Base Station

Access control: support access security and checking of contracted data;

Mobility management: attachment/de-attachment, TAU within E-UTRAN system, TA List management, switching based on X2/S1 interface, support for Purge and service request, UE reachability process;

Session management: bearer creation, modification, and deletion;

NAS security: supports encryption/decryption and integrity protection of NAS layer;

User IP address management: supporting static and dynamic allocation of user IP addresses;

QOS control: supports the function of allowing high-priority users to access when resources are insufficient during the process of bearer establishment and modification;

Cluster voice service: including full-duplex voice single call and voice group call;

Cluster multimedia services: including visual single call, homologous video group call, video push group, video pull-up, return, video push single UE;

Cluster data services: including real-time short data, multicast short message, broadcast short message, and status data;

Cluster supplementary services: including emergency call, multicast call, dynamic reorganization, shake stun \ shake death \ resurrection, forced insertion \ forced removal, console subscription and other functions.