Patents by Inventor Guojun Xiao

Guojun Xiao 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: 9912398
    Abstract: A configuration method, detection method and equipment for control channels of a relay system are provided in the present invention. The configuration method comprises: the network side transmits a Relay-Physical Downlink Control Channel (R-PDCCH) of a control channel to its service relay equipment, the related control information of said relay equipment is included in said R-PDCCH, said R-PDCCH is a dedicated R-PDCCH of said relay equipment. In the present invention, the dedicated control channel of the relay system is configured according to the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols occupied by a R-PDCCH, and the mapping from a R-PDDCH/Relay-Physical Downlink Shared Channel (R-PDSCH) to a Resource Element (RE), and the demand that one relay node dedicates a R-PDCCH is satisfied.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: March 6, 2018
    Assignee: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Zukang Shen, Xueming Pan, Guojun Xiao, Libo Wang, Wenjian Zhang
  • Patent number: 9794945
    Abstract: Provided are a method, a system, and a device for confirming an uplink-downlink configuration, for use in confirming via interference detection whether or not a cell is capable of conducting independently the uplink-downlink configuration. The method comprises: a network side device confirming the value of an interference parameter of a target cell (201); on the basis of the value of the interference parameter of the target cell, the network side device confirming whether or not the target cell is capable of conducting autonomously the uplink-downlink configuration (202). Employment of the present invention allows for the normal operation of a dynamic uplink-downlink configuration, reduced interference between adjacent cells in a dynamic uplink-downlink configuration environment, and improved system efficiency.
    Type: Grant
    Filed: November 25, 2011
    Date of Patent: October 17, 2017
    Assignee: Datang Mobile Communications Equipment Co., Ltd
    Inventors: Xueming Pan, Shaohui Sun, Guojun Xiao, Fei Qin, Zukang Shen, Yu Ding
  • Patent number: 9763236
    Abstract: The present invention discloses a method, system and device for determining a bandwidth of an uplink sounding reference signal SRS. The method for determining the bandwidth of the uplink SRS comprises the following steps: determining whether SRS is transmitted with the uplink pilot time slot if the SRS is transmitted with the largest bandwidth level; transmitting SRS with the non-extensive SRS bandwidth if SRS is determined to be transmitted with the uplink pilot time slot and the UE reaches the power limit. In the present invention, the signal-to-noise ratio detected on the bandwidth with which SRS transmitted can be maintained, and the accurate detection of the channel information is thereby realized.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: September 12, 2017
    Assignee: China Academy of Telecommuications Technology
    Inventors: Xueming Pan, Guojun Xiao, Shiqiang Suo, Yu Ding
  • Patent number: 9698936
    Abstract: The embodiments of the present invention disclose a configuration method, system and device for an uplink channel. The method includes: The terminal achieve the information the network side device sending of carrying uplink transmission mode, and use the transmission mode transfer uplink signal; the terminal obtains the channel quality information according to the uplink transmission mode; the channel quality information the terminal obtained report to the network side device, as well as enables the network side device configures the uplink channel according to the channel quality information. The present invention performs the configuration of uplink channels in multicarrier transmission.
    Type: Grant
    Filed: August 17, 2010
    Date of Patent: July 4, 2017
    Assignee: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Xueming Pan, Guojun Xiao
  • Patent number: 9596052
    Abstract: The present application relates to the field of wireless communications, and in particular, to an indication method and device for a modulation coding scheme. It is for solving the problem that in an existing LTE/LTE-A system, a higher-order modulation scheme cannot be supported, thereby limiting the further improvement of throughput in an application scenario of a high signal-to-noise ratio. The method of the embodiments of the present application includes: according to the channel quality and a first MCS table, a network side determining an MCS level corresponding to a channel scheduled for a UE; and by means of first indication information, notifying the UE of the determined MCS level, so as to indicate to the UE to determine a modulation scheme and code rate for the channel scheduled therefor according to the MCS grade, wherein there are at least corresponding entries of MCS indexes and TBS indexes corresponding to modulation schemes at higher modulation orders than 6 in the first MCS table.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: March 14, 2017
    Assignee: China Academy of Telecommunications Technology
    Inventors: Xueming Pan, Zukang Shen, Jing Xu, Guojun Xiao
  • Patent number: 9554288
    Abstract: Embodiments of the present invention relate to the technical field of wireless communication, and relate particularly to a method, a system, and a device for confirming an uplink-downlink configuration, for use in confirming via interference detection whether or not a cell is capable of conducting independently the uplink-downlink configuration. The method of the embodiments of the present invention comprises: a network side device confirming the receipt of a first RSRP value of a reference signal from a second cell by a first cell, the second cell being an adjacent cell of the first cell (201); on the basis of the first RSRP value, the network side device confirming whether or not the first cell is capable of conducting autonomously the uplink-downlink configuration (202).
