5G • RAN
BSD
Bucket Size Duration
Token bucket ceiling parameter determining maximum data burst volume allowed for a logical channel during LCP.
Technical Explanation
Bucket Size Duration (BSD) is an RRC parameter (e.g. 5ms, 10ms, 20ms, 50ms, 100ms). The maximum token accumulation for a logical channel is bounded by PBR * BSD. This limits the burst size a single channel can consume in one grant, preventing traffic spikes from monopolizing the uplink link.
Key Functions
- Limits maximum token bucket capacity to PBR * BSD
- Controls maximum burst volume permitted per logical channel in single grant
- Configured in RRC LogicalChannelConfig IE
Specifications
3GPP TS 38.321, TS 38.331
Interfaces
Uu
Related 5G Concepts
Want to memorize 5G concepts like this one?
Study it with SuperMemo SM-2 spaced repetition flashcards.