CN113037428A - Data flow processing method and device - Google Patents
Data flow processing method and device Download PDFInfo
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- CN113037428A CN113037428A CN201911252253.7A CN201911252253A CN113037428A CN 113037428 A CN113037428 A CN 113037428A CN 201911252253 A CN201911252253 A CN 201911252253A CN 113037428 A CN113037428 A CN 113037428A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
- H04L1/0083—Formatting with frames or packets; Protocol or part of protocol for error control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1806—Go-back-N protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/04—Error control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
- H04W28/065—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information using assembly or disassembly of packets
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Abstract
The invention provides a method and a device for processing a data flow. The method comprises the following steps: when a path module receives TDD wireless frame data, determining reset time corresponding to the TDD wireless frame data according to the data type of the TDD wireless frame data; the subframe of the TDD wireless frame data at the reset moment is an invalid subframe; when the access module receives the subframe of the reset moment in the TDD wireless frame data, executing reset operation on the access module according to a preset reset signal; and after the execution of the reset operation is finished, receiving and processing the subframe positioned in the TDD wireless frame data after the reset moment based on a reset access module. The invention can effectively avoid the problems of downlink overpower, uplink background noise and the like caused by factors such as compression, package, unpacking, decompression and the like, and improves the stability of the system.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for processing a data flow.
Background
In a novel TDD (Time Division duplex) Time Division transmission system of a BBU (Building Base band Unit) Base station, in order to save optical fiber resources, a frequency domain compression algorithm is used, and a new data transmission scheme from an uplink path to an uplink path and a downlink path to an AAU (Active Antenna Unit) is constructed around the frequency domain compression algorithm.
In the 10ms radio frame structure of TDD time division transmission, as shown in fig. 1, D represents downlink, U represents uplink, and the data direction is from the base station to the AAU.
In the existing design, a downlink data processing flow and an uplink processing flow of a base station are shown in fig. 2 and fig. 3. As shown in fig. 2, the downlink data path portion refers to a compression module, a packet packing module, and a data format conversion module, and performs 7-bit compression on downlink data, and then packs the data according to the data format required by cpri, generates a packet header, and performs data format conversion. As shown in fig. 3, the uplink data path portion refers to uplink unpacking and packet header parsing, 6bit decompression, and data format conversion.
The current design scheme completes the basic function of data transmission and ensures normal service transmission between the BBU and the AAU, but under various long-term pressure tests of a test line and an external field, data confusion can be caused due to some unstable reasons, downlink overpower or uplink background noise is high, so that a user cannot access the test line, and once the problem occurs, the recovery can be realized only by restarting the base station.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide a method and an apparatus for processing a data flow, so as to solve the technical problem in the prior art that under various long-term pressure tests in a test line and an external field, data is disturbed due to some unstable reasons, which causes high downlink overpower or uplink background noise, which causes a user to be unable to access, and once the problem occurs, only a base station is restarted to recover.
In order to solve the above technical problem, an embodiment of the present invention provides a method for processing a data flow, including:
when a path module receives TDD wireless frame data, determining reset time corresponding to the TDD wireless frame data according to the data type of the TDD wireless frame data; the subframe of the TDD wireless frame data at the reset moment is an invalid subframe;
when the access module receives the subframe of the reset moment in the TDD wireless frame data, executing reset operation on the access module according to a preset reset signal;
and after the execution of the reset operation is finished, receiving and processing the subframe positioned in the TDD wireless frame data after the reset moment based on a reset access module.
Optionally, before determining the reset time corresponding to the TDD radio frame data according to the data type of the TDD radio frame data, the method further includes:
in the transmission process of testing TDD wireless frame data, determining a test invalid subframe in the testing TDD wireless frame data according to a subframe number index of the testing TDD wireless frame data;
when the access module receives the test invalid subframe, recording the test reset time corresponding to the test invalid subframe in the test TDD wireless frame data;
and generating a reset signal corresponding to the test reset moment.
Optionally, the generating a reset signal corresponding to the test reset time includes:
generating an initial reset signal when a subframe corresponding to the test invalid subframe is received;
carrying out pulse extension processing on the initial reset signal to generate a pulse extension reset signal;
according to two clock domains in a path module, splitting the pulse extension reset signal into two clock domain reset signals, and taking the two clock domain reset signals as final reset signals.
Optionally, when the data type is an uplink data type, the determining, according to the subframe number index of the test TDD radio frame data, a test invalid subframe in the test TDD radio frame data includes:
acquiring a subframe number index of the test TDD wireless frame data in the transmission process of the test TDD wireless frame data;
and regarding the sub-frame 2 of the channel module as an invalid downlink sub-frame according to the sub-frame number index.
Optionally, when the data type is a downlink data type, the determining, according to the subframe number index of the test TDD radio frame data, a test invalid subframe in the test TDD radio frame data includes:
acquiring a subframe number index of the test TDD wireless frame data in the transmission process of the test TDD wireless frame data;
and regarding the sub-frame 0 of the access module as an invalid uplink sub-frame according to the sub-frame number index.
Optionally, when the data type is a downlink data type, the executing a reset operation on the path module according to a pre-generated reset signal includes:
when the reset signal is detected, closing a switch of a data transmission enabling module;
and starting timing after the reset operation is finished, and starting the switch of the data transmission enabling module when the set time length is reached.
