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Commit f0c98e2b authored by mjoang's avatar mjoang
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encapsulate mac_ce related logic into separate functionsin nr_ue_get_sdu.

parent d483410e
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openair2/LAYER2/NR_MAC_UE/nr_ue_scheduler.c
View file @ f0c98e2b
...@@ -2349,58 +2349,48 @@ void nr_ue_sib1_scheduler(module_id_t module_idP, ...@@ -2349,58 +2349,48 @@ void nr_ue_sib1_scheduler(module_id_t module_idP,
#define MAX_LCID 8 // NR_MAX_NUM_LCID shall be used but the mac_rlc_data_req function can fetch data for max 8 LCID #define MAX_LCID 8 // NR_MAX_NUM_LCID shall be used but the mac_rlc_data_req function can fetch data for max 8 LCID
typedef struct {
uint8_t bsr_len;
uint8_t bsr_ce_len;
uint8_t bsr_header_len;
uint8_t phr_len;
uint8_t phr_ce_len;
uint8_t phr_header_len;
uint16_t sdu_length_total;
NR_BSR_SHORT *bsr_s;
NR_BSR_LONG *bsr_l;
NR_BSR_SHORT *bsr_t;
//NR_POWER_HEADROOM_CMD *phr_pr;
int tot_mac_ce_len;
uint8_t total_mac_pdu_header_len;
} NR_UE_MAC_CE_INFO;
/** /*
* Function: to fetch data to be transmitted from RLC, place it in the ULSCH PDU buffer nr_ue_get_sdu_mac_ce_pre finds length in various mac_ce field
to generate the complete MAC PDU with sub-headers and MAC CEs according to ULSCH MAC PDU generation (6.1.2 TS 38.321) Need nothing from mac_ce_p:
the selected sub-header for the payload sub-PDUs is NR_MAC_SUBHEADER_LONG Update the following in mac_ce_p:
* @module_idP Module ID bsr_len;
* @CC_id Component Carrier index bsr_ce_len;
* @frameP current UL frame bsr_header_len;
* @subframe current UL slot phr_len; TBD
* @gNB_index gNB index phr_ce_len; TBD
* @ulsch_buffer Pointer to ULSCH PDU phr_header_len; TBD
* @buflen TBS */
*/ int nr_ue_get_sdu_mac_ce_pre(module_id_t module_idP,
uint8_t nr_ue_get_sdu(module_id_t module_idP,
int CC_id, int CC_id,
frame_t frameP, frame_t frameP,
sub_frame_t subframe, sub_frame_t subframe,
uint8_t gNB_index, uint8_t gNB_index,
uint8_t *ulsch_buffer, uint8_t *ulsch_buffer,
uint16_t buflen) { uint16_t buflen,
NR_UE_MAC_CE_INFO *mac_ce_p) {
int16_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;
uint8_t phr_len = 0;
uint8_t lcid = 0;
uint16_t sdu_length = 0;
uint16_t num_sdus = 0;
uint16_t sdu_length_total = 0;
NR_BSR_SHORT bsr_short, bsr_truncated;
NR_BSR_LONG bsr_long;
NR_BSR_SHORT *bsr_s = &bsr_short;
NR_BSR_LONG *bsr_l = &bsr_long;
NR_BSR_SHORT *bsr_t = &bsr_truncated;
//NR_POWER_HEADROOM_CMD phr;
//NR_POWER_HEADROOM_CMD *phr_p = &phr;
unsigned short padding_len = 0;
NR_UE_MAC_INST_t *mac = get_mac_inst(module_idP); NR_UE_MAC_INST_t *mac = get_mac_inst(module_idP);
// Compute header length
int lcg_id = 0;
int lcg_id_bsr_trunc = 0;
//int highest_priority = 16;
int num_lcg_id_with_data = 0;
const uint8_t sh_size = sizeof(NR_MAC_SUBHEADER_LONG);
// Pointer used to build the MAC PDU by placing the RLC SDUs in the ULSCH buffer
uint8_t *pdu = ulsch_buffer;
int num_lcg_id_with_data = 0;
// Preparing the MAC CEs sub-PDUs and get the total size // Preparing the MAC CEs sub-PDUs and get the total size
