DMRS Port Grouping for High-Order Interference Estimation
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Solution Overview
Problem
Existing communication protocols face poor interference estimation performance during high-order data transmission, particularly in larger antenna dimensions, as they are limited by the maximum of 12 orthogonal DMRS ports, which is insufficient for supporting hundreds of data streams.
Innovation Solution
Implementing a communication method that involves determining and sending specific DMRS port groups and their corresponding information to improve interference estimation accuracy, using different DMRS port groups and classifications based on time-frequency resources, orthogonal/non-orthogonal relationships, and interference ratios to enhance channel estimation and reduce signaling overheads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the existing protocol uses maximum 12 orthogonal DMRS ports, then the port multiplexing capability is limited, but the interference estimation performance deteriorates in high-order data transmission
Solution Approach 1:
The patent segments the DMRS ports into multiple groups (first DMRS port group, second DMRS port group, etc.) rather than treating all 12 ports uniformly. Each group is associated with specific time-frequency resources and orthogonality characteristics, enabling differentiated interference estimation for each group while supporting higher-order data transmission with hundreds of data streams
2Productivity
If more DMRS ports are used to support hundreds of data streams, then the spectral efficiency improves, but the interference estimation complexity increases
Solution Approach 1:
The patent applies local quality by assigning different characteristics to different DMRS port groups. Each port group has specific time-frequency resource associations and orthogonality properties, allowing the terminal to perform interference estimation tailored to each group's local characteristics rather than using a uniform approach for all ports, thus managing complexity while supporting high spectral efficiency
3Measurement precision
If DMRS ports are classified based on time-frequency resources and orthogonality relationships, then the interference processing accuracy improves, but the signaling overhead increases
Solution Approach 1:
The patent applies partial action by providing interference information only for specific port groups that require it, rather than universally for all DMRS ports. The network device determines which port groups need interference estimation based on the actual transmission scenario, sending interference information only when necessary, thus improving accuracy where needed while avoiding unnecessary signaling overhead
Data Source
AI summary
This application discloses a communication method and apparatus, to resolve a problem that interference estimation performance is poor during high-order data transmission. The method includes: determining that a DMRS port allocated to a first terminal is a first DMRS port; and sending first information and second information to the first terminal. The first information indicates the first DMRS port, the second information indicates a plurality of sets corresponding to the first DMRS port, and any one of the plurality of sets includes at least one DMRS port. Different DMRS port groups and different port group indications can improve accuracy and fineness of interference processing of a terminal device, help implement mapping of a higher-order DMRS, improve a port multiplexing capability, and implement transmission of more orthogonal data streams.