WO2018176444A1 - 传输数据的方法和装置 - Google Patents

传输数据的方法和装置 Download PDF

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Publication number
WO2018176444A1
WO2018176444A1 PCT/CN2017/079243 CN2017079243W WO2018176444A1 WO 2018176444 A1 WO2018176444 A1 WO 2018176444A1 CN 2017079243 W CN2017079243 W CN 2017079243W WO 2018176444 A1 WO2018176444 A1 WO 2018176444A1
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WIPO (PCT)
Prior art keywords
frame
node
acknowledgement
time interval
indication information
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PCT/CN2017/079243
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English (en)
French (fr)
Inventor
姜彤
董晨
李强
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2017/079243 priority Critical patent/WO2018176444A1/zh
Publication of WO2018176444A1 publication Critical patent/WO2018176444A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/114Indoor or close-range type systems
    • H04B10/116Visible light communication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/14Two-way operation using the same type of signal, i.e. duplex

Definitions

  • Embodiments of the present invention relate to the field of optical wireless communications and, more particularly, to methods and apparatus for transmitting data.
  • Optical Wireless Communication refers to all optical communication without using cables (such as optical fibers).
  • Visible Light Communication (VLC) and infrared communication are all communication methods in optical wireless communication.
  • VLC refers to the way of communicating using the visible light spectrum (380 nm - 780 nm). It has sufficient spectrum resources and is unlicensed frequency band, which can be used free of charge; it is environmentally friendly, has no electromagnetic pollution, can be used in electromagnetic interference sensitive environment, and is safe for human body; in addition, it has better security, because VLC transmission can only be limited to light energy. The place where it is irradiated, so VLC has strong security of confidentiality. Recently, VLC communication has received more and more attention from academia and industry. It can be expected that VLC will become a widely used communication technology in the future.
  • the transmitter can be transmitted by white light visible LED or infrared (IR) LED.
  • the receiver can receive signals by using a photodetector (PD).
  • the PD can be divided into different wavelengths according to the receivable light.
  • IR PD that can only detect infrared rays
  • VL PD that can only detect visible light
  • PD that can be detected by both infrared and visible light. Therefore, in optical wireless communication, full-duplex transmission can be supported without self-interference.
  • node A uses LEDs to transmit data in the visible light band and uses IR PD for reception
  • node B and node C use LEDs to transmit data in the infrared frequency band, using VL PD for reception, and node C sends data to node A, node A.
  • Data can be sent to Node B while receiving with IR PD.
  • node A needs to send and receive data at the same time, so it is in full-duplex mode, and there is no self-interference in this full-duplex transmission.
  • the signal it transmits is in the visible light band, and its PD can only receive the signal in the infrared frequency band.
  • the signal sent by node A is not received by its own receiver PD, so node A does not exist. interference.
  • the node A since the node A sends the visible light communication band to the node B, and the node C sends the infrared frequency band to the node A, the signal of the infrared frequency band sent by the node C does not receive the visible light band from the node A for the node B. The signal causes interference.
  • the transmitting and receiving parties generally send data frames or acknowledged frames in chronological order. For example, after receiving the message (MSG) frame sent by A, B passes through a frame interval (ACK Inter). After -frame Gap, AIFG), B sends an Acknowledgement (ACK) frame to A.
  • MSG message
  • ACK Inter frame interval
  • AIFG Acknowledgement
  • the half-duplex acknowledgment mechanism cannot solve some of the problems that occur when both parties transmit simultaneously in a full-duplex scenario.
  • a and C transmit their MSG frames simultaneously or substantially simultaneously after the start of the Full Duplex Contention-Free Transmission Opportunity (FDCFTXOP).
  • FDCFTXOP Full Duplex Contention-Free Transmission Opportunity
  • a and C cannot.
  • Embodiments of the present invention provide a method and apparatus for transmitting data, when a node communicates with two different nodes simultaneously, avoiding collision of transmission of an acknowledgement frame, and improving bandwidth resource utilization, thereby improving network throughput. .
  • a method of transmitting data comprising:
  • the first node sends a first frame to the second node in the full-duplex contention-free transmission opportunity FDCFTXOP, where the first frame includes first indication information, where the first indication information is used to indicate the second node
  • the first frame includes first indication information, where the first indication information is used to indicate the second node
  • the first node After the first node sends the second frame, the first node receives the first acknowledgement frame sent by the second node.
  • the transmission of the acknowledgement frame is avoided, and the bandwidth resource utilization is improved, thereby improving the network throughput.
  • the third frame sent by the third node is not received
  • Sending, by the first node, the second frame includes:
  • the second frame is sent to the third node, where the second frame includes second indication information, where the second indication information is used to indicate the first
  • the three nodes prohibit sending the next frame to the first node in a time interval adjacent to the time interval corresponding to the second frame, where the first acknowledgement frame is the second node in the first
  • the time interval corresponding to the two frames is sent in the adjacent time interval;
  • the second frame is sent to the second node, where the second frame is an acknowledgment request frame or an acknowledgment request symbol, and is used to request the second node to Transmitting, by the first node, the first acknowledgement frame, where the first acknowledgement frame is within a time interval adjacent to a time interval corresponding to the acknowledgement request frame or the acknowledgement request symbol by the second node Sent.
  • the third frame that is sent by the third node is received
  • Sending, by the first node, the second frame includes:
  • the first node After the first node determines that the end time of the first frame is after the end time of the third frame, the first node sends the first node to the third node after sending the first frame.
  • a second frame where the second frame is a second acknowledgement frame corresponding to the third frame, where the first acknowledgement frame is a time that the second node is adjacent to a time interval corresponding to the second frame Sent within the interval;
  • the first node determines that the end time of the first frame is before the end time of the third frame, the first node sends the third node to the third node after receiving the third frame.
  • a second frame where the second frame is a second acknowledgement frame corresponding to the third frame, where the first acknowledgement frame is adjacent to the second node after a time interval corresponding to the second frame Sent within the time interval.
  • the second acknowledgment frame includes second indication information, where the second indication information is used to indicate that the third node is after the time interval corresponding to the second frame. Within the time interval of the neighbor, it is prohibited to send the next frame to the first node.
  • the third frame sent by the third node can be received, and the end time of the first frame is in the Before the end time of the third frame;
  • the method further includes:
  • the first node determines to start sending the at least one fourth frame to the second node before the end time of the third frame, the first node sends the first frame, The second node sends the at least one fourth frame.
  • the method for transmitting data in the embodiment of the present invention enables the first node to use its resources to transmit its data as much as possible, thereby avoiding waste of resources.
  • the first node is able to start sending the at least one fourth frame to the second node before the end time of the third frame, and the at least one fourth frame The end time of the last fourth frame in the middle is after the end time of the third frame,
  • Sending, by the first node, the second frame includes:
  • the last fourth frame includes third indication information, where the third indication information
  • the first node is able to start sending the at least one fourth frame to the second node before the end time of the third frame, and the at least one fourth frame The end time of the last fourth frame in the middle is before the end time of the third frame,
  • Sending, by the first node, the second frame includes:
  • the first node After receiving the third frame, the first node sends the second frame to the third node, where the second frame is the second acknowledgement frame, where the first acknowledgement frame is Sending, by the second node, an adjacent time interval after a time interval corresponding to the second frame;
  • the first node After transmitting the at least one fourth frame, the first node sends the second frame to the second node, where the second frame is the last fourth frame, and the last fourth frame
  • the fourth indication information is used to indicate that the second node sends the first confirmation to the first node in a time interval adjacent to a time interval corresponding to the third frame.
  • a frame the first acknowledgement frame is an acknowledgement by the second node on part or all of the first frame and the at least one fourth frame, and the second acknowledgement frame corresponding to the third frame is The first node is sent in an adjacent time interval after the end time of the third frame.
  • the first node cannot start sending the at least one fourth frame to the second node before the end time of the third frame
  • Sending, by the first node, the second frame includes:
  • the first node After receiving the third frame, the first node sends the second frame to the third node, where the second frame is the second acknowledgement frame, where the first acknowledgement frame is Sending, by the second node, an adjacent time interval after a time interval corresponding to the second acknowledgement frame;
  • the first node After the first frame, the first node sends the second frame to the second node, where the second frame is an acknowledgment request frame or a confirmation request symbol, and is used to request the second node to Said first node sends said first true a frame, wherein the first acknowledgement frame is sent by the second node in a time interval adjacent to a time interval corresponding to the third frame, where the second acknowledgement frame is the first
  • the node is transmitted in an adjacent time interval after the end time of the third frame.
  • the frame interval may be partially zero or all zeros.
  • a method of transmitting data comprising:
  • the second node receives the first frame sent by the first node in the full-duplex contention-free transmission opportunity FDCFTXOP, where the first frame includes first indication information;
  • the first indication information is used to indicate that the second node sends the first acknowledgement frame corresponding to the first frame to the first node after receiving the second frame.
  • the second node receives the second frame
  • the second node After receiving the second frame, the second node sends the first acknowledgement frame to the first node.
  • the transmission of the acknowledgement frame is avoided, and the bandwidth resource utilization is improved, thereby improving the network throughput.
  • the receiving, by the second node, the second frame includes:
  • the second node receives the first node to send the second frame, where the second frame is an acknowledgment request frame or an acknowledgment request symbol, and is used to request the second node to send the first node to the first node.
  • An acknowledgment frame wherein the first acknowledgment frame is sent by the second node in a time interval adjacent to a time interval corresponding to the acknowledgment request frame or the acknowledgment request symbol, or the first acknowledgment frame
  • the second node receives the second frame that is sent by the first node to the third node, where the second frame is a second acknowledgement frame, and the first acknowledgement frame is that the second node is located at the second node.
  • the time interval corresponding to the second acknowledgement frame is sent in an adjacent time interval.
  • the first confirmation frame includes:
  • the second node Sending, by the second node, the first acknowledgement frame to the first node according to the indication information or the second acknowledgement frame in the at least one fourth frame, where the second acknowledgement frame is the first An acknowledgement frame corresponding to the third frame sent by the node to the third node.
  • the receiving, by the second node, the second frame includes:
  • the second frame sent by the first node, where the second frame is a last fourth frame in the at least one fourth frame, and the last fourth frame includes a third frame Instructing information, wherein the third indication information is used to indicate that the second node sends the first acknowledgement frame to the first node within a time interval adjacent to a time interval corresponding to the second frame
  • the first acknowledgement frame is an acknowledgement by the second node to some or all of the first frame and the at least one fourth frame;
  • the second node receives the second frame, the second frame is the second acknowledgement frame, and the first acknowledgement frame is the second node, the first frame, and the at least one fourth Confirming part or all of the frame, the first confirmation frame being sent by the second node in a time interval adjacent to a time interval corresponding to the second confirmation frame;
  • the last fourth frame includes fourth indication information, where The fourth indication information is used to indicate that the second node sends the first acknowledgement frame to the first node in a time interval adjacent to an end time of the third frame, where the first acknowledgement frame is The second node confirms part or all of the first frame and the at least one fourth frame.
  • the method for transmitting data in the embodiment of the present invention enables the first node to use its resources to transmit its data as much as possible, thereby avoiding waste of resources.
  • the frame interval may be partially zero or all zeros.
  • an apparatus comprising a transceiver unit, the transceiver unit for:
  • the first indication information is used to indicate that the second node sends the first acknowledgement frame corresponding to the first frame to the device after receiving the second frame.
  • the first acknowledgement frame sent by the second node is received.
  • an apparatus comprising a transceiver, the transceiver for:
  • the first indication information is used to indicate that the second node sends the first acknowledgement frame corresponding to the first frame to the device after receiving the second frame.
  • the first acknowledgement frame sent by the second node is received.
  • a device comprising a transceiver unit, the transceiver unit for:
  • the first indication information is used to indicate that the apparatus sends the first acknowledgement frame corresponding to the first frame to the first node after receiving the second frame.
  • an apparatus comprising a transceiver, the transceiver for:
  • the first indication information is used to indicate that the apparatus sends the first acknowledgement frame corresponding to the first frame to the first node after receiving the second frame.
  • a method of transmitting data comprising:
  • the first node receives the third frame sent by the third node in the full-duplex contention-free transmission opportunity FDCFTXOP;
  • the first node sends a first frame to the second node in the process of receiving the third frame, where the first frame includes first indication information;
  • the first indication information is used by the second node to determine, according to the first indication information, a first time interval, where the first time interval is used by the first node to receive the first frame.
  • a time interval of the first acknowledgement frame the initial time corresponding to the first time interval is the same as the initial time of the second time interval, and the second time interval is used by the first node to send the third frame Second, the time interval of the confirmation frame;
  • the first node receives the first acknowledgement frame sent by the second node according to the first indication information.
  • A Since A starts transmitting after C starts to transmit, A can listen to the frame header of the frame sent by C, and can determine the duration of the third frame (duration and the initial time of the first frame and the third frame). The difference between the initial moments is ⁇ C1A1.
  • A receives the MSG_C1 frame from C and parses C1_DURATION. After parsing the C1_DURATION, A starts transmitting the MSG_A1 frame before the end of the MSG_C1 frame sent by C, and carries the first indication information in the MSG_A1 frame.
  • the transmission of the acknowledgement frame is avoided, and the bandwidth resource utilization is improved, thereby improving the network throughput.
  • the first indication information includes a duration of the third frame, and a difference between an initial moment of the first frame and an initial moment of the third frame;
  • the receiving, by the second node, the first acknowledgement frame includes:
  • the first node determines, according to the first indication information, that the end time of the first frame is before the end time of the third frame, the phase of the first node after the end time of the third frame Receiving, by the neighboring time interval, the first acknowledgement frame sent by the second node;
  • the first node determines, according to the first indication information, that the end time of the first frame is after the end time of the third frame, the phase of the first node after the end time of the first frame Receiving the first acknowledgement frame sent by the second node in a time interval of the neighbor.
  • the first indication information includes a duration of the third frame, a difference between an initial moment of the first frame, and an initial moment of the third frame, and a second indication.
  • the second indication information is used to indicate that the second node sends the first node to an end time of the first frame or a time interval adjacent to an end time of the third frame.
  • the first acknowledgement frame, or the second indication information is used to indicate that the second node continues to receive the next frame sent by the first node after the end time of the current frame;
  • the receiving, by the second node, the first acknowledgement frame includes:
  • the first node determines that the end time of the first frame is after the end time of the third frame, the first node is within a time interval adjacent to the end time of the first frame, and receives the location Transmitting, by the second node, the first acknowledgement frame;
  • the first node determines that the end time of the first frame is before the end time of the third frame, the first node receives the location within a time interval adjacent to the end time of the third frame Transmitting, by the second node, the first acknowledgement frame;
  • the method further includes:
  • the first node determines to start sending the at least one fourth frame to the second node before the end time of the third frame, the first node sends the first frame, The second node sends the at least one fourth frame.
  • the method for transmitting data in the embodiment of the present invention enables the first node to use its resources to transmit its data as much as possible, thereby avoiding waste of resources.
  • an end time of the first frame is before an end time of the third frame
  • Receiving the first acknowledgement frame sent by the second node includes:
  • the first node is unable to send the at least one fourth frame to the second node before the first acknowledgement frame, the first node is adjacent to an end time of the third frame Receiving, in the interval, the first acknowledgement frame sent by the second node, where the second indication information in the first frame is used to indicate that the second node is at an end time of the third frame And then sending the first confirmation frame to the first node in an adjacent time interval;
  • the first node is capable of transmitting the at least one fourth frame to the second node before the third frame, the first node after transmitting the last fourth frame or receiving the first The first acknowledgement frame sent by the second node is received in a time interval adjacent to the third frame; wherein the second indication information in the first frame is used to indicate that the second node is receiving And continuing to receive the next frame sent by the first node after the current frame is completed, where the third indication information is included in each fourth frame except the last fourth frame in the at least one fourth frame, the third The indication information is used to indicate that the second node continues to receive the next frame sent by the first node after receiving the current frame, where the last fourth frame includes fourth indication information, where the fourth indication information is used. And instructing the second node to send the first acknowledgement frame to the first node within a time interval adjacent to the end time of receiving the last fourth frame or the third frame.
  • the second acknowledgement frame includes fifth indication information, where the fifth indication information is used to indicate that the third node is adjacent to the time interval after receiving the second acknowledgement frame. Sending the next frame to the first node.
  • the frame interval may be partially zero or all zeros.
  • a method of transmitting data comprising:
  • the second node receives the first frame sent by the first node in the full-duplex contention-free transmission opportunity FDCFTXOP, where the first frame includes first indication information;
  • the first indication information is used by the second node to determine a first time interval according to the first indication information, where the first time interval is used by the first node to receive the first frame. a time interval of the first acknowledgment frame, where the initial time corresponding to the first time interval is the same as the initial time of the second time interval, and the second time interval is used by the first node to send the second frame corresponding to the second time frame Confirm the time interval of the frame;
  • the second node sends the first acknowledgement frame to the first node according to the first indication information.
  • the transmission of the acknowledgement frame is avoided, and the bandwidth resource utilization is improved, thereby improving the network throughput.
  • the first indication information includes a duration of the third frame, and a difference between an initial moment of the first frame and an initial moment of the third frame;
  • the sending the first acknowledgement frame to the first node includes:
  • the second node determines, according to the first indication information, that the end time of the first frame is before the end time of the third frame, the second node is adjacent after the end time of the third frame Sending the first confirmation frame to the first node in a time interval;
  • the second node determines, according to the first indication information, that the end time of the first frame is after the end time of the third frame, the second node is adjacent after the end time of the first frame
  • the first acknowledgement frame is sent to the first node within a time interval.
  • the first indication information includes a duration of the third frame, a difference between an initial moment of the first frame, and an initial moment of the third frame, and a second indication.
  • the second indication information is used to indicate that the second node is in the adjacent time interval after the end time of the first frame or the end time of the third frame, to the first node Sending the first confirmation frame;
  • the sending the first acknowledgement frame to the first node includes:
  • the second node determines, according to the first indication information, that an end time of the first frame is after an end time of the third frame, the second node is adjacent to an end time of the first frame. Sending the first confirmation frame to the first node in a time interval;
  • the second node determines, according to the first indication information, that the end time of the first frame is before the end time of the third frame, the second node is adjacent after the end time of the third frame
  • the first acknowledgement frame is sent to the first node within a time interval.
  • the first indication information includes a duration of the third frame, a difference between an initial moment of the first frame, and an initial moment of the third frame, and a second indication.
  • the second indication information is used to indicate that the second node continues to receive the next frame sent by the first node after the current frame;
  • the method further includes:
  • the second node After receiving the first frame, the second node receives at least one fourth frame sent by the first node, and each fourth of the at least one fourth frame except the last fourth frame
  • the third indication information is included in the frame, where the third indication information is used to indicate that the second node continues to receive the next frame sent by the first node after receiving the current frame, where the last fourth frame is included.
  • a fourth indication information where the fourth indication information is used to indicate that the second node is in the adjacent time interval after the end time of the last fourth frame or the third frame end time Sending, by the node, the first acknowledgement frame;
  • the sending the first acknowledgement frame to the first node includes:
  • the second node sends the first node to the first node within a time interval adjacent to the end time of the third frame The first confirmation frame;
  • the second node is in the adjacent time interval after receiving the last fourth frame, to the first time
  • the node sends the first confirmation frame.
  • the method for transmitting data in the embodiment of the present invention enables the first node to use its resources to transmit its data as much as possible, thereby avoiding waste of resources.
  • the frame interval may be partially zero or all zeros.
  • the apparatus includes a transceiver unit, and the transceiver unit is configured to:
  • the first indication information is used by the second node to determine, according to the first indication information, a first time interval, where the first time interval is used by the device to receive the first frame.
  • a time interval of the acknowledgment frame the initial time corresponding to the first time interval is the same as the initial time of the second time interval, and the second time interval is used by the device to send the second acknowledgement frame corresponding to the third frame Time interval
  • an apparatus comprising a transceiver, the transceiver for:
  • the first indication information is used by the second node to determine, according to the first indication information, a first time interval, where the first time interval is used by the device to receive the first frame.
  • a time interval of the acknowledgment frame the initial time corresponding to the first time interval is the same as the initial time of the second time interval, and the second time interval is used by the device to send the second acknowledgement frame corresponding to the third frame Time interval
  • an apparatus comprising a transceiver unit, the transceiver unit for:
  • the first indication information is used by the device to determine a first time interval according to the first indication information, where the first time interval is used by the first node to receive the first frame corresponding to the first frame.
  • the time interval of the acknowledgment frame, the initial time corresponding to the first time interval is the same as the initial time of the second time interval, and the second time interval is used by the first node to send the second acknowledgement frame corresponding to the third frame Time interval
  • a device comprising a transceiver, the transceiver for:
  • the first indication information is used by the device to determine a first time interval according to the first indication information, where the first time interval is used by the first node to receive the first frame corresponding to the first frame.
  • the time interval of the acknowledgment frame, the initial time corresponding to the first time interval is the same as the initial time of the second time interval, and the second time interval is used by the first node to send the second acknowledgement frame corresponding to the third frame Time interval
  • a method of transmitting data comprising:
  • the first node acquires the acknowledgement frame transmission information, where the acknowledgement frame transmission information includes a start time of the first time interval and a start time of the second time interval, where the first time interval is used by the first node Receiving a time interval of the first acknowledgement frame corresponding to the first frame sent by the second node, where the second time interval is a time interval for the first node to send the second acknowledgement frame corresponding to the third frame to the third node Or the acknowledgement frame transmission information includes frequency band information used by the second node and frequency band information used by the third node;
  • the first node sends a first frame to the second node in a full-duplex contention-free transmission opportunity FDCFTXOP;
  • the first node receives the first acknowledgement frame and the second acknowledgement frame according to the acknowledgement frame transmission information.
  • the transmission of the acknowledgement frame is avoided, and the bandwidth resource utilization is improved, thereby improving the network throughput.
  • the acknowledgement frame transmission information includes a start time of a first time interval and a start time of a second time interval, a start time of the first time interval and the second time interval The starting moment is the same;
  • the receiving the first acknowledgement frame and sending the second acknowledgement frame include:
  • the first node receives the first acknowledgement frame and the second acknowledgement frame at an initial moment indicated by the acknowledgement frame transmission information.
  • the method for transmitting data in the embodiment of the present invention can ensure that when the first node sends an ACK frame, it does not cause conflict with other transmissions.
  • the first frame or the first acknowledgement frame includes first indication information, where the first indication information is used to indicate that the third node sends the third frame to the location The maximum duration of the next frame sent by the first node; or the first indication information is used to indicate that the third node corresponds to the next frame sent by the first node after sending the third frame. The initial time of the time interval corresponding to the frame is confirmed.
  • the acknowledgement frame transmission information includes a first frequency band corresponding to the data frame and a second frequency band corresponding to the acknowledgement frame, where the first frequency band and the second frequency band do not overlap;
  • the receiving the first acknowledgement frame and sending the second acknowledgement frame include:
  • the data frame and the acknowledgement frame are sent through two independent “channels”, so as to prevent the acknowledgement frame sent by the second node from colliding with other transmissions, and let the first node use the resource to transmit its data as much as possible, thereby avoiding Waste of resources.
  • the acknowledgement frame transmission information includes a first frequency band used by the second node to send the first acknowledgement frame, and the third node is configured to send the third frame.
  • the second frequency band used, the first frequency band and the second frequency band do not overlap;
  • the receiving the first acknowledgement frame and sending the second acknowledgement frame include:
  • the first node sends the second acknowledgement frame on the first frequency band and the second frequency band.
  • the frequency band of the third frame does not overlap with the frequency band of the first acknowledgement frame, and at the same time, the first frame The frequency band does not overlap with the frequency band of the second acknowledgement frame. Therefore, when the first node receives the data frame and the acknowledgement frame at the same time, the first node can perform the normal interpretation to avoid the transmission conflict.
  • the method before the first node sends the first frame to the second node on the full-duplex contention-free transmission opportunity FDCFTXOP, the method further includes:
  • the first node Before the first node sends the first frame, determining whether there is at least one second frame from the third node that is received but not confirmed;
  • the confirmation information corresponding to some or all of the second frames in the at least one second frame is added to the first frame.
  • the method for transmitting data in the embodiment of the present invention enables the first node to use its resources to transmit its data as much as possible, thereby avoiding waste of resources.
  • the method further includes:
  • the second indication information is used to indicate that the current frame of the first node is the last data frame
  • the first node sends a continuous plurality of second data frames to the second node after the first frame.
  • a frame interval is included between data frames.
  • the first frequency band corresponds to a common baseband modulation mode
  • the second frequency band corresponds to a baseband multi-carrier modulation mode
  • the common baseband modulation mode includes an open key control OOK modulation mode or a multi-pulse position MPPM modulation.
  • the baseband multi-carrier modulation mode includes an asymmetrically limited optical orthogonal frequency division multiplexing (ACO-OFDM) modulation method or a DC offset optical orthogonal frequency division multiplexing (DCO-OFDM) modulation scheme.
  • ACO-OFDM optical orthogonal frequency division multiplexing
  • DCO-OFDM DC offset optical orthogonal frequency division multiplexing
  • the first node acquires acknowledgement frame transmission information, including:
  • the first node acquires the acknowledgement frame transmission information by negotiating with the second node and the third node during the establishment of the communication link; or the first node receives the media sent by the domain master node DM. Accessing a plan MAP frame, the MAP frame including the acknowledgement frame transmission information.
  • the frame interval may be partially zero or all zeros.
  • a fourteenth aspect a method of transmitting data is provided, the method comprising:
  • the second node acquires the acknowledgement frame transmission information, where the acknowledgement frame transmission information includes a start time of the first time interval and a start time of the second time interval, where the first time interval is used by the first node Receiving a time interval of the first acknowledgement frame corresponding to the first frame sent by the second node, where the second time interval is a time interval for the first node to send the second acknowledgement frame corresponding to the third frame to the third node Or the acknowledgement frame transmission information includes frequency band information used by the second node and frequency band information used by the third node;
  • the second node sends the first acknowledgement frame to the first node according to the acknowledgement frame transmission information.
  • the transmission of the acknowledgement frame is avoided, and the bandwidth resource utilization is improved, thereby improving the network throughput.
  • the acknowledgement frame transmission information includes a start time of the first acknowledgement frame, and an initial moment of the first acknowledgement frame is the same as an initial moment of the second acknowledgement frame, where the The second acknowledgement frame is an acknowledgement performed by the first node on the third frame sent by the third node;
  • the sending the first acknowledgement frame to the first node includes:
  • the second node sends the first acknowledgement frame to the first node at an initial moment indicated by the acknowledgement frame transmission information.
  • the first frame or the first acknowledgement frame further includes first indication information, where the first indication information is used to indicate that the third node sends the third frame to The maximum duration of the next frame sent by the first node; or the first indication information is used to indicate that the third node corresponds to the next frame sent by the first node after sending the third frame.
  • the acknowledgement frame transmission information includes a first frequency band corresponding to the data frame and a second frequency band corresponding to the acknowledgement frame, where the first frequency band and the second frequency band do not overlap;
  • the sending the first acknowledgement frame to the first node includes:
  • the acknowledgement frame transmission information includes a first frequency band used by the second node to send the first acknowledgement frame, and the third node is configured to send the third frame.
  • the second frequency band used, the first frequency band and the second frequency band used by the third node do not overlap;
  • the sending the first acknowledgement frame to the first node includes:
  • the second node receives the second acknowledgement frame sent by the first node on the first frequency band and the second frequency band.
  • the first frequency band corresponds to a common baseband modulation mode
  • the second frequency band corresponds to a baseband multi-carrier modulation mode
  • the common baseband modulation mode includes an open key control OOK modulation mode or a multi-pulse position MPPM modulation.
  • the baseband multi-carrier modulation mode includes an asymmetrically limited optical orthogonal frequency division multiplexing (ACO-OFDM) modulation method or a DC offset optical orthogonal frequency division multiplexing (DCO-OFDM) modulation scheme.
  • ACO-OFDM optical orthogonal frequency division multiplexing
  • DCO-OFDM DC offset optical orthogonal frequency division multiplexing
  • the second node acquires the acknowledgement frame transmission information, including:
  • the second node acquires the acknowledgement frame transmission information by negotiating with the first node and the third node in establishing a communication link; or the second node receives the media sent by the domain master node DM Accessing a plan MAP frame, the MAP frame including the acknowledgement frame transmission information.
  • the frame interval may be partially zero or all zeros.
  • a device comprising a transceiver unit, the transceiver unit for:
  • the acknowledgement frame transmission information includes a start time of the first time interval and a start time of the second time interval, where the first time interval is used by the device to receive the first frame sent by the second node. a time interval of the first acknowledgement frame, where the second time interval is a time interval for the apparatus to send a second acknowledgement frame corresponding to the third frame to the third node; or the acknowledgement frame transmission information includes the first Frequency band information used by the two nodes and frequency band information used by the third node;
  • an apparatus comprising a transceiver, the transceiver for:
  • the acknowledgement frame transmission information includes a start time of the first time interval and a start time of the second time interval, where the first time interval is used by the device to receive the first frame sent by the second node. a time interval of the first acknowledgement frame, where the second time interval is a time interval for the apparatus to send a second acknowledgement frame corresponding to the third frame to the third node; or the acknowledgement frame transmission information includes the first Frequency band information used by the two nodes and frequency band information used by the third node;
  • the apparatus of the fifteenth aspect and the sixteenth aspect is capable of implementing the respective steps of the first node in the above method.
  • an apparatus comprising a transceiver unit, the transceiver unit for:
  • the acknowledgement frame transmission information includes a start time of the first time interval and a start time of the second time interval, where the first time interval is used by the device to receive the first frame sent by the second node. a time interval of the first acknowledgement frame, where the second time interval is a time interval for the apparatus to send a second acknowledgement frame corresponding to the third frame to the third node; or the acknowledgement frame transmission information includes the first Frequency band information used by the two nodes and frequency band information used by the third node;
  • an apparatus comprising a transceiver, the transceiver for:
  • the acknowledgement frame transmission information includes a start time of the first time interval and a start time of the second time interval, where the first time interval is used by the device to receive the first frame sent by the second node. a time interval of the first acknowledgement frame, where the second time interval is a time interval for the apparatus to send a second acknowledgement frame corresponding to the third frame to the third node; or the acknowledgement frame transmission information includes the first Frequency band information used by the two nodes and frequency band information used by the third node;
  • a method of transmitting data comprising:
  • the first node sends the first frame to the second node in the full-duplex contention-free transmission opportunity FDCFTXOP and receives the third frame sent by the third node;
  • the first node After the first node sends the first frame, the first node sends a second acknowledgement frame to the third node, where the second acknowledgement frame is an acknowledgement performed by the first node on the third frame.
  • the first node After the first node sends the second acknowledgement frame, the first node receives the first acknowledgement frame sent by the second node, where the first acknowledgement frame is the first node to the first frame Undergo verification.
  • the first node sends the third frame to the third node after sending the first frame Before sending the second acknowledgement frame
  • the method further includes:
  • the first node Determining, by the first node, whether the third frame sent by the third node has been received, and if the first node has received the third frame sent by the third node, the first node Sending a second acknowledgement frame to the third node in a time interval adjacent to the time interval corresponding to the first frame; or if the first node does not receive the third node sent by the third node a frame, the first node sends a second acknowledgement frame to the third node in an adjacent time interval after the time interval corresponding to the third frame.
