Inventor

Chandra Sekhar Bontu

Inventor

Nepean, CA

Overview

2001–2021

Patent span

Electricity

Primary field (CPC H)

Patents· 140 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H04Wprimary

H04WWireless communication networks42%

H04LTransmission of digital information, e.g. telegraphic communication28%

H04BTransmission16%

Y02DClimate change mitigation technologies in information and communication technologies [ict], i.e. information and communication technologies aiming at the reduction of their own energy use5%

H04JMultiplex communication5%

Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications2%

H04MTelephonic communication1%

H03LAutomatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses1%

G06FElectric digital data processing0%

G08BSignalling systems, e.g. personal calling systems0%

PatentTitleYear

11,108,426Method and apparatus for half-duplex communication2021 10,979,119Beamforming in cellular systems using the same feedback information for different physical channels2021 10,904,877TD LTE secondary component carrier in unlicensed bands2021 10,904,713Enhancing group communication services2021 10,897,334Reference signal configuration for cell coordination2021 10,856,233Coverage extension for wireless devices2020 10,798,649Method and apparatus for layer 3 configuration in a heterogeneous network2020 10,694,481Small cell demodulation reference signal and initial synchronization2020 10,673,558Configuring transmission parameters in a cellular system2020 10,506,479Handover for non-standard user equipment with special capabilities2019 10,492,172System information block enhancements2019 10,455,612Methods and apparatus for enabling further L1 enhancements in LTE heterogeneous networks2019 10,447,455Enabling higher-order modulation in a cellular network2019 10,419,233Method and apparatus for multimedia broadcast multicast service transmission2019 10,278,202Coordinated scheduling in a cellular network2019 10,178,596Method and apparatus for handover in heterogeneous cellular networks2019 10,159,109System and method for supporting time-sensitive services in a communication network2018 10,154,467Transmit power adjustment for inter-device communication in wireless communication systems2018 10,129,812Uplink transmissions for type 2 relay2018 10,028,185Method and relay node for mobile relay enablement2018 10,021,704System and method for toggling transmission parameters in a heterogeneous network2018 9,986,559TD LTE secondary component carrier in unlicensed bands2018 9,986,524Small cell demodulation reference signal and initial synchornization2018 9,973,901Enhancing group communication services2018 9,960,881System and method for modulation and coding scheme adaptation and power control in a relay network2018 9,949,289Methods and apparatus for enabling further L1 enhancements in LTE heterogeneous networks2018 9,942,808Identifying a subframe containing information relating to an uplink grant2018 9,883,483'Systems and methods for coexistence of MBMS and VoIP services'2018 9,871,642'Enabling higher-order modulation in a cellular network'2018 9,832,717Method and apparatus for layer 3 configuration in a heterogeneous network2017 9,825,741'Interference management in a wireless network'2017 9,826,381'Device handshake/discovery for inter-device communication in wireless communication systems'2017 9,800,377'Simultaneously accessing shared resources'2017 9,794,850'Procedure for formulating a signal to interference plus noise ratio'2017 9,763,110'Method and system for mobile relay enablement'2017 9,742,516'Method and system for control format detection in heterogeneous cellular networks'2017 9,717,112'Method and apparatus for small cell configuration in a heterogeneous network architecture'2017 9,699,740'Packet delay optimization in the uplink of a multi-hop cooperative relay-enabled wireless network'2017 9,681,441'Systems and methods for coexistence of MBMS and VoIP services'2017 9,674,792'System and method for modulation and coding scheme adaptation and power control in a relay network'2017 9,654,953'Method and apparatus for wireless emergency alerts'2017 9,642,121'Methods and apparatus for enabling further enhancements to flexible subframes in LTE heterogeneous networks'2017 9,628,229'Inter-cell coordination in cellular deployment'2017 9,622,138'UE measurement procedure in a heterogeneous mobile network'2017 