Patents by Inventor Meng Sui
Meng Sui 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).
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Patent number: 10171175Abstract: An apparatus for despreading in an optical domain configured to split a received optical signal into a first optical signal and a second optical signal, perform phase deflection on the second optical signal, output a third optical signal, perform phase deflection on the first optical signal and the third optical signal, output a fourth optical signal and a fifth optical signal to a balanced receiver, and superimpose the fourth optical signal and the fifth optical signal to generate a first electrical signal. A multiplication operation in conventional code division multiple access (CDMA) despreading is transferred from an electrical domain to an optical domain such that a chip rate can be easily raised to 20 gigahertz (GHz) or even to 25 GHz, a maximum rate of 100 gigabits per second (Gbps) can be provided in a single wavelength, and a user requirement for high bandwidth can be met.Type: GrantFiled: December 28, 2017Date of Patent: January 1, 2019Assignee: Huawei Technologies Co., Ltd.Inventors: Liming Fang, Lei Zhou, Meng Sui, Xiaofeng Zhang
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Publication number: 20180145767Abstract: An apparatus for despreading in an optical domain configured to split a received optical signal into a first optical signal and a second optical signal, perform phase deflection on the second optical signal, output a third optical signal, perform phase deflection on the first optical signal and the third optical signal, output a fourth optical signal and a fifth optical signal to a balanced receiver, and superimpose the fourth optical signal and the fifth optical signal to generate a first electrical signal. A multiplication operation in conventional code division multiple access (CDMA) despreading is transferred from an electrical domain to an optical domain such that a chip rate can be easily raised to 20 gigahertz (GHz) or even to 25 GHz, a maximum rate of 100 gigabits per second (Gbps) can be provided in a single wavelength, and a user requirement for high bandwidth can be met.Type: ApplicationFiled: December 28, 2017Publication date: May 24, 2018Inventors: Liming Fang, Lei Zhou, Meng Sui, Xiaofeng Zhang
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Patent number: 9197357Abstract: Embodiments of the present invention provide a method, an apparatus, and a system for processing an optical network signal. The method includes: receiving an optical signal sent by an optical line terminal, where the optical signal includes two polarization components perpendicular to each other, and downlink data is modulated on one of the polarization components; dividing the optical signal into two signals, where each signal is the optical signal; demodulating the downlink data from one optical signal and performing, for the other optical signal, vertical polarization rotation processing and processing of modulating uplink data onto two polarization components of the optical signal; sending the other optical signal on which the vertical polarization rotation processing and the uplink data modulation processing are performed to the optical line terminal. With the embodiments of the present invention, signal processing load of the optical network unit and the optical line terminal can be lowered.Type: GrantFiled: August 6, 2014Date of Patent: November 24, 2015Assignee: Huawei Technologies Co., Ltd.Inventors: Lei Zhou, Guikai Peng, Meng Sui, Zhenping Wang, Ning Cheng
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Patent number: 9184847Abstract: An optical line terminal (OLT) configured to receive transmission requests from a plurality of both network elements (NE) and customer premises equipment (CPE), allocate a timeslot to each NE for transmission on an optical distribution network (ODN), and a timeslot to each CPE for transmission on an electrical distribution network (EDN), wherein each NE intermediates between the OLT and the CPEs. Included is a NE configured to transmit a timeslot to a CPE for transmission on an EDN allocated by an OLT, receive data frames from the CPE during the timeslot, and forward the data frames to the OLT without rescheduling. Also included is a method comprising sending a transmission request to an OLT, receiving a timeslot from the OLT for transmission on an EDN in response, transmitting data frames to a NE during the timeslot, wherein the NE forwards the data frames to the OLT without rescheduling.Type: GrantFiled: May 17, 2013Date of Patent: November 10, 2015Assignee: Futurewei Technologies, Inc.Inventors: Yuanqiu Luo, Frank J. Effenberger, Meng Sui
