From a49b63ce5a0302d34fa1df4f76e59cd535ea1b9c Mon Sep 17 00:00:00 2001 From: Vadim Yanitskiy Date: Mon, 1 Oct 2018 17:38:27 +0700 Subject: 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 --- include/l1ctl_proto.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/l1ctl_proto.h') 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 { -- cgit v1.2.3