tbf: Store the timing advance (TA) value in the GprsMs object

The TA value rather relates to an MS and not to a single TBF. So all
TBFs share the same TA value. Currently the TA value is stored per
TBF and eventually copied from an old TBF to a new one. It is in
general only passed with an RACH request when the TLLI and thus the
MS is not yet known.

This commit adds a TA member to the GprsMs class and uses that one
when the TBF is associated to an MS object. Since the TBF is not
always associated with an MS object (after RACH or when it has been
replaced by another TBF), the TA value is still stored in each TBF
and that value is used as long as no MS object is being associated.

Sponsored-by: On-Waves ehf

2 files changed, 26 insertions, 44 deletions

diff --git a/tests/tbf/TbfTest.cpp b/tests/tbf/TbfTest.cpp
index e25f3447..2184b324 100644
--- a/tests/tbf/TbfTest.cpp
+++ b/tests/tbf/TbfTest.cpp
@@ -78,8 +78,7 @@ static void test_tbf_tlli_update()
 						0, 0, 0);
 	dl_tbf->update_tlli(0x2342);
 	dl_tbf->update_ms(0x2342, GPRS_RLCMAC_DL_TBF);
-	dl_tbf->ta = 4;
-	the_bts.timing_advance()->remember(0x2342, dl_tbf->ta);
+	dl_tbf->set_ta(4);
 
 	gprs_rlcmac_tbf *ul_tbf = tbf_alloc_ul_tbf(the_bts.bts_data(),
 						dl_tbf, 0,
@@ -114,7 +113,17 @@ static void test_tbf_tlli_update()
 	ms_new = the_bts.ms_by_tlli(0x2342);
 	OSMO_ASSERT(ms_new == NULL);
 
-	OSMO_ASSERT(the_bts.timing_advance()->recall(0x4232) == 4);
+	ms_new = the_bts.ms_by_tlli(0x4232);
+	OSMO_ASSERT(ms_new != NULL);
+	OSMO_ASSERT(ms_new->ta() == 4);
+
+	OSMO_ASSERT(ul_tbf->ta() == 4);
+	OSMO_ASSERT(dl_tbf->ta() == 4);
+
+	ul_tbf->set_ta(6);
+
+	OSMO_ASSERT(ul_tbf->ta() == 6);
+	OSMO_ASSERT(dl_tbf->ta() == 6);
 }
 
 static uint8_t llc_data[200];
@@ -439,9 +448,9 @@ static void test_tbf_single_phase()
 	OSMO_ASSERT(ul_tbf != NULL);
 
 	fprintf(stderr, "Got '%s', TA=%d\n",
-		ul_tbf->name(), ul_tbf->ta);
+		ul_tbf->name(), ul_tbf->ta());
 
-	OSMO_ASSERT(ul_tbf->ta == qta / 4);
+	OSMO_ASSERT(ul_tbf->ta() == qta / 4);
 
 	uint8_t data_msg[23] = {
 		0x00, /* GPRS_RLCMAC_DATA_BLOCK << 6 */
@@ -455,7 +464,8 @@ static void test_tbf_single_phase()
 
 	ms = the_bts.ms_by_tlli(0xf1223344);
 	OSMO_ASSERT(ms != NULL);
-	fprintf(stderr, "Got MS: TLLI = 0x%08x\n", ms->tlli());
+	fprintf(stderr, "Got MS: TLLI = 0x%08x, TA = %d\n", ms->tlli(), ms->ta());
+	OSMO_ASSERT(ms->ta() == qta/4);
 
 	printf("=== end %s ===\n", __func__);
 }
@@ -515,9 +525,9 @@ static void test_tbf_two_phase()
 	OSMO_ASSERT(ul_tbf != NULL);
 
 	fprintf(stderr, "Got '%s', TA=%d\n",
-		ul_tbf->name(), ul_tbf->ta);
+		ul_tbf->name(), ul_tbf->ta());
 
-	OSMO_ASSERT(ul_tbf->ta == qta / 4);
+	OSMO_ASSERT(ul_tbf->ta() == qta / 4);
 
