WO2021147934A1 - 无线网络的传输方法、装置、通信节点及存储介质 - Google Patents

无线网络的传输方法、装置、通信节点及存储介质 Download PDF

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Publication number
WO2021147934A1
WO2021147934A1 PCT/CN2021/072996 CN2021072996W WO2021147934A1 WO 2021147934 A1 WO2021147934 A1 WO 2021147934A1 CN 2021072996 W CN2021072996 W CN 2021072996W WO 2021147934 A1 WO2021147934 A1 WO 2021147934A1
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Prior art keywords
ppdu
nav
identification information
access point
point transmission
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PCT/CN2021/072996
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English (en)
French (fr)
Inventor
孙桑
李楠
杨丹
韩志强
孙波
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中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US17/782,852 priority Critical patent/US20230007708A1/en
Priority to EP21744123.7A priority patent/EP4096338A4/en
Priority to JP2022533572A priority patent/JP7481445B2/ja
Publication of WO2021147934A1 publication Critical patent/WO2021147934A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H04W74/0816—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points

Definitions

  • This application relates to a wireless communication network, for example, to a wireless network transmission method, device, communication node, and storage medium.
  • the next-generation wireless local area network supports multi-access point transmission between one or more access points (Access Point, AP) and one or more wireless stations (Station, STA), for example,
  • Access Point AP
  • STA wireless stations
  • a specific AP or trigger entity can send data packets to trigger other access points to perform multi-access point transmission.
  • other listening sites that can receive the data packet need to set the Network Allocation Vector (NAV) according to the information contained in the data packet, and cannot send it during the period when NAV is not zero. Data, so as to avoid conflicts with communication nodes participating in multi-access point transmission.
  • NAV Network Allocation Vector
  • a communication node acts as a participant in multi-access point transmission and the NAV is set according to the relevant mechanism, the communication node will not be able to normally participate in the multi-access point transmission, which will affect the normal realization of the transmission process.
  • This application provides a wireless network transmission method, device, communication node, and storage medium to improve the rationality of NAV settings, so as to ensure the normal realization of multi-access point transmission.
  • the embodiment of the present application provides a wireless network transmission method, which is applied to a first communication node, and includes:
  • PPDU Physical layer protocol data unit
  • the embodiment of the present application also provides a wireless network transmission method, which is applied to a second communication node, and includes:
  • the embodiment of the present application also provides a wireless network transmission device, including:
  • the receiving module is configured to receive the PPDU carrying the first identification information
  • the setting module is set to keep the locally stored NAV unchanged, or to update the locally stored NAV and ignore the NAV during multi-access point transmission.
  • the embodiment of the present application also provides a wireless network transmission device, including:
  • a generating module configured to generate a PPDU, and the PPDU carries the first identification information
  • the sending module is configured to send the PPDU.
  • the embodiment of the present application also provides a communication node, including:
  • One or more processors are One or more processors;
  • Storage device for storing one or more programs
  • the one or more processors When the one or more programs are executed by the one or more processors, the one or more processors implement the aforementioned wireless network transmission method.
  • the embodiment of the present application also provides a computer-readable storage medium, and a computer program is stored on the computer-readable storage medium, and when the program is executed by a processor, the above-mentioned wireless network transmission method is realized.
  • Figure 1 is a schematic diagram of hidden nodes
  • FIG. 2 is a flowchart of a wireless network transmission method provided by an embodiment
  • FIG. 3 is a schematic diagram of triggering multi-access point transmission according to an embodiment
  • FIG. 4 is a schematic diagram of triggering multi-access point transmission according to another embodiment
  • FIG. 5 is a schematic diagram of a frame structure in a wireless local area network provided by an embodiment
  • FIG. 6 is a flowchart of a wireless network transmission method provided by another embodiment
  • FIG. 7 is a schematic structural diagram of a wireless network transmission device provided by an embodiment
  • FIG. 8 is a schematic structural diagram of a wireless network transmission device provided by another embodiment.
  • FIG. 9 is a schematic diagram of the hardware structure of a communication node provided by an embodiment.
  • a wireless network taking WLAN as an example, common devices include APs and wireless stations STA, and STAs and APs can be collectively referred to as wireless communication nodes.
  • the next-generation WLAN supports multi-access point transmission between one or more APs and one or more STAs. In the case of wireless communication nodes sharing channels, it is difficult to detect conflicts in the wireless environment.
  • FIG. 1 is a schematic diagram of hidden nodes.
  • STA1 and STA2 send data to the AP at the same time. Since both STA1 and STA2 are outside the coverage area of each other, conflicts will occur when both STA1 and STA2 send data to the AP at the same time.
  • STA2 is a hidden station.
  • the protected channel access time ie, Duration Field
  • MAC Media Access Control
  • collisions with hidden stations can be avoided.
  • other listening stations that receive the wireless frame containing the protected channel access time will set a locally stored NAV, so that during this time, the listening station will not send data. Avoid collision problems caused by hidden sites competing for channels. After the NAV is reduced to zero, the monitoring station can send data.
  • a wireless network transmission method is provided, which is applied to a first communication node, and the first communication node is a communication node that is triggered to perform multi-access point transmission, as a participant in the multi-access point transmission,
  • Fig. 2 is a flowchart of a wireless network transmission method provided by an embodiment.
  • the first communication node in this embodiment is equivalent to an AP.
  • the method provided in this embodiment includes step 110 and step 120.
  • step 110 a physical layer protocol data unit PPDU carrying the first identification information is received.
  • step 120 the locally stored network allocation vector NAV is kept unchanged, or the locally stored NAV is updated and the NAV is ignored during multi-access point transmission.
  • the first communication node receives the PPDU, and the PPDU carries the first identification information, so that it is clear that the PPDU is used to trigger a multi-access point transmission.
  • the first communication node keeps the locally stored NAV unchanged. , Or update the locally stored NAV according to the protected duration reserved by the PPDU, but ignore the updated NAV during multi-access point transmission, that is, the first communication node does not need to wait for a certain length of time according to the NAV, but can according to the PPDU
  • the parameters in immediately participate in and perform transmission to the third communication node, thereby ensuring the normal realization of multi-access point transmission.
  • each communication node stores NAV locally, including two different types: Basic Server Set (BSS) NAV and Basic NAV.
  • BSS Basic Server Set
  • the AP establishes a BSS, and the STA can associate with the AP through processes such as scanning, authentication, and association.
  • An AP and multiple STAs associated with it form a BSS.
  • DCF Distributed Coordination Function
  • PCF Point Coordination Function
  • EDCA Enhanced Distributed Coordination Access
  • HCCA Hybrid Coordination Function Controlled Channel Access
  • DCF is the most basic mode of operation, using carrier sense multiple access with collision avoidance ( Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) mechanism enables multiple sites to share wireless channels
  • CSMA/CA Carrier Sense Multiple Access with Collision Avoidance
  • EDCA is an enhanced operation mode that maps upper-layer data to four different access categories (Access Categories, referred to as AC), They are the voice access category (Access Categories voice, AC_VO), the video access category (Access Categories video, AC_VI), the best effort access category (Access Categories best effort, AC_BE), and the background access category (Access Categories background, AC_BK).
