Multi-Antenna Channel Interleaving with Layer-Wise Control Bit Mapping
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently performing channel interleaving in multi-antenna systems, particularly in multiplexing data and control information effectively.
Innovation Solution
A method and apparatus for channel interleaving in a multi-antenna wireless communication system, where channel quality indicator (CQI) information and coded data are configured as vectors, and coded rank indicator (RI) and acknowledgement (ACK)/negative ACK (NACK) information are repeated and mapped to an interleaver matrix, generating an output vector sequence by reading the matrix column by column.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If channel interleaving is performed in conventional wireless communication systems, then data transmission is achieved, but efficient multiplexing of data and control information in multi-antenna systems is not achieved
Solution Approach 1:
The input bit sequence is divided into multiple segments corresponding to different transmission layers. Each segment is independently interleaved and mapped to corresponding antenna ports, enabling efficient multiplexing of data and control information across multiple layers while maintaining manageable complexity through modular processing
Solution Approach 2:
The patent extends conventional single-dimension interleaving to multi-dimensional interleaving across transmission layers and antenna ports. By adding the layer dimension to the traditional sequence manipulation, the system achieves efficient multiplexing in multi-antenna environments without proportionally increasing processing complexity
2Adaptability or versatility
If conventional interleaving methods are used, then simple processing is maintained, but support for multi-layer transmission with low cubic metric is not achieved
Solution Approach 1:
The interleaving method dynamically adapts to the number of transmission layers configured in the system. The processing structure automatically adjusts to support different layer configurations (single-layer, multi-layer) without requiring fundamentally different algorithms, enabling versatile multi-layer transmission support while controlling complexity through adaptive rather than static design
Solution Approach 2:
The patent designs a universal interleaving framework that handles both data and control information across multiple transmission layers using the same core processing logic. This multi-functional approach supports various transmission scenarios (different layer counts, different information types) without requiring separate specialized procedures for each case
Data Source
AI summary
The present application relates to a method in which a terminal performs channel interleaving in a multi-antenna wireless communication system. More particularly, the method comprises the following steps: constructing both channel quality indicator (CQI) information and coded data information into preset bit-wide vectors to generate a first interleaver input vector sequence; repeating both rank indicator (RI) information and acknowledgement/negative acknowledgement (ACK/NACK) information per the number (NL) of transmission layers to generate a second interleaver input vector sequence of preset bit-wide vectors and a third interleaver input vector sequence of preset bit-wide vectors; mapping the first interleaver input vector sequence, the second interleaver input vector sequence, and the third interleaver input vector sequence to an interleaver matrix, respectively; and reading the interleaver matrix by a column basis to generate an output vector sequence. The preset bit-wide is defined by the product of a modulation order (Qpm) and the number (NL) of transmission layers.