Hub Apparatus for Heterogeneous Network Load Offloading
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Solution Overview
Problem
In heterogeneous networks, efficiently distributing traffic load between macro cells and small cells is challenging, especially in environments with dynamic traffic changes, as existing systems require high investment costs and struggle to offload traffic between independently connected digital signal processing apparatuses for macro and small cells.
Innovation Solution
A hub apparatus with an offloading controller and path change unit that dynamically determines and adjusts the digital signal processing load distribution between macro and small cells by changing coverage and antenna output, allowing for efficient resource sharing and traffic path changes without modifying the network infrastructure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If macro cell and small cell are independently connected to separate digital signal processing apparatuses, then each digital signal processing apparatus can process traffic of its connected cell, but it becomes difficult to perform offloading between macro cell and small cell
Solution Approach 1:
A hub apparatus is introduced as an intermediary component between the macro cell digital signal processing apparatus and small cell digital signal processing apparatus. The hub apparatus establishes a backhaul connection that enables traffic offloading by routing traffic between the separately connected digital signal processing apparatuses, thus maintaining independent connections while enabling collaborative offloading functionality.
2Reliability
If each digital signal processing apparatus is designed based on maximum traffic, then sufficient processing capacity is ensured, but high investment cost is required
Solution Approach 1:
The system enables dynamic traffic offloading where the hub apparatus can redirect traffic between macro cell and small cell digital signal processing apparatuses based on real-time load conditions. This dynamic capability allows each digital signal processing apparatus to be designed with lower peak capacity requirements, as they can share the maximum traffic load through offloading, thereby reducing overall investment cost while maintaining sufficient processing capacity.
3Adaptability or versatility
If small cell is formed with third party equipment, then small cell can be deployed, but it cannot have interface connected to macro cell for load distribution
Solution Approach 1:
The hub apparatus serves as a mediator that enables third-party small cell equipment to connect to the macro cell network for load distribution purposes. By providing a backhaul connection through the hub, third-party small cell equipment can participate in traffic offloading without requiring direct interface connectivity to the macro cell digital signal processing apparatus, thus maintaining deployment flexibility while enabling load distribution.
Data Source
AI summary
A hub apparatus may be provided for distributing a load of a small cell digital unit to a macro cell digital unit in a heterogeneous network. The hub apparatus includes an offloading controller configured to determine a first small cell, as an offloading target among a plurality of small cells based on a load of the macro cell digital unit and the small cell digital unit, to determine a first digital unit processing a load of the first small cell among at least one macro cell digital unit, to that generate a first control signal that requests connection to the first digital unit and a low-power radio unit of the first small cell, a path change unit connected to each of an antenna, having one side installed in the macro cell and a low-power radio unit installed in each small cell, having the other side connected to each of the macro cell digital unit and the small cell digital unit, configured to form a path connecting the one side and the other side, and configured to change a digital unit connected to a corresponding low-power radio unit based on the first control signal.