  • a method of transmitting data comprising:
  • the second node receives the first frame sent by the first node in the full-duplex contention-free transmission opportunity FDCFTXOP;
  • the second node After receiving the first frame, the second node receives a second acknowledgement frame sent by the first node to the third node, where the second acknowledgement frame is the first node Confirming the third frame sent by the third node;
  • the second node After receiving the second acknowledgement frame, the second node sends a first acknowledgement frame to the first node in a time interval adjacent to the time interval corresponding to the second acknowledgement frame, where the first acknowledgement frame is The first node confirms the first frame.
  • a device comprising a transceiver unit, the transceiver unit for:
  • the first acknowledgement frame sent by the second node is received, and the first acknowledgement frame is used by the device to confirm the first frame.
  • an apparatus comprising a transceiver, the transceiver for:
  • the first acknowledgement frame sent by the second node is received, and the first acknowledgement frame is used by the device to confirm the first frame.
  • the apparatus of the twenty-first aspect and the twenty-second aspect is capable of implementing the respective steps of the first node in the above method.
  • a device comprising a transceiver unit, the transceiver unit for:
  • an apparatus comprising a transceiver, the transceiver for:
  • the second acknowledgement frame is an acknowledgement performed by the first node on a third frame sent by the third node.
  • the apparatus of the twenty-third aspect and the twenty-fourth aspect is capable of implementing the respective steps of the first node in the above method.
  • a twenty-fifth aspect a computer readable storage medium storing a program, the program causing a network device to perform a method in any one of the possible implementations of the above methods.
  • a computer program product comprising instructions which, when run on a computer, cause the computer to perform the methods described in the above aspects.
  • Figure 1 is an illustration of an example of the prior art.
  • FIG. 2 is a structural diagram of a network structure according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a network topology in accordance with an embodiment of the present invention.
  • FIG. 4 is another schematic diagram of a network topology in accordance with an embodiment of the present invention.
  • FIG. 5 is an illustration of a full duplex transmission structure in accordance with an embodiment of the present invention.
  • FIG. 6 is another example of a full duplex transmission structure in accordance with an embodiment of the present invention.
  • FIG. 7 is a schematic flowchart of a method of transmitting data according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a first transmission in an FDCFTXOP according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a second transmission in an FDCFTXOP according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a third transmission in an FDCFTXOP according to an embodiment of the present invention.
  • FIG. 11 is a fourth transmission diagram in an FDCFTXOP according to an embodiment of the present invention.
  • FIG. 12 is a fifth schematic structural diagram of an FDCFTXOP according to an embodiment of the present invention.
  • FIG. 13 is a sixth transmission diagram in an FDCFTXOP according to an embodiment of the present invention.
  • FIG. 14 is a schematic diagram of a seventh transmission in an FDCFTXOP according to an embodiment of the present invention.
  • FIG. 15 is another schematic flowchart of a method of transmitting data according to an embodiment of the present invention.
  • 16 is a first transmission diagram in an FDCFTXOP according to an embodiment of the present invention.
  • FIG. 17 is a schematic diagram of a second transmission in an FDCFTXOP according to an embodiment of the present invention.
  • FIG. 18 is a schematic diagram of a third transmission in an FDCFTXOP according to an embodiment of the present invention.
  • FIG. 19 is still another schematic flowchart of a method of transmitting data according to an embodiment of the present invention.
  • FIG. 20 is a first transmission diagram in an FDCFTXOP according to an embodiment of the present invention.
  • 21 is a schematic diagram of a second transmission in an FDCFTXOP according to an embodiment of the present invention.
  • FIG. 22 is a schematic diagram of a third transmission in an FDCFTXOP according to an embodiment of the present invention.
  • FIG. 23 is a schematic diagram of a fourth transmission in an FDCFTXOP according to an embodiment of the present invention.
  • FIG. 24 is a schematic diagram of a fifth transmission in an FDCFTXOP according to an embodiment of the present invention.
  • Figure 25 is a schematic block diagram of an apparatus for transmitting data in accordance with an embodiment of the present invention.
  • FIG. 26 is another schematic block diagram of an apparatus for transmitting data according to an embodiment of the present invention.
  • FIG. 27 is still another schematic block diagram of an apparatus for transmitting data according to an embodiment of the present invention.
  • the technical solutions of the embodiments of the present invention can be applied to various optical wireless communication systems.
  • ITU-T International Telecommunication Union Telecommunication Standardization Sector
  • G.vlc VLC standard
  • Another example is a full-duplex optical wireless communication system for multi-node communication and the like.
  • FIG. 2 is a structural diagram of a network structure according to an embodiment of the present invention.
  • a G.vlc network is called a domain.
  • a node in the network acts as a primary master (DM) to manage the network for normal work. For example, it is responsible for scheduling network resources and so on.
  • Other non-DM common nodes are called Endpoints (EPs).
  • the DM may schedule network resources and transmissions based on the Media Access Control MAC (MAC) cycle.
  • each MAC period can be classified into a Contention-Free Transmission Opportunity (CFTXOP), a Shared Transmission Opportunity (STXOP), and a Full Duplex Contention-Free Transmission Plan (Full Duplex Contention- Free Transmission Opportunity, FDCFTXOP) and Full Duplex Shared Transmission Opportunity (FDSTXOP).
  • the STXOP may include a Contention-Free Time Slot (CFTS) and a Contention-Based Time Slot (CBTS).
  • CFTS Contention-Free Time Slot
  • CBTS Contention-Based Time Slot
  • the coordinator In each MAC cycle, the coordinator carries the scheduling of the MAP frame sent in the current MAC period by sending a Media Access Plan (MAP) frame, dispatching network scheduling information, control parameters, and the like. Information, control parameters, etc. apply to the next MAC cycle.
  • MAP Media Access Plan
  • the embodiment of the present invention is described by taking a full-duplex non-contention transmission opportunity as an example.
  • the FDCFTXOP may be a transmission opportunity allocated by the DM to two nodes or three nodes. When three nodes are dedicated, one of the nodes should support simultaneous transmission and reception, and the other two nodes only receive and transmit only. .
  • the master node in the embodiment of the present invention may be a base station or a network device having a base station function.
  • the network device may be a base station (Base Transceiver Station, BTS) in the GSM system or CDMA, or a base station (NodeB, NB) in the WCDMA system, or an evolved base station (Evolved Node B in the LTE system).
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • Evolved Node B evolved base station
  • the eNB or eNodeB), or the network device may be a relay station, an access point, an in-vehicle device, a wearable device, and a network device in a future 5G network.
  • the endpoint node may be a terminal device, and the terminal device may also be referred to as an access terminal, a user equipment (User Equipment, UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, and a user.
  • the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless A communication-enabled handheld device, computing device, or other linear processing device connected to a wireless modem, an in-vehicle device, a wearable device, and the like.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • CM centralized mode
  • UM unified mode
  • FIG. 3 is a schematic diagram of a CM network topology structure according to an embodiment of the present invention.
  • the topology includes DM, EP1, EP2, and EP3.
  • the topology adopts a centralized mode, that is, EP1, EP2, and EP3 can only communicate with the DM, and the EPs cannot directly communicate with each other.
  • FIG. 4 is a schematic diagram of a UM network topology structure according to an embodiment of the present invention.
  • the topology includes DM, EP1, EP2, EP3, EP4, and EP5.
  • the topology adopts a unified mode. Any two EPs may communicate with each other. Multiple EPs with relay function are relayed. Specifically, as shown in FIG. 4, EP4 can communicate with DM through EP3, and EP5 can communicate with DM through EP3 and EP4.
  • FIG. 5 is an illustration of a full duplex transmission structure in accordance with an embodiment of the present invention.
  • the transmitter of node A is the VL LED
  • the receiver is the IR PD
  • the transmitters of nodes B and C are the IR LEDs
  • the receiver is the VL PD. That is, by transmitting and receiving optical signals of different bands, simultaneous transmission and reception can be realized at the node A, that is, when the signal transmitted by C is received, a signal is transmitted to B. The transmission of C will not cause interference to the reception of B.
  • FIG. 6 is another example of a full duplex transmission structure in accordance with an embodiment of the present invention.
  • the transmitter of node A is a VL LED
  • the receiver is an IR PD
  • the transmitters of nodes B and C are IR LEDs
  • the receiver is VL+IR PD (ie, both visible light and infrared rays can be detected). That is, by transmitting and receiving optical signals of different bands, simultaneous transmission and reception can be realized at the node A, that is, when the signal transmitted by C is received, a signal is transmitted to B. Since the transmission of C may cause interference to the reception of B, it may be further limited that B and C cannot detect each other and detect the signal transmitted by the other party.
  • FIG. 5 and FIG. 6 are merely exemplary descriptions of the full-duplex scenario of the embodiment of the present invention, and the embodiments of the present invention are not limited.
  • three nodes may be EP, B may be EP, and A is DM. No specific restrictions.
  • the full duplex process is specifically divided into three scenarios by three nodes (the first node A, the second node B, and the third node C):
  • Scenario 1 The first node starts receiving the third frame sent by the third node in the process of sending the first frame.
  • Scenario 2 The first node starts to send the first frame to the second node in the process of receiving the third frame.
  • Scenario 3 The first node starts receiving the third frame sent to the third node while starting to send the first frame.
  • the first frame is a data frame sent by the first node to the second node
  • the third frame is a data frame sent by the third node to the first node.
  • first frame and the third frame may also be a service data frame or a management information frame or a physical frame containing service data or management information that needs to be acknowledged by the receiving node.
  • scenario 1 above may be understood as an initial moment when the first node sends the first frame to the second node earlier than an initial moment when the third node sends the third frame to the first node.
  • scenario 2 can be understood as the initial time at which the first node sends the first frame to the second node is later than the initial time at which the third node sends the third frame to the first node.
  • scenario 3 can be understood as the initial time when the first node sends the first frame to the second node is equal to the initial time when the third node sends the third frame to the first node.
  • the transmission of the first node and the third node in scenario 3 requires “simultaneous” start, but “simultaneous” does not require strict and consistent time, for example, symbol level synchronization.
  • the time interval corresponding to the first frame is the same as the start time of the time interval corresponding to the third frame.
  • the time interval in the embodiment of the present invention may be a time interval corresponding to the data frame, or may be a time interval corresponding to the confirmation frame.
  • the embodiment of the invention is not specifically limited. That is, the time interval in the embodiment of the present invention is used for the table. Shows the time used to transmit a frame.
  • the time interval may be a time between a time when a frame is transmitted and a time when the transmission ends. It should be understood that since there is generally an interframe space between different frames transmitted, the interframe space is not included in the frame. In the time interval, there may be an interframe space between two adjacent time intervals.
  • first, second, third, etc. are used in the embodiments of the present invention to describe various frames, indications, and nodes, but such frames, indications, and nodes should not be limited to these terms. These terms are only used to distinguish frames, indications, and nodes from each other. That is to say, the first frame, the second frame, and the third frame in the embodiment of the present invention are not applied to the transmission order of the limited frames, the number of frames, and the like.
  • the first frame may also be referred to as a fifth frame or the like without departing from the scope of the embodiments of the present invention.
  • A is transmitted to B, and C is transmitted to A.
  • An example in which A sends a first frame before C or a third frame simultaneously with C is taken as an example. If A sends the first frame and has received the ACK of B, the solution of the embodiment of the present invention is the application scenario of the next frame sent by A and the third frame sent by C.
  • the first node is replaced by A
  • the second node is replaced by B
  • the third node is replaced by C.
  • the drawing in the embodiment of the present invention uses A to send a first frame to B at the start time of FDCFTXOP, or to receive a third frame sent by C at the start time of FDCFTXOP as an example, but the present invention
  • the embodiment is not only applicable to an application scenario in which a data frame is received or transmitted at the start time of the FDCFTXOP.
  • the technical solution of the embodiment of the present invention is applicable to any period of the FDCFTXOP.
  • a frame interval between each frame there may be a frame interval between each frame, that is, a frame interval may exist between the transmission data frame and the acknowledgement frame.
  • the frame interval may be partially zero or all zeros.
  • the embodiments of the present invention are not limited.
  • the first node can instruct the second node to send the start time of the first acknowledgement frame, and indicate that the third node can send the start time of the next frame. Furthermore, the success rate of data transmission is guaranteed.
  • FIG. 7 is a schematic flowchart of a method 100 for transmitting data according to an embodiment of the present invention.
  • the method 100 includes:
  • the first node sends a first frame to the second node in the FDCFTXOP, where the first frame includes first indication information.
  • the first indication information is used to indicate that the second node sends the first acknowledgement frame corresponding to the first frame to the first node after receiving the second frame.
  • the second indication information is used to indicate that the third node prohibits sending the next frame to the first node in a time interval adjacent to a time interval corresponding to the second frame.
  • the third indication information is used to indicate that the second node sends the first acknowledgement frame to the first node in a time interval adjacent to a time interval corresponding to the second frame.
  • the fourth indication information is used to indicate that the second node sends the first acknowledgement frame to the first node in a time interval adjacent to a time interval corresponding to the third frame.
  • the fifth indication information is used to indicate that the third node sends the next frame to the first node within a time interval adjacent to the second acknowledgement frame.
  • the indication information in the data frame may be expressed in the form of “ACK time indication”.
  • the value may be as follows:
  • the indication information of the confirmation frame may be expressed in the form of “ACK end indication”.
  • the value may be as follows:
  • the “ACK time indication” is carried in the data frame sent by A to B, and the “ACK end indication” is carried in the acknowledgement frame sent by A to the third frame to C.
  • the second frame may be an acknowledgement frame request frame or an acknowledgement request symbol, or may be a data frame sent by the first node to the second node, or may be a first node to the second node.
  • the second frame sent by the node may also be an acknowledgment frame for the data frame sent by the first node to the third node.
  • the specific form of the second frame is not limited in the embodiment of the present invention. That is to say, any information or signal capable of instructing the second node to send the first acknowledgement frame belongs to the second frame in the embodiment of the present invention.
  • the second frame in the embodiment of the present invention may carry any of the foregoing indication information.
  • the first indication information may be carried, or the third indication information may be carried, or the fourth indication information may be carried.
  • the second frame is an acknowledgement frame, the second indication information may be carried, or the fifth indication information may be carried.
  • the first node sends a second frame.
  • the first node receives the first acknowledgement frame corresponding to the first frame sent by the second node after the second frame.
  • the first node sends the second frame to the second node, or the first node sends the first frame to the third node, so that after the second node receives the second frame, the second node After the second frame, the first acknowledgement frame corresponding to the first frame is sent to the first node.
  • A indicates how B is ACKed through a series of judging processes, thereby preventing the ACK sent by B from colliding with other transmissions.
  • the first frame in the embodiment of the present invention is a data frame that is sent by the first node to the second node.
  • the first acknowledgement frame may be a frame sent by the second node to the first node for confirming the first frame.
  • the third frame may be a data frame, or may not be received (ie, the third node)
  • the third frame is not sent to the first node). Therefore, the following description will be made.
  • the third frame sent by the third node is not received.
  • the first node after transmitting the first frame, the first node sends the second frame to the third node, where the second frame includes second indication information, where the second indication information is used to indicate that the third node is The time interval corresponding to the second frame In the subsequent adjacent time interval, the sending of the next frame to the first node is prohibited, wherein the first acknowledgement frame is sent in the time interval adjacent to the second node after the time interval corresponding to the second frame.
  • the first node sends the second frame to the third node in a time interval adjacent to a time interval corresponding to the first frame.
  • the first acknowledgement frame is sent by the second node after receiving the second frame.
  • A does not receive the third frame sent by C, that is, the second frame sent by A to C may include only the second indication information.
  • B After receiving the IFG2 following the ACK frame transmitted by this A to C, B transmits an acknowledgement frame of the MSG_A1 frame to C.
  • C is not allowed to transmit the next frame within IFG1+ACK_DURATION+IFG2+ACK_DURATION after detecting MSG_A1.
  • ACK_DURATION indicates the duration of the ACK frame, that is, the length of the time interval corresponding to the ACK frame
  • IFG1 indicates the inter-frame Gap (IFG). It should be understood that ACK_DURATION in the related drawings below has the same meaning as IFG1.
  • the first node after transmitting the first frame, the first node sends the second frame to the second node, where the second frame is an acknowledgment request frame or a confirmation request symbol, and is used to request the second node to A node sends the first acknowledgement frame.
  • the first acknowledgement frame is sent by the second node in a time interval adjacent to the acknowledgment request frame or the time interval corresponding to the acknowledgment request symbol.
  • the second node after the second node receives the acknowledgment request frame or the acknowledgment request symbol, the second node sends the first time interval after the acknowledgment request frame or the time interval corresponding to the acknowledgment request symbol. Confirm the frame.
  • A sends the MSG_A1 frame until the MSG_A1 frame is transmitted, and no frame from C is received, and A sends an "ACK request" to B.
  • it can be implemented by transmitting an "ACK request symbol”.
  • the "ACK request symbol” itself is used to instruct B to send an ACK frame of the MSG_A1 frame to A after receiving the "ACK request symbol”.
  • C is not allowed to transmit the next frame within (IFG1)+TS_DURATION+ACK_DURATION after detecting that MSG_A1 is transmitted.
  • TS_DURATION indicates the duration of the "ACK request symbol", that is, the length of the time interval corresponding to the "ACK request symbol”.
  • B may also send an ACK frame of the MSG_A1 frame to A after a frame interval after receiving the "ACK request symbol", or may send an ACK of the MSG_A1 frame to A without the frame interval. frame.
  • A may start to transmit after IFG1, or may be directly sent (time when the IFG1 is not passed).
  • the first node is capable of receiving the third frame sent by the third node in a time interval corresponding to the first frame.
  • the first node determines that the end time of the first frame is after the end time of the third frame, the first node sends the second frame to the third node after sending the first frame, the second frame And a second acknowledgement frame corresponding to the third frame, where the first acknowledgement frame is sent by the second node in a time interval adjacent to a time interval corresponding to the second frame.
  • the first acknowledgement frame is sent by the second node after receiving the second acknowledgement frame.
  • the second node after receiving the second acknowledgement frame corresponding to the third frame sent by the first node to the third node, the second node sends the first acknowledgement frame to the first node.
  • the second acknowledgment frame includes second indication information, where the second indication information is used to indicate that the third node is prohibited from being in the first time interval after the time interval corresponding to the second frame. Send the next frame.
  • a sends the MSG_A1 frame it detects that C also sends the MSG_C1 frame, and then can obtain the frame length (C1_DURATION) of MSG_C1.
  • ⁇ A1C1 is the difference between the transmission time of C and the MSG_C1 and MSG_A1 frames.
  • the ⁇ A1C1 is 0, that is, the first node and the third node start transmitting simultaneously.
  • C may decide to send more frames after sending MSG_C1, such as sending MSG_C2 and so on, until MSG_Cj, but to be sent before the end of MSG_A1.
  • the first node determines that the end time of the first frame is before the end time of the third frame, the first node sends the second frame to the third node after receiving the third frame.
  • the second frame is a second acknowledgement frame corresponding to the third frame.
  • the first acknowledgement frame is sent by the second node after receiving the second acknowledgement frame.
  • the second node after receiving the second acknowledgement frame corresponding to the third frame sent by the first node to the third node, the second node sends the first acknowledgement frame to the first node.
  • the second acknowledgment frame includes second indication information, where the second indication information is used to indicate that the third node is prohibited from being in the first time interval after the time interval corresponding to the second frame. Send the next frame.
  • the actions of the first node, the second node, and the third node are similar to the implementation of the end time of the first frame after the end time of the third frame. .
  • the first node determines, according to the duration of the third frame, whether the second node can be sent to the second node. At least one fourth frame is sent, and subsequent operations are performed according to the judgment result.
  • the third frame sent by the third node can be received, and the end time of the first frame is before the end time of the third frame.
  • the first node Before the first node sends the second frame, according to the duration of the third frame, whether it is possible to start sending at least one fourth frame to the second node before the end time of the third frame; if the first node Determining that at least one fourth frame can be started to be sent to the second node before the end time of the third frame, the first node transmitting at least one fourth frame to the second node after transmitting the first frame.
  • the second node if the second node receives the at least one fourth frame sent by the first node before receiving the second frame, the second node according to the indication information in the at least one fourth frame or the second And confirming the frame, sending the first acknowledgement frame to the first node, where the second acknowledgement frame is an acknowledgement frame corresponding to the third frame sent by the first node to the third node.
  • the following is a case where the first node can send at least one fourth frame to the second node before the end time of the third frame, and the first node cannot reach the first frame before the end time of the third frame
  • the case where the two nodes transmit at least one fourth frame is separately described.
  • the first node can start sending the at least one fourth frame to the second node before the end time of the third frame, and the end time of the last fourth frame in the at least one fourth frame After the end time of the third frame, the first node sends the second frame to the second node, where the second frame is the last fourth frame, and the last fourth frame includes third indication information, where The third indication information is used to indicate that the second node sends the first acknowledgement frame to the first node in a time interval adjacent to a time interval corresponding to the second frame.
  • the first acknowledgement frame is an acknowledgment by the second node for part or all of the first frame and the at least one fourth frame
  • the second acknowledgement frame corresponding to the third frame is the first node
  • the time interval corresponding to the second frame is sent in an adjacent time interval.
  • the second node after receiving the second frame sent by the first node, the second node sends the first acknowledgement frame to the first node, where the second frame is the last one of the at least one fourth frame.
  • the last fourth frame includes third indication information, where the third indication information is used to indicate that the second node is in the adjacent time interval after the time interval corresponding to the second frame, to the first The node sends the first acknowledgement frame.
  • the ACK frame may include acknowledgement information for MSG_A1, MSG_A2, ..., MSG_Ai.
  • the first node can start sending at least one fourth frame to the second node before the end time of the third frame, and the end time of the last fourth frame in the at least one fourth frame is Before the end time of the third frame, the first node sends the second frame to the third node after receiving the third frame, where the second frame is the second acknowledgement frame, where the first acknowledgement The frame is sent by the second node in a time interval adjacent to a time interval corresponding to the second frame;
  • the first acknowledgement frame is an acknowledgement performed by the second node on the first frame and the at least one fourth frame, where the first acknowledgement frame is sent by the second node after receiving the second acknowledgement frame.
  • the first node sends at least one fourth frame to the second node after the first frame, and each of the at least one fourth frame includes the first indication information.
  • the first node sends the second acknowledgement frame to the third node after the third frame.
  • the second acknowledgment frame includes second indication information, where the second indication information is used to indicate that the third node prohibits sending the next node to the first node in a first time interval after the second acknowledgment frame. frame.
  • the ACK frame may include acknowledgement information for MSG_A1, MSG_A2, ..., MSG_Ai.
  • the first node can start sending the to the second node before the end time of the third frame One less fourth frame, and the end time of the last fourth frame in the at least one fourth frame is before the end time of the third frame, the first node sends the at least one fourth frame to the second
  • the node sends the second frame, the second frame is the last fourth frame, and the last fourth frame includes fourth indication information, where the fourth indication information is used to indicate that the second node corresponds to the third frame.
  • the first acknowledgement frame is transmitted to the first node within a time interval adjacent to the time interval.
  • the first acknowledgement frame is an acknowledgment by the second node for part or all of the first frame and the at least one fourth frame
  • the second acknowledgement frame corresponding to the third frame is the first node Transmitted within an adjacent time interval after the end time of the third frame.
  • the second node receives the second frame sent by the first node, the second frame is the last fourth frame, and the last fourth frame includes fourth indication information, where the fourth indication
  • the information is used to indicate that the second node sends the first acknowledgement frame to the first node within a time interval adjacent to an end time of the third frame.
  • the second node sends the first acknowledgement frame to the first node in an adjacent time interval after the end time of the third frame according to the fourth indication information.
  • the fourth indication information in the embodiment of the present invention is used to indicate that the second node sends the first acknowledgement frame to the first node within a time interval adjacent to an end time of the third frame.
  • the specific form of the fourth indication information should not be limited.
  • the fourth indication information may include an initial moment when the second node sends the first acknowledgement frame. That is, after receiving the last fourth frame, the second node sends the first acknowledgement frame to the first node at the initial moment indicated in the last fourth frame.
  • the fourth indication information may include a length of the third frame and ⁇ A1C1, where ⁇ A1C1 is a difference between an initial time of the first frame and an initial time of the third frame. That is, after receiving the last fourth frame, the second node determines the end time of the third frame according to the length of the third frame in the last fourth frame and ⁇ A1C1, and in the third The first acknowledgement frame is transmitted to the first node in an adjacent time interval after the end time of the frame.
  • the first confirmation frame and the second confirmation frame may be sent in the same time interval.
  • the first node if the first node cannot start sending at least one fourth frame to the second node before the end time of the third frame, the first node sends the third frame to the third frame after receiving the third frame.
  • the node sends the second frame, and the second frame is the second acknowledgement frame.
  • the first acknowledgement frame is sent by the second node in a time interval adjacent to a time interval corresponding to the second acknowledgement frame.
  • the interaction process between the first node, the second node, and the third node is similar to that of FIG. 8. To avoid repetition, no further details are provided herein.
  • the first node if the first node cannot start sending at least one fourth frame to the second node before the end time of the third frame; the first node sends the second node to the second node after the first frame
  • the second frame is an acknowledgment request frame or an acknowledgment request symbol, and is used to request the second node to send the first acknowledgment frame to the first node.
  • the first acknowledgement frame is sent by the second node in a time interval adjacent to a time interval corresponding to the third frame, where the second acknowledgement frame is the first node at the first Sent within the adjacent time interval after the end time of the three frames.
  • an "ACK Request Frame” may be transmitted before the end of MSG_C1 transmitted by C, that is, before ⁇ A1C1+C1_DURATION.
  • the "ACK request frame” should be transmitted before ⁇ A1C1+C1_DURATION to indicate that B sends an ACK frame to A after ⁇ A1C1+C1_DURATION+IFG1.
  • B After accepting the "ACK request frame", B sends an ACK frame to A after ⁇ A1C1+C1_DURATION+IFG1.
  • C After receiving MSG_C1, C receives the ACK of MSG_C1 sent by A.
  • the "ACK request frame” may only have a frame header of the physical frame (similar to the ACK frame), wherein the relevant field is carried, indicating that B sends an ACK frame to A after ⁇ A1C1+C1_DURATION+IFG1.
  • ACK request frame may be sent at any time before the start of the IFG1 after the MSG_A1 is transmitted.
  • bandwidth resource utilization is improved.
  • the "ACK request frame" in FIG. 13 may also be replaced with one or more "ACK request symbols”, which is used to indicate that B sends an ACK frame to A after receiving the "ACK request symbol”, or indicates B is sent after receiving the IFG1 after the "ACK request symbol”.
  • the first node can send at least one fourth frame to the second node before the third frame, and the end time of the last fourth frame in the at least one fourth frame is Before the end time of the third frame; the first node may also indicate, by the "ACK indicator" or "ACK request frame", the start time of the first node to send the first acknowledgement frame, and indicate that the third node may send the next frame. The starting moment.
  • the first node needs to determine whether to start sending at least one fourth frame to the second node before the end time of the third frame, and determine that the first node can be before the third frame. Sending a specific number of at least one fourth frame to the second node.
  • rule of judgment can be as follows:
  • MSG_A2 can continue to be transmitted until MSG_Ai.
  • the method of determining Ai can be as follows:
  • the Threshold1 and the Threshold2 may be a threshold value determined by the first node according to the information to be sent, and may be a threshold value of the configuration, which is not specifically limited in the embodiment of the present invention.
  • the scenario in which the first node receives the third frame sent by the third node in the process of transmitting the first frame is described above with reference to FIG. 7 to FIG. 14 .
  • a scenario in which the first node transmits the first frame to the second node in the process of transmitting the first frame will be described below with reference to FIG. 15 to FIG. 18.
  • FIG. 15 is a schematic flowchart of a method 200 for transmitting data according to an embodiment of the present invention.
  • the method 200 includes:
  • the first node receives the third frame sent by the third node in the FDCFTXOP.
  • the first node sends a first frame to the second node in the process of receiving the third frame, where the first frame includes first indication information.
  • the first indication information is used by the second node to determine, according to the first indication information, a first time interval, where the first time interval is used by the first node to receive the first acknowledgement frame corresponding to the first frame.
  • the time interval, the initial time corresponding to the first time interval is the same as the initial time of the second time interval, and the second time interval is a time interval for the first node to send the second confirmation frame corresponding to the third frame.
  • A Since A starts to transmit during C transmission, A can listen to and detect the frame header of the frame sent by C, and can determine the duration of the third frame, and determine the initial time of the first frame. The difference ⁇ C1A1 between the initial moments of the third frame.
  • A receives the MSG_C1 frame from C and parses C1_DURATION. After parsing the C1_DURATION, A starts transmitting the MSG_A1 frame before the end of the MSG_C1 frame sent by C, and carries the first indication information in the MSG_A1 frame.
  • the second indication information is used to indicate that the second node sends the first acknowledgement frame to the first node in an adjacent time interval of the first frame or in an adjacent time interval after the end time of the third frame, or The second indication information is used to indicate that the second node continues to receive the next frame sent by the first node after the end time of the current frame.
  • the third indication information is used to indicate that the second node continues to receive the next frame sent by the first node after receiving the current frame.
  • the fourth indication information is used to indicate that the second node sends the first acknowledgement frame to the first node within a time interval adjacent to the last fourth frame or the end time of the third frame.
  • the fifth indication information is used to indicate that the third node sends the next frame to the first node within a time interval adjacent to the second acknowledgement frame.
  • the first node receives the first acknowledgement frame sent by the second node according to the first indication information.
  • the first indication information includes a duration of the third frame, and a difference between an initial moment of the first frame and an initial moment of the third frame.
  • the first node determines, according to the first indication information, that the end time of the first frame is before the end time of the third frame, the first node is adjacent to the time interval after the end time of the third frame. Receiving the first acknowledgement frame sent by the second node.
  • the second node determines, according to the first indication information, that the end time of the first frame is before the end time of the third frame, the second node is adjacent to the time interval after the end time of the third frame.
  • the first acknowledgement frame is sent to the first node.
  • a sends an ACK frame to C to carry “ The ACK frame end indication 0" is used to indicate that C can send the next frame after receiving the ACK frame sent by A.
  • B After receiving the MSG_A1 frame sent by A, B may determine max ⁇ A1_DURATION+ ⁇ C1A1, C1_DURATION ⁇ according to the first indication information, that is, the larger of the two, and after max ⁇ A1_DURATION+ ⁇ C1A1, C1_DURATION ⁇ +IFG5 A sends an ACK frame, that is, sends an ACK frame to A after the frame whose MSG_A1 and MSG_C1 frames end later.
  • C receives the ACK frame sent by A after max ⁇ A1_DURATION+ ⁇ C1A1, C1_DURATION ⁇ +IFG5, that is, receives the ACK frame sent by A after the frame whose MSG_A1 and MSG_C1 frames end later, optionally, C carries according to the ACK frame.
  • the ACK frame end indication 0" it can be determined that after receiving the ACK frame sent by A, the next frame can be transmitted.