bsr_header_len = 0; mac_ce_p->bsr_header_len = 0;
//phr_header_len = 1; //sizeof(SCH_SUBHEADER_FIXED); mac_ce_p->phr_header_len = 0; //sizeof(SCH_SUBHEADER_FIXED);
int lcg_id = 0;
while (lcg_id < NR_MAX_NUM_LCGID) { while (lcg_id < NR_MAX_NUM_LCGID) {
if (mac->scheduling_info.BSR_bytes[lcg_id]) { if (mac->scheduling_info.BSR_bytes[lcg_id]) {
num_lcg_id_with_data++; num_lcg_id_with_data++;
...@@ -2433,20 +2423,238 @@ uint8_t nr_ue_get_sdu(module_id_t module_idP, ...@@ -2433,20 +2423,238 @@ uint8_t nr_ue_get_sdu(module_id_t module_idP,
//A Regular or Periodic BSR can only be sent if TBS is sufficient as transmitting only a BSR is not allowed if UE has data to transmit //A Regular or Periodic BSR can only be sent if TBS is sufficient as transmitting only a BSR is not allowed if UE has data to transmit
if (num_lcg_id_with_data <= 1) { if (num_lcg_id_with_data <= 1) {
if (buflen >= (sizeof(NR_BSR_SHORT)+sizeof(NR_MAC_SUBHEADER_FIXED)+1)) { if (buflen >= (sizeof(NR_BSR_SHORT)+sizeof(NR_MAC_SUBHEADER_FIXED)+1)) {
bsr_ce_len = sizeof(NR_BSR_SHORT); //1 byte mac_ce_p->bsr_ce_len = sizeof(NR_BSR_SHORT); //1 byte
bsr_header_len = sizeof(NR_MAC_SUBHEADER_FIXED); //1 byte mac_ce_p->bsr_header_len = sizeof(NR_MAC_SUBHEADER_FIXED); //1 byte
} }
} else { } else {
if (buflen >= (num_lcg_id_with_data+1+sizeof(NR_MAC_SUBHEADER_SHORT)+1)) { if (buflen >= (num_lcg_id_with_data+1+sizeof(NR_MAC_SUBHEADER_SHORT)+1)) {
bsr_ce_len = num_lcg_id_with_data + 1; //variable size mac_ce_p->bsr_ce_len = num_lcg_id_with_data + 1; //variable size
bsr_header_len = sizeof(NR_MAC_SUBHEADER_SHORT); //2 bytes mac_ce_p->bsr_header_len = sizeof(NR_MAC_SUBHEADER_SHORT); //2 bytes
}
}
}
mac_ce_p->bsr_len = mac_ce_p->bsr_ce_len + mac_ce_p->bsr_header_len;
return (mac_ce_p->bsr_len + mac_ce_p->phr_len);
}
/*
nr_ue_get_sdu_mac_ce_post recalculates length and prepares the mac_ce field
Need the following from mac_ce_p:
bsr_ce_len
bsr_len
sdu_length_total
total_mac_pdu_header_len
Update the following in mac_ce_p:
bsr_ce_len
bsr_header_len
bsr_len
tot_mac_ce_len
total_mac_pdu_header_len
bsr_s
bsr_l
bsr_t
*/
void nr_ue_get_sdu_mac_ce_post(module_id_t module_idP,
int CC_id,
frame_t frameP,
sub_frame_t subframe,
uint8_t gNB_index,
uint8_t *ulsch_buffer,
uint16_t buflen,
NR_UE_MAC_CE_INFO *mac_ce_p) {
NR_UE_MAC_INST_t *mac = get_mac_inst(module_idP);
// Compute BSR Values and update Nb LCGID with data after multiplexing
unsigned short padding_len = 0;
uint8_t lcid = 0;
int lcg_id = 0;
int num_lcg_id_with_data = 0;
int lcg_id_bsr_trunc = 0;
for (lcg_id = 0; lcg_id < NR_MAX_NUM_LCGID; lcg_id++) {
if (mac_ce_p->bsr_ce_len == sizeof(NR_BSR_SHORT)) {
mac->scheduling_info.BSR[lcg_id] = nr_locate_BsrIndexByBufferSize(NR_SHORT_BSR_TABLE, NR_SHORT_BSR_TABLE_SIZE, mac->scheduling_info.BSR_bytes[lcg_id]);
} else {
mac->scheduling_info.BSR[lcg_id] = nr_locate_BsrIndexByBufferSize(NR_LONG_BSR_TABLE, NR_LONG_BSR_TABLE_SIZE, mac->scheduling_info.BSR_bytes[lcg_id]);
}
if (mac->scheduling_info.BSR_bytes[lcg_id]) {
num_lcg_id_with_data++;
lcg_id_bsr_trunc = lcg_id;
}
}
// TS 38.321 Section 5.4.5
// 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.
