CN110535521B - Service transmission method and device of heaven-earth integrated network - Google Patents
Service transmission method and device of heaven-earth integrated network Download PDFInfo
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- CN110535521B CN110535521B CN201810517645.0A CN201810517645A CN110535521B CN 110535521 B CN110535521 B CN 110535521B CN 201810517645 A CN201810517645 A CN 201810517645A CN 110535521 B CN110535521 B CN 110535521B
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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
- H04B7/18517—Transmission equipment in earth stations
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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
- H04B7/18519—Operations control, administration or maintenance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/50—Service provisioning or reconfiguring
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Abstract
The invention provides a service transmission method and a device of a heaven-earth integrated network, wherein the method comprises the following steps: a base station receives a first service request sent by a terminal; the base station judges whether to send first service data corresponding to the first service request to the terminal according to the ground load of the base station; if so, the base station sends the first service data to the terminal; if not, the base station sends the first service request to the satellite so that the satellite sends the first service data to the terminal according to the first service request; and mobile edge computing servers are configured in the base station and the satellite to provide service for the terminal. The invention combines the base station and the satellite to provide service transmission service for users, improves the communication resource utilization rate of the integrated network, and improves the user experience.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a service transmission method and apparatus for a space-ground integrated network.
Background
With the continuous advance of the fifth generation mobile communication technology 5G, it is necessary to combine the satellite network and the terrestrial network, and the concept of a heaven-earth integrated communication network is called. The heaven-earth integrated communication network develops rapidly due to the characteristics of wide area, flexibility, robustness and the like.
In the prior art, in a heaven and earth integrated communication network, a satellite network is only used as a pipelined auxiliary network to carry out simple data transmission. When a user requests service data in the mechanical communication network, once the ground network has the phenomena of overlarge load of an access network, partial damage and the like, the user cannot request the service data, the utilization rate of communication resources is low, and the user experience is poor.
Disclosure of Invention
The invention provides a service transmission method, device and system of a heaven and earth integrated network, which improve the communication resource utilization rate of the heaven and earth integrated network and improve the user experience.
The first aspect of the present invention provides a service transmission method for a space-ground integrated network, which is applied to a space-ground integrated network system, where the system includes a terminal, a base station, and a satellite, and an air-ground link is provided between the base station and the satellite, and the method includes:
the base station receives a first service request sent by the terminal;
the base station judges whether the base station sends first service data corresponding to the first service request to the terminal or not according to the ground load of the base station;
if so, the base station sends the first service data to the terminal according to the first service request, the base station is configured with a first mobile edge computing MEC server, a plurality of second service data are stored in the first MEC server, each second service data is service data of which the request times are greater than the preset times within a preset time period, and the first service data is service data in the plurality of second service data;
if not, the base station sends the first service request to the satellite so that the satellite sends the first service data to the terminal according to the first service request, the satellite is provided with a second MEC server, a plurality of third service data are stored in the second MEC server, each third service data is service data, the number of times of request is greater than a preset number of times within a preset time period, and the first service data is service data in the plurality of third service data.
Optionally, before the base station determines, according to the ground load of the base station, whether the base station sends the first service data corresponding to the first service request to the terminal, the method further includes:
the base station divides the terminals requesting the same first service data into a group and stores the grouping information in the first service request;
the base station sends the first service data to the terminal, and the method comprises the following steps:
and the base station multicasts the first service data to the corresponding terminal according to the grouping information.
Optionally, the determining, by the base station, whether the base station sends the first service request message to the terminal according to the ground load of the base station includes:
the base station judges whether the ground load is smaller than a preset load or not;
if so, the base station determines that the base station performs the operation of sending the first service data to the terminal;
if not, judging whether the satellite signal intensity of the satellite is greater than the threshold signal intensity;
and if so, determining that the base station executes the operation of sending the first service request to the satellite.
Optionally, the system further includes a multi-connection gateway and a core network, a ground link is provided between the base station and the multi-connection gateway, and the multi-connection gateway is connected to the core network;
before the base station sends the first service data to the terminal according to the first service request, the method further includes:
the base station judges whether the first service data exists in a plurality of second service data or not;
if so, sending the first service data to the terminal;
if not, the first service request is sent to the multi-connection gateway, so that the multi-connection gateway sends the first service request to the core network, and the core network sends the first service data to the terminal.
