CN106549703B - The method and system of Incorporate network medium and low earth orbit satellites communication - Google Patents

The method and system of Incorporate network medium and low earth orbit satellites communication Download PDF

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Publication number
CN106549703B
CN106549703B CN201610949771.4A CN201610949771A CN106549703B CN 106549703 B CN106549703 B CN 106549703B CN 201610949771 A CN201610949771 A CN 201610949771A CN 106549703 B CN106549703 B CN 106549703B
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satellite
ground
user terminal
subregion
address
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CN106549703A (en
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潘恬
黄韬
刘江
张雪贝
张娇
谢人超
杨帆
刘韵洁
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Beijing University of Posts and Telecommunications
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Beijing University of Posts and Telecommunications
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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
    • H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H04B7/18539—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
    • 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
    • H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H04B7/18558—Arrangements for managing communications, i.e. for setting up, maintaining or releasing a call between stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention provides a kind of method and system of Incorporate network medium and low earth orbit satellites communication, this method comprises: the first satellite obtains the mark of all ground subregions pre-established；First satellite moves to the second ground subregion by the first ground subregion, according to the mark of all ground subregions, the address of the first satellite by the first ground subregion with first identifier the first address, be changed to second address in the second ground subregion with second identifier；First satellite is to the second ground subregion broadcasting satellite packet, so that the first user terminal for receiving satellite information packet maintains the local information table of the first user terminal according to satellite information packet；First satellite obtains and basis, and the local communication packet sent by the first user terminal according to the local information table of the first user terminal establishes the communication connection of the first user terminal and target terminal.Method of the invention reduces the wasting of resources of communication system in Incorporate network, has saved the communication resource.

Description

The method and system of Incorporate network medium and low earth orbit satellites communication
Technical field
The present invention relates to field of communication technology, method more particularly to the communication of Incorporate network medium and low earth orbit satellites and System.
Background technique
The concept of MM (Mobile Management, mobile management), is suggested and makes in a cellular communication network earliest With.In mobile radio network, network needs track mobile user terminal, and provide service for it, so that mobile User terminal between being capable of normal communication, it is ensured that user terminal maintains and other users terminal or fixed knot during the motion Communication between point.In order to guarantee that any position of the user terminal in whole network coverage area can be steadily from network Middle acquisition service, the effect of MM become especially prominent.
So-called MM is mentioned between the mark (node name) of mobile node and its address (position of node Relative Network structure) The time-varying of confession maps, and is a kind of basic fundamental for supporting roaming service customer's one new service area of arrival to go to receive to service.These nets Network includes: Internet (interconnection network, internet), satellite network, Ad hoc network (Ad hoc net Network is a kind of multi-hop, acentric, ad hoc deployed wireless networks, also known as multihop network) or its mixing any form network. The major function of MM is that the seamless roam of user, equipment and service is effectively supported in entire service network.There are two main by MM Research in terms of: location management and handover management.In general, location management processing user database inquiry and storage with And the transmission of paging signal, handover management keep connectivity by controlling the change of access point on the move.
The addressing problem of LEO (Low Earth Orbit, Low Earth Orbit) satellite network is different from the fixation net of land Network and mobile network, LEO satellite are in high-speed moving state relative to ground, and inter-satellite link and satellite-ground link is caused to need to carry out frequency Numerous switching.The inter-satellite link of satellite network can be divided into two kinds: inter-satellite link and different rails in same orbital plane between satellite Inter-satellite link between the satellite of road face.Between the satellite of different orbital planes, by satellite motion direction, antenna be directed toward and antenna with There is periodically switch (i.e. link on-off) and ask in the limitation of the factors such as track ability, the inter-satellite link between different orbital plane satellites Topic.Since, there are the inter-satellite link of a plurality of different orbital planes, the network as caused by above-mentioned reason is opened up in Constellation of Low Earth Orbit Satellites The variation for flutterring structure is very frequent, and the topological structure of whole network has high dynamic variation characteristic.In addition to this, since LEO is defended Elevation is lower (700-1500km), and the area coverage over the ground of single satellite is small (to account for about 3%-the 5% of global surface product, minimum 10 ° of the elevation angle), Constellation of Low Earth Orbit Satellites needs covering the whole world are made of plurality of satellite, and up to tens of Dao hundreds of.It is right For the Constellation of Low Earth Orbit Satellites of Global coverage, the relative position between LEO satellite constantly changes at any time, and there is a large amount of Overlapping coverage areas, LEO satellite user can see more LEO satellites simultaneously in most cases.
In the network towards Incorporate, when certain LEO satellite provides service for certain user terminal, since LEO is defended Star is in real time kinematics state, which may and no longer be that the optimal access satellite of the user terminal (or has left Access range), it is accessed then the user terminal needs to be switched to other LEO satellites.Due to the topology of spatial network itself Variation and the quick update of terrestrial user information, LEO satellite needs the routing table maintained will be very huge, and the routing table By with the change in topology frequent updating of spatial network and ground network, this makes the addressing scheme of LEO satellite be faced with preceding institute The challenge not having.
