S1AP Software

S1 Application Part (S1AP) is the control plane signaling protocol between the eNodeB and the Mobility Management Entity (MME).

Trillium LTE S1AP is a standards-based implementation of the S1AP. It supports the S1-MME interface and utilizes SCTP in the transport layer. SCTP is for the control plane, which guarantees delivery of signaling messages between the MME and eNodeB.

The functionality of S1AP is as follows:

  • Manage the SAE Bearer
  • Transfer initial context
  • Provide mobility functions for UE
  • Provide paging
  • Provide reset
  • Transport NAS signaling
  • Report errors
  • Provide UE context release
  • Transfer status

Trillium LTE S1AP enables network equipment providers of LTE infrastructure – such as eNodeB’s, MME / Serving Gateways, Femtocells, test equipment, or other products – to:

  • Accelerate time to market
  • Reduce development costs
  • Reduce project risk of internally developed S1AP applications

Additional Specifications

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