diff options
| author | Andreas Eversberg <jolly@eversberg.eu> | 2013-12-11 16:25:33 +0100 |
|---|---|---|
| committer | Harald Welte <laforge@gnumonks.org> | 2019-05-23 13:03:42 +0200 |
| commit | 854e526de205de1493770b91c27e4d00a65a6173 (patch) | |
| tree | da7f5be0f0181af1df8058de790a994d88608f9b /src/target | |
| parent | 4fa1e68ebcf4dd3ac874f8ed1bbbea096e29a6fc (diff) | |
[WIP] HO: Transmit access bursts on DCCH of TCH channels
Change-Id: I1a972d9bac5749c67c1b139825400854f7cf1490
Diffstat (limited to 'src/target')
| -rw-r--r-- | src/target/firmware/layer1/prim_rach.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/src/target/firmware/layer1/prim_rach.c b/src/target/firmware/layer1/prim_rach.c index eeb0435f..d7f7c148 100644 --- a/src/target/firmware/layer1/prim_rach.c +++ b/src/target/firmware/layer1/prim_rach.c @@ -131,7 +131,7 @@ static uint8_t rach_to_t3_comb[27] = { 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 45, 46}; -/* request a RACH request at the next multiframe T3 = fn51 */ +/* schedule access burst */ void l1a_rach_req(uint16_t offset, uint8_t combined, uint8_t ra) { uint32_t fn_sched; @@ -144,7 +144,19 @@ void l1a_rach_req(uint16_t offset, uint8_t combined, uint8_t ra) } local_firq_save(flags); - if (combined) { + if (l1s.dedicated.type == GSM_DCHAN_TCH_F) { + fn_sched = l1s.current_time.fn + offset; + /* go next DCCH frame TCH/F channel */ + if ((fn_sched % 13) == 12) + fn_sched++; + } else if (l1s.dedicated.type == GSM_DCHAN_TCH_H) { + fn_sched = l1s.current_time.fn + offset; + /* go next DCCH frame of TCH/H channel */ + if ((fn_sched % 13) == 12) + fn_sched++; + if ((l1s.dedicated.chan_nr & 1) != ((fn_sched % 13) & 1)) + fn_sched++; + } else if (combined) { /* add elapsed RACH slots to offset */ offset += t3_to_rach_comb[l1s.current_time.t3]; /* offset is the number of RACH slots in the future */ @@ -154,6 +166,7 @@ void l1a_rach_req(uint16_t offset, uint8_t combined, uint8_t ra) } else fn_sched = l1s.current_time.fn + offset; l1s.rach.ra = ra; + fn_sched %= 2715648; sched_gsmtime(rach_sched_set_ul, fn_sched, 0); local_irq_restore(flags); |