Concentrator-Based Cell Selection for Load Distribution
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Solution Overview
Problem
Current communication systems face challenges in reducing network delay and data loss as traffic volume increases, particularly due to the inability to effectively distribute load across cells, especially in LTE systems where user devices select cells based on congestion levels without considering uplink congestion.
Innovation Solution
A communication system that selects the cell for a communication terminal device based on the flow of received and transmitted data, using a concentrator to disperse traffic load across multiple cells, thereby preventing concentration in specific cells and reducing network delay and data loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If user devices select cells based on congestion levels, then downlink congestion is reduced, but uplink congestion is not considered leading to load concentration in specific cells
Solution Approach 1:
The system implements feedback mechanisms where base stations report both downlink and uplink congestion levels to the server. The server uses this feedback information to make informed cell selection decisions, dynamically adjusting the selection criteria based on real-time network conditions to balance both downlink and uplink loads.
Solution Approach 2:
The cell selection mechanism is enhanced to consider multiple factors including both downlink and uplink congestion levels, signal strength, and network load. This multi-functional approach allows the system to adapt to various network conditions and make optimal cell selection decisions that prevent load concentration in specific cells.
2Productivity
If traffic load is concentrated in specific cells, then network simplicity is maintained, but network delay and data loss increase
Solution Approach 1:
The system segments the network into multiple cells with distinct load characteristics and uses server-based coordination to distribute traffic strategically. By dividing the network into manageable segments and monitoring their individual load states, the system can redirect traffic to less congested cells, reducing overall network delay and preventing data loss.
Solution Approach 2:
A server acts as an intermediary between user devices and base stations, coordinating cell selection decisions. The server receives congestion information from base stations and makes informed decisions about traffic routing, mediating between the need for network simplicity and the requirement to distribute load to reduce delay.
3Ease of operation
If cell selection is simplified, then device complexity is reduced, but load distribution effectiveness decreases
Solution Approach 1:
The system enables base stations to self-report their congestion levels and operational status to the server. This self-service mechanism allows the network to automatically adjust cell selection without requiring complex manual configuration, maintaining ease of operation while achieving effective load distribution through automated server-based coordination.
Data Source
AI summary
A communication system includes a user equipment (UE), and a plurality of cells that perform communication with the UE. The plurality of cells include a macro cell having a relatively-wide-range coverage, and a plurality of small cells having a relatively-narrow-range coverage. The plurality of small cells are connected to a concentrator. The concentrator selects the small cell to which the UE is to be connected, from among a plurality of small cells, based on the flow of at least either one of the received data that each small cell receives from the UE and the transmission data that each small cell transmits to an MME and an S-GW.