Uplink Resource Handling During Dynamic BWP Switching
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Solution Overview
Problem
Existing communication systems face challenges in adapting to dynamic changes in uplink and downlink sub-bands, leading to inefficiencies and performance issues due to the lack of clear protocols for processing uplink resources when sub-band configurations change.
Innovation Solution
A communication method and apparatus that enable a terminal device to process current uplink resources based on changes in bandwidth parts (BWP), including discarding, relocating, or reconfiguring resources to ensure they remain within valid uplink sub-bands, and a network device to send configuration information for BWP switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If semi-static signaling (RRC signaling) is used to configure uplink resources, then resource configuration is simple and reliable, but the system cannot adapt to dynamic changes in uplink sub-bands and downlink sub-bands
Solution Approach 1:
The patent introduces dynamic BWP switching mechanisms that allow the network to adapt uplink resource configurations in real-time based on changing traffic demands and sub-band conditions. The terminal device can switch between different BWPs configured by the network, enabling flexible adaptation without requiring complete reconfiguration of all uplink resources.
Solution Approach 2:
The patent divides the uplink bandwidth into multiple BWPs (Bandwidth Parts), each with specific resource configurations. This segmentation allows the network to activate only the necessary BWPs for current uplink transmissions, improving adaptability while managing complexity through modular resource organization.
2Productivity
If BWP changes occur dynamically, then resource utilization efficiency improves, but uplink transmission reliability may be compromised due to lack of clear processing protocols
Solution Approach 1:
The network pre-configures multiple BWPs with different resource allocations before dynamic switching occurs. When BWP switching is needed, the terminal device can quickly transition to a pre-configured BWP, ensuring continuous uplink transmission without interruption or reliability loss.
Solution Approach 2:
The patent establishes feedback mechanisms where the network monitors terminal device status and sub-band conditions, then sends BWP switching indications to optimize resource utilization. This closed-loop control ensures that dynamic BWP changes maintain uplink transmission reliability while improving overall efficiency.
Data Source
AI summary
Embodiments of the present disclosure provide a communication method and relate to the field of communication technologies. The method includes: processing, by a terminal device after the terminal device determines that a bandwidth part BWP changes, a current uplink resource based on the change of the BWP, where the current uplink resource is used for a present uplink transmission.