-
公开(公告)号：US11290246B2
公开(公告)日：2022-03-29
申请号：US16060951
申请日：2016-11-08
Abstract: Disclosed in the present invention are a demodulation reference signal (DMRS) indication method, a terminal, and a base station. The method in the present invention comprises: a first terminal obtains transmission data flow quantity indication information of all scheduled terminals in at least one scheduling resource, or obtains resource element (RE) quantity indication information occupied by DMRSs corresponding to transmission flows of all the scheduled terminals in the at least one scheduling resource; and the first terminal determines, according to the obtained indication information, RE positions configured or occupied by the DMRSs corresponding to an interference data flow of the first terminal in the scheduling resources. By means of the present invention, DMRSs in transmission of multiple data flows can be indicated, and the present invention is particularly applicable to an MU-MIMO system of a large-scale antenna array.
-
公开(公告)号：US10554283B2
公开(公告)日：2020-02-04
申请号：US16067122
申请日：2016-11-01
Inventor： Xin Su , Yang Song , Chuanjun Li
IPC: H04B7/06 , H04B7/0456 , H04B7/04 , H04B7/0417
Abstract: Provided are a method and device for uplink information feedback and downlink data transmission, used, when the speed of motion of a terminal is high, for solving the problem of CSI information reported by the terminal being insufficient to track changes on the channel, such that data transmission carried out on the basis of the channel state information reported by the terminal causes seriously degraded performance. The method comprises: a base station obtaining a precoding matrix of a terminal, and an l-th precoding matrix set of L precoding matrix sets corresponding to said precoding matrix; each precoding matrix set of said L precoding matrix sets containing at least one precoding matrix; said at least one precoding matrix originating from a preset codebook, wherein l≤L and L is a positive integer; according to the precoding matrix contained in the obtained l-th precoding matrix set, the base station sending downlink data to the terminal. By means of the precoding matrix set, a relatively wide beam is formed to cover the user, thus guaranteeing downlink transmission for the terminal when it is moving at high speed, improving the reliability of downlink transmission.
-
公开(公告)号：US10193609B2
公开(公告)日：2019-01-29
申请号：US15771079
申请日：2016-12-29
Inventor： Chuanjun Li , Xin Su , Yang Song
IPC: H04B7/06 , H04B7/0426 , H04L5/00 , H04B7/0456
Abstract: A method for feeding back CIS includes: dividing a plurality of antenna ports into a plurality of groups of antenna ports; configuring for each group a same intra-group codebook set consisting of a plurality of intra-group precoding matrices, allocating for each group a plurality of different reference signals corresponding to a same reference resource, and configuring for each antenna port in each group a precoded reference signal acquired after a precoding operation using the intra-group precoding matrices, the number of the reference resources corresponding to the number of the intra-group precoding matrices in the intra-group codebook set, and the number of the reference signals corresponding to each reference resource corresponding to the number of groups of inter-group antenna ports; transmitting the precoded reference signal to a UE via each antenna port; and receiving the CSI fed back by the UE after measurement on the reference signal.
-
Patent Agency Ranking
公开(公告)号：US10263736B2
公开(公告)日：2019-04-16
申请号：US15562895
申请日：2016-03-22
Inventor： Shaoli Kang , Bin Ren , Hao Liu , Yang Song
Abstract: A method and device for data transmission and detecting received signals are provided. The transmitting end adjusts each of a plurality of layers of data modulation symbols on each of time-frequency resources modulated by an initial modulation constellation diagram, according to a modulation constellation rotating factor corresponding to each of layers of data modulation symbols on each of the time-frequency resources; and the transmitting end transmits the plurality of layers of adjusted data modulation symbols superposed on each of time-frequency resources.
-
公开(公告)号：US20210344407A1
公开(公告)日：2021-11-04
申请号：US16324880
申请日：2017-08-03
Inventor： Qiuping HUANG , Qiubin GAO , Runhua Chen , Hui Li , Rakesh Tamrakar , Yang Song , Xin Su , Yu Yang , Mengjun Wang , Chuanjun Li
IPC: H04B7/08 , H04B7/0408 , H04B7/06
Abstract: A method and a device for transmitting downlink reception beam training signals are provided. The method at the second device side includes: receiving a downlink reception beam training trigger notification message sent by a first device; receiving downlink reception beam training signals sent by the first device, based on the downlink reception beam training trigger notification message; and performing a downlink reception beam training based on the downlink reception beam training signals. The method at the first device side includes: sending a downlink reception beam training trigger notification message to a second device when determining that a downlink reception beam training is to be performed for the second device, and sending downlink reception beam training signals to the second device after the downlink reception beam training trigger notification message is sent to the second device.
-
16.发明授权公开(公告)号：US11025390B2
公开(公告)日：2021-06-01
申请号：US16324471
申请日：2017-07-24
Inventor： Rakesh Tamrakar , Qiubin Gao , Runhua Chen , Hui Li , Qiuping Huang , Mengjun Wang , Chuanjun Li , Yu Yang , Yang Song , Xin Su
Abstract: A method for transmitting uplink Sounding Reference Signal, SRS, a terminal, a network side device and a storage medium are provided. The method includes determining a transmission manner for one or more uplink SRSs in a wideband system by a terminal according to a configuration from a network side device, wherein the wideband system is configured with a plurality of basic parameters; transmitting the one or more uplink SRSs to the network side device in the wideband system by the terminal according to the transmission manner.
-
公开(公告)号：US10924935B2
公开(公告)日：2021-02-16
申请号：US16065033
申请日：2016-11-17
Inventor： Yang Song , Shaoli Kang , Bin Ren
IPC: H04W72/12 , H04B7/0413 , H04B7/0452 , H04W72/08 , H04W72/04 , H04L5/00 , H04B7/06 , H04W16/10 , H04W74/02 , H04W74/00 , H04W16/24 , H04W16/18
Abstract: A method and a device for determining multi-user transmission mode are provided. The method includes: grouping terminals based on channel spatial characteristics of the terminals; allocating data transmission modes to the terminals, where data transmission of the terminals in different groups is performed on an identical scheduling time-frequency resource and in a Multi-User Multiple-Input Multiple-Output (MU-MIMO) mode, and data transmission of the terminals in an identical group is performed on the scheduling time-frequency resource and in a non-orthogonal multiple access mode.
-
公开(公告)号：US10892785B2
公开(公告)日：2021-01-12
申请号：US16066226
申请日：2016-11-28
Inventor： Xin Su , Yang Song , Chuanjun Li
Abstract: The present application discloses a method and an apparatus for signal processing. In the present application, since a front end device in a base station system performs MIMO detection and related baseband-processing of a time domain signal received from an antenna unit and transmits the signal that is baseband-processed to a back end device of the base station system, the back end device merely performs other baseband processing, apart from the MIMO detection and the related baseband processing. Compared with the prior art, the embodiments of the present application move some of the baseband processing forward to be implemented on a front end device such that only the data of each scheduled user with less redundancy are required to be transmitted in an interface between the front end device and a backend device, reducing the pressure on the rate of data transmission between the front end device and the back end device.
-
-
-
-
-
-
-
Search Results
18
records
(took 0.019 seconds)
