1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*! \file eNB_scheduler.c
* \brief eNB scheduler top level function operates on per subframe basis
* \author Navid Nikaein and Raymond Knopp
* \date 2010 - 2014
* \email: navid.nikaein@eurecom.fr
* \version 0.5
* @ingroup _mac
*/
#include "assertions.h"
#include "targets/RT/USER/lte-softmodem.h"
#include "LAYER2/MAC/mac.h"
#include "LAYER2/MAC/mac_extern.h"
#include "LAYER2/MAC/mac_proto.h"
#include "common/utils/LOG/log.h"
#include "nfapi/oai_integration/vendor_ext.h"
#include "common/utils/LOG/vcd_signal_dumper.h"
#include "UTIL/OPT/opt.h"
#include "OCG.h"
#include "OCG_extern.h"
#include "RRC/LTE/rrc_extern.h"
#include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h"
//#include "LAYER2/MAC/pre_processor.c"
#include "pdcp.h"
//Agent-related headers
#include "flexran_agent_extern.h"
#include "flexran_agent_mac.h"
/* for fair round robin SCHED */
#include "eNB_scheduler_fairRR.h"
#if defined(ENABLE_ITTI)
#include "intertask_interface.h"
#endif
#include "assertions.h"
#define ENABLE_MAC_PAYLOAD_DEBUG
#define DEBUG_eNB_SCHEDULER 1
extern RAN_CONTEXT_t RC;
uint16_t pdcch_order_table[6] = { 31, 31, 511, 2047, 2047, 8191 };
//-----------------------------------------------------------------------------
/*
* Schedule periodic SRS
*/
void schedule_SRS(module_id_t module_idP,
frame_t frameP,
sub_frame_t subframeP)
//-----------------------------------------------------------------------------
{
int CC_id = 0;
int UE_id = -1;
uint8_t TSFC = 0;
uint8_t srs_SubframeConfig = 0;
uint16_t srsPeriodicity = 0;
uint16_t srsOffset = 0;
uint16_t deltaTSFC = 0; // bitmap
// table for TSFC (Period) and deltaSFC (offset)
const uint16_t deltaTSFCTabType1[15][2] = { {1, 1}, {1, 2}, {2, 2}, {1, 5}, {2, 5}, {4, 5}, {8, 5}, {3, 5}, {12, 5}, {1, 10}, {2, 10}, {4, 10}, {8, 10}, {351, 10}, {383, 10} }; // Table 5.5.3.3-2 3GPP 36.211 FDD
const uint16_t deltaTSFCTabType2[14][2] = { {2, 5}, {6, 5}, {10, 5}, {18, 5}, {14, 5}, {22, 5}, {26, 5}, {30, 5}, {70, 10}, {74, 10}, {194, 10}, {326, 10}, {586, 10}, {210, 10} }; // Table 5.5.3.3-2 3GPP 36.211 TDD
eNB_MAC_INST *eNB = RC.mac[module_idP];
UE_list_t *UE_list = &(eNB->UE_list);
nfapi_ul_config_request_body_t *ul_req = NULL;
UE_sched_ctrl *UE_scheduling_control = NULL;
COMMON_channels_t *cc = eNB->common_channels;
LTE_SoundingRS_UL_ConfigCommon_t *soundingRS_UL_ConfigCommon = NULL;
struct LTE_SoundingRS_UL_ConfigDedicated *soundingRS_UL_ConfigDedicated = NULL;
for (CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) {
soundingRS_UL_ConfigCommon = &(cc[CC_id].radioResourceConfigCommon->soundingRS_UL_ConfigCommon);
/* Check if SRS is enabled in this frame/subframe */
if (soundingRS_UL_ConfigCommon) {
srs_SubframeConfig = soundingRS_UL_ConfigCommon->choice.setup.srs_SubframeConfig;
if (cc[CC_id].tdd_Config == NULL) { // FDD
deltaTSFC = deltaTSFCTabType1[srs_SubframeConfig][0];
TSFC = deltaTSFCTabType1[srs_SubframeConfig][1];
} else { // TDD
deltaTSFC = deltaTSFCTabType2[srs_SubframeConfig][0];
TSFC = deltaTSFCTabType2[srs_SubframeConfig][1];
}
/* Sounding reference signal subframes are the subframes satisfying ns/2 mod TSFC (- deltaTSFC) */
uint16_t tmp = (subframeP % TSFC);
if ((1 << tmp) & deltaTSFC) {
/* This is an SRS subframe, loop over UEs */
for (UE_id = 0; UE_id < MAX_MOBILES_PER_ENB; UE_id++) {
if (!UE_list->active[UE_id]) {
continue;
}
/* Drop the allocation if the UE hasn't send RRCConnectionSetupComplete yet */
if (mac_eNB_get_rrc_status(module_idP, UE_RNTI(module_idP, UE_id)) < RRC_CONNECTED) {
continue;
}
AssertFatal(UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated != NULL,
"physicalConfigDedicated is null for UE %d\n",
UE_id);
/* CDRX condition on Active Time and SRS type-0 report (36.321 5.7) */
UE_scheduling_control = &(UE_list->UE_sched_ctrl[UE_id]);
/* Test if Active Time not running since 6+ subframes */
if (UE_scheduling_control->cdrx_configured == TRUE && UE_scheduling_control->in_active_time == FALSE) {
/*
* TODO: 6+ subframes condition not checked here
*/
continue;
}
ul_req = &(eNB->UL_req[CC_id].ul_config_request_body);
if ((soundingRS_UL_ConfigDedicated = UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated->soundingRS_UL_ConfigDedicated) != NULL) {
if (soundingRS_UL_ConfigDedicated->present == LTE_SoundingRS_UL_ConfigDedicated_PR_setup) {
get_srs_pos(&cc[CC_id],
soundingRS_UL_ConfigDedicated->choice.setup.srs_ConfigIndex,
&srsPeriodicity,
&srsOffset);
if (((10 * frameP + subframeP) % srsPeriodicity) == srsOffset) {
// Program SRS
ul_req->srs_present = 1;
nfapi_ul_config_request_pdu_t *ul_config_pdu = &(ul_req->ul_config_pdu_list[ul_req->number_of_pdus]);
memset((void *) ul_config_pdu, 0, sizeof(nfapi_ul_config_request_pdu_t));
ul_config_pdu->pdu_type = NFAPI_UL_CONFIG_SRS_PDU_TYPE;
ul_config_pdu->pdu_size = 2 + (uint8_t) (2 + sizeof(nfapi_ul_config_srs_pdu));
