CN111092818B - Multilayer multi-domain satellite network topology abstraction method based on service time delay - Google Patents
Multilayer multi-domain satellite network topology abstraction method based on service time delay Download PDFInfo
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- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/02—Topology update or discovery
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- H04B7/14—Relay systems
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- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18521—Systems of inter linked satellites, i.e. inter satellite service
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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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- H04L45/02—Topology update or discovery
- H04L45/04—Interdomain routing, e.g. hierarchical routing
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- H—ELECTRICITY
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- H04L45/12—Shortest path evaluation
- H04L45/121—Shortest path evaluation by minimising delays
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- H04L45/302—Route determination based on requested QoS
Abstract
A multilayer multi-domain satellite network topology abstract method based on service time delay belongs to the technical field of satellite networks. The invention aims to provide a multilayer multi-domain satellite network topology abstraction method based on service time delay, which is characterized in that the characteristic of fixed connection between satellite nodes in the same orbital plane is utilized, the multilayer multi-domain satellite network topology abstraction is carried out by taking the time delay requirement of service or the transmission time delay of the service in a satellite network as constraint, and the lossless multi-domain satellite network topology is dynamically constructed.
Description
Technical Field
The invention relates to a multilayer multi-domain satellite network topology abstract method based on service time delay, and belongs to the technical field of satellite networks.
Background
The process of abstracting or abstracting the physical topology details of a network to reduce the size of state information is referred to as topology abstraction. The abstracted topology is a compact description of the nodes and links in the original physical topology. The principle of topology abstraction is to reduce communication overhead and storage overhead of network nodes, and less information can be transmitted as input of a routing algorithm by using the topology abstraction technology. The common topological abstraction modes include single-point convergence, full-connection convergence and star-shaped topological convergence. Single-node convergence is the convergence of the entire network into a single point. In a unified single node aggregation each gateway node advertises the same parameter (bandwidth, delay) vector to other networks, while in a differentiated single node aggregation each node advertises a different parameter (bandwidth, delay) vector to other domains. The full-connection convergence provides full connection of gateway nodes, calculates convergence topology by sacrificing time and space complexity, and can well reflect details of physical topology. The star topology convergence is a compromise method compared with single node convergence and full-connection convergence, and boundary nodes in each domain are connected with a virtual intermediate node through virtual links.
The existing topology abstraction technology is mainly applied to a ground complex network, and almost no research is carried out on the topology abstraction technology of the satellite network. If the traditional topological abstract method is directly applied to a multilayer and multi-domain network scene, three defects exist in the traditional method.
First, the prior art is mainly applied to a ground fixed network topology, and has no dynamic change characteristic, and due to the dynamic nature of a satellite network topology, the abstract topology needs to be frequently updated by directly using the prior art, and the network computing burden is increased.
Secondly, the prior art does not consider the characteristics of multilayer and multi-domain of the satellite network, and the satellite network cannot be directly mapped into a ground network for calculation due to the dynamic property of the nodes and the dynamic property of the GEO coverage area.
Third, in the prior art, it is considered that a static routing protocol is adopted in a network with a constant topology structure for packet forwarding, and a dynamic routing mode of a satellite network based on an SDN architecture cannot be satisfied.
Disclosure of Invention
The technical problem solved by the invention is as follows: the method overcomes the defects of the prior art, provides a multilayer multi-domain satellite network topology abstraction method based on service time delay, simplifies the topology abstraction process by utilizing the characteristics of satellite orbits and well reserves network information, and the proxy satellite obtained by applying the method does not need to reselect and calculate when the topology is updated, only needs to replace the single-domain controller to the right neighbor of the current controller (clockwise calculation), and updates the link weight to complete the updating, thereby reducing the frequency of topology updating and the calculation burden of the satellite.
The technical solution of the invention is as follows: the multilayer multi-domain satellite network topology abstraction method based on service time delay comprises the following steps:
when the ground station has service delay requirements, the ground station multi-domain controller issues a topology establishment request to the GEO single-domain controller;
after receiving the topology establishment request, the GEO single-domain controller carries out topology aggregation on the network in the domain of the GEO single-domain controller, generates a single-domain topology and then sends the single-domain topology to the ground station multi-domain controller;
the ground station multi-domain controller classifies and aggregates the single-domain topology into multi-domain topology according to the service delay requirement, and completes the abstraction of the satellite network topology;
and when the proxy satellite of any one GEO single-domain controller in the current domain of the GEO single-domain controller leaves the coverage range of the GEO single-domain controller, the GEO single-domain controller in the adjacent direction acquires the proxy satellite of the previous GEO single-domain controller, and topology aggregation and subsequent steps are carried out again.
