CN106789661A - A kind of information forwarding method and space information network system - Google Patents
A kind of information forwarding method and space information network system Download PDFInfo
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- CN106789661A CN106789661A CN201611251240.4A CN201611251240A CN106789661A CN 106789661 A CN106789661 A CN 106789661A CN 201611251240 A CN201611251240 A CN 201611251240A CN 106789661 A CN106789661 A CN 106789661A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/12—Shortest path evaluation
- H04L45/121—Shortest path evaluation by minimising delays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
- H04B7/18584—Arrangements for data networking, i.e. for data packet routing, for congestion control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/12—Shortest path evaluation
- H04L45/124—Shortest path evaluation using a combination of metrics
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/12—Shortest path evaluation
- H04L45/125—Shortest path evaluation based on throughput or bandwidth
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/14—Routing performance; Theoretical aspects
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Abstract
The embodiment of the invention provides a kind of information forwarding method and space information network system, in the method, reference satellite receives the destination address sent as the first terminal equipment of transmitting terminal, the corresponding routed path of various routing policies for prestoring is determined respectively, it is determined that the performance information needed for arriving at the corresponding second terminal equipment as receiving terminal in location by every routed path, and every kind of routing policy and corresponding routed path and performance information are fed back into first terminal equipment, so that performance information of the first terminal equipment instruction user according to received by, the selection target routing policy from various routing policies, and target routed path and packet are sent the starting point satellite into target routed path；Packet and target routed path that starting point satellite reception first terminal equipment sends, according to target routed path, forward the packet to second terminal equipment.The present invention can reach the practical strategies demand according to user, the purpose forwarded to information.
Description
Technical field
The present invention relates to technical field of satellite communication, more particularly to a kind of information forwarding method and space information network system
System.
Background technology
Existing space information network system includes：Multi-satellite, communication connection and multi-satellite point between multi-satellite
Do not communicated to connect with multiple terminal devices, when a certain satellite reception to the packet sent as the terminal device of transmitting terminal
When, the satellite is that the routing policy of the fixation stored according to itself sends the packet to the terminal device as destination.
Because the routing policy in the mode of above- mentioned information forwarding is fixed routing policy, i.e., no matter terminal device will be sent out
The type of the packet for sending why type, routed path is determined using same routing policy, and based on identified route
Path forwards to packet, and this causes that user's is alternative poor, it is impossible to meet practical strategies demand, for example, fixed
Routing policy be the minimum routing policy of time delay, and the routing policy that user needs is the route plan with maximum throughput
Slightly, now, will be unable to meet the practical strategies demand of user.
It can be seen that, how according to the practical strategies demand of user, information is forwarded, it is a problem demanding prompt solution.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of information forwarding method and space information network system, to reach root
According to the practical strategies demand of user, the purpose forwarded to information.Concrete technical scheme is as follows：
A kind of space information network system, the system includes：Multi-satellite, communicates to connect between the multi-satellite,
And the multi-satellite is communicated to connect with multiple terminal devices respectively：
Every satellite, it is true respectively for when the destination address as the first terminal equipment transmission of transmitting terminal is received
Surely the corresponding routed path of various routing policies for prestoring, it is determined that reaching the destination address pair by every routed path
Performance information needed for the second terminal equipment as receiving terminal answered, and by every kind of routing policy and corresponding routed path and
Performance information feeds back to the first terminal equipment, so that performance of the first terminal equipment instruction user according to received by
Information, the selection target routing policy from various routing policies, and target routed path and the packet are sent to described
Starting point satellite in target routed path, wherein, the target routed path is the corresponding route road of the target routing policy
Footpath, the destination address is the address of first terminal equipment packet to be sent the is carried second terminal equipment；
Also, when the packet and the target routed path that the first terminal equipment sends is received, root
According to the target routed path, the packet is forwarded to the second terminal equipment.
Optionally, various routing policies include connection figure CGR routing policies, maximum throughput HMMT routing policies and
In multilayer satellite network MLSR routing policies at least two.
Optionally, when the various routing policies for prestoring are CGR routing policies, HMMT routing policies and MLSR route plan
When slightly, every satellite determines the corresponding routed path of various routing policies for prestoring respectively, it is determined that by every route road
Performance information needed for the footpath arrival corresponding second terminal equipment as receiving terminal of destination address, specially：
According to the link information chart for prestoring, the corresponding routed path of CGR routing policies is determined, wherein, the CGR
The corresponding routed path of routing policy is the route for reaching the corresponding second terminal equipment as receiving terminal of destination address
Path；
Calculate according to the corresponding routed path of the CGR routing policies, the minimum needed for reaching the second terminal equipment
Time delay；
According to the HMMT routing policies for prestoring, it is determined that it is corresponding as the second of receiving terminal to reach the destination address
The a plurality of maximum throughput routed path of terminal device；
The minimum maximum throughput routed path of transmission time in a plurality of maximum throughput routed path is defined as
The corresponding routed path of HMMT routing policies；
Determine the corresponding maximum throughput of the corresponding routed path of the HMMT routing policies；
According to the MLSR routing policies for prestoring, it is determined that it is corresponding as the second of receiving terminal to reach the destination address
The a plurality of reference routed path of terminal device；
A plurality of object reference routed path is determined from a plurality of reference routed path according to time delay and bandwidth；
The maximum object reference routed path of handling capacity in a plurality of object reference routed path is defined as described
The corresponding routed path of MLSR routing policies；
Determine the corresponding maximum throughput of the corresponding routed path of the MLSR routing policies, minimal time delay and maximum belt
It is wide.
