CN117439655B - Space terahertz information center network lightweight caching method and device - Google Patents
Space terahertz information center network lightweight caching method and device Download PDFInfo
- Publication number
- CN117439655B CN117439655B CN202311597239.7A CN202311597239A CN117439655B CN 117439655 B CN117439655 B CN 117439655B CN 202311597239 A CN202311597239 A CN 202311597239A CN 117439655 B CN117439655 B CN 117439655B
- Authority
- CN
- China
- Prior art keywords
- data
- network
- data packet
- information
- terahertz
- 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 56
- 238000012545 processing Methods 0.000 claims abstract description 90
- 238000004891 communication Methods 0.000 claims abstract description 41
- 238000013145 classification model Methods 0.000 claims abstract description 11
- 239000000872 buffer Substances 0.000 claims description 7
- 238000007781 pre-processing Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 23
- 238000013523 data management Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000004422 calculation algorithm Methods 0.000 description 3
- 238000007635 classification algorithm Methods 0.000 description 3
- 238000004590 computer program Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000007246 mechanism 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
- 238000013468 resource allocation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- H04B7/18521—Systems of inter linked satellites, i.e. inter satellite service
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/90—Non-optical transmission systems, e.g. transmission systems employing non-photonic corpuscular radiation
-
- 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
- H04W28/09—Management thereof
- H04W28/0925—Management thereof using policies
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
- H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
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)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses a method and a device for lightweight caching of a spatial terahertz information center network, wherein the method comprises the following steps: constructing a space terahertz network; in a space terahertz network, N central nodes are determined, wherein N is a positive integer; the central node comprises a cache and node address information; processing the incoming data packets by using a preset data identification classification model on N central nodes to obtain preprocessed data packets; storing the preprocessed data packets in the caches of the N central nodes; and carrying out cooperative processing, sharing processing and forwarding processing on the data packets in the N central node caches to realize the lightweight cache of the space terahertz information center network. The invention effectively utilizes the resources of the central node, reduces the consumption of satellite resources in satellite communication, improves the data transmission efficiency of the terahertz communication network, reduces the transmission delay, performs data caching and data management at the central node, and improves the availability and reliability of important data in the network.
Description
Technical Field
The invention relates to the technical field of satellite communication networks, in particular to a space terahertz information center network lightweight caching method and device.
Background
Terahertz communication is used as a communication technology with potential high capacity and high speed, and has wide application prospect, especially in the field of satellite communication. However, there is a significant mismatch between the large capacity, high rate characteristics of terahertz communication and the existing network packet forwarding methods, which results in a problem of low data transmission efficiency. To solve this problem, a cache design needs to be introduced to improve the data access speed and resource utilization efficiency.
This problem is even more pronounced in spatial information center networks. At the same time, the resources on the satellite are limited and lightweight designs are required to meet the demands of high rate communications. In a spatial information center network, the data transmission rate is very high, but the existing network buffer design cannot meet the rate, so that the data transmission efficiency is low, and the transmission delay is large. The on-board resources are limited, and the traditional caching method occupies more storage and calculation resources, so that resource waste is caused. The high rate of terahertz communication requires data to be quickly accessible, but existing cache designs fail to meet this requirement, resulting in insufficient data availability.
Disclosure of Invention
The invention aims to solve the technical problem of providing a lightweight caching method and device for a space terahertz information center network, wherein one or more center nodes are determined in the space terahertz information center network; at the central node, adopting a data identification and classification algorithm to divide the incoming data packets into different categories or priorities; making a cache policy, and storing data with high priority or frequent access in a cache so as to ensure quick access; and storing the data processed by the classified and cached strategies in a cache of the central node, and periodically updating and maintaining the data in the cache. The invention effectively utilizes the resources of the central node, reduces the consumption of satellite resources in satellite communication, improves the data transmission efficiency of the terahertz communication network, reduces the transmission delay, performs data caching and data management at the central node, and improves the availability and reliability of important data in the network.
In order to solve the technical problems, a first aspect of the embodiment of the invention discloses a lightweight caching method for a spatial terahertz information center network, which comprises the following steps:
s1, constructing a space terahertz network;
s2, in the space terahertz network, N central nodes are determined, and N is a positive integer; the central node comprises a cache and node address information;
s3, processing the incoming data packets by using a preset data identification classification model on the N central nodes to obtain preprocessed data packets;
s4, storing the preprocessed data packets in caches of the N central nodes;
and S5, carrying out cooperative processing, sharing processing and forwarding processing on the data packets in the N central node caches to realize the lightweight caches of the space terahertz information center network.
