WO2017075982A1 - Procédé et appareil de transmission de données - Google Patents

Procédé et appareil de transmission de données Download PDF

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Publication number
WO2017075982A1
WO2017075982A1 PCT/CN2016/083960 CN2016083960W WO2017075982A1 WO 2017075982 A1 WO2017075982 A1 WO 2017075982A1 CN 2016083960 W CN2016083960 W CN 2016083960W WO 2017075982 A1 WO2017075982 A1 WO 2017075982A1
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WIPO (PCT)
Prior art keywords
station
channel
scheduled
site
access point
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PCT/CN2016/083960
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English (en)
Chinese (zh)
Inventor
李云波
李彦淳
刘乐
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华为技术有限公司
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Publication of WO2017075982A1 publication Critical patent/WO2017075982A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0062—Avoidance of ingress interference, e.g. ham radio channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/04—Scheduled access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • the present application relates to the field of communications, and in particular, to a data transmission method and apparatus.
  • 802.11ax The Institute of Electrical and Electronics Engineers (English name: institute of electrical and electronics engineers, English abbreviation: IEEE) 802.11ax standard specifies the access point (English full name: access point, English abbreviation: AP) and the site (English full name: station, English abbreviation :STA) uses the transmission mode of orthogonal frequency division multiple access (English abbreviation: OFDMA) to transmit data, that is, a part of the basic bandwidth that each station may occupy. Data is transmitted on the transport channel. Before the data is transmitted between the access point and the site, the access point needs to send a multi-user request to send (English name: MU-RTS) frame to the site, and the station receives the MU-RTS.
  • OFDMA orthogonal frequency division multiple access
  • the station can use the legacy format to repeatedly send and clear the clear to send (clear to send, English abbreviation: CTS) frame to the access point on the transmission channel of each basic bandwidth of the occupied broadband bandwidth. Since each station may transmit data on a part of the basic bandwidth transmission channel of the occupied broadband bandwidth, sending a clear transmission frame on all basic bandwidth transmission channels of the broadband bandwidth occupied by the station may cause excessive protection of the transmission channel, and system resources. The utilization rate is low. In another embodiment, each station transmits a clear transmission frame only on a transmission channel of a basic bandwidth involved in transmitting data, although this can avoid overprotecting the transmission channel, but the transmission channel is divided into a primary channel and a secondary channel.
  • CTS clear to send
  • the current site in the process of receiving data usually first parsing the signaling field on the primary channel, obtaining the bandwidth information and resource allocation information, then parsing the data on the scheduled channel, and then through the resource allocation Information indication to the point
  • the data is parsed on the allocated time-frequency resource.
  • the primary channel is occupied by the overlapping basic service set (English full name: Overlapping basic service set, OBSS)
  • OBSS Overlapping basic service set
  • the resource allocation information cannot be parsed from the channel, so that the data transmitted by the access point on the primary channel cannot be correctly received.
  • Embodiments of the present invention provide a data transmission method and apparatus, which can effectively protect a primary channel while avoiding excessive protection of a transmission channel and improving resource utilization of the system.
  • a data transmission method including:
  • the first station receives a multi-user request sent by the access point to send a MU-RTS frame, the multi-user request sending frame includes an identifier of multiple sites, and a scheduled transmission channel of each of the stations; and then, the first The station determines, according to the identifiers of the multiple sites, that it is a scheduled site;
  • the first station When it is determined that the scheduled transmission channel of the first station includes a primary channel, the first station sends a clear transmission CTS frame to the access point on the scheduled channel of the first station;
  • the first station When it is determined that the scheduled transmission channel of the first station does not include a primary channel, the first station sends a CTS frame to the access point on the primary channel and the scheduled channel of the first station or includes The CTS is transmitted on the primary channel and the smallest continuous channel of the scheduled transmission channel.
  • the data transmission method provided by the foregoing first aspect, after the first station receives the multi-user request sent by the access point to send the MU-RTS frame, the first station determines that it is the scheduled station according to the identifiers of the multiple sites, where The multi-user request transmission frame includes an identifier of the plurality of stations, and a scheduled transmission channel of each of the stations; when it is determined that the scheduled transmission channel of the first station includes a primary channel, the first station Transmitting a CTS frame to the access point on the scheduled channel of the first station; when determining that the scheduled transmission channel of the first station does not include a primary channel, the first station is in the primary channel and the A CTS frame is transmitted to the access point on the scheduled channel of the first station. Therefore, regardless of whether the scheduled transmission channel of the station includes the primary channel, the primary channel can be effectively protected, and the transmission channel is prevented from being overprotected, thereby improving the resource utilization of the system.
  • the method further includes:
  • the first station transmits a CTS frame to the access point on a primary channel of the overlapping basic service set OBSS.
  • the method when it is determined that the scheduled transmission channel of the first station does not include a primary channel, the method further includes:
  • the first station transmits a CTS frame to the access point on a primary channel of the overlapping basic service set OBSS.
  • the method further includes:
  • the first station acquires an identifier of a primary channel of the OBSS.
  • the scheduled transmission channel of the first station determined by the first station, whether or not the primary channel is included, the first station is still in the primary channel of the OBSS
  • the access point sends a CTS frame; or, when it is determined that the scheduled transmission channel of the first station does not include a primary channel, the first station is not only on the scheduled channel of the primary channel and the first station
  • a CTS frame is sent to the access point, and a CTS frame is also sent to the access point on the primary channel of the OBSS.
  • the first station protects the primary channel of the OBSS, prohibits other stations from using the primary channel of the OBSS, prevents other stations from transmitting data to the first station, and can effectively protect the primary channel while avoiding excessive protection of the transmission channel. Improve system resource utilization.
