Dynamic Resource Allocation for Low-Latency and Latency-Tolerant Traffic Coexistence
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Solution Overview
Problem
Modern wireless networks face challenges in accommodating diverse traffic types with different latency and throughput requirements, such as interactive video and online gaming, as existing methods struggle to efficiently co-exist and allocate resources effectively for low-latency and latency-tolerant communications.
Innovation Solution
A method and system that allow low-latency and latency-tolerant communication resources to co-exist within the same time-frequency resource region by reserving specific regions for different types of traffic, using different OFDM numerologies and dynamically allocating unused resources, with control signaling indicating resource usage to ensure efficient multiplexing and resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If time-frequency resources are reserved for low-latency traffic, then low-latency communication quality is improved, but resource utilization efficiency deteriorates when low-latency traffic is not present
Solution Approach 1:
The patent implements dynamic resource allocation where resources reserved for low-latency traffic can be dynamically reassigned to latency-tolerant traffic when low-latency traffic is not present. The network device determines whether to allocate reserved resources based on real-time traffic conditions, transforming static reserved resources into dynamic flexible resources that adapt to actual network demands.
Solution Approach 2:
The patent changes the state parameter of resource allocation from fixed to variable. By introducing a determination mechanism that adjusts resource allocation based on traffic presence, the system transforms the parameter of resource assignment from a constant reserved state to a conditional variable state, optimizing both latency performance and resource efficiency.
2Reliability
If separate resources are allocated for different traffic types, then quality of service for each traffic type is ensured, but system complexity increases
Solution Approach 1:
The patent makes communication resources multi-functional by enabling the same resources to serve both low-latency and latency-tolerant traffic types. Instead of maintaining separate dedicated resources for each traffic type, the system uses a single resource pool that can be flexibly allocated to different traffic types based on immediate needs, reducing system complexity while maintaining QoS guarantees.
Solution Approach 2:
The patent segments the resource allocation decision process rather than segregating resources physically. The determination of whether to allocate reserved resources is divided into conditional logic that evaluates traffic conditions and makes allocation decisions, allowing logical segmentation of resource usage without physical resource duplication.
3Productivity
If resources are dynamically reallocated from low-latency to latency-tolerant traffic, then resource utilization efficiency is improved, but latency performance may deteriorate when low-latency traffic arrives
Solution Approach 1:
The patent prepares reserved resources in advance for low-latency traffic before they are actually needed. By pre-allocating and maintaining resources in a ready state for low-latency traffic, the system ensures that when low-latency traffic arrives, resources are immediately available without requiring reallocation delays, thus preventing latency performance deterioration.
Solution Approach 2:
The patent implements a feedback mechanism where the network device continuously monitors traffic conditions and adjusts resource allocation accordingly. When low-latency traffic is detected, the system feedbacks to maintain reserved resource allocation; when no low-latency traffic is present, it feedbacks to reallocate resources to latency-tolerant traffic, creating a closed-loop control system that balances efficiency and latency performance.
Data Source
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AI summary
A system and method for wireless communications using resources allocated for different types of traffic that co-exist in the same transmission interval. In one embodiment， first data of a first type of traffic is scheduled in resources that are pre-reserved for a second type of traffic. Control signaling may be used to indicate whether the first type of traffic is scheduled in the resources pre-reserved for the second type of traffic.