Download Capacity Monitoring Guide PDF

TitleCapacity Monitoring Guide
Tags Digital & Social Media Digital Technology High Speed Packet Access Data Transmission
File Size790.5 KB
Total Pages43
Table of Contents
                            About This Document
Contents
1 Network Resource Monitoring Methods
	1.1 Network Resource Introduction
	1.2 Resource Monitoring Procedure
2 Network Resource Counters
	2.1 Uplink Load
	2.2 Downlink Load
	2.3 CE Usage
	2.4 OVSF Code Usage
	2.5 Iub Bandwidth
	2.6 SPU CPU Load
	2.7 DPU DSP Load
	2.8 Interface Board CPU Load
	2.9 Common Channels
	2.10 NodeB CPU Load
	2.11 WMPT CNBAP Load
3 HSPA Related Resources
	3.1 HSDPA
		3.1.1 Power Resources
		3.1.2 Code Resources
	3.2 HSUPA
		3.2.1 CE Resources
		3.2.2 RTWP
4 Diagnosis of Problems Related to Network Resources
	4.1 Call Blocks in the Basic Call Flow
	4.2 Call Congestion Counters
		4.2.1 Performance Counters Associated with Paging Loss
		4.2.2 Performance Counters Associated with RRC Congestion Rates
		4.2.3 Performance Counters Associated with RAB Congestion Rates
	4.3 Signaling Storms and Solutions
	4.4 Resource Analysis
		4.4.2 CE Resource Consumption Analysis
		4.4.3 Code Resource Usage Analysis
		4.4.4 Iub Resource Analysis
		4.4.5 Power Resource Analysis
		4.4.6 SPU CPU Usage Analysis
		4.4.7 DPU DSP and Interface Board CPU Usage Analysis
		4.4.8 PCH Usage Analysis
		4.4.9 FACH Usage Analysis
5 Counter Definitions
                        
Document Text Contents
Page 1

RAN14.0

Capacity Monitoring Guide



Issue Draft A

Date 2012-02-15



HUAWEI TECHNOLOGIES CO., LTD.

Page 2

Issue Draft A (2012-02-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.

i



Copyright © Huawei Technologies Co., Ltd. 2012. All rights reserved.

No part of this document may be reproduced or transmitted in any form or by any means without prior
written consent of Huawei Technologies Co., Ltd.



Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.

All other trademarks and trade names mentioned in this document are the property of their respective
holders.



Notice

The purchased products, services and features are stipulated by the contract made between Huawei and
the customer. All or part of the products, services and features described in this document may not be
within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements,
information, and recommendations in this document are provided "AS IS" without warranties, guarantees or
representations of any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in the
preparation of this document to ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute a warranty of any kind, express or implied.













Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base

Bantian, Longgang

Shenzhen 518129

People's Republic of China

Website: http://www.huawei.com

Email: [email protected]







http://www.huawei.com/
mailto:[email protected]

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Capacity Monitoring Guide 3 HSPA Related Resources



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15





Power for CCH: This portion of power is allocated to common transport channels (CCHs) of
the cell such as the broadcast channel, pilot channel, and paging channel.

Power margin: This portion of power is not allocated. The power margin is reserved to ensure
that the system can remain stable even if the UE position or environment changes.

Power for DPCH: This portion of power is allocated to real-time services (voice and video
calls) and PS R99 services, and varies with the number and locations of users. RNCs and UEs
can adjust power for DPCH based on the power control algorithm.

Power for HSPA: This portion of power is allocated to HSDPA and is calculated as follows:

HSDPA user power = Maximum cell transmit power – (Power for CCH + Power margin +
Power for DPCH)

HSPA power schedulers are designed primarily to make the most of available power.

In an HSDPA-enabled cell, TCP is still monitored to see if the system is overloaded in the
downlink. TCP thresholds for this cell are the same as those for a cell without HSDPA. With
HSDPA, downlink power overload affects HSDPA performance before it affects
conversational services.

