WO2023019588A1 - Procédé et appareil de commande d'interaction de trame, dispositif, et support d'enregistrement - Google Patents

Procédé et appareil de commande d'interaction de trame, dispositif, et support d'enregistrement Download PDF

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Publication number
WO2023019588A1
WO2023019588A1 PCT/CN2021/113894 CN2021113894W WO2023019588A1 WO 2023019588 A1 WO2023019588 A1 WO 2023019588A1 CN 2021113894 W CN2021113894 W CN 2021113894W WO 2023019588 A1 WO2023019588 A1 WO 2023019588A1
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WIPO (PCT)
Prior art keywords
phase
link device
downlink
interaction
frame
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PCT/CN2021/113894
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English (en)
Chinese (zh)
Inventor
徐彦超
王泷
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Oppo广东移动通信有限公司
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2021/113894 priority Critical patent/WO2023019588A1/fr
Priority to CN202180099074.3A priority patent/CN117441322A/zh
Publication of WO2023019588A1 publication Critical patent/WO2023019588A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]

Definitions

  • the present disclosure relates to the technical field of wireless communication, and in particular to a frame interaction control method, device, device and storage medium.
  • 802.11be defines enhanced multi-link single radio and enhanced multi-link multi-radio mechanisms.
  • the station multi-link device in the downlink transmission of the enhanced multi-link single radio frequency/enhanced multi-link multi-radio mechanism, there are two stages between the station multi-link device and the access point multi-link device: initial control frame interaction stage and Normal frame interaction phase.
  • the duration of the normal frame interaction phase is determined by whether a frame interaction sequence is completed.
  • the method for judging whether the frame interaction sequence ends by the site multi-link device is as follows: the duration of continuously detecting that the channel state is idle on the working link reaches a certain threshold.
  • the site multi-link device and the access point multi-link device may not agree on the end time of the normal frame interaction phase, resulting in transmission between the site multi-link device and the access point multi-link device mistake.
  • the present disclosure provides a frame interaction control method, device, device and storage medium, which can improve the accuracy of data transmission between a station multi-link device and an access point multi-link device. Described technical scheme is as follows:
  • a frame interaction control method is provided, the method is executed by a station multi-link device, and the method includes:
  • phase control information is used to indicate the end condition of the downlink normal frame interaction phase
  • a frame interaction control method is provided, the method is executed by an access point multi-link device, and the method includes:
  • phase control information is used to indicate the end condition of the downlink normal frame interaction phase
  • a frame interaction control device is provided, the device is used in a site multi-link device, and the device includes:
  • An information interaction module configured to interact with the access point multi-link device for phase control information, where the phase control information is used to indicate the end condition of the downlink normal frame interaction phase;
  • a stage control module configured to end the communication with the access point multi-link device when the end condition is met during the process of downlink normal frame interaction with the access point multi-link device Downlink normal frame interaction stage.
  • a frame interaction control device is provided, the device is used in an access point multi-link device, and the device includes:
  • An information interaction module configured to interact with the station multi-link device for phase control information, where the phase control information is used to indicate the end condition of the downlink normal frame interaction phase;
  • a phase control module configured to end the downlink normal frame interaction with the site multi-link device when the termination condition is met during the process of interacting with the site multi-link device stage.
  • a computer device comprising a processor, a memory and a transceiver
  • the processor is configured to execute the computer program stored in the memory, so as to realize the frame interaction control method as described above.
  • the foregoing processor is an application specific integrated circuit (Application Specific Integrated Circuit, ASIC).
  • ASIC Application Specific Integrated Circuit
  • an embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is loaded and executed by a processor to implement the above frame interaction control method.
  • a computer program product comprising a computer program stored in a computer readable storage medium.
  • the processor of the computer device reads the computer program from the computer-readable storage medium, and the processor executes the computer program, so that the computer device executes the above frame interaction control method.
  • a chip is provided, and the chip is used to run in a computer device, so that the computer device executes the above frame interaction control method.
  • a computer program is provided, the computer program is executed by a processor of a computer device, so as to realize the above frame interaction control method.
  • Phase control information can be exchanged between the station multi-link device and the access point multi-link device to determine the end condition of the downlink normal frame interaction phase, so that the station multi-link device can use the same information as the access point multi-link device
  • a unified end condition is used to judge whether the downlink normal frame interaction phase with the access point multi-link device is over, so as to avoid inconsistencies in the judgment of the end time of the normal frame interaction phase between the site multi-link device and the access point multi-link device It can reduce transmission errors between multi-link devices at the site and multi-link devices at the access point, thereby improving the utilization of air interface resources.
  • Fig. 1 is a schematic diagram of the implementation environment involved in this application.
  • FIG. 2 is a schematic diagram of downlink transmission involved in the present application
  • Fig. 3 is a schematic diagram of a phase end judgment involved in the present application.
  • FIG. 4 is a schematic diagram of downlink transmission involved in the present application.
  • FIG. 5 is a schematic diagram of downlink transmission involved in the present application.
  • Fig. 6 is a flowchart of a frame interaction control method according to an exemplary embodiment
  • Fig. 7 is a flowchart of a frame interaction control method according to an exemplary embodiment
  • Fig. 8 is a flow chart of a frame interaction control method according to an exemplary embodiment
  • Fig. 9 is a schematic diagram of judging the end of the downlink normal frame interaction phase involved in the embodiment shown in Fig. 8;
  • FIG. 10 is a schematic diagram of the end judgment of the downlink normal frame interaction phase involved in the embodiment shown in FIG. 8;
  • FIG. 11 and FIG. 12 are schematic diagrams of two kinds of multi-link transmission involved in the embodiment shown in FIG. 8;
  • Fig. 13 is a flowchart of a frame interaction control method according to an exemplary embodiment
  • Fig. 14 is a schematic diagram of judging the end of the downlink normal frame interaction phase involved in the embodiment shown in Fig. 13;
  • FIG. 15 is a schematic diagram of multi-link transmission involved in the embodiment shown in FIG. 13;
  • Fig. 16 is a block diagram of a frame interaction control device according to an exemplary embodiment
  • Fig. 17 is a block diagram of a frame interaction control device according to an exemplary embodiment
  • Fig. 18 is a schematic structural diagram of a computer device provided by an embodiment of the present application.
