Liang Cai

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:

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.