Transmission method and device of important communication service and readable storage medium

Abstract

The invention provides an important communication service transmission method and device and a readable storage medium. The method comprises the following steps: dividing a service flow into an important service data flow and a common service data flow; the method comprises the following steps: carrying out FEC (Forward Error Correction) coding and symbol mapping on an important service data stream by adopting a fixed Fixed-Low ModCod which is statically configured in advance; dynamically selecting a current optimal modulation and coding scheme ACM ModCod for the common service data flow; and assembling the data into the same physical frame, and transmitting the data through the same carrier, so that a receiving end demodulates and decodes the physical frame after receiving the physical frame to obtain important service data and common service data. According to the method and the device, the influence of channel fluctuation on important services can be thoroughly isolated while the advantages of the ACM are compatible.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a method, apparatus and readable storage medium for transmitting an important communication service. Background Technology

[0002] As a crucial component in satellite communications, modems have seen continuous evolution in performance and functionality, leading to the widespread adoption of adaptive coding modulation (ACM) technology by numerous manufacturers. ACM is a key technology for improving the spectral efficiency and link robustness of satellite communication systems. This technology involves the receiver monitoring Channel State Information (CSI) in real time and informing the transmitter via a feedback link. This allows for dynamic adjustment of the modulation scheme (e.g., QPSK, 16APSK, 32APSK) and coding rate (e.g., 1 / 2, 3 / 4, 9 / 10), achieving adaptive matching of the modulation and coding scheme (ModCod).

[0003] The core advantage of ACM lies in its ability to maximize throughput when channel conditions are favorable, and to automatically downgrade to a lower-order ModCod to maintain link connectivity when channel conditions deteriorate (such as rain attenuation), thereby achieving a dynamic balance between efficiency and reliability.

[0004] However, existing ACM technology has inherent flaws: its modulation and coding strategy adjustment is based only on physical layer channel quality, which is a link-oriented global optimization that ignores the heterogeneity of the services carried on the link and the different Quality of Service (QoS) requirements.

[0005] Therefore, ensuring the reliable transmission of important communication services has become a problem that needs to be solved. Summary of the Invention

[0006] The technical problem to be solved by this application is to provide a transmission method, apparatus and readable storage medium for important communication services, in order to address the above-mentioned shortcomings of the prior art and solve the problems existing in the prior art.

[0007] In a first aspect, this application provides a method for transmitting an important communication service, the method comprising: S1. The sending end identifies the service flow, divides the service flow into important service data flow and ordinary service data flow, and adds a priority identifier to the important service data flow. S2. The transmitting end uses a pre-statically configured, fixed low-order modulation and coding scheme, Fixed-Low ModCod, to perform FEC encoding and symbol mapping on important service data streams; S3. The transmitting end dynamically selects the current optimal modulation and coding scheme (ACM ModCod) for ordinary service data streams based on the channel state information fed back in real time. S4. The transmitting end assembles the data processed by Fixed-Low ModCod and ACM ModCod respectively into the same physical frame and transmits it through the same carrier so that the receiving end can perform demodulation and decoding processing after receiving the physical frame to obtain important service data and ordinary service data.

[0008] In some embodiments, S1 includes: The sending end identifies the service flow based on at least one of the source / destination IP address, port number, protocol type, and Differential Service Code Point (DSCP), and distinguishes the service flow into important service data flow and ordinary service data flow.

[0009] In some embodiments, after S1 and before S2, the following is also included: The sending end maintains two logically independent sending buffer queues, including a high-reliability queue (HRQ) and a high-performance queue (HEQ). The high-reliability queue is used to buffer important service data streams that have been identified, while the high-performance queue is used to buffer ordinary service data streams.

[0010] In some embodiments, in S4, the frame header of the physical frame contains indication information, which is used to identify the transmission mode of the data within the frame.

[0011] In some embodiments, the indication information includes the length of each region and the ModCod type, wherein the ModCod type includes Fixed-Low ModCod and ACM ModCod.

[0012] In some embodiments, the receiving end performs demodulation and decoding processing after receiving the physical frame, including: The receiving end parses the indication information in the frame header to obtain the Fixed-Low ModCod data area and the ACM ModCod data area; Demodulation and decoding processes were performed on the Fixed-Low ModCod data area and the ACM ModCod data area, respectively.

