TIMERS T305 & T308Slide title 70 pt CAPITALS Slide subtitle minimum 30 pt
TRAFFIC 900/1800: Global RESULTS
The main objectives were:
First correct the template settings as they were not in line with what we expected (misunderstanding on 900/1800 capture parameters)
The key parameters were :
MINOFFSET for the BASIC Ranking criteria
HOTHRES = 25 for DCS1800 & HOTHRES = 35 for GSM900 NOT ALLOWED TO MODIFY for INTERLAYER HO criteria
INTELEVHOHYST for the capture 900 to 1800 (INTERLAYER HO criteria)
DLEDGETHRES & ULEDGETHRES for the rescue 1800 to 900 and to be set properly to avoid ping pong between both layers
Then improve the network performance by pushing more traffic to the 1800 MHz layer (which has a much better RxQual) in order to relieve the 900 MHz frequency band
OBJECTIVE
TIMERS T305 & T308 | Ericsson Internal | 2014-06-18 | Page *
A first CR 312518 was implemented on the whole network in 30/10/2014 : Alignment of dual band parameters 2G at -86 dBm for AX/RU/SB environment and - 76 dBm for DU/U environment in order to apply new M* strategy.
Then a second CR 318395 was implemented in 07/01/2015:
Finetuning of dualband parameters 2G from -76 dBm to -86 dBm to push more traffic on 1800 layer mainly on DU/U environment
Additional neighbors between 1800-900 were identified and added taking into account a rescue from 1800 to 900 at -94dBm
Planning & Implementation
See graphs in the excel file in attachment
Main observations:
As expected we push more traffic on 1800 layer which is the frequency band less interfered
TCH Dropped call rate was improved globally but difficult to evalue the gain properly because the traffic in January 2015 is not back to the traffic of December 2014
For DU environment from 0.45% to 0.42%
For RU environment from 0.53% to 0.50%
OSS KPI ReSULTS
TIMERS T305 & T308
Sum of Incoming Inter RAT HO Successful
Sum of CM33:Call Drops on Traffic Channel
Sum of TCH Traffic [Erl](Erl)
01/05/2015
8725054
3293914
60433
499946.8853
09/29/2014
10183623
3509538
79077
519219.039
10/06/2014
9912709
3470120
77474
517574.5236
10/13/2014
9984839
3475063
78700
516083.8025
10/20/2014
9714834
3433261
75840
517795.6416
10/27/2014
9460708
3317179
72828
486557.0968
11/03/2014
9821434
3435157
76218
516171.4775
11/10/2014
8846661
3122698
63314
466839.566
11/17/2014
9451353
3349355
72825
516680.0382
11/24/2014
9495600
3382236
72645
516149.9603
12/01/2014
9588575
3408986
71034
516622.8592
12/08/2014
9711830
3490423
73467
523498.0809
12/15/2014
9761170
3581156
75105
525129.0307
12/22/2014
7657914
2784876
46608
399300.262
12/29/2014
7548132
2734817
44935
397803.837
TCH Drop Call Rate [%] (Ntwk+InterRat)(%)
TCH Traffic [Erl](Erl)
CM330:Call Drops on Radio Interface in Stable State (Traffic Channel)
CM331:Call Drops on Radio Interface in Handover State (Traffic Channel)
CM33:Call Drops on Traffic Channel
09/29/2014
Dual_Optim_G18_AX_RU_SB
100%
140112
62363
1.3962
