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公开(公告)号：US20220232517A1
公开(公告)日：2022-07-21
申请号：US17150901
申请日：2021-01-15
Applicant: QUALCOMM Incorporated
Inventor： Chih-Hao LIU , Yisheng XUE , Aleksandar DAMNJANOVIC , Jing SUN , Xiaoxia ZHANG , Rajat PRAKASH , Juan MONTOJO , Tao LUO
Abstract: A first UE in a UE group may determine that a sidelink channel is available for data transmission and transmit SCI reserving a COT on the sidelink channel. A second may receive, from the first UE, the SCI reserving the COT on the sidelink channel and transmitting the sidelink transmission on the sidelink channel using one or more resources of the inter-group sharable resources. The COT may include a first set of resources reserved for the first UE, an intra-group sharable resources capable of being shared by the UE group, and an inter-group sharable resources capable of being shared by the second UE outside of the UE group. The second UE may perform the CAT 1 or CAT 2 LBT procedure to contend for the inter-group sharable resources. The access to the inter-group sharable resources may be limited.
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公开(公告)号：US20220070936A1
公开(公告)日：2022-03-03
申请号：US17445125
申请日：2021-08-16
Applicant: QUALCOMM Incorporated
Inventor： Yisheng XUE , Jing SUN , Xiaoxia ZHANG , Chih-Hao LIU , Peter GAAL , Tao LUO
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine candidate resources on one or more physical sidelink shared channels (PSSCHs) that are clear for transmitting at least two transport blocks, based at least in part on sensing a plurality of subchannels on the one or more PSSCHs with respect to listen-before-talk completion instants for the at least two transport blocks. The UE may select, from among the candidate resources, transmit resources on the one or more PSSCHs for transmitting the at least two transport blocks such that the at least two transport blocks are transmitted in one of: different subchannels of a same slot, or contiguous slots of a same subchannel. The UE may transmit the at least two transport blocks in the transmit resources. Numerous other aspects are provided.
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公开(公告)号：US20220070935A1
公开(公告)日：2022-03-03
申请号：US17443241
申请日：2021-07-22
Applicant: QUALCOMM Incorporated
Inventor： Yisheng XUE , Xiaoxia ZHANG , Jing SUN , Chih-Hao LIU , Shuanshuan WU , Peter GAAL , Ozcan OZTURK , Piyush GUPTA
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may select, for a sidelink transmission over an unlicensed band and associated with a medium access control (MAC) protocol data unit (PDU), one or more candidate resources of a set of candidate resources that are within an adaptive effective contention window (ECW). The UE may adjust at least one parameter of the adaptive ECW to determine an adjusted at least one parameter based at least in part on a channel access output associated with the one or more candidate resources. The UE may transmit the MAC PDU using the one or more candidate resources or an additional one or more candidate resources, wherein the additional one or more candidate resources are selected based at least in part on the adjusted at least one parameter. Numerous other aspects are provided.
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公开(公告)号：US20220029747A1
公开(公告)日：2022-01-27
申请号：US17304426
申请日：2021-06-21
Applicant: QUALCOMM Incorporated
Inventor： Yisheng XUE , Xiaoxia ZHANG , Jing SUN , Chih-Hao LIU
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may transmit, to a second UE via a sidelink sub-channel of a primary carrier, an indication that identifies one or more resources on the primary carrier for transmitting one or more hybrid automatic repeat request (HARQ) responses for one or more sidelink communications between the first UE and the second UE on a secondary carrier; and receive, from the second UE, on the one or more resources on the primary carrier, the one or more HARQ responses for the one or more sidelink communications on the secondary carrier. Numerous other aspects are provided.
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公开(公告)号：US20220022125A1
公开(公告)日：2022-01-20
申请号：US17343225
申请日：2021-06-09
Applicant: QUALCOMM Incorporated
Inventor： Yisheng XUE , Jing SUN , Xiaoxia ZHANG , Ozcan OZTURK , Chih-Hao LIU , Tao LUO , Peter GAAL
Abstract: Wireless communications systems and methods related to channel occupancy management for new radio side-link supporting star topology of user equipment devices are provided. In some aspects, a user equipment (UE) determines a communication resources pool including a channel occupancy ratio (CR) gap of each UE of a plurality of UEs in communication with the first UE, a CR gap of each UE representing a difference between a CR limit of that UE and a CR of that UE, The UE also can communicate, to a second UE of the plurality of UEs, a first CR command configured to allow the second UE to access a first portion of the communication resources pool. In some aspects, an amount of the first portion can be different from an amount of the CR gap of the second UE in the communication resources pool.
