DMRS Port Configuration for Throughput in 5G Terminals
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Solution Overview
Problem
In future radio communication systems, such as NR, the number of DMRS ports needs to be increased to maintain communication throughput and quality, but existing methods have not actively addressed this requirement.
Innovation Solution
A terminal is designed with a receiving section to configure DMRS and a control section to manage the transmission and reception of DMRS based on associations between CDM groups and DMRS ports, allowing for more than 8 DMRS ports for configuration type 1 and more than 12 DMRS ports for configuration type 2.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of DMRS ports is increased to maintain communication throughput and quality, then communication performance is improved, but existing specification methods become insufficient
Solution Approach 1:
The patent segments the DMRS port configuration into two distinct types (Type 1 and Type 2), each with different maximum port numbers (8 and 12 respectively). This segmentation allows the system to handle different communication scenarios with appropriate port configurations, resolving the contradiction by providing structured complexity management while enabling throughput enhancement through type selection based on channel conditions and user requirements
Solution Approach 2:
The patent introduces dynamic port allocation within each DMRS configuration type, where the actual number of active ports can be adjusted based on communication needs. The terminal and base station can dynamically select which ports to use within the configured type, allowing flexible adaptation to varying throughput requirements while maintaining manageable configuration complexity through the type framework
2Reliability
If more DMRS ports are used for orthogonalization of layers, then communication quality is improved, but specification coverage becomes insufficient
Solution Approach 1:
The patent adds a new dimension to the DMRS port configuration by introducing configuration types as a categorical dimension. Instead of simply increasing port numbers linearly, the system creates two distinct dimensional frameworks (Type 1 with 8 ports, Type 2 with 12 ports), each optimized for different scenarios. This dimensional approach enhances communication quality through appropriate port selection while improving specification adaptability to diverse communication requirements
3Productivity
If the number of DMRS ports is increased beyond existing specifications, then appropriate port allocation is achieved, but system complexity increases
Solution Approach 1:
The patent changes the parameter of maximum DMRS ports from a single value to two distinct values (8 for Type 1, 12 for Type 2). This parameter change allows the system to achieve appropriate port allocation for different throughput requirements while managing complexity through clear parameter differentiation. The terminal and base station manage complexity by selecting the appropriate type parameter based on communication conditions rather than handling all possible port numbers uniformly
Data Source
AI summary
A terminal according to one aspect of the present disclosure includes a receiving section that receives a configuration of a demodulation reference signal (DMRS), and a control section that controls transmission and reception of the DMRS, based on one or more associations between a plurality of code division multiplexing (CDM) groups and a plurality of DMRS ports and the configuration. The number of the plurality of DMRS ports for DMRS configuration type 1 is larger than 8, and the number of the plurality of DMRS ports for DMRS configuration type 2 is larger than 12. The plurality of DMRS ports include a first plurality of DMRS ports and a second plurality of DMRS ports. According to one aspect of the present disclosure, an appropriate number of DMRS ports can be used.