Device and method of providing grant frame for bandwidth scheduling

• US 9,992,741 B2
• Filed: 03/30/2016
• Issued: 06/05/2018
• Est. Priority Date: 01/11/2016
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel IP Corporation (Intel Corporation)
• Inventors: Trainin, Solomon B., Kasher, Assaf, Cordeiro, Carlos, Cariou, Laurent
• Primary Examiner(s): Qin, Zhiren
• Application Number:
  US15/084,848
• Publication Number:
  US 20170202011A1
• Time in Patent Office: 797 Days
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/0229 where the received signal is a wanted signal
• CPC Class Codes: H04W 74/0816 with collision avoidance
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: Y02D 30/70 in wireless communication networks

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.

Claims

1. An apparatus of a station (STA) comprising:

memory and processing circuitry arranged to;

decode, on a first channel from another device, a grant 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, the indication indicating a start time of the one of the wideband TXOP and SP relative to the grant frame, the start time being non-zero;

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 for reception of a transmission from the other device; 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 indication further indicates a dynamic allocation information field comprising an allocation duration that indicates a length of the one of the wideband TXOP and SP.

4. The apparatus of claim 1, wherein:

the grant frame comprises 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 grant frame comprises a transmitter address that indicates the grant 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 grant frame within a grant period during which another grant 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 grant frame comprises a transmitter address that indicates the grant 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 grant 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 grant 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 grant 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 grant 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 indication indicating a start time of the service period relative to the grant frame, the start time being non-zero, the first grant 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 grant frame comprising a second RA that indicates a second STA, the indication of the service period, including the start time, and the indication of the wide bandwidth channel, the second grant 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 grant frame comprises a transmitter address that indicates the grant 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 grant frame comprises a duration that indicates a length of the grant 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 grant frame comprises a control trailer, the control trailer comprising the indication.

22. The apparatus of claim 21, wherein:

a Physical Layer (PHY) header of the grant frame comprises a legacy Header field (L-Header) field comprising a reserved bit that indicates presence of the control trailer.

23. The apparatus of claim 17, wherein:

the grant frame comprises an allocation type field comprising reserved bits whose combinations indicate an allocation type of the grant frame, the allocation type comprising one of a plurality of channel bandwidth configurations.

24. A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors of a station (STA), the one or more processors to configure the STA to:

receive, on a primary channel from another device, a grant frame comprising;

a dynamic allocation information (DAI) field comprising an indication of one of a service period and a Contention Based Access Period (CBAP) to acquire a wideband transmission opportunity (TXOP) over a wide bandwidth channel, and

a trailer field comprising a control trailer, the control trailer comprising an indication of the wide bandwidth channel, the wide bandwidth channel comprising the primary channel and a secondary channel, the indication indicating a start time of the one of the service period and CBAP relative to the grant frame, the start time being non-zero;

in response to the grant frame, open reception of the STA from the primary channel to the wide bandwidth channel prior to the one of the service period and CBAP;

communicate with another STA during the one of the service period and CBAP using the wide bandwidth channel; and

in response to termination of the one of the service period and CBAP, reduce the reception of the STA from the wide bandwidth channel to the primary channel.

25. The medium of claim 24, wherein:

when the DAI field indicates the service period;

the grant frame comprises a duration that indicates a length of the grant frame and a dynamic allocation information field comprising an allocation duration that indicates a length of the service period,

the grant frame comprises a transmitter address that indicates the grant frame originated from one of an access point (AP) and personal basic service set (PBSS) control point (PCP) STA and

the one or more processors further configure the STA to receive the grant frame within a grant period during which another grant frame configured to indicate the service period is sent to the other STA from the one of the AP and PCP.

26. The medium of claim 24, wherein:

when the DAI field indicates the CBAP;

the grant 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 CBAP over the wide bandwidth channel,

the grant frame comprises a transmitter address that indicates the grant frame originated from the other STA, and

the one or more processors further configure the STA to, prior to the CBAP, perform channel sensing in the first channel for a first period of time and subsequently switch to channel sensing in the wide bandwidth channel.

27. The medium of claim 26, wherein the one or more processors further configure the STA to:

transmit a request-to-send (RTS) to the other STA in all channels sensed as idle, the channels including the primary channel and a first potential secondary channel, the RTS comprising a control trailer that indicates an actual bandwidth of the STA,

in response to transmission of the RTS, receive a clear-to-send (CTS) from the other STA in the primary channel and a second potential secondary channel, the CTS comprising a control trailer that indicates an actual bandwidth of the other STA, and

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.

28. A method of controlling channel use of a station (STA), the method comprising:

receiving, on a primary channel, a grant frame comprising;

a dynamic allocation information (DAI) field comprising an indication of one of a service period and a Contention Based Access Period (CBAP) to acquire a wideband transmission opportunity (TXOP) over a wide bandwidth channel, and

a trailer field comprising a control trailer, the control trailer comprising an indication of the wide bandwidth channel, the indication indicating a start time of the one of the service period and CBAP relative to the grant frame, the start time being non-zero, the wide bandwidth channel comprising the primary channel and a secondary channel;

in response to receiving the grant frame, opening reception of the STA from the primary channel to the wide bandwidth channel prior to the one of the service period and CBAP;

communicating with another STA during the one of the service period and CBAP using the wide bandwidth channel; and

in response to termination of the one of the service period and CBAP, reducing the reception of the STA from the wide bandwidth channel to the primary channel.

29. The method of claim 28, wherein:

when the DAI field indicates the service period;

the grant frame comprises a duration that indicates a length of the grant frame and a dynamic allocation information field comprising an allocation duration that indicates a length of the service period,

the grant frame comprises a transmitter address that indicates the grant frame originated from one of an access point (AP) and personal basic service set (PBSS) control point (PCP) STA and

the method further comprises receiving the grant frame within a grant period during which another grant frame configured to indicate the service period is sent to the other STA from the one of the AP and PCP; and

when the DAI field indicates the CBAP;

the grant 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 CBAP over the wide bandwidth channel,

the grant frame comprises a transmitter address that indicates the grant frame originated from the other STA, and

the method further comprises, prior to the CBAP, performing channel sensing in the first channel for a first period of time and subsequently switching to channel sensing in the wide bandwidth channel.