HIGH SPEED PACKET DATA HIGH SPEED PACKET DATA EVOLUTIONEVOLUTION

PRESENTED

BY

AALAYKAPADIA

09BEC025

PANKAJ KHODIFAD

09BEC027

GUIDED

BY

Mrs. RACHNA SHARMA

CONTENTS

• ABSTRACT

• INTRODUCTION & HISTORY

• GOALS & TARGETS

• TECHNIQUES

• GENERAL INFORMATIONS

• CONCLUSION

ABSTRACTABSTRACT• IN THIS SEMINAR ,MOTIVE IS TO GIVE SOME INFORMATION

ABOUT HIGH SPEED PACKET DATA ACCESS, AND ITS LATEST TECHNIQUE 3GPP.

• IN GENERAL THIS SEMINAR CONSISTS INTRODUCTION OF MIMO , HIGHER ORDER MODULATION ,PROTOCOL OPTIMIZATION,AND OPTIMIZATION OF PROBLEM RELATED TO IP.

• MAIN AIM IN THIS SEMINAR IS TO DESCRIBE THESE IMPROVEMENTS IN DETAIL AND SHOW THAT HSPA+ CAN REACH PERFORMANCE COMPARABLE TO THOSE OF LONG TERM EVOLUTION OF UMTS(TERRESTRIAL RADIO ACCESS NETWORK) IN 5 MHz DEPLOYMENT.

4

Key success factor for building a mass market

Established end-user behavior

INTRODUCTION & HISTORY

HSPDA Evolution

INTRODUCTION & HISTORY

• HIGH SPEED PACKET DATA EVOLUTION IS ALSO KNOWN AS H S P A + .• HSPA+ IS A WIRELESS BROADBAND STANDARD DEFINED IN  3 G P P  

RELEASE 7 AND ABOVE.• . • THE 8 4  M BP S AND 2 2  M BP S REPRESENT THEORETICAL PEAK SECTOR

SPEEDS.• THE ACTUAL SPEED FOR USER WILL BE LOWER.AT CELL EDGE AND

EVEN AT HALF THE DISTANCE TO THE CELL EDGE THERE MAY ONLY BE SLIGHT INCREASE COMPARED WITH 14.4 MBPS.

INTRODUCTION & HISTORY

• THE DEMANDS OF PACKET DATA APPS. HAVE RESULTED IN SEVERAL IMPROVEMENTS OVER THE ORIGINAL W C D M A R E L E A S E 9 9 .

• THE DOWNLINK WAS IMPROVED IN R E L E A S E 5 WITH H S P D A ,WHICH PROVIDED HIGH SPEED SHARED CHANNEL WITH FAST LINK ADAPTATION & SCHEDULING , H Y BR ID AR Q , SHORT 2 m s T T I , AND FAST INTER-CELL INTERFERENCE SUPRESSION.

• RECENTLY WORK HAS STARTED TO EVOLVE THE U T R AN WITH L O N G T E R M E V O L U T I O N ( L T E ) , PROVIDING A NEW AIR INTERFERENCE.

• LTE WILL BE SUPPORTING FLEXIBLE SPECTRUM ALLOCATION 1.5MHz AND UPTO 20MHz, AND PROVIDE SIGNIFICANT PERFORMANCE IMPROVEMENTS IN APPLICATION PERFORMANCE AND SYSTEM CAPACITY.

• FOR OPERATORS WITH EXISTING H S P A DEPLOYMENT, THE POSSIBILITY TO EVOLVE HSPA SHOULD PROVIDE AN EASY WAY TO UPDATE THE SYSTEM.

• FOR THIS REASON WORK ON HSPA EVOLUTION HAS STARTED IN 3 G P P .IN THIS SEMINAR ,THE MAIN TECHNOLOGIES ARE USED TO EVOLVE THE H S P A SYSTEM, COMPARE THE REACHABLE PERFORMANCE TO THE PERFORMANCE GOALS OF THE LTE IN 5MHz BANDWIDTH, AND SUMMARIZE THE CONCEPT OF HSPA+.

• IN THIS SEMINAR,THE COLLECTION OF THE VARIOUS INDIVIDUAL IMPROVEMENTS PROVIDES A COMPREHENSIVE OVERVIEW OF HSPA+.

INTRODUCTION & HISTORY

PERFORMANCE GOALS• THE PERFORMANCE GOALS FOR LTE OF UTRAN HAVE BEEN

AGREED UPON IN 3GPP AND ARE SUMMARIZED IN TABLE 1.

PERFORMANCE GOALS

• LTE SHOULD WORK WITH HIGH MOBILITY , PROVIDE LARGE COVERAGE ,ALLOW FLEXIBLE SPECTRUM ALLOCATION,EASY MIGRATION, AND CO-EXISTANCE WITH EARLIER UTRAN RELEASE.

• THE PERFORMANCE OF HSPA+ SHOULD TARGET LTE PERFORMANCE WITH TWO MAJOR DIFFERENCE:1. THE BANDWIDTH IS LIMITED TO 5MHz, 2. THE TRANSMISSION TIME INTERVAL IS 2 ms TO 1ms FOR LTE.