Optionally, the communication protocol for being used between every satellite and terminal device is IP over CCSDS AOS agreements.
Optionally, the communication protocol for being used between each satellite is Bundle agreements.
A kind of information forwarding method, is applied to space information network system, and the system includes：Multi-satellite is described more
Communicated to connect between satellite, and the multi-satellite is communicated to connect with multiple terminal devices respectively, methods described includes：
Reference satellite receives the destination address sent as the first terminal equipment of transmitting terminal, determines what is prestored respectively
The corresponding routed path of various routing policies, it is determined that being reached by every routed path, the destination address is corresponding to be used as reception
Performance information needed for the second terminal equipment at end, and every kind of routing policy and corresponding routed path and performance information are fed back
To the first terminal equipment, so that performance information of the first terminal equipment instruction user according to received by, from various
Selection target routing policy in routing policy, and target routed path and the packet are sent to the target routed path
In starting point satellite, wherein, the target routed path be the corresponding routed path of the target routing policy, the destination
Location is the address of first terminal equipment packet to be sent the is carried second terminal equipment；
Packet and the target routed path that first terminal equipment described in the starting point satellite reception sends, according to institute
Target routed path is stated, the packet is forwarded to the second terminal equipment.
Optionally, various routing policies include connection figure CGR routing policies, maximum throughput HMMT routing policies and
In multilayer satellite network MLSR routing policies at least two.
Optionally, when the various routing policies for prestoring are CGR routing policies, HMMT routing policies and MLSR route plan
When slightly, the corresponding routed path of various routing policies for determining to prestore respectively, it is determined that being arrived by every routed path
The step of performance information up to needed for the corresponding second terminal equipment as receiving terminal of the destination address, including：
According to the link information chart for prestoring, the corresponding routed path of CGR routing policies is determined, wherein, the CGR
The corresponding routed path of routing policy is the route for reaching the corresponding second terminal equipment as receiving terminal of destination address
Path；
Calculate according to the corresponding routed path of the CGR routing policies, the minimum needed for reaching the second terminal equipment
Time delay；
According to the HMMT routing policies for prestoring, it is determined that it is corresponding as the second of receiving terminal to reach the destination address
The a plurality of maximum throughput routed path of terminal device；
The minimum maximum throughput routed path of transmission time in a plurality of maximum throughput routed path is defined as
The corresponding routed path of HMMT routing policies；
Determine the corresponding maximum throughput of the corresponding routed path of the HMMT routing policies；
According to the MLSR routing policies for prestoring, it is determined that it is corresponding as the second of receiving terminal to reach the destination address
The a plurality of reference routed path of terminal device；
A plurality of object reference routed path is determined from a plurality of reference routed path according to time delay and bandwidth；
The maximum object reference routed path of handling capacity in a plurality of object reference routed path is defined as described
The corresponding routed path of MLSR routing policies；
Determine the corresponding maximum throughput of the corresponding routed path of the MLSR routing policies, minimal time delay and maximum belt
It is wide.
Optionally, the communication protocol for being used between every satellite and terminal device is IP over CCSDS AOS agreements.
Optionally, the communication protocol for being used between each satellite is Bundle agreements.
In the embodiment of the present invention, by way of prestoring various routing policies on every satellite so that satellite exists
When receiving the destination address as the terminal device transmission of transmitting terminal, various routes can be determined according to various routing policies
Path, and packet is forwarded based on the selected target routing policy of user corresponding target routed path, thus, can
To meet the practical strategies demand of user, the practical strategies demand according to user, the purpose forwarded to information are reached.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of space information network system provided in an embodiment of the present invention；
Fig. 2 is a kind of schematic flow sheet of information forwarding method provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
In order to solve prior art problem, a kind of information forwarding method and space information network are the embodiment of the invention provides
System.
The space information network system for being provided the embodiment of the present invention first below is introduced.
Space information network system is one has autonomous acquisition of information, information transfer, information distribution and space-time service etc.
Multi-functional integrated information system, is substantially a kind of system of achievable global information network integration, therefore, space-based information
Network system can provide comprehensive and many for aspects such as the meteorology in global range, resource exploration, survey of deep space and communication broadcasts
The Integrated service of level.
