Mobility kpi definition and Implementation
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Mobility KPI definition based on 3GPP TS 32.450 and 32.45. Conditions for source & target cell to increment performance counter during S1 HO procedure Conditions for source & target cell to increment performance counter during X2 HO procedure
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![Mobility, S1 HO procedure
UE
Source
eNB
Target
eNB MME S-GW
Measuremnt Report
HO Decision
HO Required
HO Command
Modify Bearer Request
Modify Bearer Response
UE Context Release Command
HO
Preparation
HO
ExecutionSync and Random Access Procedure
HO Request
HO Request Ack
Admission Control
eNB status transfer
eNB status transfer
RRC Conn Reconfiguration
RRC Conn Reconfiguration Complete
HO Notify
Bearer Setup
Tracking Area Update
UE Context Release Complete
HO.ExeSucc++
HO.ExeAtt++
HO.PrepSucc[QCI]++
HO.PrepAtt[QCI]++
HO.PrepAtt[QCI]++
HO.ExeSucc++
HO.PrepAtt[QCI]++
HO.ExeAtt++](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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목차
1 2차 년도 개발의 배경
2 LTE 의 무선 자원 구성
3 LTE 의 채널 품질 측정
3.1 Reference Signal 전력 측정
3.2 Reference Signal 품질 측정
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4.1 Autonomous Multi-Cell Interference Management
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5.10 eNB 하드웨어 및 소프트웨어 구성
5.11 Key Performance Indicator (KPI)
5.13 MRO 가 적용되는 핸드오버 절차
5.14 MRO 가 적용되는 핸드오버를 위한 이벤트
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목차
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2 PCI 자동 할당에 사용되는 상태 천이와 구현 파일
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SON 기술 소개
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Automatic Inventory
Automatic Software Download
Automatic Neighbor Relation
Automatic Physical Cell ID (PCI) assignment
Release 9
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RACH optimization
Load Balancing optimization
Inter-Cell Interference Coordination
Release 10
Coverage & Capacity optimization
Enhanced Inter-Cell Interference Coordination
Cell Outage Detection and Compensation
Self-healing functions
Minimization of Drive Testing
Energy Savings
Release 11
multi-layer troubleshooting and optimization
multi-RAT HetNet troubleshooting and optimization
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Plug & Play Installation
Automatic Neighbor Relation configuration
OSS (Operating Support System) Integration
Handover Optimization
Minimization of Drive Tests
Cell Outage Compensation
Load Balancing
Energy Savings
Interaction home/macro BTS
QoS Optimization
QoS 관련 파라미터
Number of successful sessions per QoS Class Identifier (QCI)
Number of dropped sessions per QCI
Cell specific customer satisfaction rate
Min/Avg/Max throughput per QCI
Min/Avg/Max round trip delay per QCI
Packet loss per QCI
Mean number of Radio Resource Control (RRC) connected users
Mean number of RRC connected UEs with data to send per QCI
Percentage of UEs per cell that is not achieving their required GBR and not achieving the required service data unit (SDU) error ratio per QCI
Percentage of UEs for which transfer delay per IP packet was above a particular threshold
Percentage of UEs for which average throughput measured at RLC layer for each non-real time (nRT) QCI was below a particular threshold
Percentage of UEs per QCI for which the SDU error ratio is above a certain level
Number of RRC connected UEs with measurement gaps configured.
