WO2022105634A1 - 一种无线局域网中的通信方法以及通信设备 - Google Patents

一种无线局域网中的通信方法以及通信设备 Download PDF

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Publication number
WO2022105634A1
WO2022105634A1 PCT/CN2021/129302 CN2021129302W WO2022105634A1 WO 2022105634 A1 WO2022105634 A1 WO 2022105634A1 CN 2021129302 W CN2021129302 W CN 2021129302W WO 2022105634 A1 WO2022105634 A1 WO 2022105634A1
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Prior art keywords
link
start time
identifier
indication
link device
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PCT/CN2021/129302
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English (en)
French (fr)
Inventor
丁报昆
王云贵
茆意伟
张帅帅
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华为技术有限公司
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Priority to EP21893781.1A priority Critical patent/EP4224982A4/en
Publication of WO2022105634A1 publication Critical patent/WO2022105634A1/zh
Priority to US18/320,452 priority patent/US20230292298A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution
    • H04W28/082—Load balancing or load distribution among bearers or channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution
    • H04W28/0827—Triggering entity
    • H04W28/0835—Access entity, e.g. eNB
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution
    • H04W28/09—Management thereof
    • H04W28/0958—Management thereof based on metrics or performance parameters
    • H04W28/0967—Quality of Service [QoS] parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a communication method and communication device in a wireless local area network.
  • a multi-link device includes multiple stations (station, STA).
  • STA stations
  • multi-link devices in WLAN are divided into two categories: access point (AP) multi-link devices (ie AP MLD) and non-access point (non-AP) multi-link devices (ie non- AP MLD).
  • AP access point
  • non-AP non-access point
  • the STA in the access point multilink device is an AP.
  • STAs in non-access point multilink devices are non-AP STAs.
  • One or more links can be established between the non-access point multi-link device and the access point multi-link device, and each link connects a non-AP STA in the non-access point multi-link device and the access point multi-link device.
  • APs perform overlapping basic service set (OBSS) scan operations to scan a specific set of channels to discover neighbor APs.
  • OBSS overlapping basic service set
  • the Quiet Element may require that no frame interaction occurs on the current channel within a certain time interval, thereby ensuring that there will be no interference from other STAs in the basic service set (BSS) during channel measurement.
  • BSS basic service set
  • the present application provides a communication method and communication device in a wireless local area network, which are used to reduce the delay of low-latency services.
  • a first aspect provides a communication method for a wireless local area network, the method comprising: a first multi-link device sending an indication to a second multi-link device through one or more links including the first link, the indication including The start time and the identifier are used to instruct the second multi-link device to perform an operation related to the second link at the start time, where the identifier is the identifier of the second link or the identifier of the frequency band where the second link is located.
  • the first multi-link device sends a first frame to the second multi-link device through the first link, where the first frame may carry the above-mentioned indication.
  • the indication includes a start time and an identifier, and the indication can instruct the second multi-link device to perform an operation related to the second link when the start time reaches the start time.
  • Data interaction is performed on the switched or activated link, and the identifier can be an identifier indicating the second link or an identifier of the frequency band where the second link is located, so that the second multi-link device can perform and the first link when the start time is reached.
  • the operations related to the two links can avoid the time-out of low-latency services due to the link being unavailable, which can reduce the delay of low-latency services.
  • the indication further includes a reason code, and the reason code instructs the second multi-link device to use the second link or avoid the second link at the start time according to the reason code.
  • the first multi-link device can also instruct the second multi-link device to use the second link or avoid the second link at the start time according to the reason code in the instruction, so as to improve the feasibility of the program.
  • the indication further includes a duration
  • the duration indicates a duration for which the second multi-link device continues to perform operations related to the second link.
  • the first multi-link device may further instruct the second multi-link device to perform an operation related to the second link through the duration in the indication, so as to improve the flexibility of multi-link communication .
  • a second aspect provides a communication method in a wireless local area network, the method is applied to a second multi-link device that communicates with a first multi-link device, the method includes: the second multi-link device by including the first link One or more links including receive an instruction from the first multi-link device, the instruction includes a start time and an identifier; the second multi-link device performs an operation related to the second link at the start time according to the instruction, wherein, The identifier is the identifier of the second link or the identifier of the frequency band where the second link is located.
  • the second multi-link device receives a first frame from the first multi-link device, the first frame may carry the indication, the indication includes a start time and an identifier, and the indication may indicate the second multi-link
  • the device reaches the start time, it performs an operation related to the second link, and the related operation can be a handover, activation or avoidance operation, and performs data exchange on the handover or activated link.
  • the identifier of the second link or the identifier of the frequency band where the second link is located so that the second multi-link device performs the operation related to the second link corresponding to the identifier in the instruction at the above-mentioned start time according to the instruction, which can avoid the Link unavailability causes low-latency services to time out, reducing the delay of low-latency services.
  • the indication further includes a reason code
  • the reason code indicates to use the second link or avoid the second link at the start time according to the reason code.
  • the second multi-link device may determine, according to the reason code in the indication, whether to use the second link corresponding to the identifier or avoid the second link corresponding to the identifier, so as to improve the implementability of the solution. sex.
  • the second multi-link device performs an operation related to the second link at the start time according to the instruction, including: if the reason code instructs the second multi-link device to avoid the second link, And the second multi-link device is a single radio frequency non-access point multi-link device, then the second multi-link device changes the working frequency band of the radio frequency circuit at the start time.
  • the second multi-link device is a single-frequency non-access point multi-link device, and can only perform data exchange with the first multi-link device through one frequency band, and the second multi-link device
  • the second link indicated by the flag can be avoided according to the reason code to switch to other frequency bands, which can improve the feasibility of this solution.
  • the indication further includes a duration
  • the duration indicates a duration for which the operation related to the second link is continuously performed.
  • the second multi-link device may also limit the duration of its own operations related to the second link according to the duration in the indication, so as to improve the flexibility of multi-link communication.
  • the second multi-link device may be a non-access point multi-link device that does not have the capability of simultaneously receiving and transmitting data on different links, that is, the second multi-link device is performing During uplink transmission, downlink data cannot be received on other links, and the second multi-link device may receive the above indication on one or more links, thereby improving the reliability of the solution.
  • a third aspect provides a communication device, comprising: a sending unit configured to send an indication to a second multi-link device through one or more links including the first link, the indication includes a start time and an identifier, and the indication It is used to instruct the second multi-link device to perform an operation related to the second link at the start time, where the identifier is an identifier of the second link or an identifier of a frequency band where the second link is located.
  • the communication device is configured to perform the method of the first aspect or any one of the implementations of the first aspect.
  • a fourth aspect provides a communication device, comprising: a receiving unit configured to receive an indication from the first multi-link device through one or more links including the first link, where the indication includes a start time and an identifier;
  • the processing unit is configured to perform an operation related to the second link at the start time according to the instruction, where the identifier is an identifier of the second link or an identifier of a frequency band where the second link is located.
  • the communication device is configured to perform the method of the second aspect or any one of the implementations of the second aspect.
  • a fifth aspect provides a computer device, including: a processor, a memory, and a communication interface, where the processor is configured to execute instructions stored in the memory, so that the communication device executes the first aspect or any one of the optional first aspects
  • the method provided by the method, the communication interface is used to receive or send an indication.
  • a sixth aspect provides a computer device, including: a processor, a memory, and a communication interface, where the processor is configured to execute instructions stored in the memory, so that the communication device executes the second aspect or any one of the optional second aspects
  • the method provided by the method, the communication interface is used to receive or send an indication.
  • a seventh aspect provides a computer-readable storage medium, where a program is stored in the computer-readable storage medium, and when the computer executes the program, the method provided in the foregoing first aspect or any optional manner of the first aspect is performed.
  • An eighth aspect provides a computer-readable storage medium, where a program is stored in the computer-readable storage medium, and when the computer executes the program, the method provided in the foregoing second aspect or any optional manner of the second aspect is performed.
  • a ninth aspect provides a computer-readable storage medium, where a program is stored in the computer-readable storage medium, and when the computer executes the program, the method provided in the third aspect or any optional manner of the third aspect is performed.
  • a tenth aspect provides a computer program product.
  • the computer program product When the computer program product is executed on a computer, the computer executes the method provided in the foregoing first aspect or any optional manner of the first aspect.
  • the first multilink device sends an instruction to the second multilink device, so that the second multilink device performs an operation related to the second link corresponding to the identifier in the instruction at the start time in the instruction, so that the second multilink device performs an operation related to the second link corresponding to the identifier in the instruction.