 	/* send packet uplink assignment */
 	rts_fn += 52;
@@ -535,7 +545,8 @@ static void test_tbf_two_phase()
 
 	ms = the_bts.ms_by_tlli(0xf1223344);
 	OSMO_ASSERT(ms != NULL);
-	fprintf(stderr, "Got MS: TLLI = 0x%08x\n", ms->tlli());
+	fprintf(stderr, "Got MS: TLLI = 0x%08x, TA = %d\n", ms->tlli(), ms->ta());
+	OSMO_ASSERT(ms->ta() == qta/4);
 
 	printf("=== end %s ===\n", __func__);
 }
diff --git a/tests/tbf/TbfTest.err b/tests/tbf/TbfTest.err
index 20b1a724..d919b89a 100644
--- a/tests/tbf/TbfTest.err
+++ b/tests/tbf/TbfTest.err
@@ -8,6 +8,7 @@ Slot Allocation (Algorithm A) for class 0
 Creating MS object, TLLI = 0x00000000
 The MS object cannot fully confirm an unexpected TLLI: 0x00002342, partly confirmed
 Attaching TBF to MS object, TLLI = 0x00002342, TBF = TBF(TFI=0 TLLI=0x00002342 DIR=DL STATE=NULL)
+Modifying MS object, TLLI = 0x00002342, TA 0 -> 4
 ********** TBF starts here **********
 Allocating UL TBF: TFI=0 TRX=0 MS_CLASS=0
 Slot Allocation (Algorithm A) for class 0
@@ -19,6 +20,7 @@ Attaching TBF to MS object, TLLI = 0x00002342, TBF = TBF(TFI=0 TLLI=0x00002342 D
 Modifying MS object, TLLI: 0x00000000 -> 0x00002342, already confirmed partly
 The MS object cannot fully confirm an unexpected TLLI: 0x00004232, partly confirmed
 Modifying MS object, TLLI: 0x00002342 -> 0x00004232, already confirmed partly
+Modifying MS object, TLLI = 0x00004232, TA 4 -> 6
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=0.
 ********** TBF starts here **********
@@ -425,7 +427,6 @@ TBF(TFI=0 TLLI=0xf1000001 DIR=DL STATE=FLOW) Software error: Pending downlink as
 Detaching TBF from MS object, TLLI = 0xf1000001, TBF = TBF(TFI=0 TLLI=0xf1000001 DIR=DL STATE=FLOW)
 Destroying MS object, TLLI = 0xf1000001
 ********** TBF ends here **********
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=0.
 ********** TBF starts here **********
@@ -446,7 +447,6 @@ Send dowlink assignment for TBF(TFI=0 TLLI=0xc0000000 DIR=DL STATE=NULL) on PCH,
 TBF(TFI=0 TLLI=0xc0000000 DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=0 TLLI=0xc0000000 DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 30 30 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 00 08 00 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=1.
 ********** TBF starts here **********
@@ -467,7 +467,6 @@ Send dowlink assignment for TBF(TFI=1 TLLI=0xc0000001 DIR=DL STATE=NULL) on PCH,
 TBF(TFI=1 TLLI=0xc0000001 DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=1 TLLI=0xc0000001 DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 30 31 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 00 18 40 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=2.
 ********** TBF starts here **********
@@ -488,7 +487,6 @@ Send dowlink assignment for TBF(TFI=2 TLLI=0xc0000002 DIR=DL STATE=NULL) on PCH,
 TBF(TFI=2 TLLI=0xc0000002 DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=2 TLLI=0xc0000002 DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 30 32 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 00 28 80 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=3.
 ********** TBF starts here **********
@@ -509,7 +507,6 @@ Send dowlink assignment for TBF(TFI=3 TLLI=0xc0000003 DIR=DL STATE=NULL) on PCH,
 TBF(TFI=3 TLLI=0xc0000003 DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=3 TLLI=0xc0000003 DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 30 33 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 00 38 c0 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=4.
 ********** TBF starts here **********
@@ -530,7 +527,6 @@ Send dowlink assignment for TBF(TFI=4 TLLI=0xc0000004 DIR=DL STATE=NULL) on PCH,
 TBF(TFI=4 TLLI=0xc0000004 DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=4 TLLI=0xc0000004 DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 30 34 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 00 49 00 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=5.
 ********** TBF starts here **********
@@ -551,7 +547,6 @@ Send dowlink assignment for TBF(TFI=5 TLLI=0xc0000005 DIR=DL STATE=NULL) on PCH,
 TBF(TFI=5 TLLI=0xc0000005 DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=5 TLLI=0xc0000005 DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 30 35 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 00 59 40 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=6.