ul_config_pdu->srs_pdu.srs_pdu_rel8.tl.tag = NFAPI_UL_CONFIG_REQUEST_SRS_PDU_REL8_TAG;
ul_config_pdu->srs_pdu.srs_pdu_rel8.size = (uint8_t)sizeof(nfapi_ul_config_srs_pdu);
ul_config_pdu->srs_pdu.srs_pdu_rel8.rnti = UE_list->UE_template[CC_id][UE_id].rnti;
ul_config_pdu->srs_pdu.srs_pdu_rel8.srs_bandwidth = soundingRS_UL_ConfigDedicated->choice.setup.srs_Bandwidth;
ul_config_pdu->srs_pdu.srs_pdu_rel8.frequency_domain_position = soundingRS_UL_ConfigDedicated->choice.setup.freqDomainPosition;
ul_config_pdu->srs_pdu.srs_pdu_rel8.srs_hopping_bandwidth = soundingRS_UL_ConfigDedicated->choice.setup.srs_HoppingBandwidth;;
ul_config_pdu->srs_pdu.srs_pdu_rel8.transmission_comb = soundingRS_UL_ConfigDedicated->choice.setup.transmissionComb;
ul_config_pdu->srs_pdu.srs_pdu_rel8.i_srs = soundingRS_UL_ConfigDedicated->choice.setup.srs_ConfigIndex;
ul_config_pdu->srs_pdu.srs_pdu_rel8.sounding_reference_cyclic_shift = soundingRS_UL_ConfigDedicated->choice.setup.cyclicShift;
eNB->UL_req[CC_id].sfn_sf = (frameP << 4) + subframeP;
eNB->UL_req[CC_id].header.message_id = NFAPI_UL_CONFIG_REQUEST;
ul_req->number_of_pdus++;
} // if (((10*frameP+subframeP) % srsPeriodicity) == srsOffset)
} // if (soundingRS_UL_ConfigDedicated->present == SoundingRS_UL_ConfigDedicated_PR_setup)
} // if ((soundingRS_UL_ConfigDedicated = UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated->soundingRS_UL_ConfigDedicated)!=NULL)
} // end for loop on UE_id
} // if((1<<tmp) & deltaTSFC)
} // SRS config not NULL
} // end for loop on CC_id
}
//-----------------------------------------------------------------------------
/*
* Schedule the CSI (CQI/PMI/RI/PTI/CRI) periodic reception
*/
void schedule_CSI(module_id_t module_idP,
frame_t frameP,
sub_frame_t subframeP)
//-----------------------------------------------------------------------------
{
int CC_id = 0;
int UE_id = 0;
int H = 0;
uint16_t Npd = 0;
uint16_t N_OFFSET_CQI = 0;
struct LTE_CQI_ReportPeriodic *cqi_ReportPeriodic = NULL;
eNB_MAC_INST *eNB = RC.mac[module_idP];
UE_list_t *UE_list = &eNB->UE_list;
COMMON_channels_t *cc = NULL;
nfapi_ul_config_request_body_t *ul_req = NULL;
UE_sched_ctrl *UE_scheduling_control = NULL;
for (CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) {
cc = &eNB->common_channels[CC_id];
for (UE_id = 0; UE_id < MAX_MOBILES_PER_ENB; UE_id++) {
if (UE_list->active[UE_id] == FALSE) {
continue;
}
/* Drop the allocation if the UE hasn't sent RRCConnectionSetupComplete yet */
if (mac_eNB_get_rrc_status(module_idP, UE_RNTI(module_idP, UE_id)) < RRC_CONNECTED) {
continue;
}
AssertFatal(UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated != NULL,
"physicalConfigDedicated is null for UE %d\n",
UE_id);
/*
* CDRX condition on Active Time and CSI report on PUCCH (36.321 5.7).
* Here we consider classic periodic reports on PUCCH without PUSCH simultaneous transmission condition.
* TODO: add the handling or test on simultaneous PUCCH/PUSCH transmission
*/
UE_scheduling_control = &(UE_list->UE_sched_ctrl[UE_id]);
if (UE_scheduling_control->cdrx_configured == TRUE) {
/* Test if CQI masking activated */
if (UE_scheduling_control->cqi_mask_boolean == TRUE) {
// CQI masking => test if onDurationTime not running since 6+ subframe
if (UE_scheduling_control->on_duration_timer == 0) {
/*
* TODO: 6+ subframes condition not checked here
*/
continue;
}
} else { // No CQI masking => test if Active Time not running since 6+ subframe
if (UE_scheduling_control->in_active_time == FALSE) {
/*
* TODO: 6+ subframes condition not checked here
*/
continue;
}
}
}
ul_req = &(eNB->UL_req[CC_id].ul_config_request_body);
if (UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated->cqi_ReportConfig != NULL) {
cqi_ReportPeriodic = UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated->cqi_ReportConfig->cqi_ReportPeriodic;
if (cqi_ReportPeriodic != NULL) {
/* Rel8 Periodic CSI (CQI/PMI/RI) reporting */
if (cqi_ReportPeriodic->present != LTE_CQI_ReportPeriodic_PR_release) {
get_csi_params(cc, cqi_ReportPeriodic, &Npd, &N_OFFSET_CQI, &H);
if ((((frameP * 10) + subframeP) % Npd) == N_OFFSET_CQI) { // CQI periodic opportunity
UE_scheduling_control->feedback_cnt[CC_id] = (((frameP * 10) + subframeP) / Npd) % H;
// Program CQI
nfapi_ul_config_request_pdu_t *ul_config_pdu = &ul_req->ul_config_pdu_list[ul_req->number_of_pdus];
memset((void *) ul_config_pdu, 0, sizeof(nfapi_ul_config_request_pdu_t));
ul_config_pdu->pdu_type = NFAPI_UL_CONFIG_UCI_CQI_PDU_TYPE;
ul_config_pdu->pdu_size = 2 + (uint8_t) (2 + sizeof(nfapi_ul_config_uci_cqi_pdu));
ul_config_pdu->uci_cqi_pdu.ue_information.ue_information_rel8.tl.tag = NFAPI_UL_CONFIG_REQUEST_UE_INFORMATION_REL8_TAG;
ul_config_pdu->uci_cqi_pdu.ue_information.ue_information_rel8.rnti = UE_list->UE_template[CC_id][UE_id].rnti;
ul_config_pdu->uci_cqi_pdu.cqi_information.cqi_information_rel8.tl.tag = NFAPI_UL_CONFIG_REQUEST_CQI_INFORMATION_REL8_TAG;
