WO2018103394A1 - 一种数据传输方法及装置 - Google Patents

一种数据传输方法及装置 Download PDF

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Publication number
WO2018103394A1
WO2018103394A1 PCT/CN2017/101295 CN2017101295W WO2018103394A1 WO 2018103394 A1 WO2018103394 A1 WO 2018103394A1 CN 2017101295 W CN2017101295 W CN 2017101295W WO 2018103394 A1 WO2018103394 A1 WO 2018103394A1
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Prior art keywords
data
ethernet frame
cpri data
receiving device
ethernet
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PCT/CN2017/101295
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English (en)
French (fr)
Inventor
陈国导
李春荣
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华为技术有限公司
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Publication of WO2018103394A1 publication Critical patent/WO2018103394A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/06—Notations for structuring of protocol data, e.g. abstract syntax notation one [ASN.1]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H04W88/085—Access point devices with remote components

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a data transmission method and apparatus.
  • the base station in the wireless communication system includes a baseband unit (BBU) and a radio radio unit (RRU).
  • the BBU is used to perform baseband processing (such as encoding, multiplexing, modulation, and spreading) to generate baseband signals, signaling processing, local and remote operation and maintenance, and monitoring of the working status of the base station.
  • the RRU is configured to convert the baseband signal into a radio frequency signal for transmission to the antenna, and after the data signal transmitted by the mobile device is received by the antenna, the data signal is processed first, and the processed data is transmitted to the BBU.
  • a common public radio interface can be used to transmit various data (including data transmitted by the BBU to the RRU, and the RRU is transmitted to the BBU by the BBU and the RRU of the same base station.
  • Data may also be referred to as CPRI data.
  • the BBU and RRU in the traditional base station are centralized. With the development of mobile communication networks, high bandwidth and flat network are the development trend of wireless networks. This will drive the base station to be more densely distributed. Since the BBU and the RRU of each base station are separated, in the future wireless communication system, the BBUs of the plurality of remote base stations can be centrally deployed in the cloud, and the RRUs of each base station are distributedly distributed in their respective internals. Obviously, in the above wireless communication system, there is a need for a transport network to connect a distributedly deployed RRU with a centrally placed BBU.
  • the present application provides a data transmission method and apparatus for solving the problem that the distance between the distributed RRY and the centralized BBU is large when the BBUs of the base station are placed in the centralized state, and the RRU and the BBU cannot be implemented.
  • the problem with the connection is large when the BBUs of the base station are placed in the centralized state, and the RRU and the BBU cannot be implemented.
  • an embodiment of the present application provides a data transmission method, where the method includes:
  • the transmitting device encapsulates the CPRI data to be transmitted in an Ethernet frame and transmits the Ethernet frame.
  • the transmitting device can encapsulate the CPRI data to be transmitted in an Ethernet frame, so that the Ethernet frame can be transmitted to the receiving device by using the already deployed Ethernet.
  • the transmission of the CPRI data can be implemented between the transmitting device and the receiving device by using each network device deployed in the Ethernet (for example, a mobile bearer network). Since the existing Ethernet is used between the sending device and the receiving device, and the existing Ethernet is widely distributed, the distance between the transmitting device and the receiving device is not limited when the data is transmitted. Therefore, by the above method, A connection between a distributed deployment RRU and a centrally deployed BBU.
  • the transmitting device encapsulates the CPRI data in the Ethernet frame by:
  • the transmitting device first determines feature information of the CPRI data, and then encapsulates the feature information and the CPRI data in the Ethernet frame.
  • the transmitting device can not only send the Ethernet frame carrying the CPRI data to the receiving device, but also notify the receiving device of the feature information of the CPRI data, so that the receiving device can Decapsulating the Ethernet frame according to the feature information of the CPRI data to obtain the CPRI data.
  • the feature information includes at least one or more of the following: a data length, a data type, synchronization information, a timestamp, a serial number; wherein the data length is used to represent the CPRI data. length.
  • the data type is used to indicate the type of the CPRI data.
  • the timestamp is used to indicate a time when the sending device receives the CPRI data.
  • the synchronization information is used to indicate a timing relationship between the CPRI data and previous CPRI data or with subsequent CPRI data.
  • the sequence number is used to indicate a sequence number of the encapsulation process performed by the sending device when the CPRI data is used.
  • the receiving device can ensure that the Ethernet frame is accurately decapsulated according to the feature information of the CPRI data after receiving the Ethernet frame, to obtain the CPRI data. .
  • the CPRI data includes CPRI data in a time window, that is, when the sending device has CPRI data to be sent for a period of time, the sending device sends the message according to a fixed time window.
  • the CPRI data is sliced, and then the CPRI data slice is encapsulated, so that the packetized bearer of the CPRI service can be implemented.
  • the transmitting device is a baseband processing unit BBU or a network device connected to the BBU; or the transmitting device is an RRU or a network device connected to the RRU.
  • the foregoing method can implement the transmission of CPRI data between the distributed deployment RRU and the centrally deployed BBU.
  • the transmitting device transmits the Ethernet frame over Ethernet.
  • the transmission of the CPRI data can be implemented between the sending device and the receiving device by using the Ethernet that has been deployed.
  • an embodiment of the present application provides a data transmission method, where the method includes:
  • the receiving device receives an Ethernet frame including CPRI data, and decapsulates the Ethernet frame to obtain the CPRI data.
  • the receiving device may decapsulate the Ethernet frame to obtain the CPRI data.
  • the transmitting device can transmit the Ethernet frame to the receiving device using the already deployed Ethernet. In this way, the transmitting device and the receiving device can be deployed between the Each network device in the Ethernet network (for example, a mobile bearer network) implements transmission of CPRI data. Since the existing Ethernet is used between the sending device and the receiving device, and the existing Ethernet is widely distributed, the distance between the transmitting device and the receiving device is not limited when the data is transmitted. Therefore, by the above method, A connection between a distributed deployment RRU and a centrally deployed BBU.
  • the receiving device decapsulates the Ethernet frame by using the following method to obtain the CPRI data:
  • the receiving device first acquires feature information of the CPRI data included in the Ethernet frame, and then decapsulates the Ethernet frame according to the feature information to obtain the CPRI data.
  • the receiving device can obtain the accurate CPRI data.
  • the feature information includes at least one or more of the following: a data length, a data type, synchronization information, a timestamp, a serial number; wherein the data length is used to represent the CPRI data. length.
  • the data type is used to indicate the type of the CPRI data.
  • the timestamp is used to indicate a time when the sending device that sends the Ethernet frame receives the CPRI data.
  • the synchronization information is used to indicate a timing relationship between the CPRI data and previous CPRI data or with subsequent CPRI data.
  • the sequence number is used to indicate a sequence number of the encapsulation process performed by the sending device when the CPRI data is used.
  • the receiving device can ensure that the Ethernet frame is accurately decapsulated according to the feature information of the CPRI data after receiving the Ethernet frame, to obtain the CPRI data. .
  • the CPRI data includes CPRI data within a time window.
  • the sending device that sends the Ethernet frame can slice the CPRI data to be sent according to the fixed time window, and encapsulate the CPRI data slice, so that the packetized bearer of the CPRI service can be implemented.
  • the receiving device is a radio remote unit RRU or a network device connected to the RRU; or the receiving device is a BBU or a network device connected to the BBU.
  • the foregoing method can implement the transmission of CPRI data between the distributed deployment RRU and the centrally deployed BBU.
  • the receiving device receives the Ethernet frame over Ethernet.
  • the transmission of the CPRI data can be implemented between the sending device and the receiving device by using the Ethernet that has been deployed.
  • the embodiment of the present application further provides a sending device, where the sending device has a function of implementing the behavior of the sending device in the foregoing method instance.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware, and the hardware or software includes one or more modules corresponding to the above functions.
  • the structure of the sending device includes a processing unit and a sending unit, and the units may perform corresponding functions in the foregoing method examples.
  • the units may perform corresponding functions in the foregoing method examples.
  • the detailed description in the method example which is not described herein.
  • the structure of the sending device includes: a service processing module, a data encapsulating module, and a photoelectric conversion module.
  • the service processing module is configured to generate CPRI data to be sent;
  • the data encapsulating module is configured to encapsulate the CPRI data in an Ethernet frame;
  • the photoelectric conversion module is configured to carry the Ethernet frame Converting an electrical signal into light carrying the Ethernet frame signal.
  • the structure of the sending device when the sending device is a network device connected to the BBU or the RRU, the structure of the sending device includes: a photoelectric conversion module, a data encapsulating module, and an Ethernet service processing module.
  • the photoelectric conversion module is configured to convert an optical signal carrying the CPRI data sent by the BBU or the RRU through the optical fiber to obtain an electrical signal carrying the CPRI data
  • the data encapsulating module is configured to use the CPRI data Encapsulated in an Ethernet frame
  • the Ethernet service processing module is configured to implement an Ethernet service of the sending device according to the Ethernet frame.
  • the structure of the transmitting device includes a communication interface, a processor, a bus, a memory, and a photoelectric conversion module.
  • the communication interface is for communicating with other devices, and the processor is configured to support the transmitting device to perform a corresponding function in the above method.
  • the memory is coupled to the processor, which stores program instructions and data necessary for the transmitting device.
  • the photoelectric conversion module is configured to perform conversion between an optical signal and an electrical signal.
  • the embodiment of the present application further provides a receiving device, where the receiving device has a function of implementing the behavior of the receiving device in the foregoing method instance.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware, and the hardware or software includes one or more modules corresponding to the above functions.
  • the receiving device includes a receiving unit and a processing unit, and the units may perform corresponding functions in the foregoing method examples.
  • the units may perform corresponding functions in the foregoing method examples. For details, refer to the detailed description in the method example, which is not described herein.
  • the structure of the receiving device includes: a photoelectric conversion module, a data decapsulation module, and a service processing module.
  • the photoelectric conversion module is configured to convert an optical signal carrying an Ethernet frame received by the receiving device through an optical fiber into an electrical signal carrying the Ethernet frame; and the data decapsulation module is configured to use the Ethernet
  • the frame is decapsulated to obtain CPRI data, and the service processing module is configured to implement the service of the receiving device according to the CPRI data.
  • the receiving device when the receiving device is a network device connected to the BBU or the RRU, the receiving device includes: an Ethernet service processing module, a data encapsulating module, and a photoelectric conversion module.
  • the Ethernet service processing module is configured to receive an Ethernet frame carrying CPRI data, and implement an Ethernet service of the receiving device, where the data decapsulation module is configured to decapsulate the Ethernet frame to obtain a
  • the CPRI data is used to convert a point signal carrying the CPRI data to obtain an optical signal carrying the CPRI data.
  • the structure of the receiving device includes a communication interface, a processor, a bus, a memory, and a photoelectric conversion module.
  • the communication interface is for communicating with other devices, and the processor is configured to support the receiving device to perform a corresponding function in the above method.
  • the memory is coupled to the processor, which stores program instructions and data necessary for the receiving device.
  • the photoelectric conversion module is configured to perform conversion between an optical signal and an electrical signal.
  • the embodiment of the present application further provides a communication network, where the communication network includes: a sending device, a receiving device, and an Ethernet.
  • the CPRI data mentioned in the above technical solution may be carried in the payload data of the Ethernet frame.
  • the Ethernet frame may also include a data feature field, which may be carried in the payload data of the Ethernet frame or may be carried in other fields of the Ethernet frame.
  • the sending device may encapsulate the CPRI data to be sent in an Ethernet frame, so that the Ethernet frame may be transmitted to the receiving device by using the deployed Ethernet.
  • the transmission of the CPRI data can be implemented between the transmitting device and the receiving device by using each network device deployed in the Ethernet (for example, a mobile bearer network). Since the existing Ethernet is used between the sending device and the receiving device, and the existing Ethernet is widely distributed, the distance between the transmitting device and the receiving device is not limited when the data is transmitted. Therefore, by using the foregoing solution, A connection between a distributed deployment RRU and a centrally deployed BBU.
  • FIG. 1 is a schematic diagram of a communication network according to an embodiment of the present application.
