CN117640510B - Efficient forwarding method and device for space terahertz network packet - Google Patents
Efficient forwarding method and device for space terahertz network packet Download PDFInfo
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Abstract
The invention discloses a space terahertz network packet efficient forwarding method and a device, wherein the method comprises the following steps: constructing a space terahertz network; classifying data packets entering a space terahertz network to obtain K data packet groups, wherein K is a positive integer; processing each data packet group to obtain a dynamic local routing table of each data packet group to form a dynamic local routing table set; when a node of the space terahertz network receives a data packet to be forwarded, searching in a dynamic local routing table set according to the name prefix of the data packet to be forwarded to obtain a dynamic local routing table of the data packet to be forwarded; and the nodes of the space terahertz network send the data packet to be forwarded to the next-hop node according to the dynamic local routing table of the data packet to be forwarded, so that the space terahertz network packet is forwarded efficiently. The invention reduces unnecessary data packet forwarding by fully utilizing the time-space correlation between the data packets, and improves the performance and throughput of the network.
Description
Technical Field
The invention relates to the technical field of satellite communication networks, in particular to a space terahertz network packet efficient forwarding method and device.
Background
Currently, with the rise of information center network architecture, the characteristics of network traffic change significantly. Conventional TCP/IP networks are packet-based, with packets being independent of each other, each packet having a unique destination address. In the terahertz frequency band, because of the high-capacity and high-speed communication characteristics, the existing network packet forwarding method is not matched with the terahertz communication requirement. In addition, under the architecture of the information center network, the network aims at acquiring the content, and the data packet has the characteristic of space-time locality. This means that the individual packets are all named with the same name prefix, with a spatio-temporal correlation between them, which presents new challenges for efficient forwarding of network packets.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a space terahertz network packet efficient forwarding method and device, wherein data packets entering a network are classified according to name prefixes thereof; generating a corresponding dynamic local routing table aiming at each data packet group, wherein the dynamic local routing table comprises the name prefix of the data packet group and corresponding routing information, including node or link information of the next hop; searching a corresponding dynamic local routing table according to the name prefix of the data packet, and if a matched dynamic local routing table is found, performing forwarding decision by the node according to the information in the dynamic local routing table; dynamic local routing tables and buffers are dynamically updated to accommodate changes in network traffic. The invention reduces unnecessary data packet forwarding by fully utilizing the space-time correlation between the data packets, improves the performance and throughput of the network, adapts to the high-capacity and high-speed communication characteristics of the terahertz frequency band, and ensures that the network can effectively process high-capacity data traffic.
In order to solve the technical problems, a first aspect of the embodiment of the present invention discloses a space terahertz network packet efficient forwarding method, which includes:
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 N satellites with large capacity from the M backbone satellites as software defined network controllers to form a control plane, and selecting other M-N 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, classifying the data packets entering the space terahertz network to obtain K data packet groups, wherein K is a positive integer;
S3, processing each data packet group to obtain a dynamic local routing table of each data packet group, wherein the dynamic local routing table of each data packet group forms a dynamic local routing table set;
S4, when the node of the space terahertz network receives a data packet to be forwarded, searching in the dynamic local routing table set according to the name prefix of the data packet to be forwarded to obtain a dynamic local routing table of the data packet to be forwarded;
and S5, the node of the space terahertz network sends the data packet to be forwarded to a next-hop node according to the dynamic local routing table of the data packet to be forwarded, so that the space terahertz network packet is forwarded efficiently.
In a first aspect of the embodiment of the present invention, the classifying the data packets entering the spatial terahertz network to obtain K data packet groups, where K is a positive integer includes:
classifying the data packets entering the space terahertz network according to the name prefixes of the data packets, and dividing the data packets with the same name prefixes into groups to obtain K data packet groups, wherein K is a positive integer.
