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公开(公告)号:US11153869B2
公开(公告)日:2021-10-19
申请号:US15889454
申请日:2018-02-06
Applicant: QUALCOMM Incorporated
Inventor: Hao Xu , Peter Gaal , Wanshi Chen , Tingfang Ji , Durga Prasad Malladi , Yongbin Wei , Naga Bhushan , Aleksandar Damnjanovic , Tao Luo
Abstract: Certain aspects of the present disclosure relate to techniques for configuring an adaptive frame structure for wireless communications systems using unlicensed radio frequency spectrum. A base station (BS) may determine whether another device is transmitting on a channel in the unlicensed radio frequency spectrum or one or more other network conditions pertaining to the channel, determine a frame structure from a plurality of frame structures used for data communications based at least in part on the one or more network conditions, wherein each of the plurality of frame structures has a different frame duration, and communicate with a user equipment (UE) using the determined frame structure. A UE may determine a frame structure from a plurality of frame structures used for data communications, wherein each of the plurality of frame structures has a different frame duration, and communicate with a BS using the determined frame structure.
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公开(公告)号:US20210314937A1
公开(公告)日:2021-10-07
申请号:US16841557
申请日:2020-04-06
Applicant: QUALCOMM Incorporated
Inventor: Yi Huang , Wanshi Chen , Peter Gaal , Hwan Joon Kwon , Krishna Kiran Mukkavilli , Wei Yang
Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a downlink transmission via at least one of a primary cell, a secondary cell, or a combination thereof. The UE may identify a feedback indication for the downlink transmission. The UE may transmit a first feedback message that includes the feedback indication via the primary cell. The UE may transmit a second feedback message that also includes the feedback indication via the secondary cell.
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公开(公告)号:US20210314889A1
公开(公告)日:2021-10-07
申请号:US17214538
申请日:2021-03-26
Applicant: QUALCOMM Incorporated
Inventor: Alberto Rico Alvarino , Xiao Feng Wang , Liangping Ma , Ayan Sengupta , Jun Ma , Huilin Xu , Peter Gaal , Bharat Shrestha
Abstract: Non-terrestrial networks (NTNs) may establish uplink (UL) and downlink (DL) radio frame timing structures to efficiently account for propagation delay and propagation delay variation associated with communications in the NTN. NTNs may manage (synchronize) radio frame timing structures of base stations (e.g., satellites) and user equipment (UEs) in the NTN. Further, UEs may determine timing advance (TA) values to be applied to UL transmissions based on their respective scheduling offset (e.g., offset in UL and DL radio frame timing structures), as well as based on propagation delay or round trip time (RTT). As such, served UEs may determine UL timing such that UL transmissions from the UEs to a satellite arrives at the satellite in a time synchronized manner. In other cases, a satellite may determine UL timing, based on reception timing, such that various UEs in the NTN may implement uniform UL and DL radio frame timing structures.
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公开(公告)号:US11140575B2
公开(公告)日:2021-10-05
申请号:US16059892
申请日:2018-08-09
Applicant: QUALCOMM Incorporated
Inventor: Alberto Rico Alvarino , Wanshi Chen , Peter Gaal
Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may identify a coding rate threshold associated with transmitting an uplink control information (UCI) message during a time period, determine whether to reduce a size of the UCI message based on the coding rate threshold, and transmit at least a portion of the UCI message on uplink shared resources allocated for the time period. The UE may determine to reduce the size of the UCI message by dropping portions of the UCI message based on a size of uplink control resources, a size of uplink shared resources, additional parameters signaled to the UE, or some combination of these factors.
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公开(公告)号:US11139931B2
公开(公告)日:2021-10-05
申请号:US15527291
申请日:2015-08-12
Applicant: QUALCOMM Incorporated
Inventor: Chao Wei , Peter Gaal , Wanshi Chen , Hao Xu , Jilei Hou , Neng Wang
Abstract: Methods, systems, and apparatuses are described for flexible transmissions on one or more frequency division duplexing resources. In some aspects, a subset of resources originally allocated for transmissions in a frequency division duplex (FDD) mode of operation associated with a first base station is identified for reallocation, and the identified subset of resources is reallocated to transmissions in a time division duplex (TDD) mode of operation, for example, associated with a second base station.
