CN111372287B - Signal processing method, access network equipment and multi-system access network equipment - Google Patents
Signal processing method, access network equipment and multi-system access network equipment Download PDFInfo
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- CN111372287B CN111372287B CN202010156932.0A CN202010156932A CN111372287B CN 111372287 B CN111372287 B CN 111372287B CN 202010156932 A CN202010156932 A CN 202010156932A CN 111372287 B CN111372287 B CN 111372287B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
- H04W28/065—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information using assembly or disassembly of packets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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- H04L69/18—Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
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Abstract
The application relates to a signal processing method, an access network device and a multi-system access network device. The method comprises the following steps: a first host unit receives first downlink baseband data sent by core network equipment; the first host unit receives second downlink baseband data from a second host unit, and determines a data combining position in the second downlink baseband data according to a data protocol format adopted by the second downlink baseband data; the first downlink baseband data and the second downlink baseband data adopt different data protocol formats; after the first host unit inserts the first downlink baseband data into the data combining position, the first host unit sends the obtained first recombined data to a remote unit; and the remote unit is used for splitting the first recombined data and then sending the split data to the corresponding terminal equipment. The method can save the hardware cost of the access network equipment.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a signal processing method, an access network device, and a multi-system access network device.
Background
With the continuous development of communication technologies, communication technologies with higher speed, lower delay and larger capacity are more and more popular, and then a protocol format different from the previous data protocol format for carrying data with higher speed, lower delay and larger capacity also appears, and from the historical experience and the smooth requirement of the evolution of the data communication protocol format, different data protocol formats can coexist for a long time, so that the communication network is required to have the capacity of multiple frequencies and multiple modes.
In related technologies, when signals in different data protocol formats are simultaneously transmitted, the existing access network device is mostly modified, or a new access network device is newly deployed, so as to meet the requirement of simultaneously transmitting signals in different data protocol formats.
However, the above technology has the problem of high hardware cost of the access network equipment.
Disclosure of Invention
In view of the foregoing, it is necessary to provide a signal processing method, an access network device, and a multi-system access network device.
In a first aspect, a signal processing method is provided, which includes:
a first host unit receives first downlink baseband data sent by core network equipment;
the first host unit receives second downlink baseband data from the second host unit, and determines a data combining position in the second downlink baseband data according to a data protocol format adopted by the second downlink baseband data; the first downlink baseband data and the second downlink baseband data adopt different data protocol formats;
after the first host unit inserts the first downlink baseband data into the data combining position, the first host unit sends the obtained first recombined data to the remote unit; the remote unit is used for splitting the first recombined data and then sending the split data to the corresponding terminal equipment.
In one embodiment, the determining the data combining position in the second downlink baseband data according to the data protocol format adopted by the second downlink baseband data includes:
and determining the position of the Ethernet data field in the second downlink baseband data as a data combining position according to the CPRI protocol adopted by the second downlink baseband data.
In one embodiment, the inserting the first downlink baseband data into the data combining position includes:
the first downstream baseband data is inserted after the control management data in the ethernet data field.
In one embodiment, the method further includes:
the first host unit receives second recombination data sent by the remote unit; the second reconfiguration data is obtained by combining uplink data adopting an eCPRI protocol and uplink data adopting a CPRI protocol by the remote unit;
the first host unit splits the second reuse data according to the position of the Ethernet data field in the second reuse data and the data length of the uplink data adopting the eCPRI protocol, and obtains first uplink baseband data sent to the core network device and second uplink baseband data sent to the second host unit.
In one embodiment, the determining, by the first host unit, the first uplink baseband data sent to the core network device and the second uplink baseband data sent to the second host unit according to the first uplink baseband data and the second uplink baseband data, includes:
the first host unit obtains the initial position of the uplink data adopting the eCPRI protocol according to the initial position of the Ethernet data field in the second reconfiguration data and the length of the control management data in the Ethernet data field;
and splitting the second repeated data according to the initial position of the uplink data adopting the eCPRI protocol and the data length of the uplink data adopting the eCPRI protocol to obtain first uplink baseband data sent to the core network equipment and second uplink baseband data sent to the second host unit.
In a second aspect, a signal processing method is provided, the method comprising:
the remote unit receives first recombined data sent by the first host unit, wherein the first recombined data is obtained by combining the first downlink baseband data and the second downlink baseband data based on the determined data combining position of the first host unit; the data combining position is determined by the first host unit according to a data protocol format adopted by the second downlink baseband data, the first downlink baseband data is sent by the core network equipment, and the second downlink baseband data is sent by the second host unit; the first downlink baseband data and the second downlink baseband data adopt different data protocol formats;
and the remote unit splits the first recombined data and then sends the first recombined data to the corresponding terminal equipment.
In one embodiment, the first downlink baseband data is downlink data using an eccri protocol, the second downlink baseband data is downlink data using a CPRI protocol, and the splitting, by the remote unit, the first reassembled data includes:
the remote unit splits the first recombined data according to the position of the Ethernet data field in the first recombined data and the data length of the downlink data adopting the eCPRI protocol.
In one embodiment, the splitting the first reassembly data according to the position of the ethernet data field in the first reassembly data and the data length of the downlink data using the eccri protocol includes:
and splitting the first recombined data according to the position of the Ethernet data field in the first recombined data, the control management data in the Ethernet data field and the data length of the downlink data adopting the eCPRI protocol.
In one embodiment, the method further includes:
the remote unit receives uplink data adopting an eCPRI protocol and uplink data adopting a CPRI protocol, and determines a data combining position in the uplink data adopting the CPRI protocol according to the CPRI protocol;
the remote unit inserts the uplink data adopting the eCPRI protocol into a data combining position in the uplink data adopting the CPRI protocol, and then sends the obtained second recombination data to the first host unit; the first host unit is used for splitting the second repeated data and sending the second repeated data to the core network equipment and the second host unit.
In one embodiment, the determining, according to the CPRI protocol, a data combining position in uplink data using the CPRI protocol includes:
and according to the CPRI protocol, determining the position of an Ethernet data field in the uplink data adopting the CPRI protocol as a data combining position.
In one embodiment, the inserting the uplink data using the eccri protocol into the data combining position in the uplink data using the CPRI protocol includes:
and inserting the uplink data adopting the eCPRI protocol into the control management data in the Ethernet data field.
In a third aspect, an access network device is provided, comprising a first host unit, a remote unit,
a first host unit for executing the signal processing method on the first host unit side;
and the remote unit is used for executing the signal processing method on the remote unit side.