LEO satellite network Satellite number is more, the orbital period is short, network topology change is fast and overlay area is small (compares For high rail satellite), this feature results in the data transmission procedure of LEO satellite and the difference of ground network.In existing LEO satellite In network, mobile IP technology is widely applied, the mobile of a large number of users terminal can cause a large amount of location updating message and position The time delay that more new information transmission belt is come.And in satellite communication system, since satellite is constantly in high-speed motion state, clothes The business area of coverage is also constantly in variation, therefore even if user terminal remains static relative to ground, also the same frequent face Face the switching with satellite.
In existing mobile IP technology, as (Paging Extensions for Mobile IP, mobile IP are sought P-MIP Exhale extension) agreement and Cellular IP (cellular ip) agreement, corresponding expansion has been carried out on the basis of basic mobile IP protocol Exhibition, increases IP paging function, but also all have certain problems simultaneously, such as P-MIP agreement, does not support the paging of localization Strategy, with the movement of LEO satellite, it is more and more remoter that user understands distance registration satellite, generates longer forwarding chain, can cause to prolong When while generate excessive signalling loads, cause the waste of telecommunication system resources.And Cellular IP is not provided with paging Area, no matter this consume satellite area size will in satellite network can big using paging is regularly sent come update message The wireless network resource of amount and the energy of user terminal, cause the waste of telecommunication system resources.
In short, using existing mobile IP technology, will cause the wave of telecommunication system resources in Incorporate network Take.
Summary of the invention
The method for being designed to provide a kind of communication of Incorporate network medium and low earth orbit satellites of the embodiment of the present invention and it is System, to realize the communication resource for saving communication system in Incorporate network.Specific technical solution is as follows:
A kind of method of Incorporate network medium and low earth orbit satellites communication, is applied to satellite, comprising:
First satellite obtains the mark of all ground subregions pre-established, wherein the mark of all ground subregions It include: the first identifier of the first ground subregion and the second identifier of the second ground subregion, first satellite is Incorporate Any satellite in network, first ground subregion and second ground distributor area are respectively all ground pre-established Any one ground subregion in subregion, second ground subregion are different from first ground subregion；
First satellite moves to second ground subregion by first ground subregion, according to all ground The mark of subregion, the address of first satellite is by the first address in the first ground subregion with first identifier, change To have the second address of second identifier in the second ground subregion；
First satellite is to the second ground subregion broadcasting satellite packet, so as to receive the satellite information packet First user terminal maintains the local information table of first user terminal according to the satellite information packet, wherein the satellite Information in packet includes: the address of first satellite；
First satellite obtains and basis, is believed by first user terminal according to the local of first user terminal The local communication packet that table is sent is ceased, the communication connection of first user terminal and target terminal is established, wherein the local is logical Information in letter packet includes: the address of first user terminal, the address of the target terminal and first user terminal Communication data, the target terminal be with first user terminal establish communication connection communication target.
A kind of method of Incorporate network medium and low earth orbit satellites communication, is applied to user terminal, comprising:
First user terminal obtains the mark of all ground subregions pre-established, and first user terminal is according to third The third of ground subregion identifies, when determining that first user terminal is in third ground subregion, first user terminal Address, wherein first user terminal is the user terminal in the subregion of the third ground, the mark of all ground subregions Knowledge includes: the third mark of third ground subregion, and third ground subregion is for the second ground subregion or the third Face subregion is an adjacent ground subregion of second ground subregion, and second ground subregion is in addition to the first ground subregion Any one ground subregion, first ground subregion be any one ground subregion；
First user terminal receives, from the first satellite to the satellite information packet of second ground sectorization broadcast, institute State the local information table that the first user terminal maintains first user terminal according to the satellite information packet, wherein described One satellite is the satellite that the second ground subregion is moved to by the first ground subregion, and the address of first satellite is by being in first Subregion interior the first address with first identifier in ground is changed to second ground in the second ground subregion with second identifier Location, the information in the satellite information packet include: the address of first satellite, and the first identifier is first ground distributor The mark in area, the second identifier are the mark of second ground subregion；
First user terminal is according to the local information table of first user terminal, and the transmission of the first satellite of Xiang Suoshu is originally Ground communication bag, so that first user terminal establishes the communication connection with target terminal by first satellite, wherein institute Stating the information in local communication packet includes: the address of first user terminal, the address of the target terminal and described first The communication data of user terminal.
A kind of system of Incorporate network medium and low earth orbit satellites communication, is applied to satellite, comprising:
Identifier acquisition module, for obtaining the mark of all ground subregions pre-established, wherein all ground distributors The mark in area includes: the first identifier of the first ground subregion and the second identifier of the second ground subregion, and first satellite is day Any satellite in ground integrated network, first ground subregion and second ground distributor area are respectively to pre-establish Any one ground subregion in all ground subregions, second ground subregion are different from first ground subregion；
Satellite address switching module, for moving to second ground by first ground subregion in first satellite When the subregion of face, according to the mark of all ground subregions, by the address of first satellite by the first ground subregion The first address with first identifier is changed to the second address in the second ground subregion with second identifier；
Satellite information packet broadcast module is used for the second ground subregion broadcasting satellite packet, so that described in receiving First user terminal of satellite information packet maintains the local information table of first user terminal according to the satellite information packet, In, the information in the satellite information packet includes: the address of first satellite；
First communication building block, it is whole according to first user by first user terminal for obtaining simultaneously basis The local communication packet that the local information table at end is sent, establishes the communication connection of first user terminal and target terminal, wherein Information in the local communication packet includes: the address of first user terminal, the address of the target terminal and described The communication data of one user terminal, the target terminal are the communication target that communication connection is established with first user terminal.
