Multi-Band Uplink Switching Period Placement for Spectrum Utilization
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Solution Overview
Problem
In current flexible spectrum access technologies, user equipment (UE) struggles to determine the switching period location accurately when switching across multiple bands, leading to reduced spectrum resource utilization and impact on uplink communication quality, especially when the same band is involved with the highest priority.
Innovation Solution
A method and apparatus for determining the frequency domain resource on which the switching period is located by considering frequency domain resources with no highest priority, excluding physical uplink control channels, and optimizing uplink transmission chains or scheduled ports to minimize interference and ensure high-priority communication services are unaffected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the UE determines the switching period location based on existing technical standards when switching across multiple bands, then the switching can be completed, but the spectrum resource utilization is reduced due to inability to determine the switching period location in some scenarios
Solution Approach 1:
The patent changes the determination parameters for switching period location by introducing multiple selection criteria including: (1) excluding bands with highest priority, (2) selecting from bands of first specified type, (3) avoiding bands carrying physical uplink control channels. These parameter changes enable the UE to determine switching period location in scenarios where existing standards fail, thereby improving spectrum resource utilization while maintaining band switching capability
2Adaptability or versatility
If the UE interrupts information transmission on frequency domain resources during the switching period, then the band switching can be completed, but the uplink communication quality is impacted
Solution Approach 1:
The patent applies local quality by making the switching period location determination band-specific and resource-specific. By selecting different bands for switching period placement based on their priority, type, and carried channels, the system ensures that switching occurs in locations with minimal impact on uplink communication quality while maintaining the necessary frequency domain resource switching capability
3Productivity
If the UE switches between multiple bands dynamically, then the uplink resources are more fully used, but the radio frequency needs to be interrupted for switching period
Solution Approach 1:
The patent applies preliminary action by determining the switching period location in advance based on band priority, type, and channel information before the actual switching occurs. This allows the UE to prepare for the interruption by knowing exactly which frequency domain resources will be affected, enabling more efficient switching execution and reducing the actual impact on uplink resource utilization
Data Source
AI summary
This application provides example communication methods and example communication apparatuses. One example method includes, when switching from M frequency domain resources to N frequency domain resources, the communication apparatus determines, from the M frequency domain resources and the N frequency domain resources, a frequency domain resource on which a switching period is located. M and N are positive integers and a sum of M and N is greater than 2. The switching period is a time period for switching from the M frequency domain resources to the N frequency domain resources.