Further, the topology aggregation comprises generating node abstractions of the GEO single-domain controller proxy satellites and generating link abstractions of logical links between every two proxy satellites; the proxy satellite and logical links form a single domain topology.
Further, the node abstraction method is that each GEO single-domain controller abstracts the satellites covered by the GEO single-domain controller according to the orbit: and selecting the satellite with the longest existence time in the GEO single-domain controller domain as a proxy satellite for each orbit.
Further, the selecting of the satellite with the longest time existing in the GEO single domain controller domain as the proxy satellite specifically includes: and the focus of the GEO satellite, which is intersected with the orbit, is respectively marked as an entry point and an exit point according to the running direction of the satellite, and the satellite close to the entry point is selected as a proxy satellite.
Further, the method of link abstraction is as follows: the weight value of a logic link between every two agent satellites is the time used by the longest route for packet transmission between the two agent satellites; and constructing the logical link between every two proxy satellites according to the weight of the logical link between every two proxy satellites.
Further, the service delay requirement includes a delay insensitive type, a type in which the delay is greater than a preset value, and a type in which the delay is less than the preset value.
Further, the method for classifying and aggregating single-domain topologies into multi-domain topologies according to service delay requirements includes: when the service delay requirement is of a delay insensitive type, combining single-domain topologies into a non-overlapping and non-leaking track agent set as a multi-domain topology; the proxy satellites in the non-overlapping orbit proxy set are all located in different satellite orbits and include all satellite orbits.
Further, the method for classifying and aggregating single-domain topologies into multi-domain topologies according to service delay requirements includes: when the service time delay requirement is that the time delay is larger than a preset value, if one GEO satellite can obtain all proxy satellites, selecting a single-domain topology of the GEO satellite and a single-domain topology of the GEO satellite farthest from the GEO satellite to be in full connection to serve as a multi-domain topology; if not, the single-domain topology of any one GEO satellite and the single-domain topology of another GEO satellite are fully connected to form a multi-domain topology.
Further, the another GEO satellite is one GEO satellite adjacent to the GEO satellite on the left or right, or another GEO satellite opposite to the GEO satellite.
Further, the method for classifying and aggregating single-domain topologies into multi-domain topologies according to service delay requirements includes: when the service time delay requirement is that the time delay is smaller than a preset value, selecting at least half of the single-domain topology of the GEO satellite to be in full connection; the at least half of the GEO satellites include a pair of GEO satellites that are furthest apart, and the GEO satellites of the other GEO satellites that have a lower link weight.
Compared with the prior art, the invention has the advantages that:
(1) the invention provides a multi-domain abstract topology with lower new frequency for dynamic network topology of satellite
(2) The invention converts the dynamic topology into the static abstract network, which is convenient for calculation and forwarding
(3) The invention realizes the time delay grading forwarding of the service through a small number of proxy nodes, and reduces the complexity of more than topology
Drawings
FIG. 1 is a schematic diagram of link connectivity conversion;
FIG. 2 is a schematic diagram of a topology abstraction method based on time delay;
fig. 3 is a schematic diagram of a topology abstraction aggregation method based on service delay.
Detailed Description
The invention is further explained and illustrated in the following figures and detailed description of the specification.
A multilayer multi-domain satellite network topology abstract method based on service time delay,
the satellite network topology has the characteristics of periodic change, continuous connection with orbital plane satellite links and periodic connection of different orbital plane satellite links, and the periodic connection links can be converted into continuous links through repeated forwarding in the orbital plane. As shown in fig. 1, satellite a, satellite B, and satellite C are each satellites located in three orbital planes, and the links in orbital plane a1, a2, A3, a4, a5, a6, a7, A8 are continuously linked throughout the operation of the network. The links between different planes are periodically connected, such as links A1- > B5. But by the forwarding process a1- > a2- > A3- > a4- > B3- > B4- > B5 between the a track plane and the B track plane, the link a1- > B5 can be considered as a continuous link in case of traffic delay tolerance. Similarly, links between different satellite orbit layers can be converted into continuous links with different time delays as costs, and the link connectivity conversion idea is the basis for the realization of the patent.
