Cisco Technology, Inc.

Cisco Systems Inc.

Other

Paul Jan Long

Ian L Sayers

Sheausong Yang

Peter K Cripps

Louis R Marascio

Adam Chaney

Bhavannarayana Sri Nrusimha Nelakanti

James L deCocq

Robert Scott Comer

Scott Shong-Hsien Yu

Takafumi Nishida

Sumitaka Matsumoto

James Dixson

The invention described herein addresses the security shortcomings in existing Supervisory Control Systems (SCS), inclusive of but not limited to CAN Bus, SCADA, DCS, HEMS and IoT. The invention references U.S. Pat. No. 10,367,794 B2 Sayers et al., which is improved by the addition of a Validated Transmission data system, a Receiver Validation data system, and redundant links, which may be comprised of but not limited to technologies such as fiberoptics, time division multiplexing, frequency division multiplexing, various radio frequency links inclusive of TDM, OFDM, and CDMA modulation schemes, and a novel scheme for validating transmissions through self-generated tables by network elements.

Method for using redundant encryption to secure data in supervisory control systems

One embodiment of this invention describes a method and apparatus for the use of Machine Learning to efficiently detect, identify, prevent, and predict cyber-attacks on Low Power and Low Complexity Sensor(FIG.) networks that have low data transmission requirements, something that all current Machine Learning techniques are unable to accomplish due to numerous restrictions when applied to Low Power and Low Complexity Sensors. Low Power and Low Complexity Sensors are frequently found in various Internet of Things (IOT) network architectures. The IOT is a network of physical devices, vehicles, home appliances, and other items embedded with electronics, software, sensors, actuators, and connectivity which enables them to connect and exchange data, providing more direct integration of the physical world into computer-based systems. However, this should not restrict the applicability of any potential embodiment of this invention as described in this patent application. A further understanding of the nature and the advantages of the particular embodiments disclosed herein may be realized by referencing the remaining portions to the specification.

Method and apparatus for producing a machine learning system for malware prediction in low complexity sensor networks

One embodiment of this invention describes a method and apparatus for the secure identification and validation of low complexity sensors or devices on a network. In addition any data transmitted between the sensors/devices to/from the network is secured by means of encryption techniques. The method as described herein is intended to protect and secure sensors/devices that might transmit limited amounts of data and have reduced levels of onboard processing power. However it could easily be adapted to other types of networks to provide comparable levels of security and protection. A further understanding of the nature and the advantages of the particular embodiments disclosed herein may be realized by referencing the remaining portions to the specification and the attached drawings.

Method and apparatus for securing a sensor or device

An apparatus and a method are provided for proxying communications between devices on an IP telephony network. In a preferred embodiment, an appliance comprising a network server and proxy server software includes filtering rules which can be modified to enable proxied communication between an IP phone on a first data network, such as, for example, the internet, and a call processing server located on a second data network. In another embodiment, an appliance comprises a proxy server that proxies call-processing and signaling communications between an authenticated IP phone on a first data network and a call processing server located on a second data network. In another embodiment, the appliance relays voice traffic between IP phones. In another embodiment, the proxy server software operates in a secure mode to permit encryption and decryption of voice and control communications. In another embodiment, the proxy server enables proxied communications between a call processing server and an IP phone by modifying the provisioning data exchanged between the call processing server and the IP phone.

Proxy server for internet telephony

An application server system is provided having a core engine connecting one or more protocol providers to one or more applications, preferably including an SCCP proxy. In a preferred embodiment, the one or more applications run on a respective one or more virtual machines having their own execution threads. A thread pool may be used to spawn instances of applications or scripts. Preferably, the core engine, the protocol providers, and each of the one or more virtual machines run in separate AppDomains. In another embodiment, a visual designer is provided preferably having XML conversion capability and interactive debug capability.

Proxy for application server

A communications system extends over a cellular region formed of a plurality of wireless cells where each cell covers a portion of the cellular region. Each cell has a station which is responsible for communication with the cellular subscriber. In order to for the call to be properly managed in the public cellular domain, responsibility for call handling and processing must first be managed by the public MSC. Call handling with the public MSC for a private cellular subscriber first requires the exchange of information between the two systems. This is facilitated through the exchange of MAP and A interface signaling between the private and public cellular systems. Since this information on the private network is normally transmitted via IP, this information must be converted to standard SS7 based MAP and A protocol signaling in order for the public MSC to process.

