Huawei provides a Voice Radar tool to evaluate voice quality from four aspects: quality, completion, accessibility, and abnormal calls. It uses key performance indicators to generate a total score on a scale of 0 to 10. The document discusses optimization solutions such as improving wireless parameters, utilizing HD voice features, and addressing network issues to improve voice quality scores.
This document contains parameters related to 2G cell configuration for an Axis network with 2247 sites and 19 BSCs. It includes common cell data parameters like AGBLK, MFRMS, ACCMIN, INDOOR_CELL values. It also includes locating cell filter data parameters like BSPWR, BSTXPWR, MSRXMIN, BSRXMIN for path loss calculation. Finally, it contains locating urgency cell data parameters like TALIM, PSSBQ, PTIMBQ, QLIMDL for handling call quality issues. The parameters need to be optimized for Axis' coverage-limited network.
Huawei - Access failures troubleshooting work shopnavaidkhan
This document provides information on troubleshooting access failures in mobile networks, including:
1. It describes the general call setup procedure and potential points of failure, such as RRC, paging, and RACH access failures.
2. Common causes of access failures are discussed, like RF issues, radio parameter problems, and other miscellaneous causes.
3. Guidance is given on how to identify and resolve different types of failures, including steps to troubleshoot RRC access failures through analyzing configuration, alarms, traffic patterns, and radio parameters.
This document describes several 2G and 3G layer 3 messages including their purpose and key information elements. For 2G, it summarizes Sys info types 1-6 which broadcast system information to mobile stations in idle and dedicated modes, including things like channel allocation and cell parameters. It also describes messages like Measurement Report, Immediate Assignment, and Handover Command that are used for handover and connection management. For 3G, it lists 21 different message types like Measurement Report and Active Set Update used for mobility management and connection control.
This document provides an overview and detailed descriptions of Circuit Switched Fallback (CSFB) features in an evolved Radio Access Network (eRAN). It describes CSFB procedures for falling back from an LTE network to UTRAN or GERAN networks to support circuit switched services like voice calls. The document includes sections on CSFB architectures, handover decisions and executions, related interfaces, engineering guidelines, parameters and troubleshooting.
This document provides definitions and descriptions for key performance indicators (KPIs) related to an eNodeB. It includes KPIs in areas such as accessibility, retainability, and mobility. The KPIs measure things like call setup success rates, call drop rates, and handover success rates. Templates are provided for standardized KPI definition. The document is intended for network planners, administrators, and operators to understand eNodeB performance.
The document discusses the interworking strategy and parameters for multicarrier networks in Hanoi, Vietnam. It proposes two scenarios for the random camping strategy across U2100 F1, F2, and F3 carriers in the idle and connected modes. It also provides settings for inter-RAT handover between U900, U2100 and GSM networks.
This document provides guidelines for LTE radio frequency (RF) network optimization. It describes the network optimization process including single site verification and RF optimization. Key aspects of RF optimization covered include preparing by collecting data and analyzing problems, adjusting parameters such as transmit power and neighbor lists, and ensuring optimization objectives like coverage, signal quality, and handover success rates are met. The document also details common issues like weak coverage, lack of a dominant cell, and cross coverage and methods for resolving them.
This document provides formulas and proposed targets for key performance indicators (KPIs) related to LTE network monitoring. It includes KPIs for LTE OSS statistics measured at the network level and LTE drive test KPIs measured through field testing. For each KPI, it provides the detailed formula, measurement methodology, and a brief description. The goal is to establish a framework for initial discussion on monitoring LTE network performance.
This document contains parameters related to 2G cell configuration for an Axis network with 2247 sites and 19 BSCs. It includes common cell data parameters like AGBLK, MFRMS, ACCMIN, INDOOR_CELL values. It also includes locating cell filter data parameters like BSPWR, BSTXPWR, MSRXMIN, BSRXMIN for path loss calculation. Finally, it contains locating urgency cell data parameters like TALIM, PSSBQ, PTIMBQ, QLIMDL for handling call quality issues. The parameters need to be optimized for Axis' coverage-limited network.
Huawei - Access failures troubleshooting work shopnavaidkhan
This document provides information on troubleshooting access failures in mobile networks, including:
1. It describes the general call setup procedure and potential points of failure, such as RRC, paging, and RACH access failures.
2. Common causes of access failures are discussed, like RF issues, radio parameter problems, and other miscellaneous causes.
3. Guidance is given on how to identify and resolve different types of failures, including steps to troubleshoot RRC access failures through analyzing configuration, alarms, traffic patterns, and radio parameters.
This document describes several 2G and 3G layer 3 messages including their purpose and key information elements. For 2G, it summarizes Sys info types 1-6 which broadcast system information to mobile stations in idle and dedicated modes, including things like channel allocation and cell parameters. It also describes messages like Measurement Report, Immediate Assignment, and Handover Command that are used for handover and connection management. For 3G, it lists 21 different message types like Measurement Report and Active Set Update used for mobility management and connection control.
This document provides an overview and detailed descriptions of Circuit Switched Fallback (CSFB) features in an evolved Radio Access Network (eRAN). It describes CSFB procedures for falling back from an LTE network to UTRAN or GERAN networks to support circuit switched services like voice calls. The document includes sections on CSFB architectures, handover decisions and executions, related interfaces, engineering guidelines, parameters and troubleshooting.
This document provides definitions and descriptions for key performance indicators (KPIs) related to an eNodeB. It includes KPIs in areas such as accessibility, retainability, and mobility. The KPIs measure things like call setup success rates, call drop rates, and handover success rates. Templates are provided for standardized KPI definition. The document is intended for network planners, administrators, and operators to understand eNodeB performance.
The document discusses the interworking strategy and parameters for multicarrier networks in Hanoi, Vietnam. It proposes two scenarios for the random camping strategy across U2100 F1, F2, and F3 carriers in the idle and connected modes. It also provides settings for inter-RAT handover between U900, U2100 and GSM networks.
This document provides guidelines for LTE radio frequency (RF) network optimization. It describes the network optimization process including single site verification and RF optimization. Key aspects of RF optimization covered include preparing by collecting data and analyzing problems, adjusting parameters such as transmit power and neighbor lists, and ensuring optimization objectives like coverage, signal quality, and handover success rates are met. The document also details common issues like weak coverage, lack of a dominant cell, and cross coverage and methods for resolving them.
This document provides formulas and proposed targets for key performance indicators (KPIs) related to LTE network monitoring. It includes KPIs for LTE OSS statistics measured at the network level and LTE drive test KPIs measured through field testing. For each KPI, it provides the detailed formula, measurement methodology, and a brief description. The goal is to establish a framework for initial discussion on monitoring LTE network performance.