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公开(公告)号:US11122622B2
公开(公告)日:2021-09-14
申请号:US16805514
申请日:2020-02-28
Applicant: QUALCOMM Incorporated
Inventor: Seyedkianoush Hosseini , Wei Yang , Peter Gaal , Yi Huang , Amir Aminzadeh Gohari , Seyed Ali Akbar Fakoorian
Abstract: Methods, systems, and devices are described for handling transmissions or channels in wireless communications that collide with one another. The described techniques relate to handling the collision between multiple overlapping channels (e.g., two or more channels of the same priority). For example, a collision resolution configuration may include resolving the collisions among the channels of the same priority first (e.g., feedback information transmissions first, and then control information), among the channels of the same service type first (e.g., normal channels first, and then low latency channel(s)), or across all of the channels of all priorities at once. Collisions may be resolved by dropping or rescheduling overlapping information from the lower priority transmission(s) or channel(s) in consideration of the higher priority transmission(s) or channel(s), or by multiplexing or piggybacking overlapping information from a first priority transmission(s) or channel(s) with a second priority transmission(s) or channel(s).
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287.
公开(公告)号:US11122549B2
公开(公告)日:2021-09-14
申请号:US16192482
申请日:2018-11-15
Applicant: QUALCOMM Incorporated
Inventor: Yi Huang , Peter Gaal , Wanshi Chen , Renqiu Wang
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may map channel state information (CSI) to first resource elements that are distributed in frequency, wherein the first resource elements are in a set of resources allocated on an uplink shared channel; map hybrid automatic repeat request (HARQ) feedback to second resource elements that are distributed in frequency, wherein the second resource elements are in the set of resources; wherein the second resource elements are reserved for the HARQ feedback and are different from the first resource elements; and transmit the CSI and the HARQ feedback on the uplink shared channel in accordance with the mappings. Numerous other aspects are provided.
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公开(公告)号:US11122541B2
公开(公告)日:2021-09-14
申请号:US16836460
申请日:2020-03-31
Applicant: QUALCOMM Incorporated
Inventor: Hao Xu , Tao Luo , Tingfang Ji , Wanshi Chen , Peter Gaal , Yongbin Wei , Gavin Bernard Horn
Abstract: The described aspects include methods and apparatus for activating a transmitter to communicate in a wireless network. A small cell can determine to activate the transmitter to serve user equipment (UE) in a wireless network. The small cell can then broadcast a portion of a set of broadcast signals in a radio frame and broadcast a remaining portion of the set of broadcast signals along with the portion of the set of broadcast signals in a subsequent radio frame. By refraining from immediately broadcasting all broadcast signals, the small cell can mitigate interference to other small cells. In addition, a UE can determine whether to generate random access channel (RACH) sequences for proximity determination or uplink timing synchronization based on parameters received in a RACH order. Moreover, a small cell with an active transmitter can decode discovery signals from a device to facilitate handover determination.
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公开(公告)号:US20210282055A1
公开(公告)日:2021-09-09
申请号:US17184377
申请日:2021-02-24
Applicant: QUALCOMM Incorporated
Inventor: Huilin Xu , Kazuki Takeda , Peter Gaal
IPC: H04W28/22
Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a first rate matching resource indication that indicates that a first rate matching resource is available for use by the UE in reception of a downlink shared channel. The UE may also receive a second rate matching resource indication that indicates that a second rate matching resource is not available for use by the UE in reception of the downlink shared channel. The UE may identify a rate matching resource indication conflict arising from an overlap of at least one resource element included in both the first rate matching resource and the second rate matching resource. The UE may then resolve the rate matching resource indication conflict in accordance with a conflict resolution rule.
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公开(公告)号:US11115977B2
公开(公告)日:2021-09-07
申请号:US16369308
申请日:2019-03-29
Applicant: QUALCOMM Incorporated
Inventor: Seyed Ali Akbar Fakoorian , Alberto Rico Alvarino , Peter Gaal , Wanshi Chen , Yongbin Wei , Juan Montojo , Renqiu Wang , Hao Xu , Xiaofeng Wang
Abstract: Aspects of the present disclosure provide techniques for uplink (UL) data channel design. An example method is provided for operations which may be performed by a first apparatus. The example method generally comprises determining a number of pilot symbols to transmit for one or more slots of a first subframe based, at least in part, on a coverage enhancement (CE) level, and transmitting at least one uplink data channel having the determined number of pilot symbols in the one or more slots of the first subframe.
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