Wireless Control Signaling With LDPC Coding to Reduce Dummy Bits
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Solution Overview
Problem
In wireless communication systems, existing methods dissipate communication resources due to a large number of dummy bits during the encoding of control information, leading to inefficient use of communication resources.
Innovation Solution
The method involves generating coded blocks by Low Density Parity Check (LDPC)-encoding control information, distinguishing between types of control information, and transmitting frames with a fixed number of bits for variable-bit signaling information, including frequency information for Radio Frequency (RF) channels, to optimize encoding and reduce dummy bits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional encoding methods are used for control information, then the control information can be transmitted, but a large number of dummy bits are required which dissipate communication resources
Solution Approach 1:
The patent extracts and separates the essential control information from dummy bits by implementing a selective encoding scheme. The encoder identifies and encodes only the necessary signaling information (such as frequency information for RF channels) while excluding unnecessary dummy bits, thereby reducing the total transmitted data volume and improving communication resource efficiency.
Solution Approach 2:
The patent changes the encoding parameters by implementing a variable-length encoding scheme for control information. Instead of using fixed-length encoding that includes dummy bits, the system dynamically adjusts the code length based on the actual information content, thereby reducing the quantity of transmitted bits and improving resource utilization.
2Loss of energy
If variable number of bits is used for signaling information, then communication resource efficiency is improved, but the receiver requires additional fixed signaling information to properly decode the variable-bit information
Solution Approach 1:
The patent applies preliminary action by transmitting fixed signaling information before the variable-bit control information. This preliminary fixed signaling provides the receiver with necessary decoding parameters (such as code rate, modulation scheme, and length information) in advance, enabling the receiver to properly decode the subsequent variable-bit information without requiring complex adaptive mechanisms.
Solution Approach 2:
The patent introduces fixed signaling information as an intermediary element between the transmitter and receiver. This intermediary carries essential metadata that mediates the decoding process, allowing the receiver to interpret variable-bit control information correctly without directly requiring complex variable-length decoding logic.
3Productivity
If dummy bits are reduced in control information encoding, then communication resource utilization is improved, but the encoding scheme becomes more complex
Solution Approach 1:
The patent segments the control information into distinct fields with predetermined structures. By dividing the signaling information into organized segments (such as frequency information fields, channel identification fields, etc.), the encoder can systematically process each segment according to fixed rules, reducing the need for complex overall encoding logic while minimizing dummy bits.
Solution Approach 2:
The patent implements dynamic encoding where the encoder adapts the code length and structure based on the actual content of the control information. This dynamic approach allows the system to optimize resource utilization by encoding only necessary information while maintaining manageable complexity through predefined adaptation rules and lookup tables.
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, at least one coded block is generated from signaling information having a variable number of bits included in the physical layer signaling information, and a frame including the at least one coded block is transmitted. The frame includes other signaling information having a fixed number of bits required for receiving the signaling information having the variable number of bits.