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TVWS Coexistence System Architecture Overview

Explore the logical entities and interfaces enabling coexistence on TV White Space networks with deployment examples. Detailed overview of Coexistence Manager, Coexistence Enabler, and Coexistence Database roles.

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TVWS Coexistence System Architecture Overview

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  1. P802.19.1 System Architecture Authors: Date: 16-03-2010 Notice:This document has been prepared to assist IEEE 802.19. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Ruuska (Nokia), Tran (NICT) et al

  2. This contribution proposes P802.19.1 System Architecture It describes logical entities and their interfaces to enable coexistence on TVWS Three deployment examples are described Abstract Ruuska (Nokia), Tran (NICT) et al

  3. Acronyms Used in the Presentation Ruuska (Nokia), Tran (NICT) et al

  4. Logical entities • Coexistence Manager • Coexistence Enabler • Coexistence Database • Interfaces • Interface A • Interface B1 • Interface B2 • Interface B3 • Interface C • Interface D • Interface E • External element • TVWS database • TVBD network or device • Operator management entity (OME) System Architecture 802.19.1 Scope Interface D Coexistence Database TVWS Database Interface B2 Interface C Interface B3 Coexistence Manager Coexistence Manager Operator Management Entity Interface E Interface B1 Coexistence Enabler Interface A TVBD network or device Ruuska (Nokia), Tran (NICT) et al

  5. 802.19.1 logical entity • IEEE 802.19.1 logical entity is defined by its functional role(s) and interfaces with other IEEE 802.19.1 logical entities and with external elements • Three types of logical entities are defined • Coexistence Enabler (CE) • Coexistence Manager (CM) • Coexistence Database (CDB) Logical Entities Ruuska (Nokia), Tran (NICT) et al

  6. Coexistence Enabler (CE) • Functions related to the functional role of the entity • Obtain information, required for coexistence, from TVBD network or device • This includes configuration and control of measurements performed by TVBD network or device • Provide reconfiguration commands and control information, corresponding to coexisting decisions received from CM, to TVBD network or device • Functions related to the interfaces of the entity • Obtain information required for coexistence from TVBD network or device (interface A) • Provide information required for coexistence to CM (interface B1) • information obtained from TVBD network or device • Obtain coexistence commands and control information from CM (interface B1) • Provide reconfiguration commands and control information to TVBD network or device (interface A) • commands and control information corresponding to coexisting commands and control information received from CM Logical Entities Ruuska (Nokia), Tran (NICT) et al

  7. Coexistence manager (CM) • Functions related to the functional role of the entity • Coexistence decision making. • This includes generating and providing corresponding coexistence commands and control information to CE(s) • Discovery of other CMs • To solve coexistence problems between the TVBD networks they serve • Supporting exchange of information required for coexistence among CMs. • Assist network operators in management related to TVWS coexistence. • Functions related to the interfaces of the entity • Provide information required for discovery to CDB, i.e. registration in CDB (interface B2) • Obtain information required for discovery from CDB (interface B2) • Obtain information required for coexistence from CE (information obtained by CE from TVBD network or device) (interface B1) • Provide information facilitating coexistence to CDB (information received from CE(s)) (interface B2) • Obtain information facilitating coexistence from CDB (e.g. information provided to CDB by other CMs) (interface B2) • Obtain information required for coexistence from TVWS DB (information on available TV channels) (interface C1) • Receive network operator spectrum policy from OME (interface E) • Provide coexistence commands and control information to CE (interface B1) • Exchange information and control messages required for coexistence with other CM(s) (interface B3) Logical Entities Ruuska (Nokia), Tran (NICT) et al

  8. Coexistence Database (CDB) • Functions related to the functional role of the entity • Support discovery of CMs by each other • Facilitates opening interface between CMs which need to exchange information due CEs they serve • Contain information facilitating coexistence and provide it to CM • This includes data storage, data processing, etc • Functions related to the interfaces of the entity • Provide information required for discovery to CM (interface B2) • Obtain information required for discovery from CM (registration information) (interface B2) • Obtain information required for coexistence from TVWS DB (information on available TV channels) (interface D) • Obtain information facilitating coexistence from CM (information provided to CM by CE(s)) (interface B2) • Provide information facilitating coexistence to CM (e.g. information provided to CDB by other CMs) (interface B2) Logical Entities Ruuska (Nokia), Tran (NICT) et al

  9. 802.19.1 defines three groups of interfaces • Interface between 802.19.1 entities • Interface B1 • Interface B2 • Interface B3 • Interface between an 802.19.1 entity and TVWS network/devices • Interface A • Interface between 802.19.1 entities and TVWS database or OME • Interface C • Interface D • Interface E • Different interfaces in each group are distinguished by their usage, types of information exchanged, and underlying protocols Interfaces Ruuska (Nokia), Tran (NICT) et al

