WO2022267541A1 - 一种控制设备发送消息的方法、装置及系统 - Google Patents

一种控制设备发送消息的方法、装置及系统 Download PDF

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Publication number
WO2022267541A1
WO2022267541A1 PCT/CN2022/079395 CN2022079395W WO2022267541A1 WO 2022267541 A1 WO2022267541 A1 WO 2022267541A1 CN 2022079395 W CN2022079395 W CN 2022079395W WO 2022267541 A1 WO2022267541 A1 WO 2022267541A1
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WO
WIPO (PCT)
Prior art keywords
access
service device
access service
message
client
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Application number
PCT/CN2022/079395
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English (en)
French (fr)
Inventor
赵忠亮
陈涛涛
Original Assignee
华为技术有限公司
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Publication of WO2022267541A1 publication Critical patent/WO2022267541A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/185—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with management of multicast group membership
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present application relates to the technical field of terminals, and in particular to a method, device and system for controlling a device to send a message.
  • the wireless-fidelity (Wireless-Fidelity, Wi-Fi) technology uses shared channel resources, which leads to serious problems of signal interference and collision.
  • IEEE Institute of Electrical and Electronics Engineers 802.11X standard adopts the carrier sense multiple access with collision avoidance (CSMA/CA) competition mechanism, allowing the access point (access point, AP) and stations (stations, STAs) compete fairly for air interface resources, and use physical and virtual carrier sense technology to effectively reduce transmission conflicts between APs and STAs.
  • CSMA/CA carrier sense multiple access with collision avoidance
  • AP access point
  • stations stations
  • physical and virtual carrier sense technology to effectively reduce transmission conflicts between APs and STAs.
  • EDCA Enhanced distributed channel access
  • 1A which is a schematic diagram of a curve between the number of STAs and throughput (throughput), when 50 STAs work concurrently, the throughput will decrease by more than 30%.
  • APs and STAs compete for air interface resources at the same time, high-priority packets may not be sent in time, resulting in increased delay or even packet loss.
  • an AP can allocate a message sending time range and a message receiving time range for each STA connected to the AP. , the AP and STA no longer compete fairly for air interface resources.
  • a mechanism also has a problem: for a STA not connected to an AP, the AP cannot allocate a packet sending time range for the STA, and has no way of knowing the specific access time of the STA. If the STA actively reports a probe request message to the AP, it will have an impact on the centralized control mechanism of the AP. If the time range or the packet receiving time range overlaps, the Probe Request message sent by the STA will seriously interfere with the communication between the AP and other STAs.
  • the embodiment of the present application provides a method, device and system for controlling a device to send a message.
  • the access service device before the access client accesses the access service device, the access service device triggers the access client to determine Sending the first uplink message within the time range of the initial sending, can effectively avoid the interference caused by the access client to the communication between the access service device and other access clients.
  • the embodiment of this application provides a method for controlling a device to send a message, which is applied to the first access service device.
  • the solution includes: before the access client accesses the first access service device, the first access The service device triggers the access client to send the first uplink message to the first access service device through the first working frequency band within the initial time range.
  • the first uplink message is the first message sent by the access client to the first access service device for accessing the first access service device.
  • the first working frequency band is a frequency range of Wi-Fi signals used for communication between the first access service device and the access client.
  • the initial time range is the time range during which the access client sends the first uplink message to the first access service device for accessing the first access service device.
  • An embodiment of the present application provides a method for controlling a device to send a message.
  • the first access service device triggers the access
  • the first time range allowed by the device is to send the first uplink message to the first access service device through the first working frequency band, which prevents the access client from actively sending the first uplink message to the first access service device before accessing the first access service device.
  • the uplink message occurs, thereby avoiding the first uplink message sent by the access client from interfering with the communication between the first access service device and other access clients.
  • the access client accesses the first access service device, although the access client can communicate with the first access service device on the first working frequency band, it means that the access client can communicate with the first access service device.
  • the first access service device exchanges messages on the first working frequency band, but since the access client does not access the first access service device, the access client cannot access the network through the first access service device at this time .
  • the first access service device adopts centralized control in the first working frequency band, which can effectively improve throughput and delay.
  • the The method further includes: the first access service device determines that the access client will access the first access service device through a Wi-Fi signal.
  • the The method before the first access service device triggers the access client to send the first uplink message to the first access service device through the first working frequency band within the initial time range, the The method also includes: the first access service device allocates the first working frequency band and the first time range for the access client. In this way, the first access service device can try to allocate a time range for avoiding interference to the access client according to its own situation. Centralized control of the first access service device can be realized by assigning the initial launch time range to the access client by the first access service device.
  • the initial time range does not overlap with the packet receiving time and packet sending time allocated by the first access service device for other access clients. Since the time ranges do not overlap, conflicts are avoided.
  • the access client before the first access service device triggers the access client to send the first uplink message to the first access service device through the first working frequency within the initial time range, the access client has To access the second access service device, the first access service device determines that the access client will access the first access service device through a Wi-Fi signal, including: the first access service device receives the Fifth message for the device. The first access service device determines, according to the fifth message, that the access client will access the first access service device through the Wi-Fi signal.
  • the first communication connection communicates with the first access service device.
  • the first communication connection is a communication connection established between the access client and the first access service device through a communication method other than wireless fidelity signals.
  • the first access service device Determining that the access client will access the first access service device through a Wi-Fi signal includes: the first access service device receives a fifth message from the access client over the first communication connection. The first access service device determines according to the fifth message that the access client will access the first access service device through the Wi-Fi signal.
  • the fifth message includes information about the access client and second indication information.
  • the second indication information is used to indicate that the access client will access the first access service device through the Wi-Fi signal. This facilitates the first access service device to determine, according to the second indication information, that the access client will access the first access service device through a Wi-Fi signal, and determine that the access client will access the second access device through a Wi-Fi signal according to the information of the access client. Which is the access client of the access service device.
  • the fifth message includes one or more of the following information: a working frequency band supported by the access client itself and an expected time range.
  • the first access service device may refer to the expected time range when determining the first time range for the access client.
  • the first time range includes the desired time range.
  • the first time range is jointly determined by the expected time range and the packet receiving time range and/or packet sending time range allocated by the first access service device to other access clients.
  • the first access service device when determining the first working frequency band for the access client, the first access service device may refer to the working frequency band supported by the access client itself.
  • the first working frequency band allocated by the first access service device to the access client belongs to the working frequency band supported by the access client itself.
  • the access client has already connected to the second access service device, and the first access service device triggers the access client to access the first Before the service device sends the uplink message for the first time, the method provided by the embodiment of the present application further includes: the first access service device sends to the second access service device a signal for instructing the access client to enter the waiting state after switching to the first working frequency band; first news.
  • the first access service device triggers the access client to send the first uplink message to the first access service device through the first working frequency band within the initial time range, including: within the initial time range, the first access service device passes the first working frequency
  • the frequency band sends to the access client a second message for instructing the access client to immediately send the first uplink message to the first access service device.
  • the first access service device triggers the access client to send the first uplink message to the first access service device through the first working frequency band within the first time range, including: before the first time range arrives, the first access service device passes The first working frequency band sends the third message to the access client.
  • the third message is used to instruct the access client to send the first uplink message to the first access service device through the first working frequency band within the first time range.
  • the third message includes the information of the first time range.
  • the first message includes information about the first working frequency band and first indication information, and the first indication information indicates that the access client enters a waiting state after switching to the first working frequency band.
  • the first working frequency band and the first launch time range are allocated for the access client by the first access service device.
  • the first working frequency band and the first launch time range are determined through negotiation between the first access service device and the access client.
  • the method provided in the embodiment of the present application further includes: the first access service device determines that the access client switches to the first working frequency band. This can prevent the first access service device from blindly sending the second message/third message on the first working frequency band without knowing whether the access client has switched to the first working frequency band, causing the access client to fail to receive occur.
  • the first access service device sends the second message/third message after determining that the access client switches to the first working frequency band, which can increase the probability that the access client successfully receives the second message/third message.
  • the first access service device determining that the access client switches to the first working frequency band includes: the first access service device receiving a notification message from the second access service device.
  • the notification message is used to indicate that the access client has switched to the first working frequency band.
  • the first access service device determines that the access client switches to the working frequency band according to the notification message.
  • the access client has already connected to the second access service device, and the first access service device triggers the access client to access the first
  • the service device sending the first uplink message includes: the first access service device sends a fourth message to the second access service device.
  • the fourth message is used to instruct the access client to switch to the first working frequency band, and to send the first uplink message to the first access service device through the first working frequency band within the first time range.
  • the fourth message includes information about the first working frequency band and information about the time range of the first broadcast.
  • the fourth message further includes first indication information, and the first indication information indicates that the access client enters a waiting state after switching to the first working frequency band.
  • the access client can specify that it needs to enter a waiting state after switching to the first working frequency band, that is, it does not actively send an uplink message to the first access service device.
  • the method provided by the embodiment of the present application further includes: the first access service device sends to the access point client a waiting timeout message indicating the upper limit of time for the access client to enter the waiting state time information. It is convenient for the access client to know that it is no longer in the waiting state after the time limit is exceeded, and can try to access other access service devices.
  • the time information of waiting for timeout may be sent by the first access service device to the access client on the first working frequency band after the access client switches to the first working frequency band, or the time information of waiting for timeout may be Before the access client switches to the first working frequency band, the first access service device sends to the access client through the second access service device or the first communication connection.
  • the method provided by the embodiment of the present application further includes: the first access service device receives the first uplink message from the access client through the first working frequency band within the first time range.
  • the first uplink message is used to request access to the first access service device through the Wi-Fi signal.
  • the first access service device executes a process for the access client to access the first access service device according to the first uplink message.
  • the method provided by the embodiment of the present application further includes: the first access service device sends to the access client a message for instructing the access client to connect to the first access client on the first working frequency band.
  • the third indication information of the type of the first uplink message sent by the serving device By providing the third indication information, the access client can subsequently send the first uplink message to the first access service device according to the type indicated by the third indication information within the first time range.
  • the third indication information may be carried as a field in the fourth message, or in the second message or the third message.
  • the third indication information may be carried in a message other than the second message, the third message or the fourth message, and sent to the access client, which is not limited in this embodiment of the present application.
  • the first uplink message includes one or more of the following: a probe request message, a verification request message, and an association request message.
  • the method before the first access service device triggers the access client to send the first uplink message to the first access service device through the first working frequency band within the initial time range, the method further includes: The first access service device sends a first message to the access client through the first communication connection, the first message is used to instruct the access client to enter a waiting state after switching to the first working frequency band, the The first message includes the information of the first working frequency band; the first access service device triggers the access client to report to the first access service device through the first working frequency band within the first launch time range
  • Sending the first uplink message includes: within the first time range, the first access service device sends a second message to the access client through the first working frequency band, and the second message uses Instructing the access client to immediately send the first uplink message to the first access service device, or, before the first time range arrives, the first access service device passes the first working The frequency band sends a third message to the access client, where the third message is used to instruct the access client to send a message to the first
  • the first access service device triggers the access client to send the first uplink message to the first access service device through the first working frequency band within the initial time range, including: the first access service The device sends a fourth message to the access client through the first communication connection, where the fourth message is used to instruct the access client to switch to the first working frequency band and pass the first
  • the working frequency band sends the first uplink message to the first access service device, and the fourth message includes information of the first working frequency band and information of the initial time range.
  • the method provided in the embodiment of the present application further includes: Next, the first access service device determines to allow the access client to access the first access service device, and the preset condition includes one or more of the following information: the number of terminals accessing the second access service device is greater than or equal to The preset number threshold, the business load of the second access service device is greater than or equal to the preset load threshold, the access client is located within the coverage of the first access service device, and the access client and the first access service device The distance between them is smaller than the distance between the access client and the second access service device, and the access client needs to be assigned time information for sending and/or receiving messages.
  • the access client supports multi-frequency multi-channel mode MBMC or multi-frequency single-channel mode MBSC.
  • the method provided in the embodiment of the present application further includes: In the case where the access client is not allowed to access the first access service device, the method provided in the embodiment of the present application further includes: the first access service device sends a trigger message to the second access service device or passes the access client The first communication connection with the first access service device sends a trigger message to the access client. Wherein, the trigger message is used to indicate that the access client is not allowed to access the first access service device.
  • the trigger message carries an access denial indication, where the access denial indication is used to indicate that the access client is not allowed to access the first access service device.
  • the first access service device and the second access service device work in different frequency bands, and interact and control through the same access controller AC; or, the first The access service device and the second access service device may be a hardware entity supporting MBMC, and the first access service device and the second access service device are respectively responsible for accessing different frequency bands.
  • the first access service device does not broadcast the SSID of the first access service device
  • the second access service device broadcasts the SSID of the second access service device.
  • the first access service device does not broadcast the SSID of the first access service device, so that the access client will not know the SSID of the first access service device, which can prevent the access client from actively trying to access The first access service device.
  • the embodiment of this application provides a method for controlling a device to send a message, which is applied to an access client.
  • the method includes: before the access client accesses the first access service device, based on the first access service
  • the triggering of the device sends the first uplink message to the first access service device through the first working frequency band within the first time range, where the first working frequency band is used for communication between the access client and the first interface
  • the frequency range of the wireless fidelity signal for communication between incoming service devices and the first uplink message is sent by the access client to the first access service device for accessing the first access service device
  • the method provided by the embodiment of the present application further includes: the access client receives the message from the The seventh message of the second access service device, the seventh message is used to instruct the access client to enter the waiting state after switching to the first working frequency band, and the seventh message includes the first working frequency band Frequency band information; in response to the seventh message, the access client switches to the first working frequency band and enters a waiting state.
  • the method provided in the embodiment of the present application further includes: Within the first time range, the access client receives a second message from the first access service device in the first working frequency band, the second message is used to instruct the access client to Immediately sending the first uplink message to the first access service device, or the access client receives a third message from the first access service device in the first working frequency band, and the first The third message is used to instruct the access client to send the first uplink message to the first access service device through the first working frequency within the first time range, and the third message includes the first time range of information.
  • the seventh message further includes first indication information, where the first indication information instructs the access client to enter a waiting state after switching to the first working frequency band.
  • the embodiment of the present application further includes: the access client sends the first uplink message from the second interface Obtain a seventh message from the ingress service device, the seventh message is used to instruct the access client to switch to the first working frequency band, and send the message to the The first access service device sends the first uplink message; the seventh message includes the information of the first working frequency band and the information of the initial time range.
  • the seventh message further includes first indication information, where the first indication information instructs the access client to enter a waiting state after switching to the first working frequency band.
  • the method provided in the embodiment of the present application further includes: the access client receives the time information of waiting for sending timeout from the first access service device, and the time information of waiting for timeout The upper limit of time for instructing the access client to enter the waiting state.
  • the method provided in the embodiment of the present application further includes: the access client acquires third indication information, where the third indication information is used to indicate that the first access service device wishes the The type of the first uplink message sent by the access client to the first access service device on the first working frequency band.
  • the access client sends the first uplink message to the first access service device through the first working frequency band based on the trigger of the first access service device within the first time range, including: within the first time range, the access client The terminal sends the first uplink message to the first access service device through the first working frequency band according to the third indication information.
  • the access client before the access client is triggered based on the first access service device, the access client has already accessed the second access service device, and the access client is based on the first access service device.
  • the method provided by the embodiment of the present application further includes: the access client sending the first uplink message to the first access service device The second access service device sends a fifth message, where the fifth message is used to indicate that the access client requests to access the first access service device through a Wi-Fi signal.
  • the fifth message sent by the access client to the second access service device further includes: the access client sends an association identifier to the second access service device, so The association identifier is used to indicate that the access client has accessed the second access service device.
  • the access client communicates with the first access service device through a first communication connection
  • the first communication connection is that the access client communicates with the Wi-Fi signal connection established with the first access service device in an external manner
  • the access client sends the Before the first uplink message
  • the method provided by the embodiment of the present application further includes: the access client sends a fifth message to the first access service device on the first communication connection, and the fifth message is used for Indicates that the access client will access the first access service device through a Wi-Fi signal.
  • the fifth message includes one or more of the following information: the second indication information, the working frequency band supported by the access client itself, the expected time range, the second The indication information is used to indicate that the access client will access the first access service device through a Wi-Fi signal.
  • the present application before the access client sends the first uplink message to the first access service device through the first working frequency band based on the trigger of the first access service device within the initial time range, the present application The method provided by the embodiment further includes: the access client receives a first message from the first access service device through the first communication connection, and the first message is used to instruct the access client to switch to the first After working in the frequency band, enter the waiting state, the first message includes the information of the first working frequency band; in response to the first message, the access client switches to the first working frequency band and enters the waiting state.
  • the access client receives a second message from the first access service device through the first working frequency band, where the second message is used to instruct the access client to immediately send the first
  • the access client sends the first uplink message to the first access service device through the first working frequency band within the initial time range, including: responding to the second message,
  • the access client immediately sends the first uplink message to the first access service device on the first working frequency band.
  • the present application before the access client sends the first uplink message to the first access service device through the first working frequency band based on the trigger of the first access service device within the initial time range, the present application The method provided by the embodiment further includes: the access client receives a first message from the first access service device through the first communication connection, and the first message is used to instruct the access client to switch to the first After working in the frequency band, enter the waiting state, the first message includes the information of the first working frequency band; in response to the first message, the access client switches to the first working frequency band and enters the waiting state.
  • the access client receives a third message from the first access service device through the first working frequency band, the third message includes the information of the launch time range, and the third message is used to indicate that the access client
  • the terminal sends the first uplink message to the first access service device through the first working frequency band within the first time range, and correspondingly, the access client sends the first uplink message within the first time range based on the trigger of the first access service device.
  • Sending the first uplink message to the first access service device through the first working frequency band includes: in response to the third message, the access client sends the first uplink message to the first access service device through the first working frequency band within the first sending time range The above-mentioned first uplink message.
  • the present application before the access client sends the first uplink message to the first access service device through the first working frequency band based on the trigger of the first access service device within the initial time range, the present application
  • the method provided in the embodiment includes: the access client receives a fourth message from the first access service device through the first communication connection, the fourth message is used to instruct the access client to switch to the first working frequency band, and send the first uplink message to the first access service device through the first working frequency band within the first time range, and the fourth message includes the information of the first working frequency band and the first time range of information.
  • the access client sends the first uplink message to the first access service device through the first working frequency band within the initial time range, including: in response to the fourth message, the access client The terminal sends the first uplink message to the first access service device through the first working frequency band within the first time range.
  • the access client after the access client switches to the first working frequency band, it enters a waiting state before the first time range arrives.
  • the first working frequency band and the first launch time range are allocated for the access client by the first access service device.
  • the first working frequency band and the first launch time range are determined through negotiation between the first access service device and the access client.
  • the access client before the fifth message sent by the access client to the second access service device, it may further include: the access client obtains the association identifier from the second access service device.
  • the access client may acquire the association identifier from the second access service device during the process of accessing the second access service device.
  • the embodiment of the present application provides a method for controlling a device to send a message, the method is applied to a second access service device, and the method includes: the second access service device
  • the access client of the device is assigned an association identifier.
  • the association identifier is used to indicate that the access client has accessed the second access service device.
  • the second access service device sends the association identifier to the access client.
  • the method provided in the embodiment of the present application further includes: the second access service device receives a fifth message from the access client, where the fifth message is used to indicate that the access client will pass
  • the Wi-Fi signal is connected to the first access service device.
  • the second access service device processes the fifth message, obtains the first message, and sends the first message to the first access service device.
  • the first message indicates that the access client will access the first access service through a Wi-Fi signal. service equipment.
  • the second access service device sending the first message to the first access service device further includes: the second access service device sending the access client The corresponding probe request message, or send a probe request message and an identity authentication request message.
  • the fifth message includes the association identifier.
  • the second access service device determines according to the association identifier that the access client has accessed the second access service device, and in response to the fifth message, the second access service device sends the first message to the first access service device.
  • the second access service device sends the association identifier to the access client, including: during the process of the access client accessing the second access service device, the second access service The device sends the association identifier to the access client.
  • the second access service device sending the association identifier to the access client includes: after the access client accesses the second access service device, the second access service device sends The access client sends the association identifier.
  • an embodiment of the present application provides a computer-readable storage medium, in which a computer program or instruction is stored, and when the computer program or instruction is run on a computer, the computer executes the computer program as described in the first aspect to the second aspect.
  • the computer may be the first access service device.
  • the embodiment of the present application provides a computer-readable storage medium, in which a computer program or instruction is stored, and when the computer program or instruction is run on the computer, the computer is made to execute the following aspects as described in the second aspect to the first aspect.
  • the computer can be an access client.
  • the embodiment of the present application provides a computer-readable storage medium, in which a computer program or instruction is stored, and when the computer program or instruction is run on the computer, the computer is made to execute the third aspect to the first aspect.
  • the computer may be the second access service device.
  • the embodiment of the present application provides a computer program product including instructions.
  • the instructions When the instructions are run on the computer, the computer executes a control device described in the first aspect or various possible implementations of the first aspect. The method to send the message.
  • the embodiment of the present application provides a computer program product including instructions, when the instructions are run on the computer, the computer executes a control device described in the second aspect or various possible implementations of the second aspect The method to send the message.
  • the embodiment of the present application provides a computer program product including instructions, which, when the instructions are run on the computer, cause the computer to execute the control device described in the third aspect or various possible implementations of the third aspect The method to send the message.
  • the embodiment of the present application provides a communication device for implementing various methods in various possible designs of any one of the foregoing first aspect to the third aspect.
  • the communication device may be the above-mentioned first access service device, or an apparatus including the above-mentioned first access service device, or a component (for example, a chip) applied in the first access service device.
  • the communication device may be the above-mentioned access client, or a device including the above-mentioned access client, or the communication device may be a component (for example, a chip) applied to the access client.
  • the communication device may be the above-mentioned second access service device, or an apparatus including the above-mentioned second access service device, or a component (for example, a chip) applied in the second access service device.
  • the communication device includes corresponding modules and units for realizing the above method, and the modules and units can be realized by hardware, software, or by executing corresponding software by hardware.
  • the hardware or software includes one or more modules or units corresponding to the above functions.
  • the communication device described in the tenth aspect above may further include: a bus and a memory, where the memory is used to store codes and data.
  • at least one processor communication interface and the memory are coupled to each other.
  • the embodiment of the present application provides a communication device, where the communication device includes: at least one processor.
  • the communication device includes: at least one processor.
  • at least one processor is coupled to a memory, and when the communication device is running, the processor executes computer-executable instructions or programs stored in the memory, so that the communication device performs any one of the first aspect or the first aspect.
  • the communication device may be the first AP, or a chip applied in the first AP.
  • the embodiment of the present application provides a communication device, where the communication device includes: at least one processor.
  • the communication device includes: at least one processor.
  • at least one processor is coupled to a memory, and when the communication device is running, the processor executes computer-executable instructions or programs stored in the memory, so that the communication device performs any one of the second aspect or the second aspect.
  • the communication device may be an access client, or a chip applied to the access client.
  • the embodiment of the present application provides a communication device, where the communication device includes: at least one processor.
  • the communication device includes: at least one processor.
  • at least one processor is coupled with the memory, and when the communication device is running, the processor executes the computer-executed instructions or programs stored in the memory, so that the communication device performs any one of the third aspect or the third aspect.
  • the communication device may be the second AP, or a chip applied in the second AP.
  • the memory described in any one of the eleventh aspect to the thirteenth aspect may also be replaced by a storage medium, which is not limited in this embodiment of the present application.
  • the communication device described in any one of the eleventh aspect to the thirteenth aspect may further include a communication interface for receiving or sending information.
  • the memory described in any one of the eleventh to thirteenth aspects may be a memory inside the communication device, of course, the memory may also be located outside the communication device, but at least one processor Computer-executable instructions or programs stored in this memory can still be executed.
  • the embodiment of the present application provides a communication device, the communication device includes one or more modules for implementing the method in any one of the above first aspects, and the one or more modules can be connected with the above first Each step in any possible implementation in one aspect corresponds.
  • the embodiment of the present application provides a communication device, the communication device includes one or more modules for implementing the method in any one of the above second aspects, and the one or more modules can be connected with the above first
  • the communication device includes one or more modules for implementing the method in any one of the above second aspects, and the one or more modules can be connected with the above first
  • the embodiment of the present application provides a communication device, the communication device includes one or more modules, used to implement the method in any one of the above third aspects, and the one or more modules can be combined with the above first
  • the communication device includes one or more modules, used to implement the method in any one of the above third aspects, and the one or more modules can be combined with the above first
  • an embodiment of the present application provides a chip system, the chip system includes a processor, and the processor is used to read and execute the computer program stored in the memory, so as to execute the first aspect and any possible implementation thereof.
  • the chip system may be a single chip, or a chip module composed of multiple chips.
  • the chip system further includes a memory, and the memory and the processor are connected to the memory through a circuit or wires.
  • the chip system further includes a communication interface. The communication interface is used to communicate with other modules outside the chip.
  • an embodiment of the present application provides a chip system, the chip system includes a processor, and the processor is used to read and execute the computer program stored in the memory, so as to execute the second aspect and any possible implementation thereof.
  • the chip system may be a single chip, or a chip module composed of multiple chips.
  • the chip system further includes a memory, and the memory and the processor are connected to the memory through a circuit or wires.
  • the chip system further includes a communication interface. The communication interface is used to communicate with other modules outside the chip.
  • an embodiment of the present application provides a chip system, the chip system includes a processor, and the processor is used to read and execute the computer program stored in the memory, so as to execute the third aspect and any possible implementation thereof.
  • the chip system may be a single chip, or a chip module composed of multiple chips.
  • the chip system further includes a memory, and the memory and the processor are connected to the memory through a circuit or wires.
  • the chip system further includes a communication interface. The communication interface is used to communicate with other modules outside the chip.
  • the embodiment of the present application provides a communication system, the communication system includes: an access client and a first service access device, wherein the first service access device is configured to implement the first aspect and any possibility thereof
  • the method in the implementation manner of the access client is used to execute the method in the second aspect and any possible implementation manners thereof.
  • the communication system may further include: a second service access device, where the second service access device is configured to execute the method in the third aspect and any possible implementation manners thereof.
  • any device or computer storage medium or computer program product or chip or communication system provided above is used to execute the corresponding method provided above. Therefore, the beneficial effects that it can achieve can refer to the corresponding method provided above. The beneficial effects of the corresponding solution in the method will not be repeated here.
  • FIG. 1A is a schematic diagram of the relationship between the number of STAs and throughput
  • FIG. 1B is a schematic diagram of a conflict between a STA that has not accessed an AP and an AP provided in an embodiment of the present application;
  • FIG. 2 is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of another communication system provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a hardware structure of a communication device provided in an embodiment of the present application.
  • FIG. 5 is a flow chart of a method for controlling a device to send a message according to an embodiment of the present application
  • FIG. 6 is a schematic diagram of a first access service device allocating a first time range for an access client according to an embodiment of the present application
  • FIG. 7 is a flow chart of a method for an access client to access an access service device provided in an embodiment of the present application
  • FIG. 8A is a flow chart of another method for controlling a device to send a message according to an embodiment of the present application.
  • FIG. 8B is a flow chart of yet another method for controlling a device to send a message according to 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 another communication device provided by an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a chip provided by an embodiment of the present application.
  • a and/or B may indicate: A exists alone, A and B exist at the same time, and B exists alone, Wherein A and B can be singular or plural.
  • the character "/" generally indicates that the contextual objects are an "or" relationship.
  • references to "one embodiment” or “some embodiments” or the like in this specification means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application.
  • appearances of the phrases “in one embodiment,” “in some embodiments,” “in other embodiments,” “in other embodiments,” etc. in various places in this specification are not necessarily All refer to the same embodiment, but mean “one or more but not all embodiments” unless specifically stated otherwise.
  • the terms “including”, “comprising”, “having” and variations thereof mean “including but not limited to”, unless specifically stated otherwise.
  • the term “connected” includes both direct and indirect connections, unless otherwise stated. "First” and “second” are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features.
  • Access service equipment which is an important part of wireless local area network (WLAN), is used to provide wireless network (for example, Wi-Fi signal) coverage environment and equipment for accessing clients to access the network .
  • WLAN wireless local area network
  • the access client connects to the access service device in a wireless manner to access the network (such as the Internet).
  • the access clients may transmit data to each other through the access service device, for example, transmit data to each other through the wireless connection service of the access service device, or transmit data to each other through the wired connection service of the access service device.
