Using synchronization frames for mesh networking with piconets

• US 9,398,550 B2
• Filed: 10/29/2012
• Issued: 07/19/2016
• Est. Priority Date: 11/11/2008
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Bracha, Vered Bar
• Primary Examiner(s): Zaidi, Iqbal
• Application Number:
  US13/662,817
• Publication Number:
  US 20130051381A1
• Time in Patent Office: 1,359 Days
• Field of Search: 370208-339, 455/550
• US Class Current: 1/1
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 56/00 Synchronisation arrangements
• CPC Class Codes: H04W 72/1215 for collaboration of different radio technologies
• CPC Class Codes: H04W 72/541 using the level of interference
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

Certain aspects provide a technique for managing transmissions in a wireless network. The technique generally provides for an access terminal to transmit synchronization packets containing timing information regarding an existing piconet. The synchronization packets may contain an indication of resources of the piconet allocated to the access terminal by an access point.

Claims

1. A method of wireless communication performed by an apparatus, comprising:

performing ranging operations for a destination node that is to receive wirelessly distributed video to determine proximity between a wireless video source and the destination node; and

adjusting at least one of a bandwidth or resolution of the wirelessly distributed video based on the determined proximity,

wherein the ranging operations include the steps of;

receiving, from the destination node, a synchronization packet containing a time stamp indicating a transmission time of the synchronization packet; and

calculating a result based on a difference between a time when the synchronization packet was received and a time indicated by the time stamp.

2. The method of claim 1, wherein the adjusting comprises:

increasing the resolution of the wirelessly distributed video if the results of the ranging operations indicate the wireless video source and the destination node are in relatively close proximity to each other.

3. The method of claim 1, wherein the adjusting comprises:

decreasing the resolution of the wirelessly distributed video if the results of the ranging operations indicate the wireless video source and the destination node are not in relatively close proximity to each other.

4. An apparatus for wireless communication, comprising:

ranging logic configured to perform ranging operations for a destination node that is to receive wirelessly distributed video to determine proximity between a wireless video source and the destination node; and

adjusting logic configured to adjust at least one of a bandwidth or resolution of the wirelessly distributed video based on the determined proximity,

wherein the ranging logic receives, from the destination node, a synchronization packet containing a time stamp indicating a transmission time of the synchronization packet, and calculates a result based on a difference between a time when the synchronization packet was received and a time indicated by the time stamp.

5. The apparatus of claim 4, wherein the adjusting logic is configured to:

increase the resolution of the wirelessly distributed video if the results of the ranging operations indicate the wireless video source and the destination node are in relatively close proximity to each other.

6. The apparatus of claim 4, wherein the adjusting logic is configured to:

decrease the resolution of the wirelessly distributed video if the results of the ranging operations indicate the wireless video source and the destination node are not in relatively close proximity to each other.

7. An apparatus for wireless communication, comprising:

means for performing ranging operations for a destination node that is to receive wirelessly distributed video to determine proximity between a wireless video source and the destination node; and

means for adjusting at least one of a bandwidth or resolution of the wirelessly distributed video based on the determined proximity,

wherein the means for performing ranging operations is configured to;

receive, from the destination node, a synchronization packet containing a time stamp indicating a transmission time of the synchronization packet; and

calculate a result based on a difference between a time when the synchronization packet was received and a time indicated by the time stamp.

8. The apparatus of claim 7, wherein the means for performing ranging operations is configured to:

increase the resolution of the wirelessly distributed video if the results of the ranging operations indicate the wireless video source and the destination node are in relatively close proximity to each other.

9. The apparatus of claim 7, wherein the means for adjusting is configured to:

decrease the resolution of the wirelessly distributed video if the results of the ranging operations indicate the wireless video source and the destination node are not in relatively close proximity to each other.

10. A wireless video source, comprising:

at least one antenna;

ranging logic configured to perform ranging operations, based on packets received via the at least one antenna, for a destination node that is to receive wirelessly distributed video to determine proximity between the wireless video source and the destination node; and

adjusting logic configured to adjust at least one of a bandwidth or resolution of the wirelessly distributed video based on the determined proximity,

wherein the means for performing ranging operations is configured to;

receive, from the destination node, a synchronization packet containing a time stamp indicating a transmission time of the synchronization packet; and

calculate a result based on a difference between a time when the synchronization packet was received and a time indicated by the time stamp.

11. A computer-program product for wireless communications, comprising a non-transitory computer-readable medium comprising instructions executable to:

perform ranging operations for a destination node that is to receive wirelessly distributed video to determine proximity between a wireless video source and the destination node; and

adjust at least one of a bandwidth or resolution of the wirelessly distributed video based on the determined proximity, and

wherein the ranging operations further include instructions to;

receive, from the destination node, a synchronization packet containing a time stamp indicating a transmission time of the synchronization packet; and

calculate a result based on a difference between a time when the synchronization packet was received and a time indicated by the time stamp.