CN112003865B - Data frame transmission method and device, storage medium and electronic equipment - Google Patents
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Abstract
The invention discloses a data frame transmission method, a data frame transmission device, a storage medium and electronic equipment, wherein the method comprises the following steps: acquiring a data type of a data frame to be transmitted, wherein the data type is at least one of an SBK frame, an MB head frame, an MB intermediate frame and an MB end frame; determining a preset frame format corresponding to the data type, wherein a first byte of the preset frame format comprises a control plane identifier, a user plane identifier or data; and transmitting the data frame to be transmitted based on the preset frame format. In the transmission method, transmission is performed based on a preset frame format, and the first byte of the preset frame format contains control plane identification, user plane identification or data, because no LB exists, the PDU definition cannot be overlapped, the space occupation is reduced, the method can be used for expanding PDT standards, and non-whole bytes cannot occur in the transmission and storage processes.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for transmitting a data frame, a storage medium, and an electronic device.
Background
The existing Data type DT9 (Data type) of the Professional Digital Trunking PDT (Professional Digital Trunking) standard is almost left, if PDT wants to support the Data structure of the USBD format in DMR, it needs to expand one DT, and for the service of internet of things, there will be more Data requirements of the UMBD (universal Multiple block Data) format, referring to the frame structure of MBC, it needs to expand two DTs, and there is not enough DT for expansion today.
Further Protocol Data Unit PDU (Protocol Data Unit) definitions overlap: for data type = MBC header, DT is sufficient to identify that this frame of data is an MBC header, and the Last packet LB (Last Block) is not needed; for data type = MBC subsequent frames, the LB must be present because DT together with the LB decides whether it is an intermediate frame or a last post, but the presence of LB again causes non-integer byte problems, causing storage and handling inconvenience.
Disclosure of Invention
In view of the above, the present invention provides a method, an apparatus, a storage medium, and an electronic device for transmitting a data frame, so as to solve the problem that DT cannot be extended during transmission of the data frame, and due to the fact that PDU definitions overlap, DT and LB together determine whether the DT is an intermediate frame or a last frame, but LB causes a non-whole byte problem, which causes inconvenient storage and processing, and the specific scheme is as follows:
a method for transmitting a data frame, comprising:
acquiring a data type of a data frame to be transmitted, wherein the data type is at least one of an SBK frame, an MB header frame, an MB intermediate frame and an MB end frame;
determining a preset frame format corresponding to the data type, wherein a first byte of the preset frame format comprises a control plane identifier, a user plane identifier or data;
and transmitting the data frame to be transmitted based on the preset frame format.
Optionally, the method for acquiring the data type of the data frame to be transmitted includes:
acquiring a synchronous word in a data frame to be transmitted;
determining the Slot Type in the data frame to be transmitted according to the synchronous words
And traversing the Slot Type to search a Data Type field to obtain the Data Type of the Data frame to be transmitted.
Optionally, the method for determining a preset frame format corresponding to the data type includes:
under the condition that the data type is an SBK frame or an MB head frame, enabling a first byte in the data frame to be transmitted to be a control plane identifier or a user plane identifier;
the method described above, optionally, further includes:
and under the condition that the first byte is the control plane identifier, the data frame to be transmitted is a CSBK frame or an MBC frame.
The above method, optionally, further includes:
and under the condition that the first byte is the control surface identifier, the data frame to be transmitted is a USBK frame or an MBU frame.
Optionally, the method for determining a preset frame format corresponding to the data type includes:
and under the condition that the data type is an MB intermediate frame or an MB end frame, enabling the first byte to be data.
An apparatus for transmitting a data frame, comprising:
the device comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring the data type of a data frame to be transmitted, and the data type is at least one of an SBK frame, an MB head frame, an MB middle frame and an MB end frame;
a determining module, configured to determine a preset frame format corresponding to the data type, where a first byte of the preset frame format includes a control plane identifier, a user plane identifier, or data;
and the transmission module is used for transmitting the data frame to be transmitted based on the preset frame format.
