High Speed Packet Access

What is HSPA ?

• High Speed Packet Access

• A wireless access technology designed for increasing the capacity of Internet connectivity from 3G mobile terminals

• 3G(3rd Generation)Mobile Telecommunication is based on UMTS protocols

WCDMA & UMTS• Universal Mobile Telecommunications System

• UMTS uses WCDMA radio access Technology

• Wideband Code Division Multiplexing Access • It employs Spread –spectrum Technology uses large Bandwidth-5MHz

WCDMA

The Architecture of HSPA

The amalgamation of two mobile telephony protocols1.HSDPA(High Speed Downlink Packet Access)

2.HSUPA(High Speed Uplink Packet Access)

Basic Parts:• UE(User Equipment)• Node B• RNC(Radio Network Controller)

HSDPA

• High Speed Downlink Shared Channel (HSDSCH)High Speed Signaling Control Channel (HS-SCCH)

• High Speed Dedicated Physical Control Channel(HS-DPCCH)• Channel Quality Information (CQI)• HARQ ACK/NACK Information

• Adaptive Modulation and Coding

• Fast scheduling

• Fast retransmissions

How Dose it Work

HSUPA

• Enhanced Dedicated Channel (E-DCH)

• Efficient uplink scheduling• Fast uplink retransmissions

Advantages

• Downloading Speed-14Mbps uploading Speed-5.8 Mbps

• Smooth for Transferring Large file ,live streaming and Web Browsing

• Low latency below 50 m sec

• It uses Shared Channel Transmissions

• Recovering Losing Data by Soft Combining Method At the time of retransmission

• Communication range If UE is Far away from Base Station(Node B)it cannot get the total Bandwidth

• Number of users The Quality of Service is Depends upon the Users

• Cost Expense to upgrade the whole system

Expense to Upgrade User Equipment

Disadvantages

• Evolved of HSPA (HSPA+)

• Multiple Input Multiple Output Technology

• Higher Order Modulations

• Multi Carrier Technology

Advancement of HSPA

2000 2001 2002 2003 2004 2005 2006

UMTS(Rel 99)

WCDMADL-384 kbpsUL-384 kbps

Release 5(03/2002)HSDPADL-14.4 MbpsUL-384 kbps

Release 6(12/2004)HSUPADL-14.4 MbpsUL-5.8 Mbps

Release 7(12/2006)HSPA+DL-42MbpsUL-11 Mbps

Development Of HSPA

ConclusionHSPA (High-Speed Packet Access) is a mobile telephony protocol which is based on packet sand is used in the 3G or 3.5G radio networks in order to increase the size of data to be stored and the speed of the rates of data transfer.HSPA provides five times the download speeds of the previous versions by improving spectral efficiency and providing high download speeds and low latency thus allowing users to download large files quickly.

Reference3G Evolution HSPA and LTE for Mobile Broadband

-by Eric Dalhman

www.nomor.de

www.3gpp.org

Thank You