As shown in figure 1, space information network system can include：Multi-satellite 10, communicates to connect between multi-satellite 10,
And multi-satellite 10 is communicated to connect with multiple terminal devices 20 respectively；
Every satellite 10, for when the destination address as the transmission of first terminal equipment 20 of transmitting terminal is received, dividing
The corresponding routed path of various routing policies for prestoring is not determined, it is determined that arriving at location pair by every routed path
Performance information needed for the second terminal equipment 20 as receiving terminal answered, and by every kind of routing policy and corresponding routed path
First terminal equipment 20 is fed back to performance information, so that performance letter of the instruction user of first terminal equipment 20 according to received by
Breath, the selection target routing policy from various routing policies, and target routed path and packet are sent to target route road
Starting point satellite in footpath, wherein, target routed path is the corresponding routed path of target routing policy, and destination address is first whole
Address that the packet to be sent of end equipment 20 is carried, second terminal equipment 20；
Also, when the packet and target routed path of first terminal equipment transmission is received, road is route according to target
Footpath, forwards the packet to second terminal equipment 20.
Because when row information forwarding is entered, each user has different policy requirements, therefore, in order to reach according to user's
Practical strategies demand, the purpose forwarded to information is stored in the every satellite 10 in space information network system in advance
Various routing policies, wherein, various routing policies can route including CGR (Contact Graph Routing, connection figure)
Strategy, HMMT (Hybrid Multi-copies Maximum Throughput, maximum throughput) routing policies and MLSR
In (multilayered satellite routing algorithm, multilayer satellite network) routing policy at least two.
Above-mentioned three kinds of routing policies are described in detail below：
CGR routing policies：With the path delay of time minimum criterion, the advance planning of link between the communication node that places one's entire reliance upon,
And each communication node knows the advance planning, so that it is determined that going out the minimum routed path of time delay.Advantage is network overhead
It is small, with certain flow control capability, but for the constellation structures that change, it is necessary to update the whole network nodal information, on star
Processing requirement is higher.
Specify that every is linked as one-way linkage in CGR routing policies, for example：Assuming that a link includes satellite A, satellite B
With satellite C, then this be linked as satellite A- satellite B- satellites C, it is not possible to be satellite A- satellite B- satellites A, every chain of link
Packet is connect containing transmission node, receiving node, link time started, link end time and link rate.When a certain communication section
After point determines the link information between all communication nodes, link information chart is constructed, the link information chart can be one
List, the list stores a plurality of link information with each communication node as receiving node, wherein, check for convenience, should
A plurality of link information in list can carry out descending arrangement according to the link end time.
In addition, the link information chart in CGR routing policies is real-time update, specific renewal process can be：Root
According to current time, judge to whether there is link information out of date in link information chart, believe if there is link out of date
Breath, link information out of date is deleted, and judges whether new link information, if there is new link information, will be new
Link information added in link information chart.
HMMT routing policies：Criterion is to the maximum with throughput path, according to the connection sequential of each hop link in path, it is determined that
Effective connection period of link, so as to calculate route road by the minimum maximum throughput of the transmission time of source node to destination node
Footpath.
MLSR routing policies：With time delay, bandwidth, handling capacity equilibrium as criterion, according to the chain between each satellite in network
Situation, meeting the cycle between each satellite of calculating are connect, and time delay and bandwidth are considered with identical proportion, determine that handling capacity is maximum
Routed path, i.e., the maximum routed path of this is determined handling capacity is to have considered gulping down in the case of bandwidth and time delay
The maximum routed path of the amount of telling, rather than only consider the maximum routed path of the handling capacity that handling capacity is obtained.
In the case of at least two in above-mentioned three kinds of routing policies are previously stored with every satellite, first terminal sets
It is standby receive every kind of routing policy and corresponding routed path and performance information after, by received every kind of routing policy and right
The performance information answered shows that into display screen user is according to shown performance information, the selection target from various routing policies
Routing policy.
First terminal equipment receive the selected target routing policy of user, by target routed path and packet send to
Starting point satellite in target routed path, wherein, target routed path is the corresponding routed path of target routing policy.
Accordingly, in one implementation, above-mentioned every satellite forwards the packet to according to target routed path
Two terminal devices, specially：
According to target routed path, judge whether itself is purpose satellite, if it is, sending data packets to second terminal
Equipment, if not, by packet and target routed path send into target routed path the next satellite adjacent with itself with
Next satellite is set to forward the packet to second terminal equipment.
It should be noted that the communication protocol used between every satellite and terminal device is IP over CCSDS AOS
Agreement, wherein, CCSDS is consultative committee for space data system Consultative Committee for Space Data
Systems, AOS are Advanced Orbiting Systems Advanced Orbiting System, CCSDS AOS for Aerospace Data Systems are seeked advice from
The committee formulate on air-air and Air-Ground data management system, IP over CCSDS AOS agreements are in CCSDS AOS
On the basis of realize the carrying of IP datagram, set up the agreement of route, the configuration in terms of exchange and the management of space IP network border element,
The seamless connection of space information network and ground network can be realized, i.e., can be real by the IP over CCSDS AOS agreements
Existing communication between satellite and terminal device.
