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authorVadim Yanitskiy <axilirator@gmail.com>2018-10-01 17:38:27 +0700
committerHarald Welte <laforge@gnumonks.org>2018-10-03 08:37:11 +0000
commita49b63ce5a0302d34fa1df4f76e59cd535ea1b9c (patch)
treeda31e9b180c25dd52f330cef867bbea914602d4a /include/l1ctl_proto.h
parentd2807f4885f20642f52453d36ed48c292ba0a3cb (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/l1ctl_proto.h')
-rw-r--r--include/l1ctl_proto.h1
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 {