Liang Cai

US Patent:

8639275, Jan 28, 2014

Filed:

Apr 25, 2013

Appl. No.:

13/870406

Inventors:

Liang Cai - San Diego CA, US
Hao Chen - Kensington CA, US
Gabriel Maganis - Davis CA, US

Assignee:

Sprint Spectrum L.P. - Overland Park KS

International Classification:

H04W 68/00

US Classification:

455458, 455410, 4554262, 4554041, 455404, 4554521, 455517, 370312, 370336, 370230, 370311, 370328, 370329, 370330, 370235

Abstract:

Disclosed herein is a method that enables a radio access network (RAN) to page more mobile stations concurrently. By reducing the size of the individual page record, more page records can fit within a general page message (GPM), and thus more mobile stations can receive page messages. One method of reducing the size of an individual page record is to reduce the size of the terminal IDs that page records carry. Currently, terminal IDs are globally unique, but they can be shortened if replaced with locally unique IDs. These locally unique IDs are unique for only mobile stations in a given paging area, unique for only mobile stations assigned to a given paging channel time slot, and/or unique for only mobile stations in a subgroup of mobile stations assigned to a given paging channel time slot. The number of mobile stations in any of these groups is smaller than the number of mobile stations in the global network. Therefore, the length of a terminal ID that is unique for only mobile stations in one of these groups can be shorter than a globally unique identifier.

US Patent:

8509821, Aug 13, 2013

Filed:

Sep 22, 2009

Appl. No.:

12/564213

Inventors:

Hui Zang - Burlingame CA, US
Liang Cai - Davis CA, US
Hao Chen - Kensington CA, US
Gabriel Maganis - Davis CA, US

Assignee:

Sprint Spectrum L.P. - Overland Park KS

International Classification:

H04W 68/00

US Classification:

455458, 455419, 455434, 370337, 370312, 370332, 370335, 370311, 370225, 370214

Abstract:

Disclosed herein is a method that enables a radio access network (RAN) to page more mobile stations concurrently. By reducing the size of the individual page record, more page records can fit within a general page message (GPM), and thus more mobile stations can receive page messages. One method of reducing the size of an individual page record is to reduce the size of the terminal IDs that page records carry. Currently, terminal IDs are globally unique, but they can be shortened if replaced with locally unique IDs. These locally unique IDs are unique for only mobile stations in a given paging area, unique for only mobile stations assigned to a given paging channel time slot, and/or unique for only mobile stations in a subgroup of mobile stations assigned to a given paging channel time slot. The number of mobile stations in any of these groups is smaller than the number of mobile stations in the global network. Therefore, the length of a terminal ID that is unique for only mobile stations in one of these groups can be shorter than a globally unique identifier.

US Patent:

20220342729, Oct 27, 2022

Filed:

Apr 23, 2021

Appl. No.:

17/239012

Inventors:

- San Diego CA, US
Liang Cai - San Diego CA, US

International Classification:

G06F 9/54
G06F 9/52
G06F 12/0875

Abstract:

Methods, systems, and devices for access control configurations for inter-processor communications are described to support reconfiguration of a dynamic access control configuration at a device. For example, additional configuration fields may be added to existing access control rules of the device, where these additional fields may be configured by a processor sending information to a receiving processor, via a shared memory resource or region of the device. The additional fields may include a read-only value which may specify a processor which has exclusive write permission for a memory region of the share memory. This value may indicate the sending processor of the memory region, and the value may be set by access control hardware when the additional field is changed. Other processors of the device may be prevented from writing to the memory region.

US Patent:

20200097646, Mar 26, 2020

Filed:

Sep 26, 2018

Appl. No.:

16/142353

Inventors:

- San Diego CA, US
Liang Cai - San Diego CA, US
Can Acar - San Diego CA, US

International Classification:

G06F 21/44
G06F 9/50

Abstract:

Techniques for managing resources on computing device are provided. An example processor according to these techniques includes a resource management module (RMM) configured to be executed by the processor as an only privileged application on the processor such that the RMM has exclusive control over the allocation of memory resources utilized by the other applications executed by the processor and assignment of access permissions to the memory resources. The RMM is configured to manage the memory resources used by other applications executed by the processor, to group applications into logical compartments, and to enforce separation between the compartments such that resources associated with one compartment are inaccessible to another compartment. The processor may include a memory protection unit (MPU) configured to provide memory protection for memory utilized by the processor, and the RMM can be configured to dynamically configure the MPU regions to enforce separation between compartments.

US Patent:

20200020330, Jan 16, 2020

Filed:

Jul 16, 2018

Appl. No.:

16/036538

Inventors:

- San Diego CA, US
Arvind KRISHNASWAMY - San Jose CA, US
Liang CAI - San Diego CA, US
Nabanita SEN - Cupertino CA, US
Jyotsna KRISHNASWAMY - Chandler AZ, US
Kenneth CHEN - San Diego CA, US

International Classification:

G10L 15/22
G10L 17/06
G01R 31/00

Abstract:

Techniques for operating a voice-activated computing device are provided. These techniques can be used to prevent voice-based attacks on such devices. An example method according to these techniques includes receiving audio content comprising a voice command, monitoring electromagnetic (EM) emissions using an EM detector of the voice-activated computing device, determining whether the audio content comprising the voice command was generated electronically or was issued by a human user based on the EM emissions detected while receiving the audio content comprising the voice command, and preventing the voice command from being executed by the voice-activated computing device responsive to determining that the voice command was generated electronically.

US Patent:

20170097857, Apr 6, 2017

Filed:

Oct 2, 2015

Appl. No.:

14/873518

Inventors:

- San Diego CA, US
Liang CAI - San Diego CA, US
Xu GUO - San Diego CA, US

International Classification:

G06F 9/54
H04W 4/00
G06F 3/0488
G06F 11/34
G06F 11/30

Abstract:

Techniques for operating a computer system for a vehicle are provided. An example method according to these techniques includes observing usage of at least one component of the computer system by an application to generate an application usage log for the application, deriving behavior vectors from the application usage log, determining whether the application is a distracting application by comparing the behavior vectors to one or more application safety rules, and limiting execution of the application responsive to determining that the application is a distracting application and based on status information associated with the vehicle.

US Patent:

20160232339, Aug 11, 2016

Filed:

Feb 6, 2015

Appl. No.:

14/616353

Inventors:

- San Diego CA, US
Xu Guo - San Diego CA, US
Liang Cai - San Diego CA, US
Xinmu Wang - San Diego CA, US

International Classification:

G06F 21/32
G06F 21/60
G06F 3/0484
G06F 21/45
G06F 1/16
G06F 3/14

Abstract:

One feature pertains to a computing device that includes an input interface, a communication interface, and a processing circuit that is adapted to receive a request from an application to authorize an action and generate a dynamic access code associated with the action. The processing circuit also transmits a message to a secondary display device that includes information data associated with the action and the dynamic access code for display on a display of the secondary display device. The processing circuit authorizes the action received from the application if the dynamic access code is entered into the input interface. Multiple, unique dynamic codes may also be associated with different actions the application may make requests for, which are also transmitted to the secondary display device for display.