CN110535897B - Data caching method and device for heaven-earth integrated network - Google Patents
Data caching method and device for heaven-earth integrated network Download PDFInfo
- Publication number
- CN110535897B CN110535897B CN201810517662.4A CN201810517662A CN110535897B CN 110535897 B CN110535897 B CN 110535897B CN 201810517662 A CN201810517662 A CN 201810517662A CN 110535897 B CN110535897 B CN 110535897B
- Authority
- CN
- China
- Prior art keywords
- terminal
- service data
- base station
- ground
- ground base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 57
- 238000004891 communication Methods 0.000 claims abstract description 50
- 238000012545 processing Methods 0.000 claims description 6
- 239000000872 buffer Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 10
- 238000004590 computer program Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a data caching method and device of a space-ground integrated network, which are characterized in that a ground base station counts service data of terminals in a coverage range in a preset time period, the counted service data is sent to an upper-level ground area data center, so that the ground area data center pushes the counted service data to related terminals, and high-frequency hot data in an area is determined according to feedback obtained from the terminals, so that the ground base station and a satellite are informed to cache the high-frequency hot data, the cache hit rate of the ground base station and the satellite is improved, when the terminals send service requests, the ground base station side or the satellite side can directly send the service data corresponding to the service requests to the terminals, and the communication efficiency of the space-ground integrated network is improved.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a data caching method and device for a heaven-earth integrated network.
Background
The space-ground integrated network makes full use of the wide service area of the satellite network and the complementary advantages of user dense adaptive cloud access of the ground network, can provide the most effective coverage for the sparsely populated area, and can provide high-capacity and economic services for the densely populated area. In the world-wide integrated network, a user can communicate with a satellite or a ground network by using a universal terminal to acquire network resources, all-weather and all-region seamless coverage of a high-speed mobile broadband network is realized, and the method becomes a research hotspot in the current communication field.
In the prior art, a ground base station or a satellite of a space-ground integrated communication system is used as an access device of a user terminal connected to a network side, and when receiving a service resource request sent by a user, service data corresponding to the service resource request is inquired on a mobile edge computing MEC server of each user, and if the inquiry is not successful, the service data needs to be requested to a core network, which results in low communication efficiency and poor user experience. In addition, there is a case where different users repeatedly request the same service resource, and if the service resource does not exist in the MEC server, the ground base station or the satellite needs to repeatedly send a request to the core network, thereby occupying a large amount of link resources.
Therefore, it is desirable to provide a data caching method to improve the cache hit rate of the MEC server on the ground base station or the satellite.
Disclosure of Invention
The invention provides a data caching method and device for a space-ground integrated network, which improve the cache hit rate of an MEC server on a ground base station or a satellite and achieve the aim of high-efficiency communication.
The first aspect of the present invention provides a data caching method for a space-ground integrated network, including:
the method comprises the steps that a ground base station determines first service data acquired by each first terminal through the ground base station within a preset time period, wherein the first service data is service data of which the request frequency of the first terminal is more than or equal to a preset frequency within the preset time period;
the ground base station sends the first service data of each first terminal to a ground area data center, so that the ground area data center pushes the first service data of the first terminal to a second terminal corresponding to each first terminal, and determines second service data according to the received feedback information of each second terminal; the user of the second terminal has a social relationship with the user of the first terminal; the feedback information is used for feeding back the first service data acquired by the second terminal;
and the ground base station receives and caches second service data sent by the ground area data center, wherein the second service data is service data of which the feedback frequency is greater than or equal to a preset feedback frequency in each first service data.
Optionally, before the ground base station sends the first service data of each first terminal to the ground area data center, the method further includes:
the ground base station determines second terminals corresponding to the first terminals according to communication conditions of the first terminals within the coverage range of the ground base station in a preset time period, and establishes a terminal social relation table, wherein the terminal social relation table comprises the first terminals and the second terminals corresponding to the first terminals;
and the ground base station sends the terminal social relationship table to a ground area data center so that the ground area data center pushes first service data of the first terminal to a second terminal corresponding to each first terminal according to the terminal social relationship table.
Optionally, the determining, by the ground base station, a second terminal corresponding to each first terminal according to a communication condition of each first terminal in a coverage area of the ground base station in a preset time period includes:
the ground base station acquires a third terminal corresponding to each first terminal, and a user of the third terminal has a social relationship with a user of the first terminal;
the ground base station determines a third terminal with the communication frequency of each first terminal being greater than or equal to the average communication frequency as a second terminal corresponding to each first terminal according to the communication frequencies of each first terminal and the third terminal in a preset time period; and the user of the second terminal has friend relationship and/or community relationship with the user of the first terminal.
Optionally, the receiving and caching, by the ground base station, second service data sent by the ground area data center includes:
and the ground base station receives second service data sent by the ground area data center and caches the second service data to a mobile edge computing MEC server deployed on the ground base station.
