Patents by Inventor Kaibin Zhang
Kaibin 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).
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Patent number: 11632182Abstract: In the method, a first device receives a mixed signal including a target signal from a target device among a plurality of second devices and an interfering signal from the plurality of second devices. The first device determines a distribution characteristic of an amplitude of the mixed signal within an amplitude variation range, the distribution characteristic being associated with the target device and an interfering device generating the interfering signal. The first device determines the interfering device from the plurality of second devices based on the distribution characteristic. An interfering device in a communication system may be detected in real-time and accurately.Type: GrantFiled: January 19, 2021Date of Patent: April 18, 2023Assignee: Nokia Solutions and Networks OyInventors: Chenhui Ye, Xiaofeng Hu, Kaibin Zhang
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Patent number: 11516053Abstract: Embodiments of the present disclosure provide a method, device, and computer readable medium for channel equalization. The method comprises receiving, at a first device, a first signal from a second device via a plurality of subcarriers over a communication channel; sampling the first signal to obtain sampled symbols; and generating a second signal based on the obtained sampled symbols using a direct association between sampled symbols and payloads, the second signal indicating a payload of the first signal carried on an effective subcarrier of the plurality of subcarriers. Through the use of the direct association between sampled symbols and payloads, it is possible to achieve channel equalization in a less complicated, more reliable, and cost-effective manner, so as to extract the payload in the received signal.Type: GrantFiled: February 27, 2019Date of Patent: November 29, 2022Assignee: NOKIA SOLUTIONS AND NETWORKS OYInventors: Chenhui Ye, Xiaofeng Hu, Dongxu Zhang, Kaibin Zhang
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Patent number: 11356182Abstract: Embodiments of the present disclosure relate to a device, a method, an apparatus and a computer-readable medium for signal equalization. According to the embodiments of the present disclosure, a balance between equalization performance and effects is achieved by using a linear equalizer and a nonlinear equalizer. In addition, signals from different uplinks are equalized using adaptive parameters, to achieve optimal equalization of various signals.Type: GrantFiled: December 30, 2020Date of Patent: June 7, 2022Assignee: Nokia Solutions and Networks OyInventors: Chenhui Ye, Xiaofeng Hu, Kaibin Zhang
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Patent number: 11349570Abstract: Embodiments of the present disclosure relate to a method and apparatus for optical communication. For example, there is provided a method implemented at a passive optical network device configured to perform high-rate communication via a bandwidth-limited link. The method comprises: receiving, via the bandwidth-limited link, a training signal from an optical network unit; obtaining a delay signal by delay-sampling the training signal; determining, based on the delay signal, a first channel response of the bandwidth-limited link, the first channel response characterizing change of the training signal caused by the bandwidth-limited link; and compensating, based on the first channel response, a communication signal received via the bandwidth-limited link from the optical network unit, to reduce distortion of the communication signal. A corresponding apparatus is also disclosed.Type: GrantFiled: March 13, 2017Date of Patent: May 31, 2022Assignee: Alcatel LucentInventors: Chenhui Ye, Xiaofeng Hu, Kaibin Zhang
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Patent number: 11303482Abstract: Embodiments of the present disclosure provide a signal processing apparatus and method, a network device and a computer readable storage medium. The apparatus comprises: a receiving unit configured to receive a signal from a remote radio frequency unit (RRH), the RRH being independent from the signal processing apparatus; a processing unit configured to perform signal enhancement on the signal; and a transmitting unit configured to transmit the enhanced signal to a baseband unit (BBU). According to the present disclosure, it is possible to implement a fronthaul or anyhaul solution with a high reliability, and meanwhile save the RF transmission power of the terminal device and reduce the operation costs of the operators.Type: GrantFiled: October 24, 2018Date of Patent: April 12, 2022Assignee: Nokia Solutions and Networks OyInventors: Chenhui Ye, Dongxu Zhang, Kaibin Zhang
