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uint8_t *sdu_lcids,
POWER_HEADROOM_CMD *power_headroom,
uint16_t *crnti,
BSR_SHORT *truncated_bsr,
BSR_SHORT *short_bsr,
BSR_LONG *long_bsr,
unsigned short post_padding)
{
SCH_SUBHEADER_FIXED *mac_header_ptr = (SCH_SUBHEADER_FIXED *)mac_header;
unsigned char first_element=0,last_size=0,i;
unsigned char mac_header_control_elements[16],*ce_ptr;
LOG_D(MAC,"[UE] Generate ULSCH : num_sdus %d\n",num_sdus);
#ifdef DEBUG_HEADER_PARSING
LOG_T(MAC,"[UE] sdu %d : lcid %d length %d",i,sdu_lcids[i],sdu_lengths[i]);
LOG_T(MAC,"\n");
#endif
ce_ptr = &mac_header_control_elements[0];
if ((short_padding == 1) || (short_padding == 2)) {
mac_header_ptr->R = 0;
mac_header_ptr->E = 0;
mac_header_ptr->LCID = SHORT_PADDING;
first_element=1;
last_size=1;
if (short_padding == 2) {
mac_header_ptr->E = 1;
mac_header_ptr++;
mac_header_ptr->R = 0;
mac_header_ptr->E = 0;
mac_header_ptr->LCID = SHORT_PADDING;
last_size=1;
}
if (power_headroom) {
if (first_element>0) {
mac_header_ptr->E = 1;
mac_header_ptr++;
} else {
first_element=1;
}
mac_header_ptr->R = 0;
mac_header_ptr->E = 0;
mac_header_ptr->LCID = POWER_HEADROOM;
last_size=1;
*((POWER_HEADROOM_CMD *)ce_ptr)=(*power_headroom);
ce_ptr+=sizeof(POWER_HEADROOM_CMD);
LOG_D(MAC, "phr header size %zu\n",sizeof(POWER_HEADROOM_CMD));
}
if (crnti) {
#ifdef DEBUG_HEADER_PARSING
LOG_D(MAC,"[UE] CRNTI : %x (first_element %d)\n",*crnti,first_element);
#endif
if (first_element>0) {
mac_header_ptr->E = 1;
mac_header_ptr++;
} else {
first_element=1;
}
mac_header_ptr->R = 0;
mac_header_ptr->E = 0;
mac_header_ptr->LCID = CRNTI;
last_size=1;
*((uint16_t *)ce_ptr)=(*crnti);
ce_ptr+=sizeof(uint16_t);
// printf("offset %d\n",ce_ptr-mac_header_control_elements);
}
if (truncated_bsr) {
if (first_element>0) {
mac_header_ptr->E = 1;
/*
printf("last subheader : %x (R%d,E%d,LCID%d)\n",*(unsigned char*)mac_header_ptr,
((SCH_SUBHEADER_FIXED *)mac_header_ptr)->R,
((SCH_SUBHEADER_FIXED *)mac_header_ptr)->E,
((SCH_SUBHEADER_FIXED *)mac_header_ptr)->LCID);
*/
mac_header_ptr++;
} else {
first_element=1;
}
#ifdef DEBUG_HEADER_PARSING
LOG_D(MAC,"[UE] Scheduler Truncated BSR Header\n");
#endif
mac_header_ptr->R = 0;
mac_header_ptr->E = 0;
mac_header_ptr->LCID = TRUNCATED_BSR;
last_size=1;
*((BSR_TRUNCATED *)ce_ptr)=(*truncated_bsr);
ce_ptr+=sizeof(BSR_TRUNCATED);
// printf("(cont_res) : offset %d\n",ce_ptr-mac_header_control_elements);
} else if (short_bsr) {
if (first_element>0) {
mac_header_ptr->E = 1;
/*
printf("last subheader : %x (R%d,E%d,LCID%d)\n",*(unsigned char*)mac_header_ptr,
((SCH_SUBHEADER_FIXED *)mac_header_ptr)->R,
((SCH_SUBHEADER_FIXED *)mac_header_ptr)->E,
((SCH_SUBHEADER_FIXED *)mac_header_ptr)->LCID);
*/
mac_header_ptr++;
} else {
first_element=1;
}
#ifdef DEBUG_HEADER_PARSING
LOG_D(MAC,"[UE] Scheduler SHORT BSR Header\n");
#endif
mac_header_ptr->R = 0;
mac_header_ptr->E = 0;
mac_header_ptr->LCID = SHORT_BSR;
last_size=1;
*((BSR_SHORT *)ce_ptr)=(*short_bsr);
ce_ptr+=sizeof(BSR_SHORT);
// printf("(cont_res) : offset %d\n",ce_ptr-mac_header_control_elements);
} else if (long_bsr) {
if (first_element>0) {
mac_header_ptr->E = 1;
/*
printf("last subheader : %x (R%d,E%d,LCID%d)\n",*(unsigned char*)mac_header_ptr,
((SCH_SUBHEADER_FIXED *)mac_header_ptr)->R,
((SCH_SUBHEADER_FIXED *)mac_header_ptr)->E,
((SCH_SUBHEADER_FIXED *)mac_header_ptr)->LCID);
*/
mac_header_ptr++;
} else {
first_element=1;
}
#ifdef DEBUG_HEADER_PARSING
LOG_D(MAC,"[UE] Scheduler Long BSR Header\n");
#endif
mac_header_ptr->R = 0;
mac_header_ptr->E = 0;
mac_header_ptr->LCID = LONG_BSR;
last_size=1;
*(ce_ptr) = (long_bsr->Buffer_size0 << 2) | ((long_bsr->Buffer_size1 & 0x30) >> 4);
*(ce_ptr + 1) = ((long_bsr->Buffer_size1 & 0x0F) << 4) | ((long_bsr->Buffer_size2 & 0x3C) >> 2);
*(ce_ptr + 2) = ((long_bsr->Buffer_size2 & 0x03) << 2) | (long_bsr->Buffer_size3 & 0x3F);
ce_ptr += BSR_LONG_SIZE;
// printf("(cont_res) : offset %d\n",ce_ptr-mac_header_control_elements);
// printf("last_size %d,mac_header_ptr %p\n",last_size,mac_header_ptr);
