D2D Multi-Carrier Aggregation Carrier Set Selection
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Solution Overview
Problem
Existing device-to-device (D2D) communication mechanisms, such as those defined in 3GPP Rel-13 and Rel-14, do not specifically address the carrier set selection requirements for D2D communication in multi-carrier scenarios, particularly in carrier aggregation mode, leading to suboptimal communication quality.
Innovation Solution
A method for selecting a carrier set for D2D multi-carrier aggregation, where a base station receives reporting information from a terminal, determines the resource status of multiple carriers, and selects a suitable carrier set for D2D communication, considering factors like geographic location and pairing information, to improve communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If D2D communication is performed based on one carrier in existing mechanisms, then device complexity is reduced and ease of operation is improved, but communication quality and resource utilization in multi-carrier scenarios deteriorate
Solution Approach 1:
The base station acts as an intermediary that receives measurement reports from the terminal, determines the carrier set based on resource status and pairing information, and configures the terminal with the selected carrier set. This mediator approach resolves the contradiction by centralizing the complex carrier selection logic in the base station, thereby improving communication quality without increasing terminal device complexity
Solution Approach 2:
The terminal performs preliminary measurements on multiple carriers and reports them to the base station before actual D2D communication begins. The base station then determines the optimal carrier set in advance based on resource status. This preliminary action allows the system to prepare the optimal carrier configuration before communication starts, improving reliability without adding operational complexity during actual communication
2Productivity
If D2D communication is performed based on one carrier, then ease of operation is improved, but productivity and resource utilization in multi-carrier scenarios deteriorate
Solution Approach 1:
The terminal autonomously measures multiple carriers and identifies which ones meet reporting conditions, then reports these measurements to the base station. The base station uses this information along with pairing information to determine the optimal carrier set. This self-service approach enables efficient resource utilization through multi-carrier operation while keeping the terminal's operational complexity manageable through automated measurement and reporting
Data Source
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AI summary
A device-to-device (D2D) multi-carrier aggregation-based carrier set selection method and a related device are provided by the implementations of the present disclosure. A base station receives reporting information from a terminal, the reporting information comprising multiple carriers measured as meeting a reporting condition by the terminal; the base station selects, according to resource status of the multiple carriers, a carrier set for CA used for D2D communication of the terminal. The implementations of the disclosure also disclose a related device. With the implementations of the present disclosure, the problem of selecting a carrier set when D2D communication is performed on multiple carriers in a CA mode can be solved, and communication quality can be improved.