Antenna Group Selection for Massive MIMO Channel Feedback Reduction
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Solution Overview
Problem
In massive MIMO wireless communication systems, the increasing number of antennas leads to challenges in resource allocation and channel feedback, particularly in terms of channel reporting and interference management, which affects the efficiency and capacity of communication.
Innovation Solution
The implementation of pattern/polarization beam division multiple access (BDMA) technology, where antennas are grouped based on reference signals, allowing for selective resource allocation and reduced channel feedback overhead by identifying optimal antenna groups for communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of antennas is increased in massive MIMO systems, then antenna integration ratio and channel gain isolation are improved, but channel feedback overhead and resource allocation complexity increase
Solution Approach 1:
The patent divides the large number of antennas into multiple antenna groups, where each group is managed separately. This segmentation allows the receiving apparatus to select only one antenna group for communication, thereby reducing the channel feedback overhead from needing to report all antennas to only reporting the selected group, resolving the contradiction between having many antennas and managing feedback overhead.
2Quantity of substance
If the number of antennas is increased in massive MIMO systems, then antenna integration ratio and channel gain isolation are improved, but resource allocation complexity increases
Solution Approach 1:
By segmenting antennas into groups and allowing selection of one group, the resource allocation complexity is reduced from managing individual antennas to managing groups, making the system more tractable while still utilizing the benefits of many antennas.
Solution Approach 2:
The patent introduces dynamic selection of antenna groups based on channel conditions. The receiving apparatus selects the optimal antenna group from multiple groups dynamically, allowing the system to adapt to changing conditions while simplifying the allocation problem compared to static management of all antennas.
3Area of stationary object
If pattern/polarization characteristics are used to increase antenna integration, then space efficiency is improved, but channel feedback requirements increase
Solution Approach 1:
The patent segments antennas with pattern/polarization characteristics into groups, allowing the receiving apparatus to select one group based on channel conditions. This reduces the feedback requirement from reporting all pattern/polarization antenna characteristics to only reporting the selected group, resolving the contradiction between space efficiency and feedback overhead.
Data Source
AI summary
A receiving apparatus based on pattern/polarization beam division multiple access (BDMA) including an antenna configured to receive a reference signal related to at least one of patterns and polarizations of a plurality of antennas included in a transmitting apparatus, and configured to transmit channel information, and a controller configured to select a particular antenna group among a plurality of antenna groups that are grouped from the plurality of antennas included in the transmitting apparatus using the reference signal, and configured to generate the channel information corresponding to the particular antenna group.