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Scheduling algorithm is one of critical factors to ensure Quaulity of Service in IEEE802.16 mesh network. Scheduling algorithm of control subframe in distributed mesh network was defined in IEEE802.16 standard. But that of data subframe has not defined. The researches on minislot scheduling algorithm of data subframe were focused on some aspects of(More)
Various network applications have different quality of service requirements. The capability to provide flow based QoS support has become very important for the design of modern switches and routers. GPS is an idealized fluid model that can provide flow based performance guarantees, various packet approximation algorithms of GPS were proposed in literatures.(More)
During the execution period of composite Web services, the conventional centralized orchestration (CO) tends to incur various drawbacks such as unnecessary traffic, inappropriate dependencies, etc. Decentralized orchestration is advocated to solve these drawbacks but results in some other ones if the pure decentralized orchestration (PDO) is adopted such as(More)
High-speed switching, QoS provisioning, security, and mobility are main challenges faced with existing networks and to be confronted by NGN researchers and developers. This paper promotes a BSF-OES strategy (Backbone Substrate First, Outwards Expansion Second) towards NGN with a redefined out-of-band concept. In other words, we shall first focus on the(More)
Based on the background of SUPANET, this paper present a novel fair scheduling algorithm, which we call Smoothed Fair Scheduling based on Timeslot Reservation (TRSFS). TRSFS decomposes the data scheduling process into two stages: 1) data-queues generate and sent out schedule-requests at fixed rate according to the reserved timeslots and 2) The arbiter(More)
Guarantee of QoS (quality of service) and mobility management are important research areas in NGN (next generation networks). Most people have been taking a route of mobile IP over MPLS (MIoM) to meet such challenge. However, MIoM has a drawback considering that MPLS itself does not have any direct control over transmission at the physical layer, instead,(More)