WO2014000593A1 - 数据通信装置和数据通信方法 - Google Patents

数据通信装置和数据通信方法 Download PDF

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Publication number
WO2014000593A1
WO2014000593A1 PCT/CN2013/077491 CN2013077491W WO2014000593A1 WO 2014000593 A1 WO2014000593 A1 WO 2014000593A1 CN 2013077491 W CN2013077491 W CN 2013077491W WO 2014000593 A1 WO2014000593 A1 WO 2014000593A1
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Prior art keywords
data
bits
data frame
frame
value
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PCT/CN2013/077491
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English (en)
French (fr)
Inventor
董贤东
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Dongguan Yulong Telecommunication Technology Co Ltd
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Dongguan Yulong Telecommunication Technology Co Ltd
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Publication of WO2014000593A1 publication Critical patent/WO2014000593A1/zh
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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/1607Details of the supervisory signal
    • H04L1/1614Details of the supervisory signal using bitmaps

Definitions

  • the present invention relates to the field of communications technologies, and in particular to data communication devices and data communication methods. Background technique
  • the sender sends a data frame to the receiver, and the ACK policy in the QoS (Quality of Service) field of the frame header FC (frame control domain) In the domain, use "0" or "1" to identify whether the receiver is required to reply to the ACK (acknowledgement) message. Generally, this subfield is set to ", indicating that the receiver replies to the sender and acknowledges that the data frame is acknowledged. Complete reception. Under the existing standard, the complete frame structure of the ACK is shown in Figure 1.
  • Block ACK defined by 802.11.
  • Block Acknowledgment, block acknowledgment mechanism, its MAC (Media Access Control) frame part definition format is shown in Figure 2.
  • Block ACK starting sequence control indicates the sequence number at which the data frame starts to be transmitted.
  • Block Ack Bitmap is a vector of 128 bytes in length, consisting of "0". " , " 1 " is composed. If n is set to "0" in the Bitmap, the data frame indicating that n is added from the start sequence is not received by the receiver. Setting "1" means adding from the start sequence. This data frame of n is received by the receiver.
  • Short ACK In the newly established working group l lah of 802.11, in order to further save power between AP (Access Point) and STA (Station, terminal/site), a new ACK format, called Short ACK, is defined.
  • the frame that is, the SIG (signal) field in the physical frame header in the Short ACK replaces the role of the MAC frame in the existing ACK, and the specific format is as shown in FIG.
  • the SIG field format of Short ACK is shown in the following table:
  • the technical problem to be solved by the present invention is to provide a new technical solution, which enables an access point or terminal in a wireless network to use a compressed block to acknowledge a message frame as a return to send after receiving a data frame continuously transmitted by the sender.
  • the party's confirmation message notifies the sender whether it has completely received the data frames continuously sent by it, which is beneficial to ensure that the transmitting and receiving parties save power.
  • the present invention provides a data communication apparatus, including: a service processing module, which continuously receives a plurality of data frames through a wireless transceiver module to generate a compressed block acknowledgement message frame, where the compressed block acknowledgement message frame includes multiple data frames An indication bit, where the length of the plurality of data frame indication bits indicates a maximum number of data frames continuously sent by the sender, and the length of the plurality of data frame indication bits is n bits, if the data frame continuously sent by the sender If the number of the k-th bit in the plurality of data frame indication bits is the first value, the k-th data frame sent by the sender is completely received by the service processing module, and Or the value of the kth bit is a second value, indicating that the kth data frame is not completely received by the service processing module, and the compressed block acknowledgement message frame is sent by the wireless transceiver module; a wireless transceiver module, configured to exchange data with the outside of the data communication device.
  • the data communication device may be a router, a mobile phone, a tablet computer, a notebook computer, etc.
  • the service processing module is equivalent to a chip for processing a wireless local area network service
  • the wireless transceiver module is equivalent to an antenna for transmitting and receiving a wireless local area network signal, and can be used as an STA.
  • the AP after receiving the data frame sent by the sender continuously, can notify the other party whether the data frame is completely received by compressing the block confirmation message frame, without using the existing Block ACK, and need not receive the data frame. Each data frame is replied to ensure that both the sender and the receiver save power.
  • n and k are both positive integers.
  • the plurality of data frame indication bits are "00011111111111111111111", and the length thereof is 26 bits, indicating that the receiver continuously receives 26 data frames, wherein the values of the first three bits are "0", indicating the first The data frame, the second data frame and the third data frame are not completely received by the receiver.
  • the multiple data frame indication bits include a plurality of bits in a physical frame header of the compressed block acknowledgement message frame.
  • the physical frame header of the message frame can be confirmed by the compressed block to identify.
  • the compressed block acknowledgement message frame includes only LTF (long training frame), STF (short training frame), and SIG (signal).
  • the plurality of data frame indication bits include a plurality of bits of a signal domain in the physical frame header of the compressed block acknowledgement message frame.
  • the SIG-B part in the SIG domain can be selected for identification.
  • the length of the plurality of data frame indication bits is 26 bits, and in the 4 MHz channel, the length of the plurality of data frame indication bits is 27 bits, In the 8 MHz and 16 MHz channels, the plurality of data frame indication bits have a length of 29 bits.
  • the length of SIG-B is also different in different channels, which are 26, 27, and 29 bits, respectively, and all of them can be used as data frame indication bits.
  • the value of the kth bit is a first value and k is less than or When it is equal to m, it indicates that the kth data frame is completely received by the service processing module, and/or the value of the kth bit is a second value and k is less than or equal to m, indicating the kth
  • the sending is The party did not send the m+1th to nth data frames.
  • the vacant bits of the data frame indication bits can be uniformly set to "1" or "0".
  • m is a positive integer.
  • the plurality of data frame indication bits are "00011 11 111 11 111 11 111 1 ", wherein the first 12 bits indicate that the number of consecutively transmitted data frames of the sender is 12, and the last 14 bits indicate that it is not The number of data frames sent, where the first data frame, the second data frame, and the third data frame are not completely received, and the data frame that is not transmitted is indicated by "1".
  • the service processing module further records the number of data frames continuously sent by the sender.
  • the receiver can indicate whether a data frame is not completely received or the sender does not send the corresponding data frame by the value of the data frame indication bit. For example, if multiple data frame indication bits are
  • the receiver records that the sender has continuously transmitted 26 data frames.
  • the service receiving module further receives, by the wireless transceiver module, a data frame that is not completely received.
  • a data frame that is not completely received it can be received again. For example, if multiple data frame indication bits are, the receiver should re-receive the first data frame, the second data frame, and the third data frame.
  • the present invention further provides a data communication method, including: continuously receiving a plurality of data frames; generating a compressed block acknowledgement message frame, wherein the compressed block acknowledgement message frame includes a plurality of data frame indication bits, and the plurality of data frame indication bits
  • the length of the data frame indicates the maximum number of data frames continuously transmitted by the sender, and the length of the plurality of data frame indication bits is n bits. If the number of data frames continuously transmitted by the sender is n, the multiple data frames When the value of the kth bit in the indication bit is the first value, it indicates that the kth data frame sent by the sender is completely received by the receiver, and/or the value of the kth bit is the second value.
  • n and k are both positive integers.
  • the plurality of data frame indication bits are "00011 11 111 11 111 11 111 11 11 " and the length is 26 bits, indicating that the receiver continuously receives 26 data frames, wherein the values of the first three bits are It is "0", indicating the first data frame, and the second data frame and the third data frame are not completely received by the receiver.
  • the multiple data frame indication bits include a plurality of bits in a physical frame header of the compressed block acknowledgement message frame.
  • the physical frame header of the message frame can be confirmed by the compressed block to identify.
  • the compressed block acknowledgement message frame includes only LTF (long training frame), STF (short training frame), and SIG (signal)
  • the multiple data frame indication bits include multiple bits of a signal domain in the physical frame header of the compressed block acknowledgement message frame.
  • the SIG-B part in the SIG domain may be selected for identification, and those skilled in the art should understand that here is only an example, and other positions may also be used as data frame indication bits.
  • the length of the plurality of data frame indication bits is 26 bits, and in the 4 MHz channel, the length of the plurality of data frame indication bits is 27 bits, In the 8 MHz and 16 MHz channels, the plurality of data frame indication bits have a length of 29 bits.
  • the length of SIG-B is also different in different channels, which are 26, 27, and 29 bits, respectively, and all of them can be used as data frame indication bits.
  • the value of the kth bit is a first value and k is less than or When it is equal to m, it indicates that the kth data frame is completely received by the receiver, and/or the value of the kth bit is a second value and k is less than or equal to m, indicating the kth data.
  • the frame is not completely received by the receiver, and when the m+1th bit to the nth bit of the plurality of data frame indication bits are the first value or the second value, the sender is not Send the m+1th to nth data frames.
  • the vacant bit of the data frame indication bit can be uniformly set to "1" or "0".
  • m is a positive integer.
  • the plurality of data frame indication bits are "00011111111111111111111111", wherein the first 12 bits indicate that the number of data frames continuously transmitted by the sender is 12, and the last 14 bits indicate the number of data frames that are not transmitted, where the first The data frame, the second data frame, and the third data frame are not completely received, and the data frame that is not transmitted is indicated by "1".
  • the method further includes: recording the number of data frames continuously sent by the sender.
  • the receiver can indicate whether a data frame is not completely received by the value of the data frame indication bit, or whether the sender does not send the corresponding data frame. For example, if multiple data frame indication bits are
  • the method further includes: re-receiving the data that is not completely received. frame.
  • re-receiving the data that is not completely received. frame if there is a data frame that is not completely received, it can be received again. For example, if multiple data frame indication bits are "00011 11 111 11 111 11 111 11 11 " , where the value of the first three bits is "0", then the receiver should re-receive the first data frame, the second data Frame and third data frame.
  • the present invention also provides a data communication apparatus, including: a service processing module, generating a plurality of data frames, and continuously transmitting the plurality of data frames through a wireless transceiver module, and receiving a compressed block acknowledgement message frame by the wireless transceiver module,
  • the compressed block acknowledgment message frame includes a plurality of data frame indication bits, where the length of the plurality of data frame indication bits indicates a maximum number of data frames continuously sent by the service processing module, and the plurality of data frame indication bits The length is n bits.
  • the service processing module is The transmitted kth data frame is completely received by the receiver, and/or the value of the kth bit is a second value, indicating that the kth data frame is not completely received by the receiver; And a transceiver module, configured to exchange data with the outside of the data communication device.
  • the data communication device may be a router, a mobile phone, a tablet computer, a notebook computer, etc.
  • the service processing module is equivalent to a chip for processing a wireless local area network service
  • the wireless transceiver module is equivalent to an antenna for transmitting and receiving a wireless local area network signal, and can be sent as an STA.
  • the data frame, and the compressed block message acknowledgement frame replied by the receiver can determine whether the other party has completely received each data frame without receiving the existing Block ACK, and does not need to send each data frame after sending each data frame.
  • Receiving a confirmation message ensures that both the sender and the receiver can save power.
  • n and k are both positive integers.
  • the plurality of data frame indication bits are "00011 11 111 11 111 11 111 11 11 " and the length thereof is 26 bits, indicating that the sender continuously transmits 26 data frames, wherein the values of the first three bits are It is "0", indicating the first data frame, and the second data frame and the third data frame are not completely received by the receiver.
  • the plurality of data frame indication bits include a plurality of bits in a physical frame header of the compressed block acknowledgement message frame.
  • the physical frame header of the compressed block acknowledgement message can be used for identification.
  • the compressed block acknowledgement message frame includes only LTF (long training frame), STF (short training frame), and SIG (signal).