The second aspect of the present invention provides a data caching method for a space-ground integrated network, including:
the method comprises the steps that a ground area data center receives first service data of each first terminal sent by a ground base station, the first terminals are terminals within the coverage range of the ground base station, and the first service data are service data of which the request frequency of the first terminals in a preset time period is greater than or equal to a preset frequency;
the ground area data center pushes first service data of the first terminal to a second terminal corresponding to each first terminal; the user of the second terminal has a social relationship with the user of the first terminal;
the ground area data center determines second service data according to the received feedback information of each second terminal; the feedback information is used for feeding back the first service data acquired by the second terminal, and the second service data is service data of which the feedback frequency is greater than or equal to a preset feedback frequency in each first service data;
and the ground area data center sends the second service data to the ground base station.
Optionally, after the ground area data center determines the second service data according to the received feedback information of each second terminal, the method further includes:
and the ground area data center sends the second service data to an aerial data center so that the aerial data center forwards the second service data to a satellite, and the satellite caches the second service data to an MEC server deployed on the satellite.
A third aspect of the present invention provides a ground base station, comprising:
the determining module is used for determining first service data acquired by each first terminal through a ground base station within a preset time period, wherein the first service data is service data of which the request frequency of the first terminal is greater than or equal to a preset frequency within the preset time period;
the sending module is used for sending the first service data of each first terminal to a ground area data center so that the ground area data center pushes the first service data of the first terminal to a second terminal corresponding to each first terminal, and determines second service data according to the received feedback information of each second terminal; the user of the second terminal has a social relationship with the user of the first terminal; the feedback information is used for feeding back the first service data acquired by the second terminal;
and the receiving and caching module is used for receiving and caching the second service data sent by the ground area data center, wherein the second service data is service data of which the feedback frequency is greater than or equal to a preset feedback frequency in each first service data.
Optionally, the determining module is further configured to determine, according to a communication condition of each first terminal in a coverage area of the ground base station in a preset time period, a second terminal corresponding to each first terminal;
the ground base station further comprises:
the system comprises an establishing module, a judging module and a judging module, wherein the establishing module is used for establishing a terminal social relationship table, and the terminal social relationship table comprises each first terminal and a second terminal corresponding to each first terminal;
the sending module is configured to send the terminal social relationship table to a ground area data center, so that the ground area data center pushes first service data of the first terminal to a second terminal corresponding to each first terminal according to the terminal social relationship table.
Optionally, the ground base station further includes:
the acquisition module is used for acquiring a third terminal corresponding to each first terminal, and a user of the third terminal has a social relationship with a user of the first terminal;
the determining module is specifically configured to determine, according to communication frequencies of the first terminals and the third terminals in a preset time period, a third terminal, of which the communication frequency is greater than or equal to an average communication frequency, as a second terminal corresponding to each first terminal; and the user of the second terminal has friend relationship and/or community relationship with the user of the first terminal.
Optionally, the receiving and caching module is specifically configured to receive second service data sent by the ground area data center, and cache the second service data in a mobile edge computing MEC server deployed on the ground base station.
A fourth aspect of the present invention provides a ground area data center, comprising:
the system comprises a receiving module, a processing module and a processing module, wherein the receiving module is used for receiving first service data of each first terminal sent by a ground base station, the first terminal is a terminal within the coverage range of the ground base station, and the first service data is service data of which the request frequency of the first terminal is greater than or equal to a preset frequency within a preset time period;
the pushing module is used for pushing the first service data of the first terminal to the second terminal corresponding to each first terminal; the user of the second terminal has a social relationship with the user of the first terminal;
a determining module, configured to determine second service data according to the received feedback information of each second terminal; the feedback information is used for feeding back the first service data acquired by the second terminal, and the second service data is service data of which the feedback frequency is greater than or equal to a preset feedback frequency in each first service data;
and the sending module is used for sending the second service data to the ground base station.
Optionally, the sending module is further configured to send the second service data to an aerial data center, so that the aerial data center forwards the second service data to a satellite, and the satellite caches the second service data to an MEC server deployed on the satellite.
A fifth aspect of the present invention provides a ground 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 terrestrial base stations to perform the method of any of the first aspects.
A sixth aspect of the present invention provides a ground area data center 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 any of the second aspects.
The embodiment of the invention provides a data caching method and device of a space-ground integrated network, which are characterized in that a ground base station counts service data of each terminal in a coverage range in a preset time period, the counted service data are sent to an upper-level ground area data center, so that the ground area data center pushes the counted service data to related terminals, and high-frequency hot spot data in an area are determined according to feedback obtained from each terminal, so that the ground base station and a satellite are informed to cache the high-frequency hot spot data, the cache hit rate of the ground base station and the satellite is improved, when the terminal sends a service request, the ground base station side or the satellite side can directly send the service data corresponding to the service request to the terminal, and the communication efficiency of the space-ground integrated network is improved.
