CN108028836A - Data transmission method, data reception confirmation method and device - Google Patents

Abstract

The invention discloses a data sending method, a data receiving confirmation method and a data receiving confirmation device, which are used for solving the problems of high transmission overhead and difficult confirmation of a receiving end under the condition that an MPDU (inter-digital protocol data packet) containing a plurality of TIDs (TIDs) and/or a part of MPDUs contained in the A-MPDU are fragmented. The data sending method comprises the following steps: the method comprises the steps that a sending end respectively configures the temporary sequence number of each media access control protocol data unit (MPDU) contained in an aggregated media access control protocol data unit (A-MPDU), wherein the temporary sequence numbers of any two MPDUs contained in the A-MPDU are different, wherein the stream identification TIDs of at least two MPDUs in the A-MPDU are different, and/or at least one MPDU contains fragments; and the sending end sends the A-MPDU after the temporary sequence number is configured.

Description

Data transmission method, data reception confirmation method and device technical field

The present invention relates to the field of communication technologies, in particular to a data sending method, a data receiving confirmation method and a device.

Background technique

In a Wireless Local Area Network (WLAN) based on Wireless Fidelity (WiFi), the receiver usually uses Block Acknowledge (BA) frames to pair one or more Aggregate MPDUs (Aggregate MPDUs) from the sender. , A-MPDU; MPDU: MAC Protocol Data Unit, MAC protocol data unit; MAC: Medium Access Control, media access control) for confirmation.

A-MPDU is a MAC layer aggregation transmission mechanism proposed in 802.11n, and has been widely used in 802.11ac. Before that, only one MPDU was contained in each frame. In A-MPDU, multiple MPDUs can be included, and each MPDU can belong to different frame types, and can also have different source addresses (Source Address, SA) or destination addresses (Destination Address, DA), but all MPDUs have the same The receiving address, that is, all MPDUs in an A-MPDU are sent to the same receiving device, but the possibility that multiple MPDUs of the same A-MPDU are sent to different receiving devices is not excluded. At the same time, all MPDUs in the same A-MPDU have the same traffic identifier (Traffic Identifier, TID), that is, all MPDUs belong to the same traffic (Traffic). Compared with the transmission method of sending multiple frames and each frame contains one MPDU, A-MPDU reduces the inter-frame interval, channel contention time and repeated transmission of physical headers, so it can effectively improve transmission efficiency.

When the receiving end receives an A-MPDU that is sent to itself and requires immediate confirmation, that is, when the Ack policy in the MPDU is set to an implicit block confirmation request (implicit BAR), it will reply a block confirmation to the sending end (Block Ack, BA) frame, a block acknowledgment bit table (BA Bitmap) is included in the BA frame, and each bit of the BA Bitmap corresponds to an MPDU in the A-MPDU. due to a A-MPDU allows up to 64 MPDUs to be aggregated, so the length of BA Bitmap is fixed at 64 bits. There are many variants of the specific design of the BA frame. As shown in Figure 1, between the A-MPDU and the BA frame, the sender may also need to send a block acknowledgment request (Block Acknowledge Request, BAR) frame, that is, the sender requires the receiver to confirm certain MPDUs. In this case, the Ack policy in the MPDU is set to BA. At this time, the receiving end will only reply to the BA frame when it receives the BAR frame from the sending end, instead of replying to the BA frame immediately after receiving the A-MPDU, that is, the sending end needs to send BAR frame to trigger the receiver to reply with BA frame.

In another case, as shown in Figure 2, the receiving end receives multiple A-MPDUs sent by the sending end. Different A-MPDUs may have different TIDs, and then the receiving end sends a BA frame for confirmation. The frame contains multiple 64-bit BA Bitmap, each BA Bitmap corresponds to a TID, this BA frame is called multi-TID BA.

In 802.11ax, the next-generation standard of 802.11ac, due to the introduction of the uplink (Uplink, UL) multi-user (Multiple User, MU) transmission mechanism, including UL OFDMA and UL MU-MIMO, the access point (Access Point, AP) will The transmission frames of multiple stations (Stations, STAs) are received at the same time, and the transmission frames of each STA include an A-MPDU. According to the resolution passed by the current standard meeting, the AP needs to send a multi-STA BA frame (M-BA for short) to reply confirmation information to multiple STAs. Specifically, the multi-STA BA frame adopts a structure similar to the multi-TID BA in existing standards.

Figure 3 is a structural diagram of a multi-STA BA frame. The multi-STA BA frame contains multiple block confirmation information (BA Information, referred to as BA Info), each BA Information corresponds to a STA, and the STA’s identification AID contains In the first 11bits (B0~B10) of the first field Per TID Info (called: per TID information) of each BA Info. In addition, an ACK/BA indication is also introduced. When the ACK/BA indication is set to BA, there are Block Ack Starting Sequence Control (Block Ack Starting Sequence Control) domain and BA Bitmap domain after the Per TID Info domain; when ACK/BA The indication is set to ACK, and there is no Block Ack Starting Sequence Control and BA Bitmap field after the Per TID Info field, that is, the current BA Information only contains Per TID Info. The ACK/BA indication is set to ACK in two cases: the A-MPDU received by the device contains only one MPDU and the receiver correctly decodes the MPDU, or the A-MPDU received by the device contains Contains multiple MPDUs and the receiver correctly decodes all MPDUs in the A-MPDU. In the case of receiving all MPDUs correctly, there is no need to indicate whether each MPDU is received correctly, so the Block Ack Starting Sequence Control and BA Bitmap fields can be omitted, thereby achieving the purpose of saving transmission overhead. The multi-STA BA frame also includes a frame check sequence (Frame Check Sequence, FCS) field, a duration/identification (Duration/ID) field, a receiving address (Receiving Address, RA) field, and a sending address (Transmitting Address, TA) area.

In 802.11ax, a recent document proposed that in order to further improve the efficiency of multi-user transmission, MPDUs containing multiple TIDs should be allowed in the same A-MPDU. We call this A-MPDU multi-TID A-MPDU. Figure 4a is a schematic diagram of the structure of the multi-TID A-MPDU. If the amount of data to be transmitted by STA2 is much larger than that of other STAs, other STAs have to fill in many redundant bits during transmission. In Figure 4a, "()" The number in the subframe indicates the sequence number (Sequence Number, SN) of the MPDU contained in the subframe, the VO subframe indicates the video (Video) subframe, and the VI subframe indicates the voice (Voice) subframe, wherein, a subframe includes the MPDU fixed Delimiter, MPDU, and padding byte (PAD), the length of the padding byte is usually 0 to 3 bytes, and the purpose of the padding byte is to make the length of the subframe an integer multiple of 4 bytes. However, if the A-MPDU is allowed to contain multiple TID data, as shown in Figure 4b, MPDUs with different TIDs can be aggregated and transmitted in the same A-MPDU, so that only a small amount of redundant bit filling is required, thereby improving efficiency. In Figure 4b, the BE subframe represents a Best Effort subframe, and the BK subframe represents a background (Background) subframe. Among them, the VO subframe, that is, the TID of the MPDU contained in the subframe is VO, the VI subframe, that is, the TID of the MPDU contained in the subframe is VI, the BE subframe, that is, the TID of the MPDU contained in the subframe is BE, and the BK subframe That is, the TID of the MPDU included in the subframe is BK.

If the receiving end receives an A-MPDU containing multiple TID data, how to confirm it is a problem to be solved.

1) DL MU transmission

The STA receives the A-MPDU addressed to itself, which contains multi-TID data, and then replies with an acknowledgment. An obvious approach is to use multi-TID BA, where each BA Info corresponds to a TID. However, this will cause a lot of waste. In the aforementioned Multi-TID BA usage scenario, each Each A-MPDU may contain 64 MPDUs, so it is worthwhile for each A-MPDU to correspond to a BA Info (12 bytes long). However, in the DL MU scenario, although the A-MPDU also contains MPDUs with multiple TIDs, the sum of these MPDUs with different TIDs does not exceed 64, that is to say, the number of MPDUs for each TID is much smaller than 64. Therefore, each TID corresponds to a BA Info is a big waste.

2) UL MU transmission

The AP receives multiple A-MPDUs sent by multiple STAs through UL MU, at least one of which contains MPDUs with multiple TIDs, and then the AP replies with an acknowledgment frame in the form of M-BA or OFDMA BA. The so-called OFDMA BA means that the AP replies with a confirmation message to each STA individually in the form of DL OFDMA. For an A-MPDU containing multiple TID MPDUs, an obvious way to reply is to use the multi-TID BA frame for confirmation. Same waste problem in DL MU. M-BA means that the AP replies with the confirmation messages of multiple STAs in one BA frame. A confirmation method that can be obtained by simple combination according to the existing technology is to extend the format of the Multi-TID BA frame , where each BA Info corresponds to an <AID, TID>, AID (Association Identifier, association identifier) is the association identifier of the STA, used to identify the STA, TID is the flow identifier, as shown in Figure 5 is a schematic diagram of the M-BA frame structure . This method has the same waste problem as the multi-TID confirmation of DL MU, because the sum of MPDUs of all TIDs corresponding to the same AID does not exceed 64. For example, in Figure 5, AID1 corresponds to TID 2 and TID 3, and AID2 corresponds to TID1 and TID3 And TID4, AID3 corresponds to TID2, each TID corresponds to a BA Info is a big waste.

It can be seen that regardless of UL MU or DL MU, when the receiving end replies to a multi-TID A-MPDU to confirm, it will be a lot of waste to use one BA Info corresponding to each TID.

In addition, if some MPDUs in an A-MPDU contain fragments and some do not, it is difficult for the receiving end to use a BA Bitmap to confirm these MPDUs and fragments at the same time, because in this case it is required that the BA Bitmap Some bits correspond to MPDUs, and some bits correspond to fragments, which is difficult to achieve in current standards. An obvious solution is to use different BA Info in the BA frame to confirm the receiving end separately. Furthermore, if the A-MPDU contains MPDUs with different TIDs, and some MPDUs also contain fragments, in this case The confirmation will face two difficulties at the same time, that is, more The waste of acknowledgment overhead caused by the MPDU of a TID and the difficulty of acknowledgment caused by mixed transmission of MPDU and fragments need to be further solved.

Contents of the invention

The embodiment of the present invention provides a data sending method, a data receiving confirmation method and a device, which are used to solve the problem that the receiving end confirms when the MPDU containing multiple TIDs and/or the part of the MPDU contained in the A-MPDU has fragments The problem of high transmission overhead and difficult confirmation.

The specific technical scheme that the embodiment of the present invention provides is as follows:

In the first aspect, a method for sending data is provided, including:

The sending end separately configures the temporary sequence number of each MPDU contained in the aggregated medium access control protocol data unit A-MPDU, and the temporary sequence numbers of any two MPDUs contained in the A-MPDU are different from each other. The same, wherein at least two MPDUs in the A-MPDU have different flow identifier TIDs, and/or at least one MPDU contains fragments;

The sending end sends the A-MPDU configured with a temporary sequence number.

With reference to the first aspect, in a first possible implementation manner, the sending end respectively configures the temporary sequence number of each media access control protocol data unit MPDU included in the aggregated media access control protocol data unit A-MPDU, include:

The sending end carries a corresponding temporary sequence number in each MPDU contained in the A-MPDU; or,

The sending end carries a corresponding temporary sequence number in each MPDU except the first MPDU of the A-MPDU, the first MPDU does not carry a temporary sequence number, and the first MPDU The corresponding temporary serial number is a predefined value.

With reference to the first possible implementation of the first aspect, in a second possible implementation, the temporary sequence number is located in the media access control MAC header of the MPDU, or in the MPDU delimiter of the MPDU character, or in the CCMP header of the MPDU.

With reference to the second possible implementation of the first aspect, in a third possible implementation, the temporary sequence number is located in the high-efficiency HE control field in the MAC header of the MPDU, or in the bit in the QoS control field in the MAC header of the MPDU, or in the frame control field in the MAC header of the MPDU, or in the sequence control field in the MAC header of the MPDU.

With reference to any one of the first aspect to the third possible implementation manner, in a fourth possible implementation manner, the A-MPDU also carries a temporary sequence number existence indication, and the temporary sequence number existence indication uses to indicate whether the temporary serial number exists.

With reference to the fourth possible implementation of the first aspect, in a fifth possible implementation, the existence indication of the temporary sequence number is located in the physical header of the A-MPDU; or,

The presence indication of the temporary sequence number is located in the MPDU delimiter corresponding to each MPDU included in the A-MPDU; or,

The existence indication of the temporary sequence number is located in the medium access control MAC header of each MPDU contained in the A-MPDU; or,

The existence indication of the temporary sequence number is located in the CCMP header of each MPDU included in the A-MPDU.

With reference to the fifth possible implementation of the first aspect, in a sixth possible implementation, the presence of the temporary sequence number indicates the high-efficiency HE control field located in the MAC header of the MPDU, or located in the MPDU The quality of service QoS control field in the MAC header of the MPDU, or the frame control field in the MAC header of the MPDU.

With reference to the first aspect to the sixth possible implementation manner, in a seventh possible implementation manner, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the first ESI is used for Identifies the current interaction sequence.

With reference to the seventh possible implementation of the first aspect, in an eighth possible implementation, the first ESI is located in the frame control field of each MPDU in the A-MPDU, or in the A-MPDU The quality of service QoS control field of each MPDU in the A-MPDU, or the high-efficiency HE control field of each MPDU in the A-MPDU, or the MPDU delimiter corresponding to each MPDU in the A-MPDU or in the physical layer PHY header of the A-MPDU.

With reference to any one of the first aspect to the sixth possible implementation manner, in a ninth possible implementation manner, after the sending end sends the A-MPDU configured with a temporary sequence number, the Methods also include:

The sender receives a block acknowledgment BA frame, the BA frame includes a block acknowledgment information field corresponding to the sender, the block acknowledgment information field includes a block acknowledgment bit table subfield, and the block acknowledgment information field contains a first sequence number type indication, the first sequence number type indication is used to indicate that each bit of the block acknowledgment bit table subfield corresponds to the temporary sequence number of one MPDU in the A-MPDU;

The sending end judges whether the MPDU corresponding to the temporary sequence number corresponding to each bit is received correctly according to the value of each bit in the block acknowledgment bit table subfield.

With reference to the ninth possible implementation of the first aspect, in the tenth possible implementation, the sending end judges that each bit corresponds to Whether the MPDU corresponding to the temporary sequence number is received correctly, including:

The sending end judges the temporary sequence corresponding to each bit according to the stored correspondence between the temporary sequence number and the sequence number of each MPDU and the value of each bit in the block confirmation bit table subfield Whether the MPDU corresponding to the number is received correctly.

With reference to the ninth possible implementation manner of the first aspect, in an eleventh possible implementation manner, the block confirmation information field further includes a start sequence control subfield, and the start sequence control subfield includes A starting temporary sequence number, where the starting temporary sequence number is used to indicate the temporary sequence number of the MPDU corresponding to the first bit in the block acknowledgment bit table subfield.

With reference to the eleventh possible implementation manner of the first aspect, in a twelfth possible implementation manner, the first sequence number type indication is located in the fragment number subfield in the start sequence control subfield , or located in the per-flow identification information subfield in the block acknowledgment information field.

With reference to the twelfth possible implementation manner of the first aspect, in a thirteenth possible implementation manner, the subfield of the identification information per flow includes a flow identifier, and the type of the first sequence number indicates that the flow ID, when the stream ID is a predefined value, it means that the initial temporary sequence number is included in the initial sequence control subfield in the block acknowledgment information field.

With reference to any one of the ninth to thirteenth possible implementation manners of the first aspect, in a fourteenth possible implementation manner, each MPDU included in the A-MPDU carries the first exchange Interaction sequence identification ESI, the first ESI is used to identify the current interaction sequence;

The BA frame carries a second interaction sequence identifier ESI, where the second ESI is used to identify a current interaction sequence, and the value of the second ESI is the same as that of the first ESI.

