CN106656407A - Information notification method and apparatus - Google Patents

Abstract

The invention discloses an information notification method and device, comprising: a notification end sends a data frame or a control encapsulation frame containing an HTC field to a response end, wherein the HTC field carries notification information and type indication information of the notification information, The type indication information is used to indicate that the notification information carried by the MFB/OM domain included in the HTC domain includes one of the following: link adaptation information in the current transceiver mode of the notification terminal; information about the transceiver mode to be switched to by the notification terminal; Notifying the transceiver mode information to switch to and the link adaptation information in the transceiver mode; the notification terminal receiving the wireless frame sent by the responding terminal after receiving the notification information and the type indication information. The information notification method and device disclosed in the invention can reduce the overhead caused by transmitting notification information and improve the notification speed.

Description

An information notification method and device

technical field

The present invention relates to the field of wireless communication, in particular to an information notification method and device.

Background technique

With the development of wireless local area network (WLAN, Wireless Local Area Network) technology, the sending and receiving capabilities of WLAN equipment are also continuously enhanced, for example, the number of space streams (Nss, number of space streams) that can be used continues to increase (related to the number of antennas ), available bandwidth (BW, bandwidth) is also increasing. However, more antennas and larger bandwidth may also consume more energy. Therefore, WLAN allows devices to switch between transceiver modes (OM, operating mode). For example, when there are many services, multiple antennas with large bandwidth can be used for fast For transmission, when there is less business, it can switch to a small-bandwidth single-antenna mode to reduce power consumption. These switches need to be notified by both the sender and receiver, so that the receiver can inform the sender of the conversion of its receiving mode.

In the current WLAN system, the indication of receiving mode switching needs to be sent using a special management frame or using a special transmission method. However, these individual frame exchanges will bring overhead and affect network efficiency, and individual frame exchanges will compete for channels. , an indication that the reception mode switching cannot be completed quickly due to a large delay. In addition, in the new receiving mode, the station needs to go through a separate link adaptation process to find a suitable transmission modulation and coding scheme (MCS, modulation and coding scheme) on the new link. In addition, the notification of the station's transmission mode is also exchanged through a separate management frame. In a word, the traditional indication method of transmitting and receiving mode switching will affect network efficiency and cause delay.

Contents of the invention

In order to solve the above technical problems, the present invention provides an information notification method and device, which can reduce the overhead caused by transmitting notification information and increase the notification speed.

In order to achieve the above technical purpose, the present invention provides an information notification method, comprising: the notifying end sends a data frame or a control encapsulation frame containing a high throughput control (HTC, high throughput control) domain to the responding end, wherein the HTC domain carries The notification information and the type indication information of the notification information, the type indication information is used to indicate the modulation and coding strategy feedback (MFB, modulation and coding scheme feedback)/receiver mode (OM, operating mode) field carried in the HTC field The notification information includes one of the following: link adaptation information in the current transceiver mode of the notifying end; information about the transmitting and receiving mode to be switched to by the notifying end; information about the transmitting and receiving mode to be switched to by the notifying end and link adaptation in the transmitting and receiving mode information; the notifying end receives the wireless frame sent by the responding end after receiving the notification information and the type indication information.

The present invention also provides an information notification method, including: the responding end receives the data frame or control encapsulation frame containing the HTC field sent by the notifying end, wherein the HTC field carries the notification information and the type indication information of the notification information, the The type indication information is used to indicate that the notification information carried by the MFB/OM domain included in the HTC domain includes one of the following: link adaptation information in the current transceiver mode of the notification terminal; information about the transceiver mode to be switched to by the notification terminal; Information about the transceiver mode to be switched by the terminal and link adaptation information in the transceiver mode; after receiving the notification information and type indication information, the responder sends a wireless frame to the notification terminal.