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enodeb sw to dual core
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Core 0: Soft real time function
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Small Cell for 5G
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- Data Rate 요구 사항
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재난망 시스템 기술 동향
1. 배경 1
1.1. 표준화 및 기술 동향 1
1.2. 국내 재난망 동향 2
1.2.1. 국내 재난망 추진 과정 2
1.2.2. 국내 재난망 구축 현황 (2014년 12월) 2
1.2.3. 삼성전자의 재난망 구축 3
1.2.4. 주요 이슈 4
1.3. 일본 재난망 동향 4
1.4. 미국의 PS-LTE 정책 동향 4
1.5. 미국의 PS-LTE 기술 동향 5
1.5.1. 요구 사항 5
1.5.2. 공공 민간 협력 운영 모델 6
1.6. MVNO 기술 동향 8
1.7. MVNO 필요성 8
1.8. MVNO 타입 8
1.9. MVNO 사업 동향 9
1.9.1. 한국 9
1.9.2. 미국 9
1.9.3. 유럽 10
1.9.4. 구글 10
1.9.5. 애플 10
2. 목표 11
2.1 망 구성 11
2.2 당사의 기술 보유 11
2.3 기술 요구 사항과 시장 수요의 괴리 12
2.4 당사 기술의 제한 사항 12
2.5 제안하는 개발 목표 12
3. 방안 12
4. 일정 12
5. 비용 12
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AI스피커 계기 ICT업계 새 트렌드로
사물인터넷시대, 온라인 플랫폼만으론 한계
다양한 하드웨어 통한 ‘데이터 수집’ 목적
“C-P-N-D 융합하는 기업이 생태계 주도”
‘made by Google’ 쏟아낸 구글
세계적 트렌드, 하드웨어 진출
데이터는 온라인에만 있지 않다
Son 기술 개발 2차
목차
1 2차 년도 개발의 배경
2 LTE 의 무선 자원 구성
3 LTE 의 채널 품질 측정
3.1 Reference Signal 전력 측정
3.2 Reference Signal 품질 측정
4 2차년도 개발 내용
4.1 Autonomous Multi-Cell Interference Management
4.2 Coordinated Multi-Cell Capacity and Coverage Optimization
4.3 Coordinated Multi-Cell Interference Management
4.4 Mobility Load Balancing
4.5 Mobility Robustness Optimization
5 2차 년도 개발 참고 사항
5.1 X2 Interface
5.2 X2 Interface, Load Information
5.3 X2 Interface, Load Information, Message Types
5.4 X2 Interface, Load Information, Cell ID
5.5 X2 Interface, Load Information, UL Interference Overload Indication
5.6 X2 Interface, Load Information, UL High Interference Indication
5.7 X2 Interface, Load Information, Relative Narrowband Tx Power (RNTP)
5.8 X2 Interface, ABS Information
5.9 X2 Interface, Invoke Indication
5.10 LTE 이동 통신 망 구성
5.10 eNB 하드웨어 및 소프트웨어 구성
5.11 Key Performance Indicator (KPI)
5.13 MRO 가 적용되는 핸드오버 절차
5.14 MRO 가 적용되는 핸드오버를 위한 이벤트
Son 기술 개발 1차
목차
1 가장 간섭이 작은 PCI 찾는 방법
2 PCI 자동 할당에 사용되는 상태 천이와 구현 파일
3 ANR 구성에 사용되는 메시지 내용, API
4 PRACH 최적화 대상이 되는 파라미터
5 Self healing: 구체적인 장애 감지 및 복구 방법
Son 기술 소개
SON 기술 소개
4G America 에 기술된 Benefit 내용을 적음
Release 8
Automatic Inventory
Automatic Software Download
Automatic Neighbor Relation
Automatic Physical Cell ID (PCI) assignment
Release 9
Mobility Robustness/Hand Over optimization
RACH optimization
Load Balancing optimization
Inter-Cell Interference Coordination
Release 10
Coverage & Capacity optimization
Enhanced Inter-Cell Interference Coordination
Cell Outage Detection and Compensation
Self-healing functions
Minimization of Drive Testing
Energy Savings
Release 11
multi-layer troubleshooting and optimization
multi-RAT HetNet troubleshooting and optimization
SON 전략의 상위 레벨을 요구 사항
Plug & Play Installation
Automatic Neighbor Relation configuration
OSS (Operating Support System) Integration
Handover Optimization
Minimization of Drive Tests
Cell Outage Compensation
Load Balancing
Energy Savings
Interaction home/macro BTS
QoS Optimization
QoS 관련 파라미터
Number of successful sessions per QoS Class Identifier (QCI)
Number of dropped sessions per QCI
Cell specific customer satisfaction rate
Min/Avg/Max throughput per QCI
Min/Avg/Max round trip delay per QCI
Packet loss per QCI
Mean number of Radio Resource Control (RRC) connected users
Mean number of RRC connected UEs with data to send per QCI
Percentage of UEs per cell that is not achieving their required GBR and not achieving the required service data unit (SDU) error ratio per QCI
Percentage of UEs for which transfer delay per IP packet was above a particular threshold
Percentage of UEs for which average throughput measured at RLC layer for each non-real time (nRT) QCI was below a particular threshold
Percentage of UEs per QCI for which the SDU error ratio is above a certain level
Number of RRC connected UEs with measurement gaps configured.