  • a data transmission method including:
  • the first station acquires an identifier of a primary channel of the overlapping basic service set OBSS; the first station receives a multi-user request sent by the access point to send a MU-RTS frame; and then, the first station according to the multiple The identity of the site determines itself as the scheduled site;
  • the first station When it is determined that the scheduled transmission channel of the first station includes a primary channel, the first station sends a clear CTS frame to the access point on the scheduled channel of the first station;
  • the first station When it is determined that the scheduled transmission channel of the first station does not include a primary channel, the first station sends a CTS frame to the access point on a primary channel of the OBSS and a scheduled channel of the first station. .
  • the method when it is determined that the scheduled transmission channel of the first station includes a primary channel, the method further includes:
  • the first station transmits a CTS frame to the access point on a primary channel of the OBSS.
  • the data transmission method provided by the foregoing second aspect, after the first station receives the multi-user request sent by the access point to send the MU-RTS frame, the first station determines that it is the scheduled station according to the identifiers of the multiple sites, where The multi-user request transmission frame includes an identifier of the plurality of stations, and a scheduled transmission channel of each of the stations; when it is determined that the scheduled transmission channel of the first station includes a primary channel, the first station Transmitting a CTS frame to the access point on the scheduled channel of the first station; when determining that the scheduled transmission channel of the first station does not include a primary channel, the first station is in a primary channel of the OBSS Transmitting a CTS frame to the access point on a scheduled channel of the first station; further, when determining that the scheduled transmission channel of the first station includes a primary channel, the first station is also in a primary channel of the OBSS Sending a CTS frame to the access point.
  • the first station protects the primary channel of the OBSS, prohibits other stations from using the primary channel of the OBSS, prevents other stations from transmitting data to the first station, and can effectively protect the primary channel while avoiding excessive protection of the transmission channel. Improve system resource utilization.
  • a site comprising:
  • a receiving unit configured to receive a multi-user request sent by the access point to send a MU-RTS frame
  • a processing unit configured to determine, according to the identifiers of the multiple sites, that the site is a scheduled site
  • a sending unit configured to: when determining that the scheduled transmission channel of the first station includes a primary And the first station sends a clear transmission CTS frame to the access point on the scheduled channel of the first station;
  • the sending unit is further configured to: when it is determined that the scheduled transmission channel of the first station does not include a primary channel, the first station is on the scheduled channel of the primary channel and the first station
  • the access point transmits a CTS frame or transmits a CTS on a minimum contiguous channel containing the primary channel and the scheduled transmission channel.
  • the sending unit is further configured to send a CTS frame to the access point on a primary channel of the overlapping basic service set OBSS.
  • the sending unit is further configured to send a CTS frame to the access point on a primary channel of the overlapping basic service set OBSS.
  • the site further includes:
  • An obtaining unit configured to acquire an identifier of a primary channel of the OBSS.
  • a site comprising:
  • An obtaining unit configured to obtain an identifier of a primary channel of the overlapping basic service set OBSS;
  • a receiving unit configured to receive a multi-user request sent by the access point to send a MU-RTS frame, where the multi-user request sending frame includes an identifier of multiple sites, and a scheduled transmission channel of each of the stations;
  • a processing unit configured to determine, according to the identifiers of the multiple sites, that the site is a scheduled site
  • a sending unit configured to: when determining that the scheduled transmission channel of the first station includes a primary channel, the first station sends a clear sending CTS frame to the access point on the scheduled channel of the first station;
  • the sending unit is further configured to: when determining that the scheduled transmission channel of the first station does not include a primary channel, the first station is on a primary channel of the OBSS and a scheduled channel of the first station
  • the access point sends a CTS frame.
  • the sending unit is further configured to send a CTS frame to the access point on a primary channel of the OBSS.
  • a site comprising:
  • a receiver configured to receive a multi-user request sent by the access point to send a MU-RTS frame
  • a processor configured to determine, according to the identifiers of the multiple sites, a site that is scheduled
  • a transmitter configured to: when determining that the scheduled transmission channel of the first station includes a primary channel, the first station sends a clear CTS frame to the access point on a scheduled channel of the first station;
  • the transmitter is further configured to: when it is determined that the scheduled transmission channel of the first station does not include a primary channel, the first station is on the scheduled channel of the primary channel and the first station The access point sends a CTS frame.
  • the sending unit is further configured to send a CTS frame to the access point on a primary channel of the overlapping basic service set OBSS.
  • the sending unit is further configured to send a CTS frame to the access point on a primary channel of the overlapping basic service set OBSS.
  • the site further includes:
  • An obtaining unit configured to acquire an identifier of a primary channel of the OBSS.
  • a site comprising:
  • a processor configured to obtain an identifier of a primary channel of the overlapping basic service set OBSS;
  • a receiver configured to receive a multi-user request sent by the access point to send a MU-RTS frame, where the multi-user request transmission frame includes an identifier of multiple sites, and a scheduled transmission channel of each of the stations;
  • the processor is further configured to determine, according to the identifiers of the multiple sites, that the site is a scheduled site;
  • a transmitter configured to: when determining that the scheduled transmission channel of the first station includes a primary channel, the first station sends a clear transmission CTS frame to the access point on a scheduled channel of the first station;
  • the transmitter is further configured to: when determining that the scheduled transmission channel of the first station does not include a primary channel, the first station is on a primary channel of the OBSS and a scheduled channel of the first station
  • the access point sends a CTS frame.
  • the transmitter is further configured to send a CTS frame to the access point on a primary channel of the OBSS.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a structure of an access point and a site according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a transmission channel according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a data transmission manner according to an embodiment of the present invention.
  • FIG. 6 is a flowchart of another data transmission method according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of another data transmission manner according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of still another data transmission manner according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of still another data transmission manner according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of another data transmission manner according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of still another data transmission manner according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of still another data transmission manner according to an embodiment of the present invention.
