Inter-UE Coordination Signaling for Sidelink Resource Collisions
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Solution Overview
Problem
V2X systems face challenges with increased power consumption and battery life degradation due to high communication demands, particularly in power-limited UE devices, leading to decreased battery life and communication latency.
Innovation Solution
Implement methods for triggering and signaling of inter-UE coordination messages to optimize resource allocation in V2X Mode 2, allowing for more efficient power management and reduced latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If V2X systems implement high communication demands to coordinate traffic activity and facilitate autonomous driving, then communication reliability and coordination capability are improved, but power consumption increases and battery life decreases
Solution Approach 1:
The patent implements preliminary actions by having UEs pre-select and reserve communication resources before actual data transmission. The UE determines a set of resources for transmitting inter-UE coordination messages and notifies the second UE of these resources in advance, allowing the system to prepare communication channels proactively, reducing the need for continuous power-intensive re-negotiation and improving reliability while managing power consumption.
Solution Approach 2:
The patent enables self-service through autonomous UE behavior where devices independently select resources and transmit coordination messages without continuous network intervention. The UE autonomously determines resources, notifies other UEs, and manages its own coordination messages, reducing dependency on power-intensive network-controlled resource allocation while maintaining communication reliability.
2Loss of time
If V2X systems increase communication frequency to reduce latency and improve response time, then communication speed is improved, but battery life decreases due to increased power consumption
Solution Approach 1:
The patent reduces latency through preliminary action by pre-determining and notifying resource allocations before data transmission is needed. The UE selects resources in advance and notifies the second UE, so when data needs to be transmitted, the channel is already reserved and ready, eliminating negotiation delays while avoiding continuous communication that would drain the battery.
Solution Approach 2:
The patent implements periodic action through semi-persistent scheduling where resources are allocated for fixed periods rather than continuously. This allows the UE to communicate efficiently during allocated periods while entering low-power states between transmissions, reducing overall power consumption while maintaining responsive communication when needed.
3Productivity
If V2X systems implement inter-UE coordination message transmission to optimize resource allocation, then resource allocation efficiency is improved, but device complexity increases
Solution Approach 1:
The patent extracts the complex resource allocation function from centralized network control and places it at the edge devices (UEs). Each UE independently determines its own resources and coordinates with other UEs directly, removing the need for complex network-side resource management while improving allocation efficiency through distributed decision-making.
Solution Approach 2:
The patent introduces inter-UE coordination messages as intermediaries that carry resource allocation information between devices. These messages serve as a simple protocol layer that enables complex resource coordination without requiring complex device logic, as the coordination rules are standardized and automated through the message exchange mechanism.
Data Source
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AI summary
Apparatuses, systems, and methods for triggering and signaling of an inter-UE coordination message. A coordinating UE may determine to transmit, to a source UE, a set of resources for the source UE to use for sidelink communications. The determination may be based, at least in part, on an occurrence of at least one condition. The at least one condition may include the coordinating UE receiving a sidelink coordination request message form the source UE, the coordinating UE detecting a resource reservation collision between the source UE and a destination UE, and/or the coordinating UE detecting a half-duplex restriction at the source UE or the destination UE. The coordinating UE may transmit an inter-UE coordination message to the source UE. The inter-UE coordination message may include at least an indication of the set of resources.