In order to solve the above technical problem, an embodiment of the present invention provides a data flow processing apparatus, including:
the reset time determining module is used for determining the reset time corresponding to the TDD wireless frame data according to the data type of the TDD wireless frame data when the access module receives the TDD wireless frame data; the subframe of the TDD wireless frame data at the reset moment is an invalid subframe;
a reset operation execution module, configured to execute a reset operation on the path module according to a pre-generated reset signal when the path module receives the subframe at the reset time in the TDD wireless frame data;
and the subframe processing module is used for receiving and processing the subframe positioned in the TDD wireless frame data after the reset moment based on the reset access module after the reset operation is finished.
Optionally, the method further comprises:
the invalid subframe determining module is used for determining a test invalid subframe in test TDD wireless frame data according to a subframe number index of the test TDD wireless frame data in the transmission process of the test TDD wireless frame data;
the reset moment recording module is used for recording the test reset moment corresponding to the test invalid subframe in the test TDD wireless frame data when the channel module receives the subframe corresponding to the test invalid subframe;
and the reset signal generation module is used for generating a reset signal corresponding to the test reset moment.
Optionally, the reset signal generating module includes:
the initial reset signal generation submodule is used for generating an initial reset signal when receiving the sub-frame corresponding to the test invalid sub-frame;
the extension reset signal generation submodule is used for carrying out pulse extension processing on the initial reset signal and generating a pulse extension reset signal;
and the final reset signal acquisition submodule is used for splitting the pulse extension reset signal into two clock domain reset signals according to two clock domains in the access module, and taking the two clock domain reset signals as final reset signals.
Optionally, when the data type is an uplink data type, the invalid subframe determining module includes:
the first operation position acquisition submodule is used for acquiring a subframe number index of the test TDD wireless frame data in the transmission process of the test TDD wireless frame data;
and the first invalid subframe acquisition submodule is used for regarding the subframe 2 of the access module as an invalid downlink subframe according to the subframe number index.
Optionally, when the data type is a downlink data type, the invalid subframe determining module includes:
the second operation position acquisition submodule is used for acquiring a subframe number index of the test TDD wireless frame data in the transmission process of the test TDD wireless frame data;
and the second invalid subframe acquisition submodule is used for regarding the subframe 0 of the access module as an invalid uplink subframe according to the subframe number index.
Optionally, when the data type is a downlink data type, the reset operation execution module includes:
the enabling switch closing submodule is used for closing the switch of the data transmission enabling module when the reset signal is detected;
and starting timing after the reset operation is finished, and starting the switch of the data transmission enabling module when the set time length is reached.
In order to solve the above technical problem, an embodiment of the present invention provides an electronic device, including a processor, a communication interface, a memory, and a communication bus, where the processor and the communication interface complete communication between the memory and the processor through the communication bus;
a memory for storing a computer program;
and the processor is used for realizing the data flow processing method in any one of the above modes when executing the program stored in the memory.
In order to solve the above technical problem, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements any one of the above processing methods for a data flow.
Compared with the prior art, the embodiment of the invention has the following advantages:
in the embodiment of the invention, when the path module receives Time Division Duplex (TDD) wireless frame data, the reset time corresponding to the TDD wireless frame data is determined according to the data type of the TDD wireless frame data, the data subframe of the TDD wireless frame data at the reset time is an invalid subframe, when the path module receives the subframe of the reset time in the TDD wireless frame data, the path module is reset according to a pre-generated reset signal, and after the reset operation is completed, the path module based on the reset receives and processes the subframe positioned in the TDD wireless frame data after the reset time. The embodiment of the invention enables the fault to have recoverability by increasing the cycle reset of the wireless frame data, can not influence the normal service data transmission of the uplink and the downlink, even if the current wireless frame has data confusion due to some reason, the next wireless frame can be immediately recovered due to the reset initialization, and the retransmission mechanism is provided by combining the wireless system service.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
Fig. 1 is a diagram illustrating a TDD radio frame structure in the prior art;
FIG. 2 is a schematic diagram of a BBU downstream path in the prior art;
FIG. 3 is a schematic diagram of a BBU uplink path in the prior art;
FIG. 4 is a flowchart illustrating a method for processing a data flow according to an embodiment of the present invention;
FIG. 5 is a flowchart illustrating a method for processing a data flow according to an embodiment of the present invention;
FIG. 6 is a flow chart of a context data process according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a data flow processing apparatus according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a data flow processing apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
In a novel TDD time division transmission system of a BBU base station, in order to save optical fiber resources, a frequency domain compression algorithm is used, a set of new data transmission scheme from an uplink channel to an downlink channel to an AAU is constructed around the frequency domain compression algorithm, and channel data are disordered and unrecoverable errors occur due to the external or some unstable reasons.
The invention combines the characteristic of TDD time division transmission, in the instant subsystem, the downlink is invalid data transmitted on a U subframe, the uplink is invalid data transmitted on a D frame, the reset initialization of a module can be generated at the position of transmitting the invalid data, a wireless frame of 10ms is taken as a period, code reset initialization is carried out every 10ms, because the initialization reset is introduced at the invalid time, the normal service data transmission of the uplink and the downlink cannot be influenced, even if the current wireless frame has data confusion due to some reason, the next wireless frame can be immediately recovered due to the reset initialization, and the retransmission mechanism is combined with the service of the wireless system, the method effectively avoids the problems of downlink overpower, high uplink background noise and the like caused by the factors of compression, package, unpacking, decompression and the like, and increases the stability of the system.
