移动宽带的3G演进：HSPA与LTE - 第2版

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"3G.Evolution.HSPA.and.LTE.for.Mobile.Broadband - Academic Press 2nd.Edition.Oct.2008" 本书是《3G演进：HSPA与LTE移动宽带》的第二版，由Erik Dahlman、Stefan Parkvall、Johan Sköld和Per Benging四位作者共同编写，由学术出版社（Academic Press，现为Elsevier出版集团的一部分）于2008年10月发布。该书深入探讨了3G技术的演进，特别是高速分组接入（HSPA）和长期演进（LTE）这两个关键的移动宽带技术。 3G演进： 3G技术，全称为第三代移动通信技术，是为了提供比2G系统更高的数据传输速率和更好的服务质量（QoS）。随着用户对数据需求的增加，3G技术通过引入WCDMA（宽频码分多址）和UMTS（通用移动通信系统）等标准，实现了语音和数据服务的融合，为移动互联网的发展奠定了基础。 HSPA（High-Speed Packet Access）： HSPA是3G技术的一个重要升级，它包括HSUPA（高速上行链路分组接入）和HSDPA（高速下行链路分组接入），显著提高了3G网络的数据传输速度。HSUPA提高了上行数据速率，使得上传数据如视频分享、云存储等应用变得更为流畅，而HSDPA则提升了下行速率，优化了用户下载体验。 LTE（Long Term Evolution）：作为3G演进的下一步，LTE被设计为一个全IP网络，旨在提供接近甚至超过100Mbps的峰值下载速度。LTE采用OFDM（正交频分复用）和MIMO（多输入多输出）等先进技术，极大地提高了频谱效率和数据传输速度，同时降低了延迟，为用户提供更高质量的移动宽带服务。本书第二版可能涵盖了以下内容： 1. LTE的系统架构：包括E-UTRAN（演进型UTRAN）和EPC（演进型核心网）的详细描述，以及它们如何支持更高的数据速率和更低的时延。 2. 无线接口技术：如OFDMA、SC-FDMA（单载波频分多址）的工作原理及其对性能的提升。 3. 小区部署和频率规划：如何有效利用频谱资源以最大化网络容量和覆盖范围。 4. MIMO技术：介绍多天线系统的增益和实现方式。 5. 调度算法和资源分配：阐述如何在多个用户间公平且高效地分配网络资源。 6. 移动性管理：如何在不同小区间平滑切换以保持连接的连续性。 7. VoLTE（Voice over LTE）：介绍如何在LTE网络中实现高质量的语音服务。 8. HSPA+增强：讨论HSPA的进一步增强版本，如DC-HSPA+（双载波HSPA+）和MIMO支持，以提高3G网络性能。 9. 网络演进策略：分析从3G向4G过渡的不同路径和考虑因素。该书对于理解3G到4G的演进历程，以及移动通信技术的核心概念和发展趋势具有重要价值，适合通信工程师、研究人员、行业从业者以及对该领域感兴趣的读者阅读。

List of Figures

1.1 The standardization phases and iterative process. . . . . . . . . . . . . . . . . . . . 8

1.2 3GPP organization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.3 Releases of 3GPP specifications for UTRA. . . . . . . . . . . . . . . . . . . . . . . 11

1.4 The definition of IMT-2000 in ITU-R. . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.1 The terminal development has been rapid the past 20 years. . . . . . . . . . 16

2.2 The bit rate – delay service space that is important to cover

when designing a new cellular system. . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.3 One HSPA and LTE deployment strategy: upgrade to HSPA

Evolution, then deploy LTE as islands in the WCDMA/HSPA sea. . . . 25

3.1 Minimum required E

at the receiver as a function of

bandwidth utilization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

3.2 Signal constellations for (a) QPSK, (b) 16QAM and (c) 64QAM. . . . . . 35

3.3 Distribution of instantaneous power for different modulation

schemes. Average power is same in all cases. . . . . . . . . . . . . . . . . . . . . . 37