In a fourth aspect, there is provided a first host unit comprising a higher layer protocol processing module and a first signal processing module,
the high-level protocol processing module is used for receiving first downlink baseband data sent by the core network equipment and performing high-level protocol processing on the first downlink baseband data to obtain downlink baseband data after the high-level protocol processing;
the first signal processing module is used for receiving the downlink baseband data processed by the high-level protocol to obtain first downlink baseband data; receiving second downlink baseband data from the second host unit, and determining a data combining position in the second downlink baseband data according to a data protocol format adopted by the second downlink baseband data; after the first downlink baseband data is inserted into the data combining position, the obtained first recombination data is sent to the remote unit; the first downlink baseband data and the second downlink baseband data adopt different data protocol formats; the remote unit is used for splitting the first recombined data and then sending the split data to the corresponding terminal equipment.
In a fifth aspect, a remote unit is provided, which comprises a second signal processing module and a lower layer protocol processing module,
the second signal processing module is used for receiving the first recombined data sent by the first host unit, splitting the first recombined data and sending the split first recombined data to the corresponding second terminal equipment and the lower-layer protocol processing module; the first recombined data is obtained by combining the first downlink baseband data and the second downlink baseband data based on the determined data combining position by the first host unit; the data combining position is determined by the first host unit according to a data protocol format adopted by the second downlink baseband data, the first downlink baseband data is sent by the core network equipment, and the second downlink baseband data is sent by the second host unit; the first downlink baseband data and the second downlink baseband data adopt different data protocol formats;
and the low-layer protocol processing module is used for performing low-layer protocol processing on the data obtained by splitting the first recombined data to obtain first downlink baseband data processed by the low-layer protocol, and sending the first downlink baseband data processed by the low-layer protocol to the corresponding first terminal equipment.
A sixth aspect provides a multi-system access network device, including at least one of the above access network device, the first host unit, and the remote unit, and the second host unit.
According to the signal processing method, the access network equipment and the multi-system access network equipment, the combination position of the first downlink baseband data and the second downlink baseband data is determined through the data protocol format of the second downlink baseband data, and the first downlink baseband data is directly inserted into the combination position, so that the simultaneous transmission of the two different protocol format data can be realized.
Drawings
FIG. 1 is a diagram illustrating a prior art functional partitioning option between a central unit and a remote unit;
FIG. 2 is a diagram illustrating a prior art functional partitioning option between eREC and eRE;
fig. 3 is a diagram illustrating an option of partitioning internal functions of a physical layer supported by an eccri in the prior art;
fig. 4 is a schematic structural diagram of a multi-system access network device in an embodiment;
FIG. 5a is a flow chart illustrating a method for signal processing at the first host unit side according to one embodiment;
fig. 5b is a schematic structural diagram of a CPRI protocol format in one embodiment;
FIG. 6 is a flowchart illustrating a signal processing method of the first host unit side according to another embodiment;
FIG. 7 is a flow diagram illustrating a method of signal processing at the remote unit side in one embodiment;
FIG. 8 is a flow chart illustrating a method of signal processing at the remote unit side in another embodiment;
FIG. 9 is a schematic diagram of a first host unit in one embodiment;
FIG. 10 is a schematic diagram of the structure of a remote unit in one embodiment;
fig. 11 is a schematic structural diagram of a multi-system access network device in an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
With the rapid development of mobile communication, the 5G era has come, and various operators and equipment manufacturers are actively promoting the construction of 5G experimental networks. In the LTE era, a Common Public Radio Interface (CPRI) and a common public radio interface (CP) are adopted between a 4G baseband processing unit and a radio remote unitThe RI interface provides specifications and links for the radio equipment control center (REC) and the Radio Equipment (RE) to exchange user platform data (IQ data), control and management information, and synchronization information. In the 5G era, due to the addition of large-scale antenna technology, the bandwidth is rapidly increased, and the transmission capacity requirement of the fronthaul architecture is increased, so the 3GPP protocol specification proposes a plurality of function segmentation modes, and forward transfer is converted into a packet mode (Ethernet), the forward transfer capacity reduction degree under different function division modes is different, as shown in fig. 1, there are various ways of partitioning between the Central Unit (CU) and the remote units (DU), such as between RRC (radio resource control protocol) and PDCP (packet convergence protocol), between PDCP and RLC (radio link control protocol), between RLC and MAC (physical network address), between MAC and PHY (physical layer), inside PHY, etc., their corresponding CU functions gradually increase, DU functions gradually decrease, therefore, the requirement of the forward transmission capacity on the interfaces of the CU and the DU is gradually increased, and the requirement of the time delay is gradually reduced. In order to support 5G forwarding, an eCPRI technology is provided, an eCPRI V1.0 specification uses a mode of internally dividing in a physical layer, an eCPRI interface supports flexible functional decomposition, a plurality of cutting modes exist, and the current standard supports a dividing mode I in the physical layerD、IID、IUAs shown in fig. 2 and 3, the eCPRI interface employs a packetized ethernet interface, and the bandwidth is decoupled from the number of antennas, so as to reduce the bandwidth of forward transmission. Therefore, if the 5G forward network adopts an eCPRI interface in a physical layer internal segmentation mode, and the existing 4G forward network architecture cannot achieve compatibility of two systems, namely 4G and 5G, in order to achieve simultaneous transmission of signals in different data protocol formats, transformation of a 4G/5G dual-mode indoor subsystem is required, that is, existing access network equipment needs to be transformed, or new access network equipment needs to be redeployed, so that simultaneous transmission of signals in different data protocol formats is satisfied. Therefore, the problem that the hardware cost of the access network equipment is high in the prior art is solved. Therefore, an embodiment of the present application provides a signal processing method, an access network device, and a multi-system access network device, and aims to solve the above technical problems.
The signal processing method provided in this embodiment may be applied to a multi-system access network device shown in fig. 4, where the multi-system access network device may include an access network device composed of a first host unit 10 and a remote unit 11, and may further include a second host unit 12, where the first host unit 10, the second host unit 12, and the remote unit 11 are connected and communicate with the second host unit 12 and the remote unit 11 through a network, and in addition, the first host unit 10 may be connected with a core network device and is used for receiving and transmitting data with the core network device. The first host unit 10 and the second host unit 12 may be baseband processing units BBU, central units CU, near-end machines, etc., the remote units 11 may be radio remote units RRU, remote units DU, remote machines, etc., the number of the remote units 11 connected to the first host unit 10 may be one or more, and the number of the second host units 12 connected to the first host unit 10 may also be one or more.