42614.9069
1974
715
2827
09/29/2014
Dual_Optim_G18_DU_U
100%
990034
187584
1.1071
175013.4052
10184
2143
13037
09/29/2014
Dual_Optim_G9_AX_RU_SB
100%
10043511
3447175
0.5652
476604.1321
57861
16410
76250
09/29/2014
Dual_Optim_G9_DU_U
100%
22668794
5262099
0.4404
878838.0772
94226
26361
122997
09/29/2014
Dual_Optim_G9_FineTuned_76_to_86
99%
5215847
1320722
0.3694
170938.5893
18413
5282
24147
09/29/2014
Dual_Optim_G18_FineTuned_76_to_86
99%
382843
94382
1.0794
91386.4224
3984
939
5151
10/06/2014
Dual_Optim_G18_AX_RU_SB
100%
131963
59041
1.378
41852.2293
1882
619
2632
10/06/2014
Dual_Optim_G18_DU_U
100%
925421
181076
1.0832
168085.0168
9750
2015
11986
10/06/2014
Dual_Optim_G9_AX_RU_SB
99%
9780746
3411079
0.5673
475722.2943
57599
15930
74842
10/06/2014
Dual_Optim_G9_DU_U
100%
21633926
5174000
0.437
865016.4098
90839
24292
117144
10/06/2014
Dual_Optim_G9_FineTuned_76_to_86
100%
4999665
1302307
0.3801
169209.6738
18707
4782
23956
10/06/2014
Dual_Optim_G18_FineTuned_76_to_86
100%
355152
89743
1.1059
87966.7138
3847
941
4920
10/13/2014
Dual_Optim_G18_AX_RU_SB
99%
138768
60659
1.405
43049.5999
1948
625
2802
10/13/2014
Dual_Optim_G18_DU_U
99%
924890
178015
1.1433
166758.5365
10218
2033
12609
10/13/2014
Dual_Optim_G9_AX_RU_SB
99%
9846071
3414404
0.5724
473034.2026
58474
15841
75898
10/13/2014
Dual_Optim_G9_DU_U
99%
21341677
5084109
0.4392
852000.8291
92004
22548
116054
10/13/2014
Dual_Optim_G9_FineTuned_76_to_86
99%
4940375
1276426
0.3911
166182.1557
19352
4430
24314
10/13/2014
Dual_Optim_G18_FineTuned_76_to_86
99%
356292
89808
1.1836
88465.8207
4075
939
5280
10/20/2014
Dual_Optim_G18_AX_RU_SB
100%
130020
59381
1.3865
42784.9314
1951
571
2626
10/20/2014
Dual_Optim_G18_DU_U
100%
891976
174169
1.1074
165328.4116
9517
1960
11807
10/20/2014
Dual_Optim_G9_AX_RU_SB
100%
9584814
3373880
0.565
475010.7102
57210
15121
73214
10/20/2014
Dual_Optim_G9_DU_U
100%
21158570
5090010
0.4386
865069.4148
90755
22925
115116
10/20/2014
Dual_Optim_G9_FineTuned_76_to_86
100%
4849341
1263448
0.3705
167598.496
18001
4396
22645
10/20/2014
Dual_Optim_G18_FineTuned_76_to_86
100%
341453
86523
1.1227
87485.4074
3775
881
4805
10/27/2014
Dual_Optim_G18_AX_RU_SB
100%
149246
59335
1.6373
48404.5454
2576
755
3415
10/27/2014
Dual_Optim_G18_DU_U
99%
907400
162964
0.9889
152073.0285
8647
1649
10585
10/27/2014
Dual_Optim_G9_AX_RU_SB
100%
9311462
3257844
0.5522
438152.5514
54075
14078
69413
10/27/2014
Dual_Optim_G9_DU_U
100%
20676237
4796277
0.4222
822988.6083
85921
20405
107557
10/27/2014
Dual_Optim_G9_FineTuned_76_to_86
100%
4728449
1188283
0.3659
162840.5947
17302
4003
21648
10/27/2014
Dual_Optim_G18_FineTuned_76_to_86
99%
335852
81513
1.0171
76889.9609
3310
764
4245
11/03/2014
Dual_Optim_G18_AX_RU_SB
100%
168173
59829
1.7219
58236.0277
2746
990
3926
11/03/2014
Dual_Optim_G18_DU_U
99%
994373
175967
0.8175
152929.3686
7750
1474
9568
11/03/2014
Dual_Optim_G9_AX_RU_SB
100%
9653261
3375328
0.5549
457935.4498
55332