  • FIG. 13 is a schematic diagram of still another data transmission manner according to an embodiment of the present invention.
  • FIG. 14 is a schematic structural diagram of a station according to an embodiment of the present invention.
  • FIG. 15 is a schematic structural diagram of another station according to an embodiment of the present invention.
  • FIG. 16 is a schematic structural diagram of another station according to an embodiment of the present invention.
  • FIG. 17 is a schematic diagram of still another data transmission manner according to an embodiment of the present invention.
  • FIG. 18 is a schematic diagram of another data transmission manner according to an embodiment of the present invention.
  • FIG. 19 is a schematic diagram of still another data transmission manner according to an embodiment of the present invention.
  • the basic principle of the present invention is that the station determines that the scheduled transmission channel of the station includes the primary channel, and the station sends a clear to send (English name: Clear to send, English abbreviation: CTS) frame to the access point on the scheduled channel of the station; The station judges that the scheduled transmission channel of the station does not include the primary channel, and the station transmits a CTS frame to the access point on the scheduled channel and the primary channel of the station.
  • a clear to send English name: Clear to send, English abbreviation: CTS
  • the embodiment of the present invention provides a schematic diagram of a communication system.
  • the communication system includes an access point (English name: access point, English abbreviation: AP), and a site (English full name: station, English abbreviation: STA). , Site 1, Site 2, and Site 3.
  • the access point can be the central node of the communication system, for example, the wireless router used in the home or office is the access point.
  • the site can be a laptop, a handheld computer (English full name: Personal Digital Assistant, English abbreviation: PDA) and other user equipment.
  • the communication system may further include a server and a communication network.
  • the access point is connected to the server through a communication network, and each station can establish a connection with the access point, and the station acquires information from the server through the communication network.
  • the server can be a Tencent server or a 360 server.
  • the communication network can be a conventional Internet Protocol (IP) network.
  • the Institute of Electrical and Electronics Engineers (English name: institute of electrical and electronics engineers, English abbreviation: IEEE) 802.11ac standard specifies the access point (English full name: access point, English abbreviation: AP) and the site (English full name: station, English abbreviation :STA) uses data transmission over a transmission channel with broadband bandwidth.
  • the broadband bandwidth is composed of a plurality of basic bandwidths, and the basic bandwidth may be a bandwidth of 20 MHz (English name: mega hertz, English abbreviation: MHz), and the broadband bandwidth may be a bandwidth of 40 MHz, 80 MHz, or 160 MHz.
  • the transmission mode of the orthogonal frequency division multiplexing (English abbreviation: OFDM) is used to transmit data between the access point and the station, that is, each basic bandwidth of each occupied broadband bandwidth. The same data is transmitted on the transport channel.
  • OFDM is a modulation method
  • OFDMA is a multiple access technology
  • users share frequency band resources through OFDMA to access the system.
  • Bandwidth refers to the amount of data that can be transferred at a fixed time, that is, the ability to pass data in the transmission pipeline. It is usually expressed in transmission cycles per second or Hertz (hertz: English, abbreviation: Hz).
  • the IEEE 802.11 protocol suite is a standard established by the IEEE for wireless local area networks.
  • the access point and the station may also transmit data by using a transmission mode of orthogonal frequency division multiple access (English abbreviation: OFDMA) specified by the IEEE802.11ax standard.
  • OFDMA orthogonal frequency division multiple access
  • the access point needs to send a multi-user request to send (English name: MU-RTS) frame to the site, and the station receives the MU-RTS. After the frame, the station repeatedly sends a CTS frame to the access point.
  • OFDMA orthogonal frequency division multiple access
  • the embodiment of the present invention provides a structure of an access point and a structure of a station.
  • the access point 11 includes a transmitter 111, a processor 112, and a receiver 113.
  • the station 12 includes a transmitter 121 and a processor. 122 and receiver 123.
  • the sending unit of the access point Before transmitting data between the access point and the site, the sending unit of the access point needs to send a multi-user request to send (multi-user request to send, English abbreviation: MU-RTS) frame to the site, and the receiving of the site
  • the processing unit of the station determines whether the scheduled transmission channel of the station includes the primary channel, and when the scheduled transmission channel of the station includes the primary channel, the sending unit of the station is scheduled at the station. Transmitting a CTS frame to a receiving unit of the access point on the channel; when the scheduled transmission channel of the station does not include the primary channel, the transmitting unit of the station sends the receiving channel of the primary channel and the station to the receiving unit of the access point CTS frame.
  • Site 12 also includes a memory for storing the identity of the primary channel.
  • the processor may also obtain the identifier of the primary channel of the overlapping basic service set (English full name: Overlapping basic service set, English abbreviation: OBSS).
  • the station also transmits a CTS frame to the access point on the primary channel of the OBSS.
  • the embodiment of the present invention provides a data transmission method, which is assumed to be based on the access point and the site in the communication system shown in FIG. 1, as shown in FIG.
  • Step 101 The access point sends a multi-user request to send a frame to the station.
  • a multi-user request to send (English name: MU-RTS) frame includes an identifier of a plurality of stations, and a scheduled transmission channel of each of the stations, the scheduled transmission channel of the station For the transmission channel allocated by the access point to the station, the station can occupy the transmission channel for which the access point allocates data.
  • the identifier of the site may be an association identifier (English full name: association identifier, English abbreviation: AID) or media intervention control (English full name: Media Access Control, English abbreviation: MAC) address.
  • the identification of the channel may be explicitly represented, for example, by using a bitmap, where each bit represents a basic channel, when set to 1 indicates that the station is scheduled to the basic channel, and setting to 0 indicates that the station is not scheduled to the basic channel. .
  • the identification of the channel may also be implicitly represented.
