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81.发明授权公开(公告)号：US10341962B2
公开(公告)日：2019-07-02
申请号：US15520005
申请日：2017-04-10
Applicant: Telefonaktiebolaget LM Ericsson (publ)
Inventor： Sven Petersson , Fredrik Athley , Andreas Nilsson , Andres Reial
IPC: H04W52/24 , H04W52/32 , H04W52/42 , H04W72/04 , H04L5/00 , H04L25/02 , H04B17/318 , H04B7/06 , H04W72/08
Abstract: A wireless device (12) is configured to transmit a signal simultaneously from a group (104) of physical antenna ports (106), based on associating disjoint frequency sub-bands with respective ones of the physical antenna ports (106). The frequency sub-bands collectively span a frequency bandwidth and each physical antenna port (106) supports transmission over the frequency bandwidth and has a per-port transmit power associated therewith. The wireless device (12) is configured to transmit the signal further based on allocating the per-port transmit power of each physical antenna port (106) in the group (104) only to frequency elements of the signal that fall within the frequency sub-band associated with the physical antenna port (106). A radio network node (10) in a network (16) is configured to perform channel estimation based on receiving a reference signal from the wireless device (12) and its channel estimation accounts for channel changes that may appear at the border between two frequency sub-bands.
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公开(公告)号：US20190103949A1
公开(公告)日：2019-04-04
申请号：US16195959
申请日：2018-11-20
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventor： Robert Mark Harrison , Sebastian Faxér , Andreas Nilsson , Sven Petersson
IPC: H04L5/00 , H04W72/04 , H04B7/0456
CPC classification number: H04L5/0048 , H04B7/0456 , H04L5/0023 , H04L5/005 , H04L5/0092 , H04L5/1469 , H04W72/0413 , H04W72/046
Abstract: A method of identifying reference signal resources to be used in a transmission by a wireless device is disclosed. The method comprises a wireless device receiving signaling configuring the wireless device with a plurality of reference signal resource groups, each group comprising a plurality of reference signal resources. The wireless device subsequently receives an indication, in a control channel, of a selection of reference signal resources to be used. Each of the plurality of reference signal resources to be used is selected from a different one of the plurality of reference signal resource groups such that reference signal resources belonging to the same reference signal resource group are not selected for simultaneous use. A reference signal is then transmitted to a network node in the network using the indicated selection of reference signal resources.
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公开(公告)号：US20180343044A1
公开(公告)日：2018-11-29
申请号：US15537030
申请日：2017-05-23
Applicant: Telefonaktiebolaget LM Ericsson (publ)
Inventor： Fredrik ATHLEY , Andreas Nilsson , Sven Petersson
IPC: H04B7/06 , H04B7/0417 , H04L25/02
CPC classification number: H04B7/0617 , H04B7/0417 , H04B7/0469 , H04B7/0626 , H04B7/0634 , H04B7/0695 , H04B7/088 , H04L5/0048 , H04L25/0202 , H04L25/0206
Abstract: There is provided mechanisms for obtaining channel conditions per antenna element of an antenna array comprising N antenna elements. The antenna array is configured for communications using orthogonal sub-carriers. A method is performed by a radio transceiver device. The method comprises obtaining channel conditions of a radio propagation channel per sub-carrier for signals received on the sub-carriers by the antenna array. A set of receiving entities are associated with the sub-carriers in an interleaved manner such that each receiving entity is interleaved over a respective disjoint subset of sub-carriers. The method comprises transforming the channel conditions at least for those sub-carriers located within a coherence bandwidth of the radio propagation channel to channel conditions for the N antenna elements by using a relation that maps the receiving entities to the N antenna elements.
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公开(公告)号：US10020578B2
公开(公告)日：2018-07-10
申请号：US15307236
申请日：2014-04-28
Applicant: Telefonaktiebolaget LM Ericsson (publ)
Inventor： Andreas Nilsson , Sven Petersson
CPC classification number: H01Q3/2605 , H01Q1/246 , H01Q3/36 , H01Q21/0006 , H01Q21/08
Abstract: An antenna arrangement comprising an even number E>3 of antenna elements 210, 210′, connected to steerable phase shifters 211, and a number C=(E/2)*(E/2+1)/2 of hybrid couplers 212, as well as a number of E antenna arrangement ports 213 configured as an interface to the antenna arrangement. Hybrid coupler ports of a bottommost tier 218 of hybrid couplers 212 are connected to respective antenna arrangement ports 213, and hybrid couplers in an overlaying at least one tier 219 are connected to hybrid couplers in a tier immediately below. Unconnected hybrid coupler ports are connected directly to the first antenna element 210′ or to one of the other antenna elements 210.
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公开(公告)号：US20180026362A1
公开(公告)日：2018-01-25
申请号：US15543059
申请日：2015-01-29
Applicant: Telefonaktiebolaget LM Ericsson (publ)
Inventor： Andreas Nilsson , Henrik Asplund , Martin Johansson , Claes Tidestav
CPC classification number: H01Q3/005 , H01Q3/2611 , H01Q3/36
Abstract: The present disclosure relates to a wireless communication node (1) comprising at least one antenna arrangement (2, 2′, 2″). Each antenna arrangement (2, 2′, 2″) comprises at least one antenna port (3), at least two antenna elements (4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b) arranged for providing an antenna beam pattern (8), and a phase control arrangement (9, 9′, 9″) arranged to receive at least one input signal (10) via said antenna port (3) and to determine a plurality of intermediate signal components (11) from said input signal (10) by determining a first set of respective phase shifts (φ1, φ2, 10 φ3, φ4; θ1, θ2, θ3, θ4, θ5, θ6, θ7, θ8) for said input signal (3). The phase control arrangement (9) is further arranged to determine a final signal component (12) for each antenna element (4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b) from said intermediate signal components (12) by determining a second set of respective phase shifts (β1, β2, β3, β4: Φ1, Φ2, Φ3, Φ4, Φ5, Φ6, Φ7, Φ8) for said intermediate signal components (12), wherein the second set of phase shifts (β1, β2, β3, β4; Φ1, Φ2, Φ3, Φ4, Φ5, Φ6, Φ7, Φ8) is arranged to provide a lowered gain of the antenna arrangement (2, 2′, 2″) in at least one direction (D). The present disclosure also relates to a corresponding method.