As an optional implementation manner, in the first aspect of the embodiment of the present invention, the space terahertz network includes M backbone satellites, M is a positive integer, and the M backbone satellites perform interconnection communication through inter-satellite terahertz links;
selecting K satellites with large capacity from the M backbone satellites as software defined network controllers to form a control plane, and other M-K satellites as transponders to form a data plane;
the control plane is used for naming the space terahertz network data packet;
the data plane is used for carrying out data packet processing.
In a first aspect of the embodiment of the present invention, processing, at the N central nodes, an incoming data packet by using a preset data identification classification model to obtain a preprocessed data packet includes:
s31, classifying the incoming data packets on the N central nodes to obtain category information of the data packets;
s32, judging the priority of the data packet to obtain the priority information of the data packet;
s33, processing the data packet according to the category information and the priority information to obtain a preprocessed data packet.
In a first aspect of the embodiment of the present invention, the processing the data packet according to the category information and the priority information to obtain a preprocessed data packet includes:
s331, acquiring the requirement information of the space terahertz network, and processing the data packet according to the requirement information and the category information to obtain a storage mode of the data packet;
s332, storing the data packet according to the storage mode of the data packet;
s333, acquiring load information and resource utilization information of the space terahertz network, and extracting the data packet with high priority stored in S432 according to the load information, the resource utilization information and the priority information to obtain a preprocessed data packet.
In a first aspect of the embodiment of the present invention, the performing cooperative processing, sharing processing, and forwarding processing on the data packets in the N central node caches includes:
s51, when the cache of a certain central node lacks needed data, the central node requests data from other central nodes, so that the cooperative processing of the data packets is realized;
s52, when a shared data request occurs in the space terahertz network, sharing processing of the data packets is realized among the N central nodes by using a preset collaborative caching method;
and S53, when a data forwarding request occurs in the space terahertz network, determining an optimal data forwarding path to realize forwarding processing of the data packet.
In a first aspect of the embodiment of the present invention, when a request for forwarding data occurs in the spatial terahertz network, an optimal data forwarding path is determined, so as to implement forwarding processing of a data packet, where the method includes:
s531, when a data forwarding request appears in the space terahertz network, determining the optimal data forwarding paths of the N central nodes;
s532, forwarding the data packet according to the optimal data forwarding path and the node address information, and implementing forwarding processing of the data packet.
As an optional implementation manner, in the first aspect of the embodiment of the present invention, the determining an optimal data forwarding path of the N central nodes includes:
when a data forwarding request occurs in the space terahertz network, determining the optimal data forwarding paths of the N central nodes according to the topological structure, the node load and the communication delay of the space terahertz network.
As an optional implementation manner, in the first aspect of the embodiment of the present invention, the method further includes:
naming the data packet of the space terahertz network in the control plane by using a layering naming method to obtain data packet name information;
the data packet name information comprises a content generating device ID, a content type, data content, a version number and a content unique identifier;
the content unique identification comprises a content abstract and a semantic identifier of the data;
and addressing nodes in the space terahertz network according to the content unique identifier to obtain node address information.
The second aspect of the embodiment of the invention discloses a space terahertz information center network lightweight caching device, which comprises:
the network construction module is used for constructing a space terahertz network;
the center node determining module is used for determining N center nodes in the space terahertz network, wherein N is a positive integer; the central node comprises a cache and node address information;
the data packet preprocessing module is used for processing the incoming data packets by utilizing a preset data identification classification model on the N central nodes to obtain preprocessed data packets;
the data packet buffer module is used for storing the preprocessed data packets in the buffers of the N central nodes;
and the lightweight caching module is used for carrying out cooperative processing, sharing processing and forwarding processing on the data packets in the N central node caches to realize the spatial terahertz information center network lightweight caching.
In a second aspect of the embodiment of the present invention, the space terahertz network includes M backbone satellites, M is a positive integer, and the M backbone satellites are interconnected and communicated through inter-satellite terahertz links;
selecting K satellites with large capacity from the M backbone satellites as software defined network controllers to form a control plane, and other M-K satellites as transponders to form a data plane;
the control plane is used for naming the space terahertz network data packet;
the data plane is used for carrying out data packet processing.
In a second aspect of the embodiment of the present invention, processing, at the N central nodes, an incoming data packet by using a preset data identification classification model to obtain a preprocessed data packet includes:
s31, classifying the incoming data packets on the N central nodes to obtain category information of the data packets;
s32, judging the priority of the data packet to obtain the priority information of the data packet;
s33, processing the data packet according to the category information and the priority information to obtain a preprocessed data packet.