  • One possible way is to represent the basic channel location to which the station is scheduled by the order of the station identification, for example, the first station is scheduled to the first basic channel, the nth station. It is scheduled to the nth basic channel. This indication method has limitations on the data of the scheduling site, and the number of scheduled stations cannot exceed the number of basic channels.
  • the present invention does not limit the frame format and transmission mode of the MU-RTS frame.
  • the MU-RTS can multiplex the request to send (English full name: request to send, English abbreviation: RTS) frame, and modify the receiving address (English full name: receive address, English abbreviation: RA) in the RTS frame into multiple receiving The AID of the site, thereby enabling the access point to schedule multiple sites.
  • the MU-RTS may be transmitted only on the primary channel or repeatedly on all channels of the primary channel and the secondary channel in the transmission channel.
  • the present invention recommends repeating transmissions on all channels of the transport channel to better protect the primary channel and the secondary channel.
  • the transport channel includes one primary channel and a plurality of secondary channels.
  • the bandwidth of the primary channel may be 20 MHz bandwidth
  • the bandwidth of the secondary channel may be greater than or equal to 20 MHz, and may be a bandwidth of 40 MHz, 80 MHz, 80 MHz, or 160 MHz.
  • IEEE802.11ax introduces OFDMA
  • each station can be scheduled to transmit to any 20MHz, so the bandwidth of the slave channel with a bandwidth greater than 20MHz can be divided into multiple slave channels according to the bandwidth of the primary channel.
  • a total bandwidth of 80 MHz is taken as an example, which includes a 20 MHz primary channel, that is, CH0 in FIG. 5 and FIG. 7 to FIG. 9 and three 20 MHz slave channels, that is, FIG. 5 and FIG. To CH1, CH2 and CH3 in Fig. 9.
  • Step 102 Site 0 receives a multi-user request transmission frame sent by the access point.
  • the multi-user request to send frame includes an identification of a plurality of stations, and a scheduled transmission channel for each of the stations.
  • Step 103 Site 0 determines that the site 0 is the scheduled site according to the identifier of the site 0 and the identifiers of the multiple sites.
  • Site 0 first parses the multi-user request to send a frame, obtains an identifier of multiple sites from the multi-user request transmission frame, and a scheduled transmission channel of each of the stations; and then, station 0 identifies the identifier of the site 0 Determining the identifiers of the sites in the identifiers of the multiple sites one by one. If the identifiers of the sites include the same identifiers of the sites as the site 0, determine that the site 0 is the scheduled site. .
  • Step 104 Site 0 determines whether the scheduled transmission channel of Site 0 includes the primary channel.
  • step 105 is performed.
  • step 106 is performed.
  • the scheduled transmission channel included in the multi-user request transmission frame received by the station 0 may be an identifier of the scheduled transmission channel, and the station 0 may determine the scheduled transmission. Whether the identity of the channel contains the identity of the primary channel.
  • the access point may pre-store the identifier of the primary channel.
  • the identifier of the primary channel may be included in the multi-user request transmission frame sent by the access point. After receiving the multi-user request to send the frame, the station 0 can obtain the identifier of the primary channel from the multi-user request transmission frame. Site 0 can also pre-store the identity of the primary channel.
  • Step 105 Site 0 sends a CTS frame to the access point on the scheduled channel of Site 0.
  • Step 106 Site 0 sends a CTS frame to the access point on the primary channel and the scheduled channel of Site 0.
  • a specific method for simultaneously transmitting CTSs on multiple channels on the same channel may refer to the prior art. Since multiple CTSs are triggered by the same MU-RTS, the content sent by the site to the access point can be identical.
  • the scrambling seed that normally scrambles the CTS frame is randomly generated by the site, so even the exact same content will vary depending on the scrambling seed selection. All stations can use the scrambling seed of the MU-RTS frame or a field in the MU-RTS frame as the scrambling seed to achieve the same purpose of the scrambling seed of all stations.
  • Site 1, Site 2, and Site 3 can send clear clear transmission frames to the access point by referring to the specific method of Step 102 to Step 106.
  • the first station determines that it is the scheduled station according to the identifiers of the multiple sites, where the multi-user requests to send
  • the frame includes an identification of the plurality of stations, and a scheduled transmission channel of each of the stations; when it is determined that the scheduled transmission channel of the first station includes a primary channel, the first station is at the first station Transmitting a CTS frame to the access point on the scheduled channel; when determining that the scheduled transmission channel of the first station does not include a primary channel, the first station is at the primary channel and the first site A CTS frame is transmitted to the access point on the scheduling channel. Therefore, regardless of whether the scheduled transmission channel of the station includes the primary channel, the primary channel can be effectively protected, and the transmission channel is prevented from being overprotected, thereby improving the resource utilization of the system.
  • FIG. 5 a schematic diagram of a data transmission mode, assuming that CH0 is a main message.
  • the channels, CH1, CH2 and CH3 are all slave channels.
  • Site 0, Site 1, Site 2, and Site 3 store the identity of the primary channel, respectively.
  • Site 0 determines that the scheduled channel of Site 0 is CH0, and determines that the scheduled transmission channel of Site 0 contains the primary channel, and Site 0 is at CH0.
  • Site 1 determines that the scheduled channel of Site 1 is CH1, and determines that the scheduled transport channel of Site 1 does not contain the primary channel, and Site 1 sends a Clear Transmit frame to the access point on CH0 and CH1.
  • Site 2 determines that the scheduled channel of station 2 is CH2, and determines that the scheduled transmission channel of station 2 does not contain the primary channel, and station 2 sends a clear transmission frame to the access point on CH0 and CH2.
  • the station 3 determines that the scheduled channel of the station 3 is CH3, and judges that the scheduled transmission channel of the station 3 does not include the primary channel, and the station 3 transmits the clear transmission frame to the access point on CH0 and CH3.
