Multiplex communications – Communication techniques for information carried in plural... – Adaptive
Reexamination Certificate
2006-05-23
2006-05-23
Ngo, Ricky (Department: 2663)
Multiplex communications
Communication techniques for information carried in plural...
Adaptive
C370S474000
Reexamination Certificate
active
07050455
ABSTRACT:
A layer1frame, capable of accommodating data of any protocol selected from an STM (Synchronous Transfer Mode) signal, ATM (Asynchronous Transfer Mode) cells, a primary IP (Internet Protocol) packet and a best effort IP packet in a common frame format, is constructed by an edge node and transmitted to a data transfer system composed of edge nodes, core nodes, etc. The layer1frame includes a layer1frame header, a layer1frame payload and a payload CRC (Cyclic Redundancy Check) field. The layer1frame header includes a “Packet Length” identifier, a “Priority” identifier, a “Protocol” identifier indicating the type of the data, a “Frame Mode” identifier, a “Stuff” identifier indicating whether or not stuff data is contained in the layer1frame, and a “Header CRC” identifier. The layer1frame payload contains a layer2frame having a layer2frame header and a layer2frame payload in which the data is packed. STM layer1frames containing the STM signals are transferred with the highest priority at fixed intervals (125 μsec). Best effort IP layer1frames containing the best effort IP packets are transferred with the lowest priority. Partitioning of the best effort IP layer1frame, stuffing, dummy frames, etc. are employed for implementing the periodical transmission of the STM layer1frames.
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Harrity & Snyder LLP
Juniper Networks, Inc.
Ng Christine
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