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公开(公告)号：US20240031976A1
公开(公告)日：2024-01-25
申请号：US18365123
申请日：2023-08-03
Applicant: QUALCOMM Incorporated
Inventor： Chang-Sik CHOI , Kapil GULATI , Gene Wesley MARSH
CPC classification number: H04W64/003 , H04L5/0051 , H04W92/18
Abstract: Aspects relate to group-based positioning reference signal (PRS) broadcast in a wireless communication network. Wireless communication devices communicating over a sidelink channel in the wireless communication network may be grouped into one or more positioning groups. Within each positioning group, a respective order of the wireless communication devices in the positioning group may be identified. The wireless communication devices in a positioning group may then communicate PRSs therebetween over the sidelink channel based on the order of wireless communication devices in the positioning group.
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公开(公告)号：US20220272484A1
公开(公告)日：2022-08-25
申请号：US17184429
申请日：2021-02-24
Applicant: QUALCOMM Incorporated
Inventor： Chang-Sik CHOI , Kapil GULATI , Junyi LI
IPC: H04W4/02
Abstract: Independent ranging sessions that are initiated by multiple initiating user equipments (UEs) are monitored and combined into a single combined ranging session to reduce overhead. A UE monitors a first set of ranging sessions initiated by a first initiator UE, which include pre-ranging messages identifying UEs in the first set of ranging sessions, and monitors a second set of ranging sessions initiated by a second initiator UE, which include pre-ranging messages identifying UEs in the second set of ranging sessions. The UE initiates a third set of ranging sessions by broadcasting pre-ranging messages identifying UEs in the third set of ranging sessions that comprises the UEs in the first set of ranging sessions and the UEs in the second set of ranging sessions. The original initiator UEs, upon receiving the pre-ranging messages initiating the third set of ranging sessions, terminate the initiation of their ranging sessions.
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公开(公告)号：US20220236396A1
公开(公告)日：2022-07-28
申请号：US17160022
申请日：2021-01-27
Applicant: QUALCOMM Incorporated
Inventor： Chang-Sik CHOI , Kapil GULATI , Junyi LI
IPC: G01S13/42
Abstract: A UE includes: a wireless transceiver; a directional, reflection-based ranging system configured to determine directions and distances between the UE and reflectors; and a processor configured to: obtain, from the ranging system (1) a first direction, between the UE and a particular reflector, and (2) a first distance, between the UE and the particular reflector, corresponding to the first direction; determine, based on a positioning reference signal (PRS) received by the wireless transceiver from a PRS source (3) a second direction, corresponding to an angle of arrival of the PRS at the UE, and (4) a second distance, traveled by the PRS from the PRS source to the UE, corresponding to the second direction; and determine whether the second distance is a line-of-sight distance between the UE and the PRS source based on the first direction, the first distance, the second direction, and the second distance.
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公开(公告)号：US20210392454A1
公开(公告)日：2021-12-16
申请号：US16901915
申请日：2020-06-15
Applicant: QUALCOMM Incorporated
Inventor： Chang-Sik CHOI , Kapil GULATI , Sudhir BAGHEL
IPC: H04W4/02 , H04W4/40 , B60W40/105 , B60W40/107 , B60W40/06
Abstract: A user equipment in a vehicle (V-UE) may transmit ranging signals, for example positioning reference signals (PRS), via inter-vehicle messages. The broadcast parameters for the ranging signals, such as the timing of transmission, the bandwidth, or a combination thereof, may be adjusted based on one or more motion characteristics of the vehicle. If high speed or large acceleration, or rate of turning, is detected, the rate of transmission and/or the resource blocks included in the ranging signals may be increased. By increasing the rate of transmission and/or recourse blocks in the ranging signals, other vehicles receiving the ranging signals may update the range more often and with greater accuracy for increased safety while the transmitting vehicle is traveling at high speeds or acceleration.
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5.发明申请公开(公告)号：US20210327280A1
公开(公告)日：2021-10-21
申请号：US17232907
申请日：2021-04-16
Applicant: QUALCOMM Incorporated
Inventor： Chang-Sik CHOI , Kapil GULATI , Sudhir Kumar BAGHEL
Abstract: A user equipment in a vehicle (v-UE) may transmit ranging signals, sometimes referred to as physical ranging signals (PRS), via inter-vehicle messages. The vehicle may be designated as a representative of a cluster of vehicles, e.g., in a vehicle platoon, and may broadcast and receive PRS on behalf of the cluster, while no other vehicles in the cluster broadcast PRS. PRS received from single representative vehicle in a separate cluster may be used to determine the inter-cluster distance between the two clusters. If the inter-cluster distance falls below a predetermined threshold, the v-UE may instruct all other vehicles in its cluster to begin broadcasting PRS, so that each vehicle can determine its distance to all other vehicles. Accordingly, the overhead due to broadcast PRS may be minimized until, e.g., accurate positioning between vehicles is warranted.