Drawings
Fig. 1 is a schematic system architecture diagram of a world-wide integrated network according to an embodiment of the present invention;
fig. 2 is a schematic flow chart illustrating a data caching method of a world-wide integrated network according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a data caching method of a world-wide integrated network according to another embodiment of the present invention;
fig. 4 is a schematic structural diagram of a ground base station according to an embodiment of the present invention;
fig. 5 is a schematic hardware structure diagram of a ground base station according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a ground area data center according to an embodiment of the present invention;
fig. 7 is a schematic hardware structure diagram of a ground area data center according to an embodiment of 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.
The terms "first," "second," and the like in the description and in the claims, and in the drawings described above, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.
Fig. 1 is a schematic diagram of a system architecture of a space-ground integrated network provided in an embodiment of the present invention, and as shown in fig. 1, the space-ground integrated network system includes a terminal 1, a ground base station 2, a ground area data center 3, an air data center 4, and a satellite 5. Wherein the terminal 1 may communicate with the core network via a terrestrial base station 2 or a satellite 5. The data caching method provided by the embodiment relates to the following three communication links:
a first communication link is arranged between the ground area data center 3 and the plurality of ground base stations 2, and the plurality of ground base stations 2 periodically send high-frequency service data of each terminal to the ground area data center 3;
a second communication link is arranged between the ground area data center 3 and the air data center 4, and the ground area data center 3 periodically transmits high-frequency service data in the area to the air data center 4.
A third communication link is arranged between the air data center 4 and the satellite 5, and the air data center 4 periodically forwards the high-frequency service data in the region to the satellite 5.
According to the embodiment, the service data of each terminal in the coverage range is counted by the ground base station in the preset time period, the counted service data is sent to the upper-level ground area data center, so that the ground area data center pushes the counted service data to the related terminals, the high-frequency hot spot data in the area is determined according to the feedback obtained from each terminal, the ground base station and the satellite are notified to cache the high-frequency hot spot data, the cache hit rate of the ground base station and the satellite is improved, when the terminal sends a service request, the ground base station side or the satellite side can directly send the service data corresponding to the service request to the terminal, and the communication efficiency of the space-ground integrated network is improved.
The data caching method of the heaven-earth integrated network provided by the invention is explained in detail by specific embodiments.
Fig. 2 is a schematic flow chart of a data caching method of a space-ground integrated network according to an embodiment of the present invention, and as shown in fig. 2, the data caching method of the space-ground integrated network according to the embodiment relates to data interaction between a ground base station and a ground area data center, between the ground area data center and an air data center, and between the air data center and a satellite, and specifically includes the following steps:
s201, the ground base station determines first service data acquired by each first terminal through the ground base station within a preset time period;
the first service data is service data of which the request frequency of the first terminal is greater than or equal to a preset frequency within a preset time period; the first terminal is a terminal within the coverage of a terrestrial base station.
The ground base station of this embodiment determines, according to the history of the service data request of each first terminal within the coverage area of the ground base station, first service data in which the request frequency obtained by each first terminal through the ground base station within a preset time period is greater than or equal to a preset frequency.
Specifically, the first service data includes audio service data, video service data, and text service data. Illustratively, the audio service data is specifically classified into classical, pop, jazz, rock, hip-hop, japanese-korean, chinese, and the like; the video service data is divided into entertainment, record, sports and the like; the text service data is specifically divided into education, official documents, electronic magazines, electronic novels, and the like.
In this embodiment, the ground base station determines that the first service data of each first terminal is not limited to only one service data, for example, if the request frequency of the video service data and the request frequency of the text service data, which are acquired by the first terminal through the ground base station within a preset time period, are both greater than or equal to the preset request frequency of the ground base station, it is determined that the first service data of the first terminal includes at least two service data.
S202, the ground base station sends first service data of each first terminal to a ground area data center;
after determining the first service data of each first terminal, the ground base station does not directly cache the first service data to the MEC server deployed on the ground base station. Because the memory of the MEC server is limited, in order to improve the hit rate of the cache, the ground base station firstly sends the determined first service data of each first terminal to the ground area data center to obtain the high-frequency service data analyzed by the ground area data center, and caches the high-frequency service data to the MEC server, so that the terminal can directly obtain the service data corresponding to the service request at the ground base station side, and the network communication efficiency is improved.
S203, the ground area data center pushes first service data of the first terminal to a second terminal corresponding to each first terminal;
the user of the second terminal and the user of the first terminal have a social relationship;
the ground area data center of this embodiment obtains the social relationship table of each first terminal, where the social relationship table includes a second terminal list having a social relationship with each first terminal. And with each first terminal as a reference, pushing first service data of the first terminal in a preset time period to a second terminal corresponding to each first terminal. It should be noted that the ground area data center may obtain the social relationship table of the terminal from the core network side, or from the ground base station side, and the embodiment is not particularly limited to how the ground area data center obtains the social relationship table of the terminal.
The social relationship between the users includes a friend relationship and/or a social relationship, which is not specifically limited in this embodiment. It should be noted that the friend relationship and/or the social relationship of the user may change over time, and therefore, the ground base station side or the core network side may periodically send the updated social relationship table of each first terminal to the ground area data center.
