WO2017054448A1 - Procédé d'émission de données, et procédé et dispositif pour confirmer la réception de données - Google Patents

Procédé d'émission de données, et procédé et dispositif pour confirmer la réception de données Download PDF

Info

Publication number
WO2017054448A1
WO2017054448A1 PCT/CN2016/080881 CN2016080881W WO2017054448A1 WO 2017054448 A1 WO2017054448 A1 WO 2017054448A1 CN 2016080881 W CN2016080881 W CN 2016080881W WO 2017054448 A1 WO2017054448 A1 WO 2017054448A1
Authority
WO
WIPO (PCT)
Prior art keywords
mpdu
sequence number
esi
temporary
frame
Prior art date
Application number
PCT/CN2016/080881
Other languages
English (en)
Chinese (zh)
Inventor
杜振国
丁志明
禄彼得
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201680052200.9A priority Critical patent/CN108028836B/zh
Publication of WO2017054448A1 publication Critical patent/WO2017054448A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a data transmission method, a data reception confirmation method, and an apparatus.
  • the receiving end In Wireless Wireless Local Area Network (WLAN) based on Wireless Fidelity (WiFi), the receiving end usually uses Block Acknowledge (BA) frame pair to transmit one or more aggregated MPDUs from the transmitting end (Aggregate MPDU).
  • A-MPDU A-MPDU
  • MPDU MAC Protocol Data Unit
  • MAC Medium Access Control
  • Media Access Control MAC Protocol Data Unit
  • A-MPDU is a MAC layer aggregation transmission mechanism proposed in 802.11n, and is widely used in 802.11ac. Prior to this, there was only one MPDU in each frame. In the A-MPDU, multiple MPDUs may be included, and each MPDU may belong to different frame types, or may have different source addresses (Source addresses, SAs) or destination addresses (Destination Addresses, DAs), but all MPDUs have the same The receiving address, that is, all MPDUs in one A-MPDU are sent to the same receiving device, but it is not excluded that multiple MPDUs of the same A-MPDU are sent to different receiving devices.
  • the A-MPDU reduces the interframe space, channel contention time, and physical head repetition transmission, thereby effectively improving transmission efficiency.
  • the receiving end When the receiving end receives an A-MPDU that is sent to itself for immediate confirmation, that is, when the Ack policy in the MPDU is set to an implicit block confirmation request (implicit BAR), a reply to the sender is returned.
  • Block Ack, BA the BA frame contains a block acknowledgment bit table (BA Bitmap), and each bit of its BA Bitmap corresponds to one MPDU in the A-MPDU. Due to one The A-MPDU allows a maximum of 64 MPDUs to be aggregated, so the length of the BA Bitmap is fixed at 64 bits.
  • the specific design of the BA frame has a variety of variants.
  • the sender may also need to send a Block Acknowledge Request (BAR) frame, that is, the sender requests the receiver to acknowledge certain MPDUs.
  • BAR Block Acknowledge Request
  • the Ack policy in the MPDU is set to BA.
  • the receiving end replies to the BA frame when receiving the BAR frame of the transmitting end, instead of immediately replying to the BA frame when receiving the A-MPDU, that is, the transmitting end needs to send
  • the BAR frame triggers the receiver to reply to the BA frame.
  • the receiving end receives multiple A-MPDUs sent by the sending end, and different A-MPDUs may have different TIDs, and then the receiving end sends a BA frame for confirmation, and the frame includes multiple 64-bit BA Bitmap, each BA Bitmap corresponds to a TID, this BA frame is called multi-TID BA.
  • the Access Point In the next-generation standard 802.11ax of 802.11ac, due to the introduction of the uplink (UL) Multiple User (MU) transmission mechanism, including UL OFDMA and UL MU-MIMO, the Access Point (AP) will At the same time, transmission frames of multiple stations (Stations, STAs) are received, and each STA's transmission frame contains an A-MPDU. According to the resolution adopted by the current standard conference, the AP needs to send a multi-STA BA frame (M-BA for short) to reply the confirmation information to multiple STAs. Specifically, the multi-STA BA frame adopts a structure similar to the multi-TID BA in the existing standard.
  • M-BA multi-STA BA frame
  • FIG. 3 is a schematic diagram of a structure of a multi-STA BA frame.
  • the multi-STA BA frame includes a plurality of block acknowledgment information (BA Information, abbreviated as BA Info), and each BA information corresponds to one STA, and the STA's identification AID includes In the first 11 bits (B0 to B10) of the first field Per TID Info (called: per TID information) of each BA Info.
  • an ACK/BA indication is also introduced.
  • the ACK/BA indication is set to BA, there is a Block Ack Starting Sequence Control field and a BA Bitmap field after the Per TID Info field; when ACK/BA The indication is set to ACK. There is no Block Ack Starting Sequence Control and BA Bitmap field after the Per TID Info field.
  • 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 receiving end correctly solves the MPDU, or the A-MPDU packet received by the device Multiple MPDUs are included and the receiving end correctly resolves all MPDUs in the A-MPDU. In the case of correctly receiving all MPDUs, it is not necessary to separately indicate whether each MPDU is correctly received, so the Block Ack Starting Sequence Control and the BA Bitmap field can be omitted, thereby saving transmission overhead.
  • the multi-STA BA frame also includes a Frame Check Sequence (FCS) field, a Duration/ID field, a Receiving Address (RA) field, and a Transmitting Address (TA). area.
  • FCS Frame Check Sequence
  • RA Receiving Address
  • TA Transmitting Address
  • the number in the middle indicates the sequence number (SN) of the MPDU included in the subframe
  • the VO subframe indicates a video (Video) subframe
  • the VI subframe indicates a voice (Voice) subframe, wherein one subframe includes an MPDU.
  • the delimiter, MPDU, and padding byte (PAD) the length of the padding byte is usually 0 to 3 bytes, and the purpose of padding the byte is to make the length of the sub-frame an integer multiple of 4 bytes.
  • the A-MPDU is allowed to contain multiple TID data, as shown in FIG. 4b, the MPDUs of different TIDs can be aggregated and transmitted in the same A-MPDU, so that only a small amount of redundant bit filling is needed, thereby improving efficiency.
  • the BE subframe in Figure 4b represents a Best Effort subframe
  • the BK subframe represents a Background subframe.
  • the TID of the MPDU included in the subframe of the VO subframe is VO
  • the TID of the MPDU included in the subframe of the VI subframe is VI
  • the TID of the MPDU included in the subframe of the BE subframe is BE
  • the BK subframe That is, the TID of the MPDU included in the subframe is BK.
  • the receiving end receives an A-MPDU containing multiple TID data, how to confirm it is a problem to be solved.
  • the STA receives its own A-MPDU, which contains multiple 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.
  • each A-MPDUs may contain 64 MPDUs. Therefore, it is worthwhile for each A-MPDU to correspond to one BA Info (length 12 bytes).
  • the A-MPDU includes multiple MIDs of the TID, the sum of the MPDUs of the different TIDs does not exceed 64, that is, the number of MPDUs per TID is much less than 64. Therefore, each TID corresponds to a BA Info is a great waste.
  • the AP receives multiple A-MPDUs that are sent by multiple STAs in the UL MU mode. At least one A-MPDU includes multiple MIDs of the TID, and then the AP replies to the acknowledgement frame by M-BA or by OFDMA BA.
  • the so-called OFDMA BA that is, the AP replies to the acknowledgment message separately to each STA in the DL OFDMA mode.
  • an obvious reply mode is to use the multi-TID BA frame for confirmation, and the AP will face The same waste problem in DL MU.
  • the M-BA means that the AP replies the acknowledgment messages of multiple STAs in one BA frame for reply.
  • a simple combination method can obtain the acknowledgment mode of expanding the Multi-TID BA frame format.
  • Each of the BA Infos corresponds to an ⁇ AID, TID>, and an AID (Association Identifier), that is, an association identifier of the STA, which is used to identify the STA, and the TID is a flow identifier.
  • the M-BA frame structure is schematic. .
  • This method has the same waste problem as the multi-TID confirmation of the DL MU, because the sum of the MPDUs of all the TIDs corresponding to the same AID does not exceed 64.
  • AID1 corresponds to TID 2 and TID 3
  • AID2 corresponds to TID1 and TID3.
  • TID2 is associated with TID4 and AID3, and one BA Info for each TID is a great waste.
  • an MPDU in an A-MPDU contains fragments and some do not, it is difficult for the receiving end to confirm these MPDUs and fragments simultaneously with a BA Bitmap, because in this case, the BA Bitmap is required.
  • Some bits correspond to MPDUs, and some bits correspond to fragments, which is difficult to implement in current standards.
  • An obvious solution is to separately acknowledge the receiving end with different BA Info in the BA frame.
  • A-MPDU contains both MPDUs of different TIDs, and some MPDUs also contain fragments, in this case Confirmation will face two difficulties at the same time, namely more The problem of acknowledgment overhead was caused by the MPDUs of the TIDs, and the difficulty of confirming the MPDUs and the shards of the shards, which need to be further solved.
  • the embodiment of the present invention provides a data sending method, a data receiving and confirming method, and a device, where the receiving end performs confirmation when the MPDU including the plurality of TIDs in the A-MPDU and/or the part of the MPDUs included in the A-MPDU are fragmented.
  • a data sending method including:
  • the sending end respectively configures a temporary sequence number of each medium access control protocol data unit MPDU included in the aggregated medium access control protocol data unit A-MPDU, and the temporary serial number of any two MPDUs included in the A-MPDU is not The same, wherein the flow identifiers TID of at least two MPDUs in the A-MPDU are different, and/or at least one MPDU includes a fragment;
  • the sending end sends the A-MPDU after configuring the temporary sequence number.
  • the sending end separately configures a temporary sequence number of each medium access control protocol data unit MPDU included in the aggregated medium access control protocol data unit A-MPDU, include:
  • the transmitting end carries a corresponding temporary serial number in each MPDU included in the A-MPDU;
  • the transmitting end carries a corresponding temporary sequence number in each MPDU except the first MPDU of the A-MPDU, where the first MPDU does not carry a temporary sequence number, and the first MPDU
  • the corresponding temporary serial number is a predefined value.
  • the temporary sequence number is located in a media access control MAC header of the MPDU, or is located at an MPDU delimitation of the MPDU. In the symbol, or in the CCMP header of the MPDU.
  • the temporary sequence number is located in a high efficiency HE control field in the MAC header of the MPDU, or a bit The quality of service QoS control field in the MAC header of the MPDU, or 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.
  • the A-MPDU further carries a temporary sequence number existence indication, where the temporary serial number existence indication is used Indicates whether the temporary serial number exists.
  • the temporary sequence number presence indication is located in a physical header of the A-MPDU;
  • the temporary sequence number presence indication is located in an MPDU delimiter corresponding to each MPDU included in the A-MPDU; or
  • the temporary sequence number presence indication is located in a media access control MAC header of each MPDU included in the A-MPDU;
  • the temporary sequence number presence indication is located in a CCMP header of each MPDU included in the A-MPDU.
  • the temporary sequence number presence indicates a high efficiency HE control domain located in a MAC header of the MPDU, or is located in the MPDU The quality of service QoS control field in the MAC header, or in the frame control domain in the MAC header of the MPDU.
  • each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where the first ESI is used Identifies the current interaction sequence.
  • the first ESI is located in a frame control domain of each MPDU in the A-MPDU, or is located in the A-MPDU.
  • the sending end after the sending end sends the A-MPDU after configuring the temporary sequence number, the The method also includes:
  • the transmitting end receives a block acknowledgement BA frame, where the BA frame includes a block acknowledgement information field corresponding to the sender, the block acknowledgement information field includes a block acknowledgement bit table subfield, and the block acknowledgement information domain Included in 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 one MPDU in the A-MPDU;
  • the transmitting end determines, according to the value of each bit in the sub-field of the block acknowledgment bit table, whether the MPDU corresponding to the temporary sequence number corresponding to each bit is correctly received.
  • the sending end determines, according to a value of each bit in the block acknowledgment bit table subfield, that each bit corresponds to Whether the MPDU corresponding to the temporary serial number is correctly received, including:
