Indranil S Sen

US Patent:

8538340, Sep 17, 2013

Filed:

Aug 1, 2012

Appl. No.:

13/564484

Inventors:

Indranil Sen - Santa Clara CA, US

Assignee:

Apple Inc. - Cupertino CA

International Classification:

H04B 1/00
H04B 15/00

US Classification:

455 633, 455 412, 455 631, 370328, 370332, 375346

Abstract:

Mitigating interference in a mobile wireless communication device by using an estimation of the performance impact of interfering signals generated by a wireless cellular transmitter and received by a co-located Bluetooth receiver. Bluetooth frequency channels are marked suitable or unsuitable for transmission based on the performance impact estimation and the state of the wireless cellular and Bluetooth connections. The estimation accounts for properties of the wireless cellular transmitter and Bluetooth receiver as well as operational characteristics of the wireless cellular and Bluetooth connections.

US Patent:

8571475, Oct 29, 2013

Filed:

Aug 19, 2009

Appl. No.:

12/543704

Inventors:

Indranil S. Sen - Santa Clara CA, US
Graham R. Alvey - Skokie IL, US
Mark R. Braun - Elgin IL, US
James A. Van Bosch - Crystal Lake IL, US

Assignee:

Motorola Mobility LLC - Libertyville IL

International Classification:

H04B 7/00

US Classification:

455 412

Abstract:

A method, a personal area network device operating as a slave, and a short range communications device operating as a slave are disclosed. A data storage may store at least one protocol-specific channel criterion for a connection with a master short range communication device. A short range transceiver may execute a preliminary device scan of a scanning set of communication channels for radio frequency energy. A processor may decide to execute a full device scan based in part on the protocol-specific channel criterion.

US Patent:

8588696, Nov 19, 2013

Filed:

Jun 4, 2010

Appl. No.:

12/794609

Inventors:

Amit Gaikwad - Cupertino CA, US
Indranil Sen - Santa Clara CA, US

Assignee:

Apple Inc. - Cupertino CA

International Classification:

H04B 15/00

US Classification:

455 631, 455 6716, 455 6714, 455 6711, 455260, 455258, 455 412, 455 6713, 455434, 4552261, 455296, 455450, 4555531, 370252, 370338, 370346, 370331

Abstract:

A method of mitigating interference in a mobile wireless communication device by adaptively adjusting transmit power levels of a wireless cellular transceiver. A receive signal quality for a wireless non-cellular transceiver that includes interference from signals transmitted by the wireless cellular transceiver is estimated. The wireless non-cellular and wireless cellular transceivers are co-located in the mobile wireless communication device, and both transceivers are active. An actual transmit power of the wireless cellular transceiver is adjusted based on the estimated receive signal quality to a level less than a requested transmit power. The estimation of the receive signal quality and the adjusting of the actual transmit power is periodically repeated. The estimation accounts for operational properties of the wireless cellular and non-cellular transceivers as well as operational characteristics of wireless connections through the transceivers.

US Patent:

20100322287, Dec 23, 2010

Filed:

Jun 19, 2009

Appl. No.:

12/488075

Inventors:

Phan Dao Minh Truong - Chicago IL, US
Michael E. Russell - Lake Zurich IL, US
Indranil S. Sen - Santa Clara CA, US

Assignee:

Motorola, Inc. - Shaumburg IL

International Classification:

H04B 1/713
H04B 17/00

US Classification:

375133, 455 62, 375E01033

Abstract:

A method for multi-radio coexistence receives historical frequency usage information and historical time usage information from a first radio. The method creates a time and frequency mask by extrapolating the historical frequency and time usage information to future times and frequencies when the first radio will be active and uses the time and frequency mask to schedule a second radio to avoid receiving when the first radio will likely be active. A related apparatus has a collocated radio input for receiving timing usage information, a non-collocated radio input for receiving frequency usage information, and a time and frequency mask generator for creating a time and frequency mask using the timing usage information and the frequency usage information. The method and apparatus predicts collocated and non-collocated radio activity in both the time and frequency dimensions to reduce interference among radios operating in overlapping or adjacent frequency bands.

