Introduction to Cradio technologies, including the latest features and use cases.
As core technologies for the future, we will present:
(1) wireless environment visualization and analysis technology through interaction with a local LLM, and
(2) multi-radio coordination technology for maximizing wireless performance.
To ensure wireless access is used sustainably and related services can expand, globally harmonized regulatory frameworks for radio spectrum need to be established and relevant technologies standardized. At AS Labs., we are taking a leading role in international standardization efforts through organizations such as IEEE 802.11 and ITU-R and are committed to initiatives aimed at making next-generation wireless access more accessible. We are also pushing for domestic laws and regulations concerning spectrum use in Japan to be revised and enacted. This exhibit will introduce our international standardization and domestic regulatory activities to maintain and expand available radio spectrum, as well as to extend Cradio®'s multi-radio interface capabilities.
We will showcase the results of operational verification using actual equipment conducted as part of efforts toward the society-wide deployment of distributed MIMO technology. We will also introduce ongoing initiatives toward commercialization, including the development of distributed MIMO implementations for vRAN equipment that realizes base station functions as virtualization software running on general-purpose servers.
DAS (Distributed Antenna System) is used to deploy indoor mobile coverage for high-frequency bands such as 5G Sub-6 and millimeter wave, which have limited indoor penetration. A DAS consists of a master unit and multiple slave units, where signals from a base station are replicated at the master unit and radiated from each slave unit. To enable large-scale deployment of slave units, system simplification is required. We investigate further simplification using Analog Radio over Fiber (A-RoF) and a technique to detect terminal presence at each slave unit, which is essential for A-RoF DAS. This exhibit will demonstrate communication between a commercial base station and terminals via the proposed A-RoF DAS.
NTT and JAXA are currently conducting demonstration experiments on low-earth orbit satellite MIMO technology and satellite IoT technology through the experimental satellite project RAISE-4 (RApid Innovative payload demonstration SatellitE-4). As well as providing an overview of the technology and demonstration experiments, this exhibition will introduce the latest information on the capacity enhancement effect of low-earth orbit satellite feeder links obtained through the demonstration experiments.
Blockchain-based wireless access sharing enables wireless access resources owned by many individuals to be securely shared by establishing wireless communication contracts via a blockchain each time a user connects.
In addition, by controlling the optimal connection destination on the basis information recorded on the blockchain ledger, it improves the overall communication quality of wireless access.
Through this approach, we aim to reduce wasteful wireless infrastructure investment across society.
Although high-frequency band wireless communications can be expected to offer large capacity, they are susceptible to communication interruptions due to distance attenuation and shielding. Therefore, we have been working on a terminal-driven dynamic site diversity control technology in which terminals are equipped with multiple antennas to avoid communication interruptions. At this exhibition, we will showcase a prototype device that has an increased number of antennas to enhance its practicality and demonstrate its effectiveness.
We will introduce an energy harvesting technology that enables many IoT devices to be deployed and operated. In this exhibit, we will demonstrate a wireless power-supply controller that efficiently converts communication radio waves transmitted from a Wi-Fi access point into electric power. The power-supply controller makes it possible to realize a battery-less IoT service using multiple devices.