WO2021244090A1 - 数据发送方法及装置、数据接收方法及装置 - Google Patents

数据发送方法及装置、数据接收方法及装置 Download PDF

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Publication number
WO2021244090A1
WO2021244090A1 PCT/CN2021/079773 CN2021079773W WO2021244090A1 WO 2021244090 A1 WO2021244090 A1 WO 2021244090A1 CN 2021079773 W CN2021079773 W CN 2021079773W WO 2021244090 A1 WO2021244090 A1 WO 2021244090A1
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Prior art keywords
sta
mld
sending
message
send
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PCT/CN2021/079773
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English (en)
French (fr)
Inventor
卢刘明
袁立权
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中兴通讯股份有限公司
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Priority to JP2022526821A priority Critical patent/JP2023528106A/ja
Priority to US17/766,553 priority patent/US20240057160A1/en
Publication of WO2021244090A1 publication Critical patent/WO2021244090A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0808Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H04W74/0816Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453Resources in frequency domain, e.g. a carrier in FDMA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/54Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/541Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/54Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/15Setup of multiple wireless link connections

Definitions

  • the embodiments of the present invention relate to the field of communications, and in particular to a method and device for sending data, and a method and device for receiving data.
  • FIG. 1 is a schematic diagram of data transmission of multi-link devices provided according to related technologies, as shown in Figure 1.
  • Multi-link device (Multi-link Device, MLD) has multiple affiliated stations (Station, STA), in MLD, for the affiliated stations are all wireless access points (Access Point, AP) MLD is more AP
  • the link device (AP MLD) is a non-AP multi-link device (non-AP MLD) for the MLD where the attached stations are all non-AP (non-AP).
  • the STAs in the non-AP MLD shown in FIG. 1 may be respectively associated with the corresponding APs in the AP MLD, and the link formed by the STA and the associated AP may have its own corresponding communication channel.
  • Synchronous Transmit Receive means that the two links of the same MLD can be sent and received separately at the same time.
  • IDC In Device Coexistence
  • Fig. 2 is a schematic diagram of data transmission of a non-STR constrained multi-link device provided by related technologies. As shown in Fig. 2, the non-STR constrained MLD cannot support simultaneous transmission and reception of two links during data transmission.
  • the Request To Send (RTS) mechanism or the Clear to Send (CTS) mechanism is often used to avoid the occurrence of the STR phenomenon in the non-STR MLD, but the above mechanisms all occupy communication resources. The problem of large and low communication efficiency has led to the inability to effectively avoid the occurrence of the STR phenomenon.
  • the non-STR MLD cannot effectively avoid the occurrence of the STR phenomenon during multi-link operation, and no effective solution has been proposed in the related technologies.
  • the embodiments of the present invention provide a data sending method and device, and a data receiving method and device to at least solve the problem of non-STR MLD in the related art that the occurrence of the STR phenomenon cannot be effectively avoided during multi-link operation.
  • a data sending method which is applied to a first STA, and the first STA is attached to a first MLD, and the method includes:
  • the third STA is attached to the first MLD.
  • a data receiving method which is applied to a second STA, the second STA is attached to a second MLD, and the method includes:
  • a data sending device which is applied to a first STA, the first STA is attached to a first MLD, and the device includes:
  • the first sending module is configured to send an instruction to send a message to the second STA; wherein the instruction to send message is used to instruct the first STA to prepare to send the data unit to the second STA within the first transmission opportunity TXOP acquired in advance.
  • STA; the second STA is attached to the second MLD;
  • the second sending module is configured to perform the following operations according to the third STA receiving a data unit or instructing to send a message within a preset frame interval: sending a data unit to the second STA within the first TXOP, or stopping Sending the data unit to the second STA;
  • the third STA is attached to the first MLD.
  • a data receiving device which is applied to a second STA, the second STA is attached to a second MLD, and the device includes:
  • the first receiving module is configured to receive a sending instruction message sent by a first STA; wherein the sending instruction message is used to instruct the first STA to prepare to send data to the second STA within the first TXOP obtained in advance;
  • the first STA is attached to the first MLD;
  • the second receiving module is configured to receive the data unit sent in the first TXOP by the first STA according to the situation that the third STA receives a data unit or instructs to send a message within a preset frame interval;
  • the third STA is attached to the first MLD.
  • a computer-readable storage medium in which a computer program is stored, wherein the computer program is configured to execute any one of the above methods when running Steps in the embodiment.
  • an electronic device including a memory and a processor, the memory stores a computer program, and the processor is configured to run the computer program to execute any of the above Steps in the method embodiment.
  • Figure 1 is a schematic diagram of data transmission of a multi-link device provided according to related technologies
  • Figure 2 is a schematic diagram of data transmission of a non-STR constrained multi-link device provided by related technologies
  • Fig. 3 is a schematic diagram of a data transmission structure according to an embodiment of the present invention.
  • FIG. 4 is a block diagram of the hardware structure of a mobile terminal for implementing a data sending method according to an embodiment of the present invention
  • FIG. 5 is a flowchart of a data sending method according to an embodiment of the present invention.
  • Fig. 6 is a schematic diagram of a frame structure for instructing to send a message according to an embodiment of the present invention
  • Fig. 7 is a schematic diagram (1) of a data transmission scenario according to an exemplary embodiment of the present invention.
  • Fig. 8 is a schematic diagram (2) of a data transmission scenario according to an exemplary embodiment of the present invention.
  • Fig. 9 is a schematic diagram (3) of a data transmission scenario according to an exemplary embodiment of the present invention.
  • Fig. 10 is a schematic diagram of a data transmission scenario (4) according to an exemplary embodiment of the present invention.
  • Figure 11 is a flowchart of a data receiving method according to an embodiment of the present invention.
  • Fig. 12 is a structural block diagram of a data sending device according to an embodiment of the present invention.
  • Fig. 13 is a structural block diagram of a data receiving device according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of the data transmission architecture according to the embodiment of the present invention.
  • the system architecture of the embodiment of the present invention includes at least one network A device 101, and multiple communication devices 110, 120, and 130.
  • the aforementioned communication device 110, communication device 120, and communication device 130 may all be MLDs.
  • the network device 101 is set to provide network services for the communication device 110, the communication device 120, and the communication device 130, so that any two communication devices among the communication device 110, the communication device 120, and the communication device 130 can perform data transmission; If any one of the communication device 110, the communication device 120, and the communication device 130 for data transmission is a non-STR constrained MLD, the sending side and the receiving side in the data transmission process are sufficient. It constitutes the first MLD and the second MLD in the embodiment of the present invention.
  • FIG. 4 is a hardware structure block diagram of a mobile terminal for implementing a data sending method according to an embodiment of the present invention.
  • the mobile terminal may include one or more (only in FIG.
  • a processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104 configured to store data, wherein the above-mentioned mobile terminal may also include Communication function transmission device 106 and input/output device 108.
  • the structure shown in FIG. 4 is only for illustration, and it does not limit the structure of the above-mentioned mobile terminal.
  • the mobile terminal may also include more or fewer components than shown in FIG. 4, or have a different configuration from that shown in FIG. 4.
  • the memory 104 may be configured to store computer programs, for example, software programs and modules of application software, such as the computer programs corresponding to the data sending method in the embodiment of the present invention.
  • the processor 102 executes the computer programs stored in the memory 104 by running Various functional applications and data processing realize the above-mentioned methods.
  • the memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory.
  • the memory 104 may further include a memory remotely provided with respect to the processor 102, and these remote memories may be connected to the mobile terminal through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.
  • the transmission device 106 is configured to receive or transmit data via a network.
  • the above-mentioned specific examples of the network may include a wireless network provided by a communication provider of a mobile terminal.
  • the transmission device 106 includes a network adapter (Network Interface Controller, NIC), which can be connected to other network devices through a base station so as to communicate with the Internet.
  • the transmission device 106 may be a radio frequency (Radio Frequency, referred to as RF) module, which is configured to communicate with the Internet in a wireless manner.
  • RF Radio Frequency
  • FIG. 5 is a flowchart of the data sending method according to an embodiment of the present invention, as shown in FIG. As shown in 5, the data sending method in this embodiment includes:
  • the first STA sends an instruction to send a message to the second STA; where the instruction to send message is used to instruct the first STA to prepare to send a data unit to the second STA within the first transmission opportunity TXOP obtained in advance; the second STA is attached to the second STA; Two MLD;
  • the first STA performs the following operations according to the situation that the third STA receives the data unit or instructs to send the message within the preset frame interval time: send the data unit to the second STA in the first TXOP, or stop sending the data unit to the second STA.
  • Second STA send the data unit to the second STA in the first TXOP, or stop sending the data unit to the second STA.
  • the third STA is attached to the first MLD.
  • first STA and the third STA in the embodiment of the present invention are both attached to the first MLD, and the first STA indicates the STA that pre-transmits data in the first MLD, and the third STA may be one or more , STAs other than the first STA in the first MLD indicated by the third STA.
  • the second STA and the fourth STA in the embodiment of the present invention are both attached to the second MLD, and the second STA indicates the STAs that pre-transmit data in the second MLD.
  • the fourth STA may be one or more. STAs other than the second STA in the second MLD indicated by the four STAs.
  • first MLD and second MLD is non-STR MLD, that is, the first MLD may be an MLD supporting STR, the second MLD may be non-STR MLD, or the first MLD may be Non-STR MLD, the second MLD is an MLD that supports STR, and the first MLD and the second MLD may also be non-STR MLDs, which is not limited in the embodiment of the present invention.
