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公开(公告)号：US11888765B2
公开(公告)日：2024-01-30
申请号：US17101974
申请日：2020-11-23
发明人： Qian Cheng , Weimin Xiao , Philippe Sartori , Jialing Liu
CPC分类号： H04L5/001 , H04L5/0037 , H04L5/0044 , H04L25/00 , H04W72/23 , H04L5/0053
摘要： Methods for wireless communications over a wideband carrier are provided. Time-frequency resources of the wideband carrier within a transmission time interval are divided into multiple time-frequency resource blocks. Each of the time-frequency resource blocks corresponds to a group of contiguous subcarriers of the wideband carrier and orthogonal frequency division multiplexing symbols. Data streams may be scheduled to be transmitted in different time-frequency resource blocks, and may be destined for different user equipments or the same user equipment. Baseband processing operations may be performed on data streams scheduled in different time-frequency resource blocks independently from one another. Separate control channels or one common control channel may be configured for data transmissions in different time-frequency resource blocks.
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公开(公告)号：US20230370223A1
公开(公告)日：2023-11-16
申请号：US18319770
申请日：2023-05-18
发明人： Jialing Liu , Weimin Xiao , Qian Cheng
IPC分类号： H04L5/00 , H04L1/00 , H04L25/03 , H04B7/0456 , H04W72/542
CPC分类号： H04L5/0048 , H04L1/0003 , H04L25/03 , H04L5/0051 , H04L5/006 , H04L5/0094 , H04B7/0478 , H04L5/0091 , H04L1/0009 , H04L5/0023 , H04L1/0025 , H04W72/542 , H04L5/0044 , H04W72/0446
摘要： An embodiment method of network node operation includes indicating, by a first network node, to a first UE, a first number of REs in a first set of RBs for a first reference signal, transmitting, by the first network node, to the first UE, the first reference signal in accordance with the first number of REs and a first precoding in a first subframe, receiving, by the first network node, from the first UE, a report indicating a first MCS in accordance with a level of signal and interference measured by the first UE, wherein the measurement is restricted to the first reference signal, and transmitting, by the first network node, a first data with the indicated first MCS and the first precoding in a second subframe, the first data being transmitted on a second number of REs in the first set of RBs in the second subframe.
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公开(公告)号：US11184073B2
公开(公告)日：2021-11-23
申请号：US16782011
申请日：2020-02-04
发明人： Qian Cheng , Weimin Xiao , Jialing Liu
IPC分类号： H04B7/06 , H04B7/0417
摘要： Various methods and systems are provided to provide for Channel State Information (CSI) feedback of hybrid beamforming. In a first example embodiment, a method for signaling a beamforming reference signal (BFRS) is provided. A resource block is created for the BFRS, the resource block containing a plurality of resource elements, each resource element defined by a time-frequency resource within one subcarrier and one multiplexing symbol. A total number of analog transmit beams for the BFRS is then determined, along with grouping information for the analog transmit beams for the BFRS. Then, the resource block, the total number of analog beams, and the grouping information are transmitted from a first network controller to a user equipment (UE). Then the BFRS is transmitted from the first network controller to the UE.
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公开(公告)号：US20210152308A1
公开(公告)日：2021-05-20
申请号：US17157719
申请日：2021-01-25
发明人： Lukasz Krzymien , Philippe Sartori , Weimin Xiao , Qian Cheng , Carmela Cozzo
摘要： System and method embodiments are provided for adaptive pilot allocation. In an embodiment, a method in a communication controller for adaptive pilot allocation includes determining at least one channel condition parameter for a wireless channel between the communications controller and a user equipment (UE). The method includes selecting a microframe pilot pattern to use for subsequent communications on the wireless channel according to the at least one channel condition parameter. Additionally, the method includes signaling an indication of the selected microframe pilot pattern to the user equipment. The method further includes transmitting data to the UE using the selected microframe pilot pattern.
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公开(公告)号：US10980064B2
公开(公告)日：2021-04-13
申请号：US16008783
申请日：2018-06-14
发明人： Murali Narasimha , Weimin Xiao , Qian Cheng , Jialing Liu , Vipul Desai
摘要： An efficient random access procedure is provided for reduced control overhead of connections in random access systems. A base station transmits one or more synchronization signal (SS) blocks. A UE detects and determines a preferred SS block. The UE transmits multiple random access signals (e.g., PRACH signals) in a RACH occasion. Each PRACH signal is transmitted on a different beam and includes a RACH preamble. The base station receives one or more of the PRACH signals. The RACH occasion and optionally the RACH preamble identify the preferred SS block. The base station determines a preferred PRACH signal. The base station sends a RAR to the UE using the transmit beam of the preferred SS block. The RAR indicates the preferred PRACH signal and an uplink resource allocation. The UE receives the RAR and transmits a message using the transmit beam of the preferred PRACH signal and the uplink resource allocation.
