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openairinterface5g/openair2/LAYER2/MAC/ra_procedures.c
T
Bi-Ruei, Chiu f097cca7a5 Compare RRC_VERSION with MAKE_VERSION(x,y,z) macro to provide better SW configuration 
To minimize migration effort, we follow the logic of legacy macro Rel10 and Rel14 used
for conditional compilation of current code.

In the future, they might be changed to accommodate finer software configuration, e.g.
MAKE_VERSION(12,2,0) or MAKE_VERSION(13,1,0) .... etc.
2018-05-29 18:00:58 +08:00

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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*! \file ra_procedures.c
* \brief Routines for UE MAC-layer Random-access procedures (36.321) V8.6 2009-03
* \author R. Knopp and Navid Nikaein
* \date 2011
* \version 0.1
* \company Eurecom
* \email: knopp@eurecom.fr navid.nikaein@eurecom.fr
* \note
* \warning
*/
#include "mac_extern.h"
#include "mac.h"
#include "mac_proto.h"
#include "UTIL/LOG/vcd_signal_dumper.h"
#include "PHY_INTERFACE/phy_interface_extern.h"
#include "SCHED_UE/sched_UE.h"
#include "COMMON/mac_rrc_primitives.h"
#include "RRC/LTE/rrc_extern.h"
#include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h"
#include "UTIL/LOG/log.h"
#include "UTIL/OPT/opt.h"
#include "OCG.h"
#include "OCG_extern.h"
#include "SIMULATION/TOOLS/sim.h" // for taus
#include "PHY/LTE_TRANSPORT/transport_common_proto.h"
#include "PHY/LTE_ESTIMATION/lte_estimation.h"
extern uint8_t nfapi_mode;
extern UE_MODE_t get_ue_mode(uint8_t Mod_id,uint8_t CC_id,uint8_t eNB_index);
/// This routine implements Section 5.1.2 (UE Random Access Resource Selection) from 36.321
void
get_prach_resources(module_id_t module_idP,
int CC_id,
uint8_t eNB_index,
uint8_t t_id,
uint8_t first_Msg3,
RACH_ConfigDedicated_t * rach_ConfigDedicated)
{
uint8_t Msg3_size = UE_mac_inst[module_idP].RA_Msg3_size;
PRACH_RESOURCES_t *prach_resources =
&UE_mac_inst[module_idP].RA_prach_resources;
RACH_ConfigCommon_t *rach_ConfigCommon = NULL;
uint8_t noGroupB = 0;
uint8_t f_id = 0, num_prach = 0;
int numberOfRA_Preambles;
int messageSizeGroupA;
int sizeOfRA_PreamblesGroupA;
int messagePowerOffsetGroupB;
int PLThreshold;
AssertFatal(CC_id == 0,
"Transmission on secondary CCs is not supported yet\n");
AssertFatal(UE_mac_inst[module_idP].radioResourceConfigCommon != NULL,
"[UE %d] FATAL radioResourceConfigCommon is NULL !!!\n",
module_idP);
rach_ConfigCommon =
&UE_mac_inst[module_idP].radioResourceConfigCommon->
rach_ConfigCommon;
numberOfRA_Preambles =
(1 + rach_ConfigCommon->preambleInfo.numberOfRA_Preambles) << 2;
if (rach_ConfigDedicated) { // This is for network controlled Mobility, later
if (rach_ConfigDedicated->ra_PRACH_MaskIndex != 0) {
prach_resources->ra_PreambleIndex =
rach_ConfigDedicated->ra_PreambleIndex;
prach_resources->ra_RACH_MaskIndex =
rach_ConfigDedicated->ra_PRACH_MaskIndex;
return;
}
}
/* TODO: gcc warns if this variable is not always set, let's put -1 for no more warning */
messageSizeGroupA = -1;
if (!rach_ConfigCommon->preambleInfo.preamblesGroupAConfig) {
noGroupB = 1;
} else {
sizeOfRA_PreamblesGroupA =
(rach_ConfigCommon->preambleInfo.
preamblesGroupAConfig->sizeOfRA_PreamblesGroupA + 1) << 2;
switch (rach_ConfigCommon->preambleInfo.
