What is S1 Application Protocol?
The S1 Application Protocol (S1AP) provides the control plane signalling between E-UTRAN and evolved packet core (EPC). The used interface is S1-MME which is located between eNB and MME. The services provided by the S1AP are divided to UE associated and non UE associated. The S1AP protocol is defined in TS 36.413.
What is Gx interface?
The term Gx interface (or simply Gx) is used to refer to the implementation of the Gx reference point on the node. Gx reference points are defined in the 3GPP 29.212 document. The Enhanced Subscriber Management (ESM) subscriber is a host or a collection of hosts instantiated on the Broadband Network Gateway.
What is NAS protocol?
Non-access stratum (NAS) is a functional layer in the UMTS and LTE wireless telecom protocol stacks between the core network and user equipment. Examples of NAS messages include Update or Attach messages, Authentication Messages, Service Requests and so forth.
What is the difference between Gx and Gy interface?
The PGW (Packet Data Gateway) enforces the QoS rules received from PCRF and monitors usage and status. The Sy references the interface between PCRF and the OCS. The Gy reference the interface between a PGW and an OCS. Gx references the interface between PCRF and PGW/PCEF .
What is S1AP S1-MME?
The used interface is S1-MME which is located between eNB and MME. The services provided by the S1AP are divided to UE associated and non UE associated. The UE associated services are related to one UE and the non UE associated services are related to the whole S1-MME interface.
What is the LTE S1-MME interface?
The LTE S1-MME interface is responsible for delivering signaling protocols between the eNodeB and the MME. S1-MME interface consists of a Stream Control Transmission Protocol (SCTP) over IP and supports multiple UEs through a single SCTP association. It also provides guaranteed data delivery.
What is S1 application protocol (S1AP)?
The S1 Application Protocol (S1AP) provides the control plane signalling between E-UTRAN and evolved packet core (EPC). The used interface is S1-MME which is located between eNB and MME. The services provided by the S1AP are divided to UE associated and non UE associated.
What is S11 interface in Mme?
S11 Interface 1 From the other side, the MME connects to the SGW using S11 interface. 2 S11 Interface uses GTP-C protocol. 3 GTP-C protocol supports the exchange of signaling messages between nodes, by creating a GTP tunnel between the nodes. 4 The signaling messages will move between the nodes into this GTP tunnel.