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ÇѱÛÁ¦¸ñ(Korean Title) |
ÀÎÁö Àü¼ú ¹«¼±¸Á¿¡¼ QoS º¸ÀåÀ» À§ÇÑ Á¤Ã¥±â¹Ý µ¿Àû ä³Î ¼±Åà |
¿µ¹®Á¦¸ñ(English Title) |
Policy-based Dynamic Channel Selection for QoS Guarantee in Cognitive Radio Tactical Networks |
ÀúÀÚ(Author) |
±èÁ¾¿¬
±èº¸¼º
±Ç¼¼ÈÆ
³ëº´Èñ
±è´ë¿µ
¹Ú¼ö¹ü
Jong-yon Kim
Bosung Kim
Sehoon Kwon
Byeong-hee Roh
Dae-Young Kim
Soo Bum Park
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¿ø¹®¼ö·Ïó(Citation) |
VOL 39 NO. 06 PP. 0468 ~ 0478 (2012. 12) |
Çѱ۳»¿ë (Korean Abstract) |
º» ³í¹®Àº ¹Ì·¡ ±º¿¡¼ ÀÎÁö ¹«¼± Åë½Å(CR, Cognitive Radio) ±â¼úÀ» Àû¿ëÇÑ Àü¼ú ¹«¼±¸Á(CRTNs, Cognitive Radio Tactical Networks)¿¡¼ÀÇ È¿À²ÀûÀÎ ÁÖÆļö »ç¿ë°ú Àü¼ú ¸Þ½ÃÁöÀÇ QoS(Quality-of-Service)¸¦ À§ÇÑ Á¤Ã¥ ±â¹Ý µ¿Àû ä³Î ¼±Åà ±¸Á¶¸¦ Á¦¾ÈÇÑ´Ù. Àü¼ú ¹«¼±¸Á¿¡¼´Â »ó¿ëÀÇ ±âÁö±¹°ú °°Àº coordinator°¡ Á¸ÀçÇÏÁö ¾Ê±â ¶§¹®¿¡, È¿À²ÀûÀΠä³Î »ç¿ëÀ» À§Çؼ °¢ »óȲ¸¶´Ù ¾î¶»°Ô ´ëÀÀÇÒ °ÍÀΰ¡¿¡ ´ëÇÑ °í·Á»çÇ×ÀÌ ÀÖ´Ù. ÀÌ¿¡ ´ëÇÑ ÇØ°áÃ¥À¸·Î Á¤Ã¤±â¹ÝÀÇ µ¿Àû ä³Î ¼±Åà ±¸Á¶¸¦ Á¦¾ÈÇϸç, ÀÌ´Â °¢ »óȲ¿¡ µû¸¥ ±ÔÄ¢À̳ª ÇൿÀ» »çÀü¿¡ Á¤Ã¥À¸·Î Á¤ÀÇÇÏ¿©, ƯÁ¤ coordinator°¡ ¾ø´õ¶óµµ ÇØ´ç »óȲÀÌ ¹ß»ýÇÏ¸é »çÀü Á¤ÀÇµÈ Á¤Ã¥¿¡ ÀÇÇؼ µ¿Àû ä³Î ¼±ÅÃÀ» ÇÏ´Â °ÍÀÌ´Ù. Áï, Àü¼ú ¹«¼±¸Á¿¡¼ ÀÛÀü»óȲÀ̳ª Àü¼úÅë½Åȯ°æÀÇ º¯È¿¡ µû¶ó ÁÖ »ç¿ëÀÚ(PU, Primary User)¿Í ºÎ »ç¿ëÀÚ(SU, Secondary User)ÀÇ Ã¤³ÎÀ» µ¿ÀûÀ¸·Î ¼±ÅÃÇÏ´Â °ÍÀ» ÀǹÌÇÑ´Ù. ¸ðÀÇ ½ÇÇè°á°ú º°µµÀÇ Á¤Ã¥ÀÌ ¾øÀÌ ÀÓÀÇ·Î µ¿Àû ä³Î ¼±ÅÃÇÏ´Â ±â¹ýº¸´Ù Á¤Ã¥ ±â¹ÝÀÇ ±â¹ýÀÌ Æ®·¡ÇÈ ·Îµå°¡ Áõ°¡ÇÔ¿¡ µû¶ó ¿ùµîÇÑ ¼º´ÉÇâ»óÀ» º¸¿´À¸¸ç, ƯÈ÷ ¼¼ºÎÀûÀ¸·Î´Â Àü¼ú ¸Þ½ÃÁöÀÇ Ã³¸®·®°ú µ¥ÀÌÅÍ ¼Õ½Ç Ãø¸é¿¡¼ QoS¸¦ º¸ÀåÇÒ ¼ö ÀÖ¾ú´Ù.
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¿µ¹®³»¿ë (English Abstract) |
In this paper, we propose a policy-based dynamic channel selection architecture to guarantee QoS (Quality-of-Service) for tactical messages in cognitive radio tactical networks. Dynamic channel selection should require right actions according to each situation because it has no coordinator such a commercial base station. To overcome this problem, we propose a policy-based architecture. This means the right rules and actions are defined as policy according to each situation, and dynamic channel selection operates itself without any coordinator according to pre-defined policy by pre-defined conditions. In other words, in tactical wireless networks the channels of PU(Primary User) and SU(Secondary User) are selected dynamically by the policy which is pre-defined according to combat situations and tactical spectrum environments. The proposed architecture is thoroughly examined by simulation method, and the results show that the performance in proposed architecture in term of throughput and packet loss ratio is more improved than that in no policy architecture according to increase traffic load.
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Å°¿öµå(Keyword) |
ÀÎÁö ¹«¼± Åë½Å
Àü¼ú ¹«¼±¸Á
µ¿Àû ä³Î ¼±ÅÃ
Á¤Ã¥±â¹Ý
Cognitive Radio
Tactical Networks
Dynamic channel selection
Policy-based
QoS
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ÆÄÀÏ÷ºÎ |
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