With reference to the fourteenth possible implementation manner of the first aspect, in a fifteenth possible implementation manner, the second ESI is located in the per-flow identification information subfield in the block acknowledgment information field, or in the The block acknowledgment information field is in the start sequence control subfield.

With reference to the fourteenth possible implementation manner of the first aspect, in a sixteenth possible implementation manner, the second ESI is located in a block acknowledgment control field of the BA frame.

With reference to any one of the ninth to thirteenth possible implementation manners of the first aspect, in a seventeenth possible implementation manner, after the sending end sends the A-MPDU, it receives the BA Before the frame, the method also includes:

The sender sends a block acknowledgment request BAR frame.

With reference to the seventeenth possible implementation manner of the first aspect, in an eighteenth possible implementation manner, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the first ESI Used to identify the current interaction sequence;

The BAR frame carries a third ESI, the third ESI is used to identify a current interaction sequence, and the value of the third ESI is the same as that of the first ESI.

With reference to the eighteenth possible implementation of the first aspect, in the nineteenth possible implementation, the BAR frame includes a block confirmation request information field corresponding to the receiving end, and the third ESI is located in the Each stream identification information subfield in the block acknowledgment request information field or in the block acknowledgment request start sequence number control subfield.

With reference to the eighteenth possible implementation manner of the first aspect, in a twentieth possible implementation manner, the BAR frame includes a BAR control field, and the third ESI is located in the BAR control field.

With reference to any one of the eighteenth to twentieth possible implementations of the first aspect, in a twenty-first possible implementation, the BAR frame further carries a second sequence number type indication, The second sequence number type indication is used to indicate whether the BAR frame contains the third ESI.

In combination with the twenty-first possible implementation of the first aspect, in the twenty-second possible implementation In the manner, the second sequence number type indication is located in the BAR control field of the BAR frame, or in the block confirmation request information field corresponding to the receiving end included in the BAR frame.

In the second aspect, a method for confirming data reception is provided, including:

The receiving end receives the aggregated media access control protocol data unit A-MPDU sent by the sending end, and each media access control protocol data unit MPDU contained in the A-MPDU is configured with a corresponding temporary sequence number, and the A- Temporary sequence numbers of any two MPDUs contained in the MPDU are different, wherein at least two of the MPDUs in the A-MPDU have different flow identifier TIDs, and/or at least one MPDU contains fragments;

The receiving end sends a block acknowledgment BA frame, the BA frame includes a block acknowledgment information field corresponding to the sending end, the block acknowledgment information field includes a block acknowledgment bit table subfield, and the block acknowledgment information field contains a first sequence number type indication, and the first sequence number type indication is used to indicate that each bit of the block acknowledgment bit table subfield corresponds to a temporary sequence number of one MPDU in the A-MPDU.

With reference to the second aspect, in a first possible implementation manner, each media access control protocol data unit MPDU included in the A-MPDU is configured with a corresponding temporary sequence number, specifically:

Each MPDU included in the A-MPDU carries a corresponding temporary sequence number; or,

Each MPDU except the first MPDU of the A-MPDU carries a temporary sequence number, the first MPDU does not carry a temporary sequence number, and the temporary sequence number corresponding to the first MPDU is the preset Define the value.

With reference to the first possible implementation of the second aspect, in the second possible implementation, the temporary sequence number is located in the MAC header of the MPDU, or in the MPDU delimiter of the MPDU character, or in the CCMP header of the MPDU.

With reference to the second possible implementation of the second aspect, in a third possible implementation, the temporary sequence number is located in the high-efficiency HE control field in the MAC header of the MPDU, or in the MAC header of the MPDU The QoS control field in the header is either located in the frame control field in the MAC header of the MPDU, or in the sequence control field in the MAC header of the MPDU.

In combination with any one of the second aspect to the third possible implementation manner, in the fourth possible In an implementation manner, the A-MPDU further carries a temporary sequence number presence indication, and the temporary sequence number presence indication is used to indicate whether the temporary sequence number exists.

With reference to the fourth possible implementation of the second aspect, in a fifth possible implementation, the existence indication of the temporary sequence number is located in the physical header of the A-MPDU; or,

The presence indication of the temporary sequence number is located in the MPDU delimiter corresponding to each MPDU included in the A-MPDU; or,

The presence indication of the temporary sequence number is located in the medium access control MAC header of each MPDU contained in the A-MPDU; or

The existence indication of the temporary sequence number is located in the CCMP header of each MPDU included in the A-MPDU.

With reference to the fifth possible implementation of the second aspect, in a sixth possible implementation, the presence of the temporary sequence number indicates the high-efficiency HE control field located in the MAC header of the MPDU, or located in the MPDU The quality of service QoS control field in the MAC header of the MPDU, or the frame control field in the MAC header of the MPDU.

With reference to any one of the second aspect to the sixth possible implementation manner, in a seventh possible implementation manner, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the The first ESI is used to identify the current interaction sequence.

With reference to the seventh possible implementation of the second aspect, in an eighth possible implementation, the first ESI is located in the frame control field of each MPDU in the A-MPDU, or in the A-MPDU The quality of service QoS control field of each MPDU in the A-MPDU, or the high-efficiency HE control field of each MPDU in the A-MPDU, or the MPDU delimiter corresponding to each MPDU in the A-MPDU or in the physical layer PHY header of the A-MPDU.

With reference to any one of the second aspect to the sixth possible implementation manner, in a ninth possible implementation manner, the block confirmation information field further includes an initial sequence control subfield, and the initial sequence control subfield is The subfield includes a starting temporary sequence number, and the starting temporary sequence number is used to indicate the temporary sequence number of the MPDU corresponding to the first bit in the block acknowledgment bit table subfield.

In combination with the ninth possible implementation of the second aspect, in the tenth possible implementation, The first sequence number type indication is located in the fragment number subfield in the start sequence control subfield, or in the per-flow identification information subfield in the block acknowledgment information field.

With reference to the tenth possible implementation manner of the second aspect, in an eleventh possible implementation manner, the per-flow identification information subfield includes a flow identification, and the first sequence number type indicates the flow identification , when the flow identifier is a predefined value, it means that the start sequence control subfield in the block acknowledgment information field includes a start temporary sequence number.

With reference to the ninth or tenth possible implementation manner of the second aspect, in a twelfth possible implementation manner, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the The first ESI is used to identify the current interaction sequence;

The BA frame carries a second interaction sequence identifier ESI, the second ESI is used to identify a current interaction sequence, and the second ESI has the same value as the first ESI.

With reference to the twelfth possible implementation manner of the second aspect, in a thirteenth possible implementation manner, the second ESI is located in the per-flow identification information subfield in the block acknowledgment information field, or is located in The block acknowledgment information field is in the start sequence control subfield.

With reference to the twelfth possible implementation manner of the second aspect, in a fourteenth possible implementation manner, the second ESI is located in a block acknowledgment control field of the BA frame.

With reference to the second aspect, in a fifteenth possible implementation manner, after the receiving end receives the A-MPDU and before sending the BA frame, the method further includes:

The receiving end receives the block acknowledgment request BAR frame sent by the sending end.

With reference to the fifteenth possible implementation manner of the second aspect, in a sixteenth possible implementation manner, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the first ESI Used to identify the current interaction sequence;

The BA frame carries a second interaction sequence identifier ESI, and the second ESI is used to identify the current interaction sequence;

The BAR frame carries a third ESI, the third ESI is used to identify a current interaction sequence, and the third ESI has the same value as the first ESI and the second ESI.

In combination with the sixteenth possible implementation of the second aspect, in the seventeenth possible implementation In the BAR frame, the block confirmation request information field corresponding to the receiving end is included, and the third ESI is located in the identification information subfield of each flow or the block confirmation request start sequence number control subfield in the block confirmation request information field. domain.

With reference to the sixteenth possible implementation manner of the second aspect, in an eighteenth possible implementation manner, the BAR frame includes a BAR control field, and the third ESI is located in the BAR control field.

With reference to any one of the sixteenth to eighteenth possible implementations of the second aspect, in the nineteenth possible implementation, the BAR frame also carries a second sequence number type indication, so The second sequence number type indication is used to indicate whether the BAR frame includes the third ESI.

With reference to any one of the nineteenth possible implementation manner of the second aspect, in a twentieth possible implementation manner, the second sequence number type indication is located in the BAR control field of the BAR frame, or , located in the block acknowledgment request information field corresponding to the receiving end included in the BAR frame.

In a third aspect, a data sending device is provided, including:

The configuration module is configured to separately configure the temporary serial number of each media access control protocol data unit MPDU contained in the aggregated media access control protocol data unit A-MPDU, and the temporary sequence number of any two MPDUs contained in the A-MPDU The sequence numbers are different, wherein at least two MPDUs in the A-MPDUs have different flow identifier TIDs, and/or at least one MPDU contains fragments;

A sending module, configured to send the A-MPDU after the temporary serial number is configured by the configuration module.

With reference to the third aspect, in a first possible implementation manner, the configuration module is specifically used to:

Each MPDU contained in the A-MPDU carries a corresponding temporary sequence number; or,

Carry the corresponding temporary sequence number in each MPDU except the first MPDU of the A-MPDU, the first MPDU does not carry the temporary sequence number, and the temporary sequence corresponding to the first MPDU is a predefined value.

With reference to the first possible implementation of the third aspect, in a second possible implementation, the temporary sequence number is located in the MAC header of the MPDU, or in the MPDU delimiter of the MPDU character, or in the CCMP header of the MPDU.

With reference to the second possible implementation of the third aspect, in the third possible implementation, the temporary sequence number is located in the high-efficiency HE control field in the MAC header of the MPDU, or in the bit in the QoS control field in the MAC header of the MPDU, or in the frame control field in the MAC header of the MPDU, or in the sequence control field in the MAC header of the MPDU.

With reference to any one of the third aspect to the third possible implementation manner, in a fourth possible implementation manner, the A-MPDU also carries an indication of the existence of a temporary sequence number, and the existence indication of the temporary sequence number is used for to indicate whether the temporary serial number exists.

With reference to the fourth possible implementation of the third aspect, in a fifth possible implementation, the existence indication of the temporary sequence number is located in the physical header of the A-MPDU; or,

The presence indication of the temporary sequence number is located in the MPDU delimiter corresponding to each MPDU included in the A-MPDU; or,

The presence indication of the temporary sequence number is located in the medium access control MAC header of each MPDU contained in the A-MPDU; or

The existence indication of the temporary sequence number is located in the CCMP header of each MPDU included in the A-MPDU.

With reference to the fifth possible implementation of the third aspect, in a sixth possible implementation, the presence of the temporary sequence number indicates the high-efficiency HE control field located in the MAC header of the MPDU, or located in the MPDU The quality of service QoS control field in the MAC header of the MPDU, or the frame control field in the MAC header of the MPDU.

With reference to the third aspect to the sixth possible implementation manner, in a seventh possible implementation manner, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the first ESI is used for Identifies the current interaction sequence.

With reference to the seventh possible implementation of the third aspect, in an eighth possible implementation, the first ESI is located in the frame control field of each MPDU in the A-MPDU, or in the A-MPDU The quality of service QoS control field of each MPDU in the A-MPDU, or the high-efficiency HE control field of each MPDU in the A-MPDU, or the MPDU delimiter corresponding to each MPDU in the A-MPDU or in the physical layer PHY header of the A-MPDU.

In combination with any one of the third aspect to the sixth possible implementation manner, in a ninth possible implementation manner, a receiving module is further included, configured to:

Receive a block acknowledgment BA frame, the BA frame includes a block acknowledgment information field corresponding to the sender, the block acknowledgment information field includes a block acknowledgment bit table subfield, and the block acknowledgment information field includes the first A sequence number type indication, the first sequence number type indication is used to indicate that each bit of the block confirmation bit table subfield corresponds to a temporary sequence number of an MPDU in the A-MPDU;

Also includes processing modules for:

According to the value of each bit in the block acknowledgment bit table subfield in the BA frame received by the receiving module, it is judged whether the MPDU corresponding to the temporary sequence number corresponding to each bit is correctly received.

With reference to the ninth possible implementation manner of the third aspect, in a tenth possible implementation manner, the processing module is specifically configured to:

According to the stored correspondence between the temporary sequence number and the sequence number of each of the MPDUs and the value of each bit in the block confirmation bit table subfield, determine the MPDU corresponding to the temporary sequence number corresponding to each bit was received correctly.

With reference to the ninth possible implementation manner of the third aspect, in an eleventh possible implementation manner, the block confirmation information field further includes a start sequence control subfield, and the start sequence control subfield includes A starting temporary sequence number, where the starting temporary sequence number is used to indicate the temporary sequence number of the MPDU corresponding to the first bit in the block acknowledgment bit table subfield.

With reference to the eleventh possible implementation manner of the third aspect, in a twelfth possible implementation manner, the first sequence number type indication is located in the fragment number subfield in the start sequence control subfield , or located in the per-flow identification information subfield in the block acknowledgment information field.

With reference to the twelfth possible implementation manner of the third aspect, in the thirteenth possible implementation manner, the subfield of the identification information per flow includes a flow identifier, and the type of the first sequence number indicates that the flow ID, when the stream ID is a predefined value, it means that the initial temporary sequence number is included in the initial sequence control subfield in the block acknowledgment information field.

With reference to any one of the ninth to thirteenth possible implementation manners of the third aspect, in a fourteenth possible implementation manner, each MPDU included in the A-MPDU carries the first interactive A sequence identifier ESI, the first ESI is used to identify the current interaction sequence;

The BA frame carries a second interaction sequence identifier ESI, and the second ESI is used to identify the current In an interaction sequence, the value of the second ESI is the same as that of the first ESI.

With reference to the fourteenth or three possible implementation manners of the third aspect, in a fifteenth possible implementation manner, the second ESI is located in the per-flow identification information subfield in the block acknowledgment information field, or, Located in the start sequence control subfield of the block acknowledgment information field.

With reference to the fourteenth possible implementation manner of the third aspect, in a sixteenth possible implementation manner, the second ESI is located in a block acknowledgment control field of the BA frame.

With reference to any one of the ninth to thirteenth possible implementation manners of the third aspect, in a seventeenth possible implementation manner, the sending module is further configured to:

After sending the A-MPDU and before receiving the BA frame, the receiving module sends a block acknowledgment request BAR frame.

With reference to the seventeenth possible implementation manner of the third aspect, in the eighteenth possible implementation manner, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the first ESI Used to identify the current interaction sequence;

The BAR frame carries a third ESI, the third ESI is used to identify a current interaction sequence, and the value of the third ESI is the same as that of the first ESI.

With reference to the eighteenth possible implementation of the third aspect, in the nineteenth possible implementation, the BAR frame includes a block confirmation request information field corresponding to the receiving end, and the third ESI is located in the Each stream identification information subfield in the block acknowledgment request information field or in the block acknowledgment request start sequence number control subfield.

With reference to the eighteenth possible implementation manner of the third aspect, in a twentieth possible implementation manner, the BAR frame includes a BAR control field, and the third ESI is located in the BAR control field.

With reference to any one of the eighteenth to the twentieth possible implementation manners of the third aspect, in a twenty-first possible implementation manner, the BAR frame further carries a second sequence number type indication, The second sequence number type indication is used to indicate whether the BAR frame contains the third ESI.

With reference to the twenty-first possible implementation manner of the third aspect, in a twenty-second possible implementation manner, the second sequence number type indication is located in the BAR control field of the BAR frame, or located in the In the block acknowledgment request information field corresponding to the receiving end included in the BAR frame.

The fourth aspect provides a device for confirming data reception, including:

The receiving module is configured to receive the aggregated media access control protocol data unit A-MPDU sent by the sending end, and each media access control protocol data unit MPDU contained in the A-MPDU is configured with a corresponding temporary sequence number, so The temporary sequence numbers of any two MPDUs contained in the A-MPDU are different, wherein at least two of the MPDUs in the A-MPDU have different flow identification TIDs, and/or at least one MPDU contains fragments ;

A sending module, configured to send a block acknowledgment BA frame, the BA frame includes a block acknowledgment information field corresponding to the sending end, the block acknowledgment information field includes a block acknowledgment bit table subfield, and the block acknowledgment information The field includes a first sequence number type indication, and the first sequence number type indication is used to indicate that each bit of the block acknowledgment bit table subfield corresponds to a temporary sequence number of one MPDU in the A-MPDU.