A second aspect of the present invention provides a service transmission method for a space-ground integrated network, including:
a satellite receives a first service request sent by the terminal;
the satellite sends first service data corresponding to the first service request to the terminal according to the first service request, the satellite is configured with a second MEC server, a plurality of third service data are stored in the second MEC server, each third service data is service data with the request times larger than the preset times within a preset time period, and the first service data is service data in the plurality of third service data.
Optionally, the system further includes a multi-connection gateway and a core network, an air-ground link is provided between the satellite and the multi-connection gateway, and the multi-connection gateway is connected to the core network; the first service request comprises grouping information of the terminal;
before the satellite sends the first service data corresponding to the first service request to the terminal according to the first service request, the method further includes:
the satellite judges whether the first service data exists in a plurality of third service data or not;
if so, sending the first service data to the terminal;
if not, the first service request is sent to the multi-connection gateway, so that the multi-connection gateway sends the first service request to the core network, and the core network sends the first service data to the terminal.
A third aspect of the present invention provides a base station, including:
a first receiving module, configured to receive a first service request sent by the terminal;
the judging module is used for judging whether the base station sends the first service data corresponding to the first service request to the terminal according to the ground load of the base station;
a first sending module, configured to send the first service data to the terminal according to the first service request when a determination result of the determining module is yes, where the base station is configured with a first mobile edge computing MEC server, the first MEC server stores a plurality of second service data, each second service data is a service data whose request frequency is greater than a preset frequency within a preset time period, and the first service data is a service data in the plurality of second service data;
and the second sending module is used for sending the first service request to the satellite when the judgment result of the judging module is negative, so that the satellite sends the first service data to the terminal according to the first service request, the satellite is provided with a second MEC server, third service data are stored in the second MEC server, and the third service data are service data with the request times larger than the preset times in a preset time period.
A fourth aspect of the present invention provides a satellite, comprising:
a receiving module, configured to receive a first service request sent by the terminal;
the satellite is provided with a second MEC server, a plurality of third service data are stored in the second MEC server, each third service data is service data with the request times larger than the preset times within a preset time period, and the first service data is service data in the plurality of third service data.
A fifth aspect of the present invention provides a base station, comprising: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executes the computer-executable instructions stored in the memory, so that the base station executes the service transmission method of the heaven-earth integrated network.
A sixth aspect of the present invention provides a satellite comprising: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executes the computer-executable instructions stored in the memory, so that the satellite executes the service transmission method of the heaven-earth integrated network.
The invention provides a service transmission method and a device of a heaven-earth integrated network, wherein the method comprises the following steps: a base station receives a first service request sent by a terminal; the ground load of the base station judges whether the base station sends first service data corresponding to the first service request to the terminal; if so, the base station sends first service data to the terminal according to the first service request, the base station is configured with a first mobile edge computing MEC server, a plurality of second service data are stored in the first MEC server, each second service data is service data with the request times larger than the preset times within a preset time period, and the first service data is service data in the plurality of second service data; if not, the base station sends the first service request to the satellite so that the satellite sends the first service data to the terminal according to the first service request, the satellite is provided with a second MEC server, a plurality of third service data are stored in the second MEC server, each third service data is service data, the number of times of request is larger than the preset number of times within a preset time period, and the first service data is service data in the plurality of third service data. The invention combines the base station and the satellite in the integrated network, provides service transmission service for users, improves the communication resource utilization rate of the integrated network, and improves the user experience.