• THE LONGER TTI WILL NOT ALLOW HSPA+ TO REACH USER PLANE LATENCY TARGET OF LTE.

TECHNIQUES• IN THIS ,ANSWERS WILL BE GIVEN TO ACHIEVE TARGETS THAT

HAVE BEEN SET FOR PERFORMANCE.

• 1 MIMO:-• INCREASING DATA RATE CAN BE ACHIEVED BY TRANSMITTING

MULTIPLE PARALLEL TRANSPORT TO A SINGLE USER.THIS IS OFTEN REFERRED TO AS MULTIPLE INPUT MULTIPLE OUTPUT.

• THE PREFERRED USE FOR CHANNELS WITH FAVOURABLE CORRELATION PROPERTIES E.G SMALL CELLS OR INDOOR DEPLOYMENT.

• THE RECEIVER HAS THE POSSIBILITY TO SEPARATE THE MULTIPLE DATA STREAMS BY USING TH CHANNEL PROPERTIES AND KNOWLEDGE OF CODING SCHEME.

• IN ORDER FOR THE RECEIVERS TO SOLVE THIS TASK IT IS NECESSARY TO STANDARDIZE THE USED MULTI-LAYER TRANSMISSION SCHEME.

• THE LINK ADAPTION IS A MIX OF SPATIAL AND TEMPORAL ADAPTION.FOR EACH TTI ,OR RATHER AT A RATE SET BY THE NETWORK .

• TO INFORM THE UE ABOUT THE ACTUAL PARAMETERS OF A TRANSMISSION , THE DOWNLINK CONTROL CHANNEL HS-SCCH , HAS BEEN ADAPTED TO INCORPORATE MIMO INFORMATION.

• AT EACH TTI , WHEN A PERTICULAR USER IS SCHEDULED ,THE NODE-B INCLUDES THE USED PRE-CODING WEIGHT,THE NUMBER OF STREAMS AND THE MODULATION USED ON EACH STREAM TO THE FIRST PART OF THE HS-SCCH.

TECHNIQUES

TECHNIQUES

• IN ORDER TO INTRODUCE MIMO, THE UPLINK SIGNALING HAS BEEN MODIFIED SLIGHTLY .THE RELEASE 5/6 HS-DPCCH HAS BEEN EXPANDED TO ACCOMMODATE THE NEW MIMO SIGNALING.

• SINCE TWO TRANSPORT BLOCKS CAN BE TRANSMITTED ,EACH WITH ITS OWN HARQ PROCESS ,THE HARQ ACK/NACK FIELD OF THE HS-DPCCH HAS TO BE EXPANDED TO ACCOMMODATE SIGNALING FOR THE SECOND STREAM.

• IN RELEASE 5/6 THE ACK BIT IS REPEATED TO 10 BITS.FOR, MIMO PURE REPETITION WOULD GIVE A CODE WITH HAMMING DISTANCE 5. HOWEVER ,IF THE ACK/NACK IS JOINTLY ENCODED ,A CODE WITH HAMMING DISTANCE 6 CAN BE FOUND.

TECHNIQUES

• THE CQI EVOLUTION IS SLIGHTLY MODIFIED COMPARED TO RELEASE 5. THE MAIN REASON FOR THIS IS THE CODE-REUSE INTERFERENCE TERM THAT IS PRESENT WHEN TRANSMITTING TWO STREAMS.

• SINCE THE TERM WILL BE DEPENDENT ON THE ACTUAL CHANNEL REALIZATION AND CODE ALLOCATION , ONLY THE UE CAN ESTIMATE THE INFLUENCE ON THE EXPERIENCED SINR.

Higher order modulation

• HSPA systems support the use of 16QAM in the downlink and QPSK in the uplink.

• HSPA+ use 64QAM in the downlink and 16QAM in the uplink.

• High SNR

• QPSK modulation SNR=14.5db

• 64-QAM SNR=22.5db

QPSK

16-QAM

Continuous Packet Connectivity

• Discontinuous transmission and reception can be applied in either uplink or in downlink.

• The downlink discontinuous reception will allow the UE to enter power saving mode

• The uplink discontinuous transmission will only impact the transmission of the power control commands. At any point of the time, the UE is able to transmit higher layer data (e.g. signaling or user plane data).

Continuous Packet Connectivity

• small packets either continuously (e.g. Voice over IP) or intermittently (e.g. presence information of the messaging applications, push email) require efficient support for continuously connected applications.

• battery life and the capacity of the cellular system will benefit from the introduction of discontinuous transmission and reception in active state.

