CN116318376B - Method, device and storage medium for transmitting remote control application data by using virtual channel - Google Patents

Abstract

The application discloses a method, a device and a storage medium for transmitting remote control application data by using a virtual channel, wherein the method comprises the following steps: the packaging layer receives remote control application data corresponding to an application process deployed on a satellite; the packaging layer monitors the bandwidth value and the time slot size of the virtual channel, combines or splits remote control application data according to the monitored bandwidth value and the time slot size of the virtual channel, generates a remote control packet corresponding to the application process, and transmits the remote control packet to the segmentation layer; the segmentation layer receives the remote control packet and generates a remote control segment corresponding to the application process, wherein the remote control segment comprises a receiving address pointer corresponding to the application process; the transmission layer receives the remote control section and generates a remote control transmission frame according to the remote control section; and the transmission layer transmits the remote control transmission frame to the satellite through the virtual channel, wherein the data size of the remote control transmission frame corresponds to the data size which can be transmitted by the virtual channel. Therefore, the technical effects of fully utilizing the virtual channel and improving the utilization rate of the virtual channel can be achieved.

Description

Method, device and storage medium for transmitting remote control application data by using virtual channel

Technical Field

The present invention relates to the field of satellite remote control, and in particular, to a method, an apparatus, and a storage medium for transmitting remote control application data using a virtual channel.

Background

Packet remote control technology has been widely used for data transmission between satellite terrestrial system 200 and satellites. By packet-based remote control, the satellite ground system 200 can transmit remote control application data to the satellite, thereby enabling the update of the application data on the satellite. Wherein fig. 1A shows a hierarchical structure of a subcontracting remote control system. Referring to fig. 1A, the hierarchical structure of the packet remote control system includes a wrapper layer, a segmentation layer, a transport layer, a channel coding layer, and a physical layer. Wherein, in the satellite ground system 200 (i.e. the transmitting end), the packaging layer forms a remote control packet (i.e. a remote control user data unit) after adding the packet header to the front end of the remote control application data. After the remote control packet is segmented or assembled at the segmentation layer, a remote control segment (or remote control transmission frame data unit) is formed by adding a segment header. In the transmission layer, the remote control transmission frame data unit is placed in the data field of the remote control transmission frame, and the front part of the remote control transmission frame data unit is provided with a frame head, and the rear part of the remote control transmission frame data unit is optionally provided with an error control code as a frame tail. At the channel coding layer, a remote control transmission frame is block coded into a series of fixed length code blocks, which have error correction and detection capabilities. And, the block code sequence is repackaged into a remote control channel transmission unit, each of which may contain one or more remote control transmission frames. Finally, at the physical layer, the remote control channel transmission units modulate onto physical channels and transmit to satellites. The satellite (i.e. the receiving end) completes the reverse process of the above operation.

Further, fig. 1B shows a schematic diagram of a packetized remote control data structure handled by each layer. After receiving the remote control transmission frame, the satellite transmits a remote control channel control word (i.e., feedback information) corresponding to the remote control transmission frame to the satellite terrestrial system 200 by means of packet telemetry.

The packaging layer has the main functions of: and adding the packet header to the input remote control application data to form a remote control packet, and transmitting the remote control packet to the segmentation layer. Wherein the header of the remote control packet contains an application process identifier corresponding to the remote control application data.

The main functions of the segmentation layer are: and forming the input remote control package into a remote control section. The segment head of the remote control segment contains a receiving address pointer corresponding to the application process of the satellite.

The main functions of the transport layer are: the remote control section is put into the data field of the remote control transmission frame, and the front of the remote control section is provided with a frame head, and the rear of the remote control section is optionally provided with an error control code as a frame tail, so that the remote control transmission frame is formed. The transport layer then transmits the remote control transport frame to the channel coding layer.

The prior art proposes that the transport layer may divide the physical channel into 64 virtual channels, and then each virtual channel may be divided into 64 receiving address pointers, so that the physical channel may be divided into 4096 transmission paths transmitted from the source to the application process. Wherein the virtual channel enables one physical spatial channel to be shared by remote control application data in a time division multiplexed manner.

However, in the actual application process, since the segmentation layer generates a plurality of remote control segments according to the remote control packet and the transmission layer does not know the size of the data amount that can be transmitted by the virtual channel in advance when generating the remote control transmission frame according to the remote control segments, when the size of the data amount that can be transmitted by the virtual channel is larger than the size of the data amount of the remote control transmission frame, the utilization rate of the virtual channel is reduced; when the size of the data that can be transmitted by the virtual channel is smaller than the size of the data of the remote control transmission frame, the virtual channel is blocked, so that the data transmission is slow.

The publication number is CN114142907A, and the name is a channel screening optimization method and system of communication terminal management equipment. The method comprises the following steps: acquiring wireless radio frequency channel signals of a plurality of ground base stations; virtual channel transmission matrix mapping is carried out on the virtual partition of the ground base station based on the respective data task of the original satellite, and a source coding matrix and a channel coding matrix are obtained; based on the condition that the modulus of the signal transmission capacity of the wireless radio frequency channel is smaller than the maximum receiving power of the virtual partition and the signal-to-noise ratio strength of the wireless radio frequency channel signal is minimum; dynamic screening and channel preliminary screening of the virtual partition are realized; and obtaining the arranged priority according to the dynamic parameters, and combining with other terminals according to the priority to realize channel fine screening.

The publication number is CN114079554A, and is named as a data transmission method, a device, a communication node and a storage medium. The method comprises the steps of determining a virtual channel according to a mapping type of a resource unit, wherein the virtual channel comprises at least one of a first type channel and a second type channel; and mapping the data of the virtual channel into the corresponding resource blocks for transmission according to the mapping relation of each resource block in the range of the virtual channel and the bandwidth, wherein each resource block comprises a set number of resource units.

Aiming at the situation that the data size which can be transmitted by the virtual channel is larger than the data size of the remote control transmission frame in the prior art, the utilization rate of the virtual channel is reduced; when the size of the data that can be transmitted by the virtual channel is smaller than the size of the data of the remote control transmission frame, the virtual channel is blocked, so that the technical problem of slow data transmission is caused, and no effective solution has been proposed at present.

