WO2018210020A1 - 数据传输方法、系统及传输装置 - Google Patents

数据传输方法、系统及传输装置 Download PDF

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Publication number
WO2018210020A1
WO2018210020A1 PCT/CN2018/076444 CN2018076444W WO2018210020A1 WO 2018210020 A1 WO2018210020 A1 WO 2018210020A1 CN 2018076444 W CN2018076444 W CN 2018076444W WO 2018210020 A1 WO2018210020 A1 WO 2018210020A1
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Prior art keywords
data
data transmission
transmitted
transmission device
base station
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PCT/CN2018/076444
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English (en)
French (fr)
Inventor
孙铮
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中兴通讯股份有限公司
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Publication of WO2018210020A1 publication Critical patent/WO2018210020A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H04W80/12—Application layer protocols, e.g. WAP [Wireless Application Protocol]

Definitions

  • the present disclosure relates to the field of communications, and in particular, to a data transmission method, system, and transmission device.
  • LTE Long Term Evolution
  • WLAN Wireless Local Area Networks
  • the base station transmits part of the downlink data to the WLAN Termination (WT) device, so as to downlink the data through the WLAN.
  • WT WLAN Termination
  • the WT device receives the data that needs to be transmitted to the target terminal, and then sends the data to the access point (AP) device, and the AP device transmits the data to the corresponding target terminal.
  • AP access point
  • the WT device and the AP device use the Control and Provisioning of Wireless Access Points Protocol Specification (CAPWAP) for communication when transmitting data. Therefore, WT The device needs to encapsulate the data to be transmitted according to the protocol before it can be sent to the AP device. The communication between the AP device and the target terminal is not performed according to the CAPWAP protocol.
  • the AP device After receiving the downlink data encapsulated by the CAPWAP, the AP device performs corresponding decapsulation processing and then sends the data to the target terminal.
  • CAPWAP Wireless Access Points Protocol Specification
  • An embodiment of the present disclosure provides a data transmission method, including: a first data transmission device receives, from a base station, data to be transmitted that needs to be sent to a target terminal; and the first data transmission device passes the data to be transmitted through A Layer 2 network established between the data transmission devices is sent to the second data transmission device in an Ethernet encapsulation format for the second data transmission device to transmit the data to the target terminal.
  • An embodiment of the present disclosure further provides a data transmission method, including: a second data transmission apparatus receives, by a layer 2 network established with a first data transmission apparatus, a to-be-transmitted transmission sent by the first data transmission apparatus in an Ethernet encapsulation format. Data; the second data transmission device transmits the data to be transmitted to the target terminal according to the information in the Ethernet encapsulation header of the data to be transmitted.
  • An embodiment of the present disclosure further provides a data transmission apparatus, including: a receiving unit, configured to receive, from a base station, data to be transmitted to be sent to a target terminal, and a data sending unit, configured to send, by using a Layer 2 network, in an Ethernet encapsulation format. Transmitting data for transmitting to the target terminal by the device receiving the data to be transmitted.
  • An embodiment of the present disclosure further provides a data transmission apparatus, including: a receiving unit, configured to receive, by using a Layer 2 network, data to be transmitted sent in an Ethernet encapsulation format; and a data sending unit, configured to be encapsulated according to the Ethernet to be transmitted The information in the header transmits the data to be transmitted to the target terminal.
  • An embodiment of the present disclosure further provides a data transmission system, including a base station, a first data transmission device, and a second data transmission device, where the first data transmission device and the second data transmission device are connected through a Layer 2 network.
  • the first data transmission device is configured to receive, from the base station, data to be transmitted that needs to be sent to the target terminal, and send the data to be transmitted to the second data transmission in an Ethernet encapsulation format through a Layer 2 network.
  • And means for the second data transmission device to transmit the data to the target terminal.
  • Embodiments of the present disclosure also provide a computer storage medium having stored therein computer executable instructions for performing any of the foregoing data transmission methods or for implementing any of the foregoing Data transmission device.
  • Figure 1 is a schematic diagram of an LWA system architecture
  • FIG. 2 is a schematic diagram of a data transmission process based on LWA technology
  • FIG. 3 is an architectural diagram of a data transmission system provided in an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of an Ethernet frame format of an Ethernet package in an embodiment of the present disclosure.
  • FIG. 6 is a structural diagram of another data transmission system provided in an embodiment of the present disclosure.
  • FIG. 7 is a flowchart of another data transmission method provided in an embodiment of the present disclosure.
  • FIG. 8 is a flowchart of recording terminal path information of a wireless local area network termination device according to an embodiment of the present disclosure
  • FIG. 9 is a schematic structural diagram of a first data transmission apparatus provided in an embodiment of the present disclosure.
  • FIG. 10 is another schematic structural diagram of a first data transmission apparatus provided in an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of a second data transmission apparatus provided in an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a wireless local area network termination device according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of hardware of a base station according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of hardware of a wireless local area network termination device according to an embodiment of the present disclosure.
  • FIG. 15 is a schematic structural diagram of hardware of an access point device according to an embodiment of the present disclosure.
  • FIG. 16 is a structural diagram of a data transmission system provided in an embodiment of the present disclosure.
  • FIG. 1 is a schematic diagram of an LWA system architecture.
  • the base station 11 is separated from the WT device 12.
  • the WLAN termination device 12 can be deployed with an Access Controller (AC).
  • AC Access Controller
  • the terminal 14 can directly communicate with the base station 11 through the 4G signal, but at the same time, the terminal 14 can also access the wireless local area network where the wireless local area network termination device 12 is located through the AP device 13.
  • the base station 11 After receiving the data that needs to be transmitted to the terminal 14 from the Serving Gate Way (S-GW) 10, the base station 11 can directly transmit the data to the terminal 14 through the 4G signal.
  • the device that sends the data to be transmitted to the base station 11 can also be regarded as a Mobility Management Entity (MME).
  • MME Mobility Management Entity
  • the base station 11 may offload a part of the data to be transmitted to the wireless local area network for transmission.
  • the base station 11 transmits a part of the data to the wireless local area network termination device 12, and the wireless local area network termination device 12 passes the wireless.
  • the access point 13 is sent to the terminal 14, and the WLAN terminating device 12 and the base station 11 communicate through Xw (Xw refers to the interface between the base station and the WT) protocol.
  • the LWA data transmission scheme includes the following steps S201 to S208.
  • the base station splits the downlink data.
  • the base station splits the downlink data of the user at the PDCP layer to generate Protocol Data Unit (PDU) data of the LWA Adaptation Protocol (LWAAP).
  • PDU Protocol Data Unit
  • LWAAP LWA Adaptation Protocol
  • the LWAAP PDU data is data that needs to be transmitted by the WLAN network resource after being allocated by the base station in the downlink data of the user.
  • the base station performs GTPU encapsulation on the LWAAP PDU data to obtain a GTPU packet.
  • GTP The GPRS Tunelling Protocol
  • GTPC Signaling Control Protocol
  • GTPU Encapsulated User Data Protocol
  • GTP' Charging-related Protocol
  • the base station sends the GTPU packet to the WT device.
  • the encapsulated LWAAP PDU data (that is, the GTPU packet) is transmitted between the base station and the WT device through the GTP tunnel.
  • the WT device decapsulates the received GTPU packet.
  • the WT device Since the LWAAP PDU data sent by the base station to the WT device is encapsulated by the GTPU, after receiving the GTPU packet, the WT device decapsulates the GTPU packet and extracts the LWAAP PDU data originally sent by the base station from the GTPU packet. .
  • the WT device performs Ethernet encapsulation on the LWAAP PDU data to obtain an Ethernet packet.
  • the WT device When the WT device performs Ethernet encapsulation on the LWAAP PDU data, it needs to set information such as the source MAC address and the destination MAC address in the Ethernet encapsulation header. For the destination MAC address, the WT device needs to obtain a Tunnel Endpoint Identifier (TEID) of the GTP tunnel that receives the LWAAP PDU data, and then queries the local database according to the TEID.
  • TEID Tunnel Endpoint Identifier
  • the WT device when performing Ethernet encapsulation, the WT device also needs to fill in the frame data field protocol type of the Ethernet encapsulation header with "0x9E65", and "0x9E65" is used to represent the data as LWAAP PDU data.
  • S206 The WT device performs CAPWAP encapsulation on the Ethernet packet to obtain a CAPWAP packet.
  • the CAPWAP protocol is a general application layer protocol for comparison in data transmission.
  • the WT device sends the CAPWAP packet to the AP device.
  • An AC can manage multiple APs at the same time.
  • One AP can access one or more terminals.
  • the WT device After the WT device encapsulates the CAPWAP packet, the WT device sends the packet to the AP. Forward to the target terminal.
  • the AP device decapsulates the CAPWAP packet.
  • the AP device After receiving the CAPWAP packet, the AP device performs CAPWAP decapsulation on the received CAPWAP packet before the packet is forwarded, and then the Ethernet packet is destined according to the destination MAC address in the Ethernet encapsulation header of the decapsulated Ethernet packet. The text is forwarded to the corresponding terminal.
  • the terminal After receiving the Ethernet packet, if the information in the Ethernet type field included in the Ethernet encapsulation header is 0x9E65, the terminal determines that the packet is LWAAP PDU data, and therefore sends the packet to the LTE module.
  • the PDCP data is aggregated to obtain original data sent from the S-GW to the terminal.
  • the forwarded LWAAP PDU needs to undergo multiple encapsulation and decapsulation processes, which not only makes the data transmission efficiency lower, the user experience is greatly affected, but also occupies the LWA system.
  • the processing resources are not conducive to the optimal configuration of resources.
  • FIG. 3 is a schematic structural diagram of a data transmission system according to an embodiment of the present disclosure.
  • the data transmission system 3 of this embodiment includes a base station 310, a first data transmission device 320, and a second data transmission device. 330.
  • the data plane for transmitting data between the base station 310 and the first data transmission device 320 uses the GTPU protocol
  • the control plane uses the Xw control protocol (Xw-C).
  • the first data transmission device 320 in this embodiment may be a wireless local area network termination device
  • the second data transmission device 330 may be an access point device.
  • the WLAN termination device 12 and the AP device 13 communicate through a high-level protocol such as CAPWAP, and the communication is based on the CAPWAP protocol, mainly because the CAPWAP protocol is an application layer. Protocols, the use of such high-level protocols is relatively extensive. When the network system is large, all network elements agree to use a relatively common protocol for communication, thereby using a unified standard interface to facilitate mutual communication between devices of various manufacturers. However, in a smaller network such as a data transmission system, the CAPWAP protocol is used only between the WLAN terminating device 12 and the AP device 13, which in turn increases the WLAN terminating device 12 and the AP device 13 with other networks. The processing burden when the element interacts.
  • CAPWAP protocol is used only between the WLAN terminating device 12 and the AP device 13, which in turn increases the WLAN terminating device 12 and the AP device 13 with other networks. The processing burden when the element interacts.
  • a Layer 2 network is established between the first data transmission device 320 and the second data transmission device 330, and can be directly used when the first data transmission device 320 and the second data transmission device 330 are interacting. Ethernet packets for communication.
  • the base station 310 can receive data that needs to be transmitted to the target terminal 340 from the mobility management entity or the serving gateway 350 of the mobile communication network. After the base station 310 receives the data to be transmitted that needs to be sent to the target terminal 340, there are three choices: first, the base station 310 directly sends all the data to be transmitted to the target terminal 340 through the mobile communication network; The base station 310 directly transmits all the data to be transmitted to the target terminal 340 through the wireless local area network. Third, the base station 310 splits the received data to be transmitted, and allocates a part of the unpacked data to the mobile communication network. The base station 310 transmits the data to the target terminal 340. For another part of the data, the base station 310 transmits the data to the first data transmission device 320, and the first data transmission device 320 transmits the target data to the target terminal 340 through the wireless local area network.
  • the second and third options for transmitting data to be transmitted to the target terminal 340 through the wireless local area network are mainly described. It should be understood that whether part of the data is transmitted via the wireless local area network or all data is transmitted via the wireless local area network. Transmission, transmission path and processing are basically similar.
  • the data transmission method in this embodiment includes the following steps S401 to S403.
  • the first data transmission device 320 receives, from the base station 310, data to be transmitted that needs to be sent to the target terminal 340.
  • the networking communication mode between the first data transmission device 320 and the base station 310 can refer to related technologies.
  • the data to be transmitted needs to be encapsulated by the GTPU on the side of the base station 310, and then sent to the first data transmission device 320 in the form of a GTPU message.
  • the base station 310 transmits the GTPU message to the first data transmission device 320, it is transmitted through the GTP tunnel established with the first data transmission device 320.
  • the base station 310 uses the LWA technology to perform data transmission to the target terminal, the base station 310 needs to split the data according to the PDCP protocol after receiving all the data from the LTE network, thereby obtaining LWAAP PDU data.
  • the data transmission method provided in this embodiment is not limited to a scenario for merging an LTE network with a WLAN network.
  • the data to be transmitted sent by the base station 310 to the first data transmission device 320 is not necessarily the split data.
  • the base station 310 can directly follow the third option. All of the data to be transmitted is transmitted to the first data transmission device 320, and is transmitted by the first data transmission device 320 through the wireless local area network.
  • the above LTE network can be extended to all mobile communication networks, that is, the base station 310 does not necessarily receive data to be transmitted from the 4G network. If the technology is mature, for example, a 5G, 6G network or even a higher generation
  • the data transmission method provided by this embodiment is also applicable when the mobile communication network also supports convergence with the wireless local area network.
  • the first data transmission device 320 sends the data to be transmitted to the target second data transmission device 330 in an Ethernet encapsulation format through a Layer 2 network established between the second data transmission device 330 and the second data transmission device 330.