  • the block acknowledgment information field further includes a start sequence control subfield, where the start sequence control subfield includes And a start temporary sequence number, where the start temporary sequence number is used to indicate a temporary sequence number of the MPDU corresponding to the first bit in the block acknowledgement bit table subfield.
  • the first sequence number type indication is located in a fragment number subfield in the start sequence control subfield Or, located in the per-identity identification information sub-domain of the block acknowledgment information field.
  • the per-flow identification information sub-domain includes a flow identifier, where the first serial number type indicates the flow
  • the identifier when the flow identifier is a predefined value, indicates that the start sequence control subfield in the block acknowledgement information field includes a start temporary sequence number.
  • each MPDU included in the A-MPDU carries the first intersection a mutual sequence identifier ESI, the first ESI is used to identify a 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 is the same as the value of the first ESI.
  • the second ESI is located in a per-flow identification information sub-domain in the block acknowledgement information field, or is located The block confirms the start sequence control subfield in the information field.
  • the second ESI is located in a block acknowledgement control field of the BA frame.
  • the sending end after the sending end sends the A-MPDU, the sending end receives the BA Before the frame, the method further includes:
  • the transmitting end sends a block acknowledge request BAR frame.
  • each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where the first ESI Used to identify the current interaction sequence;
  • the third ESI is carried in the BAR frame, and the third ESI is used to identify a current interaction sequence, and the third ESI is the same as the value of the first ESI.
  • the BAR frame includes a block acknowledgement request information field corresponding to the receiving end, where the third ESI is located Each stream identification information subfield or block acknowledgment request start sequence number control subfield in the block acknowledgment information field.
  • the BAR frame includes a BAR control region, and the third ESI is located in the BAR control region.
  • the second frame number type indication is further carried in the BAR frame,
  • the second sequence number type indication is used to indicate whether the third ESI is included in the BAR frame.
  • the second sequence number type indication is located in a BAR control domain of the BAR frame, or is located in a block acknowledgement request information field corresponding to the receiving end included in the BAR frame.
  • a data receiving confirmation method including:
  • the receiving end receives the aggregated medium access control protocol data unit A-MPDU sent by the sending end, and each medium access control protocol data unit MPDU included in the A-MPDU is respectively configured with a corresponding temporary serial number, where the A- The temporary sequence numbers of any two MPDUs included in the MPDU are different.
  • the flow identifiers TID of at least two MPDUs in the A-MPDU are different, and/or at least one MPDU includes a fragment.
  • the receiving end sends a block acknowledgement BA frame, where the BA frame includes a block acknowledgement information field corresponding to the sending end, the block acknowledgement information field includes a block acknowledgement bit table subfield, and the block acknowledgement information domain
  • the first sequence number type indication is included, and the first sequence number type indication is used to indicate that each bit of the block acknowledgement bit table subfield corresponds to a temporary sequence number of one MPDU in the A-MPDU.
  • 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 serial number
  • 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 pre- Define the value.
  • the temporary sequence number is located in a media access control MAC header of the MPDU, or is located at an MPDU delimitation of the MPDU. In the symbol, or in the CCMP header of the MPDU.
  • the temporary sequence number is located in a high-efficiency HE control domain in the MAC header of the MPDU, or is located in the MAC of the MPDU.
  • the quality of service QoS control field in the header either 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.
  • the A-MPDU further carries a temporary sequence number presence indication, where the temporary sequence number presence indication is used to indicate whether the temporary sequence number exists.
  • the temporary sequence number presence indication is located in a physical header of the A-MPDU;
  • the temporary sequence number presence indication is located in an MPDU delimiter corresponding to each MPDU included in the A-MPDU; or
  • the temporary sequence number presence indication is located in a media access control MAC header of each MPDU included in the A-MPDU;
  • the temporary sequence number presence indication is located in a CCMP header of each MPDU included in the A-MPDU.
  • the temporary sequence number presence indicates a high efficiency HE control domain located in a MAC header of the MPDU, or is located in the MPDU The quality of service QoS control field in the MAC header, or in the frame control domain in the MAC header of the MPDU.
  • each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where The first ESI is used to identify the current interaction sequence.
  • the first ESI is located in a frame control domain of each MPDU in the A-MPDU, or is located in the A-MPDU.
  • the block acknowledgment information field further includes a start sequence control subfield, where the start sequence control The subfield includes a starting temporary sequence number, and the starting temporary sequence number is used to indicate a temporary sequence number of the MPDU corresponding to the first bit in the block acknowledgement bit table subfield.
  • the first sequence number type indication is located in a fragment number subfield of the start sequence control subfield, or is located in each stream identification information subfield in the block acknowledgement information field.
  • the per-flow identification information sub-domain includes a flow identifier, where the first serial number type indication is the flow identifier And when the flow identifier is a predefined value, indicating that the start sequence control subfield in the block acknowledgement information field includes a start temporary sequence number.
  • each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where The first ESI is used to identify the current interaction sequence;
  • the second ESI is used to identify the current interaction sequence, and the second ESI is the same as the value of the first ESI.
  • the second ESI is located in a per-flow identification information sub-domain in the block acknowledgement information field, or is located The block confirms the start sequence control subfield in the information field.
  • the second ESI is located in a block acknowledgement control field of the BA frame.
  • the method further includes:
  • the receiving end receives a block acknowledgement request BAR frame sent by the sending end.
  • each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where the first ESI 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;
  • the third ESI is carried in the BAR frame, and 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.
  • the BAR frame includes a block acknowledgment request information field corresponding to the receiving end, where the third ESI is located in the block acknowledgment request information field, each stream identification information subfield or the block acknowledgment request start sequence number controller In the domain.
  • the BAR frame includes a BAR control region, and the third ESI is located in the BAR control region.
  • the second frame type The second sequence number type indication is used to indicate whether the third ESI is included in the BAR frame.
  • the second serial number type indication is located in a BAR control domain of the BAR frame, or And located in a block acknowledgement request information field corresponding to the receiving end included in the BAR frame.
  • a data transmitting apparatus including:
  • a configuration module configured to separately configure a temporary sequence number of each medium access control protocol data unit MPDU included in the aggregated medium access control protocol data unit A-MPDU, and temporarily install any two MPDUs included in the A-MPDU
  • the sequence identifiers are different, wherein the stream identifiers TID of at least two MPDUs in the A-MPDU are different, and/or at least one MPDU includes a fragment;
  • a sending module configured to send the A-MPDU after the configuration module configures the temporary serial number.
  • the configuration module is specifically configured to:
  • Each MPDU included in the A-MPDU carries a corresponding temporary serial number
  • Each MPDU except the first MPDU of the A-MPDU carries a corresponding temporary sequence number, where the first MPDU does not carry a temporary sequence number, and the temporary sequence corresponding to the first MPDU
  • the number is a predefined value.
  • the temporary sequence number is located in a media access control MAC header of the MPDU, or is located at an MPDU delimitation of the MPDU. In the symbol, or in the CCMP header of the MPDU.
  • the temporary sequence number is located in a high efficiency HE control field in the MAC header of the MPDU, or a bit The quality of service QoS control field in the MAC header of the MPDU, or 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.
  • the A-MPDU further carries a temporary sequence number existence indication, where the temporary serial number existence indication is used Indicates whether the temporary serial number exists.
  • the temporary sequence number presence indication is located in a physical header of the A-MPDU;
  • the temporary sequence number presence indication is located in an MPDU delimiter corresponding to each MPDU included in the A-MPDU; or
  • the temporary sequence number presence indication is located in a media access control MAC header of each MPDU included in the A-MPDU;
  • the temporary sequence number presence indication is located in a CCMP header of each MPDU included in the A-MPDU.
  • the temporary sequence number existence indicates a high efficiency HE control domain located in a MAC header of the MPDU, or is located in the MPDU The quality of service QoS control field in the MAC header, or in the frame control domain in the MAC header of the MPDU.
  • each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where the first ESI is used Identifies the current interaction sequence.
  • the first ESI is located in a frame control domain of each MPDU in the A-MPDU, or is located in the A-MPDU.
  • the receiving module is further configured to:
  • the BA frame includes a block acknowledgement information field corresponding to the transmitting end
  • the block acknowledgement information field includes a block acknowledgement bit table subfield
  • the block acknowledgement information field includes a first a sequence number type indication, where the first sequence number type indication is used to indicate that each bit of the block acknowledgement bit table subfield corresponds to a temporary sequence number of one MPDU in the A-MPDU;
  • processing module for:
  • the processing module is specifically configured to:
  • the block acknowledgment information field further includes a start sequence control subfield, where the start sequence control subfield includes And a start temporary sequence number, where the start temporary sequence number is used to indicate a temporary sequence number of the MPDU corresponding to the first bit in the block acknowledgement bit table subfield.
  • the first sequence number type indication is located in a fragment number subfield in the start sequence control subfield Or, located in the per-identity identification information sub-domain of the block acknowledgment information field.
  • the per-flow identification information sub-domain includes a flow identifier, where the first serial number type is indicated as the flow
  • the identifier when the flow identifier is a predefined value, indicates that the start sequence control subfield in the block acknowledgement information field includes a start temporary sequence number.
  • the first interaction is carried in each MPDU included in the A-MPDU a sequence identifier ESI, the first ESI is used to identify a current interaction sequence;
  • the BA frame carries a second interaction sequence identifier ESI, where the second ESI is used to identify the current An interaction sequence, the second ESI being the same as the value of the first ESI.
  • the second ESI is located in a per-flow identification information sub-domain in the block acknowledgement information field, or Located in the start sequence control subfield of the block acknowledgment information field.
  • the second ESI is located in a block acknowledgement control field of the BA frame.
  • the sending module is further configured to:
  • the receiving module After transmitting the A-MPDU, before receiving the BA frame, the receiving module sends a block acknowledge request BAR frame.
  • each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where the first ESI Used to identify the current interaction sequence;
  • the third ESI is carried in the BAR frame, and the third ESI is used to identify a current interaction sequence, and the third ESI is the same as the value of the first ESI.
  • the BAR frame includes a block acknowledgement request information field corresponding to the receiving end, where the third ESI is located Each stream identification information subfield or block acknowledgment request start sequence number control subfield in the block acknowledgment information field.
  • the BAR frame includes a BAR control domain, and the third ESI is located in the BAR control domain.
  • the second frame number type indication is further carried in the BAR frame,
  • the second sequence number type indication is used to indicate whether the third ESI is included in the BAR frame.
  • the second serial number type indication is located in a BAR control domain of the BAR frame, or The block confirmation request information field corresponding to the receiving end included in the BAR frame.
  • the fourth aspect provides a data receiving confirmation device, including:
  • a receiving module configured to receive an aggregated medium access control protocol data unit A-MPDU sent by the sending end, where each medium access control protocol data unit MPDU included in the A-MPDU is respectively configured with a corresponding temporary serial number, The temporary sequence numbers of any two MPDUs included in the A-MPDU are different, wherein the stream identifiers TID of at least two MPDUs in the A-MPDU are different, and/or at least one MPDU includes fragments. ;
  • a sending module configured to send a block acknowledgement BA frame, where the BA frame includes a block acknowledgement information field corresponding to the sending end, where the block acknowledgement information field includes a block acknowledgement bit table subfield, and the block acknowledgement information
  • the domain includes a first sequence number type indication, and the first sequence number type indication is used to indicate that each bit of the block acknowledgement bit table subfield corresponds to a temporary sequence number of one MPDU in the A-MPDU.
  • 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 serial number
  • 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 pre- Define the value.
  • the temporary sequence number is located in a media access control MAC header of the MPDU, or is located at an MPDU delimitation of the MPDU. In the symbol, or in the CCMP header of the MPDU.
  • the temporary sequence number is located in a high-efficiency HE control domain in the MAC header of the MPDU, or is located in the MAC of the MPDU.
  • the quality of service QoS control field in the header either 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.
  • the A-MPDU further carries a temporary sequence number existence indication, where the temporary serial number existence indication is used Indicates whether the temporary serial number exists.
  • the temporary sequence number presence indication is located in a physical header of the A-MPDU;
  • the temporary sequence number presence indication is located in an MPDU delimiter corresponding to each MPDU included in the A-MPDU; or
  • the temporary sequence number presence indication is located in a media access control MAC header of each MPDU included in the A-MPDU;
  • the temporary sequence number presence indication is located in a CCMP header of each MPDU included in the A-MPDU.
  • the temporary sequence number existence indicates a high efficiency HE control domain located in a MAC header of the MPDU, or is located in the MPDU The quality of service QoS control field in the MAC header, or in the frame control domain in the MAC header of the MPDU.
  • each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where The first ESI is used to identify the current interaction sequence.
  • the first ESI is located in a frame control domain of each MPDU in the A-MPDU, or is located in the A-MPDU.
  • the block acknowledgment information field further includes a start sequence control subfield, where the start sequence control The subfield includes a starting temporary sequence number, and the starting temporary sequence number is used to indicate a temporary sequence number of the MPDU corresponding to the first bit in the block acknowledgement bit table subfield.
  • the first serial number type indication is located in a fragment number subfield in the start sequence control subfield, or Located in the per-stream identification information sub-domain of the block acknowledgment information field.
  • the per-identity identifier information sub-domain includes a flow identifier, where the first serial number type indication is the flow identifier And when the flow identifier is a predefined value, indicating that the start sequence control subfield in the block acknowledgement information field includes a start temporary sequence number.
  • each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where The first ESI is used to identify a current interaction sequence;
  • the second ESI is used to identify the current interaction sequence, and the second ESI is the same as the value of the first ESI.
  • the second ESI is located in a per-flow identification information sub-domain in the block acknowledgement information field, or is located The block confirms the start sequence control subfield in the information field.
  • the second ESI is located in a block acknowledgement control field of the BA frame.
  • the receiving module is further configured to:
  • each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where the first ESI 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;
  • the third ESI is carried in the BAR frame, and 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.
  • the BAR frame includes a block acknowledgement request information field corresponding to the receiving end, where the third ESI is located in the Each stream identification information subfield or block confirmation request start sequence number in the block acknowledgment request information field Control the subdomain.
  • the BAR frame includes a BAR control domain, and the third ESI is located in the BAR control domain.
  • the second frame type The second sequence number type indication is used to indicate whether the third ESI is included in the BAR frame.
  • the second serial number type indication is located in a BAR control domain of the BAR frame, or And located in a block acknowledgement request information field corresponding to the receiving end included in the BAR frame.
  • a device comprising a processor, a memory and a transceiver, wherein the transceiver receives and transmits data under the control of the processor, the memory stores a preset program, and the processor reads The program saved in the memory, according to the program performs the following process:
  • the stream identifier TID of at least two MPDUs in the A-MPDU is different, and/or at least one MPDU includes a fragment;
  • the processor is specifically configured to:
  • Each MPDU included in the A-MPDU carries a corresponding temporary serial number
  • Each MPDU except the first MPDU of the A-MPDU carries a corresponding temporary sequence number, where the first MPDU does not carry a temporary sequence number, and the temporary sequence corresponding to the first MPDU
  • the number is a predefined value.
  • the temporary sequence number is located in a media access control MAC header of the MPDU, or is located in an MPDU delimitation of the MPDU. In the symbol, or in the CCMP header of the MPDU.
  • the temporary sequence number is located in a high efficiency HE control field in the MAC header of the MPDU, or a bit The quality of service QoS control field in the MAC header of the MPDU, or 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.
  • the A-MPDU further carries a temporary sequence number existence indication, where the temporary serial number existence indication is used Indicates whether the temporary serial number exists.
  • the temporary sequence number presence indication is located in a physical header of the A-MPDU;
  • the temporary sequence number presence indication is located in an MPDU delimiter corresponding to each MPDU included in the A-MPDU; or
  • the temporary sequence number presence indication is located in a media access control MAC header of each MPDU included in the A-MPDU;
  • the temporary sequence number presence indication is located in a CCMP header of each MPDU included in the A-MPDU.
  • the temporary sequence number existence indicates a high efficiency HE control domain located in a MAC header of the MPDU, or is located in the MPDU The quality of service QoS control field in the MAC header, or in the frame control domain in the MAC header of the MPDU.
  • each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where the first ESI is used Identifies the current interaction sequence.
  • the first ESI is located in a frame control domain of each MPDU in the A-MPDU, or is located in the A-MPDU a quality of service QoS control field for each MPDU, or a high efficiency HE control field for each of the MPDUs in the A-MPDU, or an MPDU delimiter corresponding to each of the MPDUs in the A-MPDU Medium, or located in the physical layer PHY header of the A-MPDU.
  • the processor is configured to:
  • a block acknowledgement BA frame where the BA frame includes a block acknowledgement information field corresponding to the sender, the block acknowledgement information field includes a block acknowledgement bit table subfield, and the block acknowledgement information field And including a first serial number type indication, where the first serial number type indication is used to indicate that each bit of the block acknowledgement bit table subfield corresponds to a temporary sequence number of one MPDU in the A-MPDU;
  • the processor is specifically configured to:
  • the block acknowledgment information field further includes a start sequence control subfield, where the start sequence control subfield includes And a start temporary sequence number, where the start temporary sequence number is used to indicate a temporary sequence number of the MPDU corresponding to the first bit in the block acknowledgement bit table subfield.
  • the first sequence number type indication is located in a fragment number subfield in the start sequence control subfield Or, located in the per-identity identification information sub-domain of the block acknowledgment information field.
  • the per-flow identification information sub-domain includes a flow identifier, where the first serial number type is indicated as the flow
  • the identifier when the flow identifier is a predefined value, indicates that the start sequence control subfield in the block acknowledgement information field includes a start temporary sequence number.
  • the first interaction is carried in each MPDU included in the A-MPDU a sequence identifier ESI, the first ESI is used to identify a current interaction sequence;
  • the BA frame carries a second interaction sequence identifier ESI, where the second ESI is used to identify the current An interaction sequence, the second ESI being the same as the value of the first ESI.
  • the second ESI is located in a per-flow identification information sub-domain in the block acknowledgement information field, or The block confirms the start sequence control subfield in the information field.
  • the second ESI is located in a block acknowledgement control field of the BA frame.
  • the processor is further configured to:
  • the instructing transceiver sends a block acknowledge request BAR frame before receiving the BA frame after transmitting the A-MPDU.
  • each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where the first ESI Used to identify the current interaction sequence;
  • the third ESI is carried in the BAR frame, and the third ESI is used to identify a current interaction sequence, and the third ESI is the same as the value of the first ESI.
  • the BAR frame includes a block acknowledgement request information field corresponding to the receiving end, where the third ESI is located Each stream identification information subfield or block acknowledgment request start sequence number control subfield in the block acknowledgment information field.
  • the BAR frame includes a BAR control domain, and the third ESI is located in the BAR control domain.
  • the second frame type type indication is further carried in the BAR frame,
  • the second sequence number type indication is used to indicate whether the third ESI is included in the BAR frame.
  • the second serial number type indication is located in a BAR control domain of the BAR frame, or The block confirmation request information field corresponding to the receiving end included in the BAR frame.
  • a sixth aspect provides an apparatus, the device comprising a processor, a memory, and a transceiver, wherein the transceiver receives and transmits data under the control of the processor, the memory stores a preset program, and the processor reads the memory.
  • the saved program according to the program performs the following process:
  • each medium access control protocol data unit MPDU included in the A-MPDU is respectively configured with a corresponding temporary serial number, where the A - The temporary sequence numbers of any two MPDUs included in the MPDU are different, wherein the stream identifiers TID of at least two MPDUs in the A-MPDU are different, and/or at least one MPDU includes a fragment;
  • the transceiver Transmitting, by the transceiver, a block acknowledgment BA frame, where the BA frame includes a block acknowledgment information field corresponding to the transmitting end, the block acknowledgment information field includes a block acknowledgment bit table subfield, and the block acknowledgment information field And including a first serial number type indication, where the first serial number type indication is used to indicate that each bit of the block acknowledgement bit table subfield corresponds to a temporary sequence number of one MPDU in the A-MPDU.
  • 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 serial number
  • 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 pre- Define the value.
  • the temporary sequence number is located in a media access control MAC header of the MPDU, or is located at an MPDU delimitation of the MPDU. In the symbol, or in the CCMP header of the MPDU.
  • the temporary sequence number is located in a high efficiency HE control domain in a MAC header of the MPDU, or a MAC located in the MPDU.
  • the quality of service QoS control field in the header either 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.
  • the A-MPDU further carries a temporary sequence number presence indication, where the temporary sequence number presence indication is used to indicate whether the temporary sequence number exists.
  • the temporary sequence number presence indication is located in a physical header of the A-MPDU;
  • the temporary sequence number presence indication is located in an MPDU delimiter corresponding to each MPDU included in the A-MPDU; or
  • the temporary sequence number presence indication is located in a media access control MAC header of each MPDU included in the A-MPDU;
  • the temporary sequence number presence indication is located in a CCMP header of each MPDU included in the A-MPDU.
  • the temporary sequence number existence indicates a high efficiency HE control domain located in a MAC header of the MPDU, or is located in the MPDU The quality of service QoS control field in the MAC header, or in the frame control domain in the MAC header of the MPDU.
  • each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where The first ESI is used to identify the current interaction sequence.
  • the first ESI is located in a frame control domain of each MPDU in the A-MPDU, or is located in the A-MPDU a quality of service QoS control field for each MPDU, or a high efficiency HE control field for each of the MPDUs in the A-MPDU, or an MPDU delimiter corresponding to each of the MPDUs in the A-MPDU Medium, or located in the physical layer PHY header of the A-MPDU.
  • the block acknowledgment information field further includes a start sequence control subfield, where the start sequence control The subfield includes a starting temporary sequence number, and the starting temporary sequence number is used to indicate a temporary sequence number of the MPDU corresponding to the first bit in the block acknowledgement bit table subfield.
  • the first sequence number type indication is located in a fragment number subfield of the start sequence control subfield, or is located in each stream identification information subfield in the block acknowledgement information field.
  • the per-flow identification information sub-domain includes a flow identifier, where the first serial number type indication is the flow identifier And when the flow identifier is a predefined value, indicating that the start sequence control subfield in the block acknowledgement information field includes a start temporary sequence number.
  • each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where The first ESI is used to identify the current interaction sequence;
  • the second ESI is used to identify the current interaction sequence, and the second ESI is the same as the value of the first ESI.
  • the second ESI is located in a per-flow identification information sub-domain in the block acknowledgement information field, or is located The block confirms the start sequence control subfield in the information field.
  • the second ESI is located in a block acknowledgement control field of the BA frame.
  • the processor is further configured to:
  • the transceiver After receiving the A-MPDU, the transceiver is instructed to receive a block acknowledgement request BAR frame sent by the sending end before sending the BA frame.
  • each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where the first ESI 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;
  • the third ESI is carried in the BAR frame, and 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.
  • the BAR frame includes a block acknowledgment request information field corresponding to the receiving end, where the third ESI is located in the block acknowledgment request information field, each stream identification information subfield or the block acknowledgment request start sequence number controller In the domain.
  • the BAR frame includes a BAR control domain, and the third ESI is located in the BAR control domain.
  • the second frame type The second sequence number type indication is used to indicate whether the third ESI is included in the BAR frame.
  • the second serial number type indication is located in a BAR control domain of the BAR frame, or And located in a block acknowledgement request information field corresponding to the receiving end included in the BAR frame.
  • the transmitting end separately configures the information included in the A-MPDU.
  • the temporary sequence number of each MPDU, the temporary sequence number of all MPDUs in the A-MPDU is a uniform number, to ensure that the temporary sequence numbers of any two MPDUs included in the A-MPDU are different, so that the receiving end is replying to the BA.
  • all the MPDUs in the A-MPDU can be acknowledged in the BA frame according to the temporary sequence number of each MPDU in the A-MPDU, thereby reducing the transmission overhead of the BA frame and solving the problem. I have identified difficult problems.
  • Figure 1 is a schematic diagram of an interaction sequence
  • FIG. 2 is a schematic diagram of transmission of a plurality of A-MPDUs having different TIDs
  • FIG. 3 is a schematic structural diagram of a multi-STA BA frame
  • 4a is a schematic diagram of transmission in the case where an MPDU including one TID is included in an A-MPDU;
  • 4b is a schematic diagram of transmission in the case where an MPDU including multiple TIDs is included in an A-MPDU;
  • FIG. 5 is a schematic structural diagram of a multi-TID BA frame using a combination of AID and TID as an identifier
  • FIG. 6 is a schematic flowchart of a method for transmitting data by a transmitting end according to an embodiment of the present invention
  • FIG. 7 is a schematic structural diagram of an A-MPDU in which a new domain bearer temporary sequence number is added to a MAC header of an MPDU according to an embodiment of the present invention
  • FIG. 8 is a schematic structural diagram of an HE control field of an MPDU according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a frame control domain of an MPDU according to an embodiment of the present invention.
  • 10a is a schematic diagram of mapping between a sequence number and a temporary sequence number when a sequence control field of an MPDU is used to carry a temporary sequence number according to an embodiment of the present invention
  • FIG. 10b is a diagram showing a counter change of each TID before and after A-MPDU transmission when the sequence control field of the MPDU is used to carry the temporary sequence number according to the embodiment of the present invention
  • FIG. 11 is a schematic structural diagram of an MPDU Delimiter according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of a CCMP MPDU
  • FIG. 13 is a schematic flowchart of a method for receiving data confirmation by a receiving end according to an embodiment of the present invention
  • FIG. 14 is a schematic structural diagram of a BA frame according to an embodiment of the present invention.
  • FIG. 15 is a schematic structural diagram of another BA frame according to an embodiment of the present invention.
  • FIG. 16 is a schematic structural diagram of a BAR frame according to an embodiment of the present invention.
  • FIG. 17 is a schematic structural diagram of a data transmitting apparatus according to an embodiment of the present invention.
  • FIG. 18 is a schematic structural diagram of a data receiving and confirming apparatus according to an embodiment of the present invention.
  • FIG. 19 is a schematic structural diagram of a device according to an embodiment of the present invention.
  • FIG. 20 is a schematic structural diagram of another device according to an embodiment of the present invention.
  • the standard specifies that the sequence number (Sequence Number, SN for short) of the Quality of Service (QoS) data frame maintained by the sender is for each ⁇ RA, TID>, RA (Receiving Address). Indicates the receiving address.
  • 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 includes fragments, the transmitting end configures each of the A-MPDUs respectively.
  • the temporary sequence number of the MPDUs, the temporary sequence numbers of all the MPDUs in the A-MPDU are uniformly numbered to ensure that the temporary sequence numbers of any two MPDUs in the A-MPDU are different, so that the receiving end responds to the BA frame. All MPDUs in the A-MPDU may be acknowledged in the BA frame according to the temporary sequence number of each MPDU in the A-MPDU using a block acknowledgment information field.
  • the so-called "temporary serial number of all MPDUs is a uniform number", which may be an ordered numbering of multiple MPDUs, or an unordered number, as long as the temporary serial numbers of any two MPDUs are different.
  • Ordered numbers such as: 0, 1, 2, 3..., or 63, 62, 61, 60..., or 0, 2, 4, 6, etc.; unordered numbers such as: 15, 2, 30, 59, 11, ....
  • the orderly incremental numbering of 0, 1, 2, 3... is obviously more in line with the general way of thinking. Therefore, the ordered incremental numbering is temporary.
  • a preferred scheme for serial numbering is a preferred scheme for serial numbering.
  • the detailed method for transmitting data by the transmitting end is as follows:
  • the sender configures a Temporary Sequence Number (T-SN) of each MPDU included in the A-MPDU, where the A-MPDU includes multiple MPDUs, and temporary of any two MPDUs in the A-MPDU.
  • T-SN Temporary Sequence Number
  • the sequence numbers are different, where the stream identifiers TID of at least two MPDUs in the A-MPDU are different, and/or at least one MPDU is included. Fragmentation.
  • the A-MPDU also carries a temporary sequence number presence indication, and the temporary sequence number presence indication is used to indicate whether a temporary sequence number exists.
  • the temporary sequence number presence indication is located in a physical layer (Physical Layer, PHY for short) header of the A-MPDU, and the physical layer header is generally referred to as a physical header; or the temporary sequence number presence indication indicates that each MPDU included in the A-MPDU is included.
  • the temporary sequence number presence indication is located in the MAC header of each MPDU included in the A-MPDU.
  • the PHY header is also called the PLCP (Physical Layer Convergence Procedure) header.
  • the temporary sequence number presence indication can be indicated by the bit in the SIG (Signal) field in the PLCP header.
  • PLCP can also be used.
  • the polarity of some symbols in the header is indicated, or is indicated by the remainder of the L-SIG (Legacy Signal) field in the PLCP header divided by 3 .
  • the temporary sequence number exists to indicate a High Efficiency (HE) control domain located in the MAC header of the MPDU, or a QoS control domain located in the MAC header of the MPDU, or a frame control domain located in the MAC header of the MPDU.
  • HE control domain may also be referred to as a High Throughout (HT) control domain HE variant (Variant) or a High Efficiency Wireless Local Area Network (HEW) in related standards or literature. ) Control domain.
  • HT High Throughout
  • HAW High Efficiency Wireless Local Area Network
  • the temporary serial number can be carried in various manners, including but not limited to the following specific implementation manners:
  • the temporary sequence number is located in a Medium Access Control (MAC) header of the MPDU.
  • MAC Medium Access Control
  • the sender carries a corresponding temporary sequence number in each MPDU included in the A-MPDU.
  • a new domain is added to the MAC header of the MPDU, and the new domain is used to carry the temporary sequence number.
  • a new field is added to the MAC header of the MPDU in each subframe of the A-MPDU.
  • the length of the newly added domain is 1 byte, but actually The number of bits used to carry the temporary sequence number may be less than 1 byte, such as 6 bits.
  • the presence of the temporary sequence number indicates that the existing domain bearer can be used, including but not limited to the following cases:
