CN113115478B - Air interface data acquisition method and device and BBU - Google Patents

Abstract

The embodiment of the application provides an air interface data acquisition method, an air interface data acquisition device and a BBU (baseband processing unit), wherein the method is applied to a proxy module in a BBU (baseband processing unit), the proxy module is arranged between an L1 module and an L2 module in the BBU, and is respectively in communication connection with an L1 module and an L2 module, and the method comprises the following steps: receiving a first message sent by an L1 module or an L2 module; the first message is an interactive message transmitted between the L1 module and the L2 module; and after determining that the first message contains the target air interface data based on the message type, analyzing the first message to acquire the target air interface data. By the method and the device for acquiring the air interface data and the BBU, the coupling degree of a data acquisition function and base station protocol software is reduced, complete air interface data can be acquired on the premise of not modifying the logic of the base station software, and the influence on the stability and the performance of the base station is avoided.

Description

Air interface data acquisition method, device and BBU

technical field

The present application relates to the field of wireless communication technologies, and in particular, to a method, an apparatus and a BBU for acquiring air interface data.

Background technique

In wireless network data, the importance of baseband air interface data is particularly prominent. For example, air interface parameters such as throughput rate, resource allocation, transmission mode, channel quality, and bit error rate are the basic inputs of the radio resource management algorithm. However, it is also relatively difficult to obtain air interface data, because the amount of air interface data is large, and a large amount of data is generated every millisecond, which brings great pressure to data collection and transmission.

At present, the acquisition of air interface data mainly includes two schemes: acquisition by drive test equipment and acquisition by base station software. Collection through drive test equipment means that the drive test equipment accesses the network in the form of a terminal and collects data while doing various services. However, with this solution, the drive test equipment can only obtain data related to the equipment itself, but not the data of the entire cell. And limited by the openness of the interface of the drive test equipment, the granularity of the data that can usually be obtained is large, the parameter types are incomplete, and cannot be customized; while the acquisition through the base station software refers to the L1 and L2 software modules as the data source, that is, the L1 and the L2 software module collect and count data through code logic and write the data to a file or send it to an external module. This solution can obtain complete air interface data, but each time a new data requirement is added, the base station software code needs to be modified, which affects the software performance. In addition, the data collection function is scattered throughout the code, which is difficult to maintain, and because of the large amount of air interface data, using the base station software module to collect will affect the performance of the software itself, which in turn affects the real-time performance of the system.

SUMMARY OF THE INVENTION

In view of the problems existing in the prior art, the embodiments of the present application provide a method, an apparatus, and a BBU for acquiring air interface data.

In the first aspect, an embodiment of the present application provides a method for acquiring air interface data, which is applied to a proxy module in a baseband processing unit BBU, where the proxy module is arranged between the L1 module and the L2 module in the BBU, and is respectively connected with the L1 module and the L2 module in the BBU. The L1 module and the L2 module establish a communication connection, and the method includes:

receiving a first message sent by the L1 module or the L2 module; the first message is an interactive message transmitted between the L1 module and the L2 module;

After it is determined based on the message type that the first message contains target air interface data, the first message is parsed to obtain the target air interface data.

Optionally, after receiving the first message sent by the L1 module or the L2 module, the method further includes:

forwarding the first message received from the L2 module to the L1 module; or

The first message received from the L1 module is forwarded to the L2 module.

Optionally, after acquiring the target air interface data, the method further includes:

The target air interface data is sent to a data processing system, so that the data processing system can perform data association and information extraction on the target air interface data.

Optionally, establishing a communication connection with the L1 module and the L2 module respectively includes:

Based on the same interface communication mode, a communication connection is established with the L1 module and the L2 module respectively.

Optionally, the interface communication mode is a shared memory interface communication mode;

The receiving the first message sent by the L1 module or the L2 module includes:

Receive data address information sent by the L1 module or the L2 module through the operating system kernel; the data address information is used to indicate the address of the first message in the shared memory;

The first message is read from the shared memory based on the data address information.

Optionally, the interface communication mode is a user datagram protocol UDP interface communication mode;

The receiving the first message sent by the L1 module or the L2 module includes:

The first message sent by the L1 module or the L2 module is received at the address of the receiving socket; the receiving socket includes a first receiving socket and a second receiving socket, the first receiving socket A receiving socket is used for receiving messages sent by the L1 module, and the second receiving socket is used for receiving messages sent by the L2 module.

