Patents by Inventor Hong O. Zhang
Hong O. Zhang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20200244417Abstract: A method performed by a WTRU may comprise receiving a beamformed physical control channel using a first beamformed pilot signal. The beamformed physical control channel may include an indication of a beam for a physical shared channel. The indicated beam of the physical shared channel and a beam of the beamformed physical control channel may be different. The method may further comprise receiving, based on the indicated beam, the physical shared channel using a second beamformed pilot signal. In an embodiment, the WTRU may receive an RRC message including an indication of a code of the first beamformed pilot signal.Type: ApplicationFiled: April 14, 2020Publication date: July 30, 2020Applicant: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Benoit Pelletier, Lujing Cai, Diana Pani, Hong O. Zhang, Damian C. Hamme
-
Patent number: 10623160Abstract: A wireless transmit/receive unit (WTRU) may receive a radio resource control (RRC) message providing configuration information for a physical control channel. The WTRU may monitor the physical control channel using a pilot signal of the physical control channel. The pilot signal may be derived from the pilot sequence and an index of the physical control channel.Type: GrantFiled: February 13, 2017Date of Patent: April 14, 2020Assignee: InterDigital Patent Holdings, Inc.Inventors: Benoit Pelletier, Lujing Cai, Diana Pani, Hong O. Zhang, Damian C. Hamme
-
Patent number: 10341992Abstract: A method and apparatus for transmitting using beam are disclosed. A wireless transmit/receive unit (WTRU) may transmit a first physical random access channel (PRACH) preamble to a base station using a first beam at a first power level. The WTRU may receive an indication that the first PRACH preamble was received by the base station. If the indication was received, the WTRU may transmit data. If the indication was not received, the WTRU may select the first beam or a second beam to use for a second PRACH preamble. Further, the first and second beams may be different beams. If the first beam is selected, the WTRU may increase a transmission power level of the second PRACH preamble by a first power ramp step. If the second beam is selected, the WTRU may not increase the transmission power level of the second PRACH preamble by the first power ramp step.Type: GrantFiled: May 7, 2018Date of Patent: July 2, 2019Assignee: InterDigital Patent Holdings, Inc.Inventors: Benoit Pelletier, Lujing Cai, Hong O. Zhang, Fengjun Xi, Joseph S. Levy
-
Patent number: 10299227Abstract: A method for dynamically controlling the transmit power of transmission streams transmitted via multiple antennas is disclosed. A transmit power level for multiple streams is determined based on a first reference channel. The difference of signal to interface ratios (SIRs) between two reference channels may represent a power offset. The power offset may be used to determine gain factors used to transmit data channels on the secondary stream with reference to the gain factor of the first reference channel. The power offset may be used to determine other parameters, such a serving grant or transport block sizes of channels carried on the secondary stream. The power offset may allow transmission parameters of channels on the secondary stream to be determined based on the transmit power level of the primary stream and a gain factor for a reference channel transmitted via the primary stream.Type: GrantFiled: September 24, 2013Date of Patent: May 21, 2019Assignee: InterDigital Patent Holdings, Inc.Inventors: Lujing Cai, Benoit Pelletier, Hong O. Zhang, Fengjun Xi
-
Publication number: 20180343647Abstract: A method and apparatus for transmitting using beam are disclosed. A wireless transmit/receive unit (WTRU) may transmit a first physical random access channel (PRACH) preamble to a base station using a first beam at a first power level. The WTRU may receive an indication that the first PRACH preamble was received by the base station. If the indication was received, the WTRU may transmit data. If the indication was not received, the WTRU may select the first beam or a second beam to use for a second PRACH preamble. Further, the first and second beams may be different beams. If the first beam is selected, the WTRU may increase a transmission power level of the second PRACH preamble by a first power ramp step. If the second beam is selected, the WTRU may not increase the transmission power level of the second PRACH preamble by the first power ramp step.Type: ApplicationFiled: May 7, 2018Publication date: November 29, 2018Applicant: InterDigital Patent Holdings, Inc.Inventors: Benoit Pelletier, Lujing Cai, Hong O. ZHANG, Fengjun Xi, Joseph S. Levy