The communication protocol used between each satellite is Bundle agreements, and the Bundle agreements are delay-disruption tolerant network DTN
Inter-satellite link Bundle layer protocols, the Bundle agreements can by packet by " storage-wait-forwarding " by way of
It is transmitted and receives, i.e., is the communication being capable of achieving between each satellite by the Bundle agreements.
Wherein, DTN (Delay and Disruption Tolerant Network, delay-disruption tolerant network DTN) is in star
Border internet etc. research in propose towards link it is big delay and a connection breaking network technology.In these networks, due to net
The reasons such as the movement of network node, radio communication interference, node energy limitation, cause communication link frequently to interrupt, time delay is big, mistake
Rate is high, segmentation occurs often in network, and then causes that the communication of common end end cannot be completed or communication performance is difficult to meet application
Demand.In order to realize the communication between nodes, the route of " storage-wait-forwarding " is taken in the disconnected Delay Tolerant Network of appearance
Forward mode.I.e. one node must utilized and " depositing before running into suitable another node by message storage to caching
The routing mode of storage-forwarding " transmit a message to physics or it is social on closer to destination node, until being finally transferred to mesh
Node.Wherein, the mode for packet being transmitted and being received by way of " storage-wait-forwarding " is prior art,
Will not be repeated here.
In the embodiment of the present invention, by way of prestoring various routing policies on every satellite so that satellite exists
When receiving the destination address as the terminal device transmission of transmitting terminal, various routes can be determined according to various routing policies
Path, and packet is forwarded based on the selected target routing policy of user corresponding target routed path, thus, can
To meet the practical strategies demand of user, the practical strategies demand according to user, the purpose forwarded to information are reached.
Optionally, because user needs to determine any routing policy of selection according to performance information, therefore, every satellite exists
Receive after destination address, the corresponding routed path of various routing policies for prestoring is determined respectively, it is determined that passing through every
Routed path arrive at the corresponding second terminal equipment as receiving terminal in location needed for performance information.
When the various routing policies for prestoring are CGR routing policies, HMMT routing policies and MLSR routing policies,
In a kind of implementation, above-mentioned every satellite determines the corresponding routed path of various routing policies for prestoring respectively, it is determined that
Performance information needed for arriving at the corresponding second terminal equipment as receiving terminal in location by every routed path, can be with
Specially：
According to the link information chart for prestoring, the corresponding routed path of CGR routing policies is determined, wherein, CGR routes
The corresponding routed path of strategy is the routed path for arriving at the corresponding second terminal equipment as receiving terminal in location；
Calculate according to the corresponding routed path of CGR routing policies, the minimal time delay needed for reaching second terminal equipment；
According to the HMMT routing policies for prestoring, it is determined that arriving at the corresponding second terminal as receiving terminal in location
The a plurality of maximum throughput routed path of equipment；
The minimum maximum throughput routed path of transmission time in a plurality of maximum throughput routed path is defined as HMMT
The corresponding routed path of routing policy；
Determine the corresponding maximum throughput of the corresponding routed path of HMMT routing policies；
According to the MLSR routing policies for prestoring, it is determined that arriving at the corresponding second terminal as receiving terminal in location
The a plurality of reference routed path of equipment；
A plurality of object reference routed path is determined from a plurality of reference routed path according to time delay and bandwidth；
The maximum object reference routed path of handling capacity in a plurality of object reference routed path is defined as MLSR route plans
Slightly corresponding routed path；
Determine the corresponding maximum throughput of the corresponding routed path of MLSR routing policies, minimal time delay and maximum bandwidth.
It is directed to CGR routing policies：Due to being stored in the link information figure that prestores with each communication node to connect
The a plurality of link information of node is received, be therefore, it can according to the link information chart for prestoring, it is determined that arriving at location correspondence
The second terminal equipment as receiving terminal routed path, and identified routed path is defined as CGR routing policies pair
The routed path answered, it is determined that after the corresponding routed path of CGR routing policies, calculating according to the corresponding route of CGR routing policies
Path, the minimal time delay needed for reaching second terminal equipment, minimal time delay is the corresponding performance information of CGR routing policies.
For HMMT routing policies：According to the connection sequential of each hop link in path, effective connection period of link is determined,
Calculating reaches a plurality of maximum throughput routed path up to the corresponding second terminal equipment as receiving terminal of destination address, on
State and the minimum maximum throughput routed path of transmission time in a plurality of maximum throughput routed path is defined as HMMT route plans
Slightly corresponding routed path, can be specially：
According to the scale of space information network, default bar maximum throughput is specified from a plurality of maximum throughput routed path
Routed path forwards routed path as message, forwards routed path to forward a plurality of presetting message by the default bar message, will
The corresponding message forwarding route road of presetting message of the corresponding second terminal equipment as receiving terminal in location is arrived at first
Footpath is defined as the corresponding routed path of HMMT routing policies.
