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Providing Quality-of-Service (QoS) guarantees and mobility support for Internet devices has become a hot research topic in the Next Generation Internet research, since mobile computing is getting widespread. Context transfers allow better node mobility support, and avoid re-initiation of signaling to and from a Mobile Node (MN). However, Context Transfer Protocol (CTP) [1] proposed by IETF can not...
Spectrum handoff causes performance degradation of the cognitive network when the primary user reclaims its right to access the licensed spectrum. In a multi-hop cognitive network, this problem becomes even worse since multiple links are involved. Spectrum handoff of multiple links seriously affects the network connectivity and routing. In this paper, we describe a cross-layer optimization approach...
Re-authentication delay is a major concern of fast handoff in wireless mesh networks. Most recent efforts focus on proactive approaches by transferring security context to potential target mesh routers before handoff occurs. However, the efficiency and effectiveness of such approaches are significantly affected by the density of potential targets and the accuracy of handoff prediction which is in...
This paper proposes a solution which combines DiffServ with M-MPLS to provide a scalable and efficient QoS guarantees in the future 4G mobile communication networks. The end-to-end differentiated services are obtained by concatenation of per-domain services and SLS between adjacent domains along the path that the traffic crosses in going from source to destination. The COPS-SLS protocol is used as...
This paper addresses RSVP context extraction, a complement to the end-to-end RSVP context transfer scheme we proposed previously. Based on RSVP/ns using network simulator ns2 platform, how to extract RSVP context required is described, so as to establish RSVP context information directly in the new added routers along the new data path for the real-time applications after the mobile node undergoes...
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