Automatic Congestion Handling

BetterMing · Created Apr 20, 2020 00:47:55

Hello, Rassim.
Thank you for using our forum. What product of Huawei are you using? Can you give specific models? To facilitate me to give you the solution to the problem you need.

Since the resources of each cell are fixed, if the user service is too high and the PRB occupancy rate is too high, it is necessary to increase the cell resources and increase the service capacity of the cell. It cannot be optimized by modifying certain parameters.

Thanks!

BetterMing · Created Apr 20, 2020 00:47:55

Hello, Rassim.
Thank you for using our forum. What product of Huawei are you using? Can you give specific models? To facilitate me to give you the solution to the problem you need.

Since the resources of each cell are fixed, if the user service is too high and the PRB occupancy rate is too high, it is necessary to increase the cell resources and increase the service capacity of the cell. It cannot be optimized by modifying certain parameters.

Thanks!

BetterMing · Created Apr 20, 2020 02:07:17

More information for your reference:

MaxUpaUserNumDynAdjFactor

MO	UCELLCAC
Parameter ID	MaxUpaUserNumDynAdjFactor
Parameter Name	Dynamic Adjustment Factor for Max. HSUPA User
NE	BSC6900
MML Command	ADD UCELLCAC MOD UCELLCAC
Meaning	Factor for dynamically adjusting the maximum number of HSUPA users in a cell. The RNC determines the number of HSUPA users in a cell before admitting a new user. If the number of HSUPA users admitted to a cell is smaller than the rounded-down value of this parameter x "MaxHsupaUserNum", the RNC proceeds with the admission decision operation. Otherwise, the RNC rejects the admission requests of new HSUPA users. The value of this parameter is automatically adjusted when the Automatic Congestion Handler (ACH) algorithm is enabled, that is, the ADAP_CELL_CONGEST_SWITCH under the "AdapAlgoSwitch" parameter in the "ADD UCELLALGOSWITCH" command is set to on. This parameter is an advanced parameter and manual modification of the parameter value is not recommended. If you need to modify the value of this parameter, perform the modification with the assistance of Huawei technical support.
IsKey	NO
Mandatory	NO
Feature ID	WRFD-01061202 WRFD-010670 WRFD-020101 WRFD-010639 WRFD-01061211 WRFD-010634
Feature Name	HSUPA Admission Control 128 HSUPA Users per Cell Admission Control 96 HSUPA Users per Cell 20 HSUPA Users per Cell 60 HSUPA Users per Cell
Value Type	Interval Type
GUI Value Range	0~100
Enumeration Number/Bit	N/A
Unit	%
Actual Value Range	0~100
Default Value	100
Recommended Value	100
Initial Value Source	Radio Planning (Internal planning)
Impact	Cell
Parameter Relationship	None
Access	Read & Write
Service Interrupted After Modification	No (And no impact on the UE in idle mode)
Interruption Scope	N/A
Interruption Duration(Min)	N/A
Caution	None
Validation of Modification	The parameter modification has no impact on the equipment.
Impact on Radio Network Performance	If this parameter is set to a large value, more HSUPA users can be admitted to a cell. However, it is more easily for the cell to be congested in the uplink and satisfactory services cannot be ensured. If this parameter is set to a small value, new HSUPA users will easily be rejected due to the HSUPA user number limitation. In this case, some uplink power resources in the cell are left unused, which reduces the system capacity.
Introduced in Version	Versions earlier than BSC6900 V900R011
Attribute	Radio

I suggest you contact Huawei technical support: https://e.huawei.com/en/service-hotline-query

Thanks!

