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Doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 1 + Radio Resource Measurement 802.11k and its Specification.

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Presentation on theme: "Doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 1 + Radio Resource Measurement 802.11k and its Specification."— Presentation transcript:

1 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 1 + Radio Resource Measurement 802.11k and its Specification

2 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 2 Agenda - Why Radio Resource Measurement now? - 802.11 Existing Measurement Approach - Proposed 11k Approach - Requirements - Issues - Futures - Conclusions

3 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 3 Military Communications Needs Connectivity WIN-T Munitions Robotics Sensors Tactical WIN-T Tactical Unattended Ground Layer: ManeuverLayer: Space Layer: AirborneLayer: Assured Communications Anywhere in the World Without Fixed Infrastructure and Zero Setup Time

4 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 4 Connexion by Boeing People working together To revolutionize the way we work, communicate, entertain ourselves and relax while mobile. Connexion by Boeing SM

5 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 5 Connexion by Boeing SM Onboard Wireless LAN connects passengers to Connexion offboard service Certified usage of passenger wireless devices during BA & DLH trials in the first half of 2003 Full-scale launch of service in April 2004

6 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 6 787

7 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 7 Flight Test

8 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 8 Future Allocation & Utilization Static Spectrum Management is Limited in Its Ability to Improve Spectrum Utilization Efficiencies 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 Sparse Use Observations Show Bands of Local Heavy and Sparse Activity Temporal Usage Characteristics Vary by Band & Service Temporal Usage Characteristics Vary by Band & Service Potential for Usage Dependent on Incumbent Service & Equipment Potential for Usage Dependent on Incumbent Service & Equipment Heavy Use Medium Use

9 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 9 What is the XG Program? Develop both the Enabling Technologies and System Concepts to Dynamically Utilize Spectrum –Improve Efficiency of Current, Static Assignments for Voice and Data (Threshold: Factor of 10, Objective: Factor of 20) –Provide Capability to Share Spectrum with disparate systems RF emitters detect each other and adjust automatically XG Systems Will Opportunistically Utilize Unoccupied Spectrum in Time, Space, and Frequency

10 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 10 Key Technologies Develop Both the Enabling Technology and the System Concepts to Dynamically Use Spectrum

11 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 11 RRM Extension Options RRM blue stars show the location of RRM extensions, though RRM pink stars are remotely possible. RRM Applications are outside the 802.11 specs. MAC PLCP PMD PLME PHY SAP PMD SAP SME MLME PLME SAP MLME SAP PLME SAP MAC SAP RRM Applications (outside 802.11)

12 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 12 11k Scope This Task Group will define Radio Resource Measurement enhancements to provide mechanisms to higher layers for radio and network measurements.

13 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 13 Relationship of RCPI, Operating Point, Sensitivity, SNR Received Channel Power Operating Margin Minimum Operating Point Multipath observed Impairment input SNR Rx Sensitivity Rx Implementation dBm Loss Theoretical Operating Point Actual minimum input SNR needed to Theorertical support datarate needed to support datarate Rx Equivalent Input Noise Noise Figure Thermal Noise Floor (-101.5dBm) Rx Input Noise & Interference Channel Noise & Interference Rx Input Signal

14 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 14 TGh layer management model Extract from 802.11h-D2.1.32, which addresses some measurement extensions for DFS and TPC. MAC Timing Measurement Processing Measurement Policy Channel Switch Decision Measurement Frames SME MLME Channel Switch Timing PLME SME MLME MREQUEST /MREPORT Measurement Frames Measurement Policy MEASURE CHANNEL SWITCH MREQUEST /MREPORT Figure 26 – Layer Management Model

15 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 15 MAC Timing Measurement Processing Measurement Policy Channel Switch Decision Measurement Frames SMEMLME Channel Switch Timing PLME SMEMLME MREQUEST /MREPORT Measurement Frames Measurement Policy MEASURE CHANNEL SWITCH MREQUEST /MREPORT 11h

16 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 16 Subnet B Subnet A R R 802.11f Context Blob (Certificates, pre- auth, address, etc) Context Transfer Packet WLAN Context Transfer 802.16, 802.20, Or 802 Cellular 802.11

17 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 17 Subnet B Subnet A R R 802.11f Context Blob (Certificates, pre- auth, address, etc) Context Transfer Packet WLAN Context Transfer 802.16, 802.20, Or 802 Cellular 802.11

18 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 18 Subnet B Subnet A R R 802.11f Context Blob (Certificates, pre- auth, address, etc) Context Transfer Packet WLAN Context Transfer 802.16, 802.20, Or 802 Cellular 802.11

19 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 19 Subnet B Subnet A R R 802.11f Context Blob (Certificates, pre- auth, address, etc) Context Transfer Packet WLAN Context Transfer 802.16, 802.20, Or 802 Cellular 802.11

20 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 20 Subnet B Subnet A R R 802.11f Context Blob (Certificates, pre- auth, address, etc) Context Transfer Packet WLAN Context Transfer 802.16, 802.20, Or 802 Cellular 802.11

