Pre-high-efficiency (HE)-short training field preamble transmission for the HE-trigger based physical layer convergence protocol (PLCP) protocol data unit (PPDU)

• US 10,200,514 B2
• Filed: 12/21/2016
• Issued: 02/05/2019
• Est. Priority Date: 06/29/2016
• Status: Active Grant

• Current Assignee: SOLiD, Inc.
• Original Assignee: Intel IP Corporation (Intel Corporation)
• Inventors: Chen, Xiaogang, Cariou, Laurent, Li, Qinghua, Stacey, Robert J.
• Primary Examiner(s): Hsu, Alpus
• Application Number:
  US15/386,916
• Publication Number:
  US 20180007179A1
• Time in Patent Office: 776 Days
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers
• CPC Class Codes: H04L 69/323 in the physical layer [OSI layer 1]
• CPC Class Codes: H04L 69/324 in the data link layer [OSI layer 2], e.g. HDLC
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal
• CPC Class Codes: H04W 74/06 using polling
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

Embodiments of an access point (AP) may comprise memory and processing circuitry coupled to the memory, and transceiver circuitry coupled to the processing circuitry. The processing circuitry of the AP may be configured to generate a trigger frame to allocate a center 26 tone RU for an HE-trigger-based PPDU, the center 26 tone RU having an adjacent upper 20 MHz subchannel and an adjacent lower 20 MHz subchannel. In an embodiment, the center 26 tone RU is for a station (STA) and wherein the trigger frame indicates to the STA to transmit a pre-HE-STF preamble on one of the adjacent upper 20 MHz subchannel, the adjacent lower 20 MHz subchannel, or both the adjacent upper and lower 20 MHz subchannels, and configure the wireless device to transmit the trigger frame to the station.

Claims

1. An apparatus of a wireless device, the apparatus comprising memory;

and processing circuitry coupled to the memory, the processing circuitry configured to;

generate a trigger frame, the trigger frame comprising a resource unit (RU) to allocate a center 26 tone RU for an high-efficiency (HE) station (STA) to transmit an HE-trigger-based physical layer protocol data unit (PPDU), the center 26 tone RU having an adjacent upper 20 MHz subchannel and an adjacent lower 20 MHz subchannel,

wherein the trigger frame indicates to the HE STA to transmit a pre-HE-short training field (STF) preamble on both the adjacent upper and lower 20 MHz subchannels; and

configure the wireless device to transmit the trigger frame to the HE STA.

2. The apparatus of claim 1, wherein the processing circuitry is further configured to decode the pre-HE-STF preamble, received from the HE STA, on one of the adjacent upper 20 MHz subchannel, the adjacent lower 20 MHz subchannel, or both the adjacent upper and lower 20 MHz subchannels.

3. The apparatus of claim 1, wherein:

a w bandwidth of the wireless device is 80 MHz.

4. The apparatus of claim 1, wherein the HE-trigger-based PPDU is scheduled on the center 26 tone RU of 80 MHz bandwidth, or 80 MHz+80 MHz bandwidth or 160 MHz bandwidth.

5. The apparatus of claim 1, wherein the pre-HE-STF preamble includes a legacy preamble, a repeat legacy signal (SIG) field (RL-SIG) and HE-SIG-A.

6. The apparatus of claim 1, wherein the wireless device and the HE STA are configured to operate in accordance with one or more of the following group:

Institute of Electrical and Electronic Engineers (IEEE) 802.11ax and IEEE 802.11.

7. The apparatus of claim 1, further comprising transceiver circuitry coupled to the processing circuitry.

8. The apparatus of claim 7, further comprising one or more antennas coupled to the transceiver circuitry.

9. A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors of an apparatus of a wireless device, the instructions to configure the one or more processors to:

generate a trigger frame, the trigger frame comprising a resource unit (RU) to allocate a center 26 tone RU for an high-efficiency (HE) station (STA) to transmit an HE-trigger-based physical layer protocol data unit (PPDU), the center 26 tone RU having an adjacent upper 20 MHz subchannel and an adjacent lower 20 MHz subchannel,

wherein the trigger frame indicates to the HE STA to transmit a pre-HE-short training field (STF) preamble on both the adjacent upper and lower 20 MHz subchannels; and

configure the wireless device to transmit the trigger frame to the HE STA.

10. The non-transitory computer-readable storage medium according to claim 9, wherein:

the HE-trigger-based PPDU is scheduled on the center 26 tone RU of 80 MHz bandwidth, or 80 MHz+80 MHz bandwidth or 160 MHz bandwidth.

11. The non-transitory computer-readable storage medium according to claim 9, wherein:

a working bandwidth of the wireless device is 80 MHz.

12. The non-transitory computer-readable storage medium according to claim 9, wherein:

the pre-HE-STF preamble includes a legacy preamble, a repeat legacy signal (SIG) field (RL-SIG) and HE-SIG-A.

13. An apparatus of a high-efficiency (HE) station (STA), the apparatus comprising memory;

and processing circuitry coupled to the memory, the processing circuitry configured to;

decode a trigger frame, wherein the trigger frame comprises a resource unit (RU) for the HE STA, the RU indicating a center 26 tone RU for an HE-trigger-based physical layer protocol data unit (PPDU), the center 26 tone RU having an adjacent upper 20 MHz subchannel and an adjacent lower 20 MHz subchannel, wherein the trigger frame is received from an access point; and

configure the HE STA to transmit a pre-HE-short-training field (STF) preamble on both the adjacent upper and lower 20 MHz subchannels.

14. The apparatus of claim 13, wherein the HE STA is one of an Institute of Electrical and Electronic Engineering (IEEE) 802.11ax STA or 802.11 STA.

15. A method performed by an apparatus of a wireless device, the method comprising:

generating a trigger frame, the trigger frame comprising a resource unit (RU) to allocate a center 26 tone RU for an high-efficiency (HE) station (STA) to transmit an HE-trigger-based physical layer protocol data unit (PPDU), the center 26 tone RU having an adjacent upper 20 MHz subchannel and an adjacent lower 20 MHz subchannel,

wherein the trigger frame indicates to the HE STA to transmit a pre-HE-short training field (STF) preamble on both the adjacent upper and lower 20 MHz subchannels; and

configuring the wireless device to transmit the trigger frame to the HE STA.

16. The method of claim 15, wherein a working bandwidth of the wireless device is 80 MHz.

17. The method of claim 15, further comprising including in the pre-HE-STF preamble a legacy preamble, a repeat legacy signal (SIG) field (RL-SIG) and HE-SIG-A.

18. The method of claim 15, wherein the wireless device is an access point operable in a wireless local area network.

19. A method performed by a high-efficiency (HE) station (STA), the method comprising:

decoding a trigger frame, wherein the trigger frame comprises a resource unit (RU) for the HE STA, the RU indicating a center 26 tone RU for an high-efficiency (HE)-trigger-based physical layer protocol data unit (PPDU), the center 26 tone RU having an adjacent upper 20 MHz subchannel and an adjacent lower 20 MHz subchannel; and

configuring the HE STA to transmit a pre-HE-short-training field (STF), preamble on both the adjacent upper and lower 20 MHz subchannels.

20. The method of claim 19, further comprising using transceiver circuitry coupled to processing circuitry to transmit the HE-trigger-based PPDU.

21. The method of claim 19, wherein the HE STA is one of an Institute of Electrical and Electronic Engineering (IEEE) 802.11ax STA or 802.11 STA.

22. The method of claim 21, wherein the trigger frame is received from an access point (AP) operating in a wireless local area network (WLAN).