Drawings
Fig. 1 is a first system architecture diagram of a world-wide integrated network provided by the present invention;
fig. 2 is a first signaling flow chart of a service transmission method of a world-wide integrated network provided by the present invention;
FIG. 3 is a schematic diagram of a system architecture of a heaven-earth integrated network according to the present invention;
fig. 4 is a signaling flow chart ii of a service transmission method of a heaven-earth integrated network provided by the present invention;
fig. 5 is a first schematic structural diagram of a base station according to the present invention;
fig. 6 is a schematic structural diagram of a base station according to the present invention;
fig. 7 is a third schematic structural diagram of a base station provided in the present invention;
FIG. 8 is a first schematic structural diagram of a satellite according to the present invention;
FIG. 9 is a second schematic structural diagram of a satellite according to the present invention;
fig. 10 is a schematic structural diagram of a satellite according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic view of a system architecture of a space-ground integrated network provided by the present invention, and as shown in fig. 1, the space-ground integrated network system includes a terminal, a base station, and a satellite. Wherein, an air-ground link is arranged between the base station and the satellite.
The coverage range of the satellite network is wide, and the satellite has direct sight distance without multipath effect generated by refraction, so that the satellite network communication is not obviously interfered by terrain; the backhaul capacity of the terrestrial network is large, superior to that of the satellite network, but is susceptible to terrain interference. The space-ground integrated network provided by the embodiment combines a satellite network and a land network, and increases the flexibility and the robustness of the network.
Fig. 2 is a signaling flow chart of a first service transmission method of a space-ground integrated network provided by the present invention, as shown in fig. 2, the service transmission method of the space-ground integrated network provided by this embodiment relates to data interaction between a terminal, a base station, and a satellite, and the service transmission method of the space-ground integrated network provided by this embodiment specifically includes the following steps:
s101, the terminal sends a first service request to the base station.
And in a service area controlled by the base station, the terminal sends a first service request to the base station. The first service of this embodiment specifically includes: information-based services, message-based services, entertainment-based services, mobile commerce services, call-based services, and the like.
Specifically, the information service provides news, weather, sports, tourism, finance and other information to the user according to different interests and requirements of the user. The entertainment services mainly include ring tones, icons, music, video, games, chatting, reading, and the like. The message service is used for providing information and information services for users by operators or service providers based on Short Message Service (SMS), Multimedia Message Service (MMS) and Location Based Service (LBS) technologies. Mobile commerce services include micropayments, online transactions, and the like. The call type service includes voice call, video call, etc. The above service types are all exemplary, and the present embodiment does not specifically limit the type of the first service.
In this embodiment, the first service request sent by the terminal may include a terminal identifier and a service identifier; specifically, the terminal identifier may be an IP address of the terminal, or may be a location of the terminal; the service identifier can be an icon of the service, and can also be Chinese and English abbreviations of the service; the present embodiment does not limit the terminal identifier and the service identifier in the first service request. It is conceivable for those skilled in the art to transmit the terminal identifier and the service identifier in the first service request to the base station by means of coding.
S102, the base station judges whether the base station sends first service data corresponding to the first service request to the terminal or not according to the ground load of the base station; if yes, executing S103; if not, S104 is executed.
In this step, after receiving the first service request sent by the terminal, the base station determines whether the first service request is processed by itself or sent to the satellite for processing according to the ground load of the base station. The ground load of the base station can predict whether the ground load is about to reach saturation or not through the data traffic of the current time and the previous time, if the ground load is predicted not to reach saturation, the ground load is small, and the base station sends first service data corresponding to the first service request to the terminal; the base station may also determine whether the current data traffic reaches a preset data traffic, and if the current data traffic does not reach the preset data traffic, the ground load is small, and the base station sends the first service data corresponding to the first service request to the terminal.
In this embodiment, the base station may periodically determine the ground load condition, or may determine the ground load condition when the service request volume of the terminal reaches a preset number. As long as the base station can determine whether to send the first service data corresponding to the first service request to the terminal according to the ground load condition of the base station, the embodiment does not limit this.
S103, the base station sends the first service data to the terminal according to the first service request.
The base station is configured with a first mobile edge computing MEC server, wherein the MEC server is a novel distributed cache computing server, and the MEC server can realize effective sinking of service resources and improve the operating efficiency of the whole communication network.
