Device and method for designing an optimal wireless backhaul network by selecting construction locations for small cell base station clusters

Wireless backhaul design device for small cell placement based on communication failure probability

This technology is a wireless backhaul network design device and method that generates multiple hopping paths from a macro cell base station to small cell base station clusters located far away, selects the representative path with the shortest cumulative hopping distance, and determines the construction location for a new small cell cluster in sub-hopping segments where the communication failure probability exceeds a threshold.

Due to the low diffraction of the millimeter-wave band in 5G mobile communication, a large number of small cell base station clusters are required to cover dead zones, leading to significant increases in CAPEX and OPEX. There has been a limitation in systematically determining where to add small cells to efficiently improve backhaul reliability.

This technology selectively adds clusters only to hopping segments with high failure probabilities, reducing the communication failure rate between macro cells and small cell clusters with minimal base station expansion. It can be applied to 5G millimeter-wave network deployment and carrier investment planning, reducing both CAPEX and OPEX required to reach target quality levels.

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Key Features:

• An information storage unit that stores the location of the macro cell base station and the number and location information of base stations for each of the N small cell base station clusters
• A cluster selection unit that selects a first cluster with an end-to-end distance from the macro cell base station exceeding a threshold, and second clusters within a circular area having that distance as its diameter
• A path processing unit that generates multiple hopping paths using K hops through the second clusters and selects the path with the shortest cumulative hopping distance as the representative hopping path
• A construction location determination unit that determines the construction location of a small cell cluster in segments of the representative hopping path where the communication failure probability is equal to or greater than a preset probability

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This invention was developed with support from the Ministry of Education's research on energy hotspots based on 3D beamforming technology for wireless power transmission.

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