Thus, forwarded simultaneously using a plurality of presetting message in HMMT routing policies, it is to avoid because single message exists
The problem of the routing error that forwarding may meet with network, when presence arrives at location corresponding the second end as receiving terminal
During the presetting message of end equipment, the second terminal equipment can send information to other satellites in space information network, notify
Other satellites remove the presetting message for being successfully forwarded to second terminal equipment, prevent excessive presetting message to internetworking
Can impact.
It is determined that after the corresponding routed path of HMMT routing policies, determining the corresponding routed path correspondence of HMMT routing policies
Maximum throughput, the maximum throughput is the corresponding performance information of HMMT routing policies.
For MLSR routing policies：It is above-mentioned that a plurality of target ginseng is determined from a plurality of reference routed path according to time delay and bandwidth
Routed path is examined, can be specially：
By in a plurality of reference routed path, time delay is less than default delay threshold and band is wider than a plurality of of pre-set bandwidths threshold value
It is defined as object reference routed path with reference to routed path.
It is determined that after the corresponding routed path of MLSR routing policies, determining the corresponding routed path correspondence of MLSR routing policies
Maximum throughput, minimal time delay and maximum bandwidth, the maximum throughput, minimal time delay and maximum bandwidth are MLSR route plans
Slightly corresponding performance information.
A kind of information forwarding method for being provided the embodiment of the present invention below is introduced.
It should be noted that a kind of information forwarding method that the embodiment of the present invention is provided is applied to space information network system
System, wherein, the space information network system includes：Multi-satellite, between multi-satellite communicate to connect, and multi-satellite respectively with
Multiple terminal devices are communicated to connect.
As shown in Fig. 2 a kind of information forwarding method provided in an embodiment of the present invention, is applied to space information network system,
Can include：
S201：Reference satellite receives the destination address sent as the first terminal equipment of transmitting terminal, determines respectively advance
Storage the corresponding routed path of various routing policies, it is determined that by every routed path arrive at location it is corresponding be used as connect
Performance information needed for the second terminal equipment of receiving end, and every kind of routing policy and corresponding routed path and performance information is anti-
First terminal equipment is fed to, so that performance information of the first terminal equipment instruction user according to received by, from various route plans
Slightly middle selection target routing policy, and target routed path and packet are sent the starting point satellite into target routed path.
Because when row information forwarding is entered, each user has different policy requirements, therefore, in order to reach according to user's
Practical strategies demand, the purpose forwarded to information stores many in advance in every satellite in space information network system
Routing policy is planted, wherein, various routing policies can include CGR routing policies, HMMT routing policies and MLSR routing policies
In at least two, in detail to the introduction of every kind of routing policy with reference to the introduction in above-mentioned space information network system, herein not
Repeat again.
Because user needs to determine any routing policy of selection according to performance information, therefore, reference satellite is being received
As after the destination address that the first terminal equipment of transmitting terminal sends, the various routing policies correspondence for prestoring is determined respectively
Routed path, it is determined that needed for arriving at the corresponding second terminal equipment as receiving terminal in location by every routed path
Performance information.
In one implementation, when the various routing policies for prestoring be CGR routing policies, HMMT routing policies and
During MLSR routing policies, the above-mentioned corresponding routed path of various routing policies for determining to prestore respectively, it is determined that passing through every
Routed path arrive at the corresponding second terminal equipment as receiving terminal in location needed for performance information, can include：
According to the link information chart for prestoring, the corresponding routed path of CGR routing policies is determined, wherein, CGR routes
The corresponding routed path of strategy is the routed path for arriving at the corresponding second terminal equipment as receiving terminal in location；
Calculate according to the corresponding routed path of CGR routing policies, the minimal time delay needed for reaching second terminal equipment；
According to the HMMT routing policies for prestoring, it is determined that arriving at the corresponding second terminal as receiving terminal in location
The a plurality of maximum throughput routed path of equipment；
The minimum maximum throughput routed path of transmission time in a plurality of maximum throughput routed path is defined as HMMT
The corresponding routed path of routing policy；
Determine the corresponding maximum throughput of the corresponding routed path of HMMT routing policies；
According to the MLSR routing policies for prestoring, it is determined that arriving at the corresponding second terminal as receiving terminal in location
The a plurality of reference routed path of equipment；
A plurality of object reference routed path is determined from a plurality of reference routed path according to time delay and bandwidth；
The maximum object reference routed path of handling capacity in a plurality of object reference routed path is defined as MLSR route plans
Slightly corresponding routed path；
Determine the corresponding maximum throughput of the corresponding routed path of MLSR routing policies, minimal time delay and maximum bandwidth.
