Uplink Signal Overlap Resolution via Reference Signal Grouping
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing overlapping uplink channels/signals in time-domain multiplexing, leading to reduced transmission quality and reliability, especially in multi-beam and multi-panel transmission scenarios.
Innovation Solution
A method where a node determines whether to transmit or drop uplink signals based on whether their associated reference signal resources belong to the same reference signal resource group, using time-division, space-division, or frequency-division multiplexing, to resolve overlapping issues and improve transmission efficiency and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If uplink channels/signals are transmitted simultaneously in space-division or frequency-division multiplexing mode, then throughput is improved, but overlapping resolution becomes difficult
Solution Approach 1:
The patent segments reference signal resources into multiple groups (first reference signal resource group and second reference signal resource group). When signals overlap in time domain, the system determines whether they belong to different reference signal resource groups. If they do, both signals are transmitted simultaneously; if not, one signal is dropped. This segmentation enables fine-grained control of signal transmission, resolving overlapping issues while maintaining high throughput through space-division or frequency-division multiplexing.
2Reliability
If time-division multiplexing is used for uplink transmission, then overlapping between uplink channels/signals is resolved, but throughput improvement is limited
Solution Approach 1:
The patent implements a dynamic transmission strategy that adapts to different scenarios. Instead of fixed time-division multiplexing, the system dynamically determines whether to transmit signals simultaneously based on reference signal resource group identification. When resources belong to different groups, space-division or frequency-division multiplexing is applied for higher throughput; when they belong to the same group, time-division multiplexing or signal dropping is applied to resolve overlapping. This dynamic approach optimizes both throughput and overlapping resolution.
3Productivity
If multiple uplink channels/signals are transmitted simultaneously, then transmission efficiency is improved, but power constraints and PAPR are exacerbated
Solution Approach 1:
The patent introduces reference signal resource groups as an intermediary mechanism to manage simultaneous transmissions. By organizing reference signals into distinct groups, the system can identify when signals can be transmitted simultaneously without violating power constraints. The group identification acts as a mediator that enables efficient simultaneous transmission when resources are sufficiently separated, while preventing excessive power consumption when resources overlap, thus optimizing the balance between transmission efficiency and power usage.
Data Source
AI summary
A first node receives a first signaling and a second signaling; transmits a first signal in a first symbol group; and transmits or drops transmitting a second signal in a third symbol group. The first signaling is used to determine the first symbol group, the second signaling is used to determine a second symbol group, and the second symbol group is assigned to the second signal; the third symbol group comprises at least a part of the second symbol group overlapping with the first symbol group; the first signal is associated with a first reference signal resource; the second signal is associated with a second reference signal resource; whether the first node transmits the second signal in the third symbol group is related to whether the first reference signal resource and the second reference signal resource belong to a same reference signal resource group.