CN109088700B

CN109088700B - Wireless communication method

Info

Publication number: CN109088700B
Application number: CN201811008016.1A
Authority: CN
Inventors: 王颖
Original assignee: Zhuhai Huge Ic Co ltd
Current assignee: Zhuhai Huge Ic Co ltd
Priority date: 2018-08-30
Filing date: 2018-08-30
Publication date: 2021-10-29
Anticipated expiration: 2038-08-30
Also published as: CN109088700A

Abstract

The invention discloses a wireless communication method, which generates an NDP _2M RTS frame structure comprising a Short Training Frame (STF), a Long Training Frame (LTF) and a signal frame (SIG); sending the NDP _2M RTS frame structure; generating the NDP _2M RTS frame structure further includes determining control information for distinguishing NDP _2M RTS from NDP _2M CTS, NDP _2M CF-End, NDP _2M PS-Poll, NDP _2M Ack, NDP _2M PS-Poll-Ack, NDP _2M Block Ack, NDP _2M Beamforming Report Poll, NDP _2M Page, and NDP _2M Request; including control information in a null data packet carrying medium access control information frame body, NDP CMAC frame body; setting a request sending indication bit for indicating that NDP _2M RTS is requested to be sent in the empty data packet carrying a media access control information frame body NDP CMAC frame body; the invention designs an NDP _2M RTS frame structure through the frame structure of NDP _2M, and because NDP _2M is composed of 6 symbols, which is 7 symbols less than the traditional 2M RTS, the NDP _2M RTS frame structure has shorter duration than the traditional 2M RTS.

Description

Wireless communication method

All as the field of technology

The present invention relates to the field of wireless communication technologies, and in particular, to a wireless communication method.

All the above-mentioned background techniques

The RTS/CTS protocol (request to send/clear to send protocol) is equivalent to a handshake protocol and is mainly used to solve the problem of "hidden terminal". In the 802.11ah protocol, a base station makes an RTS-CTS channel reservation by transmitting an RTS. The RTS includes 1M _ RTS and 2M _ RTS, where 1M and 2M are the bandwidth of the RTS.

As shown in fig. 1, in the related art, a 2M _ RTS includes a physical layer header and a payload; the physical layer header includes Short Training Frame (STF) (short train frame), Long Training Frame (LTF) (Long train frame), signal frame (SIG) (signal), and probing data frame (tracking Symbols); the payload includes a Data frame Data; the Data frame Data includes a Service frame Service, a physical layer convergence Protocol Service Data Unit (PSDU), a Bit Padding frame Bit Padding if needed, and a Tail Bit frame Tail Bits; the physical layer convergence protocol service data unit Frame PSDU includes a Frame control Frame, a Duration, a receiving address ra (receive address), a transmitting address ta (transmission address), and a Frame check sequence fcs (Frame check sequence).

When the number of spatial streams N_strsWhen the bandwidth BW is 2Mhz, and the modulation and coding scheme mcs (modulation and coding scheme) is 0, the short Training frame STF, the long Training frame LTF, and the signal frame SIG of 2M _ RTS are all 2 Symbols, the Training Data frame Training Symbols are 0 Symbols, and the Data frame Data is 7 Symbols. Each symbol is 40 microseconds in duration, so 2M _ RTS is (2+2+2+7) × 40 in duration, i.e.13 x 40 microseconds, longer duration.

Developing a 2M _ RTS frame structure with shorter duration becomes a problem to be solved by those skilled in the art.

In the prior art, a Null Data Packet (NDP) is a null frame without data, including a physical layer header, but not including a payload. As shown in fig. 2, the physical layer header of NDP _2M includes a short training frame STF, a long training frame LTF, and a signal frame SIG; the signal frame SIG includes a Null data packet carrying medium access control information frame body NDP CMAC frame body, a Null data packet Indication frame NDP Indication, a cyclic redundancy check frame crc (cyclic redundancy check), and a Tail frame Tail.

Short training frame STF, long training frame LTF, and signal frame SIG are all 2 symbols. Since each symbol duration is 40 microseconds, NDP _2M duration is (2+2+2) × 40, i.e., 6 × 40 microseconds, shorter than the duration of 2M _ RTS. In the prior art, persons skilled in the art of wireless communication have developed NDP _2M CTS, NDP _2M CF-End, NDP _2M PS-Poll, NDP _2M Ack, NDP _2M PS-Poll-Ack, NDP _2M BlockAck, NDP _2M Beamforming Report Poll, NDP _2M Paging, and NDP _2M Request using the frame structure of NDP _ 2M. NDP _2M CTS, NDP _2M CF-End, NDP _2M PS-Poll, NDP _2M Ack, NDP _2M PS-Poll-Ack, NDP _2M Block Ack, NDP _2M Beamforming Report Poll, NDP _2M Page, and NDP _2M Request are each comprised of a short training frame STF, a long training frame LTF, and a signal frame SIG, each 6 x 40 microseconds in duration.

All the contents of the invention

The present invention aims to provide a wireless communication method that shortens the duration of 2M _ RTS. The invention is realized by the following technical scheme:

a wireless communication method generates an NDP _2M RTS frame structure comprising a Short Training Frame (STF), a Long Training Frame (LTF) and a signal frame (SIG); sending the NDP _2M RTS frame structure;

the signal frame SIG comprises a null data packet carrying media access control information frame body NDP CMAC frame body, a null data packet Indication frame NDP Indication, a cyclic redundancy check frame CRC and a Tail frame Tail; the null data packet carrying a medium access control information frame body NDP CMAC frame body is represented by 37 bits B0, B2 … … B36;

generating the NDP _2M RTS frame structure further includes determining control information for distinguishing NDP _2M RTS from NDP _2M CTS, NDP _2M CF-End, NDP _2M PS-Poll, NDP _2M Ack, NDP _2M PS-Poll-Ack, NDP _2M Block Ack, NDP _2M Beamforming Report Poll, NDP _2M Page, and NDP _2M Request; including control information in a null data packet carrying medium access control information frame body, NDP CMAC frame body; setting a request sending indication bit for indicating that NDP _2M RTS is requested to be sent in the empty data packet carrying a media access control information frame body NDP CMAC frame body;

the null data packet carries a media access control information frame body NDP CMAC frame body, and further comprises a type bit NDP CMAC frame type, an Uplink/Downlink indication bit Uplink/Downlink Indicator, a sending end/receiving end address bit TA/RA, a Partial basic service set address indication bit Partial BSSID, a channel occupation time bit Duration and a Bandwidth indication bit Bandwidth Indicator;

