Sidelink Multi-Bearer Communication for Reliable UAS Links
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Solution Overview
Problem
Existing wireless communication systems face challenges in stably providing ultra-reliable and low-latency communication services, particularly in high-speed aerial situations such as uncrewed aerial systems (UAS), due to potential link disconnections and channel conditions.
Innovation Solution
Configuring two or more bearers on a sidelink for a communication service flow and implementing efficient resource allocation methods, including RRC messages and sidelink control information, to ensure stable communication between user equipments (UEs) in UAS scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple bearers are configured on sidelink for one service flow, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The patent divides a single communication service flow into multiple bearers (first bearer and second bearer), where each bearer handles specific data transmissions independently. This segmentation allows the system to achieve diversity gain and reliability improvement through multiple transmission paths while managing complexity by clearly defining the function and configuration of each bearer separately.
Solution Approach 2:
The patent changes the parameter of bearer configuration from single to multiple, and introduces different configuration parameters for each bearer (first bearer configuration information and second bearer configuration information). This parameter change enables flexible control over transmission reliability while allowing the system to adapt complexity levels based on service requirements.
2Adaptability or versatility
If adaptive resource allocation is implemented, then communication flexibility is improved, but control signaling overhead increases
Solution Approach 1:
The patent implements dynamic resource allocation where the network can adaptively adjust bearer configurations and resource allocations based on channel conditions and service requirements. The system transitions from static to dynamic configuration, allowing flexible adaptation to changing environments while the network optimizes signaling overhead through intelligent resource management.
Solution Approach 2:
The terminal device performs autonomous selection and configuration of bearers based on received configuration information and current channel conditions. This self-service mechanism reduces the need for continuous network control signaling, as the terminal can independently adapt its transmission strategy while still achieving flexible resource allocation.
Data Source
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AI summary
The present document relates to a sidelink communication method for a critical communication service, and a device therefor. To this end, a method performed by first user equipment (UE) comprises: receiving, from a network, a first radio resource control (RRC) message containing configuration information for supporting one communication service flow through two or more bearers on a sidelink; and transmitting data to second user equipment through the two or more bearers on the sidelink on the basis of the configuration information.