  • the multiple data frame indication bits include the compressed block A plurality of bits of the signal domain in the physical frame header of the message frame are acknowledged.
  • the SIG-B part that can play the role of the SIG domain can be selected, and those skilled in the art should understand that, here is only an example, and other positions may also be used as data frame indication bits.
  • the length of the plurality of data frame indication bits is 26 bits, and in the 4 MHz channel, the length of the plurality of data frame indication bits is 27 bits, In the 8 MHz and 16 MHz channels, the plurality of data frame indication bits have a length of 29 bits.
  • the length of SIG-B is also different in different channels, which are 26, 27, and 29 bits, respectively, and all of them can be used as data frame indication bits.
  • the value of the kth bit is a first value and k is smaller than Or equal to m, indicating that the kth data frame is completely received by the receiver, and/or the value of the kth bit is a second value and k is less than or equal to m, indicating the kth
  • the data frame is not completely received by the receiver, and when the m+1th bit to the nth bit of the plurality of data frame indication bits are the first value or the second value, the service processing is performed.
  • the module did not send the m+1th through nth data frames.
  • the vacant bits of the data frame indication bits can be uniformly set to "1" or "0".
  • m is a positive integer.
  • the plurality of data frame indication bits are "00011111111111111111111111", wherein the first 12 bits indicate that the number of data frames continuously transmitted by the sender is 12, and the last 14 bits indicate the number of data frames that are not transmitted, where the first The data frame, the second data frame, and the third data frame are not completely received, and the data frame that is not transmitted is indicated by "1".
  • the service processing module further records the number of data frames continuously sent by the sender.
  • the value of the data frame indication bit in the message frame can be confirmed according to the compressed block, and it is determined whether a certain data frame is not completely received, or the sender does not send the corresponding data frame. . For example, if multiple data frame indication bits are "00011111111111111111111111" and its length is 26 bits, then the sender records that 26 data frames have been continuously transmitted.
  • the service module further retransmits, by the wireless transceiver module, a data frame that is not completely received by the receiver.
  • a data frame can be resent once if it is not completely received by the receiver. For example, if multiple data frame indication bits are "00011 111 11 111 11 111 11 111 11 1 " , where the values of the first three bits are
  • the sender should resend the first data frame, the second data frame and the third data frame.
  • the present invention also provides a data communication method, including: generating a plurality of data frames, and continuously transmitting the plurality of data frames; receiving a compressed block acknowledgement message frame, wherein the compressed block acknowledgement message frame includes a plurality of data frame indicator bits
  • the length of the multiple data frame indication bits indicates the maximum number of data frames continuously sent by the sender, and the length of the multiple data frame indication bits is n bits, if the number of data frames continuously sent by the sender If n, the value of the kth bit of the plurality of data frame indication bits is a first value, indicating that the kth data frame sent by the sender is completely received by the receiver, and/or the kth bit When the value of the bit is the second value, it indicates that the kth data frame is not completely received.
  • the compressed block acknowledgment message frame replied by the receiver can be used to determine whether the other party has completely received each data frame, and does not need to receive the existing Block ACK, and does not need to send each data frame. Both receive a confirmation message to ensure that both the sender and the receiver save power.
  • n and k are both positive integers.
  • the plurality of data frame indication bits are "00011 11 111 11 111 11 111 11 11 " and the length thereof is 26 bits, indicating that the sender continuously transmits 26 data frames, wherein the values of the first three bits are It is "0", indicating the first data frame, and the second data frame and the third data frame are not completely received by the receiver.
  • the plurality of data frame indication bits include a plurality of bits in a physical frame header of the compressed block acknowledgement message frame.
  • the physical frame header of the message frame can be confirmed by the compressed block to identify.
  • the compressed block acknowledgement message frame includes only LTF (long training frame), STF (short training frame), and SIG (signal).
  • the plurality of data frame indication bits include a plurality of bits of a signal domain in the physical frame header of the compressed block acknowledgement message frame.
  • the SIG-B part that can serve as the SIG domain can be selected, and those skilled in the art should understand that, here is only an example, and other locations may also be used as data frame indication bits.
  • the length of the plurality of data frame indication bits is 26 bits, and in the 4 MHz channel, the length of the plurality of data frame indication bits
  • the 27-bit bit, in the 8 MHz and 16 MHz channels, the length of the plurality of data frame indication bits is 29 bits.
  • the length of SIG-B is also different in different channels, which are 26, 27, and 29 bits, respectively, and all of them can be used as data frame indication bits.
  • the value of the kth bit is a first value and k is less than or When it is equal to m, it indicates that the kth data frame is completely received by the receiver, and/or the value of the kth bit is a second value and k is less than or equal to m, indicating the kth data.
  • the frame is not completely received by the receiver, and when the m+1th bit to the nth bit of the plurality of data frame indication bits are the first value or the second value, the sender is not Send the m+1th to nth data frames.
  • the vacant bits of the data frame indication bits can be uniformly set to "1" or "0".
  • m is a positive integer.
  • the plurality of data frame indication bits are "00011111111111111111111111", wherein the first 12 bits indicate that the number of data frames continuously transmitted by the sender is 12, and the last 14 bits indicate the number of data frames that are not transmitted, where the first The data frame, the second data frame, and the third data frame are not completely received, and the data frame that is not transmitted is indicated by "1".
  • the method further includes: recording the number of data frames continuously sent by the sender.
  • recording the number of data frames continuously sent by the sender it can be confirmed according to the compressed block; the value of the data frame indication bit in the sacred frame is determined whether a data frame is not completely received, or the sender does not send the corresponding Data Frame. For example, if multiple data frame indication bits are
  • the method further includes: resending a data frame that is not completely received by the receiver.
  • resending a data frame that is not completely received by the receiver if there is a data frame that is not completely received by the receiver, it can be resent once. For example, if multiple data frame indication bits are
  • a data communication device and a data communication method can be implemented, and the access point or the terminal in the wireless network can be utilized after receiving the data frame continuously sent by the sender.
  • the compressed block acknowledgement frame is used as an acknowledgement message returned to the sender, and the sender is notified whether the data frame is continuously transmitted by the sender, which is beneficial to ensure that both the transceiver and the receiver save power.
  • FIG. 2 is a schematic structural diagram of a block acknowledgment message frame in the prior art solution
  • FIG. 3 is a comparison diagram of an acknowledgment message frame and a compressed block acknowledgment message frame in the prior art scheme.
  • FIG. 4 is a block diagram of a data communication apparatus according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of a data communication method according to an embodiment of the present invention.
  • FIG. 6 is a block diagram of a data communication device in accordance with one embodiment of the present invention.
  • FIG. 7 is a flow chart of a data communication method in accordance with one embodiment of the present invention.
  • FIG. 8 is a flowchart showing the operation of the data notifying apparatus according to an embodiment of the present invention. detailed description
  • FIG. 4 is a block diagram of a data communication device in accordance with one embodiment of the present invention.
  • the present invention provides a data communication apparatus 400, including: a service processing module 402, which continuously receives a plurality of data frames through a wireless transceiver module 404, and generates a compressed block acknowledgement message frame, where the compressed block acknowledges a message frame.
  • a service processing module 402 which continuously receives a plurality of data frames through a wireless transceiver module 404, and generates a compressed block acknowledgement message frame, where the compressed block acknowledges a message frame.
  • the transceiver module 404 is configured to exchange data with the data communication device 400 externally.
  • the data communication device 400 may be a device such as a router, a mobile phone, a tablet computer, a notebook computer, etc.
  • the service processing module 402 is equivalent to a chip for processing a wireless local area network service
  • the wireless transceiver module 404 is equivalent to an antenna for transmitting and receiving a wireless local area network signal. It can be used as a STA or AP. After receiving the data frame sent by the sender continuously, it can notify the other party whether the data frame is completely received by compressing the block confirmation message frame without using the existing Block ACK. It is necessary to reply after receiving each data frame to ensure that both the sender and the receiver can save power. Where n and k are both positive integers.
  • the plurality of data frame indication bits are "00011111111111111111111", and the length thereof is 26 bits, indicating that the receiver continuously receives 26 data frames, wherein the values of the first three bits are "0", indicating the first The data frame, the second data frame and the third data frame are not completely received by the receiver.
  • the plurality of data frame indication bits include a plurality of bits in a physical frame header of the compressed block acknowledgment message frame.
  • the physical frame header of the compressed block acknowledgment message can be used for identification.
  • the compressed block acknowledgement message frame includes only LTF (long training frame), STF (short training frame), and SIG (signal).
  • the multiple data frame indication bits include a plurality of bits of a signal domain in the physical frame header of the compressed block acknowledgment message frame.
  • the SIG-B part of the SIG domain can be selected for identification.
  • Those skilled in the art should understand that here is only an example, and other positions may also be used as data frame indication bits.
  • the length of the plurality of data frame indication bits is 26 bits, and in the 4 MHz channel, the length of the plurality of data frame indication bits is 27 bits, at 8 MHz and 16 MHz.
  • the plurality of data frame indication bits have a length of 29 bits.
  • the length of SIG-B is also different in different channels, which are 26, 27, and 29 bits, respectively, and all of them can be used as data frame indication bits.
  • the value of the kth bit is the first value and k is less than or equal to m. Representing that the kth data frame is completely received by the service processing module 402, and/or When the value of the kth bit is the second value and k is less than or equal to m, it indicates that the kth data frame is not completely received by the service processing module 402, and the m+ of the plurality of data frame indication bits When the 1st bit to the nth bit are the first value or the second value, it indicates that the sender does not transmit the m+1th to nth data frames.
  • the vacant bits of the data frame indication bit can be uniformly set to "1" or "0".
  • m is a positive integer.
  • the plurality of data frame indication bits are "00011111111111111111111111", wherein the first 12 bits indicate that the number of data frames continuously transmitted by the sender is 12, and the last 14 bits indicate the number of data frames that are not transmitted, where the first The data frame, the second data frame, and the third data frame are not completely received, and the data frame that is not transmitted is indicated by "1".
  • the service processing module 402 also records the number of data frames continuously sent by the sender.
  • the receiver can indicate that a certain data frame is not completely received by the value of the data frame indication bit, or the sender does not send the corresponding data frame. For example, if multiple data frame indication bits are "00011111111111111111111111" and its length is 26 bits, then the receiver records that the sender has continuously transmitted 26 data frames.
  • the service receiving module 402 further receives the data frame that is not completely received through the wireless transceiver module.
  • the service receiving module 402 if there is a data frame that is not completely received, it can be received again. For example, if multiple data frame indication bits are "00011111111111111111111", where the value of the first three bits is "0", then the receiver should re-receive the first data frame, the second data frame, and the third data frame.
  • Figure 5 is a flow diagram of a method of data communication in accordance with one embodiment of the present invention.
  • the present invention further provides a data communication method, including: Step 502: Continuously receiving a plurality of data frames; Step 504: Generate a compressed block acknowledgement message frame, where the compressed block acknowledgement message frame includes multiple data a frame indication bit, where the length of the plurality of data frame indication bits indicates a maximum number of data frames continuously transmitted by the sender, and the length of the plurality of data frame indication bits is n bits, if the sender continuously transmits data The number of frames is n, and when the value of the kth bit in the plurality of data frame indication bits is the first value, it indicates that the kth data frame sent by the sender is completely received by the receiver, and/or When the value of the kth bit is the second value, it indicates the kth The data frames are not completely received by the receiver; Step 506: Send the compressed block acknowledgement message frame.
  • the message block after receiving the data frame continuously sent by the sender, the message block can be notified by the compressed block to notify the other party whether each data frame has been completely received, without using the existing Block ACK, nor It is necessary to reply after receiving each data frame to ensure that both the sender and the receiver can save power.