SRVCC (Single Radio Voice Call Continuity) in VoLTE & Comparison with CSFBVikas Shokeen
SRVCC allows a voice call on an LTE network to be handed over to a 2G or 3G network when the user moves out of LTE coverage, ensuring the call does not drop. It uses the STN-SR identity to route the call via the MSC to the IMS network. During the SRVCC handover, the MME splits the voice bearer from other bearers and initiates relocation of the voice bearer to the MSC while relocating other bearers to the SGSN. The MSC then establishes the CS leg with the IMS network using STN-SR to complete the handover without dropping the call.
1. The document provides Huawei's mobility strategy recommendations for Maxis' LTE network, which involves LTE, UMTS, and GSM networks.
2. The strategy addresses cell selection and reselection procedures in both idle and connected modes between the different RATs and frequencies. It aims to optimize coverage and load balancing through configuration of various priority and threshold parameters.
3. Over multiple revisions from 2012 to 2018, the strategy has been updated based on trials and discussions between Maxis and Huawei to refine the parameter settings and push more users to preferred frequencies like L2600.
The document discusses 4G LTE drive testing. It describes the necessary equipment for drive testing including a notebook, GPS, and LTE dongle. It outlines key LTE radio parameters that are measured like PCI, RSRP, SINR, and MIMO. It also discusses measuring UE state information, throughput, and LTE access procedures including attach requests, random access failures, and E-RAB failures. Finally, it compares the impact of ANR capabilities versus UE capabilities on measuring neighboring cells within and between eNodeBs.
The document discusses fault analysis and troubleshooting of LTE antenna and feeder systems. It describes techniques like RSSI analysis, frequency scanning, interference detection tests, and DTP testing to identify issues like passive intermodulation (PIM) and determine if the fault is in the antenna tower or below. Parameters for simulated load testing and online interference monitoring are also outlined.
This document summarizes the steps in a 3G-UMTS originating call. It describes the setup of radio bearers and RANAP signaling in detail. The call involves establishing an RRC connection between the UE and RNC, authentication and security procedures between the UE and core network, setting up the voice radio access bearer, and connecting the call before releasing resources at the end.
The document discusses UMTS planning and dimensioning processes. It describes:
1) The overall planning process which includes system dimensioning, radio network planning, pre-launch optimization, performance monitoring, and post-launch optimization.
2) The inputs, assumptions, and steps used for air interface dimensioning which includes uplink and downlink link budget analysis to determine coverage requirements and capacity needs.
3) Traffic modelling and load calculation methods to estimate subscriber traffic per cell based on factors like subscriber density, traffic profiles, and cell area.
This document provides guidelines for LTE radio frequency (RF) network optimization. It describes the network optimization process including single site verification and RF optimization. Key aspects of RF optimization covered include preparing for optimization by collecting data, analyzing problems related to coverage, signal quality and handover success rate, and adjusting parameters like transmit power, antenna tilts and neighboring cell configurations. Common issues addressed are weak coverage, coverage holes, lack of a dominant cell, and cross coverage between cells. Optimization methods and specific cases are presented to resolve different problems.
This document provides an overview and classification of interference sources in GSM networks, as well as approaches to locating interference problems. It discusses symptoms of network interference, including errors seen in traffic statistics and drive tests. Interference sources are classified as hardware faults, intra-network interference between cells, and inter-network interference from other communication systems. Methods for locating interference include analyzing OMC data, alarms, drive tests, and using spectrum analyzers to detect interfering signals. The document also provides guidance on solving common interference issues.
The document discusses interworking between WCDMA and LTE networks. It describes cell reselection procedures where a UE camping on a UMTS cell can reselect to an LTE cell based on priorities broadcast in system information. The UE performs measurements of LTE frequencies and reselects to a cell with higher priority if thresholds are met. Parameters for controlling cell reselection are configured using managed object models. The document also discusses PS redirections and handovers between the networks.
Ericsson 2 g ran optimization complete trainingsekit123
This document provides an overview of Ericsson 2G RAN optimization training. It outlines the purpose of the training, which is to give an overview of Ericsson hardware capabilities and limitations and provide an in-depth introduction to optimization processes and features. The document summarizes key hardware such as BSCs, RBSs, TRUs, and CDUs as well as concepts like channel allocation profiles and quality measurement. It also lists common Ericsson optimization tools.
The document discusses LTE system signaling procedures. It begins with objectives of understanding LTE architecture, elementary procedures of interfaces like S1, X2 and Uu, and procedures for service setup, release and handover. It then covers topics like system architecture, bearer service architecture, elementary procedures on Uu including connection establishment and release, and procedures on S1 and X2 interfaces. The document aims to help readers understand LTE signaling flows and procedures.
The document discusses Inter-Radio Access Technology (IRAT) handover and cell change, which allows the transition of 3G voice and data services between WCDMA and GSM networks to maintain connections and prevent dropped calls. It describes the IRAT handover evaluation process based on UE measurement reports and covers topics like coverage monitoring, event reporting, parameters, handover sequences, cell change procedures, and directed retry to offload traffic between networks.
LTE uses various frequency bands and duplexing techniques to provide high-speed data and peak download speeds of up to 300 Mbps. It supports mobility of up to 350 km/h and uses advanced technologies like OFDM, SC-FDMA, MIMO and turbo coding to achieve low latency and high bandwidth. LTE specifications define channel bandwidths of 1.4, 3, 5, 10, 15 and 20 MHz with modulation schemes of QPSK, 16QAM and 64QAM.
Ericsson important optimization parametersPagla Knight
The document lists important optimization parameters for Ericsson including parameters related to system configuration, capacity management, directed retry, handover, HSDPA/EUL, IRAT, and idle mode selection and reselection. It provides descriptions of over 50 parameters that control aspects such as power levels, admission limits, thresholds for cell reselection, and criteria for measurements.
The document provides step-by-step instructions for using Atoll to design an LTE network using NSN parameter settings. It describes how to:
1) Create an LTE project in Atoll by importing default NSN parameter settings from an .mdb file.
2) Import necessary data like clutter, DTM, vector and antenna pattern data.
3) Define parameters like frequency bands, bearers, quality indicators, schedulers and equipment.
4) Perform coverage prediction studies like coverage by downlink best signal level and C/(I+N).
- The RRC setup procedure success rate (RRC SR%) measures the percentage of successful RRC connection setups. Failures can be due to resource limitations, radio conditions, or configuration issues.
- The E-RAB setup success rate (E-RAB SR%) measures the percentage of successful data radio bearer setups. Failures can be due to radio resource constraints, transport issues, or security problems.
- The circuit-switched fallback success rate (CSFB SR%) measures the percentage of successful handovers from LTE to GSM or UMTS for circuit-switched calls. This allows LTE networks to support legacy telephone services.
Inter-frequency and inter-RAT handovers can be coverage, load, or service based. Coverage-based handovers are triggered by certain A3/A4/A5 events for inter-frequency and B1/B2 events for inter-RAT. The document discusses the parameters involved in measuring cells and configuring handovers, including measurement reports, handover commands, and key performance indicators for analyzing handover issues. Common causes of handover problems include poor downlink quality, interference, and abnormal X2 interface signaling.