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Patent number: 9185555Abstract: An apparatus comprising a first passive optical network (PON) component configured to couple to a second PON component via an optical link and authenticate the second PON component based on authentication information to authorize a backup wireless link between the first PON component and the second PON component. The backup wireless link corresponds to a wireless backup system for the PON. The authentication information is associated with an identifier of the wireless backup system. Also included is a network component comprising a first passive optical network (PON) component configured to receive authentication information for a wireless backup system for a PON from a second PON component and compare the authentication information to expected authentication information at the first PON component to authorize a wireless link between the first PON component and the second PON component for the wireless backup system.Type: GrantFiled: April 19, 2011Date of Patent: November 10, 2015Assignee: Futurewei Technologies, Inc.Inventors: Michael Shaffer, Meng Sui, Wei Lin
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Patent number: 8953940Abstract: A method for time synchronization on a passive optical network is disclosed, including: an optical line terminal (OLT) receives clock information sent by a first optical network unit (ONU); the OLT adjusts local time of the OLT according to the clock information, to implement clock synchronization between the OLT and the first ONU; the OLT sends the clock information to a second ONU, to implement clock synchronization between the second ONU and the OLT. The OLT in an embodiment of the present invention does not need to obtain clock signals from an upper network and the clock information does not need to be transmitted in a multi-level mode over a packet network; therefore, the precision of ToD can be greatly increased.Type: GrantFiled: July 20, 2012Date of Patent: February 10, 2015Assignee: Huawei Technologies Co., Ltd.Inventor: Meng Sui
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Publication number: 20140362869Abstract: Embodiments of the present invention provide a network node transmission method, apparatus, and system. The method includes: receiving a downlink optical signal sent by an OLT, where the downlink optical signal is obtained through digital-to-analog conversion and electrical-to-optical conversion performed by the OLT on a first downlink multiplexing digital signal, and in the first downlink multiplexing digital signal, multiple customer premises equipments CPE correspond to respective OFDM symbol timeslots and/or subcarriers; and performing optical-to-electrical conversion and analog-to-digital conversion on the downlink optical signal to obtain a second downlink multiplexing digital signal, demultiplexing the second downlink multiplexing digital signal to obtain downlink OFDM symbols for each CPE of the multiple CPEs, and performing digital-to-analog conversion on the downlink OFDM symbols of each CPE to obtain a downlink analog signal of each CPE.Type: ApplicationFiled: March 6, 2014Publication date: December 11, 2014Applicant: Huawei Technologies Co., Ltd.Inventors: Zhong Pan, Meng Sui, Shicai Chen, Cao Shi
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Publication number: 20140348507Abstract: Embodiments of the present invention provide a method, an apparatus, and a system for processing an optical network signal. The method includes: receiving an optical signal sent by an optical line terminal, where the optical signal includes two polarization components perpendicular to each other, and downlink data is modulated on one of the polarization components; dividing the optical signal into two signals, where each signal is the optical signal; demodulating the downlink data from one optical signal and performing, for the other optical signal, vertical polarization rotation processing and processing of modulating uplink data onto two polarization components of the optical signal; sending the other optical signal on which the vertical polarization rotation processing and the uplink data modulation processing are performed to the optical line terminal. With the embodiments of the present invention, signal processing load of the optical network unit and the optical line terminal can be lowered.Type: ApplicationFiled: August 6, 2014Publication date: November 27, 2014Inventors: Lei Zhou, Guikai Peng, Meng Sui, Zhenping Wang, Ning Cheng
