Fast packet switching

About: Fast packet switching is a research topic. Over the lifetime, 5641 publications have been published within this topic receiving 111603 citations.

Packet detection system, packet detection device, and method for receiving packets

Abstract: A packet detector for a multi-band orthogonal frequency division multiplexing system includes a plurality of packet detection units each corresponding to a time frequency code for detecting packets according to a spreading sequence of the time frequency code, a comparison unit for comparing correlation values provided by division units of the plurality of packet detection units, and a packet decision module for determining a time frequency code and size of a fast Fourier transform sampling window according to output signals of the comparison unit, allowing a frequency band to be selected and synchronization to be executed.

Mobile radio communication packet data network

Abstract: A packet data network for providing a radio packet data service in a mobile radio communication system. The packet data network includes a plurality of radio network controllers (RNCs) for controlling a radio channel allocation to a mobile station and for controlling, matching the network, a path of a packet data service or a circuit data service; a plurality of packet data gateway nodes (PDGNs) for performing management of a mobility of the mobile station and a routing function of packet data for information management; a mobile switching center (MSC) for registering and managing terminal node identifiers of the RNCs and the PDGNs connected to the mobile switching center, and for managing and giving to the PDGNs network identification addresses which a user can directly call; and a packet router for providing a packet data transmission path by routing a packet data between the RNC and PDGN, if a mobile station requests the packet data service. If the mobile station requests the packet data service, a packet router is provided a packet transmission path in association with the RNCs, PDGNs, and MSC or another MSC.

On the Throughput and Optimal Packet Length of an Uncoded ARQ System over Slow Rayleigh Fading Channels

Abstract: This letter presents a simplified expression for the average packet error rate (PER) for an uncoded packet transmission system with large packet length over slow Rayleigh fading channels, by assuming that the bit error rate (BER) has an exponential form. Then the throughput performance of an uncoded packet transmission system with automatic repeat request (ARQ) is investigated, and the optimal packet length is derived to maximize the throughput. The theoretical analysis is validated by simulations.

Simulation and Analysis of Packet Loss in User Datagram Protocol Transfers

Abstract: Understanding packet loss patterns in Internet Protocol (IP) networks is important for achieving the desired quality of service in multimedia transfers. In this paper, we study the loss patterns in video transfers using User Datagram Protocol (UDP) in a congested packet network. We use trace-driven ns-2 simulations to collect packet loss traces in networks, and we apply wavelet analysis to investigate the behavior of packet loss on various time-scales. We show that time-scales are essential for understanding loss behavior and that packet loss exhibits long-range dependence over the coarser time-scales.