Dynamic Feedback Mechanism Selection for URLLC Latency
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Solution Overview
Problem
In ultra-reliable low-latency communication (URLLC) services, the need for multiple feedbacks from terminals to access network devices increases latency, as ensuring communication reliability requires frequent feedback receipt.
Innovation Solution
A method where a first device sends indication information to a second device to select a feedback mechanism for data transmission, allowing feedback messages to be sent only once, thereby reducing latency and ensuring reliability by determining the appropriate feedback mechanism based on channel status, latency requirements, and terminal performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the access network device receives feedbacks from the terminal for a plurality of times to ensure communication reliability, then the reliability is improved, but the latency is increased
Solution Approach 1:
The patent applies dynamics by making the feedback mechanism adjustable and flexible. The access network device dynamically selects between first feedback mechanism (multiple feedbacks) and second feedback mechanism (single feedback) based on service requirements. This dynamic adaptation allows the system to optimize between reliability and latency depending on the specific service scenario, resolving the contradiction by making the feedback approach context-dependent rather than fixed.
Solution Approach 2:
The patent changes the parameter of feedback quantity from fixed to variable. By introducing different feedback mechanisms with different feedback counts (one or multiple), the system can adjust this parameter according to service type. For URLLC services requiring low latency, the system selects the mechanism with fewer feedbacks, thus changing the parameter to resolve the contradiction between reliability and latency.
2Reliability
If feedback messages are sent multiple times to ensure reliability, then the reliability is improved, but the complexity of the feedback process is increased
Solution Approach 1:
The patent segments the feedback process into distinct mechanisms: first feedback mechanism for scenarios requiring multiple feedbacks, and second feedback mechanism for scenarios requiring single feedback. This segmentation allows the system to select the appropriate level of complexity based on service requirements, avoiding unnecessary complexity in low-latency scenarios while maintaining reliability where needed.
Solution Approach 2:
The system dynamically selects between different feedback mechanisms based on service requirements. For URLLC services, it selects the simpler second feedback mechanism with single feedback, reducing process complexity. For other services requiring higher reliability, it selects the first feedback mechanism with multiple feedbacks. This dynamic selection resolves the contradiction by adapting complexity to actual needs.
Data Source
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AI summary
Embodiments of the present invention disclose an information processing method and device, applicable to indicate a feedback mechanism for data transmission. The method in the embodiments of the present invention includes: sending, by a first device, first indication information to a second device, where the first indication information is used to indicate a first feedback mechanism of the second device for data transmission, the first feedback mechanism is at least one of a plurality of feedback mechanisms, and types of at least two of the plurality of feedback mechanisms are different; and receiving, by the first device, first feedback information sent by the second device based on first feedback mechanism.