M1 HSDPA Training HSDPA Introduction

1 © Nokia Siemens Networks HSDPA Training / 14.02.2008 / THa HSDPA Training 25.02. 29.02.2008 Cordoba, Argentina Introduction

Transcript of M1 HSDPA Training HSDPA Introduction

HSDPA Training
25.02. – 29.02.2008
Cordoba, Argentina
Introduction to HSDPA
HSPA Pushes Functionalities to Base Station
HSDPA = High Speed Downlink Packet Access
HSUPA = High Speed Uplink Packet Access
HSPA scheduling and retransmission control
in base station
HSDPA - General Principle
Data in HS-DSCH
BTS Tx pwr
channel quality (BLER)
Channel quality (CQI, Ack/Nack, TPC
BTS Tx pwr
BTS Tx power
Tx power varies
Code power per user Throughput according Channel quality
1 variable SF code per user = 3 variable SF codes simultaneously
0-15 SF16 codes per user, only 1 user at the time (2ms intervals)
Data in HS-DSCH
HSDPA - General Principle
Fast scheduling is done directly in Node-B based on feedback information from UE and knowledge of current traffic state.
New base station functions
0 20 40 60 80 100 120 140 160 -2
0 2 4 6 8
10 12 14 16
Time [number of TTIs]
• 3GPP allows multi-code transmission for R99 DCH but in practise only 1 code is used
• The HSDPA user plane channel cannot use soft handover, although the associated DCH may use soft handover
Variable spreading factor
Soft handover  Yes No
TTI 10, 20, 40 ms 2 ms
Maximum Bit Rates
• individual connection throughput
• total cell throughput
HSDPA RLC throughputs are:
UE Categories defined in 3GPP
Release’99 vs HSDPA Retransmissions 
Packet Retransmissio
Retransmissions in HSDPA
Server RNC Node-B
L1 retransmission
retransmission delays
HSDPA Protocol Model
HSDPA in Nokia RRM
The PDCP, RLC and MAC-d layers are unchanged from the Release '99 and Release 4 architecture
The new functionalities of hybrid ARQ and scheduling/priority handling are included in the MAC layer
• In the UTRAN side, these functions are included in a new entity called MAC-hs, which is located in the BTS
•  A new type of transport channel, the HS-DSCH, is introduced for HSDPA
 – It is controlled by the MAC-hs.
Fast Link Adaptation in HSDPA
0 20 40 60 80 100 120 140 160 -2
0 2 4 6 8
10 12 14 16
Time [number of TTIs]
In s t a n t a n e o u s E s N o [ d B ] C/I received
by UE
Link adaptation
BTS adjusts link adaptation mode with a few ms delay based on channel quality
reports from the UE
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Increased HSDPA capacity with 16 Users per Cell
High-capacity, high number of users with efficient data throughput per user
• Maximum number of HSDPA users per BTS: 16
• HS-DSCH is transmitted to one cell at a time from BTS
• Time multiplexed between different cells of BTS
• Up to 3 cells per BTS can be enabled for HSDPA
• Maximum number of HSDPA users per cell: 16
• HS-DSCH can be transmitted to all cells in BTS at the same time
• Provides 10.8Mbps HSDPA throughput per BTS
• HSDPA with 16 users per cell brings the HSDPA performance gains for each cell independently of the data rate in the other cells in the same BTS
•  Availability of sufficient baseband processing and transport resources required
WCDMA RAS Releases Roadmap -> RAS051
Telecom & RRM
16 HSDPA Users per BTS
Directed RRC Connection Setup for HSDPA Layer
HSDPA Mobility Handling with DCH Switching
HSDPA Shared Control Channel Power Control
Enhanced Priority Based Scheduling and Overload Control for NRT Traffic
BTS & RNC & Transmission
 Advanced Indoor Radio
3GPP Iub
Telecom & RRM
HSDPA Proportional Fair Resource Packet Scheduler
HSDPA Serving Cell Change
HSDPA Dynamic Power Allocation
Throughput Based Optimisation of the Packet Scheduler Algorithm
Power Balancing
High Capacity RNC (450Mbps)
Streaming Packet QoS
Nokia UltraSite WCDMA BTS Supreme
Triple-Mode Nokia UltraSite EDGE BTS
Nokia MetroSite WCDMA BTS
ROC Rollout Optimised Concept
WCDMA RAS Release Roadmap Summary
Telecom & RRM
HSDPA 10 & 15 Codes (peak data rate 10.8 Mbps, 7.2Mbps/user)
Shared HSDPA Scheduler for Baseband Efficiency
HSDPA Code Multiplexing
HSUPA (peak data rate 1.5 Mbps)
HSPA Layering for UEs in Common Channels
I-HSPA Support
HSUPA 2.0 Mbps
Wideband AMR Codec Set
Flexi BTS High Capacity System Module
Sameband Combiner for Flexi WCDMA
Linux Based OMS Replacing NEMU
RNC Improved Capacity
Flexible Iu
Transport Bearer Tuning
Hybrid BTS Backhaul 
HSPA Subscriber Trace
Abbreviations A-C
 A2EA AAL2 End Address
 A2SU AAL2 Switching Unit
 AA ATM Adaptation Interface
 AAL ATM Adaptation Layer 
 AESA ATM End System Address (=A2EA)
 AFI Authority and Format Identifier 
 AIS Alarm indication signal
 ALC automatic level control
 AML AXC Markup Language
 AMR Adaptive Multi Rate
 ARP Address Resolution Protocoll
 ARQ automatic repeat request
 ATM Asynchronous Transfer Mode
BB Baseband
BRM BTS Resource Manager  
