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公开(公告)号：US12047212B2
公开(公告)日：2024-07-23
申请号：US17911951
申请日：2020-03-18
发明人： Miguel Lopez , Leif Wilhelmsson
IPC分类号： H04L27/26 , H04B7/0413 , H04L25/02
CPC分类号： H04L27/2602 , H04B7/0413 , H04L25/0202
摘要： A method is disclosed of a transmitter configured to transmit a physical layer packet having a plurality of midambles. The method includes applying a respective phase shift for each midamble of the physical layer packet, and transmitting the physical layer packet. The respective phase shift is applied to at least a portion of symbols of the midamble.
A method is also disclosed of a receiver configured to receive a physical layer packet having a plurality of midambles. The method includes receiving the physical layer packet, and counteracting a respective phase shift for each midamble of the physical layer packet. Counteracting the respective phase shift includes applying an opposite of the respective phase shift to at least a portion of symbols of the midamble or compensating the respective phase shift for at least a portion of symbols of the midamble.
Corresponding apparatuses, and computer program product are also disclosed.-
公开(公告)号：US20240214914A1
公开(公告)日：2024-06-27
申请号：US18288316
申请日：2021-04-26
发明人： Sebastian Max , Leif Wilhelmsson , Miguel Lopez
CPC分类号： H04W48/16 , H04L5/0094 , H04W72/20
摘要： A wireless station (11) associates to an access point (10) of a wireless communication system. The access point (10) operates on a first wireless channel. While the wireless station (11) is associated to the access point (10), the wireless station (11) receives periodically transmitted beacons on one or more second wireless channels, which are different from the first wireless channel, e.g., beacons from other access points (10). Based on the received beacons, the wireless station (11) performs measurements for sensing one or more objects in an environment of the wireless station (11).
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公开(公告)号：US11997661B2
公开(公告)日：2024-05-28
申请号：US17264047
申请日：2018-08-09
发明人： Miguel Lopez , Dennis Sundman
IPC分类号： H04W72/0453 , H04B7/0413 , H04L5/00
CPC分类号： H04W72/0453 , H04B7/0413 , H04L5/0044
摘要： In one example aspect, a method of transmitting signals is provided, the method comprising transmitting signals using one or more first subcarriers only from a first antenna, wherein the signals transmitted from the first antenna comprise first signals based on data, and transmitting signals using one or more second subcarriers different from the one or more first subcarriers only from a second antenna, wherein the signals transmitted from the second antenna comprise second signals based on the data.
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公开(公告)号：US11855785B2
公开(公告)日：2023-12-26
申请号：US17428432
申请日：2020-02-14
IPC分类号： H04L1/18 , H04L1/1825 , H04L1/00 , H04L1/1812 , H04L1/1822 , H04L1/1829 , H04L27/34
CPC分类号： H04L1/1825 , H04L1/0003 , H04L1/0009 , H04L1/0086 , H04L1/1819 , H04L1/1822 , H04L1/1845 , H04L1/1864 , H04L27/3405 , H04L27/3488
摘要： A technique for performing a multi-layer transmission from a transmitting station to a receiving station on a radio frequency is described. The multi-layer transmission comprises multiple layers having different robustnesses (704, 706) on the radio frequency. As to a method aspect of the technique, first data of a first hybrid automatic repeat request, HARQ, process is transmitted on a first layer of the multi-layer transmission simultaneously with second data of a second HARQ process on a second layer of the multi-layer transmission.
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5.发明公开公开(公告)号：US20230362841A1
公开(公告)日：2023-11-09
申请号：US18318069
申请日：2023-05-16
CPC分类号： H04W52/42 , H04W52/285 , H04W74/0808
摘要： Methods, apparatus, and device-readable mediums are disclosed relating to wireless access in a network requiring a carrier-sense mechanism. One aspect provides a method performed by a transmitting device for transmitting to a receiving device in a wireless communications network. The transmitting device comprises a plurality of antenna elements. The method comprises: performing a directional carrier-sense assessment for one or more sub-bands configured for transmissions between the transmitting device and the receiving device, the directional carrier-sense assessment utilizing beamforming to detect a respective level of wireless activity on each of the sub-bands in a particular direction for transmissions to the receiving device; selecting a respective transmit power for each sub-band based on the determined level of wireless activity; and transmitting to the receiving device in the particular direction, using the respective selected transmit power for each sub-band.