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公开(公告)号：US10924984B2
公开(公告)日：2021-02-16
申请号：US15359241
申请日：2016-11-22
发明人： Qian Cheng , Weimin Xiao , Jialing Liu
摘要： User equipments can achieve quick channel synchronization when establishing a connection to base stations transitioning from a sleep mode to an active mode by using discovery resource signal (DRS) processing results and cell reference signal (CRS) processing results to establish channel synchronization with a CRS antenna port. More specifically, the user equipment may be notified that the CRS antenna port and DRS antenna port are quasi-co-located (QCL), and then use DRS processing results in conjunction with CRS processing results to obtain faster channel synchronization with a CRS antenna port. This may be particularly beneficial when the target BS is transitioned from a sleep mode to an active mode in order to accept a handover of the user equipment.
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公开(公告)号：US10924228B2
公开(公告)日：2021-02-16
申请号：US16546114
申请日：2019-08-20
发明人： Jialing Liu , Brian Classon , Xiang Chen , Vipul Desai , Qian Cheng , Weimin Xiao
摘要： The disclosure relates to a base station configuring component carriers to user equipment (UE). The base station determines one or more component carriers to configure based on the UE carrier aggregation capability and sends a first configuration signaling to configure the UE with the component carriers in one or more component carrier sets. The base station configures each of the component carrier sets with a first common parameters and operations set and sends a second configuration signaling to configure the component carrier sets of the UE with the first common parameters and operations set. The base station then sends a third configuration signaling to configure each of the component carriers in the UE with a second parameters and operations set.
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公开(公告)号：US20210029700A1
公开(公告)日：2021-01-28
申请号：US17068612
申请日：2020-10-12
发明人： Jialing Liu , Weimin Xiao , Qian Cheng
摘要： Communications in a wireless network for carrier Selection and switching are provided. A terminal in the wireless network is simultaneously receiving data on at most m carriers. A base station in the wireless network sends an activation command associated with more than m carriers to the terminal. The terminal activates the more than m carriers. Then the base station selects a first subset from the activated carriers, and sends a first monitoring command associated with the first subset via a first physical-layer signaling to the terminal. When load and/or interference situations are changed, the base station selects a second subset from the activated carriers, and sends a second monitoring command associated with the second subset via a second physical-layer signaling to the terminal, wherein the first subset is different from the second subset.
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公开(公告)号：US10897295B2
公开(公告)日：2021-01-19
申请号：US15486551
申请日：2017-04-13
发明人： Qian Cheng , Jialing Liu , Weimin Xiao , Majid Ghanbarinejad
摘要： A method for wireless communications is provided. The method includes transmitting a first signal during a first time interval. The first signal is encoded with a first spreading sequence generated by permutating a root sequence based on a permutation parameter associated with a first index. The method further includes transmitting a second signal during a second time interval. The second signal is encoded with a second spreading sequence generated by permutating the root sequence based on a permutation parameter associated with a second index. The method further includes receiving an indication of either the first index or the second index from a user equipment (UE).
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10.发明申请公开(公告)号：US20200295890A1
公开(公告)日：2020-09-17
申请号：US16892070
申请日：2020-06-03
发明人： Philippe Sartori , Vipul Desai , Qian Cheng , Lukasz Krzymien , Carmela Cozzo , Weimin Xiao , Anthony C.K. Soong
摘要： A system and method of scheduling transmissions. A wireless device such as an eNodeB (eNB) may schedule a transmission of a wideband (WB) signal on a micro-frame selected from a plurality of WB micro-frames of a WB carrier. A narrowband (NB) subframe may span a portion of the selected WB micro-frame in the frequency-domain, and the selected WB micro-frame may overlap at least a portion of the NB subframe in the time-domain. The WB signal and an NB signal may be transmitted over the WB micro-frame and the NB subframe in accordance with a first numerology and a second numerology, respectively. A WB subframe may be divided into a plurality of micro-frames. The transmission direction of the WB micro-frame may be scheduled according to a transmission rule based on the contents of a payload in the NB subframe.
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