Patents by Inventor Xuyong Wu

Xuyong Wu 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).

  • Patent number: 10135602
    Abstract: The present invention provides a method, an apparatus, and a system for time synchronization of an xDSL. The method includes: transmitting, by a customer premises equipment, a first symbol to a central office equipment, and obtaining time Ts2 indicating the moment that the first symbol is transmitted; receiving, by the CPE, a second symbol transmitted by the CO, and obtaining time Ts1 indicating the moment that the second symbol is received; obtaining, by the CPE obtains time Tm2 indicating the moment that the first symbol is received by the CO and time Tm1 indicating the moment that the second symbol is transmitted by the CO; the CPE calculates an offset between a clock of the CPE and a clock of the CO according to Ts1, Ts2, Tm1 and Tm2; and the CPE adjusts the clock of the CPE according to the offset to achieve synchronization.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: November 20, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Guijin Xu, Guozhu Long, Ruijie Xiao, Zhilei Zhao, Xuyong Wu, Yuchen Jia
  • Patent number: 8547925
    Abstract: A transmission method includes: confirming a reference time; according to the bit property of the data to be transmitted and the reference time, inserting the time slice signal into a special time position of a data frame; transmitting the data frame in which the time slice signal has been inserted and the time slice signal. And a method for realizing information transmission includes: according to the information unit to be transmitted, the transmitter sets the time parameters of the signal transmission during a special time period; the receiver receives the information unit according to the property of the received signal in a determined time period. This invention also provides a transmission system, a transmitter and a receiver. This invention can transmit signaling and messages among multiple systems, in order to solve the signaling interaction problem in the processes of coexisting negotiation and quick switching of the multi-mode terminal in a multi-system or a mixed type network.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: October 1, 2013
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Xuyong Wu
  • Patent number: 8494524
    Abstract: A method and a system for collecting interference status information of a subscriber station by a coexistence base station includes: during an initialization process of a neighbor base station, after a broadcast contact message containing contact information received from the neighbor base station, a subscriber station in an overlapping area of the neighbor base station and a coexistence base station sending a report message to the coexistence base station, wherein the report massage comprises interference status information of the subscriber station, and the coexistence base station is a serving base station of the subscriber station; and collecting and saving, by the coexistence base station, the interference status information of the subscriber station according to the report message.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: July 23, 2013
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Xuyong Wu
  • Patent number: 8442175
    Abstract: The present invention provides a method, an apparatus, and a system for time synchronization of an xDigital Subscriber Line (xDSL). The method includes: transmitting, by a customer premises equipment (CPE), a first symbol to a central office (CO) equipment, and obtaining time Ts2 indicating the moment that the first symbol is transmitted; receiving, by the CPE, a second symbol transmitted by the CO, and obtaining time Ts1 indicating the moment that the second symbol is received; obtaining, by the CPE obtains time Tm2 indicating the moment that the first symbol is received by the CO and time Tm1 indicating the moment that the second symbol is transmitted by the CO; the CPE calculates an offset between a clock of the CPE and a clock of the CO according to Ts1, Ts2, Tm1, Tm2 and a delay of the CPE; and the CPE adjusts the clock of the CPE according to the offset to achieve synchronization.