14793
72292
11/03/2014
Dual_Optim_G9_DU_U
100%
22477354
5143772
0.4204
876363.8702
91213
22616
116130
11/03/2014
Dual_Optim_G9_FineTuned_76_to_86
100%
5121892
1288499
0.3627
177397.5364
18212
4539
23253
11/03/2014
Dual_Optim_G18_FineTuned_76_to_86
100%
354655
88311
0.8188
76738.2004
2837
576
3627
11/10/2014
Dual_Optim_G18_AX_RU_SB
98%
143930
54434
1.4917
51392.0306
2154
713
2959
11/10/2014
Dual_Optim_G18_DU_U
99%
844993
156982
0.8819
142039.2559
7380
1274
8836
11/10/2014
Dual_Optim_G9_AX_RU_SB
100%
8702731
3068264
0.5127
415447.5354
47842
11979
60355
11/10/2014
Dual_Optim_G9_DU_U
100%
20078166
4659534
0.4116
815673.7922
81145
19037
101810
11/10/2014
Dual_Optim_G9_FineTuned_76_to_86
100%
4600597
1169825
0.3485
164679.6546
16170
3710
20110
11/10/2014
Dual_Optim_G18_FineTuned_76_to_86
99%
303727
80571
0.8236
70246.7228
2571
498
3165
11/17/2014
Dual_Optim_G18_AX_RU_SB
100%
158685
57546
1.7366
59380.4726
2595
1055
3755
11/17/2014
Dual_Optim_G18_DU_U
100%
866522
166517
1.0387
154979.8951
8835
1721
10730
11/17/2014
Dual_Optim_G9_AX_RU_SB
100%
9292668
3291809
0.5489
457299.5656
53897
14383
69070
11/17/2014
Dual_Optim_G9_DU_U
99%
20869882
4985853
0.4282
871847.9145
87695
21788
110712
11/17/2014
Dual_Optim_G9_FineTuned_76_to_86
100%
4803092
1248803
0.3628
175538.6747
17541
4096
21959
11/17/2014
Dual_Optim_G18_FineTuned_76_to_86
100%
323919
84428
0.9764
78952.8636
3178
699
3987
11/24/2014
Dual_Optim_G18_AX_RU_SB
100%
156187
58187
1.7227
59122.9159
2595
978
3693
11/24/2014
Dual_Optim_G18_DU_U
99%
877943
172001
0.964
157170.2428
8183
1612
10121
11/24/2014
Dual_Optim_G9_AX_RU_SB
100%
9339413
3324049
0.5445
457027.0444
53773
14292
68952
11/24/2014
Dual_Optim_G9_DU_U
100%
21181838
5079032
0.4269
875993.5415
88012
21971
112106
11/24/2014
Dual_Optim_G9_FineTuned_76_to_86
100%
4920322
1277161
0.3692
176691.5391
18091
4311
22884
11/24/2014
Dual_Optim_G18_FineTuned_76_to_86
100%
331910
87502
0.9265
81274.1467
3076
681
3886
12/01/2014
Dual_Optim_G18_AX_RU_SB
100%
154351
59163
1.6528
59191.4026
2551
921
3529
12/01/2014
Dual_Optim_G18_DU_U
100%
864543
176298
0.941
156125.4403
8053
1496
9794
12/01/2014
Dual_Optim_G9_AX_RU_SB
100%
9434224
3349823
0.528
457431.4566
52683
13920
67505
12/01/2014
Dual_Optim_G9_DU_U
99%
21508687
5162794
0.4206
880428.2181
88118
22412
112176
12/01/2014
Dual_Optim_G9_FineTuned_76_to_86
100%
4984637
1318932
0.3554
177995.3964
17786
4181
22406
12/01/2014
Dual_Optim_G18_FineTuned_76_to_86
100%
332740
90207
0.9228
81129.1801
3110
631
3903
12/08/2014
Dual_Optim_G18_AX_RU_SB
100%
154590
59907
1.6294
59206.3322
2482
896
3495
12/08/2014
Dual_Optim_G18_DU_U
99%
851117
186618
0.9244
156195.9327
7934
1456
9593
12/08/2014
Dual_Optim_G9_AX_RU_SB
99%
9557240
3430516
0.5388
464291.7487
54601
14549
69972
12/08/2014
Dual_Optim_G9_DU_U
100%
21486042
5280972
0.4208
886119.5085
88999
21561
112623
12/08/2014
Dual_Optim_G9_FineTuned_76_to_86
100%
4985592
1355970
0.3504
