PDCCH Blind Decoding Budget for Cross-Carrier Scheduling
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Solution Overview
Problem
The challenge in 5G wireless communication systems is maintaining the PDCCH blind decoding budget when a cell can be scheduled by another cell and by itself, which can lead to increased complexity and resource constraints.
Innovation Solution
Implement methods to manage PDCCH blind decoding by configuring search spaces, ordering blind decoding processes, and counting candidates to ensure the total PDCCH blind decoding budget is not exceeded, including techniques such as search space sharing, candidate configuration, and predefined decoding orders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a cell is scheduled by another cell and by itself (cross-carrier scheduling), then scheduling flexibility and resource utilization are improved, but PDCCH blind decoding budget and system complexity increase
Solution Approach 1:
The patent segments the blind decoding process by introducing separate search space sets for cross-carrier scheduling (CCS) and self-scheduling. By dividing the monitoring resources into distinct segments with different monitoring configurations, the system enables flexible cross-carrier scheduling while preventing blind decoding budget exhaustion through separate resource allocation and monitoring occasion management.
Solution Approach 2:
The patent implements dynamic monitoring adaptation by allowing the terminal to adjust monitoring behavior based on scheduling type. The network can dynamically configure search space sets and monitoring parameters, enabling the system to adapt monitoring resources according to whether cross-carrier or self-scheduling is being used, thereby maintaining scheduling flexibility while controlling blind decoding complexity.
2Adaptability or versatility
If multiple search space sets are configured for cross-carrier scheduling, then scheduling capability is improved, but terminal processing complexity and resource consumption increase
Solution Approach 1:
The patent applies local quality by configuring different monitoring parameters and search space characteristics for cross-carrier scheduling versus self-scheduling. Each search space set is optimized with specific properties (monitoring occasions, aggregation levels, etc.) tailored to its scheduling purpose, allowing the terminal to process CCS and self-scheduling differently and efficiently without uniform complexity across all monitoring activities.
Solution Approach 2:
The patent implements partial action by enabling the terminal to monitor only a subset of search space sets at any given time based on the scheduling type. The network can selectively activate or deactivate specific search space sets, allowing the terminal to perform partial monitoring for cross-carrier scheduling while maintaining the option for full monitoring capability when needed, thus balancing capability with processing complexity.
Data Source
AI summary
The present application relates to methods, systems, and devices related to digital wireless communication, and more specifically, to techniques related to digital wireless communication, and more specifically, to techniques related to maintaining a PDCCH blind decoding budget in the case that a cell can be scheduled by another cell and by itself. In one exemplary aspect, a method for wireless communication is disclosed. The method includes receiving, by a terminal on a scheduling cell, control information for a first cell according to a rule that an amount of blind decoding resources for the first cell does not exceed a budget, wherein the first cell is scheduled by the scheduling cell and the first cell is also scheduled by itself.