CN116112065B - File sharing method, system, device and storage medium based on satellite communication - Google Patents
File sharing method, system, device and storage medium based on satellite communication Download PDFInfo
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- CN116112065B CN116112065B CN202310371362.0A CN202310371362A CN116112065B CN 116112065 B CN116112065 B CN 116112065B CN 202310371362 A CN202310371362 A CN 202310371362A CN 116112065 B CN116112065 B CN 116112065B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18513—Transmission in a satellite or space-based system
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The application discloses a file sharing method, a system, a device and a storage medium based on satellite communication, comprising the following steps: when entering the beam coverage of a first satellite, the first terminal equipment establishes a first user link with the first satellite; the first terminal equipment responds to an instruction of downloading the target file resource by a user, and determines source terminal equipment corresponding to the target file resource from a plurality of second terminal equipment according to the locally stored network file resource information; the first terminal equipment sends an acquisition request corresponding to the target file resource to a first satellite through a first user link, and the first satellite sends the acquisition request to the source terminal equipment through a second user link; and the first satellite acquires file data of the target file resource from the source terminal device through the second user link, and sends the file data to the first terminal device through the first user link. Therefore, the technical effects of reducing the occupation of resources and improving the file transmission efficiency can be achieved.
Description
Technical Field
The present disclosure relates to the field of satellite communications technologies, and in particular, to a method, a system, an apparatus, and a storage medium for file sharing based on satellite communications.
Background
With the continuous development of science and technology, the development of multi-user shared file resources is also more and more rapid. Because multi-user sharing of file resources can help users acquire desired files, sharing techniques of file resources have been widely used. In particular, file sharing tools such as BT seeds and thunderbolt downloads offer great convenience to users.
Since in the existing file sharing technology, the terminal device needs to share the file through the internet and/or acquire the shared file, if the terminal device sharing the file is in a field area which does not cover the internet yet, the file cannot be shared with other terminal devices. Or if the terminal equipment is in a field area which does not cover the Internet, the files shared by other terminal equipment cannot be obtained.
In recent years, with the development of near-earth orbit satellite technology such as a star chain, terminal devices can access the internet by means of satellite communication. Fig. 1 shows a schematic diagram of a terminal device connected to the internet via a satellite and a gateway station and implementing file sharing. Referring to fig. 1, a user link may be established between the plurality of terminal devices 1~m and the first satellite, and a feeder link may be established between the first satellite and the first gateway station, so that the plurality of terminal devices 1~m establish communication connection with the internet by means of satellite communication. In addition, the terminal u can also establish a communication connection with the internet via the second satellite and the second gateway station. Thus, the terminal device 1~m still shares files through the internet, so that the terminal device u can acquire the files shared by the terminal device 1~m.
Although the above-mentioned method of sharing file resources by using a plurality of satellites and a plurality of gateway stations has the advantages of wide coverage and no limitation of regions, the sharing and acquisition of files require the realization of communication connection with the internet through a feeder link between the satellites and the gateway stations, so that the file transmission efficiency is low while occupying more resources.
Publication number CN112368691a, entitled technology for file sharing. For each of the predefined workflows, the file is shared based on a data structure storing various document identifiers and various metadata tags, wherein the document identifiers are mapped to the metadata tags.
The publication number is CN114546969A, and the name is a file sharing method, a file sharing device and electronic equipment. In the method, an installation package of a first application program is obtained, wherein the installation package of the first application program comprises a first file and a first identifier, and the first identifier indicates that a shared object of the first file comprises a second application program; and providing the access right of the first file to the second application program according to the first identification.
Aiming at the technical problems that a plurality of satellites, a plurality of gateway stations and a server share files in the prior art, the method has the defects of large occupied resources and low file transmission efficiency, and no effective solution is proposed at present.
Disclosure of Invention
The embodiment of the disclosure provides a file sharing method, a system, a device and a storage medium based on satellite communication, which at least solve the technical problems of more occupied resources and low file transmission efficiency in the prior art in a mode of sharing files by using a plurality of satellites, a plurality of gateway stations and a server.
According to an aspect of the embodiments of the present disclosure, there is provided a file sharing method based on satellite communication, including: when entering the beam coverage of a first satellite, the first terminal equipment establishes a first user link with the first satellite, wherein a plurality of second user links respectively established by the second terminal equipment and the first satellite are also arranged in the beam coverage of the first satellite; the first terminal equipment responds to an instruction of downloading the target file resource by a user, and determines source terminal equipment corresponding to the target file resource from a plurality of second terminal equipment according to the locally stored network file resource information; the method comprises the steps that a first terminal device sends an acquisition request for acquiring a target file resource to a first satellite through a first user link, wherein the acquisition request comprises information of a source terminal device, and the first satellite sends the acquisition request to the source terminal device through a second user link; and the first satellite acquires file data of the target file resource from the source terminal device through the second user link, and sends the file data to the first terminal device through the first user link.
According to another aspect of the embodiments of the present disclosure, there is also provided a file sharing system based on satellite communication, including: the system comprises a satellite interaction module, a shared scheduling module and a user interface module, wherein when entering the beam coverage of a first satellite, the satellite interaction module establishes a first user link with the first satellite, and a plurality of second terminal devices respectively establish second user links with the first satellite in the beam coverage of the first satellite; the user interface module responds to an instruction of downloading the target file resource by a user, and the sharing scheduling module determines source terminal equipment corresponding to the target file resource from a plurality of second terminal equipment according to the locally stored network file resource information; the satellite interaction module sends an acquisition request for acquiring the target file resource to a first satellite through a first user link, wherein the acquisition request comprises information of the source terminal equipment, and the first satellite sends the acquisition request to the source terminal equipment through a second user link; and the first satellite acquires file data of the target file resource from the source terminal device through the second user link, and sends the file data to the first terminal device through the first user link.