For example, the terrestrial base station has sent the first service data (e.g., video service data a) of the first terminal a1 and the social relationship table of the first terminal a1 to the terrestrial area data center, and determines the second terminal (e.g., the second terminal B1, B2 … Bn) having a social relationship with the first terminal a1 according to the social relationship table, then the terrestrial area data center pushes the video service data a of the first terminal a1 to the second terminal B1, B2 … Bn through broadcasting. Similarly, for the first terminals a2, A3 … An, the ground area data center pushes the first service data of each first terminal a2, A3 … An to the second terminal corresponding to each first terminal a2, A3 … An in the same manner. Through the pushing process, the ground area data center can acquire the feedback information of the second terminal corresponding to each first terminal in real time, and further execute S205 according to the acquired feedback information.
S204, the second terminal sends feedback information to the ground area data center;
s205, the ground area data center determines second service data according to the received feedback information of each second terminal;
the feedback information is used for feeding back the first service data acquired by the second terminal, and the second service data is service data of which the feedback frequency is greater than or equal to the preset feedback frequency in each first service data.
After the ground area data center of this embodiment broadcasts and pushes the first service data of each first terminal, when the second terminal corresponding to each first terminal receives the first service data, if the second terminal is interested in the first service data, the ground area data center sends feedback information to obtain the first service data.
Specifically, each time the ground area data center receives one feedback message, the feedback frequency of the first service of the first terminal is added by 1, the feedback frequency of the first service data is counted in a preset time period, and if the feedback frequency is greater than or equal to the preset feedback frequency, the first service data is determined to be high-frequency service data, namely, second service data.
And S206, the ground area data center sends second service data to the ground base station.
And S207, the ground base station receives and caches the second service data sent by the ground area data center.
Specifically, the ground base station receives second service data sent by the ground area data center, and caches the second service data in an MEC server deployed on the ground base station. The high-frequency hot spot data of the current area in the current time period is cached in the MEC server, so that after a terminal in the coverage range of the ground base station initiates a service data request, the ground base station directly acquires the service data from the MEC server deployed on the ground base station, the communication efficiency is improved, and the problem of communication delay caused by the fact that the ground base station acquires the service data from a core network is solved.
The ground base station determines first service data acquired by each first terminal through the ground base station within a preset time period, sends the first service data of each first terminal to a ground area data center, the ground area data center pushes the first service data to a second terminal corresponding to each first terminal, determines second service data with a feedback frequency greater than or equal to a preset feedback frequency in each first service data according to received feedback information of each second terminal, and the ground base station receives and caches the second service data determined by the ground area data center. By the method, the high-frequency hot spot data of the current area in the current time period is cached at the ground base station side of the integrated network, and the problem of communication delay caused by the fact that the ground base station needs to acquire the data from the core network after receiving the service request of the terminal is solved.
On the basis of the above embodiments, this embodiment describes in detail how the ground base station determines the second terminal corresponding to each first terminal, and how to implement synchronization of the space-ground integrated network service data, so as to implement caching of the high-frequency hot spot service data in the MEC server deployed on the ground base station or the satellite, thereby improving the cache hit rate of the space-ground integrated network system on the ground base station side or the satellite side, and thus improving the overall communication efficiency of the network.
Fig. 3 is a schematic flow chart of a data caching method for a space-ground integrated network according to another embodiment of the present invention, and as shown in fig. 3, the data caching method for the space-ground integrated network according to the present embodiment specifically includes the following steps:
s301, the ground base station determines a second terminal corresponding to each first terminal according to the communication condition of each first terminal in the coverage area of the ground base station in a preset time period, and establishes a terminal social relation table;
the terminal social relationship table comprises each first terminal and a second terminal corresponding to each first terminal. And determining a second terminal list with social relations with the first terminals according to the terminal social relation table.
Specifically, the ground base station acquires a third terminal corresponding to each first terminal; the user of the third terminal and the user of the first terminal have a social relationship;
if the first terminal and the third terminal have communicated with each other in the preset time period, the ground base station determines that the first terminal and the third terminal have a social relationship, and the number of times of communication between the first terminal and the third terminal may be only one or multiple, which is not limited in this embodiment.
And the ground base station determines a third terminal with the communication frequency greater than or equal to the average communication frequency of each first terminal as a second terminal corresponding to each first terminal according to the communication frequencies of each first terminal and the third terminal in a preset time period. And the user of the second terminal has a friend relationship and/or a community relationship with the user of the first terminal. In particular, the method comprises the following steps of,
if the user of the first terminal is a common user or a community leader user, and the communication frequency of the first terminal and the second terminal in a preset time period is greater than or equal to the average communication frequency in the area, the ground base station determines that the user of the first terminal and the user of the second terminal have a friend relationship;
if the user of the first terminal is a community leader, the community leader refers to a leader with high popularity in the network, such as a corporate family, a recreational star, a sports star, a scientist, and the like. And the ground base station determines a second terminal with the access frequency of accessing the social network site of the first terminal in a preset time period being more than or equal to the average access frequency, and then determines that the user of the first terminal and the user of the second terminal have a social relationship.