21 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 21 AP Measurements Processor AP1 10/100BaseT Per STA TableAP Table STA1 Certs Pre-auth User CIM Schema QoS Context Blob Context Blob Context Blob 802.11h Request For Info or

22 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 22 AP1STA1 Card Measurements

23 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 23 RRM Big Picture Upper Layers MAC and PHY Layers PHY Radio Information MAC Radio Information PHY MAC IP Users of Radio Information Session Users of Radio Information Transport Users of Radio Information Presentation Application Users of Radio Information Interface to Upper Layers

24 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 24 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. MAC PLCP PMD PLME PHY SAP PMD SAP SME MLME PLME SAP MLME SAP PLME SAP MAC SAP RRM Applications (outside 802.11)

25 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 25 MAC PLCP PMD PLME PHY SAP PMD SAP SME MLME PLME SAP MLME SAP PLME SAP MAC SAP STA1 AP1 Reports RPE Histogram Frame Report 11h Get Req-Air GetCCA REQUESTS REPORTS Beacon on Setup Mgt Frames Report Request RRM MAC/PHY Interchanges MGT NDIS Linux

26 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 26 MAC/PHY Context SME AP1 STA1 AP1 AP STA STA1STA2STA3STA4 AP1 STA1 AP1 STA1 802.11f Context Blob 802.11h Request for Information MLME PLME MAC PLCP PMD MLME PLME MAC PLCP PMD MAC PLCP PMD PLME MLME MAC PLCP PMD PLME MLME MAC PLCP PMD PLME MLME MAC PLCP PMD PLME MLME

27 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 27 MIBs – current 802.11 –Basic measurements & configuration for STA –Widely implemented in APs –Very simple monitoring of global AP statistics 802.1x –Detailed auth state for individual 1x ports –Also some per port statistics –Not widely implemented in access points today Bridge MIB –Possible to get some info on which STAs are associated with an AP –Implemented in some APs –Not 802.11 specific, little MAC, and no PHY statistics

28 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 28 Work from Other TGs 802.11d –dot11CountryString TGe –dot11AssociatedStationCount –dot11ChannelUtilization –dot11FrameLossRate TGi –Write only key access, & IV status TGh –Configuration, but no status, monitoring or statistics!!!

29 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 29 Purpose of Additions Enable better diagnostics of problems –Using info that is easy and cheap to gather Enable better frequency planning, optimize network performance –Enable automatic frequency planning Enable new services –Location based services –Voice Over IP (VOIP)

30 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 30 Diagnostics Interference from non 802.11 sources Interference from other 802.11 networks Interference from other APs within same ESS Interference from other APs within different ESSs

31 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 31 Added Station Table to MIB Station table is list of wireless STAs an AP knows about Also applicable to IBSS Currently implemented by many APs, as proprietary MIB/telnet/web interface

32 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 32 Stations Listed in Table Only wireless stations listed Stations that have communicated with this STA –Authenticating stations –Authenticated stations –Associated stations –WDS links Wireless stations known about through DS only (e.g. pre-auth)

33 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 33 Stations communicated with Table includes all stations a station has received any frames from For each station expose full state of communication with that station –Pre RSN authentication state –802.1x port ID Further auth info can be found from 802.1x MIB –Association state –Detailed link statistics

34 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 34 Link Statistics dot11MACStatistics Counts of –MSDUs/MPDUs received/transmitted –Channel utilization in rx & tx direction Measured as total μs Data rate & modulation of last rx and tx RSNI, RCPI, and signal quality in legacy RSSI Link margin as seen by other station –Available for 11h stations (undefined in specification) –Either use recent measurement report, or request report for each SNMP request

35 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 35 Add MAC Statistics to MIB Channel utilization from TGe Total associated stations Total authenticated stations Optional events to notify mgmt station of authentication and association events –Current MIB sends TRAPS on assoc/auth failures

36 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 36 Events to Report Allow all events to be configurable as –Not reported –Reported as TRAP (unreliable) –Reported as INFORM (reliable) Default configuration should give same events as current 802.11 MIB Report all pre RSN auth/deauth events Report all association/deassocation events

37 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 37 Requirements Categories Data, Voice, Video Data – QoS, wireless net (a, b, g, h) Voice – RSSI, RCPI, RSNI, Delay, Jitter, Encryption, device processor, wireless net (a, b, g, h) Video – RSSI, RCPI, RSNI, Encryption, device processor, wireless net (a, b, g, h) Diagnostics (non-802.11, 802.11, other APs) Access Point Table Station Table (BSS and IBSS) Link stats (counts, data rates, RSSI, link margin) MAC Statistics (channel utilization, total stations, events) Events (auth, deauth, associate, deassociate, current MIB) Coexistence Measurements Retries Clear Channel Assessment

38 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 38 Technical Topics MIBs Signal Strength Standardizing RSSI (RCPI) Real Time Parameters Real Time Issues Retries Measuring Transmission Speeds Measuring Throughput in WLANs VOIP Radio Resource Issues Video Radio Resource Issues Additional Information needed in the MIBs (802.1x, 802.11, 802.1p) Diagnostics Needed for Effective Mgt of WLANs

