A Discrete-Event Network Simulator
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tdbet-ff-mac-scheduler.cc
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1/*
2 * Copyright (c) 2011 Centre Tecnologic de Telecomunicacions de Catalunya (CTTC)
3 *
4 * SPDX-License-Identifier: GPL-2.0-only
5 *
6 * Author: Marco Miozzo <marco.miozzo@cttc.es>
7 * Modification: Dizhi Zhou <dizhi.zhou@gmail.com> // modify codes related to downlink scheduler
8 */
9
11
12#include "lte-amc.h"
14
15#include <ns3/boolean.h>
16#include <ns3/log.h>
17#include <ns3/math.h>
18#include <ns3/pointer.h>
19#include <ns3/simulator.h>
20
21#include <cfloat>
22#include <set>
23
24namespace ns3
25{
26
27NS_LOG_COMPONENT_DEFINE("TdBetFfMacScheduler");
28
29/// TDBET type 0 allocation RBG
30static const int TdBetType0AllocationRbg[4] = {
31 10, // RBG size 1
32 26, // RBG size 2
33 63, // RBG size 3
34 110, // RBG size 4
35}; // see table 7.1.6.1-1 of 36.213
36
37NS_OBJECT_ENSURE_REGISTERED(TdBetFfMacScheduler);
38
40 : m_cschedSapUser(nullptr),
41 m_schedSapUser(nullptr),
42 m_timeWindow(99.0),
43 m_nextRntiUl(0)
44{
48}
49
54
55void
69
72{
73 static TypeId tid =
74 TypeId("ns3::TdBetFfMacScheduler")
76 .SetGroupName("Lte")
77 .AddConstructor<TdBetFfMacScheduler>()
78 .AddAttribute("CqiTimerThreshold",
79 "The number of TTIs a CQI is valid (default 1000 - 1 sec.)",
80 UintegerValue(1000),
83 .AddAttribute("HarqEnabled",
84 "Activate/Deactivate the HARQ [by default is active].",
85 BooleanValue(true),
88 .AddAttribute("UlGrantMcs",
89 "The MCS of the UL grant, must be [0..15] (default 0)",
93 return tid;
94}
95
96void
101
102void
107
113
119
120void
125
131
132void
144
145void
148{
149 NS_LOG_FUNCTION(this << " RNTI " << params.m_rnti << " txMode "
150 << (uint16_t)params.m_transmissionMode);
151 auto it = m_uesTxMode.find(params.m_rnti);
152 if (it == m_uesTxMode.end())
153 {
154 m_uesTxMode[params.m_rnti] = params.m_transmissionMode;
155 // generate HARQ buffers
156 m_dlHarqCurrentProcessId[params.m_rnti] = 0;
157 DlHarqProcessesStatus_t dlHarqPrcStatus;
158 dlHarqPrcStatus.resize(8, 0);
159 m_dlHarqProcessesStatus[params.m_rnti] = dlHarqPrcStatus;
160 DlHarqProcessesTimer_t dlHarqProcessesTimer;
161 dlHarqProcessesTimer.resize(8, 0);
162 m_dlHarqProcessesTimer[params.m_rnti] = dlHarqProcessesTimer;
164 dlHarqdci.resize(8);
165 m_dlHarqProcessesDciBuffer[params.m_rnti] = dlHarqdci;
166 DlHarqRlcPduListBuffer_t dlHarqRlcPdu;
167 dlHarqRlcPdu.resize(2);
168 dlHarqRlcPdu.at(0).resize(8);
169 dlHarqRlcPdu.at(1).resize(8);
170 m_dlHarqProcessesRlcPduListBuffer[params.m_rnti] = dlHarqRlcPdu;
171 m_ulHarqCurrentProcessId[params.m_rnti] = 0;
172 UlHarqProcessesStatus_t ulHarqPrcStatus;
173 ulHarqPrcStatus.resize(8, 0);
174 m_ulHarqProcessesStatus[params.m_rnti] = ulHarqPrcStatus;
176 ulHarqdci.resize(8);
177 m_ulHarqProcessesDciBuffer[params.m_rnti] = ulHarqdci;
178 }
179 else
180 {
181 (*it).second = params.m_transmissionMode;
182 }
183}
184
185void
188{
189 NS_LOG_FUNCTION(this << " New LC, rnti: " << params.m_rnti);
190
191 for (std::size_t i = 0; i < params.m_logicalChannelConfigList.size(); i++)
192 {
193 auto it = m_flowStatsDl.find(params.m_rnti);
194
195 if (it == m_flowStatsDl.end())
196 {
197 tdbetsFlowPerf_t flowStatsDl;
198 flowStatsDl.flowStart = Simulator::Now();
199 flowStatsDl.totalBytesTransmitted = 0;
200 flowStatsDl.lastTtiBytesTransmitted = 0;
201 flowStatsDl.lastAveragedThroughput = 1;
202 m_flowStatsDl[params.m_rnti] = flowStatsDl;
203 tdbetsFlowPerf_t flowStatsUl;
204 flowStatsUl.flowStart = Simulator::Now();
205 flowStatsUl.totalBytesTransmitted = 0;
206 flowStatsUl.lastTtiBytesTransmitted = 0;
207 flowStatsUl.lastAveragedThroughput = 1;
208 m_flowStatsUl[params.m_rnti] = flowStatsUl;
209 }
210 }
211}
212
213void
216{
217 NS_LOG_FUNCTION(this);
218 for (std::size_t i = 0; i < params.m_logicalChannelIdentity.size(); i++)
219 {
220 auto it = m_rlcBufferReq.begin();
221 while (it != m_rlcBufferReq.end())
222 {
223 if (((*it).first.m_rnti == params.m_rnti) &&
224 ((*it).first.m_lcId == params.m_logicalChannelIdentity.at(i)))
225 {
226 auto temp = it;
227 it++;
228 m_rlcBufferReq.erase(temp);
229 }
230 else
231 {
232 it++;
233 }
234 }
235 }
236}
237
238void
241{
242 NS_LOG_FUNCTION(this);
243
244 m_uesTxMode.erase(params.m_rnti);
245 m_dlHarqCurrentProcessId.erase(params.m_rnti);
246 m_dlHarqProcessesStatus.erase(params.m_rnti);
247 m_dlHarqProcessesTimer.erase(params.m_rnti);
248 m_dlHarqProcessesDciBuffer.erase(params.m_rnti);
249 m_dlHarqProcessesRlcPduListBuffer.erase(params.m_rnti);
250 m_ulHarqCurrentProcessId.erase(params.m_rnti);
251 m_ulHarqProcessesStatus.erase(params.m_rnti);
252 m_ulHarqProcessesDciBuffer.erase(params.m_rnti);
253 m_flowStatsDl.erase(params.m_rnti);
254 m_flowStatsUl.erase(params.m_rnti);
255 m_ceBsrRxed.erase(params.m_rnti);
256 auto it = m_rlcBufferReq.begin();
257 while (it != m_rlcBufferReq.end())
258 {
259 if ((*it).first.m_rnti == params.m_rnti)
260 {
261 auto temp = it;
262 it++;
263 m_rlcBufferReq.erase(temp);
264 }
265 else
266 {
267 it++;
268 }
269 }
270 if (m_nextRntiUl == params.m_rnti)
271 {
272 m_nextRntiUl = 0;
273 }
274}
275
276void
279{
280 NS_LOG_FUNCTION(this << params.m_rnti << (uint32_t)params.m_logicalChannelIdentity);
281 // API generated by RLC for updating RLC parameters on a LC (tx and retx queues)
282
283 LteFlowId_t flow(params.m_rnti, params.m_logicalChannelIdentity);
284
285 auto it = m_rlcBufferReq.find(flow);
286
287 if (it == m_rlcBufferReq.end())
288 {
289 m_rlcBufferReq[flow] = params;
290 }
291 else
292 {
293 (*it).second = params;
294 }
295}
296
297void
304
305void
312
313int
315{
316 for (int i = 0; i < 4; i++)
317 {
318 if (dlbandwidth < TdBetType0AllocationRbg[i])
319 {
320 return i + 1;
321 }
322 }
323
324 return -1;
325}
326
327unsigned int
329{
330 unsigned int lcActive = 0;
331 for (auto it = m_rlcBufferReq.begin(); it != m_rlcBufferReq.end(); it++)
332 {
333 if (((*it).first.m_rnti == rnti) && (((*it).second.m_rlcTransmissionQueueSize > 0) ||
334 ((*it).second.m_rlcRetransmissionQueueSize > 0) ||
335 ((*it).second.m_rlcStatusPduSize > 0)))
336 {
337 lcActive++;
338 }
339 if ((*it).first.m_rnti > rnti)
340 {
341 break;
342 }
343 }
344 return lcActive;
345}
346
347bool
349{
350 NS_LOG_FUNCTION(this << rnti);
351
352 auto it = m_dlHarqCurrentProcessId.find(rnti);
353 if (it == m_dlHarqCurrentProcessId.end())
354 {
355 NS_FATAL_ERROR("No Process Id found for this RNTI " << rnti);
356 }
357 auto itStat = m_dlHarqProcessesStatus.find(rnti);
358 if (itStat == m_dlHarqProcessesStatus.end())
359 {
360 NS_FATAL_ERROR("No Process Id Statusfound for this RNTI " << rnti);
361 }
362 uint8_t i = (*it).second;
363 do
364 {
365 i = (i + 1) % HARQ_PROC_NUM;
366 } while (((*itStat).second.at(i) != 0) && (i != (*it).second));
367
368 return (*itStat).second.at(i) == 0;
369}
370
371uint8_t
373{
374 NS_LOG_FUNCTION(this << rnti);
375
376 if (!m_harqOn)
377 {
378 return 0;
379 }
380
381 auto it = m_dlHarqCurrentProcessId.find(rnti);
382 if (it == m_dlHarqCurrentProcessId.end())
383 {
384 NS_FATAL_ERROR("No Process Id found for this RNTI " << rnti);
385 }
386 auto itStat = m_dlHarqProcessesStatus.find(rnti);
387 if (itStat == m_dlHarqProcessesStatus.end())
388 {
389 NS_FATAL_ERROR("No Process Id Statusfound for this RNTI " << rnti);
390 }
391 uint8_t i = (*it).second;
392 do
393 {
394 i = (i + 1) % HARQ_PROC_NUM;
395 } while (((*itStat).second.at(i) != 0) && (i != (*it).second));
396 if ((*itStat).second.at(i) == 0)
397 {
398 (*it).second = i;
399 (*itStat).second.at(i) = 1;
400 }
401 else
402 {
403 NS_FATAL_ERROR("No HARQ process available for RNTI "
404 << rnti << " check before update with HarqProcessAvailability");
405 }
406
407 return (*it).second;
408}
409
410void
412{
413 NS_LOG_FUNCTION(this);
414
415 for (auto itTimers = m_dlHarqProcessesTimer.begin(); itTimers != m_dlHarqProcessesTimer.end();
416 itTimers++)
417 {
418 for (uint16_t i = 0; i < HARQ_PROC_NUM; i++)
419 {
420 if ((*itTimers).second.at(i) == HARQ_DL_TIMEOUT)
421 {
422 // reset HARQ process
423
424 NS_LOG_DEBUG(this << " Reset HARQ proc " << i << " for RNTI " << (*itTimers).first);
425 auto itStat = m_dlHarqProcessesStatus.find((*itTimers).first);
