WO2017133416A1 - 无线局域网中协作传输的方法及装置 - Google Patents

无线局域网中协作传输的方法及装置 Download PDF

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Publication number
WO2017133416A1
WO2017133416A1 PCT/CN2017/070968 CN2017070968W WO2017133416A1 WO 2017133416 A1 WO2017133416 A1 WO 2017133416A1 CN 2017070968 W CN2017070968 W CN 2017070968W WO 2017133416 A1 WO2017133416 A1 WO 2017133416A1
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Prior art keywords
data
access point
control protocol
point
received
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PCT/CN2017/070968
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English (en)
French (fr)
Inventor
韩志强
侯蓉晖
王祖袖
吕开颖
孙波
李楠
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中兴通讯股份有限公司
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Publication of WO2017133416A1 publication Critical patent/WO2017133416A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • 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
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H04L1/0618—Space-time coding
    • H04L1/0675—Space-time coding characterised by the signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1692—Physical properties of the supervisory signal, e.g. acknowledgement by energy bursts
    • 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
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • 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]

Definitions

  • the present invention relates to the field of communications, and in particular to a method and apparatus for cooperative transmission in a wireless local area network.
  • FIG. 1 is a schematic diagram of a basic structure of a radio frame in the related art.
  • a basic structure of a radio frame is as shown in FIG. 1 , and includes two parts: a physical layer preamble and a data part.
  • the physical layer preamble includes preambles compatible with legacy devices as well as short training domains, long training domains, signaling domains, and the like.
  • IEEE 802.11 defines a medium access control (MAC) and a physical layer (Physical Layer, PHY for short). Two basic modes of operation are defined: Distributed Coordination Function (DCF) and Point Coordination Function (PCF).
  • DCF Distributed Coordination Function
  • PCF Point Coordination Function
  • Interframe Space In an OFDM system of a WLAN, an interval between a frame and a frame is called an Interframe Space (IFS).
  • IFS Interframe Space
  • SIFS short IFS
  • PCF IFS PIFS
  • DIFS DIFS
  • the site access channel In the WLAN network, the site access channel generally adopts a freely competitive manner.
  • the frame exchange In order to ensure the reliability of the transmission, the frame exchange generally used is a specific interframe space (SIFS) after the receiver receives the data of the target site. After that, an acknowledgement message (Acknowledgement) is sent.
  • the IEEE 802.11 protocol introduces an aggregate frame operation. After receiving the aggregated frame, the receiver sends a acknowledgement message (Block Acknowledgement) after a specific interframe space (SIFS).
  • the Block Acknowledgement includes an address for transmitting the aggregated frame, a Starting Sequence Number, a Traffic ID (TID), and a Bit Ack Bitmap indicating the receiving status.
  • Each of the bits is used to indicate the reception status of the corresponding subframe in the received aggregated frame. If the bit is set to 1, it indicates that the corresponding subframe is correctly received. If it is set to 0, it indicates that the corresponding subframe is not correctly received. It should be noted that Acknowledgement or Block Acknowledgement can be collectively referred to as an acknowledgement message.
  • the MAC layer receiving process judging process verifying the MPDU (medium access control (MAC) protocol data unit) transmitted by the PHY layer to determine whether it is correct, and if correct, making necessary for the MAC frame header After processing, it is judged that it is the target receiving address, and the MSDU (medium access control (MAC) service data unit) is obtained from the MPDU and transmitted to the upper layer.
  • MPDU medium access control
  • MSDU medium access control
  • the basic architecture of a WLAN refers to a basic service set (BSS), which includes an access point (AP) and a plurality of stations (Stations, STAs) associated with the AP. If the two BSS work areas overlap, the working frequency bands are the same or overlapped as an Overlapping Basic Service Set (OBSS).
  • FIG. 2 is a schematic diagram of a WLAN basic service set BSS in the related art, as shown in FIG.
  • the BSS affiliation information can be distinguished.
  • the BSS Ownership Information includes a BSSID (Basic Service Set Identifier), which is usually the same as the MAC address of the AP.
  • the frame header of the MAC layer carries; there is also the BSS color, which is usually indicated by the frame header of the physical layer.
  • FIG. 3 is a schematic diagram of performance degradation caused by collisions between OBSSs in the related art.
  • STA1 and AP1 form one BSS
  • STA2 and AP2 form one BSS
  • STA3 and AP3 form one BSS.
  • STA1 contending channel in the OBSS environment sends data to AP1
  • STA3 and STA1 are hidden terminals, that is, STA3 considers the channel idle, and the contention channel sends data to AP3.
  • the data sent by STA3 interferes with AP1.
  • the reception of STA1 causes the network throughput to drop.
  • LTE there is a technology of Coordinated Multiple Points (Comp), in which multiple base stations form a CoMP cooperating set or a multi-point cooperative set, and multiple points are received. Data from the UE. Due to the large interval between data and acknowledgment in LTE, enough coordinated groups perform forwarding processing. However, in WLAN systems, the interval between data and acknowledgment messages is very short (usually 16us for OFDM systems), and it is too late to process with this comp technique.
  • Comp Coordinated Multiple Points
  • the embodiment of the invention provides a method and a device for cooperative transmission in a wireless local area network, so as to at least solve the problem that the data transmission between the OBSSs in the related art is affected by the data transmission between the stations.
  • a method for cooperative transmission in a wireless local area network includes: receiving, by a first access point, first data from a station, where the first data carries Point information of the collaboration function, the site belongs to the same basic service set as the first access point; the first access point receives second data forwarded by the second access point, where the second access The point belongs to the same multi-point cooperation group as the first access point, and the second data is from a basic service set to which the first access point belongs; the first access point pairs the first data and The second data is judged, and a confirmation message for indicating that the first data is correctly received is sent to the station according to the determination result.
  • the first access point determines, by the first access point, the first data and the second data, and sends, according to the determination result, a confirmation message that is sent to the station to indicate that the first data is correctly received, including
  • the first access point separately determines the first data and the second data; when the determination result is that the first data or the second data is correctly received, the first access point Sending, by the station, an acknowledgement message; when the result of the determination is that the first data and the second data are not correctly received, the first access point combines the first data and the second data And determining whether the data after the merge is correct; when the judgment result is correct reception, the first access point sends an acknowledgement message to the station.
  • the first data further carries a multi-point coordinated operation mode, where the operation manner includes:
  • the information combining mode is used to indicate that the multi-point cooperative group receives the first data processing manner from the other wireless access points except the first access point.
  • the merging of the information includes one of: forwarding a medium access control protocol data unit, forwarding the received medium access control protocol service unit, forwarding a received medium access control protocol service unit, receiving a status parameter, and then forwarding the received The medium access control protocol service unit forwards the received state parameter of the received medium access control protocol service unit and then forwards the received medium access control protocol data unit.
  • the receiving, by the first access point, the second data that is forwarded by the second access point includes: receiving, by the first access point The medium access control protocol data unit carried by the second access point and carried by the second access point; when the information combining manner is to forward the received medium access control protocol data unit, the first access point receiving station
  • the second data forwarded by the second access point includes: the first access point receiving, by the second access point, a media access control service unit that is correctly verified by the second data;
  • the merging mode is to forward the received medium access control protocol service unit to the received medium access control protocol service unit
  • the first access point receives the second data sent by the second access point, including The first access point receives the second access point forwarding receiving state parameter; the first access point receives the media access that is forwarded by the second access point and is verified by the second data.
  • the first access point receives the second access
  • the second data sent by the ingress includes: the first access point receives the second access point forwarding state parameter; and the first access point receives the second access point forwarded by the second access point. Verify the correct media access control data unit.
  • the receiving status parameter includes: a medium access control address, a starting sequence number, a service identifier, and a receiving status bitmap for sending the second data.
  • the operating manner further includes: an interframe space, where the interframe space is a time interval between an acknowledgement message sent by the first access point and the first data being sent.
  • the first data further carries multi-point coordinated response information, where the response information at least includes: an access point identifier; the access point identifier is the wireless sent to the site The access point identifier for which the frame is acknowledged.
  • the method further includes: when the first access point is included in the access point identifier, the first access point sends an acknowledgement message in a frequency band resource sent by the first data.
  • the response information further includes: an acknowledgement message duration, a frequency band resource, or a space-time flow resource, where the acknowledgement message duration is a duration of an acknowledgement of the radio frame sent by the station; A band resource or a space-time stream resource that is occupied by the band resource or the space-time stream resource when the radio frame sent by the station is acknowledged.
  • the first access point when the identifier of the first access point and the second access point is included in the identifier of the first access point, the first access point is in a frequency band resource or space-time flow corresponding to the identifier. And a acknowledgment message of the acknowledgment message, wherein the duration of the acknowledgment message satisfies the requirement of the acknowledgment message duration carried in the first data; the second access point is in the frequency band resource corresponding to the identifier or The current flow sends a confirmation message of the response, and the duration of the confirmation information satisfies the first number According to the request for the length of the confirmation message carried in the data.
  • the access point in the coordinated multi-point group saves a basic service set attribution identifier of other access points in the coordinated multi-point cooperation group.
  • the first data further carries a basic service set attribution identifier.
  • the method further includes: the first access point notifying the station of a multi-point cooperative operation mode supported by the first access point .
  • a method for cooperative transmission in a wireless local area network includes: receiving, by a second access point, first data from a station, where the first data is carried in an indication to enable The information of the multi-point cooperation function, the first data is from a basic service set to which the first access point belongs to the same cooperation group as the second access point, and the second access point is to the first access The point forwards the first data.
  • the first data further carries a multi-point coordinated operation mode, where the operation mode includes: an information combining mode; and the information combining mode is used to indicate the multi-point cooperation group except the first connection Other wireless access points other than the ingress point receive the processing of the first data.
  • the operation mode includes: an information combining mode; and the information combining mode is used to indicate the multi-point cooperation group except the first connection Other wireless access points other than the ingress point receive the processing of the first data.
  • the merging of the information includes one of: forwarding a medium access control protocol data unit, forwarding the received medium access control protocol service unit, forwarding the received state parameter of the received medium access control protocol service unit, and then forwarding the received The medium access control protocol service unit forwards the received state parameter of the received medium access control protocol service unit and then forwards the received medium access control protocol data unit.
  • the sending, by the second access point, the second data to the first access point includes: the second access point Transmitting, by the first access point, a medium access control protocol data unit carried in the second data; when the information combining manner is to forward the received medium access control protocol data unit, the second access point is to the
  • the sending, by the second access point, the second data includes: sending, by the second access point, the correct media access control service unit that is carried in the second data to the first access point;
  • the second access point sends the second data to the first access point, where the second access point sends the second data to the first access point, the second access point includes: the second Receiving, by the access point, a reception status parameter to the first access point; the second access point transmitting, to the first access point, a media access control service unit that is correctly verified by the second data;
  • sending, by the second access point, the second data to the first access point when the second access point sends the second data to the first access point,
  • the receiving status parameter includes a medium access control address, a starting sequence number, a service identifier, and a receiving status bitmap for sending the second data.
  • the operating mode further includes: an inter-frame interval; and the second access point needs to send the second data to the first access point before the inter-frame interval corresponding time.
  • the first data further carries multi-point coordinated response information, where the response information includes: an access point identifier; and the access point identifier is the first sent to the site The access point identifier for which the data is confirmed.
  • the method further includes: when the identifier of the second access point is included in the identifier of the access point, the second access point sends a confirmation message to a frequency band resource sent by the first data point. .
  • the response information further includes an acknowledgement message duration, a frequency band resource, or a space-time flow resource, where the acknowledgement message duration is a duration of an acknowledgement of the first data sent by the site;
  • the second access point when the identifier of the second access point is included in the response information, the second access point sends a response confirmation message in a frequency band resource or a space-time stream corresponding to the identifier, where the acknowledgement The duration of the information meets the requirement of the duration of the confirmation message carried in the first data.
  • a method for cooperative transmission in a wireless local area network includes: sending, by a station, first data to a first access point, where the first data carries Point information of the collaboration function, the site belonging to the same basic service set as the first access point.
  • the first data further carries a multi-point coordinated operation mode, where the operation mode includes: an information combining mode; and the information combining mode is used to indicate the multi-point cooperation group except the first connection Other wireless access points other than the ingress point receive the processing of the first data.
  • the operation mode includes: an information combining mode; and the information combining mode is used to indicate the multi-point cooperation group except the first connection Other wireless access points other than the ingress point receive the processing of the first data.
  • the merging of the information includes one of: forwarding a medium access control protocol data unit, forwarding the received medium access control protocol service unit, forwarding a received medium access control protocol service unit, receiving a status parameter, and then forwarding the received The medium access control protocol service unit forwards the received state parameter of the received medium access control protocol service unit and then forwards the received medium access control protocol data unit.
  • the first data further carries multi-point coordinated response information, where the response information includes: an access point identifier; and the access point identifier is the first sent to the site The access point identifier for which the data is confirmed.
  • the response information further includes: an acknowledgement message duration, a frequency band resource, or a space-time flow resource, where the acknowledgement message duration is a duration of confirmation of the first data sent by the site;
  • the frequency band resource or the space-time stream resource that is occupied by the bandwidth resource or the space-time stream resource when the first data sent by the station is confirmed.