Before receiving the first service request, the base station needs to perform deep learning, and the specific learning process may be: the base station counts service request data sent by a terminal in a preset time period before receiving the first service request in a service area managed and controlled by the base station, determines a plurality of second services of which the service request times in the preset time period are greater than the preset times, the base station sends the second service request to a core network, the core network sends the plurality of second service data requested by the base station to the base station, and the base station caches the plurality of second service data in a first MEC server, namely the plurality of second service data cached in the first MEC server are hotspot file data in the service area managed and controlled by the base station. And when the base station judges that the ground load is smaller, sending first service data corresponding to the first service request to the terminal, wherein the first service data is service data in the plurality of second service data.
Specifically, the base station may periodically request the core network for hotspot file data; or after the hot spot file data is cached to the first MEC server, setting the valid time of the hot spot file data, and after the valid time of the hot spot file data arrives, counting the service request data in the preset time period before the valid time again by the base station, and caching new hot spot file data.
And S104, the base station sends the first service request to the satellite.
And when the base station judges that the first service request is processed by the satellite according to the ground load of the base station, the base station sends the first service request to the satellite.
And S105, the satellite sends the first service data corresponding to the first service request to the terminal according to the first service request.
The satellite is configured with a second MEC server, wherein the second MEC server has less storage capacity and computing power than the first MEC server due to constraints of the volume of hardware that can be carried on the satellite.
The satellite also needs to perform deep learning before receiving the first service request, and the specific process of learning is similar to the process of learning by the base station, which can specifically refer to the description in S103. Different from the learning process of the base station described above is: because the scope of the service area under the jurisdiction of the satellite is larger than the scope of the service area managed and controlled by the base station, the scope of the service request data in the preset time period before the satellite counts the first service request is larger than the scope counted by the base station.
The satellite determines a plurality of third services of which the service request times in the preset time period are greater than the preset times, the satellite sends a third service request to the core network, the core network sends a plurality of third service data requested by the satellite to the satellite, and the satellite caches the plurality of third service data in the second MEC server, namely the plurality of third service data cached in the second MEC server are hotspot file data in a service area managed and controlled by the base station. And when the base station judges that the ground load is larger, sending the first service request to the satellite so that the satellite sends the first service data to the terminal, wherein the first service data is service data in the plurality of third service data.
Specifically, the manner in which the satellite requests the core network for the hotspot file data may be the same as the manner in which the base station requests the core network for the hotspot file data, and details are not repeated here.
In this embodiment, the base station receives a first service request sent by the terminal, and determines whether the base station sends first service data corresponding to the first service request to the terminal according to the ground load of the base station; if so, the base station sends first service data to the terminal according to the first service request, the base station is configured with a first mobile edge computing server MEC, a plurality of second service data are stored in the first MEC, each second service data is service data with the request times larger than the preset times within a preset time period, and the first service data is service data in the plurality of second service data; if not, the base station sends the first service request to the satellite so that the satellite sends the first service data to the terminal according to the first service request, the satellite is configured with a second MEC, a plurality of third service data are stored in the second MEC, each third service data is service data of which the request times are greater than the preset times in a preset time period, and the first service data is service data in the plurality of third service data. Firstly, hot spot files are cached in a base station and a satellite, and when a terminal carries out a service request, service data are directly sent to the terminal without passing through a core network, so that signaling interaction is reduced; and when the ground load is large, the first service request is sent to the satellite, and the satellite sends the first service data to the terminal, so that the communication resource utilization rate of the space-ground integrated network is improved, and the user experience is improved.
The service transmission method of the integrated network of heaven and earth provided by the present invention is further described in detail with reference to fig. 3-4, fig. 3 is a schematic diagram of a system architecture of the integrated network of heaven and earth provided by the present invention, and fig. 4 is a signaling flow diagram of the service transmission method of the integrated network of heaven and earth provided by the present invention; the service transmission method of the integrated network in heaven and earth provided by this embodiment is applied to the integrated network system in heaven and earth, and the system includes: a terminal, a base station, a satellite, a multi-connection gateway, and a core network. As shown in fig. 3, a ground link is provided between the base station and the multi-connection gateway, an air-ground link is provided between the satellite and the multi-connection gateway, and the multi-connection gateway is connected to the core network.
