Cell Cluster Access Opportunity Patterns for Low Latency URLLC
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Solution Overview
Problem
Current communication networks face challenges in providing low latency and high reliability, particularly in scenarios like 5G systems where ultra-reliable and low-latency communications (URLLC) are required, as existing solutions lead to inefficient resource utilization and high signaling overhead, and are not optimized for on-demand support.
Innovation Solution
The solution involves configuring a subset of cells within a cluster to provide an access opportunity pattern with increased frequency and reliability, allowing user equipment to select the next available access opportunity, and dynamically managing cell states to ensure low-latency access, using coordination among cells to form high availability patterns (HAPs) tailored to individual user equipment needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If access opportunities are provided frequently to reduce latency, then low-latency access is improved, but network reliability and resource utilization efficiency deteriorate
Solution Approach 1:
The patent segments the network into different cell types (first cells and second cells) with different access opportunity patterns. First cells provide frequent access opportunities for low-latency URLLC traffic, while second cells provide reliable access opportunities for general traffic. This segmentation allows the system to optimize for low latency without sacrificing overall network reliability by directing different traffic types to appropriate cells.
Solution Approach 2:
The patent applies local quality by providing different access opportunity characteristics to different cells based on their specific functions and traffic requirements. Each cell is configured with appropriate access opportunity patterns tailored to its role in the network, allowing URLLC traffic to receive frequent access opportunities while other traffic receives reliable but less frequent access opportunities.
2Loss of time
If access opportunities are provided frequently to reduce latency, then low-latency access is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent segments access opportunities into different patterns for different cell types. First cells with frequent access opportunities serve URLLC traffic with low latency requirements, while second cells with less frequent access opportunities serve other traffic types. This segmentation optimizes resource utilization by matching access frequency to actual traffic needs rather than providing uniform frequent access to all cells.
Solution Approach 2:
The patent applies partial action by providing frequent access opportunities only to the extent necessary for URLLC traffic in first cells, rather than providing frequent access to all cells uniformly. This partial application of frequent access patterns optimizes resource utilization by concentrating resources where they are most needed for low-latency services.
3Reliability
If high reliability access is provided to all cells, then access reliability is improved, but access latency increases
Solution Approach 1:
The patent segments cells into first cells optimized for low latency with frequent access opportunities and second cells optimized for reliability with appropriate access patterns. This segmentation allows URLLC traffic to experience low latency by accessing first cells, while other traffic maintains reliability through second cells, preventing the latency-reliability trade-off from affecting all traffic uniformly.
Solution Approach 2:
The patent implements local quality by configuring different access opportunity patterns in different cells based on their specific service requirements. First cells provide frequent access for low-latency URLLC traffic, while second cells provide reliable access for other traffic types, allowing each cell to optimize its characteristics for its specific function rather than uniform configuration.
4Reliability
If cell cluster coordination is implemented for high availability patterns, then access reliability is improved, but device complexity increases
Solution Approach 1:
The patent segments the cell cluster into first cells and second cells with distinct access opportunity patterns, simplifying the coordination complexity by dividing the management task into separate, well-defined groups. Each cell type follows a specific pattern, reducing the complexity of coordinating access across the entire cluster compared to uniform management.
Solution Approach 2:
The patent applies preliminary action by pre-configuring access opportunity patterns for first and second cells before traffic arrives. The network node prepares and assigns appropriate access patterns in advance, reducing the complexity of real-time coordination and decision-making during actual traffic handling.
Data Source
AI summary
According to an example aspect of the present invention, there is provided an apparatus comprising a memory configured to store an indication that the apparatus requires reliable and/or low-latency access to a network, and at least one processing core configured to process an access opportunity pattern, received in the apparatus from a network node, the access opportunity pattern comprising access opportunities provided by a subset of a cluster of cells, detectable by the apparatus, and to trigger for the apparatus reliable and/or low-latency access to the network by selecting from the pattern an access opportunity according to the received access opportunity pattern.