S1AP Insights | Sumble

What is S1AP?

S1AP (S1 Application Protocol) is the signaling protocol used in the Evolved Packet System (EPS) for communication between the Evolved Node B (eNodeB), which is the base station in LTE, and the Mobility Management Entity (MME) in the core network. It handles various functions such as establishing and releasing radio bearers, handover procedures, and the transfer of NAS (Non-Access Stratum) signaling messages between the UE (User Equipment) and the MME. It's crucial for managing mobility and session continuity in LTE networks.

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What other technologies are related to S1AP?

S1AP Competitor Technologies

5G

5G is the next generation mobile network technology. While S1AP is specific to LTE, 5G uses different protocols and a new architecture. The protocols like NGAP are used instead of S1AP.

mentioned alongside S1AP in 0% (63) of relevant job posts

S1AP Complementary Technologies

X2AP

X2AP is a protocol used for communication between eNodeBs (base stations) in LTE networks. It complements S1AP, which is used for communication between eNodeBs and the core network.

mentioned alongside S1AP in 84% (67) of relevant job posts

GTP

GTP (GPRS Tunneling Protocol) is used for carrying user data and control information within the GPRS core network. It's often used alongside S1AP, especially GTP-U for user plane data.

mentioned alongside S1AP in 7% (83) of relevant job posts

RRC

RRC (Radio Resource Control) is a protocol used for managing the radio connection between the UE (User Equipment) and the eNodeB. While S1AP concerns communication *to* the core network, RRC handles aspects of radio communication *with* the UE, making it complementary.

mentioned alongside S1AP in 7% (80) of relevant job posts