公开(公告)号：US20210091889A1

公开(公告)日：2021-03-25

申请号：US17006998

申请日：2020-08-31

Applicant: NXP B.V.

Inventor： Vincent Pierre Martinez ,  Artur Tadeusz Burchard ,  Alessio Filippi

IPC: H04L1/08 ,  H04L1/00 ,  H04L5/00 ,  H04L29/06 ,  H04W4/40

Abstract: Aspects of the present disclosure are directed to use with communications that may involve repetitive communications. As may be implemented in accordance with one or more embodiments, a subset of symbols in a current data message (130/131) are used with a corresponding subset of symbols in a previous data message (120/121), to ascertain whether the current data message is a repetition of the previous data message. This may involve, for instance, generating a resemblance metric to represent semblance between a subset the data symbols of the current data message and a subset the data symbols of the previous data message (102). The resemblance metric can be used in determining whether the current data message is a repetition of the previous data message. This approach may be useful, for example, in ascertaining whether the current message is a repetition without necessarily decoding the message.

公开(公告)号：US10959073B2

公开(公告)日：2021-03-23

申请号：US16451689

申请日：2019-06-25

Applicant: NXP B.V.

Inventor： Vincent Pierre Martinez

IPC: H04W4/46 ,  H04W4/12 ,  H04W84/04 ,  H04W84/12 ,  H04W84/18

Abstract: Embodiments are directed to methods and apparatuses for wireless vehicular communications using different communications protocols. A method includes communicating wirelessly via first vehicular communications circuitry by using a first vehicular communications protocol in which respective messages are sent synchronously. The method further includes, as part of each transmitted message, including data which is consistent with another vehicular communications protocol in which messages are sent asynchronously on behalf of other vehicular communications circuits and which indicates to the other vehicular communications circuits a reservation time for ensuing message subframes. In some embodiments, in addition to or alternatively to the above, the messages are transmitted based upon a fairness criterion associated with a relative extent of frequency-spectrum use involving transmissions according to the first vehicular communications protocol relative transmissions according to the other vehicular communications protocol.

公开(公告)号：US20200015111A1

公开(公告)日：2020-01-09

申请号：US16451745

申请日：2019-06-25

Applicant: NXP B.V.

Inventor： Vincent Pierre Martinez ,  Alessio Filippi

IPC: H04W28/02 ,  H04L1/00 ,  H04L29/08 ,  H04L1/08 ,  H04L25/03 ,  H04W4/46

Abstract: Embodiments are directed to methods and apparatuses for wireless vehicular communications involving retransmission of messages. A method for communicating by vehicular communications circuitry of a device includes, in a wireless communications network in which a message is broadcasted by vehicular communications circuitry of a device for asynchronous receptions by other circuitry in one or more devices configured to wirelessly communicate according to a communications protocol, monitoring a channel busy ratio associated with channels in a designated range of frequency pertaining to the wireless communications network. The method further includes assessing whether to retransmit the message as a function of the channel busy ratio, and in response to the channel busy ratio being outside a threshold, retransmitting the message according to the communications protocol.

公开(公告)号：US20200008026A1

公开(公告)日：2020-01-02

申请号：US16451689

申请日：2019-06-25

Applicant: NXP B.V.

Inventor： Vincent Pierre Martinez

IPC: H04W4/46 ,  H04W4/12

Abstract: Embodiments are directed to methods and apparatuses for wireless vehicular communications using different communications protocols. A method includes communicating wirelessly via first vehicular communications circuitry by using a first vehicular communications protocol in which respective messages are sent synchronously. The method further includes, as part of each transmitted message, including data which is consistent with another vehicular communications protocol in which messages are sent asynchronously on behalf of other vehicular communications circuits and which indicates to the other vehicular communications circuits a reservation time for ensuing message subframes. In some embodiments, in addition to or alternatively to the above, the messages are transmitted based upon a fairness criterion associated with a relative extent of frequency-spectrum use involving transmissions according to the first vehicular communications protocol relative transmissions according to the other vehicular communications protocol.