Broadcom Corporation

Avago Technologies International Sales Pte. Limited

Avago Technologies General IP (singapore) Pte. Ltd.

Avago Technologies General IP Pte, Ltd.

Vinko Erceg

Mark Kent

Jeyhan Karaoguz

Matthew James Fischer

Uri M Landau

Pieter Van Rooyen

Pieter Roux

Jun Zheng

Severine E Catreux-Erceg

Arya Behzad

John S Walley

Brima Babatunde Ibrahim

David Rosmann

Xuemin Chen

Wael William Diab

Charles Abraham

Victor Hou

Joonsuk Kim

Peiman Amini

Joseph Paul Lauer

Ron Porat

Jack Winters

Jason A Trachewsky

Christopher J Hansen

Saishankar Nandagopalan

Severine Catreux

Nihar Jindal

Murat Mese

Rohit Gaikwad

Thomas Derham

Pieter G W Van Rooyen

Nelson Ray Sollenberger

Chiu Ngok Eric Wong

Chengjin Zhang

Christopher David Szymanski

Yong Liu

Yong Li

Mark Gonikberg

Tirdad Sowlati

Sirikiat Lek Ariyavisitakul

Baoguo Yang

Payam Torab Jahromi

Hongyu Xie

Venkat Kodavati

Ning Kong

Anand Iyer

Carlos Horacio Aldana

Yasantha N Rajakarunanayake

Florin Baboescu

Sundaram Vanka

Ahmadreza Rofougaran

Min Chuin Hoo

Pieter Gw Van Rooyen

Murrat Mese

Rajendra Tushar Moorti

Amir Dov Eliaz

Eric Jon Ojard

Qi S Wang

Gordon Li

Andrew John Blanksby

Daniel Stopler

Peyush Agarwal

Luis Javier Gutierrez

Petrea Timariu

Victor T Hou

Sherman Chen

Hyoung Keun Ryu

Rana A Abdelaal

Nir Stahl Diskin

Hariramanathan Ramakrishnan

Pieter Van Rooven

Severine Erceg

Peter Van Rooyen

Severine Catreux-Erces

Arya Reza Behzad

David John Rosmann

Jun c/o Broadcom Corporation Zheng

Pieter W Roux

Pieter c/o Broadcom Corporation Van Rooyen

Systems, methods, and devices for conducting wireless communication are provided. One method includes identifying a location of a device and obtaining spectrum usage data from a database. The spectrum usage data indicates a licensed entity licensed within an area including the location of the device to communicate across a first sub-band of frequencies within a frequency band, and one or more transmission characteristics of the transmissions of the licensed entity. The method further includes determining beam steering characteristics for wireless transmissions of the device within the frequency band using the spectrum usage data. The beam steering characteristics are determined using the transmission characteristics for the licensed entity and configured to reduce interference with the transmissions of the licensed entity within the frequency band caused by the wireless transmissions of the device. The method further includes conducting wireless transmissions over the frequency band using the beam steering characteristics.

Methods and systems for coexistence with licensed entities using beam steering

A transmit power optimization and rate-control system includes a transmitter circuit having one or more power amplifiers transmit radio-frequency (RF) signals at a transmission (Tx) rate and a Tx power level. A receiver circuit receives RF signals, decodes the received RF signals and provides one or more Tx status feedbacks. A rate-control module adjusts the Tx rate based at least on a channel condition. A probing engine generates at least two consecutive frames at a first Tx power level, and a second Tx power level in response to a trigger causes the transmitter to transmit the at least two consecutive frames, and processes respective Tx status feedbacks received in response to transmission of the two consecutive frames in order to optimize the Tx power of the transmitter.

Rate control with transmitter power optimization

A device implementing unified coordination of wireless communications over multiple physical layers may include a MAC module communicatively coupled to first and second physical layer modules that are each configured to communicate with another device over first and second physical wireless channels, respectively. The MAC module may be configured to provide data to the first physical layer module for transmission to the another device over the first physical wireless channel, where the first physical wireless channel is associated with a first link parameter. The MAC module may be further configured to facilitate initializing the second physical wireless channel based at least in part on the first link parameter of the first physical wireless channel, and after initialization of the second physical wireless channel, provide second data to the second physical layer module for transmission to the another device over the second physical wireless channel.

Unified coordination of multiple physical layer devices

In some aspects, the disclosure is directed to methods and systems for utilizing protocols to enable two 802.11 devices to exchange their dynamically-changing local channel availability table and form a mutual channel availability table with time, frequency, and transmission rate domains available. This table may be used to make optimum opportunistic use of link resources by adapting packet duration, frequency utilization and transmission rate to channel conditions.