With reference to the fourth aspect, in a first possible implementation manner, each media access control protocol data unit MPDU contained in the A-MPDU is configured with a corresponding temporary sequence number, specifically:

Each MPDU included in the A-MPDU carries a corresponding temporary sequence number; or,

Each MPDU except the first MPDU of the A-MPDU carries a temporary sequence number, the first MPDU does not carry a temporary sequence number, and the temporary sequence number corresponding to the first MPDU is the preset Define the value.

With reference to the first possible implementation of the fourth aspect, in the second possible implementation, the temporary sequence number is located in the MAC header of the MPDU, or in the MPDU delimiter of the MPDU character, or in the CCMP header of the MPDU.

With reference to the second possible implementation of the fourth aspect, in a third possible implementation, the temporary sequence number is located in the high-efficiency HE control field in the MAC header of the MPDU, or in the MAC header of the MPDU The QoS control field in the header is either located in the frame control field in the MAC header of the MPDU, or in the sequence control field in the MAC header of the MPDU.

With reference to any one of the fourth aspect to the third possible implementation manner, in the fourth possible implementation manner, the A-MPDU also carries a temporary sequence number existence indication, and the temporary sequence number existence indication uses to indicate whether the temporary serial number exists.

With reference to the fourth possible implementation of the fourth aspect, in a fifth possible implementation, the existence indication of the temporary sequence number is located in the physical header of the A-MPDU; or,

The presence indication of the temporary sequence number is located in the MPDU delimiter corresponding to each MPDU included in the A-MPDU; or,

The existence indication of the temporary sequence number is located in the medium access control MAC header of each MPDU contained in the A-MPDU; or,

The existence indication of the temporary sequence number is located in the CCMP header of each MPDU included in the A-MPDU.

With reference to the fifth possible implementation of the fourth aspect, in a sixth possible implementation, the presence of the temporary sequence number indicates the high-efficiency HE control field located in the MAC header of the MPDU, or located in the MPDU The quality of service QoS control field in the MAC header of the MPDU, or the frame control field in the MAC header of the MPDU.

With reference to any one of the fourth aspect to the sixth possible implementation manner, in a seventh possible implementation manner, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the The first ESI is used to identify the current interaction sequence.

With reference to the seventh possible implementation of the fourth aspect, in an eighth possible implementation, the first ESI is located in the frame control field of each MPDU in the A-MPDU, or in the A-MPDU The quality of service QoS control field of each MPDU in the A-MPDU, or the high-efficiency HE control field of each MPDU in the A-MPDU, or the MPDU delimiter corresponding to each MPDU in the A-MPDU or in the physical layer PHY header of the A-MPDU.

With reference to any one of the fourth aspect to the sixth possible implementation manner, in a ninth possible implementation manner, the block confirmation information field further includes an initial sequence control subfield, and the initial sequence control The subfield includes a starting temporary sequence number, and the starting temporary sequence number is used to indicate the temporary sequence number of the MPDU corresponding to the first bit in the block acknowledgment bit table subfield.

With reference to the ninth possible implementation manner of the fourth aspect, in a tenth possible implementation manner, the first sequence number type indication is located in the fragment number subfield in the start sequence control subfield, or , located in the per-flow identification information subfield in the block acknowledgment information field.

With reference to the tenth possible implementation manner of the fourth aspect, in an eleventh possible implementation manner, the subfield of the identifier information per flow includes a flow identifier, and the type of the first sequence number is indicated as the flow identifier , when the flow identifier is a predefined value, it means that the start sequence control subfield in the block acknowledgment information field includes a start temporary sequence number.

With reference to the ninth or eleventh possible implementation manner of the fourth aspect, in a twelfth possible implementation manner, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, so The first ESI is used to identify the current interaction sequence;

The BA frame carries a second interaction sequence identifier ESI, the second ESI is used to identify a current interaction sequence, and the second ESI has the same value as the first ESI.

With reference to the twelfth possible implementation manner of the fourth aspect, in a thirteenth possible implementation manner, the second ESI is located in the per-flow identification information subfield in the block acknowledgment information field, or is located in The block acknowledgment information field is in the start sequence control subfield.

With reference to the twelfth possible implementation manner of the fourth aspect, in a fourteenth possible implementation manner, the second ESI is located in a block acknowledgment control field of the BA frame.

With reference to the fourth aspect, in a fifteenth possible implementation manner, the receiving module is further configured to:

After receiving the A-MPDU, before the sending module sends the BA frame, receive the block acknowledgment request BAR frame sent by the sending end.

With reference to the fifteenth possible implementation manner of the fourth aspect, in a sixteenth possible implementation manner, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the first ESI Used to identify the current interaction sequence;

The BA frame carries a second interaction sequence identifier ESI, and the second ESI is used to identify the current interaction sequence;

The BAR frame carries a third ESI, the third ESI is used to identify a current interaction sequence, and the third ESI has the same value as the first ESI and the second ESI.

With reference to the sixteenth possible implementation of the fourth aspect, in the seventeenth possible implementation, the BAR frame includes a block confirmation request information field corresponding to the receiving end, and the third ESI is located in the Each flow identification information subfield in the block acknowledgment request information field or the starting sequence number of the block acknowledgment request in the control subdomain.

With reference to the sixteenth possible implementation manner of the fourth aspect, in an eighteenth possible implementation manner, the BAR frame includes a BAR control field, and the third ESI is located in the BAR control field.

With reference to any one of the sixteenth to eighteenth possible implementations of the fourth aspect, in the nineteenth possible implementation, the BAR frame also carries a second sequence number type indication, so The second sequence number type indication is used to indicate whether the BAR frame includes the third ESI.

With reference to any one of the nineteenth possible implementation manner of the fourth aspect, in the twentieth possible implementation manner, the second sequence number type indication is located in the BAR control field of the BAR frame, or , located in the block acknowledgment request information field corresponding to the receiving end included in the BAR frame.

In the fifth aspect, a device is provided, the device includes a processor, a memory and a transceiver, wherein the transceiver receives and sends data under the control of the processor, the memory stores a preset program, and the processor reads A program stored in memory, according to which the following procedures are performed:

Respectively configuring the temporary sequence number of each media access control protocol data unit MPDU contained in the aggregated medium access control protocol data unit A-MPDU, the temporary sequence numbers of any two MPDUs contained in the A-MPDU are different, Wherein, at least two MPDUs in the A-MPDU have different flow identification TIDs, and/or at least one MPDU contains fragments;

Sending the A-MPDU after the provisional serial number is configured by the configuration module through the transceiver.

With reference to the fifth aspect, in a first possible implementation manner, the processor is specifically configured to:

Each MPDU contained in the A-MPDU carries a corresponding temporary sequence number; or,

Carry the corresponding temporary sequence number in each MPDU except the first MPDU of the A-MPDU, the first MPDU does not carry the temporary sequence number, and the temporary sequence corresponding to the first MPDU is a predefined value.

With reference to the first possible implementation of the fifth aspect, in the second possible implementation, the temporary sequence number is located in the MAC header of the MPDU, or in the MPDU delimiter of the MPDU character, or in the CCMP header of the MPDU.

With reference to the second possible implementation of the fifth aspect, in a third possible implementation, the temporary sequence number is located in the high-efficiency HE control field in the MAC header of the MPDU, or in the bit in the QoS control field in the MAC header of the MPDU, or in the frame control field in the MAC header of the MPDU, or in the sequence control field in the MAC header of the MPDU.

With reference to any one of the fifth aspect to the third possible implementation manner, in a fourth possible implementation manner, the A-MPDU also carries a temporary sequence number existence indication, and the temporary sequence number existence indication uses to indicate whether the temporary serial number exists.

With reference to the fourth possible implementation of the fifth aspect, in a fifth possible implementation, the existence indication of the temporary sequence number is located in the physical header of the A-MPDU; or,

The presence indication of the temporary sequence number is located in the MPDU delimiter corresponding to each MPDU included in the A-MPDU; or,

The existence indication of the temporary sequence number is located in the medium access control MAC header of each MPDU contained in the A-MPDU; or,

The existence indication of the temporary sequence number is located in the CCMP header of each MPDU included in the A-MPDU.

With reference to the fifth possible implementation of the fifth aspect, in a sixth possible implementation, the presence of the temporary sequence number indicates the high-efficiency HE control field located in the MAC header of the MPDU, or located in the MPDU The quality of service QoS control field in the MAC header of the MPDU, or the frame control field in the MAC header of the MPDU.

With reference to the fifth aspect to the sixth possible implementation manner, in a seventh possible implementation manner, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the first ESI is used for Identifies the current interaction sequence.

With reference to the seventh possible implementation of the fifth aspect, in an eighth possible implementation, the first ESI is located in the frame control field of each MPDU in the A-MPDU, or in the A-MPDU The quality of service QoS control field of each MPDU in the A-MPDU, or the high-efficiency HE control field of each MPDU in the A-MPDU, or the MPDU delimiter corresponding to each MPDU in the A-MPDU or in the physical layer PHY header of the A-MPDU.

In combination with any one of the fifth aspect to the sixth possible implementation manner, in a ninth possible implementation manner, the processor is configured to:

A block acknowledgment BA frame is received by the transceiver, the BA frame includes a block acknowledgment information field corresponding to the sending end, the block acknowledgment information field includes a block acknowledgment bit table subfield, and the block acknowledgment information field contains Including a first sequence number type indication, the first sequence number type indication is used to indicate that each bit of the block confirmation bit table subfield corresponds to a temporary sequence number of an MPDU in the A-MPDU;

According to the value of each bit in the block acknowledgment bit table subfield in the received BA frame, it is judged whether the MPDU corresponding to the temporary sequence number corresponding to each bit is received correctly.

With reference to the ninth possible implementation manner of the fifth aspect, in a tenth possible implementation manner, the processor is specifically configured to:

According to the stored correspondence between the temporary sequence number and the sequence number of each of the MPDUs and the value of each bit in the block confirmation bit table subfield, determine the MPDU corresponding to the temporary sequence number corresponding to each bit was received correctly.

With reference to the ninth possible implementation manner of the fifth aspect, in an eleventh possible implementation manner, the block confirmation information field further includes a start sequence control subfield, and the start sequence control subfield includes A starting temporary sequence number, where the starting temporary sequence number is used to indicate the temporary sequence number of the MPDU corresponding to the first bit in the block acknowledgment bit table subfield.

With reference to the eleventh possible implementation manner of the fifth aspect, in a twelfth possible implementation manner, the first sequence number type indication is located in the fragment number subfield of the start sequence control subfield , or located in the per-flow identification information subfield in the block acknowledgment information field.

With reference to the twelfth possible implementation manner of the fifth aspect, in a thirteenth possible implementation manner, the subfield of the identification information per flow includes a flow identifier, and the type of the first sequence number indicates that the flow ID, when the stream ID is a predefined value, it means that the initial temporary sequence number is included in the initial sequence control subfield in the block acknowledgment information field.

With reference to any one of the ninth to the thirteenth possible implementation manners of the fifth aspect, in the fourteenth possible implementation manner, each MPDU included in the A-MPDU carries the first interactive A sequence identifier ESI, the first ESI is used to identify the current interaction sequence;

The BA frame carries a second interaction sequence identifier ESI, and the second ESI is used to identify the current In an interaction sequence, the value of the second ESI is the same as that of the first ESI.

With reference to the fourteenth possible implementation manner of the fifth aspect, in the fifteenth possible implementation manner, the second ESI is located in the per-flow identification information subfield in the block acknowledgment information field, or in the The block acknowledgment information field is in the start sequence control subfield.

With reference to the fourteenth possible implementation manner of the fifth aspect, in a sixteenth possible implementation manner, the second ESI is located in a block acknowledgment control field of the BA frame.

In combination with any one of the ninth to thirteenth possible implementation manners of the fifth aspect, in a seventeenth possible implementation manner, the processor is further configured to:

Instructing the transceiver to send a block acknowledgment request BAR frame after sending the A-MPDU and before receiving the BA frame.

With reference to the seventeenth possible implementation manner of the fifth aspect, in the eighteenth possible implementation manner, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the first ESI Used to identify the current interaction sequence;

The BAR frame carries a third ESI, the third ESI is used to identify a current interaction sequence, and the value of the third ESI is the same as that of the first ESI.

With reference to the eighteenth possible implementation of the fifth aspect, in the nineteenth possible implementation, the BAR frame includes a block confirmation request information field corresponding to the receiving end, and the third ESI is located in the Each stream identification information subfield in the block acknowledgment request information field or in the block acknowledgment request start sequence number control subfield.

With reference to the eighteenth possible implementation manner of the fifth aspect, in a twentieth possible implementation manner, the BAR frame includes a BAR control field, and the third ESI is located in the BAR control field.

With reference to any one of the eighteenth to twenty-first possible implementations of the fifth aspect, in the twentieth possible implementation, the BAR frame further carries a second sequence number type indication, The second sequence number type indication is used to indicate whether the BAR frame contains the third ESI.

With reference to the twenty-first possible implementation manner of the fifth aspect, in a twenty-second possible implementation manner, the second sequence number type indication is located in the BAR control field of the BAR frame, or located in the In the block acknowledgment request information field corresponding to the receiving end included in the BAR frame.

The sixth aspect provides a device, which includes a processor, a memory, and a transceiver, wherein the transceiver receives and sends data under the control of the processor, the memory stores a preset program, and the processor reads the data stored in the memory Saved program, follow the program to perform the following procedure:

The aggregated media access control protocol data unit A-MPDU sent by the sender is received by the transceiver, and each media access control protocol data unit MPDU contained in the A-MPDU is configured with a corresponding temporary sequence number, and the A-MPDU is configured with a corresponding temporary sequence number. - Temporary sequence numbers of any two MPDUs contained in the MPDU are different, wherein at least two of the MPDUs in the A-MPDU have different flow identifier TIDs, and/or at least one MPDU contains fragments;

A block confirmation BA frame is sent by the transceiver, the BA frame includes a block confirmation information field corresponding to the sending end, the block confirmation information field includes a block confirmation bit table subfield, and the block confirmation information field contains It includes a first sequence number type indication, and the first sequence number type indication is used to indicate that each bit of the block acknowledgment bit table subfield corresponds to a temporary sequence number of one MPDU in the A-MPDU.

With reference to the sixth aspect, in a first possible implementation manner, each media access control protocol data unit MPDU contained in the A-MPDU is configured with a corresponding temporary sequence number, specifically:

Each MPDU included in the A-MPDU carries a corresponding temporary sequence number; or,

Each MPDU except the first MPDU of the A-MPDU carries a temporary sequence number, the first MPDU does not carry a temporary sequence number, and the temporary sequence number corresponding to the first MPDU is the preset Define the value.

With reference to the first possible implementation of the sixth aspect, in the second possible implementation, the temporary sequence number is located in the MAC header of the MPDU, or in the MPDU delimiter of the MPDU character, or in the CCMP header of the MPDU.

With reference to the second possible implementation of the sixth aspect, in a third possible implementation, the temporary sequence number is located in the high-efficiency HE control field in the MAC header of the MPDU, or in the MAC header of the MPDU The QoS control field in the header is either located in the frame control field in the MAC header of the MPDU, or in the sequence control field in the MAC header of the MPDU.

In combination with any one of the sixth aspect to the third possible implementation manner, in the fourth possible In an implementation manner, the A-MPDU further carries a temporary sequence number presence indication, and the temporary sequence number presence indication is used to indicate whether the temporary sequence number exists.

