TDM-Based URLLC M-TRP Resource Allocation
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Solution Overview
Problem
Current wireless communication systems face challenges in supporting explosive data traffic, high per-user data rates, a large number of connected devices, very low end-to-end latency, and high-energy efficiency, particularly in configuring schemes for multiple transmission reception points (TRPs) and resource allocation in time division multiplexing (TDM) based URLLC M-TRP operations.
Innovation Solution
A method for configuring a scheme where multiple TRPs perform cooperative transmission, specifically configuring the number of repetition times and resource allocation for transmission occasions corresponding to the same transport block using TDM based URLLC M-TRP operations, and modifying the downlink control information (DCI) to include a time domain resource assignment field, allowing for efficient resource management and transmission in wireless communication systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple TRPs perform cooperative transmission with repeated transmissions, then data transmission reliability is improved, but device complexity and resource management difficulty increase
Solution Approach 1:
The patent segments the cooperative transmission process into distinct transmission occasions with specific repetition schemes. Each transmission occasion is independently configured with TDM-based resource allocation, allowing the system to manage complexity by dividing the overall transmission into manageable units while maintaining reliability through repeated transmissions across multiple TRPs.
Solution Approach 2:
The patent introduces dynamic configuration of transmission parameters including variable repetition schemes and adaptive TDM resource allocation. The system can dynamically adjust the number of repetitions and resource assignment based on channel conditions and traffic requirements, enabling flexible control over the trade-off between reliability and complexity.
2Productivity
If TDM based resource allocation is used for multiple transmission occasions, then resource management efficiency is improved, but time domain resource assignment complexity increases
Solution Approach 1:
The patent employs periodic transmission occasions with structured TDM resource allocation patterns. By establishing regular intervals and repeating transmission schemes, the system simplifies resource management through predictable periodic behavior while efficiently utilizing time domain resources across multiple TRPs.
Solution Approach 2:
The patent performs preliminary configuration of TDM resource allocation parameters before actual data transmission. The system pre-assigns time domain resources and repetition schemes through RRC signaling, allowing the transmission process to proceed with predetermined resource assignments rather than requiring complex real-time decisions during transmission.
3Adaptability or versatility
If DCI is modified to include time domain resource assignment field, then transmission control flexibility is improved, but control signal complexity increases
Solution Approach 1:
The patent uses RRC signaling to pre-configure time domain resource assignment parameters before DCI transmission. This preliminary configuration allows the DCI to reference pre-defined resource patterns rather than carrying complete resource assignment information, reducing DCI complexity while maintaining flexibility through higher-layer configuration.
Solution Approach 2:
The patent introduces RRC signaling as an intermediary layer between higher-layer configuration and physical layer DCI transmission. The RRC layer handles complex time domain resource assignment configuration, while the DCI layer uses simplified references to these configurations, effectively mediating between flexibility requirements and control signal complexity constraints.
Data Source
AI summary
A method for transmitting and receiving downlink data in a wireless communication system includes the steps of: transmitting a preamble for random access; receiving a response message for the random access corresponding to the preamble, a radio remote control (RRC) connection being established based on the preamble and the response message; receiving configuration information, a repetition scheme based on time division multiplexing being set based on the configuration information; receiving downlink control information (DCI); and receiving a plurality of transmission occasions based on the DCI, wherein a resource allocation in the time domain for the first transmission occasion may be determined based on the time domain resource assignment field of the DCI, and resource allocation in the time domain for the second transmission occasion may be determined based on the resource allocation in the time domain for the first transmission occasion.