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 a file sharing device based on satellite communication, including: a processor; and a memory, coupled to the processor, for providing instructions to the processor for processing the steps of: when entering the beam coverage of a first satellite, the first terminal equipment establishes a first user link with the first satellite, wherein a plurality of second terminal equipment respectively establishes second user links with the first satellite in the beam coverage of the first satellite; the first terminal equipment responds to an instruction of downloading the target file resource by a user, and determines source terminal equipment corresponding to the target file resource from a plurality of second terminal equipment according to the locally stored network file resource information; the method comprises the steps that a first terminal device sends an acquisition request for acquiring a target file resource to a first satellite through a first user link, wherein the acquisition request comprises information of a source terminal device, and the first satellite sends the acquisition request to the source terminal device through a second user link; and the first satellite acquires file data of the target file resource from the source terminal device through the second user link, and sends the file data to the first terminal device through the first user link.
In an embodiment of the present disclosure, a file sharing method based on satellite communication is provided. First, after entering the beam coverage of the first satellite, the first terminal device establishes a first user link with the first satellite. Then, the first terminal equipment responds to the instruction of downloading the target file resource by the user, and the source terminal equipment corresponding to the target file resource is determined according to the saved network file resource information. Further, the first terminal device transmits a request to acquire the target file resource to the first satellite, and the first satellite transmits the request to the source terminal device. And finally, the first satellite transmits the file data of the target file resource acquired from the source terminal equipment to the first terminal equipment.
Unlike the prior art that a plurality of satellites and a plurality of gateway stations need to be utilized to share file resources, the file resources can be shared only by utilizing the user link established between the terminal equipment and the satellites, so that resources required to be occupied by sharing files can be greatly reduced. In addition, when the file is shared, the technical scheme does not need to be in communication connection through the Internet, and the file can be shared only by using a satellite as a transfer station, so that the problem of low file transmission efficiency can be solved. Therefore, the technical effects of reducing the occupation of resources and improving the file transmission efficiency can be achieved through the operation. The method solves the technical problems that a plurality of satellites, a plurality of gateway stations and a server share files in the prior art, and the method occupies more resources and has low file transmission efficiency.
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. 1 is a schematic diagram of a prior art terminal device connected to the Internet through satellites and gateway stations and implementing file sharing;
FIG. 2 is a schematic diagram of a hardware architecture of a satellite system according to a first aspect of embodiment 1 of the present application;
fig. 3 is a schematic diagram of data transmission by a first satellite of a plurality of terminal devices according to a first aspect of embodiment 1 of the present application;
FIG. 4 is a flow chart of a satellite communication based file sharing method according to the first aspect of embodiment 1 of the present disclosure;
fig. 5 is a schematic diagram of beam coverage covered by a first satellite at a certain moment according to the first aspect of embodiment 1 of the present disclosure;
fig. 6A is a transmission and data volume L of one of a plurality of second terminal apparatuses according to the first aspect of embodiment 1 of the present application 1 Schematic diagram of corresponding data block;
fig. 6B is a transmission and data volume L of another one of the plurality of second terminal devices according to the first aspect of embodiment 1 of the present application 2 Schematic diagram of corresponding data block;
fig. 7 is a schematic diagram of a terminal device moving out of beam coverage of a first satellite according to a first aspect of embodiment 1 of the present application;
fig. 8 is a schematic diagram of a terminal device moving from beam coverage of a first satellite into beam coverage of a second satellite according to a first aspect of embodiment 1 of the present application;
fig. 9 is a modular schematic diagram of a terminal device according to the first aspect of embodiment 1 of the present application; and
fig. 10 is a schematic diagram of a file sharing device based on satellite communication according to the first aspect of embodiment 1 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 file sharing based on satellite communication, it being noted that the steps shown in the flowcharts of the figures may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that herein.
Fig. 2 further shows a schematic diagram of the hardware architecture of the satellite system 10. Referring to fig. 2, the satellite system 10 includes an integrated electronic system including: processor, memory, bus management module and communication interface. Wherein the memory is coupled to the processor such that the processor can access the memory, read program instructions stored in the memory, read data from the memory, or write data to the memory. The bus management module is connected to the processor and also to a bus, such as a CAN bus. The processor can communicate with the satellite-borne peripheral connected with the bus through the bus managed by the bus management module. In addition, the processor is also in communication connection with the camera, the star sensor, the measurement and control transponder, the data transmission equipment and other equipment through the communication interface. 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, satellite system 10 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 one or more of the processors and/or other data processing circuits shown in fig. 2 may be referred to herein generally as a "data processing circuit". 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 shown in fig. 2 may be used to store software programs and modules of application software, such as a program instruction/data storage device corresponding to the satellite communication-based file sharing method in the embodiment 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 satellite communication-based file sharing method 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
It should be noted here that in some alternative embodiments, the apparatus shown in fig. 2 described above may include hardware elements (including circuits), 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 specific example and is intended to illustrate the types of components that may be present in the above-described apparatus.
