Femtocell Management Apparatus Resource Allocation via Interference Figures
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Solution Overview
Problem
Existing femtocell technologies face challenges in efficiently allocating wireless resources in densely distributed areas, leading to heavy computational burdens, increased costs, and inability to guarantee quality of service due to interference, especially in LTE networks.
Innovation Solution
A network system comprising user equipment, femtocells, and a femtocell management apparatus that establishes an interference figure and dynamically allocates resource blocks based on request signals and interference data, reducing computational loads and costs while improving resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional technologies allocate wireless resources through massive computations and frequent sensing operations by femtocells, then resource allocation can be performed, but the computational burden on femtocells becomes very heavy and additional cost in terms of CPUs, memories and etc. is needed
Solution Approach 1:
The patent introduces a resource allocation server as an intermediary component that performs the complex resource allocation computations centrally. The femtocell only needs to transmit measurement information (interference figure) to the server, which then calculates the optimal resource allocation and sends back control information. This mediator approach transfers the heavy computational burden from the femtocell to the server, resolving the contradiction between resource allocation capability and device complexity.
Solution Approach 2:
The patent replaces the mechanical/computational system of local resource allocation with a communication-based system. Instead of femtocells performing complex computations locally, they use communication to transmit interference figures to the server, which then determines resource allocation through computational algorithms. This substitution eliminates the need for heavy computational hardware in femtocells while maintaining resource allocation functionality.
2Adaptability or versatility
If conventional technologies perform frequent sensing operations to allocate wireless resources, then resource allocation can be dynamically adjusted, but the complexity of operation increases and it becomes difficult to serve a large number of connections
Solution Approach 1:
The patent implements preliminary action by having the resource allocation server pre-calculate optimal resource allocations based on interference figures transmitted by femtocells. The server maintains a database of interference information and pre-determines resource allocation strategies before actual communication occurs. This allows the system to handle large numbers of connections efficiently without requiring frequent complex sensing operations during active communication.
Solution Approach 2:
The patent establishes a feedback mechanism where femtocells transmit interference figures to the resource allocation server, which then sends back resource allocation control information. This feedback loop enables dynamic adaptation to changing conditions while simplifying operation, as the server automatically adjusts allocations based on received interference data without requiring complex local decision-making at the femtocell level.
3Reliability
If conventional technologies allocate different wireless resources to prevent interference between femtocells, then interference can be avoided, but the reusing rate of wireless frequency bands decreases and resource allocation becomes inflexible
Solution Approach 1:
The patent introduces dynamics into resource allocation by enabling the resource allocation server to dynamically adjust resource assignments based on real-time interference figures transmitted by femtocells. Instead of static resource allocation, the system continuously updates allocations according to current interference conditions, allowing for both interference avoidance and high resource reusing rates. The dynamic nature of the system enables flexible adaptation to changing network conditions.
Solution Approach 2:
The patent changes the parameter of resource allocation from fixed to variable based on interference figures. The resource allocation server adjusts allocation decisions according to the interference figures received from femtocells, allowing the system to optimize resource usage dynamically. This parameter change enables the system to achieve both reliable interference avoidance and high resource reusing rates by adapting allocation strategies to actual interference conditions.
4Productivity
If conventional technologies use complex computations for resource allocation, then allocation decisions can be made, but the quality of service cannot be guaranteed and interference safety cannot be ensured
Solution Approach 1:
The resource allocation server acts as a mediator that receives interference figures from femtocells and performs comprehensive calculations to determine safe resource allocations. This intermediary approach centralizes the reliability-functioning, allowing for thorough analysis of interference conditions and guaranteed QoS through server-based computation rather than limited local computation at the femtocell level.
Data Source
AI summary
A network system, a femtocell, a femtocell management apparatus, a resource allocation method and a computer program product thereof are provided. The network system comprises a piece of user equipment, a femtocell and a femtocell management apparatus. The user equipment is configured to transmit a request. The femtocell communicates with the user equipment and is configured to receive the request and establish an interference figure. The femtocell management apparatus communicates with the femtocell and is configured to receive the request and the interference figure and perform resource allocation to allocate a resource block to the request signal according to the request and the interference figure so that the femtocell and the user equipment may perform signal transmission according to the resource block.