A kind of system of Incorporate network medium and low earth orbit satellites communication, is applied to user terminal, comprising:
Terminal address determining module, for obtaining the mark of all ground subregions pre-established, according to third ground distributor The third in area identifies, when determining that the first user terminal is in third ground subregion, the address of first user terminal, wherein First user terminal is the user terminal in the subregion of the third ground, and the mark of all ground subregions includes: institute The third mark of third ground subregion is stated, third ground subregion is the second ground subregion or third ground subregion is An adjacent ground subregion of second ground subregion, second ground subregion are either one or two of in addition to the first ground subregion Ground subregion, first ground subregion are any one ground subregion；
Satellite information packet receiving module, for receiving from the first satellite to the satellite information of second ground sectorization broadcast Packet, the local information table of first user terminal is maintained according to the satellite information packet, wherein first satellite is by the One ground subregion moves to the satellite of the second ground subregion, and the address of first satellite in the first ground subregion by having There is the first address of first identifier, be changed to the second address in the second ground subregion with second identifier, the satellite Information in packet includes: the address of first satellite, and the first identifier is the mark of first ground subregion, institute State the mark that second identifier is second ground subregion；
Second communication building block, for the local information table according to first user terminal, the first satellite of Xiang Suoshu Local communication packet is sent, so that first user terminal establishes the communication connection with target terminal by first satellite, Wherein, the information in the local communication packet includes: the address of first user terminal, the address of the target terminal and institute State the communication data of the first user terminal.
The method and system of Incorporate network medium and low earth orbit satellites communication provided in an embodiment of the present invention, the address of satellite Think with itself corresponding ground subregion corresponding, the user terminal in satellite ground subregion corresponding with itself is communicated, and is supported The paging policy of localization shortens forwarding chain, reduces delay and signalling loads.Satellite is wide to itself corresponding ground subregion Satellite information packet is broadcast, user terminal sends registration packet according to the local information table of itself, reduces the transmission frequency of registration packet, subtract The consumption of the energy of wireless network resource and user terminal is lacked.In short, low in the Incorporate network of the embodiment of the present invention The method of low-orbit satellite communication reduces the wasting of resources of communication system in Incorporate network, has saved the communication resource.When So, it implements any of the products of the present invention or method must be not necessarily required to reach all the above advantage simultaneously.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.
Fig. 1 is the schematic diagram that earth surface is divided into multiple ground subregions of the embodiment of the present invention；
Fig. 2 is that respectively multiple ground subregions of the embodiment of the present invention indicate the schematic diagram of mark；
Fig. 3 be the embodiment of the present invention satellite transit track there are model trajectory schematic diagrames when drift angle with warp；
Fig. 4 is the model trajectory schematic diagram when satellite transit track of the embodiment of the present invention is overlapped with warp；
Fig. 5 is same rail satellite and the corresponding subregion distribution schematic diagram of the embodiment of the present invention；
Fig. 6 is that the satellite of the embodiment of the present invention converts the schematic diagram of change satellite address after the subregion of ground；
Fig. 7 is the stream that the method that the Incorporate network medium and low earth orbit satellites of the embodiment of the present invention communicate is applied to satellite side Journey schematic diagram；
Fig. 8 is the registration process schematic diagram of the user terminal of the embodiment of the present invention；
Communication scheme when Fig. 9 is that repeater satellite is not present in the target terminal of the embodiment of the present invention, between user terminal；
Communication scheme when Figure 10 is that the target terminal of the embodiment of the present invention has repeater satellite, between user terminal；
Figure 11 is that the method that the Incorporate network medium and low earth orbit satellites of the embodiment of the present invention communicate is applied to user terminal The flow diagram of side；
The schematic diagram that Figure 12 is communicated between the user terminal of the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
In the mobile management of LEO satellite (hereafter referred to collectively as satellite) networking, the mobile IP that ground network uses is used for reference And its improvement project is not optimal selection, in order to save the communication resource in Incorporate network, the embodiment of the present invention Provide a kind of method of Incorporate network medium and low earth orbit satellites communication.
Firstly, to divide ground in the method for the Incorporate network medium and low earth orbit satellites communication of the embodiment of the present invention Subregion and user terminal and satellite are addressed:
Earth surface is divided by the first step according to the quantity of the communication range of MEO/LEO Satellite Constellation Satellite and satellite Multiple ground subregions, and allocation identification is distinguished for multiple ground distributor areas, wherein each ground subregion in all ground subregions Mark is fixed and unique, and MEO/LEO Satellite Constellation is the satellite constellation in Incorporate network.
In the embodiment of the present invention by taking the MEO/LEO Satellite Constellation being made of 48 satellites as an example, 48 satellites are in 6 tracks Upper operating has 8 satellites on every track.In order to reduce the overlapping of overlay area to the greatest extent, 8 satellites is made to be evenly distributed on track On, in order to corresponding with satellite distribution in orbit, the division that earth surface has been carried out eight equal portions according to latitude is (i.e. each to divide Area's dimension span is 45 °).Similarly, it is evenly distributed 6 tracks on longitude, earth surface is also enterprising in longitude accordingly The divisions (every track crossings east, the Western Hemisphere, each subregion longitude span be 30 °) of 12 equal parts is gone, earth surface is drawn Divide referring specifically to shown in Fig. 1.
