DYNAMIC CODING FOR NETWORK TRAFFIC BY FOG COMPUTING NODE

• US 20150181460A1
• Filed: 12/20/2013
• Published: 06/25/2015
• Est. Priority Date: 12/20/2013
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: CHAN, Douglas, BONOMI, Flavio, SUBRAMANIAN, Vijaynarayanan, MOGHE, Ashok Krishnaji, PAN, Rong
• Granted Patent: US 9,232,433 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 2001/0092 Error control systems characterised by the topology of the transmission link
• CPC Class Codes: H04L 69/14 Multichannel or multilink protocols
• CPC Class Codes: H04L 69/163 In-band adaptation of TCP data exchange; In-band control procedures
• CPC Class Codes: H04L 69/24 Negotiation of communication capabilities
• CPC Class Codes: H04W 28/0236 radio quality, e.g. interference, losses or delay
• CPC Class Codes: H04W 28/0247 based on conditions of the access network or the infrastructure network central resource management H04W28/16
• CPC Class Codes: H04W 28/0273 adapting protocols for flow control or congestion control to wireless environment, e.g. adapting transmission control protocol [TCP] wireless network protocols or protocol adaptations to wireless operation, e.g. wireless application protocol H04W80/00

Abstract

In one embodiment, a method comprises determining access network conditions by a network device in an access network, the access network providing communications between a client device and a destination reachable via a data network; selecting, by the network device based on the access network conditions, one of a plurality of coding methods for network traffic between the client device and the destination, including selecting coding parameters for the one coding method; and causing, by the network device, coding to be executed on the network traffic, on behalf of the client device, according to the one coding method and the selected coding parameters.

Claims

1. A method comprising:

determining access network conditions by a network device in an access network, the access network providing communications between a client device and a destination reachable via a data network;

selecting, by the network device based on the access network conditions, one of a plurality of coding methods for network traffic between the client device and the destination, including selecting coding parameters for the one coding method; and

causing, by the network device, coding to be executed on the network traffic, on behalf of the client device, according to the one coding method and the selected coding parameters.

2. The method of claim 1, wherein the causing includes the network device outputting, to an access point in the access network, an instruction specifying the one coding method and the selected coding parameters, enabling the access point to convert between the network traffic and coded network traffic in response to the instructions.

3. The method of claim 2, wherein:

the access point is a fixed wireless access point;

the causing including the network device outputting the instruction to the fixed wireless access point and a mobile access point in communication with the fixed wireless access point via a wireless data link, enabling the fixed wireless access point and the mobile access point to establish the coded network traffic across the wireless data link.

4. The method of claim 2, wherein the access point is a mobile access point in a connected vehicle, enabling the coded network traffic to be transmitted between the mobile access point and the destination via the data network.

5. The method of claim 1, wherein the causing of coding to be executed includes replacing Transmission Control Protocol (TCP) transmission of the network traffic with coded-TCP transmission of encoded data packets according to the one coding method, the coding method including any one of a forward error correction (FEC) coding or network coding.

6. The method of claim 1, wherein the determining includes receiving a coding request from the client device for executing the coding using an identified method specified in the request, for an identified transport stream.

7. The method of claim 1, wherein the causing includes switching the coding to be executed from the one coding method on at least one identified transport stream of the network traffic, or changing the selected coding parameters, in response to a detected change in the access network conditions.

8. The method of claim 7, wherein the determining of access network conditions includes at least one of:

determining a number of transport streams that need to be coded concurrently, relative to a memory and processing capacity of an encoding device used to execute the coding;

determining a loss rate of at least one data channel used for transport of the network traffic between the client device and the destination;

or

determining a priority of the at least one identified transport stream.

9. The method of claim 8, wherein the switching includes changing the selected coding parameters on the at least one identified transport stream based on any one of the corresponding loss rate, the corresponding priority, or a change in the number of transport streams that need to be coded concurrently.

10. An apparatus comprising:

a processor circuit configured for;

determining access network conditions in an access network, the access network providing communications between a client device and a destination reachable via a data network, and

selecting, based on the access network conditions, one of a plurality of coding methods for network traffic between the client device and the destination, including selecting coding parameters for the one coding method; and

a device interface circuit configured for causing coding to be executed on the network traffic, on behalf of the client device, according to the one coding method and the selected coding parameters.

11. The apparatus of claim 10, wherein the causing includes the network device outputting, to an access point in the access network, an instruction specifying the one coding method and the selected coding parameters, enabling the access point to convert between the network traffic and coded network traffic in response to the instructions.

12. The apparatus of claim 11, wherein:

the access point is a fixed wireless access point;

the causing including the network device outputting the instruction to the fixed wireless access point and a mobile access point in communication with the fixed wireless access point via a wireless data link, enabling the fixed wireless access point and the mobile access point to establish the coded network traffic across the wireless data link.

13. The apparatus of claim 11, wherein the access point is a mobile access point in a connected vehicle, enabling the coded network traffic to be transmitted between the mobile access point and the destination via the data network.

14. The apparatus of claim 10, wherein the causing of coding to be executed includes replacing Transmission Control Protocol (TCP) transmission of the network traffic with coded-TCP transmission of encoded data packets according to the one coding method, the coding method including any one of a forward error correction (FEC) coding or network coding.

15. The apparatus of claim 10, wherein the determining includes receiving a coding request from the client device for executing the coding using an identified method specified in the request, for an identified transport stream.

16. The apparatus of claim 10, wherein the causing includes switching the coding to be executed from the one coding method on at least one identified transport stream of the network traffic, or changing the selected coding parameters, in response to a detected change in the access network conditions.

17. The apparatus of claim 16, wherein the determining of access network conditions includes at least one of:

determining a number of transport streams that need to be coded concurrently, relative to a memory and processing capacity of an encoding device used to execute the coding;

determining a loss rate of at least one data channel used for transport of the network traffic between the client device and the destination;

or

determining a priority of the at least one identified transport stream.

18. The apparatus of claim 17, wherein the switching includes changing the selected coding parameters on the at least one identified transport stream based on any one of the corresponding loss rate, the corresponding priority, or a change in the number of transport streams that need to be coded concurrently.

19. Logic encoded in one or more non-transitory tangible media for execution by a machine and when executed by the machine operable for:

determining access network conditions by a network device in an access network, the access network providing communications between a client device and a destination reachable via a data network;

selecting, by the network device based on the access network conditions, one of a plurality of coding methods for network traffic between the client device and the destination, including selecting coding parameters for the one coding method; and

causing, by the network device, coding to be executed on the network traffic, on behalf of the client device, according to the one coding method and the selected coding parameters.

20. The logic of claim 19, wherein the causing includes the network device outputting, to an access point in the access network, an instruction specifying the one coding method and the selected coding parameters, enabling the access point to convert between the network traffic and coded network traffic in response to the instructions.