公开(公告)号：US10477437B2

公开(公告)日：2019-11-12

申请号：US15883237

申请日：2018-01-30

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Tamer Kadous ,  Taesang Yoo

IPC: H04W28/26 ,  H04W8/24 ,  H04W16/14 ,  H04W72/04 ,  H04W28/12 ,  H04W74/08

Abstract: Wireless communications systems and methods related to sharing a spectrum using node-specific medium reservation signals are provided. A first wireless communication device a first configuration designated to the first wireless communication device. The first configuration indicates at least one waveform for representing reservation information. The first wireless communication device transmits a reservation signal to reserve a transmission opportunity (TXOP) in a shared spectrum. The reservation signal includes a first waveform representing corresponding first reservation information based on the first configuration. The first waveform is associated with a root sequence and a cyclic-shift value. The first reservation information indicates a transmit power level of the reservation signal. The first reservation information indicates an interference tolerance level of the first wireless communication device. The first reservation information indicates a reserved duration within the TXOP.

公开(公告)号：US20190335500A1

公开(公告)日：2019-10-31

申请号：US16394851

申请日：2019-04-25

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Jing Sun ,  Srinivas Yerramalli ,  Tamer Kadous ,  Yongbin Wei

IPC: H04W74/08 ,  H04W72/04 ,  H04W16/14

Abstract: Aligned listen before talk (LBT) gaps for single operator frame-based equipment (FBE) mode new radio (NR) shared spectrum (NR-SS) is disclosed. Within the FBE mode network, the base station determines a plurality of potential transmission bursts within a fixed frame period. The base station may then reserve a plurality of LBT gaps prior to the starting position of each such transmission burst. The base station communicates the location of each of the LBT gaps to all neighboring network entities and contends for access to the fixed frame period at the beginning of the frame regardless of whether it has data for transmission during the frame. Each neighboring base station that receives the LBT gaps locations will use the same locations in order to align the LBT gaps over the FBE mode network.

公开(公告)号：US20190320424A1

公开(公告)日：2019-10-17

申请号：US16380778

申请日：2019-04-10

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Aleksandar Damnjanovic ,  Xiaoxia Zhang ,  Tamer Kadous ,  Chih-Hao Liu ,  Seyed Ali Akbar Fakoorian ,  Andrei Dragos Radulescu

IPC: H04W72/04 ,  H04L5/00

Abstract: In various aspects, a base station and user equipment (UE) exchange an indication of UE capabilities and a monitoring schedule for the UE to monitor an integer M frequency band partitions for a predetermined signal. The base station performs one or more successful clear carrier assessments (CCAs) on an integer N frequency band partitions of the M frequency band partitions, wherein N

公开(公告)号：US20190312671A1

公开(公告)日：2019-10-10

申请号：US16376895

申请日：2019-04-05

Applicant: QUALCOMM Incorporated

Inventor： Jamie Menjay Lin ,  Siddhartha Mallik ,  Tamer Kadous

IPC: H04L1/00 ,  H04L5/00 ,  H04L27/26 ,  H04L5/02

Abstract: Methods, systems, and devices for wireless communications are described. In accordance with the described techniques, communicating devices (e.g., an encoder and decoder) may apply an orthogonal cover code to a polar codeword to reduce cross-correlation between different codewords. For example, such techniques may reduce power consumption at a decoding device by providing for earlier decoding termination (e.g., as a result of the reduced cross-correlation). Techniques for generating the cover codes (e.g., on a per-aggregation level basis) and applying the cover codes (e.g., within a search space) are described. Additionally or alternatively, the described techniques may relate to seeding of reference signals used to support decoding of the codewords. Improved orthogonality between reference signal seeds may further suppress codeword recipient ambiguity.

公开(公告)号：US10433179B2

公开(公告)日：2019-10-01

申请号：US15787141

申请日：2017-10-18

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Taesang Yoo ,  Siddhartha Mallik ,  Tamer Kadous ,  Vikas Jain ,  Ahmed Sadek

IPC: H04W16/14 ,  H04W16/10 ,  H04B7/06 ,  H04L5/00 ,  H04B7/0413 ,  H04L29/08 ,  H04B7/204 ,  H04W74/08

Abstract: Wireless communications systems and methods related to SDMA operations across multiple network operating entities are provided. A first wireless communication device transmits a communication indicating a reservation for one or more spatial layers in a transmission opportunity (TXOP) of a shared spectrum. The shared spectrum is shared by a first network operating entity and a second network operating entity. The first wireless communication device is associated with the first network operating entity. The first wireless communication device communicates, with a second wireless communication device, data over the one or more spatial layers during the TXOP. The second wireless communication device is associated with the first network operating entity.

公开(公告)号：US20190280836A1

公开(公告)日：2019-09-12

申请号：US16292293

申请日：2019-03-04

Applicant: QUALCOMM Incorporated

Inventor： Kapil Bhattad ,  Jing Sun ,  Xiaoxia Zhang ,  Srinivas Yerramalli ,  Tamer Kadous ,  Yongbin Wei ,  Tao Luo

IPC: H04L5/00 ,  H04W74/08 ,  H04W56/00 ,  H04W72/14 ,  H04W24/10

Abstract: Beam-specific autonomous uplink (AUL) resources may be configured with an associated reference signal for beam management. For example, a base station may configure respective sets of AUL resources that are specific to one or more base station receive beams. These sets of beam-specific AUL resources may be configured to be associated (e.g., quasi co-located (QCL)) with a reference signal, such as a channel state information reference signal (CSI-RS), a synchronization signal burst (SSB), or the like. The base station may periodically transmit the reference signals that are associated with the AUL resources. A user equipment (UE), upon detecting one or more of the reference signals, may identify which set of AUL resources are available for an AUL transmission of uplink data. In such cases, the UE may select a set of AUL resources based on a signal strength of the reference signal associated with that set of AUL resources.

