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公开(公告)号：US12010627B2
公开(公告)日：2024-06-11
申请号：US17595973
申请日：2019-06-10
CPC分类号： H04W52/146 , H04W52/367
摘要： Mechanisms are provided for uplink power control of a terminal device. A method is performed in a network serving the terminal device. The method comprises estimating average total uplink transmit power for the terminal device. The method comprises determining a dynamic power threshold from the average total uplink transmit power according to a back-off power control loop. In the back-off power control loop, a setpoint value of total average transmission power is compared with a value of the estimated average total uplink transmit power. The method comprises setting a value of a power regulating parameter as function of the dynamic power threshold. The method comprises providing the value of the power regulating parameter to the terminal device for uplink power control of the terminal device.
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公开(公告)号：US11991734B2
公开(公告)日：2024-05-21
申请号：US17336031
申请日：2021-06-01
发明人： Torbjörn Wigren , Meng Wang
IPC分类号： H04W72/542 , G01S5/02 , G01S5/04 , H04W64/00 , H04W72/044 , H04W72/51
CPC分类号： H04W72/542 , G01S5/02525 , G01S5/0268 , G01S5/04 , H04W64/006 , H04W72/044 , H04W72/51
摘要： A method and a radio access device for performing the method for positioning of a target station (STA) by a radio access device. The method receives sounding feedback, from a target station (STA), for each of a plurality of subbands in response to sending a sounding signal, the sounding feedback comprising channel quality information for each subband of the plurality of subbands. The method calculates an angle-of-arrival (AoA) characteristic from the sounding feedback for at least a subset of the plurality of subbands and maps the AoA characteristics of the at least the subset of the plurality of subbands to a fingerprint in a fingerprint reference map. The method then determines the location of the target STA based on at least the fingerprint.
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公开(公告)号：US11743835B2
公开(公告)日：2023-08-29
申请号：US17438144
申请日：2019-03-28
发明人： Torbjörn Wigren
CPC分类号： H04W52/225 , H04W52/143
摘要： There is provided mechanisms for controlling total average transmission power of a radio base station. A method is performed by a control device. The method comprises performing control of total average transmission power (Ptot)(t) of the radio base station according to a back-off power control loop. In the back-off power control loop, a setpoint value (Ptot)ref of the total average transmission power is compared with a value of the total average transmission power (Ptot)(t)—The value of the total average transmission power (Ptot)(t) is computed over an averaging time T. Control parameters of the back-off power control loop are scaled proportionally to the inverse of the averaging time T. The control parameters pertain to a response time of the back-off power control loop.
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公开(公告)号：US20230266428A1
公开(公告)日：2023-08-24
申请号：US18014524
申请日：2020-07-10
发明人： Torbjörn Wigren
CPC分类号： G01S5/0246 , G01S5/0294 , G01S5/017
摘要： A method of determining a two-dimensional position of a moving wireless device is provided. The method comprises obtaining, for each of three or more base stations, one or more measurements of a carrier frequency offset for one or more signals sent between the moving wireless device and the respective base stations. The method further comprises inputting the carrier frequency offset measurements into a model to determine a two-dimensional position of the moving wireless device, in which inputs to the model do not include range measurements for the moving wireless device with respect to the three or more base stations.
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公开(公告)号：US20230180139A1
公开(公告)日：2023-06-08
申请号：US17924169
申请日：2020-05-13
发明人： Johan Thorebäck , Magnus Nilsson , Torbjörn Wigren , Bo Göransson
CPC分类号： H04W52/225 , H04B17/12 , H04B17/102
摘要： There is provided a method at a network node equipped with an advance antenna system, AAS. The AAS comprises a plurality of antenna elements and one or more radio frequency integrated circuits, RFICs. Each of the one or more RFICs is associated with one or more of the plurality of antenna elements. The method comprising: capturing a plurality of signal samples of one or more signal chains of each of the one or more RFICs. Each of the one or more signal chains correspond to one or more of the plurality of antenna elements and a signal sample is associated with an envelope power level at an output of the respective signal chain; and summing at least a subset of the plurality of signal samples to obtain a short term average power value at the AAS.