  • each queue type uses different competition channel parameters to distinguish priority.
  • EDCA uses the CSMA/CA mechanism to make multiple queues with different priority levels share the wireless channel and reserve a transmission opportunity (TXOP).
  • TXOP transmission opportunity
  • the first communication node may not set the locally stored NAV, that is, keep the locally stored value unchanged, or update the locally stored NAV (this BSS NAV) And ignore NAV in the process of multi-access point transmission, and immediately participate in multi-access point transmission.
  • the first identification information is used to trigger a multiple access point transmission operation; the method further includes: performing a multiple access point transmission operation according to the first identification information.
  • the second communication node triggers the first communication node to perform multi-access point transmission by sending a PPDU, there is at least one first communication node, and the receiver of the multi-access point transmission data may be one or more third parties.
  • Communication node for example, a wireless station.
  • the PPDU contains the first identification information, which is used to trigger the first communication node to perform multi-access point transmission.
  • Fig. 3 is a schematic diagram of triggering multi-access point transmission according to an embodiment.
  • multiple APs can communicate with one or more STAs simultaneously or non-simultaneously, that is, Multi-AP Transmission.
  • the simultaneous transmission of multiple APs is generally triggered by a specific functional entity, which may be a specific AP or a specific device in the network.
  • the triggering entity is the second communication node.
  • the second communication node triggers two first communication nodes to transmit data to STA1 at the same time.
  • the sending moments among multiple first communication nodes are aligned, so multiple The signals between the first communication nodes will not interfere with each other and affect the reception of the STA.
  • the second communication node if the triggering process is completed through the air interface, the second communication node usually needs to send a radio frame with the function of triggering transmission to the first communication node, and the radio frame contains the first one used to trigger the transmission operation of multiple access points.
  • the identification information can also include the access time of the protected channel and the receiver.
  • Fig. 4 is a schematic diagram of triggering multi-access point transmission according to another embodiment.
  • the second communication node triggers the first communication node and the second communication node to simultaneously transmit data to the STA1, that is, the communication node that performs multi-access point transmission may include the trigger entity itself.
  • the second communication node may be an access point
  • the first communication node may be an access point in a wireless local area network environment such as a home network environment, a commercial environment, or an industrial environment.
  • the second communication node can inform itself whether it supports multi-access point transmission.
  • the modes of multi-access point transmission include: multi-access point joint transmission (multiple APs transmit to STA at the same time), and multi-access point selective transmission (multiple APs transmit to STA at the same time). One AP is selected in the AP to transmit to the STA at a time), and multi-access point coordinated transmission (multiple APs transmit to their associated STAs at the same time).
  • Multi-access point coordinated transmission includes coordinated orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), coordinated frequency multiplexing and so on.
  • OFDMA Orthogonal Frequency Division Multiple Access
  • the STA informs the AP whether it supports multi-access point transmission and the supported multi-access point transmission mode.
  • keeping the locally stored NAV unchanged includes: classifying the PPDU as a PPDU outside the basic service set according to the first identification information, and keeping the locally stored NAV unchanged.
  • the first communication node judges whether the PPDU is classified as the PPDU of the BSS according to the first identification information. If the PPDU is not classified as the PPDU of the BSS, the locally stored PPDU is maintained. The NAV remains unchanged, that is, the locally stored NAV is not updated, and the data needs to be sent after the locally stored NAV is reduced to 0.
  • updating the locally stored NAV and ignoring the NAV during multi-access point transmission includes: classifying the PPDU as a PPDU in the basic service set according to the first identification information; updating the locally stored NAV , And ignore the updated NAV during multi-access point transmission.
  • the first communication node determines whether the PPDU is classified as the PPDU of the BSS according to the first identification information, and if the PPDU is classified as the PPDU of the BSS, the locally stored NAV is updated However, the updated NAV is ignored during the transmission of multiple access points, and there is no need to wait for a certain length of time according to the NAV, and the transmission to the third communication node can be immediately participated and executed according to the parameters in the PPDU.
  • the first communication node determines that the PPDU belongs to the BSS; or,
  • One or more APs have established a multi-AP transmission group, and the first communication node belongs to the multi-AP transmission group, the first communication node determines that the PPDU belongs to the BSS; or,
  • One or more APs have performed a multi-AP transmission agreement, and the first communication node participates in the multi-AP transmission agreement, the first communication node determines that the PPDU belongs to the BSS.
  • the keeping the locally stored NAV unchanged, or updating the locally stored NAV and ignoring the NAV during multi-access point transmission includes: when the PPDU also includes the second identification information , Determine whether to participate in multiple access point transmission according to the second identification information; in the case of participating in multiple access point transmission, update the locally stored NAV, and ignore the updated NAV during the process of multiple access point transmission; In the case of participating in multi-access point transmission, the locally stored NAV remains unchanged.
  • the PPDU also includes second identification information, which is used to indicate the wireless frame receiver.
  • second identification information is used to indicate the wireless frame receiver.
  • the first communication node After the first communication node receives the PPDU, it decides whether to participate in multiple access point transmission according to the second identification information. For access point transmission, the locally stored NAV is updated, but the updated NAV is ignored during multi-access point transmission. There is no need to wait for a certain length of time according to the NAV, and the third communication can be immediately participated and executed according to the parameters in the PPDU. Node transmission; if you do not participate in this multi-access point transmission, the locally stored NAV remains unchanged, and the data needs to be sent after the NAV is reduced to 0.
  • updating the locally stored NAV includes: comparing the locally stored NAV (this BSS NAV) with the protected channel access duration corresponding to the PPDU, and set the maximum value of the two as the new local BSS NAV .
  • the first identification information is indicated by the first configuration field of the MAC frame header of the wireless frame in the PPDU, or indicated by the second configuration field of the physical layer signaling field of the PPDU.
  • the second identification information is indicated by the third setting field of the MAC frame header of the radio frame in the PPDU, or by physical layer signaling of the PPDU
  • the fourth setting of the domain indicates the domain.
  • the first identification information can be expressed in multiple ways.
  • the first identification information is located in the MAC frame header of the wireless frame in the PPDU, and specifically may be the MAC frame of the Trigger Frame used to trigger transmission by other wireless communication nodes.
  • One or more bits in the Frame Control field in the header indicate that the radio frame is used to trigger or notify one or more first communication nodes to perform a multi-access point transmission; another example is the first identifier
  • the information can be represented by the trigger type (Trigger Type) field in the MAC frame header of the trigger frame, indicating that the wireless frame is used to trigger one or more first communication nodes to perform a multi-access point transmission; another example is the first identification information Located in the physical layer signaling field of the PPDU, it indicates that the radio frame is used to trigger one or more first communication nodes to perform a multi-access point transmission.