  • the first node determines, according to the first indication information, that the end time of the first frame is after the end time of the third frame, the first node is adjacent to the end time of the first frame. Receiving the first acknowledgement frame sent by the second node in the interval.
  • the second node determines, according to the first indication information, that the end time of the first frame is after the end time of the third frame, the second node is adjacent to the time interval after the end time of the first frame.
  • the first acknowledgement frame is sent to the first node.
  • the first indication information includes a duration ⁇ C1A1 between a duration of the third frame, an initial moment of the first frame, and an initial moment of the third frame, and second indication information.
  • the second indication information is used to indicate that the second node sends the first acknowledgement frame to the first node in a time interval adjacent to an end time of the first frame or an end time of the third frame. Or, the second indication information is used to indicate that the second node continues to receive the next frame sent by the first node after the end time of the current frame.
  • the first node determines that the end time of the first frame is after the end time of the third frame, the first node receives the second node to send the end time in an adjacent time interval after the end time of the first frame The first confirmation frame.
  • the second node determines, according to the first indication information, that the end time of the first frame is after the end time of the third frame, the second node is adjacent to the end time of the first frame. Within the interval, the first acknowledgement frame is sent to the first node.
  • the second indication information is set to 0. That is, after receiving the first frame, the B can determine that the first frame needs to be confirmed according to the second indication information, and further determine the current frame by using ⁇ C1A1 and C1_DURATION in the first indication information. After one frame, an ACK frame is sent to A.
  • A receives the MSG_C1 frame from C and parses C1_DURATION. After analyzing the C1_DURATION, A compares A1_DURATION+ ⁇ C1A1 and C1_DURATION. If the MSG_A1 frame is sent before the end of the MSG_C1 frame sent by the C, the first indication information is carried in the MSG_A1 frame, and the first indication information includes ⁇ C1A1, C1_DURATION, and second indication information.
  • B receives the MSG_A1 frame from A, and determines to transmit an ACK frame to A after IFG5 after MSG_A1 according to ⁇ C1A1, C1_DURATION and the second indication information.
  • the first node determines that the end time of the first frame is before the end time of the third frame, the first node receives the second node to send the end time in an adjacent time interval after the end time of the third frame The first confirmation frame.
  • the second node determines, according to the first indication information, that the end time of the first frame is before the end time of the third frame, the second node is adjacent to the time interval after the end time of the third frame.
  • the first acknowledgement frame is sent to the first node.
  • the second indication information is set to 0. That is, after receiving the first frame, the B can determine that the first frame needs to be confirmed according to the second indication information, and further determine the current frame by using ⁇ C1A1 and C1_DURATION in the first indication information. After three frames, an ACK frame is sent to A.
  • the second node after receiving the first frame, the second node can determine, according to the second indication information, whether the first frame is adjacent to the end time of the first frame or the end time of the third frame.
  • the first acknowledgement frame is sent to the first node within the time interval.
  • the duration and ⁇ C1A1 determine whether the first acknowledgement frame is transmitted to the first node in an adjacent time interval after the end time of the first frame or the end time after the end time of the third frame.
  • the first node determines that the end time of the first frame is after the end time of the third frame
  • the second node sends the first acknowledgement frame; or, if the first node determines that the end time of the first frame is before the end time of the third frame, the first node is adjacent after the end time of the third frame Receiving, by the second node, the first acknowledgement frame in the time interval.
  • the first node is configured according to the third frame Determining whether it is possible to start transmitting at least one fourth frame to the second node before the end time of the third frame; if the first node determines to start sending to the second node before the end time of the third frame The at least one fourth frame, the first node sends the at least one fourth frame to the second node after transmitting the first frame.
  • A according to the frame sent by the C that is intercepted by the interception, carries the indication information in the frame that is sent by itself, indicating how B is ACK, thereby avoiding the ACK sent by B and other transmission conflicts, and letting A uses resources as much as possible to send their data, improve bandwidth resource utilization, and avoid waste of resources.
  • the first node cannot send the at least one to the second node before the first acknowledgement frame
  • the first acknowledgement frame sent by the second node in a time interval adjacent to the end time of the third frame, where the second indication information is used in the second frame
  • the first acknowledgement frame is sent to the first node in a time interval indicating that the second node is adjacent after the end time of the third frame.
  • the first acknowledgement frame is transmitted to the first node in a time interval adjacent to the end time of the three frames.
  • the second node judges whether the "second indication information" is 0, and if it is 0, the second node transmits an ACK frame after the IFG5 after the end of C1_DURATION according to the judgment result.
  • the first node can send the at least one fourth frame to the second node before the third frame, after the first node sends the last fourth frame or after receiving the third frame Receiving the first acknowledgement frame sent by the second node in an adjacent time interval, where the second indication information in the first frame is used to indicate that the second node continues to receive the first frame after receiving the current frame a next frame sent by a node, where each fourth frame except the last fourth frame of the at least one fourth frame includes third indication information, where the third indication information is used to indicate that the second node is receiving After the current frame is completed, the next frame sent by the first node is continued to be received, where the fourth fourth frame includes fourth indication information, where the fourth indication information is used to indicate that the second node receives the last fourth frame. Or, in the time interval adjacent to the end time of the third frame, the first acknowledgement frame is sent to the first node.
  • the second node after receiving the first frame, receives at least one fourth frame sent by the first node, and each fourth of the at least one fourth frame except the last fourth frame.
  • the third indication information is included in the frame, where the third indication information is used to indicate that the second node continues to receive the next frame sent by the first node after receiving the current frame, where the fourth fourth frame includes the fourth indication information.
  • the fourth indication information is used to indicate that the second node sends the first acknowledgement frame to the first node within an adjacent time interval of the last fourth frame or the third frame end time.
  • the second node sends the first node to the first node in a time interval adjacent to the end time of the third frame.
  • An acknowledgement frame or, if the end time of the last fourth frame is after the end time of the third frame, the second node is in the adjacent time interval after receiving the last fourth frame, A node sends the first acknowledgement frame.
  • A1_DURATION+ ⁇ C1A1 ⁇ C1_DURATION it is determined that the at least one fourth frame can be sent to the second node before the MSG_C1, and if so, the next frame to be transmitted; until the second indication information of the last MSG_Ai frame is 0. ".
  • the method 200 further includes:
  • the first node sends the second acknowledgement frame to the third node according to the first indication information, where the second acknowledgement frame
  • the fifth indication information is used to indicate that the third node sends the next frame to the first node after the second acknowledgement frame.
  • the second acknowledgement frame and the start time of the first acknowledgement frame are the same, which can effectively save time domain resources and improve bandwidth resource utilization.
  • FIG. 19 is a schematic flowchart of a method 300 for transmitting data according to an embodiment of the present invention.
  • the method 300 includes:
  • the first node acquires an acknowledgement frame transmission information.
  • the acknowledgment frame transmission information includes a start time of the first time interval and a start time of the second time interval, where the first time interval is used by the first node to receive the first frame corresponding to the second frame a time interval of the acknowledgment frame, where the second time interval is used by the first node to send a second acknowledgment frame corresponding to the third frame to the third node; or the acknowledgment frame transmission information includes the second node The frequency band information and the frequency band information used by the third node.
  • the first node acquires the acknowledgement frame transmission information by negotiating with the second node and the third node in establishing a communication link; or the first node receives the media sent by the domain master node DM.
  • a Media Access Plan (MAP) frame the MAP frame including the acknowledgement frame transmission information.
  • the first node sends the first frame to the second node on the FDCFTXOP.
  • the first node receives the third frame sent by the third node on the FDCFTXOP.
  • the first node receives the first acknowledgement frame and sends the second acknowledgement frame according to the acknowledgement frame transmission information.
  • the acknowledgement frame transmission information includes a start time of the first time interval and a start time of the second time interval, and the start time of the first time interval is the same as the start time of the second time interval. In addition, it ensures that when an ACK frame is sent, it will not conflict with other transmissions, and the bandwidth resource utilization can be improved.
  • the first node receives the first acknowledgement frame and transmits the second acknowledgement frame at an initial moment indicated by the acknowledgement frame transmission information.
  • either C or A may not send the MSG frame, or only one of them may send the MSG frame. Regardless of whether the C or A sends an MSG frame, the transmission time of this agreed ACK frame is objective.
  • the initial time of the first acknowledgement frame and the initial time of the second acknowledgement frame in the acknowledgement frame transmission information may all be predetermined in one FDCFTXOP, or only some resources in one FDCFTXOP may be determined in advance.
  • the first frame or the first acknowledgement frame includes first indication information, where the first indication information is used to indicate a maximum duration of the next frame sent by the third node to the first node after sending the third frame.
  • the first indication information is used to indicate an initial time interval of a time interval corresponding to the acknowledgement frame corresponding to the next frame sent by the third node to the first node after the third frame is sent.
  • A should carry "maximum frame length of the next frame allowed for C transmission", and the frame length (C2_DURATION) of MSG_C2 of the next frame transmitted by C should be smaller than Or equal to the "maximum frame length of the next frame allowed by C.”
  • B and C listen to the frame MSG_Ai sent by A.
  • A carries "maximum frame length of the next frame allowed for C transmission"
  • the frame length of MSG_C2 of the next frame transmitted by C ( C2_DURATION) should Less than or equal to the "maximum frame length of the next frame allowed for C transmission”.
  • B and C listen for the ACK frame sent by A (confirmation for the MSG_C1 frame).
  • a and B respectively acknowledge the received frame (MSG_C2, MSG_A2) and transmit an ACK frame after "maximum frame length of the next frame allowed for C transmission" + IFG6. .
  • the frame length should be set within the allowable range.
  • the "maximum frame length of the next frame allowed for C transmission" is acquired in many ways. For example, A determines a value not greater than the duration according to the duration of the frame transmitted by itself, and the like.
  • the embodiment of the invention is not specifically limited.
  • the first node can avoid collision when receiving the acknowledgement frame of the second node and the data frame of the third node at the same time.
  • the acknowledgement frame transmission information includes a first frequency band corresponding to the data frame and a second frequency band corresponding to the acknowledgement frame, where the first frequency band and the second frequency band do not overlap.
  • the first node receives the first acknowledgement frame and sends the second acknowledgement frame on the second frequency band, and the first node sends the first frame to the second node by using the first frequency band, and Receiving the third frame sent by the third node by using the first frequency band.
  • the data frame and the ACK frame are sent through two independent “channels”, thereby preventing the ACK sent by the B from colliding with other transmissions, and letting A use the resource to transmit its data as much as possible, thereby avoiding waste of resources, and additionally Can improve bandwidth resource utilization.
  • a and C can arbitrarily arrange transmission of their MSG frames, and can continuously transmit (interframe space IFG is added between frames).
  • the data frame corresponds to the second modulation mode
  • the confirmation frame corresponds to the first modulation mode
  • the first modulation mode may include an On-Off Keying (OOK) modulation mode and a Multi-Pulse Position Modulation (Multi-Pulse Position Modulation, MPPM) modulation method
  • the second modulation method may include asymmetric limiting optical orthogonal frequency division multiplexing (ACO-OFDM) modulation method or DC offset optical orthogonal frequency division multiplexing (DCO-OFDM) modulation method. and many more.
  • the acknowledgement frame transmission information includes a first frequency band used by the second node to send the first acknowledgement frame, and a third frequency band used by the third node to send the third frame, the first The frequency band and the second frequency band do not overlap.
  • the first node receives the first acknowledgement frame on the first frequency band, and the first node sends the second acknowledgement frame on the first frequency band and the second frequency band.
  • the first node can receive the data frame and the acknowledgement frame at the same time. Decode normally and avoid transmission conflicts.
  • a and C can simultaneously transmit their MSG frames and continuously transmit subsequent frames (interframe spacing IFG is added between frames).
  • the first node before the first node sends the first frame to the second node on the FDCFTXOP, before the first node sends the first frame, it is determined whether the receiving is completed but not confirmed. At least one second frame of the three nodes; if the at least one second frame is present, the confirmation information corresponding to some or all of the second frames in the at least one second frame is added to the first frame.
  • A determines whether there is a frame from C that is received but not ACKed, and if so, carries the corresponding ACK information in the frame header of the MSG frame to be transmitted.
  • the first node after the third frame, receives a plurality of consecutive first data frames sent by the third node, where the last one of the consecutive plurality of first data frames includes the second indication information.
  • the second indication information is used to indicate that the current frame of the first node is the last data frame.
  • the first node determines, according to the second indication information, that the current frame is the last data frame, and sends at least one acknowledgement to the third node.
  • a frame, the at least one acknowledgement frame is an acknowledgement by the first node to a data frame from the third node that is not acknowledged; the first node sends a plurality of consecutive seconds to the second node after the first frame Data Frame.
  • A ends the transmission first, it should be indicated as “last frame” in the last frame, and the data frame from C that is subsequently received is acknowledged by transmitting an ACK frame. That is, C can indicate "last frame” in the last frame, so that A determines how to ACK.
  • A can put acknowledgment information for MSG_C5 and MSG_C6 in one ACK frame.
  • the second node corresponds to a first modulation mode
  • the third node corresponds to a second modulation mode
  • the first modulation mode may include an On-Off Keying (OOK) modulation mode and a multi-pulse position (Multi -Pulse Position Modulation, MPPM) modulation mode
  • the second modulation mode may include asymmetric limiting optical orthogonal frequency division multiplexing (ACO-OFDM) modulation mode, DC bias optical-orthogonal frequency division multiplexing ( DCO-OFDM) modulation method and the like.
  • ACO-OFDM optical orthogonal frequency division multiplexing
  • DCO-OFDM DC bias optical-orthogonal frequency division multiplexing
  • optical wireless communication such as visible light communication or infrared communication
  • the optical wireless communication is by intensity modulation.
  • the visible light band or the infrared frequency band is used, only the change in light intensity is used to transmit data.
  • B and C may be partitioned from the perspective of modulation bandwidth on the basis of simultaneous use of infrared communication or simultaneous use of visible light communication.
  • the modulation bandwidth of a visible LED may be 10 MHz, and the frequency domain can be divided into two parts: 0-1 MHz and 1 MHz-10 MHz.
  • Actual B and C are both visible light communication.
  • the acknowledgment mode of the frame in the FDCFTXOP may be set to a second acknowledgment frame sent by the first node to the third node for implicitly indicating that the second node sends the first acknowledgment frame to the first node.
  • the first node sends the first frame to the second node and receives the third frame sent by the third node in the full-duplex contention-free transmission opportunity FDCFTXOP; the first node sends the first frame after the first frame is sent The third node sends a second acknowledgement frame, where the second acknowledgement frame is an acknowledgement of the third frame by the first node; after the second node sends the second acknowledgement frame, the first node receives the second acknowledgement frame.
  • the first acknowledgement frame, the first acknowledgement frame is a confirmation of the first frame by the first node.
  • A sends a first frame to B, and receives a third frame sent by C. After transmitting the first frame, sends a second acknowledgement frame to the C. The A sends the second acknowledgement. After the frame, the first acknowledgement frame sent by the second node is received.
  • the second acknowledgment frame sent by A to C itself can be used to indicate that B confirms the first frame within a time interval adjacent to the second acknowledgment frame.
  • the method further includes:
  • the first node determines whether the third frame sent by the third node has been received, and if the first node has received the third frame sent by the third node, the first node corresponds to the first frame. Sending a second acknowledgement frame to the third node in a time interval adjacent to the time interval; or, if the first node does not receive the third frame sent by the third node, the first node corresponds to the third frame A second acknowledgement frame is sent to the third node in an adjacent time interval after the time interval.
  • Figure 25 is a schematic block diagram of an apparatus for transmitting data according to an embodiment of the present invention.
  • An embodiment of the present invention provides a device for transmitting data.
  • the device includes a transceiver unit 410, and the transceiver unit 410 is configured to:
  • the first indication information is used to indicate that the second node sends the first acknowledgement frame corresponding to the first frame to the device after receiving the second frame.
  • the first acknowledgement frame sent by the second node is received.
  • the third frame sent by the third node is not received
  • the transceiver unit 410 is specifically configured to:
  • the second frame is sent to the third node, where the second frame includes second indication information, where the second indication information is used to indicate that the third node is in a time interval corresponding to the second frame.
  • the next frame is prohibited from being sent to the device, where the first acknowledgement frame is sent by the second node in a time interval adjacent to the time interval corresponding to the second frame;
  • the second frame is sent to the second node, where the second frame is an acknowledgment request frame or an acknowledgment request symbol, and is used to request the second node to send the first acknowledgment frame to the device, where
  • the first acknowledgement frame is sent by the second node in a time interval adjacent to the acknowledgment request frame or the time interval corresponding to the acknowledgment request symbol.
  • the device can receive the third frame sent by the third node;
  • the transceiver unit 410 is specifically configured to:
  • the apparatus determines that the end time of the first frame is after the end time of the third frame, after transmitting the first frame, the apparatus sends the second frame to the third node, where the second frame is the third frame a second acknowledgement frame corresponding to the frame, where the first acknowledgement frame is sent by the second node in a time interval adjacent to a time interval corresponding to the second frame;
  • the apparatus determines that the end time of the first frame is before the end time of the third frame, after transmitting the third frame, the apparatus sends the second frame to the third node, where the second frame is the third frame. And a second acknowledgement frame corresponding to the frame, where the first acknowledgement frame is sent by the second node in a time interval adjacent to a time interval corresponding to the second frame.
  • the device is in the time interval corresponding to the first frame, the third frame sent by the third node is received, and the end time of the first frame is before the end time of the third frame;
  • the device Before the device sends the second frame, the device further includes a processing unit, the processing unit is configured to:
  • the apparatus determines that the at least one fourth frame can be started to be sent to the second node before the end time of the third frame, the apparatus sends the at least one fourth frame to the second node after transmitting the first frame. .
  • the device can start sending the at least one fourth frame to the second node before the end time of the third frame, and the end time of the last fourth frame in the at least one fourth frame is After the end time of the third frame,
  • the transceiver unit 410 is specifically configured to:
  • the second frame is the last fourth frame
  • the last fourth frame includes third indication information
  • the third indication information is used to indicate that the second node is Sending the first acknowledgement frame to the apparatus in the adjacent time interval after the time interval corresponding to the second frame
  • the first acknowledgement frame is the second node in the first frame and the at least one fourth frame
  • the second acknowledgement frame corresponding to the third frame is sent by the device in a time interval adjacent to the time interval corresponding to the second frame.
  • the device can start sending the at least one fourth frame to the second node before the end time of the third frame, and the end time of the last fourth frame in the at least one fourth frame is Before the end of the third frame,
  • the transceiver unit 410 is specifically configured to:
  • the second frame is sent to the second node, where the second frame is the last fourth frame, and the last fourth frame includes fourth indication information, the fourth indication information And indicating, in the time interval that the second node is adjacent to the time interval corresponding to the third frame, sending the first acknowledgement frame to the device, where the first acknowledgement frame is the second node and the first frame and Confirming part or all of the at least one fourth frame, and the second acknowledgement frame corresponding to the third frame is sent by the device in a time interval adjacent to an end time of the third frame.
  • the device is unable to start sending the at least one fourth frame to the second node before the end time of the third frame;
  • the transceiver unit 410 is specifically configured to:
  • the second frame is sent to the third node, where the second frame is the second acknowledgement frame, where the first acknowledgement frame is that the second node corresponds to the second acknowledgement frame.
  • the time interval is sent after the adjacent time interval;
  • the second frame is sent to the second node, where the second frame is an acknowledgment request frame or an acknowledgment request symbol, and is used to request the second node to send the first acknowledgment frame to the device, where
  • the first acknowledgement frame is sent by the second node in a time interval adjacent to a time interval corresponding to the third frame, where the second acknowledgement frame is adjacent to the device after the end time of the third frame Sent within the time interval.
  • An embodiment of the present invention provides a device for transmitting data.
  • the device includes a transceiver unit 410, and the transceiver unit 410 is configured to:
  • the first indication information is used to indicate that the apparatus sends the first acknowledgement frame corresponding to the first frame to the first node after receiving the second frame.
  • the first acknowledgement frame is sent to the first node.
  • the transceiver unit 410 is specifically configured to:
  • the device is sent in a time interval adjacent to the time interval corresponding to the confirmation request frame or the confirmation request symbol, or the first confirmation frame is adjacent to the second node after the time interval corresponding to the third frame.
  • the third frame is sent by the third node to the first node;
  • the second frame sent by the first node to the third node, where the second frame is a second acknowledgement frame, where the first acknowledgement frame is an adjacent time after the time interval corresponding to the second acknowledgement frame of the device Sent within the interval.
  • the transceiver unit 410 is specifically configured to:
  • the transceiver unit 410 is specifically configured to:
  • the last fourth frame includes third indication information, where the third indication information And indicating, in the time interval adjacent to the time interval corresponding to the second frame, the first acknowledgement frame sent by the device to the first node, where the first acknowledgement frame is the first frame and the at least Confirmation of part or all of a fourth frame;
  • the first acknowledgement frame is an acknowledgement by the device for part or all of the first frame and the at least one fourth frame
  • the first acknowledgement The frame is sent by the device in a time interval adjacent to a time interval corresponding to the second acknowledgement frame
  • the device receives the second frame sent by the first node, the second frame is the last fourth frame, and the last fourth frame includes fourth indication information, where the fourth indication information is used to indicate the device Transmitting the first acknowledgement frame to the first node in an adjacent time interval after the end time of the third frame, where the first acknowledgement frame is in the first frame and the at least one fourth frame of the apparatus Confirmation of some or all of them.
  • An embodiment of the present invention provides a device for transmitting data.
  • the device includes a transceiver unit 410, and the transceiver unit 410 is configured to:
  • the first indication information is used by the second node to determine, according to the first indication information, a first time interval, where the first time interval is a time interval for the device to receive the first acknowledgement frame corresponding to the first frame.
  • the initial time corresponding to the first time interval is the same as the initial time of the second time interval, and the second time interval is a time interval for the device to send the second confirmation frame corresponding to the third frame;
  • the first indication information includes a duration of the third frame, and a difference between an initial moment of the first frame and an initial moment of the third frame;
  • the transceiver unit 410 is specifically configured to:
  • the device determines, according to the first indication information, that the end time of the first frame is before the end time of the third frame, and receives the second node sent in an adjacent time interval after the end time of the third frame The first confirmation frame;
  • the device determines, according to the first indication information, that the end time of the first frame is after the end time of the third frame, and receives the second node sent in an adjacent time interval after the end time of the first frame The first confirmation frame.
  • the first indication information includes a duration of the third frame, a difference between an initial moment of the first frame, and an initial moment of the third frame, and second indication information, where the second indication information is used by And indicating, in the time interval that the second node is adjacent to the end time of the first frame or after the end time of the third frame, sending the first acknowledgement frame to the device, or the second indication information is used to: Instructing the second node to continue to receive the next frame sent by the device after the end time of the current frame;
  • the transceiver unit 410 is specifically configured to:
  • the apparatus determines that the end time of the first frame is after the end time of the third frame, the apparatus receives the second acknowledgement frame in the adjacent time interval after the end time of the first frame ;
  • the apparatus determines that the end time of the first frame is before the end time of the third frame, the apparatus receives the second acknowledgement frame in the adjacent time interval after the end time of the third frame ;
  • the apparatus determines that the end time of the first frame is before the end time of the third frame, before receiving the first acknowledgement frame sent by the second node, the apparatus further includes a processing unit, where the processing unit is configured to:
  • the apparatus determines that the at least one fourth frame can be started to be sent to the second node before the end time of the third frame, the apparatus sends the at least one fourth frame to the second node after transmitting the first frame. .
  • the end time of the first frame is before the end time of the third frame
  • the transceiver unit 410 is specifically configured to:
  • the device If the device is unable to send the at least one fourth frame to the second node before the first acknowledgement frame, receiving the first node sent by the second node in an adjacent time interval after the end time of the third frame An acknowledgement frame, wherein the second indication information in the first frame is used to indicate that the second node sends the first acknowledgement frame to the device within a time interval adjacent to an end time of the third frame;
  • the apparatus is capable of transmitting the at least one fourth frame to the second node before the third frame, receiving the first time interval after transmitting the last fourth frame or after receiving the third frame
  • the first acknowledgement frame sent by the second node where the second indication information in the first frame is used to indicate that the second node continues to receive the next frame sent by the device after receiving the current frame
  • the at least one The third indication information is included in each of the four frames except the last fourth frame, where the third indication information is used to indicate that the second node succeeds after receiving the current frame.
  • the last fourth frame includes fourth indication information, where the fourth indication information is used to indicate that the second node receives the last fourth frame or the third frame.
  • the first confirmation frame is transmitted to the device within an adjacent time interval after the end time.
  • the second acknowledgement frame includes fifth indication information, where the fifth indication information is used to indicate that the third node sends the next frame to the device within a time interval adjacent to the second acknowledgement frame after receiving the second acknowledgement frame. .
  • An embodiment of the present invention provides a device for transmitting data.
  • the device includes a transceiver unit 410, and the transceiver unit 410 is configured to:
  • the first indication information is used by the device to determine, according to the first indication information, a first time interval, where the first time interval is a time interval for the first node to receive the first confirmation frame corresponding to the first frame,
  • the initial time corresponding to the first time interval is the same as the initial time of the second time interval, and the second time interval is a time interval for the first node to send the second confirmation frame corresponding to the third frame;
  • the first indication information includes a duration of the third frame, and a difference between an initial moment of the first frame and an initial moment of the third frame;
  • the transceiver unit 410 is specifically configured to:
  • the device determines, according to the first indication information, that the end time of the first frame is before the end time of the third frame, and sends the first node to the first node in a time interval adjacent to the end time of the third frame An acknowledgement frame;
  • the device determines, according to the first indication information, that the end time of the first frame is after the end time of the third frame, and sends the first node to the first node in a time interval adjacent to the end time of the first frame.
  • a confirmation frame If the device determines, according to the first indication information, that the end time of the first frame is after the end time of the third frame, and sends the first node to the first node in a time interval adjacent to the end time of the first frame.
  • the first indication information includes a duration of the third frame, a difference between an initial moment of the first frame, and an initial moment of the third frame, and second indication information, where the second indication The information is used to indicate that the apparatus sends the first acknowledgement frame to the first node in a time interval adjacent to an end time of the first frame or an end time of the third frame;
  • the transceiver unit 410 is specifically configured to:
  • the device determines, according to the first indication information, that the end time of the first frame is after the end time of the third frame, and sends the current node to the first node in an adjacent time interval after the end time of the first frame.
  • First confirmation frame
  • the device determines, according to the first indication information, that the end time of the first frame is before the end time of the third frame, and sends the first node to the first node in a time interval adjacent to the end time of the third frame A confirmation frame.
  • the first indication information includes a duration of the third frame, a difference between an initial moment of the first frame, and an initial moment of the third frame, and second indication information, where the second indication information is used by Instructing the device to continue to receive the next frame sent by the first node after the current frame;
  • the transceiver unit 410 Before transmitting the first acknowledgement frame to the first node, the transceiver unit 410 is further configured to:
  • the device After receiving the first frame, the device receives at least one fourth frame sent by the first node, and includes a third indication in each fourth frame except the last fourth frame in the at least one fourth frame. Information, the third indication information is used to indicate that the apparatus continues to receive the next frame sent by the first node after receiving the current frame, where the last fourth frame includes fourth indication information, where the fourth indication information is used. Instructing the device to send the first acknowledgement frame to the first node in a time interval adjacent to an end time of the last fourth frame or an end time of the third frame;
  • the first acknowledgement frame is sent to the first node in a time interval adjacent to the end time of the third frame
  • the first acknowledgement frame is sent to the first node in an adjacent time interval after receiving the last fourth frame.
  • An embodiment of the present invention provides a device for transmitting data. As shown in FIG. 26, the device includes:
  • the obtaining unit 510 is configured to obtain acknowledgement frame transmission information.
  • the acknowledgment frame transmission information includes a start time of the first time interval and a start time of the second time interval, where the first time interval is used by the device to receive the first acknowledgement corresponding to the first frame sent by the second node. a time interval of the frame, where the second time interval is a time interval for the device to send the second acknowledgement frame corresponding to the third frame to the third node; or the acknowledgement frame transmission information includes the frequency band information used by the second node Band information used by the third node;
  • the transceiver unit 520 is configured to:
  • the acknowledgement frame transmission information includes a start time of the first time interval and a start time of the second time interval, where the start time of the first time interval is the same as the start time of the second time interval;
  • the transceiver unit 520 is specifically configured to:
  • the first acknowledgement frame is received and the second acknowledgement frame is transmitted.
  • the first frame or the first acknowledgement frame includes first indication information, where the first indication information is used to indicate a maximum duration of the next frame sent by the third node to the device after sending the third frame.
  • the first indication information is used to indicate an initial time interval of a time interval corresponding to the acknowledgement frame corresponding to the next frame sent by the third node to the device after the third frame is sent.
  • the acknowledgement frame transmission information includes a first frequency band corresponding to the data frame and a second frequency band corresponding to the acknowledgement frame, where the first frequency band and the second frequency band do not overlap;
  • the transceiver unit 520 is specifically configured to:
  • the apparatus sends the first frame to the second node by using the first frequency band, and receiving the third node by using the first frequency band The third frame sent.
  • the acknowledgement frame transmission information includes a first frequency band used by the second node to send the first acknowledgement frame, and a third frequency band used by the third node to send the third frame, the first The frequency band and the second frequency band do not overlap;
  • the transceiver unit 520 is specifically configured to:
  • the second acknowledgement frame is transmitted on the first frequency band and the second frequency band.
  • the device before the device sends the first frame to the second node on the FDCFTXOP, the device further includes:
  • a processing unit configured to determine, before sending the first frame, whether there is at least one second frame from the third node that is received but not confirmed;
  • the confirmation information corresponding to some or all of the second frames in the at least one second frame is added to the first frame.
  • the transceiver unit 520 is specifically configured to:
  • the second indication information is included in the last data frame in the frame, where the second indication information is used to indicate that the current frame of the device is the last data frame;
  • frame intervals are included between data frames.
  • the first frequency band corresponds to a common baseband modulation mode
  • the second frequency band corresponds to a baseband multi-carrier modulation mode
  • the common baseband modulation mode includes an OOK modulation mode or an MPPM modulation mode
  • the baseband multi-carrier modulation mode includes ACO-OFDM modulation. Mode or DCO-OFDM modulation mode.
  • the obtaining unit 510 is specifically configured to:
  • the confirmation frame transmission information is obtained by negotiating with the second node and the third node; or the device receives the MAP frame sent by the DM, and the MAP frame includes the acknowledgement frame transmission information.
  • An embodiment of the present invention provides a device for transmitting data. As shown in FIG. 26, the device includes:
  • the obtaining unit 510 is configured to obtain acknowledgement frame transmission information, where
  • the acknowledgment frame transmission information includes a start time of the first time interval and a start time of the second time interval, where the first time interval is a first acknowledgement corresponding to the first frame sent by the first node by the receiving device. a time interval of the frame, where the second time interval is used by the first node to send a second acknowledgement frame corresponding to the third frame to the third node; or the acknowledgement frame transmission information includes frequency band information used by the device Band information used by the third node;
  • the transceiver unit 520 is configured to:
  • the acknowledgement frame transmission information includes a start time of the first acknowledgement frame, where an initial time of the first acknowledgement frame is the same as an initial time of the second acknowledgement frame, where the second acknowledgement frame is the first node Confirmation of the third frame sent by the third node;
  • the transceiver unit 520 is specifically configured to:
  • the first acknowledgement frame is transmitted to the first node at an initial time indicated by the acknowledgement frame transmission information.
