【资料名称】：3G Tems analysis n doc

【资料作者】：Sofien Jouini

【资料日期】：2007

【资料语言】：英文

【资料格式】：DOC

【资料目录和简介】：

Summary
Acknowledgement
Abstract
General introduction ……………………………………………………………………….…1
I. Chapter 1: Overview to 3G....................................................................................3
I.1. Introduction .............................................................................................................3
I.2. R99 Networks...........................................................................................................3
I.2.1. Architecture & Interfaces ...............................................................................3
I.2.2. Functionalities of RAN Elements....................................................................5
a) NodeB ............................................................................................................5
b) Radio Network Controller (RNC)..................................................................6
c) RXI .................................................................................................................6
I.3. Migration to HSDPA ...............................................................................................6
I.3.1. R99 to R4 to R5 migration..............................................................................6
I.3.2. HSDPA Definition ..........................................................................................7
I.3.3. HSDPA features..............................................................................................7
a) Short Transmission Time Interval (TTI) ........................................................8
b) Fast radio-dependent scheduling ..................................................................8
c) High-order modulation..................................................................................9
d) Fast link adaptation.....................................................................................10
e) Fast hybrid ARQ with soft combining .........................................................10
f) Efficient Cell Power Utilization ...................................................................11
I.3.4. HSDPA channels ..........................................................................................11
I.3.5. SW/HW upgrade for HSDPA introduction ...................................................12
a) RBS...............................................................................................................12
b) RNC .............................................................................................................13
I.4. Ericsson 3G Project...............................................................................................13
I.4.1. Architecture ..................................................................................................13
I.4.2 .Coverage.......................................................................................................15
I.4.3. Services.........................................................................................................16
Summary
Sofien Jouini - vi - PFE 2006/2007
a) Traffic classes..............................................................................................16
b) Radio Access Bearers (RABs)......................................................................17
c) Mapping of 3G services in RABs .................................................................18
d) Services offered by Ericsson 3G Network in Tunisia ..................................19
I.5.Conclusion..............................................................................................................19
II.Chapter 2: Network optimization ...........................................................................20
II.1. Introduction..........................................................................................................20
II.2. Neighbors list optimization ..................................................................................20
II.2.1. Definitions ...................................................................................................21
a) Compressed mode algorithm .......................................................................21
b) Generated list by TCPU ..............................................................................22
II.2.2. Problem study..............................................................................................23
II.2.3. Conclusion...................................................................................................24
II.3. Co-existence problems .........................................................................................25
II.3.1. Definitions ...................................................................................................25
a) Spurious emissions ......................................................................................25
b) Receiver blocking ........................................................................................26
c) Isolation .......................................................................................................26
d) RBS sensitivity degradation.........................................................................28
II.3.2. Problem study..............................................................................................29
a) Spurious emission: GSM TX into WCDMA RX ...........................................29
b) Spurious emission: WCDMA TX into WCDMA RX.....................................30
c) WCDMA Receiver blocking.........................................................................31
II.3.3. Conclusion...................................................................................................31
II.4. Initial tuning.........................................................................................................32
II.4.1. Definition and Purpose ...............................................................................32
II.4.2. Process ........................................................................................................32
a) Preparation phase .......................................................................................33
b) Radio Network (RN) audit ...........................................................................33
c) Data collection.............................................................................................34
d) Post processing............................................................................................34
e) Analysis........................................................................................................34
II.4.3. Encountered problems.................................................................................35
a) Poor coverage..............................................................................................35
Summary
Sofien Jouini - vii - PFE 2006/2007
b) Missing neighbor .........................................................................................36
c) Pilot pollution and wrong parameters configuration..................................37
d) Not allowed PLMN......................................................................................38
II.5. Conclusion............................................................................................................39
III. Chapter 3: HSDPA impact...................................................................................40
III.1. Introduction.........................................................................................................40
III.2. Impact of HSDPA; theoretical study...................................................................41
III.2.1. Impact on Ec/No values .............................................................................41
III.2.2. Impact on coverage....................................................................................42
III.2.3. Impact on capacity.....................................................................................44
III.2.4. Impact on traffic distribution.....................................................................44
III.3. Practical study; Simulation with TCPU .............................................................45
III.3.1. TCPU and Monte Carlo method................................................................46
a) TCPU ...........................................................................................................46
b) Monte Carlo method....................................................................................46
c) Process of Monte Carlo Simulation in WCDMA Analysis .........................46
III.3.2. Simulation process .....................................................................................49
a) Setup common channel power .....................................................................49
b) Setup HSDPA enabled cells.........................................................................50
c) Define HSDPA related RABs.......................................................................50
d) Define WCDMA Bearer Rate Sets ...............................................................51
e) Define HSDPA capable terminal.................................................................52
f) Run network analysis ...................................................................................53
III.3.3. Simulation result ........................................................................................53
a) Impact on coverage......................................................................................53
b) Impact on capacity.......................................................................................56
c) Traffic distribution.......................................................................................57
d) Quality .........................................................................................................59
III.4. Proposal for HSDPA deployment strategy .........................................................60
III.4.1. Proposal 1..................................................................................................60
III.4.2. Proposal 2..................................................................................................63
III.5. Conclusion ..........................................................................................................64