Packet queuing and scheduling, two of the critical components in an input-queued packet switch, have been extensively studied in the context of either pure unicast traffic or pure multicast traffic. Unfortunately, the results from a study in one context are not applicable to the other context. The design of integrated scheduling for both types of traffic remains an open issue. This paper deals ...

Most large-scale peer-to-peer (P2P) live streaming systems use mesh to organize peers and leverage pull scheduling to transmit packets for providing robustness in dynamic environment. The pull scheduling brings large packet delay. Network coding makes the push scheduling feasible in mesh P2P live streaming and improves the efficiency. However, it may also introduce some extra delays and coding ...

With rapid advances in wireless communications, multipleinput multiple-output (MIMO) antennas technology has been integrated into next-generation wireless communication standards. In this paper, we introduce a MIMO system model, propose a multichannel radio link control protocol and a dynamic channel scheduling policy. We then conduct a performance study on the multichannel link control protoco...

This paper studies the packet scheduling problem in Broadband Wireless Access (BWA) networks. The key difficulties of the BWA scheduling problem lie in the high variability of wireless channel capacity and the unknown model of packet arrival process. It is difficult for traditional heuristic scheduling algorithms to handle the situation and guarantee satisfying performance in BWA networks. In t...

There is a broad spectrum of packet data networks emerging onto the networking scene. The emergence of broad spectrum networks has also seen a growing number of applications involving multimedia communications. This growth in multimedia applications is a driving force towards providing a better Quality of Service (QoS) to users. A major component in providing QoS is the packet scheduler. In thi...

In active networks, much processing power is required for the execution of packet processing code that is carried in or referenced by active packets. In high-bandwidth environments the processor performing this active processing poses a bottleneck. We present a processor scheduling algorithm called Feedback De cit Round Robin (FDRR) that reduces the overhead for fair scheduling and context swit...

In this paper, we address the design of multi-hop packet transmissions for the All-to-All Broadcast (AAB) problem in a Wavelength Division Multiplexing (WDM) optical star network with N nodes. The tunable transmitter on each node needs a nonnegligible tuning latency δ to switch between wavelengths. To decrease the affection of the packet delay in multi-hop scheduling, the maximum of hop distanc...

We present a distributed packet scheduling scheme for pushbased Peer-to-Peer (P2P) video streaming with Network Coding (NC) over unstructured random overlays. While previous research has shown the potentials of random-push NC for P2P, little attention has been given to the problem of scheduling the packet transmissions at the network nodes. The proposed scheduling scheme exploits the knowledge ...

Packet scheduling is key to quality of service (QoS) capabilities of broadband wired and wireless networks. In a heterogeneous traffic environment, a comprehensive QoS packet scheduler must strike a balance between flow fairness and access delay. Many advanced packet scheduling solutions have targeted fair bandwidth allocation while protecting delay-constrained traffic by adding priority queue(...

Various services are transmitted in the power communication networks, which require differentiated QoS guarantee. Packet transport network (PTN) technology can meet the requirements. In this paper, QoS mechanisms of PTN are investigated and different QoS deployment strategies are proposed. To verify performance, DiffServ module of network simulator (NS-2) is employed. Simulations check the infl...