  • n and k are both positive integers.
  • the plurality of data frame indication bits are "00011 111 11 111 11 111 11 1 " and the length thereof is 26 bits, indicating that the receiver continuously receives 26 data frames, wherein the values of the first three bits are It is "0", indicating the first data frame, and the second data frame and the third data frame are not completely received by the receiver.
  • the plurality of data frame indication bits include a plurality of bits in a physical frame header of the compressed block acknowledgment message frame.
  • the physical frame header of the compressed block acknowledgment message can be used for identification.
  • the compressed block acknowledgement message frame includes only LTF (long training frame), STF (short training frame), and SIG (signal).
  • the multiple data frame indication bits include a plurality of bits of a signal domain in the physical frame header of the compressed block acknowledgment message frame.
  • the SIG-B part in the SIG domain can be selected for identification, and those skilled in the art should understand that here is merely an example, and other positions may also be used as data frame indication bits.
  • the length of the plurality of data frame indication bits is 26 bits, and in the 4 MHz channel, the length of the plurality of data frame indication bits is 27 bits, at 8 MHz and 16 MHz.
  • the plurality of data frame indication bits have a length of 29 bits.
  • the length of SIG-B is also different in different channels, which are 26, 27, and 29 bits, respectively, and all of them can be used as data frame indication bits.
  • the value of the kth bit is the first value and k is less than or equal to m. , indicating that the kth data frame is completely received by the receiver, and/or the value of the kth bit is a second value and k is less than or equal to m, indicating that the kth data frame is not
  • the receiving party is completely received, and when the m+1th bit to the nth bit of the plurality of data frame indication bits are the first value or the second value, it indicates that the sender does not send the mth +1 to nth data frames.
  • the vacant bits of the data frame indication bit can be uniformly set to "1" or "0".
  • m is a positive integer.
  • the plurality of data frame indication bits are "00011111111111111111111", wherein the first 12 bits indicate that the number of data frames continuously transmitted by the sender is 12, and the last 14 bits indicate the number of data frames that are not transmitted, where the first The data frame, the second data frame, and the third data frame are not completely received, and the data frame that is not transmitted is indicated by "1".
  • the method further includes: recording the number of data frames continuously sent by the sender.
  • the receiver can indicate whether a data frame is not completely received by the value of the data frame indication bit, or whether the sender does not send the corresponding data frame. For example, if multiple data frame indication bits are "00011111111111111111111111" and its length is 26 bits, then the receiver records that the sender has continuously sent 26 data frames.
  • the method further includes: re-receiving the data frame that is not completely received.
  • re-receiving the data frame that is not completely received if there is a data frame that is not completely received, it can be received again. For example, if multiple data frame indication bits are "00011111111111111111111", where the value of the first three bits is "0", the receiver should re-receive the first data frame, the second data frame, and the third data frame.
  • Figure 6 is a block diagram of a data communication device in accordance with one embodiment of the present invention.
  • the present invention further provides a data communication apparatus 600, including: a service processing module 602, generating a plurality of data frames, and continuously transmitting the plurality of data frames by using a wireless transceiver module 604, and passing the wireless
  • the transceiver module 604 receives the compressed block acknowledgment message frame, where the compressed block acknowledgment message frame includes a plurality of data frame indication bits, and the length of the plurality of data frame indication bits indicates the maximum of the data frames continuously sent by the service processing module 602.
  • the number of the plurality of data frame indication bits is n bits. If the number of consecutively transmitted data frames by the service processing module 602 is n, the plurality of data frames indicate the value of the kth bit in the bits.
  • the value When the value is the first value, it indicates that the kth data frame sent by the service processing module 602 is completely received by the receiver, and/or the value of the kth bit is the second value, indicating the kth data.
  • the frame is not completely received by the receiver; the wireless transceiver module 604 is configured to exchange data with the outside of the data communication device 600.
  • the data communication device 600 can be a device such as a router, a mobile phone, a tablet computer, a notebook computer, etc.
  • the service processing module 602 is equivalent to processing the wireless local area network industry.
  • the wireless chip transceiver 604 is equivalent to an antenna for transmitting and receiving wireless local area network signals, and can transmit data frames as STAs, and can determine whether the other party has completely received each data frame by using a compressed block acknowledgement message frame replied by the receiver. There is no need to receive the existing Block ACK, and there is no need to receive a confirmation message after sending each data frame, which ensures that both the sender and the receiver can save power.
  • n and k are both positive integers.
  • the plurality of data frame indication bits are "00011 11 111 11 111 11 111 11 11 " and the length thereof is 26 bits, indicating that the sender continuously transmits 26 data frames, wherein the values of the first three bits are It is "0", indicating the first data frame, and the second data frame and the third data frame are not completely received by the receiver.
  • the plurality of data frame indication bits include a plurality of bits in a physical frame header of the compressed block acknowledgment message frame.
  • the physical frame header of the message frame can be confirmed by the compressed block to identify.
  • the compressed block acknowledgement message frame includes only LTF (long training frame), STF (short training frame), and SIG (signal).
  • the multiple data frame indication bits include a plurality of bits of a signal domain in the physical frame header of the compressed block acknowledgment message frame.
  • the SIG-B part which can serve as the SIG domain can be selected, and those skilled in the art should understand that this is only an example, and other positions may also be used as data frame indication bits.
  • the length of the plurality of data frame indication bits is 26 bits, and in the 4 MHz channel, the length of the plurality of data frame indication bits is 27 bits, at 8 MHz and 16 MHz.
  • the plurality of data frame indication bits have a length of 29 bits.
  • the length of SIG-B is also different in different channels, which are 26, 27, and 29 bits, respectively, and all of them can be used as data frame indication bits.
  • the value of the kth bit is a first value and k is less than or equal to m, indicating that the kth data frame is completely received by the receiver, and/or the value of the kth bit is a second value and k is less than or equal to m, indicating the kth data frame
  • the service processing module 602 is not received by the receiver.
  • the m+1th to nthth data frames are not transmitted.
  • the vacant bits of the data frame indication bit can be uniformly set. Is "1" or "0".
  • the plurality of data frame indication bits are "00011111111111111111111111", wherein the first 12 bits indicate that the number of data frames continuously transmitted by the sender is 12, and the last 14 bits indicate the number of data frames that are not transmitted, where the first The data frame, the second data frame, and the third data frame are not completely received, and the data frame that is not transmitted is indicated by "1".
  • the service processing module 602 also records the number of data frames continuously sent by the sender.
  • the value of the data frame indication bit in the message frame can be confirmed according to the compressed block, and it is determined whether a certain data frame is not completely received, or the sender does not send the corresponding data frame. . For example, if multiple data frame indication bits are "00011111111111111111111111" and its length is 26 bits, then the sender records that 26 data frames have been continuously transmitted.
  • the service module 602 further retransmits, by the wireless transceiver module, a data frame that is not completely received by the receiver.
  • a data frame that is not completely received by the receiver it can be resent once. For example, if multiple data frame indication bits are "00011111111111111111111", where the value of the first three bits is "0", then the sender should resend the first data frame, the second data frame, and the third data frame.
  • FIG. 7 is a flow chart of a data communication method in accordance with one embodiment of the present invention.
  • the present invention further provides a data communication method, including: Step 702: Generate a plurality of data frames, and continuously send the multiple data frames; Step 704: Receive a compressed block acknowledgement message frame, where the compression
  • the block acknowledgment message frame includes a plurality of data frame indication bits, where the length of the plurality of data frame indication bits indicates a maximum number of data frames continuously transmitted by the sender, and the length of the plurality of data frame indication bits is n bits.
  • the compressed block acknowledgment message frame replied by the receiver can be used to determine whether the other party has completely received each data frame, and does not need to receive the existing Block ACK, and does not need to send each data frame. Both receive a confirmation message to ensure that both the sender and the receiver save power. Where n and k are both positive Number.
  • the plurality of data frame indication bits are "00011 11 111 11 111 11 111 11 11 " and the length thereof is 26 bits, indicating that the sender continuously transmits 26 data frames, wherein the values of the first three bits are It is "0", indicating the first data frame, and the second data frame and the third data frame are not completely received by the receiver.
  • the plurality of data frame indication bits include a plurality of bits in a physical frame header of the compressed block acknowledgment message frame.
  • the physical frame header of the message frame can be confirmed by the compressed block to identify.
  • the compressed block acknowledgement message frame only includes
  • LTF long training frame
  • STF short training frame
  • SIG signal
  • the multiple data frame indication bits include a plurality of bits of a signal domain in the physical frame header of the compressed block acknowledgment message frame.
  • the SIG-B part which can serve as the SIG domain can be selected, and those skilled in the art should understand that this is only an example, and other positions may also be used as data frame indication bits.
  • the length of the plurality of data frame indication bits is 26 bits, and in the 4 MHz channel, the length of the plurality of data frame indication bits is 27 bits, at 8 MHz and 16 MHz.
  • the plurality of data frame indication bits have a length of 29 bits.
  • the length of SIG-B is also different in different channels, which are 26, 27, and 29 bits, respectively, and all of them can be used as data frame indication bits.
  • the value of the kth bit is the first value and k is less than or equal to m. , indicating that the kth data frame is completely received by the receiver, and/or the value of the kth bit is a second value and k is less than or equal to m, indicating that the kth data frame is not
  • the receiving party is completely received, and when the m+1th bit to the nth bit of the plurality of data frame indication bits are the first value or the second value, it indicates that the sender does not send the mth +1 to nth data frames.
  • the vacant bits of the data frame indication bit can be uniformly set to "1" or "0".
  • m is a positive integer.
  • the plurality of data frame indication bits are "00011 11 111 11 111 11 111 11 11 ", wherein the first 12 bits indicate that the number of consecutively transmitted data frames of the sender is 12, and the last 14 bits indicate that it is not The number of data frames sent, where the first data frame, the second data frame, and the third data frame are not completely received, and are not sent.
  • the data frame is indicated by "1".
  • the method further includes: recording the number of data frames continuously sent by the sender.
  • the value of the data frame indication bit in the message frame can be confirmed according to the compressed block, and it is determined whether a certain data frame is not completely received, or the sender does not send the corresponding data frame. . For example, if multiple data frame indication bits are
  • the method further includes: resending a data frame that is not completely received by the receiver.
  • a data frame that is not completely received by the receiver it can be resent once. For example, if multiple data frames indicate that the sender should resend the first data frame, the second data frame, and the third data frame.
  • Figure 8 is a flow chart showing the operation of a data communication device in accordance with one embodiment of the present invention.
  • the physical frame header SIG (signal) field is divided into two parts, namely SIG-A and SIG-B, wherein the specific structure of SIG-A is as shown in the table in the background art.
  • SIG-B varies from channel to channel, 26 bits in 2MHz channel, 27 bits in 4MHz channel, and 29 bits in 8MHz and 16MHz channels.
  • the number of data frames is selected by using these bits, as follows:
  • a new Block ACK mechanism which can be called a compressed block acknowledgment mechanism, considers that APs have wide coverage and low data transmission rate in l lah, so it is impossible for an AP to continuously send data continuously with a STA for a certain period of time. Frame, so the number of consecutive transmit data frames with the largest number of SIG-B bits in the physical frame header is used.
  • the number of consecutively transmitted data frames allowed by the receiver and the sender is 26. If a data frame is not completely received during transmission, it can be marked with "0" and used for complete reception. "Mark, for example: If the value of the SIG-B field is specifically "01111111111111111111110", it means that the first data frame and the 26th data frame are not completely received during transmission, and the sender needs to retransmit; if the data frame is sent No
  • the sender and the receiver each note the number of transmitted data frames, and the remaining part uses the "1" table For example, if a total of 11 packets are transmitted, if the SIG-B field is "01011111111111111111111", indicating that an error occurred during the transmission of the first packet and the third data frame, the indication bits of the 15 untransmitted data frames are indicated. Also indicated by "1".
