公开(公告)号：US20230085790A1

公开(公告)日：2023-03-23

申请号：US18056621

申请日：2022-11-17

Applicant: QUALCOMM Incorporated

Inventor： Junyi Li ,  Juergen Cezanne ,  Vasanthan Raghavan

IPC: H04W16/28

Abstract: Methods, systems, and devices for wireless communications are described. The described techniques enable a first wireless device (e.g., an integrated access and backhaul (IAB) node in an IAB system) or a network entity (e.g., a centralized unit (CU) in the IAB system) to select a set of wireless devices for communication. The first wireless device, the CU, or both may select the set of wireless devices for communication based on a pathloss mode of the first wireless device, whether an angular separation between a group of nodes (e.g., one or more of the set of wireless devices) is less than an angular separation threshold, or both. The first wireless device may communicate with the set of wireless devices with one or more communications beams. For example, the device may communicate with multiple wireless devices using a single communication beam if the angular separation between the multiple devices is relatively low.

公开(公告)号：US11601925B2

公开(公告)日：2023-03-07

申请号：US17221756

申请日：2021-04-02

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Tao Luo ,  Junyi Li

IPC: H04W72/04 ,  H04W56/00 ,  H04W72/044 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit a first uplink signal to a base station using a first antenna subarray configuration that is associated with a first quasi co-location (QCL) relationship. The UE may determine to switch from using the first antenna subarray configuration to using a second antenna subarray configuration associated with a second QCL relationship based on power, thermal, architectural, or channel conditions, or a combination thereof. The UE may transmit, to the base station, an indication of the second QCL relationship in response to determining to switch subarray configurations. The UE may transmit a second uplink signal using the second antenna subarray to the base station. In some cases, the first QCL relationship and the second QCL relationship may be a QCL-Type A, QCL-Type B, QCL-Type C, or QCL-Type D.

公开(公告)号：US11601245B2

公开(公告)日：2023-03-07

申请号：US17132394

申请日：2020-12-23

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Tao Luo ,  Junyi Li

IPC: H04W24/00 ,  H04W52/16 ,  H04L5/00 ,  H04W4/029 ,  H04W88/08 ,  H04B7/06 ,  H04B17/318 ,  H04W16/14

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to perform positioning determination procedures, such as angle-based positioning procedures, with a base station to determine the position of the UE relative to the base station. To avoid positioning ambiguities that may result from antenna element spacing of an antenna module of the UE at some frequencies, such as mutual coupling or grating lobes, a UE may transmit a capability message indicating the capability of the UE related to the positioning procedures. In some cases, the UE may de-activate one or more antenna elements to increase the spacing between the antenna elements so as to mitigate mutual coupling when transmitting or receiving positioning reference signals. In some cases, the UE may request that the positioning reference signals be scheduled on some frequencies, not scheduled on other frequencies, or both.

公开(公告)号：US11595959B2

公开(公告)日：2023-02-28

申请号：US17148300

申请日：2021-01-13

Applicant: QUALCOMM incorporated

Inventor： Vasanthan Raghavan ,  Tao Luo ,  Junyi Li

IPC: H04W72/04 ,  H04L5/00 ,  H04W76/14 ,  H04W72/044

Abstract: Techniques and devices for wireless communications are described. A first wireless device may establish a communications link with a second wireless device in a first radio frequency spectrum band. When transmitting a beamformed transmission in the first radio frequency spectrum band, an antenna array at the first wireless device may generate a grating lobe. The grating lobe may result in a beam ambiguity when the first wireless device switches to a second radio frequency spectrum band. The first wireless device may receive one or more reference signals from the second wireless device in the second radio frequency spectrum band. The reference signals may include a respective reference signal for each lobe (e.g., a main lobe and one or more grating lobes) identified in the beamformed communications link in the first radio frequency spectrum band. The first wireless device may use the reference signals to resolve the beam ambiguity.

公开(公告)号：US11595094B2

公开(公告)日：2023-02-28

申请号：US17330935

申请日：2021-05-26

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Tao Luo ,  Junyi Li

IPC: H04L1/02 ,  H04B7/06 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. A first device may transmit, to a second device in the wireless network, a first indication of a sequence of one or more beam training phases for a beam training procedure between the first device and the second device. The first device may receive, from the second device, a second indication corresponding to the beam training procedure in response to transmitting the first indication. Both devices may communicate, based on the first and second indications, one or more signals with the second device via one or more communication beams to perform the one or more beam training phases as part of the beam training procedure, the communicating the one or more signals in accordance with the sequence of the one or more beam training phases.

