Power reduction in a wireless network

Patent metadata

Field	Value
Publication number	US-2019045461-A1
Application number	US-201816134400-A
Country	US
Kind code	A1
Filing date	Sep 18, 2018
Priority date	Sep 18, 2018
Publication date	Feb 7, 2019
Grant date	—

Abstract

Methods, apparatuses, and computer readable media for power reduction in a wireless network are disclosed. An apparatus of a first access point is disclosed comprising processing circuitry configure to decode a first PPDU, the first PPDU including a trigger for control (TOC) frame, the TOC frame comprising resource allocations for deferral transmissions, the TOC frame including a first duration field indicating a duration of a transmission opportunity (TXOP). The processing circuitry may be further configured to respond to a determination that the TOC frame includes a resource allocation by encoding a second PPDU including a preamble portion and a media access control (MAC) portion including a receive with condition (ARC) frame, the ARC frame including a second duration field indicating a remaining duration of the TXOP, an address field indicating a MAC address of the first AP, and a condition field indicating a condition.

First claim

What is claimed is:

1 . An apparatus of a first access point (AP), the apparatus comprising memory; and processing circuitry coupled to the memory, the processing circuity configured to:
decode a first physical Layer Convergence Procedure (PLCP) Protocol Data Unit (PPDU), the first PPDU comprising a trigger for control (TOC) frame, the TOC frame comprising resource allocations for deferral transmissions, the TOC frame further comprising a first duration field, the first duration field indicating a duration of a transmission opportunity (TXOP), wherein the PPDU is received from a second AP; determine whether the TOC frame includes a resource allocation for the first access point to transmit a receive with condition (ARC) frame, the resource allocation comprising a resource unit (RU); in response to a determination that the TOC frame includes the resource allocation, encode a second PPDU, the second PPDU comprising a preamble portion and a media access control (MAC) portion, the MAC portion comprising the ARC frame, the ARC frame comprising a second duration field, an address field, and a condition field, wherein the second duration field indicates a remaining duration of the TXOP, the address field indicates a MAC address of the first AP, and the condition field indicates a condition, and wherein the ARC frame indicates that stations associated with the first AP that do not meet the condition should set their network allocation vector (NAV) based on the remaining duration of the TXOP; and generate signaling to cause the first AP to transmit the second PPDU in accordance with the RU.

2 . The apparatus of claim 1 , wherein the first PPDU is received over a first channel, and wherein the processing circuitry is further configured to:
generate signaling to cause the first AP to transmit the preamble to be transmitted over the first channel and the PPDU in accordance with the RU, wherein the RU is a subchannel of the first channel.

3 . The apparatus of claim 1 , wherein the processing circuitry is further configured to:
encode the preamble to comprise the resource allocations for deferral transmissions.

4 . The apparatus of claim 3 , wherein each resource allocation of the resource allocations for deferral transmissions comprises two or more from the following group: an association identification (AID), the RU, a coding type, a modulation and coding scheme (MCS), a spatial stream allocation, a target receive signal strength (RSSI), an indication of a type of deferral transmission, and an identification of an AP.

5 . The apparatus of claim 1 , wherein the processing circuitry is further configured to:
determine the TOC frame comprises the resource allocation for the first access point to transmit the ARC frame, if the resource allocation comprises a association identification (AID) that indicates that neighboring APs are to transmit ARC frames.

6 . The apparatus of claim 1 , wherein the processing circuitry is further configured to:
determine whether the TOC frame comprises the resource allocation for the first access point to transmit a clear-to-send (CTS) to self; in response to a determination that the TOC frame comprises the resource allocation for the first AP to transmit the CTS to self, encode a third PPDU, the third PPDU comprising the preamble portion and the MAC portion, the MAC portion comprising a CTS to self frame, the CTS to self frame comprising the second duration field, the second duration field indicating the remaining duration of the TXOP, and a receiver address field, the receiver address field indicating the MAC address of the first AP; and generate signaling to cause the first AP to transmit the third PPDU in accordance with the RU.

7 . The apparatus of claim 1 , wherein the condition is a receive signal strength indicator (RSSI) value, the RSSI value indicating that to meet the condition a station of the stations can transmit frames to the first AP that are received at the first AP with the RSSI value or a value higher than the RSSI value.

8 . The apparatus of claim 7 , wherein the ARC frame further comprises a transmit power (TXPWR) field, the TXPWR field indicating a TXPWR used by the first AP to transmit the ARC frame.

9 . The apparatus of claim 7 , wherein the condition further indicates a maximum transmit power the stations may use.

10 . The apparatus of claim 1 , wherein the second PPDU comprises a legacy signal field, the legacy signal field comprising a length field, the length field indicating a length of the second PPDU.

11 . The apparatus of claim 1 , wherein the ARC frame further comprises a field to indicate a bandwidth for the stations to set the NAV.

12 . The apparatus of claim 1 , wherein the first AP, the second AP, and the stations are configured to operate in accordance with one or more of the following communication standards: an Institute of Electrical and Electronic Engineers (IEEE) 802.1 lax, an IEEE 802.11 extremely-high throughput (EHT), IEEE 802.1 lay, and IEEE 802.11.

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

14 . A method performed by an apparatus of a first access point, the method comprising:
decoding a first physical Layer Convergence Procedure (PLCP) Protocol Data Unit (PPDU), the first PPDU comprising a trigger for control (TOC) frame, the TOC frame comprising resource allocations for deferral transmissions, the TOC frame further comprising a first duration field, the first duration field indicating a duration of a transmission opportunity (TXOP), wherein the PPDU is received from a second AP; determining whether the TOC frame comprises a resource allocation for the first access point to transmit a receive with condition (ARC) frame, the resource allocation comprising a resource unit (RU); in response to a determination that the TOC frame comprises the resource allocation, encoding a second PPDU, the second PPDU comprising a preamble portion and a media access control (MAC) portion, the MAC portion comprising the ARC frame, the ARC frame comprising a second duration field, an address field, and a condition field, wherein the second duration field indicates a remaining duration of the TXOP, the address field indicates a MAC address of the first AP, and the condition field indicates a condition, and wherein the ARC frame indicates that stations associated with the first AP that do not meet the condition should set their network allocation vector (NAV) based on the remaining duration of the TXOP; and generating signaling to cause the first AP to transmit the second PPDU in accordance with the RU.

15 . The method of claim 14 , wherein the first PPDU is received over a first channel, and wherein the method further comprises:
generating signaling to cause the first AP to transmit the preamble to be transmitted over the first channel and the PPDU in accordance with the RU, wherein the RU is a subchannel of the first channel.

16 . A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors of an apparatus of a station (STA), the instructions to configure the one or more processors to:
associate with an access point (AP); decode a preamble of a physical Layer Convergence Procedure (PLCP) Protocol Data Unit (PPDU), the preamble comprising resource allocations for decoding deferral transmissions in a media access control (MAC) portion of the PPDU; decode the deferral transmissions; in response to a deferral transmission of the deferr

Assignees

• Intel Corp

Inventors

• Fang Juan
• Cariou Laurent
• Azizi Shahrnaz
• Min Alexander W
• Kenney Thomas J
• Vannithamby Rath
• Balakrishnan Ravikumar

Classifications

• H04W52/367 Primary

  Power values between minimum and maximum limits, e.g. dynamic range · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W52/245

  taking into account received signal strength · CPC title

• H04W72/0473

  the resource being transmission power · CPC title

• H04L2101/622

  Layer-2 addresses, e.g. medium access control [MAC] addresses · CPC title