Fig. 3 is a schematic diagram illustrating data transmission of a plurality of terminal devices 201-20 m through a first satellite 301 according to an embodiment of the present application. Referring to fig. 3, user links may be established between a plurality of terminal devices 201-20 m and the first satellite 301, so that the first satellite 301 may be used as a "transfer station" between the terminal devices 201-20 m. Therefore, the plurality of terminal devices 201 to 20m can establish a user link through the first satellite 301 to bidirectionally transmit data information. The data information may be, for example, request information for acquiring the target file resource, file resource information shared by the second terminal device, file data of the target file resource, and the like. Further, for example, the terminal device 202 in fig. 3 may be the first terminal device.
In the above-described operating environment, according to a first aspect of the present embodiment, there is provided a satellite communication-based file sharing method implemented by the processor shown in fig. 2. Fig. 4 shows a schematic flow chart of the method, and referring to fig. 4, the method includes:
s402: when entering the beam coverage of a first satellite, the first terminal equipment establishes a first user link with the first satellite, wherein a plurality of second user links respectively established by the second terminal equipment and the first satellite are also arranged in the beam coverage of the first satellite;
s404: the method comprises the steps that a first terminal device responds to an instruction of a user for downloading target file resources, and a source terminal device corresponding to the target file resources is determined from a plurality of second terminal devices according to locally stored network file resource information, wherein the first network file resource information is used for indicating file resources contained in the terminal devices in a beam coverage area of a first satellite;
s406: the method comprises the steps that a first terminal device sends an acquisition request corresponding to a target file resource to a first satellite through a first user link, wherein the acquisition request comprises information of a source terminal device, and the first satellite sends the acquisition request to the source terminal device through a second user link; and
S408: the first satellite acquires file data of the target file resource from the source terminal device through the second user link, and transmits the file data to the first terminal device through the first user link.
Fig. 5 shows a schematic diagram of beam coverage covered by a first satellite 301 at a certain moment in time according to an embodiment of the present disclosure. And referring to fig. 5, the first satellite 301 may transmit, for example, 19 beams. Thus, a first terminal device within beam coverage of the first satellite 301 is able to establish a first user link with the first satellite 301 for interaction; a second terminal device within beam coverage of the first satellite 301 is able to establish a second user link with the first satellite 301 for interaction. And for ease of understanding the different wave positions are shown in fig. 5 in the form of cells. For example, B11 shown in fig. 5 is a beam range in which the first terminal device is located. In an embodiment, the first satellite 301 may be a low-orbit broadband communication satellite with a coverage range of between hundreds of kilometers and thousands of kilometers.
Thus, first, when the first terminal device enters the beam coverage of the first satellite 301, a communication connection with the first satellite 301 is started, so as to establish a first user link, so as to facilitate interaction with the first satellite 301 (S402). In addition, second user links corresponding to a plurality of second terminal devices are also respectively established in the beam coverage of the first satellite 301.
Then, the first terminal device uploads the local first file resource information to the first satellite 301 through the first user link; the plurality of second terminal devices upload the local second file resource information to the first satellite 301 through the second user link. After receiving the first file resource information corresponding to the first terminal device and the second file resource information corresponding to the plurality of second terminal devices, the first satellite 301 sorts the first file resource information and the second file resource information, thereby generating a local file resource list as shown in the following list 1. Table 1 shows a list of local file resources in a first terminal device and a plurality of second terminal devices.
TABLE 1
As shown in table 1, the local file resource list describes information of file resources stored in the first terminal device and the plurality of second terminal devices. For example, the file resource corresponding to the number 1 is the file a, the file resource corresponding to the number 2 is the file b, and the file resource corresponding to the number 3 is the file c. Thus, the first terminal device and the plurality of second terminal devices may upload the local file resource list to the first satellite 301 at a predetermined period or in real time. Then, the first satellite 301 broadcasts the integrated local file resource list to the first terminal device and the plurality of second terminal devices. Thus, a list of network file resources is generated in the first terminal device and the plurality of second terminal devices. Table 2 shows a list of network file resources in the first terminal device and the plurality of second terminal devices.
TABLE 2
As shown in table 2, for example, the file resource corresponding to the sequence number 1 is the file a, the terminal devices storing the file a are the terminal devices 201 and 203, the file resource corresponding to the sequence number 2 is the file b, the terminal device storing the file b is the terminal device 202, the file resource corresponding to the sequence number 3 is the file c, and the terminal device storing the file c is the terminal device 202.
Further, if the user selects the file resource to be acquired from the network file resource list locally displayed by the terminal device, the terminal device is the first terminal device at this time. And, for example, the user "clicks" on "file a" in the network file resource list.
Then, the first terminal device determines a source terminal device corresponding to the target file resource from the plurality of second terminal devices in response to an instruction of downloading the target file resource by the user, and based on the locally stored first network file resource information (S404). Specifically, for example, the first terminal device responds to an operation of "clicking" on "the" file a "in the network file resource list by the user, and determines, from the network file resource list, that the terminal devices storing the file resource are the terminal device 201 and the terminal device 203.
Further, the first terminal device determines a source terminal device sharing the target file resource. The source terminal device may be one or a plurality of source terminal devices. For example, the first terminal device determines the terminal device 201 and the terminal device 203 as source terminal devices.
Then, the first terminal device transmits a request for acquiring the target file resource to the first satellite 301 through the first user link (S406). The request for acquiring the target file resource includes, for example, name information of the target file resource and information of a source terminal device for sharing the target file resource.
