Diagram Trillium LTE X2AP

LTE X2AP is the control plane protocol between eNodeBs on the X2 interface, it supports load management and handover coordination between eNodeBs. Trillium LTE X2AP is a complete implementation of the protocol layer as defined in the 3GPP TS 36.423 E-UTRA; X2 Application Protocol (X2AP) for the eNodeB network element. The LTE X2 protocol stack is illustrated in the following diagram with the LTE X2AP layer highlighted.

Trillium LTE X2AP software enables Network Equipment Providers of eNodeB’s to:

  • Accelerate time to market
  • Reduce development costs
  • Reduce project risk of internally-developed LTE X2AP applications

Product deliverables consist of C source software, documentation, training, Trillium XML Test Architecture (XTA), Trillium Kernel SCTP Convergence Layer, a warranty, and technical support.

FEATURES + BENEFITS

The features and benefits of Trillium LTE X2AP software are as follows:

  • eNodeB functionality
  • Mobility Management; allows the eNB to move the responsibility of a certain UE to another eNB. Forwarding of user plane data, Status Transfer, and UE Context Release function are parts of the mobility management.
  • Load Management used by eNBs to indicate resource status, overload and traffic load to each other.
  • Reporting of General Error Situations allows reporting of general error situations for which function specific error messages have not been defined.
  • Resetting the X2
  • Setting up the X2 used to exchange necessary data for the eNB for setup the X2 interface and implicitly perform an X2 Reset.
  • eNB Configuration Update allows updating of application-level data needed for two eNBs to interoperate correctly over the X2 interface
  • Pre-integrated with Trillium SCTP and Trillium Kernel SCTP Convergence Layer
  • Completely Multi-threaded stack; part of the Trillium Multi-Core family (Add-On)
  • Comprehensive XML-based test architecture and framework for simplified acceptance and regression test execution.
  • Extensive debugging and error checking facilities
  • Features a minimized memory footprint ideal for femto and pico cell applications.
  • Conforms to Trillium Advanced Portability Architecture (TAPA)
  • Benefits of licensing Trillium Protocol Software

PRODUCT INTERWORKING

The Trillium LTE X2AP software interworks with Trillium SCTP and Trillium Kernel SCTP Convergence Layer.

CONFORMANCE

Trillium LTE X2AP software conforms to:

  • Trillium Advanced Portability Architecture (TAPA)
  • 3GPP TS 36.423 E-UTRA; X2 Application Protocol (X2AP) (Rel-8)
  • 3GPP TS 36.422 E-UTRA; X2 Signaling Transport (Rel-8)
  • 3GPP TS 36.420 E-UTRA; X2 general aspects & principals (Rel-8)
  • 3GPP TS 36.421 E-UTRA; X2 layer 1 (Rel-8)

Contact us for a copy of the Trillium LTE X2AP Functional Specification, which provides a detailed implementation description.