It to be 48 ground subregions respectively allocation identification, this is identified as after earth surface is divided into 48 ground subregions Arabic numerals, Chinese character, English alphabet or the character or label that arbitrarily meet the embodiment of the present invention.In the embodiment of the present invention, with For Arabic numerals, using the median point of the longitude of each ground subregion and latitude as the center of the ground subregion, then ground The center of subregion and the mapping table of mark are as follows:
Corresponding is respectively the schematic diagram that multiple ground subregions indicate mark, as shown in Figure 2.
Step 2: obtaining the third mark of the third ground subregion where the first user terminal, is identified, determined according to third The terminal partitions address of first user terminal；Obtain the Termination ID address of the first user terminal, wherein the end of the first user terminal The end address ID is fixed and uniquely；According to the terminal partitions address and Termination ID address of the first user terminal, the first user end is determined The address at end.
User terminal is addressed, the address of user terminal includes: terminal partitions address and Termination ID address.Terminal point Regional address is determined according to the mark of the ground subregion where user terminal, is changed in the ground subregion where user terminal When, the terminal partitions address of the user terminal also accordingly changes.The Termination ID address of user terminal is that the user terminal is different from The exclusive address ID of other users terminal, the Termination ID address of any user terminal are fixed and uniquely.
The address (being equivalent to the IP address in cable network) of user terminal is by terminal partitions address and Termination ID address two Part collectively constitutes, i.e. IDU=IDn+MACU, wherein IDU is the address of user terminal, and IDn is terminal partitions address, MACU For Termination ID address.The terminal partitions address of user terminal is the area code of ground subregion locating for the user terminal, user terminal Termination ID address be the user terminal, be different from the exclusive address ID of the other users terminal in addition to itself, any user The Termination ID address of terminal is fixed and uniquely, further, it is possible to which the Termination ID address of user terminal is set as MAC Address (Media Access Control Address, physical address).(refer to user terminal without moving at a distance in user terminal Not across ground subregion) in the case where, the address of the user terminal is to maintain constant.
In embodiments of the present invention, the address of user terminal can continue to use IPv4 (Internet Protocol Version 4, Internet protocol fourth edition) A class address format, terminal partitions address accounts for 8 in 32 bit address, the son being equivalent in IPv4 Network No..Termination ID address is the globally unique mark of user terminal.The range of terminal partitions address is 0-127, wherein IPv4 0 and 127 in address be reserved address, is respectively used to indicate all addresses and test winding.The practical model of terminal partitions address It encloses between 1-126, can indicate 126 subnets, i.e. 126 ground subregions namely 126 satellites.
Step 3: obtaining the first identifier of the first ground subregion, first identifier is incorporated into the address of the first satellite, obtains the One address, the address as the first satellite first satellite in the first ground subregion.
First satellite obtains the first identifier of the first ground subregion, and first identifier is incorporated into the address of the first satellite, is obtained First address；First satellite stores the mapping relations of the first ground subregion and the first address into the mapping table of the first satellite； First satellite obtains and the longitude and latitude current according to the first satellite, determines that current first satellite is in the first ground subregion； First satellite is according to the mapping table of the first satellite, and when determining that the first satellite is in the first ground subregion, the address of the first satellite is First address.
The address of satellite includes: the map sub-region address of satellite.The map sub-region address of satellite is the interface over the ground of satellite, The map sub-region address of satellite is determined according to the mark of the ground subregion where satellite, and the corresponding ground subregion of satellite changes When change, the map sub-region address of satellite also changes accordingly.
In order to correctly find the responsible ground subregion of satellite or a certain satellite for being responsible for a certain ground subregion, need The mapping table between a satellite and ground subregion is maintained, the mapping table Satellite and ground subregion are one-to-one.With by For the MEO/LEO Satellite Constellation of 48 satellites composition, 48 ground subregions can find itself mapping satellite at any time, And do not repeat, 48 satellites can find itself responsible ground subregion at any time, and not repeat.Letter in the mapping table of satellite Breath includes: that the first mapping relations between ground subregion and the address of satellite and the satellite are defended with the low orbit where the satellite Second mapping relations of other satellites in star seat.Wherein, the first mapping relations are used to determine the address of satellite, further It says, the map sub-region address (i.e. the interface over the ground of satellite) of satellite is determined, to ensure the communication over the ground of satellite.Second mapping relations For ensuring the communication of satellite Yu other satellites.
The present invention gives the division methods of ground subregion in implementing, and uses identity and address to satellite and user terminal Isolated form of presentation has effectively determined the address of satellite and the address of user terminal, be subsequent satellites and user terminal it Between communication provide technical support.
