WO2016106674A1 - 一种信道接入的方法、站点设备和接入点设备 - Google Patents

一种信道接入的方法、站点设备和接入点设备 Download PDF

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Publication number
WO2016106674A1
WO2016106674A1 PCT/CN2014/095878 CN2014095878W WO2016106674A1 WO 2016106674 A1 WO2016106674 A1 WO 2016106674A1 CN 2014095878 W CN2014095878 W CN 2014095878W WO 2016106674 A1 WO2016106674 A1 WO 2016106674A1
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Prior art keywords
channel
access point
point device
site
idle
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PCT/CN2014/095878
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English (en)
French (fr)
Inventor
李波
屈桥
李云波
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华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2014/095878 priority Critical patent/WO2016106674A1/zh
Priority to CN201480083620.4A priority patent/CN107005302B/zh
Publication of WO2016106674A1 publication Critical patent/WO2016106674A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile

Definitions

  • the present invention relates to the field of wireless local area network technologies, and in particular, to a channel access method, a site device, and an access point device.
  • the base station in the WLAN is also called an access point (AP).
  • AP access point
  • single-user transmission and downlink multi-user MIMO Multiple-Input Multiple-Output
  • OFDMA Orthogonal Frequency Division Multiple Access
  • MIMO Multiple-Input Multiple-Output
  • Uplink multi-user technology including input multi-output, has received more attention, and in uplink multi-user technology, obtaining an uplink multi-user request is a necessary process for allocating channels for multiple users.
  • the method of obtaining an uplink multi-user request is to apply MIMO technology or Orthogonal Frequency Division Multiple (OFDM) on a single channel, that is, the AP sends a control frame through a single channel, and if the time passes through the SIFS, The channel device is idle, and the site device that receives the control frame sends a request operation frame (Request To Send, RTS for short).
  • RTS Request To Send
  • the AP determines that the STA has cache data to be sent.
  • the method for obtaining the uplink multi-user request is only applicable to the single-channel communication in the 802.11a standard. For the multi-channel communication in the 802.11n and 802.11ac standards, if the uplink multi-user request is still obtained in the above manner, the STA is connected. Into the network is inefficient.
  • the invention provides a channel access method, a site device and an access point device, which can improve the efficiency of the site device accessing the network.
  • a first aspect of the present invention provides a method for channel access, including:
  • the site device receives an inquiry message frame sent by the access point device, where the query message frame includes the first finger
  • the first indication information is used to indicate an available channel of the access point device, where the available channel of the access point device includes multiple idle single channels or multiple idle subchannels;
  • the site device selects at least one of the idle single channel or at least one of the free subchannels to send a request operation frame to the access point device in an available channel of the access point device, where the request operation frame includes a Two indication information, where the second indication information is used to indicate an available channel of the site device;
  • the site device transmits data on the assigned channel.
  • the method further includes:
  • the site device listens to an available channel
  • the selecting, by the site device, the at least one of the idle single channel or the at least one of the free subchannels to send the request operation frame to the access point device in the available channel of the access point device includes:
  • the site device selects at least one of the idle single channel or at least one of the free subchannels to transmit to the access point device among an available channel of the access point device and an available channel of the available channel of the site device.
  • the request operation frame is
  • the method further includes:
  • the site device generates a random value
  • the site device performs the step of selecting at least one of the idle single channel or at least one of the free subchannels to send a request operation frame to the access point device in an available channel of the access point device.
  • the method further includes:
  • the site device generates a random value
  • the site device performs the available channel and the site at the access point device The step of selecting at least one of the idle single channel or at least one of the free subchannels to transmit the requested operation frame to the access point device in an intersection channel of available channels of the device.
  • the method before the determining, by the site device, that the generated random value is less than a preset value, the method further includes:
  • the site device receives information that is sent by the access point device and carries the preset value.
  • the method further includes:
  • the site device acquires a random backoff number
  • the site device performs the backoff of the obtained random backoff number as an initial value of the backoff counter, wherein the value of the backoff counter is decremented by one for each time slot that is idle;
  • the station device When the value of the backoff counter is reduced to zero, the station device performs the selecting at least one of the free single channel or at least one of the free subchannels in the available channels of the access point device to the The step of the access point device sending a request operation frame.
  • the method further includes:
  • the site device acquires a random backoff number
  • the site device performs the backoff of the obtained random backoff number as an initial value of the backoff counter, wherein the value of the backoff counter is decremented by one for each time slot that is idle;
  • the station device When the value of the backoff counter is reduced to zero, the station device performs at least one of the idle single channels selected from the available channels of the access point device and the available channels of the site device. Or the step of transmitting the request operation frame to the access point device by at least one of the idle subchannels.
  • the idle time slot includes all available channels of the access point device are idle Or, the intersection channel of the available channel of the access point device and the available channel of the site device is all idle for one time slot, or the primary channel of the available channel of the access point device is idle for one time slot.
  • the idle time slot is one time slot for the primary channel of the available channel of the access point device
  • the channel selected by the station device includes at least the primary channel, or the primary channel. At least one of the subchannels.
  • the site device selects at least one of available channels of the access point device Before the one of the idle single channel or the at least one of the idle subchannels sends a request operation frame to the access point device, the method further includes:
  • the site device waits for at least one time length, wherein the time length includes any one or combination of a short interframe gap SIFS, a dot interframe gap PIFS, a distributed interframe gap DIFS, and an arbitration interframe gap AIFS.
  • a second aspect of the present invention provides a method for channel access, including:
  • the access point device sends an inquiry message frame by using an available channel, where the inquiry message frame includes first indication information, where the first indication information is used to indicate an available channel of the access point device, and the access point device is available.
  • the channel includes a plurality of idle single channels or multiple idle subchannels;
  • the access point device receives a request operation frame sent by the at least one site device, where the request operation frame includes second indication information, where the second indication information is used to indicate an available channel of the site device;
  • the access point device allocates a channel to the corresponding station device according to the received request operation frame
  • the access point device sends an allow operation frame to each of the site devices, where the allow operation frame includes information of a channel allocated by the access point device for each of the site devices, so that each of the site devices is in the The data is transmitted on the assigned channel.
  • each of the request operation frames further includes data information of cache data corresponding to the site device, and the access point device operates the frame according to the request as a corresponding site.
  • the device allocation channel includes:
  • the access point device allocates a channel to the corresponding site device according to the second indication information and the data information.
  • the sending, by the access point device, the query message frame by using an available channel includes:
  • the access point device simultaneously transmits the inquiry message frame on all channels of the available channel.
  • the access point device sends an allow operation frame to each of the site devices, including :
  • the access point device sends an allow operation frame to each of the site devices by receiving a channel of the request operation frame of each of the site devices;
  • the access point device sends an allow operation frame to each of the site devices by using a channel allocated for each of the site devices;
  • the access point device sends, by using the available channel of the access point device, an allowed operation frame to each site device that successfully sends the request operation frame in an aggregated manner, where the permission operation includes the access point device Information for the channel assigned by each site device that successfully requests the operation frame.
  • the method further includes:
  • the access point device sends information carrying a preset value through an available channel of the access point device.
  • a third aspect of the present invention provides a site device, including:
  • a receiving module configured to receive an inquiry message frame sent by the access point device, where the inquiry message frame includes first indication information, where the first indication information is used to indicate an available channel of the access point device, and the access
  • the available channel of the point device includes multiple idle single channels or multiple idle subchannels
  • a processing module configured to select at least one of the idle single channel or at least one of the free subchannels to send a request operation frame to the access point device, where the request operation frame includes a second indication information, where the second indication information is used to indicate an available channel of the site device;
  • the receiving module is further configured to:
  • the processing module is further configured to:
  • Data is transmitted on the assigned channel.
  • the site device further includes:
  • the processing module is specifically configured to:
  • the site device further includes:
  • a random value acquisition module for generating a random value
  • a determining module configured to determine whether the generated random value is less than a preset value, and if yes, triggering the processing module to select at least one of the idle single channel or at least one of the available channels of the access point device
  • the idle subchannel transmits a request operation frame to the access point device.
  • the site device further includes:
  • a random value acquisition module for generating a random value
  • a determining module configured to determine whether the generated random value is less than a preset value, and if yes, triggering the processing module to select at least an intersection channel of an available channel of the access point device and an available channel of the site device One of the idle single channels or at least one of the free subchannels sends the request operation frame to the access point device.
  • the receiving module is further configured to:
  • the site device further includes:
  • a random value acquisition module configured to acquire a random backoff number
  • a backoff module configured to perform the backoff of the obtained backoff counter as an initial value of the backoff counter, where the value of the backoff counter is decremented by one every time a slot is idle, when the value of the backoff counter is reduced to zero
  • triggering the processing module to select at least one of available channels of the access point device
  • One of the idle single channels or at least one of the free subchannels sends a request operation frame to the access point device.
  • the site device further includes:
  • a random value acquisition module configured to acquire a random backoff number
  • a backoff module configured to perform the backoff of the obtained backoff counter as an initial value of the backoff counter, where the value of the backoff counter is decremented by one every time a slot is idle, when the value of the backoff counter is reduced to zero
  • triggering by the processing module, at least one of the idle single channel or at least one of the free subchannels to select an idle channel of the access point device and an available channel of the site device to the access point
  • the device sends the request operation frame.
  • the idle time slot includes all available channels of the access point device are idle Or, the intersection channel of the available channel of the access point device and the available channel of the site device is all idle for one time slot, or the primary channel of the available channel of the access point device is idle for one time slot.
  • the channel selected by the processing module includes at least the primary channel or at least one of the primary channels.
  • the processing module is further configured to:
  • a fourth aspect of the present invention provides a method for channel access, including:
  • a sending module configured to send an inquiry message frame by using an available channel, where the inquiry message frame includes a first Instructing information, the first indication information is used to indicate an available channel of the access point device, and the available channel of the access point device includes multiple idle single channels or multiple idle subchannels;
  • a receiving module configured to receive a request operation frame sent by the at least one site device, where the request operation frame includes second indication information, where the second indication information is used to indicate an available channel of the site device;
  • a processing module configured to allocate a channel to the corresponding site device according to the received request operation frame
  • the sending module is further configured to:
  • the allow operation frame including information of a channel allocated by the access point device for each of the site devices, such that each of the site devices transmits on the allocated channel data.
  • each of the request operation frames further includes data information of cache data corresponding to the site device, where the processing module is specifically configured to:
  • the sending module is specifically configured to:
  • the interrogation message frame is simultaneously transmitted on all channels of the available channel.
  • the sending module is specifically configured to:
  • the sending module is further configured to:
  • Information carrying a preset value is transmitted through an available channel of the access point device.
  • a fifth aspect of the present invention provides a site device, where the site device includes a wireless signal transceiving device, a memory, and a processor, wherein the memory stores a set of program codes, and the processor is configured to call the program code stored in the memory, Do the following:
  • the wireless signal transceiving device Receiving, by the wireless signal transceiving device, an inquiry message frame sent by the access point device, where the inquiry message frame includes first indication information, where the first indication information is used to indicate an available channel of the access point device,
  • the available channel of the access point device includes multiple idle single channels or multiple idle subchannels;
  • the access point device Selecting at least one of the idle single channels or at least one of the free subchannels to send a request operation frame to the access point device, where the request operation frame includes second indication information,
  • the second indication information is used to indicate an available channel of the site device;
  • Data is transmitted on the assigned channel.
  • a sixth aspect of the present invention provides an access point device, where the access point device includes a wireless signal transceiving device, a memory, and a processor, wherein the memory stores a set of program codes, and the processor is configured to call the storage in the memory.
  • Program code to do the following:
  • the inquiry message frame includes first indication information, the first indication information is used to indicate an available channel of the access point device, and the available channel of the access point device includes multiple Idle single channel or multiple idle subchannels;
  • a seventh aspect of the present invention provides a computer storage medium, wherein the computer storage medium stores A program that, when executed, includes some or all of the steps of the method of channel access provided by the first aspect.
  • An eighth aspect of the present invention provides a computer storage medium storing a program that, when executed, includes some or all of the steps of the method of channel access provided by the second aspect.
  • a ninth aspect of the embodiments of the present invention further provides a channel access system, where the system includes an access point device and at least one site device, where
  • the site device is as in the third aspect, or the first possible implementation manner of the third aspect, or the second possible implementation manner of the third aspect, or the third possible implementation manner of the third aspect, or the third aspect
  • the fourth possible implementation manner, or the fifth possible implementation manner of the third aspect, or the sixth possible implementation manner of the third aspect, or the seventh possible implementation manner of the third aspect, or the eighth aspect of the third aspect a possible implementation, or a site device in a ninth possible implementation of the third aspect;
  • the access point device is as in the fourth aspect, or the first possible implementation manner of the fourth aspect, or the second possible implementation manner of the fourth aspect, or the third possible implementation manner of the fourth aspect, or the fourth An access point device in a fourth possible implementation of the aspect.
  • the available channel provided by the access point includes multiple idle single channels or multiple idle subchannels, and the station device randomly selects at least one idle single channel or at least one idle subchannel to send a request operation frame in the available channel, and each Multiple site devices can simultaneously feed back the request operation frame.
  • only one site device can request the operation frame at a time, which improves the efficiency of the access point to allocate channels for the site device. Improves the efficiency of site devices accessing the network, thereby increasing data throughput.
  • FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a method for channel access according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of another method for channel access according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of resource scheduling according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of another resource scheduling according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a site device according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of another site device according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of still another site device according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of an access point device according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of another access point device according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of a system for channel access according to an embodiment of the present invention.