  • the link device performs data interaction of the low-latency service with the first multi-link device, executes the low-latency service in time, and reduces the delay of the low-latency service.
  • FIG. 1 is a schematic diagram of a system architecture of multi-link communication provided by an embodiment of the present application
  • FIG. 2 is an embodiment of a communication method for a wireless local area network provided by an embodiment of the present application
  • FIG. 3 is a schematic diagram of data interaction provided by an embodiment of the present application.
  • FIG. 4 is another schematic diagram of data interaction provided by an embodiment of the present application.
  • FIG. 5 is another embodiment of a communication method for a wireless local area network provided by an embodiment of the present application.
  • FIG. 6 is another schematic diagram of data interaction provided by an embodiment of the present application.
  • FIG. 7 is another embodiment of a communication method for a wireless local area network provided by an embodiment of the present application.
  • FIG. 8 is another schematic diagram of data interaction provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a computer device provided by an embodiment of the application.
  • FIG. 12 is a schematic structural diagram of a computer device provided by an embodiment of the present application.
  • Embodiments of the present application provide a communication method and communication device in a wireless local area network, which are used to reduce the delay of low-latency services.
  • the wireless device supports multi-link communication, which means that the wireless device supports simultaneous communication on multiple frequency bands, or simultaneous communication on different channels of the same frequency band.
  • Wireless devices that support multi-link communication are often referred to as multi-link devices (MLDs).
  • a multi-link device includes multiple stations (station, STA).
  • Multi-link devices in wireless local area networks (WLAN) are divided into two categories: access point (AP) multi-link devices (ie AP MLD) and non-access point (non-AP) multi-link devices.
  • AP access point
  • non-AP non-access point
  • the STA in the access point multilink device is an AP.
  • STAs in non-access point multilink devices are non-AP STAs.
  • One or more links can be established between the non-access point multi-link device and the access point multi-link device, and each link connects a non-AP STA in the non-access point multi-link device and the access point multi-link device.
  • the system architecture of multi-link communication includes at least one first multilink device and at least one second multilink device, wherein the first multilink device is an access point multilink device, and the access point multilink device includes multiple APs, such as AP1, AP2, ..., APn as shown in the figure.
  • the second multi-link device is a non-access point multi-link device, and the non-access point multi-link device includes a plurality of non-AP STAs, such as STA1, STA2, ..., STAn as shown in the figure.
  • One or more links can be established between the non-access point multi-link device and the access point multi-link device, and each link connects a non-AP STA in the non-access point multi-link device and the access point multi-link device.
  • APs perform overlapping basic service set (OBSS) scan operations to scan a specific set of channels to discover neighbor APs.
  • OBSS overlapping basic service set
  • VHT very high throughput
  • the minimum scan duration per channel required by the protocol defaults to 20 time units (time units, TUs) for passive scanning or 10 TUs for active scanning.
  • each channel in the set is scanned at least once every 300 seconds by default, and the default total scan duration is at least 200TUs (passive scan) or 20TUs (active scan).
  • the scanning duration of each channel is generally set to 100TUs, which is about one target beacon transmission time (TBTT), to ensure that neighbors can be heard with high probability during this period.
  • TBTT target beacon transmission time
  • a beacon (Beacon) frame of the AP is generally set to 100TUs, which is about one target beacon transmission time (TBTT), to ensure that neighbors can be heard with high probability during this period.
  • the Quiet Element may require that no frame interaction occurs on the current channel within a certain time interval, thereby ensuring that there will be no interference from other STAs in the basic service set (BSS) during channel measurement.
  • the frame structure of the Quiet Element is shown in Table 1.
  • the element ID (Element ID) field indicates the identification of the element
  • the length (Length) indicates the length of the element
  • the Quiet Count field indicates the beacon interval (beacon interval) where the next quiet interval (quiet interval) is located and the current The number of TBTTs between times
  • the Quiet Period field represents the number of beacon intervals between two quiet intervals
  • the Quiet Duration field represents the duration of the quiet interval
  • the Quiet Offset ) field indicates the offset between the quiet interval start time and the TBTT indicated in the Quiet Count.
  • Quiet Elements can be carried in Beacon frames and Probe Response frames.
  • an embodiment of the present application provides a communication method in a wireless local area network, the method includes: a first multi-link device passes through one or more links including the first link Send an instruction to the second multi-link device, the instruction includes a start time and an identifier, and the instruction is used to instruct the second multi-link device to perform an operation related to the second link at the start time, wherein the identifier is the identifier of the second link or the identifier of the frequency band where the second link is located.
  • the second multi-link device performs an operation related to the second link at the start time according to the instruction, where the identifier is an identifier of the second link or an identifier of a frequency band where the second link is located. In this way, an appropriate link can be selected for the low-latency service when the start time is reached, so as to avoid affecting the execution of the low-latency service.
  • the data interaction between the first multi-link device and the second multi-link device is limited by the type of the second multi-link device, and the second multi-link device is a non-access point device, which may be
  • the single-radio non-access point multi-link device may also be a non-access point multi-link device that does not have the capability of simultaneously receiving and transmitting data on different links, which will be described separately below.
  • Single-radio non-access point multi-link devices refer to non-access point devices that support multi-link protocols but have only one radio frequency circuit that can switch frequency bands.
  • the second multi-link device is a non-access point device:
  • an embodiment of a communication method in a wireless local area network provided by an embodiment of the present application includes:
  • the first multilink device sends an indication to the second multilink device.
  • the first multi-link device sends a first frame to the second multi-link device, and the first frame includes the above indication.
  • the first frame sent by the first multi-link device may be sent only through the first link, or may be sent through multiple links including the first link, which is not specifically limited here.
  • the indication includes a start time and an identifier, and the indication can instruct the second multi-link device to perform an operation related to the second link when the start time reaches the start time.
  • Data exchange is performed on the switched or activated link, and the identifier may be an identifier indicating the second link or an identifier of the frequency band where the second link is located.
  • the above-mentioned first frame may be a Beacon frame, a data frame, or any other broadcast, multicast, or unicast frame that can carry a recommendation element (Recommend Element). If the first frame is not a broadcast frame, the process further includes that the first multi-link device receives an acknowledgement character (ACK) frame for the first frame from the second multi-link device on the second link.
  • ACK acknowledgement character
  • the Recommend Element is the instruction in this embodiment.
  • the Recommend Element may also include a reason code.
  • the reason code may instruct the second multi-link device to avoid the above-mentioned start time when it reaches the above-mentioned start time. Identifies the indicated second link (the first link and the second link are the same link at this time), optional, the reason code can directly instruct the second multi-link device to wake up or switch the second link For other links other than the second link, it is also possible to indicate that the AP on the second link is overloaded, and recommend that the second multi-link device wake up or switch other links other than the second link to perform load balancing.
  • the Recommend Element may further include a duration, where the duration may indicate the duration of the second multi-link device performing operations related to the second link.
  • the Recommend Element may be shown in Table 2 or Table 3 below.
  • the element ID (Element ID) field represents the ID of the element.
  • Length indicates the length of the element.
  • Target Time indicates the start time, which can be a timing synchronization function (TSF) timer (timer), a partial (partial) TSF timer, or a collection of Count, Period, and Offset fields in Quiet Element, as shown in the table 3 shown.
  • TSF timing synchronization function
  • the partial TSF timer uses TSF[10:25] with a total of 16 bits, representing 1-65535TUs, and 0 represents immediate start.
  • Duration represents the duration, which can be in TU, or can be a table-based value (exemplarily, the values 0-15 correspond to different times), and can also take some special values, such as 0 for infinite duration .
  • Band/Link (Band/Link) identification It can represent a specific frequency band, such as 2.4G, 5G, 6G, or the newly defined Link ID in 802.11be, which can be expressed as (operation class ( Operational Class), Channel (Channel), Basic Service Set ID (Basic Service Set ID, BSSID)) triplet.
  • Reason indicates the reason code, and its specific meaning can include OBSS scanning (Scanning) and Channel switching (Switch).
  • the second multi-link device performs an operation related to the second link at the start time according to the instruction.
  • the second multi-link device when the second multi-link device receives the first frame from the first multi-link device, it can obtain the indication in the first frame, and execute the above start time according to the indication and in the indication
  • the identifier corresponds to the operation related to the second link.
