D2D Communication Service Cycle Indication for Resource Utilization
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Solution Overview
Problem
In the Internet of Vehicles, D2D communication systems face inefficiencies due to transmission resource waste when the service cycle of data changes, leading to decreased resource utilization as devices occupy resources that are not suited for the new cycle, causing unnecessary resource allocation and waste.
Innovation Solution
The method involves generating and sending service cycle indication information by user equipment to indicate the service cycle of to-be-sent data, allowing other devices to determine idle transmission resources and adjust their communication accordingly, thereby optimizing resource allocation and utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If user equipment occupies a transmission resource applicable to a previous service cycle, then the transmission resource is reserved for future use, but transmission resource waste occurs when the service cycle changes, leading to decreased resource utilization
Solution Approach 1:
The patent makes the transmission resource occupation dynamic by introducing service cycle indication information. Instead of statically occupying resources for a fixed period, user equipment dynamically adjusts resource occupation based on actual service cycle needs. The equipment monitors whether data needs to be sent in subsequent cycles and releases resources when no longer needed, transforming the rigid resource reservation into a flexible, demand-driven approach that prevents resource waste while maintaining reliability.
2Device complexity
If user equipment always occupies a transmission resource for a determined service cycle, then resource allocation is simplified, but transmission resource utilization is greatly decreased when service cycles vary
Solution Approach 1:
The patent enables user equipment to autonomously manage transmission resources through self-service mechanisms. Each piece of equipment monitors its own service cycle status, determines whether to continue occupying resources based on its data transmission needs, and releases resources when no longer required. This self-service approach eliminates the need for complex centralized resource reallocation while maximizing utilization, as each device independently optimizes its resource usage according to actual service requirements.
3Productivity
If semi-static transmission resources are allocated based on initial service cycle information, then resource allocation is efficient for the initial cycle, but resource waste occurs when service cycles change without reallocation
Solution Approach 1:
The patent applies preliminary action by having user equipment proactively indicate its service cycle information and monitor future transmission needs before resource waste occurs. The equipment sends service cycle indication information in advance and continuously monitors whether data needs to be sent in subsequent cycles. This preliminary monitoring and indication mechanism allows for timely resource release or reallocation requests, preventing the time loss associated with reactive resource management and ensuring continuous optimal utilization.
Data Source
Figure 1A~1B
Figure 1C
Figure 2
AI summary
The present invention provides a D2D communication method and a device. Service cycle indication information of UE is sent to a receive end by adding the service cycle indication information to D2D data, so that the receive end can learn of a transmission resource occupation status of the UE through monitoring and the like. The transmission resource occupation status includes a service cycle, a location of an occupied time-frequency resource, and the like. Therefore, an idle transmission resource can be determined, and D2D communication is performed by using the idle transmission resource. In this way, transmission resource waste is avoided, and transmission resource utilization is improved.