User Equipment QoS Parameter Setting for V2X PSSCH
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Solution Overview
Problem
In Vehicle to Everything (V2X) communication, existing technologies face challenges in setting Quality of Service (QoS) parameters for Physical Sidelink Shared Channel (PSSCH) transmissions and determining channel priority when PSSCH conflicts with PUCCH or PUSCH transmissions.
Innovation Solution
A control method for user equipment that generates and sets QoS parameters in sidelink control information (SCI) based on the presence and content of MAC protocol data units (PDU) in PSSCH, including priority, latency, and reliability, and determines channel priority using a priority threshold value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If QoS parameters are set based on MAC PDU content, then transmission reliability is improved, but processing complexity increases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting QoS parameters (priority, latency, reliability) based on the MAC PDU content and transmission conditions. The UE determines appropriate QoS values by evaluating whether MAC SDUs are present and comparing priority thresholds, thereby adapting transmission parameters to current network conditions and data requirements, which resolves the contradiction between reliability and processing complexity.
2Reliability
If channel priority determination is implemented, then channel conflict resolution is improved, but signaling overhead increases
Solution Approach 1:
The patent extracts only the essential QoS parameters (priority, latency, reliability) needed for channel conflict resolution and includes them in the SCI. By selecting and transmitting only the critical information required for priority determination rather than all possible parameters, the solution improves channel conflict resolution while minimizing signaling overhead.
3Adaptability or versatility
If multiple QoS parameter setting rules are implemented, then transmission adaptability is improved, but control complexity increases
Solution Approach 1:
The patent segments the QoS parameter setting process into distinct cases based on MAC PDU content: Case 1 when MAC SDU is present, Case 2 when MAC SDU is not present, and Case 3 for padding bits. Each case has specific determination rules, which organizes the complex adaptability requirements into manageable segments, reducing control complexity while maintaining transmission adaptability.
Data Source
AI summary
Provided in the present invention are a control method for user equipment, and user equipment. The control method for user equipment (UE) comprises: receiving, by the UE, a channel state information (CSI) request transmitted by other UE; generating, by the UE, on the basis of the CSI request, a CSI report transmitted through a PSSCH, and sidelink control information (SCI) for scheduling and indicating the transmission of the PSSCH; and setting, on the basis of whether the PSSCH carries a MAC protocol data unit (MAC PDU), a quality of service (QoS) parameter related to the QoS of the PSSCH transmission included in the SCI.