In addition, taking the first host unit 10 as an example, the first host unit 10 may include an interface subsystem, an oam (operation Administration and maintenance) subsystem, and a RAN (Radio Access Network) protocol stack subsystem. The interface subsystem realizes the analysis and encapsulation of data packets such as CPRI data packets, eCPRI data packets and the like, and performs data transmission with the remote unit 11 based on the data packets; the OAM subsystem realizes software management, configuration management, fault management and performance management functions; the RAN protocol stack subsystem may include: a PHY-H subsystem, a Media Access Control (MAC) Layer subsystem, an RLC Layer subsystem, a Packet Data Convergence Protocol (PDCP) subsystem, a Service Data Adaptation Protocol (SDAP) subsystem, a scheduler subsystem, and a Layer 3 (L3) subsystem. Illustratively, the first host unit 10 may be implemented by a server and an FPGA (Field-Programmable Gate Array), or the like. The second host unit 12 is similar in function and structure to the first host unit 10 and will not be described in detail here.
Taking the remote unit 11 as an example, the remote unit may generally include a digital intermediate frequency module, a transceiver module, a power amplifier and a filter module, wherein the digital intermediate frequency module is configured to perform modulation and demodulation, digital up-down conversion, a/D conversion, and the like on an optical signal received from the host unit to obtain an intermediate frequency signal, the transceiver module is configured to complete conversion from the intermediate frequency signal to a radio frequency signal, and the power amplifier and the filter module are configured to perform power amplification on the radio frequency signal and then transmit the radio frequency signal through an antenna port. It should be noted that the remote unit 11 herein may also include a radio frequency conversion module, and the radio frequency conversion module may perform system conversion on radio frequency signals of different systems sent by the power amplifier and filter module, and then distribute the radio frequency signals to terminal devices of corresponding systems.
It should be noted that, in the embodiments of the present application, the execution main body may be an access network device, or may be a first host unit and a remote unit in the access network device, and the method of the present application is described in the following embodiments of the present application from two sides by using the first host unit and the remote unit as the execution main bodies, respectively.
First, a signal processing method according to an embodiment of the present application will be described with a first host unit as an execution subject.
In an embodiment, the present embodiment relates to a specific process of how the first host unit determines a data combining position in a downlink process from the first host unit to the remote unit, and combines the first downlink baseband data and the second downlink baseband data according to the combining position and then sends the combined data to the remote unit. As shown in fig. 5a, the method may comprise the steps of:
s202, the first host unit receives the first downlink baseband data sent by the core network device.
In this step, the first host unit may be connected to the core network device, and receive downlink baseband data sent from a protocol IP network (core network device) interconnected between networks, and the first host unit may perform transmission of uplink/downlink baseband data with the core network device, where the baseband data sent by the core network device and received by the first host unit is recorded as the first downlink baseband data.
S204, the first host unit receives second downlink baseband data from the second host unit, and determines a data combining position in the second downlink baseband data according to a data protocol format adopted by the second downlink baseband data; the first downlink baseband data and the second downlink baseband data adopt different data protocol formats.
The second host unit may also be connected to another core network device, receive downlink baseband data from the other core network device sent via the protocol IP network, and record the downlink baseband data as second downlink baseband data. Here, the core network device connected to the first host unit and the core network device connected to the second host unit are different, and may be different in protocol format of downlink baseband data sent to the corresponding host unit, that is, different in protocol format of the first downlink baseband data and the second downlink baseband data, or different in format of downlink baseband data sent to the corresponding host unit, for example, it is assumed that a data protocol format used by the first downlink baseband data is an eCPRI protocol format, a data protocol format used by the second downlink baseband data may be a CPRI protocol format, and the like, and it is assumed that a format of the first downlink baseband data is 5G, and a format of the second downlink baseband data may be at least one of 4G, 3G, 2G, and the like.
Specifically, after receiving the second downlink baseband data sent by the second host unit, the first host unit may obtain a data protocol format adopted by the first downlink baseband data and a data protocol format adopted by the second downlink baseband data at the same time, and then the first host unit may find a position of a data packet in the protocol format of the second downlink baseband data, where the position is the same as the data protocol format of the first downlink baseband data, and use the position as a data combining position.
S206, after the first host unit inserts the first downlink baseband data into the data combining position, the first host unit sends the obtained first recombined data to the remote unit; the remote unit is used for splitting the first recombined data and then sending the split data to the corresponding terminal equipment.
The number of the remote units corresponding to the first host unit may be one or more, and if the number of the remote units is multiple, the first host unit may send the first reassembled data to the multiple remote units at the same time, that is, the data received by each remote unit is the same; the terminal device corresponding to each remote unit may also be one or more, and if the terminal device is a plurality of terminal devices, the format or format of the data protocol that each terminal device can receive may be the same or different, for example, taking the format as an example, a plurality of terminal devices may include a 5G terminal, a 4G terminal, a 3G terminal, a 2G terminal, and the like.
Specifically, after finding the data combining position, the first host unit may put the first downlink baseband data into the data combining position of the second downlink baseband data, and when placing, may put the first downlink baseband data into the data combining position of the second downlink baseband data before the original data of the second downlink baseband data, or may put the second downlink baseband data into the data combining position after the original data of the second downlink baseband data, and of course, may also be placed in an interleaving manner with the original data of the second downlink baseband data in the data combining position, or even may be placed in other placing manners, which is not specifically limited in this embodiment. After the first downlink baseband data is put into the data combining position in the second downlink baseband data, the data at the data combining position and the data except the data at the data combining position in the second downlink baseband data may be recombined into new baseband data, which is recorded as first recombined data, and the data protocol format of the first recombined data is the data protocol format adopted by the second downlink baseband data, so that the first recombined data may be directly sent to the remote unit corresponding to the first host unit through the original interface. After receiving the first recombined data, the remote unit may split the first recombined data, split the first recombined data into downlink data corresponding to the data protocol format of the first downlink baseband data, and send the downlink data to the terminal device corresponding to the data protocol format, and split the second downlink baseband data into downlink data corresponding to the data protocol format, and send the downlink data to the terminal device corresponding to the data protocol format.
For example, taking a host unit of a 5G standard of a first host unit and a host unit of a 4G standard of a second host unit as an example, in a communication process between each host unit and a remote unit, the first host unit may receive baseband data of the 5G standard and may also receive baseband data of the 4G standard sent by the host unit of the 4G standard, then the first host unit may determine a data combining position from the baseband data of the 4G standard and insert the received baseband data of the 5G standard into the data combining position to obtain baseband data of the 4G standard recombined with the baseband data of the 4G standard after the baseband data of the 5G standard is recombined, and then the first host unit may send the recombined baseband data of the 4G standard to the remote unit, and the remote unit may split the recombined baseband data of the 4G standard, and disassembling 4G standard baseband data and 5G standard baseband data, sending the 4G standard baseband data to a 4G standard terminal, and sending the 5G standard baseband data to a 5G standard terminal. In the communication process, it can be seen that the 4G-standard baseband data and the 5G-standard baseband data can be simultaneously transmitted to the remote unit without hardware modification of the existing first host unit and second host unit, and distributed to the terminal of the corresponding standard through the remote unit, that is, the method can realize the compatibility of the 4G and 5G data of different standards without redeploying new access network equipment, thereby reducing the hardware cost of the access network equipment.
