Transport Block Mapping Across Spatial Correlation Parameters
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Solution Overview
Problem
In ultra-reliable low-latency communication (URLLC) scenarios, the mapping relationship between spatial correlation parameters and transport blocks is unclear, leading to uncertainty in data transmission reliability when multiple transport blocks are repeatedly sent.
Innovation Solution
A method to determine a mapping relationship between spatial correlation parameters and transport blocks using multiplexing techniques such as space, time, and frequency division multiplexing, ensuring that the network and terminal devices know which transport block is sent or received based on which spatial correlation parameter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple spatial correlation parameters are used to transmit multiple repeated transport blocks, then transmission reliability is improved, but the mapping relationship between parameters and blocks becomes unclear
Solution Approach 1:
The patent segments the transmission process by associating each spatial correlation parameter with specific transport blocks through predefined mapping rules. This segmentation allows the network device and terminal device to independently determine which parameter corresponds to which block, resolving the information loss about mapping relationships while maintaining multiple parameter usage for improved reliability.
2Reliability
If multiple transport blocks are repeatedly sent to improve reliability, then transmission reliability is improved, but transmission delay increases
Solution Approach 1:
The patent employs periodic transmission of transport blocks using multiple spatial correlation parameters. By systematically repeating transmissions with different parameter associations according to predefined rules, the system achieves reliable delivery while optimizing timing to minimize overall transmission delay compared to sequential single-parameter transmission.
3Reliability
If spatial correlation parameter information is indicated for multiple repeated TBs, then transmission reliability is improved, but device complexity increases
Solution Approach 1:
The patent enables the terminal device to self-determine the mapping relationship between spatial correlation parameters and transport blocks using predefined association rules. This self-service mechanism eliminates the need for explicit signaling of mapping relationships, reducing device complexity while maintaining the ability to use multiple parameters for reliable transmission.
Data Source
AI summary
This application discloses a communication method and an apparatus, and relates to the communication field, so that a network device and a terminal device determine a mapping relationship between spatial correlation parameters and transport blocks when the transport blocks are repeatedly sent. The communication method includes: receiving first indication information, where the first indication information is used to indicate K spatial correlation parameters for receiving a transport block carried on N resources, K and N are integers greater than 1, and K≤N; determining a mapping relationship between the K spatial correlation parameters and the N resources; and receiving the transport block on the N resources based on the mapping relationship.