Sidelink Resource Allocation via Inter-UE Coordination Signaling
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Solution Overview
Problem
In 5G communication systems, the existing sidelink resource allocation methods, such as mode 2, face challenges like increased power consumption and reduced efficiency due to resource sensing and selection operations, especially for terminals with limited power and resource sensing capabilities, and are affected by issues like the hidden node and exposed node problems.
Innovation Solution
The proposed solution involves a method for allocating sidelink resources based on inter-user equipment (UE) coordination information, where UE-A receives signaling from UE-B, determines the type of resources, generates inter-UE coordination information, and transmits it back, allowing UE-B to identify preferred or non-preferred resources for efficient sidelink communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If mode 2 sidelink resource allocation is used with resource sensing and selection operations, then transmitting terminals can autonomously determine sidelink resources, but power consumption increases and resource allocation efficiency decreases
Solution Approach 1:
The patent introduces a base station as an intermediary to assist transmitting terminals in resource selection. The base station receives sensing results from terminals and provides recommended resources, reducing the computational burden and power consumption at the terminal while maintaining autonomous operation capability.
Solution Approach 2:
The patent implements a feedback mechanism where transmitting terminals send sensing results to the base station, and the base station responds with recommended resource allocations. This feedback loop enables optimized resource selection without requiring full autonomous sensing capabilities at the terminal, thereby reducing power consumption.
2Ease of operation
If mode 2 sidelink resource allocation is used with resource sensing and selection operations, then transmitting terminals can autonomously determine sidelink resources, but resource allocation efficiency decreases due to hidden node and exposed node problems
Solution Approach 1:
The base station acts as a mediator that collects sensing information from multiple terminals and coordinates resource allocation to resolve hidden node and exposed node problems. By centralizing the sensing result processing, the system can make more informed resource allocation decisions that improve overall efficiency.
Solution Approach 2:
The patent merges the sensing operations and resource selection decisions by having terminals share sensing results with the base station. This combination of distributed sensing with centralized decision-making improves resource allocation efficiency by avoiding the limitations of purely autonomous terminal-based selection.
3Ease of operation
If transmitting terminals perform resource sensing and selection operations, then they can determine sidelink resources autonomously, but terminals with limited power capacity and sensing capability cannot perform these operations
Solution Approach 1:
The base station serves as an intermediary that performs the complex sensing and selection operations on behalf of terminals with limited capabilities. These terminals can still achieve autonomous resource determination through the base station's assistance, making the system adaptable to devices with varying power and processing capabilities.
Solution Approach 2:
The patent creates a universal resource allocation mechanism that works for both capable and limited-capability terminals. The base station provides a multi-functional solution that can handle full autonomous operation for capable terminals and assisted operation for limited-capability terminals, ensuring broad system compatibility.
Data Source
AI summary
A method and device for allocating resources based on inter-UE adjustment information in sidelink communication comprises receiving, from a second user-equipment, signaling #1 triggering transmission of inter-UE adjustment information, determining the type of resource to be notified to the second user-equipment, based on an information element included in the signaling #1, selecting a resource having the determined type, generating the inter-UE adjustment information comprising information indicating the selected resource, and transmitting, to the second user-equipment, signaling #2 comprising the inter-UE adjustment information.