MECHANISM FOR STREAMING MEDIA DATA OVER WIDEBAND WIRELESS NETWORKS

• US 20070223380A1
• Filed: 03/21/2007
• Published: 09/27/2007
• Est. Priority Date: 03/22/2006
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: SiBEAM, Inc. (Lattice Semiconductor Corporation)
• Inventors: Song, Guocong, Ramchandran, Kannan, Gilbert, Jeffrey
• Granted Patent: US 7,881,258 B2
• Time in Patent Office: Days
• US Class Current: 370/235
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04L 45/24 Multipath
• CPC Class Codes: H04L 47/125 by balancing the load, e.g. traffic engineering
• CPC Class Codes: H04L 65/70 Media network packetisation
• CPC Class Codes: H04N 19/527 Global motion vector estimation
• CPC Class Codes: H04N 19/61 in combination with predictive coding

Abstract

A system is disclosed having a transmitter to Tirelessly transmit multi-media data. The transmitter includes a module to packetize phase units of a multimedia frame that is to be transmitted. The system also includes a receiver to receive the multimedia frame received from the transmitter. The receiver includes a post processing module to perform error concealment on the phase units.

Claims

1. A system comprising:

a transmitter comprising

a phased-array antenna to wirelessly transmit media data using beamforming, and

a first module coupled to the phased-array antenna to packetize phase units of media data and to determine a prioritized transmission order to transmit the packetized phase units using the phased-array antenna; and

a receiver to receive the packetized phase units from the transmitter, the receiver having a post processing module to perform error concealment on data in received packetized phase units.

2. The system defined in claim 1 wherein the first module drops media packets having a lower priority than the media packets being transmitted with the phased-array antenna.

3. The system defined in claim 1 wherein the first module calculates a weight for each packetized phase unit at an output of each of a plurality of queues and selects one packetized phase unit to transmit from one of the plurality of queues based on the weight.

4. The system defined in claim 1 wherein the first module selects one packetized phase unit to transmit from a group of packetized phase units at a head of each of a plurality of queues to transmit based on at least one parameter from a set of parameters.

5. The system defined in claim 4 wherein the set of parameters includes one or more of a group consisting of:

phase priority, delay, play deadline for a phase, queue length, and current channel condition.

6. The system defined in claim 1 wherein the transmitter further comprises a MAC and a physical layer, the MAC to control the selection of packetized phase units and cause the PHY to initiate the transmission of the video data.

7. The system defined in claim 1 further comprising a unit to keep track of which phase units have been sent to the receiver for each area of the screen.

8. The system defined in claim 7 wherein the receiver sends feedback to the transmitter regarding received phase units and the unit updates states for said each area of the screen based on the feedback.

9. The system of claim 1 wherein the first module jointly compresses and packetizes all units of a first phase of the media and jointly compresses and packetizes all units of a second phase.

10. The system of claim 1 wherein the first module prioritizes the first phase units to be packetized and transmitted prior to the second phase units.

11. The system of claim 1 wherein no phase units of the second set are transmitted until all of the phase units in the first set present in the partition transmission buffers have been transmitted.

12. The system of claim 10 wherein the prioritization of the first set of phase units by the first module is matched with a prioritized signal power allocated by the phased array beam forming antenna.

13. The system of claim 1 wherein the post processing module interpolates missing pixels in the second set of phase units using data from the first set of phase units.

14. The system of claim 1 wherein the post processing module interpolates missing pixels in the second set of phase units by averaging a diagonal of pixels ill the second set of phase units surrounding each missing pixel.

15. The system of claim 1 wherein the transmitter further comprises:

a processor coupled to the first module;

a baseband signal processor coupled to the processor and the phased array beam forming antenna; and

a wireless communication channel interface coupled to the processor.

16. The system of claim 15 further comprising:

a media receiver; and

a media receiver interface coupled between the media receiver and the first module.

17. The system of claim 15 wherein the receiver further comprises:

a processor coupled to the post processing module;

a baseband signal processor coupled to the processor and the phased array beam forming antenna; and

a phased array beam forming antenna coupled to the baseband signal processor.

18. A transmitter comprising:

a phased-array antenna to wirelessly transmit media data using beamforming, and

a first module coupled to the phased-array antenna to packetize phase units of media data and to determine a prioritized transmission order to transmit the packetized phase units using the phased-array antenna.

19. The transmitter defined in claim 18 wherein the first module drops media packets having a lower priority than the media packets being transmitted with the phased-array antenna.

20. The transmitter defined in claim 18 wherein the first module calculates a weight for each packetized phase unit at an output of each of a plurality of queues and selects one packetized phase unit to transmit from one of the plurality of queues based on the weight.

21. The transmitter defined in claim 18 wherein the first module selects one packetized phase unit to transmit from a group of packetized phase units at a head of each of a plurality of queues to transmit based on at least one parameter from a set of parameters.

22. The transmitter defined in claim 21 wherein the set of parameters includes one or more of a group consisting of:

phase priority, delay, play deadline for a phase, queue length, and current channel condition.

23. The transmitter defined in claim 18 further comprising a MAC and a physical layer, the MAC to control the selection of packetized phase units and cause the PHY to initiate the transmission of the video data.

24. The transmitter defined in claim 18 further comprising a unit to keep track of which phase units have been sent to the receiver for each area of the screen.