Preferably, the acquisition of the first satellite and the longitude and latitude current according to the first satellite, determine at current first satellite In the first ground subregion, comprising:
When satellite orbits, the earth is also carrying out rotation with the angular speed of about 15 °/h (15 degree are per hour), this One characteristic determines that there are the relative motions of North and South direction between satellite and earth surface, between satellite orbit and earth surface There are the relative motion of east-west direction, there are model trajectory when drift angle is as shown in Figure 3 with warp for satellite transit track, wherein R For the radius of the earth, OA is the axis of rotation of the earth, and angle formed by OH and OA is drift angle γ.In order to match ground square partition Case finally makes mapping table reach one-to-one effect, needs to be modified the longitude of satellite.
Had according to the geometrical relationship in Fig. 3:
OO'=R × sin θw
O ' N=OO ' × tan γ
O'M=O'D=R × cos θw
OO'=R × sin θw
It can be derived according to various above:
If satellite is in the Northern Hemisphere,
If satellite is in the Southern Hemisphere,
Wherein, θ 'jFor the longitude of satellite after amendment, θjFor correct before satellite precision,It is ∠ O' for ∠ DO'M, γ ON, θwFor ∠ DOC it is the latitude of satellite before correcting, and the latitude for correcting front and back satellite is constant.
First satellite determines that current first satellite is in the first ground subregion according to modified longitude and latitude.
Pass through the amendment of pair warp and weft degree, it is possible to reduce the influence of the orbit inclination angle of low orbit satellite, the running track of satellite with Model trajectory when warp is overlapped is as shown in figure 4, protosatellite running track (referring to the track CH in Fig. 3) is equivalent in Fig. 4 Track CA.
After obtaining revised satellite longitude and latitude, ground distributor where directly can determining satellite by the longitude and latitude of satellite Area's (or referred to as corresponding ground region of satellite).But since application condition existing for longitude amendment near the two poles of the earth is significant, make It will cause certain two satellite in this way to exist simultaneously in the subregion the case where.Now using passing through half track The partitioning scenario of two satellites of low latitudes derives on half track of same in (the Eastern Hemisphere section or the Western Hemisphere section of same track) The partitioning scenario of high latitude satellite.Such as: referring to Fig. 5, No. 2 satellites pair can be obtained according to the coordinate of the 2 of low latitudes, No. 3 satellites Answer No. 1 ground subregion, the corresponding No. 3 ground subregions of No. 3 satellites.By ground subregion longitude and latitude relationship and with the intersatellite position of rail Relationship is set, can be inferred that the corresponding No. 2 ground subregions of No. 1 satellite, the corresponding No. 4 ground subregions of No. 4 satellites.
The mapping table order of accuarcy of the satellite obtained using the calculation method of the embodiment of the present invention is higher, the road between satellite By matching degree it is also preferable.Such as when the frequency for updating mapping table is one second one time, accuracy can achieve 99.652%. But the mapping table of satellite may exist with about 431 seconds mistakes for the period.The reason is that 431 seconds or so are precisely satellite north To the primary period for changing area is carried out, the limitation due to computational accuracy etc. can have the correspondence mistake of very short time in the north. Since this mistake period is relatively more fixed, this mistake can be eliminated using the method for the mapping table for periodically updating satellite.
In embodiments of the present invention, it by correcting the longitude and latitude of satellite, determines the corresponding ground subregion of satellite, guarantees The one-to-one correspondence of satellite and ground subregion, is obtained by calculation the corresponding ground subregion of satellite, takes full advantage of satellite motion Regularity and periodicity, effectively saved the limited memory space of satellite, moreover, in the biggish situation of user volume, meter Calculate caused time delay compared to generation of tabling look-up when postpone a meeting or conference and more shorten, it is more advantageous.
In embodiments of the present invention, user terminal addressing is continued to use in the map sub-region address (interface over the ground of satellite) of satellite (such as address IPv4), (satellite is by the ground where itself longitude and latitude for the longitude and latitude for calculating itself of satellite periodically Subregion is as itself corresponding ground subregion).Because satellite is constantly being moved relative to earth surface, when the longitude and latitude of satellite When ground subregion where degree changes, starting switching.The mapping table that satellite maintains is searched when switching, finds corresponding ground point The information in area is modified the address of its interface over the ground, can be changed referring to Fig. 6 when satellite S1 moves to another ground subregion The address of itself,So as to support the correspondence with foreign country of user terminal in the ground subregion.
Then, it needs to set the method for satellite communication in embodiments of the present invention, is the present invention referring to Fig. 7, Fig. 7 The method of the Incorporate network medium and low earth orbit satellites communication of embodiment, applied to the flow diagram of satellite side, this method packet It includes:
Step 701, the first satellite obtains the mark of all ground subregions pre-established, wherein all ground subregions Mark includes: the first identifier of the first ground subregion and the second identifier of the second ground subregion, and the first satellite is Incorporate Any satellite in network, the first ground subregion and the second ground distributor area are respectively in all ground subregions pre-established Any one ground subregion, the second ground subregion are different from the first ground subregion.
Preferably, after the mark for all ground subregions that the acquisition of the first satellite pre-establishes, this method further include: according to The mark of all ground subregions, the first satellite determine the mapping table of the first satellite.First satellite obtains the where the first satellite The first identifier of one ground subregion, according to first identifier, the address for addressing the first satellite is the first address.By determining that first defends Ground subregion where star addresses the address of the first satellite, realizes the addressing mode that the first satellite identity is separated with position.