  • FIG. 1b is a schematic diagram of an Ethernet frame format according to an embodiment of the present application.
  • FIG. 1c is a schematic diagram of another Ethernet frame format provided by an embodiment of the present application.
  • FIG. 2 is a flowchart of a data transmission method according to an embodiment of the present application.
  • FIG. 3 is a structural diagram of a first sending device according to an embodiment of the present application.
  • FIG. 4 is a structural diagram of a first receiving device according to an embodiment of the present application.
  • FIG. 5 is a structural diagram of a second sending device according to an embodiment of the present application.
  • FIG. 6 is a structural diagram of a second receiving device according to an embodiment of the present application.
  • FIG. 7 is a structural diagram of a third sending device according to an embodiment of the present application.
  • FIG. 8 is a structural diagram of a third receiving device according to an embodiment of the present application.
  • FIG. 9 is a diagram showing an example of a first communication network according to an embodiment of the present application.
  • FIG. 10 is a diagram showing an example of a second communication network according to an embodiment of the present application.
  • FIG. 11 is a diagram showing an example of a third communication network according to an embodiment of the present application.
  • FIG. 12 is a schematic diagram of a fourth communication network according to an embodiment of the present application.
  • FIG. 13 is a structural diagram of a fourth sending device according to an embodiment of the present application.
  • FIG. 14 is a structural diagram of a fourth receiving device according to an embodiment of the present application.
  • the “sending device” mentioned in the embodiment of the present application may be an optical module or a hardware or software function module on a single board; further, the “sending device” may be a PTN device or a hardware module or software deployed on the PTN device. Module.
  • the “receiving device” mentioned in the embodiment of the present application may be an optical module or a hardware or software functional module on a single board; further, the “receiving device” may be a PTN device or a hardware module or software deployed on the PTN device. Module.
  • the embodiment of the present invention provides a data transmission method and device, which are used to solve the problem that a connection between a distributed deployment RRU and a centralized deployment BBU cannot be realized when a BBU of a base station is placed in a centralized manner.
  • the method and the device of the present application are based on the same inventive concept. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and the repeated description is not repeated.
  • the sending device may encapsulate the CPRI data to be sent in an Ethernet frame, so that the Ethernet frame may be transmitted to the receiving device by using the deployed Ethernet.
  • the transmitting device and The transmission of CPRI data can be implemented between the receiving devices by using various network devices deployed in the Ethernet (for example, a mobile bearer network). Since the existing Ethernet is used between the sending device and the receiving device, and the existing Ethernet is widely distributed, the distance between the transmitting device and the receiving device is not limited when the data is transmitted. Therefore, by using the foregoing solution, A connection between a distributed deployment RRU and a centrally deployed BBU.
  • the transmitting device is the first device that transmits an Ethernet frame carrying CPRI data, instead of the first device that transmits the CPRI data.
  • the sending device may be a BBU or an RRU, or may be a network device (such as a Packet Transport Network (PTN) device) in an Ethernet connected to the BBU and the RRU.
  • PTN Packet Transport Network
  • the transmitting device needs to encapsulate the CPRI data in an Ethernet frame.
  • the receiving device corresponding to the sending device, is the last device that receives the Ethernet frame carrying the CPRI data, and is not the last device that receives the CPRI data.
  • the receiving device may be a BBU or an RRU, or may be a network device (such as a PTN device) in an Ethernet connected to the BBU and the RRU.
  • the receiving device needs to decapsulate the received Ethernet frame to obtain the CPRI data.
  • the CPRI data related to the embodiment of the present application is data transmitted between the BBU and the RRU through the CPRI interface.
  • FIG. 1a shows a communication network used by the data transmission method provided by the embodiment of the present application.
  • the communication network includes: a transmitting device, a receiving device, and an Ethernet.
  • the process of data transmission in the communication network includes:
  • the sending device After the sending device obtains the CPRI data to be sent, the CPRI data is encapsulated in an Ethernet frame and transmitted to the receiving device through the Ethernet;
  • the receiving device After receiving the Ethernet frame, the receiving device decapsulates the Ethernet frame to obtain the CPRI data.
  • the CPRI data is encapsulated into an Ethernet frame, and the format of the encapsulated Ethernet frame is as shown in FIG. 1b, and the Ethernet frame includes a preamble and a destination media access control (MAC).
  • a field such as an address, a source MAC address, a payload data, and a Frame Check Sequence (FCS), wherein the CPRI data is carried in a payload data field of the Ethernet frame.
  • FCS Frame Check Sequence
  • the sending device when the sending device encapsulates the CPRI data, the determined feature information of the CPRI data and the CPRI data are encapsulated into the Ethernet frame, and the encapsulated Ethernet frame is The format is as shown in FIG. 1c, and the Ethernet frame includes a preamble, a target MAC address, a source MAC address, a data feature, a payload data, and a field such as FCS, that is, a format of the Ethernet frame shown in FIG. 1b.
  • the Ethernet frame further includes the data feature field, and the feature information of the CPRI data is encapsulated in the data feature field of the Ethernet frame.
  • the feature information of the CPRI data may also be carried in a payload data portion of the Ethernet frame.
  • the feature information of the CPRI data may include at least one or more items: data length, data type, synchronization information, timestamp, and sequence number.
  • the data length is used to indicate the length of the CPRI data.
  • the data type is used to indicate the type of the CPRI data.
  • the timestamp is used to indicate a time when the sending device receives the CPRI data.
  • the synchronization information is used to indicate a timing relationship between the CPRI data and previous CPRI data or with subsequent CPRI data.
  • the sequence number is used to indicate a sequence number of the encapsulation process performed by the sending device when the CPRI data is used.
  • the feature information of the CPRI data includes a data length, a data type, a synchronization information/time stamp, and a serial number
  • the content included in the data feature field in the Ethernet frame is as shown in FIG. 1c.
  • FIG. 1b and FIG. 1c are only examples for further explaining the Ethernet frame.
  • the encapsulated Ethernet frame format is not limited in the embodiment of the present application.
  • the sending device may be a BBU of the base station or a network device connected to the BBU:
  • the sending device if the sending device is a BBU of the base station, the sending device generates the CPRI data, and encapsulates the CPRI data in the Ethernet frame.
  • the BBU If the sending device is a network device connected to the BBU of the base station, the BBU generates the CPRI data and sends the CPRI data to the sending device, where the sending device receives the CPRI data and encapsulates the CPRI data in the Ethernet frame.
  • the receiving device may be an RRU of the base station or a network device connected to the RRU.
  • the receiving device receives the Ethernet frame, decapsulates the Ethernet frame, obtains the CPRI data, and converts the CPRI data into a radio frequency signal, and the radio frequency The signal is transmitted to the antenna for transmission.
  • the receiving device receives the Ethernet frame, decapsulates the Ethernet frame, obtains the CPRI data, and sends the CPRI data to the RRU; the RRU receives the CPRI data and converts the CPRI data into a radio frequency signal, and transmits the radio frequency signal to an antenna for transmission.
  • the sending device may be an RRU of the base station or a network device connected to the RRU.
  • the sending device receives a data signal of the mobile device, processes the CPRI data, and encapsulates the CPRI data in the Ethernet frame.
  • the sending device is a network device connected to the RRU, the RRU receives a data signal of the mobile device, processes the CPRI data, and sends the RRU to the sending device; the sending device Encapsulating the CPRI data in the Ethernet frame.
  • the receiving device may be a BBU of the base station or a network device connected to the BBU.
  • the receiving device receives the Ethernet frame, and decapsulates the Ethernet frame to obtain the CPRI data.
  • the receiving device receives the Ethernet frame, decapsulates the Ethernet frame to obtain the CPRI data, and sends the CPRI data to the BBU .
  • the transmitting device may encapsulate the CPRI data to be transmitted in the Ethernet frame, so that the Ethernet frame may be transmitted to the receiving device by using an already deployed Ethernet.
  • the transmission of the CPRI data can be implemented between the transmitting device and the receiving device by using each network device deployed in the Ethernet (for example, a mobile bearer network). Since the existing Ethernet is used between the sending device and the receiving device, and the existing Ethernet is widely distributed, the distance between the transmitting device and the receiving device is not limited when the data is transmitted. Therefore, by using the foregoing solution, RRU for distributed deployment and BBU for centralized deployment the connection between.
  • the flow of a data transmission method provided by the embodiment of the present application is described below with reference to FIG. 2 .
  • the method is applied to a scenario in which the distance between the RRU and the BBU of the base station is large, for example, multiple base stations deploy the BBU in a centralized deployment manner and deploy the respective RRUs in a distributed deployment manner.
  • the method includes:
  • the sending device encapsulates the CPRI data to be sent in an Ethernet frame.
  • the transmitting device and the receiving device may be corresponding to the sending device and the receiving device in the communication network shown in FIG. 1a, and the sending device may be a BBU or a network device connected to the BBU.
  • the receiving device is a RRU or a network device connected to the RRU; or the sending device is an RRU or a network device connected to the RRU.
  • the receiving device is a BBU or a network device connected to the BBU.
  • the sending device encapsulates the CPRI data into the Ethernet frame by using the following steps, including:
  • the transmitting device determines feature information of the CPRI data
  • the transmitting device encapsulates the feature information and the CPRI data in the Ethernet frame.
  • the feature information includes at least one or more of the following: a data length, a data type, synchronization information, a timestamp, and a sequence number.
  • the data length is used to indicate the length of the CPRI data.
  • the data type is used to indicate the type of the CPRI data.
  • the timestamp is used to indicate a time when the sending device receives the CPRI data.
  • the synchronization information is used to indicate a timing relationship between the CPRI data and previous CPRI data or with subsequent CPRI data.
  • the sequence number is used to indicate a sequence number of the encapsulation process performed by the sending device when the CPRI data is used.
  • the transmitting device when the transmitting device needs to continuously transmit a large amount of CPRI data, the transmitting device encapsulates the large amount of CPRI data in one or more Ethernet frames.
  • the large number of CPRI data is obtained, and the serial number is included in the Ethernet frame, so that the receiving device receives multiple After the Ethernet frame, the original CPRI data can be obtained by decapsulating according to the sequence of the serial numbers.
  • the sending device does not need to change the content and data format of the CPRI data, encapsulates the CPRI data in the Ethernet frame, and transmits the CPRI data carried in the Ethernet frame via Ethernet.
  • the efficiency of transmitting the CPRI data can be improved, and the efficiency of decapsulating the receiving device to obtain the CPRI data is also improved, and the CPRI service can be fully transparently carried.
  • the CPRI data includes CPRI data within a time window. That is, when the sending device has the CPRI data to be sent for a period of time, the sending device slices the CPRI data to be sent according to the fixed time window, and then encapsulates the CPRI data slice, so that the CPRI service can be implemented. Packetized bearer.
  • the value of the time window is related to the size of the CPRI data encapsulated into the Ethernet frame.
  • the value of the time window is too large, the encapsulated Ethernet frame is too long, which is not conducive to transmission in the Ethernet; when the value of the time window is too small, the CPRI data of the set size needs to be transmitted. Encapsulation is transmitted in multiple Ethernet frames, resulting in excessive resource overhead and reduced transmission efficiency. Therefore, the value of the time window may be specifically set according to the current service characteristics of the Ethernet, that is, the payload content of the encapsulated in each Ethernet frame is within a normal range, for example, the time window.
  • the value can be 1.25 microseconds ( ⁇ s), when the CPRI service is CPRI option1
  • the data transmission rate of the CPRI service is 614.4 megabits per second (Mbit/s)
  • the payload content in the subsequent Ethernet frame is 768 bits, which is within the normal range.
  • the feature information in each Ethernet frame includes the synchronization information, the timestamp, and the serial number of the CPRI data.
  • the multiple Ethernet frames may be decapsulated according to the feature information in each Ethernet frame according to the sequence of the feature information. Get accurate CPRI data to be sent.
  • the sending device sends the Ethernet frame to a receiving device.