  • the number of consecutively transmitted data frames allowed by the receiver and the sender is 27.
  • the number of consecutive data frames allowed by the receiver and the sender is 29, and the specific operation is the same. Operates in a 2MHz channel.
  • Step 802 assuming that in the 2 MHz channel, the transmitting direction continuously transmits the data frame, and the sender and the receiver respectively record the number of data frames sent;
  • Step 804 After the sender sends enough 26 data frames, or after all the data frames are sent, the receiver generates a compressed block acknowledgement message frame (which may be a Short ACK) and returns it to the sender.
  • a compressed block acknowledgement message frame (which may be a Short ACK)
  • Step 806 the sender parses the SIG part in the compressed block acknowledgement message frame, and obtains the value therein;
  • Step 808 For the nth bit, if the value is "0", it indicates that the nth data frame sent by the sender is not completely received, and the data frame needs to be resent;
  • Step 810 if the value of the nth bit is "1”, further determine whether the continuous transmission is equal to 26 data frames;
  • Step 812 if the continuous transmission is equal to 26 data frames, it indicates that the nth data frame has been completely received;
  • step 814 if less than 26 data frames are continuously transmitted, the value of the bit is ignored.
  • the above sender and receiver may be STAs and APs located in the WLAN, or may perform data interaction between the two terminals.
  • the technical solution of the present invention is illustrated by taking only a 2 MHz channel as an example, those skilled in the art should connect, and the technical solution of the present invention is still applicable in other channels.
  • the data communication device and the data communication method are implemented by the technical solution of the present invention, and the problem that the short acknowledgement frame in the existing l lah does not solve the block acknowledgement mechanism is solved, which is beneficial to the STA and the AP to further save power.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

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Description

说 明 书
数据通信装置和数据通信方法
技术领域
本发明涉及通信技术领域, 具体而言, 涉及数据通信装置和数据通信 方法。 背景技术
在 IEEE (美国电气和电子工程师协会) 802.11 中, 发送方发送数据 帧给接收方, 在帧头 FC ( frame control, 帧控制域) 的 QoS (服务质量) 域中的 ACK policy (确认策略) 子域中, 用 "0" 或 " 1 " 来标识是否需要 接收方回复 ACK (确认) 消息, 一般来说, 这个子域是置为 " 的, 表 示接收方回复 ACK给发送方, 确认数据帧被完整的接收。 现有标准下, ACK的完整帧结构如图 1所示。
为了减少 ACK 回复的次数, 也就是说发送方发送一次数据帧, 接收 方不用回复一次 ACK 帧, 发送方可以发送多次数据帧后, 接收方回复一 次 ACK帧, 这就是 802.11定义的 Block ACK ( Block Acknowledgment, 块确认)机制, 其 MAC (媒介访问控制 ) 帧部分定义格式如图 2所示。
:¾口图 2所示, Block ACK starting sequence control (块确认开始序列控 制) 表示数据帧开始传输的序列号, Block Ack Bitmap (块确认位图) 是 一个 128 字节长度的向量, 由 "0" 、 " 1" 组成, 如果在 Bitmap 中的 n 设置为 "0" , 表示从开始序列开始加上 n 的这个数据帧没有被接收方收 到, 设置为 " 1 " 表示从开始序列开始加上 n 的这个数据帧被接收方收 到。
在 802.11新成立的工作组 l lah中, 为了让 AP ( Access Point, 接入 点) 与 STA ( Station, 终端 /站点) 更进一步省电, 定义了新的 ACK格 式, 称为 Short ACK (短确认) 帧, 即用 Short ACK中物理帧头中的 SIG (信号 ) 域来替代现有 ACK中 MAC帧的作用, 具体格式如图 3所示。 Short ACK的 SIG域格式如下表所示:
Figure imgf000004_0001
在这个表中, MCS、 Ack Indication, CRC 和 Tail的结构是已经被确 定下来的, 其余部分则是被重新定义的其它的一些域。
虽然在 l lah中提出了短 ACK的方案, 便于 STA与 AP省电, 但是并 没有如何使用短 ACK来实现 Block ACK块确认帧做出定义, 如果 STA与 AP要基于使用短 ACK帧使用块确认帧机制, 仅根据上述表格的定义是无 法实现的。 因此, 需要一种新的技术方案, 可以使得无线网络中的接入点或终端 在接收到发送方连续发送的数据帧后, 利用压缩块确认消息帧作为返回给 发送方的确认消息, 通知发送方是否已完整接收其连续发送的数据帧, 有 利于保证收发双方节省电量。 发明内容
本发明所要解决的技术问题在于, 提供一种新的技术方案, 可以使得 无线网络中的接入点或终端在接收到发送方连续发送的数据帧后, 利用压 缩块确认消息帧作为返回给发送方的确认消息, 通知发送方是否已完整接 收其连续发送的数据帧, 有利于保证收发双方节省电量。
有鉴于此, 本发明提供一种数据通信装置, 包括: 业务处理模块, 通 过无线收发模块连续接收多个数据帧, 生成压缩块确认消息帧, 所述压缩 块确认消息帧中包含多个数据帧指示位, 所述多个数据帧指示位的长度表 示发送方连续发送的数据帧的最大数量, 所述多个数据帧指示位的长度为 n 比特位, 如果所述发送方连续发送的数据帧的数量为 n, 所述多个数据 帧指示位中的第 k比特位的值为第一值时, 表示所述发送方发送的第 k个 数据帧被所述业务处理模块完整接收, 和 /或所述第 k 比特位的值为第二 值时, 表示所述第 k个数据帧没有被所述业务处理模块完整接收, 通过所 述无线收发模块发送所述压缩块确认消息帧; 所述无线收发模块, 用于与 所述数据通信装置外部交互数据。 在该技术方案中, 数据通信装置可以是 路由器、 手机、 平板电脑、 笔记本电脑等设备, 业务处理模块相当于处理 无线局域网业务的芯片, 无线收发模块相当于收发无线局域网信号的天 线, 可作为 STA或 AP, 在接收到发送方连续发出的数据帧后, 可以通过 压缩块确认消息帧来通知对方是否已将每个数据帧都完整接收, 不需使用 现有的 Block ACK, 也不需要接收到每个数据帧后都进行回复, 可保证收 发双方都节省电量。 其中, n和 k都为正整数。 例如, 所述多个数据帧指 示位为 "00011111111111111111111111 " , 其长度为 26 比特位, 表示接 收方连续接收了 26个数据帧, 其中前三个比特位的值为 "0" , 表示第一 个数据帧, 第二个数据帧和第三个数据帧没有被接收方完整接收。 在上述技术方案中, 优选地, 所述多个数据帧指示位包括所述压缩块 确认消息帧的物理帧头中的多个位。 在该技术方案中, 可以利用压缩块确 认消息帧的物理帧头来进行标识。 在该技术方案中, 压缩块确认消息帧只 包括 LTF(long training frame) , STF(short training frame)以及 SIG(signal)邢 分。
在上述技术方案中, 优选地, 所述多个数据帧指示位包括所述压缩块 确认消息帧的所述物理帧头中信号域的多个位。 在该技术方案中, 具体 地, 可以选用可起到标识作用的是 SIG域中的 SIG-B部分, 本领域技术人 员应当理解, 此处仅为示例, 其它位置同样可能作为数据帧指示位。
在上述技术方案中, 优选地, 在 2MHz信道中, 所述多个数据帧指示 位的长度为 26 比特位, 在 4MHz信道中, 所述多个数据帧指示位的长度 为 27比特位, 在 8MHz和 16MHz信道中, 所述多个数据帧指示位的长度 为 29 比特位。 在该技术方案中, 在不同的信道中, SIG-B 的长度也有所 不同, 分别为 26、 27、 29比特位, 可将全部作为数据帧指示位。
在上述技术方案中, 优选地, 如果所述发送方连续发送的数据帧的数 量为 m, 且所述 m小于所述 n, 则所述第 k比特位的值为第一值且 k小于 或等于 m时, 表示所述第 k个数据帧被所述业务处理模块完整接收, 和 / 或所述第 k比特位的值为第二值且 k小于或等于 m时, 表示所述第 k个 数据帧没有被所述业务处理模块完整接收, 所述多个数据帧指示位的第 m+1比特位至第 n比特位为所述第一值或所述第二值时, 表示所述发送方 未发送第 m+1 个至第 n 个数据帧。 在该技术方案中, 如果发送方未发送 与数据帧标识位数量相同的数据帧, 则数据帧指示位的空余位可以统一置 为 " 1 " 或 "0" 。 其中, m 为正整数。 例如, 所述多个数据帧指示位为 "00011 11 111 11 111 11 111 11 111 1 " , 其中前 12 比特位表示发送方连续发 送的数据帧的数量为 12 , 后 14 比特位表示是没有被发送的数据帧数量, 其中第一数据帧, 第二数据帧以及第三数据帧没有被完整接收, 没被发送 的数据帧用 " 1 " 来指示。