Through the process, the second terminals corresponding to the first terminals of the ground base station are determined, and the third terminals with the communication frequency or the access frequency lower than the average communication frequency or the average access frequency in the preset time period are screened out, so that the ground base station only pushes the high-frequency service data of the first terminals to the user terminals with friend relationships and/or community relationships with the first terminal users, and a large amount of invalid pushing is prevented from occupying channel resources.
S302, the ground base station sends a terminal social relation table to a ground area data center;
the ground base station sends a terminal social relationship table comprising the first terminals and the second terminals corresponding to the first terminals to the ground area data center, so that the ground area data center pushes the high-frequency service data of the first terminals to the user terminals having friend relationships and/or community relationships with the first terminal users according to the terminal social relationship table, and the feedback conditions of the high-frequency service data on the side of the second terminals are counted.
S303, the ground base station determines first service data acquired by each first terminal through the ground base station within a preset time period;
s304, the ground base station sends first service data of each first terminal to a ground area data center;
it should be noted that, in this embodiment, the execution sequence of S301 and S303 is not particularly limited, and S301 and S303 may be executed simultaneously or sequentially. Correspondingly, the execution sequence of S302 and S304 is not specifically limited in this embodiment, and S302 and S304 may be executed simultaneously or sequentially.
S305, the ground area data center pushes first service data of the first terminal to a second terminal corresponding to each first terminal;
s306, the second terminal sends feedback information to the ground area data center;
s307, the ground area data center determines second service data according to the received feedback information of each second terminal;
s308, the ground area data center sends second service data to the ground base station;
s309, the ground base station receives and caches the second service data sent by the ground area data center.
S303 to S309 of this embodiment are the same as S201 to S207 of the above embodiments, and the implementation principle and the technical effect are not described herein again.
S310, the ground area data center sends second service data to the air data center;
as will be understood by those skilled in the art, a satellite coverage area includes a plurality of ground base stations, and in order to achieve data synchronization of the space-ground integrated network system, the satellite should simultaneously buffer high-frequency service data of the plurality of ground base stations in the satellite coverage area. In this embodiment, data synchronization between the satellite and the ground base station is achieved through interaction between the ground area data center and the air data center.
Specifically, the air data center manages a plurality of satellites simultaneously, the ground area data center manages a plurality of ground base stations simultaneously, and communication links are arranged between the air data center and the ground area data centers. In this embodiment, the plurality of ground area data centers periodically transmit the second service data determined by each ground area data center to the air data center, so that the air data center periodically updates the second service data of the ground base station in each satellite coverage area.
S311, the aerial data center forwards the second service data to the satellite;
and the air data center determines a ground area data center corresponding to the ground base station in each satellite coverage range according to the ground base station in each satellite coverage range, and forwards second service data corresponding to the ground base station in each satellite coverage range to each satellite according to second service data sent by the ground area data center.
And S312, caching the second service data into an MEC server deployed on the satellite by the satellite.
The second service data forwarded by the air data center ensures that the service data cached on each satellite is high-frequency service data in the current time period, and after a terminal in the coverage area of the satellite initiates a service data request, the satellite directly acquires the service data from an MEC server deployed on the satellite, so that the communication efficiency is improved, and the problem of communication delay caused by the satellite acquiring the service data from a core network is solved.
In the data caching method for the space-ground integrated network provided by this embodiment, the ground base station determines first service data acquired by each first terminal through the ground base station within a preset time period, and sends the first service data of each first terminal to the ground area data center, the ground area data center pushes the first service data to the second terminal corresponding to each first terminal, and determines second service data with a feedback frequency greater than or equal to a preset feedback frequency in each first service data according to the received feedback information of each second terminal, and the ground area data center sends the second service data to the ground base station and the satellite respectively, so that the MEC servers deployed on the ground base station and the satellite cache high-frequency service data within respective coverage ranges. By the method, the high-frequency hot spot data of the coverage range of the ground base station side and the satellite side of the space-ground integrated network are cached in the ground base station side and the satellite side of the space-ground integrated network at the current time, and the problem of communication delay caused by the fact that the ground base station and the satellite need to acquire the data from a core network after receiving the service request of the terminal is solved.
Fig. 4 is a schematic structural diagram of a terrestrial base station according to an embodiment of the present invention, and as shown in fig. 4, the terrestrial base station 40 according to the embodiment includes:
a determining module 41, configured to determine first service data acquired by each first terminal through a ground base station within a preset time period, where the first service data is service data in which a request frequency of the first terminal within the preset time period is greater than or equal to a preset frequency;
a sending module 42, configured to send the first service data of each first terminal to a ground area data center, so that the ground area data center pushes the first service data of each first terminal to a second terminal corresponding to each first terminal, and determines second service data according to received feedback information of each second terminal; the user of the second terminal has a social relationship with the user of the first terminal; the feedback information is used for feeding back the first service data acquired by the second terminal;
the receiving and caching module 43 is configured to receive and cache the second service data sent by the ground area data center, where the second service data is service data with a feedback frequency greater than or equal to a preset feedback frequency in each of the first service data.
