diff options
Diffstat (limited to 'src/gsm/sysinfo.c')
| -rw-r--r-- | src/gsm/sysinfo.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/gsm/sysinfo.c b/src/gsm/sysinfo.c index 42e717fe..3ec54448 100644 --- a/src/gsm/sysinfo.c +++ b/src/gsm/sysinfo.c @@ -144,6 +144,30 @@ int osmo_earfcn_add(struct osmo_earfcn_si2q *e, uint16_t arfcn, uint8_t meas_bw) return -ENOMEM; } +/*! \brief Return number of bits necessary to represent earfcn struct as + * Repeated E-UTRAN Neighbour Cells IE from 3GPP TS 44.018 Table 10.5.2.33b.1 + * \param[in,out] e earfcn struct + * \returns number of bits + */ +size_t osmo_earfcn_bit_size(const struct osmo_earfcn_si2q *e) +{ + /* 1 stop bit + 5 bits for THRESH_E-UTRAN_high */ + size_t i, bits = 6; + for (i = 0; i < e->length; i++) { + if (e->arfcn[i] != OSMO_EARFCN_INVALID) { + bits += 17; + if (OSMO_EARFCN_MEAS_INVALID == e->meas_bw[i]) + bits++; + else + bits += 4; + } + } + bits += (e->prio_valid) ? 4 : 1; + bits += (e->thresh_lo_valid) ? 6 : 1; + bits += (e->qrxlm_valid) ? 6 : 1; + return bits; +} + /*! \brief Delete arfcn (and corresponding measurement bandwith) from earfcn * struct * \param[in,out] e earfcn struct |