Fig. 2 shows a topology abstraction method based on service delay, where the whole process can be divided into 4 steps, which include the following steps:
step 1: a multi-domain topology establishment request, namely when the ground station has a service delay requirement, the ground station multi-domain controller issues the topology establishment request to the GEO single-domain controller, and the GEO single-domain controller sends a satellite orbit topology structure corresponding to the GEO currently to the ground station multi-domain controller.
Step 2: single domain topology abstraction-a single domain controller performs topology aggregation on the networks in its domain when receiving a topology establishment request; the method of topology aggregation comprises node abstractions (2.1) and link abstractions (2.2).
2.1 node abstraction, each single-domain controller abstracts the covered satellite according to the orbit: selecting a proxy satellite for each orbit; in order to reduce the updating frequency of the abstract topology, the one with the longest existence time in the domain is selected; if the satellite runs clockwise, the satellite running orbit is selected to be the satellite with the coverage area closest to the left focus point of the intersection of the satellite coverage area and the orbit (the satellite runs anticlockwise, namely the satellite is selected to be close to the right focus point).
2.2, abstracting a link, wherein after the node is selected, the weight of a logic link between every two proxy satellites is the time used by the longest route for packet transmission between the two proxy satellites, and the longer the link delay is, the larger the cost is.
The proxy satellite and the logic link form a single-domain topology;
and step 3: and multi-domain topology aggregation, namely classifying and aggregating single-domain topologies into multi-domain topologies according to service delay requirements. The aggregation process is divided into traffic classification (3.1) and topology aggregation (3.2)
3.1 the service is divided into three types according to the delay requirement, the delay is insensitive, the delay is greater than T, the delay is less than T, and T is the time for the service to run for one circle in a track plane.
3.2, carrying out topology aggregation according to the service delay requirement;
combining single domain topologies into a non-seamless set of track agents as an aggregated single domain topology for best effort traffic; the agent satellites in the orbit agent set are all positioned in different satellite orbits and comprise all orbits;
for the service with the time delay larger than T, if one GEO satellite can obtain all the proxy satellites, the GEO and the single-domain topology of the GEO satellite with the farthest distance are selected to be in full connection to serve as the aggregated single-domain topology. If no GEO exists, one GEO and the left and right neighbors of the GEO can be used for making an unreliated proxy set, and the other GEO opposite to the GEO can be used for fully connecting the two proxy nodes;
for the service with the time delay smaller than T, at least half of the single-domain topology is selected to be fully connected, the selection principle is that a pair of GEOs (two farthest distant) is selected firstly to divide the orbit into two parts, and the single-domain topology with the small link weight in other GEO satellites is selected as the aggregation.
And 4, step 4: and (3) topology updating, wherein any one proxy satellite in the current domain leaves the coverage range of the GEO single domain controller, and the single domain controller in the adjacent direction acquires the proxy satellite of the previous single domain controller and returns to 2.2.
The following detailed description of the embodiments of the present invention will be provided with reference to the drawings and examples, so that how to apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented. It should be noted that, as long as there is no conflict, the embodiments and the features of the embodiments of the present invention may be combined with each other, and the technical solutions formed are within the scope of the present invention.
As shown in fig. 3, in the present embodiment, 4 GEO satellites are arranged, and a common Walker constellation, Walker24/3/2 constellation is taken as an example, the whole satellite topology is divided into two GEO and LEO layers, wherein 24 LEO layers are divided into three orbital planes, the orbital planes are uniformly distributed, and satellites in the orbital planes are uniformly distributed. The medium orbit satellite can be used as a low-speed ring network for forwarding, when topology is abstracted, only one satellite is required to be extracted from each orbit to serve as a node proxy of one orbit, services in the whole orbit are abstracted and converged to the proxy node, complexity of topology abstraction of the satellite is reduced, and then only a link cost needs to be set according to time delay and aggregation is carried out according to time delay requirements of the services.
Step 1: topology establishment request-the multi-domain controller issues a topology update instruction or a multi-domain topology establishment instruction.
Step 2: single-domain topological abstraction-each GEO is a single-domain controller, abstracts the satellite network in the coverage area, and the abstraction is divided into node abstraction and link abstraction. For a satellite network covered by GEO1 that includes satellites in orbital planes of orbit one and orbit two, the direction of travel of the satellites is shown by the arrows in the figure. And selecting one proxy node in each of the first orbit and the second orbit, and selecting the one with the longest time in the domain, namely 2 satellites in the circle in the graph. The link weight is T, and T is the time used by the service for transmitting one circle in the track plane.
