There has been much discussion about the best way to combine the benefits of new optical circuit switching technology with the established packet switched Internet. In this paper, we explore how electronic and/or optical circuit switching might be introduced in an evolutionary

This paper analyses and compares the performance of forward planning conflict-free (FPCF), virtual output queuing-partitioned (VOQ-P) and virtual output queuing-shared (VOQ-S) packet switches. The influence of packet burst size, offered switch load and packet switch size are all investigated. Packet loss probability, average packet delay and 99.9% packet delay values are also derived. In compar...

(ARQ) link layer protocols for wireless connections. However, a drawback comes with their use when transferring mixed traffic type, which is the introduction of excessive and highly jittered transmission delay, which negatively affect the performance of both real-time and TCP traffic. Here, we propose a selective ARQ protocol which is capable of switching between ARQ and non-ARQ modes based on ...

| The performance analyses of selective packet dropping policies have usually been performed using homogeneous traac sources and under one node scenarios. In this paper we focus our attention not only to heterogeneous sources but also heterogeneous environments. We present simulation results of application level performance for heterogeneous traac sources under three diierent packet dropping sc...

This document is maintained in order to publish all necessary information needed to develop interoperable applications based on the OP format. It is not a step-by-step cookbook for writing an application, it describes only the format and methods needed to read, check, generate and write conforming packets crossing any network. It does not deal with storing and implementation questions albeit it...

The packet pair technique estimates the capacity of a path (bottleneck bandwidth) from the dispersion (spacing) experienced by two back-to-back packets [1][2][3]. We demonstrate that the dispersion of packet pairs in loaded paths follows a multimodal distribution, and discuss the queueing effects that cause the multiple modes. We show that the path capacity is often not the global mode, and so ...

The Internet's simple best-effort packet-switched architecture lies at the core of its tremendous success and impact. Today, the Internet is firmly a commercial medium involving several competitive service providers and content providers. However, current Internet architecture neither allows (i) users to indicate their value choices at sufficient granularity, nor (ii) providers to manage risks ...

This paper proposes and evaluates two related fast packet switching architectures based on time-division multiplexed integrated photonic fabrics. The architectures are targeted towards low-latency inter-node switching and intra-node routing in high-speed networks. The inter-node switch achieves output packet queueing via asynchronous time-division multiplexing a strictly-nonblocking photonic fa...

We experimentally demonstrate a 160-Gb/s Ethernet 4 packet switch using an 8.6-mm-long silicon nanowire for optical 5 burst switching, based on cross phase modulation in silicon. One 6 of the four packets at the bit rate of 160 Gb/s is switched by an 7 optical control signal using a silicon based 1 × 1 all-optical packet 8 switch. Error free performance (BER < 1E-9) is achieved for the 9 switch...

In this paper, a new bumpless transfer method is introduced based on slow-fast decomposition of the controller. The method is especially well-suited to situations in which the plant model is poor or yet to be identified, as may be the case in adaptive switching control. Simulation results are presented.