Further, after receiving the request for obtaining the target file resource, the first satellite 301 sends the request for obtaining the target file resource to the source terminal device through the second user link. For example, the first satellite 301 sends a request to acquire "file a" to the terminal device 201 and the terminal device 203 through the second user link. Then, the terminal device 201 and the terminal device 203 divide the target file resource into data blocks of the same data length size according to the received request to share the "file a", and transmit the data blocks of different data amounts corresponding to the target file resource to the first satellite 301 in a predetermined ratio.
Then, the first satellite 301 receives data blocks of different data amounts corresponding to the target file resources from the plurality of second terminal apparatuses. Fig. 6A is a diagram of a transmission and data volume L of one of a plurality of second terminal devices (i.e., terminal device 201) according to an embodiment of the present application 1 Schematic diagram of corresponding data block. Fig. 6B is a diagram of another second terminal device (i.e., terminal device 203) transmission and data amount L among a plurality of second terminal devices according to an embodiment of the present application 2 Schematic diagram of corresponding data block. As shown with reference to fig. 6A and 6B, for example, the terminal device 201 and the terminal device 203 each divide the file a into L data blocks. And since terminal device 201 and terminal device 203 are at the first satellite301, and the rate at which the data blocks corresponding to the target file resources are transmitted, and thus the data amounts of the data blocks transmitted by the terminal device 201 and the terminal device 203 are different.
Specifically, for example, the time required for the terminal device 201 from entering the beam coverage of the first satellite 301 to exiting the beam coverage of the first satellite 301 is t 1 . The time required for the terminal device 203 from entering the beam coverage of the first satellite 301 to exiting the beam coverage of the first satellite 301 is t 2 . The rate at which the terminal device 201 transmits data blocks is v 1 The rate at which the terminal device 203 transmits data blocks is v 2 。
Since it is known that the time required for the terminal device 201 to go from entering the beam coverage of the first satellite 301 to leaving the beam coverage of the first satellite 301 is t 1 The terminal device 201 can therefore only transmit data blocks corresponding to the target file resources during this time. And since the rate at which the terminal device 201 transmits data blocks is known to be v 1 The data amount L of the data block that the terminal device 201 is able to transmit is therefore 1 Can be calculated by the following equation 1:
thus, the terminal device 201 is able to transmit the data amount L 1 Corresponding data blocks.
Similarly, the data amount L of the data block that the terminal 203 can transmit 2 Can be calculated by the following equation 2:
thus, the terminal device 203 can transmit the data amount L 2 Corresponding data blocks. Wherein the data volume L 1 And data volume L 2 The sum is L.
Then, the terminal device 201 will be associated with the data amount L 1 The corresponding data block is transmitted to the first satellite 301, and the terminal device 203 will and countVolume of data L 2 The corresponding data block is transmitted to the first satellite 301.
Further, the first satellite 301 integrates the data blocks acquired from the terminal device 201 and the terminal device 203, and generates a file a.
Meanwhile, the source terminal equipment is also provided with a transmission task list. The transmission task list is used for indicating file resource information being transmitted by the source terminal device. Table 3 shows a transmission task list in the source terminal device.
TABLE 3 Table 3
As shown with reference to table 3, for example, the source terminal device is terminal device 201. The terminal device 201 is transmitting the file a for the terminal device 202, and the transmission progress is progress 1, the file a for the terminal device 204, and the transmission progress is progress 2. Further, as shown with reference to table 3, the same target file resource (e.g., file a) may be simultaneously transmitted to different first terminal devices, and thus different transmission tasks and transmission schedules for the same file resource are recorded in the transmission task list, respectively. The transmission progress is used for indicating the transmission progress of the shared target file resource so as to carry out breakpoint continuous transmission when the downloading process is interrupted.
Further, the first satellite 301 transmits the data block corresponding to the target file resource to the first terminal device through the first user link (S408). Specifically, the first terminal device counts the progress of the downloading task in real time and updates the task progress list while receiving the data block corresponding to the target file resource. Table 4 shows the task schedule in the first terminal device.
TABLE 4 Table 4
The download task list shows, as shown in table 4, the target file resource being downloaded by the first terminal device, the download progress, and the source terminal device corresponding to the target file resource. The downloading progress is used for indicating the downloading progress corresponding to the downloading target file resource so as to carry out breakpoint continuous transmission when the downloading process is interrupted.
And finally, the first terminal equipment receives the data blocks corresponding to the target file resources and combines the data blocks corresponding to the target file resources until the complete target file resources are received.
As described in the background art, although the method of sharing file resources using a plurality of satellites and a plurality of gateway stations has the advantages of wide coverage and no geographical limitation, the sharing and acquisition of files require communication connection with the internet through a feeder link between the satellites and the gateway stations, so that file transmission efficiency is low while occupying more resources.
In view of this, the present application provides a file sharing method based on satellite communication. The method can facilitate sharing of the target file resource between the source terminal device and the first terminal device by establishing a first user link between the first terminal device and the first satellite 301 and a second user link between the source terminal device and the first satellite 301, respectively, and connecting the first terminal device to the source terminal device through the first user link and the second user link. Unlike the prior art that a plurality of satellites and a plurality of gateway stations need to be utilized to share file resources, the file resources can be shared only by utilizing the user link established between the terminal equipment and the satellites, so that resources required to be occupied by sharing the target file can be greatly reduced. In addition, when the file is shared, the technical scheme does not need to be in communication connection through the Internet, and the file can be shared only by using a satellite as a transfer station, so that the problem of low file transmission efficiency can be solved. Therefore, the technical effects of reducing the occupation of resources and improving the file transmission efficiency can be achieved through the operation. The method solves the technical problems that a plurality of satellites, a plurality of gateway stations and a server share files in the prior art, and the method occupies more resources and has low file transmission efficiency.