  10. Interface between 802.19.1 entity and TVBD network or device • A: CE-TVBD network or device • From TVBD network or device to CE • Information required for coexistence • From CE to TVBD network or device • Reconfiguration commands and control information (corresponding to coexistence commands and control information received from CM) • Commands related to control of measurements performed by TVBD network or device Interfaces Ruuska (Nokia), Tran (NICT) et al

  11. Interface between 802.19.1 entities • B1: CE-CM • From CE to CM • Information required for coexistence (information obtained from TVBD network or device) • From CM to CE • Coexistence commands and control information Interfaces Ruuska (Nokia), Tran (NICT) et al

  12. Interface between 802.19.1 entities • B2: CM-CDB • From CM to CDB • Information required for discovery (obtained by this CM) • Information required for coexistence (obtained by this CM) • From CDB to CM • Information required for discovery (obtained by other CMs) • Information required for coexistence (obtained by other CMs) Interfaces Ruuska (Nokia), Tran (NICT) et al

  13. Interface between 802.19.1 entities • B3: CM-CM • Between different CMs • Information and messages required for discovery and coexistence Interfaces Ruuska (Nokia), Tran (NICT) et al

  14. Interface between 802.19.1 entities and TVWS DB or OME • C: CM-TVWS DB • From TVWS DB to CM • Information required for coexistence (information on available TV channels) Interfaces Ruuska (Nokia), Tran (NICT) et al

  15. Interface between 802.19.1 entities and TVWS DB or OME • D: CDB-TVWS DB • From TVWS DB to CDB • Information required for coexistence (information on available TV channels) Interfaces Ruuska (Nokia), Tran (NICT) et al

  16. Interface between 802.19.1 entities and TVWS DB or OME • E: CM-OME • From OME to CM: • Network operator related information e.g. spectrum policy/limitations concerning operator networks. Interfaces Ruuska (Nokia), Tran (NICT) et al

  17. To illustrate the proposed System Architecture, three deployment scenarios are presented • Different TVBD networks operated by one operator • Centralized coexistence approach • Different and independently operated TVBD networks or devices (operated by users or some local operators) • Autonomous coexistence approach • Different and independently operated TVBD networks or devices in large-scale metropolitan area • Distributed coexistence approach • Deployment examples may be added as an appendix in SDD Illustration of System Architecture Ruuska (Nokia), Tran (NICT) et al

  18. Deployment scenario 1 CDB OME CM TVWS DB TVBD CE TVBD CE TVBD network TVBD network Ruuska (Nokia), Tran (NICT) et al

  19. Different TVBD networks operated by one operator: Centralized coexistence approach One CM is managing many CEs (i.e. TVBD networks or devices) CM is placed outside the TVBD devices and network OME provides coexistence policy to CM to assist TVDB devices or networks CDB helps CM in discovering other CM managing TVBD devices/networks in the area Deployment scenario 1 Ruuska (Nokia), Tran (NICT) et al

  20. Deployment scenario 2 TVWS DB CBD TVBD TVBD CM CM CE CE TVBD network TVBD network Ruuska (Nokia), Tran (NICT) et al

  21. Different and independently operated TVBD networks or devices (operated by users or some local operators): Autonomous coexistence approach CM is placed inside the TVBD devices CDB helps CM discovering other CM managing TVBD devices/networks in the area All CMs may not be connected to TVWS BD (e.g. in sensing only device) Deployment scenario 2 Ruuska (Nokia), Tran (NICT) et al

  22. Deployment scenario 3 CM TVWS DB TVBD network cluster CBD TVBD TVBD TVBD TVBD CM CM CM CM CE CE CE CE TVBD network 1 TVBD network 2 Ruuska (Nokia), Tran (NICT) et al

  23. Different and independently operated TVBD networks or devices in large-scale metropolitan area: Distributed coexistence approach • These networks are grouped into clusters where each cluster contains two or more networks • Two coexistence problems exist in this scenario • Coexistence problem between individual networks within each cluster due to the interference caused by adjacent networks (Intra-cluster) • Coexistence problem between clusters due to the aggregated interference of each cluster (inter-cluster) • The embedded CMs for decision making provide coexistence decision towards solving the “intra-cluster” coexistence problem • The central CM provides coexistence decision to solve the “inter-cluster” coexistence problem • Based on the previous decisions central CM provides coexistence guidelines, policies, or commands to embedded CMs Deployment scenario 3 Ruuska (Nokia), Tran (NICT) et al

  24. This contribution proposed high level system architecture for 802.19.1 SDD • It described logical entities and their interfaces to provide coexistence for TVBD networks and devices • The architecture supports various coexistence deployments scenarios • Three illustrative examples were given Summary Ruuska (Nokia), Tran (NICT) et al

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