Arrangement and method relating to packet flow control
AssigneeTelefonaktiebolaget LM Ericsson
InventorDan Hörlin
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Abstract
An arrangement and a method control the flow of signals including a number of information packets in a communications network, e.g. an ATM-network. The arrangement includes a device for separating the signals in the first traffic signals and second traffic signals. The first traffic signals are signals that have a higher proportion of guaranteed resources, i.e. bandwidth, than the second traffic signals. The first traffic signals are also given a lower priority than the second traffic signals. The first and second traffic signals are handled separately.
Claims30
An arrangement for controlling the flow of signals comprising a number of information packets in a communications network, said arrangement comprising
- means for separating the signals in at least first traffic signals and second traffic signals, wherein the first traffic signals are signals having a higher proportion of guaranteed resources than the second traffic signals,
- means for handling the flow control of at least one of the first and second traffic signals separately from the flow control of the other traffic signal(s), wherein the first traffic signals are given a lower priority than the second traffic signals, and
- means for monitoring the cellrate of said second signals.
A switching arrangement for switching information packets incoming to at least one inlet unit on a number of input links through a switch core on to a number of output links, said arrangement comprising:
- means for separating incoming packets into at least a first and second traffic stream, wherein the first traffic stream comprises a higher proportion of packets guaranteed resources than the second traffic stream, the flow control of at least one of said traffic streams being handled separately from the other traffic stream(s), the packets of said first traffic stream are given a lower priority than the second traffic signals, and
- means for monitoring the cellrate of said second traffic stream.
An arrangement for controlling the flow of information packets in a communications system, comprising:
- means for separating streams of packets having a proportion of packets being guaranteed bandwidth exceeding a given value, thus at least providing first and second traffic streams,
- means for measuring the cellrate of said second packet streams,
- buffering means for temporarily storing packets of said first traffic streams separately from said second traffic stream packets,
- means for measuring the fullness of said buffering means, and
- means for feeding back the cellrate measurement results and cell credit measurement results relating to buffering fullness to the sending sources/system(s) for controlling the flow, wherein a higher priority is given to said second packets.
A system for controlling the flow of cells from a source end system to a destination end system through a network comprising a number of real nodes and a number of virtual nodes, wherein
- at least a number of the nodes comprise(s) means for separating first signals having at least a given proportion of guaranteed bandwidth from second signals having not, buffering means for temporarily storing at least the first signals and monitoring means for measuring the queue status for said first signals and for measuring the cellrate of said second signals and feeding back the results of said measurements to a preceding sending source to control the transmission of signals.
A method of controlling the flow of signals in the form of information packets incoming on a number of input links, comprising the steps of:
- separating the signals at least into first signals having a proportion of guaranteed bandwidth exceeding a given threshold value from second signals thus providing at least first and second signals respectively,
- controlling the flow of said first signals separately from said second signals through feeding results about measurements on said first and second signals respectively to sending sources, and
- giving priority to said second signals having a lower proportion of guaranteed bandwidth.
Dependencies are inferred from the claim text.