TDM Modem Envelope Scheduling Across Virtual HARQ Slots
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Solution Overview
Problem
Modem processing throughput in wireless communication systems is limited by baseband processing power, particularly in time-division duplexing (TDD) configurations, leading to underutilization of processing resources during uplink slots and limiting data throughput.
Innovation Solution
Implementing time-division multiplexing (TDM) modem envelope enhancements by scheduling multiple transport blocks in a downlink slot and processing them in subsequent non-downlink slots, utilizing 'virtual slots' to maintain a unified hybrid automatic repeat request (HARQ) processing timeline and increase data throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple transport blocks are scheduled in a downlink slot for processing in subsequent non-downlink slots, then data throughput is increased, but processing timeline complexity increases
Solution Approach 1:
The patent segments the processing of multiple transport blocks across different time slots. Instead of processing all blocks in a single slot, the modem divides them into multiple processing stages spanning downlink and non-downlink slots, allowing manageable processing increments while maintaining overall throughput
Solution Approach 2:
The patent introduces a time-dimensioning approach by creating virtual slot assignments. Transport blocks scheduled in downlink slots can be processed in subsequent non-downlink slots, effectively adding a temporal dimension to the processing timeline that resolves the conflict between throughput and complexity
2Productivity
If modem processes downlink signals in every slot, then processing capacity is fully utilized, but power consumption increases
Solution Approach 1:
The patent implements periodic processing patterns where the modem alternates between active downlink processing slots and idle non-downlink slots. This periodic operation allows the modem to process transport blocks only when necessary, reducing overall power consumption while maintaining processing capacity utilization during active periods
Solution Approach 2:
The system allows the modem to automatically utilize idle non-downlink slots for processing accumulated transport blocks without requiring continuous active processing. This self-service mechanism optimizes power usage by letting the modem work during naturally occurring idle periods
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. Some examples of the described techniques provide for time-division multiplexing (TDM) modem envelope enhancements. A user equipment (UE) may receive, from a network entity, a message scheduling a transport block or multiple transport blocks in a downlink slot that immediately precedes one or more non-downlink slots (e.g., uplink (U), special(S), or flexible (F) slots) in a TDD slot configuration. The UE may receive the transport block or the multiple transport blocks in the downlink slot, and may process at least a portion of the transport block or the multiple transport blocks during one or more time intervals that occur after the downlink slot. The transport block may satisfy a per-slot transport block size threshold that is associated with a hybrid automatic repeat request (HARQ) processing timeline.