DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Lee, Hyuck-Jae | - |
dc.contributor.advisor | 이혁재 | - |
dc.contributor.author | Lee, Dong-Wook | - |
dc.contributor.author | 이동욱 | - |
dc.date.accessioned | 2011-12-28T03:02:22Z | - |
dc.date.available | 2011-12-28T03:02:22Z | - |
dc.date.issued | 2008 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=392933&flag=dissertation | - |
dc.identifier.uri | http://hdl.handle.net/10203/54962 | - |
dc.description | 학위논문(석사) - 한국정보통신대학교 : 공학부, 2008.2, [ vi, 54 p. ] | - |
dc.description.abstract | Passive RFID tags, which have no self-battery and just backscatter the energy from a reader, share a common channel. It causes a tag-to-tag collision problem when at least two or more tags communicate to the reader simultaneously. The dynamic frame slotted Aloha (DFS-Aloha) protocol is one of the well-known anti-collision algorithms to solve this problem. To maximize the system performance and enhance the reading speed of Aloha protocols, we propose a frame grouping algorithm, called grouped frame Aloha (GF-Aloha), which splits a large-frame of Aloha into several groups. The tags are allocated to each group according to their collision information at the previous frame. To implement the idea, tag structure and GF-Aloha protocol are designed based on the EPC Class 1 Generation 2. In addition, we also suggest a frame size estimator that enhances the Q-Algorithm and find the best parameters of the proposed estimation algorithm. Finally, combining the GF-Aloha and the proposed estimation algorithm, we suggest high speed anti-collision protocol for low-cost RFID tags. Simulation results show that the GF-Aloha algorithm outperforms the conventional non-grouped Aloha protocol and the proposed estimation algorithm also enhances the system performance. Moreover, the combination of GF-Aloha and the proposed estimation algorithm takes less identification time than DFS-Aloha with Q-Algorithm based on EPC Class 1 Generation 2 protocol. In conclusion, the proposed schemes enhances the identification time of DFS-Aloha for low-cost RFID systems. Moreover, the proposed anti-collision protocol can be adopted to not only supply chain management using low-cost RFID but also Aloha-based sensor network as an fast multiple access protocol. | eng |
dc.language | eng | - |
dc.publisher | 한국정보통신대학교 | - |
dc.subject | Passive tag | - |
dc.subject | RFID | - |
dc.subject | Dynamic Frame Slotted-Aloha | - |
dc.subject | 프레임 슬랏 알로하 | - |
dc.subject | 수동태그 | - |
dc.subject | 알에프아이디 | - |
dc.subject | Q-Algorithm | - |
dc.title | A study on enhanced anti-collision protocol for low-cost RFID systems | - |
dc.title.alternative | 저가 RFID 태그 시스템에서의 향상된 태그 충돌 방지 프로토콜 연구 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 392933/225023 | - |
dc.description.department | 한국정보통신대학교 : 공학부, | - |
dc.identifier.uid | 020064585 | - |
dc.contributor.localauthor | Lee, Hyuck-Jae | - |
dc.contributor.localauthor | 이혁재 | - |
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