  • the sending device may send the Ethernet frame to the receiving device by using the Ethernet that has been deployed, that is, the sending device uses each network device in the Ethernet to transmit
  • the Ethernet frame is a PTN device when the Ethernet is a PTN.
  • the sending device when the sending device encapsulates the feature information of the CPRI data and the CPRI data into the Ethernet frame, the receiving device, when performing S203, includes:
  • the receiving device decapsulates the Ethernet frame according to the feature information to obtain the CPRI data.
  • the receiving device decapsulates the Ethernet frame according to the feature information, and can accurately obtain the original CPRI data.
  • the sending device may encapsulate the CPRI data to be sent in an Ethernet frame, so that the Ethernet frame can be transmitted to the receiving device by using the deployed Ethernet.
  • the transmission of the CPRI data can be implemented between the transmitting device and the receiving device by using each network device deployed in the Ethernet (for example, a mobile bearer network). Since the existing Ethernet is used between the sending device and the receiving device, and the existing Ethernet is widely distributed, the distance between the transmitting device and the receiving device is not limited when the data is transmitted. Therefore, by using the foregoing solution, A connection between a distributed deployment RRU and a centrally deployed BBU.
  • the embodiment of the present application provides a sending device, where the sending device can be applied to the communications network shown in FIG. 1a, and is used to implement the data transmission method shown in FIG.
  • the sending device 300 includes: a processing unit 301 and a sending unit 302, where
  • the processing unit 301 is configured to encapsulate the CPRI data to be sent in an Ethernet frame.
  • the sending unit 302 is configured to send the Ethernet frame.
  • the processing unit 301 is specifically configured to: determine feature information of the CPRI data; and encapsulate the feature information and the CPRI data in the Ethernet frame.
  • the feature information includes at least one or more of the following: a data length, a data type, synchronization information, a timestamp, and a sequence number; wherein the timestamp is used to indicate that the sending device receives the CPRI data.
  • a data length a data length
  • a data type a data type
  • synchronization information a timestamp
  • a sequence number a sequence number
  • the CPRI data includes CPRI data within a time window.
  • the sending device 300 is a BBU or a network device connected to the BBU; or the sending device 300 is an RRU or a network device connected to the RRU.
  • the sending unit 302 is specifically configured to: send the Ethernet frame by using an Ethernet.
  • the sending device provided by the embodiment of the present application can encapsulate the CPRI data to be sent in an Ethernet frame, so that the Ethernet frame can be transmitted to the receiving device by using the already deployed Ethernet.
  • the transmission of the CPRI data can be implemented between the transmitting device and the receiving device by using each network device deployed in the Ethernet (for example, a mobile bearer network). Since the existing Ethernet is used between the sending device and the receiving device, and the existing Ethernet is widely distributed, the distance between the transmitting device and the receiving device is not limited when the data is transmitted, and therefore, the transmitting device is used.
  • the connection between the distributed deployment RRU and the centrally deployed BBU can be realized.
  • the embodiment of the present application provides a receiving device, which can be applied to the communication network shown in FIG. 1a, and is used to implement the data transmission method shown in FIG.
  • the receiving device 400 includes: a receiving unit 401 and a processing unit 402, where
  • the receiving unit 401 is configured to receive an Ethernet frame, where the Ethernet frame includes CPRI data;
  • the processing unit 402 is configured to decapsulate the Ethernet frame to obtain the CPRI data.
  • the processing unit 402 is configured to: acquire feature information of the CPRI data included in the Ethernet frame, and decapsulate the Ethernet frame according to the feature information to obtain the CPRI. data.
  • the feature information includes at least one or more of the following: a data length, a data type, synchronization information, a timestamp, and a sequence number; wherein the timestamp is used to indicate the sending of the Ethernet frame. The moment when the transmitting device receives the CPRI data.
  • the CPRI data includes CPRI data within a time window.
  • the receiving device 400 is an RRU or a network device connected to the RRU; or the receiving device 400 is a BBU or a network device connected to the BBU.
  • the receiving unit 401 is specifically configured to: receive the Ethernet frame by using an Ethernet.
  • the receiving device After receiving the Ethernet frame carrying the CPRI data sent by the sending device, the receiving device in the embodiment of the present application may decapsulate the Ethernet frame to obtain the CPRI data.
  • the transmitting device can transmit the Ethernet frame to the receiving device using the already deployed Ethernet.
  • the transmission of the CPRI data can be implemented between the transmitting device and the receiving device by using each network device deployed in the Ethernet (for example, a mobile bearer network). Since the existing Ethernet is used between the sending device and the receiving device, and the existing Ethernet is widely distributed, the distance between the transmitting device and the receiving device is not limited when the data is transmitted. Therefore, through the receiving device, A connection between a distributed deployment RRU and a centrally deployed BBU can be implemented.
  • the embodiment of the present application further provides another sending device, where the sending device may be a BBU in a scenario where the base station needs to transmit a radio frequency signal, or in a scenario where the base station needs to receive data sent by the mobile device.
  • the RRU is used to implement the data transmission method as shown in FIG. 2.
  • the sending device 500 includes: a service processing module 501, a data encapsulating module 502, and a photoelectric conversion module 503, wherein the service processing module 501 is configured to implement a service of the sending device, and generate a to-be-sent CPRI data.
  • Said The data encapsulating module 502 is configured to encapsulate the CPRI data in an Ethernet frame.
  • the photoelectric conversion module 503 is configured to implement conversion between an optical signal and an electrical signal, that is, convert an electrical signal carrying the Ethernet frame into an optical signal carrying the Ethernet frame, so that the optical signal can pass The fiber is transmitted to the next network device.
  • the embodiment of the present application further provides another receiving device, where the receiving device may be an RRU in a scenario where the base station needs to transmit a radio frequency signal, or in a scenario where the base station needs to receive data sent by the mobile device.
  • the BBU is used to implement the data transmission method as shown in FIG. 2.
  • the receiving device 600 includes: a photoelectric conversion module 601, a data decapsulation module 602, and a service processing module 603, wherein the photoelectric conversion module 601 is configured to receive a portable Ethernet transmitted through an optical fiber.
  • the optical signal of the frame After the optical signal of the frame, the optical signal is converted into an electrical signal carrying the Ethernet frame; the data decapsulation module 602 is configured to decapsulate the Ethernet frame to obtain CPRI data, and a specific solution For the encapsulation process, reference may be made to the description in the embodiment of the data transmission method shown in FIG. 2, which is not described here.
  • the service processing module 603 is configured to implement the service of the receiving device according to the CPRI data.
  • the embodiment of the present application further provides another sending device, where the sending device may be a network device connected to the BBU in a scenario where the base station needs to transmit a radio frequency signal, or the base station needs to receive the mobile device to send.
  • the network device connected to the RRU in the scenario of the data is used to implement the data transmission method as shown in FIG. 2.
  • the transmitting device 700 includes: a photoelectric conversion module 701, a data encapsulating module 702, and an Ethernet service processing module 703.
  • the photoelectric conversion module 701 is configured to carry a BBU or an RRU through an optical fiber.
  • the optical signal of the CPRI data is converted to obtain an electrical signal carrying the CPRI data.
  • the data encapsulating module 702 is configured to encapsulate the CPRI data in an Ethernet frame.
  • the Ethernet service processing module 703 is configured to implement an Ethernet service of the sending device according to the Ethernet frame.
  • the embodiment of the present application further provides another receiving device, where the receiving device may be a network device connected to the RRU in a scenario where the base station needs to transmit a radio frequency signal, or the base station needs to receive the mobile device to send.
  • the network device connected to the BBU in the scenario of the data is used to implement the data transmission method as shown in FIG. 2.
  • the receiving device 800 includes: an Ethernet service processing module 801, a data decapsulation module 802, and a photoelectric conversion module 803, wherein the Ethernet service processing module 801 is configured to receive an Ethernet carrying CPRI data.
  • the network frame implements the Ethernet service of the receiving device.
  • the data decapsulation module 802 is configured to decapsulate the Ethernet frame to obtain the CPRI data.
  • the specific decapsulation process may refer to the description in the data transmission method embodiment shown in FIG. Let me repeat.
  • the photoelectric conversion module 803 is configured to convert an electrical signal carrying the CPRI data to obtain an optical signal carrying the CPRI data, and transmit the optical signal to the BBU or the RRU through an optical fiber.
  • the data encapsulation module and the data decapsulation module in the above embodiments may be implemented by software, or may be implemented by an Application Specific Integrated Circuits (ASIC) chip or a Field-Programmable Gate Array (FPGA). This embodiment of the present application does not limit this.
  • ASIC Application Specific Integrated Circuits
  • FPGA Field-Programmable Gate Array
  • the division of the unit in the embodiment of the present application is schematic, and only one logical function is divided, and the actual implementation may have another division manner.
  • the functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or The form realization of the software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • a computer readable storage medium A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .
  • the embodiment of the present application further provides a communication network.
  • FIG. 9 in the communication network, when the BBU and the RRU send the CPRI data to the opposite end, the method is as shown in FIG. 5 .
  • the structure of the transmitting device; and the BBU and the RRU adopt the structure of the receiving device as shown in FIG. 6 when receiving the CPRI data sent by the opposite end.
  • For the process of transmitting the CPRI data between the BBU and the RRU refer to the arrow pointing in FIG. 9 and the description in the foregoing method embodiment, and details are not described herein again.
  • network devices other than the BBU and the RRU and Ethernet are deployed, and no change may be required.
  • the CPRI data to be sent may be encapsulated in an Ethernet frame, so that the Ethernet frame can be transmitted to the receiving device of the opposite end by using the deployed Ethernet.
  • the transmission of the CPRI data can be implemented between the transmitting device and the receiving device by using each network device deployed in the Ethernet (for example, a mobile bearer network). Since the existing Ethernet is used between the sending device and the receiving device, and the existing Ethernet is widely distributed, the distance between the transmitting device and the receiving device is not limited when the data is transmitted. Therefore, by using the foregoing solution, A connection between a distributed deployment RRU and a centrally deployed BBU.
  • the embodiment of the present application further provides a communication network, as shown in FIG. 10, in the communication network, when the network device connected to the BBU and the RRU sends the CPRI data to the peer end,
  • For the process of transmitting the CPRI data between the BBU and the RRU refer to the arrow pointing in FIG. 10 and the description in the foregoing method embodiment, and details are not described herein again.
  • devices ie, BBUs and RRUs
  • Ethernets other than the network devices connected to the BBU and the RRU are deployed, and no change may be required.
  • the CPRI data to be sent may be encapsulated in an Ethernet frame, so that the Ethernet frame can be transmitted to the deployed Ethernet.
  • the receiving device at the opposite end.
  • the transmission of the CPRI data can be implemented between the transmitting device and the receiving device by using each network device deployed in the Ethernet (for example, a mobile bearer network). Since the existing Ethernet is used between the sending device and the receiving device, and the existing Ethernet is widely distributed, the distance between the transmitting device and the receiving device is not limited when the data is transmitted. Therefore, by using the foregoing solution, A connection between a distributed deployment RRU and a centrally deployed BBU.
  • the embodiment of the present application further provides a communication network, as shown in FIG. 11, in the communication network, when the BBU sends the CPRI data to the opposite side, the transmitting device shown in FIG. 5 is used.
  • Structure at When receiving the CPRI data sent by the opposite side, the structure of the receiving device shown in FIG. 6 is adopted; when the network device connected to the RRU helps the RRU to send the CPRI data to the opposite side, the sending is as shown in FIG.
  • the structure of the device when the RRU is received to receive the CPRI data sent by the opposite side, adopts the structure of the receiving device as shown in FIG.
  • For the process of transmitting the CPRI data between the BBU and the RRU through the network device refer to the arrow pointing in FIG. 11 and the description in the foregoing method embodiment, and details are not described herein again.
  • the CPRI data to be sent may be encapsulated in an Ethernet frame, so that the Ethernet frame can be transmitted to the pair by using the deployed Ethernet.
  • the receiving device at the end.
