Communication Resource Pairing for URLLC Reliability
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Solution Overview
Problem
Current wireless communication systems face challenges in increasing the reliability of low latency transmissions, particularly for ultra-reliable low latency communications (URLLC), due to strict timing constraints that limit the effectiveness of techniques for enhancing transmission reliability.
Innovation Solution
The described techniques involve transmitting repetitions of control and data messages, where explicit or implicit signaling is used to indicate a correspondence between repeated messages, allowing for improved decoding and error reduction in low latency environments, specifically by monitoring and decoding multiple control and data messages to convey information for a single transport block.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If repetitions of control and data messages are transmitted to increase reliability, then transmission reliability is improved, but transmission latency increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring correspondence relationships between control channel candidates and data resources before actual transmission. This allows the receiving device to prepare decoding resources in advance, enabling rapid processing of repeated messages without adding significant latency. The pre-established mappings enable immediate decoding when repetitions are received, resolving the contradiction between reliability improvement through repetition and latency constraints.
Solution Approach 2:
The patent uses copying by transmitting multiple copies (repetitions) of control and data messages across different channel candidates. The receiving device monitors multiple control channel candidates and decodes corresponding data resources based on pre-configured correspondences. This copying approach enhances reliability through redundancy while the pre-established relationships ensure efficient processing that minimizes latency overhead.
2Reliability
If multiple control channel candidates are monitored to enable message repetition, then decoding reliability is improved, but device complexity increases
Solution Approach 1:
The patent reduces monitoring complexity through preliminary action by pre-configuring and signaling correspondence relationships between control channel candidates and data resources before transmission begins. The receiving device receives indication information that establishes these mappings in advance, allowing it to efficiently monitor multiple control channel candidates without complex real-time decision-making. This pre-preparation significantly reduces the computational burden and complexity of monitoring multiple channels while maintaining high decoding reliability.
3Measurement precision
If explicit signaling is used to indicate correspondence between repeated messages, then decoding accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent applies universality by designing indication information that serves multiple functions simultaneously. The same signaling mechanism not only indicates the correspondence between control channel candidates and data resources but also conveys resource allocation, modulation schemes, and other transmission parameters. This multi-functional approach improves decoding accuracy through explicit correspondence indication while minimizing signaling overhead by consolidating multiple information types into a unified signaling structure.
Data Source
AI summary
Methods, systems, and devices for increasing the reliability of low latency transmissions are described. For example, multiple control messages and/or multiple data messages may be transmitted for a single transport block. Explicit and/or implicit signaling may be used to support the repetition of control and data transmissions in a low latency environment. For example, explicit signaling may be used to indicate a correspondence between repeated control and/or data messages. Additionally or alternatively, particular configurations may be used to implicitly signal a correspondence between repeated control and/or data messages.