NOMA Power Allocation Grouping for Wireless Control Overhead
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In 5G communication systems, the increased complexity of downlink data transmission in NOMA-based wireless communication systems leads to a large amount of control information required for decoding, causing system overload due to simultaneous use of resources by multiple terminals, which complicates signal decoding and increases control information size.
Innovation Solution
The solution involves determining power allocation for shared resources among terminals based on channel information, transmitting resource information including power details, and using predefined resource allocation patterns and implicit transmission power to minimize control information size by grouping terminals and optimizing resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple terminals simultaneously use shared resources in NOMA-based wireless communication, then resource utilization efficiency is improved, but control information size increases and system overload occurs
Solution Approach 1:
The patent groups multiple terminals into terminal groups that share the same resource blocks and power allocation parameters. By merging the control information requirements of multiple terminals into a single group-level control message, the overall control information size is reduced while maintaining the ability to serve multiple terminals simultaneously through NOMA.
Solution Approach 2:
The patent creates universal control information structures that can apply to multiple terminals within a group. Instead of providing individualized control parameters for each terminal, the system uses group-level parameters that universally apply to all terminals in the group, reducing redundancy and control overhead.
2Measurement precision
If detailed power allocation information is provided for each terminal, then signal decoding accuracy is improved, but control information size increases
Solution Approach 1:
The patent combines power allocation information for multiple terminals into a single group-level power parameter. Instead of transmitting individual power values for each terminal, the system transmits one power allocation parameter that applies to the entire terminal group, reducing control information size while maintaining sufficient decoding accuracy through the group-level power control.
Solution Approach 2:
The patent changes the granularity of power allocation parameters from individual-terminal level to group-level. By aggregating power allocation control to the group level rather than providing fine-grained individual parameters, the system reduces control information overhead while maintaining acceptable signal decoding performance through group-based power management.
3Adaptability or versatility
If individual resource allocation is performed for each terminal, then resource allocation flexibility is improved, but device complexity increases
Solution Approach 1:
The patent segments terminals into distinct groups based on their resource allocation requirements. By dividing the terminal population into manageable groups that share common resource parameters, the system reduces the complexity of individual resource management while maintaining flexibility through group-level allocation. Each group can be independently managed with its own resource block assignments and power parameters.
Solution Approach 2:
The patent implements universal resource allocation rules at the group level that can be applied to multiple terminals simultaneously. Instead of managing each terminal individually, the system uses group-level allocation mechanisms that universally apply to all terminals within a group, reducing system complexity while maintaining resource allocation flexibility through group-based management.
Data Source
AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A base station operation method in a wireless communication system, according to an embodiment of the present invention, comprises the steps of: determining, on the basis of channel information received from each of a plurality of terminals, power to be used by each of the plurality of terminals with respect to resources allocated to be overlaid and used by the plurality of terminals; and transmitting resource information, which comprises information about the determined power, to each of the plurality of terminals.