[0013] In some embodiments, demodulation and decoding processes are performed on the Fixed-Low ModCod data area and the ACM ModCod data area, respectively, including: The data in the Fixed-Low ModCod data area is demodulated and decoded using known, fixed low-order modulation and coding parameters from the transmitter to recover important service data. Demodulate and decode the data in the ACM ModCod data area to restore normal business data.

[0014] Secondly, this application provides a transmission apparatus for an important communication service, the apparatus comprising: The business identification module is configured to identify business flows, divide them into important business data flows and ordinary business data flows, and add priority identifiers to important business data flows. The first encoding module is configured to perform FEC encoding and symbol mapping on important service data streams using a pre-statically configured, fixed low-order modulation coding scheme, Fixed-Low ModCod. The second coding module is configured to dynamically select the current optimal modulation and coding scheme, ACM ModCod, for ordinary service data streams based on real-time feedback of channel state information. The data transmission module is configured to assemble the data processed by Fixed-Low ModCod and ACM ModCod respectively into the same physical frame and transmit it through the same carrier, so that the receiving end can perform demodulation and decoding processing after receiving the physical frame to obtain important service data and ordinary service data.

[0015] Thirdly, this application provides a transmission apparatus for an important communication service, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to implement the transmission method for the important communication service described in the first aspect above.

[0016] Fourthly, this application provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the transmission method of the important communication service described in the first aspect.

[0017] This application provides a method, apparatus, and readable storage medium for transmitting important communication services. The method includes: a transmitting end identifying a service stream, dividing the service stream into an important service data stream and a normal service data stream, and adding a priority identifier to the important service data stream; the transmitting end performing FEC coding and symbol mapping on the important service data stream using a pre-statically configured, fixed low-order modulation and coding scheme, Fixed-LowModCod; the transmitting end dynamically selecting the currently optimal modulation and coding scheme, ACM ModCod, for the normal service data stream based on real-time feedback channel state information; the transmitting end assembling the data processed by Fixed-LowModCod and ACM ModCod respectively into the same physical frame and transmitting it through the same carrier, so that the receiving end can perform demodulation and decoding processing after receiving the physical frame to obtain the important service data and the normal service data. This application provides a transmission method for important communication services. By introducing a service awareness and hierarchical processing mechanism into the traditional ACM framework, a "logical dedicated channel" using a fixed-low-order robust ModCod is allocated to the important service. This channel is then multiplexed and transmitted at the physical layer with ordinary service data using dynamic ACM. This approach completely isolates the impact of channel fluctuations on important services while maintaining the advantages of ACM. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0019] Figure 1 A flowchart illustrating a transmission method for an important communication service provided in an embodiment of this application; Figure 2 A flowchart illustrating another important communication service transmission method provided in the embodiments of this application; Figure 3 A schematic diagram of the structure of a transmission device for an important communication service provided in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of a transmission device for another important communication service provided in an embodiment of this application.

[0020] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this application, the embodiments of this application will be further described in detail below with reference to the accompanying drawings.

[0022] It is understood that the specific embodiments and accompanying drawings described herein are merely for explaining this application and are not intended to limit this application.

[0023] It is understood that, without conflict, the various embodiments and features in the embodiments of this application can be combined with each other.

[0024] It is understood that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, while parts unrelated to this application are not shown in the drawings.

[0025] It is understood that each unit or module involved in the embodiments of this application may correspond to only one entity structure, or may be composed of multiple entity structures, or multiple units or modules may be integrated into one entity structure.

[0026] It is understood that the terms "first," "second," etc., used in the embodiments of this application are used to distinguish different objects or to distinguish different treatments of the same object, rather than to describe a specific order of objects.

[0027] It is understood that, without conflict, the functions and steps marked in the flowcharts and block diagrams of this application may occur in a different order than those marked in the accompanying drawings.

[0028] It is understood that the flowcharts and block diagrams of this application illustrate the possible architecture, functions, and operations of systems, apparatuses, devices, and methods according to various embodiments of this application. Each block in a flowchart or block diagram may represent a unit, module, program segment, or code, containing executable instructions for implementing the specified function. Furthermore, each block or combination of blocks in the block diagrams and flowcharts may be implemented using a hardware-based system to implement the specified function, or using a combination of hardware and computer instructions.

[0029] It is understood that the units and modules involved in the embodiments of this application can be implemented by software or by hardware. For example, the units and modules can be located in the processor.

[0030] It is understood that the specific values ​​of each parameter in this application are merely illustrative examples, and in practical applications, the parameters can be optimized and adjusted based on specific requirements.

