Sidelink Resource Coordination via Priority and Power Thresholds
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently coordinating sidelink communications between user equipment (UEs) to achieve high reliability and low latency, particularly in scenarios like vehicle-to-everything (V2X) and device-to-device (D2D) systems, where resource allocation and priority management are complex.
Innovation Solution
The described techniques enable UEs to receive and share resource information, including priority levels and reference signal received power thresholds, to determine optimal time and frequency resources for sidelink transmissions, allowing for efficient coordination and reduced latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UEs share detailed resource information including priority levels and power thresholds, then coordination reliability improves, but communication overhead and latency increase
Solution Approach 1:
The patent extracts only the essential elements needed for coordination (priority levels, power thresholds, resource allocations) from the complete resource information, transmitting only these critical parameters rather than full resource maps. This reduces the amount of data exchanged while maintaining the reliability needed for safe coordination in V2X and D2D communications.
Solution Approach 2:
The patent establishes preliminary coordination agreements and resource reservation indicators in advance, allowing UEs to pre-negotiate and reserve resources before actual transmission. This preliminary action reduces the need for real-time information exchange during critical transmission windows, thereby reducing latency while maintaining coordination reliability.
2Productivity
If UEs monitor control information of other nearby UEs to generate resource information, then resource allocation efficiency improves, but processing complexity and energy consumption increase
Solution Approach 1:
The patent applies local quality by having each UE generate and share resource information tailored to its specific local context and requirements. Instead of all UEs processing and sharing complete system-wide resource maps, each UE creates localized resource information relevant to its immediate coordination needs, reducing processing complexity while maintaining allocation efficiency.
Solution Approach 2:
The patent implements partial action by having UEs monitor and process only the subset of control information from other UEs that is relevant to their specific resource allocation decisions. Rather than processing all available control information from all nearby UEs, each UE selectively processes only the necessary portions, reducing computational complexity while maintaining efficient resource allocation.
3Productivity
If UEs use priority levels to determine transmission resources, then spectral efficiency improves, but the complexity of priority management and resource coordination increases
Solution Approach 1:
The patent uses parameter changes by dynamically adjusting priority levels and associated power thresholds based on real-time channel conditions, traffic demands, and coordination requirements. This allows the system to maintain high spectral efficiency through priority-based resource allocation while adapting the complexity of priority management to match actual system needs rather than using fixed complex priority schemes.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A device (such as a first user equipment (UE)) may communicate control signaling indicating a resource allocation for a sidelink channel. The first UE may receive, from a second UE, a first resource map. The first resource map may indicate a first sidelink transmission scheduled within a first time and frequency resource of the resource allocation, a first priority level of the first resource map, and a parameter threshold used to generate the first resource map. In some cases, the first UE may communicate a second sidelink transmission within the resource allocation for the sidelink channel based on the first resource map.