diff options
| author | Jacob Erlbeck <jerlbeck@sysmocom.de> | 2015-08-24 14:35:14 +0200 |
|---|---|---|
| committer | Jacob Erlbeck <jerlbeck@sysmocom.de> | 2015-08-28 12:23:07 +0200 |
| commit | 60f77033ad15da909cdbc0682c781151a23c170c (patch) | |
| tree | 09aacd91770c3cae04e159f89a7388d77bbf91b0 /tests | |
| parent | e77d49f2a2c20202dbdc5386c7dfeed4e773a077 (diff) | |
poll: Use the data_ind FN as time source for current frame
The FN of the data_ind taken from the DSP are monotonic, so latency
does not affect the detection of poll timeouts if these FN are used.
If the FN is larger than a poll_fn value, it can safely be assumed
that the poll response will not arrive later on.
Currently a max_delay of 60 frames is used, which has the drawback
that additional ~250ms will pass until a lost ACK is detected.
Using the data_ind's FN alone breaks the poll timeout detection if
there are no other MS sending data blocks.
This commit adds BTS::set_current_block_frame_number that is called
with the FN taken from data_ind messages. The max_delay is set to 0
which removes the additional delay, when this FN is used to detect
poll timeouts. So the average additional delay decreases with the
number of data_ind per time. The current_frame is updated unless it
seems to have been updated already (assumed if 0 < cur_fn - block_fn
< 500). Thus the time_ind has still priority to update the
current_frame value.
Sponsored-by: On-Waves ehf
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/tbf/TbfTest.err | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tests/tbf/TbfTest.err b/tests/tbf/TbfTest.err index e49dd439..082b64df 100644 --- a/tests/tbf/TbfTest.err +++ b/tests/tbf/TbfTest.err @@ -1637,6 +1637,10 @@ TX: Immediate Assignment Uplink (AGCH) Sending data request: trx=0 ts=0 sapi=2 arfcn=0 fn=0 block=0 data=2d 06 3f 10 0f 00 00 73 8c f6 07 00 c0 0c 68 ab 2b 2b 2b 2b 2b 2b 2b Searching for first unallocated TFI: TRX=0 Found TFI=1. +TBF(TFI=0 TLLI=0xf1223344 DIR=DL STATE=FINISHED) poll timeout for FN=2654292 (curr FN 2654335) +- Timeout for polling PACKET DOWNLINK ACK. +- Assignment was on PACCH +- No downlink ACK received yet +++++++++++++++++++++++++ RX : Uplink Control Block +++++++++++++++++++++++++ ------------------------- RX : Uplink Control Block ------------------------- MS requests UL TBF in packet resource request of single block, so we provide one: |