Optionally, the target air interface data includes at least one of the following:

The data content transmitted by the uplink and downlink data channels;

Uplink and downlink transmission data block size;

Uplink and downlink channel time-frequency resource physical resource block PRB allocation results;

Uplink and downlink data transmission mode, MIMO, beam and power information;

Modulation and coding mode of uplink and downlink transmission;

Uplink and downlink data transmission results;

The downlink channel channel quality indication CQI, the precoding matrix indication PMI or the rank indication RI and other information fed back by the user equipment UE;

The signal-to-interference-plus-noise ratio SINR or timing advance TA of the uplink channel measured by the L1 module;

Configuration, decoding and measurement results of channels such as physical random access channel PRACH, physical uplink control channel PUCCH or channel sounding reference signal SRS;

Transmission content of channels such as physical broadcast channel PBCH or physical downlink control channel PDCCH;

Configuration of reference signals such as demodulation reference signal DMRS or channel state information reference signal CSI-RS.

In a second aspect, an embodiment of the present application further provides a device for acquiring air interface data, which is applied to a proxy module in a baseband processing unit BBU, where the proxy module is disposed between the L1 module and the L2 module in the BBU, and is respectively Establishing a communication connection with the L1 module and the L2 module, the device includes:

an interface module, configured to receive a first message sent by the L1 module or the L2 module; the first message is an interactive message transmitted between the L1 module and the L2 module;

A data parsing module, configured to parse the first message after determining that the first message contains target air interface data based on the message type, and obtain the target air interface data.

In a third aspect, an embodiment of the present application further provides a baseband processing unit BBU, including:

The L1 module, the L2 module and the proxy module arranged between the L1 module and the L2 module, the proxy module establishes a communication connection with the L1 module and the L2 module respectively;

The proxy module is configured to execute the steps of the method for acquiring air interface data described in the first aspect.

Optionally, the proxy module establishes a communication connection with the L1 module and the L2 module respectively based on a shared memory interface communication mode;

The L1 module, the L2 module and the proxy module map the same named shared memory to the virtual address spaces of the respective processes, and the proxy module establishes an inter-process communication interface mapping with the L1 module and the L2 module respectively.

Optionally, the proxy module establishes a communication connection with the L1 module and the L2 module respectively based on a UDP interface communication mode;

The proxy module is preconfigured with a first receiving socket and a second receiving socket, the first receiving socket is the peer socket of the L1 module, and the second receiving socket is the L2 module the peer socket.

In the method, device and BBU for obtaining air interface data provided by the embodiments of the present application, by setting a proxy module between the L1 module and the L2 module in the BBU, the proxy module can receive the interactive message transmitted between the L1 module and the L2 module, and The target air interface data is obtained from it, which reduces the coupling between the data acquisition function and the base station protocol software, and can collect complete air interface data without modifying the base station software logic, avoiding the impact on the stability and performance of the base station.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

Fig. 1 is the schematic diagram of L2 software module acquisition data provided by the prior art;

2 is one of the schematic flowcharts of the method for acquiring air interface data provided by an embodiment of the present application;

3 is a schematic structural diagram of a BBU architecture and an external data processing system provided by an embodiment of the present application;

FIG. 4 is the second schematic flowchart of the method for acquiring air interface data provided by an embodiment of the present application;

5 is a schematic diagram of a shared memory interface communication mode provided by the prior art;

FIG. 6 is one of the implementation schematic diagrams of the method for acquiring air interface data provided by the embodiment of the present application;

7 is a schematic diagram of a UDP interface communication mode provided by the prior art;

FIG. 8 is the second schematic diagram of the implementation of the method for acquiring air interface data provided by the embodiment of the present application;

FIG. 9 is a schematic structural diagram of an apparatus for acquiring air interface data provided by an embodiment of the present application.

Detailed ways

The term "and/or" in the embodiments of the present application describes the association relationship between associated objects, indicating that three relationships can exist. For example, A and/or B can indicate that A exists alone, A and B exist simultaneously, and B exists alone these three situations. The character "/" generally indicates that the associated objects are an "or" relationship.

In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

For a long time, wireless access network air interface data is of great significance for protocol alignment between devices, network system-level performance analysis, and network planning and optimization. With the rapid deployment of 5G networks, the need for intelligent network management, control and tuning using advanced technologies such as artificial intelligence and big data is becoming more and more intense. Artificial intelligence technology uses massive historical data for model training, and obtains real-time or near-real-time control instructions through the derivation of real-time network data to dynamically control the network. In the process of network intelligent control, whether it is training or derivation, it must be driven by high-quality wireless network data.

Alliances such as O-RAN (Open-Radio Access Network, Open Radio Access Network) introduce an open radio access network architecture, and take the wireless intelligent control function as an important part thereof. Under this architecture, intelligent control algorithms can be deployed into the network as third-party applications. The introduction of third-party ecology will inevitably bring about the demand for data diversification. Diversity is not only reflected in the types of parameters, but also includes the diversity of statistics, calculations and correlation methods.