  • the access point may send data to multiple sites on the channel that successfully receives the CTS frame as shown in FIG. 5, and the station successfully receives the data and then accesses the data.
  • the point sends a block confirmation frame (English full name: block acknowledgment, English abbreviation: BA) to confirm the data.
  • BA block acknowledgment
  • the access point may also allocate multiple sites for uplink data transmission on the channel that successfully receives the CTS frame.
  • the uplink or downlink multi-user data transmission process after the CTS is not the focus of the present invention and will not be discussed in detail herein.
  • the embodiment of the present invention provides a data transmission method, which is assumed to be based on the access point and the site shown in FIG. 1. As shown in FIG. 6, the method includes:
  • Step 201 Site 0 acquires an identifier of a primary channel of the overlapping basic service set.
  • the site can listen to the location of the primary channel of the overlapping basic service set (English full name: Overlapping basic service set, English abbreviation: OBSS).
  • OBSS Overlapping basic service set
  • the specific listening mode is not limited in the present invention.
  • the OBSS is geographically adjacent to the base station subsystem (English full name: Base Station Subsystem, English abbreviation: BSS), so the coverage of the wireless transmission signals of both of them overlaps partially or completely. All or part of the channels of the OBSS and the BSS overlap.
  • the station may periodically listen to beacon frames on the primary channel and each secondary channel of the present BSS to determine if OBSS is present.
  • the main channel of this BSS is this BSS
  • the AP transmits the channel of the beacon frame. If other beacon frames are also detected on the primary channel or the secondary channel of the BSS, the OBSS is considered to exist, and the channel transmitting the other beacon frame is the primary channel of the OBSS; If no other beacon frames are detected on the primary channel and the secondary channel of the BSS, it is considered that there is no OBSS.
  • the station can notify the primary channel location of the OBSS around the access point by associating the access point.
  • Step 202 Site 0 receives a multi-user request transmission frame sent by the access point.
  • the access point sends a multi-user request to send the frame to the station, and the station 0 receives the multi-user request to send the frame sent by the access point.
  • Step 203 Site 0 determines that the site 0 is the scheduled site according to the identifier of the site 0 and the identifiers of the multiple sites.
  • step 202 to step 203 may refer to reference steps 101 to 103.
  • Step 204 Site 0 determines whether the scheduled transmission channel of Site 0 includes the primary channel.
  • step 205 is performed.
  • step 206 is performed.
  • Step 205 Site 0 sends a CTS frame to the access point on the primary channel of the OBSS and the scheduled channel of Site 0.
  • Step 206 Site 0 sends a CTS frame to the access point on the primary channel of the OBSS, the primary channel, and the scheduled channel of Site 0.
  • Site 1, Site 2, and Site 3 can send a clear send frame to the access point by referring to the specific method of Step 202 to Step 207.
  • FIG. 7 a schematic diagram of a data transmission mode, where Site 0, Site 1, Site 2, and Site 3 respectively obtain the identity of the primary channel of the overlapping basic service set, assuming that CH0 is the primary channel and CH1 is the basic of the overlap.
  • Site 0, Site 1, Site 2, and Site 3 store the identity of the primary channel, respectively.
  • Site 0 determines that Site 0 is tuned.
  • the degree channel is CH0, and it is judged that the scheduled transmission channel of station 0 contains the primary channel, and station 0 transmits the clear transmission frame to the access point on CH0 and CH1.
  • Site 1 determines that the scheduled channel of Site 1 is CH1, and determines that the scheduled transport channel of Site 1 does not contain the primary channel, and Site 1 sends a Clear Transmit frame to the access point on CH0 and CH1.
  • Site 2 determines that the scheduled channel of Site 2 is CH2, and determines that the scheduled transport channel of Site 2 does not contain the primary channel, and Site 2 sends a Clear Transmit Frame to the access point on CH0, CH1, and CH2.
  • Site 3 determines that the scheduled channel of station 3 is CH3, and determines that the scheduled transport channel of station 3 does not contain the primary channel, and station 3 transmits a clear transmit frame to the access point on CH0, CH1, and CH3.
  • station 0 when station 0 determines that the scheduled transmission channel of station 0 includes the primary channel, station 0 transmits a CTS frame to the access point on the scheduled channel of station 0.
  • station 0 determines that the scheduled transmission channel of station 0 does not contain the primary channel, station 0 transmits a CTS frame to the access point on the primary channel of the OBSS, the primary channel, and the scheduled channel of station 0.
  • FIG. 8 a schematic diagram of a data transmission mode, where Site 0, Site 1, Site 2, and Site 3 respectively obtain the identity of the primary channel of the overlapping basic service set, assuming that CH0 is the primary channel and CH1 is the basic of the overlap.
  • Site 0, Site 1, Site 2, and Site 3 store the identity of the primary channel, respectively.
  • Site 0 determines that the scheduled channel of Site 0 is CH0, and determines that the scheduled transmission channel of Site 0 contains the primary channel, and Site 0 is at CH0.
  • Site 1 determines that the scheduled channel of Site 1 is CH1, and determines that the scheduled transport channel of Site 1 does not contain the primary channel, and Site 1 sends a Clear Transmit frame to the access point on CH0 and CH1.
  • Site 2 determines that the scheduled channel of Site 2 is CH2, and determines that the scheduled transport channel of Site 2 does not contain the primary channel, and Site 2 sends a Clear Transmit Frame to the access point on CH0, CH1, and CH2.
  • Site 3 determines that the scheduled channel of station 3 is CH3, and determines that the scheduled transport channel of station 3 does not contain the primary channel, and station 3 transmits a clear transmit frame to the access point on CH0, CH1, and CH3.
  • station 0 when station 0 determines that the scheduled transmission channel of station 0 includes the primary channel, station 0 transmits a CTS frame to the access point on the scheduled channel of station 0.