This documents will help to understand the details procedure of GSM IDLE Mode Behavior. GSM Idle mode behavior starting from PLMN selection, GSM Cell Camp, Cell Selection, Cell Reselection, Location Update, Paging, System Information to Measurements procedures have been captured in this document.
RF optimisation aims to identify and resolve potential faults in the network before they affect performance through activities like pre-launch optimisation, continuous optimisation, and swap management. Key aspects of optimisation include drive testing, parameter tuning, antenna adjustments, and monitoring KPIs to maintain network quality. GTL provides end-to-end optimisation services both on-site and through a virtual optimisation centre with remote analytics, tools, and concentrated RF expertise.
This document discusses LTE CS Fallback features which allow LTE networks to reuse CS infrastructure to provide voice and other circuit switched services. CS Fallback enables LTE terminals to redirect to 2G/3G networks when initiating CS services like voice calls. The key aspects covered include the CS Fallback network architecture using the SGs interface, the combined attach procedure used for location updates, advantages/disadvantages of different CS Fallback mechanisms, and signaling flows for CS Fallback and paging.
This document provides guidelines for LTE radio frequency (RF) network optimization. It describes the network optimization process including single site verification and RF optimization. The key objectives of RF optimization are improving coverage, signal quality, and handover success rate. Guidelines are provided for analyzing problems related to weak coverage, lack of a dominant cell, cross coverage, and methods for resolving them. The document also defines LTE RF optimization metrics like RSRP, SINR and handover success rate and provides target baselines.
This document provides guidelines for LTE radio frequency (RF) network optimization. It describes the network optimization process including single site verification and RF optimization. Key optimization objects are defined such as reference signal received power (RSRP), signal to interference plus noise ratio (SINR), and handover success rate. Common coverage issues like weak coverage, coverage holes, lack of a dominant cell, and cross coverage are explained along with methods to resolve them. The document also outlines RF optimization preparations, methods, and troubleshooting techniques.
SRVCC (Single Radio Voice Call Continuity) in VoLTE & Comparison with CSFBVikas Shokeen
SRVCC allows a voice call on an LTE network to be handed over to a 2G or 3G network when the user moves out of LTE coverage, ensuring the call does not drop. It uses the STN-SR identity to route the call via the MSC to the IMS network. During the SRVCC handover, the MME splits the voice bearer from other bearers and initiates relocation of the voice bearer to the MSC while relocating other bearers to the SGSN. The MSC then establishes the CS leg with the IMS network using STN-SR to complete the handover without dropping the call.
1. The document provides Huawei's mobility strategy recommendations for Maxis' LTE network, which involves LTE, UMTS, and GSM networks.
2. The strategy addresses cell selection and reselection procedures in both idle and connected modes between the different RATs and frequencies. It aims to optimize coverage and load balancing through configuration of various priority and threshold parameters.
3. Over multiple revisions from 2012 to 2018, the strategy has been updated based on trials and discussions between Maxis and Huawei to refine the parameter settings and push more users to preferred frequencies like L2600.
The document discusses 4G LTE drive testing. It describes the necessary equipment for drive testing including a notebook, GPS, and LTE dongle. It outlines key LTE radio parameters that are measured like PCI, RSRP, SINR, and MIMO. It also discusses measuring UE state information, throughput, and LTE access procedures including attach requests, random access failures, and E-RAB failures. Finally, it compares the impact of ANR capabilities versus UE capabilities on measuring neighboring cells within and between eNodeBs.
The document discusses fault analysis and troubleshooting of LTE antenna and feeder systems. It describes techniques like RSSI analysis, frequency scanning, interference detection tests, and DTP testing to identify issues like passive intermodulation (PIM) and determine if the fault is in the antenna tower or below. Parameters for simulated load testing and online interference monitoring are also outlined.
This document summarizes the steps in a 3G-UMTS originating call. It describes the setup of radio bearers and RANAP signaling in detail. The call involves establishing an RRC connection between the UE and RNC, authentication and security procedures between the UE and core network, setting up the voice radio access bearer, and connecting the call before releasing resources at the end.
The document discusses UMTS planning and dimensioning processes. It describes:
1) The overall planning process which includes system dimensioning, radio network planning, pre-launch optimization, performance monitoring, and post-launch optimization.
2) The inputs, assumptions, and steps used for air interface dimensioning which includes uplink and downlink link budget analysis to determine coverage requirements and capacity needs.
3) Traffic modelling and load calculation methods to estimate subscriber traffic per cell based on factors like subscriber density, traffic profiles, and cell area.
This document provides guidelines for LTE radio frequency (RF) network optimization. It describes the network optimization process including single site verification and RF optimization. Key aspects of RF optimization covered include preparing for optimization by collecting data, analyzing problems related to coverage, signal quality and handover success rate, and adjusting parameters like transmit power, antenna tilts and neighboring cell configurations. Common issues addressed are weak coverage, coverage holes, lack of a dominant cell, and cross coverage between cells. Optimization methods and specific cases are presented to resolve different problems.
This document provides an overview and classification of interference sources in GSM networks, as well as approaches to locating interference problems. It discusses symptoms of network interference, including errors seen in traffic statistics and drive tests. Interference sources are classified as hardware faults, intra-network interference between cells, and inter-network interference from other communication systems. Methods for locating interference include analyzing OMC data, alarms, drive tests, and using spectrum analyzers to detect interfering signals. The document also provides guidance on solving common interference issues.
The document discusses interworking between WCDMA and LTE networks. It describes cell reselection procedures where a UE camping on a UMTS cell can reselect to an LTE cell based on priorities broadcast in system information. The UE performs measurements of LTE frequencies and reselects to a cell with higher priority if thresholds are met. Parameters for controlling cell reselection are configured using managed object models. The document also discusses PS redirections and handovers between the networks.
Ericsson 2 g ran optimization complete trainingsekit123
This document provides an overview of Ericsson 2G RAN optimization training. It outlines the purpose of the training, which is to give an overview of Ericsson hardware capabilities and limitations and provide an in-depth introduction to optimization processes and features. The document summarizes key hardware such as BSCs, RBSs, TRUs, and CDUs as well as concepts like channel allocation profiles and quality measurement. It also lists common Ericsson optimization tools.
The document discusses LTE system signaling procedures. It begins with objectives of understanding LTE architecture, elementary procedures of interfaces like S1, X2 and Uu, and procedures for service setup, release and handover. It then covers topics like system architecture, bearer service architecture, elementary procedures on Uu including connection establishment and release, and procedures on S1 and X2 interfaces. The document aims to help readers understand LTE signaling flows and procedures.
