Channel sensing techniques for wireless networks

    公开(公告)号:US12082248B2

    公开(公告)日:2024-09-03

    申请号:US17753049

    申请日:2019-09-04

    CPC classification number: H04W74/0808

    Abstract: According to an example embodiment, a method may include determining, by a wireless node in a cell, a silent resource pattern for each of a plurality of signal waveform types including at least a single carrier waveform type and a multicarrier waveform type, wherein each silent resource pattern identifies one or more resource elements that are indicated as unused by at least one node of the cell for the signal waveform type; determining, by the wireless node, whether a signal waveform type, of the plurality of signal waveform types, for channel sensing is known by the wireless node; performing, by the wireless node if a signal waveform type for channel sensing is known by the wireless node, channel sensing based on a silent resource pattern for a known signal waveform type for channel sensing of the plurality of signal waveform types; and otherwise, performing, by the wireless node if the signal wave form type for channel sensing is not known by the wireless node, channel sensing based on a silent resource pattern for each of a plurality of the signal waveform types.

    Uplink bandwidth part switching on new radio unlicensed

    公开(公告)号:US11477818B2

    公开(公告)日:2022-10-18

    申请号:US17045464

    申请日:2018-04-06

    Abstract: In accordance with an example embodiment of the invention there is at least a method and apparatus to perform determining, by a network node, that at least one of frequency tuning, bandwidth part switching, or bandwidth switching is to be performed by at least one user equipment; and based on the determining, sending, by the network node, to the at least one user equipment one or more downlink slots, wherein the one or more downlink slots provide an indication of a time to perform the at least one of frequency toning, bandwidth part switching, or bandwidth switching by the at least one user equipment. Further, in accordance with another example embodiment of the invention there is at least a method and apparatus to perform receiving from a network node, by a user equipment, one or more downlink slots, wherein the one or more downlink slots comprises at least one of an uplink grant, a downlink assignment, and wherein the one or more downlink slots provide an indication of a time to perform at least one of a frequency tuning, bandwidth part switching, and bandwidth switching by at least one user equipment; based on the one or more downlink slots, performing, by the user equipment, the at least one of frequency tuning, bandwidth part switching, or bandwidth switching, and transmitting, by the user equipment, at least one uplink channel or a signal via a radio frequency chain based on the at least one of frequency tuning, bandwidth part switching, or bandwidth switching.

    Uplink channel scheduling to retain channel occupancy for unlicensed wireless spectrum

    公开(公告)号:US11452124B2

    公开(公告)日:2022-09-20

    申请号:US16946598

    申请日:2018-01-12

    Abstract: A technique includes receiving, by a user device, a configuration of a set of one or more resources for an uplink channel to be used for transmission by the user device in a slot prior to a short physical uplink control channel of the slot; receiving, by the user device, a downlink control information including a downlink assignment for a downlink channel; identifying, by the user device based on the downlink assignment, a resource of the set of one or more resources for the uplink channel, and a physical uplink control channel; and transmitting, by the user device, a signal via the identified resource for the uplink channel, prior to the short physical uplink control channel of the slot.

    RADIO RESOURCE MANAGEMENT
    4.
    发明申请

    公开(公告)号:US20220217720A1

    公开(公告)日:2022-07-07

    申请号:US17595239

    申请日:2019-05-13

    Abstract: In an example, there is provided an apparatus configured to store a bandwidth part arrangement of the bandwidth part (301, 305, 307) into plural physical resource blocks which are grouped into bundles forming a bundle grid (330-370), the bandwidth part (301, 305, 307) comprising at least one guard band (320), determine at least one of the bundles as partially overlapping with the at least one guard band (320), each partially overlapping bundle comprising overlapping and non-overlapping physical resource blocks, and to at least one of: 1) re-assign at least one of the non-overlapping physical resource blocks to a non-overlapping bundle immediately preceding or immediately following, in the bundle grid (330-370), the partially overlapping bundle, 2) re-align a first physical resource block of the non-overlapping bundle immediately following the partially overlapped bundle to coincide with a guard band end, and 3) re-align a last physical resource block of the non-overlapping bundle immediately preceding the partially overlapped bundle to coincide with a guard band (320) start.