Step 702, the first satellite moves to the second ground subregion by the first ground subregion, according to the mark of all ground subregions Know, the address of the first satellite in the first ground subregion by having the first address of first identifier, being changed in the second With the second address of second identifier in the subregion of face.
When the first satellite is in the first ground subregion, the first satellite is determined according to the first identifier of the first ground subregion The address of first satellite is the first address.First satellite during the motion, periodically calculates the ground subregion where itself. When the first satellite moves to the second ground subregion by the first ground subregion, the first satellite is according to the second of the second ground subregion the mark Know, by the address of the first satellite by the first address change be the second address.
Step 703, the first satellite is to the second ground subregion broadcasting satellite packet, so as to receive the first of satellite information packet User terminal maintains the local information table of the first user terminal according to satellite information packet, wherein the packet in satellite information packet It includes: the address of the first satellite.
The periodic broadcasting satellite packet of the second ground subregion where from first satellite to the first satellite.First satellite is wide The period for broadcasting satellite information packet is any time period for meeting the embodiment of the present invention, can voluntarily be set according to practical communication situation It is fixed.First user terminal receives and according to satellite information packet, safeguards the local information table of the first user terminal.In local information table The information of storage includes: the address of satellite.First user terminal is user terminal in the second ground subregion or for the second User terminal in the adjacent ground subregion of face subregion.
Step 704, the first satellite obtains simultaneously basis, by the first user terminal according to the local information table of the first user terminal The local communication packet of transmission, establishes the communication connection of the first user terminal and target terminal, wherein the information in local communication packet It include: the communication data of the address of the first user terminal, the address of target terminal and the first user terminal, target terminal is and the One user terminal establishes the communication target of communication connection.
First user terminal sends local communication packet according to itself local information table, to the first satellite.First satellite connects The local communication packet sent by the first user terminal is received, and the first user terminal and target terminal are established according to the local communication packet Communication connection.
P-MIP agreement in the prior art does not support the paging policy of localization, and with the movement of LEO satellite, user can be away from It is more and more remoter from registration satellite, longer forwarding chain is generated, excessive signalling loads can be generated while causing delay, it is uncomfortable Conjunction is applied to location management algorithm.And Cellular IP is not provided with paging zone, no matter this adopt satellite area size will With paging is regularly sent come update message, the energy of a large amount of wireless network resource and user terminal can be consumed in satellite network Amount, the performance for the paging that can be reduced.In embodiments of the present invention, the address of satellite is thought corresponding with itself corresponding ground subregion, User terminal in satellite ground subregion corresponding with itself is communicated, and the paging policy of localization is supported, relative to P-MIP Agreement shortens forwarding chain, reduces delay and signalling loads.Satellite is to itself corresponding ground subregion broadcasting satellite information Packet is provided with paging zone relative to Cellular IP, reduces the consumption of the energy of wireless network resource and user terminal.Always It, the method for the Incorporate network medium and low earth orbit satellites communication of the embodiment of the present invention reduces in Incorporate network and leads to The wasting of resources of letter system, has saved the communication resource.
Preferably, in the first satellite to the second ground subregion broadcasting satellite packet, so as to receive the of satellite information packet After one user terminal maintains the local information table of the first user terminal according to satellite information packet, this method further include:
Step 1, the registration packet that the first satellite reception is sent by second user terminal, wherein second user terminal is the world The user terminal in the second ground subregion in integrated network, or in the ground subregion adjacent with the second ground district location User terminal, registration packet is that second user terminal is sent according to satellite information packet, and the information in registration packet includes: the second use The address of family terminal and repeater satellite mark.
Second user terminal can be the first user terminal, may not be.Second user terminal is received by the first satellite The satellite information packet of broadcast maintains the local information table of second user terminal according to satellite information packet.Second user terminal according to The local information table of second user terminal determines to the first satellite and sends registration packet.Second user terminal is sent to the first satellite Registration packet.The registration packet that first satellite reception is sent by second user terminal.
Step 2, the first satellite judge the ground subregion and second where the first satellite according to the second address and registration packet Whether the ground subregion where user terminal is identical.
Step 3, when the ground subregion where the first satellite is identical as the ground subregion where second user terminal, the One satellite determines that the first satellite is the registration satellite of second user terminal, and the first satellite maintains the first satellite according to registration packet Registration table.
In the registration table of the first satellite, when information not comprising second user terminal, the first satellite is by second user end The information at end is added to the registration table of the first satellite.In the registration table of the first satellite, when information comprising second user terminal, First satellite updates the registration table of the first satellite according to registration packet, and the content of update includes: the first satellite reception to registration packet Timestamp.
Step 4, when the ground subregion where the first satellite and the ground subregion where second user terminal be not identical, First satellite determines that the first satellite is the repeater satellite of second user terminal, and the first satellite revises repeater satellite mark, label the One satellite is the repeater satellite of second user terminal, obtains revision packet.
In actual conditions, ground subregion and satellite service area are not exactly the same, and satellite projects ground has overlapping, and defends Astrology also results in the movement on ground the change of its own service area, therefore there may be errors for the program.Referring to figure 8, user terminal 1 is in ground subregion 1, but user terminal 1 can not directly with the registration satellite of itself (satellite 1, and 804) one 802 corresponding ground subregion 1 of satellite is communicated, but user terminal 1 can directly with Satellite 2 803 (2 803 corresponding ground subregion 2 805 of satellite) is communicated.User terminal 1 is by satellite 2 803, indirectly It is registered on satellite 1.
