HSPA

1
Part 5 High Speed Packet Access
2
Contents

• Context
• What is HSPA
• Specifications
• Performances
• Hardware
• HSPA

3
1. Context

• What WCDMA can do
• deliver audio
• deliver wireless services
• deliver low quality video
• provide a low-data rate, low mobility virtual
  office at high price

• What HSPA can do
• deliver audio
• deliver wireless broadband services
• deliver high quality Video
• provide a virtual office environment at low price

4
1. Context
Bandwidth (b/s)
4G 20 M
We are Here
Average bandwidth
100M
3.75 G HSUPA 4 M
3.5 G HSDPA 1.0 M
10M
3G UMTS 120 k
1M
100k
2.5 G GPRS 64k
2G GSM 14k
10k
Year
1996
2000
2002
1998
2004
2006
2008
2010
5
1. Context

• HSDPA launched in 2006 (384 Kb -gt 1-14 Mb/s
  downlink) for broadband downloads
• HSUPA launched in 2008 (384 Kb -gt 0.8-5.7 Mb/s
  uplink) for broadband uploads
• HSPA to be launched 2009-2010 for extended data
  rate

Broadband downloads
Broadband uploads
Extended capacity
3GPP
DL 384 Kbps
DL 14.4 Mb/s
DL 42 Mb/s
UL 384 Kbps
UL 5.7 Mb/s
UL 11 Mb/s
6
2. What is HSPA

• What is HSPA (High Speed Packet Access)
• An extension of the UMTS packet air interface
• 3.6 Mbps up to theoretical 14.4 Mbps peak/user
• No modification to the Core Network Traffic
  Classes
• Difference between HSDPA and WCDMA
• 10x more spectrally efficient
• 5x faster and lower latency of 70 ms
• More Content for High End Users
• More Data Users per Cell)

Jean-Pierre Bienaimé "3G/UMTS and HSPA",
www.umts-forum.org
7
2. What is HSPA

• FOR END USERS
• High speed mobile broadband, with data speeds
  comparable to fixed networks.
• For consumers a richer, more exciting world of
  multimedia information and entertainment
  applications (on-line gaming, high quality Video
  on Demand, peer-to-peer file sharing,
  geolocalization services)
• For businesses 3G mobile finally comes of age as
  an enterprise-strength solution for email, large
  file transfers, VoIP and real-time rich media
  applications (videoconferencing etc)
• FOR MOBILE OPERATORS
• More efficient use of their existing WCDMA radio
  network assets
• Higher data speeds (up to 10x WCDMA) and reduced
  round-trip system delays to support new,
  interactive high-value services
• A value-added differentiator to promote usage,
  loyalty and revenues

8
2. What is HSPA
9
3. Specifications
New features
Adaptative Modulation and Coding (AMC)
User Equipment (UE)
SGSN
Fast ACK/NACK
Iu-ps
Iub (Interface NodeB to RNC)
Radio Network Controller (RNC)
Base Station (Node B)
Fast scheduling
10
3. Specifications

• Data Rates at different interfaces (Form H.
  Holma, HSDPA, Wiley, 06)

Uu
Iub
Iu-ps
UMTS
384 kbps
384 kbps
384 kbps
User Equipment (UE)
RNC
Node B
Uu
Iub
Iu-ps
HSPA
7.2 Mbps (2ms)
1 Mbps
1 Mbps
User Equipment (UE)
RNC
Node B
11
3. Specifications

• Adaptative modulation depending on Rx/Tx quality

High Data Rate
Medium Data Rate
Coding rate8/9 15 codes 14 Mbps
Coding rate3/9 3 codes 1.4 Mbps
Low Data Rate
Coding rate1/6 1 code 80 Kbps
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3. Specifications

• Adaptative modulation example (1/2)

C/I received by the mobile phone varies with
fading
Carrier to Interference (dB)
10
High quality transmission
8
6
4
2
Low quality transmission
0
0
20
40
60
80
100
120
Time (s)
13
3. Specifications

• Adaptative modulation example (2/2)

The Base station increases the data rate thanks
to a high quality channel
Modulation assigned by the UMTS network
16QAM 3/4
1/4 low data rate, high protection
16QAM 2/4
2/4 medium data rate, med. protection
QPSK 3/4
3/4 high data rate, low protection
QPSK 2/4
QPSK 1/4
0
20
40
60
80
100
120
Time (s)
Form H. Holma, HSDPA, Wiley, 06, p 47
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3. Specifications

• Channel Quality Information (CQI)

Low CQI
UE-1
Buffer UE-1
Buffer UE-2
Iub
High CQI
RNC
UE-2
Node B
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3. Specifications
Node B 3 (HSPA)
DCH-HSDPA

• Handover

DCH- HSUPA
DCH-DL
DCH-DL
DCH-UL
DCH-UL
UE
Node B - 1
Node B - 2
16
4. Performances
High speed
Rural
Vehicle
Urban
Pedestian
Walk
Nomadic
Urba n
Fixed
Indoor
Personal
User data rate
0.1
1.0
10
100
Mbps
Jean-Pierre Bienaimé "3G/UMTS and HSPA", A
market perspective, www.umts-forum.org
17
4. Performances
From Nokia
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4. Performances

• HSDPA peak data rate
• can only be achieved if resources are assigned
  exclusively to one mobile
• limited by the
• mobile capabilities,
• HSDPA code
• power resources
• Interference.
• peak data rate is significantly influenced by the
  network layout

http//www.awe-communications.com/Network/3G/Appli
cations/HSDPA.html
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5. Hardware
PC data cards precede handsets

• USB modem 3G from SFR
• USB Modem Sony Ericsson MD400 for HSPA 2-7 Mb / s

• HSPA Laptop connect card by ATT

• In France 3G 1.8 Mbit/s started in 2006 on SFR
  and Orange networks
• HSUPA by Bouygues

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5. Hardware

• HSUPA by Broadcom BCM21551 65nm

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6. HSPA

• HSPA (Evolved HSPA, Internet HSPA) is a wireless
  broadband standard defined in 3GPP release 7
• HSPA provides
• 42 Mbit/s on the downlink
• 22 Mbit/s on the uplink
• Quicker wake-from-idle time
• Always-on connection.
• First commercial launches announced for late
  2008.
• Uses MIMO technologies
• Uses higher order modulation.

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6. HSPA

• MIMO technology
• 2 x 2 2 Tx antennas, 2 Rx antennas
• Different information on both antennas

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6. HSPA
The trial represents another milestone for
Qualcomm in the evolution of the HSPA road map,
Alex Katouzian, VP, Qualcomm End users will
enjoy quicker connections to the Internet with
HSPA while network operators will appreciate the
opportunity to offer more services to their
subscribers.
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Conclusion

• HSPA is an extension of the UMTS packet air
  interface
• Maximum data rate upto 14.4 Mbps peak/user
• No modification to the Core Network
• Targeted to laptop broadband access to Internet
• Adaptative modulation QPSK to QAM16, QAM64
• Always-on connection with reduced power supply
• HSPA ultimate date rate improvement before
  fourth-generation mobile phones