Relay Bearer Configuration Using Shared QoS in Sidelink Forwarding
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Solution Overview
Problem
In wireless communication systems, a first terminal acting as a relay cannot obtain necessary Quality of Service (QoS) information when forwarding data to a third terminal, as the data is not generated by its upper layer, leading to uncertainties in ensuring QoS during direct terminal communication.
Innovation Solution
The first terminal receives QoS information from a second terminal or a network device to determine a bearer configuration, allowing it to forward data to the third terminal based on this information, thereby ensuring appropriate QoS.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the first terminal forwards data from the second terminal to the third terminal using direct terminal communication, then communication delay is reduced, but the first terminal cannot obtain QoS information because the data is not generated by its upper layer
Solution Approach 1:
The patent introduces the second terminal as an intermediary that provides QoS information to the first terminal. The second terminal, which has access to the original QoS information from the data source, acts as a mediator to transfer this information to the relay terminal (first terminal), enabling it to properly configure bearer parameters without generating the data itself
Solution Approach 2:
The patent applies preliminary action by having the second terminal provide QoS information to the first terminal before the first terminal forwards the data. This advance provision of QoS information allows the first terminal to pre-configure the appropriate bearer parameters and resources needed for reliable data transmission
2Device complexity
If the first terminal acts as a relay without obtaining QoS information, then device complexity is reduced, but reliability of QoS assurance deteriorates
Solution Approach 1:
The patent extracts the QoS information provision function from the first terminal and assigns it to the second terminal. The first terminal only needs to receive and apply the provided QoS information, while the second terminal extracts and provides the necessary QoS parameters, separating the information source from the relay function
Solution Approach 2:
The patent implements a feedback mechanism where the second terminal provides QoS information back to the first terminal based on the data transmission requirements. This feedback loop ensures that the relay terminal has the necessary information to maintain QoS assurance without requiring complex QoS management capabilities
Data Source
AI summary
A communication method and an apparatus. The method includes: receiving at least one piece of quality of service QoS information from a second terminal; determining first QoS information based on the at least one piece of QoS information; and determining a first bearer configuration based on the first QoS information, and forwarding data from the second terminal to a third terminal based on the first bearer configuration; or sending the first QoS information to a network device, receiving a first bearer configuration of the network device, and forwarding data from the second terminal to a third terminal based on the first bearer configuration.