ULCI Control Channel Resource Mapping for Faster UE Decoding
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Solution Overview
Problem
In wireless communications systems, user equipment (UE) struggles to identify the correct control channel resource candidate for uplink cancellation indications (ULCI) within a set of candidates, leading to increased latency and reduced reliability due to insufficient processing time for high-priority uplink cancellations.
Innovation Solution
The UE is configured to identify a specific control channel resource candidate for ULCI by setting it to a particular location within a search space and control resource set, differentiated from other candidates through radio network temporary identifiers, enabling prioritized decoding of ULCI over other control channel candidates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE monitors all control channel resource candidates in the set, then the probability of receiving ULCI is improved, but the processing time and complexity increase
Solution Approach 1:
The patent extracts the ULCI monitoring function from the general control channel monitoring by dedicating a specific control resource set (CORESET) and search space exclusively for ULCI. This allows the UE to focus monitoring efforts on a predetermined, restricted set of candidates rather than all possible candidates, reducing processing complexity while maintaining reliable ULCI reception.
Solution Approach 2:
The network configures the UE in advance with a specific CORESET and search space for ULCI monitoring before actual ULCI transmission occurs. This preliminary configuration enables the UE to pre-identify the exact resource candidates to monitor, eliminating the need for exhaustive search during real-time operation and significantly reducing processing time.
2Speed
If the UE prioritizes decoding of specific control channel candidates, then the ULCI processing speed is improved, but the complexity of identifying correct candidates increases
Solution Approach 1:
The patent introduces a predetermined CORESET and search space configuration as an intermediary that bridges the network and UE for ULCI transmission. This intermediary structure provides clear, pre-defined rules for candidate identification, allowing the UE to prioritize decoding of specific candidates based on configuration parameters rather than complex real-time analysis, thus simplifying the identification process while maintaining high processing speed.
3Productivity
If the network transmits ULCI in a predetermined CORESET and search space, then the ULCI transmission efficiency is improved, but the flexibility in resource allocation is reduced
Solution Approach 1:
While the CORESET and search space for ULCI are predetermined, the patent allows dynamic adaptation through RRC configuration that can be updated based on network conditions and service requirements. The predetermined structure provides efficiency for immediate ULCI transmission, while the configurability maintains flexibility for long-term resource allocation adjustments, resolving the contradiction between efficiency and adaptability.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a configuration for determining a control channel resource candidate that corresponds to an uplink cancellation indication from a set of control channel resource candidates configured for the UE. The UE may also determine the control channel resource candidate that corresponds to the uplink cancellation indication from the set of control channel resource candidates based on the configuration and may monitor for the uplink cancellation indication in the control channel resource candidate that corresponds to the uplink cancellation indication based on the determining.