CN113115478B - Air interface data acquisition method and device and BBU - Google Patents
Air interface data acquisition method and device and BBU Download PDFInfo
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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
Technical Field
The present application relates to the field of wireless communications technologies, and in particular, to a method and an apparatus for acquiring air interface data, and a BBU.
Background
In wireless network data, the importance of baseband air interface data is particularly prominent. Air interface parameters such as throughput, resource allocation, transmission mode, channel quality, bit error rate, etc. are the basic inputs of the radio resource management algorithm. However, the acquisition of the air interface data is relatively difficult because the air interface data has a large amount of data, which generates a large amount of data every millisecond, and this puts a great pressure on the acquisition and transmission of the data.
At present, two schemes of acquiring the air interface data mainly through a drive test device and acquiring the air interface data through base station software are provided. The acquisition by the drive test equipment means that the drive test equipment is accessed to a network in a terminal form to perform various services and simultaneously acquire data, but by adopting the scheme, the drive test equipment can only acquire the data related to the equipment per se, cannot acquire the data of the whole cell, is limited by the opening degree of an interface of the drive test equipment, and generally has larger granularity of the acquired data, incomplete parameter types and incapability of customization; the acquisition through the base station software means that the L1 and L2 software modules are used as data sources, namely the L1 and L2 software modules collect and count data through code logic and write the data into files or send the data to an external module, complete air interface data can be obtained by the scheme, but the base station software code needs to be modified when new data is added every time, the stability of the software is affected, the data collection function is dispersed at each code and is difficult to maintain, and the performance of the software is affected by the acquisition through the base station software module due to the large amount of air interface data, and the real-time performance of the system is further affected.
Disclosure of Invention
In order to solve the problems in the prior art, embodiments of the present application provide a method and an apparatus for acquiring air interface data, and a BBU.
In a first aspect, an embodiment of the present application provides a method for acquiring air interface data, where the method 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, where 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.
Optionally, after the receiving the first message sent by the L1 module or the L2 module, the method further comprises:
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, after the target air interface data is acquired, the method further includes:
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.
Optionally, 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.
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 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.
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 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.
Optionally, the target air interface data includes at least one of the following:
data content transmitted by an uplink and downlink data channel;
the size of uplink and downlink transmission data blocks;
allocating a Physical Resource Block (PRB) result of uplink and downlink channel time-frequency resources;
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 and other information fed back by user equipment UE;
the L1 module measures the results of the signal to interference plus noise ratio SINR or timing advance TA of the obtained uplink channel;
configuring, decoding and measuring results of channels such as a Physical Random Access Channel (PRACH), a Physical Uplink Control Channel (PUCCH) or a channel Sounding Reference Signal (SRS);
the transmission content of channels such as a physical broadcast channel PBCH or a physical downlink control channel PDCCH;
and configuring reference signals such as a demodulation reference signal DMRS or a channel state information reference signal CSI-RS.
In a second aspect, an embodiment of the present application further provides 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 is respectively in communication connection with the L1 module and the L2 module, 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 passed between the L1 module and the L2 module;
and the data analysis module is used for analyzing the first message after determining that the first message contains target air interface data based on the message type, and acquiring the target air interface data.
In a third aspect, an embodiment of the present application further provides a baseband processing unit BBU, including:
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 proxy module is configured to execute the steps of the method for acquiring air interface data according to the first aspect.
Optionally, 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.
Optionally, the proxy module establishes communication connections with the L1 module and the L2 module, respectively, based on a UDP interface communication manner;
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.
According to the method and device for acquiring air interface data and the BBU provided by the embodiment of the application, the proxy module is arranged between the L1 module and the L2 module in the BBU, and the proxy module can receive the interactive message transmitted between the L1 module and the L2 module and acquire the target air interface data from the interactive message, so that 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 performance of the base station is avoided.