426 if (itStat == m_dlHarqProcessesStatus.end())
427 {
428 NS_FATAL_ERROR("No Process Id Status found for this RNTI "
429 << (*itTimers).first);
430 }
431 (*itStat).second.at(i) = 0;
432 (*itTimers).second.at(i) = 0;
433 }
434 else
435 {
436 (*itTimers).second.at(i)++;
437 }
438 }
439 }
440}
441
442void
445{
446 NS_LOG_FUNCTION(this << " Frame no. " << (params.m_sfnSf >> 4) << " subframe no. "
447 << (0xF & params.m_sfnSf));
448 // API generated by RLC for triggering the scheduling of a DL subframe
449
450 // evaluate the relative channel quality indicator for each UE per each RBG
451 // (since we are using allocation type 0 the small unit of allocation is RBG)
452 // Resource allocation type 0 (see sec 7.1.6.1 of 36.213)
453
455
457 int rbgNum = m_cschedCellConfig.m_dlBandwidth / rbgSize;
458 std::map<uint16_t, std::vector<uint16_t>> allocationMap; // RBs map per RNTI
459 std::vector<bool> rbgMap; // global RBGs map
460 uint16_t rbgAllocatedNum = 0;
461 std::set<uint16_t> rntiAllocated;
462 rbgMap.resize(m_cschedCellConfig.m_dlBandwidth / rbgSize, false);
464
465 // update UL HARQ proc id
466 for (auto itProcId = m_ulHarqCurrentProcessId.begin();
467 itProcId != m_ulHarqCurrentProcessId.end();
468 itProcId++)
469 {
470 (*itProcId).second = ((*itProcId).second + 1) % HARQ_PROC_NUM;
471 }
472
473 // RACH Allocation
475 uint16_t rbStart = 0;
476 for (auto itRach = m_rachList.begin(); itRach != m_rachList.end(); itRach++)
477 {
479 (*itRach).m_estimatedSize,
480 " Default UL Grant MCS does not allow to send RACH messages");
482 newRar.m_rnti = (*itRach).m_rnti;
483 // DL-RACH Allocation
484 // Ideal: no needs of configuring m_dci
485 // UL-RACH Allocation
486 newRar.m_grant.m_rnti = newRar.m_rnti;
487 newRar.m_grant.m_mcs = m_ulGrantMcs;
488 uint16_t rbLen = 1;
489 uint16_t tbSizeBits = 0;
490 // find lowest TB size that fits UL grant estimated size
491 while ((tbSizeBits < (*itRach).m_estimatedSize) &&
492 (rbStart + rbLen < m_cschedCellConfig.m_ulBandwidth))
493 {
494 rbLen++;
495 tbSizeBits = m_amc->GetUlTbSizeFromMcs(m_ulGrantMcs, rbLen);
496 }
497 if (tbSizeBits < (*itRach).m_estimatedSize)
498 {
499 // no more allocation space: finish allocation
500 break;
501 }
502 newRar.m_grant.m_rbStart = rbStart;
503 newRar.m_grant.m_rbLen = rbLen;
504 newRar.m_grant.m_tbSize = tbSizeBits / 8;
505 newRar.m_grant.m_hopping = false;
506 newRar.m_grant.m_tpc = 0;
507 newRar.m_grant.m_cqiRequest = false;
508 newRar.m_grant.m_ulDelay = false;
509 NS_LOG_INFO(this << " UL grant allocated to RNTI " << (*itRach).m_rnti << " rbStart "
510 << rbStart << " rbLen " << rbLen << " MCS " << m_ulGrantMcs << " tbSize "
511 << newRar.m_grant.m_tbSize);
512 for (uint16_t i = rbStart; i < rbStart + rbLen; i++)
513 {
514 m_rachAllocationMap.at(i) = (*itRach).m_rnti;
515 }
516
517 if (m_harqOn)
518 {
519 // generate UL-DCI for HARQ retransmissions
520 UlDciListElement_s uldci;
521 uldci.m_rnti = newRar.m_rnti;
522 uldci.m_rbLen = rbLen;
523 uldci.m_rbStart = rbStart;
524 uldci.m_mcs = m_ulGrantMcs;
525 uldci.m_tbSize = tbSizeBits / 8;
526 uldci.m_ndi = 1;
527 uldci.m_cceIndex = 0;
528 uldci.m_aggrLevel = 1;
529 uldci.m_ueTxAntennaSelection = 3; // antenna selection OFF
530 uldci.m_hopping = false;
531 uldci.m_n2Dmrs = 0;
532 uldci.m_tpc = 0; // no power control
533 uldci.m_cqiRequest = false; // only period CQI at this stage
534 uldci.m_ulIndex = 0; // TDD parameter
535 uldci.m_dai = 1; // TDD parameter
536 uldci.m_freqHopping = 0;
537 uldci.m_pdcchPowerOffset = 0; // not used
538
539 uint8_t harqId = 0;
540 auto itProcId = m_ulHarqCurrentProcessId.find(uldci.m_rnti);
541 if (itProcId == m_ulHarqCurrentProcessId.end())
542 {
543 NS_FATAL_ERROR("No info find in HARQ buffer for UE " << uldci.m_rnti);
544 }
545 harqId = (*itProcId).second;
546 auto itDci = m_ulHarqProcessesDciBuffer.find(uldci.m_rnti);
547 if (itDci == m_ulHarqProcessesDciBuffer.end())
548 {
549 NS_FATAL_ERROR("Unable to find RNTI entry in UL DCI HARQ buffer for RNTI "
550 << uldci.m_rnti);
551 }
552 (*itDci).second.at(harqId) = uldci;
553 }
554
555 rbStart = rbStart + rbLen;
556 ret.m_buildRarList.push_back(newRar);
557 }
558 m_rachList.clear();
559
560 // Process DL HARQ feedback
562 // retrieve past HARQ retx buffered
563 if (!m_dlInfoListBuffered.empty())
564 {
565 if (!params.m_dlInfoList.empty())
566 {
567 NS_LOG_INFO(this << " Received DL-HARQ feedback");
569 params.m_dlInfoList.begin(),
570 params.m_dlInfoList.end());
571 }
572 }
573 else
574 {
575 if (!params.m_dlInfoList.empty())
576 {
577 m_dlInfoListBuffered = params.m_dlInfoList;
578 }
579 }
580 if (!m_harqOn)
581 {
582 // Ignore HARQ feedback
583 m_dlInfoListBuffered.clear();
584 }
585 std::vector<DlInfoListElement_s> dlInfoListUntxed;
586 for (std::size_t i = 0; i < m_dlInfoListBuffered.size(); i++)
587 {
588 auto itRnti = rntiAllocated.find(m_dlInfoListBuffered.at(i).m_rnti);
589 if (itRnti != rntiAllocated.end())
590 {
591 // RNTI already allocated for retx
592 continue;
593 }
594 auto nLayers = m_dlInfoListBuffered.at(i).m_harqStatus.size();
595 std::vector<bool> retx;
596 NS_LOG_INFO(this << " Processing DLHARQ feedback");
597 if (nLayers == 1)
598 {
599 retx.push_back(m_dlInfoListBuffered.at(i).m_harqStatus.at(0) ==
601 retx.push_back(false);
602 }
603 else
604 {
605 retx.push_back(m_dlInfoListBuffered.at(i).m_harqStatus.at(0) ==
607 retx.push_back(m_dlInfoListBuffered.at(i).m_harqStatus.at(1) ==
609 }
610 if (retx.at(0) || retx.at(1))
611 {
612 // retrieve HARQ process information
613 uint16_t rnti = m_dlInfoListBuffered.at(i).m_rnti;
614 uint8_t harqId = m_dlInfoListBuffered.at(i).m_harqProcessId;
615 NS_LOG_INFO(this << " HARQ retx RNTI " << rnti << " harqId " << (uint16_t)harqId);
616 auto itHarq = m_dlHarqProcessesDciBuffer.find(rnti);
617 if (itHarq == m_dlHarqProcessesDciBuffer.end())
618 {
619 NS_FATAL_ERROR("No info find in HARQ buffer for UE " << rnti);
620 }
621
622 DlDciListElement_s dci = (*itHarq).second.at(harqId);
623 int rv = 0;
624 if (dci.m_rv.size() == 1)
625 {
626 rv = dci.m_rv.at(0);
627 }
628 else
629 {
630 rv = (dci.m_rv.at(0) > dci.m_rv.at(1) ? dci.m_rv.at(0) : dci.m_rv.at(1));
631 }
632
633 if (rv == 3)
634 {
635 // maximum number of retx reached -> drop process
636 NS_LOG_INFO("Maximum number of retransmissions reached -> drop process");
637 auto it = m_dlHarqProcessesStatus.find(rnti);
638 if (it == m_dlHarqProcessesStatus.end())
639 {
640 NS_LOG_ERROR("No info find in HARQ buffer for UE (might change eNB) "
641 << m_dlInfoListBuffered.at(i).m_rnti);
642 }
643 (*it).second.at(harqId) = 0;
644 auto itRlcPdu = m_dlHarqProcessesRlcPduListBuffer.find(rnti);
645 if (itRlcPdu == m_dlHarqProcessesRlcPduListBuffer.end())
646 {
647 NS_FATAL_ERROR("Unable to find RlcPdcList in HARQ buffer for RNTI "
648 << m_dlInfoListBuffered.at(i).m_rnti);
649 }
650 for (std::size_t k = 0; k < (*itRlcPdu).second.size(); k++)
651 {
652 (*itRlcPdu).second.at(k).at(harqId).clear();
653 }
654 continue;
655 }
656 // check the feasibility of retransmitting on the same RBGs
657 // translate the DCI to Spectrum framework
658 std::vector<int> dciRbg;
659 uint32_t mask = 0x1;
660 NS_LOG_INFO("Original RBGs " << dci.m_rbBitmap << " rnti " << dci.m_rnti);
661 for (int j = 0; j < 32; j++)
662 {
663 if (((dci.m_rbBitmap & mask) >> j) == 1)
664 {
665 dciRbg.push_back(j);
666 NS_LOG_INFO("\t" << j);
667 }
668 mask = (mask << 1);
669 }
670 bool free = true;
671 for (std::size_t j = 0; j < dciRbg.size(); j++)
672 {
673 if (rbgMap.at(dciRbg.at(j)))
674 {
675 free = false;
676 break;
677 }
678 }
679 if (free)
680 {
681 // use the same RBGs for the retx
682 // reserve RBGs
683 for (std::size_t j = 0; j < dciRbg.size(); j++)
684 {
685 rbgMap.at(dciRbg.at(j)) = true;
686 NS_LOG_INFO("RBG " << dciRbg.at(j) << " assigned");
687 rbgAllocatedNum++;
688 }
689
690 NS_LOG_INFO(this << " Send retx in the same RBGs");
691 }
692 else
693 {
694 // find RBGs for sending HARQ retx
695 uint8_t j = 0;
696 uint8_t rbgId = (dciRbg.at(dciRbg.size() - 1) + 1) % rbgNum;
697 uint8_t startRbg = dciRbg.at(dciRbg.size() - 1);
698 std::vector<bool> rbgMapCopy = rbgMap;
699 while ((j < dciRbg.size()) && (startRbg != rbgId))
700 {