  • the first data transmission device 320 establishes a layer 2 network communication with the target second data transmission device 330, and then the data transmitted between the two is encapsulated by the Ethernet, that is, the first data.
  • the data to be transmitted transmitted by the transmission device 320 to the access point device is in the Ethernet package format.
  • the Ethernet package to be transmitted data may be the first data transmission device 320 itself.
  • the completion of the Ethernet transmission may be completed before the first data transmission device 320 receives the to-be-transmitted data, that is, the data to be transmitted transmitted by the base station 310 to the first data transmission device 320 is in an Ethernet encapsulation format.
  • the GTPU message sent by the base station 310 to the first data transmission device 320 carries the Ethernet message including the data to be transmitted, that is, after the base station 310 receives the data to be transmitted from the mobile communication network, the base station 310 may first perform the Ethernet data to be transmitted. Encapsulating, and then performing GTPU encapsulation on the data to be transmitted completed by the Ethernet encapsulation, and finally transmitting the GTPU message to the first data transmission device 320. Therefore, after receiving the GTPU message, the first data transmission device 320 only needs to perform GTPU decapsulation once to send the Ethernet message in the GTPU message to the second data transmission device 330.
  • the data to be transmitted sent by the base station 310 to the first data transmission device 320 is not encapsulated by the Ethernet, so the first data transmission device 320 transmits the data to be transmitted received from the base station 310 to the second data transmission.
  • the Ethernet data to be processed needs to be encapsulated first. Specifically, the data transmitted between the first data transmission device 320 and the base station 310 is encapsulated by the GTPU. Therefore, after receiving the GTPU packet sent by the base station 310, the first data transmission device 320 will send the GTPU packet. Decapsulation is performed, and the original data to be transmitted encapsulated by the base station 310 is extracted therefrom.
  • the first data transmission device 320 performs Ethernet encapsulation on the extracted original to-be-transmitted data.
  • information such as a source MAC address and a destination MAC address of the data to be transmitted needs to be set.
  • the first data transmission device 320 may fill in its own MAC address (if the first data transmission device 320 and the AC) Deployed together, the MAC address is also the MAC address of the AC).
  • the first data transmission device 320 needs to fill in the MAC address of the target terminal 340.
  • the process of acquiring the MAC address of the target terminal 340 by the first data transmission device 320 is performed below. brief introduction.
  • the base station 310 specifically establishes a GTP tunnel for transmitting the data to be transmitted with the first data transmission device 320. Therefore, after receiving the GTPU packet containing the data to be transmitted from the base station 310, the first data transmission device 320 can query, according to the related information of the GTP tunnel, which terminal the data transmitted by the tunnel is transmitted. .
  • the first data transmission device 320 acquires the TEID of the GTP tunnel that receives the GTPU message, and then queries the local database according to the TEID to obtain which target terminal 340 corresponding to the GTP tunnel. It should be understood that the mapping relationship between the TEID of the GTP tunnel and the MAC address of the target terminal should be stored in the local database of the first data transmission device 320.
  • the data to be transmitted in the mobile communication network and the WLAN convergence scheme for example, the data to be transmitted based on the LWA technology
  • the first data transmission device 320 needs to be encapsulated in the Ethernet when performing Ethernet encapsulation.
  • a merge identifier is set, and the merge identifier is used to notify the terminal that the data to be transmitted is data that needs to be aggregated according to the PDCP protocol.
  • FIG. 5 shows a frame format of an Ethernet message including a "destination MAC address” 51, a "source MAC address” 52, and a "frame data field protocol type” 53 in its encapsulation header.
  • the destination MAC address 51 and the source MAC address 52 occupy 6 bytes, respectively, and the frame data field protocol type 53 usually occupies two bytes, and the frame data field protocol type 53 is used to indicate the data contained in the data 54 to be transmitted.
  • the first data transmission device 320 may fill in the frame data field protocol type 53 with "0x9E65", and "0x9E65" is used to represent that the data contained in the data to be transmitted 54 is an LWAAP PDU.
  • the first data transmission device 320 transmits the encapsulated Ethernet message to the target second data transmission device 330 through the Layer 2 network.
  • the CAPWAP encapsulation of the Ethernet packet is not required, thereby saving the first data transmission device.
  • the second data transmission device 330 transmits the to-be-transmitted data to the target terminal 340 according to the information in the Ethernet encapsulation header of the data to be transmitted.
  • the second data transmission device 330 receives the Ethernet carried by the first data transmission device 320 and carries the data to be transmitted. After the message, the message can be directly transmitted to the corresponding target terminal 340 according to the destination MAC in the Ethernet encapsulation header of the Ethernet message.
  • a Layer 2 network is established between the first data transmission device 320 and the second data transmission device 330 for communication, so that the Ethernet message carrying the data to be transmitted can be directly used without other encapsulation.
  • the first data transmission device 320 and the second data transmission device 330 are transmitted between the first data transmission device 320 and the second data transmission device 330.
  • the wireless local area network termination device 12 needs to perform CAPWAP encapsulation on the Ethernet message and the AP device. 13 Decapsulation of the received CAPWAP packet is required to obtain the Ethernet packet, which saves the data transmission time, improves the data transmission efficiency, and improves the user experience.
  • the first data transmission device 320 does not need to perform CAPWAP encapsulation on the Ethernet packet
  • the second data transmission device 330 does not need to perform CAPWAP decapsulation, thereby saving the first data transmission device 320 and the second data transmission device 330.
  • the processing resources enable the first data transmission device 320 and the second data transmission device 330 to better process other transactions by using the processing resources, thereby optimizing resource allocation.
  • the data transmission method provided by the foregoing embodiment reduces the data transmission time and resource occupation by omitting the process of CAPWAP encapsulation and decapsulation.
  • the first data transmission device 320 and the base station 310 still need to perform GTPU encapsulation when communicating.
  • GTPU encapsulation and decapsulation cost is not small in terms of time and resources. If these overheads are reduced, the performance of data transmission will be further improved. Therefore, the embodiment of the present disclosure proposes another data transmission scheme based on the concept of the data transmission scheme in the above embodiment, assuming that the first data transmission device 320 is a wireless local area network termination device, and the second data transmission device 330 is an access device. Point device.
  • FIG. 6 shows an architectural diagram of another data transmission system provided by an embodiment of the present disclosure.
  • the data transmission system 6 of this embodiment includes a base station 610, a wireless local area network termination device 620 and an access point device 630, a communication between the base station 610 and a mobility management entity or a serving gateway 650, a base station 610 and a target.
  • the direct communication between the terminal 640, the communication between the wireless local area network termination device 620 and the access point device 630, and the communication manner between the access point device 630 and the target terminal 640 may refer to the above embodiments or related technologies, respectively. Let me repeat.
  • the difference between this embodiment and the foregoing embodiment is that a Layer 2 network is also established between the base station 610 and the WLAN termination device 620 in this embodiment.
  • the data plane between the base station 610 and the WLAN termination device 620 uses the GTPU protocol, and the data to be transmitted sent by the base station 610 to the WLAN termination device 620 is sent through the GTP tunnel after being encapsulated by the GTPU.
  • the base station 610 and the WLAN termination device 620 similar to the use of the Layer 2 network for communication between the WLAN termination device 620 and the access point device 630, the base station 610 and the WLAN termination device 620 also use a Layer 2 network for communication. That is to say, the data to be transmitted sent by the base station 610 to the WLAN termination device 620 is already encapsulated in the data, and the Ethernet packet carrying the data to be transmitted does not need to be GTPU encapsulated.
  • the data between the base station 610 and the WLAN termination device 620 is transmitted through the Layer 2 network, and is still controlled by the Xw-C protocol on the control panel.
  • the data transmission method in this embodiment will be described below with reference to the interaction diagram in FIG. As shown in FIG. 7, the data transmission method of this embodiment includes the following steps S701 to S704.
  • the base station 610 performs Ethernet encapsulation on the data to be transmitted.
  • the base station 610 After the base station 610 receives the data to be transmitted to the target terminal 640 from the mobile communication network (such as the LTE network or the like), if it is required to transmit based on the LWA technology, the base station 610 first splits the data at the PDCP layer to generate an LWAAP PDU. data. Then, in order to transmit the data in the Layer 2 network, the base station 610 performs Ethernet encapsulation on the data to be transmitted to form an Ethernet message. For the frame format of the Ethernet packet, as shown in FIG.
  • the base station 610 needs to write "0x9E65" indicating that the data to be transmitted is LWAAP PDU data at the frame data field protocol type, that is, The merge identifier is added and set in the Ethernet encapsulation header.
  • the base station 610 can fill in its own MAC address, and for the destination MAC address, the base station 610 can directly fill in the MAC address of the target terminal 640.
  • the base station 610 does not set the destination MAC address to the MAC address of the WT device 620. This is mainly because the base station 610 and the WT device 620 communicate through the Layer 2 network in this embodiment. Therefore, the specific relationship between the two is not established.
  • the GTP tunnel is used to transmit the data of the target terminal 640. Therefore, if the MAC address of the target terminal 640 is not directly filled in as the destination MAC address, the WT device 620 may not be able to understand the packet after receiving the Ethernet packet. Who should be transferred to.
  • the base station 610 replaces the WT device 620 for Ethernet encapsulation. Since the base station 610 acquires data that needs to be sent to the target terminal 640 from the mobile communication network, it can directly know which destination the data needs to be directed to. The 640 is sent by the terminal 640. Therefore, when the base station 610 performs Ethernet encapsulation on the data to be transmitted, it does not need to query the MAC address of the target terminal 640 according to the TEID as the WT device 620 performs Ethernet encapsulation, which saves the time of the Ethernet encapsulation. Increased the efficiency of the Ethernet package.
  • the WLAN termination device 620 receives the Ethernet packet that is sent by the base station 610 and carries the data to be transmitted through the Layer 2 network.
  • the base station 610 After the base station 610 performs the Ethernet packet to be transmitted to obtain the Ethernet packet, the base station 610 sends the Ethernet packet to the WT device 620 through the pre-established Layer 2 network with the WT device 620. Therefore, the WT device 620 passes the Layer 2 layer.
  • the network can receive the Ethernet message carrying the data to be transmitted.
  • the WLAN termination device 620 forwards the Ethernet message directly to the access point device 630.
  • the WT device 620 does not perform Ethernet encapsulation on the data to be transmitted, nor does it perform CAPWAP encapsulation on the data to be transmitted, it only serves as a forwarding device to forward the Ethernet packet from the base station 610. After receiving the Ethernet packet, the WT device 620 obtains the destination MAC address information from the Ethernet encapsulation header of the Ethernet packet, and then determines, according to the destination MAC address information, from which port the packet should be sent to which access. Point device 630.
  • one or more access point devices 630 may be accessed under one WT device 620, and one or more target terminals 640 may be accessed under one access point device 630, thus, when one After receiving the data that needs to be sent to a target terminal 640, the WT device 620 should be able to know how to transmit the data to the corresponding target terminal 640, that is, the WT device 620 should store the access to each of the next.
  • Path information of each target terminal 640 of the access point device 630 The following describes the process of the WT device 620 recording the path information of the target terminal 640 in the solution of the mobile communication network and the wireless local area network. For details, refer to FIG. 8. As shown in FIG. 8, the WT device 620 records the target terminal 640.
  • the process of the path information includes the following steps S801 to S803.
  • the base station 610 sends the association information of the target terminal 640 to the wireless local area network termination device 620.
  • the base station 610 When the base station 610 needs the WT device 620 to cooperate with itself to implement the data transmission of the mobile communication network and the wireless local area network, the base station 610 informs the WT device 620 of the relevant target terminal 640 by using the associated information. Therefore, in the association information, the base station 610 indicates to the WT device 620, which target terminals 640 will access the access point device 630 under the WT device 620, so as to facilitate the fused transmission between the mobile communication network and the wireless local area network.
  • the WLAN termination device 620 learns the path information for forwarding the information to the target terminal 640 through the access point device 630.
  • the WT device 620 After the target terminal 640 mentioned in the association information is accessed to the wireless local area network by the access point device 630, the WT device 620 acquires the information related to the target terminal 640 by MAC address learning. After the WT device 620 knows that the target terminal 640 accesses the information of the wireless local area network, it needs to determine path information such as an interface used by the access point device 630 to which the target terminal 640 is connected.
  • the wireless local area network termination device 620 records path information for performing information forwarding to the target terminal 640.
  • the WT device 620 After acquiring the path information of the data transmitted to the target terminal 640, the WT device 620 stores the path information in association with the MAC address of the target terminal 640 for later use in transmitting the Ethernet message.
  • the access point device 630 forwards the Ethernet message to the target terminal 640 according to the information in the Ethernet encapsulation header of the Ethernet packet.
  • the access point device 630 After receiving the Ethernet packet, the access point device 630 directly transmits the message to the corresponding target terminal 640 according to the destination MAC information in the Ethernet encapsulation header of the Ethernet message.
  • the target terminal 640 After the target terminal 640 receives the Ethernet packet, it is determined whether the merged identifier exists in the Ethernet encapsulation header of the Ethernet packet.
  • the target terminal 640 is mainly configured to determine a frame in the Ethernet encapsulation header of the Ethernet packet. Whether the data field protocol type is "0x9E65". If the "frame data field protocol type" in the Ethernet packet header of the Ethernet packet is determined to be "0x9E65", the data carried in the Ethernet packet is aggregated and the "frame” in the Ethernet encapsulation header of the Ethernet packet is determined. The data field protocol type is not 0x9E65, indicating that the data carried in the packet is not split according to PDCP and does not need to be merged.
