Multi-operator D2D Multicast via Cluster Head Spectrum Allocation
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Solution Overview
Problem
Current solutions for device-to-device broadcasting and multicasting in LTE networks do not effectively address multi-operator scenarios where devices are subscribed to different mobile operators, leading to challenges in radio resource allocation and interference management.
Innovation Solution
The system enables multi-operator device-to-device broadcasting and multicasting by allowing terminals from different networks to form local clusters and dynamically allocate spectrum resources using spectrum hopping, selection, or joint spectrum and radio access technology selection, ensuring efficient communication without relying solely on network infrastructure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If device-to-device broadcasting and multicasting is implemented in LTE networks, then communication efficiency between devices is improved, but radio resource allocation and interference management become complex in multi-operator scenarios
Solution Approach 1:
The patent introduces a cluster head as an intermediary device that coordinates communication between multiple user equipment. The cluster head manages radio resource allocation and interference coordination for devices within its cluster, reducing the overall system complexity while maintaining efficient device-to-device communication. This mediator approach allows distributed devices to communicate effectively without each device needing to manage complex resource allocation independently.
2Use of energy by moving object
If devices from different operators form local clusters for D2D communication, then spectrum usage efficiency is improved, but interference management between operators becomes challenging
Solution Approach 1:
The patent applies local quality by allowing different interference management strategies to be applied to different clusters based on their specific operator compositions and environmental conditions. Each cluster can dynamically adjust its transmission parameters and resource allocation locally, optimizing spectrum usage while managing interference specific to that cluster's context rather than applying a uniform approach across all operators.
Solution Approach 2:
The patent utilizes parameter changes by dynamically adjusting transmission power, resource block allocation, and modulation schemes based on real-time channel conditions and interference levels. This allows the system to adapt to changing spectral conditions and interference patterns, maintaining efficient spectrum usage while mitigating inter-operator interference through continuous parameter optimization.
3Object-affected harmful factors
If spectrum hopping is used for multi-operator D2D communication, then interference minimization is improved, but device complexity and computational requirements increase
Solution Approach 1:
The patent implements preliminary action by pre-configuring spectrum hopping patterns and resource allocation strategies during cluster formation. Instead of computing optimal hopping sequences in real-time, the system establishes predetermined patterns that reduce interference while minimizing the computational burden on devices during active communication, thus lowering device complexity while maintaining interference mitigation benefits.
Data Source
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AI summary
The invention provides a solution for device-to-device broadcasting or multicasting in a multi- operator environment. When a group of terminals from different networks would like to engage in a device-to-device broadcast or multicast type of communications, the necessary information for spectrum and resource allocation and configuration is collected by a system having a decision logic to select one or more frequency bands and/or a radio access technology to be used for the device-to-device broadcasting or multicasting of the signal. The system transmits configuration data reflecting the selection to the group of terminals to configure the terminals to use the frequency band(s) and/or radio access technology.