preamblesGroupAConfig->messageSizeGroupA) {
case 0:
messageSizeGroupA = 56;
break;
case 1:
messageSizeGroupA = 144;
break;
case 2:
messageSizeGroupA = 208;
break;
case 3:
messageSizeGroupA = 256;
break;
}
/* TODO: what value to use as default? */
messagePowerOffsetGroupB = -9999;
switch (rach_ConfigCommon->preambleInfo.
preamblesGroupAConfig->messagePowerOffsetGroupB) {
case 0:
messagePowerOffsetGroupB = -9999;
break;
case 1:
messagePowerOffsetGroupB = 0;
break;
case 2:
messagePowerOffsetGroupB = 5;
break;
case 3:
messagePowerOffsetGroupB = 8;
break;
case 4:
messagePowerOffsetGroupB = 10;
break;
case 5:
messagePowerOffsetGroupB = 12;
break;
case 6:
messagePowerOffsetGroupB = 15;
break;
case 7:
messagePowerOffsetGroupB = 18;
break;
}
PLThreshold =
0 - get_DELTA_PREAMBLE(module_idP,
CC_id) -
get_Po_NOMINAL_PUSCH(module_idP,
CC_id) - messagePowerOffsetGroupB;
// Note Pcmax is set to 0 here, we have to fix this
if (sizeOfRA_PreamblesGroupA == numberOfRA_Preambles) {
noGroupB = 1;
}
}
if (first_Msg3 == 1) {
if (noGroupB == 1) {
// use Group A procedure
UE_mac_inst[module_idP].RA_prach_resources.ra_PreambleIndex =
(taus()) % numberOfRA_Preambles;
UE_mac_inst[module_idP].RA_prach_resources.ra_RACH_MaskIndex =
0;
UE_mac_inst[module_idP].RA_usedGroupA = 1;
} else if ((Msg3_size < messageSizeGroupA) ||
(get_PL(module_idP, 0, eNB_index) > PLThreshold)) {
// use Group A procedure
UE_mac_inst[module_idP].RA_prach_resources.ra_PreambleIndex =
(taus()) % sizeOfRA_PreamblesGroupA;
UE_mac_inst[module_idP].RA_prach_resources.ra_RACH_MaskIndex =
0;
UE_mac_inst[module_idP].RA_usedGroupA = 1;
} else { // use Group B
UE_mac_inst[module_idP].RA_prach_resources.ra_PreambleIndex =
sizeOfRA_PreamblesGroupA +
(taus()) % (numberOfRA_Preambles -
sizeOfRA_PreamblesGroupA);
UE_mac_inst[module_idP].RA_prach_resources.ra_RACH_MaskIndex =
0;
UE_mac_inst[module_idP].RA_usedGroupA = 0;
}
UE_mac_inst[module_idP].
RA_prach_resources.ra_PREAMBLE_RECEIVED_TARGET_POWER =
get_Po_NOMINAL_PUSCH(module_idP, CC_id);
} else { // Msg3 is being retransmitted
if (UE_mac_inst[module_idP].RA_usedGroupA == 1) {
if (rach_ConfigCommon->preambleInfo.preamblesGroupAConfig) {
UE_mac_inst[module_idP].RA_prach_resources.
ra_PreambleIndex =
(taus()) %
rach_ConfigCommon->preambleInfo.
preamblesGroupAConfig->sizeOfRA_PreamblesGroupA;
} else {
UE_mac_inst[module_idP].RA_prach_resources.
ra_PreambleIndex = (taus()) & 0x3f;
}
UE_mac_inst[module_idP].RA_prach_resources.ra_RACH_MaskIndex =
0;
} else {
// FIXME rach_ConfigCommon->preambleInfo.preamblesGroupAConfig may be zero
UE_mac_inst[module_idP].RA_prach_resources.ra_PreambleIndex =
rach_ConfigCommon->preambleInfo.
preamblesGroupAConfig->sizeOfRA_PreamblesGroupA +
(taus()) %
(rach_ConfigCommon->preambleInfo.numberOfRA_Preambles -
rach_ConfigCommon->preambleInfo.
