Bandwidth Part Frequency Position Determination for 5G Control Channel Reception
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In 5G wireless communication systems, the efficient reception of downlink control channels is hindered by the need for UE to adjust bandwidth parts, leading to interruptions in data reception and reduced throughput due to the interval required for converting bandwidth parts, and there is a lack of an ideal solution for indicating PUCCH resources for HARQ-ACK feedback.
Innovation Solution
A method and apparatus for UE to dynamically determine the frequency-domain position of the bandwidth part for receiving the downlink control channel, reducing the adjustment time interval and optimizing resource allocation, and a method for determining PUCCH resources for HARQ-ACK feedback using broadcast information and physical layer signaling to ensure timely system access and efficient resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the UE adjusts bandwidth parts to receive downlink control channels, then the frequency-domain flexibility is improved, but the data reception throughput deteriorates due to conversion intervals
Solution Approach 1:
The patent determines the frequency-domain position of the bandwidth part for receiving the downlink control channel in advance, before the actual reception occurs. This preliminary determination allows the UE to prepare the appropriate bandwidth part configuration ahead of time, eliminating the need for conversion intervals during actual data reception and thus maintaining throughput while providing frequency-domain flexibility.
Solution Approach 2:
The patent dynamically determines the frequency-domain position of the bandwidth part based on received signaling information. This dynamic approach allows the system to adapt to different transmission scenarios while avoiding fixed conversion intervals, thereby maintaining data reception throughput while providing the necessary frequency-domain adaptability for efficient resource allocation.
2Productivity
If the UE converts bandwidth parts for receiving downlink control channels, then the resource allocation efficiency is improved, but the time required for conversion increases the interval and reduces throughput
Solution Approach 1:
The frequency-domain position of the bandwidth part is determined in advance based on received signaling, before the actual downlink control channel reception. This preliminary action eliminates the need for time-consuming conversion intervals during critical reception periods, thus reducing time loss while maintaining efficient resource allocation.
Solution Approach 2:
The patent ensures continuous data reception by determining the bandwidth part configuration in advance and maintaining it during the reception interval. This continuity eliminates interruptions caused by bandwidth part conversion, ensuring that useful action (data reception) continues without interruption while resource allocation remains efficient.
3Power
If the UE uses wide bandwidth for 5G services, then the data rate capability is improved, but the power consumption increases
Solution Approach 1:
The patent determines the frequency-domain position of the bandwidth part dynamically based on received signaling, allowing the UE to activate only the necessary portion of the wide bandwidth for each specific transmission. This local quality approach enables the UE to maintain capability for wide bandwidth operation when needed while consuming power only for the actually used frequency resources, thus achieving high data rate capability with reduced power consumption.
Solution Approach 2:
The patent changes the bandwidth part parameters (frequency-domain position and size) dynamically based on received signaling information. This allows the UE to adapt the bandwidth configuration to match the actual service requirements, enabling high data rates when wide bandwidth is needed while reducing power consumption when narrower bandwidth suffices, thus resolving the contradiction between data rate capability and power consumption.
Data Source
Figure 1~2A
Figure 2B~3
Figure 4~6
AI summary
A method performed by a user equipment (UE) in a wireless communication system, a UE and a base station. The method comprises: receiving, from a base station, information for configuring a first bandwidth part (BWP), via higher layer signaling, wherein the first BWP is configured to be used in case that a physical layer signaling for a physical downlink shared channel (PDSCH) is not received during a time interval on a using BWP for physical downlink control channel, PDCCH, detection and PDSCH reception; receiving, from the base station, signals on a second BWP set as the using BWP and is different from the first BWP; and in a case that the physical layer signaling for the PDSCH is not received on the second BWP during the time interval, changing the using BWP from the second BWP to the first BWP.