Optionally, in the process that the first terminal device establishes the first user link with the first satellite, the method further includes: the method comprises the steps that a first terminal device sends local first file resource information to a first satellite through a first user link, wherein the first file resource information is used for indicating file resources shared by the first terminal device; the first satellite receives second file resource information from the second terminal equipment through a second user link, wherein the second file resource information is used for indicating file resources shared by the second terminal equipment; the first satellite integrates the first file resource information corresponding to the first terminal equipment and the second file resource information corresponding to the second terminal equipment, and sends the integrated file resource information to the first terminal equipment and the plurality of second terminal equipment respectively; and the first terminal equipment and the plurality of second terminal equipment update the first network file resource information according to the received file resource information.
Specifically, in the case where the first terminal device enters into the beam coverage of the first satellite 301, the first terminal device transmits local file resource information (i.e., first file resource information) to the first satellite 301 through the first user link; in the case where the plurality of second terminal apparatuses enter the beam coverage of the first satellite 301, the plurality of second terminal apparatuses transmit local file resource information (i.e., second file resource information) to the first satellite 301 through the second user link. The local file resource information corresponding to the first terminal device may be a local file resource list corresponding to the first terminal device. The local resource information corresponding to the second terminal device may be a local file resource list corresponding to a plurality of second terminal devices.
Then, the first satellite 301 integrates the received first file resource information corresponding to the first terminal device and the second file resource information corresponding to the plurality of second terminal devices, and transmits the integrated file resource information to the first terminal device and the plurality of second terminal devices, respectively.
Further, the first terminal device and the plurality of second terminal devices update the original first network file resource information inside according to the received file resource information.
Therefore, the first file resource information corresponding to the first terminal equipment and the second file resource information corresponding to the second terminal equipment are integrated, and the integrated file resource information is respectively sent to the first terminal equipment and the plurality of second terminal equipment, so that the first terminal equipment and the plurality of second terminal equipment update the first network file resource information according to the received file resource information, and the technical effect that the first terminal equipment can be guaranteed to normally download target file resources is achieved.
Optionally, the operation of the first terminal device to determine the source terminal device corresponding to the target file resource from the plurality of second terminal devices according to the locally stored first network file resource information in response to the instruction of the user to download the target file resource includes: the method comprises the steps that a first terminal device responds to an instruction of a user for downloading target file resources and inquires first network file resource information, wherein the first network file resource information is used for indicating file resources contained in the terminal device in a beam coverage area of a first satellite; and the first terminal device determines at least one source terminal device for sharing the target file resource from the first network file resource information.
Specifically, for example, after the user completes the "click" operation, the first terminal device responds to the operation of "clicking" on the file a by the user (i.e., an instruction to download the file a), and queries the network file resource list, as in table 2 above.
The first terminal device inquires that the terminal device storing the file a is the terminal device 201 and the terminal device 203. Further, the first terminal device determines the terminal device most suitable for transmitting the file a as the terminal device 201 and the terminal device 203 (i.e., source terminal device). Then, after receiving the request for acquiring the file a, the terminal device 201 and the terminal device 203 send the file a to the first terminal device. It is noted that the source terminal device may be one or more.
Optionally, the method further comprises: under the condition that the first terminal equipment moves out of the beam coverage of the first satellite, the first terminal equipment breaks a first user link established with the first satellite and deletes the first network file resource information. Further optionally, the method further comprises: the first terminal device establishing a third user link for interacting with the second satellite in case the first terminal device moves into beam coverage of the second satellite; the first terminal equipment sends the first file resource information to a second satellite through a third user link; and the first terminal equipment receives the second network file resource information sent by the second satellite and updates the first network file resource information into the second network file resource information, wherein the second network file resource information is used for indicating file resources contained in the terminal equipment in the beam coverage range of the second satellite.
Specifically, fig. 7 is a schematic diagram of a terminal device moving out of beam coverage of a first satellite 301 according to an embodiment of the present application. Referring to fig. 7, in the case where the terminal device to be moved out of the beam coverage of the first satellite 301 in fig. 7 is the first terminal device, the first terminal device disconnects the first user link established with the first satellite 301. At the same time, the first terminal device pauses the downloading process of the target file resources, and deletes the network file resources related to the plurality of second terminal devices in the beam coverage of the first satellite 301.
For example, the first terminal device is downloading file a, and since the first satellite 301 is in the process of moving continuously, the first terminal device is about to move out of the beam coverage of the first satellite 301. Meanwhile, since the first terminal device disconnects the first user link established with the first satellite 301, the first satellite 301 cannot transmit the data blocks remaining in the file a to the first terminal device, so that the first terminal device suspends the downloading process of the target file resource. Further, since the first terminal device has moved out of the coverage area of the first satellite 301, the first terminal device deletes the first network file resource information related to the plurality of second terminal devices in the beam coverage area of the first satellite 301.