 ********** TBF starts here **********
@@ -572,7 +567,6 @@ Send dowlink assignment for TBF(TFI=6 TLLI=0xc0000006 DIR=DL STATE=NULL) on PCH,
 TBF(TFI=6 TLLI=0xc0000006 DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=6 TLLI=0xc0000006 DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 30 36 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 00 69 80 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=7.
 ********** TBF starts here **********
@@ -593,7 +587,6 @@ Send dowlink assignment for TBF(TFI=7 TLLI=0xc0000007 DIR=DL STATE=NULL) on PCH,
 TBF(TFI=7 TLLI=0xc0000007 DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=7 TLLI=0xc0000007 DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 30 37 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 00 79 c0 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=8.
 ********** TBF starts here **********
@@ -614,7 +607,6 @@ Send dowlink assignment for TBF(TFI=8 TLLI=0xc0000008 DIR=DL STATE=NULL) on PCH,
 TBF(TFI=8 TLLI=0xc0000008 DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=8 TLLI=0xc0000008 DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 30 38 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 00 8a 00 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=9.
 ********** TBF starts here **********
@@ -635,7 +627,6 @@ Send dowlink assignment for TBF(TFI=9 TLLI=0xc0000009 DIR=DL STATE=NULL) on PCH,
 TBF(TFI=9 TLLI=0xc0000009 DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=9 TLLI=0xc0000009 DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 30 39 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 00 9a 40 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=10.
 ********** TBF starts here **********
@@ -656,7 +647,6 @@ Send dowlink assignment for TBF(TFI=10 TLLI=0xc000000a DIR=DL STATE=NULL) on PCH
 TBF(TFI=10 TLLI=0xc000000a DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=10 TLLI=0xc000000a DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 31 30 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 00 aa 80 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=11.
 ********** TBF starts here **********
@@ -677,7 +667,6 @@ Send dowlink assignment for TBF(TFI=11 TLLI=0xc000000b DIR=DL STATE=NULL) on PCH
 TBF(TFI=11 TLLI=0xc000000b DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=11 TLLI=0xc000000b DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 31 31 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 00 ba c0 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=12.
 ********** TBF starts here **********
@@ -698,7 +687,6 @@ Send dowlink assignment for TBF(TFI=12 TLLI=0xc000000c DIR=DL STATE=NULL) on PCH
 TBF(TFI=12 TLLI=0xc000000c DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=12 TLLI=0xc000000c DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 31 32 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 00 cb 00 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=13.
 ********** TBF starts here **********
@@ -719,7 +707,6 @@ Send dowlink assignment for TBF(TFI=13 TLLI=0xc000000d DIR=DL STATE=NULL) on PCH
 TBF(TFI=13 TLLI=0xc000000d DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=13 TLLI=0xc000000d DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 31 33 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 00 db 40 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=14.
 ********** TBF starts here **********
@@ -740,7 +727,6 @@ Send dowlink assignment for TBF(TFI=14 TLLI=0xc000000e DIR=DL STATE=NULL) on PCH
 TBF(TFI=14 TLLI=0xc000000e DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=14 TLLI=0xc000000e DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 31 34 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 00 eb 80 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=15.
 ********** TBF starts here **********
@@ -761,7 +747,6 @@ Send dowlink assignment for TBF(TFI=15 TLLI=0xc000000f DIR=DL STATE=NULL) on PCH
 TBF(TFI=15 TLLI=0xc000000f DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=15 TLLI=0xc000000f DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 31 35 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 00 fb c0 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=16.
 ********** TBF starts here **********
@@ -782,7 +767,6 @@ Send dowlink assignment for TBF(TFI=16 TLLI=0xc0000010 DIR=DL STATE=NULL) on PCH
