diff options
| author | Vadim Yanitskiy <vyanitskiy@sysmocom.de> | 2022-04-08 19:05:37 +0300 |
|---|---|---|
| committer | Vadim Yanitskiy <vyanitskiy@sysmocom.de> | 2022-04-08 19:05:45 +0300 |
| commit | dd7bed3415a452ee80a082750b7acd41659ab9a9 (patch) | |
| tree | df67b20c40d10d43da51226a5186eb07676697e5 | |
| parent | 94806cee7bc21c13cbe0fb5d0b8a8c890c8ae1d3 (diff) | |
osmo-bts-trx: rx_tchf_fn(): clarify indexes in the AMR CMI lookup table
Change-Id: If81ff0bd449fe20da43cc3d96dadf38568507054
Related: SYS#5916
| -rw-r--r-- | src/osmo-bts-trx/sched_lchan_tchf.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/src/osmo-bts-trx/sched_lchan_tchf.c b/src/osmo-bts-trx/sched_lchan_tchf.c index 9e88ce9e..f886e594 100644 --- a/src/osmo-bts-trx/sched_lchan_tchf.c +++ b/src/osmo-bts-trx/sched_lchan_tchf.c @@ -45,11 +45,18 @@ #include <sched_utils.h> #include <loops.h> -/* 3GPP TS 45.009, table 3.2.1.3-{1,3}: AMR on Uplink TCH/F */ +/* 3GPP TS 45.009, table 3.2.1.3-{1,3}: AMR on Uplink TCH/F. + * + * +---+---+---+---+---+---+---+---+ + * | a | b | c | d | e | f | g | h | Burst 'a' received first + * +---+---+---+---+---+---+---+---+ + * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Speech/FACCH frame (bursts 'a' .. 'h') + * + * TDMA frame number of burst 'h' is always used as the table index. */ static const uint8_t sched_tchf_ul_amr_cmi_map[26] = { - [7] = 1, /* TCH/F: first=0 / last=7 */ - [16] = 1, /* TCH/F: first=8 / last=16 */ - [24] = 1, /* TCH/F: first=17 / last=24 */ + [7] = 1, /* TCH/F: a=0 / h=7 */ + [16] = 1, /* TCH/F: a=8 / h=16 */ + [24] = 1, /* TCH/F: a=17 / h=24 */ }; /*! \brief a single TCH/F burst was received by the PHY, process it */ |