Latency (engineering)

About: Latency (engineering) is a research topic. Over the lifetime, 3729 publications have been published within this topic receiving 39210 citations. The topic is also known as: lag.

Crossbar switch with communication ring bus

Abstract: A crossbar bus network of nodes is coupled to a crossbar switch circuit that operates as a communications hub routing messages simultaneously to and from the nodes over multiple links. The crossbar switch circuit includes a dedicated communications bus ring adapted to transmit data such as programmed input/output (PIO) messages between components of said crossbar switch circuit. The communications bus ring can be used for secondary high latency data communications thereby freeing switching matrix links of the crossbar switch circuit for simultaneous unimpeaded important low latency data communications to the same device.

Transport protocols for data center networks: a survey of issues, solutions and challenges

Abstract: In recent years, data centers play an important role in academia and industry for supporting various services and applications. Compared with other IP networks, data center networks have some special features such as many-to-one communication pattern with high bandwidth, low latency, auto-scaling, shallow buffered switches and multi-rooted tree topology. Owing to these special features of data center networks, traditional TCP suffers from severe performance degradation. For improving the performance of TCP in data center networks, various solutions have been proposed in recent years. This article presents a comprehensive survey of existing transport layer solutions proposed for mitigating the problems of TCP in data center networks. The objective of this article is threefold: to discuss about the issues of TCP in data center networks; to introduce various transport layer solutions and finally to compare and discuss the challenges of existing solutions proposed for improving the performance of TCP in data center networks.

Real-Time Diagnostics and Their Applications at ASDEX Upgrade

Abstract: For applications of advanced plasma control schemes, many computers that execute complex algorithms need to communicate with low latency so that result data are promptly available for operating ade

Low latency low power bit flipping algorithms for LDPC decoding

Abstract: Low Density Parity Check (LDPC) codes have been adopted in a number of wired and wireless communication standards due to their improved error correcting ability and relatively simple decoder structure. However, for very high throughput systems operating in the multi-Gb/s range conventional decoding methods based on message passing are limited, due largely to the sheer volume of messages being exchanged. Thus, simpler decoding methods have been proposed such as bit flipping permitting efficient and fast hardware implementation. This paper presents two new bit flipping algorithm designed to reduce latency and power consumption. For a small loss in bit error rate performance (0.5 dB) we show how the application of an early stopping criteria uses 89% fewer iterations compared to a similar published algorithm. We also present a method for reducing power consumption by placing processing elements into a quiescent state based on a bit-local metric. Using this technique we show a potential reduction in power consumption of 76%.

A Request-TDMA Multiple-Access Scheme for Wireless Multimedia Networks

Abstract: This paper describes a cellular multiple-access scheme based on TDMA for multimedia communication networks. The scheme proposes an admission control of two different multimedia application stream types: real-time and non-real-time. We do not consider interference between cells. The proposed protocol, that is based on TDMA, exploits the available bandwidth fully. The throughput per mobile station is higher compared to other multiple-access protocols, it offers low latency for both real-time and nonreal-time communication and the unused reserved bandwidth is reallocated for non-real-time communication. Furthermore, the throughput and latency remain stable under high loads.