In the signal processing method, the combining position of the first downlink baseband data and the second downlink baseband data is determined according to the data protocol format of the second downlink baseband data, and the first downlink baseband data is directly inserted into the combining position, so that the simultaneous transmission of the two different protocol format data can be realized.
In another embodiment, another signal processing method is provided, and this embodiment relates to a possible implementation manner of how, if first downlink baseband data is downlink data using an eccri protocol, and second downlink baseband data is downlink data using a CPRI protocol, a first host unit determines a data combining position in the second downlink baseband data according to a data protocol format used by the second downlink baseband data. On the basis of the above embodiment, the above S204 may include the following step a:
and step A, determining the position of the Ethernet data field in the second downlink baseband data as a data combining position according to the CPRI protocol adopted by the second downlink baseband data.
In this embodiment, the REC is related to Iub transmission, radio base station control and management, digital baseband processing, and the RE simulates radio frequency functions such as filtering, modulation, frequency conversion, and power amplification, as defined by the CPRI standard. CPRI defines the physical Layer (Layer 1) and data link Layer (Layer 2) protocols, the protocol structure is shown in fig. 5b, the information flow supported by the interface includes IQ data, synchronization, Layer 1 in-band protocol, vendor specific information, control and management data (C & M), etc., wherein IQ data: data (digital baseband signal) format under in-phase and quadrature modulation for user platform information; and (3) synchronization: synchronization data for frame and time adjustment; layer 1 in-band protocol: signal transmission information related to the link and directly transmitted by the physical layer, for system start-up, physical layer link maintenance and transmission of time-critical information closely related to physical layer user data; vendor specific information: this information flow is reserved for vendor specific information; control and management (C & M) data is transmitted as either a band protocol (time critical informationized data) or a layer 3 protocol (not defined by the CPRI specification, on top of the appropriate data link layer), some additional C & M data is time multiplexed with IQ data, CPRI supports two different data link layer protocols for C & M data transmission: a subset of high speed data link control (HDLC) and ethernet, HDLC channel based slow C & M data, high data rate ethernet channel based fast C & M data.
From the above, the fast C in the second downlink baseband data&The channel in which the M data is located is an ethernet channel, that is, the field corresponding to the ethernet channel is an ethernet data field, and the first downlink baseband data is in the form of the eccri protocol, generally ethernet data, and adopts IID/IUThe slicing method can be used to divide the first downlink baseband numberAnd directly putting the data into the Ethernet channel of the second downlink baseband data, namely determining the position of the Ethernet channel in the second downlink baseband data as the data combining position.
After the data combining position is found, optionally, the ethernet data field includes control management data in the second downlink baseband data, so that the first downlink baseband data may be inserted into the ethernet data field after the control management data. That is, after finding the ethernet channel of the second downlink baseband data, the first downlink baseband data may be directly placed into the fast C & M data in the ethernet channel, where the first downlink baseband data may also be referred to as an ecc ri packet, where the ecc ri packet and the fast C & M data form C & M-like data together, and the C & M-like data and other data (e.g., I/Q data, synchronization, etc.) in the second downlink baseband data are recombined together to obtain the first recombined data.
In the signal processing method provided in this embodiment, if the first downlink baseband data is downlink data adopting an eccri protocol, and the second downlink baseband data is downlink data adopting a CPRI protocol, the position of the ethernet data field in the second downlink baseband data may be determined as a data combining position according to the CPRI protocol adopted by the second downlink baseband data. In this embodiment, since the position of the ethernet data field can be directly determined as the data combining position, and the first downlink baseband data is the ethernet data packet, it is convenient to subsequently and rapidly directly place the first downlink baseband data into the position of the ethernet data field, thereby improving the efficiency of overall signal processing.
In an embodiment, another signal processing method is provided, and this embodiment relates to a specific process of how a first host unit splits reassembled data sent by a remote unit and sends the split data to a corresponding core network device and a second host unit in an uplink process from the remote unit to the first host unit. On the basis of the above embodiment, as shown in fig. 6, the method may further include the following steps:
s302, the first host unit receives second recombination data sent by the remote unit; the second reconfiguration data is obtained by combining uplink data adopting an eCPRI protocol and uplink data adopting a CPRI protocol by the remote unit.
Wherein, the second re-grouped data can include at least one group of uplink data adopting eCPRI protocol and at least one group of uplink data adopting CPRI protocol, wherein the uplink data adopting eCPRI protocol uses IID/IUThe uplink data adopting the eCPRI protocol can be sent to the remote unit by the terminal equipment adopting the eCPRI protocol, and the uplink data adopting the CPRI protocol can be sent to the remote unit by the terminal equipment adopting the CPRI protocol; when the remote unit combines the uplink data adopting the eCPRI protocol with the uplink data adopting the CPRI protocol, the remote unit may also find the position of the Ethernet data field in the uplink data adopting the CPRI protocol in the same manner as the step A, and insert the uplink data adopting the eCPRI protocol into the control management data in the position of the Ethernet field to obtain second reassembly data based on the CPRI protocol format.
Specifically, the first host unit and the remote unit may be connected by using a CPRI interface, and then the remote unit may send the second reconfiguration data based on the CPRI protocol format to the first host unit through the CPRI interface between the first host unit and the remote unit after obtaining the second reconfiguration data based on the CPRI protocol format.
And S304, the first host unit splits the second reconfiguration data according to the position of the Ethernet data field in the second reconfiguration data and the data length of the uplink data adopting the eCPRI protocol to obtain the first uplink baseband data sent to the core network equipment and the second uplink baseband data sent to the second host unit.
In this step, optionally, if the location of the ethernet data field includes the start location of the ethernet data field, the splitting of the second reassembly data may include the following steps B1 and B2:
step B1, the first host unit obtains the start position of the uplink data using the eccri protocol according to the start position of the ethernet data field in the second reconfiguration data and the length of the control management data in the ethernet data field.
Step B2, according to the starting position of the uplink data using the eCPRI protocol and the data length of the uplink data using the eCPRI protocol, splitting the second reconfiguration data to obtain the first uplink baseband data sent to the core network device and the second uplink baseband data sent to the second host unit.