Disclosure of Invention

The embodiment of the disclosure provides a method, a device and a storage medium for transmitting remote control application data by using a virtual channel, which at least solve the problem that the utilization rate of the virtual channel is reduced when the size of data which can be transmitted by the virtual channel is larger than the size of data of a remote control transmission frame in the prior art; when the size of the data volume that can be transmitted by the virtual channel is smaller than the size of the data volume of the remote control transmission frame, the virtual channel is blocked, so that the technical problem of slow data transmission is caused.

According to an aspect of the embodiments of the present disclosure, there is provided a method for transmitting remote control application data using a virtual channel, applied to a ground system, including: the packaging layer receives remote control application data corresponding to an application process deployed on a satellite; the packaging layer monitors the bandwidth value and the time slot size of the virtual channel, combines or splits remote control application data according to the monitored bandwidth value and the time slot size of the virtual channel, generates a remote control packet corresponding to the application process, and transmits the remote control packet to the segmentation layer; the segmentation layer receives the remote control packet and generates a remote control segment corresponding to the application process, wherein the remote control segment comprises a receiving address pointer corresponding to the application process; the transmission layer receives the remote control section and generates a remote control transmission frame according to the remote control section; and the transmission layer transmits the remote control transmission frame to the satellite through the virtual channel, wherein the data size of the remote control transmission frame corresponds to the data size which can be transmitted by the virtual channel.

According to another aspect of the embodiments of the present disclosure, there is also provided a storage medium including a stored program, wherein the method of any one of the above is performed by a processor when the program is run.

According to another aspect of the embodiments of the present disclosure, there is also provided an apparatus for transmitting remote control application data using a virtual channel, including: the remote control application data receiving module is used for receiving remote control application data corresponding to an application process deployed on a satellite; the remote control packet adjusting module is used for monitoring the bandwidth value and the time slot size of the virtual channel, combining or splitting remote control application data according to the monitored bandwidth value and the time slot size of the virtual channel, generating a remote control packet corresponding to the application process, and transmitting the remote control packet to the segmentation layer; the remote control section processing module is used for receiving the remote control packet and generating a remote control section corresponding to the application process, wherein the remote control section comprises a receiving address pointer corresponding to the application process; the remote control transmission frame generation module is used for receiving the remote control section and generating a remote control transmission frame according to the remote control section; and a remote control transmission frame transmission module for transmitting the remote control transmission frame to the satellite through the virtual channel, wherein the data size of the remote control transmission frame corresponds to the data size which can be transmitted by the virtual channel.

According to another aspect of the embodiments of the present disclosure, there is also provided an apparatus for transmitting remote control application data using a virtual channel, including: the packaging layer receives remote control application data corresponding to an application process deployed on a satellite; the packaging layer monitors the bandwidth value and the time slot size of the virtual channel, combines or splits remote control application data according to the monitored bandwidth value and the time slot size of the virtual channel, generates a remote control packet corresponding to the application process, and transmits the remote control packet to the segmentation layer; the segmentation layer receives the remote control packet and generates a remote control segment corresponding to the application process, wherein the remote control segment comprises a receiving address pointer corresponding to the application process; the transmission layer receives the remote control section and generates a remote control transmission frame according to the remote control section; and the transmission layer transmits the remote control transmission frame to the satellite through the virtual channel, wherein the data size of the remote control transmission frame corresponds to the data size which can be transmitted by the virtual channel.

The application provides a method for transmitting remote control application data by using a virtual channel. Firstly, the packaging layer monitors the bandwidth value and the time slot size of the virtual channel, combines or splits the received remote control application data according to the monitored bandwidth value and the time slot size of the virtual channel, generates a remote control packet corresponding to the application process, and transmits the remote control packet to the segmentation layer. Then, the segmentation layer generates a remote control segment according to the received remote control packet. Further, the transmission layer generates a remote control transmission frame according to the remote control section and transmits the remote control transmission frame to the satellite through the virtual channel. It is noted that the size of the data amount of the remote control transmission frame corresponds to the size of the data amount that can be transmitted by the virtual channel.

The size of the data volume of the remote control packet generated by the packaging layer is determined according to the bandwidth value and the time slot size of the virtual channel, so that the size of the data volume of the remote control transmission frame finally generated by the transmission layer corresponds to the size of the data volume which can be transmitted by the virtual channel. And since the data size of the remote control transmission frame corresponds to the data size that can be transmitted by the virtual channels, each virtual channel is just filled and does not overflow. Therefore, the technical effects of fully utilizing the virtual channel and improving the utilization rate of the virtual channel can be achieved. The problem that the utilization rate of the virtual channel is reduced when the size of the data quantity which can be transmitted by the virtual channel is larger than that of a remote control transmission frame in the prior art is solved; when the size of the data volume that can be transmitted by the virtual channel is smaller than the size of the data volume of the remote control transmission frame, the virtual channel is blocked, so that the technical problem of slow data transmission is caused.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this application, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and do not constitute an undue limitation on the disclosure. In the drawings:

FIG. 1A is a schematic diagram of a hierarchical structure of a prior art subcontracting remote control system;

FIG. 1B is a schematic diagram of a prior art packetized remote control data structure for each layer process;

fig. 2 is a block diagram of a hardware structure for transmitting remote control application data using a virtual channel according to a first aspect of embodiment 1 of the present application;

FIG. 3 is a schematic diagram of a satellite remote control system according to a first aspect of embodiment 1 of the present application;

fig. 4A is a schematic system architecture diagram of a subcontracting remote control system according to the first aspect of embodiment 1 of the present application;

FIG. 4B is a schematic diagram of a system architecture of another subcontracting remote control system according to the first aspect of embodiment 1 of the present application;

FIG. 5 is a flow chart of a method for transmitting remote control application data using a virtual channel according to a first aspect of embodiment 1 of the present application;