  • the embodiment of the present invention can be applied to a wireless local area network, and the wireless local area network can be a basic service set including an access point (abbreviation: BSS, English: Basic Service Set).
  • BSS Basic Service Set
  • the network may include multiple basic service sets, and each basic service set may include one access point device (English: Access Point (AP) and multiple site devices (English: Station, referred to as STA) associated with the AP.
  • AP Access Point
  • STA Station
  • the AP is also referred to as a wireless access point or hotspot.
  • the AP is an access point for mobile users to enter the wired network. It is mainly deployed in the home, inside the building, and inside the campus. The typical coverage radius is tens of meters to hundreds of meters, and it can also be deployed outdoors.
  • An AP is equivalent to a bridge connecting a wired network and a wireless network. Its main function is to connect the wireless network clients together and then connect the wireless network to the Ethernet.
  • the main standard adopted by AP is IEEE (English: Institute of Electrical and Electronics) Engineers, Chinese: Institute of Electrical and Electronics Engineers) 802.11 series.
  • the AP may be a terminal device or a network device with a WIFI chip.
  • the AP may be a device supporting the 802.11ax standard.
  • the AP may be a device supporting multiple WLANs (Wireless Local Area Network, 802.11n, 802.11g, 802.11b, and 802.11a).
  • the STA may be a wireless communication chip, a wireless sensor, or a wireless communication terminal.
  • a mobile phone supporting WIFI communication function a tablet computer supporting WIFI communication function, a set top box supporting WIFI communication function, and a computer supporting WIFI communication function.
  • the site can support the 802.11ax system. Further optionally, the site supports multiple WLAN formats such as 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a.
  • FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present invention.
  • the application scenario includes 1 AP and 4 STAs. It can be understood that there may be more or fewer STAs in actual applications, which is not limited by the present invention.
  • each The AP and its covered STAs apply the invention.
  • FIG. 2 is a schematic flowchart of a method for channel access according to an embodiment of the present invention. Embodiments of the invention are described from the perspective of STAs.
  • the method for channel access in the embodiment of the present invention as shown in FIG. 2 may include:
  • the STA receives an inquiry message frame sent by the AP, where the inquiry message frame includes first indication information, where the first indication information is used to indicate an available channel of the AP, and the available channel of the AP includes multiple idle single channels or multiple Free subchannels.
  • the Request-Request To Send includes first indication information, which is used to indicate an available channel of the AP, and assumes that the AP can communicate on the specified 13 channels, but the AP It is heard that only 3 of the 13 channels are idle, and the AP can 3 channels as available channels;
  • the first indication information may indicate an available channel by using a center frequency of each channel; the STA and the AP may also pre-define an identification number of each channel, and the first indication information may indicate an available channel by using an identification number.
  • the bandwidth of the single channel may be 20 MHz, 30 MHz, 80 MHz, or 160 MHz, etc., in the embodiment of the present invention, 20 MHz is taken as an example; if the channel of 20 MHz is divided into multiple parts in the frequency domain, each part is a subchannel. For example, a 20 MHz channel is equally divided into four parts in the frequency domain, that is, four subchannels, each having a bandwidth of 5 MHz.
  • the available channel of the AP may include only a plurality of idle single channels, or may include only multiple idle subchannels, or may include multiple idle single channels and multiple idle subchannels at the same time, and the available channels of the AP may be consecutive channels. It may be a discrete channel, which is not limited in the present invention.
  • the method for obtaining the STA request in the embodiment of the present invention only indicates the processing flow of one of the multiple STAs that are simultaneously executed in the basic service set, and the STA may be in multiple STAs thereof. Any STA.
  • the STA selects at least one of the idle single channel or at least one of the free subchannels to send a request operation frame to the AP, where the request operation frame includes second indication information, where the second indication information is used by the STA. Indicates the available channel of the STA.
  • the request operation frame (Request To X, RTX for short) indicates that an operation is requested, and the "X" indicates the operation. If the operation is a request to send a frame (English: Request To Sent, RTS for short), the RTX is RTS. It is stated that the operation is not limited in particular;
  • the STA may randomly select at least one idle single channel, or at least one idle subchannel, or at least one idle single channel and at least one idle subchannel to send RTX to the AP, among the available channels indicated by the first indication information;
  • the STA may listen to the available channel, and randomly select at least one idle single channel in the intersection channel of the available channel that is detected and the available channel indicated by the first indication information, Or at least one idle subchannel, or at least one idle single channel and at least one idle subchannel send RTX to the AP; if the first indicated information indicates that the available channel is channel 2 3 and 4, the available channels that the STA hears are channels 1, 2, and 3, then the intersecting channels are channels 2 and 3, and the STA randomly selects at least one channel in channels 2 and 3 to transmit RTX;
  • the STA selects only one channel, such as an idle single channel, or an idle subchannel, the STA transmits RTX on the channel; if the STA selects multiple channels, such as at least two idle single channels, or at least two idle sub-subs a channel, or a combination of an idle single channel and an idle subchannel, the STA simultaneously transmits RTX on the plurality of channels;
  • the RTX may further include data information of the cached data to be sent by the STA, where the data information may include a service type (such as voice or video) of the cached data, a data length, delay information, etc., so that the AP according to the data.
  • the channel allocated by the information for the STA is more advantageous for the transmission of the cached data.
  • the STA may wait for at least one time length before selecting the feedback channel according to the RRTX, where the time length may include the SIFS (English: Short Inter-frame Space, Chinese: Short interframe gap), PIFS (English: PCF Inter-frame Space, Chinese: Inter-frame gap), DIFS (English: Distributed Inter-frame Spacing, Chinese: Distributed Interframe Clearance) and AIFS (English: Arbitration Inter- Frame Space, Chinese: Any one or combination of arbitration interframe gaps.
  • SIFS Short Inter-frame Space
  • PIFS English: PCF Inter-frame Space
  • Chinese Inter-frame gap
  • DIFS English: Distributed Inter-frame Spacing
  • Chinese Distributed Interframe Clearance
  • AIFS Arbitration Inter- Frame Space
  • the STA may generate a random value, and determine whether the generated random value is less than a preset value, if the generated random value is less than or equal to The preset value, the STA selects at least one of the idle single channel or at least one of the free subchannels to send an RTX to the AP in an available channel of the AP; if the generated random value is greater than the preset value, the STA Ending this process reduces the probability of data collision between different STAs, thereby improving the efficiency of the system.
  • the STA may further receive the information that is sent by the AP and carry the preset value before determining whether the generated random value is less than a preset value, and the information carrying the preset value may be RRTX or other message frames.
  • the invention is not limited.
  • the STA may obtain a random backoff number, and then the obtained random backoff number is backed off as an initial value of the backoff counter, where each idle state One time slot, the value of the backoff counter is decremented by one, when the backoff meter
  • the STA selects at least one of the idle single channels or at least one of the free subchannels to send RTX to the AP in the available channels of the AP, and reduces data between different STAs by backoff. The probability of conflict, thereby increasing the efficiency of the system;
  • the STA may obtain a random backoff number from 0 to a preset threshold.
  • the preset threshold is variable.
  • the STA may change the size of the preset threshold according to the success or failure of the last time the RTX is sent. For example, the STA last time. If the RTX fails to be sent, the RTX that is sent by the other STAs is in conflict with the RTX sent by other STAs, the preset threshold is increased to reduce the probability of acquiring the same random backoff number, and the number of STAs that are simultaneously backed off to zero is reduced.
  • the AP can also adjust the preset threshold according to the available channel of the AP. For example, the AP has fewer available channels. For example, the AP can increase the preset threshold to reduce the number of random backoffs. Probability, and in turn, reduce the number of STAs that are simultaneously backoff to zero;
  • each idle time slot may include all available time slots of the AP, or the time interval of the available channel of the AP and the available channel of the STA is all idle for one time slot, or the primary channel of the available channel of the AP is idle.
  • the preset threshold is 9.
  • the STA can obtain a random backoff number from 0 to 9.
  • the random backoff number is For example, the STA sets the initial value of the backoff counter to 6 for backoff. If all channels of the available channel of the current slot AP are not all idle, that is, at least one idle single channel or at least one idle subchannel is occupied, indicating that the AP If the available channels are already occupied by other STAs that are backed off to zero, the STA stops the backoff and ends the process.
  • the backoff counter is reduced. One; until the backoff counter is reduced to zero, the STA selects at least one of the idle single channel or at least one of the free subchannels in the available channel of the AP to send the RTX to the AP;
  • the preset threshold is 9.
  • the STA can obtain a random backoff number from 0 to 9.
  • the random backoff number is taken as an example.
  • the STA sets the initial value of the backoff counter to 6 for backoff. If the current time slot is not all idle, that is, at least one idle single channel or At least one idle subchannel is occupied, indicating that the intersection channel has been occupied by other STAs that are first backed off to zero, and the STA stops backing off, and the process ends. If the current time slot is idle, the other STAs are not evacuated first.
  • the backoff counter is decremented by one; until the backoff counter is reduced to zero, the STA selects at least one of the idle single channels or at least one of the free subchannels in the available channels of the AP to send the RTX to the AP;
  • the preset threshold is 9.
  • the STA can obtain a random backoff number from 0 to 9.
  • the random backoff number is For example, the STA sets the initial value of the backoff counter to 6 for backoff. If the primary channel is not idle in the current time slot, it indicates that the primary channel has been occupied by other STAs that are first backed off to zero, and the STA stops backing off, and the process ends.
  • the backoff counter is decremented by one; until the backoff counter is reduced to zero, the STA selects at least one of the idle single channels or the available channels of the AP. At least one of the free subchannels sends an RTX to the AP;
  • the channel selected by the STA in the available channel of the AP includes at least the primary channel, or at least one subchannel in the primary channel, that is, the STA is in the AP.
  • the selected one of the available channels may include: the primary channel, or the primary channel and the at least one secondary channel, or at least one of the primary channel and the secondary channel, or at least one of the primary channels a channel, or at least one of the primary channel and at least one of the secondary channels, or at least one of the primary channels and at least one of the secondary channels;
  • the STA requires the backoff channel to be idle during the backoff procedure. In this case, only the STAs that are simultaneously backoff to zero can initiate the RTX, that is, all the RTXs are simultaneously transmitted. Conversely, if the STA only detects that one or part of the backoff channel is idle, it will cause the RTX to be sent by different STAs at different times. When multiple RTXs are not sent at the same time, it will cause difficulty in receiving the AP. For example, STA1 first sends RTX1 on channel A. After a period of time, STA2 sends RTX2 on channel B.
  • the AP after receiving RTX1, the AP needs to reply to the allowed operation frame after the interval of SIFS, but the RTX2 is still received. And the AP does not have the ability to send and receive at the same time. The function is received, so it is not possible to reply to the allowed operation frame while continuing to receive RTX2.
  • the STA requires the backoff channel to be idle during the backoff process, which ensures that the RTX of multiple STAs is sent at the same time, ensuring that only APs that are simplex (only one time can transmit or receive) can successfully receive multiple STAs.
  • RTX and smoothly reply to allow operation frames;
  • the backoff channel may include all channels of an available channel of the AP, or an intersection channel of an available channel of the AP and an available channel of the STA, or a primary channel of an available channel of the AP.
  • the STA receives an allowed operation frame sent by the AP, where the allowed operation frame includes information about a channel allocated by the AP to the STA.
  • Allow operation frame (Clear To X, abbreviated as: CTX) indicates that an operation is allowed, and "X" indicates the operation. If the operation is to allow transmission of frames (English: Clear To Sent, CTS for short), CTX is CTS, which is required. It is stated that the operation is not limited in particular;
  • the CTX may indicate the channel allocated to the STA by the center frequency of each channel; the STA and the AP may also pre-define the identification number of each channel, and the CTX may also indicate the channel allocated to the STA by the identification number.
  • the STA does not receive the CTX sent by the AP, the STA does not successfully send the RTX. If the RTX sent by the STA conflicts with the RTX sent by other STAs, the STA only waits for the RRTX sent by the next AP.
  • the AP allocates a channel to the STA according to the received RTX, and details are not described herein again.
  • the STA sends data on the allocated channel.
  • the STA may acquire the channel allocated by the AP for the STA, and then send the cached data to be sent on the channel;
  • the STA may also wait for at least one time length, and send the cached data to be sent on the channel, where the time length includes any one of SIFS, PIFS, DIFS, and AIFS. Or a combination.
  • the available channel provided by the AP includes multiple idle single channels or multiple idle subchannels, and the STA randomly selects at least one idle single channel or at least one empty among the available channels.
  • the idle sub-channel transmits the RTX.
  • multiple STAs can simultaneously feed back the RTX.
  • only one STA can feedback the RTX at a time, which improves the efficiency of the AP allocating channels for the STA, and further improves.
  • the access efficiency of the network thereby increasing data throughput.
  • FIG. 3 is a schematic flowchart of another method for channel access according to an embodiment of the present invention. Embodiments of the present invention are described from the perspective of an AP.
  • the method for channel access in the embodiment of the present invention as shown in FIG. 3 may include:
  • the AP sends an inquiry message frame by using an available channel, where the inquiry message frame includes first indication information, where the first indication information is used to indicate an available channel of the AP, and the available channel of the AP includes multiple idle single channels or multiple idles. Subchannel.
