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公开(公告)号：WO2020068350A1
公开(公告)日：2020-04-02
申请号：PCT/US2019/048727
申请日：2019-08-29
Applicant: QUALCOMM INCORPORATED
Inventor： ZHANG, Xiaoxia , XUE, Yisheng , DAMNJANOVIC, Aleksandar , SUN, Jing , KADOUS, Tamer , WEI, Yongbin
Abstract: Wireless communications systems and methods related to communications with narrowband wireless communication devices over a wide frequency band are provided. A first wireless communication device transmits a first configuration indicating a first set of channel monitoring occasions for a first channel and a second set of channel monitoring occasions for a second channel. The first wireless communication device transmits, in the first channel based on at least a listen- before-talk (LBT) in the first channel, a first occupancy indication signal indicating a first transmission opportunity (TXOP) in the first channel. The first wireless communication device transmits, in the first channel based on the first configuration, a second occupancy indication signal associated with the first TXOP in the first channel during a channel monitoring occasion of the first set of channel monitoring occasions within the first TXOP.
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22.发明申请
公开(公告)号：WO2019231612A1
公开(公告)日：2019-12-05
申请号：PCT/US2019/030623
申请日：2019-05-03
Applicant: QUALCOMM INCORPORATED
Inventor： DAMNJANOVIC, Aleksandar , ZHANG, Xiaoxia , WEI, Yongbin , YERRAMALLI, Srinivas , KADOUS, Tamer , RADULESCU, Andrei Dragos
Abstract: Cell acquisition is disclosed in frequency diversity configured for frame based equipment (FBE) access, such as using opportunistic frequency switching. A user equipment (UE) begins cell acquisition by synchronizing to an available communication channel of an available cell in response to detection of a synchronization signal block (SSB) associated with a network on which the UE communicates. The UE receives system information associated with the available cell from a serving base station, wherein the system information includes identification of at least: a link indicator identifying linked communication channels available for opportunistic switching, sensing occasion offsets for each of the linked channels, and access information associated with each of the linked channels. The UE measures a channel quality for each available channel. The base station transmits this system information on each of the linked channels and then monitors the allocated random access resources for signals from the UEs.
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公开(公告)号：WO2019213383A1
公开(公告)日：2019-11-07
申请号：PCT/US2019/030382
申请日：2019-05-02
Applicant: QUALCOMM INCORPORATED
Inventor： RADULESCU, Andrei Dragos , YERRAMALLI, Srinivas , ZHANG, Xiaoxia , DAMNJANOVIC, Aleksandar , KADOUS, Tamer , SUN, Jing , WEI, Yongbin
Abstract: Scheduling around frame based equipment (FBE) idle periods reduces the flexibility of scheduling and partitioning. This leads to a latency caused by waiting for the next downlink scheduling opportunity and skipping over unused uplink scheduling slots. According to certain aspects, to reduce overhead caused by idle time and ensure full downlink scheduling, a base station (BS) alternates between idle periods and channel occupancy time every fixed frame period with one or more other synchronized BSs, between components carriers of the BS, or both. Thus, a BS can always schedule downlink on a carrier during an idle period scheduled for a different BS and/or a different carrier.
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公开(公告)号：WO2019212924A1
公开(公告)日：2019-11-07
申请号：PCT/US2019/029543
申请日：2019-04-27
Applicant: QUALCOMM INCORPORATED
Inventor： DAMNJANOVIC, Aleksandar , KADOUS, Tamer , WEI, Yongbin , ZHANG, Xiaoxia , YERRAMALLI, Srinivas
Abstract: Wireless communications systems and methods related to coordinating shared radio resources for spectrum sharing are provided. A spectrum resource control unit allocates a first resource for exclusive access by a first network operating entity in a spectrum. The exclusive access is configured for at least one of a network information communication or a feedback communication. The spectrum resource control unit allocates a second resource in the spectrum for shared access by the first network operating entity and a second network operating entity. The shared access is configured for at least a downlink control information communication. The spectrum resource control unit transmits, to the first network operating entity and the second network operating entity, a configuration indicating the first resource allocated for exclusive access by the first network operating entity and the second resource allocated for shared access by the first network operating entity and the second network operating entity.
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公开(公告)号：WO2019112764A1
公开(公告)日：2019-06-13
申请号：PCT/US2018/061193
申请日：2018-11-15
Applicant: QUALCOMM INCORPORATED
Inventor： XUE, Yisheng , ZHANG, Xiaoxia , DAMNJANOVIC, Aleksandar , ZENG, Weiliang , KADOUS, Tamer , WEI, Yongbin
IPC: H04W74/08
Abstract: Methods, systems, and devices for wireless communications are described. A transmitter may identify a contention window for a no-energy-detection protocol for determining a channel availability for a data transmission. After the contention window expires, the transmitter may send a request message to a receiver. The receiver may measure a quality of the request message against a request threshold and transmit a response message if the measured quality exceeds the request threshold. The transmitter may then measure a quality of the response message against a response threshold. If the measured quality exceeds the response threshold, the transmitter may initiate a data transmission with the receiver. If the quality falls below the response threshold or the response message is not received, the transmitter may adjust the contention window and reattempt the no-energy-detection protocol. The contention window may also be adjusted based on an acknowledgement message received after the data transmission.