  • the transmission of the CPRI data can be implemented between the transmitting device and the receiving device by using each network device deployed in the Ethernet (for example, a mobile bearer network). Since the existing Ethernet is used between the sending device and the receiving device, and the existing Ethernet is widely distributed, the distance between the transmitting device and the receiving device is not limited when the data is transmitted. Therefore, by using the foregoing solution, A connection between a distributed deployment RRU and a centrally deployed BBU.
  • the embodiment of the present application further provides a communication network.
  • the transmitting device shown in FIG. 5 is used in the communication network.
  • the structure of the transmitting device shown in the figure is as follows: When the BBU is configured to receive the CPRI data transmitted by the opposite party, the structure of the receiving device shown in FIG. 8 is adopted.
  • the process of transmitting the CPRI data between the BBU and the RRU through the network device refer to the arrow pointing in FIG. 12 and the description in the foregoing method embodiment, and details are not described herein again.
  • the CPRI data to be sent may be encapsulated in an Ethernet frame, so that the Ethernet frame can be transmitted to the pair by using the deployed Ethernet.
  • the receiving device at the end.
  • the transmission of the CPRI data can be implemented between the transmitting device and the receiving device by using each network device deployed in the Ethernet (for example, a mobile bearer network). Since the existing Ethernet is used between the sending device and the receiving device, and the existing Ethernet is widely distributed, the distance between the transmitting device and the receiving device is not limited when the data is transmitted. Therefore, by using the foregoing solution, A connection between a distributed deployment RRU and a centrally deployed BBU.
  • the embodiment of the present invention further provides a sending device, which is used to implement the data transmission method shown in FIG. 2, and has the function of the sending device shown in FIG. 3, as shown in FIG.
  • the transmitting device 1300 includes a communication interface 1301, a processor 1302, a bus 1303, a memory 1304, and a photoelectric conversion module 1305.
  • the communication interface 1301, the processor 1302, the memory 1304, and the photoelectric conversion module 1305 are connected to each other through the bus 1303.
  • the bus 1303 may be a peripheral component interconnect (PCI) Bus or extended industry standard architecture (EISA) bus.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 13, but it does not mean that there is only one bus or one type of bus.
  • the communication interface 1301 is configured to perform communication interaction with other devices.
  • the processor 1302 is configured to implement the data transmission method as shown in FIG. 2, including: encapsulating the CPRI data to be sent as an Ethernet frame; and transmitting the Ethernet frame to the receiving device.
  • the processor 1302 is configured to: determine feature information of the CPRI data when the CPRI data to be sent is encapsulated into an Ethernet frame; and encapsulate the feature information and the CPRI data into the Ethernet frame.
  • the feature information includes at least one or more of the following: a data length, a data type, synchronization information, a timestamp, and a sequence number; wherein the timestamp is used to indicate that the sending device receives the CPRI data.
  • a data length a data length
  • a data type a data type
  • synchronization information a timestamp
  • a sequence number a sequence number
  • the CPRI data includes CPRI data within a time window.
  • the processor 1302 is configured to: when the Ethernet frame is sent to the receiving device, send the Ethernet frame to the receiving device by using an Ethernet.
  • the sending device 1300 is a BBU or a network device connected to the BBU
  • the receiving device is an RRU or a network device connected to the RRU
  • the sending device 1300 is an RRU or a network device connected to the RRU
  • the receiving device is a BBU or a network device connected to the BBU.
  • the photoelectric conversion module 1304 is configured to perform conversion between an optical signal and an electrical signal.
  • the photoelectric conversion module 1304 is configured to convert an electrical signal carrying the encapsulated Ethernet frame to obtain an optical signal carrying the Ethernet frame, thereby
  • the transmitting device 1300 can cause the optical signal to be transmitted through an optical fiber to a connected network device.
  • the photoelectric conversion module 1304 is configured to: after the transmitting device 1300 receives the optical signal carrying the CPRI data sent by the BBU or the RRU, Converting the optical signal into an electrical signal carrying the CPRI data, so that the data encapsulation module and the Ethernet service processing module in the sending device 1300 can identify the CPRI data.
  • the memory 1304 is configured to store a program or the like.
  • the program can include program code, the program code including computer operating instructions.
  • the memory 1304 may include a random access memory (RAM), and may also include a non-volatile memory, such as at least one disk storage.
  • the processor 1302 executes an application stored in the memory 1304 to implement the above functions, thereby implementing the data transmission method as shown in FIG. 2.
  • the sending device provided by the embodiment of the present application can encapsulate the CPRI data to be sent in an Ethernet frame, so that the Ethernet frame can be transmitted to the receiving device by using the already deployed Ethernet.
  • the transmission of the CPRI data can be implemented between the transmitting device and the receiving device by using each network device deployed in the Ethernet (for example, a mobile bearer network). Since the existing Ethernet is used between the sending device and the receiving device, and the existing Ethernet is widely distributed, the distance between the transmitting device and the receiving device is not limited when the data is transmitted, and therefore, the transmitting device is used.
  • the connection between the distributed deployment RRU and the centrally deployed BBU can be realized.
  • the embodiment of the present invention further provides a receiving device, which is used to implement the method shown in FIG. 2
  • the data transmission method has the function of the receiving device as shown in FIG. 4 .
  • the receiving device 1400 includes: a communication interface 1401 , a processor 1402 , a bus 1403 , a memory 1404 , and a photoelectric conversion module 1405 . .
  • the communication interface 1401, the processor 1402, the memory 1404, and the photoelectric conversion module 1405 are connected to each other through the bus 1403.
  • the bus 1403 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 14, but it does not mean that there is only one bus or one type of bus.
  • the communication interface 1401 is configured to perform communication interaction with other devices.
  • the processor 1402 is configured to implement the data transmission method as shown in FIG. 2, including: receiving an Ethernet frame sent by the sending device; decapsulating the Ethernet frame to obtain CPRI data.
  • the processor 1402 is configured to: acquire feature information of the CPRI data included in the Ethernet frame, when decapsulating the Ethernet frame to obtain the CPRI data;
  • the feature information includes at least one or more of the following: a data length, a data type, synchronization information, a timestamp, and a sequence number; wherein the timestamp is used to indicate that the sending device receives the CPRI data.
  • a data length a data length
  • a data type a data type
  • synchronization information a timestamp
  • a sequence number a sequence number
  • the CPRI data includes CPRI data within a time window.
  • the processor 1402 when receiving the Ethernet frame sent by the sending device, is specifically configured to: receive, by using an Ethernet, the Ethernet frame sent by the sending device.
  • the sending device is a BBU or a network device connected to the BBU
  • the receiving device 1400 is an RRU or a network device connected to the RRU; or when the sending device is an RRU or a network device connected to the RRU;
  • the receiving device is a BBU or a network device connected to the BBU.
  • the photoelectric conversion module 1404 is configured to perform conversion between an optical signal and an electrical signal.
  • the photoelectric conversion module 1304 is configured to convert an electrical signal carrying the encapsulated Ethernet frame to obtain an optical signal carrying the Ethernet frame, thereby
  • the data decapsulation module in the receiving device 1400 can be made to recognize the Ethernet frame.
  • the photoelectric conversion module 1404 is configured to carry the CPRI after decapsulating the receiving device 1400 to obtain the CPRI data.
  • the electrical signal of the data is converted to an optical signal carrying the CPRI data such that the optical signal can be transmitted over the optical fiber to the BBU or the RRU.
  • the memory 1404 is configured to store a program or the like.
  • the program can include program code, the program code including computer operating instructions.
  • the memory 1404 may include a random access memory (RAM), and may also include a non-volatile memory, such as at least one disk storage.
  • the processor 1402 executes an application stored in the memory 1404 to implement the above functions, thereby implementing the data transmission method as shown in FIG. 2.
  • the receiving device After receiving the Ethernet frame carrying the CPRI data, the receiving device provided by the embodiment of the present application may decapsulate the Ethernet frame to obtain the CPRI data.
  • the transmitting device can utilize the already deployed Ethernet
  • the Ethernet frame is transmitted to a receiving device.
  • the transmission of the CPRI data can be implemented between the transmitting device and the receiving device by using each network device deployed in the Ethernet (for example, a mobile bearer network). Since the existing Ethernet is used between the sending device and the receiving device, and the existing Ethernet is widely distributed, the distance between the transmitting device and the receiving device is not limited when the data is transmitted. Therefore, through the receiving device, A connection between a distributed deployment RRU and a centrally deployed BBU can be implemented.
  • the data transmission method and device are provided by the sending device, and the sending device can encapsulate the CPRI data to be sent in an Ethernet frame, so that the Ethernet frame can be transmitted to the receiving device by using the deployed Ethernet.
