There i s an increasing demand for Internet core nodes to have (I) quality-of-service (QoS) guarantees and (2) higher switching capacity. The combined input and output queued (CiOQ) switching has been shown to be a promising solution to meet such demand. However, many of the proposed scheduling algorithms fo r a CIOQ switch cannot be practically implemented due to problems from scalability and ...

Packet scheduling provides a way to reduce routing control and guarantee overall throughput. An interesting special case of the packet scheduling is all-to-all broadcast in which every transmitter/receiver pair has exactly one packet to be transferred. Several optimal scheduling algorithms have been proposed for the all-to-all broadcast problem in Wavelength Division Multiplexed (WDM) optical s...

Multipath TCP (MPTCP) is one of the leading protocols that support multipath operation in a transport layer. However, depending on the network and the receiver buffer, the original MPTCP can experience throughput degradation, underutilizing the network capacity compared to the regular TCP. Furthermore, MPTCP can result in a large packet interval. In this paper, we propose a new scheduling schem...

The integration of Ethernet Passive Optical Network (EPON) and Worldwide Interoperability for Microwave Access (WiMAX) is regarded as a promising access solution in realizing fixed mobile convergence (FMC) networks, which uses a single network infrastructure to provide both wired and wireless access services, and a good match of capacity hierarchy between EPON and WiMAX by using EPON as a backh...

| We propose and develop a novel virtual time reference system as a unifying scheduling framework to provide scalable support for guaranteed services. This virtual time reference system is designed as a conceptual framework upon which guaranteed services can be implemented in a scalable manner using the DiiServ paradigm. The key construct in the proposed virtual time reference system is the not...

Packet networks are currently enabling the integration of traffic with a wide range of characteristics that extend from video traffic with stringent QoS requirements to the best-effort traffic requiring no guarantees. QoS guarantees can be provided in conventional packet networks by the use of proper packet scheduling algorithms. As a computer revolution, many scheduling algorithms have been pr...

-The 3 Generation WCDMA standard has been enhanced to offer significantly increased performance for packet data. But coming application such as multimedia on desiring data rates will urge the UMTS support. To support such high data rates, High Speed Downlink Packet Access (HSDPA) labeled as 3.5G wireless system, has been published in UMTS Release 5. Under the HSDPA system, it will have to suppo...

Input-queued switches are able to overcome head-of-line (HOL) blocking and achieve high throughput by using virtual output queueing (VOQ) and efficient scheduling algorithms. In this case, the buffers and control logic work at the line speed [2], which enables such architecture to be scaled up to backbone routers with very high speed, as realized in Tiny Tera [3], Cisco GSR [4], Lucent GRF [5],...

Packet networks are currently enabling the integration of traffic with a wide range of characteristics that extend from video traffic with stringent QoS requirements to the best-effort traffic requiring no guarantees. QoS guarantees can be provided in conventional packet networks by the use of proper packet scheduling algorithms. As a computer revolution, many scheduling algorithms have been pr...