LTE Stream Control Transmission Protocol – LTE SCTP

The Stream Control Transmission Protocol (SCTP) is the de-facto transport protocol for multiple IP-based signaling protocols. In the context of the LTE eNodeB, it is used to provide guaranteed message delivery between the MME and the eNodeB.

Aricent's LTE SCTP Architecture Diagram

Standard Features

  • Association management
  • Multi-streaming and sequencing within streams
  • User data fragmentation
  • Acknowledgement and congestion avoidance
  • Chunk bundling
  • Support for CRC-32 and Adler-32 algorithms
  • Path management
  • Path MTU discovery
  • Multi-homing support

Additional Value Added Features

  • Init time selection of checksum and NAT capability
  • Dynamic addition/deletion of IP addresses to the stack list
  • MT-Safe Support on per association basis
  • Hostname resolution support
  • Support for partial retrieval of user messages
  • Support for function-based, message-based and socket- based interface between SCTP and User Application
  • IPV6 support
  • Simultaneous client and server on the same transport address

Compliance

Aricent's LTE SCTP software conforms to IETF RFC 4960.