  • the first frame or the first acknowledgement frame further includes first indication information, where the first indication information is used to indicate the next frame sent by the third node to the first node after sending the third frame.
  • the first indication information is used to indicate an initial time interval of a time interval corresponding to the acknowledgement frame corresponding to the next frame sent by the third node to the first node after transmitting the third frame.
  • the acknowledgement frame transmission information includes a first frequency band corresponding to the data frame and a second frequency band corresponding to the acknowledgement frame, where the first frequency band and the second frequency band do not overlap;
  • the transceiver unit 520 is specifically configured to:
  • the acknowledgement frame transmission information includes: a first frequency band used by the apparatus to send the first acknowledgement frame, and a third frequency band used by the third node to send the third frequency frame, the first frequency band and The second frequency band used by the third node does not overlap;
  • the transceiver unit 520 is specifically configured to:
  • the first frequency band corresponds to a common baseband modulation mode
  • the second frequency band corresponds to a baseband multi-carrier modulation mode
  • the common baseband modulation mode includes an OOK modulation mode or an MPPM modulation mode
  • the baseband multi-carrier modulation mode includes ACO-OFDM modulation. Mode or DCO-OFDM modulation mode.
  • the obtaining unit 510 is specifically configured to:
  • the confirmation frame transmission information is obtained by negotiating with the first node and the third node; or the device receives the MAP frame sent by the DM, and the MAP frame includes the confirmation frame transmission information.
  • the transceiver unit 410 in FIG. 25 may be implemented by a transceiver
  • the obtaining unit 510 in FIG. 26 may be implemented by a transceiver or a processor
  • the transceiver unit 520 may be implemented by a processor.
  • apparatus 600 can include a processor 610, a transceiver 620, and a memory 630.
  • the memory 630 can be used to store indication information, and can also be used to store code, instructions, and the like executed by the processor 610.
  • a communication connection is implemented between the processor 610, the transceiver 620, and the memory 630 by, for example, a bus or the like.
  • the processor may be an integrated circuit chip with signal processing capabilities.
  • each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software.
  • the processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programming logic devices, transistor logic devices, discrete hardware components.
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiment of the present invention may be directly implemented as a hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.
  • the memory 630 may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory.
  • the volatile memory can be a Random Access Memory (RAM) that acts as an external cache.
  • RAM Random Access Memory
  • many forms of RAM are available, for example, static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM).
  • SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • DDR SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • Synchronous Connection Dynamic Random Access Memory Synchronous Connection Dynamic Random Access Memory
  • SLDRAM Synchronous Connection Dynamic Random Access Memory
  • DR RAM direct memory bus random access memory
  • the term "and/or" in the embodiment of the present invention is merely an association relationship describing an associated object, indicating that there may be three relationships. Specifically, A and/or B may indicate that A exists separately, and A and B exist simultaneously, and B cases exist alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • first, second, third, etc. may be used to describe various messages, requests, and terminals in embodiments of the present invention, but such messages, requests, and terminals should not be limited to these terms. These terms are only used to distinguish messages, requests, and terminals from one another.
  • the words “if” or “if” as used herein may be interpreted as “when” or “when” or “in response to determining” or “in response to detecting” ".
  • the phrase “if determined” or “if detected (conditions or events stated)” may be interpreted as “when determined” or “in response to determination” or “when detected (stated condition or event) "Time” or “in response to a test (condition or event stated)”.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
  • each functional unit in the embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the technical solution of the embodiments of the present invention may be embodied in the form of a software product stored in a storage medium.
  • the instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method of the embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), A variety of media that can store program code, such as random access memory (RAM), disk, or optical disk.

Abstract

本发明实施例,提供了一种传输数据的方法和装置。该方法包括:第一节点在全双工无竞争的传输机会中向第二节点发送第一帧,该第一帧包括第一指示信息;该第一指示信息用于指示该第二节点在当前帧之后继续接收该第一节点发送的下一帧,直至接收完第二帧之后,向该第一节点发送该第一帧对应的第一确认帧;该第一节点发送该第二帧;该第一节点在发送完该第二帧之后,接收该第二节点发送的该第一确认帧。本发明实施例中,在节点与不同的两个节点的同时进行通信时,避免确认帧的传输发生冲突,并提高带宽资源利用率,进而提高网络吞吐量。

Description

传输数据的方法和装置 技术领域
本发明实施例涉及光无线通信领域,并且更具体地,涉及传输数据的方法和装置。
背景技术
光无线通信(Optical Wireless Communication,OWC)是指所有不使用线缆(如,光纤)的光学通信,可见光通信(Visible Light Communication,VLC)、红外通信等都是光无线通信中的通信方式。VLC指的是利用可见光频谱(380nm-780nm)进行通信的方式。其频谱资源充足,且都是非授权频段,可以免费使用;而且绿色环保,无电磁污染,可用于电磁干扰敏感环境,对人体安全;此外安全性较好,由于VLC的传输只能局限在光线能照射到的地方,因而VLC具有较强的保密安全性。近来来,VLC通信获得了学术界和工业界越来越多的关注,可以预期,VLC将成为未来一种广泛应用的通信技术。
对于光无线通信,发送器可以采用白光可见光LED或者红外(infrared radio,IR)LED发送,接收器可以采用光电探测器(Photodetector,PD)接收信号,PD根据可接收的光波长不同,可以分为多种类型,例如只能检测红外线的IR PD、只能检测可见光的VL PD以及红外线和可见光都能检测的PD。因此,在光无线通信中,可以支持全双工传输,且不存在自干扰。例如,如果节点A采用LED在可见光频段发送数据,并采用IR PD进行接收,节点B和节点C采用LED在红外频段发送数据,采用VL PD进行接收,当节点C向节点A发送数据,节点A采用IR PD进行接收的同时可以向节点B发送数据。显然,节点A需要同时收发数据,因此处于全双工模式,并且,这种全双工传输不存在自干扰。对于节点A来说,其发送的信号在可见光频段,而它的PD只能接收红外频段的信号,因此节点A发送的信号不会被自己的接收机PD所接收到,因此节点A不存在自干扰。另外,由于节点A向节点B之间采用可见光通信频段发送,而节点C向节点A采用红外频段发送,则节点C所发送的红外频段的信号不会对节点B接收来自节点A的可见光频段的信号造成干扰。
在当前常见的半双工通信系统中,收发双方一般是按照时间先后顺序发送数据帧或确认帧,例如,B在接收到A发送的消息(MSG)帧之后,在经过一个帧间隔(ACK Inter-frame Gap,AIFG)后,B向A发送确认(Acknowledgement,ACK)帧。对于光无线通信,半双工的确认机制无法解决全双工场景下双方同时发送时所出现的一些问题。
例如,如图1所示,假定A和C在全双工无竞争传输机会(Full Duplex Contention-Free Transmission Opportunity,FDCFTXOP)开始后,同时或基本同时发送其MSG帧,此时,A和C无法在发送自己的MSG帧之前,知道对方将要发送的MSG帧的长度。如果C的MSG帧较长,A的MSG帧较短,如果B在收完A的MSG帧之后就反馈ACK,可能会和C正在传输的MSG帧发送冲突,造成A无法正确接收。
发明内容
本发明实施例,提供了一种传输数据的方法和装置,在节点与不同的两个节点的同时进行通信时,避免确认帧的传输发生冲突,并提高带宽资源利用率,进而提高网络吞吐量。
第一方面,提供了一种传输数据的方法,所述方法包括:
第一节点在全双工无竞争的传输机会FDCFTXOP中向第二节点发送第一帧,所述第一帧包括第一指示信息;其中,所述第一指示信息用于指示所述第二节点在接收完第二帧之后,向所述第一节点发送所述第一帧对应的第一确认帧;
所述第一节点发送所述第二帧;
所述第一节点在发送完所述第二帧之后,接收所述第二节点发送的所述第一确认帧。
本发明实施例中,在节点与不同的两个节点的同时进行通信时,避免确认帧的传输发生冲突,并提高带宽资源利用率,进而提高网络吞吐量。
在一些可能的实现方式中,若所述第一节点在所述第一帧对应的时间区间内,未接收到第三节点发送的第三帧;
所述第一节点发送所述第二帧,包括:
所述第一节点在发送所述第一帧之后,向所述第三节点发送所述第二帧,所述第二帧包括第二指示信息,所述第二指示信息用于指示所述第三节点在所述第二帧对应的时间区间之后相邻的时间区间内,禁止向所述第一节点发送下一帧,其中,所述第一确认帧为所述第二节点在所述第二帧对应的时间区间之后相邻的时间区间内发送的;
或者,
所述第一节点在发送所述第一帧之后,向所述第二节点发送所述第二帧,所述第二帧为确认请求帧或者确认请求符号,用于请求所述第二节点向所述第一节点发送所述第一确认帧,其中,所述第一确认帧为所述第二节点在所述确认请求帧或者所述确认请求符号对应的时间区间之后相邻的时间区间内发送的。
在一些可能的实现方式中,若所述第一节点在所述第一帧对应的时间区间内,能够接收到第三节点发送的第三帧;
所述第一节点发送所述第二帧,包括:
若所述第一节点确定所述第一帧的结束时刻在所述第三帧的结束时刻之后,所述第一节点在发送所述第一帧之后,向所述第三节点发送所述第二帧,所述第二帧为所述第三帧对应的第二确认帧,其中,所述第一确认帧为所述第二节点在所述第二帧对应的时间区间之后相邻的时间区间内发送的;
或者,
若所述第一节点确定所述第一帧的结束时刻在所述第三帧的结束时刻之前,所述第一节点在接收完所述第三帧之后,向所述第三节点发送所述第二帧,所述第二帧为所述第三帧对应的第二确认帧,其中,所述第一确认帧为所述第二节点在所述第二帧对应的时间区间之后相邻的时间区间内发送的。
更具体地,该第二帧为该第二确认帧时,该第二确认帧包括第二指示信息,该第二指示信息用于指示该第三节点在该第二帧对应的时间区间之后相邻的时间区间内,禁止向该第一节点发送下一帧。
在一些可能的实现方式中,若所述第一节点在所述第一帧对应的时间区间内,能够接收到第三节点发送的第三帧,并且,所述第一帧的结束时刻在所述第三帧的结束时刻之前;
所述第一节点在全双工无竞争的传输机会FDCFTXOP中向第二节点发送第一帧后,所述方法还包括:
所述第一节点根据所述第三帧的时长,判断在所述第三帧的结束时刻之前是否能够开始向所述第二节点发送至少一个第四帧;
若所述第一节点确定在所述第三帧的结束时刻之前能够开始向所述第二节点发送所述至少一个第四帧,所述第一节点在发送所述第一帧之后,向所述第二节点发送所述至少一个第四帧。
本发明实施例的传输数据的方法,能够让第一节点尽可能地利用资源发送其数据,避免资源浪费。
在一些可能的实现方式中,若所述第一节点在所述第三帧的结束时刻之前能够开始向所述第二节点发送所述至少一个第四帧,并且,所述至少一个第四帧中的最后一个第四帧的结束时刻在所述第三帧的结束时刻之后,
所述第一节点发送所述第二帧,包括:
所述向所述第二节点发送所述第二帧,所述第二帧为所述最后一个第四帧,所述最后一个第四帧包括第三指示信息,其中,所述第三指示信息用于指示所述第二节点在所述第二帧对应的时间区间之后相邻的时间区间内,向所述第一节点发送所述第一确认帧,所述第一确认帧为所述第二节点对所述第一帧和所述至少一个第四帧中的部分或者全部进行的确认,所述第三帧对应的第二确认帧为所述第一节点在所述第二帧对应的时间区间之后相邻的时间区间内发送的。
在一些可能的实现方式中,若所述第一节点在所述第三帧的结束时刻之前能够开始向所述第二节点发送所述至少一个第四帧,并且,所述至少一个第四帧中的最后一个第四帧的结束时刻在所述第三帧的结束时刻之前,
所述第一节点发送所述第二帧,包括:
所述第一节点在接收完所述第三帧之后,向所述第三节点发送所述第二帧,所述第二帧为所述第二确认帧,其中,所述第一确认帧为所述第二节点在所述第二帧对应的时间区间之后相邻的时间区间内发送的;
或者,
所述第一节点在发送所述至少一个第四帧之后,向所述第二节点发送所述第二帧,所述第二帧为所述最后一个第四帧,所述最后一个第四帧包括第四指示信息,所述第四指示信息用于指示所述第二节点在所述第三帧对应的时间区间之后相邻的时间区间内,向所述第一节点发送所述第一确认帧,所述第一确认帧为所述第二节点对所述第一帧和所述至少一个第四帧中的部分或者全部进行的确认,所述第三帧对应的第二确认帧为所述第一节点在所述第三帧的结束时刻之后相邻的时间区间内发送的。
在一些可能的实现方式中,若所述第一节点在所述第三帧的结束时刻之前不能够开始向所述第二节点发送所述至少一个第四帧;
所述第一节点发送所述第二帧,包括:
所述第一节点在接收完所述第三帧之后,向所述第三节点发送所述第二帧,所述第二帧为所述第二确认帧,其中,所述第一确认帧为所述第二节点在所述第二确认帧对应的时间区间之后相邻的时间区间内发送的;
或者,
所述第一节点在所述第一帧之后,向所述第二节点发送所述第二帧,所述第二帧为确认请求帧或者确认请求符号,用于请求所述第二节点向所述第一节点发送所述第一确 认帧,其中,所述第一确认帧为所述第二节点在所述第三帧对应的时间区间之后相邻的时间区间内发送的,其中,所述第二确认帧为所述第一节点在所述第三帧的结束时刻之后相邻的时间区间内发送的。
在一些可能的实现方式中,帧之间可以存在帧间隔。
在一些可能的实现方式中,帧间隔可以部分为0或者全部为0。
第二方面,提供了一种传输数据的方法,所述方法包括:
第二节点在全双工无竞争的传输机会FDCFTXOP中接收第一节点发送的第一帧,所述第一帧包括第一指示信息;
其中,所述第一指示信息用于指示所述第二节点在接收完第二帧之后,向所述第一节点发送所述第一帧对应的第一确认帧;
所述第二节点接收所述第二帧;
所述第二节点在接收完所述第二帧之后,向所述第一节点发送所述第一确认帧。
本发明实施例中,在节点与不同的两个节点的同时进行通信时,避免确认帧的传输发生冲突,并提高带宽资源利用率,进而提高网络吞吐量。
在一些可能的实现方式中,所述第二节点接收所述第二帧,包括:
所述第二节点接收所述第一节点发送所述第二帧,所述第二帧为确认请求帧或者确认请求符号,用于请求所述第二节点向所述第一节点发送所述第一确认帧,其中,所述第一确认帧为所述第二节点在所述确认请求帧或者确认请求符号对应的时间区间之后相邻的时间区间内发送的,或者,所述第一确认帧为所述第二节点在第三帧对应的时间区间之后相邻的时间区间内发送的,所述第三帧为第三节点向所述第一节点发送的;
或者,
所述第二节点接收所述第一节点向所述第三节点发送的所述第二帧,所述第二帧为第二确认帧,所述第一确认帧为所述第二节点在所述第二确认帧对应的时间区间之后相邻的时间区间内发送的。
在一些可能的实现方式中,若所述第二节点在接收到所述第二帧之前,能够接收到所述第一节点发送的至少一个第四帧,所述向所述第一节点发送所述第一确认帧,包括:
所述第二节点根据所述至少一个第四帧中的指示信息或者第二确认帧,向所述第一节点发送所述第一确认帧,其中,所述第二确认帧为所述第一节点向第三节点发送的第三帧对应的确认帧。
在一些可能的实现方式中,所述第二节点接收所述第二帧,包括:
所述第二节点接收所述第一节点发送的所述第二帧,所述第二帧为所述至少一个第四帧中的最后一个第四帧,所述最后一个第四帧包括第三指示信息,其中,所述第三指示信息用于指示所述第二节点在所述第二帧对应的时间区间之后相邻的时间区间内,向所述第一节点发送所述第一确认帧,所述第一确认帧为所述第二节点对所述第一帧和所述至少一个第四帧中的部分或者全部进行的确认;
或者,
所述第二节点接收所述第二帧,所述第二帧为所述第二确认帧,所述第一确认帧为所述第二节点对所述第一帧和所述至少一个第四帧中的部分或者全部进行的确认,所述第一确认帧为所述第二节点在所述第二确认帧对应的时间区间之后相邻的时间区间内发送的;
或者,
所述第二节点接收所述第一节点发送的所述第二帧,所述第二帧为所述最后一个第四帧,所述最后一个第四帧包括第四指示信息,其中,所述第四指示信息用于指示所述第二节点在所述第三帧的结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧,所述第一确认帧为所述第二节点对所述第一帧和所述至少一个第四帧中的部分或者全部进行的确认。
本发明实施例的传输数据的方法,能够让第一节点尽可能地利用资源发送其数据,避免资源浪费。
在一些可能的实现方式中,帧之间可以存在帧间隔。
在一些可能的实现方式中,帧间隔可以部分为0或者全部为0。
第三方面,提供了一种装置,所述装置包括收发单元,所述收发单元用于:
在全双工无竞争的传输机会FDCFTXOP中向第二节点发送第一帧,所述第一帧包括第一指示信息;
其中,所述第一指示信息用于指示所述第二节点在接收完第二帧之后,向所述装置发送所述第一帧对应的第一确认帧;
发送所述第二帧;
在发送完所述第二帧之后,接收所述第二节点发送的所述第一确认帧。
第四方面,提供了一种装置,所述装置包括收发器,所述收发器用于:
在全双工无竞争的传输机会FDCFTXOP中向第二节点发送第一帧,所述第一帧包括第一指示信息;
其中,所述第一指示信息用于指示所述第二节点在接收完第二帧之后,向所述装置发送所述第一帧对应的第一确认帧;
发送所述第二帧;
在发送完所述第二帧之后,接收所述第二节点发送的所述第一确认帧。
应理解,第三方面和第四方面的装置能够实现上述方法中第一节点的各个步骤。
第五方面,提供了一种装置,所述装置包括收发单元,所述收发单元用于:
在全双工无竞争的传输机会FDCFTXOP中接收第一节点发送的第一帧,所述第一帧包括第一指示信息;
其中,所述第一指示信息用于指示所述装置在接收完第二帧之后,向所述第一节点发送所述第一帧对应的第一确认帧;
接收所述第二帧;
在接收完所述第二帧之后,向所述第一节点发送所述第一确认帧。
第六方面,提供了一种装置,所述装置包括收发器,所述收发器用于:
在全双工无竞争的传输机会FDCFTXOP中接收第一节点发送的第一帧,所述第一帧包括第一指示信息;
其中,所述第一指示信息用于指示所述装置在接收完第二帧之后,向所述第一节点发送所述第一帧对应的第一确认帧;
接收所述第二帧;
在接收完所述第二帧之后,向所述第一节点发送所述第一确认帧。
应理解,第五方面和第六方面的装置能够实现上述方法中第二节点的各个步骤。
第七方面,提供了一种传输数据的方法,所述方法包括:
第一节点在全双工无竞争的传输机会FDCFTXOP中接收第三节点发送的第三帧;
所述第一节点在接收所述第三帧的过程中,向第二节点发送第一帧,所述第一帧包括第一指示信息;
其中,所述第一指示信息用于所述第二节点根据所述第一指示信息确定出第一时间区间,所述第一时间区间为所述第一节点用于接收所述第一帧对应的第一确认帧的时间区间,所述第一时间区间对应的初始时刻和第二时间区间的初始时刻相同,所述第二时间区间为所述第一节点用于发送第三帧对应的第二确认帧的时间区间;
所述第一节点根据所述第一指示信息,接收所述第二节点发送的所述第一确认帧。
由于A在C开始发送之后才开始发送,因此,A可以侦听完C发送的帧的帧头,进而可以确定第三帧的时长(duration以及该第一帧的初始时刻和该第三帧的初始时刻之间的差值△C1A1。
具体而言,A接收来自C的MSG_C1帧,并解析C1_DURATION。A在解析出该C1_DURATION后,如果在C发送的MSG_C1帧结束前开始发送其MSG_A1帧,在MSG_A1帧中携带该第一指示信息。
本发明实施例中,在节点与不同的两个节点的同时进行通信时,避免确认帧的传输发生冲突,并提高带宽资源利用率,进而提高网络吞吐量。
在一些可能的实现方式中,所述第一指示信息包括所述第三帧的时长,以及所述第一帧的初始时刻和所述第三帧的初始时刻之间的差值;
其中,所述接收所述第二节点发送的所述第一确认帧,包括:
若所述第一节点根据所述第一指示信息确定所述第一帧的结束时刻在所述第三帧的结束时刻之前,所述第一节点在所述第三帧的结束时刻之后的相邻的时间区间内接收所述第二节点发送的所述第一确认帧;
或者,
若所述第一节点根据所述第一指示信息确定所述第一帧的结束时刻在所述第三帧的结束时刻之后,所述第一节点在所述第一帧的结束时刻之后的相邻的时间区间内接收所述第二节点发送的所述第一确认帧。
在一些可能的实现方式中,所述第一指示信息包括所述第三帧的时长、所述第一帧的初始时刻和所述第三帧的初始时刻之间的差值,以及第二指示信息,所述第二指示信息用于指示所述第二节点在所述第一帧的结束时刻或者在所述第三帧的结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧,或者,所述第二指示信息用于指示所述第二节点在当前帧的结束时刻之后继续接收所述第一节点发送的下一帧;
其中,所述接收所述第二节点发送的所述第一确认帧,包括:
若所述第一节点确定所述第一帧的结束时刻在所述第三帧的结束时刻之后,所述第一节点在所述第一帧的结束时刻之后相邻的时间区间内,接收所述第二节点发送所述第一确认帧;
或者,
若所述第一节点确定所述第一帧的结束时刻在所述第三帧的结束时刻之前,所述第一节点在所述第三帧的结束时刻之后相邻的时间区间内,接收所述第二节点发送所述第一确认帧;
或者,
若所述第一节点确定所述第一帧的结束时刻在所述第三帧的结束时刻之前,所述接收所述第二节点发送的所述第一确认帧之前,所述方法还包括:
所述第一节点根据所述第三帧的时长,判断在所述第三帧的结束时刻之前是否能够开始向所述第二节点发送至少一个第四帧;
若所述第一节点确定在所述第三帧的结束时刻之前能够开始向所述第二节点发送所述至少一个第四帧,所述第一节点在发送所述第一帧之后,向所述第二节点发送所述至少一个第四帧。
本发明实施例的传输数据的方法,能够让第一节点尽可能地利用资源发送其数据,避免资源浪费。
在一些可能的实现方式中,所述第一帧的结束时刻在所述第三帧的结束时刻之前;
所述接收所述第二节点发送的所述第一确认帧,包括:
若所述第一节点在所述第一确认帧之前不能够向所述第二节点发送所述至少一个第四帧,所述第一节点在所述第三帧的结束时刻之后相邻的时间区间内,接收所述第二节点发送的所述第一确认帧,其中,所述第一帧中的所述第二指示信息用于指示所述第二节点在所述第三帧的结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧;
或者,
若所述第一节点在所述第三帧之前能够向所述第二节点发送所述至少一个第四帧,所述第一节点在发送完所述最后一个第四帧或者接收完所述第三帧之后相邻的时间区间内,接收所述第二节点发送的所述第一确认帧;其中,所述第一帧中的所述第二指示信息用于指示所述第二节点在接收完当前帧之后继续接收所述第一节点发送的下一帧,所述至少一个第四帧中除最后一个第四帧之外的每个第四帧中包括第三指示信息,所述第三指示信息用于指示所述第二节点在接收完当前帧之后继续接收所述第一节点发送的下一帧,所述最后一个第四帧中包括第四指示信息,所述第四指示信息用于指示所述第二节点在所述接收完最后一个第四帧或者所述第三帧的结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧。
在一些可能的实现方式中,所述第二确认帧包括第五指示信息,所述第五指示信息用于指示所述第三节点在接收完所述第二确认帧之后相邻的时间区间内,向所述第一节点发送下一帧。
在一些可能的实现方式中,帧之间可以存在帧间隔。
在一些可能的实现方式中,帧间隔可以部分为0或者全部为0。
第八方面,提供了一种传输数据的方法,所述方法包括:
第二节点在全双工无竞争的传输机会FDCFTXOP中接收第一节点发送的第一帧,所述第一帧包括第一指示信息;
其中,所述第一指示信息用于所述第二节点根据所述第一指示信息确定第一时间区间,所述第一时间区间为所述第一节点用于接收所述第一帧对应的第一确认帧的时间区间,所述第一时间区间对应的初始时刻和第二时间区间的初始时刻相同,所述第二时间区间为所述第一节点用于发送第三帧对应的第二确认帧的时间区间;
所述第二节点根据所述第一指示信息,向所述第一节点发送所述第一确认帧。
本发明实施例中,在节点与不同的两个节点的同时进行通信时,避免确认帧的传输发生冲突,并提高带宽资源利用率,进而提高网络吞吐量。
在一些可能的实现方式中,所述第一指示信息包括所述第三帧的时长,以及所述第一帧的初始时刻和所述第三帧的初始时刻之间的差值;
其中,所述向所述第一节点发送所述第一确认帧,包括:
若所述第二节点根据所述第一指示信息确定所述第一帧的结束时刻在所述第三帧的结束时刻之前,所述第二节点在所述第三帧结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧;
或者,
若所述第二节点根据所述第一指示信息确定所述第一帧的结束时刻在所述第三帧的结束时刻之后,所述第二节点在所述第一帧结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧。
在一些可能的实现方式中,所述第一指示信息包括所述第三帧的时长、所述第一帧的初始时刻和所述第三帧的初始时刻之间的差值,以及第二指示信息,其中,所述第二指示信息用于指示所述第二节点在所述第一帧的结束时刻或者所述第三帧的结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧;
其中,所述向所述第一节点发送所述第一确认帧,包括:
若所述第二节点根据所述第一指示信息确定所述第一帧的结束时刻在所述第三帧的结束时刻之后,所述第二节点在所述第一帧的结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧;
或者,
若所述第二节点根据所述第一指示信息确定所述第一帧的结束时刻在所述第三帧的结束时刻之前,所述第二节点在所述第三帧结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧。
在一些可能的实现方式中,所述第一指示信息包括所述第三帧的时长、所述第一帧的初始时刻和所述第三帧的初始时刻之间的差值,以及第二指示信息,所述第二指示信息用于指示所述第二节点在当前帧之后继续接收所述第一节点发送的下一帧;
所述向所述第一节点发送所述第一确认帧之前,所述方法还包括:
所述第二节点在接收完所述第一帧之后,接收所述第一节点发送的至少一个第四帧,所述至少一个第四帧中除最后一个第四帧之外的每个第四帧中包括第三指示信息,所述第三指示信息用于指示所述第二节点在接收完当前帧之后继续接收所述第一节点发送的下一帧,所述最后一个第四帧中包括第四指示信息,所述第四指示信息用于指示所述第二节点在所述最后一个第四帧的结束时刻或者所述第三帧结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧;
其中,所述向所述第一节点发送所述第一确认帧,包括:
若所述最后一个第四帧的结束时刻在所述第三帧的结束时刻之前,所述第二节点在所述第三帧结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧;
或者,
若所述最后一个第四帧的结束时刻在所述第三帧的结束时刻之后,所述第二节点在接收完所述最后一个第四帧之后相邻的时间区间内,向所述第一节点发送所述第一确认 帧。
本发明实施例的传输数据的方法,能够让第一节点尽可能地利用资源发送其数据,避免资源浪费。
在一些可能的实现方式中,帧之间可以存在帧间隔。
在一些可能的实现方式中,帧间隔可以部分为0或者全部为0。
第九方面,所述装置包括收发单元,所述收发单元用于:
在全双工无竞争的传输机会FDCFTXOP中接收第三节点发送的第三帧;
在接收所述第三帧的过程中,向第二节点发送第一帧,所述第一帧包括第一指示信息;
其中,所述第一指示信息用于所述第二节点根据所述第一指示信息确定出第一时间区间,所述第一时间区间为所述装置用于接收所述第一帧对应的第一确认帧的时间区间,所述第一时间区间对应的初始时刻和第二时间区间的初始时刻相同,所述第二时间区间为所述装置用于发送第三帧对应的第二确认帧的时间区间;
根据所述第一指示信息,接收所述第二节点发送的所述第一确认帧。
第十方面,提供了一种装置,所述装置包括收发器,所述收发器用于:
在全双工无竞争的传输机会FDCFTXOP中接收第三节点发送的第三帧;
在接收所述第三帧的过程中,向第二节点发送第一帧,所述第一帧包括第一指示信息;
其中,所述第一指示信息用于所述第二节点根据所述第一指示信息确定出第一时间区间,所述第一时间区间为所述装置用于接收所述第一帧对应的第一确认帧的时间区间,所述第一时间区间对应的初始时刻和第二时间区间的初始时刻相同,所述第二时间区间为所述装置用于发送第三帧对应的第二确认帧的时间区间;
应理解,第九方面和第十方面的装置能够实现上述方法中第一节点的各个步骤。
第十一方面,提供了一种装置,所述装置包括收发单元,所述收发单元用于:
在全双工无竞争的传输机会FDCFTXOP中接收第一节点发送的第一帧,所述第一帧包括第一指示信息;
其中,所述第一指示信息用于所述装置根据所述第一指示信息确定第一时间区间,所述第一时间区间为所述第一节点用于接收所述第一帧对应的第一确认帧的时间区间,所述第一时间区间对应的初始时刻和第二时间区间的初始时刻相同,所述第二时间区间为所述第一节点用于发送第三帧对应的第二确认帧的时间区间;
根据所述第一指示信息,向所述第一节点发送所述第一确认帧。
第十二方面,提供了一种装置,所述装置包括收发器,所述收发器用于:
在全双工无竞争的传输机会FDCFTXOP中接收第一节点发送的第一帧,所述第一帧包括第一指示信息;
其中,所述第一指示信息用于所述装置根据所述第一指示信息确定第一时间区间,所述第一时间区间为所述第一节点用于接收所述第一帧对应的第一确认帧的时间区间,所述第一时间区间对应的初始时刻和第二时间区间的初始时刻相同,所述第二时间区间为所述第一节点用于发送第三帧对应的第二确认帧的时间区间;
根据所述第一指示信息,向所述第一节点发送所述第一确认帧。
应理解,第十一方面和第十二方面的装置能够实现上述方法中第二节点的各个步骤。
第十三方面,提供了一种传输数据的方法,所述方法包括:
第一节点获取确认帧传输信息,其中,所述确认帧传输信息包括第一时间区间的起始时刻和第二时间区间的起始时刻,所述第一时间区间为所述第一节点用于接收第二节点发送的第一帧对应的第一确认帧的时间区间,所述第二时间区间为所述第一节点用于向第三节点发送第三帧对应的第二确认帧的时间区间;或者,所述确认帧传输信息包括所述第二节点使用的频段信息和所述第三节点使用的频段信息;
所述第一节点在全双工无竞争的传输机会FDCFTXOP中向第二节点发送第一帧;
所述第一节点在所述FDCFTXOP中接收第三节点发送的第三帧;
所述第一节点根据所述确认帧传输信息,接收所述第一确认帧和发送所述第二确认帧。
本发明实施例中,在节点与不同的两个节点的同时进行通信时,避免确认帧的传输发生冲突,并提高带宽资源利用率,进而提高网络吞吐量。
在一些可能的实现方式中,所述确认帧传输信息包括第一时间区间的起始时刻和第二时间区间的起始时刻,所述第一时间区间的起始时刻和所述第二时间区间的起始时刻相同;
其中,所述接收所述第一确认帧和发送所述第二确认帧,包括:
所述第一节点在所述确认帧传输信息指示的初始时刻,接收所述第一确认帧和发送所述第二确认帧。
本发明实施例的传输数据的方法,能够保证第一节点发送ACK帧时,不会与其他传输造成冲突。
在一些可能的实现方式中,所述第一帧或者所述第一确认帧包括第一指示信息,所述第一指示信息用于指示所述第三节点在发送所述第三帧之后向所述第一节点发送的下一帧的最大时长;或者,所述第一指示信息用于指示所述第三节点在发送所述第三帧之后向所述第一节点发送的下一帧对应的确认帧对应的时间区间的初始时刻。
在一些可能的实现方式中,所述确认帧传输信息包括数据帧对应的第一频段和确认帧对应的第二频段,所述第一频段和所述第二频段不重叠;
其中,所述接收所述第一确认帧和发送所述第二确认帧,包括:
所述第一节点在所述第二频段上,接收所述第一确认帧和发送所述第二确认帧,所述第一节点通过所述第一频段向所述第二节点发送所述第一帧,以及通过所述第一频段接收所述第三节点发送的所述第三帧。
本发明实施例中,数据帧和确认帧通过两个独立的“信道”发送,从而避免第二节点发送的确认帧与其他传输冲突,同时让第一节点尽可能地利用资源发送其数据,避免资源浪费。
在一些可能的实现方式中,所述确认帧传输信息包括所述第二节点用于发送所述第一确认帧使用的第一频段,以及,所述第三节点用于发送所述第三帧使用的第二频段,所述第一频段和所述第二频段不重叠;
其中,所述接收所述第一确认帧和发送所述第二确认帧,包括:
所述第一节点在所述第一频段上,接收所述第一确认帧;
所述第一节点在所述第一频段和所述第二频段上,发送所述第二确认帧。
本发明实施例中,由于第三帧的频段和第一确认帧的频段不重叠,同时,第一帧的 频段与第二确认帧的频段不重叠,因此,第一节点在同时接收到数据帧和确认帧时,能够正常进行解读,避免传输冲突。
在一些可能的实现方式中,所述第一节点在全双工无竞争的传输机会FDCFTXOP上向第二节点发送第一帧之前,所述方法还包括:
第一节点发送所述第一帧前,确定是否存在接收完成但未进行确认的来自第三节点的至少一个第二帧;
若存在所述至少一个第二帧,将所述至少一个第二帧中部分或者全部第二帧对应的确认信息添加到所述第一帧中。
本发明实施例的传输数据的方法,能够让第一节点尽可能地利用资源发送其数据,避免资源浪费。
在一些可能的实现方式中,所述方法还包括:
所述第一节点在所述第三帧之后,接收所述第三节点发送的连续多个第一数据帧,所述连续多个第一数据帧中的最后一个数据帧中包括第二指示信息,所述第二指示信息用于指示所述第一节点当前帧为最后一个数据帧;
所述第一节点根据所述第二指示信息确定当前帧为最后一个数据帧时,向所述第三节点发送至少一个确认帧,所述至少一个确认帧为所述第一节点对未进行确认的来自第三节点的数据帧进行的确认;
所述第一节点在所述第一帧之后,向所述第二节点发送连续多个第二数据帧。
在一些可能的实现方式中,数据帧之间包括帧间隔。
在一些可能的实现方式中,所述第一频段对应普通基带调制方式,所述第二频段对应基带多载波调制方式,所述普通基带调制方式包括开关键控OOK调制方式或者多脉冲位置MPPM调制方式,所述基带多载波调制方式包括非对称限幅光正交频分复用ACO-OFDM调制方式或者直流偏置光正交频分复用DCO-OFDM调制方式。
在一些可能的实现方式中,所述第一节点获取确认帧传输信息,包括:
所述第一节点在建立通信链路过程中,通过与所述第二节点、所述第三节点进行协商,获取所述确认帧传输信息;或者,第一节点接收域主节点DM发送的媒体接入计划MAP帧,所述MAP帧包括所述确认帧传输信息。
在一些可能的实现方式中,帧之间可以存在帧间隔。
在一些可能的实现方式中,帧间隔可以部分为0或者全部为0。
第十四方面,提供了一种传输数据的方法,所述方法包括:
第二节点获取确认帧传输信息,其中,所述确认帧传输信息包括第一时间区间的起始时刻和第二时间区间的起始时刻,所述第一时间区间为所述第一节点用于接收第二节点发送的第一帧对应的第一确认帧的时间区间,所述第二时间区间为所述第一节点用于向第三节点发送第三帧对应的第二确认帧的时间区间;或者,所述确认帧传输信息包括所述第二节点使用的频段信息和所述第三节点使用的频段信息;
所述第二节点在全双工无竞争的传输机会FDCFTXOP中接收第一节点发送的第一帧;
所述第二节点根据所述确认帧传输信息,向所述第一节点发送所述第一确认帧。
本发明实施例中,在节点与不同的两个节点的同时进行通信时,避免确认帧的传输发生冲突,并提高带宽资源利用率,进而提高网络吞吐量。
在一些可能的实现方式中,所述确认帧传输信息包括所述第一确认帧的起始时刻,所述第一确认帧的初始时刻和第二确认帧的初始时刻相同,其中,所述第二确认帧为所述第一节点对第三节点发送的第三帧进行的确认;
其中,所述向所述第一节点发送所述第一确认帧,包括:
所述第二节点在所述确认帧传输信息指示的初始时刻,向所述第一节点发送所述第一确认帧。
在一些可能的实现方式中,所述第一帧或者所述第一确认帧还包括第一指示信息,所述第一指示信息用于指示所述第三节点在发送所述第三帧之后向所述第一节点发送的下一帧的最大时长;或者,所述第一指示信息用于指示所述第三节点在发送所述第三帧之后向所述第一节点发送的下一帧对应的确认帧对应的时间区间的初始时刻。
在一些可能的实现方式中,所述确认帧传输信息包括数据帧对应的第一频段和确认帧对应的第二频段,所述第一频段和所述第二频段不重叠;
其中,所述向所述第一节点发送所述第一确认帧,包括:
所述第二节点在所述第二频段上,向所述第一节点发送所述第一确认帧,所述第二节点通过所述第一频段接收所述第一节点发送的所述第一帧。
在一些可能的实现方式中,所述确认帧传输信息包括所述第二节点用于发送所述第一确认帧使用的第一频段,以及,所述第三节点用于发送所述第三帧使用的第二频段,所述第一频段和所述第三节点使用的第二频段不重叠;
其中,所述向所述第一节点发送所述第一确认帧,包括:
所述第二节点在所述第一频段上,向所述第一节点发送所述第一确认帧;
所述第二节点在所述第一频段和所述第二频段上,接收所述第一节点发送的所述第二确认帧。
在一些可能的实现方式中,所述第一频段对应普通基带调制方式,所述第二频段对应基带多载波调制方式,所述普通基带调制方式包括开关键控OOK调制方式或者多脉冲位置MPPM调制方式,所述基带多载波调制方式包括非对称限幅光正交频分复用ACO-OFDM调制方式或者直流偏置光正交频分复用DCO-OFDM调制方式。
在一些可能的实现方式中,所述第二节点获取确认帧传输信息,包括:
所述第二节点在建立通信链路过程中,通过与所述第一节点、所述第三节点进行协商,获取所述确认帧传输信息;或者,第二节点接收域主节点DM发送的媒体接入计划MAP帧,所述MAP帧包括所述确认帧传输信息。
在一些可能的实现方式中,帧之间可以存在帧间隔。
在一些可能的实现方式中,帧间隔可以部分为0或者全部为0。
第十五方面,提供了一种装置,所述装置包括收发单元,所述收发单元用于:
获取确认帧传输信息,
其中,所述确认帧传输信息包括第一时间区间的起始时刻和第二时间区间的起始时刻,所述第一时间区间为所述装置用于接收第二节点发送的第一帧对应的第一确认帧的时间区间,所述第二时间区间为所述装置用于向第三节点发送第三帧对应的第二确认帧的时间区间;或者,所述确认帧传输信息包括所述第二节点使用的频段信息和所述第三节点使用的频段信息;
在全双工无竞争的传输机会FDCFTXOP中向第二节点发送第一帧;
在所述FDCFTXOP中接收第三节点发送的第三帧;
根据所述确认帧传输信息,接收所述第一确认帧和发送所述第二确认帧。
第十六方面,提供了一种装置,所述装置包括收发器,所述收发器用于:
获取确认帧传输信息,
其中,所述确认帧传输信息包括第一时间区间的起始时刻和第二时间区间的起始时刻,所述第一时间区间为所述装置用于接收第二节点发送的第一帧对应的第一确认帧的时间区间,所述第二时间区间为所述装置用于向第三节点发送第三帧对应的第二确认帧的时间区间;或者,所述确认帧传输信息包括所述第二节点使用的频段信息和所述第三节点使用的频段信息;
在全双工无竞争的传输机会FDCFTXOP中向第二节点发送第一帧;
在所述FDCFTXOP中接收第三节点发送的第三帧;
根据所述确认帧传输信息,接收所述第一确认帧和发送所述第二确认帧。
应理解,第十五方面和第十六方面的装置能够实现上述方法中第一节点的各个步骤。
第十七方面,提供了一种装置,所述装置包括收发单元,所述收发单元用于:
获取确认帧传输信息,
其中,所述确认帧传输信息包括第一时间区间的起始时刻和第二时间区间的起始时刻,所述第一时间区间为所述装置用于接收第二节点发送的第一帧对应的第一确认帧的时间区间,所述第二时间区间为所述装置用于向第三节点发送第三帧对应的第二确认帧的时间区间;或者,所述确认帧传输信息包括所述第二节点使用的频段信息和所述第三节点使用的频段信息;
在全双工无竞争的传输机会FDCFTXOP中接收第一节点发送的第一帧;
根据所述确认帧传输信息,向所述第一节点发送所述第一确认帧。
第十八方面,提供了一种装置,所述装置包括收发器,所述收发器用于:
获取确认帧传输信息,
其中,所述确认帧传输信息包括第一时间区间的起始时刻和第二时间区间的起始时刻,所述第一时间区间为所述装置用于接收第二节点发送的第一帧对应的第一确认帧的时间区间,所述第二时间区间为所述装置用于向第三节点发送第三帧对应的第二确认帧的时间区间;或者,所述确认帧传输信息包括所述第二节点使用的频段信息和所述第三节点使用的频段信息;
在全双工无竞争的传输机会FDCFTXOP中接收第一节点发送的第一帧;
根据所述确认帧传输信息,向所述第一节点发送所述第一确认帧。
应理解,第十七方面和第十八方面的装置能够实现上述方法中第一节点的各个步骤。
第十九方面,提供了一种传输数据的方法,所述方法包括:
第一节点在全双工无竞争的传输机会FDCFTXOP中向第二节点发送第一帧并接收第三节点发送的第三帧;
所述第一节点在发送完所述第一帧后向所述第三节点发送第二确认帧,所述第二确认帧为所述第一节点对所述第三帧进行的确认;
所述第一节点在发送完所述第二确认帧之后,接收所述第二节点发送的所述第一确认帧,所述第一确认帧为所述第一节点对所述第一帧的进行确认。
在一些可能的实现方式中,所述第一节点在发送完所述第一帧后,向所述第三节点 发送第二确认帧之前,所述方法还包括:
所述第一节点判断是否已接收完所述第三节点发送的所述第三帧,若所述第一节点已接收完所述第三节点发送的所述第三帧,所述第一节点在所述第一帧对应的时间区间后相邻的时间区间内向所述第三节点发送第二确认帧;或者,若所述第一节点没有接收完所述第三节点发送的所述第三帧,所述第一节点在所述第三帧对应的时间区间后的相邻的时间区间内向所述第三节点发送第二确认帧。
第二十方面,提供了一种传输数据的方法,所述方法包括:
第二节点在全双工无竞争的传输机会FDCFTXOP中接收第一节点发送的第一帧;
所述第二节点在接收完所述第一帧之后,接收所述第一节点向所述第三节点发送的第二确认帧,其中,所述第二确认帧为所述第一节点对所述第三节点发送的第三帧进行的确认;
所述第二节点在接收到所述第二确认帧后,在所述第二确认帧对应的时间区间后相邻的时间区间内向第一节点发送第一确认帧,所述第一确认帧为所述第一节点对所述第一帧进行的确认。
第二十一方面,提供了一种装置,所述装置包括收发单元,所述收发单元用于:
在全双工无竞争的传输机会FDCFTXOP中向第二节点发送第一帧并接收第三节点发送的第三帧;
在发送完所述第一帧后向所述第三节点发送第二确认帧,所述第二确认帧为所述装置对所述第三帧进行的确认;
在发送完所述第二确认帧之后,接收所述第二节点发送的所述第一确认帧,所述第一确认帧为所述装置对所述第一帧的进行确认。
第二十二方面,提供了一种装置,所述装置包括收发器,所述收发器用于:
在全双工无竞争的传输机会FDCFTXOP中向第二节点发送第一帧并接收第三节点发送的第三帧;
在发送完所述第一帧后向所述第三节点发送第二确认帧,所述第二确认帧为所述装置对所述第三帧进行的确认;
在发送完所述第二确认帧之后,接收所述第二节点发送的所述第一确认帧,所述第一确认帧为所述装置对所述第一帧的进行确认。
应理解,第二十一方面和第二十二方面的装置能够实现上述方法中第一节点的各个步骤。
第二十三方面,提供了一种装置,所述装置包括收发单元,所述收发单元用于:
在全双工无竞争的传输机会FDCFTXOP中接收第一节点发送的第一帧;
在接收完所述第一帧之后,接收所述第一节点向所述第三节点发送的第二确认帧,其中,所述第二确认帧为所述第一节点对所述第三节点发送的第三帧进行的确认;
在接收到所述第二确认帧后,在所述第二确认帧对应的时间区间后相邻的时间区间内向第一节点发送第一确认帧,所述第一确认帧为所述第一节点对所述第一帧进行的确认。
第二十四方面,提供了一种装置,所述装置包括收发器,所述收发器用于:
在全双工无竞争的传输机会FDCFTXOP中接收第一节点发送的第一帧;
在接收完所述第一帧之后,接收所述第一节点向所述第三节点发送的第二确认帧, 其中,所述第二确认帧为所述第一节点对所述第三节点发送的第三帧进行的确认;
在接收到所述第二确认帧后,在所述第二确认帧对应的时间区间后相邻的时间区间内向第一节点发送第一确认帧,所述第一确认帧为所述第一节点对所述第一帧进行的确认。
应理解,第二十三方面和第二十四方面的装置能够实现上述方法中第一节点的各个步骤。
第二十五方面,提供了一种计算机可读存储介质,所述计算机可读存储介质存储有程序,所述程序使得网络设备执行上述方法中的任一种可能的实现方式中的方法。
第二十六方面,提供了一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机执行上述各方面所述的方法。
附图说明
图1是现有技术的实例图。
图2是根据本发明实施例的网络结构的结构图。
图3是根据本发明实施例的网络拓扑结构的示意图。
图4是根据本发明实施例的网络拓扑结构另一示意图。
图5是根据本发明实施例的全双工传输结构的示例。
图6是根据本发明实施例的全双工传输结构的另一示例。
图7是根据本发明实施例的传输数据的方法的示意性流程图。
图8是根据本发明实施例的FDCFTXOP中的第一传输示意图。
图9是根据本发明实施例的FDCFTXOP中的第二传输示意图。
图10是根据本发明实施例的FDCFTXOP中的第三传输示意图。
图11是根据本发明实施例的FDCFTXOP中的第四传输示意图。
图12是根据本发明实施例的FDCFTXOP中的第五示意性结构图。
图13是根据本发明实施例的FDCFTXOP中的第六传输示意图。
图14是根据本发明实施例的FDCFTXOP中的第七传输示意图。
图15是根据本发明实施例的传输数据的方法的另一示意性流程图。
图16是根据本发明实施例的FDCFTXOP中的第一传输示意图。
图17是根据本发明实施例的FDCFTXOP中的第二传输示意图。
图18是根据本发明实施例的FDCFTXOP中的第三传输示意图。
图19是根据本发明实施例的传输数据的方法的再一示意性流程图。
图20是根据本发明实施例的FDCFTXOP中的第一传输示意图。
图21是根据本发明实施例的FDCFTXOP中的第二传输示意图。
图22是根据本发明实施例的FDCFTXOP中的第三传输示意图。
图23是根据本发明实施例的FDCFTXOP中的第四传输示意图。
图24是根据本发明实施例的FDCFTXOP中的第五传输示意图。
图25是根据本发明实施例的传输数据的装置的示意性框图。
图26是根据本发明实施例的传输数据的装置的另一示意性框图。
图27是根据本发明实施例的传输数据的装置的再一示意性框图。
具体实施方式
下面将结合附图,对本发明实施例中的技术方案进行描述。
应理解,本发明实施例的技术方案可以应用于各种光无线通信系统。例如,国际电信联盟电信标准分局(International Telecommunication Union Telecommunication Standardization Sector,ITU-T),正在制定面向室内应用的VLC标准(G.vlc)的网络结构。又例如,多节点通信的全双工光无线通信系统等等。
图2是根据本发明实施例的网络结构的结构图。
如图2所示。一个G.vlc的网络称为域(Domain),网络中一个节点作为主节点(Domain Master,DM),对网络针对正常工作进行管理。例如,负责对网络资源进行调度等。其它非DM的普通节点称为端点节点(Endpoint,EP)。
G.vlc中,DM可能基于媒体访问控制(Media Access Control MAC,MAC)周期进行网络资源及传输的调度。可选地,每个MAC周期可分为无竞争的传输机会(Contention-Free Transmission Opportunity,CFTXOP)、共享的传输机会(Shared Transmission Opportunity,STXOP)、全双工无竞争传输计划(Full Duplex Contention-Free Transmission Opportunity,FDCFTXOP)和全双工共享传输机会(Full Duplex Shared Transmission Opportunity,FDSTXOP)。STXOP可包括无竞争时隙(Contention-Free Time Slot,CFTS)和基于竞争的时隙(Contention-Based Time Slot,CBTS)。在每个MAC周期中,协调节点(coordinator)通过发送媒体接入计划(Media Access Plan,MAP)帧,下发网络的调度信息、控制参数等,在当前MAC周期发送的MAP帧,携带的调度信息、控制参数等适用于下一个MAC周期。本发明实施例以全双工无竞争传输机会为例进行说明。具体而言,FDCFTXOP可以是DM分配给两个节点或者三个节点专用的传输机会,其中分配给三个节点专用时,其中一个节点间应支持同时收发,其余二个节点分别仅接收和仅发送。
其中,本发明实施例中的主节点可以是基站或者具有基站功能的网络设备。例如,网络设备可以是GSM系统或CDMA中的基站(Base Transceiver Station,BTS),也可以是WCDMA系统中的基站(NodeB,NB),还可以是LTE系统中的演进型基站(Evolved Node B,eNB或eNodeB),或者网络设备可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络中的网络设备等。
此外,端点节点可以是终端设备,终端设备也可称为接入终端、用户设备(User Equipment,UE)、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol,SIP)电话、无线本地环路(Wireless Local Loop,WLL)站、个人数字线性处理(Personal Digital Assistant,PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它线性处理设备、车载设备、可穿戴设备等等。
应理解,本发明实施例中主节点和端点节点之间可以采用各种连接方式。下面以集中式模式(CM)和统一模式(UM)为例进行说明。
图3是本发明实施例的CM网络拓扑结构的示意图。
如图3所示,该拓扑结构包括DM、EP1、EP2和EP3,该拓扑结构采用集中式模式,即EP1、EP2和EP3只能与DM进行通信,EP之间不能互相直接通信。
图4是本发明实施例的UM网络拓扑结构的示意图。
如图3所示,该拓扑结构包括DM、EP1、EP2、EP3、EP4和EP5,该拓扑结构采用统一模式,任意两个EP之间都有可能通信,无法直接通信的两个EP某个或多个具备中继(relay)功能的EP进行中继。具体地,如图4所示,EP4可以通过EP3与DM进行通信,EP5可以通过EP3和EP4与DM进行通信。
还应理解,本发明实施例是适用于各种全双工的光无线通信系统。下面结合图5和图6进行示例性说明。
图5是根据本发明实施例的全双工传输结构的示例。
如图5所示,节点A的发送器为VL LED,接收器为IR PD,节点B和C的发送器为IR LED,接收器为VL PD。即通过发送和接收不同波段的光信号,在节点A处可以实现同时收发,即接收C发送的信号时,向B发送信号。而C的发送也不会对B的接收造成干扰。
图6是根据本发明实施例的全双工传输结构的另一示例。
如图6所示,节点A的发送器为VL LED,接收器为IR PD,节点B和C的发送器为IR LED,接收器为VL+IR PD(即可见光和红外线都可以检测到)。即通过发送和接收不同波段的光信号,在节点A处可以实现同时收发,即接收C发送的信号时,向B发送信号。由于C的发送可能会对B的接收造成干扰,因此,可以进一步限定B和C互相无法侦听检测到对方发送的信号。
应理解,上述图5和图6仅仅是对本发明实施例的全双工场景的示例性说明,不应对本发明实施例进行限定。例如,上述图5和图6中,三个节点可以都是EP,也可以是B、C为EP,而A是DM。不做具体限定。
为了便于理解,本发明实施例中,以3个节点(第一节点A,第二节点B和第三节点C)将全双工过程具体地分为3种场景:
场景1:第一节点在发送第一帧的过程中,开始接收第三节点发送的第三帧。
场景2:第一节点在接收第三帧的过程中,开始向第二节点发送第一帧。
场景3:第一节点在开始发送第一帧的同时,开始接收发到第三节点发送的第三帧。
其中,第一帧为第一节点向第二节点发送的数据帧,第三帧为第三节点向第一节点发送的数据帧。
应理解,该第一帧和该第三帧还可以是需要接收节点进行确认的业务数据帧或管理信息帧或包含业务数据或管理信息的物理帧。
具体的,上述场景1可以理解为第一节点向第二节点发送第一帧的初始时刻早于第三节点向第一节点发送第三帧的初始时刻。类似的,场景2可以理解为第一节点向第二节点发送第一帧的初始时刻晚于第三节点向第一节点发送第三帧的初始时刻。场景3可以理解为第一节点向第二节点发送第一帧的初始时刻等于第三节点向第一节点发送第三帧的初始时刻。
需要注意的是,场景3中第一节点和第三节点的传输要求“同时”开始,但是“同时”并不要求时间上严格精确一致,例如,符号级别的同步。换句话说,第一帧对应的时间区间和第三帧对应的时间区间的起始时刻相同。
本发明实施例中的时间区间可以是数据帧对应的时间区间,也可以是确认帧对应的时间区间。本发明实施例不做具体限定。也就是说,本发明实施例中的时间区间用于表 示用于传输某一帧的时间。
例如,该时间区间可以是一帧从开始被传输的时刻到传输结束的时刻之间的时间,应理解,由于传输的不同的帧之间一般存在帧间间隔,该帧间间隔不包含在该时间区间中,即两个相邻的时间区间之间可能存在一段帧间间隔。
应注意,在本发明实施例中采用术语第一、第二、第三等来描述各种帧、指示信息和节点,但这些帧、指示信息和节点不应限于这些术语。这些术语仅用来将帧、指示信息和节点彼此区分开。也就是说,本发明实施例中的第一帧、第二帧以及第三帧不应用于限定帧的发送顺序或者帧的个数信息等等。例如,在不脱离本发明实施例范围的情况下,第一帧也可以称为第五帧等等。
还应注意,本发明实施例的附图中,A向B发送,C向A发送。以A先于C发送第一帧或与C同时发送第三帧为例进行说明。如果A发送完了第一帧且已经收到了B的ACK,则本发明实施例的方案即是A发送的下一帧、C发送第三帧的应用场景。
还应注意,为方便描述,下面结合附图说明实施例的过程中,第一节点用A代替,第二节点用B代替,第三节点用C代替。
此外,本发明实施例中的附图以A在FDCFTXOP的起始时刻向B发送第一帧,或者,以A在FDCFTXOP的起始时刻接收C发送的第三帧为例进行说明,但本发明实施例不仅仅适用于FDCFTXOP的起始时刻接收或发送数据帧的应用场景。
也就是说,本发明实施例的技术方案适用于FDCFTXOP的任意时段。
还应理解,本发明实施例中,每个帧之间可以存在帧间隔,也就是说,用于传输数据帧和确认帧之间可以存在帧间隔。可选地,帧间隔可以部分为0或者全部为0。本发明实施例不做限定。
本发明实施例中,第一节点能够指示第二节点发送第一确认帧的起始时刻,以及指示第三节点可以发送下一帧的起始时刻。进而,保证数据传输的成功率。
下面分别针对上述3中场景进行说明。
图7是本发明实施例的传输数据的方法100的示意性流程图。
如图7所示,该方法100包括:
110,第一节点在FDCFTXOP向第二节点发送第一帧,该第一帧包括第一指示信息。
具体而言,该第一指示信息用于指示第二节点在接收完第二帧之后,向该第一节点发送该第一帧对应的第一确认帧。
为方便描述,下面针对本发明实施例中场景1下涉及的各种指示信息进行说明:
第二指示信息用于指示该第三节点在该第二帧对应的时间区间之后相邻的时间区间内,禁止向该第一节点发送下一帧。
第三指示信息用于指示该第二节点在该第二帧对应的时间区间之后相邻的时间区间内,向该第一节点发送该第一确认帧。
第四指示信息用于指示该第二节点在该第三帧对应的时间区间之后相邻的时间区间内,向该第一节点发送该第一确认帧。
第五指示信息用于指示该第三节点在接收完该第二确认帧之后相邻的时间区间内,向该第一节点发送下一帧。
例如,该数据帧中的指示信息可以以“ACK时间指示”的形式表示,具体地,其取值可以如下所示:
第一指示信息可以用“ACK时间指示=0”表示,用于指示B在接收到A发送的第二帧后,向A发送ACK帧。
第一指示信息也可以用“ACK时间指示=0”表示,用于指示B继续检测A发送的帧,直至收到A发送的ACK帧或“ACK时间指示=1”的帧之后,向A发送ACK帧。
第三指示信息和第四指示信息可以同时用“ACK时间指示=1”表示,用于指示B在当前帧或者第三帧之后,向A发送ACK帧。
又例如,确认帧的指示信息可以以“ACK结束指示”的形式表示,具体地,其取值可以如下所示:
第二指示信息可以用“ACK结束指示=1”表示,用于指示C在接收完此ACK帧之后相邻的时间区间内,禁止向A发送下一帧。
第五指示信息可以用“ACK结束指示=0”表示,用于指示C收到此ACK帧后,可以向A发送下一帧。
可选地,“ACK时间指示”携带在A发送给B的数据帧中,“ACK结束指示”携带在A针对第三帧发送给C的确认帧中。
需要注意的是,本发明实施例中,该第二帧可以是确认帧请求帧或者确认请求符号,也可以是第一节点向第二节点发送的数据帧,也可以是第一节点向第二节点发送的第二帧,还可以是第一节点向第三节点发送的对数据帧的确认帧,应理解,本发明实施例对该第二帧的具体形式不做限定。也就是说,凡是能够指示第二节点发送该第一确认帧的信息或者信号,均属于本发明实施例中第二帧。
