Nec Europe Ltd.

Nec Corporation

Faisal-Ghias Mir

Dirk Kutscher

Marcus Brunner

Giorgio Nunzi

Henrik Lundqvist

A method of operating a packet dropper in a congestion exposure-enabled network, wherein sending hosts and receiving hosts communicate with each other by sending flows of packets over network paths via intermediate routers, which, upon detecting congestion, mark packets of the flows as congestion packets, wherein congestion is indicated to the sending hosts by way of a congestion feedback mechanism, and wherein the sending hosts, upon receiving congestion indications, declare a subset of the packets they send as congestion response packets, thereby producing either conformant flows or non-conformant flows, depending on whether the amount of congestion response packets is balanced with the indicated congestion level or not, is characterized in that the packet dropper carries out in succession a series of traffic analyzing steps for identifying the non-conformant flows. Furthermore, a corresponding packet dropper for use in a congestion exposure-enabled network is described.

Framework of an efficient congestion exposure audit function

A method for supporting congestion management in a congestion exposure-enabled network, wherein sending hosts and receiving hosts communicate with each other by sending flows of packets over network paths via intermediate routers, which, upon detecting congestion, mark packets of the flows as congestion packets by including congestion information, wherein congestion is indicated to the sending hosts via a congestion feedback mechanism, and wherein the sending hosts, upon receiving congestion indications, declare a subset of the packets they send as congestion response packets by including congestion information, depending on whether the amount of congestion response packets is balanced with the indicated congestion level or not is characterized in that aggregated congestion is determined on the basis of congestion information included in packets that are sent over the network paths between the sending hosts and the receiving hosts. Furthermore, a corresponding congestion exposure-enabled network system and a corresponding intermediate router are disclosed.

Method for supporting congestion management in a congestion exposure-enabled network

For allowing a best possible usage of network resources even under congestion conditions a method for operating a wireless network, especially an IP (Internet Protocol) network, is described, wherein a queue management function based on an average queue length in a network element is used. The method is characterized in that a result of a weighting function will be combined or multiplied with the average queue length for determining a combined congestion contribution for use within the queue management function, wherein the weighting function takes into account per-user information on a wireless channel condition. Further, a corresponding wireless network, preferably for carrying out the above mentioned method, is also described.

Method for operating a wireless network and a wireless network

For allowing a very effective resource management and network utilization a method for resource management within a wireless network, especially EPS (Evolved Packet Core) of LTE (Long Term Evolution) network, is described, wherein a congestion control of data-traffic is performed. The method is characterized in that for congestion control a Re-ECN (Explicit Congestion Notification) function will be used wherein the Re-ECN function includes a policing function and a dropping function. Further, a corresponding wireless network is described, preferably for carrying out the above mentioned method.

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Heidelberg, Germany

Faisal-Ghias Mir