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公开(公告)号：US11503548B2
公开(公告)日：2022-11-15
申请号：US17283459
申请日：2018-10-08
发明人： Yali Pei , Jonas Karlsson , Torbjörn Wigren , Yuan Wang
IPC分类号： H04W52/06 , H04B7/06 , H04B7/0452 , H04W52/22
摘要： There is provided mechanisms for determining average total transmission power for an antenna array configured for beamformed transmission within an angular coverage region. A method is performed by a control device. The method comprises determining bin-wise values of beamforming gain for a set of non-overlapping bins collectively covering the angular coverage region of the antenna array. The method comprises obtaining values of total transmission power of the beamformed transmission. The method comprises determining bin-wise values of average transmission power from the bin-wise values of beamforming gain and the values of total transmission power. The method comprises combining the bin-wise values of average transmission power into one value of average total transmission power for the antenna array.
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公开(公告)号：US11486959B2
公开(公告)日：2022-11-01
申请号：US16971138
申请日：2018-12-11
发明人： Torbjörn Wigren
摘要： Systems and methods are disclosed herein that relate to positioning in a cellular communications system. In some embodiments, a method for determining a three dimensional location of a wireless device in a cellular communications network comprises obtaining a plurality of measurements for a wireless device, where the plurality of measurements are Time Difference of Arrival (TDOA) related measurements. The method further comprises computing a three dimensional position of the wireless device using the plurality of measurements and a vertical surface model, wherein the vertical surface model is a translated and scaled version of an initial vertical surface model. The new vertical surface model provides translation and scaling of the initial vertical surface model to a suitable range before it is used to determine the three dimensional position of the wireless device such that accuracy is improved, e.g., in large rural cells.
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公开(公告)号：US11480646B2
公开(公告)日：2022-10-25
申请号：US16971096
申请日：2018-12-11
发明人： Torbjörn Wigren
摘要： Systems and methods for signaling information related to wireless device positioning in a cellular communications network are disclosed. In some embodiments, a method of operation of a first network node for signaling information related to wireless device positioning in a cellular communications network comprises signaling, from the first network node to a second node, information comprising information that relates to a new vertical surface model for a plurality of cells in a cellular communications network. The new vertical surface model is a translated and scaled version of an initial vertical surface model.
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公开(公告)号：US20220191816A1
公开(公告)日：2022-06-16
申请号：US17593345
申请日：2019-03-19
发明人： Torbjörn Wigren , Sholeh Yasini , Iana Siomina
IPC分类号： H04W64/00 , H04L43/0864 , H04L43/106 , H04W24/08
摘要： A method for state estimation of a UE connected to a wireless communication network, comprising obtaining (S1) of measurement information related to a 5 range-related measurement concerning a UE. The measurement information comprises data of the range-related measurement, a time at which the range-related measurement was performed, an identity of the UE and data enabling determination of a measuring position. The range-related measurement consists of data defining a distance between the UE and the measuring 10 position. A state estimation of the UE is performed (S2) based on the measurement information. Methods for propagating the measurement information through the network are also disclosed as well as network nodes performing such method. 15
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公开(公告)号：US11129209B2
公开(公告)日：2021-09-21
申请号：US17055575
申请日：2018-05-16
摘要： A base station for detecting a Physical Random Access Channel (PRACH) transmission from a User Equipment device (UE) comprises a radio device and at least one additional device. The radio device comprises narrowband receivers respectively coupled to antenna elements of an antenna array. Each narrowband receiver is configured to receive a signal from a respective antenna element and process the signal to provide received symbols for a PRACH received via the respective antenna element. The radio device also comprises accumulation circuitry configured to, for each antenna element, accumulate a subset of the received symbols for the PRACH received via the antenna element to output a first averaged symbol for the PRACH received via the antenna element. The at least one additional device is configured to receive, from the radio device, the first averaged symbols and process the first averaged symbols to perform PRACH detection for one or more receive beams.
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