  • the transmission of the CPRI data can be implemented between the transmitting device and the receiving device by using each network device deployed in the Ethernet (for example, a mobile bearer network). Since the existing Ethernet is used between the sending device and the receiving device, and the existing Ethernet is widely distributed, the distance between the transmitting device and the receiving device is not limited when the data is transmitted. Therefore, by using the foregoing solution, A connection between a distributed deployment RRU and a centrally deployed BBU.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Abstract

本申请提供了一种数据传输方法及装置，用以解决现有技术中在基站的BBU集中放置时，分布式部署的RRU和集中式部署的BBU之间距离较大，无法实现RRU和BBU之间连接的问题。该方法为：发送设备可以将待发送的CPRI数据封装在以太网帧中，从而可以利用已经部署的以太网将所述以太网帧传输至接收设备。这样，发送设备和接收设备之间可以利用部署在所述以太网中的各网络设备，实现CPRI数据的传输。由于所述发送设备和所述接收设备之间采用现有的以太网，且现有的以太网分布广泛，传输数据时不限定发送设备和接收设备之间的距离，因此，通过上述方案，可以实现分布式部署的RRU和集中式部署的BBU之间的连接。

Description

一种数据传输方法及装置
本申请要求于2016年12月09日提交中国专利局、申请号为201611130956.9、申请名称为“一种数据传输方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种数据传输方法及装置。
背景技术
无线通信系统中的基站中包括基带处理单元(Base Band Unit，BBU)和射频拉远单元(Remote Radio Unit，RRU)。BBU用于完成基带处理(如编码、复用、调制和扩频等)生成基带信号，信令处理、本地和远程操作维护，以及基站的工作状态监控等功能。RRU用于将基带信号转换成射频信号传送给天线发射，并在移动设备发送的数据信号通过天线接收后，先对所述数据信号进行处理，在将处理后的数据传送给所述BBU。
同一个基站的BBU与RRU之间可以采用通用公共射频接口(Common Public Radio Interface，CPRI)传输各种数据(包括所述BBU传送给所述RRU的数据，和所述RRU传送给所述BBU的数据)，其中，所述数据又可以称为CPRI数据。
传统的基站中的BBU和RRU都是集中放置。随着移动通信网络的发展，高带宽、网络扁平化是无线网络的发展趋势。这将推动基站的分布更加密集。由于每个基站的BBU和RRU分离，因此在未来的无线通信系统中，多个远端的基站的BBU可以集中式部署在云端，而每个基站的RRU分布式部署于各自内部。显然，在上述无线通信系统中，需要有传输网络将分布式部署的RRU与集中式放置的BBU连接。
由于传统的基站中的BBU和RRU都是集中放置，两者之间的距离足够近，因此BBU和RRU之间采用光纤连接。然而，在上述无线通信系统中，分布式部署的RRU和集中式部署的BBU之间的距离较大，仍采用光纤连接会造成很大的费用，造成无法实现分布式部署的RRU和集中式部署的BBU之间的连接。
发明内容
本申请提供一种数据传输方法及装置，用以解决现有技术中在基站的BBU集中放置时，分布式部署的RRU和集中式部署的BBU之间距离较大，无法实现RRU和BBU之间连接的问题。
本申请提供的具体技术方案如下：
第一方面，本申请实施例提供了一种数据传输方法，该方法包括：
发送设备将待发送的CPRI数据封装在以太网帧中，并发送所述以太网帧。
通过上述方法，发送设备可以将待发送的CPRI数据封装在以太网帧中，从而可以利用已经部署的以太网将所述以太网帧传输至接收设备。这样，所述发送设备和接收设备之间可以利用部署在所述以太网(例如移动承载网络)中的各网络设备，实现CPRI数据的传输。由于所述发送设备和所述接收设备之间采用现有的以太网，且现有的以太网分布广泛，传输数据时不限定发送设备和接收设备之间的距离，因此，通过上述方法，可以实现分布式部署的RRU和集中式部署的BBU之间的连接。
在一个可能的设计中，所述发送设备通过如下方法，将所述CPRI数据封装在所述以太网帧中：
所述发送设备先确定所述CPRI数据的特征信息，然后将所述特征信息和所述CPRI数据封装在所述以太网帧中。
通过上述方法，所述发送设备不仅可以将携带所述CPRI数据的所述以太网帧发送给接收设备，还可以将所述CPRI数据的特征信息通知所述接收设备，以使所述接收设备可以根据所述CPRI数据的特征信息解封装所述以太网帧，得到所述CPRI数据。
在一个可能的设计中，所述特征信息包括以下至少一项或多项：数据长度、数据类型、同步信息、时间戳、序列号；其中，所述数据长度，用于表示所述CPRI数据的长度。所述数据类型，用于表示所述CPRI数据的类型。所述时间戳，用于表示所述发送设备接收所述CPRI数据的时刻。所述同步信息，用于表示所述CPRI数据与之前的CPRI数据或与后续的CPRI数据之间的定时关系。所述序列号，用于表示所述发送设备对所述CPRI数据时进行封装处理的顺序编号。
通过所述特征信息包含上述内容，可以保证所述接收设备在接收到所述以太网帧后，可以根据所述CPRI数据的特征信息，准确地解封装所述以太网帧，得到所述CPRI数据。
在一个可能的设计中，所述CPRI数据包括一个时间窗内的CPRI数据，即当所述发送设备在持续一段时间内一直存在待发送的CPRI数据时，所述发送设备按照固定时间窗对待发送的CPRI数据进行切片，然后对CPRI数据切片进行封装，从而可以实现CPRI业务的分组化承载。
在一个可能的设计中，所述发送设备为基带处理单元BBU或与BBU相连的网络设备；或者所述发送设备为RRU或与RRU相连的网络设备。
这样，上述方法可以实现分布式部署的RRU和集中式部署的BBU之间的CPRI数据的传输。
在一个可能的设计中，所述发送设备通过以太网发送所述以太网帧。
通过上述方法，所述发送设备和接收设备之间可以利用已经部署的所述以太网，实现所述CPRI数据的传输。
第二方面，本申请实施例提供了一种数据传输方法，该方法包括：
接收设备接收包括CPRI数据的以太网帧，并将所述以太网帧进行解封装，得到所述CPRI数据。
通过上述方法，接收设备在接收到携带CPRI数据的以太网帧后，可以解封装所述以太网帧得到所述CPRI数据。所述发送设备可以利用已经部署的以太网将所述以太网帧传输至接收设备。这样，所述发送设备和接收设备之间可以利用部署在所述以 太网(例如移动承载网络)中的各网络设备，实现CPRI数据的传输。由于所述发送设备和所述接收设备之间采用现有的以太网，且现有的以太网分布广泛，传输数据时不限定发送设备和接收设备之间的距离，因此，通过上述方法，可以实现分布式部署的RRU和集中式部署的BBU之间的连接。
在一个可能的设计中，所述接收设备通过如下方法，将所述以太网帧进行解封装，得到所述CPRI数据：
所述接收设备先获取所述以太网帧中包含的所述CPRI数据的特征信息，然后，根据所述特征信息对所述以太网帧进行解封装，得到所述CPRI数据。
通过上述方法，所述接收设备可以得到准确地所述CPRI数据。
在一个可能的设计中，所述特征信息包括以下至少一项或多项：数据长度、数据类型、同步信息、时间戳、序列号；其中，所述数据长度，用于表示所述CPRI数据的长度。所述数据类型，用于表示所述CPRI数据的类型。所述时间戳，用于表示发送所述以太网帧的发送设备接收所述CPRI数据的时刻。所述同步信息，用于表示所述CPRI数据与之前的CPRI数据或与后续的CPRI数据之间的定时关系。所述序列号，用于表示所述发送设备对所述CPRI数据时进行封装处理的顺序编号。
通过所述特征信息包含上述内容，可以保证所述接收设备在接收到所述以太网帧后，可以根据所述CPRI数据的特征信息，准确地解封装所述以太网帧，得到所述CPRI数据。
在一个可能的设计中，所述CPRI数据包括一个时间窗内的CPRI数据。
通过上述方法，发送所述以太网帧的发送设备可以按照固定时间窗对待发送的CPRI数据进行切片，并按CPRI数据切片进行封装，从而可以实现CPRI业务的分组化承载。
在一个可能的设计中，所述接收设备为射频拉远单元RRU或与RRU相连的网络设备；或者所述接收设备为BBU或与BBU相连的网络设备。
这样，上述方法可以实现分布式部署的RRU和集中式部署的BBU之间的CPRI数据的传输。
在一个可能的设计中，所述接收设备通过以太网接收所述以太网帧。
通过上述方法，所述发送设备和接收设备之间可以利用已经部署的所述以太网，实现所述CPRI数据的传输。
第三方面，本申请实施例还提供了一种发送设备，该发送设备具有实现上述方法实例中发送设备行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现，所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一种可能的设计中，所述发送设备的结构中包括处理单元和发送单元，这些单元可以执行上述方法示例中的相应功能，具体参见方法示例中的详细描述，此处不做赘述。
在一种可能的设计中，当所述发送设备为BBU或RRU时，所述发送设备的结构中包括：业务处理模块、数据封装模块、光电转换模块。所述业务处理模块用于生成待发送的CPRI数据；所述数据封装模块，用于将所述CPRI数据封装在以太网帧中；所述光电转换模块，用于将携带所述以太网帧的电信号转换为携带所述以太网帧的光 信号。
在一个可能的设计中，当所述发送设备为与BBU或RRU相连的网络设备时，所述发送设备的结构中包括：光电转换模块、数据封装模块、以太网业务处理模块。所述光电转换模块，用于将所述BBU或RRU通过光纤发送的携带CPRI数据的光信号进行转换，得到携带所述CPRI数据的电信号；所述数据封装模块，用于将所述CPRI数据封装在以太网帧中；所述以太网业务处理模块，用于根据所述以太网帧，实现所述发送设备的以太网业务。
在一种可能的设计中，所述发送设备的结构中包括通信接口、处理器、总线、存储器以及光电转换模块。所述通信接口用于与其他设备进行通信交互，所述处理器被配置为支持所述发送设备执行上述方法中相应的功能。所述存储器与所述处理器耦合，其保存所述发送设备必要的程序指令和数据。所述光电转换模块用于进行光信号和电信号之间的转换。
第四方面，本申请实施例还提供了一种接收设备，该接收设备具有实现上述方法实例中接收设备行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现，所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一种可能的设计中，所述接收设备的结构中包括接收单元和处理单元，这些单元可以执行上述方法示例中的相应功能，具体参见方法示例中的详细描述，此处不做赘述。
在一种可能的设计中，当所述接收设备为BBU或RRU时，所述接收设备的结构中包括：光电转换模块、数据解封装模块、业务处理模块。所述光电转换模块，用于将所述接收设备通过光纤接收的携带以太网帧的光信号转换为携带所述以太网帧的电信号；所述数据解封装模块，用于将所述以太网帧进行解封装，得到CPRI数据；所述业务处理模块用于根据所述CPRI数据，实现所述接收设备的业务。
在一个可能的设计中，当所述接收设备为与BBU或RRU相连的网络设备时，所述接收设备的结构中包括：以太网业务处理模块、数据封装模块、光电转换模块。所述以太网业务处理模块，用于接收携带CPRI数据的以太网帧，实现所述接收设备的以太网业务；所述数据解封装模块，用于将所述以太网帧进行解封装，得到所述CPRI数据；所述光电转换模块，用于将携带所述CPRI数据的点信号进行转换，得到携带所述CPRI数据的光信号。
在一种可能的设计中，所述接收设备的结构中包括通信接口、处理器、总线、存储器以及光电转换模块。所述通信接口用于与其他设备进行通信交互，所述处理器被配置为支持所述接收设备执行上述方法中相应的功能。所述存储器与所述处理器耦合，其保存所述接收设备必要的程序指令和数据。所述光电转换模块用于进行光信号和电信号之间的转换。
第五方面，本申请实施例还提供了一种通信网络，在所述通信网络中包括：发送设备、接收设备以及以太网。