  • the first STA attached to the first MLD can send an instruction to send a message to the second STA attached to the second MLD to instruct the first STA to prepare to obtain the first transmission opportunity (Transmit) in advance.
  • Opportunity, TXOP to send a data unit to the second STA, so that the first STA can perform according to the third STA attached to the first MLD receiving data units or instructing to send a message within a preset frame interval.
  • the following operations send the data unit to the second STA in the first TXOP, or stop sending the data unit to the second STA.
  • the embodiment of the present invention can solve the problem of non-STR MLD in the related art that cannot effectively avoid the occurrence of the STR phenomenon during multi-link operation, so as to avoid the occurrence of STR during data transmission between the first MLD and the second MLD.
  • the effect of the phenomenon can solve the problem of non-STR MLD in the related art that cannot effectively avoid the occurrence of the STR phenomenon during multi-link operation, so as to avoid the occurrence of STR during data transmission between the first MLD and the second MLD. The effect of the phenomenon.
  • the first STA may compete to obtain the first TXOP in advance for data transmission to the second STA. After obtaining the first TXOP, the first STA can send a message to the second STA by sending instructions before sending the data unit to the second STA to indicate that the first STA and the second STA will perform the data unit in the first TXOP. Transmission, the second MLD attached to the second STA can control the remaining STAs attached to the second MLD according to the content of the above-mentioned instruction to send information. In an optional embodiment, the first STA sends an instruction to send a message to the second MLD.
  • the second STA can transmit the instruction sending message to the management entity of the second MLD, so that the management entity of the second MLD sends a message according to the instruction to instruct the fourth STA to stop sending data units to the first STA within a preset period of time And/or the third STA; where the fourth STA is attached to the second MLD, and the preset time period is used to indicate the time period corresponding to the first TXOP duration.
  • the first STA before sending the data unit to the second STA, can determine whether to send the data unit in the first TXOP based on the fact that the remaining STAs in the first MLD receive the data unit within the preset frame interval or instruct to send the message.
  • the data unit to the second STA or choose to stop sending the data unit to the second STA; in one example, in the case that the remaining STAs in the first MLD have not received the data unit or instructed to send a message within the preset frame interval,
  • the first STA sends data to the second STA in the first TXOP; when the remaining STAs in the first MLD receive data units or instruct to send messages within a preset frame interval, the first STA stops sending data units to the second STA.
  • the above-mentioned first STA performs the following operations according to a situation in which the third STA receives a data unit or instructs to send a message within a preset frame interval: sending the data unit to the second STA within the first TXOP, Or, stopping sending the data unit to the second STA includes:
  • the second MLD is an MLD that supports STR
  • the third STA does not receive a data unit whose destination address is the third STA within the frame interval or instructs to send a message ,
  • the first STA sends data to the second STA within the first TXOP; or,
  • the first MLD is an MLD that supports STR
  • the second MLD is a non-STR MLD
  • the third STA does not receive the data unit sent by the fourth STA or instructs to send a message within the frame interval
  • the first STA is Send data to the second STA within one TXOP; wherein, the fourth STA is attached to the second MLD; or,
  • the first STA sends data to the second STA in the first TXOP:
  • the third STA does not receive a data unit or an instruction to send a message with a destination address of the third STA within the frame interval, and the third STA does not receive a data unit or an instruction to send a message from the fourth STA within the frame interval.
  • the following operations are performed according to a situation in which the third STA receives a data unit or instructs to send a message within a preset frame interval time: send the data unit to the second STA within the first TXOP, or stop sending The data unit to the second STA also includes:
  • the first MLD is a non-STR MLD
  • the third STA receives a data unit with a destination address of the third STA within the frame interval or instructs to send a message
  • the first STA stops sending the data unit to the second STA
  • the third STA returns an acknowledgment ACK frame
  • the first STA resends the instruction to send the message to the second STA;
  • the first STA stops sending the data unit to the second STA, and/ Or, after the third STA returns an acknowledgment ACK frame, the first STA re-sends the sending instruction message to the second STA.
  • the third STA may also receive an MLD other than the second MLD, for example, a data unit sent by an STA in the third MLD or an instruction to send message.
  • the first STA can send a data unit to the second STA in the first TXOP, and no STR is generated.
  • the management entity of the second MLD sends a message according to the instruction to instruct the fourth STA to stop sending data units to the first STA and/or the third STA within a preset period of time, such as in the process of the fourth STA.
  • the management entity of the second MLD instructs the fourth STA to perform the following operations:
  • the instruction sending message can instruct the first STA to prepare to send data to the second STA in the first TXOP, and at the same time control the communication resources occupied by the instruction sending message, the instruction sending message includes at least one of the following:
  • the Media Access Control Address (MAC) address of the first STA the MAC address of the second STA, the frame type indicating the message to be sent, the first TXOP duration, the frame check sequence, and the STR indication information of the first MLD;
  • the STR indication information of the first MLD is used to indicate whether the first MLD is an MLD supporting STR.
  • Figure 6 is a schematic diagram of the frame structure of an instruction to send a message according to an embodiment of the present invention.
  • the instruction to send a message can be composed of Type field, frame control, duration, sending address, receiving address, and frame check sequence.
  • the frame type indicating the message to be sent is carried in Type
  • the duration indicates the duration of the first TXOP
  • the sending address indicates the MAC address of the first STA
  • the receiving address indicates the The MAC address of the second STA.
  • the above-mentioned STR indication information of the first MLD, or other information that needs to be carried can be extended on the frame structure shown in FIG. 6, which will not be repeated in this embodiment of the present invention.
  • the foregoing first TXOP duration includes at least one of the following:
  • the SF-IFS duration is used to indicate the frame interval duration.
  • the first TXOP duration is the duration for the first STA to send an instruction to send a message to the second STA, the short frame interval SF-IFS duration, the duration for the first STA to send a data unit to the second STA, and the The short frame interval SIFS duration after a data unit sent by a STA is the sum of five objects of the sending duration of the acknowledgement ACK packet used to indicate the transmission and reception of the data packet.
  • the aforementioned SF-IFS duration is determined according to the following objects:
  • the above-mentioned SF-IFS duration may be twice the transmission duration between the two STAs indicating that the message is sent at the farthest allowed distance, and the processing duration of the MLD (for example, the second MLD) on the instruction to send the message. The sum is determined.
  • sending an instruction to send a message to the second STA includes:
  • the robustness of the sending process of the instruction to send message can be guaranteed, so as to avoid frame loss during its transmission.
  • FIG. 7 is a schematic diagram (1) of a data transmission scenario according to an exemplary embodiment of the present invention, as shown in FIG. As shown in 7, the data transmission process in the scenario shown in this exemplary embodiment is specifically as follows:
  • STA1 of MLD2 obtains TXOP
  • other STAs in MLD2 that have non-STR constraints with STA1 such as STA2
  • STA2 are not receiving data whose target address is their own or instructing to send short frames or CTS frames
  • they are ready to send data to MLD1
  • the corresponding STA set to STA3
  • it is necessary to send a notice-to-send Short Frame (notice-to-send Short Frame) first that is, the instruction in the embodiment of the present invention to send a message to STA3 to notify MLD1 It will send data to STA3 and instruct STA1 to acquire the TXOP duration.
  • MLD1 After MLD1 receives an instruction from STA1 to send a short frame, if other STAs in MLD1 (such as STA4) no longer send data to MLD2 that has a non-STR constraint on the "STA1-STA3" link (such as STA2) , Instruct STA4 not to send data to STA2 at the next TXOP time.
  • STA4 STA4
  • the specific method may include: STA3 can inform the management entity of MLD1 that "STA1 of the link (LINK) corresponding to STA3 will send data", and the management entity of MLD1 knows If STA1 belongs to non-STR MLD, instruct STA4 to perform related operations; if STA4 is sending data to STA2 of MLD2, after sending the A-MPDU and receiving the BA of STA2, if it is still in the TXOP sent by STA4, Or stop sending data to STA2 until the TXOP sent by STA1 ends, or wait for an idle time longer than the xIFS interval before sending data to STA2 of MLD2.
  • the foregoing xIFS interval is used to indicate the frame interval between the end of the originally received BA confirmation frame and the start of sending the A-MPDU frame, that is, the SIFS duration of the data that STA4 is sending to STA2.
  • STA1 When MLD2 sends the instruction to send the short frame within the SF-IFS time interval, after STA1 does not receive the data sent to itself in other STAs of MLD2 that have non-STR constraints with STA1 (such as STA2), STA1 sends data (A -MPDU) to STA3; if STA1 still sends data to STA3 within the next TXOP connection time, there is no need to send instructions to send short frames; if within the TXOP connection next time STA also sends data to other MLD STAs , You must first send instructions to send short frames to the corresponding target site.
  • Fig. 8 is a schematic diagram (2) of a data transmission scenario according to an exemplary embodiment of the present invention. As shown in Fig. 8, after STA2 sends a BA frame, STA1 sends an instruction to send a short frame again.
  • FIG. 9 is a schematic diagram of a data transmission scenario (3) according to an exemplary embodiment of the present invention, such as As shown in FIG. 9, the data transmission process in the scenario shown in this exemplary embodiment is specifically as follows:
  • STA1 of MLD2 When STA1 of MLD2 obtains TXOP, it is ready to send data to the corresponding STA with non-STR MLD (set as STA3). To avoid STR in MLD1, it is necessary to send an instruction to send a short frame to STA3, informing MLD1 that it will send to STA3 Data and indicates the duration of TXOP acquired by STA1.