  • FIG. 1 is a schematic diagram of an implementation environment involved in this application. As shown in FIG. 1 , the implementation environment may include: several terminal devices 110 and access point devices 120 .
  • the terminal device 110 is a wireless communication device that supports multiple wireless access technologies.
  • the terminal device 110 may support a wireless local area network (Wireless Local Area Network, WLAN) technology and a cellular mobile communication technology.
  • the terminal device 110 may also support a next-generation mobile communication technology of 5G technology.
  • the terminal device 110 can also be a user terminal device, such as a mobile phone (or called a "cellular" phone) and a computer with a mobile terminal, for example, it can be a portable, pocket, hand-held, computer built-in or vehicle-mounted mobile device.
  • a user terminal device such as a mobile phone (or called a "cellular" phone) and a computer with a mobile terminal, for example, it can be a portable, pocket, hand-held, computer built-in or vehicle-mounted mobile device.
  • station Service, STA
  • subscriber unit subscriber unit
  • subscriber station subscriber station
  • mobile station mobile station
  • mobile station mobile station
  • remote station remote station
  • remote terminal remote terminal
  • An access terminal access terminal
  • a user device user terminal
  • a user agent user agent
  • a terminal device user device
  • the terminal device 110 may be a mobile terminal such as a smart phone, a tablet computer, or an e-book reader, or may be a smart wearable device such as smart glasses, a smart watch
  • the terminal device 110 may be a vehicle communication device, for example, a trip computer with a wireless communication function, or a wireless communication device connected externally to the trip computer.
  • the terminal device 110 may also be a roadside device, for example, it may be a street lamp, a signal lamp, or other roadside devices with a wireless communication function.
  • the access point device 120 may be a network-side device in a wireless communication system.
  • the access point device 120 may be a wireless access point in a WLAN system, such as a wireless router, a wireless gateway, and the like.
  • a wireless connection may be established between the access point device 120 and the terminal device 110 through a wireless air interface.
  • the wireless air interface is based on the WLAN technical standard.
  • 802.11be a function capable of supporting 802.11 multilink is defined.
  • one is the station STA multi-link device (Multiple Links Device, MLD), and the other is the access point (Access Point, AP) MLD device.
  • MLD Multiple Links Device
  • AP Access Point
  • the STA MLD and AP MLD that have established multi-links can take advantage of multi-links to send and receive data on multiple links to achieve high throughput and low latency.
  • enhanced multiple link single radio enhanced Multiple Link Single Radio
  • eMLSR enhanced Multiple Link Single Radio
  • eMLMR enhanced multi-link Enhanced Multiple Link Multiple Radio
  • eMLSR Downlink
  • DL Down Link
  • STA MLD and AP MLD will transmit frames with a limited link capability (Link Capability). ), the data rate (data rate) corresponding to the modulation method used is relatively low, and so on. And, at this stage, STA MLD can work on both links simultaneously.
  • FIG. 2 shows a schematic diagram of downlink transmission involved in the present application.
  • the link where the initial control frame interaction succeeds is the link where the normal frame interaction phase is located.
  • the duration of this phase is a frame exchange sequence.
  • Figure 2 shows the downlink transmission process of an eMLSR.
  • the AP MLD will select a link (Link1) for the initial control frame interaction process.
  • Link capability for transmission for example, switch to higher spatial stream and/or higher modulation and coding strategy (Modulation and Coding Scheme, MCS) and/or higher operating bandwidth, etc., while not working on Link2.
  • MCS Modulation and Coding Scheme
  • the mechanism of eMLMR is similar to that of eMLSR, and the DL downlink transmission is also divided into the Initial Control Frame exchange stage and the Normal frame exchange stage. Moreover, STA MLD can work on two links at the same time during the Initial Control Frame exchange phase, but the link capability on these two links is a low link capability (such as lower spatial flow capability); STA MLD In the Normal frame exchange stage, only one link can work, and a higher link capacity is used.
  • the switching process of the two phases of eMLMR is similar to the switching process of eMLSR; the working link in the Normal frame exchange phase is also determined by the Initial Control Frame exchange phase.
  • the duration of the Normal frame exchange phase is also a frame exchange sequence.
  • eMLMR eMLMR
  • eMLSR eMLMR
  • the Initial Control Frame Exchange stage only allows sending and receiving control frames with low modulation orders and/or single spatial streams, while in eMLMR, higher modulation orders and/or multiple spatial streams can be allowed Interaction with dataframes.
  • the duration of the Normal frame exchange phase between STA MLD and AP MLD is determined by whether a frame exchange sequence (frame exchange sequence) is completed.
  • a frame exchange sequence (frame exchange sequence) is completed.
  • Figure 3 shows a schematic diagram of a stage end judgment involved in this application.
  • PIFS Priority Inter Frame Space
  • FIG. 4 shows a schematic diagram of downlink transmission involved in this application.
  • the scheme shown in Figure 3 has the following shortcomings in judging the duration of the Normal frame exchange phase:
  • AP MLD will not receive the corresponding acknowledgment frame (Acknowledgment) from STA MLD, and AP MLD may adopt a retransmission strategy , but when the AP MLD selects the retransmission time point, the AP MLD will first judge that the Acknowledgment confirmation frame has not been received (that is, the AP MLD has not received the confirmation frame within a certain period of time (Ack Timeout) after sending the DL data frame), Channel access will then be re-executed.