In a second aspect of the embodiment of the present invention, the processing the data packet according to the category information and the priority information to obtain a preprocessed data packet includes:
s331, acquiring the requirement information of the space terahertz network, and processing the data packet according to the requirement information and the category information to obtain a storage mode of the data packet;
s332, storing the data packet according to the storage mode of the data packet;
s333, acquiring load information and resource utilization information of the space terahertz network, and extracting the data packet with high priority stored in S432 according to the load information, the resource utilization information and the priority information to obtain a preprocessed data packet.
In a second aspect of the embodiment of the present invention, the performing cooperative processing, sharing processing, and forwarding processing on the data packets in the N central node caches includes:
s51, when the cache of a certain central node lacks needed data, the central node requests data from other central nodes, so that the cooperative processing of the data packets is realized;
s52, when a shared data request occurs in the space terahertz network, sharing processing of the data packets is realized among the N central nodes by using a preset collaborative caching method;
and S53, when a data forwarding request occurs in the space terahertz network, determining an optimal data forwarding path to realize forwarding processing of the data packet.
In a second aspect of the embodiment of the present invention, when a forwarding data request occurs in the spatial terahertz network, an optimal data forwarding path is determined, so as to implement forwarding processing of a data packet, where the method includes:
s531, when a data forwarding request appears in the space terahertz network, determining the optimal data forwarding paths of the N central nodes;
s532, forwarding the data packet according to the optimal data forwarding path and the node address information, and implementing forwarding processing of the data packet.
As an optional implementation manner, in a second aspect of the embodiment of the present invention, the determining an optimal data forwarding path of the N central nodes includes:
when a data forwarding request occurs in the space terahertz network, determining the optimal data forwarding paths of the N central nodes according to the topological structure, the node load and the communication delay of the space terahertz network.
As an optional implementation manner, in the second aspect of the embodiment of the present invention, the method further includes:
naming the data packet of the space terahertz network in the control plane by using a layering naming method to obtain data packet name information;
the data packet name information comprises a content generating device ID, a content type, data content, a version number and a content unique identifier;
the content unique identification comprises a content abstract and a semantic identifier of the data;
and addressing nodes in the space terahertz network according to the content unique identifier to obtain node address information.
The third aspect of the invention discloses another lightweight caching device for a spatial terahertz information center network, which comprises:
a memory storing executable program code;
a processor coupled to the memory;
the processor calls the executable program codes stored in the memory to execute part or all of the steps in the lightweight caching method for the spatial terahertz information center network disclosed by the first aspect of the embodiment of the invention.
The fourth aspect of the present invention discloses a computer-readable medium, where the computer-readable medium stores computer instructions for executing some or all of the steps in the spatial terahertz information center network lightweight caching method disclosed in the first aspect of the present invention when the computer instructions are called.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
(1) The invention effectively utilizes the resources of the central node, reduces the consumption of satellite resources in satellite communication, improves the data transmission efficiency of the terahertz communication network, and reduces the transmission delay.
(2) The invention performs data caching and data management at the central node, and improves the availability and reliability of important data in the network.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow diagram of a lightweight caching method for a spatial terahertz information center network, which is disclosed in an embodiment of the invention;
fig. 2 is a schematic flow chart of another method for lightweight caching of a spatial terahertz information center network according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a lightweight caching device for a spatial terahertz information center network, which is disclosed in the embodiment of the invention;
fig. 4 is a schematic structural diagram of another spatial terahertz information center network lightweight caching apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the present invention better understood by those skilled in the art, the following description will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terms first, second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, apparatus, article, or device that comprises a list of steps or elements is not limited to the list of steps or elements but may, in the alternative, include other steps or elements not expressly listed or inherent to such process, method, article, or device.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The invention discloses a method and a device for lightweight caching of a spatial terahertz information center network, wherein the method comprises the following steps: constructing a space terahertz network; in a space terahertz network, N central nodes are determined, wherein N is a positive integer; the central node comprises a cache and node address information; processing the incoming data packets by using a preset data identification classification model on N central nodes to obtain preprocessed data packets; storing the preprocessed data packets in the caches of the N central nodes; and carrying out cooperative processing, sharing processing and forwarding processing on the data packets in the N central node caches to realize the lightweight cache of the space terahertz information center network. The invention effectively utilizes the resources of the central node, reduces the consumption of satellite resources in satellite communication, improves the data transmission efficiency of the terahertz communication network, reduces the transmission delay, performs data caching and data management at the central node, and improves the availability and reliability of important data in the network. The following will describe in detail.
