Downlink Control Channel Multiplexing via Resource Block Subsets
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in efficiently multiplexing and transmitting downlink control channels, particularly in achieving sufficient diversity gain and resource allocation efficiency, which affects the reliability and complexity of control channel decoding.
Innovation Solution
The method involves dividing resource blocks into subsets and configuring basic resource allocation units for the downlink control channel, allowing for transmission in aggregated resources, with options for sequential allocation based on symbol or subcarrier indexes and applying offsets for resource element allocation, enabling efficient multiplexing and transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If downlink control channels are transmitted using conventional resource allocation methods, then resource allocation is simple, but diversity gain is insufficient and reliability is reduced
Solution Approach 1:
The patent divides resource blocks into multiple subsets (first subset and second subset) and allocates control channels to different subsets based on aggregation levels. This segmentation enables diversity gain by distributing control channel transmissions across different resource subsets, improving reliability while managing complexity through structured allocation rules.
2Reliability
If resource blocks are divided into subsets for control channel transmission, then diversity gain is enhanced, but resource allocation complexity increases
Solution Approach 1:
The patent changes the parameter of resource block aggregation by defining different aggregation levels (first aggregation level and second aggregation level) that correspond to different subsets of resource blocks. This allows the system to adjust diversity gain dynamically by changing aggregation parameters without fundamentally redesigning the resource allocation structure, thus enhancing reliability while controlling complexity.
3Productivity
If multiple aggregation levels are used for control channels, then resource utilization efficiency improves, but decoding complexity increases
Solution Approach 1:
The patent segments control channels into different aggregation levels where each level corresponds to specific resource block subsets. This segmentation allows efficient resource utilization by matching different aggregation levels to different channel conditions and user requirements, while the structured segmentation approach helps manage decoding complexity through organized resource allocation patterns.
Data Source
Figure 1
Figure 2(a)~2(b)
Figure 3
AI summary
Abstract: Disclosed is a method for a base station to transmit a downlink control channel in a wireless communication system. Specifically, the method comprises the steps of: separating each resource block, of which there are at least one, into a preconfigured number of subsets; structuring basic resource allocation units for an downlink control channel as one of the subsets comprised in one or more resource blocks; configuring the basic resource allocation units, the number of which correspond to the aggregation level of the downlink control channel, as transmission resources; and using the transmission resource to transmit the downlink control channel to a terminal.