Method for partitioning memory in a high speed network based on the type of service

Claim 1

A method for operating a high speed Asynchronous Transfer Mode (ATM) network over which data is transmitted, the high speed ATM network transporting different types of services and on different virtual channels to a network destination, the method comprising the steps of: partitioning a memory into physical pages upon system initialization; receiving a quality of service signal upon call setup identifying a type of service as one of best-effort traffic requiring a variable amount of memory space and reliable-type traffic requiring pre-allocated fixed amounts of memory space; wherein if the quality of service signal identifies the type of service as reliable-type traffic, running a segmentation algorithm which assigns a permanent number of physical pages to a given connection to create a virtual first-in, first-out (FIFO) queue; wherein if the quality of service signal identifies the type of service as best-effort type traffic, running a segmentation algorithm which assigns a permanent number of physical pages to a given connection to create a virtual first-in, first-out (FIFO) queue and if the memory space required for the best-effort type traffic exceeds the number of physical pages assigned, granting extra pages to the service to increase the size of the virtual FIFO queue if extra pages are available; storing data into a virtual FIFO queue created for the type of service identified in the quality of service signal received at call set-up; reassembling the data that is in the virtual FIFO queue created for the type of service identified in the quality of service signal received at call set-up; and transferring the reassembled data to the network destination.

Claim 2

A method for operating a high speed Asynchronous Transfer Mode (ATM) network over which data is transmitted, the high speed ATM network transporting different types of services and on different virtual channels to a network destination, the method comprising the steps of: partitioning a memory into physical pages upon system initialization; receiving a quality of service signal upon call setup identifying a type of service as one of best-effort traffic requiring a variable amount of memory space and reliable-type traffic requiring pre-allocated fixed amounts of memory space; wherein if the quality of service signal identifies the type of service as reliable-type traffic, running a segmentation algorithm which assigns a permanent number of physical pages to a given connection to create a virtual first-in, first-out (FIFO) queue; wherein if the quality of service signal identifies the type of service as best-effort type traffic, running a segmentation algorithm which assigns a permanent number of physical pages to a given connection to create a virtual first-in, first-out (FIFO) queue and if the memory space required for the best-effort type traffic exceeds the number of physical pages assigned, granting extra pages to the service to increase the size of the virtual FIFO queue if extra pages are available; storing data into a virtual FIFO queue created for the type of service identified in the quality of service signal received at call set-up; reassembling the data that is in the virtual FIFO queue created for the type of service identified in the quality of service signal received at call set-up; and transferring the reassembled data to the network destination.