在上述技术方案中, 优选地, 所述业务处理模块还记录所述发送方连 续发送的数据帧的个数。 在该技术方案中, 通过记录发送方连续发送的数 据帧个数, 接收方可以通过数据帧指示位的值, 指示某数据帧未完整接 收, 还是发送方未发送相应数据帧。 例如, 如果多个数据帧指示位为
"00011 11 111 11 111 11 111 11 11 11 " , 其长度为 26 比特位, 那么接收方就 记录下发送方连续发送了 26个数据帧。
在上述技术方案中, 优选地, 所述业务接收模块还通过所述无线收发 模块重新接收未完整接收的数据帧。 在该技术方案中, 如果存在数据帧未 被完整接收, 则可以重新接收一次。 例如, 如果多个数据帧指示位为 么接收方应该重新接收第一数据帧, 第二数据帧以及第三数据帧。
本发明还提供一种数据通信方法, 包括: 连续接收多个数据帧; 生成 压缩块确认消息帧, 所述压缩块确认消息帧中包含多个数据帧指示位, 所 述多个数据帧指示位的长度表示发送方连续发送的数据帧的最大数量, 所 述多个数据帧指示位的长度为 n比特位, 如果所述发送方连续发送的数据 帧的数量为 n, 所述多个数据帧指示位中的第 k比特位的值为第一值时, 表示所述发送方发送的第 k 个数据帧被接收方完整接收, 和 /或所述第 k 比特位的值为第二值时, 表示所述第 k个数据帧没有被所述接收方完整接 收; 发送所述压缩块确认消息帧。 在该技术方案中, 在接收到发送方连续 发出的数据帧后, 可以通过压缩块确认消息帧来通知对方是否已将每个数 据帧都完整接收, 不需使用现有的 Block ACK, 也不需要接收到每个数据 帧后都进行回复, 可保证收发双方都节省电量。 其中, n 和 k 都是正整 数。 例如, 所述多个数据帧指示位为 "00011 11 111 11 111 11 111 11 11 11 " , 其长度为 26比特位, 表示接收方连续接收了 26个数据帧, 其中前三个比 特位的值为 "0" , 表示第一个数据帧, 第二个数据帧和第三个数据帧没 有被接收方完整接收。
在上述技术方案中, 优选地, 所述多个数据帧指示位包括所述压缩块 确认消息帧的物理帧头中的多个位。 在该技术方案中, 可以利用压缩块确 认消息帧的物理帧头来进行标识。 在该技术方案中, 压缩块确认消息帧只 包括 LTF(long training frame) , STF(short training frame)以及 SIG(signal)邢 在上述技术方案中, 优选地, 所述多个数据帧指示位包括所述压缩块 确认消息帧的所述物理帧头中信号域的多个位。 在该技术方案中, 具体 地, 可以选用可起到标识作用是 SIG域中的 SIG-B部分, 本领域技术人员 应当理解, 此处仅为示例, 其它位置同样可能作为数据帧指示位。
在上述技术方案中, 优选地, 在 2MHz信道中, 所述多个数据帧指示 位的长度为 26 比特位, 在 4MHz信道中, 所述多个数据帧指示位的长度 为 27比特位, 在 8MHz和 16MHz信道中, 所述多个数据帧指示位的长度 为 29 比特位。 在该技术方案中, 在不同的信道中, SIG-B 的长度也有所 不同, 分别为 26、 27、 29比特位, 可将全部作为数据帧指示位。
在上述技术方案中, 优选地, 如果所述发送方连续发送的数据帧的数 量为 m , 且所述 m小于所述 n , 则所述第 k比特位的值为第一值且 k小于 或等于 m时, 表示所述第 k个数据帧被所述接收方完整接收, 和 /或所述 第 k比特位的值为第二值且 k小于或等于 m时, 表示所述第 k个数据帧 没有被所述接收方完整接收, 所述多个数据帧指示位的第 m+1 比特位至 第 n比特位为所述第一值或所述第二值时, 表示所述发送方未发送第 m+1 个至第 n个数据帧。 在该技术方案中, 如果发送方未发送与数据帧标识位 数量相同的数据帧, 则数据帧指示位的空余位可以统一置为 " 1 " 或 " 0 " 。 其中, m 为正整数。 例如, 所述多个数据帧指示位为 "00011111111111111111111111 " , 其中前 12 比特位表示发送方连续发 送的数据帧的数量为 12, 后 14 比特位表示是没有被发送的数据帧数量, 其中第一数据帧, 第二数据帧以及第三数据帧没有被完整接收, 没被发送 的数据帧用 " 1 " 来指示。
在上述技术方案中, 优选地, 还包括: 记录所述发送方连续发送的数 据帧的个数。 在该技术方案中, 通过记录发送方连续发送的数据帧个数, 接收方可以通过数据帧指示位的值, 指示某数据帧未完整接收, 还是发送 方 未发送相应数据 帧 。 例 如 , 如果多 个数据帧 指 示位为
"00011111111111111111111111 " , 其长度为 26 比特位, 那么接收方就 记录下发送方连续发送了 26个数据帧。
在上述技术方案中, 优选地, 还包括: 重新接收未完整接收的数据 帧。 在该技术方案中, 如果存在数据帧未被完整接收, 则可以重新接收一 次。 例如, 如果多个数据帧指示位为 "00011 11 111 11 111 11 111 11 11 11 " , 其中前三个比特位的值为 "0" , 那么接收方应该重新接收第一数据帧, 第二数据帧以及第三数据帧。
本发明还提供一种数据通信装置, 包括: 业务处理模块, 生成多个数 据帧, 并通过无线收发模块连续发送所述多个数据帧, 以及通过所述无线 收发模块接收压缩块确认消息帧, 所述压缩块确认消息帧中包含多个数据 帧指示位, 所述多个数据帧指示位的长度表示所述业务处理模块连续发送 的数据帧的最大数量, 所述多个数据帧指示位的长度为 n比特位, 如果所 述业务处理模块连续发送的数据帧的数量为 n, 所述多个数据帧指示位中 的第 k比特位的值为第一值时, 表示所述业务处理模块发送的第 k个数据 帧被接收方完整接收, 和 /或所述第 k 比特位的值为第二值时, 表示所述 第 k个数据帧没有被所述接收方完整接收; 所述无线收发模块, 用于与所 述数据通信装置外部交互数据。 该技术方案中, 数据通信装置可以是路由 器、 手机、 平板电脑、 笔记本电脑等设备, 业务处理模块相当于处理无线 局域网业务的芯片, 无线收发模块相当于收发无线局域网信号的天线, 可 作为 STA 发送数据帧, 并可以通过接收方回复的压缩块消息确认帧来判 断通知对方是否已将每个数据帧都完整接收, 不需接收现有的 Block ACK, 也不需在发送每个数据帧后都接收到确认消息, 可保证收发双方都 节省电量。 其中, n 和 k 都是正整数。 例如, 所述多个数据帧指示位为 "00011 11 111 11 111 11 111 11 11 11 " , 其长度为 26 比特位, 表示发送方连 续发送了 26个数据帧, 其中前三个比特位的值为 "0" , 表示第一个数据 帧, 第二个数据帧和第三个数据帧没有被接收方完整接收。
在上述技术方案中, 优选地, 所述多个数据帧指示位包括所述压缩块 确认消息帧的物理帧头中的多个位。 在该技术方案中, 可以利用压缩块确 认消息的物理帧头来进行标识。 在该技术方案中, 压缩块确认消息帧只包 括 LTF(long training frame) , STF(short training frame)以及 SIG(signal)邢 分。
在上述技术方案中, 优选地, 所述多个数据帧指示位包括所述压缩块 确认消息帧的所述物理帧头中信号域的多个位。 在该技术方案中, 具体 地, 可以选用可起到标识作用是 SIG域的 SIG-B部分, 本领域技术人员应 当理解, 此处仅为示例, 其它位置同样可能作为数据帧指示位。
在上述技术方案中, 优选地, 在 2MHz信道中, 所述多个数据帧指示 位的长度为 26 比特位, 在 4MHz信道中, 所述多个数据帧指示位的长度 为 27比特位, 在 8MHz和 16MHz信道中, 所述多个数据帧指示位的长度 为 29 比特位。 在该技术方案中, 在不同的信道中, SIG-B 的长度也有所 不同, 分别为 26、 27、 29比特位, 可将全部作为数据帧指示位。
在上述技术方案中, 优选地, 如果所述业务处理模块连续发送的数据 帧的数量为 m , 且所述 m小于所述 n , 则所述第 k比特位的值为第一值且 k 小于或等于 m 时, 表示所述第 k个数据帧被所述接收方完整接收, 和 / 或所述第 k比特位的值为第二值且 k小于或等于 m时, 表示所述第 k个 数据帧没有被所述接收方完整接收, 所述多个数据帧指示位的第 m+1 比 特位至第 n比特位为所述第一值或所述第二值时, 表示所述业务处理模块 未发送第 m+1 个至第 n 个数据帧。 在该技术方案中, 如果发送方未发送 与数据帧标识位数量相同的数据帧, 则数据帧指示位的空余位可以统一置 为 " 1 " 或 "0" 。 其中, m 为正整数。 例如, 所述多个数据帧指示位为 "00011111111111111111111111 " , 其中前 12 比特位表示发送方连续发 送的数据帧的数量为 12, 后 14 比特位表示是没有被发送的数据帧数量, 其中第一数据帧, 第二数据帧以及第三数据帧没有被完整接收, 没被发送 的数据帧用 " 1 " 来指示。
在上述技术方案中, 优选地, 所述业务处理模块还记录所述发送方连 续发送的数据帧的个数。 在该技术方案中, 通过记录发送方连续发送的数 据帧个数, 可以根据压缩块确认消息帧中数据帧指示位的值, 判断是某数 据帧未完整接收, 还是发送方未发送相应数据帧。 例如, 如果多个数据帧 指示位为 "00011111111111111111111111 " , 其长度为 26 比特位, 那么 发送方就记录下连续发送了 26个数据帧。
在上述技术方案中, 优选地, 所述业务模块还通过所述无线收发模块 重新发送所述接收方没有完整接收的数据帧。 在该技术方案中, 如果存在 数据帧未被接收方完整接收, 则可以重新发送一次。 例如, 如果多个数据 帧指示位为 "00011 111 11 111 11 111 11 111 11 1 " , 其中前三个比特位的值为
"0" , 那么发送方应该重新发送第一数据帧, 第二数据帧以及第三数据 帧。
本发明还提供一种数据通信方法, 包括: 生成多个数据帧, 并连续发 送所述多个数据帧; 接收压缩块确认消息帧, 所述压缩块确认消息帧中包 含多个数据帧指示位, 所述多个数据帧指示位的长度表示发送方连续发送 的数据帧的最大数量, 所述多个数据帧指示位的长度为 n比特位, 如果所 述发送方连续发送的数据帧的数量为 n, 所述多个数据帧指示位的第 k 比 特位的值为第一值时, 表示所述发送方发送的第 k个数据帧被接收方完整 接收, 和 /或所述第 k 比特位的值为第二值时, 表示所述第 k 个数据帧没 有被完整接收。 该技术方案中, 可以通过接收方回复的压缩块确认消息帧 来判断通知对方是否已将每个数据帧都完整接收, 不需接收现有的 Block ACK, 也不需在发送每个数据帧后都接收到确认消息, 可保证收发双方都 节省电量。 其中, n 和 k 都是正整数。 例如, 所述多个数据帧指示位为 "00011 11 111 11 111 11 111 11 11 11 " , 其长度为 26 比特位, 表示发送方连 续发送了 26个数据帧, 其中前三个比特位的值为 "0" , 表示第一个数据 帧, 第二个数据帧和第三个数据帧没有被接收方完整接收。
在上述技术方案中, 优选地, 所述多个数据帧指示位包括所述压缩块 确认消息帧的物理帧头中的多个位。 在该技术方案中, 可以利用压缩块确 认消息帧的物理帧头来进行标识。 在该技术方案中, 压缩块确认消息帧只 包括 LTF(long training frame) , STF(short training frame)以及 SIG(signal)邢 分。
