| /* TITAN REW encode/decode definitions for 3GPP TS 44.060 RLC/MAC Blocks */ |
| |
| /* (C) 2017-2018 Harald Welte <laforge@gnumonks.org> |
| * (C) 2020 by sysmocom s.f.m.c. GmbH <info@sysmocom.de> |
| * All rights reserved. |
| * |
| * Released under the terms of GNU General Public License, Version 2 or |
| * (at your option) any later version. |
| * |
| * SPDX-License-Identifier: GPL-2.0-or-later |
| */ |
| |
| module RLCMAC_Templates { |
| import from General_Types all; |
| import from Osmocom_Types all; |
| import from GSM_Types all; |
| import from RLCMAC_CSN1_Types all; |
| import from RLCMAC_CSN1_Templates all; |
| import from RLCMAC_Types all; |
| |
| /* TS 44.060 10.4.5 */ |
| function f_rrbp_fn_delay(MacRrbp rrbp) return uint32_t { |
| select (rrbp) { |
| case (RRBP_Nplus13_mod_2715648) { return 13; } |
| case (RRBP_Nplus17_or_18_mod_2715648) { return 17; } |
| case (RRBP_Nplus21_or_22_mod_2715648) { return 21; } |
| case (RRBP_Nplus26_mod_2715648) { return 26; } |
| } |
| return 0; |
| } |
| |
| function f_rlcmac_cs_mcs2block_len(CodingScheme cs_mcs) return uint32_t { |
| select (cs_mcs) { |
| case (CS_1) { return 23; } |
| case (CS_2) { return 34; } |
| case (CS_3) { return 40; } |
| case (CS_4) { return 54; } |
| case (MCS_1) { return 27; } |
| case (MCS_2) { return 33; } |
| case (MCS_3) { return 42; } |
| case (MCS_4) { return 49; } |
| case (MCS_5) { return 61; } |
| case (MCS_6) { return 79; } |
| case (MCS_7) { return 119; } |
| case (MCS_8) { return 143; } |
| case (MCS_9) { return 155; } |
| } |
| return 0; |
| } |
| |
| function f_rlcmac_block_len2cs_mcs(uint32_t len) return CodingScheme { |
| select (len) { |
| case (23) { return CS_1; } |
| case (34) { return CS_2; } |
| case (40) { return CS_3; } |
| case (54) { return CS_4; } |
| case (27) { return MCS_1; } |
| case (33) { return MCS_2; } |
| case (42) { return MCS_3; } |
| case (49) { return MCS_4; } |
| case (60) { return MCS_5; } |
| case (61) { return MCS_5; } |
| case (78) { return MCS_6; } |
| case (79) { return MCS_6; } |
| case (118) { return MCS_7; } |
| case (119) { return MCS_7; } |
| case (142) { return MCS_8; } |
| case (143) { return MCS_8; } |
| case (154) { return MCS_9; } |
| case (155) { return MCS_9; } |
| } |
| return CS_1; |
| } |
| |
| template (value) RlcmacUlBlock ts_RLC_UL_CTRL_ACK(RlcmacUlCtrlMsg ctrl, |
| MacPayloadType pt := MAC_PT_RLCMAC_NO_OPT, |
| boolean retry := false) := { |
| ctrl := { |
| mac_hdr := { |
| payload_type := pt, |
| spare := '00000'B, |
| retry := retry |
| }, |
| payload := ctrl |
| } |
| } |
| |
| /* Send Template for Downlink ACK/NACK */ |
| template RlcmacUlBlock ts_RLCMAC_DL_ACK_NACK(template uint5_t tfi, AckNackDescription andesc, boolean retry := false) := { |
| ctrl := { |
| mac_hdr := { |
| payload_type := MAC_PT_RLCMAC_NO_OPT, |
| spare := '00000'B, |
| retry := retry |
