Downlink

Dynamic Resource Allocator

DRA runs as a channel-by-channel allocation. There are three global stop and go points:

1. After BBRH,
2. after Distributor,
3. after PUCCH BBRH executes (singleton)

• Distributes resources based on estimate (waveform, distributor, etc)
• Updates draCtrlTps with assigned resources
• Budget is 60usec

Distributors execute in parallel

• Budget is ~10usec
• Last distributor launches PUCCH

PUCCH executes in parallel

• Each walks through distributor output list looking for CA SRs
• PUCCH allocates draCtrlTmpData Last PUCCH launches PDCCH Budget is 85usec

PDCCH

• Allocates channel
• Each PDCCH executes fully independently attaches bbrhData along with the SR list
• Triggers PDSCH for corresponding cell when complete
• Budget is 75usec

PDSCH

• Allocate PDSCH channel SR by SR (feeder chain generated in pipeline)
• Notifies draCtrl (PUCCH/PDCCH) of successful/failed allocations
• Notifies RRP, EMF and BBRHSlow
• Budget is 160usec