ul_config_pdu->uci_cqi_pdu.cqi_information.cqi_information_rel8.pucch_index = cqi_ReportPeriodic->choice.setup.cqi_PUCCH_ResourceIndex;
ul_config_pdu->uci_cqi_pdu.cqi_information.cqi_information_rel8.dl_cqi_pmi_size = get_rel8_dl_cqi_pmi_size(&UE_list->UE_sched_ctrl[UE_id], CC_id, cc, get_tmode(module_idP, CC_id, UE_id), cqi_ReportPeriodic);
ul_req->number_of_pdus++;
ul_req->tl.tag = NFAPI_UL_CONFIG_REQUEST_BODY_TAG;
#if (LTE_RRC_VERSION >= MAKE_VERSION(10, 0, 0))
// PUT rel10-13 UCI options here
#endif
} else if (cqi_ReportPeriodic->choice.setup.ri_ConfigIndex != NULL) {
if ((((frameP * 10) + subframeP) % ((H * Npd) << (*cqi_ReportPeriodic->choice.setup.ri_ConfigIndex / 161))) ==
N_OFFSET_CQI + (*cqi_ReportPeriodic->choice.setup.ri_ConfigIndex % 161)) { // RI opportunity
// Program RI
nfapi_ul_config_request_pdu_t *ul_config_pdu = &ul_req->ul_config_pdu_list[ul_req->number_of_pdus];
memset((void *) ul_config_pdu, 0, sizeof(nfapi_ul_config_request_pdu_t));
ul_config_pdu->pdu_type = NFAPI_UL_CONFIG_UCI_CQI_PDU_TYPE;
ul_config_pdu->pdu_size = 2 + (uint8_t) (2 + sizeof(nfapi_ul_config_uci_cqi_pdu));
ul_config_pdu->uci_cqi_pdu.ue_information.ue_information_rel8.tl.tag = NFAPI_UL_CONFIG_REQUEST_UE_INFORMATION_REL8_TAG;
ul_config_pdu->uci_cqi_pdu.ue_information.ue_information_rel8.rnti = UE_list->UE_template[CC_id][UE_id].rnti;
ul_config_pdu->uci_cqi_pdu.cqi_information.cqi_information_rel8.tl.tag = NFAPI_UL_CONFIG_REQUEST_CQI_INFORMATION_REL8_TAG;
ul_config_pdu->uci_cqi_pdu.cqi_information.cqi_information_rel8.pucch_index = cqi_ReportPeriodic->choice.setup.cqi_PUCCH_ResourceIndex;
ul_config_pdu->uci_cqi_pdu.cqi_information.cqi_information_rel8.dl_cqi_pmi_size = (cc->p_eNB == 2) ? 1 : 2;
RC.mac[module_idP]->UL_req[CC_id].sfn_sf = (frameP << 4) + subframeP;
ul_req->number_of_pdus++;
ul_req->tl.tag = NFAPI_UL_CONFIG_REQUEST_BODY_TAG;
}
}
} // if CSI Periodic is not release state
} // if (cqi_ReportPeriodic != NULL)
} // if cqi_ReportConfig != NULL
} // for (UE_id=UE_list->head; UE_id>=0; UE_id=UE_list->next[UE_id]) {
} // for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
}
//-----------------------------------------------------------------------------
/*
* Schedule a possible Scheduling Request reception
*/
void
schedule_SR (module_id_t module_idP,
frame_t frameP,
sub_frame_t subframeP)
//-----------------------------------------------------------------------------
{
int skip_ue = 0;
int is_harq = 0;
int pdu_list_index = 0;
eNB_MAC_INST *eNB = RC.mac[module_idP];
UE_list_t *UE_list = &eNB->UE_list;
nfapi_ul_config_request_t *ul_req = NULL;
nfapi_ul_config_request_body_t *ul_req_body = NULL;
LTE_SchedulingRequestConfig_t *SRconfig = NULL;
nfapi_ul_config_sr_information sr;
for (int CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) {
eNB->UL_req[CC_id].sfn_sf = (frameP << 4) + subframeP;
for (int UE_id = 0; UE_id < MAX_MOBILES_PER_ENB; UE_id++) {
if (!UE_list->active[UE_id]) {
continue;
}
if (UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated == NULL) continue;
if ((SRconfig = UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated->schedulingRequestConfig) != NULL) {
if (SRconfig->present == LTE_SchedulingRequestConfig_PR_setup) {
if (SRconfig->choice.setup.sr_ConfigIndex <= 4) { // 5 ms SR period
if ((subframeP % 5) != SRconfig->choice.setup.sr_ConfigIndex) continue;
} else if (SRconfig->choice.setup.sr_ConfigIndex <= 14) { // 10 ms SR period
if (subframeP != (SRconfig->choice.setup.sr_ConfigIndex - 5)) continue;
} else if (SRconfig->choice.setup.sr_ConfigIndex <= 34) { // 20 ms SR period
if ((10 * (frameP & 1) + subframeP) != (SRconfig->choice.setup.sr_ConfigIndex - 15)) continue;
} else if (SRconfig->choice.setup.sr_ConfigIndex <= 74) { // 40 ms SR period
if ((10 * (frameP & 3) + subframeP) != (SRconfig->choice.setup.sr_ConfigIndex - 35)) continue;
} else if (SRconfig->choice.setup.sr_ConfigIndex <= 154) { // 80 ms SR period
if ((10 * (frameP & 7) + subframeP) != (SRconfig->choice.setup.sr_ConfigIndex - 75)) continue;
}
} // SRconfig->present == SchedulingRequestConfig_PR_setup)
} // SRconfig = UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated->schedulingRequestConfig)!=NULL)
/* If we get here there is some PUCCH1 reception to schedule for SR */
ul_req = &(eNB->UL_req[CC_id]);
ul_req_body = &(ul_req->ul_config_request_body);
skip_ue = 0;
is_harq = 0;
pdu_list_index = 0;
/* Check that there is no existing UL grant for ULSCH which overrides the SR */
for (int i = 0; i < ul_req_body->number_of_pdus; i++) {
if (((ul_req_body->ul_config_pdu_list[i].pdu_type == NFAPI_UL_CONFIG_ULSCH_PDU_TYPE) ||
(ul_req_body->ul_config_pdu_list[i].pdu_type == NFAPI_UL_CONFIG_ULSCH_HARQ_PDU_TYPE) ||
(ul_req_body->ul_config_pdu_list[i].pdu_type == NFAPI_UL_CONFIG_ULSCH_CQI_RI_PDU_TYPE) ||
(ul_req_body->ul_config_pdu_list[i].pdu_type == NFAPI_UL_CONFIG_ULSCH_CQI_HARQ_RI_PDU_TYPE)) &&
