Adaptive Bandwidth Control for Cellular Networks
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Solution Overview
Problem
Communication systems with fixed channel bandwidths fail to optimize capacity utilization due to varying traffic loads, leading to inefficient frequency use across networks.
Innovation Solution
A base station adaptively controls channel bandwidth based on neighboring network traffic loads and available frequency bands, sharing control state information with mobile stations to adjust communication frequency bands accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed bandwidth is allocated to each network, then network simplicity and ease of operation are maintained, but frequency efficiency and capacity utilization deteriorate when traffic loads vary
Solution Approach 1:
The patent implements dynamic bandwidth allocation where the base station adjusts channel bandwidth based on real-time traffic load conditions. The bandwidth control unit receives traffic load information and dynamically modifies the bandwidth of downlink shared channels, transforming the static fixed bandwidth system into a dynamic adaptive system that responds to changing network conditions.
Solution Approach 2:
The patent changes the bandwidth parameter of communication channels based on traffic load conditions. The base station controller monitors traffic load and adjusts bandwidth parameters dynamically, allowing the system to optimize frequency efficiency by varying bandwidth from fixed values to adaptive values matching actual communication demands.
2Productivity
If bandwidth is dynamically adjusted based on traffic load, then frequency efficiency and capacity utilization are improved, but system complexity and control difficulty increase
Solution Approach 1:
The patent implements a feedback mechanism where the base station monitors traffic load conditions and uses this information to adjust bandwidth allocation. The bandwidth control unit receives feedback about actual traffic demands and continuously optimizes bandwidth allocation, creating a closed-loop control system that adapts to changing conditions while maintaining manageable complexity through systematic feedback processing.
Solution Approach 2:
The base station performs self-adjustment of bandwidth allocation based on its own monitoring of traffic load conditions. The system automatically detects when bandwidth changes are needed and implements adjustments without requiring external intervention, reducing the need for complex centralized control while improving capacity utilization through autonomous adaptation.
3Productivity
If neighboring network traffic information is collected and used for bandwidth control, then frequency efficiency across networks is improved, but information processing requirements and system complexity increase
Solution Approach 1:
The patent uses neighboring relationship information as an intermediary to coordinate bandwidth allocation across networks. The base station leverages information about adjacent networks' traffic loads and bandwidth usage to make informed allocation decisions, acting as a mediator that balances frequency efficiency across network boundaries while processing only relevant localized information rather than complete system-wide data.
Data Source
Figure 1A~1B
Figure 2
Figure 3~4
AI summary
Disclosed are a base station and mobile station to adaptively control a bandwidth of a channel. The base station includes a state information recognition unit to recognize neighboring-state information related with a traffic load of at least one neighboring network adjacent to a target network, a control state information transmitting unit to transmit control state information related with the controlled bandwidth of the target channel to mobile stations of the target network, and a bandwidth control unit to control a bandwidth of a target channel used in the target network according to a bandwidth of a channel used in the neighboring network based on the neighboring-state information.