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Simulation of Attacks on UAV Swarm with Repeater

Submitted:

16 September 2025

Posted:

19 September 2025

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Abstract
Study is devoted to the problem of interference protection for communication channels of Unmanned Aerial Vehicle (UAV) swarm during attacks, which is relevant due to the growth of threats in military and civilian applications (intelligence, monitoring, and logistics). The use of a repeater expands the range and coordination of the swarm, but increases vulnerability to attacks such as directional interference. A model was developed using NetCracker and includes Base Station, Repeater, Aerial Base Station, UAV swarm, and Attacker that simulates Denial-of-Service (DoS) attacks. The model allows analyzing the impact of interference on communication, taking into account Bit Error Rate (BER), delay, and throughput. The simulation results showed that at Time-Between-Transaction (TBT) of 0.01 s and Transaction Size (TS) of 100,000 bits, packet losses reach 30%. The novelty lies in the integration of networks with a repeater and real-time attack simulation, which fills the gaps in existing research.
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I. Problem Statement

The development and application of UAV swarms are actively developing in military and civilian areas, including reconnaissance, monitoring, agriculture and logistics. Using a repeater extends the communication range and improves swarm coordination, but at the same time increases the system's vulnerability to attacks. The relevance of this study is due to the growth of threats, an increase in the number of attacks on UAVs in military conflicts, the emergence of new methods of suppressing communications, such as directional interference.
UAV swarms require stable communication channels for self-organization and adaptation to losses. The loss of a repeater can lead to complete disorganization of the swarm. Modern communication systems are vulnerable to interference, which reduces the effectiveness of the swarm. Modeling attacks allows to predict the behavior of the swarm in counteraction, optimize control algorithms and increase interference immunity, which is critical to ensuring safety and efficiency.
Existing publications confirm the need for an integrated approach to attack modeling. The main gap is the lack of research on attacks on communication channels with repeaters and their impact on the interference immunity of the swarm.To enable emergency remote control and condition monitoring, reliable communications with both long- and short-range UAVs is required.
The aim of this study is to develop a simulation model for analyzing attacks on UAV swarm with a repeater and assessing the impact of attacks. For this purpose, a model of the UAV swarm communication channel was created to simulate Denial of Service (DoS) attacks.

III. Communication Channel Model

The model shown in Figure 1 was developed with the help of NetCracker software environment to simulate attacks on UAV swarm with Repeater. The model includes the following key components: Base Station transmitting Tactical Data and Common Data; intermediate node Repeater, which provides communication between Base Station and Aerial Base Station. The latter provides communication with UAV swarm.
UAV swarm consists of five UAVs, each of which exchanges data packets with the Base Station. Attacker generates interference that affects the communication between Aerial Base Station, Repeater and UAV swarm. This simulates real electronic warfare scenarios, such as signal jamming. Model parameters are given in Table 1. Repeater is located at a distance of 30 km from Base Station, Aerial Base Station is 10 km from Repeater and UAVs in swarm each on the distance 10 km from Aerial Base Station.
The model is motivated by the need to study the resilience of UAV swarms to attacks in real conditions, where communication is critical for coordination and data transmission. The use of a repeater allows modeling extended communication networks, typical for UAV swarms performing joint missions, such as reconnaissance or monitoring. The inclusion of an attack element reflects real threats, such as electronic warfare, actively used in modern conflicts (for example, the use of DroneDefender-type rifles to create jamming). The model takes into account various communication parameters (BER, delays, throughput), which allows assessing the impact of attacks on network efficiency.
Model parameters such as channel bandwidth and low BER reflect modern UAV communication standards (e.g. LTE/5G), while latencies meet the requirements of real-time data transmission. The use of Repeater adds realism, as such platforms are increasingly used to provide long-range communications.
The originality of the model is that the integration of UAV swarm with Repeater in the proposed model uniquely combines a swarm with an intermediate repeater, which allows us to study mesh networks in the context of attacks. Most studies focus on direct UAV-Ground or UAV-Satellite communication, while mesh networks with repeaters remain less studied.
Simulating real-time attacks is accomplished by including an attacker to simulate the swarm and is also a novel approach since many UAV communication models do not take into account the impact of interference on swarm communication.
The novelty of the model lies in its integrated approach to attack, as previous studies focused on individual aspects such as communication or recognition without taking attacks into account.

