The document describes the capabilities of Huawei's DTA Rule Library for analyzing 5G network issues from diagnostic test (DT) data. It includes modules for: 1. Analyzing 5G access, handover, and service retention issues to improve camping ratios. 2. Locating diagnostic exceptions based on event and call drop data to identify problems and provide optimization suggestions. 3. Analyzing neighboring cell and coverage issues to resolve handover and quality problems. 4. Identifying low throughput road sections, analyzing causes, and providing solutions to improve downlink throughput.

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Introduction to DTA Rule Library Capabilities
Functional
Module
Description
Networking
Supported
5G online
analysis
Analyzes the causes of 5G problems in NSA scenarios (ratio of NR SCG link seizure duration to total test
duration); analyzes 5G access, 4G/5G handover, and 5G service retention layer by layer; provides analysis
results to improve the 5G camping ratio. When the B1 event is reported but no SCG is added, the SCG is
deleted during the LTE handover, and the A3 event is reported but no handover occurs in the NR scenario,
provides specific optimization suggestions, such as those on incorrectly configured neighboring cells, X2 links,
PCIs, and anchoring parameters.
NSA
Event analysis
Locates DT exceptions based on the DT rule library and access, handover, and call drop events, generates
locating results, and improves KPIs. Based on abnormality rules, provides specific optimization suggestions for
neighboring cell and X2 optimization, and provides auxiliary optimization suggestions for poor quality and
interference over air interfaces.
NSASA
SA neighboring
cell optimization
Analyzes the following problems in SA scenarios: 5G-5G neighboring cell handover, 5G-4G neighboring cell
handover, PCI confusion, and PCI confusion after neighboring cells are added.
SA
Coverage
analysis
Analyzes problems, such as weak coverage and poor quality, during cluster optimization. It is a basic analysis
module for cluster optimization to handle coverage problems based on alarms, configuration, and planning and
construction information. In addition, the module can use the capabilities, such as ACP, to provide optimization
suggestions, for example, RF adjustment.
NSASA
Low throughput
analysis
This module can automatically identify the road sections with a low downlink throughput on the test route,
locate problems based on the DT rule library, and generate the locating result. This helps engineers formulate
the DT downlink throughput optimization solution and improve the 5G DT throughput. Auxiliary optimization
suggestions are provided based on the five factors that affect the throughput. Specific suggestions are
provided for low throughput problems caused by handovers.
NSASA
SA voice
analysis
For the voice solution in the SA EPS FB scenario, provides the following functions: EPS FB delay analysis,
event determination, and FR delay analysis.
SA
MOCN scenario
analysis
Supports PLMN exception check and analysis for DT data in MOCN and MORAN scenarios. NSASA
NR DT assisted analysis and optimization consists of the seven analysis modules listed in the following table. You can select analysis modules
based on scenarios.

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DTA Rule Library Capability – Low Throughput/Event Analysis
Introduction: The solution automatically identifies events and low-throughput road sections based on DT data, analyzes their root causes, and provides
handling suggestions.
KPI evaluation and problem
identification
Problem cause locating
Optimization suggestions
Checking problem road sections or cells based
on problem identification rules
 Coverage interference: NR coverage interference
 Signaling-plane problems: NR addition failures,
call drops, handover failures, re-establishment
problems, and frequent handovers
 Service-plane problems: frequent handovers and
low rank
0%
20%
40%
60%
80%
100%
0%
10%
20%
30%
[0,600) [600,700) [700,800) [800,900) [900,1000) [1000,1100) [1100,1200) [1200,21000)
DL MAC Throughput
Problem road
sections
Downlink interference caused by the
same PCI mod 3 leads to anchor
reestablishment.
Improper MIMO beams cause cell
overlap interference.
Determining the problem causes based on problem locating rules
 Re-establishment: The PCI mod 3 values of the anchor cells are the same, or the
neighboring cell of the anchor cell is missing, resulting in handover failures and re-
establishment.
 Frequent handover: Overshoot coverage of anchor cells due to improper downtilts, and
overshoot coverage of NR cells due to improper MIMO beam configurations occur.
 Low rank: Multiple paths cannot be formed due to incorrect rank parameter
configurations or open areas.
 Low-throughput road sections: Parameter configurations are incorrect, or configurations
of fixed rank parameters are improper.
0%
20%
40%
60%
80%
100%
0%
5%
10%
15%
20%
25%
30%
35%
DL MAC Throughput
General optimization measures
 Basic problem: generating the base
stations that have alarms reported or
have not been reconstructed
 Hard adjustment: optimizing antenna
parameters
 Soft adjustment: adding X2 links and
neighboring cells, and optimizing
performance parameters

