Streaming traffic classification method and apparatus

• US 9,137,286 B1
• Filed: 11/11/2013
• Issued: 09/15/2015
• Est. Priority Date: 11/27/2006
• Status: Active Grant

• Current Assignee: Marvell Asia Pte Limited (Marvell Technology Group Limited)
• Original Assignee: Marvell International Limited (Marvell Technology Group Limited)
• Inventors: Yuan, Donglei
• Primary Examiner(s): Algibhah, Hamza
• Assistant Examiner(s): EDWARDS, JAMES A
• Application Number:
  US14/076,811
• Time in Patent Office: 673 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04L 65/1083 In-session procedures
• CPC Class Codes: H04L 65/612 for unicast
• CPC Class Codes: H04L 65/65 Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
• CPC Class Codes: H04L 65/765 intermediate
• CPC Class Codes: H04N 21/2385 Channel allocation H04N21/266 takes precedence; Bandwidth allocation H04N21/24 takes precedence ; allocation of channels according to the instantaneous demands of the users in time-division multiplex systems H04J3/1682; admission control, resource allocation in open networks H04L12/5692; arrangements for maintenance or administration in data switching networks involving bandwidth and capacity management H04L41/0896; negotiating bandwidth in wireless networks H04W28/16
• CPC Class Codes: H04N 21/43615 Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals home Audio Video Interoperability [HAVI] data switching networks H04L12/2805
• CPC Class Codes: H04N 21/43637 involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11] arrangements for wireless networking or broadcasting of information in indoor or near-field type systems H04B10/114
• CPC Class Codes: H04N 21/44209 Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network arrangements for maintenance or administration in data switching networks involving bandwidth and capacity management H04L41/0896
• CPC Class Codes: H04N 21/643 Communication protocols network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP], H04L65/65
• CPC Class Codes: H04N 7/17336 Handling of requests in head-ends

Abstract

In a method of classifying streaming media data, one or more media servers are identified. In response, the media servers are added to a list of media servers. It is determined that one or more messages sent by one or more clients are sent to a first media server included on the list of media servers. In response, the one or more clients are added to a list of clients that is associated with the first media server. It is determined that a request for streaming media is sent to the first media server by a first client included on the list of clients. In response, a rule to determine whether subsequent traffic between the first media server and the first client is utilized. Data packets within the subsequent traffic are classified as high priority when the data packets satisfy the rule.

Claims

1. A method of classifying, at a wireless access point (AP), streaming media data, the method comprising:

identifying, at the wireless AP, one or more media servers;

in response to identifying the one or more media servers, adding, at the wireless AP, the one or more media servers to a list of media servers maintained at the wireless AP;

determining, at the wireless AP, that one or more messages sent by one or more clients are sent to a first media server included on the list of media servers;

in response to determining that the one or more messages sent by the one or more clients are sent to the first media server included on the list of media servers, adding, at the wireless AP, the one or more clients to a list of clients that is (i) maintained at the wireless AP and (ii) associated with the first media server;

determining, at the wireless AP, that a request for streaming media is sent to the first media server included on the list of media servers by a first client included on the list of clients associated with the first media server;

in response to determining that the request for streaming media is sent to the first media server included on the list of media servers by the first client included on the list of clients, utilizing, at the wireless AP, a rule to determine whether subsequent traffic between the first media server included on the list of media servers and the first client included on the list of clients is streaming media traffic; and

classifying, at the wireless AP, data packets within the subsequent traffic as high priority when the data packets satisfy the rule.

2. The method of claim 1, wherein identifying the one or more media servers includes identifying the first media server based on at least one of:

a discovery request sent to the first media server;

a discovery response sent by the first media server;

a browsing/searching request sent to the first media server;

a browsing/searching response sent by the first media server;

a handshaking message sent to the first media server;

or

a handshaking message sent by the first media server.

3. The method of claim 1, wherein identifying the one or more media servers includes identifying the first media server by detecting a notification broadcast by the first media server.

4. The method of claim 1, wherein determining that one or more messages sent by one or more clients are sent to the first media server included on the list of media servers includes detecting at least one of:

a browsing/searching request sent to the first media server by the first client;

or

a handshaking message sent to the first media server by the first client.

