Preemption Indication for Overlapped Antenna Panel Resources
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Solution Overview
Problem
New-generation communication systems face challenges in accurately managing communication resources due to the fast attenuation of high-frequency channels, which affects beam-based transmission and reception, reducing the accuracy of resource indication, especially when different business types with varying performance requirements, such as eMBB and URLLC, share time-frequency resources.
Innovation Solution
A resource indication method and apparatus that determine overlapping time-frequency resources between antenna panels and generate preemption indication information to prevent data reception on overlapped resources, ensuring accurate resource allocation and usage diversity between terminals of different business types by indicating both time-frequency resources and antenna panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If time-frequency resources are shared between different business types (eMBB and URLLC), then resource utilization efficiency is improved, but resource indication accuracy deteriorates due to beam-based transmission and fast attenuation of high-frequency channels
Solution Approach 1:
The patent segments the resource indication by introducing antenna panel identification information to divide the time-frequency resources into distinct segments associated with different antenna panels. This allows terminals to accurately identify which specific antenna panel is transmitting on shared time-frequency resources, thereby maintaining resource indication accuracy while enabling resource sharing between eMBB and URLLC business types
Solution Approach 2:
The patent introduces antenna panel identification information as an intermediary element between the time-frequency resource allocation and the terminal reception. This intermediary provides the missing spatial dimension information that enables terminals to distinguish between different transmissions on overlapping resources, resolving the accuracy problem while maintaining resource sharing
2Loss of energy
If preemption indication information is generated only when antenna panels are the same and time-frequency resources overlap, then signaling overhead is reduced, but resource allocation reliability deteriorates in complex multi-panel scenarios
Solution Approach 1:
The patent applies local quality by making the preemption indication generation rule specific to the antenna panel context. Instead of a uniform rule for all transmissions, the system generates preemption indications based on the specific relationship between antenna panels and their assigned time-frequency resources, improving reliability for complex multi-panel scenarios while keeping signaling overhead low for simpler cases
Data Source
AI summary
A resource indication method in a communication system includes: determining a first time-frequency resource of a first antenna panel configured to send downlink data to a first terminal; determining a second time-frequency resource of a second antenna panel configured to send downlink data to a second terminal; generating preemption indication information indicating the second time-frequency resource in response to determining that the first antenna panel is the same as the second antenna panel and the first time-frequency resource overlaps with the second time-frequency resource; and sending the preemption indication information to the first terminal, such that the first terminal determines, based on the preemption indication information, an overlapped resource between the first time-frequency resource and the second time-frequency resource, and determines not to receive the downlink data on the overlapped resource.