D2D Resource Segmentation for Priority Control
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Solution Overview
Problem
Current D2D communication systems in LTE cannot prioritize D2D communications based on user apparatus types, leading to interference issues due to shared resources and congestion, especially in environments with insufficient resources or multiple user apparatuses.
Innovation Solution
A mobile communication system that includes a user apparatus and a base station, where the base station transmits control rules to the user apparatus specifying communication methods based on its type, allowing the user apparatus to determine and apply the appropriate communication method for D2D signal transmission, thereby prioritizing communications and managing resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all user apparatuses share the same D2D communication resources, then resource utilization is simplified, but higher priority cannot be given to specific user apparatus types (e.g., public safety) and interference occurs in congested environments
Solution Approach 1:
The patent segments D2D communication resources by creating distinct resource pools for different user apparatus types (e.g., public safety vs. commercial). This segmentation allows priority control by dedicating specific resources to high-priority users while maintaining manageable complexity through structured allocation rules.
Solution Approach 2:
The patent applies local quality by assigning different communication methods and resource allocation strategies to different user apparatus types based on their specific needs. Public safety apparatus receive guaranteed resources with higher priority, while commercial apparatus use remaining resources, ensuring each type gets appropriate quality of service.
2Productivity
If a small amount of resources is allocated for D2D communications, then resource efficiency is improved, but interference occurs when many user apparatuses attempt to communicate simultaneously
Solution Approach 1:
The patent ensures continuous useful action by maintaining D2D communication capabilities for high-priority public safety apparatus even when overall system resources are limited. Reserved resource pools guarantee that critical communications continue uninterrupted during congestion, while commercial communications adapt to available capacity.
3Reliability
If D2D communication resources are increased, then more user apparatuses can communicate simultaneously, but resource waste occurs when resources are not fully utilized
Solution Approach 1:
The patent introduces dynamics by allowing resource allocation to be flexible and adaptive. Commercial user apparatus can dynamically access resources when public safety apparatus are not actively transmitting, while public safety apparatus have guaranteed access when needed. This dynamic sharing optimizes overall utilization without compromising reliability.
Data Source
AI summary
A user apparatus is provided. The user apparatus is used in a mobile communication system in which D2D communications are supported. The user apparatus includes an obtaining unit configured to obtain from a base station control rules including predetermined communication methods applied to corresponding user apparatus types; a determination unit configured to determine which of the predetermined communication methods is to be applied to the user apparatus by comparing a type of the user apparatus and the control rules; and a transmission unit configured to transmit a D2D signal based on the determined predetermined communication method.