Adapting transmission to improve QoS in a mobile wireless device

• US 8,750,207 B2
• Filed: 10/15/2010
• Issued: 06/10/2014
• Est. Priority Date: 10/15/2010
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: Jeong, Hyeonkuk, Shiva, Sundararaman V., Yang, Yan, Abuan, Joe S., Shi, Jianxiong, Zhou, Xiaosong
• Primary Examiner(s): Chriss, Andrew
• Assistant Examiner(s): MAK, PETER K
• Application Number:
  US12/906,000
• Publication Number:
  US 20120092991A1
• Time in Patent Office: 1,334 Days
• Field of Search: 370/328, 370/329, 455/422.1
• US Class Current: 370/328
• CPC Class Codes: H04L 47/25 with rate being modified by the source upon detecting a change of network conditions
• CPC Class Codes: H04L 47/30 in combination with information about buffer occupancy at either end or at transit nodes
• CPC Class Codes: H04L 47/38 by adapting coding or compression rate
• CPC Class Codes: H04L 65/1083 In-session procedures
• CPC Class Codes: H04L 65/752 adapting media to network capabilities
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04L 67/04 specially adapted for terminals or networks with limited capabilities; specially adapted for terminal portability
• CPC Class Codes: H04W 28/0236 radio quality, e.g. interference, losses or delay
• CPC Class Codes: H04W 28/0252 per individual bearer or channel dynamic wireless traffic scheduling H04W72/12
• CPC Class Codes: H04W 8/04 Registration at HLR or HSS [Home Subscriber Server]

Abstract

A method and apparatus for adapting transmission to improve quality of service in a mobile wireless device that includes an application processor and a transceiver. An application service connection is established between the mobile wireless device and a remote device. The transceiver in the mobile wireless device monitors real time properties of a radio frequency access link that transports packets for the application service between the mobile wireless device and a wireless communication network. The transceiver provides local feedback to the application processor of updated values of the monitored real time properties. The application processor adjusts packet data generation and transmission in response to the updated values to manage quality of service for the application service connection. Packet data transmission adjustment includes active management of queues in the transceiver by the application processor, selectively dropping packets based on packet classifications and the local feedback information provided to the application processor.

Claims

1. A method to manage quality of service at a mobile wireless device, the method comprising:

establishing an application service connection between the mobile wireless device and a remote device via a wireless communication network;

communicating application data between the mobile wireless device and the remote device as part of the application service connection;

monitoring, by the mobile wireless device, at least one real time property of a radio frequency access link between the mobile wireless device and the wireless communication network,

wherein the at least one real time property of the radio frequency access link comprises an effective data transfer rate of a first portion of the application data communicated between the mobile wireless device and the remote device;

determining updated values of the monitored at least one real time property of the radio frequency access link; and

adjusting packet data generation for a second portion of the application data communicated between the mobile wireless device and the remote device based at least in part on the updated values of the monitored at least one real time property to manage a quality of service property of the application service connection.

2. The method as recited in claim 1, wherein the application data communicated between the mobile wireless device and the remote device includes video and audio data.

3. The method as recited in claim 1, wherein monitoring the at least one real time property of a radio frequency access link comprises measuring a number of data bytes or data bits transferred out of an application data queue of the mobile wireless device during a time interval.

4. The method as recited in claim 1, further comprising:

monitoring a level of an application data queue of the mobile wireless device,

wherein the level of the application data queue represents a number of data packets added to the application data queue and a number of data packets transferred out of the application data queue during a time interval.

5. The method as recited in claim 4, further comprising adjusting the level of the application data queue by dropping one or more data packets from the application data queue based at least in part on an application data priority of the one or more data packets dropped from the application data queue.

6. The method as recited in claim 1, wherein prior to communicating the application data between the mobile wireless device and the remote device, the application data is added to one or more application data queues that are classified according to different quality of service priorities.

7. The method as recited in claim 1, wherein the at least one real time property of the radio frequency access link further comprises a radio channel quality metric associated with an access network portion of the application service connection.

18. The method of claim 1, wherein the quality of service property of the application service connection is associated with an average data rate throughput or a packet delay for packet data communicated via the application service connection.

19. The method of claim 1, further comprising adjusting a level of application data in at least one queue of a plurality of application data queues of the mobile wireless device by selectively dropping data packets from the at least one queue of the plurality of application data queues based at least in part on a quality of service property of the application data in the at least one queue.

20. The method of claim 19, wherein the data packets are dropped from the at least one queue of the plurality of application data queues when the quality of service property of the application data in the at least one queue is lower than a corresponding quality of service property of application data in another queue of the plurality of application data queues.

