Posts

LTE Basic Call Flow

MIB/SIB Info

What are the main contents of MIB/all SIBs in LTE system? Details: As per specification 36.331: Master Information Block(MIB): SFN, PHICH configuration, DL System bandwidth (in terms of resource blocks i.e. 25 for 5MHz, 50 for 10MHz and 100 for 20MHz) System Information Block1 (SIB1): Cell Id, Tracking Area Code, Cell Barred Status, Value Tag, PLMN Info, System Information(SI) window Length, SIB Mapping, SI Periodicity, Freq Band Indicator System Information Block2 (SIB2): RACH configuration Parameter (Power Ramping, Number of RA preambles, modification Period Coefficient, UE Timer and Constants, Timing Advance Value, Access Class Barring, UL EARCN, UL Bandwidth, System Information Block3 (SIB3): Cell Reselection Related Parameters (including QHyst, Cell Reselection Priority, Q-RxLevMin, Speed dependent scaling factor), Cell Reselection parameters that are common for interFreq and interRAT. System Information Block4 (SIB4): Intra Freq Cell Re

MAP Protocol Error codes and Supplementary Service codes

MAP Protocol Error codes and Supple Service codes  MAP Protocol Error Codes  Generic errors     34 System failure     35 Data Missing     36 Unexpected Data Value     21 Facility Not Supported     28 Incompatible Terminal     51 Resource Limitation  Identification and Numbering Errors     01 Unknown Subscriber     144 Number Changed     03 Unknown MSC     05 Unidentified Subscriber     07 Unknown Equipment  Subscription Errors     08 Roaming Not Allowed     09 Illegal Subscriber     12 Illegal Equipment     10 Bearer Service Not Provisioned     11 Teleservice Not Provisioned Handover Errors     25 No Handover Number Available     26 Subsequent Handover Failure     42 Target Cell Outside GroupCall Area     Operation and Maintenance Errors     40 tracingBufferFull Call Handling Errors     39 No Roaming Number Available     27 Absent Subscriber     45 Busy Subscriber

WCDMA MO Call

WCDMA MO CALL 1. [0x7B3A/005/036] OTA LOG MM/CM Service Request      Direction : MS To Network chan_type = 0 (0x0) prot_disc_check = 5 (0x5) trans_id_or_skip_ind = 0 (0x0) prot_disc = 5 (0x5) (GSM_MOB_MANAGEMENT) msg_type = 36 (0x24) prot mob_man_prot CM_SERVICE_REQUEST cip_key_seq_num key_sequence = 0 (0x0) cm_serv serv_type = 1 (0x1) 2. [0x7B3A/003/005] OTA LOG CC/Setup Direction : MS To Network chan_type = 0 (0x0) prot_disc_check = 3 (0x3) trans_id_or_skip_ind = 0 (0x0) prot_disc = 3 (0x3) (GSM_CALL_CONTROL) msg_type = 5 (0x5) prot call_ctrl_prot SETUP num_digits = 10 (0xa) digits[0] = 8 (0x8) digits[1] = 1 (0x1) digits[2] = 4 (0x4) digits[3] = 2 (0x2) digits[4] = 4 (0x4) digits[5] = 2 (0x2) digits[6] = 6 (0x6) digits[7] = 4 (0x4) digits[8] = 6 (0x6) digits[9] = 9 (0x9)     3. [0x7B3A/003/002] OTA LOG CC/Call Proceeding Direction : Network To MS chan_type = 0 (0x0) prot_disc_check = 3 (0x3) trans