for (i=0; i<num_sdus; i++) {
#ifdef DEBUG_HEADER_PARSING
LOG_T(MAC,"[UE] sdu subheader %d (lcid %d, %d bytes)\n",i,sdu_lcids[i],sdu_lengths[i]);
#endif
if ((i == (num_sdus - 1)) && ((short_padding) || (post_padding == 0))) {
if (first_element>0) {
mac_header_ptr->E = 1;
#ifdef DEBUG_HEADER_PARSING
LOG_D(MAC,"[UE] last subheader : %x (R%d,E%d,LCID%d)\n",*(unsigned char*)mac_header_ptr,
((SCH_SUBHEADER_FIXED *)mac_header_ptr)->R,
((SCH_SUBHEADER_FIXED *)mac_header_ptr)->E,
((SCH_SUBHEADER_FIXED *)mac_header_ptr)->LCID);
#endif
mac_header_ptr+=last_size;
}
mac_header_ptr->R = 0;
mac_header_ptr->E = 0;
mac_header_ptr->LCID = sdu_lcids[i];
else {
if ((first_element>0)) {
mac_header_ptr->E = 1;
#ifdef DEBUG_HEADER_PARSING
LOG_D(MAC,"[UE] last subheader : %x (R%d,E%d,LCID%d)\n",*(unsigned char*)mac_header_ptr,
((SCH_SUBHEADER_FIXED *)mac_header_ptr)->R,
((SCH_SUBHEADER_FIXED *)mac_header_ptr)->E,
((SCH_SUBHEADER_FIXED *)mac_header_ptr)->LCID);
#endif
mac_header_ptr+=last_size;
// printf("last_size %d,mac_header_ptr %p\n",last_size,mac_header_ptr);
} else {
first_element=1;
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}
if (sdu_lengths[i] < 128) {
((SCH_SUBHEADER_SHORT *)mac_header_ptr)->R = 0; // 3
((SCH_SUBHEADER_SHORT *)mac_header_ptr)->E = 0;
((SCH_SUBHEADER_SHORT *)mac_header_ptr)->F = 0;
((SCH_SUBHEADER_SHORT *)mac_header_ptr)->LCID = sdu_lcids[i];
((SCH_SUBHEADER_SHORT *)mac_header_ptr)->L = (unsigned char)sdu_lengths[i];
last_size=2;
#ifdef DEBUG_HEADER_PARSING
LOG_D(MAC,"[UE] short sdu\n");
LOG_T(MAC,"[UE] last subheader : %x (R%d,E%d,LCID%d,F%d,L%d)\n",
((uint16_t*)mac_header_ptr)[0],
((SCH_SUBHEADER_SHORT *)mac_header_ptr)->R,
((SCH_SUBHEADER_SHORT *)mac_header_ptr)->E,
((SCH_SUBHEADER_SHORT *)mac_header_ptr)->LCID,
((SCH_SUBHEADER_SHORT *)mac_header_ptr)->F,
((SCH_SUBHEADER_SHORT *)mac_header_ptr)->L);
#endif
} else {
((SCH_SUBHEADER_LONG *)mac_header_ptr)->R = 0;
((SCH_SUBHEADER_LONG *)mac_header_ptr)->E = 0;
((SCH_SUBHEADER_LONG *)mac_header_ptr)->F = 1;
((SCH_SUBHEADER_LONG *)mac_header_ptr)->LCID = sdu_lcids[i];
((SCH_SUBHEADER_LONG *)mac_header_ptr)->L_MSB = ((unsigned short) sdu_lengths[i]>>8)&0x7f;
((SCH_SUBHEADER_LONG *)mac_header_ptr)->L_LSB = (unsigned short) sdu_lengths[i]&0xff;
((SCH_SUBHEADER_LONG *)mac_header_ptr)->padding = 0x00;
last_size=3;
#ifdef DEBUG_HEADER_PARSING
LOG_D(MAC,"[UE] long sdu\n");
#endif
}
if (post_padding>0) {// we have lots of padding at the end of the packet
mac_header_ptr->E = 1;
mac_header_ptr+=last_size;
// add a padding element
mac_header_ptr->R = 0;
mac_header_ptr->E = 0;
mac_header_ptr->LCID = SHORT_PADDING;
mac_header_ptr++;
} else { // no end of packet padding
// last SDU subhead is of fixed type (sdu length implicitly to be computed at UE)
mac_header_ptr++;
//mac_header_ptr=last_size; // FIXME: should be ++
if ((ce_ptr-mac_header_control_elements) > 0) {
memcpy((void*)mac_header_ptr,mac_header_control_elements,ce_ptr-mac_header_control_elements);
mac_header_ptr+=(unsigned char)(ce_ptr-mac_header_control_elements);
#ifdef DEBUG_HEADER_PARSING
for (i=0; i<((unsigned char*)mac_header_ptr - mac_header); i++) {
LOG_T(MAC,"%2x.",mac_header[i]);
LOG_T(MAC,"\n");
#endif
return((unsigned char*)mac_header_ptr - mac_header);
}
void ue_get_sdu(module_id_t module_idP,int CC_id,frame_t frameP,sub_frame_t subframe, uint8_t eNB_index,uint8_t *ulsch_buffer,uint16_t buflen, uint8_t *access_mode)
{
uint8_t total_rlc_pdu_header_len=0, rlc_pdu_header_len_last=0 ;
uint16_t buflen_remain = 0;
uint8_t bsr_len=0,bsr_ce_len=0,bsr_header_len=0;
uint8_t phr_header_len=0, phr_ce_len=0,phr_len=0;
boolean_t is_all_lcid_processed = FALSE;
uint16_t sdu_lengths[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t sdu_lcids[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t payload_offset=0,num_sdus=0;
uint8_t ulsch_buff[MAX_ULSCH_PAYLOAD_BYTES];
uint16_t sdu_length_total=0;
BSR_LONG bsr_long;
BSR_SHORT *bsr_s=&bsr_short;
BSR_LONG *bsr_l=&bsr_long;