可选地，以上技术方案中提到的CPRI数据可以携带在以太网帧的净荷数据中。进一步地，所述以太网帧也可以包括数据特征字段，该数据特征字段可以携带在该以太网帧的净荷数据中，也可以携带在该以太网帧的其他字段中。
本申请实施例中，发送设备可以将待发送的CPRI数据封装在以太网帧中，从而可以利用已经部署的以太网将所述以太网帧传输至接收设备。这样，所述发送设备和接收设备之间可以利用部署在所述以太网(例如移动承载网络)中的各网络设备，实现CPRI数据的传输。由于所述发送设备和所述接收设备之间采用现有的以太网，且现有的以太网分布广泛，传输数据时不限定发送设备和接收设备之间的距离，因此，通过上述方案，可以实现分布式部署的RRU和集中式部署的BBU之间的连接。
附图说明
图1a为本申请实施例提供的一种通信网络示意图；
图1b为本申请实施例提供的一种以太网帧格式的示意图；
图1c为本申请实施例提供的另一种以太网帧格式的示意图；
图2为本申请实施例提供的一种数据传输方法的流程图；
图3为本申请实施例提供的第一种发送设备的结构图；
图4为本申请实施例提供的第一种接收设备的结构图；
图5为本申请实施例提供的第二种发送设备的结构图；
图6为本申请实施例提供的第二种接收设备的结构图；
图7为本申请实施例提供的第三种发送设备的结构图；
图8为本申请实施例提供的第三种接收设备的结构图；
图9为本申请实施例提供的第一种通信网络的示例图；
图10为本申请实施例提供的第二种通信网络的示例图；
图11为本申请实施例提供的第三种通信网络的示例图；
图12为本申请实施例提供的第四种通信网络的示例图；
图13为本申请实施例提供的第四种发送设备的结构图；
图14为本申请实施例提供的第四种接收设备的结构图。
具体实施方式
为了使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请作进一步地详细描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。
本申请实施例中提到的“发送设备”可以是光模块，或者单板上的硬件或软件功能模块；进一步地，“发送设备”可以是PTN设备或部署在PTN设备上的硬件模块或软件模块。本申请实施例中提到的“接收设备”可以是光模块，或者单板上的硬件或软件功能模块；进一步地，“接收设备”可以是PTN设备或部署在PTN设备上的硬件模块或软件模块。
本申请实施例提供一种数据传输方法及装置，用以解决在基站的BBU集中放置时，无法实现分布式部署的RRU和集中式部署的BBU之间连接的问题。其中，本申请所述方法和装置基于同一发明构思，由于方法及装置解决问题的原理相似，因此装置与方法的实施可以相互参见，重复之处不再赘述。
本申请实施例中，发送设备可以将待发送的CPRI数据封装在以太网帧中，从而可以利用已经部署的以太网将所述以太网帧传输至接收设备。这样，所述发送设备和 接收设备之间可以利用部署在所述以太网(例如移动承载网络)中的各网络设备，实现CPRI数据的传输。由于所述发送设备和所述接收设备之间采用现有的以太网，且现有的以太网分布广泛，传输数据时不限定发送设备和接收设备之间的距离，因此，通过上述方案，可以实现分布式部署的RRU和集中式部署的BBU之间的连接。
以下，对本申请中的部分用户进行解释说明，以便于本领域技术人员理解。
1)本申请实施例涉及的发送设备，是首个传输携带CPRI数据的以太网帧的设备，而非首个传输所述CPRI数据的设备。所述发送设备可以为BBU或RRU，也可以是与BBU和RRU相连的以太网中的网络设备(如分组传输网(Packet Transport Network，PTN)设备)。所述发送设备需要将所述CPRI数据封装在以太网帧中。
2)本申请实施例涉及的接收设备，与所述发送设备对应，是最后一个接收到携带所述CPRI数据的以太网帧的设备，而非最后一个接收所述CPRI数据的设备。所述接收设备可以为BBU或RRU，也可以是与BBU和RRU相连的以太网中的网络设备(如PTN设备)。所述接收设备需要将接收的所述以太网帧解封装，得到所述CPRI数据。
3)本申请实施例涉及的CPRI数据，为通过CPRI接口传输、BBU和RRU之间传输的数据。
图1a示出了本申请实施例提供的数据传输方法使用的通信网络，如图1a所示，在所述通信网络中包括：发送设备、接收设备以及以太网。在所述通信网络中进行数据传输的流程包括：
所述发送设备得到待发送的CPRI数据后，将所述CPRI数据封装在以太网帧中，并通过所述以太网传输给所述接收设备；
所述接收设备接收到所述以太网帧后，将所述以太网帧进行解封装，从而得到所述CPRI数据。
可选地，将CPRI数据封装到以太网帧中，封装后的所述以太网帧的格式如图1b所示，所述以太网帧包括前导码、目的媒体访问控制(Media Access Control，MAC)地址、源MAC地址、净荷数据以及帧校验序列(Frame Check Sequence，FCS)等字段，其中，所述CPRI数据携带在所述以太网帧的净荷数据字段中。
可选的，当所述发送设备在封装所述CPRI数据时，将确定的所述CPRI数据的特征信息和所述CPRI数据封装到所述以太网帧中，封装后的所述以太网帧的格式如图1c所示，所述以太网帧包括前导码、目标MAC地址、源MAC地址、数据特征、净荷数据以及FCS等字段，即相对于图1b所示的以太网帧的格式，所述以太网帧还包括所述数据特征字段，所述CPRI数据的特征信息封装在所述以太网帧的所述数据特征字段中。可选地，所述CPRI数据的特征信息也可以携带在所述以太网帧的净荷数据部分。
可选的，所述CPRI数据的特征信息可以包括一下至少一项或多项：数据长度、数据类型、同步信息、时间戳、序列号。其中，所述数据长度，用于表示所述CPRI数据的长度。所述数据类型，用于表示所述CPRI数据的类型。所述时间戳，用于表示所述发送设备接收所述CPRI数据的时刻。所述同步信息，用于表示所述CPRI数据与之前的CPRI数据或与后续的CPRI数据之间的定时关系。所述序列号，用于表示所述发送设备对所述CPRI数据时进行封装处理的顺序编号。
例如，当所述CPRI数据的特征信息包括数据长度，数据类型，同步信息/时间戳、序列号时，所述以太网帧中数据特征字段中包含的内容如图1c所示。
需要说明的是，图1b和图1c仅为进一步说明以太网帧的例子，本申请实施例中并不限定封装后的以太网帧格式。
在基站需要发射射频信号的场景一中，所述发送设备可以为所述基站的BBU或与所述BBU相连的网络设备：
若所述发送设备为所述基站的BBU，所述发送设备产生所述CPRI数据，并将所述CPRI数据封装在所述以太网帧中。
若所述发送设备为与所述基站的BBU相连的网络设备，所述BBU产生所述CPRI数据并将所述CPRI数据发送给所述发送设备，所述发送设备接收所述BBU发送的所述CPRI数据，并将所述CPRI数据封装在所述以太网帧中。
在场景一中，所述接收设备可以为所述基站的RRU或与所述RRU相连的网络设备。
若所述接收设备为所述RRU，所述接收设备接收所述以太网帧，解封装所述以太网帧，得到所述CPRI数据，并将所述CPRI数据转换为射频信号，将所述射频信号传送到天线发送。
若所述接收设备为与所述RRU相连的网络设备，所述接收设备接收所述以太网帧，解封装所述以太网帧，得到所述CPRI数据，并将所述CPRI数据发送给所述RRU；所述RRU接收所述CPRI数据并将所述CPRI数据转换为射频信号，并将所述射频信号传送到天线发送。
在所述基站需要接收移动设备发送的数据的场景二中，所述发送设备可以为所述基站的RRU或与所述RRU相连的网络设备。
若所述发送设备为所述基站的RRU，所述发送设备接收所述移动设备的数据信号，处理得到所述CPRI数据，并将所述CPRI数据封装在所述以太网帧中。
若所述发送设备为与所述RRU相连的网络设备，所述RRU接收所述移动设备的数据信号，处理得到所述CPRI数据，并将所述RRU发送给所述发送设备；所述发送设备将所述CPRI数据封装在所述以太网帧中。
在场景二中，所述接收设备可以为所述基站的BBU或与所述BBU相连的网络设备。
若所述接收设备为所述BBU，所述接收设备接收所述以太网帧，并解封装所述以太网帧得到所述CPRI数据。
若所述接收设备是与所述BBU相连的网络设备，所述接收设备接收所述以太网帧，解封装所述以太网帧得到所述CPRI数据，并将所述CPRI数据发送给所述BBU。
通过上述通信网络，所述发送设备可以将待发送的所述CPRI数据封装在所述以太网帧中，从而可以利用已经部署的以太网将所述以太网帧传输至所述接收设备。这样，所述发送设备和接收设备之间可以利用部署在所述以太网(例如移动承载网络)中的各网络设备，实现CPRI数据的传输。由于所述发送设备和所述接收设备之间采用现有的以太网，且现有的以太网分布广泛，传输数据时不限定发送设备和接收设备之间的距离，因此，通过上述方案，可以实现分布式部署的RRU和集中式部署的BBU 之间的连接。
为了更加清晰的描述本申请实施例的技术方案，下面结合图2，对本申请实施例提供的一种数据传输方法的流程进行描述。其中，所述方法应用于基站的RRU和BBU距离较大时的场景中，例如多个基站采用集中式部署方式部署BBU和采用分布式部署方式部署各自的RRU的场景中。参阅图2所示，该方法包括：
S201：发送设备将待发送的CPRI数据封装在以太网帧中。
在本申请实施例中，涉及的发送设备和所述接收设备可以图1a所示的通信网络中的相应的发送设备和接收设备，所述发送设备可以为BBU或与BBU相连的网络设备，此时，所述接收设备为RRU或与RRU相连的网络设备；或者所述发送设备为RRU或与RRU相连的网络设备，此时，所述接收设备为BBU或与BBU相连的网络设备。
可选的，所述发送设备通过以下步骤，将所述CPRI数据封装为所述以太网帧，包括：
所述发送设备确定所述CPRI数据的特征信息；
所述发送设备将所述特征信息和所述CPRI数据封装在所述以太网帧中。
可选的，所述特征信息包括以下至少一项或多项：数据长度、数据类型、同步信息、时间戳、序列号。其中，所述数据长度，用于表示所述CPRI数据的长度。所述数据类型，用于表示所述CPRI数据的类型。所述时间戳，用于表示所述发送设备接收所述CPRI数据的时刻。所述同步信息，用于表示所述CPRI数据与之前的CPRI数据或与后续的CPRI数据之间的定时关系。所述序列号，用于表示所述发送设备对所述CPRI数据时进行封装处理的顺序编号。
例如，当所述发送设备需要持续发送大批量的CPRI数据时，所述发送设备会将所述大量CPRI数据封装在一个或多个以太网帧中。为了保证所述接收设备可以准确地对所述以太网帧进行解封装得到所述大批量的CPRI数据，所述以太网帧中包括所述序列号，这样，所述接收设备在收到多个以太网帧后，可以根据所述序列号的先后顺序进行解封装，从而得到原CPRI数据。
通过上述方法，所述发送设备不需要改变所述CPRI数据的内容和数据格式，将所述CPRI数据封装在所述以太网帧中，经以太网传输所述携带在以太网帧中的CPRI数据，可提高所述CPRI数据发送效率，所述接收设备解封装获得所述CPRI数据的效率也得以提高，CPRI业务可以全透明化承载。
可选的，所述CPRI数据包括一个时间窗内的CPRI数据。即当所述发送设备在持续一段时间内一直存在待发送的CPRI数据时，所述发送设备按照固定时间窗对待发送的CPRI数据进行切片，然后对CPRI数据切片进行封装，从而可以实现CPRI业务的分组化承载。
所述时间窗的取值关系到封装到以太网帧中的CPRI数据的大小。当所述时间窗的取值过大时，会导致封装后的以太网帧太长，不利于在以太网中传输；当所述时间窗的取值过小时，传输设定大小的CPRI数据需要封装在多个以太网帧中传输，导致资源开销过大，传输效率降低。因此，可选的，所述时间窗的取值可以根据当前的以太网的业务特点具体设定，即保证每个以太网帧中封装的净荷内容在正常范围内，例如，所述时间窗的取值可以为1.25微秒(μs)，当所述CPRI业务为CPRI option1(所 述CPRI业务的数据传输速率为614.4兆比特每秒(Mbit/s))，每个时间窗内的数据大小为768bit(1.25μs/(1/614.4Mbit/s)＝768bit))，因此，封装后的以太网帧中净荷内容为768bit，在正常范围内。
可选的，当所述发送设备对待发送的CPRI数据进行切片处理后封装为多个以太网帧时，每个以太网帧中的特征信息包含该CPRI数据的同步信息、时间戳和序列号中的一项或多项。这样，在接收设备接收到所述多个以太网帧后，可以根据每个以太网帧中的特征信息，按照该特征信息体现的先后顺序进行对所述多个以太网帧进行解封装，从而得到准确的原待发送的CPRI数据。
S202：所述发送设备将所述以太网帧发送给接收设备。
如图2所示，所述发送设备可以通过已经部署的所述以太网将所述以太网帧发送给所述接收设备，即所述发送设备利用所述以太网中的各网络设备，传输所述以太网帧，当所述以太网为PTN时，所述网络设备为PTN设备。
S203：所述接收设备接收所述发送设备发送的所述以太网帧后，将所述以太网帧进行解封装，得到所述CPRI数据。
可选的，所述发送设备在S201时，将所述CPRI数据的特征信息和所述CPRI数据一起封装到所述以太网帧中时，所述接收设备在执行S203时，包括：
所述接收设备获取所述以太网帧中包含的所述CPRI数据的特征信息；
