Terminal Load Detection for Collision-Free Direct Link Resource Allocation
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Solution Overview
Problem
In direct link communication systems, the overlap of distributed and centralized scheduling transmission resource pools leads to resource collisions, causing interference and poor communication quality due to terminal devices using different transmission modes occupying the same resources.
Innovation Solution
A method where terminal devices detect load levels in shared transmission resource sets and report idle or available resource units to the network device, allowing for allocation of non-colliding resources, thereby preventing collisions and improving communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If distributed and centralized scheduling transmission resource pools are allowed to overlap to improve resource utilization, then resource utilization is improved, but transmission collisions occur between terminal devices using different transmission modes
Solution Approach 1:
Terminal devices using distributed transmission mode detect the occupancy status of transmission resources and feed back this information to the network device. The network device uses this feedback to make informed scheduling decisions, avoiding allocation of resources that are already occupied by distributed mode terminals, thereby preventing collisions while maintaining resource pool overlap
Solution Approach 2:
Before allocating transmission resources to centralized scheduling mode terminal devices, the network device performs preliminary detection through distributed mode terminals to identify which resources are currently occupied. This preliminary action ensures that subsequent resource allocation does not cause collisions
2Productivity
If terminal devices independently select transmission resources in distributed mode to improve transmission efficiency, then transmission efficiency is improved, but resource collisions occur with centralized scheduling mode devices
Solution Approach 1:
The network device acts as an intermediary between distributed mode and centralized scheduling mode terminal devices. Distributed mode terminals provide resource occupancy information to the network device, which then uses this information to mediate resource allocation for centralized mode terminals, preventing harmful interference while maintaining the efficiency benefits of both modes
Data Source
AI summary
This application provides a direct link data transmission method, a terminal device, and a network device. The method includes: receiving, by a first terminal device, first configuration information sent by a network device, where the first configuration information includes information about a transmission resource set, and the transmission resource set is a transmission resource set shared between a second terminal device that uses a centralized scheduling transmission mode and a third terminal device that uses a distributed transmission mode; detecting, by the first terminal device, a load level of a resource unit in the transmission resource set based on the information about the transmission resource set; and sending, by the first terminal device, report information to the network device based on the load level, where the report information includes information about an occupied resource unit and/or information about an available resource unit in the transmission resource set. A transmission resource allocated to the first terminal device can be prevented from colliding with a transmission resource of another terminal device, so that communication quality of a terminal device and user experience is improved.