With reference to the fourth possible implementation of the sixth aspect, in a fifth possible implementation, the existence indication of the temporary sequence number is located in the physical header of the A-MPDU; or,

The presence indication of the temporary sequence number is located in the MPDU delimiter corresponding to each MPDU included in the A-MPDU; or,

The existence indication of the temporary sequence number is located in the medium access control MAC header of each MPDU contained in the A-MPDU; or,

The existence indication of the temporary sequence number is located in the CCMP header of each MPDU included in the A-MPDU.

With reference to the fifth possible implementation manner of the sixth aspect, in the sixth possible implementation manner, the presence indication of the temporary sequence number is located in the high-efficiency HE control field in the MAC header of the MPDU, or in the MPDU The quality of service QoS control field in the MAC header of the MPDU, or the frame control field in the MAC header of the MPDU.

With reference to any one of the sixth aspect to the sixth possible implementation manner, in a seventh possible implementation manner, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the The first ESI is used to identify the current interaction sequence.

With reference to the seventh possible implementation of the sixth aspect, in an eighth possible implementation, the first ESI is located in the frame control field of each MPDU in the A-MPDU, or in the A-MPDU The quality of service QoS control field of each MPDU in the A-MPDU, or the high-efficiency HE control field of each MPDU in the A-MPDU, or the MPDU delimiter corresponding to each MPDU in the A-MPDU or in the physical layer PHY header of the A-MPDU.

With reference to any one of the sixth aspect to the sixth possible implementation manner, in a ninth possible implementation manner, the block confirmation information field further includes an initial sequence control subfield, and the initial sequence control subfield is The subfield includes a starting temporary sequence number, and the starting temporary sequence number is used to indicate the temporary sequence number of the MPDU corresponding to the first bit in the block acknowledgment bit table subfield.

In combination with the ninth possible implementation of the sixth aspect, in the tenth possible implementation, The first sequence number type indication is located in the fragment number subfield in the start sequence control subfield, or in the per-flow identification information subfield in the block acknowledgment information field.

With reference to the tenth possible implementation manner of the sixth aspect, in an eleventh possible implementation manner, the subfield of the identifier information per flow includes a flow identifier, and the type of the first sequence number is indicated as the flow identifier , when the flow identifier is a predefined value, it means that the start sequence control subfield in the block acknowledgment information field includes a start temporary sequence number.

With reference to the ninth or tenth possible implementation manner of the sixth aspect, in a twelfth possible implementation manner, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the The first ESI is used to identify the current interaction sequence;

The BA frame carries a second interaction sequence identifier ESI, the second ESI is used to identify a current interaction sequence, and the second ESI has the same value as the first ESI.

With reference to the twelfth possible implementation manner of the sixth aspect, in a thirteenth possible implementation manner, the second ESI is located in the per-flow identification information subfield in the block acknowledgment information field, or is located in The block acknowledgment information field is in the start sequence control subfield.

With reference to the twelfth possible implementation manner of the sixth aspect, in a fourteenth possible implementation manner, the second ESI is located in a block acknowledgment control field of the BA frame.

With reference to the sixth aspect, in a fifteenth possible implementation manner, the processor is further configured to:

Instructing the transceiver to receive the block acknowledgment request BAR frame sent by the sender after receiving the A-MPDU and before sending the BA frame.

With reference to the fifteenth possible implementation manner of the sixth aspect, in the sixteenth possible implementation manner, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the first ESI Used to identify the current interaction sequence;

The BA frame carries a second interaction sequence identifier ESI, and the second ESI is used to identify the current interaction sequence;

The BAR frame carries a third ESI, the third ESI is used to identify a current interaction sequence, and the third ESI has the same value as the first ESI and the second ESI.

In combination with the sixteenth possible implementation of the sixth aspect, in the seventeenth possible implementation In the BAR frame, the block confirmation request information field corresponding to the receiving end is included, and the third ESI is located in the identification information subfield of each flow or the block confirmation request start sequence number control subfield in the block confirmation request information field. domain.

With reference to the sixteenth possible implementation manner of the sixth aspect, in an eighteenth possible implementation manner, the BAR frame includes a BAR control field, and the third ESI is located in the BAR control field.

With reference to any one of the sixteenth to eighteenth possible implementations of the sixth aspect, in the nineteenth possible implementation, the BAR frame also carries a second sequence number type indication, so The second sequence number type indication is used to indicate whether the BAR frame includes the third ESI.

With reference to any one of the nineteenth possible implementation manner of the sixth aspect, in the twentieth possible implementation manner, the second sequence number type indication is located in the BAR control field of the BAR frame, or , located in the block acknowledgment request information field corresponding to the receiving end included in the BAR frame.

Based on the above technical solution, in the embodiment of the present invention, when at least two MPDUs in the A-MPDU have different TIDs and/or at least one MPDU contains fragments, the sender configures the A-MPDU contained in the The temporary serial number of each MPDU, the temporary serial number of all MPDUs in the A-MPDU is a unified number, to ensure that the temporary serial numbers of any two MPDUs contained in the A-MPDU are different, so that the receiving end replies to BA frame, according to the temporary sequence number of each MPDU in the A-MPDU, a block confirmation information field can be used to confirm all the MPDUs in the A-MPDU in the BA frame, thereby reducing the transmission overhead of the BA frame and solving the problem of identified difficult issues.

Description of drawings

Figure 1 is a schematic diagram of the interaction sequence;

Fig. 2 is a schematic diagram of the transmission of multiple A-MPDUs with different TIDs;

Fig. 3 is a schematic structural diagram of a multi-STA BA frame;

Figure 4a is a schematic diagram of transmission in the case of an MPDU containing a TID in the A-MPDU;

Figure 4b is a schematic diagram of transmission in the case of MPDUs containing multiple TIDs in the A-MPDU;

Fig. 5 is the structural representation of the multi-TID BA frame that adopts the combination of AID and TID as mark;

FIG. 6 is a schematic flowchart of a method for sending data by a sending end in an embodiment of the present invention;

7 is a schematic structural diagram of an A-MPDU in which a new field is added to carry a temporary sequence number in the MAC header of the MPDU in an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of an HE control field of an MPDU in an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a frame control field of an MPDU in an embodiment of the present invention;

Figure 10a is a schematic diagram of the mapping between the sequence number and the temporary sequence number when the sequence control field of the MPDU is used to carry the temporary sequence number in the embodiment of the present invention;

Fig. 10b is the counter change of each TID before and after the transmission of the A-MPDU when the sequence control field of the MPDU is used to carry the temporary sequence number in the embodiment of the present invention;

Fig. 11 is a schematic structural diagram of MPDU Delimiter in the embodiment of the present invention;

Figure 12 is a schematic diagram of the CCMP MPDU structure;

FIG. 13 is a schematic flowchart of a method for confirming data reception by the receiving end in an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of a BA frame in an embodiment of the present invention;

FIG. 15 is a schematic structural diagram of another BA frame in an embodiment of the present invention;

FIG. 16 is a schematic structural diagram of a BAR frame in an embodiment of the present invention;

FIG. 17 is a schematic structural diagram of a data sending device in an embodiment of the present invention;

FIG. 18 is a schematic structural diagram of a device for confirming data reception in an embodiment of the present invention;

Fig. 19 is a schematic diagram of the equipment structure in the embodiment of the present invention;

Fig. 20 is a schematic structural diagram of another device in an embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The standard stipulates that the sequence number (Sequence Number, SN for short) of the quality of service (Quality of Service, QoS) data frame maintained by the sender is per <RA, TID>, RA (Receiving Address) Indicates the receiving address. In other words, the sequence numbers of MPDUs with different TIDs in a multi-TID A-MPDU are independent of each other. For example, in a multi-TID A-MPDU, the serial numbers corresponding to MPDUs with TID=1 are 10~15, the serial numbers corresponding to MPDUs with TID=2 are 1001~1007, and the serial numbers corresponding to MPDUs with TID=3 are 1005~1015, etc.

In the current BA frame, only one field in each BA Info is used to carry the starting sequence number (that is, the MPDU sequence number corresponding to the first bit in the BA Bitmap), so it is impossible to indicate that the BA Bitmap carries different TIDs. Multiple starting sequence numbers.

Based on the above analysis, the basic idea of the present invention is: in the case that at least two MPDUs in the A-MPDU have different TIDs and/or at least one MPDU contains fragments, the sender configures each The temporary serial number of an MPDU, the temporary serial number of all MPDUs in the A-MPDU is a unified number, to ensure that the temporary serial numbers of any two MPDUs in the A-MPDU are not the same, so that when the receiving end replies to the BA frame, In the BA frame, according to the temporary sequence number of each MPDU in the A-MPDU, a block confirmation information field can be used to confirm all the MPDUs in the A-MPDU.

It should be noted that the so-called "temporary serial numbers of all MPDUs are unified numbers" can be sequential numbering of multiple MPDUs, or random numbering, as long as the temporary serial numbers of any two MPDUs are different. . Sequential numbers such as: 0, 1, 2, 3..., or 63, 62, 61, 60..., or 0, 2, 4, 6..., etc.; random numbers such as: 15, 2, 30, 59, 11, … However, from the point of view of general habits and the shortest possible expression length of temporary serial numbers, the ordered incremental numbering method of 0, 1, 2, 3... is obviously more in line with the general way of thinking. Therefore, the ordered incremental numbering is temporary. Preferred scheme for serial numbering.

Based on this concept, in the embodiment of the present invention, as shown in Figure 6, the detailed method flow of the sending end for data transmission is as follows:

601: The sending end separately configures the temporary sequence number (Temporary Sequence Number, T-SN) of each MPDU contained in the A-MPDU, the A-MPDU includes multiple MPDUs, and the temporary sequence number of any two MPDUs in the A-MPDU The sequence numbers are not the same, wherein at least two MPDUs in the A-MPDU have different flow identifier TIDs, and/or at least one MPDU contains Fragmentation.

In implementation, the A-MPDU also carries a temporary sequence number existence indication, and the temporary sequence number existence indication is used to indicate whether the temporary sequence number exists. Specifically, the presence of the temporary sequence number indicates that it is located in the physical layer (Physical Layer, PHY) header of the A-MPDU, and the physical layer header is usually called a physical header; or, the presence of the temporary sequence number indicates that it is located in each MPDU contained in the A-MPDU. In the corresponding MPDU delimiter (Delimiter); or, the presence indication of the temporary sequence number is located in the MAC header of each MPDU included in the A-MPDU. Among them, the PHY header is also called the PLCP (Physical Layer Convergence Procedure, physical layer convergence process) header, and the temporary sequence number existence indication can be indicated by the bits in the SIG (Signal, signaling) field in the PLCP header, or by the PLCP Indicated by the polarity of some symbols in the header, or by the remainder of dividing the legacy length (Legacy Length, L-Length) by 3 in the L-SIG (Legacy Signal, old signaling domain) field in the PLCP header .

For example, the presence of the temporary sequence number indicates the High Efficiency (HE) control field in the MAC header of the MPDU, or the QoS control field in the MAC header of the MPDU, or the frame control field in the MAC header of the MPDU middle. Among them, the HE control domain can also be referred to as the HE variant (Variant) of the High Throughput (High Throughout, HT) control domain in relevant standards or documents, or as HEW (High Efficiency Wireless Local Area Network, high-efficiency wireless local area network ) control domain.

In practice, there are many ways to carry the temporary serial number, including but not limited to the following specific implementation ways:

In a first embodiment, the temporary sequence number is located in the Media Access Control (MAC) header of the MPDU. This specific implementation method may include, but is not limited to, the following methods:

First, the sender carries the corresponding temporary sequence number in each MPDU contained in the A-MPDU. As shown in Figure 7, a new field is added in the MAC header of the MPDU, and the new field is used to carry the temporary sequence number. Specifically, a new field is added in the MAC header of the MPDU in each subframe of the A-MPDU. In order to ensure that the total length of the MAC header is an integer number of bytes, the length of the newly added field is 1 byte, but the actual The number of bits used to carry the temporary serial number may be less than 1 byte, such as 6 bits.

The presence of a temporary serial number indicates that an existing domain can be used, including but not limited to the following situations:

In case a, the presence indication of the temporary sequence number is located in the physical header. Specifically, the presence indication of the temporary sequence number may be located in the signaling field of the physical header. When the existence of the temporary sequence number indicates that the first preset value is taken, for example, when it is 1, it means that there is a temporary sequence number in the MAC header of each MPDU in the A-MPDU, otherwise, it means that there is no temporary sequence number in the A-MPDU . The existence indication of the temporary sequence number can also be indicated by the polarity of a specific symbol in a certain field in the physical header. For example, when the polarity of the specific symbol in this field is the first preset polarity, it means that each There is a temporary sequence number in the MAC header of the MPDU, otherwise, it means that there is no temporary sequence number in the A-MPDU. The existence indication of the temporary sequence number can also be indicated by dividing the L-Length value in the L-SIG field in the physical header by the remainder of 3. For example, a remainder of 1 indicates that there is a temporary sequence number in the MAC header of each MPDU in the A-MPDU , a remainder of 2 indicates that there is no temporary sequence number in the A-MPDU.

In case b, the presence indication of the temporary sequence number is located in the MPDU delimiter (Delimiter) corresponding to each MPDU. Currently, there is a reserved bit in the MPDU Delimiter, which can be used to carry the presence indication of the temporary sequence number, indicating that the MPDU Delimiter corresponds to Whether there is a temporary sequence number in the MPDU of the

Case c, the temporary sequence number exists to indicate that it is located in the MAC header of each MPDU of the A-MPDU, specifically it can be in the QoS control field or the HE control field or the frame control (Frame Control, FC) field in the MAC header, for example, it is located in the frame From the distribution system (From DS; DS, Distribution System, distribution system) domain or to the distribution system (To DS) domain in the control domain.

Second, use the existing field in the MAC header of the MPDU to carry the temporary sequence number.

Specifically, it can be divided into several situations:

In case a, the sender carries a corresponding temporary sequence number in each MPDU included in the A-MPDU, and the temporary sequence number is located in the HE control field in the MAC header of the MPDU.

For example, as shown in Figure 8, there are 8 reserved bits in the HT control field of the 802.11n standard. If the HE control field also adopts a similar structure, 6 bits can be used to carry the temporary serial number, and one of the bits can be used to carry the temporary serial number. Serial number presence indication. In Figure 8, CSI is Channel State Information, NDP is Null Data Packet, AC is Access Category, and RDG is Reverse Direction Grant), PPDU means Physical Layer Convergence Procedure Protocol Data Unit (Physical Layer Convergence Procedure protocol Data Unit), TRQ means training request, MAI means modulation and coding scheme request or antenna selection indication (MRQ or ASEL Indication; MRQ, that is, MCS Request; ASEL , that is, Antenna Selection; MCS, Modulation and Coding Scheme), MFSI means MCS Feedback Sequence Identifier (MCS Feedback Sequence Identifier), MFB means MCS Feedback, and ASELC means Antenna Selection Command (ASEL Command).

In case b, the temporary sequence number is located in the QoS control field in the MAC header of the MPDU.

The sending end carries the corresponding temporary sequence number in each MPDU included in the A-MPDU. According to the current standard, if the A-MPDU contains two or more subframes, the Aggregate MAC Service Data Unit (A-MSDU for short) cannot be used in the MPDU, that is, B7 in the QoS control domain The bit is a reserved bit, and the multi-TID A-MPDU contains at least two subframes. Therefore, the B7 bit in the QoS control field must be a reserved bit, so this bit can be used to carry the indication of the existence of the temporary sequence number, and the bit located after B7 The 6 bits in B8~B15 of the B15 carry the temporary sequence number. It should be noted that B8~B15 in the QoS control domain itself is defined, and is used to carry the data volume or expected sending time of the flow corresponding to the TID (that is, the content carried by B0~B3 bits) to be transmitted on the device , but many technologies have been proposed in the 802.11 standard to realize this function, such as random access technology, etc. Therefore, B8-B15 in the QoS control field can be redefined as carrying temporary sequence numbers.

