SYSTEM AND METHOD FOR WIRELESS COMMUNICATION OF UNCOMPRESSED VIDEO HAVING POWER SAVING CAPABILITY

• US 20080130540A1
• Filed: 10/05/2007
• Published: 06/05/2008
• Est. Priority Date: 12/04/2006
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Information Systems America Incorporated (Samsung Electronics Co. Ltd.)
• Inventors: Singh, Harkirat, Shao, Huai-Rong, Ngo, Chiu, Qin, Xiangping
• Granted Patent: US 7,995,507 B2
• Time in Patent Office: Days
• US Class Current: 370/311
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/0219 where the power saving management affects multiple terminals
• CPC Class Codes: H04W 74/04 Scheduled access hybrid access H04W74/02
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method of efficient scheduling for portable devices communicating with a coordinator over a network is disclosed. The method includes: listening for beacons broadcasted by a coordinator; assigning, by the coordinator, a single contiguous time block (CTB) for portable devices during a superframe defined by consecutive beacons; scheduling a single wake period of one of the portable devices, which overlaps inclusively with consecutive beacons and the single CTB; and minimizing duration of the single wake period of the portable device. The single CTB may be arranged next to one of the consecutive beacons. The method may further comprise assigning, by the coordinator, a single random access time block (RATB) for the one of the portable devices so as to overlap with the single wake period. The RATB may be arranged next to one of consecutive beacons. The CTB may be arranged next to the RATB. The CTB may be arranged next to one of the consecutive beacons.

Claims

1. A method of efficient scheduling for one or more portable devices communicating with a coordinator over a network, the method comprising:

listening for a series of scheduled beacons broadcasted by a coordinator;

assigning, by the coordinator, a single contiguous time block (CTB) for one or more portable devices during a superframe defined by first and second consecutive beacons;

scheduling a single wake period for one of the one or more portable devices, which overlaps inclusively with one of the first and second consecutive beacons and the single CTB; and

minimizing duration of the single wake period for the one of the one or more portable devices.

2. The method of claim 1, wherein the single CTB is arranged immediately next to one of the first and second consecutive beacons.

3. The method of claim 1, further comprising assigning, to the coordinator, a single random access time block (RATB) for the one of the one or more portable devices so as to overlap with the single wake period.

4. The method of claim 3, wherein the RATB is arranged immediately next to one of the first and second consecutive beacons.

5. The method of claim 4, wherein the single CTB is arranged immediately next to the RATB.

6. The method of claim 4, wherein the single CTB is arranged immediately next to the one of the first and second consecutive beacons.

7. A system for efficient scheduling for portable devices communicating with a coordinator over a network, the system comprising:

a coordinator configured to broadcast a series of scheduled wake beacons and to assign a single contiguous time block (CTB) and a random access time block (RATB) for a superframe defined by first and second consecutive beacons, and

a portable device configured to listen for the series of scheduled wake beacons from the coordinator, wake up during a wake period for the superframe, and communicate with the coordinator,

wherein the wake period of the portable device overlaps with one of the first and second consecutive beacons, the single CTB, and the RATB, and wherein duration of the single wake period of the portable device is minimized.

8. The system of claim 7, wherein the coordinator assigns a single random access time block (RATB) for the one of the plurality of portable devices so as to overlap with the single wake period, wherein the coordinator arranges the single CTB immediately next to one of the first and second consecutive beacons, and wherein the coordinator arranges the RATB immediately next to one of the first and second consecutive beacons.

9. The system of claim 8, wherein the coordinator arranges the single CTB immediately next to the RATB.

10. The system of claim 8, wherein the coordinator arranges the single CTB immediately next to the one of the first and second consecutive beacons.

11. A system for efficient scheduling for one or more portable devices communicating with a coordinator over a network, the system comprising:

means for listening for a series of scheduled beacons broadcasted by a coordinator;

means for assigning, by the coordinator, a single contiguous time block (CTB) for one or more portable devices during a superframe defined by first and second consecutive beacons;

means for scheduling a single wake period of one of the one or more portable devices, which overlaps inclusively with one of the first and second consecutive beacons and the single CTB; and

means for minimizing duration of the single wake period of the one of the one or more portable devices.

12. The system of claim 11, wherein the coordinator assigns a single random access time block (RATB) for the one of the one or more portable devices so as to overlap with the single wake period, wherein the single CTB is arranged immediately next to one of the first and second consecutive beacons, and wherein the RATB is arranged immediately next to one of the first and second consecutive beacons.

13. The system of claim 12, wherein the single CTB is arranged immediately next to the RATB.

14. The system of claim 12, wherein the single CTB is arranged immediately next to the one of the first and second consecutive beacons.

15. The system of claim 12, wherein the single CTB of the portable device is provided across two consecutive superframes.

16. The system of claim 11, wherein a duration of the continuous awake period is substantially longer than sum of durations of the RATB, the CTB, and one beacon.

17. A method of efficient scheduling for one or more portable devices communicating with a coordinator over a network, the method comprising:

assigning, by the coordinator, a single contiguous time block (CTB) for one or more portable devices during a superframe defined by first and second consecutive beacons, and

assigning next to the CTB, by the coordinator, a single random access time block (RATB) for the one of the one or more portable devices,

wherein at least one of the single CTB and the single RATB is arranged immediately next to one of the first and second consecutive beacons.

18. A method of efficient scheduling for one or more portable devices communicating with a coordinator over a network, the method comprising:

listening for a series of scheduled beacons broadcasted by a coordinator;

scheduling a single wake period for one of one or more portable devices, which overlaps inclusively with one of the first and second consecutive beacons and a single contiguous time block (CTB); and

minimizing duration of the single wake period of the one of the one or more portable devices.

19. The method of claim 18, further comprising scheduling the single wake period of one of the one or more portable devices, which overlaps inclusively with a single random access time block (RATB) assigned for the one of the one or more portable devices so as to overlap with the single wake period.

20. The method of claim 19, wherein the single RATB is exclusively assigned for contention of the one or more portable device such that alternating current (AC) powered devices are prohibited from participating in the contention in the single RATB.