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公开(公告)号：US20240348311A1
公开(公告)日：2024-10-17
申请号：US18585658
申请日：2024-02-23
Applicant: Telefonaktiebolaget LM Ericsson (publ)
Inventor： Andreas Nilsson , Fredrik Athley
CPC classification number: H04B7/0695 , H04B7/0632 , H04B7/088 , H04L5/0051
Abstract: Mechanisms for beam management. An example method, in a network node, comprises transmitting a reference signal so as to enable each of the terminal devices participating in a first part of the beam management procedure to identify in which of a first set of beams the reference signal is received with highest power. The method comprises transmitting the reference signal in a second part of the procedure so as to enable each of the terminal devices to identify in which of a second set of beams the reference signal is received with highest power. The method comprises transmitting the reference signal during a third part of the procedure so as to enable each of the terminal devices to identify in which of a third set of beams the reference signal is received with highest power. There is one third set for each beam in the first set.
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公开(公告)号：US12088373B2
公开(公告)日：2024-09-10
申请号：US17329970
申请日：2021-05-25
Applicant: Telefonaktiebolaget LM Ericsson (publ)
Inventor： Stephen Grant , Mattias Frenne , Eleftherios Karipidis , Andreas Nilsson
CPC classification number: H04B7/0617 , H04B7/0626 , H04L5/0051 , H04W24/08 , H04W24/10 , H04W72/23
Abstract: In a multi-BPL scenario, some form of beam-related indication is desirable to provide assistance to the UE in setting its Rx spatial filtering configuration to receive PDSCH. The assistance to the UE is in the form of a certain indicator indicating a spatial QCL assumption between PDSCH DMRS antenna port(s) and DL RS (e.g., CSI-RS) antenna port(s), such as a preferred CSI-RS resource that was measured and reported previously.
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公开(公告)号：US12047130B2
公开(公告)日：2024-07-23
申请号：US17492152
申请日：2021-10-01
Applicant: Telefonaktiebolaget LM Ericsson (publ)
Inventor： Sven Petersson , Fredrik Athley , Andreas Nilsson , Roy Timo , Xinlin Zhang
IPC: H04B7/06 , H04B7/0404 , H04B7/0456 , H04L5/00 , H04L25/02
CPC classification number: H04B7/0404 , H04B7/0469 , H04B7/0608 , H04B7/0617 , H04B7/0697 , H04L5/005 , H04L25/0226
Abstract: There is provided mechanisms for transmission of reference signals. A method is performed by a terminal device. The terminal device comprises at least two physical antenna ports. The method comprises creating a virtual antenna port for, and applied over, at least two of the physical antenna ports. The method comprises transmitting, in the virtual antenna port, as many uplink reference signals as there are physical antenna ports.
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公开(公告)号：US12021779B2
公开(公告)日：2024-06-25
申请号：US17981827
申请日：2022-11-07
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventor： Robert Mark Harrison , Sebastian Faxér , Andreas Nilsson , Sven Petersson
IPC: H04L5/00 , H04B7/0456 , H04W72/21 , H04L5/14 , H04W72/044
CPC classification number: H04L5/0048 , H04B7/0456 , H04L5/0023 , H04L5/005 , H04L5/0092 , H04W72/21 , H04L5/1469 , H04W72/046
Abstract: A method of transmitting an uplink transmission by a wireless device is disclosed. The method comprises a wireless device receiving signaling configuring the wireless device with a plurality of Sounding Reference Signal (SRS) resources. The wireless device subsequently receives an indication, in a physical layer downlink control channel, of a selected plurality of SRS resources selected from among the plurality of configured SRS resources and transmits a plurality of multiple-input multiple-output (MIMO) layers of a PUSCH transmission. The selected plurality of SRS resources map to respective ones of the plurality of MIMO layers and the indication of the selected plurality of SRS resources includes SRS resource indexes with a fixed order that corresponds to an order in which the SRS resources of the selected plurality of SRS resources are mapped to the MIMO layers.
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公开(公告)号：US11943034B2
公开(公告)日：2024-03-26
申请号：US17871193
申请日：2022-07-22
Applicant: Telefonaktiebolaget LM Ericsson (publ)
Inventor： Andreas Nilsson , Fredrik Athley
CPC classification number: H04B7/0695 , H04B7/0632 , H04B7/088 , H04L5/0051
Abstract: Mechanisms for beam management. An example method, in a network node, comprises transmitting a reference signal so as to enable each of the terminal devices participating in a first part of the beam management procedure to identify in which of a first set of beams the reference signal is received with highest power. The method comprises transmitting the reference signal in a second part of the procedure so as to enable each of the terminal devices to identify in which of a second set of beams the reference signal is received with highest power. The method comprises transmitting the reference signal during a third part of the procedure so as to enable each of the terminal devices to identify in which of a third set of beams the reference signal is received with highest power. There is one third set for each beam in the first set.
