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Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
VANETȯ°æ¿¡¼ GPSR ¶ó¿ìÆà ÃÖÀûÈ ±â¹ý |
¿µ¹®Á¦¸ñ(English Title) |
Route Optimization for GPSR in VANET |
ÀúÀÚ(Author) |
Àå³ç
񊨪
±èÁ¾¿Ï
±è±âõ
Ning Zhang
Yan Jin
Jongwan Kim
Keecheon Kim
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¿ø¹®¼ö·Ïó(Citation) |
VOL 23 NO. 02 PP. 0001 ~ 0009 (2009. 09) |
Çѱ۳»¿ë (Korean Abstract) |
GPSR(Greedy Perimeter Stateless Routing)Àº Â÷·® °£ ad hoc ³×Æ®¿öÅ©¿¡¼ À§Ä¡±â¹Ý ¶ó¿ìÆà ÇÁ·ÎÅäÄÝÀÌ´Ù. GPSR¿¡¼ÀÇ ¶ó¿ìÆÃÀº greedy forwardingÀ» »ç¿ëÇÏÁö¸¸ Â÷·® ¹Ðµµ°¡ ³ôÀº VANET(Vehicle Ad hoc NETwork)ȯ°æ¿¡¼´Â ÇÑ°è°¡ ÀÖ´Ù. ÀÌ·¯ÇÑ ÇѰ踦 ±Øº¹Çϱâ À§ÇÏ¿© º» ³í¹®¿¡¼´Â »õ·Î¿î ÇÁ·ÎÅäÄÝÀ» Á¦¾ÈÇÏ¿´´Ù. º» ³í¹®¿¡ Á¦½ÃµÈ ±â¹ýÀº current node, next-hop node ±×¸®°í destination node °£ÀÇ °ü°è¸¦ ¹Ý¿µÇÑ °Å¸®¿Í ¸éÀû °ªµéÀ» ±¸ÇÏ°í À̸¦ ÅëÇØ ´ÙÀ½ È©À» °áÁ¤ÇÑ´Ù. ±×¸®°í °¡ÁßÄ¡¸¦ ¼±ÅÃÇÏ¿© ¹Ðµµ°¡ ³ôÀº ȯ°æ°ú ¹Ðµµ°¡ ³·Àº ȯ°æ¿¡¼ ´Ù Àß ÀûÀÀÇÒ ¼ö ÀÖµµ·Ï ÇÏ¿´´Ù. °¡ÁßÄ¡¸¦ ±â¹ÝÀ¸·Î Çϸé Â÷·®ÀÌ ¹ÐÁýµÇ°Å³ª Èñ¹ÚÇÑ È¯°æÇÏ¿¡¼ GPSR º¸´Ù ´õ ÃÖÀûÈµÈ °æ·Î¸¦ ã¾Æ³½´Ù. ¼º´ÉÆò°¡´Â ¼öÇÐÀû ¸ðµ¨°ú ³×Æ®¿öÅ© ½Ã¹Ä·¹ÀÌÅÍÀÎ NS¸¦ ÀÌ¿ëÇÏ¿© º» ¸ðµ¨¿¡ ±â¹ÝÇÑ °í¼Óµµ·Î ½Ã¹Ä·¹À̼ÇÀ» ÁøÇàÇÏ¿´´Ù. °á°úÀûÀ¸·Î º¼ ¶§, º» ³í¹®¿¡ Á¦½ÃµÈ ±â¹ýÀº ÆÐŶ Àü¼Û·üÀº GPSRº¸´Ù ¶Ñ·ÇÇÑ ¼º´ÉÇâ»óÀ» º¸¿©ÁÖÁö ¸øÇßÁö¸¸ ½Ã°£ Áö¿¬ Ãø¸é¿¡¼ GPSRº¸´Ù ³ªÀº °á°ú¸¦ º¸¿© ÁÖ¾ú´Ù.
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¿µ¹®³»¿ë (English Abstract) |
A new mechanism for optimizing the route of the greedy parts of GPSR(Greedy Perimeter Stateless Routing) is proposed in this paper. By studying GPSR, The greedy part of GPSR is limited to find the most optimized route, especially in the denser scenario of VANET(Vehicle Ad hoc NETwork). Regarding this problem, we try to propose a mechanism to find an optimized route. In our proposal, we give out a formula to figure out a unique value for each neighbor. The one with the smallest value will be chosen as the next forwarding hop. The main advantage of our mechanism is that it integrates the influence of both of the denser and sparse environment. Therefore, wherever the vehicles are located, we can always find an optimized route comparing with GPSR. In this paper, we also provide a mathematical model to evaluate the performance of our proposal. Basing on the model, we use NS-network simulator to simulate the highway condition. According to the result, it doesn¡¯t bring us a remarkable improvement for the packet delivery ratio, but it shows better performance than GPSR for transmitting time delay.
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Å°¿öµå(Keyword) |
VANET
GPSR
¶ó¿ìÆÃ
ÃÖÀûÈ
VANET
GPSR
Routing
Optimization
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ÆÄÀÏ÷ºÎ |
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