preamblesGroupAConfig->sizeOfRA_PreamblesGroupA);
UE_mac_inst[module_idP].RA_prach_resources.ra_RACH_MaskIndex =
0;
}
}
// choose random PRACH resource in TDD
if (UE_mac_inst[module_idP].tdd_Config) {
num_prach = get_num_prach_tdd(module_idP);
if ((num_prach > 0) && (num_prach < 6)) {
UE_mac_inst[module_idP].RA_prach_resources.ra_TDD_map_index =
(taus() % num_prach);
}
f_id = get_fid_prach_tdd(module_idP,
UE_mac_inst
[module_idP].RA_prach_resources.
ra_TDD_map_index);
}
// choose RA-RNTI
UE_mac_inst[module_idP].RA_prach_resources.ra_RNTI =
1 + t_id + 10 * f_id;
}
void
Msg1_transmitted(module_id_t module_idP, uint8_t CC_id,
frame_t frameP, uint8_t eNB_id)
{
AssertFatal(CC_id == 0,
"Transmission on secondary CCs is not supported yet\n");
// start contention resolution timer
UE_mac_inst[module_idP].RA_attempt_number++;
if (opt_enabled) {
trace_pdu(0, NULL, 0, module_idP, 0,
UE_mac_inst[module_idP].RA_prach_resources.
ra_PreambleIndex, UE_mac_inst[module_idP].txFrame,
UE_mac_inst[module_idP].txSubframe, 0,
UE_mac_inst[module_idP].RA_attempt_number);
LOG_D(OPT,
"[UE %d][RAPROC] TX MSG1 Frame %d trace pdu for rnti %x with size %d\n",
module_idP, frameP, 1, UE_mac_inst[module_idP].RA_Msg3_size);
}
}
void
Msg3_transmitted(module_id_t module_idP, uint8_t CC_id,
frame_t frameP, uint8_t eNB_id)
{
AssertFatal(CC_id == 0,
"Transmission on secondary CCs is not supported yet\n");
// start contention resolution timer
LOG_D(MAC,
"[UE %d][RAPROC] Frame %d : Msg3_tx: Setting contention resolution timer\n",
module_idP, frameP);
UE_mac_inst[module_idP].RA_contention_resolution_cnt = 0;
UE_mac_inst[module_idP].RA_contention_resolution_timer_active = 1;
if (opt_enabled) { // msg3
trace_pdu(0, &UE_mac_inst[module_idP].CCCH_pdu.payload[0],
UE_mac_inst[module_idP].RA_Msg3_size, module_idP, 3,
UE_mac_inst[module_idP].crnti,
UE_mac_inst[module_idP].txFrame,
UE_mac_inst[module_idP].txSubframe, 0, 0);
LOG_D(OPT,
"[UE %d][RAPROC] MSG3 Frame %d trace pdu Preamble %d with size %d\n",
module_idP, frameP, UE_mac_inst[module_idP].crnti
/*UE_mac_inst[module_idP].RA_prach_resources.ra_PreambleIndex */
, UE_mac_inst[module_idP].RA_Msg3_size);
}
}
PRACH_RESOURCES_t *ue_get_rach(module_id_t module_idP, int CC_id,
frame_t frameP, uint8_t eNB_indexP,
sub_frame_t subframeP)
{
uint8_t Size = 0;
UE_MODE_t UE_mode;
// Panos: Modification for phy_stub_ue operation
if(nfapi_mode == 3) { // Panos: phy_stub_ue mode
UE_mode = UE_mac_inst[module_idP].UE_mode[0];
LOG_D(MAC, "ue_get_rach , UE_mode: %d", UE_mode);
}
else { // Full stack mode
UE_mode = get_ue_mode(module_idP,0,eNB_indexP);
}
uint8_t lcid = CCCH;
uint16_t Size16;
struct RACH_ConfigCommon *rach_ConfigCommon =
(struct RACH_ConfigCommon *) NULL;
int32_t frame_diff = 0;
mac_rlc_status_resp_t rlc_status;
uint8_t dcch_header_len = 0;
uint16_t sdu_lengths[8];
uint8_t ulsch_buff[MAX_ULSCH_PAYLOAD_BYTES];
AssertFatal(CC_id == 0,
"Transmission on secondary CCs is not supported yet\n");
if (UE_mode == PRACH) {
LOG_D(MAC, "ue_get_rach 3, RA_active value: %d", UE_mac_inst[module_idP].RA_active);
if (UE_mac_inst[module_idP].radioResourceConfigCommon) {
rach_ConfigCommon =
&UE_mac_inst[module_idP].
radioResourceConfigCommon->rach_ConfigCommon;
} else {
return (NULL);
}
if (UE_mac_inst[module_idP].RA_active == 0) {
LOG_I(MAC, "RA not active\n");
// check if RRC is ready to initiate the RA procedure
Size = mac_rrc_data_req_ue(module_idP,
CC_id,
frameP,
CCCH, 1,
&UE_mac_inst[module_idP].
