# US 11,310,667 B2 · Communication by a network node in a data network > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,310,667 B2 - Document ID: US11310667B2 - Status: Granted - Kind: B2 - Application number: 16/475,320 - Filed: 2017-12-29 - Published: 2020-12-10 - Granted: 2022-04-19 - Earliest claimed: 2016-12-30 - Assignees: AVL List GmbH - Applicants: Avl List GmbH - Inventors: Peter Priller - Web page: https://patentgrep.com/patent/US11310667B2 ## CPC - H04L 41/28: Restricting access to network management systems or functions, e.g. using authorisation function to access network configuration - H04W 12/033: of the user plane, e.g. user's traffic - H04W 12/041: Key generation or derivation - H04W 12/0431: Key distribution or pre-distribution; Key agreement - H04W 12/06: Authentication - H04W 12/10: Integrity - H04W 12/50: Secure pairing of devices - H04W 12/71: Hardware identity - H04W 76/14: Direct-mode setup - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A method for establishing a communication connection between a network node and a communication partner in a data network is provided The network node receives at least one message from the communication partner via a wireless interface and verification data are attached to the message. The verification data include a transmitter measured data image, representative of measured data acquired by the communication partner in a preceding recording period. The network node verifies the communication partner by a comparison, based on a correlation known to the network node) and/or communicated by the communication partner to the network node of the transmitter measured data image contained in the received verification data with a receiver measured data image, which has been created separately from the transmitter measured data image and which is stored in a data memory of the network node. ## Claims ### Claim 1 A method for establishing a communication connection between a network node and a communication partner in a data network, wherein the method includes the following steps: receiving at the network node at least one message via a wireless interface from the communication partner, wherein the at least one message is a verification message, and verification data is attached to the verification message, and includes a transmitter measured data image representative of measured data acquired by the communication partner in a preceding recording period in a certain time range; and verifying, via the network node, the communication partner by a comparison, based on a correlation known to the network node and/or communicated by the communication partner to the network node, of the transmitter measured data image with a receiver measured data image created separately from the transmitter measured data image, and which is stored in a data memory of the network node; wherein after the verification of the communication partner, the network node creates at least one virtual network node on the basis of the correlation. ### Claim 2 (depends on 1) The method according to claim 1, characterized in that the data network is an ad hoc network. ### Claim 3 (depends on 1) The method according to claim 1, characterized in that the network node and the communication partner are a measuring device or an automation system of a measurement environment independent of one another. ### Claim 4 (depends on 3) The method according to claim 3, characterized in that the network node creates an encryption key for an encrypted communication with the communication partner based on the transmitter measured data image. ### Claim 5 (depends on 1) The method according to claim 1, characterized in that the network node creates an encryption key for an encrypted communication with the communication partner based on the transmitter measured data image. ### Claim 6 (depends on 5) The method according to claim 5, characterized in that the network node further creates the encryption key for the encrypted communication with the communication partner on the basis of the receiver measured data image. ### Claim 7 (depends on 1) The method according to claim 1, characterized in that the network node creates an encryption key for an encrypted communication with the communication partner on the basis of the receiver measured data image. ### Claim 8 (depends on 7) The method according to claim 7, characterized in that after the verification of the communication partner, the network node creates at least one virtual network node on the basis of the correlation. ### Claim 9 A network node comprising: at least one transducer, at least one wireless interface, at least one processor unit, and at least one data memory, wherein program logic executable by the network node is implemented in the network node, characterized in that the executable program logic of the network node is configured and arranged to receive at the network node at least one message via a wireless interface from a communication partner, wherein the at least one message is a verification message, and verification data is attached to the verification message and includes a transmitter measured data image representative of measured data acquired by the communication partner in a preceding recording period in a certain time range, and verify, via the network node, the communication partner by a comparison, based on a correlation known to the network node and/or communicated by the communication partner to the network node, of the transmitter measured data image with a receiver measured data image created separately from the transmitter measured data image, and which is stored in the at least one data memory of the network node; wherein the executable program logic of the network node is further configured and arranged, after the verification of the communication partner, to create at least one virtual network node on the basis of the correlation. ### Claim 10 (depends on 9) The network node according to claim 9, characterized in that the network node is a measuring device configured and arranged for use with a measuring environment. ### Claim 11 (depends on 9) The network node according to claim 9, characterized in that the network node is a measuring device configured and arranged for use with an automation system or an engine test bench. ### Claim 12 (depends on 9) The network node of claim 9, wherein the executable program logic of the network node is further configured and arranged to create an encryption key for an encrypted communication with the communication partner based on the transmitter measured data image. ### Claim 13 (depends on 9) The network node of claim 9, wherein the executable program logic of the network node is further configured and arranged to create an encryption key for an encrypted communication with the communication partner on the basis of the receiver measured data image.