The document discusses Inter-Radio Access Technology (IRAT) handover and cell change, which allows the transition of 3G voice and data services between WCDMA and GSM networks to maintain connections and prevent dropped calls. It describes the IRAT handover evaluation process based on UE measurement reports and covers topics like coverage monitoring, event reporting, parameters, handover sequences, cell change procedures, and directed retry to offload traffic between networks.
LTE uses various frequency bands and duplexing techniques to provide high-speed data and peak download speeds of up to 300 Mbps. It supports mobility of up to 350 km/h and uses advanced technologies like OFDM, SC-FDMA, MIMO and turbo coding to achieve low latency and high bandwidth. LTE specifications define channel bandwidths of 1.4, 3, 5, 10, 15 and 20 MHz with modulation schemes of QPSK, 16QAM and 64QAM.
Ericsson important optimization parametersPagla Knight
The document lists important optimization parameters for Ericsson including parameters related to system configuration, capacity management, directed retry, handover, HSDPA/EUL, IRAT, and idle mode selection and reselection. It provides descriptions of over 50 parameters that control aspects such as power levels, admission limits, thresholds for cell reselection, and criteria for measurements.
The document provides step-by-step instructions for using Atoll to design an LTE network using NSN parameter settings. It describes how to:
1) Create an LTE project in Atoll by importing default NSN parameter settings from an .mdb file.
2) Import necessary data like clutter, DTM, vector and antenna pattern data.
3) Define parameters like frequency bands, bearers, quality indicators, schedulers and equipment.
4) Perform coverage prediction studies like coverage by downlink best signal level and C/(I+N).
- The RRC setup procedure success rate (RRC SR%) measures the percentage of successful RRC connection setups. Failures can be due to resource limitations, radio conditions, or configuration issues.
- The E-RAB setup success rate (E-RAB SR%) measures the percentage of successful data radio bearer setups. Failures can be due to radio resource constraints, transport issues, or security problems.
- The circuit-switched fallback success rate (CSFB SR%) measures the percentage of successful handovers from LTE to GSM or UMTS for circuit-switched calls. This allows LTE networks to support legacy telephone services.
Inter-frequency and inter-RAT handovers can be coverage, load, or service based. Coverage-based handovers are triggered by certain A3/A4/A5 events for inter-frequency and B1/B2 events for inter-RAT. The document discusses the parameters involved in measuring cells and configuring handovers, including measurement reports, handover commands, and key performance indicators for analyzing handover issues. Common causes of handover problems include poor downlink quality, interference, and abnormal X2 interface signaling.
This documents will help to understand the details procedure of GSM IDLE Mode Behavior. GSM Idle mode behavior starting from PLMN selection, GSM Cell Camp, Cell Selection, Cell Reselection, Location Update, Paging, System Information to Measurements procedures have been captured in this document.
RF optimisation aims to identify and resolve potential faults in the network before they affect performance through activities like pre-launch optimisation, continuous optimisation, and swap management. Key aspects of optimisation include drive testing, parameter tuning, antenna adjustments, and monitoring KPIs to maintain network quality. GTL provides end-to-end optimisation services both on-site and through a virtual optimisation centre with remote analytics, tools, and concentrated RF expertise.
This document discusses LTE CS Fallback features which allow LTE networks to reuse CS infrastructure to provide voice and other circuit switched services. CS Fallback enables LTE terminals to redirect to 2G/3G networks when initiating CS services like voice calls. The key aspects covered include the CS Fallback network architecture using the SGs interface, the combined attach procedure used for location updates, advantages/disadvantages of different CS Fallback mechanisms, and signaling flows for CS Fallback and paging.
This document provides guidelines for LTE radio frequency (RF) network optimization. It describes the network optimization process including single site verification and RF optimization. The key objectives of RF optimization are improving coverage, signal quality, and handover success rate. Guidelines are provided for analyzing problems related to weak coverage, lack of a dominant cell, cross coverage, and methods for resolving them. The document also defines LTE RF optimization metrics like RSRP, SINR and handover success rate and provides target baselines.
This document provides guidelines for LTE radio frequency (RF) network optimization. It describes the network optimization process including single site verification and RF optimization. Key optimization objects are defined such as reference signal received power (RSRP), signal to interference plus noise ratio (SINR), and handover success rate. Common coverage issues like weak coverage, coverage holes, lack of a dominant cell, and cross coverage are explained along with methods to resolve them. The document also outlines RF optimization preparations, methods, and troubleshooting techniques.
To meet customers' requirements for high-quality networks, LTE trial networks must be optimized during and after project implementation. Radio frequency (RF) optimization is necessary in the entire optimization process. This document provides guidelines on network optimization for network planning and optimization personnel.
This document provides guidelines for LTE radio frequency (RF) network optimization. It describes the network optimization process, including single site verification and RF optimization. RF optimization objectives like coverage, signal quality and handover success rate are defined. Methods for adjusting azimuth, tilt, power and other parameters to improve coverage and resolve issues are presented. The roles of RSRP, SINR and other metrics in optimization are also explained. The document aims to aid network planning and optimization personnel in evaluating and improving LTE network performance.
This document provides guidelines for LTE radio frequency (RF) network optimization. It describes the network optimization process, including single site verification and RF optimization. RF optimization objectives like coverage, signal quality and handover success rate are defined. Methods for adjusting azimuth, tilt, power and other parameters to improve coverage and resolve issues are presented. The roles of RSRP, SINR and other metrics in optimization are also explained. The document aims to aid network planning and optimization personnel in evaluating and improving LTE network performance.
This document provides guidelines for optimizing LTE radio frequency (RF) networks during and after project implementation. It discusses the network and RF optimization process, including single site verification and RF optimization of clusters. Key RF optimization objects like coverage, signal quality, and handover success rate are examined. Methods for adjusting parameters like transmit power, antenna tilts and heights are provided to resolve issues like weak coverage, lack of a dominant cell, and cross coverage between sites. Drive testing and analyzing metrics like RSRP, SINR and handover rates are recommended for identifying problem areas.
This document provides guidelines for optimizing LTE radio frequency (RF) networks. It describes the network optimization process, including single site verification and RF optimization. RF optimization aims to control pilot pollution while optimizing signal coverage, handover success rates, and radio signal distribution. The document defines key performance indicators for LTE RF optimization including reference signal received power (RSRP), signal to interference plus noise ratio (SINR), and handover success rate. It also provides methods for adjusting parameters like antenna tilt, transmit power, and neighbor lists to troubleshoot issues related to coverage, signal quality, and handover rates.
This document provides a troubleshooting guide for UMTS access KPI issues. It includes:
1. An overview of the UMTS access signaling flow and definitions of related performance statistics and KPIs.
2. A classification of RRC access failure root causes such as resource congestion, RF problems, and equipment alarms.
3. Guidance on analyzing access failure data and counters to diagnose issues related to causes like CE congestion, power limitations, or code shortages.