Optionally, when the first satellite determines that the first satellite is the repeater satellite of second user terminal, the first satellite will be registered Information in packet is written in the registration table of the first satellite, and the first satellite of label is second user in the registration table of the first satellite The repeater satellite of terminal.When repeater satellite of first satellite as second user terminal, the information of second user terminal is written In the registration table of first satellite, facilitate subsequent first satellite according to the registration table of the first satellite, sends number to second user terminal According to.
Step 5, the first satellite are determined and are sent to the second satellite according to the address of the second user terminal in registration packet Revision packet maintains the registration table of the second satellite, wherein the ground distributor where the second satellite so that the second satellite is wrapped according to revision Area is identical as the ground subregion where second user terminal.
In the registration table of the second satellite, when information not comprising second user terminal, the second satellite is by second user end The information at end is added to the registration table of the second satellite.In the registration table of the second satellite, when information comprising second user terminal, Second satellite updates the registration table of the second satellite according to registration packet, and the content of update includes: the second satellite reception to registration packet The repeater satellite information of timestamp and second user terminal.
In embodiments of the present invention, satellite updates the registration table of itself according to the registration packet sent by user terminal, provides The maintenance method of satellite registration table sends data to user terminal for satellite and provides foundation, effectively supports subsequent satellites Data are sent to user terminal according to the registration table of itself.
Preferably, the first satellite obtains simultaneously basis, by the first user terminal according to the local information table of the first user terminal The local communication packet of transmission, establishes the communication connection of the first user terminal and target terminal, comprising:
Step 1, the first satellite are obtained, are sent by the first user terminal according to the local information table of the first user terminal Local communication packet.
First user terminal determines according to the local information table of the first user terminal and sends local communication to the first satellite Packet.First satellite obtains the local communication packet sent by the first user terminal.
Step 2, according to the address of target terminal in local communication packet, the first satellite sends local communication to third satellite Packet, so that third satellite sends local communication packet to target terminal, wherein ground subregion and target terminal where third satellite The ground subregion at place is identical.
First satellite determines according to the address of target terminal in local communication packet and sends local communication to third satellite Packet.By the routing procedure of inter-satellite link, which is sent to third satellite.Third satellite reception is sent out by the first satellite The local communication packet sent judges whether target terminal has repeater satellite according to the registration table of third satellite.Do not have in target terminal When repeater satellite, third satellite sends local communication packet to target terminal.When target terminal has repeater satellite, third satellite to The repeater satellite of target terminal sends local communication packet, so that the repeater satellite of target terminal receives the local communication packet, and to Target terminal sends the local communication packet.
Step 3, the first satellite reception, the non-native communication packet sent by target terminal according to local communication packet, In, the information in non-native communication packet includes: the communication of the address of the first user terminal, the address of target terminal and target terminal Data.
Non-native communication packet is sent to by target terminal according to local communication packet and the local information table of target terminal Four satellites are simultaneously sent to the first satellite by the routing of inter-satellite link effect, and the address of the 4th satellite and the local of target terminal are believed The address of the satellite recorded in breath table is identical.
Target terminal receives local communication packet, and target terminal determines the content of non-native communication packet according to local communication packet, Target terminal determines according to the local information table of target terminal and sends non-native communication packet to the 4th satellite.4th satellite connects It receives and non-native communication packet is sent by target terminal, the 4th satellite sends the non-native communication packet to the first satellite.Pass through chain between star The routing on road acts on, and non-native communication coating is sent to the first satellite.The first satellite reception non-native communication packet.
Step 4, the first satellite send non-native communication packet to the first user terminal, establish the first user terminal and target The communication connection of terminal.
It is non-local to send this to the first user terminal according to the registration table of non-native communication packet and the first satellite for first satellite Communication bag.First user terminal receives the non-native communication packet sent by the first satellite.First satellite establishes the first user end The communication connection at end and target terminal.
It is logical between user terminal when repeater satellite is not present referring to the target terminal that Fig. 9, Fig. 9 are the embodiment of the present invention Believe schematic diagram.First user terminal 901 determines according to itself local information table and simultaneously sends local communication to the first satellite 903 Packet, the first satellite 903 obtain the local communication packet sent by the first user terminal 901.First satellite 903 is according to local communication packet The address of middle target terminal determines and sends local communication packet to the second satellite 904.It, should by the routing procedure of inter-satellite link Local communication packet is sent to the second satellite 904.Second satellite 904 receives local communication packet, does not relay and defends in target terminal 902 When star, the second satellite 904 sends local communication packet to target terminal 902.
It is logical between user terminal when there is repeater satellite referring to the target terminal that Figure 10, Figure 10 are the embodiment of the present invention Believe schematic diagram.First user terminal 901 determines according to itself local information table and simultaneously sends local communication to the first satellite 903 Packet, the first satellite 903 obtain the local communication packet sent by the first user terminal 901.First satellite 903 is according to local communication packet The address of middle target terminal determines and sends local communication packet to the second satellite 904.It, should by the routing procedure of inter-satellite link Local communication packet is sent to the second satellite 904.Second satellite 904 receives local communication packet, has repeater satellite in target terminal When 1005, the second satellite 904 sends local communication packet to the repeater satellite 1005 of target terminal 902, so that target terminal 902 Repeater satellite 1005 receives the local communication packet.The repeater satellite 1005 of target terminal 902 is whole according to target in local communication packet The address at end 902 sends local communication packet to target terminal 902.