Method and apparatus for interconnecting a private cellular network to a public cellular network

A communications system extends over a cellular region formed of a plurality of wireless cells where each cell covers a portion of the cellular region. Each cell has a base station which is responsible for communication with the cellular subscriber. In order to for the call to be properly managed in the public cellular domain, responsibility for call handling and processing must first by managed by the public MSC. Call handling with the public MSC for a private cellular subscriber first requires the exchange of information between the two systems. This is facilitated through the exchange of MAP and A interface signaling between the private and public cellular systems. Since this information on the private network is normally transmitted via IP, this information must be converted to standard SS7 based MAP and A protocol signaling in order for the public MSC to process.

Method and apparatus for integrated wireless communications in private and public network environments

A communication system formed by a private network that includes a private wireless network. The communication system includes a public wireless network using a public wireless protocol, such as GSM, and includes public networks, such as PSTN, ISDN and the Internet, using a wired protocol, such as 1P. The private network also includes a local area network (LAN) and the private network connects to the public networks using a wired packet protocol, such as IP. The public and private wireless networks operate with the same public wireless protocol, such as GSM, and the private wireless network additionally operates with a wired packet protocol, such as IP. The communication system permits users to operate freely in both public and private wireless networks using standard mobile stations while achieving high private network data rates. The communication system uses normal wireless handsets or other mobile or fixed stations without need for any modifications.

A communication system formed by a private wireless network that can be used with public wireless networks using a public wireless protocol, such as GSM, and typically includes public networks, such as PSTN, ISDN and the Internet, using a wired-packet protocol, such as IP. The private network also typically includes a local area network (LAN) and the private network typically connects to the public networks using the wired-packet protocol, such as IP. The public and private wireless networks operate with the same public wireless protocol, such as GSM, and the private wireless network additionally operates with the wired-packet protocol, such as IP. In this environment, multiple wireless cells are present and inter-cell handovers employ multiple protocols including the wired-packet protocol.

Method and apparatus for inter-cell handover in wireless networks using multiple protocols

A communication system formed by a private network that includes a private wireless network. The communication system includes a public wireless network using a public wireless protocol, such as GSM, and includes public networks, such as PSTN, ISDN and the Internet, using a wired protocol, such as IP. The private network also includes a local area network (LAN) and the private network connects to the public networks using a wired packet protocol, such as IP. The public and private wireless networks operate with the same public wireless protocol, such as GSM, and the private wireless network additionally operates with a wired packet protocol, such as IP. The communication system permits users to operate freely in both public and private wireless networks using standard mobile stations while achieving high private network data rates. The communication system uses normal wireless handsets or other mobile or fixed stations without need for any modifications.

A communications system extending over a cellular region and formed of a plurality of wireless cells. The communications system extends over a cellular region formed of a plurality of wireless cells. Each cell covers an area which includes a portion of the cellular region. Each particular cell includes a base station having a transmitter for transmitting a particular cell signal having parameters including a transmitting frequency and a transmitting power. The particular cell signal is transmitted to cover a portion of the cell region. Each of the base stations includes a parameter detector for detecting the other parameters of the other cell signals from the other cells in the cellular region. A parameter controller controls the particular parameters for the particular cell. The parameters for the particular cell are based upon the other parameters for the other cell signals so that the particular cell signal does not interfere with the other cell signals in the cellular region.

Method and apparatus for controlling wireless networks

A communications system extends over a cellular region formed of a plurality of wireless cells where each cell covers a portion of the cellular region. Each cell has a base station which is responsible for communication with the cellular subscriber. In order for a call to be properly managed in the public cellular domain, responsibility for call handling and processing must first be managed by a public MSC. Call handling with the public MSC for a private cellular subscriber first requires the exchange of information between the two systems. This is facilitated through the exchange of MAP and A interface signaling between the private and public cellular systems. Since this information on the private network is normally transmitted via IP, this information must be converted to standard SS7 based MAP and A protocol signaling in order for the public MSC to process.

A communications system extends over a cellular region formed of a plurality of wireless cells where each cell covers a portion of the cellular region. Each cell has a base station clock unit that facilitates reliable and accurate synchronization with other clocks units in other cells using a master clock signal from a global positioning system (GPS) or other accurate frequency source. The clock unit in each cell includes a local clock providing a local clock signal for clocking the cell. A master clock source provides one or more master clock signals and a clock synchronizer receives the master clock signals and forms a synchronizing master clock signal for synchronizing the local clock signal. In one or more of the wireless cells of the communication system, the clock unit is a master clock unit which includes a clock distributor for distributing a distributed master clock signal to one or more other wireless cells having slave clock units.

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San Francisco, CA, United States of America

Paul Jan Long