  • MLD1 After MLD1 receives an instruction from STA1 to send a short frame, if one or more STAs (such as STA4) that have non-STR constraints on the "STA1-STA3" link in MLD1 are not sending data to other STAs (including MLD2) In STA2), instruct STA4 not to send data at the next TXOP time.
  • STAs such as STA4 that have non-STR constraints on the "STA1-STA3" link in MLD1 are not sending data to other STAs (including MLD2) In STA2)
  • the specific method may include: STA3 can inform the management entity of MLD1 that "STA1 of the link (LINK) corresponding to STA3 will send data", and the management of MLD1
  • the entity instructs STA4 to perform related operations; if STA4 is sending data to other STAs, after sending the A-MPDU and receiving the BA, if it is still in the TXOP sent by STA4, or stop sending data to other STAs until the sending of STA1 TXOP ends, or wait for an idle time longer than the xIFS interval before sending data to other STAs;
  • the above xIFS interval refers to the frame interval between the end of the originally received BA confirmation frame and the start of sending the A-MPDU frame, that is, STA4 is SIFS duration of data sent to other STAs.
  • STA1 When MLD2 finishes sending the instruction to send the short frame within the SF-IFS time interval, after other STAs in MLD2 (such as STA2) have not received the data sent to itself from STA4, STA1 sends data (A-MPDU) to STA3 ; If STA1 still sends data to STA3 within the next TXOP time, there is no need to send instructions to send short frames.
  • STA2 When MLD2 finishes sending the instruction to send the short frame within the SF-IFS time interval, STA2 receives the data sent to itself from STA4 or instructs to send the short frame, STA1 stops sending data (A-MPDU) to STA3 until STA2 The BA frame has been sent.
  • FIG. 10 is a schematic diagram of a data transmission scenario (4) according to an exemplary embodiment of the present invention. As shown in FIG. 10, the data transmission process in the scenario shown in this exemplary embodiment is specifically as follows:
  • MLD1 After MLD1 receives an instruction from STA1 to send a short frame, if one or more STAs (such as STA4) that have non-STR constraints on the "STA1-STA3" link in MLD1 are not sending data to other STAs (including MLD2) In STA2), instruct STA4 not to send data at the next TXOP time.
  • STAs such as STA4 that have non-STR constraints on the "STA1-STA3" link in MLD1 are not sending data to other STAs (including MLD2) In STA2)
  • the specific method may include: STA3 can inform the management entity of MLD1 that "STA1 of the link (LINK) corresponding to STA3 will send data", and the management of MLD1 The entity instructs STA4 to perform related operations; if STA4 is sending data to other STAs, after sending the A-MPDU and receiving the BA, if it is still in the TXOP sent by STA4, or stop sending data to STA2 until the TXOP sent by STA1 ends.
  • STA3 can inform the management entity of MLD1 that "STA1 of the link (LINK) corresponding to STA3 will send data", and the management of MLD1
  • the entity instructs STA4 to perform related operations; if STA4 is sending data to other STAs, after sending the A-MPDU and receiving the BA, if it is still in the TXOP sent by STA4, or stop sending data to STA2 until the TXOP sent by STA1 ends.
  • the above xIFS interval refers to the frame interval between the end of the originally received BA confirmation frame and the start of sending the A-MPDU frame, that is, STA4 is sending to The SIFS duration of the data of other STAs.
  • STA1 When MLD2 sends the instruction to send the short frame within the SF-IFS time interval, after STA1 does not receive the data sent to itself in other STAs of MLD2 that have non-STR constraints with STA1 (such as STA2), STA1 sends data (A -MPDU) to STA3; if STA1 still sends data to STA3 within the next TXOP connection time, there is no need to send instructions to send short frames; if within the TXOP connection next time STA also sends data to other MLD STAs , You must first send instructions to send short frames to the corresponding target site.
  • the method according to the above embodiment can be implemented by means of software plus the necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is Better implementation.
  • the technical solution of the present invention essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to enable a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the method described in each embodiment of the present invention.
  • the embodiment of the present invention also provides a data receiving method, which is applied to a second STA, and the second STA is attached to the second MLD.
  • FIG. 11 is a flowchart of the data receiving method according to the embodiment of the present invention, as shown in FIG. 11, The data receiving method in this embodiment includes:
  • the second STA receives the sending instruction message sent by the first STA; where the sending instruction message is used to instruct the first STA to prepare to send data to the second STA in the first TXOP obtained in advance; the first STA is attached to the first MLD ;
  • the second STA receives the data unit sent by the first STA in the first TXOP according to the condition that the third STA receives a data unit or instructs to send a message within a preset frame interval; wherein, the third STA is attached to the first TXOP. MLD.
  • receiving the data unit sent by the first STA in the first TXOP according to the third STA receiving the data unit within the preset frame interval or instructing the sending of the message includes :
  • the second MLD is an MLD that supports STR
  • the third STA does not receive a data unit whose destination address is the third STA within the frame interval or instructs to send a message , Receive the data unit sent by the first STA in the first TXOP; or,
  • the first MLD is an MLD that supports STR
  • the second MLD is a non-STR MLD
  • the third STA does not receive the data unit sent by the fourth STA or instructs to send a message within the frame interval
  • the first STA receives The data unit sent in the first TXOP; where the fourth STA is attached to the second MLD; or,
  • the data unit sent by the first STA in the first TXOP is received:
  • the third STA does not receive a data unit or an instruction to send a message with a destination address of the third STA within the frame interval, and the third STA does not receive a data unit or an instruction to send a message from the fourth STA within the frame interval.
  • the instruction to send the message includes at least one of the following:
  • the STR indication information of the first MLD is used to indicate whether the first MLD is an MLD that supports two links to send and receive STR at the same time.
  • the first TXOP duration includes at least one of the following:
  • the SF-IFS duration is used to indicate the frame interval duration.
  • the SF-IFS duration is determined according to the following objects:
  • receiving the sending instruction message sent by the first STA includes:
  • receiving the sending instruction message sent by the first STA includes:
  • the fourth STA is attached to the second MLD, and the preset time period is used to indicate the time period corresponding to the first TXOP duration.
  • the management entity of the second MLD sends a message according to the instruction to instruct the fourth STA to stop sending data units to the first STA and/or the third STA within a preset period of time, including:
  • the management entity of the second MLD instructs the fourth STA to perform the following operations:
  • At least one of the first MLD and the second MLD is a non-STR MLD.
  • the method according to the above embodiment can be implemented by means of software plus the necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is Better implementation.
  • the technical solution of the present invention essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to enable a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the method described in each embodiment of the present invention.
  • the embodiment of the present invention also provides a data sending device, which is applied to the first STA, and the first STA is attached to the first MLD.
  • the device is used to implement the above-mentioned embodiments and optional implementation manners, and those that have been explained will not be repeated.
  • the term "module" can implement a combination of software and/or hardware with predetermined functions.
  • the devices described in the following embodiments are preferably implemented by software, implementation by hardware or a combination of software and hardware is also possible and conceived.
  • Fig. 12 is a structural block diagram of a data sending device according to an embodiment of the present invention. As shown in Fig. 12, the data sending device in this embodiment includes:
  • the first sending module 302 is configured to send an instruction to send message to the second STA; wherein the instruction to send message is used to instruct the first STA to prepare to send the data unit to the second STA within the first transmission opportunity TXOP acquired in advance; the second STA Attached to the second MLD;
  • the second sending module 304 is configured to perform the following operations according to the third STA receiving a data unit or instructing to send a message within a preset frame interval: sending a data unit to the second STA within the first TXOP, or stopping sending Data unit to the second STA;
  • the third STA is attached to the first MLD.
  • each of the above-mentioned modules can be implemented by software or hardware.
  • it can be implemented in the following way, but not limited to this: the above-mentioned modules are all located in the same processor; or, the above-mentioned modules are in any combination The forms are located in different processors.
  • the embodiment of the present invention also provides a data receiving device, which is applied to a second STA, and the second STA is attached to the second MLD.
  • the device is used to implement the above-mentioned embodiments and preferred implementations, and those that have been explained will not be repeated.
  • the term "module" can implement a combination of software and/or hardware with predetermined functions.
  • the devices described in the following embodiments are preferably implemented by software, implementation by hardware or a combination of software and hardware is also possible and conceived.
  • FIG. 13 is a structural block diagram of a data receiving device according to an embodiment of the present invention. As shown in FIG. 13, the data receiving device in this embodiment includes:
  • the first receiving module 402 is configured to receive the sending instruction message sent by the first STA; wherein the sending instruction message is used to instruct the first STA to prepare to send data to the second STA within the first TXOP acquired in advance; the first STA is attached to First MLD;
  • the second receiving module 404 is configured to receive the data unit sent by the first STA in the first TXOP according to the situation that the third STA receives a data unit or instructs to send a message within a preset frame interval; wherein, the third STA is attached In the first MLD.
  • each of the above-mentioned modules can be implemented by software or hardware.
  • it can be implemented in the following way, but not limited to this: the above-mentioned modules are all located in the same processor; or, the above-mentioned modules are in any combination The forms are located in different processors.
  • the embodiment of the present invention also provides a computer-readable storage medium in which a computer program is stored, wherein the computer program is configured to execute the steps in any one of the foregoing method embodiments when running.
  • the foregoing computer-readable storage medium may include, but is not limited to: U disk, Read-Only Memory (Read-Only Memory, ROM for short), Random Access Memory (Random Access Memory, RAM for short) , Mobile hard drives, magnetic disks or optical discs and other media that can store computer programs.