Example 1
Referring to fig. 1, fig. 1 is a schematic flow chart of a spatial terahertz information center network lightweight caching method disclosed in an embodiment of the invention. The space terahertz information center network lightweight caching method described in fig. 1 is applied to the technical field of satellite communication networks, resources of a center node are effectively utilized, on-board resource consumption in satellite communication is reduced, data transmission efficiency of the terahertz communication network is improved, and the embodiment of the invention is not limited. As shown in fig. 1, the spatial terahertz information center network lightweight caching method may include the following operations:
s1, constructing a space terahertz network;
s2, in the space terahertz network, N central nodes are determined, and N is a positive integer; the central node comprises a cache and node address information;
selecting N satellites with large capacity as central nodes;
s3, processing the incoming data packets by using a preset data identification classification model on the N central nodes to obtain preprocessed data packets;
s4, storing the preprocessed data packets in caches of the N central nodes;
and S5, carrying out cooperative processing, sharing processing and forwarding processing on the data packets in the N central node caches to realize the lightweight caches of the space terahertz information center network.
Optionally, the space terahertz network comprises M backbone satellites, M is a positive integer, and the M backbone satellites are interconnected and communicated through inter-satellite terahertz links;
selecting K satellites with large capacity from the M backbone satellites as software defined network controllers to form a control plane, and other M-K satellites as transponders to form a data plane;
the control plane is used for naming the space terahertz network data packet;
the data plane is used for carrying out data packet processing.
Optionally, processing, on the N central nodes, the incoming data packet by using a preset data identification classification model to obtain a preprocessed data packet, including:
s31, classifying the incoming data packets on the N central nodes to obtain category information of the data packets;
the classification mode is to divide the data packets with the same prefix into one class;
s32, judging the priority of the data packet to obtain the priority information of the data packet;
the priority judging method is that the more the number of requests is, the higher the priority is;
s33, processing the data packet according to the category information and the priority information to obtain a preprocessed data packet.
Optionally, the processing the data packet according to the category information and the priority information to obtain a preprocessed data packet includes:
s331, acquiring the requirement information of the space terahertz network, and processing the data packet according to the requirement information and the category information to obtain a storage mode of the data packet;
the storage mode is to divide a storage hierarchy based on the frequency of use and importance of data, and store the data on different media. The data is divided into different layers according to the access frequency and importance of the data. Such a hierarchy allows selection of the appropriate storage medium according to the different characteristics of the data while ensuring that high frequency and critical data can be accessed in a faster way, while low frequency and non-critical data can be stored for long periods in a more economical way.
S332, storing the data packet according to the storage mode of the data packet;
s333, acquiring load information and resource utilization information of the space terahertz network, and extracting the data packet with high priority stored in S432 according to the load information, the resource utilization information and the priority information to obtain a preprocessed data packet.
Load information refers to traffic on the network and the load conditions of the data packets, including the number, size, transmission rate, etc. of the data packets. Knowing the load information helps the network administrator monitor the health of the network, detect potential congestion problems, and optimize network performance.
The resource utilization information covers network devices and resource usage, such as processor utilization, memory usage, bandwidth utilization, etc. This information is important for assessing the performance of the network device, predicting possible bottlenecks, and for resource allocation and adjustment.
The data packets with high priority can be set and compared according to actual scenes, a priority threshold is set, and the data packets with high priority are determined to be selected.
Optionally, the performing cooperative processing, sharing processing and forwarding processing on the data packets in the N central node caches includes:
s51, when the cache of a certain central node lacks needed data, the central node requests data from other central nodes, so that the cooperative processing of the data packets is realized;
s52, when a shared data request occurs in the space terahertz network, sharing processing of the data packets is realized among the N central nodes by using a preset collaborative caching method;
the sharing process refers to that when a plurality of central nodes in the space terahertz network receive the same or similar data requests, the data requests are jointly processed through a collaborative caching method so as to improve network efficiency and resource utilization.
If the central node that initiated the data request cannot find the data in the local cache, it will issue the data request to the other central nodes. Other central nodes will check their local caches and if there is corresponding data, they can provide the data to the requesting node in a coordinated manner without having to retrieve it from the data source again.
And S53, when a data forwarding request occurs in the space terahertz network, determining an optimal data forwarding path to realize forwarding processing of the data packet.
Optionally, when a data forwarding request occurs in the spatial terahertz network, determining an optimal data forwarding path to implement forwarding processing of a data packet, including:
s531, when a data forwarding request appears in the space terahertz network, determining the optimal data forwarding paths of the N central nodes;
s532, forwarding the data packet according to the optimal data forwarding path and the node address information, and implementing forwarding processing of the data packet.