The present invention also provides an information notification device, which is applied to the notification end, including: a first sending module, configured to send a data frame or a control encapsulation frame containing an HTC field to the response end, wherein the HTC field carries the notification information and the The type indication information of the notification information, the type indication information is used to indicate that the notification information carried by the MFB/OM domain included in the HTC domain includes one of the following: link adaptation information in the current transceiver mode of the notification end; The information about the transceiver mode to be switched to; the information about the transceiver mode to be switched to by the notifying end and the link adaptation information under the transceiver mode; the first receiving mode, used to receive the notification information and type received by the responding end Indicates the radio frame sent after the message.

The present invention also provides an information notification device, which is applied to the responder, including: a second receiving module, configured to receive a data frame or a control encapsulation frame containing an HTC domain sent by the notification terminal, wherein the HTC domain carries notification information and The type indication information of the notification information, the type indication information is used to indicate that the notification information carried by the MFB/OM domain included in the HTC domain includes one of the following: link adaptation information in the current transceiver mode of the notifying end; notification Information about the transceiver mode to be switched to by the terminal; information on the transceiver mode to be switched to by the notification terminal and link adaptation information in the transceiver mode; the second sending module is configured to, after receiving the notification information and the type indication information, Send a wireless frame to the notification end.

In the present invention, the notifying end sends a data frame or a control encapsulation frame containing an HTC field to the responding end, wherein the HTC field carries notification information and type indication information of the notification information, and the type indication information is used to indicate the The notification information carried by the MFB/OM domain contained in the HTC domain includes one of the following: the link adaptation information of the notification terminal in the current transceiver mode; the information of the transceiver mode to be switched to by the notification terminal; Information about the switched transceiver mode and link adaptation information in the transceiver mode; the notifying end receives the wireless frame sent by the responding end after receiving the notification information and the type indication information. The present invention utilizes the HTC field in the frame header of the data frame or the control encapsulation frame to entrain the notification information in the sent data frame or control encapsulation frame for transmission, completes the transmission of the notification information without increasing the overhead, and avoids the use management Frames (used to transmit notification information) compete for the overhead brought by the channel alone, thereby greatly improving the speed of notification. Moreover, the notification information in the present invention is carried by the MFB/OM domain included in the HTC domain, without adding new information domains in the HTC domain of the frame header, further reducing overhead and improving efficiency.

Description of drawings

FIG. 1 is a flowchart of an information notification method provided by an embodiment of the present invention;

FIG. 2 is a flowchart of an information notification method provided by an embodiment of the present invention;

Fig. 3 is an example diagram of the HTC domain in the prior art;

FIG. 4 is a schematic diagram of the HTC domain in Embodiment 1 of the present invention;

FIG. 5 is a schematic diagram of the MFB/OM domain in Embodiment 1 of the present invention;

FIG. 6 is a schematic flow diagram of Embodiment 2 of the present invention;

Fig. 7 is a schematic flow diagram 1 of Embodiment 5 of the present invention;

FIG. 8 is a second schematic flow diagram of Embodiment 5 of the present invention.

detailed description

The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the embodiments described below are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

FIG. 1 is a flowchart of an information notification method provided by an embodiment of the present invention. As shown in Figure 1, the information notification method provided by this embodiment includes the following steps:

Step 101: The notifying end sends a data frame or control encapsulation frame containing a high throughput control (HTC, high throughput control) field to the responding end, wherein the HTC field carries notification information and type indication information of the notification information, and the The type indication information is used to indicate that the modulation and coding strategy feedback (MFB, modulation and coding scheme feedback)/receiver mode (OM, operating mode) contained in the HTC domain contains notification information including one of the following:

Notify the end of the link adaptation information in the current transceiver mode;

Information about the sending and receiving mode to be switched to by the notification end;

Information about the transceiver mode to be switched to by the notification end and link adaptation information in the transceiver mode.

Specifically, the MFB/OM domain included in the HTC domain is a notification information domain, and the MFB/OM domain has different information according to different types of indication information.

Wherein, the sending and receiving mode information includes: receiving mode information of the notifying end and/or sending parameter information of the notifying end.

Further, when the notification information carried by the HTC field includes information about the transceiver mode to be switched to by the notifying end, the data frame or the control encapsulation frame carries information on the duration of the switchover of the transceiver mode.

