Evolved HSPA

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This article contains too much jargon and may need simplification or further explanation. Please discuss this issue on the talk page, and/or remove or explain jargon terms used in the article. Editing help is available. (April 2008)

Evolved HSPA (also known as: HSPA Evolution, HSPA+, I-HSPA or Internet HSPA) is a wireless broadband standard defined in 3GPP release 7.

Evolved HSPA provides HSPA data rates up to 42 Mbit/s on the downlink and 22 Mbit/s on the uplink with MIMO technologies and higher order modulation. It also introduces an optional all-IP architecture for the network where base stations are directly connected to the internet. The technology also delivers significant battery life improvements and dramatically quicker wake-from-idle time - delivering a true always-on connection. Evolved HSPA should not be confused with LTE, which uses a new air interface.

Several trials are underway and the first commercial launches have been announced for late 2008. On 10 June, 2008 Australia's Telstra Next G network was the first to enable some features of HSPA+. ^[1] On 23 October 2008, the first wireless data devices for the HSPA+ standard were announced. The devices, developed by Sierra Wireless in collaboration with Telstra, Qualcomm, and Ericsson, offer peak download speeds of 21 megabits per second (Mbps) over Telstra’s super-fast Next G™ network – three times faster than currently available HSPA modems. ^[2]

Telecom in New Zealand have also announced its use - ^[3] AT&T Mobility has also hinted at using HSPA+ as a bridge standard prior to launching LTE ^[4].

Evolved HSPA specifies all-IP architecture

An all-IP architecture is an option within Evolved HSPA. Base stations connect to the network via standard gigabit ethernet connected to the internet. This makes the network faster, cheaper to deploy and operate.

However the legacy architecture is still possible with the Evolved HSPA. This 'flat architecture' communicates 'user plane' IP directly from the base station to the GGSN IP router system, using any available link technology. It is defined in 3GPP TR25.999. User IP data bypasses the Radio Network Controller (RNC) and the SGSN of the previous 3GPP UMTS architecture versions. This is a major step towards the 3GPP Long Term Evolution (LTE) flat architecture as defined in the 3GPP standard Rel-8. You could say that the flat architecture makes the base station into an IP router. It connects to the Internet with cost effective modern IP link layer technologies like Ethernet, and for user plane data it is not tied to the SONET/SDH infrastructure or T1/E1 lines anymore.

Internet HSPA or I-HSPA is Nokia Siemens Networks product concept implementing Evolved HSPA. ^[5]

References

1. ^ Ericsson world-first in delivering innovative 3G technology to Telstra - Press Release
2. ^ Sierra Wireless developing world’s fastest mobile broadband device for Telstra’s Next G™ network - Press Release
3. ^ TUANZ praises Telecom's network investment choice
4. ^ "AT&T develops wireless broadband plans". Retrieved on 25 August 2008. 
5. ^ Internet High-Speed Packet Access (I-HSPA), Nokia Siemens Networks

External links

• 3GPP
• Free download of 3GPP standards available at
  • 3GPP Specifications Home Page
  • ETSI GSM UMTS 3GPP Numbering Cross Reference
• Nokia HSPA
• Rohde & Schwarz HSPA+ Technology Introduction and Application Note
• EDGE, HSPA & LTE
• QUALCOMM to Deliver 28 Mbps Mobile Broadband with HSPA+

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