*/
if (mac_ce_p->sdu_length_total) {
padding_len = buflen - (mac_ce_p->total_mac_pdu_header_len + mac_ce_p->sdu_length_total);
}
if ((padding_len) && (mac_ce_p->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 >= (num_lcg_id_with_data+1+sizeof(NR_MAC_SUBHEADER_SHORT))) {
mac_ce_p->bsr_ce_len = num_lcg_id_with_data + 1; //variable size
mac_ce_p->bsr_header_len = sizeof(NR_MAC_SUBHEADER_SHORT); //2 bytes
// Trigger BSR Padding
mac->BSR_reporting_active |= NR_BSR_TRIGGER_PADDING;
} else if (padding_len >= (sizeof(NR_BSR_SHORT)+sizeof(NR_MAC_SUBHEADER_FIXED))) {
mac_ce_p->bsr_ce_len = sizeof(NR_BSR_SHORT); //1 byte
mac_ce_p->bsr_header_len = sizeof(NR_MAC_SUBHEADER_FIXED); //1 byte
if (num_lcg_id_with_data > 1) {
// REPORT SHORT TRUNCATED BSR
//Get LCGID of highest priority LCID with data (todo)
for (lcid = DCCH; lcid < NR_MAX_NUM_LCID; lcid++) {
lcg_id = mac->scheduling_info.LCGID[lcid];
if ((lcg_id < NR_MAX_NUM_LCGID) && (mac->scheduling_info.BSR_bytes[lcg_id])) {
lcg_id_bsr_trunc = lcg_id;
}
}
} else {
//Report SHORT BSR, clear bsr_t
mac_ce_p->bsr_t = NULL;
} }
// Trigger BSR Padding
mac->BSR_reporting_active |= NR_BSR_TRIGGER_PADDING;
} }
mac_ce_p->bsr_len = mac_ce_p->bsr_header_len + mac_ce_p->bsr_ce_len;
mac_ce_p->tot_mac_ce_len += mac_ce_p->bsr_len;
mac_ce_p->total_mac_pdu_header_len += mac_ce_p->bsr_len;
} }
bsr_len = bsr_ce_len + bsr_header_len; //Fill BSR Infos
int tot_mac_ce_len = bsr_len + phr_len; if (mac_ce_p->bsr_ce_len == 0) {
uint8_t total_mac_pdu_header_len = tot_mac_ce_len; mac_ce_p->bsr_s = NULL;
mac_ce_p->bsr_l = NULL;
mac_ce_p->bsr_t = NULL;
} else if (mac_ce_p->bsr_header_len == sizeof(NR_MAC_SUBHEADER_SHORT)) {
mac_ce_p->bsr_s = NULL;
mac_ce_p->bsr_t = NULL;
mac_ce_p->bsr_l->Buffer_size0 = mac->scheduling_info.BSR[0];
mac_ce_p->bsr_l->Buffer_size1 = mac->scheduling_info.BSR[1];
mac_ce_p->bsr_l->Buffer_size2 = mac->scheduling_info.BSR[2];
mac_ce_p->bsr_l->Buffer_size3 = mac->scheduling_info.BSR[3];
mac_ce_p->bsr_l->Buffer_size4 = mac->scheduling_info.BSR[4];
mac_ce_p->bsr_l->Buffer_size5 = mac->scheduling_info.BSR[5];
mac_ce_p->bsr_l->Buffer_size6 = mac->scheduling_info.BSR[6];
mac_ce_p->bsr_l->Buffer_size7 = mac->scheduling_info.BSR[7];
LOG_D(NR_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 level LCGID4 %d,level LCGID5 %d,level LCGID6 %d,level LCGID7 %d)\n",
module_idP, frameP, subframe,
mac->BSR_reporting_active,
mac->scheduling_info.BSR[0],
mac->scheduling_info.BSR[1],
mac->scheduling_info.BSR[2],
mac->scheduling_info.BSR[3],
mac->scheduling_info.BSR[4],
mac->scheduling_info.BSR[5],
mac->scheduling_info.BSR[6],
mac->scheduling_info.BSR[7]);
} else if (mac_ce_p->bsr_header_len == sizeof(NR_MAC_SUBHEADER_FIXED)) {
mac_ce_p->bsr_l = NULL;
if ((mac_ce_p->bsr_t != NULL) && (mac->BSR_reporting_active & NR_BSR_TRIGGER_PADDING)) {