FIG. 6A is a schematic diagram of a remote control packet generated before the data size of each remote control packet is not adjusted by the packaging layer according to the first aspect of embodiment 1 of the present application;

FIG. 6B is a schematic diagram of a remote control packet generated after the data size of each remote control packet is adjusted by the packaging layer according to the first aspect of embodiment 1 of the present application;

FIG. 7A is a schematic diagram of a satellite terrestrial system 200 according to the first aspect of embodiment 1 of the present application transmitting to a satellite a remote control transmission frame corresponding to a remote control packet prior to an unregulated condition;

fig. 7B is a schematic diagram of a satellite terrestrial system 200 according to the first aspect of embodiment 1 of the present application transmitting a remote control transmission frame corresponding to the adjusted remote control packet to a satellite;

fig. 8A is a schematic diagram of a virtual channel slot size before unadjusted according to the first aspect of embodiment 1 of the present application;

fig. 8B is a schematic diagram of a slot size of an adjusted virtual channel according to the first aspect of embodiment 1 of the present application;

fig. 9 is a schematic diagram of an apparatus for transmitting remote control application data using a virtual channel according to the first aspect of embodiment 2 of the present application; and

fig. 10 is a schematic diagram of an apparatus for transmitting remote control application data using a virtual channel according to the first aspect of embodiment 3 of the present application.

Detailed Description

In order to better understand the technical solutions of the present disclosure, the following description will clearly and completely describe the technical solutions of the embodiments of the present disclosure with reference to the drawings in the embodiments of the present disclosure. It will be apparent that the described embodiments are merely embodiments of a portion, but not all, of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, based on the embodiments in this disclosure, shall fall within the scope of the present disclosure.

It should be noted that the terms "first," "second," and the like in the description and claims of the present disclosure and in the foregoing figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the disclosure described herein may be capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Example 1

According to the present embodiment, there is provided an embodiment of a method of transmitting remote control application data using a virtual channel, it being noted that the steps shown in the flowchart of the drawings may be performed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

The method embodiments provided by the present embodiments may be performed in a satellite ground system 200. Fig. 2 shows a block diagram of a hardware architecture of a computing device for a method of transmitting remote control application data using a virtual channel. As shown in fig. 2, the computing device may include one or more processors (which may include, but are not limited to, a microprocessor MCU, a processing device such as a programmable logic device FPGA), memory for storing data, transmission means for communication functions, and input/output interfaces. Wherein the memory, the transmission device and the input/output interface are connected with the processor through a bus. It will be appreciated by those of ordinary skill in the art that the configuration shown in fig. 2 is merely illustrative and is not intended to limit the configuration of the electronic device described above. For example, the computing device may also include more or fewer components than shown in FIG. 2, or have a different configuration than shown in FIG. 2.

It should be noted that the one or more processors and/or other data processing circuits described above may be referred to herein generally as "data processing circuits. The data processing circuit may be embodied in whole or in part in software, hardware, firmware, or any other combination. Furthermore, the data processing circuitry may be a single stand-alone processing module, or incorporated in whole or in part into any of the other elements in the computing device. As referred to in the embodiments of the present disclosure, the data processing circuit acts as a processor control (e.g., selection of the variable resistance termination path to interface with).

The memory may be used to store software programs and modules of application software, such as a program instruction/data storage device corresponding to the method for adjusting timeslots of virtual channels based on the segmentation layer in the embodiments of the present disclosure, and the processor executes the software programs and modules stored in the memory, thereby performing various functional applications and data processing, that is, implementing the method for adjusting timeslots of virtual channels based on the segmentation layer of the application program. The memory may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory. In some examples, the memory may further include memory remotely located with respect to the processor, which may be connected to the computing device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The transmission means is used for receiving or transmitting data via a network. Specific examples of the network described above may include a wireless network provided by a communications provider of the computing device. In one example, the transmission means comprises a network adapter (Network Interface Controller, NIC) connectable to other network devices via the base station to communicate with the internet. In one example, the transmission device may be a Radio Frequency (RF) module, which is used to communicate with the internet wirelessly.

It should be noted herein that in some alternative embodiments, the computing device shown in FIG. 2 described above may include hardware elements (including circuitry), software elements (including computer code stored on a computer-readable medium), or a combination of both hardware and software elements. It should be noted that fig. 2 is only one example of a particular specific example and is intended to illustrate the types of components that may be present in the computing devices described above.

Fig. 3 illustrates a satellite remote control system according to an embodiment of the present application. Referring to fig. 3, the system includes: the satellite ground system 200 and the satellite 100, wherein the satellite ground system 200 transmits remote control application data corresponding to an application process deployed on the satellite 100 to the satellite 100 through a communication channel between the satellite ground system 200 and the satellite 100 by means of packet remote control. In addition, the satellite 100 receives remote control application data corresponding to the application procedure transmitted from the satellite ground system 200 and returns information to the satellite ground system 200 by means of packetized telemetry. Wherein both the satellite ground system 200 and the computing device of the satellite 100 are adapted for the hardware architecture shown in fig. 2.

Fig. 4A shows a schematic system architecture of a subcontracting remote control system according to an embodiment of the present application. Referring to FIG. 4A, where IS_0 represents source 0, IS_1 represents source 1, and so on, IS_n represents source n. The source is_0 to source is_n send remote control application data to the packaging layer in the satellite ground system 200 through the application data interface. Then, a first monitoring module in the packaging layer monitors the real-time change of the bandwidth and the time slot size of the virtual channel, and transmits the monitored bandwidth value and the time slot size of the virtual channel to a remote control packet calculation module. The remote control packet calculation module calculates the data amount of remote control application data corresponding to each virtual channel (i.e., the data amount size when the virtual channel is just filled) according to the bandwidth value and the slot size of each virtual channel. Further, after receiving the data volume corresponding to each virtual channel calculated by the remote control packet calculation module, the remote control packet adjustment module generates a remote control packet according to the data volume corresponding to each virtual channel, and transmits the remote control packet to the segmentation layer.