In a traditional access network, the way for the network management system to obtain network data is that the base station reports some predefined statistical parameters. The meaning and format of these data are relatively fixed and cannot be added dynamically; the reporting period is long, for example, once every 15 minutes, the real-time data is poor. Because it is a statistical value and the data granularity is large, it cannot reflect the rapid changes of the network. Obviously, traditional network data cannot meet the needs of intelligent management and control of open wireless networks. Obtaining real-time, fine-grained, and multi-dimensional network data has become a new challenge for 5G networks.

Although the complete air interface data can be obtained from the baseband software module in the base station, due to the tight coupling between the data collection function and the code logic of the L1 software module and the L2 software module, each time a new data requirement is added, the base station software code needs to be modified, which affects the The stability of the software; and the data collection function is scattered everywhere in the code, which is difficult to maintain. Figure 1 is a schematic diagram of the L2 software module provided by the prior art to collect data. As shown in Figure 1, the transmission parameters, bit error rate, channel quality The processing is scattered in different sub-modules, so the data acquisition in the L2 software module requires the participation of multiple sub-modules, which is difficult to maintain; in addition, due to the large amount of air interface data, the use of the base station software module to collect data will also affect the performance of the software itself , which affects the real-time performance of the system; and, due to the different implementations of base station software of various manufacturers, it is currently impossible to provide a general third-party data acquisition scheme.

In view of the above problems, the embodiments of the present application provide a solution, in which the interface messages of the L1 software module and the L2 software module are analyzed by an intermediate agent software module independent of the base station protocol stack software, so as to obtain original air interface data; and external data is used. The processing system performs post-processing on the original data to provide various types of information that meet the needs of users. The implementation of this solution reduces the coupling between the data acquisition function and the base station protocol software, and can collect complete air interface data without modifying the base station software logic, thereby avoiding the impact on the stability and performance of the base station, and providing independent services for third parties. The data acquisition scheme implemented by base station software provides the possibility.

2 is a schematic flowchart of a method for acquiring air interface data provided by an embodiment of the present application, the method is applied to a proxy module in the baseband processing unit BBU, and the proxy module is arranged between the L1 module and the L2 module in the BBU, and is respectively connected with the L1 module. The module and the L2 module establish a communication connection, as shown in Figure 2, the method includes the following steps:

Step 200: Receive the first message sent by the L1 module or the L2 module; the first message is an interactive message transmitted between the L1 module and the L2 module;

Specifically, in order to collect complete air interface data without modifying the software logic of the base station, so as to avoid influence on the stability and performance of the base station, in this embodiment of the present application, the original BBU (Base Band Unit, baseband processing unit) On the basis of the software module, an agent software module (ie, an agent module) is added, which is responsible for data collection. The agent module is set between the L1 and L2 modules, and establishes a communication connection with the L1 and L2 modules respectively.

When the L1 module needs to transmit interactive messages to the L2 module or the L2 module needs to transmit interactive messages to the L1 module, these interactive messages can be sent to the proxy module, so that the proxy module can receive these interactive messages and obtain the required air interface data from it. It can be understood that the interactive messages transmitted between the L1 module and the L2 module will contain various baseband air interface data, and by receiving and analyzing these interactive messages, complete air interface data can be obtained.

Step 201: After determining that the first message contains target air interface data based on the message type, parse the first message to obtain target air interface data.

Specifically, after the proxy module receives the interaction messages transmitted between the L1 module and the L2 module, it can judge whether the received interaction messages are useful messages or useless messages according to the message types of these interaction messages, so as to determine whether the interaction is required. The message is parsed to extract the target air interface data. Among them, the useful message type refers to the preset message type that needs to be parsed, and this type of message usually contains the air interface data that needs to be collected, that is, the target air interface data; and the useless message type refers to other than the useful message type. For other message types, this type of message usually does not contain the air interface data that needs to be collected.

It should be noted that the useful message types and useless message types can be adjusted according to the actual data collection needs. For example, when data in all interactive messages needs to be collected, all message types can be set as useful message types, and only the When collecting some interesting air interface data, it is also possible to set only the message types that may contain these air interface data as useful message types.

If it is determined that the message is a useful message type according to the type of the received interaction message, it indicates that the message contains the air interface data to be collected, and is a message that needs to be extracted. Get target air interface data. For example, in the downlink data transmission configuration message of a certain time slot sent by the L2 module to the L1 module, data information such as the time-frequency resource location, modulation mode, data block size, transmission mode, etc. of the transmission can be obtained. The time granularity of the acquired target air interface data can be in a time slot. After extracting the data, the proxy module can identify the data according to the frame number, time slot number, RNTI (Radio Network Temporary Identifier, wireless network temporary identifier), etc.

