Method and system for securely transmitting messages

Abstract

In a method and system for securely transferring a message (N) from a transmitter unit (SE) to a receiver unit (EE), a message sent by a transmitter unit (SE) is thereby transmitted to a receiving antenna array (EAA) comprising a plurality of receiving nodes (EK). The receiving nodes (EK) of the receiving antenna array (EAA) each verify the received message as originating from an authorized transmitter unit (SE) before the verified message is forwarded by each receiving node (EK) to the receiving unit (EE). The method and system effectively protects the message transmission from the introduction of undesired data by an attacker, and by an attack wherein the lifespan or operating time of the partially battery-powered nodes is reduced by increased current consumption.

Description

technical field [0001] The invention relates to a method and a system for securely transmitting a message from a transmitting unit to a receiving unit, in particular a receiving unit receiving a message via a receiving antenna array. Background technique [0002] In the field of wireless communication, using MIMO (Multiple Input Multiple Output (Multiple Input Multiple Output)) means using multiple antennas or transmitting nodes for transmitting and using multiple antennas or receiving nodes for receiving data. These antennas or nodes each form an antenna array here. The antenna array on the transmitter side is called the transmit antenna array, and the antenna array on the receiver side is called the receiver antenna array. Such signal transmission is used in wireless communication systems in order to take advantage of multipath propagation and thus limit the effects of signal fading. Cooperative MIMO is spoken of when multiple independent entities (Instanzen) or nodes fo...

AI Technical Summary

Problems solved by technology

In addition, the attacker can unnecessarily load the intermediate nodes or receiving nodes and receiving units, such as increasing the computational cost on the receiving side

This undesired load on the receiver side may lead to undesired utilization of communication resources from the receiver side, for example to increased current consumption of participating nodes

Especially in the case of battery-operated nodes, such as receiving nodes of receiving antenna arrays, it is thus possible for an attacker to reduce the operating duration

Thus, in the case of conventional processing methods for transmitting data, an attacker can not only perform a Denial-of-Service-Angriff, but also cause the forwarding of his own data

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