Recent Research Topics
- 5th generation cellular networks (5G)
- Millimeter-wave overlaid heterogeneous networks
- Millimeter-wave edge cloud with prefetching
- Millimeter-wave mesh networks
- Flexibly configuration millimeter-wave mesh networks
- Testbed construction based on SDN
- Wireless sensor networks and its applications
- Fingerprint-localization based automatic driving robots
- Battery-less sensors activated by wireless power transmission
We have proposed the new architecture of mmWave overlaid heterogeneous cellular networks, where mmWave small cell base stations are deployed the conventional macro cells. In this research, we further attempt to introduce a new concept, mmWave Edge Cloud, which combines the ultra-broadband mmWave communications and the multi-access edge computing (MEC).
To illustrate the feasibility of 5G mmWave Edge Cloud, we construct and implement a UE-centric edge content delivery system, in which the content server is re-located dynamically in adaptation to UE’s context information (e.g., location, mobility) via dynamic routing over mmWave meshed backhaul network, enabled by Software Defined Network (SDN) control.
5G communication network is expected to support enhanced mobile broadband (eMBB) services by millimeter-wave overlay heterogeneous network (HetNet). However, the backhaul links through cables (e.g., optical fibers) is extremely costly. To overcome it, we proposed mmWave mesh backhaul networks (MMBN).
The combination of Drones and advanced wireless technology results in many promising applications, among which the super-high-resolution video monitoring system using drone attracts our attention. We proposed monitoring system in which the drones transmites the super-high-resolution uncompressed video in real-time using 60GHz mmWave communication.
mmWave V2X communication is one of the most important enabler for automated driving. By sharing the real-time sensing information with neighbouring vehicles or roadside infrastructures via mmWave V2X, vehicles’ driving safety can be greatly improved. We analyze the indispensability of mmWave V2X for automated driving, and built a proof-of-concept testbed in practical driving environment.
We have proposed a wireless grid, in which battery-less sensor nodes can be activated by the multi-point wireless energy transmissions (WET) with carrier shift diversity, implemented the system in a practical office environment. We also built an automatic lighting system controlled by a battery-less controller, to illustrate the application of battery-less sensors in future smart buildings and IoT networks.