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Patent number: 11218384Abstract: A new interact procedure among a user equipment, an infrastructure provider, a virtual network operator and a corresponding access node and a corresponding access point is provided. Thus, the vWLAN can be created and deleted dynamically for the virtual network operator, such that the vWLAN of the virtual network operator can be utilized efficiently. Thereby, the virtual network operator can deploy its vWLANs in the hotspots dynamically according to the requirement. The flexibility is enhanced, while the requirement for the virtual network operator and actual subscription is met.Type: GrantFiled: May 30, 2016Date of Patent: January 4, 2022Assignee: Alcatel LucentInventors: Haibo Wen, Shuigen Yang, Kaibin Zhang
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Publication number: 20210226714Abstract: In the method, a first device receives a mixed signal including a target signal from a target device among a plurality of second devices and an interfering signal from the plurality of second devices. The first device determines a distribution characteristic of an amplitude of the mixed signal within an amplitude variation range, the distribution characteristic being associated with the target device and an interfering device generating the interfering signal. The first device determines the interfering device from the plurality of second devices based on the distribution characteristic. An interfering device in a communication system may be detected in real-time and accurately.Type: ApplicationFiled: January 19, 2021Publication date: July 22, 2021Applicant: Nokia Solutions and Networks OyInventors: Chenhui YE, Xiaofeng HU, Kaibin ZHANG
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Patent number: 11063670Abstract: Embodiments are disclosed of methods performed at an optical transmitter, devices and computer-readable storage media. For example, the method includes performing a process to select a PAM value from a set of candidate PAM values based on currently transmitted training data bits, transmitted Pulse Amplitude Modulation (PAM) values corresponding to previously transmitted training data bits, and training data bits to be transmitted subsequently, the selected PAM value corresponding to the currently transmitted training data bits. The selected PAM value is transmitted to an optical receiver, and an indication as to whether the optical receiver correctly detects the currently transmitted training data bits is received from the optical receiver. Then, the process is updated at least in part based on the indication. The manner of performing neural network learning at an optical transmitter side to obtain an encoding strategy can maximize the channel allowable capacity.Type: GrantFiled: December 11, 2019Date of Patent: July 13, 2021Assignee: Nokia Solutions and Networks OyInventors: Chenhui Ye, Xiaofeng Hu, Kaibin Zhang
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Publication number: 20210211205Abstract: Embodiments of the present disclosure relate to a device, a method, an apparatus and a computer-readable medium for signal equalization. According to the embodiments of the present disclosure, a balance between equalization performance and effects is achieved by using a linear equalizer and a nonlinear equalizer. In addition, signals from different uplinks are equalized using adaptive parameters, to achieve optimal equalization of various signals.Type: ApplicationFiled: December 30, 2020Publication date: July 8, 2021Applicant: Nokia Solutions and Networks OyInventors: Chenhui YE, Xiaofeng HU, Kaibin ZHANG
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Publication number: 20210176100Abstract: Embodiments of the present disclosure provide a signal processing apparatus and method, a network device and a computer readable storage medium. The apparatus comprises: a receiving unit configured to receive a signal from a remote radio frequency unit (RRH), the RRH being independent from the signal processing apparatus; a processing unit configured to perform signal enhancement on the signal; and a transmitting unit configured to transmit the enhanced signal to a baseband unit (BBU). According to the present disclosure, it is possible to implement a fronthaul or anyhaul solution with a high reliability, and meanwhile save the RF transmission power of the terminal device and reduce the operation costs of the operators.Type: ApplicationFiled: October 24, 2018Publication date: June 10, 2021Applicant: Nokia Solutions and Networks OYInventors: Chenhui Ye, Dongxu Zhang, Kaibin Zhang
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Patent number: 11032006Abstract: Embodiments of the present disclosure relate to a method, a device, an apparatus for optical communication and computer-readable medium. The method comprises receiving, at an optical line terminal, an access request from a first optical network unit; in accordance with a determination that the first optical network unit is not registered at the optical line terminal, obtaining a first parameter set from the first optical network unit, and updating an association relationship between a distorted signal received at the optical line terminal and an original signal recovered from the distorted signal, based on the first parameter set.Type: GrantFiled: July 20, 2020Date of Patent: June 8, 2021Assignee: Nokia Solutions and Networks OyInventors: Chenhui Ye, Xiaofeng Hu, Kaibin Zhang