| }, |
| payload := { |
| msg_type := PACKET_DL_ACK_NACK, |
| u := { |
| dl_ack_nack := { |
| dl_tfi := tfi, |
| ack_nack_desc := andesc, |
| chreq_desc_presence := '0'B, |
| chreq_desc := omit, |
| ch_qual_rep := c_ChQualRep_default |
| } |
| } |
| } |
| } |
| } |
| |
| /* Template for uplink Data block */ |
| template RlcmacUlBlock t_RLCMAC_UL_DATA(template uint5_t tfi, template uint4_t cv, template uint7_t bsn, |
| template LlcBlocks blocks := {}, template boolean stall := false) := { |
| data := { |
| mac_hdr := { |
| payload_type := MAC_PT_RLC_DATA, |
| countdown := cv, |
| stall_ind := false, |
| retry := false, |
| spare := '0'B, |
| pfi_ind := false, |
| tfi := tfi, |
| tlli_ind := false, |
| bsn := bsn, |
| e := false |
| }, |
| tlli := omit, |
| pfi := omit, |
| blocks := blocks |
| } |
| } |
| template RlcmacUlBlock t_RLCMAC_UL_DATA_TLLI(template uint5_t tfi, template uint4_t cv, template uint7_t bsn, |
| template LlcBlocks blocks := {}, template boolean stall := false, template GprsTlli tlli) := { |
| data := { |
| mac_hdr := { |
| payload_type := MAC_PT_RLC_DATA, |
| countdown := cv, |
| stall_ind := false, |
| retry := false, |
| spare := '0'B, |
| pfi_ind := false, |
| tfi := tfi, |
| tlli_ind := true, |
| bsn := bsn, |
| e := false |
| }, |
| tlli := tlli, |
| pfi := omit, |
| blocks := blocks |
| } |
| } |
| |
| template DlMacHeader t_RLCMAC_DlMacH(template MacPayloadType pt, template MacRrbp rrbp, template |
| uint3_t usf) := { |
| payload_type := pt, |
| rrbp := rrbp, |
| rrbp_valid := ispresent(rrbp), |
| usf := usf |
| } |
| |
| template RlcmacDlBlock tr_RLCMAC_DUMMY_CTRL(template uint3_t usf := ?, template PageMode page_mode := ?) := { |
| ctrl := { |
| mac_hdr := { |
| payload_type := (MAC_PT_RLCMAC_NO_OPT, MAC_PT_RLCMAC_OPT), |
| rrbp:= ?, |
| rrbp_valid := ?, |
| usf := usf |
| }, |
| opt := *, |
| payload := { |
| msg_type := PACKET_DL_DUMMY_CTRL, |
| u := { |
| dl_dummy := { |
| page_mode := page_mode, |
| persistence_levels_present := ?, |
| persistence_levels := * |
| } |
| } |
| } |
| } |
| } |
| |
| template RlcmacDlBlock tr_RLCMAC_DL_PACKET_ASS(template uint3_t usf := ?) := { |
| ctrl := { |
| mac_hdr := { |
| payload_type := (MAC_PT_RLCMAC_NO_OPT, MAC_PT_RLCMAC_OPT), |
| rrbp:= ?, |
| rrbp_valid := ?, |
| usf := usf |
| }, |
| opt := *, |
| payload := { |
| msg_type := PACKET_DL_ASSIGNMENT, |
| u := { |
| dl_assignment := { |
| page_mode := ?, |
| pres1 := ?, |
| persistence_levels := *, |
| tfi_or_tlli := ? |
| } |
| } |
| } |
| } |
| } |
| |
| template RlcmacDlBlock tr_RLCMAC_UL_PACKET_ASS(template uint3_t usf := ?) := { |
| ctrl := { |
| mac_hdr := { |
| payload_type := (MAC_PT_RLCMAC_NO_OPT, MAC_PT_RLCMAC_OPT), |
| rrbp:= ?, |
| rrbp_valid := ?, |
| usf := usf |
| }, |
| opt := *, |
| payload := { |
| msg_type := PACKET_UL_ASSIGNMENT, |
| u := { |
