×

Vehicle communications via wireless access vehicular environment

  • US 9,924,452 B2
  • Filed: 10/13/2016
  • Issued: 03/20/2018
  • Est. Priority Date: 01/09/2013
  • Status: Active Grant
First Claim
Patent Images

1. An On-board unit (OBU) comprising:

  • at least one processor running at least one computer program adapted to enable theOBU to;

    (i) comply with IEEE 802.1 1p Wireless Access Vehicular Environment (WAVE) functionality, including the IEEE 1609 suite of specifications;

    (ii) process a IEEE 1609.1 WAVE Services Announcements (WSA) from an RSU to acquire a User Datagram Protocol (UDP) port and Internet Protocol version 6 (IPv6) address of a UDP/IPv6-based geo-location service from which the geo-location of said RSU may be acquired;

    (iii) acquire from said WSA at least one Received Signal Strength Indicator (RSSI) value associated with Radio Frequency (RF) reception by said RSU of IEEE 802.1 1p frames transmitted from at least one neighboring RSU;

    (iv) acquire from said WSA the Medium Access Control (MAC) address of said at least one neighboring RSU;

    (v) use said at least one RSSI value and said MAC address of said at least one neighboring RSU, acquired from said WSA, to calibrate the distance, estimated according to the RSSI associated with said WSA received by said OBU, thereby improving the accuracy of the inputs to a multi-lateration algorithm used to geo-locate said OBU.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×