  • a device for cooperative transmission in a wireless local area network which is applied to a first access point side, and includes: a first receiving module, configured to receive first data from a site, where The first data carries information for indicating that the multi-point cooperation function is turned on, the station belongs to the same basic service set as the first access point, and the second receiving module is configured to receive the second access point for forwarding.
  • the second data wherein the second access point and the first access point belong to the same multi-point cooperation group, and the second data is from a basic service set to which the first access point belongs; And determining to determine the first data and the second data, and sending, according to the determination result, a confirmation message for indicating that the first data is correctly received to the station.
  • a device for cooperative transmission in a wireless local area network which is applied to The second access point includes: a third receiving module, configured to receive the first data from the site, where the first data carries information for indicating that the multipoint cooperation function is turned on, the first data is from a basic service set to which the first access point belongs to the same collaboration group as the second access point; and the first sending module is configured to forward the first data to the first access point.
  • a device for cooperative transmission in a wireless local area network which is applied to a site side, and includes: a second sending module, configured to send first data to a first access point, where The first data carries information indicating that the multipoint cooperation function is turned on, and the site belongs to the same basic service set as the first access point.
  • a storage medium is also provided.
  • the storage medium is arranged to store program code for performing the following steps:
  • the site belongs to the same basic service set as the first access point; and receives the second access Point forwarding second data, wherein the second access point belongs to the same multi-point cooperation group as the first access point, and the second data is from a basic service set to which the first access point belongs Determining the first data and the second data, and sending a confirmation message indicating that the first data is correctly received to the station according to the determination result.
  • the storage medium is further arranged to store program code for performing the following steps:
  • the first access point Determining the first data and the second data separately; when the judgment result is that the first data or the second data is correctly received, the first access point sends an acknowledgement message to the station; If the result of the determination is that the first data and the second data are not correctly received, the first data and the second data are combined to determine whether the merged data is correct; the judgment result is correct. Upon receiving, the first access point sends an acknowledgement message to the station.
  • a storage medium is also provided.
  • the storage medium is arranged to store program code for performing the following steps:
  • the first data is from the first group belonging to the same collaboration group as the second access point a basic service set to which the access point belongs; forwarding the first data to the first access point.
  • the first access point receives the first data from the site, where the first data carries information for indicating that the multipoint cooperation function is enabled, and further, the site and the first access point
  • the second access point belongs to the same basic service set; the first access point receives the second data forwarded by the second access point, where the second access point belongs to the same multi-point cooperation group as the first access point, and the second data comes from a site of the basic service set to which the first access point belongs, and then determining the first data and the second data, and sending a confirmation message indicating that the first data is correctly received to the site according to the judgment result, visible even if the site In the OBSS interval, the data can still be accurately sent to the access point belonging to a basic service set of the site, and is not affected by other access points, thereby solving the data between the OBSSs in the related art.
  • the problem of transmitting mutual influence has the effect of improving the correctness of data transmission.
  • FIG. 1 is a schematic diagram of a basic structure of a radio frame in the related art
  • FIG. 2 is a schematic diagram of a WLAN basic service set BSS in the related art
  • FIG. 3 is a schematic diagram showing performance degradation caused by collisions between OBSSs in the related art
  • FIG. 4 is a flowchart of a method for cooperative transmission of a wireless local area network according to an embodiment of the present invention
  • FIG. 5 is a second flowchart of a method for cooperative transmission in a wireless local area network according to an embodiment of the present invention
  • FIG. 6 is a third flowchart of a method for cooperative transmission in a wireless local area network according to an embodiment of the present invention.
  • FIG. 7 is a block diagram 1 of a device structure for cooperative transmission in a wireless local area network according to an embodiment of the present invention
  • FIG. 8 is a second structural block diagram of a device for cooperative transmission in a wireless local area network according to an embodiment of the present invention.
  • FIG. 9 is a third structural block diagram of a device for cooperative transmission in a wireless local area network according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of multi-point cooperation of multiple BSSs according to an alternative embodiment of the present invention.
  • FIG. 11 is a schematic diagram of a merge mode as a forwarding medium access control protocol data unit according to an alternative embodiment of the present invention.
  • FIG. 12 is a schematic diagram of a merge mode for forwarding a received medium access control protocol service unit according to an alternative embodiment of the present invention
  • FIG. 13 is a schematic diagram of a media access control protocol service unit that retransmits a received state parameter of a received medium access control protocol service unit according to an alternative embodiment of the present invention
  • FIG. 14 is a schematic diagram of a media access control protocol data unit for forwarding a received state parameter of a received medium access control protocol service unit according to an alternative embodiment of the present invention
  • FIG. 15 is a schematic diagram of a site assisting AP for multi-point collaborative group establishment according to an alternative embodiment of the present invention.
  • FIG. 16 is a first schematic diagram of site indication response information according to an alternative embodiment of the present invention.
  • FIG. 17 is a second schematic diagram of site indication response information in accordance with an alternate embodiment of the present invention.
  • FIG. 4 is a method according to an embodiment of the present invention.
  • Step S402 The first access point receives the first data from the site, where the first data carries information indicating that the multi-point collaboration function is enabled, and the site belongs to the same basic service set as the first access point;
  • Step S404 The first access point receives the second data forwarded by the second access point, where the second access point belongs to the same multi-point cooperation group as the first access point, and the second data is from the first access point.
  • Step S406 The first access point determines the first data and the second data, and sends a confirmation message for indicating that the first data is correctly received to the station according to the determination result.
  • the first access point receives the first data from the site, where the first data carries information for indicating that the multi-point collaboration function is enabled, and further, the site and the The first access point belongs to the same basic service set; and the first access point receives the second data forwarded by the second access point, where the second access point and the first access point belong to the same multi-point cooperation
  • the second data is from the site of the basic service set to which the first access point belongs, and then the first data and the second data are judged, and the confirmation that the first data is correctly received is sent to the site according to the determination result.
  • the message shows that even if the station is in the OBSS interval, the data can be accurately sent to the access point that belongs to the same service set as the site, and is not affected by other access points, thus solving the OBSS between related technologies. Due to the mutual influence of data transmission between sites, the effect of improving the correctness of data transmission is achieved.
  • the first data and the second data involved in step S406 in the embodiment are determined, and the first data is correctly sent to the station according to the determination result. And/or the manner of confirming the message of the second data may be implemented by:
  • Step S406-1 the first access point separately determines the first data and the second data
  • Step S406-2 When the result of the determination is that the first data or the second data is correctly received, the first access point sends an acknowledgement message to the station; when the judgment result is that the first data and the second data are not correctly received, the first An access point combines the first data and the second data to determine whether the merged data is correct. When the judgment result is correct reception, the first access point sends an acknowledgement message to the station.
  • the first data involved in the embodiment further carries a multi-point coordinated operation mode, where the operation mode includes: information merge mode; information merge The mode is used to indicate a manner in which the multi-point cooperative group receives the first data by the other wireless access points except the first access point.
  • the information combination includes one of the following: forwarding a medium access control protocol data unit, forwarding the received medium access control protocol service unit, forwarding a received medium access control protocol service unit receiving status parameter, and then forwarding the received medium access control.
  • the protocol service unit forwards the received media status control protocol data unit to the received media access control protocol data unit.
  • the first access point corresponding to the second access point is forwarded by the second access point.
  • Manner 1 When the information combining mode is the forwarding medium access control protocol data unit, the first access point receives the second connection
  • the second data forwarded by the ingress includes: the first access point receives the medium access control protocol data unit that is sent by the second access point and is carried by the second data;
  • Manner 2 When the information combining mode is to forward the received medium access control protocol data unit, the first access point receives the second data forwarded by the second access point, where the first access point receives the second access point and sends the second access point. Verifying the correct media access control service unit carried by the second data;
  • the first access point receives the second data sent by the second access point when the information combining mode is to forward the received medium access control protocol service unit to the receiving state of the received medium access control protocol service unit.
  • the method includes: the first access point receives the second access point forwarding the receiving state parameter; the first access point receives the medium access control service unit that is forwarded by the second access point and is correctly verified by the second data;
  • the first access point receives the second data sent by the second access point when the information combining mode is to forward the received medium access control protocol data unit to the receiving state of the received medium access control protocol service unit.
  • the method includes: receiving, by the first access point, the second access point to forward the receiving state parameter; and receiving, by the first access point, the medium access control data unit that is forwarded by the second access point and is correctly verified by the second data.
  • receiving status parameters include: a medium access control address, a starting sequence number, a service identifier, and a receiving status bitmap for transmitting the second data.
  • the operation manner further includes: an interframe interval, where the interframe interval is a time interval between the acknowledgement message sent by the first access point and the first data sent.
  • the first data further includes multi-point coordinated response information, where the response information includes at least: an access point identifier; and the access point identifier is a radio frame sent to the station.
  • the access point ID for confirmation. Based on this, when the first access point is included in the access point identifier, the first access point sends an acknowledgement message in the frequency band of the first data transmission.
  • the response information involved in this embodiment further includes: an acknowledgement message duration, a frequency band resource, or a space-time flow resource, wherein the acknowledgement message duration is a duration of confirmation of the radio frame sent by the station; the frequency band resource or the space time
  • the stream resource is a band resource or a space-time stream resource that needs to be occupied when the radio frame sent by the station is confirmed.
  • the first access point when the identifier of the first access point and the second access point is included in the response site identifier, the first access point sends a response to identify the corresponding frequency band resource or space-time stream transmission response. a message, wherein the acknowledgment message duration satisfies the requirement of the acknowledgment message duration carried in the first data; and the second access point sends the acknowledgment information of the response in the corresponding frequency band resource or the space time stream, and the acknowledgment information duration duration satisfies the first The length of the confirmation message carried in the data. .
  • the access point in the multi-point collaboration group saves the basic service set attribution identifier of other access points in the multi-point collaboration group. That is to say, in the multi-point collaboration group, each access point saves the basic service set attribution identifier of other access points in the multi-point collaboration in addition to its own basic service set attribution identifier.
  • the first data related to the embodiment may further carry a basic service set attribution identifier.
  • the method of this embodiment is performed before the first access point receives the first data in step S402 of the embodiment.
  • the method may further include: the first access point notifying the station of the coordinated operation mode supported by the first access point.
  • FIG. 5 is a second flowchart of a method for cooperative transmission in a wireless local area network according to an embodiment of the present invention. As shown in FIG. 5, the steps of the method include:
  • Step S502 The second access point receives the first data from the site, where the first data carries information indicating that the multi-point collaboration function is started, where the first data belongs to the same collaboration group as the second access point.
  • Step S504 The second access point forwards the first data to the first access point.
  • the first data in this embodiment also carries a multi-point coordinated operation mode, where the operation mode includes: an information combining mode, and the information combining mode is used to indicate the multi-point cooperation group except the first access point.
  • the operation mode includes: an information combining mode
  • the information combining mode is used to indicate the multi-point cooperation group except the first access point.
  • Other wireless access points than others receive the processing of the first data.
  • the information combination includes one of the following: forwarding a medium access control protocol data unit, forwarding the received medium access control protocol service unit, forwarding the received medium state of the received medium access control protocol service unit, and forwarding the received medium access control.
  • the protocol service unit forwards the received state parameter of the received medium access control protocol service unit and forwards the received medium access control protocol data unit.
  • the first access point corresponding to the second access point is forwarded by the second access point.
  • Manner 1 The first access point receives the second data forwarded by the second access point when the information combining mode is the forwarding medium access control protocol data unit, where the first access point receives the bearer sent by the second access point. a medium access control protocol data unit of the second data;
  • Manner 2 When the information combining mode is to forward the received medium access control protocol data unit, the first access point receives the second data forwarded by the second access point, where the first access point receives the second access point and sends the second access point. Verifying the correct media access control service unit carried by the second data;
  • the first access point receives the second data sent by the second access point when the information combining mode is to forward the received medium access control protocol service unit to the receiving state of the received medium access control protocol service unit.
  • the method includes: the first access point receives the second access point forwarding the receiving state parameter; the first access point receives the medium access control service unit that is forwarded by the second access point and is correctly verified by the second data;
  • the first access point receives the second data sent by the second access point when the information combining mode is to forward the received medium access control protocol data unit to the receiving state of the received medium access control protocol service unit.
  • the method includes: receiving, by the first access point, the second access point to forward the receiving state parameter; and receiving, by the first access point, the medium access control data unit that is forwarded by the second access point and is correctly verified by the second data.
  • the operation mode involved in this embodiment further includes: an inter-frame interval, where the inter-frame interval is a time interval between the acknowledgement message sent by the first access point and the first data, and the second access point needs the frame.
  • the second interval is sent to the first access point before the time interval.
  • the first data in this embodiment further carries the coordinated information of the multipoint cooperation, where the response information includes: an access point identifier; and the access point identifier is an access point that confirms the first data sent by the station. logo.
  • the method in this embodiment may further include: when the identifier of the second access point is included in the access point identifier, the second access point sends an acknowledgement message in the frequency band of the first data transmission.