Optionally, the determining the optimal data forwarding paths of the N central nodes includes:
when a data forwarding request occurs in the space terahertz network, determining the optimal data forwarding paths of the N central nodes according to the topological structure, the node load and the communication delay of the space terahertz network.
Optionally, the method is realized by a path selection algorithm, and the algorithm comprehensively considers the topological structure, the node load and the communication delay to calculate the forwarding path. The path selection algorithm is the prior art and is not a research content of the invention, which is not limited.
Optionally, the method further comprises:
naming the data packet of the space terahertz network in the control plane by using a layering naming method to obtain data packet name information;
the data packet name information comprises a content generating device ID, a content type, data content, a version number and a content unique identifier;
the content unique identification comprises a content abstract and a semantic identifier of the data;
and addressing nodes in the space terahertz network according to the content unique identifier to obtain node address information.
Therefore, the invention effectively utilizes the resources of the central node, reduces the consumption of satellite resources in satellite communication, improves the data transmission efficiency of the terahertz communication network, and reduces the transmission delay. The invention performs data caching and data management at the central node, and improves the availability and reliability of important data in the network.
Example two
Referring to fig. 2, fig. 2 is a flow chart of another method for lightweight caching of a spatial terahertz information center network according to an embodiment of the present invention. The space terahertz information center network lightweight caching method described in fig. 2 is applied to the technical field of satellite communication networks, resources of a center node are effectively utilized, on-board resource consumption in satellite communication is reduced, data transmission efficiency of the terahertz communication network is improved, and the embodiment of the invention is not limited.
Fig. 2 includes the following operations:
(1) Determining one or more center nodes in a space terahertz information center network; (2) The incoming data packets are divided into different categories or priorities by adopting a data identification and classification algorithm; (3) Storing high priority or frequently accessed data in a cache to ensure quick access thereof; (4) When the requested data packet is the same as the requested data packet, i.e. a cache hit, the data packet is forwarded quickly by the cache node.
As shown in fig. 2, the spatial terahertz information center network lightweight caching method may include the following operations:
step 1, a space terahertz information center network is composed of a plurality of backbone satellites, and interconnection communication is carried out through inter-satellite terahertz links;
step 2, the space terahertz information center network adopts an information center network naming addressing method, adopts a layering naming method, names data based on content, and addresses by using unique identification of the data content;
step 3, the satellite communication network is divided into three planes, namely a management plane, a control plane and a data plane;
step 4, selecting a large-capacity satellite in a satellite communication network as an SDN controller to form a control plane, and selecting other satellites as transponders to form a data plane;
step 5, determining one or more center nodes in the space terahertz information center network, wherein the center nodes have a cache function and can be used for storing and quickly accessing important data;
step 6, at the central node, adopting a data identification and classification algorithm to divide the incoming data packets into different categories or priorities, and determining a storage mode according to network requirements and data characteristics;
step 7, according to network load and resource utilization conditions, a caching strategy is formulated, and data with high priority or frequently accessed data are stored in a cache so as to ensure quick access;
step 8, storing the data processed by the classification and caching strategies in a cache of the central node, and updating and maintaining the data in the cache periodically;
and 9, determining an optimal data forwarding path through intelligent routing among the central nodes when data in the network is requested, and formulating a forwarding strategy in consideration of a network topology structure, node loads and communication delay factors so as to maximize data transmission efficiency and reduce delay.
Step 10, when the cache of a certain central node lacks the required data, the data can be requested to other central nodes, and the repeated transmission of the data in the network is avoided through collaborative caching, so that the data access efficiency is improved;
and 11, when data in the network is requested, the central nodes can respond quickly, the central nodes work cooperatively, and the shared cache or the forwarded data is determined through a cooperative cache and forwarding mechanism.
Therefore, the invention effectively utilizes the resources of the central node, reduces the consumption of satellite resources in satellite communication, improves the data transmission efficiency of the terahertz communication network, and reduces the transmission delay. The invention performs data caching and data management at the central node, and improves the availability and reliability of important data in the network.
Example III
Referring to fig. 3, fig. 3 is a schematic structural diagram of a spatial terahertz information center network lightweight caching device according to an embodiment of the invention. The space terahertz information center network lightweight caching device described in fig. 3 is applied to the technical field of satellite communication networks, resources of a center node are effectively utilized, on-board resource consumption in satellite communication is reduced, data transmission efficiency of the terahertz communication network is improved, and the embodiment of the invention is not limited. As shown in fig. 3, the spatial terahertz information center network lightweight caching apparatus may include the following operations:
s301, a network construction module is used for constructing a space terahertz network;
s302, a central node determining module, which is used for determining N central nodes in the space terahertz network, wherein N is a positive integer; the central node comprises a cache and node address information;
s303, a data packet preprocessing module, which is used for processing the incoming data packets on the N central nodes by utilizing a preset data identification classification model to obtain preprocessed data packets;
s304, a data packet buffer module, which is used for storing the preprocessed data packets in the buffers of the N central nodes;
s305, a lightweight cache module, which is used for carrying out cooperative processing, sharing processing and forwarding processing on the data packets in the N central node caches, so as to realize the lightweight cache of the space terahertz information center network.
