5G • RAN
Configured Grant Type 1
Type 1 Configured Uplink Grant
Uplink transmission resource fully pre-configured by RRC, allowing immediate PUSCH transmission without DCI.
Technical Explanation
Configured Grant Type 1 provides pre-allocated periodic uplink PUSCH resources configured entirely via RRC signaling (periodicity, time/frequency allocation, MCS). The UE transmits immediately on these resources whenever data is buffered without waiting for a scheduling request or DCI grant, cutting uplink latency to under 1 ms for URLLC.
Key Functions
- Fully provisioned via dedicated RRC signaling without dynamic DCI activation
- Enables zero-grant instant uplink transmission for URLLC data
- Saves control channel overhead for deterministic industrial traffic
Specifications
3GPP TS 38.214, TS 38.321
Interfaces
Uu
Related 5G Concepts
Want to memorize 5G concepts like this one?
Study it with SuperMemo SM-2 spaced repetition flashcards.