If you want to keep the original definition of B8~B15 in the QoS control field, you can use the following scheme: the sender carries the corresponding temporary sequence number in each MPDU except the first MPDU of A-MPDU, and the first MPDU An MPDU does not carry a temporary sequence number, and the temporary sequence number corresponding to the first MPDU is a predefined value, for example, the predetermined value is zero. Set the B7 bit in the QoS control field of the first MPDU in the A-MPDU to zero, indicating that the B8~B15 bits retain their original functions, but their functions are changed to B8~B15 carrying all the data to be transmitted or the expected transmission Time, that is, the sum of the amount of data to be transmitted of all TIDs or the expected sending time of these data, the B7 bit of other MPDUs except the first MPDU is set to 1, and the B8~B15 bits carry the temporary sequence number. The principle of this scheme is that the position of the first MPDU is clear and unambiguous, so its temporary sequence number is set to It can be set as the default value, for example, the default value is zero, but it is not necessary to explicitly carry it in the MPDU.

In case c, the sender carries a corresponding temporary sequence number in each MPDU included in the A-MPDU, and the temporary sequence number is located in the frame control field in the MAC header of the MPDU.

In MU transmission, as shown in Figure 9, the From DS and To DS in the frame control field are reserved bits, and one of the bits can be used to carry the existence indication of the temporary sequence number. When the existence indication of the temporary sequence number is the set value, For example, when it is 1, it means that the type (Type) subfield and subtype (Subtype) subfield in the frame control field carry a temporary sequence number; otherwise, the type (Type) subfield and subtype (Subtype) in the frame control field Subdomains retain their original functionality. The principle of this scheme is that the frame type that can be aggregated by multi-TID A-MPDU can only be QoS Data frame, that is, Type=10 and Subtype=1000. In the case of -TID A-MPDU, the Type and Subtype subfields can be used to carry other information, such as the temporary serial number.

In case d, the sender carries a corresponding temporary sequence number in each MPDU contained in the A-MPDU, and the temporary sequence number is located in the sequence control (Sequence Control) field in the MAC header of the MPDU. This solution is used in the case of an MPDU containing at least two TIDs in the A-MPDU.

Specifically, the serial number subfield in the serial control field is used to carry the temporary serial number. As shown in Figure 7 and Figure 9, the MAC header of the MPDU of the management frame and the data frame contains a sequence control field with a length of 2 bytes, and the 12-bit sequence number subfield is used to carry the sequence number of the current MPDU. In this embodiment, when the presence of the temporary sequence number indicates that the current MPDU uses the temporary sequence number, the sequence number subfield will no longer carry the sequence number, but the temporary sequence number.

At this time, the temporary sequence number may be the aforementioned "unified number", that is, the MPDU temporary sequence number has nothing to do with the sequence number, but it may also be generated based on the sequence numbers of MPDUs aggregated in the current A-MPDU. A specific implementation method is to use the maximum value among the Counters (counters) of multiple TIDs to be aggregated as the initial value of the temporary sequence number in the A-MPDU. Wherein, the sending end maintains a Counter for each TID of each STA, which is used to record the starting sequence number of the currently to-be-sent MPDU. As shown in Figure 10a, the MPDUs to be sent from the sender to the receiver are TID1 (SN=50~52), TID2 (SN=1000~1001), TID3 (SN=2055~2057), and the Counter values of the three TIDs 50, 1000, 2055 respectively. Obviously, Counter=2055 whose maximum value is TID3, therefore, A-MPDU The temporary serial numbers in the medium start from 2055 until 2062. The order of MPDUs with different TIDs in the A-MPDU can be arranged arbitrarily. It is not necessary to follow the order of TID3, TID1, and TID2 shown in Figure 10a, and even multiple MPDUs of the same TID can be discontinuous. Note that in order to avoid confusion when the receiving end receives an MPDU with the same serial number as the MPDU of a certain TID in the A-MPDU within a short time after the current A-MPDU, after the above-mentioned A-MPDU transmission is completed, the Counter value of all TIDs should be Adjust to add 1 to the maximum temporary sequence number in the A-MPDU, as shown in Figure 10b, the Counter values of the three TIDs are all adjusted to 2063. In addition, in order to avoid confusion at the sender between the temporary sequence number of the MPDU in the A-MPDU and the sequence number of the MPDU that was sent before the current A-MPDU but has not yet received the confirmation frame from the receiver, it should be stipulated that the sender should aggregate in the A-MPDU The MPDU with the same TID before the MPDU of the MPDU satisfies the following conditions: 1) the receiver has received an acknowledgment, or 2) the sender has given up sending due to reasons such as the validity period of the frame. Another specific implementation method is to sort the MPDUs to be sent, and use the sequence number of the first MPDU as the initial value of the temporary sequence number in the A-MPDU, and the temporary sequence numbers of other MPDUs are incremented sequentially on this basis .

In the second specific implementation manner, the sending end carries a corresponding temporary sequence number in each MPDU contained in the A-MPDU, and the temporary sequence number is located in the MPDU delimiter (Delimiter) of the MPDU.

Specifically, a byte is added to the MPDU Delimiter of each MPDU in the A-MPDU to carry the temporary serial number, and the actual number of bits occupied by the temporary serial number is less than or equal to one byte, for example, the temporary serial number occupies 6 Bits, as shown in Figure 11, the added byte is located after the delimiter signature (Delimiter Signature) subfield, the advantage of such placement is that it does not affect the original scheme of checking the delimiter signature every 4 bytes. It should be noted that the verification of the newly added byte (that is, the byte used to carry the temporary serial number) is still located in the cyclic redundancy code (Cyclic Redundancy Code, CRC) subfield in the MPDU Delimiter, that is, the temporary serial number and Other parts in the MPDU Delimiter are checked together, and the check result is still placed in the CRC subfield before the delimiter signature.

In this embodiment, the specific location of the temporary sequence number indication can be in the PHY header, indicating whether there is a newly added byte in all MPDU Delimiter fields of the current A-MPDU, that is, the temporary sequence number Column number; or, the presence of the temporary serial number indicates that it is located in the reserved bit of each MPDU Delimiter of the A-MPDU, indicating whether there is a new byte in the MPDU corresponding to the MPDU Delimiter, that is, the temporary serial number.

In the third specific implementation manner, the sending end carries a corresponding temporary serial number in each MPDU contained in the A-MPDU, and the temporary serial number is located in the CCMP (Counter mode with Cipher-block chaining Message authentication code Protocol of the MPDU, counter mode Cipher Block Chain Message Authentication Code Protocol) header. This solution is only applicable to the case that all MPDUs in the A-MPDU are transmitted in CCMP encryption mode.

Figure 12 shows the format of the CCMP MPDU. Comparing the format of the MPDU in Figure 7 and Figure 9, it can be seen that if the MPDU is encrypted for transmission (indicated by the "protected frame" bit of the frame control field in the MAC header) and encrypted using CCMP (indicated by the ExtIV in the CCMP header), the frame The body part includes CCMP header, data and Message Integrity Code (Message Integrity Code, MIC), and both Data and MIC are protected by encryption. Among them, the CCMP header contains a 6-byte packet serial number (Packet Number, PN), and the 6 bytes are represented by PN0-PN5 respectively, PN0 is the low byte, and PN5 is the high byte. For the sending end, the PN of different MPDUs is incremented by one, and the receiving end and TID are not distinguished. Even if the frame is retransmitted, the PN of the previous transmission is different. Therefore, a PN can uniquely identify an MPDU. Based on this, the PN or some lower bits of the PN can be used as the temporary sequence number of the MPDU, for example, PN0 can be used as the temporary sequence number of the MPDU. For this embodiment, the existence indication of the temporary sequence number may also be located in the CCMP header. For example, carry any reserved bit in the CCMP header.

In implementation, each MPDU included in the A-MPDU carries a first exchange sequence identifier (Exchange Sequence Identifier, ESI), and the first ESI is used to identify the current exchange sequence. Wherein, the interaction sequence refers to the sequence composed of A-MPDU and BA frame, or the interaction sequence refers to the sequence composed of A-MPDU, BAR frame and BA frame. Specifically, the first ESI is included in the frame control field or QoS control field or HE control field or MPDU delimiter of each MPDU included in the A-MPDU. The first ESI can also be located in the PHY header of the A-MPDU. Specifically, the first ESI is located in the SIG field in the PHY header of the A-MPDU.

In a specific implementation, the ESI generally occupies 2 to 3 bits.

Step 602: The sender sends the A-MPDU.

During implementation, the original sequence number (Sequence Number, SN for short) of each MPDU in the A-MPDU still exists, and is located in the sequence control (Sequence Control) field of the MAC header of each MPDU in the A-MPDU, and the sender saves The correspondence between the temporary sequence number and the sequence number of each MPDU in the A-MPDU.

In the embodiment of the present invention, as shown in FIG. 13, the detailed method flow of receiving the A-MPDU at the receiving end and confirming the data reception is as follows:

Step 1101: The receiving end receives the A-MPDU sent by the sending end. Each MPDU contained in the A-MPDU is configured with a corresponding temporary sequence number. The A-MPDU includes multiple MPDUs. Any MPDU contained in the A-MPDU The temporary sequence numbers of the two MPDUs are different, wherein at least two of the MPDUs in the A-MPDU have different stream identifiers TIDs, and/or at least one of the MPDUs contains fragments.

In implementation, each MPDU contained in the A-MPDU carries a corresponding temporary sequence number; or, each MPDU except the first MPDU of the A-MPDU carries a temporary sequence number, and the first MPDU does not carry a temporary sequence number, and the temporary sequence number corresponding to the first MPDU is a predefined value. The specific parameters carried by the A-MPDU and the manner in which the parameters are carried are the same as those described by the sender, and will not be repeated here.

During implementation, since the original sequence number (Sequence Number, SN for short) of each MPDU in the A-MPDU still exists, like this, after the receiving end receives the A-MPDU, it is still sorted according to the SN of each MPDU, Therefore, there will be no problem of disordered sequence of multiple MPDUs of the same TID.

Step 1102: the receiving end sends a BA frame, which includes a block confirmation information field (also called BA Info field) corresponding to the sending end, and the block confirmation information field includes a block confirmation bit table (BA Bitmap) subfield, And the block acknowledgment information field includes a first sequence number type (SN Type) indication, which is used to indicate that each bit of the block acknowledgment bit table subfield corresponds to a temporary MPDU in the A-MPDU respectively. serial number.

Figure 14 is a schematic diagram of the structure of the BA frame, which includes the BA control field and BA Info domain, wherein the BA Info domain includes a per-flow identification information (Per-TID Info) subfield, a starting sequence control (Starting Sequence Control) subfield and a block confirmation bit table subfield. Among them, each bit in the BA Bitmap subfield corresponds to a T-SN of an MPDU. It should be noted that what is shown in FIG. 14 is only an example, and does not represent all possible implementation manners, and the protection scope of the present invention is not limited thereto.

In the implementation, the first sequence number type indication is located in the fragment number (Fragment Number) subfield in the start sequence control subfield, or in the identification information subfield of each flow in the block confirmation information field, or in the in the block acknowledgment control field of the BA frame described above. In a specific implementation, the first sequence number type indication occupies 1 bit. When the first sequence number type indication takes the first value, for example, when the first sequence number type indication takes a value of 1, it indicates that each bit of the block confirmation bit table subfield Each bit corresponds to a temporary sequence number of an MPDU in the A-MPDU; when the first sequence number type indicates a second value, for example, when the first sequence number type indicates a value of 0, the block confirmation bit table is indicated Each bit of the field corresponds to the sequence number of an MPDU in the A-MPDU. For the case where the first sequence number type indication is located in the per-flow identification information subfield in the acknowledgment information field, it can also be indicated by using a predefined value of the flow identification (TID) therein. For example, if the predefined value is 1111, when the TID is 1111, it means that the initial sequence number subfield in the current confirmation information field carries the initial temporary sequence number; otherwise, the initial sequence number subfield in the current confirmation information field Carried in is the starting sequence number. If only one BA Info field is included in the BA frame, the first sequence number type indication can also be located in the BA control field of the BA frame, for example, indicated by a 1-bit reserved bit in the BA control field. Further, a TID bit table can also be added in the BA control field, 1 indicates that the following subfield of the block confirmation bit table contains an acknowledgment for the MPDU of the corresponding TID. For example, the block acknowledgment bit table is 1001, which means that the subsequent block acknowledgment bit table subfield contains the confirmation of TID 1 and TID 4, which can simplify the processing after the data sender receives the BA frame.

In implementation, the block acknowledgment information field includes an initial sequence control subfield, and the initial sequence control subfield includes an initial temporary sequence number, and the initial temporary sequence number is used to indicate the first bit in the block acknowledgment bit table subfield bit corresponds to the temporary sequence number of the MPDU.

In a specific implementation, as shown in Figure 14, the start sequence control subfield includes a fragment number subfield and a start sequence number subfield, and the fragment number subfield occupies 4 bits, one of which is the first sequence number type indication, the remaining three bits are used to indicate the length of the block confirmation bit table; the start sequence number subfield occupies 12 bits, The start sequence number subfield carries the start temporary sequence number or the start sequence number, that is, the first sequence number type indicates that the first value is taken, that is, each bit of the block confirmation bit table subfield corresponds to an A-MPDU In the case of a temporary sequence number of an MPDU, the initial sequence number subfield carries the initial temporary sequence number. When the first sequence number type indicates the second value, it indicates the block confirmation bit table subfield When each bit corresponds to a sequence number of an MPDU in the A-MPDU, the start sequence number subfield carries the start sequence number.

In implementation, when each MPDU contained in the A-MPDU carries the first ESI used to identify the current interaction sequence, the BA frame carries the second ESI, and the second ESI is also used to identify the current interaction sequence, and The second ESI has the same value as the first ESI.

In implementation, the setting method of the second ESI includes but not limited to the following methods:

First, the second ESI is located in the per-flow identification information subfield in the block acknowledgment information field. As shown in FIG. 15, since the TID Value subfield of each flow identification information subfield in the block confirmation information field in the BA frame is a reserved field, the second ESI may be located in the TID Value subfield.

Specifically, when the first sequence number type indicates the first value, that is, when each bit of the block confirmation bit table subfield corresponds to the temporary sequence number of an MPDU in the A-MPDU, the TID Value subfield The field bears the second ESI; when the first sequence number type indicates the second value, it indicates that each bit of the block confirmation bit table subfield corresponds to the sequence number of an MPDU in the A-MPDU Next, the TID is carried in the TID Value subfield.

Second, the second ESI in the BA frame is located in the start sequence control subfield in the block acknowledgment information field.

In the implementation, when the length of the BA Bitmap is fixed and the T-SN corresponding to the first bit is also fixed, for example, the length of the BA Bitmap is always 64 bits, and the T-SN corresponding to the first bit is always zero. The initial temporary sequence number, that is, the initial sequence number subfield is a reserved field. In this case, the second ESI in the BA frame can be located in the initial sequence number subfield or the fragmentation number subfield in the initial sequence control subfield , for example, the second ESI is located in the first 3 bits or the last 3 bits of the fragment number subfield.

In implementation, if the length of the BA Bitmap is variable, for example, the specific length is indicated by the three bits in the fragment number subfield, then when the first sequence number type indicates the first value, it indicates the block confirmation bitmap subfield Each bit corresponds to the temporary sequence number of an MPDU in the A-MPDU Next, the initial sequence control subfield contains the initial temporary sequence number. Since the initial sequence control subfield has a length of 12 bits, and the initial temporary sequence number only needs 6 bits, it is also possible to use the initial sequence control subfield The remaining bits carry the second ESI.

Third, in the case that only one BA Info field is included in the BA frame, the second ESI can also be located in the block confirmation control field of the BA frame, or in the first 11 bits of each flow identification information subfield of the BA Info field, because In the case that the BA frame contains only one BA Info field, the first 11 bits of each flow identification information subfield are reserved bits.

In the implementation, the A-MPDU sent by the sender also carries an Ack Policy (Ack Policy). When the A-MPDU carries an Ack Policy of BA, the sender receives the BA frame replied by the receiver after sending the A-MPDU Before, the BAR frame is also sent to the receiving end; the receiving end receives the BAR frame sent by the sending end before replying the BA frame. Wherein, the time interval between the A-MPDU and the BAR frame is uncertain, but the time interval between the BAR frame and the BA frame is usually a predefined value.