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Patent number: 8805201Abstract: A time synchronization method and a time synchronization device in a passive optical network (PON), and a PON are provided. The method includes receiving a synchronization packet sent after time synchronization of an optical line terminal (OLT) with a master clock (MC) is achieved, wherein the synchronization packet carries a timestamp TMt1i determined after the time synchronization of the OLT is achieved, adjusting a local clock according to the timestamp to achieve time synchronization of an optical network unit/optical network terminal (ONU/ONT) with the OLT, and after the time synchronization of the OLT is achieved, instructing an slave clock (SC) to perform time synchronization. A time synchronization device and a time synchronization system for implementing the method in a PON are further provided.Type: GrantFiled: July 30, 2012Date of Patent: August 12, 2014Assignee: Huawei Technologies Co., Ltd.Inventors: Jun Zhao, Sanzhong Li, Meng Sui
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Publication number: 20140186039Abstract: An optical line terminal (OLT) configured to receive transmission requests from a plurality of both network elements (NE) and customer premises equipment (CPE), allocate a timeslot to each NE for transmission on an optical distribution network (ODN), and a timeslot to each CPE for transmission on an electrical distribution network (EDN), wherein each NE intermediates between the OLT and the CPEs. Included is a NE configured to transmit a timeslot to a CPE for transmission on an EDN allocated by an OLT, receive data frames from the CPE during the timeslot, and forward the data frames to the OLT without rescheduling. Also included is a method comprising sending a transmission request to an OLT, receiving a timeslot from the OLT for transmission on an EDN in response, transmitting data frames to a NE during the timeslot, wherein the NE forwards the data frames to the OLT without rescheduling.Type: ApplicationFiled: May 17, 2013Publication date: July 3, 2014Applicant: Futurewei Technologies, Inc.Inventors: Yuanqiu Luo, Frank J. Effenberger, Meng Sui
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Publication number: 20130034356Abstract: A method implemented in an optical line terminal (OLT) for reducing adverse effects from a rogue optical network unit (ONU) in a passive optical network (PON), comprising determining with a processor that the rogue ONU is transmitting in violation of pre-specified parameters, and sending at least one message to a plurality of ONUs to change a transmitting wavelength from a first wavelength to a second wavelength.Type: ApplicationFiled: August 3, 2012Publication date: February 7, 2013Applicant: FUTUREWEI TECHNOLOGIES, INC.Inventors: Yuanqiu Luo, Meng Sui, Frank Effenberger
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Publication number: 20120288280Abstract: A method for time synchronization on a passive optical network is disclosed, including: an optical line terminal (OLT) receives clock information sent by a first optical network unit (ONU); the OLT adjusts local time of the OLT according to the clock information, to implement clock synchronization between the OLT and the first ONU; the OLT sends the clock information to a second ONU, to implement clock synchronization between the second ONU and the OLT. The OLT in an embodiment of the present invention does not need to obtain clock signals from an upper network and the clock information does not need to be transmitted in a multi-level mode over a packet network; therefore, the precision of ToD can be greatly increased.Type: ApplicationFiled: July 20, 2012Publication date: November 15, 2012Inventor: Meng Sui
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Publication number: 20110262129Abstract: An apparatus comprising a first passive optical network (PON) component configured to couple to a second PON component via an optical link and authenticate the second PON component based on authentication information to authorize a backup wireless link between the first PON component and the second PON component. The backup wireless link corresponds to a wireless backup system for the PON. The authentication information is associated with an identifier of the wireless backup system. Also included is a network component comprising a first passive optical network (PON) component configured to receive authentication information for a wireless backup system for a PON from a second PON component and compare the authentication information to expected authentication information at the first PON component to authorize a wireless link between the first PON component and the second PON component for the wireless backup system.Type: ApplicationFiled: April 19, 2011Publication date: October 27, 2011Applicant: FUTUREWEI TECHNOLOGIES, INC.Inventors: Michael Shaffer, Meng Sui, Wei Lin