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公开(公告)号：US11778560B2
公开(公告)日：2023-10-03
申请号：US17619369
申请日：2020-06-02
发明人： Miguel Lopez , Leif Wilhelmsson
CPC分类号： H04W52/0229 , H04L27/02 , H04L27/2628 , H04L27/2697
摘要： A method for a wireless transmitter is disclosed. The method comprises transmitting a wake-up signal over a frequency range during a time interval by transmitting a first signal part over a first frequency interval within the frequency range during the time interval and transmitting a second signal part over a second frequency interval within the frequency range during the time interval. The first and second frequency intervals are non-overlapping. The first signal part has a first auto-correlation value, and the second signal part is specifically constructed to provide a second autocorrelation value of the signal comprising the first and second signal parts which is lower than the first auto-correlation value. The invention to solve the problem of false detection of an MC-OOK modulated wake-up signal in an IEEE 802.11 system using OFDM.
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公开(公告)号：US11638136B2
公开(公告)日：2023-04-25
申请号：US16250684
申请日：2019-01-17
发明人： Miguel Lopez , Yi-Pin Eric Wang
IPC分类号： H04W4/80 , H04B7/22 , H04L27/20 , H04W24/10 , H04W72/0453
摘要： An apparatus, method and wireless device for fast scanning of a wireless communications medium are disclosed. According to one aspect, a method includes tuning a transceiver of the wireless node to a first frequency. The method further includes computing a first difference frequency, the first difference frequency being a difference between the first frequency and a second frequency. The method further includes generating a first control signal to configure a first backscattering device to switch between at least two states at a switching frequency equal to the first difference frequency.
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公开(公告)号：US20220295333A1
公开(公告)日：2022-09-15
申请号：US17626280
申请日：2019-07-12
摘要： A wireless-local area network access point (101, 102; 800; 1100) sends at least one wake-up packet for activating broadcasting devices (21, 22, 23, 24) in vicinity of the wireless-local area network access point (101, 102; 800; 1100). In response to the at least one wake-up packet, the wireless-local area network access point (101, 102; 800; 1100) receives responses from the broadcasting devices (21, 22, 23, 24). Each response comprises an identifier of the broadcasting device (21, 22, 23, 24) sending the response. The at least one wake-up packet coordinates the sending of the responses by the broadcasting devices (21, 22, 23, 24) with respect to each other.
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公开(公告)号：US20220264458A1
公开(公告)日：2022-08-18
申请号：US17619369
申请日：2020-06-02
发明人： Miguel Lopez , Leif Wilhelmsson
摘要： A method for a wireless transmitter is disclosed. The method comprises transmitting a wake-up signal over a frequency range during a time interval by transmitting a first signal part over a first frequency interval within the frequency range during the time interval and transmitting a second signal part over a second frequency interval within the frequency range during the time interval. The first and second frequency intervals are non-overlapping. The first signal part has a first auto-correlation value, and the second signal part is specifically constructed to provide a second autocorrelation value of the signal comprising the first and second signal parts which is lower than the first auto-correlation value. The invention to solve the problem of false detection of an MC-OOK modulated wake-up signal in an IEEE 802.11 system using OFDM.
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公开(公告)号：US11412542B2
公开(公告)日：2022-08-09
申请号：US16961309
申请日：2018-01-12
摘要： A method for operating an access point providing access to a wireless network for a plurality of wireless devices, wherein the wireless network includes at least one transmission channel with a sequence of transmission slots. The method includes assigning a first transmission slot to a first wireless device for a scheduled transmission with a priority access to the first transmission slot for the first wireless device, detecting during the first transmission slot that the first wireless device is currently not transmitting data in the assigned first transmission slot, and transmitting an indication to at least a subset of the plurality of wireless devices indicating that at least a time range in the first transmission slot until an end of the first transmission slot is available to the plurality of wireless devices for a data transmission using a random access procedure.
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