  • the access service device in this embodiment of the present application may be an access point (access point, AP), commonly known as a "hot spot".
  • the access service device involved in the embodiment of this application can be a home router with Wi-Fi function or a customer premise equipment (CPE) wireless router, or other mobile terminals that can be used as hotspot devices, such as smart Mobile phones, notebook computers, tablet computers, etc., which are not specifically limited in this embodiment of the present application.
  • the Wi-Fi signal in the embodiment of this application is used to enable the access client to access the wireless local area network to realize network communication.
  • the Wi-Fi signal includes a Wi-Fi signal with a frequency of 2.4GHz and a Wi-Fi signal with a frequency of 5GHz, etc. .
  • Wi-Fi signals are usually provided by access service equipment.
  • Access client refers to the device that accesses the network (such as the Internet) through the access service provided by the access service device, which can be the next-level access service device of the access service device, or a station (station, STA ) and other electronic equipment.
  • the access service device which can be the next-level access service device of the access service device, or a station (station, STA ) and other electronic equipment.
  • AP1 accesses AP2
  • AP1 can be regarded as the next-level access service device of AP2
  • AP2 can be regarded as the upper-level access service device of AP1
  • called AP1 can be regarded as a child access service device of AP2
  • AP2 is a parent access service device of AP1.
  • AP1 can also be regarded as a STA.
  • a station is an electronic device that has a wireless connection function and can provide users with voice and/or data connectivity, and can access the network through an AP. It can also be called a terminal device, User equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT), etc.
  • UE User equipment
  • MS mobile station
  • MT mobile terminal
  • examples of some sites include: mobile phone, tablet computer, notebook computer, palmtop computer, mobile internet device (MID), wearable device, virtual reality (VR) device, augmented reality (augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical surgery, and smart grid wireless terminals in transportation safety (transportation safety), wireless terminals in smart city (smart city), wireless terminals in smart home (smart home), vehicle-mounted equipment, etc.
  • MID mobile internet device
  • VR virtual reality
  • AR augmented reality
  • wireless terminals in industrial control wireless terminals in self driving
  • wireless terminals in remote medical surgery and smart grid wireless terminals in transportation safety (transportation safety), wireless terminals in smart city (smart city), wireless terminals in smart home (smart home), vehicle-mounted equipment, etc.
  • Multi band multi concurrent also known as: multi-band multi-transmission mode: supports multiple frequency bands (bands), each band has an independent transceiver channel, which can work at the same time.
  • Multi-band single concurrent mode supports multiple bands, but uses the same transceiver channel, and can only work in one band at the same time; if Need to change to another band, need to switch channels.
  • the 5GHz frequency band has become the mainstream frequency band for wireless access due to its large number of channels, small non-Wi-Fi interference, and wide frequency band; in actual use, the 5GHz frequency band is often used to transmit Data services with high throughput requirements.
  • Association response (association response) message which can also be called: association response frame
  • association response message when STA tries to access an access point, the access point will reply association response message to the association request (association request) message from STA .
  • association request association request
  • the access point specifies an association identifier (association ID).
  • Association request (association request) message which can also be called: association request frame
  • STA finds a compatible network and passes identity verification, then sends association request message to try to join the network.
  • the capability information (performance information) field is used to indicate the network type that the mobile workstation will join.
  • the access point verifies that the capability information, SSID, and (extended) supported rate fields match the network parameters.
  • Beacon (beacon) frame is mainly used to declare the existence of a certain network.
  • the beacon frame regularly transmitted by the AP can let the STA know the existence of the network, so as to adjust the necessary parameters to join the network.
  • the access point is responsible for transmitting the beacon frame, and the range covered by the beacon frame is the basic service area of the AP.
  • Trigger frame A new control frame (control frame) defined by the 802.11ax standard, which is sent by the AP to the access client. After receiving the Trigger frame, the access client feeds back the TB-PPDU frame within the short frame interval (short interframe space, SIFS).
  • SIFS short interframe space
  • TB-PPDU A PPDU format defined by the 802.11ax standard, in response to the Trigger frame sent by the AP.
  • Information element (information element, IE), a component of 802.11 management frame, which consists of two parts: frame header and frame body.
  • the frame entity includes two parts: a fixed field and a series of information units.
  • IE consists of three parts: a 1-byte Element ID field, a 1-byte Length field, and a variable-length Information field.
  • the 802.11 standard adopts the CSMA/CA competition mechanism, which allows APs and STAs to compete fairly for the air interface, and uses physical and virtual carrier sense technology, which can effectively reduce transmission conflicts between APs and STAs.
  • a larger EDCA backoff window parameter needs to be selected, which leads to a very obvious decrease in throughput, as shown in Figure 1A, so the centralized control of APs (hereinafter referred to as: centralized control in this application) gradually becomes As a trend, centralized control allows the AP to allocate message sending time and message receiving time for each access client accessing the AP, without using the CSMA/CA competition mechanism, which can effectively improve throughput and delay.
  • the message sending time in the embodiment of the present application is used for the access client to send an uplink message (also called: uplink message) to the AP, and the message receiving time is used for the access client to receive the downlink message from the AP ( It can also be called: downlink message).
  • the AP does not know the online time of the access client A. In other words, for the AP, the AP does not know when the access client A will access The AP. In addition, if the AP cannot predict the online time of the access client A, it cannot allocate a packet sending time for the access client A. This requires the access client A to actively report the probe request and other messages, but the time range for the access client A to actively report the probe request and other messages may be different from that of the AP for other access clients (for example, the access client B and the access client B). Any one of the packet sending time or packet receiving time allocated by the inbound client C) overlaps.
  • the uplink messages sent by different access clients to the AP at the same time will collide, and the AP sends messages to other
  • the downlink packet sent by the inbound client may also collide with the uplink packet sent by the access client A, thus causing interference.
  • both access client C and access client B communicate with the AP on the working frequency band 1, and the AP allocates a packet receiving time range (for example, downlink time range (downlink, DL )1).
  • the AP allocates a message receiving time range (for example, DL2) for the access client B.
  • the access client B and the access client C may feed back an acknowledgment (Acknowledgment, ACK).
  • ACK acknowledgment
  • the AP since the AP centrally controls each access client, when the AP needs to access the client C to send an uplink message, the AP can trigger the access client C to send a trigger message on the uplink (uplink, UL) 1 to trigger the access Client C sends an uplink message to the AP.
  • an access client A not connected to the AP sends an uplink message such as a probe request message to the AP within the time range shown in FIG. 1B . Since the time range overlaps with the time range corresponding to UL1, that is, it will inevitably cause interference to the communication between the AP and the access client C, causing a conflict. Or, if the AP intends to use UL1 as the time range for accessing client C to send uplink messages, but if access client A sends uplink messages in the time range corresponding to UL1, it will also affect the AP as the time range for accessing client C. Allocate the time range for sending messages.
  • an embodiment of the present application provides a method for controlling a device to send a message.
  • the first access service device triggers the access client to The initial time range allowed by the access service device sends the first uplink message to the first access service device through the first working frequency band, which prevents the access client from actively sending the first access service device before accessing the first access service device.
  • the first uplink message sent by the device occurs, thereby avoiding the interference caused by the first uplink message sent by the access client to the communication between the first access service device and other access clients.
  • FIG. 2 is a schematic structural diagram of a communication system provided by an embodiment of the present application, and the system includes: an access service device 100 and an access client 200 .
  • the access service device 100 is used to provide services for access clients accessing the access service device 100 .
  • the access service device 100 may establish a first communication connection with the access client 200 by means of Bluetooth, general packet radio service (GPRS), near field communication (near field communication, NFC), and the like.
  • GPRS general packet radio service
  • NFC near field communication
  • the access client 200 may provide the access service device 100 through the first communication connection.
  • An indication of a true signal access access service device 100 An indication of a true signal access access service device 100 .
  • the access service device in this embodiment of the present application may be an AP.
  • the difference between FIG. 3 and FIG. 2 is that the communication system shown in FIG.
  • the inbound client 200 may not have the first communication connection with the access service device 100.
  • the access service device 300 is also used to provide services for access clients accessing the access service device 100 .
  • the access client 200 in the embodiment of the present application accesses an access service device, it can access the network through the access service device to access the video and pictures on the cloud multimedia server. , web pages, audio, documents, and more.
  • the access client 200 may access the access service device 100 through a working frequency band of the access service device 100 .
  • the access service device 300 and the access service device 100 in this embodiment of the present application may be access devices in the same wireless local area network (wireless local area network, WLAN). In this way, after the access client 200 accesses the access service device 100 with a Wi-Fi signal, the access client 200 can implement access to the WLAN through the access service device 100 .
  • WLAN wireless local area network
  • the access service device 300 can be regarded as the source access service device of the access client 200, and the access service device 100 can be regarded as the access client 200.
  • the terminal 200 needs to switch the target access service device, that is, the access client 200 needs to switch from the access service device 300 to the access service device 100 .
  • the access client 200 switches from the access service device 300 to the access service device 100, reference may be made to the description in the following embodiments, which will not be repeated here.
  • the access service device 300 and the access service device 100 are different access service devices.
  • the communication system It may also include: an access controller (access controller, AC) 400 .
  • the access service device 300 and the access service device 100 are respectively connected to the AC 400, and can communicate with each other.
  • AC 400 is used to manage the access service devices connected to it.
  • the AC 400 can optimize the access service equipment so that the access service equipment can provide better services.
  • the AC 400 can also transfer between the access service equipment 300 and the access service equipment 100.
  • the AC 400 forwards the message from the access service device 300 to the access service device 100 through the wireless access point control and provision (controlling and provisioning of wireless access point, CAPWAP) message of the AC 400, thereby realizing the access communication between the access service device 300 and the access service device 100.
  • CAPWAP defines how to communicate between the access service device and the AC, and provides a general encapsulation and transmission mechanism for realizing interoperability between the access service device and the AC.
  • a basic service set (basic service set, BSS) can be formed, that is, the access service device 300 and the access service device 100 are different access service devices in the same BSS.
  • the access clients in the embodiment of the present application can switch among the same service set identifiers (service set identifier, SSID).
  • one access service device may be configured with multiple service set identifiers.
  • the access service device 300 is configured with SSID1 and SSID2.
  • the access service device 100 is configured with SSID2 and SSID3.
  • SSID2 is the same service set identifier provided by the access service device 300 and the access service device 100 for the access client 200. Therefore, the access client 200 can pass the access service device
  • the SSID2 of 300 accesses the network, and can also switch to the access service device 100 to access the network through the SSID2 of the access service device 100 .
  • the access client 200 can access the WLAN network through the access service device, and the service configuration service set identification mechanism is a basic authentication mechanism.
  • the access service device has its own SSID.
  • the SSID of each access service device is set by the owner of the access service device.
  • the owner of the access service device can be a WLAN operator. , place owners or individual users, etc.
  • the access client 200 When the access client 200 wants to access a certain WLAN network area, the access client 200 must know the SSID identifier of the WLAN network, and the access client 200 sends a message carrying the SSID to the AP in the WLAN network area through the WLAN client. After receiving the access request, the A access service device judges whether the SSID sent by the access client 200 is the same as its own SSID. If they are the same, the AP allows the access client 200 to pass through The Wi-Fi signal communicates with the access service device (for example, the access service device 100 or the access service device 300) to access the network. If it is different, the access service device will deny the access client 200 to access the network. network.
  • the access service device for example, the access service device 100 or the access service device 300
  • This process may include four stages: service discovery stage, link authentication stage, association stage, and access authentication stage:
  • the service discovery phase refers to a process in which the STA searches for a wireless network. Scanning can be divided into active scanning and passive scanning. Active scanning means that STAs actively detect and search for wireless networks. Passive scanning means that STAs passively receive wireless signals sent by APs.
  • the active scanning may be, for example, that when the STA needs to try to associate with the access service device, the STA may sequentially send detection signals on its supported channels to detect surrounding wireless networks.
  • the probe signal may be, for example, a probe request (probe request) message.
  • the receiving address of the probe request message is the MAC address of the access service device
  • the sending address is the MAC address of the STA.
  • the SSID may not be carried in the detection request message, so as to detect all available wireless networks around.
  • the access service device that receives the probe request message will respond to the STA and indicate its own SSID.
  • the access service device 100 and the access service device 300 can send a probe response (probe response) message carrying the SSID to the STA.
  • the STA can determine the SSIDs of all available wireless networks around.
  • Passive scanning can be, for example, that the access service device periodically sends wireless network information to STAs within its coverage, for example, the access service device 300 can carry the SSID of the wireless network in the beacon, and broadcast the beacon periodically frame.
  • a STA can determine the SSIDs of available wireless networks around it by listening for beacon frames on each channel it supports.
  • the STA After the STA determines that there is an available wireless network around, it will proceed to the next step of link authentication.
  • the link authentication stage refers to a process in which the access service device determines the legitimacy of the STA.
  • link authentication usually adopts an open system authentication method.
  • the STA sends an authentication request message to the access service device).
  • the access service device After receiving the identity authentication request message from the STA, the access service device feeds back an authentication response message.
  • the identity authentication response message indicates that the authentication is allowed.
  • the identity authentication response message indicates that the authentication fails.
  • Open system authentication is an insecure authentication method, so it is usually used in combination with other access authentication methods to improve security.
  • the association phase refers to the process of wireless link service negotiation between the STA and the access service device.
  • the STA will send an association request message to the access service device, which contains various parameters of the STA and various parameters selected by the STA according to the service configuration, for example, it may include the rate and channel supported by the STA, the selected access Authentication methods and encryption algorithms, etc.
  • the access service device receives the association request message from the STA, it will configure the corresponding wireless link service for the STA according to the parameters carried in it, such as determining whether it is necessary to configure the access service for the STA. Authentication, and which access authentication method and encryption algorithm to configure for the STA.
  • the STA sends an association request message, and the access service device responds with an association response message.
  • the access authentication stage refers to the process of authenticating the wireless connection and determining whether the STA has the right to access the wireless network.
  • the access authentication can adopt the "four-way handshake" (4-way handshake) access authentication method.
  • the purpose of the "four-step handshake” is to negotiate a temporary transmission key (pairwise transient key, PTK), where the PTK is used to encrypt the propagation frame between the subsequent STA and the access service device.
  • the SSID password (that is, the password manually entered by the user when connecting to the wireless network corresponding to the SSID in the prior art) will be used in the "four-step handshake" process, so before the "four-step handshake" starts, the STA needs to know the SSID password .
  • Each of the one or more STAs, one or more access points may operate following a standard such as, by way of illustrative, non-limiting example, the IEEE 802.11 standard (e.g., IEEE 802.11k, IEEE 802.11ai, or both) and/or Wi-Fi Alliance standards (eg, Optimized Connectivity Experience (OCE) standard, Multi-Band Operation (MBO) standard, or both).
  • IEEE 802.11 standard e.g., IEEE 802.11k, IEEE 802.11ai, or both
  • Wi-Fi Alliance standards eg, Optimized Connectivity Experience (OCE) standard, Multi-Band Operation (MBO) standard, or both.
  • the measurement data obtained through 802.11k can be used to provide the application layer to decide whether to implement smart roaming, load balancing and other strategies. Then 802.11V (BBS switching management frame): and 802.11R (fast BSS switching) perform the switching action of the STA, and quickly associate and switch to the new access service device.
  • BSS switching management frame BSS switching management frame
  • 802.11R fast BSS switching
  • FIG. 4 shows a schematic diagram of a hardware structure of a communication device provided in an embodiment of the present application.
  • the communication device includes a processor 401, a communication line 404, and at least one communication interface (in FIG. 4, the communication interface 403 is used as an example for illustration).
  • the processor 401 can be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, a specific application integrated circuit (application-specific integrated circuit, ASIC), or one or more for controlling the implementation of the application program program integrated circuit.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • Communication line 404 may include a pathway for communicating information between the above-described components.
  • the communication interface 403 is used for information exchange with other devices, such as using any device such as a transceiver for communicating with other devices or communication networks, such as Ethernet, radio access network (radio access network, RAN), wireless LAN (wireless local area networks, WLAN), etc.
  • a transceiver for communicating with other devices or communication networks, such as Ethernet, radio access network (radio access network, RAN), wireless LAN (wireless local area networks, WLAN), etc.
  • the communication device may further include a memory 402 .
  • the memory 402 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (random access memory, RAM) or other types that can store information and instructions It can also be an electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be programmed by a computer Any other medium accessed, but not limited to.
  • the memory may exist independently and be connected to the processor through the communication line 404 . Memory can also be integrated with the processor.
  • the memory 402 is used to store computer-executed instructions for implementing the solution of the present application, and the execution is controlled by the processor 401 .
  • the processor 401 is configured to execute computer-executed instructions stored in the memory 402, so as to implement a method for controlling a device to send a message provided in the following embodiments of the present application.
  • the computer-executed instructions in the embodiments of the present application may also be referred to as application program codes, which is not specifically limited in the embodiments of the present application.
  • the processor 401 may include one or more CPUs, for example, CPU0 and CPU1 in FIG. 4 .
  • the communication device may include multiple processors, for example, the processor 401 and the processor 405 in FIG. 4 .
  • processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor.
  • a processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).
  • the specific structure of the execution subject of a method for controlling a device to send a message is not particularly limited in this embodiment of the application, as long as the method for controlling a device to send a message in the embodiment of this application can be recorded through operation
  • the program of the code can communicate with a method for controlling a device to send a message according to an embodiment of the present application.
  • the execution subject of a method for controlling a device to send a message provided in the embodiment of the present application may be a functional module in the first access service device capable of invoking and executing the program, or a function module applied in the first access service device
  • a communication device eg, a chip, a system-on-a-chip, an integrated circuit, or the like.
  • the execution subject of the method for controlling a device to send a message provided in the embodiment of the present application may be a functional module in the access client that can call a program and execute the program, or a communication device applied to the access client
  • chips, chip systems, integrated circuits, etc. These chips, chip systems, and integrated circuits can be installed inside the access client, or can be independent from the access client, which is not limited in the embodiment of the present application.
  • the following embodiments are described by taking a method for controlling a device to send a message as an example in which the executing subject is an access client and a first access service device.
  • FIG. 5 is a method for controlling a device to send a message provided in an embodiment of the present application.
  • the method includes:
  • Step 501 before the access client accesses the first access service device, the first access service device triggers the access client to send the first uplink message to the first access service device through the first working frequency within the initial time range.
  • the first uplink message is the first message sent by the access client to the first access service device for accessing the first access service device.
  • the first working frequency band is a frequency range of Wi-Fi signals used for communication between the first access service device and the access client.
  • the initial time range is the time range during which the access client sends the first uplink message to the first access service device for accessing the first access service device.
  • the first time range is the time range in which the access client sends the first uplink message to the first access service device before accessing the first access service device.
  • the first working frequency band is mainly used for the first access service device to communicate with the access client in a Wi-Fi manner.
  • the first uplink message involved in this embodiment of the present application refers to: the uplink message sent by the access client to the first access service device before accessing the first access service device, for example, the access client
  • the first uplink message sent to the first access service device is used to request access to the first access service device.
  • the first uplink message may be one or more of a probe request message (also called a probe request frame), an identity authentication request message, and an association request message, which is not limited in this embodiment of the present application.
  • the first access service device may be the access service device 100 .
  • the access client may be the access client 200 .
  • the access client has not yet accessed the first access service device through the Wi-Fi signal.
  • the access client may be a next-level access service device of the first access service device, or an STA, which is not limited in this embodiment of the present application.
  • the first access service device can manage access clients that have accessed the first access service device. For example, the first access service device assigns one or more of the message receiving time and message sending time to the access client that has accessed the first access service device, so that the access client that has accessed the first access service device
  • the access client of the service device can communicate with the first access service device according to one or more of the message receiving time and the message sending time.
  • the management method of assigning one or more of the message receiving time and the message sending time to the access client that has accessed the first access service device is called: centralized control . That is, the first access service device can manage the access clients that have accessed the first access service device in a centralized control manner.
  • the message receiving time is used for receiving the downlink message from the first access service device.
  • the message sending time is used for the access client to send the uplink message to the first access service device.
  • the access client can support switching between different working frequency bands.
  • different working frequency bands belong to different access service devices, it can be regarded as that the access client can switch between different access service devices.
  • the access client supports switching from the second access service device to the first access service device, that is, before the access client needs to access the first access service device through a Wi-Fi signal, the access client The terminal has accessed the second access service device through a working frequency band of the second access service device.
  • the access client supports MBMC or MBSC.
  • the The first access service device may hide the SSID of the first access service device. In other words, the first access service device may not broadcast the SSID of the first access service device.
  • the way that the first access service device triggers the access client to send the first uplink message to the first access service device through the first working frequency range within the initial time range can be "direct trigger” or "indirect trigger”. trigger”.
  • the so-called “direct trigger” means: after the access client switches to the first working frequency band, the first access service device sends the second message or the third message to the access client on the first working frequency band to trigger The access client sends the first uplink message to the first access service device through the first working frequency band within the initial time range, and the specific process is shown in step 810a in FIG. 8A .
  • “Indirect trigger” means: the first access service device forwards the trigger to the access client through the second access service device to trigger the access client to send the first uplink to the first access service device through the first working frequency band within the first time range A message of a message, such as step 807b shown in FIG. 8B .
  • step 501 For the specific implementation of step 501, reference may be made to the following steps for implementation, which will not be repeated here.
  • the purpose of the first access service device performing step 501 is to make the access client determine to send the first uplink message to the first access service device through the first working frequency band within the first time range.
  • Step 502 based on the trigger of the first access service device, the access client sends the first uplink message to the first access service device through the first working frequency band within the first time range.
  • the method provided in the embodiment of the present application may further include: accessing the client terminal to acquire information about the time range of the first launch and the first working frequency band.
  • the access client before the access client accesses the first access service device through the Wi-Fi signal, if there are other communication connections between the access client and the first access service device (for example, the first communication connection), then the access client can obtain the information of the first time range and the first working frequency band in the following manner: the access client obtains the first broadcast from the first access service device through the first communication connection The information of the time range and the information of the first working frequency band.
  • the access client obtains the first broadcast from the first access service device through the first communication connection The information of the time range and the information of the first working frequency band.
  • the The access client can acquire the information of the launch time range and the first working frequency band in the following manner: the access client can obtain the information of the launch time range and the first frequency band from the first access service device through the second access service device Information about the working frequency band.
  • An embodiment of the present application provides a method for controlling a device to send a message.
  • the first access service device triggers the access
  • the first time range allowed by the device is to send the first uplink message to the first access service device through the first working frequency band, which prevents the access client from actively sending the first uplink message to the first access service device before accessing the first access service device.
  • the uplink message occurs, thereby avoiding the first uplink message sent by the access client from interfering with the communication between the first access service device and other access clients.
  • the embodiment of the present application before the first access service device triggers the access client to send the first uplink message to the first access service device through the first working frequency band within the initial time range, the embodiment of the present application provides The method may further include: the first access service device determines that the access client will access the first access service device through a Wi-Fi signal.
  • step 805 the description of step 805 in the following embodiments, which will not be repeated here.
  • the embodiment of the present application before the first access service device triggers the access client to send the first uplink message to the first access service device through the first working frequency band within the initial time range, the embodiment of the present application provides The method may further include: the first access service device determines the first working frequency band and the first launch time range for the access client.
  • the main purpose of the first access service device assigning the first time range to the access client is to enable the access client to subsequently send The first uplink message, in this way, on the one hand, for the first access service device, the first access service device will also know the time range when the access client sends the first uplink message. On the other hand, if the access client sends the first uplink message in time range 1 (non-first time range), if time range 1 and time range 2 overlap, it can also be considered as a conflict. Referring to the above description, the interference will Communication between the first access service device and other access clients is affected. Wherein, the time range 2 is the time range during which the first access service device receives uplink messages sent by other access clients or sends downlink messages to other access clients.
  • the access client Since the access client has not yet accessed the first access service device at this time, the first uplink message sent by the access client in time range 1 will constitute interference when the first access service device communicates with other access devices Signals affect the reception and transmission between the first access service device and other access clients. Therefore, allocating the first time range for the access client can prevent the signal sent by the access client from being inconsistent with the first access service device and other access clients. Receive and send conflicts between access clients.
  • the first access service device can also allocate the packet receiving time range for the access client, and send the message sending time range except for the first uplink message one or more of the .
  • the first access service device can implement centralized control of the access client by the first access service device by allocating one or more of the first time range, message reception time range, and message sending time range for the access client .
  • the launch time range in this embodiment of the present application is allocated by the first access service device to the access client before the access client accesses the first access service device.
  • the message receiving time range in the embodiment of the present application and the sending time range of the message except the first uplink message are after the access client accesses the first access service device, the second An access service device allocated for access clients.
  • the first access service device performs centralized control on the first working frequency band. It is worth noting that if there are other access clients other than the access client that have accessed the first access service device through the first working frequency band, then the first access service device assigns the first access time to the access client. For the range, you can refer to the packet receiving time range/message sending time range that the first access service device has allocated for other access clients, so that there is no intersection between the first time range and the packet receiving time range/message sending time range , thereby avoiding conflicts.
  • the access client As shown in FIG. 6 , taking the access client as STA1 as an example, STA1 has not connected to the first access service device, and STA2 and STA3 have connected to the first access service device through the first working frequency band. Since the first access service device manages STA2 and STA3 in a centralized control manner, it is assumed that the first access service device allocates a downlink time range 1 and an uplink time range 1 to STA2. The first access service device assigns the downlink time range 2 and the uplink time range 2 to STA3.
  • STA2 and STA3 can communicate with the first access service device within the time range allocated by the first access service device, so in order to avoid the time range allocated by the first access service device for STA2 and STA3 from the first access service
  • the first time range allocated by the device to STA1 conflicts, then the first access service device can avoid downlink time range 1, uplink time range 1, downlink time range 2 and uplink time range 2 when allocating the first time range for STA1. That is to say, the launch time range has no intersection with the downlink time range 1, uplink time range 1, downlink time range 2, and uplink time range 2.
  • the first access service device can set T1 A period or periods after the moment as the starting timeframe.
  • the first access service device may set A period of time or several periods of time after time T2, one or more time periods in time period 1 and time period 2 are used as the starting time range.
  • STA2 and STA3 have connected to the first access service device through the first working frequency band as an example.
  • STA2 and STA3 can also access the first access service device through other working frequency bands supported by the first access service device.
  • the first access service device also adopts centralized control on the other working frequency band.
  • the working frequency band involved in the embodiment of the present application may be identified by a band and a channel (channel).
  • the first working frequency band may be allocated for the access client by the first access service device itself.
  • the first access service device may provide the access client with a band identifier and a channel identifier, so that the access client can determine the first Information about the working frequency band.
  • the first working frequency band allocated by the first access service device is not the working frequency band supported by the access client
  • the first working frequency band is allocated by the first access service device and the access The client negotiates and determines, so that the first working frequency band allocated by the first access service device to the access client is supported by the access client.
  • the first access service device and the access client may negotiate to determine the first working frequency band through the first communication connection. For another example, before the access client accesses the first access service device, if the access client has already accessed the second access service device, then the access client can communicate with the first access service device through the second access service device. The inbound service device negotiates to determine the first working frequency band.
  • the first access service device before allocating the first working frequency band, acquires the information of the working frequency band supported by the access client.
  • the first access service device can refer to the working frequency band supported by the access client when allocating the first working frequency band, so that the first working frequency band is the working frequency band supported by the access client.
  • the first access service device obtains the working frequency band supported by the access client it can be realized in the following manner: the first access service device obtains the identification information of the access client, and the first access service device The information obtains the capability set of the access client from the cloud server or the second access service device accessed by the access client. Wherein, the capability set includes working frequency bands supported by the access client.
  • the first access service device acquires the working frequency band supported by the access client from the second access service device.
  • the first access service device acquires the capability set of the access client from the access client through the first communication connection with the access client.
  • the initial time range may be allocated for the access client by the first access service device itself. For example, there is no intersection between the initial time range and the packet receiving/sending time allocated by the first access service device for other access clients.
  • the first time range of first access service is negotiated and determined by the first access service device and the access client, so that the first time range of first time allocated by the first access service device into the client's needs.
  • the first access service device may acquire the time range expected by the access client before allocating the first time range.
  • the first access service device can refer to the expected time range of the access client when allocating the first time range, so that the first time range meets the requirements of the access client. For example, if the access client wants to send the first uplink message to the first access service device in the time range X, then the first access service device can use the time range X as the first time range, or the first time range includes the time range X wait.
