Dynamic Radio Resource Allocation in Wireless Communication Systems
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Solution Overview
Problem
In coordinated OFDMA wireless communication systems, the same frequency resources are allocated for both downlink and uplink communications, leading to inefficient use of resources when the amount of data in uplink communication is small, as a wide frequency bandwidth is unnecessarily consumed.
Innovation Solution
A wireless communication system that dynamically allocates different radio resources for downlink and uplink communications by allowing the sharing of radio resources between sub-wireless communication systems, enabling flexible allocation based on the specific data requirements of each communication direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the same frequency resources are allocated for both downlink and uplink communications in coordinated OFDMA systems, then resource allocation simplicity is maintained, but radio resource efficiency deteriorates when uplink data amount is small
Solution Approach 1:
The patent implements dynamic resource allocation where the frequency bandwidth allocated for uplink communication is adjusted based on the actual data amount. When uplink data is small, a narrower frequency bandwidth is allocated, and when uplink data is large, a wider frequency bandwidth is allocated. This dynamic adjustment resolves the contradiction by adapting resource allocation to actual needs rather than using fixed allocation, thereby improving radio resource efficiency without requiring overly complex predetermined allocation schemes
Solution Approach 2:
The patent changes the frequency bandwidth parameter dynamically based on uplink data requirements. The system monitors the amount of uplink data and adjusts the frequency resource allocation parameter accordingly, allocating wider bandwidth when needed and narrower bandwidth when not needed. This parameter change approach allows the system to optimize resource efficiency while maintaining manageable allocation complexity through standardized adjustment mechanisms
2Productivity
If a wide frequency bandwidth is allocated for uplink communication, then uplink communication capacity is improved, but radio resource consumption increases unnecessarily when uplink data amount is small
Solution Approach 1:
The patent applies partial action by allocating frequency resources proportional to the actual uplink data requirements rather than always allocating full bandwidth. When uplink data is small, only a portion of the available frequency bandwidth is allocated for uplink communication, while the remaining resources are reserved or allocated for other purposes. This prevents excessive resource consumption while maintaining the capability to provide full bandwidth allocation when uplink data volume justifies it
3Productivity
If different frequency resources are allocated dynamically for downlink and uplink communications, then radio resource efficiency is improved, but resource allocation complexity increases
Solution Approach 1:
The patent manages dynamic resource allocation complexity by implementing systematic parameter change mechanisms. The frequency bandwidth allocation parameter is adjusted based on standardized criteria such as uplink data amount thresholds, traffic patterns, and quality of service requirements. This structured approach to parameter changes allows the system to achieve differentiated resource allocation for downlink and uplink while maintaining manageable complexity through consistent adjustment rules and monitoring protocols
Data Source
AI summary
In a wireless communication system including a first sub-wireless communication system for managing a first radio resource and a second sub-wireless communication system for managing a second radio resource, a terminal apparatus connected to the first sub-wireless communication system is capable of performing communication using the second radio resource in addition to the first radio resource.