Fig. 4B illustrates a system architecture diagram of another subcontracting remote control system according to embodiments of the present application. Referring to fig. 4B, the source is_0 to the source is_n send remote control application data to the packaging layer in the satellite ground system 200 through the application data interface. The wrapper layer then encapsulates the remote control application data into a remote control packet and transmits the remote control packet to the segmentation layer. The segmentation layer generates a remote control segment according to the remote control packet and transmits the remote control segment to the transmission layer. The transmission layer generates a remote control transmission frame according to the remote control section, and in addition, a second monitoring module in the transmission layer monitors the real-time change of the bandwidth and transmits the monitored bandwidth value to the channel calculation module. The channel calculation module calculates a time required for transmitting the remote control transmission frame (i.e., a time required for transmitting the remote control application data corresponding to the remote control transmission frame) based on the data amount of the remote control application data and the real-time bandwidth value. Further, after the channel adjusting module receives the time required for transmitting the remote control transmission frame calculated by the channel calculating module, the time slot size of the virtual channel is adjusted according to the remote control transmission frame and the time required for transmitting the remote control transmission frame, and the remote control transmission frame is transmitted to the channel coding layer.

In the above-described operating environment, according to a first aspect of the present embodiment, there is provided a method of transmitting remote control application data using a virtual channel, the method being implemented by a processor shown in fig. 2. Fig. 5 shows a schematic flow chart of the method, and referring to fig. 5, the method includes:

s502: the packaging layer receives remote control application data corresponding to an application process deployed on a satellite;

s504: the packaging layer monitors the bandwidth value and the time slot size of the virtual channel, combines or splits remote control application data according to the monitored bandwidth value and the time slot size of the virtual channel, generates a remote control packet corresponding to the application process, and transmits the remote control packet to the segmentation layer;

s506: the segmentation layer receives the remote control packet and generates a remote control segment corresponding to the application process, wherein the remote control segment comprises a receiving address pointer corresponding to the application process;

s508: the transmission layer receives the remote control section and generates a remote control transmission frame according to the remote control section; and

s510: the transmission layer transmits the remote control transmission frame to the satellite through the virtual channel, wherein the data size of the remote control transmission frame corresponds to the data size which can be transmitted by the virtual channel.

Specifically, referring to fig. 4A, an application data interface IS disposed in the satellite ground system 200, and the application data interface IS respectively connected with the source is_0 to the source is_n in a communication manner, and receives remote control application data sent by the source is_0 to the source is_n. And then, the application data interface transmits the received remote control application data sent by the information sources IS_0-IS_n to a packaging layer in the packet remote control system.

First, the wrapper layer receives remote control application data corresponding to an application process deployed at the satellite 100 (S502).

Then, a first monitoring module in the wrapper layer monitors the bandwidth value and the time slot size of the virtual channel, combines or splits remote control application data according to the monitored bandwidth value and the time slot size of the virtual channel, generates a remote control packet corresponding to the application process, and transmits the remote control packet to the segmentation layer (S504). Wherein, the following table 1 shows a schematic diagram of a data format of a remote control packet:

TABLE 1

As is clear from table 1, when remote control packets corresponding to application processes are generated, the data amounts of remote control application data in the respective remote control packets are different because the data amounts of the remote control application data corresponding to the application processes are different. Further, although the segmentation layer divides a long remote control packet into several shorter remote control segments, the segmentation layer does not consider the data size that can be transmitted by the virtual channel when generating the remote control segments according to the remote control packet, so the segmentation layer transmits the plurality of remote control segments to the transmission layer, and the data size of a remote control transmission frame generated by the transmission layer according to the remote control segments may be smaller than the data size that can be transmitted by the virtual channel or larger than the data size that can be transmitted by the virtual channel.

Therefore, if the data size of the remote control transmission frame is required to correspond to the data size that can be transmitted by the virtual channel, the data size of the remote control packet corresponding to the remote control transmission frame needs to be calculated in advance when generating the remote control packet. First, a first monitoring module in the packaging layer monitors the bandwidth value and the time slot size of the virtual channel, and transmits the bandwidth value and the time slot size of the virtual channel to a remote control packet calculation module. And then, a remote control packet calculation module in the packaging layer calculates the data size which can be transmitted by each virtual channel according to the bandwidth value and the time slot size of the virtual channel, and transmits the calculated data size which can be transmitted by each virtual channel to a remote control packet adjustment module. And finally, the remote control packet adjusting module combines or splits remote control application data according to the received data values which can be transmitted by each virtual channel, so as to generate a remote control packet.

Fig. 6A is a schematic diagram of a remote control packet generated before the data size of each remote control packet is not adjusted by the packaging layer according to an embodiment of the present application. Fig. 6B is a schematic diagram of a remote control packet generated after the packaging layer adjusts the data size of each remote control packet according to an embodiment of the present application. Where tq_0 represents remote control packet 0, tq_1 represents remote control packet 1, and tq_2 represents remote control packet 2.Ts_0 represents remote control transmission frame 0, ts_1 represents remote control transmission frame 1, and ts_2 represents remote control transmission frame 2.Vc_0 represents virtual channel 0, vc_1 represents virtual channel 1, and vc_2 represents virtual channel 2.

Referring to fig. 6A, the remote control packet calculation module in the wrapper layer does not calculate the size of the data amount that can be transmitted by each virtual channel, and the remote control packet adjustment module does not generate a remote control packet according to the size of the data amount that can be transmitted by each virtual channel, before the data amount of the remote control packet tq_1 is maximum, the data amount of the remote control packet tq_0 is next, and the data amount of the remote control packet tq_2 is minimum.

Referring to fig. 6B, the remote control packet calculation module in the wrapper layer calculates the data size that each virtual channel can transmit, and the remote control packet adjustment module generates a remote control packet according to the data size that each virtual channel can transmit, where the data size of the remote control packet tq_2 is the largest, and the data size of the remote control packet tq_1 is the second smallest.

