| /* TITAN REW encode/decode definitions for 3GPP TS 44.060 RLC/MAC Blocks */ |
| module RLCMAC_Types { |
| import from General_Types all; |
| import from Osmocom_Types all; |
| import from GSM_Types all; |
| |
| /* TS 44.060 10.4.7 */ |
| type enumerated MacPayloadType { |
| MAC_PT_RLC_DATA ('00'B), |
| MAC_PT_RLCMAC_NO_OPT ('01'B), |
| MAC_PT_RLCMAC_OPT ('10'B), |
| MAC_PT_RESERVED ('11'B) |
| } with { variant "FIELDLENGTH(2)" }; |
| |
| /* TS 44.060 10.4.5 */ |
| type enumerated MacRrbp { |
| RRBP_Nplus13_mod_2715648 ('00'B), |
| RRBP_Nplus17_or_18_mod_2715648 ('01'B), |
| RRBP_Nplus22_or_22_mod_2715648 ('10'B), |
| RRBP_Nplus26_mod_2715648 ('11'B) |
| } with { variant "FIELDLENGTH(2)" }; |
| |
| /* Partof DL RLC data block and DL RLC/MAC ctrl block */ |
| type record DlMacHeader { |
| MacPayloadType payload_type, |
| MacRrbp rrbp, |
| boolean rrbp_valid, |
| uint3_t usf |
| } with { |
| variant (rrbp_valid) "FIELDLENGTH(1)" |
| }; |
| |
| /* TS 44.060 10.4.10a */ |
| type enumerated PowerReduction { |
| PWR_RED_0_to_3dB ('00'B), |
| PWR_RED_3_to_7dB ('01'B), |
| PWR_RED_7_to_10dB ('10'B), |
| PWR_RED_RESERVED ('11'B) |
| } with { variant "FIELDLENGTH(2)" }; |
| |
| /* TS 44.060 10.4.9d */ |
| type enumerated DirectionBit { |
| DIR_UPLINK_TBF ('0'B), |
| DIR_DOWNLINK_TBF ('1'B) |
| } with { variant "FIELDLENGTH(1)" }; |
| |
| type record TfiOctet { |
| /* PR, TFI, D */ |
| PowerReduction pr, |
| uint5_t tfi, |
| DirectionBit d |
| } with { variant "" }; |
| |
| type record RbsnExtOctet { |
| uint3_t rbsn_e, |
| BIT1 fs_e, |
| BIT4 spare |
| } with { variant "" }; |
| |
| type record DlCtrlOptOctets { |
| /* RBSN, RTI, FS, AC (optional, depending on mac_hdr.payload_type) */ |
| BIT1 rbsn, |
| uint5_t rti, |
| boolean fs, |
| boolean tfi_octet_present, |
| TfiOctet tfi optional, |
| RbsnExtOctet rbsn_ext optional |
| } with { |
| variant (fs) "FIELDLENGTH(1)" |
| variant (tfi_octet_present) "FIELDLENGTH(1)" |
| variant (tfi) "PRESENCE(tfi_octet_present = true)" |
| variant (rbsn_ext) "PRESENCE(rbsn='1'B, fs=false)" |
| }; |
| |
| /* TS 44.060 10.3.1 Downlink RLC/MAC control block */ |
| type record RlcmacDlCtrlBlock { |
| DlMacHeader mac_hdr, |
| DlCtrlOptOctets opt optional, |
| octetstring payload |
| } with { |
| variant (opt) "PRESENCE(mac_hdr.payload_type = MAC_PT_RLCMAC_OPT)" |
| }; |
| |
| external function enc_RlcmacDlCtrlBlock(in RlcmacDlCtrlBlock si) return octetstring |
| with { extension "prototype(convert) encode(RAW)" }; |
| external function dec_RlcmacDlCtrlBlock(in octetstring stream) return RlcmacDlCtrlBlock |
| with { extension "prototype(convert) decode(RAW)" }; |
| |
| type record UlMacCtrlHeader { |
| MacPayloadType pt, |
| BIT5 spare, |
| boolean retry |
| } with { variant (retry) "FIELDLENGTH(1)" }; |
| |
| /* TS 44.060 10.3.2 UplinkRLC/MAC control block */ |
| type record RlcmacUlCtrlBlock { |
| UlMacCtrlHeader mac_hdr, |