//Truncated BSR
mac_ce_p->bsr_s = NULL;
mac_ce_p->bsr_t->LcgID = lcg_id_bsr_trunc;
mac_ce_p->bsr_t->Buffer_size = mac->scheduling_info.BSR[lcg_id_bsr_trunc];
LOG_D(NR_MAC, "[UE %d] Frame %d subframe %d BSR Trig=%d report TRUNCATED BSR with level %d for LCGID %d\n",
module_idP, frameP, subframe,
mac->BSR_reporting_active,
mac->scheduling_info.BSR[lcg_id_bsr_trunc], lcg_id_bsr_trunc);
} else {
mac_ce_p->bsr_t = NULL;
mac_ce_p->bsr_s->LcgID = lcg_id_bsr_trunc;
mac_ce_p->bsr_s->Buffer_size = mac->scheduling_info.BSR[lcg_id_bsr_trunc];
LOG_D(NR_MAC, "[UE %d] Frame %d subframe %d BSR Trig=%d report SHORT BSR with level %d for LCGID %d\n",
module_idP, frameP, subframe,
mac->BSR_reporting_active,
mac->scheduling_info.BSR[lcg_id_bsr_trunc], lcg_id_bsr_trunc);
}
}
LOG_D(NR_MAC, "[UE %d][SR] Gave SDU to PHY, clearing any scheduling request\n", module_idP);
mac->scheduling_info.SR_pending = 0;
mac->scheduling_info.SR_COUNTER = 0;
/* Actions when a BSR is sent */
if (mac_ce_p->bsr_ce_len) {
LOG_D(NR_MAC, "[UE %d] MAC BSR Sent !! bsr (ce%d,hdr%d) buff_len %d\n",
module_idP, mac_ce_p->bsr_ce_len, mac_ce_p->bsr_header_len, buflen);
// Reset ReTx BSR Timer
mac->scheduling_info.retxBSR_SF = nr_get_sf_retxBSRTimer(mac->scheduling_info.retxBSR_Timer);
LOG_D(NR_MAC, "[UE %d] MAC ReTx BSR Timer Reset =%d\n", module_idP, mac->scheduling_info.retxBSR_SF);
// Reset Periodic Timer except when BSR is truncated
if ((mac_ce_p->bsr_t == NULL) && (mac->scheduling_info.periodicBSR_Timer != NR_BSR_Config__periodicBSR_Timer_infinity)) {
mac->scheduling_info.periodicBSR_SF = nr_get_sf_periodicBSRTimer(mac->scheduling_info.periodicBSR_Timer);
LOG_D(NR_MAC, "[UE %d] MAC Periodic BSR Timer Reset =%d\n",
module_idP,
mac->scheduling_info.periodicBSR_SF);
}
// Reset BSR Trigger flags
mac->BSR_reporting_active = BSR_TRIGGER_NONE;
}
}
/**
* Function: to fetch data to be transmitted from RLC, place it in the ULSCH PDU buffer
to generate the complete MAC PDU with sub-headers and MAC CEs according to ULSCH MAC PDU generation (6.1.2 TS 38.321)
the selected sub-header for the payload sub-PDUs is NR_MAC_SUBHEADER_LONG
* @module_idP Module ID
* @CC_id Component Carrier index
* @frameP current UL frame
* @subframe current UL slot
* @gNB_index gNB index
* @ulsch_buffer Pointer to ULSCH PDU
* @buflen TBS
*/
uint8_t nr_ue_get_sdu(module_id_t module_idP,
int CC_id,
frame_t frameP,
sub_frame_t subframe,
uint8_t gNB_index,
uint8_t *ulsch_buffer,
uint16_t buflen) {
NR_UE_MAC_CE_INFO mac_ce_info;
NR_UE_MAC_CE_INFO *mac_ce_p=&mac_ce_info;
int16_t buflen_remain = 0;
mac_ce_p->bsr_len = 0;
mac_ce_p->bsr_ce_len = 0;
mac_ce_p->bsr_header_len = 0;
mac_ce_p->phr_len = 0;
//mac_ce_p->phr_ce_len = 0;
//mac_ce_p->phr_header_len = 0;
uint8_t lcid = 0;
uint16_t sdu_length = 0;