(ul_req_body->ul_config_pdu_list[i].ulsch_pdu.ulsch_pdu_rel8.rnti == UE_list->UE_template[CC_id][UE_id].rnti)) {
skip_ue = 1;
pdu_list_index = i;
break;
}
/* If there is already an HARQ pdu, convert to SR_HARQ */
else if ((ul_req_body->ul_config_pdu_list[i].pdu_type == NFAPI_UL_CONFIG_UCI_HARQ_PDU_TYPE) &&
(ul_req_body->ul_config_pdu_list[i].uci_harq_pdu.ue_information.ue_information_rel8.rnti == UE_list->UE_template[CC_id][UE_id].rnti)) {
is_harq = 1;
pdu_list_index = i;
break;
}
}
/* Drop the allocation because ULSCH will handle it with BSR */
if (skip_ue == 1) continue;
LOG_D(MAC, "Frame %d, Subframe %d : Scheduling SR for UE %d/%x is_harq:%d \n",
frameP,
subframeP,
UE_id,
UE_list->UE_template[CC_id][UE_id].rnti,
is_harq);
/* Check Rel10 or Rel8 SR */
#if (LTE_RRC_VERSION >= MAKE_VERSION(10, 0, 0))
if ((UE_list-> UE_template[CC_id][UE_id].physicalConfigDedicated->ext2) &&
(UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated->ext2->schedulingRequestConfig_v1020) &&
(UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated->ext2->schedulingRequestConfig_v1020)) {
sr.sr_information_rel10.tl.tag = NFAPI_UL_CONFIG_REQUEST_SR_INFORMATION_REL10_TAG;
sr.sr_information_rel10.number_of_pucch_resources = 1;
sr.sr_information_rel10.pucch_index_p1 = *UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated->ext2->schedulingRequestConfig_v1020->sr_PUCCH_ResourceIndexP1_r10;
LOG_D(MAC, "REL10 PUCCH INDEX P1:%d \n", sr.sr_information_rel10.pucch_index_p1);
} else
#endif
{
sr.sr_information_rel8.tl.tag = NFAPI_UL_CONFIG_REQUEST_SR_INFORMATION_REL8_TAG;
sr.sr_information_rel8.pucch_index = UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated->schedulingRequestConfig->choice.setup.sr_PUCCH_ResourceIndex;
LOG_D(MAC, "REL8 PUCCH INDEX:%d\n", sr.sr_information_rel8.pucch_index);
}
/* If there is already an HARQ pdu, convert to SR_HARQ */
if (is_harq) {
nfapi_ul_config_harq_information harq = ul_req_body->ul_config_pdu_list[pdu_list_index].uci_harq_pdu.harq_information;
ul_req_body->ul_config_pdu_list[pdu_list_index].pdu_type = NFAPI_UL_CONFIG_UCI_SR_HARQ_PDU_TYPE;
ul_req_body->ul_config_pdu_list[pdu_list_index].uci_sr_harq_pdu.sr_information = sr;
ul_req_body->ul_config_pdu_list[pdu_list_index].uci_sr_harq_pdu.harq_information = harq;
} else {
ul_req_body->ul_config_pdu_list[ul_req_body->number_of_pdus].pdu_type = NFAPI_UL_CONFIG_UCI_SR_PDU_TYPE;
ul_req_body->ul_config_pdu_list[ul_req_body->number_of_pdus].uci_sr_pdu.ue_information.ue_information_rel8.tl.tag = NFAPI_UL_CONFIG_REQUEST_UE_INFORMATION_REL8_TAG;
ul_req_body->ul_config_pdu_list[ul_req_body->number_of_pdus].uci_sr_pdu.ue_information.ue_information_rel8.rnti = UE_list->UE_template[CC_id][UE_id].rnti;
ul_req_body->ul_config_pdu_list[ul_req_body->number_of_pdus].uci_sr_pdu.ue_information.ue_information_rel11.tl.tag = 0;
ul_req_body->ul_config_pdu_list[ul_req_body->number_of_pdus].uci_sr_pdu.ue_information.ue_information_rel13.tl.tag = 0;
ul_req_body->ul_config_pdu_list[ul_req_body->number_of_pdus].uci_sr_pdu.sr_information = sr;
ul_req_body->number_of_pdus++;
} // if (is_harq)
ul_req_body->tl.tag = NFAPI_UL_CONFIG_REQUEST_BODY_TAG;
} // for (int UE_id = 0; UE_id < MAX_MOBILES_PER_ENB; UE_id++)
} // for (CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++)
}
void
check_ul_failure(module_id_t module_idP, int CC_id, int UE_id,
frame_t frameP, sub_frame_t subframeP) {
UE_list_t *UE_list = &RC.mac[module_idP]->UE_list;
nfapi_dl_config_request_t *DL_req = &RC.mac[module_idP]->DL_req[0];
uint16_t rnti = UE_RNTI(module_idP, UE_id);
COMMON_channels_t *cc = RC.mac[module_idP]->common_channels;
// check uplink failure
if ((UE_list->UE_sched_ctrl[UE_id].ul_failure_timer > 0) &&
(UE_list->UE_sched_ctrl[UE_id].ul_out_of_sync == 0)) {
if (UE_list->UE_sched_ctrl[UE_id].ul_failure_timer == 1)
LOG_I(MAC, "UE %d rnti %x: UL Failure timer %d \n", UE_id, rnti,
UE_list->UE_sched_ctrl[UE_id].ul_failure_timer);
if (UE_list->UE_sched_ctrl[UE_id].ra_pdcch_order_sent == 0) {
UE_list->UE_sched_ctrl[UE_id].ra_pdcch_order_sent = 1;
// add a format 1A dci for this UE to request an RA procedure (only one UE per subframe)
nfapi_dl_config_request_pdu_t *dl_config_pdu = &DL_req[CC_id].dl_config_request_body.dl_config_pdu_list[DL_req[CC_id].dl_config_request_body.number_pdu];
memset((void *) dl_config_pdu, 0,sizeof(nfapi_dl_config_request_pdu_t));
dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_DCI_DL_PDU_TYPE;
dl_config_pdu->pdu_size = (uint8_t) (2 + sizeof(nfapi_dl_config_dci_dl_pdu));
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.tl.tag = NFAPI_DL_CONFIG_REQUEST_DCI_DL_PDU_REL8_TAG;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.dci_format = NFAPI_DL_DCI_FORMAT_1A;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.aggregation_level = get_aggregation(get_bw_index(module_idP, CC_id),
UE_list->UE_sched_ctrl[UE_id].
