diff options
Diffstat (limited to 'src/encoding.cpp')
| -rw-r--r-- | src/encoding.cpp | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/src/encoding.cpp b/src/encoding.cpp index 22da6abc..0a4050fa 100644 --- a/src/encoding.cpp +++ b/src/encoding.cpp @@ -897,7 +897,15 @@ static void write_packet_uplink_ack_gprs( bitvec_write_field(dest, &wp, 0, 1); // 0: don't have CONTENTION_RESOLUTION_TLLI } - bitvec_write_field(dest, &wp, 0, 1); // 0: don't have Packet Timing Advance + if (gsm48_ta_is_valid(tbf->ta())) { + bitvec_write_field(dest, &wp, 1, 1); // 1: have Packet Timing Advance IE (TS 44.060 12.12) + bitvec_write_field(dest, &wp, 1, 1); // 1: have TIMING_ADVANCE_VALUE + bitvec_write_field(dest, &wp, tbf->ta(), 6); // TIMING_ADVANCE_VALUE + bitvec_write_field(dest, &wp, 0, 1); // 0: don't have TIMING_ADVANCE_INDEX + } else { + bitvec_write_field(dest, &wp, 0, 1); // 0: don't have Packet Timing Advance + } + bitvec_write_field(dest, &wp, 0, 1); // 0: don't have Power Control Parameters bitvec_write_field(dest, &wp, 0, 1); // 0: don't have Extension Bits bitvec_write_field(dest, &wp, 0, 1); // fixed 0 @@ -1085,7 +1093,16 @@ static void write_packet_uplink_ack_egprs( } bitvec_write_field(dest, &wp, 1, 1); // TBF_EST (enabled) - bitvec_write_field(dest, &wp, 0, 1); // 0: don't have Packet Timing Advance + + if (gsm48_ta_is_valid(tbf->ta())) { + bitvec_write_field(dest, &wp, 1, 1); // 1: have Packet Timing Advance IE (TS 44.060 12.12) + bitvec_write_field(dest, &wp, 1, 1); // 1: have TIMING_ADVANCE_VALUE + bitvec_write_field(dest, &wp, tbf->ta(), 6); // TIMING_ADVANCE_VALUE + bitvec_write_field(dest, &wp, 0, 1); // 0: don't have TIMING_ADVANCE_INDEX + } else { + bitvec_write_field(dest, &wp, 0, 1); // 0: don't have Packet Timing Advance + } + bitvec_write_field(dest, &wp, 0, 1); // 0: don't have Packet Extended Timing Advance bitvec_write_field(dest, &wp, 0, 1); // 0: don't have Power Control Parameters bitvec_write_field(dest, &wp, 0, 1); // 0: don't have Extension Bits |