Umts user and_control_plane
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The document discusses the user and control planes in the UMTS protocol stack. The control plane carries all signaling information between the mobile device and network using control channels and contains the RRC layer. The user plane is responsible for transferring user data like voice and applications and contains the BMC and PDCP layers, while the MAC and RLC layers exist in both planes.
Umts user and_control_plane
- 1. User & Control Plane UMTS Protocol Stack is categorized into two vertical planes; the control (Signalling) and user (Data) planes. The MAC and RLC layers exist in both the Control and User planes. The RRC is present in the Control plane. However BMC and PDCP are present only in the U-plane Control Plane: The control plane is used to carry all signaling information between the mobile (UE) and the Network (NW). It is thus also referred to as a signaling plane. Control Channels are used for signaling information of the control planes User Plane: The User or data plane is responsible for the transfer of user data, such as voice or application data. User & Control Planes in UMTS Protocol Stack CC SMS SS GSMS SM MM GMM RRC User Plane Data Protocols (PPP, IP, etc) BMC Data Protocols PDCP Data Protocols RLC MAC PHY Control Plane Data Protocols User & Control Data Protocols Legend Data ProtocolsUser Plane Data Protocols Non Access Stratum Access Stratum