3.4 Multi-path propagation causing time dispersion and radio-channel

frequency selectivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

3.5 Extension to wider transmission bandwidth by means of multi-

carrier transmission. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

3.6 Theoretical WCDMA spectrum. Raised-cosine shape with roll-off

α  0.22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

4.1 (a) Per-subcarrier pulse shape and (b) spectrum for basic OFDM

transmission. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

4.2 OFDM subcarrier spacing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

4.3 OFDM modulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

4.4 OFDM time–frequency grid. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

4.5 Basic principle of OFDM demodulation. . . . . . . . . . . . . . . . . . . . . . . . . 47

4.6 OFDM modulation by means of IFFT processing. . . . . . . . . . . . . . . . . . 48

4.7 OFDM demodulation by means of FFT processing. . . . . . . . . . . . . . . . . 49

4.8 Time dispersion and corresponding received-signal timing. . . . . . . . . . . 50

4.9 Cyclic-prefix insertion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

4.10 Frequency-domain model of OFDM transmission/reception. . . . . . . . . . 52

4.11 Frequency-domain model of OFDM transmission/reception with

‘ one-tap equalization ’ at the receiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

4.12 Time-frequency grid with known reference symbols. . . . . . . . . . . . . . . . 53

xvi

4.13 (a) Transmission of single wideband carrier and (b) OFDM

transmission over a frequency-selective channel. . . . . . . . . . . . . . . . . . . 54

4.14 Channel coding in combination with frequency-domain interleaving

to provide frequency diversity in case of OFDM transmission. . . . . . . . 55

4.15 Subcarrier interference as a function of the normalized Doppler

spread f

Doppler

/ Δf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

4.16 Spectrum of a basic 5 MHz OFDM signal compared with WCDMA

spectrum. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

4.17 OFDM as a user-multiplexing/multiple-access scheme: (a) downlink

and (b) uplink. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

4.18 Distributed user multiplexing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

4.19 Uplink transmission-timing control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

4.20 Broadcast scenario. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

4.21 Broadcast vs. Unicast transmission. (a) Broadcast and (b) Unicast. . . . . 62

4.22 Equivalence between simulcast transmission and multi-path

propagation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

5.1 General time-domain linear equalization. . . . . . . . . . . . . . . . . . . . . . . . . 66

5.2 Linear equalization implemented as a time-discrete FIR filter.. . . . . . . . 67

5.3 Frequency-domain linear equalization. . . . . . . . . . . . . . . . . . . . . . . . . . . 69

5.4 Overlap-and-discard processing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

5.5 Cyclic-prefix insertion in case of single-carrier transmission. . . . . . . . . 70

5.6 Orthogonal multiple access: (a) TDMA and (b) FDMA. . . . . . . . . . . . . 72

5.7 FDMA with flexible bandwidth assignment. . . . . . . . . . . . . . . . . . . . . . 73

5.8 DFTS-OFDM signal generation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

5.9 PAR distribution for OFDM and DFTS-OFDM, respectively.

Solid curve: QPSK. Dashed curve: 16QAM. . . . . . . . . . . . . . . . . . . . . . 75

5.10 Basic principle of DFTS-OFDM demodulation. . . . . . . . . . . . . . . . . . . . 76

5.11 DFTS-OFDM demodulator with frequency-domain equalization. . . . . . 77

5.12 Uplink user multiplexing in case of DFTS-OFDM. (a) Equal-

bandwidth assignment and (b) unequal-bandwidth assignment. . . . . . . . 78

5.13 Localized DFTS-OFDM vs. Distributed DFTS-OFDM. . . . . . . . . . . . . 78

5.14 Spectrum of localized and distributed DFTS-OFDM signals. . . . . . . . . 79

5.15 User multiplexing in case of localized and distributed DFTS-OFDM. . . 79

6.1 Linear receive-antenna combining. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

6.2 Linear receive-antenna combining. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

6.3 Downlink scenario with a single dominating interferer (special

case of only two receive antennas). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

6.4 Receiver scenario with one strong interfering mobile terminal:

(a) Intra-cell interference and (b) Inter-cell interference. . . . . . . . . . . . . 86

6.5 Two-dimensional space/time linear processing (two receive antennas). . 87

List of Figures

xvii

6.6 Two-dimensional space/frequency linear processing (two receive

antennas). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

6.7 Two-antenna delay diversity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

6.8 Two-antenna Cyclic-Delay Diversity (CDD). . . . . . . . . . . . . . . . . . . . . . 90

6.9 WCDMA Space–Time Transmit Diversity (STTD). . . . . . . . . . . . . . . . . 91

6.10 Space–Frequency Transmit Diversity assuming two transmit

antennas. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

6.11 Classical beam-forming with high mutual antennas correlation:

(a) antenna configuration and (b) beam-structure. . . . . . . . . . . . . . . . . . 93