701 if (!rbgMapCopy.at(rbgId))
702 {
703 rbgMapCopy.at(rbgId) = true;
704 dciRbg.at(j) = rbgId;
705 j++;
706 }
707 rbgId = (rbgId + 1) % rbgNum;
708 }
709 if (j == dciRbg.size())
710 {
711 // find new RBGs -> update DCI map
712 uint32_t rbgMask = 0;
713 for (std::size_t k = 0; k < dciRbg.size(); k++)
714 {
715 rbgMask = rbgMask + (0x1 << dciRbg.at(k));
716 rbgAllocatedNum++;
717 }
718 dci.m_rbBitmap = rbgMask;
719 rbgMap = rbgMapCopy;
720 NS_LOG_INFO(this << " Move retx in RBGs " << dciRbg.size());
721 }
722 else
723 {
724 // HARQ retx cannot be performed on this TTI -> store it
725 dlInfoListUntxed.push_back(m_dlInfoListBuffered.at(i));
726 NS_LOG_INFO(this << " No resource for this retx -> buffer it");
727 }
728 }
729 // retrieve RLC PDU list for retx TBsize and update DCI
731 auto itRlcPdu = m_dlHarqProcessesRlcPduListBuffer.find(rnti);
732 if (itRlcPdu == m_dlHarqProcessesRlcPduListBuffer.end())
733 {
734 NS_FATAL_ERROR("Unable to find RlcPdcList in HARQ buffer for RNTI " << rnti);
735 }
736 for (std::size_t j = 0; j < nLayers; j++)
737 {
738 if (retx.at(j))
739 {
740 if (j >= dci.m_ndi.size())
741 {
742 // for avoiding errors in MIMO transient phases
743 dci.m_ndi.push_back(0);
744 dci.m_rv.push_back(0);
745 dci.m_mcs.push_back(0);
746 dci.m_tbsSize.push_back(0);
747 NS_LOG_INFO(this << " layer " << (uint16_t)j
748 << " no txed (MIMO transition)");
749 }
750 else
751 {
752 dci.m_ndi.at(j) = 0;
753 dci.m_rv.at(j)++;
754 (*itHarq).second.at(harqId).m_rv.at(j)++;
755 NS_LOG_INFO(this << " layer " << (uint16_t)j << " RV "
756 << (uint16_t)dci.m_rv.at(j));
757 }
758 }
759 else
760 {
761 // empty TB of layer j
762 dci.m_ndi.at(j) = 0;
763 dci.m_rv.at(j) = 0;
764 dci.m_mcs.at(j) = 0;
765 dci.m_tbsSize.at(j) = 0;
766 NS_LOG_INFO(this << " layer " << (uint16_t)j << " no retx");
767 }
768 }
769 for (std::size_t k = 0; k < (*itRlcPdu).second.at(0).at(dci.m_harqProcess).size(); k++)
770 {
771 std::vector<RlcPduListElement_s> rlcPduListPerLc;
772 for (std::size_t j = 0; j < nLayers; j++)
773 {
774 if (retx.at(j))
775 {
776 if (j < dci.m_ndi.size())
777 {
778 NS_LOG_INFO(" layer " << (uint16_t)j << " tb size "
779 << dci.m_tbsSize.at(j));
780 rlcPduListPerLc.push_back(
781 (*itRlcPdu).second.at(j).at(dci.m_harqProcess).at(k));
782 }
783 }
784 else
785 { // if no retx needed on layer j, push an RlcPduListElement_s object with
786 // m_size=0 to keep the size of rlcPduListPerLc vector = 2 in case of MIMO
787 NS_LOG_INFO(" layer " << (uint16_t)j << " tb size " << dci.m_tbsSize.at(j));
788 RlcPduListElement_s emptyElement;
789 emptyElement.m_logicalChannelIdentity = (*itRlcPdu)
790 .second.at(j)
791 .at(dci.m_harqProcess)
792 .at(k)
793 .m_logicalChannelIdentity;
794 emptyElement.m_size = 0;
795 rlcPduListPerLc.push_back(emptyElement);
796 }
797 }
798
799 if (!rlcPduListPerLc.empty())
800 {
801 newEl.m_rlcPduList.push_back(rlcPduListPerLc);
802 }
803 }
804 newEl.m_rnti = rnti;
805 newEl.m_dci = dci;
806 (*itHarq).second.at(harqId).m_rv = dci.m_rv;
807 // refresh timer
808 auto itHarqTimer = m_dlHarqProcessesTimer.find(rnti);
809 if (itHarqTimer == m_dlHarqProcessesTimer.end())
810 {
811 NS_FATAL_ERROR("Unable to find HARQ timer for RNTI " << (uint16_t)rnti);
812 }
813 (*itHarqTimer).second.at(harqId) = 0;
814 ret.m_buildDataList.push_back(newEl);
815 rntiAllocated.insert(rnti);
816 }
817 else
818 {
819 // update HARQ process status
820 NS_LOG_INFO(this << " HARQ received ACK for UE " << m_dlInfoListBuffered.at(i).m_rnti);
821 auto it = m_dlHarqProcessesStatus.find(m_dlInfoListBuffered.at(i).m_rnti);
822 if (it == m_dlHarqProcessesStatus.end())
823 {
824 NS_FATAL_ERROR("No info find in HARQ buffer for UE "
825 << m_dlInfoListBuffered.at(i).m_rnti);
826 }
827 (*it).second.at(m_dlInfoListBuffered.at(i).m_harqProcessId) = 0;
828 auto itRlcPdu =
830 if (itRlcPdu == m_dlHarqProcessesRlcPduListBuffer.end())
831 {
832 NS_FATAL_ERROR("Unable to find RlcPdcList in HARQ buffer for RNTI "
833 << m_dlInfoListBuffered.at(i).m_rnti);
834 }
835 for (std::size_t k = 0; k < (*itRlcPdu).second.size(); k++)
836 {
837 (*itRlcPdu).second.at(k).at(m_dlInfoListBuffered.at(i).m_harqProcessId).clear();
838 }
839 }
840 }
841 m_dlInfoListBuffered.clear();
842 m_dlInfoListBuffered = dlInfoListUntxed;
843
844 if (rbgAllocatedNum == rbgNum)
845 {
846 // all the RBGs are already allocated -> exit
847 if (!ret.m_buildDataList.empty() || !ret.m_buildRarList.empty())
848 {
850 }
851 return;
852 }
853
854 auto itMax = m_flowStatsDl.end();
855 double metricMax = 0.0;
856 for (auto it = m_flowStatsDl.begin(); it != m_flowStatsDl.end(); it++)
857 {
858 // check first what are channel conditions for this UE, if CQI!=0
859 auto itCqi = m_p10CqiRxed.find((*it).first);
860 auto itTxMode = m_uesTxMode.find((*it).first);
861 if (itTxMode == m_uesTxMode.end())
862 {
863 NS_FATAL_ERROR("No Transmission Mode info on user " << (*it).first);
864 }
865 auto nLayer = TransmissionModesLayers::TxMode2LayerNum((*itTxMode).second);
866
867 uint8_t cqiSum = 0;
868 for (uint8_t j = 0; j < nLayer; j++)
869 {
870 if (itCqi == m_p10CqiRxed.end())
871 {
872 cqiSum += 1; // no info on this user -> lowest MCS
873 }
874 else
875 {
876 cqiSum = (*itCqi).second;
877 }
878 }
879 if (cqiSum == 0)
880 {
881 NS_LOG_INFO("Skip this flow, CQI==0, rnti:" << (*it).first);
882 continue;
883 }
884
885 auto itRnti = rntiAllocated.find((*it).first);
886 if ((itRnti != rntiAllocated.end()) || (!HarqProcessAvailability((*it).first)))
887 {
888 // UE already allocated for HARQ or without HARQ process available -> drop it
889 if (itRnti != rntiAllocated.end())
890 {
891 NS_LOG_DEBUG(this << " RNTI discarded for HARQ tx" << (uint16_t)(*it).first);
892 }
893 if (!HarqProcessAvailability((*it).first))
894 {
895 NS_LOG_DEBUG(this << " RNTI discarded for HARQ id" << (uint16_t)(*it).first);
896 }
897 continue;
898 }
899
900 double metric = 1 / (*it).second.lastAveragedThroughput;
901
902 if (metric > metricMax)
903 {
904 metricMax = metric;
905 itMax = it;
906 }
907 } // end for m_flowStatsDl
908
909 if (itMax == m_flowStatsDl.end())
910 {
911 // no UE available for downlink
912 return;
913 }
914 else
915 {
916 // assign all RBGs to this UE
917 std::vector<uint16_t> tempMap;
918 tempMap.reserve(rbgNum);
919 for (int i = 0; i < rbgNum; i++)
920 {
921 tempMap.push_back(i);
922 }
923 allocationMap[(*itMax).first] = tempMap;
924 }
925
926 // reset TTI stats of users
927 for (auto itStats = m_flowStatsDl.begin(); itStats != m_flowStatsDl.end(); itStats++)
928 {
929 (*itStats).second.lastTtiBytesTransmitted = 0;
930 }
931
932 // generate the transmission opportunities by grouping the RBGs of the same RNTI and
933 // creating the correspondent DCIs
934 auto itMap = allocationMap.begin();
935 while (itMap != allocationMap.end())
936 {
937 // create new BuildDataListElement_s for this LC
939 newEl.m_rnti = (*itMap).first;
940 // create the DlDciListElement_s
941 DlDciListElement_s newDci;
942 newDci.m_rnti = (*itMap).first;
943 newDci.m_harqProcess = UpdateHarqProcessId((*itMap).first);
944
945 uint16_t lcActives = LcActivePerFlow((*itMap).first);
946 NS_LOG_INFO(this << "Allocate user " << newEl.m_rnti << " rbg " << lcActives);
947 if (lcActives == 0)
948 {
949 // Set to max value, to avoid divide by 0 below
950 lcActives = (uint16_t)65535; // UINT16_MAX;
951 }
952 uint16_t RbgPerRnti = (*itMap).second.size();
953 auto itCqi = m_p10CqiRxed.find((*itMap).first);
954 auto itTxMode = m_uesTxMode.find((*itMap).first);
955 if (itTxMode == m_uesTxMode.end())
956 {
957 NS_FATAL_ERROR("No Transmission Mode info on user " << (*itMap).first);
958 }
959 auto nLayer = TransmissionModesLayers::TxMode2LayerNum((*itTxMode).second);
960
961 uint32_t bytesTxed = 0;
962 for (uint8_t j = 0; j < nLayer; j++)
963 {
964 if (itCqi == m_p10CqiRxed.end())
965 {
966 newDci.m_mcs.push_back(0); // no info on this user -> lowest MCS
967 }
968 else
969 {
970 newDci.m_mcs.push_back(m_amc->GetMcsFromCqi((*itCqi).second));
971 }
972
973 int tbSize = (m_amc->GetDlTbSizeFromMcs(newDci.m_mcs.at(j), RbgPerRnti * rbgSize) /
974 8); // (size of TB in bytes according to table 7.1.7.2.1-1 of 36.213)
975 newDci.m_tbsSize.push_back(tbSize);
976 bytesTxed += tbSize;