  • the WT device 620 and the access point device 630 use a Layer 2 network for communication, but the CAPWAP package when the data is transmitted between the WT device 620 and the access point device 630 is omitted. And decapsulation, and also allows the WT device 620 and the base station 610 to communicate with each other using a Layer 2 network, further omitting the GTPU encapsulation when the data is transmitted between the WT device 620 and the base station 610.
  • the base station 610, the WT device 620, and the access point device 630 directly use the Ethernet encapsulation format for data transmission, which saves processing resources and processing time of other encapsulation and decapsulation, and greatly improves data transmission efficiency. The degree of optimization with resource configuration.
  • the Ethernet encapsulation is completed on the base station 610 side, and the base station 610 does not need to perform a complicated query as the WT device 620 to obtain the MAC address of the target terminal 640. Therefore, the present invention
  • the Ethernet encapsulation by the base station 610 in the embodiment further improves the efficiency of the Ethernet encapsulation and reduces the resource consumption in the Ethernet encapsulation process.
  • FIG. 9 is a schematic structural diagram of a first data transmission apparatus provided in an embodiment of the present disclosure, where the first data transmission apparatus can be used to implement a data transmission method in the foregoing embodiment, the first data transmission apparatus
  • the architecture diagram of the data transmission system is shown in Figure 3, and will not be described here.
  • the first data transmission device 320 in this embodiment includes a first receiving unit 322 and a first data transmitting unit 324, where the first receiving unit 322 is configured to receive, from the base station, a to-be-sent to the target terminal. Data to be transmitted, and the first data sending unit 324 is configured to send the data to be transmitted to the second data transmission device in an Ethernet encapsulation format through the Layer 2 network established between the second data transmission device and the second data transmission device.
  • the transmitting device transmits the data to the target terminal.
  • the first data transmission device in this embodiment may be a wireless local area network termination device, and the second data transmission device may be an access point device.
  • the networking mode between the first receiving unit 322 and the base station can refer to the related art.
  • the data to be transmitted is sent to the first receiving unit 322 in the form of a 6TPU message.
  • the base station transmits the GTPU message through the GTP tunnel established between the first receiving unit 322 and the device. If the base station uses the LWA technology to perform data transmission to the target terminal, after receiving all the data from the LTE network, the base station needs to split the data according to the PDCP protocol, thereby obtaining LWAAP PDU data.
  • the data transmission method provided in this embodiment is not limited to a scenario for merging an LTE network with a WLAN network.
  • the data to be transmitted sent by the base station to the first receiving unit 322 is not necessarily the split data.
  • the base station may directly follow the third option, and then all The data to be transmitted is sent to the first receiving unit 322, and is transmitted by the first data transmitting unit 324 of the first data transmitting device 320 to the target terminal through the wireless local area network.
  • the base station can receive data to be transmitted from various mobile communication networks, for example, can receive data to be transmitted from a 4G, 5G, 6G network or even a higher-generation mobile communication network that supports convergence with a wireless local area network, this embodiment
  • the first data transmission device 320 provided also applies to these situations.
  • the first data sending unit 324 transmits the data to be transmitted to the second data transmission device through the wireless local area network where the first data transmission device 320 is located. It should be understood that the first data sending unit 324 establishes a Layer 2 network to communicate with the second data transmitting device, and the data transmitted between the two is encapsulated by the Ethernet, that is, the first data sending unit. 324 The data to be transmitted sent to the access point device is in the Ethernet package format.
  • the Ethernet encapsulation of the data to be transmitted can be completed by the first data transmission device 320 itself.
  • the Ethernet encapsulation is completed before the first receiving unit 322 receives the data to be transmitted, that is, the data to be transmitted transmitted by the base station to the first receiving unit 322 is in an Ethernet encapsulation format.
  • the GTPU packet sent by the base station to the first receiving unit 322 carries the Ethernet packet containing the data to be transmitted, that is, after the base station receives the data to be transmitted from the mobile communication network, the base station may first perform the Ethernet encapsulation on the transmission data, and then The GTPU encapsulation is performed on the data to be transmitted, and finally the GTPU packet is sent to the first receiving unit 322. Therefore, after receiving the GTPU message, the first receiving unit 322 only needs to perform GTPU decapsulation once to send the Ethernet message in the GTPU message to the second data transmission device.
  • the data to be transmitted sent by the base station to the first receiving unit 322 is not encapsulated by the Ethernet, so before the first data transmitting unit 324 transmits the data to be transmitted received from the base station to the second data transmission device,
  • the first data transmission device 320 needs to perform Ethernet encapsulation on the transmission data first. Therefore, the first data transmission device 320 in this embodiment further includes a data processing unit 326, please refer to FIG. Specifically, since the data transmitted between the first receiving unit 322 and the base station is encapsulated by the GTPU, after the first receiving unit 322 receives the GTPU message sent by the base station, the data processing unit 326 sends the GTPU message to the GTPU message.
  • the data processing unit 326 then performs Ethernet encapsulation on the extracted original to-be-transmitted data.
  • information such as a source MAC address and a destination MAC address of the data to be transmitted needs to be set.
  • the data processing unit 326 may fill in the MAC address of the first data transmission device 320 (if the first data transmission device) 320 is deployed with the AC, and the MAC address is also the MAC address of the AC).
  • the data processing unit 326 needs to fill in the MAC address of the target terminal.
  • the process of acquiring the MAC address of the target terminal by the data processing unit 326 is briefly described below.
  • the base station specifically establishes a GTP tunnel for transmitting the data to be transmitted with the first receiving unit 322. Therefore, after the first receiving unit 322 receives the GTPU packet containing the data to be transmitted from the base station side, the data processing unit 326 can query, according to the related information of the GTP tunnel, which terminal the data transmitted by the tunnel is. Transmission.
  • the data processing unit 326 obtains the TEID of the GTP tunnel that receives the GTPU message, and then queries the local database according to the TEID to obtain which target terminal corresponding to the GTP tunnel. It should be understood that the mapping relationship between the TEID of the GTP tunnel and the MAC address of the target terminal should be stored in the local database of the first data transmission device 320.
  • the data to be transmitted in the mobile communication network and the WLAN convergence scheme for example, the data to be transmitted based on the LWA technology
  • the data processing unit 326 needs to set one in the Ethernet encapsulation header when performing Ethernet encapsulation.
  • the merge identifier is used to inform the terminal that the data to be transmitted is data that needs to be aggregated according to the PDCP protocol.
  • FIG. 5 shows a frame format of an Ethernet message including a "destination MAC address” 51, a "source MAC address” 52, and a "frame data field protocol type” 53 in its encapsulation header.
  • the destination MAC address 51 and the source MAC address 52 occupy 6 bytes, respectively, and the frame data field protocol type 53 usually occupies two bytes, and the frame data field protocol type 53 is used to indicate the data contained in the data 54 to be transmitted.
  • the data processing unit 326 may fill in the frame data field protocol type 53 with "0x9E65", and "0x9E65" is used to represent that the data contained in the data to be transmitted 54 is LWAAP PDU data.
  • Cyclic Redundancy Check Code (CRC)" 55 is also included in the Ethernet message, which is used by the receiving end (in this embodiment, the target terminal) to detect the received data.
  • the first data sending unit 324 sends the encapsulated Ethernet message to the second data transmission device through the Layer 2 network.
  • the data processing unit 326 since the data transmission between the first data transmitting unit 324 and the second data transmission device can directly go through the Layer 2 network, the data processing unit 326 does not need to perform CAPWAP encapsulation on the Ethernet packet, thereby saving the first.
  • FIG. 11 is a schematic structural diagram of a second data transmission apparatus provided in an embodiment of the present disclosure, which may be used to implement a data transmission method in the foregoing embodiment, the second data transmission apparatus
  • the architecture diagram of the data transmission system is shown in Figure 3, and will not be described here.
  • the second data transmission device 330 in this embodiment includes a second receiving unit 332 and a second data transmitting unit 334, and the second receiving unit 332 is configured to establish a second relationship with the first data transmission device.
  • the layer network receives the data to be transmitted sent by the first data transmission device in the Ethernet encapsulation format, and the second data sending unit 334 is configured to transmit the data to be transmitted to the target terminal according to the information in the Ethernet encapsulation header of the data to be transmitted.
  • the second receiving unit 332 receives the destination MAC address of the data to be transmitted, and the second receiving unit 332 receives the Ethernet packet carrying the data to be transmitted transmitted by the first data transmission device. Then, the second data sending unit 334 can directly transmit the message to the corresponding target terminal according to the destination MAC address in the Ethernet encapsulation header of the Ethernet packet, without first performing the CAPWAP decapsulation process.
  • the Ethernet message carrying the data to be transmitted can be directly transmitted in the first data without performing other encapsulation.
  • the device 320 is configured to transmit between the device and the second data transmission device 330, so that the first data transmission device 320 needs to perform CAPWAP encapsulation on the Ethernet packet, and the second data transmission device 330 needs to decapsulate the received CAPWAP packet.
  • the problem of Ethernet packets saves data transmission time, improves data transmission efficiency, and improves user experience.
  • the first data transmission device 320 does not need to perform CAPWAP encapsulation on the Ethernet packet, and the second data transmission device 330 does not need to perform CAPWAP decapsulation, the first data transmission device 320 and the second data transmission device 330 are saved. Processing the resources enables the first data transmission device 320 and the second data transmission device 330 to better process other transactions by using these processing resources, thereby optimizing resource allocation.
  • the WLAN termination device 620 may include the first receiving unit and the first data transmitting unit as shown in FIG. 9, and the access point device 630 is shown in FIG. Similarly, the second receiving unit and the second data transmitting unit, where the wireless local area network terminating device 620 and the access point device 630 are used to implement another data transmission method in the foregoing embodiments.
  • the base station 610 After the base station 610 receives data to be transmitted to the target terminal from the mobile communication network (such as an LTE network or the like), if it is required to transmit based on the LWA technology, the base station 610 first splits the data at the PDCP layer to generate LWAAP PDU data. . Then, in order to transmit the data in the Layer 2 network, the base station 610 performs Ethernet encapsulation on the data to be transmitted to form an Ethernet message. For the frame format of the Ethernet packet, as shown in FIG.
  • the base station 610 needs to write "0x9E65" indicating that the data to be transmitted is LWAAP PDU data at the frame data field protocol type, that is, The set encapsulation identifier is added to the Ethernet encapsulation header.
  • the base station 610 can fill in its own MAC address, and for the destination MAC address, the base station 610 can directly fill in the MAC address of the target terminal.
  • the base station 610 does not set the destination MAC address to the MAC address of the WT device 620. This is mainly because the base station 610 and the first receiving unit of the WT device 620 communicate through the Layer 2 network in this embodiment.
  • a 6TP tunnel dedicated to transmitting data for a target terminal is not established. Therefore, if the MAC address of the target terminal is not directly filled in as the destination MAC address, the first receiving unit may not be able to receive the Ethernet packet. Know who the message should be transmitted to.
  • the base station 610 instead of the WT device 620 for Ethernet encapsulation has the advantage that since the base station 610 acquires data that needs to be sent to the target terminal from the mobile communication network, it can directly know which terminal the data needs to be sent to. Therefore, when the base station 610 performs Ethernet encapsulation on the data to be transmitted, it does not need to query the MAC address of the target terminal according to the TEID as the WT device 620, which saves the time of the Ethernet encapsulation and improves the efficiency of the Ethernet encapsulation.
  • the base station 610 After the base station 610 is configured to complete the Ethernet packet to be transmitted, the base station 610 sends the Ethernet packet to the first receiving unit through a pre-established Layer 2 network with the first receiving unit, so the WT device 620 The first receiving unit can receive the Ethernet message carrying the data to be transmitted through the Layer 2 network.
  • the WT device 620 does not perform Ethernet encapsulation on the data to be transmitted, nor does it perform CAPWAP encapsulation on the data to be transmitted, it only serves as a forwarding device to forward the Ethernet packet from the base station 610.
  • the first data sending unit obtains the destination MAC address information from the Ethernet encapsulation header of the Ethernet packet, and then determines, according to the destination MAC address information, which port the packet should be sent from. Which access point device 630 is sent to.
  • one or more access point devices 630 can be accessed under one WT device 620, and one or more terminals can be accessed under one access point device 630, thus, when a WT device After receiving the data that needs to be sent to a certain terminal, the 620 should be able to know how to transmit the data to the corresponding target terminal. That is, the WT device 620 should store the access point device 630. Path information of each terminal. Therefore, in some embodiments, as shown in FIG. 12, the wireless local area network termination device 620 includes a path recording unit 626.
  • the WLAN termination device 620 includes a first receiving unit 622, a first data transmitting unit 624, and a path recording unit 626.
  • the process of recording the path information of the terminal by the path recording unit 626 in the scheme in which the mobile communication network and the wireless local area network are integrated will be described below.
  • the base station 610 When the base station 610 needs the WT device 620 to cooperate with itself to implement the data transmission of the mobile communication network and the wireless local area network, the base station 610 informs the path recording unit 626 of the relevant target terminals by using the associated information. Therefore, in the association information, the base station 610 indicates to the path recording unit 626 which terminals will access the access point device 630 under the WT device 620 in order to implement the converged transmission between the mobile communication network and the wireless local area network.
  • the path recording unit 626 can learn this information by actively inquiring to the access point device 630, or when the target terminal is connected. After entering a certain target access point device 630, the access point device 630 can actively report this information to the path recording unit 626. After the path recording unit 626 learns that the target terminal accesses the information of the wireless local area network, it needs to determine the path information such as the interface used by the access point device 630 to which the target terminal is connected.