3.1.2 Code Resources
HSDPA can share code resources with real-time services. The system can dynamically
reallocate OVSF codes to HSDPA services and real-time services based on OVSF code
allocation settings (such as the number of codes reserved only for HSDPA and the number of
codes that can be shared). These settings can be changed online based on the network plan.

When HSDPA is enabled, OVSF code resources are monitored the same way as when HSDPA
is not enabled. Note that a high OVSF usage can be reduced by adjusting OVSF code
allocation settings (such as the number of codes reserved only for HSDPA and the number of
codes that can be shared).

Figure 3-2 OVSF code sharing

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3.2 HSUPA
3.2.1 CE Resources

HSUPA channels are dedicated channels, and resource consumption of HUSPA services is
measured by CE. UL CEs are shared between R99 services and HSUPA services.

HSUPA improves user experience and uplink throughput, but also consumes more uplink CE
overhead for hybrid automatic repeat requests (HARQ) and soft handovers. This means that
uplink CE resources may become a system bottleneck. Therefore, uplink CE usage needs to
be monitored when HSUPA is enabled.

Huawei NodeBs support dynamic HSUPA CE management.

3.2.2 RTWP
Similar to HSDPA, which is designed to make the most of the downlink power, HSUPA is
designed to make the most of uplink capacity margin. HSUPA is always authorized to send
data until the RTWP rises to 6 dBm.

HSUPA provision increases uplink data throughput but also consumes a large amount of
uplink RTWP, which is monitored in the same way regardless of whether HSUPA is
provisioned. If RTWP overload occurs, rates of HSUPA services must be lowered to ensure
QoS of conversational services.

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Capacity Monitoring Guide 5 Counter Definitions



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Copyright © Huawei Technologies Co., Ltd.

36



Counter Name Counter Definition

PCH/FACH
Usage Counter



PCH usage VS.UTRAN.AttPaging1 VS.UTRAN.AttPaging1/(60*60*5/0.01)

FACH usage VS.CRNCIubBytesFACH.Tx
VS.PCH.Bandwidth.UsageRate

(1) Utilization of FACH carried on
non-standalone SCCPCH
FACH Utility Ratio =
VS.CRNCIubBytesFACH.Tx x 8/((60 x <SP> x
168 x 1/0.01) x VS.PCH.Bandwidth.UsageRate x
6/7 + (60 x <SP> x 360 x 1/0.01) x (1-
VS.PCH.Bandwidth.UsageRate x 6/7))
(2) Utilization of FACH carried on standalone
SCCPCH
FACH Utility Ratio =
VS.CRNCIubBytesFACH.Tx x 8/(60 x <SP> x
360 x 1/0.01)

OVSF Usage
Counter



OVSF usage VS.RAB.SFOccupy VS.RAB.SFOccupy

OVSF usability
ratio

VS.RAB.SFOccupy.Ratio VS.RAB.SFOccupy/256

DCH OVSF ratio DCH_OVSF_Utilization [(<VS.SingleRAB.SF4> + <VS.MultRAB.SF4>)
x 64 + (<VS.MultRAB.SF8> +
<VS.SingleRAB.SF8>) x 32 +
(<VS.MultRAB.SF16> +
<VS.SingleRAB.SF16>) x 16 +
(<VS.SingleRAB.SF32> +
<VS.MultRAB.SF32>) x 8 +
(<VS.MultRAB.SF64> +
<VS.SingleRAB.SF64>) x 4 +
(<VS.SingleRAB.SF128> +
<VS.MultRAB.SF128>) x 2 +
(<VS.SingleRAB.SF256> +
<VS.MultRAB.SF256>)]/256