  • the reason code in the indication instructs the second multi-link device to use the second link at the start time
  • the second multi-link device can activate or switch to the second link, and use the second link through the second multi-link device.
  • the link exchanges data with the first multi-link device.
  • the exchanged data may be data of a low-latency service, or may be other services running on other links.
  • the reason code in the indication may instruct the second multi-link device to select a link other than the above-mentioned second link at the start time, and the second multi-link device may activate or switch to the selected chain road for data exchange.
  • the reason code may also include other fields, such as: Load Balance, Wake the Corresponding Link Only, Occupied already, Link Recommendation Wait.
  • the load balancing can indicate that the AP load on the second link is too high, and the load needs to be balanced; waking up the specified link can instruct the second multi-link device to wake up the second link, and the second multi-link device does not need to be on the second link.
  • the second link monitors the beacon frame at all times; if it is occupied, it can indicate that the corresponding second link is unavailable, and the second multi-link device can choose to wake up or switch other links; the link recommendation can be to recommend the second multi-link device Using the second link corresponding to the identifier, optionally, the second multi-link device can determine by itself whether to use the second link.
  • the second multi-link device may also use or avoid the second link only for the indicated duration.
  • the first multi-link device may perform the first operation on the second link and cause the second link to become unusable, and the second multi-link device may fail to use the second link.
  • Other links can be woken up to perform low-latency services on the second link, and the first operation can be OBSS scanning, channel switching, or other operations that last for a certain period of time and cause the second link to be unavailable.
  • Figure 3 shows a schematic diagram of data interaction, wherein AP1 is connected to STA1, AP2 is connected to STA2, the first multi-link device sends a Beacon frame to the second multi-link device through AP1, and the Recommend Element in the Beacon frame indicates
  • the second multi-link device knows that the first multi-link device plans to perform OBSS scanning within the above start time and duration, and indirectly instructs the second multi-link device to avoid the AP1 corresponding to the identifier during the start time and duration.
  • the link where it is located selects another link (for example, the dormant link where AP2 is located) to wake up to perform data exchange of low-latency services with the first multi-link device.
  • the first link and the second link are the same. a link.
  • the first multi-link device may also send the above-mentioned indication to the second multi-link device to perform load balancing and the like.
  • FIG 4 Another schematic diagram of data interaction shown in Figure 4, AP1 is connected to STA1, AP2 is connected to STA2, the first multi-link device sends a Beacon frame to the second multi-link device through AP1, and the Recommend Element in the Beacon frame directly recommends The second multi-link device wakes up within the above-mentioned start time and duration and uses other links except the link where the corresponding AP1 is located.
  • the second link and the first link may be the same.
  • the second link may also be a link other than the first link.
  • the first multi-link device causes the second multi-link device to perform an instruction related to the second link corresponding to the identifier in the instruction at the start time in the instruction by sending the instruction to the second multi-link device. operation, so that the second multi-link device avoids or uses the second link to perform data interaction of low-latency services with the first multi-link device, so that data interaction of low-latency services can be performed in time, and low-latency services can be reduced. delay.
  • the second multi-link device is a single-radio non-access point multi-link device:
  • another embodiment of the communication method in the wireless local area network provided by the embodiment of the present application includes:
  • the first multilink device sends an indication to the second multilink device.
  • step 501 in this embodiment reference may be made to the relevant description of step 201 in the communication method in the wireless local area network shown in FIG. 2 , and details are not repeated here.
  • the second multi-link device changes the radio frequency at the start time.
  • the operating frequency band of the circuit If the reason code indicates that the second multi-link device avoids the second link, and the second multi-link device is a single-radio non-access point multi-link device, the second multi-link device changes the radio frequency at the start time.
  • the operating frequency band of the circuit If the reason code indicates that the second multi-link device avoids the second link, and the second multi-link device is a single-radio non-access point multi-link device, the second multi-link device changes the radio frequency at the start time. The operating frequency band of the circuit.
  • the second multi-link device is a single-radio non-access point multi-link device, that is, data exchange between the second multi-link device and the first multi-link device can only be performed through one frequency band.
  • the second link corresponding to the identifier in the instruction is the above-mentioned first link, and the reason code instructs the second multi-link device to switch the frequency band. When the frequency band where the link is located is unavailable, switch the frequency band for data exchange to another frequency band.
  • the second multi-link device may also use the second link only for the indicated duration.
  • the first multi-link device may perform the first operation on the second link and cause the second link to become unavailable, and the first operation may be: OBSS scanning or other operations that last for a certain period of time will make the second link unavailable.
  • AP1 is connected to STA1, and the link between AP2 and STA2 is represented by a dotted line
  • the second multi-link device is a single-radio non-access point multi-link device, the link It may be a virtual link established in the association phase, or it may be a potential link that has not been established
  • the first multi-link device sends a Beacon frame to the second multi-link device through AP1
  • the Recommend Element in the Beacon frame indicates the first
  • the second multi-link device knows that the first multi-link device plans to perform OBSS scanning at the above start time and duration, and the flag indicates the frequency band corresponding to AP1, and the second multi-link device can switch the frequency band within the start time and duration.
  • a frequency band other than the frequency band where AP1 is located such as the frequency band where AP2 is located as shown in Figure 6.
  • the first multi-link device may also send the above-mentioned instruction to the second multi-link device, for example, to wake up the specified link.
  • the second link corresponding to the identifier in the instruction is recommended for use 's link.
  • the first multi-link device causes the second multi-link device to perform an operation related to the second link corresponding to the identifier in the instruction at the start time in the instruction by the first multi-link device through the instruction sent to the second multi-link device. , so that the second multi-link device uses or avoids the second link to perform data interaction of the low-latency service with the first multi-link device, which can improve the reliability of the low-latency service.
  • the second multi-link device is a non-access point multi-link device that does not have the ability to receive and transmit data separately on different links at the same time:
  • the instructions sent by the first multi-link device to the second multi-link device may be sent through all the links in use, which can reduce the number of contactless users who do not have the ability to receive and send data on different links at the same time. The possibility that the in-point multilink device does not receive this indication.
  • another embodiment of the communication method in the wireless local area network includes:
  • the first multi-link device sends an indication to the second multi-link device through multiple links including the first link.
  • the first multi-link device may send the indication to the second multi-link device through multiple activated links connected to the second multi-link device.
  • the specific indication please refer to FIG. 2
  • step 201 in the communication method in the wireless local area network shown will not be repeated here.
  • the second multi-link device performs an operation related to the second link at the start time according to the instruction.
  • the second multi-link device is a non-access point multi-link device that does not have the ability to receive and transmit data on different links at the same time, that is, when the first multi-link device is on multiple links including the first link
  • the second multi-link device may only receive the indication on one of the links.
  • FIG 8 another schematic diagram of data interaction is shown.
  • AP1 is connected to STA1
  • AP2 is connected to STA2.
  • the first multi-link device sends a Beacon frame to the second multi-link device through AP1 and AP2.
  • the Recommend Element in the Beacon frame The second multilink device is instructed to know that the first multilink device plans to perform an OBSS scan at the above start time and duration.
  • STA2 When AP1 sends the Beacon frame, STA2 is sending uplink data. Due to the limitation of its own capability, the second multi-link device cannot receive the Beacon frame sent by AP1.
  • AP2 sends a Beacon frame, AP1 is also sending downlink data. At this time, STA2 can successfully receive the Beacon frame sent by AP2.
  • the Recommend Element indirectly indicates that the second multi-link device can avoid the second link corresponding to the identifier within the start time and duration.
  • the second link is the link where AP1 is located.
  • the second multi-link device wakes up the link where STA2 is located to perform data transmission when AP1 performs OBSS scanning.
  • the first multi-link device may also send the above-mentioned instruction to the second multi-link device, for example, to wake up the specified link.
  • the second link corresponding to the identifier in the instruction is recommended for use 's link.
  • step 202 in the communication method in the wireless local area network shown in FIG. 2 , and details are not repeated here.
  • the first multi-link device causes the second multi-link device to perform an operation related to the second link corresponding to the identifier in the instruction at the start time in the instruction by the first multi-link device through the instruction sent to the second multi-link device. , so that the second multi-link device uses or avoids the second link to perform data interaction of low-latency services with the first multi-link device, so that data interaction of low-latency services can be performed in a timely manner, and the occurrence of low-latency services can be reduced. time delay.
  • FIG. 9 is a schematic diagram of an embodiment of a communication device 90 in an embodiment of the present application.