And step 3: multi-domain topology aggregation, namely performing topology aggregation according to the service delay requirement, and combining single-domain topologies into a non-overlapping and non-leaking track agent set for best effort service, as shown by topology aggregation (r) in the figure; for the service with the time delay larger than T, if one satellite can obtain abstraction of all orbit proxy nodes such as topology 2 in the figure, topology 2 and topology 4 are selected to be fully connected to obtain topology aggregation II. If no GEO exists, one GEO and the left and right neighbors of the GEO can be used for making an unreliated proxy set, and the other GEO opposite to the GEO can be used for fully connecting the two proxy nodes; for the service with the time delay less than T, half of the abstract topologies are selected for full connection, and for this embodiment, topologies 1, 2, and 3 or topologies 1, 4, and 3 or topologies 2, 3, and 4 or topologies 2, 1, and 4 may be selected. However, due to environment and other reasons, the actual link delay and the link conditions are different, and a group with good link conditions is selected for aggregation, and the result is shown in the topology aggregation (c) in the figure.
And 4, step 4: topology updating, namely starting topology updating when the current proxy node leaves the coverage of the single-domain controller, but because of the characteristic of satellite orbit, when the proxy node in the GEO1 leaves the coverage of the domain 1, the proxy node enters the domain 2 and meets the requirement of serving as a new proxy node of the domain 2, in the method, topology updating only needs to update the name of the domain where the proxy node is located, and reselection is not needed.
Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.
Claims (1)
1. The multilayer multi-domain satellite network topology abstraction method based on service time delay is characterized by comprising the following steps:
when the ground station has service delay requirements, the ground station multi-domain controller issues a topology establishment request to the GEO single-domain controller;
after receiving the topology establishment request, the GEO single-domain controller carries out topology aggregation on the network in the domain of the GEO single-domain controller, generates a single-domain topology and then sends the single-domain topology to the ground station multi-domain controller;
the topology abstraction of the satellite network specifically comprises: single domain topology abstraction-a single domain controller performs topology aggregation on the networks in its domain when receiving a topology establishment request; the topology aggregation comprises generating node abstractions (2.1) of GEO single domain controller proxy satellites and generating link abstractions (2.2) of logical links between every two proxy satellites; the proxy satellite and the logic link form a single-domain topology;
(2.1) the node abstraction method is that each GEO single-domain controller abstracts the covered satellite according to the orbit: selecting a satellite with the longest existence time in a GEO single-domain controller domain as a proxy satellite in each orbit; the selecting of the satellite with the longest existence time in the GEO single-domain controller domain as the proxy satellite specifically comprises the following steps: the coverage range of the GEO satellite is intersected with the track, the coverage range is respectively marked as an entry point and an exit point according to the running direction of the satellite, and the satellite close to the entry point is selected as a proxy satellite;
(2.2) the link abstraction method comprises the following steps: the weight value of a logic link between every two agent satellites is the time used by the longest route for packet transmission between the two agent satellites; constructing a logic link between every two proxy satellites according to the weight of the logic link between every two proxy satellites;
the proxy satellite and the logic link form a single-domain topology;
the ground station multi-domain controller classifies and aggregates the single-domain topology into multi-domain topology according to the service delay requirement, and completes the abstraction of the satellite network topology;
the service time delay requirements comprise a time delay insensitive type, a type that the time delay is greater than a preset value and a type that the time delay is less than the preset value;
the method for classifying and aggregating the single-domain topology into the multi-domain topology according to the service delay requirement comprises the following steps:
when the service delay requirement is of a delay insensitive type, combining single-domain topologies into a non-overlapping and non-leaking track agent set as a multi-domain topology; the proxy satellites in the non-overlapping orbit proxy set are all positioned in different satellite orbits and comprise all the satellite orbits;
