-
公开(公告)号:US20200322108A1
公开(公告)日:2020-10-08
申请号:US16906962
申请日:2020-06-19
发明人: Jialing Liu , Weimin Xiao , Murali Narasimha , Brian Classon , Qian Cheng
摘要: User Equipments (UEs) may be assigned a set of aggregated component carriers for downlink carrier aggregation and/or carrier selection. Some UEs may be incapable of transmitting uplink signals over all component carriers in their assigned set of aggregated component carriers. In such scenarios, a UE may need to perform SRS switching in order to transmit SRS symbols over all of the component carriers. Embodiments of this disclosure provide various techniques for facilitating SRS switching. For example, a radio resource control (RRC) message may be used to signal a periodic SRS configuration parameter. As another example, a downlink control indication (DCI) message may be used to signal an aperiodic SRS configuration parameter. Many other examples are also provided.
-
72.
公开(公告)号:US10757696B2
公开(公告)日:2020-08-25
申请号:US16189693
申请日:2018-11-13
发明人: Weimin Xiao , Qian Cheng , Philippe Sartori , Vipul Desai , Jialing Liu , Lukasz Krzymien
IPC分类号: H04W72/04 , H04B7/06 , H04B7/08 , H04W72/08 , H04L25/02 , H04L5/00 , H04B7/0408 , H04B7/0413
摘要: A device and method for transmission and reception of control and data channels with a group reference signal (GRS). A GRS may include a first common reference signal associated with a first group of users and a second common reference signal associated with a second group of users. Some users or channels can be grouped to use one set of common reference signals and other users or channels can be grouped to use another set of common reference signals.
-
公开(公告)号:US10651900B2
公开(公告)日:2020-05-12
申请号:US15983692
申请日:2018-05-18
发明人: Diana Maamari , Jialing Liu , Qian Cheng , Weimin Xiao , Hao Zhou , Anthony C. K. Soong
摘要: A method for operating a communication device includes receiving a first transmission including a first signal on one or more resources associated with signal reception, deriving a receive filter in accordance with the received first transmission, deriving a transmit filter in accordance with the receive filter, precoding a second signal with the transmit filter, thereby producing a second transmission, and transmitting the second transmission.
-
公开(公告)号:US20190356364A1
公开(公告)日:2019-11-21
申请号:US15983692
申请日:2018-05-18
发明人: Diana Maamari , Jialing Liu , Qian Cheng , Weimin Xiao , Hao Zhou , Anthony C.K. Soong
IPC分类号: H04B7/0417 , H04L5/00 , H04W72/04 , H04B7/06 , H04W72/08
摘要: A method for operating a communication device includes receiving a first transmission including a first signal on one or more resources associated with signal reception, deriving a receive filter in accordance with the received first transmission, deriving a transmit filter in accordance with the receive filter, precoding a second signal with the transmit filter, thereby producing a second transmission, and transmitting the second transmission.
-
75.
公开(公告)号:US20190082429A1
公开(公告)日:2019-03-14
申请号:US16189693
申请日:2018-11-13
发明人: Weimin Xiao , Qian Cheng , Philippe Sartori , Vipul Desai , Jialing Liu , Lukasz Krzymien
IPC分类号: H04W72/04 , H04L5/00 , H04W72/08 , H04B7/08 , H04B7/0408 , H04B7/06 , H04B7/0413
摘要: A device and method for transmission and reception of control and data channels with a group reference signal (GRS). A GRS may include a first common reference signal associated with a first group of users and a second common reference signal associated with a second group of users. Some users or channels can be grouped to use one set of common reference signals and other users or channels can be grouped to use another set of common reference signals.
-
76.