  • the first time range in this embodiment of the present application may be a time point, for example, T1, which means that the first access service device expects the access client to send the first uplink message to the first access service device at this time point T1.
  • T1 time point
  • the first access service device may also instruct the access client to send the first uplink message to the first access service device before or after the time point.
  • the starting time range in the embodiment of the present application may be a time period, or called a time interval, such as T1 ⁇ T2, (a, b), (a, b], [a, b), [a, b] Any one or more of them, which means that the first access service device hopes to access the client at T1 ⁇ T2, (a, b), (a, b], [a, b), [a, b], etc. Any one of the time intervals indicated sends the first uplink message to the first access service device. Or, for example, the first time range may also be a countdown.
  • the first time range is 10 milliseconds, it means that the first access service device expects the access client to send the first uplink message to the first access service device after 10 milliseconds.
  • the starting time range may be a discontinuous periodic time range.
  • the first time range may include an initial transmission time range, that is, the first time range is only used to transmit an uplink message for the first time.
  • the access client fails to send the first uplink message to the first access service device within the initial transmission time range, so in order to improve communication reliability, the first transmission time range in the embodiment of this application
  • one or more retransmission time ranges may also be included, where the retransmission time range is the time range for resending the first uplink message.
  • the access client fails to send the first uplink message to the first access service device, then the subsequent access client may send the first uplink message to The time range for resending the first uplink message.
  • the retransmission time range does not conflict with the packet receiving time and/or packet sending time allocated by the access client to other clients.
  • the number of retransmission time ranges above can be determined by the first access service device. For example, the first access service device assigns the maximum number of retransmissions to the access client as 5 times, then the number of retransmission time ranges is 5 .
  • the access client first accesses the second access service device, and then the access client switches from the second access service device to the first access service device.
  • the second access service device may be an access service device 300 .
  • the second access service device in the embodiment of the present application can broadcast the SSID of the second access service device, so that the access client can Actively attempt to access the second access service device.
  • the first access service device and the second access service device in this embodiment of the application may both be able to perform centralized control, or the first access service device may perform centralized control, while the second access service device cannot perform centralized control
  • the second access service device adopts a carrier sense multiple access with collision avoidance (CSMA/CA) access manner.
  • CSMA/CA carrier sense multiple access with collision avoidance
  • FIG. 7 shows a method for accessing a client to access a service device provided by an embodiment of the present application.
  • the method includes:
  • Step 701 the second access service device broadcasts a beacon (beacon) frame.
  • the beacon frame may carry the SSID of the second access service device.
  • Step 702 After detecting the beacon frame, the access client sends a probe request message to the second access service device. Correspondingly, the second access service device receives the probe request message from the access client.
  • the receiving address of the probe request frame is the MAC address of the second access service device
  • the sending address is the MAC address of the access client.
  • Step 703 the second access service device sends a probe response (probe response) message carrying the SSID to the access client, which may also be called a probe request frame.
  • the access client receives a probe response (probe response) message from the second access service device. In this way, after receiving the probe response message sent by the second access service device, the access client can determine the SSIDs of all available wireless networks around.
  • the above steps 701 to 703 can be regarded as a service discovery stage.
  • Step 704 the access client sends an identity authentication request (authentication request) message to the second access service device.
  • the second access service device receives the identity authentication request message from the access client.
  • Step 705 the second access service device sends an identity authentication response (authentication response) message to the access client, and correspondingly, the access client receives the identity authentication response message from the second access service device.
  • identity authentication response authentication response
  • the above steps 704 to 705 can be regarded as a link authentication phase.
  • Step 706 the access client sends an association request message to the second access service device, and correspondingly, the second access service device receives the association request message from the access client.
  • Step 707 The second access service device sends an association response message to the access client, and accordingly, the access client receives the association response message from the second access service device.
  • the above steps 706 to 707 can be regarded as an association stage.
  • an access client accesses the access service device, it can be considered that the access client is associated with the access service device it accesses.
  • the following steps 708 and 709 may also be included.
  • Step 708 After the access client is associated with the second access service device, the second access service device assigns an association identifier (ASSOC_ID) to the access client.
  • ASSOC_ID association identifier
  • the second access service device provides the access client with information such as ASSOC_ID, the MAC address of the first access service device, and capability set (other information may be extended).
  • the second access service device may encapsulate information such as the ASSOC_ID, the MAC address of the first access service device, and the capability set into an association notification (AssocNotify) message (frame), and send it to the access client.
  • the second access service device may omit providing the ASSOC_ID to the access client.
  • the inbound client sends information such as the MAC address and capability set of the first access service device.
  • the AssocNotify frame is a newly defined action (Action) frame type (new ID), which is used for the second access service device to send the ASSOC_ID, the MAC address and capability of the first access service device to the access client after association Set and other information, the AssocNotify frame format is shown in Table 1 below:
  • Figure 7 takes the access service device as the second access service device as an example to describe the process of the access client accessing the access service device, and the subsequent access client access to the first access service device The process can also refer to the description of FIG. 7 , which will not be repeated here.
  • Scenario 2 The access client first establishes a first communication connection with the first access service device through means other than Wi-Fi signals. Afterwards, the access client needs to use the Wi-Fi signal to access the first access service device.
  • the first access service device in addition to the access client can actively request to switch from the second access service device to the first access service device, the first access service device can also actively guide the access client to switch from the second access service device to the first access service device.
  • the service device switches to the first access service device, which are described as follows:
  • Case 1) The access client actively requests to switch from the second access service device to the first access service device.
  • the method provided in the embodiment of the present application may also include before step 501: step 801 to step 804, specifically, step 801 to step 804 may refer to FIG. 8A ⁇ FIG. 8B, FIG. 8A and FIG. 8B are respectively another method for controlling a device to send a message provided in the embodiment of the present application.
  • Step 801 the second access service device sends the identification information of the first access service device to the access client.
  • the access client receives the identification information of the first access service device from the second access service device.
  • the identification information of the first access service device may be the MAC address or IP address of the first access service device, or an identifier that can uniquely identify the first access service device in the WLAN to which the first access service device is connected. information, which is not limited in the embodiment of this application.
  • step 801 may be implemented in the following manner: the second access service device may send the second - Identification information of the access service device.
  • the second access service device may also send the identification information of the first access service device to the access client after the access client has accessed the second access service device.
  • step 801 may be implemented in the following manner: the second access service device may send the identifier of the first access service device to the access client under the trigger of the access client information.
  • the access client can request the second access service device
  • the device sends a request message, which is used to request the identification information of the AP that meets the requirements.
  • the request message may carry information about the capability set supported by the access client.
  • the capability set supported by the access client includes one or more of the following information: the working frequency band supported by the access client itself, whether the access client is allowed to be centrally controlled, and the like.
  • the second access service device feeds back the identification information of the first access service device to the access client.
  • the request message may also include the Wi-Fi mode supported by the access client, such as 802.11ac, 802.11ax and so on.
  • step 801 may be implemented in the following manner: when the second access service device determines that the number of access clients accessing the second access service device is greater than a preset number threshold, or There is a first access service device that better serves the access client, or if the uplink of the second access service device is congested, the second access service device may actively send the The identification information of the first access service device, so as to guide the access client to switch to the first access service device.
  • the second access service device may Quality, etc. Select a first access service device from multiple first access service devices. For example, the second access service device may select an access service device that supports the working frequency band of the access client as the first access service device, or select the Wi-Fi mode supported by the access client or select a lower load, And the access service device that supports the working frequency band of the access client is used as the first access service device, and the embodiment of the present application does not limit how the second access service device selects the first access service device.
  • the access client obtains the identification information of the first access service device from the second access service device.
  • the access client can also obtain the first
  • the identification information of the access service device is not limited in this embodiment of the present application.
  • the access client after the access client obtains the identification information of the first access service device, if the access client decides to switch from the second access service device to the first access service device , then the access client executes the following step 802. If the access client decides not to switch the access service device, then the following step 802 can be omitted.
  • Step 802 the access client sends a fifth message to the second access service device.
  • the second access service device receives the fifth message from the access client.
  • the fifth message is used to indicate that the access client requests to access the first access service device through the Wi-Fi signal.
  • the fifth message may be a band switching request message (BandSwitchRequest), and may also be called a band switching request frame.
  • BandSwitchRequest Band SwitchRequest
  • the fifth message includes identification information of the access client and identification information of the first access service device.
  • the identification information of the access client is used to identify the access client.
  • the identification information of the access client may be the MAC address or IP address of the access client, or an identifier that can uniquely identify the access client in the WLAN to which the access client is connected, which is not limited in this embodiment of the present application.
  • the fifth message may further include: second indication information, wherein the second indication information is used to indicate that the access client requests to access the first access service device through a Wi-Fi signal .
  • the fifth message may further include: information about the second working frequency band.
  • the second working frequency band is a frequency range of Wi-Fi signals used for communication between the access client and the second access service device.
  • the fifth message includes a working frequency band supported by the access client itself and an expected time range. This facilitates the first access service device to specify the working frequency band supported by the access client itself and the expected time range for sending the first uplink message.
  • the fifth message may also carry an association identifier.
  • the association identifier is used to indicate that the access client has accessed the second access service device.
  • the fifth message carries the association identifier
  • the second access service device can send the probe request message and the authentication request message to the first access service device.
  • the access client can omit the process of sending the probe request message and the authentication request message to the second access service device, and perform the process of sending the association request message. Therefore, the process for the access client to access the first access service device can be shortened.
  • the second access service device forwards to the first access service device the fifth message, if the process of forwarding the probe request message and authentication request message of the access client to the first access service device is not performed, then when the subsequent access client accesses the first access service device, it needs to go through the process described in Figure 7. Steps 701 to 707 are shown to access the first access service device. As for the access client, it can determine whether it needs to send the probe request message and The process of authentication request message.
  • the second access service device may forward the probe request message and the authentication request message of the access client to the first access service device.
  • the frequency band switch request frame in the embodiment of the present application is a newly defined Action frame type (newly added ID), which is used to instruct the access client to request to access the first access service device through the Wi-Fi signal.
  • the format of the frequency band switching request frame is shown in Table 2:
  • the capability set supported by the access client in the embodiment of the present application is used by the first access service device to determine whether the access client can access the first access service device. For example, if the first access service device determines that the first access service device has a working frequency band supported by the access client (for example, the first working frequency band), then the first access service device determines that the access client can access the first working frequency band. - Access to the service device. For another example, if the first access service device determines that the Wi-Fi mode supported by the first access service device includes the Wi-Fi mode supported by the access client, then the first access service device determines that the access client can access The first access service device. Of course, if the first access service device determines that the Wi-Fi mode supported by the first access service device does not include the Wi-Fi mode supported by the access client, the first access service device determines that the access client cannot Access the first access service device.
  • the first access service device determines that the Wi-Fi mode supported by the first access service device does not include the Wi-Fi mode supported by the access
  • Step 803 the second access service device obtains the sixth message after processing the fifth message.
  • the sixth message indicates that the access client will access the first access service device through the Wi-Fi signal.
  • the second access service device may encapsulate the content carried in the fifth message into a message to obtain the sixth message. It should be noted that if the fifth message carries the association identifier, the sixth message may not carry the association identifier.
  • the fifth message includes the association identifier and message 1, and the message 1 includes other content as shown in Table 2 except ASSOC_ID, then the second access service device can use message 1 as the sixth message or repackage message 1
  • the obtained message is regarded as the sixth message, for example, the sending address of the processed message 1 is the MAC address of the second access service device, and the receiving address is the MAC address of the first access service device, which is not limited in this embodiment of the present application .
  • the sending address of the fifth message is usually the MAC address of the access client, and the receiving address is the MAC address of the second access service device, then the second access service device may encapsulate the content of the fifth message into the sending address is the MAC address of the second access service device, and receives a message whose address is the MAC address of the first access service device, thereby obtaining a sixth message.
  • Step 804 the second access service device sends a sixth message to the first access service device.
  • the first access service device receives the sixth message from the second access service device.
  • the first message is used to indicate that the access client requests to access the second access service device through a Wi-Fi signal.
  • the sixth message may be a handover request message, where the handover request message includes identification information of the access client.
  • first access service device and the second access service device in the embodiment of the present application work in different frequency bands, and interact and control through AC.
  • the first access service device and the second access service device may be different hardware entities, or a hardware entity supporting MBMC, and the first access service device and the second access service device are respectively responsible for the access of different frequency bands , for example, the first access service device is in charge of the first working frequency band, and the second access service device is in charge of the second working frequency band.
  • step 501 may be implemented through step 805 .
  • step 805 reference may be made to FIG. 8A and FIG. 8B.
  • Step 805 the first access service device determines, according to the sixth message, that the access client will access the first access service device through the Wi-Fi signal.
  • the first access service device may also determine whether to allow The access client accesses the first access service device. Normally, when the first access service device determines to allow the access client to access the first access service device, the first access service device performs the following step 706 . When the first access service device determines that the access client is not allowed to access the first access service device, the first access service device sends the first judgment result to the second access service device. The first judgment result indicates that the access client is not allowed to access the first access service device. Afterwards, the second access service device may send an indication message to the access client that the access client is not allowed to access the first access service device, which is not limited in this embodiment of the present application.
  • the first access service device determines to allow the access client to access the first access service device.
  • the preset conditions include one or more of the following: the first access service device supports the working frequency band supported by the access client, or the access client can be centrally controlled, or the load of the first access service device is lower than the preset Load threshold, the first access service device supports the Wi-Fi mode supported by the access client.
  • the preset condition is not satisfied, the first access service device determines that the access client is not allowed to access the first access service device.
  • Step 806 is the same as step 502, and will not be repeated here.
  • step 501 can be performed by Step 807a and step 810a are implemented.
  • the foregoing step 501 may be implemented through step 807b and step 810b.
  • a method for controlling a device to send a message provided in the embodiment of the present application may further include after step 806: step 807a-step 809a.
  • Step 807a the first access service device sends the first message to the second access service device.
  • the second access service device receives the first message from the first access service device.
  • the first message is used to instruct the access client to enter a waiting state after switching to the first working frequency band.
  • the access client enters the waiting state means: after the access client switches to the first working frequency band, it does not actively send an uplink message to the first access service device on the first working frequency band.
  • the access client can exit the waiting state, and send the first uplink message to the first access service device through the first working frequency band within the first time range.
  • the first message includes information about the first working frequency band.
  • the first message in the embodiment of the present application may further include first indication information (AllowAPTrigger).
  • the first indication information is used to instruct the access client to enter a waiting state after switching to the first working frequency band.
  • the first instruction information can be used to clearly indicate that the access client needs to enter the waiting state after switching to the first working frequency band, so as to prevent the access client from actively sending to the first working frequency band after switching to the first working frequency band.
  • Incoming service device sends message.
  • the first indication information is used to instruct the access client to assign message (frame) sending time for the access client by the first access service device after switching to the first working frequency band, instead of actively Send a message (frame) to the first access service device.
  • the first access service device may not send the first indication information to the access client.
  • the first message may further include: a handover indication.
  • the switching instruction is used to instruct the access client to switch to the first working frequency band.
  • the first message may further include: second indication information, where the second indication information is used to indicate that the access client is allowed to access the first access service device.
  • the access client can be explicitly indicated that the first access service device allows the access client to access the first access service device.
  • the default indication allows the access client to access the first access service device, and the second indication information can be based on Need to be omitted.
  • Step 808a the second access service device provides the access client with information about the first working frequency band, and instructs the access client to switch to the first working frequency band and enter a waiting state.
  • the access client receives the information of the first working frequency band from the second access service device.
  • the second access service device may include the information of the first working frequency band in the seventh message and send it to the access client.
  • the seventh message may be a band switch response (BandSwitchResponse) frame.
  • the band switch response (BandSwitchResponse) frame implicitly instructs the access client to switch to the first working frequency band and enter a waiting state.
  • the second access service device when it sends the information of the first working frequency band to the access client, it may also send the first indication information to the access client.
  • the first indication information may also be carried in the BandSwitchResponse frame, that is, the information of the first working frequency band and the first indication information are respectively used as a field in the BandSwitchResponse.
  • the first indication information and the information of the first working frequency band may be respectively carried in different messages and sent by the second access service device to the access client.
  • the information of the first working frequency band and the first indication information are carried in the seventh message.
  • the frequency band switching response may further include second indication information, where the second indication information is used to indicate that the access client is allowed to access the first access service device.
  • the method provided in the embodiment of the present application may further include: the first access service device sends time information of waiting timeout to the access client.
  • the waiting time-out time information is used to indicate the upper limit of time for the access client to enter the waiting state.
  • the waiting timeout time information may be sent to the access client on the first working frequency band after the first access service device determines that the access client switches to the first working frequency band of.
  • the waiting timeout time information may be that the first access service device transmits the first working frequency band to the access client through the second access service device, along with the first The information of the working frequency band is sent to the access client together.
  • the second access service device may carry the time information of waiting for timeout in the BandSwitchResponse frame, for example, use Bit1-Bit4 in Table 3 to indicate the time information of waiting for timeout.
  • the first access service device can omit The process of sending the first indication information by the access client is because if the access client receives the time information of the waiting timeout, it may enter the waiting state by default after switching to the first working frequency band.
  • the purpose of sending the waiting timeout time information to the access client is to make the access client no longer stay in the waiting state after reaching the upper limit of waiting. For example, the access client may actively send the first uplink message to the first access service device on the first working frequency band after reaching the waiting upper limit. Alternatively, the access client may try to access other access service devices except the first access service device after reaching the waiting upper limit.
  • the BandSwitchResponse frame is a newly defined Action frame type (new ID), which is used to feed back the BandSwitchRequest result (accept or reject) to the access client. If it is accept, the BandSwitchResponse frame Need to carry the channel number (channel number).
  • the information carried in the capabilities information (capabilities information) of the first access service device is shown in Table 4:
  • the value of Bit0 is 1, which indicates that the access client is assigned sending time by the AP in the first working frequency band. If the value of Bit0 is 0, it means that the AP does not allocate sending time for the access client in the first working frequency band.
  • Step 809a the access client switches from the second working frequency band of the second access service device to the first working frequency band, and enters a waiting state.
  • the method provided by the embodiment of the present application may also include: the access client removes the association with the second access service device, and the disassociation process may be switched to the first working frequency band by the access client It may be executed before or after the access client switches to the first working frequency band.
  • the de-association process may be: the access client sends a de-association request message to the second access service device through the second working frequency band, and the de-association request message is used to request de-association with the second access service device.
  • the second working frequency band is a frequency range of Wi-Fi signals communicated between the first access point client and the second access service device.
  • the second access service device may perform a subsequent action of disassociation with the access client, which is not limited in this embodiment of the present application.
  • the access client when the access client receives the first indication information, the access client enters a waiting state when switching to the first working frequency band according to the indication of the first indication information.
  • the access client In the case that the access client does not receive the first indication information, the access client enters the waiting state by default after switching to the first working frequency band.
  • the method provided in the embodiment of the present application may further include:
  • Step 810a within the first time range, the first access service device sends a second message to the access client through the first working frequency band, or, before the first time range arrives, the first access service device passes through the first working frequency band Send the third message to the access client.
  • the third message is used to instruct the access client to send the first uplink message to the first access service device through the first working frequency band within the first time range.
  • the third message includes the information of the first time range.
  • the second message is used to instruct the access client to send the first uplink message to the first access service device immediately or within a specified time or after a specified time.
  • the second message carries the first indication
  • the first indication is used to instruct the access client to send the first uplink message to the first access service device immediately or within a specified time or after a specified time.
  • the third message includes a second indication, which is used to instruct the access client to send the first uplink message to the first access service device through the first working frequency band within the first time range.
  • the second message and the third message may be regarded as trigger messages sent by the first access service device to the access client, and may also be regarded as: Trigger frames.
  • the Trigger frame guides the access client to reply to the relevant frames for accessing the first access service device, such as probe request message, identity authentication request message, association request message, etc., to complete the access client's access to the first access service device .
  • the Trigger frame is a control frame defined by 802.11ax.
  • Table 5 shows a format of the Trigger frame.
  • the trigger frame contains multiple subtypes, which provide many important functions in 802.11ax.
  • Table 5 and Table 6 list the specific subtypes corresponding to trigger frames in 802.11ax.
  • Frame control, duration (duration), RA and TA are Media Access Control (Media Access Control, MAC) header (header) of the Trigger frame.
  • RA and Ta are MAC addresses.
  • Frame check sequence used for error detection.
  • the duration indicates how long the frame and its acknowledgment frame will occupy the channel, and the duration value is used for Network Allocation Vector (NAV) calculation.
  • NAV Network Allocation Vector
  • MFP Management Frame Poll
  • the first An access service device may also send third indication information to the access client.
  • the third indication information is used to indicate the type of the first uplink message sent by the access client through the first working frequency band within the first time range.
  • the subsequent access client can send the first uplink message of the type indicated by the third indication information through the first working frequency band within the first time range according to the third indication information. For example, if the third indication information indicates that the type of the first uplink message to be sent is a probe request message, the access client sends the probe request message through the first working frequency band within the first time range.
  • the above-mentioned third indication information may be carried in the Trigger frame as Management Frame Poll, as shown in Table 7, which is a Trigger frame format provided by the embodiment of the present application.
  • the Trigger dependent user information in the user information field defines the type of management frame, and the type of management frame is shown in Table 8:
  • the AP can also adjust the transmit power of the 802.11ax terminal through the trigger frame.
  • the UL Target RSSI subfield in the trigger frame it marks the received power expected by the AP (the total power received through all antennas) in dBm. This power is also allocated according to RU, and each field allocated by RU has a corresponding UL Targer RSSI field.
  • the UL Target RSSI field uses a value of 0-90 to map -110dBm to -20dBm, and its value 127 represents that it is sent at the maximum power at that time.
  • Table 9 shows the frame format of trigger dependent user information field.
  • the third indication information is "0", it means that the first access service device expects the access client to send the probe request message through the first working frequency band within the first time range. If the third indication information is "1”, it means that the first access service device expects the access client to send the authentication request message through the first working frequency band within the initial time range. If the third indication information is "2”, it means that the first access service device expects the access client to send the association request message through the first working frequency band within the initial time range.
  • the value of the third indication information may be 2. If the first access service device obtains the probe request message of the access client from the second access service device, the value of the third indication information may be 1.
  • the first access service device may receive a TB-PPDU response message replied from the access client.
  • the TB-PPDU response message may also be called a TB-PPDU response frame.
  • the TB-PPDU response message carries probe request/authentication request/association request and other contents in the Data field. As shown in Table 10 below, the format of the TB-PPDU response message is shown in Table 10 below:
  • L-STF consists of 10 OFDM symbols (symbol) (1,0,1,0,1,0,1,0,1,0), each symbol is 0.8us, a total of 8us.
  • the length of Symbol is 1/4 of the normal length, so it is called Short training field, which is mainly used for fast signal detection, signal synchronization, automatic gain control, and receiving antenna selection (Diversity Selection).
  • the method provided in the embodiment of the present application may further include: the first access service device determines that the access client switches to the first working frequency band.
  • the access client will disassociate from the second access service device before switching to the first working frequency band or after switching to the first working frequency band. For example, the access client sends a disassociation request to the second access service device, and the second access service device determines to perform a disassociation process with the access client after receiving the disassociation request.
  • the second access service device may also send a notification message to the first access service device, so as to notify the first access service device that the access client switches to the first working frequency band.
  • the first access service device Before sending the second message or the third message, the first access service device can ensure that the second message or the third message sent on the first working frequency band can be accessed by determining that the access client switches to the first working frequency band received by the client.
  • step 810a can be regarded as an implementation manner of the above-mentioned step 501 .
  • the method provided in the embodiment of the present application may further include after step 810a:
  • Step 811a in response to the second message, the access client sends the first uplink message to the first access service device on the first working frequency band immediately or within or after a specified time. Or, in response to the third message, within the first time range, the access client sends the first uplink message to the first access service device on the first working frequency band.
  • the access client in the embodiment of the present application may carry the first uplink message in the trigger response frame (Trigger-Based physical layer (PHY) protocol data unit, TB-PPDU) message on the first working frequency band to the The first access service device sends.
  • the TB-PPDU message is mainly to respond to the Trigger message sent by the access service device.
  • step 811a may be implemented in the following manner: in response to the second message, the access client immediately or within a specified time or within a specified time according to the third indication information After that, the first uplink message is sent to the first access service device on the first working frequency band. Or, in response to the third message, within the first time range, the access client sends the first uplink message to the first access service device on the first working frequency band according to the third indication information.
  • the third indication information indicates that the type of the first uplink message sent is a detection request message, and in response to the second message, the access client immediately or within a specified time or after a specified time sends a message to the first uplink message on the first working frequency band.
  • An access service device sends a probe request message.
  • Step 812a within the first time range, the first access service device receives the first uplink message from the access client on the first working frequency band.
  • Step 813 the first access service device performs an access process with the access client according to the first uplink message.
  • step 501 may be implemented through step 807b and step 810b.
  • a method for controlling a device to send a message provided in the embodiment of the present application may further include after step 806:
  • Step 807b the first access service device sends a fourth message to the second access service device, and correspondingly, the second access service device receives the fourth message from the first access service device.
  • the fourth message is used to instruct the access client to switch to the first working frequency band, and to send the first uplink message to the first access service device through the first working frequency band within the initial time range.
  • the fourth message includes the information of the first working frequency band and the information of the time range of the first launch. It is worth noting that, if the fourth message includes information about the first time range, the access client can determine based on the information about the first time range that it needs to be in a waiting state on the first working frequency band when the first time range arrives.
  • the fourth message may further include first indication information, where the first indication information indicates that the access client enters a waiting state after switching to the first working frequency band. In this way, the access client can clearly determine to switch to the first working frequency band according to the first indication information and enter the waiting state.
  • step 807b is another implementation manner of step 501 .
  • FIG. 8A After the first access service device notifies the access client to switch to the first working frequency band through the second access service device, the first access service device A trigger message (such as a second message and a third message) is sent to the access client on a working frequency band.
  • the first access service device notifies the access client of the first working frequency band through the second access service device, and triggers the access client to report to the second working frequency band through the first working frequency
  • An access service device sends the first uplink message, that is, the information of the first working frequency band and the first time range are written in the same message, that is, the fourth message.
  • FIG. 8B can save signaling overhead.
  • Step 808b the second access service device sends an eighth message to the access client.
  • the access client receives the eighth message from the second access service device.
  • the eighth message is used to instruct the access client to switch to the first working frequency band, and to send the first uplink message to the first access service device through the first working frequency band within the first time range.
  • step 809b the access client switches to the first working frequency band and enters a waiting state.
  • the above eighth message may be a BandSwitchResponse message, and may also be called a BandSwitchResponse frame.
  • Table 12 shows the format of another BandSwitchResponse message provided by the embodiment of the present application.
  • AllowAPTrigger 1, it means that the first access service device allocates the first time range for the access client on the first working frequency band. In this way, for the access client, it can clearly enter the waiting state after switching to the first working frequency band. If the value of AllowAPTrigger is 2, it means that the first access service device does not allocate the first time range for the access client on the first working frequency band. In this way, for the access client, it can be clear that after switching to the first working frequency band, it can send the first uplink message to the first access service device without entering a waiting state.
  • the above-mentioned ProbeReqSendTick represents the information of the first time range.
  • the method provided in the embodiment of the present application may further include after step 809b:
  • Step 810b In response to the eighth message, the access client sends the first uplink message to the first access service device on the first working frequency band within the first time range.
  • Step 811b within the first time range, the first access service device receives the first uplink message from the access client on the first working frequency band.
  • Step 812b the first access service device performs an access process with the access client according to the first uplink message.
  • Case 2 The first access service device actively guides the access client to switch from the second access service device to the first access service device.
  • step 501 in the embodiment of the present application may be implemented in the following manner: the number of terminals accessing the second access service device is greater than or equal to the preset number threshold, The service load of the second access service device is greater than or equal to a preset load threshold, the access client is located within the coverage of the first access service device, and the distance between the access client and the first access service device If the distance is smaller than the distance between the access client and the second access service device, the access client needs to be allocated packet receiving time and/or packet sending time. Or, when the second access service device detects that the surrounding channel quality is lower than the preset channel quality threshold, the second access service device may trigger the first access service device to switch the access client from the second access service device to the first access service device.
  • steps 801 to 804 described above in FIG. 8A and FIG. 8B can be omitted.
  • step 501 provided by the embodiment of the present application can be implemented in the following manner: the first access service device can receive a fifth message from the access client on the first communication connection, where the fifth message is used to indicate The access client will access the first access service device through the Wi-Fi signal. Then the first access service device determines according to the fifth message that the access client will access the first access service device through the Wi-Fi signal.