In an embodiment, when the type indication information indicates that the notification information carried by the HTC domain is link adaptation information in the current transceiver mode of the notifying end, the MFB/OM domain included in the HTC domain carries at least the notification information of the notifying end Link adaptation information in the current receive mode.

In one embodiment, when the type indication information indicates that the notification information carried by the HTC domain is information about the sending and receiving mode to be switched to by the notifying end, the MFB/OM domain contained in the HTC domain carries the information of the sending and receiving mode to which the notifying end is to switch. Reception mode information, where the reception mode information at least includes a new number of spatial streams (Nss, number of space stream) and a new bandwidth (BW, bandwidth).

In one embodiment, when the type indication information indicates that the notification information carried by the HTC domain is information about the transceiver mode to be switched to by the notifier and link adaptation information in the transceiver mode, the HTC domain contains The MFB/OM field carries the receiving mode information to be switched to by the notifying end and the link adaptation information in the receiving mode.

Further, the manner in which the HTC field carries the type indication information of the notification information includes one of the following:

Carry the type indication information through a reserved bit in the HTC domain;

Carry the type indication information through a reserved value of an existing information field in the HTC domain;

Carry the type indication information through the combined reserved value of at least two existing information fields in the HTC domain;

Information bits in the notification information carried by the HTC field carry type indication information of the notification information.

Further, the control encapsulation frame is an unresponsive control encapsulation frame.

Step 102: The notifying end receives the wireless frame sent by the responding end after receiving the notification information and the type indication information.

FIG. 2 is a flowchart of an information notification method provided by an embodiment of the present invention. As shown in Figure 2, the information notification method provided by this embodiment includes the following steps:

Step 201: The responder receives the data frame or control encapsulation frame containing the HTC domain sent by the notifying terminal, wherein the HTC domain carries notification information and type indication information of the notification information, and the type indication information is used to indicate the The notification information carried by the MFB/OM domain contained in the HTC domain includes one of the following: the link adaptation information of the current transceiver mode of the notification terminal; the information of the transceiver mode to be switched to by the notification terminal; Received transceiver mode information and link adaptation information in the transceiver mode.

After step 201, the method further includes: the responding end adjusts the sending mode for sending wireless frames to the notifying end according to the received type indication information and notification information. Wherein, the sending mode is a mode supported in the notification information.

Further, when the notification information includes information about the transceiver mode to be switched to by the notification terminal, the adjusting the transmission mode for sending wireless frames to the notification terminal includes: adjusting the transmission mode to the notification terminal after the time period for switching the transmission and reception mode is completed. Notifies the sender of the sending mode for sending radio frames.

Step 202: After receiving the notification information and the type indication information, the responding end sends a wireless frame to the notifying end.

Further, the wireless frame carries an explicit or implicit notification, which is used to indicate that the responding end has successfully received the notification information and type indication information.

Further, the explicit notification is carried in the HTC field of the wireless frame.

Further, the wireless frame is a data frame or a control frame, wherein the data frame includes an empty data frame, and the control frame includes an unencapsulated control frame.

The present invention will be described in detail below through multiple specific embodiments.

Embodiment one

The WLAN station can use the HTC field carried in the data frame and the control frame to perform MCS feedback, that is, the link adaptation process, wherein, the format of the HTC field is as shown in Figure 3, it should be pointed out that the figure in this embodiment It is shown as a schematic diagram, and does not limit the length and sequence of each information domain in the HTC domain. As shown in Figure 3, the traditional HTC domain includes:

One or more link adaptation auxiliary fields, such as MCS request (MRQ, modulation and coding scheme request) field, MRQ sequence identifier (MSI, modulation and codingscheme request sequence identifier) field, MCS feedback sequence identifier (MFSI, modulation and coding scheme feedback sequence identifier) field, etc.;

MCS feedback (MFB, modulation and coding scheme feedback) field, the feedback is a notification of link adaptation information;

Reserved bits, that is, unused bits;

Other domains, such as the relevant control domain for reverse transmission, the information domain used to indicate the category of the HTC domain, the category of the HTC domain includes high throughput (HT, high throughput), very high throughput (VHT, very high throughput), high Efficiency (HE, high efficiency), etc.

