Determination of Subscribers Coordinates using
Flying Network for Emergencies
Truong Duy Dinh*, Vladimir Vishnevsky**, Van Dai Pham*, Duc Tran Le***, Ruslan Kirichek*,**,
Andrey Koucheryavy**Department of Software Engineering and Computer Science, Bonch-Bruevich Saint-Petersburg State Universityof Telecommunications, 22 Prospekt Bolshevikov, St. Petersburg, Russia.
**V. A. Trapeznikov Institute of Control Sciences of Russian Academy of Sciences, 65 Profsoyuznaya Street,Moscow, Russia***Information Technology Faculty, The University of Danang - University of Science and Technology, 54
Nguyen Luong Bang, Danang, Vietnam.
duydt.sut@gmail.com, vishn@inbox.ru, fam.vd@spbgut.ru, letranduc@dut.udn.vn,
kirichek@sut.ru, akouch@mail.ru

Abstract— In the last decade, unmanned aerial systems have emerged in different fields, such as entertainment, military, Internetof Things, emergencies. In these systems, unmanned aerial vehicles (UAVs) communicate with each other based on a flying network
to provide services to customers such as live streaming, high-speed access point, etc. The mobility of UAVs can bring numerous
advantages in emergency cases, for example, rescuing and searching victims in areas where the network infrastructure is notavailable. However, the crucial task needed to be done first is to locate the victims’ coordinates. In this paper, we propose a methodfor detecting the coordinates of subscribers with the Wi-Fi signals generated from victims’ phones in the absence of network
infrastructure of communication operators using a flying network for emergencies based on UAV-swarms. We develop a newprotocol for communication between UAVs and UAV-swarms. A structure of UAV-swarms is considered to optimize the searchingtime. The results of the proposed method are achieved by simulation.
Keyword— SAR, UAV, Flying Network, positioning, Wi-Fi, IEEE 802.11p
Truong Duy Dinh received his BS and MS degree from the Bonch-Bruevich Saint-Petersburg State University of Telecommunications inRussia, in 2014 and 2016, respectively. He is currently a Ph.D. student in the Department of Communication Networks and Data
Transmission at the Bonch-Bruevich Saint-Petersburg State University of Telecommunications, Russia. His research interests include
Internet of Things, Smart Cities, wireless sensor networks, flying networks.

Dr. Sc. Vladimir Vishnevsky received an Engineering degree in applied mathematics from the Moscow Institute of Electronics andMathematics, Russia, in 1971, the Ph.D. degree in queuing theory and telecommunication networks and the D.Sc. degree intelecommunication networks from the V. A. Trapeznikov Institute of Control Sciences of Russian Academy of Sciences (ICS RAS), in1974 and 1988, respectively. He became a Full Professor with ICS RAS in 1989 and the Moscow Institute of Physics and Technology in1990. He was an Assistant Head of the Institute of Information Transmission Problems of RAS from 1990 to 2010 and an Assistant Headof a laboratory with ICS RAS from 1971 to 1990. He is currently the Head of Telecommunication Networks Laboratory, ICS RAS. He isa member of Expert Councils of Russian High Certifying Commission and Russian Foundation for Basic Research, member of IEEE
Communication Society, International Telecommunications Academy, and New York Academy of Science. He has authored over 300 papers in queuingtheory and telecommunications. He is a Co-Chair of IEEE conferences - ICUMT, RTUWO, and the General Chair of the DCCN conference. His researchinterests lie in the areas of computer systems and networks, queuing systems, telecommunications, discrete mathematics (extremal graph theory, mathematicalprogramming), and wireless information transmission networks.
Van Dai Pham received his BS and MS degree in infocommunication technologies and communication systems from the Bonch-Bruevich
Saint Petersburg State University of Telecommunications in Russia, in 2017 and 2019, respectively. He is currently a Ph.D. student in theDepartment of Software Engineering and Computer Science at the Bonch-Bruevich Saint-Petersburg State University ofTelecommunications, Russia. Since 2016, he has published papers related to IoT and its applications in international journals andconferences. His research interests include IoT, FANET, Smart Cities, LoRa network, Wireless Sensor Networks.

Dr. Duc Tran Le acquired his degree of Ph.D. at Admiral Makarov State University of Maritime and Inland Shipping, Russia in 2018. Heworks in Information Technology Faculty, The University of Danang - University of Science and Technology, Danang, Vietnam from 2019.
His research areas include Internet of Things, wireless network, network security, QoS, WLAN, Software-defined networking.

Dr. Sc. Ruslan Kirichek working in the Bonch-Bruevich Saint-Petersburg State University of Telecommunications as Professor inDepartment “Communication Networks and Data Transmission”. He was born in 1982 in Tartu (Estonia). He graduated Military-SpaceAcademy A.F. Mozhaiskogo and the Bonch-Bruevich Saint-Petersburg State University of Telecommunications in 2004 and 2007
respectively. R. Kirichek received Ph.D. at the Bonch-Bruevich Saint-Petersburg State University of Telecommunications in 2012 and Dr.
Sc. at the Povolzhskiy State University of Telecommunications and Informatics in 2018. From 2008 to 2013 worked as a senior researcher atthe Federal State Unitary Enterprise "Center-Inform". Since 2012, he has been working as the Head of the Internet of Things Laboratory at theBonch-Bruevich Saint-Petersburg State University of Telecommunications (iotlab.ru). Since 2017, he has been a ITU-T Q12/11 Rapporteur“Testing of Internet of things, its applications and identification systems” and an expert in international standardization at the National standardization body“Rosstandart”. He is a General Chair of the International Conference “Internet of Things and It’s Enablers” (inthiten.org). Since 2020 he has been the Head ofdepartment “Software Engineering and Computer Technology” at the Bonch-Bruevich Saint-Petersburg State University of Telecommunication.
Dr. Sc. Andrey Koucheryavy was born in Leningrad 02.02.1952. After graduated from Leningrad University of Telecommunication in1974 he worked at Telecommunication Research Institute named LONIIS, where A. Koucheryavy working up to October 2003 (from 1986up to 2003 as the First Deputy Director). He became the Ph.D. and Dr.Sc. in 1982 and 1994 respectively. A. Koucheryavy has been professor
in the Bonch-Bruevich Saint-Petersburg State University of Telecommunications since 1998. He has been the Head of department“Communication Networks and Data Transmission” since 2011. He is honorary member of A.S.Popov’s society. Prof. A. Koucheryavy wasthe Chairman Study Group 11 ITU-T (Study periods 2017-2020). His scientific areas of interest are the network planning, teletraffic theory,
IoT and its enablers.