  • the AP may send the RRTX through at least one idle single channel or idle subchannel, where the RRTX is used to indicate the available channel of the AP, assuming that the protocol It is stipulated that the AP can communicate on the specified 13 channels, but the AP detects that only 3 of the 13 channels are idle, and the AP can use the 3 channels as available channels;
  • the RRTX can indicate the available channel through the center frequency of each channel; the STA and the AP can also pre-define the identification number of each channel, and the RRTX indicates the available channel by the identification number.
  • the bandwidth of the single channel may be 20MHz, 30MHz, 80MHz or 160MHz, etc., in the embodiment of the present invention, 20MHz is taken as an example; if the channel of 20MHz is divided into multiple parts in the frequency domain, each part is a subchannel, and each part is a subchannel.
  • the subchannel has a bandwidth of 5 MHz.
  • the available channel of the AP may include only a plurality of idle single channels, or may include only multiple idle subchannels, or may include multiple idle single channels and multiple idle subchannels at the same time, and the available channels of the AP may be consecutive channels. It may be a discrete channel, which is not limited by the present invention
  • the AP may send the RRTX on all the idle single channels or the idle subchannels at the same time, by occupying the available channels that are intercepted, to avoid being occupied by other APs;
  • the available channel may be a reserved channel, that is, when the AP detects multiple idle channels, first sending a notification frame to inform other devices that its idle channel is occupied within a specified time period, then, The other device does not occupy the idle channel even if the idle channel is detected within the specified time period.
  • the AP may send a preset value to the STA, where the AP may send the preset value through the RRTX, or may send the preset value through other message frames, which is not limited by the present invention; When the value is adjusted, the preset value is sent to the STA, or may be sent each time the RRTX is sent to the STA.
  • the AP receives the RTX sent by the at least one STA, where each RTX includes second indication information, where the second indication information is used to indicate an available channel of the STA.
  • the second indication information is used to indicate an available channel that the STA hears, and the available channel can be indicated by the center frequency of each channel; the STA and the AP pre-define the identification number of each channel, and the available channel can be indicated by the identification number.
  • the AP allocates a channel to the corresponding STA according to the received RTX.
  • the AP may allocate a channel to the corresponding STA according to the second indication information carried by each RTX.
  • each of the RTXs further includes data information of the cached data of the corresponding STA, and the AP may allocate a channel to each STA according to the second indication information of each STA and the data information of the cached data, so that the AP allocates channels for each RTX. Conducive to the transmission of cache data of each RTX.
  • the AP sends CTX to each STA, where the CTX includes information of channels allocated by the APs for each STA, so that each STA sends data on the allocated channel.
  • the AP may send the CTX to each STA in any of the following three manners:
  • FIG. 4 is a schematic diagram of channel allocation according to an embodiment of the present invention.
  • an available channel of an AP includes three idle single channels, which are assumed to be channel 1 and channel from top to bottom.
  • channel 3 is in a busy state, and the AP receives RTX1 of STA1 through channel 1, receives RTX2 of STA2 through channel 2, and receives RTX3 of STA3 through channel 4, then the AP can send CTX1 to STA1 through channel 1, through the channel 2 transmitting CTX2 to STA2, and transmitting CTX3 to STA3 through channel 4, where each CTX includes information of a channel allocated for the corresponding STA;
  • FIG. 5 is a schematic diagram of another channel allocation according to an embodiment of the present invention.
  • an available channel of an AP includes three idle single channels, which are assumed to be from top to bottom.
  • Channel 1, channel 2 and channel 4 channel 3 is in a busy state, and the AP receives the RTX1 of STA1 through channel 1, and receives the RTX2 of STA2 through channel 2. Since the RTX3 and RTX4 on channel 4 collide, the AP cannot receive channel 4. The above information, therefore, the AP only allocates channels for STA1 and STA1.
  • the AP can pass channel 1 and channel 2 to STA1. Transmitting CTX1, and transmitting CTX2 to STA2 through channel 4, where each CTX includes information of a channel allocated for the corresponding STA;
  • the AP sends CTX to all STAs that successfully send RTX in an aggregated manner through the available channels of the AP, that is, simultaneously transmits the same CTX on each channel of the available channel of the AP, and the CTX includes the AP for each success.
  • STA1 and STA2 are STAs that successfully send RTX, and STA3 and STA4 collide because RTX3 and RTX4 are transmitted. Therefore, STA1 and STA2 are not STAs that successfully send RTX.
  • the AP may generate CTX, where the AP carried by the CTX is information about a channel allocated by each STA that successfully transmits the RTX, and then all channels of the available channel of the AP.
  • the CTX is sent simultaneously.
  • the manner in which the AP sends the CTX to the STA includes but is not limited to the above three types.
  • the AP may provide multiple idle single channels or multiple idle subchannels for the STA.
  • the AP may receive multiple STAs at the same time and simultaneously feed back RTX, compared to the prior art.
  • the RTX can only receive one STA feedback, which improves the efficiency of the AP allocating channels to the STAs, thereby improving the access efficiency of the network and thus improving the data throughput.
  • FIG. 6 is a schematic structural diagram of a STA according to an embodiment of the present invention.
  • the STA in the embodiment of the present invention may include at least a receiving module 61 and a processing module 62, where:
  • the receiving module 61 is configured to receive the RRTX sent by the AP, where the RRTX includes first indication information, where the first indication information is used to indicate an available channel of the AP, and the available channel of the AP includes multiple idle single channels or multiple idle subchannels.
  • the processing module 62 is configured to select at least one of the idle single channels or at least one of the free subchannels to send an RTX to the AP, where the RTX includes second indication information, where the second indication information is used to indicate an available channel of the STA. ;
  • the receiving module 61 is also used to:
  • CTX includes information of a channel allocated by the AP for the STA
  • the processing module 62 is also used to:
  • the STA may further include a listening module 63, where:
  • a listening module 63 configured to listen to an available channel
  • the processing module 62 can be specifically configured to:
  • the STA further includes a random value generating module 64 and a determining module 65, as shown in FIG.
  • a random value generating module 64 configured to generate a random value
  • the determining module 65 is configured to determine whether the generated random value is less than a preset value, and if yes, trigger the processing module 62 to select at least one of the free single channels or at least one of the free subchannels to send the RTX to the AP in the available channels of the AP.
  • the judging module 65 can also be used to:
  • the receiving module 61 can also be used to:
  • the STA may further include: a random backoff number obtaining module 66 and a backoff module 67, as shown in FIG.
  • the random backoff number obtaining module 66 is configured to obtain a random backoff number
  • the backoff module 67 is configured to perform the backoff of the obtained random backoff number as an initial value of the backoff counter, wherein the value of the backoff counter is decremented by one for each idle time slot, and the processing module is triggered when the value of the backoff counter is reduced to zero. 62 Selecting at least one of the free single channels or at least one of the free subchannels of the AP's available channels to send the RTX to the AP.
  • the backoff module 67 can also be used to:
  • the obtained random backoff number is backed off as an initial value of the backoff counter, wherein the value of the backoff counter is decremented by one every time one slot is idle, and the available processing channel of the AP is triggered by the processing module 62 when the value of the backoff counter is reduced to zero.
  • Selecting at least one of the idle single channels or at least one of the free subchannels to transmit the RTX to the AP is selected from the intersection channels of the available channels of the STA.
  • each idle time slot includes all available slots of the AP, and one time slot is available, or the available channels of the AP and the available channels of the STA are all idle for one time slot, or the primary channel of the available channel of the AP is idle for one time. Gap.
  • the channel selected by the processing module 62 includes at least a primary channel, or at least one subchannel in the primary channel.
  • processing module 62 can also be used to:
  • the receiving module 61 When the receiving module 61 receives the RRTX, it waits for at least one time length to select at least one of the idle single channels or at least one of the free subchannels to send the RTX to the AP, or the available channels and STAs of the AP. Selecting at least one of the idle single channels or at least one of the free subchannels of the available channels of the available channels sends the RTX to the AP, wherein the time length includes any one or a combination of SIFS, PIFS, DIFS, and AIFS.
  • FIG. 8 is a schematic structural diagram of still another STA according to an embodiment of the present invention.
  • the STA may include: at least one processor 81, such as a CPU, at least one communication bus 82, and a wireless signal.
  • Transceiver 83 and memory 84 are used Signals are transmitted and received, such as RRTX, RTX, CTX, etc.; communication bus 82 is used to implement connection communication between these components.
  • the memory 84 may be a high speed RAM memory or a non-volatile memory such as at least one disk memory.
  • a set of program codes is stored in the memory 84, and the processor 81 is configured to call the program code stored in the memory 84 for performing the following operations:
  • the RRTX includes first indication information, where the first indication information is used to indicate an available channel of the AP, and the available channel of the AP includes multiple idle single channels or multiple idle subchannels;
  • the RTX includes second indication information, where the second indication information is used to indicate an available channel of the STA;
  • CTX includes information about a channel allocated by the AP for the STA
  • processor 81 can also call the stored code in the memory 84 to perform the following operations:
  • the processor 81 invokes the storage code in the memory 84 to select at least one of the free single channels or at least one of the free subchannels to send the RTX to the AP in the available channels of the AP.
  • the processor 81 can also call the stored code in the memory 84 to perform the following operations:
  • processor 81 can also call the stored code in the memory 84 to perform the following operations:
  • the processor 81 calls the stored code in the memory 84 to determine whether the generated random value is less than a preset value
  • the processor may also perform the following operations:
  • the information carrying the preset value sent by the AP is received by the wireless signal transceiver 83.
  • processor 81 can also call the stored code in the memory 84 to perform the following operations:
  • the obtained random backoff number is backed off as an initial value of the backoff counter, wherein the value of the backoff counter is decremented by one for each time slot that is idle;
  • a step of selecting at least one of the free single channels or at least one of the free subchannels to transmit RTX to the AP in the available channels of the AP is performed.
  • processor 81 can also call the stored code in the memory 84 to perform the following operations:
  • the obtained random backoff number is backed off as an initial value of the backoff counter, wherein the value of the backoff counter is decremented by one for each time slot that is idle;
  • the step of selecting at least one of the idle single channel or at least one of the free subchannels to transmit RTX to the AP in the intersection channel of the available channel of the AP and the available channel of the STA is performed.
  • each idle time slot includes all available slots of the AP, and one time slot is available, or the available channels of the AP and the available channels of the STA are all idle for one time slot, or the primary channel of the available channel of the AP is idle for one time. Gap.
  • the channel selected by the processor 81 includes at least the primary channel or at least one of the primary channels.
  • the processor 81 selects at least one of the free single channel or at least one of the free subchannels to send the RTX to the AP in the available channel of the AP in the memory code of the calling memory 84, or the available channel of the AP and the available STA. Before selecting at least one of the idle single channels or at least one of the free subchannels to send the RTX to the AP, the following operations may also be performed:
  • the length of time includes any one or combination of a short interframe gap SIFS, a point interframe gap PIFS, a distributed interframe gap DIFS, and an arbitration interframe gap AIFS.
  • FIG. 9 is a schematic structural diagram of an AP according to an embodiment of the present invention.
  • the station AP in the embodiment of the present invention may include at least a sending module 91, a receiving module 92, and a processing module 93, where:
  • the sending module 91 is configured to send the RRTX by using an available channel, where the RRTX includes first indication information, where the first indication information is used to indicate an available channel of the AP, where the available channel of the AP includes multiple idle single channels or multiple idle subchannels;
  • the receiving module 92 is configured to receive RTX sent by at least one STA, where each RTX includes second indication information, where the second indication information is used to indicate an available channel of the STA;
  • the processing module 93 is configured to allocate a channel to the corresponding STA according to the received RTX.
  • the sending module 91 is also used to:
  • the CTX is transmitted to each STA, the CTX including information of channels allocated by the APs for the respective STAs, so that each STA transmits data on the allocated channel.
  • each RTX further includes data information corresponding to the cached data of the STA, and the processing module 92 may be specifically configured to:
  • the sending module 92 can be specifically configured to:
  • RRTX is transmitted on all channels of the available channel.
  • the sending module 91 is specifically configured to:
  • CTX is sent in an aggregated manner to all STAs that successfully transmit the RTX, and the operation includes information of the channel allocated by the AP for each STA that successfully transmits the RTX.
  • the sending module 91 can also be used to:
  • the information carrying the preset value is sent through the available channel of the AP.
  • FIG. 10 is a schematic structural diagram of still another AP according to an embodiment of the present invention.
  • the AP may include: at least one processor 101, such as a CPU, at least one communication bus 102, and a wireless signal.
  • Transceiver 103 and memory 104 The wireless signal transceiver device 103 is configured to transmit and receive signals, such as RRTX, RTX, CTX, etc.; the communication bus 102 is used to implement connection communication between these components.
  • the memory 104 may be a high speed RAM memory or a non-volatile memory such as at least one disk memory.
  • a set of program codes is stored in the memory 104, and the processor 101 is configured to call program codes stored in the memory 104 for performing the following operations:
  • the RRTX is sent by using an available channel, the RRTX includes first indication information, the first indication information is used to indicate an available channel of the AP, and the available channel of the AP includes multiple idle single channels or multiple idle subchannels;
  • each RTX includes second indication information, where the second indication information is used to indicate an available channel of the STA;
  • the CTX is transmitted to each STA by the wireless signal transmitting and receiving apparatus 103, and the CTX includes information of channels allocated by the APs for the respective STAs, so that each STA transmits data on the allocated channel.
  • Each of the RTXs also includes data information of the cached data of the corresponding STA.
  • the processor 101 calls the storage code in the memory 104 to allocate a channel for the corresponding STA according to the received RTX.
