Systems and methods for establishing peer-to-peer communications between network devices communicating via a common bus

• US 7,082,485 B2
• Filed: 07/24/2002
• Issued: 07/25/2006
• Est. Priority Date: 07/24/2002
• Status: Active Grant

• Current Assignee: The Boeing Co.
• Original Assignee: The Boeing Co.
• Inventors: Grant, Robert Leeman, Konz, Daniel William, Ellerbrock, Philip John, Winkelmann, Joseph P. Jr.
• Primary Examiner(s): Dang, Khanh
• Application Number:
  US10/202,736
• Publication Number:
  US 20040019725A1
• Time in Patent Office: 1,462 Days
• Field of Search: 710/21, 710/38, 710/42, 710/100, 710/107, 710/305, 710/313, 710/314, 710/316, 710/317, 340/3.1, 370/422, 370/423, 370/476
• US Class Current: 710/110
• CPC Class Codes: H04L 12/40013 Details regarding a bus controller
• CPC Class Codes: H04L 12/403 with centralised control, e.g. polling
• CPC Class Codes: H04L 12/417 with deterministic access, e.g. token passing
• CPC Class Codes: H04L 2012/40267 Bus for use in transportation systems
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/612 for unicast
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]

Abstract

A system for establishing peer-to-peer communications via a network bus comprises a bus controller and at least one peer-to-peer grouping including a source device and at least one receiving device, all of which are in electrical communication with the network bus. The bus controller controls communications on the network bus and can transmit onto the network bus an express command, which is associated with the source device of one of the groupings and identifies data on the respective source device. The source device of a respective grouping is capable of receiving a transmitted express command, and the receiving devices of the respective grouping are capable of detecting the transmitted express command. Upon receipt, the source device is capable reading the data identified by the respective express command onto the network bus, and thereafter the receiving devices of the respective grouping are capable of automatically writing data from the network bus.

Claims

1. A system for establishing peer-to-peer communications via a network bus, said system comprising:

a bus controller in electrical communication with the network bus for controlling communications on the network bus; and

at least one peer-to-peer grouping, wherein each grouping comprises;

a source device in electrical communication with the network bus; and

at least one receiving device in electrical communication with the network bus,

wherein said bus controller is capable of transmitting a read command that identifies data on the source device of one grouping, wherein the source device of the respective grouping is capable of receiving the read command, wherein the at least one receiving device of the respective grouping is also capable of detecting the read command, wherein the source device of the respective grouping is capable of reading the data identified by the read command onto the network bus in response to the read command, and thereafter the at least one receiving device of the respective grouping is capable of automatically writing data from the network bus in response to the read command.

2. A system according to claim 1, wherein said bus controller is further capable of transmitting a trigger command to the source device and at least one receiving device of the at least one grouping before transmitting the read command, wherein the source device of the at least one grouping is capable of receiving the trigger command and thereafter inputting data, and wherein the at least one receiving device of the at least one grouping is capable of receiving the trigger command and thereafter outputting data.

3. A system according to claim 1, wherein the at least one receiving device of each grouping is pre-configured to monitor the network bus for a read command transmitted from said bus controller to the source device of the respective grouping.

4. A system according to claim 1, wherein said bus controller is capable of transmitting a trigger command that includes a group identifier identifying the respective grouping, wherein the source device and at least one receiving device of the identified grouping is capable of receiving the trigger command, wherein the source device of the respective grouping is capable inputting data and reading data onto the network bus in response to receiving the trigger command, and wherein the at least one receiving device of the respective grouping is capable of outputting data and writing data from the network bus in response to receiving the trigger command.

5. A system according to claim 4, wherein the source device and the at least one receiving device of each grouping are pre-configured to receive a trigger command that includes a group identifier that identifies the respective grouping, wherein the source device of each grouping is further configured to read a predetermined amount of data onto the network bus in response to receiving the trigger command, and wherein the at least one receiving device of each grouping is configured to write a predefined amount of data from the network bus in response to receiving the trigger command.

6. A method of establishing peer-to-peer communications in a network comprising a plurality of network devices communicating via a common network bus, wherein the plurality of network devices includes at least one peer-to-peer grouping, and wherein each grouping comprises a source device and at least one receiving device, said method comprising:

transmitting a read command onto the network bus, wherein the read command identifies data on the source device of one grouping;

receiving the transmitted read command at the source device of the respective grouping, and detecting the transmitted read command at the at least one receiving device of the respective grouping; and

in response to the read command.

reading the identified data from the source device of the respective grouping onto the network bus and thereafter automatically writing data from the network bus onto the at least one receiving device of the respective grouping.

7. A method according to claim 6 further comprising:

transmitting a trigger command to the source device and at least one receiving device of the at least one grouping; and

inputting data to the source device of the at least one grouping and outputting data from the at least one receiving device of the at least one grouping, wherein transmitting the trigger and inputting data occurs before transmitting the read command.

8. A method according to claim 6 further comprising pre-configuring the at least one receiving device of each grouping to detect a read command transmitted to the source device of the respective grouping before transmitting the read command.