  • Acknowledgment acknowledgment
  • Channel access will then be re-executed.
  • FIG. 5 shows a schematic diagram of downlink transmission involved in this application.
  • the AP MLD may also adopt a retransmission strategy, so that the STA MLD shown in Figure 3 will also appear The judgment of whether the frame exchange sequence ends does not match with the AP MLD.
  • a subsequent embodiment of the present application proposes a scheme in which the STA MLD and the AP MLD interact to determine a unified criterion for judging the end of the downlink Normal frame exchange phase.
  • Fig. 6 is a flow chart showing a frame interaction control method according to an exemplary embodiment.
  • the frame interaction control method may be executed by a station multi-link device.
  • the station multi-link device may be the one shown in Fig. 1
  • the method may include the following steps.
  • Step 601 interacting with the access point multi-link device for phase control information, where the phase control information is used to indicate the end condition of the downlink normal frame interaction phase.
  • the station multi-link device and the access point multi-link device Interaction of phase control information can be performed between the multi-link devices of the access point, so as to define a unified downlink normal frame interaction phase end judgment condition between the multi-link device of the station and the multi-link device of the access point.
  • Step 602 During the downlink normal frame interaction process with the access point multi-link device, when the end condition is met, end the downlink normal frame interaction phase with the access point multi-link device.
  • the station multi-link device is in the process of the downlink normal frame interaction between the access point multi-link device, and can judge the downlink normal frame through the unified stage end judgment condition in the station multi-link device and the access point multi-link device Whether the interaction phase is over.
  • phase control information can be exchanged between the site multi-link device and the access point multi-link device to determine the end condition of the downlink normal frame interaction phase, so that the site multi-link
  • the road device can use the end condition unified with the access point multi-link device to judge whether the downlink normal frame interaction phase with the access point multi-link device is over, so as to avoid the occurrence of site multi-link devices and access point multi-link
  • the end time of the normal frame interaction stage of the road device is inconsistent, reducing the transmission error between the multi-link device of the site and the multi-link device of the access point, thereby improving the utilization rate of air interface resources.
  • Fig. 7 is a flow chart showing a frame interaction control method according to an exemplary embodiment, the frame interaction control method may be executed by an access point multi-link device, for example, the access point multi-link device may be 1 shows the access point device 120 in the implementation environment. As shown in Fig. 7, the method may include the following steps.
  • Step 701 interacting with the station multi-link device for phase control information, where the phase control information is used to indicate the end condition of the downlink normal frame interaction phase.
  • Step 702 During the downlink normal frame interaction process with the site multi-link device, when the end condition is met, end the downlink normal frame interaction phase with the site multi-link device.
  • the phase control information interaction can be performed between the access point multi-link device and the station multi-link device to determine the end condition of the downlink normal frame interaction phase, so that the access point
  • the multi-link device can use the end condition unified with the site multi-link device to judge whether the downlink normal frame interaction phase with the site multi-link device is over, avoiding the occurrence of site multi-link devices and access point multi-link devices
  • the judgment of the end time of the normal frame interaction phase is inconsistent, reducing the transmission error between the site multi-link device and the access point multi-link device, thereby improving the utilization of air interface resources.
  • the above end condition may be configured by the access point multi-link device to the station multi-link device.
  • Fig. 8 is a flow chart showing a frame interaction control method according to an exemplary embodiment.
  • the frame interaction control method may be executed interactively between an access point multi-link device and a station multi-link device, for example, the station
  • the multi-link device may be the terminal device 110 in the implementation environment shown in FIG. 1
  • the access point multi-link device may be the access point device 120 in the implementation environment shown in FIG. 1 .
  • the method may include the following steps.
  • Step 801 the access point multi-link device sends phase control information to the station multi-link device; correspondingly, the station multi-link device receives the phase control information; the phase control information is used to indicate the end condition of the downlink normal frame interaction phase.
  • the access point multi-link device may directly notify the station multi-link device of the end condition of the downlink normal frame interaction phase through the phase control information.
  • the access point multi-link device may send phase control information to the station multi-link device during the initial control frame interaction stage with the station multi-link device.
  • the station multi-link device receives the phase control information sent by the access point multi-link device during the initial control frame interaction phase with the access point multi-link device.
  • one or more downlink is notified to the station multi-link device.
  • the phase control information includes the duration of the downlink normal frame interaction phase; or, the phase control information includes an end time point of the downlink normal frame interaction phase.
  • the end condition of the above-mentioned downlink normal frame interaction phase may be a condition related to the end time point of the downlink normal frame interaction phase, and correspondingly, the phase control information includes the end time of the downlink normal frame interaction phase Point-related time information; wherein, the end time point of the downlink normal frame interaction phase may be a time point that has been determined before the downlink normal frame interaction phase.
  • the time information may be a duration that indirectly indicates the end time point of the downlink normal frame interaction phase, that is, the duration of the downlink normal frame interaction phase; or, the time information may also be the end of the downlink normal frame interaction phase point in time.
  • the phase control information is an initial control frame.
  • the control information at this stage is carried by the initial control frame.
  • the access point multi-link device may send the initial control frame to the station multi-link device.
  • the station The multi-link device can return a Clear To Send (CTS) response frame to the multi-link device of the access point to interactively determine information such as the link used in the subsequent downlink normal frame interaction phase.
  • CTS Clear To Send
  • the access point multi-link device may multiplex the initial control frame to indicate the termination condition of the downlink normal frame interaction phase.
  • the duration or end time of the downlink normal frame interaction phase may be carried through a reserved field in the initial control frame.
  • the solution shown in the embodiment of this application can also improve the frame structure of the initial control frame, add a field to the initial control frame, and use the added field to carry the duration or end time of the above-mentioned downlink normal frame interaction phase point.