POWER_HEADROOM_CMD phr;
POWER_HEADROOM_CMD *phr_p=&phr;
unsigned short short_padding=0, post_padding=0, padding_len=0;
int j; // used for padding
// Compute header length
int lcg_id_bsr_trunc = 0;
int highest_priority = 16;
rlc_buffer_occupancy_t lcid_buffer_occupancy_old=0, lcid_buffer_occupancy_new=0;
LOG_D(MAC,"[UE %d] MAC PROCESS UL TRANSPORT BLOCK at frame%d subframe %d TBS=%d\n",
module_idP, frameP, subframe, buflen);
AssertFatal(CC_id==0,
"Transmission on secondary CCs is not supported yet\n");
start_meas(&UE_mac_inst[module_idP].tx_ulsch_sdu);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_GET_SDU, VCD_FUNCTION_IN);
if (*access_mode==CBA_ACCESS) {
LOG_D(MAC,"[UE %d] frameP %d subframe %d try CBA transmission\n",
module_idP, frameP, subframe);
//if (UE_mac_inst[module_idP].scheduling_info.LCID_status[DTCH] == LCID_EMPTY)
if (cba_access(module_idP,frameP,subframe,eNB_index,buflen)==0) {
*access_mode=POSTPONED_ACCESS;
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_GET_SDU, VCD_FUNCTION_OUT);
return;
}
LOG_I(MAC,"[UE %d] frameP %d subframe %d CBA transmission oppurtunity, tbs %d\n",
module_idP, frameP, subframe,buflen);
#endif
phr_header_len = 1;//sizeof(SCH_SUBHEADER_FIXED);
while (lcg_id < MAX_NUM_LCGID) {
if (UE_mac_inst[module_idP].scheduling_info.BSR_bytes[lcg_id]){
num_lcg_id_with_data ++;
}
lcg_id ++;
}
if (num_lcg_id_with_data){
LOG_D(MAC,"[UE %d] MAC Tx data pending at frame%d subframe %d nb LCG =%d Bytes for LCG0=%d LCG1=%d LCG2=%d LCG3=%d BSR Trigger status =%d TBS=%d\n",
module_idP,
frameP,
subframe,
num_lcg_id_with_data,
UE_mac_inst[module_idP].scheduling_info.BSR_bytes[0],
UE_mac_inst[module_idP].scheduling_info.BSR_bytes[1],
UE_mac_inst[module_idP].scheduling_info.BSR_bytes[2],
UE_mac_inst[module_idP].scheduling_info.BSR_bytes[3],
UE_mac_inst[module_idP].BSR_reporting_active, buflen);
//Restart ReTxBSR Timer at new grant indication (36.321)
if (UE_mac_inst[module_idP].scheduling_info.retxBSR_SF != MAC_UE_BSR_TIMER_NOT_RUNNING){
UE_mac_inst[module_idP].scheduling_info.retxBSR_SF = get_sf_retxBSRTimer(UE_mac_inst[module_idP].scheduling_info.retxBSR_Timer);
if ((UE_mac_inst[module_idP].scheduling_info.periodicBSR_Timer != PeriodicBSR_Timer_r12_infinity)
&& (UE_mac_inst[module_idP].scheduling_info.periodicBSR_SF == 0)){
// Trigger BSR Periodic
UE_mac_inst[module_idP].BSR_reporting_active |= BSR_TRIGGER_PERIODIC;
LOG_D(MAC,"[UE %d] MAC BSR Triggered PeriodicBSR Timer expiry at frame%d subframe %d TBS=%d\n",
//Compute BSR Length if Regular or Periodic BSR is triggered
//WARNING: if BSR long is computed, it may be changed to BSR short during or after multiplexing if there remains less than 1 LCGROUP with data after Tx
AssertFatal ((UE_mac_inst[module_idP].BSR_reporting_active & BSR_TRIGGER_PADDING) == 0 , "Inconsistent BSR Trigger=%d !\n",
UE_mac_inst[module_idP].BSR_reporting_active);
if (buflen >= 4){
//A Regular or Periodic BSR can only be sent if TBS >= 4 as transmitting only a BSR is not allowed if UE has data to transmit
bsr_header_len = 1;
if (num_lcg_id_with_data <= 1){
bsr_ce_len = sizeof(BSR_SHORT); //1 byte
}
else{
phr_ce_len = (UE_mac_inst[module_idP].PHR_reporting_active == 1) ? 1 /* sizeof(POWER_HEADROOM_CMD)*/: 0;
if ((phr_ce_len > 0) && ((phr_ce_len + phr_header_len + bsr_len) <= buflen)){
phr_len = phr_ce_len + phr_header_len;
LOG_D(MAC,"[UE %d] header size info: PHR len %d (ce%d,hdr%d) buff_len %d\n",
module_idP, phr_len, phr_ce_len, phr_header_len, buflen);
phr_len=0;
// check for UL bandwidth requests and add SR control element
// check for UL bandwidth requests and add SR control element
// Check for DCCH first
// TO DO: Multiplex in the order defined by the logical channel prioritization
for (lcid=DCCH; (lcid < MAX_NUM_LCID) && (is_all_lcid_processed == FALSE) ; lcid++) {
if (UE_mac_inst[module_idP].scheduling_info.LCID_status[lcid] == LCID_NOT_EMPTY) {
is_lcid_processed = FALSE;
lcid_buffer_occupancy_old = mac_rlc_get_buffer_occupancy_ind(module_idP,
UE_mac_inst[module_idP].crnti,
