Abstract: A technology is described for applying authentication on a constrained bandwidth link. The method may determine an amortization factor for authentication to be applied to data blocks sent across the constrained bandwidth link. The amortization factor may be pre-set or received from a user during a communication session. Another operation may be generating truncated authentication codes that are keyed cryptographic checksums for the data blocks. A truncation size of the truncated authentication codes may be defined in part by the amortization factor. The data blocks may be sent across the constrained bandwidth link with the truncated authentication codes to the receiving node.

Abstract: A technology is described for applying security to a message to be sent over a constrained bandwidth link. The method may include identifying a priority portion of the message, using machine learning, that is to be sent with increased security as compared with a remainder of the message. A level of security to be applied to the priority portion of the message may be determined. A security protocol may be applied to the priority portion of the message, as defined in part by the level of security. The data packets may be sent for the message across the constrained bandwidth link to a receiving node.

Abstract: Embodiments of a radio-frequency (RF) repeater configured for semantic-less retransmissions are described herein. The RF repeater performs physical (PHY) layer processing to identify one or more PHY layer features of a received RF signal. The RF repeater may determine whether or not to retransmit the received RF signal based on the one or more PHY features. The determination to retransmit the received RF signal may be based solely on PHY parameters enabling semantic-less retransmissions.

Abstract: A converged radio unit (RU) configured for semantic-less retransmissions comprises a radio-frequency machine learning (RFML) radio unit (RFML RU) and a radio-access network (RAN) radio unit (RU). The RFML RU may be configured to receive an RF signal comprising a packet, decode a PHY layer preamble of the packet, and apply a machine-learning (ML) model to information obtained from only the PHY layer preamble to classify the packet. When the packet is classified be a tactical data link (TDL) packet based on the information obtained only from the PHY layer preamble, the RFML RU may retransmit the packet. When the packet is classified a RAN protocol packet, the RFML RU may be configured to signal the RAN RU to process the RAN protocol packet in accordance with a RAN protocol.

Abstract: Embodiments of a radio-frequency (RF) repeater configured for semantic-less retransmissions are described herein. The RF repeater performs physical (PHY) layer processing to identify one or more PHY layer features of a received RF signal. The RF repeater may determine whether or not to retransmit the received RF signal based on the one or more PHY features. The determination to retransmit the received RF signal may be based solely on PHY parameters enabling semantic-less retransmissions.