Patents by Inventor Chun Hai Yao
Chun Hai Yao 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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Publication number: 20160353303Abstract: A technique is provided to control transmitting, by a mobile station (MS) that uses carrier aggregation, a message including an interoperability test (IOT) indication for one or more uplink-downlink (UL-DL) configuration combinations of time-division-duplex (TDD) radio frames for use by a primary cell and a secondary cell. In one example implementation, an IOT indication may be provided for one or more (or each) uplink-downlink configuration combinations (e.g., one IOT indication per UL-DL configuration combination). In another example implementation, an IOT indication may be provided for one or more sets of uplink-downlink configuration combinations, where each set may include a plurality of UL-DL configuration combinations.Type: ApplicationFiled: August 11, 2016Publication date: December 1, 2016Inventors: Chunli Wu, Woonhee Hwang, Chun Hai Yao
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Patent number: 9473289Abstract: A base station determines a first set of PUCCH resources to use for a first set of UEs to send acknowledgment information to the base station for a first group of DL subframes. The first set of PUCCH resources starts at a first index. The base station determines a second set of PUCCH resources to use for a second set of UEs to send acknowledgment information to the base station for a second group of DL subframes. The second set of PUCCH resources starts at a second index. The UEs in the first set only use the first set of PUCCH resources. The UEs in the second set use the first and second sets of PUCCH resources. For an UL reception, acknowledgement information is received from the first UEs using the first set of PUCCH resources and from the second UEs using the first and second sets of PUCCH resources.Type: GrantFiled: September 26, 2014Date of Patent: October 18, 2016Assignee: Nokia Solutions and Networks OyInventors: Chun Hai Yao, Timo Erkki Lunttila, Esa Tapani Tiirola
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Patent number: 9451490Abstract: A technique is provided to control transmitting, by a mobile station (MS) that uses carrier aggregation, a message including an interoperability test (IOT) indication for one or more uplink-downlink (UL-DL) configuration combinations of time-division-duplex (TDD) radio frames for use by a primary cell and a secondary cell. In one example implementation, an IOT indication may be provided for one or more (or each) uplink-downlink configuration combinations (e.g., one IOT indication per UL-DL configuration combination). In another example implementation, an IOT indication may be provided for one or more sets of uplink-downlink configuration combinations, where each set may include a plurality of UL-DL configuration combinations.Type: GrantFiled: January 22, 2015Date of Patent: September 20, 2016Assignee: Nokia Solutions and Networks OyInventors: Chunli Wu, Woonhee Hwang, Chun Hai Yao
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Patent number: 9386549Abstract: Synchronization in a communication system A method and apparatus for a communication system is disclosed. In the system communications occur via a multiple of nodes each providing a stratum for synchronization. It is determined that the stratum of a node is not included in a predefined set of stratums. In response to said determination synchronizing with the node is provided differently from nodes with stratums without taking the order of the stratum into account. Information about the status can be communicated between nodes.Type: GrantFiled: February 15, 2010Date of Patent: July 5, 2016Assignee: Nokia Solutions and Networks OyInventors: Jie Zhen Lin, Peter Skov, Xin Xia, Chun Hai Yao, Dong Zhao
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Publication number: 20160044663Abstract: A method and apparatus can be configured to determine an uplink-downlink configuration. The method also transmits an indication of the uplink-downlink configuration. The transmitting the indication of the uplink-downlink configuration includes using physical layer signaling. The transmitting the indication of the uplink-downlink configuration also includes reusing an existing physical layer channel.Type: ApplicationFiled: April 3, 2013Publication date: February 11, 2016Inventors: Chun Hai YAO, Hai Peng LEI, Jie Zhen LIN, Kodo SHU, Juejia ZHOU
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Publication number: 20150215800Abstract: A technique is provided to control transmitting, by a mobile station (MS) that uses carrier aggregation, a message including an interoperability test (IOT) indication for one or more uplink-downlink (UL-DL) configuration combinations of time-division-duplex (TDD) radio frames for use by a primary cell and a secondary cell. In one example implementation, an IOT indication may be provided for one or more (or each) uplink-downlink configuration combinations (e.g., one IOT indication per UL-DL configuration combination). In another example implementation, an IOT indication may be provided for one or more sets of uplink-downlink configuration combinations, where each set may include a plurality of UL-DL configuration combinations.Type: ApplicationFiled: January 22, 2015Publication date: July 30, 2015Inventors: Chunli Wu, Woonhee Hwang, Chun Hai Yao
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Publication number: 20150189658Abstract: A method including: using first information and second information to determine a code book size, said first information including information for at least one first subframe of at least one cell for which feedback information is to be provided, said at least one first subframe is prior to subframe n and second information for at least one second subframe of at least one cell for which feedback information is to be provided, said at least one second subframe being after said subframe n; and using said code book size for providing feedback information.Type: ApplicationFiled: August 3, 2012Publication date: July 2, 2015Inventors: Li Zhang, Hai Peng Lei, Chun Hai Yao