  • the temporary sequence number presence indication is located in the physical header, in particular, the temporary sequence number presence indication may be located in the signaling domain in the physical header.
  • the temporary sequence number indicates that the first preset value is taken, for example, when 1, the temporary sequence number exists in the MAC header of each MPDU in the A-MPDU, otherwise, the temporary sequence number does not exist in the A-MPDU.
  • the temporary sequence number presence indication may also be indicated by the polarity of a particular symbol of a certain field in the physical header, for example, when the polarity of the domain specific symbol is the first preset polarity, indicating each of the A-MPDUs A temporary sequence number exists in the MAC header of the MPDU.
  • the temporary sequence number presence indication may also be indicated by a remainder of the L-Length value in the L-SIG field in the physical header divided by 3, for example, a remainder of 1 indicates that a temporary sequence number exists 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.
  • the temporary sequence number presence indication is located in the MPDU delimiter (Delimiter) corresponding to each MPDU.
  • the MPDU Delimiter there is a reserved bit in the MPDU Delimiter, and the reserved bit can be used to carry the temporary sequence number presence indication, indicating that the MPDU Delimiter corresponds to Whether there is a temporary serial number in the MPDU.
  • the temporary sequence number exists in the MAC header of each MPDU of the A-MPDU, and may specifically be a QoS control domain or a HE control domain or a Frame Control (FC) domain in the MAC header, for example, located in a frame. From the distribution system (From DS; DS, Distribution System) domain in the control domain or to the Distribution System (To DS) domain.
  • Distribution system From the distribution system (From DS; DS, Distribution System) domain in the control domain or to the Distribution System (To DS) domain.
  • the temporary domain number is carried in the existing domain in the MAC header of the MPDU.
  • 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.
  • the HT control domain of the 802.11n standard has 8-bit reserved bits. If the HE control domain also adopts a similar structure, 6 bits can be used to carry the temporary sequence number, and one of the bits carries the temporary.
  • the serial number indicates an indication.
  • the CSI is the Channel State Information
  • the NDP is the Null Data Packet
  • the AC is the Access Category
  • the RDG is the Reverse Direction.
  • the PPDU represents the Physical Layer Convergence Procedure Protocol Data Unit
  • the TRQ represents the training request
  • the MAI represents the modulation coding scheme request or the antenna selection indication (MRQ or ASEL Indication
  • MRQ ie, MCS Request; ASEL
  • MCS Modulation and Coding Scheme
  • MFSI indicates the MCS Feedback Sequence Identifier
  • MFB indicates the modulation and coding scheme feedback (MCS Feedback)
  • the ASELC identifies the antenna selection command (ASEL Command).
  • the temporary sequence number is located in the QoS control field in the MAC header of the MPDU.
  • the sender carries the corresponding temporary sequence number in each MPDU included in the A-MPDU.
  • the Aggregate MAC Service Data Unit (A-MSDU) cannot be used in the MPDU, that is, the 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 the bit can be used to carry the temporary sequence number presence indication, and the bit is located after B7.
  • the 6 bits of B8 to B15 carry the temporary sequence number.
  • the B8 to the B15 in the QoS control domain are defined to carry the data volume or the expected transmission time of the stream corresponding to the TID (that is, the content carried by the B0 to B3 bits) to be transmitted on the device.
  • many technologies have been proposed in the 802.11 standard to implement this function, such as random access technology, etc., so B8 to B15 in the QoS control domain can be redefined as being used to carry the temporary sequence number.
  • the sender carries a corresponding temporary sequence number in each MPDU except the first MPDU of the A-MPDU, the first 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.
  • the B7 bit in the QoS control field of the first MPDU in the A-MPDU to zero, indicating that the B8 to B15 bits retain the original function, but the role is modified to B8 to B15 to carry all the data to be transmitted or the desired transmission.
  • the B7 bits of the MPDUs other than the first MPDU are set to 1, and the B8 to B15 bits carry the temporary sequence number.
  • the principle of this scheme is that the location of the first MPDU is clear and unambiguous, so the temporary sequence number is set. It is set to the default value, for example, the default value is zero, but it is not necessary to carry it explicitly in the MPDU.
  • the sender carries a corresponding temporary sequence number in each MPDU included in the A-MPDU, and the temporary sequence number is located in a frame control field in the MAC header of the MPDU.
  • the From DS and the To DS in the frame control domain are reserved bits, and one of the bits may be used to carry the temporary sequence number presence indication.
  • the temporary sequence number exists as the set value, For example, when it is 1, it indicates that the type (Subtype) subfield and the Subtype (Subtype) subfield in the frame control domain carry the temporary sequence number. Otherwise, the type (Subtype) subfield and subtype (Subtype) in the frame control domain.
  • the subdomain maintains its original functionality.
  • the Type and Subtype subdomains can be used to carry other information, such as temporary sequence numbers.
  • the sender carries a corresponding temporary sequence number in each MPDU included in the A-MPDU, and the temporary sequence number is located in a sequence control (Sequence Control) field in the MAC header of the MPDU.
  • sequence control Sequence Control
  • the sequence number subdomain in the sequence control domain is used to carry the temporary sequence number.
  • the MAC headers of the MPDUs of the management frame and the data frame all include a sequence control field, and the length is 2 bytes, wherein the 12-bit sequence number sub-domain is used to carry the sequence number of the current MPDU.
  • the bearer in the sequence number subfield will no longer be the sequence number, but the temporary sequence number.
  • the temporary sequence number may be the “unified number” described above, that is, the MPDU temporary sequence number and the sequence number are irrelevant, but may also be generated based on the sequence number of the MPDUs aggregated in the current A-MPDU.
  • a specific implementation method is to use the maximum value in the Counter of multiple TIDs to be aggregated as the starting value of the temporary sequence number in the A-MPDU.
  • the sender maintains a counter for each TID of each STA, and records the starting sequence number of the current MPDU to be sent. As shown in FIG.
  • the temporary serial number starts at 2055 and continues until 2062.
  • the MPDU sequences of different TIDs in the A-MPDU may be arbitrarily arranged, and may not be in the order of TID3, TID1, TID2 shown in FIG. 10a, or even multiple MPDUs of the same TID may be non-contiguous.
  • the counter value of all TIDs should be obtained after the above A-MPDU transmission is completed. Adjusted to the maximum temporary sequence number value in the A-MPDU plus 1, as shown in Figure 10b, the counter values of the three TIDs are adjusted to 2063.
  • the sender should be specified to be aggregated in the A-MPDU.
  • the MPDU of the same TID before the MPDU satisfies the following conditions: 1) the receiving end acknowledgement has been received, or 2) the transmitting end has abandoned the transmission due to the frame validity period and the like.
  • Another specific implementation method is to sort the MPDUs to be sent, in which the sequence number of the first MPDU is used as the starting value of the temporary sequence number in the A-MPDU, and the temporary sequence numbers of other MPDUs are sequentially incremented. .
  • the sender carries the corresponding temporary sequence number in each MPDU included in the A-MPDU, and the temporary sequence number is located in the MPDU delimiter of the MPDU.
  • one byte is added to the MPDU Delimiter of each MPDU in the A-MPDU to carry the temporary sequence number, and the temporary sequence number actually occupies less than or equal to one byte, for example, the temporary serial number occupies 6 Bits, as shown in Figure 11, the added bytes are located after the Delimiter Signature subfield.
  • the advantage of this placement is that it does not affect the original scheme of checking the delimiter signature every 4 bytes.
  • the checksum of the newly added byte (that is, the byte used to carry the temporary sequence number) is still located in the Cyclic Redundancy Code (CRC) subfield in the MPDU Delimiter, that is, the temporary sequence number and The other parts of the MPDU Delimiter are checked together and the result of the check is still placed in the CRC subfield before the delimiter signature.
  • CRC Cyclic Redundancy Code
  • the specific location of the temporary sequence number existence indication may be in the PHY header, and whether there is a new byte in all MPDU Delimiter domains of the current A-MPDU, that is, a temporary sequence
  • the serial number is displayed; or the temporary serial number exists in the reserved bit of each MPDU Delimiter of the A-MPDU, indicating whether there is a new byte, that is, a temporary sequence number, in the MPDU corresponding to the MPDU Delimiter.
  • the sender carries the corresponding temporary sequence number in each MPDU included in the A-MPDU, and the temporary sequence number is located in the CCMP (Counter mode with Cipher-block chaining message authentication code protocol).
  • the cipher block chain message authentication code protocol is in the header. This scheme is only applicable to the case where all MPDUs in the A-MPDU are transmitted by CCMP encryption.
  • Figure 12 shows the format of the CCMP MPDU. Comparing the format of the MPDUs in FIG. 7 and FIG. 9, it can be seen that if the MPDU is encrypted transmission (indicated by the "protected frame” bit of the frame control field in the MAC header) and encrypted using CCMP (indicated by ExtIV in the CCMP header), the frame is The body part includes CCMP headers, data and Message Integrity Code (MIC), and both Data and MIC are protected by encryption.
  • the CCMP header includes a 6-byte Packet Number (PN), 6 bytes are represented by PN0 to PN5, PN0 is a low byte, and PN5 is a high byte.
  • PN Packet Number
  • the PNs of different MPDUs are sequentially incremented by one, and the receiving end and the TID are not distinguished. Even if the retransmission frame is retransmitted, it is different from the PN transmitted the previous time. Therefore, the PN can uniquely identify an MPDU. Based on this, the lower bits of the PN or PN can be used as the temporary sequence number of the MPDU, for example, PN0 is used as the temporary sequence number of the MPDU.
  • the temporary sequence number presence indication may also be located in the CCMP header. For example, it is carried by any reserved bit in the CCMP header.
  • each MPDU included in the A-MPDU carries a first Exchange Sequence Identifier (ESI), and the first ESI is used to identify the current interaction sequence.
  • the first ESI is included in a frame control domain or a QoS control domain or an HE control domain or an MPDU delimiter of each MPDU included in the A-MPDU.
  • the first ESI may also be located in the PHY header of the A-MPDU.
  • the first ESI is located in the SIG field in the PHY header of the A-MPDU.
  • ESI generally occupies 2 to 3 bits.
  • Step 602 The sender sends the A-MPDU.
  • the original sequence number (SN) of each MPDU in the A-MPDU still exists, and is located in the Sequence Control field of the MAC header of each MPDU in the A-MPDU, and is saved by the sender. Correspondence between the temporary serial number and the serial number of each MPDU in the A-MPDU.
  • the detailed method for the receiving end to receive the A-MPDU and perform data receiving confirmation is as follows:
  • Step 1101 The receiving end receives the A-MPDU sent by the sending end, and each MPDU included in the A-MPDU is configured with a corresponding temporary sequence number, where the A-MPDU includes multiple MPDUs, and the A-MPDU includes any The temporary sequence numbers of the two MPDUs are different, wherein the stream identifiers TID of at least two MPDUs in the A-MPDU are different, and/or at least one MPDU includes fragments.
  • 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
  • the temporary serial number is not carried in, and the temporary serial number corresponding to the first MPDU is a predefined value.
  • the specific parameters carried in the A-MPDU and the manner in which the parameters are carried are the same as those in the sending end, and are not described here.
  • the original sequence number (SN) of each MPDU in the A-MPDU still exists. Therefore, after receiving the A-MPDU, the receiving end still sorts the sequence according to the SN of each MPDU. Therefore, there is no problem that the order of multiple MPDUs of the same TID is disordered.