uint16_t num_sdus = 0;
mac_ce_p->sdu_length_total = 0;
NR_BSR_SHORT bsr_short, bsr_truncated;
NR_BSR_LONG bsr_long;
mac_ce_p->bsr_s = &bsr_short;
mac_ce_p->bsr_l = &bsr_long;
mac_ce_p->bsr_t = &bsr_truncated;
//NR_POWER_HEADROOM_CMD phr;
//mac_ce_p->phr_p = &phr;
NR_UE_MAC_INST_t *mac = get_mac_inst(module_idP);
//int highest_priority = 16;
const uint8_t sh_size = sizeof(NR_MAC_SUBHEADER_LONG);
// Pointer used to build the MAC PDU by placing the RLC SDUs in the ULSCH buffer
uint8_t *pdu = ulsch_buffer;
//nr_ue_get_sdu_mac_ce_pre updates all mac_ce related header field related to length
mac_ce_p->tot_mac_ce_len = nr_ue_get_sdu_mac_ce_pre(module_idP, CC_id, frameP, subframe, gNB_index, ulsch_buffer, buflen, mac_ce_p);
mac_ce_p->total_mac_pdu_header_len = mac_ce_p->tot_mac_ce_len;
LOG_D(NR_MAC, "In %s: [UE %d] [%d.%d] process UL transport block at with size TBS = %d bytes \n", __FUNCTION__, module_idP, frameP, subframe, buflen); LOG_D(NR_MAC, "In %s: [UE %d] [%d.%d] process UL transport block at with size TBS = %d bytes \n", __FUNCTION__, module_idP, frameP, subframe, buflen);
...@@ -2454,7 +2662,7 @@ uint8_t nr_ue_get_sdu(module_id_t module_idP, ...@@ -2454,7 +2662,7 @@ uint8_t nr_ue_get_sdu(module_id_t module_idP,
// TO DO: Multiplex in the order defined by the logical channel prioritization // TO DO: Multiplex in the order defined by the logical channel prioritization
for (lcid = UL_SCH_LCID_SRB1; lcid < MAX_LCID; lcid++) { for (lcid = UL_SCH_LCID_SRB1; lcid < MAX_LCID; lcid++) {
buflen_remain = buflen - (total_mac_pdu_header_len + sdu_length_total + sh_size); buflen_remain = buflen - (mac_ce_p->total_mac_pdu_header_len + mac_ce_p->sdu_length_total + sh_size);
LOG_D(NR_MAC, "In %s: [UE %d] [%d.%d] UL-DXCH -> ULSCH, RLC with LCID 0x%02x (TBS %d bytes, sdu_length_total %d bytes, MAC header len %d bytes, buflen_remain %d bytes)\n", LOG_D(NR_MAC, "In %s: [UE %d] [%d.%d] UL-DXCH -> ULSCH, RLC with LCID 0x%02x (TBS %d bytes, sdu_length_total %d bytes, MAC header len %d bytes, buflen_remain %d bytes)\n",
__FUNCTION__, __FUNCTION__,
...@@ -2463,8 +2671,8 @@ uint8_t nr_ue_get_sdu(module_id_t module_idP, ...@@ -2463,8 +2671,8 @@ uint8_t nr_ue_get_sdu(module_id_t module_idP,
subframe, subframe,
lcid, lcid,
buflen, buflen,
sdu_length_total, mac_ce_p->sdu_length_total,
tot_mac_ce_len, mac_ce_p->tot_mac_ce_len,
buflen_remain); buflen_remain);
while (buflen_remain > 0){ while (buflen_remain > 0){
...@@ -2514,8 +2722,8 @@ uint8_t nr_ue_get_sdu(module_id_t module_idP, ...@@ -2514,8 +2722,8 @@ uint8_t nr_ue_get_sdu(module_id_t module_idP,
#endif #endif
pdu += sdu_length; pdu += sdu_length;
sdu_length_total += sdu_length; mac_ce_p->sdu_length_total += sdu_length;
total_mac_pdu_header_len += sh_size; mac_ce_p->total_mac_pdu_header_len += sh_size;
num_sdus++; num_sdus++;
