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公开(公告)号：US09942714B2
公开(公告)日：2018-04-10
申请号：US15125577
申请日：2015-03-12
Inventor： Jing Fu , Haiyang Quan , Jing Liang
CPC classification number: H04W4/026 , H04J11/00 , H04W24/08 , H04W64/00 , H04W72/085 , H04W72/10 , H04W88/02
Abstract: The present invention provides a method and device for transmission on unlicensed spectrum in a UE and a base station. In view of the problem of DFS constraints and PHICH resource waste that is caused by communication of an uplink synchronous HARQ on unlicensed spectrum, in the present invention, logical information is configured so that PUSCHs transmitted through different sub-frames on different physical carriers form one logical carrier, and PHICH resources are reserved for the logical carrier. As an embodiment, downlink signaling is sent in a sub-frame for sending a PHICH so as to indicate transmission bandwidth for data retransmission. The solution provided in the present invention saves PHICH resources and eliminates the constraints on the DFS by the synchronous HARQ. Besides, the present invention reuses the CA scheme in the existing LTE as much as possible, and has high compatibility.
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公开(公告)号：US09924430B2
公开(公告)日：2018-03-20
申请号：US14760365
申请日：2014-01-07
Inventor： Jing Liang , Haiyang Quan
CPC classification number: H04W36/14 , H04W36/0061 , H04W36/0072 , H04W84/12 , H04W88/06
Abstract: Disclosed are a heterogeneous network switching method, device and system, relating to the technique of communication. When a network-side device such as a base station determines that a UE needs to be switched into a non-3GPP network, switch signaling carrying switch indication information is sent to the UE; the switch indication information is used for instructing the UE to switch some of or all of the bearers from a 3GPP network to a non-3GPP network, so that the UE can switch some of all of the bearers from a 3GPP network to a non-3GPP network according to the switch indication information, thus realizing heterogeneous network switching initiated by a network side.
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公开(公告)号：US20180041922A1
公开(公告)日：2018-02-08
申请号：US15555962
申请日：2016-02-03
IPC: H04W28/18
Abstract: The present disclosure provides an air-interface protocol stack configuration method, a data transmission method, an air-interface protocol stack configuration device and a data transmission device. The air-interface protocol stack configuration method includes steps of: configuring an air-interface protocol stack to be used for data transmission in accordance with data transmission characteristics of communication ends for the data transmission; and transmitting configuration information or identification information about the air-interface protocol stack to at least one of the communication ends for the data transmission.
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184.发明申请公开(公告)号：US20180041314A1
公开(公告)日：2018-02-08
申请号：US15555080
申请日：2016-02-29
Inventor： Yanan Lin , Zukang Shen , Xueming Pan , Jiaqing Wang , Weijie Xu
CPC classification number: H04L1/1887 , H04L1/1671 , H04L5/00 , H04L5/0007 , H04L5/001 , H04L5/0044 , H04L5/0053 , H04L27/0006 , H04W72/0413 , H04W72/042 , H04W72/1263
Abstract: Disclosed in the present invention are a data transmission method, a feedback information transmission method, and a related device, used for providing a solution for transmitting data on an unlicensed frequency band in an LTE system. The method comprises: a terminal device, on the basis of a signal/information sent by a network device, determines a starting time of a system wireless sub-frame; the terminal device, on the basis of a system wireless sub-frame n+1 starting time, receives downlink control information, wherein n is the serial number of the system wireless sub-frame; the terminal device, on the basis of the downlink control information, determines in the system wireless sub-frame n the starting time of a service sub-frame m, wherein m is the serial number of the service sub-frame, the starting time of the service sub-frame m being different to the starting time of the system wireless sub-frame n, and the length of the service sub-frame being different to the length of the system wireless sub-frame; and the terminal device receives service data during the service sub-frame m.
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185.发明申请公开(公告)号：US20180041265A1
公开(公告)日：2018-02-08
申请号：US15551275
申请日：2016-01-14
Inventor： Xin SU
IPC: H04B7/06 , H04L5/00 , H04B17/336 , H04B7/0456
CPC classification number: H04B7/0634 , H04B7/0456 , H04B7/0469 , H04B7/0478 , H04B7/0626 , H04B7/0632 , H04B7/0658 , H04B17/336 , H04L5/0057 , H04W24/10
Abstract: A CSI feedback method includes steps of: performing, by a terminal, channel estimation on a received pilot signal to acquire channel estimation values of A antenna ports for transmitting the pilot signal to a network device; determining, by the terminal, Q antenna ports based on the channel estimation values of the A antenna ports, L≦Q≦A, L representing a value of a RI adopted by the network device in the case of transmitting downlink data to the terminal or a value of a RI of a channel determined by the terminal; and determining, by the terminal, a first-level PMI based on the Q antenna ports, and feeding back CSI containing the first-level PMI to the network device, the first-level PMI being used to indicate indices of the Q antenna ports among the A antenna ports for transmitting the pilot signal.
