RV Mapping for Multi-TRP Coordinated Transmission
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Solution Overview
Problem
The inability to determine the mapping relationship between redundancy versions (RVs) transmitted on multiple TRPs/PANELs and transmission occasions in coordinated multi-point transmission schemes 3 and 4, leading to an inability to configure data transmission effectively.
Innovation Solution
A data transmission method that involves receiving redundancy version (RV) identification information, determining an RV basic sequence, and establishing a correspondence relationship between each RV in the sequence and each transmission occasion, allowing for clear mapping between RVs and transmission occasions during coordinated transmission between multiple TRPs/PANELs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If coordinated multi-point transmission schemes 3 and 4 (TDM modes) are adopted, then transmission performance and reliability are improved, but the mapping relationship between redundancy versions and transmission occasions cannot be determined, leading to inability to configure data transmission
Solution Approach 1:
The patent applies preliminary action by pre-defining RV sequences and establishing predetermined mapping relationships between redundancy versions and transmission occasions before actual data transmission occurs. The base station and terminal both have pre-configured knowledge of which RV corresponds to which transmission occasion, eliminating the need for real-time configuration decisions and enabling proper data transmission configuration.
2Area of stationary object
If multi-TRP/PANEL transmission technology is deployed, then coverage and quality of service are improved, but complexity in determining RV mapping relationships increases
Solution Approach 1:
The patent applies segmentation by dividing the RV mapping problem into separate, manageable components. Each TRP/PANEL has its own RV sequence, and the mapping relationship is segmented by transmission occasion. This allows the complex multi-TRP scenario to be handled through systematic, discrete mappings rather than a single complex configuration problem.
Solution Approach 2:
The patent applies universality by creating a general framework that works across all TRP/PANEL configurations. The same RV sequence and mapping principles apply regardless of the specific number or arrangement of TRPs, making the solution universally applicable to various multi-point transmission scenarios without requiring separate configuration for each case.
Data Source
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AI summary
The present disclosure provides a data transmission method, a device, a terminal and a base station, wherein the data transmission method includes: receiving redundancy version (RV) identification information sent by a base station; determining an RV basic sequence according to the RV identification information; determining a correspondence relationship between each RV in the RV basic sequence and each transmission occasion; receiving, at each transmission occasion by using a corresponding RV according to the correspondence relationship, physical downlink shared channel (PDSCH) data sent by the base station; wherein, the RV basic sequence is one of at least two predefined RV sequences.