Specifically, the control management data in the ethernet data field refers to the above-mentioned fast C & M data, the start position of the ethernet data field is the start position of the fast C & M data, after the first host unit receives the second reconfiguration data, the start position of the fast C & M data in the second reconfiguration data can be found, and the remote unit can also obtain the data content of the fast C & M data in the uplink data using the CPRI protocol after receiving the uplink data using the CPRI protocol, and can obtain the length of the fast C & M data by analyzing the data content of the fast C & M data, and the remote unit can send the length of the fast C & M data to the first host unit, and the first host unit can start from the start position of the fast C & M data in the ethernet channel, and counting the length of the fast C & M data backward, wherein the obtained position is the initial position of the uplink data adopting the eCPRI protocol. For example, assuming that the start position of the fast C & M data is 1 and the length of the fast C & M data is 5, starting from position 1, 5 bits are counted backwards, and the obtained position 6 is the start position of the uplink data using the eccri protocol.
Then, after receiving the uplink data using the eCPRI protocol, the remote unit may also obtain the data length of the uplink data using the eCPRI protocol, and then may also send the data length of the uplink data using the eCPRI protocol to the first host unit, the first host unit may split the second duplicated data based on the data length of the uplink data using the eCPRI protocol and combining with the obtained start position of the uplink data using the eCPRI protocol, where the splitting may be performed starting from the start position of the uplink data using the eCPRI protocol and counting the data length of the uplink data using the eCPRI protocol backwards, and the part of data is split from the second duplicated data to obtain the first uplink baseband data, which is sent to the core network device, and the first host unit may combine the data in the second duplicated data except the uplink data using the eCPRI protocol, and obtaining second baseband data and sending the second baseband data to the second host unit.
In the signal processing method provided in this embodiment, in an uplink process from the remote unit to the first host unit, the first host unit may receive second reconfiguration data sent by the remote unit, and split the second reconfiguration data according to a position of an ethernet data field in the second reconfiguration data and a data length of uplink data using an eccri protocol to obtain first uplink baseband data sent to the core network device and second uplink baseband data sent to the second host unit, where the second reconfiguration data is obtained by combining, by the remote unit, the uplink data using the eccri protocol and the uplink data using the CPRI protocol. In this embodiment, the first host unit may receive the second reassembly data in two different protocol formats, and directly split the uplink second reassembly data according to the position of the ethernet data field and the data length of the uplink data in the eCPRI protocol, without modifying the hardware of the existing first host unit, the method may reduce the hardware cost of the access network device.
Next, the signal processing method according to the embodiment of the present application will be described with reference to the remote unit as an execution subject.
In an embodiment, the present embodiment relates to a specific process in which, in a downlink process from a first host unit to a remote unit, the remote unit receives first reassembly data sent by the first host unit, splits the first reassembly data, and sends the first reassembly data to a corresponding terminal device. As shown in fig. 7, the method may include the steps of:
s402, the remote unit receives first recombined data sent by the first host unit, wherein the first recombined data is obtained by combining the first downlink baseband data and the second downlink baseband data based on the determined data combining position of the first host unit; the data combining position is determined by the first host unit according to a data protocol format adopted by the second downlink baseband data, the first downlink baseband data is sent by the core network equipment, and the second downlink baseband data is sent by the second host unit; the first downlink baseband data and the second downlink baseband data adopt different data protocol formats.
In this step, corresponding to the above S202-S206, the first host unit may determine a data combining position according to a data protocol format of the second downlink baseband data sent by the second host unit, combine the first downlink baseband data sent by the core network device and the second downlink baseband data sent by the second host unit by using the data combining position to obtain first reassembly data, and send the first reassembly data to the remote unit through an interface between the first host unit and the remote unit, so that the remote unit may receive the first reassembly data.
And S404, the remote unit splits the first recombined data and then sends the first recombined data to the corresponding terminal equipment.
Specifically, corresponding to S206, after receiving the first reassembly data, the remote unit may split the first reassembly data, split the first reassembly data into downlink data corresponding to the data protocol format of the first downlink baseband data, and send the downlink data to the terminal device corresponding to the data protocol format, and split the second downlink baseband data into downlink data corresponding to the data protocol format, and send the downlink data to the terminal device corresponding to the data protocol format.
In the signal processing method provided in this embodiment, because the combining position of the first downlink baseband data and the second downlink baseband data is determined according to the data protocol format of the second downlink baseband data, the first downlink baseband data can be directly inserted into the combining position, and the simultaneous transmission of the two different protocol format data can be implemented, so that the method does not need to perform unpacking and packing operations on the first downlink baseband data and the second downlink baseband data, that is, the simultaneous transmission and the splitting of the two different protocol format data can be implemented without performing hardware transformation on the existing host unit and the remote unit, and thus the hardware cost of the access network device can be reduced.
In another embodiment, another signal processing method is provided, and this embodiment relates to a possible implementation manner of how the remote unit splits the first reassembled data if the first downlink baseband data is downlink data using an eccri protocol and the second downlink baseband data is downlink data using a CPRI protocol. On the basis of the above embodiment, the above S404 may include the following step D:
and D, the remote unit splits the first recombined data according to the position of the Ethernet data field in the first recombined data and the data length of the downlink data adopting the eCPRI protocol.
In this step, optionally, if the ethernet data field includes control management data in the second downlink baseband data, the first reassembled data may be split according to the position of the ethernet data field in the first reassembled data, the control management data in the ethernet data field, and the data length of the downlink data using the eCPRI protocol.
Specifically, corresponding to the splitting manner of the second reassembly data in S304, the first reassembly data is split, the first host unit may obtain the data length of the downlink data adopting the eccri protocol and send the data length of the downlink data adopting the eccri protocol to the remote unit when receiving the first downlink baseband data, that is, the downlink data adopting the CPRI protocol, and the first host unit may also obtain the position of the ethernet data field according to the second downlink baseband data, that is, the downlink data adopting the CPRI protocol, where the position of the ethernet data field includes the start position of the ethernet data field, the start position of the ethernet data field is the start position of the fast C & M data, and may also perform data analysis on the fast C & M data in the ethernet data field to obtain the length of the fast C & M data, and sending the length of the fast C & M data to the remote unit, so that after receiving the first recombined data, the data length of the downlink data adopting the eCPRI, the initial position of the fast C & M data, and the length of the fast C & M data, the remote unit can obtain the initial position of the downlink data adopting the eCPRI from the initial position of the fast C & M data to the length of the fast C & M data in the first recombined data, and obtain the downlink data corresponding to the data protocol format of the first downlink baseband data by separating the part of data from the first recombined data from the initial position of the downlink data adopting the eCPRI and sending the downlink data corresponding to the data protocol format to the terminal equipment and obtaining the downlink data corresponding to the data protocol format of the second downlink baseband data from the initial position of the fast C & M data to the length of the downlink data adopting the eCPRI, and sending the data to the terminal equipment corresponding to the data protocol format.
