osmocom
/
libosmocore
mirror of https://gerrit.osmocom.org/libosmocore
11
0
Fork 0
Code Issues Releases Wiki Activity

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
This commit is contained in:
Harald Welte 2018-02-27 17:30:08 +01:00
parent a57f90c80b
commit 38c902b776
1 changed files with 8 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
include/osmocom/gsm/l1sap.h
View File

@ -77,7 +77,10 @@ struct ph_data_param {
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 @@ struct info_meas_ind_param {
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 */