5. The method of claim 1, wherein utilizing a rule to determine whether subsequent traffic between the first media server included on the list of media servers and the first client included on the list of clients is streaming media traffic includes determining whether each data packet within the subsequent traffic has at least one of:

a source Internet Protocol (IP) address matching a pattern associated with the rule;

a destination IP address matching a pattern associated with the rule;

a source Transmission Control Protocol (TCP) port number matching a pattern associated with the rule;

a destination TCP port number matching a pattern associated with the rule;

a source User Datagram Protocol (UDP) port number matching a pattern associated with the rule;

or

a destination UDP port number matching a pattern associated with the rule.

6. The method of claim 1, wherein, for each data packet within the subsequent traffic:

utilizing a rule to determine whether subsequent traffic between the first media server included on the list of media servers and the first client included on the list of clients is streaming media traffic includes

generating a pattern based on two or more of (i) a source Internet Protocol (IP) address of the data packet, (ii) a destination IP address of the data packet, (iii) a source Transmission Control Protocol (TCP) port number of the data packet, (iv) a destination TCP port number of the data packet, (v) a source User Datagram Protocol (UDP) port number of the data packet, or (vi) a destination UDP port number of the data packet, and

determining whether the pattern matches a pattern associated with the rule; and

classifying the data packets within the subsequent traffic as high priority when the data packets satisfy the rule includes classifying the data packet as high priority when it is determined that the pattern matches the pattern associated with the rule.

7. The method of claim 1, wherein the rule is a first rule stored in a rules database, and wherein the method further comprises:

determining that a second rule stored in the rules database is obsolete; and

in response to determining that the second rule is obsolete, removing the second rule from the rules database.

8. The method of claim 7, wherein determining that the second rule is obsolete includes determining that the second rule has not been met for a predetermined time period.

9. The method of claim 1, wherein utilizing a rule to determine whether subsequent traffic between the first media server included on the list of media servers and the first client included on the list of clients is streaming media traffic includes, for each data packet within the subsequent traffic:

determining whether the data packet satisfies a superset rule; and

when it is determined that the data packet satisfies the superset rule, determining whether the data packet satisfies a rule associated with the superset rule.

10. A wireless access point (AP) device comprising:

a relationship database configured to store (i) a list of media servers and (ii) a respective list of clients for each media server on the list of media servers;

a rules database configured to store a plurality of rules;

a monitor module configured to

identify one or more media servers,

in response to the monitor module identifying the one or more media servers, add the one or more media servers to the list of media servers,

determine that one or more messages sent by one or more clients are sent to a first media server included on the list of media servers,

in response to the monitor module determining that the one or more messages sent by the one or more clients are sent to the first media server included on the list of media servers, add the one or more clients to the list of clients that is (i) stored in the relationship database and (ii) associated with the first media server, and

determine that a request for streaming media is sent to the first media server included on the list of media servers by a first client included on the list of clients associated with the first media server; and

a classification module configured to

in response to the monitor module determining that the request for streaming media is sent to the first media server included on the list of media servers by the first client included on the list of clients, utilize a rule to determine whether subsequent traffic between the first media server included on the list of media servers and the first client included on the list of clients is streaming media traffic, and

classify data packets within the subsequent traffic as high priority when the data packets satisfy the rule.

11. The wireless AP device of claim 10, wherein the monitor module is configured to identify the one or more media servers at least by identifying the first media server based on at least one of:

a discovery request sent to the first media server;

a discovery response sent by the first media server;

a browsing/searching request sent to the first media server;

a browsing/searching response sent by the first media server;

a handshaking message sent to the first media server;

or

a handshaking message sent by the first media server.

12. The wireless AP device of claim 10, wherein the monitor module is configured to determine that one or more messages sent by one or more clients are sent to the first media server at least by detecting at least one of:

a browsing/searching request sent to the first media server by the first client;

or

a handshaking message sent to the first media server by the first client.

13. The wireless AP device of claim 10, wherein the classification module is configured to utilize a rule to determine whether subsequent traffic between the first media server included on the list of media servers and the first client included on the list of clients is streaming media traffic at least by determining whether each data packet within the subsequent traffic has at least one of:

a source Internet Protocol (IP) address matching a pattern associated with the rule;

a destination IP address matching a pattern associated with the rule;

a source Transmission Control Protocol (TCP) port number matching a pattern associated with the rule;

a destination TCP port number matching a pattern associated with the rule;

a source User Datagram Protocol (UDP) port number matching a pattern associated with the rule;

or

a destination UDP port number matching a pattern associated with the rule.