Optionally, the above target air interface data includes at least one of the following:

(1) The data content transmitted by the uplink and downlink data channels;

(2) The size of the uplink and downlink transmission data blocks;

(3) PRB (Physical Resource Block) allocation result of uplink and downlink channel time-frequency resources;

(4) Uplink and downlink data transmission mode, Multiple Input Multiple Output MIMO (Multi Input Multi Output), beam and power information;

(5) Modulation and coding mode of uplink and downlink transmission;

(6) Results of uplink and downlink data transmission;

(7) Information such as the downlink channel channel quality indicator CQI (Channel Quality Indicator), the precoding matrix indicator PMI (Precoding Matrix Indicator) or the rank indicator RI (Rank Indicator) fed back by the user equipment UE (User Equipment);

(8) The signal to interference plus noise ratio SINR (Signal to Interference plus Noise Ratio) or the timing advance TA (Timing Advance) of the uplink channel measured by the L1 module;

(9) Configuration, decoding and measurement results of channels such as physical random access channel PRACH (Physical Random Access Channel), physical uplink control channel PUCCH (Physical Uplink Control Channel) or channel sounding reference signal SRS (Sounding Reference Signal);

(10) Transmission content of channels such as physical broadcast channel PBCH (Physical Broadcast Channel) or physical downlink control channel PDCCH (Physical Downlink Control Channel);

(11) Configuration of reference signals such as demodulation reference signal DMRS (Demodulation Reference Signal) or channel state information reference signal CSI-RS (Channel State Information-Reference Signal).

It should be noted that the above target air interface data is only a part, not all, listed in the embodiments of the present application. According to actual application scenarios, the air interface data understood by those skilled in the art can be the targets described in the embodiments of the present application. Air interface data.

In the method for obtaining air interface data provided by the embodiments of the present application, by setting a proxy module between the L1 module and the L2 module in the BBU, the proxy module can receive the interactive message transmitted between the L1 module and the L2 module, and obtain the target from it. Air interface data, thereby reducing the coupling between the data acquisition function and the base station protocol software, can collect complete air interface data without modifying the base station software logic, avoiding the impact on the stability and performance of the base station.

Optionally, after receiving the first message sent by the L1 module or the L2 module, the method further includes:

forwarding the first message received from the L2 module to the L1 module; or

The first message received from the L1 module is forwarded to the L2 module.

Specifically, in the embodiment of the present application, no direct interface connection is established between the L1 module and the L2 module, and the interactive messages transmitted between the L1 module and the L2 module can be forwarded through the proxy module, thereby ensuring that the L1 module and the L2 module are forwarded. Normal message transmission can be performed between modules to avoid affecting the original functions of the base station.

Optionally, after obtaining the target air interface data, the method further includes:

The target air interface data is sent to the data processing system for the data processing system to perform data association and information extraction on the target air interface data.

Specifically, in the embodiment of the present application, after acquiring the target air interface data, the proxy module can send the target air interface data to a data processing system deployed outside. After collecting a certain amount of data, it is sent in batches, or it can be set to be sent periodically.

The externally deployed data processing system can perform post-processing on the data after receiving the target air interface data, including data association and information extraction.

The data association may be generated in different time slots, and is associated with the target air interface data of the same transmission. Different information of the same transmission may be scattered in different original data. For example, a downlink transmission and result feedback occur in different time slots, so transmission parameter data and result data are generated at different times and come from different messages. In order to facilitate information extraction, the data processing system can correlate data and establish a mapping between transmission parameters and results.

Information extraction can be based on the needs of data users to conduct inductive statistics on data in different time dimensions, and extract different types of information. For example, when the user needs the relationship between the bit error rate and interference, the system can count the bit error rate and average SNR based on the time granularity of the original transmission result data and interference measurement data. The change law of the two determines the degree of correlation between the two.

In the method for obtaining air interface data provided by the embodiments of the present application, after the agent module obtains the target air interface data, the target air interface data can also be sent to an externally deployed data processing system for post-processing, so that the original obtained air interface data can be flexibly obtained. Extract various statistics to meet various changing needs.

Optionally, establishing a communication connection with the L1 module and the L2 module respectively includes:

Based on the same interface communication mode, communication connections are established with the L1 module and the L2 module respectively.

Specifically, in this embodiment of the present application, the proxy module may establish a communication connection with the L1 module and the L2 module respectively based on the same interface communication mode, such as a shared memory interface communication mode or a UDP (User Datagram Protocol, User Datagram Protocol) interface communication mode Etc., there is no specific limitation here, it can be selected according to the actual application scenario, as long as the same interface communication method as that between the original L1 module and the L2 module is used, for example, the L1 module and the L2 module in the original BBU are used between the L1 module and the L2 module. The communication connection established by the shared memory interface communication method, the proxy module can establish a communication connection with the L1 module and the L2 module respectively based on the shared memory interface communication mode, so that the increase of the proxy module is transparent to the L1 module and the L2 module, avoiding the L1 module and the L2 module. The original function of the module is affected.