| octetstring payload |
| } with { variant "" }; |
| |
| external function enc_RlcmacUlCtrlBlock(in RlcmacUlCtrlBlock si) return octetstring |
| with { extension "prototype(convert) encode(RAW)" }; |
| external function dec_RlcmacUlCtrlBlock(in octetstring stream) return RlcmacUlCtrlBlock |
| with { extension "prototype(convert) decode(RAW)" }; |
| |
| /* a single RLC block / LLC-segment */ |
| type record LlcBlockHdr { |
| uint6_t length_ind, |
| /* 1 = new LLC PDU starts */ |
| BIT1 more, |
| /* 0 = another extension octet after LLC PDU, 1 = no more extension octets */ |
| boolean e |
| } with { |
| variant (e) "FIELDLENGTH(1)" |
| }; |
| type record LlcBlock { |
| /* Header is only present if LI field was present */ |
| LlcBlockHdr hdr, |
| octetstring payload |
| } with { variant "" }; |
| type record of LlcBlock LlcBlocks; |
| |
| /* TS 44.060 10.2.1 Downlink RLC data block */ |
| type record DlMacHdrDataExt { |
| /* Octet 1 */ |
| PowerReduction pr, |
| BIT1 spare, |
| uint4_t tfi, /* 3 or 4? */ |
| boolean fbi, |
| /* Octet 2 */ |
| uint7_t bsn, |
| boolean e |
| } with { |
| variant (e) "FIELDLENGTH(1)" |
| }; |
| type record DlMacDataHeader { |
| DlMacHeader mac_hdr, |
| DlMacHdrDataExt hdr_ext |
| } with { variant "" }; |
| type record RlcmacDlDataBlock { |
| DlMacDataHeader mac_hdr, |
| /* Octet 3..M / N: manual C++ Decoder */ |
| LlcBlocks blocks |
| } with { |
| variant "" |
| }; |
| |
| external function enc_RlcmacDlDataBlock(in RlcmacDlDataBlock si) return octetstring; |
| external function dec_RlcmacDlDataBlock(in octetstring stream) return RlcmacDlDataBlock; |
| |
| |
| /* TS 44.060 10.2.2 */ |
| type record UlMacDataHeader { |
| /* Octet 0 */ |
| MacPayloadType pt, |
| uint4_t countdown, |
| boolean stall_ind, |
| boolean retry, |
| /* Octet 1 */ |
| BIT1 spare, |
| boolean pfi_ind, |
| uint5_t tfi, |
| boolean tlli_ind, |
| /* Octet 2 */ |
| uint7_t bsn, |
| boolean e |
| } with { |
| variant (stall_ind) "FIELDLENGTH(1)" |
| variant (retry) "FIELDLENGTH(1)" |
| variant (pfi_ind) "FIELDLENGTH(1)" |
| variant (tlli_ind) "FIELDLENGTH(1)" |
| variant (e) "FIELDLENGTH(1)" |
| }; |
| |
| type record RlcMacUlPfi { |
| uint7_t pfi, |
| boolean m |
| } with { |
| variant (m) "FIELDLENGTH(1)" |
| }; |
| |
| /* TS 44.060 10.2.2 */ |
| type record RlcmacUlDataBlock { |
| /* MAC header */ |
| UlMacDataHeader mac_hdr, |
| /* Octet 3 ... M (optional): manual C++ Decoder */ |
| GprsTlli tlli optional, |
| RlcMacUlPfi pfi optional, |
| LlcBlocks blocks |
| } with { |
| variant (tlli) "PRESENCE(mac_hdr.tlli_ind = true)" |
| variant (pfi) "PRESENCE(mac_hdr.pfi_ind = true)" |
| }; |
| |
| external function enc_RlcmacUlDataBlock(in RlcmacUlDataBlock si) return octetstring; |
| external function dec_RlcmacUlDataBlock(in octetstring stream) return RlcmacUlDataBlock; |
| |
| } with { encode "RAW"; variant "FIELDORDER(msb)" } |