Multi-Carrier Codeword Mapping to Cut NR Signaling Overhead
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Solution Overview
Problem
Current New Radio (NR) designs face large common signaling overhead due to the one-to-one relationship between serving cells and carriers, which is exacerbated by Carrier Aggregation requiring strong UE capabilities and inefficient symbol-level processing.
Innovation Solution
A multi-carrier data processing method that determines modulation orders and mapping layer numbers for codewords across multiple carriers, allowing for same or varying orders and layer numbers, and performs symbol-level processing to optimize transmission data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If Carrier Aggregation is used to achieve high service transmission rates, then transmission rate is improved, but signaling overhead increases and device complexity increases
Solution Approach 1:
The patent merges multiple carriers into a single multi-carrier serving cell, allowing one cell to correspond to multiple carriers. This consolidation reduces the number of separate serving cells needed, thereby reducing common signaling overhead while maintaining the high transmission rates achieved through carrier aggregation.
Solution Approach 2:
The patent enables a single serving cell to serve multiple carriers universally, rather than requiring one-to-one mapping. This multi-functional approach allows the same cell structure and signaling mechanisms to handle multiple carriers, reducing overall signaling overhead and system complexity.
2Productivity
If Carrier Aggregation is used to achieve high service transmission rates, then transmission rate is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple carriers under a single serving cell management structure, simplifying the UE's cell management capabilities. Instead of needing to independently manage multiple serving cells, the UE handles one multi-carrier cell, reducing processing complexity while maintaining high data rates through the aggregated carriers.
Solution Approach 2:
The patent creates a universal serving cell structure that can accommodate multiple carriers with potentially different configurations. This allows the UE to use a single cell management framework that universally handles various carrier scenarios, reducing the need for specialized handling of each carrier and lowering overall device complexity.
3Ease of operation
If one-to-one relationship between serving cells and carriers is maintained, then processing simplicity is preserved, but signaling overhead increases
Solution Approach 1:
The patent merges multiple carriers into one serving cell, reducing the total number of serving cells required. This consolidation directly reduces common signaling overhead that is cell-specific, while the processing remains relatively simple as the cell structure itself doesn't change fundamentally.
Data Source
AI summary
The present application provides a multi-carrier data processing method and device. The method includes: determining, by a transmitter, a modulation order and a mapping layer number of a codeword of a scheduled transport block on multiple carriers, wherein the multiple carriers are carriers in a multi-carrier serving cell; performing, by the transmitter, symbol-level processing on the codeword according to the modulation order and the mapping layer number to obtain transmission data; sending, by the transmitter, the transmission data to a receiver. For one codeword, modulation orders on the multiple carriers are the same and mapping layer numbers on the multiple carriers are the same; or, for one codeword, modulation orders on the multiple carriers are the same and mapping layer numbers on the multiple carriers are different; or, for one codeword, modulation orders on the multiple carriers are different and mapping layer numbers on the multiple carriers are different.