dl_cqi[CC_id], format1A);
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti = rnti;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti_type = 1; // CRNTI : see Table 4-10 from SCF082 - nFAPI specifications
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.transmission_power = 6000; // equal to RS power
AssertFatal((cc[CC_id].mib->message.dl_Bandwidth >= 0) && (cc[CC_id].mib->message.dl_Bandwidth < 6),
"illegal dl_Bandwidth %d\n",
(int) cc[CC_id].mib->message.dl_Bandwidth);
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.resource_block_coding = pdcch_order_table[cc[CC_id].mib->message.dl_Bandwidth];
DL_req[CC_id].dl_config_request_body.number_dci++;
DL_req[CC_id].dl_config_request_body.number_pdu++;
DL_req[CC_id].dl_config_request_body.tl.tag = NFAPI_DL_CONFIG_REQUEST_BODY_TAG;
LOG_D(MAC,
"UE %d rnti %x: sending PDCCH order for RAPROC (failure timer %d), resource_block_coding %d \n",
UE_id, rnti,
UE_list->UE_sched_ctrl[UE_id].ul_failure_timer,
dl_config_pdu->dci_dl_pdu.
dci_dl_pdu_rel8.resource_block_coding);
} else { // ra_pdcch_sent==1
LOG_D(MAC,
"UE %d rnti %x: sent PDCCH order for RAPROC waiting (failure timer %d) \n",
UE_id, rnti,
UE_list->UE_sched_ctrl[UE_id].ul_failure_timer);
if ((UE_list->UE_sched_ctrl[UE_id].ul_failure_timer % 80) == 0) UE_list->UE_sched_ctrl[UE_id].ra_pdcch_order_sent = 0; // resend every 8 frames
}
UE_list->UE_sched_ctrl[UE_id].ul_failure_timer++;
// check threshold
if (UE_list->UE_sched_ctrl[UE_id].ul_failure_timer > 4000) {
// note: probably ul_failure_timer should be less than UE radio link failure time(see T310/N310/N311)
if (NODE_IS_DU(RC.rrc[module_idP]->node_type)) {
MessageDef *m = itti_alloc_new_message(TASK_MAC_ENB, F1AP_UE_CONTEXT_RELEASE_REQ);
F1AP_UE_CONTEXT_RELEASE_REQ(m).rnti = rnti;
F1AP_UE_CONTEXT_RELEASE_REQ(m).cause = F1AP_CAUSE_RADIO_NETWORK;
F1AP_UE_CONTEXT_RELEASE_REQ(m).cause_value = 1; // 1 = F1AP_CauseRadioNetwork_rl_failure
F1AP_UE_CONTEXT_RELEASE_REQ(m).rrc_container = NULL;
F1AP_UE_CONTEXT_RELEASE_REQ(m).rrc_container_length = 0;
itti_send_msg_to_task(TASK_DU_F1, module_idP, m);
} else {
// inform RRC of failure and clear timer
LOG_I(MAC, "UE %d rnti %x: UL Failure after repeated PDCCH orders: Triggering RRC \n",
UE_id,
rnti);
mac_eNB_rrc_ul_failure(module_idP,
CC_id,
frameP,
subframeP,
rnti);
}
UE_list->UE_sched_ctrl[UE_id].ul_failure_timer = 0;
UE_list->UE_sched_ctrl[UE_id].ul_out_of_sync = 1;
}
} // ul_failure_timer>0
}
void
clear_nfapi_information(eNB_MAC_INST *eNB, int CC_idP,
frame_t frameP, sub_frame_t subframeP) {
nfapi_dl_config_request_t *DL_req = &eNB->DL_req[0];
nfapi_ul_config_request_t *UL_req = &eNB->UL_req[0];
nfapi_hi_dci0_request_t *HI_DCI0_req = &eNB->HI_DCI0_req[CC_idP][subframeP];
nfapi_tx_request_t *TX_req = &eNB->TX_req[0];
eNB->pdu_index[CC_idP] = 0;
if (NFAPI_MODE == NFAPI_MODE_PNF || NFAPI_MODE == NFAPI_MONOLITHIC) { // monolithic or PNF
DL_req[CC_idP].dl_config_request_body.number_pdcch_ofdm_symbols = 1;
DL_req[CC_idP].dl_config_request_body.number_dci = 0;
DL_req[CC_idP].dl_config_request_body.number_pdu = 0;
DL_req[CC_idP].dl_config_request_body.number_pdsch_rnti = 0;
DL_req[CC_idP].dl_config_request_body.transmission_power_pcfich = 6000;
DL_req[CC_idP].sfn_sf = subframeP + (frameP<<4);
HI_DCI0_req->hi_dci0_request_body.sfnsf = subframeP + (frameP<<4);
HI_DCI0_req->hi_dci0_request_body.number_of_dci = 0;
UL_req[CC_idP].ul_config_request_body.number_of_pdus = 0;
UL_req[CC_idP].ul_config_request_body.rach_prach_frequency_resources = 0; // ignored, handled by PHY for now
UL_req[CC_idP].ul_config_request_body.srs_present = 0; // ignored, handled by PHY for now
TX_req[CC_idP].tx_request_body.number_of_pdus = 0;
}
}
void
copy_ulreq(module_id_t module_idP, frame_t frameP, sub_frame_t subframeP) {
int CC_id;
eNB_MAC_INST *mac = RC.mac[module_idP];
for (CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) {
nfapi_ul_config_request_t *ul_req_tmp = &mac->UL_req_tmp[CC_id][subframeP];
nfapi_ul_config_request_t *ul_req = &mac->UL_req[CC_id];
nfapi_ul_config_request_pdu_t *ul_req_pdu = ul_req->ul_config_request_body.ul_config_pdu_list;
*ul_req = *ul_req_tmp;
// Restore the pointer
ul_req->ul_config_request_body.ul_config_pdu_list = ul_req_pdu;
ul_req->sfn_sf = (frameP<<4) + subframeP;
ul_req_tmp->ul_config_request_body.number_of_pdus = 0;
if (ul_req->ul_config_request_body.number_of_pdus>0) {
LOG_D(PHY, "%s() active NOW (frameP:%d subframeP:%d) pdus:%d\n", __FUNCTION__, frameP, subframeP, ul_req->ul_config_request_body.number_of_pdus);
}
memcpy((void *)ul_req->ul_config_request_body.ul_config_pdu_list,
(void *)ul_req_tmp->ul_config_request_body.ul_config_pdu_list,
ul_req->ul_config_request_body.number_of_pdus*sizeof(nfapi_ul_config_request_pdu_t));
}
}
void
eNB_dlsch_ulsch_scheduler(module_id_t module_idP,
frame_t frameP,
sub_frame_t subframeP)
{
int mbsfn_status[MAX_NUM_CCs];
protocol_ctxt_t ctxt;
rnti_t rnti = 0;
int CC_id = 0;
int UE_id = -1;
eNB_MAC_INST *eNB = RC.mac[module_idP];
UE_list_t *UE_list = &(eNB->UE_list);
COMMON_channels_t *cc = eNB->common_channels;
UE_sched_ctrl *UE_scheduling_control = NULL;
start_meas(&(eNB->eNB_scheduler));
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_DLSCH_ULSCH_SCHEDULER, VCD_FUNCTION_IN);
eNB->frame = frameP;
eNB->subframe = subframeP;
for (CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) {
mbsfn_status[CC_id] = 0;
/* Clear vrb_maps */
memset(cc[CC_id].vrb_map, 0, 100);
memset(cc[CC_id].vrb_map_UL, 0, 100);
#if (LTE_RRC_VERSION >= MAKE_VERSION(10, 0, 0))
cc[CC_id].mcch_active = 0;
#endif
clear_nfapi_information(RC.mac[module_idP], CC_id, frameP, subframeP);
}
/* Refresh UE list based on UEs dropped by PHY in previous subframe */
for (UE_id = 0; UE_id < MAX_MOBILES_PER_ENB; UE_id++) {
if (UE_list->active[UE_id]) {
rnti = UE_RNTI(module_idP, UE_id);
CC_id = UE_PCCID(module_idP, UE_id);
UE_scheduling_control = &(UE_list->UE_sched_ctrl[UE_id]);
if (((frameP & 127) == 0) && (subframeP == 0)) {
LOG_I(MAC,"UE rnti %x : %s, PHR %d dB DL CQI %d PUSCH SNR %d PUCCH SNR %d\n",
