The Iuh protocol stacks support the interface between the Home NodeB (Femtocell Access Point) and Home NodeB Gateway (Femtocell Gateway) in the 3GPP femtocell standards. Iuh re-uses standard protocols from the 3GPP-defined UMTS standards like RANAP and GTP-u while introducing some new protocols to meet the specific requirements of 3G femtocell deployments. The protocol stacks that support the Iuh reference point are highlighted in the following diagram.

Diagram Trillium Iuh 3G Femtocell

The UTRAN functions in the Home NodeB (HNB) are supported by RANAP while the HNB-specific functions are supported by a new protocol, Home NodeB Application Part (HNBAP).

UTRAN functions include:

  • Radio Access Bearer (RAB) management
  • Radio Resource Management (RRM)
  • Iu link management
  • Iu U-plane (RNL) management
  • Mobility management
  • Security
  • Service and network access
  • Iu coordination

HBN specific functions include:

  • HNB registration management
  • UE registration for HNB
  • Iuh user-plane management

The new protocols introduced by the 3GPP Home NodeB standards are RANAP User Adaptation (RUA) layer and HNBAP. These products seamlessly interwork with existing Trillium 3G Wireless stacks like RANAP, SCTP, IuUP, GTP-u, and RTP.

RUA FEATURES + BENEFITS

  • Support for both the HNB and HNB GW
  • Transparent transfer of RANAP messages
  • Error handling
  • Support for Connect, Direct Transfer, Disconnect, Connectionless Transfer, and Error Indication Elementary Procedures (EP)
  • Seamless upgrade for existing Trillium Femtocell customers
  • Pre-integrated and delivered with Trillium Kernel SCTP Convergence Layer (KSCTP CL)
  • Support for Trillium SCTP (user space) and Trillium RANAP for ease of integration
  • Comprehensive test architecture and framework for simplified acceptance and regression test execution.
  • Conforms to Trillium Advanced Portability Architecture (TAPA)
  • Features a minimized memory footprint ideal for femtocell applications.
  • Benefits of licensing Trillium Protocol Software

HNBAP Features + Benefits

  • Support for both the HNB and HNB GW
  • HNB registration
  • UE registration
  • Pre-integrated and delivered with Trillium Kernel SCTP Convergence Layer (KSCTP CL)
  • Support for Trillium SCTP (user space)
  • Comprehensive test architecture and framework for simplified acceptance and regression test execution.
  • Conforms to Trillium Advanced Portability Architecture (TAPA)
  • Features a minimized memory footprint ideal for femtocell applications
  • Benefits of licensing Trillium Protocol Software

PRODUCT INTERWORKING

The Trillium RUA and Trillium HNBAP software work with RANAP, SCTP, IuUP, GTP-u, and RTP to formulate the Iuh interface protocol stacks. In addition, the Iuh protocol stacks are part of the Trillium Femtocell Access Point reference implementation.

CONFORMANCE

Trillium Iuh protocols conform to:

  • Trillium Advanced Portability Architecture (TAPA)
  • 3GPP TS 25.467 UTRAN architecture for 3G Home NodeB (Rel-8)
  • 3GPP TS 25.468 UTRAN Iuh interface RANAP User Adaptation (RUA) signaling (Rel-8)
  • 3GPP TS 25.469 UTRAN Iuh interface Home NodeB Application Part (HNBAP) signaling (Rel-8)