  • the multi-link device of the access point may also create a new A downlink frame is added as the above-mentioned stage control information. That is to say, in this embodiment of the application, during the initial control frame interaction phase, the multi-link device of the access point may carry the duration or end time of the above normal downlink frame interaction phase through other downlink frames other than the initial control frame .
  • the access point multi-link device may also send phase control information to the station multi-link device at a time point other than the initial control frame interaction phase. For example, when the downlink normal frame interaction phase starts, phase control information is sent to the station multi-link device; optionally, the phase control information may be a new downlink frame in the downlink normal frame interaction phase.
  • Step 802 In the process of the downlink normal frame interaction between the station multi-link device and the access point multi-link device, if the end condition is satisfied, end the downlink normal frame interaction with the access point multi-link device stage.
  • the station multi-link device when the above end condition is a condition related to the end time point of the downlink normal frame interaction phase, the station multi-link device performs the process of downlink normal frame interaction with the access point multi-link device , if the current time reaches or exceeds the end time point of the downlink normal frame interaction phase, the downlink normal frame interaction phase with the access point multi-link device ends.
  • the end time of the current downlink normal frame interaction phase can be directly or indirectly indicated by the end condition point to determine whether the current downlink normal frame interaction phase is over.
  • the site multi-link device can directly compare the end time point contained in the phase control information with the current time, and if the current time reaches or If the end time point of the downlink normal frame interaction phase is exceeded, the downlink normal frame interaction phase with the access point multi-link device ends; or, before the end time point of the downlink normal frame interaction phase arrives, the station multi-link device A timer can be set according to the end time point of the downlink normal frame interaction phase. The timer reaches its timing duration at the end time point of the downlink normal frame interaction phase. The timer is used to trigger the site multi-link when the timing duration is reached. The device ends the downlink normal frame interaction phase with the multi-link device of the access point.
  • the site multi-link device when the phase control information includes the duration of the downlink normal frame interaction phase, obtains the downlink normal frame interaction phase according to the duration and the start time point of the downlink normal frame interaction phase The end time point of the stage.
  • the site multi-link device can firstly use the duration of the downlink normal frame interaction phase time, and a start time point of the downlink normal frame interaction phase known by the station multi-link device and the access point multi-link device to determine the end time point of the downlink normal frame interaction phase.
  • the start time point of the downlink normal frame interaction phase is the end time point of the initial control frame in the initial control frame interaction phase
  • the start time point of the downlink normal frame interaction phase is the end time point of the response frame of the initial control frame in the initial control frame interaction phase.
  • the start time point of the downlink normal frame interaction phase known by the station multi-link device and the access point multi-link device may be the end of a specific frame in the initial control frame interaction phase
  • the time point for example, can be the end time point of the initial control frame Initial Control frame sent by the access point multi-link device, or it can also be the response frame (such as CTS frame) of the station multi-link device to the above-mentioned initial control frame end time point of .
  • the start time point of the above-mentioned downlink normal frame interaction phase may also be other time points other than the end time point of a specific frame in the initial control frame interaction phase, for example, it may be a time point in the initial control frame interaction phase
  • the start time point of a specific frame or, it can also be the time point obtained by delaying or advancing the end time point of a specific frame in the initial control frame interaction phase, etc., only the downlink normal frame is required
  • the starting time point of the interaction phase is only known by the station multi-link device and the access point multi-link device.
  • the above-mentioned stage control information may also include a switching delay time, and the switching delay time is used to indicate a time delay for switching from the downlink normal frame interaction stage to the initial control frame interaction stage.
  • the above end condition may also be a condition related to the frame interaction in the downlink normal frame interaction phase.
  • the control information of this phase may include a switching delay time, which may be different from the normal downlink frame interaction time.
  • the time points corresponding to the specific frame interaction events in the frame interaction phase are used in combination to determine whether the current downlink normal frame interaction phase is over.
  • the station multi-link device terminates the communication with the access point multi-link device
  • the process of the downlink normal frame interaction phase may include:
  • At least one frame interaction with the access point multi-link device ends the downlink normal frame interaction phase with the access point multi-link device.
  • the above target time point is a time point known to both the station multi-link device and the access point multi-link device during the normal downlink frame interaction process.
  • the target time point is a time point corresponding to a specific event known by the station multi-link device and the access point multi-link device in the process of downlink normal frame interaction.
  • the station multi-link device can start timing from the target time point. If the timing reaches the handover delay time, and at least one frame interaction with the access point multi-link device is not completed during the timing, the station multi-link device The device can end the downlink normal frame interaction phase with the multi-link device of the access point.
  • the target time point is an end time point of a downlink frame in the latest successful frame interaction with the access point multi-link device.
  • the completion of a frame interaction between the station multi-link device and the access point multi-link device can be considered as a specific event, and the target time point can be the time point between the station multi-link device and the access point The end time point of the downlink frame in the last completed frame exchange between multi-link devices.
  • the site multi-link device interacts with the access point multi-link device in the process of downlink normal frame interaction, if it does not receive a downlink frame, it can start timing from the time when the reception is completed. If the timing reaches the handover delay time , and at least one frame interaction with the access point multi-link device is not completed during the timing process, the station multi-link device may end the downlink normal frame interaction phase with the access point multi-link device.
  • the above target time point may also be a time point other than the end time point of the downlink frame in the latest successful frame interaction during the normal downlink frame interaction process.
  • the above target time point may be the last successful The end time point of the response frame corresponding to the downlink frame in the frame interaction (for example, the CTS frame fed back by the station multi-link device for the downlink frame), and so on.
  • the access point multi-link device ends the normal downlink frame interaction phase with the station multi-link device when the end condition is met during the process of interacting with the station multi-link device.
  • the access point multi-link device when the access point multi-link device interacts with the downlink normal frame with the station multi-link device, if the current time reaches or exceeds the end time point of the downlink normal frame interaction phase, the The downlink normal frame interaction phase with the site multi-link device.
  • the access point multi-link device obtains the The end time point of the downlink normal frame interaction phase.
