Hughes Network Systems, LLC

Hugh Networks Systems, LLC

Jayant Ramakrishnan

David Whitefield

Rob Torres

Nimesh Ambeskar

Patrick O'Neil

Varsha Gorrepati

Sanhita Joshi

A redundant architecture for a Precision Time Protocol (PTP) network includes a plurality of PTP grandmaster clocks that provide first timing messages to a plurality of PTP aware switches based on a timing reference. The PTP aware switches determine respective first timing offsets based on the timing messages received from a primary grandmaster clock and provide second timing messages to an end node of the network based on the first timing offsets. The end node determines a second timing offset for the end node based on the second timing messages received from a primary PTP aware switch and adjusts its clock based on the second timing offset. When a failure of the primary grandmaster clock and/or the primary PTP aware switch is detected, a different grandmaster clock and/or a different PTP aware switch is designated as the primary grandmaster clock and the primary PTP aware switch, respectively.

Gateway timing redundancy architecture and methods in a PTP synchronized communication system

A shared bandwidth network system to communicate network traffic between terminals and an external network is disclosed. The system includes: a point of presence (POP) for the external network; Radio Frequency Gateways (RFGWs) wherein each RFGW of the RFGWs provides one or more Radio Frequency (RF) paths, and each of the RF paths links a respective RFGW of the RFGWs with one or more terminals of the terminals; an RF path state manager to manage a RF path state for each of the RF paths; a Satellite Network Core (SNC); a Software Defined Network (SDN) controller to maintain a topology based on the RF path states, wherein the topology includes the POP, the RFGWs and the SNC; and a network layer to route network traffic between the POP, the RFGWs and the SNC based on the topology. The SNC includes a bandwidth manager to allocate bandwidth, to provide flow control to the terminals, and to provide a key state including a bandwidth allocation for each of the terminals, a key state manager to maintain the key states, and a link layer control (LLC) to transport network traffic over each of the RF paths.

Maintaining and distributing state due to temporary failures in a shared bandwidth network

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Germantown, MD, United States of America

Jayant Ramakrishnan