  • an embodiment of the present application provides a communication device, and the communication device includes:
  • the sending unit 901 is configured to send an instruction to the second multi-link device through one or more links including the first link, the instruction includes a start time and an identifier, and the instruction is used to indicate that the second multi-link device starts The time performs operations related to the second link, where the identifier is an identifier of the second link or an identifier of a frequency band where the second link is located.
  • the indication further includes a reason code, and the reason code instructs the second multi-link device to use the second link or avoid the second link at the start time according to the reason code.
  • the indication further includes a duration, and the duration indicates a duration for which the second multi-link device continues to perform operations related to the second link.
  • the communication device may perform the operations performed by the first multi-link device in the foregoing embodiments shown in FIG. 2 , FIG. 5 , and FIG. 7 , and details are not repeated here.
  • FIG. 10 is a schematic diagram of an embodiment of a communication device 100 in an embodiment of the present application.
  • an embodiment of the present application provides a communication device, and the communication device includes:
  • the receiving unit 1001 is configured to receive an instruction from the first multi-link device through one or more links including the first link, the instruction includes a start time and an identifier; the processing unit 1002 is configured to receive an instruction at the start time according to the instruction Perform operations related to the second link, where the identifier is an identifier of the second link or an identifier of a frequency band where the second link is located.
  • the indication further includes a reason code, and the reason code indicates to use the second link or avoid the second link at the start time according to the reason code.
  • the processing unit 1002 is specifically configured to: if the reason code indicates avoiding the second link and the communication device is a single radio frequency non-access point multi-link device, change the working frequency band of the radio frequency circuit at the start time.
  • the indication further includes a duration, where the duration indicates a duration for which the operation related to the second link is continuously performed.
  • the communication device may perform the operations performed by the second multi-link device in the foregoing embodiments shown in FIG. 2 , FIG. 5 , and FIG. 7 , and details are not described herein again.
  • Computer device 110 includes: processor 1101 , communication interface 1102 , storage system 1103 , and bus 1104 .
  • the processor 1101 , the communication interface 1102 , and the storage system 1103 are connected to each other through a bus 1104 .
  • the processor 1101 is configured to control and manage the actions of the computer device 110.
  • the processor 1101 is configured to execute the steps performed by the storage management apparatus in the method embodiments of FIG. 3 to FIG. 4 .
  • Communication interface 1102 is used to support computer device 110 to communicate.
  • the storage system 1103 is used to store program codes and data of the computer device 110 .
  • the processor 1101 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute the various exemplary logical blocks, modules and circuits described in connection with this disclosure.
  • the processor 1101 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like.
  • the bus 1104 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (Extended Industry Standard Architecture, EISA) bus or the like.
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard Architecture
  • the sending unit 901 in the communication device 90 is equivalent to the communication interface 1102 in the computer device 110 .
  • the computer device 110 in this embodiment may correspond to the first multi-link device in each of the foregoing method embodiments, and the communication interface 1102 in the computer device 110 may implement the features of the first multi-link device in each of the foregoing method embodiments.
  • the functions and/or the various steps implemented will not be repeated here.
  • Computer device 120 includes: processor 1201 , communication interface 1202 , storage system 1203 , and bus 1204 .
  • the processor 1201 , the communication interface 1202 , and the storage system 1203 are connected to each other through a bus 1204 .
  • the processor 1201 is configured to control and manage the actions of the computer device 120.
  • the processor 1201 is configured to execute the steps performed by the processing apparatus in the method embodiments of FIG. 3 to FIG. 4 .
  • Communication interface 1202 is used to support computer device 120 to communicate.
  • the storage system 1203 is used to store program codes and data of the computer device 120 .
  • the processor 1201 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute the various exemplary logical blocks, modules and circuits described in connection with this disclosure.
  • the processor 1201 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like.
  • the bus 1204 may be a peripheral component interconnect standard (Peripheral Component Interconnect, PCI) bus or an Extended Industry Standard Architecture (Extended Industry Standard Architecture, EISA) bus or the like.
  • PCI peripheral component interconnect standard
  • EISA Extended Industry Standard Architecture
  • the receiving unit 1001 in the communication device 100 is equivalent to the communication interface 1202 in the computer device 120 , and the processing unit 1002 in the communication device 100 may be equivalent to the processor 1201 .
  • the computer device 120 in this embodiment may correspond to the second multi-link device in the foregoing method embodiments, and the processor 1201 and the communication interface 1202 in the computer device 120 may implement the second multi-link device in the foregoing method embodiments.
  • the functions and/or various steps performed by the road device are not described again.
  • a computer-readable storage medium is also provided, where computer-executable instructions are stored in the computer-readable storage medium.
  • the processor of the device executes the computer-executable instructions
  • the device executes the above-mentioned Fig. 2, The steps of the communication method in the wireless local area network performed by the first multi-link device in FIG. 5 and FIG. 7 .
  • a computer-readable storage medium is also provided, where computer-executable instructions are stored in the computer-readable storage medium.
  • the processor of the device executes the computer-executable instructions
  • the device executes the above-mentioned Fig. 2, The steps of the communication method in the wireless local area network performed by the second multi-link device in FIG. 5 and FIG. 7 .
  • a computer program product includes computer-executable instructions, and the computer-executable instructions are stored in a computer-readable storage medium; when a processor of a device executes the computer-executable instructions , the device executes the steps of the communication method in the wireless local area network executed by the first multi-link device in FIG. 2 , FIG. 5 and FIG. 7 .
  • a computer program product includes computer-executable instructions, and the computer-executable instructions are stored in a computer-readable storage medium; when a processor of a device executes the computer-executable instructions , the device executes the steps of the communication method in the wireless local area network executed by the second multi-link device in FIG. 2 , FIG. 5 and FIG. 7 .
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium.
  • all or part of the technical solutions of the present application may be embodied in the form of a software product, and the computer software product is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, A server, or a network device, etc.) executes all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, read-only memory), random access memory (RAM, random access memory), magnetic disk or optical disk and other media that can store program codes .

