Method and apparatus for transmission of asynchronous, synchrono

Details Method and apparatus for transmission of asynchronous, synchrono Method and apparatus for transmission of asynchronous, synchrono

1997-06-13

1999-08-10

Pham, Chi H.

Multiplex communications

Communication techniques for information carried in plural...

Adaptive

370465, H04J 316

Patent

active

059369655

ABSTRACT:
The specification relates to a system supporting the transmission of multiple protocols over a single bytestream. The multiple protocol types supported include asynchronous transfer mode (ATM) protocol data units (PDUs), synchronous transfer mode (STM) PDUs, and variable length (VL) PDUs, as well as subtypes included within the aforementioned multiple protocol types. PDUs from higher layers are processed at three intermediate protocol layers where application layer PDUs are prepared, segmented, and repacked as asynchronous block multiplexing (ABM) PDUs. ABM PDUs include a type identification field. Cyclical redundancy checks and other error detection/correction techniques are optionally supported. ABM PDUs are multiplexed within a multiple protocol bytestream. Multiple protocol bytestream support is provided between a transmitter and receiver over a plurality of mediums, including but not limited to coaxial cable, wireless, optical fiber, hybrid fiber/coax, satellite, and twisted pair. Despite the various modes, protocols, PDU lengths, and different quality of service (QOS) requirements, support is provided over a common bytestream with a common physical layer datalink in either a point-to-point or broadcast environment.

REFERENCES:
patent: 5467342 (1995-11-01), Logston et al.
patent: 5533021 (1996-07-01), Branstad et al.
patent: 5870394 (1999-02-01), Oprea

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