User Equipment Sidelink RAT Selection for V2X Interference
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently coexisting and managing different radio access technologies (RATs) for vehicle-to-everything (V2X) communication services, particularly in selecting the appropriate RAT and configuring communication parameters to ensure quality of service (QoS) across various standards like LTE and 5G NR, while avoiding mutual interference.
Innovation Solution
The system employs processing circuitry in user equipment (UE) to determine whether to transmit service data through a primary link or sidelink, selecting a suitable RAT from a set of available RATs based on configuration parameters that include geographical location, user subscription, and service agreements, and maps non-RAT-specific QoS parameters to communication parameters, enabling seamless data transmission across different RATs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple RATs coexist in a common spectrum band, then spectrum utilization is improved, but mutual interference between RATs increases
Solution Approach 1:
The patent segments the spectrum band into different frequency ranges and assigns specific RATs to specific segments. For example, LTE operates in certain frequency ranges while 5G NR operates in other ranges within the same overall spectrum band. This segmentation allows multiple RATs to coexist without mutual interference by physically separating their operational frequencies.
Solution Approach 2:
The patent applies different quality characteristics to different parts of the spectrum. Each RAT is assigned specific quality parameters such as priority levels, bandwidth allocations, and interference protection margins that are tailored to their specific operational characteristics. This allows the system to optimize performance for each RAT while maintaining overall spectrum efficiency.
2Reliability
If RAT selection is based on multiple configuration parameters, then QoS is improved, but selection complexity increases
Solution Approach 1:
The patent performs preliminary actions by pre-configuring multiple RATs with their respective parameters and capabilities before actual data transmission occurs. The system pre-establishes a ranking of available RATs based on configuration parameters such as signal strength, network load, and service requirements. When data needs to be transmitted, the system simply selects from the pre-ranked list rather than performing complex real-time analysis.
Solution Approach 2:
The patent implements feedback mechanisms where the system continuously monitors the performance of active RATs and adjusts the selection criteria accordingly. Configuration parameters such as signal quality, data throughput, and error rates are fed back to the selection algorithm, allowing it to dynamically adjust RAT selection to optimize QoS while reducing complexity through learned patterns.
3Reliability
If QoS parameters are mapped to RAT-specific communication parameters, then service requirement fulfillment is improved, but parameter mapping complexity increases
Solution Approach 1:
The patent creates a universal parameter mapping framework that can translate generic QoS requirements into specific RAT communication parameters regardless of which RAT is selected. The system maintains a standardized set of QoS parameters (such as latency, throughput, reliability) and maps them to RAT-specific parameters through a universal translation layer. This approach allows the same QoS mapping logic to work across multiple RATs without requiring separate complex mapping mechanisms for each technology.
Data Source
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AI summary
An aspect of the disclosure provides a user equipment (UE) that includes processing circuitry. The processing circuitry of the UE determines whether to transmit service data associated with a service to a receiving device through a primary link or a sidelink. When the service data is determined to be transmitted through the sidelink, the processing circuitry selects a radio access technology (RAT) for implementing the sidelink from a plurality of available RATs according to a set of configuration parameters received from a network, determines communication parameters for the selected RAT based on quality of service (QoS) or service requirement related parameters included in the set of configuration parameters, and transmits the service data through the sidelink implemented by the selected RAT according to the communication parameters. When the service data is determined to be transmitted through the primary link, the processing circuitry transmits the service data through the primary link.