Example IV
Referring to fig. 4, fig. 4 is a schematic structural diagram of another spatial terahertz information center network lightweight caching apparatus according to an embodiment of the present invention. The space terahertz information center network lightweight caching device described in fig. 4 is applied to the technical field of satellite communication networks, resources of a center node are effectively utilized, on-board resource consumption in satellite communication is reduced, data transmission efficiency of the terahertz communication network is improved, and the embodiment of the invention is not limited. As shown in fig. 4, the spatial terahertz information center network lightweight caching apparatus may include the following operations:
a memory 401 storing executable program codes;
a processor 402 coupled with the memory 401;
the processor 402 invokes executable program codes stored in the memory 401 for performing the steps in the spatial terahertz information center network lightweight caching method described in the first and second embodiments.
Example five
The embodiment of the invention discloses a computer readable storage medium which stores a computer program for electronic data exchange, wherein the computer program enables a computer to be used for executing the steps in the spatial terahertz information center network lightweight caching method described in the first and second embodiments.
The apparatus embodiments described above are merely illustrative, in which the modules illustrated as separate components may or may not be physically separate, and the components shown as modules may or may not be physical, i.e., may be located in one place, or may be distributed over multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above detailed description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course by means of hardware. Based on such understanding, the foregoing technical solutions may be embodied essentially or in part in the form of a software product that may be stored in a computer-readable storage medium including Read-Only Memory (ROM), random-access Memory (Random Access Memory, RAM), programmable Read-Only Memory (Programmable Read-Only Memory, PROM), erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), one-time programmable Read-Only Memory (OTPROM), electrically erasable programmable Read-Only Memory (EEPROM), compact disc Read-Only Memory (Compact Disc Read-Only Memory, CD-ROM) or other optical disc Memory, magnetic disc Memory, tape Memory, or any other medium that can be used for computer-readable carrying or storing data.
Finally, it should be noted that: the embodiment of the invention discloses a space terahertz information center network lightweight caching method and device, which are disclosed by the embodiment of the invention and are only used for illustrating the technical scheme of the invention, but not limiting the technical scheme; although the invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that; the technical scheme recorded in the various embodiments can be modified or part of technical features in the technical scheme can be replaced equivalently; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (6)
1. The utility model provides a space terahertz information center network lightweight caching method which is characterized in that the method comprises the following steps:
s1, constructing a space terahertz network;
the space terahertz network comprises M backbone satellites, M is a positive integer, and the M backbone satellites are interconnected and communicated through inter-satellite terahertz links;
selecting K satellites with large capacity from the M backbone satellites as software defined network controllers to form a control plane, and other M-K satellites as transponders to form a data plane;
the control plane is used for naming the space terahertz network data packet;
the data plane is used for carrying out data packet processing;
s2, in the space terahertz network, N central nodes are determined, and N is a positive integer; the central node comprises a cache and node address information;
s3, processing the incoming data packets by using a preset data identification classification model on the N central nodes to obtain preprocessed data packets, wherein the method comprises the following steps:
s31, classifying the incoming data packets on the N central nodes to obtain category information of the data packets;
s32, judging the priority of the data packet to obtain the priority information of the data packet;
s33, processing the data packet according to the category information and the priority information to obtain a preprocessed data packet, wherein the preprocessing data packet comprises the following steps:
s331, acquiring the requirement information of the space terahertz network, and processing the data packet according to the requirement information and the category information to obtain a storage mode of the data packet;
s332, storing the data packet according to the storage mode of the data packet;
s333, acquiring load information and resource utilization information of the space terahertz network, and extracting the data packet with high priority stored in S432 according to the load information, the resource utilization information and the priority information to obtain a preprocessed data packet;
s4, storing the preprocessed data packets in caches of the N central nodes;
s5, carrying out cooperative processing, sharing processing and forwarding processing on the data packets in the N central node caches to realize the lightweight caches of the space terahertz information center network;
the performing cooperative processing, sharing processing and forwarding processing on the data packets in the N central node caches includes:
s51, when the cache of a certain central node lacks needed data, the central node requests data from other central nodes, so that the cooperative processing of the data packets is realized;
s52, when a shared data request occurs in the space terahertz network, sharing processing of the data packets is realized among the N central nodes by using a preset collaborative caching method;
s53, when a data forwarding request appears in the space terahertz network, determining an optimal data forwarding path to realize forwarding processing of a data packet, including:
s531, when a data forwarding request appears in the space terahertz network, determining the optimal data forwarding paths of the N central nodes;
s532, forwarding the data packet according to the optimal data forwarding path and the node address information, and implementing forwarding processing of the data packet.
