UE Search Space Priority for Reliable PDCCH Reception
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Solution Overview
Problem
Existing wireless communication systems face challenges in effectively determining priority for downlink control information reception, particularly in high-frequency bands like mmWave and terahertz bands, which are crucial for next-generation mobile communication technologies such as 5G and 6G, due to complex beamforming and resource management requirements.
Innovation Solution
A method and apparatus for a UE to receive radio resource control messages, identify search spaces, and prioritize monitoring physical downlink control channels by processing control signals and transmitting feedback to the base station, optimizing resource utilization and beam management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE monitors all configured search spaces for downlink control information, then the reliability of control information reception is improved, but the processing complexity and power consumption increase
Solution Approach 1:
The patent segments search spaces into different priority levels (first priority and second priority). The UE divides monitoring efforts by first identifying and processing high-priority search spaces associated with first priority control resource sets, then handling lower-priority search spaces. This segmentation allows the UE to maintain reliability by monitoring all search spaces while reducing processing complexity through prioritized handling.
2Reliability
If the UE monitors all configured search spaces for downlink control information, then the reliability of control information reception is improved, but the power consumption increases
Solution Approach 1:
The patent segments search spaces into different priority levels (first priority and second priority). The UE divides monitoring efforts by first identifying and processing high-priority search spaces associated with first priority control resource sets, then handling lower-priority search spaces. This segmentation allows the UE to maintain reliability by monitoring all search spaces while reducing processing complexity through prioritized handling.
3Loss of time
If the UE prioritizes monitoring of specific search spaces, then the latency is reduced, but the reliability of control information reception may deteriorate
Solution Approach 1:
The patent segments search spaces into different priority levels (first priority and second priority). The UE divides monitoring efforts by first identifying and processing high-priority search spaces associated with first priority control resource sets, then handling lower-priority search spaces. This segmentation allows the UE to maintain reliability by monitoring all search spaces while reducing processing complexity through prioritized handling.
Solution Approach 2:
The patent implements preliminary action by first identifying the first priority control resource set and its associated search spaces before processing other search spaces. The UE preliminarily determines which search spaces require immediate attention based on priority levels, allowing it to process critical control information first while still maintaining the ability to monitor all configured search spaces for complete reliability.
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. the disclosure provides a method performed by at terminal in a wireless communication system, the method comprises receiving, from a base station, a RRC message including configuration information on a plurality of search spaces (SSs), identifying a first CORESET corresponding to a first SS with lowest index among the plurality of SSs, identifying one or more SSs by excluding one or more first SSs associated with the first CORESET from the plurality of SSs, identifying at least one SS linked with one of the one or more first SSs among the one or more SSs, identifying a second CORESET corresponding to a second SS with lowest index among the at least one SS, and monitoring PDCCHs in overlapping PDCCH monitoring occasions in the first CORESET and the second CORESET.