Priority-Based Sidelink Coordination to Reduce Transmission Interference
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Solution Overview
Problem
Existing sidelink communication systems in wireless networks face challenges in efficiently coordinating resource allocation and data transmission between devices, leading to suboptimal performance and interference.
Innovation Solution
Implementing sidelink inter-UE coordination mechanisms that facilitate coordinated resource selection and information exchange between wireless devices, optimizing transmission parameters to enhance network efficiency and reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sidelink communication is implemented without inter-UE coordination, then device autonomy and simplicity are maintained, but resource utilization efficiency deteriorates and interference increases
Solution Approach 1:
The patent introduces coordination information as an intermediary mechanism between requesting and coordinating UEs. This coordination information, transmitted via PSCCH or PDSCH, serves as a mediator that enables resource allocation optimization without requiring complex direct negotiation between UEs. The coordination information contains resource allocation suggestions that resolve the contradiction by providing structured guidance while maintaining relative simplicity.
Solution Approach 2:
The patent implements a feedback mechanism where coordination information is transmitted from coordinating UE to requesting UE, and acknowledgment information is sent back from requesting UE to coordinating UE. This feedback loop enables continuous optimization of resource allocation, improving resource utilization efficiency while keeping the coordination mechanism manageable through standardized feedback procedures.
2Object-affected harmful factors
If coordination information transmission is implemented, then interference between sidelink transmissions is reduced, but network overhead and processing requirements increase
Solution Approach 1:
The patent applies partial action by implementing coordination only when beneficial - requesting UEs can opt-in to coordination based on their needs, and coordination information is transmitted selectively rather than universally. This approach reduces unnecessary overhead while still providing interference mitigation where it matters most, balancing the trade-off between interference reduction and overhead.
Solution Approach 2:
The coordination mechanism is segmented into distinct functional components: coordination information transmission (via PSCCH or PDSCH), acknowledgment information, and resource allocation decisions. This segmentation allows the system to implement only the necessary coordination functions, reducing overall overhead while maintaining effective interference mitigation through targeted coordination.
3Manufacturing precision
If multiple coordination information transmissions are performed, then resource allocation accuracy is improved, but transmission latency and complexity increase
Solution Approach 1:
The patent implements preliminary action by having coordinating UEs prepare and transmit coordination information in advance of actual data transmission. Resource allocation suggestions are provided beforehand, allowing requesting UEs to plan their transmissions proactively. This reduces the need for multiple iterative exchanges, improving allocation accuracy while minimizing latency through advance planning.
Data Source
AI summary
A wireless device receives a message configuring one or more time intervals for transmitting coordination information to a second wireless device, where the coordination information indicates a set of resources for one or more sidelink transmissions by the second wireless device. The wireless device selects, from the one or more time intervals, a time interval based on at least a priority level of the one or more sidelink transmissions. The wireless device transmits, to the second wireless device, first coordination information indicating a first set of resources for the one or more sidelink transmissions. The wireless device transmits, to the second wireless device and based on the time interval, second coordination information indicating a second set of resources for the one or more sidelink transmissions.