METHODS, WIRELESS COMMUNICATION STATIONS, AND SYSTEM FOR TIME SYNCHRONIZATION AND DISCOVERY

• US 20140269670A1
• Filed: 06/26/2013
• Published: 09/18/2014
• Est. Priority Date: 02/11/2013
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel IP Corporation (Intel Corporation)
• Inventors: Park, Minyoung, Qi, Emily H., Kaidar, Oren, Stephens, Adrian P
• Granted Patent: US 9,144,047 B2
• Time in Patent Office: Days
• US Class Current: 370/350
• CPC Class Codes: H04W 56/00 Synchronisation arrangements
• CPC Class Codes: H04W 56/001 Synchronization between nodes
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals
• CPC Class Codes: H04W 84/10 Small scale networks; Flat hierarchical networks

Abstract

Embodiments of a user station (STA) and methods for synchronizing with devices in a wireless communication network are generally described herein. In some embodiments, a STA receives a first beacon from a device in the first social network. The STA may synchronize to the first social network based on time synchronization information in the first beacon. The STA may transmit the time synchronization information of the first beacon to a second social network. A portion of a coverage area of the second social network may be outside a coverage area of the first social network.

Claims

1. A method, performed by a user station (STA), for operating in a first social network, the method comprising:

receiving a first beacon from a device in the first social network;

synchronizing to the first social network based on time synchronization information in the first beacon;

transmitting the time synchronization information of the first beacon to a second social network, a portion of a coverage area of the second social network being outside a coverage area of the first social network.

2. The method of claim 1, wherein transmitting the time synchronization information of the first beacon comprises:

detecting a second beacon transmitted from the second social network;

extracting discovery information from the second beacon to determine a discovery window of the second social network, the discovery information being included in the second beacon as an information element (IE); and

transmitting the time synchronization information of the first beacon during the discovery window of the second social network.

3. The method of claim 2, further comprising:

discovering devices of the second social network using the discovery information included in the IE extracted from the second beacon; and

communicating with discovered devices of the second social network.

4. The method of claim 2, further comprising:

synchronizing to the second social network, using time synchronization information extracted from the second beacon, responsive to determining that channel conditions in the first social network have deteriorated below a threshold.

5. The method of claim 2, further comprising:

transmitting the time synchronization information of the second beacon to devices in the first social network.

6. The method of claim 1, wherein communications in the first social network occur over a Wi-Fi Peer-to-Peer (P2P) social channel.

7. The method of claim 1, wherein the time synchronization information of the first beacon includes time stamp information for a synchronization point of the first social network.

8. The method of claim 7, wherein the first beacon includes an information element (IE) containing discovery information for the first social network.

9. The method of claim 8, wherein the discovery information includes a discovery window of the first social network, services of the first social network, or an identifier for a device in the first social network.

10. A wireless communication station (STA) comprising:

physical layer (PHY) circuitry to receive a first beacon transmitted on a social channel by a device in a first social network; and

one or more processors to

synchronize to the first social network based on time synchronization information in the first beacon, and

extract, from the first beacon,

time stamp information for a synchronization point of the first social network, and

an information element (IE) with discovery information of

the first social network; and

a medium access control (MAC) layer to configure the first beacon for transmission to a second social network such that the first beacon includes at least the time synchronization information in the first beacon, a portion of a coverage area of the second social network being outside a coverage area of the first social network.

11. The STA of claim 10, wherein

the one or more processors are further arranged to

extract discovery information from a second beacon transmitted from the second social network, to determine a discovery window of the second social network, the discovery information being included in the second beacon as an information element (IE),

discover devices of the second social network using the discovery information included in the IE extracted from the second beacon, and

communicate with discovered devices of the second social network;

and

the MAC layer is further arranged to configure the first beacon for transmission during the discovery window of the second social network.

12. The STA of claim 11, wherein the one or more processors are further arranged to:

synchronize to the second social network, using the time synchronization information of the second beacon, responsive to determining that channel conditions in the first social network have deteriorated below a threshold.

13. The STA of claim 11, wherein the MAC is further arranged to:

configure the time synchronization information of the second beacon for transmission to devices in the first social network.

14. The STA of claim 10, wherein the social channel is a Wi-Fi Peer-to-Peer (P2P) channel.

15. A system comprising:

an antenna arranged to receive a first beacon transmitted on a social channel in a first social network;

a memory to store

a list of social channels, the social channels being Wi-Fi Peer-to-Peer (P2P) channels, and

information extracted from the first beacon; and

a processor arranged to

synchronize to the first social network based on time synchronization information in the first beacon,

extract information from the first beacon, the information including time stamp information for a synchronization point for the first social network and discovery information for the first social network, the discovery information being included in the first beacon as an information element (IE), and

configure a message, including information extracted from the first beacon, for transmission to a second social network, a portion of a coverage area of the second social network being outside a coverage area of the first social network.

16. The system of claim 15, wherein the processor is further arranged to

extract discovery information from a second beacon, transmitted from the second social network, to determine a discovery window of the second social network, the discovery information being included in the second beacon as an IE,

transmit time synchronization information of the first beacon during the discovery window of the second social network,

discover devices of the second social network using the discovery information extracted from the second beacon, and

communicate with discovered devices of the second social network.

17. A non-transitory computer-readable medium comprising instructions that, when executed on a user station (STA) cause the STA to:

receive a first beacon, over a Wi-Fi Peer-to-Peer (P2P) social channel, from a device in a first social network;

synchronize to the first social network based on time synchronization information in the first beacon; and

transmit the time synchronization information of the first beacon to a second social network, a portion of a coverage area of the second social network being outside a coverage area of the first social network.

18. The computer-readable medium of claim 17, wherein the instructions further cause the STA to:

detect a second beacon transmitted from the second social network;

extract discovery information from the second beacon to determine a discovery window of the second social network, the discovery information being included in the second beacon as an information element (IE);

transmit the time synchronization information of the first beacon during the discovery window of the second social network; and

transmit time synchronization information of the second beacon to devices in the first social network.

19. The computer-readable medium of claim 18, wherein the instructions further cause the STA to:

synchronize to the second social network, using the time synchronization information of the second beacon, responsive to determining that channel conditions in the first social network have deteriorated below a threshold.

20. The computer-readable medium of claim 18, wherein the instructions further cause the STA to:

discover devices of the second social network using the discovery information extracted from the second beacon; and

communicate with discovered devices of the second social network.