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公开(公告)号：US20240187174A1
公开(公告)日：2024-06-06
申请号：US18553880
申请日：2022-04-06
发明人： Mattias Frenne , Andreas Nilsson , Sven Jacobsson
IPC分类号： H04L5/00
CPC分类号： H04L5/0048
摘要： According to some embodiments, a method performed by a wireless device for transmitting a sounding reference signal (SRS) comprises: receiving a SRS configuration for two or more SRS resource sets; determine a first SRS resource set of the two or more SRS resource sets collides with a second SRS resource set of the two or more SRS resource sets; determining not to transmit SRS using the first SRS resource set; and transmitting SRS using the second SRS resource set.
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公开(公告)号：US11973565B2
公开(公告)日：2024-04-30
申请号：US17783192
申请日：2019-12-09
发明人： Andreas Nilsson , Sven Petersson
CPC分类号： H04B7/088 , H04B7/0695 , H04W16/28
摘要： There is provided mechanisms for rotational movement triggered candidate beam updating at a terminal device. A method is performed by the terminal device. The method comprises performing beamformed communication, in a first beam having a first pointing direction, with a transmission and reception point. The method comprises detecting that the terminal device is subjected to a rotational movement. The rotational movement causes the first beam to change its pointing direction. The method comprises updating, upon having detected that the terminal device is subjected to the rotational movement, a candidate set of second beams to be used for beam training. The candidate set of second beams, upon having been updated, comprises at least one second beam having a predefined pointing direction.
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公开(公告)号：US11962378B2
公开(公告)日：2024-04-16
申请号：US17914001
申请日：2020-03-30
发明人： Sven Petersson , Andreas Nilsson
CPC分类号： H04B7/0617 , H04B7/063 , H04B7/10
摘要： There is provided mechanisms for polarized reception of reference signals. A method is performed by a terminal device. The terminal device is equipped with an antenna array having dual-polarized antenna elements. The antenna array is connected to a baseband chain in the terminal device. The method comprises receiving, during a beam management procedure with a TRP, two reference signals transmitted in one OFDM symbol each from the same TRP port within a slot. The two reference signals are received using a filter with a first polarization for a first of the two reference signals and with a second polarization for a second of the two reference signals. The second polarization is orthogonal to the first polarization.
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公开(公告)号：US11956765B2
公开(公告)日：2024-04-09
申请号：US15561107
申请日：2017-07-04
发明人： Andreas Nilsson , Fredrik Athley , Sebastian Faxér
IPC分类号： H04B7/02 , H04B7/04 , H04B7/0408 , H04B7/0456 , H04B7/06 , H04B7/08 , H04W24/08 , H04W56/00 , H04W72/04 , H04W72/044 , H04W72/21 , H04W72/23 , H04W76/11
CPC分类号： H04W72/046 , H04B7/0456 , H04B7/088 , H04W24/08 , H04W72/21 , H04W72/23
摘要： A method for receive (RX) beam switching is provided. The method may be performed by a user equipment (UE) (420). The method includes using a current RX beam (412) to receive a transmission from a network node (422). The method further includes selecting (706) a new RX beam (414) to replace the current RX beam (412). The method further includes, after selecting (706) the new RX beam (414), transmitting (708-710) a channel state information (CSI) report to the network node (422). The method further includes, after selecting (706) the new RX beam (414) and before transmitting (708-710) the CSI report, continuing to use the current RX beam (412) to receive transmissions from the network node (422). The method further includes, after transmitting (708-710) the CSI report to the network node (422), replacing (714) the current RX beam (412) with the new RX beam (414) such that the new RX beam (414) instead of the current RX beam (412) is used to receive transmissions from the network node.
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公开(公告)号：US11949486B2
公开(公告)日：2024-04-02
申请号：US17157353
申请日：2021-01-25
发明人： Andreas Nilsson , Andres Reial
IPC分类号： H04B7/08 , H04B7/0408 , H04B7/06 , H04B17/336 , H04L5/00 , H04L25/02 , H04W24/10
CPC分类号： H04B7/0695 , H04B7/0408 , H04B7/088 , H04B17/336 , H04L5/0051 , H04L25/0204 , H04W24/10
摘要： There is provided mechanisms for beam selection. A method is performed by a first radio transceiver device. The method comprises obtaining link quality estimates of a radio signal conveyed to the first radio transceiver device from a second radio transceiver device by means of at least a first beam taken from a first beam set and a second beam. The second beam is wider than the first beam. The method comprises selecting which one of the first beam and the second beam to use for continued communications of radio signals with the second radio transceiver device in accordance with a comparison between the link quality estimates of the first beam and compensated link quality estimates of the second beam.
