1、 ETSI GR mWT 016 V1.1.1 (2017-07) Applications and use cases of Software Defined Networking (SDN) as related to microwave and millimetre wave transmission Disclaimer The present document has been produced and approved by the millimetre Wave Transmission (mWT) ETSI Industry Specification Group (ISG)
2、and represents the views of those members who participated in this ISG. It does not necessarily represent the views of the entire ETSI membership. GROUP REPORT ETSI ETSI GR mWT 016 V1.1.1 (2017-07)2 Reference DGR/MWT-0016 Keywords application, millimetre wave, mWT, SDN, transmission, use case ETSI 6
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7、taff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorizatio
8、n of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. ETSI 2017. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are trademarks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are trademarks of ETSI registered for the benefit
9、of its Members and of the 3GPP Organizational Partners. oneM2M logo is protected for the benefit of its Members GSM and the GSM logo are trademarks registered and owned by the GSM Association. ETSI ETSI GR mWT 016 V1.1.1 (2017-07)3 Contents Intellectual Property Rights 4g3Foreword . 4g3Modal verbs t
10、erminology 4g3Executive summary 4g3Introduction 5g31 Scope 6g32 References 6g32.1 Normative references . 6g32.2 Informative references 6g33 Abbreviations . 7g34 Applications and use cases: overview 8g34.1 Differentiators of MW/mmW technology 8g34.2 Considerations on time scale 9g35 Applications and
11、use cases: description . 10g35.1 Radio link network segment in itself 10g35.1.1 Introduction. 10g35.1.2 Efficient power consumption 10g35.1.3 Dynamic traffic distribution 11g35.1.4 Interference handling 12g35.1.5 OAM of MW/mmW networks 14g35.1.6 Automated frequency allocation . 15g35.2 Radio link ne
12、twork segment and one adjacent network segment . 15g35.2.1 Introduction. 15g35.2.2 Adaptive resource allocation in the RAN based on the transmission network status . 16g35.2.3 Adaptive resource allocation in the transmission network based on RAN traffic patterns . 16g35.2.4 Flow-based shaping 17g35.
13、2.5 Dynamic traffic routing 18g35.2.6 Efficient power consumption 18g35.2.7 Self-backhaul 19g35.2.7.1 Introduction . 19g35.2.7.2 Self-backhaul with mobile access . 20g35.2.7.3 Self-backhaul with fixed wireless access 20g35.2.8 Fixed Broadband - Wireless to the Home (WttH) 22g35.2.9 Fixed Broadband -
14、 Wireless to the Cabinet (WttC) 23g35.3 Radio link network segment in end-to-end view 24g35.3.1 Introduction. 24g35.3.2 Bandwidth on demand 24g35.3.3 Optimal traffic routing 25g35.3.4 Network slicing . 26g35.3.5 End-to-end QoS 28g35.3.6 End-to-end OAM 28g35.3.7 Service chaining 29g35.3.8 VPN handlin
15、g . 30g35.3.9 Synchronization 30g35.3.10 Security . 32g36 Conclusions 33g3Annex A: Authors Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (https:/ipr.etsi.org/
16、). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the pres
17、ent document. Trademarks The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners. ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no right to use or reproduce any trademark and/
18、or tradename. Mention of those trademarks in the present document does not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Group Report (GR) has been produced by ETSI Industry Specification Group (ISG) millimetre Wave Transmiss
19、ion (mWT). Modal verbs terminology In the present document “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allo
20、wed in ETSI deliverables except when used in direct citation. Executive summary The present document presents and analyses some use cases for Software Defined Networking (SDN) focusing on the application of microwave (MW) and millimetre wave (mmW) transmission. In particular millimetre wave technolo
21、gies are considered a basic enabler for the future of telecommunication networks, for both access (5G mobile) and fronthaul/backhaul. Fundamental aspects of those future networks are performance, flexibility and adaptivity far beyond what is possible today, with technologies like SDN and Network Fun
22、ctions Virtualization (NFV) providing the prerequisite capabilities. The need for future mmW radio to coordinate with other transport and access technologies requires that the mmW ecosystem at least understand the scenarios and use cases in which the equipment will be integrated. The goal of the pre
23、sent document is to provide an overview of applications and use cases that, leveraging on the SDN paradigm, are able to add value in terms of functionality, efficiency and/or cost when using microwave/millimetre wave network segments. The peculiar characteristics of MW and mmW radio networks are to
24、be taken into account in order to define the specific use cases and value propositions, which are both pertinent and compelling. In perspective, an SDN network where a centralized intelligence can make the most of the huge amount of data coming from the current and past status of the entire network
25、and its applications, will allow for innovative, dynamic and highly efficient services and operation, to levels not seen before. ETSI ETSI GR mWT 016 V1.1.1 (2017-07)5 Not secondary in this perspective is the promise of SDN to cross over equipment technology, network segment and vendor boundaries. I
26、t is not in the scope of the present document to enter in any way into discussions about controller architectures, protocols, information models and implementation details since other specific Standard Defining Organizations (SDOs) are already in charge of these important issues. In fact the present
27、 document is to be seen as complementary to the work done in other SDOs. Introduction The current architecture of telecom and data networks is based on the IP protocol stack, where the routing philosophy is made of distributed control and hop by hop decisions over single data packets. This approach
28、is beginning to show some limits in terms of performance, flexibility and scalability due to the exponential growth of data traffic that has been experienced for some years, in particular with the explosion of the quantity and quality of applications and terminals that require to be connected. The r