Correspondingly, fig. 8 shows a schematic diagram of a terminal device according to an embodiment of the present application moving from the beam coverage of the first satellite 301 into the beam coverage of the second satellite 302. Referring to fig. 8, the first terminal device, after being moved out of the beam coverage of the first satellite 301, is about to enter the coverage of the second satellite 302, so that the first terminal device establishes a third user link for interaction with the second satellite 302. That is, the first terminal device may communicate data information with the second satellite 302 via a third user link.
Further, after the first terminal device establishes a third user link with the second satellite 302, the first terminal device sends the local file resource list to the second satellite 302, and the plurality of third terminal devices sends the local file resource list to the second satellite 302. The second satellite 302 integrates the local file resource list corresponding to the first terminal device and the local file resource lists corresponding to the plurality of third terminal devices, and transmits the integrated file resource list to the first terminal device and the plurality of third terminal devices.
Further, the first terminal device updates the original first network file resource information (for example, updates the file resource information corresponding to the second terminal device in the beam coverage of the first satellite 301 to the file resource information corresponding to the third terminal device in the beam coverage of the second satellite 302).
And finally, the first terminal equipment inquires terminal equipment corresponding to the target file resource in the updated network file resource list, and determines one or more of the terminal equipment as source terminal equipment. And the first terminal equipment restarts the downloading task of the target file resource after determining the source terminal equipment.
Therefore, through the above operation, the first terminal device may reschedule the source terminal device in the second satellite 302 according to the updated network file resource list, so as to ensure the normal downloading of the target file resource.
Optionally, the method further comprises: and under the condition that any one of the second terminal equipment moves out of the beam coverage area of the first satellite, the terminal equipment breaks a second user link established with the first satellite and deletes the first network file resource information.
Specifically, referring to fig. 7, in the case where the terminal device to be moved out of the beam coverage of the first satellite 301 in fig. 7 is any one of the second terminal devices, the terminal device disconnects the second user link established with the first satellite 301. And if the terminal equipment has the transmission task, terminating the transmission task, namely all the transmission tasks in the table 3, and deleting the first network file resource information in the network file resource list.
Correspondingly, when the terminal equipment is about to enter the beam coverage area of the second satellite 302, a user link for interaction with the second satellite 302 is established, local file resource information is uploaded to the second satellite 302 through the user link, and finally other terminal equipment in the beam coverage area is broadcasted by the second satellite 302.
According to another aspect of the embodiments of the present application, there is also disclosed a file sharing system based on satellite communication, including: the system comprises a first satellite, a first terminal device and a plurality of second terminal devices, wherein the first terminal device and the plurality of second terminal devices each comprise: the system comprises a satellite interaction module, a shared scheduling module and a user interface module, wherein when a first terminal device enters a beam coverage area of a first satellite, the satellite interaction module establishes a first user link with the first satellite, and a plurality of second terminal devices respectively establish second user links with the first satellite in the beam coverage area of the first satellite; the user interface module responds to an instruction of downloading target file resources by a user, and the sharing scheduling module determines source terminal equipment corresponding to the target file resources from a plurality of second terminal equipment according to first network file resource information stored locally, wherein the first network file resource information is used for indicating file resources contained in the terminal equipment within the beam coverage of a first satellite; the satellite interaction module sends an acquisition request corresponding to the target file resource to a first satellite through a first user link, wherein the acquisition request comprises information of source terminal equipment, and the first satellite sends the acquisition request to the source terminal equipment through a second user link; and the first satellite acquires file data of the target file resource from the source terminal device through the second user link, and sends the file data to the first terminal device through the first user link.
Specifically, fig. 9 is a schematic diagram of a terminal device according to an embodiment of the present application. Referring to fig. 9, the module may be, for example, a program module provided in the terminal device, and the schematic diagram may be applied to any one of the terminal devices 201 to 20 m.
Referring to fig. 2, terminal devices 201 to 20m are provided with file storage spaces for storing file resources and downloading file resources. For example, files a, b, c, d, e, f, and the like are stored in the file storage space.
In addition, the terminal devices 201 to 20m are further provided with a network file resource list (e.g., table 2) and a local file resource list (e.g., table 3). Wherein the network file resource list is used to indicate file resources shared by the terminal devices that establish a communication connection with the first satellite 301. For example, in the present embodiment, the network file resource column indicates file resources shared by the terminal devices 201 to 20 m.
The local file resource list records file resource information stored in the file storage space by the terminal devices 201 to 20 m. Thus, the terminal devices 201 to 20m may upload the local file resource list to the first satellite 301 in a predetermined period or in real time, and broadcast the local file resource list to a plurality of second terminal devices through the first satellite 301.
Further, a user interface module is further provided in the terminal device 201 to 20m, so that a user can input an instruction for requesting the target file resource through the user interface module. For example, the first terminal device displays a network file resource list, and the user may "click" on the name of the target file resource in the network file resource list, thereby selecting the target file resource that needs to be acquired. The user interface module in the first terminal device generates a request for acquiring the target file resource in response to the "click" operation of the user, and sends the request for acquiring the target file resource to the first satellite 301 through the satellite interaction module. The request for obtaining the target file resource may be, for example, an instruction for obtaining the target file resource.
From the above, the terminal devices 201 to 20m are further provided with satellite interaction modules. The satellite interaction module is configured to establish a communication connection with the first satellite 301. For example, when the first terminal device enters the beam coverage of the first satellite 301, the satellite interaction module establishes a first user link with the first satellite 301. Thus, the first terminal device may send, through the satellite interaction module, a request for obtaining the target file resource and the local file resource list to the first satellite 301; the first terminal device may also receive, through the satellite interaction module, a list of local file resources and target file resources corresponding to the plurality of second terminal devices.
