6.5.3 Service Primitives
03.643GPPGeneral Packet Radio Service (GPRS)Overall description of the GPRS radio interfaceStage 2TS
Table 2 lists the service primitives provided by the Physical Link layer to RLC/MAC layer. More detailed description is given in GSM 04.04 [4].
Table 2: Service primitives provided by the Physical link layer
Name | Request | indication | response | confirm | Comments |
PH-DATA | X | X | Used to pass message units containing frames used for RLC/MAC layer respective peer‑to‑peer communications to and from the physical layer. | ||
PH-RANDOM ACCESS | X | X | X | Used to request and confirm (in the MS) the sending of a random access frame and to indicate (in the network) the arrival of a random access frame. | |
PH-CONNECT | X | Used to indicate that the physical connection on the packet data physical channel has been established. | |||
PH-READY-TO-SEND | X | Used by the physical layer to trigger, if applicable, piggy backing, the start of timer for the RLC/MAC layer and the forwarding a data unit to the physical layer | |||
PH-EMPTY-FRAME | X | Used by the RLC/MAC layer to indicate that no frame has to be transmitted after receiving the PH‑READY‑TO‑SEND primitive |