Sidelink Reference Signal Prioritization in Wireless Networks
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Solution Overview
Problem
In wireless communication networks, existing technologies face challenges in prioritizing sidelink reference signals (SL-RSs) when their scheduled resources overlap in the time domain, leading to potential collisions and inefficient channel utilization.
Innovation Solution
A method and device for prioritizing SL-RSs based on predefined rules, allowing a wireless communication device to select one SL-RS for communication within overlapping resources and inform other devices about non-selected SL-RSs, using feedback indications to manage resource allocation and avoid collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sidelink reference signals are transmitted in overlapping time resources, then channel estimation capability is improved, but resource collision and interference increase
Solution Approach 1:
The patent applies parameter changes by modifying the time domain parameters of sidelink reference signals through prioritization rules. When resource overlap is detected, the system changes the transmission parameter of selected SL-RSs by applying prioritization criteria based on resource pool indices, signal types, and cast types, thereby resolving the contradiction between maintaining channel estimation capability and avoiding resource collision interference
Solution Approach 2:
The patent segments the set of overlapping sidelink reference signals into selected and non-selected groups based on prioritization rules. This segmentation allows the system to maintain multiple SL-RS transmissions for channel estimation while systematically selecting specific signals to transmit in overlapping resources, reducing interference through structured division of the signal set
2Adaptability or versatility
If sidelink reference signals are transmitted without prioritization rules, then communication flexibility is maintained, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent introduces dynamic prioritization rules that adaptively select which sidelink reference signals to transmit based on real-time resource overlap conditions. The system dynamically adjusts transmission decisions by evaluating resource pool indices, signal types, and cast types, maintaining communication flexibility while improving resource utilization efficiency through context-aware signal selection
Solution Approach 2:
The patent changes the transmission parameter of sidelink reference signals by applying prioritization criteria. When resource overlap is detected, the system modifies which SL-RSs are transmitted based on parameters such as resource pool index comparisons, signal type priorities, and cast type configurations, thereby improving resource utilization while maintaining adaptability through parameter-based selection
3Measurement precision
If all sidelink reference signals are transmitted simultaneously, then channel state information quality is improved, but device complexity increases
Solution Approach 1:
The patent applies partial action by selecting and transmitting only a prioritized subset of sidelink reference signals when resource overlap occurs, rather than transmitting all configured SL-RSs. This approach maintains sufficient channel state information quality through selective transmission while reducing device complexity by avoiding the management burden of coordinating all simultaneous signals
Solution Approach 2:
The patent implements feedback mechanisms where the transmitting device determines which SL-RSs to transmit based on prioritization rules and informs receiving devices of the selection. This feedback approach manages signal coordination complexity by providing clear transmission decisions to all parties, reducing the need for complex real-time coordination while maintaining channel state information quality
Data Source
AI summary
Aspects relate to prioritizing sidelink reference signals (SL-RSs) when the resources scheduled for two SL-RSs or corresponding reports generated based on SL-RSs at least partially overlap in the time domain. In some examples, the SL-RSs may be prioritized based on at least one prioritization rule associated with the SL-RSs. The prioritization rule(s) enable a wireless communication device to select one of the SL-RSs for communication of a corresponding sidelink communication (e.g., SL-RS or report) within the overlapping resources. The wireless communication device may further transmit a feedback indication indicating whether a sidelink communication was selected or dropped.