High efficiency signal field in high efficiency wireless local area network

• US 10,057,924 B2
• Filed: 12/24/2015
• Issued: 08/21/2018
• Est. Priority Date: 05/27/2015
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel IP Corporation (Intel Corporation)
• Inventors: Li, Qinghua, Chen, Xiaogang, Zhu, Yuan, Niu, Huaning, Yin, Hujun
• Primary Examiner(s): Thier, Michael
• Assistant Examiner(s): Nowlin, Eric
• Application Number:
  US14/998,291
• Publication Number:
  US 20160353322A1
• Time in Patent Office: 971 Days
• CPC Class Codes: H04L 27/2613 Structure of the reference signals
• CPC Class Codes: H04L 5/00 Arrangements affording multiple use of the transmission path
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 74/004 in the uplink, i.e. towards network
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

This disclosure describes methods, apparatus, and systems related to a high efficiency SIGNAL field in high efficiency wireless LAN access network. A device may determine at least one communication channel with one or more devices including a first device and a second device. The device may generate a high efficiency preamble in accordance with a high efficiency communication standard, the high efficiency preamble including, at least in part, a first high efficiency SIGNAL field and a second high efficiency SIGNAL field. The device may partition the second high efficiency SIGNAL fields into, at least in part, a common subfield, and one or more device specific subfields. The device may send the high efficiency preamble to at least one of the one or more devices.

Claims

1. A device, comprising:

at least one memory that stores computer-executable instructions; and

at least one processor configured to access the at least one memory, wherein the at least one processor of the one or more processors is configured to execute the computer-executable instructions to;

determine at least one communication channel with one or more station devices including a first station device and a second station device;

generate a high efficiency preamble in accordance with a high efficiency communication standard, the high efficiency preamble including, at least in part, a first high efficiency SIGNAL field and a second high efficiency SIGNAL field;

partition the second high efficiency SIGNAL field into a common subfield and one or more device specific subfields, wherein the common subfield includes one or more of a resource allocation, a spatial stream allocation, or a number of legacy training fields (LTF);

determine to allocate a predetermined number of streams in the high efficiency preamble to indicate, to the one or more station devices, one or more resource units that are not allocated; and

cause to send the high efficiency preamble to at least one of the one or more station devices.

2. The device of claim 1, wherein the common subfield is common to the first station device and the second station device.

3. The device of claim 1, wherein the high efficiency communication standard is an Institute of Electrical and Electronics Engineers (IEEE) 802.11 ax communication standard.

4. The device of claim 1, wherein at least one of the one or more device specific subfields includes at least one of station identifier (STAID), a modulation and coding scheme (MCS), a transmit beamforming indication (TxBF), and a frame extension parameter associated with the first station device.

5. The device of claim 1, wherein the first high efficiency SIGNAL field includes a high efficiency SIGNAL A (HE-SIG-A) field.

6. The device of claim 1, wherein the second high efficiency SIGNAL field includes a high efficiency SIGNAL B (HE-SIG-B) field.

7. The device of claim 1, further comprising a transceiver configured to transmit and receive wireless signals.

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

9. A non-transitory computer-readable medium storing computer-executable instructions which, when executed by a processor, cause the processor to perform operations comprising:

determining a first communication channel associated with an access point;

identifying a high efficiency preamble in accordance with a high efficiency communication standard, the high efficiency preamble including, at least in part, a first high efficiency SIGNAL field and a second high efficiency SIGNAL field;

decoding the first high efficiency SIGNAL field;

determining a common subfield and one or more device specific subfields included in the second high efficiency SIGNAL field, wherein the common subfield includes one or more of a resource allocation, a spatial stream allocation, or a number of legacy training fields (LTF);

identifying a predetermined number of streams in the high efficiency preamble indicating one or more resource units that are not allocated; and

determining an indication of an availability of transmission subchannels associated with the first communication channel based on the first high efficiency SIGNAL field.

10. The non-transitory computer-readable medium of claim 9, wherein the computer-executable instructions cause the processor to further perform operations comprising:

determining a length of one of the one or more device specific subfields based on decoding the first high efficiency SIGNAL field.

11. The non-transitory computer-readable medium of claim 9, wherein the common subfield is common to one or more devices.

12. The non-transitory computer-readable medium of claim 9, wherein the one or more device specific subfields includes at least one of a station identifier (STAID), a modulation and coding schemes (MCS), a transmit beamforming indication (TxBF), and a frame extension parameter associated with a first station device.

13. The non-transitory computer-readable medium of claim 9, wherein the first high efficiency SIGNAL field includes a high efficiency SIGNAL A (HE-SIG-A) field.

14. The non-transitory computer-readable medium of claim 9, wherein the second high efficiency SIGNAL field includes a high efficiency SIGNAL B (HE-SIG-B) field.

15. The non-transitory computer-readable medium of claim 9, wherein the one or more device specific subfield may be encoded by a tail biting convolutional code or an ordinary convolutional code.

16. A method comprising:

determining at least one communication channel with one or more devices including a first device and a second device;

generating a high efficiency preamble in accordance with a high efficiency communication standard, the high efficiency preamble including, at least in part, a first high efficiency SIGNAL field and a second high efficiency SIGNAL field;

partitioning the second high efficiency SIGNAL field into a common subfield and one or more device specific subfields, wherein the common subfield includes one or more of a resource allocation, a spatial stream allocation, and a number of legacy training fields (LTF);

determining to allocate a predetermined number of streams in the high efficiency preamble to indicate, to the one or more devices, one or more resource units that are not allocated; and

causing to send the high efficiency preamble to at least one of the one or more devices.

17. The method of claim 16, wherein the common subfield is common to the first device and the second device.