3 is a schematic structural diagram of a BBU architecture and an external data processing system provided by an embodiment of the present application, as shown in FIG. 3 , in this embodiment, an agent software module is added on the basis of the original software module of the BBU, which is responsible for data collection ; The externally deployed data processing system is responsible for data reception and post-processing.

In this architecture, the L1 module and the L2 module no longer establish a direct interface connection. The proxy module acts between the L1 module and the L2 module, and establishes interface connections with the L1 module and the L2 module respectively; the L1 module and the proxy module and the L2 module and the proxy module use the same interface communication method between the original L1 module and the L2 module. Therefore, the addition of proxy modules is transparent to L1 modules and L2 modules. The interactive messages between the L1 module and the L2 module are forwarded through the proxy module.

FIG. 4 is a schematic flowchart of a method for acquiring air interface data provided by an embodiment of the present application. As shown in FIG. 4 , the method includes the following steps:

Step 400, parsing the interface message.

After receiving the interface message sent by the L1 or L2 module, the proxy module forwards the message, and parses the message at the same time to determine whether the message type is a message type containing valid data information (ie, air interface data information to be collected).

If the L1 and L2 modules use a standard interface message format, such as a FAPI (Functional Application Platform Interface, functional application platform interface) interface, the proxy module can parse according to the standard format. If the L1 and L2 modules use a custom interface message format, the proxy module parses according to the custom format.

Step 401, raw data extraction.

Proxy modules get useful raw data from interface messages. For example, in the downlink data transmission configuration message of a certain time slot sent by the L2 module to the L1 module, information such as the time-frequency resource location, modulation mode, data block size, transmission mode, etc. of the transmission can be obtained. The temporal granularity of raw data is usually measured in time slots. After extracting the data, the proxy module can identify the data according to the frame number, time slot number, RNTI, etc.

The message passed between the L1 module and the L2 module contains the air interface data of each time slot, including:

(1) The data content transmitted by the uplink and downlink data channels;

(2) The size of the uplink and downlink transmission data blocks;

(3) PRB allocation result of uplink and downlink channel time-frequency resources;

(4) uplink and downlink data transmission mode, MIMO, beam and power information;

(5) Modulation and coding mode of uplink and downlink transmission;

(6) Results of uplink and downlink data transmission;

(7) Information such as downlink channel CQI, PMI or RI fed back by the UE;

(8) The SINR or TA of the uplink channel measured by the L1 module;

(9) Configuration, decoding and measurement results of channels such as PRACH, PUCCH or SRS;

(10) Transmission content of channels such as PBCH or PDCCH;

(11) Configuration of reference signals such as DMRS or CSI-RS.

In addition, the MAC (Medium Access Control, Medium Access Control) PDU (Protocol Data Unit, Protocol Data Unit) transmitted between the L1 module and the L2 module is decoded, and the air interface data information of the RRC (Radio Resource Control, Radio Resource Control) layer can also be obtained. .

Step 402, data transmission.

The agent module sends the collected raw data to the data processing system. Depending on the requirements for real-time data, data transmission can be carried out in real time or in batches after collecting a certain amount of data.

Step 403, data reception.

The data processing system receives the raw data and stores the data.

Step 404, data association.

Different information of the same transmission may be scattered in different raw data. For example, a downlink transmission and result feedback occur in different time slots, so transmission parameter data and result data are generated at different times and originate from different messages. In order to facilitate information extraction, the data processing system needs to correlate data and establish a mapping between transmission parameters and results.

Step 405, information extraction.

The data processing system summarizes the data in different time dimensions according to the needs of data users, and extracts different types of information. For example, when the user needs the correlation between the bit error rate and interference, the system can perform statistics on the bit error rate and average signal-to-noise ratio based on the time granularity of the original transmission result data and interference measurement data. The user judges the degree of correlation between the two according to the change rule of the extracted data.

Compared with the existing air interface data collection solution, this embodiment has the following advantages:

(1) Fine-grained and complete wireless network air interface data can be obtained;

(2) The data processing system can flexibly extract various statistical information on the basis of the original data to meet various changing needs;

(3) The data collection function is decoupled from the baseband software module, and the data collection can be completed without modifying the L1 and L2 module software codes, which reduces the difficulty of collection and reduces the impact on the stability of the base station;

(4) The functions of data acquisition and processing can be provided by third parties, which facilitates the unification of data formats;

(5) The collection and processing of data do not occupy the processing resources of the L1 and L2 modules, so the impact on the performance of the base station is small.

Optionally, the interface communication mode is a shared memory interface communication mode;

The receiving the first message sent by the L1 module or the L2 module includes:

Receive the data address information sent by the L1 module or the L2 module through the operating system kernel; the data address information is used to indicate the address of the first message in the shared memory;

Based on the data address information, the first message is read from the shared memory.