rnti,
UE_scheduling_control->ul_out_of_sync == 0 ? "in synch" : "out of sync",
UE_list->UE_template[CC_id][UE_id].phr_info,
UE_scheduling_control->dl_cqi[CC_id],
(5 * UE_scheduling_control->pusch_snr[CC_id] - 640) / 10,
(5 * UE_scheduling_control->pucch1_snr[CC_id] - 640) / 10);
}
RC.eNB[module_idP][CC_id]->pusch_stats_bsr[UE_id][(frameP * 10) + subframeP] = -63;
if (UE_id == UE_list->head) {
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_UE0_BSR, RC.eNB[module_idP][CC_id]->pusch_stats_bsr[UE_id][(frameP * 10) + subframeP]);
}
/* Set and increment CDRX related timers */
if (UE_scheduling_control->cdrx_configured == TRUE) {
boolean_t harq_active_time_condition = FALSE;
UE_TEMPLATE *UE_template = NULL;
unsigned long active_time_condition = 0; // variable used only for tracing purpose
/* (UL and DL) HARQ RTT timers and DRX retransmission timers */
for (int harq_process_id = 0; harq_process_id < 8; harq_process_id++) {
/* DL asynchronous HARQ process */
if (UE_scheduling_control->drx_retransmission_timer[harq_process_id] > 0) {
UE_scheduling_control->drx_retransmission_timer[harq_process_id]++;
if (UE_scheduling_control->drx_retransmission_timer[harq_process_id] > UE_scheduling_control->drx_retransmission_timer_thres[harq_process_id]) {
UE_scheduling_control->drx_retransmission_timer[harq_process_id] = 0;
}
}
if (UE_scheduling_control->harq_rtt_timer[CC_id][harq_process_id] > 0) {
UE_scheduling_control->harq_rtt_timer[CC_id][harq_process_id]++;
if (UE_scheduling_control->harq_rtt_timer[CC_id][harq_process_id] > 8) {
/* Note: here drx_retransmission_timer is restarted instead of started in the specification */
UE_scheduling_control->drx_retransmission_timer[harq_process_id] = 1; // started when HARQ RTT timer expires
UE_scheduling_control->harq_rtt_timer[CC_id][harq_process_id] = 0;
}
}
/* UL asynchronous HARQ process: only UL HARQ RTT timer is implemented (hence not implemented) */
if (UE_scheduling_control->ul_harq_rtt_timer[CC_id][harq_process_id] > 0) {
UE_scheduling_control->ul_harq_rtt_timer[CC_id][harq_process_id]++;
if (UE_scheduling_control->ul_harq_rtt_timer[CC_id][harq_process_id] > 4) {
/*
* TODO: implement the handling of UL asynchronous HARQ
* drx_ULRetransmissionTimer should be (re)started here
*/
UE_scheduling_control->ul_harq_rtt_timer[CC_id][harq_process_id] = 0;
}
}
/* UL synchronous HARQ process */
if (UE_scheduling_control->ul_synchronous_harq_timer[CC_id][harq_process_id] > 0) {
UE_scheduling_control->ul_synchronous_harq_timer[CC_id][harq_process_id]++;
if (UE_scheduling_control->ul_synchronous_harq_timer[CC_id][harq_process_id] > 5) {
harq_active_time_condition = TRUE;
UE_scheduling_control->ul_synchronous_harq_timer[CC_id][harq_process_id] = 0;
active_time_condition = 5; // for tracing purpose
}
}
}
/* On duration timer */
if (UE_scheduling_control->on_duration_timer > 0) {
UE_scheduling_control->on_duration_timer++;
if (UE_scheduling_control->on_duration_timer > UE_scheduling_control->on_duration_timer_thres) {
UE_scheduling_control->on_duration_timer = 0;
}
}
/* DRX inactivity timer */
if (UE_scheduling_control->drx_inactivity_timer > 0) {
UE_scheduling_control->drx_inactivity_timer++;
if (UE_scheduling_control->drx_inactivity_timer > (UE_scheduling_control->drx_inactivity_timer_thres + 1)) {
/* Note: the +1 on the threshold is due to information in table C-1 of 36.321 */
UE_scheduling_control->drx_inactivity_timer = 0;
/* When timer expires switch into short or long DRX cycle */
if (UE_scheduling_control->drx_shortCycle_timer_thres > 0) {
UE_scheduling_control->in_short_drx_cycle = TRUE;
UE_scheduling_control->drx_shortCycle_timer = 0;
UE_scheduling_control->in_long_drx_cycle = FALSE;
} else {
UE_scheduling_control->in_long_drx_cycle = TRUE;
}
}
}
/* Short DRX Cycle */
if (UE_scheduling_control->in_short_drx_cycle == TRUE) {
UE_scheduling_control->drx_shortCycle_timer++;
/* When the Short DRX cycles are over, switch to long DRX cycle */
if (UE_scheduling_control->drx_shortCycle_timer > UE_scheduling_control->drx_shortCycle_timer_thres) {
UE_scheduling_control->drx_shortCycle_timer = 0;
UE_scheduling_control->in_short_drx_cycle = FALSE;
UE_scheduling_control->in_long_drx_cycle = TRUE;
UE_scheduling_control->drx_longCycle_timer = 0;
}
} else {
UE_scheduling_control->drx_shortCycle_timer = 0;
}
/* Long DRX Cycle */
if (UE_scheduling_control->in_long_drx_cycle == TRUE) {
UE_scheduling_control->drx_longCycle_timer++;
if (UE_scheduling_control->drx_longCycle_timer > UE_scheduling_control->drx_longCycle_timer_thres) {
UE_scheduling_control->drx_longCycle_timer = 1;
}
} else {
UE_scheduling_control->drx_longCycle_timer = 0;
}
/* Check for error cases */
if ((UE_scheduling_control->in_short_drx_cycle == TRUE) && (UE_scheduling_control->in_long_drx_cycle == TRUE)) {
LOG_E(MAC, "Error in C-DRX: UE id %d is in both short and long DRX cycle. Should not happen. Back it to long cycle only\n", UE_id);
UE_scheduling_control->in_short_drx_cycle = FALSE;
}
/* Condition to start On Duration Timer */
if (UE_scheduling_control->in_short_drx_cycle == TRUE && UE_scheduling_control->on_duration_timer == 0) {
if (((frameP * 10) + subframeP) % (UE_scheduling_control->short_drx_cycle_duration) ==
(UE_scheduling_control->drx_start_offset) % (UE_scheduling_control->short_drx_cycle_duration)) {
UE_scheduling_control->on_duration_timer = 1;
}
} else if (UE_scheduling_control->in_long_drx_cycle == TRUE && UE_scheduling_control->on_duration_timer == 0) {
if (((frameP * 10) + subframeP) % (UE_scheduling_control->drx_longCycle_timer_thres) ==
(UE_scheduling_control->drx_start_offset)) {
UE_scheduling_control->on_duration_timer = 1;
}
}
/* Update Active Time status of UE
* Based on 36.321 5.7 the differents conditions for the UE to be in Acttive Should be check ONLY
* here for the current subframe. The variable 'UE_scheduling_control->in_active_time' should be updated
* ONLY here. The variable can then be used for testing the actual state of the UE for scheduling purpose.
