D2D Resource Scheduling in Multi-Carrier IoV Networks
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Solution Overview
Problem
Current base stations cannot efficiently schedule user equipment (UE) for direct device-to-device (D2D) communication on multiple carriers, leading to wasted spectrum resources and decreased system capacity in the Internet of Vehicles (IoV) network.
Innovation Solution
A method and apparatus that allow UE to receive scheduling information from a serving cell, enabling cell synchronization and data transmission on available D2D resources in a secondary serving cell, thereby optimizing resource allocation and reducing the load on the primary serving cell.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UE is equipped with multiple radio transceivers to communicate on multiple carriers, then communication capacity is improved, but spectrum resources are wasted and system capacity decreases
Solution Approach 1:
The patent implements dynamic carrier switching where the base station schedules the UE to perform D2D direct communication on different carriers based on real-time spectrum availability and traffic conditions. The UE dynamically transitions between carriers according to scheduling information, optimizing spectrum utilization while maintaining communication capacity.
Solution Approach 2:
The patent changes the operational parameters of the UE by enabling it to switch between different carriers (frequency parameters) and communication modes (scheduling modes) based on network conditions. This allows the system to adapt to varying spectrum availability and optimize overall system capacity.
2Productivity
If base station schedules UE for D2D communication on multiple carriers, then system capacity increases, but current base station capability is insufficient
Solution Approach 1:
The patent segments the carrier aggregation function into separate scheduling decisions. The base station independently determines scheduling information for each carrier and transmits it to the UE, which then executes the D2D communication on the scheduled carrier. This segmentation simplifies the base station's scheduling complexity while enabling multi-carrier operation.
Solution Approach 2:
The patent introduces scheduling information as an intermediary mechanism between the base station and UE. The base station generates scheduling information containing carrier and resource details, transmits it to the UE, and the UE uses this intermediary data to perform D2D communication. This intermediary simplifies the interaction and reduces direct scheduling complexity.
3Ease of manufacture
If UE performs D2D communication on primary serving cell only, then implementation is simple, but spectrum resources are wasted
Solution Approach 1:
The patent adds a new dimension to D2D communication by enabling the UE to operate on multiple carriers simultaneously rather than being limited to a single primary carrier. This dimensional expansion allows the system to utilize additional spectrum resources while maintaining the simplicity of the D2D communication mechanism through standardized scheduling protocols.
Data Source
AI summary
The present invention relates to the field of the Internet of Vehicles and discloses a data sending method and device. In one example, the method includes: receiving scheduling information sent by a first serving cell, where the scheduling information carries at least a second serving cell identifier of a second serving cell and an available device to device D2D transmission resource in the second serving cell; performing cell synchronization with the second serving cell based on the second serving cell identifier; and sending device to device D2D data on the available D2D transmission resource in the second serving cell according to the scheduling information.