the type bit NDP CMAC frame type consists of 3 bits, and distinguishes NDP _2M CTS, NDP _2M CF-End, NDP _2M PS-Poll, NDP _2M Ack, NDP _2M PS-Poll-Ack, NDP _2M Block Ack, NDP _2M Beamforming Report Poll, NDP _2M packing and NDP _2M Request; the Uplink/Downlink Indicator bit Uplink/Downlink Indicator is composed of 1 bit and distinguishes Uplink and Downlink; the transmitting end/receiving end address bit TA/RA is composed of 13 bits and represents a transmitting end address TA or a receiving end address RA; the channel occupancy time bit Duration consists of 10 bits and represents the channel occupancy time Duration; the Bandwidth indication bit Bandwidth Indicator consists of 2 bits and represents four Bandwidth bandwidths;

the request sending indication bit consists of 1 bit, and distinguishes NDP _2M RTS from NDP _2M Ack, NDP _2M PS-Poll-Ack, NDP _2M Beamforming Report Poll and NDP _2M Paging, and the Partial basic service set address indication bit Partial BSSID consists of 7 bits and is used for indicating a basic service set address; or, the request sending indication bit is composed of 2 bits, one bit distinguishes between NDP _2M CTS and NDP _2M CF-End, the other bit distinguishes between NDP _2M RTS and NDP _2M CTS, and between NDP _2M CF-End, and the Partial basic service set address indication bit Partial BSSID is composed of 6 bits and is used for indicating a basic service set address.

As a specific technical solution, the value of the type bit NDP CMAC frame type is 0; the request transmission indication bit includes a clear to send/contention free period End indication bit CTS/CF-End Indicator and a contention free period End/request to send indication bit CF-End/RTS Indicator; the CTS/CF-End Indicator consists of one bit, and distinguishes between an NDP _2M CTS and an NDP _2M CF-End by values of 0 and 1; the contention-free period End/request transmission indication bit CF-End/RTS Indicator is composed of one bit, and distinguishes NDP _2M CF-End from NDP _2M RTS by values of 0 and 1.

Further, the type bit NDP CMAC frame type consists of B0, B1, and B2; the CTS/CF-End Indicator consists of B3; the uplink/Downlink indication bit Upiink/Downlink Indicator consists of a bit B4; the transmitting terminal/receiving terminal address bit TA/RA is composed of B5 and B6 … … B17; the Partial basic service set address indication bits Partial BSSID are comprised of B18, B19 … … B23; the channel occupation time bit Duration consists of B24 and B25 … … B33; the Bandwidth indication bit Bandwidth Indicator consists of B34 and B35; the contention-free period End/request transmission indication bit CF-End/RTS Indicator is composed of B36.

As a specific technical solution, the value of the type bit NDP CMAC frame type is 0; the request transmission indication bit includes a clear to send/contention free period End indication bit CTS/CF-End Indicator and a clear to send/request to send indication bit CTS/RTS Indicator; the CTS/CF-End Indicator consists of one bit, and distinguishes between an NDP _2M CTS and an NDP _2M CF-End by values of 0 and 1; the clear to send/request to send indication bit CTS/RTS Indicator is composed of one bit, and distinguishes NDP _2M CTS from NDP _2M RTS by values of 0 and 1.

Further, the type bit NDP CMAC frame type consists of B0, B1, and B2; the CTS/CF-End Indicator consists of B3; the Uplink/Downlink Indicator bit Uplink/Downlink Indicator consists of a bit B4; the transmitting terminal/receiving terminal address bit TA/RA is composed of B5 and B6 … … B17; the Partial basic service set address indication bits Partial BSSID are comprised of B18, B19 … … B23; the channel occupation time bit Duration consists of B24 and B25 … … B33; the Bandwidth indication bit Bandwidth Indicator is represented by B34, B35; the clear to send/request to send indication bit CTS/RTS Indicator is composed of B36.

As a specific technical solution, the value of the type bit NDP CMAC frame type is 2; the request transmission indication bit comprises an acknowledgement/request transmission indication bit Ack/RTS Indicator; the Ack/RTS Indicator consists of one bit, and distinguishes NDP _2M RTS from NDP _2M Ack by values of 0 and 1.

Further, the type bit NDP CMAC frame type consists of B0, B1, and B2; the Uplink/Downlink Indicator bit Uplink/Downlink Indicator consists of a bit B3; the transmitting terminal/receiving terminal address bit TA/RA is composed of B4 and B6 … … B16; the Partial basic service set address indication bits Partial BSSID are comprised of B17, B19 … … B23; the channel occupation time bit Duration consists of B24 and B25 … … B33; the Bandwidth indication bit Bandwidth Indicator is represented by B34, B35; the Ack/RTS Indicator bit Ack/RTS Indicator is composed of B36.

As a specific technical solution, the value of the type bit NDP CMAC frame type is 3; the request sending indication bit comprises a power-saving inquiry confirmation/request sending indication bit PS-Poil-Ack/RTS Indicator; the power-saving inquiry acknowledgement/request transmission indication bit PS-Poll-Ack/RTS Indicator is composed of one bit, and distinguishes NDP _2M RTS from NDP _2M PS-Poll-Ack by values of 0 and 1.

Further, the type bit NDP CMAC frame type consists of B0, B1, and B2; the Uplink/Downlink Indicator bit Uplink/Downlink Indicator consists of a bit B3; the transmitting terminal/receiving terminal address bit TA/RA is composed of B4 and B6 … … B16; the Partial basic service set address indication bits Partial BSSID are comprised of B17, B19 … … B23; the channel occupation time bit Duration consists of B24 and B25 … … B33; the Bandwidth indication bit Bandwidth Indicator is represented by B34, B35; the power-saving inquiry acknowledgement/request-to-send indication bit PS-Poll-Ack/RTS Indicator is composed of B36.

As a specific technical solution, the value of the type bit NDP CMAC frame type is 5; the request to send indication bit comprises a Beamforming Report query/request to send indication bit beamform Poll/RTS Indicator; the Beamforming Report query/request to send indication bit Beamforming Report Poll/RTS Indicator consists of one bit, and distinguishes NDP _2M RTS from NDP _2M Beamforming Report Poll by values of 0 and 1.

Further, the type bit NDP CMAC frame type consists of B0, B1, and B2; the Uplink/Downlink Indicator bit Uplink/Downlink Indicator consists of a bit B3; the transmitting terminal/receiving terminal address bit TA/RA is composed of B4 and B6 … … B16; the Partial basic service set address indication bits Partial BSSID are comprised of B17, B19 … … B23; the channel occupation time bit Duration consists of B24 and B25 … … B33; the Bandwidth indication bit Bandwidth Indicator is represented by B34, B35; the Beamforming Report query/request to send indication bit beamforrning Report Poll/RTS Indicator is composed of B36.

As a specific technical solution, the value of the type bit NDP CMAC frame type is 6; the request sending indication bit comprises a Paging/request sending indication bit Paging/RTS Indicator; the Paging/request transmission indication bit Paging/RTS Indicator is composed of one bit, and distinguishes NDP _2M RTS from NDP _2M Paging by values of 0 and 1.