应理解,本发明实施例中的第二帧可以携带有上述任何一种指示信息中。例如,该第二帧为数据帧时,可以携带有第一指示信息,也可以携带第三指示信息,也可以携带第四指示信息。又例如,该第二帧是确认帧时,可以携带第二指示信息,也可以携带第五指示信息。
120,该第一节点发送第二帧。
130,该第一节点在该第二帧之后,接收该第二节点发送的该第一帧对应的第一确认帧。
具体而言,该第一节点向第二节点发送该第二帧,或者,该第一节点向第三节点发送该第一帧,以便于第二节点在接收到该第二帧后,在该第二帧之后,向第一节点发送该第一帧对应的第一确认帧。
在本发明实施例中,A通过一系列的判断过程,指示B如何ACK,从而避免B发送的ACK与其他传输冲突。
应理解,本发明实施例中的第一帧是第一节点向第二节点发送的数据帧。第一确认帧可以是第二节点向第一节点发送的用于对该第一帧进行确认的帧。
然而,在第一节点向第二节点发送第一帧的过程中,有可能接收到第三节点发送的第三帧,该第三帧可以是数据帧,也有可能接收不到(即第三节点未向第一节点发送该第三帧)。因此,下面分情况进行说明。
作为一个实施例,若该第一节点在该第一帧对应的时间区间内,未接收到第三节点发送的第三帧。
可选地,该第一节点在发送该第一帧之后,向该第三节点发送该第二帧,该第二帧包括第二指示信息,该第二指示信息用于指示该第三节点在该第二帧对应的时间区间之 后相邻的时间区间内,禁止向该第一节点发送下一帧,其中,该第一确认帧为该第二节点在该第二帧对应的时间区间之后相邻的时间区间内发送的。可选地,该第一节点在该第一帧对应的时间区间后相邻的时间区间内向该第三节点发送该第二帧。
也就是说,该第一确认帧为该第二节点在接收到该第二帧之后发送的。
应注意,本发明实施例中,A未接收到C发送的第三帧,也就是说,A向C发送的第二帧可以只包括该第二指示信息。
具体地,如图8所示:
针对第一节点(A):
A发送MSG_A1帧时,直到发送完该MSG_A1帧,没有收到来自C的帧,则A发送向C发送ACK帧,该ACK帧实际不包含确认信息(因为C没有发送),该ACK帧用于指示B何时发送ACK帧,并等待接收B的ACK帧。
针对第二节点(B):
B在接收到这个A向C发送的ACK帧之后的IFG2后,向C发送MSG_A1帧的确认帧。
针对第三节点(C):
不允许C在检测到MSG_A1后的IFG1+ACK_DURATION+IFG2+ACK_DURATION内发送下一帧。
可选地,该第二指示信息为“ACK帧结束指示=1”,即,A向C发送的ACK帧携带“ACK帧结束指示=1”。
其中,ACK_DURATION表示ACK帧的时长,也即ACK帧对应的时间区间的长度,IFG1表示帧间隔(Inter-frame Gap,IFG)。应理解,下文相关附图中的ACK_DURATION与IFG1含义相同。
可选地,该第一节点在发送该第一帧之后,向该第二节点发送该第二帧,该第二帧为确认请求帧或者确认请求符号,用于请求该第二节点向该第一节点发送该第一确认帧。
其中,该第一确认帧为该第二节点在该确认请求帧或者该确认请求符号对应的时间区间之后相邻的时间区间内发送的。
换句话说,该第二节点接收完该第一节点发送该确认请求帧或者确认请求符号后,在该确认请求帧或者该确认请求符号对应的时间区间之后相邻的时间区间内发送该第一确认帧。
具体地,如图9所示:
针对第一节点(A):
A发送MSG_A1帧,直到发送完该MSG_A1帧,没有收到来自C的帧,则A向B发送“ACK请求”。可选地,为了提高传输效率,可以通过发送“ACK请求符号”来实现。
针对第二节点(B):
该“ACK请求符号”本身就用于指示B在收到该“ACK请求符号”后向A发送MSG_A1帧的ACK帧。
针对第三节点(C):
不允许C在检测到MSG_A1发送完后的(IFG1)+TS_DURATION+ACK_DURATION内发送下一帧。
其中,TS_DURATION表示该“ACK请求符号”的时长,也即该“ACK请求符号”对应的时间区间的长度。
应理解,本发明实施例中,B也可以是在收到该“ACK请求符号”后相隔一个帧间隔后向A发送MSG_A1帧的ACK帧,也可以不经过帧间隔向A发送MSG_A1帧的ACK帧。如图9所示,A可以是在IFG1后开始发送,也可以是直接发送(不经过该IFG1的时间)。
作为另一个实施例,该第一节点在第一帧对应的时间区间内,能够接收到第三节点发送的第三帧。
若该第一节点确定该第一帧的结束时刻在该第三帧的结束时刻之后,该第一节点在发送该第一帧之后,向该第三节点发送该第二帧,该第二帧为该第三帧对应的第二确认帧,其中,该第一确认帧为该第二节点在该第二帧对应的时间区间之后相邻的时间区间内发送的。
也就是说,该第一确认帧为该第二节点在接收到该第二确认帧之后发送的。
换句话说,该第二节点在接收完该第一节点向该第三节点发送的该第三帧对应的第二确认帧后,向第一节点发送该第一确认帧。
可选地,该第二确认帧包括第二指示信息,该第二指示信息用于指示该第三节点在该第二帧对应的时间区间之后相邻的时间区间内,禁止向该第一节点发送下一帧。
具体地,如图10所示:
针对第一节点(A):
A发送MSG_A1帧时,检测到C也发送了MSG_C1帧,则可以获取MSG_C1的帧长(C1_DURATION)。A对A1_DURATION和△A1C1+C1_DURATION进行对比。其中,△A1C1是C发送其MSG_C1与MSG_A1帧的发送时间的差。
可选地,该△A1C1为0,即第一节点和第三节点同时开始发送的。
其中,MSG_A1帧中携带有第一指示信息,即,“ACK帧时间指示=0”。
如果A1_DURATION>△A1C1+C1_DURATION,则A在发送完MSG_A1帧后,向C发送针对MSG_C1的ACK帧。
可选地,A向C发送的该ACK帧携带“ACK帧结束指示=1”,用于指示C在这个ACK帧后,A还会接收到另一个ACK帧(即B会随后发送ACK帧),从而使得C可以确定在B发送ACK帧的期间内禁止发送下一帧。
针对第二节点(B):B接收完A发送的MSG_A1帧后,根据“ACK时间指示=0”在接收完A向C发送的ACK帧后,间隔IFG2后,向A发送针对MSG_A1的ACK帧。
针对第三节点(C):
C根据第二指示信息(“ACK帧结束指示=1”),确定在MSG_C1帧之后的IFG1+ACK_DURATION+IFG2+ACK_DURATION后,才可以向A发送下一帧。
可以理解,这里的第一指示信息即是“ACK时间指示=0”,第二指示信息为“ACK帧结束指示=1”。
应理解,如果A1_DURATION>△A1C1+C1_DURATION,则C可以决定在发送完MSG_C1后发更多的帧,比如发送MSG_C2等等,直到MSG_Cj,但是要在MSG_A1结束之前发完。
但是,这种情况只适用于图5所示的传输结构,因为6所示的传输结构中,C可能 会由于受到自己发送的信号的“自干扰”,无法正确解析来自A的帧。
可选地,若该第一节点确定该第一帧的结束时刻在该第三帧的结束时刻之前,该第一节点在接收完该第三帧之后,向该第三节点发送该第二帧,该第二帧为该第三帧对应的第二确认帧。
也就是说,该第一确认帧为该第二节点在接收到该第二确认帧之后发送的。
换句话说,该第二节点在接收完该第一节点向该第三节点发送的该第三帧对应的第二确认帧后,向第一节点发送该第一确认帧。
可选地,该第二确认帧包括第二指示信息,该第二指示信息用于指示该第三节点在该第二帧对应的时间区间之后相邻的时间区间内,禁止向该第一节点发送下一帧。
这种情况下,第一节点、第二节点和第三节点的动作,与该第一帧的结束时刻在该第三帧的结束时刻之后的实现方式类似,为避免重复,在次不做赘述。
为了能够让A尽可能地利用资源发送其数据,提高带宽资源利用率,避免资源浪费。
本发明实施例中,若该第一帧的结束时刻在该第三帧的结束时刻之前;该第一节点根据该第三帧的时长,判断在该第三帧之前是否能够向该第二节点发送至少一个第四帧,并根据判断结果进行后续操作。
具体而言,若该第一节点在该第一帧对应的时间区间内,能够接收到第三节点发送的第三帧,并且,该第一帧的结束时刻在该第三帧的结束时刻之前;该第一节点发送该第二帧之前,根据该第三帧的时长,判断在该第三帧的结束时刻之前是否能够开始向该第二节点发送至少一个第四帧;若该第一节点确定在该第三帧的结束时刻之前能够开始向该第二节点发送至少一个第四帧,该第一节点在发送该第一帧之后,向该第二节点发送至少一个第四帧。
换句话说,若该第二节点在接收到该第二帧之前,能够接收到该第一节点发送的至少一个第四帧,该第二节点根据至少一个第四帧中的指示信息或者第二确认帧,向该第一节点发送该第一确认帧,其中,该第二确认帧为该第一节点向第三节点发送的第三帧对应的确认帧。
下面分别就该第一节点在该第三帧的结束时刻之前能够向该第二节点发送至少一个第四帧的情况,以及该第一节点在该第三帧的结束时刻之前不能够向该第二节点发送至少一个第四帧的情况,分别进行说明。
可选地,若该第一节点在该第三帧的结束时刻之前能够开始向该第二节点发送该至少一个第四帧,并且,至少一个第四帧中的最后一个第四帧的结束时刻在该第三帧的结束时刻之后,该第一节点向该第二节点发送该第二帧,该第二帧为该最后一个第四帧,该最后一个第四帧包括第三指示信息,其中,该第三指示信息用于指示该第二节点在该第二帧对应的时间区间之后相邻的时间区间内,向该第一节点发送该第一确认帧。
也就是说,该第一确认帧为该第二节点对该第一帧和至少一个第四帧中的部分或者全部进行的确认,该第三帧对应的第二确认帧为该第一节点在该第二帧对应的时间区间之后相邻的时间区间内发送的。
换句话说,该第二节点接收该第一节点发送的该第二帧后,向该第一节点发送该第一确认帧,其中,该第二帧为至少一个第四帧中的最后一个第四帧,该最后一个第四帧包括第三指示信息,其中,该第三指示信息用于指示该第二节点在该第二帧对应的时间区间之后相邻的时间区间内,向该第一节点发送该第一确认帧。
具体地,如图11所示:
针对第一节点(A):
如果A可以继续发送一帧或发送更多的数据帧,则在MSG_A2直至MSG_Ai-1中,“ACK时间指示=0”。在MSG_Ai中,“ACK时间指示=1”;
其中,ACK帧可以包括针对MSG_A1、MSG_A2、…、MSG_Ai的确认信息。
同时,在A发送完MSG_Ai后,A向C发送ACK帧。可选地,其中,ACK帧携带的“ACK结束指示=0”。
针对第二节点(B):
B接收完A发送的MSG_A1、MSG_A2、…、MSG_Ai后,根据MSG_Ai中“ACK时间指示=1”,在IFG3后,向A发送ACK帧。
针对第三节点(C):
A发送的ACK帧包括“ACK结束指示=1”,也就是说,C在接收完A向C发送ACK帧之后的IFG3后,就可以发送下一帧。
可选地,若该第一节点在该第三帧的结束时刻之前能够开始向该第二节点发送至少一个第四帧,并且,至少一个第四帧中的最后一个第四帧的结束时刻在该第三帧的结束时刻之前,该第一节点在接收完该第三帧之后,向该第三节点发送该第二帧,该第二帧为该第二确认帧,其中,该第一确认帧为该第二节点在该第二帧对应的时间区间之后相邻的时间区间内发送的;
也就是说,该第一确认帧为该第二节点对该第一帧和至少一个第四帧进行的确认,该第一确认帧为该第二节点在接收到该第二确认帧之后发送的。
具体而言,该第一节点在该第一帧之后,向该第二节点发送至少一个第四帧,至少一个第四帧中的每个该第二帧包括该第一指示信息。
此外,该第一节点在该第三帧之后,向该第三节点发送该第二确认帧。
可选地,该第二确认帧包括第二指示信息,该第二指示信息用于指示该第三节点在该第二确认帧之后的第一时间区间内,禁止向该第一节点发送下一帧。
具体地,如图12所示:
针对第一节点(A):
如果A可以继续发送一帧或发送更多的帧,则在MSG_A2直至MSG_Ai中,“ACK时间指示=0”。
其中,ACK帧可以包括针对MSG_A1、MSG_A2、…、MSG_Ai的确认信息。
同时,在A发送完MSG_Ai后,A向C发送ACK帧。可选地,ACK帧携带的“ACK结束指示=0”。
针对第二节点(B):
B接收完A发送的MSG_A1、MSG_A2、…、MSG_Ai后,根据“ACK时间指示=0”,在接收到A向C发送的ACK帧后,向A发送ACK帧。具体地,可以确定在MSG_C1帧之后的IFG1+ACK_DURATION+IFG2后,向A发送ACK帧。
针对第三节点(C):
由于A发送的ACK帧包括“ACK结束指示=0”。C可以确定在MSG_C1帧之后的IFG1+ACK_DURATION+IFG2+ACK_DURATION后,才可以向A发送下一帧。
可选地,若该第一节点在该第三帧的结束时刻之前能够开始向该第二节点发送该至 少一个第四帧,并且,至少一个第四帧中的最后一个第四帧的结束时刻在该第三帧的结束时刻之前,该第一节点在发送至少一个第四帧之后,向该第二节点发送该第二帧,该第二帧为该最后一个第四帧,该最后一个第四帧包括第四指示信息,该第四指示信息用于指示该第二节点在该第三帧对应的时间区间之后相邻的时间区间内,向该第一节点发送该第一确认帧。
也就是说,该第一确认帧为该第二节点对该第一帧和至少一个第四帧中的部分或者全部进行的确认,该第三帧对应的第二确认帧为该第一节点在该第三帧的结束时刻之后相邻的时间区间内发送的。
换句话说,该第二节点接收该第一节点发送的该第二帧,该第二帧为该最后一个第四帧,该最后一个第四帧包括第四指示信息,其中,该第四指示信息用于指示该第二节点在该第三帧的结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧。该第二节点根据该第四指示信息,在该第三帧的结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧。
应理解,本发明实施例中的第四指示信息的作用是用于指示该第二节点在该第三帧的结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧。但不应对该第四指示信息的具体形式进行限定。
例如,该第四指示信息可以包括该第二节点发送该第一确认帧的初始时刻。也就是说,第二节点接收到该最后一个第四帧后,在该最后一个第四帧中指示的该初始时刻上,向第一节点发送该第一确认帧。
又例如,该第四指示信息可以包括该第三帧的长度和△A1C1,其中,△A1C1为第一帧的初始时刻与该第三帧的初始时刻之间的差值。也就是说,第二节点接收到该最后一个第四帧后,根据该最后一个第四帧中的该第三帧的长度和△A1C1,确定该第三帧的结束时刻,并在该第三帧的结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧。
此外,在本发明实施例中,该第一确认帧和该第二确认帧可以在同一时间区间发送。
可选地,若该第一节点在该第三帧的结束时刻之前不能够开始向该第二节点发送至少一个第四帧;该第一节点在接收完该第三帧之后,向该第三节点发送该第二帧,该第二帧为该第二确认帧。
也就是说,该第一确认帧为该第二节点在该第二确认帧对应的时间区间之后相邻的时间区间内发送的。
这种情况下,第一节点、第二节点和第三节点之间的交互过程和图8类似,为避免重复,在此不作赘述。
可选地,若该第一节点在该第三帧的结束时刻之前不能够开始向该第二节点发送至少一个第四帧;该第一节点在该第一帧之后,向该第二节点发送该第二帧,该第二帧为确认请求帧或者确认请求符号,用于请求该第二节点向该第一节点发送该第一确认帧。
也就是说,其中,该第一确认帧为该第二节点在该第三帧对应的时间区间之后相邻的时间区间内发送的,其中,该第二确认帧为该第一节点在该第三帧的结束时刻之后相邻的时间区间内发送的。
具体地,如图13所示:
针对第一节点(A):
如果A不能继续发送下一帧,则可以在C发送的MSG_C1结束前,即△A1C1+C1_DURATION前,发送“ACK请求帧”。该“ACK请求帧”应在△A1C1+C1_DURATION前发送完成,用于指示B在△A1C1+C1_DURATION+IFG1后,向A发送ACK帧。A在接收完C发送的MSG_C1后,进行ACK。可选地,ACK帧携带“ACK结束指示=0”。
针对第二节点(B):
B接受完“ACK请求帧”之后,在△A1C1+C1_DURATION+IFG1后,向A发送ACK帧。
针对第三节点(C):
C在发送完MSG_C1后,接收A发送的MSG_C1的ACK。
其中,“ACK请求帧”可以只有物理帧的帧头(与ACK帧类似),其中,携带相关的字段,指示B在△A1C1+C1_DURATION+IFG1后向A发送ACK帧。
应理解,该“ACK请求帧”可以在MSG_A1发送完后,IFG1开始前的任意时间发送完成即可。
应注意,上述实施例只是本发明实施例的示例性说明,本领域技术人员在上述技术方案的基础上在不经过创造力劳动的前提下扩展的技术方案,都属于本发明实施例的保护范围。
例如,如图14所示,为了进一步减少了带宽资源的浪费,提高带宽资源利用率。
图13中的“ACK请求帧”也可以替换成一个或者多个“ACK请求符号”,该符号本身就用于指示B在收到该“ACK请求符号”后向A发送ACK帧,或者,指示B在收到该“ACK请求符号”后的IFG1后发送。
但是,由于该“ACK请求符号”本身无法携带比特信息,所以要求该符号必须在IFG1开始前的紧挨着的1个或多个时隙(TS)内发送。
又例如,若该第一节点在该第一节点在该第三帧之前能够向该第二节点发送至少一个第四帧,并且,至少一个第四帧中最后一个该第四帧的结束时刻在该第三帧的结束时刻之前;第一节点也可以通过“ACK指示符号”或“ACK请求帧”指示第二节点发送第一确认帧的起始时刻,以及指示第三节点可以发送下一帧的起始时刻。
在本发明实施例中,该第一节点需要确定在该第三帧的结束时刻之前是否能够开始向该第二节点发送至少一个第四帧,以及确定该第一节点在该第三帧之前能够向该第二节点发送至少一个第四帧的具体数量。
可选地,判断的规则可以如下所示:
如果(△A1C1+C1_DURATION-A1_DURATION)≥Threshold1,可以继续发送MSG_A2,直至MSG_Ai。
Ai的确定方法可以如下所示:
A1_DURATION+...+Ai_DURATION-△A1C1-C1_DURATION≤Threshold2。
其中,Threshold1、Threshold2可以是第一节点根据待发送信息确定的一个阈值,也可以是与配置的一个阈值,本发明实施例不做具体限定。
上面结合图7至图14对第一节点在发送第一帧的过程中接收第三节点发送的第三帧的场景进行了介绍。下面结合图15至图18针对第一节点在发送第一帧的过程中向第二节点发送第一帧的场景进行说明。
图15是本发明实施例的传输数据的方法200的示意性流程图。
如图15所示,该方法200包括:
210,第一节点在FDCFTXOP接收第三节点发送的第三帧。
220,该第一节点在接收该第三帧的过程中,向第二节点发送第一帧,该第一帧包括第一指示信息。
其中,该第一指示信息用于该第二节点根据该第一指示信息确定出第一时间区间,该第一时间区间为该第一节点用于接收该第一帧对应的第一确认帧的时间区间,该第一时间区间对应的初始时刻和第二时间区间的初始时刻相同,该第二时间区间为该第一节点用于发送第三帧对应的第二确认帧的时间区间。
由于A在C发送的过程中开始发送,因此,A可以侦听并检测到C发送的帧的帧头,进而可以确定第三帧的时长(duration),以及确定该第一帧的初始时刻和该第三帧的初始时刻之间的差值△C1A1。
具体而言,A接收来自C的MSG_C1帧,并解析C1_DURATION。A在解析出该C1_DURATION后,如果在C发送的MSG_C1帧结束前开始发送其MSG_A1帧,在MSG_A1帧中携带该第一指示信息。
为方便描述,下面针对本发明实施例中场景2下涉及的各种指示信息进行说明:
第二指示信息用于指示该第二节点在该第一帧的结束时刻或者在该第三帧的结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧,或者,该第二指示信息用于指示该第二节点在当前帧的结束时刻之后继续接收该第一节点发送的下一帧。
第三指示信息用于指示该第二节点在接收完当前帧之后继续接收该第一节点发送的下一帧。
第四指示信息用于指示该第二节点在该接收完最后一个第四帧或者该第三帧的结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧。
第五指示信息用于指示该第三节点在接收完该第二确认帧之后相邻的时间区间内,向该第一节点发送下一帧。
230,该第一节点根据该第一指示信息,接收该第二节点发送的该第一确认帧。
可选地,该第一指示信息包括该第三帧的时长,以及该第一帧的初始时刻和该第三帧的初始时刻之间的差值。
例如,若该第一节点根据该第一指示信息确定该第一帧的结束时刻在该第三帧的结束时刻之前,该第一节点在该第三帧的结束时刻之后的相邻的时间区间内接收该第二节点发送的该第一确认帧。
也就是说,若该第二节点根据该第一指示信息确定该第一帧的结束时刻在该第三帧的结束时刻之前,该第二节点在该第三帧结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧。
更具体地,如图16所示:
针对第一节点(A):
A在max{A1_DURATION+△C1A1,C1_DURATION}+IFG5后向C发送ACK帧,即在MSG_A1和MSG_C1帧较晚结束的帧后向C发送ACK帧,可选地,A向C发送ACK帧可以携带“ACK帧结束指示=0”,用于指示C在接收到A发送的ACK帧后,可以发送下一帧。
针对第二节点(B):
B接收到来自A发送的MSG_A1帧后,可以根据该第一指示信息确定max{A1_DURATION+△C1A1,C1_DURATION},即二者的较大者,并在max{A1_DURATION+△C1A1,C1_DURATION}+IFG5后向A发送ACK帧,即在MSG_A1和MSG_C1帧较晚结束的帧后向A发送ACK帧。
针对第三节点(C):
C在max{A1_DURATION+△C1A1,C1_DURATION}+IFG5后接收A发送的ACK帧,即在MSG_A1和MSG_C1帧较晚结束的帧后接收A发送的ACK帧,可选地,C根据ACK帧携带的“ACK帧结束指示=0”,可以确定出在接收到A发送的ACK帧后,可以发送下一帧。
又例如,若该第一节点根据该第一指示信息确定该第一帧的结束时刻在该第三帧的结束时刻之后,该第一节点在该第一帧的结束时刻之后的相邻的时间区间内接收该第二节点发送的该第一确认帧。
换句话说,若该第二节点根据该第一指示信息确定该第一帧的结束时刻在该第三帧的结束时刻之后,该第二节点在该第一帧结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧。
由于这种情况和该第一帧的结束时刻在该第三帧的结束时刻之前的情况类似,为避免重复,此处不做赘述。
可选地,该第一指示信息包括该第三帧的时长、该第一帧的初始时刻和该第三帧的初始时刻之间的差值△C1A1,以及第二指示信息。
其中,该第二指示信息用于指示该第二节点在该第一帧的结束时刻或者在该第三帧的结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧,或者,该第二指示信息用于指示该第二节点在当前帧的结束时刻之后继续接收该第一节点发送的下一帧。
例如,“第二指示信息=0”,用于指示该第二节点在当前帧或者该第三帧之后,向该第一节点发送该第一确认帧。“第二指示信息=1”,用于指示该第二节点在当前帧之后继续接收该第一节点发送的下一帧。
若该第一节点确定该第一帧的结束时刻在该第三帧的结束时刻之后,该第一节点在该第一帧的结束时刻之后相邻的时间区间内,接收该第二节点发送该第一确认帧。
换句话说,若该第二节点根据该第一指示信息确定该第一帧的结束时刻在该第三帧的结束时刻之后,该第二节点在该第一帧的结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧。
具体地,如果A1_DURATION+△C1A1≥C1_DURATION,则设置第二指示信息为0。也就是说,B接收完第一帧之后,能够根据该第二指示信息确定需要对该第一帧进行确认,并通过第一指示信息中的△C1A1、C1_DURATION,进一步确定在当前帧,即第一帧之后,向A发送ACK帧。
例如,如图17所示:
针对第一节点(A):
如果A1_DURATION+△C1A1≥C1_DURATION,则接收完成MSG_A1后的IFG5后发送ACK帧。
具体地,A接收来自C的MSG_C1帧,并解析C1_DURATION。A在解析出该C1_DURATION后,对比A1_DURATION+△C1A1和C1_DURATION。如果在C发送的MSG_C1帧结束前开始发送其MSG_A1帧,在MSG_A1帧中携带第一指示信息,该第一指示信息包括△C1A1、C1_DURATION以及第二指示信息。
针对第二节点(B):
B接收到来自A的MSG_A1帧,根据△C1A1、C1_DURATION以及第二指示信息,确定在MSG_A1后的IFG5后向A发送ACK帧。
若该第一节点确定该第一帧的结束时刻在该第三帧的结束时刻之前,该第一节点在该第三帧的结束时刻之后相邻的时间区间内,接收该第二节点发送该第一确认帧。
换句话说,若该第二节点根据该第一指示信息确定该第一帧的结束时刻在该第三帧的结束时刻之前,该第二节点在该第三帧结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧。
具体地,如果A1_DURATION+△C1A1≥C1_DURATION,则设置第二指示信息为0。也就是说,B接收完第一帧之后,能够根据该第二指示信息确定需要对该第一帧进行确认,并通过第一指示信息中的△C1A1、C1_DURATION,进一步确定在当前帧,即第三帧之后,向A发送ACK帧。
本发明实施例中,第二节点在接收到第一帧之后,能够根据第二指示信息确定需要或者不需要对第一帧在第一帧的结束时刻或者第三帧的结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧。
若第二节点确定需要在第一帧的结束时刻或者第三帧的结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧,根据第一指示信息中的第三帧的时长以及△C1A1,确定在第一帧的结束时刻还是第三帧的结束时刻之后的结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧。
具体而言,若该第一节点确定该第一帧的结束时刻在该第三帧的结束时刻之后,该第一节点在该第一帧的结束时刻之后相邻的时间区间内,接收该第二节点发送该第一确认帧;或者,若该第一节点确定该第一帧的结束时刻在该第三帧的结束时刻之前,该第一节点在该第三帧的结束时刻之后相邻的时间区间内,接收该第二节点发送该第一确认帧。
可选地,若该第一帧的结束时刻在该第三帧的结束时刻之前,该第一节点接收该第二节点发送的该第一确认帧之前,该第一节点根据该第三帧的时长,判断在该第三帧的结束时刻之前是否能够开始向该第二节点发送至少一个第四帧;若该第一节点确定在该第三帧的结束时刻之前能够开始向该第二节点发送该至少一个第四帧,该第一节点在发送该第一帧之后,向该第二节点发送该至少一个第四帧。
具体地,如果A1_DURATION+△C1A1<C1_DURATION,则A判断是否可以继续发送一帧或更多的帧,并在最后发送的MSG_Ai帧中,“第二指示信息=0”,MSG_A1、…、MSG_Ai-1中,“第二指示信息=1”。
也就是说,本发明实施例中的A根据侦听解析到的C发送的帧,通过在自己发送的帧携带指示信息,指示B如何ACK,从而避免B发送的ACK与其他传输冲突,同时让A尽可能地利用资源发送其数据,提高带宽资源利用率,避免资源浪费。
可选地,若该第一节点在该第一确认帧之前不能够向该第二节点发送该至少一个第 四帧,该第一节点在该第三帧的结束时刻之后相邻的时间区间内,接收该第二节点发送的该第一确认帧,其中,该第一帧中的该第二指示信息用于指示该第二节点在该第三帧的结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧。
可以理解,这时第一帧中包括“第二指示信息=0”。
换句话说,若该第二节点根据该第一指示信息确定该第一帧的结束时刻在该第三帧的结束时刻之前,该第二节点根据“第二指示信息=0”,在该第三帧结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧。
即,如果A1_DURATION+△C1A1<C1_DURATION,第二节点判断“第二指示信息”是否为0,如果是0,则第二节点根据判断结果在C1_DURATION结束后的IFG5后发送ACK帧。
可选地,若该第一节点在该第三帧之前能够向该第二节点发送该至少一个第四帧,该第一节点在发送完该最后一个第四帧或者接收完该第三帧之后相邻的时间区间内,接收该第二节点发送的该第一确认帧;其中,该第一帧中的该第二指示信息用于指示该第二节点在接收完当前帧之后继续接收该第一节点发送的下一帧,该至少一个第四帧中除最后一个第四帧之外的每个第四帧中包括第三指示信息,该第三指示信息用于指示该第二节点在接收完当前帧之后继续接收该第一节点发送的下一帧,该最后一个第四帧中包括第四指示信息,该第四指示信息用于指示该第二节点在该接收完最后一个第四帧或者该第三帧的结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧。
换句话说,该第二节点在接收完该第一帧之后,接收该第一节点发送的至少一个第四帧,该至少一个第四帧中除最后一个第四帧之外的每个第四帧中包括第三指示信息,该第三指示信息用于指示该第二节点在接收完当前帧之后继续接收该第一节点发送的下一帧,该最后一个第四帧中包括第四指示信息,该第四指示信息用于指示该第二节点在该最后一个第四帧的结束时刻或者该第三帧结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧。
具体地,若该最后一个第四帧的结束时刻在该第三帧的结束时刻之前,该第二节点在该第三帧结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧;或者,若该最后一个第四帧的结束时刻在该第三帧的结束时刻之后,该第二节点在接收完该最后一个第四帧之后相邻的时间区间内,向该第一节点发送该第一确认帧。
可以理解,这时第一帧包括“第二指示信息=1”。
例如,如图18所示:
针对第一节点(A):
如果A1_DURATION+△C1A1<C1_DURATION,判断在该MSG_C1之前能够向该第二节点发送该至少一个第四帧,如果可以,则继续发送的下一帧;直到最后一个MSG_Ai帧的“第二指示信息=0”。
针对第二节点(B):
如果A1_DURATION+△C1A1<C1_DURATION,判断“第二指示信息”是否为0,如果是1,则继续接收A发送的下一帧;直到“第二指示信息”为0的MSG_Ai帧,并根据MSG_Ai帧的结束时刻和第三帧的结束时刻,确定向A发送ACK帧的起始时刻。
可选地,该方法200还包括:
该第一节点根据该第一指示信息,向该第三节点发送该第二确认帧,该第二确认帧 包括第五指示信息,该第五指示信息用于指示该第三节点在该第二确认帧之后,可以向该第一节点发送下一帧。
可选地,第二确认帧和第一确认帧的起始时刻相同,能够有效节省时域资源,提高带宽资源利用率。
下面结合图19至图24针对第一节点在发送第一帧的同时向第二节点发送第一帧的场景进行说明。
图19是本发明实施例的传输数据的方法300的示意性流程图。
如图19所示,该方法300包括:
310,该第一节点获取确认帧传输信息。
其中,该确认帧传输信息包括第一时间区间的起始时刻和第二时间区间的起始时刻,该第一时间区间为该第一节点用于接收第二节点发送的第一帧对应的第一确认帧的时间区间,该第二时间区间为该第一节点用于向第三节点发送第三帧对应的第二确认帧的时间区间;或者,该确认帧传输信息包括该第二节点使用的频段信息和该第三节点使用的频段信息。
可选地,该第一节点在建立通信链路过程中,通过与该第二节点、该第三节点进行协商,获取该确认帧传输信息;或者,第一节点接收域主节点DM发送的媒体接入计划(Media Access Plan,MAP)帧,该MAP帧包括该确认帧传输信息。
320,第一节点在FDCFTXOP上向第二节点发送第一帧。
330,该第一节点在该FDCFTXOP上接收第三节点发送的第三帧。
340,该第一节点根据该确认帧传输信息,接收该第一确认帧和发送该第二确认帧。
作为一个实施例,该确认帧传输信息包括第一时间区间的起始时刻和第二时间区间的起始时刻,该第一时间区间的起始时刻和该第二时间区间的起始时刻相同,进而保证发送ACK帧时,不会与其他传输造成冲突,另外还可以提高带宽资源利用率。