2. The method for lightweight caching of a spatial terahertz information center network according to claim 1, wherein the determining the optimal data forwarding paths of the N center nodes includes:
when a data forwarding request occurs in the space terahertz network, determining the optimal data forwarding paths of the N central nodes according to the topological structure, the node load and the communication delay of the space terahertz network.
3. The spatial terahertz information center network lightweight caching method according to claim 1, further comprising:
naming the data packet of the space terahertz network in the control plane by using a layering naming method to obtain data packet name information;
the data packet name information comprises a content generating device ID, a content type, data content, a version number and a content unique identifier;
the content unique identification comprises a content abstract and a semantic identifier of the data;
and addressing nodes in the space terahertz network according to the content unique identifier to obtain node address information.
4. A spatial terahertz information center network lightweight caching apparatus, the apparatus comprising:
the network construction module is used for constructing a space terahertz network;
the space terahertz network comprises M backbone satellites, M is a positive integer, and the M backbone satellites are interconnected and communicated through inter-satellite terahertz links;
selecting K satellites with large capacity from the M backbone satellites as software defined network controllers to form a control plane, and other M-K satellites as transponders to form a data plane;
the control plane is used for naming the space terahertz network data packet;
the data plane is used for carrying out data packet processing;
the center node determining module is used for determining N center nodes in the space terahertz network, wherein N is a positive integer; the central node comprises a cache and node address information;
the data packet preprocessing module is configured to process, on the N central nodes, an incoming data packet by using a preset data identification classification model, to obtain a preprocessed data packet, and includes:
s31, classifying the incoming data packets on the N central nodes to obtain category information of the data packets;
s32, judging the priority of the data packet to obtain the priority information of the data packet;
s33, processing the data packet according to the category information and the priority information to obtain a preprocessed data packet, wherein the preprocessing data packet comprises the following steps:
s331, acquiring the requirement information of the space terahertz network, and processing the data packet according to the requirement information and the category information to obtain a storage mode of the data packet;
s332, storing the data packet according to the storage mode of the data packet;
s333, acquiring load information and resource utilization information of the space terahertz network, and extracting the data packet with high priority stored in S432 according to the load information, the resource utilization information and the priority information to obtain a preprocessed data packet;
the data packet buffer module is used for storing the preprocessed data packets in the buffers of the N central nodes;
the lightweight cache module is used for carrying out cooperative processing, sharing processing and forwarding processing on the data packets in the N central node caches to realize the spatial terahertz information center network lightweight cache;
the performing cooperative processing, sharing processing and forwarding processing on the data packets in the N central node caches includes:
s51, when the cache of a certain central node lacks needed data, the central node requests data from other central nodes, so that the cooperative processing of the data packets is realized;
s52, when a shared data request occurs in the space terahertz network, sharing processing of the data packets is realized among the N central nodes by using a preset collaborative caching method;
s53, when a data forwarding request appears in the space terahertz network, determining an optimal data forwarding path to realize forwarding processing of a data packet, including:
s531, when a data forwarding request appears in the space terahertz network, determining the optimal data forwarding paths of the N central nodes;
s532, forwarding the data packet according to the optimal data forwarding path and the node address information, and implementing forwarding processing of the data packet.
5. A spatial terahertz information center network lightweight caching apparatus, the apparatus comprising:
a memory storing executable program code;
a processor coupled to the memory;
the processor invokes the executable program code stored in the memory to perform the spatial terahertz information center network lightweight caching method of any one of claims 1-3.