It is directed to CGR routing policies：Due to being stored in the link information figure that prestores with each communication node to connect
The a plurality of link information of node is received, be therefore, it can according to the link information chart for prestoring, it is determined that arriving at location correspondence
The second terminal equipment as receiving terminal routed path, and identified routed path is defined as CGR routing policies pair
The routed path answered, it is determined that after the corresponding routed path of CGR routing policies, calculating according to the corresponding route of CGR routing policies
Path, the minimal time delay needed for reaching second terminal equipment, minimal time delay is the corresponding performance information of CGR routing policies.
For HMMT routing policies：According to the connection sequential of each hop link in path, effective connection period of link is determined,
Calculating reaches a plurality of maximum throughput routed path up to the corresponding second terminal equipment as receiving terminal of destination address, on
State and the minimum maximum throughput routed path of transmission time in a plurality of maximum throughput routed path is defined as HMMT route plans
Slightly corresponding routed path, Ke Yiwei：
According to the scale of space information network, default bar maximum throughput is specified from a plurality of maximum throughput routed path
Routed path forwards routed path as message, forwards routed path to forward a plurality of presetting message by the default bar message, will
The corresponding message forwarding route road of presetting message of the corresponding second terminal equipment as receiving terminal in location is arrived at first
Footpath is defined as the corresponding routed path of HMMT routing policies.
Thus, forwarded simultaneously using a plurality of presetting message in HMMT routing policies, it is to avoid because single message exists
The problem of the routing error that forwarding may meet with network, when presence arrives at location corresponding the second end as receiving terminal
During the presetting message of end equipment, the second terminal equipment can send information to other satellites in space information network, notify
Other satellites remove the presetting message for being successfully forwarded to second terminal equipment, prevent excessive presetting message to internetworking
Can impact.
It is determined that after the corresponding routed path of HMMT routing policies, determining the corresponding routed path correspondence of HMMT routing policies
Maximum throughput, the maximum throughput is the corresponding performance information of HMMT routing policies.
For MLSR routing policies：It is above-mentioned that a plurality of target ginseng is determined from a plurality of reference routed path according to time delay and bandwidth
Routed path is examined, can be specially：
By in a plurality of reference routed path, time delay is less than default delay threshold and band is wider than a plurality of of pre-set bandwidths threshold value
It is defined as object reference routed path with reference to routed path.
It is determined that after the corresponding routed path of MLSR routing policies, determining the corresponding routed path correspondence of MLSR routing policies
Maximum throughput, minimal time delay and maximum bandwidth, the maximum throughput, minimal time delay and maximum bandwidth are MLSR route plans
Slightly corresponding performance information.
Needed for it is determined that arriving at the corresponding second terminal equipment as receiving terminal in location by every routed path
Performance information after, every kind of routing policy and corresponding routed path and performance information are fed back into first terminal equipment, wherein,
Destination address is the address of first terminal equipment packet to be sent is carried second terminal equipment.
After first terminal equipment receives every kind of routing policy and corresponding routed path and performance information, will be received
Every kind of routing policy and corresponding performance information show into display screen, user according to shown performance information, from various
Selection target routing policy in routing policy.
First terminal equipment receive the selected target routing policy of user, by target routed path and packet send to
Starting point satellite in target routed path, wherein, target routed path is the corresponding routed path of target routing policy.
S202：Packet and target routed path that starting point satellite reception first terminal equipment sends, route according to target
Path, forwards the packet to second terminal equipment.
Starting point satellite is after the packet and target routed path for receiving the transmission of first terminal equipment, you can according to target
Routed path, forwards the packet to second terminal equipment, wherein, it is above-mentioned according to target routed path, forward the packet to
Second terminal equipment, Ke Yiwei：
According to target routed path, judge whether itself is purpose satellite, if it is, sending data packets to second terminal
Equipment, if not, by packet and target routed path send into target routed path the next satellite adjacent with itself with
Next satellite is set to forward the packet to second terminal equipment.
Accordingly, next satellite forwards the packet to the process of second terminal equipment, Ke Yiwei：
According to target routed path, judge whether itself is purpose satellite, if it is, sending data packets to second terminal
Equipment, if not, by packet and target routed path send into target routed path the next satellite adjacent with itself with
Next satellite is set to forward the packet to second terminal equipment.
It should be noted that the communication protocol used between every satellite and terminal device is IP over CCSDS AOS
Agreement, wherein, CCSDS is consultative committee for space data system Consultative Committee for Space Data
Systems, AOS are Advanced Orbiting Systems Advanced Orbiting System, CCSDS AOS for Aerospace Data Systems are seeked advice from
The committee formulate on air-air and Air-Ground data management system, IP over CCSDS AOS agreements are in CCSDS AOS
On the basis of realize the carrying of IP datagram, set up the agreement of route, the configuration in terms of exchange and the management of space IP network border element,
The seamless connection of space information network and ground network can be realized, i.e., can be real by the IP over CCSDS AOS agreements
Existing communication between satellite and terminal device.