所述接收设备根据所述特征信息对所述以太网帧进行解封装，得到所述CPRI数据。
通过以上对所述特征信息的论述可知，所述接收设备根据所述特征信息对所述以太网帧进行解封装，可以准确地可到原CPRI数据。
采用本申请实施例提供的数据传输方法，发送设备可以将待发送的CPRI数据封装在以太网帧中，从而可以利用已经部署的以太网将所述以太网帧传输至接收设备。这样，所述发送设备和接收设备之间可以利用部署在所述以太网(例如移动承载网络)中的各网络设备，实现CPRI数据的传输。由于所述发送设备和所述接收设备之间采用现有的以太网，且现有的以太网分布广泛，传输数据时不限定发送设备和接收设备之间的距离，因此，通过上述方案，可以实现分布式部署的RRU和集中式部署的BBU之间的连接。
基于以上实施例，本申请实施例提供了一种发送设备，所述发送设备可以应用于如图1a所示的通信网络中，用于实现如图2所示的数据传输方法，参阅图3所示，所述发送设备300包括：处理单元301和发送单元302，其中，
处理单元301，用于将待发送的CPRI数据封装在以太网帧中；
发送单元302，用于发送所述以太网帧。
可选的，所述处理单元301，具体用于：确定所述CPRI数据的特征信息；将所述特征信息和所述CPRI数据封装在所述以太网帧中。
可选的，所述特征信息包括以下至少一项或多项：数据长度、数据类型、同步信息、时间戳、序列号；其中，所述时间戳用于表示所述发送设备接收所述CPRI数据的时刻。
可选的，所述CPRI数据包括一个时间窗内的CPRI数据。
可选的，所述发送设备300为BBU或与BBU相连的网络设备；或者所述发送设备300为RRU或与RRU相连的网络设备。
可选的，所述发送单元302，具体用于：通过以太网发送所述以太网帧。
本申请实施例提供的发送设备可以将待发送的CPRI数据封装在以太网帧中，从而可以利用已经部署的以太网将所述以太网帧传输至接收设备。这样，所述发送设备和接收设备之间可以利用部署在所述以太网(例如移动承载网络)中的各网络设备，实现CPRI数据的传输。由于所述发送设备和所述接收设备之间采用现有的以太网，且现有的以太网分布广泛，传输数据时不限定发送设备和接收设备之间的距离，因此，通过所述发送设备，可以实现分布式部署的RRU和集中式部署的BBU之间的连接。
基于以上实施例，本申请实施例提供了一种接收设备，所述接收设备可以应用于如图1a所示的通信网络中，用于实现如图2所示的数据传输方法，参阅图4所示，所述接收设备400包括：接收单元401和处理单元402，其中，
接收单元401，用于接收以太网帧，所述以太网帧包括CPRI数据；
处理单元402，用于将所述以太网帧进行解封装，得到所述CPRI数据。
可选的，所述处理单元402，具体用于：获取所述以太网帧中包含的所述CPRI数据的特征信息；根据所述特征信息对所述以太网帧进行解封装，得到所述CPRI数据。
可选的，所述特征信息包括以下至少一项或多项：数据长度、数据类型、同步信息、时间戳、序列号；其中，所述时间戳用于表示发送所述以太网帧的所述发送设备接收所述CPRI数据的时刻。
可选的，所述CPRI数据包括一个时间窗内的CPRI数据。
可选的，所述接收设备400为RRU或与RRU相连的网络设备；或者所述接收设备400为BBU或与BBU相连的网络设备。
可选的，所述接收单元401，具体用于：通过以太网接收所述以太网帧。
本申请实施例提供的接收设备在接收到发送设备发送的携带CPRI数据的以太网帧后，可以解封装所述以太网帧得到所述CPRI数据。所述发送设备可以利用已经部署的以太网将所述以太网帧传输至接收设备。这样，所述发送设备和接收设备之间可以利用部署在所述以太网(例如移动承载网络)中的各网络设备，实现CPRI数据的传输。由于所述发送设备和所述接收设备之间采用现有的以太网，且现有的以太网分布广泛，传输数据时不限定发送设备和接收设备之间的距离，因此，通过上述接收设备，可以实现分布式部署的RRU和集中式部署的BBU之间的连接。
由于BBU和RRU之间的数据传输需要将数据携带在光信号中实现，即BBU和RRU发出的数据、传输至BBU和RRU的数据均是以光信号的形式存在的，显然，传统的BBU和RRU中均存在光电转换模块，以实现光信号和电信号之间的转换。
基于以上实施例，本申请实施例还提供了另一种发送设备，所述发送设备可以是在基站需要发射射频信号的场景中的BBU，或者是在基站需要接收移动设备发送的数据的场景中的RRU，用于实现如图2所示的数据传输方法。参阅图5所示，所述发送设备500包括：业务处理模块501、数据封装模块502、光电转换模块503，其中，所述业务处理模块501，用于实现所述发送设备的业务，生成待发送的CPRI数据。所述 数据封装模块502，用于将所述CPRI数据封装在以太网帧中，具体的封装过程可以参照图2所示的数据传输方法实施例中的描述，此处不再赘述。所述光电转换模块503，用于实现光信号和电信号之间的转换，即将携带所述以太网帧的电信号转换为携带所述以太网帧的光信号，以使所述光信号可以通过光纤传输至下一个网络设备。
基于以上实施例，本申请实施例还提供了另一种接收设备，所述接收设备可以是在基站需要发射射频信号的场景中的RRU，或者是在基站需要接收移动设备发送的数据的场景中的BBU，用于实现如图2所示的数据传输方法。参阅图6所示，所述接收设备600包括：光电转换模块601、数据解封装模块602、业务处理模块603，其中，所述光电转换模块601，用于在接收到通过光纤传输的携带以太网帧的光信号后，将所述光信号转换为携带所述以太网帧的电信号；所述数据解封装模块602，用于将所述以太网帧进行解封装，得到CPRI数据，具体的解封装过程可以参照图2所示的数据传输方法实施例中的描述，此处不再赘述.所述业务处理模块603，用于根据所述CPRI数据，实现所述接收设备的业务。
基于以上实施例，本申请实施例还提供了又一种发送设备，所述发送设备可以是在基站需要发射射频信号的场景中的与BBU相连的网络设备，或者是在基站需要接收移动设备发送的数据的场景中的与RRU相连的网络设备，用于实现如图2所示的数据传输方法。参阅图7所示，所述发送设备700包括：光电转换模块701、数据封装模块702、以太网业务处理模块703，其中，所述光电转换模块701，用于将BBU或RRU通过光纤发送的携带CPRI数据的光信号进行转换，得到携带所述CPRI数据的电信号。所述数据封装模块702，用于将所述CPRI数据封装在以太网帧中，具体的封装过程可以参照图2所示的数据传输方法实施例中的描述，此处不再赘述。所述以太网业务处理模块703，用于根据所述以太网帧，实现所述发送设备的以太网业务。
基于以上实施例，本申请实施例还提供了又一种接收设备，所述接收设备可以是在基站需要发射射频信号的场景中的与RRU相连的网络设备，或者是在基站需要接收移动设备发送的数据的场景中的与BBU相连的网络设备，用于实现如图2所示的数据传输方法。参阅图8所示，所述接收设备800包括：以太网业务处理模块801、数据解封装模块802、光电转换模块803，其中，所述以太网业务处理模块801，用于接收携带CPRI数据的以太网帧，实现所述接收设备的以太网业务。所述数据解封装模块802，用于将所述以太网帧进行解封装，得到所述CPRI数据，具体的解封装过程可以参照图2所示的数据传输方法实施例中的描述，此处不再赘述。所述光电转换模块803，用于将携带所述CPRI数据的电信号进行转换，得到携带所述CPRI数据的光信号，并通过光纤将所述光信号传输给BBU或RRU。
以上实施例中的数据封装模块和数据解封装模块可以通过软件实现，也可以通过专用集成电路(Application Specific Integrated Circuits，ASIC)芯片或现场可编程门阵列(Field－Programmable Gate Array，FPGA)实现，本申请实施例对此不作限定。
另外，需要说明的是，本申请实施例中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。在本申请的实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用 软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
基于以上实施例，本申请实施例还提供了一种通信网络，如图9所示，在所述通信网络中，BBU和RRU在向对端发送CPRI数据时，均采用如图5所示的发送设备的结构；且所述BBU和所述RRU在接收对端发送的CPRI数据时，均采用如图6所示的接收设备的结构。所述BBU和所述RRU之间传输CPRI数据的过程可以参见图9中的箭头指向以及以上方法实施例中的描述，此处不再赘述。
需要说明的是，在所述通信网络中，除所述BBU和所述RRU以外的网络设备以及以太网均为已经部署好的，可以不需要任何改变。
在所述通信网络中，BBU或RRU作为发送设备时可以将待发送的CPRI数据封装在以太网帧中，从而可以利用已经部署的以太网将所述以太网帧传输至对端的接收设备。这样，所述发送设备和接收设备之间可以利用部署在所述以太网(例如移动承载网络)中的各网络设备，实现CPRI数据的传输。由于所述发送设备和所述接收设备之间采用现有的以太网，且现有的以太网分布广泛，传输数据时不限定发送设备和接收设备之间的距离，因此，通过上述方案，可以实现分布式部署的RRU和集中式部署的BBU之间的连接。
基于以上实施例，本申请实施例还提供了一种通信网络，如图10所示，在所述通信网络中，与BBU和RRU相连的网络设备在向对端发送CPRI数据时，均采用如图7所示的发送设备的结构；且所述BBU和所述RRU在接收对端发送的CPRI数据时，均采用如图8所示的接收设备的结构。所述BBU和所述RRU之间传输CPRI数据的过程可以参见图10中的箭头指向以及以上方法实施例中的描述，此处不再赘述。
需要说明的是，在所述通信网络中，除与所述BBU和所述RRU相连的网络设备以外的设备(即BBU和RRU)以及以太网均为已经部署好的，可以不需要任何改变。
在所述通信网络中，与BBU或RRU相连的网络设备作为发送设备时，可以将待发送的CPRI数据封装在以太网帧中，从而可以利用已经部署的以太网将所述以太网帧传输至对端的接收设备。这样，所述发送设备和接收设备之间可以利用部署在所述以太网(例如移动承载网络)中的各网络设备，实现CPRI数据的传输。由于所述发送设备和所述接收设备之间采用现有的以太网，且现有的以太网分布广泛，传输数据时不限定发送设备和接收设备之间的距离，因此，通过上述方案，可以实现分布式部署的RRU和集中式部署的BBU之间的连接。
基于以上实施例，本申请实施例还提供了一种通信网络，如图11所示，在所述通信网络中，BBU在向对侧发送CPRI数据时，采用如图5所示的发送设备的结构，在 接收对侧发送的CPRI数据时，采用如图6所示的接收设备的结构；与RRU相连的网络设备在帮助所述RRU向对侧发送CPRI数据时，采用如图如图7所示的发送设备的结构，在帮助所述RRU接收对侧发送的CPRI数据时，采用如图8所示的接收设备的结构。所述BBU和所述RRU之间通过网络设备传输CPRI数据的过程，可以参见图11中的箭头指向以及以上方法实施例中的描述，此处不再赘述。
需要说明的是，在所述通信网络中，除所述BBU和与所述RRU相连的网络设备以外的设备(如RRU和与BBU相连的网络设备)以及以太网均为已经部署好的，可以不需要任何改变。
在所述通信网络中，BBU或与RRU相连的网络设备作为发送设备时可以将待发送的CPRI数据封装在以太网帧中，从而可以利用已经部署的以太网将所述以太网帧传输至对端的接收设备。这样，所述发送设备和接收设备之间可以利用部署在所述以太网(例如移动承载网络)中的各网络设备，实现CPRI数据的传输。由于所述发送设备和所述接收设备之间采用现有的以太网，且现有的以太网分布广泛，传输数据时不限定发送设备和接收设备之间的距离，因此，通过上述方案，可以实现分布式部署的RRU和集中式部署的BBU之间的连接。
基于以上实施例，本申请实施例还提供了一种通信网络，如图12所示，在所述通信网络中，RRU在向对侧发送CPRI数据时，采用如图5所示的发送设备的结构，在接收对侧发送的CPRI数据时，采用如图6所示的接收设备的结构；与BBU相连的网络设备在帮助所述BBU向对侧发送CPRI数据时，采用如图如图7所示的发送设备的结构，在帮助所述BBU接收对侧发送的CPRI数据时，采用如图8所示的接收设备的结构。所述BBU和所述RRU之间通过网络设备传输CPRI数据的过程，可以参见图12中的箭头指向以及以上方法实施例中的描述，此处不再赘述。
需要说明的是，在所述通信网络中，除所述RRU和与所述BBU相连的网络设备以外的设备(如BBU和与RRU相连的网络设备)以及以太网均为已经部署好的，可以不需要任何改变。
在所述通信网络中，RRU或与BBU相连的网络设备作为发送设备时可以将待发送的CPRI数据封装在以太网帧中，从而可以利用已经部署的以太网将所述以太网帧传输至对端的接收设备。这样，所述发送设备和接收设备之间可以利用部署在所述以太网(例如移动承载网络)中的各网络设备，实现CPRI数据的传输。由于所述发送设备和所述接收设备之间采用现有的以太网，且现有的以太网分布广泛，传输数据时不限定发送设备和接收设备之间的距离，因此，通过上述方案，可以实现分布式部署的RRU和集中式部署的BBU之间的连接。