    Wideband communications based on availability assessment

    公开(公告)号:US12010722B2

    公开(公告)日:2024-06-11

    申请号:US17422981

    申请日:2019-02-01

    CPC classification number: H04W74/0808 H04L27/0006 H04W72/0453 H04L5/001

    Abstract: Example embodiments relate to wideband communications based on availability assessment. A method for communication comprises performing availability assessment on a set of configured frequency subbands to obtain an availability result, the availability result indicating that at least one of the set of configured frequency subbands is available for a period of time for transmission of intended information and transmitting supplementary information that has been prepared using the at least one frequency subband during a first portion of time within the period of time. The method also comprises preparing the intended information based on the availability result and transmitting the prepared intended information using the at least one frequency subband during a second portion of time following the first portion of time within the period of time. As such, the processing of the intended information can be adapted depending on the dynamic available subband(s) indicated by the availability result.

    HARQ FEEDBACK ON GRANT-LESS UL
    7.
    发明申请

    公开(公告)号:US20200213043A1

    公开(公告)日:2020-07-02

    申请号:US16475437

    申请日:2017-12-13

    Abstract: In accordance with an example embodiment of the present invention, a method, comprising receiving, by a user equipment, information for configuration with Grant-less Uplink Physical Uplink Shared Channel (GUL PUSCH) resources; attempting to transmit, by the user equipment, Hybrid Automatic Repeat Request (HARQ) feedback on at least one resources; performing a channel access procedure for transmitting Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK) on the GUL PUSCH resources in response to a determination that the attempting to transmit the HARQ feedback on the at least one resources is unsuccessful; and transmitting HARQ-ACK on the GUL PUSCH resources in response to successfully completing the channel access procedure, is disclosed.

    DYNAMIC CODEBOOK ADAPTATION FOR ENHANCED CARRIER AGGREGATION

    公开(公告)号:US20180098345A1

    公开(公告)日:2018-04-05

    申请号:US15564051

    申请日:2016-04-05

    Abstract: A method and apparatus may include determining, by a network node, a plurality of carrier groups. The method may also configuring a user equipment to use the plurality of carrier groups. The method may also include incrementing a downlink assignment index from one scheduled carrier group to another. The downlink assignment index is included with each downlink assignment of a plurality of downlink assignments. The method may also include transmitting the plurality of downlink assignments to the user equipment. Each of the plurality of downlink assignments schedules a downlink channel on a carrier belonging to one of the plurality of carrier groups.

    Resource determination for communicating uplink control signal in wide bandwidth deployments

    公开(公告)号:US12232118B2

    公开(公告)日:2025-02-18

    申请号:US17266743

    申请日:2020-01-02

    Abstract: Solutions for determining a resource for transmitting/detecting an uplink (UL) control signal are proposed. For example, a method includes receiving a physical resource configuration and/or an assigned resource indicator for transmitting the UL control signal, wherein the physical resource configuration indicates a plurality of resources in frequency domain. The method also includes determining a resource based on the received physical resource configuration and/or the assigned resource indicator; and adjusting the determined resource for transmitting the UL control signal based on at least one of an outcome of downlink (DL) listen before talk (LBT) performed prior to the transmission of the UL control signal, an outcome of UL LBT performed prior to the transmission of the UL control signal, and a time gap between the UL LBT and the transmission of the UL control signal.

    Apparatus, method, and computer program for scheduling transmissions

    公开(公告)号:US12227160B2

    公开(公告)日:2025-02-18

    申请号:US17498690

    申请日:2021-10-11

    Abstract: A method may include, by an apparatus, sensing at least one beam; initiating a channel occupancy time based on the sensing; transmitting at least one first downlink transmission on the at least one beam during the channel occupancy time, wherein the at least one first downlink transmission on the at least one beam triggers at least one first uplink transmission on the at least one beam during the channel occupancy time; receiving the at least one first uplink transmission on the at least one beam during the channel occupancy time; determining interference condition on the at least one beam based on the at least one first uplink transmission; and scheduling at least one second downlink transmission or at least one second uplink transmission on the at least one beam with restriction during a rest of the channel occupancy time when the interference condition meets at least one threshold requirement.

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