As can be seen from comparing fig. 6A and 6B, in the case that the data size of each remote control packet is not adjusted, so as to generate a remote control packet, if the transmission layer generates a remote control transmission frame ts_0, a remote control transmission frame ts_1, and a remote control transmission frame ts_2 according to the remote control packet tq_0, the remote control packet tq_1, and the remote control packet tq_2, respectively, the virtual channel vc_0 corresponding to the remote control transmission frame ts_0 may be blocked, thereby slowing down data transmission; the virtual channel vc_1 corresponding to the remote control transmission frame ts_1 may be blocked, thereby causing slow data transmission; the virtual channel vc_2 corresponding to the remote control transmission frame ts_2 may not be filled, resulting in a reduced utilization rate.

The data amount of the remote control packet tq_0, the data amount of the remote control packet tq_1 and the data amount of the remote control packet tq_2 shown in fig. 6B are generated after being adjusted by the wrapping layer, so that the transmission layer can fully utilize the virtual channel and also can ensure the data transmission rate according to the adjusted data amount of the remote control transmission frame ts_0, the remote control transmission frame ts_1 and the remote control transmission frame ts_2 generated by the remote control packet tq_0, the remote control packet tq_1 and the remote control packet tq_2, which is exactly the same as the data amount transmitted by the virtual channel vc_0, the virtual channel vc_1 and the virtual channel vc_2.

Further, the segmentation layer generates a remote control segment corresponding to the application process after receiving the remote control packet (S506). And wherein the segment header of the remote control segment contains a received address pointer corresponding to the application process. Table 2 is a table of correspondence of source-application process identification-received address pointers. Where app_0 denotes application 0, app_1 denotes application 1, app_2 denotes application 2, and so on, app_n denotes application n. Apid_0 represents application identification 0, apid_1 represents application identification 1, apid_2 represents application identification 2, and so on, apid_n represents application identification n. ADD_0 represents the received address pointer corresponding to source IS_0, ADD_1 represents the received address pointer corresponding to source IS_1, and so on, ADD_n represents the received address pointer corresponding to source IS_n. Referring to table 2, is_0 corresponds to app_0, app_0 corresponds to apid_0, apid_0 corresponds to add_0, and so on, is_n corresponds to app_n, app_n corresponds to apid_n, and apid_n corresponds to add_n.

TABLE 2

Then, the transmission layer receives the remote control section transmitted by the segmentation layer and generates a remote control transmission frame according to the remote control section (S508). Specifically, the transmission layer adds a frame header to the header of each received remote control segment, thereby generating a remote control transmission frame corresponding to the remote control segment.

Finally, the transport layer transmits the remote control transport frame to the satellite through the virtual channel (S510). The data size of the remote control transmission frame corresponding to each remote control packet corresponds to the data size that can be transmitted by the virtual channel. Specifically, fig. 7A is a schematic diagram of a satellite terrestrial system 200 according to an embodiment of the present application transmitting a remote control transmission frame corresponding to a remote control packet before being unregulated to a satellite 100. Fig. 7B is a schematic diagram of a satellite terrestrial system 200 transmitting a remote control transmission frame corresponding to an adjusted remote control packet to a satellite 100 according to an embodiment of the present application. Referring to fig. 7A and 7B, the time slot sizes of the virtual channels vc_0 to vc_2 are different, and the data sizes that can be transmitted are also different. For example, the amount of data that can be transmitted by virtual channel vc_1 is the largest, the amount of data that can be transmitted by virtual channel vc_0 is the next smallest, and the amount of data that can be transmitted by virtual channel vc_2 is the smallest.

In fig. 7A, the amount of data of the remote control transmission frame ts_2 corresponding to the virtual channel vc_2 is the largest, the amount of data of the remote control transmission frame ts_0 corresponding to the virtual channel vc_0 is the same as the amount of data of the remote control transmission frame ts_1 corresponding to the virtual channel vc_1, and is smaller than the amount of data corresponding to the remote control transmission frame ts_2.

In fig. 7B, however, since the remote control packet tq_0, the remote control packet tq_1, and the remote control packet tq_2 have been adjusted, the amount of data of the remote control transmission frame ts_1 corresponding to the virtual channel vc_1 is the largest, the amount of data of the remote control transmission frame ts_0 corresponding to the virtual channel vc_0 is the second largest, and the amount of data of the remote control transmission frame ts_2 corresponding to the virtual channel vc_2 is the smallest. The data size of the remote control transmission frame ts_0 generated after adjustment is the same as the data size that can be transmitted by the virtual channel vc_1, the data size of the remote control transmission frame ts_1 generated after adjustment is the same as the data size that can be transmitted by the virtual channel vc_1, and the data size of the remote control transmission frame ts_2 generated after adjustment is the same as the data size that can be transmitted by the virtual channel vc_2.

As described in the background art, in the actual application process, since the segmentation layer generates a plurality of remote control segments according to the remote control packet, and the transmission layer does not know the size of the data volume that can be transmitted by the virtual channel in advance when generating the remote control transmission frame according to the remote control segments, when the size of the data volume that can be transmitted by the virtual channel is larger than the size of the data volume of the remote control transmission frame, the utilization rate of the virtual channel is reduced; when the size of the data that can be transmitted by the virtual channel is smaller than the size of the data of the remote control transmission frame, the virtual channel is blocked, so that the data transmission is slow.

In view of this, since the size of the data amount of the remote control packet generated by the wrapper layer is determined according to the bandwidth value and the slot size of the virtual channel, the data amount of the remote control transmission frame finally generated by the transmission layer corresponds to the data amount that can be transmitted by the virtual channel. And since the data size of the remote control transmission frame corresponds to the data size that can be transmitted by the virtual channels, each virtual channel is just filled and does not overflow. Therefore, the technical effects of fully utilizing the virtual channel and improving the utilization rate of the virtual channel can be achieved. The problem that the utilization rate of the virtual channel is reduced when the size of the data quantity which can be transmitted by the virtual channel is larger than that of a remote control transmission frame in the prior art is solved; when the size of the data volume that can be transmitted by the virtual channel is smaller than the size of the data volume of the remote control transmission frame, the virtual channel is blocked, so that the technical problem of slow data transmission is caused.

