APPARATUS AND METHOD FOR SYNCHRONIZING USB COMMUNICATION IN USB-WIRELESS LAN SYSTEM

• US 20110149819A1
• Filed: 12/10/2010
• Published: 06/23/2011
• Est. Priority Date: 12/21/2009
• Status: Abandoned Application

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: RHA, Haeyoung
• Application Number:
  US12/965,780
• Publication Number:
  US 20110149819A1
• Time in Patent Office: Days
• US Class Current: 370/311
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/0229 where the received signal is a wanted signal
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

An apparatus for synchronizing with a USB host by a mobile node having a USB device in a USB-wireless LAN system while reducing power consumption includes: a power mode controller configured to control the power mode of the mobile node; a USB device configured to receive data from the USB host and transmit an ACK or a NAK to the USB host based on the power mode; and a wireless LAN transmitter configured to transmit data received by the USB device according to wireless LAN specifications.

Claims

1. An apparatus for synchronizing with a USB host by a mobile node having a USB device in a USB-wireless LAN system while reducing power consumption, comprising:

a power mode controller configured to control the power mode of the mobile node;

a USB device configured to receive data from the USB host and transmit an ACK or a NAK to the USB host based on the power mode; and

a wireless LAN transmitter configured to transmit data received by the USB device according to wireless LAN specifications.

2. The apparatus of claim 1, further comprising a USB host configured to transmit data to the USB device and receive the ACK or the NAK as a response to the transmitted data.

3. The apparatus of claim 1, further comprising a base station configured to transmit/receive the data with the mobile node according to the wireless LAN specifications.

4. The apparatus of claim 1, wherein the ACK indicates that, when the mobile node is in an active mode, the data is successfully received.

5. The apparatus of claim 1, wherein the NAK indicates that, when the mobile node is in a doze mode, the data cannot be received.

6. A method for synchronizing with a USB host by a mobile node having a USB device in a USB-wireless LAN system while reducing power consumption, comprising:

receiving data to be transmitted through a wireless LAN from the USB host;

determining a mode condition of the mobile node; and

transmitting a NAK indicating that the data cannot be received to the USB host when the mode is a doze mode.

7. The method of claim 6, further comprising:

transmitting an ACK or a NAK according to the condition of the mobile node when the mode is an active mode.

8. The method of claim 6, wherein the ACK informs the USB host that the transmitted data has been successfully transmitted.

9. The method of claim 6, wherein the NAK informs the USB host that the transmitted data has not been successfully transmitted.

10. A method for synchronizing with a mobile node having a USB device by a USB host in a USB-wireless LAN system, comprising:

receiving information regarding the mode of the mobile node from the USB device;

determining the mode of the mobile node based on the information regarding the mode of the mobile node; and

buffering, by the USB host, data to be transmitted through the wireless LAN when the mode of the mobile node is a doze mode.

11. The method of claim 10, further comprising:

generating data to be transmitted through the wireless LAN, when the mode of the mobile node is an active mode, and transmitting the generated data to the USB device.

12. The method of claim 10, wherein, when the mode of the mobile node is changed, the USB host is informed of the mode change of the mobile node by the USB device.

13. The method of claim 10, wherein, when the doze mode of the mobile node is not changed, packets are buffered continuously.

14. The method of claim 11, wherein, when the active mode of the mobile node is not changed, packets are continuously generated and transmitted to the USB device.