Device and method of providing grant frame for bandwidth scheduling

Patent metadata

Field	Value
Publication number	US-2017202011-A1
Application number	US-201615084848-A
Country	US
Kind code	A1
Filing date	Mar 30, 2016
Priority date	Jan 11, 2016
Publication date	Jul 13, 2017
Grant date	—

Abstract

Devices and methods of limiting wideband STA communication are generally described. The STA receives, over a primary channel, a wakeup frame containing an indication of a SP or CBAP to acquire a wideband TXOP over a wide bandwidth channel including the primary channel and a secondary channel and a control trailer having an indication of the wide bandwidth channel. Prior to the SP/CBAP, the STA opens reception from the primary channel to the wide bandwidth channel. The STA then communicates with another STA over the wide bandwidth channel and subsequently reduces reception from the wide bandwidth channel to the primary channel. The wakeup frame originates from an AP/PCP or the other STA, and contains fields indicating the wakeup frame length and SP or a sensing time length prior to the CBAP.

First claim

What is claimed is:

1 . An apparatus of a station (STA) comprising:
memory and processing circuitry arranged to:
decode, on a first channel, a wakeup frame comprising an indication of one of a wideband transmission opportunity (TXOP) and a service period (SP) over a wide bandwidth channel that comprises the first channel and another channel;
in response to extraction of the indication in the wakeup frame, prior to initiation of the one of the wideband TXOP and SP, open reception of the STA from the first channel to the wide bandwidth channel; and
in response to termination of the one of the wideband TXOP and SP, reduce the reception of the STA from the wide bandwidth channel to the first channel.

2 . The apparatus of claim 1 , wherein:
the first channel is a primary Directional Multi-Gigabit (DMG) channel and the other channel comprises a secondary channel associated with the primary channel, communication at least one of encoded and decoded through use of baseband circuitry of the STA.

3 . The apparatus of claim 1 , wherein:
the one of the wideband TXOP and SP is a SP, and the wakeup frame comprises a duration that indicates a start of the wideband TXOP after the wakeup frame and a dynamic allocation information field comprising an allocation duration that indicates a length of the wideband TXOP.

4 . The apparatus of claim 1 , wherein:
the wakeup frame comprises a grant frame comprising a control trailer, the control trailer comprising the indication.

5 . The apparatus of claim 4 , wherein:
a Physical Layer (PHY) header of the wakeup frame comprises a legacy Header field (L-Header) field comprising a reserved bit that indicates presence of the control trailer.

6 . The apparatus of claim 1 , wherein:
the wakeup frame comprises a transmitter address that indicates the wakeup frame originated from one of an access point (AP) and Personal Basic Service Set (PBSS) control point (PCP), the one of the wideband TXOP and SP is the SP, and the processing circuitry is configured to decode the wakeup frame within a grant period during which another wakeup frame configured to indicate the SP is sent to another STA from the one of the AP and PCP.

7 . The apparatus of claim 6 , wherein the processing circuitry is further arranged to:
at least one of encode transmissions to and decode transmissions from the other STA during the SP.

8 . The apparatus of claim 1 , wherein:
the one of the wideband TXOP and SP is the wideband TXOP, the wakeup frame comprises a transmitter address that indicates the wakeup frame originated from another STA, and the processing circuitry is configured to at least one of encode transmissions to and decode transmissions from the other STA during the wideband TXOP.

9 . The apparatus of claim 8 , wherein:
the wakeup frame comprises a duration and a dynamic allocation information field comprising an allocation duration, the duration and allocation duration configured to indicate a rendezvous time at which the STA is to be available for the wideband TXOP over the wide bandwidth channel.

10 . The apparatus of claim 8 , wherein the processing circuitry is further configured to:
in response to the indication and prior to the wideband TXOP, perform channel sensing in the first channel for a first period of time and subsequently switch to channel sensing in the wide bandwidth channel.