In this embodiment, in order to realize fast reception mode notification and/or link adaptation notification, the modified HTC domain is shown in FIG. 4 and FIG. 5 . Specifically, as shown in FIG. 4 , the modified HTC domain includes: type indication information of the MFB/OM domain and the MFB/OM domain.

Specifically, the type indication information of the MFB/OM domain is used to indicate the type of information carried by the MFB/OM domain in the HTC domain, and the type indication information can be carried in one of the following ways:

Carry the type indication information through the unused reserved bits in the HTC domain, as shown in Figure 4;

This type of indication information is carried by the reserved value of an existing information field in the HTC domain, as shown in Figure 4. For example, the MSI field has an unused reserved value. When the MSI field indicates this reserved value, it means MFB The /OM domain carries receiving mode notification information;

The type indication information is carried by the combined reserved value of multiple existing information fields in the HTC domain. For example, if both the MSI field and the MFSI field have reserved values, they can be combined to indicate the corresponding information type;

If there is no reserved value in the existing information fields of the HTC domain, but the combination of the two information fields is a combined reserved value, it can also be used to indicate this type of indication information, for example, the combination of certain values of the MRQ field, MSI field and MFSI field If this is not possible, the combination can be used to indicate the type information;

The type indication information is carried by some reserved value or value range of the MFB/OM field itself.

FIG. 5 shows three situations of the MFB/OM domain in Embodiment 1 of the present invention. The MFB/OM field carries different information according to the above-mentioned type indication information. As shown in Figure 5(a), the MFB/OM domain carries MFB information, that is, only includes link adaptation notification information; as shown in Figure 5(b), the MFB/OM domain carries transceiver mode notification information, for example, only includes receiving Mode notification information; as shown in Figure 5(c); the MFB/OM domain carries the transceiver mode to be switched to and the link adaptation information under the transceiver mode, for example, including the receiving mode notification information for notifying the new mode to be switched to The receiving mode also includes MCS feedback information, which is used to indicate the MCS feedback in the new receiving mode, wherein the new receiving mode includes at least a new number of spatial streams (Nss) and a new bandwidth (BW).

Embodiment two

In this embodiment, stations (STA, Station) 1 compete to send data to STA2, assuming that STA1 wants to switch the receiving mode from large bandwidth to small bandwidth to achieve energy saving, then STA1 carries the HTC field in the data frame sent to STA2 , and use the HTC field to notify the receiving mode switch to STA2. Assuming that the HTC domain is a high throughput (HT, high throughput) category, the specific process is shown in Figure 6:

STA1 sends a data frame containing the HT category HTC field to STA2, the HTC field contains the type indication information of the MFB/OM field, and the type indication information is carried by the reserved bit in the HTC field; for example, the type indication information field is 1 bit , when it is set to 0, it means that the MFB field of the following 7 bits indicates MCS feedback, that is, it is used for link adaptation. Replaced by notification receiving operating mode information (ROM, receiving operating mode), the receiving mode information includes space stream number (Nss, number of space stream) (3bits) and bandwidth (BW, bandwidth) (such as 2bits), other fields are reserved bits; here Assuming that the type indication field of the MFB/OM field is set to 1, STA1 notifies STA2 of receiving mode switching, the spatial stream in the subsequent receiving mode information is set to 2 spatial streams, and the bandwidth is set to 20MHz, which means that after notification to STA2, if If STA2 wants to send data to STA1 in the future, the sending bandwidth cannot be greater than 20MHz, and the number of sending streams cannot be greater than 2;

STA2 receives the above-mentioned data frame containing the HTC field and receives the receiving mode notification information in it, then sends the response frame of the data frame to STA1, indicating that the notification has been received, that is, it is embedded in the response frame to implicitly indicate that it has been received For this notification, as long as STA1 receives the response frame from STA2, it means that the above reception mode notification has been correctly received.