eNB_index,
frameP,
subframe,
ENB_FLAG_NO,
lcid);
lcid_buffer_occupancy_new = lcid_buffer_occupancy_old;
AssertFatal (lcid_buffer_occupancy_new == UE_mac_inst[module_idP].scheduling_info.LCID_buffer_remain[lcid], "LCID=%d RLC has BO %d bytes but MAC has stored %d bytes\n",
lcid,lcid_buffer_occupancy_new,UE_mac_inst[module_idP].scheduling_info.LCID_buffer_remain[lcid]);
AssertFatal (lcid_buffer_occupancy_new <= UE_mac_inst[module_idP].scheduling_info.BSR_bytes[UE_mac_inst[module_idP].scheduling_info.LCGID[lcid]], "LCID=%d RLC has more BO %d bytes than BSR = %d bytes\n",
lcid,lcid_buffer_occupancy_new,UE_mac_inst[module_idP].scheduling_info.BSR_bytes[UE_mac_inst[module_idP].scheduling_info.LCGID[lcid]]);
//Multiplex all available DCCH RLC PDUs considering to multiplex the last PDU each time for maximize the data
//Adjust at the end of the loop
while ((!is_lcid_processed) && (lcid_buffer_occupancy_new) && (bsr_len + phr_len + total_rlc_pdu_header_len + sdu_length_total + MIN_MAC_HDR_RLC_SIZE <= buflen)) {
// Workaround for issue in OAI eNB or EPC which are not able to process SRB2 message multiplexed with SRB1 on the same MAC PDU
if ((usim_test == 0) && (lcid == DCCH1) && (lcid_rlc_pdu_count == 0) && (num_sdus)) {
// Skip SRB2 multiplex if at least one SRB1 SDU is already multiplexed
break;
}
buflen_remain = buflen - (bsr_len + phr_len + total_rlc_pdu_header_len + sdu_length_total + 1);
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LOG_D(MAC, "[UE %d] Frame %d : UL-DXCH -> ULSCH, RLC %d has %d bytes to "
"send (Transport Block size %d BSR size=%d PHR=%d SDU Length Total %d , mac header len %d BSR byte before Tx=%d)\n",
module_idP,frameP, lcid,lcid_buffer_occupancy_new,buflen,bsr_len,phr_len,sdu_length_total,total_rlc_pdu_header_len,UE_mac_inst[module_idP].scheduling_info.BSR_bytes[UE_mac_inst[module_idP].scheduling_info.LCGID[lcid]]);
sdu_lengths[num_sdus] = mac_rlc_data_req(module_idP,
UE_mac_inst[module_idP].crnti,
eNB_index,
frameP,
ENB_FLAG_NO,
MBMS_FLAG_NO,
lcid,
buflen_remain,
(char *)&ulsch_buff[sdu_length_total]);
AssertFatal (buflen_remain >= sdu_lengths[num_sdus], "LCID=%d RLC has segmented %d bytes but MAC has max=%d\n",
lcid,sdu_lengths[num_sdus],buflen_remain);
if (sdu_lengths[num_sdus])
{
sdu_length_total += sdu_lengths[num_sdus];
sdu_lcids[num_sdus] = lcid;
LOG_D(MAC,"[UE %d] TX Multiplex RLC PDU TX Got %d bytes for LcId%d\n",module_idP,sdu_lengths[num_sdus],lcid);
if (buflen == (bsr_len + phr_len + total_rlc_pdu_header_len + sdu_length_total + 1)) {
//No more remaining TBS after this PDU
//exit the function
rlc_pdu_header_len_last = 1;
is_lcid_processed = TRUE;
is_all_lcid_processed = TRUE;
}
else {
rlc_pdu_header_len_last = (sdu_lengths[num_sdus] > 128 ) ? 3 : 2 ;
//Change to 1 byte if it does not fit in the TBS, ie last PDU
if (buflen <= (bsr_len + phr_len + total_rlc_pdu_header_len + rlc_pdu_header_len_last + sdu_length_total)) {
rlc_pdu_header_len_last = 1;
is_lcid_processed = TRUE;
is_all_lcid_processed = TRUE;
}
}
//Update number of SDU
num_sdus ++;
//Update total MAC Header size for RLC PDUs and save last one
total_rlc_pdu_header_len += rlc_pdu_header_len_last;
lcid_rlc_pdu_count ++;
}
else
{
/* avoid infinite loop ... */
is_lcid_processed = TRUE;
}
/* Get updated BO after multiplexing this PDU */
lcid_buffer_occupancy_new = mac_rlc_get_buffer_occupancy_ind(module_idP,
UE_mac_inst[module_idP].crnti,
eNB_index,
frameP,
subframe,
ENB_FLAG_NO,
lcid);
is_lcid_processed = (is_lcid_processed) || (lcid_buffer_occupancy_new <= 0);
//Update Buffer remain and BSR bytes after transmission
AssertFatal (lcid_buffer_occupancy_new <= lcid_buffer_occupancy_old, "MAC UE Tx error : Buffer Occupancy After Tx=%d greater than before=%d BO! for LCID=%d RLC PDU nb=%d Frame %d Subrame %d\n",
lcid_buffer_occupancy_new,lcid_buffer_occupancy_old,lcid,lcid_rlc_pdu_count,frameP,subframe);
UE_mac_inst[module_idP].scheduling_info.LCID_buffer_remain[lcid] = lcid_buffer_occupancy_new;
