D2D Terminal Resource Selection for Unreliable Coverage
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Solution Overview
Problem
Current device-to-device (D2D) communication technologies in wireless communication systems face challenges in resource allocation, leading to unreliable and inefficient operations, particularly in public safety networks that require high reliability and security, especially when cellular coverage is unavailable.
Innovation Solution
A method and terminal configuration that allow for the acquisition and selection of multiple types of resources for D2D operations, enabling the use of one suitable resource type for reliable and efficient communication, even when connectivity with the network is compromised.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single type of resource is allocated for D2D operation, then the resource allocation scheme is simple, but the reliability and efficiency of D2D operation deteriorates
Solution Approach 1:
The resource pool is segmented into multiple resource types (first type resource and second type resource) with different characteristics. The terminal can select appropriate resource types based on channel conditions and service requirements, thereby improving D2D operation reliability without significantly increasing overall system complexity
Solution Approach 2:
The terminal dynamically selects between different resource types based on real-time channel conditions and operational requirements. This dynamic adaptation allows the system to maintain high reliability by choosing the most suitable resource type while keeping the allocation scheme flexible rather than statically complex
2Reliability
If multiple types of resources are allocated for D2D operation, then the reliability and efficiency of D2D operation improves, but the resource allocation scheme complexity increases
Solution Approach 1:
The resource pool is divided into distinct resource types with different characteristics suitable for different scenarios. This segmentation allows the terminal to select appropriate resources based on conditions, improving reliability while maintaining manageable complexity through clear resource categorization
Solution Approach 2:
The terminal autonomously selects the appropriate resource type based on its own assessment of channel conditions and service requirements, without requiring complex network control. This self-service approach improves reliability through adaptive selection while minimizing the complexity of the overall allocation scheme
3Productivity
If D2D operation uses traditional cellular communication resources, then the network resource utilization is efficient, but the communication reliability deteriorates when cellular coverage is unavailable
Solution Approach 1:
The D2D resource pool is designed to function both as dedicated D2D resources and as alternative resources when cellular coverage is unavailable. This multi-functionality ensures that the resources can serve dual purposes: efficient network resource utilization under normal conditions and reliable standalone D2D operation when cellular coverage is lost
Data Source
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AI summary
Provided is a device-to-device (D2D) operation method performed by a terminal in a wireless communication system. The method comprises: acquiring configuration information indicating a first type resource and a second type resource that can be used in the D2D operation; selecting one type of resource among the first type resource and the second type resource; and performing the D2D operation using the selected type of resource.