1、 ETSI TR 103 494 V1.1.1 (2018-01) Broadband Radio Access Networks (BRAN); Study of central coordination of WAS/RLANs operating in the 5 GHz frequency band TECHNICAL REPORT ETSI ETSI TR 103 494 V1.1.1 (2018-01) 2Reference DTR/BRAN-60022 Keywords broadband, control, protocol ETSI 650 Route des Luciole
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7、ight and the foregoing restriction extend to reproduction in all media. ETSI 2018. 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 of its Members and o
8、f 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 TR 103 494 V1.1.1 (2018-01) 3Contents Intellectual Property Rights 5g3Foreword . 5g3Modal verbs terminology 5g3Intro
9、duction 5g31 Scope 6g32 References 6g32.1 Normative references . 6g32.2 Informative references 6g33 Definitions, symbols and abbreviations . 7g33.1 Definitions 7g33.2 Symbols 9g33.3 Abbreviations . 10g34 Use cases of central control/coordination of WAS/RLAN in 5 GHz bands. 11g34.1 Use case 1: Coexis
10、tence management between coordinated and uncoordinated WAS/RLANs 11g34.2 Use case 2: Coexistence management between coordinated and uncoordinated WAS/RLANs managed by a single network operator 12g34.3 Use case 3: Coexistence management between similar/dissimilar WAS/RLANs managed by multiple network
11、 operators . 12g35 Possible requirements . 13g35.1 Requirements for application to WAS/RLAN in 5 GHz bands 13g35.2 Other possible requirements . 13g36 Study on central control/coordination concepts . 14g36.1 Introduction 14g36.2 Hierarchical Control Concepts . 14g36.2.1 Hierarchical Control concepts
12、 in COHERENT 14g36.2.2 Possible enhancements to Hierarchical Control concepts . 15g36.2.2.1 General principles . 15g36.3 Abstractions 16g36.3.1 Abstraction concepts in COHERENT. 16g36.3.1.1 Introduction . 16g36.3.1.2 Conceptual overview . 17g36.3.1.3 Examples of abstractions and network graphs 17g36
13、.3.1.3.1 Introduction . 17g36.3.1.3.2 Nodes . 18g36.3.1.3.3 Edges . 19g36.3.1.3.4 Abstracted network graph 19g36.3.1.3.5 Overview of abstraction procedure 19g36.3.2 Possible enhancements to Abstraction concepts . 20g36.3.2.1 Examples of weighted digraph 20g36.3.2.1.1 Introduction . 20g36.3.2.1.2 Dir
14、ected edge or arc . 20g36.3.2.1.3 Weight . 21g36.3.2.1.4 Path and directed path . 21g36.4 Network Slicing and Slice-Specific Network View . 22g36.4.1 Network Slicing and Slice-Specific Network View in COHERENT . 22g36.4.2 Possible enhancements to Network Slicing and Slice-Specific Network View 23g36
15、.4.2.1 Network slice resource management using Slice-Specific Network View . 23g37 System architecture 24g37.1 COHERENT architecture and functionalities 24g37.1.1 Overview of the COHERENT architecture 24g37.1.2 Control and Coordination plane 25g3ETSI ETSI TR 103 494 V1.1.1 (2018-01) 47.1.2.1 C3 and
16、RTC 25g37.1.2.2 System Functionalities of RTCs and C3 . 26g37.1.2.2.1 C3 Functionalities 26g37.1.2.2.2 RTC Functionalities. 26g37.1.2.2.3 Southbound API Functionalities 26g37.2 Possible enhancements to architecture and functionalities . 26g37.2.1 System description 26g37.2.2 Possible procedures in t
17、he enhanced architecture . 28g37.3 Architecture for heterogeneous wireless access technologies 28g38 Measurements and reports 29g38.1 Measurements and reports in IEEE 802.11 standard 29g38.1.1 Radio measurements . 29g38.1.1.1 Introduction . 29g38.1.1.2 Radio measurement procedures 30g38.1.2 Wireless
18、 Network Management (WNM) 31g38.1.2.1 Introduction . 31g38.1.2.2 WNM procedures 31g38.1.3 Management procedures . 31g38.1.3.1 Overview of IEEE 802.11 management approach 31g38.2 MLME SAP interface . 32g38.2.1 Introduction. 32g38.2.2 Relevant procedures 32g38.3 Measurements in 3GPP LTE standards 33g3
19、8.4 Possible new reports . 33g38.4.1 IEs for general reporting . 33g38.4.2 Reports for supporting QoS enforcement per flow or per radio bearer . 34g39 Control/Coordination messages . 35g39.1 Registration to C3 and initial operation 35g39.2 Operational performance 36g39.3 Interference coupling 36g39.