977 }
978
979 newDci.m_resAlloc = 0; // only allocation type 0 at this stage
980 newDci.m_rbBitmap = 0; // TBD (32 bit bitmap see 7.1.6 of 36.213)
981 uint32_t rbgMask = 0;
982 for (std::size_t k = 0; k < (*itMap).second.size(); k++)
983 {
984 rbgMask = rbgMask + (0x1 << (*itMap).second.at(k));
985 NS_LOG_INFO(this << " Allocated RBG " << (*itMap).second.at(k));
986 }
987 newDci.m_rbBitmap = rbgMask; // (32 bit bitmap see 7.1.6 of 36.213)
988
989 // create the rlc PDUs -> equally divide resources among actives LCs
990 for (auto itBufReq = m_rlcBufferReq.begin(); itBufReq != m_rlcBufferReq.end(); itBufReq++)
991 {
992 if (((*itBufReq).first.m_rnti == (*itMap).first) &&
993 (((*itBufReq).second.m_rlcTransmissionQueueSize > 0) ||
994 ((*itBufReq).second.m_rlcRetransmissionQueueSize > 0) ||
995 ((*itBufReq).second.m_rlcStatusPduSize > 0)))
996 {
997 std::vector<RlcPduListElement_s> newRlcPduLe;
998 for (uint8_t j = 0; j < nLayer; j++)
999 {
1000 RlcPduListElement_s newRlcEl;
1001 newRlcEl.m_logicalChannelIdentity = (*itBufReq).first.m_lcId;
1002 newRlcEl.m_size = newDci.m_tbsSize.at(j) / lcActives;
1003 NS_LOG_INFO(this << " LCID " << (uint32_t)newRlcEl.m_logicalChannelIdentity
1004 << " size " << newRlcEl.m_size << " layer " << (uint16_t)j);
1005 newRlcPduLe.push_back(newRlcEl);
1007 newRlcEl.m_logicalChannelIdentity,
1008 newRlcEl.m_size);
1009 if (m_harqOn)
1010 {
1011 // store RLC PDU list for HARQ
1012 auto itRlcPdu = m_dlHarqProcessesRlcPduListBuffer.find((*itMap).first);
1013 if (itRlcPdu == m_dlHarqProcessesRlcPduListBuffer.end())
1014 {
1015 NS_FATAL_ERROR("Unable to find RlcPdcList in HARQ buffer for RNTI "
1016 << (*itMap).first);
1017 }
1018 (*itRlcPdu).second.at(j).at(newDci.m_harqProcess).push_back(newRlcEl);
1019 }
1020 }
1021 newEl.m_rlcPduList.push_back(newRlcPduLe);
1022 }
1023 if ((*itBufReq).first.m_rnti > (*itMap).first)
1024 {
1025 break;
1026 }
1027 }
1028 for (uint8_t j = 0; j < nLayer; j++)
1029 {
1030 newDci.m_ndi.push_back(1);
1031 newDci.m_rv.push_back(0);
1032 }
1033
1034 newDci.m_tpc = 1; // 1 is mapped to 0 in Accumulated Mode and to -1 in Absolute Mode
1035
1036 newEl.m_dci = newDci;
1037
1038 if (m_harqOn)
1039 {
1040 // store DCI for HARQ
1041 auto itDci = m_dlHarqProcessesDciBuffer.find(newEl.m_rnti);
1042 if (itDci == m_dlHarqProcessesDciBuffer.end())
1043 {
1044 NS_FATAL_ERROR("Unable to find RNTI entry in DCI HARQ buffer for RNTI "
1045 << newEl.m_rnti);
1046 }
1047 (*itDci).second.at(newDci.m_harqProcess) = newDci;
1048 // refresh timer
1049 auto itHarqTimer = m_dlHarqProcessesTimer.find(newEl.m_rnti);
1050 if (itHarqTimer == m_dlHarqProcessesTimer.end())
1051 {
1052 NS_FATAL_ERROR("Unable to find HARQ timer for RNTI " << (uint16_t)newEl.m_rnti);
1053 }
1054 (*itHarqTimer).second.at(newDci.m_harqProcess) = 0;
1055 }
1056
1057 // ...more parameters -> ignored in this version
1058
1059 ret.m_buildDataList.push_back(newEl);
1060 // update UE stats
1061 auto it = m_flowStatsDl.find((*itMap).first);
1062 if (it != m_flowStatsDl.end())
1063 {
1064 (*it).second.lastTtiBytesTransmitted = bytesTxed;
1065 NS_LOG_INFO(this << " UE total bytes txed " << (*it).second.lastTtiBytesTransmitted);
1066 }
1067 else
1068 {
1069 NS_FATAL_ERROR(this << " No Stats for this allocated UE");
1070 }
1071
1072 itMap++;
1073 } // end while allocation
1074 ret.m_nrOfPdcchOfdmSymbols = 1; /// \todo check correct value according the DCIs txed
1075
1076 // update UEs stats
1077 NS_LOG_INFO(this << " Update UEs statistics");
1078 for (auto itStats = m_flowStatsDl.begin(); itStats != m_flowStatsDl.end(); itStats++)
1079 {
1080 (*itStats).second.totalBytesTransmitted += (*itStats).second.lastTtiBytesTransmitted;
1081 // update average throughput (see eq. 12.3 of Sec 12.3.1.2 of LTE – The UMTS Long Term
1082 // Evolution, Ed Wiley)
1083 (*itStats).second.lastAveragedThroughput =
1084 ((1.0 - (1.0 / m_timeWindow)) * (*itStats).second.lastAveragedThroughput) +
1085 ((1.0 / m_timeWindow) * (double)((*itStats).second.lastTtiBytesTransmitted / 0.001));
1086 NS_LOG_INFO(this << " UE total bytes " << (*itStats).second.totalBytesTransmitted);
1087 NS_LOG_INFO(this << " UE average throughput " << (*itStats).second.lastAveragedThroughput);
1088 (*itStats).second.lastTtiBytesTransmitted = 0;
1089 }
1090
1092}
1093
1094void
1102
1103void
1106{
1107 NS_LOG_FUNCTION(this);
1108
1109 for (unsigned int i = 0; i < params.m_cqiList.size(); i++)
1110 {
1111 if (params.m_cqiList.at(i).m_cqiType == CqiListElement_s::P10)
1112 {
1113 NS_LOG_LOGIC("wideband CQI " << (uint32_t)params.m_cqiList.at(i).m_wbCqi.at(0)
1114 << " reported");
1115 uint16_t rnti = params.m_cqiList.at(i).m_rnti;
1116 auto it = m_p10CqiRxed.find(rnti);
1117 if (it == m_p10CqiRxed.end())
1118 {
1119 // create the new entry
1120 m_p10CqiRxed[rnti] =
1121 params.m_cqiList.at(i).m_wbCqi.at(0); // only codeword 0 at this stage (SISO)
1122 // generate correspondent timer
1124 }
1125 else
1126 {
1127 // update the CQI value and refresh correspondent timer
1128 (*it).second = params.m_cqiList.at(i).m_wbCqi.at(0);
1129 // update correspondent timer
1130 auto itTimers = m_p10CqiTimers.find(rnti);
1131 (*itTimers).second = m_cqiTimersThreshold;
1132 }
1133 }
1134 else if (params.m_cqiList.at(i).m_cqiType == CqiListElement_s::A30)
1135 {
1136 // subband CQI reporting high layer configured
1137 uint16_t rnti = params.m_cqiList.at(i).m_rnti;
1138 auto it = m_a30CqiRxed.find(rnti);
1139 if (it == m_a30CqiRxed.end())
1140 {
1141 // create the new entry
1142 m_a30CqiRxed[rnti] = params.m_cqiList.at(i).m_sbMeasResult;
1144 }
1145 else
1146 {
1147 // update the CQI value and refresh correspondent timer
1148 (*it).second = params.m_cqiList.at(i).m_sbMeasResult;
1149 auto itTimers = m_a30CqiTimers.find(rnti);
1150 (*itTimers).second = m_cqiTimersThreshold;
1151 }
1152 }
1153 else
1154 {
1155 NS_LOG_ERROR(this << " CQI type unknown");
1156 }
1157 }
1158}
1159
1160double
1161TdBetFfMacScheduler::EstimateUlSinr(uint16_t rnti, uint16_t rb)
1162{
1163 auto itCqi = m_ueCqi.find(rnti);
1164 if (itCqi == m_ueCqi.end())
1165 {
1166 // no cqi info about this UE
1167 return NO_SINR;
1168 }
1169 else
1170 {
1171 // take the average SINR value among the available
1172 double sinrSum = 0;
1173 unsigned int sinrNum = 0;
1174 for (uint32_t i = 0; i < m_cschedCellConfig.m_ulBandwidth; i++)
1175 {
1176 double sinr = (*itCqi).second.at(i);
1177 if (sinr != NO_SINR)
1178 {
1179 sinrSum += sinr;
1180 sinrNum++;
1181 }
1182 }
1183 double estimatedSinr = (sinrNum > 0) ? (sinrSum / sinrNum) : DBL_MAX;
1184 // store the value
1185 (*itCqi).second.at(rb) = estimatedSinr;
1186 return estimatedSinr;
1187 }
1188}
1189
1190void
1193{
1194 NS_LOG_FUNCTION(this << " UL - Frame no. " << (params.m_sfnSf >> 4) << " subframe no. "
1195 << (0xF & params.m_sfnSf) << " size " << params.m_ulInfoList.size());
1196
1198
1199 // Generate RBs map
1201 std::vector<bool> rbMap;
1202 std::set<uint16_t> rntiAllocated;
1203 std::vector<uint16_t> rbgAllocationMap;
1204 // update with RACH allocation map
1205 rbgAllocationMap = m_rachAllocationMap;
1206 // rbgAllocationMap.resize (m_cschedCellConfig.m_ulBandwidth, 0);
1207 m_rachAllocationMap.clear();
1209
1210 rbMap.resize(m_cschedCellConfig.m_ulBandwidth, false);
1211 // remove RACH allocation
1212 for (uint16_t i = 0; i < m_cschedCellConfig.m_ulBandwidth; i++)
1213 {
1214 if (rbgAllocationMap.at(i) != 0)
1215 {
1216 rbMap.at(i) = true;
1217 NS_LOG_DEBUG(this << " Allocated for RACH " << i);
1218 }
1219 }
1220
1221 if (m_harqOn)
1222 {
1223 // Process UL HARQ feedback
1224 for (std::size_t i = 0; i < params.m_ulInfoList.size(); i++)
1225 {
1226 if (params.m_ulInfoList.at(i).m_receptionStatus == UlInfoListElement_s::NotOk)
1227 {
1228 // retx correspondent block: retrieve the UL-DCI
1229 uint16_t rnti = params.m_ulInfoList.at(i).m_rnti;
1230 auto itProcId = m_ulHarqCurrentProcessId.find(rnti);
1231 if (itProcId == m_ulHarqCurrentProcessId.end())
1232 {
1233 NS_LOG_ERROR("No info find in HARQ buffer for UE (might change eNB) " << rnti);
1234 }
1235 uint8_t harqId = (uint8_t)((*itProcId).second - HARQ_PERIOD) % HARQ_PROC_NUM;
1236 NS_LOG_INFO(this << " UL-HARQ retx RNTI " << rnti << " harqId " << (uint16_t)harqId