  • U disk Read-Only Memory
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • Mobile hard drives magnetic disks or optical discs and other media that can store computer programs.
  • An embodiment of the present invention also provides an electronic device, including a memory and a processor, the memory is stored with a computer program, and the processor is configured to run the computer program to execute the steps in any of the foregoing method embodiments.
  • the aforementioned electronic device may further include a transmission device and an input-output device, wherein the transmission device is connected to the aforementioned processor, and the input-output device is connected to the aforementioned processor.
  • modules or steps of the above-mentioned embodiments of the present invention can be implemented by a general computing device, and they can be concentrated on a single computing device or distributed among multiple computing devices.
  • they can be implemented by the program code executable by the computing device, so that they can be stored in the storage device to be executed by the computing device, and in some cases, they can be executed in a different order than here.
  • the steps shown or described can be implemented by making them into individual integrated circuit modules, or making multiple modules or steps of them into a single integrated circuit module. In this way, the present invention is not limited to any specific combination of hardware and software.

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Abstract

本发明实施例提供了一种数据发送方法及装置、数据接收方法及装置,其中,数据发送方法包括:发送指示发送消息至第二STA;其中,指示发送消息用于指示第一STA准备在预先获取的第一传输机会TXOP内发送数据单元至第二STA;第二STA附属于第二MLD;根据第三STA在预设的帧间距时长内接收数据单元或指示发送消息的情况执行以下操作:在第一TXOP内发送数据单元至第二STA,或者,停止发送数据单元至第二STA;其中,第三STA附属于第一MLD。

Description

数据发送方法及装置、数据接收方法及装置 技术领域
本发明实施例涉及通信领域,具体而言,涉及一种数据发送方法及装置、数据接收方法及装置。
背景技术
下一代无线局域网(Wireless Fidelity,WIFI)标准提出灵活的多链路(Multi-link)操作与通信技术,图1是根据相关技术提供的多链路设备的数据传输示意图,如图1所示,多链路设备(Multi-link Device,MLD)具有多个附属的站点(Station,STA),MLD中,对于所附属的站点都是无线接入点(Access Point,AP)的MLD则为AP多链路设备(AP MLD),对于所附属的站点都是非接入点(non-AP)的MLD则为非AP多链路设备(non-AP MLD)。图1中所示的non-AP MLD中的STA可分别关联于AP MLD中的相应的AP,STA与关联的AP构成的链路(Link)可以有自己对应的通信信道。
在上述WIFI多链路操作中,同时收发(Synchronous Transmit Receive,STR)是指同一MLD的两条链路上可在同一时间分别进行收发,在上述情形下,如果MLD中通信信道之间隔离度不佳,则易于导致MLD设备内部共存干扰(In Device Coexistence,IDC)。为避免上述共存干扰现象的产生,部分MLD则不支持两条链路同时进行收发,对该MLD则可定义为non-STR MLD,即不支持STR的MLD。
对于non-STR MLD,为避免MLD的两条链路上因同时进行数据收发而形成共存干扰进而严重影响设备通信,其在多链路操作时应回避STR现象的发生。图2是根据相关技术提供的non-STR约束的多链路设备的数据传输示意图,如图2所示,non-STR约束的MLD进行数据传输过程中,无法支持两条链路同时收发。相关技术中,目前多通过请求发送(Request To Send,RTS)机制或允许发送(Clear to send,CTS)机制来避免上述non-STR MLD中STR现象的发生,但上述机制均存在占用通信资源过大、通信效率不高的问题,进而导致无法有效的避免STR现象的发生。
针对上述相关技术中,non-STR MLD在多链路操作时无法有效的避免STR现象的发生的问题,相关技术中尚未提出有效的解决方案。
发明内容
本发明实施例提供了一种数据发送方法及装置、数据接收方法及装置,以至少解决相关技术中non-STR MLD在多链路操作时无法有效的避免STR现象的发生的问题。
根据本发明的一个实施例,提供了一种数据发送方法,应用于第一STA,所述第一STA附属于第一MLD,所述方法包括:
发送指示发送消息至第二STA;其中,所述指示发送消息用于指示所述第一STA准备在预先获取的第一传输机会TXOP内发送数据单元至所述第二STA;所述第二STA附属于第二MLD;
根据第三STA在预设的帧间距时长内接收数据单元或指示发送消息的情况执行以下操作: 在所述第一TXOP内发送数据单元至第二STA,或者,停止发送数据单元至第二STA;
其中,所述第三STA附属于所述第一MLD。
根据本发明的另一个实施例,还提供了一种数据接收方法,应用于第二STA,所述第二STA附属于第二MLD,所述方法包括:
接收第一STA发送的指示发送消息;其中,所述指示发送消息用于指示所述第一STA准备在预先获取的第一TXOP内发送数据至所述第二STA;所述第一STA附属于第一MLD;
接收所述第一STA根据第三STA在预设的帧间距时长内接收数据单元或指示发送消息的情况以在所述第一TXOP内发送的数据单元;其中,所述第三STA附属于所述第一MLD。
根据本发明的另一个实施例,还提供了一种数据发送装置,应用于第一STA,所述第一STA附属于第一MLD,所述装置包括:
第一发送模块,设置为发送指示发送消息至第二STA;其中,所述指示发送消息用于指示所述第一STA准备在预先获取的第一传输机会TXOP内发送数据单元至所述第二STA;所述第二STA附属于第二MLD;
第二发送模块,设置为根据第三STA在预设的帧间距时长内接收数据单元或指示发送消息的情况执行以下操作:在所述第一TXOP内发送数据单元至第二STA,或者,停止发送数据单元至第二STA;
其中,所述第三STA附属于所述第一MLD。
根据本发明的另一个实施例,还提供了一种数据接收装置,应用于第二STA,所述第二STA附属于第二MLD,所述装置包括:
第一接收模块,设置为接收第一STA发送的指示发送消息;其中,所述指示发送消息用于指示所述第一STA准备在预先获取的第一TXOP内发送数据至所述第二STA;所述第一STA附属于第一MLD;
第二接收模块,设置为接收所述第一STA根据第三STA在预设的帧间距时长内接收数据单元或指示发送消息的情况以在所述第一TXOP内发送的数据单元;其中,所述第三STA附属于所述第一MLD。
根据本发明的另一个实施例,还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中存储有计算机程序,其中,所述计算机程序被设置为运行时执行上述任一项方法实施例中的步骤。
根据本发明的另一个实施例,还提供了一种电子装置,包括存储器和处理器,所述存储器中存储有计算机程序,所述处理器被设置为运行所述计算机程序以执行上述任一项方法实施例中的步骤。
附图说明
图1是根据相关技术提供的多链路设备的数据传输示意图;
图2是根据相关技术提供的non-STR约束的多链路设备的数据传输示意图;
图3是根据本发明实施例提供的数据传输的构架示意图;
图4是本发明实施例的用于实施数据发送方法的移动终端的硬件结构框图;
图5是根据本发明实施例提供的数据发送方法的流程图;
图6是根据本发明实施例提供的指示发送消息的帧结构示意图;
图7是根据本发明示例性实施例提供的数据传输的场景示意图(一);
图8是根据本发明示例性实施例提供的数据传输的场景示意图(二);
图9是根据本发明示例性实施例提供的数据传输的场景示意图(三);
图10是根据本发明示例性实施例提供的数据传输的场景示意图(四);
图11是根据本发明实施例提供的数据接收方法的流程图;
图12是根据本发明实施例提供的数据发送装置的结构框图;
图13是根据本发明实施例提供的数据接收装置的结构框图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本发明的实施例。
