Method and apparatus for peer-to-peer connection using wireless local area network (LAN) in mobile communication terminal

• US 8,848,677 B2
• Filed: 10/13/2010
• Issued: 09/30/2014
• Est. Priority Date: 10/13/2009
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Choi, Jong-Mu, Han, Jeong-Hoon
• Primary Examiner(s): LI, GUANG W
• Application Number:
  US12/903,532
• Publication Number:
  US 20110085529A1
• Time in Patent Office: 1,448 Days
• Field of Search: 370/338
• US Class Current: 370/338
• CPC Class Codes: H04L 67/1061 using node-based peer discovery mechanisms static access to replicated servers H04L67/1006; service discovery H04L67/51
• CPC Class Codes: H04W 76/14 Direct-mode setup
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

An apparatus and a method for Peer-to-Peer (P2P) connection using a wireless Local Area Network (LAN) in a mobile communication terminal are provided. The method includes detecting a P2P connection attempt of a new terminal not connected to P2P communication, during P2P communication with at least one terminal, determining whether the mobile communication terminal operates as a slave terminal or a group owner in the P2P connection, and when the mobile communication terminal operates as the slave terminal, transmitting a signal indicating that the P2P connection attempt of the new terminal is detected, to a terminal operating as the group owner in the P2P connection.

Claims

1. A method for Peer-to-Peer (P2P) connection using a wireless Local Area Network (LAN) in a mobile communication terminal, the method comprising:

detecting a P2P connection attempt of a new terminal not connected to P2P communication, during P2P communication with at least one terminal;

determining whether the mobile communication terminal operates as at least one of a slave terminal and a group owner in the P2P connection;

when the mobile communication terminal operates as the slave terminal, transmitting a signal indicating that the P2P connection attempt of the new terminal is detected, to a terminal operating as the group owner in the P2P connection, wherein the new terminal is not connectable in P2P communication with the terminal operating as the group owner;

receiving a group owner delegable signal from the terminal operating as the group owner in the P2P connection;

re-determining the group owner through a group owner re-negotiation procedure with at least one P2P-connected terminal and the new terminal; and

establishing a P2P network through a P2P connection procedure with the at least one P2P terminal and the new terminal,

wherein the group owner is re-determined as a terminal which receives signals of the at least one P2P terminal and the new terminal.

2. The method of claim 1, further comprising:

exchanging packets with terminals connected to the P2P communication through the P2P connection.

3. The method of claim 1, further comprising:

after informing of the detection of the P2P connection attempt of the new terminal, receiving a signal indicating that the P2P connection attempt of the new terminal is detected, from the terminal operating as the group owner in the P2P connection.

4. The method of claim 1, further comprising:

when the mobile communication terminal operates as the group owner, performing a P2P connection procedure with the new terminal.

5. The method of claim 4, further comprising:

when the mobile communication terminal operates as the group owner, determining whether a signal, indicating that the P2P connection attempt of the new terminal is detected, is received from another terminal operating as the slave terminal in the P2P connection;

when receiving the signal indicating that the P2P connection attempt of the new terminal is detected, examining whether an IDentifier (ID) of the new terminal included in the received signal is identical to an ID of the new terminal detected by the mobile communication terminal; and

when the ID of the new terminal included in the received signal and the ID of the new terminal detected by the mobile communication terminal are identical, transmitting a signal indicating that the new terminal is detected, to the slave terminal.

6. The method of claim 5, further comprising:

when the ID of the new terminal included in the received signal and the ID of the new terminal detected by the mobile communication terminal are not identical, transmitting a group owner delegable signal to the slave terminal.

7. An apparatus for Peer-to-Peer (P2P) connection using a wireless Local Area Network (LAN) in a mobile communication terminal, the apparatus comprising:

a controller for detecting a P2P connection attempt of a new terminal not connected to P2P communication, during P2P communication with at least one terminal, determining whether the mobile communication terminal operates as at least one of a slave terminal and a group owner in the P2P connection, re-determining the group owner through a group owner re-negotiation procedure with at least one P2P-connected terminal and the new terminal and establishing a P2P network through a P2P connection procedure with the at least one P2P terminal and the new terminal; and

a communication module for, when the mobile communication terminal operates as the slave terminal, transmitting a signal indicating that the P2P connection attempt of the new terminal is detected, to a terminal operating as the group owner in the P2P connection under control of the controller,

wherein the new terminal is not connectable in P2P communication with the terminal operating as the group owner,

wherein the group owner is re-determined as a terminal which receives signals of the at least one P2P terminal and the new terminal.

8. The apparatus of claim 7, wherein the controller exchanges packets with terminals connected to the P2P communication through the P2P connection.

9. The apparatus of claim 7, wherein the communication module receives a signal indicating that the P2P connection attempt of the new terminal is detected, from the terminal operating as the group owner in the P2P connection.

10. The apparatus of claim 7, wherein, when the mobile communication terminal operates as the group owner, the communication module performs a P2P connection procedure with the new terminal under the control of the controller.

11. The apparatus of claim 10, wherein, the controller, when the mobile communication terminal operates as the group owner, determines whether a signal, indicating that the P2P connection attempt of the new terminal is detected, is received from another terminal operating as the slave terminal in the P2P connection, and when receiving the signal indicating that the P2P connection attempt of the new terminal is detected, examines whether an IDentifier (ID) of the new terminal included in the received signal is identical to an ID of the new terminal detected by the mobile communication terminal, and

when the ID of the new terminal included in the received signal and the ID of the new terminal detected by the mobile communication terminal are identical, the communication module transmits a signal indicating that the new terminal is detected, to the slave terminal.

12. The apparatus of claim 11, wherein, when the ID of the new terminal included in the received signal and the ID of the new terminal detected by the mobile communication terminal are not identical, the communication module transmits a group owner delegable signal to the slave terminal.