System and method for internal networking, data optimization and dynamic frequency selection in a vehicular environment

• US 9,277,370 B2
• Filed: 04/01/2014
• Issued: 03/01/2016
• Est. Priority Date: 01/14/2011
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Addepalli, Sateesh K., Moghe, Ashok K., Bonomi, Flavio, Girardot, Marc Jean-Philippe, Subramanian, Vijaynarayanan, Dai, Lillian Lei, Pan, Rong, Natarajan, Preethi, Zhu, Xiaoqing, Thubert, Pascal, Wong, Chiu Ngok Eric
• Primary Examiner(s): Thompson, Jr., Otis L
• Application Number:
  US14/242,122
• Publication Number:
  US 20140215491A1
• Time in Patent Office: 700 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: B60R 16/023 for transmission of signals between vehicle parts or subsystems
• CPC Class Codes: B60W 50/10 Interpretation of driver requests or demands
• CPC Class Codes: G06F 21/45 Structures or tools for the administration of authentication
• CPC Class Codes: G06F 3/017 Gesture based interaction, e.g. based on a set of recognized hand gestures interaction based on gestures traced on a digitiser G06F3/04883
• CPC Class Codes: G06F 3/167 Audio in a user interface, e.g. using voice commands for navigating, audio feedback
• CPC Class Codes: G06F 9/542 Event management; Broadcasting; Multicasting; Notifications
• CPC Class Codes: H04L 1/008 where the control data relates to payload of a different packet
• CPC Class Codes: H04L 43/0811 by checking connectivity
• CPC Class Codes: H04L 43/0858 One way delays
• CPC Class Codes: H04L 43/0876 Network utilisation, e.g. volume of load or congestion level
• CPC Class Codes: H04L 45/12 Shortest path evaluation
• CPC Class Codes: H04L 51/02 using automatic reactions or user delegation, e.g. automatic replies or chatbot-generated messages
• CPC Class Codes: H04L 61/2592 using tunnelling or encapsulation
• CPC Class Codes: H04L 63/0227 Filtering policies mail message filtering H04L51/212
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04L 67/60 Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources admission control or resource allocation H04L47/70
• CPC Class Codes: H04L 69/18 Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
• CPC Class Codes: H04Q 9/00 Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
• CPC Class Codes: H04W 12/03 Protecting confidentiality, e.g. by encryption
• CPC Class Codes: H04W 28/0215 based on user or device properties, e.g. MTC-capable devices services for machine-to-machine communication [M2M] or machine type communication [MTC] H04W4/70; wireless resource selection or allocation plan definition based on terminal or device properties H04W72/51
• CPC Class Codes: H04W 28/06 : Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 36/0009 : for a plurality of users or terminals, e.g. group communication or moving wireless networks user group management H04W4/08; processing of subscriber group data H04W8/186
• CPC Class Codes: H04W 36/08 : Reselecting an access point
• CPC Class Codes: H04W 4/00 : Services specially adapted for wireless communication networks; Facilities therefor
• CPC Class Codes: H04W 4/10 : Push-to-Talk [PTT] or Push-On-Call services
• CPC Class Codes: H04W 4/40 : for vehicles, e.g. vehicle-to-pedestrians [V2P]
• CPC Class Codes: H04W 40/02 : Communication route or path selection, e.g. power-based or shortest path routing
• CPC Class Codes: H04W 40/20 : based on geographic position or location
• CPC Class Codes: H04W 48/02 : Access restriction performed under specific conditions
• CPC Class Codes: H04W 48/06 : based on traffic conditions
• CPC Class Codes: H04W 48/16 : Discovering, processing access restriction or access information
• CPC Class Codes: H04W 48/18 : Selecting a network or a communication service
• CPC Class Codes: H04W 52/0206 : in access points, e.g. base stations access point devices per se H04W88/08
• CPC Class Codes: H04W 52/0219 : where the power saving management affects multiple terminals
• CPC Class Codes: H04W 52/0264 : by selectively disabling software applications
• CPC Class Codes: H04W 52/12 : Outer and inner loops
• CPC Class Codes: H04W 52/143 : Downlink power control
• CPC Class Codes: H04W 52/225 : Calculation of statistics, e.g. average, variance
• CPC Class Codes: H04W 52/241 : taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
• CPC Class Codes: H04W 52/346 : distributing total power among users or channels
• CPC Class Codes: H04W 72/20 : Control channels or signalling for resource management
• CPC Class Codes: H04W 72/23 : in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/53 : based on regulatory allocation policies
• CPC Class Codes: H04W 76/45 : for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services
• CPC Class Codes: H04W 8/06 : Registration at serving network Location Register, VLR or user mobility server
• CPC Class Codes: H04W 8/08 : Mobility data transfer
• CPC Class Codes: H04W 8/26 : Network addressing or numbering for mobility support
• CPC Class Codes: H04W 80/02 : Data link layer protocols
• CPC Class Codes: H04W 84/005 : Moving wireless networks
• CPC Class Codes: H04W 84/12 : WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 92/18 : between terminal devices
• CPC Class Codes: Y02A 30/60 : Planning or developing urban green infrastructure
• CPC Class Codes: Y02D 30/70 : in wireless communication networks