As shown in fig. 4, the service transmission method of the integrated network in heaven and earth provided by this embodiment relates to data interaction among a terminal, a base station, a satellite, a multi-connection gateway, and a core network, and specifically includes the following steps:
s201, the terminal sends a first service request to the base station.
S202, the base station divides the terminals requesting the same first service data into a group and stores the grouping information in the first service request.
In a service area controlled by a base station, a plurality of terminals request services from the base station, if the base station requests services of the terminals, the corresponding service data is sent to the corresponding terminals, and for the terminals requesting the same service data, the base station needs to send the same service data to the plurality of terminals one by one, and needs to occupy a large amount of service traffic of the base station.
In this step, the base station groups terminals requesting the same first service data into a group, and stores grouping information in the first service request, where the grouping information includes: each terminal identifier contained in each group and the first service identifier requested by each group. In this embodiment, the grouping information is not specifically limited, and those skilled in the art may think that the grouping information may further include the number of each group of terminals, the category of the requested first service data, and the like, so that the base station may predict the required data traffic according to the first service request.
S203, the base station judges whether the ground load is smaller than a preset load or not; if yes, executing S204; if not, go to step S208.
The manner of determining the ground load by the base station may be the same as that in the above embodiment, and the base station may preset a preset load, or may change the preset load according to the actual request data of the terminal, which is not limited in this embodiment.
S204, the base station judges whether the first service data exists in the plurality of second service data; if yes, go to S205; if not, go to S206.
On the basis of the above embodiment, the base station caches a plurality of second service data in a base station management and control service area in the first MEC server configured by the base station, where the plurality of second service data are hotspot file data within a preset time period of the management and control service area, and the base station may judge whether the plurality of second service data include the first service data by querying the hotspot file data cached in the first MEC server.
And S205, the base station multicasts each first service data to the corresponding terminal according to the grouping information.
And when the base station judges that the ground load is smaller than the preset load and determines that the first service data exists in the plurality of second service data cached in the first MEC server, the base station determines that the base station executes the operation of sending the first service data to the terminal. And the base station determines the terminals and the first services contained in each group according to the grouping information, and multicasts each first service data to the corresponding terminal.
S206, the base station sends a first service request to the multi-connection gateway.
When the base station determines that the first service data does not exist in the plurality of second service data cached in the first MEC server, the base station sends a first service request to the multi-connection gateway, wherein the first service request may further include an identifier of the base station.
S207, the core network receives the first service request sent by the multi-connection gateway and sends the first service data to the terminal.
The multi-connection gateway is used for sending a first service request to a core network, and the core network sends first service data corresponding to the first service request to the terminal according to the first service request.
S208, the base station judges whether the satellite signal intensity of the satellite is greater than the threshold signal intensity; if yes, go to S209; if not, go to step S214.
And when the base station judges that the ground load of the base station is greater than the preset load, the base station judges whether the satellite signal intensity of the satellite is greater than the threshold signal intensity. Specifically, the base station may periodically determine whether a signal-to-noise ratio of the satellite link is greater than a preset signal-to-noise ratio, and when the signal-to-noise ratio of the satellite link is greater than the preset signal-to-noise ratio, the satellite signal strength of the satellite is greater than a threshold signal strength.
And S209, the base station sends the first service request to the satellite.
And when the base station judges that the satellite signal intensity of the satellite is greater than the threshold signal intensity, determining that the base station executes the operation of sending the first service request to the satellite.
S210, judging whether the first service data exists in the third service data by the satellite; if yes, go to S211; if not, go to step S212.
On the basis of the above embodiment, the satellite configures a second MEC server in which the base station caches a plurality of third service data in a management and control service area, where the plurality of third service data are hotspot file data within a preset time period of the management and control service area, and the satellite may judge whether the plurality of third service data include the first service data by querying the hotspot file data cached in the second MEC server.
And S211, the satellite sends the first service data to the terminal.
When the satellite determines that the first service data exists in the plurality of third service data cached in the second MEC server, the satellite may determine the terminal and the first service included in each group according to the grouping information in the first service request, and multicast each first service data to the respective corresponding terminal.