The following will describe the technical solution of the present invention in detail with reference to the following examples.
Example one
Referring to fig. 4, a flowchart illustrating steps of a method for processing a data flow according to an embodiment of the present invention is shown, and as shown in fig. 4, the method for processing a data flow may include the following steps:
step 101: when a path module receives TDD wireless frame data, determining reset time corresponding to the TDD wireless frame data according to the data type of the TDD wireless frame data; and the subframe of the TDD wireless frame data at the reset moment is an invalid subframe.
In the embodiment of the present invention, the TDD radio frame data refers to radio frame data with a period of 10 ms.
The data type of the TDD radio frame data may include an uplink data type and a downlink data type.
The uplink data type refers to a type of TDD radio frame data transmitted from the AAU to the base station.
The downlink data type refers to a type of TDD radio frame data transmitted from the base station to the AAU.
And when the sent TDD wireless frame data is of an uplink data type, the data corresponding to the D subframe in the TDD wireless frame data is invalid data.
And when the sent TDD wireless frame data is of a downlink data type, the data corresponding to the U subframe in the TDD wireless frame data is invalid data.
The reset time refers to a time corresponding to the transmission of an invalid data subframe during the transmission of one TDD radio frame data.
When TDD radio frame data is transmitted, one frame of TDD radio frame data is transmitted every 10ms, and then for multiple frames of TDD radio frame data, after the reset time is determined, the time for resetting each frame is the same, for example, when a first frame of TDD radio frame data is transmitted, the reset time is the 5 th ms of the first frame of TDD radio frame data, and when a second frame of TDD radio frame data is transmitted, the time for transmitting the second frame of TDD radio frame data is also the 5 th ms of the second frame of TDD radio frame data.
It can be known that the subframe of the TDD radio frame data at the reset time is an invalid subframe.
It should be understood that the above examples are only examples for better understanding of the technical solutions of the embodiments of the present invention, and are not to be taken as the only limitation of the embodiments of the present invention.
When the access module receives TDD wireless frame data, the reset time corresponding to the TDD wireless frame data is determined according to the data type of the TDD wireless frame data, and the reset time is different if the data type is different, namely, the uplink data and the downlink data correspond to the respective reset time.
After determining the reset time corresponding to the TDD radio frame data according to the data type of the TDD radio frame data, execute step 102.
Step 102: and when the access module receives the subframe of the reset moment in the TDD wireless frame data, executing reset operation on the access module according to a preset reset signal.
The reset signal is a signal for initializing the pass module. For example, referring to fig. 6, which shows a flowchart of up-down data processing according to an embodiment of the present invention, as shown in fig. 6, the path module of the downlink data includes a data transmission enabling module, a compression module, a group packet module, and a data format conversion module, and then the reset signal may initialize the data transmission enabling module, the compression module, the group packet module, and the data format conversion module. The uplink data path module comprises an unpacking module, a decompressing module and a data format conversion module, and the reset signal can initialize the unpacking module, the decompressing module and the data format conversion module.
It should be understood that the above examples are only examples for better understanding of the technical solutions of the embodiments of the present invention, and are not to be taken as the only limitation of the embodiments of the present invention.
The reset operation is initialization operation, and the function is mainly to initialize the program state machine to 0000H, make the single chip microcomputer start to execute the program from the 0000H unit, and assign some specific value tables to the special function registers. Reset is the first operation to power up and then the program starts executing from 0000H. In operation, the program of the single chip microcomputer may be trapped in a dead loop state due to factors such as external interference, and the single chip microcomputer is only reset to be restarted in order to enter a normal state.
When the path module receives the subframe at the reset time in the TDD wireless frame data, that is, when the reset time is reached, the path module may be reset according to a pre-generated reset signal.
After the reset operation is performed on the pass module according to the reset signal generated in advance, step 103 is performed.
Step 103: and after the execution of the reset operation is finished, receiving and processing the subframe positioned in the TDD wireless frame data after the reset moment based on a reset access module.
After the reset operation is completed, that is, after the path module is initialized, the subframe after the reset time in the TDD radio frame data may be received and processed based on the reset path module.
The invention takes a 10ms wireless frame as a period, code reset initialization is carried out every 10ms, because the initialization reset is introduced at the invalid time, normal service data transmission of uplink and downlink cannot be influenced, and even if the current wireless frame has data confusion due to some reason, the next wireless frame can be immediately recovered due to the reset initialization.
According to the method for processing the data flow provided by the embodiment of the invention, when the path module receives Time Division Duplex (TDD) wireless frame data, the reset time corresponding to the TDD wireless frame data is determined according to the data type of the TDD wireless frame data, the subframe of the TDD wireless frame data at the reset time is an invalid subframe, when the path module receives the subframe of the reset time in the TDD wireless frame data, the path module is reset according to a preset reset signal, and after the reset operation is completed, the subframe located after the reset time in the TDD wireless frame data is received and processed based on the reset path module. The embodiment of the invention enables the fault to have recoverability by increasing the cycle reset of the wireless frame data, can not influence the normal service data transmission of the uplink and the downlink, even if the current wireless frame has data confusion due to some reason, the next wireless frame can be immediately recovered due to the reset initialization, and the retransmission mechanism is provided by combining the wireless system service.