  • the processor 101 calls the storage code in the memory 104 to transmit the RRTX through the available channel, which may be:
  • RRTX is transmitted on all channels of the available channel.
  • the processor 101 sends the CTX to each STA by using the wireless signal transceiver device 103.
  • the CTX is transmitted in an aggregated manner to each STA that successfully transmits the RTX through the available channel of the AP, and the permission operation includes information of a channel allocated by the AP for each STA that successfully transmits the RTX.
  • processor 101 can also call the stored code in the memory 104 to perform the following operations:
  • the information carrying the preset value is sent through the available channel of the AP.
  • FIG. 11 is a schematic structural diagram of a system for channel access according to an embodiment of the present invention.
  • the system for channel access provided by the embodiment of the present invention includes an AP and at least one STA.
  • the N in FIG. 11 represents the number of STAs, and N is an integer.
  • STA please refer to the corresponding embodiment of FIG. 6 to FIG. 8.
  • AP refer to the corresponding embodiment of FIG. 9 and FIG. 10, and details are not described herein again.
  • the embodiment of the present invention further provides a computer storage medium storing a program, which includes some or all of the steps in the method described in connection with FIG. 2 in the embodiment of the present invention.
  • the embodiment of the present invention further provides a computer storage medium storing a program, which includes some or all of the steps in the method described in connection with FIG. 3 in the embodiment of the present invention.
  • the modules in the apparatus of the embodiment of the present invention may be combined, divided, and deleted according to actual needs.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the meaning of "a plurality” is at least two, such as two, three, etc., unless specifically defined otherwise.
  • a "computer-readable medium” can be any apparatus that can contain, store, communicate, propagate, or transport the program for use by the instruction execution system, apparatus, or device, or in conjunction with the instruction execution system, apparatus, or device.
  • computer readable media include the following: electrical connections (electronic devices) having one or more wires, portable computer disk cartridges (magnetic devices), random access memory (RAM), Read only memory (ROM), erasable editable read only memory (EPROM or flash memory), fiber optic devices, and portable compact disk read only memory (CDROM).
  • the computer readable medium may even be a paper or other suitable medium on which the program can be printed, as it may be optically scanned, for example by paper or other medium, followed by editing, interpretation or, if appropriate, other suitable The method is processed to obtain the program electronically and then stored in computer memory.
  • portions of the invention may be implemented in hardware, software, firmware or a combination thereof.
  • multiple steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system.
  • a suitable instruction execution system For example, if implemented in hardware, as in another embodiment, it can be implemented by any one or combination of the following techniques well known in the art: having logic gates for implementing logic functions on data signals. Discrete logic circuits, application specific integrated circuits with suitable combinational logic gates, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.
  • each functional unit in each embodiment of the present invention may be integrated into one processing module, or each unit may exist physically separately, or two or more units may be integrated into one module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules.
  • the integrated modules, if implemented in the form of software functional modules and sold or used as stand-alone products, may also be stored in a computer readable storage medium.
  • the above mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

Abstract

本发明实施例公开了一种信道接入的方法、站点设备和接入点设备，其中一种方法包括：接收接入点设备发送的询问消息帧，所述询问消息帧包括第一指示信息，所述第一指示信息用于指示所述接入点设备的可用信道；在所述接入点设备的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送请求操作帧，所述请求操作帧包括第二指示信息，所述第二指示信息用于指示所述站点设备的可用信道；接收所述接入点设备发送的允许操作帧，所述允许操作帧包括所述接入点设备为所述站点设备分配的信道的信息；在所述分配的信道上发送数据。釆用本发明，可以提高网络的接入效率。

Description

一种信道接入的方法、站点设备和接入点设备 技术领域
本发明涉及无线局域网技术领域，尤其涉及一种信道接入的方法、站点设备和接入点设备。
背景技术
无线局域网中的基站也被称为接入点(Access Point，简称：AP)，现有的无线局域网协议中已经应用了单用户传输和下行多用户MIMO(Multiple-Input Multiple-Output，多输入多输出)技术，由于多数据帧检测技术的进一步发展，包括上行正交频分复用接入技术(Orthogonal Frequency Division Multiple Access，简称：OFDMA)和上行多用户MIMO(Multiple-Input Multiple-Output，多输入多输出)在内的上行多用户技术受到了更多关注，而在上行多用户技术中，获取上行多用户请求是为多用户分配信道的一个必要过程。
目前，获取上行多用户请求的做法是：在单信道上应用MIMO技术或正交频分复用技术(Orthogonal Frequency Division Multiple，简称：OFDM)，即AP通过单信道发送控制帧，经过SIFS时间若信道空闲，接收到该控制帧的站点设备则发送请求操作帧(Request To Send，简称：RTS)，当AP接收到该RTS时，则判定该STA有需要发送的缓存数据。这种获取上行多用户请求的方法，只适用于802.11a标准中的单信道通信，对于802.11n、802.11ac等标准中的多信道通信，如果仍然采用上述方式获取上行多用户请求，则STA接入网络的效率低。
发明内容
本发明提供了一种信道接入的方法、站点设备和接入点设备，可以提高站点设备接入网络的效率。
本发明第一方面提供了一种信道接入的方法，包括：
站点设备接收接入点设备发送的询问消息帧，所述询问消息帧包括第一指 示信息，所述第一指示信息用于指示所述接入点设备的可用信道，所述接入点设备的可用信道包括多个空闲单信道或多个空闲子信道；
所述站点设备在所述接入点设备的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送请求操作帧，所述请求操作帧包括第二指示信息，所述第二指示信息用于指示所述站点设备的可用信道；
所述站点设备接收所述接入点设备发送的允许操作帧，所述允许操作帧包括所述接入点设备为所述站点设备分配的信道的信息；
所述站点设备在所述分配的信道上发送数据。
在第一方面的第一种可能实现方式中，所述方法还包括：
所述站点设备侦听可用信道；
所述站点设备在所述接入点设备的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送请求操作帧包括：
所述站点设备在所述接入点设备的可用信道和所述站点设备的可用信道的交集信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送所述请求操作帧。
在第一方面的第二种可能实现方式中，所述方法还包括：
所述站点设备生成一个随机值；
所述站点设备判断生成的所述随机值是否小于预设值；
若是，所述站点设备则执行所述在所述接入点设备的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送请求操作帧的步骤。
结合第一方面的第一种可能实现方式，在第三种可能实现方式中，所述方法还包括：
所述站点设备生成一个随机值；
所述站点设备判断生成的所述随机值是否小于预设值；
若是，所述站点设备则执行所述在所述接入点设备的可用信道和所述站点 设备的可用信道的交集信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送所述请求操作帧的步骤。
结合第一方面的第二种或第三种任一种可能实现方式，在第四种可能实现方式中，所述站点设备判断生成的所述随机值是否小于预设值之前，还包括：
所述站点设备接收所述接入点设备发送的携带所述预设值的信息。
在第一方面的第五种可能实现方式中，所述方法还包括：
所述站点设备获取一个随机退避数；
所述站点设备将获取的所述随机退避数作为退避计数器的初始值进行退避，其中，每空闲一个时隙，所述退避计数器的数值减一；
当所述退避计数器的数值减为零时，所述站点设备则执行所述在所述接入点设备的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送请求操作帧的步骤。
结合第一方面的第一种可能实现方式，在第六种可能实现方式中，所述方法还包括：
所述站点设备获取一个随机退避数；
所述站点设备将获取的所述随机退避数作为退避计数器的初始值进行退避，其中，每空闲一个时隙，所述退避计数器的数值减一；
当所述退避计数器的数值减为零时，所述站点设备则执行所述在所述接入点设备的可用信道和所述站点设备的可用信道的交集信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送所述请求操作帧的步骤。