[0031] The current ACM mechanism of point-to-point satellite modems suffers from a lack of service awareness. Its "one-size-fits-all" approach cannot provide differentiated and guaranteed transmission services for high-priority, high-reliability services (such as industrial automation and power grid control), and cannot simultaneously meet the stringent "extremely high reliability" requirements of important services.

[0032] Specifically, all services, regardless of their priority (such as high-reliability remote control commands and ordinary data file transfers), are forced to use the same ModCod, which leads to the following problems: (1) For important services: When the channel is good, although a high-order ModCod is used, its ability to resist sudden interference is weak. Short-term deep fading can cause high bit error rate and reliability cannot be guaranteed. When the channel deteriorates, although a low-order ModCod is used to ensure connectivity, the throughput drops sharply, which may cause service delay and real-time performance cannot be met.

[0033] (2) Regarding system resources: It is impossible to achieve refined resource allocation based on business characteristics.

[0034] This application aims to overcome the deficiencies of the prior art and provide a transmission method and apparatus for important communication services. Under the premise of sharing the same physical satellite carrier, it can both allow ordinary services to continue to enjoy the spectrum efficiency gain brought by ACM and provide an independent, stable and highly reliable transmission channel for important services, thereby achieving refined quality of service assurance for services with different priorities.

[0035] The core idea of ​​this application is to introduce a service-aware and hierarchical processing mechanism within the traditional ACM framework. By allocating a "logically dedicated channel" that uses a fixed-low ModCod for critical services, and multiplexing this channel with ordinary service data using dynamic ACM at the physical layer, the impact of channel fluctuations on critical services can be completely isolated while maintaining the advantages of ACM.

[0036] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0037] This application provides a method for transmitting an important communication service. The working process of this method can be implemented by electronic devices, such as computers, handheld smart terminals, etc. For ease of explanation, the embodiments of this application are described with the computer as the subject of the method execution.

[0038] Figure 1 A schematic diagram illustrating a transmission method for an important communication service provided in the embodiments of this application. Figure 2 Another schematic diagram of the transmission method for an important communication service provided in the embodiments of this application, as shown below. Figure 1 as well as Figure 2 As shown, this application provides a method for transmitting an important communication service, the method comprising S1-S4, as follows: S1. The sending end identifies the service flow, divides the service flow into important service data flow and ordinary service data flow, and adds a priority identifier to the important service data flow. In some embodiments, S1 includes: The sending end identifies the service flow based on at least one of the source / destination IP address, port number, protocol type, and Differential Service Code Point (DSCP), and distinguishes the service flow into important service data flow and ordinary service data flow.

[0039] Specifically, this step involves service classification and identification: the service classification module of the sending MODEM identifies the input service flow based on factors such as source / destination IP address, port number, protocol type (e.g., TCP / UDP), and DSCP (Differentiated Services Code Point), distinguishing the service into important service data flows and ordinary service data flows, and adding priority identifiers.

[0040] In some embodiments, after S1 and before S2, the following is also included: The sending end maintains two logically independent sending buffer queues, including a high-reliability queue (HRQ) and a high-performance queue (HEQ). The high-reliability queue is used to buffer important service data streams that have been identified, while the high-performance queue is used to buffer ordinary service data streams.

[0041] Specifically, this step involves dual-queue management: the transmitting MODEM internally maintains two logically independent transmit buffer queues. High-Reliability Queue (HRQ): Used to cache identified critical business data.

[0042] High-Efficiency Queue (HEQ): Used to cache ordinary business data.

[0043] S2. The transmitting end uses a pre-statically configured, fixed low-order modulation and coding scheme, Fixed-Low ModCod, to perform FEC encoding and symbol mapping on important service data streams; Specifically, this step involves fixed ModCod mapping: the fixed mapping module of the transmitting MODEM always retrieves data from the HRQ and uses a pre-statically configured, fixed low-order modulation and coding scheme (such as QPSK 1 / 2) for FEC encoding and symbol mapping. The selection of this Fixed-Low ModCod is based on the criterion of achieving error-free transmission even under the worst channel conditions designed for the system.

[0044] In this application, the concept of "Fixed-Low ModCod" refers to the core design principle of pre-configuring a fixed and robust ModCod for important services and using it consistently regardless of channel changes during communication.

