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公开(公告)号：US11848694B2
公开(公告)日：2023-12-19
申请号：US16645526
申请日：2017-12-18
CPC分类号： H04B1/0475 , H04B7/0617 , H04L5/0023 , H04L25/0204 , H04W16/28 , H04W52/243 , H04W72/541
摘要： There is provided mechanisms for interference aware packet transmission. A method is performed by a radio transceiver device. The method comprises obtaining an estimate of interference in a surrounding of the radio transceiver device. The method comprises determining how many symbols for channel estimation to include in a packet to be transmitted based on amount of estimated interference. The method comprises transmitting the packet towards another radio transceiver device, where the packet comprises the determined amount of symbols for channel estimation.
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公开(公告)号：US11716634B2
公开(公告)日：2023-08-01
申请号：US17859737
申请日：2022-07-07
发明人： Peter Alriksson , Tai Do , Reem Karaki , Thomas Nilsson
IPC分类号： H04W16/14 , H04W74/08 , H04B7/0413 , H04L1/18 , H04L1/1812 , H04L1/1867
CPC分类号： H04W16/14 , H04B7/0413 , H04L1/1812 , H04L1/1887 , H04W74/0808
摘要： A network node is arranged to provide communication at least in an unlicensed band where clear channel assessment, CCA, is required before transmissions. The unlicensed band comprises a plurality of carriers, or sets of carriers, defining channels. The network node is arranged to prepare code block groups comprising code blocks from transport blocks, which transport blocks each comprises a payload intended for a respective receiver, wherein each code block comprises a checksum enabling a hybrid automatic repeat request, HARQ, procedure on a per code block group basis, map the code block groups to a wideband signal comprising a consecutive set of channels on the carriers of the unlicensed band, assess whether the channels, respectively, are clear, and transmit the code block groups mapped on the channels which are clear and omit transmissions of code block groups mapped on channels that are not clear, wherein the assessment and the transmissions are performed within a first time interval, and transmit code blocks groups omitted to be transmitted using the HARQ procedure for retransmission prior receiving a non-acknowledgement, NAK, from a respective receiver of the code block group.
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公开(公告)号：US11201704B2
公开(公告)日：2021-12-14
申请号：US15780399
申请日：2018-04-06
发明人： Thomas Nilsson , Peter Alriksson , Jung-Fu Cheng , Tai Do
摘要： Methods and arrangements for determining a next interlace having a next structure to be applied during a next transmission interval in an unlicensed spectrum are disclosed. The next structure is to be applied for a transmission over a wireless interface in a wireless communications network operating in an unlicensed spectrum, wherein a first interlace is applied during transmission in a first transmission interval and wherein the first interlace has a first interlace structure formed by a plurality of physical resource blocks, PRBs, that are arranged with a given subcarrier spacing in one of a set of interlaces. The method includes defining a frequency shift based on the number of PRBs per interlace and a maximum allowed power for a single interlace and determining the next interlace structure by shifting the first interlace structure by the defined frequency shift.
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公开(公告)号：US20210195611A1
公开(公告)日：2021-06-24
申请号：US17196059
申请日：2021-03-09
IPC分类号： H04W72/12
摘要： Embodiments include methods for an access point to schedule wireless communication devices. Such methods include performing link adaptation by assigning respective modulation and coding schemes (MCS) for the wireless communication devices. Each assigned MCS is associated with a corresponding power back-off. Such methods include scheduling the wireless communication devices on transmission resources based on assignment of the wireless communications devices into two or more groups. Each group is scheduled on different transmission resources than used to schedule other groups. First wireless communication devices assigned a first MCS and a first power back-off are assigned to a first group. Second wireless communications devices assigned a second MCS and a second power back-off, and that meet a grouping criterion associated with the first power back-off, are assigned to the first group until a maximum size for the first group is reached. Other embodiments include access points configured to perform such methods.
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公开(公告)号：US20210167805A1
公开(公告)日：2021-06-03
申请号：US17176545
申请日：2021-02-16
摘要： A network node obtains, via a transmission and reception point (TRP) and from a terminal device not served by the network node, a packet comprising channel state information feedback indicating that a further packet is expected to be transmitted from the TRP on a downlink within a predefined time interval. The network node initiates transmission via the downlink of the TRP responsive to the channel state information feedback such that the transmission interferes with an uplink of the terminal device by less than a threshold amount during the predefined time interval.