  • site 0 The scheduled transport channel of the broken station 0 does not contain the primary channel, and the station 0 transmits the CTS frame to the access point on the primary channel of the OBSS and the scheduled channel of the station 0.
  • FIG. 9 a schematic diagram of a data transmission mode, where Site 0, Site 1, Site 2, and Site 3 respectively obtain the identity of the primary channel of the overlapping basic service set, assuming that CH0 is the primary channel and CH1 is the basic of the overlap.
  • Site 0, Site 1, Site 2, and Site 3 store the identity of the primary channel, respectively.
  • Site 0 determines that the scheduled channel of Site 0 is CH0, and determines that the scheduled transmission channel of Site 0 contains the primary channel, and Site 0 is at CH0.
  • Site 1 determines that the scheduled channel of Site 1 is CH1, and determines that the scheduled transport channel of Site 1 does not contain the primary channel, and Site 1 sends a Clear Transmit Frame to the access point on CH1.
  • Site 2 determines that the scheduled channel of Site 2 is CH2, and determines that the scheduled transport channel of Site 2 does not contain the primary channel, and Site 2 sends a Clear Transmit frame to the access point on CH1 and CH2.
  • Site 3 determines that the scheduled channel of station 3 is CH3, and determines that the scheduled transport channel of station 3 does not contain the primary channel, and station 3 sends a clear transmit frame to the access point on CH1 and CH3.
  • station 0 when station 0 determines that the scheduled transmission channel of station 0 includes the primary channel, station 0 sends a CTS frame to the access point on the primary channel of the OBSS and the scheduled channel of station 0.
  • station 0 determines that the scheduled transmission channel of station 0 does not contain the primary channel, station 0 transmits a CTS frame to the access point on the primary channel of the OBSS and the scheduled channel of station 0.
  • FIG. 10 a schematic diagram of a data transmission mode, where Site 0, Site 1, Site 2, and Site 3 respectively obtain the identity of the primary channel of the overlapping basic service set, assuming that CH0 is the primary channel and CH1 is the overlapping basic.
  • Site 0, Site 1, Site 2, and Site 3 store the identity of the primary channel, respectively.
  • Site 0 determines that the scheduled channel of Site 0 is CH0, and determines that the scheduled transmission channel of Site 0 contains the primary channel, and Site 0 is at CH0. And send a clear send frame to the access point on CH1.
  • Site 1 determines that the scheduled channel of Site 1 is CH1, and determines that the scheduled transport channel of Site 1 does not contain the primary channel, and Site 1 sends a Clear Transmit Frame to the access point on CH1.
  • Site 2 determines that the scheduled channel of Site 2 is CH2 and determines that the scheduled transport channel of Site 2 does not contain the primary Channel, station 2 sends a clear transmission frame to the access point on CH1 and CH2.
  • Site 3 determines that the scheduled channel of station 3 is CH3, and determines that the scheduled transport channel of station 3 does not contain the primary channel, and station 3 sends a clear transmit frame to the access point on CH1 and CH3.
  • the clearing of the sending frame is performed in a legacy format, that is, using the OFDM format on the transmission channel of the basic bandwidth, and transmitting in a repeated manner on the transmission channel of the broadband bandwidth.
  • the station may send an OFDMA CTS frame before or after sending a clear transmission frame to the access point, so that the station and the access point can identify which stations have successfully received the MU-RTS and replies to the OFDMA CTS and the legacy CTS.
  • the OFDMA CTS is transmitted before the CTS, so that the access point can know that those stations have replied as early as possible, so that there is sufficient time for downlink data scheduling after the CTS.
  • the OFDMA CTS is transmitted after the CTS, so that the legacy station can receive the CTS frame as early as possible to better perform channel protection. Both methods can be applied to the present invention.
  • the OFDMA CTS frame includes an OFDM part and an OFDMA part.
  • the OFDM part includes a non-high-throughput short training field (English name: non-HT Short Training Field, English abbreviation: L-STF), and a non-high-throughput long training field (English name: non-HT Long Training Field, English) Abbreviation: L-LTF), non-high-throughput signaling domain (English name: non-HT SIGNAL field, English abbreviation: L-SIG) and efficient signaling domain A (English full name: High Efficiency SIGNAL A, English abbreviation :HE-SIG A).
  • the OFDMA part includes an efficient short training field (English name: High Efficiency Short Training Field, English abbreviation: HE-STF) and HE-payload.
  • Each part of the OFDM part occupies a transmission channel occupying the entire basic bandwidth, and the content transmitted by multiple stations is the same, and overlaps in time and frequency, and the access point transmits the overlapping transmission of multiple stations as one transmission information. To resolve.
  • Each part of the OFDMA part occupies a part of the OFDMA subchannel for transmission.
  • the content sent by multiple stations is different and orthogonal in the frequency domain.
  • the access point can simultaneously parse the content of different sites.
  • the transmission mode of the OFDMA CTS As shown in FIG. 12, based on the scenario of the site data transmission of FIG. 5, the transmission mode of the OFDMA CTS.
  • the station scheduled to the primary channel transmits the OFDMA CTS on the primary channel
  • the OFDM part and the OFDMA part; the OFDM part and the OFDMA part of the OFDMA CTS are repeatedly transmitted on the scheduled channel and the primary channel by the station scheduled to the slave channel.
  • the transmit channel of its OFDMA CTS is the same as the transmit channel of the CTS.
  • the station transmits an OFDMA CTS frame on the scheduled channel, including an OFDM part and an OFDMA part. Moreover, only the OFDM portion of the OFDMA CTS is repeatedly transmitted on the primary channel and/or the primary channel of the OBSS on which the CTS needs to be transmitted, and the OFDMA portion is not transmitted.
  • the transmission mode of the OFDMA CTS is based on the scenario of the site data transmission of FIG.