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Publication number: 20210105548Abstract: Embodiments of the present disclosure relate to method, device and computer-readable medium for communication in a Passive Optical Network (PON). The method comprises receiving a first sequence from an Optical Network Unit (ONU) the first sequence being transmitted by using a reference sequence shared with the Optical Line Terminal (OLT) based on a first set of parameters associated with an uplink transmission from the ONU to the OLT; determining parameter adjustment information based on the first sequence and the reference sequence, the parameter adjustment information being used to adjust at least one parameter in the first set of parameters associated with the uplink transmission, to cause transmission property of the uplink to satisfy a predetermined condition; and transmitting the parameter adjustment information to the ONU.Type: ApplicationFiled: February 27, 2019Publication date: April 8, 2021Applicant: Nokia Solutions and Networks OyInventors: Chenhui Ye, Dongxu Zhang, Xiaofeng Hu, Kaibin Zhang
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Publication number: 20210091979Abstract: Embodiments of the present disclosure provide a method, device, and computer readable medium for channel equalization. The method comprises receiving, at a first device, a first signal from a second device via a plurality of subcarriers over a communication channel; sampling the first signal to obtain sampled symbols; and generating a second signal based on the obtained sampled symbols using a direct association between sampled symbols and payloads, the second signal indicating a payload of the first signal carried on an effective subcarrier of the plurality of subcarriers. Through the use of the direct association between sampled symbols and payloads, it is possible to achieve channel equalization in a less complicated, more reliable, and cost-effective manner, so as to extract the payload in the received signal.Type: ApplicationFiled: February 27, 2019Publication date: March 25, 2021Applicant: Nokia Solutions and Networks OyInventors: Chenhui Ye, Xiaofeng Hu, Dongxu Zhang, Kaibin Zhang
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Patent number: 10958651Abstract: The invention provides a method of providing a nomadic service, the method including: i. sending, by a user, a nomadic service request to an Authentication, Authorization and Accounting (AAA) server to determine whether the nomadic service request is allowed; ii. if the nomadic service request is allowed, then instantiating a service module for the nomadic service in a corresponding virtual Residential Gateway (vRG) platform, or selecting a corresponding service module in a residential gateway of the user, based upon the nomadic service, by a Software Defined Network (SDN) controller; and iii. determining and configuring, by the SDN controller, a network delivery path between the user and the service module based upon the path establishment request and a position of the service module. With the technical solution according to the invention, even a user who is not at home can be provided rapidly with a service subscribed through a residential gateway.Type: GrantFiled: October 19, 2015Date of Patent: March 23, 2021Assignee: Alcatel LucentInventors: Haibo Wen, Kaibin Zhang, Shuigen Yang, Fanxiang Bin
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Patent number: 10938501Abstract: Embodiments of the present disclosure provide a method and device of signal processing in optical fiber communication systems. The method includes dividing electrical signals for a plurality of receivers in the optical fiber communication system into a plurality of groups, the plurality of groups each being associated with at least one of the plurality of receivers. The method also includes obtaining time-domain multiplexed signals by multiplexing the electrical signals in the plurality of groups in time domain. The method also includes multiplexing the time-domain multiplexed signals in the plurality of groups in frequency domain such that the time-domain multiplexed signals occupy respective sub-bands of a transmission bandwidth for the optical fiber communication system. The method also includes converting the frequency-domain multiplexed signals into analog optical signals for transmission.Type: GrantFiled: March 13, 2017Date of Patent: March 2, 2021Assignee: Alcatel LucentInventors: Chenhui Ye, Xiaofeng Hu, Kaibin Zhang