  • the path recording unit 626 After acquiring the path information for transmitting data to the target terminal, the path recording unit 626 stores the path information in association with the MAC address of the target terminal for later use in transmitting the Ethernet message.
  • the second data sending unit After the second receiving unit of the access point device 630 receives the Ethernet packet, the second data sending unit directly transmits the packet to the corresponding target terminal according to the destination MAC address information in the Ethernet encapsulation header of the Ethernet packet. .
  • the target terminal After the target terminal receives the Ethernet packet, it is determined whether the merged identifier exists in the Ethernet encapsulation header of the Ethernet packet. In this embodiment, the target terminal is mainly used to determine the frame data field in the Ethernet encapsulation header of the Ethernet packet. Whether the protocol type is "0x9E65".
  • the data carried in the Ethernet packet is aggregated and the "frame” in the Ethernet encapsulation header of the Ethernet packet is determined.
  • the data field protocol type is not 0x9E65, indicating that the data carried in the packet is not split according to PDCP and does not need to be merged.
  • the WT device 620 and the access point device 630 provided in this embodiment not only support Layer 2 networking communication between the WT device 620 and the access point device 630, but also omitting data transmission between the WT device 620 and the access point device 630.
  • the CAPWAP is encapsulated and decapsulated, and the WT device 620 and the base station 610 are also used to communicate with each other, and the GTPU encapsulation when the data is transmitted between the WT device 620 and the base station 610 is further omitted.
  • the base station 610, the WT device 620, and the access point device 630 directly use the Ethernet encapsulation format for data transmission, which saves processing resources and processing time of other encapsulation and decapsulation, and greatly improves data transmission efficiency.
  • the degree of optimization with resource configuration is not only support Layer 2 networking communication between the WT device 620 and the access point device 630, but also omitting data transmission between the WT device 620 and the access point device 630.
  • the Ethernet encapsulation is performed on the base station 610 side, and the base station 610 does not need to perform a complex query as the WT device 620 to obtain the MAC address of the target terminal. Therefore, in this embodiment, the base station 610 performs the Ethernet.
  • the package further enhances the efficiency of the Ethernet package and reduces the resource consumption in the Ethernet packaging process.
  • FIG. 13 is a schematic diagram showing the hardware structure of a base station provided in an embodiment of the present disclosure.
  • the base station 13 includes a first processor 131 and a first communication device 132, wherein the first communication device 132 can
  • the mobile communication network such as an LTE network
  • the base station 13 transmits data to the target terminal through the mobile communication network and the wireless local area network fusion technology
  • the first processor 131 needs to be in the slave mobile communication network according to the PDCP protocol.
  • the received data is split and processed to obtain LWAAP PDU data.
  • FIG. 14 is a block diagram showing the hardware structure of a wireless local area network terminating device provided in an embodiment of the present disclosure.
  • the wireless local area network termination device 14 includes a second processor 141, a second communication device 142, and a second memory 143.
  • the WLAN termination device 14 is implemented by the second communication device 142 under the control of the second processor 141 to implement the functions of the first receiving unit and the first data transmitting unit in the first data transmission device in the foregoing embodiment.
  • the first processor 131 needs to perform GTPU encapsulation on the LWAAP PDU data.
  • the first communication device 132 is then controlled to establish a GTP tunnel with the wireless local area network termination device 14 to transmit the GTPU message to the wireless local area network termination device 14.
  • the second communication device 142 receives the GTPU message carrying the data to be transmitted that needs to be sent to the target terminal by using the GTP tunnel with the base station 13, and then decapsulates the GTPU message by the second processor 141, and extracts the GTPU message. LWAAP PDU data.
  • the second processor 141 then performs Ethernet encapsulation on the LWAAP PDU data.
  • the second processor 141 needs to obtain the MAC address of the target terminal as the destination MAC address in the Ethernet encapsulation header of the Ethernet packet. Therefore, the second processor 141 needs to acquire the TEID of the corresponding GTP tunnel, and then The corresponding destination MAC address is searched according to the mapping relationship between the TEID pre-stored by the second memory 143 and the MAC address of the terminal.
  • the second processor 141 determines how the Ethernet message should be sent to the correct target access point device according to the mapping relationship between the path information and the MAC address stored in the second memory 143.
  • the first processor 132 needs to perform Ethernet encapsulation on the LWAAP PDU data, and the encapsulated Ethernet message passes the first communication.
  • the device 132 transmits to the wireless local area network termination device 14.
  • the second processor 141 may directly obtain the destination MAC information from the Ethernet encapsulation header, and then determine according to the mapping relationship between the path information and the MAC address stored in the second memory 143. How should the Ethernet message be sent to the correct target access point device, and finally, the second processor 141 controls the second communication device 142 to forward the Ethernet message to the corresponding target access point according to the path information determined by itself. device.
  • the access point device 15 is a schematic diagram of a hardware mechanism of an access point device provided in an embodiment of the present disclosure.
  • the access point device 15 includes a third processor 151, a third communication device 152, and a third. Memory 153.
  • the access point device 15 implements the functions of the second receiving unit and the second data transmitting unit in the second data transmitting device in the foregoing embodiment under the control of the third processor 151 by the third communication device 152.
  • the data received by the third communication device 152 from the WLAN termination device 14 is always encapsulated in Ethernet, so the third processor 151 can directly rely on the Ethernet.
  • the destination MAC address information in the packet forwards the packet to the corresponding target terminal. It can be understood that the mapping relationship between the MAC address of the terminal and the forwarding path should be stored in the third memory 153, for example, from which port the data of a certain terminal should be sent or the like.
  • the base station shown in FIG. 13 , the WLAN termination device shown in FIG. 14 , and the access point device shown in FIG. 15 support the data transmission scheme provided in the foregoing embodiment, which can avoid multiple encapsulation and decapsulation in the data transmission process.
  • the processing saves the data transmission time, improves the data transmission efficiency, improves the user experience, and saves the processing resources of the communication system, which is beneficial to the realization of resource optimization configuration.
  • the present disclosure further provides a data transmission system as shown in FIG. 16.
  • the data transmission system 16 includes a base station 161, a wireless local area network termination device 162, and an access point device. 163.
  • the base station 161 and the WT device 162 use a Layer 2 network for communication
  • the WT device 162 and the access point device 163 use CAPWAP for communication.
  • the base station 161 sends the data to be transmitted to the WT device 162, the data is transmitted in the Ethernet encapsulation format through the pre-established Layer 2 network. Since the GTP tunnel is not established between the base station 161 and the WT device 162, the WT device 162 may not be able to query the MAC address of the target terminal 164 through the TEID of the GTP tunnel after receiving the Ethernet packet carrying the data to be transmitted. Therefore, when the base station 161 performs Ethernet encapsulation on the data to be transmitted, the destination MAC address in the Ethernet encapsulation header is directly set to the MAC address of the target terminal 164.
  • the WT device 162 After the WT device 162 receives the Ethernet packet sent by the base station 161, it sends the Ethernet packet to the access point device 163 through the CAPWAP. Therefore, the WT device 162 needs to perform another CAPWAP encapsulation on the Ethernet packet. After the encapsulation is completed, the WT is configured. The device 162 sends the CAPWAP message to the access point device 163.
  • the access point device 163 After receiving the CAPWAP packet, the access point device 163 needs to perform CAPWAP decapsulation on the packet, extract the Ethernet packet from the packet, and then send the packet to the corresponding destination MAC address in the Ethernet encapsulation header of the Ethernet packet.
  • Target terminal 164 After receiving the CAPWAP packet, the access point device 163 needs to perform CAPWAP decapsulation on the packet, extract the Ethernet packet from the packet, and then send the packet to the corresponding destination MAC address in the Ethernet encapsulation header of the Ethernet packet.
  • the data to be transmitted is transmitted between the WT device 162 and the access point device 163, a CAPWAP encapsulation is still required.
  • the base station 161 and the WT device 162 use Layer 2 network communication, Therefore, the GTPU encapsulation is not required when the data to be transmitted is transmitted between the base station 161 and the WT device 162.
  • the number of times of encapsulation and decapsulation is reduced, and the data transmission time is saved. Process resources with forwarding.
  • the base station 161 since the Ethernet encapsulation is completed by the base station 161, and the base station 161 acquires data that needs to be transmitted to the target terminal from the mobile communication network, it can directly know which terminal needs to be sent to the data, and therefore, the base station 161 is When the Ethernet data to be transmitted is encapsulated, the MAC address of the target terminal does not need to be queried, which saves the time of the Ethernet encapsulation and improves the efficiency of the Ethernet encapsulation.
  • modules or steps of the foregoing embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • they may be implemented by program code executable by a computing device such that they may be stored in a computer storage medium (ROM/RAM, disk, optical disk) by a computing device, and at some
  • the steps shown or described may be performed in an order different than that herein, or they may be separately fabricated into individual integrated circuit modules, or a plurality of modules or steps may be fabricated into a single integrated circuit module. . Therefore, the present disclosure is not limited to any specific combination of hardware and software.
  • the storage medium can store a computer program executed by a first data transmission device (eg, a processor in a WT device), processing in the WT device
  • Executing the computer program in the storage medium may implement the following steps of the data transmission method: receiving, from the base station, data to be transmitted that needs to be sent to the target terminal; and passing the data to be transmitted through the Layer 2 network established between the data transmission device and the second data transmission device And transmitting to the second data transmission device in an Ethernet encapsulation format for the second data transmission device to transmit data to the target terminal, and the second data transmission device may be an access point device.
  • the computer program may further perform the following steps: before receiving the data to be transmitted that needs to be sent to the target terminal from the base station, receiving association information of the target terminal sent by the base station, and the associated information of the target terminal is used to notify the wireless local area network termination device that the connection is received.
  • the target terminal entering the mobile communication network is about to access the wireless local area network where the wireless local area network termination device is located.
  • the computer program may further perform the steps of: receiving, by the base station, the data to be transmitted through the Layer 2 network established between the second data transmission device and the second data transmission device in an Ethernet encapsulation format
  • the data to be transmitted is encapsulated in Ethernet.
  • Performing Ethernet encapsulation on the data to be transmitted received from the base station may include: obtaining a physical address of the target terminal according to the tunnel endpoint identifier of the receiving tunnel, where the receiving tunnel is when the first data transmission device receives the data to be transmitted from the base station.
  • the general packet radio service technology tunnel used is encapsulated in Ethernet for the data to be transmitted based on the physical address of the target terminal.
  • Performing the Ethernet encapsulation on the data to be transmitted received from the base station may further include: setting a merge identifier in the Ethernet encapsulation header of the data to be transmitted, where the merge identifier is used to notify the target terminal that the data to be transmitted needs to be merged according to the packet data convergence protocol.
  • Receiving the data to be transmitted that needs to be sent to the target terminal from the base station includes: receiving, by the base layer pre-established with the base station, the data to be transmitted after being encapsulated by the base station.
  • Transmitting the data to be transmitted to the second data transmission device in the Ethernet encapsulation format by using the Layer 2 network established between the data transmission device and the second data transmission device includes: obtaining the physical address of the target terminal from the Ethernet encapsulation header set by the base station for the data to be transmitted And transmitting the data to be transmitted to the corresponding second data transmission device according to the physical address of the target terminal.
  • the storage medium may store a computer program for execution by a second data transmission device (such as a processor in an access point device), and the processor of the access point device executes a computer program in the storage medium to implement a data transmission method.
  • a second data transmission device such as a processor in an access point device
  • the processor of the access point device executes a computer program in the storage medium to implement a data transmission method. The following steps: receiving, by the layer 2 network established with the first data transmission device, the data to be transmitted sent by the first data transmission device in the Ethernet encapsulation format; transmitting the data to be transmitted according to the information in the Ethernet encapsulation header of the data to be transmitted Give the target terminal.
  • the storage medium provided by the embodiment of the present disclosure may store a computer program for implementing a data transmission method for supporting establishment of a Layer 2 network to communicate between the first data transmission device and the second data transmission device, such that the Ethernet carrying the data to be transmitted
  • the packet can be directly transmitted between the first data transmission device and the second data transmission device without using other encapsulation, so that the first data transmission device in the prior art needs to perform CAPWAP encapsulation on the Ethernet packet, and at the same time
  • the data transmission device needs to decapsulate the received CAPWAP packet to obtain the Ethernet packet, saves the data transmission time, improves the data transmission efficiency, and improves the user experience.