In a first aspect of the embodiment of the present invention, the processing each packet group to obtain a dynamic local routing table of each packet group includes:
s31, processing each data packet group to obtain the name prefix of each data packet group;
S32, processing each data packet group to obtain the routing information of each data packet group;
S33, processing each data packet group to obtain next hop node information and link information of each data packet group;
S34, the name prefix of each data packet group, the routing information of each data packet group, the next hop node information of each data packet group and the link information form a dynamic local routing table of each data packet group.
As an optional implementation manner, in the first aspect of the embodiment of the present invention, according to the dynamic local routing table of the data packet to be forwarded, the node of the spatial terahertz network sends the data packet to be forwarded to a next-hop node, so as to implement efficient forwarding of the spatial terahertz network packet, where the method includes:
s51, analyzing the dynamic local routing table of the data packet to be forwarded by the node of the space terahertz network to obtain data information of the dynamic local routing table;
S52, the nodes of the space terahertz network analyze the data information of the dynamic local routing table to obtain forwarding decision information;
And S53, according to the forwarding decision information, the data packet to be forwarded is sent to a next hop node, and efficient forwarding of the space terahertz network packet is realized.
The second aspect of the embodiment of the invention discloses a space terahertz network packet efficient forwarding device, which comprises:
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 N satellites with large capacity from the M backbone satellites as software defined network controllers to form a control plane, and selecting other M-N 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 data packet classification module is used for classifying the data packets entering the space terahertz network to obtain K data packet groups, wherein K is a positive integer;
The dynamic local routing table construction module is used for processing each data packet group to obtain a dynamic local routing table of each data packet group, wherein the dynamic local routing table of each data packet group forms a dynamic local routing table set;
the dynamic local routing table query module is used for searching in the dynamic local routing table set according to the name prefix of the data packet to be forwarded when the node of the space terahertz network receives the data packet to be forwarded, so as to obtain a dynamic local routing table of the data packet to be forwarded;
And the data packet forwarding module is used for the nodes of the space terahertz network to send the data packet to be forwarded to the next hop node according to the dynamic local routing table of the data packet to be forwarded, so that the space terahertz network packet is efficiently forwarded.
In a second aspect of the embodiment of the present invention, the classifying the data packets entering the spatial terahertz network to obtain K data packet groups, where K is a positive integer includes:
classifying the data packets entering the space terahertz network according to the name prefixes of the data packets, and dividing the data packets with the same name prefixes into groups to obtain K data packet groups, wherein K is a positive integer.
In a second aspect of the embodiment of the present invention, the processing each packet group to obtain a dynamic local routing table of each packet group includes:
s31, processing each data packet group to obtain the name prefix of each data packet group;
S32, processing each data packet group to obtain the routing information of each data packet group;
S33, processing each data packet group to obtain next hop node information and link information of each data packet group;
S34, the name prefix of each data packet group, the routing information of each data packet group, the next hop node information of each data packet group and the link information form a dynamic local routing table of each data packet group.
As an optional implementation manner, in a second aspect of the embodiment of the present invention, according to the dynamic local routing table of the data packet to be forwarded, the node of the spatial terahertz network sends the data packet to be forwarded to a next-hop node, so as to implement efficient forwarding of the spatial terahertz network packet, where the method includes:
s51, analyzing the dynamic local routing table of the data packet to be forwarded by the node of the space terahertz network to obtain data information of the dynamic local routing table;
S52, the nodes of the space terahertz network analyze the data information of the dynamic local routing table to obtain forwarding decision information;
And S53, according to the forwarding decision information, the data packet to be forwarded is sent to a next hop node, and efficient forwarding of the space terahertz network packet is realized.
As an optional implementation manner, in a second aspect of the embodiment of the present invention, after the node of the spatial terahertz network sends the data packet to be forwarded to a next-hop node according to the dynamic local routing table of the data packet to be forwarded, the method further includes:
The nodes of the space terahertz network adopt a cache mode, and the common data packet group is stored in a local cache, so that the request to a remote node is reduced, and the network delay and the resource consumption are reduced.