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Publication number: 20210021346Abstract: Embodiments of the present disclosure relate to a method, a device, an apparatus for optical communication and computer-readable medium. The method comprises receiving, at an optical line terminal, an access request from a first optical network unit; in accordance with a determination that the first optical network unit is not registered at the optical line terminal, obtaining a first parameter set from the first optical network unit, and updating an association relationship between a distorted signal received at the optical line terminal and an original signal recovered from the distorted signal, based on the first parameter set.Type: ApplicationFiled: July 20, 2020Publication date: January 21, 2021Applicant: Nokia Solutions and Networks OyInventors: Chenhui Ye, Xiaofeng Hu, Kaibin Zhang
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Patent number: 10763965Abstract: A wireless access system includes a baseband processing unit pool, an optical network unit and a remote radio head. The BBU pool may be connected to one or more ONUs, each of the ONUs may be connected to one or more RRHs, and the connection between each of the ONUs and the one or more RRHs may be implemented using a twisted pair. Embodiments can provide access, convergence and transport with a very large capacity from indoor antenna units to a centralized BBU as well as an easy installation, and thus they are cost economical for a large scale deployment of indoor wireless access. Furthermore, advanced wireless technologies, such as large scale MIMO and CoMP, can be supported.Type: GrantFiled: September 26, 2016Date of Patent: September 1, 2020Assignee: Alcatel LucentInventors: Chenhui Ye, Xiaofeng Hu, Kaibin Zhang
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Publication number: 20200266914Abstract: Embodiments of the present disclosure provide a method and device of signal processing in optical fiber communication systems. The method includes dividing electrical signals for a plurality of receivers in the optical fiber communication system into a plurality of groups, the plurality of groups each being associated with at least one of the plurality of receivers. The method also includes obtaining time-domain multiplexed signals by multiplexing the electrical signals in the plurality of groups in time domain The method also includes multiplexing the time-domain multiplexed signals in the plurality of groups in frequency domain such that the time-domain multiplexed signals occupy respective sub-bands of a transmission bandwidth for the optical fiber communication system. The method also includes converting the frequency-domain multiplexed signals into analog optical signals for transmission.Type: ApplicationFiled: March 13, 2017Publication date: August 20, 2020Applicant: Alcatel LucentInventors: Chenhui YE, Xiaofeng HU, Kaibin ZHANG
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Publication number: 20200195353Abstract: Embodiments are disclosed of methods performed at an optical transmitter, devices and computer-readable storage media. For example, the method includes performing a process to select a PAM value from a set of candidate PAM values based on currently transmitted training data bits, transmitted Pulse Amplitude Modulation (PAM) values corresponding to previously transmitted training data bits, and training data bits to be transmitted subsequently, the selected PAM value corresponding to the currently transmitted training data bits. The selected PAM value is transmitted to an optical receiver, and an indication as to whether the optical receiver correctly detects the currently transmitted training data bits is received from the optical receiver. Then, the process is updated at least in part based on the indication. The manner of performing neural network learning at an optical transmitter side to obtain an encoding strategy can maximize the channel allowable capacity.Type: ApplicationFiled: December 11, 2019Publication date: June 18, 2020Inventors: Chenhui YE, Xiaofeng HU, Kaibin ZHANG
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Patent number: 10270556Abstract: The present disclosure discloses a method and an apparatus for hybrid multiplexing/de-multiplexing in a passive optical network, the method comprising steps of: dividing N first intermediate frequency sub-bands averagely into M clusters, wherein each of the clusters contains K first intermediate frequency sub bands and N=M*K, and wherein each of the K first intermediate frequency sub-bands carries a baseband digital electrical signal; selecting, by a software defined first intermediate frequency multiplexer, the baseband digital electrical signals of K first intermediate frequency sub-bands from the N first intermediate frequency sub-bands for software defined frequency division multiplexing and forming a cluster; and frequency division multiplexing, by an analog hardware cluster multiplexer, analog electrical signals of the M clusters on a second intermediate frequency sub-band.Type: GrantFiled: March 3, 2016Date of Patent: April 23, 2019Assignee: Alcatel LucentInventors: Chenhui Ye, Kaibin Zhang