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Abstract

公开了一种无线局域网中的通信方法以及通信设备。该方法包括：第一多链路设备通过包括第一链路在内的一条或多条链路向第二多链路设备发送指示，以使得第二多链路设备在指示中的开始时间执行与指示中的标识对应的第二链路的相关操作，以避免链路不可用时影响低延时业务的执行，减少低延时业务的时延并提高可靠性。

Description

一种无线局域网中的通信方法以及通信设备
本申请要求与2020年11月20日提交中国国家知识产权局，申请号为202011311795.X，发明名称为“一种无线局域网中的通信方法以及通信设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种无线局域网中的通信方法以及通信设备。
背景技术
随着无线局域网(wireless local area network，WLAN)技术的发展，越来越多的无线设备支持多链路通信。无线设备支持多链路通信，指该无线设备支持同时在多个频段上通信，或者同时在同一频段的不同信道上通信。支持多链路通信的无线设备通常称为多链路设备(multi-link device，MLD)。多链路设备包括多个站点(station，STA)。目前，WLAN中的多链路设备分为两类：接入点(access point，AP)多链路设备(即AP MLD)和非接入点(non-AP)多链路设备(即non-AP MLD)。接入点多链路设备中的STA为AP。非接入点多链路设备中的STA为non-AP STA。非接入点多链路设备与接入点多链路设备之间可以建立一条或多条链路，每条链路连接非接入点多链路设备中的一个non-AP STA以及接入点多链路设备中的一个AP。一条链路两端的non-AP STA和AP之间具有关联关系。在802.11ax中，AP会进行重叠基本服务集(overlapping basic service set，OBSS)扫描操作，扫描特定集合的信道以发现邻居AP。
静默元素(Quiet Element)可以要求在一定时间区间内，当前信道不发生任何帧交互，进而保证进行信道测量时不会有来自本基本服务集(basic service set，BSS)其他STA的干扰。
当AP MLD的一条链路进行OBSS扫描等操作时，当前链路会处于一段时间内不可使用的状态，该链路上的低时延业务需要等待OBSS扫描完成后才能进行有效的数据传输，低时延业务的时延增加。
发明内容
本申请提供了一种无线局域网中的通信方法以及通信设备，用于减少低延时业务的时延。
第一方面提供了一种无线局域网的通信方法，该方法包括：第一多链路设备通过包括第一链路在内的一条或多条链路向第二多链路设备发送指示，指示包括开始时间和标识，指示用于指示第二多链路设备在开始时间执行和第二链路相关的操作，其中，标识是第二链路的标识或第二链路所在频段的标识。
该方面中，第一多链路设备通过第一链路向第二多链路设备发送第一帧，该第一帧可以携带上述指示。该指示包括开始时间和标识，该指示可以指示第二多链路设备在到达该 开始时间的时候执行和第二链路相关的操作，该相关操作可以是切换、激活或避开操作，并在切换或激活的链路上进行数据交互，该标识可以为指示第二链路的标识或第二链路所在频段的标识，以使得第二多链路设备在到达该开始时间的时候执行和第二链路相关的操作，避免因为链路不可用导致低延时业务超时，可以减少低延时业务的时延。
在一种可能的实施方式中，指示还包括原因码，原因码指示第二多链路设备根据原因码在开始时间使用第二链路或者避开第二链路。
该种可能的实施方式中，第一多链路设备还可以通过指示中的原因码指示第二多链路设备根据原因码在开始时间使用第二链路或者避开第二链路，以提高方案的可实施性。
在一种可能的实施方式中，指示还包括持续时间，持续时间指示第二多链路设备对第二链路相关的操作持续执行的时长。
该种可能的实施方式中，第一多链路设备还可以通过指示中的持续时间指示第二多链路设备执行与第二链路相关的操作的时长，以提高多链路通信的灵活性。
第二方面提供了一种无线局域网中的通信方法，该方法应用于与第一多链路设备通信的第二多链路设备，该方法包括：第二多链路设备通过包括第一链路在内的一条或多条链路接收来自第一多链路设备的指示，指示包括开始时间和标识；第二多链路设备根据指示在开始时间执行和第二链路相关的操作，其中，标识是第二链路的标识或第二链路所在频段的标识。
该方面中，第二多链路设备接收来自第一多链路设备的第一帧，该第一帧中可以携带该指示，该指示包括开始时间和标识，该指示可以指示第二多链路设备在到达该开始时间的时候执行和第二链路相关的操作，该相关操作可以是切换、激活或避开操作，并在切换或激活的链路上进行数据交互，该标识可以为指示第二链路的标识或第二链路所在频段的标识，以使得第二多链路设备根据该指示在上述开始时间执行和该指示中的标识对应的第二链路相关的操作，可以避免因为链路不可用导致低延时业务超时，减少低延时业务的时延。
在一种可能的实施方式中，指示还包括原因码，原因码指示根据原因码在开始时间使用第二链路或者避开第二链路。
该种可能的实施方式中，第二多链路设备可以根据指示中的原因码确定是使用该标识对应的第二链路或避开该标识对应的第二链路，以提高方案的可实施性。
在一种可能的实施方式中，上述步骤第二多链路设备根据指示在开始时间执行和第二链路相关的操作包括：如果原因码指示第二多链路设备避开第二链路，且第二多链路设备为单射频非接入点多链路设备，则第二多链路设备在开始时间改变射频电路的工作频段。
该种可能的实施方式中，第二多链路设备为单频非接入点多链路设备，与第一多链路设备之间只能通过一个频段进行数据交互，第二多链路设备可以根据原因码指示的避开该标识指示的第二链路以切换到其他频段，可以提高本方案的可行性。
在一种可能的实施方式中，指示还包括持续时间，持续时间指示对第二链路相关的操作持续执行的时长。
该种可能的实施方式中，第二多链路设备还可以根据指示中的持续时间限制自己对第 二链路相关操作的时长，提高多链路通信的灵活性。
在一种可能的实施方式中，第二多链路设备可以为不具备同时在不同链路上分别接收和发送数据能力的非接入点多链路设备，即第二多链路设备在进行上行传输时无法在其他链路接收下行数据，第二多链路设备可能可以在一条或多条链路上接收到上述指示，提高方案的可靠性。
第三方面提供了一种通信设备，包括：发送单元，用于通过包括第一链路在内的一条或多条链路向第二多链路设备发送指示，指示包括开始时间和标识，指示用于指示第二多链路设备在开始时间执行和第二链路相关的操作，其中，标识是第二链路的标识或第二链路所在频段的标识。
该通信设备用于执行前述第一方面的方法或第一方面任意一种实施方式。
第四方面提供了一种通信设备，包括：接收单元，用于通过包括第一链路在内的一条或多条链路接收来自第一多链路设备的指示，指示包括开始时间和标识；处理单元，用于根据指示在开始时间执行和第二链路相关的操作，其中，标识是第二链路的标识或第二链路所在频段的标识。
该通信设备用于执行前述第二方面的方法或第二方面任意一种实施方式。
第五方面提供了一种计算机设备，包括：处理器、存储器、以及通信接口，该处理器用于执行该存储器中存储的指令，使得通信设备执行上述第一方面或第一方面任一种可选方式所提供的方法，该通信接口用于接收或发送指示。第五方面提供的通信设备的具体细节可参见上述第一方面或第一方面任一种可选方式，此处不再赘述。
第六方面提供了一种计算机设备，包括：处理器、存储器、以及通信接口，该处理器用于执行该存储器中存储的指令，使得通信设备执行上述第二方面或第二方面任一种可选方式所提供的方法，该通信接口用于接收或发送指示。第六方面提供的通信设备的具体细节可参见上述第二方面或第二方面任一种可选方式，此处不再赘述。
第七方面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保存有程序，当该计算机执行程序时，执行前述第一方面或第一方面任一种可选方式提供的方法。
第八方面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保存有程序，当该计算机执行程序时，执行前述第二方面或第二方面任一种可选方式提供的方法。
九方面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保存有程序，当该计算机执行程序时，执行前述第三方面或第三方面任一种可选方式提供的方法。
第十方面提供了一种计算机程序产品，当该计算机程序产品在计算机上执行时，该计算机执行前述第一方面或第一方面任一种可选方式提供的方法。
第一多链路设备向第二多链路设备发送指示，使得第二多链路设备在指示中的开始时间执行与指示中的标识对应的第二链路相关的操作，以使得第二多链路设备通过使用或避开第二链路，与第一多链路设备进行低延时业务的数据交互，及时执行低延时业务，减少低延时业务的时延。
附图说明
图1为本申请实施例提供的多链路通信的系统架构示意图；
图2为本申请实施例提供的无线局域网的通信方法一实施例；
图3为本申请实施例提供的数据交互一示意图；
图4为本申请实施例提供的数据交互另一示意图；
图5为本申请实施例提供的无线局域网的通信方法另一实施例；
图6为本申请实施例提供的数据交互另一示意图；
图7为本申请实施例提供的无线局域网的通信方法另一实施例；
图8为本申请实施例提供的数据交互另一示意图；
图9为本申请实施例提供的通信设备的结构示意图；
图10为本申请实施例提供的通信设备的结构示意图；
图11为本申请实施例提供的计算机设备的结构示意图；
图12为本申请实施例提供的计算机设备的结构示意图。
具体实施方式
本申请实施例提供了一种无线局域网中的通信方法以及通信设备，用于减少低延时业务的时延。