9,591,679'Initiation of inter-device communication in wireless communication systems'2017 9,572,115'Measurement report triggering for inter-cell coordination in cellular deployment'2017 9,554,397'Identifying a subframe containing information relating to an uplink grant'2017 9,544,880'Methods and apparatus for enabling further L1 enhancements in LTE heterogeneous networks'2017 9,532,281'Methods and systems for wireless communication in heterogeneous networks'2016 9,521,600'Handover mechanism in cellular networks'2016 9,521,637'Small cell demodulation reference signal and initial synchronization'2016 9,503,935'Handover mechanism in cellular networks'2016 9,485,768'Allocating resources in a frequency-time space to mobile station data'2016 9,473,952'Method and relay node for mobile relay enablement'2016 9,467,872'Method and system for mobile relay enablement'2016 9,445,284'Packet delay optimization in the uplink of a multi-hop cooperative relay-enabled wireless network'2016 9,420,605'Method and apparatus for cell coordination in heterogeneous cellular networks'2016 9,369,247'Simultaneously accessing shared resources'2016 9,332,516'Method and system for signaling in a heterogeneous network'2016 9,313,698'Method and apparatus for handover in heterogeneous cellular networks'2016 9,301,184'Procedure for formulating a signal to interference plus noise ratio'2016 9,287,965'Smart relay network'2016 9,276,698'Determining hybrid ARQ indicators'2016 9,277,475'Mobility parameter adjustment and mobility state estimation in heterogeneous networks'2016 9,270,496'Physical uplink shared channel demodulation reference signal design for uplink coordinated transmission in type II relay'2016 9,271,324'Method and apparatus for assisted serving cell configuration in a heterogeneous network architecture'2016 9,258,745'Method and system for mobile relay enablement'2016 9,253,713'Method and system for small cell discovery in heterogeneous cellular networks'2016 9,253,647'Mobile device for a smart relay network'2016 9,232,526'Access point for device-assisted interference management in heterogeneous wireless cellular systems'2016 9,215,656'Self-contained data transfer channel'2015 9,191,164'Allocating resources in a frequency-time space to mobile station data'2015 9,184,958'System and method of encoding and transmitting codewords'2015 9,185,744'Uplink transmissions for type 2 relay'2015 9,185,717'Type II relay node initialization procedures'2015 9,184,892'Device-assisted interference management in heterogeneous wireless cellular systems'2015 9,184,886'TD LTE secondary component carrier in unlicensed bands'2015 9,155,077'Methods and apparatus for enabling further enhancements to flexible subframes in LTE heterogeneous networks'2015 9,144,010'Method and system for small cell discovery in heterogeneous cellular networks'2015 9,137,836'Inter-device communication authorization and data sniffing in wireless communication systems'2015 9,131,513'Coordinating allocation of resources for use by small cells'2015 9,100,883'Methods and systems for wireless communication in heterogeneous networks'2015 9,100,979'Hidden node interference issue in a type II relay network'2015 9,084,264'Method and apparatus for small cell configuration in a heterogeneous network architecture'2015 9,072,021'Method and apparatus for hybrid automatic repeat request operation in a heterogeneous network architecture'2015 9,036,578'Method and apparatus for control channel configuration in a heterogeneous network architecture'2015 9,014,113'User equipment architecture for inter-device communication in wireless communication systems'2015 9,014,171'Method and system for uplink interference management in heterogeneous cellular networks'2015 9,008,720'Method and system for small cell discovery in heterogeneous cellular networks'2015 8,982,895'Inter-device communication in wireless communication systems'2015 8,977,277'Method and system for spectrum sensing and low overhead feedback'2015 8,964,664'System and method for association and uplink adaptation in a relay network'2015 8,964,705'For small cell demodulation reference signal and initial synchronization'2015 8,917,668'System and method for energy saving in a wireless system'2014 8,897,203'Physical uplink shared channel demodulation reference signal design for uplink coordinated transmission in type II relay using a punctured demodulation reference