  • Trigger Type Trigger Type
  • the PPDU may also include second identification information for indicating the receiver.
  • the identifier may designate a specific communication node as the receiver, or it may be multicast or broadcast.
  • the second identification information can be expressed in multiple ways.
  • the second identification information is located in the MAC frame header in the wireless frame of the PPDU, in the form of the MAC address or identification of the third communication node, and the communication node corresponding to the second identification information It is the receiver, and its form can also be a multicast or broadcast address or identification, indicating that one or more third communication nodes are receivers; for another example, the second identification information is from the association identification (Association ID, AID) several values reserved within the value range are allocated to each wireless communication node.
  • association ID Association ID
  • the value range of AID is 0 ⁇ N
  • the 0 ⁇ M value, or the NM ⁇ Nth value among them are allocated to wireless communication nodes, and the AID assigned to each wireless communication node can be shared between wireless communication nodes.
  • Mutual negotiation is completed, or by a specific entity in the network, such as a central control node.
  • Fig. 5 is a schematic diagram of a frame structure in a wireless local area network provided by an embodiment.
  • the physical layer (PHY) frame header and/or the MAC frame header may not only include the first identification information, but also may include the second identification information for indicating the receiver.
  • the locally stored NAV is a multi-access point transmission NAV.
  • the NAV stored locally by the first communication node in addition to the BSS NAV and the basic NAV, also includes: multi-access point transmission NAV.
  • multi-access point transmission NAV In the case of adding multiple access points to transmit NAV, when the three NAVs are all reduced to 0, the first communication node can consider that the virtual channel is detected as being idle, and can send data.
  • the first communication node after receiving the PPDU, judges whether the PPDU is used to trigger multi-access point transmission according to the first identification information, and if the PPDU is not used to trigger multi-access point transmission, it keeps the multiple access point.
  • the in-point transmission NAV remains unchanged. If the PPDU is used to trigger multi-access point transmission, the multi-access point transmission NAV is updated, but the updated NAV is ignored during the multi-access point transmission process, and the multiple access is performed according to the PPDU parameters In-point transmission.
  • the first communication node judges whether the PPDU participates in this multi-access point transmission according to the second identification information, if not, keep the multi-access point transmission NAV unchanged, if Participate, the multi-access point transmission NAV is updated, but the updated NAV is ignored during the multi-access point transmission process, and the multi-access point transmission is performed according to the parameters of the PPDU.
  • updating the multiple access point transmission NAV includes: comparing the locally stored multiple access point transmission NAV with the protected channel access duration corresponding to the PPDU, and set the maximum value of the two as the new one.
  • Multiple access points transmit NAV.
  • the first communication node is a participant in the multi-access point transmission
  • the NAV is set reasonably to ensure that the data transmission process is in the case of belonging to the BSS or participating in the multi-access point transmission. Not affected, so as to ensure the normal realization of multi-access point transmission, thereby improving system throughput.
  • a wireless network transmission method is also provided, which is applied to a second communication node, and the second communication node triggers at least one first communication node to perform multi-access point transmission by sending a PPDU carrying first identification information , Enabling the first communication node to reasonably set NAV according to the first identification information, ensuring that the first communication node can transmit in real time, thereby ensuring the normal realization of multi-access point transmission.
  • the second communication node in this embodiment interacts correspondingly with the first communication node in the foregoing embodiment.
  • Fig. 6 is a flowchart of a wireless network transmission method according to another embodiment. As shown in FIG. 6, the method provided in this embodiment includes step 210 and step 220.
  • step 210 a PPDU is generated, and the PPDU carries the first identification information.
  • step 220 the PPDU is sent.
  • the second communication node triggers the first communication node to perform multi-access point transmission by sending a PPDU.
  • the recipient of the multi-access point transmission data may be one or more third communication nodes.
  • Node for example, a wireless station.
  • the PPDU contains first identification information, which is used to instruct the first communication node to participate in and perform multi-access point transmission.
  • the second communication node is, for example, the trigger entity in FIG. 3, and the communication node that is triggered to perform multi-access point transmission may also include the second communication node itself.
  • the first identification information is used to trigger at least one communication node to perform a multi-access point transmission operation.
  • the PPDU further includes: second identification information, which is used to indicate the receiver of the wireless frame.
  • the first identification information is indicated by the first configuration field of the MAC frame header of the wireless frame in the PPDU, or indicated by the second configuration field of the physical layer signaling field of the PPDU.
  • the second identification information is indicated by the third setting field of the MAC frame header of the radio frame in the PPDU, or by physical layer signaling of the PPDU
  • the fourth setting of the domain indicates the domain.
  • FIG. 7 is a schematic structural diagram of a wireless network transmission device provided by an embodiment. As shown in FIG. 7, the transmission device of the wireless network includes: a receiving module 310 and a setting module 320.
  • the receiving module 310 is configured to receive the PPDU carrying the first identification information
  • the setting module 320 is set to keep the locally stored NAV unchanged, or to update the locally stored NAV and ignore the NAV during multi-access point transmission.
  • the transmission device of the wireless network in this embodiment ensures that the data transmission process is not affected by reasonably setting NAV, thereby ensuring the normal realization of multi-access point transmission, thereby improving system throughput.
  • the first identification information is used to trigger a multiple access point transmission operation
  • the device also includes:
  • the execution module is configured to execute a multi-access point transmission operation according to the first identification information.
  • the setting module 320 includes:
  • the holding unit is configured to classify the PPDU as a PPDU outside the basic service set according to the first identification information, and keep the locally stored NAV unchanged.
  • the setting module 320 includes:
  • An update unit configured to classify the PPDU as a PPDU in a basic service set according to the first identification information
  • the setting module 320 is specifically set as follows:
  • the PPDU further includes second identification information, determine whether to participate in the multi-access point transmission according to the second identification information;
  • the first identification information is indicated by the first configuration field of the MAC frame header of the wireless frame in the PPDU, or indicated by the second configuration field of the physical layer signaling field of the PPDU .
  • the second identification information is indicated by the third configuration field of the MAC frame header of the wireless frame in the PPDU, or indicated by the fourth configuration field of the physical layer signaling field of the PPDU.
  • the locally stored NAV is a multi-access point transmission NAV.
  • FIG. 8 is a schematic structural diagram of a wireless network transmission device provided by another embodiment. As shown in FIG. 8, the transmission device of the wireless network includes: a generating module 410 and a sending module 420.
  • the generating module 410 is configured to generate a PPDU, and the PPDU carries the first identification information
  • the sending module 420 is configured to send the PPDU.
  • the transmission device of the wireless network in this embodiment triggers at least one first communication node to perform multi-access point transmission by sending a PPDU carrying first identification information, so that the first communication node reasonably sets NAV according to the first identification information to ensure the first identification information.
  • the communication node can transmit instantly, thereby ensuring the normal realization of multi-access point transmission.