  • the response information further includes an acknowledgement message duration, a frequency band resource, or a space-time flow resource, where the acknowledgement message duration is a duration of confirmation of the first data sent by the station; the frequency band resource Or the space-time resource or the space-time stream resource that the space-time stream resource needs to occupy when confirming the first data sent by the station.
  • the second access point when the identifier of the second access point is included in the response information, the second access point sends a response confirmation message to identify the corresponding frequency band resource or the space time stream, and confirms that the information duration duration satisfies the acknowledgement carried in the first data. The length of the message.
  • FIG. 6 is a third flowchart of a method for cooperative transmission in a wireless local area network according to an embodiment of the present invention. As shown in FIG. 6, the steps of the method include:
  • Step S602 The station sends the first data to the first access point, where the first data carries information indicating that the multi-point collaboration function is enabled, and the site belongs to the same basic service set as the first access point.
  • the first data further carries a multi-point coordinated operation mode, where the operation mode includes: an information combining mode; and the information combining mode is used to indicate the multi-point cooperation group except the first connection.
  • the operation mode includes: an information combining mode; and the information combining mode is used to indicate the multi-point cooperation group except the first connection.
  • Other wireless access points other than the ingress point receive the processing of the first data.
  • the information combination includes one of the following: forwarding a medium access control protocol data unit, forwarding the received medium access control protocol service unit, forwarding a received medium access control protocol service unit receiving status parameter, and then forwarding the received medium access control.
  • the protocol service unit forwards the received media status control protocol data unit to the received media access control protocol data unit.
  • the first data further includes multi-point coordinated response information, where the response information includes: an access point identifier; and the access point identifier is an access point identifier that confirms the first data sent by the station.
  • the response information further includes: an acknowledgement message duration, a frequency band resource, or a space-time flow resource, where the acknowledgement message duration is a duration of confirmation of the first data sent by the station; the frequency band resource Or the space-time resource or the space-time stream resource that the space-time stream resource needs to occupy when confirming the first data sent by the station.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods of various embodiments of the present invention.
  • a device for cooperative transmission of a wireless local area network is further provided, which is used to implement the foregoing embodiments and preferred embodiments, and details are not described herein.
  • the term "module" can be implemented to be predetermined A combination of functional software and/or hardware.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 7 is a block diagram of a device structure for cooperative transmission in a wireless local area network according to an embodiment of the present invention.
  • the device is applied to a first access point side.
  • the device includes: a first receiving module 72 configured to receive The first data from the site, where the first data carries information for indicating that the multipoint cooperation function is enabled, the site belongs to the same basic service set as the first access point, and the second receiving module 74 and the first receiving module 72 a coupling connection, configured to receive the second data forwarded by the second access point, where the second access point belongs to the same multi-point cooperation group as the first access point, and the second data is from the basic part of the first access point
  • the service module 76 is coupled to the second receiving module 74 and configured to determine the first data and the second data, and send a confirmation message indicating that the first data is correctly received to the station according to the determination result.
  • FIG. 8 is a block diagram of a device structure for cooperative transmission in a wireless local area network according to an embodiment of the present invention.
  • the device is applied to a second access point side.
  • the device includes: a third receiving module 82 configured to receive The first data from the site, where the first data carries information for indicating that the multi-point cooperation function is started, and the first data is from a basic service to which the first access point belongs to the same collaboration group as the second access point.
  • the first sending module 84 is coupled to the third receiving module 82 and configured to forward the first data to the first access point.
  • FIG. 9 is a third structural block diagram of a device for cooperative transmission in a wireless local area network according to an embodiment of the present invention.
  • the device is applied to a site side.
  • the device includes: a second sending module 92, configured to be the first access
  • the point sends the first data, where the first data carries information indicating that the multipoint cooperation function is enabled, and the station belongs to the same basic service set as the first access point.
  • the APs of the two BSSs are AP1 and AP2, respectively.
  • STA1 and AP1 belong to the same BSS
  • STA2 and AP2 belong to the same BSS.
  • AP1 and AP2 establish a multi-point collaboration group.
  • the marking of the multi-point collaboration group can be distinguished by saving the basic service set attribution identifier or generating the basic collaboration group identifier.
  • AP1 and AP2 save and form the basic service set attribution ID of the basic service set.
  • the communication protocol negotiated by AP1 and AP2 is not limited to the wireless local area network technology, and the establishment of a multi-point collaboration group can be performed by other wireless technologies or wired technologies.
  • the establishment of the multi-point cooperation group is not limited to the case of only two BSSs, and the number of the wireless access points constituting the multi-point cooperation group may be any.
  • AP1 and AP2 know each other whether there is an overlapping area.
  • channel scanning by AP1 and AP2 itself it can also be reported by the associated station. For example, STA1 performs channel scanning and reports the surrounding BSS. At this time, STA1 can The information about AP2 is reported to AP1.
  • the AP1 and the AP2 know each other whether there is an overlapping area. You can also notify the upper-layer NEs, for example, the NEs that manage AP1 and AP2.
  • the initiation of the multi-point collaboration group establishment may be any one of the APs, or may be initiated by the network element that manages the APs.
  • STA1 and AP1 perform capability negotiation on multipoint coordination.
  • STA1 knows the merge mode and response mode supported by AP1. Or notify by broadcast (beacon, beacon).
  • STA1 can determine whether to enable multi-point collaboration function according to network conditions (such as the success rate of previous data transmission) or the length of the current radio frame, and optionally carry multi-point cooperative operation mode information.
  • SIFS short interframe space
  • AP2 correctly receives the preamble that STA1 sends data.
  • STA1 starts the multipoint coordination function
  • AP2 forwards the received data to AP1.
  • AP2 can also forward the correct data to AP1.
  • AP2 receives the data from the BSS where AP5 is located, and finds that its preamble is on.
  • the multi-point collaboration function, and the BSS color carried by the data frame is 5, and the AP2 forwards the received data to the AP1.
  • the AP1 can determine the data sent by the site in the BSS through the MAC address and other information, and discard it. If the data forwarded by AP2 is wrong, merging will not bring about worse
  • AP1 judges the data forwarded by AP2. If it can judge the right or wrong separately, it will judge independently. If the judgment is wrong, it can be combined with the signal received by AP1 to judge the right or wrong. AP1 cannot receive both signals correctly, but the combined signal may be received correctly.
  • AP1 can receive correctly, it sends an acknowledgment message according to the acknowledgment mode in the radio frame sent by STA1. If AP1 processes the data forwarded by AP2 in the SIFS and judges that the data is correct, it sends an acknowledgement frame to STA1. If an aggregated frame (A-MPDU) is used, AP1 can perform a confirmation message as long as one subframe is correct.
  • A-MPDU aggregated frame
  • FIG. 10 is a schematic diagram of multi-point cooperation of multiple BSSs according to an alternative embodiment of the present invention.
  • STA1 and AP1 belong to the same BSS.
  • AP1 successfully receives the physical layer preamble (Preamble) of STA1.
  • the interpreting out of the site enables the multipoint coordination function.
  • AP1 knows that the subsequent data is sent to itself. Then, if AP1 can correctly receive the subsequent data part, AP1 does not need to wait for data forwarded by other APs. If AP1 cannot correctly receive the subsequent data part, it waits for other forwarded data within a certain time, and the specific time depends on the processing of AP1. ability.
  • AP2 and AP4 correctly receive the preamble that STA1 sends data.
  • STA1 starts the multipoint cooperation function
  • AP2 and AP4 forward the received data to AP1.
  • AP2 If AP2 is in the receiving state or does not correctly receive the preamble sent by STA1, AP2 cannot forward to AP1.
  • AP1 judges the data forwarded by AP2 and AP4. If it can judge the right or wrong separately, it will judge independently. If the judgment is wrong, it can be combined with the signal received by AP1 to judge the right or wrong. AP1 cannot receive multiple signals correctly, but the combined signals may be received correctly.
  • AP1 If AP1 can receive correctly, it sends an acknowledgment message according to the acknowledgment mode in the radio frame sent by STA1.
  • AP1 and AP2 establishes a multi-point collaboration group, and AP1 sends a basic service set identifier (such as BSS color) to AP2 and AP4, as shown in FIG.
  • a basic service set identifier such as BSS color
  • STA1 and AP1 perform capability negotiation on multipoint coordination.
  • STA1 knows the merge mode and response mode supported by AP1. Or notify by broadcast (beacon, beacon).
  • STA1 and AP1 belong to the same BSS.
  • STA1 indicates that the multipoint cooperation function is enabled in the transmitted radio frame, and indicates the information combination mode.
  • the information combination mode includes the original signal forwarding, and the receiving AP only forwards the correct signal, and the receiving AP receives the first signal.
  • the supported information combining manner is not limited to the above description, and other information combining methods may also be indicated.
  • the information combining mode can jointly indicate the supported merged state by a few bits in the physical layer preamble. As shown in Table 1, 2 bits are used to indicate the supported merge mode. Wherein, if the indication is 00, the forwarding medium access control protocol data unit is indicated; if the indication is 01, the received medium access control protocol service unit is forwarded; if the indication is 10, the receiving state parameter of the received medium access control protocol service unit is forwarded. Forward the received Media Access Control Protocol service unit. Table 1 only lists the case of two bit indications, and if there are more merge modes, more bits can be used for indication.
  • AP1 successfully receives the physical layer preamble (Preamble) of STA1, and resolves that the site has enabled the multipoint collaboration function. AP1 knows that the subsequent data is sent to itself through the BSS color carried in the physical layer preamble.
  • Preamble physical layer preamble
  • FIG. 11 is a schematic diagram of a merge mode as a forwarding medium access control protocol data unit according to an alternative embodiment of the present invention, as shown in FIG.
  • AP1 does not need to wait for data forwarded by other APs. If AP1 cannot correctly receive the subsequent data part, it waits for AP2 at a specific time (the default SIFS or the physical layer frame header indicates a new interframe space). And the data forwarded by AP4, the specific time depends on the processing capability of AP1.
  • AP2 and AP4 correctly receive the preamble that STA1 sends data, and find that STA1 initiates the multipoint coordination function and indicates that the medium access control protocol data unit is forwarded. AP2 and AP4 forward the received MPDU to AP1.
  • AP1 judges the data forwarded by AP2 and AP4. If it can judge the right or wrong separately, it will judge independently. If the judgment is wrong, it can be combined with the signal received by AP1 to judge the right or wrong. AP1 cannot receive both signals correctly, but the combined signal may be received correctly.
  • FIG. 12 is a schematic diagram of a merge mode for forwarding a received medium access control protocol service unit according to an alternative embodiment of the present invention.
  • STA1 sends an aggregated packet (A-MPDU), which includes four subframes (subframe 1, Subframe 2, subframe 3, subframe 4), each subframe contains one MSDU, and four subframes correspond to MSDU 1, MSDU 2, MSDU 3, MSDU 4.
  • A-MPDU aggregated packet
  • each subframe contains one MSDU
  • four subframes correspond to MSDU 1, MSDU 2, MSDU 3, MSDU 4.
  • AP1 successfully received subframe 1 and subframe 3.
  • AP2 successfully received MSDU 1 and MSDU 4.
  • AP4 successfully received MSDU 1, MSDU 2, and MSDU 3.
  • AP2 forwards the correct MSDU 1 and MSDU 4 to AP1, and AP4 will receive the correct MSDU 1, MSDU 2, and MSDU 3 to AP1.
  • AP1 responds by generating an acknowledgment frame based on the correct data forwarding of all APs. At this time, AP1 can judge that all the data it receives is correct, and it will send to AP1 an acknowledgment message that all subframes are correct.
  • FIG. 13 is according to the present
  • the merge mode of the alternative embodiment of the invention is to forward the received media access
  • the receiving state parameter of the control protocol service unit is further forwarded to the received medium access control protocol service unit. As shown in FIG. 13, the corresponding subframe number is identified under the state diagram sent by AP2 and AP4 to AP1.
  • STA1 sends an aggregated packet (A-MPDU) containing four subframes (subframe 1, subframe 2, subframe 3, subframe 4), and each subframe contains one MSDU or A-MSDU.
  • the four subframes correspond to MSDU 1, MSDU 2, MSDU 3, and MSDU 4.
  • AP1 successfully received MSDU 1 and MSDU 3.
  • AP2 successfully received MSDU 1 and MSDU 4.
  • AP4 successfully received MSDU 1, MSDU 2 and MSDU 3.
  • AP2 and AP4 first send the correct erroneous reception status feedback (including the necessary difference information, the MAC address of the station, the starting sequence number of the status bitmap, and the service identifier) of the received subframe to AP1, at a later time, AP2 and AP4 forward the correct medium access control protocol service unit to AP1, AP2 sends MSDU1 and MSDU 4, and AP4 sends MSDU1 and MSDU 2, MSDU 3. At this time, it is necessary to distinguish the necessary identifiers, addresses, serial numbers, etc. of these data sources.
  • the AP1 generates an acknowledgement frame according to the union of the status bitmaps forwarded by all APs. The acknowledgement message is only indicated in the acknowledgement message in FIG.