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Patent number: 7741326Abstract: Compounds of formula I or formula II: or pharmaceutically acceptable salts thereof, wherein m, n, p, Ar R1, R2, R4, and R5 are as defined herein. The invention also provides methods for preparing, compositions comprising, and methods for using compounds.Type: GrantFiled: November 8, 2007Date of Patent: June 22, 2010Assignee: Roche Palo Alto LLCInventors: Joe Timothy Bamberg, Counde O'Yang, Meng Sui, Shu-Hai Zhao
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Publication number: 20090010642Abstract: A method for measuring fiber length, an optical line terminal and an optical network system. The method for measuring fiber length according to the embodiment of the present invention includes the following steps: Sending the first message to an optical network device at the subscriber side; —Receiving the second message, which is a response returned by the optical network device at the subscriber side to the first message; —Determining the duration between sending the first message and receiving the second message; Calculating the length of the fiber to the optical network device at the subscriber side according to the above-mentioned duration and the information related to the processing delay of the optical network device at the subscriber side, wherein the information related to the processing delay of the optical network device at the subscriber side includes the actual response time of the optical network device at the subscriber side.Type: ApplicationFiled: September 19, 2008Publication date: January 8, 2009Inventors: Meng Sui, Sulin Yang, Hai Gao, Feng Wang
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Publication number: 20080146587Abstract: Compounds of formula I or formula II: or pharmaceutically acceptable salts thereof, wherein m, n, p, Ar R1, R2, R4, and R5 are as defined herein. The invention also provides methods for preparing, compositions comprising, and methods for using compounds.Type: ApplicationFiled: November 8, 2007Publication date: June 19, 2008Inventors: Joe Timothy Bamberg, Counde O'Yang, Meng Sui, Shu-Hai Zhao
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Patent number: 7365063Abstract: Compounds of the formula I: and pharmaceutically acceptable salts thereof wherein X is N, Y is S, Z is —(CRaRb)r—, A is —NR3, m is 2, n is 1, q is 2, R2 is optioinally substituted aryl or optionally substituted heteroaryl, and p, R1, R3, R4, R5, R6, R7, R8, R9, and R10, are as defined herein. The invention also provides methods for preparing, compositions comprising, and methods for using compounds of formula I for treatment of central nervous system diseases.Type: GrantFiled: February 7, 2007Date of Patent: April 29, 2008Assignee: Roche Palo Alto LLCInventors: Nancy Elisabeth Krauss, Meng Sui, Shu-Hai Zhao
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Publication number: 20070149510Abstract: The invention provides compounds of the formula I: and pharmaceutically acceptable salts or prodrugs thereof, wherein m, n, p, q, X, Y, Z, A, R1, R2, R4, R5, R6, R7, R8, R9 and R10 are as defined herein. The invention also provides methods for preparing, compositions comprising, and methods for using compounds of formula I.Type: ApplicationFiled: February 7, 2007Publication date: June 28, 2007Inventors: Nancy Krauss, Meng Sui, Shu-Hai Zhao
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Patent number: 7196087Abstract: Compounds of the formula I: and pharmaceutically acceptable salts thereof, wherein X is CH or N, Y is C or S, Z is —(CRaRb)r— or —SO2—, A is —NR3— or —O—, R2 is optionally substituted aryl or optionally substituted heteroaryl, n is 1 or 2, m is 1 when Y is C and m is 2 when Y is S, and p, q, r, R1, R3, R4, R5, R6, R7, R8, R9, R10, Ra and Rb are as defined herein. The compounds are useful in the treatment of 5-HT6 and 5-HT2A mediated diseases.Type: GrantFiled: January 14, 2005Date of Patent: March 27, 2007Assignee: Roche Palo Alto LLCInventors: Nancy Elisabeth Krauss, Meng Sui, Shu-Hai Zhao
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Patent number: 7141562Abstract: Compound of the Formula: and pharmaceutically acceptable salts or prodrugs thereof, wherein: X is CH or N, Y is C or S, Z is —SO2— or —(CRaRb)r—, n is 1 or 2, R2 is aryl or heteroaryl, and R1, R3, R4, R5, R6, R7, R8, R9, Ra, Rb, m, p, q and r, are as defined herein. The compounds are modulators of the 5-HT6 receptor and are useful for treatment of central nervous system disorders. Also provided are methods for preparing, compositions comprising, and methods for using Compounds of Formula I.Type: GrantFiled: November 6, 2003Date of Patent: November 28, 2006Assignee: Roche Palo Alto LLCInventors: Hans Maag, Meng Sui, Shu-Hai Zhao