  • Step 1102 The receiving end sends a BA frame, where the BA frame includes a block acknowledgement information field (also referred to as a BA Info field) corresponding to the sender end, where the block acknowledgement information field includes a block acknowledgement bit table (BA Bitmap) subfield.
  • the block acknowledgement information field includes a first sequence number type (SN Type) indication, where the first sequence number type indication is used to indicate that each bit of the block acknowledgement bit table subfield corresponds to an MPDU in the A-MPDU. serial number.
  • SN Type first sequence number type
  • FIG. 14 is a schematic structural diagram of a BA frame including a BA control domain and BA Info.
  • the domain wherein the BA Info field includes a Per-TID Info subfield, a Starting Sequence Control subfield, and a Block Acknowledge Bit Table subfield.
  • Each bit in the BA Bitmap subfield corresponds to the T-SN of one MPDU. It should be noted that FIG. 14 is only an example and does not represent all possible implementation manners, and the scope of protection of the present invention is not limited thereto.
  • the first sequence number type indication is located in a Fragment Number subfield in the start sequence control subfield, or is located in each flow identification information subfield in the block acknowledgement information field, or is located in the The block of the BA frame confirms the control domain.
  • the first sequence number type indicates that one bit is occupied.
  • the indicator block confirms the 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 serial number type indicates a value of 0, the block acknowledge bit table is indicated.
  • Each bit of the field corresponds to the sequence number of one MPDU in the A-MPDU.
  • the flow identifier (TID) therein may also be utilized to take a predefined value to indicate. For example, if the predefined value is 1111, when the TID is 1111, it indicates that the starting sequence number in the current acknowledgment information field carries the initial temporary sequence number; otherwise, the starting sequence number subfield in the current acknowledgment information field. It carries the starting serial number.
  • the first sequence number type indication may also be located in the BA control field of the BA frame, for example, with a 1-bit reserved bit in the BA control field.
  • a TID bit table may also be added in the BA control field, where 1 indicates that the subsequent block acknowledgment bit table subfield contains an acknowledgment of the MPDU of the corresponding TID.
  • the block acknowledgment bit table is 1001, indicating that the subsequent block acknowledgment bit table subfield contains acknowledgments for TID 1 and TID 4, which simplifies the processing after the data sender receives the BA frame.
  • the block acknowledgment information field includes a start sequence control subfield, where the start sequence control subfield includes a start temporary sequence number, where the start temporary sequence number is used to indicate the first bit in the block acknowledgment bit table subfield.
  • the start sequence control subfield includes a slice number subfield and a start sequence number subfield, and the slice number subfield occupies 4 bits, wherein one bit is the first sequence number type. Indicates that the remaining three bits are used to indicate the length of the block acknowledgment bit table; the starting 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 the first value, that is, each bit corresponding to the block acknowledgment bit table subfield corresponds to an A-MPDU.
  • the initial sequence number field carries the initial temporary sequence number.
  • the starting sequence number subfield carries the starting sequence number.
  • each MPDU included in the A-MPDU carries the first ESI for identifying the current interaction sequence
  • the second ESI is carried in the BA frame, 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.
  • the setting manner of the second ESI includes but is not limited to the following methods:
  • the second ESI is located in each 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 acknowledgement information field in the BA frame is a reserved field, the second ESI may be located in the TID Value subfield.
  • the TID Value sub when the first sequence number type indicates the first value, that is, the bit indicating that each bit of the block acknowledgment bit table subfield corresponds to the temporary sequence number of one MPDU in the A-MPDU, the TID Value sub The second ESI is carried in the domain; when the first sequence number type indicates the second value, that is, the bit indicating that each bit of the block acknowledgment bit table subfield corresponds to the sequence number of one MPDU in the A-MPDU Next, the TID value is carried in the TID Value subdomain.
  • the second ESI in the BA frame is located in the start sequence control subfield in the block acknowledgment information field.
  • 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, without indicating
  • the initial sequence number that is, the start sequence number subfield is a reserved field, in which case the second ESI in the BA frame may be located in the start sequence number subfield or the slice number subfield in the start sequence control subfield.
  • the second ESI is located in the first 3 bits or the last 3 bits in the slice number subfield.
  • the block acknowledges the bit table subfield.
  • the start sequence control subfield includes the start temporary sequence number, since the start sequence control subfield length is 12 bits, and the start temporary sequence number only needs 6 bits, so the start sequence can also be used to control the subfield.
  • the remaining bits carry the second ESI.
  • the second ESI may also be located in the block acknowledgement control field of the BA frame, or in the first 11 bits of the per-identity identification information subfield of the BA Info field, because In the case where the BA frame contains only one BA Info field, the first 11 bits of the sub-identification information sub-field are reserved bits.
  • the A-MPDU sent by the sending end also carries an Ack Policy.
  • the sending end receives the BA frame replied by the receiving end after sending the A-MPDU.
  • the BAR frame is also sent to the receiving end; the receiving end receives the BAR frame sent by the transmitting end before replying to the BA frame.
  • the time interval between the A-MPDU and the BAR frame is indeterminate, but the time interval between the BAR frame and the BA frame is usually a predefined value.
  • the first ESI is carried in each MPDU included in the A-MPDU, 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; Carrying 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, indicating that the A-MPDU, the BAR frame, and the BA frame belong to the same interaction sequence.
  • the BAR frame further carries a second sequence number type indication, where the second sequence number type indication is used to indicate whether the third ESI is included in the BAR frame.
  • the second sequence number type indication is located in a BAR control domain of the BAR frame, or a block acknowledgement request information field corresponding to the receiving end included in the BAR frame.
  • the setting manner of the third ESI includes but is not limited to the following methods:
  • the third ESI in the BAR frame is located in the per-stream identification information subfield in the block acknowledgment information field. As shown in FIG. 16, since the TID Value subfield of each flow identification information subfield in the block acknowledgment request information field in the BAR frame is a reserved field, the third ESI may be located in the TID Value subfield.
  • the starting sequence number subdomain in the BAR Info domain carries the temporary sequence number
  • the TID Value subdomain carries the third ESI
  • the third ESI in the BAR frame is located in the start sequence control subfield in the block acknowledgment information field.
  • 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, in the BAR frame.
  • the starting temporary sequence number that is, the starting sequence number subfield is a reserved field.
  • the third ESI in the BAR frame may be located in the starting sequence number subfield of 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 in the fragment number subfield.
  • the third ESI may also be located in a 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.
  • BAR Control Block Confirmation Request Control
  • the first 11 bits of the sub-identification information sub-field are reserved bits.
  • the transmitting end after transmitting the A-MPDU, the transmitting end further receives a BA frame replied by the sending end of the block, where the BA frame includes a block acknowledgment information field corresponding to the transmitting end, where the block acknowledgment information field includes a block acknowledgment bit table. a sub-domain, and the block acknowledgment information field includes a first sequence number type indication, the first sequence number type indicating a temporary for indicating that each bit of the block acknowledgment bit table sub-field corresponds to one MPDU in the A-MPDU
  • the serial number is determined by the transmitting end according to the value of each bit in the sub-field of the block acknowledgment bit table, and whether the MPDU corresponding to the temporary sequence number corresponding to each bit is correctly received.
  • the transmitting end saves the mapping relationship between the T-SN and the SN of each MPDU in the A-MPDU.
  • the transmitting end receives the BA frame sent by the receiving end, and the first sequence number type included in the receiving end indicates the first value, that is, each bit of the indicating block acknowledgment bit table subfield corresponds to an MPDU in the A-MPDU.
  • the sender can determine which SNs corresponding to the SN are correctly received by the receiving end according to the T-SN and SN mapping relationship and the value of each bit of the block acknowledgment table subfield. That is, the transmitting end receives the BA frame sent by the receiving end, and each bit of the BA Bitmap included in the BA frame corresponds to one T-SN.
  • the transmitting end Since the transmitting end knows the correspondence relationship between the T-SN and the SN, it can be based on the BA Bitmap. The value of each bit determines which SN corresponding MPDU is connected. The receiving end is correctly received. Note that for the case where the T-SN is carried by the sequence control domain, the transmitting end may not need to save the mapping relationship between the T-SN and the SN, because in this case, the T-SN and SN of the MPDU are the same.
  • the BA Info may include BA Info for multiple STAs, but not every BA Info uses the T-SN.
  • the UL A-MPDU of a certain STA is a single TID, or the UL A-MPDU is a multi-TID, but the AP only parses the MPDU of one TID.
  • the BAR frame sent by the AP also has a similar situation, that is, multiple BAR Infos in the BAR frame do not all include the T-SN.
  • the solution provided by the embodiment of the present invention may be applicable to the acknowledgement of the multi-TID A-MPDU sent by the receiving end to the single STA, and may also be applicable to the multi-TID sent by the receiving end to the multiple STAs in the MU mode.
  • the A-MPDU is acknowledged and can also be applied to the transmission and confirmation of the A-MPDU in which the MPDU and the slice coexist.
  • the MPDU is identified by the serial number
  • the MPDU fragment is identified by the ⁇ sequence number, fragment number>.
  • the MPDU and the MPDU fragment can be uniformly numbered by the temporary sequence number.
  • MPDUs and MPDU fragments may be the same TID or different TIDs.
  • MPDU fragments are uniformly numbered.
  • a data transmitting apparatus is further provided in the embodiment of the present invention.
  • the device mainly includes:
  • the configuration module 1501 is configured to separately configure a temporary sequence number of each MPDU included in the A-MPDU, where the A-MPDU includes multiple MPDUs, and the temporary sequence numbers of any two MPDUs included in the A-MPDU are different.
  • the TID of at least two MPDUs in the A-MPDU is different, and/or at least one MPDU includes a fragment;
  • the sending module 1502 is configured to send the A-MPDU after the configuration module 1501 configures the temporary sequence number.
  • the configuration module 1501 is specifically configured to: carry a corresponding temporary sequence number in each MPDU included in the A-MPDU; or carry in each MPDU except the first MPDU of the A-MPDU
  • the temporary MCU number does not carry the temporary sequence number, and the temporary sequence number corresponding to the first MPDU is a predefined value.
  • the A-MPDU also carries a temporary sequence number presence indication, and the temporary sequence number presence indication is used to indicate whether a temporary sequence number exists.
  • the temporary sequence number indication indication is used to indicate whether a temporary sequence number exists.
