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公开(公告)号：US20250142332A1
公开(公告)日：2025-05-01
申请号：US18408998
申请日：2024-01-10
Applicant: NXP B.V.
Inventor： Srivathsa Masthi Parthasarathi , Pablo Corbalán Pelegrín , Yuvaraj Pargunam , Michael Stark
Abstract: An ultra-wideband (UWB) system of a UWB-enabled device dynamically schedules UWB ranging sessions with multiple asynchronous access control devices. The UWB system creates one ranging session for each access control device and schedules each ranging session with equal priority. During each ranging session, the UWB system receives a ranging message from a corresponding access control device, with the ranging message including a ranging management list (RML) that includes identifiers associated with UWB systems that are within an access control range of the corresponding access control device. The UWB system updates the priority of each ranging session based on presence or absence of the corresponding identifier in the RML of the received ranging message. Further, the UWB system schedules the ranging sessions with the updated priority to dynamically prioritize one access control device, thereby enabling an operation between the UWB system and the corresponding access control device.
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公开(公告)号：US11694497B2
公开(公告)日：2023-07-04
申请号：US17538371
申请日：2021-11-30
Applicant: NXP B.V.
Abstract: The method includes one or more turnstiles using a non-secure ranging process to detect a proximity of one or more mobile computing devices carried by respective users. The method also includes one of the turnstiles, on making a proximity determination in respect of a first of said mobile computing devices, commencing a secure authentication process to authenticate a user carrying the first mobile computing device. The method further includes, in response to a determination that the user carrying the first mobile computing device has been authenticated, allowing the user carrying the first mobile computing device to pass through the turnstile.
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公开(公告)号：US20210360395A1
公开(公告)日：2021-11-18
申请号：US17302005
申请日：2021-04-21
Applicant: NXP B.V.
Abstract: In accordance with a first aspect of the present disclosure, an ultra-wideband communication node is provided, comprising: an ultra-wideband communication unit configured to transmit one or more messages to a plurality of external responder nodes and to receive one or more responses from said responder nodes; a processing unit configured to use a common cryptographic session key to encrypt said messages, wherein said common cryptographic session key is a key shared between the ultra-wideband communication node and all the external responder nodes; wherein the processing unit is further configured to use responder-specific cryptographic session keys to decrypt the responses and/or to encrypt further messages to the responder nodes, and wherein each individual one of said responder-specific cryptographic session keys is a key shared between the ultra-wideband communication node and one of the external responder nodes.
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公开(公告)号：US12282106B2
公开(公告)日：2025-04-22
申请号：US18181645
申请日：2023-03-10
Applicant: NXP B.V.
Inventor： Sunil Dilipkumar Jogi , Purnank Harjivanbhai Ghumalia , Michael Schober , Stefan Lemsitzer , Srivathsa Masthi Parthasarathi , Guillaume Lepoittevin
Abstract: Disclosed are methods and devices for, UWB, ranging of a target using a plurality of antenna arrays. The method comprises: determining a first RSSI, from a first antenna of a first antenna arrays, and a second RSSI from a second antenna of a second antenna arrays; in response to the first RSSI being larger than the second RSSI, selecting the first antenna array, and selecting the second antenna array otherwise; using the selected antenna array, performing a UWB ranging measurement including measuring an angle of arrival of the signal from the target; including, if the angle of arrival of the signal from the target is out of range: selecting a different one of the plurality of antennae arrays, as a presently-selected antenna array; and, using that antenna array, performing a UWB ranging measurement including measuring an angle of arrival of the signal from the target.
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公开(公告)号：US20230305137A1
公开(公告)日：2023-09-28
申请号：US18181645
申请日：2023-03-10
Applicant: NXP B.V.
Inventor： Sunil Dilipkumar Jogi , Purnank Harjivanbhai Ghumalia , Michael Schober , Stefan Lemsitzer , Srivathsa Masthi Parthasarathi , Guillaume Lepoittevin
IPC: G01S13/76
CPC classification number: G01S13/767
Abstract: Disclosed are methods and devices for, UWB, ranging of a target using a plurality of antenna arrays. The method comprises: determining a first RSSI, from a first antenna of a first antenna arrays, and a second RSSI from a second antenna of a second antenna arrays; in response to the first RSSI being larger than the second RSSI, selecting the first antenna array, and selecting the second antenna array otherwise; using the selected antenna array, performing a UWB ranging measurement including measuring an angle of arrival of the signal from the target; including, if the angle of arrival of the signal from the target is out of range: selecting a different one of the plurality of antennae arrays, as a presently-selected antenna array; and, using that antenna array, performing a UWB ranging measurement including measuring an angle of arrival of the signal from the target.
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Patent Agency Ranking
公开(公告)号：US11736937B2
公开(公告)日：2023-08-22
申请号：US17302005
申请日：2021-04-21
Applicant: NXP B.V.
