Conveying information to bandwidth limited device

• US 9,883,473 B2
• Filed: 12/17/2015
• Issued: 01/30/2018
• Est. Priority Date: 10/19/2015
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel IP Corporation (Intel Corporation)
• Inventors: Azizi, Shahrnaz, Ghosh, Chittabrata, Kenney, Thomas J.
• Primary Examiner(s): SINKANTARAKORN, PAWARIS
• Application Number:
  US14/973,217
• Publication Number:
  US 20170111875A1
• Time in Patent Office: 775 Days
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• 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: H04W 56/001 Synchronization between nodes
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal

Abstract

Generally discussed herein are devices and methods for providing devices with packet duration and/or transmit and/or receive time frame information. An apparatus can include processing circuitry and transceiver circuitry configured to generate a packet for transmission on one or more sub-channels for one or more stations, each sub-channel comprising a common wake-up physical synchronization, a station dedicated wake-up preamble, and a packet length, wherein each station dedicated wake-up preamble comprises a wake-up identifier for a station of the one or more stations and the packet length indicates a duration of the packet, and wherein a station of the one or more stations includes a receive bandwidth of less than twenty megaHertz, and transmit the packet to the one or more stations during a transmission opportunity (TXOP) obtained by the AP.

Claims

1. An apparatus of a high-efficiency (HE) access point (AP), the apparatus comprising:

processing circuitry configured to generate a packet for transmission on one or more sub-channels for one or more stations, the packet comprising a common wake-up physical synchronization for processing by a physical layer of the one or more stations, a station dedicated wake-up preamble for processing by one of (1) a physical layer and (2) a physical layer and a media access control (MAC) layer, and a packet length, wherein each station dedicated wake-up preamble comprises a wake-up identifier for a station of the one or more stations and the packet length indicates a duration of the packet, and wherein a station of the one or more stations is capable of decoding a receive bandwidth of less than twenty megaHertz; and

transceiver circuitry configured to transmit the packet to the one or more stations during a transmission opportunity (TXOP) obtained by the AP.

2. The apparatus of claim 1, wherein the processing circuitry is further configured to:

generate the packet to include the packet length is in a dedicated field of the packet in a per station portion of the packet.

3. The apparatus of claim 1, wherein the processing circuitry is further configured to:

generate the packet to include the packet length in a signal-A (SIG-A) field of the packet in a per station portion of the packet.

4. The apparatus of claim 1, wherein the processing circuitry is further configured to:

generate the packet to include the packet length in a signal-B (SIG-B) field of the packet in a per station portion of the packet.

5. The apparatus of claim 1, wherein the one or more stations include an LRLP station and a legacy station, and wherein the processing circuitry is further configured to:

generate the packet to include long range low power (LRLP) mixed TXOP) data indicating a time frame in which one or more of the LRLP station and legacy station is to communicate with the apparatus.

6. The apparatus of claim 5, wherein the processing circuitry is further configured to:

generate the packet to include the LRLP mixed TXOP data in a dedicated field of the packet in a per station portion of the packet.

7. The apparatus of claim 5, wherein the processing circuitry is further configured to:

generate the packet to include the LRLP mixed TXOP data in a payload field of the packet.

8. The apparatus of claim 1, wherein the one or more stations include an LRLP station and a legacy station, and wherein the processing circuitry is further configured to:

generate the packet to include only long range low power (LRLP) data indicating a time frame in which only the LRLP station is to communicate with the AP and the legacy station is prohibited from communicating with the AP.

9. The apparatus of claim 8, wherein the processing circuitry is further configured to:

generate the packet such that the only LRLP data is included in a payload field of the packet.

10. The apparatus of claim 1, wherein the one or more sub-channels have a bandwidth of one of the following group:

26 tones, 52 tones, and 106 tones, 242 tones, 484 tones, and 996 tones with tone spacing of 20/256 MHz and the packet is transmitted in accord with orthogonal frequency division multiple access (OFDMA).

11. The apparatus of claim 10, wherein the packet is transmitted on a channel with a bandwidth of one of the following group about:

2 mega Hertz (MHz), 2.03 MHz, 2.6 MHz, 5 MHz, 10 MHz, 20 MHz, 40 MHz, 80 MHz, 160 MHz, and 320 MHz.

12. The apparatus of claim 11, wherein the packet further comprises a legacy short-training field (L-STF), a legacy long training field (L-LTF), and a legacy signal (L-SIG) field before the common wake up physical synchronization and wherein the L-STF, L-LTF, and L-SIG are transmitted in 20 MHz bandwidth increments to cover the entire bandwidth.