  • the second communication node in this embodiment interacts correspondingly with the first communication node in the foregoing embodiment.
  • the first identification information is used to trigger at least one communication node to perform a multi-access point transmission operation
  • the PPDU further includes:
  • the second identification information is used to indicate the receiver of the wireless frame.
  • the first identification information is indicated by the first configuration field of the MAC frame header of the wireless frame in the PPDU, or indicated by the second configuration field of the physical layer signaling field of the PPDU .
  • the second identification information is indicated by the third configuration field of the MAC frame header of the wireless frame in the PPDU, or indicated by the fourth configuration field of the physical layer signaling field of the PPDU.
  • wireless network transmission device proposed in this embodiment refer to the wireless network transmission method proposed in the above embodiment.
  • this embodiment has and executes the transmission method. The same beneficial effect.
  • the embodiment of the present application also provides a communication node.
  • the transmission method of the wireless network may be executed by a transmission device of the wireless network, and the transmission device of the wireless network may be implemented by software and/or hardware, and integrated in the communication node.
  • FIG. 9 is a schematic diagram of the hardware structure of a communication node provided by an embodiment.
  • a communication node provided in this embodiment includes a processor 510 and a storage device 520.
  • one processor 510 is taken as an example.
  • the processor 510 and the storage device 520 in the communication node may be connected by a bus or other means.
  • FIG. 9 Take the bus connection as an example.
  • the one or more programs are executed by the one or more processors 510, so that the one or more processors 510 implement the wireless network transmission method described in any of the foregoing embodiments.
  • the storage device 520 in the communication node is used as a computer-readable storage medium and can be used to store one or more programs.
  • the programs can be software programs, computer-executable programs, and modules, such as those of a wireless network in the embodiment of the present invention.
  • the program instructions/modules corresponding to the transmission method include: a receiving module 310 and a setting module 320).
  • the processor 510 executes various functional applications and data processing of the communication node by running the software programs, instructions, and modules stored in the storage device 520, that is, implements the wireless network transmission method in the foregoing method embodiment.
  • the storage device 520 mainly includes a storage program area and a storage data area.
  • the storage program area can store an operating system and an application program required by at least one function; the storage data area can store data created according to the use of the device, etc. (as in the above implementation) In the example, the first identification information, NAV, etc.).
  • the storage device 520 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices.
  • the storage device 520 may further include a memory provided remotely with respect to the processor 510, and these remote memories may be connected to a communication node through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • the communication node in this embodiment refers to the first communication node that is triggered.
  • the communication node in this embodiment refers to the second communication node used to trigger multi-access point transmission.