29、equirements on the different traffic types range from high throughput to low latency, from high user density to high availability, from low power consumption to high reliability. The fulfilment of such a wide variety of requirements asks for a quite different network architecture, where adaptivity i
30、s fundamental. In order to answer to this necessity several approaches have been proposed in the recent years, having in common the focus on the programmability offered by software: Cloud networking Network Functions Virtualization (NFV) Software Defined Networking (SDN) In particular Software Defin
31、ed Networking is an approach to networking based on the following principles: The separation of the data plane from the control plane The logical centralization of the control function The routing philosophy introduced by SDN is based on centralized control able to perform end-to-end decisions over
32、data flows. The main concept is to have network elements with just forwarding functions, with on top a central controller which is able, on one side, to expose an abstracted view of the network resources to the applications and, on the other side, to allow an automated implementation of services ind
33、ependent from the physical details of the network. As such this architecture is structured on three basic layers: Data plane, made of the different network elements (NEs) Control plane, which is the central controller Application plane, made of the different applications The interface between contro
34、l plane and data plane (SouthBound Interface, SBI) has the goal to allow for standard protocols to be implemented, two examples being OpenFlow and Netconf; in this way the goal would be to have a controller which is able to interact with NEs independently from the vendor specificity. The interface b
35、etween the application plane and control plane (NorthBound Interface, NBI) has the goal to allow Application Programming Interfaces (APIs) to be established so that applications can be developed independently from the particular physical network. The specific SDN architecture is the object of severa
36、l SDOs and is out of the scope of the present document. The focus of this work is to analyse and define use cases and applications in the domain of microwave (MW) and millimetre wave (mmW) transmission in which the SDN paradigm can be effectively applied. ETSI ETSI GR mWT 016 V1.1.1 (2017-07)6 1 Sco
37、pe The purpose of the present document is to provide information on the applications and use cases of the SDN paradigm as related to MW and mmW transmission. The analysis covers the following progressively widening ranges: 1) The radio link network segment in itself. 2) The interactions of the radio
38、 link network segment with an adjacent segment. 3) The radio link network segment as a part of an end-to-end connection. Even if going towards a wider network range the relevance of the MW/mmW segment may become less evident, nevertheless the relevance of SDN is at its highest level when considering
39、 end-to-end scope, where the MW/mmW segment is just a part of the whole picture but anyway requested to be able to adapt to the SDN requirements in order for services to be efficiently and effectively provisioned. The classification of applications and use cases in the three aforementioned broad cat
40、egories reflects a natural layering in terms of scope width, increasing complexity and increasing value, in terms of cost reduction, enabler for new revenue streams and enabler of innovations not yet thought of. It has to be noted that several use cases described in a given network range (and clause
41、) become part of the use cases described in the wider network range (and following clause) in a sort of recursive and auto-similar behaviour; it is anyway useful to keep the use case in all the relevant clauses in order to highlight the significant increase in value and decrease in cost that is achi
42、eved by extending the use case from segment towards end-to-end scope. 2 References 2.1 Normative references Normative references are not applicable in the present document. 2.2 Informative references References are either specific (identified by date of publication and/or edition number or version n
43、umber) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guaran
44、tee their long term validity. The following referenced documents are not necessary for the application of the present document but they assist the user with regard to a particular subject area. i.1 Open Networking Foundation: “Wireless Transport SDN Proof of Concept White Paper“. NOTE: Available at
45、https:/www.opennetworking.org/images/stories/downloads/sdn-resources/white-papers/ONF_Microwave_SDN_PoC_White_Paper%20v1.0.pdf. i.2 Open Networking Foundation: “Wireless Transport SDN Proof of Concept 2 Detailed Report“. NOTE: Available at https:/www.opennetworking.org/images/stories/downloads/sdn-r
46、esources/technical-reports/Wireless_Transport_SDN_PoC_White_Paper.pdf. i.3 Open Networking Foundation: “Third Wireless Transport SDN Proof of Concept White Paper“. NOTE: Available at https:/www.opennetworking.org/images/stories/downloads/sdn-resources/technical-reports/Third-Wireless-Transport-SDN-P
47、roof-of-Concept-White-Paper.pdf. ETSI ETSI GR mWT 016 V1.1.1 (2017-07)7 i.4 NGMN Alliance: “NGMN 5G white paper“. NOTE: Available at http:/www.ngmn.org/uploads/media/NGMN_5G_White_Paper_V1_0_01.pdf. i.5 SDN World Congress 2016: “Enabling 5G network slicing with programmable microwave transport“. NOT
48、E: Available at http:/ i.6 IEEE: “SDN-based architecture to support Synchronization in a 5G framework“. NOTE: Available at http:/ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=7579504. i.7 “Securing the Cloud with SDN“. NOTE: Available at https:/ i.8 Recommendation ITU-T G.8275.1: “Precision time prot
49、ocol telecom profile for phase/time synchronization with full timing support from the network“. i.9 Recommendation ITU-T G.8261: “Timing and synchronization aspects in packet networks“. i.10 Recommendation ITU-T G.8262: “Timing characteristics of a synchronous Ethernet equipment slave clock“. i.11 Recommendation ITU-T G.8264: “Distribution of timing information through packet networks“. i.12 Recommendation ITU-T G.8272: “Timing ch