需要说明的是,本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。
为进一步说明本发明实施例中的数据发送方法及装置、数据接收方法及装置的工作方式,以下对于本发明实施例中的数据发送方法及装置、数据接收方法及装置的应用场景进行阐述:
本发明实施例可以应用于多个MLD之间进行数据传输,图3是根据本发明实施例提供的数据传输的构架示意图,如图3所示,本发明实施例的系统构架中至少包括一个网络设备101,以及多个通信设备110、通信设备120、通信设备130。上述通信设备110、通信设备120、通信设备130均可以为MLD。网络设备101设置为为通信设备110、通信设备120、通信设备130提供网络服务,以令通信设备110、通信设备120、通信设备130中的任意两个通信设备之间可进行数据传输;在上述通信设备110、通信设备120、通信设备130中的任意两个进行数据传输的通信设备中的任意一个为non-STR约束的MLD的情形下,该数据传输过程中的发送侧与接收侧即可构成本发明实施例中的第一MLD与第二MLD。
本发明实施例中所提供的数据发送方法的实施例可以在MLD中的任意STA,如移动终端、计算机终端或者类似的运算装置中执行。以运行在移动终端上为例,图4是本发明实施例的用于实施数据发送方法的移动终端的硬件结构框图,如图4所示,移动终端可以包括一个或多个(图1中仅示出一个)处理器102(处理器102可以包括但不限于微处理器MCU或可编程逻辑器件FPGA等的处理装置)和设置为存储数据的存储器104,其中,上述移动终端还可以包括设置为通信功能的传输设备106以及输入输出设备108。本领域技术人员可以理解的是,图4所示的结构仅为示意,其并不对上述移动终端的结构造成限定。例如,移动终端还可包括比图4中所示更多或者更少的组件,或者具有与图4所示不同的配置。
存储器104可设置为存储计算机程序,例如,应用软件的软件程序以及模块,如本发明实施例中的数据发送方法对应的计算机程序,处理器102通过运行存储在存储器104内的计算机程序,从而执行各种功能应用以及数据处理,即实现上述的方法。存储器104可包括高速随机存储器,还可包括非易失性存储器,如一个或者多个磁性存储装置、闪存、或者其他非易失性固态存储器。在一些实例中,存储器104可进一步包括相对于处理器102远程设置的存储器,这些远程存储器可以通过网络连接至移动终端。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
传输装置106设置为经由一个网络接收或者发送数据。上述的网络具体实例可包括移动终端的通信供应商提供的无线网络。在一个实例中,传输装置106包括一个网络适配器(Network Interface Controller,NIC),其可通过基站与其他网络设备相连从而可与互联网进 行通讯。在一个实例中,传输装置106可以为射频(Radio Frequency,简称为RF)模块,其设置为通过无线方式与互联网进行通讯。
以下对于本发明实施例中的数据发送方法及装置、数据接收方法及装置的工作方式进行阐述:
根据本发明的一实施例,提供了一种数据发送方法,应用于第一STA,第一STA附属于第一MLD,图5是根据本发明实施例提供的数据发送方法的流程图,如图5所示,本实施例中的数据发送方法包括:
S102,第一STA发送指示发送消息至第二STA;其中,指示发送消息用于指示第一STA准备在预先获取的第一传输机会TXOP内发送数据单元至第二STA;第二STA附属于第二MLD;
S104,第一STA根据第三STA在预设的帧间距时长内接收数据单元或指示发送消息的情况执行以下操作:在第一TXOP内发送数据单元至第二STA,或者,停止发送数据单元至第二STA;
其中,第三STA附属于第一MLD。
需要说明的是,本发明实施例中的第一STA与第三STA同附属于第一MLD,第一STA所指示第一MLD中预进行数据传输的STA,第三STA可以为一个或多个,第三STA所指示第一MLD中第一STA以外的STA。类似的,本发明实施例中的第二STA与第四STA同附属于第二MLD,第二STA所指示第二MLD中预进行数据传输的STA,第四STA可以为一个或多个,第四STA所指示第二MLD中第二STA以外的STA。
需要说明的是,上述第一MLD与第二MLD中的至少一个为non-STR MLD,即,可以第一MLD为支持STR的MLD,第二MLD为non-STR MLD,也可以第一MLD为non-STR MLD,第二MLD为支持STR的MLD,也可以第一MLD与第二MLD同为non-STR MLD,本发明实施例对此不作限定。
通过本发明实施例,由于附属于第一MLD的第一STA可发送指示发送消息至附属于第二MLD的第二STA,以指示所述第一STA准备在预先获取的第一传输机会(Transmit Opportunity,TXOP)内发送数据单元至所述第二STA,进而令第一STA可根据同附属于第一MLD的第三STA在预设的帧间距时长内接收数据单元或指示发送消息的情况执行以下操作:在第一TXOP内发送数据单元至第二STA,或者,停止发送数据单元至第二STA。因此,本发明实施例可以解决相关技术中non-STR MLD在多链路操作时无法有效的避免STR现象的发生的问题,以达到避免第一MLD与第二MLD之间进行数据传输时出现STR现象的效果。
本发明实施例中,第一STA可预先竞争获得第一TXOP,以用于向第二STA进行数据传输。获得第一TXOP后,第一STA可在发送数据单元至第二STA之前,通过发送指示发送消息至第二STA,以指示第一STA与第二STA将在第一TXOP内将进行数据单元的传输,第二STA所附属的第二MLD即可根据上述指示发送信息的内容,对第二MLD其余附属的STA进行控制,在一可选实施例中,第一STA发送指示发送消息至第二STA后,可由第二STA将该指示发送消息传输至第二MLD的管理实体,以供第二MLD的管理实体根据指示发送消息指示第四STA在预设时段内停止发送数据单元至第一STA和/或第三STA;其中,第四STA附属于第二MLD,预设时段用于指示第一TXOP时长对应的时段。
以此,第一STA在发送数据单元至第二STA之前,即可根据第一MLD中其余STA在预设的帧间距时长内接收数据单元或指示发送消息的情况判断是否在第一TXOP内发送数据单元至第二STA,或选择停止发送数据单元至第二STA;在一示例中,在第一MLD中其余STA在预设的帧间距时长内未接收数据单元或指示发送消息的情况下,第一STA在第一TXOP内发送数据至第二STA;在第一MLD中其余STA在预设的帧间距时长内接收数据单元或指示发送消息的情况下,第一STA停止发送数据单元至第二STA。以此,即可在第一STA于第一TXOP内发送数据至第二STA的过程中,确保第一MLD与第二MLD之间的其它链路没有数据传输,以避免第一MLD与第二MLD之间STR的产生。
在一可选实施例中,上述第一STA根据第三STA在预设的帧间距时长内接收数据单元或指示发送消息的情况执行以下操作:在第一TXOP内发送数据单元至第二STA,或者,停止发送数据单元至第二STA,包括:
在第一MLD为不支持同时收发non-STR MLD,第二MLD为支持STR的MLD,且第三STA在帧间距时长内未接收目标地址为第三STA的数据单元或指示发送消息的情况下,第一STA在第一TXOP内发送数据至第二STA;或者,
在第一MLD为支持STR的MLD,第二MLD为non-STR MLD,且第三STA在帧间距时长内未接收第四STA发送的数据单元或指示发送消息的情况下,第一STA在第一TXOP内发送数据至第二STA;其中,第四STA附属于第二MLD;或者,
在第一MLD为不支持同时收发non-STR MLD,第二MLD为non-STR MLD,且满足以下条件的情况下,第一STA在第一TXOP内发送数据至第二STA:
第三STA在帧间距时长内未接收目标地址为第三STA的数据单元或指示发送消息,第三STA在帧间距时长内未接收第四STA发送的数据单元或指示发送消息。
在一可选实施例中,根据第三STA在预设的帧间距时长内接收数据单元或指示发送消息的情况执行以下操作:在第一TXOP内发送数据单元至第二STA,或者,停止发送数据单元至第二STA,还包括:
在第一MLD为non-STR MLD,且第三STA在帧间距时长内接收到目标地址为第三STA的数据单元或指示发送消息的情况下,第一STA停止发送数据单元至第二STA,和/或,在第三STA返回确认ACK帧后,第一STA重新发送指示发送消息至第二STA;或者,
在第二MLD为non-STR MLD,且第三STA在帧间距时长内接收到第四STA发送的数据单元或指示发送消息的情况下,第一STA停止发送数据单元至第二STA,和/或,在第三STA返回确认ACK帧后,第一STA重新发送指示发送消息至第二STA。
需要说明的是,上述预设的帧间距时长内,第三STA还可能接收到来自第二MLD以外的MLD,例如,第三MLD中的STA所发送的数据单元或指示发送消息,上述情况下,第一STA可在第一TXOP内向第二STA发送数据单元,亦不会产生STR。
在一可选实施例中,第二MLD的管理实体根据指示发送消息指示第四STA在预设时段内停止发送数据单元至第一STA和/或第三STA的过程中,如在第四STA正在第二TXOP内发送数据单元至第一STA和/或第三STA的情形下,则第二MLD的管理实体指示第四STA执行以下操作:
发送当前数据单元至第一STA和/或第三STA,并接收第一STA和/或第三STA根据数据单元返回的BA帧;
在第二TXOP未结束的情形下,停止发送数据至第一STA和/或第三STA直至第一TXOP结束;或者,在预设的空闲时长内停止发送数据至第一STA和/或第三STA;其中,空闲时长大于或等于第四STA正在发送的数据中的SIFS时长。
为令指示发送消息可指示第一STA准备在第一TXOP内发送数据至第二STA,同时控制指示发送消息所占用的通信资源,指示发送消息包括以下至少之一:
第一STA的媒体介入控制层(Media Access Control Address,MAC)地址、第二STA的MAC地址、指示发送消息的帧类型、第一TXOP时长、帧校验序列、第一MLD的STR指示信息;
其中,第一MLD的STR指示信息用于指示第一MLD是否为支持STR的MLD。
