DMRS Configuration for Overlapping Control Resource Sets in 5G
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Solution Overview
Problem
In 5G communication systems, the overlap of control resource sets with different DMRS configurations poses challenges for effective transmission and reception of downlink control channels, particularly in overlapping time and frequency resources.
Innovation Solution
The method involves configuring and managing control resource sets by transmitting and receiving DMRS based on specific configuration information, allowing for effective decoding in overlapping regions through techniques such as rate matching and DMRS configuration assumptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple control resource sets with different DMRS configurations are configured to support flexibility and adaptability, then system adaptability is improved, but decoding reliability deteriorates due to ambiguity in overlapping regions
Solution Approach 1:
The patent applies local quality by differentiating DMRS configuration based on the specific region (control resource set) where it is applied. Each control resource set can have its own DMRS configuration parameters (such as scrambling sequence, mapping pattern) tailored to that set's characteristics, allowing flexible multi-set configuration while maintaining clear local identification and decoding reliability through region-specific parameters.
2Reliability
If DMRS is transmitted in overlapping control resource sets to ensure coverage, then transmission reliability is improved, but resource efficiency deteriorates due to redundant transmission
Solution Approach 1:
The patent applies preliminary action by having the terminal determine in advance which control resource sets contain overlapping DMRS regions and which do not. Based on this pre-determined information, the terminal can efficiently process only the necessary DMRS regions, avoiding redundant processing while ensuring reliable reception in overlapping areas through advance identification and selection of critical regions.
Data Source
AI summary
The present disclosure relates to a communication technique for fusing a 5G communication system to support a higher data rate than a 4G system with IoT technology; and a system thereof. In embodiments according to the disclosure provide an improved method for transmitting and receiving a control channel. A method performed by a base station according to disclosed aspects includes: transmitting first control area setting information containing first demodulation reference signal (DMRS) setting information for a first control area, transmitting second control area setting information containing second DMRS setting information for a second control area, identifying a third control area where the first control area overlaps with the second control area, and transmitting a DMRS on the basis of the first DMRS configuration information in the first control area including the third control area. A corresponding method performed by a terminal, a base station and a terminal are also described.