Liang Zhang

US Patent:

8565188, Oct 22, 2013

Filed:

Dec 21, 2010

Appl. No.:

12/974886

Inventors:

Yun Lin - San Diego CA, US
Bhadarinath B. Manjunath - Carlsbad CA, US
Prashanth Sharma - San Diego CA, US
Liang Zhang - San Diego CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04W 4/00
H04W 36/00

US Classification:

370331, 370328, 455436, 455437

Abstract:

A method for minimizing call drops during a serving cell change is disclosed. A first measurement report message is received from a user equipment (UE) requesting to change an active set of the UE. A second measurement report message is received from the UE indicating a change of a best cell and requesting a change of a serving cell to a target cell. The second measurement report message is processed before the first measurement report message is completely processed.

US Patent:

20110317642, Dec 29, 2011

Filed:

Jun 23, 2011

Appl. No.:

13/167199

Inventors:

Srinivasa R. Eravelli - San Diego CA, US
Hailiang Cai - San Diego CA, US
William L. Atkinson - Ontario, CA
Sumanth Govindappa - San Diego CA, US
Sivaram S. Palakodety - San Diego CA, US
Shenoy H. Gurudutt - San Diego CA, US
Liang Zhang - San Diego CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04W 72/04

US Classification:

370329

Abstract:

Various aspects of the disclosure provide an intra-Node B unsynchronized serving cell change enabling the typical loss of packets resulting from such a procedure to be reduced or eliminated. In one example, when a UE ceases listening to a downlink channel from a first cell provided by a Node B and starts to configure its receiver to listen to a downlink channel from a second cell provided by the Node B, a continued incrementing of a sequence number may be stalled in the transmission of packets to the UE. That is, the TSN space may be stalled, such that HARQ retransmissions recur beyond the preconfigured maximum number of retransmissions, until the UE indicates that the serving cell change is complete. In another example, the transmission of packets to the UE from the first cell may be halted until the UE indicates that the serving cell change is complete.

US Patent:

20120147869, Jun 14, 2012

Filed:

Dec 8, 2011

Appl. No.:

13/315244

Inventors:

Murtuza T. Chhatriwala - San Diego CA, US
Srinivasa R. Eravelli - San Diego CA, US
Hailiang Cai - San Diego CA, US
Sumanth Govindappa - San Diego CA, US
Liang Zhang - San Diego CA, US
Sivaram S. Palakodety - San Diego CA, US

Assignee:

QUALCOMM INCORPORATED - San Diego CA

International Classification:

H04W 92/00

US Classification:

370338

Abstract:

A method, apparatus, and computer program product can provide for procedures at an access terminal for handling the delivery of packets from the MAC entity to the RLC entity, with an aim to reduce the occurrence of RLC resets that might otherwise be caused by out-of-order processing of control packets following a serving cell change. In one example, a MAC entity may insert an identifier into a packet delivered up to the RLC entity, to indicate whether the packet arrived from the current primary serving cell. In another example, a serving cell change procedure may include steps to flush a queue at the MAC entity and kill any running reordering release timers. In these ways potential problems caused by out-of-order control packets can be reduced or avoided.

US Patent:

20120163315, Jun 28, 2012

Filed:

Dec 21, 2011

Appl. No.:

13/333999

Inventors:

Sumanth Govindappa - San Diego CA, US
Srinivasa R. Eravelli - San Diego CA, US
William L. Atkinson - Markham, CA
Liang Zhang - San Diego CA, US
Hailiang Cai - San Diego CA, US
Danlu Zhang - San Diego CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04W 72/04
H04W 88/08

US Classification:

370329, 370328

Abstract:

A method and apparatus for wireless communication may provide an RLC reset procedure tailored for a multipoint HSDPA system utilizing a plurality of disparate Node Bs to provide an RLC flow from an RNC to a UE. Some aspects of the disclosure provide for a flush request to be provided to each of a plurality of Node Bs utilized as serving cells in the multipoint HSDPA system, so that stale packets are not retained in internal buffers at the Node Bs following the RLC reset procedure. In some examples, the RLC reset procedure is only completed after confirmation that the flush of the internal buffers has been completed. Confirmation may be explicitly provided by each Node B utilizing a backhaul interface, or may be implicitly determined utilizing timers or signaling between the respective Node Bs.