Further, the type bit NDP CMAC frame type consists of B0, B1, and B2; the Uplink/Downlink Indicator bit Uplink/Downlink Indicator consists of a bit B3; the transmitting terminal/receiving terminal address bit TA/RA is composed of B4 and B6 … … B16; the Partial basic service set address indication bits Partial BSSID are comprised of B17, B19 … … B23; the channel occupation time bit Duration consists of B24 and B25 … … B33; the Bandwidth indication bit Bandwidth Indicator is represented by B34, B35; the Paging/request transmission indication bit Paging/RTS Indicator is composed of B36.

The invention has the beneficial effects that:

the invention designs an NDP _2M RTS frame structure through the frame structure of NDP _2M, and because NDP _2M is composed of 6 symbols, which is 7 symbols less than the traditional 2M RTS, the NDP _2M RTS frame structure has shorter duration than the traditional 2M RTS. Further, the invention sets a contention free period ending/request sending indication bit CF-End/RTS Indicator in a Reserved bit Reserved of the NDP _2M CF-End, and distinguishes the NDP _2M CF-End from the NDP _2M RTS by a value of 0 and 1. Further, the present invention sets a clear to send/request to send indication bit CTS/RTS Indicator in a Reserved bit Reserved of the NDP _2M CTS, and distinguishes the NDP _2M CTS from the NDP _2M RTS by a value of 0, 1. Further, the present invention sets an Ack/RTS Indicator in a Reserved bit Reserved of the NDP _2M Ack, and distinguishes the NDP _2M Ack from the NDP _2M RTS by a value of 0, 1. Further, the invention sets the energy-saving inquiry confirmation/request sending indication bit PS-Poll-Ack/RTS Indicator in the Reserved bit Reserved of the NDP _2M PS-Poll-Ack, and distinguishes the NDP _2M PS-Poll-Ack and the NDP _2M RTS through the values of 0 and 1. Further, the present invention distinguishes NDP _2M Beamforming Report Poll 1 from NDP _2M RTS by setting a Beamforming Report query/request to send indication bit Beamforming Report Poll/RTS Indicator in a Reserved bit Reserved of the NDP _2M Beamforming Report Poll by a value of 0, 1. Further, the present invention sets a Paging/request to send indication bit Paging/RTS Indicator in a Reserved bit Reserved of the NDP _2M Paging, and distinguishes the NDP _2M Paging from the NDP _2M RTS by a value of 0, 1.

Description of the drawings

In order to more clearly illustrate the embodiments of the present invention, the drawings used in the embodiments will be briefly described below. The drawings in the following description are only embodiments of the invention and other drawings may be derived from those drawings by a person skilled in the art without inventive effort.

FIG. 1 is a block diagram of a prior art 2M _ RTS frame structure;

FIG. 2 is a block diagram of a prior art NDP _2M frame structure;

FIG. 3 is a block diagram of a prior art NDP _2M CTS frame structure;

FIG. 4 is a block diagram of a prior art NDP _2M CF-End frame structure;

FIG. 5 is a block diagram of a prior art NDP _2M PS-Poll frame structure;

FIG. 6 is a block diagram of a prior art NDP _2M Ack frame structure;

FIG. 7 is a block diagram of a prior art NDP _2M PS-Poll-Ack frame structure;

fig. 8 is a block diagram of a prior art NDP _2M BlockAck frame structure;

FIG. 9 is a block diagram of a prior art NDP _2M Beamforming Report Poll frame structure;

FIG. 10 is a block diagram of a prior art NDP _2M Paging frame structure;

FIG. 11 is a block diagram of a prior art NDP _2M Probe Request frame structure;

fig. 12 is a block diagram of an NDP _2M RTS frame structure according to an embodiment of the present invention;

fig. 13 is a block diagram of an NDP _2M RTS frame structure according to a second embodiment of the present invention;

fig. 14 is a block diagram of an NDP _2M RTS frame structure according to a third embodiment of the present invention;

fig. 15 is a block diagram of an NDP _2M RTS frame structure according to a fourth embodiment of the present invention;

fig. 16 is a block diagram of an NDP _2M RTS frame structure according to a fifth embodiment of the present invention;

fig. 17 is a block diagram of an NDP _2M RTS frame structure according to a sixth embodiment of the present invention.

(specific embodiments) in all cases

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

As shown in fig. 3 to 11, the signal frames SIG of NDP _2M CTS, NDP _2M CF-End, NDP _2M PS-Poll, NDP _2M Ack, NDP _2M PS-Poll-Ack, NDP _2M BlockAck, NDP _2M Beamforming Report Poll, NDP _2M Paging, and NDP _2M Request are each composed of a null data packet carrying media access control information frame body NDP CMAC frame body, a null data packet Indication frame NDP Indication, a cyclic redundancy check frame CRC, and a Tail frame Tail.

As shown in fig. 3, the Null data packet of the NDP _2M CTS carries a media access control information frame body NDP CMAC frame body including a type bit NDP CMAC frame type (Null data packet carrying medium access control information format type), a Clear to send/no Contention period End indication bit CTS/CF-End Indicator (Clear to send/control free End Indicator), an Address indication bit Address Indicator, a receiver Address/Partial Basic Service Set Address indication bit RA/Partial BSSID (Receive Address/Partial Basic Service Set identifier), a channel occupation time bit Duration, an Early block indication bit Early block Indicator, a Bandwidth indication bit Bandwidth Indicator, and a Reserved bit Reserved.

As shown in FIG. 3, the type bit NDP CMAC frame type of NDP _2M CTS is represented by 3 bits B0-B2; a clear to send/contention free period End indication bit CTS/CF-End Indicator is represented by one bit B3; the Address indication bit Address Indicator is represented by a bit B4; the receiver address/Partial basic service set address indication bits RA/Partial BSSID are represented by 9 bits B5-B13; the channel occupancy time bit Duration is represented by 15 bits B14-B28; the Early slice Indicator bit Early Sector Indicator is represented by 1 bit B29; the Bandwidth indication bit Bandwidth Indicator is represented by 3 bits B30-B32; the Reserved bit Reserved is represented by 4 bits B33-B36.

Table 1 is a table of prior art NDP _2M CTS, NDP _2M CF-End, NDP _2M PS-Poll, NDP _2M Ack, NDP _2M PS-Poll-Ack, NDP _2M Block Ack, NDP _2M Beamforming Report Poll, NDP _2M Page, and NDP _2M Request, as shown below.