14. The wireless AP device of claim 10, wherein, for each data packet within the subsequent traffic:

the monitor module is configured to utilize a rule to determine whether subsequent traffic between the first media server included on the list of media servers and the first client included on the list of clients is streaming media traffic at least by

generating a pattern based on two or more of (i) a source Internet Protocol (IP) address of the data packet, (ii) a destination IP address of the data packet, (iii) a source Transmission Control Protocol (TCP) port number of the data packet, (iv) a destination TCP port number of the data packet, (v) a source User Datagram Protocol (UDP) port number of the data packet, or (vi) a destination UDP port number of the data packet, and

determining whether the pattern matches a pattern associated with the rule; and

the classification module is configured to classify the data packets within the subsequent traffic as high priority when the data packets satisfy the rule at least by classifying the data packet as high priority when it is determined that the pattern matches the pattern associated with the rule.

15. The wireless AP device of claim 10, wherein the classification module is configured to utilize a rule to determine whether subsequent traffic between the first media server included on the list of media servers and the first client included on the list of clients is streaming media traffic at least by, for each data packet within the subsequent traffic:

determining whether the data packet satisfies a superset rule; and

when it is determined that the data packet satisfies the superset rule, determining whether the data packet satisfies a rule associated with the superset rule.

16. A tangible, non-transitory computer-readable memory storing instructions that, when executed by one or more processors, cause the one or more processors to:

identify one or more media servers;

in response to identifying the one or more media servers, add the one or more media servers to a list of media servers maintained at a wireless access point (AP);

determine that one or more messages sent by one or more clients are sent to a first media server included on the list of media servers;

in response to determining that the one or more messages sent by the one or more clients are sent to the first media server included on the list of media servers, add the one or more clients to a list of clients that is (i) maintained at the wireless AP and (ii) associated with the first media server;

determine that a request for streaming media is sent to the first media server included on the list of media servers by a first client included on the list of clients associated with the first media server;

in response to determining that the request for streaming media is sent to the first media server included on the list of media servers by the first client included on the list of clients, utilize a rule to determine whether subsequent traffic between the first media server included on the list of media servers and the first client included on the list of clients is streaming media traffic; and

classify data packets within the subsequent traffic as high priority when the data packets satisfy the rule.

17. The tangible, non-transitory computer-readable memory of claim 16, wherein the instructions cause the one or more processors to determine that one or more messages sent by the one or more clients are sent to the first media server included on the list of media servers at least by detecting at least one of:

a browsing/searching request sent to the first media server by the first client;

or

a handshaking message sent to the first media server by the first client.

18. The tangible, non-transitory computer-readable memory of claim 16, wherein the instructions cause the one or more processors to utilize a rule to determine whether subsequent traffic between the first media server included on the list of media servers and the first client included on the list of clients is streaming media traffic at least by determining whether each data packet within the subsequent traffic has at least one of:

a source Internet Protocol (IP) address matching a pattern associated with the rule;

a destination IP address matching a pattern associated with the rule;

a source Transmission Control Protocol (TCP) port number matching a pattern associated with the rule;

a destination TCP port number matching a pattern associated with the rule;

a source User Datagram Protocol (UDP) port number matching a pattern associated with the rule;

or

a destination UDP port number matching a pattern associated with the rule.

19. The tangible, non-transitory computer-readable memory of claim 16, wherein the instructions cause the one or more processors to, for each data packet within the subsequent traffic:

utilize a rule to determine whether subsequent traffic between the first media server included on the list of media servers and the first client included on the list of clients is streaming media traffic at least by

generating a pattern based on two or more of (i) a source Internet Protocol (IP) address of the data packet, (ii) a destination IP address of the data packet, (iii) a source Transmission Control Protocol (TCP) port number of the data packet, (iv) a destination TCP port number of the data packet, (v) a source User Datagram Protocol (UDP) port number of the data packet, or (vi) a destination UDP port number of the data packet, and

determining whether the pattern matches a pattern associated with the rule; and

classify the data packets within the subsequent traffic as high priority when the data packets satisfy the rule at least by classifying the data packet as high priority when it is determined that the pattern matches the pattern associated with the rule.

20. The tangible, non-transitory computer-readable memory of claim 16, wherein the instructions cause the one or more processors to utilize a rule to determine whether subsequent traffic between the first media server included on the list of media servers and the first client included on the list of clients is streaming media traffic at least by, for each data packet within the subsequent traffic:

determining whether the data packet satisfies a superset rule; and

when it is determined that the data packet satisfies the superset rule, determining whether the data packet satisfies a rule associated with the superset rule.