Sidelink QoS Feedback and Resource Selection for Bidirectional Delay Control
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Solution Overview
Problem
Existing communication systems struggle to support bi-directional quality of service (QoS) requirements in sidelink communication, particularly in scenarios requiring higher throughput, lower latency, and more flexible resource allocation.
Innovation Solution
A wireless communication method and device that enable a receiving end and a transmitting end to perform operations based on bi-directional QoS requirements, including determining and adjusting packet delay budgets, selecting transmission resources, and recommending resource sets to ensure optimal communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional unidirectional QoS mechanisms are used in sidelink communication, then the implementation complexity is low, but the bi-directional QoS requirement cannot be met
Solution Approach 1:
The patent implements feedback mechanisms where the receiving end sends back received quality information (RQI) and resource recommendation information to the transmitting end. This feedback loop enables the transmitting end to adjust its transmission parameters and resource selection to meet bi-directional QoS requirements, resolving the contradiction between reliability and complexity through structured information exchange.
Solution Approach 2:
The patent introduces dynamic QoS parameter adjustment where both packet delay budget (PDB) and packet delay variation budget (PDVB) can be modified based on real-time channel conditions and QoS requirements. The system dynamically selects transmission resources and adjusts transmission parameters to satisfy bi-directional QoS constraints, transforming static QoS mechanisms into adaptive ones.
2Reliability
If packet delay budget and resource selection operations are performed to meet bi-directional QoS requirements, then communication quality improves, but processing time and computational complexity increase
Solution Approach 1:
The patent performs preliminary resource selection and QoS parameter determination before actual data transmission. The transmitting end pre-calculates candidate resource sets and pre-determines initial PDB and PDVB values based on predicted channel conditions and QoS requirements, reducing real-time processing time while maintaining communication quality.
Solution Approach 2:
The patent employs partial resource selection by evaluating only the most promising candidate resources rather than exhaustively analyzing all possible transmission opportunities. The system uses QoS constraints to filter and select only the necessary subset of resources that satisfy bi-directional requirements, reducing computational overhead while ensuring quality.
3Adaptability or versatility
If resource allocation is made more flexible to meet varying QoS requirements, then adaptability improves, but resource management complexity increases
Solution Approach 1:
The patent segments the resource allocation process into distinct phases: resource selection, resource recommendation, and resource confirmation. It divides QoS parameters into separate components (PDB for delay, PDVB for delay variation) and handles each independently. This segmentation enables flexible resource allocation while managing complexity through structured processing stages.
Solution Approach 2:
The patent utilizes parameter changes by adjusting QoS parameters (PDB, PDVB, priority levels) to adapt resource allocation to different communication scenarios. The system modifies these parameters dynamically based on channel conditions and QoS requirements, enabling flexible resource management through parameter optimization rather than complex structural changes.
Data Source
AI summary
A wireless communication method includes: performing, by a receiving end, a first operation according to bi-directional QoS requirement information on a sidelink, where the first operation includes at least one of: determining a PDB of a reverse link, adjusting the PDB of the reverse link, determining a PSDB of the reverse link, adjusting the PSDB of the reverse link, determining a remaining delay, determining a remaining delay of the reverse link, deleting packets, recommending a PSDB of a forward link, recommending a PDB of the forward link, adjusting a selected resource, adjusting a selected resource set, selecting a transmission resource, selecting a transmission resource set, recommending an optional resource for a transmitting end, recommending an optional resource set for the transmitting end, triggering feedback, performing feedback, obtaining or determining time information, obtaining or determining delay information, or obtaining or determining auxiliary information.