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Jouini_soufien WCDMA_HSDPA
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发表于 2012-12-10 15:57:14
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【资料名称】:Jouini_soufien WCDMA_HSDPA
【资料作者】:Jouini_soufien
【资料日期】:2012
【资料语言】:英文
【资料格式】:PDF
【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
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发表于 2012-12-11 17:55:48
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