 TBF(TFI=16 TLLI=0xc0000010 DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=16 TLLI=0xc0000010 DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 31 36 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 01 0c 00 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=17.
 ********** TBF starts here **********
@@ -803,7 +787,6 @@ Send dowlink assignment for TBF(TFI=17 TLLI=0xc0000011 DIR=DL STATE=NULL) on PCH
 TBF(TFI=17 TLLI=0xc0000011 DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=17 TLLI=0xc0000011 DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 31 37 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 01 1c 40 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=18.
 ********** TBF starts here **********
@@ -824,7 +807,6 @@ Send dowlink assignment for TBF(TFI=18 TLLI=0xc0000012 DIR=DL STATE=NULL) on PCH
 TBF(TFI=18 TLLI=0xc0000012 DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=18 TLLI=0xc0000012 DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 31 38 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 01 2c 80 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=19.
 ********** TBF starts here **********
@@ -845,7 +827,6 @@ Send dowlink assignment for TBF(TFI=19 TLLI=0xc0000013 DIR=DL STATE=NULL) on PCH
 TBF(TFI=19 TLLI=0xc0000013 DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=19 TLLI=0xc0000013 DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 31 39 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 01 3c c0 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=20.
 ********** TBF starts here **********
@@ -866,7 +847,6 @@ Send dowlink assignment for TBF(TFI=20 TLLI=0xc0000014 DIR=DL STATE=NULL) on PCH
 TBF(TFI=20 TLLI=0xc0000014 DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=20 TLLI=0xc0000014 DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 32 30 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 01 4d 00 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=21.
 ********** TBF starts here **********
@@ -887,7 +867,6 @@ Send dowlink assignment for TBF(TFI=21 TLLI=0xc0000015 DIR=DL STATE=NULL) on PCH
 TBF(TFI=21 TLLI=0xc0000015 DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=21 TLLI=0xc0000015 DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 32 31 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 01 5d 40 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=22.
 ********** TBF starts here **********
@@ -908,7 +887,6 @@ Send dowlink assignment for TBF(TFI=22 TLLI=0xc0000016 DIR=DL STATE=NULL) on PCH
 TBF(TFI=22 TLLI=0xc0000016 DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=22 TLLI=0xc0000016 DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 32 32 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 01 6d 80 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=23.
 ********** TBF starts here **********
@@ -929,7 +907,6 @@ Send dowlink assignment for TBF(TFI=23 TLLI=0xc0000017 DIR=DL STATE=NULL) on PCH
 TBF(TFI=23 TLLI=0xc0000017 DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=23 TLLI=0xc0000017 DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 32 33 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 01 7d c0 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=24.
 ********** TBF starts here **********
@@ -950,7 +927,6 @@ Send dowlink assignment for TBF(TFI=24 TLLI=0xc0000018 DIR=DL STATE=NULL) on PCH
 TBF(TFI=24 TLLI=0xc0000018 DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=24 TLLI=0xc0000018 DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 32 34 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 01 8e 00 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=25.
 ********** TBF starts here **********
@@ -971,7 +947,6 @@ Send dowlink assignment for TBF(TFI=25 TLLI=0xc0000019 DIR=DL STATE=NULL) on PCH
 TBF(TFI=25 TLLI=0xc0000019 DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=25 TLLI=0xc0000019 DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 32 35 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 01 9e 40 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=26.
 ********** TBF starts here **********
@@ -992,7 +967,6 @@ Send dowlink assignment for TBF(TFI=26 TLLI=0xc000001a DIR=DL STATE=NULL) on PCH
 TBF(TFI=26 TLLI=0xc000001a DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=26 TLLI=0xc000001a DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 32 36 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 01 ae 80 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=27.