UE_mac_inst[module_idP].scheduling_info.BSR_bytes[UE_mac_inst[module_idP].scheduling_info.LCGID[lcid]] += (lcid_buffer_occupancy_new - lcid_buffer_occupancy_old);
//Update the number of LCGID with data as BSR shall reflect status after BSR transmission
if ((num_lcg_id_with_data > 1) && (UE_mac_inst[module_idP].scheduling_info.BSR_bytes[UE_mac_inst[module_idP].scheduling_info.LCGID[lcid]] == 0))
{
num_lcg_id_with_data --;
// Change BSR size to BSR SHORT if num_lcg_id_with_data becomes to 1
if ((bsr_len) && (num_lcg_id_with_data == 1))
bsr_ce_len = sizeof(BSR_SHORT);
bsr_len = bsr_ce_len + bsr_header_len;
UE_mac_inst[module_idP].scheduling_info.LCID_status[lcid] = LCID_EMPTY;
}
// Compute BSR Values and update Nb LCGID with data after multiplexing
num_lcg_id_with_data = 0;
lcg_id_bsr_trunc = 0;
for (lcg_id=0;lcg_id<MAX_NUM_LCGID;lcg_id++){
UE_mac_inst[module_idP].scheduling_info.BSR[lcg_id] = locate_BsrIndexByBufferSize(BSR_TABLE, BSR_TABLE_SIZE, UE_mac_inst[module_idP].scheduling_info.BSR_bytes[lcg_id]);
if (UE_mac_inst[module_idP].scheduling_info.BSR_bytes[lcg_id]){
num_lcg_id_with_data ++;
lcg_id_bsr_trunc = lcg_id;
}
LOG_D(MAC,"[UE %d] Remaining Buffer after Tx frame%d subframe %d nb LCG =%d Bytes for LCG0=%d LCG1=%d LCG2=%d LCG3=%d BSR Trigger status =%d TBS=%d\n",
module_idP,
frameP,
subframe,
num_lcg_id_with_data,
UE_mac_inst[module_idP].scheduling_info.BSR_bytes[0],
UE_mac_inst[module_idP].scheduling_info.BSR_bytes[1],
UE_mac_inst[module_idP].scheduling_info.BSR_bytes[2],
UE_mac_inst[module_idP].scheduling_info.BSR_bytes[3],
UE_mac_inst[module_idP].BSR_reporting_active, buflen);
LOG_D(MAC,"[UE %d] Frame %d Subframe %d TX BSR Regular or Periodic size=%d BSR0=%d BSR1=%d BSR2=%d BSR3=%d\n",module_idP,frameP,subframe,bsr_ce_len,
UE_mac_inst[module_idP].scheduling_info.BSR[0],
UE_mac_inst[module_idP].scheduling_info.BSR[1],
UE_mac_inst[module_idP].scheduling_info.BSR[2],
UE_mac_inst[module_idP].scheduling_info.BSR[3]);
}
if (phr_ce_len == sizeof(POWER_HEADROOM_CMD)) {
phr_p->PH = get_phr_mapping(module_idP,CC_id,eNB_index);
phr_p->R = 0;
LOG_D(MAC,"[UE %d] Frame %d report PHR with mapping (%d->%d) for LCID %d\n",
module_idP,frameP, get_PHR(module_idP,CC_id,eNB_index), phr_p->PH,POWER_HEADROOM);
phr_p=NULL;
LOG_T(MAC,"[UE %d] Frame %d: bsr s %p bsr_l %p, phr_p %p\n", module_idP,frameP,bsr_s, bsr_l, phr_p);
// Check BSR padding: it is done after PHR according to Logical Channel Prioritization order
// Check for max padding size, ie MAC Hdr for last RLC PDU = 1
/* For Padding BSR:
- if the number of padding bits is equal to or larger than the size of the Short BSR plus its subheader but smaller than the size of the Long BSR plus its subheader:
- if more than one LCG has data available for transmission in the TTI where the BSR is transmitted: report Truncated BSR of the LCG with the highest priority logical channel with data available for transmission;
- else report Short BSR.
- else if the number of padding bits is equal to or larger than the size of the Long BSR plus its subheader, report Long BSR.
*/
padding_len = buflen - (bsr_len + phr_len + total_rlc_pdu_header_len - rlc_pdu_header_len_last + sdu_length_total + 1);
else {
padding_len = buflen - (bsr_len + phr_len);
}
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if ((padding_len) && (bsr_len == 0))
{
/* if the number of padding bits is equal to or larger than the size of the Long BSR plus its subheader, report Long BSR*/
if (padding_len >= (1+BSR_LONG_SIZE))
{
bsr_ce_len = BSR_LONG_SIZE;
bsr_header_len = 1;
// Trigger BSR Padding
UE_mac_inst[module_idP].BSR_reporting_active |= BSR_TRIGGER_PADDING;
} else if (padding_len >= (1+sizeof(BSR_SHORT))) {
bsr_ce_len = sizeof(BSR_SHORT);
bsr_header_len = 1;
if (num_lcg_id_with_data > 1)
{
// REPORT TRUNCATED BSR
//Get LCGID of highest priority LCID with data
for (lcid=DCCH; lcid < MAX_NUM_LCID ; lcid++) {
if (UE_mac_inst[module_idP].logicalChannelConfig[lcid] != NULL) {
lcg_id = UE_mac_inst[module_idP].scheduling_info.LCGID[lcid];
