公开(公告)号：US10652896B2

公开(公告)日：2020-05-12

申请号：US16119152

申请日：2018-08-31

Applicant: NXP B.V.

Inventor： Chetan Belagal Math ,  Hong Li ,  Sonia Marcela Heemstra de Groot

IPC: H04W72/04 ,  H04W4/46 ,  H04W28/02 ,  H04L12/825 ,  H04L12/811

Abstract: An intelligent transportation system (ITS) station (400) for a vehicle (200) is described. The ITS station (400) includes a packet count and vehicle count estimator (342) arranged to receive broadcast ITS transmissions from a plurality of neighbouring vehicles and provide an indication of a number of the plurality of vehicles and a number of packets received from the plurality of neighbouring vehicles; and a fair resource allocator circuit (410) operably coupled to the packet count and vehicle count estimator (342) and configured to adjust a broadcast message rate and a modulation data rate of an ITS transmission in a cooperative manner based on application reliability requirements, the number of the plurality of vehicles and the indication of the number of received packets; and a transmitter operably coupled to the fair resource allocator circuit (410) and configured to broadcast at least one ITS message using the adjusted broadcast message rate and adjusted modulation data rate. In this manner, an ITS station is provided that may improve and support application reliability requirements, such as safety applications.

公开(公告)号：US10939359B2

公开(公告)日：2021-03-02

申请号：US16449699

申请日：2019-06-24

Applicant: NXP B.V.

Inventor： Luis Fernando Abanto Leon ,  Arie Geert Cornelis Koppelaar ,  Sonia Marcela Heemstra de Groot

IPC: H04W48/18 ,  H04W48/06 ,  H04W74/08 ,  H04W72/04

Abstract: Aspects of the disclosure are directed to a communications environment involving a plurality of remote transmitters that communicate over respective subchannels. As may be implemented in accordance with one or more embodiments, energy characteristics of wireless transmissions received from one of the remote transmitters and a location that remote transmitter are respectively ascertained, for each of such subchannels. One of the subchannels is selected based on the ascertained energy characteristics and locations of the remote transmitters, and data is generated for transmission over the selected one of the subchannels.

公开(公告)号：US20190159211A1

公开(公告)日：2019-05-23

申请号：US16119152

申请日：2018-08-31

Applicant: NXP B.V.

Inventor： Chetan Belagal Math ,  Hong Li ,  Sonia Marcela Heemstra de Groot

IPC: H04W72/04 ,  H04W4/46

Abstract: An intelligent transportation system (ITS) station (400) for a vehicle (200) is described. The ITS station (400) includes a packet count and vehicle count estimator (342) arranged to receive broadcast ITS transmissions from a plurality of neighbouring vehicles and provide an indication of a number of the plurality of vehicles and a number of packets received from the plurality of neighbouring vehicles; and a fair resource allocator circuit (410) operably coupled to the packet count and vehicle count estimator (342) and configured to adjust a broadcast message rate and a modulation data rate of an ITS transmission in a cooperative manner based on application reliability requirements, the number of the plurality of vehicles and the indication of the number of received packets; and a transmitter operably coupled to the fair resource allocator circuit (410) and configured to broadcast at least one ITS message using the adjusted broadcast message rate and adjusted modulation data rate. In this manner, an ITS station is provided that may improve and support application reliability requirements, such as safety applications.