1237 << " i " << i << " size " << params.m_ulInfoList.size());
1238 auto itHarq = m_ulHarqProcessesDciBuffer.find(rnti);
1239 if (itHarq == m_ulHarqProcessesDciBuffer.end())
1240 {
1241 NS_LOG_ERROR("No info find in HARQ buffer for UE (might change eNB) " << rnti);
1242 continue;
1243 }
1244 UlDciListElement_s dci = (*itHarq).second.at(harqId);
1245 auto itStat = m_ulHarqProcessesStatus.find(rnti);
1246 if (itStat == m_ulHarqProcessesStatus.end())
1247 {
1248 NS_LOG_ERROR("No info find in HARQ buffer for UE (might change eNB) " << rnti);
1249 }
1250 if ((*itStat).second.at(harqId) >= 3)
1251 {
1252 NS_LOG_INFO("Max number of retransmissions reached (UL)-> drop process");
1253 continue;
1254 }
1255 bool free = true;
1256 for (int j = dci.m_rbStart; j < dci.m_rbStart + dci.m_rbLen; j++)
1257 {
1258 if (rbMap.at(j))
1259 {
1260 free = false;
1261 NS_LOG_INFO(this << " BUSY " << j);
1262 }
1263 }
1264 if (free)
1265 {
1266 // retx on the same RBs
1267 for (int j = dci.m_rbStart; j < dci.m_rbStart + dci.m_rbLen; j++)
1268 {
1269 rbMap.at(j) = true;
1270 rbgAllocationMap.at(j) = dci.m_rnti;
1271 NS_LOG_INFO("\tRB " << j);
1272 }
1273 NS_LOG_INFO(this << " Send retx in the same RBs " << (uint16_t)dci.m_rbStart
1274 << " to " << dci.m_rbStart + dci.m_rbLen << " RV "
1275 << (*itStat).second.at(harqId) + 1);
1276 }
1277 else
1278 {
1279 NS_LOG_INFO("Cannot allocate retx due to RACH allocations for UE " << rnti);
1280 continue;
1281 }
1282 dci.m_ndi = 0;
1283 // Update HARQ buffers with new HarqId
1284 (*itStat).second.at((*itProcId).second) = (*itStat).second.at(harqId) + 1;
1285 (*itStat).second.at(harqId) = 0;
1286 (*itHarq).second.at((*itProcId).second) = dci;
1287 ret.m_dciList.push_back(dci);
1288 rntiAllocated.insert(dci.m_rnti);
1289 }
1290 else
1291 {
1292 NS_LOG_INFO(this << " HARQ-ACK feedback from RNTI "
1293 << params.m_ulInfoList.at(i).m_rnti);
1294 }
1295 }
1296 }
1297
1298 std::map<uint16_t, uint32_t>::iterator it;
1299 int nflows = 0;
1300
1301 for (it = m_ceBsrRxed.begin(); it != m_ceBsrRxed.end(); it++)
1302 {
1303 auto itRnti = rntiAllocated.find((*it).first);
1304 // select UEs with queues not empty and not yet allocated for HARQ
1305 if (((*it).second > 0) && (itRnti == rntiAllocated.end()))
1306 {
1307 nflows++;
1308 }
1309 }
1310
1311 if (nflows == 0)
1312 {
1313 if (!ret.m_dciList.empty())
1314 {
1315 m_allocationMaps[params.m_sfnSf] = rbgAllocationMap;
1317 }
1318
1319 return; // no flows to be scheduled
1320 }
1321
1322 // Divide the remaining resources equally among the active users starting from the subsequent
1323 // one served last scheduling trigger
1324 uint16_t rbPerFlow = (m_cschedCellConfig.m_ulBandwidth) / (nflows + rntiAllocated.size());
1325 if (rbPerFlow < 3)
1326 {
1327 rbPerFlow = 3; // at least 3 rbg per flow (till available resource) to ensure TxOpportunity
1328 // >= 7 bytes
1329 }
1330 int rbAllocated = 0;
1331
1332 if (m_nextRntiUl != 0)
1333 {
1334 for (it = m_ceBsrRxed.begin(); it != m_ceBsrRxed.end(); it++)
1335 {
1336 if ((*it).first == m_nextRntiUl)
1337 {
1338 break;
1339 }
1340 }
1341 if (it == m_ceBsrRxed.end())
1342 {
1343 NS_LOG_ERROR(this << " no user found");
1344 }
1345 }
1346 else
1347 {
1348 it = m_ceBsrRxed.begin();
1349 m_nextRntiUl = (*it).first;
1350 }
1351 do
1352 {
1353 auto itRnti = rntiAllocated.find((*it).first);
1354 if ((itRnti != rntiAllocated.end()) || ((*it).second == 0))
1355 {
1356 // UE already allocated for UL-HARQ -> skip it
1357 NS_LOG_DEBUG(this << " UE already allocated in HARQ -> discarded, RNTI "
1358 << (*it).first);
1359 it++;
1360 if (it == m_ceBsrRxed.end())
1361 {
1362 // restart from the first
1363 it = m_ceBsrRxed.begin();
1364 }
1365 continue;
1366 }
1367 if (rbAllocated + rbPerFlow - 1 > m_cschedCellConfig.m_ulBandwidth)
1368 {
1369 // limit to physical resources last resource assignment
1370 rbPerFlow = m_cschedCellConfig.m_ulBandwidth - rbAllocated;
1371 // at least 3 rbg per flow to ensure TxOpportunity >= 7 bytes
1372 if (rbPerFlow < 3)
1373 {
1374 // terminate allocation
1375 rbPerFlow = 0;
1376 }
1377 }
1378
1379 UlDciListElement_s uldci;
1380 uldci.m_rnti = (*it).first;
1381 uldci.m_rbLen = rbPerFlow;
1382 bool allocated = false;
1383 NS_LOG_INFO(this << " RB Allocated " << rbAllocated << " rbPerFlow " << rbPerFlow
1384 << " flows " << nflows);
1385 while ((!allocated) && ((rbAllocated + rbPerFlow - m_cschedCellConfig.m_ulBandwidth) < 1) &&
1386 (rbPerFlow != 0))
1387 {
1388 // check availability
1389 bool free = true;
1390 for (int j = rbAllocated; j < rbAllocated + rbPerFlow; j++)
1391 {
1392 if (rbMap.at(j))
1393 {
1394 free = false;
1395 break;
1396 }
1397 }
1398 if (free)
1399 {
1400 uldci.m_rbStart = rbAllocated;
1401
1402 for (int j = rbAllocated; j < rbAllocated + rbPerFlow; j++)
1403 {
1404 rbMap.at(j) = true;
1405 // store info on allocation for managing ul-cqi interpretation
1406 rbgAllocationMap.at(j) = (*it).first;
1407 }
1408 rbAllocated += rbPerFlow;
1409 allocated = true;
1410 break;
1411 }
1412 rbAllocated++;
1413 if (rbAllocated + rbPerFlow - 1 > m_cschedCellConfig.m_ulBandwidth)
1414 {
1415 // limit to physical resources last resource assignment
1416 rbPerFlow = m_cschedCellConfig.m_ulBandwidth - rbAllocated;
1417 // at least 3 rbg per flow to ensure TxOpportunity >= 7 bytes
1418 if (rbPerFlow < 3)
1419 {
1420 // terminate allocation
1421 rbPerFlow = 0;
1422 }
1423 }
1424 }
1425 if (!allocated)
1426 {
1427 // unable to allocate new resource: finish scheduling
1428 m_nextRntiUl = (*it).first;
1429 if (!ret.m_dciList.empty())
1430 {
1432 }
1433 m_allocationMaps[params.m_sfnSf] = rbgAllocationMap;
1434 return;
1435 }
1436
1437 auto itCqi = m_ueCqi.find((*it).first);
1438 int cqi = 0;
1439 if (itCqi == m_ueCqi.end())
1440 {
1441 // no cqi info about this UE
1442 uldci.m_mcs = 0; // MCS 0 -> UL-AMC TBD
1443 }
1444 else
1445 {
1446 // take the lowest CQI value (worst RB)
1447 NS_ABORT_MSG_IF((*itCqi).second.empty(),
1448 "CQI of RNTI = " << (*it).first << " has expired");
1449 double minSinr = (*itCqi).second.at(uldci.m_rbStart);
1450 if (minSinr == NO_SINR)
1451 {
1452 minSinr = EstimateUlSinr((*it).first, uldci.m_rbStart);
1453 }
1454 for (uint16_t i = uldci.m_rbStart; i < uldci.m_rbStart + uldci.m_rbLen; i++)
1455 {
1456 double sinr = (*itCqi).second.at(i);
1457 if (sinr == NO_SINR)
1458 {
1459 sinr = EstimateUlSinr((*it).first, i);
1460 }
1461 if (sinr < minSinr)
1462 {
1463 minSinr = sinr;
1464 }
1465 }
1466
1467 // translate SINR -> cqi: WILD ACK: same as DL
1468 double s = log2(1 + (std::pow(10, minSinr / 10) / ((-std::log(5.0 * 0.00005)) / 1.5)));
1469 cqi = m_amc->GetCqiFromSpectralEfficiency(s);
1470 if (cqi == 0)
1471 {
1472 it++;
1473 if (it == m_ceBsrRxed.end())
1474 {
1475 // restart from the first
1476 it = m_ceBsrRxed.begin();
1477 }
1478 NS_LOG_DEBUG(this << " UE discarded for CQI = 0, RNTI " << uldci.m_rnti);
1479 // remove UE from allocation map
1480 for (uint16_t i = uldci.m_rbStart; i < uldci.m_rbStart + uldci.m_rbLen; i++)
1481 {
1482 rbgAllocationMap.at(i) = 0;
1483 }
1484 continue; // CQI == 0 means "out of range" (see table 7.2.3-1 of 36.213)
1485 }
1486 uldci.m_mcs = m_amc->GetMcsFromCqi(cqi);
1487 }
1488
1489 uldci.m_tbSize = (m_amc->GetUlTbSizeFromMcs(uldci.m_mcs, rbPerFlow) / 8);
1491 uldci.m_ndi = 1;
1492 uldci.m_cceIndex = 0;
1493 uldci.m_aggrLevel = 1;
1494 uldci.m_ueTxAntennaSelection = 3; // antenna selection OFF
1495 uldci.m_hopping = false;
1496 uldci.m_n2Dmrs = 0;
1497 uldci.m_tpc = 0; // no power control
1498 uldci.m_cqiRequest = false; // only period CQI at this stage
1499 uldci.m_ulIndex = 0; // TDD parameter
1500 uldci.m_dai = 1; // TDD parameter
1501 uldci.m_freqHopping = 0;
1502 uldci.m_pdcchPowerOffset = 0; // not used
1503 ret.m_dciList.push_back(uldci);
1504 // store DCI for HARQ_PERIOD
1505 uint8_t harqId = 0;
1506 if (m_harqOn)
1507 {
1508 auto itProcId = m_ulHarqCurrentProcessId.find(uldci.m_rnti);
1509 if (itProcId == m_ulHarqCurrentProcessId.end())
1510 {
1511 NS_FATAL_ERROR("No info find in HARQ buffer for UE " << uldci.m_rnti);
1512 }
1513 harqId = (*itProcId).second;
1514 auto itDci = m_ulHarqProcessesDciBuffer.find(uldci.m_rnti);