  • the embodiment of the present application also provides a storage medium containing computer-executable instructions.
  • the computer-executable instructions are used to execute the above-mentioned wireless network transmission method when executed by a computer processor.
  • this application can be implemented by software and general hardware, or can be implemented by hardware.
  • the technical solution of the present application can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), Random Access Memory (RAM), flash memory (FLASH), hard disk or optical disk, etc., including multiple instructions to make a computer device (which can be a personal computer, server, or network device, etc.) execute any of this application
  • a computer-readable storage medium such as a computer floppy disk, read-only memory (ROM), Random Access Memory (RAM), flash memory (FLASH), hard disk or optical disk, etc.
  • the block diagram of any logic flow in the drawings of the present application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions.
  • the computer program can be stored on the memory.
  • the memory can be of any type suitable for the local technical environment and can be implemented using any suitable data storage technology, such as but not limited to read only memory (ROM), random access memory (RAM), optical storage devices and systems (digital multi-function optical discs) (Digital Video Disk, DVD) or portable compact disk (Compact Disc, CD)), etc.
  • Computer-readable media may include non-transitory storage media.
  • the data processor can be any type suitable for the local technical environment, such as but not limited to general-purpose computers, special-purpose computers, microprocessors, digital signal processors (Digital Signal Processors, DSP), application specific integrated circuits (ASICs) ), programmable logic devices (Field Programmable Gate Array, FPGA), and processors based on multi-core processor architecture.
  • DSP Digital Signal Processors
  • ASICs application specific integrated circuits
  • FPGA Field Programmable Gate Array
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Abstract

本申请提供一种无线网络的传输方法、装置、通信节点及存储介质。该无线网络的传输方法接收携带有第一标识信息的物理层协议数据单元PPDU；保持本地存储的网络分配矢量NAV不变，或者更新本地存储的NAV并在多接入点传输的过程中忽略更新后的NAV。

Description

无线网络的传输方法、装置、通信节点及存储介质
本申请要求在2020年01月22日提交中国专利局、申请号为202010075389.1的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线通信网络，例如涉及一种无线网络的传输方法、装置、通信节点及存储介质。
背景技术
下一代无线局域网络(Wireless Local Area Network，WLAN)支持一个或多个接入点(Access Point，AP)与一个或多个无线站点(Station，STA)之间的多接入点传输，例如，特定的AP或触发实体可以发送数据包用于触发其他接入点进行多接入点传输。在多接入点传输过程中，其他能接收到该数据包的旁听站点需要按照该数据包内包含的信息设置网络分配矢量(Network Allocation Vector，NAV)，在NAV不为零的期间内不能发送数据，从而避免与参与多接入点传输的通信节点之间发生冲突。这种情况下，如果一个通信节点作为多接入点传输的参与方且按相关机制设置NAV，则会造成该通信节点无法正常参与多接入点传输，影响传输过程的正常实现。
发明内容
本申请提供一种无线网络的传输方法、装置、通信节点及存储介质，以改进NAV设置的合理性，从而保证多接入点传输的正常实现。
本申请实施例提供一种无线网络的传输方法，应用于第一通信节点，包括：
接收携带有第一标识信息的物理层协议数据单元(Phy Protocal Data Unit，PPDU)；
保持本地存储的NAV不变，或者更新本地存储的NAV并在多接入点传输的过程中忽略所述NAV。
本申请实施例还提供一种无线网络的传输方法，应用于第二通信节点，包括：
生成PPDU，所述PPDU中携带有第一标识信息；
发送所述PPDU。
本申请实施例还提供了一种无线网络的传输装置，包括：
接收模块，设置为接收携带有第一标识信息的PPDU；
设置模块，设置为保持本地存储的NAV不变，或者更新本地存储的NAV并在多接入点传输的过程中忽略所述NAV。
本申请实施例还提供了一种无线网络的传输装置，包括：
生成模块，设置为生成PPDU，所述PPDU中携带有第一标识信息；
发送模块，设置为发送所述PPDU。
本申请实施例还提供了一种通信节点，包括：
一个或多个处理器；
存储装置，用于存储一个或多个程序；
当所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现上述的无线网络的传输方法。
本申请实施例还提供了一种计算机可读存储介质，计算机可读存储介质上存储有计算机程序，该程序被处理器执行时实现上述的无线网络的传输方法。
附图说明
图1为隐藏节点的示意图；
图2为一实施例提供的一种无线网络的传输方法的流程图；
图3为一实施例提供的触发多接入点传输的示意图；
图4为另一实施例提供的触发多接入点传输的示意图；
图5为一实施例提供的无线局域网络中的帧结构的示意图；
图6为另一实施例提供的一种无线网络的传输方法的流程图；
图7为一实施例提供的一种无线网络的传输装置的结构示意图；
图8为另一实施例提供的一种无线网络的传输装置的结构示意图；
图9为一实施例提供的一种通信节点的硬件结构示意图。
具体实施方式
下面结合附图和实施例对本申请进行说明。可以理解的是，此处所描述的具体实施例仅仅用于解释本申请，而非对本申请的限定。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互任意组合。另外还需要说明的是，为了便于描述，附图中仅示出了与本申请相关的部分而非全部结构。