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Abstract

本公开的实施例提供一种数据传输方法、一种数据传输系统及一种数据传输装置，所述数据传输方法中，第一数据传输装置从基站处接收需要发送给目标终端的待传输数据，所述第一数据传输装置将所述待传输数据通过与第二数据传输装置之间建立的二层网络，以以太封装格式发送给所述第二数据传输装置，以供该第二数据传输装置将所述数据传输给所述目标终端。

Description

数据传输方法、系统及传输装置 技术领域
本公开涉及通信领域，尤其涉及数据传输方法、系统及传输装置。
背景技术
如今，在无线通信所依赖的频谱资源日益稀缺的情况下，利用免许可频段来分流长期演进系统(Long Term Evolution，LTE)网络流量已经成为了缓解移动通信网络流量压力的重要手段。在第三代合作伙伴计划发行的第13个版本(3rd 6eneration Partnership Project Release 13，36PP R13)标准中，正式引入了LTE与无线局域网(Wireless Local Area Networks，WLAN)融合的LTE-WLAN聚合(LWA)技术。LWA技术通过将来自LTE网络中的数据分流到WLAN网络中进行传输，不仅能够缓解LTE网络的传输压力，也能够极大地提升数据传输效率，所以，目前LWA技术已经成为了LTE网络和WLAN网络融合领域的一个重要的技术热点。
LWA技术中，基站从服务网关处接收到需要发送给某一终端的下行数据之后，其会将部分下行数据传输给无线局域网终结(WLAN Termination，WT)设备，以便通过无线局域网将这部分下行数据传输给目标终端，WT设备接收到需要传输给目标终端的数据后，会发送给无线接入点(Access Point，AP)设备，由AP设备将数据传输给对应的目标终端。在一些LWA数据传输方案当中，WT设备与AP设备在传输数据时，采用高层的无线接入点的控制和配置协议(Control And Provisioning of Wireless Access Points Protocol Specification，CAPWAP)进行通信议，因此，WT设备需要按照协议的规定将待传输的数据进行封装，然后才能发送给AP设备。由于AP设备与目标终端之间的通信并不是根据CAPWAP协议进行的，因此， AP设备接收到经CAPWAP封装的下行数据之后，先对其进行对应的解封装处理，然后再发送给目标终端。
发明内容
本公开的实施例提供一种数据传输方法，包括：第一数据传输装置从基站处接收需要发送给目标终端的待传输数据；所述第一数据传输装置将所述待传输数据通过与第二数据传输装置之间建立的二层网络，以以太封装格式发给所述第二数据传输装置，以供该第二数据传输装置将所述数据传输给所述目标终端。
本公开的实施例还提供一种数据传输方法，包括：第二数据传输装置通过与第一数据传输装置之间建立的二层网络接收所述第一数据传输装置以以太封装格式发送的待传输数据；所述第二数据传输装置根据所述待传输数据的以太封装头中的信息将所述待传输数据传输给目标终端。
本公开的实施例还提供一种数据传输装置，包括：接收单元，用于从基站处接收待发送给目标终端的待传输数据；数据发送单元，用于通过二层网络以以太封装格式发送所述待传输数据，以供接收到该待传输数据的装置将所述数据传输给所述目标终端。
本公开的实施例还提供一种数据传输装置，包括：接收单元，用于通过二层网络接收以以太封装格式发送的待传输数据；数据发送单元，用于根据所述待传输数据的以太封装头中的信息将所述待传输数据传输给目标终端。
本公开的实施例还提供一种数据传输系统，包括基站、第一数据传输装置以及第二数据传输装置，所述第一数据传输装置与所述第二数据传输装置之间通过二层网络进行通信，所述第一数据传输装置用于从所述基站处接收需要发送给目标终端的待传输数据，并将所述待传输数据通过二层网络以以太封装格式发送给所述第二数据传输装置，以供所述第二数据传输装置将所述数据传输给所述目标终端。
本公开的实施例还提供一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于执行前 述的任一数据传输方法或用于实现前述的任一数据传输装置。
附图说明
图1为一种LWA系统架构的示意图；
图2为基于LWA技术的一种数据传输流程的示意图；
图3为本公开的实施例中提供的一种数据传输系统的架构图；
图4为本公开的实施例中提供的一种数据传输方法的流程图；
图5为本公开的实施例中的以太封装的以太帧格式示意图；
图6为本公开的实施例中提供的另一种数据传输系统的架构图；
图7为本公开的实施例中提供的另一种数据传输方法的流程图；
图8为本公开的实施例中提供的无线局域网终结设备记录终端路径信息的流程图；
图9为本公开的实施例中提供的第一数据传输装置的一种结构示意图；
图10为本公开的实施例中提供的第一数据传输装置的另一种结构示意图；
图11为本公开的实施例中提供的第二数据传输装置的一种结构示意图；
图12为本公开的实施例中提供的一种无线局域网终结设备的结构示意图；
图13为本公开的实施例中提供的一种基站的硬件结构示意图；
图14为本公开的实施例中提供的一种无线局域网终结设备的硬件结构示意图；
图15为本公开的实施例中提供的一种接入点设备的硬件结构示意图；
图16为本公开的实施例中提供的一种数据传输系统的架构图。
具体实施方式
下面结合附图对本公开的实施例作进一步详细说明。
在对本公开提供的数据传输方案进行介绍之前，先结合图1与 图2对LWA系统的架构与实施原理进行简单阐述。
图1所示为一种LWA系统架构的示意图，如图1所示，基站11与WT设备12分离，在一些实施方式中，无线局域网终结设备12可以和无线控制器(Access Controller，AC)部署在一起。以LTE网络为例，终端14可以直接通过4G信号与基站11进行通信，但同时，终端14也可以通过AP设备13接入无线局域网终结设备12所在的无线局域网。
基站11从服务网关(Serving Gate Way，S-GW)10处接收到需要传输给终端14的数据后，可以直接通过4G信号传输给终端14。可以理解的是，向基站11发送待传输数据的设备也可以视作移动管理实体(Mobility Management Entity，MME)。为了缓解LTE网络的传输压力，基站11可以将待传输数据中的一部分分流到无线局域网进行传输，该情况下，基站11将一部分数据传输给无线局域网终结设备12，由无线局域网终结设备12通过无线接入点13发送给终端14，无线局域网终结设备12与基站11之间通过Xw(Xw是指基站与WT之间的接口)协议进行通信。
下面结合图2所示出的交互图对基于图1所示的LWA系统构架的一种LWA数据传输方案进行介绍，如图2所示，该LWA数据传输方案包括以下步骤S201至S208。
S201、基站对下行数据进行拆分。
根据分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)，基站在PDCP层对用户的下行数据进行拆分，生成LWA适应协议(LWA Adaptation Protocol，LWAAP)的协议数据单元(Protocol Data Unit，PDU)数据，LWAAP PDU数据即为用户下行数据中由基站分配后需要借助WLAN网络资源进行传输的数据。
S202、基站对LWAAP PDU数据进行GTPU封装以获得GTPU报文。
GPRS隧道协议(GPRS Tunelling protocol，GTP)用来在GPRS核心分组网中封装传输数据，GTP协议分为信令控制协议(GTPC)、封装用户数据协议(GTPU)和计费相关的协议(GTP’协议)。
S203、基站将GTPU报文发送给WT设备。
通常，基站与WT设备之间会通过GTP隧道来传输封装后的LWAAP PDU数据(也即，GTPU报文)。
S204、WT设备对接收到的GTPU报文解封装。
由于基站发送给WT设备的LWAAP PDU数据是经过GTPU封装后的，所以，WT设备在接收到GTPU报文后，会对其进行解封装，从GTPU报文中提取出基站原始发送的LWAAP PDU数据。
S205、WT设备对LWAAP PDU数据进行以太封装以获得以太报文。
WT设备对该LWAAP PDU数据进行以太网封装时，需要在以太封装头中设置源MAC地址、目的MAC地址等信息。对于目的MAC地址，WT设备需要获取接收该LWAAP PDU数据的GTP隧道的隧道端点标识符(Tunnel Endpoint Identifier，TEID)，然后根据该TEID到本地数据库进行查询。
另外，在进行以太封装的时候，WT设备还需要在以太封装头的帧数据字段协议类型中填入“0x9E65”，“0x9E65”用以表征该数据为LWAAP PDU数据。
S206、WT设备对以太报文进行CAPWAP封装以获得CAPWAP报文。
CAPWAP协议是一个在数据传输中比较通用应用层协议。
S207、WT设备将CAPWAP报文发送给AP设备。
一个AC可以同时管理多个AP设备，在一个AP设备下又可以接入一个或多个终端，当WT设备封装得到CAPWAP报文后，将该报文发送给AP设备，以便由AP设备将其转发到目标终端处。
S208、AP设备对CAPWAP报文进行解封装。
AP设备接收到CAPWAP报文后，进行转发之前，会先对接收到的CAPWAP报文进行CAPWAP解封装，然后才按照解封装得到的以太报文的以太封装头中的目的MAC地址将该以太报文转发给对应的终端。
终端接收到以太报文之后，若发现以太封装头中包含的以太网类型字段中填入的信息为“0x9E65”，则判断该报文为LWAAP PDU数据，因此将该报文发送至LTE模块，以进行PDCP数据汇聚，从而得到从S-GW发送至本终端的原始数据。
在图2中所示的数据传输方案当中，被转发的LWAAP PDU需要 经历多次封装与解封装过程，这不仅使得数据的传输效率降低、用户体验受到很大影响，同时，也占用了LWA系统的处理资源，不利于资源的优化配置。
下面将结合具体实施例对本公开中改进的数据传输方案进行介绍。
图3为本公开的实施例中提供的一种数据传输系统的架构图，如图3所示，本实施例的数据传输系统3包括基站310、第一数据传输装置320以及第二数据传输装置330。本实施例中，基站310与第一数据传输装置320之间传输数据的数据面使用GTPU协议，而控制面使用Xw控制协议(Xw-C)。本实施例中的第一数据传输装置320可以为无线局域网终结设备，第二数据传输装置330可以为接入点设备。
在图1所示出的LWA系统构架中，无线局域网终结设备12与AP设备13之间是通过CAPWAP这种高层协议进行通信的，之所以基于CAPWAP协议进行通信，主要是由于CAPWAP协议是应用层协议，这种高层协议的使用相对广泛，当网络体系较大的时候，所有网元约定采用比较通用的协议进行通信，从而使用统一的标准接口，便于实现各厂家设备间的相互通信。但是，在数据传输系统这种较小的网络当中，CAPWAP协议仅在无线局域网终结设备12与AP设备13二者之间使用，这反倒增加了无线局域网终结设备12与AP设备13在与其他网元进行交互时的处理负担。
因此，本实施例中，第一数据传输装置320与第二数据传输装置330之间建立二层网络，在第一数据传输装置320与第二数据传输装置330在进行交互的时候，可以直接使用以太报文进行通信。
基站310可以从移动通信网络的移动管理实体或服务网关350处接收需要发送给目标终端340的数据。基站310接收到需要发送给目标终端340的待传输数据之后，有这样三个选择：第一、基站310直接将接收到的所有待传输数据均通过移动通信网络发送给目标终端340；第二、基站310直接将接收到的所有待传输数据均通过无线局域网传输给目标终端340；第三、基站310将接收到的待传输数据 进行拆分，并将拆封后的一部分数据分配到移动通信网络中，直接传输给目标终端340，对于另一部分数据，基站310将其传输给第一数据传输装置320，由第一数据传输装置320通过自己所在的无线局域网发送给目标终端340。
对于第一种选择，由于待传输数据不经由第一数据传输装置320和第二数据传输装置330，而且传输技术成熟，所以本实施例中对其不做进一步介绍。本实施例中主要针对待传输数据需要通过无线局域网传输至目标终端340的第二种和第三种选择进行阐述，应当理解的是，无论是部分数据经由无线局域网传输还是全部数据均经由无线局域网传输，传输路径与处理过程都是基本相似的。
下面结合图4所示出的流程图对本实施例中提供的数据传输方法的实现过程进行介绍，如图4所示，本实施例的数据传输方法包括以下步骤S401至S403。
S401、第一数据传输装置320从基站310处接收需要发送给目标终端340的待传输数据。
在本实施例中，第一数据传输装置320与基站310之间的组网通信方式可以参照相关技术。待传输数据在基站310侧需要经过GTPU封装后，以GTPU报文的形式发送给第一数据传输装置320。基站310向第一数据传输装置320发送GTPU报文时，是通过与第一数据传输装置320之间建立的GTP隧道进行传输的。若基站310采用LWA技术向目标终端进行数据传输，则基站310在从LTE网络接收到全部的数据之后，需要根据PDCP协议对这些数据进行拆分，从而得到LWAAP PDU数据。但是，本实施例中提供的数据传输方法不限于用于LTE网络与WLAN网络融合的场景。一方面，基站310发送给第一数据传输装置320的待传输数据不一定是经过拆分后的数据，例如，基站310在从LTE网络中接收到全部数据之后，可以直接按照第三种选择，将全部待传输数据均发送给第一数据传输装置320，由第一数据传输装置320通过无线局域网进行传输。另一方面，上述LTE网络可以扩展为所有的移动通信网络，即，基站310不一定是从4G网络中接收待传输数据，技术成熟的情况下，若例如5G、6G网络甚至是更高代的 移动通信网络也支持与无线局域网进行融合时，本实施例提供的数据传输方法也同样适用。
S402、第一数据传输装置320将待传输数据通过与第二数据传输装置330之间建立的二层网络，以以太封装格式发给目标第二数据传输装置330。