Optionally, the determining module 41 is further configured to determine, according to a communication condition of each first terminal in a coverage area of the ground base station in a preset time period, a second terminal corresponding to each first terminal;
the ground base station 40 further includes:
an establishing module 44, configured to establish a terminal social relationship table, where the terminal social relationship table includes each first terminal and a second terminal corresponding to each first terminal;
the sending module 42 is configured to send the terminal social relationship table to a ground area data center, so that the ground area data center pushes the first service data of the first terminal to the second terminal corresponding to each first terminal according to the terminal social relationship table.
Optionally, the ground base station 40 further includes:
an obtaining module 45, configured to obtain a third terminal corresponding to each first terminal, where a social relationship exists between a user of the third terminal and a user of the first terminal;
the determining module 41 is specifically configured to determine, according to communication frequencies of the first terminals and the third terminals in a preset time period, that a third terminal whose communication frequency is greater than or equal to an average communication frequency of each first terminal is a second terminal corresponding to each first terminal; and the user of the second terminal has friend relationship and/or community relationship with the user of the first terminal.
Optionally, the receiving and caching module 43 is specifically configured to receive second service data sent by the ground area data center, and cache the second service data in a mobile edge computing MEC server deployed on the ground base station.
The ground base station provided in the embodiment of the present invention may be configured to execute the method executed by the ground base station in the above method embodiment, and the implementation principle and the technical effect are similar, which are not described herein again.
Fig. 5 is a schematic diagram of a hardware structure of a terrestrial base station according to an embodiment of the present invention, and as shown in fig. 5, a terrestrial base station 50 according to the embodiment includes: at least one processor 51 and memory 52;
the memory 52 stores computer-executable instructions;
the at least one processor 51 executes computer-executable instructions stored by the memory 52 to cause one of the terrestrial base stations to perform the method of any of the above embodiments.
The ground base station 50 may also include an input/output interface 53.
The input/output interface 53 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.
An embodiment of the present invention further provides a storage medium, where the storage medium includes a computer program, and the computer program is used to implement the data caching method executed by the ground base station in the above embodiment.
Fig. 6 is a schematic structural diagram of a ground area data center according to an embodiment of the present invention, and as shown in fig. 6, a ground area data center 60 according to the embodiment includes:
a receiving module 61, configured to receive first service data of each first terminal sent by a ground base station, where the first terminal is a terminal within a coverage area of the ground base station, and the first service data is service data of which a request frequency of the first terminal in a preset time period is greater than or equal to a preset frequency;
a pushing module 62, configured to push first service data of each first terminal to a second terminal corresponding to the first terminal; the user of the second terminal has a social relationship with the user of the first terminal;
a determining module 63, configured to determine second service data according to the received feedback information of each second terminal; the feedback information is used for feeding back the first service data acquired by the second terminal, and the second service data is service data of which the feedback frequency is greater than or equal to a preset feedback frequency in each first service data;
a sending module 64, configured to send the second service data to the ground base station.
Optionally, the sending module 64 is further configured to send the second service data to an air data center, so that the air data center forwards the second service data to a satellite, and the satellite caches the second service data in an MEC server deployed on the satellite.
The ground area data center provided by the embodiment of the invention can be used for executing the method executed by the ground area data center in the method embodiment, the implementation principle and the technical effect are similar, and the details are not repeated here.
Fig. 7 is a schematic hardware structure diagram of a ground area data center according to an embodiment of the present invention, and as shown in fig. 7, a ground area data center 70 according to this embodiment includes: at least one processor 71 and memory 72;
the memory 72 stores computer-executable instructions;
the at least one processor 71 executes computer-executable instructions stored by the memory 72 to cause one of the ground area data centers to perform a method as in any one of the embodiments described above.
The ground area data center 70 may also include an input/output interface 73.
The input/output interface 73 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.
An embodiment of the present invention further provides a storage medium, where the storage medium includes a computer program, and the computer program is used to implement the data caching method executed by the ground area data center in the above embodiment.
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 there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not implemented. 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 another general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), or the like. 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 invention may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within 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 (10)
1. A data caching method of a heaven and earth integrated network is characterized by comprising the following steps:
the method comprises the steps that a ground base station determines first service data acquired by each first terminal through the ground base station within a preset time period, wherein the first service data is service data of which the request frequency of the first terminal is more than or equal to a preset frequency within the preset time period;
the ground base station sends the first service data of each first terminal to a ground area data center, so that the ground area data center pushes the first service data of the first terminal to a second terminal corresponding to each first terminal, and determines second service data according to the received feedback information of each second terminal; the user of the second terminal has a social relationship with the user of the first terminal; the feedback information is used for feeding back the first service data acquired by the second terminal;
and the ground base station receives and caches second service data sent by the ground area data center, wherein the second service data is service data of which the feedback frequency is greater than or equal to a preset feedback frequency in each first service data.