In the implementation, each MPDU contained in the A-MPDU carries the first ESI, the first ESI is used to identify the current interaction sequence, the BA frame carries the second ESI, and the second ESI is used to identify the current interaction sequence; the BAR frame The third ESI is carried, and the third ESI is used to identify the current interaction sequence. The value of the third ESI is the same as that of the first ESI and the second ESI, indicating that the A-MPDU, the BAR frame and the BA frame belong to the same interaction sequence.

In implementation, the BAR frame also carries a second sequence number type indication, and the second sequence number type indication is used to indicate whether the BAR frame contains the third ESI.

Specifically, the second sequence number type indication is located in the BAR control field of the BAR frame, or in the block confirmation request information field corresponding to the receiving end included in the BAR frame.

In implementation, the third ESI setting method includes but not limited to the following methods:

First, the third ESI in the BAR frame is located in the per-flow identification information subfield in the block acknowledgment information field. As shown in Figure 16, since the TID Value subfield of each flow identification information subfield in the block confirmation request information field in the BAR frame is a reserved field, the third ESI may be located in the TID Value subfield.

Specifically, when the second serial number type indicates that the first value is taken, the initial serial number subfield in the BAR Info domain carries the temporary serial number, and the TID Value subfield carries the third ESI; when the second serial number When the column number type indicates the second value, the serial number is carried in the start sequence number subfield, and the TID is carried in the TID Value subfield.

Second, the third ESI in the BAR frame is located in the start sequence control subfield in the block acknowledgment information field.

In the implementation, when the length of the BA Bitmap is fixed and the T-SN corresponding to the first bit is also fixed, for example, the length of the BA Bitmap is always 64 bits, and the T-SN corresponding to the first bit is always zero. There is no need to indicate the starting temporary sequence number, that is, the starting sequence number subfield is a reserved field. In this case, the third ESI in the BAR frame can be located in the starting sequence number subfield in the starting sequence control subfield or the fragment number In the subfield, for example, the third ESI is located in the first 3 bits or the last 3 bits of the fragment number subfield.

Third, in the case where only one BAR Info field is included in the BAR frame, the third ESI can also be located in the block confirmation request control (BAR Control) field of the BAR frame, or in front of each flow identification information subfield of the BAR Info field Among the 11 bits, because when the BAR frame contains only one BAR Info field, the first 11 bits of each flow identification information subfield are reserved.

In the implementation, after sending the A-MPDU, the sender also receives the BA frame replied by the block sender, the BA frame contains the block confirmation information field corresponding to the sender, and the block confirmation information field contains the block confirmation bit table subfield, and the block acknowledgment information field contains a first sequence number type indication, and the first sequence number type indication is used to indicate that each bit of the block acknowledgment bit table subfield corresponds to the temporary of one MPDU in the A-MPDU Sequence number: The sender judges whether the MPDU corresponding to the temporary sequence number corresponding to each bit is received correctly according to the value of each bit in the block confirmation bit table subfield.

Specifically, the sending end saves the mapping relationship between T-SN and SN of each MPDU in the A-MPDU. When the sending end receives the BA frame sent by the receiving end and the type of the first sequence number contained therein indicates that it takes the first value, it indicates that each bit of the block confirmation bit table subfield corresponds to one MPDU in the A-MPDU In the case of temporary sequence numbers, the sending end can determine which MPDUs corresponding to SNs are correctly received by the receiving end according to the mapping relationship between T-SN and SN and the value of each bit in the block confirmation bit table subfield. That is, the sending end receives the BA frame sent by the receiving end, and each bit of the BA Bitmap contained in the BA frame corresponds to a T-SN. Since the sending end knows the corresponding relationship between T-SN and SN, it can be based on the BA Bitmap The value of each bit in the SN determines which MPDUs corresponding to the SNs are received Receiver receives correctly. Note that for the case where the T-SN is carried by the sequence control field, the sending end does not need to save the mapping relationship between the T-SN and the SN, because in this case the T-SN and the SN of the MPDU are the same.

It should be noted that, in the above embodiment, when the UL MU transmission is confirmed, the BA frame may contain BA Info corresponding to multiple STAs, but not every BA Info uses T-SN. For example, the UL A-MPDU of a certain STA has a single TID, or the UL A-MPDU has multiple TIDs, but the AP only parses the MPDU of one TID. Similarly, when the DL MU transmission mode is confirmed, the BAR frame sent by the AP also has a similar situation, that is, not all of the multiple BAR Info in the BAR frame contain T-SN.

It should be noted that the solution provided by the embodiment of the present invention can be applied to the confirmation of the multi-TID A-MPDU sent by the receiving end to a single STA, and can also be applied to the multi-TID A-MPDU sent by the receiving end to multiple STAs in MU mode. A-MPDU and acknowledgment, and also applicable to A-MPDU transmission and acknowledgment where MPDU and fragment coexist. Wherein, the MPDU is identified by the serial number, and the MPDU fragment is identified by <serial number, fragmentation number>. At this time, the MPDU and the MPDU fragment can be uniformly numbered by the temporary serial number. MPDUs and MPDU fragments may be of the same TID or of different TIDs. Moreover, if the MPDUs contained in the A-MPDU are sent to different target devices, and the MPDUs contained in the A-MPDU have different TIDs, there may be MPDU fragments, and the solution provided by the embodiment of the present invention may also be used These MPDUs and MPDU fragments are uniformly numbered.

Based on the same inventive concept, the embodiment of the present invention also provides a data sending device. The specific implementation of the device can refer to the description about the sending end in the above method embodiment, and the repetition will not be repeated. As shown in Figure 17, the The device mainly includes:

The configuration module 1501 is configured to separately configure the temporary sequence number of each MPDU contained in the A-MPDU, the A-MPDU includes a plurality of MPDUs, and the temporary sequence numbers of any two MPDUs contained in the A-MPDU are different, wherein , the TIDs of at least two MPDUs in the A-MPDU are different, and/or, at least one MPDU contains fragments;

The sending module 1502 is configured to send the A-MPDU after the configuration module 1501 configures the temporary sequence number.

In implementation, the configuration module 1501 is specifically configured to: carry the corresponding temporary sequence number in each MPDU contained in the A-MPDU; or, carry the corresponding temporary sequence number in each MPDU except the first MPDU of the A-MPDU The corresponding temporary sequence number, the first MPDU does not carry the temporary sequence number, and the temporary sequence number corresponding to the first MPDU is a predefined value.

During implementation, for the manner of carrying the temporary sequence number of each MPDU in the A-MPDU, reference may be made to the description in the method embodiment, which will not be repeated here.

In implementation, the A-MPDU also carries a temporary sequence number existence indication, and the temporary sequence number existence indication is used to indicate whether the temporary sequence number exists. For the carrying manner of the presence indication of the temporary sequence number in the A-MPDU, reference may be made to the description in the method embodiment, and details are not repeated here.

In implementation, the device further includes a receiving module 1503, configured to receive a BA frame, the BA frame includes a block acknowledgment information field corresponding to the sending end, the block acknowledgment information field includes a block acknowledgment bit table subfield, and the block acknowledgment information The field includes a first sequence number type indication, and the first sequence number type indication is used to indicate that each bit of the block confirmation bit table subfield corresponds to a temporary sequence number of an MPDU in the A-MPDU; the device also A processing module 1504 is included, which is used to judge whether the MPDU corresponding to the temporary sequence number corresponding to each bit is correctly received according to the value of each bit in the block acknowledgment bit table subfield in the BA frame received by the receiving module 1503 .

During implementation, the processing module 1504 is specifically used to determine the corresponding Whether the MPDU corresponding to the temporary sequence number is received correctly.

In the implementation, the block acknowledgment information field in the BA frame also includes a start sequence control subfield, and the start sequence control subfield includes a start temporary sequence number, and the start temporary sequence number is used to indicate the The temporary sequence number of the MPDU corresponding to the first bit in the subfield of the block confirmation bit table.

For the carrying manner indicated by the type of the first serial number, reference may be made to the description of the method embodiment, and details are not repeated here.

In the implementation, each MPDU contained in the A-MPDU carries the first interaction sequence identifier ESI, and the first ESI is used to identify the current interaction sequence; the BA frame carries the second interaction sequence identifier ESI, and the second ESI is used for Identifies the current interaction sequence, and the value of the second ESI is the same as that of the first ESI.

During implementation, the manner in which the first ESI is carried in the A-MPDU and the manner in which the second ESI is carried in the BA frame can refer to the description in the method embodiment, and will not be repeated here.

In implementation, the sending module 1502 is further configured to send a block acknowledgment request BAR frame after sending the A-MPDU and before the receiving module 1503 receives the BA frame.

Wherein, the BAR frame carries the third ESI, the third ESI is used to identify the current interaction sequence, and the value of the third ESI is the same as that of the first ESI. For the manner of carrying the third ESI in the BAR frame, reference may be made to the description in the method embodiment, and details are not repeated here.

In implementation, the BAR frame also carries a second sequence number type indication, and the second sequence number type indication is used to indicate whether the BAR frame contains the third ESI. For the manner in which the type indication of the second sequence number is carried in the BAR frame, reference may be made to the description in the method embodiment, and details are not repeated here.

Based on the same inventive concept, an embodiment of the present invention also provides a device for confirming data reception. For the specific implementation of the device, please refer to the description of the method embodiment. include:

The receiving module 1601 is configured to receive the A-MPDU sent by the sending end, each MPDU contained in the A-MPDU is configured with a corresponding temporary sequence number, the A-MPDU includes multiple MPDUs, and the A-MPDU contained in the A-MPDU The temporary sequence numbers of any two MPDUs are different, wherein at least two MPDUs in the A-MPDU have different flow identifier TIDs, and/or at least one MPDU contains fragments;

The sending module 1602 is configured to send a block acknowledgment BA frame, the BA frame includes a block acknowledgment information field corresponding to the sending end, the block acknowledgment information field includes a block acknowledgment bit table subfield, and the block acknowledgment information field includes the first A sequence number type indication, where the first sequence number type indication is used to indicate that each bit of the block acknowledgment bit table subfield corresponds to a temporary sequence number of an MPDU in the A-MPDU.

In the implementation, each MPDU contained in the A-MPDU is configured with a corresponding temporary sequence number, specifically: each MPDU contained in the A-MPDU carries a corresponding temporary sequence number; or, except for the first Each MPDU other than the first MPDU carries a temporary sequence number, the first MPDU does not carry a temporary sequence number, and the temporary sequence number corresponding to the first MPDU is a predefined value.

During implementation, for the manner of carrying the temporary sequence number of each MPDU in the A-MPDU, reference may be made to the description in the method embodiment, which will not be repeated here.

In implementation, the A-MPDU also carries a temporary sequence number existence indication, and the temporary sequence number existence indication is used to indicate whether the temporary sequence number exists. The manner of carrying the existence indication of the temporary sequence number in the A-MPDU can refer to the description in the method part, and will not be repeated here.

In implementation, the block acknowledgment information field of the BA frame also includes an initial sequence control subfield, and the initial sequence control subfield includes an initial temporary sequence number, and the initial temporary sequence number is used to indicate the block acknowledgment bit of the BA frame The temporary sequence number of the MPDU corresponding to the first bit in the table subfield.

During implementation, the manner in which the type indication of the first sequence number is carried in the BA frame can refer to the description in the method part, and will not be repeated here.

In an implementation, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the first ESI is used to identify a current interaction sequence. The BA frame carries the second interaction sequence identifier ESI, where the second ESI is used to identify the current interaction sequence, and the value of the second ESI is the same as that of the first ESI.

For the manner of carrying the first ESI in the A-MPDU and the manner of carrying the second ESI in the BA frame, refer to the description in the method embodiments, and details are not repeated here.

In implementation, the receiving module 1601 is also used for:

After receiving the A-MPDU, before the sending module 1602 sends the BA frame, receive the block acknowledgment request BAR frame sent by the sending end.

In implementation, the BAR frame carries a third ESI, the third ESI is used to identify the current interaction sequence, and the third ESI has the same value as the first ESI and the second ESI.

During implementation, for the manner of carrying the third ESI in the BAR frame, reference may be made to the description in the method embodiments, which will not be repeated here.

In an implementation, the BAR frame also carries a second sequence number type indication, and the second sequence number type indication is used to indicate whether the BAR frame includes the third ESI. For the manner in which the type indication of the second sequence number is carried in the BAR frame, reference may be made to the description in the method embodiments, which will not be repeated here.

Based on the same inventive concept, an embodiment of the present invention also provides a device. For the specific implementation of the device, please refer to the description of the sending end in the above method embodiment, and the repetition will not be repeated, as shown in As shown in Figure 19, the device mainly includes a processor 1701, a memory 1702 and a transceiver 1703, wherein the transceiver 1703 receives and sends data under the control of the processor 1701, and the memory 1702 stores preset programs, and the processor 1701 Read the program in the memory 1702, and execute the following process according to the program:

Separately configure the temporary sequence number of each MPDU contained in the A-MPDU, the A-MPDU includes multiple MPDUs, and the temporary sequence numbers of any two MPDUs contained in the A-MPDU are different, wherein the A-MPDU At least two MPDUs have different TIDs, and/or at least one MPDU contains fragments;

The A-MPDU configured with the temporary sequence number is sent through the transceiver 1703 .

In an implementation, the processor 1701 is specifically configured to: carry a corresponding temporary sequence number in each MPDU included in the A-MPDU; or, carry a temporary sequence number in each MPDU except the first MPDU of the A-MPDU The corresponding temporary sequence number, the first MPDU does not carry the temporary sequence number, and the temporary sequence number corresponding to the first MPDU is a predefined value.

During implementation, for the manner of carrying the temporary sequence number of each MPDU in the A-MPDU, reference may be made to the description in the method embodiment, which will not be repeated here.

In implementation, the A-MPDU also carries a temporary sequence number existence indication, and the temporary sequence number existence indication is used to indicate whether the temporary sequence number exists. For the carrying manner of the presence indication of the temporary sequence number in the A-MPDU, reference may be made to the description in the method embodiment, and details are not repeated here.

In implementation, the processor 1701 is used to receive the BA frame through the transceiver 1703. The BA frame includes a block confirmation information field corresponding to the sending end, the block confirmation information field includes a block confirmation bit table subfield, and the block confirmation information field contains the first sequence number type indication, the first sequence number type indication is used to indicate that each bit of the block acknowledgment bit table subfield corresponds to the temporary sequence number of one MPDU in the A-MPDU; The block in the BA frame confirms the value of each bit in the subfield of the bit table, and judges whether the MPDU corresponding to the temporary sequence number corresponding to each bit is received correctly.

During implementation, the processor 1701 is specifically configured to determine the corresponding Whether the MPDU corresponding to the temporary sequence number is received correctly.

In the implementation, the block acknowledgment information field in the BA frame also includes a start sequence control subfield, and the start sequence control subfield includes a start temporary sequence number, and the start temporary sequence number is used to indicate the The temporary sequence number of the MPDU corresponding to the first bit in the subfield of the block confirmation bit table.

For the carrying manner indicated by the type of the first serial number, reference may be made to the description of the method embodiment, and details are not repeated here.

In the implementation, each MPDU contained in the A-MPDU carries the first interaction sequence identifier ESI, and the first ESI is used to identify the current interaction sequence; the BA frame carries the second interaction sequence identifier ESI, and the second ESI is used for Identifies the current interaction sequence, and the value of the second ESI is the same as that of the first ESI.

During implementation, the manner in which the first ESI is carried in the A-MPDU and the manner in which the second ESI is carried in the BA frame can refer to the description in the method embodiment, and will not be repeated here.

In an implementation, the processor 1701 instructs the transceiver 1703 to send a block acknowledgment request BAR frame after sending the A-MPDU and before receiving the BA frame.