  • the station scheduled at the primary channel transmits the OFDM portion and the OFDMA portion of the OFDMA CTS on the primary channel; the station scheduled to the secondary channel transmits the OFDM portion and the OFDMA portion of the OFDMA CTS on the scheduled channel and repeats only on the primary channel
  • the OFDM portion of the OFDMA CTS is transmitted without transmitting the OFDMA portion.
  • the scenarios of the scenes of other embodiments are similar.
  • the transmit channel of its OFDMA CTS is the same as the transmit channel of the CTS.
  • An embodiment of the present invention provides a site 30, as shown in FIG. 14, including:
  • the receiving unit 301 is configured to receive, by the access point, a multi-user request to send a MU-RTS frame, where the multi-user request sending frame includes an identifier of multiple sites, and a scheduled transmission channel of each of the stations;
  • the processing unit 302 is configured to determine, according to the identifiers of the multiple sites, that the site is a scheduled site;
  • a sending unit 303 configured to: when determining that the scheduled transmission channel of the first station includes a primary channel, the first station sends a CTS frame to the access point on a scheduled channel of the first station;
  • the sending unit 303 is further configured to: when determining that the scheduled transmission channel of the first station does not include a primary channel, the first station is located on the scheduled channel of the primary channel and the first station The access point sends a CTS frame.
  • the data transmission method provided by the embodiment of the present invention after the first station receives the multi-user request sent by the access point to send the MU-RTS frame, the first station is based on multiple sites.
  • the identity identifies itself as a scheduled site, wherein the multi-user request transmission frame includes an identity of the plurality of sites, and a scheduled transmission channel for each of the sites; when determining the scheduled transmission of the first site
  • the first station sends a CTS frame to the access point on the scheduled channel of the first station; when it is determined that the scheduled transmission channel of the first station does not include the primary channel,
  • the first station transmits a CTS frame to the access point on the primary channel and the scheduled channel of the first station. Therefore, regardless of whether the scheduled transmission channel of the station includes the primary channel, the primary channel can be effectively protected, and the transmission channel is prevented from being overprotected, thereby improving the resource utilization of the system.
  • the site 30 further includes:
  • the obtaining unit 304 is configured to acquire an identifier of a primary channel of the overlapping basic service set OBSS.
  • the sending unit 303 is further configured to send a CTS frame to the access point on a primary channel of the OBSS.
  • the sending unit 303 is further configured to send a CTS frame to the access point on a primary channel of the OBSS.
  • the first station determines the scheduled transmission channel of the first station whether or not the primary channel is included, and the first station also sends a CTS frame to the access point on the primary channel of the OBSS; or, when determining the first
  • the first station not only sends a CTS frame to the access point on the scheduled channel of the primary channel and the first station, but also is a primary channel of the OBSS. Sending a CTS frame to the access point. Therefore, the first station protects the primary channel of the OBSS, prohibits other stations from using the primary channel of the OBSS, prevents other stations from transmitting data to the first station, and can effectively protect the primary channel while avoiding excessive protection of the transmission channel.
  • An embodiment of the present invention provides a site 40, as shown in FIG. 16, including:
  • An obtaining unit 401 configured to acquire an identifier of a primary channel of the overlapping basic service set OBSS;
  • the receiving unit 402 is configured to receive, by the access point, a multi-user request to send a MU-RTS frame, where the multi-user request sending frame includes an identifier of multiple sites, and a scheduled transmission channel of each of the stations;
  • the processing unit 403 is configured to determine, according to the identifiers of the multiple sites, that the site is a scheduled site;
  • a sending unit 404 configured to: when determining that the scheduled transmission channel of the first station includes a primary channel, the first station sends a CTS frame to the access point on a scheduled channel of the first station;
  • the sending unit 404 is further configured to: when determining that the scheduled transmission channel of the first station does not include a primary channel, the first station is on a primary channel of the OBSS and a scheduled channel of the first station Sending a CTS frame to the access point.
  • the sending unit 404 is further configured to send a CTS frame to the access point on a primary channel of the OBSS.
  • the data transmission method provided by the embodiment of the present invention, after the first station receives the multi-user request to send the MU-RTS frame sent by the access point, the first station determines that it is the scheduled station according to the identifiers of the multiple sites, where The multi-user request transmission frame includes an identifier of the plurality of stations, and a scheduled transmission channel of each of the stations; when it is determined that the scheduled transmission channel of the first station includes a primary channel, the first station Transmitting a CTS frame to the access point on the scheduled channel of the first station; when determining that the scheduled transmission channel of the first station does not include a primary channel, the first station is in a primary channel of the OBSS Transmitting a CTS frame to the access point on a scheduled channel of the first station; further, when determining that the scheduled transmission channel of the first station includes a primary channel, the first station is also in a primary channel of the OBSS Sending a CTS frame to the access point.
  • the first station protects the primary channel of the OBSS, prohibits other stations from using the primary channel of the OBSS, prevents other stations from transmitting data to the first station, and can effectively protect the primary channel while avoiding excessive protection of the transmission channel. Improve system resource utilization.
  • channels CH0 and CH1 are assumed.
  • CH2 and CH3 are sequentially adjacent and continuous in frequency, that is, CH0>CH1>CH2>CH3 or CH0 ⁇ CH1 ⁇ CH2 ⁇ CH3.
  • the transmission resource that STA3 is scheduled by the AP is channel 3 (CH3). Then STA3 transmits on the smallest continuous channel including its primary channel (CH0) and scheduled transmission channel (CH3), and the smallest continuous channel including its primary channel (CH0) and scheduled transmission channel (CH3) is CH0, CH1. CH2, CH3.