CCCH_pdu.payload[sizeof
(SCH_SUBHEADER_SHORT)
+ 1], eNB_indexP,
0);
Size16 = (uint16_t) Size;
// LOG_D(MAC,"[UE %d] Frame %d: Requested RRCConnectionRequest, got %d bytes\n",module_idP,frameP,Size);
LOG_I(RRC,
"[MSC_MSG][FRAME %05d][RRC_UE][MOD %02d][][--- MAC_DATA_REQ (RRCConnectionRequest eNB %d) --->][MAC_UE][MOD %02d][]\n",
frameP, module_idP, eNB_indexP, module_idP);
LOG_I(MAC,
"[UE %d] Frame %d: Requested RRCConnectionRequest, got %d bytes\n",
module_idP, frameP, Size);
if (Size > 0) {
UE_mac_inst[module_idP].RA_active = 1;
UE_mac_inst[module_idP].RA_PREAMBLE_TRANSMISSION_COUNTER =
1;
UE_mac_inst[module_idP].RA_Msg3_size =
Size + sizeof(SCH_SUBHEADER_SHORT) +
sizeof(SCH_SUBHEADER_SHORT);
UE_mac_inst[module_idP].RA_prachMaskIndex = 0;
UE_mac_inst[module_idP].RA_prach_resources.Msg3 =
UE_mac_inst[module_idP].CCCH_pdu.payload;
UE_mac_inst[module_idP].RA_backoff_cnt = 0; // add the backoff condition here if we have it from a previous RA reponse which failed (i.e. backoff indicator)
AssertFatal(rach_ConfigCommon != NULL,
"[UE %d] FATAL Frame %d: rach_ConfigCommon is NULL !!!\n",
module_idP, frameP);
UE_mac_inst[module_idP].RA_window_cnt =
2 +
rach_ConfigCommon->ra_SupervisionInfo.
ra_ResponseWindowSize;
if (UE_mac_inst[module_idP].RA_window_cnt == 9) {
UE_mac_inst[module_idP].RA_window_cnt = 10; // Note: 9 subframe window doesn't exist, after 8 is 10!
}
UE_mac_inst[module_idP].RA_tx_frame = frameP;
UE_mac_inst[module_idP].RA_tx_subframe = subframeP;
UE_mac_inst[module_idP].RA_backoff_frame = frameP;
UE_mac_inst[module_idP].RA_backoff_subframe = subframeP;
// Fill in preamble and PRACH resource
get_prach_resources(module_idP, CC_id, eNB_indexP,
subframeP, 1, NULL);
generate_ulsch_header((uint8_t *) & UE_mac_inst[module_idP].CCCH_pdu.payload[0], // mac header
1, // num sdus
0, // short pading
&Size16, // sdu length
&lcid, // sdu lcid
NULL, // power headroom
NULL, // crnti
NULL, // truncated bsr
NULL, // short bsr
NULL, // long_bsr
1); //post_padding
return (&UE_mac_inst[module_idP].RA_prach_resources);
} else if (UE_mac_inst[module_idP].
scheduling_info.BSR_bytes[UE_mac_inst[module_idP].