Protocols for flexible channel utilization

Coordination and synchronization is performed between two or more wireless network managers (e.g., access points (APs)). A first wireless network manager supports first communications with first other wireless communication devices, and a second wireless network manager supports second communications with those first and/or second other wirelessly case devices. The first and second wireless network managers also support communications with one another to coordinate the first and second communications supported with the first and/or second other wireless communication devices. Examples of coordination include selection of which other wireless communication devices are serviced or in communication with which of the first and second wireless network managers, selection of operational parameters (e.g., modulation coding set (MCS), beamforming, frequency band assignment, channel assignment, scheduling information, transmit power, etc.) for the first and second wireless communication devices, synchronization to a common clock (e.g., using timing synchronization function (TSF)).

Inter-AP coordination and synchronization within wireless communications

A wireless communication device is implemented to include a communication interface and a processor. The processor is configured to process communications associated with the other wireless communication devices within the wireless communication system to determine one or more traffic characteristics of those communications as well as one or more class characteristics of the other wireless communication devices. The processor is configured to classify the communications into one or more access categories based on the one or more traffic characteristics and is configured to classify the other devices into one or more device class categories based on the one or more class characteristics. The processor is then configured to generate one or more channel access control signals based on these classifications. The communication interface of the device is configured to transmit the one or more channel access control signals to one or more of the other devices.

Multiple narrow bandwidth channel access and MAC operation within wireless communications

A device implementing unified media access control (MAC) for multiple physical layer devices may include at least one processor communicatively coupled to first and second physical layer modules that are configured to communicate with another device over first and second wireless channels, respectively. The at least one processor may be configured to receive one or more data items to be transmitted to the another device and to select at least one of the first or second physical layer modules for transmission of the one or more data items based at least in part on a first condition of the first physical wireless channel and a condition of the second physical wireless channel. The at least one processor may be further configured to provide the one or more data items to the selected at least one of the first or second physical layer modules for transmission to the another device.

Unified media access control (MAC) for multiple physical layer devices

In some aspects, the disclosure is directed to methods and systems for coexistence management. A first access point operating in an unlicensed frequency band using a first RAT receives, from a second access point operating in the unlicensed frequency band using a second RAT, information regarding operation of the second access point in the unlicensed frequency band. It is determined, using the received information, that the first access point or the second access point is using a first share of the unlicensed frequency band that is below a predetermined threshold, indicating an imbalance of usage between the first RAT and the second RAT. A transmission parameter of the first access point for operating in the unlicensed frequency band using the first RAT is adjusted according to the determination. The first access point transmits the one or more packets using the adjusted transmission parameter, to cause the first access point or the second access point to use an updated share of the unlicensed frequency band that is closer to the predetermined threshold than the first share.

Adjusting transmission parameters to support coexistence fairness

Systems, methods, and devices for conducting wireless communication are provided. One method includes identifying a location of the apparatus. The method further includes obtaining spectrum usage data from a database. The spectrum usage data indicates a licensed entity licensed within an area including the location of the apparatus to communicate across a first sub-band of frequencies within a frequency band. The frequency band includes a plurality of channels each having a fixed width. The method further include determining a first set of one or more of the plurality of channels containing the first sub-band of frequencies over which the licensed entity is licensed to communicate. The method further includes conducting wireless transmissions on a second set of one or more of the plurality of channels that do not contain the first sub-band of frequencies while disabling wireless transmissions on the first set of channels.

Methods and systems for coexistence with licensed entities using spectrum puncturing

In some aspects, the disclosure is directed to methods and systems for coexistence management. A first access point is scheduled a time to begin transmission of a packet to a user device in an unlicensed frequency band using a first RAT. The time to begin the transmission is scheduled to avoid transmission overlap with a second access point using a second RAT in the unlicensed frequency band, and scheduled according to information from the second access point regarding operation in the unlicensed frequency band using the second RAT. One of the first and second RATs includes one of a WLAN RAT or a LTE based RAT, and another of the first and second RATs includes a remaining one of the WLAN RAT or the LTE based RAT, in one or more embodiments. The first access point receives updated information regarding operation in the unlicensed frequency band using the second RAT. Using the updated information, an updated time for the first access point to begin the transmission using the first RAT is determined, the updated time determined to avoid transmission overlap with the second RAT in the unlicensed frequency band. The first access point transmits, according to the determined updated time, the packet in the unlicensed frequency band using the first RAT.

Coexistence management via scheduling

A wireless device includes a first modem circuit, a second modem circuit, and one or more processor circuits. The first modem circuit supports wireless local area network (WLAN) communications. The second modem circuit supports long term evolution (LTE) and licensed assisted access (LAA) communications. The processor circuits determine free time intervals during which the second modem circuit is not engaged with a medium. The wireless device provides measurement reports to a base station. The first modem circuit enables the wireless device to perform the WLAN communications using the free time intervals without signaling to the base station.

Cellular-wireless local area network (WLAN) coexistence

Growing community of inventors

Cardiff, CA, United States of America

Vinko Erceg