Method and apparatus for transmitting and receiving a measurement report frame in a wireless local area network system

• US 9,648,383 B2
• Filed: 11/29/2010
• Issued: 05/09/2017
• Est. Priority Date: 04/19/2010
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Eunsun, Seok, Yongho
• Primary Examiner(s): Chin, Ricky
• Application Number:
  US13/641,726
• Publication Number:
  US 20130205313A1
• Time in Patent Office: 2,353 Days
• Field of Search: None
• CPC Class Codes: H04N 21/24 Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth, upstream requests monitoring of server performance or load G06F11/34; arrangements for observation, testing or troubleshooting for broadcast or for distribution combined with broadcast H04H20/12
• CPC Class Codes: H04N 21/43637 involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11] arrangements for wireless networking or broadcasting of information in indoor or near-field type systems H04B10/114
• CPC Class Codes: H04N 21/4383 Accessing a communication channel
• CPC Class Codes: H04N 5/50 Tuning indicators; Automatic tuning control
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks

Abstract

A method of transmitting and receiving a measurement report frame in a wireless local area network (WLAN) is disclosed. A method of transmitting a measurement report frame form a first station to a second station in a regulatory domain where a licensed device and an unlicensed device are permitted to operate together in a wireless local area network (WLAN) comprising: receiving, at the first station, a measurement request frame from the second station; and transmitting, to the second station, the measurement report frame including a Primary Service Signal Map field indicating which TV channels are occupied by a primary service signal, wherein the primary service signal is a signal that requires protection by regulation.

Claims

1. A method of transmitting a measurement report frame from a first station to a second station in a regulatory domain in which a licensed device and an unlicensed device are permitted to operate together in a wireless local area network (WLAN), the method comprising:

receiving, at the first station, a measurement request frame, requesting to measure at least one channel in TVWS (TV White Space), from the second station;

detecting a primary service signal during a measurement duration based on the measurement request frame; and

transmitting, to the second station, the measurement report frame, reporting a measurement result of TV channels on which the at least one channel in TVWS is extended,

wherein the measurement report frame comprises a Primary Service Signal Map field, a primary service signal type field, and a measurement duration field indicating a measurement duration for which the first station performs detecting,

wherein the Primary Service Signal Map field comprises at least one TV channel number subfield indicating a channel number of a TV channel on which the primary service signal is detected,

wherein the primary service signal type field indicates a type of each detected primary service signal determined by a type of a device transmitting the primary service signal,

wherein a value of the primary service signal type field indicates whether the second station should lower a maximum transmit power when the second station transmits a signal to the first station using the adjacent channel of the TV channel on which the primary service signal is detected, and

wherein a TV channel indicated by the TV channel number subfield is a TV channel on which the primary service signal over a certain threshold energy level is detected for the measurement duration.

2. The method of claim 1, wherein the Primary Service Signal Map field further includes a number of TV channels subfield indicating the number of the TV channels on which the primary service signal is detected.

3. The method of claim 1, wherein the measurement report frame further includes a measurement start time field indicating a time at which the first station started to measure the primary service signal.

4. The method of claim 1, wherein the measurement report frame further includes an operating class field and a channel number field, which indicate a WLAN channel on which the first station performs sensing.

5. The method of claim 4, wherein the TV channels correspond to the WLAN channel.

6. The method of claim 1, wherein the measurement report frame further includes a Secondary Service Signal Map field indicating which TV channels are occupied by the unlicensed device.