NDP CMAC frame type value	Meaning
		0	NDP_2M CTS
0	NDP_2M CF-END
		1	NDP_2M PS-Poll
2	NDP_2M Ack
		3	NDP_2M PS-Poll-Ack
4	NDP_2M BlockAck
		5	NDP_2M Beamforming Report Poll
6	NDP_2M Paging
		7	NDP_2M Probe Request

TABLE 1

As shown in Table 1, the type bit NDP CMAC frame type of NDP _2M CTS has a value of 0, the type bit NDP CMAC frame type of NDP _2M CF-End has a value of 0, the type bit NDP CMAC frame type of NDP _2M PS-Poll has a value of 1, the type bit NDP CMAC frame type of NDP _2M Ack has a value of 2, the type bit NDP CMAC frame type of NDP _2M Ack has a value of 3, the type bit NDP CMAC frame type of NDP _2M BlockAck has a value of 4, the type bit NDP CMAC frame type of NDP _2M Beamforming Report has a value of 5, the type bit NDP CMAC frame type of NDP _2M _ padding has a value of 6, and the type bit NDP CMAC frame type of NDP _2M _ Paging has a value of 7.

As shown below, Table 2 is a table of prior art NDP _2M CTS and NDP _2M CF-End differences.

NDP CMAC frame type value	CTS/CF-END Indicator	Meaning
			0	0	NDP_2M CTS
0	1	NDP_2M CF-END

TABLE 2

As shown in table 2, the value of the NDP _2M CTS clear to send/contention free period End indication bit CTS/CF-End Indicator is 0, and the value of the NDP _2M CF-End clear to send/contention free period End indication bit CTS/CF-End Indicator is 1.

As shown in fig. 4, the null data packet of NDP _2M CF-End carrying the medium access control information frame body NDPCMAC frame body includes a type bit NDP CMAC frame type, a clear to send/no contention period End indication bit CTS/CF-End Indicator, a Partial basic service set address indication bit Partial BSSID, a channel occupancy time bit Duration, and a Reserved bit Reserved.

As shown in FIG. 4, the type bit NDP CMAC frame type of NDP _2M CF-End is represented by 3 bits B0-B2; a clear to send/contention free period End indication bit CTS/CF-End Indicator is represented by one bit B3; the Partial basic service set address indication bit Partial BSSID is represented by 9 bits B4-B12; the channel occupancy time bit Duration is represented by 15 bits B13-B27; the Reserved bit Reserved is represented by 9 bits B28-B36.

As shown in fig. 5, the null data packet of the NDP _2M PS-Poll carrying the mac frame body NDP CMAC frame includes a type bit NDP CMAC frame type, a receiving address bit ra (received address), a transmitting address bit ta (transmission address), a Preferred modulation scheme bit Preferred MCS, and an uplink data indication bit udi (uplink data indicator).

As shown in FIG. 5, the type bit NDP CMAC frame type of NDP _2M PS-Poll is represented by 3 bits B0-B2; the receiver address bits RA are represented by 9 bits B3-B11; the initiator address bit TA is represented by 9 bits B12-B20; the Preferred modulation scheme bit Preferred MCS is represented by 4 bits B21-B24; the upstream data indication bit UDI is represented by 12 bits B4-B12.

As shown in fig. 6, the null Data packet of the NDP _2M Ack carries the medium access control information Frame body NDP CMAC Frame body including a type bit NDP CMAC Frame type, an acknowledgement Indication bit Ack ID, More Data bits More Data, an Idle Indication bit Idle Indication, a channel occupancy time bit Duration, a relay Frame bit delayed Frame, and a Reserved bit Reserved.

As shown in FIG. 6, the type bit NDP CMAC frame type of NDP _2M Ack is represented by 3 bits B0-B2; the acknowledgement indication bit Ack ID is represented by 16 bits B3-B18; more Data bits More Data are represented by 1 bit B19; the Idle Indication bit Idle Indication is represented by 1 bit B20; the channel occupancy time bit Duration is represented by 14 bits B21-B34; the relay Frame bit delayed Frame is represented by 1 bit B35; the Reserved bit Reserved is represented by 1 bit B36.

As shown in fig. 7, the null Data packet carrying medium access control information frame body NDP CMAC frame body of NDP _2M PS-Poll Ack includes a type bit NDP CMAC frame type, an acknowledgement Indication bit Ack ID, More Data bits More Data, Idle Indication bit Idle Indication, channel occupancy time bits Duration, and Reserved bits Reserved.

As shown in FIG. 7, the type bit NDP CMAC frame type of NDP _2M Ack is represented by 3 bits B0-B2; the acknowledgement indication bit Ack ID is represented by 16 bits B3-B18; more Data bits More Data are represented by 1 bit B19; the Idle Indication bit Idle Indication is represented by 1 bit B20; the channel occupancy time bit Duration is represented by 14 bits B21-B34; the Reserved bit Reserved is represented by 2 bits B35-B36.

As shown in fig. 8, the null data packet of NDP _2M BlockAck carries a media access Control information frame body NDP CMAC frame body including a type bit NDP CMAC frame type, a group acknowledgement indication bit BlockAck ID, a start Sequence Control bit Starting Sequence Control, and a group acknowledgement Bitmap bit Block Bitmap.

As shown in FIG. 8, the type bit NDP CMAC frame type of NDP _2M Block ack is represented by 3 bits B0-B2; the group acknowledgement indication bit BlockAck ID is represented by 6 bits B3-B8; the start Sequence Control bit Starting Sequence Control is represented by 12 bits B9-B20; the group acknowledgement Bitmap bit Block Ack Bitmap is represented by 16 bits B21-B36.

As shown in fig. 9, the null data packet of NDP _2M Beamforming Report Poll carries a medium access control information frame body NDP CMAC frame body including a type bit NDP CMAC frame type, an access point Address bit AP Address (access Address), a station Address Non-AP STA Address (Non access point state), a Feedback Segment retransmission Bitmap bit Feedback transmission Bitmap, and a Reserved bit Reserved.

As shown in FIG. 9, the type bit NDP CMAC frame type of the NDP _2M Beamforming Report Poll is represented by 3 bits B0-B2; the access point Address bit AP Address is represented by 9 bits B3-B11; the station Address Non-AP STA Address is represented by 13 bits B12-B24; the Feedback Segment Retransmission Bitmap bit Feedback transmission Bitmap is represented by 8 bits B25-B32; the Reserved bit Reserved is represented by 4 bits B33-B36.

As shown in fig. 10, the null data packet of NDP _2MPaging carries a medium access control information frame body NDP CMAC frame body including a type bit NDP CMAC frame type, a paging indication bit P-ID, an access point direction information bit APDI, and a Reserved bit Reserved.

As shown in FIG. 10, the type bit NDP CMAC frame type of NDP _2M Page is represented by 3 bits B0-B2; the paging indication bit P-ID is represented by 9 bits B3-B11; the access point direction information bit APDI is represented by 9 bits B12-B20; reserved bit Reserved is represented by 15 bits B22-B36.

As shown in fig. 11, the null data packet carrying medium Access control information frame body NDP CMAC frame body of NDP _2M Probe Request includes a Type bit NDP CMAC frame Type, a current Compressed service set identification/Access Network Option bit CSSID/ANO, a Compressed service set identification/Access Network Option bit Compressed SSID/Access Network Option, and a Request Probe Response Type Requested Probe Response Type.

