Minlan Yu

20100046527, Feb 25, 2010

Aug 20, 2008

12/194601

Li Li - Edison NJ, US
Marina K. Thottan - Westfield NJ, US
Minlan Yu - Princeton NJ, US

LUCENT TECHNOLOGIES INC. - Murray Hill NJ

H04L 12/28
H04L 12/56

370400, 370389

A network configuration that supports latency-equalization (LEQ) routing by effectively “storing” packets on communication links, rather than at end points. A suitable network configuration is found by (i) identifying a candidate pool of routers through which the participating client terminals and application servers can exchange packets intended for LEQ routing and (ii) analyzing the delay inventory corresponding to the network paths connecting the client terminals and application servers, through those routers. Based on the analysis, M routers from the candidate pool are selected to serve as hub nodes. Each participating client terminal is assigned m of these M hub nodes and, thereafter, directs and receives its packets intended for LEQ routing through one of these m hub nodes.

20220263771, Aug 18, 2022

May 3, 2022

17/735531

- Atlanta GA, US
- Cambridge MA, US
Junzhi Gong - Cambridge MA, US
Minlan Yu - Cambridge MA, US
Yuliang Li - Cambridge MA, US

AT&T Intellectual Property I, L.P. - Atlanta GA
President and Fellows of Harvard College - Cambridge MA

H04L 47/762
H04L 47/74
H04L 43/0876
H04L 47/52
H04L 43/062
H04L 47/80

Performance issues in a service function chain having a plurality of resources and a plurality of network functions each having a network function queue are diagnosed. Each network function queue is monitored and queueing information for input packets for each of the plurality of network functions is dumped to a data store. Each resource that is under contention is identified as well as which of the network functions is a contender for the resources. A diagnosing algorithm is used to diagnose performance problems and an impact graph for each victim packet is generated. A summary of results as a list of rules is then provided.

20190058646, Feb 21, 2019

Aug 22, 2018

16/108570

- Santa Clara CA, US
Minlan Yu - Cambridge MA, US
Yuliang Li - Cambridge MA, US

H04L 12/26

The invention provides a packet loss detection system that in near-real time detects packet loss and reports the identities of the lost packets. The identities of the lost packets are based on a set of packet-specific information that includes five-tuple flow information of the packet and other unique packet identifiers. A set of meters are placed at various vantage points in the network, each meter generates digests summarizing all the traffic passing through itself The digests are exported to a collector/analyzer, which decodes the digests and performs an analysis to detect packet losses and to determine the lost packets' identities. The collector compares between the traffic digests generated by all the meters surrounding the segment. Mismatches among the digests indicate packet losses. The collector restores the identifiers of the lost packets by further decoding the mismatches between the digests.