Multi-RAT Resource Reconfiguration for URLLC Latency
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Solution Overview
Problem
Current wireless communication systems face challenges in improving latency and reliability, particularly for URLLC applications, as they require efficient spectrum utilization and dynamic adaptation across different radio access technologies (RATs) to meet stringent performance requirements.
Innovation Solution
A base station (BS) dynamically converts and reconfigures resources in a frequency band allocated to one RAT to match the format of another RAT, allowing for multi-RAT transmission diversity, enabling communication with user equipment (UE) using the reconfigured resources based on latency and retransmission metrics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a base station uses a single RAT frequency band for communication, then the device complexity for the UE is reduced, but the reliability and latency performance for URLLC applications deteriorates
Solution Approach 1:
The base station implements multi-functionality by enabling a single RAT frequency band to operate with configurations of multiple different RATs. The BS can dynamically reconfigure the frequency band between first RAT and second RAT configurations based on communication needs, allowing it to serve both first RAT UEs and second RAT UEs using the same frequency band, thereby improving reliability through diverse transmission options without requiring UEs to support multiple RATs
Solution Approach 2:
The base station employs dynamic reconfiguration of the frequency band between different RAT configurations. The BS can switch the frequency band from a first RAT configuration to a second RAT configuration and vice versa based on real-time communication requirements, enabling adaptive resource allocation that improves URLLC performance while maintaining simple UE designs
2Adaptability or versatility
If a base station dynamically reconfigures frequency bands between different RATs, then the adaptability and transmission diversity are improved, but the device complexity and reconfiguration overhead increases
Solution Approach 1:
The base station is designed with universal capability to support multiple RAT configurations within a single frequency band. By implementing a unified resource management framework that handles both first RAT and second RAT configurations, the BS achieves high adaptability without proportionally increasing complexity, as the same hardware infrastructure serves multiple RAT functions
Solution Approach 2:
The base station implements dynamic reconfiguration mechanisms that allow the frequency band to adapt between different RAT configurations based on traffic demands and service requirements. This dynamic approach enables the system to optimize performance for different service types (e.g., eMBB, URLLC) while maintaining a manageable level of complexity through automated reconfiguration procedures
3Productivity
If a base station uses frequency bands allocated to a second RAT for communicating with a first RAT, then the productivity and spectrum utilization are improved, but the loss of information and interference with the second RAT increases
Solution Approach 1:
The base station dynamically times the reconfiguration of frequency bands between different RATs to minimize interference. By coordinating the switching between first RAT and second RAT configurations with traffic patterns and service requirements, the BS achieves high spectrum utilization while preventing data loss or interference, as the reconfiguration occurs during appropriate time windows when neither RAT is actively transmitting critical data
Data Source
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AI summary
Wireless communications systems and methods related to serving wireless communication devices using multi-radio access technology (multi-RAT) transmission diversity are provided. A first wireless communication device communicates, with a second wireless communication device in a first frequency band allocated to a first radio access technology (RAT), first data using the first RAT. The first wireless communication device reconfigures a first resource in a second frequency band allocated to a second RAT different from the first RAT from implementing a configuration of the second RAT to implementing a configuration of the first RAT. The first wireless communication device communicates, with the second wireless communication device in the second frequency band, second data using the first resource implementing the configuration of the first RAT.