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公开(公告)号：US11871396B2
公开(公告)日：2024-01-09
申请号：US17825385
申请日：2022-05-26
发明人： Stephen Grant , Mattias Frenne , Andreas Nilsson , Claes Tidestav
IPC分类号： H04W72/044 , H04B7/022 , H04B7/06 , H04W24/08 , H04B7/08 , H04B7/0404
CPC分类号： H04W72/046 , H04B7/022 , H04B7/0617 , H04B7/0695 , H04B7/086 , H04B7/088 , H04W24/08 , H04B7/0404
摘要： Some embodiments of this disclosure provide a method performed by one or more transmission points, TRPs, for communicating with a user equipment, UE. In some embodiments, the method includes: using a first transmit, TX, beam to communicate with the UE; receiving, from the UE, information indicating that the UE has determined that the first TX beam has experienced a beam failure; and after the information is received, using a second TX beam to communicate with the UE.
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公开(公告)号：US20230319839A1
公开(公告)日：2023-10-05
申请号：US18020092
申请日：2021-08-09
IPC分类号： H04W72/231 , H04W76/20 , H04W72/1273
CPC分类号： H04W72/231 , H04W76/20 , H04W72/1273
摘要： Systems and methods of the present disclosure are directed to a method performed by a wireless communication device. The method includes receiving a configuration of a plurality of TCI states via RRC signaling. The method includes receiving a MAC CE that activates a subset of the plurality of TCI states. The method includes receiving a DCI that indicates one or more of the subset of the plurality of TCI states to be used and explicitly or implicitly indicates one or more particular CORESETs for which the one or more of the subset of the plurality of TCI states are to be used. The method includes using one or more spatial QCL downlink reference signals contained in the one or more of the subset of the plurality of TCI states to receive a PDCCH corresponding to the one or more particular CORESETs.
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公开(公告)号：US11722200B2
公开(公告)日：2023-08-08
申请号：US17560315
申请日：2021-12-23
发明人： Sebastian Faxér , Andreas Nilsson
CPC分类号： H04B7/0695 , H04W52/245 , H04W52/42
摘要： When a TRP performs a TRP beam sweep for a WD with multiple antenna arrangements and the WD is expected to perform an UL transmission (e.g., the WD has at least a threshold amount of data in its transmit buffer) and UL beam selection is based on DL beam selection, in one embodiment the WD takes the available output power of the different antenna arrangements in to account during RSRP calculations for the different candidate TRP TX beams such that the RSRP from an antenna arrangement that has lower available output power is weighted less compared to the RSRP measured from an antenna arrangement that has higher available output power.
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公开(公告)号：US20220352957A1
公开(公告)日：2022-11-03
申请号：US17724935
申请日：2022-04-20
摘要： A method performed in a network node of a communication system for muting antenna elements of an active antenna system. The method comprises determining, based on a priori information relating to performance of the communication system, an antenna element separation between one or more pairs of active antenna elements of at least a subset of all active antenna elements of the active antenna system; and muting at least one antenna element such that the determined antenna element separation is obtained between each of the one or more pairs of active antenna elements of at least the subset of all active antenna elements.
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公开(公告)号：US20220329313A1
公开(公告)日：2022-10-13
申请号：US17635131
申请日：2020-08-06
发明人： Andreas Nilsson
摘要： Systems and methods for beam selection for communication with a Transmit/Receive Point (TRP) are provided. In some embodiments, a method performed by a wireless device for beam selection for communication with a TRP includes: determining how the TRP changes a polarization state for a series of Synchronization Signal Block (SSB) bursts; sweeping through candidate Receive (RX) beams during SSB reception using an order based on how the TRP changes the polarization state; and combining channel measurements from sweeping through the candidate RX beams to determine a target RX beam of the candidate RX beams. In this way, wireless device beam selection can be improved which will improve Downlink (DL) performance. In case the wireless device has beam correspondence, the wireless device RX beam is also likely to be used as the Uplink (UL) Transmit (TX) beam, and in that case UL performance will also be improved.
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