In addition, if STA2 wants to send data to STA1 next, its sending bandwidth cannot be greater than 20 MHz, and the number of sending streams cannot be greater than 2. Since STA1 needs a period of time to switch after sending the receiving mode notification, STA2 should use the receiving mode notified by STA1 to adjust the sending mode it sends to STA1 after this period of time. This period of time can be called transceiver mode switching The completion time, which can be predefined by the protocol, or can be notified by STA1 to STA2 through the above data frame.

Embodiment three

In this embodiment, an access point (AP, Access Point) and multiple STAs form a network, in which STA1 competes to send data to the AP, assuming that STA1 wants to switch the receiving mode from a large bandwidth to a small bandwidth to achieve energy saving, And want to inform the AP of the link adaptation information on the small bandwidth, that is, the MCS feedback information, then STA1 carries the HTC field in the data frame sent to the AP to complete the above notification to the AP. Assuming that the HTC domain is a VHT category, the specific process is as follows:

STA1 sends a data frame containing a very high throughput (VHT, very high throughput) category HTC field to the AP, and the HTC field contains type indication information of the MFB/OM field, and the information passes the reserved value in the MSI field in the HTC field To indicate; when the MSI field is set to a defined value, it means that the MFB field of the following 15 bits performs information indication according to the existing protocol, such as for link adaptation, including: the current number of spatial streams Nss (3bits), the current bandwidth BW (2bits), the recommended MCS (4bits) in the current receiving mode and the signal-to-noise ratio (SNR, signal-to-noiseratio) information (6bits) in the current mode; when the MSI field is set to a reserved value, it means the following 15bits The MFB field is used to notify the reception mode switching and the link adaptation information in the new reception mode, including: the new reception mode (number of spatial streams Nss, bandwidth BW) and the link adaptation information in the new mode (recommended MCS, SNR information); Here, it is assumed that the MSI is set to a reserved value, STA1 notifies the receiving mode to switch to the AP, and notifies the link adaptation information, assuming that the spatial stream in the receiving mode notification information is set to 1 spatial stream, and the bandwidth is set to 20MHz, MCS is 5, and SNR is 15dB, which means that after notifying the AP, if the AP wants to send data to STA1 in the future, the sending bandwidth cannot be greater than 20MHz, and the number of sending streams cannot be greater than 1. It is recommended that the AP use MCS 5 to send data;

AP receives the above-mentioned data frame containing the HTC field, and receives the reception mode/link adaptation notification information in it, then sends the response frame of the data frame to STA1, indicating that the notification is received, that is, the hidden information contained in the response frame The description of the formula has received the notification, and as long as STA1 receives the response frame from the AP, it means that the above notification has been correctly received.

In addition, STA1 may only notify the reception mode switching without notifying the link adaptation information. For example, set the MSI as a reserved value in the same way, the following MFB/OM field contains the receiving mode and link adaptation notification information, but set the link adaptation information (recommended MCS, SNR information) as a reserved value or a specific value (For example, MCS is set to a reserved value, or MCS is set to the maximum MCS, and SNR is set to a specific value such as the lowest SNR), indicating that the contents of the MCS field and the SNR field are invalid, that is, link adaptation information is not included.

In addition, it should be noted that the present invention does not limit the category of the HTC domain. In addition to the HT category or the VHT category, there may be other variants in the future, such as the high efficiency (HE, high efficiency) category or other categories defined in the future. The idea defined in the present invention can be used to send reception mode/link adaptation notification information using the HTC field.

Embodiment Four

In this embodiment, the type indication information is carried by the MFB/OM field itself.

For example, for the HTC domain of the HT category, the MFB/OM domain reuses the original MFB domain (7bits), then 802.11n defines 77 types of MCS, with index numbers ranging from 0 to 76, and values greater than 76 can be considered meaningless value, the following methods can be used to complete the indication of the MFB/OM field and its type:

When the value of the 7bits information field is 0 to 76, it means that the field is an MFB field, which carries link adaptation notification information; when the two highest bits of this field are both 1 (at this time, the value of 7bits is greater than or equal to 96), it means that the lower 5bits of this field carry the receiving mode notification information, specifically, including the bandwidth BW (2bits) and Nss (3bits) in the receiving mode, so that the value range of the MFB/OM subfield automatically Complete type indication.