The above apparatus, optionally, the obtaining module includes:
the device comprises an acquisition unit, a transmission unit and a processing unit, wherein the acquisition unit is used for acquiring a synchronous word in a data frame to be transmitted;
a determining unit, configured to determine a Slot Type in the data frame to be transmitted according to the sync word
And the searching unit is used for traversing the Slot Type to search the Data Type field to obtain the Data Type of the Data frame to be transmitted.
A storage medium, the storage medium including a stored program, wherein when the program runs, a device where the storage medium is located is controlled to execute the above-mentioned data frame transmission method.
An electronic device, the device comprising at least one processor, and at least one memory, bus connected to the processor; the processor and the memory are communicated with each other through the bus; the processor is used for calling the program instructions in the memory so as to execute the data frame transmission method.
Compared with the prior art, the invention has the following advantages:
the invention discloses a data frame transmission method, which comprises the following steps: acquiring a data type of a data frame to be transmitted, wherein the data type is at least one of an SBK frame, an MB header frame, an MB intermediate frame and an MB end frame; determining a preset frame format corresponding to the data type, wherein a first byte of the preset frame format comprises a control plane identifier, a user plane identifier or data; and transmitting the data frame to be transmitted based on the preset frame format. In the transmission method, the transmission is carried out based on the preset frame format, and the first byte of the preset frame format comprises a control plane identifier, a user plane identifier or data, because LB does not exist, PDU definition can not be overlapped, space occupation is reduced, the method can be used for expanding PDT standard, and non-whole bytes can not appear in the transmission and storage processes.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a diagram illustrating a CSBK (control signaling frame) message structure in PDT in the prior art;
FIG. 2 is a diagram illustrating the structure of an MBC frame in PDT standard in the prior art;
FIG. 3 is a diagram of a prior art USBD frame structure in the DMR standard;
fig. 4 is a flowchart of a data frame transmission method according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a data frame transmitted in a method for transmitting a data frame disclosed in an embodiment of the present application;
fig. 6 is a schematic diagram of a data frame structure transmitted in a data frame transmission method disclosed in an embodiment of the present application;
fig. 7 is a schematic structural diagram of another data frame transmitted in a data frame transmission method disclosed in an embodiment of the present application;
fig. 8 is a schematic structural diagram of another data frame transmitted in a data frame transmission method disclosed in an embodiment of the present application;
fig. 9 is a block diagram of a transmission apparatus for data frames according to an embodiment of the present application;
fig. 10 is a block diagram of an electronic device according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The invention discloses a data frame transmission method and a device, which are applied to the data frame transmission process, and the embodiment of the invention processes the problems of DT expansion, LB non-integer byte generation, data frame storage and processing inconvenience caused by the non-integer byte and the definition overlapping between LB and DT in the PDT/Digital trunking communication standard DMR (Digital Mobile Radio) standard
Further, the content of Data type PDU (Protocol Data Unit) in the existing PDT standard is shown in table 1, the CSBK frame structure in the existing PDT standard is shown in fig. 1, and the MBC frame structure is shown in fig. 2.
TABLE 1 information content of Data Types (DT) in PDT Standard
The DMR definition of the standard DT PDU of the latest 2017 is shown in table 2. The new addition of a Data type of universal Single packet Data USBD (Unified Single Block Data) format requires the DT to be extended.
TABLE 2 definition of DT PDU
The newly added USBD data format in the latest DMR standard is shown in fig. 3. From the above chart it can be derived:
there are basically a few DTs in PDT standard, if PDT wants to support the Data structure in USBD format in DMR, it needs to extend one DT Data type, and for internet of things services, there is a more general multi-packet Data UMBD (Unified Multiple Block Data) format Data requirement, referring to the frame structure of MBC, it needs to extend two DTs, and there is not enough DT for extension today.
The definition of PDUs has an overlap: for data type = MBC header frame, DT is already sufficient to identify that this frame of data is an MBC header frame, LB is not required; for DT = MBC intermediate frames, the LB must be present because DT together with LB decides whether it is an intermediate frame or the last post, but the presence of LB again leads to non-integer byte problems. For example, for a frame with DT being CSBK, LB is always 1, which is not needed; the LB of the MBC header frame is always 0, and the LB of the MBC intermediate frame may be 0 or 1.
MBC data minimum 2 packets maximum 4 packets:
the MBC data is not a whole byte, which causes inconvenience in data transmission and data storage.
