Terminal-Specific Reference Signal Allocation for FD-MIMO Beamforming
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Solution Overview
Problem
Current technologies for utilizing full-dimension multiple-input and multiple-output (FD-MIMO) in wireless communication networks are inefficient in processing and transmitting reference signals and feedback measurements, leading to increased overhead and difficulty in maintaining high-speed beamforming for moving terminals.
Innovation Solution
A communication apparatus and method that allocates specific radio resources for each terminal to measure and transmit UE-specific beamformed downlink and uplink CSI-RS, allowing for efficient measurement and reporting of channel state information, reducing overhead, and enabling continuous high-speed beamforming.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional reference signal transmission methods are used in FD-MIMO systems, then beamforming capability is provided, but processing efficiency is low and overhead is increased
Solution Approach 1:
The patent segments the reference signal transmission by allocating specific radio resources for each terminal to measure and transmit UE-specific beamformed downlink and uplink CSI-RS. This segmentation allows efficient measurement and reporting of channel state information while reducing overall overhead, directly resolving the contradiction between processing efficiency and overhead reduction.
2Speed
If conventional reference signal transmission is used, then beamforming is supported, but maintaining high-speed beamforming for moving terminals is difficult
Solution Approach 1:
The patent implements preliminary action by having terminals measure channel state information using allocated radio resources before actual data transmission. The terminal-specific reference signals are prepared and measured in advance, enabling quick beamforming adjustments when terminals move, thus maintaining high-speed continuous beamforming capability.
Data Source
AI summary
A communication apparatus includes a control unit configured to measure a terminal-specific reference signal transmitted in a radio resource allocated for each terminal apparatus in units of the radio resource and transmits information indicating a measurement result.