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公开(公告)号：US20240248168A1
公开(公告)日：2024-07-25
申请号：US18564233
申请日：2022-05-25
申请人： KOHERENT OY
发明人： Kari LEPPÄNEN , Jussi SALMI
摘要： A method for evaluating a distance between at least a first antenna unit and a second antenna unit by two-way transmission of at least two signals having different circular polarizations between the antenna units. Phase information is determined and used to determine at least a first phase sum and a second phase sum, where the phase sums are further utilized in determination of at least one distance indicator that is indicative of the distance between the first antenna unit and the second antenna unit.
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公开(公告)号：US20220341721A1
公开(公告)日：2022-10-27
申请号：US17764327
申请日：2020-10-02
申请人： KOHERENT OY
发明人： Kari LEPPÄNEN
摘要： An arrangement (100, 200, 300) for monitoring of at least one distance between antenna units, the arrangement comprising at least two antenna units (104, 106, 116, 118, 136, 138), each antenna unit being associated with a radio unit (108, 110), the arrangement additionally comprising at least one radio unit being associated with at least one of the at least two antenna units, and at least one processor. The two antenna units are configured to placed at at least first and second locations, the arrangement being configured to execute at least two measurement cycles wherein during each measurement cycle the arrangement is configured to transmit at least one signal via antenna units one at a time and determine phase information for said signals being received by remaining antenna units. Distance variables determined based on the phase information are used to determine a change in distance between antenna units between measurement cycles.
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公开(公告)号：US20240356688A1
公开(公告)日：2024-10-24
申请号：US18688626
申请日：2022-09-27
申请人： KOHERENT OY
发明人： Kari LEPPÄNEN , Jussi SALMI
IPC分类号： H04L5/00 , H04W72/0453
CPC分类号： H04L5/0005 , H04W72/0453
摘要： A method for performing radio transmissions, including assigning radio units to one subgroup of first radio units, assigning radio units to one subgroup of second radio units, assigning a signal frequency set to each subgroup of first radio units, assigning a signal frequency subset in a signal frequency set of a subgroup of first radio units to each second radio unit in a subgroup of second radio units associated with the subgroup of first radio units, wherein signal frequency subsets assigned to each second radio unit in the same subgroup of second radio units differs from each other in at least one measurement frame, transmitting, via one of the first radio units, a signal of frequencies of the assigned signal frequency set, and transmitting, via one of the second radio units, a signal of frequencies of the assigned signal frequency subset.
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4.发明公开公开(公告)号：US20240205853A1
公开(公告)日：2024-06-20
申请号：US18554554
申请日：2022-04-19
申请人： KOHERENT OY
发明人： Kari LEPPÄNEN , Jussi SALMI
IPC分类号： H04W56/00 , H04W72/0453
CPC分类号： H04W56/0035 , H04W56/0015 , H04W72/0453
摘要： A method for determining a clock offset between local clocks of at least one pair of radio units, includes performing two-way transmissions between at least one pair of radio units using signals including selected frequencies, determining phase information regarding the signals received at the radio units, determining phase differences based on the phase information, determining at least one clock offset variable, and determining an estimated maximum error in the determined clock offset variable based on maximum errors of the phase differences to determine if the maximum error of the determined clock offset variable allows the clock offset value to be unambiguously determined.
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