4. Recommended solutions for optimizing access performance issues related to resource congestion.
This document provides guidelines for optimizing LTE radio frequency (RF) networks. It describes the network optimization process, including single site verification and RF optimization. RF optimization aims to control pilot pollution while optimizing coverage, signal quality, and handover success rates. The document discusses LTE RF optimization objectives such as RSRP, SINR, and handover success rate. It also covers troubleshooting coverage issues like weak coverage, lack of a dominant cell, and cross coverage. Optimization methods include adjusting antenna parameters, transmit power, and network configuration parameters.
The document provides guidance on analyzing coverage test data from a ZXPOS CNA device. It describes analyzing data related to CPICH RSCP, EC/IO, best serving cell, pilot pollution, UE transmit power, and coverage rates. The analysis helps locate issues like weak coverage, interference, unreasonable handover areas, and missing neighboring cells in order to improve network optimization and service quality.
The document discusses optimization of 3G radio networks, focusing on the RF Optimization phase. It describes the various stages of network optimization including single site verification, RF optimization of clusters of sites, parameter optimization testing, and ongoing reference route testing and analysis. The RF Optimization process involves preparing clusters and drive routes, analyzing data to identify issues, determining solutions such as antenna adjustments, implementing changes, and retesting. Analysis approaches discussed include examining cell dominance, coverage, interference, uplink coverage, pilot pollution, neighbor lists, soft handover performance, and drop calls.
This presentation will show you how to right size customer networks, take advantage of ARM, Band steering and Client Match. Check out the webinar recording where this presentation was used. https://attendee.gotowebinar.com/recording/4688596131469180162
Register for the upcoming webinars: https://community.arubanetworks.com/t5/Training-Certification-Career/EMEA-Airheads-Webinars-Jul-Dec-2017/td-p/271908
This presentation will show you how to optimize IAP’s traffic prioritization features for Voice and Video deployments and relative best practice solutions widely practiced across multiple verticals. Check out the webinar recording where this presentation was used. https://attendee.gotowebinar.com/recording/3338982991176626689
Register for the upcoming webinars: https://community.arubanetworks.com/t5/Training-Certification-Career/EMEA-Airheads-Webinars-Jul-Dec-2017/td-p/271908
Huawei provides strategies for multi-carrier networks including preferred camping and random camping. Preferred camping prioritizes certain carriers for idle users and services while random camping allows users to camp on any carrier randomly. The document discusses pros and cons of each strategy and provides examples of analyzing network strategies using audit tools, adjusting strategies based on key performance indicators, and configuring parameters for mobility, load balancing, and carrier selection policies in multi-carrier networks.
150154357 umts-multi-carrier-strategy-training-150514091047-lva1-app6892Walter Dono Miguel
Huawei provides strategies for multi-carrier networks including preferred camping and random camping. Preferred camping prioritizes certain carriers for idle mode camping and connections while random camping allows camping and connections on all carriers randomly. The strategies aim to balance considerations like system capacity, voice quality, and load balancing. Network operators can evaluate existing strategies using tools and adjust strategies based on key performance indicators to better meet their priorities such as capacity or coverage needs.
EFR is a new speech codec that provides enhanced speech quality within the same bandwidth as full rate traffic channels. It improves speech quality and increases radio connection reliability against poor signal quality. Testing showed EFR significantly improved measured speech quality index values compared to full rate, even with poor receiver signal quality. While EFR improved voice quality, some call setup failures occurred due to congestion, indicating the need for higher EFR capacity as most customers now use EFR-compatible handsets.
The document discusses Bluetooth compliance testing. It explains that compliance testing is necessary to verify technology requirements like compatibility and interoperability, as well as meet regulatory requirements for health, safety, and spectrum use. It describes the different organizations involved with compliance testing, including the Bluetooth SIG which manages the qualification process and test facilities that perform the required testing. It provides an overview of the various protocol, radio frequency, and application profile tests that must be passed to achieve Bluetooth qualification and regulatory approval to sell devices.
This document discusses the process of optimizing a 3G radio network. It covers the various phases of network optimization including single site verification, RF optimization, service testing and parameter optimization, and regular reference route testing. It then provides details on RF optimization including preparation, targets, solutions, and the analysis of drive test data to identify issues and determine required changes. Examples are also given of antenna adjustment, drop call analysis, and neighbor list verification.
The 3 sentence summary is:
Total cost for calibration of a fuel injector pump and injector nozzle tips for site DL0117 was NGN 58,050.00 including VAT of NGN 4,050.00 on a subtotal of NGN 54,000.00; the breakdown included calibration of one fuel injector pump at NGN 22,000.00 and four injector nozzle tips at NGN 8,000.00 each for a total of NGN 32,000.00. The quotation was addressed to Anthony Udeh, the Regional Manager of ATC Nigeria located in Lagos, Nigeria.
1) The document outlines a 5-step process for planning Physical Cell Identity (PCI) assignments in Atoll software.
2) The steps include: creating an LTE project with site details, defining a core planning area, creating a neighbor list, running the PCI planning, and checking outputs for collisions.
3) PCI planning ensures each cell is correctly identified by assigning one of 504 unique PCI numbers while avoiding collisions in neighboring cells or when values are divided by 6.
This document provides an overview of CDMA (Code Division Multiple Access), including its access schemes, coding, codes, spreading process, power control, handover, multipath and rake receivers. It describes how CDMA uses unique spreading codes to spread data before transmission. Receivers use correlators to despread the signal and filters to isolate the desired signal from interference. Power control is important to limit interference in this interference-limited system. Soft handovers allow connections between multiple cells. Multipath signals are combined using rake receivers to strengthen the signal.
The Excel TEXT function converts numeric values to text strings in a specified format. It has two required arguments: the value to convert and the format text. The format text uses code like "0" or "dd-mm-yyyy" to determine how numbers or dates should be displayed as text. Some examples show using TEXT to format numbers with commas and currency symbols, concatenate text with formatted dates, and conditionally format values based on location. The TEXT function allows numbers to be displayed in readable formats and combined with text for reports.
Different types of synchronization are required in a 3G network including network synchronization, node synchronization, transport channel synchronization, and radio interface synchronization. Network synchronization relates to distributing an accurate frequency reference between network elements. Node synchronization estimates and compensates for timing differences between UTRAN nodes. Transport channel synchronization defines frame synchronization between the RNC and Node B. Radio interface synchronization controls the timing of radio frame transmission to minimize UE buffers in FDD and ensure bi-directional synchronization in TDD.
The document discusses paging channels and procedures in 3GPP networks. It describes:
1) The Paging Channel (PCH) is a downlink transport channel that broadcasts paging messages to UEs over the entire cell. System Information Block 5 defines which Secondary Common Control Physical Channels (SCCPCHs) carry PCHs.
2) UEs select a SCCPCH to monitor based on the IMSI number. Paging Indicator Channels (PICH) are associated with SCCPCHs and indicate which UEs have a paging message. Paging messages are transmitted on the PCH in SCCPCH frames starting 7680 chips after the associated PICH frame.