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Patent Agency Ranking
公开(公告)号：US20180026766A1
公开(公告)日：2018-01-25
申请号：US15550326
申请日：2016-01-08
Inventor： Chuanjun LI , Xin SU
Abstract: An antenna calibration method and apparatus, which are used for improving calibration accuracy. In the embodiments of the present invention, sending direction radio frequency channels in an antenna array are grouped into M groups, an intra-group sending calibration pilot frequency sequence of each group of sending direction radio frequency channel is sent at different sending time slots in a time division manner, and along with the decreasing of the quantity of each group of sending direction radio frequency channels, a length of the intra-group sending calibration pilot frequency sequence mapped on each radio frequency channel used for channel estimation is increased, thereby improving the accuracy of an inter-channel compensation factor of each determined sending direction radio frequency channel.
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187.发明授权公开(公告)号：US09860889B2
公开(公告)日：2018-01-02
申请号：US14899802
申请日：2014-07-15
Inventor： Jing Xu , Xueming Pan , Zukang Shen
CPC classification number: H04W72/042 , H04L5/0053 , H04L5/14 , H04L5/1469
Abstract: The present disclosure provides methods for indicating and determining uplink/downlink configuration, a base station and a terminal. A base station transmits uplink/downlink configuration information to at least one terminal via a DCI message, the DCI message is provided with at least one uplink/downlink configuration information domain for carrying the uplink/downlink configuration information, and at least one of the uplink/downlink configuration information domains in the DCI message is parsed by the at least one terminal. The at least one terminal parses the received DCI message in accordance with predetermined DCI configuration information, and acquires its own uplink/downlink configuration from a corresponding position in the DCI message.
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公开(公告)号：US20170373791A1
公开(公告)日：2017-12-28
申请号：US15532992
申请日：2015-12-21
Inventor： Xiaoming DAI , Shaoli KANG , Shaohui SUN , Xi MENG
Abstract: The present application provides a spatial layered transmission method and a spatial layered transmission device. The spatial layered transmission method includes steps of: dividing to-be-transmitted data into at least two layers of spatial data; determining a symbol rate for each layer of spatial data, to enable an error between SERs for the layers of spatial data to be smaller than a predetermined error threshold; and encoding each layer of spatial data in accordance with the determined symbol rate, and transmitting the encoded layer of spatial data.
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公开(公告)号：US09826494B2
公开(公告)日：2017-11-21
申请号：US15031116
申请日：2014-10-28
Inventor： Wenhong Chen , Qiubin Gao , Ying Peng , Rui Zhao
CPC classification number: H04W56/003 , H04B7/26 , H04W56/002 , H04W56/0035 , H04W72/04 , H04W72/0406 , H04W76/10 , H04W76/14 , H04W92/18
Abstract: Disclosed are a method and an apparatus for transmitting D2D signals, wherein the method comprises: detecting a synchronization signal and/or a D2D signal, and determining a synchronization reference for sending or receiving other D2D signals based on the synchronization signal and/or the D2D signal; based on information carried in the detected synchronization signal and/or the D2D signal, determining a D2D resource configuration; and based on the determined synchronization reference for sending or receiving the other D2D signals and the determined D2D resource configuration, determining a resource position used for transmitting D2D signals, and sending or receiving the other D2D signals in the resource position. By enabling a UE to learn the D2D resource configuration based on the synchronization signal and/or the D2D signal, the present application prevents the UE from always using fixed resources when transmitting D2D signals, thus reducing mutual interference and improving transmission efficiency and quality.
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公开(公告)号：US20170311251A1
公开(公告)日：2017-10-26
申请号：US15518238
申请日：2015-09-29
Inventor： Jiamin Liu , Fei Qin , Yuan He
CPC classification number: H04W48/20 , H04W8/02 , H04W8/26 , H04W24/02 , H04W36/0083 , H04W36/0094 , H04W68/12 , H04W76/11 , H04W88/12
Abstract: A communications method, device, and system for solving the connection and communications efficiency problem due to the presence of a large number of cells. The method comprises: a first local controller determines that a user equipment needs to establish a data bearer; data bearer configuration information for transmitting user data is generated; the data bearer configuration information is transmitted to a first local gateway and/or at least a first small base station, so that the network element entity that has received the data bearer configuration information establishes a data transmission channel according to the data bearer configuration information, the user equipment belonging to the first local controller and the first local gateway, the first small base station providing services to the user equipment.
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