*/
UE_template = &(UE_list->UE_template[CC_id][UE_id]);
/* (a)synchronous HARQ processes handling for Active Time */
for (int harq_process_id = 0; harq_process_id < 8; harq_process_id++) {
if (UE_scheduling_control->drx_retransmission_timer[harq_process_id] > 0) {
harq_active_time_condition = TRUE;
active_time_condition = 2; // for tracing purpose
break;
}
}
/* Active time conditions */
if (UE_scheduling_control->on_duration_timer > 0 ||
UE_scheduling_control->drx_inactivity_timer > 1 ||
harq_active_time_condition ||
UE_template->ul_SR > 0) {
UE_scheduling_control->in_active_time = TRUE;
} else {
UE_scheduling_control->in_active_time = FALSE;
}
/* BEGIN VCD */
if (UE_id == 0) {
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_ON_DURATION_TIMER, (unsigned long) UE_scheduling_control->on_duration_timer);
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_DRX_INACTIVITY, (unsigned long) UE_scheduling_control->drx_inactivity_timer);
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_DRX_SHORT_CYCLE, (unsigned long) UE_scheduling_control->drx_shortCycle_timer);
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_DRX_LONG_CYCLE, (unsigned long) UE_scheduling_control->drx_longCycle_timer);
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_DRX_RETRANSMISSION_HARQ0, (unsigned long) UE_scheduling_control->drx_retransmission_timer[0]);
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_DRX_ACTIVE_TIME, (unsigned long) UE_scheduling_control->in_active_time);
/* For tracing purpose */
if (UE_template->ul_SR > 0) {
active_time_condition = 1;
} else if ((UE_scheduling_control->on_duration_timer > 0) && (active_time_condition == 0)) {
active_time_condition = 3;
} else if ((UE_scheduling_control->drx_inactivity_timer > 1) && (active_time_condition == 0)) {
active_time_condition = 4;
}
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_DRX_ACTIVE_TIME_CONDITION, (unsigned long) active_time_condition);
}
/* END VCD */
/* DCI0 ongoing timer */
if (UE_scheduling_control->dci0_ongoing_timer > 0) {
if (UE_scheduling_control->dci0_ongoing_timer > 7) {
UE_scheduling_control->dci0_ongoing_timer = 0;
} else {
UE_scheduling_control->dci0_ongoing_timer++;
}
}
} else { // else: CDRX not configured
/* Note: (UL) HARQ RTT timers processing is done here and can be used by other features than CDRX */
/* HARQ RTT timers */
for (int harq_process_id = 0; harq_process_id < 8; harq_process_id++) {
if (UE_scheduling_control->harq_rtt_timer[CC_id][harq_process_id] > 0) {
UE_scheduling_control->harq_rtt_timer[CC_id][harq_process_id]++;
if (UE_scheduling_control->harq_rtt_timer[CC_id][harq_process_id] > 8) {
UE_scheduling_control->harq_rtt_timer[CC_id][harq_process_id] = 0;
}
}
if (UE_scheduling_control->ul_harq_rtt_timer[CC_id][harq_process_id] > 0) {
UE_scheduling_control->ul_harq_rtt_timer[CC_id][harq_process_id]++;
if (UE_scheduling_control->ul_harq_rtt_timer[CC_id][harq_process_id] > 4) {
UE_scheduling_control->ul_harq_rtt_timer[CC_id][harq_process_id] = 0;
}
}
} // end loop harq process
} // end else CDRX not configured
/* Increment these timers, they are cleared when we receive an sdu */
UE_scheduling_control->ul_inactivity_timer++;
UE_scheduling_control->cqi_req_timer++;
LOG_D(MAC, "UE %d/%x : ul_inactivity %d, cqi_req %d\n",
UE_id,
rnti,
UE_scheduling_control->ul_inactivity_timer,
UE_scheduling_control->cqi_req_timer);
check_ul_failure(module_idP, CC_id, UE_id, frameP, subframeP);
if (UE_scheduling_control->ue_reestablishment_reject_timer > 0) {
UE_scheduling_control->ue_reestablishment_reject_timer++;
if (UE_scheduling_control->ue_reestablishment_reject_timer >= UE_scheduling_control->ue_reestablishment_reject_timer_thres) {
UE_scheduling_control->ue_reestablishment_reject_timer = 0;
/* Clear reestablish_rnti_map */
if (UE_scheduling_control->ue_reestablishment_reject_timer_thres > 20) {
for (int ue_id_l = 0; ue_id_l < MAX_MOBILES_PER_ENB; ue_id_l++) {
if (reestablish_rnti_map[ue_id_l][0] == rnti) {
/* Clear currentC-RNTI from map */
reestablish_rnti_map[ue_id_l][0] = 0;
reestablish_rnti_map[ue_id_l][1] = 0;
break;
}
}
PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, module_idP, ENB_FLAG_YES, rnti, 0, 0,module_idP);
rrc_rlc_remove_ue(&ctxt);
pdcp_remove_UE(&ctxt);
}
/* Note: This should not be done in the MAC! */
for (int ii=0; ii<MAX_MOBILES_PER_ENB; ii++) {
LTE_eNB_ULSCH_t *ulsch = RC.eNB[module_idP][CC_id]->ulsch[ii];
if((ulsch != NULL) && (ulsch->rnti == rnti)) {
void clean_eNb_ulsch(LTE_eNB_ULSCH_t *ulsch);
LOG_I(MAC, "clean_eNb_ulsch UE %x \n", rnti);
clean_eNb_ulsch(ulsch);
}
}