In the signal processing method provided in this embodiment, in a downlink process from the first host unit to the remote unit, the remote unit may split the first reassembled data according to the position of the ethernet data field in the first reassembled data and the data length of the downlink data using the eccri protocol. In this embodiment, the remote unit may directly split the first reassembled data according to the position of the ethernet data field and the data length of the downlink data using the eccri protocol, and may implement the concurrent transmission and splitting of data in two different protocol formats without modifying the hardware of the existing remote unit, so the method may reduce the hardware cost of the access network device.
In another embodiment, another signal processing method is provided, and this embodiment relates to a specific process of how the remote unit determines a data combining position in an uplink process from the remote unit to the first host unit, and combines uplink data using an eCPRI protocol and uplink data using a CPRI protocol according to the data combining position and then sends the combined uplink data to the first host unit. As shown in fig. 8, the method may further include the steps of:
and S502, the remote unit receives the uplink data adopting the eCPRI protocol and the uplink data adopting the CPRI protocol, and determines the data combining position in the uplink data adopting the CPRI protocol according to the CPRI protocol.
In this step, the data combining position in the uplink data is determined, corresponding to the determination of the data combining position in the downlink baseband data in step a. Optionally, the remote unit may determine, according to the CPRI protocol, a position of an ethernet data field in the uplink data using the CPRI protocol as a data combining position. The protocol structure of the uplink data adopting the CPRI protocol is the same as that in fig. 5b, so that the remote unit can obtain the fast C in the uplink data adopting the CPRI protocol&The channel where the M data is located is an Ethernet channel, the corresponding field is an Ethernet data field, the uplink data adopting an eCPRI protocol is Ethernet data, and II is adoptedD/IUIn the segmentation mode, the uplink data adopting the eccri protocol may be directly placed in the ethernet channel of the uplink data adopting the CPRI protocol, that is, the position of the ethernet channel of the uplink data adopting the CPRI protocol is determined as the upstream data combining position.
S504, the remote unit inserts the uplink data adopting the eCPRI protocol into a data combining position in the uplink data adopting the CPRI protocol, and then sends the obtained second recombination data to the first host unit; the first host unit is used for splitting the second repeated data and sending the second repeated data to the core network equipment and the second host unit.
In this step, optionally, if the ethernet data field includes control management data in uplink data of the CPRI protocol, the uplink data of the eccri protocol may be inserted into the ethernet data field after the control management data. That is to say, after finding out the ethernet channel of the uplink data using the CPRI protocol, the uplink data using the eccri protocol may be directly placed into the fast C & M data in the uplink ethernet channel, and then the uplink data using the eccri protocol and the fast C & M data in the uplink ethernet channel are combined into C & M-like data, which is recombined with other data (e.g., I/Q data, synchronization, etc.) in the uplink data using the CPRI protocol to obtain second recombined data, where the data protocol format of the second recombined data is the CPRI protocol format, so that the remote unit may directly send the second recombined data to the corresponding first host unit through the original interface.
After receiving the second reconfiguration data, the first host unit may split the second reconfiguration data into uplink data of the eCPRI protocol and send the uplink data to the core network device corresponding to the eCPRI protocol format, and split the uplink data of the CPRI protocol and send the uplink data to the second host unit corresponding to the CPRI protocol format.
In the signal processing method provided in this embodiment, in an uplink process from the remote unit to the first host unit, the remote unit receives uplink data using an eccri protocol and uplink data using a CPRI protocol, determines a data combining position in the uplink data using the CPRI protocol according to the CPRI protocol, inserts the uplink data using the eccri protocol into the data combining position in the uplink data using the CPRI protocol, and then sends the obtained second reconfiguration data to the first host unit, and the first host unit splits the second reconfiguration data and sends the second reconfiguration data to the core network device and the second host unit. In this embodiment, since the combining position of the CPRI uplink data and the eCPRI uplink data can be directly determined by the CPRI protocol format, and the eCPRI uplink data is directly inserted into the combining position, the simultaneous transmission of the two different protocol format data can be realized on the remote unit, so that the method does not need to perform the unpacking and packing operations on the CPRI uplink data and the eCPRI uplink data, that is, the simultaneous transmission of the two different protocol format data can be realized without performing hardware modification on the existing remote unit, thereby reducing the hardware cost of the access network device.
It should be understood that although the various steps in the flow charts of fig. 5a, 6-8 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 5a, 6-8 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternating with other steps or at least some of the sub-steps or stages of other steps.
In one embodiment, there is provided a first host unit 10, shown in fig. 9, comprising a higher layer protocol processing module 101 and a first signal processing module 102,
a high-level protocol processing module 101, configured to receive first downlink baseband data sent by a core network device, and perform high-level protocol processing on the first downlink baseband data to obtain downlink baseband data after the high-level protocol processing;
the first signal processing module 102 is configured to receive downlink baseband data after a high-level protocol is processed, and obtain first downlink baseband data; receiving second downlink baseband data from the second host unit, and determining a data combining position in the second downlink baseband data according to a data protocol format adopted by the second downlink baseband data; after the first downlink baseband data is inserted into the data combining position, the obtained first recombination data is sent to the remote unit; the first downlink baseband data and the second downlink baseband data adopt different data protocol formats; the remote unit is used for splitting the first recombined data and then sending the split data to the corresponding terminal equipment.
With continued reference to fig. 9, the first host unit 10 may further include a network protocol processing module 103 and an upper layer protocol processing module 104, wherein:
the network protocol processing module 103 is configured to receive downlink baseband data sent by a core network device based on a protocol IP network interconnected among networks during downlink, perform network protocol conversion on the downlink baseband data sent by the protocol IP network to obtain downlink baseband data after network protocol conversion, and send the downlink baseband data to the upper protocol processing module 104; during uplink, performing network protocol conversion on the uplink data processed by the upper layer protocol processing module 104 to obtain the uplink data after the network protocol conversion, and sending the uplink data to the core network equipment;
an upper layer protocol processing module 104, configured to receive the downlink baseband data after the network protocol conversion sent by the network protocol processing module 103, perform upper layer protocol processing on the downlink baseband data after the network protocol conversion to obtain downlink baseband data after the upper layer protocol processing, and send the downlink baseband data to the upper layer protocol processing module 101 for processing; during uplink, uplink protocol processing is performed on the uplink data processed by the higher layer protocol processing module 101 to obtain uplink data processed by the higher layer protocol, and the uplink data is sent to the network protocol processing module 103;
the upper layer protocol processing module 101 is configured to perform upper layer protocol processing on the first uplink baseband data sent by the first signal processing module 102 during uplink to obtain uplink baseband data, mark the uplink baseband data as uplink data processed by the upper layer protocol processing module, and send the uplink baseband data to the upper layer protocol processing module 104;
the first signal processing module 102 is configured to receive second reconfiguration data sent by a remote unit during uplink; the second reassembly data is obtained by combining uplink data adopting an eCPRI protocol with uplink data adopting a CPRI protocol by the remote unit, and the second reassembly data is split according to the position of an Ethernet data field in the second reassembly data and the data length of the uplink data adopting the eCPRI protocol to obtain first uplink baseband data and second uplink baseband data, and the first uplink baseband data is sent to the higher layer protocol processing module 101, and the second uplink baseband data is sent to the second host unit.
