Lauri Wirola Location and Commerce, Nokia ICL-GNSS 2011, 29-June-2011

Transcription

1 Lauri Wirola Location and Commerce, Nokia ICL-GNSS 2011, 29-June-2011

2 Outline case for standardized location technologies location standards categories brief history current state and deployment status location standards state-of-the-art

3 Technology challenge with(out) any connectivity must work everywhere environment is not an excuse fast time-to-first-fix

4 Why standards bolts and nuts interoperability is essential make money through licensing

5 Space of standardized positioning technologies in use today Availability 67% <50m 95% <150m remote rural suburban city A-GPS Network-Based Methods (ECID, TDOA) indoors 1m km 3km 10km Accuracy

6 control plane vs. user plane two ways of carrying positioning signaling to the device control plane integral part of the cellular network low bandwidth high integrity and security use case cases limited to e-call, law & enforcement and network planning/monitoring user plane works on top of the data connectivity provided by the physical network high bandwidth potential issues with integrity de-facto method of providing position information to location-based value-added services

7 architecture big picture Protocols: Control Plane: RRLP/RRC/LPP User Plane: SUPL GNSS satellite GSM, UMTS, LTE Location Server (SMLC) (BSS, RNC, MME) - Network maintenance (e.g. cell-id database) - Network control WARN Assistance data services (GMLC) Location-based services Authorities

8 3GPP Radio Resource Location Protocol Rel-5/8 OMA Secure User Plane Location Rel 1.0/2.0

9 In the beginning history of location standards dates back to the late 90 s work in GSM, AMPS, TDMA and CDMA domains UMTS followed a few years later nowadays GSM, UMTS and LTE positioning work done in 3GPP 3GPP2 taking care of CDMA/CDMA2000 networks

10 Radio Resource LCS Protocol today the de-facto standardized positioning protocol is RRLP Rel-5 control plane positioning protocol for GSM practically in every mobile phone supports AGPS (Assisted GPS) with GPS L1 C/A support E-OTD (Enhanced Observed Time Difference) Rel-7 added Galileo and Rel-8 the rest of the GNSSs

11 RRLP contents (Rel-7 onwards) Assistance Data E-OTD Assistance GPS Assistance GANSS Assistance Reference BTS BTSs to measure -estimated OTDs - RTDs - positions Reference Time Reference Location DGPS Navigation Model Ionosphere Model UTC Model Almanac Acquisition Assistance Real-Time Integrity Ephemeris Extension Common Assistance Data Reference Time Reference Location Ionosphere Model Earth-Orientation parameters Generic Assistance Data Inter-GNSS time model DGANSS Navigation model Real-Time Integrity Data Bit Assistance Reference Measurement Almanac UTC model Ephemeris Extension Auxialiary Information

12 User Plane large majority of positioning assistance is today carried over the User Plane connection Open Mobile Alliance : Secure User Plane Location User Plane wrapper for RRLP provides security, authentication, privacy, charging and roaming works over the data connection in 3GPP networks SUPL Rel 1.0 deployed in hundreds of millions devices globally

13 OMA Secure User Plane Location Rel 3.0 3GPP LTE Positition Protocol Rel-9/10 OMA LTE Positioning Protocol Extensions Rel 1.0

14 LTE Positioning Protocol, LPP in autumn GPP started the latest push for location services control plane positioning protocol for LTE (3.9G) and LTE-Advanced (4G) networks LPP was designed from day one to be true GNSS self-contained (AGNSS, ECID, OTDOA) to do the bare minimum to support emergency, law&enforcement and network maintetance use cases (but nothing more!)

15 LTE Positioning Protocol Extensions 3GPP knew that a wide number of emerging technologies were out-of-scope to support future development 3GPP decided to include extension containers to the LPP messages Open Mobile Alliance started work on LPP Extensions Rel 1.0 early 2010 standard is now in candidate status waiting for approval

16 Vision for LPP Extensions to bring all the already standardized technologies under the same umbrella basic AGNSS enhanced Cell ID hyperbolic time-based methods to bring the potential of professional-grade GNSS to the mass markets, including Real-Time Kinematics Precise Point Positioning take first steps in standardizing indoor-capable positioning methods

17 Fixed Baseline error (m) Assisted GNSS in LPPe Rel 1.0 continuous carrier phase assistance accuracy multiple reference stations reference station mobility periodic session control local ionosphere corrections accuracy also on periodic basis also geomagnetic storm warnings 4 x Citymarket car park; Test 1; 8th Jan 2007 : Fixed solution Validation in 25 s. East North Up Time (s)

18 Assisted GNSS in LPPe Rel 1.0 local troposphere corrections accuracy either delays or surface parameters mapping functions altitude assistance availability SV mechanics time-to-first-fix mass, solar panel reflectivity, solar radiation pressure navigation model degradation integrity differential code biases accuracy

19 Cellular methods Enhanced Cell ID GSM, UMTS, LTE base station position, Tx power, antenna gain, azimuth, beam width, frequency drift Time Difference of Arrival E-OTD OTDOA OTDOA-IPDL

20 Non-cellular methods WLAN radiomaps locations (indoor and civic support), coverage area, Tx power tags/beacons support for carrying locations of sets of tags/beacons RFID, BT Low Energy motion state delivery

21 Secure User Plane Location 3.0 OMA SUPL Rel 3.0 is the preferred User Plane wrapper for LPPe Rel 1.0 adds on top of SUPL 1.0 geographic and temporal triggers (SUPL 2.0) streaming of assistance data (SUPL 3.0) locally discovered assistance/positioning server (SUPL 3.0) support for WLAN data bearer (SUPL 3.0)

22 Space of standardized positioning technologies in use tomorrow Availability 67% <50m 95% <150m remote rural suburban city indoors A-GNSS Wi-Fi Positioning tags, beacons Network-Based methods (ECID++, TDOA) 1m km 3km 10km Accuracy

23 Roadmap GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS RRLP Rel-8 with GPS & GANSS SUPL 1.0 R SUPL 2.0 finalized Location Standards Vol-1 SUPL2-RRLP deployments Vol-2.0 LPP Rel-9 with GNSS Vol-2.1 LPP Extensions AGNSS harmonization RTK, PPP Advanced atmosphere models tags, beacons, access points Vol-2.2 Location Standards Vol-2 SUPL 3.0 finalized Streaming Cloud architecture SUPL3-LPP deployments Location Sandards Vol-3 (authentication, peer-to-peer assistance, indoors, visual assistance?) Multiple GNSSs, multiple signals

24 Key takeaways standardized positioning technologies (AGNSS, Enhanced Cell ID, TDOA-methods) are backbone technologies for location services OMA LPP Extensions 1.0 and OMA SUPL 3.0 push the envelope of standardized positioning technologies predict that after the latest push there will be a quiet period to give time for markets to evolve in the coming years the emphasis is on standardizing the indoor positioning methods

25 Key takeaways standardized positioning technologies (AGNSS, Enhanced Cell ID, TDOA-methods) are backbone technologies for location services OMA LPP Extensions 1.0 and OMA SUPL 3.0 push the envelope of standardized positioning technologies predict that after the latest push there will be a quiet period to give time for markets to evolve in the coming years the emphasis is on standardizing the indoor positioning methods THANK YOU! Q & A