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: May 14, 2013
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Guijin Xu, Guozhu Long, Ruijie Xiao, Zhilei Zhao, Xuyong Wu, Yuchen Jia
  • Patent number: 8280370
    Abstract: A method for detecting a neighboring BS interference is provided. The method includes the following steps. A base station (BS) informs a coexistence signaling interval information to a subscriber station (SS) in a wireless access system. The SS obtains a silent period in a coexistence signaling interval from the coexistence signaling interval information, and monitors an interference information from a neighboring BS during the silent period. The SS reports the monitored interference information to the BS. A device for detecting a neighboring BS interference, a method for identifying an interferential neighboring BS and a device thereof are further provided. The problem of resource conflict raised when two BSs which originally are not neighboring BSs become neighboring BSs because of changes of a SS's status, or SS's position and environmental conditions, is solved.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: October 2, 2012
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xuyong Wu, Zhong Pan
  • Patent number: 8107969
    Abstract: A method and system of channel negotiation between neighbor BSs are provided. The method includes: a first BS obtaining channel information of all second BSs which neighboring to the first BS in response to starting of the first BS; selecting a channel in the network as a first working channel of the first BS, and requesting all third BSs which are the second BSs occupying the first working channel to switch channel; and determining another channel for each of the third BSs excluding the first working channel as the target channel of the third BS, and switching the working channel of the third BS to the target channel, then occupying the first working channel. The method and system of channel negotiation between neighbor BSs adjust channels between neighbor BSs by negotiation automatically, and resource distribution for the whole network is optimized.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: January 31, 2012
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xuyong Wu, Zhong Pan, Quanbo Zhao
  • Publication number: 20110274149
    Abstract: The present invention provides a method, an apparatus, and a system for time synchronization of an xDigital Subscriber Line (xDSL). The method includes: transmitting, by a customer premises equipment (CPE), a first symbol to a central office (CO) equipment, and obtaining time Ts2 indicating the moment that the first symbol is transmitted; receiving, by the CPE, a second symbol transmitted by the CO, and obtaining time Ts1 indicating the moment that the second symbol is received; obtaining, by the CPE obtains time Tm2 indicating the moment that the first symbol is received by the CO and time Tm1 indicating the moment that the second symbol is transmitted by the CO; the CPE calculates an offset between a clock of the CPE and a clock of the CO according to Ts1, Ts2, Tm1, Tm2 and a delay of the CPE; and the CPE adjusts the clock of the CPE according to the offset to achieve synchronization.
    Type: Application
    Filed: July 15, 2011
    Publication date: November 10, 2011
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Guijin Xu, Guozhu Long, Ruijie Xiao, Zhilei Zhao, Xuyong Wu, Yuchen Jia
  • Patent number: 8014785
    Abstract: Method, and system for collecting and reporting interference source information, the method includes: each terminal receives broadcast message containing NBS identification information sent by NBS when initializing, terminals which can demodulate and check accurately contain the broadcast message and receiving time information in interfered reporting message and send the interfered reporting message to the operating base station OBS, and terminals which can't demodulate and check in error contain receiving time information in reporting message; OBS records the receiving time information reported by each terminal, and records the NBS identification information contained in the broadcast message reported by terminals which check accurately as the interference source of the terminals which report the broadcast message; then, searches and records the interference sources for the other terminals from the recorded interference sources according to the relationship between the receiving time information.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: September 6, 2011
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Quanbo Zhao, Zhong Pan, Xuyong Wu
  • Patent number: 8005109
    Abstract: A method and a network apparatus for adjusting communication resources in a community are disclosed. When the topological structure of the community changes, e.g., when new base station joins or exits, and when the community combines or splits, each base station re-allocates the communication resources by using a uniform algorithm, or the server or one base station in the community re-allocates the communication resources uniformly, then the base stations in the community are adjusted to the their own available resource at the same time based on the re-allocation results. The communication resources includes not only the frequency spectrum, but also those are exclusively occupied by a base station required by its normal operation, e.g., time slot, CDMA code word, sub-channel etc. With the present disclosure, the automatic optimum allocation and adjustment of the communication resources in a community could be realized.
    Type: Grant
    Filed: May 2, 2008
    Date of Patent: August 23, 2011
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xuyong Wu, Zhong Pan, Quanbo Zhao
  • Publication number: 20100271998
    Abstract: A wireless system sleep method, a terminal and a base station are disclosed herein. The method includes the following steps: determining, by a Base Station, an availability interval and an unavailability interval of a sleep mode for a terminal, where the availability interval and the unavailability interval are both in subframes; and scheduling, by the BS, the availability interval and the unavailability interval for the terminal. The present invention is applicable to the wireless communication field.