...@@ -2525,160 +2733,37 @@ uint8_t nr_ue_get_sdu(module_id_t module_idP, ...@@ -2525,160 +2733,37 @@ uint8_t nr_ue_get_sdu(module_id_t module_idP,
break; break;
} }
buflen_remain = buflen - (total_mac_pdu_header_len + sdu_length_total + sh_size); buflen_remain = buflen - (mac_ce_p->total_mac_pdu_header_len + mac_ce_p->sdu_length_total + sh_size);
//Update Buffer remain and BSR bytes after transmission //Update Buffer remain and BSR bytes after transmission
mac->scheduling_info.LCID_buffer_remain[lcid] -= sdu_length; mac->scheduling_info.LCID_buffer_remain[lcid] -= sdu_length;
mac->scheduling_info.BSR_bytes[mac->scheduling_info.LCGID[lcid]] -= sdu_length; mac->scheduling_info.BSR_bytes[mac->scheduling_info.LCGID[lcid]] -= sdu_length;
LOG_D(NR_MAC, "[UE %d] Update BSR [%d.%d] num_lcg_id_with_data %d. BSR_bytes for LCG%d=%d\n", LOG_D(NR_MAC, "[UE %d] Update BSR [%d.%d] BSR_bytes for LCG%d=%d\n",
module_idP, frameP, subframe, num_lcg_id_with_data, mac->scheduling_info.LCGID[lcid], module_idP, frameP, subframe, mac->scheduling_info.LCGID[lcid],
mac->scheduling_info.BSR_bytes[mac->scheduling_info.LCGID[lcid]]); mac->scheduling_info.BSR_bytes[mac->scheduling_info.LCGID[lcid]]);
if (mac->scheduling_info.BSR_bytes[mac->scheduling_info.LCGID[lcid]] < 0) if (mac->scheduling_info.BSR_bytes[mac->scheduling_info.LCGID[lcid]] < 0)
mac->scheduling_info.BSR_bytes[mac->scheduling_info.LCGID[lcid]] = 0; mac->scheduling_info.BSR_bytes[mac->scheduling_info.LCGID[lcid]] = 0;
//Update the number of LCGID with data as BSR shall reflect status after BSR transmission
if ((num_lcg_id_with_data > 1) && (mac-> scheduling_info.BSR_bytes[mac->scheduling_info.LCGID[lcid]] == 0)) {
num_lcg_id_with_data--;
}
} }
} }
// Compute BSR Values and update Nb LCGID with data after multiplexing //nr_ue_get_sdu_mac_ce_post recalculates all mac_ce related header fields since buffer has been changed after mac_rlc_data_req.
num_lcg_id_with_data = 0; //Also, BSR padding is handled here after knowing mac_ce_p->sdu_length_total.
lcg_id_bsr_trunc = 0; nr_ue_get_sdu_mac_ce_post(module_idP, CC_id, frameP, subframe, gNB_index, ulsch_buffer, buflen, mac_ce_p);
for (lcg_id = 0; lcg_id < NR_MAX_NUM_LCGID; lcg_id++) {
if (bsr_ce_len == sizeof(NR_BSR_SHORT)) {
mac->scheduling_info.BSR[lcg_id] = nr_locate_BsrIndexByBufferSize(NR_SHORT_BSR_TABLE, NR_SHORT_BSR_TABLE_SIZE, mac->scheduling_info.BSR_bytes[lcg_id]);
} else {
mac->scheduling_info.BSR[lcg_id] =
nr_locate_BsrIndexByBufferSize(NR_LONG_BSR_TABLE, NR_LONG_BSR_TABLE_SIZE, mac->scheduling_info.BSR_bytes[lcg_id]);
}
if (mac->scheduling_info.BSR_bytes[lcg_id]) {
num_lcg_id_with_data++;
lcg_id_bsr_trunc = lcg_id;
}
}
// TS 38.321 Section 5.4.5 if (mac_ce_p->tot_mac_ce_len > 0) {
// 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.