For another example, for the HTC domain of the VHT category, the MFB/OM domain reuses the original MFB domain (15 bits, including 2 bits of BW, 3 bits of Nss, 4 bits of MCS, and 6 bits of SNR), then 802.11ac defines 10 types of MCS, If the value in the MCS field exceeds 9, it is a reserved value, and the indication of the MFB/OM subfield and its type can be completed in the following ways:

Method 1: Set the value of MCS or SNR as a reserved value. For example, if MCS is set to 15, it means that the BW and Nss domains are receiving mode notification information, and the new receiving bandwidth and the number of spatial streams are notified;

Method 2: Setting the MCS and SNR to specific values is used to indicate that the BW and Nss fields are receiving mode notification information.

Embodiment five

This embodiment is used to describe the notification of the receiving mode/link adaptation information by using the control encapsulation frame.

Control frames and management frames themselves cannot carry the HTC domain, but WLAN allows the control frame to be encapsulated, that is, it becomes a control wrapper frame (Control Wrapper Frame), which can carry the HTC domain. Since the control frame is generally shorter than the data frame, there are It is beneficial to complete fast frame exchange and information transmission.

For example, the AP competes to send a data frame to STA1, and STA1 sends a control frame acknowledgment (ACK) frame or a block acknowledgment (Block ACK) frame to the AP. Assume that STA1 wants to change the receiving mode and notify the AP, but since this data transmission is initiated by the AP, STA1 is generally not allowed to send data frames during this transmission opportunity, and only allowed to send control frames to respond. At this time, STA1 can choose The control encapsulation frame encapsulates the response frame to carry the HTC field, so as to complete the reception mode/link adaptation information notification.

Specifically, as shown in FIG. 7 , the AP sends data frame 1 to STA1, and STA1 sends a control-encapsulated ACK frame to the AP, wherein the HTC field in the control-encapsulated ACK frame carries reception mode/link adaptation notification information. After the AP receives the ACK frame, it continues to send data frame 2 to STA1. When STA1 receives the data frame 2, it assumes that the AP has correctly received the receiving mode/link adaptation information notification; It carries an indication to inform STA1 that it has received its receiving mode/link adaptation notification information, for example, using the HTC field in data frame 2.

Or, as shown in FIG. 8, the AP sends data frame 1 to STA1, and STA1 sends a control-encapsulated ACK frame to the AP, wherein the HTC field in the control-encapsulated ACK frame carries reception mode/link adaptation notification information. Suppose the AP has only one piece of data to send to STA1, but in order to inform STA1 that it has correctly received the receiving mode/link adaptation notification information in the ACK frame, the AP can send a wireless frame to STA1 after receiving the ACK frame, explicitly Or carry information implicitly to notify STA1 that it has received its reception mode/link adaptation notification information. The above wireless frame may be a control frame, such as an ACK frame, or an empty data frame containing only a frame header.

In addition, the notifying end can also encapsulate the control frame that needs to be responded to and send it, and receive the control response frame from the responding end, and use the control frame exchange to complete the notification of the receiving mode/link adaptation information. For example, the notifying end sends a request to send (RTS, request to send) frame encapsulated in control, and the responding end replies with a clear to send (CTS, clear to send) frame.

In addition, the embodiment of the present invention also provides an information notification device, which is applied to the notification end, including: a first sending module, configured to send a data frame or a control encapsulation frame containing the HTC field to the response end, wherein the HTC field carries The notification information and the type indication information of the notification information, the type indication information is used to indicate that the notification information carried by the MFB/OM domain contained in the HTC domain includes one of the following: the link in the current transceiver mode of the notification terminal Adaptation information; information about the transceiver mode to be switched to by the notification end; information about the transceiver mode to be switched to by the notification end and link adaptation information in the transceiver mode; a first receiving mode for receiving the response The wireless frame sent by the terminal after receiving the notification information and the type indication information.

