Apparatus and method for asynchronous transfer mode (ATM) adaptive time domain duplex (ATDD) communication
First Claim
1. A communication device which communicates data in an asynchronous transfer mode (ATM) format comprising:
- at least one buffer configured to receive data from a sending device; and
a modulation unit coupled to the buffer and configured to encapsulate at least one ATM cell into an ATM frame, the ATM cell having the received data, so that the ATM frame is communicated onto a subscriber line, such that the communicated ATM frame has a variable transmission duration, the variable transmission duration corresponding to a number of ATM cells encapsulated into the ATM frame.
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Accused Products
Abstract
Embodiments of the present invention provide communication of Asynchronous Transfer Mode (ATM) data using variable duration ATM frames between a data terminal unit (DTU) at a central office and a remote DTU at a user premises. One embodiment of the present invention can be viewed as a communication device which communicates data in an asynchronous transfer mode (ATM) format, the device comprising at least one buffer configured to receive data from a sending device, and a modulation unit coupled to the buffer and configured to encapsulate a plurality of ATM cells into an ATM frame, the plurality of ATM cells having the received data, so that the ATM frame is communicated onto a subscriber line, such that the communicated ATM frame has a variable transmission duration, the variable transmission duration corresponding to a number of the plurality of ATM cells encapsulated into the ATM frame.
144 Citations
26 Claims
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1. A communication device which communicates data in an asynchronous transfer mode (ATM) format comprising:
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at least one buffer configured to receive data from a sending device; and
a modulation unit coupled to the buffer and configured to encapsulate at least one ATM cell into an ATM frame, the ATM cell having the received data, so that the ATM frame is communicated onto a subscriber line, such that the communicated ATM frame has a variable transmission duration, the variable transmission duration corresponding to a number of ATM cells encapsulated into the ATM frame. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for communicating data in an asynchronous transfer mode (ATM) format, the method comprising the steps of:
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receiving data;
loading information corresponding to the received data into at least one ATM cell having a predefined size;
encapsulating the at least one ATM cell into an ATM frame; and
communicating the ATM frame onto a subscriber line, such that the communicated ATM frame has a variable transmission duration, the variable transmission duration corresponding to a number of ATM cells encapsulated into the ATM frame. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20, 21, 22, 23, 24, 26)
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19. A method for adjusting a duration that an asynchronous transfer mode (ATM) frame is transmitted over a subscriber line, the method comprising the steps of:
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receiving data;
parsing the received data into a plurality of data portions having information corresponding to a respective portion of the received data, each one of the data portions configured to be loaded into one of a plurality of ATM cells having a predefined size;
loading each one of the data portions into a corresponding one of the plurality of ATM cells until all the data portions have been loaded;
generating the ATM frame by encapsulating the plurality of ATM cells into the ATM frame; and
communicating the ATM frame onto the subscriber line, such that the communicated ATM frame has a variable transmission duration, the variable transmission duration corresponding to a number of the plurality of ATM cells encapsulated into the ATM frame.
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25. A communication device for data in an asynchronous transfer mode (ATM) format, comprising:
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means for receiving data;
means for loading information corresponding to the received data into at least one ATM cell having a predefined size;
means for encapsulating the at least one ATM cell into an ATM frame; and
means for communicating the ATM frame onto a subscriber line, such that the communicated ATM frame has a variable transmission duration, the variable transmission duration corresponding to a number of ATM cells encapsulated into the ATM frame.
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Specification