In the first host unit of this embodiment, the signal processing module determines the combining position of the first downlink baseband data and the second downlink baseband data according to the data protocol format of the second downlink baseband data, and directly inserts the first downlink baseband data into the combining position, so that the co-transmission of the two different protocol format data can be realized.
In one embodiment, a remote unit 11 is provided, as shown in fig. 10, comprising a second signal processing module 111 and a lower layer protocol processing module 112,
the second signal processing module 111 is configured to receive the first reassembled data sent by the first host unit, split the first reassembled data, and send the split first reassembled data to the corresponding second terminal device and lower-layer protocol processing module; the first recombined data is obtained by combining the first downlink baseband data and the second downlink baseband data based on the determined data combining position by the first host unit; the data combining position is determined by the first host unit according to a data protocol format adopted by the second downlink baseband data, the first downlink baseband data is sent by the core network equipment, and the second downlink baseband data is sent by the second host unit; the first downlink baseband data and the second downlink baseband data adopt different data protocol formats;
and the low-layer protocol processing module 112 is configured to perform low-layer protocol processing on the data obtained by splitting the first recombined data to obtain first downlink baseband data after the low-layer protocol processing, and send the first downlink baseband data after the low-layer protocol processing to the corresponding first terminal device.
As shown in fig. 10, the remote unit 11 may further include a group unpacking module 113, where the group unpacking module 113 is configured to convert the first downlink baseband data processed by the lower layer protocol into the first downlink baseband data in the CPRI format during downlink; and in the uplink, converting the uplink data adopting the CPRI protocol into the uplink data adopting the eccri protocol, and sending the uplink data to the lower layer protocol processing module 112;
the lower layer protocol processing module 112 is further configured to perform lower layer protocol processing on the uplink data adopting the eccri protocol and sent by the packet disassembling module 113 during uplink to obtain uplink data adopting the eccri protocol after the lower layer protocol processing, and send the uplink data to the second signal processing module 111;
the second signal processing module 111 is further configured to receive, during uplink, uplink data processed by a lower layer protocol and using an eccri protocol, determine a data combining position in the uplink data using the CPRI protocol according to the CPRI protocol, insert the uplink data using the eccri protocol into the data combining position in the uplink data using the CPRI protocol, and send obtained second reconfiguration data to the first host unit; the first host unit is used for splitting the second repeated data and sending the second repeated data to the core network equipment and the second host unit.
In the remote unit of this embodiment, the signal processing module determines the combining position of the first downlink baseband data and the second downlink baseband data according to the data protocol format of the second downlink baseband data, and the first downlink baseband data can be directly inserted into the combining position, so that the co-transmission of the two different protocol format data can be realized.
In one embodiment, an access network device is provided, comprising the above-mentioned first host unit 10 and the above-mentioned remote unit 11.
In an embodiment, a multi-system access network device is provided, as shown in fig. 11, and includes the above first host unit 10, the above remote unit 11, the second host unit 12, and a terminal device 13.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (15)
1. A method of signal processing, the method comprising:
a first host unit receives first downlink baseband data sent by core network equipment;
the first host unit receives second downlink baseband data from a second host unit, and determines a data combining position in the second downlink baseband data according to a data protocol format adopted by the second downlink baseband data; the first downlink baseband data and the second downlink baseband data adopt different data protocol formats;
after the first host unit inserts the first downlink baseband data into the data combining position, the first host unit sends the obtained first recombined data to a remote unit; the remote unit is used for splitting the first recombined data and then sending the split first recombined data to corresponding terminal equipment;
the determining the data combining position in the second downlink baseband data according to the data protocol format adopted by the second downlink baseband data includes:
and the first host unit finds the position of a data packet in the protocol format of the second downlink baseband data, which is the same as the data protocol format of the first downlink baseband data, and takes the position as a data combining position.
2. The signal processing method according to claim 1, wherein the first downlink baseband data is downlink data adopting an eccri protocol, the second downlink baseband data is downlink data adopting a CPRI protocol, and the determining a data combining position in the second downlink baseband data according to a data protocol format adopted by the second downlink baseband data includes:
and determining the position of the Ethernet data field in the second downlink baseband data as the data combining position according to the CPRI protocol adopted by the second downlink baseband data.
3. The signal processing method of claim 2, wherein the ethernet data field includes control management data in second downlink baseband data, and the inserting the first downlink baseband data into the data combining position includes:
inserting the first downstream baseband data after the control management data in the Ethernet data field.
4. The signal processing method of claim 3, further comprising:
the first host unit receives second recombination data sent by the remote unit; the second reconfiguration data is obtained by combining uplink data adopting an eCPRI protocol and uplink data adopting a CPRI protocol by the remote unit;
the first host unit splits the second reassembly data according to the position of an ethernet data field in the second reassembly data and the data length of the uplink data adopting the eCPRI protocol, to obtain first uplink baseband data sent to the core network device and second uplink baseband data sent to the second host unit.
5. The signal processing method according to claim 4, wherein the location of the ethernet data field includes a start location of the ethernet data field, and the first host unit splits the second retransmission data according to the location of the ethernet data field in the second retransmission data and the data length of the upstream data using the eCPRI protocol to obtain first upstream baseband data sent to the core network device and second upstream baseband data sent to the second host unit, including:
the first host unit obtains the initial position of the uplink data adopting the eCPRI protocol according to the initial position of an Ethernet data field in the second reconfiguration data and the length of control management data in the Ethernet data field;
and splitting the second recombination data according to the initial position of the uplink data adopting the eCPRI protocol and the data length of the uplink data adopting the eCPRI protocol to obtain first uplink baseband data sent to the core network equipment and second uplink baseband data sent to the second host unit.
