DMRS Port Range Determination for MU-MIMO Reception
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Solution Overview
Problem
In Multi-User Multiple-Input Multiple-Output (MU-MIMO) communication systems, the receiving end faces complexity in blind detection of Orthogonal Cover Code (OCC) length and low channel estimation and demodulation reception performance due to the inability to confirm port occupation situations of other receiving ends.
Innovation Solution
A data processing method that determines the range of DMRS ports occupied by other receiving ends using information such as the usage state of a joint encoding table, the number of layers, and the number of codewords corresponding to the physical downlink shared channel, allowing the first receiving end to process data accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the receiving end performs blind detection of OCC length without knowing port occupation situations, then the system can support high-order MU-MIMO transmission, but the detection complexity increases and performance deteriorates
Solution Approach 1:
The base station performs preliminary actions by determining and notifying the terminal about the port occupation situations of other receiving ends before the terminal performs channel estimation. This advance information allows the terminal to configure its detection parameters correctly, avoiding complex blind detection while maintaining high-order MU-MIMO capability.
Solution Approach 2:
The base station provides feedback information to the terminal regarding the port occupation situations of other receiving ends. This feedback mechanism enables the terminal to adapt its channel estimation process based on actual system state, reducing detection complexity while preserving versatility.
2Productivity
If the receiving end cannot confirm port occupation situations of other receiving ends, then the system supports multiple users in MU-MIMO, but channel estimation performance decreases
Solution Approach 1:
The base station determines and notifies the terminal about the port occupation situations of other receiving ends before the terminal performs channel estimation. This preliminary action provides the terminal with necessary information to configure its channel estimation process correctly, thereby improving measurement precision while maintaining system productivity.
3Adaptability or versatility
If the receiving end performs blind detection without port occupation information, then the system can accommodate multiple users, but demodulation reception performance deteriorates
Solution Approach 1:
The base station provides feedback information to the terminal about the port occupation situations of other receiving ends. This feedback enables the terminal to perform accurate channel estimation and demodulation by knowing the actual port configuration, thereby improving reliability while maintaining multi-user support capability.
Data Source
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AI summary
Disclosed are a data processing method and apparatus. The method includes: a first receiving end determines a range of a data demodulation reference signal (DMRS) ports occupied by one or more second receiving ends by using at least one of the following information: a usage state of a joint encoding table corresponding to a DMRS port group, the number of layers corresponding to a physical downlink shared channel (PDSCH) of the first receiving end, and the number of codewords corresponding to the PDSCH of the first receiving end; and the first receiving end processes data according to the range of the DMRS ports occupied by one or more second receiving ends.