Sidelink Positioning Reference Signal Coordination Information Forwarding
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Solution Overview
Problem
In wireless communication networks, especially with the increasing demand for mobile broadband access and the deployment of 5G NR networks, there is a challenge in efficiently scheduling sidelink positioning reference signals (SL-PRS) to avoid collisions and optimize resource usage.
Innovation Solution
A method where user equipment (UE) generates and transmits coordination information associated with SL-PRS scheduling, indicating preferred and non-preferred resources, as well as previous and future conflicts, to facilitate improved scheduling and collision avoidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple UEs transmit SL-PRS signals simultaneously to enable sidelink positioning, then positioning capability is improved, but signal collisions and interference increase
Solution Approach 1:
The patent applies preliminary action by having UEs perform sensing before transmitting SL-PRS signals. Each UE senses the channel to identify time resources that do not conflict with other UEs' transmissions, allowing collision avoidance before the actual signal transmission occurs. This enables multiple UEs to transmit simultaneously without interference by pre-coordinating their time resource selections.
2Device complexity
If UEs independently schedule SL-PRS transmissions without coordination, then device complexity is reduced, but scheduling efficiency and collision avoidance deteriorate
Solution Approach 1:
The patent implements self-service by enabling UEs to autonomously perform sensing and scheduling without requiring complex centralized coordination or network intervention. Each UE independently senses the channel, identifies non-conflicting time resources, and selects appropriate transmission slots based on local conditions. This distributed self-service approach eliminates the need for complex scheduling algorithms while achieving high scheduling efficiency and effective collision avoidance.
3Reliability
If UEs transmit coordination information messages to improve scheduling, then collision avoidance is improved, but message transmission overhead increases
Solution Approach 1:
The patent applies partial action by having UEs transmit coordination information messages only when necessary, rather than continuously. UEs sense the channel and determine whether to send coordination messages based on current transmission conditions. This selective messaging approach reduces unnecessary overhead while maintaining effective collision avoidance when needed, achieving a balance between reliability and message quantity.
Data Source
AI summary
This disclosure provides systems, methods, and devices for wireless communication that support coordination information associated with sidelink positioning reference signals. In a first aspect, a method of wireless communication includes generating, by a user equipment (UE), coordination information associated with sidelink-positioning reference signal (SL-PRS) scheduling, and transmitting a message including the coordination information. Other aspects and features are also claimed and described. In a second aspect, a method of wireless communication includes receiving, by a UE, a message including coordination information associated with SL-PRS scheduling, and determining whether to forward at least a portion of the message based on forwarding information included in the first message.