[Openbts-discuss] GSML1FEC.cpp timingError

[Peter S. <pet...@ya...>]

Hello list:

After a few times mobile to mobile call run, have noticed the timing error accumulate as below the 2 phone logs. Wondering what is likely the cause?

Also, the actual print is 2, given the phone is close to the BTS, wondering this value shall be 0 instead of 2?

----------------------------------------------------------------------------
Phone 1:

Start:
1308681757.3071 ERROR 3039554416 GSML1FEC.cpp:1977:sendFrame: obj: 0x870a2f0 SACCHL1Encoder timingError=0.1709 actual=2.0000 ordered=1.9538 target=2.1709

After some time:
1308682284.3464 ERROR 3039554416 GSML1FEC.cpp:1977:sendFrame: obj: 0x870a2f0 SACCHL1Encoder timingError=0.7822 actual=2.0000 ordered=2.5047 target=2.7822
--------------------------------------------------------------------------------
Phone 2:
Start:
1308681714.4111 ERROR 3046300528 GSML1FEC.cpp:1977:sendFrame: obj: 0xb6e36558 SACCHL1Encoder timingError=0.1895 actual=2.0000 ordered=1.9705 target=2.1895

After some time:
1308682348.0065 ERROR 3046300528 GSML1FEC.cpp:1977:sendFrame: obj: 0xb6e36558 SACCHL1Encoder timingError=0.4941 actual=2.0000 ordered=2.2447 target=2.4941
----------------------------------------------------------------------------------


The configuration is USRP1+WBX with public 2.6 release, the two phones are sitting in a same table less than 10 meters away from the BTS.