Therefore, the present invention provides a data frame transmission method, which solves the data transmission problem, the data storage problem, the subsequent expansion problem, the whole byte processing problem and the PDU overlapping problem, and replaces the data types CSBK frame, MBC frame and MBC intermediate frame in the protocol data unit in the PDT standard with SBK frame, MB header frame, MB intermediate frame and MB end frame in advance, and the execution flow of the transmission method is as shown in fig. 4, and comprises the steps of:
s101, acquiring a data type of a data frame to be transmitted, wherein the data type is at least one of an SBK frame, an MB head frame, an MB middle frame and an MB end frame;
in the embodiment of the present invention, firstly, a SYNC (synchronization word) portion of the Data frame to be transmitted needs to be captured, and then slot types (which are added together for 20 bits) on both sides of the SYNC are solved, according to a Data type in the slot types, the Data type may be any one of an SBK frame, an MB header frame, an MB middle frame, and an MB end frame, and how to analyze an info portion of the Data frame to be transmitted is determined according to the Data type, such as one of an SBK frame mode analysis, an MB header frame mode analysis, an MB middle frame mode analysis, and an MB end frame mode analysis.
And S102, determining a preset frame format corresponding to the data type, wherein a first byte of the preset frame format comprises a control plane identifier, a user plane identifier or data.
In the embodiment of the present invention, a preset frame format is constructed in advance for each data type, and a preset frame format corresponding to the data type is determined, where a first byte of the preset frame format includes a control plane identifier, a user plane identifier, or data, where the first byte refers to a high-order bit of the first byte, that is, a 7 th bit (the 0 th bit is a low-order bit) is a control plane identifier, a user plane identifier, or data, and the remaining bits in the first byte are different according to different types of corresponding frames.
When the data type is an SBK frame or an MB header frame, setting a first byte in the data frame to be transmitted as a control plane identifier or a User plane identifier, where when the first byte is the control plane identifier, the data frame to be transmitted is a CSBK frame or an MBC frame, and when the first byte is the control plane identifier, the data frame to be transmitted is a USBK (User signaling BlocK) frame or an MBU (Multiple BlocK User packet) frame; and under the condition that the data type of the data frame to be transmitted is an MB intermediate frame or an MB end frame, enabling the first byte to be data.
Further, in this embodiment of the present invention, the control plane identifier or the user plane identifier may be a number or a letter, and a specific existence form of the control plane identifier or the user plane identifier is not limited.
S103, transmitting the data frame to be transmitted based on the preset frame format.
In the embodiment of the present invention, a Control Plane identifier is denoted by C, and a User Plane identifier is denoted by U for example, and an LB position is changed to a User Plane/Control Plane U/C (User Plane/Control Plane), which only exists in CSBK and MBC header frames, so that the significance is User Plane or Control Plane data, which can distinguish signaling or data, and does not affect the whole byte processing.
If the data type is an SBK frame, U/C = C, the high-order bit of the first byte in the frame is U/C = C, and the remaining bits are command codes PF and CSBKO, the structure of the preset frame structure CSBK frame corresponding to the high-order bit is as shown in fig. 5, and the data to be transmitted is transmitted based on the preset frame structure.
If the data Type is an SBK frame, U/C = U in the SBK of the corresponding preset frame structure, where the USBK and the USBD in the DMR have the same structure and can be directly compatible without newly adding a DT Type, and the structure of the compatible preset frame structure USBD frame is as shown in fig. 6, where the high order of the first byte in the frame is U/C = U, and the rest of the bits are a Service Type, and the data to be transmitted is transmitted based on the preset frame structure.
If the data types are an MB header frame, an MB intermediate frame, and an MB end frame, and U/C = C, the structure of the predetermined frame structure MBC frame is as shown in fig. 7, the high bit of the first byte in the MBC header frame is U/C = C, the rest bits are command codes PF and CSBKO, the first byte in the MBC intermediate frame and the MBC end frame is data, and the data to be transmitted is transmitted based on the predetermined frame structure.
