1 / 7

G.8265.1 (PTPprofileFrequency)

Overview of Q13 recommendations. G.8260 (Definition). Definitions / terminology. Agreed. Ongoing. G.8260 AppI ( metrics ). Frequency: G.826x. Time/Phase:G.827x. G.8261. G.8271. Basics. SyncE Jitter-Wander: ( Included in G.8261). G.8271.1 (Network limits_time/phase.

ita
Download Presentation

G.8265.1 (PTPprofileFrequency)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Overview of Q13 recommendations G.8260 (Definition) Definitions /terminology Agreed Ongoing G.8260 AppI (metrics) Frequency: G.826x Time/Phase:G.827x G.8261 G.8271 Basics SyncE Jitter-Wander: (Included in G.8261) G.8271.1(Network limits_time/phase Network requirements G.8261.1(NetwkPDV_frequency) G.8271.2(profile2) 73.1 GM G.8262 (SyncE) G.8272PRTC 73.2 BC Clock G.8273 G.8263 (slave clock) 73.3 TC 73. x,y,z G.8264(SyncE-architecture-SSM) Methods G.8275(architecture-time) G.8265(architecture-Frequency) G.8265.1(PTPprofileFrequency) G.8275.1(PTPprofile1Time/phase) Profiles G.8275.2(PTPprofile2Time/phase ) G.8265.m(PTP Profile frequency m) 1 G.supp

  2. Summary of the Synchronization sessions -1 • IEEE 1588 Revision • Fix existing problems, remove inconsistancies • Improve accuracy, security, configuration and MIBs • Layered architecture, but backwards compatible • Backward compatibility is very important for operators • IEEE 802.1AS Revision • Additional link types, link aggregation • Redundancy and faster reconfiguration • Architectural convergence with 1588

  3. Summary of the Synchronization sessions -2 3 • IEEE Issue One stepclock • One-step clockimplies the implementation of hardware thatgreatlyreduces the processor requirements for synch and delayprocessing • Backwards compatibility a requirement • IEEE 1588 simulations for G.827x & 802.1AS • The proposed G.827x and 802.1AS profiles willmeettheir goals • Partial support still to beperformed in ITU

  4. Summary of the Synchronization sessions -3 • Network limits-Asymmetry Asymmetry remains one of the main issues in the transport of time. Partial support might add new sources of asymmetry • Synchronization network architecture • Key aspects of NGN synchronization • Packet network infrastructure • New synchronization requirements • New methods • New clock structures • Architecture helps see how all pieces fit together

  5. Summary of the Synchronization sessions - 4 • 802.1Q Stream reservation protocol • deterministic operation requires that resources are available • based on 802.1Q Multiple Registration Protocol • talkers advertise the streams that they can source • Important side-effect sets up a reservation « domain » • listeners register for streams • New work under way • static reservations, faster startup, big reduction in packet traffic, support for new shapers, more management

  6. Summary of the Synchronization sessions - 5 • 802.1Qbv scheduled traffic • Scheduling stream transmission can greatly reduce delays through switches • Cut-through makes sense • Management of schedule is not a plug-and-play operation, it will require intelligence

  7. Summary of the Synchronization sessions -6 • G.8275.x profiles • G.8275.x time PTP telecom profiles are designed to support the needs of current and future mobile technologies • G.8275.1 (full timing suport) will be finalized soon, G.8275.2 (partial timing support) is just starting

More Related