Downlink Bandwidth Allocation for Mixed-SCS UE Scheduling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The increasing number of UEs and data volume in wireless communication systems necessitates a method to efficiently utilize limited radio resources for transmitting and receiving uplink/downlink data and control information.
Innovation Solution
A method for determining a maximum transmission bandwidth for user equipment channels, including transmitting/receiving physical downlink control and shared channels, with information on excluded parts of the signal based on UE channel bandwidth and subcarrier spacings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of UEs and data volume increase to provide diverse communication services, then the communication service coverage and data capacity improve, but the radio resources become more limited and resource utilization efficiency deteriorates
Solution Approach 1:
The patent segments the downlink signal transmission by determining a maximum transmission bandwidth that is greater than a predefined specific value based on UE channel bandwidth and subcarrier spacings. This segmentation allows the base station to divide the available radio resources into manageable bandwidth portions, enabling efficient allocation to multiple UEs with different bandwidth capabilities simultaneously, thus improving resource utilization efficiency while supporting increased data volume
Solution Approach 2:
The patent implements dynamic resource allocation by transmitting information indicating that part of the downlink signal is excluded from transmission or that a UE excludes part of an uplink signal. This dynamic adjustment allows the system to adapt radio resource allocation in real-time based on current channel conditions, UE capabilities, and traffic demands, optimizing resource utilization efficiency as the number of UEs and data volume change
2Productivity
If the maximum transmission bandwidth is determined to be greater than a predefined specific value based on UE channel bandwidth and SCSs, then the throughput and resource utilization improve, but the system complexity and signal management difficulty increase
Solution Approach 1:
The patent changes key transmission parameters by determining the maximum transmission bandwidth as a value greater than a predefined specific value based on UE channel bandwidth and subcarrier spacings (SCSs). This parameter adjustment enables the system to optimize throughput and resource utilization by flexibly adapting bandwidth allocation to match UE capabilities and channel conditions, achieving higher productivity without requiring fundamentally new system architectures
3Productivity
If information related to excluded parts of the signal is transmitted to manage bandwidth efficiently, then the resource allocation efficiency improves, but the control signaling overhead increases
Solution Approach 1:
The patent extracts and transmits only the essential information needed for efficient resource allocation by indicating that part of the downlink signal is excluded from transmission or that a UE excludes part of an uplink signal. This selective information transmission approach allows the system to improve resource allocation efficiency by providing necessary bandwidth management instructions while minimizing control signaling overhead by excluding redundant information
Data Source
AI summary
A downlink signal transmission method, according to embodiments, by which a base station transmits a downlink signal in a wireless communication system comprises: determining a maximum transmission bandwidth for a UE channel bandwidth for a cell; and transmitting, on the cell, a physical downlink control channel and a physical downlink shared channel, wherein: on the basis of the physical downlink control channel and/or the physical downlink shared channel, information related to the determined maximum transmission bandwidth and a part of the downlink signal are excluded from the transmission, or information indicating that a terminal excludes a part of an uplink signal from the transmission is transmitted; and the maximum transmission bandwidth is determined to be a value larger than a specific value previously defined on the basis of a sub carrier spacing (SCS) and a terminal channel bandwidth.