在无线网络中，以WLAN为例，常见设备包括AP以及无线站点STA，STA和AP可以统称为无线通信节点。下一代WLAN支持一个或多个AP与一个或多个STA之间的多接入点传输。在无线通信节点共享信道的情况下，无线环境的冲突检测困难。
图1为隐藏节点的示意图。如图1所示，STA1和STA2同时向AP发送数据，由于STA1和STA2彼此都处于对方的覆盖范围之外，两者同时向AP发送数据会产生冲突。相对于STA1，STA2即为隐藏站点。通过在无线帧的媒体接入控制(Media Access Control，MAC)帧头中包含受保护的信道接入时间(即持续时间字段，Duration Field)，可以避免与隐藏站点的碰撞。在该无线帧结束后的一段时间内，其他接收到包含有受保护的信道接入时间的无线帧的旁听站点会设置本地存储的一个NAV，从而在该时间内，旁听站点不会发送数据，避免隐藏站点竞争信道造成的碰撞问题。在NAV减为零后，旁听站点才能发送数据。
在多接入点传输过程中，其他能接收到该数据包的旁听站点需要按照该数据包内包含的信息设置NAV，在NAV不为零的期间内不能发送数据，从而避免与参与多接入点传输的通信节点之间发生冲突。这种情况下，如果一个通信节点作为多接入点传输的参与方而非发起方，则也被视为旁听站点，如果按相关机制设置NAV，会造成该通信节点无法正常参与多接入点传输，影响传输过程的正常实现。
在本申请实施例中，提供一种无线网络的传输方法，应用于第一通信节点，第一通信节点为被触发进行多接入点传输的通信节点，作为多接入点传输的参与方，通过合理设置NAV，保证数据发送过程不受影响，从而保证多接入点传输的正常实现，进而提升系统吞吐量。
图2为一实施例提供的一种无线网络的传输方法的流程图。本实施例中的第一通信节点相当于AP。如图2所示，本实施例提供的方法包括步骤110和步骤120。
在步骤110中，接收携带有第一标识信息的物理层协议数据单元PPDU。
在步骤120中，保持本地存储的网络分配矢量NAV不变，或者更新本地存储的NAV并在多接入点传输的过程中忽略所述NAV。
本实施例中，第一通信节点接收PPDU，PPDU中携带第一标识信息，从而明确该PPDU用于触发一次多接入点传输，这种情况下，第一通信节点保持本地存储的NAV不变，或者根据PPDU所预约的受保护时长更新本地存储的NAV，但在多接入点传输的过程中忽略该更新后的NAV，即，第一通信节点无需按照NAV等待一定的时长，可根据PPDU中的参数即时参与并执行对第三通信节点的传输，从而保证多接入点传输的正常实现。
在一实施例中，每个通信节点本地都存储有NAV，包括两种不同类型：本基本服务集(Basic Server Set，BSS)NAV和基础NAV。AP建立一个BSS，STA通过扫描认证关联等过程可与该AP关联。一个AP以及与其相关联的多个STA组成一个BSS。以802.11为例，定义了两种操作模式：分布式协调功能(Distributed Coordination Function，DCF)和点协调功能(Point Coordination Function，PCF)，以及针对这两种操作模式的改进：增强型分布式协调访问(Enhanced Distributed Channel Access，EDCA)和混合协调功能控制信道访问(Hybrid Coordination Function Controlled Channel Access，HCCA)，其中，DCF是最基本的操作模式，利用带有冲突避免的载波侦听多路访问(Carrier Sense Multiple Access with Collision Avoidance，CSMA/CA)机制使多个站点共享无线信道；EDCA是增强型操作模式，将上层数据映射到四个不同的队列接入类别(Access Categories，简称为AC)，分别是声音接入类别(Access Categories voice，AC_VO)、视频接入类别(Access Categories video，AC_VI)、最大努力接入类别(Access Categories best effort，AC_BE)以及背景接入类别(Access Categories background，AC_BK)，每个队列类别使用不同的竞争信道的参数来区分优先级。EDCA利用CSMA/CA机制，使多个不同优先级队列共享无线信道，并预约一个传输机会(Transmission Opportunity，TXOP)。在第一通信节点接收到一个无线帧的情况下，判断该帧是否属于本BSS，若该帧属于本BSS，则设置本BSS NAV；若该帧不属于本BSS，或无法判定是否属于本BSS，则设置基础NAV。在满足一定条件的情况下，可以忽略本BSS NAV的值，但基础NAV的值不能被忽略，只有在两个NAV的值均减至0的情况下，才认为虚拟信道检测为空闲，才能开始数据传输。
本实施例中，第一通信节点接收到携带有第一标识信息的PPDU后，可以不设置本地存储的NAV，即保持本地存储的值不变，也可以更新本地存储的NAV(本BSS NAV)并在多接入点传输的过程中忽略NAV，即时参与多接入点传输。
在一实施例中，第一标识信息用于触发多接入点传输操作；所述方法还包括：根据第一标识信息执行多接入点传输操作。
在一实施例中，第二通信节点通过发送PPDU触发第一通信节点进行多接入点传输，第一通信节点至少为一个，多接入点传输数据的接收方可以为一个 或多个第三通信节点(例如为无线站点)。PPDU中包含第一标识信息，用于触发第一通信节点进行多接入点传输。
图3为一实施例提供的触发多接入点传输的示意图。随着WLAN技术的不断演进，多个AP可以同时或非同时地与一个或者多个STA进行通信，即多接入点传输(Multi-AP Transmission)。以多个AP同时向一个STA传输为例，多个AP的同时传输一般由特定的功能实体进行触发，该特定实体可以是特定AP或者网络中的特定设备。如图3所示，触发实体即为第二通信节点，第二通信节点触发两个第一通信节点同时向STA1传输数据，多个第一通信节点之间的发送时刻是对齐的，因此多个第一通信节点之间的信号彼此不会形成干扰而影响STA的接收。在此过程中，如果触发过程通过空中接口完成，第二通信节点通常需要向第一通信节点发送具有触发传输的功能的无线帧，无线帧中包含用于触发多接入点传输操作的第一标识信息，还可以包含受保护的信道接入时间和接收方。
图4为另一实施例提供的触发多接入点传输的示意图。如图4所示，第二通信节点触发第一通信节点与第二通信节点同时向STA1传输数据，即，进行多接入点传输的通信节点可以包括触发实体本身。
上述实施例中，第二通信节点可以为一个接入点，第一通信节点可以为家庭网络环境、商用环境或者工业环境等无线局域网络环境下的接入点。第二通信节点可以通知自己是否支持多接入点传输，多接入点传输的模式包括：多接入点联合传输(多个AP同时向STA传输)、多接入点选择性传输(多个AP中每次选择一个AP向STA传输)、多接入点协作传输(多个AP同时向各自关联STA传输)。多接入点协作传输包括协作正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、协作频率复用等。STA通知AP本身是否支持多接入点传输以及所支持的多接入点传输的模式。
在一实施例中，保持本地存储的NAV不变，包括：根据第一标识信息将PPDU归类为基本服务集外的PPDU，并保持本地存储的NAV不变。
本实施例中，第一通信节点接收到PPDU后，根据第一标识信息判断该PPDU是否归类为本BSS的PPDU，在该PPDU不归类为本BSS的PPDU的情况下，保持本地存储的NAV不变，即，不对本地存储的NAV进行更新，需要在本地存储的NAV减至0后再发送数据。
在一实施例中，更新本地存储的NAV并在多接入点传输的过程中忽略所述NAV，包括：根据第一标识信息将PPDU归类为基本服务集内的PPDU；更新本地存储的NAV，并在多接入点传输的过程中忽略更新后的NAV。
本实施例中，第一通信节点接收到PPDU后，根据第一标识信息判断该 PPDU是否归类为本BSS的PPDU，在该PPDU归类为本BSS的PPDU的情况下，更新本地存储的NAV，但在多接入点传输过程中忽略更新后的NAV，无需按照NAV等待一定的时长，可根据PPDU中的参数即时参与和执行对第三通信节点的传输。
在一实施例中，PPDU中包含第一标识信息，则第一通信节点判断该PPDU属于本BSS；或者，
一个或多个AP建立了多AP传输组，且第一通信节点属于该多AP传输组，则第一通信节点判断该PPDU属于本BSS；或者，
一个或多个AP进行了多AP传输约定，且第一通信节点参与了多AP传输约定，则第一通信节点判断该PPDU属于本BSS。
在一实施例中，所述保持本地存储的NAV不变，或者更新本地存储的NAV并在多接入点传输的过程中忽略所述NAV，包括：在PPDU还包括第二标识信息的情况下，根据第二标识信息确定是否参与多接入点传输；在参与多接入点传输的情况下，更新本地存储的NAV，并在多接入点传输的过程中忽略更新后的NAV；在不参与多接入点传输的情况下，保持本地存储的NAV不变。
