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US 6,192,033 B1Granted
Method and system for using resource management cells in an ATM network
AssigneeFORE Systems, Inc.
InventorsMichael H. Benson, Nhiem Nguyen, Steven J. Schlick, George Totolos, Jr.
Life of this patent
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Abstract
An apparatus for reflecting an f-RM cell as a b-RM cell. The apparatus includes an RM cell processor which is adapted to receive the f-RM cell from an ATM network and modifies ABR information of the f-RM cell to reflect congestion regarding cells on the ATM network. The apparatus includes a transmit scheduler connected to the RM cell processor which forms the b-RM cell from the modified ABR information of the f-RM cell and sends the b-RM cell to the ATM network. The transmit scheduler is decoupled from the RM cell processor. An ATM telecommunications system. A method for reflecting an f-RM cell as a b-RM cell.
Claims40
An ATM telecommunications system comprising:
- an ATM network on which cells travel;
- a first node connected to the ATM network which produces at least a first f-RM cell and ATM cells and sends them onto the ATM network, said f-RM cell includes ABR information;
- and
- a second node connected to the ATM network, said second node having a receive section which receives the f-RM cell and the ATM cells and a transmit section which forms and produces a corresponding in-rate or out-of-rate b-RM cell in response to the f-RM cell, and which sends the b-RM cell on to the ATM network back to the first node separate and independent from the ATM cells, said b-RM cell includes the ABR information received from the corresponding f-RM cell and modifies the ABR information to reflect congestion regarding cells on the ATM network, said receive section decoupled from said transmit section.
1 more element
An apparatus for reflecting an f-RM cell as a b-RM cell comprising:
- an RM cell processing mechanism which is adapted to receive the f-RM cell and ATM cells from an ATM network and modifies ABR information of the f-RM cell to reflect congestion regarding cells on the ATM network;
- and
- a transmit scheduler mechanism connected to the RM cell processing mechanism which forms either an in-rate or out-of-rate b-RM cell from the modified ABR information of the f-RM cell and sends the b-RM cell to the ATM network separate and independent of the ATM cells, said transmit scheduler decoupled from the RM cell processing mechanism.
A method for reflecting an f-RM cell as a b-RM cell comprising the steps of:
- receiving an f-RM cell and ATM cells from an ATM network;
- modifying ABR information in an f-RM cell received from an ATM network to reflect congestion regarding cells on the ATM network with an RM processor;
- forming an in-rate or out-of-rate b-RM cell with the modified ABR information using a transmit scheduler;
- and
- sending the b-RM cell to the ATM network with the transmit scheduler independent from receiving the f-RM cell and the ATM cells.
2 more elements
An ATM telecommunications system comprising:
- an ATM network on which cells travel;
- a first node connected to the ATM network which produces at least a first f-RM cell and ATM cells and sends them onto the ATM network, said f-RM cell includes ABR information;
- and
- a second node connected to the ATM network, said second node having a receive section which receives the f-RM cell and the ATM cells and a transmit section which forms and produces a corresponding b-RM cell in response to the f-RM cell, and which sends the b-RM cell on to the ATM network back to the first node separate and independent from the ATM cells, said b-RM cell includes the ABR information received from the corresponding f-RM cell and modifies the ABR information to reflect congestion regarding cells on the ATM network, said receive section decoupled from said transmit section, the f-RM cell has a payload which includes the ABR information and wherein the second node has a connection memory which stores the payload of the f-RM cell it receives with the modified ABR information, the second node includes an RM cell processing mechanism which receives the f-RM cell and produces the corresponding b-RM cell with the ABR information modified to reflect congestion regarding cells on the ATM network, the RM cell processing mechanism includes an RM cell processor which receives the f-RM cell from the ATM network and modifies the ABR information to reflect congestion regarding cells on the ATM network, the second node receives an f-RM cell and sends a corresponding b-RM cell back onto the ATM network at a minimum specified rate, wherein the first node produces ATM cells and the first f-RM cell is sent in-band with the ATM cells to the second node, and the second node receives the f-RM cell with the ATM cells from the first node, the first node forms a connection on the ATM network with the second node to send the f-RM cell to the second node, and the second node sends the b-RM cell back to the first node on the connection.
1 more element
An apparatus for reflecting an f-RM cell as a b-RM cell comprising:
- an RM cell processor which is adapted to receive the f-RM cell and ATM cells from an ATM network and modifies ABR information of the f-RM cell to reflect congestion regarding cells on the ATM network;
- and
- a transmit scheduler connected to the RM cell processor which forms the b-RM cell from the modified ABR information of the f-RM cell and sends the b-RM cell to the ATM network separate and independent of the ATM cells, said transmit scheduler decoupled from the RM cell processor.
A method for reflecting an f-RM cell as a b-RM cell comprising the steps of:
- receiving an f-RM cell and ATM cells from an ATM network;
- modifying ABR information in an f-RM cell received from an ATM network to reflect congestion regarding cells on the ATM network with an RM processor;
- forming a b-RM cell with the modified ABR information using a transmit scheduler;
- and
- sending the b-RM cell to the ATM network with the transmit scheduler independent from receiving the f-RM cell and the ATM cells.
2 more elements
Dependencies are inferred from the claim text.