-
Patent number: 9887752Abstract: Systems and methods for managing control signaling overhead for a multi-carrier HSDPA (MC-HSDPA) may be disclosed. In particular, a plurality of downlink carriers may be received and bundled or paired. Configuration information indicative of the bundling may then be generated and transmitted. Additionally, one or more components such as antennas, user equipment (UE), and the like may receive an indication of a configuration or state via a high speed shared control channel (HS-SCCH) order where the indication includes order bits and order types and the configuration may be applied to activate and/or deactivate the components or operations such as uplink closed-loop transmit diversity (CLTD), uplink multiple-input multiple-output (MIMO). The order bits and/or order types may also be extended to support the activation/deactivation of additional carriers of MC-HSDPA.Type: GrantFiled: June 9, 2016Date of Patent: February 6, 2018Assignee: InterDigital Patent Holdings, Inc.Inventors: Fengjun Xi, Lujing Cai, Joseph S. Levy, Benoit Pelletier, Hong O. Zhang
-
Patent number: 9843365Abstract: Disclosed herein are system and method embodiments for selection of transmission parameters for transmit diversity terminals. According to an aspect, a method for controlling wireless receive/transmit unit transmission parameters may include configuring a WRTU to transmit dual stream when a first stream is using a predetermined transport format (TF) or subset of the TF. The method may also include applying the configuration to the WRTU.Type: GrantFiled: December 30, 2011Date of Patent: December 12, 2017Assignee: InterDigital Patent Holdings, Inc.Inventors: Benoit Pelletier, Hong O. Zhang, Diana Pani
-
Patent number: 9826490Abstract: A method for dynamically controlling the transmit power of transmission streams transmitted via multiple antennas is disclosed. A transmit power level for multiple streams is determined based on a first reference channel. The difference of signal to interface ratios (SIRs) between two reference channels may represent a power offset. The power offset may be used to determine gain factors used to transmit data channels on the secondary stream with reference to the gain factor of the first reference channel. The power offset may be used to determine other parameters, such a serving grant or transport block sizes of channels carried on the secondary stream. The power offset may allow transmission parameters of channels on the secondary stream to be determined based on the transmit power level of the primary stream and a gain factor for a reference channel transmitted via the primary stream.Type: GrantFiled: June 14, 2016Date of Patent: November 21, 2017Assignee: InterDigital Patent Holdings, Inc.Inventors: Lujing Cai, Benoit Pelletier, Hong O. Zhang, Fengjun Xi
-
Patent number: 9774374Abstract: Disclosed herein are system and method embodiments for selection of transmission parameters for transmit diversity terminals. According to an aspect, a method for controlling wireless receive/transmit unit transmission parameters may include configuring a WRTU to transmit dual stream when a first stream is using a predetermined transport format (TF) or subset of the TF. The method may also include applying the configuration to the WRTU.Type: GrantFiled: December 30, 2011Date of Patent: September 26, 2017Assignee: InterDigital Patent Holdings, Inc.Inventors: Benoit Pelletier, Hong O. Zhang, Diana Pani
-
Publication number: 20170155487Abstract: A method and apparatus for determining pilot information is disclosed. A wireless/transmit receive unit (WTRU) receives a plurality of high speed shared control channel (HS-SCCH) resources including radio resource control (RRC) configuration information for high speed downlink packet access (HSDPA), wherein the RRC configuration information includes dedicated pilot information associated with each received HS-SCCH resource. The WTRU detects a high speed downlink shared channel (HS-DSCH) radio network transmission identifier (H-RNTI) associated with the WTRU in one of the plurality of HS-SCCH resources. The WTRU determines pilot information, based on the dedicated pilot information and the one of the plurality of HS-SCCH resources, for a high speed physically downlink shared channel (HS-PDSCH) associated with the one of the plurality of HS-SCCH resources.Type: ApplicationFiled: February 13, 2017Publication date: June 1, 2017Applicant: InterDigital Patent Holdings, Inc.Inventors: Benoit Pelletier, Lujing Cai, Diana Pani, Hong O. Zhang, Damian C. Hamme