If the data types are an MB header frame, an MB intermediate frame, and an MB end frame, and U/C = U, the structure of the predetermined frame structure MBU frame is as shown in fig. 8, the high order bit of the first byte in the MBC header frame is U/C = U, the rest bits are Service Type, the first byte in the MBU intermediate frame and the MBU end frame is data, and the data to be transmitted is transmitted based on the predetermined frame structure.
The invention discloses a data frame transmission method, which comprises the following steps: acquiring a data type of a data frame to be transmitted, wherein the data type is at least one of an SBK frame, an MB header frame, an MB intermediate frame and an MB end frame; determining a preset frame format corresponding to the data type, wherein a first byte of the preset frame format comprises a control plane identifier, a user plane identifier or data; and transmitting the data frame to be transmitted based on the preset frame format. In the transmission method, transmission is performed based on a preset frame format, and the first byte of the preset frame format contains control plane identification, user plane identification or data, because no LB exists, the PDU definition cannot be overlapped, the space occupation is reduced, the method can be used for expanding PDT standards, and non-whole bytes cannot occur in the transmission and storage processes.
In the embodiment of the invention, based on the improved method, the MBC or MBU frame is taken as an example, and the problem of non-whole bytes is solved after improvement.
Based on the above method for improving the frame structure, the embodiment of the present invention further discloses a transmission device for data frames, where a structural block diagram of the transmission device is shown in fig. 9, and the transmission device includes:
an acquisition module 201, a determination module 202 and a transmission module 203.
Wherein the content of the first and second substances,
the obtaining module 201 is configured to obtain a data type of a data frame to be transmitted, where the data type is at least one of an SBK frame, an MB header frame, an MB middle frame, and an MB end frame;
the determining module 202 is configured to determine a preset frame format corresponding to the data type, where a first byte of the preset frame format includes a control plane identifier, a user plane identifier, or data;
the transmission module 203 is configured to transmit the data frame to be transmitted based on the preset frame format.
The invention discloses a data frame transmission device, comprising: acquiring a data type of a data frame to be transmitted, wherein the data type is at least one of an SBK frame, an MB head frame, an MB intermediate frame and an MB end frame; determining a preset frame format corresponding to the data type, wherein a first byte of the preset frame format comprises a control plane identifier, a user plane identifier or data; and transmitting the data frame to be transmitted based on the preset frame format. In the transmission device, transmission is performed based on a preset frame format, and a first byte of the preset frame format includes a control plane identifier, a user plane identifier or data, because LB does not exist, PDU definitions are not overlapped, space occupation is reduced, the transmission device can be used for expanding a PDT standard, and non-whole bytes can be prevented from occurring in transmission and storage processes.
In this embodiment of the present invention, the obtaining module 201 includes:
an acquisition unit 204, a determination unit 205 and a lookup unit 206.
Wherein the content of the first and second substances,
the obtaining unit 204 is configured to obtain a synchronization word in a data frame to be transmitted;
the determining unit 205 is configured to determine a Slot Type in the data frame to be transmitted according to the sync word
The searching unit 206 is configured to search a Data Type field through the Slot Type to obtain the Data Type of the Data frame to be transmitted.
In this embodiment of the present invention, the determining module 202 includes: the unit 207 is replaced.
Wherein the content of the first and second substances,
the replacing unit 207 is configured to make a first byte in the data frame to be transmitted be a control plane identifier or a user plane identifier when the data type is an SBK frame or an MB header frame;
in an embodiment of the present invention, the determining module includes: a data unit 208.
Wherein the content of the first and second substances,
the data unit 208 makes the first byte data if the data type is an MB intermediate frame or an MB end frame.
In an embodiment of the present invention, the synchronization apparatus includes a processor and a memory, the acquiring module, the determining module, the transmitting module, and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to implement corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The kernel can be set to be one or more than one, transmission is carried out based on a preset frame format in the process of realizing data frame transmission by adjusting kernel parameters, a first byte of the preset frame format comprises a control surface identifier, a user surface identifier or data, because LB does not exist, the PDU definition is not overlapped, the space occupation is reduced, the PDT standard can be used for expanding, and non-whole bytes can not appear in the transmission and storage processes
An embodiment of the present invention provides a storage medium on which a program is stored, the program implementing the transmission method of the data frame when executed by a processor.
The embodiment of the invention provides a processor, which is used for running a program, wherein the transmission method of the data frame is executed when the program runs.