S212, the satellite sends a first service request to the multi-connection gateway.
And when the satellite determines that the first service data does not exist in the plurality of third service data cached in the second MEC server, sending a first service request to the multi-connection gateway, wherein the first service request may further include the identifier of the base station.
The multi-connection gateway provided in this embodiment has the function of simultaneously carrying a service request sent by a base station in a terrestrial network, and also can carry a service request sent by a satellite in a satellite network, and also has the function of intelligently distinguishing whether the service request comes from the satellite or the base station.
S213, the core network receives the first service request sent by the multi-connection gateway and sends the first service data to the terminal.
The method of S213 is the same as the method of S207, and reference may be specifically made to the related description of S207, which is not repeated herein.
S214, the base station queues the first service until the ground load is smaller than the preset load.
When the base station determines that the ground load is larger than the preset load and the satellite signal strength of the satellite is smaller than the threshold signal strength, the base station queues the first service request until the ground load is smaller than the preset load due to the fact that the load of the base station is overlarge, and when the base station determines that the ground load is smaller than the preset load, the base station determines that the base station performs the operation of sending the first service data to the terminal.
In the embodiment, the base station judges whether the base station performs the operation of sending the first service data to the terminal or determines that the base station performs the operation of sending the first service request to the satellite according to the ground load information and the satellite signal strength information of the satellite, so that the communication resource utilization rate of the space-ground integrated network is improved, and the user experience is improved; the base station requests terminals with the same first service data to be divided into a group, and when the first service data is cached in an MEC server configured in the base station or the satellite, the first service data is multicast to the corresponding terminals, so that the service flow is reduced; in addition, when the first service data does not exist in the MEC server configured by the base station or the satellite, the first service request is sent to the core network through the multi-connection gateway, so that the core network sends the first service data to the terminal, a user can obtain the service data in time, and the user experience is further improved.
Fig. 5 is a schematic structural diagram of a base station according to the present invention, as shown in fig. 5, the base station 300 includes: the device comprises a receiving module 301, a first judging module 302, a first sending module 303 and a second sending module 304.
A receiving module 301, configured to receive a first service request sent by a terminal;
a first determining module 302, configured to determine, according to a ground load of a base station, whether the base station sends first service data corresponding to a first service request to a terminal;
a first sending module 303, configured to send, when a determination result of the determining module is yes, first service data to the terminal according to the first service request, where the base station is configured with a first mobile edge computing server MEC, the first MEC stores a plurality of second service data, each second service data is service data whose number of requests is greater than a preset number of times within a preset time period, and the first service data is service data in the plurality of second service data;
the second sending module 304 is configured to send the first service request to the satellite when the determination result of the determining module is negative, so that the satellite sends the first service data to the terminal according to the first service request, the satellite is configured with a second MEC, third service data is stored in the second MEC, and the third service data is service data in which the number of times of request is greater than a preset number of times within a preset time period.
The principle and technical effect of the base station provided in this embodiment are similar to those of the service transmission method of the heaven-earth integrated network, and are not described herein again.
Fig. 6 is a schematic structural diagram of a base station provided in the present invention, and as shown in fig. 6, the base station 300 further includes: a grouping module 305.
A grouping module 305, configured to group terminals requesting the same first service data, and store grouping information in the first service request.
Optionally, the first sending module 303 is further configured to multicast, according to the grouping information, each first service data to a corresponding terminal.
Optionally, the first determining module 302 is further configured to determine whether the ground load is smaller than a preset load;
if so, the base station determines that the base station performs the operation of sending the first service data to the terminal;
if not, judging whether the satellite signal intensity of the satellite is greater than the threshold signal intensity;
and if so, determining that the base station performs the operation of sending the first service request to the satellite.
Optionally, the base station 300 further includes: a second decision module 306.
A second determining module 306, configured to determine whether the first service data exists in the plurality of second service data;
if so, sending the first service data to the terminal;
if not, sending the first service request to the multi-connection gateway so that the multi-connection gateway sends the first service request to the core network, and the core network sends the first service data to the terminal.