公开(公告)号：US10405335B2

公开(公告)日：2019-09-03

申请号：US15906040

申请日：2018-02-27

Applicant: QUALCOMM Incorporated

Inventor： Sanaz Barghi ,  Jing Sun ,  Mohammad Naghshvar ,  Tamer Kadous

IPC: H04W72/12 ,  H04W16/14 ,  H04B7/0408 ,  H04J11/00 ,  H04L27/00 ,  H04W74/08 ,  H04L1/00 ,  H04L1/20 ,  H04W16/28 ,  H04L27/26 ,  H04L5/00

Abstract: Soft channel reservation in shared spectrum networks is discussed. In network areas where multiple wireless nodes, whether from the same or different network operators, share spectrum using a channel reservation signaling form of contention resolution, an aggressor transmitter listens for a neighbor receiver's receiver channel reservation signal to the neighbor transmitter the neighbor receiver is in communication with. The receiver channel reservation signal includes channel condition information that the aggressor transmitter can use to estimate an interference impact at the neighbor receiver should the aggressor transmitter performs its transmissions to its own receivers. Based on whether this estimated interference impact exceeds or remains within a particular threshold, the aggressor transmitter may decide whether or not to back off of its transmissions until a later time.

公开(公告)号：US20190253219A1

公开(公告)日：2019-08-15

申请号：US16241660

申请日：2019-01-07

Applicant: QUALCOMM Incorporated

Inventor： Zhifei Fan ,  Xiaoxia Zhang ,  Jing Sun ,  Tamer Kadous ,  Qingjiang Tian

IPC: H04L5/00 ,  H04W16/14 ,  H04L27/20

CPC classification number: H04L5/0053 ,  H04L5/001 ,  H04L5/0037 ,  H04L5/0044 ,  H04L5/0092 ,  H04L27/206 ,  H04W16/14 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described. One method may include receiving, by a user equipment (UE) from a base station, a resource allocation indicator corresponding to a total number of resource elements to allocate for uplink control information within a resource allocation of a shared data channel. The UE may determine anchor resources within the resource allocation, and determine a plurality of transmission parameters for an autonomous uplink transmission based on the total number of resource elements. The UE may transmit, to the base station, the uplink control information within the anchor resources to indicate the plurality of transmission parameters for the autonomous uplink transmission.

公开(公告)号：US20190239202A1

公开(公告)日：2019-08-01

申请号：US16258938

申请日：2019-01-28

Applicant: QUALCOMM Incorporated

Inventor： Kapil Bhattad ,  Jing Sun ,  Xiaoxia Zhang ,  Yongbin Wei ,  Tamer Kadous ,  Srinivas Yerramalli ,  Tao Luo

IPC: H04W72/04 ,  H04W76/11 ,  H04W24/08 ,  H04L5/00 ,  H04L1/00 ,  H04W76/27

CPC classification number: H04W72/046 ,  H04L1/0003 ,  H04L5/005 ,  H04W24/08 ,  H04W72/042 ,  H04W76/11 ,  H04W76/27

Abstract: A base station may configure a set of autonomous uplink (AUL) resources for a specific base station receive beam, or the AUL resources may be configured for specific user equipment (UEs) or user groups. Additionally, the AUL resources may be configured to include a sensing portion, a data portion, or both. As an example, a UE may receive an AUL configuration that includes an indication of a set of AUL resources that are specific to a base station receive beam. The UE may then determine that the set of AUL resources is available and perform an AUL transmission of uplink data using the set of beam-specific AUL resources. Additionally or alternatively, the UE may perform the AUL transmission with respective portions that include a sensing signal and the uplink data. The base station may use the sensing signal to determine a receive beam on which to receive the uplink data.

公开(公告)号：US20190238284A1

公开(公告)日：2019-08-01

申请号：US16259992

申请日：2019-01-28

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao Liu ,  Srinivas Yerramalli ,  Tamer Kadous

IPC: H04L5/00 ,  H04L27/26 ,  H04W72/04

CPC classification number: H04L5/0007 ,  H04L5/0083 ,  H04L27/2666 ,  H04W72/0446

Abstract: Methods, systems, and devices for wireless communications are described. A base station may identify a plurality of downlink carriers for a transmission time interval (TTI), e.g., a subframe. The base station may identify a period of inactivity for one or more of the plurality of downlink carriers during the TTI, which may correspond to one or more orthogonal frequency division multiplexing (OFDM) symbols of the subframe. The base station may transmit narrowband reference signals (NB-RSs) over the one or more carriers during the period of inactivity according to a channel reservation narrowband reference signal (NB-RS) pattern. The channel reservation NB-RS pattern may include a first set of time-frequency resources associated with a baseline NB-RS pattern and a second set of supplemental time-frequency resources associated with a period of inactivity.