下面结合附图，对本申请的实施例进行描述，显然，所描述的实施例仅仅是本申请一部分的实施例，而不是全部的实施例。本领域普通技术人员可知，随着技术的发展和新场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
本申请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。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的实施例能够以除了在这里图示或描述的内容以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
在这里专用的词“示例性”意为“用作例子、实施例或说明性”。这里作为“示例性”所说明的任何实施例不必解释为优于或好于其它实施例。
另外，为了更好的说明本申请，在下文的具体实施方式中给出了众多的具体细节。本领域技术人员应当理解，没有某些具体细节，本公开同样可以实施。在一些实例中，对于本领域技术人员熟知的方法、手段、元件和电路未作详细描述，以便于凸显本公开的主旨。
无线设备支持多链路通信，指该无线设备支持同时在多个频段上通信，或者同时在同一频段的不同信道上通信。支持多链路通信的无线设备通常称为多链路设备(multi-link device，MLD)。多链路设备包括多个站点(station，STA)。无线局域网(wireless local area networks，WLAN)中的多链路设备分为两类：接入点(access point，AP)多链路设备(即AP MLD)和非接入点(non-AP)多链路设备(即non-AP MLD)。接入点多链路设备中的STA为AP。非接入点多链路设备中的STA为non-AP STA。非接入点多链路设备与接入 点多链路设备之间可以建立一条或多条链路，每条链路连接非接入点多链路设备中的一个non-AP STA以及接入点多链路设备中的一个AP。一条链路两端的non-AP STA和AP之间具有关联关系。
以下，示例性介绍本申请的应用场景。如图1所示的多链路通信的系统架构。该系统架构包括至少一个第一多链路设备和至少一个第二多链路设备，其中，第一多链路设备为接入点多链路设备，该接入点多链路设备中包括多个AP，如图中所示的AP1、AP2、…、APn。第二多链路设备为非接入点多链路设备，该非接入点多链路设备包括多个non-AP STA，如图中所示的STA1、STA2、…、STAn。非接入点多链路设备与接入点多链路设备之间可以建立一条或多条链路，每条链路连接非接入点多链路设备中的一个non-AP STA以及接入点多链路设备中的一个AP。一条链路两端的non-AP STA和AP之间具有关联关系。
在802.11ax中，AP会进行重叠基本服务集(overlapping basic service set，OBSS)扫描操作，扫描特定集合的信道以发现邻居AP。以极高吞吐量(very high throughput，VHT)STA为例，协议要求的最小每信道扫描时长默认被动扫描为20时间单位(time units，TUs)或者主动扫描为10TUs。在一个OBSS扫描操作期间，默认每300秒，集合中的每个信道至少被扫描一次，默认的被扫描总时长至少为200TUs(被动扫描)或者20TUs(主动扫描)。
而在产品实现中，OBSS扫描时，每个信道的扫描时长一般设置为100TUs，即约为一个目标信标传输时间(target beacon transmission time，TBTT)，以保证在此期间大概率可以听到邻居AP的一个信标(Beacon)帧。
静默元素(Quiet Element)可以要求在一定时间区间内，当前信道不发生任何帧交互，进而保证进行信道测量时不会有来自本基本服务集(basic service set，BSS)其他STA的干扰。该Quiet Element的帧结构如表1所示。其中，元素标识(Element ID)字段表示元素的标识，长度(Length)表示元素的长度，静默计数(Quiet Count)字段表示下一个静默间隔(quiet interval)所在的信标间隔(beacon interval)与当前时间之间TBTT的个数；静默周期(Quiet Period)字段表示两个quiet interval之间beacon interval的个数；静默持续时间(Quiet Duration)字段表示quiet interval的持续时间；静默偏移量(Quiet Offset)字段表示quiet interval开始时间与Quiet Count中表示的TBTT之间的偏移。Quiet Element可以携带在Beacon帧和探针响应(Probe Response)帧中。
Figure PCTCN2021129302-appb-000001
表1
当AP MLD的一条链路进行OBSS扫描等操作时，当前链路会处于一段时间内不可使用的状态，该链路上的低时延业务需要等待OBSS扫描完成后才能进行有效的数据传输，低时延业务的时延和可靠性要求都无法得到保证。为了减少低延时业务的时延，本申请实施例提供了一种无线局域网中的通信方法，该方法包括：第一多链路设备通过包括第一链路在内的一条或多条链路向第二多链路设备发送指示，指示包括开始时间和标识，指示用于指示第二多链路设备在开始时间执行和第二链路相关的操作，其中，标识是第二链路的标识 或第二链路所在频段的标识。第二多链路设备根据指示在开始时间执行和第二链路相关的操作，其中，标识是第二链路的标识或第二链路所在频段的标识。这样，可以在达到该开始时间时为低延时业务选择合适的链路，避免影响低延时业务的执行。
下面基于上述应用场景，对本申请实施例提供的无线局域网中的通信方法进行描述。
本实施例中，第一多链路设备与第二多链路设备之间的数据交互受限于第二多链路设备的类型，第二多链路设备为非接入点设备，可以是单射频非接入点多链路设备，还可以是不具备同时在不同链路上分别接收和发送数据能力的非接入点多链路设备，下面分别进行描述。单射频非接入点多链路设备是指支持多链路协议的，但仅有一个可切换频段的射频电路的非接入点设备。
1、第二多链路设备为非接入点设备：
请参阅图2，本申请实施例提供的无线局域网中的通信方法一实施例包括：
201、第一多链路设备向第二多链路设备发送指示。
本实施例中，第一多链路设备向第二多链路设备发送第一帧，第一帧中包含上述指示。其中，第一多链路设备发送第一帧可以只通过第一链路发送，也可以通过包括第一链路在内的多条链路发送，具体此处不作限定。
该指示包括开始时间和标识，该指示可以指示第二多链路设备在到达该开始时间的时候执行和第二链路相关的操作，该相关操作可以是切换、激活或避开操作，并在切换或激活的链路上进行数据交互，该标识可以为指示第二链路的标识或第二链路所在频段的标识。
上述第一帧可以是Beacon帧、数据帧等其他所有可以携带推荐元素(Recommend Element)的广播、组播、单播帧。如果第一帧不是广播帧，则该流程还包括第一多链路设备在第二链路上收到第二多链路设备针对第一帧的确认字符(acknowledgement character，ACK)帧。该Recommend Element即为本实施例中的指示。
该Recommend Element中还可以包括原因码，示例性的，当第一链路上计划在开始时间进行OBSS扫描时，该原因码可以指示第二多链路设备在到达上述开始时间的时候避开上述标识指示的第二链路(此时第一链路和第二链路是同一条链路)，可选的，该原因码可以直接指示第二多链路设备唤醒或切换除第二链路之外的其他链路，也可以是通过指示第二链路上的AP负载过多，推荐第二多链路设备唤醒或切换除第二链路外的其他链路进行负载均衡。
该Recommend Element中还可以包括持续时间，该持续时间可以指示第二多链路设备在执行第二链路相关的操作时的时长。
该Recommend Element可以如下表2或表3所示。
Figure PCTCN2021129302-appb-000002
表2
其中，元素标识(Element ID)字段表示元素的标识。长度(Length)表示元素的长度。Target Time指示开始时间，具体可以是时间同步功能(timing synchronization function，TSF)计时器(timer)，部分(partial)TSF timer，或者可以是类似Quiet Element 中Count、Period和Offset字段的集合，如表3所示。示例性的,partial TSF timer用TSF[10:25]共16个比特，表示1-65535TUs，0表示立即开始。Duration表示持续时间，可以以TU为单位，或者可以是一个基于表格的值(示例性的,数值0-15分别对应不同的时间)，同时也可以取一些特殊值，如0表示持续时间无限长。频段或链路(Band/Link)标识(identification，ID)：可以表示特定的频段，如2.4G、5G、6G，也可以表示802.11be中新定义的Link ID，具体可以表现为(操作类(Operational Class)，信道(Channel)，基本服务集标识(Basic Service Set ID，BSSID))三元组。Reason表示原因码，其具体含义可以包含OBSS扫描(Scanning),Channel切换(Switch)。
Figure PCTCN2021129302-appb-000003
表3
202、第二多链路设备根据指示在开始时间执行和第二链路相关的操作。
本实施例中，第二多链路设备在接收到来自第一多链路设备的第一帧时，可以获得该第一帧中的指示，并根据该指示在上述开始时间执行和该指示中的标识对应的第二链路相关的操作。