  • AP1 itself does not successfully receive all the subframes, it can be judged that all subframes are correctly received through the information forwarded by AP2 and AP4. If AP2 and AP4 do not receive any MSDU, no state forwarding and MSDU forwarding are performed.
  • FIG. 14 is according to the present invention
  • the merging manner of the optional embodiment of the present invention is to forward the received medium access control protocol data unit of the received medium access control protocol service unit and then forward the received medium access control protocol data unit.
  • the AP2 and the AP4 send the AP1 to the AP1.
  • the corresponding subframe number is identified below the state diagram.
  • STA1 sends an aggregated packet (A-MPDU) containing four subframes (subframe 1, subframe 2, subframe 3, subframe 4), and each subframe contains one MPDU.
  • the four subframes correspond to MPDU 1, MPDU 2, MPDU 3, and MPDU 4.
  • AP1 successfully received MPDU 1 and MPDU 3.
  • AP2 successfully received MPDU 1 and MPDU 4.
  • AP4 successfully received MPDU 1, MPDU 2 and MPDU 3.
  • AP2 and AP4 first send the correct erroneous reception status feedback (including the necessary difference information, the MAC address of the station, the starting sequence number of the status bitmap, and the service identifier) of the received subframe to AP1, at a later time, AP2 and AP4 forward the correct media access control protocol data unit to AP1, AP2 sends MPDU1 and MPDU 4, and AP4 sends MPDU1 and MPDU 2, MPDU 3. At this time, it is not necessary to distinguish the necessary identifiers, addresses, serial numbers, etc. of these data sources (the MAC frame header of the MPDU contains such information). The AP1 responds by generating an acknowledgement frame according to the union of the state bitmaps forwarded by all APs.
  • the acknowledgement message in Figure 14 only indicates the information of the Block Ack Bitmap, and other information is set in the Block ack.
  • AP1 is not successful. All sub-frames are received, but through the information forwarded by AP2 and AP4, AP1 can judge that it has successfully received all the sub-frames.
  • the inter-frame spacing is also included in the multi-point cooperative operation mode, which refers to the inter-frame interval at which the receiving station sends an acknowledgment message.
  • AP1 responds with this indication. If the interframe space is carried in the radio frame, AP2 and AP4 forward the information to AP1 in the interframe interval. Otherwise, no forwarding is performed.
  • STA1 scans the surrounding network conditions and informs the associated AP1 of the existing BSS information and saves the relevant information.
  • FIG. 15 is a schematic diagram of the site assisting the AP to perform multi-point collaboration group establishment according to an alternative embodiment of the present invention, as shown in FIG. STA1, STA2 and AP1 are associated.
  • the APs that STA1 can scan are AP2, AP3, and AP4.
  • the APs that STA2 can scan are AP5 and AP6.
  • STA1 and STA2 respectively save the information scanned by themselves.
  • STA1 and STA2 report this information to AP1.
  • AP1 and STA2, STA3, STA4, STA5, and STA6 establish a multipoint collaboration group.
  • AP1 and AP2, AP3, AP4, AP5, and AP6 mutually store basic service set attribution information.
  • the AP1 notifies the established multipoint collaboration group information to STA1 and STA2 by means of unicast or broadcast.
  • the multi-point collaboration information includes the MAC addresses of AP2, AP3, STA4, STA5, and STA6, and the corresponding BSS color.
  • the STA1 indicates that the multipoint cooperation function is turned on in the transmitted radio frame, and indicates the response information of the multipoint cooperation, and the information includes the site identifier that needs to respond, the response duration, the corresponding frequency band resource, or the space time stream resource and the like.
  • the multi-point coordinated response information may be carried by PHY layer signaling or by MAC layer signaling. When carried by the MAC layer signaling, it can be carried in a separate subframe or in a domain.
  • the AP information of the STA1 selection response can be determined according to the result of the self-scan and the established multi-point collaboration group information.
  • FIG. 16 is a schematic diagram 1 of the station indication response information according to an alternative embodiment of the present invention, such as As shown in FIG. 16, although the established multi-point cooperation group includes AP2, AP3, STA4, STA5, and STA6. However, during the previous network listening process, STA1 found that it can only receive information about AP2, AP3, and STA4. At this time, STA1 indicates multi-point response information in the transmitted radio frame, indicating that AP1, AP2, AP3, and STA4 transmit an acknowledgement message in a specific space-time resource (MU-MIMO) or band resource (OFDMA) manner.
  • MU-MIMO space-time resource
  • OFDMA band resource
  • STA1 can determine that all subframes are correctly received according to the union of the Block ACK bitmaps in the acknowledgment messages sent by all APs, and does not need to retransmit, if the acknowledgment is sent according to all responding APs. To judge that some sub-frames receive errors, you only need to transmit the wrong sub-frames.
  • FIG. 17 is a second schematic diagram of site indication response information according to an alternative embodiment of the present invention.
  • STA1 sends a non-aggregated frame, it may indicate in the physical layer preamble or MAC layer signaling through multipoint cooperation.
  • Point collaboration response information This multipoint collaboration response message only contains site identification.
  • the AP of the radio frame is correctly received, and the AP indicated in the multipoint coordination response information directly responds to an acknowledgment (ACK), and all ACKs are transmitted at the same rate using the same band resource.
  • ACK acknowledgment
  • All APs belonging to the cooperative group that correctly receive the radio frame directly respond to an acknowledgement (ACK), all ACKs are transmitted at the same rate using the same band resources, and all ACKs use the same scrambling seed.
  • Embodiments of the present invention also provide a storage medium.
  • the foregoing storage medium may be Set to store the program code used to perform the following steps:
  • Step S402 The first access point receives the first data from the site, where the first data carries information indicating that the multi-point collaboration function is enabled, and the site belongs to the same basic service set as the first access point;
  • Step S404 The first access point receives the second data forwarded by the second access point, where the second access point belongs to the same multi-point cooperation group as the first access point, and the second data is from the first access point.
