Configured Grant Uplink Scheduling for Multiple PUSCH Bursts
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Solution Overview
Problem
Existing mobile communication technologies are inadequate for efficiently processing uplink data, particularly for XR and CG applications, due to non-integer XR periods, variable data rates, and quasi-periodic traffic patterns, which are not effectively recognized or processed by current UE, base station, or core network methods.
Innovation Solution
A method for transmitting and receiving uplink data through a configured grant (CG) by identifying uplink grant information based on CG configuration and L1 signaling, allowing for efficient processing of multiple physical uplink shared channels (PUSCHs) within a single CG period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If current UE DRX configuration is used for XR traffic, then device complexity is reduced, but adaptability to non-integer XR periods and variable data rates deteriorates
Solution Approach 1:
The patent implements dynamic DRX configuration where the base station adjusts DRX parameters (such as drx-OnDuration, drx-SlotOffset, and periodicity) based on real-time XR traffic characteristics including non-integer periods and variable data rates. This allows the system to adapt to changing traffic patterns while maintaining manageable device complexity through automated network-side control.
Solution Approach 2:
The patent changes key DRX parameters to match XR traffic characteristics. Specifically, it configures DRX periodicity to align with non-integer XR frame periods, adjusts the OnDuration to accommodate variable data rates, and modifies timing offsets to synchronize with XR packet arrivals. These parameter adjustments enable the system to handle diverse XR traffic patterns effectively.
2Device complexity
If traditional uplink scheduling is used, then device complexity is minimized, but productivity in processing multiple PUSCHs within CG period deteriorates
Solution Approach 1:
The patent implements preliminary configuration of Configured Grant (CG) resources where the base station pre-allocates multiple PUSCH resources within a single CG period before data transmission occurs. This preliminary action eliminates the need for dynamic scheduling requests and grants for each PUSCH, thereby improving uplink productivity while keeping device complexity low as the UE simply follows pre-configured instructions.
Solution Approach 2:
The patent enables self-service uplink transmission where the UE autonomously transmits multiple PUSCHs within the CG period using pre-configured resources without requiring continuous network intervention. The UE independently manages transmission timing, resource selection, and power control based on the initial CG configuration, thereby enhancing productivity while minimizing scheduling complexity.
3Device complexity
If standard packet processing is used, then device complexity is reduced, but reliability for XR packets with dependency relationships deteriorates
Solution Approach 1:
The patent segments XR packet processing by introducing specific identification mechanisms that distinguish XR packets from standard packets. The base station configures specific RNTI values and DCI formats for XR traffic, and the UE implements separate processing logic for identified XR packets. This segmentation enables reliable handling of dependent XR packets while keeping standard packet processing unchanged and simple.
Solution Approach 2:
The patent introduces an intermediary identification layer between standard packet processing and XR-specific handling. Through configurable RNTI values, DCI indicators, and MAC CE messages, the system creates an intermediary mechanism that marks XR packets requiring special processing. This intermediary approach ensures reliable transmission of dependent XR packets without complicating the overall packet processing architecture.
Data Source
AI summary
Provided are a method and apparatus for uplink transmission and reception through a configured grant (CG). The method for transmitting uplink data may include receiving, from a base station, configured grant (CG) configuration information for transmitting a plurality of physical uplink shared channels (PUSCH) within a single CG period, checking uplink grant information on at least one of the CG configuration information and L1 signaling; and transmitting a plurality of PUSCHs within a single CG period based on the uplink grant information.