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In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following descriptions are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of the collection of data by an L2 software module provided in the prior art;
fig. 2 is a schematic flowchart of a method for acquiring air interface data according to an embodiment of the present application;
FIG. 3 is a block diagram of a BBU architecture and an external data processing system provided by an embodiment of the present application;
fig. 4 is a second flowchart of a method for acquiring air interface data according to an embodiment of the present application;
FIG. 5 is a diagram illustrating a communication method of a shared memory interface provided in the prior art;
fig. 6 is one implementation schematic diagram of a method for acquiring air interface data according to an embodiment of the present application;
fig. 7 is a schematic diagram of a UDP interface communication method provided by the prior art;
fig. 8 is a second implementation schematic diagram of a method for acquiring air interface data according to the embodiment of the present application;
fig. 9 is a schematic structural diagram of an apparatus for acquiring air interface data according to an embodiment of the present application.
Detailed Description
In the embodiment of the present application, the term "and/or" describes an association relationship of associated objects, and indicates that three relationships may exist, for example, a and/or B, and may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.
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, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Conventionally, air interface data of a radio access network has important significance for protocol alignment between devices, performance analysis of a network system level, network specification and network optimization and the like. With the rapid deployment of the 5G network, the demand of intelligent management and control and optimization of the network by using advanced technologies such as artificial intelligence and big data is stronger. The artificial intelligence technology utilizes massive historical data to carry out model training, and obtains real-time or near-real-time control instructions through deduction of network real-time data to dynamically control the network. In the process of network intelligent control, whether training or derivation, high-quality wireless network data is required to be driven.
Alliances such as an Open-Radio Access Network (O-RAN) introduce an Open Radio Access Network architecture, and take a wireless intelligent control function as an important component. Under the framework, the intelligent control algorithm can be deployed in a network as a third-party application. The introduction of third-party ecology entails the need for data diversification. The diversity is not only reflected in the variety of parameters, but also includes the diversity of statistical, computational and correlation methods.
In a traditional access network, a network management system obtains network data by reporting some predefined statistical parameters through a base station. The meaning and the format of the data are relatively fixed and cannot be dynamically added; the reporting period is long, for example, one reporting is carried out within 15 minutes, and the real-time performance of data is poor. Because the data are statistical values, the data granularity is large, and the situation of rapid change of the network cannot be reflected. Obviously, the traditional network data cannot meet the requirement of intelligent management and control of the open wireless network. Obtaining real-time, fine-grained, multi-dimensional network data becomes a new challenge for 5G networks.
Although complete air interface data can be obtained from a baseband software module in a base station, due to the tight coupling of the data collection function and the code logic of the L1 software module and the L2 software module, the software code of the base station needs to be modified when new data is added every time, and the stability of software is influenced; and the data collection function is scattered at each position of the code and is difficult to maintain, fig. 1 is a schematic diagram of data collection of an L2 software module provided by the prior art, and as shown in fig. 1, the processing of transmission parameters, bit error rate and channel quality is scattered in different sub-modules, so that the participation of a plurality of sub-modules is required for data collection in an L2 software module, and the maintenance difficulty is high; in addition, because the data volume of the air interface is large, the performance of software can be influenced by using a base station software module for acquisition, and the real-time performance of the system is further influenced; in addition, because the base station software of each manufacturer is different, a universal third-party data acquisition scheme cannot be provided at present.
In order to solve the above problem, embodiments of the present application provide a solution, where an intermediate proxy software module independent of base station protocol stack software is used to analyze interface messages of an L1 software module and an L2 software module, so as to obtain original air interface data; and an external data processing system is used for post-processing the original data to provide various information meeting the requirements of users. The implementation of the scheme reduces the coupling degree of a data acquisition function and base station protocol software, and can acquire complete air interface data on the premise of not modifying the logic of the base station software, thereby avoiding the influence on the stability and performance of the base station and providing possibility for a third party to provide a data acquisition scheme which is independent of the base station software.
Fig. 2 is a flowchart illustrating a method for acquiring air interface data according to an embodiment of the present application, where the method 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 an L1 module and an L2 module, as shown in fig. 2, the method includes the following steps:
200, 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;
specifically, in order to collect complete air interface data without modifying the logic of the Base station software, so as to avoid the influence on the stability and performance of the Base station, in this embodiment of the application, a proxy software module (i.e., a proxy module) is added on the basis of an original software module of a Base Band Unit (BBU), and is responsible for data collection, and the proxy module is disposed between the L1 and the L2 module and establishes communication connections with the L1 and the L2 module, respectively.
