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A Pre-Resource Reservation Mechanism using NSIS protocol  

Kim, Sun-Young (이화여자대학교 컴퓨터정보통신학과)
Byun, Hae-Sun (이화여자대학교 컴퓨터정보통신학과)
Lee, Mee-Jeong (이화여자대학교 컴퓨터정보통신학과)
Abstract
In the Internet Engineering Task Force(IETF), Next Step in Signaling(NSIS) working group, proposed a mechanism to discover the Crossover Node(CRN), when the route is changed by Mobile Node(MN) handover. The CRN is divergence or convergence node on old and new path for reserving resources. Trough the CRN discovery mechanism, it possible to reduce a signaling delay and avoid the redundant reservation on the common path between old and new path. However, the QoS(Quality of Service) can be guaranteed continuously while the MN is performing handover, it is needed to pre-reserve the resource on the new path before completion of the handover. When the nodes on the new path try to make a pre-resource reservation before the handover, it is difficult to pre-reserve the resource with the existing CRN discovery mechanism. Therefore, we proposed a Passive CRN(PCRN) discovery scheme and pre-resource reservation mechanism. The PCRN which means an initial common point between the current reserved and the new paths, where the handover can take place.
Keywords
Pre-resource reservation; Crossover Node(CRN); Quality of Service(QoS); Handover; Next Step in Signaling protocol(NSIS);
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