  • the above step 501 may also be implemented in the following manner: the first access service device sends a first message to the access client over the first communication connection, so as to trigger the access client to switch to the first working frequency band. Afterwards, within the first time range, the first access service device sends the second message to the access client through the first working frequency band. The second message is used to instruct the access client to immediately send the first uplink message to the first access service device, or, before the first time range arrives, the first access service device sends an uplink message to the access client through the first working frequency band.
  • the third message is used to instruct the access client to send the first uplink message to the first access service device through the first working frequency band within the first time range.
  • the third message includes the information of the first time range.
  • the access client may determine, through the second message or the third message, to send the first uplink message to the first access service device through the first working frequency band within the first time range.
  • the foregoing step 501 may also be implemented in the following manner: the first access service device sends the fourth message to the access client over the first communication connection.
  • the access client receives the fourth message from the first access service device on the first communication connection, so as to determine to send the first uplink message to the first access service device through the first working frequency band within the first time range.
  • the access client can determine, through the fifth message, to send the first uplink message to the first access service device through the first working frequency band within the first time range.
  • each network element such as the first access service device, the second access service device, and the access client, includes a corresponding structure and/or software module for performing each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software in combination with the units and algorithm steps of each example described in the embodiments disclosed herein. Whether a certain function is executed by hardware or computer software drives hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.
  • the functional units of the first access service device, the second access service device, and the access client can be divided according to the above method example.
  • each functional unit can be divided corresponding to each function, or two or More than two functions are integrated in one processing unit.
  • the above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units. It should be noted that the division of units in the embodiment of the present application is schematic, and is only a logical function division, and there may be another division manner in actual implementation.
  • the method in the embodiment of the present application is described above with reference to FIG. 5 to FIG. 8B , and the communication device provided in the embodiment of the present application for performing the above method is described below. Those skilled in the art can understand that the method and the device can be combined and referred to each other, and the communication device provided in the embodiment of the present application can execute the first access service device, the second access service device, and the access client in the above method. step.
  • FIG. 9 shows the communication device involved in the above embodiment, and the communication device may include: a communication module 913 and a processing module 912 .
  • the communication device may further include a storage module 911, configured to store program codes and data of the communication device.
  • the communication device is the first access service device, or a chip applied to the first access service device.
  • the communication module 913 is used to support the communication device to communicate with external network elements (eg, access client).
  • the communication module 913 is configured to perform the signal transceiving operation of the first access service device in the above method embodiment.
  • the processing module 912 is configured to execute the signal processing operation of the first access service device in the foregoing method embodiments.
  • the processing module 912 is configured to execute the above embodiment to determine that the access client accesses the first access service device through a Wi-Fi signal and allocate the first working frequency band to the access client. and the starting time range of the process.
  • the communication module 913 is configured to support the communication device to execute step 501 in FIG. 5 .
  • the communication module 913 is configured to execute step 804 of FIG. A sending action performed by an access service device.
  • the processing module 912 is configured to support the communication device to execute step 805, step 806 and step 813 in FIG. 8A.
  • the communication module 913 is used to execute step 804 of FIG. A sending action performed by an access service device.
  • the processing module 912 is configured to support the communication device to execute step 805, step 806 and step 812b in FIG. 8B.
  • the communication device is an access client, or a chip applied to the access client.
  • the communication module 913 is used to support the communication device to communicate with external network elements (for example, the first access service device or the second access service device).
  • the communication module 913 is configured to perform the signal transceiving operation of the access client in the above method embodiments.
  • the processing module 912 is configured to perform the signal processing operation of the access client in the above method embodiments.
  • the communication module 913 is configured to perform the receiving action performed by the access client in step 502 in FIG. 5 of the above embodiment.
  • the communication module 913 is configured to perform the receiving action performed by the access client in step 801, step 808a, and step 810a of FIG. 8A in the above embodiment.
  • the communication module 913 is further configured to execute the sending action performed by the access client in step 802 and step 811a of FIG. 8A in the above embodiment.
  • the processing module 912 is configured to execute step 809a in FIG. 8A of the above-mentioned embodiment.
  • the communication module 913 is configured to perform the receiving action performed by the access client in step 801 and step 808b of FIG. 8B in the above embodiment.
  • the communication module 913 is further configured to execute the sending action performed by the access client in step 802 and step 810b of FIG. 8A in the above embodiment.
  • the processing module 912 is configured to execute step 809b in FIG. 8B of the above-mentioned embodiment.
  • the processing module 912 may be a processor or a controller, such as a central processing unit, a general 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 can implement or execute the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor can also be a combination of computing functions, for example, a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like.
  • the communication module may be a transceiver, a transceiver circuit, or a communication interface.
  • the storage module may be a memory.
  • FIG. 10 shows the communication device involved in the above embodiments, and the communication device may include: a communication unit 1013 and a processing unit 1012 .
  • the communication device may further include a storage unit 1011, configured to store program codes and data of the communication device.
  • the communication device is the first access service device, or a chip applied to the first access service device.
  • the communication unit 1013 is used to support the communication device to communicate with an external network element (eg, an access client).
  • the communication unit 1013 is configured to perform the signal transceiving operation of the first access service device in the above method embodiment.
  • the processing unit 1012 is configured to execute the signal processing operation of the first access service device in the above method embodiment.
  • the communication unit 1013 is configured to support the communication device to execute step 501 in FIG. 5 .
  • the processing unit 1012 is configured to execute the above-mentioned process of determining that an access client accesses the first access service device through a Wi-Fi signal and allocating a first working frequency band and a first launch time range to the access client.
  • the communication unit 1013 is configured to perform step 804 in FIG. A sending action performed by an access service device.
  • the processing unit 1012 is configured to support the communication device to execute step 805, step 806 and step 813 in FIG. 8A.
  • the processing unit 1012 is configured to execute step 804 of FIG. A sending action performed by an access service device.
  • the processing unit 1012 is configured to support the communication device to execute step 805, step 806 and step 812b in FIG. 8B.
  • the communication device is an access client, or a chip applied to the access client.
  • the communication unit 1013 is used to support the communication device to communicate with external network elements (for example, the first access service device or the second access service device).
  • the communication unit 1013 is configured to perform the signal transceiving operation of the access client in the above method embodiments.
  • the processing unit 1012 is configured to perform signal processing operations for accessing the client in the above method embodiments.
  • the communication unit 1013 is configured to perform the receiving action performed by the access client in step 502 in FIG. 5 of the above embodiment.
  • the communication unit 1013 is configured to perform the receiving action performed by the access client in step 801, step 808a, and step 810a of FIG. 8A in the above embodiment.
  • the communication unit 1013 is further configured to execute the sending action performed by the access client in step 802 and step 811a of FIG. 8A in the above embodiment.
  • the processing unit 1012 is configured to execute step 809a in FIG. 8A of the above embodiment.
  • the communication unit 1013 is configured to perform the receiving action performed by the access client in step 801 and step 808b of FIG. 8B in the above embodiment.
  • the communication unit 1013 is further configured to perform the sending action performed by the access client in step 802 and step 810b of FIG. 8A in the above embodiment.
  • the processing unit 1012 is configured to execute step 809b in FIG. 8B of the above-mentioned embodiment.
  • the foregoing processing unit 1012 or processing module 912 may be integrated in the processor 401 and/or the processor 405 .
  • the storage unit 1011 or the storage module 911 may be integrated in the memory 402 .
  • the communication unit 1013 or the communication module 913 can be integrated in the communication interface 403 .
  • FIG. 11 is a schematic structural diagram of a chip 110 provided by an embodiment of the present application.
  • the chip 110 includes one or more than two (including two) processors 1110 and a communication interface 1130 .
  • the chip 110 further includes a memory 1140 , which may include a read-only memory and a random access memory, and provides operation instructions and data to the processor 1110 .
  • a part of the memory 1140 may also include a non-volatile random access memory (non-volatile random access memory, NVRAM).
  • the memory 1140 stores the following elements, execution modules or data structures, or their subsets, or their extended sets.
  • the corresponding operation is executed by calling the operation instruction stored in the memory 1140 (the operation instruction may be stored in the operating system).
  • the structures of the first access service device and the access client are similar, and different devices may use different chips to realize their respective functions.
  • the processor 1110 controls the processing operation of any one of the first access service device and the access client, and the processor 1110 may also be called a central processing unit (central processing unit, CPU).
  • CPU central processing unit
  • the memory 1140 may include read-only memory and random-access memory, and provides instructions and data to the processor 1110 .
  • a portion of memory 1140 may also include NVRAM.
  • the memory 1140, the communication interface 1130, and the memory 1140 are coupled together through the bus system 1120, where the bus system 1120 may include a power bus, a control bus, and a status signal bus in addition to a data bus.
  • the various buses are labeled as bus system 1120 in FIG. 11 for clarity of illustration.
  • the methods disclosed in the foregoing embodiments of the present application may be applied to the processor 1110 or implemented by the processor 1110 .
  • the processor 1110 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above method may be implemented by an integrated logic circuit of hardware in the processor 1110 or instructions in the form of software.
  • the above-mentioned processor 1110 may be a general-purpose processor, a digital signal processor (digital signal processing, DSP), an ASIC, an off-the-shelf programmable gate array (field-programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistors Logic devices, discrete hardware components.
  • DSP digital signal processing
  • ASIC application-the-shelf programmable gate array
  • FPGA field-programmable gate array
  • Various methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed.
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • the steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register.
  • the storage medium is located in the memory 1140, and the processor 1110 reads the information in the memory 1140, and completes the steps of the above method in combination with its hardware.
  • the communication interface 1130 is used to perform the receiving and sending steps of the first access service device in the embodiments shown in FIG. 5 to FIG. 8B .
  • the processor 1110 is configured to execute the processing steps of the first access service device in the embodiment shown in FIG. 5 to FIG. 8B .
  • the communication interface 1130 is used to perform the receiving and sending steps of the access client in the embodiment shown in FIG. 5 to FIG. 8B .
  • the processor 1110 is configured to execute the processing steps of accessing the client in the embodiments shown in Figs. 5 to 8B.
  • the above communication module may be a communication interface of the device for receiving signals from other devices.
  • the communication module is a communication interface used by the chip to receive or send signals from other chips or devices.
  • a computer-readable storage medium is provided. Instructions are stored in the computer-readable storage medium. When the instructions are executed, the functions performed by the first access service device as shown in FIGS. 5 to 8B are implemented.
  • a computer-readable storage medium is provided. Instructions are stored in the computer-readable storage medium. When the instructions are executed, the functions executed by the access client as shown in FIG. 5 to FIG. 8B are implemented.