When the L1 module needs to deliver the interactive message to the L2 module or the L2 module needs to deliver the interactive message to the L1 module, the interactive message may be sent to the proxy module, so that the proxy module may receive the interactive message and obtain the required air interface data from the interactive message. It can be understood that the interactive messages transmitted between the L1 module and the L2 module include various baseband air interface data, and complete air interface data can be obtained by receiving and parsing the interactive messages.
Specifically, after receiving the interactive messages transmitted between the L1 module and the L2 module, the proxy module may determine whether the received interactive messages are useful messages or useless messages according to the message types of the interactive messages, so as to determine whether the interactive messages need to be analyzed, and extract target air interface data. The useful message type refers to a preset message type which needs to be analyzed, and the message type usually comprises air interface data which needs to be collected, namely target air interface data; the useless message type refers to other message types except the useful message type, and the message type usually does not contain air interface data required to be collected.
It should be noted that the useful message type and the useless message type may be adjusted according to the need of actual data collection, for example, when data in all interactive messages needs to be collected, all message types may be set as useful message types, and when only some interested air interface data needs to be collected, only the message types that may contain the air interface data may be set as useful message types.
If the message is determined to be a useful message type according to the type of the received interactive message, it indicates that the message contains air interface data required to be collected and is a message requiring data extraction, and the agent module can analyze the message to acquire target air interface data from the message. For example, the L2 module may obtain the time-frequency resource position, modulation mode, data block size, transmission mode, and other data information of the transmission in the downlink data transmission configuration message of a certain time slot sent by the L1 module. The time granularity of the acquired target air interface data may be in units of time slots, and the proxy module may identify the data according to a frame number, a time slot number, an RNTI (Radio Network Temporary Identifier), and the like after extracting the data.
Optionally, the target air interface data includes at least one of the following:
(1) data content transmitted by an uplink and downlink data channel;
(2) the size of uplink and downlink transmission data blocks;
(3) allocating physical Resource blocks PRB (physical Resource Block) 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) an uplink and downlink transmission modulation coding mode;
(6) transmitting results of uplink and downlink data;
(7) a downlink Channel Quality Indicator (CQI), (channel Quality indicator), a Precoding Matrix Indicator (PMI), (precoding Matrix indicator) or a Rank Indicator (RI), (rank indicator) fed back by a User Equipment (UE);
(8) the L1 module measures the signal to Interference plus Noise ratio sinr (signal to Interference plus Noise ratio) or timing advance ta (timing advance) of the uplink channel;
(9) the configuration, decoding and measurement results of physical Random Access channel (prach), physical Uplink Control channel (pucch), or channel sounding Reference signal (srs), and other channels;
(10) transmission contents of channels such as a physical Broadcast channel pbch (physical Broadcast channel) or a physical Downlink Control channel pdcch (physical Downlink Control channel);
(11) reference Signal configuration 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-mentioned target air interface data is only a part, but not all, listed in this embodiment, and according to an actual application scenario, the air interface data understood by a person skilled in the art may be the target air interface data described in this embodiment.
According to the method for acquiring the air interface data provided by the embodiment of the application, the proxy module is arranged between the L1 module and the L2 module in the BBU, and the proxy module can receive the interactive message transmitted between the L1 module and the L2 module and acquire the target air interface data from the interactive message, so that 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 performance of the base station is avoided.
Optionally, 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
The first message received from the L1 module is forwarded to the L2 module.
Specifically, in this embodiment of the present application, a direct interface connection is no longer established between the L1 module and the L2 module, and an interactive message transmitted between the L1 module and the L2 module may be forwarded through the proxy module, so that normal message transmission may be performed between the L1 module and the L2 module, and an influence on an original function of the base station is avoided.
