Bandwidth indication, TXOP protection, and bandwidth negotiation

1. A first wireless device configured to perform a bandwidth negotiation or bandwidth indication for frame exchange in a TXOP with a second wireless device, comprising:

a processor; and

a network interface connected to the processor, wherein the network interface is configured to,

announce by the first wireless device a channel puncture scheme indicating whether some channels covering a BSS operating bandwidth are punctured or not;

transmit a frame to the second wireless device indicating a bandwidth for the frame exchange;

receive a frame from the second wireless device indicating a negotiated bandwidth for the frame exchange; and

exchange frames with the second wireless device using the negotiated bandwidth;

wherein the transmitted frame indicates that the announced channels will not be further punctured.

2. The device of claim 1 , wherein the bandwidth negotiation is a static bandwidth negotiation.

3. The device of claim 1 , wherein the bandwidth negotiation is a dynamic bandwidth negotiation.

4. The device of claim 1 , wherein the transmitted frame indicates that the announced channels is further punctured.

5. The device of claim 4 , wherein the bandwidth negotiation is a static bandwidth negotiation.

6. The device of claim 4 , wherein the bandwidth negotiation is a dynamic bandwidth negotiation.

7. The device of claim 1 , wherein when the bandwidth negotiation is a dynamic bandwidth negotiation, the transmitted frame indicates that the announced channels may be further punctured.

8. The device of claim 1 , wherein when the bandwidth negotiation is a static bandwidth negotiation, the transmitted frame indicates that the announced channels will not be further punctured.

9. The device of claim 1 , wherein one bit of reserved bits in a service field indicates if the bandwidth is 320/160+160 MHz.

10. The device of claim 9 , wherein five bits of the reserved bits in the service field indicates the channel puncture scheme using U-SIG coding.

11. The device of claim 9 , wherein

four bits of the reserved bits in the service field indicates the channel puncture scheme,

for a 80 MHz frame, 4 values are used to indicate one channel being punctured and 1 value is used to indicate one 40 MHz channel being puncture,

for a 160 MHz frame, 8 values are used to indicate one channel being punctured and 4 values are used to indicate one 40 MHz channel being punctured,

for a 320 MHz frame with punctured 40 MHz channels or punctured 80 MHz channels, 8 values are used to indicate one 40 MHz channel being punctured and 4 values are used to indicate one 80 MHz channel being punctured,

for a 320 MHz frame with punctured 120 MHz channels, 12 values are used to indicate 120 MHz being punctured.

12. The device of claim 1 ,

wherein eight bits of reserved bits in a service field indicates the channel puncture scheme

wherein for a bandwidth less than or equal to 160 MHz each bit indicates where a related 20 MHz channel is punctured and for a 320 MHz bandwidth each bit indicates where a related 40 MHz channel is punctured.

13. The device of claim 1 ,

wherein the first wireless device announces a specific MAC address to indicate the that the bandwidth is greater than 160 MHz.

14. The device of claim 1 ,

wherein the transmitted frame includes an extend control frame with an extended subtype field and the transmitted frame body includes fields to indicate the bandwidth and the channel puncture scheme.

15. The device of claim 1 ,

wherein five bits in a duration field with a granularity of 32 us indicates the channel puncture scheme using U-SIG coding.

16. The device of claim 1 , wherein

four bits of a duration field with 16 us granularity indicates the channel puncture scheme,

for a 80 MHz frame, 4 values are used to indicate one 20 MHz channel being punctured and 1 value is used to indicate one 40 MHz channel being puncture,

for a 160 MHz frame, 8 values are used to indicate one 20 MHz channel being punctured and 4 values are used to indicate one 40 MHz channel being punctured,

for a 320 MHz frame with punctured 40 MHz channels or punctured 80 MHz channels, 8 values are used to indicate one 40 MHz channel being punctured and 4 values are used to indicate one 80 MHz channel being punctured,

for a 320 MHz frame with punctured 120 MHz channels, 12 values are used to indicate 120 MHz being punctured.

17. The device of claim 1 ,

wherein eight bits of a duration field with a 256 us granularity indicates the channel puncture scheme

wherein for a bandwidth less than or equal to 160 MHz each bit indicates where a related 20 MHz channel is punctured and for a 320 MHz bandwidth each bit indicates where a related 40 MHz channel is punctured.

18. A method performed by a first wireless device for bandwidth negotiation or bandwidth indication for frame exchange in a TXOP with a second wireless device, comprising:

announcing by the first wireless device a channel puncture scheme indicating whether some channels covering a BSS operating bandwidth are punctured or not;

transmitting a frame to the second wireless device indicating a bandwidth for the frame exchange;

receiving a frame from the second wireless device indicating a negotiated bandwidth for the frame exchange; and

exchanging frames with the second wireless device using the negotiated bandwidth;

wherein one bit of reserved bits in a service field indicates if the bandwidth is 320/160+160 MHz;

wherein four bits of the reserved bits in the service field indicates the channel puncture scheme,

wherein for a 80 MHz frame, 4 values are used to indicate one channel being punctured and 1 value is used to indicate one 40 MHz channel being puncture;

wherein for a 160 MHz frame, 8 values are used to indicate one channel being punctured and 4 values are used to indicate one 40 MHz channel being punctured;

wherein for a 320 MHz frame with punctured 40 MHz channels or punctured 80 MHz channels, 8 values are used to indicate one 40 MHz channel being punctured and 4 values are used to indicate one 80 MHz channel being punctured; and

wherein for a 320 MHz frame with punctured 120 MHz channels, 12 values are used to indicate 120 MHz being punctured.

19. A method performed by a first wireless device for bandwidth negotiation or bandwidth indication for frame exchange in a TXOP with a second wireless device, comprising:

announcing by the first wireless device a channel puncture scheme indicating whether some channels covering a BSS operating bandwidth are punctured or not;

transmitting a frame to the second wireless device indicating a bandwidth for the frame exchange;

receiving a frame from the second wireless device indicating a negotiated bandwidth for the frame exchange; and

exchanging frames with the second wireless device using the negotiated bandwidth;

wherein eight bits of reserved bits in a service field indicates the channel puncture scheme; and

wherein for a bandwidth less than or equal to 160 MHz each bit indicates where a related 20 MHz channel is punctured and for a 320 MHz bandwidth each bit indicates where a related 40 MHz channel is punctured.

20. A first wireless device configured to perform a bandwidth negotiation or bandwidth indication for frame exchange in a TXOP with a second wireless device, comprising:

a processor; and

a network interface connected to the processor, wherein the network interface is configured to,

announce by the first wireless device a channel puncture scheme indicating whether some channels covering a BSS operating bandwidth are punctured or not;

transmit a frame to the second wireless device indicating a bandwidth for the frame exchange;

receive a frame from the second wireless device indicating a negotiated bandwidth for the frame exchange; and

exchange frames with the second wireless device using the negotiated bandwidth; wherein when the bandwidth negotiation is a dynamic bandwidth negotiation, the transmitted frame indicates that the announced channels is further punctured.