Fixed Wireless Access Prescheduling for Low-Latency Tiered Traffic
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional cellular and Internet networking fail to adjust rapidly to changes in uplink and downlink data rates while meeting strict latency requirements, especially for applications like extended reality and augmented-reality wearable devices.
Innovation Solution
Implementing uplink and downlink prescheduling in fixed wireless access networks, where a base station proactively allocates resources using blind grants for uplink data and dynamic scheduling for downlink data to manage network congestion and meet latency and throughput demands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional cellular networking is used, then network infrastructure is simple, but the network cannot adjust rapidly to changes in data rates while meeting strict latency requirements
Solution Approach 1:
The base station performs preliminary scheduling actions by proactively allocating uplink resources using blind grants before actual data transmission occurs. This preliminary resource allocation enables rapid adaptation to changing data rates without requiring complex real-time scheduling decisions, thus improving network adaptability while managing scheduling complexity through advance preparation.
Solution Approach 2:
The system implements dynamic scheduling for downlink data transmission, allowing the base station to flexibly adjust resource allocation based on real-time network conditions and subscriber requirements. This dynamic approach enables the network to rapidly respond to changing data rates and latency requirements while maintaining manageable complexity through structured control mechanisms.
2Loss of time
If uplink prescheduling with blind grants is implemented, then uplink latency is reduced, but network congestion management becomes more challenging
Solution Approach 1:
The base station applies different scheduling strategies to different subscribers based on their subscription tiers and individual requirements. High-priority subscribers receive blind grants for low-latency uplink transmission, while the base station uses dynamic scheduling for downlink transmission to manage congestion. This localized differentiation of scheduling quality enables latency reduction for critical traffic while maintaining reliable congestion control through priority-based management.
3Adaptability or versatility
If dynamic scheduling is used for downlink data, then network flexibility is improved, but scheduling overhead increases
Solution Approach 1:
The base station performs preliminary resource allocation for uplink transmission using blind grants, which reduces the need for continuous real-time scheduling decisions for downlink data. This preliminary action lowers the scheduling overhead while maintaining flexibility through dynamic scheduling for downlink transmission, thus improving adaptability without proportionally increasing scheduling complexity.
Data Source
AI summary
A base station receives a request from a fixed wireless access network for uplink and downlink prescheduling. Blind grants for uplink data are sent to multiple subscriber units. The fixed wireless access network implements dynamic scheduling of downlink data. The uplink data is received from the multiple subscriber units based on the blind grants. The downlink data is sent to the multiple subscriber units using dynamic scheduling. Presence of congestion on a physical uplink shared channel (PUSCH) or a physical downlink shared channel (PDSCH) of the fixed wireless access network is determined. The uplink and downlink prescheduling for a first one or more subscriber units is terminated. The first one or more subscriber units is associated with a first subscription tier. The uplink and downlink prescheduling is continued for a second one or more subscriber units associated with a second subscription tier higher than the first subscription tier.