应当理解的是，第一数据传输装置320与目标第二数据传输装置330之间建立二层网络进行通信，那么在二者之间传输的数据是已经以太封装后的，也即，第一数据传输装置320发送给接入点设备的待传输数据是以太封装格式的。但是，也正是因为本实施例中仅要求第一数据传输装置320与第二数据传输装置330之间采用二层网络通信，所以，对待传输数据的以太封装可以由第一数据传输装置320自己完成，也可以在第一数据传输装置320接收到该待传输数据之前就以太封装完成，即基站310传输给第一数据传输装置320的待传输数据就是以太封装格式的。例如，基站310向第一数据传输装置320发送的GTPU报文中携带包含有待传输数据的以太报文，也即，基站310从移动通信网络接收到待传输数据之后，可以先对待传输数据进行以太封装，然后再对以太封装完成的待传输数据进行GTPU封装，最后再将GTPU报文发送给第一数据传输装置320。因此，第一数据传输装置320在接收到GTPU报文之后，只需要进行一次GTPU解封装即可将GTPU报文中的以太报文发送给第二数据传输装置330。
在本实施例中，基站310发送给第一数据传输装置320的待传输数据并没有进行以太封装，所以第一数据传输装置320在将从基站310接收到的待传输数据发送给第二数据传输装置330之前，需要先对待传输数据进行以太封装。具体地，因为第一数据传输装置320与基站310之间传输的数据是经过GTPU封装的，所以，第一数据传输装置320在接收到基站310发送的GTPU报文之后，会对该GTPU报文进行解封装，并从中提取出基站310封装的原始待传输数据。然后，第一数据传输装置320对提取出的原始待传输数据进行以太封装。在以太封装头中，需要设置待传输数据的源MAC地址、目的MAC地址等信息，对于源MAC地址，第一数据传输装置320可以填入自己的 MAC地址(若第一数据传输装置320与AC部署在一起，该MAC地址也即是AC的MAC地址)。对于目的MAC地址，第一数据传输装置320需要填入目标终端340的MAC地址。
由于基站310发送给第一数据传输装置320的GTPU报文中并没有直接携带目标终端340的MAC地址的相关信息，所以下面对第一数据传输装置320获取目标终端340的MAC地址的过程进行简单的介绍。基站310为了向第一数据传输装置320发送针对某一目标终端340的待传输数据，会专门与第一数据传输装置320建立一条用于发送该待传输数据的GTP隧道。所以第一数据传输装置320通过该GTP隧道从基站310侧接收到包含有待传输数据的GTPU报文后，可以根据该GTP隧道的相关信息查询到该隧道所传输的数据是为哪一个终端传输的。在本实施例中，第一数据传输装置320获取到接收GTPU报文的GTP隧道的TEID，然后根据该TEID到本地数据库中进行查询，可以获得该GTP隧道对应的目标终端340是哪一个。应当理解的是，在第一数据传输装置320的本地数据库中应当存储了GTP隧道的TEID与目标终端的MAC地址之间的映射关系。
除了在以太封装头中设置源MAC地址与目的MAC地址，对于移动通信网络与无线局域网融合方案中的待传输数据，例如，基于LWA技术的待传输数据，因为这一类型的数据到了终端侧后，必须要与终端通过移动通信网络直接从基站310接收到的数据进行合并处理，所以，针对这一类型的待传输数据，第一数据传输装置320在进行以太封装的时候，需要在以太封装头中设置一个合并标识，该合并标识用于告知终端，该待传输数据是需要根据PDCP协议进行汇聚合并的数据。图5示出了一种以太报文的帧格式，在其封装头中包括有“目的MAC地址”51、“源MAC地址”52以及“帧数据字段协议类型”53。通常，目的MAC地址51和源MAC地址52分别占6字节，而帧数据字段协议类型53通常占两个字节，帧数据字段协议类型53用于指明待传输数据54中包含的数据所使用的协议类型，在本实施例中，第一数据传输装置320可以在帧数据字段协议类型53中填入“0x9E65”，“0x9E65”即用于表征待传输数据54中所包含的数据是LWAAP PDU 数据，所以，“0x9E65”可以作为本实施例中的合并标识。最后，在以太报文当中还包括“循环冗余码校验码(CRC)”55，其用于接收端(本实施例中指的是目标终端340)对接收到的数据进行检测。
以太封装完成以后，第一数据传输装置320通过二层网络将封装形成的以太报文发送给目标第二数据传输装置330。在本实施例中，因为第一数据传输装置320与第二数据传输装置330之间的数据传输可以直接走二层网络，所以不用再对以太报文进行CAPWAP封装，节省了第一数据传输装置320的CAPWAP封装时间以及第二数据传输装置330的CAPWAP解封装时间。
S403、第二数据传输装置330根据待传输数据的以太封装头中的信息将该待传输数据传输给目标终端340。
由于第二数据传输装置330通过二层网络接收到的以太报文中携带有待传输数据的目的MAC，所以，第二数据传输装置330接收到第一数据传输装置320传输的携带有待传输数据的以太报文之后，可以直接根据该以太报文的以太封装头中的目的MAC将该报文传输给对应的目标终端340。
本实施例提供的数据传输方法中，在第一数据传输装置320与第二数据传输装置330之间建立二层网络进行通信，使得携带有待传输数据的以太报文可以不用进行其他封装而直接在第一数据传输装置320与第二数据传输装置330之间进行传输，避免了如结合图1、图2描述的方案中无线局域网终结设备12需要再对以太报文进行一次CAPWAP封装、同时AP设备13需要对接收到的CAPWAP报文解封装才能得到以太报文的问题，节省了数据传输的时间，提升了数据传输效率，提升了用户体验。
本实施例中，第一数据传输装置320不需要对以太报文进行CAPWAP封装，第二数据传输装置330不需要进行CAPWAP解封装，所以节省了第一数据传输装置320与第二数据传输装置330的处理资源，能够让第一数据传输装置320与第二数据传输装置330利用这些处理资源更好地进行其他事务的处理，优化了资源配置。
上述实施例提供的数据传输方法虽然通过省略CAPWAP封装与解 封装的过程减少了数据传输时间与资源占用，但是，第一数据传输装置320与基站310之间在通信的时候还是需要进行GTPU封装，GTPU封装与解封装在时间与资源方面的开销也不小，若能减少这些开销，将进一步提升数据传输的性能。所以，本公开的实施例在上述实施例中的数据传输方案的构思基础上提出另一种数据传输方案，假定第一数据传输装置320为无线局域网终结设备，第二数据传输装置330为接入点设备。
图6示出了本公开的实施例提供的另一种数据传输系统的架构图。如图6所示，本实施例的数据传输系统6包括有基站610、无线局域网终结设备620与接入点设备630，基站610与移动管理实体或服务网关650之间的通信、基站610与目标终端640之间的直接通信、无线局域网终结设备620与接入点设备630之间的通信以及接入点设备630与目标终端640之间的通信方式可分别参照上述实施例或者相关技术，这里不再赘述。本实施例与上述实施例存在的区别的是，本实施例中，基站610与无线局域网终结设备620之间也建立二层网络。
上述实施例中，基站610与无线局域网终结设备620之间的数据面使用的是GTPU协议，基站610发送给无线局域网终结设备620的待传输数据是经GTPU封装之后通过GTP隧道发送的。但是，本实施例中，与无线局域网终结设备620与接入点设备630之间采用二层网络进行通信类似，基站610与无线局域网终结设备620之间也采用二层网络进行通信。也就是说，基站610发送给无线局域网终结设备620的待传输数据就已经是以太封装完成的数据了，而且该携带有待传输数据的以太报文并不需要再进行GTPU封装。
本实施例中，基站610与无线局域网终结设备620之间的数据通过二层网络进行传输，在控制面板，依旧使用Xw-C协议进行控制。下面结合图7中的交互图对本实施例中的数据传输方法进行说明。如图7所示，本实施例的数据传输方法包括以下步骤S701至S704。
S701、基站610对待传输数据进行以太封装。
基站610从移动通信网络(诸如LTE网络等)中接收到需要传输给目标终端640的数据之后，若需要基于LWA技术进行传输，则基 站610先在PDCP层对这些数据进行拆分，生成LWAAP PDU数据。然后，为了在二层网络传输这些数据，基站610对这些待传输数据进行以太封装，形成以太报文。以太报文的帧格式可以参见图5所示，对于基于LWA技术进行传输的数据，基站610需要在帧数据字段协议类型处写入表征待传输数据为LWAAP PDU数据的“0x9E65”，也即在以太封装头中添加和设置合并标识，对于源MAC地址，基站610可以填写自己的MAC地址，而对于目的MAC地址，基站610则可以直接填写目标终端640的MAC地址。基站610之所以不将目的MAC地址设置成WT设备620的MAC地址，这主要是由于本实施例中基站610与WT设备620通过二层网络进行通信，因此，二者之间并不会建立专门用来传输针对某一目标终端640的数据的GTP隧道，所以，若不直接填写目标终端640的MAC地址作为目的MAC地址，则当WT设备620接收到以太报文之后，可能无法了解该报文应当传输给谁。
另外，由基站610取代WT设备620进行以太封装还有这样一个优势，由于基站610从移动通信网络获取到需要向目标终端640发送的数据时，就能直接了解到这些数据是需要向哪一个目标终端640发送的，因此，基站610在对待传输数据进行以太封装的时候，并不需要如WT设备620进行以太封装时一样根据TEID来查询目标终端640的MAC地址，这节省了以太封装的时间，提升了以太封装的效率。
S702、无线局域网终结设备620通过二层网络接收基站610发送的携带有待传输数据的以太报文。
基站610对待传输数据的以太封装完成得到以太报文之后，基站610将会通过与WT设备620之间预先建立的二层网络将该以太报文发送给WT设备620，所以WT设备620通过二层网络就可以接收到携带有待传输数据的以太报文。
S703、无线局域网终结设备620将以太报文直接转发给接入点设备630。
在本实施例中，因为WT设备620既不用对待传输数据进行以太封装，也不用对待传输数据进行CAPWAP封装，所以，其仅充当转发设备对来自基站610的以太报文进行转发。WT设备620接收到以太 报文之后，从该以太报文的以太封装头中获取到目的MAC地址信息，然后根据该目的MAC地址信息确定应当将该报文从哪一个端口发送给哪一个接入点设备630。应当理解的是，在一个WT设备620下可以接入一个或多个接入点设备630，而在一个接入点设备630下，又可以接入一个或多个目标终端640，因此，当一个WT设备620接收到需要向某一个目标终端640进行下发的数据后，其应当能够获知如何将该数据传输给对应的目标终端640，也即，WT设备620中应当存储了接入其下各接入点设备630的各目标终端640的路径信息。下面对移动通信网络与无线局域网融合的方案中WT设备620记录到目标终端640的路径信息的过程进行介绍，具体请参见图8，如图8所示，WT设备620记录到目标终端640的路径信息的过程包括以下步骤S801至S803。
S801、基站610向无线局域网终结设备620发送目标终端640的关联信息。
当基站610需要WT设备620与自身配合实现移动通信网络与无线局域网融合的数据传输时，基站610会通过关联信息告知WT设备620相关目标终端640是哪一些。所以，在关联信息中，基站610会向WT设备620指示，即将有哪些目标终端640会接入该WT设备620下的接入点设备630，以便于实现移动通信网络与无线局域网的融合传输。
S802、无线局域网终结设备620通过接入点设备630获知向目标终端640进行信息转发的路径信息。
当关联信息中提及的目标终端640通过接入点设备630接入到无线局域网之后，WT设备620通过MAC地址学习，获取目标终端640相关信息。在WT设备620了解到目标终端640接入无线局域网的信息之后，其需要确定自身与该目标终端640所接入的接入点设备630通信时所使用的接口等路径信息。
S803、无线局域网终结设备620记录向目标终端640进行信息转发的路径信息。
WT设备620获取到向目标终端640传输数据的路径信息之后， 将这些路径信息与目标终端640的MAC地址进行关联存储，以供后续传输以太报文的时候使用。
S704、接入点设备630根据以太报文的以太封装头中的信息将以太报文转发给目标终端640。
当接收到以太报文之后，接入点设备630直接按照该以太报文的以太封装头中的目的MAC信息将该报文传输给对应的目标终端640。
当目标终端640接收到该以太报文之后，确定该以太报文的以太封装头中是否存在合并标识，在本实施例中，目标终端640主要是确定以太报文的以太封装头中的“帧数据字段协议类型”是否为“0x9E65”。若确定以太报文的以太封装头中的“帧数据字段协议类型”为“0x9E65”，则将该以太报文中携带的数据进行汇聚合并，若确定以太报文的以太封装头中的“帧数据字段协议类型”不是“0x9E65”，说明该报文中携带的数据并没有根据PDCP进行拆分，不需要合并处理。
本实施例提供的数据传输方法中，不仅在WT设备620与接入点设备630之间采用二层网络进行通信，省略了在WT设备620与接入点设备630之间传输数据时的CAPWAP封装及解封装，而且，还让WT设备620与基站610之间也采用二层网络进行通信，进一步省略了WT设备620与基站610之间传输数据时的GTPU封装。让基站610、WT设备620以及接入点设备630三者之间均直接使用以太封装格式进行数据传输，节省了其他封装与解封装的处理资源与处理时间，极大程度地提升了数据传输效率与资源配置的优化程度。
另外，相对上述实施例而言，由于本实施例中以太封装在基站610侧完成，而基站610并不需要如WT设备620一样经过复杂的查询才能获取到目标终端640的MAC地址，因此，本实施例中由基站610进行以太封装进一步提升了以太封装的效率，降低了以太封装过程中的资源消耗。
图9示出了本公开的实施例中提供的第一数据传输装置的一种结构示意图，该第一数据传输装置可用于实现前述实施例中的一种数据传输方法，该第一数据传输装置所在的数据传输系统的架构图请参 见图3所示，这里不再赘述。