[0045] S3. The transmitting end dynamically selects the current optimal modulation and coding scheme (ACM ModCod) for ordinary service data streams based on the channel state information fed back in real time. Specifically, this step is ACM dynamic modulation mapping: the ACM control module of the transmitting MODEM dynamically selects the current optimal modulation and coding scheme (ACM ModCod, such as 16APSK 3 / 4) for the data in the HEQ based on the real-time feedback of channel state information.

[0046] S4. The transmitting end assembles the data processed by Fixed-Low ModCod and ACM ModCod respectively into the same physical frame and transmits it through the same carrier so that the receiving end can perform demodulation and decoding processing after receiving the physical frame to obtain important service data and ordinary service data.

[0047] In some embodiments, in S4, the frame header of the physical frame contains indication information, which is used to identify the transmission mode of the data within the frame.

[0048] In some embodiments, the indication information includes the length of each region and the ModCod type, wherein the ModCod type includes Fixed-Low ModCod and ACM ModCod.

[0049] Specifically, this step involves frame structure and multiplexing: the frame multiplexer of the transmitting modem assembles the data units, processed separately by Fixed-LowModCod and ACM ModCod, into a single physical frame. The frame header of this physical frame contains explicit indication information (such as the length of each region and ModCod type) to identify which data regions within the frame are transmitted using Fixed-LowModCod and which use ACM ModCod. Subsequently, this composite frame is modulated and transmitted via the same carrier.

[0050] In point-to-point satellite communication, this application proposes a transmission method that uses fixed low-order ModCod and dynamic ACM ModCod for different services on a single carrier and reuses them based on service priority. Its innovation lies in the cross-layer combination of service awareness and physical layer modulation.

[0051] In some embodiments, the receiving end performs demodulation and decoding processing after receiving the physical frame, including: The receiving end parses the indication information in the frame header to obtain the Fixed-Low ModCod data area and the ACM ModCod data area; Demodulation and decoding processes were performed on the Fixed-Low ModCod data area and the ACM ModCod data area, respectively.

[0052] In some embodiments, demodulation and decoding processes are performed on the Fixed-Low ModCod data area and the ACM ModCod data area, respectively, including: The data in the Fixed-Low ModCod data area is demodulated and decoded using known, fixed low-order modulation and coding parameters from the transmitter to recover important service data. Demodulate and decode the data in the ACM ModCod data area to restore normal business data.

[0053] Specifically, this step involves receiving and demultiplexing, including: The receiving modem first receives and demodulates the physical frame. The frame parsing module parses the indication information in the frame header, identifies the Fixed-Low ModCod data area, and the fixed ModCod decoding module directly uses the known parameters fixed with the sending end (corresponding to QPSK 1 / 2) to demodulate and decode the data in this area, recovering important service data. Subsequently, according to the indication information, the ACM ModCod data area is demodulated and decoded to recover ordinary service data.

[0054] This application provides a transmission method for important communication services. By introducing a service awareness and hierarchical processing mechanism into the traditional ACM framework, a "logical dedicated channel" using a fixed-low-order robust ModCod is allocated to the important service. This channel is then multiplexed and transmitted at the physical layer with ordinary service data using dynamic ACM. This approach completely isolates the impact of channel fluctuations on important services while maintaining the advantages of ACM.

[0055] It should be understood that although the steps in the flowcharts of the above embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the sub-steps or stages of other steps.

[0056] Figure 3 A schematic diagram of a transmission apparatus for an important communication service provided in the embodiments of this application, such as... Figure 3 As shown, this application provides a transmission apparatus for an important communication service, the apparatus comprising: The business identification module 11 is configured to identify business flows, divide business flows into important business data flows and ordinary business data flows, and add priority identifiers to important business data flows. The first encoding module 12 is configured to perform FEC encoding and symbol mapping on important service data streams using a pre-statically configured, fixed low-order modulation coding scheme, Fixed-Low ModCod. The second coding module 13 is configured to dynamically select the current optimal modulation and coding scheme ACM ModCod for ordinary service data streams based on the channel state information fed back in real time. The data transmission module 14 is configured to assemble the data processed by Fixed-Low ModCod and ACM ModCod respectively into the same physical frame and transmit it through the same carrier, so that the receiving end can perform demodulation and decoding processing after receiving the physical frame to obtain important service data and ordinary service data.

[0057] Regarding the limitations on the transmission devices for important communication services, please refer to the limitations on the transmission methods for important communication services in the above embodiments of this application, which will not be repeated here.

[0058] Figure 4 Another schematic diagram of a transmission apparatus for an important communication service provided in the embodiments of this application, as shown below. Figure 4 As shown, the device includes a memory 22 and a processor 21. The memory stores a computer program, and the processor is configured to run the computer program to perform the methods described in the above embodiments of this application.

