Configured Grant PUSCH Association for Multi-TRP Uplink Scheduling
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Solution Overview
Problem
In wireless communication systems with multiple transmission-reception points (TRPs), the association between Physical Uplink Shared Channel (PUSCH) transmissions with configured grant and TRPs is undefined, leading to challenges in scheduling order and collision handling in multi-DCI based multi-TRP scenarios.
Innovation Solution
The proposed solution involves associating PUSCH transmissions with configured grant (CG) to specific TRPs using TRP-related parameters like CORESETPoolIndex, defining scheduling orders among multiple PUSCHs, and prioritizing CG PUSCH over dynamic grant (DG) PUSCH to enhance support for CG PUSCH transmission in multi-DCI based multi-TRP scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple TRPs are deployed to improve uplink transmission reliability, then the coverage and robustness of uplink communication are enhanced, but the complexity of scheduling and collision handling between multiple PUSCH transmissions increases
Solution Approach 1:
The patent segments the multi-TRP uplink transmission system by introducing a dedicated CORESETPoolIndex parameter that associates each PUSCH transmission with a specific TRP. This segmentation allows independent scheduling and collision handling for each TRP's PUSCH transmissions, reducing the overall scheduling complexity while maintaining reliability benefits from multiple TRPs
Solution Approach 2:
The patent introduces CORESETPoolIndex as an intermediary parameter that mediates between multiple TRPs and the scheduling system. This intermediary enables clear identification and association of PUSCH transmissions with specific TRPs, facilitating simplified collision detection and resolution mechanisms in multi-TRP scenarios
2Speed
If configured grant PUSCH transmission is enabled to reduce latency, then uplink transmission speed is improved, but collision handling with dynamic grant PUSCH becomes more complex
Solution Approach 1:
The patent changes the parameter space by introducing CORESETPoolIndex specifically for configured grant PUSCH transmissions. This parameter differentiation enables the system to handle configured grant and dynamic grant PUSCH collisions through distinct scheduling rules, reducing the complexity of collision handling while maintaining high transmission speed benefits
3Productivity
If TRP association for PUSCH is defined to improve scheduling efficiency, then resource allocation precision is enhanced, but the configuration overhead increases
Solution Approach 1:
The patent makes CORESETPoolIndex a universal parameter that serves multiple functions: it identifies TRP associations for PUSCH transmissions, enables collision detection between different TRPs, and facilitates scheduling decisions. This multi-functionality reduces configuration overhead compared to introducing separate parameters for each function
Data Source
AI summary
Disclosed are a transmitter, a receiver and a communication method for improving uplink transmission in a communication system with configured grant, particularly in multiple transmission-reception point (multi-TRP)/panel scenario. The transmitter includes a circuitry configured to: receive a configured grant (CG) configuration used to configure a type of CG for a PUSCH transmission; and transmit the PUSCH transmission with the CG, wherein the CG PUSCH transmission is associated with one of the multi-TRPs for an active uplink Bandwidth Part (BWP) of a serving cell. The support for CG PUSCH transmission in multi-TRP/panel scenario is greatly enhanced.