图6是根据本发明实施例提供的指示发送消息的帧结构示意图,如图6所示,指示发送消息可以由Type字段、帧控制、时长、发送地址、接收地址、帧校验序列构成,需要说明的是,图6所示的指示发送消息的帧结构中,指示发送消息的帧类型携带在Type中,时长指示第一TXOP时长,发送地址即指示第一STA的MAC地址,接收地址即指示第二STA的MAC地址。上述第一MLD的STR指示信息,或其它需携带的信息可在图6所示的帧结构上进行扩展,本发明实施例在此不再赘述。
在一可选实施例中,上述第一TXOP时长包括以下至少之一:
第一STA发送指示发送消息至第二STA的时长;短帧帧间距SF-IFS时长;第一STA发送数据单元至第二STA的时长;第一STA发送的数据单元后的短帧间距SIFS时长;用于指示数据包收发情况的确认ACK包的发送时长;
其中,SF-IFS时长用于指示帧间距时长。
在一示例中,上述第一TXOP时长即为上述第一STA发送指示发送消息至第二STA的时长,短帧帧间距SF-IFS时长,第一STA发送数据单元至第二STA的时长,第一STA发送的数据单元后的短帧间距SIFS时长,用于指示数据包收发情况的确认ACK包的发送时长五个对象之和。
在一可选实施例中,上述SF-IFS时长根据以下对象确定:
指示发送消息在所允许的最远间距的两个STA之间的发送时长,MLD对指示发送消息的处理时长。
在一示例中,上述SF-IFS时长可由指示发送消息在所允许的最远间距的两个STA之间的发送时长的两倍,以及MLD(例如,第二MLD)对指示发送消息的处理时长之和进行确定。
在一可选实施例中,发送指示发送消息至第二STA,包括:
通过调制阶数小于或等于预设的调制阶数阈值的调制编码方案MCS发送指示发送消息至第二STA;和/或,
通过抗干扰性高于或等于预设的抗干扰阈值,和/或信噪比SNR大于或等于预设的SNR阈值的子载波段发送指示发送消息至第二STA。
根据上述可选实施例中记载的技术方案,可保证指示发送消息在发送过程的健壮性,以避免其传输中产生丢帧。
以下通过多个示例性实施例以进一步说明本发明实施例中的数据发送方法:
示例性实施例1
本示例性实施例中,发送侧的MLD2为non-STR MLD,接收侧的MLD1为支持STR的MLD1;图7是根据本发明示例性实施例提供的数据传输的场景示意图(一),如图7所示,本示例性实施例中所示的场景下数据传输的过程具体如下:
MLD2的STA1在获得TXOP时,当MLD2中其他与STA1存在non-STR约束的STA(如STA2)都不在接收目标地址是自身的数据或指示发送短帧或CTS帧时,准备发送数据给MLD1中的对应STA(设为STA3),为避免在MLD2发生同时收发STR,需先发送指示发送短帧(notice-to-send Short Frame),即本发明实施例中的指示发送消息给STA3,通知MLD1将要给STA3发送数据并且指示STA1获取的发送TXOP的时长。
MLD1在STA3收到STA1发来的指示发送短帧后,如果MLD1中其他STA(如STA4)不再发送数据给MLD2中与“STA1-STA3”链路存在non-STR约束的STA(如STA2),则指示STA4在接下来的TXOP时刻不要发送数据给STA2,具体方法可包括,STA3可通过告知MLD1的管理实体“STA3所对应链路(LINK)的STA1将发送数据”,MLD1的管理实体获知STA1是属于non-STR MLD的,则指示STA4进行相关操作;如果STA4正在发送数据给MLD2的STA2,则在发送完A-MPDU并收到STA2的BA后,如还在STA4的发送TXOP内,或者停止发送数据给STA2直到STA1的发送TXOP结束,或者等待比xIFS间隔更长的空闲时间才能再发送数据给MLD2的STA2。上述xIFS间隔用于指示原本收到的BA确认帧末端与开始发送A-MPDU帧之间的帧间隔,即STA4正在发送给STA2的数据的SIFS时长。
当MLD2在发送完指示发送短帧后的SF-IFS时间间隔内,STA1在MLD2的其他与STA1存在non-STR约束的STA(如STA2)未接收发送给自身的数据后,STA1发送数据(A-MPDU)给STA3;如果在TXOP内接下里的时间内STA1还发送数据给STA3则不用再发指示发送短帧;如果在TXOP内接下里的时间内STA还发送数据给其他MLD的STA,则还要先发送指示发送短帧给对应的目标站点。
当MLD2在发送完指示发送短帧后的在SF-IFS时间间隔内,STA1在MLD2的其他与STA1存在non-STR约束的STA(如STA2)在接收目标地址是自身的数据或指示发送短帧或CTS帧,STA1停止发送数据(A-MPDU)给STA3,直到STA2发送完成BA帧。图8是根据本发明示例性实施例提供的数据传输的场景示意图(二),如图8所示,STA2发送完成BA帧之后,STA1再发送指示发送短帧。
示例性实施例2
本示例性实施例中,发送侧的MLD为支持STR的MLD2,接收侧的MLD为具有non-STR MLD;图9是根据本发明示例性实施例提供的数据传输的场景示意图(三),如图9所示,本示例性实施例中所示的场景下数据传输的过程具体如下:
MLD2的STA1在获得TXOP时,准备发送数据给具有non-STR MLD中的对应STA(设为STA3),为避免在MLD1发生STR,需先发送指示发送短帧给STA3,通知MLD1将要给STA3发送数据并且指示STA1获取的发送TXOP的时长。
MLD1在STA3收到STA1发来的指示发送短帧后,如果MLD1中与”STA1-STA3”链路存在non-STR约束的一个或多个STA(如STA4)不在发送数据给其他STA(包括MLD2中的STA2),则指示STA4在接下来的TXOP时刻不要发送数据,具体方法可包括:STA3可通过告知MLD1的管理实体“STA3所对应链路(LINK)的STA1将发送数据”,MLD1的管理实体则指示STA4进行相关操作;如果STA4正在发送数据给其他STA,则在发送完 A-MPDU并收到BA后,如还在STA4的发送TXOP内,或者停止发送数据给其他STA直到STA1的发送TXOP结束,或者等待比xIFS间隔更长的空闲时间才能再发送数据给其他STA;上述xIFS间隔是指原本收到的BA确认帧末端与开始发送A-MPDU帧之间的帧间隔,即STA4正在发送给其它STA的数据的SIFS时长。
当MLD2在发送完指示发送短帧后的SF-IFS时间间隔内,MLD2中的其他STA(如STA2)未接收到来自STA4且发送给自身的数据后,STA1发送数据(A-MPDU)给STA3;如果在TXOP内接下里的时间内STA1还发送数据给STA3则不用再发指示发送短帧。
当MLD2在发送完指示发送短帧后的在SF-IFS时间间隔内,STA2接收到来自STA4且发送给自身的数据或指示发送短帧,STA1停止发送数据(A-MPDU)给STA3,直到STA2发送完成BA帧。
示例性实施例3
本示例性实施例中,发送侧的MLD为具有non-STR MLD,接收侧的MLD为具有non-STR MLD;图10是根据本发明示例性实施例提供的数据传输的场景示意图(四),如图10所示,本示例性实施例中所示的场景下数据传输的过程具体如下:
non-STR MLD的STA(设为STA1)在获得TXOP时,当MLD2中其他与STA1存在non-STR约束的STA都不在接收数据时,准备发送数据给MLD1中的对应STA(设为STA3),为避免在MLD2发生STR,需先发送指示发送短帧给STA3,通知MLD1将要给STA3发送数据并且指示STA1获取的发送TXOP的时长。
MLD1在STA3收到STA1发来的指示发送短帧后,如果MLD1中与“STA1-STA3”链路存在non-STR约束的一个或多个STA(如STA4)不在发送数据给其他STA(包括MLD2中的STA2),则指示STA4在接下来的TXOP时刻不要发送数据,具体方法可包括:STA3可通过告知MLD1的管理实体“STA3所对应链路(LINK)的STA1将发送数据”,MLD1的管理实体指示STA4进行相关操作;如果STA4正在发送数据给其他STA,则在发送完A-MPDU并收到BA后,如还在STA4的发送TXOP内,或者停止发送数据给STA2直到STA1的发送TXOP结束,或者等待比xIFS间隔更长的空闲时间才能再发送数据给其他STA;上述xIFS间隔是指原本收到的BA确认帧末端与开始发送A-MPDU帧之间的帧间隔,即STA4正在发送给其它STA的数据的SIFS时长。
当MLD2在发送完指示发送短帧后的SF-IFS时间间隔内,STA1在MLD2的其他与STA1存在non-STR约束的STA(如STA2)未接收发送给自身的数据后,STA1发送数据(A-MPDU)给STA3;如果在TXOP内接下里的时间内STA1还发送数据给STA3则不用再发指示发送短帧;如果在TXOP内接下里的时间内STA还发送数据给其他MLD的STA,则还要先发送指示发送短帧给对应的目标站点。
当MLD2在发送完“指示发送短帧”后的在SF-IFS时间间隔内,STA1在MLD2的其他与STA1存在non-STR约束的STA(如STA2)在接收发送给自身的数据或指示发送短帧,STA1停止发送数据(A-MPDU)给STA3,直到STA2发送完成BA帧。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现,当然也可以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解,本发明的技术方案本质上或者说对现有技术做出贡献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(如 ROM/RAM、磁碟、光盘)中,包括若干指令用以使得一台终端设备(可以是手机,计算机,服务器,或者网络设备等)执行本发明各个实施例所述的方法。
本发明实施例还提供一种数据接收方法,应用于第二STA,第二STA附属于第二MLD,图11是根据本发明实施例提供的数据接收方法的流程图,如图11所示,本实施例中的数据接收方法包括:
S202,第二STA接收第一STA发送的指示发送消息;其中,指示发送消息用于指示第一STA准备在预先获取的第一TXOP内发送数据至第二STA;第一STA附属于第一MLD;
S204,第二STA接收第一STA根据第三STA在预设的帧间距时长内接收数据单元或指示发送消息的情况以在第一TXOP内发送的数据单元;其中,第三STA附属于第一MLD。
在一可选实施例中,上述步骤S204中,接收第一STA根据第三STA在预设的帧间距时长内接收数据单元或指示发送消息的情况以在第一TXOP内发送的数据单元,包括:
