include/osmocom/gsm/gsm0502.h

   1 #ifndef OSMOCOM_GSM_0502_H
   2 #define OSMOCOM_GSM_0502_H
   3
   4 #include <stdint.h>
   5
   6 #include <osmocom/gsm/protocol/gsm_04_08.h>
   7 #include <osmocom/gsm/protocol/gsm_08_58.h>
   8
   9 /* Table 5 Clause 7 TS 05.02 */
  10 static inline unsigned int
  11 gsm0502_get_n_pag_blocks(struct gsm48_control_channel_descr *chan_desc)
  12 {
  13         if (chan_desc->ccch_conf == RSL_BCCH_CCCH_CONF_1_C)
  14                 return 3 - chan_desc->bs_ag_blks_res;
  15         else
  16                 return 9 - chan_desc->bs_ag_blks_res;
  17 }
  18
  19 /* Chapter 6.5.2 of TS 05.02 */
  20 static inline unsigned int
  21 gsm0502_get_ccch_group(uint64_t imsi, unsigned int bs_cc_chans,
  22                         unsigned int n_pag_blocks)
  23 {
  24         return (imsi % 1000) % (bs_cc_chans * n_pag_blocks) / n_pag_blocks;
  25 }
  26
  27 /* Chapter 6.5.2 of TS 05.02 */
  28 static inline unsigned int
  29 gsm0502_get_paging_group(uint64_t imsi, unsigned int bs_cc_chans,
  30                          int n_pag_blocks)
  31 {
  32         return (imsi % 1000) % (bs_cc_chans * n_pag_blocks) % n_pag_blocks;
  33 }
  34
  35 unsigned int
  36 gsm0502_calc_paging_group(struct gsm48_control_channel_descr *chan_desc, uint64_t imsi);
  37
  38 #endif