结合第一方面的第五种或第六种中任一种可能实现方式，在第七种可能实现方式中，所述每空闲一个时隙包括所述接入点设备的可用信道全部空闲一个时隙，或者，所述接入点设备的可用信道和所述站点设备的可用信道的交集信道全部空闲一个时隙，或者，所述接入点设备的可用信道的主信道空闲一个时隙。
结合第一方面的第五种或第六种中任一种可能实现方式，在第八种可能实 现方式中，若所述每空闲一个时隙为所述接入点设备的可用信道的主信道空闲一个时隙，则所述站点设备选择的信道至少包括所述主信道，或者所述主信道中的至少一个子信道。
结合第一方面或第一方面的第一种至第八种中任一种可能实现方式，在第九种可能实现方式中，所述站点设备在所述接入点设备的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送请求操作帧之前，所述方法还包括：
所述站点设备等待至少一个时间长度，其中，所述时间长度包括短帧间间隙SIFS、点帧间间隙PIFS、分布式帧间间隙DIFS和仲裁帧间间隙AIFS中的任意一种或组合。
本发明第二方面提供了一种信道接入的方法，包括：
接入点设备通过可用信道发送询问消息帧，所述询问消息帧包括第一指示信息，所述第一指示信息用于指示所述接入点设备的可用信道，所述接入点设备的可用信道包括多个空闲单信道或多个空闲子信道；
所述接入点设备接收至少一个站点设备发送的请求操作帧，每个所述请求操作帧包括第二指示信息，所述第二指示信息用于指示所述站点设备的可用信道；
所述接入点设备根据接收的所述请求操作帧为对应的站点设备分配信道；
所述接入点设备向各个所述站点设备发送允许操作帧，所述允许操作帧包括所述接入点设备为各个所述站点设备分配的信道的信息，以使各个所述站点设备在所述分配的信道上发送数据。
在第二方面的第一种可能实现方式中，每个所述请求操作帧还包括对应站点设备的缓存数据的数据信息，所述接入点设备根据接收的所述请求操作帧为对应的站点设备分配信道包括：
所述接入点设备根据所述第二指示信息和所述数据信息为对应的站点设备分配信道。
结合第二方面或第二方面的第一种可能实现方式，在第二种可能实现方式 中，所述接入点设备通过可用信道发送询问消息帧包括：
所述接入点设备同时在所述可用信道的所有信道上发送所述询问消息帧。
结合第二方面或第二方面的第一种至第二种中任一种可能实现方式，在第三种可能实现方式中，所述接入点设备向各个所述站点设备发送允许操作帧包括：
所述接入点设备通过接收各个所述站点设备的所述请求操作帧的信道，向各个所述站点设备发送允许操作帧；或者，
所述接入点设备通过为各个所述站点设备分配的信道，向各个所述站点设备发送允许操作帧；或者，
所述接入点设备通过所述接入点设备的所述可用信道，以聚合的形式给所有成功发送请求操作帧的各个站点设备发送允许操作帧，所述允许操作包括所述接入点设备为每个成功发送请求操作帧的站点设备分配的信道的信息。
结合第二方面或第二方面的第一种至第三种中任一种可能实现方式，在第四种可能实现方式中，所述方法还包括：
所述接入点设备通过所述接入点设备的可用信道发送携带预设值的信息。
本发明第三方面提供了一种站点设备，包括：
接收模块，用于接收接入点设备发送的询问消息帧，所述询问消息帧包括第一指示信息，所述第一指示信息用于指示所述接入点设备的可用信道，所述接入点设备的可用信道包括多个空闲单信道或多个空闲子信道；
处理模块，用于在所述接入点设备的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送请求操作帧，所述请求操作帧包括第二指示信息，所述第二指示信息用于指示所述站点设备的可用信道；
所述接收模块还用于：
接收所述接入点设备发送的允许操作帧，所述允许操作帧包括所述接入点设备为所述站点设备分配的信道的信息；
所述处理模块还用于：
在所述分配的信道上发送数据。
在第三方面的第一种可能实现方式中，所述站点设备还包括：
侦听模块，用于侦听可用信道；
所述处理模块具体用于：
在所述接入点设备的可用信道和所述站点设备的可用信道的交集信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送所述请求操作帧。
在第三方面的第二种可能实现方式中，所述站点设备还包括：
随机值获取模块，用于生成一个随机值；
判断模块，用于判断生成的所述随机值是否小于预设值，若是，则触发所述处理模块在所述接入点设备的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送请求操作帧。
结合第三方面的第一种可能实现方式，在第三种可能实现方式中，所述站点设备还包括：
随机值获取模块，用于生成一个随机值；
判断模块，用于判断生成的所述随机值是否小于预设值，若是，则触发所述处理模块在所述接入点设备的可用信道和所述站点设备的可用信道的交集信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送所述请求操作帧。
结合第三方面的第二种或第三种任一种可能实现方式，在第四种可能实现方式中，所述接收模块还用于：
接收所述接入点设备发送的携带所述预设值的信息。
在第三方面的第五种可能实现方式中，所述站点设备还包括：
随机值获取模块，用于获取一个随机退避数；
退避模块，用于将获取的所述随机退避数作为退避计数器的初始值进行退避，其中，每空闲一个时隙，所述退避计数器的数值减一，当所述退避计数器的数值减为零时，触发所述处理模块在所述接入点设备的可用信道中选择至少 一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送请求操作帧。
结合第三方面的第一种可能实现方式，在第六种可能实现方式中，所述站点设备还包括：
随机值获取模块，用于获取一个随机退避数；
退避模块，用于将获取的所述随机退避数作为退避计数器的初始值进行退避，其中，每空闲一个时隙，所述退避计数器的数值减一，当所述退避计数器的数值减为零时，触发所述处理模块在所述接入点设备的可用信道和所述站点设备的可用信道的交集信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送所述请求操作帧。
结合第三方面的第五种或第六种中任一种可能实现方式，在第七种可能实现方式中，所述每空闲一个时隙包括所述接入点设备的可用信道全部空闲一个时隙，或者，所述接入点设备的可用信道和所述站点设备的可用信道的交集信道全部空闲一个时隙，或者，所述接入点设备的可用信道的主信道空闲一个时隙。
结合第三方面的第五种或第六种中任一种可能实现方式，在第八种可能实现方式中，若所述每空闲一个时隙为所述接入点设备的可用信道的主信道空闲一个时隙，则所述处理模块选择的信道至少包括所述主信道，或者所述主信道中的至少一个子信道。
结合第三方面或第三方面的第一种至第八种中任一种可能实现方式，在第九种可能实现方式中，所述处理模块还用于：
在等待至少一个时间长度时，才在所述接入点设备的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送请求操作帧，其中，所述时间长度包括SIFS、PIFS、DIFS和AIFS中的任意一种或组合。
本发明第四方面提供了一种信道接入的方法，包括：
发送模块，用于通过可用信道发送询问消息帧，所述询问消息帧包括第一 指示信息，所述第一指示信息用于指示所述接入点设备的可用信道，所述接入点设备的可用信道包括多个空闲单信道或多个空闲子信道；
接收模块，用于接收至少一个站点设备发送的请求操作帧，每个所述请求操作帧包括第二指示信息，所述第二指示信息用于指示所述站点设备的可用信道；
处理模块，用于根据接收的所述请求操作帧为对应的站点设备分配信道；
所述发送模块还用于：
向各个所述站点设备发送允许操作帧，所述允许操作帧包括所述接入点设备为各个所述站点设备分配的信道的信息，以使各个所述站点设备在所述分配的信道上发送数据。
在第四方面的第一种可能实现方式中，每个所述请求操作帧还包括对应站点设备的缓存数据的数据信息，所述处理模块具体用于：
根据所述第二指示信息和所述数据信息为对应的站点设备分配信道。
结合第四方面或第四方面的第一种可能实现方式，在第二种可能实现方式中，所述发送模块具体用于：
同时在所述可用信道的所有信道上发送所述询问消息帧。
结合第四方面或第四方面的第一种至第二种中任一种可能实现方式，在第三种可能实现方式中，所述发送模块具体用于：
通过接收各个所述站点设备的所述请求操作帧的信道，向各个所述站点设备发送允许操作帧；或者，
通过为各个所述站点设备分配的信道，向各个所述站点设备发送允许操作帧；或者，
通过所述接入点设备的所述可用信道，以聚合的形式给所有成功发送请求操作帧的各个站点设备发送允许操作帧，所述允许操作包括所述接入点设备为每个成功发送请求操作帧的站点设备分配的信道的信息。
结合第四方面或第四方面的第一种至第三种中任一种可能实现方式，所述发送模块还用于：
通过所述接入点设备的可用信道发送携带预设值的信息。
本发明第五方面提供了一种站点设备，所述站点设备包括无线信号收发装置、存储器以及处理器，其中，存储器中存储一组程序代码，且处理器用于调用存储器中存储的程序代码，用于执行以下操作：
通过所述无线信号收发装置接收接入点设备发送的询问消息帧，所述询问消息帧包括第一指示信息，所述第一指示信息用于指示所述接入点设备的可用信道，所述接入点设备的可用信道包括多个空闲单信道或多个空闲子信道；
在所述接入点设备的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送请求操作帧，所述请求操作帧包括第二指示信息，所述第二指示信息用于指示所述站点设备的可用信道；
接收所述接入点设备发送的允许操作帧，所述允许操作帧包括所述接入点设备为所述站点设备分配的信道的信息；
在所述分配的信道上发送数据。
本发明第六方面提供了一种接入点设备，所述接入点设备包括无线信号收发装置、存储器以及处理器，其中，存储器中存储一组程序代码，且处理器用于调用存储器中存储的程序代码，用于执行以下操作：
通过可用信道发送询问消息帧，所述询问消息帧包括第一指示信息，所述第一指示信息用于指示所述接入点设备的可用信道，所述接入点设备的可用信道包括多个空闲单信道或多个空闲子信道；
通过所述无线信号收发装置接收至少一个站点设备发送的请求操作帧，每个所述请求操作帧包括第二指示信息，所述第二指示信息用于指示所述站点设备的可用信道；
根据接收的所述请求操作帧为对应的站点设备分配信道；
通过所述无线信号收发装置向各个所述站点设备发送允许操作帧，所述允许操作帧包括所述接入点设备为各个所述站点设备分配的信道的信息，以使各个所述站点设备在所述分配的信道上发送数据。
本发明第七方面提供了一种计算机存储介质，所述计算机存储介质存储有 程序，该程序执行时包括第一方面提供的信道接入的方法的部分或全部步骤。
本发明第八方面提供了一种计算机存储介质，所述计算机存储介质存储有程序，该程序执行时包括第二方面提供的信道接入的方法的部分或全部步骤。
本发明实施例第九方面还提供一种信道接入的系统，所述系统包括接入点设备和至少一个站点设备，其中，
所述站点设备如第三方面，或者第三方面的第一种可能实现方式，或者第三方面的第二种可能实现方式，或者第三方面的第三种可能实现方式，或者第三方面的第四种可能实现方式，或者第三方面的第五种可能实现方式，或者第三方面的第六种可能实现方式，或者第三方面的第七种可能实现方式，或者第三方面的第八种可能实现方式，或者第三方面的第九种可能实现方式中的站点设备；
所述接入点设备如第四方面，或者第四方面的第一种可能实现方式，或者第四方面的第二种可能实现方式，或者第四方面的第三种可能实现方式，或者第四方面的第四种可能实现方式中的接入点设备。
由上可见，接入点提供的可用信道包括多个空闲单信道或多个空闲子信道，站点设备在该可用信道中随机选择至少一条空闲单信道或至少一条空闲子信道发送请求操作帧，每次可以有多个站点设备可以同时反馈请求操作帧，相比现有技术中，每次只能有一个站点设备反馈请求操作帧而言，提高了接入点为站点设备分配信道的效率，进而，提高了站点设备接入网络的效率，从而，提高了数据吞吐量。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例提供的一种应用场景示意图；
图2是本发明实施例提供的一种信道接入的方法流程示意图；
图3是本发明实施例提供的另一种信道接入的方法流程示意图；
图4是本发明实施例提供的一种资源调度的示意图；
图5是本发明实施例提供的另一种资源调度的示意图；
图6是本发明实施例提供的一种站点设备的结构示意图；
图7是本发明实施例提供的另一种站点设备的结构示意图；
图8是本发明实施例提供的又一种站点设备的结构示意图；
图9是本发明实施例提供的一种接入点设备的结构示意图；
图10是本发明实施例提供的另一种接入点设备的结构示意图；
图11是本发明实施例提供的一种信道接入的系统结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例可以应用于无线局域网，所述无线局域网可以为包含接入点的基本服务集(简称：BSS，英文：Basic Service Set)。应理解地，在WIFI(英文：Wireless Fidelity，中文：无线保真)系统的基础网络结构下，网络中可以包括多个基本服务集，每个基本服务集可以包含一个接入点设备(英文：Access Point，简称AP)和多个关联于该AP的站点设备(英文：Station，简称STA)。
所述AP也称之为无线访问接入点或热点等。AP是移动用户进入有线网络的接入点，主要部署于家庭、大楼内部以及园区内部，典型覆盖半径为几十米至上百米，也可以部署于户外。AP相当于一个连接有线网和无线网的桥梁，其主要作用是将各个无线网络客户端连接到一起，然后将无线网络接入以太网。
AP主要采用的标准为IEEE(英文：Institute of Electrical and Electronics  Engineers，中文：电气和电子工程师协会)802.11系列。具体地，AP可以是带有WIFI芯片的终端设备或者网络设备。可选地，AP可以为支持802.11ax制式的设备。进一步可选地，该AP可以为支持802.11ac、802.11n、802.11g、802.11b及802.11a等多种WLAN(英文：Wireless Local Area Network，中文：无线局域网)制式的设备。
所述STA可以是无线通讯芯片、无线传感器或无线通信终端。例如：支持WIFI通讯功能的移动电话、支持WIFI通讯功能的平板电脑、支持WIFI通讯功能的机顶盒和支持WIFI通讯功能的计算机。可选地，站点可以支持802.11ax制式，进一步可选地，该站点支持802.11ac、802.11n、802.11g、802.11b及802.11a等多种WLAN制式。
为了便于理解，请参阅图1，图1是本发明实施例提供的一种应用场景示意图。本应用场景包括1个AP和4个STA，可理解的是，在实际应用中可能存在更多或更少数目的STA，本发明不做限定，另外，对于多个AP的情形，可以针对每个AP和其覆盖的STA应用本发明。
下面结合具体实施例，进一步阐明本发明，应理解为这些实施例仅用于说明本发明而不用于限制本发明的范围，在阅读了本发明之后，本领域技术人员对本发明的各种等价形式的修改均落于本申请所附权利要求所限定的范围。
请参阅图2，图2是本发明实施例提供的一种信道接入的方法流程示意图。本发明实施例是从STA角度描述的。如图2所示本发明实施例中的信道接入的方法可以包括：
S201，STA接收AP发送的询问消息帧，所述询问消息帧包括第一指示信息，所述第一指示信息用于指示该AP的可用信道，该AP的可用信道包括多个空闲单信道或多个空闲子信道。