-
Patent number: 9668241Abstract: Feedback information for multiple serving cells are transmitted on high speed dedicated physical control channel (HS-DPCCH). A slot format for transmitting feedback information is determined based on the number of configured secondary serving cells and whether multiple input multiple-output (MIMO) is configured in the serving cells. Spreading factor is reduced to 128 when two secondary serving cells are configured and MIMO is configured in at least one of the two configured secondary serving cells, or when three secondary serving cells are configured. The serving cells are grouped into feedback groups, each feedback group having one or more serving cells. Channel coding may be applied to feedback information for the feedback groups. The resulting encoded feedback information for the feedback groups is concatenated to form composite feedback information.Type: GrantFiled: July 9, 2013Date of Patent: May 30, 2017Assignee: InterDigital Patent Holdings, Inc.Inventors: Lujing Cai, Benoit Pelletier, Hong O. Zhang, Fengjun Xi, Yingxue K. Li, Christopher Cave, Yan Li
-
Publication number: 20160295530Abstract: A method for dynamically controlling the transmit power of transmission streams transmitted via multiple antennas is disclosed. A transmit power level for multiple streams is determined based on a first reference channel. The difference of signal to interface ratios (SIRs) between two reference channels may represent a power offset. The power offset may be used to determine gain factors used to transmit data channels on the secondary stream with reference to the gain factor of the first reference channel. The power offset may be used to determine other parameters, such a serving grant or transport block sizes of channels carried on the secondary stream. The power offset may allow transmission parameters of channels on the secondary stream to be determined based on the transmit power level of the primary stream and a gain factor for a reference channel transmitted via the primary stream.Type: ApplicationFiled: June 14, 2016Publication date: October 6, 2016Applicant: InterDigital Patent Holdings, Inc.Inventors: Lujing Cai, Benoit Pelletier, Hong O. Zhang, Fengjun Xi
-
Publication number: 20160294459Abstract: Systems and methods for managing control signaling overhead for a multi-carrier HSDPA (MC-HSDPA) may be disclosed. In particular, a plurality of downlink carriers may be received and bundled or paired. Configuration information indicative of the bundling may then be generated and transmitted. Additionally, one or more components such as antennas, user equipment (UE), and the like may receive an indication of a configuration or state via a high speed shared control channel (HS-SCCH) order where the indication includes order bits and order types and the configuration may be applied to activate and/or deactivate the components or operations such as uplink closed-loop transmit diversity (CLTD), uplink multiple-input multiple-output (MIMO). The order bits and/or order types may also be extended to support the activation/deactivation of additional carriers of MC-HSDPA.Type: ApplicationFiled: June 9, 2016Publication date: October 6, 2016Applicant: InterDigital Patent Holdings, Inc.Inventors: Fengjun Xi, Lujing Cai, Joseph S. Levy, Benoit Pelletier, Hong O. Zhang
-
Patent number: 9407404Abstract: Systems and methods for managing control signaling overhead for a multi-carrier HSDPA (MC-HSDPA) may be disclosed. In particular, a plurality of downlink carriers may be received and bundled or paired. Configuration information indicative of the bundling may then be generated and transmitted. Additionally, one or more components such as antennas, user equipment (UE), and the like may receive an indication of a configuration or state via a high speed shared control channel (HS-SCCH) order where the indication includes order bits and order types and the configuration may be applied to activate and/or deactivate the components or operations such as uplink closed-loop transmit diversity (CLTD), uplink multiple-input multiple-output (MIMO). The order bits and/or order types may also be extended to support the activation/deactivation of additional carriers of MC-HSDPA.Type: GrantFiled: February 10, 2012Date of Patent: August 2, 2016Assignee: InterDigital Patent Holdings, Inc.Inventors: Fengjun Xi, Lujing Cai, Joseph S. Levy, Benoit Pelletier, Hong O. Zhang
-