US Patent:

20190208120, Jul 4, 2019

Filed:

Sep 23, 2016

Appl. No.:

16/331912

Inventors:

- San Diego CA, US
Jiangtao REN - Beijing, CN
Xiaoyi ZHU - Beijing, CN
Liang ZHANG - San Diego CA, US
Ruowei WANG - Beijing, CN

International Classification:

H04N 5/232
B64C 39/02
G06T 3/60
G06T 7/246

Abstract:

Embodiments include devices and methods for processing an image captured by an image sensor of an unmanned autonomous vehicle (UAV). A processor of the UAV may determine a body coordinate matrix of the UAV. The processor may determine an estimated rotation of the image sensor of the UAV. The processor may determine an estimated rotation of the UAV. The processor may transform an image captured by the image sensor based on the body coordinate matrix, the estimated rotation of the image sensor, and the estimated rotation of the UAV.

US Patent:

20190182428, Jun 13, 2019

Filed:

Feb 24, 2017

Appl. No.:

16/324308

Inventors:

- San Diego CA, US
Liang ZHANG - San Diego CA, US
Xiaoyi ZHU - Beijing, CN
Ruowei WANG - Beijing, CN
Jiangtao REN - Beijing, CN

International Classification:

H04N 5/232
B64D 47/08
B64C 39/02

Abstract:

Embodiments include devices and methods for adaptive image processing in an unmanned autonomous vehicle (UAV). In various embodiments, an image sensor may capture an image, while a processor of the UAV obtains attitude information from one or more attitude sensors. Such information may include the relative attitude of the UAV and changes in attitude. The processor of the UAV may determine a UAV motion mode based, at least in part, on the obtained attitude information. The UAV motion mode may result in the modification of yaw correction parameters. The processor of the UAV may further execute yaw filtering on the image based, at least in part, on the determined motion mode.

US Patent:

20190174063, Jun 6, 2019

Filed:

Sep 23, 2016

Appl. No.:

16/324351

Inventors:

- San Diego CA, US
Liang ZHANG - San Diego CA, US
Xiaoyi ZHU - Beijing CA, US
Ruowei WANG - Beijing, CN
Jiangato REN - Beijing, CN

International Classification:

H04N 5/232
G06T 5/00
B64D 47/08
B64C 39/02

Abstract:

Embodiments include devices and methods for adaptive image processing in an umnanned autonomous vehicle (UAV). In various embodiments, an image sensor may capture an image. Images may be obtained during motion or hover modes of the UAV. The UAV may determine whether stabilizing a line of the image causes a breach of an image crop margin. That is, the UAV may estimate or begin to adjust image distortion and crop the image, and may evaluate during or after the estimation/adjustment whether an image crop margin is breached by the result. The UAV may reduce stabilizing of the line of the image in response to determining that stabilizing the line of the image causes a breach of the image crop margin.

US Patent:

20190057212, Feb 21, 2019

Filed:

Mar 1, 2016

Appl. No.:

16/080200

Inventors:

Haijun ZHAO - San Diego CA, US
Jilei HOU - San Diego CA, US
Liang ZHANG - San Diego CA, US
- San Diego CA, US

International Classification:

G06F 21/53
G06Q 20/38
G06Q 20/40

Abstract:

Aspects of the disclosure are related to a method, apparatus, and system for using display content from a rich operating system (OS) environment as a background image in a trusted user interface (UI), comprising: capturing a display buffer of the rich OS environment; passing the captured display buffer to a Trusted Application; and displaying, with the Trusted Application, the captured display buffer as the background image in the trusted UI, wherein the Trusted Application is executed in a Trusted Execution Environment (TEE).