981994 - [Tarako]Update correct invalid LTE signal strength values.

Status: RESOLVED WONTFIX

(Firefox OS Graveyard :: Vendcom, defect)

Description

[shawn ku [:sku]]

By following AOSP definition, please update SPRD LTE_SS.signalStrength/LTE_SS.rsrp/LTE_SS.rsrq/LTE_SS.ssnr to below value to avoid any misleading on SignalStrength checking on 1.4 (or newer version) if there is any version upgrade.

LTE_SS.signalStrength: 99
LTE_SS.rsrp: 2147483647
LTE_SS.rsrq: 2147483647
LTE_SS.rssnr: 2147483647
(see [1])

// Tarako Log
06-10 21:04:03.550    93   330 D RILC    : [0063]< SIGNAL_STRENGTH {[signalStrength=30,bitErrorRate=99,                CDMA_SS.dbm=-1,CDMA_SSecio=-1,                EVDO_SS.dbm=-1,EVDO_SS.ecio=-1,                EVDO_SS.signalNoiseRatio=-1,                LTE_SS.signalStrength=-1,LTE_SS.rsrp=-1,LTE_SS.rsrq=-1,                LTE_SS.rssnr=-1,LTE_SS.cqi=-1]}

[1] AOSP definition - https://github.com/android/platform_hardware_ril/blob/master/include/telephony/ril.h#L713

Comment 1

[shawn ku [:sku]]

Hi Sam:
 Please help update ril.so when you are available.

Comment 2

[sam.hua]

Okay,i will change the initial value of LET signal to 0x7FFFFFFF.
Maybe we should check the difference of our RILC and Android new version. 

which version do u reference the android, 4.4 or 4.3?

Comment 3

[shawn ku [:sku]]

AOSP 4.3/4.4 share the same ril.h about LTE signal strength.
(ie: RIL_LTE_SignalStrength and RIL_LTE_SignalStrength_v8.)

typedef struct {
    int signalStrength;  /* Valid values are (0-31, 99) as defined in TS 27.007 8.5 */
    int rsrp;            /* The current Reference Signal Receive Power in dBm multipled by -1.
                          * Range: 44 to 140 dBm
                          * INT_MAX: 0x7FFFFFFF denotes invalid value.
                          * Reference: 3GPP TS 36.133 9.1.4 */
    int rsrq;            /* The current Reference Signal Receive Quality in dB multiplied by -1.
                          * Range: 20 to 3 dB.
                          * INT_MAX: 0x7FFFFFFF denotes invalid value.
                          * Reference: 3GPP TS 36.133 9.1.7 */
    int rssnr;           /* The current reference signal signal-to-noise ratio in 0.1 dB units.
                          * Range: -200 to +300 (-200 = -20.0 dB, +300 = 30dB).
                          * INT_MAX : 0x7FFFFFFF denotes invalid value.
                          * Reference: 3GPP TS 36.101 8.1.1 */
    int cqi;             /* The current Channel Quality Indicator.
                          * Range: 0 to 15.
                          * INT_MAX : 0x7FFFFFFF denotes invalid value.
                          * Reference: 3GPP TS 36.101 9.2, 9.3, A.4 */
} RIL_LTE_SignalStrength;

typedef struct {
    int signalStrength;  /* Valid values are (0-31, 99) as defined in TS 27.007 8.5 */
    int rsrp;            /* The current Reference Signal Receive Power in dBm multipled by -1.
                          * Range: 44 to 140 dBm
                          * INT_MAX: 0x7FFFFFFF denotes invalid value.
                          * Reference: 3GPP TS 36.133 9.1.4 */
    int rsrq;            /* The current Reference Signal Receive Quality in dB multiplied by -1.
                          * Range: 20 to 3 dB.
                          * INT_MAX: 0x7FFFFFFF denotes invalid value.
                          * Reference: 3GPP TS 36.133 9.1.7 */
    int rssnr;           /* The current reference signal signal-to-noise ratio in 0.1 dB units.
                          * Range: -200 to +300 (-200 = -20.0 dB, +300 = 30dB).
                          * INT_MAX : 0x7FFFFFFF denotes invalid value.
                          * Reference: 3GPP TS 36.101 8.1.1 */
    int cqi;             /* The current Channel Quality Indicator.
                          * Range: 0 to 15.
                          * INT_MAX : 0x7FFFFFFF denotes invalid value.
                          * Reference: 3GPP TS 36.101 9.2, 9.3, A.4 */
    int timingAdvance;   /* timing advance in micro seconds for a one way trip from cell to device.
                          * Approximate distance can be calculated using 300m/us * timingAdvance.
                          * Range: 0 to 0x7FFFFFFE
                          * INT_MAX : 0x7FFFFFFF denotes invalid value.
                          * Reference: 3GPP 36.321 section 6.1.3.5
                          * also: http://www.cellular-planningoptimization.com/2010/02/timing-advance-with-calculation.html */
} RIL_LTE_SignalStrength_v8;

Comment 4

[Naoki Hirata :nhirata (please use needinfo instead of cc)]

Not sure if we need this for certification... noming.

Comment 5

[Naoki Hirata :nhirata (please use needinfo instead of cc)]

undoing nom based on discussion with bajaj.

Comment 6

[sam.hua]

Hi,
please update the lib for this modification.

Comment 7

[BMO Automation]

Firefox OS is not being worked on