As shown in FIG. 11, the type bit NDP CMAC frame type of NDP _2M Probe Request is represented by 3 bits B0-B2; the current compressed service set identification/access network option bit CSSID/ANO is represented by 1 bit B3; the Compressed service set identification/Access Network Option bit Compressed SSID/Access Network Option is represented by 16 bits B4-B19; the request Probe Response Type Requested Probe Response Type is represented by 4 bits B21-B24.

Since the values 0-7 of the type bit NDP CMAC frame type of NDP _2M have been exhausted, in order to distinguish NDP _2M RTS from NDP _2M CTS, NDP _2M CF-End, NDP _2M PS-Poll, NDP _2M Ack, NDP _2M PS-Poll-Ack, NDP _2M BlockAck, NDP _2M Beamforming Report, NDP _2M Paging, and NDP _2M Request, an indication bit of RTS needs to be set separately in the NDP _2M null data packet carrying the media access control information frame body NDP CMAC frame body.

As shown in FIGS. 3 to 11, since NDP _2M CTS, NDP _2M CF-End, NDP _2M PS-Poll, NDP _2M Ack, NDP _2M PS-Poll-Ack, NDP _2M Block Ack, NDP _2M Beamforming Report Poll, NDP _2M Page, and NDP _2M Request, only NDP _2M CTS, NDP _2M CF-End, NDP _2M Ack, NDP _2M PS-Poll-Ack, NDP _2M Beamforming Report Poll 1 and NDP _2M Page include Reserved bits Reserved, therefore, the invention utilizes the Reserved bit Reserved in NDP _2M CTS, NDP _2M CF-End, NDP _2M Ack, NDP _2M PS-Poll-Ack, NDP 2M Beamforming Report Poll and NDP _2M Paging to set the request sending indication bit for indicating the request to send RTS. The present embodiment sets the request transmission indication bit using a Reserved bit Reserved in NDP _2M CF-End.

As shown in fig. 12, in the present embodiment, an NDP _2M RTS frame structure includes a short training frame STF, a long training frame LTF, and a signal frame SIG; the signal frame SIG includes a null data packet-carrying medium access control information frame body NDP CMAC frame body represented by 37 bits B0-B36, a null data packet Indication frame NDP Indication represented by 1 bit B37, a cyclic redundancy check frame CRC represented by 4 bits B38-B41, and an end frame Tail represented by 6 bits B42-B47.

As shown in fig. 12, in this embodiment, the null data packet carrying media access control information frame body NDP CMAC frame body includes a type bit NDP CMAC frame type, a clear to send/no contention period End indication bit CTS/CF-End Indicator, an Uplink/Downlink indication bit Uplink/Downlink Indicator, a transmitting/receiving End address bit TA/RA, a Partial Basic service set address indication bit Partial BSSID (Partial Basic station subsystem Indicator), a channel occupation time bit Duration, a Bandwidth indication bit Bandwidth Indicator, and a no contention period End/request to send indication bit CF-End/RTS Indicator.

As shown in fig. 12, in the present embodiment, the type bit NDP CMAC frame type is represented by 3 bits B0-B2, and may represent a value of 0, 1 … … 7; the CTS/CF-End Indicator is represented by a bit B3, and may represent a value of 0, 1; the Uplink/Downlink Indicator bit Uplink/Downlink Indicator is represented by a bit B4, and may represent a value of 0, 1; the transmitting end/receiving end address bit TA/RA is represented by 13 bits B5-B17 and can represent the value 0, 1 … … 8191; the Partial basic service set address indication bit Partial BSSID is represented by 6 bits B18-B23, which may represent a value of 0, 1 … … 31; the channel occupancy time bit Duration is represented by 10 bits B24-B33, which may represent the value 0, 1 … … 1023; the Bandwidth indication bit Bandwidth Indicator is represented by 2 bits B34-B35, and may represent a value of 0, 1, 2, 3; the contention-free period END/request to send indication bit CF-END/RTS Indicator is represented by a bit B36, and may represent a value of 0, 1.

As shown below, Table 3 is a table of the differences between NDP _2M RTS and NDP _2M CF-End according to an embodiment of the present invention.

TABLE 3

As shown in table 3, in the present embodiment, the value of the type bit NDP CMAC frame type is 0, and the value of the CTS/CF-End Indicator is 1. When a contention-free period END/request transmission indication bit CF-END/RTS Indicator is a value of 0, the NDP _2M frame structure represents NDP CF-END; the NDP _2M frame structure represents an NDP _2M RTS when a contention free period END/request transmission indication bit CF-END/RTS Indicator is a value of 1.

In this embodiment, when the value of the Uplink/Downlink Indicator bit is 0, a station STA (station) in the basic service set BSS is a transmitting end, a connection point ap (access point) is a receiving end, and a transmitting end/receiving end address bit TA/RA indicates a transmitting end TA, that is, an address of the station STA; when the value of the Uplink/Downlink Indicator bit is 1, a connection point AP in a base station subsystem BSS is a transmitting end, a station STA is a receiving end, and a transmitting end/receiving end address bit TA/RA indicates a receiving end RA, that is, an address of the station STA.

In the 802.11ah protocol, there are a maximum of 8191 stations STA in a basic service set BSS. In this embodiment, the sender/receiver address bits TA/RA indicate the address of the station STA at all times. The sender/receiver address bit TA/RA has a value of 0, 1 … … 8191 represented by 13 bits B5-B17, and may represent addresses of all stations STA of a base station subsystem BSS.

In the 802.11ah protocol, the full basic service set address indicates that the BSSID is represented by 48 bits. In the present embodiment, a part of the basic service set address indication BSSID is represented by 6 bits B18-B23, i.e., a Partial basic service set address indication bit Partial BSSID.

In the 802.11ah protocol, after NDP _2M RTS ends, the channel is occupied by a short interframe space sifs (short interframe space) + Null DATA packet clear to send frame NDP CTS (Null DATA packet clear to send) + short interframe space sifs (short interframe space) + DATA frame DATA + Null DATA packet Acknowledgement frame NDP ACK (Null DATA packet Acknowledgement) in sequence. The short interframe space SIFS is 4 × 40 microseconds long, the null DATA packet clear-to-send frame NDP CTS is 6 × 40 microseconds long, the DATA frame DATA is 517 × 40 microseconds long, the null DATA packet acknowledgement frame NDP ACK is 6 × 40 microseconds long, and after the NDP _2M RTS ends, the channel occupancy time is (4+6+4+517+6) × 40 microseconds, that is, 537 × 40 microseconds.

In the embodiment, the channel occupation time frame Duration is represented by 10 bits B24-B33 as 0, 1 … … 1023, and the longest channel occupation time that can be represented is 1023 × 40 μ sec, which is greater than the time that the channel is occupied after the NDP _2MRTS is finished.

