Multi-Panel PUSCH Transmission via Dynamic SRS Resource Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face limitations in communication flexibility and efficiency, particularly in the transmission of physical uplink shared channel (PUSCH) signals, which affect the reliability and latency of uplink control information.
Innovation Solution
The implementation of user equipment (UE) and base station apparatuses with higher layer circuitry to configure multiple sounding reference signal (SRS) resource sets and slot offsets for aperiodic SRS transmission, using downlink control information (DCI) carried by a physical downlink control channel (PDCCH) to manage SRS resource sets and slot offsets, enabling flexible and efficient PUSCH communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple SRS resource sets and slot offsets are configured for aperiodic SRS transmission, then communication flexibility and efficiency are improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic SRS resource selection where the UE can be configured with multiple SRS resource sets and slot offsets, and dynamically select appropriate resources based on DCI indications. This allows the system to adapt communication parameters in real-time, improving flexibility while managing complexity through standardized selection procedures.
Solution Approach 2:
The patent segments SRS resources into multiple resource sets with different configurations (slot offsets, frequencies, etc.). This segmentation allows independent configuration and selection of different resource sets for different transmission scenarios, enabling flexible adaptation without requiring complete reconfiguration of all resources.
2Reliability
If multiple SRS resource sets and slot offsets are configured for aperiodic SRS transmission, then uplink control information transmission reliability is improved, but device complexity increases
Solution Approach 1:
The patent changes key transmission parameters (slot offsets, resource sets) dynamically based on DCI indications rather than using fixed configurations. This allows the system to optimize transmission reliability by selecting appropriate parameters for different channel conditions and traffic types, while maintaining manageable complexity through parameter-based control.
Solution Approach 2:
The patent performs preliminary configuration of multiple SRS resource sets and slot offsets before actual transmission. This preliminary setup enables rapid selection and switching during transmission without real-time computation, improving reliability through pre-validated configurations while reducing runtime complexity.
3Loss of time
If multiple SRS resource sets and slot offsets are configured for aperiodic SRS transmission, then latency is reduced, but device complexity increases
Solution Approach 1:
The patent pre-configures multiple SRS resource sets with different slot offsets before transmission is needed. When uplink data arrives, the UE can immediately select from pre-configured resources based on DCI indication, avoiding time-consuming resource allocation procedures and reducing latency while managing complexity through offline configuration.
Solution Approach 2:
The patent enables dynamic selection of slot offsets from pre-configured options based on traffic urgency and channel conditions. This dynamic adaptation allows the system to choose minimal offsets for urgent traffic (reducing latency) while maintaining standardized selection rules that prevent complexity from becoming unmanageable.
Data Source
AI summary
A user equipment (UE) is described. Higher layer circuitry is configured to receive information to configure more than one sounding reference signal (SRS) resource set for aperiodic SRS transmission. Medium access control (MAC) circuitry is configured to receive a MAC control element (MAC CE) to activate one or more of the SRS resource sets. Receiving circuitry is configured to receive downlink control information (DCI) carried by a physical downlink control channel (PDCCH). Transmitting circuitry is configured to transmit an SRS. A configuration of each of the configured SRS resource sets includes a slot offset for the aperiodic SRS transmission. An SRS request field in the DCI indicates one from the activated SRS resource set. The transmitting circuitry transmits the SRS based on the indicated SRS resource set and the slot offset included in the indicated SRS resource set.