本实施例中，PPDU中还包括第二标识信息，用于指示无线帧接收方，第一通信节点接收到PPDU后，根据第二标识信息决定是否参与多接入点传输，如果参与本次多接入点传输，则更新本地存储的NAV，但在多接入点传输的过程中忽略更新后的NAV，无需按照NAV等待一定的时长，可根据PPDU中的参数即时参与并执行对第三通信节点的传输；如果不参与本次多接入点传输，则保持本地存储的NAV不变，需要在NAV减至0后再发送数据。
在一实施例中，更新本地存储的NAV包括：将本地存储的NAV(本BSS NAV)与PPDU对应的受保护的信道接入时长比较，取两者中的最大值设置为新的本BSS NAV。
在一实施例中，第一标识信息通过PPDU中的无线帧的MAC帧头的第一设定域指示，或者通过PPDU的物理层信令域的第二设定域指示。
在所述PPDU还包括第二标识信息的情况下，所述第二标识信息通过所述PPDU中的无线帧的MAC帧头的第三设定域指示，或者通过所述PPDU的物理层信令域的第四设定域指示。
第一标识信息有多种表示方式，例如，第一标识信息位于PPDU中的无线帧中MAC帧头内，具体可以为用于触发其他无线通信节点进行传输的触发帧(Trigger Frame)的MAC帧头中的帧控制(Frame Control)域中的一个或者多个比特位，表明该无线帧用于触发或通知一个或多个第一通信节点进行一次多接入点传输；又如，第一标识信息可以通过触发帧的MAC帧头中的触发类型 (Trigger Type)域表示，表明该无线帧用于触发一个或多个第一通信节点进行一次多接入点传输；又如，第一标识信息位于PPDU的物理层信令域中，表明该无线帧用于触发一个或多个第一通信节点进行一次多接入点传输。
在一实施例中，PPDU中还可以包含第二标识信息，用于指示接收方，该标识可能指定特定通信节点为接收方，也可能为组播或广播。
第二标识信息有多种表示方式，例如，第二标识信息位于PPDU的无线帧中MAC帧头内，其形式为第三通信节点的MAC地址或标识等，与第二标识信息对应的通信节点即为接收方，其形式也可以为一个组播或广播地址或标识，表明一个或多个第三通信节点为接收方；又如，第二标识信息是从分配给无线站点的关联标识(Association ID，AID)的取值范围内预留出的若干值，分配给各无线通信节点。例如，AID的取值范围是0～N，则其中的第0～M个值，或者第N-M～N个值分配给无线通信节点，分配给各无线通信节点的AID可以由无线通信节点之间相互协商完成，或者由网络中的特定实体，如中心控制节点完成。
图5为一实施例提供的无线局域网络中的帧结构的示意图。如图5所示，物理层(Physical Layer，PHY)帧头和/或MAC帧头中，除了包含第一标识信息，还可以包含用于指示接收方的第二标识信息。
在一实施例中，本地存储的NAV为多接入点传输NAV。
本实施例中，第一通信节点本地存储的NAV，除了包括本BSS NAV和基础NAV以外，还包括：多接入点传输NAV。在增加多接入点传输NAV的情况下，三种NAV均减至0时，第一通信节点才可认为虚拟信道检测为空闲，才能发送数据。
在一实施例中，第一通信节点在接收到PPDU之后，根据第一标识信息判断该PPDU是否用于触发多接入点传输，如果该PPDU不用于触发多接入点传输，则保持多接入点传输NAV不变，如果该PPDU用于触发多接入点传输，则更新多接入点传输NAV，但在多接入点传输过程中忽略更新后的NAV，根据PPDU的参数执行多接入点传输。
在一实施例中，第一通信节点在接收到PPDU之后，根据第二标识信息判断该PPDU是否参与本次多接入点传输，如果不参与，则保持多接入点传输NAV不变，如果参与，则更新多接入点传输NAV，但在多接入点传输过程中忽略更新后的NAV，根据PPDU的参数执行多接入点传输。
在一实施例中，更新多接入点传输NAV，包括：将本地存储的多接入点传输NAV与PPDU对应的受保护的信道接入时长比较，取两者中的最大值设置为新的多接入点传输NAV。
上述实施例的无线网络的传输方法，第一通信节点作为多接入点传输的参与方，通过合理设置NAV，保证在属于本BSS或参与本次多接入点传输的情况下，数据发送过程不受影响，从而保证多接入点传输的正常实现，进而提升系统吞吐量。
在本申请实施例中，还提供一种无线网络的传输方法，应用于第二通信节点，第二通信节点通过发送携带第一标识信息的PPDU触发至少一个第一通信节点进行多接入点传输，使得第一通信节点根据第一标识信息合理设置NAV，确保第一通信节点能够即时传输，从而保证多接入点传输的正常实现。本实施例中的第二通信节点与上述实施例中的第一通信节点对应交互，未在本实施例中详尽描述的技术细节可参见上述任意实施例。
图6为另一实施例提供的一种无线网络的传输方法的流程图。如图6所示，本实施例提供的方法包括步骤210和步骤220。
在步骤210中，生成PPDU，所述PPDU中携带有第一标识信息。
在步骤220中，发送所述PPDU。
本实施例中，第二通信节点通过发送PPDU触发第一通信节点进行多接入点传输，第一通信节点至少为一个，多接入点传输数据的接收方可以为一个或多个第三通信节点(例如为无线站点)。PPDU中包含第一标识信息，用于指示第一通信节点参与并执行多接入点传输。第二通信节点例如为图3中的触发实体，被触发执行多接入点传输的通信节点也可以包括第二通信节点本身。
在一实施例中，第一标识信息用于触发至少一个通信节点执行多接入点传输操作。
在一实施例中，PPDU还包括：第二标识信息，用于指示所述无线帧的接收方。
在一实施例中，第一标识信息通过所述PPDU中的无线帧的MAC帧头的第一设定域指示，或者通过PPDU的物理层信令域的第二设定域指示。
在所述PPDU还包括第二标识信息的情况下，所述第二标识信息通过所述PPDU中的无线帧的MAC帧头的第三设定域指示，或者通过所述PPDU的物理层信令域的第四设定域指示。
本申请实施例还提供一种无线网络的传输装置。图7为一实施例提供的一种无线网络的传输装置的结构示意图。如图7所示，所述无线网络的传输装置包括：接收模块310和设置模块320。
接收模块310，设置为接收携带有第一标识信息的PPDU；
设置模块320，设置为保持本地存储的NAV不变，或者更新本地存储的NAV 并在多接入点传输的过程中忽略所述NAV。
本实施例的无线网络的传输装置，通过合理设置NAV，保证数据发送过程不受影响，从而保证多接入点传输的正常实现，进而提升系统吞吐量。
在一实施例中，所述第一标识信息用于触发多接入点传输操作；
所述装置还包括：
执行模块，设置为根据所述第一标识信息执行多接入点传输操作。
在一实施例中，所述设置模块320，包括：
保持单元，设置为根据所述第一标识信息将所述PPDU归类为基本服务集外的PPDU，并保持本地存储的NAV不变。
在一实施例中，所述设置模块320，包括：
更新单元，设置为根据所述第一标识信息将所述PPDU归类为基本服务集内的PPDU；
更新本地存储的NAV，并在所述多接入点传输的过程中忽略更新后的NAV。
在一实施例中，所述设置模块320，具体设置为：
在所述PPDU还包括第二标识信息的情况下，根据所述第二标识信息决定是否参与所述多接入点传输；
在参与所述多接入点传输的情况下，更新所述本地存储的NAV，并在所述多接入点传输的过程中忽略更新后的NAV；
在不参与所述多接入点传输的情况下，保持所述本地存储的NAV不变。
在一实施例中，所述第一标识信息通过所述PPDU中的无线帧的MAC帧头的第一设定域指示，或者通过所述PPDU的物理层信令域的第二设定域指示。
在一实施例中，第二标识信息通过所述PPDU中的无线帧的MAC帧头的第三设定域指示，或者通过所述PPDU的物理层信令域的第四设定域指示。
在一实施例中，所述本地存储的NAV为多接入点传输NAV。
本实施例提出的传输装置可参见上述实施例提出的传输方法，未在本实施例中详尽描述的技术细节可参见上述任意实施例，并且本实施例具备与执行传输方法相同的有益效果。
本申请实施例还提供一种无线网络的传输装置。图8为另一实施例提供的一种无线网络的传输装置的结构示意图。如图8所示，所述无线网络的传输装置包括：生成模块410和发送模块420。
生成模块410，设置为生成PPDU，所述PPDU中携带有第一标识信息；
发送模块420，设置为发送所述PPDU。
本实施例的无线网络的传输装置，通过发送携带第一标识信息的PPDU触发至少一个第一通信节点进行多接入点传输，使得第一通信节点根据第一标识 信息合理设置NAV，确保第一通信节点能够即时传输，从而保证多接入点传输的正常实现。本实施例中的第二通信节点与上述实施例中的第一通信节点对应交互，未在本实施例中详尽描述的技术细节可参见上述任意实施例。
在一实施例中，所述第一标识信息用于触发至少一个通信节点执行多接入点传输操作；
在一实施例中，所述PPDU还包括：
第二标识信息，用于指示所述无线帧的接收方。
在一实施例中，所述第一标识信息通过所述PPDU中的无线帧的MAC帧头的第一设定域指示，或者通过所述PPDU的物理层信令域的第二设定域指示。