Enhanced CELL_FACH operation

• HS-SCCH is continuously monitored in CELL_FACH,URA_PCH and CELL_PCH state with data transfer via the associated HS-DSCH

• Increased data rate, reduced signaling delay, and accelerated state changes

CONCLUSION We have presented a detailed overview of the

HSPA Evolution, which consists of a number of enhancements. The enhancements include Multiple Input Multiple Output(MIMO), Higher order modulation, Control channel improvements, and Protocol enhancements. With these improvements it should be possible to reach performance close to the performance goals of the Long Term Evolution. However, due to smaller bandwidth and longer transmission time interval, some LTE targets will not be reachable.

GENERAL INFORMATION

• DEPLOYMENT• On 10 June 2008 Australia's Telstra Next G network was the first to

enable some features of HSPA+.• On 5 December 2008, the first 21 Mbit/s (downlink) and 5.8 Mbit/s

(uplink) data link was established on a commercial network (Telstra).• On 23 October 2008, the first wireless data devices for the HSPA+

standard were announced. The devices, developed by Sierra Wireless in collaboration with Netcomm,Telstra, Qualcomm, and Ericsson, offer peak download speeds of 21 Mbit/s over Telstra's Next G network – three times faster than currently available HSPA modems.

• In December 2010, BSNL started upgrading their entire 3G network in 760 Indian cities from the current HSDPA (7.2 Mbit/s) standards to the HSPA+ standards with minimum speeds of 14.4 Mbit/s and maximum speeds of 21.1 Mbit/s. The entire up-gradation process will be completed by 31st March, 2011.

Important Terms• HRNTI: HS-DSCH Radio Network Temporary Identifier• Radio Resource Control (RRC) • CELL_PCH (Cell Paging channel)• CELL_DCH (Dedicated Channel),• UTRAN:UniversalTerrestrial Radio Access Network• UE (user equipment) • Radio Network Subsystem (RNS).• Voice over Internet Protocol (Voice over IP, VoIP)• protocol data unit (PDU)• round trip time (RTT)• RLC : Radio Link controller• MAC:midium access control• Enhanced Dedicated Channel (E-DCH).• DPCCH, Dedicated Physical Control Channel• CELL_FACH(Forward access channel),

Important Terms• broadcast control channel (BCCH)• Primary Common Control Physical Channel (P-CCPCH) • High-Speed Downlink Packet Access (HSDPA)• Common Control Channel (CCCH)• Dedicated Control Channels (DCCH)• High-Speed Downlink Shared Channel (HS-DSCH)• Dedicated Physical Control Channel (HS-DPCCH)• channel quality indicator (CQI)• High Speed-Physical Downlink Shared Channel (HS-PDSCH)• Enhanced Data rates for GSM Evolution (EDGE)• GSM (Global System for Mobile Communications• General packet radio service (GPRS)• DPDCH, Dedicated Physical Data Channel• URA_PCH (UTRAN Registration Area Paging channel)

REFERENCES [1] 3GPP TR 25.913, “Requirements for Evolved UTRA (EUTRA) and Evolved UTRAN (E-UTRAN)”.• [2] H. Ishii et al. “Effects of UE capabilities on high speed downlink packet access in WCDMA systems”,

Proceedings of the VTC 2004 spring.• [3] H. Edstrom et al. “Technical solutions for the 3G long term evolution”, IEEE Communications

Magazine, v. 44, March 2006, pp. 38 – 45.• [4] E. Dahl man et al. “The 3G Long-Term Evolutions – Radio Interface Concepts and Performance

Evaluation”, Proceedings of the VTC 2006 Spring.• [5] R1-063339, “Further analysis of HSDPA in CELL_FACH state”, Nokia, 3GPP TSG-RAN WG1 Meeting

#47• [6] Ericsson, “64QAM for HSDPA – Link-Level Simulation Results,” R1-062264, 3GPP TSG-RAN WG1

Meeting #46, September, 2006.• [7] Ericsson, “64QAM for HSDPA – Performance with Realistic Algorithms,” R1-063499, 3GPP TSG-RAN

WG1 Meeting #47, November, 2006.• [8] G. E. Bottomley, T. Ottoson, and Y.-P.E. Wang, “A generalized RAKE receiver for interference

suppression,” IEEE Journal on Selected Areas in Communications, vol. 8, pp. 1536-1545, August 2000.• [9] S. J. Grant, K. J. Molnar, and G. E. Bottomley, “Generalized RAKE receivers for MIMO systems,”

Proceedings of the VTC 2003 Fall.• [10] 3rd Generation Partnership Project, “UE Transmission and Reception,” TS 25.101 v7.4.0, June,

2006.• [11] R1-062266, “16QAM for HSUPA – Link-Level Simulation Results,” Ericsson, 3GPP TSG-RAN WG1

#46• [12] R1-070415, “Enhanced Phase Reference for 16QAM’, Qualcomm, Ericsson, 3GPP TSG-RAN WG1

#47-bis.• [13] 3GPP TR 25.815, “Signalling enhancements for Circuit- Switched (CS) and Packet-Switched (PS)

Connections”• [14] R1-062879, “Coding for ACK/NACK in MIMO operation”, Ericsson, 3GPP TSG-RAN WG1

Meeting#46bis.

THANKS