180515.9833
17627
4418
22220
12/08/2014
Dual_Optim_G18_FineTuned_76_to_86
100%
327600
94648
0.9272
81045.9334
3143
679
3915
12/15/2014
Dual_Optim_G18_AX_RU_SB
96%
151139
62587
1.5295
56793.6348
2294
687
3269
12/15/2014
Dual_Optim_G18_DU_U
98%
856119
187578
0.9756
151382.2289
7644
1266
10182
12/15/2014
Dual_Optim_G9_AX_RU_SB
100%
9610031
3518569
0.5472
468335.3959
55788
14369
71836
12/15/2014
Dual_Optim_G9_DU_U
99%
21511804
5373666
0.4272
887138.2499
88328
20618
114850
12/15/2014
Dual_Optim_G9_FineTuned_76_to_86
100%
4991261
1373615
0.3882
181513.7241
17949
4434
24710
12/15/2014
Dual_Optim_G18_FineTuned_76_to_86
99%
326627
97368
1.0118
79036.3248
3069
554
4290
12/22/2014
Dual_Optim_G18_AX_RU_SB
100%
115177
48638
1.2276
41282.4824
1515
416
2011
12/22/2014
Dual_Optim_G18_DU_U
100%
687003
140458
0.8249
117326.3012
5777
814
6826
12/22/2014
Dual_Optim_G9_AX_RU_SB
100%
7542737
2736238
0.4339
358017.7796
36088
7883
44597
12/22/2014
Dual_Optim_G9_DU_U
99%
17673520
4143882
0.3584
710114.3499
63328
12863
78191
12/22/2014
Dual_Optim_G9_FineTuned_76_to_86
100%
4090549
1066971
0.3187
146657.4329
12906
2664
16436
12/22/2014
Dual_Optim_G18_FineTuned_76_to_86
100%
258650
75094
0.8653
60112.6943
2327
375
2888
12/29/2014
Dual_Optim_G18_AX_RU_SB
100%
114031
48325
1.1721
41415.06
1471
397
1903
12/29/2014
Dual_Optim_G18_DU_U
100%
718270
143894
0.8111
120148.7445
5934
844
6993
12/29/2014
Dual_Optim_G9_AX_RU_SB
99%
7434101
2686492
0.4252
356388.777
35551
7183
43032
12/29/2014
Dual_Optim_G9_DU_U
99%
17983596
4130142
0.3426
717361.8301
62028
12035
75769
12/29/2014
Dual_Optim_G9_FineTuned_76_to_86
100%
4156893
1069805
0.296
149158.803
12697
2363
15471
12/29/2014
Dual_Optim_G18_FineTuned_76_to_86
100%
270316
76529
0.8482
61365.9849
2348
397
2942
01/05/2015
Dual_Optim_G18_AX_RU_SB
100%
135876
58801
1.4141
54199.5953
2059
609
2753
01/05/2015
Dual_Optim_G18_DU_U
100%
812880
168056
1.0181
174468.6737
8329
1367
9987
01/05/2015
Dual_Optim_G9_AX_RU_SB
100%
8589178
3235113
0.4878
445747.29
45460
11386
57680
01/05/2015
Dual_Optim_G9_DU_U
100%
19333513
4904538
0.3991
821371.5635
77543
17250
96733
01/05/2015
Dual_Optim_G9_FineTuned_76_to_86
100%
4446264
1253892
0.319
147612.8693
14584
3324
18182
01/05/2015
Dual_Optim_G18_FineTuned_76_to_86
100%
356116
88004
1.1191
106321.7436
4044
761
4970
Dual_Optim_Finetuned_CR318395
Time
Sum of Incoming Inter RAT HO Successful
Sum of CM33:Call Drops on Traffic Channel
Sum of TCH Traffic [Erl](Erl)
TCH Drop Call Rate [%] (Ntwk+InterRat)(%)
09/29/2014
5598690
1415104
29298
262325.0117
0.42%
10/06/2014
5354817
1392050
28876
257176.3876
0.43%
10/13/2014
5296667
1366234
29594
254647.9764
0.44%
10/20/2014
5190794
1349971
27450
255083.9034
0.42%
10/27/2014
5064301
1269796
25893
239730.5556
0.41%
11/03/2014
5476547
1376810
26880
254135.7368
0.39%
11/10/2014
4904324
1250396
23275
234926.3774
0.38%
11/17/2014
5127011
1333231
25946
254491.5383
0.40%
11/24/2014
5252232
1364663
