Sidelink Configured Grants With Multiple TB Transmission Occasions
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Solution Overview
Problem
Current wireless communication systems lack options for high-throughput sidelink (SL) transmissions, particularly in scenarios requiring large and varying bandwidths for sensor data and real-time video frames, as existing configured grant (CG) solutions only allow for a maximum of one transmission block (TB) per period, limiting capacity and flexibility.
Innovation Solution
Implementing sidelink communications with multiple transmission occasions (TOs) for multiple TBs within a CG period, allowing for flexible resource selection and utilization, and incorporating physical uplink control channel (PUCCH) resources for hybrid automatic repeat request (HARQ) feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If configured grant (CG) solutions are used for sidelink transmissions, then scheduling latency is reduced, but transmission capacity is limited to a maximum of one TB per period
Solution Approach 1:
The patent segments the transmission period into multiple transmission occasions (TOs), allowing multiple TBs to be transmitted within a single CG period. Each TO can carry different TBs, effectively dividing the transmission task into smaller time slots while maintaining the low-latency benefit of configured grants.
Solution Approach 2:
The patent introduces dynamic resource selection where the UE can flexibly choose which resources to use for transmitting multiple TBs. The network node can dynamically adjust the number of TBs and their corresponding resources based on current traffic conditions, making the system adaptable to varying throughput requirements.
2Productivity
If multiple TBs are transmitted within a CG period, then transmission capacity increases, but resource selection flexibility is reduced
Solution Approach 1:
The patent implements dynamic resource selection where the UE can flexibly choose which resources to use for transmitting multiple TBs. The network node can dynamically adjust the number of TBs and their corresponding resources based on current traffic conditions, making the system adaptable to varying throughput requirements.
Solution Approach 2:
The patent allows changing the number of TBs transmitted within a CG period based on actual traffic needs. The system can adjust parameters such as the number of transmission occasions and the size of each TB to optimize both capacity and flexibility according to current conditions.
3Productivity
If multiple TBs are transmitted within a CG period, then transmission capacity increases, but system complexity increases
Solution Approach 1:
The patent segments the transmission period into multiple transmission occasions (TOs), allowing multiple TBs to be transmitted within a single CG period. Each TO can carry different TBs, effectively dividing the transmission task into smaller time slots while maintaining the low-latency benefit of configured grants.
Solution Approach 2:
The patent incorporates HARQ feedback mechanisms where the receiving UE provides feedback on the successfully received TBs. This feedback loop allows the transmitting UE to adjust subsequent transmissions, reducing the need for complex retransmission handling and simplifying the overall system operation.
Data Source
AI summary
Increased sidelink transmission capacity is described. An apparatus is configured to identify a number of TBs to be transmitted, to a SL UE, during a period of a grant associated with a set of transmission occasions. The apparatus is configured to receive, from a network node, a PSSCH configuration indicative of the grant associated with the set of transmission occasions for one or more TBs over a set of resources of the PSSCH during the period of the grant. The apparatus is configured to transmit, via the PSSCH for the SL UE, the one or more TBs during the period of the grant in accordance with the PSSCH configuration.