Specifically, the interface communication modes of the L1 and L2 modules of different base stations are different, and the proxy module needs to be adapted according to the specific communication mode. In the embodiment of the present application, the proxy module may establish a communication connection with the L1 module and the L2 module respectively based on the shared memory interface communication mode, including: the L1 module, the L2 module and the proxy module map the same named shared memory address to the virtual address space of their respective processes ; The agent module establishes the inter-process communication interface mapping with the L1 module and the L2 module respectively.

When the L1 module needs to pass interactive messages to the L2 module or the L2 module needs to pass interactive messages to the L1 module, the L1 module or the L2 module can first write these interactive messages into the shared memory through a virtual address, and use the operating system kernel to transfer these interactive messages. The data address information in the shared memory is sent to the proxy module, so that the proxy module can, after receiving the data address information, read the interaction message from the shared memory according to the data address information, and determine that the interaction message contains the target After the air interface data is obtained, the target air interface data is obtained from the interactive message.

FIG. 5 is a schematic diagram of a shared memory interface communication mode provided by the prior art. As shown in FIG. 5 , the process of sending and receiving messages between the L1 module and the L2 module includes the following steps:

In step 500, the L1 and L2 modules map the same named shared memory into their respective virtual address spaces.

In step 501, the L1 and L2 modules establish an inter-process communication interface mapping by means of a semaphore or the like.

Step 502: When the L2 module needs to send a message to the L1 module, the L2 module writes the message into the shared memory through the virtual address.

Step 503: The L2 module sends the address of the message in the shared memory to the L1 module through the operating system kernel, and wakes up the L1 through the kernel.

Step 504: The L1 module reads data from the shared memory according to the received message address.

6 is a schematic implementation diagram of a method for obtaining air interface data provided by an embodiment of the present application. As shown in FIG. 6 , the proxy module establishes a communication connection with the L1 module and the L2 module respectively based on the shared memory interface communication mode, and the method includes the following steps:

In step 600, the L1 module, the L2 module and the proxy module map the same named shared memory address to the virtual address space of the respective process.

Step 601: The proxy module establishes an inter-process communication interface mapping with the L2 module process by means of semaphores or the like.

Step 602: The L1 module establishes an inter-process communication interface mapping with the proxy module by means of semaphores or the like.

Step 603: The L2 module writes data into the shared memory through the virtual address.

Step 604: The L2 interface module sends the address information of the written data to the proxy module through the operating system kernel, and wakes up the proxy process through the kernel.

Step 605: The proxy module reads the data from the shared memory according to the data address information received by the interface module 2, and copies the data to the independent memory if it is useful data.

Step 606: The interface module 1 of the proxy module sends the address information of the received data to the L1 module through the kernel, and wakes up the L1 process through the kernel.

Step 607: The L1 module reads data from the shared memory according to the data address information received by the interface module.

Step 608: The proxy module parses and sends the local data.

Optionally, the interface communication mode is a user datagram protocol UDP interface communication mode;

The receiving the first message sent by the L1 module or the L2 module includes:

Receive the first message sent by the L1 module or the L2 module at the address of the receiving socket; the receiving socket includes a first receiving socket and a second receiving socket, and the first receiving socket is used to receive the L1 module The message sent, the second receiving socket is used to receive the message sent by the L2 module.

Specifically, in this embodiment of the present application, the proxy module may establish a communication connection with the L1 module and the L2 module respectively based on the UDP interface communication mode, including: preconfiguring the first receiving socket and the second receiving socket, the first receiving socket The socket is used to receive the message sent by the L1 module, and the second receiving socket is used to receive the message sent by the L2 module; configure the peer socket address of the L1 module as the first receiving socket, The end socket address is configured as the second receive socket.

When the L1 module needs to pass interactive messages to the L2 module or the L2 module needs to pass interactive messages to the L1 module, the L1 module or the L2 module can send these interactive messages to the proxy module through the send socket in the respective module, so that the proxy module can These interactive messages are received on the address of the first receiving socket or the second receiving socket, and after it is determined that these interactive messages contain target air interface data, the target air interface data is obtained from these interactive messages.

FIG. 7 is a schematic diagram of a UDP interface communication mode provided by the prior art. As shown in FIG. 7 , the process of sending and receiving messages between the L1 module and the L2 module includes the following steps:

Step 700: The sending end sends data to the preconfigured socket address of the opposite end by using the socket socket.

Step 701: The receiver receives a message on a preconfigured socket address.

8 is a schematic diagram of the implementation of the method for obtaining air interface data provided by the embodiment of the present application. As shown in FIG. 8 , the proxy module establishes a communication connection with the L1 module and the L2 module respectively based on the UDP interface communication mode, and the method includes the following steps:

Step 800: The proxy module preconfigures two receiving sockets socket1 and socket2 for respectively receiving messages sent by the L1 module and the L2 module. Configure the peer socket address of the L1 module as socket1; configure the peer socket address of the L2 module as socket2.