Fig. 7 is a schematic structural diagram of a base station according to the present invention, and as shown in fig. 7, the base station 400 includes: a memory 401 and at least one processor 402.
A memory 401 for storing program instructions.
The processor 402 is configured to implement the service transmission method of the space-ground integrated network in this embodiment when the program instruction is executed, and specific implementation principles may be referred to the foregoing embodiments, which are not described herein again.
The base station 400 may also include an input/output interface 403.
The input/output interface 403 may include a separate output interface and input interface, or may be an integrated interface that integrates input and output. The output interface is used for outputting data, the input interface is used for acquiring input data, the output data is a general name output in the method embodiment, and the input data is a general name input in the method embodiment.
Fig. 8 is a schematic structural diagram of a satellite according to the present invention, as shown in fig. 5, the satellite 500 includes: a receiving module 501 and a sending module 502.
A receiving module 501, configured to receive a first service request sent by a terminal;
the sending module 502 is configured to send first service data corresponding to the first service request to the terminal according to the first service request, the satellite is configured with a second MEC, a plurality of third service data are stored in the second MEC, each third service data is service data whose request frequency is greater than a preset frequency within a preset time period, and the first service data is service data in the plurality of third service data.
The principle and technical effect of the service transmission method of the satellite and the space-ground integrated network provided by this embodiment are similar, and are not described herein again.
Fig. 9 is a schematic structural diagram of a satellite according to the present invention, and as shown in fig. 6, the satellite 500 further includes: a decision block 503.
A determining module 503, configured to determine whether the first service data exists in the plurality of third service data;
if so, sending the first service data to the terminal;
if not, sending the first service request to the multi-connection gateway so that the multi-connection gateway sends the first service request to the core network, and the core network sends the first service data to the terminal.
Fig. 10 is a schematic structural diagram of a satellite according to the present invention, and as shown in fig. 7, the satellite 600 includes: a memory 601 and at least one processor 602.
A memory 601 for storing program instructions.
The processor 602 is configured to implement the service transmission method of the space-ground integrated network in this embodiment when the program instruction is executed, and specific implementation principles may be referred to the foregoing embodiments, which are not described herein again.
The satellite 600 may also include an input/output interface 603.
The input/output interface 603 may include a separate output interface and input interface, or may be an integrated interface that integrates input and output. The output interface is used for outputting data, the input interface is used for acquiring input data, the output data is a general name output in the method embodiment, and the input data is a general name input in the method embodiment.
The present invention also provides a readable storage medium, in which execution instructions are stored, and when the execution instructions are executed by at least one processor of a base station or a satellite, and when the execution instructions are executed by the processor, the service transmission method of the space-ground integrated network in the above embodiment is implemented.
The present invention also provides a program product comprising execution instructions stored in a readable storage medium. The at least one processor of the base station or the satellite may read the execution instruction from the readable storage medium, and the execution of the execution instruction by the at least one processor causes the base station or the satellite to implement the service transmission method of the space-ground integrated network provided by the various embodiments described above.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed 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 can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In the foregoing embodiments of the network device or the terminal device, it should be understood that the Processor may be a Central Processing Unit (CPU), or may be other general-purpose processors, Digital Signal Processors (DSP), Application Specific Integrated Circuits (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present application may be embodied directly in a hardware processor, or in a combination of the hardware and software modules in the processor.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A service transmission method of a space-ground integrated network is applied to a space-ground integrated network system, the system comprises a terminal, a base station and a satellite, an air-ground link is arranged between the base station and the satellite, and the method is characterized by comprising the following steps:
the base station receives a first service request sent by the terminal;
the base station judges whether the base station sends first service data corresponding to the first service request to the terminal or not according to the ground load of the base station;
if so, the base station sends the first service data to the terminal according to the first service request, the base station is configured with a first mobile edge computing MEC server, a plurality of second service data are stored in the first MEC server, each second service data is service data of which the request times are greater than the preset times within a preset time period, and the first service data is service data in the plurality of second service data;
if not, the base station sends the first service request to the satellite so that the satellite sends the first service data to the terminal according to the first service request, the satellite is provided with a second MEC server, a plurality of third service data are stored in the second MEC server, each third service data is service data with the request times larger than the preset times within a preset time period, and the first service data is service data in the plurality of third service data; the second MEC server has a smaller storage capacity and computing power than the first MEC server.