In addition, a sharing scheduling module is further arranged in the terminal equipment 201-20 m. The sharing scheduling module is mainly used for determining source terminal equipment sharing the target file resources. For example, after receiving a request for acquiring a target file resource sent by a user, the first terminal device sends the acquisition request to the sharing scheduling module by the user interface module. The sharing scheduling module queries terminal equipment corresponding to the target file resource in the network file resource list and determines at least one source terminal equipment for sharing the target file resource. Further, the shared dispatch module sends the acquisition request to the first satellite 301 through the satellite interaction module. Wherein the acquisition request includes name information of the target file resource and source terminal device information for sharing the target file resource.
Further, a file operation module is further arranged in the terminal equipment 201-20 m. The file operation module is configured to transmit, to the first satellite 301, a file in the file storage space through the satellite interaction module. For example, if a certain terminal device becomes a source terminal device sharing the target file resource. The satellite interaction module receives the request for sharing the target file resource and then sends the request to the file operation module. The file operation module invokes the target file resource from the file storage space according to the received request for sharing the target file resource, and uploads the target file resource to the first satellite 301 through the satellite interaction module. Thus, the first satellite 301 transmits the target file resource to the first terminal device.
It should be noted that, the above examples are mainly the first terminal device or the source terminal device in the beam coverage of the first satellite 301, and it should be clear to those skilled in the art that other terminal devices in the beam coverage of the first satellite 301, or the terminal devices in the beam coverage of other satellites, can achieve the above operations and achieve the same technical effects.
Optionally, the first terminal device and the second terminal device further include: the system comprises a file operation module, a first user link and a second user link, wherein the file operation module sends local first file resource information to a first satellite through the first user link, and the first file resource information is used for indicating file resources shared by the first terminal equipment; the first satellite receives second file resource information from a satellite interaction module of the second terminal device through a second user link, wherein the second file resource information is used for indicating file resources shared by the second terminal device; the file operation module of the first terminal equipment updates the first network file resource information according to the received file resource information; and the file operation modules of the plurality of second terminal devices update the first network file resource information according to the received file resource information.
Unlike the prior art that a plurality of satellites and a plurality of gateway stations need to be utilized to share file resources, the file resources can be shared only by utilizing the user link established between the terminal equipment and the satellites, so that resources required to be occupied by sharing files can be greatly reduced. In addition, when the file is shared, the technical scheme does not need to be in communication connection through the Internet, and the file can be shared only by using a satellite as a transfer station, so that the problem of low file transmission efficiency can be solved. Therefore, the technical effects of reducing the occupation of resources and improving the file transmission efficiency can be achieved through the operation. The method solves the technical problems that a plurality of satellites, a plurality of gateway stations and a server share files in the prior art, and the method occupies more resources and has low file transmission efficiency.
Further, referring to fig. 2, according to a third 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, according to the embodiment, the technical effects of reducing the occupation of resources and improving the file transmission efficiency can be achieved. The method solves the technical problems that a plurality of satellites, a plurality of gateway stations and a server share files in the prior art, and the method occupies more resources and has low file transmission efficiency.
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. 10 shows a satellite communication-based file sharing apparatus 1000 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: when entering the beam coverage of a first satellite, the first terminal equipment establishes a first user link with the first satellite, wherein a plurality of second terminal equipment respectively establishes second user links with the first satellite in the beam coverage of the first satellite; the first terminal equipment responds to an instruction of downloading the target file resource by a user, and determines source terminal equipment corresponding to the target file resource from a plurality of second terminal equipment according to the locally stored network file resource information; the method comprises the steps that a first terminal device sends a corresponding acquisition request of a target file resource to a first satellite through a first user link, wherein the acquisition request comprises information of a source terminal device, and the first satellite sends the acquisition request to the source terminal device through a second user link; and the first satellite acquires file data of the target file resource from the source terminal device through the second user link, and sends the file data to the first terminal device through the first user link.
Therefore, according to the embodiment, the technical effects of reducing the occupation of resources and improving the file transmission efficiency can be achieved. The method solves the technical problems that a plurality of satellites, a plurality of gateway stations and a server share files in the prior art, and the method occupies more resources and has low file transmission efficiency.
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 satellite communication-based file sharing method, comprising:
when entering the beam coverage of a first satellite, a first terminal device establishes a first user link with the first satellite, wherein a plurality of second user links respectively established by a second terminal device and the first satellite are also arranged in the beam coverage of the first satellite;
the method comprises the steps that a first terminal device responds to an instruction of a user for downloading target file resources, and source terminal devices corresponding to the target file resources are determined from a plurality of second terminal devices according to first network file resource information stored locally, wherein the first network file resource information is used for indicating file resources contained in the terminal devices in a beam coverage area of a first satellite;
the first terminal equipment sends an acquisition request corresponding to the target file resource to the first satellite through the first user link, wherein the acquisition request comprises information of the source terminal equipment, and the first satellite sends the acquisition request to the source terminal equipment through the second user link;
A first satellite obtains file data of the target file resource from the source terminal device through the second user link and transmits the file data to the first terminal device through the first user link, wherein
During the process of establishing the first user link with the first satellite by the first terminal device, the method further comprises:
the first terminal equipment sends local first file resource information to the first satellite through the first user link, wherein the first file resource information is used for indicating file resources shared by the first terminal equipment;
the first satellite receives second file resource information from the second terminal equipment through the second user link, wherein the second file resource information is used for indicating file resources shared by the second terminal equipment;
the first satellite integrates the first file resource information corresponding to the first terminal equipment and the second file resource information corresponding to the second terminal equipment, and sends the integrated file resource information to the first terminal equipment and the plurality of second terminal equipment respectively; and
and the first terminal equipment and the plurality of second terminal equipment update the first network file resource information according to the received file resource information.