如图9所示，本实施例中的第一数据传输装置320包括第一接收单元322和第一数据发送单元324，其中，第一接收单元322用于从基站处接收待发送给目标终端的待传输数据，而第一数据发送单元324用于将待传输数据通过与第二数据传输装置之间建立的二层网络，以以太封装格式发给第二数据传输装置，以供该第二数据传输装置将数据传输给目标终端。本实施例中的第一数据传输装置可以为无线局域网终结设备，第二数据传输装置可以为接入点设备。
在本实施例中，第一接收单元322与基站之间的组网通信方式可以参照相关技术的介绍。待传输数据在基站侧需要经过6TPU封装后，以6TPU报文的形式发送给第一接收单元322。基站向第一接收单元322设备发送GTPU报文时，是通过与第一接收单元322设备之间建立的GTP隧道进行传输的。若基站采用LWA技术向目标终端进行数据传输，则基站在从LTE网络接收到全部的数据之后，需要根据PDCP协议对这些数据进行拆分，从而得到LWAAP PDU数据。本实施例中提供的数据传输方法不限于用于LTE网络与WLAN网络融合的场景。一方面，基站发送给第一接收单元322的待传输数据不一定是经过拆分后的数据，例如，基站在从LTE网络中接收到全部数据之后，可以直接按照上述第三种选择，将全部待传输数据均发送给第一接收单元322，由第一数据传输装置320的第一数据发送单元324通过无线局域网传输给目标终端。另一方面，基站可以从各种移动通信网络接收待传输数据，例如可以从4G、5G、6G网络甚至是更高代的支持与无线局域网进行融合的移动通信网络接收待传输数据，本实施例提供的第一数据传输装置320也同样适用这些情形。
当基站将待传输数据均发送给第一接收单元322后，第一数据发送单元324将会通过第一数据传输装置320所在的无线局域网向第二数据传输装置传输这些待传输数据。应当理解的是，第一数据发送单元324与第二数据传输装置之间建立二层网络进行通信，那么在二者之间传输的数据是已经以太封装后的，也即，第一数据发送单元324发送给接入点设备的待传输数据是以太封装格式的。但是，也正 是因为本实施例中仅要求第一数据发送单元324与第二数据传输装置之间采用二层网络通信，所以，对待传输数据的以太封装可以由第一数据传输装置320自己完成，也可以在第一接收单元322接收到该待传输数据之前就以太封装完成，即基站传输给第一接收单元322的待传输数据就是以太封装格式的。例如，基站向第一接收单元322发送的GTPU报文中携带包含有待传输数据的以太报文，也即，基站从移动通信网络接收到待传输数据之后，可以先对待传输数据进行以太封装，然后再对以太封装完成的待传输数据进行GTPU封装，最后再将GTPU报文发送给第一接收单元322。因此，第一接收单元322在接收到GTPU报文之后，只需要进行一次GTPU解封装即可将GTPU报文中的以太报文发送给第二数据传输装置。
在本实施例中，基站发送给第一接收单元322的待传输数据并没有进行以太封装，所以在第一数据发送单元324将从基站接收到的待传输数据发送给第二数据传输装置之前，第一数据传输装置320需要先对待传输数据进行以太封装。因此，本实施例中的第一数据传输装置320还包括数据处理单元326，请参见图10。具体地，由于第一接收单元322与基站之间传输的数据是经过GTPU封装的，所以，在第一接收单元322接收到基站发送的GTPU报文之后，数据处理单元326会对该GTPU报文进行解封装，并从中提取出基站封装的原始待传输数据。然后数据处理单元326对提取出的原始待传输数据进行以太封装。在以太封装头中，需要设置待传输数据的源MAC地址、目的MAC地址等信息，对于源MAC地址，数据处理单元326可以填入第一数据传输装置320的MAC地址(若第一数据传输装置320与AC部署在一起，该MAC地址也即是AC的MAC地址)。对于目的MAC地址，数据处理单元326需要填入目标终端的MAC地址。
由于基站发送给第一接收单元322的GTPU报文中并没有直接携带目标终端的MAC地址的相关信息，所以下面对数据处理单元326获取目标终端的MAC地址的过程进行简单的介绍。基站为了向第一接收单元322发送针对某一目标终端的待传输数据，会专门与第一接收单元322建立一条用于发送该待传输数据的GTP隧道。所以第一接收 单元322通过该GTP隧道从基站侧接收到包含有待传输数据的GTPU报文后，数据处理单元326可以根据该GTP隧道的相关信息查询到该隧道所传输的数据是为哪一个终端传输的。在本实施例中，数据处理单元326获取到接收GTPU报文的GTP隧道的TEID，然后根据该TEID到本地数据库中进行查询，可以获得该GTP隧道对应的目标终端是哪一个。应当理解的是，在第一数据传输装置320的本地数据库中应当存储了GTP隧道的TEID与目标终端的MAC地址之间的映射关系。
除了在以太封装头中设置源MAC地址与目的MAC地址，对于移动通信网络与无线局域网融合方案中的待传输数据，例如，基于LWA技术的待传输数据，因为这一类型的数据到了终端侧后，必须要与终端通过移动通信网络直接从基站接收到的数据进行合并处理，所以，针对这一类型的待传输数据，数据处理单元326在进行以太封装的时候，需要在以太封装头中设置一个合并标识，该合并标识用于告知终端，该待传输数据是需要根据PDCP协议进行汇聚合并的数据。图5示出了一种以太报文的帧格式，在其封装头中包括有“目的MAC地址”51、“源MAC地址”52以及“帧数据字段协议类型”53。通常，目的MAC地址51和源MAC地址52分别占6字节，而帧数据字段协议类型53通常占两个字节，帧数据字段协议类型53用于指明待传输数据54中包含的数据所使用的协议类型，在本实施例中，数据处理单元326可以在帧数据字段协议类型53中填入“0x9E65”，“0x9E65”即用于表征待传输数据54中所包含的数据是LWAAP PDU数据，所以，“0x9E65”可以作为本实施例中的合并标识。最后，在以太报文当中还包括“循环冗余码校验码(CRC)”55，其用于接收端(本实施例中指的是目标终端)对接收到的数据进行检测。
以太封装完成以后，第一数据发送单元324通过二层网络将封装形成的以太报文发送给第二数据传输装置。在本实施例中，因为第一数据发送单元324与第二数据传输装置之间的数据传输可以直接走二层网络，所以数据处理单元326不用再对以太报文进行CAPWAP封装，节省了第一数据传输装置320的CAPWAP封装时间与第二数据传输装置的CAPWAP解封装时间。
图11示出了本公开的实施例中提供的第二数据传输装置的一种结构示意图，该第二数据传输装置可用于实现前述实施例中的一种数据传输方法，该第二数据传输装置所在的数据传输系统的架构图请参见图3所示，这里不再赘述。
如图11所示，本实施例中的第二数据传输装置330包括第二接收单元332和第二数据发送单元334，第二接收单元332用于通过与第一数据传输装置之间建立的二层网络接收第一数据传输装置以以太封装格式发送的待传输数据，第二数据发送单元334用于根据待传输数据的以太封装头中的信息将待传输数据传输给目标终端。
由于第二接收单元332通过二层网络接收到的以太报文中携带有待传输数据的目的MAC地址，所以，第二接收单元332接收到第一数据传输装置传输的携带有待传输数据的以太报文之后，第二数据发送单元334可以直接根据该以太报文的以太封装头中的目的MAC地址将该报文传输给对应的目标终端，而不用先进行CAPWAP的解封装流程。
上述实施例中，通过在第一数据传输装置320与第二数据传输装置330之间建立二层网络进行通信，使得携带有待传输数据的以太报文可以不用进行其他封装而直接在第一数据传输装置320与第二数据传输装置330之间进行传输，避免了第一数据传输装置320需要对以太报文进行CAPWAP封装、同时第二数据传输装置330需要对接收到的CAPWAP报文解封装才能得到以太报文的问题，节省了数据传输的时间，提升了数据传输效率，提升了用户体验。
同时，由于第一数据传输装置320不需要对以太报文进行CAPWAP封装，而第二数据传输装置330不需要进行CAPWAP解封装，所以节省了第一数据传输装置320与第二数据传输装置330的处理资源，能够让第一数据传输装置320与第二数据传输装置330利用这些处理资源更好地进行其他事务的处理，优化了资源配置。
在图6所示的数据传输系统中，无线局域网终结设备620可以与图9所示出的一样，包括第一接收单元与第一数据发送单元，而接入点设备630与图11所示出的一样，包括第二接收单元与第二数据 发送单元，这里的无线局域网终结设备620和接入点设备630用于实现前述实施例中的另一种数据传输方法。
基站610从移动通信网络(诸如LTE网络等)中接收到需要传输给目标终端的数据之后，若需要基于LWA技术进行传输，则基站610先在PDCP层对这些数据进行拆分，生成LWAAP PDU数据。然后，为了在二层网络传输这些数据，基站610对这些待传输数据进行以太封装，形成以太报文。以太报文的帧格式可以参见图5所示，对于基于LWA技术进行传输的数据，基站610需要在帧数据字段协议类型处写入表征待传输数据为LWAAP PDU数据的“0x9E65”，也即在以太封装头中添加设置合并标识，对于源MAC地址，基站610可以填写自己的MAC地址，而对于目的MAC地址，基站610则可以直接填写目标终端的MAC地址。基站610之所以不将目的MAC地址设置成WT设备620的MAC地址，这主要是由于本实施例中基站610与WT设备620的第一接收单元通过二层网络进行通信，因此，二者之间并不会建立专门用来传输针对某一目标终端的数据的6TP隧道，所以，若不直接填写目标终端的MAC地址作为目的MAC地址，则当第一接收单元接收到以太报文之后，可能无法了解该报文应当传输给谁。
另外，由基站610取代WT设备620进行以太封装还有这样一个优势，由于基站610从移动通信网络获取到需要向目标终端发送的数据时，就能直接了解到这些数据是需要向哪一个终端发送的，因此，基站610在对待传输数据进行以太封装的时候，并不需要如WT设备620一样根据TEID来查询目标终端的MAC地址，这节省了以太封装的时间，提升了以太封装的效率。
基站610对待传输数据的以太封装完成得到以太报文之后，基站610将会通过与第一接收单元之间预先建立的二层网络将该以太报文发送给第一接收单元，所以WT设备620的第一接收单元通过二层网络就可以接收到携带有待传输数据的以太报文。
在本实施例中，因为WT设备620既不用对待传输数据进行以太封装，也不用对待传输数据进行CAPWAP封装，所以，其仅充当转发设备对来自基站610的以太报文进行转发。第一接收单元收到以太报 文之后，第一数据发送单元从该以太报文的以太封装头中获取到目的MAC地址信息，然后根据该目的MAC地址信息确定应当将该报文从哪一个端口发送给哪一个接入点设备630。应当理解的是，在一个WT设备620下可以接入一个或多个接入点设备630，而在一个接入点设备630下，又可以接入一个或多个终端，因此，当一个WT设备620接收到需要向某一个终端进行下发的数据后，其应当能够获知如何将该数据传输给对应的目标终端，也即，WT设备620中应当存储了接入其下各接入点设备630的各终端的路径信息。因此，一些实施例中，如图12所示，无线局域网终结设备620包括路径记录单元626。
该情况下，无线局域网终结设备620包括第一接收单元622、第一数据发送单元624以及路径记录单元626。下面对移动通信网络与无线局域网融合的方案中路径记录单元626记录到终端的路径信息的过程进行介绍。
当基站610需要WT设备620与自身配合实现移动通信网络与无线局域网融合的数据传输时，基站610会通过关联信息告知路径记录单元626相关目标终端是哪一些。所以，在关联信息中，基站610会向路径记录单元626指示，为了实现移动通信网络与无线局域网的融合传输，即将有哪些终端会接入该WT设备620下的接入点设备630。
当关联信息中提及的目标终端通过接入点设备630接入到无线局域网之后，路径记录单元626可以通过主动向接入点设备630进行询问而了解到这一信息，或者，当目标终端接入到某一目标接入点设备630之后，该接入点设备630可以主动向路径记录单元626上报这一信息。在路径记录单元626了解到目标终端接入无线局域网的信息之后，其需要确定自身与该目标终端所接入的接入点设备630通信时所使用的接口等路径信息。
路径记录单元626获取到向目标终端传输数据的路径信息之后，将这些路径信息与目标终端的MAC地址进行关联存储，以供后续传输以太报文的时候使用。
当接入点设备630的第二接收单元接收到以太报文之后，其第二数据发送单元直接按照该以太报文的以太封装头中的目的MAC地 址信息将该报文传输给对应的目标终端。当目标终端接收到该以太报文之后，确定该以太报文的以太封装头中是否存在合并标识，在本实施例中，目标终端主要是确定以太报文的以太封装头中的“帧数据字段协议类型”是否为“0x9E65”。若确定以太报文的以太封装头中的“帧数据字段协议类型”为“0x9E65”，则将该以太报文中携带的数据进行汇聚合并，若确定以太报文的以太封装头中的“帧数据字段协议类型”不是“0x9E65”，说明该报文中携带的数据并没有根据PDCP进行拆分，不需要合并处理。
本实施例提供的WT设备620与接入点设备630，不仅支持WT设备620与接入点设备630之间的二层组网通信，以省略WT设备620与接入点设备630之间传输数据时的CAPWAP封装及解封装，而且，还支持WT设备620与基站610之间也采用二层网络进行通信，进一步省略了WT设备620与基站610之间传输数据时的GTPU封装。让基站610、WT设备620以及接入点设备630三者之间均直接使用以太封装格式进行数据传输，节省了其他封装与解封装的处理资源与处理时间，极大程度地提升了数据传输效率与资源配置的优化程度。
另外，由于本实施例中以太封装在基站610侧完成，而基站610并不需要如WT设备620一样经过复杂的查询才能获取到目标终端的MAC地址，因此，本实施例中由基站610进行以太封装进一步提升了以太封装的效率，降低了以太封装过程中的资源消耗。
图13示出了本公开的实施例中提供的一种基站的硬件结构示意图，如图13所示，基站13包括第一处理器131和第一通信装置132，其中第一通信装置132能够从诸如LTE网络的移动通信网络中接收需要发送给目标终端的待传输数据，而第一处理器131能够根据实际需求对这些待传输数据进行拆分或者封装处理。例如，当该基站13通过移动通信网络和无线局域网融合技术向目标终端传输数据，例如基站13通过LWA技术向目标终端进行数据传输时，第一处理器131需要根据PDCP协议对从移动通信网络中接收到的数据进行拆分处理，得到LWAAP PDU数据。