在一实施例中，第二标识信息通过所述PPDU中的无线帧的MAC帧头的第三设定域指示，或者通过所述PPDU的物理层信令域的第四设定域指示。
本实施例提出的无线网络的传输装置可参见上述实施例提出的无线网络的传输方法，未在本实施例中详尽描述的技术细节可参见上述任意实施例，并且本实施例具备与执行传输方法相同的有益效果。
本申请实施例还提供一种通信节点。所述无线网络的传输方法可以由无线网络的传输装置执行，该无线网络的传输装置可以通过软件和/或硬件的方式实现，并集成在所述通信节点中。
图9为一实施例提供的一种通信节点的硬件结构示意图。如图9所示，本实施例提供的一种通信节点，包括：处理器510和存储装置520。该通信节点中的处理器510可以是一个或多个，图9中以一个处理器510为例，所述通信节点中的处理器510和存储装置520可以通过总线或其他方式连接，图9中以通过总线连接为例。
所述一个或多个程序被所述一个或多个处理器510执行，使得所述一个或多个处理器510实现上述任一实施例所述的无线网络的传输方法。
该通信节点中的存储装置520作为一种计算机可读存储介质，可用于存储一个或多个程序，所述程序可以是软件程序、计算机可执行程序以及模块，如本发明实施例中无线网络的传输方法对应的程序指令/模块(例如，附图7所示无线网络的传输装置中的模块，包括：接收模块310和设置模块320)。处理器510通过运行存储在存储装置520中的软件程序、指令以及模块，从而执行通信节点的各种功能应用以及数据处理，即实现上述方法实施例中的无线网络的传输方法。
存储装置520主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序；存储数据区可存储根据设备的使 用所创建的数据等(如上述实施例中的第一标识信息、NAV等)。此外，存储装置520可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。在一些实例中，存储装置520可进一步包括相对于处理器510远程设置的存储器，这些远程存储器可以通过网络连接至通信节点。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
并且，当上述通信节点中所包括一个或者多个程序被所述一个或者多个处理器510执行时，实现如下操作：接收携带有第一标识信息的PPDU；保持本地存储的NAV不变，或者更新本地存储的NAV并在多接入点传输的过程中忽略所述NAV。这种情况下，本实施例中的通信节点指被触发的第一通信节点。
或者，当上述通信节点中所包括的一个或者多个程序被所述一个或者多个处理器510执行时，实现如下操作：生成PPDU，所述PPDU中携带有第一标识信息；发送所述PPDU。在这种情况下，本实施例中的通信节点指用于触发多接入点传输的第二通信节点。
本实施例提出的通信节点参见上述实施例提出的无线网络的传输方法，未在本实施例中详尽描述的技术细节可参见上述任意实施例，并且本实施例具备与执行无线网络的传输方法相同的有益效果。
本申请实施例还提供一种包含计算机可执行指令的存储介质，计算机可执行指令在由计算机处理器执行时用于执行上述无线网络的传输方法。
通过以上关于实施方式的描述，所属领域的技术人员可以了解到，本申请可借助软件及通用硬件来实现，也可以通过硬件实现。基于这样的理解，本申请的技术方案可以以软件产品的形式体现出来，该计算机软件产品可以存储在计算机可读存储介质中，如计算机的软盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、闪存(FLASH)、硬盘或光盘等，包括多个指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请任意实施例所述的无线网络的传输方法。
以上所述，仅为本申请的示例性实施例而已，并非用于限定本申请的保护范围。
本申请附图中的任何逻辑流程的框图可以表示程序步骤，或者可以表示相互连接的逻辑电路、模块和功能，或者可以表示程序步骤与逻辑电路、模块和功能的组合。计算机程序可以存储在存储器上。存储器可以具有任何适合于本地技术环境的类型并且可以使用任何适合的数据存储技术实现，例如但不限于只读存储器(ROM)、随机访问存储器(RAM)、光存储器装置和系统(数码 多功能光碟(Digital Video Disk，DVD)或便携式紧凑磁盘(Compact Disc，CD))等。计算机可读介质可以包括非瞬时性存储介质。数据处理器可以是任何适合于本地技术环境的类型，例如但不限于通用计算机、专用计算机、微处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、可编程逻辑器件(Field Programmable Gate Array，FPGA)以及基于多核处理器架构的处理器。

Claims (15)

  1. 一种无线网络的传输方法，应用于第一通信节点，包括：
    接收携带有第一标识信息的物理层协议数据单元PPDU；
    保持本地存储的网络分配矢量NAV不变，或者更新本地存储的NAV并在多接入点传输的过程中忽略更新后的NAV。
  2. 根据权利要求1所述的方法，其中，所述第一标识信息用于触发多接入点传输操作；
    所述方法还包括：
    根据所述第一标识信息执行所述多接入点传输操作。
  3. 根据权利要求1所述的方法，其中，所述保持本地存储的NAV不变，包括：
    根据所述第一标识信息将所述PPDU归类为基本服务集外的PPDU，并保持所述本地存储的NAV不变。
  4. 根据权利要求1所述的方法，其中，所述更新本地存储的NAV并在多接入点传输的过程中忽略更新后的NAV，包括：
    根据所述第一标识信息将所述PPDU归类为基本服务集内的PPDU；
    更新本地存储的NAV，并在所述多接入点传输的过程中忽略更新后的NAV。
  5. 根据权利要求1所述的方法，其中，所述保持本地存储的NAV不变，或者更新本地存储的NAV并在多接入点传输的过程中忽略更新后的NAV，包括：
    在所述PPDU还包括第二标识信息的情况下，根据所述第二标识信息决定是否参与所述多接入点传输；
    在参与所述多接入点传输的情况下，更新所述本地存储的NAV，并在所述多接入点传输的过程中忽略更新后的NAV；
    在不参与所述多接入点传输的情况下，保持所述本地存储的NAV不变。
  6. 根据权利要求1所述的方法，其中，
    所述第一标识信息通过所述PPDU中的无线帧的媒体接入控制MAC帧头的第一设定域指示，或者通过所述PPDU的物理层信令域的第二设定域指示；
    在所述PPDU还包括第二标识信息的情况下，所述第二标识信息通过所述PPDU中的无线帧的MAC帧头的第三设定域指示，或者通过所述PPDU的物理层信令域的第四设定域指示。
  7. 根据权利要求1所述的方法，其中，所述本地存储的NAV为多接入点传输NAV。
  8. 一种无线网络的传输方法，应用于第二通信节点，包括：
    生成物理层协议数据单元PPDU，所述PPDU中携带有第一标识信息；
    发送所述PPDU。
  9. 根据权利要求8所述的方法，其中，所述第一标识信息用于触发至少一 个通信节点执行多接入点传输操作。
  10. 根据权利要求8所述的方法，其中，所述PPDU还包括：
    第二标识信息，用于指示PPDU中的无线帧的接收方。
  11. 根据权利要求8所述的方法，其中，所述第一标识信息通过所述PPDU中的无线帧的媒体接入控制MAC帧头的第一设定域指示，或者通过所述PPDU的物理层信令域的第二设定域指示；
    在所述PPDU还包括第二标识信息的情况下，所述第二标识信息通过所述PPDU中的无线帧的MAC帧头的第三设定域指示，或者通过所述PPDU的物理层信令域的第四设定域指示。
  12. 一种无线网络的传输装置，包括：
    接收模块，设置为接收携带有第一标识信息的物理层协议数据单元PPDU；
    设置模块，设置为保持本地存储的网络分配矢量NAV不变，或者更新本地存储的NAV并在多接入点传输的过程中忽略更新后的NAV。
  13. 一种无线网络的传输装置，包括：
    生成模块，设置为生成物理层协议数据单元PPDU，所述PPDU中携带有第一标识信息；
    发送模块，设置为发送所述PPDU。
  14. 一种通信节点，包括：
    一个或多个处理器；
    存储装置，设置为存储一个或多个程序；
    所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现如权利要求1-7中任一项所述的无线网络的传输方法或如权利要求8-11中任一项所述的无线网络的传输方法。
  15. 一种计算机可读存储介质，存储有计算机程序，所述计算机程序被处理器执行时实现如权利要求1-7中任一项所述的无线网络的传输方法或如权利要求8-11中任一项所述的无线网络的传输方法。
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