scheduling_info.LCGID
[DCCH]] > 0) {
// This is for triggering a transmission on DCCH using PRACH (during handover, or sending SR for example)
dcch_header_len = 2 + 2; /// SHORT Subheader + C-RNTI control element
rlc_status =
mac_rlc_status_ind(module_idP,
UE_mac_inst[module_idP].crnti,
eNB_indexP, frameP, subframeP,
ENB_FLAG_NO, MBMS_FLAG_NO, DCCH, 6
#if (RRC_VERSION >= MAKE_VERSION(14, 0, 0))
,0, 0
#endif
);
if (UE_mac_inst[module_idP].crnti_before_ho)
LOG_D(MAC,
"[UE %d] Frame %d : UL-DCCH -> ULSCH, HO RRCConnectionReconfigurationComplete (%x, %x), RRC message has %d bytes to send throug PRACH (mac header len %d)\n",
module_idP, frameP,
UE_mac_inst[module_idP].crnti,
UE_mac_inst[module_idP].crnti_before_ho,
rlc_status.bytes_in_buffer, dcch_header_len);
else
LOG_D(MAC,
"[UE %d] Frame %d : UL-DCCH -> ULSCH, RRC message has %d bytes to send through PRACH(mac header len %d)\n",
module_idP, frameP, rlc_status.bytes_in_buffer,
dcch_header_len);
sdu_lengths[0] = mac_rlc_data_req(module_idP, UE_mac_inst[module_idP].crnti, eNB_indexP, frameP, ENB_FLAG_NO, MBMS_FLAG_NO, DCCH, 6, //not used
(char *) &ulsch_buff[0]
#if (RRC_VERSION >= MAKE_VERSION(14, 0, 0))
,0,
0
#endif
);
LOG_D(MAC, "[UE %d] TX Got %d bytes for DCCH\n",
module_idP, sdu_lengths[0]);
update_bsr(module_idP, frameP, subframeP, eNB_indexP);
UE_mac_inst[module_idP].
scheduling_info.BSR[UE_mac_inst[module_idP].
scheduling_info.LCGID[DCCH]] =
locate_BsrIndexByBufferSize(BSR_TABLE, BSR_TABLE_SIZE,
UE_mac_inst
[module_idP].scheduling_info.BSR_bytes
[UE_mac_inst
[module_idP].scheduling_info.LCGID
[DCCH]]);
//TO DO: fill BSR infos in UL TBS
//header_len +=2;
UE_mac_inst[module_idP].RA_active = 1;
UE_mac_inst[module_idP].RA_PREAMBLE_TRANSMISSION_COUNTER =
1;
UE_mac_inst[module_idP].RA_Msg3_size =
Size + dcch_header_len;
UE_mac_inst[module_idP].RA_prachMaskIndex = 0;
UE_mac_inst[module_idP].RA_prach_resources.Msg3 =
ulsch_buff;
UE_mac_inst[module_idP].RA_backoff_cnt = 0; // add the backoff condition here if we have it from a previous RA reponse which failed (i.e. backoff indicator)
AssertFatal(rach_ConfigCommon != NULL,
"[UE %d] FATAL Frame %d: rach_ConfigCommon is NULL !!!\n",
module_idP, frameP);
UE_mac_inst[module_idP].RA_window_cnt =
2 +
rach_ConfigCommon->ra_SupervisionInfo.
ra_ResponseWindowSize;
if (UE_mac_inst[module_idP].RA_window_cnt == 9) {
UE_mac_inst[module_idP].RA_window_cnt = 10; // Note: 9 subframe window doesn't exist, after 8 is 10!
}
UE_mac_inst[module_idP].RA_tx_frame = frameP;
UE_mac_inst[module_idP].RA_tx_subframe = subframeP;
UE_mac_inst[module_idP].RA_backoff_frame = frameP;
UE_mac_inst[module_idP].RA_backoff_subframe = subframeP;
// Fill in preamble and PRACH resource
get_prach_resources(module_idP, CC_id, eNB_indexP,
subframeP, 1, NULL);
generate_ulsch_header((uint8_t *) ulsch_buff, // mac header
1, // num sdus
0, // short pading
&Size16, // sdu length
&lcid, // sdu lcid
NULL, // power headroom
&UE_mac_inst[module_idP].crnti, // crnti
NULL, // truncated bsr
NULL, // short bsr
NULL, // long_bsr
0); //post_padding
return (&UE_mac_inst[module_idP].RA_prach_resources);
}
} else { // RACH is active
LOG_D(MAC,
"[MAC][UE %d][RAPROC] frameP %d, subframe %d: RA Active, window cnt %d (RA_tx_frame %d, RA_tx_subframe %d)\n",