Optionally, after the target air interface data is obtained, the method further includes:
and sending 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.
Specifically, in this embodiment of the application, after the proxy module acquires the target air interface data, the target air interface data may be sent to a data processing system deployed outside, and depending on a requirement on data real-time performance, data sending may be performed in real time, or may be sent in batch after a certain amount of data is collected, or may be set to be sent periodically.
The externally deployed data processing system may 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 at different time slots and performed in association with the same transmitted target air interface data. Different information of the same transmission may be dispersed in different original data, for example, one downlink transmission and result feedback occur in different time slots, so that transmission parameter data and result data are generated at different times and come from different messages.
The information extraction can be to perform induction statistics of different time dimensions on the data according to the requirements of data users, and extract different types of information. For example, when the user needs the correlation between the bit error rate and the interference, the system may perform statistics of the bit error rate and the average signal-to-noise ratio on the original transmission result data and the interference measurement data according to the time granularity of second, so that the user can determine the correlation degree between the two according to the change rule of the extracted data.
According to the method for acquiring air interface data provided by the embodiment of the application, after the proxy module acquires the target air interface data, the target air interface data can be sent to an externally deployed data processing system for post-processing, so that various statistical information can be flexibly extracted on the basis of the originally acquired air interface data, and various changing requirements can be met.
Optionally, 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.
Specifically, in this embodiment of the application, the proxy module may respectively establish a communication connection with the L1 module and the L2 module based on the same interface communication mode, for example, a shared memory interface communication mode or a UDP (User data program, User Datagram Protocol) interface communication mode, and the like, which is not specifically limited herein, and may be selected according to an actual application scenario, as long as the same interface communication mode as that between the original L1 module and the L2 module is adopted, for example, a communication connection established by the shared memory interface communication mode is adopted between the L1 module and the L2 module in the original BBU, the proxy module may respectively establish a communication connection with the L1 module and the L2 module based on the shared memory interface communication mode, so that the addition of the proxy module is transparent to the L1 module and the L2 module, and avoids affecting the original functions of the L1 module and the L2 module.
Fig. 3 is a schematic structural diagram of a BBU architecture and an external data processing system provided in the embodiment of the present application, and as shown in fig. 3, in the embodiment, a proxy software module is added on the basis of an original software module of a BBU to be responsible for data collection; the externally deployed data processing system is responsible for the reception and post-processing of data.
In this architecture, the L1 module and the L2 module no longer establish a direct interface connection. The agent module acts between the L1 module and the L2 module and establishes interface connection with the L1 module and the L2 module respectively; the same interface communication mode between the original L1 module and the L2 module is adopted between the L1 module and the proxy module and between the L2 module and the proxy module. The addition of the proxy module is therefore transparent to the L1 module and the L2 module. The interactive messages between the L1 module and the L2 module are forwarded through the proxy module.
Fig. 4 is a flowchart illustrating a method for acquiring air interface data according to an embodiment of the present application, where as shown in fig. 4, the method includes the following steps:
and step 400, interface message analysis.
After receiving the interface message sent by the L1 or L2 module, the proxy module forwards the message, analyzes the message, and determines whether the message type is a message type containing valid data information (i.e., air interface data information that needs to be collected).
If the L1 and L2 modules use a standard Interface message format, such as a FAPI (Functional Application Platform Interface) Interface, the proxy module may parse according to the standard format. If the L1 and L2 modules use custom interface message formats, the agent module parses according to the custom format.
And step 401, extracting original data.
The proxy module retrieves useful raw data from the interface message. For example, the L2 module may obtain information about the location of the time-frequency resource, the modulation scheme, the size of the data block, the transmission mode, and the like of the transmission in a downlink data transmission configuration message of a certain time slot sent by the L1 module. The time granularity of the raw data is typically in time slots. After extracting the data, the agent module can identify the data according to the frame number, the time slot number, the RNTI and the like.