if ((lcg_id < MAX_NUM_LCGID) && (UE_mac_inst[module_idP].scheduling_info.BSR_bytes[lcg_id])
&& (UE_mac_inst[module_idP].logicalChannelConfig[lcid]->ul_SpecificParameters->priority <= highest_priority)) {
highest_priority = UE_mac_inst[module_idP].logicalChannelConfig[lcid]->ul_SpecificParameters->priority;
lcg_id_bsr_trunc = lcg_id;
}
}
}
}
else
{
//Report SHORT BSR, clear bsr_t
bsr_t = NULL;
}
// Trigger BSR Padding
UE_mac_inst[module_idP].BSR_reporting_active |= BSR_TRIGGER_PADDING;
}
bsr_len = bsr_header_len + bsr_ce_len;
}
//Fill BSR Infos
if (bsr_ce_len == 0 ) {
bsr_s = NULL;
bsr_l = NULL;
bsr_t = NULL;
} else if (bsr_ce_len == BSR_LONG_SIZE) {
bsr_s = NULL;
bsr_t = NULL;
bsr_l->Buffer_size0 = UE_mac_inst[module_idP].scheduling_info.BSR[LCGID0];
bsr_l->Buffer_size1 = UE_mac_inst[module_idP].scheduling_info.BSR[LCGID1];
bsr_l->Buffer_size2 = UE_mac_inst[module_idP].scheduling_info.BSR[LCGID2];
bsr_l->Buffer_size3 = UE_mac_inst[module_idP].scheduling_info.BSR[LCGID3];
LOG_D(MAC, "[UE %d] Frame %d subframe %d BSR Trig=%d report long BSR (level LCGID0 %d,level LCGID1 %d,level LCGID2 %d,level LCGID3 %d)\n", module_idP,frameP,subframe,
UE_mac_inst[module_idP].BSR_reporting_active,
UE_mac_inst[module_idP].scheduling_info.BSR[LCGID0],
UE_mac_inst[module_idP].scheduling_info.BSR[LCGID1],
UE_mac_inst[module_idP].scheduling_info.BSR[LCGID2],
UE_mac_inst[module_idP].scheduling_info.BSR[LCGID3]);
} else if (bsr_ce_len == sizeof(BSR_SHORT)) {
bsr_l = NULL;
if ((bsr_t != NULL) && (UE_mac_inst[module_idP].BSR_reporting_active & BSR_TRIGGER_PADDING)) {
//Truncated BSR
bsr_s = NULL;
bsr_t->LCGID = lcg_id_bsr_trunc;
bsr_t->Buffer_size = UE_mac_inst[module_idP].scheduling_info.BSR[lcg_id_bsr_trunc];
LOG_D(MAC,"[UE %d] Frame %d subframe %d BSR Trig=%d report TRUNCATED BSR with level %d for LCGID %d\n",
module_idP, frameP, subframe, UE_mac_inst[module_idP].BSR_reporting_active, UE_mac_inst[module_idP].scheduling_info.BSR[lcg_id_bsr_trunc],lcg_id_bsr_trunc);
}
else
{
bsr_t = NULL;
bsr_s->LCGID = lcg_id_bsr_trunc;
bsr_s->Buffer_size = UE_mac_inst[module_idP].scheduling_info.BSR[lcg_id_bsr_trunc];
LOG_D(MAC,"[UE %d] Frame %d subframe %d BSR Trig=%d report SHORT BSR with level %d for LCGID %d\n",
module_idP, frameP, subframe, UE_mac_inst[module_idP].BSR_reporting_active, UE_mac_inst[module_idP].scheduling_info.BSR[lcg_id_bsr_trunc],lcg_id_bsr_trunc);
// 1-bit padding or 2-bit padding special padding subheader
// Check for max padding size, ie MAC Hdr for last RLC PDU = 1
if (sdu_length_total) {
padding_len = buflen - (bsr_len + phr_len + total_rlc_pdu_header_len - rlc_pdu_header_len_last + sdu_length_total + 1);
}
else {
padding_len = buflen - (bsr_len + phr_len);
}
if (padding_len <= 2) {
short_padding = padding_len;
// only add padding header
post_padding = 0;
//update total MAC Hdr size for RLC data
if (sdu_length_total) {
total_rlc_pdu_header_len = total_rlc_pdu_header_len - rlc_pdu_header_len_last + 1;
}
else if (sdu_length_total) {
post_padding = buflen - (bsr_len + phr_len + total_rlc_pdu_header_len + sdu_length_total + 1);
// If by adding MAC Hdr for last RLC PDU the padding is 0 then set MAC Hdr for last RLC PDU = 1 and compute 1 or 2 byte padding
if (post_padding == 0) {
total_rlc_pdu_header_len -= rlc_pdu_header_len_last;
padding_len = buflen - (bsr_len + phr_len + total_rlc_pdu_header_len + sdu_length_total + 1);
short_padding = padding_len;
total_rlc_pdu_header_len ++;
}
}
else {
*access_mode=CANCELED_ACCESS;
}
short_padding = 0;
post_padding = buflen - (bsr_len + phr_len + total_rlc_pdu_header_len + sdu_length_total + 1);
// Generate header
// if (num_sdus>0) {
payload_offset = generate_ulsch_header(ulsch_buffer, // mac header
num_sdus, // num sdus
short_padding, // short pading
sdu_lengths, // sdu length
sdu_lcids, // sdu lcid
phr_p, // power headroom
NULL, // crnti
bsr_s, // short bsr
bsr_l,
post_padding); // long_bsr
LOG_D(MAC,
