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ÇѱÛÁ¦¸ñ(Korean Title) |
´ÙÁß-È© ¹«¼± ³×Æ®¿öÅ© ȯ°æ¿¡¼ ¼ö¸í ÃÖ´ëȸ¦ À§ÇÑ ¶ó¿ìÆà ¾Ë°í¸®Áò |
¿µ¹®Á¦¸ñ(English Title) |
Lifetime Maximizing Routing Algorithm for Multi-hop Wireless Networks |
ÀúÀÚ(Author) |
ÀÌ°ÇÅÃ
ÇѽÂÀç
¹Ú¼±ÁÖ
Keontaek Lee
Seungjae Han
Sunju Park
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¿ø¹®¼ö·Ïó(Citation) |
VOL 35 NO. 04 PP. 0292 ~ 0300 (2008. 08) |
Çѱ۳»¿ë (Korean Abstract) |
¹«¼± ¸Þ½¬ ³×Æ®¿öÅ©³ª ¹«¼± ¼¾¼ ³×Æ®¿öÅ©¿Í °°Àº ´ÙÁß-È©(Multi-hop) ¹«¼± ³×Æ®¿öÅ©¿¡¼´Â ³ëµåµéÀÌ ¹èÅ͸®¸¦ ÀÌ¿ëÇÏ¿© ÀÛµ¿ÇÏ´Â °æ¿ì°¡ ¸¹±â ¶§¹®¿¡ ¿¡³ÊÁö È¿À²ÀûÀÎ ¶ó¿ìÆÃÀÌ Áß¿äÇÑ ¹®Á¦ÀÌ´Ù. Áö±Ý±îÁö °¡Àå ¿¡³ÊÁö È¿À²ÀûÀÎ °æ·Î¸¦ ã´Â ¿©·¯ ±â¹ýµéÀÌ Á¦¾ÈµÇ¾úÁö¸¸ ÀÌ·± ¹æ½ÄÀº ã¾Æ³½ °æ·Î¸¸À» »ç¿ëÇÔÀ¸·Î½á ±× °æ·Î »óÀÇ ³ëµåµéÀÇ ¿¡³ÊÁö°¡ ÁýÁßÀûÀ¸·Î ¼Ò¸ðµÇ¾î ³×Æ®¿öÅ©ÀÇ ÀüüÀûÀÎ ¼ö¸í(lifetime)À» ÃÖ´ëÈÇÏÁö ¸øÇÑ´Ù´Â ´ÜÁ¡À» °¡Áø´Ù. ¶ÇÇÑ ÀÌ·± ´ÜÁ¡¿¡ Âø¾ÈÇÏ¿© ³×Æ®¿öÅ©ÀÇ ¼ö¸íÀ» ÃÖ´ëÈÇϱâ À§ÇØ ¿©·¯ °³ÀÇ °æ·ÎµéÀ» º¯°æÇØ°¡¸ç »ç¿ëÇÏ´Â ±â¹ýµé ¿ª½Ã Á¦¾ÈµÇ¾úÁö¸¸ °æ·Î ¼³Á¤ ¹× º¯°æ ½Ã¿¡ ¹ß»ýÇÏ´Â ¿À¹öÇìµå°¡ Å©´Ù´Â ÇѰ踦 °¡Áö°í ÀÖ´Ù. º» ³í¹®Àº ¼±Çü ÇÁ·Î±×·¡¹Ö(Linear Programming)À» ÀÌ¿ëÇÏ¿© ³×Æ®¿öÅ©ÀÇ ¼ö¸íÀ» ÃÖ´ëȽÃÅ°´Â ´ÙÁß ÃÖÀû ¶ó¿ìÆÃÀ» ±¸ÇÏ°í ±× °á°ú¿¡ ´ÜÀÏ ÃÖÀû ¶ó¿ìÆÃÀ» ±¸ÇÏ´Â ±Ù»ç ¾Ë°í¸®Áò(approximation algorithm)À» Àû¿ëÇÏ´Â ¹æ½ÄÀ» Á¦¾ÈÇÑ´Ù. ½Ã¹Ä·¹À̼ÇÀ» ÅëÇØ Á¦¾ÈÇÑ ¹æ½ÄÀÇ ¼º´ÉÀ» ±âÁ¸ÀÇ ´Ù¸¥ ±â¹ýµéÀÇ ¼º´É°ú ºñ±³ÇÑ´Ù.
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¿µ¹®³»¿ë (English Abstract) |
In multi-hop wireless networks like Wireless Mesh Networks (WMN) and Wireless Sensor Networks (WSN), nodes often rely on batteries as their power source. In such cases, energy efficient routing is critical. Many schemes have been proposed to find the most energy efficient path, but most of them do not achieve optimality on network lifetime. Once found, the energy efficient path is constantly used such that the energy of the nodes on the path is depleted quickly. As an alternative, the approaches that dynamically change the path at run time have also been proposed. These approaches, however, involve high overhead of establishing multiple paths. In this paper, we first find an optimal multi-path routing using LP. Then we apply an approximation algorithm to derive a near-optimal solution for single-path routing. We compare the performance of the proposed scheme with several other existing algorithms through simulation.
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Å°¿öµå(Keyword) |
´ÙÁß-È© ¹«¼± ³×Æ®¿öÅ©
¼ö¸í ÃÖ´ëÈ
¶ó¿ìÆÃ
±Ù»ç ¾Ë°í¸®Áò
Multi-hop wireless networks
lifetime maximization
routing
approximation algorithm
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ÆÄÀÏ÷ºÎ |
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