  • the advantage of this method of transmitting CTS using the minimum continuous channel is that since STA3 also transmits CTS on CH1 sandwiched between CH0 and CH2, 3, the signal power spectrum transmitted by STA3 is continuous in frequency, and signal generation difficulty is small. In addition, when STA3 receives the signal, STA3 will not be interfered on CH2 because STA3 performs channel protection on CH2.
  • the transmission key signaling channel in each of the examples of the present invention may be a single channel. It can also be a plurality of channels (such as CH0, CH1), and the primary channel included in the CTS transmission can be a multi-channel key signaling channel.
  • the STA2 transmits on the smallest continuous channel including its primary channel (CH0) and the scheduled transmission channel (CH2), That is, CH0, CH1, and CH2.
  • STA2 transmits on a channel including a minimum channel bonding mode combination of its primary channel (CH0) and a channel (CH2) in which the transmission resource is located (for example, a channel combination defined by 802.11ac), that is, CH0, CH1, CH2, CH3.
  • CH0 primary channel
  • CH2 channel in which the transmission resource is located
  • 802.11ac a channel combination defined by 802.11ac
  • the original 11ac system's CTS transmission combination is 20MHz, 40MHz (ie 20MHz + 20MHz), 80MHz (ie 20MHz + 20MHz + 20MHz + 20MHz), and 160MHz (ie 20MHz + 20MHz + 20MHz + 20MHz + 20MHz + 20MHz + 20MHz + 20MHz + 20MHz ).
  • the receiving unit in this embodiment may be a receiver of the station, and the sending unit may be a transmitter of the station; in addition, the receiving unit and the sending unit may be integrated to form a transceiver of the station.
  • the processing unit can be the processor of the site.
  • the processor described herein may be a central processing unit (English name: Central Processing Unit, English abbreviation: CPU), or a specific integrated circuit (English name: Application Specific Integrated Circuit, English abbreviation: ASIC), or One or more integrated circuits are configured to implement embodiments of the present invention.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed.
  • the foregoing storage medium includes: a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. The medium of the code.

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  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Les modes de réalisation de l'invention concernent le domaine des communications. L'invention concerne un procédé et un appareil de transmission de données. Le procédé comprend les étapes suivantes : une première station reçoit des trames de Demande pour émettre multiutilisateur (MU-RTS) envoyées par un point d'accès, les trames MU-RTS contenant des identifiants d'une pluralité de stations et de canaux de transmission programmés de chaque station; la première station détermine des stations programmées de la première station d'après les identifiants de la pluralité de stations; lorsqu'il est déterminé que les canaux de transmission programmés de la première station comprennent des canaux principaux, la première station envoie des trames de Prêt à émettre (CTS) au point d'accès sur les canaux de transmission programmés de la première station; et lorsqu'il est déterminé que les canaux de transmission programmés de la première station ne comprennent pas les canaux principaux, la première station envoie des trames CTS au point d'accès sur les canaux principaux et les canaux de transmission programmés de la première station ou envoie des trames CTS sur des canaux continus minimum comprenant les canaux principaux et les canaux de transmission programmés afin d'acquérir des informations de trajet de paquets de service. Grâce à la présente invention, des canaux principaux peuvent être efficacement protégés et une protection excessive sur des canaux de transmission peut être évitée, ce qui améliore le taux d'utilisation des ressources d'un système.
PCT/CN2016/083960 2015-11-04 2016-05-30 Procédé et appareil de transmission de données WO2017075982A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022127505A1 (fr) * 2020-12-18 2022-06-23 华为技术有限公司 Procédé et dispositif de transmission d'unité de données de protocole (ppdu)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110831215B (zh) * 2018-08-10 2023-12-12 华为技术有限公司 数据调度的方法和装置
CN113972960A (zh) * 2020-07-22 2022-01-25 华为技术有限公司 一种数据加扰方法、数据解扰方法及相关设备
WO2022110130A1 (fr) * 2020-11-30 2022-06-02 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Point d'accès, station, et procédé de communication sans fil

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102355739A (zh) * 2011-06-30 2012-02-15 华中科技大学 一种基于声波通信的无线传感器网络信道接入方法
CN102595623A (zh) * 2011-01-13 2012-07-18 中兴通讯股份有限公司 一种多帧传输方法及系统
CN103974447A (zh) * 2013-02-06 2014-08-06 华为技术有限公司 数据传输方法、装置和系统
WO2014123358A1 (fr) * 2013-02-06 2014-08-14 엘지전자 주식회사 Procédé et appareil permettant de transmettre une liaison montante dans un système de communication sans fil
CN104125046A (zh) * 2013-04-28 2014-10-29 华为技术有限公司 一种数据传输方法、装置及系统

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011120333A1 (fr) * 2010-03-31 2011-10-06 The Hong Kong University Of Science And Technology Transmission et/ou réception de données dans un canal latéral
JP5683715B2 (ja) * 2010-11-16 2015-03-11 インターデイジタル パテント ホールディングス インコーポレイテッド 無線ダイレクトリンクオペレーションに関する方法および装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102595623A (zh) * 2011-01-13 2012-07-18 中兴通讯股份有限公司 一种多帧传输方法及系统
CN102355739A (zh) * 2011-06-30 2012-02-15 华中科技大学 一种基于声波通信的无线传感器网络信道接入方法
CN103974447A (zh) * 2013-02-06 2014-08-06 华为技术有限公司 数据传输方法、装置和系统
WO2014123358A1 (fr) * 2013-02-06 2014-08-14 엘지전자 주식회사 Procédé et appareil permettant de transmettre une liaison montante dans un système de communication sans fil
CN104125046A (zh) * 2013-04-28 2014-10-29 华为技术有限公司 一种数据传输方法、装置及系统

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022127505A1 (fr) * 2020-12-18 2022-06-23 华为技术有限公司 Procédé et dispositif de transmission d'unité de données de protocole (ppdu)

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