module_idP, frameP, subframeP,
UE_mac_inst[module_idP].RA_window_cnt,
UE_mac_inst[module_idP].RA_tx_frame,
UE_mac_inst[module_idP].RA_tx_subframe);
// compute backoff parameters
if (UE_mac_inst[module_idP].RA_backoff_cnt > 0) {
frame_diff =
(sframe_t) frameP -
UE_mac_inst[module_idP].RA_backoff_frame;
if (frame_diff < 0) {
frame_diff = -frame_diff;
}
UE_mac_inst[module_idP].RA_backoff_cnt -=
((10 * frame_diff) +
(subframeP -
UE_mac_inst[module_idP].RA_backoff_subframe));
UE_mac_inst[module_idP].RA_backoff_frame = frameP;
UE_mac_inst[module_idP].RA_backoff_subframe = subframeP;
}
// compute RA window parameters
if (UE_mac_inst[module_idP].RA_window_cnt > 0) {
frame_diff =
(frame_t) frameP - UE_mac_inst[module_idP].RA_tx_frame;
if (frame_diff < 0) {
frame_diff = -frame_diff;
}
UE_mac_inst[module_idP].RA_window_cnt -=
((10 * frame_diff) +
(subframeP - UE_mac_inst[module_idP].RA_tx_subframe));
LOG_D(MAC,
"[MAC][UE %d][RAPROC] frameP %d, subframe %d: RA Active, adjusted window cnt %d\n",
module_idP, frameP, subframeP,
UE_mac_inst[module_idP].RA_window_cnt);
}
if ((UE_mac_inst[module_idP].RA_window_cnt <= 0) &&
(UE_mac_inst[module_idP].RA_backoff_cnt <= 0)) {
UE_mac_inst[module_idP].RA_tx_frame = frameP;
UE_mac_inst[module_idP].RA_tx_subframe = subframeP;
UE_mac_inst[module_idP].RA_PREAMBLE_TRANSMISSION_COUNTER++;
UE_mac_inst[module_idP].RA_prach_resources.ra_PREAMBLE_RECEIVED_TARGET_POWER += (rach_ConfigCommon->powerRampingParameters.powerRampingStep << 1); // 2dB increments in ASN.1 definition
int preambleTransMax = -1;
switch (rach_ConfigCommon->ra_SupervisionInfo.
preambleTransMax) {
case PreambleTransMax_n3:
preambleTransMax = 3;
break;
case PreambleTransMax_n4:
preambleTransMax = 4;
break;
case PreambleTransMax_n5:
preambleTransMax = 5;
break;
case PreambleTransMax_n6:
preambleTransMax = 6;
break;
case PreambleTransMax_n7:
preambleTransMax = 7;
break;
case PreambleTransMax_n8:
preambleTransMax = 8;
break;
case PreambleTransMax_n10:
preambleTransMax = 10;
break;
case PreambleTransMax_n20:
preambleTransMax = 20;
break;
case PreambleTransMax_n50:
preambleTransMax = 50;
break;
case PreambleTransMax_n100:
preambleTransMax = 100;
break;
case PreambleTransMax_n200:
preambleTransMax = 200;
break;
}
if (UE_mac_inst[module_idP].
RA_PREAMBLE_TRANSMISSION_COUNTER == preambleTransMax) {
LOG_D(MAC,
"[UE %d] Frame %d: Maximum number of RACH attempts (%d)\n",
module_idP, frameP, preambleTransMax);
// send message to RRC
UE_mac_inst[module_idP].
RA_PREAMBLE_TRANSMISSION_COUNTER = 1;
UE_mac_inst[module_idP].
RA_prach_resources.ra_PREAMBLE_RECEIVED_TARGET_POWER
= get_Po_NOMINAL_PUSCH(module_idP, CC_id);
}
UE_mac_inst[module_idP].RA_window_cnt =
2 +
rach_ConfigCommon->ra_SupervisionInfo.
ra_ResponseWindowSize;
UE_mac_inst[module_idP].RA_backoff_cnt = 0;
// Fill in preamble and PRACH resource
get_prach_resources(module_idP, CC_id, eNB_indexP,
subframeP, 0, NULL);
return (&UE_mac_inst[module_idP].RA_prach_resources);
}
}
} else if (UE_mode == PUSCH) {
LOG_D(MAC,
"[UE %d] FATAL: Should not have checked for RACH in PUSCH yet ...",
module_idP);
AssertFatal(1 == 0, "");
}
return (NULL);
}
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