6.12 Pre-coder-based beam-forming in case of low mutual antenna

correlation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

6.13 Per-subcarrier pre-coding in case of OFDM (two transmit

antennas). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

6.14 2  2-antenna configuration.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

6.15 Linear reception/demodulation of spatially multiplexed signals. . . . . . . 99

6.16 Pre-coder-based spatial multiplexing. . . . . . . . . . . . . . . . . . . . . . . . . . . 100

6.17 Orthogonalization of spatially multiplexed signals by means of

pre-coding. λ

i,i

is the i th eigenvalue of the matrix H

H . . . . . . . . . . . . 101

6.18 Single-codeword transmission (a) vs. multi-codeword

transmission (b). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

6.19 Demodulation/decoding of spatially multiplexed signals based on

Successive Interference Cancellation. . . . . . . . . . . . . . . . . . . . . . . . . . . 103

7.1 (a) Power control and (b) rate control. . . . . . . . . . . . . . . . . . . . . . . . . . 106

7.2 Channel-dependent scheduling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

7.3 Example of three different scheduling behaviors for two users with

different average channel quality: (a) max C/I, (b) round robin, and

7.4 Illustration of the principle behavior of different scheduling strategies:

(a) for full buffers and (b) for web browsing traffic model. . . . . . . . . . 119

7.5 Example of Chase combining. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

7.6 Example of incremental redundancy. . . . . . . . . . . . . . . . . . . . . . . . . . . 122

8.1 WCDMA evolution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

8.2 WCDMA radio-access network architecture. . . . . . . . . . . . . . . . . . . . . 130

8.3 WCDMA protocol architecture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

8.4 Simplified view of physical layer processing in WCDMA. . . . . . . . . . 133

8.5 Channelization codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

9.1 Time- and code-domain structure for HS-DSCH. . . . . . . . . . . . . . . . . . 140

9.2 Channel-dependent scheduling for HSDPA. . . . . . . . . . . . . . . . . . . . . . 141

9.3 Illustration of the HSDPA architecture. . . . . . . . . . . . . . . . . . . . . . . . . . 143

List of Figures

xviii

9.4 Dynamic power usage with HS-DSCH. . . . . . . . . . . . . . . . . . . . . . . . . 145

9.5 Channel structure with HSDPA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

9.6 MAC-hs and physical-layer processing. . . . . . . . . . . . . . . . . . . . . . . . . 148

9.7 Priority handling in the scheduler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

9.8 Transport-block sizes vs. the number of channelization codes for

QPSK and 16QAM modulation. The transport-block sizes used for

CQI reporting are also illustrated. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

9.9 Generation of redundancy versions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

9.10 Multiple hybrid-ARQ process (six in this example). . . . . . . . . . . . . . . 156

9.11 Protocol configuration when HS-DSCH is assigned. The numbers

in the rightmost part of the figure corresponds to the numbers to

the right in Figure 9.12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157

9.12 Data flow at UTRAN side. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158

9.13 Measurements and resource limitations for HSDPA. . . . . . . . . . . . . . . 160

9.14 Change of serving cell for HSPA. It is assumed that both the

source and target NodeB are part of the active set. . . . . . . . . . . . . . . . . 161

9.15 The principle of two-stage rate matching. . . . . . . . . . . . . . . . . . . . . . . . 164

9.16 An example of the generation of different redundancy versions in

the case of IR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

9.17 The channel interleaver for the HS-DSCH. . . . . . . . . . . . . . . . . . . . . . . 168

9.18 The priority queues in the NodeB MAC-hs (left) and the

reordering queues in the UE MAC-hs (right). . . . . . . . . . . . . . . . . . . . . 171