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: January 24, 2017
    Assignee: Datang Mobile Communications Equipment Co., Ltd
    Inventors: Xueming Pan, Shaohui Sun, Guojun Xiao, Fei Qin, Zukang Shen, Yu Ding
  • Patent number: 9516583
    Abstract: A method and device for acquiring user equipment duplex mode information are disclosed by the present invention, wherein, the method includes: the user equipment establishes a radio resource control connection with a base station, and reports the user equipment duplex mode information when establishing the radio resource control connection. With the technical scheme provided in the embodiments of the present invention, the network side acquires the duplex mode of the user equipment.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: December 6, 2016
    Assignee: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Xueming Pan, Jinling Hu, Guojun Xiao, Jie Zhang, Libo Wang, Deshan Miao, Yu Yang
  • Patent number: 9516644
    Abstract: The embodiments of the present invention relate to a method for resource allocation of backhaul link control channel information and a device therefor. Upon application of technical solutions proposed by embodiments of the present invention and based on the condition of introducing the DMRS and CSI-RS, remaining REs which are not occupied by the CSI-RS and/or the DM-RS in an OFDM symbol is configured to constitute an REG, which is used to transmit or discard the backhaul link control channel information. Thus without much improvement on the existing LTE system specification, a resource allocation scheme of the backhaul link control channel information in corresponding physical resource blocks has been proposed, which accommodates for both simple specification design and full utilization on resources, and realizes flexible design and allocation in light of demands of the real system.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: December 6, 2016
    Assignee: China Academy Of Telecommunications Technology
    Inventors: Xueming Pan, Keke Liu, Zukang Shen, Libo Wang, Guojun Xiao
  • Patent number: 9398584
    Abstract: The disclosure provides a method of configuring sounding reference signal (SRS) for coordinated multi-point (CoMP) transmission. The method may include: determining for a CoMP UE in the cell set B a first SRS resource orthogonal with SRS resources configured for other UEs in the cell set A by exchanging information among cells within the cell set B; transmitting to the CoMP UE SRS configuration information describing the first SRS resource. The disclosure also provides apparatuses for configuring SRS of CoMP transmission.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: July 19, 2016
    Assignee: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Zukang Shen, Qiubin Gao, Guojun Xiao, Deshan Miu, Xueming Pan
  • Patent number: 9198159
    Abstract: The present invention discloses a transmission method and apparatus for non-periodic SRS. eNB configures time-domain configuration parameter of non-periodic SRS through higher layer signalling or downlink physical control channel signalling; terminal equipment transmits non-periodic SRS in indicated time-domain resource. The application of the technical solution of the embodiments of the present invention can reduce signalling consumption through high layer semi-static configuration of time-domain resource of non-periodic SRS. On one hand, flexible non-periodic SRS time-domain transmission is allowed for terminal equipment which can send non-periodic SRS in multiple subframes, which is featured by low sounding delay and great sounding bandwidth; on the other hand, flexible timing mode is also permitted for terminal equipment which brings little restriction to scheduling.