Further, the manner in which the HTC field carries the type indication information of the notification information includes one of the following:

Carry the type indication information through a reserved bit in the HTC domain;

Carry the type indication information through a reserved value of an existing information field in the HTC domain;

Carry the type indication information through the combined reserved value of at least two existing information fields in the HTC domain;

The information bits in the notification information carried by the HTC field carry the type indication information of the notification information.

In addition, the embodiment of the present invention also provides an information notification device, which is applied to the responder, including: a second receiving module, configured to receive a data frame or a control encapsulation frame containing an HTC domain sent by the notification terminal, wherein the HTC domain Carry notification information and type indication information of the notification information, the type indication information is used to indicate that the notification information carried by the MFB/OM domain included in the HTC domain includes one of the following: road adaptation information; the information on the transceiver mode to be switched to by the notification end; the information on the transceiver mode to be switched to by the notification end and the link adaptation information in the transceiver mode; the second sending module is used for receiving After the notification information and the type indication information, send a wireless frame to the notification terminal.

Further, the above device further includes: a processing module, configured to adjust a sending mode for sending wireless frames to the notifying end according to the received type indication information and notification information.

In addition, the specific processing flow of the above-mentioned device is the same as that of the above-mentioned method, so it will not be repeated here.

In practical applications, the first sending module and the second sending module are, for example, communication elements such as a transmitter with information transmitting capabilities, and the first receiving module and the second receiving module are, for example, receivers and other communication components with information receiving capabilities. A communication element, the processing module is, for example, an element with information processing capabilities such as a processor. However, the present invention is not limited thereto.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. The present invention is not limited by the above-mentioned embodiments, and what described in the above-mentioned embodiments and the description only illustrates the principle of the present invention, and without departing from the spirit and scope of the present invention, the present invention also has various changes and improvements, these changes All modifications and improvements are within the scope of the claimed invention.

Claims (18)

1. a kind of information notice method, it is characterised in that include：

Notify that end sends handle up comprising the height Frame or control encapsulated frame that control HTC domains to responder, Wherein, the HTC domains carry the type indication information of announcement information and the announcement information, the class Type configured information is used to indicate the modulation and coding strategy feedback MFB/ transmitting-receiving moulds that the HTC domains include The announcement information that formula OM domain carries includes one below：Link under the current transceiver mode in the notice end Adaptive information；The notice end transceiver mode information to be switched to；What the notice end to be switched to Link circuit self-adapting information under transceiver mode information and the transceiver mode；

The notice end receives the responder and sends out after the announcement information and type indication information is received The radio frames sent.

2. the method for claim 1, it is characterised in that the transceiver mode information includes： The reception pattern information at the notice end and/or the transmission parameter information at the notice end.

3. the method for claim 1, it is characterised in that when the HTC domains carry it is logical When knowing that information includes the notice end transceiver mode information to be switched to, the Frame or control are encapsulated Frame carries transceiver mode switching and completes duration information.

4. the method for claim 1, it is characterised in that when the type indication information is indicated The announcement information that the HTC domains carry is the link circuit self-adapting letter under the current transceiver mode in the notice end During breath, the MFB/OM domains that the HTC domains include at least are carried under the current reception pattern in the notice end Link circuit self-adapting information.

5. the method for claim 1, it is characterised in that when the type indication information is indicated When the announcement information that the HTC domains carry is the notice end transceiver mode information to be switched to, institute State the MFB/OM domains carrying notice end reception pattern information to be switched to that HTC domains include, institute Stating reception pattern information at least includes new spatial stream number Nss and new bandwidth BW.

6. the method for claim 1, it is characterised in that when the type indication information is indicated The announcement information that the HTC domains carry is the transceiver mode information that the notice end to be switched to and is somebody's turn to do During link circuit self-adapting information under transceiver mode, the MFB/OM domains that the HTC domains include carry described Notify the reception pattern information to be switched to of end and the link circuit self-adapting information under the reception pattern.

