Ying Wang

US Patent:

8082303, Dec 20, 2011

Filed:

Mar 30, 2009

Appl. No.:

12/413877

Inventors:

Rajiv Laroia - Far Hills NJ, US
Junyi Li - Chester NJ, US
Vincent D. Park - Budd Lake NJ, US
Ying Wang - Easton PA, US
Aleksandar Jovicic - Piscataway NJ, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

G06F 15/173

US Classification:

709204, 709205, 709206, 709224, 370260

Abstract:

A first wireless communications device includes a wide area network (WAN) interface and a peer to peer interface. The first device discovers the presence of a second wireless communications device via a peer discovery signal, received via its peer to peer interface. The second device has been transmitting, e. g. , periodically, certain information, e. g. , its location and/or shopping preferences, to a node within the WAN. The detected first signal triggers an application alert in the first device. The first device recovers past information about the second device through a second signal received via its WAN interface. The first device uses information communicated in the first signal, e. g. , device identifier information, and information communicated in the second signal, e. g. , past location and/or shopping information, to generate a targeted message for the second device.

US Patent:

8107565, Jan 31, 2012

Filed:

Jan 28, 2009

Appl. No.:

12/360907

Inventors:

Junyi Li - Chester NJ, US
Vladimir Parizhsky - New York NY, US
Frank A. Lane - Asbury NJ, US
Aleksandar Jovicic - Piscataway NJ, US
Ying Wang - Easton PA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04L 27/08

US Classification:

375345, 375260

Abstract:

Techniques for performing automatic gain control (AGC) at a receiver are described. The receiver may receive an OFDM-based symbol composed of a cyclic prefix and a useful portion. The receiver may scale the OFDM-based symbol with an initial receiver gain, adjust the initial receiver gain based on the cyclic prefix, apply the adjusted receiver gain prior to the useful portion, and process the useful portion to recover at least one signal sent by at least one transmitter. The receiver may select the initial receiver gain, e. g. , based on a predicted received power level for the at least one transmitter, a pattern of different receiver gains, etc. The receiver may apply the initial receiver gain at the start of the OFDM-based symbol. The receiver may measure the power of a set of samples in the cyclic prefix and may adjust the receiver gain based on the measured power and a target power.

US Patent:

8121097, Feb 21, 2012

Filed:

Nov 4, 2008

Appl. No.:

12/264661

Inventors:

Junyi Li - Chester NJ, US
Saurabh Tavildar - Jersey City NJ, US
Thomas Richardson - South Orange NJ, US
Ying Wang - Easton PA, US
Aleksandar Jovicic - Piscataway NJ, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04J 3/00
H04B 7/212

US Classification:

370337, 370347

Abstract:

Techniques for transmitting signals using time hopping or time and frequency hopping are described. In one design, a terminal selects different slots to use for transmission in multiple frames with time hopping. Each frame includes multiple slots, and each slot covers a particular time duration. The selected slots are at different time locations in the multiple frames. In another design, a terminal selects different resource units to use for transmission in multiple frames with time and frequency hopping. The selected resource units are at different time and frequency locations in the multiple frames. For both designs, the terminal sends a signal (e. g. , a peer discovery signal) in the selected slots or resource units in the multiple frames. The terminal may detect for signals (e. g. , peer discovery signals) from other terminals in slots not used for transmission by the terminal.

US Patent:

8238861, Aug 7, 2012

Filed:

Jan 26, 2009

Appl. No.:

12/359595

Inventors:

Junyi Li - Chester NJ, US
Ying Wang - Easton PA, US
Thomas Richardson - South Orange NJ, US
Aleksandar Jovicic - Piscataway NJ, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04B 7/00

US Classification:

4552451, 4552411, 4552342, 4552511, 4552401, 4552491

Abstract:

Techniques for performing automatic gain control (AGC) at a terminal in a wireless communication network are described. In an aspect, the terminal may use different receiver gain settings to receive different types of signals in different time intervals. The terminal may determine a receiver gain setting for each signal type and may use the receiver gain setting to receive signals of that signal type. In another aspect, the terminal may determine a receiver gain setting for a future time interval based on received power levels for peer terminals expected to transmit in that time interval. The terminal may measure received power levels of signals received from a plurality of terminals. The terminal may determine a set of terminals expected to transmit in the future time interval and may determine the receiver gain setting for the future time interval based on the measured received power levels for the set of terminals.