Example two
Referring to fig. 5, a flowchart illustrating steps of a method for processing a data flow according to an embodiment of the present invention is shown, and as shown in fig. 5, the method for processing a data flow may include the following steps:
step 201: and in the transmission process of the test TDD wireless frame data, determining a test invalid subframe in the test TDD wireless frame data according to the subframe number index of the test TDD wireless frame data.
In the embodiment of the present invention, the test TDD radio frame data refers to radio frame data of a 10ms period, and is used to determine TDD radio frame data at a reset time.
The data type of the TDD radio frame data may include an uplink data type and a downlink data type.
The uplink data type refers to a type of TDD radio frame data transmitted from the AAU to the base station.
The downlink data type refers to a type of TDD radio frame data transmitted from the base station to the AAU.
And when the sent TDD wireless frame data is of an uplink data type, the data corresponding to the D subframe in the TDD wireless frame data is invalid data.
And when the sent TDD wireless frame data is of a downlink data type, the data corresponding to the U subframe in the TDD wireless frame data is invalid data.
The test invalid subframe refers to an invalid subframe in the test TDD radio frame data.
In the transmission process of testing TDD wireless frame data, determining a test invalid subframe in the test TDD wireless frame data according to the data type of the test TDD wireless frame data, for example, when the data type of the test TDD wireless frame data is a downlink data type, the test invalid subframe is a U subframe in the test TDD wireless frame data; and when the data type of the test TDD wireless frame data is the uplink data type, the test invalid subframe is the D subframe in the test TDD wireless frame data.
After determining the test invalid subframe in the test TDD radio frame data, step 202 is performed.
Step 202: and when the access module receives the test invalid subframe, recording the test reset time corresponding to the test invalid subframe in the test TDD wireless frame data.
The test reset time refers to the time corresponding to the test invalid subframe transmission in the process of transmitting one test TDD wireless frame data.
When the test TDD wireless frame data is transmitted, one frame of TDD wireless frame data is transmitted every 10ms, and then for the multi-frame test TDD wireless frame data, after the test reset time is determined, the reset time of each frame is the same, for example, when the first frame of test TDD wireless frame data is transmitted, the test reset time is the 5 th ms of the first frame of test TDD wireless frame data, and then when the second frame of test TDD wireless frame data is transmitted, the time of transmitting the second frame of test TDD wireless frame data is also the 5 th ms of the second frame of test TDD wireless frame data.
It can be known that the subframe of the test TDD radio frame data at the test reset time is a test invalid subframe.
It should be understood that the above examples are only examples for better understanding of the technical solutions of the embodiments of the present invention, and are not to be taken as the only limitation of the embodiments of the present invention.
When the access module receives the test invalid subframe for testing the TDD radio frame data, it may record the test reset time corresponding to the test invalid subframe in the test TDD radio frame data, and specifically, perform position retrieval according to the subframe number, slot number, symbol, and PRB number provided by the data processing module, and may perform detailed description on the process of determining the test invalid subframe by combining the following preferred embodiments.
For the upstream data type, the following description is made in connection with the first preferred embodiment.
In a preferred embodiment of the present invention, the step 202 may include:
substep A1: and acquiring the subframe number index of the test TDD wireless frame data in the transmission process of the test TDD wireless frame data.
In the embodiment of the present invention, during testing the transmission process of the TDD wireless frame data, position retrieval may be performed according to a subframe number, a slot number, a symbol, and a PRB (Physical Resource Block) number provided by the data processing module, so as to obtain a subframe number index.
After obtaining the subframe number index of the test TDD radio frame data, sub-step a2 is performed.
Substep A2: and according to the subframe number index, regarding a subframe 2 area of the access module as an invalid downlink subframe.
After obtaining the subframe number index of the test TDD radio frame data, subframe 2 of the pass module may be considered as an invalid downlink subframe.
For the downstream data type, the following description is made in connection with the second preferred embodiment.
In another preferred embodiment of the present invention, the step 202 may include:
substep B1: and acquiring the subframe number index of the test TDD wireless frame data in the transmission process of the test TDD wireless frame data.
In the embodiment of the invention, in the process of testing the transmission of the TDD wireless frame data, the position retrieval can be carried out according to the subframe number, the time slot number, the symbol and the PRB number provided by the data processing module so as to obtain the subframe number index.
After obtaining the subframe number index of the test TDD radio frame data, sub-step B2 is performed.
Substep B2: and regarding the sub-frame 0 of the channel module as an invalid U sub-frame according to the sub-frame number index.
After obtaining the subframe number index of the test TDD radio frame data, subframe 0 of the pass module may be considered as an invalid uplink subframe.
After recording the test reset time corresponding to the test invalid subframe in the test TDD radio frame data, step 203 is executed.
Step 203: and generating a reset signal corresponding to the test reset moment.
After the reset time corresponding to the test invalid subframe in the test TDD wireless frame data is recorded, a corresponding reset signal may be generated at the test reset time, and the reset signal may initialize the access module. The generation process of the reset signal can be described in detail in connection with the preferred embodiments described below.
In a preferred embodiment of the present invention, the step 203 may include:
substep C1: and generating an initial reset signal when the sub-frame corresponding to the test invalid sub-frame is received.