A mobile device initiates a call by sending a setup message to the network, which routes the message through various nodes to the destination device. The destination device sends a response message back through the network to the originating device to indicate if the call was accepted or rejected. If accepted, the network sets up the necessary connections to allow audio/video transmission between the devices for the duration of the call.
This document discusses 3G frequencies allocated for IMT-2000 and UMTS. It states that the 1885-2025 MHz and 2110-2200 MHz bands are intended for worldwide IMT-2000 use. For UMTS, the 1920-1980 MHz and 2110-2170 MHz bands are used for paired FDD, while 1900-1920 MHz and 2010-2025 MHz are used for unpaired TDD. Satellite bands are 1980-2010 MHz and 2170-2200 MHz. Carrier frequencies are designated by UARFCN, which is calculated by multiplying the frequency in MHz by 5. International conferences identified additional bands for IMT-2000 use between 1710-2690 MHz.
This document provides an analysis of WCDMA radio network handover algorithms and guidance on configuring handover parameters. It describes various handover measurements, algorithms, and parameters. The document has sections on handover measurement types, algorithms for soft, hard, and inter-system handovers, and parameters for intra-frequency, inter-frequency, inter-system, compressed mode, and direct retry algorithms. It provides recommendations for settings depending on user movement speed.
Advanced control scheme of doubly fed induction generator for wind turbine us...IJECEIAES
This paper describes a speed control device for generating electrical energy on an electricity network based on the doubly fed induction generator (DFIG) used for wind power conversion systems. At first, a double-fed induction generator model was constructed. A control law is formulated to govern the flow of energy between the stator of a DFIG and the energy network using three types of controllers: proportional integral (PI), sliding mode controller (SMC) and second order sliding mode controller (SOSMC). Their different results in terms of power reference tracking, reaction to unexpected speed fluctuations, sensitivity to perturbations, and resilience against machine parameter alterations are compared. MATLAB/Simulink was used to conduct the simulations for the preceding study. Multiple simulations have shown very satisfying results, and the investigations demonstrate the efficacy and power-enhancing capabilities of the suggested control system.
Low power architecture of logic gates using adiabatic techniquesnooriasukmaningtyas
The growing significance of portable systems to limit power consumption in ultra-large-scale-integration chips of very high density, has recently led to rapid and inventive progresses in low-power design. The most effective technique is adiabatic logic circuit design in energy-efficient hardware. This paper presents two adiabatic approaches for the design of low power circuits, modified positive feedback adiabatic logic (modified PFAL) and the other is direct current diode based positive feedback adiabatic logic (DC-DB PFAL). Logic gates are the preliminary components in any digital circuit design. By improving the performance of basic gates, one can improvise the whole system performance. In this paper proposed circuit design of the low power architecture of OR/NOR, AND/NAND, and XOR/XNOR gates are presented using the said approaches and their results are analyzed for powerdissipation, delay, power-delay-product and rise time and compared with the other adiabatic techniques along with the conventional complementary metal oxide semiconductor (CMOS) designs reported in the literature. It has been found that the designs with DC-DB PFAL technique outperform with the percentage improvement of 65% for NOR gate and 7% for NAND gate and 34% for XNOR gate over the modified PFAL techniques at 10 MHz respectively.
Introduction- e - waste – definition - sources of e-waste– hazardous substances in e-waste - effects of e-waste on environment and human health- need for e-waste management– e-waste handling rules - waste minimization techniques for managing e-waste – recycling of e-waste - disposal treatment methods of e- waste – mechanism of extraction of precious metal from leaching solution-global Scenario of E-waste – E-waste in India- case studies.
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...IJECEIAES
Climate change's impact on the planet forced the United Nations and governments to promote green energies and electric transportation. The deployments of photovoltaic (PV) and electric vehicle (EV) systems gained stronger momentum due to their numerous advantages over fossil fuel types. The advantages go beyond sustainability to reach financial support and stability. The work in this paper introduces the hybrid system between PV and EV to support industrial and commercial plants. This paper covers the theoretical framework of the proposed hybrid system including the required equation to complete the cost analysis when PV and EV are present. In addition, the proposed design diagram which sets the priorities and requirements of the system is presented. The proposed approach allows setup to advance their power stability, especially during power outages. The presented information supports researchers and plant owners to complete the necessary analysis while promoting the deployment of clean energy. The result of a case study that represents a dairy milk farmer supports the theoretical works and highlights its advanced benefits to existing plants. The short return on investment of the proposed approach supports the paper's novelty approach for the sustainable electrical system. In addition, the proposed system allows for an isolated power setup without the need for a transmission line which enhances the safety of the electrical network
We have compiled the most important slides from each speaker's presentation. This year’s compilation, available for free, captures the key insights and contributions shared during the DfMAy 2024 conference.
ACEP Magazine edition 4th launched on 05.06.2024Rahul
This document provides information about the third edition of the magazine "Sthapatya" published by the Association of Civil Engineers (Practicing) Aurangabad. It includes messages from current and past presidents of ACEP, memories and photos from past ACEP events, information on life time achievement awards given by ACEP, and a technical article on concrete maintenance, repairs and strengthening. The document highlights activities of ACEP and provides a technical educational article for members.
Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapte...University of Maribor
Slides from talk presenting:
Aleš Zamuda: Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapter and Networking.
Presentation at IcETRAN 2024 session:
"Inter-Society Networking Panel GRSS/MTT-S/CIS
Panel Session: Promoting Connection and Cooperation"
IEEE Slovenia GRSS
IEEE Serbia and Montenegro MTT-S
IEEE Slovenia CIS
11TH INTERNATIONAL CONFERENCE ON ELECTRICAL, ELECTRONIC AND COMPUTING ENGINEERING
3-6 June 2024, Niš, Serbia
A review on techniques and modelling methodologies used for checking electrom...nooriasukmaningtyas
The proper function of the integrated circuit (IC) in an inhibiting electromagnetic environment has always been a serious concern throughout the decades of revolution in the world of electronics, from disjunct devices to today’s integrated circuit technology, where billions of transistors are combined on a single chip. The automotive industry and smart vehicles in particular, are confronting design issues such as being prone to electromagnetic interference (EMI). Electronic control devices calculate incorrect outputs because of EMI and sensors give misleading values which can prove fatal in case of automotives. In this paper, the authors have non exhaustively tried to review research work concerned with the investigation of EMI in ICs and prediction of this EMI using various modelling methodologies and measurement setups.
2. HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential 2
All the 4 aspects influence and help each other
• Access is the foundation of Voice
• Completion and Quality are closely related to each other.
• Quality represents overall voice quality.
