MULTI-MODE WIRELESS TRANSMISSION METHOD AND APPARATUS

• US 20150117428A1
• Filed: 10/27/2014
• Published: 04/30/2015
• Est. Priority Date: 10/28/2013
• Status: Abandoned Application

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: LEE, Il Gu, LEE, Hee Soo, LEE, Sok Kyu
• Application Number:
  US14/525,047
• Publication Number:
  US 20150117428A1
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: H04L 27/0008 arrangements for allowing a transmitter or receiver to use more than one type of modulation negotiating modulation type for two-way transmission paths H04L5/1453
• CPC Class Codes: H04L 27/206 using a pair of orthogonal carriers, e.g. quadrature carriers
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals

Abstract

Provided is a next-generation wireless local area network (WLAN) frame communication method. The communication method may include modulating a first symbol in a signal field A (SIG-A) of a next-generation WLAN frame using a first modulation method, modulating a second symbol in the SIG-A of the next-generation WLAN frame using a second modulation method, and modulating a short training field (STF) signal of the next-generation WLAN frame in response to a next-generation WLAN mode.

Claims

1. A next-generation wireless local area network (WLAN) frame communication method, the communication method comprising:

modulating a first symbol in a signal field A (SIG-A) of a next-generation WLAN frame using a first modulation method;

modulating a second symbol in the SIG-A of the next-generation WLAN frame using a second modulation method; and

modulating a short training field (STF) signal of the next-generation WLAN frame in response to a next-generation WLAN mode.

2. The communication method of claim 1, wherein the modulating of the first symbol comprises modulating the first symbol in the SIG-A of the next-generation WLAN frame using binary phase-shift keying (BPSK),

the modulating of the second symbol comprises modulating the second symbol in the SIG-A of the next-generation WLAN frame using quadrature BPSK (Q-BPSK), and

the modulating of the STF signal comprises modulating the STF signal of the next-generation WLAN frame to have a phase difference of 90 degrees (°

) from a very high throughput (VHT)-STF signal.

3. The communication method of claim 1, wherein the modulating of the first symbol comprises modulating the first symbol in the SIG-A of the next-generation WLAN frame using BPSK,

the modulating of the second symbol comprises modulating the second symbol in the SIG-A of the next-generation WLAN frame using the BPSK, and

the modulating of the STF signal comprises modulating the STF signal of the next-generation WLAN frame using Q-BPSK.

4. A next-generation wireless local area network (WLAN) frame communication method, the communication method comprising:

receiving a communication signal;

verifying a first symbol and a second symbol in a signal field A (SIG-A) of the communication signal, and a short training field (STF) signal of the communication signal; and

identifying a communication mode of a next-generation WLAN frame based on the STF signal.

5. The communication method of claim 4, wherein the verifying comprises verifying the STF signal of the communication signal when the first symbol is a binary phase shift keying (BPSK) signal and the second symbol is a quadrature BPSK (Q-BPSK) signal, and

the identifying comprises determining the communication mode to be a next-generation WLAN mode when the STF signal has a phase difference of 90°

from a very high throughput (VHT)-STF signal.

6. The communication method of claim 4, wherein the verifying comprises verifying the STF signal of the communication signal when the first symbol is a BPSK signal and the second symbol is a BPSK signal, and

the identifying comprises determining the communication mode to be a next-generation WLAN mode when the STF signal is a Q-BPSK signal.

7. A next-generation wireless local area network (WLAN) frame communication method, the communication method comprising:

modulating a first symbol in a signal field A (SIG-A) of a next-generation WLAN frame using a first modulation method;

modulating a second symbol in the SIG-A of the next-generation WLAN frame using a second modulation method; and

modulating a third symbol in the SIG-A of the next-generation WLAN frame in response to a next-generation WLAN mode.

8. The communication method of claim 7, wherein the modulating of the first symbol comprises modulating the first symbol in the SIG-A of the next-generation WLAN frame using binary phase shift keying (BPSK),

the modulating of the second symbol comprises modulating the second symbol in the SIG-A of the next-generation WLAN frame using quadrature BPSK (Q-BPSK), and

the modulating of the third symbol comprises modulating the third symbol in the SIG-A of the next-generation WLAN frame to have a phase difference of 90°

from a very high throughput (VHT)-STF signal.

9. The communication method of claim 7, wherein the modulating of the first symbol comprises modulating the first symbol in the SIG-A of the next-generation WLAN frame using BPSK,

the modulating of the second symbol comprises modulating the second symbol in the SIG-A of the next-generation WLAN frame using the BPSK, and

the modulating of the third symbol comprises modulating the third symbol in the SIG-A of the next-generation WLAN frame using Q-BPSK.

10. A next-generation wireless local area network (WLAN) frame communication method, the communication method comprising:

receiving a communication signal;

verifying a first symbol, a second symbol, and a third symbol in a signal field A (SIG-A) of the communication signal; and

identifying a communication mode of a next-generation WLAN frame based on the third symbol.

11. The communication method of claim 10, wherein the verifying comprises verifying the third symbol in the SIG-A when the first symbol is a binary phase shift keying (BPSK) signal and the second symbol is a quadrature BPSK (Q-BPSK) signal, and

the identifying comprises determining the communication mode to be a next-generation WLAN mode when the third symbol has a phase difference of 90°

from a very high throughput (VHT)-STF signal.

12. The communication method of claim 10, wherein the verifying comprises verifying the third symbol in the SIG-A when the first symbol is a BPSK signal and the second symbol in the SIG-A is a BPSK signal, and

the identifying comprises determining the communication mode to be a next-generation WLAN mode when the third symbol in the SIG-A is a Q-BPSK signal.

13. A next-generation wireless local area network (WLAN) frame communication method, the communication method comprising:

generating a signal field of a next-generation WLAN frame to have a length equal to a signal field of a very high throughput (VHT) frame; and

inputting, as a first value, a predetermined reserved bit among reserved bits in a structure of the signal field of the VHT frame.

14. The communication method of claim 13, further comprising:

modulating a first symbol in a signal field A (SIG-A) of the next-generation WLAN frame using binary phase-shift keying (BPSK); and

modulating a second symbol in the SIG-A of the next-generation WLAN frame using quadrature BPSK (Q-BPSK).

15. The communication method of claim 13, wherein the inputting comprises:

inputting, as the first value, the predetermined reserved bit in a next-generation WLAN mode; and

inputting, as a second value, the predetermined reserved bit in a VHT mode.

16. A next-generation wireless local area network (WLAN) frame communication method, the communication method comprising:

receiving a WLAN frame;

verifying a predetermined reserved bit among reserved bits in a structure of a signal field of a very high throughput (VHT) frame or a high throughput (HT) frame of the WLAN frame; and

identifying a communication mode of the WLAN frame based on the identified reserved bit.

17. The communication method of claim 16, wherein the identifying comprises:

determining the communication mode to be a next-generation WLAN mode when the identified reserved bit is a first value; and

determining the communication mode to be a VHT mode when the identified reserved bit is a second value.

18. A next-generation wireless local area network (WLAN) frame communication method, the communication method comprising:

generating a signal field of a next-generation WLAN frame to have a length equal to a signal field of a high throughput (HT) frame; and

inputting, as a first value, a reserved bit in a structure of the signal field of the HT frame in a next-generation WLAN mode.