  • the start time point of the downlink normal frame interaction phase is the end time point of the initial control frame in the initial control frame interaction phase
  • the start time point of the downlink normal frame interaction phase is the end time point of the response frame of the initial control frame in the initial control frame interaction phase.
  • the phase control information includes a switching delay time, and the switching delay time is used to indicate a time delay for switching from the downlink normal frame interaction phase to the initial control frame interaction phase.
  • the downlink normal frame interaction phase with the site multi-link device ends.
  • the target time point is the end time point of the downlink frame in the latest successful frame interaction with the station multi-link device.
  • the process in which the access point multi-link device side judges whether the current downlink normal frame interaction phase is over by the end condition is the same as the process in which the station multi-link device side judges whether the current downlink normal frame interaction phase is over by the end condition in step 802
  • the process is similar and will not be repeated here.
  • the end condition since a unified end condition is used between the access point multi-link device and the station multi-link device to determine whether the current downlink normal frame interaction phase is over, correspondingly, in order to avoid downlink frame transmission errors, the On the multi-link device side of the access point, the end condition also needs to constrain the sending behavior of the downlink frame.
  • the access point multi-link device when the access point multi-link device interacts with the downlink normal frame with the station multi-link device, when the end time of the target downlink frame does not exceed the end time of the downlink normal frame interaction phase When point, send the target downlink frame;
  • the access point multi-link device interacts with the downlink normal frame with the station multi-link device, when the end time point of the reply confirmation frame corresponding to the target downlink frame does not exceed the end time point of the downlink normal frame interaction phase , to send the target downlink frame.
  • the end condition is a condition related to the end time point of the downlink normal frame interaction phase
  • the access point Before the multi-link device sends the downlink frame, it can first judge whether the end time point of the downlink frame or the end time point of the response frame corresponding to the downlink frame (that is, the above-mentioned reply confirmation frame) does not exceed the normal frame interaction phase. End time point, if yes, then send the downlink frame, so as to ensure that the downlink frame or the reply confirmation frame of the downlink frame can be transmitted before the end of the normal frame interaction phase.
  • the target downlink frame is sent;
  • the end time point of the reply confirmation frame corresponding to the target downlink frame is different from the end time point of the last downlink frame sent.
  • the target downlink frame is sent.
  • the end condition is a condition related to a time point corresponding to a specific event in the downlink normal frame interaction phase
  • the access point multi-link device sends the downlink frame
  • it can first judge the end time point of the downlink frame and the time point corresponding to the specific event (that is, the end time point of the above-mentioned target downlink frame or the reply corresponding to the target downlink frame Confirm whether the duration between the end time of the frame) does not exceed the above switching delay time, if so, it means that the downlink frame can be transmitted before the end of the normal frame interaction phase, and the downlink frame can be sent at this time, otherwise the downlink frame will not be sent frame.
  • the Initial control frame sent by the AP MLD to the STA MLD can carry information indicating the duration/end time point of the Normal frame exchange Phase. Related information can be carried in the following two ways.
  • the Initial Control Frame of AP MLD carries the duration of Normal frame exchange Phase.
  • FIG. 9 shows a schematic diagram of judging the end of the downlink normal frame interaction phase involved in the embodiment of the present application. As shown in Figure 9, the starting point of this Duration can be selected at the end point of the initial control frame of AP MLD.
  • the Initial Control Frame of the AP MLD carries the end time point of the Normal frame exchange Phase (it can be a timestamp timestamp).
  • FIG. 10 shows a schematic diagram of judging the end of the downlink normal frame interaction phase involved in the embodiment of the present application. As shown in Figure 10, the Initial Control Frame directly indicates the end time of the Normal frame exchange Phase.
  • the AP MLD can use the link capability of the Normal Frame Exchange Phase to send the corresponding downlink frame to the STA MLD.
  • FIG. 11 and FIG. 12 show two schematic diagrams of multi-link transmission involved in this embodiment of the present application.
  • the STA MLD does not correctly receive the DL data of the AP MLD (that is, the downlink frame) as an example, through the solution shown in the embodiment of this application, as shown in Figure 11, when the AP MLD judges that When the DL physical layer protocol packet unit (Physical Protocol Data Unit, PPDU) interaction that needs to be retransmitted does not exceed the normal frame exchange phase negotiation end time, you can continue to retransmit the DL to the STA MLD with the link capability of the normal frame exchange phase PPDU; as shown in Figure 12, when the AP MLD judges that the DL PPDU interaction that needs to be retransmitted will exceed the negotiation end time of the Normal Frame Exchange Phase, the AP MLD will give up retransmitting the DL PPDU and wait for the Normal Frame Exchange Phase. Finish.
  • PPDU Physical Protocol Data Unit
  • the access point multi-link device can notify the station multi-link device of the end condition of the downlink normal frame interaction phase through the phase control information, so that the access point multi-link device
  • the end condition unified with the site multi-link device can be used to judge whether the downlink normal frame interaction phase with the site multi-link device is over, so as to avoid the normal frame interaction between the site multi-link device and the access point multi-link device
  • the judgment of the end time of the stage is inconsistent, reducing the transmission error between the multi-link device of the site and the multi-link device of the access point, thereby improving the utilization rate of air interface resources.
  • the above termination condition may be determined through negotiation between the access point multi-link device and the station multi-link device.
  • Fig. 13 is a flow chart showing a frame interaction control method according to an exemplary embodiment.
  • the frame interaction control method may be executed interactively between an access point multi-link device and a station multi-link device, for example, the station
  • the multi-link device may be the terminal device 110 in the implementation environment shown in FIG. 1
  • the access point multi-link device may be the access point device 120 in the implementation environment shown in FIG. 1 .
  • the method may include the following steps.
  • step 1301 the station multi-link device and the access point multi-link device exchange phase control information; the phase control information is used to negotiate the termination condition of the downlink normal frame interaction phase.