Abstract

A system includes an on-board unit (OBU) in communication with an internal subsystem in a vehicle on at least one Ethernet network and a node on a wireless network. A method in one embodiment includes receiving a message on the Ethernet network in the vehicle, encapsulating the message to facilitate translation to Ethernet protocol if the message is not in Ethernet protocol, and transmitting the message in Ethernet protocol to its destination. Certain embodiments include optimizing data transmission over the wireless network using redundancy caches, dictionaries, object contexts databases, speech templates and protocol header templates, and cross layer optimization of data flow from a receiver to a sender over a TCP connection. Certain embodiments also include dynamically identifying and selecting an operating frequency with least interference for data transmission over the wireless network.

Claims

1. An on-board unit (OBU) of a vehicle, the OBU comprising:

at least one database for storing content; and

a hardware processor configured to execute instructions to;

receive a first data block from a first node in a vehicular network, the first data block including a header portion and a data portion;

access the content in the database;

compare the data portion of the first data block to the content;

determine whether a criterion is met, wherein the criterion is based, at least in part, on a type of data contained in the data portion of the first data block;

compress the first data block to a second data block if the criterion is met, wherein compression of the first data block includes compression of the data portion of the first data block based, at least in part, on the content; and

send, via a wireless communication link, the second data block to a controller.

2. The OBU of claim 1, wherein the controller is configured to:

receive a third data block from a second node;

access second content in a second database;

compare the third data block to the second content;

determine whether a second criterion is met, wherein the second criterion is based, at least in part, on a type of data contained in the third data block;

compress the third data block to a fourth data block if the second criterion is met, wherein compression of the third data block is based, at least in part, on the second content; and

send the fourth data block to the OBU.

3. The OBU of claim 1, wherein:

the content comprises a plurality of previously stored data blocks;

when the first data block is compressed to the second data block, a first data string in the first data block is replaced with a signature containing instructions to convert the second data block back to the first data block; and

the criterion is met if the first data string in the first data block corresponds to a second data string in one of the plurality of previously stored data blocks.

4. The OBU of claim 1, wherein the processor is configured to execute the instructions to:

compare the header portion of the first data block to second content;

determine whether a second criterion is met based, at least in part, on the comparison, wherein the second content comprises a plurality of protocol header templates containing previously stored protocol header information associated with corresponding tokens; and

when the first data block is compressed to the second data block, replace a protocol header information in the header portion of the first data block with a corresponding token from the second content,

wherein the criterion is met if the protocol header information in the header portion of the first data block corresponds to at least one protocol header template in the second content.

5. The OBU of claim 1, wherein:

the content comprises translations of a plurality of phrases to corresponding words;

when the first data block is compressed to the second data block, a phrase in the first data block is replaced with corresponding words from the content; and

the criterion is met if the phrase in the first data block corresponds to at least one phrase in the content.

6. The OBU of claim 1, wherein:

the content comprises a plurality of speech templates containing representations of audio from a plurality of users by corresponding index values;

when the first data block is compressed to the second data block, an audio from a user in the first data block is replaced with corresponding index values from the content; and

the criterion is met if the audio from the user in the first data block corresponds to at least one speech template in the content.

7. The OBU of claim 6, wherein when the first data block is compressed to the second data block, other audio in the first data block is replaced with corresponding text.

8. The OBU of claim 1, wherein the OBU communicates with a remote transaction system via the controller.

9. The OBU of claim 1, wherein the first node is an in-vehicle device.

10. At least one non-transitory machine-readable medium comprising instructions stored thereon that, when executed, cause at least one processor to:

receive, on an on-board unit (OBU) of a vehicle, a first data block from a first node in a vehicular network, the first data block including a header portion and a data portion;

access content in a database;

compare the data portion of the first data block to the content;

determine whether a criterion is met, wherein the criterion is based, at least in part, on a type of data contained in the data portion of the first data block;

compress the first data block to a second data block if the criterion is met, wherein compression of the first data block includes compression of the data portion of the first data block based, at least in part, on the content; and

send, via a wireless communication link, the second data block to a controller.