基于以上实施例，本发明实施例还提供了一种发送设备，用于实现如图2所示的数据传输方法，且具有如图3所示的发送设备的功能，参阅图13所示，所述发送设备1300中包括：通信接口1301、处理器1302、总线1303、存储器1304，以及光电转换模块1305。
所述通信接口1301、所述处理器1302、所述存储器1304和所述光电转换模块1305通过所述总线1303相互连接。
总线1303可以是外设部件互连标准(peripheral component interconnect，简称PCI) 总线或扩展工业标准结构(extended industry standard architecture，简称EISA)总线等。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图13中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
所述通信接口1301，用于与其他设备进行通信交互。
所述处理器1302，用于实现如图2所示的数据传输方法，包括：将待发送的CPRI数据封装为以太网帧；将所述以太网帧发送给接收设备。
可选的，所述处理器1302在将待发送的CPRI数据封装为以太网帧时，具体用于：确定所述CPRI数据的特征信息；将所述特征信息和所述CPRI数据封装为所述以太网帧。
可选的，所述特征信息包括以下至少一项或多项：数据长度、数据类型、同步信息、时间戳、序列号；其中，所述时间戳用于表示所述发送设备接收所述CPRI数据的时刻。
可选的，所述CPRI数据包括一个时间窗内的CPRI数据。
可选的，所述处理器1302在将所述以太网帧发送给接收设备时，具体用于：通过以太网将所述以太网帧发送给所述接收设备。
其中，当所述发送设备1300为BBU或与BBU相连的网络设备时，所述接收设备为RRU或与RRU相连的网络设备；或者
当所述发送设备1300为RRU或与RRU相连的网络设备时，所述接收设备为BBU或与BBU相连的网络设备。
所述光电转换模块1304，用于进行光信号和电信号之间的转换。
例如，当所述发送设备1300为BBU或RRU时，所述光电转换模块1304用于将携带封装好的所述以太网帧的电信号进行转换，得到携带所述以太网帧的光信号，从而可以使所述发送设备1300将所述光信号通过光纤传输给相连的网络设备。
又例如，当所述发送设备1300为与BBU或RRU相连的网络设备时，所述光电转换模块1304用于将在所述发送设备1300接收到BBU或RRU发送的携带CPRI数据的光信号后，将所述光信号转换为携带所述CPRI数据的电信号，以使所述发送设备1300中的数据封装模块以及以太网业务处理模块可以识别到所述CPRI数据。
所述存储器1304，用于存放程序等。具体地，程序可以包括程序代码，该程序代码包括计算机操作指令。所述存储器1304可能包含随机存取存储器(random access memory，简称RAM)，也可能还包括非易失性存储器(non-volatile memory)，例如至少一个磁盘存储器。所述处理器1302执行存储器1304所存放的应用程序，实现上述功能，从而实现如图2所示的数据传输方法。
本申请实施例提供的发送设备可以将待发送的CPRI数据封装在以太网帧中，从而可以利用已经部署的以太网将所述以太网帧传输至接收设备。这样，所述发送设备和接收设备之间可以利用部署在所述以太网(例如移动承载网络)中的各网络设备，实现CPRI数据的传输。由于所述发送设备和所述接收设备之间采用现有的以太网，且现有的以太网分布广泛，传输数据时不限定发送设备和接收设备之间的距离，因此，通过所述发送设备，可以实现分布式部署的RRU和集中式部署的BBU之间的连接。
基于以上实施例，本发明实施例还提供了一种接收设备，用于实现如图2所示的 数据传输方法，且具有如图4所示的接收设备的功能，参阅图14所示，所述接收设备1400中包括：通信接口1401、处理器1402、总线1403、存储器1404，以及光电转换模块1405。
所述通信接口1401、所述处理器1402、所述存储器1404和所述光电转换模块1405通过所述总线1403相互连接。
总线1403可以是外设部件互连标准(peripheral component interconnect，简称PCI)总线或扩展工业标准结构(extended industry standard architecture，简称EISA)总线等。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图14中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
所述通信接口1401，用于与其他设备进行通信交互。所述处理器1402，用于实现如图2所示的数据传输方法，包括：接收发送设备发送的以太网帧；将所述以太网帧进行解封装，得到CPRI数据。
所述处理器1402，在将所述以太网帧进行解封装得到所述CPRI数据时，具体用于：获取所述以太网帧中包含的所述CPRI数据的特征信息；
根据所述特征信息对所述以太网帧进行解封装，得到所述CPRI数据。
可选的，所述特征信息包括以下至少一项或多项：数据长度、数据类型、同步信息、时间戳、序列号；其中，所述时间戳用于表示所述发送设备接收所述CPRI数据的时刻。
可选的，所述CPRI数据包括一个时间窗内的CPRI数据。
可选的，所述处理器1402在接收发送设备发送的以太网帧时，具体用于：通过以太网接收所述发送设备发送的所述以太网帧。
其中，当所述发送设备为BBU或与BBU相连的网络设备；所述接收设备1400为RRU或与RRU相连的网络设备；或者当所述发送设备为RRU或与RRU相连的网络设备时；所述接收设备为BBU或与BBU相连的网络设备。
所述光电转换模块1404，用于进行光信号和电信号之间的转换。例如，当所述接收设备1400为BBU或RRU时，所述光电转换模块1304用于将携带封装好的所述以太网帧的电信号进行转换，得到携带所述以太网帧的光信号，从而可以使所述接收设备1400中的数据解封装模块可以识别所述以太网帧。
又例如，当所述接收设备1400为与BBU或RRU相连的网络设备时，所述光电转换模块1404用于将在所述接收设备1400解封装得到所述CPRI数据后，可以将携带所述CPRI数据的电信号转换为携带所述CPRI数据的光信号，从而可以将所述光信号通过光纤传输给所述BBU或所述RRU。
所述存储器1404，用于存放程序等。具体地，程序可以包括程序代码，该程序代码包括计算机操作指令。所述存储器1404可能包含随机存取存储器(random access memory，简称RAM)，也可能还包括非易失性存储器(non-volatile memory)，例如至少一个磁盘存储器。所述处理器1402执行存储器1404所存放的应用程序，实现上述功能，从而实现如图2所示的数据传输方法。
本申请实施例提供的接收设备在接收到携带了CPRI数据的以太网帧后，可以解封装所述以太网帧得到所述CPRI数据。所述发送设备可以利用已经部署的以太网将 所述以太网帧传输至接收设备。这样，所述发送设备和接收设备之间可以利用部署在所述以太网(例如移动承载网络)中的各网络设备，实现CPRI数据的传输。由于所述发送设备和所述接收设备之间采用现有的以太网，且现有的以太网分布广泛，传输数据时不限定发送设备和接收设备之间的距离，因此，通过上述接收设备，可以实现分布式部署的RRU和集中式部署的BBU之间的连接。
通过本申请实施例提供一种数据传输方法及装置，发送设备可以将待发送的CPRI数据封装在以太网帧中，从而可以利用已经部署的以太网将所述以太网帧传输至接收设备。这样，所述发送设备和接收设备之间可以利用部署在所述以太网(例如移动承载网络)中的各网络设备，实现CPRI数据的传输。由于所述发送设备和所述接收设备之间采用现有的以太网，且现有的以太网分布广泛，传输数据时不限定发送设备和接收设备之间的距离，因此，通过上述方案，可以实现分布式部署的RRU和集中式部署的BBU之间的连接。
本领域内的技术人员应明白，本发明的实施例可提供为方法、系统、或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (23)

  1. 一种数据传输方法，其特征在于，包括：
    发送设备将待发送的通用公共射频接口CPRI数据封装在以太网帧中；
    所述发送设备发送所述以太网帧。
  2. 如权利要求1所述的方法，其特征在于，所述发送设备将所述CPRI数据封装在所述以太网帧中，包括：
    所述发送设备确定所述CPRI数据的特征信息；
    所述发送设备将所述特征信息和所述CPRI数据封装在所述以太网帧中。
  3. 如权利要求2所述的方法，其特征在于，所述特征信息包括以下至少一项或多项：数据长度、数据类型、同步信息、时间戳、序列号；其中，所述时间戳用于表示所述发送设备接收所述CPRI数据的时刻。
  4. 如权利要求1-3任一项所述的方法，其特征在于，所述CPRI数据包括一个时间窗内的CPRI数据。
  5. 如权利要求1-4任一项所述的方法，其特征在于，
    所述发送设备为基带处理单元BBU或与BBU相连的网络设备；或者
    所述发送设备为RRU或与RRU相连的网络设备。
  6. 如权利要求1-5任一项所述的方法，其特征在于，所述发送设备发送所述以太网帧，包括：所述发送设备通过以太网发送所述以太网帧。
  7. 一种数据传输方法，其特征在于，包括：
    接收设备接收以太网帧，所述以太网帧包括通用公共射频接口CPRI数据；
    所述接收设备将所述以太网帧进行解封装，得到所述CPRI数据。
  8. 如权利要求7所述的方法，其特征在于，所述接收设备将所述以太网帧进行解封装，得到所述CPRI数据，包括：
    所述接收设备获取所述以太网帧中包含的所述CPRI数据的特征信息；
    所述接收设备根据所述特征信息对所述以太网帧进行解封装，得到所述CPRI数据。
  9. 如权利要求8所述的方法，其特征在于，所述特征信息包括以下至少一项或多项：数据长度、数据类型、同步信息、时间戳、序列号；其中，所述时间戳用于表示发送所述以太网帧的发送设备接收所述CPRI数据的时刻。
  10. 如权利要求7-9任一项所述的方法，其特征在于，所述CPRI数据包括一个时间窗内的CPRI数据。
  11. 如权利要求7-10任一项所述的方法，其特征在于，
    所述接收设备为射频拉远单元RRU或与RRU相连的网络设备；或者
    所述接收设备为BBU或与BBU相连的网络设备。
  12. 如权利要求7-11任一项所述的方法，其特征在于，所述接收设备接收所述以太网帧，包括：
    所述接收设备通过以太网接收所述以太网帧。
  13. 一种发送设备，其特征在于，包括：
    处理单元，用于将待发送的通用公共射频接口CPRI数据封装在以太网帧中；
    发送单元，用于发送所述以太网帧。
  14. 如权利要求13所述的发送设备，其特征在于，所述处理单元，具体用于：
    确定所述CPRI数据的特征信息；
    将所述特征信息和所述CPRI数据封装在所述以太网帧中。
  15. 如权利要求14所述的发送设备，其特征在于，所述特征信息包括以下至少一项或多项：数据长度、数据类型、同步信息、时间戳、序列号；其中，所述时间戳用于表示所述发送设备接收所述CPRI数据的时刻。
  16. 如权利要求13-15任一项所述的发送设备，其特征在于，所述CPRI数据包括一个时间窗内的CPRI数据。
  17. 如权利要求13-16任一项所述的发送设备，其特征在于，
    所述发送设备为基带处理单元BBU或与BBU相连的网络设备；或者
    所述发送设备为RRU或与RRU相连的网络设备。
  18. 如权利要求13-17任一项所述的发送设备，其特征在于，所述发送单元，具体用于：通过以太网发送所述以太网帧。
  19. 一种接收设备，其特征在于，包括：
    接收单元，用于接收以太网帧，所述以太网帧包括通用公共射频接口CPRI数据；
    处理单元，用于将所述以太网帧进行解封装，得到所述CPRI数据。
  20. 如权利要求19所述的接收设备，其特征在于，所述处理单元，具体用于：
    获取所述以太网帧中包含的所述CPRI数据的特征信息；
    根据所述特征信息对所述以太网帧进行解封装，得到所述CPRI数据。
  21. 如权利要求20所述的接收设备，其特征在于，所述特征信息包括以下至少一项或多项：数据长度、数据类型、同步信息、时间戳、序列号；其中，所述时间戳用于表示发送所述以太网帧的发送设备接收所述CPRI数据的时刻。
  22. 如权利要求19-21任一项所述的接收设备，其特征在于，所述CPRI数据包括一个时间窗内的CPRI数据。
  23. 如权利要求19-22任一项所述的接收设备，其特征在于，
    所述接收设备为射频拉远单元RRU或与RRU相连的网络设备；或者
    所述接收设备为BBU或与BBU相连的网络设备。
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