LTE-A Muting Pattern Segmentation for CSI-RS Interference
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Solution Overview
Problem
Conventional LTE-A muting patterns in wireless communication systems are inefficient for operating control information across terminals supporting different wireless communication system protocols, leading to interference issues.
Innovation Solution
A method and apparatus for transmitting control signals using a defined muting pattern in LTE-A systems, where resources for CSI-RS and control signals are determined and applied based on multiple muting patterns, allowing for efficient transmission and reception of control information without interfering with legacy terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional LTE-A muting patterns are used, then interference with respect to channel state information reference signals is reduced, but control information about terminals supporting different wireless communication system protocols cannot be efficiently operated
Solution Approach 1:
The patent divides the muting pattern into two separate components: a first muting pattern applied to legacy LTE-A terminals and a second muting pattern applied to new terminals. This segmentation allows each terminal type to operate with its own optimized muting pattern, reducing interference for CSI-RS measurements while enabling efficient control information transmission to new terminals without protocol conflicts
Solution Approach 2:
The patent creates a universal muting pattern configuration that serves multiple terminal types simultaneously. The base station transmits control information containing both first resource information (for legacy terminals) and second resource information (for new terminals), allowing the system to accommodate different protocol versions within a unified framework
2Productivity
If resources are allocated for control signal transmission to new terminals, then control information efficiency is improved, but interference with legacy terminals increases
Solution Approach 1:
The patent applies different muting pattern characteristics to different terminal groups. The first muting pattern is specifically designed for legacy LTE-A terminals with appropriate muting locations, while the second muting pattern is optimized for new terminals. This local quality differentiation ensures that control information transmission to new terminals does not create harmful interference to legacy terminals operating under different protocol rules
Data Source
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AI summary
A method and apparatus are provided for transmitting control information to first and second terminals by a Base Station (BS) in a wireless communication system transmitting control information according to a plurality of muting patterns. The method includes determining a resource for transmitting a Channel Status Information Reference Signal (CSI-RS) and a resource for applying muting; determining a resource for transmitting a control signal to a first terminal according to the plurality of muting patterns; and transmitting control information including the determined resource information to at least one of the first terminal and a second terminal. The resource for transmitting the control signal to the first terminal is applied as a resource to which muting is applied for the second terminal.