US Patent:

8463301, Jun 11, 2013

Filed:

Mar 31, 2010

Appl. No.:

12/750825

Inventors:

Ying Wang - Easton PA, US
Junyi Li - Chester NJ, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04W 68/00

US Classification:

455458, 370338

Abstract:

Paging congestion control in a wireless communications system is described. Various described methods and apparatus are well suited for use in a peer to peer wireless communications system, e. g. , an ad hoc peer to peer wireless network in which decisions are made in a decentralized manner. Wireless terminals, e. g. , mobile nodes, monitor other paging activities going on and make back-off, e. g. , yielding, decisions with regard to paging based on the results of the monitoring. During a first time interval paging indicator signals are transmitted on paging indicator resources by devices intending to transmit paging signals. During a second time interval paging signals are transmitted on paging signaling resources. Monitored and processed detected paging indicator signals are used by a wireless terminal in deciding whether or not to transmit a paging indicator signal and/or a paging signal.

US Patent:

8494437, Jul 23, 2013

Filed:

Apr 22, 2009

Appl. No.:

12/427890

Inventors:

Rajiv Laroia - Far Hills NJ, US
Junyi Li - Chester NJ, US
Vincent D. Park - Budd Lake NJ, US
Ying Wang - Easton PA, US
Aleksandar Jovicic - Piscataway NJ, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04H 1/00

US Classification:

455 301, 455419

Abstract:

Methods and apparatus well suited for efficiently communicating small amounts of information relatively frequently in a wireless communications system are described. An uplink timing frequency structure for an access point includes a set of dedicated uplink communications resources, e. g. , expression advertisement interval air link resources. Different ones of the set of dedicated uplink communications resources correspond to different individual wireless communications devices currently registered with the access point. In the downlink timing frequency structure for the access point there are dedicated downlink broadcast communications resources, e. g. , expression broadcast interval air link resources and neighbor expression broadcast interval air link resources. Information received on dedicated uplink air link resources is echoed back or selectively echoed back on the dedicated downlink air link resources. Wireless communications devices monitor downlink dedicated air link resources to recover expression information being communicated by other wireless communications devices in its local vicinity.

US Patent:

8526900, Sep 3, 2013

Filed:

Jul 9, 2012

Appl. No.:

13/544169

Inventors:

Junyi Li - Chester NJ, US
Ying Wang - Easton PA, US
Thomas Richardson - South Orange NJ, US
Aleksandar Jovicic - Jersey City NJ, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04B 7/00

US Classification:

4552451, 455454, 4552321, 455524, 4554563, 455 84, 455 73, 455 23, 370335, 370443, 370348, 370330, 370230, 370277, 370278, 370341, 370320

Abstract:

Techniques for performing automatic gain control (AGC) at a terminal in a wireless communication network are described. In an aspect, the terminal may use different receiver gain settings to receive different types of signals in different time intervals. The terminal may determine a receiver gain setting for each signal type and may use the receiver gain setting to receive signals of that signal type. In another aspect, the terminal may determine a receiver gain setting for a future time interval based on received power levels for peer terminals expected to transmit in that time interval. The terminal may measure received power levels of signals received from a plurality of terminals. The terminal may determine a set of terminals expected to transmit in the future time interval and may determine the receiver gain setting for the future time interval based on the measured received power levels.

US Patent:

8605625, Dec 10, 2013

Filed:

Apr 2, 2009

Appl. No.:

12/417383

Inventors:

Rajiv Laroia - Far Hills NJ, US
Junyi Li - Chester NJ, US
Vincent D. Park - Budd Lake NJ, US
Ying Wang - Easton PA, US
Aleksandar Jovicic - Piscataway NJ, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04J 1/16
H04L 12/66
G06F 15/177

US Classification:

370255, 370356, 709221

Abstract:

Methods and apparatus supporting enhanced discovery operations in peer to peer networks are described. Peer discovery, based on direct peer to peer discovery between two mobile nodes can be somewhat limited, e. g. , due to power limitations, processing power, and/or channel conditions. An access point, e. g. , base station, monitors for and receives peer discovery signals conveying a set of identifiers from a wireless communications device. The access point retransmits at least one identifier in the set in a wireless peer to peer communications channel. Thus the access point effectively extends the peer discovery range for wireless communications devices utilizing the peer to peer network. Wireless communications devices can monitor for and recover the rebroadcast peer discovery signals from access points. Thus, via access point signaling a wireless communications device can be made situationally aware of other devices of interest which would be otherwise outside its discovery detection range.