Channel Interleaving Structure for Pipelined Wireless Decoding
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Solution Overview
Problem
Conventional wireless communication systems face challenges with poor time and frequency diversity, especially in fast-changing channel conditions, and decoder latency due to serial or parallel transmission structures, which hinder efficient data transmission and decoding processes.
Innovation Solution
A hybrid transmission structure is employed, where each transport block is split into multiple code blocks, further divided into segments, and transmitted in different time slots of a subframe, allowing for pipelined decoding and optimized time/frequency diversity by using all available frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional transmission structures are used, then device complexity is reduced, but time diversity and frequency diversity are poor
Solution Approach 1:
The patent divides each code block into multiple code block segments and transmits them in different time slots. This segmentation approach enhances time diversity by spreading code block segments across multiple time slots and frequency resources, allowing the receiver to combine segments from different channel conditions, thereby improving reliability without requiring complex transmission structures
Solution Approach 2:
The patent introduces a new transmission structure that utilizes both time and frequency dimensions simultaneously. By transmitting code block segments in different time slots across different frequencies, the system creates a two-dimensional diversity structure that improves both time and frequency diversity while maintaining manageable complexity through structured resource allocation
2Productivity
If serial transmission structure is used, then device complexity is reduced, but decoder latency increases
Solution Approach 1:
The patent enables the receiver to begin decoding code blocks as soon as all their segments are received, rather than waiting for the entire subframe to complete. This preliminary action approach allows overlapping decoding operations for different code blocks, reducing overall decoder latency while maintaining manageable complexity through pipelined processing
3Loss of time
If parallel transmission structure is used, then decoder latency is reduced, but device complexity increases
Solution Approach 1:
The patent segments code blocks into multiple code block segments that can be transmitted and decoded in parallel across different time slots and frequencies. This segmentation enables the receiver to process multiple segments simultaneously through pipelined decoding, reducing latency while keeping the transmission structure organized and manageable through systematic resource allocation
Data Source
AI summary
Systems and methodologies are described that facilitate employing a hybrid transmission structure in a wireless communication environment. Each transport block (e.g., MAC PDU) can be split into multiple code blocks. Moreover, each of the code blocks can be further divided into two or more code block segments. Further, code block segments from a given code block can be transmitted over a channel during disparate time slots of a subframe. Also, within a given subframe, code block segments corresponding to differing code blocks can be transmitted sequentially in time. Utilization of the foregoing can enable employment of a pipelined decoder structure at a receiver while allowing for optimization of time/frequency diversity.