询问消息帧(Request-Request To Send，简称：RRTX)包括第一指示信息，该第一指示信息用于指示该AP的可用信道，假设该AP可以在规定的13个信道上通信，但该AP侦听到在这13个信道中，只有3个是空闲，AP可以将该 3个信道作为可用信道；
其中，第一指示信息可以通过每个信道的中心频率指示可用信道；STA和AP也可以预先定义每个信道的识别号，第一指示信息可以通过识别号指示可用信道。
其中，单信道的带宽可以是20MHz、30MHz、80MHz或160MHz等，本发明实施例以20MHz为例；若将20MHz的信道在频域上划分为多个部分，每个部分即为一个子信道，例如，将20MHz的信道在频域上平均分成4个部分，即4个子信道，每个子信道的带宽为5MHz。
AP的可用信道可以只包括多个空闲单信道，也可以只包括多个空闲子信道，也可以同时包括多个空闲单信道和多个空闲子信道，AP的可用信道可以是连续的信道，也可以是离散的信道，本发明不做限定。
需要指出的是，本发明实施例所提出的获取STA请求的方法流程只表示了基本服务集中同时执行的多个STA中的其中一个STA的处理流程，所述STA可以是其多个STA中的任一STA。
S202，STA在AP的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向AP发送请求操作帧，所述请求操作帧包括第二指示信息，所述第二指示信息用于指示该STA的可用信道。
请求操作帧(Request To X，简称：RTX)表示请求某个操作，“X”表示该操作，如该操作为请求发送帧(英文：Request To Sent，简称：RTS)，则RTX为RTS，需要说明的是，该操作具体不限定；
优选地，STA可以在第一指示信息指示的可用信道中，随机选择至少一个空闲单信道，或至少一个空闲子信道，或者至少一个空闲单信道和至少一个空闲子信道向AP发送RTX；
可选地，STA当接收到AP发送的RRTX时，可以侦听可用信道，再在侦听到的可用信道和第一指示信息指示的可用信道的交集信道中，随机选择至少一个空闲单信道，或至少一个空闲子信道，或者至少一个空闲单信道和至少一个空闲子信道向AP发送RTX；假设，第一指示信息指示的可用信道为信道2、 3和4，STA侦听到的可用信道为信道1、2和3，则交集信道为信道2和3，STA在信道2和3中随机选择至少一个信道发送RTX；
若STA只选择了一个信道，如一个空闲单信道，或者一个空闲子信道，STA则在该信道上发送RTX；若STA选择了多信道，如至少两个空闲单信道，或者至少两个空闲子信道，或者空闲单信道和空闲子信道的组合，STA则同时在该多个信道上发送RTX；
其中，RTX还可以包括该STA待发送的缓存数据的数据信息，该数据信息可以包括该缓存数据的业务类型(如语音或视频等)、数据长度、延时信息等，以使AP根据该数据信息为STA分配的信道更有利于该缓存数据的发送。
进一步可选地，当STA接收到AP发送的RRTX之后，该STA可以等待至少一个时间长度，才根据RRTX，选择反馈信道，其中，时间长度可以包括SIFS(英文：Short Inter-frame Space，中文：短帧间间隙)、PIFS(英文：PCF Inter-frame Space，中文：点帧间间隙)、DIFS(英文：Distributed Inter-frame Spacing，中文：分布式帧间间隙)和AIFS(英文：Arbitration Inter-frame Space，中文：仲裁帧间间隙)中的任意一种或组合。
在一种可选的实施方式中，当STA接收到AP发送的RRTX时，STA可以生成一个随机值，判断生成的所述随机值是否小于预设值，如果，生成的该随机值小于或等于所述预设值，STA才在AP的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向AP发送RTX；如果，生成的随机值大于所述预设值，STA则结束本流程，减小了不同STA之间的数据冲突的概率，从而，提高了系统的效率。
其中，STA在判断生成的随机值是否小于预设值之前，还可以接收AP发送的携带所述预设值的信息，携带所述预设值的信息可以是RRTX，也可以是其他消息帧，本发明不做限定。
在另一种可选的实施方式中，当STA接收到AP发送的RRTX时，STA可以获取一个随机退避数，再将获取的该随机退避数作为退避计数器的初始值进行退避，其中，每空闲一个时隙，则该退避计数器的数值减一，当该退避计 数器的数值减为零时，STA才在AP的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向AP发送RTX，通过退避，减小了不同STA之间的数据冲突的概率，从而，提高了系统的效率；
其中，STA可以在0～预设阈值内获取一个随机退避数，该预设阈值是可变的，STA可以根据最近一次发送RTX成功与否而改变该预设阈值的大小，例如，STA最近一次发送RTX失败，说明发送的RTX与其他STA发生送的RTX发生冲突，则增大该预设阈值，以减小获取到相同随机退避数的概率，进而，减少同时退避到零的STA的数目；AP也可以根据AP的可用信道的情况调整该预设阈值，例如，AP的可用信道较少，如小于预设信道阈值，AP可以增大该预设阈值，以减小获取到相同随机退避数的概率，进而，减少同时退避到零的STA的数目；
其中，每空闲一个时隙可以包括AP的可用信道全部空闲一个时隙，或者，AP的可用信道和STA的可用信道的交集信道全部空闲一个时隙，或者，AP的可用信道的主信道空闲一个时隙；
若STA在AP的可用信道的所有信道上退避，假设，该预设阈值为9，当STA接收到AP发送的RRTX时，STA可以在0～9内获取一个随机退避数，该随机退避数以6为例，STA将退避计数器的初始值设置为6进行退避，若当前时隙AP的可用信道的所有信道不是全部空闲，即至少一个空闲单信道或至少一个空闲子信道被占用，说明AP的可用信道已经被先退避到零的其他STA占用，STA则停止退避，结束本流程；若当前时隙AP的可用信道的所有信道都空闲，说明还没有其他STA先退避到零，则退避计数器减一；直到退避计数器减为零，STA才在AP的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向AP发送RTX；
若STA在AP的可用信道和STA的可用信道的交集信道上退避，假设，该预设阈值为9，当STA接收到AP发送的RRTX时，STA可以在0～9内获取一个随机退避数，该随机退避数以6为例，STA将退避计数器的初始值设置为6进行退避，若当前时隙该交集信道不是全部空闲，即至少一个空闲单信道或 至少一个空闲子信道被占用，说明该交集信道已经被先退避到零的其他STA占用，STA则停止退避，结束本流程；若当前时隙该交集信道都空闲，说明还没有其他STA先退避到零，则退避计数器减一；直到退避计数器减为零，STA才在AP的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向AP发送RTX；
若STA在AP的可用信道的主信道上退避，假设，该预设阈值为9，当STA接收到AP发送的RRTX时，STA可以在0～9内获取一个随机退避数，该随机退避数以6为例，STA将退避计数器的初始值设置为6进行退避，若当前时隙该主信道不是空闲，说明该主信道已经被先退避到零的其他STA占用，STA则停止退避，结束本流程；若当前时隙该主信道空闲，说明还没有其他STA先退避到零，则退避计数器减一；直到退避计数器减为零，STA才在AP的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向AP发送RTX；
其中，若STA在AP的可用信道的主信道上退避，STA在AP的可用信道中选择的信道至少包括该主信道，或者该主信道中的至少一个子信道，也就是说，STA在AP的可用信道中选择的信道可以包括：所述主信道，或者所述主信道和至少一个从信道，或者所述主信道和从信道中的至少一个子信道，或者所述主信道中的至少一个子信道，或者所述主信道中的至少一个子信道和从信道中的至少一个子信道，或者所述主信道中的至少一个子信道和至少一个所述从信道；
STA在退避过程中要求退避信道全部空闲，在这种情况下，只有同时退避到零的STA才可以发起RTX，即所有的RTX都是同时发送的。反之，如果STA只是侦听到一个或者部分退避信道空闲就进行退避，会导致不同STA在不同时间发送的RTX。多个RTX不同时发送会给AP带来接收困难的问题。比如STA1首先在信道A上发送RTX1，过一段时间之后STA2在信道B上又发送RTX2，按照标准协议AP在接收完RTX1之后，间隔SIFS时间需要回复允许操作帧，但是此时RTX2还为接收完毕，而AP不具备同时进行发送和接 收的功能，因此就不能够即回复允许操作帧，又同时继续接收RTX2。总结一下就是，STA在退避过程中要求退避信道全部空闲，可以保证多个STA的RTX是同时发送的，保证了只有单工(一个时间只能进行发送或者接收)的AP能够顺利接收多个STA的RTX，并且顺利回复允许操作帧；
其中，退避信道可以包括AP的可用信道的所有信道，或者AP的可用信道和STA的可用信道的交集信道，或者AP的可用信道的主信道。
S203，STA接收AP发送的允许操作帧，该允许操作帧包括该AP为该STA分配的信道的信息；
允许操作帧(Clear To X，简称：CTX)表示允许某个操作，“X”表示该操作，如该操作为允许发送帧(英文：Clear To Sent，简称：CTS)，则CTX为CTS，需要说明的是，该操作具体不限定；
其中，CTX可以通过每个信道的中心频率指示为STA分配的信道；STA和AP也可以预先定义每个信道的识别号，CTX也可以通过识别号指示为STA分配的信道。
如果，STA没有接收到AP发送的CTX，说明STA没有成功发送RTX，如STA发送的RTX与其他STA发送的RTX发送冲突，STA只有等待下一次AP发送的RRTX；
其中，AP如何根据接收的RTX为STA分配信道是本领域技术人员可理解的，在此不再赘述。
S204，STA在分配的信道上发送数据。
STA当接收到AP发送的CTX时，可以获取AP为STA分配的信道，再在该信道上发送待发送的缓存数据；
其中，STA当接收到AP发送的CTX时，还可以等待至少一个时间长度，在该信道上发送待发送的缓存数据，其中，所述时间长度包括SIFS、PIFS、DIFS和AIFS中的任意一种或组合。
在图2所示的实施例中，AP提供的可用信道包括多个空闲单信道或多个空闲子信道，STA在该可用信道中随机选择至少一条空闲单信道或至少一条空 闲子信道发送RTX，每次可以有多个STA可以同时反馈RTX，相比现有技术中，每次只能有一个STA反馈RTX而言，提高了AP为STA分配信道的效率，进而，提高了网络的接入效率，从而，提高了数据吞吐量。
请参阅图3，图3是本发明实施例提供的另一种信道接入的方法流程示意图。本发明实施例是从AP角度描述的。如图3所示本发明实施例中的信道接入的方法可以包括：
S301，AP通过可用信道发送询问消息帧，所述询问消息帧包括第一指示信息，所述第一指示信息用于指示AP的可用信道，AP的可用信道包括多个空闲单信道或多个空闲子信道。
具体地，当AP侦听到多个空闲单信道或多个空闲子信道时，AP可以通过至少一个空闲单信道或空闲子信道发送RRTX，该RRTX用于指示该AP的可用信道，假设，协议规定该AP可以在规定的13个信道上通信，但该AP侦听到在这13个信道中，只有3个是空闲，AP可以将该3个信道作为可用信道；
其中，RRTX可以通过每个信道的中心频率指示可用信道；STA和AP也可以预先定义每个信道的识别号，RRTX通过识别号指示可用信道。
其单信道的带宽可以是20MHz、30MHz、80MHz或160MHz等，本发明实施例以20MHz为例；若将20MHz的信道在频域上划分为多个部分，每个部分即为一个子信道，每个子信道的带宽为5MHz。
AP的可用信道可以只包括多个空闲单信道，也可以只包括多个空闲子信道，也可以同时包括多个空闲单信道和多个空闲子信道，AP的可用信道可以是连续的信道，也可以是离散的信道，本发明不做限定；
可选地，AP可以同时在所有的所述空闲单信道或所述空闲子信道上发送RRTX，通过占用侦听到的可用信道，以避免被其他AP占用；
其中，该可用信道可以是预留信道，也就是说，当AP侦听到多个空闲信道时，先发送通知帧告知其他设备其空闲信道在指定时间段内被占用，那么， 其他设备在该指定时间段内，即使检测到该空闲信道，也不会占用该空闲信道。
进一步地，AP还可以向STA发送预设值；其中，AP可以通过RRTX发送该预设值，也可以通过其他消息帧发送预设值，本发明不做限定；其中，AP可以在对预设值进行调整时，才向STA发送该预设值，也可以，每次向STA发送RRTX时就发送。
S302，AP接收至少一个STA发送的RTX，每个RTX包括第二指示信息，该第二指示信息用于指示STA的可用信道。
第二指示信息用于指示其STA侦听到的可用信道，可以通过每个信道的中心频率指示可用信道；STA和AP预先定义每个信道的识别号，也可以通过识别号指示可用信道。
S303，AP根据接收的RTX为对应的STA分配信道。
具体地，当AP接收到至少一个STA发送的RTX时，AP可以根据每个RTX携带的第二指示信息，为对应的STA分配信道。
进一步地，每个所述RTX还包括对应STA的缓存数据的数据信息，AP可以根据各个STA的第二指示信息和缓存数据的数据信息为各个STA分配信道，使AP为各个RTX分配的信道有利于各个RTX的缓存数据的传输。
S304，AP向各个STA发送CTX，该CTX包括AP为各个STA分配的信道的信息，以使各个STA在分配的信道上发送数据。
具体地，AP可以通过以下三种方式中的任一种方式向各个STA发送CTX：
第一种，通过接收各个STA的RTX的信道，向对应的STA发送CTX。请参阅图4，图4是本发明实施例提供的一种信道分配的示意图，如图4所示，AP的可用信道包括3个空闲单信道，假设由上到下依次为，信道1、信道2和信道4，信道3处于繁忙状态，且AP通过信道1接收STA1的RTX1，通过信道2接收STA2的RTX2，通过信道4接收STA3的RTX3，则AP可以通过信道1向STA1发送CTX1，通过信道2向STA2发送CTX2，通过信道4向STA3发送CTX3，各个CTX中包括为对应STA分配的信道的信息；
第二种，AP可以通过为各个STA分配的信道，向各个STA发送允许操 作帧；请参阅图5，图5是本发明实施例提供的另一种信道分配的示意图，如图5所示，AP的可用信道包括3个空闲单信道，假设由上到下依次为，信道1、信道2和信道4，信道3处于繁忙状态，且AP通过信道1接收STA1的RTX1，通过信道2接收STA2的RTX2，由于，信道4上的RTX3和RTX4发生冲突，AP无法接收信道4上的信息，因此，AP只为STA1和STA1分配信道，假设，AP为STA1分配的信道为信道1和信道2，为STA2分配的信道为信道4，则AP可以通过信道1和信道2向STA1发送CTX1，通过信道4向STA2发送CTX2，各个CTX中包括为对应STA分配的信道的信息；
第三种，AP通过AP的可用信道，以聚合的形式给所有成功发送RTX的STA发送CTX，即在AP的可用信道的每个信道上同时发送相同的CTX，该CTX包括AP为每个成功发送RTX的STA分配的信道的信息，如图5所示，STA1和STA2为成功发送RTX的STA，STA3和STA4由于发送的RTX3和RTX4发生冲突，因此，STA1和STA2不是成功发送RTX的STA；具体地，当AP为每个成功发送RTX的STA分配信道之后，AP可以生成CTX，该CTX携带的AP为每个成功发送RTX的STA分配的信道的信息，再在AP的可用信道的所有信道上同时发送该CTX。