在上述技术方案中, 优选地, 所述多个数据帧指示位包括所述压缩块 确认消息帧的所述物理帧头中信号域的多个位。 在该技术方案中, 具体 地, 可以选用可起到标识作用是 SIG域的 SIG-B部分, 本领域技术人员应 当理解, 此处仅为示例, 其它位置同样可能作为数据帧指示位。
在上述技术方案中, 优选地, 在 2MHz信道中, 所述多个数据帧指示 位的长度为 26 比特位, 在 4MHz信道中, 所述多个数据帧指示位的长度 为 27比特位, 在 8MHz和 16MHz信道中, 所述多个数据帧指示位的长度 为 29 比特位。 在该技术方案中, 在不同的信道中, SIG-B 的长度也有所 不同, 分别为 26、 27、 29比特位, 可将全部作为数据帧指示位。
在上述技术方案中, 优选地, 如果所述发送方连续发送的数据帧的数 量为 m, 且所述 m小于所述 n, 则所述第 k比特位的值为第一值且 k小于 或等于 m时, 表示所述第 k个数据帧被所述接收方完整接收, 和 /或所述 第 k比特位的值为第二值且 k小于或等于 m时, 表示所述第 k个数据帧 没有被所述接收方完整接收, 所述多个数据帧指示位的第 m+1 比特位至 第 n比特位为所述第一值或所述第二值时, 表示所述发送方未发送第 m+1 个至第 n个数据帧。 在该技术方案中, 如果发送方未发送与数据帧标识位 数量相同的数据帧, 则数据帧指示位的空余位可以统一置为 "1" 或 "0" 。 其中, m 为正整数。 例如, 所述多个数据帧指示位为 "00011111111111111111111111" , 其中前 12 比特位表示发送方连续发 送的数据帧的数量为 12, 后 14 比特位表示是没有被发送的数据帧数量, 其中第一数据帧, 第二数据帧以及第三数据帧没有被完整接收, 没被发送 的数据帧用 "1" 来指示。
在上述技术方案中, 优选地, 还包括: 记录所述发送方连续发送的数 据帧的个数。 在该技术方案中, 通过记录发送方连续发送的数据帧个数, 可以根据压缩块确认;肖息帧中数据帧指示位的值, 判断是某数据帧未完整 接收, 还是发送方未发送相应数据帧。 例如, 如果多个数据帧指示位为
"00011111111111111111111111", 其长度为 26 比特位, 那么发送方就记 录下连续发送了 26个数据帧。
在上述技术方案中, 优选地, 还包括: 重新发送所述接收方没有完整 接收的数据帧。 在该技术方案中, 如果存在数据帧未被接收方完整接收, 则 可以 重新发送一次 。 例 如 , 如果多 个数据帧 指 示位为
"00011111111111111111111111", 其中前三个比特位的值为 "0" , 那么 发送方应该重新发送第一数据帧, 第二数据帧以及第三数据帧。
通过以上技术方案, 可以实现数据通信装置和数据通信方法, 可以使 得无线网络中的接入点或终端在接收到发送方连续发送的数据帧后, 利用 压缩块确认帧作为返回给发送方的确认消息, 通知发送方是否已完整 其连续发送的数据帧, 有利于保证收发双方节省电量。 附图说明
图 1是现有技术方案中的确认消息帧的结构示意图;
图 2是现有技术方案中的块确认消息帧的结构示意图;
图 3是现有技术方案中的确认消息帧和压缩块确认消息帧的对比示意 图 4是根据本发明的一个实施例的数据通信装置的框图;
图 5是根据本发明的一个实施例的数据通信方法的流程图;
图 6是根据本发明的一个实施例的数据通信装置的框图;
图 7是根据本发明的一个实施例的数据通信方法的流程图;
图 8是根据本发明的一个实施例的数据通知装置的工作流程图。 具体实施方式
为了能够更清楚地理解本发明的上述目的、 特征和优点, 下面结合附 图和具体实施方式对本发明进行进一步的详细描述。 需要说明的是, 在不 沖突的情况下, 本申请的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本发明, 但是, 本发明还可以采用其他不同于在此描述的其他方式来实施, 因此, 本发明 的保护范围并不受下面公开的具体实施例的限制。
图 4是根据本发明的一个实施例的数据通信装置的框图。
如图 4所示, 本发明提供一种数据通信装置 400, 包括: 业务处理模 块 402 , 通过无线收发模块 404连续接收多个数据帧, 生成压缩块确认消 息帧, 所述压缩块确认消息帧中包含多个数据帧指示位, 所述多个数据帧 指示位的长度表示发送方连续发送的数据帧的最大数量, 所述多个数据帧 指示位的长度为 n 比特位, 如果所述发送方连续发送的数据帧的数量为 n, 所述多个数据帧指示位中的第 k 比特位的值为第一值时, 表示所述发 送方发送的第 k 个数据帧被所述业务处理模块 402 完整接收, 和 /或所述 第 k比特位的值为第二值时, 表示所述第 k个数据帧没有被所述业务处理 模块 402完整接收, 通过所述无线收发模块 404发送所述压缩块确认消息 帧; 所述无线收发模块 404, 用于与所述数据通信装置 400 外部交互数 据。 在该技术方案中, 数据通信装置 400 可以是路由器、 手机、 平板电 脑、 笔记本电脑等设备, 业务处理模块 402相当于处理无线局域网业务的 芯片, 无线收发模块 404相当于收发无线局域网信号的天线, 可作为 STA 或 AP , 在接收到发送方连续发出的数据帧后, 可以通过压缩块确认消息 帧来通知对方是否已将每个数据帧都完整接收, 不需使用现有的 Block ACK, 也不需要接收到每个数据帧后都进行回复, 可保证收发双方都节省 电量。 其中, n 和 k 都为正整数。 例如, 所述多个数据帧指示位为 "00011111111111111111111111 " , 其长度为 26 比特位, 表示接收方连 续接收了 26个数据帧, 其中前三个比特位的值为 "0" , 表示第一个数据 帧, 第二个数据帧和第三个数据帧没有被接收方完整接收。
在上述技术方案中, 所述多个数据帧指示位包括所述压缩块确认消息 帧的物理帧头中的多个位。 在该技术方案中, 可以利用压缩块确认消息的 物理帧头来进行标识。 在该技术方案中, 压缩块确认消息帧只包括 LTF(long training frame) , STF(short training frame)以及 SIG(signal)邢分。
在上述技术方案中, 所述多个数据帧指示位包括所述压缩块确认消息 帧的所述物理帧头中信号域的多个位。 在该技术方案中, 具体地, 可以选 用可起到标识作用的是 SIG域的 SIG-B部分, 本领域技术人员应当理解, 此处仅为示例, 其它位置同样可能作为数据帧指示位。
在上述技术方案中, 在 2MHz信道中, 所述多个数据帧指示位的长度 为 26比特位, 在 4MHz信道中, 所述多个数据帧指示位的长度为 27比特 位, 在 8MHz和 16MHz信道中, 所述多个数据帧指示位的长度为 29比特 位。 在该技术方案中, 在不同的信道中, SIG-B 的长度也有所不同, 分别 为 26、 27、 29比特位, 可将全部作为数据帧指示位。
在上述技术方案中, 如果所述发送方连续发送的数据帧的数量为 m, 且所述 m小于所述 n, 则所述第 k比特位的值为第一值且 k小于或等于 m 时, 表示所述第 k 个数据帧被所述业务处理模块 402 完整接收, 和 /或所 述第 k比特位的值为第二值且 k小于或等于 m时, 表示所述第 k个数据 帧没有被所述业务处理模块 402 完整接收, 所述多个数据帧指示位的第 m+1比特位至第 n比特位为所述第一值或所述第二值时, 表示所述发送方 未发送第 m+1 个至第 n 个数据帧。 在该技术方案中, 如果发送方未发送 与数据帧标识位数量相同的数据帧, 则数据帧指示位的空余位可以统一置 为 "1" 或 "0" 。 其中, m 为正整数。 例如, 所述多个数据帧指示位为 "00011111111111111111111111" , 其中前 12 比特位表示发送方连续发 送的数据帧的数量为 12, 后 14 比特位表示是没有被发送的数据帧数量, 其中第一数据帧, 第二数据帧以及第三数据帧没有被完整接收, 没被发送 的数据帧用 "1" 来指示。
在上述技术方案中, 所述业务处理模块 402还记录所述发送方连续发 送的数据帧的个数。 在该技术方案中, 通过记录发送方连续发送的数据帧 个数, 接收方可以通过数据帧指示位的值, 指示某数据帧未完整接收, 还 是发送方未发送相应数据帧。 例如, 如果多个数据帧指示位为 "00011111111111111111111111" , 其长度为 26 比特位, 那么接收方就 记录下发送方连续发送了 26个数据帧。
在上述技术方案中, 所述业务接收模块 402还通过所述无线收发模块 重新接收未完整接收的数据帧。 在该技术方案中, 如果存在数据帧未被完 整接收, 则可以重新接收一次。 例如, 如果多个数据帧指示位为 "00011111111111111111111111" , 其中前三个比特位的值为 "0" , 那 么接收方应该重新接收第一数据帧, 第二数据帧以及第三数据帧。
图 5是根据本发明的一个实施例的数据通信方法的流程图。
如图 5 所示, 本发明还提供一种数据通信方法, 包括: 步骤 502, 连 续接收多个数据帧; 步骤 504, 生成压缩块确认消息帧, 所述压缩块确认 消息帧中包含多个数据帧指示位, 所述多个数据帧指示位的长度表示发送 方连续发送的数据帧的最大数量, 所述多个数据帧指示位的长度为 n比特 位, 如果所述发送方连续发送的数据帧的数量为 n, 所述多个数据帧指示 位中的第 k比特位的值为第一值时, 表示所述发送方发送的第 k个数据帧 被接收方完整接收, 和 /或所述第 k比特位的值为第二值时, 表示所述第 k 个数据帧没有被所述接收方完整接收; 步骤 506 , 发送所述压缩块确认消 息帧。 在该技术方案中, 在接收到发送方连续发出的数据帧后, 可以通过 压缩块确认消息帧来通知对方是否已将每个数据帧都完整接收, 不需使用 现有的 Block ACK, 也不需要接收到每个数据帧后都进行回复, 可保证收 发双方都节省电量。 其中, n和 k都是正整数。 例如, 所述多个数据帧指 示位为 "00011 111 11 111 11 111 11 111 11 1 " , 其长度为 26 比特位, 表示接 收方连续接收了 26个数据帧, 其中前三个比特位的值为 "0" , 表示第一 个数据帧, 第二个数据帧和第三个数据帧没有被接收方完整接收。
在上述技术方案中, 所述多个数据帧指示位包括所述压缩块确认消息 帧的物理帧头中的多个位。 在该技术方案中, 可以利用压缩块确认消息的 物理帧头来进行标识。 在该技术方案中, 压缩块确认消息帧只包括 LTF(long training frame) , STF(short training frame)以及 SIG(signal)邢分。
在上述技术方案中, 所述多个数据帧指示位包括所述压缩块确认消息 帧的所述物理帧头中信号域的多个位。 在该技术方案中, 具体地, 可以选 用可起到标识作用是 SIG域中的 SIG-B部分, 本领域技术人员应当理解, 此处仅为示例, 其它位置同样可能作为数据帧指示位。
在上述技术方案中, 在 2MHz信道中, 所述多个数据帧指示位的长度 为 26比特位, 在 4MHz信道中, 所述多个数据帧指示位的长度为 27比特 位, 在 8MHz和 16MHz信道中, 所述多个数据帧指示位的长度为 29比特 位。 在该技术方案中, 在不同的信道中, SIG-B 的长度也有所不同, 分别 为 26、 27、 29比特位, 可将全部作为数据帧指示位。