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Patent number: 9031556Abstract: The present invention relates to methods, apparatuses, a system, and a computer program product for synchronizing to an uncoordinated access network. A new access device added to the access network is temporarily set into an over-the-air discover state and identification signals are broadcast from the new access device. Operating access devices are set into an discovery state in response to a detection of the identification signal, wherein their inter access device over-the-air transmission is stopped during the discovery state and an identity of the new access device is searched.Type: GrantFiled: January 28, 2009Date of Patent: May 12, 2015Assignee: Nokia Solutions & Networks OyInventors: Peter Skov, Jie Zhen Lin, Chun Hai Yao
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Publication number: 20150109973Abstract: A method for flexible time division duplex (TDD) UL/DL configuration is provided. The method includes designating all subframes in a time division duplex configuration as downlink subframes, with the exception of any subframes scheduled for uplink data and control transmission. The method then includes monitoring downlink control channels in the subframes designated as downlink subframes, and defining at least two different channel state information (CSI) report subframe subsets according to interference levels.Type: ApplicationFiled: May 11, 2012Publication date: April 23, 2015Applicant: Nokia Solutions and Networks OyInventors: Chun Hai Yao, Li Zhang
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Publication number: 20150092624Abstract: A base station determines a first set of PUCCH resources to use for a first set of UEs to send acknowledgment information to the base station for a first group of DL subframes. The first set of PUCCH resources starts at a first index. The base station determines a second set of PUCCH resources to use for a second set of UEs to send acknowledgment information to the base station for a second group of DL subframes. The second set of PUCCH resources starts at a second index. The UEs in the first set only use the first set of PUCCH resources. The UEs in the second set use the first and second sets of PUCCH resources. For an UL reception, acknowledgement information is received from the first UEs using the first set of PUCCH resources and from the second UEs using the first and second sets of PUCCH resources.Type: ApplicationFiled: September 26, 2014Publication date: April 2, 2015Inventors: Chun Hai Yao, Timo Erkki Lunttila, Esa Tapani Tiirola
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Patent number: 8989135Abstract: A spectral arrangement for radio resources is usable for transmitting radio data within a telecommunication network. The spectral arrangement includes (a) a first radio resource usable for transmitting radio data in a first data flow direction, wherein the first data flow direction is either an uplink direction or a downlink direction, (b) a second radio resource usable for transmitting radio data in a second data flow direction, wherein the second data flow direction is opposite to the first data flow direction, (c) a third radio resource usable for transmitting radio data in the second data flow direction and (d) a guard band, which on the frequency scale is located between the first radio resource and the second radio resource such that the first radio resource is separated from the second radio resource Between the second radio resource and the third radio resource there is provided no guard band.Type: GrantFiled: July 9, 2009Date of Patent: March 24, 2015Assignee: Nokia Siemens Networks OyInventors: Peter Skov, Jie Zhen Lin, Chun Hai Yao
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Patent number: 8954009Abstract: For each nth carrier frequency bandwidth of a set of N carrier frequency bandwidths there is determined interference (in which n is an index and N is an integer greater than one). For each nth carrier frequency bandwidth, there is determined a number of cells operating on the nth carrier frequency bandwidth. The number of carrier frequency bandwidths available for selection is reduced to less than N by excluding from consideration at least one carrier frequency bandwidth based on the determined number of cells operating thereon. From the reduced number is selected a carrier frequency bandwidth for use by a host femto cell. In various specific embodiments: the carrier frequency bandwidth excluded from consideration has a maximum number of cells operating thereon; and/or closed subscriber group cells having path loss exceeding a threshold are excluded from the per carrier count; and/or only femto cells are included in the per carrier count.Type: GrantFiled: March 15, 2010Date of Patent: February 10, 2015Assignee: Nokia Siemens Networks OyInventors: Klaus I. Pedersen, Troels E. Kolding, Chun Hai Yao
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Publication number: 20140301256Abstract: Systems, methods, apparatuses, and computer program products for power control enhancement are provided. One method includes retrieving, by an eNB, subframe type information in connection with uplink (UL)/downlink (DL) configuration. The method then includes simultaneously indicating, using physical layer signaling, at least one of the subframe type information and/or corresponding power control parameter set to a user equipment. In one example, the subframe type information and/or the corresponding power control parameter set may be indicated in reused bits of a transmit power command (TPC).Type: ApplicationFiled: April 2, 2014Publication date: October 9, 2014Applicant: Nokia Solutions and Networks OyInventors: Chun Hai YAO, Hai Peng LEI
