Wolter, Katinka, Reinecke, Philipp ORCID: https://orcid.org/0000-0002-2411-0891 and Mittermaier, Alfons 2011. Model-based evaluation and improvement of PTP syntonisation accuracy in packet-switched backhaul networks for mobile applications. Presented at: EPEW 2011: 8th European Performance Engineering Workshop, Borrowdale, UK, 12-13 October 2011. Published in: Thomas, Nigel ed. Computer Performance Engineering: 8th European Performance Engineering Workshop, EPEW 2011, Borrowdale, UK, October 12-13, 2011. Proceedings. Lecture notes in computer science. Lecture Notes in Computer Science , vol.6977 Springer, 219 - 234. 10.1007/978-3-642-24749-1_17 |
Abstract
Base stations in mobile networks have very strict frequency synchronisation (also referred to as syntonisation) requirements. As backhaul networks are migrated to asynchronous packet-switching technology, timing over packet using the IEEE 1588 Precision Time Protocol (PTP) replaces current synchronisation methods that rely on the synchronous bit clock of the network. With PTP, base-station clocks derive their frequency from the inter-packet delays of Sync messages sent by a high-quality time source at regular time intervals. Packet-delay variation (PDV) thus has a major impact on the achievable synchronisation quality, and the amount of PDV of a backhaul network determines whether the network can support frequency synchronisation of base stations. We present a simulation and an analytical approach to assessing the suitability of backhaul networks for clock synchronisation using PTP and derive two methods for reducing PDV.
Item Type: | Conference or Workshop Item (Paper) |
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Date Type: | Publication |
Status: | Published |
Schools: | Computer Science & Informatics |
Publisher: | Springer |
ISBN: | 9783642247484 |
ISSN: | 1611-3349 |
Last Modified: | 26 Oct 2022 07:13 |
URI: | https://orca.cardiff.ac.uk/id/eprint/124316 |
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