signal'2014 8,891,431'Type II relay node initialization procedures'2014 8,855,240'Channel estimation and data detection in a wireless communication system in the presence of inter-cell interference'2014 8,855,549'Mobile station association procedures with type II relays'2014 8,843,139'Method and system for small cell discovery in heterogeneous cellular networks'2014 8,817,686'Downlink reference signal for type II relay'2014 8,804,596'Architecture for termination at access device'2014 8,792,399'Phase-rotated reference signals for multiple antennas'2014 8,792,412'Transmission in a relay node-based wireless communication system'2014 8,787,225'Phase-rotated reference signals for multiple antennas'2014 8,755,324'Allocating backhaul resources'2014 8,755,791'Method and system for low power downlink transmission in heterogeneous networks'2014 8,744,449'Mobility parameter adjustment and mobility state estimation in heterogeneous networks'2014 8,687,590'System and method for handover between relays'2014 8,554,228'Computing an action time for allocation of resources to a mobile station that is handing over from a source to a target base station'2013 8,472,406'Handover data integrity in a wireless data network'2013 8,468,412'Downlink transmissions for type 2 relay'2013 8,416,731'Transmission in a relay node-based wireless communication system'2013 8,406,192'Handover mechanisms with synchronous PDCP protocol under various relay architectures'2013 8,406,172'Interleaving data over frames communicated in a wireless channel'2013 8,300,591'Allocating resources in a frequency-time space to mobile station data'2012 8,045,525'Handover data integrity in a wireless data network'2011 7,899,340'Laser control in a coherent optical receiver'2011 7,894,728'Sample timing control in an optical receiver'2011 7,894,724'Method and apparatus for improving dual-polarization optical communication performance'2011 7,769,305'High-speed digital signal processing in a coherent optical receiver'2010 7,684,712'Non-linear equalizer in a coherent optical receiver'2010 7,636,525'Signal acquisition in a coherent optical receiver'2009 7,627,252'Clock recovery from an optical signal with dispersion impairments'2009 7,599,400'Methods and systems for reducing waiting-time jitter'2009 7,586,949'Interleaving data over frames communicated in a wireless channel'2009 7,555,227'Polarization compensation in a coherent optical receiver'2009 7,532,822'Clock recovery from an optical signal with polarization impairments'2009 7,522,841'Efficient data transmission and training of data processing functions'2009 7,418,212'Electrical detection of optical symbols'2008 7,302,251'Channel request and contention resolution apparatus and method'2007 7,126,939'Packet-based calls in a wireless network'2006 7,072,336'Communications using adaptive multi-rate codecs'2006 7,068,623'Communicating traffic over a wireless channel in a mobile communications system'2006 6,839,356'System and method for controlling a wireless packet switched voice call'2005 6,463,073'Slot structure and method of power control for use in a TDMA network'2002 6,445,745'Phase encoding methods for handling multiple phase modulated signals on a single channel'2002 6,418,137'Transmitted signal power control in cellular communications systems'2002 6,363,130'Detection of access bursts in TDMA communications systems'2002 6,272,186'Normal burst acquisition system for use in a cellular communications network'2001 6,256,486'Method and apparatus for measuring co-channel interference'2001

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2001–2011Patents assigned to NORTEL NETWORKS LTD (22)· patent assignee history

2001–2021Based in Nepean, CA· patent location history

2013–2021Patents assigned to BLACKBERRY LTD (90)· patent assignee history

2013–2018Patents assigned to CAI ZHIJUN (31)· patent assignee history

2013–2018Patents assigned to BONTU CHANDRA SEKHAR (25)· patent assignee history

2013–2018Patents assigned to SONG YI (22)· patent assignee history

2013–2018Based in Kanata, CA· patent location history

2013–2017Based in Ottawa, CA· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BLACKBERRY LTD	90	2013–2021
CAI ZHIJUN	31	2013–2018
BONTU CHANDRA SEKHARself	25	2013–2018
NORTEL NETWORKS LTD	22	2001–2011
SONG YI	22	2013–2018

Locations

Location	Patents	Span
Nepean, CA	121	2001–2021
Kanata, CA	12	2013–2018
Ottawa, CA	7	2013–2017