Variable Control Channel Element Allocation for Wireless Signal Transmission
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in transmitting and receiving control information, particularly in managing Hybrid Automatic Repeat reQuest (HARQ) acknowledgments and other control channel elements, which affects the overall performance and reliability of signal transmission.
Innovation Solution
A method and apparatus for efficiently transmitting and receiving control information in a wireless communication system by determining the number of control channel element units based on the bit number of control information, where each unit consists of 12 continuous subcarriers with specific configurations of demodulation reference signals and user information subcarriers, allowing flexible allocation and spacing to optimize signal processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of control channel element units is fixed, then the structure is simple and easy to implement, but the efficiency of transmitting control information with varying bit numbers is reduced
Solution Approach 1:
The patent applies dynamics by making the number of control channel element units variable rather than fixed. The control channel element units are dynamically allocated based on the actual bit number of control information that needs to be transmitted, allowing the system to adapt to different transmission requirements and improve efficiency without excessive complexity.
Solution Approach 2:
The patent changes the parameter of control channel element unit quantity from a static value to a dynamic value that varies with the control information bit number. This parameter change allows the system to optimize transmission efficiency by matching the resource allocation to the actual information transmission needs.
2Adaptability or versatility
If control channel elements are densely allocated, then the signal processing is efficient, but the flexibility in allocating resources for different control information sizes is reduced
Solution Approach 1:
The patent segments the control channel into multiple control channel element units, where each unit can be independently allocated. This segmentation allows flexible combination of units to match different control information sizes, providing adaptability while maintaining efficient signal processing within each unit.
Solution Approach 2:
The patent implements dynamic allocation of control channel element units based on the actual control information bit number. This dynamic approach provides flexibility in resource allocation while maintaining signal processing efficiency by avoiding both over-allocation and under-allocation of resources.
Data Source
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AI summary
The present invention relates to a wireless communication system, and particularly, to a method and an apparatus for same, the method comprising the steps of: generating a UCI; mapping the UCI on an L number of uplink control channel units; and transmitting the mapped UCI, wherein each of the uplink control channel units comprises an Nc number of REs in a single OFDMA symbol, and the plurality of REs include an Nr number of RS transmission REs and an Nd number of UCI transmission REs, wherein Nc is the sum of Nr and Nd, and wherein L is an integer greater than or equal to one and is variable.