Guard Time Indication for Frequency Domain Resource Adjustment
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Solution Overview
Problem
In next-generation wireless communications systems, the complexity of implementing guard times for frequency domain resource adjustments is increased due to varying subcarrier spacings and different bandwidth parts, leading to potential communication errors during radio frequency retuning.
Innovation Solution
A method and apparatus that allow a network device to flexibly indicate guard times to terminal devices, enabling them to adjust frequency domain resources efficiently by providing information about the guard time, thereby reducing system implementation complexity and preventing communication errors during frequency domain resource adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the base station configures multiple BWPs for the UE and instructs the UE to communicate on different BWPs based on scheduling requirements, then the system can provide higher data transmission rates and more flexible resource allocation, but the BWP adjustment causes radio frequency retuning that requires guard time and increases system implementation complexity
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the guard time duration based on the specific BWP adjustment scenario. The network device determines the guard time length according to factors such as subcarrier spacing, BWP frequency position, and adjustment direction, transforming a fixed guard time approach into a flexible, parameter-adaptive mechanism that reduces complexity while maintaining high data transmission rates
Solution Approach 2:
The patent implements dynamics by making the guard time configuration adaptive and variable rather than static. The guard time is dynamically determined based on real-time communication conditions, including the specific BWP transition being performed, allowing the system to optimize performance for each adjustment scenario while reducing overall system complexity
2Ease of manufacture
If a predefined guard time manner from eMTC is used in the NR system, then the implementation is simpler in terms of guard time definition, but the system implementation complexity is increased due to varying subcarrier spacings and different BWP configurations
Solution Approach 1:
The patent applies local quality by tailoring the guard time configuration to specific local conditions of each BWP adjustment scenario. Rather than using a universal predefined guard time, the network device determines appropriate guard time parameters based on the specific subcarrier spacing, frequency position, and adjustment characteristics of each BWP transition, ensuring optimal performance for each local context while managing overall system complexity
3Productivity
If the guard time is not properly managed during BWP adjustment, then the system can operate continuously without interruptions, but communication errors occur due to inconsistent understanding of guard time between the base station and the UE
Solution Approach 1:
The patent implements feedback by establishing consistent guard time understanding between the network device and UE through explicit signaling. The network device determines and communicates the guard time configuration to the UE, ensuring both parties have identical understanding of when and how long the guard time should be applied, preventing communication errors while maintaining continuous operation
Solution Approach 2:
The patent applies preliminary action by determining and notifying the UE of the guard time configuration before the BWP adjustment occurs. This advance notification ensures the UE is prepared for the upcoming adjustment with the correct guard time parameters, preventing communication errors and ensuring seamless transitions
Data Source
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AI summary
A frequency domain resource adjustment and apparatus, and an indication information sending method and apparatus, and a system relate to the field of communications technologies. The method includes: determining, by a network device, to adjust a frequency domain resource of a terminal device from a first frequency domain resource to a second frequency domain resource; sending information about a guard time to the terminal device; after receiving the information about the guard time that is sent by the base station, determining, by the terminal device, the guard time based on the information about the guard time; and adjusting, by the terminal device, the first frequency domain resource to the second frequency domain resource within the guard time. In the embodiments of this application, the information about the guard time is introduced, so that the network device can flexibly indicate the guard time to the terminal device in different cases, thereby reducing system implementation complexity.