Method of transmitting and receiving data in network environment with wired and wireless networks bridged using relay portal

• US 20060265480A1
• Filed: 05/18/2006
• Published: 11/23/2006
• Est. Priority Date: 05/18/2005
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Cho, Song-yean, Kim, Hyeong-seok, Kim, Min-soo, Kong, Ji-young
• Granted Patent: US 7,864,809 B2
• Time in Patent Office: Days
• US Class Current: 709/220
• CPC Class Codes: H04L 45/18 Loop-free operations
• CPC Class Codes: H04W 40/22 using selective relaying for reaching a BTS [Base Transceiver Station] or an access point

Abstract

A method of transmitting and receiving data in a network environment with a wired network and a wireless network bridged using a relay portal is provided. The method includes choosing one of a plurality of portals sharing a wired network and a wireless network as a relay portal, and transmitting a data packet to the wired network by setting an identifier of the relay portal as a prioritized receiver of the data packet.

Claims

1. A method of transmitting and receiving data in a network environment with a wired network and a wireless network bridged using a relay portal, the method comprising:

choosing one of a plurality of portals sharing the wired network and the wireless network, as the relay portal; and

transmitting a data packet to the wired network by setting a first identifier of the relay portal as a prioritized receiver of the data packet.

2. The method of claim 1, further comprising adding to the data packet a second identifier of a destination device which is to receive the data packet and the first identifier of the relay portal.

3. The method of claim 2, wherein the adding operation comprises, if two or more relay portals exist in the wireless network and one of the two or more relay portals can transmit data to the destination device, generating a data packet which sets the relay portal that can transmit data to the destination device as the prioritized receiver of the data packet.

4. The method of claim 1, wherein, if a destination device exists outside the wireless network, the data packet is transmitted through the relay portal to the wired network to which the relay portal is connected.

5. The method of claim 1, further comprising receiving from the wired network data transmitted to the wireless network, wherein the data is transmitted from the wired network to the wireless network through the relay portal.

6. The method of claim 1, wherein the data packet has a second identifier of a destination device as a primary destination address and has the identifier of the relay portal as a secondary destination address.

7. The method of claim 1, wherein the wireless network is based on an IEEE 802.11 standard.

8. A method of transmitting and receiving data in a network environment with a wired network and a wireless network bridged using a relay portal, the method comprising:

receiving a first packet for designating a relay portal;

generating an update packet having the address of a predetermined device, which transmits the first packet, as a source address;

transmitting the update packet using a broadcast method; and

receiving a second packet from the predetermined device which transmitted the first packet and transmitting the second packet to the wired network if a destination device of the second packet does not exist in the wireless network.

9. The method of claim 8, further comprising adding to the second packet an identifier of the destination device which is to receive the data packet and the identifier of the relay portal.

10. The method of claim 8, wherein the wireless network is based on an IEEE 802.11 standard.

11. A frame comprising:

an identifier of a receiving device which is to receive data;

an identifier of a sending device which transmits the data; and

an identifier of one of a plurality of portals in a wireless network to which the sending device is connected, the data prioritized such that the data is transmitted to the connected portal.

12. The frame of claim 11, further comprising a frame control field, wherein the frame control field comprises:

information indicating whether the sending device is connected to at least one of a first wireless network and a first wired network; and

information indicating whether the receiving device is connected to at least one of a second wireless network and a second wired network.

13. The frame of claim 11, wherein the frame is transmitted by a portal identified by a portal identifier if the frame is transmitted from the wireless network to a wired network.

14. A method of transmitting and receiving data of a wireless device connected to a wireless network, comprising:

receiving a data packet which indicates an existence of the wireless network;

analyzing the received data packet and connecting to the wireless network; and

registering first identifying information of the wireless device at a main portal which is connected to the wireless network and a wired network.

15. The method of claim 14, wherein the first identifying information comprises a media access control (MAC) address of the wireless device.

16. The method of claim 14, wherein if the wireless device is an access point, said method further comprises registering second identifying information of a secondary wireless device which exists in a basic service set (BSS) controlled by the access point, at the main portal.