In step 801, the L1 module and the L2 module use the socket socket to send data to the preconfigured socket address of the opposite end.

Step 802, the proxy module receives the message on socket1 and socket2, and after receiving the message, copies the message locally and forwards it to the L2 module and the receiving socket of the L1 module.

Step 803, the proxy module parses and sends the local data.

The methods and devices provided by the embodiments of the present application are conceived based on the same application. Since the methods and devices have similar principles for solving problems, the implementations of the devices and methods can be referred to each other, and repeated descriptions will not be repeated.

9 is a schematic structural diagram of an apparatus for acquiring air interface data provided by an embodiment of the present application. The apparatus is applied to a proxy module in a baseband processing unit BBU. The module and the L2 module establish a communication connection, as shown in Figure 9, the device includes:

The interface module 900 is configured to receive the first message sent by the L1 module or the L2 module; the first message is the interactive message transmitted between the L1 module and the L2 module;

The data parsing module 910 is configured to parse the first message after determining that the first message contains target air interface data based on the message type to obtain the target air interface data.

Optionally, the interface module 900 is further configured to: forward the first message received from the L2 module to the L1 module; or forward the first message received from the L1 module to the L2 module.

Optionally, the device also includes:

The data transmission module 920 is configured to send the target air interface data to the data processing system, so that the data processing system can perform data association and information extraction on the target air interface data.

Optionally, the interface module 900 is further configured to: establish a communication connection with the L1 module and the L2 module respectively based on the same interface communication mode.

Optionally, the interface communication mode is a shared memory interface communication mode; the interface module 900 is configured to: receive the data address information sent by the L1 module or the L2 module through the operating system kernel; the data address information is used to indicate the first message The address in the shared memory; based on the data address information, the first message is read from the shared memory.

Optionally, the interface communication mode is a user datagram protocol UDP interface communication mode; the interface module 900 is configured to: receive the first message sent by the L1 module or the L2 module at the address of the receiving socket; receive the socket The socket includes a first receiving socket and a second receiving socket, the first receiving socket is used for receiving the message sent by the L1 module, and the second receiving socket is used for receiving the message sent by the L2 module.

Optionally, the target air interface data includes at least one of the following: data content transmitted by uplink and downlink data channels; size of uplink and downlink transmission data blocks; uplink and downlink channel time-frequency resource physical resource block PRB allocation results; uplink and downlink data transmission modes, Multiple input multiple output MIMO, beam and power information; uplink and downlink transmission modulation and coding methods; uplink and downlink data transmission results; downlink channel channel quality indication CQI, precoding matrix indication PMI or rank indication RI and other information fed back by user equipment UE; L1 module Measured results such as signal-to-interference-plus-noise ratio SINR or timing advance TA of the uplink channel; configuration, decoding, and measurement results of channels such as physical random access channel PRACH, physical uplink control channel PUCCH, or channel sounding reference signal SRS ; Transmission content of channels such as physical broadcast channel PBCH or physical downlink control channel PDCCH; configuration of reference signals such as demodulation reference signal DMRS or channel state information reference signal CSI-RS.

It should be noted that, the division of modules in the embodiments of the present application is schematic, and is only a logical function division, and there may be other division manners in actual implementation. In addition, each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist physically alone, or two or more modules may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules.

If the integrated modules are implemented in the form of software functional modules and sold or used as independent products, they may be stored in a processor-readable storage medium. Based on this understanding, the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that make contributions to the prior art, or all or part of the technical solutions, which are stored in a storage medium. , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

It should be noted here that the above-mentioned device provided by the embodiment of the present application can realize all the method steps realized by the above-mentioned method embodiment, and can achieve the same technical effect, and the same as the method embodiment in this embodiment is not repeated here. The parts and beneficial effects will be described in detail.

On the other hand, an embodiment of the present application also provides a baseband processing unit BBU, including: an L1 module, an L2 module, and an agent module arranged between the L1 module and the L2 module, and the agent module establishes a communication connection with the L1 module and the L2 module respectively. The proxy module is used to execute any one of the methods provided by the above-mentioned embodiments, for example: receiving the first message sent by the L1 module or the L2 module; the first message is the interactive message transmitted between the L1 module and the L2 module; based on the message After the type is determined that the first message contains the target air interface data, the first message is parsed to obtain the target air interface data.

Optionally, the proxy module establishes a communication connection with the L1 module and the L2 module respectively based on the shared memory interface communication mode; the L1 module, the L2 module and the proxy module map the same named shared memory to the virtual address space of the respective process, and the proxy module Establish inter-process communication interface mapping with L1 module and L2 module respectively.

Optionally, the proxy module establishes a communication connection with the L1 module and the L2 module based on the UDP interface communication mode; the proxy module is preconfigured with a first receiving socket and a second receiving socket, and the first receiving socket is The peer socket of the L1 module, and the second receiving socket is the peer socket of the L2 module.

