公开(公告)号：US20210159938A1

公开(公告)日：2021-05-27

申请号：US17085311

申请日：2020-10-30

Applicant: NXP B.V.

Inventor： Diwakar Subraveti ,  Atmaram Kota Rajaram ,  Nidhin Vadakkan ,  Hendrik Ahlendorf ,  Brima Babatunde Ibrahim

IPC: H04B1/7073

Abstract: A method is described synchronization in a communication system which comprises a master anchor device, a first anchor device, and a second anchor device. The method comprises: i) transmitting, by the master anchor device, a first message to the first anchor device and to the second anchor device using a first ultra-wide band (UWB) communication, wherein the first message is indicative of a master clock of the master anchor device receiving, by the first anchor device, the first message, and synchronizing a first clock of the first anchor device based on the master clock, and iii) receiving, by the second anchor device, the first message, and synchronizing a second clock of the second anchor device based on the master clock. Furthermore, a communication system and a use of UWB communication is described.

公开(公告)号：US11695447B2

公开(公告)日：2023-07-04

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 ,  H04W84/12

CPC classification number: H04B1/7163 ,  H04B7/0602 ,  H04W84/12

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.

公开(公告)号：US11722171B2

公开(公告)日：2023-08-08

申请号：US17455437

申请日：2021-11-18

Applicant: NXP B.V.

Inventor： Diwakar Subraveti ,  Abdul Wahid Abdul Kareem ,  Shengyang Xu ,  Atmaram Kota Rajaram ,  Ajay A Jampale

IPC: H04B1/7176 ,  H04B1/7183

CPC classification number: H04B1/7176 ,  H04B1/7183

Abstract: UWB ranging methods and apparatus are disclosed. The method comprises a ranging communication with a plurality of responder devices, the ranging communication comprising: transmitting, by an initiator device, a polling signal in a time slot; receiving a respective response from each of the plurality of responder devices, overlapping and in a next time slot, each response comprising: synchronization bits, and a frame comprising Start of Frame Delimiter, and a Scrambled Timestamp Sequence; wherein the STS comprises a sequence of segments each preceded by a respective guard interval, wherein a specific one of the segments comprises data derived from a ranging key and a responder-identifier each unique to the respective responder among the plurality of responders, wherein a sequence-number of the specific segment is unique to the respective response, and wherein a remainder of the segments each comprise the same data derived from a predetermined common key and predetermined common data.

公开(公告)号：US11411599B2

公开(公告)日：2022-08-09

申请号：US17085311

申请日：2020-10-30

Applicant: NXP B.V.

Inventor： Diwakar Subraveti ,  Atmaram Kota Rajaram ,  Nidhin Vadakkan ,  Hendrik Ahlendorf ,  Brima Babatunde Ibrahim

IPC: H04B1/7073

Abstract: A method is described synchronization in a communication system which comprises a master anchor device, a first anchor device, and a second anchor device. The method comprises: i) transmitting, by the master anchor device, a first message to the first anchor device and to the second anchor device using a first ultra-wide band (UWB) communication, wherein the first message is indicative of a master clock of the master anchor device receiving, by the first anchor device, the first message, and synchronizing a first clock of the first anchor device based on the master clock, and iii) receiving, by the second anchor device, the first message, and synchronizing a second clock of the second anchor device based on the master clock. Furthermore, a communication system and a use of UWB communication is described.

公开(公告)号：US20220200656A1

公开(公告)日：2022-06-23

申请号：US17455437

申请日：2021-11-18

Applicant: NXP B.V.

Inventor： Diwakar Subraveti ,  Abdul Wahid Abdul Kareem ,  Shengyang Xu ,  Atmaram Kota Rajaram ,  Ajay A. Jampale

IPC: H04B1/7176 ,  H04B1/7183

Abstract: UWB ranging methods and apparatus are disclosed. The method comprises a ranging communication with a plurality of responder devices, the ranging communication comprising: transmitting, by an initiator device, a polling signal in a time slot; receiving a respective response from each of the plurality of responder devices, overlapping and in a next time slot, each response comprising: synchronization bits, and a frame comprising Start of Frame Delimiter, and a Scrambled Timestamp Sequence; wherein the STS comprises a sequence of segments each preceded by a respective guard interval, wherein a specific one of the segments comprises data derived from a ranging key and a responder-identifier each unique to the respective responder among the plurality of responders, wherein a sequence-number of the specific segment is unique to the respective response, and wherein a remainder of the segments each comprise the same data derived from a predetermined common key and predetermined common data.

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.