The communication protocol used between each satellite is Bundle agreements, and the Bundle agreements are delay-disruption tolerant network DTN
Inter-satellite link Bundle layer protocols, the Bundle agreements can by packet by " storage-wait-forwarding " by way of
It is transmitted and receives, i.e., be the communication being capable of achieving between each satellite by the Bundle agreements, detailed appearance holds suspension late
The introduction of network will not be repeated here with reference to the introduction in above-mentioned space information network system, and by packet by " storage-etc.
Treat-forward " mode be transmitted and the mode that receives is prior art, will not be repeated here.
In the embodiment of the present invention, by way of prestoring various routing policies on every satellite so that satellite exists
When receiving the destination address as the terminal device transmission of transmitting terminal, various routes can be determined according to various routing policies
Path, and packet is forwarded based on the selected target routing policy of user corresponding target routed path, thus, can
To meet the practical strategies demand of user, the practical strategies demand according to user, the purpose forwarded to information are reached.
Understand for convenience, method shown in Fig. 2 is described in detail below by a specific embodiment：
For example：Assuming that space information network system includes satellite A, satellite B and satellite C, it is whole as the first of transmitting terminal
End equipment is terminal device H, is terminal device M as the terminal device of receiving terminal, it is assumed that reference satellite is satellite A, it is assumed that pre-
The various routing policies for first storing are CGR routing policies and HMMT routing policies；
The destination address that reference satellite A receiving terminal apparatus H sends, determines the CGR routing policies pair for prestoring respectively
The corresponding routed path K of routed path J and HMMT routing policy for answering, it is determined that arriving at location correspondence by routed path J
Terminal device M needed for performance information J1With the corresponding terminal device M in location is arrived at by routed path K needed for property
Can information K1, and by CGR routing policies and corresponding routed path J and performance information J1With HMMT routing policies and corresponding road
By path K and performance information K1Feed back to terminal device H；
Performance information J of the terminal device H instruction users according to received by1With performance information K1, from CGR routing policies and
Selection target routing policy in HMMT routing policies, it is assumed that selected target routing policy is CGR routing policies, then target road
It is routed path J by path, it is assumed that the path included by target routed path J is：Satellite B- satellite C- satellite A- terminal devices
M, then terminal device H target routed path J and packet are sent the starting point satellite B into target routed path J；
Packet and target routed path J that starting point satellite B receiving terminal apparatus H sends, according to target routed path J,
Forward the packet to terminal device M.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or deposited between operating
In any this actual relation or order.And, term " including ", "comprising" or its any other variant be intended to
Nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
Each embodiment in this specification is described by the way of correlation, identical similar portion between each embodiment
Divide mutually referring to what each embodiment was stressed is the difference with other embodiment.Especially for system reality
Apply for example, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is referring to embodiment of the method
Part explanation.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent substitution and improvements made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention
It is interior.
Claims (10)
1. a kind of space information network system, the system includes：Multi-satellite, communicates to connect between the multi-satellite, and
The multi-satellite is communicated to connect with multiple terminal devices respectively, it is characterised in that：
Every satellite, for when the destination address as the first terminal equipment transmission of transmitting terminal is received, determining respectively pre-
The corresponding routed path of various routing policies for first storing, it is determined that it is corresponding to reach the destination address by every routed path
As the performance information needed for the second terminal equipment of receiving terminal, and by every kind of routing policy and corresponding routed path and performance
Feedback of the information is to the first terminal equipment, so that performance of the first terminal equipment instruction user according to received by is believed
Breath, the selection target routing policy from various routing policies, and target routed path and the packet are sent to the mesh
Starting point satellite in mark routed path, wherein, the target routed path is the corresponding routed path of the target routing policy,
The destination address is the address of first terminal equipment packet to be sent the is carried second terminal equipment；
Also, when the packet and the target routed path that the first terminal equipment sends is received, according to institute
Target routed path is stated, the packet is forwarded to the second terminal equipment.
2. system according to claim 1, it is characterised in that various routing policies include that connection figure CGR route plan
Slightly, at least two in maximum throughput HMMT routing policies and multilayer satellite network MLSR routing policies.
