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公开(公告)号：US20170251498A1
公开(公告)日：2017-08-31
申请号：US15514283
申请日：2015-09-24
CPC分类号： H04W74/0816 , H04L5/001 , H04L5/0044 , H04L5/0053 , H04L27/0006 , H04W16/14 , H04W74/002 , H04W74/0808 , H04W76/15 , H04W76/16
摘要： There is disclosed a method, implemented in a wireless transmitter associated with license assisted access wireless communications between the wireless transmitter and a wireless receiver. The licensed assisted access wireless communications comprise communications using both a licensed wireless spectrum associated with a primary cell and an unlicensed wireless spectrum associated with a secondary cell. The method comprises determining whether a secondary cell channel between the wireless transmitter and the wireless receiver is idle, the secondary cell channel being associated with the unlicensed wireless spectrum of the secondary cell; and if the secondary cell channel is idle, subsequently transmitting a confirmation signal from the wireless transmitter to the wireless receiver via the secondary cell, the confirmation signal alerting the wireless receiver to the commencement of valid data transmissions from the wireless transmitter via the secondary cell. There are also disclosed further related methods and devices.
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公开(公告)号：US20160360525A1
公开(公告)日：2016-12-08
申请号：US14916114
申请日：2016-01-22
CPC分类号： H04W72/0446 , H04L5/001 , H04L5/0041 , H04L27/0006 , H04W16/14 , H04W28/08 , H04W72/0466 , H04W72/14 , H04W74/0808 , H04W84/12
摘要： In one aspect of the teachings herein, a transmitter uses a burst numbering scheme to dynamically number the transmit slots comprising a burst transmission on a secondary carrier operated in unlicensed spectrum, where the secondary carrier is time aligned with a primary carrier that operates in licensed spectrum and uses a fixed numbering scheme for its transmit slots. By assigning the transmit slot numbers dynamically, the transmitter has foreknowledge of the transmit slot numbers of the transmit slots within the transmit burst, and can therefore carry out processing that is dependent on the transmit slot number(s) assigned to the transmit slots comprising the burst, even when the burst start time is variable. Correspondingly, a receiver also has foreknowledge of the transmit slot numbers associated with a received burst that was dynamically numbered by a transmitter according to a burst numbering scheme known to the receiver.
摘要翻译： 在本文的教导的一个方面，发射机使用突发编号方案来动态地编号包括在非许可频谱中操作的辅载波上的突发传输的发射时隙，其中辅载波与在许可频谱中操作的主载波时间对准 并为其发送时隙使用固定编号方案。 通过动态地分配发送时隙号，发射机已经知道发射脉冲串内发射时隙的发射时隙号，并且因此可以执行取决于分配给发射时隙的发送时隙号的处理，包括 即使突发开始时间是可变的，也是突发的。 相应地，接收机还具有与由接收机已知的突发编号方案根据由发射机动态编号的接收突发相关联的发射时隙号的预知。
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公开(公告)号：US12069628B2
公开(公告)日：2024-08-20
申请号：US18244993
申请日：2023-09-12
发明人： Peter Alriksson , Tai Do , Reem Karaki , Gen Li , Amitav Mukherjee , Yu Yang
IPC分类号： H04L5/00 , H04W72/04 , H04W72/0446
CPC分类号： H04W72/0446 , H04L5/0007 , H04L5/0053
摘要： A method for use in a User Equipment configured to operate according to the New Radio (5G) standard, said method comprising: monitoring a control region for mini-slots for a transmission; detecting a start of the transmission; monitoring a control region of said transmission for regular slots; detecting that the transmission has ended; and in response thereto monitoring the control region for mini-slots again.
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公开(公告)号：US20240129903A1
公开(公告)日：2024-04-18
申请号：US18244993
申请日：2023-09-12
发明人： Peter Alriksson , Tai Do , Reem Karaki , Gen LI , Amitav Mukherjee , Yu Yang
IPC分类号： H04W72/0446 , H04L5/00
CPC分类号： H04W72/0446 , H04L5/0007 , H04L5/0053
摘要： A method for use in a User Equipment configured to operate according to the New Radio (5G) standard, said method comprising: monitoring a control region for mini-slots for a transmission; detecting a start of the transmission; monitoring a control region of said transmission for regular slots; detecting that the transmission has ended; and in response thereto monitoring the control region for mini-slots again.
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公开(公告)号：US11937308B2
公开(公告)日：2024-03-19
申请号：US17014705
申请日：2020-09-08
发明人： Henrik Sahlin , Amitav Mukherjee
CPC分类号： H04W74/0841 , H04W56/0005 , H04W56/0045 , H04W16/14 , H04W74/002 , H04W74/008
摘要： A contending radio node is configured for attempting contention-based random access. The contending radio node obtains a timing advance sequence that is susceptible to contention. The contending radio node transmits, using the same transmission advancement timing, the timing advance sequence and a contention-resolving identity to a recipient radio node. Responsive to that transmission, the contending radio node receives a response signal that indicates a contention-resolving identity and a timing advance. The contending radio node resolves any contention in its favor when the contention-resolving identity indicated by the response signal corresponds to the contention-resolving identity that the contending radio node transmitted. The contending radio node, responsive to resolving the contention in its favor, adjusts its transmission advancement timing according to the timing advance indicated by the response signal.
