Nxp B.v.

Nxp Usa, Inc.

Freescale Semiconductor,inc.

Vincent Pierre Martinez

Alessio Filippi

Artur Tadeusz Burchard

Cornelis Marinus Moerman

Michael Andrew Fischer

Arvind Kaushik

Samuel Kerhuel

Girraj K Agrawal

Rui Cao

Didier Salle

Amrit Pal Singh

Klaas Brink

Marnix Claudius Vlot

Somvir Dahiya

Wim Joseph Rouwet

Rajan Kapoor

Volker Dietmar Wahl

Igor Levakov

Haim Ben-Lulu

Nicolas Harmen Lehment

Frederic Fernez

Willem Pieter Sanberg

Sylvain Roudiere

Philippe Jean-Pierre Perruchoud

Giraud Alexandre

A method, system, apparatus, and architecture are provided for validating one or more sensors by collecting and processing sensor data signals from on-board vehicle sensors to generate a local environmental map identifying one or more first traffic features located in an exterior environment of the vehicle, by collecting and processing sensor data signals from a remote traffic participant to generate an external environmental map identifying one or more second traffic features located in an exterior environment of the remote traffic participant, and by performing a diagnostic sensor cross check on on-board sensors by comparing the local environmental map with at least the external environmental map to detect any discrepancy between the one or more first traffic features and the one or more second traffic features which indicates that one or more of the on-board sensors is defective.

V2X for sensor cross checks and diagnosis

A mechanism is provided to reduce interference between vehicular radar systems through communicating radar parameters and physical orientation between vehicles and then using directional information to form clusters of radars, which will have consistent modulation parameters. Radar modulation parameters, such as starting frequency, center frequency, bandwidth, slope, ramp direction, timing, and the like for frequency-modulated continuous-wave (FMCW) radars, are adjusted to reduce or eliminate inter-cluster direct interference between clusters oriented in different directions. For other types of radars, in some embodiments, other operational parameters can be adjusted. In some embodiments, some modulation parameters also can be adjusted to reduce or eliminate intra-cluster indirect interference.

System and method for radar interference mitigation using clustering

Aspects of the present disclosure are directed to communicating signals to receivers utilizing different protocols. As may be implemented in accordance with one or more embodiments, a set of signals are generated to include data configured in accordance with a first protocol and data configured in accordance with a second protocol. The set of signals are communicated over the wireless channel, by using the data corresponding to the first protocol for communicating with receivers operating in accordance with the first protocol and using the data corresponding to the second protocol to communicate with receivers operating in accordance with the second protocol.

Apparatuses and methods involving communications utilizing different protocols in a common channel

Aspects of the present disclosure are directed to wireless communications involving successively-received messages. As may be implemented consistent with one or more aspects characterized herein, a preamble section () of a currently-received message () is used in decoding a previously-received message (), for wireless transmissions from a wireless transmitter () on a wireless communications channel (). The current and previous message are received in succession with a time gap () therebetween.

Communications with utilization of current preamble for decoding previous message

A battery pack comprises an enclosure; a plurality of network nodes that communicate with each other inside the enclosure and that generate a unique radio frequency (RF) signature; and a special-purpose computer processor that compares an incoming channel impulse response (CIR) of the unique radio frequency (RF) signature corresponding to an incoming packet to a plurality of stored valid RF CIR signatures and executes a resemblance metric to accept or reject the incoming packet.

Network node identification using wireless signal signatures

In connection with an RF communication system, exemplary aspects involve a method for use in a communication system in which a first system (e.g., 802.11) that is asynchronously based and which is susceptible to interference from a second system (e.g., synchronous-based LTE-CV2X). Such interference is due to the frequency spectrum used by the first and second systems overlapping. To mitigate interference issues, example methods spreads out the times for messages in the first system, based on information concerning occupancy of the channel, and transmitting them relative to the end of a cycled transmission allocated for use by the second system.

Mitigating interference in channel access involving multiple systems

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 () are used with a corresponding subset of symbols in a previous data message (), 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 (). 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.

Wireless communication with repetition detection

Aspects of the present disclosure are directed to ascertaining whether data messages are repetitions of a previous data message. As may be implemented in accordance with one or more embodiments characterized herein, data packets () are received () and which use a first time delay relative to transmission of a previous data packet () by a different transmitter. Repetitions (A/A) of data packets are also received (), and which use a second time delay relative to transmission of a previous data packet () by the same transmitter. The second time delay is less than the first time delay. The received packet is identified () as being a repetition of an immediately-previous data packet based on a time delay between the data packet and the immediately-previous data packet, relative to the first and second time delays.

Wireless communication with time-delay repetition detection

Embodiments of a device and method are disclosed. In an embodiment, a method of wireless communications involves at a receiver, receiving a first packet, subsequently, at the receiver, receiving a second packet, and determining whether the second packet is a repetition of the first packet based on packet acquisition information associated with the first and second packets.

Wireless communications device and method of wireless communications

Embodiments of a device and method are disclosed. In an embodiment, a method of wireless communications involves at a receiver, receiving a first packet, subsequently, at the receiver, receiving a second packet, and determining whether the second packet is a repetition of the first packet based on wireless communications channel estimation information associated with the first and second packets.

Aspects of the present disclosure are directed to methods and/or apparatuses involving stations () participating in wireless station-to-station communications in which each of a plurality of stations shares a wireless communications channel (). Information is collected wirelessly () from transmissions associated with a first communication protocol and from transmissions associated with a second communication protocol. A current communication environment is dynamically discerned therefrom (), and used to characterize a dynamic relationship of the collected information, which is indicative of respective usage of the wireless communication channel by data transmitted via the respective protocols. Usage of the channel is allocated () for respective communications that use the first and second communication protocols based on the dynamic relationship. Sets of data () are wirelessly transmitted via the first and second communication protocols over the channel, based on the allocated usage.

Wireless vehicular communications with channel allocation involving different protocols

Aspects of the disclosure are directed to methods and apparatuses for wireless vehicular communications involving the transmission of messages using two or more protocols. As may be implemented in accordance with one or more embodiments characterized herein, wireless station-to-station communications are carried out in which a plurality of stations share a wireless communications channel. Information is wirelessly collected respectively from transmissions associated with a legacy communication protocol and another type of communication protocol. A current communication environment of the station is dynamically discerned and characterizes a dynamic relationship of the collected information using the legacy communication protocol relative to the collected information using the other communication protocol. Communications are wirelessly transmitted over the wireless communications channel using the legacy and other communication protocols, by allocating usage of the channel through transmissions of data, via the legacy communication protocol and via the other communication protocol, based on the dynamic relationship.

Wireless vehicular communications with dynamic-based relationships

A method including receiving a data subframe having a plurality of symbols, determining a location of invalid pseudo time-domain samples in the data subframe, and discarding invalid pseudo time domain samples and recovering valid pseudo time domain samples to produce an updated data subframe, and processing the updated data subframe to produce demodulated data.

Automatic gain control symbol partial use for decoding

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.

Wireless vehicular communications according to vehicular communications protocols using reservation times

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.

Growing community of inventors

Roques, France

Vincent Pierre Martinez