  • the process of exchanging phase control information with the access point multi-link device may include:
  • the above-mentioned downlink normal may also be negotiated in the initial control frame interaction phase for the end condition of the downlink normal frame interaction phase.
  • the phase control information includes at least one of a connection establishment request and a connection establishment response corresponding to the connection establishment request;
  • connection establishment request is sent by the multi-link device of the access point, and is a request for establishing an enhanced multi-link single radio frequency or an enhanced multi-link multi-radio connection.
  • the access point multi-link device can send a connection establishment request to the site multi-link device, and the site multi-link device can send a connection establishment request to the access point
  • the peer multilink device returns a connection establishment response.
  • the station multi-link device and the access point multi-link device can multiplex the above connection establishment request and/or connection establishment response to exchange phase control information, so as to negotiate and determine the end condition of the downlink normal frame interaction phase .
  • the above negotiation process may include: the access point multi-link device may send a connection establishment request to the station multi-link device, and the connection establishment request includes information for indicating the end condition of the downlink normal frame interaction phase.
  • the link device accepts the end condition, and returns a connection establishment response to the access point multi-link device; or, the access point multi-link device sends a connection establishment request to the site multi-link device, if the access point multi-link device If it is determined to establish a multi-link connection, a connection establishment response is returned to the access point multi-link device, and the connection establishment response includes information used to indicate the end condition of the downlink normal frame interaction phase.
  • the control information of this phase includes the initial control frame and at least one of the response frame corresponding to the initial control frame.
  • the station multi-link device and the access point multi-link device can multiplex the initial control frame in the initial control frame interaction phase and/or the response frame corresponding to the initial control frame to control the interaction phase. information to negotiate and determine the end conditions of the downlink normal frame interaction phase.
  • the above negotiation process may include: the access point multi-link device may send an initial control frame to the station multi-link device, and the initial control frame includes information for indicating the end condition of the downlink normal frame interaction phase.
  • the link device accepts the end condition, and returns a response frame to the access point multi-link device; or, the access point multi-link device sends an initial control frame to the station multi-link device, and the access point multi-link device sends an initial control frame to the access point multi-link device.
  • the in-point multi-link device returns a response frame, and the response frame includes information for indicating the end condition of the downlink normal frame interaction phase.
  • phase control information For the information contained in the above-mentioned phase control information, reference may be made to the description in the embodiment shown in FIG. 8 , and details are not repeated here.
  • Step 1302 In the process of the downlink normal frame interaction between the station multi-link device and the access point multi-link device, if the end condition is satisfied, end the downlink normal frame interaction with the access point multi-link device stage.
  • the access point multi-link device ends the normal downlink frame interaction phase with the station multi-link device when the end condition is satisfied during the process of interacting with the station multi-link device.
  • step 1302 and step 1303 for the execution process of the above step 1302 and step 1303, reference may be made to the description under step 802 and step 803 in the above embodiment shown in FIG. 8 , which will not be repeated here.
  • AP MLD and STA MLD can negotiate a switching delay time Switch Delay, and this Switch Delay is calculated from a time point that both AP MLD and STA MLD can identify.
  • this Switch Delay is calculated from a time point that both AP MLD and STA MLD can identify.
  • FIG. 14 shows a schematic diagram of judging the end of the downlink normal frame interaction phase involved in the embodiment of the present application.
  • the time point jointly recognized by AP MLD and STA MLD can be defined as the end point of the frame transmitted by AP MLD in the last successful frame interaction between AP MLD and STA MLD.
  • the AP MLD can use the link capability of the Normal Frame Exchange Phase to send the corresponding downlink frame to the STA MLD.
  • FIG. 15 shows a schematic diagram of multi-link transmission involved in this embodiment of the present application.
  • the STA MLD does not correctly receive the DL data of the AP MLD (that is, the downlink frame) as an example, through the scheme shown in the embodiment of this application, when the AP MLD determines that the DL PPDU that needs to be retransmitted When the interaction exceeds the defined Switch Delay, the AP MLD will give up retransmitting the DL PPDU and wait for the end of the Normal Frame Exchange Phase (that is, the time indicated by the Switch Delay).
  • the end condition of the downlink normal frame interaction phase can be negotiated between the access point multi-link device and the site multi-link device through phase control information, so that the access point multi-link
  • the road device can use the same end condition as the site multi-link device to judge whether the downlink normal frame interaction phase with the site multi-link device is over, so as to avoid the occurrence of normal pairing between the site multi-link device and the access point multi-link device
  • the inconsistency of the judgment of the end time of the frame interaction phase reduces the transmission error between the multi-link device of the site and the multi-link device of the access point, thereby improving the utilization rate of air interface resources.
  • Fig. 16 is a block diagram showing a device for controlling frame interaction according to an exemplary embodiment, and the device can be used in a site multi-link device to implement any of the embodiments in Fig. 6 , Fig. 8 and Fig. 13 Steps performed by the link device.
  • the device can include:
  • the information interaction module 1601 is configured to perform phase control information interaction with the access point multi-link device, and the phase control information is used to indicate the end condition of the downlink normal frame interaction phase;
  • the phase control module 1602 is configured to end the communication with the access point multi-link device when the end condition is met during the process of downlink normal frame interaction with the access point multi-link device The downlink normal frame interaction stage.
  • the information interaction module 1601 is configured to receive the phase control information sent by the access point multi-link device.
  • the information interaction module 1601 is configured to receive the information sent by the access point multi-link device during the initial control frame interaction stage with the access point multi-link device.
  • the phase control information is configured to control the access point multi-link device during the initial control frame interaction stage with the access point multi-link device.
  • the phase control information is an initial control frame.
  • the phase control information is used to negotiate an end condition of the downlink normal frame interaction phase.
