A framework for end-to-end RSVP context transfer in Mobile IPv6(MIPv6) based on the architecture of F-HMIPv6 is proposed in this paper. The scheme provides an end-to-end RSVP context transfer for real-time application...A framework for end-to-end RSVP context transfer in Mobile IPv6(MIPv6) based on the architecture of F-HMIPv6 is proposed in this paper. The scheme provides an end-to-end RSVP context transfer for real-time applications to overcome the weakness of Context Transfer Protocol which can not meet the need of end-to-end QoS mechanisms because contexts are only transferred between Access Routers(ARs), therefore they can promptly get the same forwarding process, minimize the handover service disruption, and avoid initiating the end-to-end RSVP signaling from scratch after an MN performs handovers. It may also reduce the signaling overhead and handover latencies by adopting the F-HMIPv6architecture. The performance of the approach is compared with the re-initiating RSVP signaling to re-establish QoS states using network simulator, and the numerical results show that the scheme has the less latency and packet loss than that of the re-initiating approach.展开更多
This paper is aimed at presenting some suggestions to candidates who are taking the IELTS to get higher marks in speaking section.The first suggestion is from psychological aspect,using a variety of self-help material...This paper is aimed at presenting some suggestions to candidates who are taking the IELTS to get higher marks in speaking section.The first suggestion is from psychological aspect,using a variety of self-help materials to improve confidence.The second is to take a close look at the marking criteria of IELTS and make good use of it.The third encourages students to form a habit of thinking critically through invoking a range of academic perspectives.Evidences show that the suggestions are effective in raising scores on the speaking component since they have ever been applied to some students of the author.展开更多
文摘A framework for end-to-end RSVP context transfer in Mobile IPv6(MIPv6) based on the architecture of F-HMIPv6 is proposed in this paper. The scheme provides an end-to-end RSVP context transfer for real-time applications to overcome the weakness of Context Transfer Protocol which can not meet the need of end-to-end QoS mechanisms because contexts are only transferred between Access Routers(ARs), therefore they can promptly get the same forwarding process, minimize the handover service disruption, and avoid initiating the end-to-end RSVP signaling from scratch after an MN performs handovers. It may also reduce the signaling overhead and handover latencies by adopting the F-HMIPv6architecture. The performance of the approach is compared with the re-initiating RSVP signaling to re-establish QoS states using network simulator, and the numerical results show that the scheme has the less latency and packet loss than that of the re-initiating approach.
文摘This paper is aimed at presenting some suggestions to candidates who are taking the IELTS to get higher marks in speaking section.The first suggestion is from psychological aspect,using a variety of self-help materials to improve confidence.The second is to take a close look at the marking criteria of IELTS and make good use of it.The third encourages students to form a habit of thinking critically through invoking a range of academic perspectives.Evidences show that the suggestions are effective in raising scores on the speaking component since they have ever been applied to some students of the author.