39 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 39 Goal of Radio Measurement: Initial deployment – Enable some degree of automatic radio configuration Network expansion – Enable some degree of automatic radio reconfiguration Enable Radio Aware Performance (monitoring, roaming, handoff) – Provide information to monitor radio performance and fix problems – Facilitate better roaming

40 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 40 Define Radio Configuration: A set of 802.11 parameter values, individualized for each BSS in a WLAN, that determine WLAN radio performance Including, but not limited to: –BSS channel/Regulatory Class –AP transmit power –Client transmit power limit

41 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 41 What will radio measurements allow us to do? –Simplify and/or automate WLAN radio configuration –Achieve better performance in dense BSS deployments –Better utilize radio resources across client stations –Alert WLAN administrator to problems –Notify client station applications of current radio status, channel status and status of adjacent BSSs on alternate channels –Each company uses measurements to add value

42 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 42 What did we measure? –Attributes that characterize the WLAN radio environment on all channels –Attributes that affect or reflect WLAN radio performance on all channels –Attributes that are not manufacturer specific –Define the simplest, smallest set of measurements required

43 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 43 Two Categories of RM Statistical Measurements characterize the radio environment in a long-term statistical sense. For example, –Measure 802.11 traffic load as channel busy fraction 1 and CSMA access delay –Measure non-802.11 noise & interference as received power histogram 1 Identity Measurements identify stations that affect each others performance. For example, –Identify each neighbor AP by measuring its beacon (MAC address) –Identify each neighbor STA and its serving AP in a similar manner –Identify hidden STA when receiving frames to STAs without receiving corresponding ACK 1: these measurements are already in 802.11h specification

44 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 44 What changes are needed in all stas? Wireless MAC message protocol –Built on 802.11h mechanisms and measurement frames –Added RRM capability bit and RRM action frame type –Augmented 802.11h measurements with new requests/reports MAC firmware – Handle new management frames in the wireless MAC protocol – Compute measurement payloads from PHY registers and traffic –Log Measurement Requests/Reports in MIB

45 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 45 What additional changes are needed in access points? Process measurement requests from external entity –Translate external request into measurement action at AP radio –Translate request into action frame and send to client stations –Perform these actions at periodic interval, if requested Accumulate, store and/or report measurements –Measurements taken at the AP radio –Measurements reported by client stations –Method of conveyance is a separate discussion –Log Measurement Requests/Reports in MIB

46 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 46 11k Requests Measurement Request Element Beacon Request Channel Load Request Frame Request Noise Histogram Request STA Statistics Request Location Configuration Indication (LCI) Request QoS Metrics Request (for QOS streams)

47 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 47 Measurement Report Element Beacon Report Frame Report Channel Load Report Noise Histogram Report Location Configuration Indication (LCI) Report STA Statistics Report QoS Metrics Report (for QOS streams) 11k Reports

48 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 48 11k Other AP Channel Report, Channel Load, Access Delay and Available AdmissionCapacity in beacons Neighbor Request/Report frames (lists APs in neighborhood) Link Measurement Request/Report frames (quick link test) Location

49 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 49 What should not change at any station? –Wireless MAC control frames and procedures –Wireless MAC data frames and procedures –Any hardware, including MAC and PHY

50 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 50 Future Allocation & Utilization Static Spectrum Management is Limited in Its Ability to Improve Spectrum Utilization Efficiencies 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 Sparse Use Observations Show Bands of Local Heavy and Sparse Activity Temporal Usage Characteristics Vary by Band & Service Temporal Usage Characteristics Vary by Band & Service Potential for Usage Dependent on Incumbent Service & Equipment Potential for Usage Dependent on Incumbent Service & Equipment Heavy Use Medium Use

51 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 51 What is the XG Program? Develop both the Enabling Technologies and System Concepts to Dynamically Utilize Spectrum –Improve Efficiency of Current, Static Assignments for Voice and Data (Threshold: Factor of 10, Objective: Factor of 20) –Provide Capability to Share Spectrum with disparate systems RF emitters detect each other and adjust automatically XG Systems Will Opportunistically Utilize Unoccupied Spectrum in Time, Space, and Frequency

52 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 52 Key Technologies Develop Both the Enabling Technology and the System Concepts to Dynamically Use Spectrum

53 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 53 Measurements Necessary for Future Growth Fast Track for Radio Resource Measurement More Control May Be Adopted as a Next Step (another task group, 11v) Future Technologies Require More Measurement Automating Radio Environment Adaptation Conclusions

54 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 54 11k Status Jul 06 3 rd Letter Ballot Passed 4 th Recirculation Letter Ballot Passed Going to 5 th Recirculation Letter Ballot January 07 Expect to go to Sponsor Ballot in 07 Expect to be a standard mid to late 2007

55 doc.: IEEE 802.11-06/1888r0 Submission Nov 2006 Richard Paine, BoeingSlide 55 For WiFi Alliance Get approval for a WFA Study Group Request start of acceptance/testing/conformance criteria Next major step to 802.11 sophistication and development VOIP Handoffs via the Neighbor Report Tools to further the standard and the industry


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