fixeria has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-bts/+/27756 ) Change subject: amr: check-in default multi-rate config from osmo-bsc ...................................................................... amr: check-in default multi-rate config from osmo-bsc This configuration will be used as a fall-back when the MultiRate configuration IE is not included in the CHAN ACT/MODIFY messages. Change-Id: I423d9953e9f65e49db599ea72197c2a0c5999271 Related: osmo-bsc.git Ic5f8d55d250976d8d4c9cae2d89480fd52326717 Related: SYS#5917, OS#4984 --- M src/common/amr.c 1 file changed, 79 insertions(+), 0 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-bts refs/changes/56/27756/1 diff --git a/src/common/amr.c b/src/common/amr.c index 837757f..8545d58 100644 --- a/src/common/amr.c +++ b/src/common/amr.c @@ -6,6 +6,85 @@ #include <osmo-bts/logging.h> #include <osmo-bts/amr.h> +/* Reasonable defaults for AMR-FR and AMR-HR rate configuration. + * The values are taken from 3GPP TS 51.010-1 (version 13.11.0). + * See 14.2.19.4.1 and 14.2.20.4.1 for AMR-FR and AMR-HR, respectively. + * + * ^ C/I (dB) | FR / HR | + * | | + * | | + * MODE4 | | + * = | ----+---- THR_MX_Up(3) | 20.5 / 18.0 | + * | | | + * | = ----+---- THR_MX_Dn(4) | 18.5 / 16.0 | + * MODE3 | | + * | = ----+---- THR_MX_Up(2) | 14.5 / 14.0 | + * | | | + * = | ----+---- THR_MX_Dn(3) | 12.5 / 12.0 | + * MODE2 | | + * = | ----+---- THR_MX_Up(1) | 8.5 / 10.0 | + * | | | + * | = ----+---- THR_MX_Dn(2) | 6.5 / 8.0 | + * MODE1 | | + * | | + * | | + */ +static const struct gsm48_multi_rate_conf amr_fr_mr_cfg_def = { + .m4_75 = 1, + .m5_90 = 1, + .m7_95 = 1, + .m12_2 = 1, +}; +static const struct amr_mode amr_fr_bts_mode_def[] = { + { + .mode = 0, /* 4.75k */ + .threshold = 13, /* THR_MX_Dn(2): 6.5 dB */ + .hysteresis = 4, /* THR_MX_Up(1): 8.5 dB */ + }, + { + .mode = 2, /* 5.90k */ + .threshold = 25, /* THR_MX_Dn(3): 12.5 dB */ + .hysteresis = 4, /* THR_MX_Up(2): 14.5 dB */ + }, + { + .mode = 5, /* 7.95k */ + .threshold = 37, /* THR_MX_Dn(4): 18.5 dB */ + .hysteresis = 4, /* THR_MX_Up(3): 20.5 dB */ + }, + { + .mode = 7, /* 12.2k */ + /* this is the last mode, so no threshold */ + }, +}; + +static const struct gsm48_multi_rate_conf amr_hr_mr_cfg_def = { + .m4_75 = 1, + .m5_90 = 1, + .m6_70 = 1, + .m7_95 = 1, +}; +static const struct amr_mode amr_hr_bts_mode_def[] = { + { + .mode = 0, /* 4.75k */ + .threshold = 16, /* THR_MX_Dn(2): 8.0 dB */ + .hysteresis = 4, /* THR_MX_Up(1): 10.0 dB */ + }, + { + .mode = 2, /* 5.90k */ + .threshold = 24, /* THR_MX_Dn(3): 12.0 dB */ + .hysteresis = 4, /* THR_MX_Up(2): 14.0 dB */ + }, + { + .mode = 3, /* 6.70k */ + .threshold = 32, /* THR_MX_Dn(4): 16.0 dB */ + .hysteresis = 4, /* THR_MX_Up(3): 18.0 dB */ + }, + { + .mode = 5, /* 7.95k */ + /* this is the last mode, so no threshold */ + }, +}; + void amr_log_mr_conf(int ss, int logl, const char *pfx, struct amr_multirate_conf *amr_mrc) { -- To view, visit https://gerrit.osmocom.org/c/osmo-bts/+/27756 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: osmo-bts Gerrit-Branch: master Gerrit-Change-Id: I423d9953e9f65e49db599ea72197c2a0c5999271 Gerrit-Change-Number: 27756 Gerrit-PatchSet: 1 Gerrit-Owner: fixeria &lt;vyanitskiy(a)sysmocom.de&gt; Gerrit-MessageType: newchange