20、4 Dependency on the traffic type . 36g39.5 C3 actions for QoS enforcement 37g39.5.1 Introduction. 37g39.5.2 Virtual LBT 37g39.5.3 Carrier aggregation and LBT thresholds . 37g39.5.4 MCS selection . 38g310 Void 38g311 Examples of algorithms 38g311.1 Algorithm for low complexity spectrum reassignment 3
21、8g311.1.1 Introduction. 38g311.1.2 Channel reassignment based on channel transition graph . 38g311.2 Algorithm for channel assignment based on graph information . 40g311.2.1 Introduction. 40g311.2.2 Channel assignment using graph representation of interference relationship among nodes and their expe
22、cted QoS 40g311.3 Algorithm for channel assignment considering interference aggregation effect at reference points 42g311.3.1 Introduction. 42g311.3.2 Interference aggregation effect coefficient . 42g311.4 Algorithm for the selection of candidate serving C3 instances for moving nodes . 43g311.4.1 In
23、troduction. 43g311.4.2 Selection of candidate serving C3 instances for moving nodes 44g311.5 Algorithm for network coordination based on spectrum utilization pattern . 45g311.5.1 Introduction. 45g311.5.2 Spectrum utilization pattern 45g311.5.3 Channel ranking methodology based on spectrum utilizatio
24、n pattern 47g3Annex A: Change History . 49g3History 50 ETSI ETSI TR 103 494 V1.1.1 (2018-01) 5Intellectual Property Rights Essential patents IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is
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28、o use or reproduce any trademark and/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 Technical Report (TR) has been produced by ETSI Technical Committee
29、 Broadband Radio Access Networks (BRAN). 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). “mus
30、t“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. Introduction Developing technologies for 5G Broadband Systems is one of the objectives of the European Commission. The EC H2020 project COHERENT i.14, “Coordinated Control and Spectrum Management for 5G Heter
31、ogeneous Radio Access Networks“ has addressed topics related to the application of the basic principles of wired Software - Defined Networks (SDN) to wireless networks. The present document includes the main outcome of the project and the results of additional studies. The present document does not
32、address any regulatory issues and does not address mandatory requirements such as those related to article 3.2 of Directive 2014/53/EU i.13. Some results incorporated in the present document received funding from the European Unions Horizon 2020 research and innovation programme under grant agreemen
33、t No 671639. ETSI ETSI TR 103 494 V1.1.1 (2018-01) 61 Scope The present document contains studies of the architectures and the protocols supporting the central coordination of WAS including RLANs (WAS/RLAN) operating in the 5 GHz bandIt also includes information provided by a radio node/network of r
34、adio nodes and the procedures for the coordination of the operation of these nodes. 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 numbe
35、r or version number) 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
36、cannot guarantee 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 Alexandros Kostopoulos, George Agapiou, Deng Junquan, Dorin Panaitopol, Fang-Chun Kuo (Ed
37、itor-in-Chief), Kostas Katsalis, Navid Nikaein, Mariana Goldhamer, Tao Chen, Rebecca Steinert, Roberto Riggio: “System Architecture and Abstractions for Mobile Networks“, EU H2020 5G-PPP COHERENT Project Deliverable D2.2, July 2016. NOTE: Available online at http:/www.ict-coherent.eu/. i.2 Nguyen et
38、 al.: “SDN and virtualisation-based LTE mobile network architectures: A comprehensive survey“, Wireless Personal Communications, vol. 86, no. 3, pp. 1401-1438, 2016. i.3 F. Ahmed et al.: “Distributed Graph Coloring for Self-Organization in LTE Networks“, Journal of Electrical and Computer Engineerin
39、g, 2010. i.4 P. Cardieri: “Modeling interference in wireless ad hoc networks“, IEEE Communication Surveys Physical layer procedures (Release 14)“. i.10 ETSI TS 136 331 (V14.3.0): “LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol specification (3GPP TS
40、36.331 version 14.3.0 Release 14)“. i.11 ETSI TS 136 214 (V14.2.0): “LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer; Measurements (3GPP TS 36.214 version 14.2.0 Release 14)“. i.12 3GPP TS 36.423 (V14.0.0) (2016-09): “Evolved Universal Terrestrial Radio Access Network (E-UTR
41、AN); X2 application protocol (X2AP) (Release 14)“. i.13 Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC Text w
42、ith EEA relevance. i.14 ICT-COHERENT. NOTE: Available at http:/www.ict-coherent.eu/. 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: arc: in digraph, an ordered pair of vertices is called a directed edge or
43、 an arc Central Controller and Coordinator (C3): C3 is a logically centralized entity in charge of network-wide control and coordination among entities in WAS/RLAN based on Centralized Network View (CNV) NOTE: C3 could be implemented with physical control instances sharing network information with e
44、ach other. channel assignment: process which determines one or more frequency blocks (channels) for radio nodes NOTE: Coexistence decision can be made when determining the channel(s) for radio nodes. Control Plane Function: function which controls the operation of the system through appropriate mess
45、ages Control Vertex: vertex in a (di)graph which represents a C3 instance digraph: graph which consists of a set of vertices connected by edges, where the edges have a direction associated with them directed path: digraph, a directed path is a sequence of arcs which connect a sequence of vertices, w
46、ith the restriction that all arcs in the path are directed in the same direction dissimilar WAS/RLANs: dissimilar WAS/RLANs are WAS/RLANs that use different RATs without the same/common wireless network coexistence technologies graph: set of vertices connected by edges head: arc (vi,vj) is considere
47、d to be directed from vertex vito vertex vj, vjis called the head of the arc hierarchical control: control architecture based on a central controller which coordinates the operation of other controllers network slice instance: run-time instantiation of a Network Slice ETSI ETSI TR 103 494 V1.1.1 (20
48、18-01) 8network slice or service slice: network slice/service slice is a logical network that comprises a set of network functions and the corresponding resources required to provide End-to-End support for specific network services, network applications and radio configurations of WAS/RLAN NOTE: The
49、 network services may be specific to some particular use cases or business applications. A network slice can span all domains of the network: software programs running on cloud nodes, specific configurations of the transport network, a dedicated radio access configuration, as well as settings of the WAS/RLAN devices. Different network slices contain different network applications and configuration settings. Network View (NV): database containing information specific to the network operation NOTE: A Local NV includes parameters available at a local radi
