Resource Transmission Cancellation Indication for URLLC Interference
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Solution Overview
Problem
In the New Radio (NR) system, Ultra-Reliable Low Latency Communication (URLLC) and Enhanced Mobile Broadband (eMBB) services interfere with each other during coexistence, leading to demodulation performance issues, and existing solutions like stopping eMBB transmission to reduce interference prolong transmission latency.
Innovation Solution
Configuring transmission resource cancelation indication information, including a reference time region, reference frequency region, transmission resource cancelation indication bit number, time indication granularity, or starting point offset, to simplify signal interruption processing and improve system efficiency under multi-carrier conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If eMBB transmission is stopped to reduce interference to URLLC, then URLLC demodulation performance is improved, but transmission latency increases due to retransmission
Solution Approach 1:
The network device sends transmission resource cancellation indication information to the terminal device in advance, notifying it of upcoming URLLC transmissions before they occur. This allows the terminal to pre-adjust its reception strategy, canceling eMBB transmissions proactively rather than reactively, thereby maintaining URLLC reliability while minimizing latency penalties through timely resource allocation adjustments
2Reliability
If transmission resource cancelation indication information is configured for each carrier separately, then interference cancellation accuracy is improved, but device complexity and signaling overhead increase
Solution Approach 1:
The patent combines configuration parameters across multiple carriers by establishing reference relationships between them. A reference carrier is selected, and its configuration parameters (such as time region, frequency region, bit number, granularity, and offset) serve as baseline values. Other carriers inherit or adjust these reference values, reducing the need for independent configuration of each carrier while maintaining accurate interference cancellation specific to each carrier's characteristics
Data Source
AI summary
A method for configuring resource transmission cancellation indication information, a terminal device, and a network device are provided. The method comprises: receiving configuration information from a network device, the configuration information being used to configure resource transmission cancellation indication information, and the configuration information comprising at least one of the following types of information: a first reference time domain range; a reference frequency domain range; a resource transmission cancellation indication bit count; a first time domain indication granularity; and information used for determining the origin offset of resource transmission cancellation indication information.