CPU Usage
Counter



SPU usage VS.XPU.CPULOAD.MEAN VS.XPU.CPULOAD.MEAN

DPU usage VS.DSP.UsageAvg VS.DSP.UsageAvg

INT usage VS.INT.CPULOAD.MEAN
VS.INT.TRANSLOAD.RATIO.MEA
N

VS.INT.CPULOAD.MEAN
VS.INT.TRANSLOAD.RATIO.MEAN

NodeB CPU
usage

VS.BRD.CPULOAD.MEAN VS.BRD.CPULOAD.MEAN

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37



Counter Name Counter Definition

Credit Usage
Counter



UL_CE_MEAN
_RATIO

VS.LC.ULMean.LicenseGroup
VS.LC.ULMean.LicenseGroup.Shared
VS.LC.ULCreditAvailable.LicenseGro
up.Dedicated
VS.LC.ULCreditAvailable.Shared
VS.LC.ULMax.LicenseGroup
VS.LC.ULMax.LicenseGroup.Shared
VS.LC.ULMax.LicenseGroup
VS.LC.ULMax.LicenseGroup.Shared

(VS.LC.ULMean.LicenseGroup +
VS.LC.ULMean.LicenseGroup.Shared)/(VS.LC.
ULCreditAvailable.LicenseGroup.Dedicated +
VS.LC.ULCreditAvailable.Shared) UL_CE_MEAN

_REMAIN
VS.LC.ULCreditAvailable.LicenseGroup.Dedica
ted + VS.LC.ULCreditAvailable.Shared -
VS.LC.ULMean.LicenseGroup -
VS.LC.ULMean.LicenseGroup.Shared

UL_CE_MAX_
RATIO

UL_CE_MAX_
REMAIN (VS.LC.ULMax.LicenseGroup +

VS.LC.ULMax.LicenseGroup.Shared)/(VS.LC.U
LCreditAvailable.LicenseGroup.Dedicated +
VS.LC.ULCreditAvailable.Shared)

VS.LC.ULCreditAvailable.LicenseGroup.Dedica
ted + VS.LC.ULCreditAvailable.Shared -
VS.LC.ULMax.LicenseGroup -
VS.LC.ULMax.LicenseGroup.Shared

DL_CE_MEAN VS.LC.DLMean.LicenseGroup
VS.LC.DLMean.LicenseGroup.Shared
VS.LC.DLCreditAvailable.LicenseGro
up.Dedicated
VS.LC.DLCreditAvailable.Shared
VS.LC.DLMax.LicenseGroup
VS.LC.DLMax.LicenseGroup.Shared
VS.LC.DLMax.LicenseGroup
VS.LC.DLMax.LicenseGroup.Shared
VS.CE.ULMean.UlGroup
VS.CE.ULAvailable.UlGroup

(VS.LC.DLMean.LicenseGroup +
VS.LC.DLMean.LicenseGroup.Shared)/(VS.LC.
DLCreditAvailable.LicenseGroup.Dedicated +
VS.LC.DLCreditAvailable.Shared)

DL_CE_MEAN
_REMAIN

VS.LC.ULCreditAvailable.LicenseGroup.Dedica
ted + VS.LC.ULCreditAvailable.Shared -
VS.LC.ULMean.LicenseGroup -
VS.LC.ULMean.LicenseGroup.Shared

DL_CE_MAX_
RATIO

DL_CE_MAX_
REMAIN (VS.LC.DLMax.LicenseGroup +

VS.LC.DLMax.LicenseGroup.Shared)/(VS.LC.D
LCreditAvailable.LicenseGroup.Dedicated +
VS.LC.DLCreditAvailable.Shared)

ULGROUP_CE_
MEAN_Ratio

VS.LC.DLCreditAvailable.LicenseGroup.Dedica
ted + VS.LC.DLCreditAvailable.Shared -
VS.LC.DLMax.LicenseGroup -
VS.LC.DLMax.LicenseGroup.Shared

VS.CE.ULMean.UlGroup/VS.CE.ULAvailable.
UlGroup

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