[0059] The memory is connected to the processor. The memory can be flash memory, read-only memory or other types of memory. The processor can be a central processing unit or a microcontroller.

[0060] In some embodiments, this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the methods described in the above embodiments of this application.

[0061] The computer-readable storage medium includes volatile or non-volatile, removable or non-removable media implemented in any method or technology for storing information, such as computer-readable instructions, data structures, computer program modules or other data. Computer-readable storage media include, but are not limited to, RAM (Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash memory or other memory technologies, CD-ROM (Compact Disc Read-Only Memory), DVD or other optical disc storage, cartridges, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer.

[0062] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this application, and this application is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this application, and these modifications and improvements are also considered to be within the scope of protection of this application.

Claims

1. A method for transmitting an important communication service, characterized in that, The method includes: S1. The sending end identifies the service flow, divides the service flow into important service data flow and ordinary service data flow, and adds a priority identifier to the important service data flow. S2. The transmitting end uses a pre-statically configured, fixed low-order modulation and coding scheme, Fixed-Low ModCod, to perform FEC encoding and symbol mapping on important service data streams; S3. The transmitting end dynamically selects the current optimal modulation and coding scheme (ACM ModCod) for ordinary service data streams based on the channel state information fed back in real time. S4. The transmitting end assembles the data processed by Fixed-Low ModCod and ACM ModCod respectively into the same physical frame and transmits it through the same carrier so that the receiving end can perform demodulation and decoding processing after receiving the physical frame to obtain important service data and ordinary service data.

2. The method for transmitting important communication services according to claim 1, characterized in that, S1 includes: The sending end identifies the service flow based on at least one of the source / destination IP address, port number, protocol type, and Differential Service Code Point (DSCP), and distinguishes the service flow into important service data flow and ordinary service data flow.

3. The method for transmitting important communication services according to claim 1, characterized in that, After S1 and before S2, it also includes: The sending end maintains two logically independent sending buffer queues, including a high-reliability queue (HRQ) and a high-performance queue (HEQ). The high-reliability queue is used to buffer important service data streams that have been identified, while the high-performance queue is used to buffer ordinary service data streams.

4. The method for transmitting important communication services according to claim 1, characterized in that, In S4, the frame header of the physical frame contains indication information, which is used to identify the transmission mode of the data within the frame.

5. The method for transmitting important communication services according to claim 4, characterized in that, The indication information includes the length of each region and the ModCod type, wherein the ModCod type includes Fixed-Low ModCod and ACM ModCod.

6. The method for transmitting important communication services according to claim 4, characterized in that, After receiving the physical frame, the receiving end performs demodulation and decoding processes, including: The receiving end parses the indication information in the frame header to obtain the Fixed-Low ModCod data area and the ACM ModCod data area; Demodulation and decoding processes were performed on the Fixed-Low ModCod data area and the ACM ModCod data area, respectively.

7. The method for transmitting important communication services according to claim 6, characterized in that, Demodulation and decoding processes are performed on the Fixed-LowModCod data area and the ACM ModCod data area respectively, including: The data in the Fixed-Low ModCod data area is demodulated and decoded using known, fixed low-order modulation and coding parameters from the transmitter to recover important service data. Demodulate and decode the data in the ACM ModCod data area to restore normal business data.

8. A transmission apparatus for an important communication service, characterized in that, The device includes: The business identification module is configured to identify business flows, divide them into important business data flows and ordinary business data flows, and add priority identifiers to important business data flows. The first encoding module is configured to perform FEC encoding and symbol mapping on important business data streams using a pre-statically configured, fixed low-order modulation and coding scheme, Fixed-LowModCod. The second coding module is configured to dynamically select the current optimal modulation and coding scheme, ACM ModCod, for ordinary service data streams based on real-time feedback of channel state information. The data transmission module is configured to assemble the data processed by Fixed-Low ModCod and ACM ModCod respectively into the same physical frame and transmit it through the same carrier, so that the receiving end can perform demodulation and decoding processing after receiving the physical frame to obtain important service data and ordinary service data.

9. A transmission device for an important communication service, characterized in that, It includes a memory and a processor, wherein the memory stores a computer program and the processor is configured to run the computer program to implement a method for transmitting an important communication service as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, which, when executed by a processor, implements a method for transmitting an important communication service as described in any one of claims 1-7.

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