Optionally, the packaging layer monitors the bandwidth value and the time slot size of the virtual channel, and combines or splits remote control application data according to the monitored bandwidth value and the time slot size of the virtual channel, so as to generate a remote control packet corresponding to the application process, which includes: the packaging layer monitors and collects a first bandwidth value of the virtual channel and the time slot size of each virtual channel; the packaging layer calculates the size of data quantity which can be transmitted by each virtual channel according to the first bandwidth value and the time slot size of each virtual channel; and the packaging layer combines or splits the remote control application data according to the size of the data quantity which can be transmitted by each virtual channel to generate a remote control packet.

Specifically, first, a first monitoring module in the wrapper layer monitors real-time bandwidth values of virtual channels and slot sizes of the respective virtual channels. For example, the first monitoring module monitors that the real-time bandwidth value of the virtual channel is 1000Mbps, the time slot size of the virtual channel vc_0 is 0.001s, the time slot size of the virtual channel vc_1 is 0.05s, and the time slot size of the virtual channel vc_2 is 0.03s.

And then, the first monitoring module transmits the real-time bandwidth value of the monitored virtual channel and the time slot size of each virtual channel to the remote control packet calculation module, and the remote control packet calculation module calculates the data size capable of being transmitted by each virtual channel according to the real-time bandwidth value of the virtual channel and the time slot size of each virtual channel. The calculation formula of the data size that can be transmitted by each virtual channel is as follows:

(equation 1)

Wherein Q represents the amount of data that can be transmitted by the virtual channel, B represents the real-time bandwidth value of the virtual channel, and T represents the time slot of the virtual channel.

For example, the remote control packet calculation module calculates that the data size that can be transmitted by the virtual channel vc_0 is 1024kb, the data size that can be transmitted by the virtual channel vc_1 is 51200kb, and the data size that can be transmitted by the virtual channel vc_2 is 30720kb.

Further, the remote control packet calculation module transmits the calculation result to the remote control packet adjustment module, and the remote control packet adjustment module combines or splits remote control application data according to the size of the data volume which can be transmitted by each virtual channel, so as to generate a remote control packet. For example, the remote control packet calculation module has calculated that the data size capable of being transmitted by the virtual channel vc_0 is 1024kb, the data size capable of being transmitted by the virtual channel vc_1 is 51200kb, and the data size capable of being transmitted by the virtual channel vc_2 is 30720kb, and then the remote control packet adjustment module generates a remote control packet according to the calculation result.

It should be noted that, since the size of the data volume that can be transmitted by the virtual channel is the same as the size of the data volume of the remote control transmission frame, the size of the data volume of the remote control packet needs to be subtracted by the data volumes of the frame header and the segment header.

Therefore, by generating the remote control packet corresponding to the data size which can be transmitted by the virtual channel, the technical effect of fully utilizing the virtual channel is achieved.

Optionally, the method further comprises: the packaging layer is provided with a cache area, wherein the cache area is configured for caching remote control application data.

Specifically, referring to fig. 4A, a buffer area is further provided in the packaging layer, where the buffer area is configured to buffer remote control application data. That is, when the remote control application data received by the wrapper layer is too much, so that the virtual channel may be blocked, the wrapper layer may store the excessive remote control application data in the buffer area, so as to ensure that the virtual channel is not blocked.

Optionally, the method further comprises: the transmission layer receives the remote control section and generates a remote control transmission frame according to the remote control section; the transmission layer monitors and collects a second bandwidth value of the virtual channel in real time; the transmission layer calculates the time required for transmitting the remote control transmission frame according to the second bandwidth value and the data size of the remote control transmission frame; and the transmission layer adjusts the time slot size of the virtual channel according to the calculated time required for transmitting the remote control transmission frame, and transmits the remote control transmission frame to the satellite through the virtual channel.

Specifically, first, a second monitoring module in the transport layer monitors the real-time bandwidth value of the virtual channel. For example, the second monitoring module monitors the real-time bandwidth value of the virtual channel to be 1000Mbps.

And then, the second monitoring module transmits the real-time bandwidth value of the monitored virtual channel to the channel calculation module. The channel calculation module calculates the time required for transmitting the remote control transmission frame according to the real-time bandwidth value of the virtual channel and the data size of the remote control transmission frame. For example, the data amount of the remote control transmission frame is 30720kb. The channel calculation module can calculate that the time required for transmitting the remote control transmission frame is 0.03s according to the above formula 1.

Further, the channel adjusting module receives the time required for transmitting the remote control transmission frame calculated by the channel calculating module, and adjusts the time slot size of the virtual channel according to the calculation result. For example, fig. 8A shows a schematic diagram of a slot size of a virtual channel before being unregulated according to an embodiment of the present application. Fig. 8B illustrates a schematic diagram of a slot size of an adjusted virtual channel according to an embodiment of the present application. Referring to fig. 8A and 8B, before the channel adjustment module does not adjust the time slots of the virtual channels, the time slots of the virtual channels vc_0, vc_1, and vc_2 are the same. And after the adjustment of the virtual channels vc_0, vc_1 and vc_2, the time slot size of the virtual channel vc_2 is larger than that of the virtual channel vc_1 and larger than that of the virtual channel vc_0. And the time slot size of the adjusted virtual channel corresponds to the data size of the remote control transmission frame.

For example, the time slot size of the virtual channel is 0.01s before the channel adjustment module does not adjust the time slot of the virtual channel, so that the virtual channel may be blocked when transmitting a remote control transmission frame with a data size of 30720 kb. After the time slot of the virtual channel is regulated by the channel regulating module, the time slot size of the virtual channel is 0.03s, so that the transmission rate of the remote control transmission frame transmitted by the virtual channel can be ensured. For another example, the time slot size of the virtual channel is 0.04s before the channel adjustment module does not adjust the time slot of the virtual channel, so that the virtual channel is not utilized enough when the virtual channel transmits a remote control transmission frame with the data size of 30720 kb. After the time slot of the virtual channel is regulated by the channel regulating module, the time slot size of the virtual channel is 0.03s, so that the utilization rate of the virtual channel can be ensured.

