DMRS Power Boosting via Resource Element Segmentation
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently transmitting and receiving Demodulation Reference Signals (DMRS) in conjunction with downlink data, particularly in determining optimal transmission power and multiplexing antenna ports, which affects data transfer rates and energy efficiency.
Innovation Solution
The method involves determining transmission power for DMRS based on the number of antenna ports and resource element mapping, allowing for efficient power boosting and multiplexing of DMRS with downlink data and other reference signals, while considering the mapping pattern to optimize power allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If DMRS and downlink data are multiplexed in the same resource elements, then resource utilization is improved, but transmission power allocation becomes complex and power boosting capability is reduced
Solution Approach 1:
The invention segments the resource elements into different types: first resource elements for DMRS only, and second resource elements for both DMRS and downlink data. This segmentation allows different power allocation strategies for different resource elements, simplifying the overall power allocation complexity while maintaining high resource utilization.
Solution Approach 2:
The invention introduces dynamic power boosting capability where the transmission power of DMRS can be selectively increased in specific resource elements based on channel conditions and requirements. This dynamic adjustment resolves the contradiction by providing flexibility in power allocation without requiring complex static power distribution across all multiplexed resources.
2Reliability
If DMRS transmission power is increased to improve demodulation accuracy, then reliability is improved, but energy consumption increases
Solution Approach 1:
The invention applies different power levels to different resource elements based on their specific requirements. First resource elements containing only DMRS can receive power boosting for improved demodulation accuracy, while second resource elements containing both DMRS and data can use balanced power allocation. This local differentiation achieves reliable demodulation where needed without unnecessarily increasing overall energy consumption.
3Productivity
If more antenna ports are multiplexed for DMRS transmission, then system capacity is improved, but power boosting capability is reduced
Solution Approach 1:
The invention segments antenna ports into different groups that can be mapped to different resource element types. This allows certain antenna ports to utilize first resource elements with full power boosting capability, while other ports use second resource elements for multiplexing with data. The segmentation maintains system capacity through increased port multiplexing while preserving power boosting capability for critical ports.
Data Source
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AI summary
A method for transmitting and receiving a Reference Signal in a wireless communication system performed by a UE is disclosed. According to the present invention, a UE receives, from a base station, Downlink Control Information and receives a Demodulation Reference Signal (DMRS) through a plurality of antenna ports based on the Downlink Control Information and downlink data. The UE demodulates the downlink data based on the DMRS, and the downlink data is received in a same symbol as the DMRS or in different symbols with each other based on a number of symbols related to the downlink data.