  • the apparatus further includes a receiving module 1503, configured to receive a BA frame, where the BA frame includes a block acknowledgement information field corresponding to the transmit end, where the block acknowledgement information field includes a block acknowledgement bit table subfield, and the block acknowledgement information
  • the field includes a first sequence number type indication, the first sequence number type indicating a temporary sequence number for indicating that each bit of the block acknowledgement bit table subfield corresponds to one MPDU in the A-MPDU;
  • the processing module 1504 is configured to determine, according to the value of each bit in the block acknowledgment bit table subfield in the BA frame received by the receiving module 1503, whether the MPDU corresponding to the temporary sequence number corresponding to each bit is correctly received.
  • the processing module 1504 is specifically configured to determine, 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 acknowledgment bit table subfield in the BA frame, Whether the MPDU corresponding to the temporary serial number is correctly received.
  • the block acknowledgment information field in the BA frame further includes a start sequence control subfield, where the start sequence control subfield includes a start temporary sequence number, where the start temporary sequence number is used to indicate in the BA frame.
  • the block confirms the temporary sequence number of the MPDU corresponding to the first bit in the bit table subfield.
  • each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where 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.
  • the current interaction sequence is identified, and the second ESI has the same value as the first ESI.
  • 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 may be referred to the description in the method embodiment, and details are not described herein again.
  • the sending module 1502 is further configured to send a block acknowledge request BAR frame after the receiving module 1503 receives the BA frame after transmitting the A-MPDU.
  • the third ESI is carried in the BAR frame, and the third ESI is used to identify the current interaction sequence, and the third ESI has the same value as the first ESI.
  • the manner of carrying the third ESI in the BAR frame can be referred to the description in the method embodiment part, and details are not described herein again.
  • the BAR frame further carries a second sequence number type indication, where the second sequence number type indication is used to indicate whether the third ESI is included in the BAR frame.
  • the second sequence number type indication is used to indicate whether the third ESI is included in the BAR frame.
  • a data receiving and confirming device is further provided in the embodiment of the present invention.
  • the device is mainly include:
  • the receiving module 1601 is configured to receive an A-MPDU sent by the sending end, where each MPDU included in the A-MPDU is configured with a corresponding temporary sequence number, where the A-MPDU includes multiple MPDUs, and the A-MPDU includes The temporary sequence numbers of any two MPDUs are different, wherein the stream identifiers TID of at least two MPDUs in the A-MPDU are different, and/or at least one MPDU includes a fragment;
  • the sending module 1602 is configured to send a block acknowledgement BA frame, where the BA frame includes a block acknowledgement information field corresponding to the transmit end, where the block acknowledgement information field includes a block acknowledgement bit table subfield, and the block acknowledgement information field includes a A sequence number type indication, the first sequence number type indicating a temporary sequence number for indicating that each bit of the block acknowledgment bit table subfield corresponds to an MPDU in the A-MPDU.
  • each 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, except for the first A-MPDU Each MPDU other than the 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.
  • the A-MPDU also carries a temporary sequence number presence indication, and the temporary sequence number presence indication is used to indicate whether a temporary sequence number exists.
  • the temporary sequence number existence indication is carried in the A-MPDU, refer to the description of the method part, and details are not described herein again.
  • the block acknowledgement information field of the BA frame further includes a start sequence control subfield, where the start sequence control subfield includes a start temporary sequence number, where the start temporary sequence number is used to indicate a block acknowledgement bit of the BA frame.
  • the temporary sequence number of the MPDU corresponding to the first bit in the table subfield.
  • the manner of carrying the first sequence number type indication in the BA frame can be referred to the description of the method part, and details are not described herein again.
  • each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where 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 the current interaction sequence, and the second ESI has the same value as the first ESI.
  • the receiving module 1601 is further configured to:
  • the sending module 1602 After receiving the A-MPDU, before the sending module 1602 sends the BA frame, it receives the block acknowledgement request BAR frame sent by the transmitting end.
  • the third ESI is carried in the BAR frame, and 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.
  • the BAR frame further carries a second sequence number type indication, where the second sequence number type indication is used to indicate whether the third ESI is included in the BAR frame.
  • the second sequence number type indication is used to indicate whether the third ESI is included in the BAR frame.
  • the device mainly includes a processor 1701, a memory 1702, and a transceiver 1703.
  • the transceiver 1703 receives and transmits data under the control of the processor 1701.
  • the memory 1702 stores a preset program, and the processor 1701
  • the program in the memory 1702 is read, and the following process is executed in accordance with the program:
  • At least two MPDUs have different TIDs, and/or at least one MPDU includes fragments;
  • the A-MPDU after configuring the temporary sequence number is transmitted through the transceiver 1703.
  • the processor 1701 is specifically configured to: carry a corresponding temporary sequence number in each MPDU included in the A-MPDU; or carry in each MPDU except the first MPDU of the A-MPDU
  • the temporary MCU number does not carry the temporary sequence number, and the temporary sequence number corresponding to the first MPDU is a predefined value.
  • the A-MPDU also carries a temporary sequence number presence indication, and the temporary sequence number presence indication is used to indicate whether a temporary sequence number exists.
  • the temporary sequence number indication indication is used to indicate whether a temporary sequence number exists.
  • the processor 1701 is configured to receive, by the transceiver 1703, a BA frame, where the BA frame includes a block acknowledgement information field corresponding to the transmit end, where the block acknowledgement information field includes a block acknowledgement bit table subfield, and the block acknowledgement information field Included in 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 one MPDU in the A-MPDU; The block in the BA frame confirms the value of each bit in the bit table sub-field, and determines whether the MPDU corresponding to the temporary sequence number corresponding to each bit is correctly received.
  • the processor 1701 is specifically configured to determine, 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 acknowledgment bit table subfield in the BA frame, Whether the MPDU corresponding to the temporary serial number is correctly received.
  • the block acknowledgment information field in the BA frame further includes a start sequence control subfield, where the start sequence control subfield includes a start temporary sequence number, where the start temporary sequence number is used to indicate in the BA frame.
  • the block confirms the temporary sequence number of the MPDU corresponding to the first bit in the bit table subfield.
  • each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where 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.
  • the current interaction sequence is identified, and the second ESI has the same value as the first ESI.
  • 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 may be referred to the description in the method embodiment, and details are not described herein again.
  • the processor 1701 instructs the transceiver 1703 to send a block acknowledgment request BAR frame before receiving the BA frame after transmitting the A-MPDU.
  • the third ESI is carried in the BAR frame, and the third ESI is used to identify the current interaction sequence, and the third ESI has the same value as the first ESI.
  • the manner of carrying the third ESI in the BAR frame can be referred to the description in the method embodiment part, and details are not described herein again.
  • the BAR frame further carries a second sequence number type indication, where the second sequence number type indication is used to indicate whether the third ESI is included in the BAR frame.
  • the second sequence number type indication is used to indicate whether the third ESI is included in the BAR frame.
  • FIG. 20 Another device is provided in the embodiment of the present invention.
  • the device is shown in FIG. It mainly includes a processor 1801, a memory 1802, and a transceiver 1803.
  • the transceiver 1803 receives and transmits 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.
  • each MPDU included in the A-MPDU is configured with a corresponding temporary sequence number, where the A-MPDU includes multiple MPDUs, and any two of the A-MPDUs are included.
  • the temporary sequence numbers of the MPDUs are different, where the A-MPDU
  • the stream identifier TID of at least two MPDUs is different, and/or at least one MPDU includes a fragment;
  • the transceiver 1803 Transmitting, by the transceiver 1803, a block acknowledgement BA frame, where the BA frame includes a block acknowledgement information field corresponding to the transmit end, where the block acknowledgement information field includes a block acknowledgement bit table subfield, and the block acknowledgement information field includes the first sequence
  • the number type indicates that the first sequence number type indicates a temporary sequence number for indicating that each bit of the block acknowledgment bit table subfield corresponds to one MPDU in the A-MPDU.
  • each 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, except for the first A-MPDU Each MPDU other than the 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.
  • the A-MPDU also carries a temporary sequence number presence indication, and the temporary sequence number presence indication is used to indicate whether a temporary sequence number exists.
  • the temporary sequence number existence indication is carried in the A-MPDU, refer to the description of the method part, and details are not described herein again.
  • the block acknowledgement information field of the BA frame further includes a start sequence control subfield, where the start sequence control subfield includes a start temporary sequence number, where the start temporary sequence number is used to indicate a block acknowledgement bit of the BA frame.
  • the temporary sequence number of the MPDU corresponding to the first bit in the table subfield.
  • the manner of carrying the first sequence number type indication in the BA frame can be referred to the description of the method part, and details are not described herein again.
  • each MPDU included in the A-MPDU carries a first interaction sequence identifier ESI, where 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 the current interaction sequence, and the second ESI has the same value as the first ESI.
  • the processor 1801 instructs the transceiver 1803 to send the BA after receiving the A-MPDU. Before the frame, the block acknowledges the requesting BAR frame sent by the transmitting end.
  • the third ESI is carried in the BAR frame, and 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.
  • the BAR frame further carries a second sequence number type indication, where the second sequence number type indication is used to indicate whether the third ESI is included in the BAR frame.
  • the second sequence number type indication is used to indicate whether the third ESI is included in the BAR frame.
  • the transmitting end separately configures the information included in the A-MPDU.
  • the temporary sequence number of each MPDU, the temporary sequence number of all MPDUs in the A-MPDU is a uniform number, to ensure that the temporary sequence numbers of any two MPDUs included in the A-MPDU are different, so that the receiving end is replying to the BA.
  • all the MPDUs in the A-MPDU can be acknowledged in the BA frame according to the temporary sequence number of each MPDU in the A-MPDU, thereby reducing the transmission overhead of the BA frame and solving the problem. I have identified difficult problems.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can 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.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Communication Control (AREA)