1515 if (itDci == m_ulHarqProcessesDciBuffer.end())
1516 {
1517 NS_FATAL_ERROR("Unable to find RNTI entry in UL DCI HARQ buffer for RNTI "
1518 << uldci.m_rnti);
1519 }
1520 (*itDci).second.at(harqId) = uldci;
1521 // Update HARQ process status (RV 0)
1522 auto itStat = m_ulHarqProcessesStatus.find(uldci.m_rnti);
1523 if (itStat == m_ulHarqProcessesStatus.end())
1524 {
1525 NS_LOG_ERROR("No info find in HARQ buffer for UE (might change eNB) "
1526 << uldci.m_rnti);
1527 }
1528 (*itStat).second.at(harqId) = 0;
1529 }
1530
1531 NS_LOG_INFO(this << " UE Allocation RNTI " << (*it).first << " startPRB "
1532 << (uint32_t)uldci.m_rbStart << " nPRB " << (uint32_t)uldci.m_rbLen
1533 << " CQI " << cqi << " MCS " << (uint32_t)uldci.m_mcs << " TBsize "
1534 << uldci.m_tbSize << " RbAlloc " << rbAllocated << " harqId "
1535 << (uint16_t)harqId);
1536
1537 // update TTI UE stats
1538 auto itStats = m_flowStatsUl.find((*it).first);
1539 if (itStats != m_flowStatsUl.end())
1540 {
1541 (*itStats).second.lastTtiBytesTransmitted = uldci.m_tbSize;
1542 }
1543 else
1544 {
1545 NS_LOG_DEBUG(this << " No Stats for this allocated UE");
1546 }
1547
1548 it++;
1549 if (it == m_ceBsrRxed.end())
1550 {
1551 // restart from the first
1552 it = m_ceBsrRxed.begin();
1553 }
1554 if ((rbAllocated == m_cschedCellConfig.m_ulBandwidth) || (rbPerFlow == 0))
1555 {
1556 // Stop allocation: no more PRBs
1557 m_nextRntiUl = (*it).first;
1558 break;
1559 }
1560 } while (((*it).first != m_nextRntiUl) && (rbPerFlow != 0));
1561
1562 // Update global UE stats
1563 // update UEs stats
1564 for (auto itStats = m_flowStatsUl.begin(); itStats != m_flowStatsUl.end(); itStats++)
1565 {
1566 (*itStats).second.totalBytesTransmitted += (*itStats).second.lastTtiBytesTransmitted;
1567 // update average throughput (see eq. 12.3 of Sec 12.3.1.2 of LTE – The UMTS Long Term
1568 // Evolution, Ed Wiley)
1569 (*itStats).second.lastAveragedThroughput =
1570 ((1.0 - (1.0 / m_timeWindow)) * (*itStats).second.lastAveragedThroughput) +
1571 ((1.0 / m_timeWindow) * (double)((*itStats).second.lastTtiBytesTransmitted / 0.001));
1572 NS_LOG_INFO(this << " UE total bytes " << (*itStats).second.totalBytesTransmitted);
1573 NS_LOG_INFO(this << " UE average throughput " << (*itStats).second.lastAveragedThroughput);
1574 (*itStats).second.lastTtiBytesTransmitted = 0;
1575 }
1576 m_allocationMaps[params.m_sfnSf] = rbgAllocationMap;
1578}
1579
1580void
1586
1587void
1593
1594void
1597{
1598 NS_LOG_FUNCTION(this);
1599
1600 for (unsigned int i = 0; i < params.m_macCeList.size(); i++)
1601 {
1602 if (params.m_macCeList.at(i).m_macCeType == MacCeListElement_s::BSR)
1603 {
1604 // buffer status report
1605 // note that this scheduler does not differentiate the
1606 // allocation according to which LCGs have more/less bytes
1607 // to send.
1608 // Hence the BSR of different LCGs are just summed up to get
1609 // a total queue size that is used for allocation purposes.
1610
1611 uint32_t buffer = 0;
1612 for (uint8_t lcg = 0; lcg < 4; ++lcg)
1613 {
1614 uint8_t bsrId = params.m_macCeList.at(i).m_macCeValue.m_bufferStatus.at(lcg);
1615 buffer += BufferSizeLevelBsr::BsrId2BufferSize(bsrId);
1616 }
1617
1618 uint16_t rnti = params.m_macCeList.at(i).m_rnti;
1619 NS_LOG_LOGIC(this << "RNTI=" << rnti << " buffer=" << buffer);
1620 auto it = m_ceBsrRxed.find(rnti);
1621 if (it == m_ceBsrRxed.end())
1622 {
1623 // create the new entry
1624 m_ceBsrRxed[rnti] = buffer;
1625 }
1626 else
1627 {
1628 // update the buffer size value
1629 (*it).second = buffer;
1630 }
1631 }
1632 }
1633}
1634
1635void
1638{
1639 NS_LOG_FUNCTION(this);
1640 // retrieve the allocation for this subframe
1641 switch (m_ulCqiFilter)
1642 {
1644 // filter all the CQIs that are not SRS based
1645 if (params.m_ulCqi.m_type != UlCqi_s::SRS)
1646 {
1647 return;
1648 }
1649 }
1650 break;
1652 // filter all the CQIs that are not SRS based
1653 if (params.m_ulCqi.m_type != UlCqi_s::PUSCH)
1654 {
1655 return;
1656 }
1657 }
1658 break;
1659 default:
1660 NS_FATAL_ERROR("Unknown UL CQI type");
1661 }
1662
1663 switch (params.m_ulCqi.m_type)
1664 {
1665 case UlCqi_s::PUSCH: {
1666 NS_LOG_DEBUG(this << " Collect PUSCH CQIs of Frame no. " << (params.m_sfnSf >> 4)
1667 << " subframe no. " << (0xF & params.m_sfnSf));
1668 auto itMap = m_allocationMaps.find(params.m_sfnSf);
1669 if (itMap == m_allocationMaps.end())
1670 {
1671 return;
1672 }
1673 for (uint32_t i = 0; i < (*itMap).second.size(); i++)
1674 {
1675 // convert from fixed point notation Sxxxxxxxxxxx.xxx to double
1676 double sinr = LteFfConverter::fpS11dot3toDouble(params.m_ulCqi.m_sinr.at(i));
1677 auto itCqi = m_ueCqi.find((*itMap).second.at(i));
1678 if (itCqi == m_ueCqi.end())
1679 {
1680 // create a new entry
1681 std::vector<double> newCqi;
1682 for (uint32_t j = 0; j < m_cschedCellConfig.m_ulBandwidth; j++)
1683 {
1684 if (i == j)
1685 {
1686 newCqi.push_back(sinr);
1687 }
1688 else
1689 {
1690 // initialize with NO_SINR value.
1691 newCqi.push_back(NO_SINR);
1692 }
1693 }
1694 m_ueCqi[(*itMap).second.at(i)] = newCqi;
1695 // generate correspondent timer
1696 m_ueCqiTimers[(*itMap).second.at(i)] = m_cqiTimersThreshold;
1697 }
1698 else
1699 {
1700 // update the value
1701 (*itCqi).second.at(i) = sinr;
1702 NS_LOG_DEBUG(this << " RNTI " << (*itMap).second.at(i) << " RB " << i << " SINR "
1703 << sinr);
1704 // update correspondent timer
1705 auto itTimers = m_ueCqiTimers.find((*itMap).second.at(i));
1706 (*itTimers).second = m_cqiTimersThreshold;
1707 }
1708 }
1709 // remove obsolete info on allocation
1710 m_allocationMaps.erase(itMap);
1711 }
1712 break;
1713 case UlCqi_s::SRS: {
1714 // get the RNTI from vendor specific parameters
1715 uint16_t rnti = 0;
1716 NS_ASSERT(!params.m_vendorSpecificList.empty());
1717 for (std::size_t i = 0; i < params.m_vendorSpecificList.size(); i++)
1718 {
1719 if (params.m_vendorSpecificList.at(i).m_type == SRS_CQI_RNTI_VSP)
1720 {
1721 Ptr<SrsCqiRntiVsp> vsp =
1722 DynamicCast<SrsCqiRntiVsp>(params.m_vendorSpecificList.at(i).m_value);
1723 rnti = vsp->GetRnti();
1724 }
1725 }
1726 auto itCqi = m_ueCqi.find(rnti);
1727 if (itCqi == m_ueCqi.end())
1728 {
1729 // create a new entry
1730 std::vector<double> newCqi;
1731 for (uint32_t j = 0; j < m_cschedCellConfig.m_ulBandwidth; j++)
1732 {
1733 double sinr = LteFfConverter::fpS11dot3toDouble(params.m_ulCqi.m_sinr.at(j));
1734 newCqi.push_back(sinr);
1735 NS_LOG_INFO(this << " RNTI " << rnti << " new SRS-CQI for RB " << j << " value "
1736 << sinr);
1737 }
1738 m_ueCqi[rnti] = newCqi;
1739 // generate correspondent timer
1741 }
1742 else
1743 {
1744 // update the values
1745 for (uint32_t j = 0; j < m_cschedCellConfig.m_ulBandwidth; j++)
1746 {
1747 double sinr = LteFfConverter::fpS11dot3toDouble(params.m_ulCqi.m_sinr.at(j));
1748 (*itCqi).second.at(j) = sinr;
1749 NS_LOG_INFO(this << " RNTI " << rnti << " update SRS-CQI for RB " << j << " value "
1750 << sinr);
1751 }
1752 // update correspondent timer
1753 auto itTimers = m_ueCqiTimers.find(rnti);
1754 (*itTimers).second = m_cqiTimersThreshold;
1755 }
1756 }
1757 break;
1758 case UlCqi_s::PUCCH_1:
1759 case UlCqi_s::PUCCH_2:
1760 case UlCqi_s::PRACH: {
1761 NS_FATAL_ERROR("TdBetFfMacScheduler supports only PUSCH and SRS UL-CQIs");
1762 }
1763 break;
1764 default:
1765 NS_FATAL_ERROR("Unknown type of UL-CQI");
1766 }
1767}
1768
1769void
1771{
1772 // refresh DL CQI P01 Map
1773 auto itP10 = m_p10CqiTimers.begin();
1774 while (itP10 != m_p10CqiTimers.end())
1775 {
1776 NS_LOG_INFO(this << " P10-CQI for user " << (*itP10).first << " is "
1777 << (uint32_t)(*itP10).second << " thr " << (uint32_t)m_cqiTimersThreshold);
1778 if ((*itP10).second == 0)
1779 {
1780 // delete correspondent entries
1781 auto itMap = m_p10CqiRxed.find((*itP10).first);
1782 NS_ASSERT_MSG(itMap != m_p10CqiRxed.end(),
1783 " Does not find CQI report for user " << (*itP10).first);
1784 NS_LOG_INFO(this << " P10-CQI expired for user " << (*itP10).first);
1785 m_p10CqiRxed.erase(itMap);
1786 auto temp = itP10;
1787 itP10++;
1788 m_p10CqiTimers.erase(temp);
1789 }
1790 else
1791 {
1792 (*itP10).second--;
1793 itP10++;
1794 }
1795 }
1796
1797 // refresh DL CQI A30 Map
1798 auto itA30 = m_a30CqiTimers.begin();