In the embodiment of the present invention, the initial reset signal refers to a reset signal generated in advance in the pass module, that is, corresponding to the entire pass module.
When the pass module receives the subframe corresponding to the invalid subframe, an initial reset signal corresponding to the pass module may be generated, and then sub-step C2 is performed.
Substep C2: and carrying out pulse extension processing on the initial reset signal to generate a pulse extension reset signal.
After the initial reset signal is generated, the reset signals of up and down rows can be generated respectively at the test reset moment, and the pulse length extension is performed on the initial reset signal, so that the pulse extension reset signal can be generated.
After the pulse-spread reset signal is generated, sub-step C3 is performed.
Substep C3: according to two clock domains in a path module, splitting the pulse extension reset signal into two clock domain reset signals, and taking the two clock domain reset signals as final reset signals.
After the pulse extension reset signal is generated, the pulse extension reset signal can be subjected to line synchronization processing, and since the channel module has both 368.64Mhz clock domain and 491.52Mhz clock domain, the pulse extension reset signal needs to be subjected to synchronization processing to generate reset signals under 2 clock domains, so that asynchronous reset synchronous release of each register is ensured.
After the reset signal is generated, step 204 is performed.
Step 204: when a path module receives TDD wireless frame data, determining reset time corresponding to the TDD wireless frame data according to the data type of the TDD wireless frame data; and the subframe of the TDD wireless frame data at the reset moment is an invalid subframe.
TDD radio frame data refers to radio frame data of a 10ms period
When TDD radio frame data is transmitted, one frame of TDD radio frame data is transmitted every 10ms, and then for multiple frames of TDD radio frame data, after the reset time is determined, the time for resetting each frame is the same, for example, when a first frame of TDD radio frame data is transmitted, the reset time is the 5 th ms of the first frame of TDD radio frame data, and when a second frame of TDD radio frame data is transmitted, the time for transmitting the second frame of TDD radio frame data is also the 5 th ms of the second frame of TDD radio frame data.
It can be known that the data subframe of the TDD radio frame data at the reset time is an invalid subframe.
It should be understood that the above examples are only examples for better understanding of the technical solutions of the embodiments of the present invention, and are not to be taken as the only limitation of the embodiments of the present invention.
When the access module receives TDD wireless frame data, the reset time corresponding to the TDD wireless frame data is determined according to the data type of the TDD wireless frame data, and the reset time is different if the data type is different, namely, the uplink data and the downlink data correspond to the respective reset time.
It is understood that the invalid subframe in the TDD radio frame data and the test invalid subframe in the test TDD radio frame data are two same subframes, for example, when the invalid subframe in the TDD radio frame data is subframe 0 in the TDD radio frame data, the test invalid subframe in the test TDD radio frame data is subframe 0 in the test TDD radio frame data. In the embodiment of the invention, in order to distinguish the invalid subframe in the TDD wireless frame data from the test invalid subframe in the test TDD wireless frame data, the invalid subframes are distinguished and named.
The reset time is the time corresponding to the invalid subframe in the transmission process of the TDD wireless frame data, and the test reset time is the time corresponding to the test invalid subframe in the transmission process of the test TDD wireless frame data, so that in the transmission process of the TDD wireless frame data and the test TDD wireless frame data, the reset time and the test reset time are the same, and in the embodiment of the invention, in order to distinguish the reset time in the TDD wireless frame data and the test reset time in the test TDD wireless frame data, the invention is specially named.
After determining the reset time corresponding to the TDD radio frame data according to the data type of the TDD radio frame data, step 205 is executed.
Step 205: and when the access module receives the subframe of the reset moment in the TDD wireless frame data, executing reset operation on the access module according to a preset reset signal.
The reset signal is a signal for initializing the pass module.
It should be understood that the above examples are only examples for better understanding of the technical solutions of the embodiments of the present invention, and are not to be taken as the only limitation of the embodiments of the present invention.
The reset operation is an initialization operation, and the function of the reset operation is mainly to initialize a program counter to 0000H, enable the single chip microcomputer to start executing programs from a 0000H unit and assign special function registers to specific value tables. Reset is the first operation to power up and then the program starts executing from 0000H. In operation, the program of the single chip microcomputer may be trapped in a dead loop state due to factors such as external interference, and the single chip microcomputer is only reset to be restarted in order to enter a normal state.
When the path module receives the subframe of the TDD wireless frame data at the reset time, that is, the reset time is reached, the path module may be reset according to a reset signal generated at the reset time in advance.
When the data type of the TDD wireless frame data is a downlink data type, the switch of the data transmission enabling module needs to be turned off in advance, and specifically, the following detailed description is made in conjunction with the following preferred embodiments.
In a preferred embodiment of the present invention, the step 205 may include:
substep D1: and when the reset signal is detected, closing a switch of the data transmission enabling module.
Substep D2: and starting timing after the reset operation is finished, and starting the switch of the data transmission enabling module when the set time length is reached.
