E-PDCCH DMRS Parameter Configuration for Wireless Control
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Solution Overview
Problem
The existing wireless communication systems face challenges in efficiently defining the relationship between DMRS parameters and resources during E-PDCCH transmission, affecting the transmission of control information.
Innovation Solution
The method involves configuring DMRS parameters such as antenna ports and scrambling sequences with respect to each E-PDCCH set, allowing for efficient resource allocation and multiplexing of E-PDCCHs in localized and distributed transmission schemes, optimizing DMRS overhead and interference management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If DMRS parameters are configured for each E-PDCCH set to optimize resource allocation, then control information transmission efficiency is improved, but system complexity increases
Solution Approach 1:
The patent segments the E-PDCCH resources into multiple E-PDCCH sets, with each set having independently configurable DMRS parameters. This segmentation allows optimized resource allocation within each set while managing overall system complexity through structured organization of the segmented components.
Solution Approach 2:
Different DMRS parameters (such as scrambling sequences, cyclic shifts, and orthogonal cover codes) are configured locally for each E-PDCCH set based on specific transmission requirements. This local quality approach enables tailored optimization for localized transmission scenarios while maintaining standardized configurations for distributed scenarios.
2Quantity of substance
If DMRS overhead is optimized through parameter configuration, then resource utilization improves, but channel estimation accuracy may deteriorate
Solution Approach 1:
The patent employs parameter changes in DMRS configuration (scrambling sequences, cyclic shifts, orthogonal cover codes) to achieve efficient resource utilization. By dynamically adjusting these parameters based on transmission conditions, the system optimizes the balance between DMRS overhead and channel estimation accuracy, ensuring sufficient reference signals are allocated without excessive overhead.
3Reliability
If interference management is improved through DMRS parameter optimization, then system reliability increases, but device complexity increases
Solution Approach 1:
The patent converts potential interference into a manageable parameter by using specific DMRS configurations (cyclic shifts, orthogonal codes) that transform interfering signals into orthogonal or separable components. This approach turns interference management from a complex suppression problem into a structured parameter allocation task, improving reliability while controlling complexity.
Data Source
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AI summary
A method for enabling a base station to transmit control information in a wireless communication system according to one embodiment of the present invention, comprises a step of transmitting an enhanced physical downlink channel (E-PDCCH) for a terminal using at least one physical resource block pair among a plurality of physical resource block pairs for transmitting the E-PDCCH, wherein the plurality of physical resource block pairs include one or more physical resource block pair sets, and a parameter related to a demodulation reference signal for the E-PDCCH is set with respect to each physical resource block pair set.