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Patent Agency Ranking
公开(公告)号：WO2019099530A1
公开(公告)日：2019-05-23
申请号：PCT/US2018/061068
申请日：2018-11-14
Applicant: QUALCOMM INCORPORATED
CPC classification number: H04W74/0816 , H04B7/0695 , H04B17/345 , H04W16/14 , H04W16/28 , H04W24/10 , H04W48/16 , H04W72/046 , H04W72/1236 , H04W74/0808
Abstract: Methods, systems, and devices for wireless communications are described. A wireless device (e.g., a user equipment and/or base station) may select a beam configuration for a wireless transmission over a channel of a radio frequency spectrum band. The wireless device may perform a listen-before-talk (LBT) procedure on the channel using a LBT detection threshold, wherein the LBT detection threshold is based at least in part on the selected beam configuration. The wireless device may perform the wireless transmission over the channel using the selected beam configuration based at least in part on a success of the LBT procedure.
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公开(公告)号：WO2019055137A1
公开(公告)日：2019-03-21
申请号：PCT/US2018/044132
申请日：2018-07-27
Applicant: QUALCOMM INCORPORATED
Inventor： YOO, Taesang , ZHANG, Xiaoxia , SUN, Jing , DAMNJANOVIC, Aleksandar , KADOUS, Tamer
Abstract: Quasi-colocation (QCL) for listen before talk (LBT) procedures is disclosed. A base station having a plurality of antennas may identify one or more groups of QCL antennas. Various aspects provide for different rules defining the QCL relationship, such as base on interference experienced by the antennas, a physical or logical connection of the antennas and LBT coupling, or synchronization. QCL may further be determined across multiple shared channels, such as based on frequency separation or frequency band of the channels. Once grouped as QCL, the base station performs the LBT procedure to reserve access to the one or more shared communication channels. If the LBT is successful, the base station may then transmit a channel reservation preamble on the shared communication channels in response.
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28.发明申请
公开(公告)号：WO2019036231A1
公开(公告)日：2019-02-21
申请号：PCT/US2018/045585
申请日：2018-08-07
Applicant: QUALCOMM INCORPORATED
Inventor： ZHANG, Xiaoxia , DAMNJANOVIC, Aleksandar , SUN, Jing
Abstract: Wireless communications systems and methods related to performing listen-before-talk (LBT) with discovery signal transmissions for spectrum sharing are provided. A wireless communication device senses a channel in a spatial domain based on a plurality of expected beam transmission directions, wherein the wireless communication device is associated with a first network operating entity, and wherein the channel is shared by a plurality of network operating entities including the first network operating entity. The wireless communication device transmits a plurality of discovery signals in one or more of the plurality of expected beam transmission directions during a discovery period to facilitate synchronization in the channel based on the sensing.
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公开(公告)号：WO2019023586A1
公开(公告)日：2019-01-31
申请号：PCT/US2018/044107
申请日：2018-07-27
Applicant: QUALCOMM INCORPORATED
Abstract: Random access channel (RACH) configurations for new radio (NR) shared spectrum (NR-SS) networks are disclosed. A base station may perform a listen before talk (LBT) procedure on a shared communication channel at a beginning of a discovery measurement timing configuration (DMTC) window. In response to a successful LBT, the base station may transmit synchronization signals over a plurality of directional beams according to a predetermined sequence. The user equipment (UE) may determine the predetermined sequence through the detected synchronization signals. The base station may signal configuration of additional random access resources when the LBT procedure delays beyond dedicated random access resources. The base station may then monitor for UEs to transmit random access signals from each direction corresponding to directional beams within the additional random access resources according to the predetermined sequence.
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公开(公告)号：WO2018204083A1
公开(公告)日：2018-11-08
申请号：PCT/US2018/028339
申请日：2018-04-19
Applicant: QUALCOMM INCORPORATED
Abstract: Methods, systems, and devices for wireless communication are described. A wireless device may receive a compressed paging message broadcast from a base station, and transmit a connection request in response. The wireless device may include a paging response indication ( e.g. , indicating the connection request results from a received, false or genuine, paging request) and a wireless device identification ( e.g. , a UE ID) into the modified connection request. The base station may identify the connection request is in response to a paging broadcast by receiving the paging response indication, and determine if the connection request occurred in response to a false paging alert by comparing the received UE ID to the uncompressed paging request message list. If a match is found, the base station may transmit a connection establishment request. If a match is not found the base station may transmit a connection rejection message to the wireless device.
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