when the service time delay requirement is that the time delay is larger than a preset value, if one GEO satellite can obtain all proxy satellites, selecting a single-domain topology of the GEO satellite and a single-domain topology of the GEO satellite farthest from the GEO satellite to be in full connection to serve as a multi-domain topology; if not, the single-domain topology of any one GEO satellite and the single-domain topology of another GEO satellite are fully connected to serve as a multi-domain topology;
the other GEO satellite is one GEO satellite adjacent to the GEO satellite in the left or right direction, or another GEO satellite opposite to the GEO satellite;
when the service time delay requirement is that the time delay is smaller than a preset value, selecting at least half of the single-domain topology of the GEO satellite to be in full connection; the at least half of the GEO satellites comprise a pair of GEO satellites with the farthest distance and GEO satellites with small link weights in other GEO satellites;
and (3) when the proxy satellite of any one GEO single-domain controller in the current domain of the GEO single-domain controller leaves the coverage range of the GEO single-domain controller, the GEO single-domain controllers in the adjacent directions acquire the proxy satellite of the previous GEO single-domain controller, and perform topology aggregation again, and the step (2.2) is returned.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101299713A (en) * | 2008-03-21 | 2008-11-05 | 哈尔滨工业大学深圳研究生院 | Method for setting multilayer satellite network system route |
| CN104902515A (en) * | 2015-06-08 | 2015-09-09 | 西安电子科技大学 | Load aware-based multi-layer satellite network routing method |
| CN105743717A (en) * | 2016-05-04 | 2016-07-06 | 武汉大学 | Space and ground integrated spatial information network system based on SDN technique and communication method of the system |
| CN107332768A (en) * | 2017-06-06 | 2017-11-07 | 烽火通信科技股份有限公司 | A kind of cross-domain path calculation method of multiple domain controller |
| CN107517077A (en) * | 2017-08-28 | 2017-12-26 | 西安电子科技大学 | Space networking double layer minipellet model and the routing optimization method of topology control |
| CN109257091A (en) * | 2018-09-18 | 2019-01-22 | 北京邮电大学 | Global load balancing star ground contract network network device and method |
| CN109889446A (en) * | 2019-03-11 | 2019-06-14 | 西安电子科技大学 | Isomery converged network minimal time delay determining method of path based on SDN |
| CN110034817A (en) * | 2019-04-29 | 2019-07-19 | 北京邮电大学 | Low-orbit satellite network route method and device based on software defined network |
| WO2019204312A1 (en) * | 2018-04-18 | 2019-10-24 | Hughes Network Systems, Llc | Maintaining and distributing state due to temporary failures in a shared bandwidth network |
| CN110493131A (en) * | 2019-09-24 | 2019-11-22 | 大连大学 | A kind of design method of Information Network routing policy under SDN framework |
-
2019
- 2019-11-28 CN CN201911193641.2A patent/CN111092818B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101299713A (en) * | 2008-03-21 | 2008-11-05 | 哈尔滨工业大学深圳研究生院 | Method for setting multilayer satellite network system route |
| CN104902515A (en) * | 2015-06-08 | 2015-09-09 | 西安电子科技大学 | Load aware-based multi-layer satellite network routing method |
| CN105743717A (en) * | 2016-05-04 | 2016-07-06 | 武汉大学 | Space and ground integrated spatial information network system based on SDN technique and communication method of the system |
| CN107332768A (en) * | 2017-06-06 | 2017-11-07 | 烽火通信科技股份有限公司 | A kind of cross-domain path calculation method of multiple domain controller |
| CN107517077A (en) * | 2017-08-28 | 2017-12-26 | 西安电子科技大学 | Space networking double layer minipellet model and the routing optimization method of topology control |
| WO2019204312A1 (en) * | 2018-04-18 | 2019-10-24 | Hughes Network Systems, Llc | Maintaining and distributing state due to temporary failures in a shared bandwidth network |
| CN109257091A (en) * | 2018-09-18 | 2019-01-22 | 北京邮电大学 | Global load balancing star ground contract network network device and method |
| CN109889446A (en) * | 2019-03-11 | 2019-06-14 | 西安电子科技大学 | Isomery converged network minimal time delay determining method of path based on SDN |
| CN110034817A (en) * | 2019-04-29 | 2019-07-19 | 北京邮电大学 | Low-orbit satellite network route method and device based on software defined network |
| CN110493131A (en) * | 2019-09-24 | 2019-11-22 | 大连大学 | A kind of design method of Information Network routing policy under SDN framework |
Non-Patent Citations (2)
| Title |
|---|
| "EVPN/SDN assisted live VM migration between Geo-Distributed data centers";Kyoomars Alizadeh Noghani等;《IEEE》;20180913;全文 * |
| "多域软件定义网络路由与控制器负载均衡算法研究";张爱民;《万方数据库》;20190925;全文 * |
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