In the embodiment of the present invention, when the data type of the TDD wireless frame data is a downlink data type, after the path module detects a reset signal, the switch of the data transmission enabling module may be turned off, and after the reset operation is completed and timing is started, and when a preset time length is reached, the switch of the data transmission enabling module is turned on, specifically, the switch of the data transmission enabling module is turned off to enable, and when the reset signal is detected, the path module performs an initialization operation in a unified manner, the data transmission enabling module turns off the switch, and does not transmit information and data to the backward path module any more, a time delay is performed to ensure that a certain time point (e.g., slot is 5, symbol is 7, and prb is 0) is obtained after the initialization is completed, the switch of the data transmission enabling module is enabled, and the path module acquires data and information from the DLPRO module again after the initialization, so that "cleaning" is performed on the path data every 10ms, accumulation errors are prevented and failures occur.
Step 206: and after the execution of the reset operation is finished, receiving and processing the subframe positioned in the TDD wireless frame data after the reset moment based on a reset access module.
After the reset operation is completed, that is, after the path module is initialized, the subframe after the reset time in the TDD radio frame data may be received and processed based on the reset path module.
The invention takes a 10ms wireless frame as a period, code reset initialization is carried out every 10ms, because the initialization reset is introduced at the invalid time, normal service data transmission of uplink and downlink cannot be influenced, and even if the current wireless frame has data confusion due to some reason, the next wireless frame can be immediately recovered due to the reset initialization.
Next, with reference to fig. 6, the following detailed description will be made of the technical solution of the embodiment of the present invention.
For example, referring to fig. 6, which shows a flowchart of up-down data processing according to an embodiment of the present invention, as shown in fig. 6, the path module of the downlink data includes a data transmission enabling module, a compression module, a group packet module, and a data format conversion module, and then the reset signal may initialize the data transmission enabling module, the compression module, the group packet module, and the data format conversion module. The uplink data path module comprises an unpacking module, a decompressing module and a data format conversion module, and the reset signal can initialize the unpacking module, the decompressing module and the data format conversion module.
The data processing module may receive TDD wireless frame data to be transmitted, and perform processing operations such as calibration on the received TDD wireless frame data.
And when the received TDD wireless frame data is downlink data, the data processing module transmits the processed TDD wireless frame data to the access module corresponding to the downlink data, at this time, the data enabling module in the access module is in an open state, can sequentially receive each subframe in the processed TDD wireless frame data, and after receiving each subframe, sequentially transmits the data to the compression module, the packaging module and the data format conversion module of the access module. In the process, the position of the subframe 2 in the TDD wireless frame data can be detected by an initialization reset module in the system, and when the position of the subframe 2 is detected, a pre-generated reset signal corresponding to the position of the subframe 2 can be started, and the reset signal is transmitted to a reset synchronization module, the reset synchronization module performs a reset operation on the path module according to the reset signal, specifically, the pulse extension reset signal can be split into two clock domain reset signals, namely 368CLK _ down _ rst and CLK 491 _ down _ rst, according to two clock domains in the path module, the two clock domain reset signals are sent to the path module as a final reset signal, so as to perform a reset operation on the path module according to the two clock domain reset signals, and then, after the reset operation is performed, the subframe located after the position of the subframe 2 in the TDD wireless frame data can be received and processed based on the path module that is reset, and finally to the AAU through the optical port.
And when the received TDD wireless frame data is uplink data, the TDD wireless frame data sent by the AAU can be received through the optical port, the data processing module comprises an access module, and the access module acquires the TDD wireless frame data and processes the TDD wireless frame data. Then the data processing module sends the processed TDD wireless frame data to an initialization reset module, the initialization reset module detects the position of a subframe 0 in the TDD wireless frame data, when the position of the subframe 0 is detected, a pre-generated reset signal corresponding to the position of the subframe 0 can be started, the reset signal is transmitted to a reset synchronization module, the reset synchronization module executes reset operation on a path module according to the reset signal, specifically, the pulse extension reset signal can be split into two clock domain reset signals, namely 368CLK _ down _ rst and CLK _ down _ rst, according to two clock domains in the path module, the two clock domain reset signals are sent to the path module as final reset signals, so as to reset the path module according to the two clock domain reset signals, then, after the execution of the reset operation is completed, the reset-based access module receives and processes the subframe located after the subframe 0 position in the TDD wireless frame data, and finally sends the subframe to the base station through the optical port.
According to the method for processing the data flow provided by the embodiment of the invention, when the path module receives Time Division Duplex (TDD) wireless frame data, the reset time corresponding to the TDD wireless frame data is determined according to the data type of the TDD wireless frame data, the subframe of the TDD wireless frame data at the reset time is an invalid subframe, when the path module receives the subframe of the reset time in the TDD wireless frame data, the path module is reset according to a preset reset signal, and after the reset operation is completed, the subframe located after the reset time in the TDD wireless frame data is received and processed based on the reset path module. The embodiment of the invention enables the fault to have recoverability by increasing the cycle reset of the wireless frame data, can not influence the normal service data transmission of the uplink and the downlink, even if the current wireless frame has data confusion due to some reason, the next wireless frame can be immediately recovered due to the reset initialization, and the retransmission mechanism is provided by combining the wireless system service.
EXAMPLE III
Referring to fig. 7, a schematic structural diagram of a data flow processing apparatus according to an embodiment of the present invention is shown, and as shown in fig. 7, the data flow processing apparatus may include the following modules:
a reset time determining module 310, configured to determine, when the path module receives TDD wireless frame data, a reset time corresponding to the TDD wireless frame data according to a data type of the TDD wireless frame data; the subframe of the TDD wireless frame data at the reset moment is an invalid subframe;
a reset operation executing module 320, configured to, when the path module receives the subframe at the reset time in the TDD wireless frame data, execute a reset operation on the path module according to a pre-generated reset signal;
a subframe processing module 330, configured to receive and process a subframe located after the reset time in the TDD radio frame data based on the reset access module after the reset operation is completed.