Messages passed between the L1 module and the L2 module contain slot data for each slot, including:
(1) data content transmitted by an uplink and downlink data channel;
(2) the size of uplink and downlink transmission data blocks;
(3) allocating results of PRB (physical resource block) of uplink and downlink channel time frequency resources;
(4) uplink and downlink data transmission mode, MIMO, beam and power information;
(5) an uplink and downlink transmission modulation coding mode;
(6) transmitting results of uplink and downlink data;
(7) downlink channel CQI, PMI or RI information fed back by UE;
(8) an L1 module measures the obtained results of SINR or TA and the like of the uplink channel;
(9) configuring, decoding and measuring results of channels such as PRACH, PUCCH or SRS and the like;
(10) transmission contents of channels such as PBCH or PDCCH;
(11) and configuring reference signals such as DMRS or CSI-RS.
In addition, decoding a MAC (Medium Access Control) PDU (Protocol Data Unit) transmitted between the L1 module and the L2 module can also obtain air interface Data information of an RRC (Radio Resource Control) layer.
And step 402, data transmission.
The agent module sends the collected raw data to the data processing system. Depending on the real-time requirement of the data, the data transmission can be carried out in real time, or can be carried out in batch after a certain amount of data is collected.
And step 403, receiving data.
The data processing system receives the raw data and stores the data.
And step 404, associating data.
Different information of the same transmission may be dispersed in different raw data. For example, a downlink transmission and result feedback occur in different time slots, so that the transmission parameter data and result data are generated at different times and originate from different messages. To facilitate information extraction, the data processing system needs to correlate the data and establish a mapping of transmission parameters and results.
The data processing system conducts induction statistics of different time dimensions on data according to the requirements of data users, and extracts different types of information. For example, when the user needs the correlation between the bit error rate and the interference, the system may perform statistics of the bit error rate and the average signal-to-noise ratio on the raw transmission result data and the interference measurement data at a time granularity of seconds. And the user judges the association degree of the extracted data according to the change rule of the extracted data.
Compared with the existing air interface data acquisition scheme, the 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 the requirements of various changes;
(3) the data collection function is decoupled with the baseband software module, and the data collection can be completed without modifying software codes of the L1 and L2 modules, so that the collection difficulty is reduced, and the influence on the stability of the base station is also reduced;
(4) the data acquisition and processing function can be provided by a third party, so that the unification of data formats is realized;
(5) the collection and processing of data does not occupy the processing resources of the L1 and L2 modules, and therefore has little impact on the performance of the base station.
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:
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 the shared memory;
and reading the first message from the shared memory based on the data address information.
Specifically, the interface communication modes of different base station L1 and L2 modules are different, and the agent module needs to be adapted according to the specific communication mode. In this embodiment, the proxy module may establish communication connections with the L1 module and the L2 module respectively based on a shared memory interface communication manner, including: the L1 module, the L2 module and the agent module map the same named shared memory address to respective process virtual address spaces; the proxy module establishes an inter-process communication interface mapping with the L1 module and the L2 module, respectively.
When the L1 module needs to transmit an interactive message to the L2 module or the L2 module needs to transmit an interactive message to the L1 module, the L1 module or the L2 module may first write the interactive message into the shared memory through a virtual address, and send data address information of the interactive message in the shared memory to the proxy module through the kernel of the operating system, so that the proxy module may read the interactive message from the shared memory according to the data address information after receiving the data address information, and acquire target air interface data from the interactive message after determining that the interactive message includes the target air interface data.
Fig. 5 is a schematic diagram of a shared memory interface communication method provided in the prior art, and as shown in fig. 5, a process of sending and receiving messages between an L1 module and an L2 module includes the following steps:
the block 500, L1, and L2 modules map the same named shared memory to respective virtual address spaces.
Step 501, module L1 and module L2 establish inter-process communication interface mapping by means of semaphore and the like.
Fig. 6 is a schematic implementation diagram of a method for acquiring air interface data according to an embodiment of the present application, and as shown in fig. 6, a proxy module establishes communication connections with an L1 module and an L2 module respectively based on a shared memory interface communication manner, where the method includes the following steps:
In step 603, the L2 module writes the data to the shared memory via the virtual address.
