DMRS Port Allocation for Eight-Layer PUSCH Uplink
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Solution Overview
Problem
The existing communication technologies face challenges in efficiently allocating DMRS ports for uplink transmission layers beyond four layers, particularly in scenarios requiring up to eight layers for enhanced SU-MIMO under an enhanced CP-OFDM waveform.
Innovation Solution
A method and apparatus for indicating DMRS ports by determining a DMRS port configuration table based on a DMRS type parameter, which includes a DMRS port allocation set for up to eight uplink data transmission layers, allowing for efficient allocation and indication of DMRS ports for PUSCH transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of uplink transmission layers is increased to eight layers, then the uplink transmission rate is improved, but the DMRS port allocation becomes unsolved
Solution Approach 1:
The patent segments the DMRS port allocation into different sets based on the number of transmission layers. For 8-layer transmission, a specific DMRS port allocation set is defined that divides the 8 layers into groups, with each group assigned specific DMRS ports. This segmentation allows the system to handle 8 layers by breaking down the allocation into manageable portions, resolving the complexity of port assignment while maintaining high transmission rates.
Solution Approach 2:
The patent changes the DMRS port configuration parameters by introducing a DMRS type parameter that determines which port allocation set to use. When 8 uplink transmission layers are detected, the system selects a specific DMRS port allocation set from predefined configurations, allowing flexible adaptation to different transmission scenarios without increasing overall system complexity.
2Productivity
If the uplink transmission layers are increased to eight layers, then the transmission capability is improved, but the conflict with other scheduled terminals increases
Solution Approach 1:
The patent segments the DMRS port allocation into dedicated sets for different transmission layer configurations. By defining specific port allocation sets for 8-layer transmission, the system ensures that terminals with different transmission requirements are assigned orthogonal ports, preventing interference and conflicts between scheduled terminals while maintaining high transmission capability.
Solution Approach 2:
The patent introduces a DMRS port allocation set as an intermediary mechanism between the transmission layer configuration and the actual port assignment. This intermediary structure mediates the resource allocation process, ensuring that 8-layer transmission can proceed without causing conflicts with other terminals by providing a structured approach to port assignment that isolates different transmission scenarios.
Data Source
AI summary
A method for indicating a DMRS port. The method includes: in response to a maximum number N of uplink data transmission layers corresponding to a physical uplink shared channel (PUSCH) transmission supported by a single terminal being equal to eight, determining a DMRS port configuration table for a first uplink data transmission layer based on a DMRS type parameter, in which the DMRS port configuration table includes a DMRS port allocation set defined for the first uplink data transmission layer; and indicating, based on the DMRS port configuration table, one or more DMRS ports allocated for the PUSCH transmission to the terminal.