It should be noted here that the above-mentioned BBU provided in the embodiment of the present application can implement all the method steps implemented by the above-mentioned method embodiment, and can achieve the same technical effect, and the same as the method embodiment in this embodiment is not repeated here. The parts and beneficial effects will be described in detail.

Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims (11)

1. An air interface data acquisition method is applied to a proxy module in a baseband processing unit (BBU), where the proxy module is disposed between an L1 module and an L2 module in the BBU, and establishes communication connections with the L1 module and the L2 module, respectively, and the method includes:

receiving a first message sent by the L1 module or the L2 module; the first message is an interactive message passed between the L1 module and the L2 module;

and after determining that the first message contains target air interface data based on the message type, analyzing the first message to acquire the target air interface data.

2. The method for acquiring air interface data according to claim 1, wherein after receiving the first message sent by the L1 module or the L2 module, the method further includes:

forward the first message received from the L2 module to the L1 module; or

Forward the first message received from the L1 module to the L2 module.

3. The method for acquiring air interface data according to claim 1, wherein after the target air interface data is acquired, the method further comprises:

and sending the target air interface data to a data processing system so that the data processing system can perform data association and information extraction on the target air interface data.

4. The method for acquiring air interface data according to claim 1, wherein the establishing communication connections with the L1 module and the L2 module respectively includes:

and establishing communication connection with the L1 module and the L2 module respectively based on the same interface communication mode.

5. The method for acquiring air interface data according to claim 4, wherein the interface communication mode is a shared memory interface communication mode;

the receiving the first message sent by the L1 module or the L2 module comprises:

receiving data address information sent by the L1 module or the L2 module through an operating system kernel; the data address information is used for indicating the address of the first message in a shared memory;

and reading the first message from the shared memory based on the data address information.

6. The method for acquiring air interface data according to claim 4, wherein the interface communication mode is a User Datagram Protocol (UDP) interface communication mode;

the receiving the first message sent by the L1 module or the L2 module comprises:

receiving the first message sent by the L1 module or the L2 module at an address of a receive socket; the receiving sockets comprise a first receiving socket and a second receiving socket, the first receiving socket is used for receiving the message sent by the L1 module, and the second receiving socket is used for receiving the message sent by the L2 module.

7. The method according to claim 1, wherein the target air interface data includes at least one of:

data content transmitted by an uplink and downlink data channel;

the size of uplink and downlink transmission data blocks;

allocating PRB (physical resource block) results of time-frequency resources of uplink and downlink channels;

uplink and downlink data transmission mode, multiple input multiple output, MIMO, beam and power information;

an uplink and downlink transmission modulation coding mode;

transmitting results of uplink and downlink data;

downlink Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI) or Rank Indicator (RI) information fed back by User Equipment (UE);

an L1 module measures the signal to interference plus noise ratio SINR of the uplink channel or the TA result;

configuring, decoding and measuring results of a Physical Random Access Channel (PRACH), a Physical Uplink Control Channel (PUCCH) or a channel Sounding Reference Signal (SRS) channel;

the transmission content of a physical broadcast channel PBCH or a physical downlink control channel PDCCH;

and configuring a demodulation reference signal (DMRS) or a channel state information reference signal (CSI-RS) reference signal.

8. An apparatus for acquiring air interface data, where the apparatus is applied to a proxy module in a baseband processing unit BBU, and the proxy module is disposed between an L1 module and an L2 module in the BBU, and establishes communication connections with the L1 module and the L2 module, respectively, and the apparatus includes:

the interface module is used for receiving a first message sent by the L1 module or the L2 module; the first message is an interactive message transferred between the L1 module and the L2 module;

and the data analysis module is used for analyzing the first message to acquire the target air interface data after determining that the first message contains the target air interface data based on the message type.

9. A baseband processing unit (BBU), comprising:

the system comprises an L1 module, an L2 module and a proxy module arranged between the L1 module and the L2 module, wherein the proxy module establishes communication connection with the L1 module and the L2 module respectively;

the agent module is configured to perform the method of any of claims 1 to 7.

10. The BBU of claim 9, wherein the proxy module establishes communication connections with the L1 module and the L2 module, respectively, based on a shared memory interface communication manner;

the L1 module, the L2 module and the proxy module map the same named shared memory to the virtual address space of each process, and the proxy module establishes inter-process communication interface mapping with the L1 module and the L2 module respectively.

11. The BBU of claim 9, wherein the proxy module is to establish communication connections with the L1 module and the L2 module, respectively, based on UDP interface communication;

the proxy module is preconfigured with a first receiving socket and a second receiving socket, the first receiving socket is an opposite-end socket of the L1 module, and the second receiving socket is an opposite-end socket of the L2 module.

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