1799 while (itA30 != m_a30CqiTimers.end())
1800 {
1801 NS_LOG_INFO(this << " A30-CQI for user " << (*itA30).first << " is "
1802 << (uint32_t)(*itA30).second << " thr " << (uint32_t)m_cqiTimersThreshold);
1803 if ((*itA30).second == 0)
1804 {
1805 // delete correspondent entries
1806 auto itMap = m_a30CqiRxed.find((*itA30).first);
1807 NS_ASSERT_MSG(itMap != m_a30CqiRxed.end(),
1808 " Does not find CQI report for user " << (*itA30).first);
1809 NS_LOG_INFO(this << " A30-CQI expired for user " << (*itA30).first);
1810 m_a30CqiRxed.erase(itMap);
1811 auto temp = itA30;
1812 itA30++;
1813 m_a30CqiTimers.erase(temp);
1814 }
1815 else
1816 {
1817 (*itA30).second--;
1818 itA30++;
1819 }
1820 }
1821}
1822
1823void
1825{
1826 // refresh UL CQI Map
1827 auto itUl = m_ueCqiTimers.begin();
1828 while (itUl != m_ueCqiTimers.end())
1829 {
1830 NS_LOG_INFO(this << " UL-CQI for user " << (*itUl).first << " is "
1831 << (uint32_t)(*itUl).second << " thr " << (uint32_t)m_cqiTimersThreshold);
1832 if ((*itUl).second == 0)
1833 {
1834 // delete correspondent entries
1835 auto itMap = m_ueCqi.find((*itUl).first);
1836 NS_ASSERT_MSG(itMap != m_ueCqi.end(),
1837 " Does not find CQI report for user " << (*itUl).first);
1838 NS_LOG_INFO(this << " UL-CQI exired for user " << (*itUl).first);
1839 (*itMap).second.clear();
1840 m_ueCqi.erase(itMap);
1841 auto temp = itUl;
1842 itUl++;
1843 m_ueCqiTimers.erase(temp);
1844 }
1845 else
1846 {
1847 (*itUl).second--;
1848 itUl++;
1849 }
1850 }
1851}
1852
1853void
1854TdBetFfMacScheduler::UpdateDlRlcBufferInfo(uint16_t rnti, uint8_t lcid, uint16_t size)
1855{
1856 LteFlowId_t flow(rnti, lcid);
1857 auto it = m_rlcBufferReq.find(flow);
1858 if (it != m_rlcBufferReq.end())
1859 {
1860 NS_LOG_INFO(this << " UE " << rnti << " LC " << (uint16_t)lcid << " txqueue "
1861 << (*it).second.m_rlcTransmissionQueueSize << " retxqueue "
1862 << (*it).second.m_rlcRetransmissionQueueSize << " status "
1863 << (*it).second.m_rlcStatusPduSize << " decrease " << size);
1864 // Update queues: RLC tx order Status, ReTx, Tx
1865 // Update status queue
1866 if (((*it).second.m_rlcStatusPduSize > 0) && (size >= (*it).second.m_rlcStatusPduSize))
1867 {
1868 (*it).second.m_rlcStatusPduSize = 0;
1869 }
1870 else if (((*it).second.m_rlcRetransmissionQueueSize > 0) &&
1871 (size >= (*it).second.m_rlcRetransmissionQueueSize))
1872 {
1873 (*it).second.m_rlcRetransmissionQueueSize = 0;
1874 }
1875 else if ((*it).second.m_rlcTransmissionQueueSize > 0)
1876 {
1877 uint32_t rlcOverhead;
1878 if (lcid == 1)
1879 {
1880 // for SRB1 (using RLC AM) it's better to
1881 // overestimate RLC overhead rather than
1882 // underestimate it and risk unneeded
1883 // segmentation which increases delay
1884 rlcOverhead = 4;
1885 }
1886 else
1887 {
1888 // minimum RLC overhead due to header
1889 rlcOverhead = 2;
1890 }
1891 // update transmission queue
1892 if ((*it).second.m_rlcTransmissionQueueSize <= size - rlcOverhead)
1893 {
1894 (*it).second.m_rlcTransmissionQueueSize = 0;
1895 }
1896 else
1897 {
1898 (*it).second.m_rlcTransmissionQueueSize -= size - rlcOverhead;
1899 }
1900 }
1901 }
1902 else
1903 {
1904 NS_LOG_ERROR(this << " Does not find DL RLC Buffer Report of UE " << rnti);
1905 }
1906}
1907
1908void
1910{
1911 size = size - 2; // remove the minimum RLC overhead
1912 auto it = m_ceBsrRxed.find(rnti);
1913 if (it != m_ceBsrRxed.end())
1914 {
1915 NS_LOG_INFO(this << " UE " << rnti << " size " << size << " BSR " << (*it).second);
1916 if ((*it).second >= size)
1917 {
1918 (*it).second -= size;
1919 }
1920 else
1921 {
1922 (*it).second = 0;
1923 }
1924 }
1925 else
1926 {
1927 NS_LOG_ERROR(this << " Does not find BSR report info of UE " << rnti);
1928 }
1929}
1930
1931void
1933{
1934 NS_LOG_FUNCTION(this << " RNTI " << rnti << " txMode " << (uint16_t)txMode);
1936 params.m_rnti = rnti;
1937 params.m_transmissionMode = txMode;
1939}
1940
1941} // namespace ns3
AttributeValue implementation for Boolean.
Definition boolean.h:26
static uint32_t BsrId2BufferSize(uint8_t val)
Convert BSR ID to buffer size.
Provides the CSCHED SAP.
FfMacCschedSapUser class.
virtual void CschedUeConfigCnf(const CschedUeConfigCnfParameters &params)=0
CSCHED_UE_CONFIG_CNF.
virtual void CschedUeConfigUpdateInd(const CschedUeConfigUpdateIndParameters &params)=0
CSCHED_UE_UPDATE_IND.
Provides the SCHED SAP.
FfMacSchedSapUser class.
virtual void SchedUlConfigInd(const SchedUlConfigIndParameters &params)=0
SCHED_UL_CONFIG_IND.
virtual void SchedDlConfigInd(const SchedDlConfigIndParameters &params)=0
SCHED_DL_CONFIG_IND.
This abstract base class identifies the interface by means of which the helper object can plug on the...
UlCqiFilter_t m_ulCqiFilter
UL CQI filter.
static double fpS11dot3toDouble(uint16_t val)
Convert from fixed point S11.3 notation to double.
Service Access Point (SAP) offered by the Frequency Reuse algorithm instance to the MAC Scheduler ins...
Definition lte-ffr-sap.h:29
Service Access Point (SAP) offered by the eNodeB RRC instance to the Frequency Reuse algorithm instan...
Smart pointer class similar to boost::intrusive_ptr.
static Time Now()
Return the current simulation virtual time.
Definition simulator.cc:197
Implements the SCHED SAP and CSCHED SAP for a Time Domain Blind Equal Throughput scheduler.
FfMacCschedSapProvider * GetFfMacCschedSapProvider() override
double EstimateUlSinr(uint16_t rnti, uint16_t rb)
Estimate UL SINR function.
FfMacCschedSapUser * m_cschedSapUser
CSched SAP user.
void DoSchedUlNoiseInterferenceReq(const FfMacSchedSapProvider::SchedUlNoiseInterferenceReqParameters &params)
Sched UL noise interference request.
std::vector< DlInfoListElement_s > m_dlInfoListBuffered
HARQ retx buffered.
void DoSchedDlPagingBufferReq(const FfMacSchedSapProvider::SchedDlPagingBufferReqParameters &params)
Sched DL paging buffer request.
void DoCschedUeReleaseReq(const FfMacCschedSapProvider::CschedUeReleaseReqParameters &params)
CSched UE release request.
std::map< uint16_t, tdbetsFlowPerf_t > m_flowStatsDl
Map of UE statistics (per RNTI basis) in downlink.
int GetRbgSize(int dlbandwidth)
Get RBG size function.
void DoCschedUeConfigReq(const FfMacCschedSapProvider::CschedUeConfigReqParameters &params)
CSched UE config request.
void DoCschedLcConfigReq(const FfMacCschedSapProvider::CschedLcConfigReqParameters &params)
CSched LC config request.
void RefreshDlCqiMaps()
Refresh DL CQI maps function.
std::map< uint16_t, uint8_t > m_dlHarqCurrentProcessId
DL HARQ process ID.
std::map< uint16_t, uint32_t > m_ueCqiTimers
Map of UEs' timers on UL-CQI per RBG.
LteFfrSapProvider * m_ffrSapProvider
FFR SAP provider.
std::map< uint16_t, DlHarqProcessesStatus_t > m_dlHarqProcessesStatus
DL HARQ process status.
std::map< uint16_t, tdbetsFlowPerf_t > m_flowStatsUl
Map of UE statistics (per RNTI basis)
std::vector< RachListElement_s > m_rachList
RACH list.
std::map< LteFlowId_t, FfMacSchedSapProvider::SchedDlRlcBufferReqParameters > m_rlcBufferReq
Vectors of UE's LC info.
void DoSchedUlMacCtrlInfoReq(const FfMacSchedSapProvider::SchedUlMacCtrlInfoReqParameters &params)
Sched UL MAC control info request.
FfMacCschedSapProvider::CschedCellConfigReqParameters m_cschedCellConfig
CSched cell config.
void DoSchedUlSrInfoReq(const FfMacSchedSapProvider::SchedUlSrInfoReqParameters &params)
Sched UL SR info request.
bool HarqProcessAvailability(uint16_t rnti)
Return the availability of free process for the RNTI specified.
std::vector< uint16_t > m_rachAllocationMap
RACH allocation map.
void DoDispose() override
Destructor implementation.
std::map< uint16_t, std::vector< double > > m_ueCqi
Map of UEs' UL-CQI per RBG.
LteFfrSapUser * GetLteFfrSapUser() override
FfMacSchedSapUser * m_schedSapUser
Sched SAP user.
LteFfrSapUser * m_ffrSapUser
FFR SAP user.
static TypeId GetTypeId()
Get the type ID.
void DoSchedUlTriggerReq(const FfMacSchedSapProvider::SchedUlTriggerReqParameters &params)
Sched UL trigger request.
void SetFfMacSchedSapUser(FfMacSchedSapUser *s) override
set the user part of the FfMacSchedSap that this Scheduler will interact with.
void DoSchedDlMacBufferReq(const FfMacSchedSapProvider::SchedDlMacBufferReqParameters &params)
Sched DL MAC buffer request.