2. The method of claim 1, wherein before the ground base station sends the first service data of each of the first terminals to a ground area data center, the method further comprises:
the ground base station determines second terminals corresponding to the first terminals according to communication conditions of the first terminals within the coverage range of the ground base station in a preset time period, and establishes a terminal social relation table, wherein the terminal social relation table comprises the first terminals and the second terminals corresponding to the first terminals;
and the ground base station sends the terminal social relationship table to a ground area data center so that the ground area data center pushes first service data of the first terminal to a second terminal corresponding to each first terminal according to the terminal social relationship table.
3. The method according to claim 2, wherein the determining, by the ground base station, the second terminal corresponding to each first terminal according to the communication condition of each first terminal in the coverage area of the ground base station in a preset time period includes:
the ground base station acquires a third terminal corresponding to each first terminal, and a user of the third terminal has a social relationship with a user of the first terminal;
the ground base station determines a third terminal with the communication frequency of each first terminal being greater than or equal to the average communication frequency as a second terminal corresponding to each first terminal according to the communication frequencies of each first terminal and the third terminal in a preset time period; and the user of the second terminal has friend relationship and/or community relationship with the user of the first terminal.
4. The method of claim 1, wherein the terrestrial base station receives and buffers the second service data sent by the terrestrial regional data center, and comprises:
and the ground base station receives second service data sent by the ground area data center and caches the second service data to a mobile edge computing MEC server deployed on the ground base station.
5. A data caching method of a heaven and earth integrated network is characterized by comprising the following steps:
the method comprises the steps that a ground area data center receives first service data of each first terminal sent by a ground base station, the first terminals are terminals within the coverage range of the ground base station, and the first service data are service data of which the request frequency of the first terminals in a preset time period is greater than or equal to a preset frequency;
the ground area data center pushes first service data of the first terminal to a second terminal corresponding to each first terminal; the user of the second terminal has a social relationship with the user of the first terminal;
the ground area data center determines second service data according to the received feedback information of each second terminal; the feedback information is used for feeding back the first service data acquired by the second terminal, and the second service data is service data of which the feedback frequency is greater than or equal to a preset feedback frequency in each first service data;
and the ground area data center sends the second service data to the ground base station.
6. The method of claim 5, wherein after the terrestrial region data center determines the second service data according to the received feedback information of each of the second terminals, the method further comprises:
and the ground area data center sends the second service data to an aerial data center so that the aerial data center forwards the second service data to a satellite, and the satellite caches the second service data to an MEC server deployed on the satellite.
7. A ground base station, comprising:
the determining module is used for determining first service data acquired by each first terminal through a ground base station within a preset time period, wherein the first service data is service data of which the request frequency of the first terminal is greater than or equal to a preset frequency within the preset time period;
the sending module is used for sending the first service data of each first terminal to a ground area data center so that the ground area data center pushes the first service data of the first terminal to a second terminal corresponding to each first terminal, and determines second service data according to the received feedback information of each second terminal; the user of the second terminal has a social relationship with the user of the first terminal; the feedback information is used for feeding back the first service data acquired by the second terminal;
and the receiving and caching module is used for receiving and caching the second service data sent by the ground area data center, wherein the second service data is service data of which the feedback frequency is greater than or equal to a preset feedback frequency in each first service data.
8. A ground area data center, comprising:
the system comprises a receiving module, a processing module and a processing module, wherein the receiving module is used for receiving first service data of each first terminal sent by a ground base station, the first terminal is a terminal within the coverage range of the ground base station, and the first service data is service data of which the request frequency of the first terminal is greater than or equal to a preset frequency within a preset time period;
the pushing module is used for pushing the first service data of the first terminal to the second terminal corresponding to each first terminal; the user of the second terminal has a social relationship with the user of the first terminal;
a determining module, configured to determine second service data according to the received feedback information of each second terminal; the feedback information is used for feeding back the first service data acquired by the second terminal, and the second service data is service data of which the feedback frequency is greater than or equal to a preset feedback frequency in each first service data;
and the sending module is used for sending the second service data to the ground base station.
9. A ground 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 terrestrial base stations to perform the method of any one of claims 1-4.