According to the processing device for the data flow provided by the embodiment of the invention, when the path module receives Time Division Duplex (TDD) wireless frame data, the reset time corresponding to the TDD wireless frame data is determined according to the data type of the TDD wireless frame data, the subframe of the TDD wireless frame data at the reset time is an invalid subframe, when the path module receives the subframe of the reset time in the TDD wireless frame data, the path module is reset according to a preset reset signal, and after the reset operation is completed, the subframe located after the reset time in the TDD wireless frame data is received and processed based on the reset path module. The embodiment of the invention enables the fault to have recoverability by increasing the cycle reset of the wireless frame data, can not influence the normal service data transmission of the uplink and the downlink, even if the current wireless frame has data confusion due to some reason, the next wireless frame can be immediately recovered due to the reset initialization, and the retransmission mechanism is provided by combining the wireless system service.
Example four
Referring to fig. 8, a schematic structural diagram of a data flow processing apparatus according to an embodiment of the present invention is shown, and as shown in fig. 8, the data flow processing apparatus may include the following modules:
an invalid subframe determining module 410, configured to determine, according to a subframe number index of test TDD radio frame data, a test invalid subframe in the test TDD radio frame data in a transmission process of the test TDD radio frame data;
a reset time recording module 420, configured to record, when the access module receives the test invalid subframe, a test reset time corresponding to the test invalid subframe in the test TDD wireless frame data;
a reset signal generating module 430, configured to generate a reset signal corresponding to the test reset time;
a reset time determining module 440, configured to determine, when the path module receives TDD wireless frame data, a reset time corresponding to the TDD wireless frame data according to a data type of the TDD wireless frame data; the subframe of the TDD wireless frame data at the reset moment is an invalid subframe;
a reset operation executing module 450, configured to, when the path module receives the subframe at the reset time in the TDD wireless frame data, execute a reset operation on the path module according to a pre-generated reset signal;
and a subframe processing module 460, configured to receive and process a subframe located after the reset time in the TDD radio frame data based on the reset access module after the reset operation is completed.
Preferably, the reset signal generating module 430 includes:
the initial reset signal generation submodule is used for generating an initial reset signal when receiving the sub-frame corresponding to the test invalid sub-frame;
the extension reset signal generation submodule is used for carrying out pulse extension processing on the initial reset signal and generating a pulse extension reset signal;
and the final reset signal acquisition submodule is used for splitting the pulse extension reset signal into two clock domain reset signals according to two clock domains in the access module, and taking the two clock domain reset signals as final reset signals.
Preferably, when the data type is an uplink data type, the invalid subframe determining module 410 includes:
the first operation position acquisition submodule is used for acquiring a subframe number index of the test TDD wireless frame data in the transmission process of the test TDD wireless frame data;
and the first invalid subframe acquisition submodule is used for regarding the subframe 0 of the access module as an invalid downlink subframe according to the subframe number index.
Preferably, when the data type is a downlink data type, the invalid subframe determining module 410 includes:
the second operation position acquisition submodule is used for acquiring a subframe number index of the test TDD wireless frame data in the transmission process of the test TDD wireless frame data;
and the second invalid subframe acquisition submodule is used for regarding the subframe 2 of the access module as an invalid uplink subframe according to the subframe number index.
Preferably, when the data type is a downlink data type, the reset operation executing module 450 includes:
the enabling switch closing submodule is used for closing the switch of the data transmission enabling module when the reset signal is detected;
and starting timing after the reset operation is finished, and starting the switch of the data transmission enabling module when the set time length is reached.
According to the processing device for the data flow provided by the embodiment of the invention, when the path module receives Time Division Duplex (TDD) wireless frame data, the reset time corresponding to the TDD wireless frame data is determined according to the data type of the TDD wireless frame data, the subframe of the TDD wireless frame data at the reset time is an invalid subframe, when the path module receives the subframe of the reset time in the TDD wireless frame data, the path module is reset according to a preset reset signal, and after the reset operation is completed, the subframe located after the reset time in the TDD wireless frame data is received and processed based on the reset path module. The embodiment of the invention enables the fault to have recoverability by increasing the cycle reset of the wireless frame data, can not influence the normal service data transmission of the uplink and the downlink, even if the current wireless frame has data confusion due to some reason, the next wireless frame can be immediately recovered due to the reset initialization, and the retransmission mechanism is provided by combining the wireless system service.
Additionally, the embodiment of the present invention further provides an electronic device, which includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface, and the memory complete mutual communication through the communication bus;
a memory for storing a computer program;
and the processor is used for realizing the processing method of the data flow when executing the program stored in the memory.
The embodiment of the invention also provides a computer readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the method for processing the data flow is implemented.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminals (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The present invention provides a method for processing a data flow, a device for processing a data flow, an electronic device and a computer-readable storage medium, which are described in detail above, and specific examples are applied herein to illustrate the principles and embodiments of the present invention, and the description of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (14)
1. A method for processing a data flow, comprising:
when a path module receives TDD wireless frame data, determining reset time corresponding to the TDD wireless frame data according to the data type of the TDD wireless frame data; the subframe of the TDD wireless frame data at the reset moment is an invalid subframe;
when the access module receives the subframe of the reset moment in the TDD wireless frame data, executing reset operation on the access module according to a preset reset signal;
and after the execution of the reset operation is finished, receiving and processing the subframe positioned in the TDD wireless frame data after the reset moment based on a reset access module.