    Type: Application
    Filed: July 7, 2010
    Publication date: October 28, 2010
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Lei Jin, Xuyong Wu, Juejun Liu
  • Patent number: 7720088
    Abstract: A method for TDM data transport is disclosed. Configure a TDM logical port in the transmitting and receiving side respectively, and create a relationship between the TDM logical port of the transmitting side and that of the receiving side. When transmitting the TDM data, map original TDM data to a package data format via the TDM logical port. Encapsulate the acquired package data and a CID into a MAC data package according to the predetermined encapsulation information. Then send the data package to the receiving side via a shared transmission channel. The receiving side MAC layer obtains the de-encapsulation information and the receiving side TDM logical port identifier according to the CID of the received data package, de-encapsulates the data package, maps the acquired data to the corresponding receiving side TDM logical port to implement high efficiency TDM data transport.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: May 18, 2010
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Xuyong Wu
  • Publication number: 20090257424
    Abstract: A transmission method includes: confirming a reference time; according to the bit property of the data to be transmitted and the reference time, inserting the time slice signal into a special time position of a data frame; transmitting the data frame in which the time slice signal has been inserted and the time slice signal. And a method for realizing information transmission includes: according to the information unit to be transmitted, the transmitter sets the time parameters of the signal transmission during a special time period; the receiver receives the information unit according to the property of the received signal in a determined time period. This invention also provides a transmission system, a transmitter and a receiver. This invention can transmit signaling and messages among multiple systems, in order to solve the signaling interaction problem in the processes of coexisting negotiation and quick switching of the multi-mode terminal in a multi-system or a mixed type network.
    Type: Application
    Filed: June 19, 2009
    Publication date: October 15, 2009
    Applicant: Huawei Technologies Co., Ltd.
    Inventor: Xuyong Wu
  • Publication number: 20090186609
    Abstract: A method for detecting a neighboring BS interference is provided. The method includes the following steps. A base station (BS) informs a coexistence signaling interval information to a subscriber station (SS) in a wireless access system. The SS obtains a silent period in a coexistence signaling interval from the coexistence signaling interval information, and monitors an interference information from a neighboring BS during the silent period. The SS reports the monitored interference information to the BS. A device for detecting a neighboring BS interference, a method for identifying an interferential neighboring BS and a device thereof are further provided. The problem of resource conflict raised when two BSs which originally are not neighboring BSs become neighboring BSs because of changes of a SS's status, or SS's position and environmental conditions, is solved.
    Type: Application
    Filed: April 1, 2009
    Publication date: July 23, 2009
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Xuyong Wu, Zhong Pan
  • Publication number: 20090044280
    Abstract: A proxy server having proxy server address information is provided to serve as an agent for at least one base station to perform secure communication. A method for realizing proxy and secure communication system are also provided to prevent the change of network address allocation from interfering main services of a base station. In addition, a secure communication method between license-exempt devices is provided to ensure the license-exempt devices not to be attacked and to remain at normal work. In the present invention, the network address of a base station is only restricted in a trusted range instead of being broadcasted in a public network, thus reducing the probability of attack to the base station in a wired network.
    Type: Application
    Filed: August 28, 2008
    Publication date: February 12, 2009
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xuyong WU, Zhong PAN, Quanbo ZHAO
  • Publication number: 20080268858
    Abstract: A method and system of channel negotiation between neighbor BSs are provided. The method includes: a first BS obtaining channel information of all second BSs which neighboring to the first BS in response to starting of the first BS; selecting a channel in the network as a first working channel of the first BS, and requesting all third BSs which are the second BSs occupying the first working channel to switch channel; and determining another channel for each of the third BSs excluding the first working channel as the target channel of the third BS, and switching the working channel of the third BS to the target channel, then occupying the first working channel. The method and system of channel negotiation between neighbor BSs adjust channels between neighbor BSs by negotiation automatically, and resource distribution for the whole network is optimized.
