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    Last resort frequency mechanism in a wireless communication system
    2.
    发明授权
    Last resort frequency mechanism in a wireless communication system 有权

    公开(公告)号：US11036200B2

    公开(公告)日：2021-06-15

    申请号：US16600977

    申请日：2019-10-14

    Applicant: CORETIGO LTD.

    Inventor： Dan Wolberg ,  Nir Efraim Joseph Tal

    IPC: H04L5/00 ,  H04L1/00 ,  G05B19/05 ,  G05B19/418 ,  H04L1/20 ,  H04B1/7136 ,  H04B1/713 ,  H04B1/7143 ,  H04L12/855 ,  H04L12/863 ,  H04W28/02 ,  H04W28/04 ,  H04W84/20

    Abstract: A novel and useful acknowledgement and adaptive frequency hopping mechanism for use in wireless communication systems such as IO-Link Wireless. One or two additional acknowledgement bits are added to packet transmissions. One is a current acknowledgment bit which indicates whether a packet was successfully received anytime during the current cycle. The second bit is a previous acknowledgment bit which indicates whether packets were received successfully anytime during the previous cycle. An adaptive hopping table is constructed using a greedy algorithm which chooses frequencies with the best PER for transmission of higher priority packets, while equalizing the PER products across cycles. A last resort frequency mechanism further improves transmission success by switching to a better performing channel for the last subcycle when previous attempts to transmit a high priority packet have failed.

    Human machine interface for mission critical wireless communication link nodes
    5.
    发明授权
    Human machine interface for mission critical wireless communication link nodes 有权

    公开(公告)号：US11212849B2

    公开(公告)日：2021-12-28

    申请号：US16523236

    申请日：2019-07-26

    Applicant: CoreTigo, Ltd.

    Inventor： Ofer Blonskey ,  Dan Wolberg

    IPC: H04W4/80 ,  H04W64/00 ,  H04W76/10 ,  H04W56/00

    Abstract: A mission critical wireless link (MCWL) node for communicating with a human machine interface (HMI) terminal over a mission critical wireless link is provided. The MCWL node includes a MCWL wireless circuit configured to communicate with a first MCWL node over the mission critical wireless link by employing a mission critical communication protocol; an HMI communication circuit for communicating with an HMI terminal over the mission critical wireless link by employing a short-range communication protocol; a synchronizer for controlling at least a time at which the MCWL wireless circuit and the HMI communication circuit access the wireless link; a multiplexer coupled to the MCWL wireless circuit and the HMI communication circuit, wherein the multiplexer is configured to select any of the MCWL wireless circuit and the HMI communication circuit based on a control signal received from the synchronizer; and a radio frequency (RF) transceiver configured to wirelessly communicate with both the first MCWL node and the HMI terminal.

    Mission critical wireless communication link master gateway
    6.
    发明授权
    Mission critical wireless communication link master gateway 有权

    公开(公告)号：US10652059B2

    公开(公告)日：2020-05-12

    申请号：US16446004

    申请日：2019-06-19

    Applicant: CoreTigo, Ltd.

    Inventor： Ofer Blonskey ,  Eran Zigman ,  Dan Wolberg

    IPC: H04L27/14 ,  H04B17/336 ,  H04B7/19 ,  H04B7/155 ,  H04B1/16 ,  H04W88/16

    Abstract: A master gateway operable in a wireless system is provided. The master gateway includes a plurality of receivers configured to wirelessly communicate over the mission critical wireless link system with a plurality of devices; a processing circuitry coupled to the plurality of receivers; and a memory containing instructions that, when executed by the processing circuitry, configure the processing circuitry to at least control the operation of the plurality of receivers, such that at least one of the plurality of receivers is configured to receive a plurality of transmissions from the plurality of devices in succession wherein a guard time between transmissions is significantly smaller than a processing time of a receiver.

    Secure key exchange mechanism in a wireless communication system
    9.
    发明授权
    Secure key exchange mechanism in a wireless communication system 有权

    公开(公告)号：US11606688B2

    公开(公告)日：2023-03-14

    申请号：US16794283

    申请日：2020-02-19

    Applicant: CoreTigo Ltd.

    Inventor： Nir Efraim Joseph Tal ,  Dan Wolberg ,  Alex Regev

    IPC: H04W12/0433 ,  H04B1/713 ,  H04L9/32 ,  H04L69/323 ,  H04L9/08 ,  H04L9/06 ,  H04L9/14 ,  H04L12/18 ,  H04L9/40 ,  H04W12/03 ,  H04W12/037 ,  H04W12/50

    Abstract: Security features for a wireless communications system including encryption and decryption of communications, secure key exchange, secure pairing, and secure re-pairing are provided. The encryption/decryption mechanism uses AES-256 block cypher with counter mode to generate blocks of cypher bits used to encrypt and decrypt communications between a master and devices. Session keys are generated using a random salt and a counter value. The random salt is generated using a secure random number generator. A master key (or device key) is also used in generating session keys. Impermanent session keys are used to encrypt/decrypt finite amount of data. Thereafter, the session key is replaced and cypher bits are generated using the new session key. A synchronized key jump procedure ensures that the master and device switch to the new session key at the same time.

    Secure Key Exchange Mechanism In A Wireless Communication System
    10.
    发明申请
    Secure Key Exchange Mechanism In A Wireless Communication System 审中-公开

    公开(公告)号：US20200267547A1

    公开(公告)日：2020-08-20

    申请号：US16794283

    申请日：2020-02-19

    Applicant: CoreTigo Ltd.

    Inventor： Nir Efraim Joseph Tal ,  Dan Wolberg ,  Alex Regev

    IPC: H04W12/04 ,  H04W12/00 ,  H04L9/08 ,  H04L9/32 ,  H04L29/08 ,  H04B1/713

    Abstract: A novel and useful mechanism for providing security features to a wireless communications system that otherwise does not have such features. Security features including encryption and decryption of communications, secure key exchange, secure pairing, and secure re-pairing are provided. The invention is applicable to wireless communication systems such as IO-Link Wireless. The encryption/decryption mechanism uses AES-256 block cypher with counter mode to generate blocks of cypher bits used to encrypt and decrypt communications between the master and devices. Session keys are generated using a random salt and a counter value. The random salt is generated using a secure random number generator such as the CSPRNG algorithm. A master key (or device key) is also used in generating session keys. Session keys are not permanent and are used to encrypt/decrypt only a finite amount of data. Once exhausted, the session key is replaced by a new one and cypher bits are generated using the new session key. A synchronized key jump procedure ensures that the master and device switch to the new session key at the same time.

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