| ul_assignment := { |
| page_mode := ?, |
| persistence_levels_present := ?, |
| persistence_levels := *, |
| identity := ?, |
| is_egprs := ?, /* msg escape */ |
| gprs := * |
| } |
| } |
| } |
| } |
| } |
| |
| |
| /* Receive Template for Uplink ACK/NACK */ |
| template RlcmacDlBlock tr_RLCMAC_UL_ACK_NACK(template uint5_t ul_tfi, template GprsTlli tlli := ?) := { |
| ctrl := { |
| mac_hdr := { |
| payload_type := (MAC_PT_RLCMAC_NO_OPT, MAC_PT_RLCMAC_OPT), |
| rrbp:= ?, |
| rrbp_valid := ?, |
| usf := ? |
| }, |
| opt := *, |
| payload := { |
| msg_type := PACKET_UL_ACK_NACK, |
| u := { |
| ul_ack_nack := { |
| page_mode := ?, |
| msg_excape := ?, |
| uplink_tfi := ul_tfi, |
| is_egprs := '0'B, |
| gprs := { |
| ch_coding_cmd := ?, |
| ack_nack_desc := ?, |
| cont_res_tlli_present := ?, |
| cont_res_tlli := tlli, |
| pkt_ta_present := ?, |
| pkt_ta := *, |
| pwr_ctrl_present := ?, |
| pwr_ctrl := * |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| template RlcmacDlBlock tr_RLCMAC_PACKET_PAG_REQ(template uint3_t usf := ?) := { |
| ctrl := { |
| mac_hdr := { |
| payload_type := MAC_PT_RLCMAC_NO_OPT, |
| rrbp:= ?, |
| rrbp_valid := ?, |
| usf := usf |
| }, |
| opt := *, |
| payload := { |
| msg_type := PACKET_PAGING_REQUEST, |
| u := { |
| paging := { |
| page_mode := ?, |
| persistence_levels_present := ?, |
| persistence_levels := *, |
| nln_present := ?, |
| nln := *, |
| repeated_pageinfo_present := ?, |
| repeated_pageinfo := * |
| } |
| } |
| } |
| } |
| } |
| |
| template RlcmacDlBlock tr_RLCMAC_DATA_RRBP := { |
| data := { |
| mac_hdr := { |
| mac_hdr := { |
| payload_type := MAC_PT_RLC_DATA, |
| rrbp := ?, |
| rrbp_valid := true, |
| usf := ? |
| }, |
| hdr_ext := ? |
| }, |
| blocks := ? |
| } |
| } |
| |
| template RlcmacDlBlock tr_RLCMAC_DATA_EGPRS := { |
| data_egprs := { |
| mac_hdr := ?, |
| fbi := ?, |
| e := ?, |
| blocks := ? |
| } |
| } |
| |
| /* Template for Uplink MAC Control Header */ |
| template UlMacCtrlHeader t_RLCMAC_UlMacCtrlH(template MacPayloadType pt, template boolean retry := false) := { |
| payload_type := pt, |
| spare := '00000'B, |
| retry := retry |
| } |
| |
| /* Template for Uplink Control ACK */ |
| template RlcmacUlBlock ts_RLCMAC_CTRL_ACK(GprsTlli tlli, CtrlAck ack := MS_RCVD_TWO_RLC_SAME_RTI_DIFF_RBSN) := { |
| ctrl := { |
| mac_hdr := t_RLCMAC_UlMacCtrlH(MAC_PT_RLCMAC_NO_OPT), |
| payload := { |
| msg_type := PACKET_CONTROL_ACK, |
| u := { |
| ctrl_ack := { |
| tlli := tlli, |
| ctrl_ack := ack |
| } |
| } |
| } |
| } |
| } |
| |
| /* Template for a LlcBlock (part of a LLC frame inside RlcMac?lDataBlock */ |
| template LlcBlock t_RLCMAC_LLCBLOCK(octetstring data, boolean more := false, boolean e := true) := { |
| /* let encoder figure out the header */ |
| hdr := omit, |
| payload := data |
| } |
| |
| } with { encode "RAW"; variant "FIELDORDER(msb)" } |