在上述技术方案中, 如果所述发送方连续发送的数据帧的数量为 m, 且所述 m小于所述 n, 则所述第 k比特位的值为第一值且 k小于或等于 m 时, 表示所述第 k 个数据帧被所述接收方完整接收, 和 /或所述第 k 比特 位的值为第二值且 k小于或等于 m时, 表示所述第 k个数据帧没有被所 述接收方完整接收, 所述多个数据帧指示位的第 m+1 比特位至第 n 比特 位为所述第一值或所述第二值时, 表示所述发送方未发送第 m+1个至第 n 个数据帧。 在该技术方案中, 如果发送方未发送与数据帧标识位数量相同 的数据帧, 则数据帧指示位的空余位可以统一置为 " 1 " 或 "0" 。 其中, m 为 正 整 数 。 例 如 , 所 述 多 个 数 据 帧 指 示 位 为 "00011111111111111111111111" , 其中前 12 比特位表示发送方连续发 送的数据帧的数量为 12, 后 14 比特位表示是没有被发送的数据帧数量, 其中第一数据帧, 第二数据帧以及第三数据帧没有被完整接收, 没被发送 的数据帧用 "1" 来指示。
在上述技术方案中, 还包括: 记录所述发送方连续发送的数据帧的个 数。 在该技术方案中, 通过记录发送方连续发送的数据帧个数, 接收方可 以通过数据帧指示位的值, 指示某数据帧未完整接收, 还是发送方未发送 相 应 数 据 帧 。 例 如 , 如 果 多 个 数 据 帧 指 示 位 为 "00011111111111111111111111" , 其长度为 26 比特位, 那么接收方就 记录下发送方连续发送了 26个数据帧。
在上述技术方案中, 还包括: 重新接收未完整接收的数据帧。 在该技 术方案中, 如果存在数据帧未被完整接收, 则可以重新接收一次。 例如, 如果多个数据帧指示位为 "00011111111111111111111111" , 其中, 前三 个比特位的值为 "0" , 那么接收方应该重新接收第一数据帧, 第二数据 帧以及第三数据帧。
图 6是根据本发明的一个实施例的数据通信装置的框图。
如图 6所示, 本发明还提供一种数据通信装置 600, 包括: 业务处理 模块 602, 生成多个数据帧, 并通过无线收发模块 604连续发送所述多个 数据帧, 以及通过所述无线收发模块 604接收压缩块确认消息帧, 所述压 缩块确认消息帧中包含多个数据帧指示位, 所述多个数据帧指示位的长度 表示所述业务处理模块 602连续发送的数据帧的最大数量, 所述多个数据 帧指示位的长度为 n比特位, 如果所述业务处理模块 602连续发送的数据 帧的数量为 n, 所述多个数据帧指示位中的第 k比特位的值为第一值时, 表示所述业务处理模块 602 发送的第 k 个数据帧被接收方完整接收, 和 / 或所述第 k比特位的值为第二值时, 表示所述第 k个数据帧没有被所述接 收方完整接收; 所述无线收发模块 604, 用于与所述数据通信装置 600外 部交互数据。 该技术方案中, 数据通信装置 600可以是路由器、 手机、 平 板电脑、 笔记本电脑等设备, 业务处理模块 602相当于处理无线局域网业 务的芯片, 无线收发模块 604相当于收发无线局域网信号的天线, 可作为 STA发送数据帧, 并可以通过接收方回复的压缩块确认消息帧来判断通知 对方是否已将每个数据帧都完整接收, 不需接收现有的 Block ACK, 也不 需在发送每个数据帧后都接收到确认消息, 可保证收发双方都节省电量。 其中, n 和 k 都是正整数。 例如, 所述多个数据帧指示位为 "00011 11 111 11 111 11 111 11 11 11 " , 其长度为 26 比特位, 表示发送方连 续发送了 26个数据帧, 其中前三个比特位的值为 "0" , 表示第一个数据 帧, 第二个数据帧和第三个数据帧没有被接收方完整接收。
在上述技术方案中, 所述多个数据帧指示位包括所述压缩块确认消息 帧的物理帧头中的多个位。 在该技术方案中, 可以利用压缩块确认消息帧 的物理帧头来进行标识。 在该技术方案中, 压缩块确认消息帧只包括 LTF(long training frame) , STF(short training frame)以及 SIG(signal)邢分。
在上述技术方案中, 所述多个数据帧指示位包括所述压缩块确认消息 帧的所述物理帧头中信号域的多个位。 在该技术方案中, 具体地, 可以选 用可起到标识作用是 SIG域的 SIG-B部分, 本领域技术人员应当理解, 此 处仅为示例, 其它位置同样可能作为数据帧指示位。
在上述技术方案中, 在 2MHz信道中, 所述多个数据帧指示位的长度 为 26比特位, 在 4MHz信道中, 所述多个数据帧指示位的长度为 27比特 位, 在 8MHz和 16MHz信道中, 所述多个数据帧指示位的长度为 29比特 位。 在该技术方案中, 在不同的信道中, SIG-B 的长度也有所不同, 分别 为 26、 27、 29比特位, 可将全部作为数据帧指示位。
在上述技术方案中, 如果所述业务处理模块 602连续发送的数据帧的 数量为 m, 且所述 m小于所述 n, 则所述第 k比特位的值为第一值且 k小 于或等于 m时, 表示所述第 k个数据帧被所述接收方完整接收, 和 /或所 述第 k比特位的值为第二值且 k小于或等于 m时, 表示所述第 k个数据 帧没有被所述接收方完整接收, 所述多个数据帧指示位的第 m+1 比特位 至第 n比特位为所述第一值或所述第二值时, 表示所述业务处理模块 602 未发送第 m+1 个至第 n 个数据帧。 在该技术方案中, 如果发送方未发送 与数据帧标识位数量相同的数据帧, 则数据帧指示位的空余位可以统一置 为 " 1 " 或 " 0 " 。 例 如 , 所 述 多 个 数据 帧 指 示 位 为 "00011111111111111111111111" , 其中前 12 比特位表示发送方连续发 送的数据帧的数量为 12, 后 14 比特位表示是没有被发送的数据帧数量, 其中第一数据帧, 第二数据帧以及第三数据帧没有被完整接收, 没被发送 的数据帧用 "1" 来指示。
在上述技术方案中, 所述业务处理模块 602还记录所述发送方连续发 送的数据帧的个数。 在该技术方案中, 通过记录发送方连续发送的数据帧 个数, 可以根据压缩块确认消息帧中数据帧指示位的值, 判断是某数据帧 未完整接收, 还是发送方未发送相应数据帧。 例如, 如果多个数据帧指示 位为 "00011111111111111111111111" , 其长度为 26 比特位, 那么发送 方就记录下连续发送了 26个数据帧。
在上述技术方案中, 所述业务模块 602还通过所述无线收发模块重新 发送所述接收方没有完整接收的数据帧。 在该技术方案中, 如果存在数据 帧未被接收方完整接收, 则可以重新发送一次。 例如, 如果多个数据帧指 示位为 "00011111111111111111111111" , 其中, 前三个比特位的值为 "0" , 那么发送方应该重新发送第一数据帧, 第二数据帧以及第三数据 帧。
图 7是根据本发明的一个实施例的数据通信方法的流程图。
如图 7所示, 本发明还提供一种数据通信方法, 包括: 步骤 702, 生 成多个数据帧, 并连续发送所述多个数据帧; 步骤 704, 接收压缩块确认 消息帧, 所述压缩块确认消息帧中包含多个数据帧指示位, 所述多个数据 帧指示位的长度表示发送方连续发送的数据帧的最大数量, 所述多个数据 帧指示位的长度为 n比特位, 如果所述发送方连续发送的数据帧的数量为 n, 所述多个数据帧指示位的第 k 比特位的值为第一值时, 表示所述发送 方发送的第 k 个数据帧被接收方完整接收, 和 /或所述第 k 比特位的值为 第二值时, 表示所述第 k个数据帧没有被完整接收。 该技术方案中, 可以 通过接收方回复的压缩块确认消息帧来判断通知对方是否已将每个数据帧 都完整接收, 不需接收现有的 Block ACK, 也不需在发送每个数据帧后都 接收到确认消息, 可保证收发双方都节省电量。 其中, n 和 k 都是正整 数。 例如, 所述多个数据帧指示位为 "00011 11 111 11 111 11 111 11 11 11 " , 其长度为 26比特位, 表示发送方连续发送了 26个数据帧, 其中前三个比 特位的值为 "0" , 表示第一个数据帧, 第二个数据帧和第三个数据帧没 有被接收方完整接收。
在上述技术方案中, 所述多个数据帧指示位包括所述压缩块确认消息 帧的物理帧头中的多个位。 在该技术方案中, 可以利用压缩块确认消息帧 的物理帧头来进行标识。 在该技术方案中, 压缩块确认消息帧只包括
LTF(long training frame) , STF(short training frame)以及 SIG(signal)邢分。
在上述技术方案中, 所述多个数据帧指示位包括所述压缩块确认消息 帧的所述物理帧头中信号域的多个位。 在该技术方案中, 具体地, 可以选 用可起到标识作用是 SIG域的 SIG-B部分, 本领域技术人员应当理解, 此 处仅为示例, 其它位置同样可能作为数据帧指示位。
在上述技术方案中, 在 2MHz信道中, 所述多个数据帧指示位的长度 为 26比特位, 在 4MHz信道中, 所述多个数据帧指示位的长度为 27比特 位, 在 8MHz和 16MHz信道中, 所述多个数据帧指示位的长度为 29比特 位。 在该技术方案中, 在不同的信道中, SIG-B 的长度也有所不同, 分别 为 26、 27、 29比特位, 可将全部作为数据帧指示位。
在上述技术方案中, 如果所述发送方连续发送的数据帧的数量为 m, 且所述 m小于所述 n, 则所述第 k比特位的值为第一值且 k小于或等于 m 时, 表示所述第 k 个数据帧被所述接收方完整接收, 和 /或所述第 k 比特 位的值为第二值且 k小于或等于 m时, 表示所述第 k个数据帧没有被所 述接收方完整接收, 所述多个数据帧指示位的第 m+1 比特位至第 n 比特 位为所述第一值或所述第二值时, 表示所述发送方未发送第 m+1个至第 n 个数据帧。 在该技术方案中, 如果发送方未发送与数据帧标识位数量相同 的数据帧, 则数据帧指示位的空余位可以统一置为 " 1 " 或 "0" 。 其中, m 为 正 整 数 。 例 如 , 所 述 多 个 数 据 帧 指 示 位 为 "00011 11 111 11 111 11 111 11 11 11 " , 其中前 12 比特位表示发送方连续发 送的数据帧的数量为 12 , 后 14 比特位表示是没有被发送的数据帧数量, 其中第一数据帧, 第二数据帧以及第三数据帧没有被完整接收, 没被发送 的数据帧用 " 1 " 来指示。
在上述技术方案中, 还包括: 记录所述发送方连续发送的数据帧的个 数。 在该技术方案中, 通过记录发送方连续发送的数据帧个数, 可以根据 压缩块确认消息帧中数据帧指示位的值, 判断是某数据帧未完整接收, 还 是发送方未发送相应数据帧。 例如, 如果多个数据帧指示位为
"00011111111111111111111111 " , 其长度为 26 比特位, 那么发送方就 记录下连续发送了 26个数据帧。
在上述技术方案中, 还包括: 重新发送所述接收方没有完整接收的数 据帧。 在该技术方案中, 如果存在数据帧未被接收方完整接收, 则可以重 新 发 送 一 次 。 例 如 , 如 果 多 个 数 据 帧 指 示 位 为 么发送方应该重新发送第一数据帧, 第二数据帧以及第三数据帧。
图 8是根据本发明的一个实施例的数据通信装置的工作流程图。
首先, 说明本实施例中的数据通信装置的工作原理:
在 l lah 标准下的物理帧头中, 物理帧头 SIG (信号) 域分为两个部 分, 即 SIG-A和 SIG-B, 其中, SIG-A的具体结构如背景技术中的表格所 示, SIG-B 根据信道的不同而不同, 在 2MHz 信道中为 26 比特位, 在 4MHz信道中为 27比特位, 在 8MHz和 16MHz信道中为 29比特位。 本 实施例中, 选择用这些比特位来表示数据帧的个数, 具体如下:
定义一种新的 Block ACK机制, 可以称为压缩块确认机制, 考虑到 l lah中 AP覆盖范围广以及数据传输速率低, 所以 AP不可能与一个 STA 在特定的时间内不间断的连续发送数据帧, 所以采用物理帧头中的 SIG-B 的位数为最大的连续发送数据帧的个数。
例如, 在 2MHz信道中, 接收方和发送方允许连续发送数据帧的个数 为 26个, 如果发送过程中有数据帧没被完整接收, 可用 "0" 标记出来, 被完整接收则用 " 1 " 标记, 譬如: 如果 SIG-B 域的值具体为 "01111111111111111111111110" , 则表示第一个数据帧和第 26 个数据 帧传输过程中没被完整接收, 发送方需要重传; 如果发送的数据帧没有
