Wireless Communication Survival Time for Relaxed URLLC QoS
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Solution Overview
Problem
The stringent Quality of Service (QoS) requirements in ultra-reliable low-latency communication (URLLC) pose challenges, and there is a need to relax certain reliability requirements to improve spectral efficiency and resource allocation in wireless communication systems.
Innovation Solution
The introduction of a survival time parameter that allows applications to continue functioning without anticipated messages for a specified period, enabling techniques such as resource allocation adjustments, connection reconfiguration, and packet duplication based on this parameter to maintain QoS within relaxed reliability bounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If stringent QoS requirements are maintained in URLLC, then reliability is improved, but spectral efficiency and resource allocation deteriorate
Solution Approach 1:
The patent introduces a survival time parameter that changes the QoS requirements from strict reliability bounds to relaxed bounds characterized by survival time. This parameter change allows the system to accept packet losses within certain time windows, thereby improving spectral efficiency while maintaining acceptable service quality through dynamic adaptation rather than rigid requirement enforcement
2Productivity
If reliability requirements are relaxed, then spectral efficiency is improved, but QoS service quality deteriorates
Solution Approach 1:
The patent implements dynamic adaptation mechanisms where the survival time parameter is continuously monitored and used to trigger reconfiguration events. The system dynamically adjusts resource allocation and connection parameters based on actual survival time performance, allowing the service quality to adapt to relaxed reliability requirements while maintaining acceptable performance through real-time optimization
3Productivity
If survival time parameter is introduced, then resource allocation is improved, but device complexity increases
Solution Approach 1:
The patent introduces a survival time monitoring mechanism that acts as an intermediary between the QoS requirements and resource allocation decisions. This intermediary component tracks packet loss patterns and triggers appropriate resource adjustments, simplifying the overall system architecture by providing a clear, measurable parameter that mediates between service quality requirements and spectral efficiency goals
Data Source
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AI summary
Methods, apparatus, and systems that use the survival time parameter to relax Quality of Service (QoS) reliability requirements in communication services are disclosed. In one example aspect, a wireless communication method includes triggering, by a wireless device, a report to a radio access node due to occurrence of a condition of a survival time associated with a communication service. The survival time represents an amount of time an application consuming the communication service is capable of continuing without receiving any anticipated message. The survival time can indicate a number of consecutive incorrectly received or lost packets.