在第一MLD为不支持同时收发non-STR MLD,第二MLD为支持STR的MLD,且第三STA在帧间距时长内未接收目标地址为第三STA的数据单元或指示发送消息的情况下,接收第一STA在第一TXOP内发送的数据单元;或者,
在第一MLD为支持STR的MLD,第二MLD为non-STR MLD,且第三STA在帧间距时长内未接收第四STA发送的数据单元或指示发送消息的情况下,接收第一STA在第一TXOP内发送的数据单元;其中,第四STA附属于第二MLD;或者,
在第一MLD为不支持同时收发non-STR MLD,第二MLD为non-STR MLD,且满足以下条件的情况下,接收第一STA在第一TXOP内发送的数据单元:
第三STA在帧间距时长内未接收目标地址为第三STA的数据单元或指示发送消息,第三STA在帧间距时长内未接收第四STA发送的数据单元或指示发送消息。
在一可选实施例中,指示发送消息包括以下至少之一:
第一STA的媒体介入控制层MAC地址、第二STA的MAC地址、指示发送消息的帧类型、第一TXOP时长、帧校验序列、第一MLD的STR指示信息;
其中,第一MLD的STR指示信息用于指示第一MLD是否为支持两条链路同时收发STR的MLD。
在一可选实施例中,第一TXOP时长包括以下至少之一:
第一STA发送指示发送消息至第二STA的时长;短帧帧间距SF-IFS时长;第一STA发送数据单元至第二STA的时长;第一STA发送的数据单元后的短帧间距SIFS时长;用于指示数据包收发情况的确认ACK包的发送时长;
其中,SF-IFS时长用于指示帧间距时长。
在一可选实施例中,SF-IFS时长根据以下对象确定:
指示发送消息在所允许的最远间距的两个STA之间的发送时长,MLD对指示发送消息的处理时长。
在一可选实施例中,接收第一STA发送的指示发送消息,包括:
通过调制阶数小于或等于预设的调制阶数阈值的调制编码方案MCS接收第一STA发送的指示发送消息;和/或,
通过抗干扰性高于或等于预设的抗干扰阈值,和/或信噪比SNR大于或等于预设的SNR阈值的子载波段接收第一STA发送的指示发送消息。
在一可选实施例中,上述步骤S202中,接收第一STA发送的指示发送消息,包括:
接收第一STA发送的指示发送消息,以供第二MLD的管理实体根据指示发送消息指示第四STA在预设时段内停止发送数据单元至第一STA和/或第三STA;
其中,第四STA附属于第二MLD,预设时段用于指示第一TXOP时长对应的时段。
在一可选实施例中,上述步骤S202中,第二MLD的管理实体根据指示发送消息指示第四STA在预设时段内停止发送数据单元至第一STA和/或第三STA,包括:
在第四STA正在第二TXOP内发送数据单元至第一STA和/或第三STA的情形下,第二MLD的管理实体指示第四STA执行以下操作:
发送当前数据单元至第一STA和/或第三STA,并接收第一STA和/或第三STA根据数据单元返回的确认BA帧;
在第二TXOP未结束的情形下,停止发送数据至第一STA和/或第三STA直至第一TXOP结束;或者,在预设的空闲时长内停止发送数据至第一STA和/或第三STA;其中,空闲时长大于或等于第四STA正在发送的数据中的SIFS时长。
在一可选实施例中,第一MLD与第二MLD中的至少一个为non-STR MLD。
需要说明的是,本发明实施例中的数据接收方法的可选实施例与技术效果均与前述数据发送方法对应,故在此不再赘述。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现,当然也可以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解,本发明的技术方案本质上或者说对现有技术做出贡献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(如ROM/RAM、磁碟、光盘)中,包括若干指令用以使得一台终端设备(可以是手机,计算机,服务器,或者网络设备等)执行本发明各个实施例所述的方法。
本发明实施例还提供一种数据发送装置,应用于第一STA,第一STA附属于第一MLD,该装置用于实现上述实施例及可选实施方式,已经进行过说明的不再赘述。如以下所使用的,术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现,但是硬件,或者软件和硬件的组合的实现也是可能并被构想的。
图12是根据本发明实施例提供的数据发送装置的结构框图,如图12所示,本实施例中的数据发送装置包括:
第一发送模块302,设置为发送指示发送消息至第二STA;其中,指示发送消息用于指示第一STA准备在预先获取的第一传输机会TXOP内发送数据单元至第二STA;第二STA附属于第二MLD;
第二发送模块304,设置为根据第三STA在预设的帧间距时长内接收数据单元或指示发送消息的情况执行以下操作:在第一TXOP内发送数据单元至第二STA,或者,停止发送数据单元至第二STA;
其中,第三STA附属于第一MLD。
需要说明的是,本发明实施例中的数据发送装置的可选实施例与技术效果均与前述数据发送方法对应,故在此不再赘述。
需要说明的是,上述各个模块是可以通过软件或硬件来实现的,对于后者,可以通过以下方式实现,但不限于此:上述模块均位于同一处理器中;或者,上述各个模块以任意组合 的形式分别位于不同的处理器中。
本发明实施例还提供一种数据接收装置,应用于第二STA,第二STA附属于第二MLD,该装置用于实现上述实施例及优选实施方式,已经进行过说明的不再赘述。如以下所使用的,术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现,但是硬件,或者软件和硬件的组合的实现也是可能并被构想的。
图13是根据本发明实施例提供的数据接收装置的结构框图,如图13所示,本实施例中的数据接收装置包括:
第一接收模块402,设置为接收第一STA发送的指示发送消息;其中,指示发送消息用于指示第一STA准备在预先获取的第一TXOP内发送数据至第二STA;第一STA附属于第一MLD;
第二接收模块404,设置为接收第一STA根据第三STA在预设的帧间距时长内接收数据单元或指示发送消息的情况以在第一TXOP内发送的数据单元;其中,第三STA附属于第一MLD。
需要说明的是,本发明实施例中的数据接收装置的可选实施例与技术效果均与前述数据发送方法对应,故在此不再赘述。
需要说明的是,上述各个模块是可以通过软件或硬件来实现的,对于后者,可以通过以下方式实现,但不限于此:上述模块均位于同一处理器中;或者,上述各个模块以任意组合的形式分别位于不同的处理器中。
本发明的实施例还提供了一种计算机可读存储介质,该计算机可读存储介质中存储有计算机程序,其中,该计算机程序被设置为运行时执行上述任一项方法实施例中的步骤。
在一个示例性实施例中,上述计算机可读存储介质可以包括但不限于:U盘、只读存储器(Read-Only Memory,简称为ROM)、随机存取存储器(Random Access Memory,简称为RAM)、移动硬盘、磁碟或者光盘等各种可以存储计算机程序的介质。
本发明的实施例还提供了一种电子装置,包括存储器和处理器,该存储器中存储有计算机程序,该处理器被设置为运行计算机程序以执行上述任一项方法实施例中的步骤。
在一个示例性实施例中,上述电子装置还可以包括传输设备以及输入输出设备,其中,该传输设备和上述处理器连接,该输入输出设备和上述处理器连接。
本实施例中的具体示例可以参考上述实施例及示例性实施方式中所描述的示例,本实施例在此不再赘述。
显然,本领域的技术人员应该明白,上述的本发明实施例的各模块或各步骤可以用通用的计算装置来实现,它们可以集中在单个的计算装置上,或者分布在多个计算装置所组成的网络上,它们可以用计算装置可执行的程序代码来实现,从而,可以将它们存储在存储装置中由计算装置来执行,并且在某些情况下,可以以不同于此处的顺序执行所示出或描述的步骤,或者将它们分别制作成各个集成电路模块,或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样,本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的可选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。凡在本发明的原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (23)

  1. 一种数据发送方法,应用于第一站点STA,所述第一STA附属于第一多链路设备MLD,所述方法包括:
    发送指示发送消息至第二STA;其中,所述指示发送消息用于指示所述第一STA准备在预先获取的第一传输机会TXOP内发送数据单元至所述第二STA;所述第二STA附属于第二MLD;
    根据第三STA在预设的帧间距时长内接收数据单元或指示发送消息的情况执行以下操作:在所述第一TXOP内发送数据单元至第二STA,或者,停止发送数据单元至第二STA;
    其中,所述第三STA附属于所述第一MLD。
  2. 根据权利要求1所述的方法,其中,所述根据第三STA在预设的帧间距时长内接收数据单元或指示发送消息的情况执行以下操作:在第一TXOP内发送数据单元至第二STA,或者,停止发送数据单元至第二STA,包括:
    在所述第一MLD为不支持同时收发non-STR MLD,所述第二MLD为支持STR的MLD,且所述第三STA在所述帧间距时长内未接收目标地址为所述第三STA的数据单元或指示发送消息的情况下,所述第一STA在所述第一TXOP内发送数据至第二STA;或者,
    在所述第一MLD为支持STR的MLD,所述第二MLD为non-STR MLD,且所述第三STA在所述帧间距时长内未接收第四STA发送的数据单元或指示发送消息的情况下,所述第一STA在所述第一TXOP内发送数据至第二STA;其中,所述第四STA附属于所述第二MLD;或者,
    在所述第一MLD为不支持同时收发non-STR MLD,所述第二MLD为non-STR MLD,且满足以下条件的情况下,所述第一STA在所述第一TXOP内发送数据至第二STA:
    所述第三STA在所述帧间距时长内未接收目标地址为所述第三STA的数据单元或指示发送消息,所述第三STA在所述帧间距时长内未接收第四STA发送的数据单元或指示发送消息。