26 个, 发送方和接收方各记下传输数据帧的个数, 余下的部分用 " 1 " 表 示 , 譬 如 一 共 传 输 了 11 个 包 , 如 果 SIG-B 域 为 "01011111111111111111111111 " , 表示第 1 个包和第三个数据帧传输的 时候发生了错误, 那 15 个没有被传输的数据帧的指示位也用 " 1 " 来表 示。
在 4MHz 信道中, 接收方和发送方允许连续发送数据帧的个数为 27 个, 在 8MHz和 16MHz信道中, 接收方和发送方允许连续发送数据帧的 个数为 29个, 具体操作同在 2MHz信道中操作。
基于以上技术方案, 发送方和接收方的工作流程如图 8所示: 步骤 802, 假设在 2MHz信道中, 发送方向接收方连续发送数据帧, 发送方和接收方各自记录数据帧的发送数量;
步骤 804 , 在发送方发送够 26 个数据帧, 或全部数据帧发送完毕 后, 接收方生成压缩块确认消息帧 (可以是 Short ACK ) , 并返回给发送 方;
步骤 806, 发送方解析压缩块确认消息帧中的 SIG部分, 获取其中的 值;
步骤 808 , 对于第 n 比特位而言, 如果其值为 "0" , 则表示发送方 发送的第 n个数据帧没有被完整接收, 需要重新发送该数据帧;
步骤 810, 如果第 n 比特位的值为 " 1 " , 进一步判断是否连续发送 等于 26个数据帧;
步骤 812 , 如果连续发送等于 26 个数据帧, 则表示第 n个数据帧已 被完整接收;
步骤 814, 如果连续发送不足 26个数据帧, 则忽略该位的值。
需要注意的是, 上述的发送方和接收方可以是位于无线局域网络中的 STA和 AP , 也可以是两个终端之间进行数据交互。 虽然以仅 2MHz信道 为例说明了本发明的技术方案, 但是本领域技术人员应当连接, 本发明技 术方案在其他信道中仍然适用。
综上所述, 通过本发明的技术方案, 实现了数据通信装置和数据通信 方法, 解决了现有 l lah 中短确认帧没有解决块确认机制的问题, 有利于 STA和 AP更进一步省电。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于 本领域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精 神和原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明 的保护范围之内。

Claims

权 利 要 求 书
1. 一种数据通信装置, 其特征在于, 包括:
业务处理模块, 通过无线收发模块连续接收多个数据帧, 生成压缩块 确认消息帧, 所述压缩块确认消息帧中包含多个数据帧指示位, 所述多个 数据帧指示位的长度表示发送方连续发送的数据帧的最大数量, 所述多个 数据帧指示位的长度为 n比特位, 如果所述发送方连续发送的数据帧的数 量为 n, 所述多个数据帧指示位中的第 k 比特位的值为第一值时, 表示所 述发送方发送的第 k 个数据帧被所述业务处理模块完整接收, 和 /或所述 第 k比特位的值为第二值时, 表示所述第 k个数据帧没有被所述业务处理 模块完整接收, 通过所述无线收发模块发送所述压缩块确认消息帧;
所述无线收发模块, 用于与所述数据通信装置外部交互数据。
2. 根据权利要求 1 所述的数据通信装置, 其特征在于, 所述多个数 据帧指示位包括所述压缩块确认消息帧的物理帧头中的多个位。
3. 根据权利要求 2 所述的数据通信装置, 其特征在于, 所述多个数 据帧指示位包括所述压缩块确认消 , 帧的所述物理帧头中信号域的多个 位。
4. 根据权利要求 1 所述的数据通信装置, 其特征在于, 在 2MHz信 道中, 所述多个数据帧指示位的长度为 26 比特位, 在 4MHz信道中, 所 述多个数据帧指示位的长度为 27比特位, 在 8MHz和 16MHz信道中, 所 述多个数据帧指示位的长度为 29比特位。
5. 根据权利要求 1 所述的数据通信装置, 其特征在于, 如果所述发 送方连续发送的数据帧的数量为 m, 且所述 m小于所述 n, 则所述第 k比 特位的值为第一值且 k小于或等于 m时, 表示所述第 k个数据帧被所述 业务处理模块完整接收, 和 /或所述第 k 比特位的值为第二值且 k 小于或 等于 m 时, 表示所述第 k 个数据帧没有被所述业务处理模块完整接收, 所述多个数据帧指示位的第 m+1 比特位至第 n 比特位为所述第一值或所 述第二值时, 表示所述发送方未发送第 m+1个至第 n个数据帧。
6. 根据权利要求 1 至 5 中任一项所述的数据通信装置, 其特征在 于, 所述业务处理模块还记录所述发送方连续发送的数据帧的个数。
7. 根据权利要求 1 至 5 中任一项所述的数据通信装置, 其特征在 于, 所述业务接收模块还通过所述无线收发模块重新接收未完整接收的数 据帧。
8. 一种数据通信方法, 其特征在于, 包括:
连续接收多个数据帧;
生成压缩块确认消息帧, 所述压缩块确认消息帧中包含多个数据帧指 示位, 所述多个数据帧指示位的长度表示发送方连续发送的数据帧的最大 数量, 所述多个数据帧指示位的长度为 n比特位, 如果所述发送方连续发 送的数据帧的数量为 n , 所述多个数据帧指示位中的第 k 比特位的值为第 一值时, 表示所述发送方发送的第 k 个数据帧被接收方完整接收, 和 /或 所述第 k比特位的值为第二值时, 表示所述第 k个数据帧没有被所述接收 方完整接收;
发送所述压缩块确认消息帧。
9. 根据权利要求 8 所述的数据通信方法, 其特征在于, 所述多个数 据帧指示位包括所述压缩块确认消息帧的物理帧头中的多个位。
10. 根据权利要求 9所述的数据通信方法, 其特征在于, 所述多个数 据帧指示位包括所述压缩块确认消 , 帧的所述物理帧头中信号域的多个 位。
11. 根据权利要求 8所述的数据通信方法, 其特征在于, 在 2MHz信 道中, 所述多个数据帧指示位的长度为 26 比特位, 在 4MHz信道中, 所 述多个数据帧指示位的长度为 27比特位, 在 8MHz和 16MHz信道中, 所 述多个数据帧指示位的长度为 29比特位。
12. 根据权利要求 8所述的数据通信方法, 其特征在于, 如果所述发 送方连续发送的数据帧的数量为 m , 且所述 m小于所述 n , 则所述第 k比 特位的值为第一值且 k小于或等于 m时, 表示所述第 k个数据帧被所述 接收方完整接收, 和 /或所述第 k 比特位的值为第二值且 k 小于或等于 m 时, 表示所述第 k个数据帧没有被所述接收方完整接收, 所述多个数据帧 指示位的第 m+1 比特位至第 n 比特位为所述第一值或所述第二值时, 表 示所述发送方未发送第 m+1个至第 n个数据帧。
13. 根据权利要求 8 至 12 中任一项所述的数据通信方法, 其特征在 于, 还包括:
记录所述发送方连续发送的数据帧的个数。
14. 根据权利要求 8 至 12 中任一项所述的数据通信方法, 其特征在 于, 还包括:
重新接收未完整接收的数据帧。
15. 一种数据通信装置, 其特征在于, 包括:
业务处理模块, 生成多个数据帧, 并通过无线收发模块连续发送所述 多个数据帧, 以及通过所述无线收发模块接收压缩块确认消息帧, 所述压 缩块确认消息帧中包含多个数据帧指示位, 所述多个数据帧指示位的长度 表示所述业务处理模块连续发送的数据帧的最大数量, 所述多个数据帧指 示位的长度为 n比特位, 如果所述业务处理模块连续发送的数据帧的数量 为 n, 所述多个数据帧指示位中的第 k比特位的值为第一值时, 表示所述 业务处理模块发送的第 k 个数据帧被接收方完整接收, 和 /或所述第 k 比 特位的值为第二值时, 表示所述第 k 个数据帧没有被所述接收方完整接 收;
所述无线收发模块, 用于与所述数据通信装置外部交互数据。
16. 根据权利要求 15 所述的数据通信装置, 其特征在于, 所述多个 数据帧指示位包括所述压缩块确认消息帧的物理帧头中的多个位。
17. 根据权利要求 16 所述的数据通信装置, 其特征在于, 所述多个 数据帧指示位包括所述压缩块确认消 , 帧的所述物理帧头中信号域的多个 位。
18. 根据权利要求 15 所述的数据通信装置, 其特征在于, 在 2MHz 信道中, 所述多个数据帧指示位的长度为 26 比特位, 在 4MHz信道中, 所述多个数据帧指示位的长度为 27比特位, 在 8MHz和 16MHz信道中, 所述多个数据帧指示位的长度为 29比特位。
19. 根据权利要求 15 所述的数据通信装置, 其特征在于, 如果所述 业务处理模块连续发送的数据帧的数量为 m, 且所述 m小于所述 n, 则所 述第 k比特位的值为第一值且 k小于或等于 m时, 表示所述第 k个数据 帧被所述接收方完整接收, 和 /或所述第 k 比特位的值为第二值且 k 小于 或等于 m 时, 表示所述第 k 个数据帧没有被所述接收方完整接收, 所述 多个数据帧指示位的第 m+1 比特位至第 n 比特位为所述第一值或所述第 二值时, 表示所述业务处理模块未发送第 m+1个至第 n个数据帧。
20. 根据权利要求 15至 19中任一项所述的数据通信装置, 其特征在 于, 所述业务处理模块还记录所述发送方连续发送的数据帧的个数。
21. 根据权利要求 15至 19中任一项所述的数据通信装置, 其特征在 于, 所述业务模块还通过所述无线收发模块重新发送所述接收方没有完整 接收的数据帧。
22. 一种数据通信方法, 其特征在于, 包括:
生成多个数据帧, 并连续发送所述多个数据帧;
接收压缩块确认消息帧, 所述压缩块确认消息帧中包含多个数据帧指 示位, 所述多个数据帧指示位的长度表示发送方连续发送的数据帧的最大 数量, 所述多个数据帧指示位的长度为 n比特位, 如果所述发送方连续发 送的数据帧的数量为 n , 所述多个数据帧指示位的第 k 比特位的值为第一 值时, 表示所述发送方发送的第 k 个数据帧被接收方完整接收, 和 /或所 述第 k比特位的值为第二值时, 表示所述第 k个数据帧没有被完整接收。
23. 根据权利要求 22 所述的数据通信方法, 其特征在于, 所述多个 数据帧指示位包括所述压缩块确认消息帧的物理帧头中的多个位。
24. 根据权利要求 23 所述的数据通信方法, 其特征在于, 所述多个 数据帧指示位包括所述压缩块确认消 , 帧的所述物理帧头中信号域的多个 位。
25. 根据权利要求 22 所述的数据通信方法, 其特征在于, 在 2MHz 信道中, 所述多个数据帧指示位的长度为 26 比特位, 在 4MHz信道中, 所述多个数据帧指示位的长度为 27比特位, 在 8MHz和 16MHz信道中, 所述多个数据帧指示位的长度为 29比特位。
26. 根据权利要求 22 所述的数据通信方法, 其特征在于, 如果所述 发送方连续发送的数据帧的数量为 m , 且所述 m小于所述 n , 则所述第 k 比特位的值为第一值且 k小于或等于 m时, 表示所述第 k个数据帧被所 述接收方完整接收, 和 /或所述第 k 比特位的值为第二值且 k 小于或等于 m时, 表示所述第 k个数据帧没有被所述接收方完整接收, 所述多个数据 帧指示位的第 m+1 比特位至第 n 比特位为所述第一值或所述第二值时, 表示所述发送方未发送第 m+1个至第 n个数据帧。
27. 根据权利要求 22至 26中任一项所述的数据通信方法, 其特征在 于, 还包括:
记录所述发送方连续发送的数据帧的个数。
28. 根据权利要求 22至 26中任一项所述的数据通信方法, 其特征在 于, 还包括:
重新发送所述接收方没有完整接收的数据帧。
PCT/CN2013/077491 2012-06-25 2013-06-19 数据通信装置和数据通信方法 Ceased WO2014000593A1 (zh)

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