diff options
| author | Philipp Maier <pmaier@sysmocom.de> | 2017-04-19 17:17:55 +0200 |
|---|---|---|
| committer | Philipp Maier <pmaier@sysmocom.de> | 2017-05-17 14:42:00 +0200 |
| commit | e3de64cd67bedbc024d31a3866fc45027dd0dd0d (patch) | |
| tree | fac8eabfdd9a43d699a24c126803a21c00cfb351 /src/common | |
| parent | 22704a88e2caa28a231d6f4f4fbb6181fab48e93 (diff) | |
measurement/cosmetic: Fixup source code comment
the function is_meas_complete() uses the *_meas_rep_fn104[]
lookup tables, defined at the beginning of the source file.
These lookup tabels contain a lot of magic numbers. This
commit adds a more elaborated comment with a reference
to the specification/section in order make the values
understandable.
Change-Id: Ic6e4037f965772e6b851c67662d5e7bf64cc04eb
Diffstat (limited to 'src/common')
| -rw-r--r-- | src/common/measurement.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/src/common/measurement.c b/src/common/measurement.c index 0814bf10..80764133 100644 --- a/src/common/measurement.c +++ b/src/common/measurement.c @@ -8,7 +8,21 @@ #include <osmo-bts/logging.h> #include <osmo-bts/measurement.h> -/* TS 05.08, Chapter 8.4.1 */ +/* Measurment reporting period and mapping of SACCH message block for TCHF + * and TCHH chan As per in 3GPP TS 45.008, secton 8.4.1. + * + * Timeslot number (TN) TDMA frame number (FN) modulo 104 + * Half rate, Half rate, Reporting SACCH + * Full Rate subch.0 subch.1 period Message block + * 0 0 and 1 0 to 103 12, 38, 64, 90 + * 1 0 and 1 13 to 12 25, 51, 77, 103 + * 2 2 and 3 26 to 25 38, 64, 90, 12 + * 3 2 and 3 39 to 38 51, 77, 103, 25 + * 4 4 and 5 52 to 51 64, 90, 12, 38 + * 5 4 and 5 65 to 64 77, 103, 25, 51 + * 6 6 and 7 78 to 77 90, 12, 38, 64 + * 7 6 and 7 91 to 90 103, 25, 51, 77 */ + /* measurement period ends at fn % 104 == ? */ static const uint8_t tchf_meas_rep_fn104[] = { [0] = 103, |