  • a computer program product including instructions.
  • the computer program product includes instructions. When the instructions are executed, the functions performed by the first access service device as shown in FIGS. 5 to 8B are realized.
  • a computer program product including instructions, and the computer program product includes instructions.
  • the instructions When the instructions are executed, the functions performed by the access client as shown in FIGS. 5 to 8B are realized.
  • a chip is provided, the chip is used in the first access service device, the chip includes at least one processor and a communication interface, the communication interface is coupled to at least one processor, and the processor is used to run instructions, so as to realize the ⁇ Functions performed by the first access service device in FIG. 8B.
  • a chip is provided, the chip is applied in a first electronic device, the chip includes at least one processor and a communication interface, the communication interface is coupled to at least one processor, and the processor is used to run instructions, so as to realize the Functions performed by the access client in 8B.
  • An embodiment of the present application provides a communication system, and the communication system includes: an access client and a first access device.
  • the first access device is used to perform the functions performed by the first access device as shown in Figures 5 to 8B
  • the access client is used to perform the functions performed by the access client as shown in Figures 5 to 8B
  • the communication system may further include a second access device, where the second access device is configured to implement the functions performed by the second access service device in FIGS. 7 to 8B .
  • all or part of them may be implemented by software, hardware, firmware or any combination thereof.
  • software When implemented using software, it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product comprises one or more computer programs or instructions. When the computer program or instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are executed in whole or in part.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, network equipment, user equipment, or other programmable devices.
  • the computer program or instructions can be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program or instructions can be downloaded from a website, computer, A server or data center transmits to another website site, computer, server or data center by wired or wireless means.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrating one or more available media. Described usable medium can be magnetic medium, for example, floppy disk, hard disk, magnetic tape; It can also be optical medium, for example, digital video disc (digital video disc, DVD); It can also be semiconductor medium, for example, solid state drive (solid state drive) , SSD).

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Abstract

本申请提供一种控制设备发送消息的方法、装置及系统，涉及终端技术领域，该方法在接入客户端未接入接入服务设备之前，由接入服务设备触发接入客户端在接入服务设备确定的首发时间范围内发送首次上行消息，能够有效避免接入客户端对接入服务设备与其他接入客户端的通信带来的干扰。该方案包括：接入客户端接入第一接入服务设备之前，第一接入服务设备触发接入客户端在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息，首次上行消息为所述接入客户端为接入所述第一接入服务设备而向所述第一接入服务设备发送的第一条消息。

Description

一种控制设备发送消息的方法、装置及系统
本申请要求于2021年6月25日提交中国国家知识产权局、申请号202110716214.9、申请名称为“一种控制设备发送消息的方法、装置及系统”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
本申请涉及终端技术领域，尤其涉及一种控制设备发送消息的方法、装置及系统。
背景技术
无线保真(Wireless-Fidelity，Wi-Fi)技术使用共享的信道资源，导致信号的干扰和冲突的问题比较严重。电气电子工程师协会(Institute of Electrical and Electronics Engineers，IEEE)802.11X标准采用带冲突避免的载波侦听多路访问(carrier sense multiple access with collision avoidance，CSMA/CA)竞争机制，允许接入点(access point，AP)和站点(station，STA)公平竞争空中接口资源，使用物理和虚拟载波监听技术，可以有效减少AP和STA之间的发送冲突。但是，随着STA数目的增加，需要选择更大的增强分布式信道接入(Enhanced distributed channel access，EDCA)退避窗口参数，这样的机制导致吞吐量下降非常明显。比如，如图1A所示，图1A为STA数量和吞吐量(throughput)之间的曲线示意图，在50个STA并发工作时，会导致30％以上的吞吐量下降。同时由于AP和STA同时竞争空中接口资源，可能会使得高优先级的报文不能得到及时发送，导致时延增大甚至产生丢包现象。
因此，为了有效提高吞吐量和降低时延，相关技术还推出了一种“集中控制”机制：一个AP可以为已接入该AP的每个STA分配报文发送时间范围和报文接收时间范围，AP和STA不再公平竞争空中接口资源。但是，这样的机制也存在问题：对于未接入一个AP的一个STA，该AP无法为该STA分配报文发送时间范围，也无从获知该STA的具体接入时间。如果该STA主动向该AP上报探测请求(probe request)消息，则会给该AP的集中控制机制带来影响，例如一旦STA发送探测请求消息的时间范围与该AP为其他STA分配的报文发送时间范围或报文接收时间范围重叠，则STA所发送的探测请求消息会对该AP与其他STA之间的通信造成严重干扰。
因此，亟需一种新的STA接入AP的方式，避免上述干扰的发生。
发明内容
本申请实施例提供一种控制设备发送消息的方法、装置及系统，该方法在接入客户端未接入接入服务设备之前，由接入服务设备触发接入客户端在接入服务设备确定的首发时间范围内发送首次上行消息，能够有效避免接入客户端对接入服务设备与其他接入客户端的通信带来的干扰。
本申请实施例提供如下技术方案：
第一方面，本申请实施例提供一种控制设备发送消息的方法，应用于第一接入服务设备，该方案包括：在接入客户端接入第一接入服务设备之前，第一接入服务设备触发接入客户端在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息。首次上行消息为接入客户端为接入所述第一接入服务设备而向所述第一接入服务设备发送的第一条消息。其中，第一工作频段为用于在第一接入服务设备与接入客户端之间进行通信的无线保真信号的频率范围。首发时间范围为接入客户端为接入第一接入服务设备而向第一接入服务设备发送首次上行消息的时间范围。
本申请实施例提供一种控制设备发送消息的方法，该方法中在接入客户端接入第一接入服务设备之前，由第一接入服务设备触发接入客户端在第一接入服务设备允许的首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息，避免了接入客户端在未接入第一接入服务设备之前主动向第一接入服务设备发送首次上行消息的情况发生，从而避免了接入客户端所发送的首次上行消息对第一接入服务设备与其他接入客户端之间的通信带来的干扰。
值得说明的是，在接入客户端接入第一接入服务设备之前，虽然接入客户端可以在第一工作频段上和第一接入服务设备通信，这时表示接入客户端能够和第一接入服务设备在第一工作频段上交互消息，但是由于接入客户端并未接入第一接入服务设备，此时接入客户端并不能通过该第一接入服务设备访问网络。
在本申请的一种可能的实现中，第一接入服务设备在第一工作频段采用集中控制，这样可以有效改善吞吐和时延。
在本申请的一种可能的实现中，第一接入服务设备触发接入客户端在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息之前，本申请实施例提供的方法还包括：第一接入服务设备确定接入客户端将通过无线保真信号接入第一接入服务设备。
在本申请的一种可能的实现中，第一接入服务设备触发接入客户端在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息之前，本申请实施例提供的方法还包括：第一接入服务设备为接入客户端分配第一工作频段和首发时间范围。这样可以实现第一接入服务设备根据自身的情况尽量为接入客户端分配避免产生干扰的时间范围。通过第一接入服务设备向接入客户端分配首发时间范围可以实现第一接入服务设备的集中控制。
在本申请的一种可能的实现中，首发时间范围与第一接入服务设备为其他接入客户端分配的报文接收时间和报文发送时间不重叠。由于时间范围不重叠，因此可以避免产生冲突。
在本申请的一种可能的实现中，在第一接入服务设备触发接入客户端在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息之前，接入客户端已经接入第二接入服务设备，第一接入服务设备确定接入客户端将通过无线保真信号接入第一接入服务设备，包括：第一接入服务设备接收来自第二接入服务设备的第五消息。第一接入服务设备根据第五消息，确定接入客户端将通过无线保真信号接入第一接入服务设备。
在本申请的一种可能的实现中，在第一接入服务设备触发接入客户端在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息之前，接入客户端通过第一通信连接与第一接入服务设备通信，第一通信连接为接入客户端通过除无线保真信号外的通信方式与第一接入服务设备建立的通信连接，第一接入服务设备确定接入客户端将通过无线保真信号接入第一接入服务设备，包括：第一接入服务设备在第一通信连接上接收来自接入客户端的第五消息。第一接入服务设备根据第五消息确定接入客户端将通过无线保真信号接入第一接入服务设备。
在本申请的一种可能的实现中，第五消息包括接入客户端的信息以及第二指示信息。第二指示信息用于指示接入客户端将通过无线保真信号接入第一接入服务设备。这样便于第一接入服务设备根据第二指示信息确定接入客户端将通过无线保真信号接入第一接入服务设备，以及根据接入客户端的信息确定将通过无线保真信号接入第一接入服务设备的接入客户端是哪一个。
在本申请的一种可能的实现中，第五消息包括以下信息中的一个或多个：接入客户端自身支持的工作频段和期望的时间范围。相应的，第一接入服务设备在为接入客户端确定首发时间范围时，可以参考期望的时间范围。比如，首发时间范围包括期望的时间范围。或者首发时间范围由期望的时间范围和第一接入服务设备为其他接入客户端分配的报文接收时间范围和/或报文发送时间范围共同确定。相应的，第一接入服务设备在为接入客户端确定第一工作频段时可以参考接入客户端自身支持的工作频段。比如，第一接入服务设备为接入客户端分配的第一工作频段属于接入客户端自身支持的工作频段。通过向第一接入服务设备提供接入客户端自身支持的工作频段和期望的时间范围中的一个或多个，这样可以使得第一接入服务设备为接入客户端分配的第一工作频段以及首发时间范围符合接入客户端的需求。
在本申请的一种可能的实现中，接入客户端已经接入第二接入服务设备，第一接入服务设备触发接入客户端在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息之前，本申请实施例提供的方法还包括：第一接入服务设备向第二接入服务设备发送用于指示接入客户端切换到第一工作频段后进入等待状态的第一消息。第一接入服务设备触发接入客户端在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息，包括：在首发时间范围内，第一接入服务设备通过第一工作频段向接入客户端发送用于指示接入客户端立即向第一接入服务设备发送首次上行消息的第二消息。或者，第一接入服务设备触发接入客户端在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息，包括：在首发时间范围到来之前，第一接入服务设备通过第一工作频段向接入客户端发送第三消息。该第三消息用于指示接入客户端在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息。第三消息中包括首发时间范围的信息。该方案可以实现第一接入服务设备通过第二接入服务设备先向接入客户端通知第一工作频段的信息，以及切换到第一工作频段后进入等待状态。之后，第一接入服务设备便可以在第一工作频段与接入客户端交互消息。
在本申请的一种可能的实现中，第一消息包含第一工作频段的信息以及第一指示信息，第一指示信息指示接入客户端切换到第一工作频段后进入等待状态。
在本申请的一种可能的实现中，第一工作频段和首发时间范围由第一接入服务设备为接入客户端分配。
在本申请的一种可能的实现中，第一工作频段和首发时间范围由第一接入服务设备和接入客户端协商确定。
在本申请的一种可能的实现中，在首发时间范围内，第一接入服务设备通过第一工作频段向接入客户端发送第二消息之前，或者，在首发时间范围到来之前，第一接入服务设备通过第一工作频段向接入客户端发送第二消息之前，本申请实施例提供的方法还包括：第一接入服务设备确定接入客户端切换到第一工作频段。这样可以避免第一接入服务设备不知晓接入客户端是否切换到第一工作频段，而盲目的在第一工作频段上发送第二消息/第三消息，造成接入客户端接收失败的情况发生。此外，第一接入服务设备确定接入客户端切换到第一工作频段之后再发送第二消息/第三消息，可以提高接入客户端成功接收第二消息/第三消息的概率。
在本申请的一种可能的实现中，第一接入服务设备确定接入客户端切换到第一工作频段，包括：第一接入服务设备接收来自第二接入服务设备的通知消息。该通知消息用于指示接入客户端已切换到第一工作频段。第一接入服务设备根据通知消息确定接入客户端切换到工作频段。该方案可以实现第一接入服务设备从第二接入服务设备处获取接入客户端已切换到第一工作频段。
在本申请的一种可能的实现中，接入客户端已经接入第二接入服务设备，第一接入服务设备触发接入客户端在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息，包括：第一接入服务设备向第二接入服务设备发送第四消息。该第四消息用于指示接入客户端切换到第一工作频段，并在首发时间范围内通过第一工作频段向第一接入服务设备发送首次上行消息。
在本申请的一种可能的实现中，第四消息包含第一工作频段的信息以及首发时间范围的信息。
在本申请的一种可能的实现中，第四消息还包含第一指示信息，第一指示信息指示接入客户端切换到第一工作频段后进入等待状态。通过发送第一指示信息使得接入客户端可以明确在切换到第一工作频段后需要进入等待状态，即不主动向第一接入服务设备发送上行消息。
在本申请的一种可能的实现中，本申请实施例提供方法还包括：第一接入服务设备向接入点客户端发送用于指示接入客户端进入等待状态的时间上限的等待超时的时间信息。便于接入客户端明确在超过时间上限后不再处于等待状态，可以尝试接入其他接入服务设备。
比如说，等待超时的时间信息可以在接入客户端切换到第一工作频段后，由第一接入服务设备在第一工作频段上向接入客户端发送，或者等待超时的时间信息可以是接入客户端切换到第一工作频段之前，由第一接入服务设备通过第二接入服务设备或者第一通信连接向接入客户端发送。
在本申请的一种可能的实现中，本申请实施例提供方法还包括：第一接入服务设备在首发时间范围通过第一工作频段接收来自接入客户端的首发上行消息。首发上行消息 用于请求通过Wi-Fi信号接入第一接入服务设备。第一接入服务设备根据首发上行消息执行接入客户端接入第一接入服务设备的过程。该方案可以实现接入客户端在第一接入服务设备允许的首发时间范围内接入第一接入服务设备。
在本申请的一种可能的实现中，本申请实施例提供方法还包括：第一接入服务设备向接入客户端发送用于指示接入客户端在第一工作频段上向第一接入服务设备发送的首发上行消息的类型的第三指示信息。通过提供第三指示信息使得接入客户端后续在首发时间范围，可以根据第三指示信息指示的类型向第一接入服务设备发送首发上行消息。
值得说明的是，第三指示信息可以作为一个字段携带在上述第四消息中，或者第二消息或者第三消息中。或者第三指示信息可以携带在除第二消息、第三消息或者第四消息以外的消息中，发送给接入客户端，本申请实施例对此不做限定。
在本申请的一种可能的实现中，首发上行消息包括以下中的一个或多个：探测请求消息、验证请求消息、关联请求消息。
在本申请的一种可能的实现中，第一接入服务设备触发接入客户端在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息之前，所述方法还包括：第一接入服务设备通过第一通信连接向接入客户端发送第一消息，所述第一消息用于指示所述接入客户端切换到所述第一工作频段后进入等待状态，所述第一消息包含所述第一工作频段的信息；所述第一接入服务设备触发所述接入客户端在所述首发时间范围通过所述第一工作频段向所述第一接入服务设备发送所述首次上行消息，包括：在所述首发时间范围内，所述第一接入服务设备通过所述第一工作频段向所述接入客户端发送第二消息，所述第二消息用于指示所述接入客户端立即向所述第一接入服务设备发送所述首次上行消息，或者，在所述首发时间范围到来之前，所述第一接入服务设备通过所述第一工作频段向所述接入客户端发送第三消息，所述第三消息用于指示所述接入客户端在所述首发时间范围通过所述第一工作频段向所述第一接入服务设备发送所述首次上行消息，所述第三消息中包括所述首发时间范围的信息。
在本申请的一种可能的实现中，第一接入服务设备触发接入客户端在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息，包括：第一接入服务设备通过第一通信连接向接入客户端发送第四消息，第四消息用于指示所述接入客户端切换到所述第一工作频段，并在所述首发时间范围内通过所述第一工作频段向所述第一接入服务设备发送所述首次上行消息，所述第四消息包含所述第一工作频段的信息以及所述首发时间范围的信息。
在本申请的一种可能的实现中，第一接入服务设备为接入客户端分配第一工作频段和首发时间范围之前，本申请实施例提供的方法还包括：在满足预设条件的情况下，第一接入服务设备确定允许接入客户端接入第一接入服务设备，预设条件包括以下信息中的一个或多个：接入第二接入服务设备的终端数量大于或等于预设数量阈值、第二接入服务设备的业务负载大于或等于预设负载阈值、接入客户端位于第一接入服务设备的覆盖范围内，且接入客户端与第一接入服务设备之间的距离小于接入客户端与第二接入服务设备之间的距离、接入客户端需要被分配发送和/或接收消息的时间信息。
在本申请的一种可能的实现中，接入客户端支持多频多通道模式MBMC或多频单通 道模式MBSC。
在本申请的一种可能的实现中，在第一接入服务设备确定接入客户端将通过无线保真信号接入第一接入服务设备之后，本申请实施例提供的方法还包括：在不允许接入客户端接入第一接入服务设备的情况下，本申请实施例提供的方法还包括：第一接入服务设备向第二接入服务设备发送触发消息或者通过接入客户端与第一接入服务设备之间具有的第一通信连接向接入客户端发送触发消息。其中，触发消息用于指示不允许接入客户端接入第一接入服务设备。
可选的，触发消息中携带拒绝接入指示，该拒绝接入指示用于指示不允许接入客户端接入第一接入服务设备。
在本申请的一种可能的实现中，第一接入服务设备和所述第二接入服务设备工作在不同的频段，通过同一个接入控制器AC交互和控制；或者，所述第一接入服务设备和所述第二接入服务设备可以是支持MBMC的一个硬件实体，所述第一接入服务设备和所述第二接入服务设备分别负责不同频段的接入。第一接入服务设备不广播第一接入服务设备的SSID，第二接入服务设备广播第二接入服务设备的SSID。本申请实施例中第一接入服务设备不广播第一接入服务设备的SSID，这样接入客户端便不会知晓第一接入服务设备的SSID，可以避免接入客户端主动尝试接入第一接入服务设备。
第二方面，本申请实施例提供一种控制设备发送消息的方法，应用于接入客户端中，该方法包括：接入客户端接入第一接入服务设备之前，基于第一接入服务设备的触发在首发时间范围通过第一工作频段向所述第一接入服务设备发送首次上行消息，其中，所述第一工作频段为用于在所述接入客户端与所述第一接入服务设备之间进行通信的无线保真信号的频率范围，所述首次上行消息为所述接入客户端为接入所述第一接入服务设备而向所述第一接入服务设备发送的第一条消息。
在本申请的一种可能的实现中，接入客户端基于第一接入服务设备的触发之前，所述接入客户端已经接入第二接入服务设备，所述接入客户端基于第一接入服务设备的触发在首发时间范围通过第一工作频段向所述第一接入服务设备发送首次上行消息之前，本申请实施例提供的方法还包括：所述接入客户端接收来自所述第二接入服务设备的第七消息，所述第七消息用于指示所述接入客户端切换到所述第一工作频段后进入等待状态，所述第七消息包含所述第一工作频段的信息；响应于所述第七消息，所述接入客户端切换到所述第一工作频段，并进入等待状态。
在本申请的一种可能的实现中，响应于所述第七消息，所述接入客户端切换到所述第一工作频段，并进入等待状态之后，本申请实施例提供的方法还包括：在所述首发时间范围内，所述接入客户端在所述第一工作频段接收来自所述第一接入服务设备的第二消息，所述第二消息用于指示所述接入客户端立即向所述第一接入服务设备发送所述首次上行消息，或者，所述接入客户端在所述第一工作频段接收来自所述第一接入服务设备的第三消息，所述第三消息用于指示所述接入客户端在所述首发时间范围通过所述第一工作频段向所述第一接入服务设备发送所述首次上行消息，所述第三消息包括所述首发时间范围的信息。
在本申请的一种可能的实现中，第七消息还包括第一指示信息，所述第一指示信息指示所述接入客户端切换到所述第一工作频段后进入等待状态。
在本申请的一种可能的实现中，接入客户端基于第一接入服务设备的触发之前，所述接入客户端已经接入第二接入服务设备，所述接入客户端基于第一接入服务设备的触发在首发时间范围通过第一工作频段向所述第一接入服务设备发送首次上行消息之前，本申请实施例提供的还包括：接入客户端从所述第二接入服务设备处获取第七消息，所述第七消息用于指示所述接入客户端切换到所述第一工作频段，并在所述首发时间范围内通过所述第一工作频段向所述第一接入服务设备发送所述首次上行消息；所述第七消息包含所述第一工作频段的信息以及所述首发时间范围的信息。
在本申请的一种可能的实现中，第七消息还包含第一指示信息，所述第一指示信息指示所述接入客户端切换到所述第一工作频段后进入等待状态。
在本申请的一种可能的实现中，本申请实施例提供的方法还包括：接入客户端接收来自所述第一接入服务设备的发送等待超时的时间信息，所述等待超时的时间信息用于指示所述接入客户端进入等待状态的时间上限。
在本申请的一种可能的实现中，本申请实施例提供的方法还包括：接入客户端获取第三指示信息，所述第三指示信息用于指示所述第一接入服务设备希望所述接入客户端在所述第一工作频段上向所述第一接入服务设备发送的所述首发上行消息的类型。接入客户端基于第一接入服务设备的触发在首发时间范围通过第一工作频段向所述第一接入服务设备发送首次上行消息，包括：在所述首发时间范围，所述接入客户端根据所述第三指示信息通过所述第一工作频段向所述第一接入服务设备发送所述首发上行消息。
在本申请的一种可能的实现中，接入客户端基于第一接入服务设备的触发之前，所述接入客户端已经接入第二接入服务设备，所述接入客户端基于第一接入服务设备的触发在首发时间范围通过第一工作频段向所述第一接入服务设备发送首次上行消息之前，本申请实施例提供的方法还包括：所述接入客户端向所述第二接入服务设备发送第五消息，所述第五消息用于表示所述接入客户端请求通过无线保真信号接入所述第一接入服务设备。
在本申请的一种可能的实现中，接入客户端向所述第二接入服务设备发送的第五消息还包括：接入客户端向所述第二接入服务设备发送关联标识，所述关联标识用于表示所述接入客户端已接入所述第二接入服务设备。
在本申请的一种可能的实现中，接入客户端通过第一通信连接与所述第一接入服务设备通信，所述第一通信连接为所述接入客户端通过除无线保真信号外的方式与所述第一接入服务设备建立的连接，所述接入客户端基于第一接入服务设备的触发在首发时间范围通过第一工作频段向所述第一接入服务设备发送首次上行消息之前，本申请实施例提供的方法还包括：所述接入客户端在所述第一通信连接向所述第一接入服务设备上发送第五消息，所述第五消息用于表示所述接入客户端将通过无线保真信号接入所述第一接入服务设备。
在本申请的一种可能的实现中，第五消息包括以下信息中的一个或多个：第二指示信息、所述接入客户端自身支持的工作频段、期望的时间范围，所述第二指示信息用于指示所述接入客户端将通过无线保真信号接入所述第一接入服务设备。
在本申请的一种可能的实现中，接入客户端基于第一接入服务设备的触发在首发时间范围通过第一工作频段向所述第一接入服务设备发送首次上行消息之前，本申请实施例提供的方法还包括：接入客户端通过第一通信连接接收来自第一接入服务设备的第一消息，所 述第一消息用于指示所述接入客户端切换到所述第一工作频段后进入等待状态，所述第一消息包含所述第一工作频段的信息；响应于第一消息，该接入客户端切换到所述第一工作频段后进入等待状态。接入客户端通过第一工作频段接收来自第一接入服务设备的第二消息，所述第二消息用于指示所述接入客户端立即向所述第一接入服务设备发送所述首次上行消息，相应的，接入客户端基于第一接入服务设备的触发在首发时间范围通过第一工作频段向所述第一接入服务设备发送首次上行消息，包括：响应于第二消息，接入客户端立即在第一工作频段上向第一接入服务设备发送所述首次上行消息。
在本申请的一种可能的实现中，接入客户端基于第一接入服务设备的触发在首发时间范围通过第一工作频段向所述第一接入服务设备发送首次上行消息之前，本申请实施例提供的方法还包括：接入客户端通过第一通信连接接收来自第一接入服务设备的第一消息，所述第一消息用于指示所述接入客户端切换到所述第一工作频段后进入等待状态，所述第一消息包含所述第一工作频段的信息；响应于第一消息，该接入客户端切换到所述第一工作频段后进入等待状态。接入客户端通过第一工作频段接收来自第一接入服务设备的第三消息，所述第三消息中包括所述首发时间范围的信息，所述第三消息用于指示所述接入客户端在所述首发时间范围通过所述第一工作频段向所述第一接入服务设备发送所述首次上行消息，相应的，接入客户端基于第一接入服务设备的触发在首发时间范围通过第一工作频段向所述第一接入服务设备发送首次上行消息，包括：响应于第三消息，接入客户端在首发时间范围内通过第一工作频段向第一接入服务设备发送所述首次上行消息。
在本申请的一种可能的实现中，接入客户端基于第一接入服务设备的触发在首发时间范围通过第一工作频段向所述第一接入服务设备发送首次上行消息之前，本申请实施例提供的方法包括：接入客户端通过第一通信连接接收来自第一接入服务设备的第四消息，第四消息用于指示所述接入客户端切换到所述第一工作频段，并在所述首发时间范围内通过所述第一工作频段向所述第一接入服务设备发送所述首次上行消息，所述第四消息包含所述第一工作频段的信息以及所述首发时间范围的信息。相应的，接入客户端基于第一接入服务设备的触发在首发时间范围通过第一工作频段向所述第一接入服务设备发送首次上行消息，包括：响应于第四消息，接入客户端在首发时间范围内通过第一工作频段向第一接入服务设备发送所述首次上行消息。
在本申请的一种可能的实现中，接入客户端切换到第一工作频段后在首发时间范围到来之前进入等待状态。
在本申请的一种可能的实现中，第一工作频段和首发时间范围由第一接入服务设备为接入客户端分配。
在本申请的一种可能的实现中，第一工作频段和首发时间范围由第一接入服务设备和接入客户端协商确定。
在本申请的一种可能的实现中，接入客户端向第二接入服务设备发送的第五消息之前，还可以包括：接入客户端从第二接入服务设备处获取关联标识。比如说，接入客户端可以在接入第二接入服务设备的过程中从第二接入服务设备处获取关联标识。
第三方面，本申请实施例提供一种控制设备发送消息的方法，该方法应用于第二接入服务设备中，该方法包括：第二接入服务设备为已接入该第二接入服务设备的接入客户 端分配关联标识。该关联标识用于表示接入客户端已接入第二接入服务设备。第二接入服务设备向接入客户端发送关联标识。
在本申请的一种可能的实现中，本申请实施例提供的方法还包括：第二接入服务设备接收来自接入客户端的第五消息，该第五消息用于表示接入客户端将通过无线保真信号接入第一接入服务设备。第二接入服务设备处理第五消息，得到第一消息，并向第一接入服务设备发送第一消息，该第一消息表示接入客户端将通过无线保真信号接入第一接入服务设备。
在本申请的一种可能的实现中，第二接入服务设备向第一接入服务设备发送第一消息还包括：第二接入服务设备向第一接入服务设备发送该接入客户端对应的探测请求消息，或者，发送探测请求消息、身份认证请求消息。
在本申请的一个可能的实现中，第五消息中包括关联标识。这样第二接入服务设备根据关联标识确定接入客户端已接入第二接入服务设备，则响应于第五消息，第二接入服务设备向第一接入服务设备发送第一消息。
在本申请的一种可能的实现中，第二接入服务设备向接入客户端发送关联标识，包括：在接入客户端接入第二接入服务设备的过程中，第二接入服务设备向接入客户端发送关联标识。
在本申请的一种可能的实现中，第二接入服务设备向接入客户端发送关联标识，包括：在接入客户端接入第二接入服务设备之后，第二接入服务设备向接入客户端发送关联标识。
第四方面，本申请实施例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程序或指令，当计算机程序或指令在计算机上运行时，使得计算机执行如第一方面至第一方面的任意一种可能的实现方式中描述的一种控制设备发送消息的方法。该计算机可以为第一接入服务设备。
第五方面，本申请实施例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程序或指令，当计算机程序或指令在计算机上运行时，使得计算机执行如第二方面至第二方面的任意一种可能的实现方式中描述的一种控制设备发送消息的方法。该计算机可以为接入客户端。
第六方面，本申请实施例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程序或指令，当计算机程序或指令在计算机上运行时，使得计算机执行如第三方面至第三方面的任意一种可能的实现方式中描述的一种控制设备发送消息的方法。该计算机可以为第二接入服务设备。
第七方面，本申请实施例提供一种包括指令的计算机程序产品，当指令在计算机上运行时，使得计算机执行第一方面或第一方面的各种可能的实现方式中描述的一种控制设备发送消息的方法。
第八方面，本申请实施例提供一种包括指令的计算机程序产品，当指令在计算机上运行时，使得计算机执行第二方面或第二方面的各种可能的实现方式中描述的一种控制设备发送消息的方法。
第九方面，本申请实施例提供一种包括指令的计算机程序产品，当指令在计算机上 运行时，使得计算机执行第三方面或第三方面的各种可能的实现方式中描述的一种控制设备发送消息的方法。
第十方面，本申请实施例提供一种通信装置用于实现上述第一方面至第三方面中任一方面的各种可能的设计中的各种方法。该通信装置可以为上述第一接入服务设备，或者包含上述第一接入服务设备的装置，或者应用于第一接入服务设备中的部件(例如，芯片)。或者，该通信装置可以为上述接入客户端，或者包含上述接入客户端的装置，或者通信装置可以为应用于接入客户端中的部件(例如，芯片)。或者该通信装置可以为上述第二接入服务设备，或者包含上述第二接入服务设备的装置，或者应用于第二接入服务设备中的部件(例如，芯片)。该通信装置包括实现上述方法相应的模块、单元、该模块、单元可以通过硬件实现，软件实现，或者通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块或单元。应理解，上述第十方面中描述的通信装置中还可以包括：总线和存储器，存储器用于存储代码和数据。可选的，至少一个处理器通信接口和存储器相互耦合。
