RIS Sharing Suspension for Congestion-Aware Base Station Coordination

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Solution Overview

Problem

The challenge of efficiently utilizing Reconfigurable Intelligent Surfaces (RIS) in millimeter wave communication systems is exacerbated by congestion and resource inefficiencies, particularly in overlapping coverage areas of multiple base stations, leading to communication quality degradation and link interruptions.

Innovation Solution

A system and method for negotiating and suspending the sharing of RIS between neighboring base stations, allowing for dynamic adjustment of RIS usage based on individual requirements, including suspension and resumption processes to optimize resource allocation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If multiple base stations share RIS resources in overlapping coverage areas, then resource utilization efficiency is improved, but communication quality deteriorates due to congestion and interference

Engineering Contradiction:

ImproveRIS resource utilization efficiencyVSAvoidcommunication quality

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent implements dynamic RIS sharing suspension mechanisms where base stations can adjust their RIS usage in real-time based on communication quality metrics. The system transitions from static resource allocation to dynamic control, allowing base stations to suspend or resume RIS sharing operations according to changing channel conditions and interference levels, thereby resolving the contradiction between resource utilization and communication quality.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent establishes feedback loops where base stations monitor communication quality metrics and resource utilization status, then adjust RIS sharing configurations accordingly. The network management entity receives status reports and coordinates suspension/resumption decisions based on aggregated feedback from multiple base stations, enabling the system to adapt to congestion conditions and maintain communication quality while optimizing resource usage.

Inventive Principle:

Principle #23Feedback

2Reliability

If RIS sharing is suspended between base stations, then communication quality is improved by reducing congestion, but resource utilization efficiency deteriorates due to idle RIS periods

Engineering Contradiction:

Improvecommunication qualityVSAvoidRIS resource utilization efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent implements periodic RIS sharing suspension and resumption cycles based on monitored communication quality thresholds. Instead of permanent suspension, the system employs time-periodic sharing patterns where RIS resources are alternately shared and suspended in controlled intervals, allowing the system to periodically clear congestion while maintaining overall resource utilization through structured cycling of sharing operations.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent enables base stations to temporarily discard (suspend) RIS sharing rights during congestion periods and recover them when conditions improve. The suspension mechanism allows base stations to relinquish RIS usage temporarily to alleviate congestion, then recover the sharing rights and resume normal operations once communication quality metrics indicate improved conditions, thus balancing quality and efficiency.

Inventive Principle:

Principle #34Discarding and recovering

3Adaptability or versatility

If RIS sharing configuration is made flexible and dynamic, then adaptability to changing needs is improved, but system complexity increases due to negotiation and coordination overhead

Engineering Contradiction:

ImproveRIS usage adaptabilityVSAvoidsharing negotiation complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent introduces a network management entity as an intermediary that centralizes the coordination of RIS sharing suspension and resumption operations. Instead of direct peer-to-peer negotiations between multiple base stations, the network management entity mediates all sharing decisions, simplifies the coordination protocol, and manages the state information, thereby reducing the overall system complexity while maintaining flexible and adaptive RIS usage configurations.

Inventive Principle:

Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enhances the efficiency and flexibility of RIS utilization, improving communication quality and coverage by allowing base stations to adapt RIS usage according to changing needs, thereby mitigating congestion and resource idle periods.

Implementation Method 1

reflection-based communication element

Methodology Applied

Scientific EffectReflection: Reflection

Data Source

PatentUS12587239B2Systems and methods using reflection-based communication elements

Publication Date: 2026.03.24 ZTE CORP

AI summary

Embodiments of a system, device and method for suspending sharing of a reflection-based communication element. In some aspects, a wireless communication method includes sending, by a first wireless communication node to a second wireless communication node, a first message to suspend sharing of a reflection-based communication element between the first wireless communication node and the second wireless communication node, wherein the reflection-based communication element keeps sharing configuration parameters from the first wireless communication node and the second wireless communication node.