2. The method of claim 1, wherein before determining the reset time corresponding to the TDD radio frame data according to the data type of the TDD radio frame data, the method further comprises:
in the transmission process of testing TDD wireless frame data, determining a test invalid subframe in the testing TDD wireless frame data according to a subframe number index of the testing TDD wireless frame data;
when the access module receives the test invalid subframe, recording the test reset time corresponding to the test invalid subframe in the test TDD wireless frame data;
and generating a reset signal corresponding to the test reset moment.
3. The method of claim 2, wherein the generating the reset signal corresponding to the test reset time comprises:
generating an initial reset signal when a subframe corresponding to the test invalid subframe is received;
carrying out pulse extension processing on the initial reset signal to generate a pulse extension reset signal;
according to two clock domains in a path module, splitting the pulse extension reset signal into two clock domain reset signals, and taking the two clock domain reset signals as final reset signals.
4. The method of claim 2, wherein when the data type is an uplink data type, the determining the test invalid subframe in the test TDD radio frame data according to the subframe number index of the test TDD radio frame data comprises:
acquiring a subframe number index of the test TDD wireless frame data in the transmission process of the test TDD wireless frame data;
and regarding the sub-frame 2 of the channel module as an invalid downlink sub-frame according to the sub-frame number index.
5. The method of claim 2, wherein when the data type is a downlink data type, the determining the test invalid subframe in the test TDD radio frame data according to the subframe number index of the test TDD radio frame data comprises:
acquiring a subframe number index of the test TDD wireless frame data in the transmission process of the test TDD wireless frame data;
and regarding the sub-frame 0 of the access module as an invalid uplink sub-frame according to the sub-frame number index.
6. The method according to claim 1, wherein when the data type is a downlink data type, the performing a reset operation on the pass module according to a pre-generated reset signal includes:
when the reset signal is detected, closing a switch of a data transmission enabling module;
and starting timing after the reset operation is finished, and starting the switch of the data transmission enabling module when the set time length is reached.
7. A device for processing a data flow, comprising:
the reset time determining module is used for determining the reset time corresponding to the TDD wireless frame data according to the data type of the TDD wireless frame data when the access module receives the TDD wireless frame data; the subframe of the TDD wireless frame data at the reset moment is an invalid subframe;
a reset operation execution module, configured to execute a reset operation on the path module according to a pre-generated reset signal when the path module receives the subframe at the reset time in the TDD wireless frame data;
and the subframe data processing module is used for receiving and processing the subframe positioned in the TDD wireless frame data after the reset moment based on the reset access module after the reset operation is finished.
8. The apparatus of claim 7, further comprising:
the invalid subframe determining module is used for determining a test invalid subframe in the test TDD wireless frame data according to the subframe number index of the test TDD wireless frame in the transmission process of the test TDD wireless frame data;
the reset moment recording module is used for recording the test reset moment corresponding to the test invalid subframe in the test TDD wireless frame data when the path module receives the test invalid subframe;
and the reset signal generation module is used for generating a reset signal corresponding to the test reset moment.
9. The apparatus of claim 8, wherein the reset signal generation module comprises:
the initial reset signal generation submodule is used for generating an initial reset signal when receiving the sub-frame corresponding to the test invalid sub-frame;
the extension reset signal generation submodule is used for carrying out pulse extension processing on the initial reset signal and generating a pulse extension reset signal;
and the final reset signal acquisition submodule is used for splitting the pulse extension reset signal into two clock domain reset signals according to two clock domains in the access module, and taking the two clock domain reset signals as final reset signals.
10. The apparatus of claim 8, wherein when the data type is an uplink data type, the invalid subframe determining module comprises:
the first operation position acquisition submodule is used for acquiring a subframe number index of the test TDD wireless frame data in the transmission process of the test TDD wireless frame data;
and the first invalid subframe acquisition submodule is used for regarding the subframe 2 of the access module as an invalid downlink subframe according to the subframe number index.
11. The apparatus of claim 8, wherein when the data type is a downlink data type, the invalid subframe determining module comprises:
the second operation position acquisition submodule is used for acquiring a subframe number index of the test TDD wireless frame data in the transmission process of the test TDD wireless frame data;
and the second invalid subframe acquisition submodule is used for regarding the subframe 0 of the access module as an invalid uplink subframe according to the subframe number index.
12. The apparatus of claim 7, wherein when the data type is a downlink data type, the reset operation performing module comprises:
the enabling switch closing submodule is used for closing the switch of the data transmission enabling module when the reset signal is detected;
and starting timing after the reset operation is finished, and starting the switch of the data transmission enabling module when the set time length is reached.
13. An electronic device is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor and the communication interface are used for realizing mutual communication by the memory through the communication bus;
a memory for storing a computer program;
a processor for implementing the method of processing a data flow according to any one of claims 1 to 6 when executing a program stored in a memory.
14. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out a method of processing a data flow according to any one of claims 1 to 6.
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