Wireless communication method and wireless communication terminal for coexistence with legacy wireless communication terminal

• US 10,313,077 B2
• Filed: 12/26/2017
• Issued: 06/04/2019
• Est. Priority Date: 06/29/2015
• Status: Active Grant

• Current Assignee: Wilus Institute of Standards & Technology, Inc. (Good Day to Invent, Inc.)
• Original Assignee: Wilus Institute of Standards & Technology, Inc. (Good Day to Invent, Inc.), SK Telecom Co., Ltd.
• Inventors: Ko, Geonjung, Kwak, Jinsam, Son, Juhyung
• Primary Examiner(s): Haile, Feben
• Application Number:
  US15/854,662
• Publication Number:
  US 20180123757A1
• Time in Patent Office: 525 Days
• CPC Class Codes: H04L 1/0079 Formats for control data H04L1/16 takes precedence; training sequences H04L25/00 and H04L27/00
• CPC Class Codes: H04L 1/08 by repeating transmission, e.g. Verdan system H04L1/1858 and H04L1/189 take precedence
• CPC Class Codes: H04L 27/18 Phase-modulated carrier systems, i.e. using phase-shift keying H04L27/32 takes precedence
• CPC Class Codes: H04L 27/2602 Signal structure
• CPC Class Codes: H04L 27/26025 Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking allocating sub-channels of the transmission path H04L5/003
• CPC Class Codes: H04L 27/2603 Signal structure ensuring backward compatibility with legacy system
• CPC Class Codes: H04L 27/2613 Structure of the reference signals
• CPC Class Codes: H04L 27/26132 using repetition
• CPC Class Codes: H04L 27/26136 Pilot sequence conveying additional information
• CPC Class Codes: H04L 5/0046 Determination of how many bits are transmitted on different sub-channels
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0092 Indication of how the channel is divided
• CPC Class Codes: H04L 69/18 Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
• CPC Class Codes: H04L 69/323 in the physical layer [OSI layer 1]
• CPC Class Codes: H04W 80/045 involving different protocol versions, e.g. MIPv4 and MIPv6
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

A wireless communication terminal for wireless communication is disclosed. The wireless communication terminal includes: a transceiver; and a processor. The processor is configured to transmit a non-legacy physical layer frame including a legacy signaling field including information decodable by a legacy wireless communication terminal by using the transceiver.

Claims

1. A wireless communication terminal that communicates wirelessly, the terminal comprising:

a transceiver; and

a processor,

wherein the processor is configured to receive a non-legacy physical layer frame by using the transceiver,

obtain a legacy signaling field including information decodable by a legacy wireless communication terminal from the non-legacy physical layer frame,

obtain length information indicating information on a duration of the non-legacy physical layer frame, from the legacy signaling field,

obtain information other than information on the duration of the non-legacy physical layer frame through a remaining value obtained by dividing the length information by a data size transmittable by a symbol of a legacy physical layer frame, wherein the data size transmittable by a symbol of the legacy physical layer frame is 3 octets when a data rate of the legacy physical layer frame is 6 Mbps, and

determine the number of symbols of data of the non-legacy physical layer frame according to a following equation,

2. The wireless communication terminal of claim 1, wherein the processor is configured to obtain a duration of a packet extension which is a padding of the non-legacy physical layer frame, according to a following equation,

3. The wireless communication terminal of claim 1, wherein the increment of duration is a value obtained by multiplying a difference between a value obtained by performing a ceiling operation on a value obtained by dividing the duration of the non-legacy physical layer frame after the legacy signaling field by the duration of a symbol of the legacy physical layer frame and the value obtained by dividing the duration of the non-legacy physical layer frame after the legacy signaling field by the duration of a symbol of the legacy physical layer frame by the duration of a symbol of the legacy physical layer frame.

4. The wireless communication terminal of claim 1, wherein the processor is configured to determine a format of a non-legacy signaling field included in the non-legacy physical layer frame based on the length information.

5. The wireless communication terminal of claim 4, wherein the processor is configured to determine whether the non-legacy physical layer frame comprises a predetermined signaling field based on the length information.

6. The wireless communication terminal of claim 1, wherein the processor is configured to obtain the information other than the information on the duration of the non-legacy physical layer frame based on the remaining value and a modulation method of a third symbol after the legacy signaling field.

7. The wireless communication terminal of claim 6, wherein the modulation method is Binary Phase Shift Keying (BPSK) or Quadrature Binary Phase Shift Keying (QBPSK).

8. An operation method of a wireless communication terminal that communicates wirelessly, the method comprising:

receiving a non-legacy physical layer frame by using the transceiver,

obtaining a legacy signaling field including information decodable by a legacy wireless communication terminal from the non-legacy physical layer frame,

obtaining length information indicating information on a duration of the non-legacy physical layer frame after a legacy signaling field, from the legacy signaling field,

obtaining information other than the information on the duration of the non-legacy physical layer frame through a remaining value obtained by dividing the length information by a data size transmittable by a symbol of a legacy physical layer frame, wherein the data size transmittable by a symbol of the legacy physical layer frame is 3 octets when a data rate of the legacy physical layer frame is 6 Mbps, and

determining the number of symbols of the data of the non-legacy physical layer frame according to a following equation,

9. The method of claim 8, the method further comprises obtaining a duration of a packet extension which is a padding of the non-legacy physical layer frame, according to a following equation,

10. The method of claim 8, wherein the increment of duration is a value obtained by multiplying a difference between a value obtained by performing a ceiling operation on a value obtained by dividing the duration of the non-legacy physical layer frame after the legacy signaling field by the duration of a symbol of the legacy physical layer frame and the value obtained by dividing the duration of the non-legacy physical layer frame after the legacy signaling field by the duration of a symbol of the legacy physical layer frame by the duration of a symbol of the legacy physical layer frame.

11. The method of claim 8, the method further comprises

determining a format of a non-legacy signaling field included in the non-legacy physical layer frame based on the length information.

12. The method of claim 11, wherein determining the format of a non-legacy signaling field included in the non-legacy physical layer frame comprises

determining whether the non-legacy physical layer frame comprises a predetermined signaling field based on the length information.

13. The method of claim 8, wherein the obtaining the information other than the information on the duration of the non-legacy physical layer frame comprises

obtaining the information other than the information on the duration of the non-legacy physical layer frame based on the remaining value and a modulation method of a third symbol after the legacy signaling field.

14. The method of claim 13, wherein the modulation method is Binary Phase Shift Keying (BPSK) or Quadrature Binary Phase Shift Keying (QBPSK).