Configured Grant PUSCH Timing for Multiple CG Configurations
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing and optimizing configured grant (CG) physical uplink shared channel (PUSCH) transmissions, particularly in adjusting transmission timing and supporting multiple CG configurations, which affects resource utilization and performance in advanced mobile communication systems.
Innovation Solution
A method and apparatus for adjusting the transmission timing of CG PUSCH by receiving and transmitting uplink control information (UCI) to determine resource allocation for CG configurations, allowing for optimized resource allocation and efficient operation of CG resources, especially in supporting extended reality (XR) operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If transmission timing of CG PUSCH is adjusted for multiple CG configurations, then resource allocation efficiency is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic adjustment of transmission timing for CG PUSCH by introducing a timing adjustment field in DCI format 0_1 or 0_2. This allows the base station to dynamically modify the timing offset (k values) for different CG configurations based on current network conditions, transforming static timing into dynamic adjustable parameters. The UE applies these dynamic timing adjustments to determine transmission occasions for multiple CG configurations, resolving the contradiction by enabling flexible resource allocation without permanently increasing device complexity.
2Productivity
If multiple CG configurations are supported with optimized resource allocation, then productivity increases, but device complexity increases
Solution Approach 1:
The patent segments the resource allocation process by introducing separate timing adjustment parameters (k1, k2, k3 values) for different CG configurations. Each CG configuration can be independently adjusted with its own timing offset, allowing the system to manage multiple configurations efficiently. This segmentation enables the UE to handle multiple CG configurations with distinct timing relationships to the DCI reception, improving productivity while maintaining manageable device complexity through structured parameter separation.
Solution Approach 2:
The patent utilizes parameter changes by modifying the timing offset parameters (k values) in the DCI format to control transmission timing for different CG configurations. The base station can adjust these parameters dynamically based on network conditions, traffic patterns, and resource availability. This parameter-based control mechanism enables efficient management of multiple CG configurations without requiring complex structural changes to the device architecture.
3Loss of time
If transmission timing is quickly adjusted for XR operations, then loss of time is reduced, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple CG configurations with specific periodicities and timing relationships before XR operations begin. The timing adjustment parameters are prepared in advance in the DCI format, allowing the UE to quickly determine transmission occasions without complex real-time calculations. This preliminary setup reduces transmission delay for XR operations while keeping device complexity manageable through pre-computed timing parameters.
Data Source
AI summary
Disclosed are a method and device for transmitting and receiving a configured grant PUSCH in a wireless communication system. A method according to an embodiment disclosed herein may comprise the steps of: receiving individual pieces of configuration information related to one or more CG configurations from a base station; transmitting UCI to the base station, wherein the UCI includes information related to the resource on which the next CG PUSCH transmission is to occur for the one or more CG configurations, and the CG PUSCH transmission for the one or more CG configurations is not performed prior to the resource determined by the information related to the resource on which the next CG PUSCH transmission is to occur; and transmitting the CG PUSCH for the one or more CG configurations to the base station, the CG PUSCH being transmitted on the resource determined by the information related to the resource on which the next CG PUSCH transmission is to occur.