• Abnormal voice indicates the probability of serious bad quality for user
Voice Radar: multidimensional and effective to Evaluate Voice Quality
Four aspect for Voice model
Quality/
abnormal
Completion
Access
Voice Radar Guarantee KPI and KQI
Quickly Call out without missing call
Call stable
Sound Clear
Total Score:
counter1*weight1+ counter2*weight2+…+counteri*weighti
RADAR 10 9 8 7 6 5 4 3 2 1
Accessibility(%) >=99.90 >=99.80 >=99.70 >=99.60 >=99.50 >=99.35 >=99.20 >=99.0 >=98.0 <98.0
Take the access radar as an example:
Radar counter is to be calculated as the average for the complete previous week, Value to be mapped into the Radar scale (0 to 10) is the average over the
Cluster or RNC
0
1
2
3
4
5
6
7
8
9
10
Accessibility
Delay
Retainability
Uplink EVQI
Downlink EVQI
UL EVQI
DL UL EVQI
Silent Ratio
Garbled Voice Ratio
Voice Quality
Abnormal Access
Completion
3. HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential 3
Radar Score Range Best Value Weight Formula
Accessibility 0~10 100% 15% (CS RRC and Cellupdate SR) * CS RAB SR
Delay 0~10 3s 10% EstabMeanTime of OrigCall AMR
Retainability 0~10 0 15% CS CDR
Ratio of uplink EVQI lower
than 3
0~10 0% 10% (EVQI.UL.Bad.Num+EVQI.UL.Poor.Num)/Total UL EVQI
Ratio of downlink EVQI
lower than 3
0~10 0% 10% (EVQI.DL.Bad.Num+EVQI.DL.Poor.Num)/Total DL EVQI
UL EVQI 0~10 5 10%
(VS.EVQI.AMRWB.UL.TotalValue+VS.EVQI.AMRNB.UL.TotalValue)
/(Total UL NB EVQI Num + Total UL WB EVQI Num ) /100
DL EVQI 0~10 5 10%
(VS.EVQI.AMRWB.DL.TotalValue+VS.EVQI.AMRNB.DL.TotalValue)
/(Total DL NB EVQI Num + Total DL WB EVQI Num ) /100
Silent Ratio 0~10 0% 10% (VS.AMRNB.ULSilent.OccurNum+VS.AMRWB.ULSilent.OccurNum)/RAB Num
Garbled Voice Ratio 0~10 0% 10% (ULGarbledVoice.OccurNum)/RAB Num
Voice Radar: Definition、Formula and Weight
4. HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential 4
Top-Quality Voice Radar Score Standard
The Radar Scoring Standard is formulated based on the big data analysis of global sites.
Level Excellent Good Accept Bad
RADAR 10 9 8 7 6 5 4 3 2 1
VOICE CSSR(%) >=99.90 >=99.80 >=99.70 >=99.60 >=99.50 >=99.35 >=99.20 >=99.0 >=98.0 <98.0
VOICE Delay(s) <=4.1 <=4.5 <=5.0 <=5.4 <=5.8 <=6.2 <=6.6 <=7.0 <=8.0 >8.0
VOICE CDR(%) <=0.08 <=0.12 <=0.15 <=0.20 <=0.25 <=0.30 <=0.40 <=0.60 <=1.0 >1.00
UL EVQI<3(%) <=5.00 <=8.00 <=12.00 <=16.0 <=20.0 <=25.0 <=30.0 <=40.0 <=50.0 >50.0
DL EVQI<3(%) <=5.00 <=8.00 <=12.00 <=16.0 <=20.0 <=25.0 <=30.0 <=40.0 <=50.0 >50.0
Average UL EVQI >=3.48 >=3.42 >=3.37 >=3.32 >=3.27 >=3.22 >=3.16 >=3.10 >=3.00 <3.00
Average DL EVQI >=3.48 >=3.42 >=3.37 >=3.32 >=3.27 >=3.22 >=3.16 >=3.10 >=3.00 <3.00
Silent Ratio(%) <=0.05 <=0.08 <=0.11 <=0.14 <=0.17 <=0.21 <=0.25 <=0.40 <=0.65 >0.65
Garbled Voice Ratio(%) <=0.01 <=0.02 <=0.03 <=0.04 <=0.05 <=0.06 <=0.08 <=0.50 <=1.0 >1.0
5. HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential 5
Top-Quality Voice Radar Score Result
Radar Name Value Original Score Weight Final Score
Voice CSSR(%)
Voice Delay(s)
Voice CDR(%)
UL EVQI<3(%)
DL EVQI<3(%)
UL EVQI
DL EVQI
Silent Ratio(%)
Voice Garbled
Ratio(%)
Total Score
6. HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential 6
Top-Quality Voice Analysis Result
Cause Detail Cause Ratio Solution
UE Part UE Problem NA
RNC Above CN or IU transmission Problem CN or IU transmission Check
RNC Inner DSP overload DSP expansion
IUB IUB transmission limit
check IUB transmission based on the Cell
IDs
RF
ECNO limit(<-16dB)
1. Increase user downlink TX power
2. increasing Active set number
3. solve RF problem
RSCP limit(<-105dBm)
1. Increase user downlink TX power
2. increasing Active set number
3. solve RF problem
RTWP limit(>-95dBm)
1. Increase user uplink TX power
2. constriction for BLER
3. PLVA
4. CS precise power control
5. crystal voice
6. RTWP Check and Optimization
In compress mode
1. set proper 2d、2f threshold
2. Compress mode Timer Optimization
TX power limited
1. Add user uplink TX power
2. increasing Active set number
3. PLVA
4. crystal voice
PSC conflict PSC conflict check and optimization
Missing Neighbor Missing Neighbor check and optimization
Other Other further analysis
7. HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential 7
Total Radar Score result:
Voice quality root cause: main issue is RF(EcNO, RSCP, RTWP), ratio
Wireless
Parameter
Optimization
HD Voice
Feature
Optimization
Network
Basic
Optimization
Solution Overview for Top-Quality Voice
Parameter Feature RF
Solution 0%
0%
8. HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential 8
Solution Name NE
Parameter
OK NOK
Parameter
Current
Value
Suggested Value MML Priority
Increase user
downlink TX
power
CELL
RLMAXDLPWR(MAXBITRATE=12200) //Add downlink power
MOD UCELLRLPWR: CellId=XX, CNDomainId=CS_DOMAIN,
MaxBitRate=12200,RlMaxDlPwr=30, RlMinDlPwr=-120;
//maintain the 3.4k txpower as before. the example is
ADD UCELLRLPWR: CellId=XX,
CNDOMAINID=CS_DOMAIN,MAXBITRATE=3400,RLMAXDLPW
R=0, RLMINDLPWR=-150, DLSF=D256;
H(in non
TCP
overload
cells)
RLMINDLPWR(MAXBITRATE=12200)
RLMAXDLPWR(MAXBITRATE=3400)
RLMINDLPWR(MAXBITRATE=3400)
Constriction for
UL BLER
RNC
BLERQUALITY
//For AMR-NB
MOD UTYPRABOLPC:RABINDEX=0, SUBFLOWINDEX=0,
TRCHTYPE=TRCH_DCH, DELAYCLASS=1, BLERQUALITY=-27,
MAXSIRSTEPUP=1500, SIRADJUSTSTEP=3,
INITSIRTARGET=112, MAXSIRTARGET=152, MINSIRTARGET=82;
//For AMR-WB
MOD UTYPRABOLPC:RABINDEX=1, SUBFLOWINDEX=0,
TRCHTYPE=TRCH_DCH, DELAYCLASS=1, BLERQUALITY=-27,
MAXSIRSTEPUP=1500, SIRADJUSTSTEP=3,
INITSIRTARGET=112, MAXSIRTARGET=152, MINSIRTARGET=82;
H
MAXSIRSTEPUP
SIRADJUSTSTEP
INITSIRTARGET
MAXSIRTARGET
MINSIRTARGET
BLERQUALITY
MAXSIRSTEPUP
SIRADJUSTSTEP
INITSIRTARGET
MAXSIRTARGET
MINSIRTARGET
BLER coefficient
optimization
RNC PERFENH_OLPC_BLER_COEF_ADJUST
SET UCORRMPARA:
PerfEnhanceSwitch=PERFENH_OLPC_BLER_COEF_ADJUST-1;
H
Solution1-Wireless Parameter Optimization with High Priority
Increase user downlink TX power: Increase voice downlink power, DL EVQI increase 0.03~0.1.
