FOA Background & Goals• This FOA is the AGPS segments from a previously completed 2G E911 Phase 2 FOA of the Ericsson SMPCs*. *Why? In early 2008 the team decided to split the SMPC FOA into two components – an SMPC E911 FOA, and a separate, later FOA for AGPS. TNRP reviewed and accepted the SMPC FOA results in April, 2008. Splitting out AGPS was expedient. With the SMPC approved for E911 Phase 2 the Region teams were able to complete SMPC deployment and BSC migration within 2008. Delays with AGPS handsets prevented completion of the AGPS FOA testing until December 2008.
FOA Background & Goals• This FOA is the AGPS element of a previously completed 2G FOA of the Ericsson SMPCs.• The Ericsson SMPC is now fully deployed in the network.• AGPS is presently turned off on all SMPCs except in Atlanta – FOA test site.
FOA Background & Goals cont.Primary FOA goals: Perform test cases for all AGPS functions in the Ericsson 2G network. Measure the location success rate of GSM AGPS supported by the Ericsson SMPC. (Confirm that AGPS supports compliance with FCC mandates for E911 Phase 2.) Confirm that the system is stable while running with AGPS operating. Confirm that counters and event logs are correct.NOTE: AGPS accuracy is NOT an aspect of this FOA – accuracy is principally a property of the handset and is established with each handset through vigorous handset vendor testing.
Summary of AGPS FOA Results• Ericsson SMPC Support of AGPS • - Passed all test cases (one case not attempted)• Integrated 2G Network Support of AGPS – Ericsson Market • - Satisfactory location success rate with Sony-Ericsson handsets. - SMPC operated without critical alarms for extended soak. - Several configuration details worked out in operation. - Counters and event logs were verified.
Ericsson Atlanta SMPCSummary of Test Results• A subset of the Ericsson SMPC 9.0 CP1 and CP2 release acceptance test cases were run. These cases include all but one of the tests specifically related to AGPS operation.• Full detail in exit report word document.• Summary: • 43 SMPC tests cases were run in the lab. • 12 key SMPC and AGPS tests were repeated in the field. • All cases passed with SMPC Release 9.0, CP2. (That release includes fixes to open cases from CP1 testing.) AT&T Proprietary The information contained here is for use by authorizedPage 6 person only and is not for general distribution.
Test Cases RunCase Passed Description3.1.4 √ Cell Data Import to SMPC3.1.6 √ PDE Administration (control of PDE selection)3.1.7 √ Alarm Handling (correct alarm priority and correct alarm extinguish on fault correction)3.1.8 √ Statistics Counters (counts verified at the Ericsson OSS and at NDR)126.96.36.199 √ MT-LR, MS-based AGPS Idle188.8.131.52 √ MT-LR, MS-based AGPS Dedicated184.108.40.206 √ NI-LR/E911, MS-based AGPS AT&T Proprietary The information contained here is for use by authorized person only and is not for general distribution.
Test Cases Run (cont.)Case Passed Description3.3.3 √ Enable Positioning Method base on Cell Id3.5.2 √ MS-Based AGPS Failover to CGI-TA3.7.1 √ TCS Redundancy Configuration (XADS failover to backup XADS server)3.8.1 √ TP-PDE internal failback from U-TDOA to CGI- TA (SMPC passes CGI+TA from TDOA PDE)3.8.2 √ TP-PDE U-TDOA complete system failure (SMPC sends CGI+TA when downstream PDE completely fails.) AT&T Proprietary The information contained here is for use by authorized person only and is not for general distribution.
Ericsson Atlanta SMPCFOA Setup Abis E/// A E/// Lg TCS E/// BSC MSC GMLC BTS Lb E/// Pvt SMPC IP TCS Lb XADS TP WLS AT&T Proprietary The information contained here is for use by authorizedPage 10 person only and is not for general distribution.
Ericsson Atlanta SMPCFOA Test Focus Abis E/// A E/// Lg TCS E/// BSC MSC GMLC BTS Lb All Location Services PLRs E/// handled in SMPC. Pvt New, regional SMPC IP Ericsson SMPC TCSAGPS also All Lb handled here. XADS Existing, market- level SMLC TP (TruePosition WLS All Emergency WLG) Services PLRs handled by TP. AT&T Proprietary The information contained here is for use by authorizedPage 11 person only and is not for general distribution.
List of Ericsson ATP Test Cases by Group Notes on regional ATP: To ensure correct and consistent installation of SMPCs, the SE Regiondeveloped an Acceptance Test Plan. The test results provide useful background on the FOA activity and are important for deployment.
Ericsson Atlanta SMPC AT&T Proprietary The information contained here is for use by authorizedPage 13 person only and is not for general distribution.
Ericsson Atlanta SMPC AT&T Proprietary The information contained here is for use by authorizedPage 14 person only and is not for general distribution.
Ericsson Atlanta SMPC AT&T Proprietary The information contained here is for use by authorizedPage 15 person only and is not for general distribution.
General Notes on AGPS and Additional Test Details AT&T Proprietary The information contained here is for use by authorized person only and is not for general distribution.
AGPS IntroductionAGPS background• Given the need for more accurate location determination technologies, driven primarily by the support of both advanced location-based services and to meet the E911 phase II requirements, AT&T has implemented AGPS technologies in our UMTS and GSM networks. Following this implementation, AGPS capable devices will be certified for use in the AT&T network for E911 Emergency and Location-Based Services.• AGPS is being introduced to provide E911 location information by devices (GSM and Dual-RAT), both in the GSM and UMTS networks. In addition, a wide range of commercial location services will be enabled. There are two basic modes of AGPS operation: Control Plane, which uses Layer 3 signaling messages with RRC (UMTS) and RRLP (GSM) protocols, and SUPL, which uses the RRLP protocol but through an IP connection with a server ("user plane").• Field test clusters have been set up in designated markets to test AGPS and enabled with AGPS Control Plane functionality. CTO has identified priority test points in each test cluster. These test points encompass different RF environments and will be used for testing accuracy, response time, confidence, and yield for AGPS-capable handsets. AT&T Proprietary The information contained here is for use by authorized person only and is not for general distribution.
