Multi-Channel Scheduling for XR Services via TDRA Table Rows
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently scheduling multi-channel resources for extended reality (XR) services, particularly in managing quasi-periodic traffic with high data rates and strict packet delay budgets.
Innovation Solution
The system employs methods and apparatuses to support multi-channel scheduling by allowing a user equipment (UE) to determine one or two physical downlink shared channel (PDSCH) groups based on time domain resource allocation (TDRA) indications in downlink control information (DCI), and to prioritize and bundle hybrid automatic repeat request acknowledgements (HARQ-ACKs) accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-channel scheduling is implemented for XR services, then system capacity and XR service delivery efficiency are improved, but device complexity and scheduling management complexity increase
Solution Approach 1:
The patent segments the set of PDSCH transmissions into multiple subsets based on TDRA table row indications. Each subset can be independently scheduled and acknowledged, allowing the system to manage complex multi-channel XR traffic by dividing it into smaller, more manageable groups while maintaining overall scheduling efficiency
Solution Approach 2:
The patent introduces a new dimension for scheduling management by using TDRA table row indications to differentiate subsets. This additional scheduling dimension allows the system to handle multiple XR service channels simultaneously without linearly increasing control complexity, as subsets are distinguished through table row references rather than separate control signals
2Adaptability or versatility
If multiple PDSCH subsets are scheduled with different priorities, then traffic differentiation and QoS management are improved, but control signaling overhead increases
Solution Approach 1:
The patent makes the TDRA table structure multi-functional by enabling it to serve both as a resource allocation table and as a priority differentiation mechanism. The same TDRA table row indications that identify resource allocations also implicitly identify subsets with different priorities, eliminating the need for separate priority signaling and reducing overall control overhead
Solution Approach 2:
The scheduling system achieves self-service for priority differentiation by embedding priority information within the existing TDRA table structure. The UE autonomously determines subset priorities based on TDRA row indications without requiring explicit priority signaling from the network, reducing control overhead while maintaining traffic differentiation capability
Data Source
AI summary
Various aspects of the present disclosure relate to a UE that receives control signaling including downlink control information (DCI) scheduling a set of physical downlink shared channel (PDSCH) transmissions, the DCI including an indication of a table row of a time domain resource allocation (TDRA) table, and the table row corresponding to multiple subsets of the set of PDSCH transmissions. The UE receives the set of PDSCH transmissions. The UE can then transmit a respective hybrid automatic repeat request acknowledgement (HARQ-ACK) corresponding to respective one or more of the multiple subsets of the set of PDSCH transmissions.