Cisco Technology, Inc.

Cisco Systems Inc.

Michael Segal

Pankaj Malhotra

Hugo J W Vliegen

Samuel H Ezekiel

A method and system for hitless wireless roaming in a mobile environment. The present invention describes a system for wireless connectivity in fast moving trains. The system comprises a router for routing Internet Protocol (IP) communication signals to and from a wireless network. The router is located on an object. A first antenna is also located on the object and is communicatively coupled to the router for transmitting the communication signals to and from a plurality of access points on the wireless network. A second antenna is also communicatively coupled to the router for transmitting the communication signals to and from the plurality of access points. The second antenna is positioned a distance from the first antenna on the object that allows the router continuous access to the wireless network as the first antenna and the second antenna roam through the wireless network while the object is moving.

Method and system for hitless wireless roaming in a mobile environment

A digital system for Bit Error Rate Testing (BERT) of test transmission lines and/or devices and including a test equipment coupled to at least one transmission line for transferring digital information between the test equipment and a company office, a bit error generator coupled to the transmission lines for generating test patterns, a device for storing a plurality of predetermined profiles, each profile having associated therewith at least one parameter for measuring the integrity of the test equipment or the transmission lines, the parameters including one of the generated test patterns. The predetermined profiles are automatically sent through the test equipment and the transmission lines in a predetermined order thereby avoiding user interaction, the test equipment receives information responsive to the profiles sent through the transmission line, wherein the received information is verified against the information included in the profiles for determining the integrity of the test equipment or the transmission lines.

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Saratoga, CA, United States of America

Michael Segal