Downlink Bandwidth Signaling for High-UE Radio Resource Efficiency
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Solution Overview
Problem
The increasing number of UEs served by a base station and the volume of data and control information transmitted/received pose challenges in efficiently utilizing limited radio resources for communication, necessitating a method to optimize the transmission and reception of uplink/downlink data and control information.
Innovation Solution
A method for determining a maximum transmission bandwidth for user equipment channel bandwidth, where information related to this bandwidth is transmitted/received based on physical downlink control and shared channels, with the bandwidth being greater than a specific value based on subcarrier spacing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of UEs served by a base station is increased, then the coverage and service capacity are improved, but the efficiency of utilizing limited radio resources deteriorates
Solution Approach 1:
The patent segments the downlink transmission by determining a maximum transmission bandwidth specifically for the UE channel bandwidth, separating the control channel (PDCCH) and shared channel (PDSCH) transmissions. This segmentation allows optimized resource allocation for each channel type, improving overall radio resource utilization efficiency while supporting increased UE density.
Solution Approach 2:
The patent changes the bandwidth parameter by determining a maximum transmission bandwidth that is greater than a specific value based on UE channel bandwidth and subcarrier spacing (SCS). This parameter adjustment enables more efficient spectrum utilization and improves radio resource efficiency when serving multiple UEs.
2Quantity of substance
If the volume of data and control information transmitted/received is increased, then the communication capacity is improved, but the efficiency of utilizing limited radio resources deteriorates
Solution Approach 1:
The patent implements dynamic transmission by determining the maximum transmission bandwidth based on current UE channel bandwidth and subcarrier spacing conditions. This dynamic adjustment allows the system to adapt to varying data volumes and channel conditions, maintaining high radio resource utilization efficiency even when transmitting large volumes of data and control information.
Solution Approach 2:
The patent adjusts transmission parameters by setting the maximum transmission bandwidth greater than a specific value based on UE channel bandwidth and SCS. This parameter optimization enables efficient handling of increased data and control information volumes while maintaining resource utilization efficiency.
3Quantity of substance
If the maximum transmission bandwidth is increased to support more UEs, then the service capacity is improved, but the complexity of bandwidth management increases
Solution Approach 1:
The patent applies preliminary action by determining the maximum transmission bandwidth in advance based on UE channel bandwidth and subcarrier spacing before actual data transmission. This pre-determination simplifies subsequent bandwidth management operations and reduces complexity while maintaining high service capacity.
Solution Approach 2:
The patent optimizes bandwidth management by changing the maximum transmission bandwidth parameter to be greater than a specific value based on UE channel bandwidth and SCS. This parameter setting simplifies the management complexity while supporting increased service capacity for multiple UEs.
Data Source
AI summary
A downlink signal transmitting method according to embodiments comprises, when a base station transmits a downlink signal in a wireless communication system: determining a maximum transmission bandwidth for a UE channel bandwidth for a cell; and transmitting a physical downlink control channel and a physical downlink shared channel on the cell, wherein information related to the determined maximum transmission bandwidth is transmitted on the basis of at least one of the physical downlink control channel or the physical downlink shared channel, and the maximum transmission bandwidth may be determined to be a value greater than a specific value pre-defined on the basis of the UE channel bandwidth and subcarrier spacing (SCS). A downlink signal receiving method according to embodiments comprises, when a user equipment receives a downlink signal in a wireless communication system: receiving a physical downlink control channel and a physical downlink shared channel on a cell; and receiving information related to a maximum transmission bandwidth for a UE channel bandwidth for the cell on the basis of at least one of the physical downlink control channel or the physical downlink shared channel, wherein the maximum transmission bandwidth may be a value greater than a specific value pre-defined on the basis of the UE channel bandwidth and subcarrier spacing (SCS).