第十一方面，本申请实施例提供了一种通信装置，该通信装置包括：至少一个处理器。其中，至少一个处理器和存储器耦合，当该通信装置运行时，该处理器执行该存储器中存储的计算机执行指令或程序，以使该通信装置执行如上述第一方面或第一方面的任一方面的各种可能的设计中的任一项的方法。例如，该通信装置可以为第一AP，或者为应用于第一AP中的芯片。
第十二方面，本申请实施例提供了一种通信装置，该通信装置包括：至少一个处理器。其中，至少一个处理器和存储器耦合，当该通信装置运行时，该处理器执行该存储器中存储的计算机执行指令或程序，以使该通信装置执行如上述第二方面或第二方面的任一方面的各种可能的设计中的任一项的方法。例如，该通信装置可以为接入客户端，或者为应用于接入客户端中的芯片。
第十三方面，本申请实施例提供了一种通信装置，该通信装置包括：至少一个处理器。其中，至少一个处理器和存储器耦合，当该通信装置运行时，该处理器执行该存储器中存储的计算机执行指令或程序，以使该通信装置执行如上述第三方面或第三方面的任一方面的各种可能的设计中的任一项的方法。例如，该通信装置可以为第二AP，或者为应用于第二AP中的芯片。
应理解，第十一方面至第十三方面任一方面描述的存储器还可以使用存储介质替换，本申请实施例对此不作限定。应理解，第十一方面至第十三方面任一方面描述的通信装置还可以包括通信接口，用于接收或发送信息。
在一种可能的实现方式中，第十一方面至第十三方面任一方面描述的存储器可以为该通信装置内部的存储器，当然，该存储器也可以位于该通信装置外部，但是至少一个处理器仍然可以执行该存储器中存储的计算机执行指令或程序。
第十四方面，本申请实施例提供了一种通信装置，该通信装置包括一个或者多个模块，用于实现上述第一方面中任一个方面的方法，该一个或者多个模块可以与上述第一方面中任一个可能的实现中的各个步骤相对应。
第十五方面，本申请实施例提供了一种通信装置，该通信装置包括一个或者多个模 块，用于实现上述第二方面中任一个方面的方法，该一个或者多个模块可以与上述第二方面中任一个可能的实现中的各个步骤相对应。
第十六方面，本申请实施例提供了一种通信装置，该通信装置包括一个或者多个模块，用于实现上述第三方面中任一个方面的方法，该一个或者多个模块可以与上述第三方面中任一个可能的实现中的各个步骤相对应。
第十七方面，本申请实施例提供一种芯片系统，该芯片系统包括处理器，处理器用于读取并执行存储器中存储的计算机程序，以执行第一方面及其任意可能的实现方式中的方法。可选地，芯片系统可以为单个芯片，或者多个芯片组成的芯片模组。可选地，芯片系统还包括存储器，存储器与处理器通过电路或电线与存储器连接。进一步可选地，芯片系统还包括通信接口。通信接口用于与芯片之外的其它模块进行通信。
第十八方面，本申请实施例提供一种芯片系统，该芯片系统包括处理器，处理器用于读取并执行存储器中存储的计算机程序，以执行第二方面及其任意可能的实现方式中的方法。可选地，芯片系统可以为单个芯片，或者多个芯片组成的芯片模组。可选地，芯片系统还包括存储器，存储器与处理器通过电路或电线与存储器连接。进一步可选地，芯片系统还包括通信接口。通信接口用于与芯片之外的其它模块进行通信。
第十九方面，本申请实施例提供一种芯片系统，该芯片系统包括处理器，处理器用于读取并执行存储器中存储的计算机程序，以执行第三方面及其任意可能的实现方式中的方法。可选地，芯片系统可以为单个芯片，或者多个芯片组成的芯片模组。可选地，芯片系统还包括存储器，存储器与处理器通过电路或电线与存储器连接。进一步可选地，芯片系统还包括通信接口。通信接口用于与芯片之外的其它模块进行通信。
第二十方面，本申请实施例提供一种通信系统，该通信系统包括：接入客户端和第一服务接入设备，其中，第一服务接入设备用于执行第一方面及其任意可能的实现方式中的方法，接入客户端用于执行第二方面及其任意可能的实现方式中的方法。
在本申请的一个可能的实现中，该通信系统还可以包括：第二服务接入设备，该第二服务接入设备用于执行第三方面及其任意可能的实现方式中的方法。
上述提供的任一种装置或计算机存储介质或计算机程序产品或芯片或通信系统均用于执行上文所提供的对应的方法，因此，其所能达到的有益效果可参考上文提供的对应的方法中对应方案的有益效果，此处不再赘述。
附图说明
图1A为STA数量和吞吐量之间的关系示意图；
图1B为本申请实施例提供的一种未接入AP的STA和AP之间的冲突示意图；
图2为本申请实施例提供的一种通信系统的架构示意图；
图3为本申请实施例提供的另一种通信系统的架构示意图；
图4为本申请实施例提供的一种通信设备的硬件结构示意图；
图5为本申请实施例提供的一种控制设备发送消息的方法的流程图；
图6为本申请实施例提供的一种第一接入服务设备为接入客户端分配首发时间范围的示意图；
图7为本申请实施例提供的一种接入客户端接入接入服务设备的方法的流程图；
图8A为本申请实施例提供的另一种控制设备发送消息的方法的流程图；
图8B为本申请实施例提供的再一种控制设备发送消息的方法的流程图；
图9为本申请实施例提供的一种通信装置的结构示意图；
图10为本申请实施例提供的另一种通信装置的结构示意图；
图11为本申请实施例提供的一种芯片的结构示意图。
具体实施方式
下面结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。其中，在本申请实施例的描述中，以下实施例中所使用的术语只是为了描述特定实施例的目的，而并非旨在作为对本申请的限制。如在本申请的说明书和所附权利要求书中所使用的那样，单数表达形式“一种”、“所述”、“上述”、“该”和“这一”旨在也包括例如“一个或多个”这种表达形式，除非其上下文中明确地有相反指示。还应当理解，在本申请以下各实施例中，“至少一个”、“一个或多个”是指一个或两个以上(包含两个)。术语“和/或”，用于描述关联对象的关联关系，表示可以存在三种关系；例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A、B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。
在本说明书中描述的参考“一个实施例”或“一些实施例”等意味着在本申请的一个或多个实施例中包括结合该实施例描述的特定特征、结构或特点。由此，在本说明书中的不同之处出现的语句“在一个实施例中”、“在一些实施例中”、“在其他一些实施例中”、“在另外一些实施例中”等不是必然都参考相同的实施例，而是意味着“一个或多个但不是所有的实施例”，除非是以其他方式另外特别强调。术语“包括”、“包含”、“具有”及它们的变形都意味着“包括但不限于”，除非是以其他方式另外特别强调。术语“连接”包括直接连接和间接连接，除非另外说明。“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。
在本申请实施例中，“示例性地”或者“例如”等词用于表示作例子、例证或说明。本申请实施例中被描述为“示例性地”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用“示例性地”或者“例如”等词旨在以具体方式呈现相关概念。
在介绍本申请实施例之前，首先对本申请实施例中的名词做如下释义：
1)、接入服务设备，是无线局域网(wireless local area network，WLAN)的重要组成部分，用于提供无线网络(比如，Wi-Fi信号)覆盖环境、供接入客户端接入网络的设备。在接入服务设备提供的无线网络覆盖范围内，接入客户端以通过无线方式连接接入服务设备，以接入网络(如互联网)。接入客户端之间可以通过接入服务设备互相传输数据，例如，通过接入服务设备的无线连接服务互相传输数据，或者，通过接入服务设备的有线连接服务互相传输数据。作为一种示例，本申请实施例中的接入服务设备可以为接入点(access point，AP)，俗称“热点”。
本申请实施例中涉及到的接入服务设备可以是带Wi-Fi功能的家用路由器或客户终端设 备(customer premise equipment、CPE)无线路由器，也可以是其他可以作为热点设备的移动终端，例如智能手机、笔记本电脑、平板电脑等，本申请实施例对此不作具体限定。本申请实施例中的Wi-Fi信号用于实现接入客户端接入无线局域网络，以实现网络通信，Wi-Fi信号包括频率为2.4GHz的Wi-Fi信号和5GHz的Wi-Fi信号等。Wi-Fi信号通常由接入服务设备提供。
2)接入客户端，指通过接入服务设备提供的接入服务访问网络(如互联网)的设备，可以是接入服务设备的下一级接入服务设备，也可以是站点(station，STA)等电子设备。举例说明，假设AP1接入AP2，AP1通过AP2访问网络，那么AP1可以看作是AP2的下一级接入服务设备，AP2可以看作是AP1的上一级接入服务设备，或者称之为AP1可以看作是AP2的子接入服务设备，而AP2为AP1的父接入服务设备，换言之，对于AP2而言，AP1也可以看作是一个STA。
站点，(station，STA)，是一种具有无线连接功能，能够向用户提供语音和/或数据连通性的电子设备，且能够通过AP接入网络的电子设备，又可以称之为终端设备、用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端(mobile terminal，MT)等。目前，一些站点的举例包括：手机(mobile phone)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobileinternet device，MID)、可穿戴设备、虚拟现实(virtual reality，VR)设备、增强现实(augmented reality，A R)设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、车载设备等。
3)多频多通道模式(Multi band multi concurrent，MBMC)，也可以称为：多频多发模式：支持多个频段(band)，每个band都有独立的收发通道，可以同时工作。
4)多频单通道模式(Multi-band single concurrent，MBSC)，也可以称为：多频单发模式：支持多个band，但是使用同一个收发通道，同一时间只能工作在一个band；如果需要变更到其他band，需要切换通道。
支持MBMC和MBSC的AP和STA已经成为业界主流；其中，5GHz频段由于信道多、非Wi-Fi干扰小、频带宽，成为无线接入的主流频段；在实际使用中，经常使用5GHz频段传输对吞吐量要求高的数据业务。
5)关联响应(association response)消息，也可以称为：关联响应帧，当STA试图接入某个接入点时，接入点会针对来自STA的关联请求(association request)消息回复association response消息。在响应的过程中，接入点会指定一个关联标识符(association ID)。
6)关联请求(association request)消息，也可以称为：关联请求帧，STA找到兼容网络并且通过身份验证，便会发送association request消息以试图加入网络。capability information(性能信息)字段用来指出移动式工作站所要加入的网络类型。在接受关联请求消息之前，接入点会验证capability information、SSID以及(扩展的(extended))支持速率(supported rated)等字段是否匹配网络参数。
7)信标(beacon)帧，主要用来声明某个网络的存在。AP定期传送的信标帧可让STA 得知该网络的存在，从而调整加入该网络所必需的参数。接入点负责传送beacon帧，beacon帧所及范围即为AP的基本服务区域。
8)触发帧(Trigger frame):802.11ax标准定义的一种新的控制帧(control frame)，由AP发送给接入客户端。接入客户端接收到Trigger frame后，在短帧间隔(short interframe space，SIFS)时间内反馈TB-PPDU frame。
9)TB-PPDU：802.11ax标准定义的一种PPDU格式，为了响应AP发来的Trigger frame。
10)信息单元(information element，IE)，802.11管理帧的组成部分，管理帧由帧头以及帧实体(frame body)两部分组成。其中帧实体包括固定域和一系列信息单元两部分。IE由三个部分组成：1个字节的Element ID域、1个字节的Length域，以及变长的Information域。
相关技术中，802.11标准采用CSMA/CA竞争机制，允许AP和STA公平竞争空口，使用物理和虚拟载波监听技术，可以有效减少AP和STA之间的发送冲突。但是随着STA数目的增加，需要选择更大的EDCA退避窗口参数，这样导致吞吐量下降非常明显，如图1A所示，因此AP的集中式控制(本申请后续简称为：集中控制)逐渐成为一种趋势，集中控制允许AP为接入该AP的每个接入客户端分配报文发送时间和报文接收时间，不使用CSMA/CA的竞争机制，可以有效的改善吞吐和时延。本申请实施例中的报文发送时间用于接入客户端向AP发送上行报文(也可以称为：上行消息)，报文接收时间用于接入客户端接收来自AP的下行报文(也可以称为：下行消息)。
但是，对于未接入某个AP的接入客户端A，AP并不知晓该接入客户端A的上线时间，换言之，对于AP而言，AP不知晓接入客户端A什么时候会接入该AP。此外，如果AP无法预测接入客户端A的上线时刻，无法为接入客户端A分配报文发送时间。这就需要接入客户端A主动上报probe request等消息，但是接入客户端A主动上报probe request等消息的时间范围有可能和AP为其他接入客户端(比如，接入客户端B和接入客户端C)分配的报文发送时间或报文接收时间中的任一个重叠，在重叠的时间范围上，不同接入客户端同时向AP发送的上行消息会发生碰撞，且AP向其他接入客户端发送的下行报文也可能和接入客户端A发送的上行报文发生碰撞，从而会引起干扰。
如图1B所示，接入客户端C、接入客户端B均在工作频段1上与AP通信，AP为接入客户端C分配报文接收时间范围(比如，下行时间范围(downlink，DL)1)。AP为接入客户端B分配报文接收时间范围(比如，DL2)，可选的，接入客户端B和接入客户端C在接收到DL1和DL2后可以向AP反馈确认应答(Acknowledgement，ACK)。之后，由于AP集中控制各个接入客户端，在AP需要接入客户端C发送上行消息时，AP可以在上行(uplink，UL)1上触发接入客户端C发送触发消息，以触发接入客户端C向AP发送上行消息。但是假如，未接入AP的接入客户端A在如图1B所示的时间范围向AP发送了诸如探测请求消息等上行消息。由于，该时间范围与UL1对应的时间范围存在交集，即重叠，那么势必会对AP与接入客户端C之间的通信造成干扰，引起冲突。或者，如果AP准备将UL1作为接入客户端C的发送上行消息的时间范围，但是如果接入客户端A在UL1对应的时间范围发送了上行消息，那么还会影响AP为接入客户端C分配报文发送时间范围。
基于此，本申请实施例提供一种控制设备发送消息的方法，该方法中在接入客户端 接入第一接入服务设备之前，由第一接入服务设备触发接入客户端在第一接入服务设备允许的首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息，避免了接入客户端在未接入第一接入服务设备之前主动向第一接入服务设备发送首次上行消息的情况发生，从而避免了接入客户端所发送的首次上行消息对第一接入服务设备与其他接入客户端之间的通信带来的干扰。
如图2所示，图2为本申请实施例提供的一种通信系统的架构示意图，该系统包括：接入服务设备100以及接入客户端200。
其中，接入服务设备100用于为接入该接入服务设备100的接入客户端提供服务。其中，接入服务设备100与接入客户端200之间具有通过除无线保真信号以外的方式建立的第一通信连接。比如，接入服务设备100可以与接入客户端200以蓝牙、通用分组无线服务技术(general packet radio service，GPRS)、近距离通信(near field communication，NFC)等方式建立的第一通信连接。后续，如果接入客户端200需要通过无线保真信号接入接入服务设备100，那么接入客户端200可以通过第一通信连接向接入服务设备100提供接入客户端200需要通过无线保真信号接入接入服务设备100的指示。
作为一种示例，本申请实施例中的接入服务设备可以为AP。
如图3所示，图3与图2的区别在于：如图3所示的通信系统还可以包括：接入服务设备300，上述接入客户端200已接入接入服务设备300，且接入客户端200可以不具有和接入服务设备100之间的第一通信连接。接入服务设备300也用于为接入该接入服务设备100的接入客户端提供服务。
值得说明的是，本申请实施例中的接入客户端200在接入一个接入服务设备之后，可以通过其所接入的接入服务设备接入网络以访问云端多媒体服务器上的视频、图片、网页、音频、文档等。比如说接入客户端200可以通过接入服务设备100的一个工作频段接入接入服务设备100。
本申请实施例中的接入服务设备300和接入服务设备100可以是同一个无线局域网(wireless local area network，WLAN)中的接入设备。这样接入客户端200以无线保真信号接入该接入服务设备100以后，接入客户端200能够通过接入服务设备100实现接入到WLAN中。
值得说明的是，在存在接入服务设备300的情况下，可以将接入服务设备300看作是接入客户端200的源接入服务设备，将接入服务设备100看作是接入客户端200需要切换的目标接入服务设备，也即接入客户端200要从接入服务设备300切换到接入服务设备100。关于接入客户端200为何从接入服务设备300切换到接入服务设备100可以参考下述实施例中的描述，此处不再赘述。
在本申请的另一个可能的实现方式中，该接入服务设备300和接入服务设备100为不同的接入服务设备。在接入服务设备300和接入服务设备100为不同的接入服务设备的情况下，为了实现接入服务设备300和接入服务设备100之间的通信，如图3所示，该通信系统还可以包括：接入控制器(access controller，AC)400。其中，接入服务设备300和接入服务设备100分别与AC 400连接，且可以互相通信。AC 400用于对接入其的接入服务设备进行管理。例如，AC 400可以对接入服务设备进行优化，以使该接入服 务设备可以更好地提供服务，除此之外，AC 400还可以中转接入服务设备300和接入服务设备100之间的信令，比如AC 400将来自接入服务设备300的消息通过AC 400的无线接入点控制与供应(controlling and provisioning of wireless access point，CAPWAP)消息转发给接入服务设备100，从而实现接入服务设备300和接入服务设备100之间的通信。CAPWAP定义了接入服务设备与AC之间如何通信，为实现接入服务设备和AC之间的互通性提供一个通用封装和传输机制。
在接入服务设备300和接入服务设备100为不同的接入服务设备实体的情况下，本申请实施例中的接入服务设备300、接入客户端200、接入服务设备100以及AC 400可以组成一个基本服务集(basic service set，BSS)，也即，接入服务设备300和接入服务设备100为同一个BSS内的不同的接入服务设备。
本申请实施例中的接入客户端可以在相同的服务集标识(service set identifier，SSID)之间进行切换。
本申请实施例中一个接入服务设备可以配置多个服务集标识。比如接入服务设备300配置有SSID1和SSID2。接入服务设备100配置有SSID2和SSID3，SSID2为接入服务设备300和接入服务设备100为接入客户端200提供的相同服务集标识，因此，接入客户端200可以通过接入服务设备300的SSID2访问网络，也可以切换至接入服务设备100以通过接入服务设备100的SSID2访问网络。
接入客户端200可以通过接入服务设备接入WLAN网络中，服务配置服务集标识机制是一种最基本的认证机制。在每个WLAN网络区域内，接入服务设备拥有自己的SSID标识，每个接入服务设备的SSID标识由接入服务设备的拥有者设定，接入服务设备的拥有者可以是WLAN运营商、场所业主或个体用户等。
当接入客户端200要接入某个WLAN网络区域时，接入客户端200必须知道该WLAN网络的SSID标识，接入客户端200通过WLAN客户端向该WLAN网络区域内的AP发送携带SSID标识的接入请求，A接入服务设备接收到接入请求后，判断接入客户端200发送来的SSID标识与其本身的SSID标识是否相同，如果相同，那么AP允许该接入客户端200通过无线保真信号与接入服务设备(比如，接入服务设备100或接入服务设备300)进行通信，以接入网络，如果不同，那么接入服务设备将拒绝该接入客户端200接入网络。
下述以接入客户端为STA为例，描述STA接入接入服务设备的过程。该过程可以包括服务发现阶段、链路认证阶段、关联阶段以及接入认证阶段四个阶段：
(1)、服务发现阶段，指的是STA搜索无线网络的过程。扫描可以分为主动扫描和被动扫描，主动扫描是指STA主动探测搜索无线网络，被动扫描是指STA被动的接收AP发送的无线信号。
其中，主动扫描例如可以是：当STA需要和接入服务设备尝试关联时，STA可以在其所支持的信道上依次发送探测信号，探测周围存在的无线网络。探测信号例如可以是探测请求(probe request)消息。其中，probe request消息的接收地址是接入服务设备的MAC地址，发送地址是STA的MAC地址。
一种可能的实现方式中，探测请求消息中可以不携带SSID，以探测周围所有可用的 无线网络。接收到该探测请求消息的接入服务设备都会响应STA，并表明自身的SSID，例如，接入服务设备100、接入服务设备300可以向STA发送携带SSID的探测响应(probe response)消息。这样，STA接收到各接入服务设备发送的探测响应消息后，即可确定周围所有可用的无线网络的SSID。
被动扫描例如可以是：接入服务设备周期性的向其覆盖范围内的STA发送无线网络的信息，例如，接入服务设备300可以在beacon中携带无线网络的SSID，并周期性的广播信标帧。STA可以通过在其所支持的每个信道上侦听信标帧，确定周围可用的无线网络的SSID。
STA确定周围存在可用的无线网络后，即会进行下一步的链路认证。
(2)、链路认证阶段，指的是接入服务设备确定STA的合法性的过程。目前，链路认证通常采用开放系统认证的方式。开放系统认证方式中，STA向接入服务设备发送authentication request消息)。接入服务设备接收到STA的身份认证请求消息后，反馈authentication response消息。在接入服务设备允许STA认证通过的情况下，该身份认证响应消息表示允许认证。在STA认证不通过的情况下，身份认证响应消息表示认证不通过。开放系统认证是一种不安全的认证方式，所以实际使用中通常会和其它的接入认证方式结合使用，以提高安全性。
链路认证成功后，会继续下一步的关联。
(3)、关联阶段，指的是STA和接入服务设备之间进行无线链路服务协商的过程。在关联阶段，STA会向接入服务设备发送关联请求消息，并在其中携带STA的各种参数以及STA根据服务配置选择的各种参数，例如可以包括STA支持的速率和信道、选择的接入认证方式以及加密算法等。以扩展型接入服务设备为例，当接入服务设备接收到来自STA的关联请求消息后，会根据其中携带的参数为STA配置相应的无线链路服务，比如确定是否需要为STA配置接入认证，以及为STA配置哪种接入认证方式和加密算法等。
在关联阶段，STA发送association request消息，接入服务设备响应association response消息。
(4)、接入认证阶段，指的是对无线连接进行认证，确定STA是否有权限接入无线网络的过程。在一种可能的实现方式中，接入认证可以采用现有Wi-Fi网络安全接入(Wi-Fiprotected access，WPA)、WPA2、WPA3等安全认证机制中的“四步握手”(4-way handshake)接入认证方式。简单来说，“四步握手”的目的在于协商临时传输密钥(pairwise transientkey，PTK)，其中PTK被用于加密后续STA和接入服务设备之间的传播帧。在“四步握手”过程中会用到SSID的密码(即现有技术中用户连接SSID对应的无线网络时手动输入的密码)，因此在“四步握手”开始之前，STA需获知SSID的密码。
一个或多个STA、一个或多个接入点中的每一个可遵循标准来操作，作为解说性、非限定性示例，该标准诸如是IEEE 802.11标准(例如，IEEE 802.11k、IEEE 802.11ai、或两者)和/或Wi-Fi联盟标准(例如，优化连通性体验(OCE)标准、多带操作(MBO)标准、或两者)。
通过802.11k获取的这些测量数据，可用于提供给应用层，以便决策是否执行智能漫游、负载均衡等策略。然后由802.11V(BBS切换管理帧):和802.11R(快速BSS切换)执行 STA的切换动作，快速关联切换到新接入服务设备。
如图4所示，图4示出了本申请实施例提供的一种通信设备的硬件结构示意图。本申请实施例中涉及到的第一接入服务设备、第二接入服务设备等接入服务设备的结构可以参考如图4所示的通信设备的结构示意图。该通信设备包括处理器401，通信线路404以及至少一个通信接口(图4中示例性的以通信接口403为例进行说明)。
处理器401可以是一个通用中央处理器(central processing unit，CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制本申请方案程序执行的集成电路。
通信线路404可包括一通路，在上述组件之间传送信息。
通信接口403，用于与其他装置进行信息交互，例如使用任何收发器一类的装置，用于与其他设备或通信网络通信，如以太网，无线接入网(radio access network，RAN)，无线局域网(wireless local area networks，WLAN)等。
可选的，该通信设备还可以包括存储器402。
存储器402可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器可以是独立存在，通过通信线路404与处理器相连接。存储器也可以和处理器集成在一起。
其中，存储器402用于存储执行本申请方案的计算机执行指令，并由处理器401来控制执行。处理器401用于执行存储器402中存储的计算机执行指令，从而实现本申请下述实施例提供的一种控制设备发送消息的方法。
可选的，本申请实施例中的计算机执行指令也可以称之为应用程序代码，本申请实施例对此不作具体限定。
在具体实现中，作为一种实施例，处理器401可以包括一个或多个CPU，例如图4中的CPU0和CPU1。
在具体实现中，作为一种实施例，通信设备可以包括多个处理器，例如图4中的处理器401和处理器405。这些处理器中的每一个可以是一个单核(single-CPU)处理器，也可以是一个多核(multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
在本申请实施例中，一种控制设备发送消息的方法的执行主体的具体结构，本申请实施例并未特别限定，只要可以通过运行记录有本申请实施例的一种控制设备发送消息的方法的代码的程序，以根据本申请实施例的一种控制设备发送消息的方法进行通信即可。例如，本申请实施例提供的一种控制设备发送消息的方法的执行主体可以是第一接入服务设备中能够调用程序并执行程序的功能模块，或者为应用于第一接入服务设备中的通信装置，例如，芯片、芯片系统、集成电路等等。这些芯片、芯片系统、集成电路可以设置于第一接入服务设 备内部，也可以相对于第一接入服务设备独立，本申请实施例不做限制。另一方面，本申请实施例提供的一种控制设备发送消息的方法的执行主体可以是接入客户端中能够调用程序并执行程序的功能模块，或者为应用于接入客户端中的通信装置，例如，芯片、芯片系统、集成电路等等，这些芯片、芯片系统、集成电路可以设置于接入客户端内部，也可以相对于接入客户端独立，本申请实施例不做限制。下述实施例以一种控制设备发送消息的方法的执行主体为接入客户端、第一接入服务设备为例进行描述。
如图5所示，图5为本申请实施例提供的一种控制设备发送消息的方法，该方法包括：
步骤501、在接入客户端接入第一接入服务设备之前，第一接入服务设备触发接入客户端在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息。首次上行消息为接入客户端为接入第一接入服务设备而向第一接入服务设备发送的第一条消息。其中，第一工作频段为用于在第一接入服务设备与接入客户端之间进行通信的无线保真信号的频率范围。首发时间范围为接入客户端为接入第一接入服务设备而向第一接入服务设备发送首次上行消息的时间范围。或者也可以认为：首发时间范围为接入客户端接入第一接入服务设备之前向第一接入服务设备发送首次上行消息的时间范围。
值得说明的是，第一工作频段主要用于第一接入服务设备与接入客户端以Wi-Fi方式进行通信。
可以理解的是，本申请实施例中涉及的首次上行消息是指：接入客户端在接入第一接入服务设备之前向第一接入服务设备发送的上行消息，比如，接入客户端向第一接入服务设备发送的第一条上行消息。通常首次上行消息用于请求接入第一接入服务设备。比如，首次上行消息可以为探测请求消息(也可以称为探测请求帧)、身份认证请求消息、关联请求消息中的一个或多个，本申请实施例对此不做限定。
结合图2和图3，第一接入服务设备可以为接入服务设备100。接入客户端可以为接入客户端200。此时，接入客户端尚未通过无线保真信号接入该第一接入服务设备。接入客户端可以为第一接入服务设备的下一级接入服务设备，或者为STA，本申请实施例对此不做限定。
可选的，第一接入服务设备能够管理已接入该第一接入服务设备的接入客户端。比如，第一接入服务设备为已接入该第一接入服务设备的接入客户端分配报文接收时间和报文发送时间中的一个或多个，这样已接入该第一接入服务设备的接入客户端便可以根据报文接收时间和报文发送时间中的一个或多个与第一接入服务设备通信。本申请实施例中可以将为已接入该第一接入服务设备的接入客户端分配报文接收时间和报文发送时间中的一个或多个的这种管理方式称之为：集中控制。也即第一接入服务设备可以以集中控制方式管理已接入该第一接入服务设备的接入客户端。其中，报文接收时间，用于接收来自第一接入服务设备的下行报文。报文发送时间，用于接入客户端向第一接入服务设备发送上行报文。通过集中控制各个接入客户端的报文接收时间和报文发送时间，这样可以有效地改善吞吐和时延。
可选的，接入客户端可以支持在不同工作频段之间切换，在不同工作频段属于不同接入服务设备时，可以看作接入客户端可以在不同接入服务设备之间切换。比如，接入客户端支持从第二接入服务设备切换到第一接入服务设备，也即在接入客户端需要通过Wi-Fi信号接入第一接入服务设备之前，该接入客户端已通过第二接入服务设备的一个工作频段接入第二接入服务设备。示例性的，接入客户端支持MBMC或MBSC。
在本申请的一个实施例中，为了防止接入客户端在未接入第一接入服务设备之前，主动向第一接入服务设备发送类似probe request消息等上行消息，本申请实施例中的第一接入服务设备可以隐藏第一接入服务设备的SSID。换言之，第一接入服务设备可以不广播第一接入服务设备的SSID。
本申请实施例中第一接入服务设备触发接入客户端在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息的方式可以是“直接触发”，也可以是“间接触发”。所谓“直接触发”是指：待接入客户端切换到第一工作频段之后，由第一接入服务设备在第一工作频段上向接入客户端发送第二消息或第三消息，以触发接入客户端在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息，具体过程如图8A中的步骤810a所示。“间接触发”是指：第一接入服务设备通过第二接入服务设备向接入客户端转发触发接入客户端在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息的消息，比如如图8B所示的步骤807b。
关于步骤501的具体实现可以参考下述步骤实现，此处不再赘述。
作为一种实现，第一接入服务设备执行步骤501的目的是为了：使得接入客户端确定在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息。
步骤502、接入客户端基于第一接入服务设备的触发在首发时间范围通过第一工作频段向所述第一接入服务设备发送首次上行消息。
在本申请的一个实施例中，在步骤502之前，本申请实施例提供的方法还可以包括：接入客户端获取首发时间范围以及第一工作频段的信息。
在本申请的一个实现方式中，在接入客户端未通过Wi-Fi信号接入第一接入服务设备之前，倘若接入客户端和第一接入服务设备之间还存在其他通信连接(比如，第一通信连接)，则接入客户端获取首发时间范围以及第一工作频段的信息可以通过以下方式实现：接入客户端通过该第一通信连接从第一接入服务设备处获取首发时间范围的信息以及第一工作频段的信息。
在本申请的另一个可能的实现方式中，在接入客户端未通过Wi-Fi信号接入第一接入服务设备之前，倘若接入客户端已接入第二接入服务设备，那么接入客户端获取首发时间范围以及第一工作频段的信息可以通过以下方式实现：接入客户端可以通过该第二接入服务设备从第一接入服务设备处获取首发时间范围的信息以及第一工作频段的信息。
本申请实施例提供一种控制设备发送消息的方法，该方法中在接入客户端接入第一接入服务设备之前，由第一接入服务设备触发接入客户端在第一接入服务设备允许的首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息，避免了接入客户端在未接入第一接入服务设备之前主动向第一接入服务设备发送首次上行消息的情况发生，从而避免了接入客户端所发送的首次上行消息对第一接入服务设备与其他接入客户端之间的通信带来的干扰。
在本申请的一个可选的实施例中，第一接入服务设备触发接入客户端在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息之前，本申请实施例提供的方法还可以包括：第一接入服务设备确定接入客户端将通过无线保真信号接入第一接入服务设备。
关于第一接入服务设备确定接入客户端将通过无线保真信号接入第一接入服务设备的具 体实现可以参考下述实施例中的步骤805的描述，此处不再赘述。
在本申请的一个可选的实施例中，第一接入服务设备触发接入客户端在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息之前，本申请实施例提供的方法还可以包括：第一接入服务设备为接入客户端确定第一工作频段和首发时间范围。
可以理解的是，第一接入服务设备为接入客户端分配首发时间范围的主要目的：为了使得接入客户端后续在第一接入服务设备允许的时间范围向第一接入服务设备发送首次上行消息，这样一方面，对于第一接入服务设备而言，第一接入服务设备也会知晓接入客户端发送首发上行消息的时间范围。另一方面，由于接入客户端如果在时间范围1(非首发时间范围)发送首次上行消息，如果时间范围1与时间范围2重叠，也可以视为发生了冲突，参考上述描述，该干扰会影响第一接入服务设备和其他接入客户端之间的通信。其中，时间范围2为第一接入服务设备接收其他接入客户端发送的上行消息或者向其他接入客户端发送下行消息的时间范围。由于此时接入客户端尚未接入第一接入服务设备，因此来自接入客户端在时间范围1发送的首次上行消息将构成第一接入服务设备和其他接入设备进行通信时的干扰信号，影响第一接入服务设备和其他接入客户端之间的接收和发送，因此为接入客户端分配首发时间范围可以避免接入客户端发送的信号与第一接入服务设备和其他接入客户端之间的接收和发送发生冲突。
值得说明的是，第一接入服务设备除了为接入客户端分配首发时间范围外，还可以为接入客户端分配报文接收时间范围，以及发送除首次上行消息外的报文发送时间范围中的一个或多个。第一接入服务设备通过为接入客户端分配首发时间范围、报文接收时间范围以及报文发送时间范围中的一个或多个，可以实现第一接入服务设备对接入客户端的集中控制。