As an optional implementation manner, in a second aspect of the embodiment of the present invention, after the node of the spatial terahertz network sends the data packet to be forwarded to a next-hop node according to the dynamic local routing table of the data packet to be forwarded, the method further includes:
when the space-time local characteristics of network traffic change, the data packet group of specific content appears or disappears at certain space-time points in the space terahertz network;
According to the newly appeared or disappeared data packet, the node of the space terahertz network adjusts the cache content, the dynamic local routing table is updated according to the name prefix of the newly appeared data packet group, and the data packet group which does not appear for a long time is deleted.
The third aspect of the invention discloses another space terahertz network packet efficient forwarding device, which comprises:
A memory storing executable program code;
A processor coupled to the memory;
the processor invokes the executable program codes stored in the memory to execute part or all of the steps in the space terahertz network packet efficient forwarding method disclosed in the first aspect of the embodiment of the invention.
A 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 network packet efficient forwarding 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 reduces unnecessary data packet forwarding by fully utilizing the space-time correlation between the data packets, improves the performance and throughput of the network, adapts to the high-capacity and high-speed communication characteristics of the terahertz frequency band, and ensures that the network can effectively process high-capacity data traffic.
(2) The invention effectively reduces redundant data transmission in the network through the cache management and dynamic updating mechanism, carries out self-adaptive adjustment according to the requirements of different application tasks and the change of network flow, maintains the high-efficiency performance of the network, improves the resource utilization rate and reduces the energy consumption.
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 chart of a space terahertz network packet efficient forwarding method disclosed in an embodiment of the invention;
Fig. 2 is a schematic flow chart of another efficient forwarding method for a space terahertz network packet according to an embodiment of the present invention;
Fig. 3 is a schematic structural diagram of a space terahertz network packet efficient forwarding apparatus disclosed in an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another spatial terahertz network packet efficient forwarding 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 space terahertz network packet efficient forwarding method and a device, wherein the method comprises the following steps: constructing a space terahertz network; classifying data packets entering a space terahertz network to obtain K data packet groups, wherein K is a positive integer; processing each data packet group to obtain a dynamic local routing table of each data packet group to form a dynamic local routing table set; when a node of the space terahertz network receives a data packet to be forwarded, searching in a dynamic local routing table set according to the name prefix of the data packet to be forwarded to obtain a dynamic local routing table of the data packet to be forwarded; and the nodes of the space terahertz network send the data packet to be forwarded to the next-hop node according to the dynamic local routing table of the data packet to be forwarded, so that the space terahertz network packet is forwarded efficiently. The invention reduces unnecessary data packet forwarding by fully utilizing the space-time correlation between the data packets, improves the performance and throughput of the network, adapts to the high-capacity and high-speed communication characteristics of the terahertz frequency band, and ensures that the network can effectively process high-capacity data traffic. The following will describe in detail.
Example 1
Referring to fig. 1, fig. 1 is a flow chart of a space terahertz network packet efficient forwarding method disclosed in an embodiment of the invention. The space terahertz network packet efficient forwarding method described in fig. 1 is applied to the technical field of satellite communication networks, and is used for realizing space terahertz network packet efficient forwarding, and the embodiment of the invention is not limited. As shown in fig. 1, the space terahertz network packet efficient forwarding method may include the following operations:
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 N satellites with large capacity from the M backbone satellites as software defined network controllers to form a control plane, and selecting other M-N satellites as transponders to form a data plane;
SDN is a software defined network;
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, classifying the data packets entering the space terahertz network to obtain K data packet groups, wherein K is a positive integer;
S3, processing each data packet group to obtain a dynamic local routing table of each data packet group, wherein the dynamic local routing table of each data packet group forms a dynamic local routing table set;
S4, when the node of the space terahertz network receives a data packet to be forwarded, searching in the dynamic local routing table set according to the name prefix of the data packet to be forwarded to obtain a dynamic local routing table of the data packet to be forwarded;
and S5, the node of the space terahertz network sends the data packet to be forwarded to a next-hop node according to the dynamic local routing table of the data packet to be forwarded, so that the space terahertz network packet is forwarded efficiently.