  • Step S406 The first access point determines the first data and the second data, and sends a confirmation message for indicating that the first data is correctly received to the station according to the determination result.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the first access point receives the first data from the site, where the first data carries information for indicating that the multipoint cooperation function is enabled, and further, the site and the first access point
  • the second access point belongs to the same basic service set; the first access point receives the second data forwarded by the second access point, where the second access point belongs to the same multi-point cooperation group as the first access point, and the second data comes from a site of the basic service set to which the first access point belongs, and then determining the first data and the second data, and sending a confirmation message indicating that the first data is correctly received to the site according to the judgment result, visible even if the site In the OBSS interval, the data can still be accurately sent to the access point belonging to a basic service set of the site, and is not affected by other access points, thereby solving the data between the OBSSs in the related art.
  • the problem of transmitting mutual influence has the effect of improving the correctness of data transmission.

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Abstract

本发明提供了一种无线局域网中协作传输的方法及装置，其中，该方法包括：第一接入点接收来自站点的第一数据，其中，第一数据中携带有用于指示开启多点协作功能的信息，站点与第一接入点属于同一基本服务集；第一接入点接收第二接入点转发的第二数据，其中，第二接入点与第一接入点属于同一多点协作组，第二数据来自第一接入点所属的基本服务集；第一接入点对第一数据和第二数据进行判断，并根据判断结果向站点发送用于指示正确接收到第一数据的确认消息。通过本发明，解决了相关技术中OBSS间由于站点之间的数据传输相互影响的问题，达到了提高数据传输的正确性的效果。

Description

无线局域网中协作传输的方法及装置 技术领域
本发明涉及通信领域，具体而言，涉及一种无线局域网中协作传输的方法及装置。
背景技术
目前，随着WLAN网络的爆发性应用，WLAN网络的部署不断密集化，网络负载也在不断加重，且随着网络的增多，网络覆盖重叠的情况也更加严重，WLAN网络的效率会出现明显下降的趋势，单纯提高速率并不能解决该问题。因此，IEEE标准组织成立了相关的任务小组致力于解决WLAN网络效率问题，其中，解决密集部署场景下的碰撞和干扰加剧的问题，引起了广泛关注和研究。
图1是相关技术中无线帧基本结构示意图，如图1所示，在OFDM系统中，无线帧的基本结构如图1所示，包含两部分：物理层前导和数据部分。物理层前导包含兼容传统设备的前导以及短训练域，长训练域，信令域等。
IEEE802.11定义的是介质访问控制(medium access control，简称为MAC)和物理层(Physical Layer，简称为PHY)的协议。定义了两种基本操作模式：分布式协调功能(Distributed Coordination Function，简称为DCF)和点协调功能(Point Coordination Function，简称为PCF)。
在WLAN的OFDM系统中，帧和帧之间的间隔称之为帧间间隔(Interframe Space，简称为IFS)。为了不同的需要，定义了多种帧间间隔：SIFS(short IFS)，PIFS(PCF IFS)，DIFS(DCF IFS)等。
由于WLAN网络中，站点接入信道一般采用的是自由竞争的方式，为了保证传输的可靠性，一般采用的帧交换是接收方在接收到目标站点是自己数据后的特定帧间间隔(SIFS)后，会发送确认消息(Acknowledgement)。随着版本演进，IEEE802.11协议引入了聚合帧操作，接收方收到聚合帧后，在特定的帧间间隔(SIFS)后，会发确认消息(Block Acknowledgement)。在Block Acknowledgement包含发送该聚合帧的地址，起始序列号(Starting Sequence Number)，业务标识(Traffic ID，简称为TID)，指示接收状态的位图(Block Ack Bitmap)。其中每一比特用于指示接收到的聚合帧中对应子帧的接收状态。如果该比特置为1，则表示对应的子帧正确接收，如果置0，则表示对应子帧没有正确接收。需要说明的是，Acknowledgement还是Block Acknowledgement都可以统称为确认消息。
MAC层的接收处理判断过程：对PHY层传递上来的MPDU(medium access control(MAC)protocol data unit，介质访问控制协议数据单元)进行校验，判断是否正确，如果正确，对MAC帧头做必要处理后，判断是自己是目标接收地址后，会从MPDU中得到MSDU(medium access control(MAC)service data unit，介质访问控制协议服务单元)，并向上层传递。
无线局域网的基本架构指一个基本服务集(Basic Service Set，简称BSS)，包含一个接入点(Access Point，简称AP)以及与AP相关联的多个站点(Station，简称STA)。如果两个BSS工作区域有重叠，工作频带相同或重叠称为重叠基础服务集(Overlapping Basic Service Set，简称为OBSS)，图2是相关技术中WLAN基本服务集BSS示意图，如图2所示，为了能够区别不同的BSS，可以通过BSS归属信息进行区别，在现有相关方案中，进行区别BSS归属信息包括BSSID(basic service set identifier，基本服务集标识)，通常和AP的MAC地址相同，在MAC层的帧头进行携带；还有就是BSS color，通常是在物理层的帧头指示。
图3是相关技术中OBSS间碰撞造成性能下降的示意图，在如图3所示的应用场景中，STA1和AP1组成一个BSS，STA2和AP2组成一个BSS，STA3和AP3组成一个BSS。当处于OBSS环境的STA1竞争信道向AP1发送数据时，这个时候由于STA3和STA1互为隐藏终端，即STA3会认为信道空闲，从而竞争信道向AP3发送数据，这个时候STA3发送的数据会干扰AP1对STA1的接收，造成网络吞吐下降。
在LTE中，存在多点协作(Coordinated Multiple Points，简称为Comp)的技术，在下行多个基站组成多点协作组(CoMP cooperating set)或称为多点协作集合，多个点(points)接收来自UE的数据。由于LTE中数据和确认之间的间隔较大，足够多点协作组进行转发处理。但是，在WLAN系统中，数据和确认消息之间的间隔很短(OFDM系统一般为16us)，使用该comp技术处理时间来不及。
针对相关技术中的上述问题，目前尚未存在有效的解决方案。
发明内容
本发明实施例提供了一种无线局域网中协作传输的方法及装置，以至少解决相关技术中OBSS间由于站点之间的数据传输相互影响的问题。
根据本发明实施例的一个方面，提供了一种无线局域网中协作传输的方法，包括：第一接入点接收来自站点的第一数据，其中，所述第一数据中携带有用于指示开启多点协作功能的信息，所述站点与所述第一接入点属于同一基本服务集；所述第一接入点接收第二接入点转发的第二数据，其中，所述第二接入点与所述第一接入点属于同一多点协作组，所述第二数据来自所述第一接入点所属的基本服务集；所述第一接入点对所述第一数据和所述第二数据进行判断，并根据判断结果向所述站点发送用于指示正确接收到所述第一数据的确认消息。
可选地，所述第一接入点对所述第一数据和所述第二数据进行判断，并根据判断结果向所述站点发送用于指示正确接收到所述第一数据的确认消息包括：所述第一接入点单独判断所述第一数据和所述第二数据；在判断结果为正确接收到所述第一数据或所述第二数据时，所述第一接入点向所述站点发送确认消息；在判断结果为未正确接收到所述第一数据和所述第二数据时，所述第一接入点将所述第一数据和所述第二数据进行合并处理，判断合并之后的数据是否为正确；在判断结果为正确接收时，所述第一接入点向所述站点发送确认消息。
可选地，所述第一数据中还携带有多点协作的操作方式，其中，所述操作方式包括：信 息合并方式；所述信息合并方式用于指示多点协作组除所述第一接入点之外的其他无线接入点接收到第一数据的处理方式。
可选地，所述信息合并包括以下之一：转发介质访问控制协议数据单元、转发接收到的介质访问控制协议服务单元、转发接收到的介质访问控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议服务单元、转发接收到的介质访问控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议数据单元。
可选地，在所述信息合并方式为转发介质访问控制协议数据单元时，所述第一接入点接收所述第二接入点转发的第二数据包括：所述第一接入点接收所述第二接入点发送的承载于第二数据的介质访问控制协议数据单元；在所述信息合并方式为转发接收到的介质访问控制协议数据单元时，所述第一接入点接收所述第二接入点转发的第二数据包括：所述第一接入点接收所述第二接入点发送的承载于第二数据的校验正确的介质访问控制服务单元；在所述信息合并方式为转发接收到的介质访问控制协议服务单元的接收状态再转发接收到的介质访问控制协议服务单元时，所述第一接入点接收所述第二接入点发送的第二数据包括：所述第一接入点接收所述第二接入点转发接收状态参数；所述第一接入点接收第二接入点转发的承载于第二数据的校验正确的介质访问控制服务单元；在所述信息合并方式为转发接收到的介质访问控制协议服务单元的接收状态再转发接收到的介质访问控制协议数据单元时，所述第一接入点接收所述第二接入点发送的第二数据包括：所述第一接入点接收所述第二接入点转发接收状态参数；所述第一接入点接收第二接入点转发的承载于第二数据的校验正确的介质访问控制数据单元。
可选地，所述的接收状态参数包括：发送所述第二数据的介质访问控制地址、起始序列号、业务标识、接收状态位图。
可选地，所述操作方式还包括：帧间间隔，其中，所述帧间间隔为所述第一接入点发送的确认消息与发送所述第一数据之间的时间间隔。
可选地，所述第一数据中还携带有多点协作的响应信息，其中，所述响应信息至少包括：接入点标识；所述接入点标识为对所述站点发送的所述无线帧进行确认的接入点标识。
可选地，所述方法还包括：在所述接入点标识中包括所述第一接入点时，所述第一接入点在所述第一数据发送的频带资源发送确认消息。
可选地，所述响应信息还包括：确认消息时长、频带资源、或空时流资源，其中，所述确认消息时长为对所述站点发送的所述无线帧的确认的持续时间；所述频带资源或空时流资源为所述站点发送的所述无线帧进行确认时需要占用的频带资源或空时流资源。
可选地，在所述响应站点标识中包括所述第一接入点和所述第二接入点的标识时，所述第一接入点在所述标识对应的频带资源或空时流发送响应的确认消息，其中，所述确认消息持续时长满足所述第一数据中携带的所述确认消息时长的要求；所述第二接入点在所述标识对应的所述频带资源或空时流发送响应的确认信息，所述确认信息持续时长满足所述第一数 据中携带的所述确认消息时长的要求。
可选地，所述多点协作组中的接入点保存多点协作组中的其他接入点的基本服务集归属标识。
可选地，所述第一数据中还携带有基本服务集归属标识。
可选地，在第一接入点接收所述第一数据之前，所述方法还包括：所述第一接入点向所述站点通知所述第一接入点支持的多点协作操作方式。
根据本发明实施例的又一个方面，提供了一种无线局域网中协作传输的方法，包括：第二接入点接收来自站点的第一数据，其中，所述第一数据中携带用于指示开启多点协作功能的信息，该所述第一数据来自与所述第二接入点属于同一协作组的第一接入点所属的基本服务集；第二接入点向所述第一接入点转发所述第一数据。
可选地，所述第一数据中还携带有多点协作的操作方式，其中，所述操作方式包括：信息合并方式；所述信息合并方式用于指示多点协作组除所述第一接入点之外的其他无线接入点接收到第一数据的处理方式。
可选地，所述信息合并包括以下之一：转发介质访问控制协议数据单元，转发接收到的介质访问控制协议服务单元，转发接收到的介质访问控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议服务单元，转发接收到的介质访问控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议数据单元。
可选地，在所述信息合并方式为转发介质访问控制协议数据单元时，所述第二接入点向所述第一接入点发送第二数据包括：所述第二接入点向所述第一接入点发送承载于第二数据的介质访问控制协议数据单元；在所述信息合并方式为转发接收到的介质访问控制协议数据单元时，所述第二接入点向所述第一接入点发送第二数据包括：所述第二接入点向所述第一接入点发送承载于第二数据的校验正确的介质访问控制服务单元；在所述信息合并方式为转发接收到的介质访问控制协议服务单元的接收状态再转发接收到的介质访问控制协议服务单元时，所述第二接入点向所述第一接入点发送第二数据包括：所述第二接入点向所述第一接入点发送接收状态参数；第二接入点向所述第一接入点发送承载于第二数据的校验正确的介质访问控制服务单元；在所述信息合并方式为转发接收到的介质访问控制协议服务单元的接收状态再转发接收到的介质访问控制协议数据单元时，所述第二接入点向所述第一接入点发送第二数据包括：所述第二接入点向所述第一接入点发送接收状态参数；第二接入点向所述第一接入点发送承载于第二数据的校验正确的介质访问控制数据单元。
可选地，所述的接收状态参数包括发送所述第二数据的介质访问控制地址，起始序列号，业务标识，接收状态位图。
可选地，所述操作方式还包括：帧间间隔；所述第二接入点需要帧间间隔对应时刻之前向所述第一接入点发送所述第二数据。