IV. Attack Simulation

The relevance of our study is related to the increasing number of cyber attacks and electronic attacks on UAVs. For example, interception of drone control in military conflicts, the emergence of new methods of suppressing communications, such as directional interference.
The complexity of control leads to the fact that UAV swarms require stable algorithms for self-organization and adaptation to losses. The loss of a repeater can lead to complete disorganization of the swarm. Insufficient noise immunity of modern communication systems reduces the effectiveness of the swarm in counteraction conditions. It is necessary to develop stable communication protocols and control algorithms.
Modeling attacks allows us to predict the behavior of the swarm in counteraction conditions, optimize control algorithms and increase noise immunity, which is critical for ensuring safety and efficiency.
For the model presented in Figure 1, simulating an attack on UAV Swarm via Aerial Base Station, the choice of the attacker and its characteristics is key to realistic simulation of electronic warfare. To integrate with the model, the Attacker should be connected to the model as a separate node generating interference on the Repeater-UAV Swarm link, with the ability to simulate targeted attacks. Simulating scenarios and testing the attacker with different Time-Between-Transactions (TBT) will allow us to assess the limits of the system's resilience. We will simulate DoS attack aimed at overloading a network or web server in order to make it unavailable to users. "ATTACKER-PC" is one of the tools used in DoS or Distributed Denial of Service (DDoS) attacks to overload the target resource and disable it. The difference between DoS and DDoS attacks is that DoS attacks are carried out on the basis of a single computer, DDoS attacks use two or more hostings. It is more difficult to detect a multi-threaded DDoS attack, since the traffic initially looks organic and does not raise questions from the administrator. DDoS, unlike DoS, allows a hacker to direct significant amounts of traffic to their target.
"ATTACKER-PC" means "attacker's PC" or "intruder's PC". This term can be used in the context of information security to refer to a computer that is used to carry out attacks on other systems.
We will simulate DoS attack aimed at overloading a network or web server in order to make it unavailable to users. DoS attack is a targeted set of actions in which an attacker attacks a computer system or network using a large number of messages to send false traffic and overload the resource. Signs of DoS attack are an increase in the network load and the volume of traffic on connection ports. At the same time, the load on the processor and memory increases sharply, the number of requests to databases or other internal services increases. An attack is considered successful if it achieves the attacker’s goals without completely jamming the network. Quantitative measures of success depend on the context (e.g., application type or system criticality). Packet loss ≥ 1–5% is a success for attacks targeting sensitive applications (streaming video). Even 1–5% loss is enough to cause noticeable lags or interruptions. In the context of UAV control, an attack is considered successful if it achieves packet loss ≥ 2–5%, which is enough to disrupt swarm coordination or delay command transmission.

V. Simulation Results

The model allows to see how packets pass through Repeater and Aerial Base Station. The choice of traffic protocol depends on the nature of data transmission, network architecture, and the role of the attacking node. For regular traffic (without an attack), we select the InterLAN protocol because InterLAN traffic models transmission through several network nodes and interfaces, including those with separate subnets and routing. In our model, the base station and drones are in different subnets, and there is also a relay and air routes. For an attack from ATACKER, we select the LAN Peer-to-Peer protocol because LAN Peer-to-Peer traffic is used for direct attacks at the channel level, local overloads in one Wi-Fi zone or subnet. This protocol is preferable if ATACKER is connected to the same Wi-Fi segment as drones, operates at the Ethernet frame level, or sends a flood to the local segment.
Data transmission of drones in accordance with the ICAO requirements (ICAO Circular, 2011) is carried out in the form of C3 (Command, Control and Communication) traffic (Figure 1), which consists of the Tactical Control Data (TCD) channel for flight control and the Common Data (CD) channel (for transmitting data from users of cellular networks, information from radars, optical, infrared systems, etc).
Traffic with FTP client profile (File Transfer Protocol) for the Tactical Control Data (TS = 100 Kbit and TBT = 1 s with Const distribution law) and interLAN profile (Local Area Network) for the Common Data (TS and TBT with Const distribution law, TBT = 1 s) was set for our models. Command, control and communication traffic is carried out as two-way communication.
Quantitatively packets loss is estimated as the percentage of packets lost in relation to sent packets. Figure 2 demonstrates the dependences of dropped packets number on the TS parameter for ATTACKER traffic.
Figure 2 shows the packet loss rate at Aerial Base Station as a function of transaction size for three different attacker inter-packet intervals. Aerial Base Station communicates with the UAV swarm via a repeater, and the attacker jams.
TBT = 1 s (squares): Packet loss increases from 10 to about 20% as the transaction size increases from 1 bit to 100,000 bits. The increase is gradual, indicating less attack pressure when the attacker inter-packet intervals are rare.
TBT = 0.1 s (triangles): Losses increase faster, from 15 to 25% over the same transaction size range. This indicates more attack pressure at more frequent intervals.
TBT = 0.01 s (circles): Losses show the fastest increase, from 10 to almost 30% for a transaction size of 100,000 bits. The highest loss is observed at the shortest attacker inter-packet intervals.
The analysis allows us to draw the following conclusions.
Impact of transaction size: Increasing the transaction size leads to an increase in packet loss for all TBT values. This is explained by the fact that larger packets take up more channel resources, making them more vulnerable to interference from an attacking element.
Impact of interpacket time: Decreasing TBT (from 1 s to 0.01 s) significantly increases the level of losses. At TBT = 0.01 s, the attack becomes most intense, leading to channel congestion and loss of up to 30% of packets for large transaction sizes. This indicates a cumulative effect of interference at a high attack frequency.
Vulnerability threshold: For small transaction sizes (1-100 bits), losses remain relatively low (10-15%), regardless of TBT. A significant increase begins at sizes greater than 1000 bits, indicating a critical threshold after which the channel becomes vulnerable to attacks.
Consequences for UAV swarm communication: High packet loss (up to 30% at TBT = 0.01 s) can lead to disruption of swarm coordination, data transmission delays (delays in the model are 0.0–1.2 s) and reduced mission efficiency (e.g. reconnaissance or monitoring). This is especially critical for real time.
Power consumption: Increased losses require retransmissions, which increases the power consumption of UAVs with limited resources, which can reduce battery life.
System reliability: At TBT = 0.01 s and large packet sizes (100,000 bits), the delivery reliability drops to 70%, making the system vulnerable to electronic warfare. This can lead to loss of communication with the ABS or repeater.
Strategic recommendations: Adaptive algorithms should be developed to dynamically adjust the packet size and transmission power. Reducing the transaction size to 1000 bits can reduce losses to 15–20%, even under intense attacks.