  • the information interaction module 1601 is configured to establish an enhanced multi-link single radio frequency or enhanced multi-link multi-radio frequency connection with the access point multi-link device, Or, during the initial control frame interaction phase with the access point multi-link device, the stage control information is exchanged with the access point multi-link device.
  • the phase control information includes a duration of the downlink normal frame interaction phase; or, the phase control information includes an end time point of the downlink normal frame interaction phase.
  • the device further includes:
  • An end time point acquisition module configured to acquire according to the duration and the start time point of the downlink normal frame interaction phase when the phase control information includes the duration of the downlink normal frame interaction phase The end time point of the downlink normal frame interaction phase.
  • the start time point of the downlink normal frame interaction phase is the end time point of the initial control frame sent by the access point multi-link device in the initial control frame interaction phase ;
  • the start time point of the downlink normal frame interaction phase is the end time point of the initial control frame sent by the station multi-link device in the initial control frame interaction phase.
  • the phase control module is configured to, during the process of downlink normal frame interaction with the access point multi-link device, if the current time reaches or exceeds the downlink normal frame interaction phase end time point, the downlink normal frame interaction phase with the access point multi-link device ends.
  • the phase control information includes a switching delay time, and the switching delay time is used to indicate a time delay for switching from the downlink normal frame interaction phase to the initial control frame interaction phase.
  • the phase control module 1602 is configured to, during the process of downlink normal frame interaction with the access point multi-link device, if the duration between the current time and the target time point is not is less than the switching delay time, and/or, at least one frame interaction with the access point multi-link device is not successfully completed between the current moment and the target time point, then end the communication with the access point The downlink normal frame interaction phase between multi-link devices.
  • the target time point is an end time point of a downlink frame in a latest successful frame interaction with the access point multi-link device.
  • phase control information can be exchanged between the site multi-link device and the access point multi-link device to determine the end condition of the downlink normal frame interaction phase, so that the site multi-link
  • the road device can use the end condition unified with the access point multi-link device to judge whether the downlink normal frame interaction phase with the access point multi-link device is over, so as to avoid the occurrence of site multi-link devices and access point multi-link
  • the end time of the normal frame interaction stage of the road device is inconsistent, reducing the transmission error between the multi-link device of the site and the multi-link device of the access point, thereby improving the utilization rate of air interface resources.
  • Fig. 17 is a block diagram of an apparatus for controlling frame interaction according to an exemplary embodiment, and the apparatus can be used in an access point multi-link device to implement any of the embodiments in Fig. 7, Fig. 8 and Fig. 13 by Steps performed by an access point multilink device.
  • the device can include:
  • the information interaction module 1701 is configured to interact with the station multi-link device for phase control information, where the phase control information is used to indicate the end condition of the downlink normal frame interaction phase;
  • the phase control module 1702 is configured to end the downlink normal frame with the site multi-link device when the end condition is met during the process of interacting with the site multi-link device for normal downlink frames interactive stage.
  • the information interaction module 1701 is configured to send the phase control information to the station multi-link device.
  • the information interaction module 1701 is configured to send the phase control information to the site multi-link device during the initial control frame interaction phase with the site multi-link device .
  • the phase control information is an initial control frame.
  • the phase control information is used to negotiate an end condition of the downlink normal frame interaction phase.
  • the information interaction module 1701 is configured to establish an enhanced multi-link single radio frequency or enhanced multi-link multi-radio frequency connection with the site multi-link device, or, During the initial control frame interaction phase with the site multi-link device, the phase control information is exchanged with the site multi-link device.
  • the phase control information includes a duration of the downlink normal frame interaction phase; or, the phase control information includes an end time point of the downlink normal frame interaction phase.
  • the device further includes:
  • An end time point acquisition module configured to acquire according to the duration and the start time point of the downlink normal frame interaction phase when the phase control information includes the duration of the downlink normal frame interaction phase The end time point of the downlink normal frame interaction phase.
  • the start time point of the downlink normal frame interaction phase is the end time point of the initial control frame sent by the access point multi-link device in the initial control frame interaction phase ;
  • the start time point of the downlink normal frame interaction phase is the end time point of the initial control frame sent by the station multi-link device in the initial control frame interaction phase.
  • the phase control module 1702 is configured to, during the downlink normal frame interaction process with the station multi-link device, if the current time reaches or exceeds the downlink normal frame interaction phase When the end time point is reached, the downlink normal frame interaction phase with the station multi-link device ends.
  • the device further includes: a sending module, configured to:
  • the site multi-link device when the end time point of the reply confirmation frame corresponding to the target downlink frame does not exceed the end time point of the downlink normal frame interaction phase, the The above target downlink frame.
  • the phase control information includes a switching delay time, and the switching delay time is used to indicate a time delay for switching from the downlink normal frame interaction phase to the initial control frame interaction phase.
  • the phase control module 1702 is configured to, during the downlink normal frame interaction process with the station multi-link device, if the duration between the current moment and the target time point is not less than the specified The handover delay time, and/or, if at least one frame interaction with the site multi-link device is not successfully completed between the current time and the target time point, then end the communication with the site multi-link device The downlink normal frame interaction stage.
  • the target time point is an end time point of a downlink frame in a latest successful frame interaction with the station multi-link device.
  • the device further includes: a sending module, configured to:
  • the duration between the end time point of the target downlink frame and the end time point of the last downlink frame sent does not exceed the switching delay time Next, send the target downlink frame;
  • the time between the end time point of the reply confirmation frame corresponding to the target downlink frame and the end time point of the last downlink frame sent is not the same as When the switching delay time is exceeded, the target downlink frame is sent.
  • the phase control information interaction can be performed between the access point multi-link device and the station multi-link device to determine the end condition of the downlink normal frame interaction phase, so that the access point
  • the multi-link device can use the end condition unified with the site multi-link device to judge whether the downlink normal frame interaction phase with the site multi-link device is over, avoiding the occurrence of site multi-link devices and access point multi-link devices
  • the judgment of the end time of the normal frame interaction phase is inconsistent, reducing the transmission error between the site multi-link device and the access point multi-link device, thereby improving the utilization of air interface resources.