在一个示例中，指示中的原因码指示第二多链路设备在该开始时间使用该第二链路，第二多链路设备可以激活或者切换到该第二链路，并通过该第二链路与第一多链路设备进行数据交流，可选的，交流的数据可以是低延时业务的数据，也可以是在其他链路上运行的其他业务。
在另一个示例中，指示中的原因码可以指示第二多链路设备在该开始时间选择除上述第二链路之外的链路，第二多链路设备可以激活或切换到选择的链路进行数据交互。
可选的，该原因码中还可以包括其他字段，例如：负载均衡(Load Balance)，唤醒指定链路(Wake the Corresponding Link Only)，已被占用(Occupied already)，链路推荐(Link Recommendation)等。其中，负载均衡可以指示第二链路上的AP负载过高，需要均衡负载；唤醒指定链路可以指示第二多链路设备唤醒第二链路，不需要第二多链路设备在该第二链路时刻监听beacon帧；已被占用可以指示标识对应的第二链路不可用，第二多链路设备可以选择唤醒或者切换其他链路；链路推荐可以是推荐第二多链路设备使用该标识对应的第二链路，可选的，第二多链路设备可以自己确定是否使用该第二链路。
在一个示例中，在上述开始时间时，第二多链路设备还可以只在指示中的持续时间内使用或避开该第二链路。
在第一多链路设备执行第一操作的开始时间和持续时间内，第一多链路设备可以是在第二链路执行第一操作导致第二链路无法使用，第二多链路设备可以唤醒其他链路执行第二链路上的低延时业务，该第一操作可以是OBSS扫描、信道切换或者其他持续一定时间，会导致第二链路无法使用的操作。如图3所示的数据交互一示意图，其中，AP1与STA1相连，AP2与STA2相连，第一多链路设备通过AP1向第二多链路设备发送Beacon帧，该Beacon帧中的Recommend Element指示第二多链路设备知道第一多链路设备计划在上述开始时间和持续时间内执行OBSS扫描，则间接指示第二多链路设备可以在该开始时间和持续时间内 避开标识对应的AP1所在的链路选择其他链路(例如AP2所在的休眠链路)进行唤醒，以跟第一多链路设备进行低延时业务的数据交互，此时第一链路和第二链路为同一条链路。
在第一多链路设备不进行第一操作的时候，第一多链路设备也可以向第二多链路设备发送上述指示，以进行负载均衡等。如图4所示的数据交互另一示意图，AP1与STA1相连，AP2与STA2相连，第一多链路设备通过AP1向第二多链路设备发送Beacon帧，该Beacon帧中的Recommend Element直接推荐第二多链路设备在上述开始时间和持续时间内唤醒并使用除标识对应的AP1所在链路的其他链路。
第二链路和第一链路可以相同。第二链路也可以是第一链路之外的链路。
本实施例中，第一多链路设备通过向第二多链路设备发送的指示，使得第二多链路设备在指示中的开始时间执行与指示中的标识对应的第二链路相关的操作，以使得第二多链路设备避开或者使用第二链路与第一多链路设备进行低延时业务的数据交互，可以及时进行低延时业务的数据交互，减少低延时业务的时延。
2、第二多链路设备是单射频非接入点多链路设备：
请参阅图5，本申请实施例提供的无线局域网中的通信方法另一实施例包括：
501、第一多链路设备向第二多链路设备发送指示。
本实施例步骤501可以参照图2所示的无线局域网中的通信方法中步骤201的相关描述，此处不再赘述。
502、如果原因码指示第二多链路设备避开第二链路，且第二多链路设备为单射频非接入点多链路设备，则第二多链路设备在开始时间改变射频电路的工作频段。
本实施例中，第二多链路设备为单射频非接入点多链路设备，即第二多链路设备与第一多链路设备之间只能通过一个频段进行数据交互，此时指示中的标识对应的第二链路为上述第一链路，原因码指示第二多链路设备切换频段，第二多链路设备在上述开始时间改变射频电路的工作频段，即在第二链路所在的频段不可用的时候将数据交互的频段切换到另一个频段。
在一个示例中，在上述开始时间时，第二多链路设备还可以只在指示中的持续时间内使用该第二链路。
在第一多链路设备执行第一操作的开始时间和持续时间内，第一多链路设备可以是在第二链路执行第一操作导致第二链路无法使用，该第一操作可以是OBSS扫描或者其他持续一定时间，会导致第二链路无法使用的操作。如图6所示的数据交互另一示意图，AP1与STA1相连，AP2与STA2之间的链路用虚线表示(第二多链路设备是单射频非接入点多链路设备，该链路可能是在关联阶段建立的虚拟链路，也有可能是尚未建立的潜在链路)，第一多链路设备通过AP1向第二多链路设备发送Beacon帧，该Beacon帧中的Recommend Element指示第二多链路设备知道第一多链路设备计划在上述开始时间和持续时间内执行OBSS扫描，标识指示AP1对应的频段，第二多链路设备可以在该开始时间和持续时间内将频段切换到AP1所在的频段之外的频段上，如图6中所示的AP2所在的频段上。
在不进行第一操作的时候，第一多链路设备也可以向第二多链路设备发送上述指示，例如唤醒指定链路，此时该指示中的标识对应的第二链路为推荐使用的链路。
本实施例中，第一多链路设备通过向第二多链路设备发送的指示，使得第二多链路设备指示中的开始时间执行与指示中的标识对应的第二链路相关的操作，以使得第二多链路设备使用或避开第二链路与第一多链路设备进行低延时业务的数据交互，可以提高低延时业务的可靠性。
3、第二多链路设备是不具备同时在不同链路上分别接收和发送数据能力的非接入点多链路设备：
本实施例中，第一多链路设备向第二多链路设备发送指示可以是通过所有在使用的链路发送，可以减少不具备同时在不同链路上分别接收和发送数据能力的非接入点多链路设备接收不到该指示的可能性。
请参阅图7，本申请实施例提供的无线局域网中的通信方法另一实施例包括：
701、第一多链路设备通过包括第一链路在内的多条链路向第二多链路设备发送指示。
本实施例中，第一多链路设备可以通过与第二多链路设备之间相连的多条已激活的链路向该第二多链路设备发送该指示，具体的指示可以参照图2所示的无线局域网中的通信方法中步骤201的相关描述，此处不再赘述。
702、第二多链路设备根据指示在开始时间执行和第二链路相关的操作。
第二多链路设备为不具备同时在不同链路上分别接收和发送数据能力的非接入点多链路设备，即当第一多链路设备在包括第一链路在内的多条链路向第二多链路设备发送指示时，第二多链路设备可能只在其中一条链路上接收到该指示。如图8所示的数据交互另一示意图，AP1与STA1相连，AP2与STA2相连，第一多链路设备通过AP1和AP2向第二多链路设备发送Beacon帧，该Beacon帧中的Recommend Element指示第二多链路设备知道第一多链路设备计划在上述开始时间和持续时间内执行OBSS扫描。在AP1发送Beacon帧时，STA2正在发送上行数据，因为自身能力的限制，第二多链路设备无法接收到AP1发送的Beacon帧。AP2发送Beacon帧时，AP1也在发送下行数据，此时STA2可以成功接收AP2发送的Beacon帧。该Recommend Element间接指示第二多链路设备可以在该开始时间和持续时间内避开标识对应的第二链路，本实施例中第二链路为AP1所在的链路，本实施例中，第二多链路设备在AP1进行OBSS扫描时唤醒了STA2所在链路进行数据传输。在不进行第一操作的时候，第一多链路设备也可以向第二多链路设备发送上述指示，例如唤醒指定链路，此时该指示中的标识对应的第二链路为推荐使用的链路。
本实施例具体的执行和第二链路相关的操作可以参照图2所示的无线局域网中的通信方法中步骤202的相关描述，此处不再赘述。
本实施例中，第一多链路设备通过向第二多链路设备发送的指示，使得第二多链路设备指示中的开始时间执行与指示中的标识对应的第二链路相关的操作，以使得第二多链路设备使用或避开第二链路与第一多链路设备进行低延时业务的数据交互，可以及时进行低延时业务的数据交互，减少低延时业务的时延。
以上描述了无线局域网中的通信方法，下面结合附图介绍本申请实施例的通信设备。
图9为本申请实施例中通信设备90的一实施例示意图。
如图9所示，本申请实施例提供了通信设备，该通信设备包括：
发送单元901，用于通过包括第一链路在内的一条或多条链路向第二多链路设备发送指示，指示包括开始时间和标识，指示用于指示第二多链路设备在开始时间执行和第二链路相关的操作，其中，标识是第二链路的标识或第二链路所在频段的标识。
可选的，指示还包括原因码，原因码指示第二多链路设备根据原因码在开始时间使用第二链路或者避开第二链路。
可选的，指示还包括持续时间，持续时间指示第二多链路设备对第二链路相关的操作持续执行的时长。
本实施例中，通信设备可以执行前述图2、图5和图7所示实施例中第一多链路设备所执行的操作，具体此处不再赘述。
图10为本申请实施例中通信设备100的一实施例示意图。
如图10所示，本申请实施例提供了通信设备，该通信设备包括：
接收单元1001，用于通过包括第一链路在内的一条或多条链路接收来自第一多链路设备的指示，指示包括开始时间和标识；处理单元1002，用于根据指示在开始时间执行和第二链路相关的操作，其中，标识是第二链路的标识或第二链路所在频段的标识。
可选的，指示还包括原因码，原因码指示根据原因码在开始时间使用第二链路或者避开第二链路。
可选的，处理单元1002具体用于：如果原因码指示避开第二链路，且通信设备为单射频非接入点多链路设备，则在开始时间改变射频电路的工作频段。
可选的，指示还包括持续时间，持续时间指示对第二链路相关的操作持续执行的时长。
本实施例中，通信设备可以执行前述图2、图5和图7所示实施例中第二多链路设备所执行的操作，具体此处不再赘述。