11 . The apparatus of claim 10 , wherein the processing circuitry is further configured to:
subsequent to performing the channel sensing in the wide bandwidth channel, engage in a Contention Based Access Period (CBAP) to acquire the wideband TXOP.

12 . The apparatus of claim 11 , wherein to engage in the contention-based channel access mechanism, the processing circuitry is configured to:
generate a request-to-send (RTS) to the other STA in all channels sensed as idle, the channels including a primary channel and a first potential secondary channel, the RTS comprising a control trailer that indicates an actual bandwidth of the STA.

13 . The apparatus of claim 12 , wherein to engage in the contention-based channel access mechanism, the processing circuitry is further configured to:
in response to transmission of the RTS, decode a clear-to-send (CTS) from the other STA in the primary channel, the CTS comprising a control trailer that indicates an actual bandwidth of the other STA.

14 . The apparatus of claim 13 , wherein the processing circuitry is further configured to:
in response to the CTS, generate a Physical Layer Convergence Procedure (PLCP) protocol data unit (PPDU) comprising a bandwidth indicated in the control trailer of the CTS for transmission in the primary channel and at least one of the first and second potential secondary channel, the bandwidth indicated in at least one of the RTS and CTS being at most a bandwidth of the wide bandwidth channel.

15 . The apparatus of claim 1 , wherein:
the wakeup frame comprises a dynamic allocation information field comprising an allocation type field, the allocation type field comprising reserved bits whose combinations indicate an allocation type of the wakeup frame, the allocation type comprising one of a plurality of channel bandwidth configurations indicating a type of the one of the wideband TXOP and SP, the dynamic allocation information field comprising a bandwidth of the wide bandwidth channel.

16 . The apparatus of claim 1 , further comprising:
an antenna arranged to transmit and receive communications with another STA during the one of the wideband TXOP and SP.

17 . An apparatus of a wireless device, the apparatus comprising:
memory; and processing circuitry arranged to:
encode, for transmission over a primary channel, a first wakeup frame comprising a first receiver address (RA) that indicates a first STA, an indication of a service period and an indication of a wide bandwidth channel that comprises the primary channel and a secondary channel, the first wakeup frame configured to trigger the first STA to open reception from the primary channel to the wide bandwidth channel prior to the service period and reduce reception from the wide bandwidth channel to the primary channel after the service period; and
encode, for transmission over the primary channel, a second wakeup frame comprising a second RA that indicates a second STA, an indication of the service period and an indication of the wide bandwidth channel, the second wakeup frame configured to trigger the second STA to open reception from the primary channel to the wide bandwidth channel prior to the service period and reduce reception from the wide bandwidth channel to the primary channel after the service period.

18 . The apparatus of claim 17 , wherein:
the wakeup frame comprises a transmitter address that indicates the wakeup frame originated from one of an access point (AP) and personal basic service set (PBSS) control point STA (PCP).

19 . The apparatus of claim 17 , wherein:
the service period is configured for dedicated communications between the first and second STAs over the wide bandwidth channel.

20 . The apparatus of claim 17 , wherein:
the wakeup frame comprises a duration that indicates a length of the wakeup frame and a dynamic allocation information field comprising an allocation duration that indicates a length of the service period.

21 . The apparatus of claim 17 , wherein:
the wakeup frame comprises a grant frame comprising a control trailer, the control trailer comprising the indicat

Assignees

• Trainin Solomon B
• Kasher Assaf
• Cordeiro Carlos
• Cariou Laurent

Inventors

• Trainin Solomon B
• Kasher Assaf
• Cordeiro Carlos
• Cariou Laurent

Classifications

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W52/0229

  where the received signal is a wanted signal · CPC title

• H04W74/0816

  with collision avoidance · CPC title

• H04W52/0216 Primary

  using a pre-established activity schedule, e.g. traffic indication frame · CPC title

• H04W72/14 Primary

  Electricity · mapped topic