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Patent Agency Ranking
公开(公告)号：US20210226734A1
公开(公告)日：2021-07-22
申请号：US16746415
申请日：2020-01-17
Applicant: QUALCOMM Incorporated
Inventor： Seyed Ali Akbar FAKOORIAN , Jing SUN , Xiaoxia ZHANG , Chih-Hao LIU , Srinivas YERRAMALLI
Abstract: A method, an apparatus, a base station, and a user equipment (UE) for wireless communication are provided to reduce the retransmission latency for URLLC communications. Upon receiving a downlink data transmission, a UE waits until it completes decoding of the received downlink data transmission before it can send an ACK/NAK report on the decoded downlink data transmission. In case of a decoding failure, the base station cannot start retransmission until the UE finishes the decoding of the downlink data transmission and sends the ACK/NAK report and until the base station finishes decoding of an NAK in the ACK/NAK report. This considerable retransmission latency may not meet stringent latency requirements of some URLLC applications. A two-stage ACK/NAK reporting is disclosed to reduce the retransmission latency where the UE sends an early ACK/NAK report upon partially completing the decoding of the downlink data transmission.
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公开(公告)号：US20200344775A1
公开(公告)日：2020-10-29
申请号：US16870782
申请日：2020-05-08
Applicant: QUALCOMM Incorporated
Inventor： Chih-Hao LIU , Srinivas YERRAMALLI , Tamer KADOUS
Abstract: In an embodiment, an AP executes a CCA protocol to determine whether to begin transmission within a DMTC window of a radio frame having first and second blocks of subframes. The AP transmits a multi-subframe DRS within the DRS subframes that is scrambled in accordance with a CSI-RS scrambling rule that determines how the second DRS subframe is to be scrambled based on whether the first DRS subframe is included among the first block of subframes or the second block of subframes. At least one UE monitors the DMTC window, and descrambles the CSI-RSs in the multi-DRS subframe based on a CSI-RS descrambling rule that determines how the second DRS subframe is to be descrambled based on whether the first DRS subframe is included among the first block of subframes or the second block of subframes.
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公开(公告)号：US20200052870A1
公开(公告)日：2020-02-13
申请号：US16655095
申请日：2019-10-16
Applicant: QUALCOMM Incorporated
Inventor： Srinivas YERRAMALLI , Chih-Hao LIU , Tamer KADOUS
Abstract: A method, an apparatus, and a computer program for wireless communication that allows for greater scheduling flexibility of physical resources are disclosed. A UE receives information from a base station about a time division duplex (TDD) frame structure of a plurality of frames that include a plurality of subframes. The UE determines a time division duplex (TDD) frame structure for a plurality of frames, where the plurality of frames include a plurality of uplink (UL) subframes and a plurality of downlink (DL) subframes. The UE determines whether a control signaling instance is scheduled during an UL subframe of the plurality of UL subframes, wherein the control signaling instance is scheduled periodically and the control signaling includes at least one of a random access channel, an uplink control channel, a sounding reference signal (SRS), or a scheduling request (SR). The UE communicates the control signaling instance if the control signaling instance is scheduled during an UL subframe.
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29.发明申请公开(公告)号：US20190007946A1
公开(公告)日：2019-01-03
申请号：US15980568
申请日：2018-05-15
Applicant: QUALCOMM Incorporated
Inventor： Srinivas YERRAMALLI , Tamer KADOUS , Chih-Hao LIU , Mostafa KHOSHNEVISAN
Abstract: Some techniques described herein assist a user equipment with acquiring and/or reacquiring, from a base station, a dynamic list of channels to be used for frequency hopping when communicating over an unlicensed radio frequency spectrum band, thereby increasing communication reliability and promoting coexistence in the unlicensed radio frequency spectrum band. Some techniques described herein also assist the user equipment in obtaining the list of channels with low latency (e.g., shortly after the list has changed) and with low power consumption. Numerous other aspects are provided.
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公开(公告)号：US20180310267A1
公开(公告)日：2018-10-25
申请号：US15949978
申请日：2018-04-10
Applicant: QUALCOMM Incorporated
Inventor： Chih-Hao LIU , Srinivas Yerramalli , Tamer Kadous
IPC: H04W56/00
CPC classification number: H04W56/0005 , H04W56/001
Abstract: Methods, systems, and devices for wireless communication are described for synchronization for wideband coverage enhancement. A user equipment (UE) may receive a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) in a subframe of a frame. In one example, the PSS may be received in each of a first plurality of consecutive symbols of the subframe. In another example, the SSS may be received in each of a second plurality of consecutive symbols of the subframe, wherein the second plurality of consecutive symbols is after the first plurality of consecutive symbols within the subframe. The UE may synchronize with a base station based at least in part on the PSS and the SSS received in the subframe. Numerous other aspects are provided.
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