公开(公告)号:US20180302848A1
公开(公告)日:2018-10-18
申请号:US16011223
申请日:2018-06-18
发明人: Jialing Liu , Weimin Xiao , Qian Cheng , Vipul Desai
IPC分类号: H04W48/12 , H04W56/00 , H04L5/00 , H04W24/08 , H04W36/00 , H04W24/10 , H04W52/02 , H04W48/16
摘要: System and method embodiments are provided for network adaptation and utilization of a discovery signal (DS). In an embodiment, a method in a UE for communicating in a wireless network includes receiving a parameter(s) from a network controller, wherein the parameter provides the UE with an activation time frame within which the UE can expect to receive a common reference signal (CRS) from a network component, a deactivation time frame within which the UE is not to expect to receive the CRS, and information for receiving and processing a DS from the network component; receiving the DS from the network component, wherein a structure and format of the DS conforms to the parameter received by the UE; refraining from attempting to perform CRS based procedures when the CRS is not received; and performing one of synchronization, cell identification, and DS based radio resource management (RRM) measurements according to the DS.
-
77.
公开(公告)号:US20180219661A1
公开(公告)日:2018-08-02
申请号:US15936079
申请日:2018-03-26
发明人: Jialing Liu , Weimin Xiao , Qian Cheng
CPC分类号: H04L5/0048 , H04L5/001 , H04W28/08 , H04W56/0015 , H04W72/042 , H04W72/0446 , H04W74/0808
摘要: An embodiment of the present invention is disclosed including a method for adaptive reception, the method. The method includes receiving, by a user equipment (UE), an indicator from a first component carrier, the indicator indicating whether a second component carrier is in the On state. Receiving, by the UE, from the second component carrier a subframe wherein a reference signal is provided at a first symbol position of the subframe in a majority of subcarriers of the subframe. The second component carrier and the UE are then synchronized based on the reference signals. The UE then initiates a data link with the second component carrier.
-
公开(公告)号:US20180213491A1
公开(公告)日:2018-07-26
申请号:US15934431
申请日:2018-03-23
发明人: Jialing Liu , Weimin Xiao , Qian Cheng
CPC分类号: H04W56/00 , H04L5/001 , H04L5/0051 , H04L5/0098 , H04W56/0015 , H04W72/0406 , Y02D70/00 , Y02D70/1262 , Y02D70/142 , Y02D70/24
摘要: An embodiment communication system and method adaptively use a secondary cell under the control of a primary cell for communicating with a user device. The secondary cell and the user device communicate based on instructions provided to both by the primary cell. To reduce interference and minimize power usage, the communications channel for the secondary cell is normally off.
-
公开(公告)号:US20180167921A1
公开(公告)日:2018-06-14
申请号:US15879938
申请日:2018-01-25
发明人: Jialing Liu , Qian Cheng , Bingyu Qu , Weimin Xiao , Hossein Bagheri
CPC分类号: H04W72/042 , H04L5/001 , H04L5/0035 , H04L5/0053 , H04L5/0073 , H04W24/02 , H04W28/10 , H04W52/0235 , H04W52/365 , H04W72/00 , H04W76/27 , Y02D70/1262 , Y02D70/142 , Y02D70/166
摘要: A method for cell adaptation includes receiving, by a user equipment (UE), one or more transmission parameters for a transition reference signal (TRS). One or more cells is transitioned between a reduced activity mode and an active transmission and reception mode in accordance with the TRS. The method further includes the UE determining whether or not to transmit the TRS in accordance with one or more TRS transmission criteria, and the UE transmitting the TRS in accordance with the one or more transmission parameters.
-
公开(公告)号:US20180167244A1
公开(公告)日:2018-06-14
申请号:US15818599
申请日:2017-11-20
发明人: Qian Cheng , Weimin Xiao , Jialing Liu
CPC分类号: H04L27/262 , H04L5/0048 , H04L27/2601 , H04L27/2621 , H04L27/2628 , H04L27/2636 , H04L27/2639 , H04L43/16
摘要: A method for reducing a peak to average power ratio (PAPR) of an orthogonal frequency division multiplexing (OFDM) signal. A first signal in the frequency domain is processed to generate a second signal by performing a modular permutation on the first signal according to a modular permutation index, and/or by performing a cyclic shift on the first signal according to a cyclic shift parameter. The second signal is then mapped to a number of tones, and transformed into a time-domain signal for transmission. The modular permutation index and/or the cyclic shift parameter are selected so that the signal for transmission has a PAPR that satisfies a predefined PAPR criteria.
-
-
-
-
-
-
-
-
-