Wireless Control Channel Resource Element Group Bundle Mapping
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Solution Overview
Problem
In next-generation wireless communications systems, accurately and efficiently mapping control channel elements (CCEs) to resource element groups (REGs) within a control resource set is challenging due to the potential for different CCEs to be mapped to the same resource, leading to failures in receiving and sending control information.
Innovation Solution
A method where a terminal device determines M resource element group bundles in a control resource set based on offset and shift values, using interleaving parameters to ensure unique mapping of CCEs to REGs, thereby avoiding resource conflicts and improving resource configuration accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If different CCEs are mapped to the same resource in a control resource set, then resource utilization is improved, but control information transmission reliability deteriorates
Solution Approach 1:
The control resource set is segmented into multiple resource element group bundles, where each bundle contains a specific number of resource element groups. This segmentation ensures that different CCEs are mapped to different bundles, preventing resource conflicts while maintaining efficient resource utilization. The segmentation creates distinct mapping regions that preserve transmission reliability.
Solution Approach 2:
The patent introduces a new dimension of resource organization by grouping resource element groups into resource element group bundles. This dimensional change allows for more sophisticated mapping strategies where CCEs can be distributed across multiple dimensions (frequency, time, and bundle index), thereby avoiding collisions while maximizing resource utilization.
2Manufacturing precision
If complex mapping rules are used to map CCEs to REGs, then mapping accuracy is improved, but device complexity increases
Solution Approach 1:
The patent employs parameter-based mapping rules where the mapping from CCE to REG is determined by changing parameters such as bundle index, start position, and number of REGs. These parameter changes provide a systematic way to achieve accurate mapping without requiring complex algorithms, as the mapping can be computed through straightforward parameter substitution and arithmetic operations.
Solution Approach 2:
The mapping mechanism is designed to be self-service through predefined formulas and rules that automatically determine the mapping relationship between CCEs and REGs. The terminal device can independently perform the mapping using the provided parameters and rules without requiring complex external control or coordination, thereby reducing overall system complexity while maintaining mapping accuracy.
Data Source
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AI summary
This application relates to the field of wireless communications, and in particular, to a communication method, an apparatus, and a system in a wireless communications system. In the method, a network device and a terminal device determine M resource element group bundles in a control resource set. The network device sends a control channel on resources corresponding to the M resource element group bundles. The terminal device detects the control channel on the resources corresponding to the M resource element group bundles, where M is greater than or equal to 1. The control resource set includes B resource element group resource element group bundles. By using the method, resource configuration efficiency in a communications system is improved.