FfMacSchedSapProvider * m_schedSapProvider
Sched SAP provider.
bool m_harqOn
m_harqOn when false inhibit the HARQ mechanisms (by default active)
void DoSchedUlCqiInfoReq(const FfMacSchedSapProvider::SchedUlCqiInfoReqParameters &params)
Sched UL CQI info request.
std::map< uint16_t, uint8_t > m_p10CqiRxed
Map of UE's DL CQI P01 received.
friend class MemberSchedSapProvider< TdBetFfMacScheduler >
allow MemberSchedSapProvider<TdBetFfMacScheduler> class friend access
std::map< uint16_t, UlHarqProcessesStatus_t > m_ulHarqProcessesStatus
UL HARQ process status.
std::map< uint16_t, UlHarqProcessesDciBuffer_t > m_ulHarqProcessesDciBuffer
UL HARQ process DCI buffer.
void TransmissionModeConfigurationUpdate(uint16_t rnti, uint8_t txMode)
Transmission mode configuration update function.
void SetFfMacCschedSapUser(FfMacCschedSapUser *s) override
set the user part of the FfMacCschedSap that this Scheduler will interact with.
friend class MemberCschedSapProvider< TdBetFfMacScheduler >
allow MemberCschedSapProvider<TdBetFfMacScheduler> class friend access
void DoSchedDlRlcBufferReq(const FfMacSchedSapProvider::SchedDlRlcBufferReqParameters &params)
Sched DL RLC buffer request.
FfMacSchedSapProvider * GetFfMacSchedSapProvider() override
void DoSchedDlRachInfoReq(const FfMacSchedSapProvider::SchedDlRachInfoReqParameters &params)
Sched DL RACH info request.
std::map< uint16_t, std::vector< uint16_t > > m_allocationMaps
Map of previous allocated UE per RBG (used to retrieve info from UL-CQI)
void RefreshHarqProcesses()
Refresh HARQ processes according to the timers.
void SetLteFfrSapProvider(LteFfrSapProvider *s) override
Set the Provider part of the LteFfrSap that this Scheduler will interact with.
void RefreshUlCqiMaps()
Refresh UL CQI maps function.
std::map< uint16_t, SbMeasResult_s > m_a30CqiRxed
Map of UE's DL CQI A30 received.
std::map< uint16_t, uint32_t > m_ceBsrRxed
Map of UE's buffer status reports received.
FfMacCschedSapProvider * m_cschedSapProvider
CSched SAP provider.
std::map< uint16_t, uint32_t > m_p10CqiTimers
Map of UE's timers on DL CQI P01 received.
void DoSchedDlTriggerReq(const FfMacSchedSapProvider::SchedDlTriggerReqParameters &params)
Sched DL trigger request.
void DoCschedLcReleaseReq(const FfMacCschedSapProvider::CschedLcReleaseReqParameters &params)
CSched LC release request.
void UpdateUlRlcBufferInfo(uint16_t rnti, uint16_t size)
Update UL RLC buffer info function.
std::map< uint16_t, uint32_t > m_a30CqiTimers
Map of UE's timers on DL CQI A30 received.
~TdBetFfMacScheduler() override
Destructor.
uint8_t UpdateHarqProcessId(uint16_t rnti)
Update and return a new process Id for the RNTI specified.
std::map< uint16_t, DlHarqProcessesDciBuffer_t > m_dlHarqProcessesDciBuffer
DL HARQ process DCI buffer.
unsigned int LcActivePerFlow(uint16_t rnti)
LC active flow function.
uint8_t m_ulGrantMcs
MCS for UL grant (default 0)
std::map< uint16_t, DlHarqRlcPduListBuffer_t > m_dlHarqProcessesRlcPduListBuffer
DL HARQ process RLC PDU list buffer.
void DoSchedDlCqiInfoReq(const FfMacSchedSapProvider::SchedDlCqiInfoReqParameters &params)
Sched DL CQI info request.
void UpdateDlRlcBufferInfo(uint16_t rnti, uint8_t lcid, uint16_t size)
Update DL RLC buffer info function.
void DoCschedCellConfigReq(const FfMacCschedSapProvider::CschedCellConfigReqParameters &params)
CSched cell config request.
std::map< uint16_t, uint8_t > m_ulHarqCurrentProcessId
UL HARQ current process ID.
std::map< uint16_t, DlHarqProcessesTimer_t > m_dlHarqProcessesTimer
DL HARQ process timer.
std::map< uint16_t, uint8_t > m_uesTxMode
txMode of the UEs
uint16_t m_nextRntiUl
RNTI of the next user to be served next scheduling in UL.
static uint8_t TxMode2LayerNum(uint8_t txMode)
Transmit mode 2 layer number.
a unique identifier for an interface.
Definition type-id.h:48
TypeId SetParent(TypeId tid)
Set the parent TypeId.
Definition type-id.cc:1001
Hold an unsigned integer type.
Definition uinteger.h:34
#define NS_ASSERT(condition)
At runtime, in debugging builds, if this condition is not true, the program prints the source file,...
Definition assert.h:55
#define NS_ASSERT_MSG(condition, message)
At runtime, in debugging builds, if this condition is not true, the program prints the message to out...
Definition assert.h:75
Ptr< const AttributeChecker > MakeBooleanChecker()
Definition boolean.cc:113
Ptr< const AttributeAccessor > MakeBooleanAccessor(T1 a1)
Create an AttributeAccessor for a class data member, or a lone class get functor or set method.
Definition boolean.h:70
Ptr< const AttributeChecker > MakeUintegerChecker()
Definition uinteger.h:85
Ptr< const AttributeAccessor > MakeUintegerAccessor(T1 a1)
Create an AttributeAccessor for a class data member, or a lone class get functor or set method.
Definition uinteger.h:35
#define NS_FATAL_ERROR(msg)
Report a fatal error with a message and terminate.
#define NS_ABORT_MSG_IF(cond, msg)
Abnormal program termination if a condition is true, with a message.
Definition abort.h:97
#define NS_LOG_ERROR(msg)
Use NS_LOG to output a message of level LOG_ERROR.
Definition log.h:243
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition log.h:191
#define NS_LOG_DEBUG(msg)
Use NS_LOG to output a message of level LOG_DEBUG.
Definition log.h:257
#define NS_LOG_LOGIC(msg)
Use NS_LOG to output a message of level LOG_LOGIC.
Definition log.h:271
#define NS_LOG_FUNCTION(parameters)
If log level LOG_FUNCTION is enabled, this macro will output all input parameters separated by ",...
#define NS_LOG_INFO(msg)
Use NS_LOG to output a message of level LOG_INFO.
Definition log.h:264
Ptr< T > CreateObject(Args &&... args)
Create an object by type, with varying number of constructor parameters.
Definition object.h:619
#define NS_OBJECT_ENSURE_REGISTERED(type)
Register an Object subclass with the TypeId system.
Definition object-base.h:35
#define HARQ_PERIOD
Definition lte-common.h:19
#define SRS_CQI_RNTI_VSP
Every class exported by the ns3 library is enclosed in the ns3 namespace.
std::vector< uint8_t > DlHarqProcessesTimer_t
DL HARQ process timer vector.
constexpr double NO_SINR
Value for SINR outside the range defined by FF-API, used to indicate that there is no CQI for this el...
std::vector< uint8_t > UlHarqProcessesStatus_t
UL HARQ process status vector.
std::vector< uint8_t > DlHarqProcessesStatus_t
DL HARQ process status vector.
Ptr< T1 > DynamicCast(const Ptr< T2 > &p)
Cast a Ptr.
Definition ptr.h:580
static const int TdBetType0AllocationRbg[4]
TDBET type 0 allocation RBG.
std::vector< DlDciListElement_s > DlHarqProcessesDciBuffer_t
DL HARQ process DCI buffer vector.
@ SUCCESS
constexpr uint32_t HARQ_DL_TIMEOUT
HARQ DL timeout.
constexpr uint32_t HARQ_PROC_NUM
Number of HARQ processes.
std::vector< RlcPduList_t > DlHarqRlcPduListBuffer_t
Vector of the 8 HARQ processes per UE.
std::vector< UlDciListElement_s > UlHarqProcessesDciBuffer_t
UL HARQ process DCI buffer vector.
See section 4.3.8 buildDataListElement.
std::vector< std::vector< struct RlcPduListElement_s > > m_rlcPduList
RLC PDU list.
struct DlDciListElement_s m_dci
DCI.
See section 4.3.10 buildRARListElement.
See section 4.3.1 dlDciListElement.
std::vector< uint8_t > m_ndi
New data indicator.
uint8_t m_harqProcess
HARQ process.
uint32_t m_rbBitmap
RB bitmap.
std::vector< uint8_t > m_mcs
MCS.
uint8_t m_resAlloc
The type of resource allocation.
std::vector< uint16_t > m_tbsSize
The TBs size.
std::vector< uint8_t > m_rv
Redundancy version.
uint8_t m_tpc
Tx power control command.
Parameters of the CSCHED_LC_CONFIG_REQ primitive.
Parameters of the CSCHED_LC_RELEASE_REQ primitive.
Parameters of the CSCHED_UE_CONFIG_REQ primitive.
Parameters of the CSCHED_UE_RELEASE_REQ primitive.
Parameters of the CSCHED_UE_CONFIG_CNF primitive.
Parameters of the CSCHED_UE_CONFIG_UPDATE_IND primitive.
Parameters of the SCHED_DL_CQI_INFO_REQ primitive.
Parameters of the SCHED_DL_MAC_BUFFER_REQ primitive.
Parameters of the SCHED_DL_PAGING_BUFFER_REQ primitive.
Parameters of the SCHED_DL_RACH_INFO_REQ primitive.
Parameters of the SCHED_DL_TRIGGER_REQ primitive.
Parameters of the SCHED_UL_CQI_INFO_REQ primitive.
Parameters of the SCHED_UL_MAC_CTRL_INFO_REQ primitive.
Parameters of the SCHED_UL_NOISE_INTERFERENCE_REQ primitive.
Parameters of the SCHED_UL_SR_INFO_REQ primitive.
Parameters of the SCHED_UL_TRIGGER_REQ primitive.
std::vector< BuildDataListElement_s > m_buildDataList
build data list
std::vector< BuildRarListElement_s > m_buildRarList
build rar list
uint8_t m_nrOfPdcchOfdmSymbols
number of PDCCH OFDM symbols
Parameters of the SCHED_UL_CONFIG_IND primitive.
std::vector< UlDciListElement_s > m_dciList
DCI list.
LteFlowId structure.
Definition lte-common.h:32
See section 4.3.9 rlcPDU_ListElement.
uint8_t m_logicalChannelIdentity
logical channel identity
See section 4.3.2 ulDciListElement.
int8_t m_pdcchPowerOffset
CCH power offset.
int8_t m_tpc
Tx power control command.
uint8_t m_dai
DL assignment index.
uint8_t m_cceIndex
Control Channel Element index.
uint8_t m_ulIndex
UL index.
uint8_t m_ueTxAntennaSelection
UE antenna selection.
bool m_cqiRequest
CQI request.
uint8_t m_freqHopping
freq hopping
uint8_t m_aggrLevel
The aggregation level.
bool m_ulDelay
UL delay?
int8_t m_tpc
Tx power control command.
bool m_cqiRequest
CQI request?
bool m_hopping
hopping?
uint16_t m_tbSize
size
uint8_t m_rbLen
length
uint8_t m_mcs
MCS.
uint8_t m_rbStart
start
uint16_t m_rnti
RNTI.
tdbetsFlowPerf_t structure
double lastAveragedThroughput
last average throughput
Time flowStart
flow start time
unsigned long totalBytesTransmitted
total bytes transmitted
unsigned int lastTtiBytesTransmitted
last total bytes transmitted