Relay Node Resource Allocation for D2D Communications
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Solution Overview
Problem
Current mobile telecommunications systems face limitations in network capacity and geographical coverage, particularly in device-to-device (D2D) communications, where there is a lack of effective relaying solutions due to the complexity of D2D arrangements and the absence of centralized control points like base stations.
Innovation Solution
A method and system for allocating resources in a mobile telecommunications system to enable a relay node to operate as a terminal-to-terminal relay for D2D communications, where resources are allocated and managed to facilitate direct communication between terminals, either under network control, hybrid control, or autonomously, using a pre-configured resource pool.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If device-to-device communications are implemented without centralized base station control, then communication efficiency and speed are improved, but system reliability and resource management deteriorate
Solution Approach 1:
The patent introduces a relay node as an intermediary between terminals and the network. The relay node provides localized resource allocation and control functions, enabling efficient D2D communication while maintaining system reliability through distributed intelligence rather than complete decentralization.
Solution Approach 2:
The patent segments the centralized base station functions into distributed relay nodes that operate autonomously within their local areas. Each relay node manages resources for nearby terminals independently, achieving local optimization while contributing to overall system reliability through redundancy and distribution.
2Reliability
If relay nodes are introduced for D2D communications, then communication coverage and reliability are improved, but system complexity increases
Solution Approach 1:
The relay node is designed to perform multiple functions including resource allocation, signal relaying, and local network management. This multi-functionality reduces the need for separate specialized components, thereby managing complexity while achieving improved reliability and coverage.
Solution Approach 2:
The patent combines the functions of base station control and terminal communication into the relay node. By merging resource allocation, signal processing, and network management functions into a single entity, the system achieves improved reliability without proportionally increasing overall system complexity.
3Reliability
If resources are allocated for terminal-to-terminal relaying, then D2D communication quality is improved, but network resource consumption increases
Solution Approach 1:
The relay node allocates resources locally to specific D2D communication pairs based on their immediate needs and channel conditions. This localized resource allocation improves communication quality for targeted terminals while minimizing unnecessary resource consumption across the entire network.
Solution Approach 2:
The patent implements resource allocation on a partial basis, providing enhanced resources only when and where D2D communication quality requires it, rather than allocating resources universally. This selective approach improves communication quality for specific pairs while controlling overall network resource consumption.
Data Source
AI summary
A method of allocating resources in a mobile telecommunications system, the resources being for a relay node to operate as a terminal-to-terminal relay for a device-to-device communication between a first terminal and a second terminal. The method includes: allocating first resources for the first terminal to communicate via the relay node for the device-to-device communication; allocating second resources for the second terminal to communicate via the relay node for the device-to-device communication; notifying the first terminal of the allocated first resources; notifying the second terminal of the allocated second resources; and the first and second terminals exchanging messages for the device-to-device communication via the relay node and using the first and second resources, respectively.