System and method for multiple clients synchronization in wi-fi peer-to-peer group

Patent metadata

Field	Value
Publication number	US-2016135017-A1
Application number	US-201414537205-A
Country	US
Kind code	A1
Filing date	Nov 10, 2014
Priority date	Nov 10, 2014
Publication date	May 12, 2016
Grant date	—

Abstract

A method and a system of Wi-Fi P2P communication network which can synchronize a group owner and at least two group clients are disclosed. The system includes changing the attribute ID 19 of the P2P Attribute ID definitions of the Wi-Fi P2P Technical Specification to be P2P Active Session, and the types 9 and 10 of the P2P public action frame type to be Join Active Request and Join Active Response, respectively. The method includes having a second group client to send the P2P public action frame with Join Active Request to a group owner via a P2P active session already established by the group owner and a first group client to join the P2P active session. Thus, the group owner and the first and second group clients can synchronize with each other substantially at the same time by the P2P active session.

First claim

What is claimed is:

1 . A Wi-Fi Peer-to-Peer (P2P) communication system, comprising:
a group owner; and at least a first group client and a second group client; wherein the group owner communicates with the at least a first group client and a second group client via a P2P active session so that the group owner and the at least a first group client and a second group client can synchronize with each other.

2 . The Wi-Fi P2P communication system of claim 1 , wherein Attribute ID 19 of P2P Attribute ID definitions of General format of P2P attribute of P2P IF format is the P2P active session.

3 . The Wi-Fi P2P communication system of claim 2 , wherein a body field of the P2P active session includes active session id and session information.

4 . The Wi-Fi P2P communication system of claim 2 , wherein value 0X09 of OUI type of general format of P2P public action frame is Join Active Request, and value 0X0A of OUI type of general format of P2P public action frame is Join Active Response.

5 . The Wi-Fi P2P communication system of claim 3 , wherein value 0X09 of OUI type of general format of P2P public action frame is Join Active Request, and value 0X0A of OUI type of general format of P2P public action frame is Join Active Response.

6 . The Wi-Fi P2P communication system of claim 5 , wherein the group owner broadcasts the P2P active session in P2P IE format in a beacon frame thereof after the group owner initials the P2P active session with one of the at least a first group client and a second group client.

7 . The Wi-Fi P2P communication system of claim 6 , wherein the other one of the at least a first group client and a second group client decides to join the P2P active session after the group owner broadcasts the P2P active session in P2P IE format in a beacon frame thereof.

8 . The Wi-Fi P2P communication system of claim 7 , wherein the other one of the at least a first group client and a second group client sends P2P public action frame type having type 9 thereof designating Join Active Request to the group owner after the other one of the at least a first group client and a second group decides to join the P2P active session.

9 . The Wi-Fi P2P communication system of claim 8 , wherein the group owner sends P2P publication action frame type having type 10 thereof designating Join Active Response to the other one of the at least a first group client and a second group client after the group owner adds the other one of the at least a first group client and a second group client to the P2P active session.

10 . The Wi-Fi P2P communication system of claim 9 , wherein the group owner and the at least a first group client and a second group client synchronize with each other after the group owner sends P2P publication action frame type having type 10 thereof designating Join Active Response to the other one of the at least a first group client and a second group client.

11 . A method for wireless communication under Wi-Fi P2P group, comprising:
a group owner wirelessly connecting with a first group client; the group owner wirelessly connecting with at least a second group client; the group owner initialing a P2P active session with the first group client; the group owner broadcasting the P2P active session in P2P IE format in a beacon frame thereof; the at least a second group client deciding to join the P2P active session after receiving the broadcast; the at least a second group client sending a signal requesting to join the P2P active session to the group owner; the group owner sending a signal in response to the request to the at least a second group client, indicating that the group owner has added the at least a second group client into the P2P active session; and the group owner, the first group client and the at least second group client synchronizing with each other.

12 . The method of claim 11 , wherein at least one of Attribute IDs 19 - 220 of P2P Attribute ID definitions of General format of P2P attribute of P2P IE format of each of the group owner, the first group client and the at least a second group client represents the P2P active session.

13 . The method of claim 12 , where the at least one of Attribute IDs 19 - 220 is Attribute ID 19 .

14 . The method of claim 13 , wherein a body field of the P2P active session includes active session id and session information.

15 . The method of claim 12 , wherein at least two of types 9 - 255 of P2P public action frame type of OUI type of general format of P2P public action frame are Join Active Request and Join Active Response, respectively.

16 . The method of claim 15 , wherein the at least two of types 9 - 255 are type 9 and type 10 , respectively, and wherein type 9 designates Join Active Request and type 10 designates Join Active Response.

17 . The method of claim 16 , wherein signal sent by the at least a second group client for requesting to join the P2P active session to the group owner includes the Join Active Request designated by type 9 of the P2P public action frame type of OUI type of general format of P2P public action frame.

18 . The method of claim 17 , wherein the signal sent by the group owner in response to the request from the at least a second group client includes the Join Active Response designated by type 10 of the P2P public action frame type of OUI type of general format of P2P public action frame.

19 . The method of claim 18 , wherein the synchronization of the group owner, the first group client and the at least a second group owner includes that the group owner sinks data to the first group client and the at least a second group client simultaneously after the group owner receives the data from one of the first group client and the at least a second group client.

20 . The method of claim 19 , wherein the synchronization of the group owner, the first group client and the at least a second group owner includes that the group owner automatically sinks data to the first group client and the at least a second group client simultaneously.

Assignees

• Chiun Mai Comm Systems Inc

Inventors

• Wu Yu-Chi

Classifications

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W4/08 Primary

  User group management · CPC title

• H04W76/02

  Electricity · mapped topic

• H04W56/001

  Synchronization between nodes · CPC title

• H04L67/104

  Peer-to-peer [P2P] networks · CPC title