dexter has uploaded this change for review. (
https://gerrit.osmocom.org/c/libosmo-abis/+/30747 )
Change subject: trau_sync: add Ericsson RBS GPRS TRAU synchronization pattern
(64kbps)
......................................................................
trau_sync: add Ericsson RBS GPRS TRAU synchronization pattern (64kbps)
For GPRS TRAU frames (Ericsson calls them GSL frames), ericsson introduces
a propritary synchronization pattern. There are different patterns used
for synchronization, data frames with coding schemes CS1-4 and MCS1-8
share a slightly different pattern than the one that is used for
synchronization but the intersection between both patterns still
provides reliable synchronization. There is also a third pattern for
MCS9 that is not included in this patch.
Change-Id: I9d62089db557d37c924cc42fc8e3b608000ef4be
Related: OS#5198
---
M include/osmocom/trau/trau_sync.h
M src/trau/trau_sync.c
2 files changed, 49 insertions(+), 0 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/libosmo-abis refs/changes/47/30747/1
diff --git a/include/osmocom/trau/trau_sync.h b/include/osmocom/trau/trau_sync.h
index a912db6..512b749 100644
--- a/include/osmocom/trau/trau_sync.h
+++ b/include/osmocom/trau/trau_sync.h
@@ -13,6 +13,7 @@
OSMO_TRAU_SYNCP_8_AMR_7K4,
OSMO_TRAU_SYNCP_V110,
OSMO_TRAU_SYNCP_16_ER_CCU,
+ OSMO_TRAU_SYNCP_64_ER_CCU,
};
typedef void (*frame_out_cb_t)(void *user_data, const ubit_t *bits, unsigned
int num_bits);
diff --git a/src/trau/trau_sync.c b/src/trau/trau_sync.c
index 83c7903..4835f85 100644
--- a/src/trau/trau_sync.c
+++ b/src/trau/trau_sync.c
@@ -176,6 +176,54 @@
},
.byte_len = 40,
},
+ [OSMO_TRAU_SYNCP_64_ER_CCU] = {
+ .name = "Ericsson CCU 64 kbps",
+ .byte_pattern = {
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ },
+ .byte_mask = {
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ },
+ .byte_len = 160,
+ },
};
static void expand_sync_pattern(struct sync_pattern *pat)
--
To view, visit https://gerrit.osmocom.org/c/libosmo-abis/+/30747
To unsubscribe, or for help writing mail filters, visit
https://gerrit.osmocom.org/settings
Gerrit-Project: libosmo-abis
Gerrit-Branch: master
Gerrit-Change-Id: I9d62089db557d37c924cc42fc8e3b608000ef4be
Gerrit-Change-Number: 30747
Gerrit-PatchSet: 1
Gerrit-Owner: dexter <[email protected]>
Gerrit-MessageType: newchange