    Type: Application
    Filed: July 9, 2008
    Publication date: October 30, 2008
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xuyong WU, Zhong PAN, Quanbo ZHAO
  • Publication number: 20080198798
    Abstract: A method and a network apparatus for adjusting communication resources in a community are disclosed. When the topological structure of the community changes, e.g., when new base station joins or exits, and when the community combines or splits, each base station re-allocates the communication resources by using a uniform algorithm, or the server or one base station in the community re-allocates the communication resources uniformly, then the base stations in the community are adjusted to the their own available resource at the same time based on the re-allocation results. The communication resources includes not only the frequency spectrum, but also those are exclusively occupied by a base station required by its normal operation, e.g., time slot, CDMA code word, sub-channel etc. With the present disclosure, the automatic optimum allocation and adjustment of the communication resources in a community could be realized.
    Type: Application
    Filed: May 2, 2008
    Publication date: August 21, 2008
    Inventors: Xuyong Wu, Zhong Pan, Quanbo Zhao
  • Publication number: 20080170648
    Abstract: A method, wireless device and wireless communication system for implementing information transfer between wireless devices includes a wireless device of the sending party that carries information with a small amount of data (such as address information in an energy keying pulse (energy pulse) sequence) and sends the information to a receiving party in a periodic time interval. A wireless device of the receiving party obtains the information by monitoring and identifying the energy keying pulse sequence. Some time periods may be selected and used to send some information with a small amount of data to other wireless devices in the coverage area via energy keying pulses, so that the information may be correctly received.
    Type: Application
    Filed: March 5, 2008
    Publication date: July 17, 2008
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventor: Xuyong Wu
  • Publication number: 20080161009
    Abstract: Method, and system for collecting and reporting interference source information, the method includes: each terminal receives broadcast message containing NBS identification information sent by NBS when initializing, terminals which can demodulate and check accurately contain the broadcast message and receiving time information in interfered reporting message and send the interfered reporting message to the operating base station OBS, and terminals which can't demodulate and check in error contain receiving time information in reporting message; OBS records the receiving time information reported by each terminal, and records the NBS identification information contained in the broadcast message reported by terminals which check accurately as the interference source of the terminals which report the broadcast message; then, searches and records the interference sources for the other terminals from the recorded interference sources according to the relationship between the receiving time information.
    Type: Application
    Filed: March 14, 2008
    Publication date: July 3, 2008
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Quanbo ZHAO, Zhong PAN, Xuyong WU
  • Publication number: 20080146227
    Abstract: A method and a system for collecting interference status information of a subscriber station by a coexistence base station includes: during an initialization process of a neighbor base station, after a broadcast contact message containing contact information received from the neighbor base station, a subscriber station in an overlapping area of the neighbor base station and a coexistence base station sending a report message to the coexistence base station, wherein the report massage comprises interference status information of the subscriber station, and the coexistence base station is a serving base station of the subscriber station; and collecting and saving, by the coexistence base station, the interference status information of the subscriber station according to the report message.
    Type: Application
    Filed: February 29, 2008
    Publication date: June 19, 2008
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventor: Xuyong WU
  • Publication number: 20080069148
    Abstract: A method for TDM data transport is disclosed. Configure a TDM logical port in the transmitting and receiving side respectively, and create a relationship between the TDM logical port of the transmitting side and that of the receiving side. When transmitting the TDM data, map original TDM data to a package data format via the TDM logical port. Encapsulate the acquired package data and a CID into a MAC data package according to the predetermined encapsulation information. Then send the data package to the receiving side via a shared transmission channel. The receiving side MAC layer obtains the de-encapsulation information and the receiving side TDM logical port identifier according to the CID of the received data package, de-encapsulates the data package, maps the acquired data to the corresponding receiving side TDM logical port to implement high efficiency TDM data transport.
    Type: Application
    Filed: April 28, 2006
    Publication date: March 20, 2008
    Applicant: Huawei Technologies Co., Ltd.
    Inventor: Xuyong Wu