    Type: Grant
    Filed: May 17, 2011
    Date of Patent: November 24, 2015
    Assignee: China Academy of Telecommunications Technology
    Inventors: Wenhong Chen, Rakesh Tamrakar, Guojun Xiao
  • Publication number: 20150327256
    Abstract: The present invention discloses a method, system and device for determining a bandwidth of an uplink sounding reference signal SRS. The method for determining the bandwidth of the uplink SRS comprises the following steps: determining whether SRS is transmitted with the uplink pilot time slot if the SRS is transmitted with the largest bandwidth level; transmitting SRS with the non-extensive SRS bandwidth if SRS is determined to be transmitted with the uplink pilot time slot and the UE reaches the power limit. In the present invention, the signal-to-noise ratio detected on the bandwidth with which SRS transmitted can be maintained, and the accurate detection of the channel information is thereby realized.
    Type: Application
    Filed: July 21, 2015
    Publication date: November 12, 2015
    Inventors: Xueming Pan, Guojun Xiao, Shiqiang Suo, Yu Ding
  • Patent number: 9172516
    Abstract: A method, apparatus and system for downlink pilot transmission solve the problem of power differences among OFDM symbols caused by Walsh Codes. The transmission method is that dedicated pilots are transmitted in the manner of code division multiplexing (CDM) or hybrid of CDM and frequency division multiplexing (FDM), wherein the dedicated pilots are configured with orthogonal sequence sets according to a preset frequency-domain granularity and rules on the resources for transmitting the dedicated pilots, and the same orthogonal sequence set is employed for the dedicated pilots in each frequency-domain granularity.
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: October 27, 2015
    Assignee: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Jing Xu, Deshan Miao, Shaohui Sun, Yu Ding, Guojun Xiao, Jun Chen
  • Patent number: 9148209
    Abstract: A transmission method for uplink control channel is provided, and the method comprises the following steps: a base station configures a transmission mode for the uplink control channel of a user equipment (UE) via high signaling; according to the transmission mode, the base station receives the uplink control channel sent by the UE via a transmit diversity or a single antenna port. A device for implementing the transmission for uplink control channel is also provided. With the present solution, according to the operation state of the system the base station flexibly configures the UE having multiple transmitting antennas to transfer uplink control channel by using different modes, so as to improve the reliability and efficiency of the system and enhance the performance of the system effectively.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: September 29, 2015
    Assignee: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Yanan Lin, Xueming Pan, Guojun Xiao
  • Patent number: 9137003
    Abstract: The present invention discloses a transmission method with multi-carrier aggregation, which includes: performing uplink and downlink configurations for each of the component carriers aggregated in a cell and ensuring coexistence of at least one identical uplink sub-frame and at least one identical downlink sub-frame between at least two of the component carriers and compliance of the configuration of at least one of the component carriers with an uplink and downlink configuration of R8; and transmitting the uplink and downlink configuration of any one of the component carriers and those of the other component carriers aggregated with the any one component carrier to an LTE-A UE accessing the corresponding component carrier. The invention further provides a transmission device with multi-carrier aggregation. With the invention, uplink and downlink configurations in an LTE-A system can be performed to accommodate a demand of a TDD system.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: September 15, 2015
    Assignee: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Xueming Pan, Guojun Xiao, Yu Ding, Shiqiang Suo, Shaohui Sun
  • Patent number: 9125205
    Abstract: The present invention discloses a method, system and device for determining a bandwidth of an uplink sounding reference signal SRS. The method for determining the bandwidth of the uplink SRS comprises the following steps: determining whether SRS is transmitted with the uplink pilot time slot if the SRS is transmitted with the largest bandwidth level; transmitting SRS with the non-extensive SRS bandwidth if SRS is determined to be transmitted with the uplink pilot time slot and the UE reaches the power limit. In the present invention, the signal-to-noise ratio detected on the bandwidth with which SRS transmitted can be maintained, and the accurate detection of the channel information is thereby realized.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: September 1, 2015
    Assignee: China Academy of Telecommunications Technology
    Inventors: Xueming Pan, Guojun Xiao, Shiqiang Suo, Yu Ding
  • Patent number: 9119205
