D2D Relay QoS Allocation for End-to-End Link Guarantees
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current communication solutions for device-to-device (D2D) relay scenarios do not adequately consider quality of service (QoS) management, particularly when a relay terminal is involved, leading to suboptimal end-to-end QoS guarantees.
Innovation Solution
A method for determining and allocating QoS parameters across multiple links in a D2D relay scenario, including the allocation of QoS parameters by a first terminal to a relay terminal, and subsequent distribution of these parameters among multiple relay terminals to ensure end-to-end QoS requirements are met.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If relay terminal is introduced to enable D2D communication over large distance, then communication range is extended, but QoS management becomes complex and end-to-end QoS guarantee becomes difficult to achieve
Solution Approach 1:
The patent segments the end-to-end QoS requirement into per-link QoS parameters for each hop in the relay path. The first terminal determines QoS parameters for the first link (between first terminal and first relay terminal) and second link (between first relay terminal and second terminal) separately, making QoS management tractable in relay scenarios.
Solution Approach 2:
The relay terminal acts as an intermediary that receives QoS parameters from the first terminal and determines appropriate QoS parameters for each segment of the transmission path. This intermediary approach allows the complex end-to-end QoS guarantee to be decomposed into manageable per-link QoS management.
2Reliability
If QoS parameters are allocated to each link in relay scenario, then end-to-end QoS guarantee is achieved, but signaling overhead increases
Solution Approach 1:
The patent applies partial action by allocating QoS parameters only to necessary links in the relay path rather than all possible links. The first terminal determines QoS parameters for the first link and second link based on the actual relay communication scenario, avoiding unnecessary signaling overhead while ensuring end-to-end QoS guarantee for the active communication path.
Data Source
AI summary
This application provides a communication method and apparatus. In one example, a communication system includes a first communication apparatus, and a first relay communication apparatus; where the first communication apparatus is configured to: send a first quality of service (QoS) parameter to the first relay communication apparatus, wherein the first QoS parameter indicates a QoS requirement for sending a first service from the first communication apparatus to a second communication apparatus, and the first relay communication apparatus is a relay communication apparatus between the first communication apparatus and the second communication apparatus; the first relay communication apparatus is configured to: receive the first QoS parameter, determine a second QoS parameter based on the first QoS parameter, and the first communication apparatus is further configured to: receive the second QoS parameter.