Matthew J Fischer

US Patent:

8170496, May 1, 2012

Filed:

Apr 22, 2009

Appl. No.:

12/428169

Inventors:

Saishankar Nandagopalan - San Diego CA, US
Jeyhan Karaoguz - Irvine CA, US
Jason A. Trachewsky - Menlo Park CA, US
Vinko Erceg - Cardiff by the Sea CA, US
Christopher J. Hansen - Sunnyvale CA, US
Matthew J. Fischer - Mountain View CA, US
Murat Mese - Rancho Palos Verdes CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H01Q 3/00
H04B 1/38
H04B 7/02

US Classification:

455 73, 4555621

Abstract:

A wireless transceiver includes at least one phased array antenna, that transmits an outbound RF signal containing outbound data to at least one remote transceiver and that receives an inbound RF signal containing inbound data from the at least one remote RF transceiver, wherein the at least one phased array antenna is configurable based on a control signal. An antenna configuration controller generates the control signal to configure the phased array antenna to hop among a plurality of radiation patterns based on a hopping sequence. At least one RF transceiver section generates the outbound RF signal based on the outbound data and that generates the inbound data based on the inbound RF signal.

US Patent:

8175542, May 8, 2012

Filed:

Apr 22, 2009

Appl. No.:

12/428185

Inventors:

Saishankar Nandagopalan - San Diego CA, US
Jeyhan Karaoguz - Irvine CA, US
Jason A. Trachewsky - Menlo Park CA, US
Vinko Erceg - Cardiff by the Sea CA, US
Christopher J. Hansen - Sunnyvale CA, US
Matthew J. Fischer - Mountain View CA, US
Murat Mese - Rancho Palos Verdes CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04B 1/38
H04B 7/02
H01Q 3/00

US Classification:

455 73, 4555621

Abstract:

A wireless transceiver includes a phased array of antennas, that transmit an outbound RF signal containing outbound data to remote transceivers and that receives an inbound RF signal containing inbound data from the remote RF transceivers, wherein the phased array of antennas is configurable based on a control signal. An antenna configuration controller generates the control signal to configure the phased array of antennas to hop among a plurality of radiation patterns based on a hopping sequence. An RF transceiver section generates the outbound RF signal based on the outbound data and that generates the inbound data based on the inbound RF signal. In one configuration, a switching section selectively couples a selected antenna of the phased array of antennas to the RF transceiver section, based on the control signal. In another configuration, the RF transceiver section includes an RF section for each antenna of the phased array of antennas.

US Patent:

8385844, Feb 26, 2013

Filed:

Apr 2, 2012

Appl. No.:

13/437349

Inventors:

Saishankar Nandagopalan - San Diego CA, US
Jeyhan Karaoguz - Irvine CA, US
Jason A. Trachewsky - Menlo Park CA, US
Vinko Erceg - Cardiff by the Sea CA, US
Christopher J. Hansen - Los Altos CA, US
Matthew James Fischer - Mountain View CA, US
Murat Mese - Rancho Palos Verdes CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04B 1/38
H04B 7/10
H04B 15/00

US Classification:

455 73, 455 631, 4555621

Abstract:

A wireless transceiver includes an antenna array that transmits an outbound RF signal containing outbound data to remote transceivers and that receives an inbound RF signal containing inbound data from the remote RF transceivers, wherein the antenna array is configurable based on a control signal. An antenna configuration controller generates the control signal to configure the antenna array to hop among a plurality of radiation patterns based on a hopping sequence. An RF transceiver section generates the outbound RF signal based on the outbound data and that generates the inbound data based on the inbound RF signal. In one configuration, a switching section selectively couples a selected one of the antennas in the array to the RF transceiver section, based on the control signal. In another configuration, the RF transceiver section includes an RF section for each antenna in the array.

US Patent:

8577416, Nov 5, 2013

Filed:

Jan 25, 2013

Appl. No.:

13/750177

Inventors:

Saishankar Nandagopalan - San Diego CA, US
Jeyhan Karaoguz - Irvine CA, US
Jason A. Trachewsky - Menlo Park CA, US
Vinko Erceg - Cardiff by the Sea CA, US
Christopher J. Hansen - Los Altos CA, US
Matthew James Fischer - Mountain View CA, US
Murat Mese - Rancho Palos Verdes CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04B 1/44
H01Q 3/00

US Classification:

4555621, 455 77

Abstract:

A wireless transceiver includes an antenna array that transmits an outbound RF signal containing outbound data to remote transceivers and that receives an inbound RF signal containing inbound data from the remote RF transceivers, wherein the antenna array is configurable based on a control signal. An antenna configuration controller generates the control signal to configure the antenna array to hop among a plurality of radiation patterns based on a hopping sequence. An RF transceiver section generates the outbound RF signal based on the outbound data and that generates the inbound data based on the inbound RF signal. In one configuration, a switching section selectively couples a selected one of the antennas in the array to the RF transceiver section, based on the control signal. In another configuration, the RF transceiver section includes an RF section for each antenna in the array.

