Wireless Control Signaling Encoding With Fewer Dummy Bits
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Solution Overview
Problem
In wireless communication systems, especially digital broadcasting, a significant number of dummy bits are used during encoding of control information, leading to inefficient use of communication resources.
Innovation Solution
The method involves generating coded blocks by LDPC-encoding control information, distinguishing between fixed and variable bit signaling information, and transmitting these blocks in a wireless digital broadcasting system, where the number of Radio Frequency (RF) channels is included in the fixed bit signaling information, allowing for efficient encoding and transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control information is encoded with dummy bits to ensure proper framing and synchronization, then reliability of signal transmission is improved, but communication resource efficiency deteriorates due to increased bit overhead
Solution Approach 1:
The control information is segmented into multiple codeblocks based on the number of information bits. When the control information exceeds a threshold, it is divided into first and second codeblocks, with the first containing most significant bits and the second containing less significant bits. This segmentation allows efficient encoding without excessive dummy bits while maintaining transmission reliability.
Solution Approach 2:
The patent dynamically adjusts encoding parameters based on the size of control information. Different code rates and codeblock structures are applied depending on whether the control information is small or large, optimizing the balance between reliability and resource efficiency for different transmission scenarios.
2Device complexity
If a unified encoding scheme is used for all control information, then device complexity is reduced, but encoding efficiency deteriorates due to suboptimal handling of different information sizes
Solution Approach 1:
The encoding scheme is made dynamic by adapting the codeblock structure and rate matching parameters based on the actual size of control information. The system transitions between different encoding configurations (single codeblock vs. multiple codeblocks) depending on information length, achieving high efficiency without excessive complexity.
Solution Approach 2:
The patent applies partial encoding actions by using different rates for different codeblocks. The first codeblock uses a first rate while the second codeblock uses a second rate, allowing optimized encoding for each segment rather than applying a single uniform rate to all control information.
Data Source
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AI summary
A method and apparatus for transmitting/receiving control information in a wireless communication system are provided, in which physical layer signaling information to be transmitted in a frame is determined, a coded block is generated from signaling information having a fixed number of bits included in the physical layer signaling information, and a frame including the coded block is transmitted. The signaling information having the fixed number of bits includes information required for receiving other signaling information having a variable number ofbits.