Review at https://gerrit.osmocom.org/6972
l1sap: Add fields for higher-precision timing offset values
So far, we used quarter-bits across the L1SAP between the hardware/PHY
specific part of OsmoBTS and the common part. In order to increase
the resolution, let's add fields/members for 1/256th bit.
In order to keep ABI and API compatibility, we use a union around the
old and new values, so old code will still compile + work withe new
libosmocore.
Change-Id: Ibb58113c2819fe2d6d23ecbcfb8b3fce4055025d
---
M include/osmocom/gsm/l1sap.h
1 file changed, 8 insertions(+), 2 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/libosmocore refs/changes/72/6972/1
diff --git a/include/osmocom/gsm/l1sap.h b/include/osmocom/gsm/l1sap.h
index 18ad7d2..9a9c008 100644
--- a/include/osmocom/gsm/l1sap.h
+++ b/include/osmocom/gsm/l1sap.h
@@ -77,7 +77,10 @@
uint32_t fn; /*!< GSM Frame Number */
int8_t rssi; /*!< RSSI of receivedindication */
uint16_t ber10k; /*!< BER in units of 0.01% */
- int16_t ta_offs_qbits; /* !< Burst TA Offset in quarter bits */
+ union {
+ int16_t ta_offs_qbits; /* !< Burst TA Offset in quarter bits */
+ int16_t ta_offs_256bits;/*!< timing advance offset (in 1/256th
bits) */
+ };
int16_t lqual_cb; /* !< Link quality in centiBel */
enum osmo_ph_pres_info_type pdch_presence_info; /*!< Info regarding
presence/validity of header and data parts */
};
@@ -107,7 +110,10 @@
uint8_t chan_nr; /*!< Channel Number (Like RSL) */
uint32_t fn; /*!< GSM Frame Number */
uint16_t ber10k; /*!< BER in units of 0.01% */
- int16_t ta_offs_qbits; /*!< timing advance offset (in qbits) */
+ union {
+ int16_t ta_offs_qbits; /*!< timing advance offset (in qbits) */
+ int16_t ta_offs_256bits;/*!< timing advance offset (in 1/256th
bits) */
+ };
int16_t c_i_cb; /*!< C/I ratio in 0.1 dB */
uint8_t is_sub:1; /*!< flags */
uint8_t inv_rssi; /*!< RSSI in dBm * -1 */
--
To view, visit https://gerrit.osmocom.org/6972
To unsubscribe, visit https://gerrit.osmocom.org/settings
Gerrit-MessageType: newchange
Gerrit-Change-Id: Ibb58113c2819fe2d6d23ecbcfb8b3fce4055025d
Gerrit-PatchSet: 1
Gerrit-Project: libosmocore
Gerrit-Branch: master
Gerrit-Owner: Harald Welte <lafo...@gnumonks.org>