Abstract

L'invention concerne un procédé d'émission de données, ainsi qu'un procédé et dispositif servant à confirmer la réception de données, afin de résoudre un problème caractérisé en ce qu'une extrémité réceptrice nécessite d'énormes surcapacités pour la confirmation d'émission et éprouve des difficultés à effectuer la confirmation lorsque des unités de données de protocole de commande d'accès au support (MPDU) d'une unité agrégée de données de protocole de commande d'accès au support (A-MPDU) présentent des TID multiples et/ou lorsque certaines des MPDU sont fragmentées. Le procédé d'émission de données comporte les étapes consistant à: faire attribuer, par une extrémité émettrice, des numéros d'ordre temporaires à des MPDU respectives comprises dans une A-MPDU, deux MPDU quelconques de l'A-MPDU présentant des numéros d'ordre temporaires différents, au moins deux MPDU de l'A-MPDU présentant des TID différents, et/ou au moins une MPDU étant fragmentée; et faire émettre, par l'extrémité émettrice, l'A-MPDU à laquelle sont attribués les numéros d'ordre temporaires.
PCT/CN2016/080881 2015-09-30 2016-05-03 Procédé d'émission de données, et procédé et dispositif pour confirmer la réception de données WO2017054448A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201680052200.9A CN108028836B (zh) 2015-09-30 2016-05-03 数据发送方法、数据接收确认方法及装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2015091282 2015-09-30
CNPCT/CN2015/091282 2015-09-30

Publications (1)

Publication Number Publication Date
WO2017054448A1 true WO2017054448A1 (fr) 2017-04-06

Family

ID=58422649

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/080881 WO2017054448A1 (fr) 2015-09-30 2016-05-03 Procédé d'émission de données, et procédé et dispositif pour confirmer la réception de données

Country Status (2)

Country Link
CN (1) CN108028836B (fr)
WO (1) WO2017054448A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114339875A (zh) * 2020-09-30 2022-04-12 华为技术有限公司 信息传输方法和通信装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7675911B2 (en) * 2007-03-01 2010-03-09 Samsung Electronics Co., Ltd. Method and system for acknowledgements in wireless communications
CN103081394A (zh) * 2010-09-03 2013-05-01 高通股份有限公司 聚合mpdu（a-mpdu）数字学和mpdu群组
CN103201976A (zh) * 2010-11-09 2013-07-10 高通股份有限公司 聚合分组传输中的分组级擦除保护编码

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4440037B2 (ja) * 2004-08-11 2010-03-24 株式会社東芝 通信装置及び通信方法
US20090303871A1 (en) * 2008-06-10 2009-12-10 Electronics Telecommunications Research Institute Method and apparatus for packet aggregation according to traffic characteristics

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7675911B2 (en) * 2007-03-01 2010-03-09 Samsung Electronics Co., Ltd. Method and system for acknowledgements in wireless communications
CN103081394A (zh) * 2010-09-03 2013-05-01 高通股份有限公司 聚合mpdu（a-mpdu）数字学和mpdu群组
CN103201976A (zh) * 2010-11-09 2013-07-10 高通股份有限公司 聚合分组传输中的分组级擦除保护编码

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114339875A (zh) * 2020-09-30 2022-04-12 华为技术有限公司 信息传输方法和通信装置
CN114339875B (zh) * 2020-09-30 2024-04-12 华为技术有限公司 信息传输方法和通信装置

Also Published As

Publication number Publication date
CN108028836A (zh) 2018-05-11
CN108028836B (zh) 2020-05-08

Similar Documents

Publication Publication Date Title
US10790937B1 (en) Hybrid automatic repeat request for wireless local area network
US11075717B2 (en) Receiving state indication method for A-MPDU and receive end device
US11464059B2 (en) Acknowledgment data unit for multiple uplink data units
CN107078858B (zh) 在无线lan系统中发送和接收多用户块确认帧的方法及其设备
US11082888B2 (en) Single acknowledgment policy for aggregate MPDU
CN106161583B (zh) 一种块确认帧的传输方法及设备
EP3713122B1 (fr) Procédé permettant de répondre à une trame d'accusé de réception, appareil et système de transmission de données
CN104852777B (zh) 多目标聚合传输方法和相关设备及系统
JP2008508812A (ja) 共用資源ネットワークにおける可変長確認応答用のシステムおよび方法
JP2008510351A (ja) 共通無線チャネルによって接続された複数の局を含むネットワークにおいてデータパケットに対して確認応答する方法
US11309998B2 (en) Hybrid automatic repeat request for wireless local area network
CN115664585A (zh) 无线通信方法及其无线通信终端
KR101178625B1 (ko) 무선 통신 시스템에서 상태 보고 트리거링
WO2013064007A1 (fr) Procédé et dispositif de transmission de trame d'accusé de réception dans un réseau local sans fil
JP2019513308A (ja) ブロック肯定応答送信のための通信方法及び通信装置
EP3790213B1 (fr) Demande de répétition automatique hybride basée sur mac (harq)
WO2016180280A1 (fr) Procédé et dispositif d'envoi de trame d'accusé de réception de bloc
CN107548104B (zh) 数据传输方法、接入点及站点
WO2017054448A1 (fr) Procédé d'émission de données, et procédé et dispositif pour confirmer la réception de données
KR100631742B1 (ko) Ａｃｋ 프레임 전송 방법 및 장치
KR20220111151A (ko) 축약 ba 구성 및 시그널링 기법
WO2023052306A1 (fr) Dispositifs et procédés de communication
KR20220047108A (ko) 축약 ba 구성 및 시그널링 기법

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16850073

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16850073

Country of ref document: EP

Kind code of ref document: A1