System and method for efficiently managing data transports

• US 7,069,326 B1
• Filed: 09/27/2002
• Issued: 06/27/2006
• Est. Priority Date: 09/27/2002
• Status: Expired due to Fees

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Danger Incorporated (Microsoft Corporation)
• Inventors: Bush, Jeffrey
• Primary Examiner(s): Jaroenchonwanit, Bunjob
• Assistant Examiner(s): Chankong, Dohm
• Application Number:
  US10/260,063
• Publication Number:
  US 20060143294A1
• Time in Patent Office: 1,369 Days
• Field of Search: 709/226, 709/228, 709/223, 709/224, 709/233
• US Class Current: 709/226
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/15 in relation to multipoint traffic arrangements for broadcast or multicast in data networks H04L12/18
• CPC Class Codes: H04L 47/193 at the transport layer, e.g. TCP related
• CPC Class Codes: H04L 47/70 Admission control; Resource allocation
• CPC Class Codes: H04L 47/762 triggered by the network
• CPC Class Codes: H04L 47/803 Application aware
• CPC Class Codes: H04L 47/805 QOS or priority aware
• CPC Class Codes: H04L 47/824 Applicable to portable or mobile terminals
• CPC Class Codes: H04W 28/10 Flow control between communication endpoints
• CPC Class Codes: H04W 8/04 Registration at HLR or HSS [Home Subscriber Server]

Abstract

A system is described for allocating bandwidth comprising: a transport layer to support a first socket connection for a first application and a second socket connection for a second application; and a socket prioritization module to allocate relatively more bandwidth to the first socket connection relative to the second socket connection, wherein allocation of bandwidth is based on one or more characteristics of the first application and/or the second application.

Claims

1. A method implemented on a data processing device communicatively coupled to a network comprising:

associating interactive applications with a first type of socket connection and non-interactive applications with a second type of socket connection;

in response to detecting that an interactive application needs to transmit or receive data over the network, opening a first socket connection of the first type for the interactive application and allocating a first amount of bandwidth to the first socket connection by setting a maximum data transport window size for the first socket connection to a first value;

in response to detecting that a non-interactive application needs to transmit or receive data over the network, opening a second type of socket connection for the non-interactive application and allocating a second amount of bandwidth to the second socket connection by periodically setting a maximum data transport window size for the second socket connection to a second value and then resetting the maximum data transport window size to a third value once a specified amount of data has been transmitted, wherein the third value is less than the first value and the second value, and further wherein the second socket connection remains open concurrently with the first socket connection, and further wherein the second value is related to how many concurrent socket connections exist when the second socket connection is initially opened and a priority associated with each concurrent socket connection;

in response to detecting that a first type of socket connection is no longer being used by the interactive application, automatically increasing the second amount of bandwidth to the second socket connection by increasing the maximum data transport window size for the second socket connection; and

in response to detecting that a first type of socket connection is again being used by the interactive application, automatically decreasing the second amount of bandwidth to the second socket connection by again periodically setting a maximum data transport window size for the second socket connection to the second value and then resetting the maximum data transport window size to a third value once a specified amount of data has been transmitted, wherein the third value is less than the first value and the second value,

wherein the increasing the second amount of bandwidth to the second socket connection automatically increases the maximum data transport window size of the second socket connection after each of a plurality of successive predetermined time intervals and automatically reset the maximum data transport window size of the second socket connection upon transmitting the second-maximum data window size amount of data over the second socket connection.

2. The method as in claim 1 wherein the specified amount of data is equal to said second data transport window size and wherein the third data transport window size is equal to zero.

3. The method as in claim 1 further comprising:

when a first type of socket connection is being used, maintaining the second amount of bandwidth allocated to the second socket connection by periodically resetting said second maximum data transport window size to zero.

4. The method as in claim 1 further comprising:

resetting said second maximum data transport window size to zero once data from said second data transport window has been successfully received, and then periodically resetting said second maximum data transport window size for said second socket connection to said second value.

5. The method as in claim 1 wherein said first and second socket connections are Transmission Control Protocol (“

TCP”

) socket connections.

6. The method as in claim 1 wherein said interactive application is a Web browser application and said non-interactive application is an automated software upgrade application.

7. A system for allocating bandwidth comprising:

a transport layer to support a first socket connection for a first application and a second socket connection for a second application, wherein the second socket connection remains open concurrently with the first socket connection; and

a socket prioritization module to allocate relatively more bandwidth to said first socket connection relative to said second socket connection by using a larger maximum data transport window size for the first socket connection than the maximum data transport window size used for the second socket connection, wherein allocation of bandwidth by the socket prioritization module is in response to detecting that the second application needs to transmit or receive data over a network, based on one or more characteristics of said first application and said second application, and automatically increases the maximum data transport window size of the second socket connection after each of a plurality of successive predetermined time intervals and automatically resets the maximum data transport window size of the second socket connection upon transmitting the second-maximum data window size amount of data over the second socket connection, wherein the maximum data transport window size used for the second socket connection is related to how many concurrent socket connections exist when the second socket connection is initially opened and a priority associated with each concurrent socket connection.

8. The system as in claim 7 wherein after transmitting the maximum data window size amount of data over the second socket connection, the maximum data window size is set to zero.

9. The system as in claim 7 wherein allocating bandwidth for said first socket connection comprises initially setting a first maximum data transport window size for said first socket connection to a first value;

and

wherein allocating bandwidth for said second socket connection comprises initially setting a second maximum data transport window size for said second socket connection to a second value which is smaller than said first value, resetting said second maximum data transport window size to zero each time data from said second socket has been successfully received and then periodically resetting said second maximum data transport window size to said second value.

10. The system as in claim 7 wherein said first and second socket connections are Transmission Control Protocol (“

TCP”

) socket connections.

11. The system as in claim 7 wherein a characteristic of said first application is that it is a user-interactive network application and wherein a characteristic of said second type of application is that it is a non-interactive network application.

12. The system as in claim 11 wherein said first application is a Web browser application and said second application is an automated software upgrade application.

13. A method comprising:

in response to detecting that an application needs to transmit or receive data over a network, initiating a new socket connection within a network transport layer on a data processing device;

determining whether any other socket connections are active on said data processing device;

comparing a priority value associated with said new socket connection with said active socket connections; and

in further response to detecting that the application needs to transmit or receive data over the network, decreasing bandwidth to an active socket connection of said active socket connections if said priority value associated with said new socket connection is higher relative to said active socket connection, wherein decreasing bandwidth includes automatically decreasing a maximum data window size of the active socket connection after each of a plurality of predetermined time intervals; and

automatically resetting the maximum data window size of the active socket connection upon transmitting the bandwidth of the active socket of data over the active socket connection, and further wherein the maximum data window size is related to how many other active socket connections exist when the active socket connection is initially opened and the Priority value associated with the active socket connection and each of the other active socket connections.

14. The method as in claim 13 wherein reallocating bandwidth comprises dynamically adjusting maximum transport window sizes for active socket connection.

15. The method as in claim 14 wherein dynamically adjusting comprises:

limiting bandwidth for a first socket connections relative to said active socket connections by providing said first socket connection with a relatively smaller transport window size and/or by resetting said transport window size to zero for said transport window after all data contained in said active socket connection has been received and then periodically resetting said transport window back to said relatively smaller transport window size.

16. The method as in claim 15 further comprising:

providing a standard maximum transport window size for said active socket connection and not resetting said maximum transport window sizes to zero for said active socket connection.

17. The method as in claim 13 wherein said transport layer is a Transmission Control Protocol (“

TCP”

) transport layer.