Legal claims defining the scope of protection, as filed with the USPTO.
1. A method of requesting a channel access in a wireless local area network, the method comprising: generating, by a transmitter, a 20 MHz Request To Send (RTS) frame, the 20 MHz RTS frame including requesting bandwidth information indicating a first bandwidth; duplicating, by the transmitter, the 20 MHz RTS frame one or more times to generate at least one duplicated 20 MHz RTS frame, each duplicated 20 MHz RTS frame including the requesting bandwidth information; transmitting, by the transmitter, the 20 MHz RTS frame over a 20 MHz requesting channel; transmitting, by the transmitter, the at least one duplicated 20 MHz RTS frame over the at least 20 MHz duplicated requesting channel, respectively; and receiving, by the transmitter, at least one 20 MHz Clear To Send (CTS) frame as a response to at least one of the 20 MHz RTS frame and the at least one duplicated 20 MHz RTS frame, each 20 MHz CTS frame including responding bandwidth information indicating a second bandwidth, wherein the first bandwidth is 20×(n+1) MHz to indicate an entire transmission bandwidth for the 20 MHz requesting channel and the at least one 20 MHz duplicated requesting channel, and wherein n is a positive number of the at least one duplicated 20 MHz RTS frame.
2. The method of claim 1 , wherein the at least one 20 MHz CTS frame is at least one among a 20 MHz CTS frame and zero or more duplicated 20 MHz CTS frame transmitted over the second bandwidth.
3. The method of claim 1 , wherein: the second bandwidth is 20×(m+1) MHz; and m is a number of zero or more duplicated 20 MHz CTS frame.
4. The method of claim 3 , wherein each of the 20 MHz CTS frame and the zero or more duplicated 20 MHz CTS frame is transmitted over a respective 20 MHz channel within the second bandwidth.
5. The method of claim 1 , wherein the second bandwidth is equal to or less than the first bandwidth.
6. The method of claim 5 , wherein, when the first bandwidth indicated by the first bandwidth information is 40 MHz, the second bandwidth indicated by the second bandwidth information is 20 or 40 MHz.
7. The method of claim 5 , wherein, when the first bandwidth indicated by the first bandwidth information is 80 MHz, the second bandwidth indicated by the second bandwidth information is 20 or 40 or 80 MHz.
8. The method of claim 5 , wherein, when the first bandwidth indicated by the first bandwidth information is 160 MHz, the second bandwidth indicated by the second bandwidth information is 20 or 40 or 80 or 160 MHz.
9. The method of claim 1 , wherein: each of the 20 MHz RTS frame and the at least one duplicated 20 MHz RTS frame is processed based on a first bit sequence; and the first bit sequence indicates a generating characteristic of the 20 MHz RTS frame and the at least one duplicated 20 MHz RTS frame.
10. The method of claim 9 , wherein two bits of the first bit sequence are used for the first bandwidth information.
11. The method of claim 9 , wherein: each of the at least one 20 MHz CTS frame is processed based on a second bit sequence; and the second bit sequence indicates a generating characteristic of the at least one 20 MHz CTS frame.
12. The method of claim 11 , wherein two bits of the second bit sequence are used for the second bandwidth information.
13. A device configured to request a channel access in a wireless local area network, comprising: a wireless interface unit; and a controller operatively connected to the wireless interface unit and configured to: generate a 20 MHz Request To Send (RTS) frame, the 20MHz RTS frame including requesting bandwidth information indicating a first bandwidth; duplicate the 20 MHz RTS frame one or more times to generate at least one duplicated 20 MHz RTS frame, each duplicated 20 MHz RTS frame including the requesting bandwidth information; transmit the 20 MHz RTS frame over a 20 MHz requesting channel; transmit the at least one duplicated 20 MHz RTS frame over the at least 20 MHz duplicated requesting channel respectively; and receive at least one 20 MHz Clear To Send (CTS) frame as a response to at least one of the 20 MHz RTS frame and the at least one duplicated 20 MHz RTS frame, each 20 MHz CTS frame including responding bandwidth information indicating a second bandwidth, wherein the first bandwidth is 20×(n+1) MHz to indicate an entire transmission bandwidth for the 20 MHz requesting channel and the at least one 20 MHz duplicated requesting channel, and wherein n is a positive number of the at least one duplicated 20 MHz RTS frame.
14. The device of claim 13 , wherein the at least one 20 MHz CTS frame is at least one among a 20 MHz CTS frame and zero or more duplicated 20 MHz CTS frame transmitted over the second bandwidth.
15. The device of claim 13 , wherein: the second bandwidth is 20×(m+1) MHz; and m is a number of zero or more duplicated 20 MHz CTS frame.
16. The device of claim 15 , wherein each of the 20 MHz CTS frame and the zero or more duplicated 20 MHz CTS frame is received in response to both of the 20 MHz RTS frame and the at least one duplicated 20 MHz RTS frame.
17. The device of claim 13 , wherein the second bandwidth is equal to or less than the first bandwidth.
18. The device of claim 17 , wherein, when the first bandwidth indicated by the first bandwidth information is 40 MHz, the second bandwidth indicated by the second bandwidth information is 20 or 40 MHz.
19. The device of claim 17 , wherein, when the first bandwidth indicated by the first bandwidth information is 80 MHz, the second bandwidth indicated by the second bandwidth information is 20 or 40 or 80 MHz.
20. The device of claim 17 , wherein, when the first bandwidth indicated by the first bandwidth information is 160 MHz, the second bandwidth indicated by the second bandwidth information is 20 or 40 or 80 or 160 MHz.
21. The device of claim 13 , wherein: each of the 20 MHz RTS frame and the at least one duplicated 20 MHz RTS frame is processed in basis of a first bit sequence; and the first bit sequence indicates a generating characteristic of the 20 MHz RTS frame and the at least one duplicated 20 MHz RTS frame.
22. The device of claim 21 , wherein two bits of the first bit sequence are used for the first bandwidth information.
23. The device of claim 21 , wherein: each of the at least one 20 MHz CTS frame is processed based on a second bit sequence; and the second bit sequence indicates a generating characteristic of the at least one 20 MHz CTS frame.
24. The device of claim 23 , wherein two bits of the second bit sequence are used for the second bandwidth information.
Unknown
February 23, 2016
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