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公开(公告)号：US11516133B2
公开(公告)日：2022-11-29
申请号：US16920993
申请日：2020-07-06
发明人： Hyunseok Chang , Fang Hao , Muralidharan Kodialam , T. V. Lakshman , Sarit Mukherjee , Limin Wang
IPC分类号： H04L12/747 , H04L12/721 , G06F12/0802 , H04L12/743 , H04L12/931 , H04L45/74 , H04L45/7453 , H04L49/00 , H04L45/00
摘要： Packet-processing circuitry including one or more flow caches whose contents are managed using a cache-entry replacement policy that is implemented based on one or more updatable counters maintained for each of the cache entries. In an example embodiment, the implemented policy enables the flow cache to effectively catch and keep elephant flows by giving to the caught elephant flows appropriate preference in terms of the cache dwell time, which can beneficially improve the overall cache-hit ratio and/or packet-processing throughput. Some embodiments can be used to implement an Open Virtual Switch (OVS). Some embodiments are advantageously capable of implementing the cache-entry replacement policy with very limited additional memory allocation.
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公开(公告)号：US10812963B2
公开(公告)日：2020-10-20
申请号：US16247797
申请日：2019-01-15
发明人： Mostafa Uddin , Fang Hao , Sarit Mukherjee , Huanle Zhang
摘要： A method, apparatus, and computer program product are disclosed for determining, by a mobile wireless device, a likelihood that a first device ID of a target wireless device corresponds to a physical location of the first wireless device at a first measurement location, based on comparing a measured received signal strength of the target wireless device at the first and a second measurement locations and comparing the measured received signal strength of one or more other wireless devices at the first and second measurement locations. The mobile wireless device registers the first device ID of the target wireless device and associates the registered first device ID with the determined corresponding physical location of the target wireless device.
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公开(公告)号：US20220006737A1
公开(公告)日：2022-01-06
申请号：US16920993
申请日：2020-07-06
发明人： Hyunseok Chang , Fang Hao , Muralidharan Kodialam , T.V. Lakshman , Sarit Mukherjee , Limin Wang
IPC分类号： H04L12/747 , G06F12/0802 , H04L12/721 , H04L12/743 , H04L12/931
摘要： Packet-processing circuitry including one or more flow caches whose contents are managed using a cache-entry replacement policy that is implemented based on one or more updatable counters maintained for each of the cache entries. In an example embodiment, the implemented policy enables the flow cache to effectively catch and keep elephant flows by giving to the caught elephant flows appropriate preference in terms of the cache dwell time, which can beneficially improve the overall cache-hit ratio and/or packet-processing throughput. Some embodiments can be used to implement an Open Virtual Switch (OVS). Some embodiments are advantageously capable of implementing the cache-entry replacement policy with very limited additional memory allocation.
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公开(公告)号：US20240195738A1
公开(公告)日：2024-06-13
申请号：US18063302
申请日：2022-12-08
发明人： Randeep Bhatia , Steven Benno , Fang Hao , TV Lakshman
摘要： A segment routing (SR) network has a plurality of interconnected SR gateways, where each of a plurality of local networks is connectable to an SR gateway at an edge router of the local network. An SR network control plane maintains a locator database that maps (i) a global IP (GIP) address for user equipment (UE) to (ii) an IP address of a downstream node associated with the UE along a path from the SR network to the UE. An SR gateway (i) receives a message for the UE and (ii) addresses the message to the IP address of the downstream node. The SR network control plane updates the locator database to map (i) the GIP address for the UE to (ii) a different IP address of a downstream node upon the SR network control plane determining that the association of the UE has changed to the different IP address.
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公开(公告)号：US11909716B1
公开(公告)日：2024-02-20
申请号：US18063314
申请日：2022-12-08
发明人： Randeep Bhatia , Steven Benno , Fang Hao , Yu Mi , T V Lakshman
IPC分类号： G06F7/02 , H04L45/586 , H04L61/5007 , H04L61/5046
CPC分类号： H04L61/5007 , H04L61/5046
摘要： Leaf nodes of a tree structure, also having a root node and intermediate nodes, communicate with endpoints via access networks and store mappings from permanent virtual IP (VIP) addresses for the endpoints to physical IP (PIP) addresses for the endpoints on the access networks. The root node and intermediate nodes store pointers for the endpoints' leaf nodes and associated access networks. When a connection setup request (CSR) for a destination endpoint is received from a corresponding node, the receiving leaf node passes the CSR up through the tree structure to a lowest common ancestor (LCA) node for the receiving leaf node and one or more destination leaf nodes associated with the destination endpoint. The LCA node uses its pointers to pass the CSR down towards the one or more destination leaf nodes, which use the corresponding VIP-to-PIP mappings to forward the CSR to the destination endpoint.
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