AGPS Test Call FlowThe following is the basic call flow for AGPS testing using the PSAP Simulator: AT&T Proprietary The information contained here is for use by authorized person only and is not for general distribution.
Test Environment Definition Environment type Description Dense urban The dense urban environment consists of dense built-up areas with mainly high buildings (over 20 stories, or > 40 m). Typically there are very few or no trees and vegetation within the areas due to the building density (> 75%, or approx. 30 m separation between buildings), mostly hotels and office buildings. The cells are usually small sized with short distance between base stations and a site distance ~< 0.5 km. Urban The urban environment consists of metropolitan regions, industrial areas, closely spaced residential homes and multi-storied apartments. Building density is high but inter-spread with trees and other vegetation, resulting in building density of approximately 50 to 70%, or distance between buildings of 30 to 50 m. Business centers of medium-sized cities as well as portion of outer areas of dense urban cities in which the average building height is approximately 20 to 40 m. The cells are usually medium sized with short distance between base stations and site distance between ~0.5 -1.5 km. Suburban The suburban environment consists mainly of single-family homes, shopping malls, and office parks. Significant vegetation, trees, and parking lots are intermixed with buildings, resulting in building density of less than 50%, or distance between buildings of 50 to 100 m. Most buildings are between one and three stories high, averaging less than 30 m total in height, but exceptions do occur. Significant areas within small and medium cities are examples of this environment. A combination of coverage and capacity planned area with a mixture of large and small cell radius. Rural The rural environment consists mainly of open space with very few buildings or residences. Major interconnection highways, farms, or barren land are found within rural areas. The largest variation in cell coverage is found in rural areas due to the large variation of vegetation and terrain. Cell size is often large. Indoor The indoor environment consists of building interiors with construction materials typically made of wood, steel, glass, and reinforced concrete. Most indoor environments have a limited sky view. AT&T Proprietary The information contained here is for use by authorized person only and is not for general distribution.
Ericsson Atlanta AGPS Test Points Test Point Classification Lat Long # Sats Description -84.3-840 Fire hydrant on NE corner of Baker St &D-1 Dense Urban 33.76228 4 4 Courtland St -84.3804 Fire hydrant on N side of Buckhead Rd midblockD-2 Dense Urban 33.83819 9 5 between Peachtree Rd & Bolling Way 33.-8443 -84.3699 Fire hydrant on SE side of Peachtree Rd midblockD-3 Dense Urban 6 8 5 between Piedmont Rd & Highland Dr -84.4079 Fire hydrant on N side of Shelton Ave E ofU-1 Urban 33.73445 3 7 Metropolitan Pkwy -84.4028 Fire hydrant on W side of Northside Dr betweenU-2 Urban 33.76164 5 8 Thurmond Rd NW & Simpson Rd NW 33.-8446 -84.3601 Fire hydrant on NW side of E Paces Ferry Rd SWU-3 Urban 6 1 7 of Lennox Rd -84.4512 Fire hydrant on NW corner of Bolton Rd &S-1 Suburban 33.82068 5 9 Moores Mill Rd -84.4797 Fire hydrant on NW side of Bolton Rd midblockS-2 Suburban 33.80930 3 8 between Tribble Dr & Parrot Ave -84.4073 Fire hydrant on NE corner of Northside Dr &S-3 Suburban 33.82087 5 7 Sagamore Dr NW -84.5836 Fire hydrant on S side of Milford Church Rd SWR-1 Rural 33.88042 1 8 in front of cemetery -84.6043 Fire hydrant on NE side of Cheatham Hill Rd 0.4R-2 Rural 33.93272 6 8 miles SW of John Ward Rd SW -84.6444 Fire hydrant on N side of Mackland Rd SW inR-3 Rural 33.89705 4 7 front of Christ Community Church -84.5755 McDonald’s at Powder Springs St SW & LakeI-1 Indoor 33.92351 4 6 Hollow Blvd SW in middle of table in NW corner 33.-8439 -84.3731 Buckhead Place Parking Garage on Level 5 inI-2 Indoor 9 4 9 front of drain SW of stairwell door AT&T Proprietary The information contained here is for use by authorized person only and is not for general distribution.
Summary of Location Success RateResults Location Success Results Dense Indoors Rural Suburban Urban Totals Total tests 189 59 205 183 156 792 Total Invalid 3 12 0 0 2 17 Total Valid 186 47 205 183 154 775 LSR 98.41% 79.66% 100.00% 100.00% 98.72% 95.36% Notes: - Only indoor testing showed poor location success. When indoor testing is removed, LSR is excellent. - All calls resulted in a valid Phase 2 response – AGPS fell back to CGI+TA as configured when AGPS failed or timed out.. AT&T Proprietary The information contained here is for use by authorized person only and is not for general distribution.
Location Success RateExit Criteria SummaryThe following FFA exit criteria were met : • All AGPS LSR measurements successful at each of the designated test points for each the market (except indoor). • Overall location success rate was > 95% ( > 99% for all but indoor locations) • Response time for AGPS was acceptable. • Mean response time < 16 seconds • Max allowed response time (95% returned)<27 seconds AT&T Proprietary The information contained here is for use by authorized person only and is not for general distribution.
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