0a4075d4d5
Testing response times to time.android.com from around the globe reveals in ms:- Europe <30 Middle East <68 North America <150 Johannesburg 183 Buenos Aires 220 Tokyo 226 Sydney 276 Hong Kong 285 Brisbane 295 Mumbai 349 Beijing 4691 Shanghai 4906 Russia n/a Whilst time.android.com is NOT used for GPS NTP, North American time servers are, by specifying north-america.pool.ntp.org as default in the framework, to align with pixel devices. I am assuming similar response times to these servers from around the world. Great for North America and it appears Europe but it does not address the global issue. Also, the pool.ntp.org project forbids both hardware and software vendors from using these default zone names. http://www.pool.ntp.org/en/vendors.html It makes sense, therefore, to leverage the ntp.org's existing 'android' vendor name to make the default ntp server for GPS purposes: 1.android.pool.ntp.org this will return a random but accurate NTP server in close geopraphic proximity to the device. Testing on my own build in the UK seems to improve hot and cold TTFF considerably. Change-Id: I144af45757efa35b32daf034eece6e046d2bde79 Signed-off-by: ronaxdevil <pratabidya.007@gmail.com>
159 lines
4.1 KiB
Plaintext
159 lines
4.1 KiB
Plaintext
#gps_conf_from_sim.conf
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#XTRA_SERVER_1=https://xtrapath2.izatcloud.net/xtra2.bin
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#XTRA_SERVER_2=https://xtrapath2.izatcloud.net/xtra2.bin
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#XTRA_SERVER_3=https://xtrapath3.izatcloud.net/xtra2.bin
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# _SET = 1
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# _CLEAR = 0
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ERR_ESTIMATE=0
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#NTP server
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NTP_SERVER=1.android.pool.ntp.org
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#XTRA CA path
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XTRA_CA_PATH=/system/etc/security/cacerts
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# DEBUG LEVELS: 0 - none, 1 - Error, 2 - Warning, 3 - Info
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# 4 - Debug, 5 - Verbose
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# If DEBUG_LEVEL is commented, Android's logging levels will be used
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DEBUG_LEVEL = 2
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# Intermediate position report, 1=enable, 0=disable
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#INTERMEDIATE_POS=0
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# supl version 1.0
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#SUPL_VER=0x20000
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# Emergency SUPL, 1=enable, 0=disable
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#SUPL_ES=0
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#Choose PDN for Emergency SUPL
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#1 - Use emergency PDN
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#0 - Use regular SUPL PDN for Emergency SUPL
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#USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL=0
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# SUPL Mode (0=Standalone, 1=MSB, 2=MSA)
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#SUPL_MODE=1
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# GPS Capabilities bit mask
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# SCHEDULING = 0x01
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# MSB = 0x02
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# MSA = 0x04
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# ON_DEMAND_TIME = 0x10
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# GEOFENCE = 0x20
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# MEASUREMENTS = 0x40
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# default = ON_DEMAND_TIME | MSA | MSB | SCHEDULING | GEOFENCE | MEASUREMENTS
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CAPABILITIES=0x77
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# Accuracy threshold for intermediate positions
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# less accurate positions are ignored, 0 for passing all positions
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# ACCURACY_THRES=5000
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################################
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##### AGPS server settings #####
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################################
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# FOR SUPL SUPPORT, set the following
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# SUPL_HOST=supl.host.com or IP
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# SUPL_PORT=1234
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# FOR C2K PDE SUPPORT, set the following
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# C2K_HOST=c2k.pde.com or IP
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# C2K_PORT=1234
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####################################
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# LTE Positioning Profile Settings
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####################################
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# 0: Enable RRLP on LTE(Default)
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# 1: Enable LPP_User_Plane on LTE
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# 2: Enable LPP_Control_Plane
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# 3: Enable both LPP_User_Plane and LPP_Control_Plane
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#LPP_PROFILE = 0
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################################
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# EXTRA SETTINGS
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################################
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# NMEA provider (1=Modem Processor, 0=Application Processor)
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#NMEA_PROVIDER=0
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# Mark if it is a SGLTE target (1=SGLTE, 0=nonSGLTE)
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#SGLTE_TARGET=0
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##################################################
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# Select Positioning Protocol on A-GLONASS system
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##################################################
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# 0x1: RRC CPlane
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# 0x2: RRLP UPlane
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# 0x4: LLP Uplane
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#A_GLONASS_POS_PROTOCOL_SELECT = 0
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##################################################
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# Select technology for LPPe Control Plane
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##################################################
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# 0x1: DBH for LPPe CP
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# 0x2: WLAN AP Measurements for LPPe CP
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#LPPE_CP_TECHNOLOGY = 0
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##################################################
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# Select technology for LPPe User Plane
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##################################################
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# 0x1: DBH for LPPe UP
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# 0x2: WLAN AP Measurements for LPPe UP
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#LPPE_UP_TECHNOLOGY = 0
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##################################################
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# AGPS_CONFIG_INJECT
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##################################################
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# enable/disable injection of AGPS configurations:
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# SUPL_VER
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# SUPL_HOST
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# SUPL_PORT
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# C2K_HOST
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# C2K_PORT
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# LPP_PROFILE
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# A_GLONASS_POS_PROTOCOL_SELECT
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# 0: disable
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# 1: enable
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#AGPS_CONFIG_INJECT = 1
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# AP Coarse Timestamp Uncertainty
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##################################################
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# default : 10
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# or as per clock uncertainty of product
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#AP_TIMESTAMP_UNCERTAINTY = 10
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#####################################
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# GNSS PPS settings
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#####################################
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#AP DR engine availability status
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# 0 : NO AP DR (default)
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# 1 : AP DR enabled
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#EXTERNAL_DR_ENABLED = 0
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#####################################
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#DR_SYNC Pulse Availability
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#####################################
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# 0 : DR_SYNC pulse not available (default)
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# 1 : DR_SYNC pulse available
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#DR_SYNC_ENABLED = 0
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#####################################
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#PPS Device name
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#####################################
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#PPS_DEVICENAME = /dev/pps0
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#####################################
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#AP Clock Accuracy
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#####################################
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#AP_CLOCK_PPM = 100
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#####################################
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#MAX ms difference to detect missing pulse
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#####################################
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#MISSING_PULSE_TIME_DELTA = 900
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#####################################
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#Propagation time uncertainty
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#####################################
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#PROPAGATION_TIME_UNCERTAINTY = 1
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