7. the method for claim 1, it is characterised in that the HTC domains carry described logical Knowing the carrying mode of the type indication information of information includes one below：

The type indication information is carried by the reserved bit in HTC domains；

The type indication information is carried by the retention of an existing information field in HTC domains；

The type is carried by the combination retention of existing at least two information field in HTC domains to indicate Information；

The class of the announcement information is carried by the information bit in the announcement information that HTC domains carry Type configured information.

8. the method for claim 1, it is characterised in that the encapsulated frame that controls is without response Control encapsulated frame.

9. a kind of information notice method, it is characterised in that include：

Responder receives the Frame comprising HTC domains or control encapsulated frame for notifying that end sends, wherein, The HTC domains carry the type indication information of announcement information and the announcement information, and the type refers to Show information for indicating that the announcement information that the MFB/OM domains that the HTC domains include carry is included with purgation One：Link circuit self-adapting information under the current transceiver mode in the notice end；What the notice end to be switched to Transceiver mode information；Chain under transceiver mode information that the notice end to be switched to and the transceiver mode Road adaptive information；

The responder sends radio frames to institute after the announcement information and type indication information is received State notice end.

10. method as claimed in claim 9, it is characterised in that the radio frames carry explicit or hidden Formula is notified, for showing that the responder is successfully received the announcement information and type indication information.

11. methods as claimed in claim 10, it is characterised in that the explicit notification is by the nothing The HTC domains of line frame carry.

12. methods as claimed in claim 9, it is characterised in that the radio frames are Frame or control Frame processed, wherein, the Frame includes empty Frame, and the control frame includes unencapsulated control frame.

13. methods as claimed in claim 9, it is characterised in that the responder is received and notifies that end is sent out After the Frame comprising HTC domains for sending or control encapsulated frame, also include：The responder is according to connecing The type indication information for receiving and announcement information, adjust the transmission mould that radio frames are sent to the notice end Formula.

14. methods as claimed in claim 13, it is characterised in that when the announcement information includes institute When stating the notice end transceiver mode information to be switched to, the adjustment to the notice end sends radio frames Sending mode, including：Adjust to the notice end after transceiver mode switching completes duration and send wireless The sending mode of frame.

A kind of 15. information notification apparatus, are applied to notify end, it is characterised in that include：

First sending module, for sending the Frame comprising HTC domains or control encapsulated frame to responder, Wherein, the HTC domains carry the type indication information of announcement information and the announcement information, described Type indication information is used to indicate that the announcement information that the MFB/OM domains that the HTC domains include carry includes One below：Link circuit self-adapting information under the current transceiver mode in the notice end；The notice end will cut The transceiver mode information changed to；Transceiver mode information and the transceiver mode that the notice end to be switched to Under link circuit self-adapting information；

First reception pattern, for receiving the responder announcement information and type instruction letter are being received The radio frames sent after breath.

16. devices as claimed in claim 15, it is characterised in that the HTC domains carry described logical Knowing the carrying mode of the type indication information of information includes one below：

The type indication information is carried by the reserved bit in HTC domains；

The type indication information is carried by the retention of an existing information field in HTC domains；

The type is carried by the combination retention of existing at least two information field in HTC domains to indicate Information；

The class of the announcement information is carried by the information bit in the announcement information that HTC domains carry Type configured information.

A kind of 17. information notification apparatus, are applied to responder, it is characterised in that include：

Second receiver module, for receiving the Frame comprising HTC domains or control envelope that notify that end sends Binding and layout, wherein, the HTC domains carry the type indication information of announcement information and the announcement information, The type indication information is used to indicate the announcement information that the MFB/OM domains that the HTC domains include carry Including one below：Link circuit self-adapting information under the current transceiver mode in the notice end；The notice end The transceiver mode information to be switched to；Transceiver mode information and the transmitting-receiving that the notice end to be switched to Link circuit self-adapting information under pattern；

Second sending module, for after the announcement information and type indication information is received, sending nothing Line frame gives the notice end.

18. devices as claimed in claim 17, it is characterised in that also include：Processing module, uses According to the type indication information and announcement information for receiving, adjust to the notice end and send radio frames Sending mode.