An embodiment of the present invention provides an electronic device, and referring to fig. 10, a device 3 includes at least one processor 301, and at least one memory 302 and a bus 303 connected to the processor; the processor 301 and the memory 302 complete communication with each other through the bus 303; the processor 301 is arranged to call program instructions in the memory 302 to perform the above described clock synchronization method for transmitting data over the common public radio interface.
The device herein may be a server, a PC, a PAD, a mobile phone, etc.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. For the device-like embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
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 apparatus 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 apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functions of the units may be implemented in the same software and/or hardware or in a plurality of software and/or hardware when implementing the invention.
From the above description of the embodiments, it is clear to those skilled in the art that the present invention can be implemented by software plus necessary general hardware platform. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which may be stored in a storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments or some parts of the embodiments.
The foregoing describes in detail a method, an apparatus, a storage medium, and an electronic device for transmitting a data frame provided by the present invention, and a specific example is applied in the present document to explain the principle and the implementation of the present invention, and the description of the foregoing embodiment is only used to help understanding 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 (8)
1. A method for transmitting a data frame, comprising:
acquiring a data type of a data frame to be transmitted, wherein the data type is at least one of an SBK frame, an MB header frame, an MB intermediate frame and an MB end frame, and the SBK frame, the MB header frame, the MB intermediate frame and the MB end frame are obtained by replacing a data type CSBK, an MBC frame and an MBC intermediate frame in a protocol data unit in a PDT standard in advance;
determining a preset frame format corresponding to the data type, wherein a first byte of the preset frame format comprises a control plane identifier, a user plane identifier or data;
transmitting the data frame to be transmitted based on the preset frame format;
the method for acquiring the data type of the data frame to be transmitted comprises the following steps:
acquiring a synchronous word in a data frame to be transmitted;
determining the Slot Type in the data frame to be transmitted according to the synchronous words
And traversing the Slot Type to search a Data Type field to obtain the Data Type of the Data frame to be transmitted.
2. The method of claim 1, wherein determining a preset frame format corresponding to the data type comprises:
and under the condition that the data type is an SBK frame or an MB header frame, enabling a first byte in the data frame to be transmitted to be a control plane identifier or a user plane identifier.
3. The method of claim 2, further comprising:
and under the condition that the first byte is the control plane identifier, the data frame to be transmitted is a CSBK frame or an MBC frame.
4. The method of claim 2, further comprising:
and under the condition that the first byte is the control plane identifier, the data frame to be transmitted is a USBK frame or an MBU frame.
5. The method of claim 1, wherein determining a preset frame format corresponding to the data type comprises:
and under the condition that the data type is an MB intermediate frame or an MB end frame, enabling the first byte to be data.
6. An apparatus for transmitting a data frame, comprising:
the system comprises an acquisition module, a display module and a display module, wherein the acquisition module is used for acquiring the data type of a data frame to be transmitted, the data type is at least one of an SBK frame, an MB head frame, an MB intermediate frame and an MB end frame, and the SBK frame, the MB head frame, the MB intermediate frame and the MB end frame are obtained by being replaced in advance according to the data type CSBK, the MBC frame and the MBC intermediate frame in a protocol data unit in PDT standard;
a determining module, configured to determine a preset frame format corresponding to the data type, where a first byte of the preset frame format includes a control plane identifier, a user plane identifier, or data;
the transmission module is used for transmitting the data frame to be transmitted based on the preset frame format;
the acquisition module includes:
the device comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring a synchronous word in a data frame to be transmitted;
a determining unit, configured to determine a Slot Type in the data frame to be transmitted according to the sync word
And the searching unit is used for traversing the Slot Type to search the Data Type field to obtain the Data Type of the Data frame to be transmitted.
7. A storage medium, characterized in that the storage medium stores a program, wherein when the program runs, a device on which the storage medium is located is controlled to execute the transmission method of the data frame according to any one of claims 1 to 5.
8. An electronic device comprising at least one processor, and at least one memory, bus connected to the processor; the processor and the memory complete mutual communication through the bus; the processor is configured to invoke program instructions in the memory to perform the method of transmitting a data frame according to any of claims 1-5.
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