*/
if (sdu_length_total) {
padding_len = buflen - (total_mac_pdu_header_len + sdu_length_total);
}
if ((padding_len) && (bsr_len == 0)) { LOG_D(NR_MAC, "In %s copying %d bytes of MAC CEs to the UL PDU \n", __FUNCTION__, mac_ce_p->tot_mac_ce_len);
/* if the number of padding bits is equal to or larger than the size of the Long BSR plus its subheader, report Long BSR */ nr_write_ce_ulsch_pdu(pdu, mac, 0, NULL, mac_ce_p->bsr_t, mac_ce_p->bsr_s, mac_ce_p->bsr_l);
if (padding_len >= (num_lcg_id_with_data+1+sizeof(NR_MAC_SUBHEADER_SHORT))) { pdu += (unsigned char) mac_ce_p->tot_mac_ce_len;
bsr_ce_len = num_lcg_id_with_data + 1; //variable size
bsr_header_len = sizeof(NR_MAC_SUBHEADER_SHORT); //2 bytes
// Trigger BSR Padding
mac->BSR_reporting_active |= NR_BSR_TRIGGER_PADDING;
} else if (padding_len >= (sizeof(NR_BSR_SHORT)+sizeof(NR_MAC_SUBHEADER_FIXED))) {
bsr_ce_len = sizeof(NR_BSR_SHORT); //1 byte
bsr_header_len = sizeof(NR_MAC_SUBHEADER_FIXED); //1 byte
if (num_lcg_id_with_data > 1) {
// REPORT SHORT TRUNCATED BSR
//Get LCGID of highest priority LCID with data (todo)
for (lcid = DCCH; lcid < NR_MAX_NUM_LCID; lcid++) {
lcg_id = mac->scheduling_info.LCGID[lcid];
if ((lcg_id < NR_MAX_NUM_LCGID) && (mac->scheduling_info.BSR_bytes[lcg_id])) {
lcg_id_bsr_trunc = lcg_id;
}
}
} else {
//Report SHORT BSR, clear bsr_t
bsr_t = NULL;
}
// Trigger BSR Padding
mac->BSR_reporting_active |= NR_BSR_TRIGGER_PADDING;
}
bsr_len = bsr_header_len + bsr_ce_len;
tot_mac_ce_len += bsr_len;
total_mac_pdu_header_len += bsr_len;
}
//Fill BSR Infos
if (bsr_ce_len == 0) {
bsr_s = NULL;
bsr_l = NULL;
bsr_t = NULL;
} else if (bsr_header_len == sizeof(NR_MAC_SUBHEADER_SHORT)) {
bsr_s = NULL;
bsr_t = NULL;
bsr_l->Buffer_size0 =
mac->scheduling_info.BSR[0];
bsr_l->Buffer_size1 =
mac->scheduling_info.BSR[1];
bsr_l->Buffer_size2 =
mac->scheduling_info.BSR[2];
bsr_l->Buffer_size3 =
mac->scheduling_info.BSR[3];
bsr_l->Buffer_size4 =
mac->scheduling_info.BSR[4];
bsr_l->Buffer_size5 =
mac->scheduling_info.BSR[5];
bsr_l->Buffer_size6 =
mac->scheduling_info.BSR[6];
bsr_l->Buffer_size7 =
mac->scheduling_info.BSR[7];
LOG_D(NR_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 level LCGID4 %d,level LCGID5 %d,level LCGID6 %d,level LCGID7 %d)\n",
module_idP, frameP, subframe,
mac->BSR_reporting_active,
mac->scheduling_info.BSR[0],
mac->scheduling_info.BSR[1],
mac->scheduling_info.BSR[2],
mac->scheduling_info.BSR[3],
mac->scheduling_info.BSR[4],
mac->scheduling_info.BSR[5],
mac->scheduling_info.BSR[6],
mac->scheduling_info.BSR[7]);
} else if (bsr_header_len == sizeof(NR_MAC_SUBHEADER_FIXED)) {
bsr_l = NULL;
if ((bsr_t != NULL) && (mac->BSR_reporting_active & NR_BSR_TRIGGER_PADDING)) {
//Truncated BSR
bsr_s = NULL;
bsr_t->LcgID = lcg_id_bsr_trunc;
bsr_t->Buffer_size = mac->scheduling_info.BSR[lcg_id_bsr_trunc];