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Patent Agency Ranking
公开(公告)号：US20230007619A1
公开(公告)日：2023-01-05
申请号：US17364619
申请日：2021-06-30
Applicant: QUALCOMM Incorporated
Inventor： Chang-Sik CHOI , Kapil GULATI , Gene Wesley MARSH , Junyi LI
Abstract: Disclosed are some examples of techniques for positioning of a user equipment (UE) using positioning reference signal (PRS). One or more units of messages may be communicated between an initiator UE and a responder UE. A unit of message may include a pre-PRS message, a PRS message and a post-PRS message. The pre-PRS message and the post-PRS message may be sent or received using a license spectrum. The PRS message may be sent or received using an unlicensed spectrum. The communication between the initiator UE and the responder UE may be initiated by the initiator UE identifying the responder UE from a plurality of UEs based on positioning properties of the responder UE. The positioning properties of the responder UE may include one or more of a direction, a velocity, a location confidence and a location of the responder UE.
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公开(公告)号：US20220279582A1
公开(公告)日：2022-09-01
申请号：US17670159
申请日：2022-02-11
Applicant: QUALCOMM Incorporated
Inventor： Chang-Sik CHOI , Kapil GULATI , Junyi LI
Abstract: The bandwidth of ranging signals used in ranging session in a distributed system are dynamically adjusted based on the accuracy of the ranging over multiple ranging sessions and optionally based on the probability of successful Listen Before Transmit (LBT) procedure over the multiple ranging sessions. The accuracy of the ranging may be determined, e.g., based on the variance of determined ranges over a number of ranging sessions, which may be compared to a threshold to indicate low accuracy ranging. The bandwidth of the ranging signals may be increased based on an indication of low accuracy ranging. If the ranging signals are broadcast on unlicensed spectrum using LBT procedures, the probability of successful LBT procedures by the initiator UE, the responder UEs, or all participating UEs may be used to determine whether bandwidth of the ranging signals should be decreased.
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公开(公告)号：US20220150863A1
公开(公告)日：2022-05-12
申请号：US17092003
申请日：2020-11-06
Applicant: QUALCOMM Incorporated
Inventor： Chang-Sik CHOI , Kapil GULATI , Sudhir Kumar BAGHEL , Anantharaman BALASUBRAMANIAN
Abstract: In one example, a method being performed by a first station and comprises: transmitting a first message including an indication of whether a clock reconfiguration event occurs at the first station; transmitting a first positioning reference signal (PRS); receiving from a second station a second PRS; and transmitting to the second station a second message including a first time when the first PRS is transmitted by the first station and a second time when the second PRS is received by the first station, to enable the second station to determine a roundtrip time (RTT) between the first station and the second station based on the first time, the second time, a third time when the second station receives the first PRS, a fourth time when the second station transmits the second PRS, and the indication.
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公开(公告)号：US20210306979A1
公开(公告)日：2021-09-30
申请号：US17205907
申请日：2021-03-18
Applicant: QUALCOMM Incorporated
Inventor： Chang-Sik CHOI , Kapil GULATI , Sudhir Kumar BAGHEL
Abstract: Systems, methods, and devices for sidelink positioning determination and communication can employ techniques including obtaining, at a first sidelink-enabled device, data from one or more data sources indicative of one or more criteria for using either round-trip time (RTT)-based positioning of a target node or single-sided (SS)-based positioning of the target node. The techniques also include selecting, with the first sidelink-enabled device, a positioning type from the group may comprise of RTT-based positioning and SS-based positioning, based on the data. The techniques also include sending a message from the first sidelink-enabled device to a second sidelink-enabled device, where the message includes information indicative of the selected positioning type.
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公开(公告)号：US20210160656A1
公开(公告)日：2021-05-27
申请号：US16698295
申请日：2019-11-27
Applicant: QUALCOMM Incorporated
Inventor： Chang-Sik CHOI , Kapil Gulati , Sudhir Kumar Baghel , Junyi Li
Abstract: A target user equipment (UE), which may be a vehicle or UE carried by a pedestrian, may receive sequentially broadcast ranging signals from a set of ranging source entities (SEs), which may be road side units or other vehicles. The target UE further receives location information separately broadcast by each SEs. The location information, for example, may include the position for the SE, the time of transmission of the ranging signals transmitted by the SE and/or a sequence identifier for the SE. The target UE may determine ranges to the SEs using time of arrival measurements for the ranging signals and the time of transmissions of the ranging signals or the sequence identifier received in the location information. The position of the target UE may be determined using the determined ranges to the SEs and the positions of the SEs received in the location information.
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