13. The apparatus of claim 12, wherein the one or more stations are constrained from decoding the L-STF, L-LTF, and L-SIG.

14. The apparatus of claim 1, wherein the access point is an Institute of Electrical and Electronic Engineers (IEEE) 802.1 lax access point.

15. The apparatus of claim 1, wherein the one more stations include one or more from the following group:

an Long Range Low Power device, an Internet of Things (loT) wireless device, a battery constrained device, an IEEE 802.11ax station, and a narrow bandwidth device of less than 20 MHz.

16. The apparatus of claim 1 further comprising memory coupled to the processing circuitry and transceiver circuitry, and one or more antennas coupled to the transceiver circuitry.

17. A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors, the instructions to configure the one or more processors to cause a wireless local-area network device to:

generate a packet for transmission on one or more sub-channels for one or more stations, the packet comprising a common wake-up physical synchronization for processing by one of a physical layer of the one or more stations, a station dedicated wake-up preamble for processing by one of (1) a physical access layer and (2) a physical access layer and a media access control (MAC) layer, and a packet length, wherein each station dedicated wake-up preamble comprises a wake-up identifier for a station of the one or more stations and the packet length indicates a duration of the packet, and wherein a station of the one or more stations is capable of decoding a receive bandwidth of less than twenty megaHertz; and

transmit the packet to the one or more stations during a transmission opportunity (TXOP) obtained by the AP.

18. The non-transitory computer-readable storage medium of claim 17, wherein:

the one or more sub-channels have a bandwidth of one the following group;

26 tones, 52 tones, 106 tones, 242 tones, 484 tones, and 996 tones with tone spacing of 20/256 MHz and the packet is transmitted in accord with orthogonal frequency division multiple access (OFDMA),

the packet is transmitted on a channel with a bandwidth of one of about;

2 mega Hertz (MHz), 2.03 MHz, 2.6 MHz, 5 MHz, 10 MHz, 20 MHz, 40 MHz, 80 MHz, 160 MHz, and 320 MHz,

the instructions further include instructions that configure the one or more processors to cause the local-area network device to generate the packet to include the packet length in one of the following group;

a dedicated field of the packet in a per station/access point (STA/AP) portion of the packet, a signal A (SIG-A) field of the packet in a per station portion of the packet, and a signal B (SIG-B) field of the packet in a per station portion of the packet, and

generate the packet to include long range low power (LRLP) mixed transmit operation (TXOP) data indicating a time frame in which the station is to communicate with the apparatus, the LRLP mixed TXOP data is included in one of the following group;

a dedicated field of the packet in a per station portion of the packet and a payload field of the packet.

19. A method performed by a wireless local-area network device, the method comprising:

generating a packet for transmission on one or more sub-channels for one or more stations, the packet comprising a common wake-up physical synchronization for processing by a physical layer of the one or more stations, a station dedicated wake-up preamble for processing by one of (1) a physical access layer and (2) a physical access layer and a media access control (MAC) layer of the one or more stations, and a packet length, wherein each station dedicated wake-up preamble comprises a wake-up identifier for a station of the one or more stations and the packet length indicates a duration of the packet; and

transmitting the packet to the one or more stations during a transmission opportunity (TXOP) obtained by the AP.

20. The method of claim 19, wherein:

the stations include a long range low power (LRLP) station and a legacy station,

the one or more sub-channels have a bandwidth of one the following group;

26 tones, 52 tones, 106 tones, 242 tones, 484 tones, and 996 tones with tone spacing of 20/256 MHz,

transmitting the packet includes transmitting the packet in accord with orthogonal frequency division multiple access (OFDMA),

transmitting the packet includes transmitting the packet on a channel with a bandwidth of one of about;

2 mega Hertz (MHz), 2.03 MHz, 2.6 MHz, 5 MHz, 10 MHz, 20 MHz, 40 MHz, 80 MHz, 160 MHz, and 320 MHz,

generating the packet includes generating the packet to include the packet length in one of the following group;

a dedicated field of the packet in a per station/access point (STA/AP) portion of the packet, a signal A (SIG-A) field of the packet in a per station/access point (STA/AP) portion of the packet, and a signal B (SIG-B) field of the packet in a per station/access point (STA/AP) portion of the packet, and

generating the packet includes generating the packet to include only LRLP data indicating a time frame in which only the LRLP station is to communicate with the apparatus and the legacy station prohibited from communicating with the apparatus, such that the only LRLP data is included in a payload field of the packet.