APPARATUS FOR CONTROLLING TRANSMISSION DATA AND METHOD THEREOF

• US 20110136523A1
• Filed: 09/11/2009
• Published: 06/09/2011
• Est. Priority Date: 09/22/2008
• 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 8,738,068 B2
• Time in Patent Office: Days
• US Class Current: 455/501
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04W 52/20 using error rate
• CPC Class Codes: H04W 52/241 taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo

Abstract

A method for controlling data transmission in a station in a wireless communication network, the method including: receiving feedback information including error information including a signal to noise ratio (SNR) from a target station, the error information being measured by the target station; and controlling transmission parameters of the transmit data in a transmitting station based on the error information, wherein controlling the transmission parameters includes: increasing the transmit power when the SNR is lower than a predetermined value; initiating a beam-tracking process when the SNR is still lower than the predetermined value after increasing the transmit power; and decreasing a data transmission rate when the SNR is still lower than the predetermined value after initiating the beam-tracking process.

Claims

1. A method for controlling data transmission in a station in a wireless communication network, the method comprising:

receiving feedback information including error information from a target station, the error information being measured by the target station; and

controlling transmission parameters of the transmit data in a transmitting station based on the error information.

2. The method of claim 1, wherein the error information includes a signal to noise ratio (SNR).

3. The method of claim 2, wherein the controlling step includes increasing the transmit power when the SNR is lower than a predetermined value.

4. The method of claim 3, further comprising:

initiating a beam-tracking process when the SNR is still lower than the predetermined value after increasing the transmit power.

5. The method of claim 4, further comprising:

decreasing a data transmission rate when the SNR is still lower than the predetermined value after initiating the beam-tracking process.

6. The method of claim 1, wherein the error information includes a packet error rate (PER).

7. A method for controlling data transmission in a station in a wireless communication network, the method comprising:

transmitting a request command to a target station, the request command requesting a transmit power control report;

receiving a response command from the target station, the response command including a request to adjust the transmit power; and

controlling the transmit power based on the response command.

8. The method of claim 7, wherein the controlling step includes increasing or decreasing the transmit power.

9. A method for controlling data transmission in a station in a wireless communication network, the method comprising:

determining whether a data collision or a data transmission error is the cause of a failure in data communication from the station, when data transmitted from the station is not received at another station;

performing a beam tracking process when the data collision is determined; and

controlling a transmit power of the station when the data transmission error is determined.

10. The method of claim 9, wherein the data is a packetized data, and the packetized data includes at least one packet with a PHY header and a MAC header, and wherein the data collision is determined by checking the PHY header, and the data transmission error is determined by checking the MAC header.

11. The method of claim 10, wherein the checking the PHY header includes reading the PHY header, and the checking the MAC header includes reading the MAC header.

12. An apparatus for controlling data transmission in a wireless station, the apparatus comprising:

a communication module configured to receive data from an external station, and configured to transmit data to the external station; and

a controller configured to control the communication module to receive feedback information including error information from the external station, the error information being measured by the external station, and configured to control the transmit data based on the error information.

13. The apparatus of claim 12, wherein the error information includes a Signal to Noise Ratio (SNR).

14. The apparatus of claim 13, wherein the controller is configured to increase the transmit power when the SNR is lower than a predetermined value.

15. The apparatus of claim 14, wherein the controller is configured to perform a beam-tracking process when the SNR is still lower than the predetermined value after increasing the transmit power.

16. The apparatus of claim 15, wherein the controller is configured to decrease a transmission data rate of data when the SNR is still lower than the predetermined value after performing the beam-tracking process.

17. The apparatus of claim 12, wherein the error information includes a packet error rate (PER).

18. An apparatus for controlling data transmission in a wireless station, the apparatus comprising:

a communication module configured to receive data from an external station, and configured to transmit data to an external station; and

a controller configured to control the communication module by transmitting a request command to the external station, the request command requesting a transmit power control report from the external stations, wherein the controller is configured to control the communication module to receive the transmit power control report from the external station, wherein the transmit power control report includes a request to adjust the transmit power, and wherein the controller is configured to control the transmit power based on the transmit power control report.

19. The apparatus of claim 18, wherein the controller is configured to increase or decrease the transmit power.

20. An apparatus for controlling data transmission in a wireless station, the apparatus comprising:

a communication module configured to receive data from an external station, and configured to transmit data to an external station; and

a controller configured to determine whether a data collision or a data transmission error is the cause of a failure in data communication from the station, when data transmitted from the station is not received at another station, and the controller is configured to perform a beam tracking process when the data collision is determined, and the controller is configured to control a transmit power of the station when the data transmission error is determined.

21. The apparatus of claim 20, wherein the data is a packetized data, and the packetized data includes at least one packet with a PHY header and a MAC header, and

wherein the data collision is determined by checking the PHY header, and the data transmission error is determined by checking the MAC header.

22. The apparatus of claim 21, wherein the checking the PHY header includes reading the PHY header, and the checking the MAC header includes reading the MAC header.

23. A method for controlling data transmission in a station in a wireless communication network, the method comprising:

receiving feedback information including error information including a signal to noise ratio (SNR) from a target station, the error information being measured by the target station; and

controlling transmission parameters of the transmit data in a transmitting station based on the error information, wherein controlling the transmission parameters includes;

increasing the transmit power when the SNR is lower than a predetermined value;

initiating a beam-tracking process when the SNR is still lower than the predetermined value after increasing the transmit power; and

decreasing a data transmission rate when the SNR is still lower than the predetermined value after initiating the beam-tracking process.