3. system according to claim 2, it is characterised in that when the various routing policies for prestoring are that CGR route plan
When summary, HMMT routing policies and MLSR routing policies, every satellite determines that the various routing policies for prestoring are corresponding respectively
Routed path, it is determined that reaching the corresponding second terminal equipment institute as receiving terminal of destination address by every routed path
The performance information for needing, specially：
According to the link information chart for prestoring, the corresponding routed path of CGR routing policies is determined, wherein, the CGR routes
The corresponding routed path of strategy is the routed path for reaching the corresponding second terminal equipment as receiving terminal of destination address；
Calculate according to the corresponding routed path of the CGR routing policies, the minimal time delay needed for reaching the second terminal equipment；
According to the HMMT routing policies for prestoring, it is determined that reaching the corresponding second terminal as receiving terminal of the destination address
The a plurality of maximum throughput routed path of equipment；
The minimum maximum throughput routed path of transmission time in a plurality of maximum throughput routed path is defined as HMMT
The corresponding routed path of routing policy；
Determine the corresponding maximum throughput of the corresponding routed path of the HMMT routing policies；
According to the MLSR routing policies for prestoring, it is determined that reaching the corresponding second terminal as receiving terminal of the destination address
The a plurality of reference routed path of equipment；
A plurality of object reference routed path is determined from a plurality of reference routed path according to time delay and bandwidth；
The maximum object reference routed path of handling capacity in a plurality of object reference routed path is defined as the MLSR roads
By tactful corresponding routed path；
Determine the corresponding maximum throughput of the corresponding routed path of the MLSR routing policies, minimal time delay and maximum bandwidth.
4. the system according to claim any one of 1-3, it is characterised in that used between every satellite and terminal device
Communication protocol is IP over CCSDS AOS agreements.
5. the system according to claim any one of 1-3, it is characterised in that the communication protocol used between each satellite is
Bundle agreements.
6. a kind of information forwarding method, is applied to space information network system, and the system includes：Multi-satellite, described many
Communicated to connect between satellite, and the multi-satellite is communicated to connect with multiple terminal devices respectively, it is characterised in that methods described
Including：
Reference satellite receives the destination address sent as the first terminal equipment of transmitting terminal, and determine to prestore respectively is various
The corresponding routed path of routing policy, it is determined that it is corresponding as receiving terminal to reach the destination address by every routed path
Performance information needed for second terminal equipment, and every kind of routing policy and corresponding routed path and performance information are fed back into institute
First terminal equipment is stated, so that performance information of the first terminal equipment instruction user according to received by, from various routes
Selection target routing policy in strategy, and target routed path and the packet are sent into the target routed path
Starting point satellite, wherein, the target routed path is the corresponding routed path of the target routing policy, and the destination address is
Address that first terminal equipment packet to be sent is carried, the second terminal equipment；
Packet and the target routed path that first terminal equipment described in the starting point satellite reception sends, according to the mesh
Mark routed path, the second terminal equipment is forwarded to by the packet.
7. method according to claim 6, it is characterised in that various routing policies include that connection figure CGR route plan
Slightly, at least two in maximum throughput HMMT routing policies and multilayer satellite network MLSR routing policies.
8. method according to claim 7, it is characterised in that when the various routing policies for prestoring are that CGR route plan
When summary, HMMT routing policies and MLSR routing policies, the corresponding route of various routing policies for determining to prestore respectively
Path, it is determined that by needed for every routed path arrival corresponding second terminal equipment as receiving terminal of destination address
The step of performance information, including：
According to the link information chart for prestoring, the corresponding routed path of CGR routing policies is determined, wherein, the CGR routes
The corresponding routed path of strategy is the routed path for reaching the corresponding second terminal equipment as receiving terminal of destination address；
Calculate according to the corresponding routed path of the CGR routing policies, the minimal time delay needed for reaching the second terminal equipment；
According to the HMMT routing policies for prestoring, it is determined that reaching the corresponding second terminal as receiving terminal of the destination address
The a plurality of maximum throughput routed path of equipment；
The minimum maximum throughput routed path of transmission time in a plurality of maximum throughput routed path is defined as HMMT
The corresponding routed path of routing policy；
Determine the corresponding maximum throughput of the corresponding routed path of the HMMT routing policies；
According to the MLSR routing policies for prestoring, it is determined that reaching the corresponding second terminal as receiving terminal of the destination address
The a plurality of reference routed path of equipment；
A plurality of object reference routed path is determined from a plurality of reference routed path according to time delay and bandwidth；
The maximum object reference routed path of handling capacity in a plurality of object reference routed path is defined as the MLSR roads
By tactful corresponding routed path；
Determine the corresponding maximum throughput of the corresponding routed path of the MLSR routing policies, minimal time delay and maximum bandwidth.
9. the method according to claim any one of 6-8, it is characterised in that used between every satellite and terminal device
Communication protocol is IP over CCSDS AOS agreements.
10. the method according to claim any one of 6-8, it is characterised in that the communication protocol used between each satellite
It is Bundle agreements.
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| CN107241268A (en) * | 2017-07-20 | 2017-10-10 | 北京航空航天大学 | Local multipath method for routing and device based on satellite-based ADS B message satellite networks |
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| CN111464442A (en) * | 2019-01-22 | 2020-07-28 | 华为技术有限公司 | Method and device for routing data packet |
| CN115801093A (en) * | 2022-10-14 | 2023-03-14 | 西安空间无线电技术研究所 | Path planning method for guaranteeing end-to-end deterministic time delay of satellite network |
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