图11所示，为本申请的实施例提供的计算机设备110的一种可能的逻辑结构示意图。计算机设备110包括：处理器1101、通信接口1102、存储系统1103以及总线1104。处理器1101、通信接口1102以及存储系统1103通过总线1104相互连接。在本申请的实施例中，处理器1101用于对计算机设备110的动作进行控制管理，例如，处理器1101用于执行图3至图4的方法实施例中存储管理装置所执行的步骤。通信接口1102用于支持计算机设备110进行通信。存储系统1103，用于存储计算机设备110的程序代码和数据。
其中，处理器1101可以是中央处理器单元，通用处理器，数字信号处理器，专用集成电路，现场可编程门阵列或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。处理器1101也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，数字信号处理器和微处理器的组合等等。总线1104可以是外设部件互连标准(Peripheral Component Interconnect，PCI)总线或扩展工业标准结构(Extended Industry Standard Architecture，EISA)总线等。总线可以分为地址总线、数据总线、控制总线等。为便于表示，图11中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
通信设备90中的发送单元901相当于计算机设备110中的通信接口1102。
本实施例的计算机设备110可对应于上述各个方法实施例中的第一多链路设备，该计 算机设备110中的通信接口1102可以实现上述各个方法实施例中的第一多链路设备所具有的功能和/或所实施的各种步骤，为了简洁，在此不再赘述。
图12所示，为本申请的实施例提供的计算机设备120的一种可能的逻辑结构示意图。计算机设备120包括：处理器1201、通信接口1202、存储系统1203以及总线1204。处理器1201、通信接口1202以及存储系统1203通过总线1204相互连接。在本申请的实施例中，处理器1201用于对计算机设备120的动作进行控制管理，例如，处理器1201用于执行图3至图4的方法实施例中处理装置所执行的步骤。通信接口1202用于支持计算机设备120进行通信。存储系统1203，用于存储计算机设备120的程序代码和数据。
其中，处理器1201可以是中央处理器单元，通用处理器，数字信号处理器，专用集成电路，现场可编程门阵列或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。处理器1201也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，数字信号处理器和微处理器的组合等等。总线1204可以是外设部件互连标准(Peripheral Component Interconnect，PCI)总线或扩展工业标准结构(Extended Industry Standard Architecture，EISA)总线等。总线可以分为地址总线、数据总线、控制总线等。为便于表示，图12中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
通信设备100中的接收单元1001相当于计算机设备120中的通信接口1202，通信设备100中的处理单元1002可以相当于处理器1201。
本实施例的计算机设备120可对应于上述各个方法实施例中的第二多链路设备，该计算机设备120中的处理器1201和通信接口1202可以实现上述各个方法实施例中的第二多链路设备所具有的功能和/或所实施的各种步骤，为了简洁，在此不再赘述。
在本申请的另一实施例中，还提供一种计算机可读存储介质，计算机可读存储介质中存储有计算机执行指令，当设备的处理器执行该计算机执行指令时，设备执行上述图2、图5和图7中第一多链路设备所执行的无线局域网中的通信方法的步骤。
在本申请的另一实施例中，还提供一种计算机可读存储介质，计算机可读存储介质中存储有计算机执行指令，当设备的处理器执行该计算机执行指令时，设备执行上述图2、图5和图7中第二多链路设备所执行的无线局域网中的通信方法的步骤。
在本申请的另一实施例中，还提供一种计算机程序产品，该计算机程序产品包括计算机执行指令，该计算机执行指令存储在计算机可读存储介质中；当设备的处理器执行该计算机执行指令时，设备执行上述图2、图5和图7中第一多链路设备所执行的无线局域网中的通信方法的步骤。
在本申请的另一实施例中，还提供一种计算机程序产品，该计算机程序产品包括计算机执行指令，该计算机执行指令存储在计算机可读存储介质中；当设备的处理器执行该计算机执行指令时，设备执行上述图2、图5和图7中第二多链路设备所执行的无线局域网中的通信方法的步骤。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以 硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请实施例的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，read-only memory)、随机存取存储器(RAM，random access memory)、磁碟或者光盘等各种可以存储程序代码的介质。

Claims (17)

  1. 一种无线局域网中的通信方法，其特征在于，所述方法包括：
    第一多链路设备通过包括第一链路在内的一条或多条链路向第二多链路设备发送指示，所述指示包括开始时间和标识，所述指示用于指示所述第二多链路设备在所述开始时间执行和第二链路相关的操作，其中，所述标识是所述第二链路的标识或所述第二链路所在频段的标识。
  2. 根据权利要求1所述的无线局域网中的通信方法，其特征在于，所述指示还包括原因码，所述原因码指示所述第二多链路设备根据所述原因码在所述开始时间使用所述第二链路或者避开所述第二链路。
  3. 根据权利要求1或2所述的无线局域网中的通信方法，其特征在于，所述指示还包括持续时间，所述持续时间指示所述第二多链路设备对所述第二链路相关的操作持续执行的时长。
  4. 一种无线局域网中的通信方法，其特征在于，所述方法应用于与第一多链路设备通信的第二多链路设备，所述方法包括：
    所述第二多链路设备通过包括第一链路在内的一条或多条链路接收来自所述第一多链路设备的指示，所述指示包括开始时间和标识；
    所述第二多链路设备根据所述指示在所述开始时间执行和第二链路相关的操作，其中，所述标识是所述第二链路的标识或所述第二链路所在频段的标识。
  5. 根据权利要求4所述的无线局域网中的通信方法，其特征在于，所述指示还包括原因码，所述原因码指示根据所述原因码在所述开始时间使用所述第二链路或者避开所述第二链路。
  6. 根据权利要求5所述的无线局域网中的通信方法，其特征在于，所述第二多链路设备根据所述指示在所述开始时间执行和第二链路相关的操作包括：
    如果所述原因码指示所述第二多链路设备避开所述第二链路，且所述第二多链路设备为单射频非接入点多链路设备，则所述第二多链路设备在所述开始时间改变射频电路的工作频段。
  7. 根据权利要求4-6任一项所述的无线局域网中的通信方法，其特征在于，所述指示还包括持续时间，所述持续时间指示对所述第二链路相关的操作持续执行的时长。
  8. 一种通信设备，其特征在于，包括：
    发送单元，用于通过包括第一链路在内的一条或多条链路向第二多链路设备发送指示，所述指示包括开始时间和标识，所述指示用于指示所述第二多链路设备在所述开始时间执行和第二链路相关的操作，其中，所述标识是所述第二链路的标识或所述第二链路所在频段的标识。
  9. 根据权利要求8所述的通信设备，其特征在于，所述指示还包括原因码，所述原因码指示所述第二多链路设备根据所述原因码在所述开始时间使用所述第二链路或者避开所述第二链路。
  10. 根据权利要求8或9所述的通信设备，其特征在于，所述指示还包括持续时间，所 述持续时间指示所述第二多链路设备对所述第二链路相关的操作持续执行的时长。
  11. 一种通信设备，其特征在于，包括：
    接收单元，用于通过包括第一链路在内的一条或多条链路接收来自所述第一多链路设备的指示，所述指示包括开始时间和标识；
    处理单元，用于根据所述指示在所述开始时间执行和第二链路相关的操作，其中，所述标识是所述第二链路的标识或所述第二链路所在频段的标识。
  12. 根据权利要求11所述的通信设备，其特征在于，所述指示还包括原因码，所述原因码指示根据所述原因码在所述开始时间使用所述第二链路或者避开所述第二链路。
  13. 根据权利要求12所述的通信设备，其特征在于，所述处理单元具体用于：
    如果所述原因码指示避开所述第二链路，且所述通信设备为单射频非接入点多链路设备，则在所述开始时间改变射频电路的工作频段。
  14. 根据权利要求11-13任一项所述的通信设备，其特征在于，所述指示还包括持续时间，所述持续时间指示对所述第二链路相关的操作持续执行的时长。
  15. 一种计算机设备，其特征在于，包括：处理器以及存储器，
    所述处理器用于执行所述存储器中存储的指令，使得所述计算机设备执行权利要求1至7中任一项所述的方法。
  16. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有计算机程序，当所述计算机程序在所述计算机上运行时，使得所述计算机执行如权利要求1至7中任一项所述的方法。
  17. 一种计算机程序产品，其特征在于，当所述计算机程序产品在计算机上执行时，所述计算机执行如权利要求1至7中任一项所述的方法。
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