可选地，所述第一数据中还携带有多点协作的响应信息，其中，所述响应信息包括：接入点标识；所述接入点标识为对所述站点发送的所述第一数据进行确认的接入点标识。
可选地，所述方法还包括：在所述接入点标识中包括所述第二接入点的标识时，所述第二接入点在所述第一数据发送的频带资源发送确认消息。
可选地，所述响应信息还包括确认消息时长、频带资源、或空时流资源，其中，所述确认消息时长为对所述站点发送的所述第一数据的确认的持续时间；所述频带资源或空时流资源为所述站点发送的所述第一数据进行确认时需要占用的频带资源或空时流资源。
可选地，在所述响应信息中包括所述第二接入点的标识时，所述第二接入点在所述标识对应的频带资源或空时流发送响应的确认信息，所述确认信息持续时长满足所述第一数据中携带的所述确认消息时长的要求。
根据本发明实施例的再一个方面，提供了一种无线局域网中协作传输的方法，包括：站点向第一接入点发送第一数据，其中，所述第一数据中携带有用于指示开启多点协作功能的信息，所述站点与所述第一接入点属于同一基本服务集。
可选地，所述第一数据中还携带有多点协作的操作方式；其中，所述操作方式包括：信息合并方式；所述信息合并方式用于指示多点协作组除所述第一接入点之外的其他无线接入点接收到第一数据的处理方式。
可选地，所述信息合并包括以下之一：转发介质访问控制协议数据单元、转发接收到的介质访问控制协议服务单元、转发接收到的介质访问控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议服务单元、转发接收到的介质访问控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议数据单元。
可选地，所述第一数据中还携带有多点协作的响应信息，其中，所述响应信息包括：接入点标识；所述接入点标识为对所述站点发送的所述第一数据进行确认的接入点标识。
可选地，所述响应信息还包括：确认消息时长、频带资源、或空时流资源，其中，所述确认消息时长为对所述站点发送的所述第一数据的确认的持续时间；所述频带资源或空时流资源为所述站点发送的所述第一数据进行确认时需要占用的频带资源或空时流资源。
根据本发明实施例的再一个方面，提供了一种无线局域网中协作传输的装置，应用于第一接入点侧，包括：第一接收模块，设置为接收来自站点的第一数据，其中，所述第一数据中携带有用于指示开启多点协作功能的信息，所述站点与所述第一接入点属于同一基本服务集；第二接收模块，设置为接收第二接入点转发的第二数据，其中，所述第二接入点与所述第一接入点属于同一多点协作组，所述第二数据来自所述第一接入点所属的基本服务集；处理模块，设置为对所述第一数据和所述第二数据进行判断，并根据判断结果向所述站点发送用于指示正确接收到所述第一数据的确认消息。
根据本发明实施例的又一个方面，提供了一种无线局域网中协作传输的装置，应用于第 二接入点侧，包括：第三接收模块，设置为接收来自站点的第一数据，其中，所述第一数据中携带用于指示开启多点协作功能的信息，该所述第一数据来自与所述第二接入点属于同一协作组的第一接入点所属的基本服务集；第一发送模块，设置为向所述第一接入点转发所述第一数据。
根据本发明实施例又一个方面，提供了一种无线局域网中协作传输的装置，应用于站点侧，包括：第二发送模块，设置为向第一接入点发送第一数据，其中，所述第一数据中携带有用于指示开启多点协作功能的信息，所述站点与所述第一接入点属于同一基本服务集。
根据本发明的又一个实施例，还提供了一种存储介质。该存储介质设置为存储用于执行以下步骤的程序代码：
接收来自站点的第一数据，其中，所述第一数据中携带有用于指示开启多点协作功能的信息，所述站点与所述第一接入点属于同一基本服务集；接收第二接入点转发的第二数据，其中，所述第二接入点与所述第一接入点属于同一多点协作组，所述第二数据来自所述第一接入点所属的基本服务集；对所述第一数据和所述第二数据进行判断，并根据判断结果向所述站点发送用于指示正确接收到所述第一数据的确认消息。
可选地，存储介质还设置为存储用于执行以下步骤的程序代码：
单独判断所述第一数据和所述第二数据；在判断结果为正确接收到所述第一数据或所述第二数据时，所述第一接入点向所述站点发送确认消息；在判断结果为未正确接收到所述第一数据和所述第二数据时，将所述第一数据和所述第二数据进行合并处理，判断合并之后的数据是否为正确；在判断结果为正确接收时，所述第一接入点向所述站点发送确认消息。
根据本发明的又一个实施例，还提供了一种存储介质。该存储介质设置为存储用于执行以下步骤的程序代码：
接收来自站点的第一数据，其中，所述第一数据中携带用于指示开启多点协作功能的信息，该所述第一数据来自与所述第二接入点属于同一协作组的第一接入点所属的基本服务集；向所述第一接入点转发所述第一数据。
在本发明实施例中，第一接入点接收来自站点的第一数据，其中，该第一数据中携带有用于指示开启多点协作功能的信息，此外，该站点与该第一接入点属于同一基本服务集；进而该第一接入点接收第二接入点转发的第二数据，其中，第二接入点与第一接入点属于同一多点协作组，第二数据来自第一接入点所属的基本服务集的站点，之后该对第一数据和第二数据进行判断，并根据判断结果向站点发送用于指示正确接收到第一数据的确认消息，可见，即使站点处于OBSS区间，仍然可以将数据准确的发送到与该站点同属于一个基本服务集的接入点，不会受到其他接入点的影响，从而解决了相关技术中OBSS间由于站点之间的数据传输相互影响的问题，达到了提高数据传输的正确性的效果。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是相关技术中无线帧基本结构示意图；
图2是相关技术中WLAN基本服务集BSS示意图；
图3是相关技术中OBSS间碰撞造成性能下降的示意图；
图4是根据本发明实施例的一种无线局域网协作传输的方法的流程图；
图5是根据本发明实施例的无线局域网中协作传输的方法流程图二；
图6是根据本发明实施例的无线局域网中协作传输的方法流程图三；
图7是根据本发明实施例的无线局域网中协作传输的装置结构框图一；
图8是根据本发明实施例的无线局域网中协作传输的装置结构框图二；
图9是根据本发明实施例的无线局域网中协作传输的装置结构框图三；
图10是根据本发明可选实施例的多BSS的多点协作示意图；
图11是根据本发明可选实施例的合并方式为转发介质访问控制协议数据单元的示意图；
图12是根据本发明可选实施例的合并方式为转发接收到的介质访问控制协议服务单元的示意图；
图13是根据本发明可选实施例的合并方式为转发接收到的介质访问控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议服务单元的示意图；
图14是根据本发明可选实施例的合并方式为转发接收到的介质访问控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议数据单元的示意图；
图15是根据本发明可选实施例的站点协助AP进行多点协作组建立的示意图；
图16是根据本发明可选实施例的站点指示响应信息的示意图一；
图17是根据本发明可选实施例的站点指示响应信息的示意图二。
具体实施方式
下文中将参考附图并结合实施例来详细说明本发明。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组合。
需要说明的是，本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
在本实施例中提供了一种无线局域网协作传输的方法，图4是根据本发明实施例的一种 无线局域网协作传输的方法的流程图，如图4所示，该流程包括如下步骤：
步骤S402：第一接入点接收来自站点的第一数据，其中，第一数据中携带有用于指示开启多点协作功能的信息，站点与第一接入点属于同一基本服务集；
步骤S404：第一接入点接收第二接入点转发的第二数据，其中，第二接入点与第一接入点属于同一多点协作组，第二数据来自第一接入点所属的基本服务集；
步骤S406：第一接入点对第一数据和第二数据进行判断，并根据判断结果向站点发送用于指示正确接收到第一数据的确认消息。
在本实施例的上述步骤S402至步骤S406中，第一接入点接收来自站点的第一数据，其中，该第一数据中携带有用于指示开启多点协作功能的信息，此外，该站点与该第一接入点属于同一基本服务集；进而该第一接入点接收第二接入点转发的第二数据，其中，第二接入点与第一接入点属于同一多点协作组，第二数据来自第一接入点所属的基本服务集的站点，之后该对第一数据和第二数据进行判断，并根据判断结果向站点发送用于指示正确接收到第一数据的确认消息，可见，即使站点处于OBSS区间，仍然可以将数据准确的发送到与该站点同属于一个基本服务集的接入点，不会受到其他接入点的影响，从而解决了相关技术中OBSS间由于站点之间的数据传输相互影响的问题，达到了提高数据传输的正确性的效果。
在本实施例的可选实施方式中，对于本实施例中的步骤S406中涉及到的对第一数据和第二数据进行判断，并根据判断结果向站点发送用于指示正确接收到第一数据和/或第二数据的确认消息的方式，可以通过如下方式来实现包括：
步骤S406-1：第一接入点单独判断第一数据和第二数据；
步骤S406-2：在判断结果为正确接收到第一数据或第二数据时，第一接入点向站点发送确认消息；在判断结果为未正确接收到第一数据和第二数据时，第一接入点将第一数据和第二数据进行合并处理，判断合并之后的数据是否为正确；在判断结果为正确接收时，第一接入点向站点发送确认消息。
需要说明的是，在本实施例的一个可选实施方式中，本实施例中涉及到的第一数据中还携带有多点协作的操作方式，其中，操作方式包括：信息合并方式；信息合并方式用于指示多点协作组除第一接入点之外的其他无线接入点接收到第一数据的处理方式。
其中，信息合并包括以下之一：转发介质访问控制协议数据单元、转发接收到的介质访问控制协议服务单元、转发接收到的介质访问控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议服务单元、转发接收到的介质访问控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议数据单元。
对于上述涉及到的不同信息合并方式对应有不同的第一接入点接收第二接入点转发的第二数据方式；
方式一：在信息合并方式为转发介质访问控制协议数据单元时，第一接入点接收第二接 入点转发的第二数据包括：第一接入点接收第二接入点发送的承载于第二数据的介质访问控制协议数据单元；
方式二：在信息合并方式为转发接收到的介质访问控制协议数据单元时，第一接入点接收第二接入点转发的第二数据包括：第一接入点接收第二接入点发送的承载于第二数据的校验正确的介质访问控制服务单元；
方式三：在信息合并方式为转发接收到的介质访问控制协议服务单元的接收状态再转发接收到的介质访问控制协议服务单元时，第一接入点接收第二接入点发送的第二数据包括：第一接入点接收第二接入点转发接收状态参数；第一接入点接收第二接入点转发的承载于第二数据的校验正确的介质访问控制服务单元；
方式四：在信息合并方式为转发接收到的介质访问控制协议服务单元的接收状态再转发接收到的介质访问控制协议数据单元时，第一接入点接收第二接入点发送的第二数据包括：第一接入点接收第二接入点转发接收状态参数；第一接入点接收第二接入点转发的承载于第二数据的校验正确的介质访问控制数据单元。
需要说明的是，上述涉及到的接收状态参数包括：发送第二数据的介质访问控制地址、起始序列号、业务标识、接收状态位图。
而在本实施例的另一个可选实施方式中，操作方式还包括：帧间间隔，其中，帧间间隔为第一接入点发送的确认消息与发送第一数据之间的时间间隔。
在本实施例的另一个可选实施方式中，第一数据中还携带有多点协作的响应信息，其中，响应信息至少包括：接入点标识；接入点标识为对站点发送的无线帧进行确认的接入点标识。基于此，在接入点标识中包括第一接入点时，第一接入点在第一数据发送的频带资源发送确认消息。
此外，本实施例中涉及到的响应信息还包括：确认消息时长、频带资源、或空时流资源，其中，确认消息时长为对站点发送的无线帧的确认的持续时间；频带资源或空时流资源为站点发送的无线帧进行确认时需要占用的频带资源或空时流资源。。
在本实施例的具体应用场景中，在响应站点标识中包括第一接入点和第二接入点的标识时，第一接入点在标识对应的频带资源或空时流发送响应的确认消息，其中，确认消息持续时长满足第一数据中携带的确认消息时长的要求；以及第二接入点在标识对应的频带资源或空时流发送响应的确认信息，确认信息持续时长满足第一数据中携带的确认消息时长的要求。。
对于本实施例中涉及到的多点协作组，该多点协作组中的接入点保存多点协作组中的其他接入点的基本服务集归属标识。也就是说，在多点协作组中各个接入点除了自身的基本服务集归属标识之外，还会保存该多点协作中其他接入点的基本服务集归属标识。可选地，本实施例中涉及到的第一数据中还可以携带有基本服务集归属标识。
而在本实施例的步骤S402中涉及到的在第一接入点接收第一数据之前，本实施例的方法 还可以包括：第一接入点向站点通知第一接入点支持的多点协作操作方式。
图5是根据本发明实施例的无线局域网中协作传输的方法流程图二，如图5所示，该方法的步骤包括：
步骤S502：第二接入点接收来自站点的第一数据，其中，第一数据中携带用于指示开启多点协作功能的信息，该第一数据来自与第二接入点属于同一协作组的第一接入点所属的基本服务集；
步骤S504：第二接入点向第一接入点转发第一数据。
需要说明的是，本实施例中的第一数据中还携带有多点协作的操作方式，其中，操作方式包括：信息合并方式；信息合并方式用于指示多点协作组除第一接入点之外的其他无线接入点接收到第一数据的处理方式。
其中，信息合并包括以下之一：转发介质访问控制协议数据单元，转发接收到的介质访问控制协议服务单元，转发接收到的介质访问控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议服务单元，转发接收到的介质访问控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议数据单元。
对于上述涉及到的不同信息合并方式对应有不同的第一接入点接收第二接入点转发的第二数据方式；
方式一：在信息合并方式为转发介质访问控制协议数据单元时，第一接入点接收第二接入点转发的第二数据包括：第一接入点接收第二接入点发送的承载于第二数据的介质访问控制协议数据单元；
方式二：在信息合并方式为转发接收到的介质访问控制协议数据单元时，第一接入点接收第二接入点转发的第二数据包括：第一接入点接收第二接入点发送的承载于第二数据的校验正确的介质访问控制服务单元；
方式三：在信息合并方式为转发接收到的介质访问控制协议服务单元的接收状态再转发接收到的介质访问控制协议服务单元时，第一接入点接收第二接入点发送的第二数据包括：第一接入点接收第二接入点转发接收状态参数；第一接入点接收第二接入点转发的承载于第二数据的校验正确的介质访问控制服务单元；
方式四：在信息合并方式为转发接收到的介质访问控制协议服务单元的接收状态再转发接收到的介质访问控制协议数据单元时，第一接入点接收第二接入点发送的第二数据包括：第一接入点接收第二接入点转发接收状态参数；第一接入点接收第二接入点转发的承载于第二数据的校验正确的介质访问控制数据单元。
其中，本实施例中涉及到的操作方式还包括：帧间间隔，其中，帧间间隔为第一接入点发送的确认消息与发送第一数据之间的时间间隔第二接入点需要帧间间隔对应时刻之前向第一接入点发送第二数据。
另外，本实施例中的第一数据中还携带有多点协作的响应信息，其中，响应信息包括：接入点标识；接入点标识为对站点发送的第一数据进行确认的接入点标识。
基于上述响应信息，本实施例的方法还可以包括：在接入点标识中包括第二接入点的标识时，第二接入点在第一数据发送的频带资源发送确认消息。
在本实施例的可选实施方式中，该响应信息还包括确认消息时长、频带资源、或空时流资源，其中，确认消息时长为对站点发送的第一数据的确认的持续时间；频带资源或空时流资源为站点发送的第一数据进行确认时需要占用的频带资源或空时流资源。
基于此，在响应信息中包括第二接入点的标识时，第二接入点在标识对应的频带资源或空时流发送响应的确认信息，确认信息持续时长满足第一数据中携带的确认消息时长的要求。