图14示出了本公开的实施例中提供的一种无线局域网终结设备 的硬件结构示意图。如图14中所示，无线局域网终结设备14包括第二处理器141、第二通信装置142以及第二存储器143。无线局域网终结设备14由第二通信装置142在第二处理器141的控制下实现前述实施例中第一数据传输装置中的第一接收单元、第一数据发送单元的功能。
如果图13所示的基站13的第一通信装置132与图14所示的无线局域网终结设备14之间不是通过二层网络进行通信时，第一处理器131需要对LWAAP PDU数据进行GTPU封装，然后控制第一通信装置132与无线局域网终结设备14建立GTP隧道，以将该GTPU报文传输给无线局域网终结设备14。第二通信装置142通过与基站13之间的GTP隧道接收携带有需要发送给目标终端的待传输数据的GTPU报文，然后由第二处理器141对该GTPU报文进行解封装，从中提取出LWAAP PDU数据。然后第二处理器141对LWAAP PDU数据进行以太封装。在以太封装过程中，第二处理器141需要获取到目标终端的MAC地址作为以太报文的以太封装头中的目的MAC地址，因此，第二处理器141需要获取到对应GTP隧道的TEID，然后根据第二存储器143预先存储的TEID与终端的MAC地址之间的映射关系查找得到对应的目的MAC地址。以太封装完成之后，第二处理器141根据第二存储器143存储的路径信息与MAC地址之间的映射关系确定应当如何将该以太报文发送给正确的目标接入点设备。
如果基站13的第一通信装置132与无线局域网终结设备14之间采用二层网络通信，则第一处理器132需要对LWAAP PDU数据进行以太封装，并将封装得到的以太报文通过第一通信装置132发送给无线局域网终结设备14。第二通信装置142在接收到该以太报文之后，第二处理器141可以直接从以太封装头中获取目的MAC信息，然后根据第二存储器143存储的路径信息与MAC地址之间的映射关系确定应当如何将该以太报文发送给正确的目标接入点设备，最后，第二处理器141控制第二通信装置142按照自己确定出的路径信息将该以太报文转发给对应的目标接入点设备。
图15示出了本公开的实施例中提供的一种接入点设备的硬件机 构示意图，如图15所示，接入点设备15包括第三处理器151、第三通信装置152和第三存储器153。接入点设备15由第三通信装置152在第三处理器151的控制下实现前述实施例中第二数据传输装置中的第二接收单元、第二数据发送单元的功能。无论无线局域网终结设备14与基站13之间的通信方式如何，第三通信装置152从无线局域网终结设备14处接收到的数据总是以太封装完成的，所以，第三处理器151可以直接根据以太报文中的目的MAC地址信息将该报文转发给对应的目标终端。可以理解的是，在第三存储器153中应当存储了终端的MAC地址与转发路径之间的映射关系，例如，针对某一终端的数据应当从哪一个端口进行下发等。
图13所示的基站、图14所示的无线局域网终结设备以及图15所示的接入点设备支持上述实施例中提供的数据传输方案，能够避免数据传输过程中的多次封装与解封装处理，因此节省了数据传输时间，提升了数据传输效率，提升了用户体验，同时，也节省了通信系统的处理资源，有利于资源优化配置的实现。
除前述各实施例提供的方案以外，本公开还提供一种如图16所示的数据传输系统，如图16所示，数据传输系统16包括基站161、无线局域网终结设备162以及接入点设备163，在该数据传输系统当中，基站161与WT设备162之间采用二层网络进行通信，而WT设备162与接入点设备163之间采用CAPWAP进行通信。
所以基站161向WT设备162发送待传输数据时，通过预先建立的二层网络，以以太封装格式发送数据。由于基站161与WT设备162之间不会建立GTP隧道，所以，WT设备162在接收到携带有待传输数据的以太报文之后，可能无法通过GTP隧道的TEID查询到目标终端164的MAC地址。因此，基站161在对待传输数据进行以太封装时，直接将以太封装头中的目的MAC地址设置成目标终端164的MAC地址。
当WT设备162接收到基站161发送的以太报文之后，其会通过CAPWAP将其发送给接入点设备163，所以，WT设备162需要对以太报文再进行一次CAPWAP封装，封装完成之后，WT设备162将CAPWAP报文发送给接入点设备163。
接入点设备163在接收到CAPWAP报文之后，需要先对该报文进行CAPWAP解封装，从中提取到以太报文，然后按照以太报文的以太封装头中的目的MAC地址将其发送给对应的目标终端164。
该数据传输方法当中，虽然待传输数据在WT设备162与接入点设备163之间传输的时候，仍然需要进行一次CAPWAP封装，但是，由于基站161与WT设备162之间采用二层网络通信，所以使得待传输数据在基站161与WT设备162之间传输时不需要再进行GTPU封装，这相对于现有的数据传输方案而言，还是减少了封装与解封装的次数，节省了数据传输时间与转发处理资源。
另外，由于以太封装由基站161完成，而基站161在从移动通信网络获取到需要向目标终端发送的数据时，就能直接了解到这些数据时需要向哪一个终端发送的，因此，基站161在对待传输数据进行以太封装的时候，并不需要查询目标终端的MAC地址，这节省了以太封装的时间，提升了以太封装的效率。
显然，本领域的技术人员应该明白，前述实施例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，在一些实施方式中，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在计算机存储介质(ROM/RAM、磁碟、光盘)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。所以，本公开不限制于任何特定的硬件和软件的结合。
下面提供一种存储介质，该存储介质可以存储一个或多个计算机程序，例如，该存储介质可以存储第一数据传输设备(例如WT设备中的处理器)执行的计算机程序，WT设备中的处理器执行该存储介质中的计算机程序可以实现数据传输方法的以下步骤：从基站处接收需要发送给目标终端的待传输数据；将待传输数据通过与第二数据传输装置之间建立的二层网络，以以太封装格式发给第二数据传输装置，以供该第二数据传输装置将数据传输给目标终端，第二数据传输 装置可以为接入点设备。
所述计算机程序还可以执行以下步骤：在从基站处接收需要发送给目标终端的待传输数据之前，接收基站发送的目标终端的关联信息，目标终端的关联信息用于告知无线局域网终结设备已接入移动通信网络的目标终端即将接入无线局域网终结设备所在的无线局域网。
所述计算机程序还可以执行以下步骤：在将待传输数据通过与第二数据传输装置之间建立的二层网络，以以太封装格式发给第二数据传输装置之前，对从基站处接收到的待传输数据进行以太封装。
对从基站处接收到的待传输数据进行以太封装可以包括：根据接收隧道的隧道端点标识符查询得到目标终端的物理地址，其中，接收隧道为第一数据传输装置从基站处接收待传输数据时所使用的通用分组无线服务技术隧道，基于目标终端的物理地址对待传输数据进行以太封装。
对从基站处接收到的待传输数据进行以太封装还可以包括：在待传输数据的以太封装头中设置合并标识，合并标识用于告知目标终端待传输数据需要根据分组数据汇聚协议进行合并。
从基站处接收需要发送给目标终端的待传输数据包括：通过与基站预先建立的二层网络接收经基站进行以太封装后的待传输数据。
将待传输数据通过与第二数据传输装置之间建立的二层网络，以以太封装格式发给第二数据传输装置包括：从基站为待传输数据设置的以太封装头中获取目标终端的物理地址，并根据目标终端的物理地址将待传输数据传输给对应的第二数据传输装置。
另外，所述存储介质可以存储供第二数据传输设备(如接入点设备中的处理器)执行的计算机程序，接入点设备的处理器执行该存储介质中的计算机程序可以实现数据传输方法的以下步骤：通过与第一数据传输装置之间建立的二层网络接收第一数据传输装置以以太封装格式发送的待传输数据；根据待传输数据的以太封装头中的信息将待传输数据传输给目标终端。
本公开的实施例提供的存储介质可存储用于实现支持在第一数据传输装置与第二数据传输装置之间建立二层网络进行通信的数据 传输方法的计算机程序，使得携带有待传输数据的以太报文可以不用其他封装而直接在第一数据传输装置与第二数据传输装置之间进行传输，避免了现有技术中第一数据传输装置需要再对以太报文进行一次CAPWAP封装、同时第二数据传输装置需要对接收到的CAPWAP报文解封装才能得到以太报文的问题，节省了数据传输的时间，提升了数据传输效率，提升了用户体验。
以上内容是结合具体的实施方式对本公开的实施例所作的进一步详细说明，不能认定本公开的具体实施只局限于这些说明。对于本公开所属技术领域的普通技术人员来说，在不脱离本公开的构思的前提下，还可以做出很多简单推演、改变或替换，这些都应当视为属于本公开的保护范围。

Claims (15)

  1. 一种数据传输方法，包括：
    第一数据传输装置从基站处接收需要发送给目标终端的待传输数据；
    所述第一数据传输装置将所述待传输数据通过与第二数据传输装置之间建立的二层网络，以以太封装格式发送给所述第二数据传输装置，以供该第二数据传输装置将所述数据传输给所述目标终端。
  2. 如权利要求1所述的数据传输方法，还包括：在所述第一数据传输装置将所述待传输数据通过与第二数据传输装置之间建立的二层网络以以太封装格式发送给所述第二数据传输装置之前，所述第一数据传输装置对从所述基站处接收到的待传输数据进行以太封装。
  3. 如权利要求2所述的数据传输方法，其中，所述第一数据传输装置对从所述基站处接收到的待传输数据进行以太封装包括：
    所述第一数据传输装置根据接收隧道的隧道端点标识符查询得到所述目标终端的物理地址，其中，所述接收隧道为所述第一数据传输装置从所述基站处接收所述待传输数据时所使用的通用分组无线服务技术隧道；
    所述第一数据传输装置基于所述目标终端的物理地址对所述待传输数据进行以太封装。
  4. 如权利要求3所述的数据传输方法，其中，所述第一数据传输装置对从所述基站处接收到的待传输数据进行以太封装还包括：
    所述第一数据传输装置在所述待传输数据的以太封装头中设置合并标识，所述合并标识用于告知所述目标终端所述待传输数据需要根据分组数据汇聚协议进行合并。
  5. 如权利要求1所述的数据传输方法，其中，第一数据传输装 置从基站处接收需要发送给目标终端的待传输数据包括：
    所述第一数据传输装置通过与所述基站预先建立的二层网络接收经所述基站进行以太封装后的待传输数据。
  6. 如权利要求5所述的数据传输方法，其中，所述第一数据传输装置将所述待传输数据通过与第二数据传输装置之间建立的二层网络以以太封装格式发给所述第二数据传输装置包括：
    所述第一数据传输装置从所述基站为所述待传输数据设置的以太封装头中获取所述目标终端的物理地址，并根据所述物理地址将所述待传输数据传输给对应的第二数据传输装置。
  7. 如权利要求1至6中任一项所述的数据传输方法，其中，所述第一数据传输装置为无线局域网终结设备，所述第二数据传输装置为接入点设备，所述数据传输方法还包括：
    在所述第一数据传输装置从基站处接收需要发送给目标终端的待传输数据之前，所述无线局域网终结设备接收所述基站发送的目标终端的关联信息，所述目标终端的关联信息用于告知所述无线局域网终结设备已接入移动通信网络的所述目标终端即将接入所述无线局域网终结设备所在的无线局域网；
    所述无线局域网终结设备在所述目标终端接入所述无线局域网后，记录向所述目标终端进行信息转发的路径信息。
  8. 一种数据传输方法，包括：
    第二数据传输装置通过与第一数据传输装置之间建立的二层网络接收所述第一数据传输装置以以太封装格式发送的待传输数据；
    所述第二数据传输装置根据所述待传输数据的以太封装头中的信息将所述待传输数据传输给目标终端。
  9. 如权利要求8所述的数据传输方法，其中，所述第一数据传输装置为无线局域网终结设备，所述第二数据传输装置为接入点设备。
  10. 一种数据传输装置，包括：
    接收单元，用于从基站处接收待发送给目标终端的待传输数据；
    数据发送单元，用于通过二层网络以以太封装格式发送所述待传输数据，以供接收到该待传输数据的装置将所述数据传输给所述目标终端。
  11. 如权利要求10所述的数据传输装置，其中，所述接收单元用于通过与所述基站预先建立的二层网络接收经所述基站进行以太封装后的待传输数据。
  12. 一种数据传输装置，包括：
    接收单元，用于通过二层网络接收以以太封装格式发送的待传输数据；
    数据发送单元，用于根据所述待传输数据的以太封装头中的信息将所述待传输数据传输给目标终端。
  13. 一种数据传输系统，包括基站、第一数据传输装置以及第二数据传输装置，所述第二数据传输装置与所述第一数据传输装置通过二层网络进行通信，所述第一数据传输装置用于从所述基站处接收需要发送给目标终端的待传输数据，并将所述待传输数据通过二层网络以以太封装格式发送给所述第二数据传输装置，以供所述第二数据传输装置将所述数据传输给所述目标终端。
  14. 如权利要求13所述的数据传输系统，其中，所述第一数据传输装置为无线局域网终结设备，所述第二数据传输装置为接入点设备，所述基站与所述无线局域网终结设备通过二层网络进行通信，所述基站对所述待传输数据进行以太封装后，将经过以太封装的所述待传输数据发送给所述无线局域网终结设备，所述无线局域网终结设备用于将所述基站发送的所述待传输数据转发给所述接入点设备。
  15. 一种存储有计算机程序的计算机可读存储介质，其中所述计算机程序用于执行权利要求1至9中任一项所述的数据传输方法。
PCT/CN2018/076444 2017-05-19 2018-02-12 数据传输方法、系统及传输装置 WO2018210020A1 (zh)

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