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公开(公告)号：US11929833B2
公开(公告)日：2024-03-12
申请号：US17494649
申请日：2021-10-05
发明人： Reem Karaki , Jung-Fu Cheng , Amitav Mukherjee
IPC分类号： H04L1/1812 , H04L1/1607 , H04L5/00 , H04W16/14 , H04W72/04 , H04W72/1263 , H04W72/23 , H04W74/08
CPC分类号： H04L1/1819 , H04L1/1614 , H04L5/0055 , H04W16/14 , H04W72/04 , H04W72/1263 , H04W72/23 , H04W74/0808
摘要： A network node (14) communicates with a wireless device (12) to provide Hybrid Automatic Repeat Request (HARQ) feedback for autonomous uplink transmissions in an unlicensed spectrum. The network node receives a plurality of autonomous uplink transmissions from the wireless device in the unlicensed spectrum, and transmits HARQ feedback for the plurality of autonomous uplink transmissions to the wireless device, the HARQ feedback comprising a bit map of some or all HARQ processes configured for at least one cell (16) and a corresponding bit acknowledgement mapped to each HARQ process.
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公开(公告)号：US11805549B2
公开(公告)日：2023-10-31
申请号：US17584204
申请日：2022-01-25
发明人： Amitav Mukherjee
CPC分类号： H04W74/0808 , H04L5/001 , H04L5/005 , H04L5/0051 , H04L25/0226 , H04L27/2607 , H04W16/14 , H04W72/0453 , H04W72/23
摘要： Systems and methods related to switched carrier Sounding Reference Signal (SRS) transmission in unlicensed spectrum are disclosed. In some embodiments, a method of operation of a User Equipment device (UE) in a wireless system comprises performing uplink Listen-Before-Talk (LBT) on one or more candidate carriers for switched carrier SRS transmission and performing a switched carrier SRS transmission on at least one candidate carrier of the one or more candidate carriers that is determined to be available as a result of performing the uplink LBT on the one or more candidate carriers. In some embodiments, the one or more candidate carriers are carriers other than carriers configured for the UE and on which the UE is scheduled to transmit.
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公开(公告)号：US11729814B2
公开(公告)日：2023-08-15
申请号：US17340252
申请日：2021-06-07
发明人： Amitav Mukherjee , Jung-Fu Cheng , Sorour Falahati , Laetitia Falconetti , Havish Koorapaty , Daniel Larsson
CPC分类号： H04W74/004 , H04W74/006 , H04W74/04 , H04W74/02 , H04W74/0808
摘要： Embodiments herein relate to a method performed by a scheduling node for scheduling an uplink transmission from a wireless device to the scheduling node, which wireless device is connected to a Primary Cell, Pcell, of the scheduling node in a licensed or unlicensed frequency band, and wherein the wireless device is also connected to at least one Secondary Cell, SCell, in an unlicensed frequency band. The scheduling node determines at least one Listen Before Talk. LBT, parameter associated with an LBT procedure and informs the wireless device about the determined at least one LBT parameter in a scheduling grant of the uplink transmission.
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公开(公告)号：US11470641B2
公开(公告)日：2022-10-11
申请号：US17111247
申请日：2020-12-03
摘要： According to some embodiments, a method for use in a user equipment (UE) of transmitting uplink data in unlicensed spectrum comprises receiving, from a network node, an uplink grant comprising an indication of one or more subframes to use for transmitting uplink data. Each subframe comprises a plurality of symbols. The method further comprises obtaining an indication of a listen-before-talk (LBT) type. The LBT type indicates a type of LBT procedure that the UE should perform before transmitting uplink data. The method further comprises determining, using the obtained LBT type, at least one of a starting symbol and a stopping symbol for transmitting uplink data, and transmitting uplink data according to at least one of the determined starting symbol and the determined stopping symbol.
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公开(公告)号：US11363631B2
公开(公告)日：2022-06-14
申请号：US16467007
申请日：2018-04-02
发明人： Reem Karaki , Havish Koorapaty , Jung-Fu Cheng , Sorour Falahati , Yu Yang , Amitav Mukherjee
摘要： A radio access node or wireless device performs LBT on a channel and dynamically determines a transmission starting point on the channel, based on whether the LBT succeeds before or after a slot boundary between a slot n and a previous slot n−1. In response to determining that the LBT succeeds before the slot boundary, a transmission scheduled for the slot n is extended to start earlier, in the previous slot n−1. Otherwise, in response to determining that the LBT succeeds after the slot boundary, either a transmission scheduled for a next slot n+1 is extended to start earlier, in the slot n, or a transmission scheduled for the a second mini-slot of the slot n is extended to start earlier, in a first mini-slot of the slot n.
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