  • the device provided by the above embodiment realizes its functions, it only uses the division of the above-mentioned functional modules as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional modules according to actual needs. That is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above.
  • FIG. 18 shows a schematic structural diagram of a computer device 1800 provided by an embodiment of the present application.
  • the computer device 1800 may include: a processor 1801 , a receiver 1802 , a transmitter 1803 , a memory 1804 and a bus 1805 .
  • the processor 1801 includes one or more processing cores, and the processor 1801 executes various functional applications and information processing by running software programs and modules.
  • the receiver 1802 and the transmitter 1803 can be realized as a communication component, and the communication component can be a communication chip.
  • the communication chip can also be called a transceiver.
  • the memory 1804 is connected to the processor 1801 through the bus 1805 .
  • the memory 1804 may be used to store a computer program, and the processor 1801 is used to execute the computer program, so as to implement various steps performed by the network side device or the terminal in the wireless communication system in the above method embodiments.
  • volatile or non-volatile storage devices include but not limited to: magnetic disk or optical disk, electrically erasable and programmable Read Only Memory, Erasable Programmable Read Only Memory, Static Anytime Access Memory, Read Only Memory, Magnetic Memory, Flash Memory, Programmable Read Only Memory.
  • the computer device includes a processor, a memory, and a transceiver (the transceiver may include a receiver and a transmitter, the receiver is used to receive information, and the transmitter is used to send information);
  • the processor when the computer device is implemented as a site multi-link device, the processor is configured to execute the computer program stored in the memory, so as to implement any one of the above-mentioned Figure 6, Figure 8 and Figure 13 In the solutions shown in the embodiments, all or part of the steps are performed by the station multi-link device.
  • the processor when the computer device is implemented as an access point multi-link device, the processor is configured to execute the computer program stored in the memory, so as to implement the above-mentioned FIG. 7 , FIG. 8 and FIG. 13
  • the processor is configured to execute the computer program stored in the memory, so as to implement the above-mentioned FIG. 7 , FIG. 8 and FIG. 13
  • all or part of the steps are performed by the multi-link device of the access point.
  • the embodiment of the present application also provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is loaded and executed by a processor to realize the above-mentioned information in FIG. 6 , FIG. 7 , FIG. 8 and FIG. 13 .
  • each step is executed by the station multi-link device or the access point multi-link device.
  • the present application also provides a computer program product, which includes a computer program, and the computer program is stored in a computer-readable storage medium.
  • the processor of the computer device reads the computer program from the computer-readable storage medium, and the processor executes the computer program, so that the computer device executes the above-mentioned methods shown in FIG. 6, FIG. 7, FIG. 8 and FIG. Each step performed by the link device or the multi-link device of the access point.
  • the present application also provides a chip, which is used to run in a computer device, so that the computer device executes the methods shown in Fig. 6, Fig. 7, Fig. 8 and Fig. 13 above, and the site multi-link device Or the various steps performed by the multi-link device of the access point.
  • the present application also provides a computer program, the computer program is executed by the processor of the computer device, so as to implement the above-mentioned method shown in FIG. 6 , FIG. 7 , FIG. 8 and FIG. 13 . Steps performed by the in-point multilink device.
  • the above-mentioned processor is an application-specific integrated circuit (ASIC).
  • ASIC application-specific integrated circuit
  • the functions described in the embodiments of the present application may be implemented by hardware, software, firmware or any combination thereof.
  • the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
  • Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a storage media may be any available media that can be accessed by a general purpose or special purpose computer.

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Abstract

La présente divulgation se rapporte au domaine technique des communications sans fil. Un procédé et un appareil de commande d'interaction de trame, un dispositif, et un support d'enregistrement sont divulgués. Le procédé consiste à : exécuter une interaction d'informations de commande d'étape avec un dispositif à liaisons multiples de point d'accès, les informations de commande d'étape étant utilisées pour indiquer une condition de fin d'une étape d'interaction de trame normale de liaison descendante ; et, dans un procédé d'exécution d'une interaction de trame normale de liaison descendante avec le dispositif à liaisons multiples de point d'accès, mettre fin à l'étape d'interaction de trame normale de liaison descendante avec le dispositif à liaisons multiples de point d'accès lorsque la condition de fin est satisfaite. La présente solution réduit la survenue d'erreurs de transmission entre un dispositif à liaisons multiples de point de station et un dispositif à liaisons multiples de point d'accès, ce qui permet d'améliorer le taux d'utilisation de ressources d'interface radio.
PCT/CN2021/113894 2021-08-20 2021-08-20 Procédé et appareil de commande d'interaction de trame, dispositif, et support d'enregistrement WO2023019588A1 (fr)

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PCT/CN2021/113894 WO2023019588A1 (fr) 2021-08-20 2021-08-20 Procédé et appareil de commande d'interaction de trame, dispositif, et support d'enregistrement
CN202180099074.3A CN117441322A (zh) 2021-08-20 2021-08-20 帧交互控制方法、装置、设备及存储介质

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112054966A (zh) * 2020-09-01 2020-12-08 首都师范大学 多路传输数据调度方法、装置及设备
WO2021003181A1 (fr) * 2019-07-01 2021-01-07 Qualcomm Incorporated Signalisation pour communication à liaisons multiples dans un réseau local sans fil (wlan)

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021003181A1 (fr) * 2019-07-01 2021-01-07 Qualcomm Incorporated Signalisation pour communication à liaisons multiples dans un réseau local sans fil (wlan)
CN112054966A (zh) * 2020-09-01 2020-12-08 首都师范大学 多路传输数据调度方法、装置及设备

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