) ໚¹ÃٻẺ·ÕèöÊͧ¤Ñ¹¢Öé¹ä»
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• §èÊÒÊàչҶʺѡ쵹¶çÒèÇËÐÃÂÒè¢Í×äà§ÂâÁÍèתàÃÒ¡¶ÃèÕ·ººá»Ùùç»à )I2V : erutcurtsarfnI-ot-elciheV( §Ò·§Ò颧èʺÑÃÐÂÐùãÂÒÀ¹Ñ¡ÃÒÊÍè×ÊÂÒè¢Í×äà§ÂâÁÍèתà§Ò·§Ò颧èÊÒÊàÐÅá쵹¶áҨÅÙÁÍ颧èÊÃÒ¡¹ãéªãèÕ·ººá»Ùùç»à USR ÐÅá UBO §Í¢ ¹è×ÍèÕ·¹é×¾§Ñ»äÍ×ÃË )revreS retneC( §ÒÅ¡ÃÒ¡Ôúì¹ÙȧÑ»ä
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• yrevE-ot-elciheV( ÁʼººáÂÒè¢Í×äà§ÂâÁÍèתàÃÒ¡ - I2V ÐÅá V2V §éÑ· ¹éµ§Ò颺ºá§ÍʧéÑ·ÕÁèÕ·ººá»Ùùç»à )X2V : gniht
¹Ñ¡ÇÂÕ´à³ÇàÔú¹ã¹Ñ¤ÂÒÅË쵹¶ÃÍè×Áà¹éÖ¢Ô¡àШÇéÅáèÞËã¹ÇèÊ´⠺ºáÂÒè¢Í×äà§ÂâÁÍèתàШ¹Ñ¤ÐÅèµáÇéÅá )gniretsulC( ¹Ñ¡ÁèØÅ¡ÁÇÃ
Ó·èÕ·¹Ñ¤ìµ¹Â¶ÃºÑ¡ V2V )HC : daeH retsulC( ÁèØÅ¡Òé¹ËÇÑËèÕ·Òé¹Ë¹Ñ¤ìµ¹Â¶Ã¡Ò¨ÅÙÁÍé¢ÁÇúÇÃÐéÕ¹¹Ñ¤ÁèØÅ¡Òé¹ËÇÑ˹ç»àèշ쵹¶ÃÐÅá¹ã¹·áÇѵ¹ç»àÍè×¾à )MC : srebmeM retsulC( ÁèØÅ¡ ¡ÔªÒÁʹç»àèշ쵹¶çҷ§Ò颧èÊÒÊà¹Òè¼Â´âÅ¡ä§ÒèËèÕ·¹é×¾§Ñ»äÅÙÁÍé¢Í赧èÊÃÒ¡ I2V ººá¹Ñ¡ÂÒè¢Í×äà§ÂâÁÍèתàШ§Ò·§Ò颧èÊÒÊàºÑ¡ÁèØÅ¡Òé¹ËÇÑË
§èÊÍè×¾à æ¹è×ͧҷ§Ò颧èÊÒÊàºÑ¡§ÂâÁÍè×ªà ¶ÃÒÁÒʧҷ§Ò颧èÊÒÊàéÕ¹§éÑ·»ä¡ÍÍÅ¡ä§ÒèËèÙÂÍèÕ·èÕ·¹é×¾Í×Ã˧ÒÅ¡ÃÒ¡Ôúì¹ÙȧÑ»äÍèµÅÙÁÍé¢Íèµ
4
broadcast: v = 50 km/h
s1 s2 s3 s4 s5
ìÔ´¡ÑÈÕÁ¹Ñ¤¡Ø·¶Ãèշ´â¹Ñ¡ÅÙÁÍ颹ÂèÕÅ»à¡Åá§ÂâÁÍèתàÃÒ¡¹ç»àÓ·èÕ·¹Ëä¹Ñ¤¶ÃÕÁèÁä ¹Ñ¡ÁÂÕ·àÒè·à §´Êá 4 èÕ·¾ÒÀ¡Ò ÂÒè¢èÁá¹ç»àèÕ·Òé¹Ë
ciffarT gnizinagrO-fleS( SITOS ººÐç͢§ÂâÁÍèתàÃÒ¡¡äÅ¡§Í¢¹Ò°¹é×¾ººÐùç»àÐÅá¡ÃẺÐùç»à§èÖ« )metsyS noitamrofnI
2.1 ẺµŒ¹äÁŒ (Tree)ÓŧÒéÃʧäâÕÁ´â¹Ñ¡ÅÙÁÍ颹ÂèÕÅ»à¡Åá§ÂâÁÍèתàÃÒ¡¹ç»à ºÑ´
Ó¡¡Ù¶èÕ·¶ÃÕÁШ ÇѵÂÒµèÕ·§¤¹éÑ¢ ˹´ãËŒ·Ó ¹Ñ¤¶Ã ÂÒè¢èÁá¹ç»àèÕ·Òé¹Ë §Íà¹Ñ¡ÅÙÁÍ颹ÂèÕÅ»à¡ÅáèÁäШÂÒ袡ÙÅ ÂÒ袡ÙŹç»àШÂÒè¢èÁáºÍà æ¹è×Í
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)retsulC( ÁèØÅ¡ººá 2.2èÕ·¹Ñ¡§Òèµèµá éÁä¹éµººáºÑ¡ÂÒéŤèÕ·§ÂâÁÍèתàÃÒ¡¹ç»à
ÓŧÒéÃʧä⠧ÒéÃʧäâ¹ÂèÕÅ»àºÑûÃÒ¡ÕÁ ÇѵÂÒµèÕ·§¤èÁäШ¹éÑ¢ºÑ´ )HC : daeH retsulC( ÁèØÅ¡Òé¹ËÇÑËÍ×ÃËÂÒè¢èÁá쵹¶áÍ×ÅàѤÐÅá
Ð HC 5 èÕ·¾ÒÀ¡Ò ÁèØÅ¡§Í¢¾ÒÀÃÂÕ¶ÊàÒÉ¡ÑÃÍè×¾àÒÅÇà´ÍŵèÁËã
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]3[ )metsyS noitamrofnI ciffarT gnizinagrO-fleS( SITOS ººÐç͢§ÂâÁÍèתàÃÒ¡¡äÅ¡ 4 èÕ·¾ÒÀ
]4[ retsulC ººá§ÂâÁÍèתàÃÒ¡ 5 èÕ·¾ÒÀ
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)seigolopoT TENAV( TENAV งอขยาขงรคโบบแปร
1.แบบไมมลำดบขน (Flat/Non-Hierarchy)
2. แบบมลาาดบขน (Hierarchy)
5
take alternative route?
traffic information messages
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• ,Òé¹Ë´Ñµ§èÔǶùÍ×µà ,¹Ñ˹ѷС¡ÃºàÃÒ¡¹Í×µà( ÂÑÀ¹Í×µà ,¹¹¶Á«áÁÍ諧ÒéÃÊÍè¡ÃÒ¡ÕÁèÕ·´Ø¨¹Í×µà ,صËàԵѺØÍ´Ô¡à´Ø¨¹Í×µà
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