公开(公告)号：US12218869B2

公开(公告)日：2025-02-04

申请号：US18128580

申请日：2023-03-30

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Sebastian Faxér ,  Andreas Nilsson

IPC: H04L5/00 ,  H04B7/0456 ,  H04W72/23 ,  G06F3/01 ,  H04J11/00

Abstract: A method, wireless device and network node for performing sounding reference signal (SRS) transmission. According to one aspect a method includes receiving a definition of one or more SRS resource sets to be configured, comprising at least one SRS transmission setting. The method further includes receiving an indication of a selected SRS resource set to use for a SRS transmission, from the one or more configured SRS resource sets and determining a precoding configuration for the SRS transmission based on the selected SRS resource set and the at least one SRS transmission setting. The method also includes transmitting a SRS according to the determined precoding configuration.

公开(公告)号：US12218737B2

公开(公告)日：2025-02-04

申请号：US18219451

申请日：2023-07-07

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： Sven Petersson ,  Fredrik Athley ,  Andreas Nilsson

IPC: H04B7/10 ,  H01P1/10 ,  H01Q3/26 ,  H01Q21/08 ,  H03F3/60 ,  H03F3/72 ,  H04B7/0426 ,  H04B7/06

Abstract: There is presented a wireless device for dual-polarization beamforming. The wireless device comprises an antenna array. The antenna array comprises antenna elements of mutually orthogonal polarizations and a baseband chain. The antenna elements of both polarizations are operatively connected to the baseband chain. There is also presented a method for dual-polarization beamforming as performed by such a wireless device.

公开(公告)号：US12200738B2

公开(公告)日：2025-01-14

申请号：US18552764

申请日：2022-04-05

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： Andreas Nilsson ,  Sven Jacobsson ,  Helka-Liina Määttänen

IPC: H04W72/231 ,  H04L5/00 ,  H04W72/0446 ,  H04W76/20

Abstract: There is provided a method, in a wireless device, for transmitting a reference signal. The method comprises: receiving a configuration via Radio Resource Control (RRC) from a network node, the configuration comprising a list of slot offset values configured for a Sounding Reference Signal (SRS) resource set; receiving Downlink Control Information (DCI) triggering the SRS resource set, wherein the DCI contains a slot offset bitfield for indicating one of the slot offset values in the list of slot offset values and wherein each entry of the list of slot offset values corresponds to a codepoint of the slot offset bitfield; and transmitting a reference signal using SRS resources configured in the triggered SRS resource set based on the indicated slot offset value.

公开(公告)号：US12171016B2

公开(公告)日：2024-12-17

申请号：US17625225

申请日：2019-07-09

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Andreas Nilsson ,  Sven Petersson ,  Fredrik Athley ,  Roy Timo ,  Xinlin Zhang

IPC: H04W72/542 ,  H04L5/00 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/1268

Abstract: There is provided mechanisms for interference handling. A method is performed by a radio access network node. The method comprises obtaining an indication of interference in a time/frequency interval. The method comprises querying a neighbouring radio access network node about scheduling in the time/frequency interval of uplink wireless transmission from any terminal device served by the neighbouring radio access network node. The method comprises receiving a response from the neighbouring radio access network node. The response comprises information identifying uplink reference signal resources/ports, and their scheduling, as to be used by the terminal device scheduled in the time/frequency interval.

公开(公告)号：US20240187174A1

公开(公告)日：2024-06-06

申请号：US18553880

申请日：2022-04-06

Applicant: Telefonaktiebolaget LM Ericsson (PUBL)

Inventor： Mattias Frenne ,  Andreas Nilsson ,  Sven Jacobsson

IPC: H04L5/00

CPC classification number: H04L5/0048

Abstract: 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.

公开(公告)号：US11973565B2

公开(公告)日：2024-04-30

申请号：US17783192

申请日：2019-12-09

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Andreas Nilsson ,  Sven Petersson

IPC: H04B7/02 ,  H04B7/06 ,  H04B7/08 ,  H04W16/28

CPC classification number: H04B7/088 ,  H04B7/0695 ,  H04W16/28

Abstract: 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.

公开(公告)号：US11962378B2

公开(公告)日：2024-04-16

申请号：US17914001

申请日：2020-03-30

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Sven Petersson ,  Andreas Nilsson

IPC: H04B7/06 ,  H04B7/10

CPC classification number: H04B7/0617 ,  H04B7/063 ,  H04B7/10

Abstract: 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.

公开(公告)号：US11956765B2

公开(公告)日：2024-04-09

申请号：US15561107

申请日：2017-07-04

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Andreas Nilsson ,  Fredrik Athley ,  Sebastian Faxér

IPC: 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 classification number: H04W72/046 ,  H04B7/0456 ,  H04B7/088 ,  H04W24/08 ,  H04W72/21 ,  H04W72/23

Abstract: 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.

公开(公告)号：US11949486B2

公开(公告)日：2024-04-02

申请号：US17157353

申请日：2021-01-25

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： Andreas Nilsson ,  Andres Reial

IPC: H04B7/08 ,  H04B7/0408 ,  H04B7/06 ,  H04B17/336 ,  H04L5/00 ,  H04L25/02 ,  H04W24/10

CPC classification number: H04B7/0695 ,  H04B7/0408 ,  H04B7/088 ,  H04B17/336 ,  H04L5/0051 ,  H04L25/0204 ,  H04W24/10

Abstract: 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.

公开(公告)号：US11871396B2

公开(公告)日：2024-01-09

申请号：US17825385

申请日：2022-05-26

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Stephen Grant ,  Mattias Frenne ,  Andreas Nilsson ,  Claes Tidestav

IPC: H04W72/044 ,  H04B7/022 ,  H04B7/06 ,  H04W24/08 ,  H04B7/08 ,  H04B7/0404

CPC classification number: H04W72/046 ,  H04B7/022 ,  H04B7/0617 ,  H04B7/0695 ,  H04B7/086 ,  H04B7/088 ,  H04W24/08 ,  H04B7/0404

Abstract: 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.