也就是说,该第一节点在该确认帧传输信息指示的初始时刻,接收该第一确认帧和发送该第二确认帧。
应理解,ACK帧发送时间之前,C或A可能都没有发送MSG帧,也可能只有其中一个发送了MSG帧。无论C或A发没发MSG帧,这个约定的ACK帧的发送时间是客观存在的。
还应理解,该确认帧传输信息中该第一确认帧的初始时刻和该第二确认帧的初始时刻可以在一个FDCFTXOP全部预先确定好,也可以只预先确定一个FDCFTXOP中的部分资源。
例如,该第一帧或者该第一确认帧包括第一指示信息,该第一指示信息用于指示该第三节点在发送该第三帧之后向该第一节点发送的下一帧的最大时长;或者,该第一指示信息用于指示该第三节点在发送该第三帧之后向该第一节点发送的下一帧对应的确认帧对应的时间区间的初始时刻。
具体而言,如图20所示,第一个MSG_A1中,A应携带“允许C发送的下一帧的最大帧长”,C所发送的下一帧的MSG_C2的帧长(C2_DURATION)应小于或等于该“允许C发送的下一帧的最大帧长”。B和C对A发送的帧MSG_Ai进行侦听。
又例如,如图21所示,A在针对第一个MSG_C1的ACK帧中,A携带“允许C发送的下一帧的最大帧长”,C所发送的下一帧的MSG_C2的帧长(C2_DURATION)应 小于或等于该“允许C发送的下一帧的最大帧长”。B和C对A发送的ACK帧(针对MSG_C1帧的确认)进行侦听。
也就是说,在图20和图21中,A和B在“允许C发送的下一帧的最大帧长”+IFG6后,分别对接收到的帧(MSG_C2、MSG_A2)进行确认,发送ACK帧。
需要注意的是,本发明实施例中C发送自己的MSG_C2时,应设定帧长在允许的范围内。
应理解,该“允许C发送的下一帧的最大帧长”的获取方式很多,例如,A根据自己发送的帧的时长确定不大于该时长的一个值等等。本发明实施例不做具体限定。
作为另一个实施例,通过采用不同的频段,使得第一节点在同时接收到第二节点的确认帧和第三节点的数据帧时,能够避免冲突。
可选地,该确认帧传输信息包括数据帧对应的第一频段和确认帧对应的第二频段,该第一频段和该第二频段不重叠。
也就是说,该第一节点在该第二频段上,接收该第一确认帧和发送该第二确认帧,该第一节点通过该第一频段向该第二节点发送该第一帧,以及通过该第一频段接收该第三节点发送的该第三帧。
本发明实施例中,数据帧和ACK帧通过两个独立的“信道”发送,从而避免B发送的ACK与其他传输冲突,同时让A尽可能地利用资源发送其数据,避免资源浪费,另外还可以提高带宽资源利用率。
具体而言,如图22所示,A和C可任意安排其MSG帧的发送,可连续发送(帧之间加入帧间间隔IFG)。
进一步地,数据帧对应第二调制方式,确认帧对应第一调制方式,该第一调制方式可以包括开关键控(On-Off Keying,OOK)调制方式、多脉冲位置(Multi-Pulse Position Modulation,MPPM)调制方式等等,该第二调制方式可以包括非对称限幅光正交频分复用(ACO-OFDM)调制方式或者直流偏置光正交频分复用(DCO-OFDM)调制方式等等。
应理解,上述调制方式仅是示例性说明,本发明实施例不作具体限定。
可选地,该确认帧传输信息包括该第二节点用于发送该第一确认帧使用的第一频段,以及,该第三节点用于发送该第三帧使用的第二频段,该第一频段和该第二频段不重叠。
具体而言,该第一节点在该第一频段上,接收该第一确认帧;该第一节点在该第一频段和该第二频段上,发送该第二确认帧。
由于第三帧的频段和第一确认帧的频段不重叠,同时,第一帧的频段与第二确认帧的频段不重叠,因此,第一节点在同时接收到数据帧和确认帧时,能够正常进行解码,避免传输冲突。
如图23所示,A和C可同时发送其MSG帧,并连续发送后续的帧(帧之间加入帧间间隔IFG)。
可选地,在本发明实施例中,该第一节点在FDCFTXOP上向第二节点发送第一帧之前,第一节点发送该第一帧前,确定是否存在接收完成但未进行确认的来自第三节点的至少一个第二帧;若存在该至少一个第二帧,将该至少一个第二帧中部分或者全部第二帧对应的确认信息添加到该第一帧中。
即,A每发送一个帧前,确定是否有接收完成但未ACK的来自C的帧,如果有,则在要发送的MSG帧的帧头,携带相应的ACK信息。
可选地,该第一节点在该第三帧之后,接收该第三节点发送的连续多个第一数据帧,该连续多个第一数据帧中的最后一个数据帧中包括第二指示信息,该第二指示信息用于指示该第一节点当前帧为最后一个数据帧;该第一节点根据该第二指示信息确定当前帧为最后一个数据帧时,向该第三节点发送至少一个确认帧,该至少一个确认帧为该第一节点对未进行确认的来自第三节点的数据帧进行的确认;该第一节点在该第一帧之后,向该第二节点发送连续多个第二数据帧。
具体而言,如果A先结束传输,则应在最后一帧中指示为“最后一帧”,并对随后收到的来自C的数据帧,通过发送ACK帧的方式来确认。即,C可以在最后一帧中指示“最后一帧”,以便于A确定如何ACK。
例如,如图23所示,A可以把针对MSG_C5和MSG_C6的确认信息放在一个ACK帧中。
可选地,该第二节点对应第一调制方式,该第三节点对应第二调制方式,该第一调制方式可以包括开关键控(On-Off Keying,OOK)调制方式、多脉冲位置(Multi-Pulse Position Modulation,MPPM)调制方式等等,该第二调制方式可以包括非对称限幅光正交频分复用(ACO-OFDM)调制方式、直流偏置光-正交频分复用(DCO-OFDM)调制方式等等。
应理解,上述调制方式仅是示例性说明,本发明实施例不作具体限定。
还应理解,本发明方案所针对的光无线通信,如可见光通信或红外通信,都是采用强度调制的方式。虽然采用的是可见光频段或红外频段,但是只是利用光强的变化来传输数据。
但是,本发明实施例中,B和C可以是在同时采用红外通信或同时采用可见光通信的基础上,又从调制带宽的角度去进行的划分。
例如,一个可见光LED的调制带宽可能是10MHz,频域可以分为0-1MHz和1MHz-10MHz两部分。而实际B和C都是采用的可见光通信。
应理解,上述实施例仅结合第一帧中的第一指示信息或者确认帧传输信息对本发明实施例的传输数据的方法进行了示例性说明,本发明实施例不限于此。例如,FDCFTXOP中帧的确认方式可以设置为第一节点向第三节点发送的第二确认帧用于隐式指示第二节点向第一节点发送第一确认帧。
可选地,第一节点在全双工无竞争的传输机会FDCFTXOP中向第二节点发送第一帧并接收第三节点发送的第三帧;该第一节点在发送完该第一帧后向该第三节点发送第二确认帧,该第二确认帧为该第一节点对该第三帧进行的确认;该第一节点在发送完该第二确认帧之后,接收该第二节点发送的该第一确认帧,该第一确认帧为该第一节点对该第一帧的进行确认。
如图24所示,A向B发送第一帧,同时,接收C发送的第三帧;在发送完该第一帧后向该C发送第二确认帧;该A在发送完该第二确认帧之后,接收该第二节点发送的该第一确认帧。
也就是说,针对B,A发送给C的第二确认帧本身可以用于指示B在第二确认帧之后相邻的时间区间内,对第一帧进行确认。
可选地,该第一节点在发送完该第一帧后,向该第三节点发送第二确认帧之前,该方法还包括:
该第一节点判断是否已接收完该第三节点发送的该第三帧,若该第一节点已接收完该第三节点发送的该第三帧,该第一节点在该第一帧对应的时间区间后相邻的时间区间内向该第三节点发送第二确认帧;或者,若该第一节点没有接收完该第三节点发送的该第三帧,该第一节点在该第三帧对应的时间区间后的相邻的时间区间内向该第三节点发送第二确认帧。
上面结合图7至图24对本发明实施例的传输数据的方法进行了介绍,下面对本发明实施例的装置进行说明。
图25是本发明实施例的传输数据的装置的示意性框图。
本发明实施例,提供了一种传输数据的装置,如图25所示,该装置包括收发单元410,该收发单元410用于:
在FDCFTXOP中向第二节点发送第一帧,该第一帧包括第一指示信息;
其中,该第一指示信息用于指示该第二节点在接收完第二帧之后,向该装置发送该第一帧对应的第一确认帧;
发送该第二帧;
在发送完该第二帧之后,接收该第二节点发送的该第一确认帧。
可选地,若该装置在该第一帧对应的时间区间内,未接收到第三节点发送的第三帧;
该收发单元410具体用于:
在发送该第一帧之后,向该第三节点发送该第二帧,该第二帧包括第二指示信息,该第二指示信息用于指示该第三节点在该第二帧对应的时间区间之后相邻的时间区间内,禁止向该装置发送下一帧,其中,该第一确认帧为该第二节点在该第二帧对应的时间区间之后相邻的时间区间内发送的;
或者,
在发送该第一帧之后,向该第二节点发送该第二帧,该第二帧为确认请求帧或者确认请求符号,用于请求该第二节点向该装置发送该第一确认帧,其中,该第一确认帧为该第二节点在该确认请求帧或者该确认请求符号对应的时间区间之后相邻的时间区间内发送的。
可选地,若该装置在该第一帧对应的时间区间内,能够接收到第三节点发送的第三帧;
该收发单元410具体用于:
若该装置确定该第一帧的结束时刻在该第三帧的结束时刻之后,该装置在发送该第一帧之后,向该第三节点发送该第二帧,该第二帧为该第三帧对应的第二确认帧,其中,该第一确认帧为该第二节点在该第二帧对应的时间区间之后相邻的时间区间内发送的;
或者,
若该装置确定该第一帧的结束时刻在该第三帧的结束时刻之前,该装置在发送该第三帧之后,向该第三节点发送该第二帧,该第二帧为该第三帧对应的第二确认帧,其中,该第一确认帧为该第二节点在该第二帧对应的时间区间之后相邻的时间区间内发送的。
可选地,若该装置在该第一帧对应的时间区间内,能够接收到第三节点发送的第三帧,并且,该第一帧的结束时刻在该第三帧的结束时刻之前;
该装置发送该第二帧之前,该装置还包括处理单元,该处理单元用于:
根据该第三帧的时长,判断在该第三帧的结束时刻之前是否能够开始向该第二节点 发送至少一个第四帧;
若该装置确定在该第三帧的结束时刻之前能够开始向该第二节点发送该至少一个第四帧,该装置在发送该第一帧之后,向该第二节点发送该至少一个第四帧。
可选地,若该装置在该第三帧的结束时刻之前能够开始向该第二节点发送该至少一个第四帧,并且,该至少一个第四帧中的最后一个第四帧的结束时刻在该第三帧的结束时刻之后,
该收发单元410具体用于:
向该第二节点发送该第二帧,该第二帧为该最后一个第四帧,该最后一个第四帧包括第三指示信息,其中,该第三指示信息用于指示该第二节点在该第二帧对应的时间区间之后相邻的时间区间内,向该装置发送该第一确认帧,该第一确认帧为该第二节点对该第一帧和该至少一个第四帧中的部分或者全部进行的确认,该第三帧对应的第二确认帧为该装置在该第二帧对应的时间区间之后相邻的时间区间内发送的。
可选地,若该装置在该第三帧的结束时刻之前能够开始向该第二节点发送该至少一个第四帧,并且,该至少一个第四帧中的最后一个第四帧的结束时刻在该第三帧的结束时刻之前,
该收发单元410具体用于:
在接收完该第三帧之后,向该第三节点发送该第二帧,该第二帧为该第二确认帧,其中,该第一确认帧为该第二节点在该第二帧对应的时间区间之后相邻的时间区间内发送的;
或者,
在发送该至少一个第四帧之后,向该第二节点发送该第二帧,该第二帧为该最后一个第四帧,该最后一个第四帧包括第四指示信息,该第四指示信息用于指示该第二节点在该第三帧对应的时间区间之后相邻的时间区间内,向该装置发送该第一确认帧,该第一确认帧为该第二节点对该第一帧和该至少一个第四帧中的部分或者全部进行的确认,该第三帧对应的第二确认帧为该装置在该第三帧的结束时刻之后相邻的时间区间内发送的。
可选地,若该装置在该第三帧的结束时刻之前不能够开始向该第二节点发送该至少一个第四帧;
该收发单元410具体用于:
在接收完该第三帧之后,向该第三节点发送该第二帧,该第二帧为该第二确认帧,其中,该第一确认帧为该第二节点在该第二确认帧对应的时间区间之后相邻的时间区间内发送的;
或者,
在该第一帧之后,向该第二节点发送该第二帧,该第二帧为确认请求帧或者确认请求符号,用于请求该第二节点向该装置发送该第一确认帧,其中,该第一确认帧为该第二节点在该第三帧对应的时间区间之后相邻的时间区间内发送的,其中,该第二确认帧为该装置在该第三帧的结束时刻之后相邻的时间区间内发送的。
本发明实施例,提供了一种传输数据的装置,如图25所示,该装置包括收发单元410,该收发单元410用于:
在FDCFTXOP中接收第一节点发送的第一帧,该第一帧包括第一指示信息;
其中,该第一指示信息用于指示该装置在接收完第二帧之后,向该第一节点发送该第一帧对应的第一确认帧;
接收该第二帧;
在接收完该第二帧之后,向该第一节点发送该第一确认帧。
可选地,该收发单元410具体用于:
接收该第一节点发送该第二帧,该第二帧为确认请求帧或者确认请求符号,用于请求该装置向该第一节点发送该第一确认帧,其中,该第一确认帧为该装置在该确认请求帧或者确认请求符号对应的时间区间之后相邻的时间区间内发送的,或者,所述第一确认帧为所述第二节点在第三帧对应的时间区间之后相邻的时间区间内发送的,所述第三帧为第三节点向所述第一节点发送的;
或者,
接收该第一节点向该第三节点发送的该第二帧,该第二帧为第二确认帧,该第一确认帧为该装置在该第二确认帧对应的时间区间之后相邻的时间区间内发送的。
可选地,若该装置在接收到该第二帧之前,能够接收到该第一节点发送的至少一个第四帧,该收发单元410具体用于:
根据该至少一个第四帧中的指示信息或者第二确认帧,向该第一节点发送该第一确认帧,其中,该第二确认帧为该第一节点向第三节点发送的第三帧对应的确认帧。
可选地,该收发单元410具体用于:
接收该第一节点发送的该第二帧,该第二帧为该至少一个第四帧中的最后一个第四帧,该最后一个第四帧包括第三指示信息,其中,该第三指示信息用于指示该装置在该第二帧对应的时间区间之后相邻的时间区间内,向该第一节点发送该第一确认帧,该第一确认帧为该装置对该第一帧和该至少一个第四帧中的部分或者全部进行的确认;
或者,
接收该第二帧,该第二帧为该第二确认帧,该第一确认帧为该装置对该第一帧和该至少一个第四帧中的部分或者全部进行的确认,该第一确认帧为该装置在该第二确认帧对应的时间区间之后相邻的时间区间内发送的;
或者,
该装置接收该第一节点发送的该第二帧,该第二帧为该最后一个第四帧,该最后一个第四帧包括第四指示信息,其中,该第四指示信息用于指示该装置在该第三帧的结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧,该第一确认帧为该装置对该第一帧和该至少一个第四帧中的部分或者全部进行的确认。
本发明实施例,提供了一种传输数据的装置,如图25所示,该装置包括收发单元410,该收发单元410用于:
在FDCFTXOP中接收第三节点发送的第三帧;
在接收该第三帧的过程中,向第二节点发送第一帧,该第一帧包括第一指示信息;
其中,该第一指示信息用于该第二节点根据该第一指示信息确定出第一时间区间,该第一时间区间为该装置用于接收该第一帧对应的第一确认帧的时间区间,该第一时间区间对应的初始时刻和第二时间区间的初始时刻相同,该第二时间区间为该装置用于发送第三帧对应的第二确认帧的时间区间;
根据该第一指示信息,接收该第二节点发送的该第一确认帧。
可选地,该第一指示信息包括该第三帧的时长,以及该第一帧的初始时刻和该第三帧的初始时刻之间的差值;
其中,该收发单元410具体用于:
若该装置根据该第一指示信息确定该第一帧的结束时刻在该第三帧的结束时刻之前,在该第三帧的结束时刻之后的相邻的时间区间内接收该第二节点发送的该第一确认帧;
或者,
若该装置根据该第一指示信息确定该第一帧的结束时刻在该第三帧的结束时刻之后,在该第一帧的结束时刻之后的相邻的时间区间内接收该第二节点发送的该第一确认帧。
可选地,该第一指示信息包括该第三帧的时长、该第一帧的初始时刻和该第三帧的初始时刻之间的差值,以及第二指示信息,该第二指示信息用于指示该第二节点在该第一帧的结束时刻或者在该第三帧的结束时刻之后相邻的时间区间内,向该装置发送该第一确认帧,或者,该第二指示信息用于指示该第二节点在当前帧的结束时刻之后继续接收该装置发送的下一帧;
其中,该收发单元410具体用于:
若该装置确定该第一帧的结束时刻在该第三帧的结束时刻之后,该装置在该第一帧的结束时刻之后相邻的时间区间内,接收该第二节点发送该第一确认帧;
或者,
若该装置确定该第一帧的结束时刻在该第三帧的结束时刻之前,该装置在该第三帧的结束时刻之后相邻的时间区间内,接收该第二节点发送该第一确认帧;
或者,
若该装置确定该第一帧的结束时刻在该第三帧的结束时刻之前,该接收该第二节点发送的该第一确认帧之前,该装置还包括处理单元,该处理单元用于:
根据该第三帧的时长,判断在该第三帧的结束时刻之前是否能够开始向该第二节点发送至少一个第四帧;
若该装置确定在该第三帧的结束时刻之前能够开始向该第二节点发送该至少一个第四帧,该装置在发送该第一帧之后,向该第二节点发送该至少一个第四帧。
可选地,该第一帧的结束时刻在该第三帧的结束时刻之前;
该收发单元410具体用于:
若该装置在该第一确认帧之前不能够向该第二节点发送该至少一个第四帧,在该第三帧的结束时刻之后相邻的时间区间内,接收该第二节点发送的该第一确认帧,其中,该第一帧中的该第二指示信息用于指示该第二节点在该第三帧的结束时刻之后相邻的时间区间内,向该装置发送该第一确认帧;
或者,
若该装置在该第三帧之前能够向该第二节点发送该至少一个第四帧,在发送完该最后一个第四帧或者接收完该第三帧之后相邻的时间区间内,接收该第二节点发送的该第一确认帧;其中,该第一帧中的该第二指示信息用于指示该第二节点在接收完当前帧之后继续接收该装置发送的下一帧,该至少一个第四帧中除最后一个第四帧之外的每个第四帧中包括第三指示信息,该第三指示信息用于指示该第二节点在接收完当前帧之后继 续接收该装置发送的下一帧,该最后一个第四帧中包括第四指示信息,该第四指示信息用于指示该第二节点在该接收完最后一个第四帧或者该第三帧的结束时刻之后相邻的时间区间内,向该装置发送该第一确认帧。
可选地,该第二确认帧包括第五指示信息,该第五指示信息用于指示该第三节点在接收完该第二确认帧之后相邻的时间区间内,向该装置发送下一帧。
本发明实施例,提供了一种传输数据的装置,如图25所示,该装置包括收发单元410,该收发单元410用于:
在FDCFTXOP中接收第一节点发送的第一帧,该第一帧包括第一指示信息;
其中,该第一指示信息用于该装置根据该第一指示信息确定第一时间区间,该第一时间区间为该第一节点用于接收该第一帧对应的第一确认帧的时间区间,该第一时间区间对应的初始时刻和第二时间区间的初始时刻相同,该第二时间区间为该第一节点用于发送第三帧对应的第二确认帧的时间区间;
根据该第一指示信息,向该第一节点发送该第一确认帧。
可选地,该第一指示信息包括该第三帧的时长,以及该第一帧的初始时刻和该第三帧的初始时刻之间的差值;
其中,该收发单元410具体用于:
若该装置根据该第一指示信息确定该第一帧的结束时刻在该第三帧的结束时刻之前,在该第三帧结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧;
或者,
若该装置根据该第一指示信息确定该第一帧的结束时刻在该第三帧的结束时刻之后,在该第一帧结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧。
可选地,该第一指示信息包括该第三帧的时长、该第一帧的初始时刻和该第三帧的初始时刻之间的差值,以及第二指示信息,其中,该第二指示信息用于指示该装置在该第一帧的结束时刻或者该第三帧的结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧;
其中,该收发单元410具体用于:
若该装置根据该第一指示信息确定该第一帧的结束时刻在该第三帧的结束时刻之后,在该第一帧的结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧;
或者,
若该装置根据该第一指示信息确定该第一帧的结束时刻在该第三帧的结束时刻之前,在该第三帧结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧。
可选地,该第一指示信息包括该第三帧的时长、该第一帧的初始时刻和该第三帧的初始时刻之间的差值,以及第二指示信息,该第二指示信息用于指示该装置在当前帧之后继续接收该第一节点发送的下一帧;
该向该第一节点发送该第一确认帧之前,该收发单元410还用于:
该装置在接收完该第一帧之后,接收该第一节点发送的至少一个第四帧,该至少一个第四帧中除最后一个第四帧之外的每个第四帧中包括第三指示信息,该第三指示信息用于指示该装置在接收完当前帧之后继续接收该第一节点发送的下一帧,该最后一个第四帧中包括第四指示信息,该第四指示信息用于指示该装置在该最后一个第四帧的结束时刻或者该第三帧结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧;
若该最后一个第四帧的结束时刻在该第三帧的结束时刻之前,在该第三帧结束时刻之后相邻的时间区间内,向该第一节点发送该第一确认帧;
或者,
若该最后一个第四帧的结束时刻在该第三帧的结束时刻之后,在接收完该最后一个第四帧之后相邻的时间区间内,向该第一节点发送该第一确认帧。
本发明实施例,提供了一种传输数据的装置,如图26所示,该装置包括:
获取单元510,用于获取确认帧传输信息;
其中,该确认帧传输信息包括第一时间区间的起始时刻和第二时间区间的起始时刻,该第一时间区间为该装置用于接收第二节点发送的第一帧对应的第一确认帧的时间区间,该第二时间区间为该装置用于向第三节点发送第三帧对应的第二确认帧的时间区间;或者,该确认帧传输信息包括该第二节点使用的频段信息和该第三节点使用的频段信息;
收发单元520,该收发单元520用于:
在FDCFTXOP中向第二节点发送第一帧;
在该FDCFTXOP中接收第三节点发送的第三帧;
根据该确认帧传输信息,接收该第一确认帧和发送该第二确认帧。
可选地,该确认帧传输信息包括第一时间区间的起始时刻和第二时间区间的起始时刻,该第一时间区间的起始时刻和该第二时间区间的起始时刻相同;
其中,该收发单元520具体用于:
在该确认帧传输信息指示的初始时刻,接收该第一确认帧和发送该第二确认帧。
可选地,该第一帧或者该第一确认帧包括第一指示信息,该第一指示信息用于指示该第三节点在发送该第三帧之后向该装置发送的下一帧的最大时长;或者,该第一指示信息用于指示该第三节点在发送该第三帧之后向该装置发送的下一帧对应的确认帧对应的时间区间的初始时刻。
可选地,该确认帧传输信息包括数据帧对应的第一频段和确认帧对应的第二频段,该第一频段和该第二频段不重叠;
其中,该收发单元520具体用于:
在该第二频段上,接收该第一确认帧和发送该第二确认帧,该装置通过该第一频段向该第二节点发送该第一帧,以及通过该第一频段接收该第三节点发送的该第三帧。
可选地,该确认帧传输信息包括该第二节点用于发送该第一确认帧使用的第一频段,以及,该第三节点用于发送该第三帧使用的第二频段,该第一频段和该第二频段不重叠;
其中,该收发单元520具体用于:
在该第一频段上,接收该第一确认帧;
在该第一频段和该第二频段上,发送该第二确认帧。
可选地,该装置在FDCFTXOP上向第二节点发送第一帧之前,该装置还包括:
处理单元,用于发送该第一帧前,确定是否存在接收完成但未进行确认的来自第三节点的至少一个第二帧;
若存在该至少一个第二帧,将该至少一个第二帧中部分或者全部第二帧对应的确认信息添加到该第一帧中。
可选地,该收发单元520具体用于:
在该第三帧之后,接收该第三节点发送的连续多个第一数据帧,该连续多个第一数 据帧中的最后一个数据帧中包括第二指示信息,该第二指示信息用于指示该装置当前帧为最后一个数据帧;
根据该第二指示信息确定当前帧为最后一个数据帧时,向该第三节点发送至少一个确认帧,该至少一个确认帧为该装置对未进行确认的来自第三节点的数据帧进行的确认;
在该第一帧之后,向该第二节点发送连续多个第二数据帧。
可选地,数据帧之间包括帧间隔。
可选地,该第一频段对应普通基带调制方式,该第二频段对应基带多载波调制方式,该普通基带调制方式包括OOK调制方式或者MPPM调制方式,该基带多载波调制方式包括ACO-OFDM调制方式或者DCO-OFDM调制方式。
可选地,该获取单元510具体用于:
在建立通信链路过程中,通过与该第二节点、该第三节点进行协商,获取该确认帧传输信息;或者,装置接收DM发送的MAP帧,该MAP帧包括该确认帧传输信息。
本发明实施例,提供了一种传输数据的装置,如图26所示,该装置包括:
获取单元510,用于获取确认帧传输信息,
其中,该确认帧传输信息包括第一时间区间的起始时刻和第二时间区间的起始时刻,该第一时间区间为该第一节点用于接收装置发送的第一帧对应的第一确认帧的时间区间,该第二时间区间为该第一节点用于向第三节点发送第三帧对应的第二确认帧的时间区间;或者,该确认帧传输信息包括该装置使用的频段信息和该第三节点使用的频段信息;
收发单元520,该收发单元520用于:
在FDCFTXOP中接收第一节点发送的第一帧;
根据该确认帧传输信息,向该第一节点发送该第一确认帧。
可选地,该确认帧传输信息包括该第一确认帧的起始时刻,该第一确认帧的初始时刻和第二确认帧的初始时刻相同,其中,该第二确认帧为该第一节点对第三节点发送的第三帧进行的确认;
其中,该收发单元520具体用于:
在该确认帧传输信息指示的初始时刻,向该第一节点发送该第一确认帧。
可选地,该第一帧或者该第一确认帧还包括第一指示信息,该第一指示信息用于指示该第三节点在发送该第三帧之后向该第一节点发送的下一帧的最大时长;或者,该第一指示信息用于指示该第三节点在发送该第三帧之后向该第一节点发送的下一帧对应的确认帧对应的时间区间的初始时刻。
可选地,该确认帧传输信息包括数据帧对应的第一频段和确认帧对应的第二频段,该第一频段和该第二频段不重叠;
其中,该收发单元520具体用于:
在该第二频段上,向该第一节点发送该第一确认帧,该装置通过该第一频段接收该第一节点发送的该第一帧。
可选地,该确认帧传输信息包括该装置用于发送该第一确认帧使用的第一频段,以及,该第三节点用于发送该第三帧使用的第二频段,该第一频段和该第三节点使用的第二频段不重叠;
其中,该收发单元520具体用于:
在该第一频段上,向该第一节点发送该第一确认帧;
在该第一频段和该第二频段上,接收该第一节点发送的该第二确认帧。
可选地,该第一频段对应普通基带调制方式,该第二频段对应基带多载波调制方式,该普通基带调制方式包括OOK调制方式或者MPPM调制方式,该基带多载波调制方式包括ACO-OFDM调制方式或者DCO-OFDM调制方式。
可选地,该获取单元510具体用于:
在建立通信链路过程中,通过与该第一节点、该第三节点进行协商,获取该确认帧传输信息;或者,装置接收DM发送的MAP帧,该MAP帧包括该确认帧传输信息。
应注意,本发明实施例中,图25中的收发单元410可以由收发器实现,图26中的获取单元510可以由收发器或者处理器实现,收发单元520可以由处理器实现。
如图27所示,装置600可以包括处理器610、收发器620和存储器630。其中,存储器630可以用于存储指示信息,还可以用于存储处理器610执行的代码、指令等。
作为示例而非限定,处理器610、收发器620、存储器630之间通过例如,总线等方式实现通信连接。
需要说明的是,处理器610执行的方法与前述方法实施例的内容一致,不再赘述。
应注意,上述方法实施例可以应用于处理器中,或者由处理器实现。处理器可能是一种集成电路芯片,具有信号的处理能力。在实现过程中,上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor,DSP)、专用集成电路(Application Specific Integrated Circuit,ASIC)、现成可编程门阵列(Field Programmable Gate Array,FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、分立硬件组件。可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明实施例公开的方法的步骤可以直接体现为硬件译码处理器执行完成,或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器,处理器读取存储器中的信息,结合其硬件完成上述方法的步骤。
可以理解,本发明实施例中,存储器630可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(Read-Only Memory,ROM)、可编程只读存储器(Programmable ROM,PROM)、可擦除可编程只读存储器(Erasable PROM,EPROM)、电可擦除可编程只读存储器(Electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory,RAM),其用作外部高速缓存。通过示例性但不是限制性说明,许多形式的RAM可用,例如,静态随机存取存储器(Static RAM,SRAM)、动态随机存取存储器(Dynamic RAM,DRAM)、同步动态随机存取存储器(Synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(Synch Link DRAM,SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM,DR RAM)。应注意,本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解,在本发明实施例和所附权利要求书中使用的术语是仅仅出于描述特定实施例的目的,而非旨在限制本发明实施例。
例如,本发明实施例中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系。具体地,A和/或B可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
又例如,在本发明实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式,除非上下文清楚地表示其他含义。
又例如,在本发明实施例中可能采用术语第一、第二、第三等来描述各种消息、请求和终端,但这些消息、请求和终端不应限于这些术语。这些术语仅用来将消息、请求和终端彼此区分开。
又例如,取决于语境,如在此所使用的词语“如果”或“若”可以被解释成为“在……时”或“当……时”或“响应于确定”或“响应于检测”。类似地,取决于语境,短语“如果确定”或“如果检测(陈述的条件或事件)”可以被解释成为“当确定时”或“响应于确定”或“当检测(陈述的条件或事件)时”或“响应于检测(陈述的条件或事件)”。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本发明实施例的范围。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请提供的几个实施例中,应该理解到,所揭露的系统、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本发明实施例的目的。
另外,在本发明实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。
如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本发明实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本发明实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(Read-Only Memory,ROM)、 随机存取存储器(Random Access Memory,RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上内容,仅为本发明实施例的具体实施方式,但本发明实施例的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明实施例揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明实施例的保护范围之内。因此,本发明实施例的保护范围应所述以权利要求的保护范围为准。

Claims (40)

  1. 一种传输数据的方法,其特征在于,所述方法包括:
    第一节点在全双工无竞争的传输机会FDCFTXOP中向第二节点发送第一帧,所述第一帧包括第一指示信息;
    其中,所述第一指示信息用于指示所述第二节点在接收完第二帧之后,向所述第一节点发送所述第一帧对应的第一确认帧;