Optionally, the classifying the data packets entering the space terahertz network to obtain K data packet groups, where K is a positive integer, includes:
classifying the data packets entering the space terahertz network according to the name prefixes of the data packets, and dividing the data packets with the same name prefixes into groups to obtain K data packet groups, wherein K is a positive integer.
Optionally, the processing each data packet group to obtain a dynamic local routing table of each data packet group includes:
s31, processing each data packet group to obtain the name prefix of each data packet group;
S32, processing each data packet group to obtain the routing information of each data packet group;
S33, processing each data packet group to obtain next hop node information and link information of each data packet group;
S34, the name prefix of each data packet group, the routing information of each data packet group, the next hop node information of each data packet group and the link information form a dynamic local routing table of each data packet group.
Optionally, the node of the space terahertz network sends the data packet to be forwarded to a next-hop node according to the dynamic local routing table of the data packet to be forwarded, so as to realize efficient forwarding of the space terahertz network packet, and the method includes:
s51, analyzing the dynamic local routing table of the data packet to be forwarded by the node of the space terahertz network to obtain data information of the dynamic local routing table;
S52, the nodes of the space terahertz network analyze the data information of the dynamic local routing table to obtain forwarding decision information;
And S53, according to the forwarding decision information, the data packet to be forwarded is sent to a next hop node, and efficient forwarding of the space terahertz network packet is realized.
Optionally, after the node of the space terahertz network sends the data packet to be forwarded to a next-hop node according to the dynamic local routing table of the data packet to be forwarded, the method further includes:
The nodes of the space terahertz network adopt a cache mode, and the common data packet group is stored in a local cache, so that the request to a remote node is reduced, and the network delay and the resource consumption are reduced.
Optionally, after the node of the space terahertz network sends the data packet to be forwarded to a next-hop node according to the dynamic local routing table of the data packet to be forwarded, the method further includes:
when the space-time local characteristics of network traffic change, the data packet group of specific content appears or disappears at certain space-time points in the space terahertz network;
According to the newly appeared or disappeared data packet, the node of the space terahertz network adjusts the cache content, the dynamic local routing table is updated according to the name prefix of the newly appeared data packet group, and the data packet group which does not appear for a long time is deleted.
Optionally, after the node of the space terahertz network sends the data packet to be forwarded to a next-hop node according to the dynamic local routing table of the data packet to be forwarded, 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.
Fig. 2 is a schematic flow chart of another efficient forwarding method for a space terahertz network packet according to an embodiment of the present invention. Fig. 2 is a schematic diagram of a proposed packet forwarding method, comprising:
(1) Classifying data packets entering a network, classifying the data packets with the same prefix into a class, wherein the data packets have space-time correlation;
(2) Generating a local dynamic routing table for different types of data packet groups, and searching the local dynamic routing table after the node receives the data packet, wherein the node has the same prefix, so that the searching times of the routing table can be reduced;
(3) The data packets with more times of node caching are directly forwarded by the caching nodes when a request is received, so that the forwarding times are reduced, and efficient forwarding is realized;
The method as shown in fig. 2 comprises the steps of:
Step1, a space terahertz 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 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, classifying the data packets entering the network according to the name prefixes, wherein the data packets with the same name prefixes are divided into a group, and the data packets have space-time correlation;
Step4, generating a corresponding dynamic local routing table aiming at each data packet group, wherein the dynamic local routing table comprises the name prefix of the data packet group and corresponding routing information, including node or link information of the next hop;
Step 5, when the network node receives a data packet, searching a corresponding dynamic local routing table according to the name prefix of the data packet, if a matched dynamic local routing table is found, the node makes a forwarding decision according to the information in the dynamic local routing table, and sends the data packet to a proper next hop node;
Step 6, the network node implements a cache mode, and the common data packet group is stored in a local cache so as to reduce the request to a remote node, thereby reducing network delay and resource consumption;
And 7, dynamically updating the dynamic local routing table and the cache to adapt to the change of the network traffic, and carrying out self-adaptive adjustment on the dynamic local routing table and the cache according to new conditions when the time-space local characteristics of the network traffic change.
