Wireless Communication Apparatus Dynamic NOMA OMA Switching
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Solution Overview
Problem
Current wireless communication systems, particularly in the context of 5G NR, face challenges in achieving higher frequency use efficiency compared to LTE, necessitating improved transmission efficiency across various use cases.
Innovation Solution
A wireless communication apparatus and method that dynamically switch between non-orthogonal multiple access (NOMA) and orthogonal multiple access (OMA) settings for transmission and reception control, optimizing parameter settings, resource allocation, and modulation schemes based on the access method to enhance system efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If orthogonal multiple access (OMA) is used for wireless communication, then system reliability and ease of operation are improved, but frequency use efficiency and transmission efficiency deteriorate
Solution Approach 1:
The patent implements dynamic switching between OMA and NOMA access methods based on communication conditions, user requirements, and channel states. The base station controller selectively activates NOMA for scenarios requiring high frequency efficiency while maintaining OMA for reliability-critical communications, thereby resolving the contradiction between system reliability and frequency use efficiency through adaptive, condition-based access method selection
Solution Approach 2:
The patent changes the access method parameter from a fixed OMA configuration to a variable state that can switch between OMA and NOMA. By adjusting the access method parameter according to communication conditions, the system achieves both high reliability (when using OMA) and high frequency use efficiency (when using NOMA), effectively resolving the contradiction between these two opposing requirements
2Productivity
If non-orthogonal multiple access (NOMA) is used for wireless communication, then frequency use efficiency and transmission efficiency are improved, but system complexity and difficulty of detection increase
Solution Approach 1:
The patent segments the wireless communication system into distinct operational modes (OMA mode and NOMA mode) that can be independently controlled and switched. This segmentation allows the complex NOMA functionality to be activated only when needed, while the simpler OMA mode handles routine communications, thereby managing system complexity while maintaining high transmission efficiency when NOMA is employed
Solution Approach 2:
The patent introduces a base station controller as an intermediary that manages the switching between OMA and NOMA access methods. This intermediary coordinates the complex NOMA operations, handles the detection and decoding processes, and manages resource allocation, thereby reducing the burden on individual user devices and centralizing the complexity management to improve overall system efficiency
3Ease of operation
If a fixed access method is used for wireless communication, then device complexity is reduced and ease of operation is improved, but adaptability to different use cases deteriorates
Solution Approach 1:
The patent makes the wireless communication system universal by enabling it to perform both OMA and NOMA access methods within a single system framework. The base station and user devices are equipped with multi-functional capabilities to support both access methods, allowing the system to adapt to diverse use cases (e.g., eMBB, mMTC, URLLC) while maintaining ease of operation through automated switching and unified resource management
Data Source
AI summary
To provide a wireless communication apparatus that makes it possible to perform wireless communication more efficiently by switching setting or the like for transmission or reception in accordance with whether the wireless communication is non-orthogonal multiple access or orthogonal multiple access. [Solution] There is provided a wireless communication apparatus including: a communication section that performs wireless communication; and a control section that selects setting to be used for transmission control or reception control by the communication section in accordance with whether the wireless communication is non-orthogonal multiple access or orthogonal multiple access.