Therefore, the time required for transmitting the remote control transmission frame is calculated according to the data size and the bandwidth value of the remote control transmission frame, and the operation of the time slot of the virtual channel is regulated according to the calculation result, so that the technical effects of fully utilizing the virtual channel and ensuring the transmission rate are achieved.

Further, referring to fig. 2, according to a second aspect of the present embodiment, there is provided a storage medium. The storage medium includes a stored program, wherein the method of any one of the above is performed by a processor when the program is run.

Therefore, the embodiment of the application can achieve the technical effects of fully utilizing the virtual channel and improving the utilization rate of the virtual channel. The problem that the utilization rate of the virtual channel is reduced when the size of the data quantity which can be transmitted by the virtual channel is larger than that of a remote control transmission frame in the prior art is solved; when the size of the data volume that can be transmitted by the virtual channel is smaller than the size of the data volume of the remote control transmission frame, the virtual channel is blocked, so that the technical problem of slow data transmission is caused.

It should be noted that, for simplicity of description, the foregoing method embodiments are all described as a series of acts, but it should be understood by those skilled in the art that the present invention is not limited by the order of acts described, as some steps may be performed in other orders or concurrently in accordance with the present invention. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present invention.

From the description of the above embodiments, it will be clear to a person skilled in the art that the method according to the above embodiments may be implemented by means of software plus the necessary general hardware platform, but of course also by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present invention.

Example 2

Fig. 9 shows an apparatus 900 for transmitting remote control application data using a virtual channel according to the first aspect of the present embodiment, the apparatus 900 corresponding to the method according to the first aspect of embodiment 1. Referring to fig. 9, the apparatus 900 includes: a remote control application data receiving module 910, configured to receive remote control application data corresponding to an application process deployed in a satellite; the remote control packet adjusting module 920 is configured to monitor a bandwidth value and a time slot size of a virtual channel by the packaging layer, combine or split remote control application data according to the monitored bandwidth value and the time slot size of the virtual channel, generate a remote control packet corresponding to an application process, and transmit the remote control packet to the segmentation layer; a remote control segment processing module 930, configured to receive the remote control packet and generate a remote control segment corresponding to the application process, where the remote control segment includes a receiving address pointer corresponding to the application process; a remote control transmission frame generation module 940 for receiving the remote control section and generating a remote control transmission frame according to the remote control section; and a remote control transmission frame transmission module 950 for transmitting the remote control transmission frame to the satellite through the virtual channel, wherein the size of the data amount of the remote control transmission frame corresponds to the size of the data amount that can be transmitted by the virtual channel.

Optionally, the remote control packet adjustment module 920 includes: the first bandwidth monitoring module is used for monitoring and acquiring a first bandwidth value of the virtual channel and the time slot size of each virtual channel; the remote control packet calculation module is used for calculating the data volume corresponding to each virtual channel according to the first bandwidth value and the time slot size of each virtual channel; and the remote control packet adjusting module is used for combining or splitting remote control application data according to the data volume corresponding to each virtual channel to generate a remote control packet.

Optionally, the apparatus 900 further includes: the data storage module is used for setting a cache area, wherein the cache area is configured for caching remote control application data.

Optionally, the apparatus 900 further includes: the remote control transmission frame generation module is used for receiving the remote control section and generating a remote control transmission frame according to the remote control section; the second bandwidth monitoring module is used for monitoring and acquiring a second bandwidth value of the virtual channel in real time; the channel calculation module is used for calculating the time required by transmitting the remote control transmission frame according to the second bandwidth value and the data size of the remote control transmission frame; and the channel adjusting module is used for adjusting the time slot size of the virtual channel according to the calculated time required by the transmission of the remote control transmission frame and transmitting the remote control transmission frame to the satellite through the virtual channel.

Therefore, the embodiment of the application can achieve the technical effects of fully utilizing the virtual channel and improving the utilization rate of the virtual channel. The problem that the utilization rate of the virtual channel is reduced when the size of the data quantity which can be transmitted by the virtual channel is larger than that of a remote control transmission frame in the prior art is solved; when the size of the data volume that can be transmitted by the virtual channel is smaller than the size of the data volume of the remote control transmission frame, the virtual channel is blocked, so that the technical problem of slow data transmission is caused.

Example 3

Fig. 10 shows an apparatus 1000 for transmitting remote control application data using a virtual channel according to the first aspect of the present embodiment, the apparatus 1000 corresponding to the method according to the first aspect of embodiment 1. Referring to fig. 10, the apparatus 1000 includes: a processor 1010; and a memory 1020 coupled to the processor 1010 for providing instructions to the processor 1010 for processing the following processing steps: the packaging layer receives remote control application data corresponding to an application process deployed on a satellite; the packaging layer monitors the bandwidth value and the time slot size of the virtual channel, combines or splits remote control application data according to the monitored bandwidth value and the time slot size of the virtual channel, generates a remote control packet corresponding to the application process, and transmits the remote control packet to the segmentation layer; the segmentation layer receives a remote control packet and generates a remote control segment corresponding to an application process, wherein the remote control segment comprises a receiving address pointer corresponding to the application process; the transmission layer receives the remote control section and generates a remote control transmission frame according to the remote control section; and the transmission layer transmits the remote control transmission frame to the satellite through the virtual channel, wherein the data size of the remote control transmission frame corresponds to the data size which can be transmitted by the virtual channel.

Therefore, the embodiment of the application can achieve the technical effects of fully utilizing the virtual channel and improving the utilization rate of the virtual channel. The problem that the utilization rate of the virtual channel is reduced when the size of the data quantity which can be transmitted by the virtual channel is larger than that of a remote control transmission frame in the prior art is solved; when the size of the data volume that can be transmitted by the virtual channel is smaller than the size of the data volume of the remote control transmission frame, the virtual channel is blocked, so that the technical problem of slow data transmission is caused.

The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.

In the foregoing embodiments of the present invention, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.