Wherein, the BAR frame carries the third ESI, the third ESI is used to identify the current interaction sequence, and the value of the third ESI is the same as that of the first ESI. For the manner of carrying the third ESI in the BAR frame, reference may be made to the description in the method embodiment, and details are not repeated here.

In implementation, the BAR frame also carries a second sequence number type indication, and the second sequence number type indication is used to indicate whether the BAR frame contains the third ESI. For the manner in which the type indication of the second sequence number is carried in the BAR frame, reference may be made to the description in the method embodiment, and details are not repeated here.

Based on the same inventive concept, another device is provided in the embodiment of the present invention. For the specific implementation of this device, please refer to the description about the receiving end in the above-mentioned method embodiment, and the repetition will not be repeated. As shown in Figure 20, the device It mainly includes a processor 1801, a memory 1802 and a transceiver 1803, wherein the transceiver 1803 receives and sends data under the control of the processor 1801, the memory 1802 stores a preset program, and the processor 1801 reads the program in the memory 1802 , follow the procedure to perform the following procedure:

The A-MPDU sent by the sender is received by the transceiver 1803. Each MPDU contained in the A-MPDU is configured with a corresponding temporary sequence number. The A-MPDU includes multiple MPDUs. Any two MPDUs contained in the A-MPDU The temporary sequence numbers of the MPDUs are different, where the A-MPDU There are at least two MPDUs in which the flow identifier TID is different, and/or, at least one MPDU contains fragments;

The block acknowledgment BA frame is sent by the transceiver 1803, the BA frame includes a block acknowledgment information field corresponding to the sending end, the block acknowledgment information field includes a block acknowledgment bit table subfield, and the block acknowledgment information field includes the first sequence Number type indication, the first sequence number type indication is used to indicate that each bit of the block acknowledgment bit table subfield corresponds to a temporary sequence number of an MPDU in the A-MPDU.

In the implementation, each MPDU contained in the A-MPDU is configured with a corresponding temporary sequence number, specifically: each MPDU contained in the A-MPDU carries a corresponding temporary sequence number; or, except for the first Each MPDU other than the first MPDU carries a temporary sequence number, the first MPDU does not carry a temporary sequence number, and the temporary sequence number corresponding to the first MPDU is a predefined value.

During implementation, for the manner of carrying the temporary sequence number of each MPDU in the A-MPDU, reference may be made to the description in the method embodiment, which will not be repeated here.

In implementation, the A-MPDU also carries a temporary sequence number existence indication, and the temporary sequence number existence indication is used to indicate whether the temporary sequence number exists. The manner of carrying the existence indication of the temporary sequence number in the A-MPDU can refer to the description in the method part, and will not be repeated here.

In implementation, the block acknowledgment information field of the BA frame also includes an initial sequence control subfield, and the initial sequence control subfield includes an initial temporary sequence number, and the initial temporary sequence number is used to indicate the block acknowledgment bit of the BA frame The temporary sequence number of the MPDU corresponding to the first bit in the table subfield.

During implementation, the manner in which the type indication of the first sequence number is carried in the BA frame can refer to the description in the method part, and will not be repeated here.

In an implementation, each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, and the first ESI is used to identify a current interaction sequence. The BA frame carries the second interaction sequence identifier ESI, where the second ESI is used to identify the current interaction sequence, and the value of the second ESI is the same as that of the first ESI.

For the manner of carrying the first ESI in the A-MPDU and the manner of carrying the second ESI in the BA frame, refer to the description in the method embodiments, and details are not repeated here.

In implementation, the processor 1801 instructs the transceiver 1803 to send a BA after receiving the A-MPDU Before the frame, receive the Block Acknowledgment Request BAR frame sent by the sender.

In implementation, the BAR frame carries a third ESI, the third ESI is used to identify the current interaction sequence, and the third ESI has the same value as the first ESI and the second ESI.

During implementation, for the manner of carrying the third ESI in the BAR frame, reference may be made to the description in the method embodiments, which will not be repeated here.

In an implementation, the BAR frame also carries a second sequence number type indication, and the second sequence number type indication is used to indicate whether the BAR frame includes the third ESI. For the manner in which the type indication of the second sequence number is carried in the BAR frame, reference may be made to the description in the method embodiments, which will not be repeated here.

Based on the above technical solution, in the embodiment of the present invention, when at least two MPDUs in the A-MPDU have different TIDs and/or at least one MPDU contains fragments, the sender configures the A-MPDU contained in the The temporary serial number of each MPDU, the temporary serial number of all MPDUs in the A-MPDU is a unified number, to ensure that the temporary serial numbers of any two MPDUs contained in the A-MPDU are different, so that the receiving end replies to BA frame, according to the temporary sequence number of each MPDU in the A-MPDU, a block confirmation information field can be used to confirm all the MPDUs in the A-MPDU in the BA frame, thereby reducing the transmission overhead of the BA frame and solving the problem of identified difficult issues.

Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer program products. Accordingly, the present invention can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a To realize the function specified in one or more processes of the flowchart and/or one or more blocks of the block diagram device.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (88)

1. A kind of data transmission method for uplink characterized by comprising

   The interim sequence number for each media access control protocol data unit MPDU for including in aggregated media access control protocol data cell A-MPDU is respectively configured in transmitting terminal, the interim sequence number for any two MPDU for including in the A-MPDU is not identical, wherein, traffic identifier TID in the A-MPDU at least there are two MPDU is not identical, it and/or include fragment at least one MPDU；

   The transmitting terminal sends the A-MPDU after configuring interim sequence number.
2. The method as described in claim 1, which is characterized in that the interim sequence number for each media access control protocol data unit MPDU for including in aggregated media access control protocol data cell A-MPDU is respectively configured in the transmitting terminal, comprising:

   Corresponding interim sequence number is carried in each MPDU that the transmitting terminal includes in the A-MPDU；Alternatively,

   The transmitting terminal carries corresponding interim sequence number in each MPDU in addition to first MPDU except the A-MPDU, does not carry interim sequence number, and the corresponding interim Serial No. predefined value of first MPDU in first MPDU.
3. Method according to claim 2, it is characterized in that, the interim serial number bit is in the media access control MAC head of the MPDU, perhaps in the counter mode cypher block chaining in the MPDU delimiter of the MPDU or positioned at MPDU message authentication code agreement CCMP.
4. Method as claimed in claim 3, it is characterized in that, high efficiency HE control domain of the interim serial number bit in the MAC header of the MPDU, or the service quality QoS control domain in the MAC header of the MPDU, perhaps in the frame control domain in the MAC header of the MPDU or in the sequence control domain in the MAC header of the MPDU.
5. Method according to any of claims 1-4, which is characterized in that also carry interim sequence number in the A-MPDU and there is instruction, the interim sequence number is used to indicate whether that there are the interim sequence numbers in the presence of instruction.
6. Method as claimed in claim 5, which is characterized in that there are indicating bits for the interim sequence number In the physical header of the A-MPDU；Alternatively,

   There is instruction and be located in the corresponding MPDU delimiter of each MPDU that the A-MPDU includes in the interim sequence number；Alternatively,

   There is instruction and be located in the media access control MAC head for each MPDU that the A-MPDU includes in the interim sequence number；Alternatively,

   There is instruction and be located in the CCMP head for each MPDU that the A-MPDU includes in the interim sequence number.
7. Method as claimed in claim 6, it is characterized in that, there is high efficiency HE control domain of the instruction in the MAC header of the MPDU in the interim sequence number, perhaps the service quality QoS control domain in the MAC header of the MPDU or in the frame control domain in the MAC header of MPDU.
8. The method according to claim 1 to 7, which is characterized in that the first interaction sequence mark ESI, the first ESI are carried in each MPDU for including in the A-MPDU for identifying current interaction sequence.
9. Method according to claim 8, it is characterized in that, first ESI is located at the frame control domain of each MPDU in the A-MPDU, or in the A-MPDU each MPDU service quality QoS control domain, or in the A-MPDU each MPDU high efficiency HE control domain, perhaps it is located in the corresponding MPDU delimiter of each MPDU in the A-MPDU or in physical layer PHY of the A-MPDU.
10. The method according to claim 1 to 7, which is characterized in that after the transmitting terminal sends the A-MPDU after configuring interim sequence number, the method also includes:

    The transmitting terminal receives block and confirms BA frame, it include corresponding with the transmitting terminal piece of confirmation message domain in the BA frame, it include block acknowledgement bit table subdomain in described piece of confirmation message domain, and indicated in described piece of confirmation message domain comprising First ray type, each bit that the First ray type instruction is used to indicate described piece of acknowledgement bit table subdomain respectively corresponds to the interim sequence number of a MPDU in the A-MPDU；

    The transmitting terminal judges each ratio according to the value of each bit in described piece of acknowledgement bit table subdomain Whether the corresponding MPDU of special corresponding interim sequence number is correctly received.
11. Method as claimed in claim 10, which is characterized in that the transmitting terminal judges whether the corresponding MPDU of the corresponding interim sequence number of each bit is correctly received according to the value of each bit in described piece of acknowledgement bit table subdomain, comprising:

    The transmitting terminal judges whether the corresponding MPDU of the corresponding interim sequence number of each bit is correctly received according to the value of each bit in the corresponding relationship and described piece of acknowledgement bit table subdomain between the interim sequence number and sequence number of each of preservation MPDU.
12. Method as claimed in claim 10, it is characterized in that, it further include homing sequence control subdomain in described piece of confirmation message domain, it include originating interim sequence number in the homing sequence control subdomain, the interim sequence number of starting is used to indicate the interim sequence number of the corresponding MPDU of the first bit in described piece of acknowledgement bit table subdomain.
13. Method as claimed in claim 12, which is characterized in that the First ray type instruction is located in the fragment work song domain in homing sequence control subdomain, or, in every flow identification information subdomain in described piece of confirmation message domain, alternatively, being located in the block confirmation control domain of the BA frame.
14. Method as claimed in claim 13, it is characterized in that, it include traffic identifier in every flow identification information subdomain, the First ray type instruction is located in every flow identification information subdomain in described piece of confirmation message domain, it include: that the First ray type is designated as the traffic identifier, when the traffic identifier is predefined value, indicate that in the homing sequence control subdomain in described piece of confirmation message domain include originating interim sequence number.
15. Such as the described in any item methods of claim 10-14, which is characterized in that carry the first interaction sequence mark ESI, the first ESI in each MPDU for including in the A-MPDU for identifying current interaction sequence；

    The second interaction sequence mark ESI, the 2nd ESI are carried in the BA frame for identifying current interaction sequence, the 2nd ESI is identical as the value of the first ESI.
16. Method as claimed in claim 15, which is characterized in that the 2nd ESI is located in every flow identification information subdomain in described piece of confirmation message domain, alternatively, in the homing sequence control subdomain being located in described piece of confirmation message domain.
17. Method as claimed in claim 15, which is characterized in that the 2nd ESI is located at the block confirmation control domain of the BA frame.
18. Such as the described in any item methods of claim 10-14, which is characterized in that after the transmitting terminal sends the A-MPDU, before receiving the BA frame, the method also includes:

    The transmitting terminal transmission block confirmation request BAR frame.
19. Method as claimed in claim 18, which is characterized in that the first interaction sequence mark ESI, the first ESI are carried in each MPDU for including in the A-MPDU for identifying current interaction sequence；

    The 3rd ESI is carried in the BAR frame, for the 3rd ESI for identifying current interaction sequence, the 3rd ESI is identical as the value of the first ESI.
20. Method as claimed in claim 19, it is characterized in that, it include corresponding with receiving end piece of confirmation request information field in the BAR frame, the 3rd ESI is located in every flow identification information subdomain in described piece of confirmation request information field or block confirmation request starting sequence number control subdomain.
21. Method as claimed in claim 19, which is characterized in that include BAR control domain in the BAR frame, the 3rd ESI is located at the BAR control domain.
22. Such as the described in any item methods of claim 19-21, which is characterized in that also carry the instruction of the second serial number type in the BAR frame, whether the second serial number type instruction is used to indicate in the BAR frame comprising the 3rd ESI.
23. Method as claimed in claim 22, which is characterized in that the second serial number type instruction is located in the BAR control domain of the BAR frame, alternatively, being located in corresponding with the receiving end piece of confirmation request information field in the BAR frame included.
24. A kind of data reception acknowledgement method characterized by comprising

    Receiving end receives the aggregated media access control protocol data cell A-MPDU that transmitting terminal is sent, the each media access control protocol data unit MPDU for including in the A-MPDU is each configured with corresponding interim sequence number, the interim sequence number for any two MPDU for including in the A-MPDU is not identical, wherein, traffic identifier TID in the A-MPDU at least there are two MPDU is not identical, it and/or include fragment at least one MPDU；

    The receiving end transmission block confirms BA frame, it include corresponding with the transmitting terminal piece of confirmation message domain in the BA frame, it include block acknowledgement bit table subdomain in described piece of confirmation message domain, and indicated in described piece of confirmation message domain comprising First ray type, each bit that the First ray type instruction is used to indicate described piece of acknowledgement bit table subdomain respectively corresponds to the interim sequence number of a MPDU in the A-MPDU.
25. Method as claimed in claim 24, which is characterized in that each media access control protocol data unit MPDU for including in the A-MPDU is each configured with corresponding interim sequence number, specifically:

    Corresponding interim sequence number is carried in each MPDU for including in the A-MPDU；Alternatively,

    Interim sequence number is carried in each MPDU in addition to first MPDU of the A-MPDU, does not carry interim sequence number, and the corresponding interim Serial No. predefined value of first MPDU in first MPDU.
26. Method as claimed in claim 25, which is characterized in that the interim serial number bit is in the media access control MAC head of the MPDU, perhaps in the CCMP head in the MPDU delimiter of the MPDU or positioned at the MPDU.
27. Method as claimed in claim 26, it is characterized in that, high efficiency HE control domain of the interim serial number bit in the MAC header of the MPDU, or the service quality QoS control domain in the MAC header of the MPDU, perhaps in the frame control domain in the MAC header of the MPDU or in the sequence control domain in the MAC header of the MPDU.
28. Such as the described in any item methods of claim 24-27, which is characterized in that also carry interim sequence number in the A-MPDU and there is instruction, the interim sequence number is used to indicate whether that there are the interim sequence numbers in the presence of instruction.
29. Method as claimed in claim 28, which is characterized in that the interim sequence number has instruction in the physical header of the A-MPDU；Alternatively,

    There is instruction and be located in the corresponding MPDU delimiter of each MPDU that the A-MPDU includes in the interim sequence number；Alternatively,

    There is instruction and connect positioned at the media of the A-MPDU each MPDU for including in the interim sequence number Enter to control in MAC header；Alternatively,

    There is instruction and be located in the CCMP head for each MPDU that the A-MPDU includes in the interim sequence number.
30. Method as claimed in claim 29, it is characterized in that, there is high efficiency HE control domain of the instruction in the MAC header of the MPDU in the interim sequence number, perhaps the service quality QoS control domain in the MAC header of the MPDU or in the frame control domain in the MAC header of MPDU.
31. Such as the described in any item methods of claim 24-30, which is characterized in that carry the first interaction sequence mark ESI, the first ESI in each MPDU for including in the A-MPDU for identifying current interaction sequence.
32. Method as claimed in claim 31, it is characterized in that, first ESI is located at the frame control domain of each MPDU in the A-MPDU, or in the A-MPDU each MPDU service quality QoS control domain, or in the A-MPDU each MPDU high efficiency HE control domain, perhaps it is located in the corresponding MPDU delimiter of each MPDU in the A-MPDU or in physical layer PHY of the A-MPDU.
33. As right wants the described in any item methods of 24-30, it is characterized in that, it further include homing sequence control subdomain in described piece of confirmation message domain, it include originating interim sequence number in the homing sequence control subdomain, the interim sequence number of starting is used to indicate the interim sequence number of the corresponding MPDU of the first bit in described piece of acknowledgement bit table subdomain.
34. Method as claimed in claim 33, which is characterized in that the First ray type instruction is located in the fragment work song domain in homing sequence control subdomain, or, in every flow identification information subdomain in described piece of confirmation message domain, alternatively, being located in the block confirmation control domain of the BA frame.
35. Method as claimed in claim 34, it is characterized in that, it include traffic identifier in every flow identification information subdomain, the First ray type instruction is located in every flow identification information subdomain in described piece of confirmation message domain, it include: that the First ray type is designated as the traffic identifier, when the traffic identifier is predefined value, indicate that in the homing sequence control subdomain in described piece of confirmation message domain include originating interim sequence number.
36. Method as described in claim 33 or 35, which is characterized in that the first interaction sequence mark ESI, the first ESI are carried in each MPDU for including in the A-MPDU for identifying current interaction sequence；