In the present embodiment, the Bandwidth indication bit Bandwidth Indicator represents a value of 0, 1, 2, 3 by 2 bits B34-B35. When the value of a Bandwidth indication bit Bandwidth Indicator is 0, the Bandwidth of an NDP _2M RTS frame structure is 2M; when the value of a Bandwidth indication bit Bandwidth Indicator is 1, the Bandwidth of an NDP _2M RTS frame structure is 4M; when the value of the Bandwidth indication bit Bandwidth Indicator is 2, the Bandwidth of the NDP _2M RTS frame structure is 8M; when the value of the Bandwidth indication bit Bandwidth Indicator is 3, the Bandwidth of the NDP _2M RTS frame structure is 16M.

The present embodiment further provides a wireless communication method, which generates an NDP _2M RTS frame structure including a short training frame STF, a long training frame LTF, and a signal frame SIG; sending the NDP _2M RTS frame structure; generating the NDP _2M RTS frame structure further comprises determining control information for distinguishing NDP _2M RTS from NDP _2M CF-End; including control information in a null data packet carrying medium access control information frame body, NDP CMAC frame body; and setting a contention-free period END/request sending indication bit CF-END/RTS Indicator for indicating that NDP _2M RTS is requested to be sent in a frame body NDP CMAC frame carried by the null data packet.

Example 2

As shown in fig. 13, the present embodiment is different from embodiment 1 in that: the value of the type bit NDP CMAC frame type is 0, and the clear-to-send/contention-free period End indication bit CTS/CF-End Indicator is 0; in this embodiment, a Reserved bit Reserved in the NDP _2M CTS is used to set a request sending indication bit; the null data packet carries a media access control information frame body NDP CMAC frame body, which comprises a clear to send/request to send indication bit CTS/RTS Indicator and does not comprise a contention free period END/request to send indication bit CF-END/RTS; the clear to send/request to send indication bit CTS/RTS Indicator is represented by one bit B36.

As shown below, Table 4 is a table of the differences between NDP _2M RTS and NDP _2M CTS in accordance with an embodiment of the present invention.

TABLE 4

As shown in table 4, in the present embodiment, when the clear to send/request to send indication bit CTS/RTS is 0, the NDP _2M frame structure indicates an NDP CTS; the NDP _2M frame structure represents an NDP _2M RTS when a clear to send/request to send indication bit CTS/RTS is 1.

The present embodiment further provides a wireless communication method, which generates an NDP _2M RTS frame structure including a short training frame STF, a long training frame LTF, and a signal frame SIG; sending the NDP _2M RTS frame structure; generating the NDP _2M RTS frame structure further comprises determining control information for distinguishing NDP _2M RTS from NDP _2M CTS; including control information in a null data packet carrying medium access control information frame body, NDP CMAC frame body; and setting a clear to send/request to send indication bit CTS/RTS Indicator for indicating that NDP _2M RTS is requested to be sent in the frame body NDP CMAC of the null data packet carrying media access control information frame body NDP.

Example 3

As shown in fig. 14, the present embodiment is different from embodiment 1 in that: the value of the type bit NDP CMAC frame type is 2; in this embodiment, a Reserved bit Reserved in the NDP _2M Ack is used to set a request sending indication bit; the null data packet carries a media access control information frame body NDP CMAC frame body which comprises an acknowledgement/request to send indication bit Ack/RTS Indicator, and does not comprise a clear to send/contention free period End indication bit CTS/CF-End Indicator and a contention free period End/request to send indication bit CF-End/RTS; the type bit NDP CMAC frame type is represented by 3 bits B0-B2; an Uplink/Downlink Indicator bit Uplink/Downlink Indicator is represented by one bit B3; the initiator/receiver address bits TA/RA are represented by 13 bits B4-B16; the partial basic service set Address bits BSS Address are represented by 7 bits B17-B23; the channel occupancy time bit Duration is represented by 10 bits B24-B33; the Bandwidth indication bit Bandwidth Indicator is represented by 2 bits B34-B35; the acknowledgement/request to send indication bit Ack/RTS Indicator is represented by one bit B36.

As shown below, Table 5 is a table of the differences between NDP _2M RTS and NDP _2M Ack in accordance with an embodiment of the present invention.

NDP CMAC frame type value	Ack/RTS Indicator	Meaning
			0	0	NDP_2M Ack
0	1	NDP_2M RTS

TABLE 5

As shown in table 5, in the present embodiment, when the ACK/RTS Indicator is 0, the NDP _2M frame structure represents an NDP ACK; the NDP _2M frame structure represents an NDP _2M RTS when an ACK/RTS Indicator is 1.

The present embodiment further provides a wireless communication method, which generates an NDP _2M RTS frame structure including a short training frame STF, a long training frame LTF, and a signal frame SIG; sending the NDP _2M RTS frame structure; generating the NDP _2M RTS frame structure further comprises determining control information for distinguishing NDP _2M RTS from NDP _2M ACK; including control information in a null data packet carrying medium access control information frame body, NDP CMAC frame body; and setting an acknowledgement/request-to-send indication bit ACK/RTS Indicator for indicating that NDP _2M RTS is requested to be sent in a frame body NDP CMAC of the null data packet carrying media access control information frame body NDP.

Example 4

As shown in fig. 15, the present embodiment is different from embodiment 1 in that: the value of the type bit NDP CMAC frame type is 3; in this embodiment, a Reserved bit Reserved in an NDP _2M PS-Poll-Ack is used to set a request sending indication bit; the null data packet carries a media access control information frame body NDP CMAC frame body, which comprises an energy-saving inquiry confirmation/request sending indication bit PS-Poll-Ack/RTS Indicator, and does not comprise a clear sending/contention-free period End indication bit CTS/CF-End Indicator and a contention-free period End/request sending indication bit CF-End/RTS; the type bit NDP CMAC frame type is represented by 3 bits B0-B2; an Uplink/Downlink Indicator bit Uplink/Downlink Indicator is represented by one bit B3; the initiator/receiver address bits TA/RA are represented by 13 bits B4-B16; the partial basic service set Address bits BSS Address are represented by 7 bits B17-B23; the channel occupancy time bit Duration is represented by 10 bits B24-B33; the Bandwidth indication bit Bandwidth Indicator is represented by 2 bits B34-B35; the power-saving inquiry acknowledgment/request-to-send indication bit PS-Poll-Ack/RTS Indicator is represented by one bit B36.

As shown below, Table 6 is a table of the differences between NDP _2M RTS and NDP _2M PS-Poll-Ack in the examples of the present invention.