CPC classification number: H04W12/037 , H04L9/085 , H04L9/30 , H04L9/3273 , H04W4/06 , H04W4/80
Abstract: In accordance with a first aspect of the present disclosure, an ultra-wideband communication node is provided, comprising: an ultra-wideband communication unit configured to transmit one or more messages to a plurality of external responder nodes and to receive one or more responses from said responder nodes; a processing unit configured to use a common cryptographic session key to encrypt said messages, wherein said common cryptographic session key is a key shared between the ultra-wideband communication node and all the external responder nodes; wherein the processing unit is further configured to use responder-specific cryptographic session keys to decrypt the responses and/or to encrypt further messages to the responder nodes, and wherein each individual one of said responder-specific cryptographic session keys is a key shared between the ultra-wideband communication node and one of the external responder nodes.
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公开(公告)号：US20220400008A1
公开(公告)日：2022-12-15
申请号：US17663740
申请日：2022-05-17
Applicant: NXP B.V.
Abstract: A communication device is provided, comprising: an ultra-wideband device configured to establish a communication session with an external communication device; a secure element configured to generate a session key for use in said communication session and an authentication key derived from said session key; a processing unit configured to execute an application; wherein the secure element is further configured to transfer the session key and the authentication key to the UWB device; wherein the UWB device is configured to add, upon or after receiving data for use by said application, a cryptographic tag to said data; wherein the processing unit is configured to receive said data and the cryptographic tag, and to forward said data and cryptographic tag to the secure element; wherein the secure element is configured to verify said cryptographic tag and to return, upon or after a positive verification of the cryptographic tag, a signed confirmation.
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公开(公告)号：US11743091B2
公开(公告)日：2023-08-29
申请号：US17661072
申请日：2022-04-28
Applicant: NXP B.V.
Inventor： Pablo Corbalán Pelegrín , Michael Schober , Srivathsa Masthi Parthasarathi , Stefan Lemsitzer
CPC classification number: H04L27/2657 , H04J3/0638 , H04L7/0037 , H04W56/0035
Abstract: A method of estimating a clock frequency offset in a mobile device relative to a clock frequency of a controller within a UWB network comprises (a) determining, for each of a plurality of anchors, an anchor clock frequency offset relative to the controller clock frequency, (b) broadcasting an anchor data packet from each anchor, the anchor data packet including the respective anchor clock frequency offset, (c) receiving at least one anchor data packet at the mobile device, (d) estimating a mobile device clock frequency offset relative to the anchor clock frequency of the anchor from which the at least one anchor data packet was received, and (e) estimating the clock frequency offset in the mobile device based on the estimated mobile device clock frequency offset and the anchor clock frequency offset included in the at least one received anchor data packet. Furthermore, a TDoA-based localization method and a TDoA-based localization system are described.
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公开(公告)号：US20220256338A1
公开(公告)日：2022-08-11
申请号：US17649247
申请日：2022-01-28
Applicant: NXP B.V.
Inventor： Srivathsa Masthi Parthasarathi , Stefan Lemsitzer
IPC: H04W12/037 , H04L9/40 , H04W12/0431 , H04L9/08
Abstract: Disclosed is a UWB communication node comprising: a UWB communication unit configured to transmit one or more messages, to a plurality of external responder nodes and comprising a ranging control message defining a contention period, and further configured to receive one or more responses from said responder nodes during said contention period, each response including a response payload; a processor unit configured to use a common cryptographic session key to encrypt said messages; wherein the processing unit is further configured to use responder-specific session keys to decrypt the response payloads; wherein each individual one of said responder-specific cryptographic session keys is a unique key shared between the node and one of the external responder nodes. Corresponding systems methods and an associated computer program are also disclosed.
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公开(公告)号：US20210399761A1
公开(公告)日：2021-12-23
申请号：US17303625
申请日：2021-06-03
Applicant: NXP B.V.
Inventor： Srivathsa Masthi Parthasarathi , Brian Charles Cassidy , Atmaram Kota Rajaram , Ghiath Al-kadi , Hendrik Ahlendorf
IPC: H04B1/7163 , H04B7/06
Abstract: In accordance with a first aspect of the present disclosure, a communication device is provided, comprising: an ultra-wideband (UWB) communication unit configured to set up a UWB communication channel with a first external communication device; a further communication unit configured to set up a further communication channel with a second external communication device; an antenna configured to be selectively used by the UWB communication unit and the further communication unit; wherein the UWB communication unit is operatively coupled to the further communication unit, and wherein the further communication unit is configured to grant the UWB communication unit access to said antenna in response to receiving a request from the UWB communication unit. This aspect represents a solution to the problem of how to facilitate avoiding that UWB ranging rounds fail in a co-existence system.
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