6. A signal processing method, comprising:
the remote unit receives first recombined data sent by a first host unit, wherein the first recombined data is obtained by combining first downlink baseband data and second downlink baseband data based on the determined data combining position of the first host unit; the data combining position is determined by the first host unit according to a data protocol format adopted by second downlink baseband data, the first downlink baseband data is sent by core network equipment, and the second downlink baseband data is sent by the second host unit; the first downlink baseband data and the second downlink baseband data adopt different data protocol formats; the data combining position is specifically a position of a data packet, which is found in the protocol format of the second downlink baseband data by the first host unit and has the same data protocol format as the first downlink baseband data;
and the remote unit splits the first recombined data and then sends the first recombined data to the corresponding terminal equipment.
7. The signal processing method according to claim 6, wherein the first downlink baseband data is downlink data adopting an eCPRI protocol, the second downlink baseband data is downlink data adopting a CPRI protocol, and the splitting of the first reassembled data by the remote unit includes:
and the remote unit splits the first recombined data according to the position of an Ethernet data field in the first recombined data and the data length of the downlink data adopting the eCPRI protocol.
8. The signal processing method according to claim 7, wherein the ethernet data field includes control management data in second downlink baseband data, and the splitting the first reassembled data according to the position of the ethernet data field in the first reassembled data and the data length of the downlink data using the eccri protocol includes:
splitting the first recombined data according to the position of an Ethernet data field in the first recombined data, control management data in the Ethernet data field and the data length of the downlink data adopting the eCPRI protocol.
9. The signal processing method of claim 8, further comprising:
the remote unit receives uplink data adopting an eCPRI protocol and uplink data adopting a CPRI protocol, and determines a data combining position in the uplink data adopting the CPRI protocol according to the CPRI protocol;
the remote unit inserts the uplink data adopting the eCPRI protocol into a data combining position in the uplink data adopting the CPRI protocol, and then sends the obtained second recombination data to the first host unit; the first host unit is used for splitting the second repeated data and sending the split data to the core network equipment and the second host unit.
10. The signal processing method according to claim 9, wherein the determining, according to the CPRI protocol, a data combining position in the uplink data using the CPRI protocol includes:
and determining the position of the Ethernet data field in the uplink data adopting the CPRI protocol as the data combining position according to the CPRI protocol.
11. The signal processing method according to claim 10, wherein the ethernet data field includes control management data in uplink data of CPRI protocol, and the inserting the uplink data of CPRI protocol into a data combining position in the uplink data of CPRI protocol comprises:
and inserting the uplink data adopting the eCPRI protocol into the control management data in the Ethernet data field.
12. An access network device comprising a first host unit, a remote unit,
the first host unit for performing the steps of the method of any one of claims 1 to 5;
the remote unit for performing the steps of the method of any one of claims 6 to 11.
13. A first host unit comprising a higher layer protocol processing module and a first signal processing module,
the high-level protocol processing module is used for receiving first downlink baseband data issued by core network equipment and performing high-level protocol processing on the first downlink baseband data to obtain downlink baseband data after the high-level protocol processing;
the first signal processing module is configured to receive the downlink baseband data processed by the high-level protocol to obtain first downlink baseband data; receiving second downlink baseband data from a second host unit, and determining a data combining position in the second downlink baseband data according to a data protocol format adopted by the second downlink baseband data; after the first downlink baseband data is inserted into the data combining position, the obtained first recombination data is sent to a remote unit; the first downlink baseband data and the second downlink baseband data adopt different data protocol formats; the remote unit is used for splitting the first recombined data and then sending the split first recombined data to corresponding terminal equipment; the determining the data combining position in the second downlink baseband data according to the data protocol format adopted by the second downlink baseband data includes: and finding the position of a data packet in the protocol format of the second downlink baseband data, which is the same as the data protocol format of the first downlink baseband data, and taking the position as a data combining position.
14. A remote unit comprising a second signal processing module and a lower layer protocol processing module,
the second signal processing module is configured to receive first reassembly data sent by a first host unit, split the first reassembly data, and send the split first reassembly data to a corresponding second terminal device and the lower layer protocol processing module; the first recombined data is obtained by combining the first downlink baseband data and the second downlink baseband data based on the determined data combining position by the first host unit; the data combining position is determined by the first host unit according to a data protocol format adopted by second downlink baseband data, the first downlink baseband data is sent by core network equipment, and the second downlink baseband data is sent by the second host unit; the first downlink baseband data and the second downlink baseband data adopt different data protocol formats; the data combining position is specifically a position of a data packet, which is found in the protocol format of the second downlink baseband data by the first host unit and has the same data protocol format as the first downlink baseband data;
the low-layer protocol processing module is configured to perform low-layer protocol processing on the data obtained by splitting the first recombined data to obtain first downlink baseband data after the low-layer protocol processing, and send the first downlink baseband data after the low-layer protocol processing to a corresponding first terminal device.
15. A multi-mode access network device, comprising the access network device of claim 12, and a second host unit.
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| CN111372287B (en) * | 2020-03-09 | 2021-09-28 | 京信网络系统股份有限公司 | Signal processing method, access network equipment and multi-system access network equipment |
| CN114007280A (en) * | 2021-11-01 | 2022-02-01 | 深圳市佳贤通信设备有限公司 | 5G and 4G dual-mode 2T2R base station signal radio frequency receiving and transmitting system |
| CN114466470A (en) * | 2021-12-27 | 2022-05-10 | 华为技术有限公司 | Signal processing apparatus and data transmission method |
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| CN102377477B (en) * | 2010-08-27 | 2015-01-21 | 华为技术有限公司 | Baseband signal transmission method and device |
| CN105430666B (en) * | 2015-11-02 | 2019-03-15 | 中国联合网络通信集团有限公司 | A kind of method and optical fiber distribution system of cell access |
| CN107103543B (en) * | 2016-02-23 | 2021-03-30 | 平安科技（深圳）有限公司 | Protocol data processing method and system |
| CN108965345B (en) * | 2018-09-30 | 2021-09-07 | 武汉斗鱼网络科技有限公司 | Method and device for optimizing small signaling network data packet |
| CN109982338B (en) * | 2019-03-26 | 2022-08-12 | 广州开信通讯系统有限公司 | Multi-standard digital optical fiber distribution system and method for covering signals of downlink and uplink by using same |
| CN111372287B (en) * | 2020-03-09 | 2021-09-28 | 京信网络系统股份有限公司 | Signal processing method, access network equipment and multi-system access network equipment |
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| CN103535068A (en) * | 2013-05-29 | 2014-01-22 | 华为技术有限公司 | Data transmission method, device, equipment, and base station |
| CN105682106A (en) * | 2014-11-18 | 2016-06-15 | 中国移动通信集团上海有限公司 | Multi-standard compatible in-building coverage design method and apparatus |
| CN107360142A (en) * | 2017-06-26 | 2017-11-17 | 京信通信系统（中国）有限公司 | Multi-standard mixed networking Transmission system and transmission method based on CPRI frameworks |
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