Multi-Antenna Channel Interleaving for Data-Control Multiplexing
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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 scrambled, then 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 data and control information are transmitted separately in conventional systems, then transmission simplicity is maintained, but transmission efficiency and resource utilization deteriorate in multi-antenna systems
Solution Approach 1:
The patent combines data and control information into a single transmission stream, merging previously separate transmission paths. This allows both data and control information to be multiplexed together on the same physical channel, improving resource utilization and transmission efficiency in multi-antenna systems without requiring separate dedicated channels for each information type.
Solution Approach 2:
The patent segments the combined data and control information into distinct groups that are then interleaved. By dividing the information stream into manageable segments and applying interleaving techniques, the system maintains organizational structure while achieving efficient multiplexing, thus managing complexity through structured segmentation rather than chaotic mixing.
2Productivity
If channel interleaving is performed without optimized multiplexing, then implementation simplicity is maintained, but multiplexing efficiency and resource utilization deteriorate
Solution Approach 1:
The patent performs preliminary grouping and organization of data and control information before the actual interleaving process. By pre-processing the information streams to prepare them for interleaving, the system achieves more efficient multiplexing while reducing the complexity of the main interleaving operation. This preliminary arrangement optimizes the input for subsequent processing stages.
Solution Approach 2:
The patent implements dynamic interleaving patterns that can adapt to different transmission conditions and information types. Rather than using a fixed interleaving scheme, the system dynamically adjusts the multiplexing approach based on channel conditions, information priority, and resource availability, thereby improving multiplexing efficiency while managing processing complexity through adaptive behavior.
3Reliability
If multi-layer transmission is implemented without optimized interleaving, then transmission capacity is increased, but signal quality and reliability deteriorate due to poor resource distribution
Solution Approach 1:
The patent applies different interleaving strategies to different portions of the transmitted signal based on local requirements. Critical control information receives different treatment compared to data streams, with localized optimization of interleaving patterns to ensure signal quality where most needed. This local quality approach maintains reliability without requiring uniformly complex interleaving across the entire transmission.
Solution Approach 2:
The patent extends the interleaving operation into additional dimensions by applying interleaving across multiple layers and spatial streams simultaneously. Rather than simple time-domain interleaving, the system utilizes multi-dimensional interleaving that distributes information across layers, codes, and spatial resources, thereby improving signal quality and reliability through diversified resource distribution while managing complexity through structured multi-dimensional organization.
Data Source
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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.