Constriction for UL BLER: Better OLPC enables UE to converge to better BLER target value faster, UL EVQI increase 0.01~0.05.
BLER coefficient optimization in light load: Better BLER target value in light load.
9. HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential 9
Sub-solution Feature ID Feature Name
Introduce
d in
Priority
Dependency on
PFM CHECK
RAN CN UE
Basic HD
WRFD-010613 AMR-WB (Adaptive Multi Rate Wide Band) RAN6.0 H RNC software Yes Yes
WRFD-011600 TFO/TrFO RAN3.0 H RNC software Yes No N/A
WRFD-140201 AMR Voice Quality Improvement Based on PLVA RAN14.0 H NodeB: WBBPd or later No No N/A
Best Experience
WRFD-160204 CS Voice Precise Power Control RAN16.0 H RNC software No No
WRFD-170201 Seamless Crystal Voice RAN17.1 H RNC: DEUa/EGPUb No No
WRFD-171201 Crystal Voice in Deep Coverage RAN17.1 H RNC: DEUa/EGPUb No No
Fastest Access
N/A Adaptive SRB Rate RAN16.0 H RNC software No No N/A
WRFD-171202 Ultrafast CS Call Setup RAN17.1 H RNC software Yes No
Speech Quality
Assessment and
Maintenance
N/A EVQI RAN16.0 H RNC software No No
WRFD-160102 Garbled Noise Detection and Correction of AMR Voice RAN16.0 H RNC software No No
WBAMRTRFO: Basic HD use AMR-WB and TrFO to improve voice quality, EVQI increase about 0.2~0.4.
Power Control Feature: Better experience by power control, EVQI increase about 0.01~0.02.
Crystal Voice: Best experience by DEUa/EGPUb decoding in RNC side, EVQI increase about 0.01~0.05.
Solution2-HD Voice Feature Optimization
10. HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential 10
Reason Ratio TOP Cells Optimization Suggest
IUB transmission limit IUB transmission check and optimization
ECNO limit(<-16dB) RF optimization
RSCP limit(<-100dBm) RF optimization
RTWP limit(>-95dBm) RTWP check and optimization
In compress mode state RF optimization
TX power limited RTWP check and RF optimization
PSC conflict
PSC check and optimization according to table
<Voice quality analysis result>
Missing Neighbor
Neighbor check and optimization according to
table <Voice quality analysis result>
Transmission check and optimization
RF optimization, PSC conflict and Neighbor check and optimization
RTWP check and optimization
Solution3-Network Basic Optimization
12. HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential 12
Clarification for UL Bler Constriction Optimization
Mechanism
Advantage
Impact
Improve ULBLER and MOS
Script(RNC)
SET UCORRMPARA: PerfEnhanceSwitch=PERFENH_OLPC_BLER_COEF_ADJUST-1;
MOD UTYPRABOLPC:RABINDEX=0, SUBFLOWINDEX=0, TRCHTYPE=TRCH_DCH, DELAYCLASS=1,
BLERQUALITY=-27, MAXSIRSTEPUP=1500, SIRADJUSTSTEP=3, INITSIRTARGET=112,
MAXSIRTARGET=152, MINSIRTARGET=82;
MOD UTYPRABOLPC:RABINDEX=1, SUBFLOWINDEX=0, TRCHTYPE=TRCH_DCH, DELAYCLASS=1,
BLERQUALITY=-27, MAXSIRSTEPUP=1500, SIRADJUSTSTEP=3, INITSIRTARGET=112, MAXSIRTARGET=152,
MINSIRTARGET=82;
It is aimed to keep a good BLER by power control.
PERFENH_OLPC_BLER_COEF_ADJUST is a optimization and make BLER better when RNC is in light load.
BLERQUALITY is the BLER target value. Smaller is better.
MAXSIRSTEPUP, SIRADJUSTSTEP, INITSIRTARGET, MAXSIRTARGET, MINSIRTARGET make UE achieve BLER much faster.
Increase UL transmit power, which may influence UL capacity.
Application experience
Silent Ratio UL EVQI<3(%) UL EVQI RTWP
before after before after before after before after
case1 0.19% 0.17% 20.64% 14.65% 3.15 3.18 -101.56 -101.08
case2 0.15% 0.10% 30.52% 6.27% 3.25 3.54 -106 -105.96
Uplink Voice quality has a good improvement.
13. HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential 13
Clarification for Add Downlink TX Power Optimization
Mechanism
Advantage
Impact
To increase CS service power and improve voice quality.
Script(RNC)
MOD UCELLRLPWR: CellId=XX, CNDomainId=CS_DOMAIN, MaxBitRate=12200,RlMaxDlPwr=30, RlMinDlPwr=-120;
After the 12.2K is modified, add power of the 3.4k SRB channel (the configuration before the modification of the 12.2k power).
ADD UCELLRLPWR: CellId=XX, CNDOMAINID=CS_DOMAIN,MAXBITRATE=3400,RLMAXDLPWR=0, RLMINDLPWR=-150, DLSF=D256;
Dl power maximum and minimum values of power control
May cause TCP ratio a little increase. So suggested implemented in non TCP
congestion cells.
The downlink power couldn’t more than
Maximum_DL_Power,
The downlink power couldn’t less than
Minimum_DL_Power
Application experience
DL EVQI<3(%) DL EVQI
before after before after
case1 24.97% 12.53% 3.13 3.21
case2 9.14% 2.22% 3.50 3.59
The bad EVQI(<3) ratio and average DL EVQI both have a good improvement.