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公开(公告)号：US11425754B2
公开(公告)日：2022-08-23
申请号：US16968964
申请日：2019-02-14
发明人： Reem Karaki , Jung-Fu Cheng , Havish Koorapaty
摘要： Embodiments herein relate to a method performed by a first communication node operating in a wireless communications network. The first communication node adjusts a value of a Contention Window, CW, from a first value to a second value, the second value being a higher value than the first value, wherein adjusting the value is based on: one or more feedback timers having expired at a time of performing a sensing procedure in the absence of: a) a received uplink, UL, grant from a second communication node, or b) a downlink feedback from the second communication node for an Autonomous Uplink, AUL, transmission from the first communication node. Following adjusting the value, the first communication node initiates a sensing procedure performed prior to a transmission of an UL burst to the second communication node, wherein the sensing procedure uses the adjusted value of the CW.
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公开(公告)号：US20220225411A1
公开(公告)日：2022-07-14
申请号：US17608641
申请日：2020-04-30
发明人： Johan Axnäs , Stephen Grant , Jung-Fu Cheng , David Sugirtharaj , Johan Rune
摘要： A method for accessing a cellular communications network in unlicensed spectrum is provided. More specifically, the method is related to performing a Listen-Before-Talk (LBT) procedure prior to transmitting a Physical Random Access Channel (PRACH) preamble for accessing a New Radio-Unlicensed (NR-U) network. A User Equipment (UE) first performs the LBT procedure. If the LBT procedure is successful, the UE then generates a punctured PRACH preamble and transmits the punctured PRACH preamble. By puncturing the PRACH preamble, it is possible to create a gap(s) for performing the LBT procedure in a way that is backward compatible with existing NR-U specification and does not reduce a number of random access occasions in a slot or a mini-slot. As a result, it is possible to transmit PRACH preambles in consecutive random access occasions, thus helping to increase spectrum utilization and reduce latency in the cellular communications network.
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公开(公告)号：US20220209898A1
公开(公告)日：2022-06-30
申请号：US17609894
申请日：2020-05-11
发明人： Reem Karaki , Jung-Fu Cheng
摘要： Methods and apparatus are provided to support CBG-based retransmission on configured UL resources. The base station provides downlink feedback information (DPI) to the UE for one or more HARQ processes. The DPI comprises TB-level feedback, retransmission control information, and CBG-level feedback. The TB-level feedback indicates, for each HARQ process, ACK/NACK of a transport block associated with the HARQ process. The retransmission control information indicates, for each NACK'ed TB, whether the base station expects retransmission at the TB level or a CBG level. The CBG-level feedback indicates, for each NACK'ed TB where the CBG-indicator bitmap indicates code block group level retransmission, ACK/NACK for one or more CBGs in the NACK'ed transport block.
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公开(公告)号：US11356211B2
公开(公告)日：2022-06-07
申请号：US16512383
申请日：2019-07-16
发明人： Henning Wiemann , Mattias Tan Bergström , Jung-Fu Cheng , Oskar Drugge , Havish Koorapaty , Henrik Sahlin , Yu Yang
摘要： Methods of operation of a wireless device are provided. In particular, Media Access Control (MAC) protocol aspects are disclosed relating to Licensed Assisted Access (LAA) cells and, more generally, to cells of a cellular communications network operating in an unlicensed frequency spectrum. According to one aspect, a method of operation of a wireless device comprises transmitting an Uplink (UL) transmission on a cell for a corresponding UL Hybrid Automatic Repeat Request (HARQ) process, the cell operating in an unlicensed frequency spectrum, and setting a locally maintained status for the UL HARQ process to Acknowledgement (ACK) based on an assumption that the UL transmission was successful.
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公开(公告)号：US11330563B2
公开(公告)日：2022-05-10
申请号：US16646068
申请日：2017-09-11
摘要： There is disclosed a method of operating a user equipment in a radio access network, the user equipment being configured with a transmission resource pool. The transmission resource pool includes resources for transmission of response control signaling by the user equipment. The method includes transmitting response control signaling utilising a resource structure, the resource structure being selected from the transmission resource pool based on a signaling characteristic of characterising signaling, the resource structure further being selected based on selection control information included in a received selection control message. The disclosure also pertains to related devices and methods.
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公开(公告)号：US11310786B2
公开(公告)日：2022-04-19
申请号：US16645554
申请日：2017-09-11
发明人： Robert Baldemair , Jung-Fu Cheng
摘要： There is disclosed a method of operating a user equipment in a radio access network, the user equipment being configured with a control channel configuration pertaining to transmission of control information on a control channel. The user equipment further being configured with data channel resources for transmission of data on a data channel. The method includes transmitting control information on data channel resources based on the control channel configuration. The disclosure also pertains to related devices and methods.
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公开(公告)号：US11277858B2
公开(公告)日：2022-03-15
申请号：US16764287
申请日：2017-11-17
发明人： Reem Karaki , Peter Alriksson , Jung-Fu Cheng , Gen Li , Amitav Mukherjee
摘要： A method in a wireless device for performing an uplink transmission to a base station in a wireless access system, wherein the wireless access system comprises one or more mini-slot configurations, the method comprising performing a clear channel assessment for identifying a transmission opportunity and determining the start of a mini-slots. The wireless device performing an uplink transmission within the determined mini-slot wherein the transmission is performed according to a predetermined configuration for mini-slot communication between the base station and the wireless device, such that the base station can identify the start of the uplink transmission.
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公开(公告)号：US11240796B2
公开(公告)日：2022-02-01
申请号：US16960203
申请日：2019-01-10
发明人： Xingqin Lin , Jung-Fu Cheng , Stefan Parkvall , Havish Koorapaty
摘要： Apparatuses and methods are disclosed for block interleaving. In one embodiment, a method includes generating an interleaver sequence for a control resource set, CORESET, configuration for a physical downlink control channel, the interleaver sequence associated with an interleaving matrix; optionally, for each one of an allowed value of number of rows for the interleaving matrix, determining a number of null entries to be added to the interleaving matrix; and selecting a number of rows, R, for the interleaving matrix such that the number of null entries to be added to the interleaving matrix is: no more than a number of columns, C, of the interleaving matrix; and optionally, the smallest among the numbers of null entries determined for each of the allowed values of number of rows for the interleaving matrix. In another embodiment, a method includes decomposing the interleaver sequence.
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公开(公告)号：US11206120B2
公开(公告)日：2021-12-21
申请号：US16610765
申请日：2018-05-04
IPC分类号： H04L5/00
摘要： A method, network node and wireless device for waveform selection are provided. A method includes selecting a waveform based on one of a modulation and coding scheme, MCS, a resource allocation, and transport block size, TBS, and transmitting using the selected waveform.
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公开(公告)号：US11196516B2
公开(公告)日：2021-12-07
申请号：US16636438
申请日：2018-08-10
发明人： Marco Belleschi , Mattias Bergström , Reem Karaki , Jung-Fu Cheng , Mai-Anh Phan , Magnus Stattin
摘要： There is provided a method, in a wireless device, for communicating with a network node using autonomous Uplink (UL) access. The method comprises: after sending a data transmission to a network node, starting a retransmission window associated with a feedback process of the data transmission, the retransmission window including a first timer; and in response to detecting an absence of a feedback signal during a time period given by the first timer, retransmitting the data after expiry of the first timer.
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