Base Station Resource Calculation for LTE Call Admission
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Solution Overview
Problem
In LTE systems, it is challenging to accurately determine the number of mobile stations that actually consume radio resources, leading to difficulties in call admission control and efficient frequency band management, as the number of connected stations does not always align with the number of stations actively using resources.
Innovation Solution
A base station apparatus is equipped with calculation sections that assess the number of mobile stations actively using shared channels by analyzing data transmission, communication frequency, and resource consumption, allowing for precise identification of resource-consuming stations and informed call admission control and frequency band selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If call admission control is based on the number of connected mobile stations, then the control mechanism is simple to implement, but the accuracy of resource consumption assessment deteriorates because connected stations do not always align with actively using stations
Solution Approach 1:
The patent replaces the mechanical counting method (simply counting connected stations) with a signal-based detection method. The base station detects the presence of data in transmission buffers and monitors communication activity to determine the number of actively resource-consuming stations, substituting direct measurement for indirect estimation.
Solution Approach 2:
The patent introduces an intermediary detection mechanism that observes the relationship between connected stations and actual resource usage. By monitoring transmission buffers and communication activity as an intermediary layer, the system bridges the gap between connection status and actual resource consumption, enabling more accurate assessment without directly measuring each station's resource usage in real-time.
2Productivity
If the number of mobile stations is increased to maximize communication capacity, then the overall network throughput is improved, but the efficiency of resource utilization deteriorates due to idle stations consuming allocated resources
Solution Approach 1:
The patent implements dynamic resource allocation based on real-time detection of active stations. Instead of static allocation based on connection count, the system continuously monitors transmission buffers and communication activity, adjusting resource allocation dynamically to match actual demand, thereby preventing waste from idle stations while maintaining capacity for active ones.
Solution Approach 2:
The patent changes the parameter used for resource allocation from a static parameter (number of connected stations) to a dynamic parameter (number of stations with data in transmission buffer or active communication). This parameter change enables the system to adapt resource allocation to actual usage patterns, improving efficiency without sacrificing capacity.
3Ease of operation
If frequency band allocation is based on equal distribution among carriers, then resource distribution is uniform and simple to manage, but optimization of frequency usage efficiency deteriorates when station distribution across carriers is uneven
Solution Approach 1:
The patent applies local quality by allowing different frequency band allocation strategies for different carriers based on their specific conditions. Instead of uniform distribution, the system detects the number of active stations on each carrier individually and allocates frequency resources accordingly, enabling each carrier to have optimized resource distribution tailored to its actual usage pattern.
Solution Approach 2:
The patent introduces dynamic frequency band allocation that adapts to changing conditions on each carrier. By continuously detecting active station counts per carrier and adjusting frequency resource allocation in real-time, the system transforms static equal distribution into dynamic optimized allocation, improving frequency usage efficiency while maintaining manageable complexity.
Data Source
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AI summary
The base station apparatus calculates the number of the mobile stations associated with a consumption amount of radio resources, and carries out call admission control in accordance with the number of the mobile station. The base station apparatus includes a calculation section that calculates the number of the mobile stations having data to be transmitted in a transmission buffer, and a call admission section that carries out new call admission in accordance with the number of the mobile stations.