D2D Resource Configuration via Segmented Control Modes
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Solution Overview
Problem
Current technologies lack a systematic and complete solution for Device-to-Device (D2D) resource allocation methods, particularly for specific D2D User Equipments (UEs), which are essential for efficient D2D communication and discovery in cellular networks.
Innovation Solution
A D2D resource configuration method where a UE receives configuration information from a D2D control node, allowing it to configure resources for D2D communication and discovery, including resource allocation modes, validity periods, and priority settings, enabling flexible and efficient resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If D2D resources are allocated through base station control (Mode 1), then resource allocation efficiency is improved, but network infrastructure dependency increases
Solution Approach 1:
The patent segments resource allocation into two distinct modes: Mode 1 where base station controls resource allocation for UEs in coverage, and Mode 2 where UEs autonomously select resources from pre-configured pools for out-of-coverage scenarios. This segmentation allows the system to optimize for control efficiency when infrastructure is available while reducing dependency when it is not.
Solution Approach 2:
The patent implements dynamic resource allocation modes that can switch between centralized (base station-controlled) and distributed (UE-autonomous) allocation based on coverage conditions. The eNB can dynamically configure resource pools and switch UEs between modes, making the system adaptable to changing network conditions and infrastructure availability.
2Device complexity
If D2D resources are allocated autonomously by UEs (Mode 2), then network infrastructure dependency is reduced, but resource allocation precision deteriorates
Solution Approach 1:
The patent applies preliminary action by having the base station pre-configure resource pools with specific parameters (time resources, frequency resources, spatial parameters) before UEs need them. This pre-configuration ensures that when UEs autonomously select resources in Mode 2, they choose from pre-validated options that maintain allocation precision without requiring real-time base station intervention.
Solution Approach 2:
The patent introduces pre-configured resource pools as an intermediary between centralized control and autonomous selection. These pools act as a mediator that encapsulates base station-defined allocation rules and parameters, allowing UEs to autonomously select resources while indirectly following centralized allocation principles, thus maintaining precision without direct infrastructure dependency.
3Adaptability or versatility
If D2D resource pools are pre-configured with multiple parameters, then resource management flexibility is improved, but configuration complexity increases
Solution Approach 1:
The patent segments resource pool configuration into distinct parameter categories: time resources (subframes, slots), frequency resources (resource blocks, bandwidth), and spatial parameters (beam directions, antenna ports). This segmentation allows the system to manage complexity by organizing numerous parameters into structured, manageable groups that can be independently configured and optimized.
Solution Approach 2:
The patent creates universal resource pool configurations that can serve multiple D2D functions (discovery, communication, relay) and multiple UE scenarios (in-coverage, out-of-coverage, partial coverage). By designing resource pools with comprehensive parameters that accommodate various use cases, the system achieves flexibility without requiring separate configurations for each scenario, reducing overall complexity.
Data Source
AI summary
Device-to-Device (D2D) resource configuration or allocation methods and apparatuses are provided. The D2D resource configuration method includes the following steps. A User Equipment (UE) receives D2D resource configuration information sent by a D2D control node. The UE configures D2D resources according to the D2D resource configuration information. The technical solution implements D2D resource configuration for a D2D UE.