diff options
| author | Vadim Yanitskiy <axilirator@gmail.com> | 2018-10-01 17:38:27 +0700 |
|---|---|---|
| committer | Harald Welte <laforge@gnumonks.org> | 2018-10-03 08:37:11 +0000 |
| commit | a49b63ce5a0302d34fa1df4f76e59cd535ea1b9c (patch) | |
| tree | da31e9b180c25dd52f330cef867bbea914602d4a /include | |
| parent | d2807f4885f20642f52453d36ed48c292ba0a3cb (diff) | |
l1ctl_proto.h: extend ccch_mode enum with CBCH
According to GSM TS 05.02, there are two ways to enable CBCH:
a) replace sub-slot number 2 of CCCH+SDCCH/4 (comb. V),
b) replace sub-slot number 2 of SDCCH/8 (comb. VII).
Unlike SDCCH/8 (case b), CCCH+SDCCH/4 can be allocated on TS0
only, and shall not use frequency hopping. This means that
implementing CBCH support on SDCCH/8 would require much more
efforts than on combined CCCH+SDCCH/4, as in last case CBCH
messages can be received without the need to switch from
idle to dedicated mode.
This change introduces a new ccch_mode item, which should be
used by the higher layers to indicate presence of CBCH channel
on C0/TS0, so the PHY would enable decoding of CBCH messages
on CCCH+SDCCH/4 (case a) in idle mode.
Regarding to CBCH on SDCCH/8 (case b), it makes sense to
extend the 'l1ctl_dm_est_req', so it would be handled in
dedicated mode on request from the higher layers.
Change-Id: Ia94ebf22a2ec439dfe1f31d703b832ae57b48ef2
Diffstat (limited to 'include')
| -rw-r--r-- | include/l1ctl_proto.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/l1ctl_proto.h b/include/l1ctl_proto.h index 9d548bc4..f1bff860 100644 --- a/include/l1ctl_proto.h +++ b/include/l1ctl_proto.h @@ -70,6 +70,7 @@ enum ccch_mode { CCCH_MODE_NONE = 0, CCCH_MODE_NON_COMBINED, CCCH_MODE_COMBINED, + CCCH_MODE_COMBINED_CBCH, }; enum neigh_mode { |