MIMO and bandwidth signaling in millimeter-wave systems
Techniques to enable dynamic bandwidth management at the physical layer level while maintaining backwards compatibility in wireless systems is provided. Furthermore, techniques for reducing the occurrence of exposed nodes are provided. A transmitter may transmit a frame including an indication that a PHY layer sub-header defining a bandwidth associated with a channel is present. Furthermore, the transmitter may transmit a third frame after receiving a second frame from a receiver to indicate to legacy stations that the TXOP was successful.
1. An apparatus comprising:
an interface; and
baseband circuitry coupled with the interface, the circuitry operable to execute one or more instructions that when executed cause the baseband circuitry to:
generate a protocol data unit to communicate wirelessly, the protocol data unit with a PHY layer header comprising a first sub-header and a second sub-header, the header comprising a first bit to indicate a presence of the first sub-header and a second bit to indicate a presence of the second sub-header, and the first sub-header comprising multiple bits to indicate a channel bandwidth to be used to communicate data and whether channel bonding or a single channel is used to generate the channel bandwidth, the channel bandwidth comprising a 2.16 Gigahertz channel bandwidth or a multiple of the 2.16 Gigahertz channel bandwidth based on a configuration of the multiple bits, the PHY Layer header comprising an indication of one or more multiple-input multiple-output (MIMO) training sequences; and
cause wireless transmission of the protocol data unit.
2. The apparatus of claim 1 , wherein the channel bandwidth comprises one of a 2.16 Gigahertz (GHz) channel bandwidth, a 4.32 GHz channel bandwidth, a 6.48 GHz channel bandwidth, and an 8.64 GHz channel bandwidth.
3. The apparatus of claim 1 , wherein channel bonding is utilized to generate the channel bandwidth.
4. The apparatus of claim 1 , the protocol data unit comprising one of a request-to-send (RTS) frame, a clear-to-send (CTS) frame, and a directional multi-gigabit (DMG) CTS frame.
5. The apparatus of claim 1 , wherein the protocol data unit comprises one or more of a short training field, the channel estimation field, a second sub-header, and a data payload field.
6. The apparatus of claim 1 , the circuitry to cause communication of the data utilizing the channel bandwidth during a transmit opportunity.
7. The apparatus of claim 1 , comprising:
a transmitter;
a receiver; and
a plurality of antennas coupled with the transmitter and the receiver.
8. The apparatus of claim 7 , the circuitry to cause the transmitter to transmit, via the plurality of antennas, the protocol data unit to indicate the channel bandwidth.
9. The apparatus of claim 7 , the circuitry to cause the transmitter to transmit, via the plurality of antennas, the protocol data unit comprising a request-to-send (RTS) frame to indicate the channel bandwidth, and the receiver to receive, via the plurality of antennas, a directional multi-gigabit (DMG) clear-to-send (CTS) frame corresponding to the RTS.
10. A non-transitory computer-readable storage medium, comprising a plurality of instructions, that when executed, enable processing circuitry to:
generate a protocol data unit to communicate wirelessly, the protocol data unit with a PHY layer header comprising a first sub-header and a second sub-header, the header comprising a first bit to indicate a presence of the first sub-header and a second bit to indicate a presence of the second sub-header, and the first sub-header comprising multiple bits to indicate a channel bandwidth to be used to communicate data and whether channel bonding or a single channel is used to generate the channel bandwidth, the channel bandwidth comprising a 2.16 Gigahertz channel bandwidth or a multiple of the 2.16 Gigahertz channel bandwidth based on a configuration of the multiple bits, the PHY Layer header comprising an indication of one or more multiple-input multiple-output (MIMO) training sequences; and
cause wireless transmission of the protocol data unit.
11. The non-transitory computer-readable storage medium of claim 10 , wherein the channel bandwidth comprises one of a 2.16 Gigahertz (GHz) channel bandwidth, a 4.32 GHz channel bandwidth, a 6.48 GHz channel bandwidth, and an 8.64 GHz channel bandwidth.
12. The non-transitory computer-readable storage medium of claim 10 , wherein channel bonding is utilized to generate the channel bandwidth.
13. The non-transitory computer-readable storage medium of claim 10 , to enable processing circuitry to generate the protocol data unit comprising one of a request-to-send (RTS) frame, a clear-to-send (CTS) frame, and a directional multi-gigabit (DMG) CTS frame.
14. The non-transitory computer-readable storage medium of claim 10 , wherein the protocol data unit comprises one or more of a short training field, a channel estimation field, the second sub-header, and a data payload field.
15. The non-transitory computer-readable storage medium of claim 10 , comprising a plurality of instructions, that when executed, enable processing circuitry to cause communication of the data utilizing the channel bandwidth during a transmit opportunity.
16. The non-transitory computer-readable storage medium of claim 10 , comprising a plurality of instructions, that when executed, enable processing circuitry to cause a transmitter to transmit, via a plurality of antennas, the protocol data unit to indicate the channel bandwidth.
17. The non-transitory computer-readable storage medium of claim 10 , comprising a plurality of instructions, that when executed, enable processing circuitry to cause a transmitter to transmit, via a plurality of antennas, the protocol data unit comprising a request-to-send (RTS) frame to indicate the channel bandwidth, and a receiver to receive, via the plurality of antennas, a directional multi-gigabit (DMG) clear-to-send (CTS) frame corresponding to the RTS.
18. A computer-implemented method, comprising:
generating a protocol data unit to communicate wirelessly, the protocol data unit with a PHY layer header comprising a first sub-header and a second sub-header, the header comprising a first bit to indicate a presence of the first sub-header and a second bit to indicate a presence of the second sub-header, and the first sub-header comprising multiple bits to indicate a channel bandwidth to be used to communicate data and whether channel bonding or a single channel is used to generate the channel bandwidth, the channel bandwidth comprising a 2.16 Gigahertz channel bandwidth or a multiple of the 2.16 Gigahertz channel bandwidth based on a configuration of the multiple bits, the PHY Layer header comprising an indication of one or more multiple-input multiple-output (MIMO) training sequences; and
causing wireless transmission of the protocol data unit.
19. The computer-implemented method of claim 18 , wherein the channel bandwidth comprises one of a 2.16 Gigahertz (GHz) channel bandwidth, a 4.32 GHz channel bandwidth, a 6.48 GHz channel bandwidth, and an 8.64 GHz channel bandwidth.
20. The computer-implemented method of claim 18 , wherein channel bonding is utilized to generate the channel bandwidth.
21. The computer-implemented method of claim 18 , the protocol data unit comprising one of a request-to-send (RTS) frame, a clear-to-send (CTS) frame, and a directional multi-gigabit (DMG) CTS frame.
22. The computer-implemented method of claim 18 , wherein the protocol data unit comprises one or more of a short training field, a channel estimation field, the second sub-header, and a data payload field.
23. The computer-implemented method of claim 18 , comprising causing communication of the data utilizing the channel bandwidth during a transmit opportunity.
24. The computer-implemented method of claim 18 , comprising causing a transmitter to transmit, via a plurality of antennas, the protocol data unit to indicate the channel bandwidth.
25. The computer-implemented method of claim 18 , causing a transmitter to transmit, via a plurality of antennas, the protocol data unit comprising a request-to-send (RTS) frame to indicate the channel bandwidth, and the receiver to receive, via the plurality of antennas, a directional multi-gigabit (DMG) clear-to-send (CTS) frame corresponding to the RTS.