BSC Base Station Controler  
BTS Base Transceiver Station
C CBR Service Category
CAC Connection Admission Control
CBC Central Broadcastin Center  
CBR Constant Bit Rate
CCCH Common Control Channels
CE Channel Element (=HWCh)
CEC Capacity Enhanced Configuration
CES Circuit Emulation Service
CoCo Connection Configuration
CPCH common packet channel
CPS Common Part Sublayer  
cps Cells Per Second
CQI Channel Quality Indication
CRC Cyclic Redundancy Check
CRP Central Routing Processor  
CS Curcuit Switched
CS64 Circuit Switched Service with 64 kbps, usually Video Call (UDI)
CT Connection Termination
Abbreviations D-I
DCN data communication network
DHCP Dynamic Host Configuration
DSP Digital Signal Processor  
DTCH Dedicated Traffic Channel
DyLo Dynamic Link Optimisation
ED Enhanced Delivery
EOLC Enhanced Overload Control
EPD Early Packet Discard
FACH Forwar Access Channel
GBR Guaranteed Bit Rate
GCD Generic Change Delivery
GoS Grade Of Service
GSM Global System for Mobile Communications (Groupe Spéciale Mobile)
GT Global Title
GUI Graphical User Interface
hdr Header
HUB central location device, aggregating/distributing traff ic
HW Hardware
ICP IMA Control Protocol
IF Interface
IOR interoperable object reference
ITU-T International Telecommunication Union
Iub RNC interface to NodeBs
Iu-BC RNC interface to CBC
Iu-CS RNC interface to MGW for CS traffic
Iu-PS RNC interface to SGSN for PS traffic
Iur RNC interface to an adjacent RNC for SHO
IWF Interworking Function
Abbreviations J-O
LAN Local Area Network
Lbo Line Build Out
MAC-sh MAC for shared ….
MCC Mobility Country Code
MCR Minimum Cell Rate
MDS management data server;
MEGACO signalling protocol between external call agents and MGW in VoIP networks
MGW Media Gateway
MSC mobile services switching centre
MSOH Multiplex Section Overhead
MSP Multiplex Section Protection
MTU Maximum Transmission Unit
NIP Network Interface PDH
NIS Network Interface SDH
NIU Network Interface Unit
NMS Network Management System
NNI: Network-Network-Interface (Iur & Iu)
O&M Operation & Maintenance
OC Optical Carrier, optical signal of synchronous optical network (SONET)
OMU Operation and Maintenance Unit
OSPF Open Shortest Path First
OSS operations support system
Abbreviations P-R
pad Padding
PDH Plesiochronous Digital Hierarchy
PDU Packet Data Unit
PET PDH Exchange Terminal
PID Path Identifier  
POH Path Overhead
PSTN public switched telephone network
PT Last bit in ATM-cell header payload identifier (AAL5 PDU end detection)
Q.2150 is needed to adapt the AAL2 signalling protocol to lower layers
Q.2150.1 is the signalling transport converter for UNI
Q.2150.2 is the signalling transport converter for NNI
Q.2630.1 AAL2 signalling capability set 1
QoS Quality of Service
QPSK Quadrature Phase-shift keying
RAB Radio Access Bearer  
RACH Random Access Channel
RAN Radio Access Network
RAS Radio Access System
RB Radio Bearer (RAB)
RCP RAN Capacity Planner  
RDI Remote Defect Indication
RF Radio Frequency, also used for Radio Planning part
RLC Radio Link Control
RLM Radio Link Measurement
RNW Radio Network
RSMU Resource and Switch Management Unit
RSOH Regenerator Section Overhead
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Abbreviations S-T SAAL: Signall ing ATM Adaptation Layer (= SSCF + SSCOP + AAL5)
SAbit used for carrying network information for several network status indications
SAR Segmentation And Reassembly sublayer  
S-AXC Standalone AXC
SCMG SCCP Management
SDH Synchronous Digital Hierarchy
SDU service data unit, information unit passed from one protocol layer to another 
SEAL simple and efficient adaptation layer; to support AAL5
SEP Signalling End Point
SET SDH Exchange Terminal
SHA Shared HSDPA Allocation
SHO Soft Handover  
SONET American SDH
SP Signalling Point
SS7 Signalling System No7
SSCOP: Service Specific Connection Oriented Protocol
SSM synchronisation status message
STC signalling transport converter  
STM synchronous transfer mode
STP Signalling Transfer Point
SW Software
TBS Transmission Block Size
TBT Transport Bearer Tuning
TCP Transmission Control Protocol
TCP/IP transmission control protocol/Internet protocol, in Iub usually used for O&M
TDM Time Division Multiplex
THP Traffic Handling Priority
TRX Transceiver of GSM-BTS
Abbreviations U-Z U UBR Service Category
UBR Unspecified Bit Rate
UBR+ Unspecified Bit Rate with a guaranteed Minimum Cell Rate (MCR/MDCR)
UDI Unrestricted Digital Information
UDP User Datagramm Protocol
Uu Air Interface
VCC Virtual Channel Connection
VCI Virtual Channel Identifier  
VoIP Voice Over IP
WAN Wide Area Network
WCI WCDMA Carrier Interface
WDU Winchester Disc Unit
WSC WCDMA System Clock
WSP W CDMA Signal Processing unit
WTR WCDMA Transmi tter and Receiver unit
XCON Cross Connection
Thank You !