Rassim · Created Apr 20, 2020 05:56:51

The Below File as example

Rassim · Created Apr 20, 2020 06:07:06

Check the next due to formating issue

Rassim · Created Apr 20, 2020 06:14:50

May be this is more clear

Time	Site	Cell	RRC	RRC	Max	AVG	MAX	AVG	AVG	RRC	Call	DL	UL	E_RAB	UL	DL
			Active	AVG	UE	Throupt	Throupt	PRB	PRB	Succ	Drop	VLM	VLM	Succ	Interfer	PWR
			UE	UE				DL	UL	Rate		GB	GB	Rate		AVG
00:00	Site123	Site123_1	15	68	88	29	57	99.305	35.993	100	0.244	13	2	100	-113	45.9
01:00	Site123	Site123_1	13	60	80	30	78	98.884	32.146	100	0.124	13	1	100	-113	45.9
02:00	Site123	Site123_1	9	51	71	32	83	95.968	37.447	99.959	0.123	13	2	100	-113	45.8
03:00	Site123	Site123_1	7	43	61	34	107	82.545	32.908	99.961	0.04	13	1	100	-114	45.2
04:00	Site123	Site123_1	5	36	53	23	62	50.61	31.709	99.96	0.041	7	1	99.961	-115	43.8
05:00	Site123	Site123_1	3	32	48	21	48	36.58	20.224	100	0	5	1	100	-116	43.1
06:00	Site123	Site123_1	2	26	40	21	57	23.425	14.411	100	0	4	0	100	-116	42.4
07:00	Site123	Site123_1	2	24	39	22	48	19.538	13.457	100	0.071	3	1	100	-117	42.2
08:00	Site123	Site123_1	2	27	45	25	83	60.59	15.325	100	0.077	7	1	100	-115	44.1
09:00	Site123	Site123_1	4	35	53	36	123	73.97	19.487	99.966	0.172	12	1	100	-114	44.8
10:00	Site123	Site123_1	4	46	69	23	72	68.57	22.997	99.94	0.154	8	1	100	-113	44.4
11:00	Site123	Site123_1	7	51	70	26	59	88.249	29.664	100	0.297	10	1	100	-112	45.4
12:00	Site123	Site123_1	8	55	78	28	63	94.025	29.439	100	0.243	11	1	99.97	-112	45.7
13:00	Site123	Site123_1	9	60	86	28	70	94.704	30.368	100	0.458	11	1	100	-112	45.7
14:00	Site123	Site123_1	9	63	84	26	58	94.84	37.359	100	0.361	11	1	100	-112	45.7
15:00	Site123	Site123_1	9	60	85	27	78	96.154	38.411	99.971	0.369	11	2	100	-111	45.8
16:00	Site123	Site123_1	10	64	85	25	60	97.243	36.167	100	0.276	10	1	99.945	-111	45.8
17:00	Site123	Site123_1	8	60	89	22	53	87.106	40.862	99.973	0.235	9	2	99.947	-111	45.4
18:00	Site123	Site123_1	9	65	93	26	58	90.039	35.231	99.975	0.375	11	1	100	-111	45.5
19:00	Site123	Site123_1	11	67	91	27	62	96.649	33.734	99.973	0.401	11	1	100	-112	45.8
20:00	Site123	Site123_1	14	73	100	25	55	98.679	44.899	100	0.318	11	2	99.948	-112	45.9
21:00	Site123	Site123_1	16	77	111	26	50	99.102	47.376	99.972	0.515	11	2	99.972	-112	45.9
22:00	Site123	Site123_1	15	78	103	24	44	98.942	46.414	100	0.202	10	2	100	-112	45.8
23:00	Site123	Site123_1	16	76	106	26	52	99.036	42.271	100	0.332	11	2	99.91	-112	45.9

BetterMing · Created Apr 23, 2020 08:48:36

Hello, Rassim.
The eNodeB monitors the PRB usage and QoS satisfaction rate of GBR services to determine the cell load. Based on the monitoring results, the eNodeB determines whether to admit or reject GBR services or release low-priority services, affecting the access and rate of low-priority services. When resources are insufficient and congestion occurs, the eNodeB takes a series of control measures based on QoS class identifiers (QCIs) and allocation/retention priorities (ARPs) to relieve congestion and reallocate radio resources. This increases the access success rate of UEs, especially high-priority UEs, and enables UEs with different priorities to use radio resources properly.
As shown in the table above, the usage rate of PRB is close to 100%. You can reduce cell power or increase capacity.
Thanks!

Rassim · Created Apr 29, 2020 09:26:51

Thanks @BetterMing, Actually I tried again and worked but I am not sure about full functionality.

I applied multiple parameter changes and I got good results, I may share it with you once confirm everything.

Thanks

Automatic Congestion Handling

Recommended answer

MaxUpaUserNumDynAdjFactor

Third Party’s Trade Secret

My Followers

Enterprise

Consumer

Corporate

Carriers

Automatic Congestion Handling

Recommended answer

MaxUpaUserNumDynAdjFactor

Third Party’s Trade Secret

My Followers