In the several embodiments provided in the present application, it should be understood that the disclosed technology content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, such as the division of the units, is merely a logical function division, and may be implemented in another manner, for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims (8)

1. A method for transmitting remote control application data by using a virtual channel, which is applied to a satellite ground system, comprising:

the packaging layer receives remote control application data corresponding to an application process deployed on a satellite;

the packaging layer monitors the bandwidth value and the time slot size of the virtual channel, combines or splits the remote control application data according to the monitored bandwidth value and the time slot size of the virtual channel, generates a remote control packet corresponding to the application process, and transmits the remote control packet to the segmentation layer;

the segmentation layer receives the remote control packet and generates a remote control segment corresponding to the application process, wherein the remote control segment comprises a receiving address pointer corresponding to the application process;

the transmission layer receives the remote control section and generates a remote control transmission frame according to the remote control section;

the transmission layer transmits the remote control transmission frame to the satellite through the virtual channel, wherein the data size of the remote control transmission frame corresponds to the data size capable of being transmitted by the virtual channel, and the method comprises the steps of

The packaging layer monitors the bandwidth value and the time slot size of the virtual channel, combines or splits the remote control application data according to the monitored bandwidth value and the time slot size of the virtual channel, and generates a remote control packet corresponding to the application process, which comprises the following steps:

the packaging layer monitors and collects a first bandwidth value of the virtual channel and the time slot size of each virtual channel;

the packaging layer calculates the size of data quantity which can be transmitted by each virtual channel according to the first bandwidth value and the time slot size of each virtual channel; and

and the packaging layer combines or splits the remote control application data according to the size of the data quantity which can be transmitted by each virtual channel to generate the remote control packet.

2. The method as recited in claim 1, further comprising:

the packaging layer is provided with a cache area, wherein the cache area is configured to cache the remote control application data.

3. The method as recited in claim 1, further comprising:

the transmission layer receives the remote control section and generates the remote control transmission frame according to the remote control section;

the transmission layer monitors and collects the second bandwidth value of the virtual channel in real time;

The transmission layer calculates the time required for transmitting the remote control transmission frame according to the second bandwidth value and the data volume of the remote control transmission frame; and

and the transmission layer adjusts the time slot size of the virtual channel according to the calculated time required for transmitting the remote control transmission frame, and transmits the remote control transmission frame to a satellite through the virtual channel.

4. A storage medium comprising a stored program, wherein the method of any one of claims 1 to 3 is performed by a processor when the program is run.

5. An apparatus for transmitting remote control application data using a virtual channel, comprising:

the remote control application data receiving module is used for receiving remote control application data corresponding to an application process deployed on a satellite;

the remote control packet adjusting module is used for monitoring the bandwidth value and the time slot size of the virtual channel, combining or splitting the remote control application data according to the monitored bandwidth value and the time slot size of the virtual channel, generating a remote control packet corresponding to the application process, and transmitting the remote control packet to the segmentation layer;

the remote control section processing module is used for receiving the remote control packet and generating a remote control section corresponding to the application process, wherein the remote control section comprises a receiving address pointer corresponding to the application process;

The remote control transmission frame generation module is used for receiving the remote control section and generating a remote control transmission frame according to the remote control section;

a remote control transmission frame transmission module for transmitting the remote control transmission frame to a satellite through the virtual channel, wherein the data size of the remote control transmission frame corresponds to the data size capable of being transmitted by the virtual channel, and wherein

The remote control package adjusting module comprises:

the first bandwidth monitoring module is used for monitoring and acquiring a first bandwidth value of the virtual channel and the time slot size of each virtual channel;

the remote control packet calculation module is used for calculating the data volume corresponding to each virtual channel according to the first bandwidth value and the size of each virtual channel time slot; and

and the remote control packet adjusting module is used for combining or splitting the remote control application data according to the data volume corresponding to each virtual channel to generate the remote control packet.

6. The apparatus of claim 5, wherein the apparatus further comprises:

and the data storage module is used for setting a cache area, wherein the cache area is configured to cache the remote control application data.

7. The apparatus of claim 5, wherein the apparatus further comprises:

The remote control transmission frame generation module is used for receiving the remote control section and generating the remote control transmission frame according to the remote control section;

the second bandwidth monitoring module is used for monitoring and acquiring a second bandwidth value of the virtual channel in real time;

a channel calculation module, configured to calculate, according to the second bandwidth value and the data size of the remote control transmission frame, a time required for transmitting the remote control transmission frame; and

and the channel adjusting module is used for adjusting the time slot size of the virtual channel according to the calculated time required for transmitting the remote control transmission frame and transmitting the remote control transmission frame to a satellite through the virtual channel.

8. An apparatus for transmitting remote control application data using a virtual channel, comprising:

a processor; and

a memory, coupled to the processor, for providing instructions to the processor to process the following processing steps:

the packaging layer receives remote control application data corresponding to an application process deployed on a satellite;

the packaging layer monitors the bandwidth value and the time slot size of the virtual channel, combines or splits the remote control application data according to the monitored bandwidth value and the time slot size of the virtual channel, generates a remote control packet corresponding to the application process, and transmits the remote control packet to the segmentation layer;

The segmentation layer receives the remote control packet and generates a remote control segment corresponding to the application process, wherein the remote control segment comprises a receiving address pointer corresponding to the application process;

the transmission layer receives the remote control section and generates a remote control transmission frame according to the remote control section;

the transmission layer transmits the remote control transmission frame to the satellite through the virtual channel, wherein the data size of the remote control transmission frame corresponds to the data size capable of being transmitted by the virtual channel, and the method comprises the steps of

The packaging layer monitors the bandwidth value and the time slot size of the virtual channel, combines or splits the remote control application data according to the monitored bandwidth value and the time slot size of the virtual channel, and generates a remote control packet corresponding to the application process, which comprises the following steps:

the packaging layer monitors and collects a first bandwidth value of the virtual channel and the time slot size of each virtual channel;

the packaging layer calculates the size of data quantity which can be transmitted by each virtual channel according to the first bandwidth value and the time slot size of each virtual channel; and

and the packaging layer combines or splits the remote control application data according to the size of the data quantity which can be transmitted by each virtual channel to generate the remote control packet.