RBSYM Resource Model for Multi-Numerology Observability
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Solution Overview
Problem
Existing methods for determining resource utilization in 5G NR systems are inadequate due to the flexibility in resource allocation, making it challenging to accurately track and summarize resource usage across different numerologies and configurations, leading to inaccurate congestion assessments.
Innovation Solution
Introduce a new unit, RBSYM, which represents resource allocation for layer 1 channels and signals, allowing for universal tracking across varying numerologies and configurations, and provide a methodology for accounting resource utilization that includes designated counters for congestion tracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple OFDM numerologies are introduced to support different use cases, then adaptability and versatility are improved, but device complexity and measurement difficulty increase
Solution Approach 1:
The patent segments resource measurement into two distinct components: RBSYM (Resource Block per Symbol) for time-frequency resource quantification and RB-Slot for slot-level resource aggregation. This segmentation allows independent measurement of different resource dimensions across multiple numerologies, resolving the complexity of unified resource tracking while maintaining adaptability for diverse use cases including eMBB, URLLC, and MTC
Solution Approach 2:
The patent introduces RBSYM as an intermediary measurement unit that bridges different OFDM numerologies. By expressing resource allocation in terms of RBSYM (which accounts for varying subcarrier spacings and symbol durations), the system enables consistent resource utilization measurement across diverse numerologies without requiring complex numerology-specific tracking mechanisms
2Adaptability or versatility
If resource allocation is made flexible and dynamic across different numerologies, then adaptability is improved, but measurement precision and reliability deteriorate
Solution Approach 1:
The patent changes the measurement parameters from fixed LTE-style resource units to dynamic RBSYM units that adapt to different numerologies. The RBSYM parameter incorporates subcarrier spacing (Δf) and symbol duration adjustments, enabling precise resource measurement that automatically scales with numerology changes while maintaining consistent measurement semantics across eMBB, URLLC, and MTC scenarios
3Adaptability or versatility
If multiple resource grids with different numerologies are used, then adaptability is improved, but difficulty of detecting and measuring resource utilization increases
Solution Approach 1:
The patent creates a universal measurement framework where RBSYM serves as a multi-functional unit that can measure resource allocation across all numerologies and use cases. The RBSYM definition (accounting for Δf and symbol duration variations) enables a single measurement mechanism to handle diverse resource grids, eliminating the need for separate measurement systems for each numerology while maintaining measurement precision
Data Source
AI summary
According to one or more embodiments, a network node is provided. The network node includes processing circuitry configured to: determine a first resource block per symbol (RBSYM) quantity of a first portion of a frequency-time resource grid; determine a second RBSYM quantity of a second portion of the frequency-time resource grid, the second portion being associated a different Orthogonal Frequency-Division Multiplexing, OFDM, numerology than the first portion; and perform at least one action based at least in part on the first RBSYM quantity and the second RBSYM quantity.