NOMA Power Allocation Using Terminal Capability Identification
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Solution Overview
Problem
Existing non-orthogonal multiple access (NOMA) technologies in satellite communication systems require separate devices for channel state monitoring, which is inefficient and complex.
Innovation Solution
Implementing non-orthogonal multiple access by identifying terminal transmission and reception capabilities using identification numbers without separate channel monitoring devices, and allocating transmission power based on these capabilities through a predetermined database.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate channel monitoring devices are used to monitor channel state in NOMA satellite communication, then channel state information can be obtained, but device complexity increases and implementation becomes inefficient
Solution Approach 1:
The patent extracts the channel state information acquisition function from separate monitoring devices and relocates it to the terminal's existing transmission capability reporting mechanism. By using the terminal's identification number to retrieve channel state information from a database, the system eliminates the need for dedicated channel monitoring devices while maintaining accurate channel state knowledge for NOMA power allocation.
Solution Approach 2:
The terminal performs self-identification and self-reporting of its transmission capability using its identification number. The system uses the terminal's own characteristics (stored in the database) to determine channel state information, eliminating the need for external monitoring devices. The terminal essentially serves itself by providing the information needed for power allocation based on its inherent transmission capabilities.
2Ease of operation
If transmission power is allocated without considering terminal capabilities, then power allocation is simplified, but signal demodulation performance deteriorates and interference increases
Solution Approach 1:
The patent applies local quality by tailoring transmission power allocation to individual terminal characteristics. Instead of uniform power allocation, the system retrieves and uses specific channel state information associated with each terminal's identification number to determine appropriate power levels. This ensures that power allocation is optimized for each terminal's specific capabilities while maintaining overall system efficiency.
Solution Approach 2:
The system performs preliminary retrieval of channel state information from the database using the terminal's identification number before actual power allocation occurs. This preliminary action ensures that the necessary capability information is ready and available when power allocation decisions need to be made, enabling informed power control without adding real-time complexity.
Data Source
AI summary
Disclosed is a technology for performing, in an electronic apparatus included in a central station, an uplink- or downlink-related operation by allocating a transmission power intensity based on a transmission and reception capability of a terrestrial terminal.