Yang Xu

20130086004, Apr 4, 2013

Mar 1, 2012

13/409974

H. Jonathan CHAO - Holmdel NJ, US
Yang Xu - Brooklyn NY, US

G06F 17/30

707690, 707E17005, 707E17007, 707E17052

A representation of a new rule, defined as a set of a new transition(s), is inserted into a perfect hash table which includes previously placed transitions to generate an updated perfect hash table. This may be done by, for each new transition: (a) hashing the new transition; and (b) if there is no conflict, inserting the hashed new transition into the table. If, however, the hashed new transition conflicts with any of the previously placed transitions, either (A) any transitions of the state associated with the conflicting transition are removed from the table , the hashed new transition is placed into the table, and the removed transitions are re-placed into the table, or (B) any previously placed transitions of the state associated with the new transition are removed, and the transitions of the state associated with the new transition are re-placed into the table.

20130086017, Apr 4, 2013

Mar 1, 2012

13/409947

H. Jonathan Chao - Holmdel NJ, US
Yang Xu - Brooklyn NY, US

G06F 7/00

707698, 707E17044

A multi-dimensional perfect hash table construction technique is based on which the well-known AC automaton, and can be implemented by very compact perfect hash tables. The technique may place transitions, each from a source state to a destination state, of an automaton into a hash table to generate a perfect hash table by: (a) dividing the transitions into multiple independent sets according to their respective source states; (b) ordering the sets of transitions based on the number of transitions belonging to the set, thereby defining an order of the sets from largest to smallest; and (c) constructing a perfect hash table by, for each of the sets of transitions, in the order from largest to smallest, hashing the transitions of the set into the hashing table to generate a perfect hashing table.

20180138897, May 17, 2018

May 11, 2016

15/573385

Yang Xu - New York NY, US
Peter R. Kinget - Summit NJ, US

H03J 3/08
H03J 5/24

Switched capacitor radio frequency receiver front-ends are provided, comprising: a plurality of banks, each comprising: a first switch connected to a RF input signal; a sampling capacitor connected to the first switch and to ground; a second switch connected in parallel to the sampling capacitor; and a Gm cell coupled to the sampling capacitor and an output; wherein: the output of the Gm cell of each of the plurality on banks are coupled together; and the first switch and the second switch are controlled by a multi-phase signal that causes, for each of the plurality of banks, the first switch to be turned ON at a first point in time and the second switch to be turned ON at a second point in time, wherein the first point in time for a first bank is not the same as the first point in time for a second bank.

20170289048, Oct 5, 2017

Mar 30, 2017

15/474445

- New York NY, US
Kuan-yin CHEN - Astoria NY, US
Yang XU - Livingston NJ, US

H04L 12/819
H04L 12/835

The problem of collisions and/or congestion at output ports of switches, especially in shallow-buffered commodity switches, can be solved by: (a) receiving by the switch, a packet; (b) extracting destination information from the packet; (c) looking up, using the extracted destination information, an output port for the packet; (d) determining whether or not to redirect the packet based on a congestion level of a buffer associated with the output port; (f) responsive to a determination to redirect the packet, (1) dispatching the packet to a dedicated reservoir port of the switch, wherein the reservoir port enforces a queue discipline, (2) receiving, by a reservoir, the redirected packet, (3) temporarily buffering, in an internal queue of the reservoir, the received, redirected packet, and (4) sending the temporarily buffered, received, redirected packet back to the switch. Otherwise, responsive to a determination to not redirect the packet, the packet is dispatched to the output port of the switch. In at least some example embodiments consistent with the present invention, any packets sent back to the switch are paced such that collisions and congestion at the switch output port is relieved.

20160248703, Aug 25, 2016

Feb 25, 2015

14/631642

- Atlanta GA, US
Angela L. Chiu - Holmdel NJ, US
Oliver Spatscheck - Randolph NJ, US
Chengwei Wang - Neshanic Station NJ, US
Yang Xu - Whitehouse Station NJ, US

AT&T Intellectual Property I, L.P. - Atlanta GA

H04L 12/939
H04L 12/741
H04L 12/803
H04L 12/931

A provider edge (“PE”) router system and a PE router system controller for hybrid virtualization of PE router functions is disclosed herein. According to one aspect of the concepts and technologies disclosed herein, a PE router system operating at a PE of a network includes an elastic computing system and a plurality of switches. The elastic computing system can include a plurality of hardware resources and a plurality of virtual machines. Each virtual machine of the plurality of virtual machines can utilize at least a portion of the plurality of hardware resources to perform operations. The plurality of virtual machines can include a port virtual machine that provides an interface to a customer edge (“CE”) router operating at a CE of the network. The port virtual machine can provide a first set of operations. The plurality of switches can provide a second set of operations.

20160112246, Apr 21, 2016

Jun 23, 2015

14/747300

- Armonk NY, US
Shu Tao - Irvington NY, US
Yang Xu - Brooklyn NY, US

H04L 12/24

Identifying state inconsistency in edge-based software defined networks is disclosed. A verification server may receive controller network configuration data from a controller of an edge-based software defined network (SDN) and end-host network configuration data from at least one end-host of the SDN. The verification server may parse the controller network configuration data into a network state representation and the end-host network configuration data into the network state representation. The network state representation of the controller network configuration data and the end-host network configuration data may be compared to identify state inconsistency in the SDN. Responsive to identifying the state inconsistency, an alert and/or a report may be generated and transmitted to an administrator user interface.

20160112269, Apr 21, 2016

Oct 17, 2014

14/517351

- Armonk NY, US
Shu Tao - Irvington NY, US
Yang Xu - Brooklyn NY, US

H04L 12/24
H04L 12/26

Identifying state inconsistency in edge-based software defined networks is disclosed. A verification server may receive controller network configuration data from a controller of an edge-based software defined network (SDN) and end-host network configuration data from at least one end-host of the SDN. The verification server may parse the controller network configuration data into a network state representation and the end-host network configuration data into the network state representation. The network state representation of the controller network configuration data and the end-host network configuration data may be compared to identify state inconsistency in the SDN. Responsive to identifying the state inconsistency, an alert and/or a report may be generated and transmitted to an administrator user interface.

20150113063, Apr 23, 2015

Oct 21, 2014

14/520323

Yong LIU - Brooklyn NY, US
Yang XU - Brooklyn NY, US
Chenguang YU - Brooklyn NY, US

H04L 29/06
H04M 3/56
H04N 7/15

709204

The determination of user perceived delay in audio and video conferencing systems/services is described. Example embodiments consistent with the present invention measure delays in audio and/or video conferencing systems and services, by treating such systems and services as black boxes, thereby providing end-to-end delays as they would be perceived by users. For example, the user perceived round-trip delay in a video conference system/service may include time delays from each of video capture, video encoding, video transmission, video decoding and video rendering.