2. The method according to claim 1, wherein the operation of the first terminal device to determine the source terminal device corresponding to the target file resource from the plurality of second terminal devices according to the locally stored first network file resource information in response to the instruction of the user to download the target file resource, includes:
the first terminal equipment responds to an instruction of downloading the target file resource by a user and inquires about the first network file resource information; and
the first terminal equipment determines at least one source terminal equipment for sharing the target file resource from the first network file resource information.
3. The method as recited in claim 2, further comprising:
and under the condition that the first terminal equipment moves out of the beam coverage area of the first satellite, disconnecting a first user link established with the first satellite, and deleting the first network file resource information.
4. A method according to claim 3, further comprising:
establishing a third user link for interacting with a second satellite in the event that the first terminal device moves into beam coverage of the second satellite;
The first terminal equipment sends the first file resource information to the second satellite through the third user link; and
the first terminal equipment receives second network file resource information sent by the second satellite and updates the first network file resource information into the second network file resource information, wherein the second network file resource information is used for indicating file resources contained in the terminal equipment in the beam coverage area of the second satellite.
5. The method as recited in claim 2, further comprising:
and under the condition that any one of the second terminal equipment moves out of the beam coverage area of the first satellite, the terminal equipment disconnects a second user link established with the first satellite and deletes the first network file resource information.
6. A storage medium comprising a stored program, wherein the method of any one of claims 1 to 5 is performed by a processor when the program is run.
7. A satellite communication based file sharing system, comprising: a first satellite, a first terminal device, and a plurality of second terminal devices, wherein the first terminal device and the plurality of second terminal devices each comprise: satellite interaction module, shared scheduling module and user interface module, wherein
When the first terminal equipment enters the beam coverage area of the first satellite, the satellite interaction module establishes a first user link with the first satellite, wherein a plurality of second terminal equipment respectively establish second user links with the first satellite in the beam coverage area of the first satellite;
the user interface module responds to an instruction of downloading target file resources by a user, and the sharing scheduling module determines source terminal equipment corresponding to the target file resources from the plurality of second terminal equipment according to first network file resource information stored locally, wherein the first network file resource information is used for indicating file resources contained in the terminal equipment within the beam coverage range of the first satellite;
the satellite interaction module sends an acquisition request corresponding to the target file resource to the first satellite through the first user link, wherein the acquisition request comprises information of the source terminal equipment, and the first satellite sends the acquisition request to the source terminal equipment through the second user link;
the first satellite obtains file data of the target file resource from the source terminal device through the second user link and sends the file data to the first terminal device through the first user link, wherein
The first terminal device and the second terminal device further include: file operation module, wherein
The satellite interaction module in the first terminal equipment sends local first file resource information to the first satellite through the first user link, wherein the first file resource information is used for indicating file resources shared by the first terminal equipment;
the first satellite receives second file resource information from a satellite interaction module of the second terminal device through the second user link, wherein the second file resource information is used for indicating file resources shared by the second terminal device;
the file operation module of the first terminal equipment updates the first network file resource information according to the received file resource information; and
and the file operation modules of the plurality of second terminal devices update the first network file resource information according to the received file resource information.
8. A satellite communication-based file sharing apparatus, comprising:
a processor; and
a memory, coupled to the processor, for providing instructions to the processor to process the following processing steps:
When entering the beam coverage of a first satellite, a first terminal device establishes a first user link with the first satellite, wherein a plurality of second user links respectively established by a second terminal device and the first satellite are also arranged in the beam coverage of the first satellite;
the method comprises the steps that a first terminal device responds to an instruction of a user for downloading target file resources, and source terminal devices corresponding to the target file resources are determined from a plurality of second terminal devices according to first network file resource information stored locally, wherein the first network file resource information is used for indicating file resources contained in the terminal devices in a beam coverage area of a first satellite;
the first terminal equipment sends an acquisition request corresponding to the target file resource to the first satellite through the first user link, wherein the acquisition request comprises information of the source terminal equipment, and the first satellite sends the acquisition request to the source terminal equipment through the second user link;
a first satellite obtains file data of the target file resource from the source terminal device through the second user link and transmits the file data to the first terminal device through the first user link, wherein
During the process of establishing the first user link with the first satellite by the first terminal device, the method further comprises:
the first terminal equipment sends local first file resource information to the first satellite through the first user link, wherein the first file resource information is used for indicating file resources shared by the first terminal equipment;
the first satellite receives second file resource information from the second terminal equipment through the second user link, wherein the second file resource information is used for indicating file resources shared by the second terminal equipment;
the first satellite integrates the first file resource information corresponding to the first terminal equipment and the second file resource information corresponding to the second terminal equipment, and sends the integrated file resource information to the first terminal equipment and the plurality of second terminal equipment respectively; and the first terminal equipment and the plurality of second terminal equipment update the first network file resource information according to the received file resource information.
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