Wireless Terminal Notifier for Channel Set Assignment
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Solution Overview
Problem
Current wireless communication systems face limitations in channel assignment efficiency due to restrictions on channel use and frequency band utilization, particularly in OFDMA communication, where specific information needed for effective channel assignment is not adequately collected or notified from terminals to the base station.
Innovation Solution
A wireless communication terminal is equipped with a notifier to inform the base station about the number of channel sets, each comprising one or more consecutive channels, allowing independent signal transmission and reception, and a manager to perform channel assignment based on this information, enhancing channel utilization efficiency through MU-MC communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the reference channel is used as a base for channel extension, then the channel width can be extended, but the number of terminals that can perform communication simultaneously is limited to one
Solution Approach 1:
The patent segments the frequency band into multiple independent channel sets rather than using a single reference channel as base. Each channel set can be independently assigned to different terminals, allowing simultaneous communication. This segmentation resolves the contradiction by enabling multiple terminals to use different channel sets without interfering with each other, while still supporting channel width extension within each set.
2Loss of information
If frequency band information is notified based on hardware configuration limitation, then the base station can be aware of the restriction, but the number of frequency bands that can be used at the same time is restricted
Solution Approach 1:
The patent introduces dynamic channel set configuration where terminals can flexibly select and notify the base station about available channel sets based on actual hardware capability rather than fixed restrictions. The terminal notifies the base station of the number of channel sets it can use, allowing dynamic adaptation. This resolves the contradiction by enabling the system to utilize more frequency bands simultaneously while still respecting individual terminal hardware limitations through informed notification.
3Productivity
If OFDMA communication is performed with channel assignment, then simultaneous transmission to multiple terminals is enabled, but the base station needs to collect effective characteristic information from each terminal
Solution Approach 1:
The patent extracts the essential information needed for channel assignment by having terminals notify the base station of the number of channel sets they can use. This simplified notification mechanism provides the base station with sufficient information to perform effective channel assignment without requiring complex information collection from all terminals. The patent takes out only the critical capability information needed for OFDMA operation, reducing the complexity burden while maintaining simultaneous transmission capability.
Data Source
Figure 1
Figure 2(A)~3(B)
Figure 4
AI summary
According to one embodiment, a wireless communication terminal, includes a notifier. The notifier notifies a first information showing a number of channel sets each of which is a set of one or two or more consecutive channels out of a plurality of channels in a predetermined frequency band and among each of which the wireless communication terminal is able to separately transmit and receive a signal.