US Patent:

8599804, Dec 3, 2013

Filed:

Aug 9, 2010

Appl. No.:

12/852859

Inventors:

Vinko Erceg - Cardiff by the Sea CA, US
Joseph Paul Lauer - North Reading MA, US
Matthew James Fischer - Mountain View CA, US
Peiman Amini - Mountain View CA, US
Joonsuk Kim - Saratoga CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04W 4/00
H04L 12/28

US Classification:

370338, 370392

Abstract:

Distributed signal field for communications within multiple user, multiple access, and/or MIMO wireless communications. In accordance with wireless communications, a signal (SIG) field employed within such packets is distributed or partitioned into at least two separate signal fields (e. g. , SIG A and SIG B) that are located in different portions of the packet. A first of the SIG fields includes information that may be processed and decoded by all wireless communication devices, and a second of the SIG fields includes information that is specific to one or more particular wireless communication devices (e. g. , a specific wireless communication device or a specific subset of the wireless communication devices). The precise locations of the at least first and second SIG fields within a packet may be varied, including placing a second of the SIG fields (e. g. , including user-specific information) adjacent to and preceding a data field in the packet.

US Patent:

8611821, Dec 17, 2013

Filed:

Apr 28, 2009

Appl. No.:

12/431085

Inventors:

Saishankar Nandagopalan - San Diego CA, US
Jeyhan Karaoguz - Irvine CA, US
Jason A. Trachewsky - Menlo Park CA, US
Vinko Erceg - Cardiff by the Sea CA, US
Matthew J. Fischer - Mountain View CA, US
Christopher J. Hansen - Sunnyvale CA, US
Murat Mese - Rancho Palos Verdes CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04M 1/00
H04W 72/00
H04L 12/413
H04L 12/28
G08C 15/00
H04B 15/00

US Classification:

455 631, 4555521, 455450, 370445, 370431, 370252

Abstract:

An adaptive communication device includes a transceiver that communicates with a first remote communication device in a millimeter wave frequency band in accordance with a first protocol. The transceiver generates conflict detection signals based on signals received from a second remote communication device that communicates in accordance with a second protocol. A conflict detection module detects communication by the second communication device based on the conflict detection signals and generates a model trigger signal in response thereto. A conflict modeling module responds to the model trigger signal by generating idle prediction data based on the conflict detection signals, wherein the idle prediction data predicts an idle period in the communications by the second remote communication device. A transmission control module generates transmit control signals based on the idle prediction data, wherein the transceiver times transmissions sent to the first remote communication device based on the transmit control signals.

US Patent:

20100111215, May 6, 2010

Filed:

Nov 4, 2009

Appl. No.:

12/612662

Inventors:

Saishankar Nandagopalan - San Diego CA, US
Matthew James Fischer - Mountain View CA, US

Assignee:

BROADCOM CORPORATION - IRVINE CA

International Classification:

H04L 27/00
H04B 1/02

US Classification:

375267, 455101

Abstract:

Beamforming protocol for wireless communications. Various communications are made between an originating communication device and a remote communication device to effectuate steered communications there between. The beamforming approach presented herein is applicable and adaptable to communication devices having any combination of omni-directional and directional transmit and receive functionality (e.g., the transmit functionality and the receive functionality both being omni-directional; the transmit functionality being directional and the receive functionality being omni-directional; or the transmit functionality and the receive functionality both being are directional). The beamforming protocol presented herein allows for all combinations of communication device types and also provides collision rules as may be performed in accordance with the beamforming configuration.

US Patent:

20100309848, Dec 9, 2010

Filed:

Jun 4, 2010

Appl. No.:

12/794712

Inventors:

VINKO ERCEG - CARDIFF BY THE SEA CA, US
JOSEPH PAUL LAUER - NORTH READING MA, US
MATTHEW JAMES FISCHER - MOUNTAIN VIEW CA, US
PEIMAN AMINI - MOUNTAIN VIEW CA, US
JOONSUK KIM - SAN JOSE CA, US

Assignee:

BROADCOM CORPORATION - IRVINE CA

International Classification:

H04W 40/00
H04B 7/02

US Classification:

370328, 375267

Abstract:

Transmission coordination within multiple user, multiple access, and/or MIMO wireless communications. Within wireless communication systems, there can be various wireless communication devices therein that are not all compliant with a common capability set, communication protocol, communication standard, recommended practice, etc. For example, some communication systems may have some wireless communication devices characterized as ‘legacy’ wireless communication devices, and other wireless communication devices therein may be newer and compliant with newer capability sets, communication protocols, communication standards, recommended practices, etc. In such instances, coordination of transmissions among the various wireless communication devices may be made, when performing simultaneous transmissions, by ensuring that transmissions of devices on different channels is made when aligned on a common boundary of an OFDM symbol. Alternatively, such simultaneous transmissions may be made when offset by some multiple of OFDM symbol duration. When performing non-simultaneous transmissions, transmissions may be made based on channel availability.