Uplink Interruption Signaling for URLLC Resource Allocation
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Solution Overview
Problem
Ultra-reliable low-latency communication (URLLC) services experience reduced communication accuracy and reliability due to interference with victim services when sharing the same time-frequency resources, leading to suboptimal transmission latency requirements.
Innovation Solution
A communication method where a terminal device receives scheduling information to interrupt uplink transmissions on overlapping time-frequency resources, allowing the gNB to allocate specific resources for URLLC services, thereby minimizing interference and enhancing communication reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the same time-frequency resource is used for URLLC service and victim service transmission, then resource utilization is improved, but communication accuracy and reliability deteriorate due to interference
Solution Approach 1:
The patent segments time-frequency resources by introducing interruption indication information that divides resource usage into interrupted and non-interrupted portions. When URLLC traffic arrives, the gNB sends interruption indication to the terminal device to interrupt ongoing victim service transmission on overlapping resources, thereby segmenting the resource allocation between eMBB and URLLC services to prioritize URLLC reliability
Solution Approach 2:
The patent implements dynamic resource allocation where the interruption indication information dynamically adjusts resource usage based on URLLC traffic conditions. The terminal device dynamically interrupts victim service transmission when receiving interruption indication, allowing the system to adapt resource allocation in real-time according to URLLC service requirements while maintaining eMBB service on non-interrupted resources
2Reliability
If interruption indication information is introduced to prioritize URLLC transmission, then communication reliability is improved, but device complexity increases due to additional signaling and processing
Solution Approach 1:
The patent extracts the interruption control function from complex resource scheduling by using dedicated interruption indication information in downlink control channels. This separate extraction of interruption signaling simplifies the overall system architecture by isolating the URLLC prioritization mechanism from general scheduling operations, reducing processing complexity while maintaining reliability
Solution Approach 2:
The patent applies preliminary action by pre-configuring interruption indication information in downlink control channels before URLLC transmission conflicts occur. The gNB proactively sends interruption indications to terminal devices based on predicted or detected URLLC traffic, allowing terminal devices to pre-interrupt victim service transmission and avoid interference before it occurs, thereby simplifying real-time processing
Data Source
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AI summary
This application provides a communication method and a communications apparatus, where the communication method includes: receiving, by a terminal device, first scheduling information for scheduling first uplink transmission, where the first scheduling information includes interruption indication information, and the interruption indication information is used to indicate the terminal device to interrupt second uplink transmission; and interrupting, by the terminal device, the second uplink transmission based on the interruption indication information. Therefore, communication accuracy and reliability can be improved.