diff options
| author | Philipp Maier <pmaier@sysmocom.de> | 2019-10-09 13:38:38 +0200 |
|---|---|---|
| committer | laforge <laforge@osmocom.org> | 2019-10-28 19:43:14 +0000 |
| commit | 69e00ccd6ff3a19b771070b78ed3d85dd219799f (patch) | |
| tree | bf4914255ba3a4491423bd7e06f8f4efda1953ef /include/osmocom/gsm | |
| parent | a0c8195ad37292ab800a6c777fc28383995b4b64 (diff) | |
gsm0508: add functions to calculate beginning of a block
The calculation of the beginning of a block for TCH/F, TCH/H and FACCH
can be challenging since those channels are affected by the diagonal
interleaving of the TCH channels. However, GSM 05.02 Section 7 Table 1
of 5 specifies how the blocks are distributed over the TDMA frame
interval. Lets add a mapping function that is based on that table
Related: OS#3803
Change-Id: I3d71c66f8c401f5afbad9b1c86c24580dab9e0ce
Diffstat (limited to 'include/osmocom/gsm')
| -rw-r--r-- | include/osmocom/gsm/gsm0502.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/osmocom/gsm/gsm0502.h b/include/osmocom/gsm/gsm0502.h index fe5cf7e1..c9901dfd 100644 --- a/include/osmocom/gsm/gsm0502.h +++ b/include/osmocom/gsm/gsm0502.h @@ -35,3 +35,15 @@ gsm0502_get_paging_group(uint64_t imsi, unsigned int bs_cc_chans, unsigned int gsm0502_calc_paging_group(struct gsm48_control_channel_descr *chan_desc, uint64_t imsi); + +enum gsm0502_fn_remap_channel { + FN_REMAP_TCH_F, + FN_REMAP_TCH_H0, + FN_REMAP_TCH_H1, + FN_REMAP_FACCH_F, + FN_REMAP_FACCH_H0, + FN_REMAP_FACCH_H1, + FN_REMAP_MAX, +}; + +uint32_t gsm0502_fn_remap(uint32_t fn, enum gsm0502_fn_remap_channel channel); |