METHOD OF EXCHANGING MESSAGE AND DEVICES IN WIRELESS NETWORK

• US 20100246514A1
• Filed: 02/24/2010
• Published: 09/30/2010
• Est. Priority Date: 02/25/2009
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Joong Heon, JEON, Beom Jin
• Granted Patent: US 8,565,200 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

A method of exchanging messages at a device in a wireless network comprises transmitting a change request message for requesting a change of a beacon position among configuration parameters of the wireless network to a coordinator; and receiving a response message in response to the request message from the coordinator.

Claims

1. A method of exchanging messages at a device in a wireless network, the method comprising:

transmitting a change request message for requesting a change of a beacon position among configuration parameters of the wireless network to a coordinator; and

receiving a response message from the coordinator in response to the request message.

2. The method of claim 1, wherein the request message comprises a command ID field comprising a unique number that identifies the request message, a length field indicating a length of the request message and a beacon position change field indicating a offset from a original beacon position to a requested new beacon position.

3. The method of claim 1, wherein the response message comprises a command ID field comprising a unique number that identifies the response message, a length field indicating a length of the response message and a reason code field comprising a reason code.

4. The method of claim 3, wherein if the reason code field comprises the reason code of “

SUCCESS”

, further comprising receiving a plurality of beacons from the coordinator, each of the plurality of beacons comprises a parameter change information element (IE) including a changed beacon position.

5. The method of claim 4, wherein the parameter change IE comprises a IE index field comprising a unique number that identifies the parameter change IE, a change type field indicating a type of the parameter to be changed, a change beacon number field comprising a beacon number of a superfame when the change of the parameter takes effect and a network parameter field comprising information about a changed value of the parameter.

6. The method of claim 5, wherein the information about the changed value of the parameter is an offset between expected beacon transmission time and time when a beacon will be transmitted after the change of the beacon position.

7. The method of claim 5, wherein a last beacon among the plurality of beacons is broadcasted by the coordinator right before a beacon corresponding to the beacon number is broadcasted.

8. The method of claim 4, further comprising receiving a beacon to which the changed beacon position is applied, from the coordinator.

9. The method of claim 3, wherein if the change of the beacon position is not possible, the reason code field comprises a reason for failure.

10. The method of claim 9, wherein the reason for failure is any one of “

Unsupported Feature”

, “

Already synchronized with higher priority stream”

, “

Network shutdown in progress”

, “

Channel change in progress”

, “

Coordinator handover in progress” and

“

Other failure”

.

11. The method of claim 1, wherein each of the change request message and the response message is included in a media access control (MAC) packet.

12. A device of a wireless network comprising:

a transmitting module;

a receiving module; and

a network control module generating a change request message for requesting a change of a beacon position among configuration parameters of the wireless network and transmitting the change request message to a coordinator through the transmitting module,

wherein the receiving module receives a response message from the coordinator in response to the request message.

13. The method of claim 12, wherein the response message comprises a command ID field comprising a unique number that identifies the response message, a length field indicating a length of the response message and a reason code field comprising a reason code.

14. The method of claim 13, wherein if the reason code field comprises the reason code of “

SUCCESS”

, the device receives a plurality of beacons through the receiving module from the coordinator, each of the plurality of beacons comprises a parameter change information element (IE) including a changed beacon position.

15. The method of claim 14, wherein the device receives a beacon to which the changed beacon position is applied, through the receiving module from the coordinator.