Some users have reported to me a strange behavior of TA when connected to 4G TDD (specifically WindTre's B38).
So I collected some data (40 points) and got this graph:
The result is that TA TDD approximate to: y = x/2 + 20.5
Where y is the TA reported by Android and x is the real TA (from baseband)
We have seen this behavior on Sony XZ1 (G8341), Xiaomi 10T (M2007J3SY), Realme GT Master (RMX3363).
Note that on these same devices TA FDD = TA / 2
Some users have reported to me a strange behavior of TA when connected to 4G TDD (specifically WindTre's B38). So I collected some data (40 points) and got this graph:
The result is that TA TDD approximate to:
y = x/2 + 20.5Where y is the TA reported by Android and x is the real TA (from baseband)We have seen this behavior on Sony XZ1 (G8341), Xiaomi 10T (M2007J3SY), Realme GT Master (RMX3363). Note that on these same devices TA FDD = TA / 2
Can anyone else reproduce this issue?