    The second interaction sequence mark ESI, the 2nd ESI are carried in the BA frame for identifying current interaction sequence, the 2nd ESI is identical as the value of the first ESI.
37. Method as claimed in claim 36, which is characterized in that the 2nd ESI is located in every flow identification information subdomain in described piece of confirmation message domain, alternatively, in the homing sequence control subdomain being located in described piece of confirmation message domain.
38. Method as claimed in claim 36, which is characterized in that the 2nd ESI is located at the block confirmation control domain of the BA frame.
39. Method as claimed in claim 24, which is characterized in that after the receiving end receives the A-MPDU, before sending the BA frame, the method also includes:

    The receiving end receives the block confirmation request BAR frame that the transmitting terminal is sent.
40. Method as claimed in claim 39, which is characterized in that the first interaction sequence mark ESI, the first ESI are carried in each MPDU for including in the A-MPDU for identifying current interaction sequence；

    The second interaction sequence mark ESI, the 2nd ESI are carried in the BA frame for identifying current interaction sequence；

    The 3rd ESI is carried in the BAR frame, for the 3rd ESI for identifying current interaction sequence, the 3rd ESI is identical as the value of the first ESI and the 2nd ESI.
41. Method as claimed in claim 40, it is characterized in that, it include corresponding with receiving end piece of confirmation request information field in the BAR frame, the 3rd ESI is located in every flow identification information subdomain in described piece of confirmation request information field or block confirmation request starting sequence number control subdomain.
42. Method as claimed in claim 40, which is characterized in that include BAR control domain in the BAR frame, the 3rd ESI is located at the BAR control domain.
43. Such as the described in any item methods of claim 40-42, which is characterized in that also carry the instruction of the second serial number type in the BAR frame, the second serial number type instruction is used to indicate the BAR frame In whether include the 3rd ESI.
44. Method as claimed in claim 43, which is characterized in that the second serial number type instruction is located in the BAR control domain of the BAR frame, alternatively, being located in corresponding with the receiving end piece of confirmation request information field in the BAR frame included.
45. A kind of data sending device characterized by comprising

    Configuration module, for the interim sequence number for each media access control protocol data unit MPDU for including in aggregated media access control protocol data cell A-MPDU to be respectively configured, the interim sequence number for any two MPDU for including in the A-MPDU is not identical, wherein, traffic identifier TID in the A-MPDU at least there are two MPDU is not identical, it and/or include fragment at least one MPDU；

    Sending module, for sending the A-MPDU after the configuration module configures interim sequence number.
46. Device as claimed in claim 45, which is characterized in that the configuration module is specifically used for:

    Corresponding interim sequence number is carried in each MPDU for including in the A-MPDU；Alternatively,

    Corresponding interim sequence number is carried in each MPDU in addition to first MPDU except the A-MPDU, does not carry interim sequence number, and the corresponding interim Serial No. predefined value of first MPDU in first MPDU.
47. Device as claimed in claim 46, which is characterized in that the interim serial number bit is in the media access control MAC head of the MPDU, perhaps in the CCMP head in the MPDU delimiter of the MPDU or positioned at the MPDU.
48. Device as claimed in claim 47, it is characterized in that, high efficiency HE control domain of the interim serial number bit in the MAC header of the MPDU, or the service quality QoS control domain in the MAC header of the MPDU, perhaps in the frame control domain in the MAC header of the MPDU or in the sequence control domain in the MAC header of the MPDU.
49. Such as the described in any item devices of claim 45-48, which is characterized in that also carry interim sequence number in the A-MPDU and there is instruction, the interim sequence number is used to indicate whether that there are the interim sequence numbers in the presence of instruction.
50. Device as claimed in claim 49, which is characterized in that the interim sequence number has instruction in the physical header of the A-MPDU；Alternatively,

    There is instruction and be located in the corresponding MPDU delimiter of each MPDU that the A-MPDU includes in the interim sequence number；Alternatively,

    There is instruction and be located in the media access control MAC head for each MPDU that the A-MPDU includes in the interim sequence number；Alternatively,

    There is instruction and be located in the CCMP head for each MPDU that the A-MPDU includes in the interim sequence number.
51. Device as claimed in claim 50, it is characterized in that, there is high efficiency HE control domain of the instruction in the MAC header of the MPDU in the interim sequence number, perhaps the service quality QoS control domain in the MAC header of the MPDU or in the frame control domain in the MAC header of MPDU.
52. Such as the described in any item devices of claim 45-51, which is characterized in that carry the first interaction sequence mark ESI, the first ESI in each MPDU for including in the A-MPDU for identifying current interaction sequence.
53. Device as claimed in claim 52, it is characterized in that, first ESI is located at the frame control domain of each MPDU in the A-MPDU, or in the A-MPDU each MPDU service quality QoS control domain, or in the A-MPDU each MPDU high efficiency HE control domain, perhaps it is located in the corresponding MPDU delimiter of each MPDU in the A-MPDU or in physical layer PHY of the A-MPDU.
54. Such as the described in any item devices of claim 45-51, which is characterized in that further include receiving module, be used for:

    It receives block and confirms BA frame, it include corresponding with the transmitting terminal piece of confirmation message domain in the BA frame, it include block acknowledgement bit table subdomain in described piece of confirmation message domain, and indicated in described piece of confirmation message domain comprising First ray type, each bit that the First ray type instruction is used to indicate described piece of acknowledgement bit table subdomain respectively corresponds to the interim sequence number of a MPDU in the A-MPDU；

    Further include processing module, be used for:

    According to the value of each bit in described piece of acknowledgement bit table subdomain in the received BA frame of the receiving module, judge whether the corresponding MPDU of the corresponding interim sequence number of each bit is correctly received.
55. Device as claimed in claim 54, which is characterized in that the processing module is specifically used for:

    According to the value of each bit in the corresponding relationship and described piece of acknowledgement bit table subdomain between the interim sequence number and sequence number of each of preservation MPDU, judge whether the corresponding MPDU of the corresponding interim sequence number of each bit is correctly received.
56. Device as claimed in claim 54, it is characterized in that, it further include homing sequence control subdomain in described piece of confirmation message domain, it include originating interim sequence number in the homing sequence control subdomain, the interim sequence number of starting is used to indicate the interim sequence number of the corresponding MPDU of the first bit in described piece of acknowledgement bit table subdomain.
57. Device as claimed in claim 56, which is characterized in that the First ray type instruction is located in the fragment work song domain in homing sequence control subdomain, or, in every flow identification information subdomain in described piece of confirmation message domain, alternatively, being located in the block confirmation control domain of the BA frame.
58. Method as claimed in claim 57, it is characterized in that, it include traffic identifier in every flow identification information subdomain, the First ray type instruction is located in every flow identification information subdomain in described piece of confirmation message domain, it include: that the First ray type is designated as the traffic identifier, when the traffic identifier is predefined value, indicate that in the homing sequence control subdomain in described piece of confirmation message domain include originating interim sequence number.
59. Such as the described in any item devices of claim 54-58, which is characterized in that carry the first interaction sequence mark ESI, the first ESI in each MPDU for including in the A-MPDU for identifying current interaction sequence；

    The second interaction sequence mark ESI, the 2nd ESI are carried in the BA frame for identifying current interaction sequence, the 2nd ESI is identical as the value of the first ESI.
60. Device as claimed in claim 59, which is characterized in that the 2nd ESI is located in every flow identification information subdomain in described piece of confirmation message domain, alternatively, in the homing sequence control subdomain being located in described piece of confirmation message domain.
61. Device as claimed in claim 59, which is characterized in that the 2nd ESI is located at the block confirmation control domain of the BA frame.
62. Such as the described in any item devices of claim 54-58, which is characterized in that the sending module is also For:

    After sending the A-MPDU, before the receiving module receives the BA frame, transmission block confirmation request BAR frame.
63. Device as claimed in claim 62, which is characterized in that the first interaction sequence mark ESI, the first ESI are carried in each MPDU for including in the A-MPDU for identifying current interaction sequence；

    The 3rd ESI is carried in the BAR frame, for the 3rd ESI for identifying current interaction sequence, the 3rd ESI is identical as the value of the first ESI.
64. Device as claimed in claim 62, it is characterized in that, it include corresponding with receiving end piece of confirmation request information field in the BAR frame, the 3rd ESI is located in every flow identification information subdomain in described piece of confirmation request information field or block confirmation request starting sequence number control subdomain.
65. Device as claimed in claim 62, which is characterized in that include BAR control domain in the BAR frame, the 3rd ESI is located at the BAR control domain.
66. Such as the described in any item devices of claim 62-65, which is characterized in that also carry the instruction of the second serial number type in the BAR frame, whether the second serial number type instruction is used to indicate in the BAR frame comprising the 3rd ESI.
67. Device as described in claim 66, which is characterized in that the second serial number type instruction is located in the BAR control domain of the BAR frame, alternatively, being located in corresponding with the receiving end piece of confirmation request information field in the BAR frame included.
68. A kind of data reception acknowledgement device characterized by comprising

    Receiving module, for receiving the aggregated media access control protocol data cell A-MPDU of transmitting terminal transmission, the each media access control protocol data unit MPDU for including in the A-MPDU is each configured with corresponding interim sequence number, the interim sequence number for any two MPDU for including in the A-MPDU is not identical, wherein, traffic identifier TID in the A-MPDU at least there are two MPDU is not identical, and/or, it include fragment at least one MPDU；

    Sending module confirms BA frame for transmission block, includes corresponding with the transmitting terminal piece of confirmation message domain in the BA frame, includes block acknowledgement bit table subdomain in described piece of confirmation message domain, and described piece confirms It is indicated in information field comprising First ray type, each bit that the First ray type instruction is used to indicate described piece of acknowledgement bit table subdomain respectively corresponds to the interim sequence number of a MPDU in the A-MPDU.
69. Device as recited in claim 68, which is characterized in that each media access control protocol data unit MPDU for including in the A-MPDU is each configured with corresponding interim sequence number, specifically:

    Corresponding interim sequence number is carried in each MPDU for including in the A-MPDU；Alternatively,

    Interim sequence number is carried in each MPDU in addition to first MPDU of the A-MPDU, does not carry interim sequence number, and the corresponding interim Serial No. predefined value of first MPDU in first MPDU.
70. Device as described in claim 69, which is characterized in that the interim serial number bit is in the media access control MAC head of the MPDU, perhaps in the CCMP head in the MPDU delimiter of the MPDU or positioned at the MPDU.
71. Device as described in claim 70, it is characterized in that, high efficiency HE control domain of the interim serial number bit in the MAC header of the MPDU, or the service quality QoS control domain in the MAC header of the MPDU, perhaps in the frame control domain in the MAC header of the MPDU or in the sequence control domain in the MAC header of the MPDU.
72. Such as the described in any item devices of claim 68-71, which is characterized in that also carry interim sequence number in the A-MPDU and there is instruction, the interim sequence number is used to indicate whether that there are the interim sequence numbers in the presence of instruction.
73. Device as described in claim 72, which is characterized in that the interim sequence number has instruction in the physical header of the A-MPDU；Alternatively,

    There is instruction and be located in the corresponding MPDU delimiter of each MPDU that the A-MPDU includes in the interim sequence number；Alternatively,

    There is instruction and be located in the media access control MAC head for each MPDU that the A-MPDU includes in the interim sequence number；Alternatively,

    There is the CCMP that instruction is located at each MPDU that the A-MPDU includes in the interim sequence number In head.
74. Device as described in claim 73, it is characterized in that, there is high efficiency HE control domain of the instruction in the MAC header of the MPDU in the interim sequence number, perhaps the service quality QoS control domain in the MAC header of the MPDU or in the frame control domain in the MAC header of MPDU.
75. Such as the described in any item devices of claim 68-74, which is characterized in that carry the first interaction sequence mark ESI, the first ESI in each MPDU for including in the A-MPDU for identifying current interaction sequence.
76. Device as described in claim 75, it is characterized in that, first ESI is located at the frame control domain of each MPDU in the A-MPDU, or in the A-MPDU each MPDU service quality QoS control domain, or in the A-MPDU each MPDU high efficiency HE control domain, perhaps it is located in the corresponding MPDU delimiter of each MPDU in the A-MPDU or in physical layer PHY of the A-MPDU.
77. Such as the described in any item devices of claim 68-74, it is characterized in that, it further include homing sequence control subdomain in described piece of confirmation message domain, it include originating interim sequence number in the homing sequence control subdomain, the interim sequence number of starting is used to indicate the interim sequence number of the corresponding MPDU of the first bit in described piece of acknowledgement bit table subdomain.
78. Device as described in claim 77, which is characterized in that the First ray type instruction is located in the fragment work song domain in homing sequence control subdomain, or, in every flow identification information subdomain in described piece of confirmation message domain, alternatively, being located in the block confirmation control domain of the BA frame.
79. Method as described in claim 78, it is characterized in that, it include traffic identifier in every flow identification information subdomain, the First ray type instruction is located in every flow identification information subdomain in described piece of confirmation message domain, it include: that the First ray type is designated as the traffic identifier, when the traffic identifier is predefined value, indicate that in the homing sequence control subdomain in described piece of confirmation message domain include originating interim sequence number.
80. Device as described in claim 77 or 79, which is characterized in that it is current for identifying that the first interaction sequence mark ESI, the first ESI is carried in each MPDU for including in the A-MPDU Interaction sequence；

    The second interaction sequence mark ESI, the 2nd ESI are carried in the BA frame for identifying current interaction sequence, the 2nd ESI is identical as the value of the first ESI.
81. Device as described in claim 80, which is characterized in that the 2nd ESI is located in every flow identification information subdomain in described piece of confirmation message domain, alternatively, in the homing sequence control subdomain being located in described piece of confirmation message domain.
82. Device as described in claim 80, which is characterized in that the 2nd ESI is located at the block confirmation control domain of the BA frame.
83. Device as described in claim 80, which is characterized in that the receiving module is also used to:

    After receiving the A-MPDU, before the sending module sends the BA frame, the block confirmation request BAR frame that the transmitting terminal is sent is received.
84. Device as described in claim 83, which is characterized in that the first interaction sequence mark ESI, the first ESI are carried in each MPDU for including in the A-MPDU for identifying current interaction sequence；

    The second interaction sequence mark ESI, the 2nd ESI are carried in the BA frame for identifying current interaction sequence；

    The 3rd ESI is carried in the BAR frame, for the 3rd ESI for identifying current interaction sequence, the 3rd ESI is identical as the value of the first ESI and the 2nd ESI.
85. Device as described in claim 84, it is characterized in that, it include corresponding with receiving end piece of confirmation request information field in the BAR frame, the 3rd ESI is located in every flow identification information subdomain in described piece of confirmation request information field or block confirmation request starting sequence number control subdomain.
86. Device as described in claim 84, which is characterized in that include BAR control domain in the BAR frame, the 3rd ESI is located at the BAR control domain.
87. Such as the described in any item devices of claim 84-86, which is characterized in that also carry the instruction of the second serial number type in the BAR frame, whether the second serial number type instruction is used to indicate in the BAR frame comprising the 3rd ESI.
88. Device as described in claim 87, which is characterized in that the second serial number type instruction In the BAR control domain of the BAR frame, alternatively, being located in corresponding with the receiving end piece of confirmation request information field in the BAR frame included.