D2D Link Discovery Using Multiple-Antenna Technology
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Solution Overview
Problem
Existing D2D link discovery methods suffer from low resource utilization due to the focus on single link discovery, limiting the reuse of wireless resources such as frequency and time resources.
Innovation Solution
A D2D link discovery method that involves user equipment obtaining a neighboring UE list from a server, extracting relevant information to determine multiple neighboring UEs capable of D2D connections using multiple-antenna technology, and performing link mapping to establish connections with these UEs, thereby enhancing resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If D2D link discovery focuses on single link discovery, then the discovery process is simple, but resource utilization is low
Solution Approach 1:
The patent merges multiple single link discovery processes into a unified multiple link discovery framework. By combining discovery procedures for multiple neighboring UEs into a single coordinated process, the system achieves improved resource utilization while maintaining manageable complexity through centralized control and resource coordination.
Solution Approach 2:
The discovery mechanism is designed to serve multiple functions simultaneously - discovering multiple D2D links, allocating resources efficiently, and coordinating multiple UEs. This multi-functional approach allows the same discovery infrastructure to support both simple single-link scenarios and complex multi-link scenarios, improving overall resource utilization.
2Productivity
If multiple D2D links are established using multiple-antenna technology, then resource utilization improves, but device complexity increases
Solution Approach 1:
The patent introduces network-side coordination entities as intermediaries that manage the complexity of multiple-antenna technology. These intermediaries handle beamforming coordination, resource allocation, and link management, offloading the computational and coordination burden from individual UEs while enabling efficient use of multiple antennas for improved resource utilization.
Solution Approach 2:
The system dynamically adjusts parameters such as beamforming vectors, antenna configurations, and resource allocation based on channel conditions and traffic requirements. By changing these parameters adaptively, the system optimizes the use of multiple-antenna technology to improve resource utilization while managing complexity through controlled parameter adjustment rather than fixed complex configurations.
3Quantity of substance
If D2D connections are established with multiple neighboring UEs, then link quantity and capacity increase, but link management complexity increases
Solution Approach 1:
The patent segments the management of multiple D2D links into distinct functional modules - discovery management, resource allocation, beamforming coordination, and link maintenance. Each module handles specific aspects of link management independently, allowing the system to support multiple links while keeping management complexity manageable through functional decomposition and specialized handling of each link aspect.
Data Source
AI summary
A D2D link discovery method, which includes: obtaining, by UE, a neighboring UE list from a server, where the neighboring UE list includes related information of M neighboring UEs, and the related information is information required by the UE to determine whether a D2D connection to corresponding neighboring UE can be established by using a multiple-antenna technology; extracting, by the UE, the related information of the M neighboring UEs from the neighboring UE list, and determining N neighboring UEs from the M neighboring UEs based on the related information of the M neighboring UEs, where the N neighboring UEs are UEs to which D2D connections can be established by the UE by using the multiple-antenna technology; and performing, by the UE based on the multiple-antenna technology, link mapping between the UE and the N neighboring UEs to obtain respective links corresponding to the N neighboring UEs.