A "3D communication network" refers to network architecture that creates a three-dimensional communications infrastructure, extending beyond the ground to include vertical layers such as the stratosphere and outer space. Conventional communications networks have primarily relied on a two-dimensional structure centered on terrestrial base stations and optical fiber. By contrast, a multilayered configuration that covers both land surfaces and varying altitude levels expands the sphere of communications.

In a 3D communication network, terrestrial networks (TN) are integrated with non-terrestrial network (NTN) platforms such as High Altitude Platform Stations (HAPS), which operate in the stratosphere, as well as satellite communications. This integration between TN and NTN enables reliable connectivity in mountainous regions, across oceans and in the sky to support communications for drones, flying vehicles and other airborne vehicles that ground-based communication infrastructure cannot reach. In addition to enhancing the reliability of communication services, 3D communication networks are expected to serve as critical infrastructure for a wide range of fields, including autonomous driving, disaster response and the advancement of the Artificial Intelligence of Things (AIoT).

Furthermore, 3D communication networks are also viewed as one of the core technologies for the coming 6G era, with the potential to deliver low-latency and wide-area connectivity. SoftBank Corp. (TOKYO: 9434) views 3D communication networks not only as a means of expanding coverage, but also as a potential solution to various social challenges. Accordingly, SoftBank is advancing the practical implementation of 3D communication networks and other next-generation communications to ensure there is reliable connectivity in any situation.

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(Posted on February 17, 2026)
by SoftBank News Editors