NDP CMAC frame type value	PS-Poll-Ack/RTS Indicator	Meaning
			0	0	NDP_2M PS-Poll-Ack
0	1	NDP_2M RTS

TABLE 6

As shown in table 6, in the present embodiment, when the power saving inquiry confirm/request to send indication bit PS-Poll-Ack/RTS Indicator is 0, the NDP _2M frame structure indicates an NDP PS-Poll-Ack; the NDP _2M frame structure represents an NDP _2M RTS when a power saving inquiry confirm/request transmission indication bit PS-Poll-Ack/RTS Indicator is 1.

The present embodiment further provides a wireless communication method, which generates an NDP _2M RTS frame structure including a short training frame STF, a long training frame LTF, and a signal frame SIG; sending the NDP _2M RTS frame structure; generating the NDP _2M RTS frame structure further comprises determining control information for distinguishing the NDP _2M RTS from the PS-Poll-Ack; including control information in a null data packet carrying medium access control information frame body, NDP CMAC frame body; and setting a power-saving inquiry confirmation/request sending indication bit PS-Poll-Ack/RTS Indicator for indicating that NDP-2M RTS is requested to be sent in a frame body NDP CMAC frame carried by the null data packet.

Example 5

As shown in fig. 16, the present embodiment is different from embodiment 1 in that: the value of the type bit NDP CMAC frame type is 5; in this embodiment, a Reserved bit Reserved in the NDP _2M Beamforming Report Poll is used to set a request sending indication bit; the null data packet carries a media access control information frame body NDP CMAC frame body, which comprises a Beamforming Report inquiry/request sending indication bit Beamforming Report Poll/RTS Indicator, and does not comprise a clear sending/contention free period End indication bit CTS/CF-End Indicator and a contention free period End/request sending indication bit CF-End/RTS; the type bit NDP CMAC frame type is represented by 3 bits B0-B2; an Uplink/Downlink Indicator bit Uplink/Downlink Indicator is represented by one bit B3; the initiator/receiver address bits TA/RA are represented by 13 bits B4-B16; the partial basic service set Address bits BSS Address are represented by 7 bits B17-B23; the channel occupancy time bit Duration is represented by 10 bits B24-B33; the Bandwidth indication bit Bandwidth Indicator is represented by 2 bits B34-B35; the Beamforming Report query/request to send indication bit beamforrning Report Poll/RTS Indicator is represented by one bit B36.

As shown below, Table 7 is a table of the differences between the five NDP _2M RTS and NDP _2M Beamforming Report Poll embodiments of the present invention.

TABLE 7

As shown in table 7, in the present embodiment, when a Beamforming Report query/request transmission indication bit beamforrning Report Poll/RTS Indicator is 0, the NDP _2M RTS frame structure represents an NDP Beamforming Report Poll/RTS Indicator; the NDP _2M RTS frame structure represents an NDP _2M RTS when a Beamforming Report query/request transmission indication bit Beamforming Report Poll/RTS Indicator is 1.

The present embodiment further provides a wireless communication method, which generates an NDP _2M RTS frame structure including a short training frame STF, a long training frame LTF, and a signal frame SIG; sending the NDP _2M RTS frame structure; generating the NDP _2M RTS frame structure further comprises determining control information for distinguishing the NDP _2M RTS from the Beamforming Report Poll; including control information in a null data packet carrying medium access control information frame body, NDP CMAC frame body; and setting a Beamforming Report inquiry/request sending indication bit Beamforming Report Poll/RTS Indicator for indicating that the NDP _2M RTS is requested to be sent in a frame body NDP CMAC frame carried by the null data packet.

Example 6

As shown in fig. 17, the present embodiment is different from embodiment 1 in that: the value of the type bit NDP CMAC frame type is 6; in this embodiment, a Reserved bit Reserved in NDP _2M Paging is used to set a request sending indication bit; the null data packet carries a media access control information frame body NDP CMAC frame body, which comprises a Paging/request sending indication bit Paging/RTS Indicator, and does not comprise a clear sending/contention free period ending indication bit CTS/CF-End Indicator and a contention free period ending/request sending indication bit CF-END/RTS; the type bit NDP CMAC frame type is represented by 3 bits B0-B2; an Uplink/Downlink Indicator bit Uplink/Downlink Indicator is represented by one bit B3; the initiator/receiver address bits TA/RA are represented by 13 bits B4-B16; the partial basic service set Address bits BSS Address are represented by 7 bits B17-B23; the channel occupancy time bit Duration is represented by 10 bits B24-B33; the Bandwidth indication bit Bandwidth Indicator is represented by 2 bits B34-B35; the Paging/request to send indication bit Paging/RTS Indicator is represented by one bit B36.

As shown below, Table 8 is a table of the differences between six NDP _2M RTS and NDP _2M Paging embodiments of the present invention.

NDP CMAC frame type value	Paging/RTS Indicator	Meaning
			0	0	NDP_2M Paging
0	1	NDP_2M RTS

TABLE 8

As shown in table 8, in the present embodiment, when the Paging/request transmission indication bit Paging/RTS Indicator is 0, the NDP _2M RTS frame structure represents the NDP Paging/RTS Indicator; the NDP _2M RTS frame structure represents an NDP _2M RTS when a Paging/request transmission indication bit Paging/RTS Indicator is 1.

The present embodiment further provides a wireless communication method, which generates an NDP _2M RTS frame structure including a short training frame STF, a long training frame LTF, and a signal frame SIG; sending the NDP _2M RTS frame structure; generating the NDP _2M RTS frame structure further comprises determining control information for distinguishing NDP _2M RTS from Paging; including control information in a null data packet carrying medium access control information frame body, NDP CMAC frame body; and setting a Paging/request sending indication bit Paging/RTS Indicator for indicating that NDP _2M RTS is requested to be sent in a frame body NDP CMAC of the null data packet carrying media access control information frame body NDP.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. A method of wireless communication, characterized by: generating an NDP _2M RTS frame structure comprising a Short Training Frame (STF), a Long Training Frame (LTF) and a signal frame (SIG); sending the NDP _2M RTS frame structure;

generating the NDP _2M RTS frame structure further includes determining control information for distinguishing NDP _2M RTS from NDP _2M CTS, NDP 2M CF-End, NDP 2M PS-Poll, NDP 2M Ack, NDP 2M PS-Poll-Ack, NDP _2MBlockack, NDP _2M Beamforming Report Poll, NDP _2MPaging, and NDP _2M Request; including control information in a null data packet carrying medium access control information frame body, NDP CMAC frame body; setting a request sending indication bit for indicating that NDP _2M RTS is requested to be sent in the empty data packet carrying a media access control information frame body NDP CMAC frame body;

the request sending indication bit consists of 1 bit, and distinguishes NDP _2M RTS from NDP _2M Ack, NDP _2M PS-Poll-Ack, NDP _2M Beamforming Report Poll and NDP _2M Paging, and the Partial basic service set address indication bit Partial BSSID consists of 7 bits and is used for indicating a basic service set address; or, the request sending indication bit is composed of 2 bits, one bit distinguishes between NDP _2M CTS and NDP _2M CF-End, the other bit distinguishes between NDP _2M RTS and NDP _2M CTS, and between NDP _2MCF-End, and the Partial basic service set address indication bit Partial BSSID is composed of 6 bits and is used for indicating a basic service set address.