公开(公告)号：US11588563B2

公开(公告)日：2023-02-21

申请号：US17165864

申请日：2021-02-02

Applicant: QUALCOMM Incorporated

Inventor： Bilal Sadiq ,  Naga Bhushan ,  Junyi Li ,  Vasanthan Raghavan ,  Tianyang Bai ,  Joseph Binamira Soriaga ,  Alexandros Manolakos ,  Pavan Kumar Vitthaladevuni ,  Juergen Cezanne

IPC: H04B17/309 ,  H04W24/10 ,  H04B7/06

Abstract: Disclosed are techniques for computing and reporting a relevance metric for a positioning beacon beam. In an aspect, a first node receives, from a second node, a plurality of beams, determines a relevance metric for each of one or more beams of interest from the plurality of beams, wherein the relevance metric for each beam of the one or more beams of interest is based on a time of arrival at the first node of the beam and a signal strength of the beam, and sends, to the second node, a report identifying each of the one or more beams of interest and including the relevance metric for each of the one or more beams of interest.

公开(公告)号：US20220407583A1

公开(公告)日：2022-12-22

申请号：US17351875

申请日：2021-06-18

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Mohammad Ali Tassoudji ,  Tao Luo ,  Junyi Li

IPC: H04B7/08 ,  H04W16/28 ,  H04B7/0456 ,  H04B7/06

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to report feedback to a base station to address polarization impairments in multiple-input multiple-output (MIMO) communications. The UE and the base station may establish a communications link using a pair of orthogonally polarized beams, where the pair of polarized beams may be selected based on a beam sweep procedure. The UE may transmit a report to the base station indicating one or more polarization parameters associated with beam pairs identified in the beam sweep procedure, such as one or more orthogonality parameters, one or more polarization parameters relating to one or more beam pairs, or one or more angular spread parameters. Based on the report, the base station may transmit a beam configuration to the UE for polarization MIMO communications.

公开(公告)号：US20220394561A1

公开(公告)日：2022-12-08

申请号：US17888354

申请日：2022-08-15

Applicant: QUALCOMM Incorporated

Inventor： Junyi Li ,  Juergen Cezanne ,  Vasanthan Raghavan

IPC: H04W28/26 ,  H04W72/04 ,  H04W88/14 ,  H04L5/00 ,  H04W52/24 ,  H04W24/08

Abstract: Methods, systems, and devices for wireless communications are described. The described techniques may enable a first wireless device (e.g., a parent node) to transmit a control message to a second wireless device (e.g., a child node). The control message may include a resource reservation for communication with the second wireless device. The second wireless device may receive the control message and may transmit an acknowledgment message acknowledging successful reception of the resource reservation. The first wireless device may monitor for the acknowledgment message and may communicate with the second wireless device based on whether the acknowledgment message is received. For example, if the first wireless device receives feedback acknowledging successful reception of the resource reservation at the second wireless device, the devices may communicate data in the reserved resources. Otherwise, the first wireless device may retransmit a control message if the first control message was not successfully received.

公开(公告)号：US11496194B2

公开(公告)日：2022-11-08

申请号：US17131560

申请日：2020-12-22

Applicant: QUALCOMM Incorporated

Inventor： Mohammed Hirzallah ,  Arumugam Chendamarai Kannan ,  Srinivas Yerramalli ,  Xiaoxia Zhang ,  Vasanthan Raghavan ,  Tao Luo

IPC: H04B7/06 ,  H04B7/08

Abstract: The present disclosure relates to methods and devices for wireless communication of an apparatus, e.g., a UE and/or a base station. In one aspect, the apparatus may measure a plurality of beams from a base station or a UE, the plurality of beams corresponding to a plurality of subbands of a wideband channel. The apparatus may also determine whether the plurality of beams include one or more candidate beam groups for each subband of the plurality of subbands. Additionally, the apparatus may transmit, upon determining that the plurality of beams include one or more candidate beam groups for at least one subband of the plurality of subbands, an indication of the one or more candidate beam groups for the at least one subband of the plurality of subbands.

公开(公告)号：US11477747B2

公开(公告)日：2022-10-18

申请号：US16806996

申请日：2020-03-02

Applicant: QUALCOMM Incorporated

Inventor： Junyi Li ,  Juergen Cezanne ,  Vasanthan Raghavan

IPC: H04W56/00 ,  H04W76/27 ,  H04W24/08

Abstract: Methods, systems, and devices for wireless communications are described. Different periodicities may be dynamically selected when monitoring and transmitting signaling used for link management, where respective periodicities may be based on the quality of the link between devices. For instance, a first wireless device may use a first monitoring periodicity to monitor for signals transmitted from another wireless device. Upon determining that a link condition has changed (e.g., decreased or reached a threshold), the first wireless device may decrease its monitoring periodicity (and increase monitoring frequency) to detect signals transmitted by the other wireless device more frequently. In such cases, the other wireless device may likewise transmit its measurement signals more often (e.g., in accordance with a second periodicity) based on the link quality. The adjusted monitoring and transmission periodicities may provide additional occasions for the wireless device to detect signals from another device.