8. A wireless apparatus comprising:

one or more processors;

a transceiver coupled to the one or more processors; and

a computer-readable storage medium coupled to the one or more processors, and storing computer-executable instructions, that when executed by the one or more processors, cause the wireless apparatus to;

generate data packets of a plurality of applications running at the wireless apparatus;

transfer the data packets of the plurality of applications to a remote device via a wireless communication network as part of an application service connection;

monitor a data transfer rate of a first portion of the data packets of the plurality of applications transferred to the remote device as part of the application service connection; and

adjust a packet data generation for a second portion of the data packets of the plurality of applications running at the wireless apparatus based at least in part on;

i. the monitored data transfer rate of the first portion of the data packets of the plurality of applications transferred to the remote device; and

ii. a priority assigned to corresponding data packets of each of the plurality of applications running at the wireless apparatus.

9. The wireless apparatus as recited in claim 8, wherein the priority assigned to corresponding data packets of each of the plurality of applications running at the wireless apparatus is based on an application data type of the corresponding data packets.

10. The wireless apparatus as recited in claim 8, wherein execution of the computer-executable instructions by the one or more processors further causes the wireless apparatus to:

monitor a level of an application data queue of the wireless apparatus,

wherein the level of the application data queue represents a number of data packets added to the application data queue and a number of data packets transferred out of the application data queue during a time interval.

11. The wireless apparatus as recited in claim 10, wherein execution of the computer-executable instructions by the one or more processors further causes the wireless apparatus to adjust the level of the application data queue by dropping one or more data packets from the application data queue based at least in part on an application data priority of the one or more data packets dropped from the application data queue.

12. The wireless apparatus as recited in claim 10, wherein execution of the computer-executable instructions by the one or more processors further causes the wireless apparatus to adjust the packet data generation for the second portion of the data packets of the plurality of applications running at the wireless apparatus by adjusting a codec of the wireless apparatus to provide a packet delay for data packets passing through the application data queue.

21. The wireless apparatus as recited in claim 8, wherein execution of the computer-executable instructions by the one or more processors further causes the wireless apparatus to adjust a level of application data in at least one queue of a plurality of application data queues of the wireless apparatus by selectively dropping data packets from the at least one queue of the plurality of application data queues based at least in part on a quality of service property of the application data in the at least one queue.

22. The wireless apparatus as recited in claim 21, wherein the data packets are dropped from the at least one queue of the plurality of application data queues when the quality of service property of the application data in the at least one queue is lower than a corresponding quality of service property of application data in another queue of the plurality of application data queues.

23. The wireless apparatus as recited in claim 21, wherein the quality of service property of the application data in the at least one queue of the plurality of application data queues affects how application data of the application data service connection is presented at the remote device after at least a portion of the application data in the at least one queue is transferred to the remote device.

13. A non-transitory computer-readable storage medium storing computer-executable instructions, that when executed by one or more processors, cause a mobile device to:

generate data packets of a plurality of applications;

transfer the data packets of the plurality of applications to a remote device via a wireless communication network as part of an application data service connection;

monitor a data transfer rate of a first portion of the data packets of the plurality of applications transferred to the remote device as part of the application service connection; and

adjust a packet data generation for a second portion of the data packets of the plurality of applications based at least in part on;

i. the monitored data transfer rate of the first portion of the data packets of the plurality of applications transferred to the remote device; and

ii. a priority assigned to corresponding data packets of each of the plurality of applications.

14. The non-transitory computer-readable storage medium as recited in claim 13, wherein execution of the computer-executable instructions further causes the mobile device to:

measure an amount of data packets transferred out of an application data queue of the mobile device during a time interval,

wherein the application data queue contains one or more data packets of the plurality of applications prior to transferring the one or more data packets of the plurality of applications to the remote device as part of the application data service connection.

15. The non-transitory computer-readable storage medium as recited in claim 13, wherein execution of the computer-executable instructions further causes the mobile device to adjust the transfer of the data packets of the plurality of applications to the remote device by dropping one or more data packets from an application data queue, based at least in part on an application data priority of the one or more data packets dropped from the application data queue.

16. The non-transitory computer-readable storage medium as recited in claim 13, wherein execution of the computer-executable instructions further causes the mobile device to:

adjust generation of the data packets of the plurality of applications by changing a parameter of an encoder of the mobile device,

wherein changing the parameter of the encoder adjusts a rate of packet data generation of the encoder.

17. The non-transitory computer-readable storage medium as recited in claim 13, wherein execution of the computer-executable instructions further causes the mobile device to adjust a packet delay for data packets of the plurality of applications passing through an application data queue of the mobile device.

24. The non-transitory computer-readable storage medium as recited in claim 13, wherein execution of the computer-executable instructions further causes the mobile device to adjust a level of application data in at least one queue of a plurality of application data queues of the mobile device by selectively dropping data packets from the at least one queue of the plurality of application data queues based at least in part on a quality of service property of the application data in the at least one queue.

25. The non-transitory computer-readable storage medium as recited in claim 24, wherein the data packets are dropped from the at least one queue of the plurality of application data queues when the quality of service property of the application data in the at least one queue is lower than a corresponding quality of service property of application data in another queue of the plurality of application data queues.