  3. 根据权利要求2所述的方法,其中,所述根据第三STA在预设的帧间距时长内接收数据单元或指示发送消息的情况执行以下操作:在第一TXOP内发送数据单元至第二STA,或者,停止发送数据单元至第二STA,还包括:
    在所述第一MLD为non-STR MLD,且所述第三STA在所述帧间距时长内接收到目标地址为所述第三STA的数据单元或指示发送消息的情况下,所述第一STA停止发送数据单元至所述第二STA,和/或,在所述第三STA返回确认ACK帧后,所述第一STA重新发送所述指示发送消息至所述第二STA;或者,
    在所述第二MLD为non-STR MLD,且所述第三STA在所述帧间距时长内接收到所述第四STA发送的数据单元或指示发送消息的情况下,所述第一STA停止发送数据单元至所述第二STA,和/或,在所述第三STA返回确认ACK帧后,所述第一STA重新发送所述指示发送消息至所述第二STA。
  4. 根据权利要求1所述的方法,其中,所述指示发送消息包括以下至少之一:
    所述第一STA的媒体介入控制层MAC地址、所述第二STA的MAC地址、所述指示发送消息的帧类型、第一TXOP时长、帧校验序列、所述第一MLD的STR指示信息;
    其中,所述第一MLD的STR指示信息用于指示所述第一MLD是否为支持STR的MLD。
  5. 根据权利要求4所述的方法,其中,所述第一TXOP时长包括以下至少之一:
    所述第一STA发送所述指示发送消息至所述第二STA的时长;短帧帧间距SF-IFS时长;所述第一STA发送数据单元至所述第二STA的时长;所述第一STA发送的所述数据单元后的短帧间距SIFS时长;用于指示数据包收发情况的确认ACK包的发送时长;
    其中,所述SF-IFS时长用于指示所述帧间距时长。
  6. 根据权利要求5所述的方法,其中,所述SF-IFS时长根据以下对象确定:
    所述指示发送消息在所允许的最远间距的两个STA之间的发送时长,MLD对所述指示发送消息的处理时长。
  7. 根据权利要求1所述的方法,其中,所述发送指示发送消息至第二STA,包括:
    通过调制阶数小于或等于预设的调制阶数阈值的调制编码方案MCS发送所述指示发送消息至所述第二STA;和/或,
    通过抗干扰性高于或等于预设的抗干扰阈值,和/或信噪比SNR大于或等于预设的SNR阈值的子载波段发送所述指示发送消息至所述第二STA。
  8. 根据权利要求4至6任一项中所述的方法,其中,所述发送指示发送消息至第二STA,包括:
    发送所述指示发送消息至所述第二STA,以供所述第二MLD的管理实体根据所述指示发送消息指示第四STA在预设时段内停止发送数据单元至所述第一STA和/或所述第三STA;
    其中,所述第四STA附属于所述第二MLD,所述预设时段用于指示所述第一TXOP时长对应的时段。
  9. 根据权利要求8所述的方法,其中,所述第二MLD的管理实体根据所述指示发送消息指示第四STA在预设时段内停止发送数据单元至所述第一STA和/或所述第三STA,包括:
    在所述第四STA正在第二TXOP内发送数据单元至所述第一STA和/或所述第三STA的情形下,所述第二MLD的管理实体指示所述第四STA执行以下操作:
    发送当前数据单元至所述第一STA和/或所述第三STA,并接收所述第一STA和/或所述第三STA根据所述数据单元返回的确认BA帧;
    在所述第二TXOP未结束的情形下,停止发送数据至所述第一STA和/或所述第三STA直至所述第一TXOP结束;或者,在预设的空闲时长内停止发送数据至所述第一STA和/或所述第三STA;其中,所述空闲时长大于或等于所述第四STA正在发送的数据中的SIFS时长。
  10. 根据权利要求1所述的方法,其中,所述第一MLD与所述第二MLD中的至少一个为non-STR MLD。
  11. 一种数据接收方法,应用于第二STA,所述第二STA附属于第二MLD,所述方法包括:
    接收第一STA发送的指示发送消息;其中,所述指示发送消息用于指示所述第一STA准备在预先获取的第一TXOP内发送数据至所述第二STA;所述第一STA附属于第一MLD;
    接收所述第一STA根据第三STA在预设的帧间距时长内接收数据单元或指示发送消息的情况以在所述第一TXOP内发送的数据单元;其中,所述第三STA附属于所述第一MLD。
  12. 根据权利要求11所述的方法,其中,所述接收所述第一STA根据第三STA在预设的帧间距时长内接收数据单元或指示发送消息的情况以在第一TXOP内发送的数据单元,包括:
    在所述第一MLD为不支持同时收发non-STR MLD,所述第二MLD为支持STR的MLD,且所述第三STA在所述帧间距时长内未接收目标地址为所述第三STA的数据单元或指示发送消息的情况下,接收所述第一STA在所述第一TXOP内发送的数据单元;或者,
    在所述第一MLD为支持STR的MLD,所述第二MLD为non-STR MLD,且所述第三STA在所述帧间距时长内未接收第四STA发送的数据单元或指示发送消息的情况下,接收所述第一STA在所述第一TXOP内发送的数据单元;其中,所述第四STA附属于所述第二MLD;或者,
    在所述第一MLD为不支持同时收发non-STR MLD,所述第二MLD为non-STR MLD,且满足以下条件的情况下,接收所述第一STA在所述第一TXOP内发送的数据单元:
    所述第三STA在所述帧间距时长内未接收目标地址为所述第三STA的数据单元或指示发送消息,所述第三STA在所述帧间距时长内未接收第四STA发送的数据单元或指示发送消息。
  13. 根据权利要求11所述的方法,其中,所述指示发送消息包括以下至少之一:
    所述第一STA的媒体介入控制层MAC地址、所述第二STA的MAC地址、所述指示发送消息的帧类型、第一TXOP时长、帧校验序列、所述第一MLD的STR指示信息;
    其中,所述第一MLD的STR指示信息用于指示所述第一MLD是否为支持两条链路同时收发STR的MLD。
  14. 根据权利要求13所述的方法,其中,所述第一TXOP时长包括以下至少之一:
    所述第一STA发送所述指示发送消息至所述第二STA的时长;短帧帧间距SF-IFS时长;所述第一STA发送数据单元至所述第二STA的时长;所述第一STA发送的所述数据单元后的短帧间距SIFS时长;用于指示数据包收发情况的确认ACK包的发送时长;
    其中,所述SF-IFS时长用于指示所述帧间距时长。
  15. 根据权利要求14所述的方法,其中,所述SF-IFS时长根据以下对象确定:
    所述指示发送消息在所允许的最远间距的两个STA之间的发送时长,MLD对所述指示发送消息的处理时长。
  16. 根据权利要求11所述的方法,其中,所述接收第一STA发送的指示发送消息,包括:
    通过调制阶数小于或等于预设的调制阶数阈值的调制编码方案MCS接收所述第一STA发送的所述指示发送消息;和/或,
    通过抗干扰性高于或等于预设的抗干扰阈值,和/或信噪比SNR大于或等于预设的SNR阈值的子载波段接收所述第一STA发送的所述指示发送消息。
  17. 根据权利要求13至16任一项中所述的方法,其中,所述接收第一STA发送的指示发送消息,包括:
    接收所述第一STA发送的所述指示发送消息,以供所述第二MLD的管理实体根据所述指示发送消息指示第四STA在预设时段内停止发送数据单元至所述第一STA和/或所述第三STA;
    其中,所述第四STA附属于所述第二MLD,所述预设时段用于指示所述第一TXOP时长对应的时段。
  18. 根据权利要求17所述的方法,其中,所述第二MLD的管理实体根据所述指示发送消息指示第四STA在预设时段内停止发送数据单元至所述第一STA和/或所述第三STA,包括:
    在所述第四STA正在第二TXOP内发送数据单元至所述第一STA和/或所述第三STA的情形下,所述第二MLD的管理实体指示所述第四STA执行以下操作:
    发送当前数据单元至所述第一STA和/或所述第三STA,并接收所述第一STA和/或所述第三STA根据所述数据单元返回的确认BA帧;
    在所述第二TXOP未结束的情形下,停止发送数据至所述第一STA和/或所述第三STA直至所述第一TXOP结束;或者,在预设的空闲时长内停止发送数据至所述第一STA和/或所述第三STA;其中,所述空闲时长大于或等于所述第四STA正在发送的数据中的SIFS时长。
  19. 根据权利要求11所述的方法,其中,所述第一MLD与所述第二MLD中的至少一个为non-STR MLD。
  20. 一种数据发送装置,应用于第一STA,所述第一STA附属于第一MLD,所述装置包括:
    第一发送模块,设置为发送指示发送消息至第二STA;其中,所述指示发送消息用于指示所述第一STA准备在预先获取的第一传输机会TXOP内发送数据单元至所述第二STA;所述第二STA附属于第二MLD;
    第二发送模块,设置为根据第三STA在预设的帧间距时长内接收数据单元或指示发送消 息的情况执行以下操作:在所述第一TXOP内发送数据单元至第二STA,或者,停止发送数据单元至第二STA;
    其中,所述第三STA附属于所述第一MLD。
  21. 一种数据接收装置,应用于第二STA,所述第二STA附属于第二MLD,所述装置包括:
    第一接收模块,设置为接收第一STA发送的指示发送消息;其中,所述指示发送消息用于指示所述第一STA准备在预先获取的第一TXOP内发送数据至所述第二STA;所述第一STA附属于第一MLD;
    第二接收模块,设置为接收所述第一STA根据第三STA在预设的帧间距时长内接收数据单元或指示发送消息的情况以在所述第一TXOP内发送的数据单元;其中,所述第三STA附属于所述第一MLD。
  22. 一种计算机可读存储介质,所述计算机可读存储介质中存储有计算机程序,其中,所述计算机程序被设置为运行时执行所述权利要求1至10任一项中所述的方法,或者执行权利要求11-19任一项中所述的方法。
  23. 一种电子装置,包括存储器和处理器,所述存储器中存储有计算机程序,所述处理器被设置为运行所述计算机程序以执行所述权利要求1至10任一项中所述的方法,或者执行权利要求11-19任一项中所述的方法。
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