Wake-Up Signal CORESET Adaptation for PDSCH Rate Matching
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in resource utilization due to limited channel capacity and inefficient rate matching around control resource sets (CORESET), which inhibits the effective use of available resources for data transmission.
Innovation Solution
Implementing a wake-up signal (WUS) based approach to indicate which parts of the CORESET are active or inactive, allowing UEs to selectively monitor or skip monitoring these parts, thereby optimizing resource usage and enhancing PDSCH rate matching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UEs monitor all control resource set parts continuously, then control information reception reliability is maintained, but power consumption increases and resource efficiency decreases
Solution Approach 1:
The patent applies dynamics by making the CORESET monitoring behavior adaptive rather than static. The UE dynamically adjusts its monitoring of different CORESET parts based on wake-up signals received before each monitoring occasion. When a wake-up signal indicates certain CORESET parts are inactive, the UE skips monitoring those parts, thereby reducing power consumption while maintaining reliable reception of control information in active parts.
Solution Approach 2:
The patent segments the control resource set into multiple independently monitorable parts. Each CORESET part can be independently activated or deactivated via wake-up signals, allowing the UE to selectively monitor only the necessary segments. This segmentation enables granular power saving while preserving control information reception reliability in active segments.
2Reliability
If UEs monitor all control resource set parts, then control information is reliably received, but channel capacity is wasted due to unnecessary monitoring of inactive parts
Solution Approach 1:
The system dynamically adapts CORESET monitoring based on wake-up signals that indicate which parts are active. This dynamic approach ensures that channel capacity is not wasted on monitoring inactive CORESET parts while maintaining reliable control information reception in active parts, thereby improving overall channel capacity utilization.
Solution Approach 2:
Instead of monitoring all CORESET parts (excessive action), the UE performs partial monitoring only of active parts indicated by wake-up signals. This partial action eliminates unnecessary monitoring of inactive parts, freeing up channel capacity for data transmissions while maintaining sufficient control information reception reliability.
3Productivity
If the control resource set is divided into multiple parts for selective monitoring, then resource efficiency improves, but system complexity increases due to additional configuration and signal processing
Solution Approach 1:
The CORESET is segmented into multiple parts with independent monitoring capabilities. Each part can be independently configured and controlled via wake-up signals, enabling fine-grained resource efficiency optimization. The segmentation is managed through standardized signaling mechanisms that balance the complexity of selective monitoring with the benefits of improved resource utilization.
4Productivity
If wake-up signals are used to indicate active CORESET parts, then monitoring overhead is reduced, but additional signaling resources are consumed
Solution Approach 1:
Wake-up signals serve as intermediary indicators that convey activation status of different CORESET parts before monitoring occasions. These signals act as a mediator between the network's scheduling decisions and the UE's monitoring behavior, enabling reduced monitoring overhead while consuming minimal signaling resources through efficient binary indication mechanisms.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A network entity may provide an indication of which parts of a control resource set (CORESET) may be utilized for control information, and which parts may be utilized for data transmissions. For example, a network entity may communicate configuration information indicating multiple parts of a CORESET resource set to a user equipment (UE), along with an indication to monitor for a wake-up signal (WUS). During a wakeup occasion, the network entity may transmit a WUS to the UE. The WUS may indicate to the UE whether one or more of the parts of the CORESET may be active and may thus be utilized for the communication of control information. In response to receiving the WUS, the UE may monitor for a transmission of control information, data information, or a combination thereof, from the network entity.