�1���� Scope����������
�2���� References
�3���� Definitions
������� 3.1���� Terms defined elsewhere�������
������� 3.2���� Terms defined in this Recommendation�����������
�4���� Abbreviations and acronyms�������������
�5���� Conventions������������
�6���� Network reference model��
�7���� Network limits���������
������� 7.1���� Network limits at reference point A����
������� 7.2���� Network limits at reference point B����
������� 7.3���� Network limits at reference point C����
������� 7.4���� Network limit at reference point D�����
������� 7.5���� Network limits for accurate time transfer with a PRTC deployed
in the access network
�8���� High-accuracy time transfer��������������
������� 8.1���� Introduction�
������� 8.2���� Performance requirements���
Appendix I � Clock models for noise accumulation simulations����
������� I.1���� T-BC models for noise accumulation simulations������������
������� I.2���� End-to-end TC models for noise accumulation simulations���������
Appendix II � Hypothetical reference models used to derive the network
limits����
������ II.1� ���HRM composed of T-BCs����������
������ II.2���� HRM composed of T-BCs and T-TCs������
Appendix III � Network limits considerations����
����� III.1���� Measurement of network limits in deployment case 1�
Appendix IV � Constant and dynamic time error and error accumulation����
������ IV.1���� Introduction�
������ IV.2���� Components of time error������
������ IV.3���� Accumulation of time error in a chain of clocks�������������
Appendix V � Example of design options����
������� V.1���� Network limits�������������
������� V.2���� Components of time error budgets����
������� V.3���� Failure scenarios��������
������� V.4���� Time error budget allocation�
������� V.5���� Operator options�������
������� V.6���� Further details�������������
Appendix VI � Mitigation of time error due to synchronous Ethernet transients����
Appendix VII � Maximum relative time error����
Appendix VIII � Models for budgeting in a chain of microwave devices����
Appendix IX � Models for budgeting in a chain of xPON or xDSL devices����
Appendix X � Time error and transients due to PTP rearrangement����
Appendix XI � Measurement of maximum relative time error limits����
������ XI.1���� Measurement of maximum relative time error limits��
������ XI.2���� Estimation of maximum absolute relative time error���
Appendix XII � Examples of design options for fronthaul and clusters of base
stations����
����� XII.1���� Requirements�������������
����� XII.2���� Fronthaul architectures for packet-based time/phase
distribution��������
����� XII.3���� Failure scenarios��������
����� XII.4���� Synchronization options����������
����� XII.5���� Relative time error budget allocation�
����� XII.6���� Network design guidelines and measurement of the network limits�����
Appendix XIII � High-accuracy time transfer����
���� XIII.1���� Use-cases�����
���� XIII.2���� Optical components and calibration���
� ���XIII.3���� External interfaces at HA-TT-Source and HA-TT-Sink:��
���� XIII.4���� Reference chain:��������
Bibliography����