    所述第一节点发送所述第二帧;
    所述第一节点在发送完所述第二帧之后,接收所述第二节点发送的所述第一确认帧。
  2. 根据权利要求1所述的方法,其特征在于,若所述第一节点在所述第一帧对应的时间区间内,未接收到第三节点发送的第三帧;
    所述第一节点发送所述第二帧,包括:
    所述第一节点在发送所述第一帧之后,向所述第三节点发送所述第二帧,所述第二帧包括第二指示信息,所述第二指示信息用于指示所述第三节点在所述第二帧对应的时间区间之后相邻的时间区间内,禁止向所述第一节点发送下一帧,其中,所述第一确认帧为所述第二节点在所述第二帧对应的时间区间之后相邻的时间区间内发送的;
    或者,
    所述第一节点在发送所述第一帧之后,向所述第二节点发送所述第二帧,所述第二帧为确认请求帧或者确认请求符号,用于请求所述第二节点向所述第一节点发送所述第一确认帧,其中,所述第一确认帧为所述第二节点在所述确认请求帧或者所述确认请求符号对应的时间区间之后相邻的时间区间内发送的。
  3. 根据权利要求1所述的方法,其特征在于,若所述第一节点在所述第一帧对应的时间区间内,能够接收到第三节点发送的第三帧;
    所述第一节点发送所述第二帧,包括:
    若所述第一节点确定所述第一帧的结束时刻在所述第三帧的结束时刻之后,所述第一节点在发送所述第一帧之后,向所述第三节点发送所述第二帧,所述第二帧为所述第三帧对应的第二确认帧,其中,所述第一确认帧为所述第二节点在所述第二帧对应的时间区间之后相邻的时间区间内发送的;
    或者,
    若所述第一节点确定所述第一帧的结束时刻在所述第三帧的结束时刻之前,所述第一节点在接收完所述第三帧之后,向所述第三节点发送所述第二帧,所述第二帧为所述第三帧对应的第二确认帧,其中,所述第一确认帧为所述第二节点在所述第二帧对应的时间区间之后相邻的时间区间内发送的。
  4. 根据权利要求1所述的方法,其特征在于,若所述第一节点在所述第一帧对应的时间区间内,能够接收到第三节点发送的第三帧,并且,所述第一帧的结束时刻在所述第三帧的结束时刻之前;
    所述第一节点在全双工无竞争的传输机会FDCFTXOP中向第二节点发送第一帧后,所述方法还包括:
    所述第一节点根据所述第三帧的时长,判断在所述第三帧的结束时刻之前是否能够开始向所述第二节点发送至少一个第四帧;
    若所述第一节点确定在所述第三帧的结束时刻之前能够开始向所述第二节点发送所 述至少一个第四帧,所述第一节点在发送所述第一帧之后,向所述第二节点发送所述至少一个第四帧。
  5. 根据权利要求4所述的方法,其特征在于,若所述第一节点在所述第三帧的结束时刻之前能够开始向所述第二节点发送所述至少一个第四帧,并且,所述至少一个第四帧中的最后一个第四帧的结束时刻在所述第三帧的结束时刻之后,
    所述第一节点发送所述第二帧,包括:
    所述第一节点向所述第二节点发送所述第二帧,所述第二帧为所述最后一个第四帧,所述最后一个第四帧包括第三指示信息,其中,所述第三指示信息用于指示所述第二节点在所述第二帧对应的时间区间之后相邻的时间区间内,向所述第一节点发送所述第一确认帧,所述第一确认帧为所述第二节点对所述第一帧和所述至少一个第四帧中的部分或者全部进行的确认,所述第三帧对应的第二确认帧为所述第一节点在所述第二帧对应的时间区间之后相邻的时间区间内发送的。
  6. 根据权利要求4所述的方法,其特征在于,若所述第一节点在所述第三帧的结束时刻之前能够开始向所述第二节点发送所述至少一个第四帧,并且,所述至少一个第四帧中的最后一个第四帧的结束时刻在所述第三帧的结束时刻之前,
    所述第一节点发送所述第二帧,包括:
    所述第一节点在接收完所述第三帧之后,向所述第三节点发送所述第二帧,所述第二帧为所述第二确认帧,其中,所述第一确认帧为所述第二节点在所述第二帧对应的时间区间之后相邻的时间区间内发送的;
    或者,
    所述第一节点向所述第二节点发送所述第二帧,所述第二帧为所述最后一个第四帧,所述最后一个第四帧包括第四指示信息,所述第四指示信息用于指示所述第二节点在所述第三帧对应的时间区间之后相邻的时间区间内,向所述第一节点发送所述第一确认帧,所述第一确认帧为所述第二节点对所述第一帧和所述至少一个第四帧中的部分或者全部进行的确认,所述第三帧对应的第二确认帧为所述第一节点在所述第三帧的结束时刻之后相邻的时间区间内发送的。
  7. 根据权利要求4所述的方法,其特征在于,若所述第一节点在所述第三帧的结束时刻之前不能够开始向所述第二节点发送所述至少一个第四帧;
    所述第一节点发送所述第二帧,包括:
    所述第一节点在接收完所述第三帧之后,向所述第三节点发送所述第二帧,所述第二帧为所述第二确认帧,其中,所述第一确认帧为所述第二节点在所述第二确认帧对应的时间区间之后相邻的时间区间内发送的;
    或者,
    所述第一节点在所述第一帧之后,向所述第二节点发送所述第二帧,所述第二帧为确认请求帧或者确认请求符号,用于请求所述第二节点向所述第一节点发送所述第一确认帧,其中,所述第一确认帧为所述第二节点在所述第三帧对应的时间区间之后相邻的时间区间内发送的,其中,所述第二确认帧为所述第一节点在所述第三帧的结束时刻之后相邻的时间区间内发送的。
  8. 一种传输数据的方法,其特征在于,所述方法包括:
    第二节点在全双工无竞争的传输机会FDCFTXOP中接收第一节点发送的第一帧,所 述第一帧包括第一指示信息;
    其中,所述第一指示信息用于指示所述第二节点在接收完第二帧之后,向所述第一节点发送所述第一帧对应的第一确认帧;
    所述第二节点接收所述第二帧;
    所述第二节点在接收完所述第二帧之后,向所述第一节点发送所述第一确认帧。
  9. 根据权利要求8所述的方法,其特征在于,所述第二节点接收所述第二帧,包括:
    所述第二节点接收所述第一节点发送所述第二帧,所述第二帧为确认请求帧或者确认请求符号,用于请求所述第二节点向所述第一节点发送所述第一确认帧,其中,所述第一确认帧为所述第二节点在所述确认请求帧或者确认请求符号对应的时间区间之后相邻的时间区间内发送的,或者,所述第一确认帧为所述第二节点在第三帧对应的时间区间之后相邻的时间区间内发送的,所述第三帧为第三节点向所述第一节点发送的;
    或者,
    所述第二节点接收所述第一节点向所述第三节点发送的所述第二帧,所述第二帧为第二确认帧,所述第一确认帧为所述第二节点在所述第二确认帧对应的时间区间之后相邻的时间区间内发送的。
  10. 根据权利要求8所述的方法,其特征在于,若所述第二节点在接收到所述第二帧之前,能够接收到所述第一节点发送的至少一个第四帧,所述向所述第一节点发送所述第一确认帧,包括:
    所述第二节点根据所述至少一个第四帧中的指示信息或者第二确认帧,向所述第一节点发送所述第一确认帧,其中,所述第二确认帧为所述第一节点向第三节点发送的第三帧对应的确认帧。
  11. 根据权利要求10所述的方法,其特征在于,所述第二节点接收所述第二帧,包括:
    所述第二节点接收所述第一节点发送的所述第二帧,所述第二帧为所述至少一个第四帧中的最后一个第四帧,所述最后一个第四帧包括第三指示信息,其中,所述第三指示信息用于指示所述第二节点在所述第二帧对应的时间区间之后相邻的时间区间内,向所述第一节点发送所述第一确认帧,所述第一确认帧为所述第二节点对所述第一帧和所述至少一个第四帧中的部分或者全部进行的确认;
    或者,
    所述第二节点接收所述第二帧,所述第二帧为所述第二确认帧,所述第一确认帧为所述第二节点对所述第一帧和所述至少一个第四帧中的部分或者全部进行的确认,所述第一确认帧为所述第二节点在所述第二确认帧对应的时间区间之后相邻的时间区间内发送的;
    或者,
    所述第二节点接收所述第一节点发送的所述第二帧,所述第二帧为所述最后一个第四帧,所述最后一个第四帧包括第四指示信息,其中,所述第四指示信息用于指示所述第二节点在所述第三帧的结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧,所述第一确认帧为所述第二节点对所述第一帧和所述至少一个第四帧中的部分或者全部进行的确认。
  12. 一种传输数据的方法,其特征在于,所述方法包括:
    第一节点在全双工无竞争的传输机会FDCFTXOP中接收第三节点发送的第三帧;
    所述第一节点在接收所述第三帧的过程中,向第二节点发送第一帧,所述第一帧包括第一指示信息;
    其中,所述第一指示信息用于所述第二节点根据所述第一指示信息确定出第一时间区间,所述第一时间区间为所述第一节点用于接收所述第一帧对应的第一确认帧的时间区间,所述第一时间区间对应的初始时刻和第二时间区间的初始时刻相同,所述第二时间区间为所述第一节点用于发送第三帧对应的第二确认帧的时间区间;
    所述第一节点根据所述第一指示信息,接收所述第二节点发送的所述第一确认帧。
  13. 根据权利要求12所述的方法,其特征在于,所述第一指示信息包括所述第三帧的时长,以及所述第一帧的初始时刻和所述第三帧的初始时刻之间的差值;
    其中,所述接收所述第二节点发送的所述第一确认帧,包括:
    若所述第一节点根据所述第一指示信息确定所述第一帧的结束时刻在所述第三帧的结束时刻之前,所述第一节点在所述第三帧的结束时刻之后的相邻的时间区间内接收所述第二节点发送的所述第一确认帧;
    或者,
    若所述第一节点根据所述第一指示信息确定所述第一帧的结束时刻在所述第三帧的结束时刻之后,所述第一节点在所述第一帧的结束时刻之后的相邻的时间区间内接收所述第二节点发送的所述第一确认帧。
  14. 根据权利要求12所述的方法,其特征在于,所述第一指示信息包括所述第三帧的时长、所述第一帧的初始时刻和所述第三帧的初始时刻之间的差值,以及第二指示信息,所述第二指示信息用于指示所述第二节点在所述第一帧的结束时刻或者在所述第三帧的结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧,或者,所述第二指示信息用于指示所述第二节点在当前帧的结束时刻之后继续接收所述第一节点发送的下一帧;
    其中,所述接收所述第二节点发送的所述第一确认帧,包括:
    若所述第一节点确定所述第一帧的结束时刻在所述第三帧的结束时刻之后,所述第一节点在所述第一帧的结束时刻之后相邻的时间区间内,接收所述第二节点发送所述第一确认帧;
    或者,
    若所述第一节点确定所述第一帧的结束时刻在所述第三帧的结束时刻之前,所述第一节点在所述第三帧的结束时刻之后相邻的时间区间内,接收所述第二节点发送所述第一确认帧;
    或者,
    若所述第一节点确定所述第一帧的结束时刻在所述第三帧的结束时刻之前,所述接收所述第二节点发送的所述第一确认帧之前,所述方法还包括:
    所述第一节点根据所述第三帧的时长,判断在所述第三帧的结束时刻之前是否能够开始向所述第二节点发送至少一个第四帧;
    若所述第一节点确定在所述第三帧的结束时刻之前能够开始向所述第二节点发送所述至少一个第四帧,所述第一节点在发送所述第一帧之后,向所述第二节点发送所述至少一个第四帧。
  15. 根据权利要求14所述的方法,其特征在于,所述第一帧的结束时刻在所述第三帧的结束时刻之前;
    所述接收所述第二节点发送的所述第一确认帧,包括:
    若所述第一节点在所述第一确认帧之前不能够向所述第二节点发送所述至少一个第四帧,所述第一节点在所述第三帧的结束时刻之后相邻的时间区间内,接收所述第二节点发送的所述第一确认帧,其中,所述第一帧中的所述第二指示信息用于指示所述第二节点在所述第三帧的结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧;
    或者,
    若所述第一节点在所述第三帧之前能够向所述第二节点发送所述至少一个第四帧,所述第一节点在发送完所述最后一个第四帧或者接收完所述第三帧之后相邻的时间区间内,接收所述第二节点发送的所述第一确认帧;其中,所述第一帧中的所述第二指示信息用于指示所述第二节点在接收完当前帧之后继续接收所述第一节点发送的下一帧,所述至少一个第四帧中除最后一个第四帧之外的每个第四帧中包括第三指示信息,所述第三指示信息用于指示所述第二节点在接收完当前帧之后继续接收所述第一节点发送的下一帧,所述最后一个第四帧中包括第四指示信息,所述第四指示信息用于指示所述第二节点在所述接收完最后一个第四帧或者所述第三帧的结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧。
  16. 根据权利要求12至15中任一项所述的方法,其特征在于,所述第二确认帧包括第五指示信息,所述第五指示信息用于指示所述第三节点在接收完所述第二确认帧之后相邻的时间区间内,向所述第一节点发送下一帧。
  17. 一种传输数据的方法,其特征在于,所述方法包括:
    第二节点在全双工无竞争的传输机会FDCFTXOP中接收第一节点发送的第一帧,所述第一帧包括第一指示信息;
    其中,所述第一指示信息用于所述第二节点根据所述第一指示信息确定第一时间区间,所述第一时间区间为所述第一节点用于接收所述第一帧对应的第一确认帧的时间区间,所述第一时间区间对应的初始时刻和第二时间区间的初始时刻相同,所述第二时间区间为所述第一节点用于发送第三帧对应的第二确认帧的时间区间;
    所述第二节点根据所述第一指示信息,向所述第一节点发送所述第一确认帧。
  18. 根据权利要求17所述的方法,其特征在于,所述第一指示信息包括所述第三帧的时长,以及所述第一帧的初始时刻和所述第三帧的初始时刻之间的差值;
    其中,所述向所述第一节点发送所述第一确认帧,包括:
    若所述第二节点根据所述第一指示信息确定所述第一帧的结束时刻在所述第三帧的结束时刻之前,所述第二节点在所述第三帧结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧;
    或者,
    若所述第二节点根据所述第一指示信息确定所述第一帧的结束时刻在所述第三帧的结束时刻之后,所述第二节点在所述第一帧结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧。
  19. 根据权利要求17所述的方法,其特征在于,所述第一指示信息包括所述第三帧 的时长、所述第一帧的初始时刻和所述第三帧的初始时刻之间的差值,以及第二指示信息,其中,所述第二指示信息用于指示所述第二节点在所述第一帧的结束时刻或者所述第三帧的结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧;
    其中,所述向所述第一节点发送所述第一确认帧,包括:
    若所述第二节点根据所述第一指示信息确定所述第一帧的结束时刻在所述第三帧的结束时刻之后,所述第二节点在所述第一帧的结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧;
    或者,
    若所述第二节点根据所述第一指示信息确定所述第一帧的结束时刻在所述第三帧的结束时刻之前,所述第二节点在所述第三帧结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧。
  20. 根据权利要求17所述的方法,其特征在于,所述第一指示信息包括所述第三帧的时长、所述第一帧的初始时刻和所述第三帧的初始时刻之间的差值,以及第二指示信息,所述第二指示信息用于指示所述第二节点在当前帧之后继续接收所述第一节点发送的下一帧;
    所述向所述第一节点发送所述第一确认帧之前,所述方法还包括:
    所述第二节点在接收完所述第一帧之后,接收所述第一节点发送的至少一个第四帧,所述至少一个第四帧中除最后一个第四帧之外的每个第四帧中包括第三指示信息,所述第三指示信息用于指示所述第二节点在接收完当前帧之后继续接收所述第一节点发送的下一帧,所述最后一个第四帧中包括第四指示信息,所述第四指示信息用于指示所述第二节点在所述最后一个第四帧的结束时刻或者所述第三帧结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧;
    其中,所述向所述第一节点发送所述第一确认帧,包括:
    若所述最后一个第四帧的结束时刻在所述第三帧的结束时刻之前,所述第二节点在所述第三帧结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧;
    或者,
    若所述最后一个第四帧的结束时刻在所述第三帧的结束时刻之后,所述第二节点在接收完所述最后一个第四帧之后相邻的时间区间内,向所述第一节点发送所述第一确认帧。
  21. 一种传输数据的装置,其特征在于,所述装置包括收发单元,所述收发单元用于:
    在全双工无竞争的传输机会FDCFTXOP中向第二节点发送第一帧,所述第一帧包括第一指示信息;
    其中,所述第一指示信息用于指示所述第二节点在接收完第二帧之后,向所述装置发送所述第一帧对应的第一确认帧;
    发送所述第二帧;
    在发送完所述第二帧之后,接收所述第二节点发送的所述第一确认帧。
  22. 根据权利要求21所述的装置,其特征在于,若所述装置在所述第一帧对应的时间区间内,未接收到第三节点发送的第三帧;
    所述收发单元具体用于:
    在发送所述第一帧之后,向所述第三节点发送所述第二帧,所述第二帧包括第二指 示信息,所述第二指示信息用于指示所述第三节点在所述第二帧对应的时间区间之后相邻的时间区间内,禁止向所述装置发送下一帧,其中,所述第一确认帧为所述第二节点在所述第二帧对应的时间区间之后相邻的时间区间内发送的;
    或者,
    在发送所述第一帧之后,向所述第二节点发送所述第二帧,所述第二帧为确认请求帧或者确认请求符号,用于请求所述第二节点向所述装置发送所述第一确认帧,其中,所述第一确认帧为所述第二节点在所述确认请求帧或者所述确认请求符号对应的时间区间之后相邻的时间区间内发送的。
  23. 根据权利要求21所述的装置,其特征在于,若所述装置在所述第一帧对应的时间区间内,能够接收到第三节点发送的第三帧;
    所述收发单元具体用于:
    若所述装置确定所述第一帧的结束时刻在所述第三帧的结束时刻之后,所述装置在发送所述第一帧之后,向所述第三节点发送所述第二帧,所述第二帧为所述第三帧对应的第二确认帧,其中,所述第一确认帧为所述第二节点在所述第二帧对应的时间区间之后相邻的时间区间内发送的;
    或者,
    若所述装置确定所述第一帧的结束时刻在所述第三帧的结束时刻之前,所述装置在接收完所述第三帧之后,向所述第三节点发送所述第二帧,所述第二帧为所述第三帧对应的第二确认帧,其中,所述第一确认帧为所述第二节点在所述第二帧对应的时间区间之后相邻的时间区间内发送的。
  24. 根据权利要求21所述的装置,其特征在于,若所述装置在所述第一帧对应的时间区间内,能够接收到第三节点发送的第三帧,并且,所述第一帧的结束时刻在所述第三帧的结束时刻之前;
    所述装置在全双工无竞争的传输机会FDCFTXOP中向第二节点发送第一帧后,所述装置还包括处理单元,所述处理单元用于:
    根据所述第三帧的时长,判断在所述第三帧的结束时刻之前是否能够开始向所述第二节点发送至少一个第四帧;
    若所述装置确定在所述第三帧的结束时刻之前能够开始向所述第二节点发送所述至少一个第四帧,所述装置在发送所述第一帧之后,向所述第二节点发送所述至少一个第四帧。
  25. 根据权利要求24所述的装置,其特征在于,若所述装置在所述第三帧的结束时刻之前能够开始向所述第二节点发送所述至少一个第四帧,并且,所述至少一个第四帧中的最后一个第四帧的结束时刻在所述第三帧的结束时刻之后,
    所述收发单元具体用于:
    向所述第二节点发送所述第二帧,所述第二帧为所述最后一个第四帧,所述最后一个第四帧包括第三指示信息,其中,所述第三指示信息用于指示所述第二节点在所述第二帧对应的时间区间之后相邻的时间区间内,向所述装置发送所述第一确认帧,所述第一确认帧为所述第二节点对所述第一帧和所述至少一个第四帧中的部分或者全部进行的确认,所述第三帧对应的第二确认帧为所述装置在所述第二帧对应的时间区间之后相邻的时间区间内发送的。
  26. 根据权利要求24所述的装置,其特征在于,若所述装置在所述第三帧的结束时刻之前能够开始向所述第二节点发送所述至少一个第四帧,并且,所述至少一个第四帧中的最后一个第四帧的结束时刻在所述第三帧的结束时刻之前,
    所述收发单元具体用于:
    在接收完所述第三帧之后,向所述第三节点发送所述第二帧,所述第二帧为所述第二确认帧,其中,所述第一确认帧为所述第二节点在所述第二帧对应的时间区间之后相邻的时间区间内发送的;
    或者,
    向所述第二节点发送所述第二帧,所述第二帧为所述最后一个第四帧,所述最后一个第四帧包括第四指示信息,所述第四指示信息用于指示所述第二节点在所述第三帧对应的时间区间之后相邻的时间区间内,向所述装置发送所述第一确认帧,所述第一确认帧为所述第二节点对所述第一帧和所述至少一个第四帧中的部分或者全部进行的确认,所述第三帧对应的第二确认帧为所述装置在所述第三帧的结束时刻之后相邻的时间区间内发送的。
  27. 根据权利要求24所述的装置,其特征在于,若所述装置在所述第三帧的结束时刻之前不能够开始向所述第二节点发送所述至少一个第四帧;
    所述收发单元具体用于:
    在接收完所述第三帧之后,向所述第三节点发送所述第二帧,所述第二帧为所述第二确认帧,其中,所述第一确认帧为所述第二节点在所述第二确认帧对应的时间区间之后相邻的时间区间内发送的;
    或者,
    在所述第一帧之后,向所述第二节点发送所述第二帧,所述第二帧为确认请求帧或者确认请求符号,用于请求所述第二节点向所述装置发送所述第一确认帧,其中,所述第一确认帧为所述第二节点在所述第三帧对应的时间区间之后相邻的时间区间内发送的,其中,所述第二确认帧为所述装置在所述第三帧的结束时刻之后相邻的时间区间内发送的。
  28. 一种传输数据的装置,其特征在于,所述装置包括收发单元,所述收发单元用于:
    在全双工无竞争的传输机会FDCFTXOP中接收第一节点发送的第一帧,所述第一帧包括第一指示信息;
    其中,所述第一指示信息用于指示所述装置在接收完第二帧之后,向所述第一节点发送所述第一帧对应的第一确认帧;
    接收所述第二帧;
    在接收完所述第二帧之后,向所述第一节点发送所述第一确认帧。
  29. 根据权利要求28所述的装置,其特征在于,所述收发单元具体用于:
    接收所述第一节点发送所述第二帧,所述第二帧为确认请求帧或者确认请求符号,用于请求所述装置向所述第一节点发送所述第一确认帧,其中,所述第一确认帧为所述装置在所述确认请求帧或者确认请求符号对应的时间区间之后相邻的时间区间内发送的,或者,所述第一确认帧为所述第二节点在第三帧对应的时间区间之后相邻的时间区间内发送的,所述第三帧为第三节点向所述第一节点发送的;
    或者,
    接收所述第一节点向所述第三节点发送的所述第二帧,所述第二帧为第二确认帧,所述第一确认帧为所述装置在所述第二确认帧对应的时间区间之后相邻的时间区间内发送的。
  30. 根据权利要求28所述的装置,其特征在于,若所述装置在接收到所述第二帧之前,能够接收到所述第一节点发送的至少一个第四帧,所述收发单元具体用于:
    根据所述至少一个第四帧中的指示信息或者第二确认帧,向所述第一节点发送所述第一确认帧,其中,所述第二确认帧为所述第一节点向第三节点发送的第三帧对应的确认帧。
  31. 根据权利要求30所述的装置,其特征在于,所述收发单元具体用于:
    接收所述第一节点发送的所述第二帧,所述第二帧为所述至少一个第四帧中的最后一个第四帧,所述最后一个第四帧包括第三指示信息,其中,所述第三指示信息用于指示所述装置在所述第二帧对应的时间区间之后相邻的时间区间内,向所述第一节点发送所述第一确认帧,所述第一确认帧为所述装置对所述第一帧和所述至少一个第四帧中的部分或者全部进行的确认;
    或者,
    接收所述第二帧,所述第二帧为所述第二确认帧,所述第一确认帧为所述装置对所述第一帧和所述至少一个第四帧中的部分或者全部进行的确认,所述第一确认帧为所述装置在所述第二确认帧对应的时间区间之后相邻的时间区间内发送的;
    或者,
    所述装置接收所述第一节点发送的所述第二帧,所述第二帧为所述最后一个第四帧,所述最后一个第四帧包括第四指示信息,其中,所述第四指示信息用于指示所述装置在所述第三帧的结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧,所述第一确认帧为所述装置对所述第一帧和所述至少一个第四帧中的部分或者全部进行的确认。
  32. 一种传输数据的装置,其特征在于,所述装置包括收发单元,所述收发单元用于:
    在全双工无竞争的传输机会FDCFTXOP中接收第三节点发送的第三帧;
    在接收所述第三帧的过程中,向第二节点发送第一帧,所述第一帧包括第一指示信息;
    其中,所述第一指示信息用于所述第二节点根据所述第一指示信息确定出第一时间区间,所述第一时间区间为所述装置用于接收所述第一帧对应的第一确认帧的时间区间,所述第一时间区间对应的初始时刻和第二时间区间的初始时刻相同,所述第二时间区间为所述装置用于发送第三帧对应的第二确认帧的时间区间;
    根据所述第一指示信息,接收所述第二节点发送的所述第一确认帧。
  33. 根据权利要求32所述的装置,其特征在于,所述第一指示信息包括所述第三帧的时长,以及所述第一帧的初始时刻和所述第三帧的初始时刻之间的差值;
    其中,所述收发单元具体用于:
    若所述装置根据所述第一指示信息确定所述第一帧的结束时刻在所述第三帧的结束时刻之前,在所述第三帧的结束时刻之后的相邻的时间区间内接收所述第二节点发送的所述第一确认帧;
    或者,
    若所述装置根据所述第一指示信息确定所述第一帧的结束时刻在所述第三帧的结束时刻之后,在所述第一帧的结束时刻之后的相邻的时间区间内接收所述第二节点发送的所述第一确认帧。
  34. 根据权利要求32所述的装置,其特征在于,所述第一指示信息包括所述第三帧的时长、所述第一帧的初始时刻和所述第三帧的初始时刻之间的差值,以及第二指示信息,所述第二指示信息用于指示所述第二节点在所述第一帧的结束时刻或者在所述第三帧的结束时刻之后相邻的时间区间内,向所述装置发送所述第一确认帧,或者,所述第二指示信息用于指示所述第二节点在当前帧的结束时刻之后继续接收所述装置发送的下一帧;
    其中,所述收发单元具体用于:
    若所述装置确定所述第一帧的结束时刻在所述第三帧的结束时刻之后,所述装置在所述第一帧的结束时刻之后相邻的时间区间内,接收所述第二节点发送所述第一确认帧;
    或者,
    若所述装置确定所述第一帧的结束时刻在所述第三帧的结束时刻之前,所述装置在所述第三帧的结束时刻之后相邻的时间区间内,接收所述第二节点发送所述第一确认帧;
    或者,
    若所述装置确定所述第一帧的结束时刻在所述第三帧的结束时刻之前,所述接收所述第二节点发送的所述第一确认帧之前,所述装置还包括处理单元,所述处理单元用于:
    根据所述第三帧的时长,判断在所述第三帧的结束时刻之前是否能够开始向所述第二节点发送至少一个第四帧;
    若所述装置确定在所述第三帧的结束时刻之前能够开始向所述第二节点发送所述至少一个第四帧,所述装置在发送所述第一帧之后,向所述第二节点发送所述至少一个第四帧。
  35. 根据权利要求34所述的装置,其特征在于,所述第一帧的结束时刻在所述第三帧的结束时刻之前;
    所述收发单元具体用于:
    若所述装置在所述第一确认帧之前不能够向所述第二节点发送所述至少一个第四帧,在所述第三帧的结束时刻之后相邻的时间区间内,接收所述第二节点发送的所述第一确认帧,其中,所述第一帧中的所述第二指示信息用于指示所述第二节点在所述第三帧的结束时刻之后相邻的时间区间内,向所述装置发送所述第一确认帧;
    或者,
    若所述装置在所述第三帧之前能够向所述第二节点发送所述至少一个第四帧,在发送完所述最后一个第四帧或者接收完所述第三帧之后相邻的时间区间内,接收所述第二节点发送的所述第一确认帧;其中,所述第一帧中的所述第二指示信息用于指示所述第二节点在接收完当前帧之后继续接收所述装置发送的下一帧,所述至少一个第四帧中除最后一个第四帧之外的每个第四帧中包括第三指示信息,所述第三指示信息用于指示所述第二节点在接收完当前帧之后继续接收所述装置发送的下一帧,所述最后一个第四帧中包括第四指示信息,所述第四指示信息用于指示所述第二节点在所述接收完最后一个第四帧或者所述第三帧的结束时刻之后相邻的时间区间内,向所述装置发送所述第一确认帧。
  36. 根据权利要求32至35中任一项所述的装置,其特征在于,所述第二确认帧包括第五指示信息,所述第五指示信息用于指示所述第三节点在接收完所述第二确认帧之后相邻的时间区间内,向所述装置发送下一帧。
  37. 一种传输数据的装置,其特征在于,所述装置包括收发单元,所述收发单元用于:
    在全双工无竞争的传输机会FDCFTXOP中接收第一节点发送的第一帧,所述第一帧包括第一指示信息;
    其中,所述第一指示信息用于所述装置根据所述第一指示信息确定第一时间区间,所述第一时间区间为所述第一节点用于接收所述第一帧对应的第一确认帧的时间区间,所述第一时间区间对应的初始时刻和第二时间区间的初始时刻相同,所述第二时间区间为所述第一节点用于发送第三帧对应的第二确认帧的时间区间;
    根据所述第一指示信息,向所述第一节点发送所述第一确认帧。
  38. 根据权利要求37所述的装置,其特征在于,所述第一指示信息包括所述第三帧的时长,以及所述第一帧的初始时刻和所述第三帧的初始时刻之间的差值;
    其中,所述收发单元具体用于:
    若所述装置根据所述第一指示信息确定所述第一帧的结束时刻在所述第三帧的结束时刻之前,在所述第三帧结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧;
    或者,
    若所述装置根据所述第一指示信息确定所述第一帧的结束时刻在所述第三帧的结束时刻之后,在所述第一帧结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧。
  39. 根据权利要求37所述的装置,其特征在于,所述第一指示信息包括所述第三帧的时长、所述第一帧的初始时刻和所述第三帧的初始时刻之间的差值,以及第二指示信息,其中,所述第二指示信息用于指示所述装置在所述第一帧的结束时刻或者所述第三帧的结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧;
    其中,所述收发单元具体用于:
    若所述装置根据所述第一指示信息确定所述第一帧的结束时刻在所述第三帧的结束时刻之后,在所述第一帧的结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧;
    或者,
    若所述装置根据所述第一指示信息确定所述第一帧的结束时刻在所述第三帧的结束时刻之前,在所述第三帧结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧。
  40. 根据权利要求37所述的装置,其特征在于,所述第一指示信息包括所述第三帧的时长、所述第一帧的初始时刻和所述第三帧的初始时刻之间的差值,以及第二指示信息,所述第二指示信息用于指示所述装置在当前帧之后继续接收所述第一节点发送的下一帧;
    所述向所述第一节点发送所述第一确认帧之前,所述收发单元还用于:
    所述装置在接收完所述第一帧之后,接收所述第一节点发送的至少一个第四帧,所述至少一个第四帧中除最后一个第四帧之外的每个第四帧中包括第三指示信息,所述第 三指示信息用于指示所述装置在接收完当前帧之后继续接收所述第一节点发送的下一帧,所述最后一个第四帧中包括第四指示信息,所述第四指示信息用于指示所述装置在所述最后一个第四帧的结束时刻或者所述第三帧结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧;
    若所述最后一个第四帧的结束时刻在所述第三帧的结束时刻之前,在所述第三帧结束时刻之后相邻的时间区间内,向所述第一节点发送所述第一确认帧;
    或者,
    若所述最后一个第四帧的结束时刻在所述第三帧的结束时刻之后,在接收完所述最后一个第四帧之后相邻的时间区间内,向所述第一节点发送所述第一确认帧。
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