Dynamic Bandwidth Allocation for Mobile Fronthaul Multiplexing
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Solution Overview
Problem
Current multiplex transmission systems inefficiently allocate Mobile Fronthaul (MFH) bands to multiple operators, leading to increased required bandwidth due to fixed allocation methods, which cannot dynamically adjust based on varying frequency usage among operators.
Innovation Solution
A multiplex transmission system that includes a band allocation determination unit to dynamically allocate uplink and downlink transmission bands to each operator based on available frequency bandwidth, using multiplexing units for time or wavelength multiplexing, and a band allocation change unit to adjust allocations according to traffic collection and allocation requests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fixed allocation method is used for MFH bands, then allocation simplicity is maintained, but total required bandwidth increases due to inability to dynamically adjust
Solution Approach 1:
The patent implements dynamic allocation of MFH bands by allowing the system to adjust bandwidth allocation for each operator based on real-time traffic conditions. The allocation determination unit continuously monitors usage status and modifies allocation parameters, transforming the static fixed allocation into a dynamic adaptive system that optimizes bandwidth utilization while maintaining operational simplicity.
Solution Approach 2:
The system changes allocation parameters (bandwidth amounts, frequency bands) based on monitored traffic conditions and usage status. By dynamically adjusting these parameters rather than maintaining fixed values, the system reduces total required bandwidth while adapting to varying operator needs, resolving the contradiction between allocation simplicity and bandwidth efficiency.
2Productivity
If frequency resources are shared among multiple operators, then resource utilization efficiency improves, but allocation management complexity increases
Solution Approach 1:
The allocation determination unit automatically monitors traffic conditions, analyzes usage status, and adjusts bandwidth allocation without requiring manual intervention. This self-service mechanism enables efficient frequency resource sharing among multiple operators while keeping allocation management complexity manageable through automation rather than manual processes.
Solution Approach 2:
The system implements continuous monitoring of traffic conditions and usage status, using this feedback information to dynamically adjust bandwidth allocation. This closed-loop control approach optimizes resource utilization efficiency by allocating bandwidth based on actual needs, while the automated feedback processing keeps management complexity manageable.
3Reliability
If more frequency bandwidth is allocated to operators with higher traffic, then service quality for high-traffic operators improves, but total MFH band requirement increases
Solution Approach 1:
The system dynamically changes bandwidth allocation parameters based on monitored traffic conditions and service requirements. By adjusting allocation parameters in real-time rather than using fixed allocations, the system ensures high service quality for high-traffic operators while optimizing total bandwidth utilization to reduce the overall MFH band requirement.
Solution Approach 2:
The patent implements dynamic bandwidth allocation that adapts to varying traffic conditions and service quality requirements. This dynamic approach allows the system to allocate more bandwidth to high-traffic operators when needed while reducing allocation during low-traffic periods, thereby maintaining service quality without permanently increasing total MFH band requirements.
Data Source
AI summary
An uplink transmission band and a downlink transmission band that are allocated to each of a plurality of users are determined based on allocation information indicating allocation of a frequency bandwidth available to each of the plurality of users, and are output as uplink transmission band allocation information and downlink transmission band allocation information, respectively. Based on the downlink transmission band allocation information, downlink signals output from a plurality of wireless control devices toward a plurality of wireless devices for each of the plurality of users, and the uplink transmission band allocation information are multiplexed, and the multiplexed signal is demultiplexed into downlink signals for each of the plurality of users and the uplink transmission band allocation information. Based on the demultiplexed uplink transmission band allocation information, the uplink transmission band allocated to each of the plurality of users is changed, and uplink signals output from the plurality of wireless devices toward the plurality of wireless control devices for each of the plurality of users are multiplexed according to the changed uplink transmission band and then, the multiplexed signal is demultiplexed into the uplink signals for each of the plurality of users.