26770
257965.6858
0.40%
12/01/2014
5317377
1409139
26309
259124.5765
0.39%
12/08/2014
5313192
1450618
26135
261561.9167
0.39%
12/15/2014
5317888
1470983
29000
260550.0489
0.43%
12/22/2014
4349199
1142065
19324
206770.1272
0.35%
12/29/2014
4427209
1146334
18413
210524.7879
0.33%
01/05/2015
4802380
1341896
23152
253934.6129
0.38%
Dual_Optim_RU_CR312518
Time
Sum of Incoming Inter RAT HO Successful
Sum of CM33:Call Drops on Traffic Channel
Sum of TCH Traffic [Erl](Erl)
TCH Drop Call Rate [%] (Ntwk+InterRat)(%)
09/29/2014
10183623
3509538
79077
519219.039
0.58%
10/06/2014
9912709
3470120
77474
517574.5236
0.58%
10/13/2014
9984839
3475063
78700
516083.8025
0.58%
10/20/2014
9714834
3433261
75840
517795.6416
0.58%
10/27/2014
9460708
3317179
72828
486557.0968
0.57%
11/03/2014
9821434
3435157
76218
516171.4775
0.57%
11/10/2014
8846661
3122698
63314
466839.566
0.53%
11/17/2014
9451353
3349355
72825
516680.0382
0.57%
11/24/2014
9495600
3382236
72645
516149.9603
0.56%
12/01/2014
9588575
3408986
71034
516622.8592
0.55%
12/08/2014
9711830
3490423
73467
523498.0809
0.56%
12/15/2014
9761170
3581156
75105
525129.0307
0.56%
12/22/2014
7657914
2784876
46608
399300.262
0.45%
12/29/2014
7548132
2734817
44935
397803.837
0.44%
01/05/2015
8725054
3293914
60433
499946.8853
0.50%
Dual_Optim_DU_CR312518
Time
Sum of Incoming Inter RAT HO Successful
Sum of CM33:Call Drops on Traffic Channel
Sum of TCH Traffic [Erl](Erl)
TCH Drop Call Rate [%] (Ntwk+InterRat)(%)
09/29/2014
23658828
5449683
136034
1053851.4824
0.47%
10/06/2014
22559347
5355076
129130
1033101.4266
0.46%
10/13/2014
22266567
5262124
128663
1018759.3656
0.47%
10/20/2014
22050546
5264179
126923
1030397.8264
0.46%
10/27/2014
21583637
4959241
118142
975061.6368
0.45%
11/03/2014
23471727
5319739
125698
1029293.2388
0.44%
11/10/2014
20923159
4816516
110646
957713.0481
0.43%
11/17/2014
21736404
5152370
121442
1026827.8096
0.45%
11/24/2014
22059781
5251033
122227
1033163.7843
0.45%
12/01/2014
22373230
5339092
121970
1036553.6584
0.44%
12/08/2014
22337159
5467590
122216
1042315.4412
0.44%
12/15/2014
22367923
5561244
125032
1038520.4788
0.45%
12/22/2014
18360523
4284340
85017
827440.6511
0.38%
12/29/2014
18701866
4274036
82762
837510.5746
0.36%
01/05/2015
20146393
5072594
106720
995840.2372
0.42%
Slide title 44 pt Text and bullet level 1 minimum 24 pt Bullets level 2-5 minimum 20 pt Characters for Embedded font: !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~¡¢£¤¥¦§¨©ª«¬®¯°±²³´¶·¸¹º»¼½ÀÁÂÃÄÅÆÇÈËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿŒœŠšŸƒˆ˜–—‘’‚“”„†‡•…‰‹›⁄€™−≤≥ ΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨαβγδεζηθικλνξορςΣΤΥΦΧΨΩ Do not add objects or text in the footer area
TIMERS T305 & T308 | Ericsson Internal | 2014-06-18 | Page *
With that new traffic 900/1800 settings we have clearly a good traffic balancing between both layers with a gain observed in terms of TCH dropped call rate
Conclusions