在一种可能的实施例中，本申请实施例中的首发时间范围为接入客户端接入第一接入服务设备之前，第一接入服务设备为接入客户端分配的。
在一种可能的实施例中，本申请实施例中的报文接收时间范围，以及发送除首次上行消息外的报文发送时间范围为接入客户端接入第一接入服务设备之后，第一接入服务设备为接入客户端分配的。
在一种可能的实施例中，第一接入服务设备在第一工作频段上进行集中控制。值得说明的是，倘若还存在除接入客户端外的其他接入客户端已通过第一工作频段接入第一接入服务设备，那么第一接入服务设备为接入客户端分配首发时间范围时可以参考第一接入服务设备已为其他接入客户端分配的报文接收时间范围/报文发送时间范围，以使得首发时间范围与报文接收时间范围/报文发送时间范围无交集，从而避免冲突。
举例说明，如图6所示，以接入客户端为STA1为例，STA1未接入第一接入服务设备，STA2和STA3通过第一工作频段已接入第一接入服务设备。由于第一接入服务设备采用集中控制方式管理STA2和STA3，假设第一接入服务设备为STA2分配下行时间范围1以及上行时间范围1。第一接入服务设备为STA3分配下行时间范围2，上行时间范围2。这样STA2和STA3便可以在第一接入服务设备所分配的时间范围与第一接入服务设备通信，那么为了避免第一接入服务设备为STA2和STA3分配的时间范围与第一接入服务设备为STA1分配的首发时间范围冲突，那么第一接入服务设备在为STA1分配首发时间范围时可以避开下行时间范围1、上行时间范围1，下行时间范围2以及上行时间范围2。也即首发时间范围与下行 时间范围1、上行时间范围1，下行时间范围2以及上行时间范围2互无交集。比如，如图6中的(a)图所示，如果下行时间范围1、上行时间范围1、下行时间范围2以及上行时间范围2为连续的时间范围，则第一接入服务设备可以将T1时刻之后的一段时间或几段时间作为首发时间范围。比如，如图6中的(b)图所示，如果下行时间范围1、上行时间范围1、下行时间范围2以及上行时间范围2为非连续的时间范围，则第一接入服务设备可以将T2时刻之后的一段时间或几段时间、时间段1、时间段2中的一个或多个时间段作为首发时间范围。
值得说明的是，上述以STA2和STA3通过第一工作频段已接入第一接入服务设备为例，当然，STA2和STA3也可以通过第一接入服务设备支持的其他工作频段接入第一接入服务设备，第一接入服务设备在该其他工作频段上也采用集中式控制。
作为一种示例，本申请实施例中涉及到的工作频段可以由band和信道(channel)标识。
在本申请的一种可能的实现中，第一工作频段可以由第一接入服务设备自行为接入客户端分配。换言之，如果第一接入服务设备向接入客户端提供第一工作频段的信息，则可以向接入客户端提供band的标识和信道(channel)的标识，以使得接入客户端确定第一工作频段的信息。
为了避免第一接入服务设备分配的第一工作频段不是接入客户端所支持的工作频段，在本申请的一种可能的实现中，第一工作频段由第一接入服务设备和接入客户端协商确定，这样可以使得第一接入服务设备为接入客户端分配的第一工作频段为接入客户端所支持的。
比如说，在第一接入服务设备和接入客户端存在第一通信连接的情况下，第一接入服务设备和接入客户端可以通过第一通信连接协商确定第一工作频段。又比如，在接入客户端接入第一接入服务设备之前，倘若接入客户端已接入第二接入服务设备，那么接入客户端可以通过第二接入服务设备与第一接入服务设备协商确定第一工作频段。
或者，在本申请的另一种可能的实现中，第一接入服务设备在分配第一工作频段之前，获取接入客户端所支持的工作频段的信息。这样第一接入服务设备在分配第一工作频段时可以参考接入客户端所支持的工作频段，从而使得第一工作频段为接入客户端所支持的工作频段。至于第一接入服务设备如何获取接入客户端所支持的工作频段可以通过以下方式实现：第一接入服务设备获取接入客户端的标识信息，第一接入服务设备根据接入客户端的标识信息从云端服务器或者该接入客户端所接入的第二接入服务设备处获取接入客户端的能力集。其中，能力集包括接入客户端所支持的工作频段。或者，第一接入服务设备从第二接入服务设备处获取接入客户端所支持的工作频段。或者，第一接入服务设备通过与接入客户端之间的第一通信连接从接入客户端处获取接入客户端的能力集。
在本申请的一种可能的实现中，首发时间范围可以由第一接入服务设备自行为接入客户端分配。比如说，首发时间范围与第一接入服务设备为其他接入客户端分配的报文接收/发送的时间不存在交集。
在本申请的一种可能的实现中，首发时间范围由第一接入服务设备和接入客户端协商确定，这样可以使得第一接入服务设备为接入客户端分配的首发时间范围符合接入客户端的需求。作为一种示例，第一接入服务设备在分配首发时间范围之前，可以获取接入客户端期望的时间范围。这样第一接入服务设备在分配首发时间范围时可以参考接入客户端期望的时间范围，从而使得首发时间范围符合接入客户端的需求。比如，接入客户端希望的在时间范围 X上向第一接入服务设备发送首次上行消息，那么第一接入服务设备可以将时间范围X作为首发时间范围，或者首发时间范围包括时间范围X等等。
本申请实施例中的首发时间范围可以是一个时间点，比如，T1，这表示第一接入服务设备希望接入客户端在该时间点T1向第一接入服务设备发送首发上行消息。当然，当首发时间范围为一个时间点时，该第一接入服务设备还可以指示接入客户端在该时间点之前或者之后向第一接入服务设备发送首发上行消息。或者本申请实施例中的首发时间范围可以是一个时间段，或者称为时间区间，比如T1～T2，(a，b)，(a，b]，[a，b)，[a，b]中的任一个或多个，这表示第一接入服务设备希望接入客户端在T1～T2，(a，b)，(a，b]，[a，b)，[a，b]等任一个所表示的时间区间向第一接入服务设备发送首发上行消息。或者，比如首发时间范围还可以是一个倒计时，比如，首发时间范围为10毫秒，那么表示第一接入服务设备希望接入客户端在10毫秒后向第一接入服务设备发送首次上行消息。又或者，首发时间范围可以为一个非连续的周期性时间范围。
在本申请的一个实施例中，首发时间范围可以包括一个初传时间范围，即该首发时间范围只用于传输一次首次上行消息。但是，在实际过程中，还可能存在接入客户端在初传时间范围未成功向第一接入服务设备发送首发上行消息，那么为了提高通信的可靠性，本申请实施例中的首发时间范围除了包括初传时间范围外，还可以包括一个或多个重传时间范围，其中，重传时间范围为重新发送首次上行消息的时间范围。比如，如果在初传时间范围内，接入客户端未成功向第一接入服务设备发送首次上行消息，那么后续接入客户端可以在一个或多个重传时间范围通过第一工作频段向重新向发送首次上行消息的时间范围。在本申请的一个可选的实施例中，重传时间范围也和接入客户端为其他客户端分配的报文接收时间和/或报文发送时间不冲突。上述重传时间范围的数量可以由第一接入服务设备决定，比如，第一接入服务设备为接入客户端分配的最大重传次数为5次，那么重传时间范围的数量即为5。
本申请实施例提供的方法可以适用于如下场景：
场景1)、接入客户端先接入了第二接入服务设备，之后，接入客户端从第二接入服务设备切换到第一接入服务设备。
结合图3所示的架构，第二接入服务设备可以为接入服务设备300。可选的，与第一接入服务设备不同的是，本申请实施例中的第二接入服务设备可以广播第二接入服务设备的SSID，这样可以使得接入客户端根据探测到的SSID主动尝试接入第二接入服务设备。
本申请实施例中的第一接入服务设备和第二接入服务设备可以都能够进行集中控制，或者第一接入服务设备能够进行集中控制，而第二接入服务设备不能够进行集中控制，比如，第二接入服务设备采用带冲突避免的载波侦听多路访问(carrier sense multiple access with collision avoidance，CSMA/CA)接入方式。
如图7所示，图7示出了本申请实施例提供的一种接入客户端接入接入服务设备的方法，该方法包括：
步骤701、第二接入服务设备广播信标(beacon)帧。
其中，beacon帧中可以携带第二接入服务设备的SSID。
步骤702、接入客户端检测到beacon帧后，向第二接入服务设备发送probe request消息。相应的，第二接入服务设备接收来自接入客户端的probe request消息。其中，probe  request帧的接收地址是第二接入服务设备的MAC，发送地址是接入客户端的MAC地址。
步骤703、第二接入服务设备向接入客户端发送携带SSID的探测响应(probe response)消息，也可以称为探测请求帧。相应的，接入客户端接收来自第二接入服务设备的探测响应(probe response)消息。这样，接入客户端接收到第二接入服务设备送的探测响应消息后，即可确定周围所有可用的无线网络的SSID。
上述步骤701～步骤703可以看作是服务发现阶段。
步骤704、接入客户端向第二接入服务设备发送身份认证请求(authentication request)消息。相应的，第二接入服务设备接收来自接入客户端的身份认证请求消息。
步骤705、第二接入服务设备向接入客户端发送身份认证响应(authentication response)消息，相应的，接入客户端接收来自第二接入服务设备的身份认证响应消息。
上述步骤704～步骤705可以认为是链路认证阶段。
步骤706、接入客户端向第二接入服务设备发送关联请求消息，相应的，第二接入服务设备接收来自接入客户端的关联请求消息。
步骤707、第二接入服务设备向接入客户端发送关联响应消息，相应的，接入客户端接收来自第二接入服务设备的关联响应消息。
上述步骤706～步骤707可以认为是关联阶段。
本申请实施例中一个接入客户端接入接入服务设备之后，可以认为该接入客户端与其所接入的接入服务设备关联。
在本申请的一个可选的实施例中，在接入客户端和接入服务设备关联之后，还可以包括如下步骤708和步骤709。
步骤708、接入客户端与第二接入服务设备关联后，第二接入服务设备为接入客户端分配关联标识(ASSOC_ID)。
步骤709、第二接入服务设备向接入客户端提供ASSOC_ID、第一接入服务设备的MAC地址，能力集等信息(可以扩展其他信息)。比如说，第二接入服务设备可以将ASSOC_ID、第一接入服务设备的MAC地址，能力集等信息封装成关联通知(AssocNotify)消息(帧)，发送给接入客户端。
值得说明的是，如果第二接入服务设备向接入客户端提供ASSOC_ID时，并未获取第一接入服务设备的MAC地址，能力集等信息，则第二接入服务设备可以省去向接入客户端发送第一接入服务设备的MAC地址，能力集等信息等内容。
AssocNotify帧是一种新定义的动作(Action)帧类型(新增ID)，用于关联后，第二接入服务设备给接入客户端发送ASSOC_ID、第一接入服务设备的MAC地址和能力集等信息，AssocNotify帧格式如下表1所示：
表1
Figure PCTCN2022079395-appb-000001
值得说明的是，图7以接入服务设备为第二接入服务设备为例，描述接入客户端接入接入服务设备的过程，后续接入客户端接入第一接入服务设备的过程也可以参考图7 的描述，此处不再赘述。
场景2)、接入客户端先通过除Wi-Fi信号以外的方式与第一接入服务设备建立第一通信连接。之后，接入客户端需要以Wi-Fi信号接入第一接入服务设备。
下述将结合不同场景分别介绍本申请实施例提供的一种控制设备发送消息的方法。
在场景1)中，除了接入客户端可以主动请求从第二接入服务设备切换到第一接入服务设备外，第一接入服务设备也可以主动引导接入客户端从第二接入服务设备切换到第一接入服务设备，分别描述如下：
情况1)、接入客户端主动请求从第二接入服务设备切换到第一接入服务设备。
结合情况1)、在本申请的一个可选的实施例中，本申请实施例提供的方法在步骤501之前还可以包括：步骤801～步骤804，具体的，步骤801～步骤804可以参考图8A～图8B，图8A和图8B分别为本申请实施例提供的另一种控制设备发送消息的方法。
步骤801、第二接入服务设备向接入客户端发送第一接入服务设备的标识信息。相应的，接入客户端接收来自第二接入服务设备的第一接入服务设备的标识信息。
其中，第一接入服务设备的标识信息可以为第一接入服务设备的MAC地址或者IP地址或者第一接入服务设备所接入的WLAN中可以唯一识别该第一接入服务设备的标识的信息，本申请实施例对此不做限定。
在本申请的一个可能的实现方式中，步骤801可以通过以下方式实现：第二接入服务设备可以在接入客户端接入该第二接入服务设备的过程中向接入客户端发送第一接入服务设备的标识信息。具体过程可以参考图7所示的接入流程，此处不再赘述。当然，第二接入服务设备也可以在接入客户端已接入第二接入服务设备之后，再向接入客户端发送第一接入服务设备的标识信息。
在本申请的另一个可能的实现方式中，步骤801可以通过以下方式实现：第二接入服务设备可以在接入客户端的触发下，再向接入客户端发送第一接入服务设备的标识信息。
比如说，接入客户端为了获得更好的吞吐和时延收益，或者接入客户端发现第一接入服务设备的负载超过预设负载阈值，则接入客户端可以向第二接入服务设备发送请求消息，该请求消息用于请求符合要求的AP的标识信息。比如该请求消息中可以携带接入客户端支持的能力集的信息。
其中，接入客户端支持的能力集包括以下信息中的一个或多个：接入客户端自身支持的工作频段、接入客户端是否允许被集中控制等。第二接入服务设备响应于该请求消息，向接入客户端反馈第一接入服务设备的标识信息。可选的，该请求消息中还可以包括接入客户端支持的Wi-Fi模式，比如802.11ac，802.11ax等。
在本申请的再一个可能的实现方式中，步骤801可以通过以下方式实现：在第二接入服务设备确定接入该第二接入服务设备的接入客户端数量大于预设数量阈值，或者存在更好地为该接入客户端服务的第一接入服务设备，或者，第二接入服务设备的上行链路拥塞的情况下，第二接入服务设备可以主动向接入客户端发送第一接入服务设备的标识信息，以引导接入客户端切换到第一接入服务设备。
值得说明的是，在第二接入服务设备确定第一接入服务设备的数量为多个时，第二 接入服务设备可以根据各个第一接入服务设备的能力集信息、负载、以及信号质量等从多个第一接入服务设备中选择一个第一接入服务设备。比如，第二接入服务设备可以选择支持接入客户端的工作频段的接入服务设备作为第一接入服务设备，或者选择与接入客户端所支持的Wi-Fi模式或者选择负载较低，且支持接入客户端的工作频段的接入服务设备作为第一接入服务设备，本申请实施例对第二接入服务设备如何选择第一接入服务设备的方式不做限定。
值得说明的是，上述以接入客户端从第二接入服务设备处获取第一接入服务设备的标识信息为例，当然接入客户端还可以通过除步骤801外的其他方式获取第一接入服务设备的标识信息，本申请实施例对此不做限定。
在本申请的一个可选的实施例中，在接入客户端得到第一接入服务设备的标识信息之后，接入客户端如果决定从第二接入服务设备切换到第一接入服务设备，则接入客户端执行下述步骤802。如果接入客户端决定不切换接入服务设备，那么下述步骤802则可以省略。
步骤802、接入客户端向第二接入服务设备发送第五消息。相应的，第二接入服务设备接收来自接入客户端的第五消息。
其中，第五消息用于表示接入客户端请求通过Wi-Fi信号接入第一接入服务设备。
比如说，第五消息可以为频段切换请求消息(BandSwitchRequest)，也可以称为频段切换请求帧。
可选的，第五消息中包括接入客户端的标识信息，以及第一接入服务设备的标识信息。其中，接入客户端的标识信息用于识别接入客户端。比如，接入客户端的标识信息可以为接入客户端的MAC地址或者IP地址或者接入客户端所接入的WLAN中可以唯一识别该接入客户端的标识，本申请实施例对此不做限定。
在本申请的一个实施例中，该第五消息中还可以包括：第二指示信息，其中，第二指示信息用于表示接入客户端请求通过Wi-Fi信号接入第一接入服务设备。可选的，第五消息还可以包括：第二工作频段的信息。其中，第二工作频段为用于在接入客户端与第二接入服务设备之间进行通信的无线保真信号的频率范围。
在本申请的一个实施例中，第五消息包括接入客户端自身支持的工作频段和期望的时间范围。这样便于第一接入服务设备明确接入客户端自身支持的工作频段，和期望的发送首发上行消息的时间范围。
在本申请的一个实施例中，如果接入客户端在执行步骤801之前，接入客户端还获取到了第二接入服务设备为接入客户端分配的关联标识(ASSOC_ID)，则第五消息中还可以携带关联标识。其中，关联标识用于表示该接入客户端已接入该第二接入服务设备。
因此，在本申请的一个实施例中，如果第五消息中携带了关联标识，表示接入客户端已经将包含能力集的probe request消息和authentication request消息上报给了第二接入服务设备。这样，第二接入服务设备便可以将probe request消息和authentication request消息发送给第一接入服务设备。这样在接入客户端与第一接入服务设备的接入过程中，接入客户端可以省去向第二接入服务设备发送probe request消息和authentication request消息的过程，而执行发送association request消息的过程，因此可以缩短接入客户端接入 第一接入服务设备的过程。
在本申请的一个实施例中，在接入客户端未向第二接入服务设备发送关联标识的情况下，第二接入服务设备向第一接入服务设备转发来自接入客户端的第五消息时，如果未执行向第一接入服务设备转发接入客户端的probe request消息和authentication request消息的过程，那么后续接入客户端接入第一接入服务设备的时候便需要通过图7所示的步骤701～步骤707接入第一接入服务设备，至于接入客户端其可以通过来自第一接入服务设备的指示确定其是否需要执行向第一接入服务设备发送probe request消息和authentication request消息的过程。
当然，如果第二接入服务设备接收到来自接入客户端的第五消息，如果第二接入服务设备通过其他方式确定接入客户端已关联该第二接入服务设备，则第二接入服务设备向第一接入服务设备转发接入客户端的切换请求消息时可以向第一接入服务设备转发接入客户端的probe request消息和authentication request消息。
本申请实施例中的频段切换请求帧是一种新定义的Action帧类型(新增ID)，用来指示接入客户端请求通过Wi-Fi信号接入第一接入服务设备。该频段切换请求帧的格式如表2所示：
表2
Figure PCTCN2022079395-appb-000002
本申请实施例中的接入客户端支持的能力集用于第一接入服务设备确定接入客户端是否能够接入该第一接入服务设备。比如，第一接入服务设备确定第一接入服务设备具有接入客户端支持的工作频段(比如，第一工作频段)，则第一接入服务设备确定接入客户端能够接入该第一接入服务设备。又比如，第一接入服务设备确定第一接入服务设备所支持的Wi-Fi模式包括接入客户端支持的Wi-Fi模式，则第一接入服务设备确定接入客户端能够接入该第一接入服务设备。当然，如果第一接入服务设备确定第一接入服务设备所支持的Wi-Fi模式不包括接入客户端支持的Wi-Fi模式，则第一接入服务设备确定接入客户端不能够接入该第一接入服务设备。
步骤803、第二接入服务设备处理第五消息后，得到第六消息。该第六消息表示接入客户端将通过Wi-Fi信号接入第一接入服务设备。
比如说，第二接入服务设备可以将第五消息中所携带的内容封装成消息，便可以得到第六消息。需要说明的是，如果第五消息中携带关联标识，则第六消息中可以不携带关联标识。
比如说，第五消息包括关联标识和消息1，该消息1包括如表2中除ASSOC_ID外的其他内容，则第二接入服务设备可以将消息1作为第六消息或者将消息1重新封装后得到的消息作为第六消息，比如，处理后的消息1的发送地址为第二接入服务设备的MAC地址，接收地址为第一接入服务设备的MAC地址，本申请实施例对此不作限定。又比如，第五消息通常的发送地址为接入客户端的MAC地址，接收地址为第二接入服务设备的 MAC地址，则第二接入服务设备可以将第五消息中的内容封装成发送地址为第二接入服务设备的MAC地址，接收地址为第一接入服务设备的MAC地址的消息，从而得到第六消息。
步骤804、第二接入服务设备向第一接入服务设备发送第六消息。相应的，第一接入服务设备接收来自第二接入服务设备的第六消息。其中，第一消息用于表示接入客户端请求以Wi-Fi信号接入第二接入服务设备。
示例性地，第六消息可以为切换请求消息，该切换请求消息中包括接入客户端的标识信息。
值得说明的是，本申请实施例中的第一接入服务设备和第二接入服务设备工作在不同的频段，通过AC交互和控制。第一接入服务设备和第二接入服务设备可以是不同的硬件实体，也可以是支持MBMC的一个硬件实体，第一接入服务设备和第二接入服务设备分别负责不同频段的接入，比如，第一接入服务设备负责第一工作频段，而第二接入服务设备负责第二工作频段。
在本申请的一个可能的实现方式中，上述步骤501可以通过步骤805实现。具体的，步骤805可以参考图8A和图8B。
步骤805、第一接入服务设备根据第六消息，确定接入客户端将通过Wi-Fi信号接入第一接入服务设备。
在本申请的一个可选的实施例中，第一接入服务设备确定接入客户端将通过Wi-Fi信号接入第一接入服务设备之后，第一接入服务设备还可以判断是否允许接入客户端接入第一接入服务设备。通常情况下，在第一接入服务设备确定允许接入客户端接入第一接入服务设备的情况下，第一接入服务设备执行下述步骤706。在第一接入服务设备确定不允许接入客户端接入第一接入服务设备的情况下，第一接入服务设备向第二接入服务设备发送第一判断结果。该第一判断结果指示不允许接入客户端接入第一接入服务设备。之后，第二接入服务设备可以向接入客户端发送不允许接入客户端接入第一接入服务设备的指示消息，本申请实施例对此不做限定。
在本申请的一个可能的实现中，在满足预设条件的情况下，第一接入服务设备确定允许接入客户端接入第一接入服务设备。预设条件包括以下一项或多项：第一接入服务设备支持接入客户端支持的工作频段，或者接入客户端能够被集中控制，或者第一接入服务设备的负载低于预设负载阈值，第一接入服务设备支持接入客户端支持的Wi-Fi模式。当然，在不满足预设条件的情况下，第一接入服务设备确定不允许接入客户端接入第一接入服务设备。
步骤806，同步骤502，此处不再赘述。
结合场景1)，在第一接入服务设备为接入客户端确定第一工作频段和首发时间范围之后，在本申请的一个可能的实现方式中，如图8A所示，上述步骤501可以通过步骤807a以及步骤810a实现。在本申请的另一个可能的实现方式中，如图8B所示，上述步骤501可以通过步骤807b以及步骤810b实现。
在本申请的一个可能实施例中，如图8A所示，可选的，本申请实施例提供的一种控制设备发送消息的方法，在步骤806之后还可以包括：步骤807a～步骤809a。
步骤807a、第一接入服务设备向第二接入服务设备发送第一消息。相应的，第二接入服务设备接收来自第一接入服务设备的第一消息。其中，第一消息用于指示接入客户端切换到第一工作频段后进入等待状态。
本申请实施例中的接入客户端进入等待状态是指：该接入客户端切换到第一工作频段之后，不主动在第一工作频段上向第一接入服务设备发送上行消息。
可选的，在首发时间范围到来的情况下，接入客户端便可以退出等待状态，并在该首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息。
作为一种可能的实现：第一消息中包括第一工作频段的信息。
作为另一种可能的实现：本申请实施例中的第一消息中还可以包括第一指示信息(AllowAPTrigger)。其中，第一指示信息用于指示接入客户端切换到第一工作频段后进入等待状态。这样可以通过第一指示信息明确指示接入客户端需要在切换到第一工作频段后进入等待状态，避免接入客户端切换到第一工作频段之后，在第一工作频段上主动向第一接入服务设备发送消息。
或者也可以理解为：第一指示信息，用于指示接入客户端在切换到第一工作频段后，由第一接入服务设备为接入客户端分配消息(帧)发送时间，而不主动向第一接入服务设备发送消息(帧)。
值得说明的是，在AP和接入客户端之间协商切换到第一工作频段后默认进入等待状态，那么第一接入服务设备可以不向接入客户端发送第一指示信息。
可选的，第一消息中还可以包括：切换指示。其中，切换指示用于指示接入客户端切换到第一工作频段。
可选的，第一消息中还可以包括：第二指示信息，该第二指示信息用于指示允许接入客户端接入第一接入服务设备。这样可以显式指示接入客户端，第一接入服务设备允许接入客户端接入第一接入服务设备。
在本申请的一个可能的实施例中，如果第一消息中携带了第一工作频段的信息，则默认指示允许接入客户端接入第一接入服务设备，这时第二指示信息可以根据需要省略。
步骤808a、第二接入服务设备向接入客户端提供第一工作频段的信息，并指示接入客户端切换到第一工作频段进入等待状态。相应的，接入客户端接收来自第二接入服务设备的第一工作频段的信息。
作为一种示例，第二接入服务设备可以将第一工作频段的信息携带在第七消息中发送给接入客户端。比如说，第七消息可以为频段切换响应(BandSwitchResponse)帧。
在本申请的一个可能的实现方式中，频段切换响应(BandSwitchResponse)帧隐式指示接入客户端切换到第一工作频段进入等待状态。
在本申请的一个可选的实施例中，第二接入服务设备向接入客户端发送第一工作频段的信息时，还可以向接入客户端发送第一指示信息。作为一种示例，该第一指示信息也可以携带在BandSwitchResponse帧中，也即第一工作频段的信息和第一指示信息分别作为BandSwitchResponse中的一个字段。当然，第一指示信息和第一工作频段的信息可以分别携带在不同的消息中由第二接入服务设备向接入客户端发送。作为一种示例，第一工作频段的信息和第一指示信息携带在第七消息中。
可选的，频段切换响应还可以包括第二指示信息，该第二指示信息用于指示允许接入客户端接入第一接入服务设备。
在本申请的一个可选的实施例中，本申请实施例提供的方法在还可以包括：第一接入服务设备向接入客户端发送等待超时的时间信息。其中，等待超时的时间信息用于指示接入客户端进入等待状态的时间上限。
在本申请的一个可能的实现方式中，该等待超时的时间信息可以是第一接入服务设备确定接入客户端切换到第一工作频段之后，在第一工作频段上向接入客户端发送的。
在本申请的另一个可能的实现方式中，该等待超时的时间信息可以是第一接入服务设备通过第二接入服务设备向接入客户端发送第一工作频段的过程中，随第一工作频段的信息一起向接入客户端发送的。比如说，第二接入服务设备可以在BandSwitchResponse帧携带等待超时的时间信息，比如，使用如表3中的Bit1～Bit4指示等待超时的时间信息。
值得说明的是，如果第一接入服务设备通过第二接入服务设备向接入客户端发送了等待超时的时间信息，那么第一接入服务设备可以省略通过第二接入服务设备向接入客户端发送第一指示信息的过程，这是由于如果接入客户端接收到了等待超时的时间信息，便可以默认需要在切换到第一工作频段后进入等待状态。之所以向接入客户端发送等待超时的时间信息，目的在于：使得接入客户端在达到等待上限后不再继续处于等待状态。比如，接入客户端可以在达到等待上限后，主动在第一工作频段上向第一接入服务设备发送首次上行消息。或者，接入客户端可以在达到等待上限后，尝试接入除第一接入服务设备外的其他接入服务设备。
举例说明，BandSwitchResponse帧是一种新定义的Action帧类型(新增ID)，用来给接入客户端反馈BandSwithRequest结果(接受(accept)或者拒绝(reject))，如果是accept，则BandSwitchResponse帧中需要携带信道号(channel number)。
示例性的，BandSwitchResponse帧的格式如表3所示：
表3
Figure PCTCN2022079395-appb-000003
作为一种示例，第一接入服务设备的性能信息(capabilities informa)中携带的信息如表4所示：
表4
Figure PCTCN2022079395-appb-000004
Figure PCTCN2022079395-appb-000005
其中，Bit0的值为1，则表示接入客户端在第一工作频段是由AP分配发送时间。如果Bit0的值为0，则表示AP在第一工作频段不为接入客户端分配发送时间。
步骤809a、接入客户端从第二接入服务设备的第二工作频段切换到第一工作频段，并进入等待状态。
值得说明的是，本申请实施例提供的方法还可以包括：接入客户端去除与第二接入服务设备之间的关联，该去关联的过程可以在接入客户端切换到第一工作频段之前执行，也可以在接入客户端切换到第一工作频段之后执行。具体的，去关联过程可以为：接入客户端通过第二工作频段向第二接入服务设备发送去关联请求消息，所述去关联请求消息用于请求与所述第二接入服务设备去关联，所述第二工作频段为所述第一接入点客户端与所述第二接入服务设备之间进行通信的无线保真信号的频率范围。相应的，在第二接入服务设备接收到该去关联请求消息之后，便可以执行后续与接入客户端去除关联的动作，本申请实施例对此不做限定。
值得说明的是，在接入客户端接收到第一指示信息的情况下，接入客户端根据第一指示信息的指示，在切换到第一工作频段进入等待状态。
在接入客户端未接收到第一指示信息的情况下，接入客户端切换到第一工作频段后默认进入等待状态。
在本申请的另一个可选的实施例中，结合图8A，本申请实施例提供的方法在步骤809a之后，还可以包括：
步骤810a、在首发时间范围内，第一接入服务设备通过第一工作频段向接入客户端发送第二消息，或者，在首发时间范围到来之前，第一接入服务设备通过第一工作频段向接入客户端发送第三消息。其中，第三消息用于指示接入客户端在首发时间范围通过第一工作频段向第一接入服务设备发送所述首次上行消息。第三消息中包括首发时间范围的信息。第二消息用于指示接入客户端立即或者在指定时间内或指定时间后向第一接入服务设备发送首次上行消息。
作为一种示例，第二消息中携带第一指示，该第一指示用于指示接入客户端立即或者在指定时间内或指定时间后向第一接入服务设备发送首次上行消息。可选的，第三消息中包括第二指示，用于指示接入客户端在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息。
在本申请实施例中，第二消息和第三消息可以看作是第一接入服务设备向接入客户端发送的触发消息，也可以看作是：Trigger帧。该Trigger帧引导接入客户端回复接入第一接入服务设备的相关帧，比如probe request消息，身份认证请求消息，关联请求消息等，以完成接入客户端接入第一接入服务设备。
Trigger帧是802.11ax定义的控制帧。表5示出了Trigger帧的一种格式。
表5
Figure PCTCN2022079395-appb-000006
Figure PCTCN2022079395-appb-000007
触发帧包含了多种子类型，其在802.11ax中提供了很多重要的功能。表5和表6列举了802.11ax中触发帧具体对应的子类型。其中，Frame control、持续时间(duration)、RA和TA为该Trigger帧的媒体接入控制(Media Access Control，MAC)头(header)。RA和Ta为MAC地址。帧检验序列，用于检错。持续时间表示该帧和它的确认帧将会占用信道多长时间，duration值用于网络分配向量(Network Allocation Vector，NAV)计算。
Common information filed中，定义了Trigger帧的类型(type)，为了上线需要，新增一种类型为管理帧轮询(Management Frame Poll，MFP)(使用8作为新的Trigger type)，用于获取特定类型的管理帧。
表6
Figure PCTCN2022079395-appb-000008
在本申请的一个可能的实施例中，无论是在场景1)还是场景2)中，第一接入服务设备触发接入客户端在首发时间范围通过第一工作频段发送首次上行消息时，第一接入服务设备还可以向接入客户端发送第三指示信息。该第三指示信息用于指示接入客户端在首发时间范围通过第一工作频段发送的首次上行消息的类型。这样后续接入客户端便可以根据第三指示信息，在首发时间范围通过第一工作频段发送第三指示信息所指示的类型的首发上行消息。比如，如果第三指示信息指示所发送的首次上行消息的类型为探测请求消息，则接入客户端在首发时间范围通过第一工作频段发送探测请求消息。
作为一种示例，上述第三指示信息可以作为Management Frame Poll携带在Trigger帧中，如表7所示，表7为本申请实施例提供的一种Trigger帧格式。
表7 Trigger帧格式
Figure PCTCN2022079395-appb-000009
在表5所示的，user informationfield中的Trigger dependent user information中定义了管理帧的类型，管理帧的类型如表8所示：
表8
Figure PCTCN2022079395-appb-000010
AP还可以通过触发帧来调整802.11ax终端的发送功率。在触发帧内的UL Target RSSI子字段上，其按照dBm标注了AP所期待的接收功率(通过所有天线接收到的总功率)。这个功率也是根据RU来分配的，每一个RU分配的字段都有对应的UL Targer RSSI 字段。UL Target RSSI字段采用0-90的数值来映射-110dBm到-20dBm，并且其数值127代表其时采用最大功率来发送的。
如表9所示，表9示出了trigger dependent user informationfield的帧格式。
表9
Figure PCTCN2022079395-appb-000011
比如说，如果第三指示信息为“0”，表示第一接入服务设备希望接入客户端在首发时间范围通过第一工作频段发送probe request消息。如果第三指示信息为“1”，表示第一接入服务设备希望接入客户端在首发时间范围通过第一工作频段发送authentication request消息。如果第三指示信息为“2”，表示第一接入服务设备希望接入客户端在首发时间范围通过第一工作频段发送association request消息。
可以理解的是，如果第一接入服务设备从第二接入服务设备处获取到了接入客户端的probe request消息和authentication request消息，则第三指示信息的取值可以为2。如果第一接入服务设备从第二接入服务设备处获取到了接入客户端的probe request消息，则第三指示信息的取值可以为1。
在本申请的一个可能的实施例中，第一接入服务设备向接入客户端发送Trigger消息后，可以接收来自接入客户端回复的TB-PPDU响应消息。TB-PPDU响应消息也可以称为TB-PPDU响应帧。TB-PPDU响应消息在Data field中承载probe request/authentication request/association request等内容。如下表10所示，TB-PPDU响应消息格式如下表10所示：
表10 TB-PPDU响应消息格式
Figure PCTCN2022079395-appb-000012
Figure PCTCN2022079395-appb-000013
L-STF由10个OFDM符号(symbol)(1,0,1,0,1,0,1,0,1,0)构成，每个symbol是0.8us，总计8us。Symbol的长度是正常长度的1/4，因此称为Short training field，主要用于快速进行信号检测，信号同步，自动增益控制，接收天线选择(Diversity Selection)。
下述表11示出了Data field中承载probe request/authentication request/association request等内容。
表11 Data field中承载的内容
Figure PCTCN2022079395-appb-000014
Figure PCTCN2022079395-appb-000015
在本申请的一个可选的实施例中，本申请实施例提供的方法在步骤810a之前，还可以包括：第一接入服务设备确定接入客户端切换到第一工作频段。