for (int ii=0; ii<MAX_MOBILES_PER_ENB; ii++) {
LTE_eNB_DLSCH_t *dlsch = RC.eNB[module_idP][CC_id]->dlsch[ii][0];
if((dlsch != NULL) && (dlsch->rnti == rnti)) {
void clean_eNb_dlsch(LTE_eNB_DLSCH_t *dlsch);
LOG_I(MAC, "clean_eNb_dlsch UE %x \n", rnti);
clean_eNb_dlsch(dlsch);
}
}
for (int j = 0; j < 10; j++) {
nfapi_ul_config_request_body_t *ul_req_tmp = NULL;
ul_req_tmp = &(eNB->UL_req_tmp[CC_id][j].ul_config_request_body);
if (ul_req_tmp) {
int pdu_number = ul_req_tmp->number_of_pdus;
for (int pdu_index = pdu_number-1; pdu_index >= 0; pdu_index--) {
if (ul_req_tmp->ul_config_pdu_list[pdu_index].ulsch_pdu.ulsch_pdu_rel8.rnti == rnti) {
LOG_I(MAC, "remove UE %x from ul_config_pdu_list %d/%d\n",
rnti,
pdu_index,
pdu_number);
if (pdu_index < pdu_number -1) {
memcpy(&ul_req_tmp->ul_config_pdu_list[pdu_index],
&ul_req_tmp->ul_config_pdu_list[pdu_index+1],
(pdu_number-1-pdu_index) * sizeof(nfapi_ul_config_request_pdu_t));
}
ul_req_tmp->number_of_pdus--;
}
} // end for pdu_index
} // end if (ul_req_tmp)
} // end for j
rrc_mac_remove_ue(module_idP,rnti);
} // end if (UE_scheduling_control->ue_reestablishment_reject_timer >= UE_scheduling_control->ue_reestablishment_reject_timer_thres)
} // end if (UE_scheduling_control->ue_reestablishment_reject_timer > 0)
} // end if UE active
} // end for loop on UE_id
#if (!defined(PRE_SCD_THREAD))
PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, module_idP, ENB_FLAG_YES, NOT_A_RNTI, frameP, subframeP, module_idP);
pdcp_run(&ctxt);
rrc_rx_tx(&ctxt, CC_id);
#endif
#if (LTE_RRC_VERSION >= MAKE_VERSION(10, 0, 0))
for (CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) {
if (cc[CC_id].MBMS_flag > 0) {
start_meas(&RC.mac[module_idP]->schedule_mch);
mbsfn_status[CC_id] = schedule_MBMS(module_idP, CC_id, frameP, subframeP);
stop_meas(&RC.mac[module_idP]->schedule_mch);
}
}
#endif
static int debug_flag = 0;
void (*schedule_ulsch_p)(module_id_t module_idP, frame_t frameP, sub_frame_t subframe) = NULL;
void (*schedule_ue_spec_p)(module_id_t module_idP, frame_t frameP, sub_frame_t subframe, int *mbsfn_flag) = NULL;
if (eNB->scheduler_mode == SCHED_MODE_DEFAULT) {
schedule_ulsch_p = schedule_ulsch;
schedule_ue_spec_p = schedule_dlsch;
} else if (eNB->scheduler_mode == SCHED_MODE_FAIR_RR) {
memset(dlsch_ue_select, 0, sizeof(dlsch_ue_select));
schedule_ulsch_p = schedule_ulsch_fairRR;
schedule_ue_spec_p = schedule_ue_spec_fairRR;
}
if(debug_flag == 0){
LOG_E(MAC,"SCHED_MODE = %d\n", eNB->scheduler_mode);
debug_flag = 1;
}
/* This schedules MIB */
if ((subframeP == 0) && (frameP & 3) == 0)
schedule_mib(module_idP, frameP, subframeP);
if (get_softmodem_params()->phy_test == 0) {
/* This schedules SI for legacy LTE and eMTC starting in subframeP */
schedule_SI(module_idP, frameP, subframeP);
/* This schedules Paging in subframeP */
schedule_PCH(module_idP,frameP,subframeP);
/* This schedules Random-Access for legacy LTE and eMTC starting in subframeP */
schedule_RA(module_idP, frameP, subframeP);
/* Copy previously scheduled UL resources (ULSCH + HARQ) */
copy_ulreq(module_idP, frameP, subframeP);
/* This schedules SRS in subframeP */
schedule_SRS(module_idP, frameP, subframeP);
/* This schedules ULSCH in subframeP (dci0) */
if (schedule_ulsch_p != NULL) {
schedule_ulsch_p(module_idP, frameP, subframeP);
} else {
LOG_E(MAC," %s %d: schedule_ulsch_p is NULL, function not called\n",
__FILE__,
__LINE__);
}
/* This schedules UCI_SR in subframeP */
schedule_SR(module_idP, frameP, subframeP);
/* This schedules UCI_CSI in subframeP */
schedule_CSI(module_idP, frameP, subframeP);
#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
/* This schedules DLSCH in subframeP for BR UE*/
schedule_ue_spec_br(module_idP, frameP, subframeP);
#endif
/* This schedules DLSCH in subframeP */
if (schedule_ue_spec_p != NULL) {
schedule_ue_spec_p(module_idP, frameP, subframeP, mbsfn_status);
} else {
LOG_E(MAC," %s %d: schedule_ue_spec_p is NULL, function not called\n",
__FILE__,
__LINE__);
}
} else {
schedule_ulsch_phy_test(module_idP,frameP,subframeP);
schedule_ue_spec_phy_test(module_idP,frameP,subframeP,mbsfn_status);
}
/* Allocate CCEs for good after scheduling is done */
for (CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) {
if (cc[CC_id].tdd_Config == NULL || !(is_UL_sf(&cc[CC_id],subframeP))) {
allocate_CCEs(module_idP, CC_id, frameP, subframeP, 2);
}
}
if (flexran_agent_get_mac_xface(module_idP) && subframeP == 9) {
flexran_agent_slice_update(module_idP);
}
stop_meas(&(eNB->eNB_scheduler));
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_DLSCH_ULSCH_SCHEDULER, VCD_FUNCTION_OUT);
}