Dynamic Frequency Band Allocation Between LTE and 3G Networks
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Solution Overview
Problem
Current mobile communication systems face inefficiencies in frequency band utilization due to varying traffic patterns between Packet Switched (PS) and Circuit Switched (CS) traffic, leading to underutilization of frequency bands in certain networks during peak times.
Innovation Solution
A control method and management apparatus that dynamically allocate frequency bands between different Radio Access Technologies (RATs), such as LTE and 3G networks, based on usage states, allowing for reallocation of unused frequency bands from low-traffic networks to high-traffic networks, thereby optimizing resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequency bands are statically allocated to different RATs (LTE and 3G networks), then network stability and simplicity are maintained, but frequency utilization efficiency deteriorates due to traffic variations
Solution Approach 1:
The patent implements dynamic frequency band allocation where the usage state of frequency bands is continuously monitored and allocation decisions are adjusted in real-time based on traffic conditions. This allows the system to transition from static to dynamic allocation, improving frequency utilization efficiency while maintaining network stability through controlled adaptation.
Solution Approach 2:
The patent employs feedback mechanisms where usage state information from frequency bands is collected and used to generate allocation request signals. This closed-loop feedback system enables the network to respond to changing traffic conditions by reallocating frequency bands dynamically, resolving the contradiction between stability and efficiency.
2Loss of energy
If frequency bands are dynamically reallocated between RATs based on usage state, then frequency utilization efficiency is improved, but system complexity increases
Solution Approach 1:
The patent introduces management apparatus as an intermediary layer between the frequency band resources and the RATs. This intermediary monitors usage states, makes allocation decisions, and coordinates reallocation between networks, thereby managing the complexity of dynamic allocation while achieving improved frequency utilization efficiency.
Solution Approach 2:
The patent separates the frequency band management function into distinct management apparatus for each RAT, allowing independent monitoring and control of frequency band usage states. This segmentation simplifies the overall system complexity by dividing the management task into manageable, modular components.
3Productivity
If frequency bands are reallocated from low-traffic to high-traffic networks, then resource utilization is optimized, but interference management becomes more challenging
Solution Approach 1:
The patent uses feedback from usage state monitoring to detect when frequency band reallocation is needed and to track the effects of reallocation. This feedback mechanism allows the system to optimize resource utilization while managing interference by adjusting allocations based on actual network conditions and interference levels.
Data Source
AI summary
A control method comprises: transmitting, by a first management apparatus included in a first network allocated with a first frequency band, to a second network allocated with a second frequency band, an allocation request signal for requesting allocation of a part of the second frequency band to the first network, the signal being generated on the basis of a usage state of the first frequency band, determining, by a second management apparatus included in the second network, on the basis of a usage state of the second frequency band, a bandwidth to be allocated to the first network out of the second frequency band and an allocated frequency band corresponding to the bandwidth; managing the allocated frequency band as unavailable; transmitting, an allocation request response signal including information indicating the allocated frequency band, to the first network; and managing the allocated frequency band as available in the first network.