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Patent number: 8804674Abstract: According to one general aspect, an apparatus may include a processor. In various embodiments, the processor may be configured to select either an uplink sub-frame or a special sub-frame to employ for base station-to-base station (B2B) communication in some embodiments, the processor may be configured to cause at least one user equipment (UE), associated with the apparatus, to either refrain from transmitting or substantially receiving during the selected sub-frame In various embodiments, the processor may be configured to transmit data, from the apparatus to a receiving BS, during at least a portion of the selected sub-frame.Type: GrantFiled: November 12, 2008Date of Patent: August 12, 2014Assignee: Nokia Siemens Networks OyInventors: Tommi Koivisto, Jie Zhen Lin, Peter Skov, Chun Hai Yao
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Publication number: 20140092789Abstract: Various communication systems may benefit from techniques for handling inter-band carrier aggregation (CA). For example, systems of the third generation partnership project (3GPP) long term evolution (LTE) advanced (LTE-A) may benefit from a uplink (UL) downlink (DL) configuration zero handling, particularly in cases where there is no physical hybrid automatic repeat request (HARQ) indicator channel (PHICH). For example, certain embodiments may be applicable to inter-band CA having different UL/DL configuration in use. A method can include triggering in a downlink subframe a first physical uplink shared channel transmission in a first hybrid automatic repeat request process. The method can also include triggering in the downlink subframe a second physical uplink shared channel transmission in a second hybrid automatic repeat request process. The secondary cell can be configured with time division duplex uplink/downlink configuration number zero.Type: ApplicationFiled: September 27, 2013Publication date: April 3, 2014Applicant: NOKIA SOLUTIONS AND NETWORKS OYInventors: Hai Peng LEI, Li ZHANG, Chun Hai YAO
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Publication number: 20140036870Abstract: A method includes receiving information at a first access node with which a user equipment is associated, said information including timing information of a second access node. The method also includes providing access node information for said user equipment in dependence on said timing information, said access node information defining at least one time period when said user equipment is to at least one of transmit to and receive signals from said at least one of said first and second access node.Type: ApplicationFiled: March 16, 2011Publication date: February 6, 2014Applicant: Nokia Siemens Networks OyInventors: Peter Skov, Xiao Yi Wang, Chun Hai Yao
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Publication number: 20140036814Abstract: A method includes communicating with a first cell using a first uplink and downlink configuration and a second cell using a second uplink and downlink configuration, said first cell having predetermined configuration; providing communication feedback for said first cell and the second cell on said second cell using a physical uplink shared channel; and determining a codebook size for said feedback in dependence on downlink assignment indicator information received in an uplink grant.Type: ApplicationFiled: August 2, 2013Publication date: February 6, 2014Applicant: Nokia Siemens Networks OyInventors: Li Zhang, Chun Hai Yao
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Publication number: 20130258995Abstract: There are provided measures for common control deactivation in carrier aggregation, said measures exemplarily including a configuration of a secondary carrier for carrier aggregation with a primary carrier of a terminal, including a deactivation of a common control for the secondary carrier, an indication of the deactivation of the common control for the secondary carrier via the primary carrier, and a signaling of control information, substituting control information of the deactivated common control, for facilitating selection of or operation on the secondary carrier without the deactivated common control via the primary carrier from a base station to the terminal. Said measures may exemplarily be applied for common control deactivation in carrier aggregation in heterogeneous network environments based on LTE, LTE-Advanced, HSPA and/or UMTS radio access systems.Type: ApplicationFiled: December 16, 2010Publication date: October 3, 2013Applicant: Nokia Siemens Networks OYInventors: Peter Skov, Jie Zhen Lin, Chun Hai Yao
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Publication number: 20130136057Abstract: An apparatus, method and computer program product include requesting a physical identifier of a communication base station having a preset hierarchical distance to a communication core network from a first communication base station having a higher hierarchical distance than the preset hierarchical distance, based on a connection on one of an interface between a communication base station having a higher hierarchical distance than the preset hierarchical distance and the communication core network and an interface between two communication base stations both having a higher hierarchical distance than the preset hierarchical distance. Prior to the requesting, an initial synchronization with a neighbor base station can be established. After the requesting, an accurate synchronization with the overly base station based on the obtained physical identifier can be established.Type: ApplicationFiled: February 15, 2010Publication date: May 30, 2013Inventors: Peter Skov, Agnieszka Szufarska, Jie Zhen Lin, Chun Hai Yao, Dong Zhao
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Publication number: 20130010668Abstract: Synchronisation in a communication system A method and apparatus for a communication system is disclosed. In the system communications occur via a multiple of nodes each providing a stratum for synchronisation. It is determined that the stratum of a node is not included in a predefined set of stratums. In response to said determination synchronising with the node is provided differently from nodes with stratums without taking the order of the stratum into account. Information about the status can be communicated between nodes.Type: ApplicationFiled: February 15, 2010Publication date: January 10, 2013Inventors: Jie Zhen LIN, Peter Skov, Xin Xia, Chun Hai Yao, Dong Zhao