US : Kineto Wireless announced today its full support for the 3GPP agreement reached last week on the Home NodeB (HNB) architecture for femtocell-to-core network connectivity. Recognizing that a standard is needed for the mass-market success of femtocells, Kineto took a lead role in developing consensus among the contributing companies. Having an agreed architecture marks a major milestone towards the completion of a global 3G femtocell standard.

“Developing an industry-wide standard requires a tremendous amount of cooperation between vendors and operators, with all parties contributing their knowledge and experience to develop the best possible solution,” said Patrick Tao, Kineto’s vice president of technology. “The femtocell standardization effort within 3GPP provides a great example of such cooperation, with the agreed architecture merging key attributes of the 3GPP UMA/GAN-based approach proposed by Kineto with other companies’ proposals to create an optimized architecture capable of supporting mass-market femtocell deployments.”

The agreed 3GPP HNB architecture follows an access network-based approach, leveraging the existing Iu-cs and Iu-ps interfaces into the core service network. The architecture defines two new network elements, the HNB (a.k.a. Femtocell) and the HNB Gateway (a.k.a. Femto Gateway). Between these elements is the new Iu-h interface.

• Home NodeB (HNB) – Connected to an existing residential broadband service, an HNB provides radio coverage for standard 3G handsets within a home. HNBs incorporate the capabilities of a standard NodeB as well as the radio resource management functions of a standard Radio Network Controller (RNC).
• HNB Gateway (HNB-GW): Installed within an operator’s network, the HNB Gateway aggregates traffic from a large number of HNBs back into an existing core service network through the standard Iu-cs and Iu-ps interfaces.
• Iu-h Interface: Residing between an HNB and an HNB-GW, the Iu-h interface includes a new HNB application protocol (HNBAP) for enabling highly-scalable, ad-hoc HNB deployment. The interface also introduces an efficient, scalable method for transporting Iu control signaling over the Internet.

With an agreement on an underlying femtocell architecture, 3GPP has now transitioned to the phase of developing detailed specifications. This work is targeted for completion by the end of 2008.

For more information about the 3GPP HNB architecture, visit http://www.kinetowireless.com/solutions/hnb.html.