D2D Resource Allocation via Pre-acquired Time-Frequency Sharing
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Solution Overview
Problem
Current D2D communication technologies face limitations in flexibility and reliability due to the need for time-frequency resource acquisition through base station scheduling or contention, which cannot meet the low-delay requirements of high-priority or urgent services.
Innovation Solution
A method where a terminal device acquires a time-frequency resource for a first service and uses it to transmit data for a second service, determining priorities, urgency, or service types to prioritize transmissions, and adjusting resource sizes or durations based on preset thresholds, allowing for flexible and efficient data transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a time-frequency resource is acquired through base station scheduling or contention, then resource allocation is managed, but transmission delay increases and flexibility is reduced
Solution Approach 1:
The terminal device pre-acquires a time-frequency resource for a first service before the second service emerges. When the second service needs transmission, the device can directly use the pre-acquired resource without going through scheduling or contention procedures, thereby reducing transmission delay while maintaining resource management through the preliminary acquisition phase
Solution Approach 2:
The patent enables dynamic resource sharing where a pre-acquired time-frequency resource can be flexibly allocated between different services based on emerging needs. The device determines service priorities and dynamically decides whether to use the pre-acquired resource for the second service or acquire a new resource, providing adaptability between resource management stability and transmission flexibility
2Reliability
If a dedicated time-frequency resource is acquired for each service, then service quality is ensured, but resource utilization efficiency decreases
Solution Approach 1:
The patent makes a single time-frequency resource serve multiple services through priority-based allocation. The pre-acquired resource can be used for the first service or reassigned to the second service based on service emergence and priority determination, allowing one resource to fulfill multiple functions and improving overall utilization efficiency while maintaining service quality through proper resource assignment
3Reliability
If base station scheduling is used for resource allocation, then centralized control is achieved, but system flexibility and response speed are reduced
Solution Approach 1:
The terminal device autonomously determines service priorities and makes independent decisions about resource allocation between services. The device evaluates whether to use the pre-acquired time-frequency resource for the second service or acquire a new resource based on service characteristics, eliminating the need for real-time base station scheduling decisions and thereby increasing system flexibility and response speed while maintaining centralized control for resource acquisition
Data Source
AI summary
Provided are an inter-device communication method and apparatus, the method including: a first terminal device obtains a first time frequency resource, the first time frequency resource being a time frequency resource used for transmitting data of a first service, the first service being an inter-device communication service; the first terminal device sends data of a second service according to the first time frequency resource, the second service being an inter-device communication service. The present invention is capable of increasing the flexibility and reliability of inter-device communication.