9.19 Illustration of the principles behind reordering queues. . . . . . . . . . . . . 171

9.20 The structure of the MAC-hs header. . . . . . . . . . . . . . . . . . . . . . . . . . . 173

9.21 Timing relation for the CQI reports. . . . . . . . . . . . . . . . . . . . . . . . . . . . 176

9.22 HS-SCCH channel coding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179

9.23 Fractional DPCH (F-DPCH), introduced in Release 6. . . . . . . . . . . . . . 180

9.24 Basic structure of uplink signaling with IQ/code-multiplexed

HS-DPCCH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181

9.25 Detection threshold for the ACK/NAK field of HS-DPCCH. . . . . . . . . 183

9.26 Enhanced ACK/NAK using PRE and POST. . . . . . . . . . . . . . . . . . . . . 183

10.1 Enhanced Uplink scheduling framework. . . . . . . . . . . . . . . . . . . . . . . . 187

10.2 The architecture with E-DCH (and HS-DSCH) configured. . . . . . . . . . 190

10.3 Separate processing of E-DCH and DCH. . . . . . . . . . . . . . . . . . . . . . . 191

10.4 Overall channel structure with HSDPA and Enhanced Uplink.

The new channels introduced as part of Enhanced Uplink are

shown with dashed lines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

10.5 MAC-e and physical-layer processing. . . . . . . . . . . . . . . . . . . . . . . . . . 194

10.6 Overview of the scheduling operation. . . . . . . . . . . . . . . . . . . . . . . . . . 198

10.7 The relation between absolute grant, relative grant and serving

grant. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200

10.8 Illustration of relative grant usage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200

List of Figures

xix

10.9 Illustration of the E-TFC selection process. . . . . . . . . . . . . . . . . . . . . 203

10.10 Synchronous vs. asynchronous hybrid ARQ. . . . . . . . . . . . . . . . . . . . 205

10.11 Multiple hybrid ARQ processes for Enhanced Uplink. . . . . . . . . . . . . 206

10.12 Retransmissions in soft handover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207

10.13 Code allocation in case of simultaneous E-DCH and HS-DSCH

operation (note that the code allocation is slightly different when

no HS-DPCCH is configured). Channels with SF  4 are shown

on the corresponding SF4 branch for illustrative purposes. . . . . . . . . 209

10.14 Data flow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211

10.15 Illustration of the resource sharing between E-DCH and DCH

channels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212

10.16 The relation between absolute grant, relative grant and serving

grant. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

10.17 Illustration of UE monitoring of the two identities. . . . . . . . . . . . . . . 215

10.18 Example of common and dedicated scheduling. . . . . . . . . . . . . . . . . . 216

10.19 Grant table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217

10.20 Example of activation of individual hybrid ARQ processes. . . . . . . . 218

10.21 E-TFC selection and hybrid ARQ profiles. . . . . . . . . . . . . . . . . . . . . . 222

10.22 E-DCH rate matching and the r and s parameters. The bit

collection procedure is identical to the QPSK bit collection

for HS-DSCH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224

10.23 Amount of puncturing as a function of the transport block

size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225

10.24 Mapping from RSN via RV to s and r. . . . . . . . . . . . . . . . . . . . . . . . . . 226

10.25 Reordering mechanism. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228

10.26 Structure and format of the MAC-e/es PDU. . . . . . . . . . . . . . . . . . . . 230

10.27 E-DCH-related out-band control signaling. . . . . . . . . . . . . . . . . . . . . . 231

10.28 E-HICH and E-RGCH structures (from the serving cell). . . . . . . . . . . 232

10.29 Illustration of signature sequence hopping. . . . . . . . . . . . . . . . . . . . . . 233

10.30 E-AGCH coding structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234

10.31 Timing relation for downlink control channels, 10 ms TTI. . . . . . . . . 236

10.32 Timing relation for downlink control channels, 2 ms TTI. . . . . . . . . . 237

10.33 E-DPCCH coding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238

11.1 Example of MBMS services. Different services are provided in

different areas using broadcast in cells 1–4. In cell 5, unicast is

used as there is only single user subscribing to the MBMS

service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240

11.2 Example of typical phases during an MBMS session. The

dashed phases are only used in case of multicast and not for

broadcast. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241

11.3 The gain with soft combining and multi-cell reception in

terms of coverage vs. power for 64 kbit/s MBMS service

List of Figures

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Academic.Press.3G.Evolution.HSPA.and.LTE.for.Mobile.Broadband.Jul.2007

Academic.Press.3G.Evolution.HSPA.and.LTE.for.Mobile.Broadband.Jul.2007.rar

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