6. A computer-storable medium storing computer instructions that, when invoked, perform the spatial terahertz information center network lightweight caching method according to any one of claims 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311597239.7A CN117439655B (en) | 2023-11-27 | 2023-11-27 | Space terahertz information center network lightweight caching method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311597239.7A CN117439655B (en) | 2023-11-27 | 2023-11-27 | Space terahertz information center network lightweight caching method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117439655A CN117439655A (en) | 2024-01-23 |
| CN117439655B true CN117439655B (en) | 2024-03-29 |
Family
ID=89548103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311597239.7A Active CN117439655B (en) | 2023-11-27 | 2023-11-27 | Space terahertz information center network lightweight caching method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117439655B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118264640B (en) * | 2024-03-29 | 2024-12-17 | 中国人民解放军军事科学院系统工程研究院 | Spatial information center network naming addressing method and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303396A (en) * | 2017-12-29 | 2018-07-20 | 深圳市太赫兹科技创新研究院 | Terahertz time-domain pulse signal acquisition methods, devices and systems |
| JP2018117205A (en) * | 2017-01-17 | 2018-07-26 | 京セラドキュメントソリューションズ株式会社 | Ad hoc network path construction system, node, center node and ad hoc network path construction method |
| WO2022263883A1 (en) * | 2021-06-15 | 2022-12-22 | Telefonaktiebolaget Lm Ericsson (Publ) | Spatial audio assisted beamforming for communications in safe mode |
| CN116567718A (en) * | 2023-04-14 | 2023-08-08 | 重庆邮电大学 | Directional access control method for terahertz wireless network with high efficiency and high bandwidth utilization |
| CN116614843A (en) * | 2023-05-29 | 2023-08-18 | 北京鹏鹄物宇科技发展有限公司 | Edge computing data caching architecture and caching method for satellite communication |
-
2023
- 2023-11-27 CN CN202311597239.7A patent/CN117439655B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018117205A (en) * | 2017-01-17 | 2018-07-26 | 京セラドキュメントソリューションズ株式会社 | Ad hoc network path construction system, node, center node and ad hoc network path construction method |
| CN108303396A (en) * | 2017-12-29 | 2018-07-20 | 深圳市太赫兹科技创新研究院 | Terahertz time-domain pulse signal acquisition methods, devices and systems |
| WO2022263883A1 (en) * | 2021-06-15 | 2022-12-22 | Telefonaktiebolaget Lm Ericsson (Publ) | Spatial audio assisted beamforming for communications in safe mode |
| CN116567718A (en) * | 2023-04-14 | 2023-08-08 | 重庆邮电大学 | Directional access control method for terahertz wireless network with high efficiency and high bandwidth utilization |
| CN116614843A (en) * | 2023-05-29 | 2023-08-18 | 北京鹏鹄物宇科技发展有限公司 | Edge computing data caching architecture and caching method for satellite communication |
Non-Patent Citations (1)
| Title |
|---|
| 信息中心网络中的内置缓存技术研究;徐一帆;;环球人文地理;20141228(第24期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117439655A (en) | 2024-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2975820B1 (en) | Reputation-based strategy for forwarding and responding to interests over a content centric network | |
| US8937942B1 (en) | Storing session information in network devices | |
| US10097378B2 (en) | Efficient TCAM resource sharing | |
| CN106201356B (en) | A Dynamic Data Scheduling Method Based on Link Available Bandwidth Status | |
| CN107404530B (en) | Method and device for social network collaborative caching based on user interest similarity | |
| CN110768837A (en) | A network slice virtual resource allocation method, system and device | |
| CN101662483A (en) | Cache system for cloud computing system and method thereof | |
| CN108366089B (en) | A CCN caching method based on content popularity and node importance | |
| CN104836747A (en) | Network outbound load balancing method and system | |
| US11502956B2 (en) | Method for content caching in information-centric network virtualization | |
| CN117439655B (en) | Space terahertz information center network lightweight caching method and device | |
| Choi et al. | Scalable service placement in the fog computing environment for the IoT-based smart city | |
| CN117640510B (en) | Efficient forwarding method and device for space terahertz network packet | |
| CN104572498B (en) | The buffer memory management method and device of message | |
| US11606415B2 (en) | Method, apparatus and system for processing an access request in a content delivery system | |
| CN113328953B (en) | Method, device and storage medium for network congestion adjustment | |
| CN105553882A (en) | Method for scheduling SDN data plane resources | |
| Nguyen et al. | Adaptive caching for beneficial content distribution in information-centric networking | |
| CN114996023B (en) | Target cache device, processing device, network equipment and table item acquisition method | |
| CN117997964A (en) | NDN-based blockchain data caching method and related device | |
| WANG et al. | Modeling in-network caching and bandwidth sharing performance in information-centric networking | |
| Yuan et al. | An optimal fair resource allocation strategy for a lightweight content-centric networking architecture | |
| Liu et al. | ECC: Edge Collaborative Caching Strategy for Differentiated Services Load-Balancing. | |
| CN109445934B (en) | Query request distribution method and system | |
| CN114296828B (en) | Data computing task unloading method and device, storage medium and equipment |
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 |