Therefore, the invention reduces unnecessary data packet forwarding by fully utilizing the space-time correlation among the data packets, improves the performance and throughput of the network, adapts to the high-capacity and high-rate communication characteristics of the terahertz frequency band, and ensures that the network can effectively process high-capacity data traffic. The invention effectively reduces redundant data transmission in the network through the cache management and dynamic updating mechanism, carries out self-adaptive adjustment according to the requirements of different application tasks and the change of network flow, maintains the high-efficiency performance of the network, improves the resource utilization rate and reduces the energy consumption.
Example two
Referring to fig. 3, fig. 3 is a schematic structural diagram of a space terahertz network packet efficient forwarding apparatus according to an embodiment of the present invention. The space terahertz network packet efficient forwarding device described in fig. 3 is applied to the technical field of satellite communication networks, so that space terahertz network packets are efficiently forwarded, and the embodiment of the invention is not limited. As shown in fig. 3, the spatial terahertz network packet efficient forwarding apparatus may include the following operations:
S301, a 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 N satellites with large capacity from the M backbone satellites as software defined network controllers to form a control plane, and selecting other M-N 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;
S302, a data packet classification module is used for classifying data packets entering the space terahertz network to obtain K data packet groups, wherein K is a positive integer;
S303, a dynamic local routing table construction module, which is used for processing each data packet group to obtain a dynamic local routing table of each data packet group, wherein the dynamic local routing table of each data packet group forms a dynamic local routing table set;
S304, a dynamic local routing table query module, configured to, when a node of the space terahertz network receives a data packet to be forwarded, search in the dynamic local routing table set according to a name prefix of the data packet to be forwarded, and obtain a dynamic local routing table of the data packet to be forwarded;
And S305, a data packet forwarding module, which is used for nodes of the space terahertz network to send the data packet to be forwarded to a next hop node according to the dynamic local routing table of the data packet to be forwarded, so as to realize efficient forwarding of the space terahertz network packet.
Example III
Referring to fig. 4, fig. 4 is a schematic structural diagram of another spatial terahertz network packet efficient forwarding apparatus according to an embodiment of the present invention. The space terahertz network packet efficient forwarding device described in fig. 4 is applied to the technical field of satellite communication networks, so that space terahertz network packets are efficiently forwarded, and the embodiment of the invention is not limited. As shown in fig. 4, the spatial terahertz network packet efficient forwarding 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 code stored in the memory 401 for performing the steps in the spatial terahertz network packet efficient forwarding method described in embodiment one.
Example IV
The embodiment of the invention discloses a computer readable storage medium storing a computer program for electronic data exchange, wherein the computer program causes a computer to execute the steps in the space terahertz network packet efficient forwarding method described in the embodiment one.
