Full Resource Allocation for Reliable Low-Power URLLC Links
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Solution Overview
Problem
Existing link adaptation methods in wireless communication networks, particularly for URLLC, are inadequate in predicting SINR and controlling interference, leading to inefficiencies and increased power consumption, which is exacerbated by increasing interference in dense wireless access points.
Innovation Solution
A proactive link adaptation method, Full Resource Allocation (FRA), that reduces transmission rates and power by leveraging underutilized radio resources, adjusting modulation and coding schemes to ensure target BLER while optimizing resource utilization, thereby reducing interference and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If aggressive link adaptation is used to maximize throughput, then data transmission rate is improved, but interference increases and reliability deteriorates
Solution Approach 1:
The patent performs preliminary identification of underutilized resources before transmission, then proactively allocates these resources to URLLC traffic in advance, ensuring reliable delivery before interference becomes problematic. This preliminary action allows the system to guarantee block error rate targets while maintaining high throughput by pre-positioning transmissions in favorable channel conditions.
2Reliability
If transmission power is increased to improve reliability, then block error rate is reduced, but power consumption increases and interference worsens
Solution Approach 1:
The patent applies different transmission power levels to different resource blocks based on their utilization status. Underutilized resources receive higher power allocations to ensure URLLC reliability, while fully utilized resources maintain standard power levels. This local differentiation ensures reliable delivery on critical resources without unnecessarily increasing overall power consumption and system-wide interference.
3Reliability
If more resources are allocated to ensure reliability, then block error rate guarantee is improved, but resource utilization efficiency decreases
Solution Approach 1:
The patent implements continuous monitoring of resource utilization levels and dynamically adjusts allocations based on feedback from the system state. When underutilized resources are detected, the system reallocates them to URLLC traffic to improve reliability. This feedback-driven approach ensures that resources are efficiently utilized while maintaining the required block error rate guarantees for reliable communications.
4Reliability
If interference control measures are implemented, then system reliability is improved, but transmission rates decrease
Solution Approach 1:
The patent converts the potentially harmful effect of interference into a benefit by identifying and exploiting underutilized resources that experience lower interference levels. Instead of uniformly reducing transmission rates to control interference, the system redirects traffic to resources where interference is naturally lower, thereby maintaining high transmission rates while improving reliability through selective resource allocation.
Data Source
AI summary
A method including: determining a respective first amount of resources each with a respective first power and a non-aggressive MCS such that a target value is guaranteed for a BLER of a transmission to a terminal under a channel estimate of a channel and a SINR estimate; and instructing a transmission device to perform the transmission using the non-aggressive MCS on the first amount of the resources each with the first power, wherein the transmission device may perform hypothetically the transmission using an aggressive MCS on a second amount of the resources each with a respective maximum available power such that the target value is guaranteed for the BLER under the assumed conditions; the first amount of the resources is larger than the second amount of the resources, the respective first power is less than the respective maximum available power.