LOG_D(NR_MAC, "[UE %d] Frame %d subframe %d BSR Trig=%d report TRUNCATED BSR with level %d for LCGID %d\n",
module_idP, frameP, subframe,
mac->BSR_reporting_active,
mac->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 = mac->scheduling_info.BSR[lcg_id_bsr_trunc];
LOG_D(NR_MAC, "[UE %d] Frame %d subframe %d BSR Trig=%d report SHORT BSR with level %d for LCGID %d\n",
module_idP, frameP, subframe,
mac->BSR_reporting_active,
mac->scheduling_info.BSR[lcg_id_bsr_trunc], lcg_id_bsr_trunc);
}
}
if (tot_mac_ce_len > 0) {
LOG_D(NR_MAC, "In %s copying %d bytes of MAC CEs to the UL PDU \n", __FUNCTION__, tot_mac_ce_len);
nr_write_ce_ulsch_pdu(pdu, mac, 0, NULL, bsr_t, bsr_s, bsr_l);
pdu += (unsigned char) tot_mac_ce_len;
#ifdef ENABLE_MAC_PAYLOAD_DEBUG #ifdef ENABLE_MAC_PAYLOAD_DEBUG
LOG_I(NR_MAC, "In %s: dumping MAC CE with length tot_mac_ce_len %d: \n", __FUNCTION__, tot_mac_ce_len); LOG_I(NR_MAC, "In %s: dumping MAC CE with length tot_mac_ce_len %d: \n", __FUNCTION__, mac_ce_p->tot_mac_ce_len);
log_dump(NR_MAC, mac_header_control_elements, tot_mac_ce_len, LOG_DUMP_CHAR, "\n"); log_dump(NR_MAC, mac_header_control_elements, mac_ce_p->tot_mac_ce_len, LOG_DUMP_CHAR, "\n");
#endif #endif
} }
buflen_remain = buflen - (total_mac_pdu_header_len + sdu_length_total); buflen_remain = buflen - (mac_ce_p->total_mac_pdu_header_len + mac_ce_p->sdu_length_total);
// Compute final offset for padding and fill remainder of ULSCH with 0 // Compute final offset for padding and fill remainder of ULSCH with 0
if (buflen_remain > 0) { if (buflen_remain > 0) {
...@@ -2715,30 +2800,6 @@ uint8_t nr_ue_get_sdu(module_id_t module_idP, ...@@ -2715,30 +2800,6 @@ uint8_t nr_ue_get_sdu(module_id_t module_idP,
log_dump(NR_MAC, ulsch_buffer, buflen, LOG_DUMP_CHAR, "\n"); log_dump(NR_MAC, ulsch_buffer, buflen, LOG_DUMP_CHAR, "\n");
#endif #endif
LOG_D(NR_MAC, "[UE %d][SR] Gave SDU to PHY, clearing any scheduling request\n", module_idP);
mac->scheduling_info.SR_pending = 0;
mac->scheduling_info.SR_COUNTER = 0;
/* Actions when a BSR is sent */
if (bsr_ce_len) {
LOG_D(NR_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
mac->scheduling_info.retxBSR_SF = nr_get_sf_retxBSRTimer(mac->scheduling_info.retxBSR_Timer);
LOG_D(NR_MAC, "[UE %d] MAC ReTx BSR Timer Reset =%d\n", module_idP, mac->scheduling_info.retxBSR_SF);
// Reset Periodic Timer except when BSR is truncated
if ((bsr_t == NULL) && (mac->scheduling_info.periodicBSR_Timer != NR_BSR_Config__periodicBSR_Timer_infinity)) {
mac->scheduling_info.periodicBSR_SF = nr_get_sf_periodicBSRTimer(mac->scheduling_info.periodicBSR_Timer);
LOG_D(NR_MAC, "[UE %d] MAC Periodic BSR Timer Reset =%d\n",
module_idP,
mac->scheduling_info.periodicBSR_SF);
}
// Reset BSR Trigger flags
mac->BSR_reporting_active = BSR_TRIGGER_NONE;
}
return num_sdus > 0 ? 1 : 0; return num_sdus > 0 ? 1 : 0;
} }
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