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 network packet efficient forwarding method and a space terahertz network packet efficient forwarding device, which are disclosed by the embodiment of the invention only 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 space terahertz network packet efficient forwarding method is characterized by comprising the following steps of:
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 N satellites with large capacity from the M backbone satellites as software defined network controllers to form a control plane, and selecting other M-N satellites as transponders to form a data plane;
the control plane is used for naming the space terahertz network data packet; the naming 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;
Addressing nodes in the space terahertz network according to the content unique identifier to obtain node address information;
The data plane is used for carrying out data packet processing;
s2, classifying the data packets entering the space terahertz network according to the name prefixes of the data packets, and dividing the data packets with the same name prefixes into groups to obtain K data packet groups, wherein K is a positive integer;
S3, processing each data packet group to obtain a dynamic local routing table of each data packet group, wherein the dynamic local routing table of each data packet group forms a dynamic local routing table set and comprises the following steps:
s31, processing each data packet group to obtain the name prefix of each data packet group;
S32, processing each data packet group to obtain the routing information of each data packet group;
S33, processing each data packet group to obtain next hop node information and link information of each data packet group;
s34, the name prefix of each data packet group, the routing information of each data packet group, the next hop node information of each data packet group and the link information form a dynamic local routing table of each data packet group;
S4, when the node of the space terahertz network receives a data packet to be forwarded, searching in the dynamic local routing table set according to the name prefix of the data packet to be forwarded to obtain a dynamic local routing table of the data packet to be forwarded;
and S5, the node of the space terahertz network sends the data packet to be forwarded to a next-hop node according to the dynamic local routing table of the data packet to be forwarded, so that the space terahertz network packet is forwarded efficiently.
2. The efficient spatial terahertz network packet forwarding method of claim 1, wherein after the node of the spatial terahertz network sends the data packet to be forwarded to a next-hop node according to the dynamic local routing table of the data packet to be forwarded, the method further includes:
The nodes of the space terahertz network adopt a cache mode, and the common data packet group is stored in a local cache, so that the request to a remote node is reduced, and the network delay and the resource consumption are reduced.
3. The efficient spatial terahertz network packet forwarding method of claim 1, wherein after the node of the spatial terahertz network sends the data packet to be forwarded to a next-hop node according to the dynamic local routing table of the data packet to be forwarded, the method further includes:
when the space-time local characteristics of network traffic change, the data packet group of specific content appears or disappears at certain space-time points in the space terahertz network;
According to the newly appeared or disappeared data packet, the node of the space terahertz network adjusts the cache content, the dynamic local routing table is updated according to the name prefix of the newly appeared data packet group, and the data packet group which does not appear for a long time is deleted.
4. A space terahertz network packet efficient forwarding 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 N satellites with large capacity from the M backbone satellites as software defined network controllers to form a control plane, and selecting other M-N satellites as transponders to form a data plane;
the control plane is used for naming the space terahertz network data packet; the naming 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;
Addressing nodes in the space terahertz network according to the content unique identifier to obtain node address information;
The data plane is used for carrying out data packet processing;
the data packet classification module is used for classifying the data packets entering the space terahertz network according to the name prefixes of the data packets, and the data packets with the same name prefixes are divided into groups to obtain K data packet groups, wherein K is a positive integer;
The dynamic local routing table construction module is configured to process each data packet group to obtain a dynamic local routing table of each data packet group, where the dynamic local routing table of each data packet group forms a dynamic local routing table set, and includes:
s31, processing each data packet group to obtain the name prefix of each data packet group;
S32, processing each data packet group to obtain the routing information of each data packet group;
S33, processing each data packet group to obtain next hop node information and link information of each data packet group;
s34, the name prefix of each data packet group, the routing information of each data packet group, the next hop node information of each data packet group and the link information form a dynamic local routing table of each data packet group;
the dynamic local routing table query module is used for searching in the dynamic local routing table set according to the name prefix of the data packet to be forwarded when the node of the space terahertz network receives the data packet to be forwarded, so as to obtain a dynamic local routing table of the data packet to be forwarded;
And the data packet forwarding module is used for the nodes of the space terahertz network to send the data packet to be forwarded to the next hop node according to the dynamic local routing table of the data packet to be forwarded, so that the space terahertz network packet is efficiently forwarded.
5. A space terahertz network packet efficient forwarding 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 network packet efficient forwarding method of any one of claims 1-3.
6. A computer-readable storage medium storing computer instructions that, when invoked, perform the spatial terahertz network packet efficient forwarding method of any one of claims 1-3.
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