Publication number: 20160219568Abstract: A method and an apparatus for transmitting pilots on multiple antennas are disclosed. A wireless transmit/receive unit (WTRU) may transmit a primary dedicated physical control channel (DPCCH) and at least one secondary DPCCH via multiple antennas using different channelization codes. When a required transmit power exceeds a maximum allowed transmit power of the WTRU, power scaling may be applied equally to the primary DPCCH and the secondary DPCCH, such that a power ratio between the primary DPCCH and the secondary DPCCH remains the same before scaling as after scaling. The secondary DPCCH may include a same number of pilot bits as the primary DPCCH both in a normal mode and in a compressed mode, respectively. The same total pilot energy ratio may be maintained between the primary DPCCH and the secondary DPCCH both in a normal mode and in a compressed mode, respectively.Type: ApplicationFiled: January 22, 2016Publication date: July 28, 2016Applicant: InterDigital Patent Holdings, Inc.Inventors: Benoit Pelletier, Lujing Cai, Hong O. Zhang, Fengjun Xi, Joseph S. Levy
-
Publication number: 20160087696Abstract: Uplink precoding in closed loop transmit diversity (CLTD). The methods and apparatus relate to precoder operations during an initial stage using default precoder tap weights, and a second stage wherein precoder weights obtained from a precoder control indicator channel information are used, provided the signal quality of the precoder control indicator channel is sufficiently reliable. The methods and apparatus also relate to procedures for responding to detection of an unreliable pre-coding control information (PCI) carried in a downlink feedback signal.Type: ApplicationFiled: December 2, 2015Publication date: March 24, 2016Inventors: Diana PANI, Benoit PELLETIER, Hong O. ZHANG
-
Patent number: 9209884Abstract: Uplink precoding in closed loop transmit diversity (CLTD). The methods and apparatus relate to precoder operations during an initial stage using default precoder tap weights, and a second stage wherein precoder weights obtained from a precoder control indicator channel information are used, provided the signal quality of the precoder control indicator channel is sufficiently reliable. The methods and apparatus also relate to procedures for responding to detection of an unreliable pre-coding control information (PCI) carried in a downlink feedback signal.Type: GrantFiled: March 23, 2014Date of Patent: December 8, 2015Assignee: InterDigital Patent Holdings, Inc.Inventors: Benoit Pelletier, Hong O. Zhang, Diana Pani
-
Publication number: 20150223266Abstract: Disclosed herein are system and method embodiments for selection of transmission parameters for transmit diversity terminals. According to an aspect, a method for controlling wireless receive/transmit unit transmission parameters may include configuring a WRTU to transmit dual stream when a first stream is using a predetermined transport format (TF) or subset of the TF. The method may also include applying the configuration to the WRTU.Type: ApplicationFiled: April 17, 2015Publication date: August 6, 2015Inventors: Benoit PELLETIER, Hong O. ZHANG, Diana PANI
-
Publication number: 20140226735Abstract: Methods and systems for enabling MU-MIMO functions on a UE are disclosed. A precoder codebook with precoding matrices can be generated to assist in improving system throughput. Existing specifications designed for two bit precoding information can be used to communicate higher numbers of bits of precoding information by reinterpreting fields described by such specifications. Channel state information can be provided to a base station using several disclosed feedback mechanisms. A UE can determine a current MIMO transmission mode using various implicit and explicit dynamic signaling mechanisms or semi-dynamic signaling where MIMO mode data is received from a higher layer.Type: ApplicationFiled: April 1, 2011Publication date: August 14, 2014Applicant: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Hong O. Zhang, Benoit Pelletier, Luijing Cai, Joseph S. Levy
-
Publication number: 20140204915Abstract: Uplink precoding in closed loop transmit diversity (CLTD). The methods and apparatus relate to precoder operations during an initial stage using default precoder tap weights, and a second stage wherein precoder weights obtained from a precoder control indicator channel information are used, provided the signal quality of the precoder control indicator channel is sufficiently reliable. The methods and apparatus also relate to procedures for responding to detection of an unreliable pre-coding control information (PCI) carried in a downlink feedback signal.Type: ApplicationFiled: March 23, 2014Publication date: July 24, 2014Applicant: InterDigital Patent Holdings, Inc.Inventors: Benoit Pelletier, Hong O. Zhang, Diana Pani