需要说明的是，AP为STA发送CTX的方式包括但不仅限于以上3种。
在图3所示的实施例中，AP可以为STA提供多个空闲单信道或多个空闲子信道，进而，AP每次可以接收多个STA同时反馈RTX，相比现有技术中，每次只能接收一个STA反馈的RTX而言，提高了AP为STA分配信道的效率，进而，提高了网络的接入效率，从而，提高了数据吞吐量。
请参阅图6，图6是本发明实施例提供的一种STA的结构示意图。如图6所示本发明实施例中的STA至少可以包括接收模块61和处理模块62，其中：
接收模块61，用于接收AP发送的RRTX，该RRTX包括第一指示信息，第一指示信息用于指示AP的可用信道，AP的可用信道包括多个空闲单信道或多个空闲子信道；
处理模块62，用于在AP的可用信道中选择至少一个该空闲单信道或至少一个该空闲子信道向AP发送RTX，该RTX包括第二指示信息，第二指示信息用于指示STA的可用信道；
接收模块61还用于：
接收AP发送的CTX，CTX包括AP为STA分配的信道的信息；
处理模块62还用于：
在分配的信道上发送数据。
进一步地，如图7所示STA还可以包括侦听模块63，其中：
侦听模块63，用于侦听可用信道；
处理模块62具体可以用于：
在AP的可用信道和STA的可用信道的交集信道中选择至少一个该空闲单信道或至少一个该空闲子信道向AP发送RTX。
在一种可选的实施方式中，如图7所示STA进一步还可以包括：随机值生成模块64和判断模块65，其中：
随机值生成模块64，用于生成一个随机值；
判断模块65，用于判断生成的随机值是否小于预设值，若是，则触发该处理模块62在AP的可用信道中选择至少一个该空闲单信道或至少一个该空闲子信道向AP发送RTX。
判断模块65还可以用于：
判断生成的该随机值是否小于预设值，若是，则触发该处理模块62在AP的可用信道和STA的可用信道的交集信道中选择至少一个该空闲单信道或至少一个该空闲子信道向AP发送RTX。
进一步地，接收模块61还可以用于：
接收AP发送的携带预设值的信息。
在另一种可选的实施方式中，如图7所示STA进一步还可以包括：随机退避数获取模块66和退避模块67，其中：
随机退避数获取模块66，用于获取一个随机退避数；
退避模块67，用于将获取的该随机退避数作为退避计数器的初始值进行退避，其中，每空闲一个时隙，退避计数器的数值减一，当退避计数器的数值减为零时，触发处理模块62在AP的可用信道中选择至少一个该空闲单信道或至少一个该空闲子信道向AP发送RTX。
退避模块67还可以用于：
将获取的该随机退避数作为退避计数器的初始值进行退避，其中，每空闲一个时隙，退避计数器的数值减一，当退避计数器的数值减为零时，触发处理模块62在AP的可用信道和STA的可用信道的交集信道中选择至少一个该空闲单信道或至少一个该空闲子信道向AP发送RTX。
其中，每空闲一个时隙包括AP的可用信道全部空闲一个时隙，或者，AP的可用信道和STA的可用信道的交集信道全部空闲一个时隙，或者，AP的可用信道的主信道空闲一个时隙。
其中，若每空闲一个时隙为AP的可用信道的主信道空闲一个时隙，则处理模块62选择的信道至少包括主信道，或者主信道中的至少一个子信道。
进一步地，处理模块62还可以用于：
当接收模块61接收到RRTX时，等待至少一个时间长度，才在AP的可用信道中选择至少一个该空闲单信道或至少一个该空闲子信道向AP发送RTX，或者，在AP的可用信道和STA的可用信道的交集信道中选择至少一个该空闲单信道或至少一个该空闲子信道向AP发送RTX，其中，时间长度包括SIFS、PIFS、DIFS和AIFS中的任意一种或组合。
可理解的是，本实施例的STA的各功能模块的功能可根据上述方法实施例中的方法具体实现，可以具体对应参考图2方法实施例的相关描述，此处不再赘述。
请参阅图8，图8是本发明实施例提供的又一种STA的结构示意图，如图8所示，该STA可以包括：至少一个处理器81，例如CPU，至少一个通信总线82，无线信号收发装置83以及存储器84。其中，无线信号收发装置83用 于收发信号，例如RRTX、RTX、CTX等；通信总线82用于实现这些组件之间的连接通信。存储器84可以是高速RAM存储器，也可以是非非易失性存储器(non-volatile memory)，例如至少一个磁盘存储器。存储器84中存储一组程序代码，且处理器81用于调用存储器84中存储的程序代码，用于执行以下操作：
通过无线信号收发装置83接收AP发送的RRTX，RRTX包括第一指示信息，第一指示信息用于指示AP的可用信道，AP的可用信道包括多个空闲单信道或多个空闲子信道；
在AP的可用信道中选择至少一个该空闲单信道或至少一个该空闲子信道向该AP发送RTX，RTX包括第二指示信息，第二指示信息用于指示STA的可用信道；
接收AP发送的CTX，CTX包括AP为该STA分配的信道的信息；
在分配的信道上发送数据。
进一步地，处理器81还可以调用存储器84中的存储代码执行以下操作：
侦听可用信道；
处理器81调用存储器84中的存储代码在AP的可用信道中选择至少一个该空闲单信道或至少一个该空闲子信道向AP发送RTX具体可以为：
在AP的可用信道和STA的可用信道的交集信道中选择至少一个该空闲单信道或至少一个该空闲子信道向AP发送RTX。
在一种可选的实施方式中，处理器81还可以调用存储器84中的存储代码执行以下操作：
生成一个随机值；
判断生成的该随机值是否小于预设值；
若是，则执行在AP的可用信道中选择至少一个该空闲单信道或至少一个该空闲子信道向AP发送RTX的步骤。
在另一种可选的实施方式中，处理器81还可以调用存储器84中的存储代码执行以下操作：
生成一个随机值；
判断生成的该随机值是否小于预设值；
若是，则执行在AP的可用信道和STA的可用信道的交集信道中选择至少一个该空闲单信道或至少一个该空闲子信道向AP发送RTX的步骤。
进一步地，处理器81调用存储器84中的存储代码判断生成的随机值是否小于预设值之前，还可以执行以下操作：
通过无线信号收发装置83接收AP发送的携带预设值的信息。
在又一种可选的实施方式中，处理器81还可以调用存储器84中的存储代码执行以下操作：
获取一个随机退避数；
将获取的随机退避数作为退避计数器的初始值进行退避，其中，每空闲一个时隙，该退避计数器的数值减一；
当该退避计数器的数值减为零时，则执行在AP的可用信道中选择至少一个该空闲单信道或至少一个该空闲子信道向AP发送RTX的步骤。
在又一种可选的实施方式中，处理器81还可以调用存储器84中的存储代码执行以下操作：
获取一个随机退避数；
将获取的该随机退避数作为退避计数器的初始值进行退避，其中，每空闲一个时隙，该退避计数器的数值减一；
当该退避计数器的数值减为零时，则执行在AP的可用信道和STA的可用信道的交集信道中选择至少一个该空闲单信道或至少一个该空闲子信道向AP发送RTX的步骤。
其中，每空闲一个时隙包括AP的可用信道全部空闲一个时隙，或者，AP的可用信道和STA的可用信道的交集信道全部空闲一个时隙，或者，AP的可用信道的主信道空闲一个时隙。
其中，若每空闲一个时隙为AP的可用信道的主信道空闲一个时隙，则处理器81选择的信道至少包括该主信道，或者该主信道中的至少一个子信道。
进一步地，处理器81在调用存储器84中的存储代码在AP的可用信道中选择至少一个该空闲单信道或至少一个该空闲子信道向AP发送RTX，或者，在AP的可用信道和STA的可用信道的交集信道中选择至少一个该空闲单信道或至少一个该空闲子信道向AP发送RTX之前，还可以执行以下操作：
等待至少一个时间长度，其中，该时间长度包括短帧间间隙SIFS、点帧间间隙PIFS、分布式帧间间隙DIFS和仲裁帧间间隙AIFS中的任意一种或组合。
可理解的是，本实施例的STA的各功能模块的功能可根据上述方法实施例中的方法具体实现，可以具体对应参考图2方法实施例的相关描述，此处不再赘述。
请参阅图9，图9是本发明实施例提供的一种AP的结构示意图。如图9所示本发明实施例中的站AP至少可以包括发送模块91、接收模块92以及处理模块93，其中：
发送模块91，用于通过可用信道发送RRTX，该RRTX包括第一指示信息，该第一指示信息用于指示AP的可用信道，AP的可用信道包括多个空闲单信道或多个空闲子信道；
接收模块92，用于接收至少一个STA发送的RTX，每个RTX包括第二指示信息，该第二指示信息用于指示STA的可用信道；
处理模块93，用于根据接收的RTX为对应的STA分配信道；
发送模块91还用于：
向各个STA发送CTX，该CTX包括AP为各个STA分配的信道的信息，以使各个STA在分配的信道上发送数据。
进一步地，每个RTX还包括对应STA的缓存数据的数据信息，处理模块92具体可以用于：
根据第二指示信息和数据信息为对应的STA分配信道。
其中，发送模块92具体可以用于：
同时在可用信道的所有信道上发送RRTX。
其中，发送模块91具体可以用于：
通过接收各个STA的RTX的信道，向各个STA发送CTX；或者，
通过为各个STA分配的信道，向各个STA发送CTX；或者，
通过AP的该可用信道，以聚合的形式给所有成功发送RTX的各个STA发送CTX，允许操作包括AP为每个成功发送RTX的STA分配的信道的信息。
进一步地，发送模块91还可以用于：
通过AP的可用信道发送携带预设值的信息。
可理解的是，本实施例的AP的各功能模块的功能可根据上述方法实施例中的方法具体实现，可以具体对应参考图3方法实施例的相关描述，此处不再赘述。
请参阅图10，图10是本发明实施例提供的又一种AP的结构示意图，如图10所示，该AP可以包括：至少一个处理器101，例如CPU，至少一个通信总线102，无线信号收发装置103以及存储器104。其中，无线信号收发装置103用于收发信号，例如RRTX、RTX、CTX等；通信总线102用于实现这些组件之间的连接通信。存储器104可以是高速RAM存储器，也可以是非非易失性存储器(non-volatile memory)，例如至少一个磁盘存储器。存储器104中存储一组程序代码，且处理器101用于调用存储器104中存储的程序代码，用于执行以下操作：
通过可用信道发送RRTX，RRTX包括第一指示信息，第一指示信息用于指示AP的可用信道，AP的可用信道包括多个空闲单信道或多个空闲子信道；
通过该无线信号收发103接收至少一个STA发送的RTX，每个RTX包括第二指示信息，该第二指示信息用于指示STA的可用信道；
根据接收的RTX为对应的STA分配信道；
通过该无线信号收发装置103向各个STA发送CTX，CTX包括AP为各个STA分配的信道的信息，以使各个STA在分配的信道上发送数据。
每个RTX还包括对应STA的缓存数据的数据信息，处理器101调用存储器104中的存储代码根据接收的RTX为对应的STA分配信道具体可以为：
根据第二指示信息和数据信息为对应的STA分配信道。
处理器101调用存储器104中的存储代码通过可用信道发送RRTX具体可以为：
同时在可用信道的所有信道上发送RRTX。
其中，处理器101通过无线信号收发装置103向各个STA发送CTX具体可以为：
通过接收各个STA的RTX的信道，向各个STA发送CTX；或者，
通过为各个STA分配的信道，向各个STA发送CTX；或者，
通过AP的该可用信道，以聚合的形式给所有成功发送RTX的各个STA发送CTX，该允许操作包括AP为每个成功发送RTX的STA分配的信道的信息。
进一步地，处理器101还可以调用存储器104中的存储代码执行以下操作：
通过AP的可用信道发送携带预设值的信息。
可理解的是，本实施例的AP的各功能模块的功能可根据上述方法实施例中的方法具体实现，可以具体对应参考图3方法实施例的相关描述，此处不再赘述。
请参阅图11，图11是本发明实施例提供的一种信道接入的系统结构示意图。本发明实施例提供的信道接入的系统包括AP和至少一个STA；其中，图11中的N表示STA的个数，N取整数。STA请参阅图6至图8对应的实施例，AP请参阅图9和图10对应的实施例，在此不再赘述。
本发明实施例还提出了一种计算机存储介质，所述计算机存储介质存储有程序，所述程序执行时包括本发明实施例结合图2所描述的方法中的部分或全部的步骤。
本发明实施例还提出了一种计算机存储介质，所述计算机存储介质存储有程序，所述程序执行时包括本发明实施例结合图3所描述的方法中的部分或全部的步骤。
本发明实施例方法中的步骤可以根据实际需要进行顺序调整、合并和删减。
本发明实施例装置中的模块可以根据实际需要进行合并、划分和删减。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不是必须针对相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
此外，术语“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。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
流程图中或在此以其他方式描述的任何过程或方法描述可以被理解为，表示包括一个或多个用于实现特定逻辑功能或过程的步骤的可执行指令的代码的模块、片段或部分，并且本发明的优选实施方式的范围包括另外的实现，其中可以不按所示出或讨论的顺序，包括根据所涉及的功能按基本同时的方式或按相反的顺序，来执行功能，这应被本发明的实施例所属技术领域的技术人员所理解。
在流程图中表示或在此以其他方式描述的逻辑和/或步骤，例如，可以被认为是用于实现逻辑功能的可执行指令的程序列表，可以具体实现在任何计算机可读介质中，以供指令执行系统、装置或设备(如基于计算机的系统、包括处理器的系统或其他可以从指令执行系统、装置或设备取指令并执行指令的系统)使用，或结合这些指令执行系统、装置或设备而使用。就本说明书而言， "计算机可读介质"可以是任何可以包含、存储、通信、传播或传输程序以供指令执行系统、装置或设备或结合这些指令执行系统、装置或设备而使用的装置。计算机可读介质的更具体的示例(非穷尽性列表)包括以下：具有一个或多个布线的电连接部(电子装置)，便携式计算机盘盒(磁装置)，随机存取存储器(RAM)，只读存储器(ROM)，可擦除可编辑只读存储器(EPROM或闪速存储器)，光纤装置，以及便携式光盘只读存储器(CDROM)。另外，计算机可读介质甚至可以是可在其上打印所述程序的纸或其他合适的介质，因为可以例如通过对纸或其他介质进行光学扫描，接着进行编辑、解译或必要时以其他合适方式进行处理来以电子方式获得所述程序，然后将其存储在计算机存储器中。
应当理解，本发明的各部分可以用硬件、软件、固件或它们的组合来实现。在上述实施方式中，多个步骤或方法可以用存储在存储器中且由合适的指令执行系统执行的软件或固件来实现。例如，如果用硬件来实现，和在另一实施方式中一样，可用本领域公知的下列技术中的任一项或他们的组合来实现：具有用于对数据信号实现逻辑功能的逻辑门电路的离散逻辑电路，具有合适的组合逻辑门电路的专用集成电路，可编程门阵列(PGA)，现场可编程门阵列(FPGA)等。
本技术领域的普通技术人员可以理解实现上述实施例方法携带的全部或部分步骤是可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，该程序在执行时，包括方法实施例的步骤之一或其组合。
此外，在本发明各个实施例中的各功能单元可以集成在一个处理模块中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。所述集成的模块如果以软件功能模块的形式实现并作为独立的产品销售或使用时，也可以存储在一个计算机可读取存储介质中。