SON Architecture, Distributed vs Centralized
enodeb sw to dual core
eNodeB software architecture for dual core SoC
Scheduler interface
Core 0: Soft real time function
Core 1: Hard real time function
PHY control
Receive data from PHY
Small cell for 5 g
Small Cell for 5G
- 사용자 요구 사항
- 시스템 요구 사항
- Latency 요구 사항
- Data Rate 요구 사항
- Small Cell for 5G
재난망 시스템 기술 동향
1. 배경 1
1.1. 표준화 및 기술 동향 1
1.2. 국내 재난망 동향 2
1.2.1. 국내 재난망 추진 과정 2
1.2.2. 국내 재난망 구축 현황 (2014년 12월) 2
1.2.3. 삼성전자의 재난망 구축 3
1.2.4. 주요 이슈 4
1.3. 일본 재난망 동향 4
1.4. 미국의 PS-LTE 정책 동향 4
1.5. 미국의 PS-LTE 기술 동향 5
1.5.1. 요구 사항 5
1.5.2. 공공 민간 협력 운영 모델 6
1.6. MVNO 기술 동향 8
1.7. MVNO 필요성 8
1.8. MVNO 타입 8
1.9. MVNO 사업 동향 9
1.9.1. 한국 9
1.9.2. 미국 9
1.9.3. 유럽 10
1.9.4. 구글 10
1.9.5. 애플 10
2. 목표 11
2.1 망 구성 11
2.2 당사의 기술 보유 11
2.3 기술 요구 사항과 시장 수요의 괴리 12
2.4 당사 기술의 제한 사항 12
2.5 제안하는 개발 목표 12
3. 방안 12
4. 일정 12
5. 비용 12
Default eps bearer and dedicated eps bearer
Describes difference bewteen default and dedicated beaer
- beaer ID
- QCI
- APN
- PDN address
Trends of desnified mobile network, yhkim
I've read white paper, "{18ca3d99-f643-4f3b-9f38-c8e2ab910ce8}_SenzaFili_Densification.pdf" that describes direction of mobile network densification based on interview with following companies
; network equipment vendors
; test equipment vendors
; mobile netowork operator
; communication network broker, neutral hosts
I have following questions
- yhkim: How many middleprise will deploy mobile network densification?
- yhkim: Multiple backhaul usage: fiber is primary, wireless is secondary. Is it right?
- yhkim: Is there possibility for small cell to be deployed without additional bands?
Lte tdd femto cell for usage of tv white space
This document discusses using TV white space spectrum and technologies like Super WiFi (802.11af), 802.22, and LTE-TDD to support wireless internet hotspots. It compares Super WiFi and LTE-TDD for supporting hotspots and outlines both the technical and business challenges of using LTE-TDD femtocells deployed on TV white space to provide wireless internet access, such as developing an O&M system, satisfying spectrum regulations, and finding partners and customers.
Lte rach configuration and capacity
Explain LTE RACH Configuration and Capacity.
My Question:
- How many UE preambles can be handled in 10 ms frame by eNodeB?
- How many UE preambles can be handled in T300 by eNodeB?
Drx in rrc idle
Example for each nB, Number of LTE paging occasions per DRX cycle
Larger nB -> More PO during DRX cycle -> Larger Paging Capacity
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- 2. Mobility, S1 HO procedure UE Source eNB Target eNB MME S-GW Measuremnt Report HO Decision HO Required HO Command Modify Bearer Request Modify Bearer Response UE Context Release Command HO Preparation HO ExecutionSync and Random Access Procedure HO Request HO Request Ack Admission Control eNB status transfer eNB status transfer RRC Conn Reconfiguration RRC Conn Reconfiguration Complete HO Notify Bearer Setup Tracking Area Update UE Context Release Complete HO.ExeSucc++ HO.ExeAtt++ HO.PrepSucc[QCI]++ HO.PrepAtt[QCI]++ HO.PrepAtt[QCI]++ HO.ExeSucc++ HO.PrepAtt[QCI]++ HO.ExeAtt++
- 3. Mobility, X2 HO procedure UE Source eNB Target eNB MME S-GW Measuremnt Report HO Decision HO Request Admission Control HO Ack/Command RRC Conn Reconfiguration SN Status Transfer Forward User Plane Data Buffer Packet RRC Conn Reconfiguration Complete Path Switch Request Modify Bearer Request Modify Bearer Response Path Switch Request Ack UE Context Release Command HO Preparation HO Execution Sync and Random Access Procedure Bearer Setup UE Context Release Complete HO.ExeSucc++ HO.ExeAtt++ HO.PrepSucc[QCI]++ HO.PrepAtt[QCI]++ HO.PrepAtt[QCI]++ HO.PrepSucc[QCI]++ HO.ExeSucc++ HO.ExeAtt++