VI. Conclusions

This study focuses on addressing the critical issue of interference protection for communication channels in a swarm of UAVs during hostile attacks, a topic of increasing relevance due to the rising threats in both military and civilian domains, such as intelligence gathering, environmental monitoring, and logistics operations. The incorporation of a repeater in the system significantly enhances the operational range and coordination capabilities of the UAV swarm, enabling more effective communication across greater distances. The simulation outcomes revealed that under specific conditions—namely, TBT = 0.01 seconds and a transaction size of 100,000 bits—packet losses escalate to 30%. Such a high packet loss critically impairs the swarm’s coordination, leading to operational inefficiencies and a notable increase in energy consumption as the UAVs attempt to compensate for the disruptions. The primary novelty of this research lies in its integration of a repeater within the network architecture and the real-time simulation of attacks, an approach that addresses significant gaps in prior studies by providing a more realistic assessment of swarm behavior under adversarial conditions.
Looking ahead, the findings of this study open several avenues for future research and development. One promising direction is the exploration of advanced interference mitigation techniques, such as adaptive frequency hopping or machine learning-based predictive algorithms, which could dynamically adjust communication protocols in response to detected threats. Additionally, further investigations could focus on optimizing the placement and configuration of repeaters to minimize vulnerabilities while maximizing coverage and reliability. The scalability of the proposed model also warrants examination—future studies could simulate larger swarms with varying numbers of UAVs and repeaters to understand how system performance scales under different attack scenarios. Another critical area of exploration is the energy efficiency of UAV swarms under attack conditions; developing energy-aware routing protocols could help mitigate the increased power consumption observed in this study. Moreover, integrating multi-layered security mechanisms, such as encryption and authentication protocols, could enhance the resilience of communication channels against sophisticated attacks beyond DoS, such as spoofing or jamming. Finally, real-world testing of the simulated model in controlled environments could validate the findings and provide practical insights into the deployment of interference-resistant UAV swarms.

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Figure 1. “Base Station – Repeater – Aerial Base Station – UAV Swarm” model.
Figure 1. “Base Station – Repeater – Aerial Base Station – UAV Swarm” model.
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Figure 2. Dependences of dropped packets number on the TS parameter for ATTACKER traffic with different TBT.
Figure 2. Dependences of dropped packets number on the TS parameter for ATTACKER traffic with different TBT.
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Table 1. “Base Station – Repeater – Aerial Base Station – UAV Swarm” model parameters.
Table 1. “Base Station – Repeater – Aerial Base Station – UAV Swarm” model parameters.
Parameters → Bandwidth
(Mbps)
Length
(m)
BER
(%)
Model elements ↓
Base Station
Tactical Control Data Workgroup 10 - -
Common Data Server 10 - -
TCD – Switch link 10 1 0
CD – Switch link 10 1 0
Switch 10 - -
Switch – Antenna link 44.736 10 0
Antenna 10 - -
Base Station – Repeater 2.048 - 44.736 305 0 – 0.05
Repeater Packet Latency – 0 s, Packet Fail Chance - 0
RELAY - Aerial Base Station 10 105 0
Aerial Base Station
Antenna 1000 - -
Antenna – Server link 44.736 10 0
Server 1000 - -
Aerial Base Station – UAV in Swarm 10 105 0
UAV in Swarm
Antenna 1000 - -
Antenna – Switch link 44.736 10 0
Switch 10 - -
Switch – Server link 10 1 0
Server 10 - -
ATACKER 10 105 0
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