7. A first station for transmitting a measurement report frame to a second station in a regulatory domain in which a licensed device and an unlicensed device are permitted to operate together in a wireless local area network (WLAN), the first station comprising:

a transceiver configured to transmit or receive a signal; and

a processor connected with the transceiver, the processor being configured to;

control the transceiver to receive a measurement request frame, requesting to measure at least one channel in TVWS (TV White Space), from the second station;

detect a primary service signal during a measurement duration based on the measurement request frame; and

control the transceiver to transmit, to the second station, the measurement report frame, reporting a measurement result of TV channels on which the at least one channel in TVWS is extended,

wherein the measurement report frame comprises a Primary Service Signal Map field, a primary service signal type field, and a measurement duration field indicating a measurement duration for which the first station performs detecting,

wherein the Primary Service Signal Map field comprises at least one TV channel number subfield indicating a channel number of a TV channel on which the primary service signal is detected,

wherein the primary service signal type field indicates a type of each detected primary service signal determined by a type of a device transmitting the primary service signal,

wherein a value of the primary service signal type field indicates whether the second station should lower a maximum transmit power when the second station transmits a signal to the first station using the adjacent channel of the TV channel on which the primary service signal is detected, and

wherein a TV channel indicated by the TV channel number subfield is a TV channel on which the primary service signal over a certain threshold energy level is detected for the measurement duration.

8. A method of receiving a measurement report frame at a first station from a second station in a regulatory domain in which a licensed device and an unlicensed device are permitted to operate together in a wireless local area network (WLAN), the method comprising:

transmitting, from the first station, a measurement request frame, requesting to measure at least one channel in TVWS (TV White Space), to the second station; and

receiving, from the second station, the measurement report frame, reporting a measurement result of TV channels on which the at least one channel in TVWS is extended,

wherein the measurement report frame comprises a Primary Service Signal Map field, a primary service signal type field, and a measurement duration field indicating a measurement duration for which the second station performs detecting,

wherein the Primary Service Signal Map field comprises at least one TV channel number subfield indicating a channel number of a TV channel on which the primary service signal is detected,

wherein the primary service signal type field indicates a type of each detected primary service signal determined by a type of a device transmitting the primary service signal,

wherein a value of the primary service signal type field indicates whether the first station should lower a maximum transmit power when the first station transmits a signal to the second station using the adjacent channel of the TV channel on which the primary service signal is detected, and

wherein a TV channel indicated by the TV channel number subfield is a TV channel on which the primary service signal over a certain threshold energy level is detected for the measurement duration.

9. The method of claim 8, wherein the Primary Service Signal Map field further includes a number of TV channels subfield indicating the number of the TV channels on which the primary service signal is detected.

10. The method of claim 8, wherein the measurement report frame further includes a measurement start time field indicating a time at which the second station started to measure the primary service signal.

11. The method of claim 8, wherein the measurement report frame further includes an operating class field and a channel number field, which indicate a WLAN channel the second station performs sensing on.

12. The method of claim 11, wherein the TV channels correspond to the WLAN channel.

13. The method of claim 8, wherein the measurement report frame further includes a Secondary Service Signal Map field indicating which TV channels are occupied by the unlicensed device.

14. A first station for receiving a measurement report frame from a second station in a regulatory domain in which a licensed device and an unlicensed device are permitted to operate together in a wireless local area network (WLAN), the apparatus comprising:

a transceiver configured to transmit or receive a signal; and

a processor connected with the transceiver, the processor being configured to;

control the transceiver to transmit a measurement request frame, requesting to measure at least one channel in TVWS (TV White Space), to the second station; and

control the transceiver to receive, from the second station, the measurement report frame, reporting a measurement result of TV channels on which the at least one channel in TVWS is extended,

wherein the measurement report frame comprises a Primary Service Signal Map field, a primary service signal type field, and a measurement duration field indicating a measurement duration for which the first station performs detecting,

wherein the Primary Service Signal Map field comprises at least one TV channel number subfield indicating a channel number of a TV channel on which the primary service signal is detected,

wherein the primary service signal type field indicates a type of each detected primary service signal determined by a type of a device transmitting the primary service signal,

wherein a value of the primary service signal type field indicates whether the first station should lower a maximum transmit power when the first station transmits a signal to the second station using the adjacent channel of the TV channel on which the primary service signal is detected, and

wherein a TV channel indicated by the TV channel number subfield is a TV channel on which the primary service signal over a certain threshold energy level is detected for the measurement duration.