10. A ground area data center, comprising: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executing the memory-stored computer-executable instructions to cause a ground area data center to perform the method of claim 5 or 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810517662.4A CN110535897B (en) | 2018-05-25 | 2018-05-25 | Data caching method and device for heaven-earth integrated network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810517662.4A CN110535897B (en) | 2018-05-25 | 2018-05-25 | Data caching method and device for heaven-earth integrated network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110535897A CN110535897A (en) | 2019-12-03 |
| CN110535897B true CN110535897B (en) | 2020-10-20 |
Family
ID=68657818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810517662.4A Active CN110535897B (en) | 2018-05-25 | 2018-05-25 | Data caching method and device for heaven-earth integrated network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110535897B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111726392B (en) * | 2020-05-15 | 2021-10-12 | 清华大学 | Content pushing method, system and equipment based on satellite movement track |
| CN111835405B (en) * | 2020-06-29 | 2022-04-05 | 重庆邮电大学 | Information pushing method and system based on heaven-earth integrated information center network |
| US20230268988A1 (en) * | 2020-07-09 | 2023-08-24 | Beijing Xiaomi Mobile Software Co., Ltd. | Satellite communication method and apparatus, and core network element and storage medium |
| CN112584439A (en) * | 2020-11-27 | 2021-03-30 | 重庆邮电大学 | Caching method in edge calculation |
| CN112804313B (en) * | 2020-12-31 | 2022-08-09 | 杭州雾联科技有限公司 | Data synchronization method, device, equipment and medium based on cross-domain edge node |
| CN113329467B (en) * | 2021-04-20 | 2022-10-11 | 清华大学 | Satellite data transmission method and system |
| CN113271353B (en) * | 2021-05-13 | 2022-09-06 | 北京邮电大学 | Satellite-oriented data cache terminal selection method and device |
| CN113543262B (en) * | 2021-06-07 | 2023-06-16 | 中国联合网络通信集团有限公司 | Method and device for reducing cloud game network time delay |
| CN116132486B (en) * | 2023-04-13 | 2023-06-20 | 山东慧创信息科技有限公司 | Sky-ground integrated data acquisition system based on high precision of Internet of things |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101427230A (en) * | 2005-02-11 | 2009-05-06 | 通用仪表公司 | Hot content update for a target device |
| CN103118132A (en) * | 2013-02-28 | 2013-05-22 | 浙江大学 | Distributed caching system and method oriented to spatio-temporal data |
| CN107846704A (en) * | 2017-10-26 | 2018-03-27 | 北京邮电大学 | A kind of resource allocation and base station service arrangement method based on mobile edge calculations |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020170060A1 (en) * | 2001-05-08 | 2002-11-14 | Lyman Julie F. | Methods and apparatus for transmitting portal content over multiple transmission regions |
-
2018
- 2018-05-25 CN CN201810517662.4A patent/CN110535897B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101427230A (en) * | 2005-02-11 | 2009-05-06 | 通用仪表公司 | Hot content update for a target device |
| CN103118132A (en) * | 2013-02-28 | 2013-05-22 | 浙江大学 | Distributed caching system and method oriented to spatio-temporal data |
| CN107846704A (en) * | 2017-10-26 | 2018-03-27 | 北京邮电大学 | A kind of resource allocation and base station service arrangement method based on mobile edge calculations |
Non-Patent Citations (1)
| Title |
|---|
| 基于SDN的天地一体化存储网络技术研究;宋佳;《中国优秀硕士学位论文全文数据库 信息科技辑》;20160815;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110535897A (en) | 2019-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110535897B (en) | Data caching method and device for heaven-earth integrated network | |
| CN110535522B (en) | Satellite-ground cooperative transmission method and device | |
| CN100556129C (en) | A kind of equity connects flow medium live system and device | |
| CN110336885B (en) | Edge node distribution method, device, scheduling server and storage medium | |
| CN109522330A (en) | Cloud platform data processing method, device, equipment and medium based on block chain | |
| CN105872002A (en) | Video program obtaining method and system, and device | |
| CN101267589B (en) | System and method for realizing interactive service | |
| EP2938144B1 (en) | Service announcement message transmission method and device | |
| CN102474524B (en) | Targeted advertising method in a peer-to-peer network | |
| CN103974057B (en) | A kind of video quality user experience value assessment method, equipment and system | |
| CN108270860A (en) | The acquisition system and method for environmental quality online monitoring data | |
| KR101004971B1 (en) | Registration in a broadcast communications system | |
| CN104077296A (en) | Information processing method and server | |
| CN108989864B (en) | Wheat connecting method, device, equipment and storage medium | |
| CN109660819A (en) | Service buffer method, apparatus and serving BS based on mobile edge calculations | |
| CN107734592B (en) | core network selection method, access network entity, UE and system | |
| JP2016516379A (en) | Method and apparatus for dynamic content offloading | |
| KR101670910B1 (en) | Efficient cache selection for content delivery networks and user equipments | |
| EP3847831B1 (en) | Cache and multicast techniques to reduce bandwidth utilization | |
| CN111541555A (en) | Group chat optimization method and related product | |
| CN104754618A (en) | Wireless data transmission method and device | |
| CN106131142A (en) | multimedia data storage method and device | |
| CN106303581A (en) | A kind of video file download process method, device and server | |
| CN111836268B (en) | Terminal equipment access information processing method, equipment and storage medium | |
| CN106657116B (en) | Method and device for remotely starting streaming data transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240112 Address after: 3rd Floor, Jialian Times Square, No. 6 Gulou South Street, Changping District, Beijing, 102299 Patentee after: Jialian Artificial Intelligence Technology Development (Beijing) Co.,Ltd. Address before: 100876 Beijing city Haidian District Xitucheng Road No. 10 Patentee before: Beijing University of Posts and Telecommunications |
|
| TR01 | Transfer of patent right |