图6是根据本发明实施例的无线局域网中协作传输的方法流程图三，如图6所示，该方法的步骤包括：
步骤S602：站点向第一接入点发送第一数据，其中，第一数据中携带有用于指示开启多点协作功能的信息，站点与第一接入点属于同一基本服务集。
在本实施例的可选实施方式中，该第一数据中还携带有多点协作的操作方式；其中，操作方式包括：信息合并方式；信息合并方式用于指示多点协作组除第一接入点之外的其他无线接入点接收到第一数据的处理方式。
其中，信息合并包括以下之一：转发介质访问控制协议数据单元、转发接收到的介质访问控制协议服务单元、转发接收到的介质访问控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议服务单元、转发接收到的介质访问控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议数据单元。
此外，第一数据中还携带有多点协作的响应信息，其中，响应信息包括：接入点标识；接入点标识为对站点发送的第一数据进行确认的接入点标识。
在本实施例的可选实施方式中，响应信息还包括：确认消息时长、频带资源、或空时流资源，其中，确认消息时长为对站点发送的第一数据的确认的持续时间；频带资源或空时流资源为站点发送的第一数据进行确认时需要占用的频带资源或空时流资源。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本发明各个实施例的方法。
在本实施例中还提供了一种无线局域网协作传输的装置，该装置用于实现上述实施例及优选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定 功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图7是根据本发明实施例的无线局域网中协作传输的装置结构框图一，该装置应用于第一接入点侧，如图7所示，该装置包括：第一接收模块72，设置为接收来自站点的第一数据，其中，第一数据中携带有用于指示开启多点协作功能的信息，站点与第一接入点属于同一基本服务集；第二接收模块74，与第一接收模块72耦合连接，设置为接收第二接入点转发的第二数据，其中，第二接入点与第一接入点属于同一多点协作组，第二数据来自第一接入点所属的基本服务集；处理模块76，与第二接收模块74耦合连接，设置为对第一数据和第二数据进行判断，并根据判断结果向站点发送用于指示正确接收到第一数据的确认消息。
图8是根据本发明实施例的无线局域网中协作传输的装置结构框图二，该装置应用于第二接入点侧，如图8所示，该装置包括：第三接收模块82，设置为接收来自站点的第一数据，其中，第一数据中携带用于指示开启多点协作功能的信息，该第一数据来自与第二接入点属于同一协作组的第一接入点所属的基本服务集；第一发送模块84，与第三接收模块82耦合连接，设置为向第一接入点转发第一数据。
图9是根据本发明实施例的无线局域网中协作传输的装置结构框图三，该装置应用于站点侧，如图9所示，该装置包括：第二发送模块92，设置为向第一接入点发送第一数据，其中，第一数据中携带有用于指示开启多点协作功能的信息，站点与第一接入点属于同一基本服务集。
下面结合本发明的可选实施例对本发明进行举例说明；
可选实施例一：
如图3所示，网络中存在两个BSS，两个BSS的AP分别为AP1和AP2。STA1和AP1属于同一个BSS，STA2和AP2属于同一个BSS。AP1和AP2进行多点协作组的建立。多点协作组的标示可以通过相互保存基本服务集归属标识或产生基本协作组标识进行区别。本实施例描述的是保存基本服务集归属标识，AP1将本基本服务集归属标识(比如BSS color＝1)发送给AP2，AP2也将本BSS的基本服务集归属标识(比如BSS Color＝2)发送给AP1。AP1和AP2保存和自己组成基本服务集的基本服务集归属标识。
AP1和AP2进行协商的通信协议不限于无线局域网技术，可以通过其他无线技术或有线技术进行多点协作组的建立。这里只是列举了两个BSS的网络情况，但是多点协作组的建立不限于只是两个BSS的情况，组成多点协作组的无线接入点可以是任意个。此外，AP1和AP2之间相互了解是否有重叠区域，除了AP1和AP2本身进行信道扫描外，也可以通过关联的站点上报，比如STA1进行信道扫描，上报周围BSS的情况，这个时候，由于STA1可以扫描到AP2的存在，会将AP2的相关信息上报给AP1。AP1和AP2之间相互了解是否有重叠区域，也可以通过更上层网元，比如管理AP1和AP2的网元进行通知。此外，发起多点协作组建立可以是任意一个AP，也可以是管理这些AP的网元发起的。
在关联过程中，STA1和AP1会对多点协作进行能力协商，STA1了解AP1支持的合并方式和或响应方式。或者通过广播的方式(信标，beacon)通知。
在数据传输过程中，STA1可以根据网络情况(比如之前数据的传输成功率)或当前无线帧的长度来判断是否开启多点协作功能，可以可选的携带多点协作操作方式信息。在本实施例中，站点在发送的无线帧中只携带了开启多点协作功能的指示以及自己关联的基本服务集归属标识(BSS color＝1)，这两个信息都是通过物理层前导指示。
AP1接收到STA1的无线帧，通过解析物理层前导(Preamble)判断出站点开启了多点协作功能，并通过在物理层前导携带的BSS color＝1，AP1知道该无线帧是发给自己的，随后AP1对后续数据包进行接收处理。如果能够正确接收后续数据部分，则AP1不需处理其他AP转发的数据，如果AP1无法正确接收后续数据部分，则在特定时间内等待AP2转发的数据，该特定时间取决于AP1的处理能力。该特定时间应小于默认的短帧间间隔(SIFS)。
AP2正确接收到STA1发送数据的preamble，发现STA1启动了多点协作功能，则AP2将接收到的数据转发给AP1，AP2也可以将接收正确的数据转发给AP1。即使OBSS情况下，由于BSS color的产生会出现重叠。如果在AP2周围还有一个BSS(其AP为AP5)，AP5的BSS color和AP1的BSS Color相同(BSS color＝1),这个时候AP2收到来自AP5所在的BSS内的数据，发现其preamble开启了多点协作功能，且该数据帧携带的BSS color为5，AP2会将接收到的数据转发给AP1。AP1在接收到AP2转发的数据后，可以通过MAC address等信息判断不是本BSS内站点发送的数据，会丢弃。如果AP2转发的数据是错误的，进行合并，也不会带来比现在更差的效果。
AP1对AP2转发的数据进行判断，如果能够单独判断对错，则独立判断，如果判断是错的，可以和AP1接收的信号进行合并，判断对错。AP1对两路信号都无法正确接收，但是，对合并信号可能正确接收。
AP1如果能够正确接收，按照STA1发送的无线帧中的确认方式发送确认消息。AP1如果在SIFS内处理完AP2转发的数据，并且判断数据正确，则向STA1发送确认帧。如果在使用聚合帧(A-MPDU)，只要有一个子帧(subframe)正确，AP1就可以进行确认消息。
可选实施例二：
AP1和多个AP(比如AP2，AP4)组成了多点协作组，在多点协作组建立过程中，AP1和AP2，AP4相互通知基本服务集归属标识，本实施是采用BSS color进行区别，如图10所示，图10是根据本发明可选实施例的多BSS的多点协作示意图。
STA1和AP1属于同一个BSS，AP1成功接收到STA1的物理层前导(Preamble)，解析出站点开启了多点协作功能，通过在物理层前导携带的BSS color，AP1知道后续数据是发给自己的，随后AP1如果能够正确接收后续数据部分，则AP1不需要等待其他AP转发的数据，如果AP1无法正确接收后续数据部分，则在特定时间内等待其他转发的数据，该特定时间取决于AP1的处理能力。
AP2和AP4正确接收到STA1发送数据的preamble，发现STA1启动了多点协作功能，则AP2和AP4将接收到的数据转发给AP1。
如果AP2正处于接收状态或没有正确接收STA1发送的preamble，则AP2无法向AP1进行转发。
AP1对AP2和AP4转发的数据进行判断，如果能够单独判断对错，则独立判断，如果判断是错的，可以和AP1接收的信号进行合并，判断对错。AP1对多路信号都无法正确接收，但是，对合并信号可能正确接收。
AP1如果能够正确接收，按照STA1发送的无线帧中的确认方式发送确认消息。
可选实施例三：
AP1和AP2，AP4进行多点协作组的建立，AP1将基本服务集标识(比如BSS color)发送给AP2和AP4，如图10所示。
在关联过程中，STA1和AP1会对多点协作进行能力协商，STA1了解AP1支持的合并方式和或响应方式。或者通过广播的方式(信标，beacon)通知。
STA1和AP1属于同一个BSS，STA1在发送的无线帧中指示开启多点协作功能，并且指示信息合并方式，信息合并方式包括原始信号转发，接收AP只将正确的信号转发，接收AP先将接收状态转发等，支持的信息合并方式不限于上述描述的情况，其他信息合并方式也可以进行指示。
信息合并方式可以通过物理层前导(preamble)中几比特来联合指示出支持的合并状态，如表1所示，使用2比特来指示支持的合并方式。其中，如果指示为00表示转发介质访问控制协议数据单元；如果指示为01转发接收到的介质访问控制协议服务单元；如果指示为10，转发接收到的介质访问控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议服务单元。表1只列举了两种比特指示的情况，如果有更多的合并方式可以使用更多的比特进行指示。
表1
Figure PCTCN2017070968-appb-000001
Figure PCTCN2017070968-appb-000002
AP1成功接收到STA1的物理层前导(Preamble)，解析出站点开启了多点协作功能，通过在物理层前导携带的BSS color，AP1知道后续数据是发给自己的。
如果指示的信息合并方式为转发介质访问控制协议数据单元(MPDU)，图11是根据本发明可选实施例的合并方式为转发介质访问控制协议数据单元的示意图，如图11所示，随后AP1如果能够正确接收后续数据部分，则AP1不需要等待其他AP转发的数据，如果AP1无法正确接收后续数据部分，则在特定时间(默认SIFS或者物理层帧头指示新的帧间间隔)内等待AP2和AP4转发的数据，该特定时间取决于AP1的处理能力。
AP2和AP4正确接收到STA1发送数据的preamble，发现STA1启动了多点协作功能，且指示为转发介质访问控制协议数据单元，则AP2和AP4将接收到的MPDU转发给AP1。
AP1对AP2，AP4转发的数据进行判断，如果能够单独判断对错，则独立判断，如果判断是错的，可以和AP1接收的信号进行合并，判断对错。AP1对两路信号都无法正确接收，但是，对合并信号可能正确接收。
如果指示的信息合并方式为接收AP转发接收到的介质访问控制协议服务单元，则AP2和AP4对接收的数据进行正确和错误判断(校验)，包含在数据中正确的MSDU转发给AP1，图12是根据本发明可选实施例的合并方式为转发接收到的介质访问控制协议服务单元的示意图，图12所示，STA1发送一个聚合包(A-MPDU)，包含四个子帧(subframe 1，subframe 2，subframe 3，subframe 4)，每个子帧中包含一个MSDU，和四个子帧对应为MSDU 1，MSDU 2，MSDU 3,MSDU 4。AP1成功的收到了subframe 1和subframe 3，AP2成功收到了MSDU 1和MSDU 4，AP4成功收到了MSDU 1，MSDU 2，MSDU 3,。AP2将接收正确的MSDU 1和MSDU4转发给AP1，AP4将接收正确的MSDU 1，MSDU 2，MSDU 3转发给AP1。这个时候需要区别这些MSDU来源的必要标识，地址，序列号等。AP1根据所有AP转发的正确数据并集生成确认帧进行响应，这个时候AP1可以判断其接收到的所有数据都是正确的，会发送给AP1包含所有子帧都正确的确认消息。
如果指示的信息合并方式是先转发接收到的介质访问控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议服务单元。那么AP2和AP4对接收的数据进行正确和错误判断，将处理的结果生成一个状态比特图，并且携带站点的MAC地址，状态比特图确认的起始序列号，业务标识等，图13是根据本发明可选实施例的合并方式为转发接收到的介质访问 控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议服务单元的示意图，如图13所示，在AP2和AP4给AP1发送的状态图下面标识的是对应的子帧编号。
STA1发送一个聚合包(A-MPDU)，包含四个子帧(subframe 1，subframe 2，subframe 3，subframe 4)，每个子帧中包含一个MSDU或A-MSDU。四个子帧对应为MSDU 1，MSDU 2，MSDU 3,MSDU 4。AP1成功的收到了MSDU 1和MSDU 3，AP2成功收到了MSDU 1和MSDU4，AP4成功收到了MSDU 1，MSDU 2和MSDU 3。AP2和AP4先将接收到的子帧的正确错误的接收状态反馈(包括必要的区别信息，站点的MAC地址，状态比特图确认的起始序列号，业务标识)给AP1，在随后的时间，AP2和AP4再将正确的介质访问控制协议服务单元转发给AP1，AP2发送MSDU1和MSDU 4，AP4发送MSDU1和MSDU 2，MSDU 3。这个时候需要区别这些数据来源的必要标识，地址，序列号等。AP1根据所有AP转发的状态比特图的并集生成确认帧进行确认消息(图13中确认消息只标示了Block Ack Bitmap的信息，其他信息在Block ack中相应设置)。虽然AP1本身没有成功收对所有子帧，但是通过AP2和AP4转发的信息，可以判断所有子帧都正确接收。如果AP2和AP4没有收对任何MSDU，则不进行状态转发和MSDU转发。
如果指示的信息合并方式是先转发接收到的介质访问控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议数据单元。那么AP2和AP4对接收的数据进行正确和错误判断，将处理的结果生成一个状态比特图，并且携带站点的MAC地址，状态比特图确认的起始序列号，业务标识等，图14是根据本发明可选实施例的合并方式为转发接收到的介质访问控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议数据单元的示意图，如图14所示，在AP2和AP4给AP1发送的状态图下面标识的是对应的子帧编号。
STA1发送一个聚合包(A-MPDU)，包含四个子帧(subframe 1，subframe 2，subframe 3，subframe 4)，每个子帧中包含一个MPDU。四个子帧对应为MPDU 1，MPDU 2，MPDU 3,MPDU4。AP1成功的收到了MPDU 1和MPDU 3，AP2成功收到了MPDU 1和MPDU 4，AP4成功收到了MPDU1，MPDU 2和MPDU 3。AP2和AP4先将接收到的子帧的正确错误的接收状态反馈(包括必要的区别信息，站点的MAC地址，状态比特图确认的起始序列号，业务标识)给AP1，在随后的时间，AP2和AP4再将正确的介质访问控制协议数据单元转发给AP1，AP2发送MPDU1和MPDU 4，AP4发送MPDU1和MPDU 2，MPDU 3。这个时候不需要区别这些数据来源的必要标识，地址，序列号等(MPDU的MAC帧头包含这些信息)。AP1根据所有AP转发的状态比特图的并集生成确认帧进行响应(图14中确认消息只标示了Block Ack Bitmap的信息，其他信息在Block ack中相应设置。在上述场景中，虽然AP1没有成功收到所有子帧，但是通过AP2和AP4转发的信息，AP1可以判断自己成功收到了所有子帧。
考虑到如果采用短帧间间隔进行响应的话，AP的处理来不及，在多点协作操作方式中还包括了帧间间隔，是指接收站点发送确认消息的帧间间隔。AP1使用该指示信息进行响应。如果无线帧中携带了帧间间隔，则AP2和AP4要在帧间间隔内把信息转发给AP1，否则不进行转发。
可选实施例四：