"[UE %d] Generate header :bufflen %d sdu_length_total %d, num_sdus %d, sdu_lengths[0] %d, sdu_lcids[0] %d => payload offset %d, total_rlc_pdu_header_len %d, padding %d,post_padding %d, bsr len %d, phr len %d, reminder %d \n",
module_idP,buflen, sdu_length_total,num_sdus,sdu_lengths[0],sdu_lcids[0],payload_offset, total_rlc_pdu_header_len,
short_padding,post_padding, bsr_len, phr_len,buflen-sdu_length_total-payload_offset);
// cycle through SDUs and place in ulsch_buffer
if (sdu_length_total) {
memcpy(&ulsch_buffer[payload_offset],ulsch_buff,sdu_length_total);
}
// fill remainder of DLSCH with random data
if (post_padding) {
for (j=0; j<(buflen-sdu_length_total-payload_offset); j++) {
ulsch_buffer[payload_offset+sdu_length_total+j] = (char)(taus()&0xff);
}
LOG_D(MAC,"[UE %d][SR] Gave SDU to PHY, clearing any scheduling request\n", module_idP);
UE_mac_inst[module_idP].scheduling_info.SR_pending=0;
UE_mac_inst[module_idP].scheduling_info.SR_COUNTER=0;
/* Actions when a BSR is sent */
if (bsr_ce_len)
{
LOG_D(MAC,"[UE %d] MAC BSR Sent !! bsr (ce%d,hdr%d) buff_len %d\n",
module_idP, bsr_ce_len, bsr_header_len, buflen);
// Reset ReTx BSR Timer
UE_mac_inst[module_idP].scheduling_info.retxBSR_SF = get_sf_retxBSRTimer(UE_mac_inst[module_idP].scheduling_info.retxBSR_Timer);
LOG_D(MAC,"[UE %d] MAC ReTx BSR Timer Reset =%d\n", module_idP,
UE_mac_inst[module_idP].scheduling_info.retxBSR_SF);
// Reset Periodic Timer except when BSR is truncated
if ((bsr_t == NULL) && (UE_mac_inst[module_idP].scheduling_info.periodicBSR_Timer != PeriodicBSR_Timer_r12_infinity))
{
UE_mac_inst[module_idP].scheduling_info.periodicBSR_SF = get_sf_periodicBSRTimer(UE_mac_inst[module_idP].scheduling_info.periodicBSR_Timer);
LOG_D(MAC,"[UE %d] MAC Periodic BSR Timer Reset =%d\n",
module_idP, UE_mac_inst[module_idP].scheduling_info.periodicBSR_SF);
}
// Reset BSR Trigger flags
UE_mac_inst[module_idP].BSR_reporting_active = BSR_TRIGGER_NONE;
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_GET_SDU, VCD_FUNCTION_OUT);
stop_meas(&UE_mac_inst[module_idP].tx_ulsch_sdu);
trace_pdu(0, ulsch_buffer, buflen, 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][ULSCH] Frame %d subframe %d trace pdu for rnti %x with size %d\n",
module_idP, frameP, subframe, UE_mac_inst[module_idP].crnti, buflen);
}
//------------------------------------------------------------------------------
// called at each subframe
// Performs :
// 1. Trigger PDCP every 5ms
// 2. Call RRC for link status return to PHY
// 3. Perform SR/BSR procedures for scheduling feedback
// 4. Perform PHR procedures
UE_L2_STATE_t
ue_scheduler(
const module_id_t module_idP,
const frame_t rxFrameP,
const sub_frame_t rxSubframeP,
const frame_t txFrameP,
const sub_frame_t txSubframeP,
const lte_subframe_t directionP,
const uint8_t eNB_indexP,
const int CC_id)
//------------------------------------------------------------------------------
int lcid; // lcid index
int TTI= 1;
int bucketsizeduration = -1;
int bucketsizeduration_max = -1;
// mac_rlc_status_resp_t rlc_status[MAX_NUM_LCGID]; // 4
struct RACH_ConfigCommon *rach_ConfigCommon = (struct RACH_ConfigCommon *)NULL;
protocol_ctxt_t ctxt;
#if defined(ENABLE_ITTI)
MessageDef *msg_p;
const char *msg_name;
instance_t instance;
int result;
#endif
start_meas(&UE_mac_inst[module_idP].ue_scheduler);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SCHEDULER, VCD_FUNCTION_IN);
PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, module_idP, ENB_FLAG_NO, UE_mac_inst[module_idP].crnti, txFrameP, txSubframeP,eNB_indexP);
#if defined(ENABLE_ITTI)
do {
// Checks if a message has been sent to MAC sub-task
itti_poll_msg (TASK_MAC_UE, &msg_p);
if (msg_p != NULL) {
msg_name = ITTI_MSG_NAME (msg_p);
instance = ITTI_MSG_INSTANCE (msg_p);
winckel
committed
switch (ITTI_MSG_ID(msg_p)) {
case RRC_MAC_CCCH_DATA_REQ:
LOG_I(MAC, "Received %s from %s: instance %d, frameP %d, eNB_index %d\n",
msg_name, ITTI_MSG_ORIGIN_NAME(msg_p), instance,
RRC_MAC_CCCH_DATA_REQ (msg_p).frame, RRC_MAC_CCCH_DATA_REQ (msg_p).enb_index);
winckel
committed
// TODO process CCCH data req.