 ********** TBF starts here **********
@@ -1013,7 +987,6 @@ Send dowlink assignment for TBF(TFI=27 TLLI=0xc000001b DIR=DL STATE=NULL) on PCH
 TBF(TFI=27 TLLI=0xc000001b DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=27 TLLI=0xc000001b DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 32 37 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 01 be c0 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=28.
 ********** TBF starts here **********
@@ -1034,7 +1007,6 @@ Send dowlink assignment for TBF(TFI=28 TLLI=0xc000001c DIR=DL STATE=NULL) on PCH
 TBF(TFI=28 TLLI=0xc000001c DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=28 TLLI=0xc000001c DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 32 38 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 01 cf 00 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=29.
 ********** TBF starts here **********
@@ -1055,7 +1027,6 @@ Send dowlink assignment for TBF(TFI=29 TLLI=0xc000001d DIR=DL STATE=NULL) on PCH
 TBF(TFI=29 TLLI=0xc000001d DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=29 TLLI=0xc000001d DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 32 39 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 01 df 40 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=30.
 ********** TBF starts here **********
@@ -1076,7 +1047,6 @@ Send dowlink assignment for TBF(TFI=30 TLLI=0xc000001e DIR=DL STATE=NULL) on PCH
 TBF(TFI=30 TLLI=0xc000001e DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=30 TLLI=0xc000001e DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 33 30 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 01 ef 80 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
  Found TFI=31.
 ********** TBF starts here **********
@@ -1097,7 +1067,6 @@ Send dowlink assignment for TBF(TFI=31 TLLI=0xc000001f DIR=DL STATE=NULL) on PCH
 TBF(TFI=31 TLLI=0xc000001f DIR=DL STATE=NULL) changes state from NULL to ASSIGN
 TX: START TBF(TFI=31 TLLI=0xc000001f DIR=DL STATE=ASSIGN) Immediate Assignment Downlink (PCH)
 Sending data request: trx=0 ts=0 sapi=3 arfcn=0 fn=0 block=0 data=30 33 31 2d 06 3f 30 0c 00 00 7d 80 00 00 00 dc 00 00 01 ff c0 23 2b 2b 2b 2b 
-TA unknown, assuming 0
 Searching for first unallocated TFI: TRX=0 first TS=4
 No TFI available.
 No PDCH resource
@@ -1129,6 +1098,7 @@ Got 'TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=FLOW)', TA=7
 UL DATA TFI=0 received (V(Q)=0 .. V(R)=0)
 Creating MS object, TLLI = 0x00000000
 Modifying MS object, UL TLLI: 0x00000000 -> 0xf1223344, not yet confirmed
+Modifying MS object, TLLI = 0xf1223344, TA 0 -> 7
 Attaching TBF to MS object, TLLI = 0xf1223344, TBF = TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=FLOW)
 Decoded premier TLLI=0xf1223344 of UL DATA TFI=0.
 TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=FLOW) restarting timer 3169 while old timer 3169 pending 
@@ -1147,7 +1117,7 @@ No bctx
 TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=FLOW) changes state from FLOW to FINISHED
 - Scheduling Ack/Nack, because TLLI is included.
 - Scheduling Ack/Nack, because last block has CV==0.
-Got MS: TLLI = 0xf1223344
+Got MS: TLLI = 0xf1223344, TA = 7
 Sending data request: trx=0 ts=7 sapi=5 arfcn=0 fn=2654218 block=8 data=47 94 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 
 MS requests UL TBF on RACH, so we provide one:
 MS requests single block allocation
@@ -1179,6 +1149,7 @@ TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=ASSIGN) starting timer 3169.
 Creating MS object, TLLI = 0x00000000
 Modifying MS object, UL TLLI: 0x00000000 -> 0xf1223344, not yet confirmed
 Attaching TBF to MS object, TLLI = 0xf1223344, TBF = TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=ASSIGN)
+Modifying MS object, TLLI = 0xf1223344, TA 0 -> 7
 Change control TS to 7 until assinment is complete.
 Got 'TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=ASSIGN)', TA=7
 TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=ASSIGN)s start Packet Uplink Assignment (PACCH)
@@ -1197,4 +1168,4 @@ TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=ASSIGN) restarting timer 3169 while old t
 TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=ASSIGN) complete UL frame that fits precisely in last block: len=20
 LLC [PCU -> SGSN] TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=ASSIGN) len=20
 No bctx
-Got MS: TLLI = 0xf1223344
+Got MS: TLLI = 0xf1223344, TA = 7