802 Handoff Measurement Considerations

1. 802 Handoff Measurement Considerations + Richard Paine, Boeing

2. Richard Paine, Boeing

3. SME SME Measurement Policy MeasurementPolicy Channel Switch Decision MREQUEST /MREPORT MREQUEST /MREPORT CHANNEL SWITCH MEASURE MLME MLME Channel Switch Timing Measurement Processing Measurement Frames Measurement Frames MAC Timing PLME TGh layer management model • Extract from 802.11h-D2.1.32, which addresses some measurement extensions for DFS and TPC. Figure 26 – Layer Management Model Richard Paine, Boeing

4. 11h SME PLME MLME Channel Switch Decision Channel Switch Timing MAC Timing CHANNEL SWITCH Measurement Processing MEASURE Measurement Policy Measurement Frames MREQUEST /MREPORT MREQUEST /MREPORT SME MLME Measurement Frames MeasurementPolicy Richard Paine, Boeing

5. WLAN Context Transfer Subnet A 802.11 802.16 R Subnet B 802.11 R 802.11f Context Blob (Certificates, pre-auth, address, etc) 802.11 Context Transfer Packet Richard Paine, Boeing

6. AP Measurements 802.11f Context Blob 802.11h Request For Info or 802.11f Context Blob 10/100BaseT AP1 STA1 AP Table Per STA Table Processor Certs Pre-auth User CIM Schema QoS 802.11f Context Blob Richard Paine, Boeing

7. Card Measurements AP1 STA1 Richard Paine, Boeing

8. RRM Big Picture Application Users of Radio Information Upper Layers Presentation Session Users of Radio Information Transport Users of Radio Information IP Users of Radio Information Interface to Upper Layers MAC Radio Information MAC MAC and PHY Layers PHY Radio Information PHY Richard Paine, Boeing

9. RRM Extension Options • RRM blue stars show the likely location of RRM extensions, though RRM pink stars are (remotely) possible. • RRM Applications are outside the 802.11 specs. SME RRM Applications (outside 802.11) MAC SAP MAC MLME RRM MLME SAP RRM PHY SAP PLME SAP PLCP PLME RRM PLME SAP RRM PMD SAP PMD RRM Richard Paine, Boeing

10. AP1 STA1 RRM MAC/PHY Interchanges Frame Report Report Request Reports NDIS SME MAC SAP MAC MLME 11h Get Linux MLME SAP RPE Histogram Req-Air PHY SAP PLME SAP PLCP PLME PLME SAP Get CCA CCA MGT PMD SAP PMD CCA REQ CCA RCV Mgt Frames Beacon on Setup Richard Paine, Boeing

11. AP1 AP1 AP1 AP1 AP1 AP1 STA1 STA1 STA1 STA1 STA1 STA1 MLME MLME MLME MLME MAC MAC MAC MAC PLCP PLCP PLCP PLCP PLME PLME PLME PLME PMD PMD PMD PMD MAC/PHY Context 802.11f Context Blob 802.11h Request for Information SME SME MLME MAC MLME MAC PLCP PLCP PLME PLME PMD PMD AP STA AP STA 802.11h Request for Information SME SME SME SME STA1 STA2 STA3 STA4 Richard Paine, Boeing

12. RRM Interface Services Reports from the SME Requests to the SME Requests from SME to MLME Requests from MLME to SME Passing Requests and Receiving Responses Across the PLME SAP Passing Requests and Receiving Responses Across the PMD Information to higher layers with SNMP MIBs Information to higher layers outside SNMP MIBs Richard Paine, Boeing

13. Elements of Radio Measurement Base Measurements Per AP Measurements Per STA Measurements Requested Measurements Handoffs to Higher Layers Measurement Policies Measurement Topologies Richard Paine, Boeing

14. Base Measurements 1 RSSI 2 Signal Quality 3 RPI Histogram 4 PSNI 5 DR 6 Loading (requested vs served) 7 Transmit Power 8 Link Margin Richard Paine, Boeing

15. Per AP Measurements Richard Paine, Boeing

16. Per STA Measurements Richard Paine, Boeing

17. Requested Measurements Frame Report Report Request Reports NDIS Linux RPI Histogram Needing Definition: Report Request Frame Report RPI Histogram Reports Linux NDIS SNMP Richard Paine, Boeing

18. Handoffs to Higher Layers Interface to Upper Layers MAC Radio Information MAC MAC and PHY Layers PHY Radio Information PHY Needing Definition: NDIS Objects Linux Objects Wind River Objects Richard Paine, Boeing

19. Measurement Policies Needing Definition: SME Measurement Policies 11h Measurement Policies Richard Paine, Boeing

20. Measurement Topologies 2 1 3 4 5 Needing Definition: Per BSS Topology Per ESS Topology Per Radio View Topology Richard Paine, Boeing

21. Neighbor Definition and Graph • Two APs i and j are neighbors iff • There exists a path of motion between i and j such that it is possible for a mobile STA to perform a reassociation • Captures the ‘potential next AP’ relationship • Distributed data-structure i.e. each AP or AS/RS can maintain a dynamic list of neighbors A B A E C E C B D D 1 Richard Paine, Boeing

22. Post Authentication and 4-handshake Accounting Server RADIUS (AAA) Accounting-Request(Start) A B C D E Richard Paine, Boeing

23. Proactive Key Distribution RADIUS Authentication Server (AS) Accounting Server Notify-Request Notify-Request A B C D E Richard Paine, Boeing

24. Accounting Proactive Key Distribution Authentication AS Access-Request Access-Accept(key material) Access-Accept(key material) Access-Request A B C D E Richard Paine, Boeing

25. RRM Services & Paper Topics • Setup Service - beacon • AP MIB Service - Related Configuration and Statistics • AP Measurements Service Outside the MIB (per AP) • STA Measurements Service Outside the MIB (per STA) • Distribution Service of RRM Information to APs and STAs • AP and STA Statistics Gathering Service • Commanded STA Action Service • STA Autonomous Action Service Richard Paine, Boeing

26. Static Spectrum Management is Limited in Its Ability to Improve Spectrum Utilization Efficiencies Future Allocation & Utilization • Fixed Spectrum Assignments Lead to Inefficient Spectrum Utilization • Opportunities Exist in Time, Frequency, and Geography • RF Spectrum Allocated by Policy • Allocations, Assignments, and Incumbents Vary by Country Heavy Use Heavy Use Sparse Use Medium Use • Observations Show Bands of Local Heavy and Sparse Activity • Temporal Usage Characteristics Vary by Band & Service • Potential for Usage Dependent on Incumbent Service & Equipment Richard Paine, Boeing