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公开(公告)号：US11962475B2
公开(公告)日：2024-04-16
申请号：US17794176
申请日：2020-02-03
发明人： Martha Vlachou-Konchylaki , Efthymios Stathakis , Arthur Gusmao , Jörg Niemöller , Swarup Kumar Mohalik , Yu Wang
IPC分类号： H04L41/14 , H04L41/147 , H04L41/16
CPC分类号： H04L41/145 , H04L41/147 , H04L41/16
摘要： The properties of a plurality of operational units are estimated by generating a central system state graph model representing the properties of the plurality of operational units as probabilities of transitions between states for the plurality of operational units, where the states represent operational data. Then a respective updated system state graph model is generated for each of the plurality of operational units, based on the central system state graph model and based on new operational data for the respective operational unit. A distance measure is determined between the respective updated system state graph models. If the distance measure fulfils a divergence criterion, a plurality of new central system state graph models are generated, each representing the properties of a respective subset of the plurality of operational units as the probabilities of transitions between states for the respective subset of the plurality of operational units.
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公开(公告)号：US11626941B2
公开(公告)日：2023-04-11
申请号：US17042807
申请日：2018-04-25
IPC分类号： H04L1/1867 , H04L1/1812 , H04W28/02 , H04W28/06
摘要： A method, apparatus and computer-readable mediums relating to the transmission of data packets in a wireless communication network. The method, performed by a node of a wireless communication network, for selecting a feedback scheme associated with transmission of data packets over one or more radio bearers to one or more wireless devices. The method comprises: upon receiving a data packet for transmission to a wireless device, starting a timer associated with the data packet, the timer being set to expire after a period of time which varies as a function of a latency requirement for the data packet; and, in dependence on a remaining time value for the timer, selecting one of a plurality of feedback schemes for transmission of the data packet.
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公开(公告)号：US10681584B2
公开(公告)日：2020-06-09
申请号：US16223379
申请日：2018-12-18
发明人： Kittipong Kittichokechai , Niklas Andgart , Jonas Fröberg Olsson , Alexey Shapin , Efthymios Stathakis , Gustav Wikström
IPC分类号： H04W24/10 , H04L1/00 , H04B17/336 , H04W84/04
摘要： According to some embodiments, a method of reporting channel quality information for use in a wireless device of a wireless communication network comprises: measuring a reference signal to determine a signal to noise ratio; determining a first channel quality index (CQI) using the signal to noise ratio and a first transport block error probability (e.g., BLER); determining a second CQI using the signal to noise ratio and a second transport block error probability; and reporting the first CQI and the second CQI to a network node.
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公开(公告)号：US11297627B2
公开(公告)日：2022-04-05
申请号：US16766971
申请日：2017-12-20
摘要： A method of operating a network node in a Radio Access Network includes configuring a first User Equipment with a first transmission pattern indicating time-frequency resources and configuring a second UE with a second transmission pattern indicating time-frequency resources. The method further includes receiving a first signal comprising a first message from the first UE, using a first time-frequency resource indicated by the first transmission pattern and receiving a second signal comprising a second message from the second UE, using a second time-frequency resource indicated by the second transmission pattern. The first and second time-frequency resources, at least partly, overlap. Further, the method includes decoding the first or the second message, based on a received third signal comprising the first message from the first UE, wherein the third signal is received using a third time-frequency resource indicated by the first transmission pattern.
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公开(公告)号：US11044125B2
公开(公告)日：2021-06-22
申请号：US16645222
申请日：2017-10-10
IPC分类号： H03H7/40 , H04L25/03 , H04B7/0452 , H04L25/02
摘要： A method performed by a node in a wireless communications network for improving multi-user transmissions in the wireless communications network is provided. The node determines channel estimates based on demodulation reference signals, or a data symbol in at least one Physical Resource Block, PRB, of the latest received subframe. Then, the node determines a phase difference and an amplitude difference between Resource Elements, REs, in a first set of contiguous REs in the at least one PRB of the latest received subframe based on the obtained channel estimates. The node then pre-equalizes at least one channel within at least one PRB of a transmission subframe by aligning the phase and amplitude of REs in a second set of contiguous REs therein based on the determined phase and amplitude differences. A node for improving multi-user transmissions in the wireless communications network is also provided.
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公开(公告)号：US11817973B2
公开(公告)日：2023-11-14
申请号：US17419038
申请日：2019-01-04
发明人： Zhao Wang , Efthymios Stathakis
CPC分类号： H04L25/0216 , H04L25/0228 , H04L27/261
摘要： A method and a receiving node for determining a channel window length (l{circumflex over ( )}) for a transformed domain channel estimator, the channel window length (l{circumflex over ( )}) to be applied for a particular reference signal (RS) carrying symbol. At least two subsets (A1, A2, . . . ) of received RS carrying symbols are obtained out of a set of RS carrying symbols ({S1, S2, . . . }), where the particular RS carrying symbol is included in at least one of the at least two subsets (A1, A2, . . . ). A corresponding hypothesis channel window length (l*) is determined for the at least one of the subsets (A1, A2, . . . ) based on a set of channel responses. The channel window length (l{circumflex over ( )}) for the particular RS carrying symbol is then determined based on the corresponding hypothesis channel window length (l*).
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公开(公告)号：US11424872B2
公开(公告)日：2022-08-23
申请号：US16638325
申请日：2018-08-08
摘要： A receiving node in a wireless communication network is operable to determining a process identifier for a repeated transmission by allocating, to a transmitting node, a plurality of resources for use with repeated transmissions, receiving a transmission from the transmitting node where the transmission uses at least one resource from the plurality of resources assigned to the transmitting node for use with repeated transmissions, and determining the process identifier for the transmission based on the at least one resource from the plurality of resources for use with repeated transmissions used by the transmission. Related methods and systems are also disclosed.
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公开(公告)号：US11632760B2
公开(公告)日：2023-04-18
申请号：US16309802
申请日：2018-05-25
发明人： Shaohua Li , Efthymios Stathakis
摘要： Embodiments of the disclosure generally relate to resource configuration. A network device configures, based on an access mode of a terminal device, an information transmission pattern for the terminal device from a first resource set associated with a MOMA mode and a second resource set associated with a NOMA mode.
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公开(公告)号：US11418367B2
公开(公告)日：2022-08-16
申请号：US16772438
申请日：2017-12-14
发明人： Efthymios Stathakis , Zhao Wang
摘要： A method in a wireless receiver for estimating a channel. The method includes receiving a signal comprising a plurality of transmission layers, each layer having at least one reference signal according to a predefined reference signal sequence; determining a window size for performing a sampling operation, wherein the operation is performed in a transformed domain of the received signal; selecting a channel tap length, from a range of channel tap lengths, wherein the selection is based on the window size, a noise mean and a noise variance. The channel estimation is performed from a reference signal sequence for the at least one reference signal and based on samples corresponding to the selected channel tap length.
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公开(公告)号：US20200252170A1
公开(公告)日：2020-08-06
申请号：US16638325
申请日：2018-08-08
发明人： Efthymios Stathakis , Mats Folke , Zhenhua Zou , Gustav Wikström , Ali Behravan , Daniel Larsson
摘要： A receiving node in a wireless communication network is operable to determining a process identifier for a repeated transmission by allocating, to a transmitting node, a plurality of resources for use with repeated transmissions, receiving a transmission from the transmitting node where the transmission uses at least one resource from the plurality of resources assigned to the transmitting node for use with repeated transmissions, and determining the process identifier for the transmission based on the at least one resource from the plurality of resources for use with repeated transmissions used by the transmission. Related methods and systems are also disclosed.
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