    Abstract: The present application relates to of the communication field and discloses a method, device and system for implementing frequency point switch based on CR. The method comprises: determining, by a cognitive base station, a candidate working frequency point for UE deployed in a cognitive frequency band; then sending to the UE broadcast information which at least carries the candidate working frequency point and instructing the UE to switch from the working frequency point currently used thereby to the candidate working frequency point by way of a frequency point switching command. In this way, the UE deployed in the cognitive frequency band can achieve frequency point switch quickly and accurately according to the instruction from the cognitive base station when an incumbent user accesses the working frequency point currently used by the UE, effectively avoiding interference to the incumbent user and thereby ensuring the service performance and service continuity of the system.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: August 25, 2015
    Assignee: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Libo Wang, Jinling Hu, Guojun Xiao, Yu Yang, Wenling Bai, Xueming Pan, Qiubin Gao, Chenggang Jiang
  • Publication number: 20150200746
    Abstract: The present application relates to the field of wireless communications, and in particular, to an indication method and device for a modulation coding scheme. It is for solving the problem that in an existing LTE/LTE-A system, a higher-order modulation scheme cannot be supported, thereby limiting the further improvement of throughput in an application scenario of a high signal-to-noise ratio. The method of the embodiments of the present application includes: according to the channel quality and a first MCS table, a network side determining an MCS level corresponding to a channel scheduled for a UE; and by means of first indication information, notifying the UE of the determined MCS level, so as to indicate to the UE to determine a modulation scheme and code rate for the channel scheduled therefor according to the MCS grade, wherein there are at least corresponding entries of MCS indexes and TBS indexes corresponding to modulation schemes at higher modulation orders than 6 in the first MCS table.
    Type: Application
    Filed: July 26, 2013
    Publication date: July 16, 2015
    Applicant: China Academy of Telecomunications Technology
    Inventors: Xueming Pan, Zukang Shen, Jing Xu, Guojun Xiao
  • Patent number: 9077495
    Abstract: The present invention discloses a method on a Long Term Evolution-Advanced (LTE-A) system backhaul link for demodulation pilot transmission, wherein the method includes that: among the resource areas occupied by a Relay-Physical Downlink Shared Channel (R-PDSCH) on the backhaul link, a base station selects the resource units which are preconfigured for sending the demodulation pilot signal of the R-PDSCH; the base station sends the demodulation pilot signal to a Relay Node (RN) belonging to the base station by using the selected resource units. The present invention also discloses a channel demodulation method on the LTE-A system backhaul link, an LTE-A communication system and device. The demodulation performance of the R-PDSCH in the LTE-A system can be ensured with the present invention.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: July 7, 2015
    Assignee: China Academy of Telecommunications Technology
    Inventors: Libo Wang, Xueming Pan, Guojun Xiao, Deshan Miao, Wenjian Zhang
  • Patent number: 9060363
    Abstract: An adaptive modulation and coding method includes selecting punctured Physical Resource Blocks (PRBs) to transmit downlink data for User Equipment (UE); determining Transport Block Size (TBS) and number of punctured PRB pairs for transmission to the UE based on the carried service; scheduling downlink data for the UE based on determined TBS, and transmitting the number of used punctured PRB pairs and a Modulation and Coding Scheme (MCS) sequence number to the UE; and the UE converting number of the punctured PRB pairs to number of normal PRB pairs, determining modulation scheme and TBS sequence number based on the MCS sequence number, and determining TBS of the downlink data based on number of normal PRB pairs and TBS sequence number.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: June 16, 2015
    Assignee: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Guojun Xiao, Shiqiang Suo, Yu Ding
  • Patent number: 9048909
    Abstract: Disclosed in an embodiment of the present invention is a method for transmitting channel state information and device thereof. By applying the technical schemes of the embodiment of the present invention, in a LTE-A system using PUCCH reporting mode 1-1, in a situation where PMI feedback for 8 antenna ports is needed to be reported in a sub-frame and PUCCH capacity is limited, therefore codebook compression is required, a corresponding relationship definition of the pre-coding matrix indicator information or the pre-coding matrix indicator information pair and the codebook index or the codebook index pair after codebook compression is provided, thus realizing the feedback and receiving of channel state information between a base station and terminal equipment.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: June 2, 2015
    Assignee: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventors: Ranran Zhang, Qiubin Gao, Meifang Jing, Rakesh Tamrakar, Guojun Xiao