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DTA Rule Library Capability – Voice EPS FB
EPS FB intelligent
demarcation tool
Problem locating engine
 Process conflict
 SIP exception
 Paging failure
 XXX
60+
judgment rules
 Automatic identification of parameter configuration problems:
 Function/policy parameter modification script
 Intra-frequency and co-PCI conflicting neighboring
cells/missing neighboring cells
 Automatic identification of air interface problems:
 Coverage/poor-quality cell association
 Automatic identification of SIP exceptions:
 Identification of the first release point
 Cause extraction of abnormal messages
 Rectification of known problems
 PA/PHU test logs
 Dingli (10.4.0.95 or
later) test logs
 Site configuration
files
 EPs
Root cause
&
optimization
solution
output
 XXX
 Function switch/license problem
 Neighboring cell configuration problem
 B1 measurement and control not delivered
 Redirection instead of handover
implemented
 Air interface poor quality
Data sources
MO and MT
log association
RAN Core network Device
 Troubleshooting guide for one-problem scenario
 30+ suggestions for known problem
troubleshooting
 Rules for triggering four types of abnormal SIP
messages
GENEXCloud
DT
indicator
statistics
 E2E call completion rate
 EPS FB handover/redirection success rate
 MO and MT delay and segmentation in the 5G-to-5G
and 5G-to-4G scenarios
 Fast return success rate & segment delay
 Statistics on EPS FB priorities
Internal guides, supporting
in-depth locating
Introduction: The solution automatically collects statistics on the EPS FB success rate and delay based on DTs, analyzes events, and provides solutions.
(voice rule)

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DTA Rule Library Capability – MOCN PLMN Check
China Unicom
construction area
Original 4G network: 1.8 GHz, 2.1 GHz,
and 900 MHz
46001
Adding SgNB
Host operator
Original 4G network: 1.8 GHz/
2.1 GHz/800 MHz
46011
NR:46001/46011
5G shared
by the host
operator
Guest operator
NSA UE:
NSA UE:
4G-only UE
4G-only UE
NR: 46001/46011
5G shared
by the host
operator
2
1
1
2
Problems from the anchor side to the NR side for
guest operators
Problems from the NR side to the NR side for
guest operators
Problem Type Root Cause
• Event B1
reported, but
no SCG added
• SCG deleted
due to anchor
switchover
• A3 reported
but no
handover
occurs
PLMN misconfiguration of neighbor relationships
between LTE and shared NR
Inconsistency between PLMN and NR shared PLMN
list
NrExternalCellPlmn misconfiguration from LTE to
Shared NR
Problem Type Root Cause
A3 reported but
no handover
occurs
PLMN misconfiguration from NR to NR neighboring
cells
NREXTERNALNCELLPLMN missing configuration
from NR to NR neighboring cells
TAC misconfiguration in the PLMN list of external
NR cells
In the China Telecom and China Unicom scenario, the host operator uses the existing policy, but the PLMN configuration
may be incorrect at the guest operator side. The NR DT assisted analysis and optimization adds PLMN check rule
capabilities, such as SCG addition and intra-frequency handover for the guest operator.