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公开(公告)号：US20200305170A1
公开(公告)日：2020-09-24
申请号：US16649471
申请日：2017-09-20
摘要： A base station (11) of a wireless cellular communication network operating in unlicensed spectrum adjusts (118) the robustness of a downlink transmission in response to the power level of any interference encountered in the channel and the source of the interference. The base station (11) estimates (110) whether the source of interference encountered is a eLAA or WLAN network (110). An offset to a transmission format—a measure of transmission robustness to noise and interference—is calculated (112) in response to the interference power level and the source of the interference. An initial transmission format is adjusted (118) by the offset, and data are transmitted (120) to a UE using the adjusted transmission format. In other embodiments, the base station (11) may compare its interference to that detected by the target UE, to ascertain whether the two likely have the same source. Similarly, in some embodiments the base station may perform a spatial analysis such as angle of arrival to ascertain whether the source of interference is physically close to the target UE. In these embodiments, the base station may further adjust the transmission format in response to information gleaned about the source of interference.
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7.发明申请公开(公告)号：US20200305112A1
公开(公告)日：2020-09-24
申请号：US16759514
申请日：2017-10-27
发明人： Anna Larmo , Rocco di Taranto , Thomas Nilsson , Dennis Sundman
摘要： A method is disclosed performed by an initiating communication node (110), for facilitating positioning determination in a Wi-Fi communication network (100). The method comprises sending, to a responding communication node (120), a request to start a position-related determination procedure and information of a first plurality of frequency bands over which the initiating communication node (110) is able to communicate. The method further comprises receiving, from the responding communication node (120), second information related to a second number of frequency bands over which the responding communication node (120) is able to communicate, and triggering start of the position-related determination procedure based on the received second information so that the position-related determination procedure is performed over at least one of a third number of frequency bands that occurs in both the first plurality of frequency bands and the second number of frequency bands.
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公开(公告)号：US20200084718A1
公开(公告)日：2020-03-12
申请号：US16319438
申请日：2017-07-14
发明人： Leif Wilhelmsson , Miguel Lopez , Sven Mattisson , Thomas Nilsson
摘要： In one aspect, a transmitting device may frequency-division multiplex a wake-up signature (WUS) targeted to a wake-up receiver (WUR) of a receiving device with user data targeted to a main transceiver of each of one or more other receiving devices into an output signal. The output signal is then transmitted. A receiving device having a WUR and a main transceiver of the receiving device detects, at the WUR, a WUS targeted for the WUR in a received signal. The WUS is frequency-division multiplexed with user data for one or more other receiving devices in the received signal. The receiving device wakes up the main transceiver in response to the detecting.
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公开(公告)号：US20190342762A1
公开(公告)日：2019-11-07
申请号：US16465727
申请日：2016-12-20
发明人： Thomas Nilsson , Leif Wilhelmsson
摘要： A process for selecting frequency channel(s) used by a network node (20) operating in an unlicensed band is disclosed. To that end, a network node (20) analyzes a signal received for each of multiple frequency channels using autocorrelation techniques, and thus without first demodulating the signals, to determine what types of wireless communication devices (32) are contributing to the load of each frequency channel. The network node (20) then selects one of the frequency channels for scheduling communications in the unlicensed band with a wireless communication device (30), where the selection is responsive not only to the estimated load, but also to the identified types of other wireless communication devices (32).
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10.发明申请公开(公告)号：US20180103491A1
公开(公告)日：2018-04-12
申请号：US15108362
申请日：2016-04-28
发明人： Dennis Sundman , Miguel Lopez , Thomas Nilsson , Nafiseh Shariati
CPC分类号： H04W74/0816 , H04W52/0238
摘要： A first communications device 102 and a method therein for transmitting data to a second communications device 104 on a sub-channel. The first device performs carrier sensing on a first sub-channel assigned an unknown occupancy state. When the first sub-channel is determined as being vacant, the first device transmits, to the second device, the data on the first sub-channel. When the first sub-channel is determined as being occupied, the first device assigns the first sub-channel an occupied state, starts a first time period associated with the first sub-channel, and performs carrier sensing on a second sub-channel assigned with the unknown occupancy state. When the second sub-channel is determined as being vacant, the first device transmits, to the second device, the data on the second sub-channel. In absence of the second sub-channel assigned an unknown occupancy state, the first device enters an inactive mode until the first time period has expired.
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