break;
default:
LOG_E(MAC, "Received unexpected message %s\n", msg_name);
break;
result = itti_free (ITTI_MSG_ORIGIN_ID(msg_p), msg_p);
AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
}
} while(msg_p != NULL);
#endif
//Mac_rlc_xface->frameP=frameP;
//Rrc_xface->Frame_index=Mac_rlc_xface->frameP;
//if (subframe%5 == 0)
pdcp_run(&ctxt);
UE_mac_inst[module_idP].txFrame = txFrameP;
UE_mac_inst[module_idP].txSubframe = txSubframeP;
UE_mac_inst[module_idP].rxFrame = rxFrameP;
UE_mac_inst[module_idP].rxSubframe = rxSubframeP;
#ifdef CELLULAR
rrc_rx_tx(module_idP, txFrameP, 0, eNB_indexP);
#else
eNB_indexP,
CC_id)) {
case RRC_OK:
break;
case RRC_ConnSetup_failed:
LOG_E(MAC,"RRCConnectionSetup failed, returning to IDLE state\n");
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SCHEDULER, VCD_FUNCTION_OUT);
stop_meas(&UE_mac_inst[module_idP].ue_scheduler);
return(CONNECTION_LOST);
break;
case RRC_PHY_RESYNCH:
LOG_E(MAC,"RRC Loss of synch, returning PHY_RESYNCH\n");
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SCHEDULER, VCD_FUNCTION_OUT);
stop_meas(&UE_mac_inst[module_idP].ue_scheduler);
return(PHY_RESYNCH);
nikaeinn
committed
case RRC_Handover_failed:
LOG_N(MAC,"Handover failure for UE %d eNB_index %d\n",module_idP,eNB_indexP);
nikaeinn
committed
//Invalid...need to add another MAC UE state for re-connection procedure
phy_config_afterHO_ue(module_idP,0,eNB_indexP,(MobilityControlInfo_t *)NULL,1);
nikaeinn
committed
//return(3);
break;
nikaeinn
committed
case RRC_HO_STARTED:
LOG_I(MAC,"RRC handover, Instruct PHY to start the contention-free PRACH and synchronization\n");
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SCHEDULER, VCD_FUNCTION_OUT);
stop_meas(&UE_mac_inst[module_idP].ue_scheduler);
nikaeinn
committed
return(PHY_HO_PRACH);
default:
break;
}
#endif
// Check Contention resolution timer (put in a function later)
if (UE_mac_inst[module_idP].RA_contention_resolution_timer_active == 1) {
if (UE_mac_inst[module_idP].radioResourceConfigCommon) {
rach_ConfigCommon = &UE_mac_inst[module_idP].radioResourceConfigCommon->rach_ConfigCommon;
LOG_E(MAC,"FATAL: radioResourceConfigCommon is NULL!!!\n");
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SCHEDULER, VCD_FUNCTION_OUT);
stop_meas(&UE_mac_inst[module_idP].ue_scheduler);
AssertFatal(1==0,"");
//return(RRC_OK);
}
LOG_I(MAC,"Frame %d: Contention resolution timer %d/%ld\n",txFrameP,UE_mac_inst[module_idP].RA_contention_resolution_cnt,
((1+rach_ConfigCommon->ra_SupervisionInfo.mac_ContentionResolutionTimer)<<3));
UE_mac_inst[module_idP].RA_contention_resolution_cnt++;
if (UE_mac_inst[module_idP].RA_contention_resolution_cnt ==
((1+rach_ConfigCommon->ra_SupervisionInfo.mac_ContentionResolutionTimer)<<3)) {
UE_mac_inst[module_idP].RA_active = 0;
UE_mac_inst[module_idP].RA_contention_resolution_timer_active = 0;
// Signal PHY to quit RA procedure
LOG_E(MAC,"Module id %u Contention resolution timer expired, RA failed\n", module_idP);
ra_failed(module_idP,0,eNB_indexP);
}
// Get RLC status info and update Bj for all lcids that are active
if (UE_mac_inst[module_idP].logicalChannelConfig[lcid]) {
// meausre the Bj
if ((directionP == SF_UL)&& (UE_mac_inst[module_idP].scheduling_info.Bj[lcid] >= 0)) {
if (UE_mac_inst[module_idP].logicalChannelConfig[lcid]->ul_SpecificParameters) {
bucketsizeduration = UE_mac_inst[module_idP].logicalChannelConfig[lcid]->ul_SpecificParameters->prioritisedBitRate * TTI;
bucketsizeduration_max = get_ms_bucketsizeduration(UE_mac_inst[module_idP].logicalChannelConfig[lcid]->ul_SpecificParameters->bucketSizeDuration);
} else {
LOG_E(MAC,"[UE %d] lcid %d, NULL ul_SpecificParameters\n",module_idP,lcid);
AssertFatal(1==0,"");
}
if ( UE_mac_inst[module_idP].scheduling_info.Bj[lcid] > bucketsizeduration_max ) {
UE_mac_inst[module_idP].scheduling_info.Bj[lcid] = bucketsizeduration_max;
UE_mac_inst[module_idP].scheduling_info.Bj[lcid] = bucketsizeduration;
}
Bilel
committed
if (lcid == DCCH) {
LOG_D(MAC,"[UE %d][SR] Frame %d subframe %d Pending data for SRB1=%d for LCGID %d \n",
module_idP, txFrameP,txSubframeP,UE_mac_inst[module_idP].scheduling_info.BSR[UE_mac_inst[module_idP].scheduling_info.LCGID[lcid]],
Bilel
committed
// UE_mac_inst[module_idP].scheduling_info.LCGID[lcid]);
// Call BSR procedure as described in Section 5.4.5 in 36.321
// First check ReTxBSR Timer because it is always configured
// Decrement ReTxBSR Timer if it is running and not null
if ((UE_mac_inst[module_idP].scheduling_info.retxBSR_SF != MAC_UE_BSR_TIMER_NOT_RUNNING)
&& (UE_mac_inst[module_idP].scheduling_info.retxBSR_SF != 0)){
UE_mac_inst[module_idP].scheduling_info.retxBSR_SF --;
}
// Decrement Periodic Timer if it is running and not null
if ((UE_mac_inst[module_idP].scheduling_info.periodicBSR_SF != MAC_UE_BSR_TIMER_NOT_RUNNING)
&& (UE_mac_inst[module_idP].scheduling_info.periodicBSR_SF != 0)){
UE_mac_inst[module_idP].scheduling_info.periodicBSR_SF--;
if (update_bsr(module_idP,txFrameP, txSubframeP,eNB_indexP) == TRUE) {
// call SR procedure to generate pending SR and BSR for next PUCCH/PUSCH TxOp. This should implement the procedures
// outlined in Sections 5.4.4 an 5.4.5 of 36.321
UE_mac_inst[module_idP].scheduling_info.SR_pending= 1;
// Regular BSR trigger
UE_mac_inst[module_idP].BSR_reporting_active |= BSR_TRIGGER_REGULAR;
LOG_D(MAC,"[UE %d][BSR] Regular BSR Triggered Frame %d subframe %d SR for PUSCH is pending\n",