In step 607, the L1 module reads data from the shared memory according to the data address information received by the interface module.
And step 608, the agent module analyzes 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:
receiving a first message sent by the L1 module or the L2 module at the address of the receiving socket; the receiving sockets include 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.
Specifically, in this embodiment of the application, the proxy module may respectively establish communication connections with the L1 module and the L2 module based on a UDP interface communication manner, including: pre-configuring a first receiving socket and a second receiving socket, wherein 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; the peer socket address of the L1 module is configured as a first receive socket and the peer socket address of the L2 module is configured as a second receive socket.
When the L1 module needs to transfer an interactive message to the L2 module or the L2 module needs to transfer an interactive message to the L1 module, the L1 module or the L2 module may send the interactive message to the agent module through a sending socket in each module, so that the agent module may receive the interactive message at an address of the first receiving socket or the second receiving socket, and obtain target air interface data from the interactive message after determining that the interactive message includes the target air interface data.
Fig. 7 is a schematic diagram of a UDP interface communication method provided in the prior art, and as shown in fig. 7, a process of sending and receiving a message between the L1 module and the L2 module includes the following steps:
Fig. 8 is an implementation schematic diagram of an air interface data acquisition method provided in this embodiment of the present application, and as shown in fig. 8, a proxy module establishes communication connections with an L1 module and an L2 module respectively based on a UDP interface communication mode, where the method includes the following steps:
And step 803, the agent module analyzes and sends the local data.
The method and the device provided by the embodiments of the application are based on the same application concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not described again.
Fig. 9 is a schematic structural diagram of an apparatus for acquiring air interface data according to an embodiment of the present application, 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 an L1 module and an L2 module, as shown in fig. 9, the apparatus includes:
the interface module 900 is 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;
the data parsing module 910 is configured to, after determining that the first message includes the target air interface data based on the message type, parse the first message 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 apparatus further comprises:
the data transmission module 920 is configured to send target air interface data to the data processing system, so that the data processing system performs data association and information extraction on the target air interface data.
Optionally, the interface module 900 is further configured to: based on the same interface communication mode, 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 interface module 900 is configured to: 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 the shared memory; and reading the first message 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 interface module 900 is configured to: receiving a first message sent by the L1 module or the L2 module at the address of the receiving socket; the receiving sockets include 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 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; the user equipment UE feeds back information such as a downlink channel quality indicator CQI, a precoding matrix indicator PMI or a rank indicator RI; the L1 module measures the results of the signal to interference plus noise ratio SINR or timing advance TA of the obtained uplink channel; configuring, decoding and measuring results of channels such as a Physical Random Access Channel (PRACH), a Physical Uplink Control Channel (PUCCH) or a channel Sounding Reference Signal (SRS); the transmission content of channels such as a physical broadcast channel PBCH or a physical downlink control channel PDCCH; and configuring reference signals such as a demodulation reference signal (DMRS) or a channel state information reference signal (CSI-RS).
It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation. In addition, functional modules in the embodiments of the present application may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.
The integrated module, if implemented as a software functional module and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solutions of the present application, which are essential or contributing to the prior art, or all or part of the technical solutions may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
It should be noted that the apparatus provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment and achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.
On the other hand, an embodiment of the present application further provides a baseband processing unit BBU, including: the system comprises an L1 module, an L2 module and a proxy module arranged between an L1 module and an L2 module, wherein the proxy module is in communication connection with an L1 module and an L2 module respectively; the agent module is configured to perform any of the methods provided in the foregoing embodiments, for example: 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.
Optionally, the agent 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 their respective processes, and the proxy module establishes inter-process communication interface mapping with the L1 module and the L2 module, respectively.
Optionally, the proxy module establishes communication connections with the L1 module and the L2 module respectively based on a UDP interface communication manner; the agent module is pre-configured with a first receive socket and a second receive socket, the first receive socket being the opposite socket of the L1 module, and the second receive socket being the opposite socket of the L2 module.
It should be noted that, the BBU provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are not repeated herein.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such 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 intended to include such modifications and variations as well.
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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