STA1扫描周围的网络情况，并将周围存在的BSS信息告诉给关联的AP1，并且保存相关信息。
AP1根据STA1上报的BSS信息，以及自己扫描的BSS信息，建立多点协作组，图15是根据本发明可选实施例的站点协助AP进行多点协作组建立的示意图，如图15所示，STA1，STA2和AP1进行关联。STA1能够扫描到的AP为AP2，AP3，AP4。STA2能够扫描到的AP为AP5和AP6。STA1和STA2分别保存自己扫描到的信息。STA1和STA2将这些信息上报给AP1。AP1和STA2，STA3，STA4，STA5，STA6建立多点协作组。AP1和AP2，AP3，AP4，AP5，AP6相互保存基本服务集归属标示信息。
AP1将建立的多点协作组信息通过单播或广播的方式通知给STA1和STA2。其中多点协作信息包括AP2，AP3，STA4，STA5，STA6的MAC地址，对应的BSS color等信息。
STA1在发送的无线帧中指示开启多点协作功能，并且指示多点协作的响应信息，信息包括需要响应的站点标识，响应时长，对应的频带资源或者空时流资源等信息。多点协作的响应信息可以通过PHY层信令进行携带也可以通过MAC层信令进行携带。通过MAC层信令携带时，可以通过独立的子帧携带，也可以通过域携带。STA1选择响应的AP信息可以根据自己扫描的结果以及建立的多点协作组信息进行确定。
接收到STA1发送的无线帧后，需要确认的AP对接收的数据进行正确判断，在无线帧指示的资源进行响应，图16是根据本发明可选实施例的站点指示响应信息的示意图一，如图16所示，虽然建立的多点协作组中包括AP2，AP3，STA4，STA5，STA6。但是，STA1在之前的网络侦听过程中，发现，只能收到AP2，AP3，STA4的信息。这个时候STA1在发送的无线帧中指示多点响应信息，指示AP1，AP2，AP3，STA4在特定的空时资源(MU-MIMO)或频带资源(OFDMA)方式发送确认消息。
随后这些AP将数据转发给AP1。没有被STA1调度响应的AP可以不向AP1转发数据。STA1根据接收到的确认消息，如果根据所有AP发送的确认消息中状态图(Block ACK bitmap)的并集能够判断所有子帧被正确接收，则不需要重传，如果根据所有响应AP发送的确认，判断部分子帧接收错误，则只需将错误的子帧进行传输即可。
可选实施例五
图17是根据本发明可选实施例的站点指示响应信息的示意图二，如图17所示，如果STA1发送的是非聚合帧，可以通过多点协作在物理层前导或者MAC层信令中指示多点协作的响应信息。该多点协作响应信息只包含站点标示。正确接收该无线帧的AP，且在多点协作响应信息中指示的AP直接响应确认(ACK)，所有ACK都是在相同频带资源使用相同速率进行发送的。甚至，STA1发送的是非聚合帧，可以通过多点协作在物理层前导或者MAC层信令中一比特来指示，所有正确接收该无线帧的属于该协作组的AP直接响应确认(ACK)，所有ACK都是在相同频带资源使用相同速率进行发送的，所有ACK都使用相同的扰码种子。
本发明的实施例还提供了一种存储介质。可选地，在本实施例中，上述存储介质可以被 设置为存储用于执行以下步骤的程序代码：
步骤S402：第一接入点接收来自站点的第一数据，其中，第一数据中携带有用于指示开启多点协作功能的信息，站点与第一接入点属于同一基本服务集；
步骤S404：第一接入点接收第二接入点转发的第二数据，其中，第二接入点与第一接入点属于同一多点协作组，第二数据来自第一接入点所属的基本服务集；
步骤S406：第一接入点对第一数据和第二数据进行判断，并根据判断结果向站点发送用于指示正确接收到第一数据的确认消息。
可选地，本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例，本实施例在此不再赘述。
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
工业实用性
在本发明实施例中，第一接入点接收来自站点的第一数据，其中，该第一数据中携带有用于指示开启多点协作功能的信息，此外，该站点与该第一接入点属于同一基本服务集；进而该第一接入点接收第二接入点转发的第二数据，其中，第二接入点与第一接入点属于同一多点协作组，第二数据来自第一接入点所属的基本服务集的站点，之后该对第一数据和第二数据进行判断，并根据判断结果向站点发送用于指示正确接收到第一数据的确认消息，可见，即使站点处于OBSS区间，仍然可以将数据准确的发送到与该站点同属于一个基本服务集的接入点，不会受到其他接入点的影响，从而解决了相关技术中OBSS间由于站点之间的数据传输相互影响的问题，达到了提高数据传输的正确性的效果。

Claims (32)

  1. 一种无线局域网中协作传输的方法，包括：
    第一接入点接收来自站点的第一数据，其中，所述第一数据中携带有用于指示开启多点协作功能的信息，所述站点与所述第一接入点属于同一基本服务集；
    所述第一接入点接收第二接入点转发的第二数据，其中，所述第二接入点与所述第一接入点属于同一多点协作组，所述第二数据来自所述第一接入点所属的基本服务集；
    所述第一接入点对所述第一数据和所述第二数据进行判断，并根据判断结果向所述站点发送用于指示正确接收到所述第一数据的确认消息。
  2. 根据权利要求1所述的方法，其中，所述第一接入点对所述第一数据和所述第二数据进行判断，并根据判断结果向所述站点发送用于指示正确接收到所述第一数据的确认消息包括：
    所述第一接入点单独判断所述第一数据和所述第二数据；在判断结果为正确接收到所述第一数据或所述第二数据时，所述第一接入点向所述站点发送确认消息；
    在判断结果为未正确接收到所述第一数据和所述第二数据时，所述第一接入点将所述第一数据和所述第二数据进行合并处理，判断合并之后的数据是否为正确；在判断结果为正确接收时，所述第一接入点向所述站点发送确认消息。
  3. 根据权利要求1所述的方法，其中，所述第一数据中还携带有多点协作的操作方式，其中，所述操作方式包括：信息合并方式；所述信息合并方式用于指示多点协作组除所述第一接入点之外的其他无线接入点接收到第一数据的处理方式。
  4. 根据权利要求3所述的方法，其中，所述信息合并包括以下之一：转发介质访问控制协议数据单元、转发接收到的介质访问控制协议服务单元、转发接收到的介质访问控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议服务单元、转发接收到的介质访问控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议数据单元。
  5. 根据权利要求4所述的方法，其中，
    在所述信息合并方式为转发介质访问控制协议数据单元时，所述第一接入点接收所述第二接入点转发的第二数据包括：所述第一接入点接收所述第二接入点发送的承载于第二数据的介质访问控制协议数据单元；
    在所述信息合并方式为转发接收到的介质访问控制协议数据单元时，所述第一接入点接收所述第二接入点转发的第二数据包括：所述第一接入点接收所述第二接入点发送的承载于第二数据的校验正确的介质访问控制服务单元；
    在所述信息合并方式为转发接收到的介质访问控制协议服务单元的接收状态再转发接收到的介质访问控制协议服务单元时，所述第一接入点接收所述第二接入点发送的第二数据包括：所述第一接入点接收所述第二接入点转发接收状态参数；所述第一接入点 接收第二接入点转发的承载于第二数据的校验正确的介质访问控制服务单元；
    在所述信息合并方式为转发接收到的介质访问控制协议服务单元的接收状态再转发接收到的介质访问控制协议数据单元时，所述第一接入点接收所述第二接入点发送的第二数据包括：所述第一接入点接收所述第二接入点转发接收状态参数；所述第一接入点接收第二接入点转发的承载于第二数据的校验正确的介质访问控制数据单元。
  6. 根据权利要求5所述的方法，其中，所述接收状态参数包括：发送所述第二数据的介质访问控制地址、起始序列号、业务标识、接收状态位图。
  7. 根据权利要求3所述的方法，其中，所述操作方式还包括：帧间间隔，其中，所述帧间间隔为所述第一接入点发送的确认消息与发送所述第一数据之间的时间间隔。
  8. 根据权利要求1所述的方法，其中，所述第一数据中还携带有多点协作的响应信息，其中，所述响应信息至少包括：接入点标识；所述接入点标识为对所述站点发送的所述无线帧进行确认的接入点标识。
  9. 根据权利要求8所述的方法，其中，所述方法还包括：
    在所述接入点标识中包括所述第一接入点时，所述第一接入点在所述第一数据发送的频带资源发送确认消息。
  10. 根据权利要求8所述的方法，其中，所述响应信息还包括：确认消息时长、频带资源、或空时流资源，其中，所述确认消息时长为对所述站点发送的所述无线帧的确认的持续时间；所述频带资源或空时流资源为所述站点发送的所述无线帧进行确认时需要占用的频带资源或空时流资源。
  11. 根据权利要求10所述的方法，其中，在所述响应站点标识中包括所述第一接入点和所述第二接入点的标识时，
    所述第一接入点在所述标识对应的频带资源或空时流发送响应的确认消息，其中，所述确认消息持续时长满足所述第一数据中携带的所述确认消息时长的要求；
    所述第二接入点在所述标识对应的所述频带资源或空时流发送响应的确认信息，所述确认信息持续时长满足所述第一数据中携带的所述确认消息时长的要求。
  12. 根据权利要求1所述的方法，其中，所述多点协作组中的接入点保存多点协作组中的其他接入点的基本服务集归属标识。
  13. 根据权利要求1所述的方法，其中，所述第一数据中还携带有基本服务集归属标识。
  14. 根据权利要求1所述的方法，其中，在第一接入点接收所述第一数据之前，所述方法还包括：
    所述第一接入点向所述站点通知所述第一接入点支持的多点协作操作方式。
  15. 一种无线局域网中协作传输的方法，包括：
    第二接入点接收来自站点的第一数据，其中，所述第一数据中携带用于指示开启多点协作功能的信息，该所述第一数据来自与所述第二接入点属于同一协作组的第一接入点所属的基本服务集；
    第二接入点向所述第一接入点转发所述第一数据。
  16. 根据权利要求15所述的方法，其中，所述第一数据中还携带有多点协作的操作方式，其中，所述操作方式包括：信息合并方式；所述信息合并方式用于指示多点协作组除所述第一接入点之外的其他无线接入点接收到第一数据的处理方式。
  17. 根据权利要求16所述的方法，其中，所述信息合并包括以下之一：转发介质访问控制协议数据单元，转发接收到的介质访问控制协议服务单元，转发接收到的介质访问控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议服务单元，转发接收到的介质访问控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议数据单元。
  18. 根据权利要求17所述的方法，其中，
    在所述信息合并方式为转发介质访问控制协议数据单元时，所述第二接入点向所述第一接入点发送第二数据包括：所述第二接入点向所述第一接入点发送承载于第二数据的介质访问控制协议数据单元；
    在所述信息合并方式为转发接收到的介质访问控制协议数据单元时，所述第二接入点向所述第一接入点发送第二数据包括：所述第二接入点向所述第一接入点发送承载于第二数据的校验正确的介质访问控制服务单元；
    在所述信息合并方式为转发接收到的介质访问控制协议服务单元的接收状态再转发接收到的介质访问控制协议服务单元时，所述第二接入点向所述第一接入点发送第二数据包括：所述第二接入点向所述第一接入点发送接收状态参数；第二接入点向所述第一接入点发送承载于第二数据的校验正确的介质访问控制服务单元；
    在所述信息合并方式为转发接收到的介质访问控制协议服务单元的接收状态再转发接收到的介质访问控制协议数据单元时，所述第二接入点向所述第一接入点发送第二数据包括：所述第二接入点向所述第一接入点发送接收状态参数；第二接入点向所述第一接入点发送承载于第二数据的校验正确的介质访问控制数据单元。
  19. 根据权利要求18所述的方法，其中，所述的接收状态参数包括发送所述第二数据的介质访问控制地址，起始序列号，业务标识，接收状态位图。
  20. 根据权利要求16所述的方法，其中，所述操作方式还包括：帧间间隔，其中，所述帧间间隔为所述第一接入点发送的确认消息与发送所述第一数据之间的时间间隔。
  21. 根据权利要求15所述的方法，其中，所述第一数据中还携带有多点协作的响应信息，其中，所述响应信息包括：接入点标识；所述接入点标识为对所述站点发送的所述第一数 据进行确认的接入点标识。
  22. 根据权利要求21所述的方法，其中，所述方法还包括：
    在所述接入点标识中包括所述第二接入点的标识时，所述第二接入点在所述第一数据发送的频带资源发送确认消息。
  23. 根据权利要求21所述的方法，其中，所述响应信息还包括确认消息时长、频带资源、或空时流资源，其中，所述确认消息时长为对所述站点发送的所述第一数据的确认的持续时间；所述频带资源或空时流资源为所述站点发送的所述第一数据进行确认时需要占用的频带资源或空时流资源。
  24. 根据权利要求21所述的方法，其中，在所述响应信息中包括所述第二接入点的标识时，所述第二接入点在所述标识对应的频带资源或空时流发送响应的确认信息，所述确认信息持续时长满足所述第一数据中携带的所述确认消息时长的要求。
  25. 一种无线局域网中协作传输的方法，其中，包括：
    站点向第一接入点发送第一数据，其中，所述第一数据中携带有用于指示开启多点协作功能的信息，所述站点与所述第一接入点属于同一基本服务集。
  26. 根据权利要求25所述的方法，其中，所述第一数据中还携带有多点协作的操作方式；其中，所述操作方式包括：信息合并方式；所述信息合并方式用于指示多点协作组除所述第一接入点之外的其他无线接入点接收到第一数据的处理方式。
  27. 根据权利要求26所述的方法，其中，所述信息合并包括以下之一：转发介质访问控制协议数据单元、转发接收到的介质访问控制协议服务单元、转发接收到的介质访问控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议服务单元、转发接收到的介质访问控制协议服务单元的接收状态参数再转发接收到的介质访问控制协议数据单元。
  28. 根据权利要求25所述的方法，其中，所述第一数据中还携带有多点协作的响应信息，其中，所述响应信息包括：接入点标识；所述接入点标识为对所述站点发送的所述第一数据进行确认的接入点标识。
  29. 根据权利要求28所述的方法，其中，所述响应信息还包括：确认消息时长、频带资源、或空时流资源，其中，所述确认消息时长为对所述站点发送的所述第一数据的确认的持续时间；所述频带资源或空时流资源为所述站点发送的所述第一数据进行确认时需要占用的频带资源或空时流资源。
  30. 一种无线局域网中协作传输的装置，应用于第一接入点侧，包括：
    第一接收模块，设置为接收来自站点的第一数据，其中，所述第一数据中携带有用于指示开启多点协作功能的信息，所述站点与所述第一接入点属于同一基本服务集；
    第二接收模块，设置为接收第二接入点转发的第二数据，其中，所述第二接入点与 所述第一接入点属于同一多点协作组，所述第二数据来自所述第一接入点所属的基本服务集；
    处理模块，设置为对所述第一数据和所述第二数据进行判断，并根据判断结果向所述站点发送用于指示正确接收到所述第一数据的确认消息。
  31. 一种无线局域网中协作传输的装置，应用于第二接入点侧，包括：
    第三接收模块，设置为接收来自站点的第一数据，其中，所述第一数据中携带用于指示开启多点协作功能的信息，该所述第一数据来自与所述第二接入点属于同一协作组的第一接入点所属的基本服务集；
    第一发送模块，设置为向所述第一接入点转发所述第一数据。
  32. 一种无线局域网中协作传输的装置，应用于站点侧，包括：
    第二发送模块，设置为向第一接入点发送第一数据，其中，所述第一数据中携带有用于指示开启多点协作功能的信息，所述站点与所述第一接入点属于同一基本服务集。
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