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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹ÀÎÅͳÝÁ¤º¸ÇÐȸ ³í¹®Áö

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Current Result Document : 3 / 5 ÀÌÀü°Ç ÀÌÀü°Ç   ´ÙÀ½°Ç ´ÙÀ½°Ç

ÇѱÛÁ¦¸ñ(Korean Title) ÀÎÁö ¶óµð¿À ³×Æ®¿öÅ©¿¡¼­ ¾ÈÀüÇÑ ºÐ»ê ½ºÆåÆ®·³ ¼¾½ÌÀ» À§ÇÑ Çâ»óµÈ ÆòÆDZâ¹Ý Ç»Àü ¸ÞÄ¿´ÏÁò
¿µ¹®Á¦¸ñ(English Title) Enhanced Reputation-based Fusion Mechanism for Secure Distributed Spectrum Sensing in Cognitive Radio Networks
ÀúÀÚ(Author) ±è¹ÌÈñ   ÃßÇö½Â   Mihui Kim   Hyunseung Choo  
¿ø¹®¼ö·Ïó(Citation) VOL 11 NO. 06 PP. 0061 ~ 0072 (2010. 12)
Çѱ۳»¿ë
(Korean Abstract)
ÀÌ¹Ì ÇÒ´çµÈ ¹«¼± ÀÚ¿øÀÇ °í°¥°ú »õ·Î¿î ¹«¼± ¼­ºñ½º¿¡ ´ëÇÑ ÁÖÆļöÀÇ ¼ö¿ä Áõ°¡´Â ÀÎÁö ¶óµð¿À ±â¼úÀÇ Á߿伺À» ºÎ°¢½ÃÅ°°í ÀÖ´Ù. ÀÎÁö ¶óµð¿À ±â¼úÀº ±âÁ¸¿¡ ÇÒ´çµÇ¾î »ç¿ëÁßÀÎ ÁÖÆļöÀÇ »ç¿ë ÇöȲÀ» ½ºÄ³´×ÇÏ¿© ºó ä³Î °¨Áö ½Ã ÇØ´ç ä³ÎÀ» ÅëÇØ Åë½ÅÇÏ´Â °³³äÀÌ´Ù. ÀÌ·¯ÇÑ ±â¼úÀ» »ç¿ëÇÑ ÀÎÁö ¶óµð¿À ³×Æ®¿öÅ©¿¡¼­ ½ºÆåÆ®·³ ¼¾½ÌÀÇ Á¤È®¼ºÀ» ³ôÀÌ°íÀÚ ´Ù¼öÀÇ ³ëµå¿¡¼­ ¼¾½ÌÇÏ¿© Á¾ÇÕ ÆÇ´ÜÇÏ´Â ºÐ»ê ½ºÆåÆ®·³ ¼¾½Ì ±â¼úÀÌ ¿¬±¸µÇ¾î ¿Ô´Ù. ±×·¯³ª Âü¿©ÇÏ´Â ¼¾½Ì³ëµåÀÇ À§Çù °¡´É¼º ¶§¹®¿¡ ÇØ´ç ¸ÞÄ¿´ÏÁò¿¡¼­ÀÇ ¾ÈÀü¼º º¸Àå ±â´ÉÀÌ ÇʼöÀûÀÌ´Ù. ÀÌ¿¡ ¼¾½Ì³ëµåÀÇ ÆòÆÇ°ª(reputation)À» ±â¹ÝÀ¸·Î WSPRT(weighted sequential probability ratio test)¸¦ Àû¿ëÇÏ¿© ¼¾½Ì °á°úµéÀ» Ç»ÀüÇÏ´Â RDSS ¸ÞÄ¿´ÏÁòÀÌ Á¦¾ÈµÇ¾ú´Ù. ±×·¯³ª RDSS¿¡¼­´Â ¼¾½Ì °á°úÀÇ ÀÔ·Â ¼ø¼­¿¡ µû¶ó WSPRT ¼öÇà Ƚ¼ö°¡ ´Ã¾î³¯ ¼ö ÀÖ°í, °ø°Ý ´çÇÑ ¼¾½Ì³ëµåÀÇ ¼¾½Ì°ª¿¡ ´ëÇØ ºü¸£°Ô ´ëóÇÒ ¼ö ¾ø´Ù´Â ´ÜÁ¡ÀÌ ÀÖ´Ù. ÀÌ¿¡ º» ³í¹®¿¡¼­´Â ÆòÆÇ°ªÀÌ ³ôÀº ¼¾½Ì°ªºÎÅÍ ¿ì¼±ÀûÀ¸·Î WSPRT¿¡ ÀÔ·ÂÇϸç, ÆòÆÇ°ª º¯È­¸¦ Æ®·£µå °ªÀ¸·Î °è»êÇÏ°í À̸¦ ÀÌ¿ëÇÏ¿© °ø°Ý°¡´É¼ºÀ» ŸÁøÇÏ°í ±× °¡´É¼ºÀÌ ³ôÀº ¼¾½Ì°ªÀÎ °æ¿ì Ç»Àü¿¡¼­ ¹èÁ¦½ÃÄÑ ºü¸£°Ô °ø°Ý¿¡ ´ëÀÀÇÒ ¼ö ÀÖ´Â ¸ÞÄ¿´ÏÁòÀ» Á¦¾ÈÇÑ´Ù. ½Ã¹Ä·¹ÀÌ¼Ç °á°ú¸¦ ÅëÇØ º» ³í¹®¿¡¼­ Á¦¾ÈÇÑ ¸ÞÄ¿´ÏÁòÀÌ RDSSº¸´Ù ÀûÀº ¼öÀÇ ¼¾½Ì°ªÀ» °¡Áö°í º¸´Ù Á¤È®ÇÏ°Ô À¯ÈÞ Ã¤³ÎÀ» °¨ÁöÇÏ¿© °ø°Ý ´ëÀÀ¿¡ ¿ì¼öÇÑ ¼º´ÉÀ» Á¦°øÇÔÀ» ÀÔÁõÇÏ¿´´Ù.
¿µ¹®³»¿ë
(English Abstract)
Spectrum scarcity problem and increasing spectrum demand for new wireless applications have embossed the importance
of cognitive radio technology; the technology enables the sharing of channels among secondary (unlicensed) and primary (licensed) users on a non-interference basis after sensing the vacant channel. To enhance the accuracy of sensing, distributed spectrum sensing is proposed. However, it is necessary to provide the robustness against the compromised sensing nodes in the distributed spectrum sensing. RDSS, a fusion mechanism based on the reputation of sensing nodes and WSPRT (weighted sequential probability ratio test), was proposed. However, in RDSS, the execution number of WSPRT could increase according
to the order of inputted sensing values, and the fast defense against the forged values is difficult. In this paper, we propose an enhanced fusion mechanism to input the sensing values in reputation order and exclude the sensing values with the high possibility to be compromised, using the trend of reputation variation. We evaluate our mechanism through simulation. The results
show that our mechanism improves the robustness against attack with the smaller number of sensing values and more accurate detection ratio than RDSS.
Å°¿öµå(Keyword) Secure Spectrum Sensing   Cognitive Radio Networks   Fusion Mechanism   Reputation.   ¾ÈÀüÇÑ ½ºÆåÆ®·³ ¼¾½Ì   ÀÎÁö ¶óµð¿À ³×Æ®¿öÅ©   Ç»Àü ¸ÞÄ¿´ÏÁò   ÆòÆÇ  
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