International telecommunication union
Appendix III End-to-end QoS
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Appendix IIIEnd-to-end QoSEditor’s Note: Appendix III was produced during the FG-IMT 2020 focus group in order to investigate gaps in standardization related to IMT-2020. While the request from SG-13 was to deliver a report outlining standardization gaps, the consensus of the focus group was that the working documents produced and used during the focus group work contained useful information for future work and should be captured. Note, however, the focus group concentrated on producing accurate descriptions of the standardization gaps in the main body of this document; some minor errors may exist in the appendices. They are, however, the output of the focus group but are provided for information only. Editor’s Note: This appendix uses clause references in a form usually associated for normative text. This is maintained for this report to align with references made in the main body of this report. This baseline document for a QoS framework for IMT-2020 is revised on related input documents, as well as discussions, feedback and suggestions received at the break-out session on QoS on the last Torino meeting. The revision is as follows:
====================== QoS framework for IMT-2020 Summary This deliverable:
Editor’s Note: Depending on the developed contents of work items in the focus group (e.g., High-level Architecture, Network Softwarization and Use Case), this document may need to be revised. Keywords IMT-2020, Fixed Network, Wireless Network, Network Performance, Quality of Service, Quality of Experience, QoS parameters, QoS classes
This document introduces the high-level end-to-end QoS/QoE requirements of IMT-2020. Basic terminologies and concepts are defined and attributes are developed independent of the underlying technology. With a view to facilitating future enhancements, the main body of the document describes the topic in general. It is noted that the descriptions of QoS in the document are designed to identify the customer’s QoS/QoE requirements for various use cases and applications in IMT-2020, and the QoS requirements for service providers to offer could be derived accordingly. Consequently, future studies will be able to determine network technologies and architectures that can efficiently achieve the desired QoS/QoE requirements in IMT-2020. The objective of this document is to describe the following:
The following ITU-T Recommendations and other references contain provisions which through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. [ITU-T Y.1540] Recommendation (2011) - Internet protocol data communication service - IP packet transfer and availability performance parameter - http://www.itu.int/rec/T-REC-Y.1540-201103-I/en; [ITU-T Y.1541] Recommendation (2011) - Network performance objectives for IP-based services - http://www.itu.int/rec/T-REC-Y.1541-201112-I/en; [ITU-T Y.1542] Recommendation (2010) - Framework for achieving end-to-end IP performance objectives - http://www.itu.int/rec/T-REC-Y.1542-201006-I/en; [ITU-T G.1000] Recommendation (2001) - Communications Quality of Service: A framework and definitions - http://www.itu.int/rec/T-REC-G.1000-200111-I/en [ITU-T G.1010] Recommendation (2001) - End-user multimedia QoS categories - http://www.itu.int/rec/T-REC-G.1010-200111-I/en; [3GPP TS 23.107] Technical Specification (2014) - Quality of Service (QoS) concept and architecture - http://www.3gpp.org/ftp/specs/archive/23_series/23.107/ [3GPP TS 23.401] Technical Specification (2015) - General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access - http://www.3gpp.org/ftp/specs/archive/23_series/23.401/
For further study
This deliverables defines the following abbreviations: GBR Guaranteed Bit Rate GW Gateway IMT International Mobile Telecommunications IP Internet Protocol IPDV IP packet Delay Variation IPER IP packet Error Rate IPLR IP packet Error Ratio MBR Maximum guaranteed Bit Rate NP Network Performance O&M Operation and Maintenance QCI QoS Class Identifier QoE Quality of Experience QoS Quality of Service
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