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Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
À§Ä¡±â¹Ý ¼ºñ½º¿¡¼ È¿À²Àû °Ë»ö°ú »ç¿ëÀÚ Á¤º¸º¸È£¸¦ À§ÇÑ Çâ»óµÈ ±×¸®µå ±â¹Ý ±ËÀû Ŭ·ÎÅ· ±â¹ý |
¿µ¹®Á¦¸ñ(English Title) |
Enhanced Grid-Based Trajectory Cloaking Method for Efficiency Search and User Information Protection in Location-Based Services |
ÀúÀÚ(Author) |
À±ÁöÇý
¼ÛµÎÈñ
äõ¿ø
¹Ú±¤Áø
Ji-Hye Youn
Doo-Hee Song
Tian-Yuan Cai
Kwang-Jin Park
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¿ø¹®¼ö·Ïó(Citation) |
VOL 07 NO. 08 PP. 0195 ~ 0202 (2018. 08) |
Çѱ۳»¿ë (Korean Abstract) |
½º¸¶Æ®Æù, GPS ³×ºñ°ÔÀ̼ǰú °°Àº À§Ä¡ ÀÀ¿ëÇÁ·Î±×·¥ÀÌ ¹ß´ÞÇÔ¿¡ µû¶ó À§Ä¡ ¹× ±ËÀû ÇÁ¶óÀ̹ö½Ã¸¦ º¸È£Çϱâ À§ÇÑ ¿¬±¸°¡ È°¹ßÈ÷ ÁøÇà µÇ°í ÀÖ´Ù. À§Ä¡ °ü·Ã ¼ºñ½º¸¦ Á¦°ø¹Þ±â À§Çؼ´Â ÀÚ½ÅÀÇ Á¤È®ÇÑ À§Ä¡¸¦ ¼¹ö¿¡°Ô °ø°³ÇØ¾ß ÇÑ´Ù. ±×·¯³ª »ç¿ëÀÚ À§Ä¡ÀÇ °ø°³´Â ¼¹ö¿¡°Ô ÀÚ½ÅÀÇ À§Ä¡»Ó¸¸ ¾Æ´Ï¶ó ±ËÀû±îÁö ³ëÃâÇÏ°Ô µÇ¾î »ç»ýÈ° ħÇØÀÇ ¿ì·Á°¡ ÀÖ´Ù. ¶ÇÇÑ »ç¿ëÀÚ°¡ ¼¹ö¿¡°Ô ¿äûÇÑ Á¤º¸´Â À§Ä¡ Á¤º¸»Ó¸¸ ¾Æ´Ï¶ó ¸ÖƼ¹Ìµð¾î Á¤º¸(À§Ä¡¿¡ ´ëÇÑ »çÁø, ¸®ºä µî)¸¦ Æ÷ÇÔÇÏ°í Àֱ⠶§¹®¿¡ ¼¹ö°¡ ó¸®ÇØ¾ß ÇÏ´Â ºñ¿ë ¹× »ç¿ëÀÚ°¡ ¹Þ¾Æ¾ßÇÏ´Â Á¤º¸°¡ Áõ°¡ ÇÏ°Ô µÈ´Ù. µû¶ó¼ À̸¦ ÇØ°áÇϱâ À§ÇØ º» ³í¹®¿¡¼´Â EGTC (Enhanced Grid-based Trajectory Cloaking) ±â¹ýÀ» Á¦¾ÈÇÑ´Ù. EGTC ±â¹ýÀº ±âÁ¸ GTC (Grid-based Trajectory Cloaking) ±â¹ý°ú ¸¶Âù°¡Áö·Î »ç¿ëÀÚ ±ËÀûÀ» »ç¿ëÀÚ°¡ ¿øÇÏ´Â ÇÁ¶óÀ̹ö½Ã ·¹º§(UPL: User¡¯s desired Privacy Level) ¼öÁØÀ¸·Î ±×¸®µå¸¦ ºÐÇÒÇÏ¿© Ŭ·ÎÅ· ¿µ¿ªÀ» »ý¼º ÇÑ ÈÄ, ·£´ýÇÑ ÁúÀÇ ¼ø¼¸¦ Á¤ÇÑ´Ù. ´ÙÀ½ ´Ü°è·Î »ç¿ëÀÚ°¡ À̵¿ÇÏ°íÀÚ ÇÏ´Â °æ·Î¿¡ ÇØ´çÇÏ´Â ¼ºê ±×¸®µå ¼¿À» c(x,y)·Î °£ÁÖÇØ ÇÊ¿äÇÑ Á¤º¸¸¦ »öÀÎÀ¸·Î ±¸¼ºÇØ ¹Þ´Â´Ù. Á¦¾È ±â¹ýÀº ±âÁ¸ GTC ±â¹ý°ú °°ÀÌ ±ËÀû ÇÁ¶óÀ̹ö½Ã¸¦ º¸ÀåÇÏ¸é¼ »ç¿ëÀÚ°¡ ûÃëÇØ¾ß ÇÏ´Â Á¤º¸ÀÇ ¾çÀ» ÁÙ¿´´Ù. ½ÇÇè °á°ú¸¦ ÅëÇÏ¿© Á¦¾È ±â¹ýÀÇ ¿ì¼ö¼ºÀ» Áõ¸íÇÏ¿´´Ù.
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¿µ¹®³»¿ë (English Abstract) |
With the development of location-based applications such as smart phones and GPS navigation, active research is being conducted to protect location and trajectory privacy. To receive location-related services, users must disclose their exact location to the server. However, disclosure of users¡¯ location exposes not only their locations but also their trajectory to the server, which can lead to concerns of privacy violation. Furthermore, users request from the server not only location information but also multimedia information (photographs, reviews, etc. of the location), and this increases the processing cost of the server and the information to be received by the user. To solve these problems, this study proposes the EGTC (Enhanced Grid-based Trajectory Cloaking) technique. As with the existing GTC (Grid-based Trajectory Cloaking) technique, EGTC method divides the user trajectory into grids at the user privacy level (UPL) and creates a cloaking region in which a random query sequence is determined. In the next step, the necessary information is received as index by considering the sub-grid cell corresponding to the path through which the user wishes to move as c(x,y). The proposed method ensures the trajectory privacy as with the existing GTC method while reducing the amount of information the user must listen to. The excellence of the proposed method has been proven through experimental results.
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Å°¿öµå(Keyword) |
À§Ä¡±â¹Ý¼ºñ½º
Á¤º¸ º¸È£
ºê·Îµåij½ºÆ®
»öÀÎ
Location-Bsed Services
Information Protection
Broadcast
Index
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