2. The service transmission method according to claim 1, wherein before the base station determines whether to send the first service data corresponding to the first service request to the terminal according to the ground load of the base station, the method further includes:
the base station divides the terminals requesting the same first service data into a group and stores the grouping information in the first service request;
the base station sends the first service data to the terminal, and the method comprises the following steps:
and the base station multicasts the first service data to the corresponding terminal according to the grouping information.
3. The service transmission method according to claim 1, wherein the determining, by the base station, whether the base station sends the first service data corresponding to the first service request to the terminal according to the ground load of the base station includes:
the base station judges whether the ground load is smaller than a preset load or not;
if so, the base station determines that the base station performs the operation of sending the first service data to the terminal;
if not, judging whether the satellite signal intensity of the satellite is greater than the threshold signal intensity;
and if so, determining that the base station executes the operation of sending the first service request to the satellite.
4. The service transmission method according to claim 1 or 2, wherein the system further includes a multi-connection gateway and a core network, a ground link is provided between the base station and the multi-connection gateway, and the multi-connection gateway is connected to the core network;
before the base station sends the first service data to the terminal according to the first service request, the method further includes:
the base station judges whether the first service data exists in a plurality of second service data or not;
if so, sending the first service data to the terminal;
if not, the first service request is sent to the multi-connection gateway, so that the multi-connection gateway sends the first service request to the core network, and the core network sends the first service data to the terminal.
5. A service transmission method of a space-ground integrated network is applied to a space-ground integrated network system, the system comprises a terminal, a base station and a satellite, an air-ground link is arranged between the base station and the satellite, and the method is characterized by comprising the following steps:
a satellite receives a first service request sent by a base station;
the satellite sends first service data corresponding to the first service request to a terminal according to the first service request, the satellite is provided with a second MEC server, a plurality of third service data are stored in the second MEC server, each third service data is service data with the request times larger than the preset times within a preset time period, and the first service data is service data in the plurality of third service data;
the system also comprises a multi-connection gateway and a core network, wherein an air-ground link is arranged between the satellite and the multi-connection gateway, and the multi-connection gateway is connected with the core network; the first service request comprises grouping information of the terminal;
before the satellite sends the first service data corresponding to the first service request to the terminal according to the first service request, the method further includes:
the satellite judges whether the first service data exists in a plurality of third service data or not;
if so, sending the first service data to the terminal;
if not, the first service request is sent to the multi-connection gateway, so that the multi-connection gateway sends the first service request to the core network, and the core network sends the first service data to the terminal.
6. A base station, comprising:
the receiving module is used for receiving a first service request sent by a terminal;
the first judging module is used for judging whether the base station sends the first service data corresponding to the first service request to the terminal according to the ground load of the base station;
a first sending module, configured to send the first service data to the terminal according to the first service request when a determination result of the determining module is yes, where the base station is configured with a first mobile edge computing MEC server, the first MEC server stores a plurality of second service data, each second service data is a service data whose request frequency is greater than a preset frequency within a preset time period, and the first service data is a service data in the plurality of second service data;
the second sending module is configured to send the first service request to a satellite when the determination result of the determining module is negative, so that the satellite sends the first service data to the terminal according to the first service request, the satellite is configured with a second MEC server, third service data is stored in the second MEC server, and the third service data is service data in which the number of times of request is greater than a preset number of times within a preset time period; the second MEC server has a smaller storage capacity and computing power than the first MEC server.
7. A base station, comprising: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executing the computer-executable instructions stored by the memory causes one of the base stations to perform the method of any one of claims 1-4.
8. A satellite, comprising: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executing the computer-executable instructions stored by the memory causes one of the satellites to perform the method of claim 5.
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| CN112124640B (en) * | 2020-09-29 | 2022-03-15 | 中国科学院微小卫星创新研究院 | High-value space facility autonomous survival method and system based on multi-element situation perception |
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