2. The wireless communication method according to claim 1, wherein: the value of the type bit NDP CMAC frame type is 0; the request transmission indication bit includes a clear to send/contention free period End indication bit CTS/CF-End Indicator and a contention free period End/request to send indication bit CF-End/RTS Indicator; the CTS/CF-End Indicator consists of one bit, and distinguishes between an NDP _2M CTS and an NDP _2M CF-End; the contention-free period End/request transmission indication bit CF-End/RTS Indicator is composed of one bit, and distinguishes NDP _2M CF-End from NDP _2M RTS.

3. The wireless communication method according to claim 2, wherein: the type bit NDP CMAC frame type consists of B0, B1 and B2; the CTS/CF-End Indicator consists of B3; the Uplink/Downlink Indicator bit Uplink/Downlink Indicator consists of a bit B4; the transmitting terminal/receiving terminal address bit TA/RA is composed of B5 and B6 … … B17; the Partial basic service set address indication bits Partial BSSID are comprised of B18, B19 … … B23; the channel occupation time bit Duration consists of B24 and B25 … … B33; the Bandwidth indication bit Bandwidth Indicator consists of B34 and B35; the contention-free period End/request transmission indication bit CF-End/RTS Indicator is composed of B36.

4. The wireless communication method according to claim 1, wherein: the value of the type bit NDP CMAC frame type is 0; the request transmission indication bit includes a clear to send/contention free period End indication bit CTS/CF-End Indicator and a clear to send/request to send indication bit CTS/RTS Indicator; the CTS/CF-End Indicator consists of one bit, and distinguishes between an NDP _2M CTS and an NDP _2M CF-End; the clear to send/request to send indication bit CTS/RTS Indicator is composed of one bit, and distinguishes between an NDP _2M CTS and an NDP _2M RTS.

5. The wireless communication method according to claim 4, wherein: the type bit NDP CMAC frame type consists of B0, B1 and B2; the CTS/CF-End Indicator consists of B3; the Uplink/Downlink Indicator bit Uplink/Downlink Indicator consists of a bit B4; the transmitting terminal/receiving terminal address bit TA/RA is composed of B5 and B6 … … B17; the Partial basic service set address indication bits Partial BSSID are comprised of B18, B19 … … B23; the channel occupation time bit Duration consists of B24 and B25 … … B33; the Bandwidth indication bit Bandwidth Indicator is represented by B34, B35; the clear to send/request to send indication bit CTS/RTS Indicator is composed of B36.

6. The wireless communication method according to claim 1, wherein: the value of the type bit NDP CMAC frame type is 2; the request transmission indication bit comprises an acknowledgement/request transmission indication bit Ack/RTS Indicator; the Ack/RTS Indicator consists of one bit, and distinguishes the NDP _2M RTS from the NDP _2M Ack.

7. The wireless communication method according to claim 6, wherein: the type bit NDP CMAC frame type consists of B0, B1 and B2; the Uplink/Downlink Indicator bit Uplink/Downlink Indicator consists of a bit B3; the transmitting terminal/receiving terminal address bit TA/RA is composed of B4 and B6 … … B16; the Partial basic service set address indication bits Partial BSSID are comprised of B17, B19 … … B23; the channel occupation time bit Duration consists of B24 and B25 … … B33; the Bandwidth indication bit Bandwidth Indicator is represented by B34, B35; the Ack/RTS Indicator bit Ack/RTS Indicator is composed of B36.

8. The wireless communication method according to claim 1, wherein: the value of the type bit NDP CMAC frame type is 3; the request sending indication bit comprises a power saving inquiry confirmation/request sending indication bit PS-Poll-Ack/RTS Indicator; the power-saving inquiry acknowledgement/request transmission indication bit PS-Poll-Ack/RTS Indicator is composed of one bit, and distinguishes between NDP _2M RTS and NDP _2M PS-Poll-Ack.

9. The wireless communication method according to claim 8, wherein: the type bit NDP CMAC frame type consists of B0, B1 and B2; the Uplink/Downlink Indicator bit Uplink/Downlink Indicator consists of a bit B3; the transmitting terminal/receiving terminal address bit TA/RA is composed of B4 and B6 … … B16; the Partial basic service set address indication bits Partial BSSID are comprised of B17, B19 … … B23; the channel occupation time bit Duration consists of B24 and B25 … … B33; the Bandwidth indication bit Bandwidth Indicator is represented by B34, B35; the power-saving inquiry acknowledgement/request-to-send indication bit PS-Poll-Ack/RTS Indicator is composed of B36.

10. The wireless communication method according to claim 1, wherein: the value of the type bit NDP CMAC frame type is 5; the request to send indication bit comprises a Beamforming Report query/request to send indication bit beamform Poll/RTS Indicator; the Beamforming Report query/request to send indication bit Beamforming Report Poll/RTS Indicator is composed of one bit, and distinguishes NDP _2M RTS from NDP _2M Beamforming Report Poll.

11. The wireless communication method according to claim 10, wherein: the type bit NDP CMAC frame type consists of B0, B1 and B2; the Uplink/Downlink Indicator bit Uplink/Downlink Indicator consists of a bit B3; the transmitting terminal/receiving terminal address bit TA/RA is composed of B4 and B6 … … B16; the Partial basic service set address indication bits Partial BSSID are comprised of B17, B19 … … B23; the channel occupation time bit Duration consists of B24 and B25 … … B33; the Bandwidth indication bit Bandwidth Indicator is represented by B34, B35; the Beamforming Report query/request to send indication bit beamforrning Report Poll/RTS Indicator is composed of B36.

12. The wireless communication method according to claim 1, wherein: the value of the type bit NDP CMAC frame type is 6; the request sending indication bit comprises a Paging/request sending indication bit Paging/RTS Indicator; the Paging/request transmission indication bit Paging/RTS Indicator is composed of one bit, and distinguishes NDP _2M RTS from NDP _2M Paging.

13. The wireless communication method according to claim 12, wherein: the type bit NDP CMAC frame type consists of B0, B1 and B2; the Uplink/Downlink Indicator bit Uplink/Downlink Indicator consists of a bit B3; the transmitting terminal/receiving terminal address bit TA/RA is composed of B4 and B6 … … B16; the Partial basic service set address indication bits Partial BSSID are comprised of B17, B19 … … B23; the channel occupation time bit Duration consists of B24 and B25 … … B33; the Bandwidth indication bit Bandwidth Indicator is represented by B34, B35; the Paging/request transmission indication bit Paging/RTS Indicator is composed of B36.