通常情况下，接入客户端切换到第一工作频段前或者切换到第一工作频段后会解除与第二接入服务设备之间的关联。比如，接入客户端向第二接入服务设备发送去关联请求，第二接入服务设备接收到该去关联请求之后确定执行与接入客户端之间的去关联过程。可选的，第二接入服务设备还可以向第一接入服务设备发送通知消息，以向第一接入服务设备通知接入客户端切换到第一工作频段。
第一接入服务设备在发送第二消息或第三消息之前，通过确定接入客户端切换到第一工作频段可以确保在第一工作频段上发送的第二消息或第三消息能够被接入客户端接收到。
其中，步骤810a可以看作是上述步骤501的一种实现方式。
在本申请的一个可选的实施例中，如图8A所示，本申请实施例提供的方法在步骤810a之后还可以包括：
步骤811a、响应于第二消息，接入客户端立即或者在指定时间内或指定时间后，在第一工作频段上向第一接入服务设备发送首次上行消息。或者，响应于第三消息，在首发时间范围，接入客户端在第一工作频段上向第一接入服务设备发送首次上行消息。
作为一种示例，本申请实施例中的接入客户端可以将首次上行消息携带在触发回应帧(Trigger-Based physical layer(PHY)protocol data unit，TB-PPDU)消息在第一工作频段上向第一接入服务设备发送。TB-PPDU消息主要是为了响应由接入服务设备发来的 Trigger消息。
值得说明的是，如果接入客户端获取到第三指示信息，则步骤811a可以通过以下方式实现：响应于第二消息，接入客户端根据第三指示信息立即或者在指定时间内或指定时间后，在第一工作频段上向第一接入服务设备发送首次上行消息。或者，响应于第三消息，在首发时间范围，接入客户端根据第三指示信息在第一工作频段上向第一接入服务设备发送首次上行消息。
比如，第三指示信息指示所发送的首发上行消息的类型为探测请求消息，响应于第二消息，则接入客户端立即或者在指定时间内或指定时间后，在第一工作频段上向第一接入服务设备发送探测请求消息。
步骤812a、在首发时间范围，第一接入服务设备在第一工作频段上接收来自接入客户端的首次上行消息。
步骤813、第一接入服务设备根据首次上行消息执行与接入客户端的接入过程。
在本申请的一个可能的实现方式中，如图8B所示，上述步骤501可以通过步骤807b以及步骤810b实现。如图8B所示，可选的，本申请实施例提供的一种控制设备发送消息的方法，在步骤806之后还可以包括：
步骤807b、第一接入服务设备向第二接入服务设备发送第四消息，相应的，第二接入服务设备接收来自第一接入服务设备的第四消息。
其中，第四消息用于指示接入客户端切换到第一工作频段，并在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息。
作为一种示例，第四消息包含第一工作频段的信息以及首发时间范围的信息。值得说明的是，在第四消息中包括首发时间范围的信息的情况下，接入客户端便可以根据首发时间范围的信息确定在首发时间范围到来时需要在第一工作频段上处于等待状态。
作为另一种示例，第四消息中还可以包括第一指示信息，该第一指示信息指示所述接入客户端切换到第一工作频段后进入等待状态。这样接入客户端便可以根据第一指示信息明确确定切换到第一工作频段后进入等待状态。
其中步骤807b为步骤501的另一种实现方式。
上述图8A和图8B的区别在于：在图8A中，第一接入服务设备通过第二接入服务设备通知接入客户端切换到第一工作频段后，由第一接入服务设备在第一工作频段上向接入客户端发送触发消息(比如第二消息和第三消息)。而在图8B中，第一接入服务设备通过第二接入服务设备向接入客户端通知第一工作频段的过程中，并触发接入客户端在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息，即第一工作频段的信息以及首发时间范围写的在同一个消息中，即第四消息。图8B与图8A相比可以节约信令开销。
步骤808b、第二接入服务设备向接入客户端发送第八消息。相应的，接入客户端接收来自第二接入服务设备的第八消息。其中，第八消息用于指示接入客户端切换到第一工作频段，并在首发时间范围内通过第一工作频段向第一接入服务设备发送首次上行消息。
步骤809b、接入客户端切换到第一工作频段，并进入等待状态。
作为一种示例，上述第八消息可以为BandSwitchResponse消息，也可以称为BandSwitchResponse帧。如表12所示，表12示出了本申请实施例提供的另一种 BandSwitchResponse消息的格式。
表12
Figure PCTCN2022079395-appb-000016
作为一种示例，如果AllowAPTrigger为1，表示由第一接入服务设备在第一工作频段上为接入客户端分配首发时间范围。这样对于接入客户端而言，其可以明确在切换到第一工作频段之后进入等待状态。如果AllowAPTrigger为2，表示第一接入服务设备在第一工作频段上不为接入客户端分配首发时间范围。这样对于接入客户端而言，其可以明确在切换到第一工作频段之后可以向第一接入服务设备发送首发上行消息，而无需进入等待状态。
作为一种示例，上述ProbeReqSendTick即表示首发时间范围的信息。
如图8B所示，在本申请的一个可选的实施例中，本申请实施例提供的方法在步骤809b之后还可以包括：
步骤810b、响应于第八消息，在首发时间范围，接入客户端在第一工作频段上向第一接入服务设备发送首次上行消息。
步骤811b、在首发时间范围，第一接入服务设备在第一工作频段上接收来自接入客户端的首次上行消息。
步骤812b、第一接入服务设备根据首次上行消息执行与接入客户端的接入过程。
情况2)、第一接入服务设备主动引导接入客户端从第二接入服务设备切换到第一接入服务设备。
在本申请的一个可能的实施例中，在情况2)下，本申请实施例中的步骤501可以通过以下方式实现：接入第二接入服务设备的终端数量大于或等于预设数量阈值、所述第二接入服务设备的业务负载大于或等于预设负载阈值、接入客户端位于第一接入服务设备的覆盖范围内，且接入客户端与第一接入服务设备之间的距离小于接入客户端与第二接入服务设备之间的距离、所述接入客户端需要被分配报文接收时间和/或报文发送时间。或者，第二接入服务设备检测到周边的信道质量低于预设信道质量阈值，则第二接入服务设备可以触发第一接入服务设备将接入客户端从第二接入服务设备切换到第一接入服务设备。
在情况2)中，上述图8A和图8B中描述的步骤801～步骤804，则可以省略。
下述将结合场景2)描述，本申请实施例提供的另一种控制设备发送消息的方法。
在场景2)中，本申请实施例提供的步骤501可以通过以下方式实现：第一接入服 务设备可以在第一通信连接上接收来自接入客户端的第五消息，该第五消息用于表示接入客户端将通过Wi-Fi信号接入第一接入服务设备。那么第一接入服务设备根据第五消息确定接入客户端将通过Wi-Fi信号接入第一接入服务设备。
关于第一消息的内容可以参考上述实施例中的描述，此处不再赘述。
相应的，上述步骤501也可以通过以下方式实现：第一接入服务设备在第一通信连接上向接入客户端发送第一消息，以触发接入客户端切换到第一工作频段。之后，在首发时间范围内，第一接入服务设备通过第一工作频段向接入客户端发送第二消息。该第二消息用于指示接入客户端立即向第一接入服务设备发送首次上行消息，或者，在首发时间范围到来之前，第一接入服务设备通过第一工作频段向接入客户端发送第三消息。其中，第三消息用于指示接入客户端在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息。其中，第三消息中包括首发时间范围的信息。
这样对于接入客户端而言，接入客户端可以通过第二消息或第三消息确定在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息。
或者，相应的，上述步骤501也可以通过以下方式实现：第一接入服务设备在第一通信连接上向接入客户端发送第四消息。相应的，接入客户端在第一通信连接上接收来自第一接入服务设备的第四消息，以确定在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息。
这样对于接入客户端而言，接入客户端可以通过第五消息确定在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息。
值得说明的是，在场景2)中，接入客户端切换到第一工作频段之后，后续接入客户端在首发时间范围通过第一工作频段向第一接入服务设备发送首次上行消息的过程可以参考场景1)中的相关描述，此处不再赘述。
上述主要从各个网元之间交互的角度对本申请实施例的方案进行了介绍。可以理解的是，各个网元，例如第一接入服务设备、第二接入服务设备、接入客户端等为了实现上述功能，其包括了执行各个功能相应的结构和/或软件模块。本领域技术人员应该很容易意识到，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，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，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的范围。
本申请实施例可以根据上述方法示例第一接入服务设备、第二接入服务设备、接入客户端进行功能单元的划分，例如，可以对应各个功能划分各个功能单元，也可以将两个或两个以上的功能集成在一个处理单元中。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。需要说明的是，本申请实施例中对单元的划分是示意性的，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。
上面结合图5至图8B，对本申请实施例的方法进行了说明，下面对本申请实施例提供的执行上述方法的通信装置进行描述。本领域技术人员可以理解，方法和装置可以相互结合和引用，本申请实施例提供的通信装置可以执行上述方法中由第一接入服务设备、 第二接入服务设备、接入客户端执行的步骤。
在采用集成单元的情况下，图9示出了上述实施例中所涉及的通信装置，该通信装置可以包括：通信模块913和处理模块912。
在一种可选的实现方式中，该通信装置还可以包括存储模块911，用于存储通信装置的程序代码和数据。
一种示例，该通信装置为第一接入服务设备，或者为应用于第一接入服务设备中的芯片。在这种情况下，通信模块913用于支持该通信装置与外部网元(例如，接入客户端)通信。例如，通信模块913用于执行上述方法实施例中第一接入服务设备的信号收发操作。处理模块912用于执行上述方法实施例中第一接入服务设备的信号处理操作。
一方面，在本申请的一个实施例中，处理模块912用于执行上述实施例确定接入客户端以Wi-Fi信号接入第一接入服务设备以及为接入客户端分配第一工作频段和首发时间范围的过程。通信模块913，用于支持该通信装置执行图5的步骤501。
又例如，在本申请的另一个实施例中，通信模块913用于执行上述实施例的图8A的步骤804、步骤812a中由第一接入服务设备执行的接收动作，以及步骤807a中由第一接入服务设备执行的发送动作。处理模块912，用于支持该通信装置执行图8A的步骤805和步骤806以及步骤813。
再例如，在本申请的另一个实施例中，通信模块913用于执行上述实施例的图8B的步骤804、步骤811b中由第一接入服务设备执行的接收动作，以及步骤807b中由第一接入服务设备执行的发送动作。处理模块912，用于支持该通信装置执行图8B的步骤805、步骤806以及步骤812b。
再一种示例，该通信装置为接入客户端，或者为应用于接入客户端中的芯片。在这种情况下，通信模块913用于支持该通信装置与外部网元(例如，第一接入服务设备或第二接入服务设备)通信。例如，通信模块913用于执行上述方法实施例中接入客户端的信号收发操作。处理模块912用于执行上述方法实施例中接入客户端的信号处理操作。
一方面，在本申请的一个实施例中，通信模块913用于执行上述实施例的图5的步骤502中由接入客户端执行的接收动作。
又例如，在本申请的另一个实施例中，通信模块913用于执行上述实施例的图8A的步骤801、步骤808a、步骤810a中由接入客户端执行的接收动作。通信模块913，还用于执行上述实施例的图8A的步骤802、步骤811a中由接入客户端执行的发送动作。处理模块912，用于执行上述实施例的图8A的步骤809a。
又例如，在本申请的另一个实施例中，通信模块913用于执行上述实施例的图8B的步骤801、步骤808b中由接入客户端执行的接收动作。通信模块913，还用于执行上述实施例的图8A的步骤802、步骤810b中由接入客户端执行的发送动作。处理模块912，用于执行上述实施例的图8B的步骤809b。
其中，处理模块912可以是处理器或控制器，例如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。通信模块可以是收发器、收发电路或通信接口等。存储模块可以是存储器。
图10示出了上述实施例中所涉及的通信装置，该通信装置可以包括：通信单元1013和处理单元1012。
在一种可选的实现方式中，该通信装置还可以包括存储单元1011，用于存储通信装置的程序代码和数据。
一种示例，该通信装置为第一接入服务设备，或者为应用于第一接入服务设备中的芯片。在这种情况下，通信单元1013用于支持该通信装置与外部网元(例如，接入客户端)通信。例如，通信单元1013用于执行上述方法实施例中第一接入服务设备的信号收发操作。处理单元1012用于执行上述方法实施例中第一接入服务设备的信号处理操作。
一方面，在本申请的一个实施例中，通信单元1013，用于支持该通信装置执行图5的步骤501。处理单元1012用于执行上述实施例确定接入客户端以Wi-Fi信号接入第一接入服务设备以及为接入客户端分配第一工作频段和首发时间范围的过程。
又例如，在本申请的另一个实施例中，通信单元1013用于执行上述实施例的图8A的步骤804、步骤812a中由第一接入服务设备执行的接收动作，以及步骤807a中由第一接入服务设备执行的发送动作。处理单元1012，用于支持该通信装置执行图8A的步骤805和步骤806以及步骤813。
再例如，在本申请的另一个实施例中，处理单元1012用于执行上述实施例的图8B的步骤804、步骤811b中由第一接入服务设备执行的接收动作，以及步骤807b中由第一接入服务设备执行的发送动作。处理单元1012，用于支持该通信装置执行图8B的步骤805、步骤806以及步骤812b。
再一种示例，该通信装置为接入客户端，或者为应用于接入客户端中的芯片。在这种情况下，通信单元1013用于支持该通信装置与外部网元(例如，第一接入服务设备或第二接入服务设备)通信。例如，通信单元1013用于执行上述方法实施例中接入客户端的信号收发操作。处理单元1012用于执行上述方法实施例中接入客户端的信号处理操作。
一方面，在本申请的一个实施例中，通信单元1013用于执行上述实施例的图5的步骤502中由接入客户端执行的接收动作。
又例如，在本申请的另一个实施例中，通信单元1013用于执行上述实施例的图8A的步骤801、步骤808a、步骤810a中由接入客户端执行的接收动作。通信单元1013，还用于执行上述实施例的图8A的步骤802、步骤811a中由接入客户端执行的发送动作。处理单元1012，用于执行上述实施例的图8A的步骤809a。
又例如，在本申请的另一个实施例中，通信单元1013，用于执行上述实施例的图8B的步骤801、步骤808b中由接入客户端执行的接收动作。通信单元1013，还用于执行上述实施例的图8A的步骤802、步骤810b中由接入客户端执行的发送动作。处理单元1012，用于执行上述实施例的图8B的步骤809b。
上述处理单元1012或处理模块912可以集成在处理器401和/或处理器405中。存储单元1011或存储模块911可以集成在存储器402中。通信单元1013或通信模块913可以集成在通信接口403中。
关于处理器401和/或处理器405所执行的步骤可以参考处理单元1012或处理模块912执行的动作。通信接口403执行的动作可以参考通信单元1013或通信模块913执行的动作，此处不再赘述。
图11是本申请实施例提供的芯片110的结构示意图。芯片110包括一个或两个以上(包括两个)处理器1110和通信接口1130。
可选的，该芯片110还包括存储器1140，存储器1140可以包括只读存储器和随机存取存储器，并向处理器1110提供操作指令和数据。存储器1140的一部分还可以包括非易失性随机存取存储器(non-volatile random access memory，NVRAM)。
在一些实施方式中，存储器1140存储了如下的元素，执行模块或者数据结构，或者他们的子集，或者他们的扩展集。
在本申请实施例中，通过调用存储器1140存储的操作指令(该操作指令可存储在操作系统中)，执行相应的操作。
一种可能的实现方式中为：第一接入服务设备、接入客户端的结构类似，不同的装置可以使用不同的芯片以实现各自的功能。
处理器1110控制第一接入服务设备、接入客户端中任一个的处理操作，处理器1110还可以称为中央处理单元(central processing unit，CPU)。
存储器1140可以包括只读存储器和随机存取存储器，并向处理器1110提供指令和数据。存储器1140的一部分还可以包括NVRAM。例如应用中存储器1140、通信接口1130以及存储器1140通过总线系统1120耦合在一起，其中总线系统1120除包括数据总线之外，还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见，在图11中将各种总线都标为总线系统1120。
上述本申请实施例揭示的方法可以应用于处理器1110中，或者由处理器1110实现。处理器1110可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器1110中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器1110可以是通用处理器、数字信号处理器(digital signal processing，DSP)、ASIC、现成可编程门阵列(field-programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器1140，处理器1110读取存储器1140中的信息，结合其硬件完成上述方法的步骤。
一种可能的实现方式中，通信接口1130用于执行图5～图8B所示的实施例中的第一接入服务设备的接收和发送的步骤。处理器1110用于执行图5～图8B所示的实施例中的第一接入服务设备的处理的步骤。
一种可能的实现方式中，通信接口1130用于执行图5～图8B所示的实施例中的接入客户端的接收和发送的步骤。处理器1110用于执行图5～图8B所示的实施例中的接入客 户端的处理的步骤。
以上通信模块可以是该装置的一种通信接口，用于从其它装置接收信号。例如，当该装置以芯片的方式实现时，该通信模块是该芯片用于从其它芯片或装置接收信号或发送信号的通信接口。
一方面，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指令，当指令被运行时，实现如图5～图8B中由第一接入服务设备执行的功能。
一方面，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指令，当指令被运行时，实现如图5～图8B中由接入客户端执行的功能。
一方面，提供一种包括指令的计算机程序产品，计算机程序产品中包括指令，当指令被运行时，实现如图5～图8B中由第一接入服务设备执行的功能。
一方面，提供一种包括指令的计算机程序产品，计算机程序产品中包括指令，当指令被运行时，实现如图5～图8B中由接入客户端执行的功能。
一方面，提供一种芯片，该芯片应用于第一接入服务设备中，芯片包括至少一个处理器和通信接口，通信接口和至少一个处理器耦合，处理器用于运行指令，以实现如图5～图8B中由第一接入服务设备执行的功能。
一方面，提供一种芯片，该芯片应用于第一电子设备中，芯片包括至少一个处理器和通信接口，通信接口和至少一个处理器耦合，处理器用于运行指令，以实现如图5～图8B中由接入客户端执行的功能。
本申请实施例提供一种通信系统，该通信系统包括：接入客户端和第一接入设备。其中，第一接入设备用于执行如图5～图8B中由第一接入设备执行的功能，接入客户端用于执行图5～图8B中由接入客户端执行的功能。可选的，通信系统还可以包括第二接入设备，该第二接入设备用于实现图7～图8B中由第二接入服务设备执行的功能。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机程序或指令。在计算机上加载和执行所述计算机程序或指令时，全部或部分地执行本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、网络设备、用户设备或者其它可编程装置。所述计算机程序或指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机程序或指令可以从一个网站站点、计算机、服务器或数据中心通过有线或无线方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是集成一个或多个可用介质的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，例如，软盘、硬盘、磁带；也可以是光介质，例如，数字视频光盘(digital video disc，DVD)；还可以是半导体介质，例如，固态硬盘(solid state drive，SSD)。
尽管在此结合各实施例对本申请进行了描述，然而，在实施所要求保护的本申请过程中，本领域技术人员通过查看附图、公开内容、以及所附权利要求书，可理解并实现公开实施例的其他变化。在权利要求中，“包括”(comprising)一词不排除其他组成部分或步骤，“一”或“一个”不排除多个的情况。单个处理器或其他单元可以实现权利要求 中列举的若干项功能。相互不同的从属权利要求中记载了某些措施，但这并不表示这些措施不能组合起来产生良好的效果。
尽管结合具体特征及其实施例对本申请进行了描述，显而易见的，在不脱离本申请的精神和范围的情况下，可对其进行各种修改和组合。相应地，本说明书和附图仅仅是所附权利要求所界定的本申请的示例性说明，且视为已覆盖本申请范围内的任意和所有修改、变化、组合或等同物。显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包括这些改动和变型在内。

Claims (34)

  1. 一种控制设备发送消息的方法，应用于第一接入服务设备，其特征在于，所述方法包括：
    在接入客户端接入所述第一接入服务设备之前，所述第一接入服务设备触发所述接入客户端在首发时间范围通过第一工作频段向所述第一接入服务设备发送首次上行消息，所述第一工作频段为用于在所述第一接入服务设备与所述接入客户端之间进行通信的无线保真信号的频率范围，所述首次上行消息为所述接入客户端为接入所述第一接入服务设备而向所述第一接入服务设备发送的第一条消息。
  2. 根据权利要求1所述的方法，其特征在于：
    所述接入客户端已经接入第二接入服务设备，所述第一接入服务设备触发所述接入客户端在所述首发时间范围通过所述第一工作频段向所述第一接入服务设备发送所述首次上行消息之前，所述方法还包括：所述第一接入服务设备向所述第二接入服务设备发送第一消息，所述第一消息用于指示所述接入客户端切换到所述第一工作频段后进入等待状态，所述第一消息包含所述第一工作频段的信息；
    所述第一接入服务设备触发所述接入客户端在所述首发时间范围通过所述第一工作频段向所述第一接入服务设备发送所述首次上行消息，包括：在所述首发时间范围内，所述第一接入服务设备通过所述第一工作频段向所述接入客户端发送第二消息，所述第二消息用于指示所述接入客户端立即向所述第一接入服务设备发送所述首次上行消息，或者，在所述首发时间范围到来之前，所述第一接入服务设备通过所述第一工作频段向所述接入客户端发送第三消息，所述第三消息用于指示所述接入客户端在所述首发时间范围通过所述第一工作频段向所述第一接入服务设备发送所述首次上行消息，所述第三消息中包括所述首发时间范围的信息。
  3. 根据权利要求2所述的方法，其特征在于：所述第一消息还包括第一指示信息，所述第一指示信息指示所述接入客户端切换到所述第一工作频段后进入等待状态。
  4. 根据权利要求2或3所述的方法，其特征在于：所述在所述首发时间范围内，所述第一接入服务设备通过所述第一工作频段向所述接入客户端发送第二消息之前，或者，所述在所述首发时间范围到来之前，所述第一接入服务设备通过所述第一工作频段向所述接入客户端发送第三消息之前，所述方法还包括：
    所述第一接入服务设备确定所述接入客户端切换到所述第一工作频段。
  5. 根据权利要求4所述的方法，其特征在于：所述第一接入服务设备确定所述接入客户端切换到所述第一工作频段，包括：
    所述第一接入服务设备接收来自所述第二接入服务设备的通知消息，所述通知消息用于指示所述接入客户端已切换到所述第一工作频段；
    所述第一接入服务设备根据所述通知消息确定所述接入客户端切换到所述工作频段。
  6. 根据权利要求1所述的方法，其特征在于：所述接入客户端已经接入第二接入服务设备，所述第一接入服务设备触发所述接入客户端在所述首发时间范围通过所述第一工作频段向所述第一接入服务设备发送所述首次上行消息，包括：
    所述第一接入服务设备向所述第二接入服务设备发送第四消息，所述第四消息用于指示 所述接入客户端切换到所述第一工作频段，并在所述首发时间范围内通过所述第一工作频段向所述第一接入服务设备发送所述首次上行消息，所述第四消息包含所述第一工作频段的信息以及所述首发时间范围的信息。
  7. 根据权利要求6所述的方法，其特征在于：所述第四消息还包含第一指示信息，所述第一指示信息指示所述接入客户端切换到所述第一工作频段后进入等待状态。
  8. 根据权利要求1￣7任一项所述的方法，其特征在于：所述方法还包括：
    所述第一接入服务设备向所述接入点客户端发送等待超时的时间信息，所述等待超时的时间信息用于指示所述接入客户端进入等待状态的时间上限。
  9. 根据权利要求1￣8任一项所述的方法，其特征在于：所述方法还包括：
    所述第一接入服务设备在所述首发时间范围通过所述第一工作频段接收来自所述接入客户端的所述首发上行消息，所述首发上行消息用于请求通过无线保真信号接入所述第一接入服务设备；
    所述第一接入服务设备根据所述首发上行消息执行所述接入客户端接入所述第一接入服务设备的过程。
  10. 根据权利要求1￣9任一项所述的方法，其特征在于：所述方法还包括：
    所述第一接入服务设备向所述接入客户端发送第三指示信息，所述第三指示信息用于指示所述接入客户端在所述第一工作频段上向所述第一接入服务设备发送的所述首发上行消息的类型。
  11. 根据权利要求1￣10任一项所述的方法，其特征在于：所述首发上行消息包括以下中的一个或多个：
    探测请求消息、验证请求消息、关联请求消息。
  12. 根据权利要求1￣10任一项所述的方法，其特征在于：在所述第一接入服务设备触发所述接入客户端在所述首发时间范围通过所述第一工作频段向所述第一接入服务设备发送首次上行消息之前，所述方法还包括：
    所述第一接入服务设备确定所述接入客户端将通过无线保真信号接入所述第一接入服务设备。
  13. 根据权利要求12所述的方法，其特征在于：在所述第一接入服务设备触发所述接入客户端在所述首发时间范围通过所述第一工作频段向所述第一接入服务设备发送所述首次上行消息之前，所述接入客户端已经接入第二接入服务设备，所述第一接入服务设备确定接入客户端将通过无线保真信号接入所述第一接入服务设备，包括：
    所述第一接入服务设备接收来自所述第二接入服务设备的第六消息，所述第六消息包括所述接入客户端的信息；
    所述第一接入服务设备根据所述第六消息，确定所述接入客户端将通过无线保真信号接入所述第一接入服务设备。
  14. 根据权利要求12所述的方法，其特征在于：在所述第一接入服务设备触发所述接入客户端在所述首发时间范围通过所述第一工作频段向所述第一接入服务设备发送所述首次上行消息之前，所述接入客户端通过第一通信连接与所述第一接入服务设备通信，所述第一通信连接为所述接入客户端通过除无线保真信号外的通信方式与所述第一接入服务设备建立的通信连接，所述第一接入服务设备确定接入客户端将通过无线保真信号接入所述第一接入服 务设备，包括：
    所述第一接入服务设备在所述第一通信连接上接收来自所述接入客户端的第六消息，所述第六消息包括所述接入客户端的信息；
    所述第一接入服务设备根据所述第六消息确定所述接入客户端将通过无线保真信号接入所述第一接入服务设备。
  15. 根据权利要求13或14所述的方法，其特征在于：所述第六消息包括以下信息中的一个或多个：
    第二指示信息、所述接入客户端自身支持的工作频段、期望的时间范围，所述第二指示信息用于指示所述接入客户端将通过无线保真信号接入所述第一接入服务设备。
  16. 根据权利要求2￣7任一项所述的方法，其特征在于：所述第一接入服务设备和所述第二接入服务设备工作在不同的频段，通过同一个接入控制器AC交互和控制；或者，所述第一接入服务设备和所述第二接入服务设备可以是支持MBMC的一个硬件实体，所述第一接入服务设备和所述第二接入服务设备分别负责不同频段的接入；
    所述第一接入服务设备不广播所述第一接入服务设备的SSID，所述第二接入服务设备广播所述第二接入服务设备的SSID。
  17. 根据权利要求1￣16任一项所述的方法，其特征在于：所述在所述第一接入服务设备触发所述接入客户端在所述首发时间范围通过所述第一工作频段向所述第一接入服务设备发送首次上行消息之前，所述方法还包括：
    所述第一接入服务设备为所述接入客户端分配所述第一工作频段和所述首发时间范围。
  18. 根据权利要求1￣17任一项所述的方法，其特征在于：所述首发时间范围与所述第一接入服务设备为接入所述第一接入服务设备的其他接入客户端分配的报文接收/发送时间范围不重叠。
  19. 一种控制设备发送消息的方法，其特征在于：应用于接入客户端中，所述方法包括：
    所述接入客户端在接入第一接入服务设备之前，基于所述第一接入服务设备的触发在首发时间范围通过第一工作频段向所述第一接入服务设备发送首次上行消息，其中，所述第一工作频段为用于在所述接入客户端与所述第一接入服务设备之间进行通信的无线保真信号的频率范围，所述首次上行消息为所述接入客户端为接入所述第一接入服务设备而向所述第一接入服务设备发送的第一条消息。
  20. 根据权利要求19所述的方法，其特征在于：所述接入客户端基于第一接入服务设备的触发之前，所述接入客户端已经接入第二接入服务设备，所述接入客户端基于第一接入服务设备的触发在首发时间范围通过第一工作频段向所述第一接入服务设备发送首次上行消息之前，所述方法还包括：
    所述接入客户端接收来自所述第二接入服务设备的第七消息，所述第七消息用于指示所述接入客户端切换到所述第一工作频段后进入等待状态，所述第七消息包含所述第一工作频段的信息；
    响应于所述第七消息，所述接入客户端切换到所述第一工作频段，并进入等待状态。
  21. 根据权利要求20所述的方法，其特征在于：所述响应于所述第七消息，所述接入客户端切换到所述第一工作频段，并进入等待状态之后，所述方法还包括：
    在所述首发时间范围内，所述接入客户端在所述第一工作频段接收来自所述第一接入服 务设备的第二消息，所述第二消息用于指示所述接入客户端立即向所述第一接入服务设备发送所述首次上行消息，或者，所述接入客户端在所述第一工作频段接收来自所述第一接入服务设备的第三消息，所述第三消息用于指示所述接入客户端在所述首发时间范围通过所述第一工作频段向所述第一接入服务设备发送所述首次上行消息，所述第三消息包括所述首发时间范围的信息。
  22. 根据权利要求20或21所述的方法，其特征在于：所述第七消息还包括第一指示信息，所述第一指示信息指示所述接入客户端切换到所述第一工作频段后进入等待状态。
  23. 根据权利要求19所述的方法，其特征在于：所述接入客户端基于第一接入服务设备的触发之前，所述接入客户端已经接入第二接入服务设备，所述接入客户端基于第一接入服务设备的触发在首发时间范围通过第一工作频段向所述第一接入服务设备发送首次上行消息之前，所述方法还包括：
    所述接入客户端从所述第二接入服务设备处获取第八消息，所述第八消息用于指示所述接入客户端切换到所述第一工作频段，并在所述首发时间范围内通过所述第一工作频段向所述第一接入服务设备发送所述首次上行消息；所述第八消息包含所述第一工作频段的信息以及所述首发时间范围的信息。
  24. 根据权利要求23所述的方法，其特征在于：所述第八消息还包含第一指示信息，所述第一指示信息指示所述接入客户端切换到所述第一工作频段后进入等待状态。
  25. 根据权利要求19￣24任一项所述的方法，其特征在于：所述方法还包括：
    所述接入客户端接收来自所述第一接入服务设备的发送等待超时的时间信息，所述等待超时的时间信息用于指示所述接入客户端进入等待状态的时间上限。
  26. 根据权利要求19￣25任一项所述的方法，其特征在于：所述方法还包括：
    所述接入客户端获取第三指示信息，所述第三指示信息用于指示所述第一接入服务设备希望所述接入客户端在所述第一工作频段上向所述第一接入服务设备发送的所述首发上行消息的类型；
    所述接入客户端基于第一接入服务设备的触发在首发时间范围通过第一工作频段向所述第一接入服务设备发送首次上行消息，包括：
    在所述首发时间范围，所述接入客户端根据所述第三指示信息通过所述第一工作频段向所述第一接入服务设备发送所述首发上行消息。
  27. 根据权利要求19￣26任一项所述的方法，其特征在于：所述接入客户端基于第一接入服务设备的触发之前，所述接入客户端已经接入第二接入服务设备，所述接入客户端基于第一接入服务设备的触发在首发时间范围通过第一工作频段向所述第一接入服务设备发送首次上行消息之前，所述方法还包括：
    所述接入客户端向所述第二接入服务设备发送第五消息，所述第五消息用于表示所述接入客户端请求通过无线保真信号接入所述第一接入服务设备。
  28. 根据权利要求19、25或26任一项所述的方法，其特征在于：所述接入客户端通过第一通信连接与所述第一接入服务设备通信，所述第一通信连接为所述接入客户端通过除无线保真信号外的方式与所述第一接入服务设备建立的连接，所述接入客户端基于第一接入服务设备的触发在首发时间范围通过第一工作频段向所述第一接入服务设备发送首次上行消息之前，所述方法还包括：
    所述接入客户端在所述第一通信连接向所述第一接入服务设备上发送第五消息，所述第五消息用于表示所述接入客户端将通过无线保真信号接入所述第一接入服务设备。
  29. 根据权利要求27或28所述的方法，其特征在于：所述第五消息包括以下信息中的一个或多个：
    第二指示信息、所述接入客户端自身支持的工作频段、期望的时间范围，所述第二指示信息用于指示所述接入客户端将通过无线保真信号接入所述第一接入服务设备。
  30. 一种芯片，其特征在于：所述芯片包括处理器，所述处理器和通信接口耦合，所述处理器用于运行计算机程序或指令，以实现如权利要求1￣18或19￣29任一项所述的方法，所述通信接口用于与所述芯片之外的其它模块进行通信。
  31. 一种接入客户端，其特征在于：包括：至少一个处理器，所述至少一个处理器与通信接口连接，所述通信接口用于接收或发送信息，所述至少一个处理器用于运行存储器中存储的指令以执行如权利要求19￣29任一项所述的方法。
  32. 一种接入服务设备，其特征在于：包括：至少一个处理器，所述至少一个处理器与通信接口连接，所述通信接口用于接收或发送信息，所述至少一个处理器用于运行存储器中存储的指令以执行如权利要求1￣18任一项所述的方法。
  33. 一种通信系统，其特征在于：包括：接入服务设备和接入客户端，所述接入客户端用于执行权利要求19￣29任一项所述的方法，所述接入服务设备用于实现如权利要求1￣18任一项所述的方法。
  34. 一种计算机可读存储介质，其特征在于：所述可读存储介质中存储有指令，当所述指令被执行时，实现如权利要求1￣18或19￣29任一项所述的方法。
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