UE Side-Link Resource Configuration for URLLC
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Solution Overview
Problem
Current wireless communication systems lack a method for side-link communication to support ultra-reliable and low latency communication (URLLC) transmission, as existing technologies only focus on grant-free uplink transmission from user equipment (UE) to a base station, without specifying how UEs can perform URLLC transmission via side-link communication.
Innovation Solution
A method for side-link transmission in a wireless communication system where a first UE receives grant-free uplink resources from a base station and configures these resources for other UEs through radio resource control (RRC) signaling, allowing for dynamic adjustment of resource parameters to support URLLC transmission requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If grant-free uplink resources are reserved for URLLC transmission from UE to base station, then low latency communication is achieved, but resource utilization efficiency deteriorates when UE has no data to transmit
Solution Approach 1:
The patent enables UE to autonomously perform side-link transmission for URLLC communication without requiring base station scheduling. The UE self-configures resources and transmits data directly to other UEs, eliminating the need for base station intervention and thereby reducing latency while improving resource utilization efficiency
2Adaptability or versatility
If base station schedules resources through RRC signaling for grant-free uplink transmission, then resource configuration flexibility is improved, but system complexity and signaling overhead increase
Solution Approach 1:
The patent extracts the resource scheduling function from the base station and relocates it to the UE. The UE now independently performs resource configuration and side-link transmission, removing the complex base station scheduling mechanism while maintaining resource configuration flexibility through UE-autonomous RRC signaling
Solution Approach 2:
The UE autonomously configures and manages side-link transmission resources without base station intervention. This self-service approach simplifies the overall system by eliminating base station scheduling complexity while maintaining adaptability through UE-initiated RRC signaling for resource configuration
Data Source
AI summary
A method of side-link transmission for ultra-reliable and low latency communication (URLLC), for a first user equipment (UE) of a wireless communication system is disclosed. The method comprises receiving a radio resource control, RRC, signaling for a first resource configuration, from a second UE of the side-link communication, wherein the second UE receives a grant-free uplink resource reserved for a grant-free uplink transmission, from a base station the wireless communication system, and transmitting a first RRC signal for a second resource configuration, to the second UE when the first resource configuration cannot support requirements of URLLC transmission.