US Patent:

20110237188, Sep 29, 2011

Filed:

Mar 26, 2010

Appl. No.:

12/748230

Inventors:

Indranil Sen - Santa Clara CA, US

Assignee:

APPLE INC. - Cupertino CA

International Classification:

H04B 7/00
H04B 15/00

US Classification:

455 412, 455 633

Abstract:

Mitigating interference in a mobile wireless communication device by using an estimation of the performance impact of interfering signals generated by a wireless cellular transmitter and received by a co-located Bluetooth receiver. Bluetooth frequency channels are marked suitable or unsuitable for transmission based on the performance impact estimation and the state of the wireless cellular and Bluetooth connections. The estimation accounts for properties of the wireless cellular transmitter and Bluetooth receiver as well as operational characteristics of the wireless cellular and Bluetooth connections.

US Patent:

20110237246, Sep 29, 2011

Filed:

Mar 26, 2010

Appl. No.:

12/748180

Inventors:

Indranil Sen - Santa Clara CA, US

Assignee:

APPLE INC. - Cupertino CA

International Classification:

H04W 92/02

US Classification:

4554261

Abstract:

Mitigating interference in a mobile wireless communication device by using an estimation of the performance impact of interfering signals generated by a wireless cellular transmitter and received by a co-located wireless local area network receiver. Wireless local area network frequency band usage is modified based on the performance impact estimation and the state of the wireless cellular and wireless local area network connections. The estimation accounts for properties of the wireless cellular transmitter and wireless local area network receiver as well as operational characteristics of the wireless cellular and wireless local area network connections.

US Patent:

20130060504, Mar 7, 2013

Filed:

Sep 2, 2011

Appl. No.:

13/225290

Inventors:

Diego C. Hernandez - Foster City CA, US
Kevin Camilleri - Campbell CA, US
Indranil Sen - Santa Clara CA, US
Mohit Narang - Cupertino CA, US
Manjit Walia - San Jose CA, US

International Classification:

G06F 19/00

US Classification:

702108, 701 19

Abstract:

A test system may be provided for performing wireless communications testing of electronic devices in a building. The test system may include a mobile cart that transports the device under test to test stations in the building. The test system may include a visible guide track having visible test station indicators. The mobile cart may include an optical sensor for detecting the visible guide track and the visible test station indicators. The mobile cart may transport the device under test to the test stations along the visible guide track. The mobile cart may include a rotating stage to which the device under test may be mounted. The rotating stage may be used to rotate the device under test while the device under test transmits test data to wireless communications equipment in the building during wireless communications testing of the device under test.

US Patent:

20220416849, Dec 29, 2022

Filed:

Sep 7, 2022

Appl. No.:

17/939725

Inventors:

- CUPERTINO CA, US
Peter N. Agboh - Burlingame CA, US
Mohit Narang - Cupertino CA, US
Indranil S. Sen - Cupertino CA, US
Nicholas M. McDonnell - San Jose CA, US
Chia Yiaw Chong - San Jose CA, US

International Classification:

H04B 7/0413
H03F 3/68
H04L 5/00
H04B 1/38
H04W 4/80
H03F 3/24
H03H 9/02
H03H 9/17
H03H 9/64
H04L 5/14
H04B 1/00
H04B 1/40

Abstract:

Devices and systems useful in concurrently receiving and transmitting Wi-Fi signals and Bluetooth signals in the same frequency band are provided. By way of example, an electronic device includes a transceiver configured to transmit data and to receive data over channels of a first wireless network and a second wireless network concurrently. The transceiver includes a plurality of filters configured to allow the transceiver to transmit the data and to receive the data in the same frequency band by reducing interference between signals of the first wireless network and the second wireless network.