Dynamic PUCCH PRB Allocation Using RRC Arrival Rates
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Solution Overview
Problem
Current dynamic PUCCH algorithms fail to consider traffic arrival rate, leading to increased congestion and delayed resource allocation, which affects throughput and latency in wireless communication systems.
Innovation Solution
Implement dynamic PUCCH resource modification based on the rate of PUCCH resource allocation, using thresholds to adjust PUCCH PRBs dynamically to manage congestion by considering the net rate of PUCCH resource allocation and the rate of change in RRC connected wireless devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If PUCCH PRBs are allocated dynamically based on available resources, then resource utilization is improved, but response time increases due to PRACH relocation and SIB rebroadcast delays
Solution Approach 1:
The patent pre-calculates and stores multiple PUCCH resource configurations corresponding to different traffic arrival rates before congestion occurs. When congestion is detected, the system can immediately switch to a pre-configured resource allocation pattern without needing to relocate PRACH or rebroadcast SIBs, thereby reducing the response time from seconds to much faster intervals.
Solution Approach 2:
The system dynamically adjusts PUCCH resource allocation based on real-time traffic arrival rate monitoring. By continuously measuring the rate of RRC connected device arrivals and comparing against thresholds, the system adapts resource allocation in real-time rather than using static configurations, resolving the contradiction between having enough resources and responding quickly.
2Productivity
If PUCCH PRBs are increased to handle high traffic arrival rates, then system capacity is improved, but congestion occurs during the allocation delay period
Solution Approach 1:
The patent prepares multiple resource allocation configurations in advance, each optimized for different traffic arrival rate scenarios. When the traffic arrival rate exceeds a threshold, the system immediately activates a pre-configured high-capacity allocation pattern, preventing congestion during the transition period rather than reacting after congestion has already occurred.
Solution Approach 2:
The system continuously monitors the traffic arrival rate of RRC connected devices and uses this feedback to dynamically adjust PUCCH resource allocation. By comparing the measured arrival rate against predefined thresholds, the system can proactively increase resources before congestion occurs, or quickly respond to prevent further congestion, thereby maintaining system throughput while avoiding the harmful effects of congestion.
3Loss of time
If resource allocation signaling is simplified for faster response, then response time is improved, but resource allocation precision deteriorates
Solution Approach 1:
The patent pre-configures multiple PUCCH resource allocation patterns with different resource quantities, each optimized for specific traffic arrival rate ranges. This allows the system to quickly select an appropriate pre-configured pattern based on current traffic conditions without needing to perform complex real-time calculations, thereby maintaining both fast response time and accurate resource allocation.
Solution Approach 2:
The system changes the parameter of traffic arrival rate threshold to dynamically select among pre-configured resource allocation patterns. By monitoring whether the traffic arrival rate exceeds certain thresholds, the system can switch between different resource allocation configurations, achieving both rapid response and precise resource allocation matched to actual traffic conditions.
Data Source
AI summary
A method, system and apparatus are disclosed. In one or more embodiments, a network node is provided. The network node includes processing circuitry configured to: determine an indication of a rate of change of radio resource control, RRC, connected wireless devices; and determine whether to modify a physical uplink control channel, PUCCH, physical resource block, PRB, allocation based at least on the rate of change of RRC connected wireless devices.