US 7,613,190 B2Granted

System and method for streaming sequential data through an automotive switch fabric

AssigneeTemic Automotive of North America, Inc.

InventorsPatrick D. Jordan, Hai Dong, Hugh W. Johnson, Prakash U. Kartha, Samuel M. Levenson

Life of this patent

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Abstract

A system and method for streaming sequential data through a vehicle switch fabric network. This is particular useful in areas such as reprogramming nodes in the automotive switch fabric network where relatively large records or messages need to be transmitted through the switch fabric, although the invention may be used in other areas. In sum, the system and method described herein takes large data records and breaks them down into smaller units (data packets) that fit within the constraints of the physical layer on which communication links in the switch fabric network is built. The smaller data packets are assigned with a message identification and a sequence number. Data packets associated with the same data record or message are assigned with the same message identification but may differ in their sequence number. Each data packet is transmitted over the vehicle switch fabric network to a destination node. At the destination node, the data packets may be reassembled to its original data format based on the message identification and sequence numbers. The reassembled message may then be presented to an application in the node for processing.

Claims10

Dependent claims

A method for sending a record from an external diagnostic device through a switch fabric of a vehicle communication network, the switch fabric including a plurality of nodes joined by communication links for transmission of data packets therebetween, wherein the external diagnostic device is connected to the switch fabric of the vehicle communication network, and wherein the record comprises message data, the method comprising the steps of:

generating from the record, at the external diagnostic device, a first data packet comprising a first message identification, a first sequence number, and a plurality of first data elements, the plurality of first data elements containing at least a first portion of the message data in the record, wherein the message data in the record is larger than a packet size limitation of the switch fabric of the vehicle communication network, and wherein the first data packet containing the first portion of the message data in the record is within the packet size limitation of the switch fabric of the vehicle communication network;
generating from the record, at the external diagnostic device, a second data packet comprising a second message identification, a second sequence number, and a plurality of second data elements, the plurality of second data elements containing at least a second portion of the message data in the record, wherein the second data packet containing the second portion of message data in the record is within the packet size limitation of the switch fabric of the vehicle communication network;
transmitting the first data packet and the second data packet from the external diagnostic device to a target node in the switch fabric of the vehicle communication network;
and
receiving the first data packet and the second data packet at the target node and assembling at least the first portion of the message data and the second portion of the message data based on the first and second message identifications and the first and second sequence numbers.

2 more elements

generating from the record, at the external diagnostic device, a first data packet comprising a message identification associated with the record, a command, and a message length;
generating from the record, at the external diagnostic device, a second data packet comprising the message identification associated with the record, a first sequence number, and a plurality of first data elements, the plurality of first data elements containing at least a first portion of the message data in the record, wherein the message data in the record is larger than a packet size limitation of the switch fabric of the vehicle communication network, and wherein the second data packet containing the first portion of message data in the record is within the packet size limitation of the switch fabric of the vehicle communication network;
generating from the record, at the external diagnostic device, a third data packet comprising the message identification associated with the record, a second sequence number, and a plurality of second data elements, the plurality of second data elements containing at least a second portion of the message data in the record, wherein the third data packet containing the second portion of message data in the record is within the packet size limitation of the switch fabric of the vehicle communication network;
transmitting the first, second, and third data packets from the external diagnostic device to a target node in the switch fabric of the vehicle communication network;
and
receiving the first, second, and third data packets at the target node and assembling at least the first portion of the message data and the second portion of the message data based on the message identification associated with the record and the first and second sequence numbers.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/015,153Filed 17 Dec 2004 · us provisional application
Priority: 18 Oct 2004
Published: US 2006/0083229 A120 Apr 2006
Granted: 3 Nov 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification2 codes

H04L 12/2854
Characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]: wide area networks, e.g. public data networks
H04L
Digital communication

Family

Application60/619,669Us provisional application · filed 18 Oct 2004
US 2006/0083229 A1Pre-grant publication · published 20 Apr 2006
US 7,613,190 B2This patent

From the US filing history. Foreign family members aren’t listed.

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