11. The at least one non-transitory machine-readable medium of claim 10, wherein the instructions, when executed, cause the at least one processor to:

receive a third data block from the controller;

access the content in the database;

compare the third data block to the content;

determine whether another criterion is met;

decompress the third data block to a fourth data block if the other criterion is met; and

send the fourth data block to the first node.

12. The at least one non-transitory machine-readable medium of claim 10, wherein:

the content comprises a plurality of previously stored data blocks;

when the first data block is compressed to the second data block, a first data string in the first data block is replaced with a signature containing instructions to convert the second data block back to the first data block; and

the criterion is met if the first data string in the first data block corresponds to a second data string in one of the plurality of previously stored data blocks.

13. The at least one non-transitory machine-readable medium of claim 10, wherein the instructions, when executed, cause the at least one processor to:

compare the header portion of the first data block to second content;

determine whether a second criterion is met based, at least in part, on the comparison, wherein the compression of the first data block includes compression of the header portion of the first data block based, at least in part, on the second content.

14. The at least one non-transitory machine-readable medium of claim 10, wherein:

the content comprises a plurality of speech templates containing representations of audio from a plurality of users by corresponding index values;

when the first data block is compressed to the second data block, an audio from a user in the first data block is replaced with corresponding index values from the content; and

the criterion is met if the audio from the user in the first data block corresponds to at least one speech template in the content.

15. The at least one non-transitory machine-readable medium of claim 14, wherein when the first data block is compressed to the second data block, other audio in the first data block is replaced with corresponding text.

16. A method comprising:

receiving, by a hardware processor of an on-board unit (OBU) of a vehicle, a first data block from a first node in a vehicular network, the first data block including a header portion and a data portion;

accessing content in a database;

comparing the data portion of the first data block to the content;

determining whether a criterion is met, wherein the criterion is based, at least in part, on a type of data contained in the data portion of the first data block;

compressing the first data block to a second data block if the criterion is met, wherein compression of the first data block includes compression of the data portion of the first data block based, at least in part, on the content; and

sending, via a wireless communication link, the second data block to a controller.

17. The method of claim 16, wherein the controller is configured to:

receive a third data block from a second node;

access second content in a second database;

compare the third data block to the second content;

determine whether a second criterion is met, wherein the second criterion is based, at least in part, on a type of data contained in the third data block;

compress the third data block to a fourth data block if the second criterion is met, wherein compression of the third data block is based, at least in part, on the second content; and

send the fourth data block to the OBU.

18. The method of claim 16, further comprising:

comparing the header portion of the first data block to second content;

determining whether a second criterion is met based, at least in part, on the comparison, wherein the second content comprises a plurality of protocol header templates containing previously stored protocol header information associated with corresponding tokens,

wherein the compressing includes replacing a protocol header information in the header portion of the first data block with a corresponding token from the second content, and

wherein the criterion is met if the protocol header information in the header portion of the first data block corresponds to at least one protocol header template in the second content.

19. The method of claim 16, wherein:

the content comprises a plurality of speech templates containing representations of audio from a plurality of users by corresponding index values;

the compressing includes replacing an audio from a user in the first data block with corresponding index values from the content; and

the criterion is met if the audio from a user in the first data block corresponds to at least one speech template in the content.

20. A system, comprising:

an internal subsystem in a vehicle comprising a plurality of sensors, actuators and vehicle controllers adapted to control the vehicle; and

an on-board unit (OBU) in communication with the internal subsystem on a first network, and a node on a second network, wherein the first network comprises at least one Ethernet network including a first Ethernet switch coupled to the OBU, wherein the first Ethernet switch is adapted to facilitate communication between the plurality of sensors, actuators and vehicle controllers in the internal subsystem; and

the second network comprises a wireless network, wherein the OBU is configured to;

facilitate a Transmission Control Protocol (TCP) connection between a sender and a receiver;

forward data packets from the sender to the receiver;

receive a first acknowledgement packet from the receiver, wherein the first acknowledgement packet contains a first receiver window size;

modify the first acknowledgement packet to a second acknowledgement packet based on a criterion, wherein the modifying the first acknowledgement packet comprises changing the first receiver window size to a second receiver window size; and

forward the second acknowledgement packet to the sender.