上述提到的存储介质可以是只读存储器，磁盘或光盘等。尽管上面已经示 出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (35)

  1. 一种信道接入的方法，其特征在于，所述方法包括：
    站点设备接收接入点设备发送的询问消息帧，所述询问消息帧包括第一指示信息，所述第一指示信息用于指示所述接入点设备的可用信道，所述接入点设备的可用信道包括多个空闲单信道或多个空闲子信道；
    所述站点设备在所述接入点设备的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送请求操作帧，所述请求操作帧包括第二指示信息，所述第二指示信息用于指示所述站点设备的可用信道；
    所述站点设备接收所述接入点设备发送的允许操作帧，所述允许操作帧包括所述接入点设备为所述站点设备分配的信道的信息；
    所述站点设备在所述分配的信道上发送数据。
  2. 如权利要求1所述的方法，其特征在于，所述方法还包括：
    所述站点设备侦听可用信道；
    所述站点设备在所述接入点设备的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送请求操作帧包括：
    所述站点设备在所述接入点设备的可用信道和所述站点设备的可用信道的交集信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送所述请求操作帧。
  3. 如权利要求1所述的方法，其特征在于，所述方法还包括：
    所述站点设备生成一个随机值；
    所述站点设备判断生成的所述随机值是否小于预设值；
    若是，所述站点设备则执行所述在所述接入点设备的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送请求操作帧的步骤。
  4. 如权利要求2所述的方法，其特征在于，所述方法还包括：
    所述站点设备生成一个随机值；
    所述站点设备判断生成的所述随机值是否小于预设值；
    若是，所述站点设备则执行所述在所述接入点设备的可用信道和所述站点设备的可用信道的交集信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送所述请求操作帧的步骤。
  5. 如权利要求3-4任一项所述的方法，其特征在于，所述站点设备判断生成的所述随机值是否小于预设值之前，还包括：
    所述站点设备接收所述接入点设备发送的携带所述预设值的信息。
  6. 如权利要求1所述的方法，其特征在于，所述方法还包括：
    所述站点设备获取一个随机退避数；
    所述站点设备将获取的所述随机退避数作为退避计数器的初始值进行退避，其中，每空闲一个时隙，所述退避计数器的数值减一；
    当所述退避计数器的数值减为零时，所述站点设备则执行所述在所述接入点设备的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送请求操作帧的步骤。
  7. 如权利要求2所述的方法，其特征在于，所述方法还包括：
    所述站点设备获取一个随机退避数；
    所述站点设备将获取的所述随机退避数作为退避计数器的初始值进行退避，其中，每空闲一个时隙，所述退避计数器的数值减一；
    当所述退避计数器的数值减为零时，所述站点设备则执行所述在所述接入点设备的可用信道和所述站点设备的可用信道的交集信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送所述请求操作帧的步骤。
  8. 如权利要求6-7任一项所述的方法，其特征在于，所述每空闲一个时 隙包括所述接入点设备的可用信道全部空闲一个时隙，或者，所述接入点设备的可用信道和所述站点设备的可用信道的交集信道全部空闲一个时隙，或者，所述接入点设备的可用信道的主信道空闲一个时隙。
  9. 如权利要求6-7任一项所述的方法，其特征在于，若所述每空闲一个时隙为所述接入点设备的可用信道的主信道空闲一个时隙，则所述站点设备选择的信道至少包括所述主信道，或者所述主信道中的至少一个子信道。
  10. 如权利要求1-9任一项所述的方法，其特征在于，所述站点设备在所述接入点设备的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送请求操作帧之前，所述方法还包括：
    所述站点设备等待至少一个时间长度，其中，所述时间长度包括短帧间间隙SIFS、点帧间间隙PIFS、分布式帧间间隙DIFS和仲裁帧间间隙AIFS中的任意一种或组合。
  11. 一种信道接入的方法，其特征在于，所述方法包括：
    接入点设备通过可用信道发送询问消息帧，所述询问消息帧包括第一指示信息，所述第一指示信息用于指示所述接入点设备的可用信道，所述接入点设备的可用信道包括多个空闲单信道或多个空闲子信道；
    所述接入点设备接收至少一个站点设备发送的请求操作帧，每个所述请求操作帧包括第二指示信息，所述第二指示信息用于指示所述站点设备的可用信道；
    所述接入点设备根据接收的所述请求操作帧为对应的站点设备分配信道；
    所述接入点设备向各个所述站点设备发送允许操作帧，所述允许操作帧包括所述接入点设备为各个所述站点设备分配的信道的信息，以使各个所述站点设备在所述分配的信道上发送数据。
  12. 如权利要求11所述的方法，其特征在于，每个所述请求操作帧还包括对应站点设备的缓存数据的数据信息，所述接入点设备根据接收的所述请求 操作帧为对应的站点设备分配信道包括：
    所述接入点设备根据所述第二指示信息和所述数据信息为对应的站点设备分配信道。
  13. 如权利要求11-12任一项所述的方法，其特征在于，所述接入点设备通过可用信道发送询问消息帧包括：
    所述接入点设备同时在所述可用信道的所有信道上发送所述询问消息帧。
  14. 如权利要求11-13任一项所述的方法，其特征在于，所述接入点设备向各个所述站点设备发送允许操作帧包括：
    所述接入点设备通过接收各个所述站点设备的所述请求操作帧的信道，向各个所述站点设备发送允许操作帧；或者，
    所述接入点设备通过为各个所述站点设备分配的信道，向各个所述站点设备发送允许操作帧；或者，
    所述接入点设备通过所述接入点设备的所述可用信道，以聚合的形式给所有成功发送请求操作帧的各个站点设备发送允许操作帧，所述允许操作包括所述接入点设备为每个成功发送请求操作帧的站点设备分配的信道的信息。
  15. 如权利要求11-14任一项所述的方法，其特征在于，所述方法还包括：
    所述接入点设备通过所述接入点设备的可用信道发送携带预设值的信息。
  16. 一种站点设备，其特征在于，所述站点设备包括：
    接收模块，用于接收接入点设备发送的询问消息帧，所述询问消息帧包括第一指示信息，所述第一指示信息用于指示所述接入点设备的可用信道，所述接入点设备的可用信道包括多个空闲单信道或多个空闲子信道；
    处理模块，用于在所述接入点设备的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送请求操作帧，所述请求操作帧包括第二指示信息，所述第二指示信息用于指示所述站点设备的可用信道；
    所述接收模块还用于：
    接收所述接入点设备发送的允许操作帧，所述允许操作帧包括所述接入点设备为所述站点设备分配的信道的信息；
    所述处理模块还用于：
    在所述分配的信道上发送数据。
  17. 如权利要求16所述的站点设备，其特征在于，所述站点设备还包括：
    侦听模块，用于侦听可用信道；
    所述处理模块具体用于：
    在所述接入点设备的可用信道和所述站点设备的可用信道的交集信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送所述请求操作帧。
  18. 如权利要求16所述的站点设备，其特征在于，所述站点设备还包括：
    随机值生成模块，用于生成一个随机值；
    判断模块，用于判断生成的所述随机值是否小于预设值，若是，则触发所述处理模块在所述接入点设备的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送请求操作帧。
  19. 如权利要求17所述的站点设备，其特征在于，所述站点设备还包括：
    随机值生成模块，用于生成一个随机值；
    判断模块，用于判断生成的所述随机值是否小于预设值，若是，则触发所述处理模块在所述接入点设备的可用信道和所述站点设备的可用信道的交集信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送所述请求操作帧。
  20. 如权利要求18-19任一项所述的站点设备，其特征在于，所述接收模块还用于：
    接收所述接入点设备发送的携带所述预设值的信息。
  21. 如权利要求16所述的站点设备，其特征在于，所述站点设备还包括：
    随机退避数获取模块，用于获取一个随机退避数；
    退避模块，用于将获取的所述随机退避数作为退避计数器的初始值进行退避，其中，每空闲一个时隙，所述退避计数器的数值减一，当所述退避计数器的数值减为零时，触发所述处理模块在所述接入点设备的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送请求操作帧。
  22. 如权利要求17所述的站点设备，其特征在于，所述站点设备还包括：
    随机退避数值获取模块，用于获取一个随机退避数；
    退避模块，用于将获取的所述随机退避数作为退避计数器的初始值进行退避，其中，每空闲一个时隙，所述退避计数器的数值减一，当所述退避计数器的数值减为零时，触发所述处理模块在所述接入点设备的可用信道和所述站点设备的可用信道的交集信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送所述请求操作帧。
  23. 如权利要求21-22任一项所述的站点设备，其特征在于，所述每空闲一个时隙包括所述接入点设备的可用信道全部空闲一个时隙，或者，所述接入点设备的可用信道和所述站点设备的可用信道的交集信道全部空闲一个时隙，或者，所述接入点设备的可用信道的主信道空闲一个时隙。
  24. 如权利要求21-22任一项所述的站点设备，其特征在于，若所述每空闲一个时隙为所述接入点设备的可用信道的主信道空闲一个时隙，则所述处理模块选择的信道至少包括所述主信道，或者所述主信道中的至少一个子信道。
  25. 如权利要求16-24任一项所述的站点设备，其特征在于，所述处理模块还用于：
    在等待至少一个时间长度时，才在所述接入点设备的可用信道中选择至少 一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送请求操作帧，其中，所述时间长度包括SIFS、PIFS、DIFS和AIFS中的任意一种或组合。
  26. 一种接入点设备，其特征在于，所述接入点设备包括：
    发送模块，用于通过可用信道发送询问消息帧，所述询问消息帧包括第一指示信息，所述第一指示信息用于指示所述接入点设备的可用信道，所述接入点设备的可用信道包括多个空闲单信道或多个空闲子信道；
    接收模块，用于接收至少一个站点设备发送的请求操作帧，每个所述请求操作帧包括第二指示信息，所述第二指示信息用于指示所述站点设备的可用信道；
    处理模块，用于根据接收的所述请求操作帧为对应的站点设备分配信道；
    所述发送模块还用于：
    向各个所述站点设备发送允许操作帧，所述允许操作帧包括所述接入点设备为各个所述站点设备分配的信道的信息，以使各个所述站点设备在所述分配的信道上发送数据。
  27. 如权利要求26所述的接入点设备，其特征在于，每个所述请求操作帧还包括对应站点设备的缓存数据的数据信息，所述处理模块具体用于：
    根据所述第二指示信息和所述数据信息为对应的站点设备分配信道。
  28. 如权利要求26-27任一项所述的接入点设备，其特征在于，所述发送模块具体用于：
    同时在所述可用信道的所有信道上发送所述询问消息帧。
  29. 如权利要求26-28任一项所述的接入点设备，其特征在于，所述发送模块具体用于：
    通过接收各个所述站点设备的所述请求操作帧的信道，向各个所述站点设备发送允许操作帧；或者，
    通过为各个所述站点设备分配的信道，向各个所述站点设备发送允许操作帧；或者，
    通过所述接入点设备的所述可用信道，以聚合的形式给所有成功发送请求操作帧的各个站点设备发送允许操作帧，所述允许操作包括所述接入点设备为每个成功发送请求操作帧的站点设备分配的信道的信息。
  30. 如权利要求26-29任一项所述的接入点设备，其特征在于，所述发送模块还用于：
    通过所述接入点设备的可用信道发送携带预设值的信息。
  31. 一种站点设备，其特征在于，所述站点设备包括无线信号收发装置、存储器以及处理器，其中，存储器中存储一组程序代码，且处理器用于调用存储器中存储的程序代码，用于执行以下操作：
    通过所述无线信号收发装置接收接入点设备发送的询问消息帧，所述询问消息帧包括第一指示信息，所述第一指示信息用于指示所述接入点设备的可用信道，所述接入点设备的可用信道包括多个空闲单信道或多个空闲子信道；
    在所述接入点设备的可用信道中选择至少一个所述空闲单信道或至少一个所述空闲子信道向所述接入点设备发送请求操作帧，所述请求操作帧包括第二指示信息，所述第二指示信息用于指示所述站点设备的可用信道；
    接收所述接入点设备发送的允许操作帧，所述允许操作帧包括所述接入点设备为所述站点设备分配的信道的信息；
    在所述分配的信道上发送数据。
  32. 一种接入点设备，其特征在于，所述接入点设备包括无线信号收发装置、存储器以及处理器，其中，存储器中存储一组程序代码，且处理器用于调用存储器中存储的程序代码，用于执行以下操作：
    通过可用信道发送询问消息帧，所述询问消息帧包括第一指示信息，所述第一指示信息用于指示所述接入点设备的可用信道，所述接入点设备的可用信道包括多个空闲单信道或多个空闲子信道；
    通过所述无线信号收发装置接收至少一个站点设备发送的请求操作帧，每个所述请求操作帧包括第二指示信息，所述第二指示信息用于指示所述站点设备的可用信道；
    根据接收的所述请求操作帧为对应的站点设备分配信道；
    通过所述无线信号收发装置向各个所述站点设备发送允许操作帧，所述允许操作帧包括所述接入点设备为各个所述站点设备分配的信道的信息，以使各个所述站点设备在所述分配的信道上发送数据。
  33. 一种计算机存储介质，其特征在于，所述计算机存储介质存储有程序，所述程序执行时包括权利要求1-10任一项所述的步骤。
  34. 一种计算机存储介质，其特征在于，所述计算机存储介质存储有程序，所述程序执行时包括权利要求11-15任一项所述的步骤。
  35. 一种信道接入的系统，其特征在于，所述系统包括接入点设备和至少一个站点设备，其中：
    所述站点设备为如权利要求16-25任一项所述的站点设备；
    所述接入点设备为如权利要求26-30任一项所述的接入点设备。
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