In embodiments of the present invention, give in Incorporate network, satellite and user terminal establish communication connection and User terminal transmits the concrete mode of data by satellite and another user terminal.The paging policy for supporting localization, shortens Chain is forwarded, reduces delay and signalling loads, reduces the wasting of resources of communication system in Incorporate network, has been saved logical Believe resource.
In addition, fault tolerant mechanism is additionally provided in the embodiment of the present invention, in the first satellite reception, by target terminal according to local After the non-native communication packet that communication bag is sent, this method further include:
The first step, in the first satellite reception, the non-native communication packet sent by target terminal according to local communication packet, and When ground subregion where first satellite changes, the first satellite determines the neighbouring satellite of the first satellite, wherein the first satellite Neighbouring satellite be the satellite that can directly be communicated with the first satellite in Incorporate network.
Second step, the first satellite sends non-native communication packet to the neighbouring satellite of the first satellite, so that the neighbour of the first satellite Nearly satellite sends non-native communication packet to the first user terminal.
Due to satellite projects ground exist it is overlapping, ground subregion may with satellite service area can not equity treat, and deposit In satellite in moving process across multiple ground subregions the case where, therefore the program may have error.In data packet In routing procedure, if the switching of satellite has occurred simultaneously, i.e., satellite no longer serves original place due to movement after received data packet Face subregion.For this special case, corresponding fault tolerant mechanism is proposed in the embodiment of the present invention.
It is managed in view of the stability of relative position and every satellite between the periodicity and regularity, satellite of satellite motion Inter-satellite link finiteness (every satellite is connected with four satellites in its direction of motion all around), when the first satellite It receives when not finding relative users terminal (the first user terminal) in its administrative area after data packet, the first satellite determines between star The satellite (satellite directly communicated with the first satellite) being directly connected with the first satellite in link, neighbouring for itself are defended Star.First satellite sends the data packet to the neighbouring satellite of itself, so that four neighbouring satellites are routed, finally navigates to phase User terminal is answered, and sends the data packet to relative users terminal.
Through the embodiment of the present invention, fault tolerant mechanism is devised, ensure that the satellite institute while routing procedure of data packet Ground subregion switch when, the communication between user terminal is still reachable.
Secondly, needing to set the method for user terminal communication in embodiments of the present invention, referring to Figure 11, Tu11Wei The method of the Incorporate network medium and low earth orbit satellites communication of the embodiment of the present invention is applied to the flow diagram of subscriber terminal side, This method comprises:
Step 1101, the first user terminal obtains the mark of all ground subregions pre-established, the first user terminal root It is identified according to the third of third ground subregion, when determining that the first user terminal is in third ground subregion, the ground of the first user terminal Location, wherein the first user terminal is the user terminal in the subregion of third ground, and the marks of all ground subregions includes: third The third of face subregion identifies, and third ground subregion is the second ground subregion or third ground subregion is that the second ground subregion is adjacent A ground subregion, the second ground subregion is any one ground subregion in addition to the first ground subregion, and the first ground subregion is Any one ground subregion.
First user terminal obtains the third mark of the third ground subregion where the first user terminal, the first user terminal It is identified according to third, determines the terminal partitions address of the first user terminal.First user terminal obtains the end of the first user terminal The address ID is held to determine the first use according to the terminal partitions address of the first user terminal and the Termination ID address of the first user terminal The address of family terminal.When the ground subregion where the first user terminal changes, the terminal partitions of the first user terminal Location also accordingly changes.But the Termination ID address of the first user terminal remains constant.The Termination ID of first user terminal Location is to be set in advance, and the Termination ID address of any one user terminal is fixed and uniquely.
Step 1102, the first user terminal receives, from the first satellite to the satellite information packet of the second ground sectorization broadcast, the One user terminal maintains the local information table of the first user terminal according to satellite information packet, wherein the first satellite is by the first Face subregion moves to the satellite of the second ground subregion, and the address of the first satellite in the first ground subregion by having the first mark The first address known, the letter being changed in interior the second address with second identifier of the second ground subregion, satellite information packet Breath includes: the address of the first satellite, and first identifier is the mark of the first ground subregion, and second identifier is the mark of the second ground subregion Know.
First satellite moves to the second ground subregion from the first ground subregion, correspondingly, the address of the first satellite is by basis The first address change that first identifier determines is the second address determined according to second identifier.First satellite periodically to first The second ground subregion broadcasting satellite packet where satellite.First user terminal receives the satellite information by the first satellite broadcasting Packet, the first user terminal maintain the local information table of the first user terminal according to satellite information packet.The local of first user terminal The information stored in information table includes: the address of satellite.Third ground subregion where first user terminal is the second ground subregion, Or first third ground subregion where user terminal be the ground subregion adjacent with the second ground subregion.First user terminal according to Satellite information packet maintains the local information table of the first user terminal, comprising: the first user terminal is according to first in satellite information packet The address of satellite, with the local information table of new first user terminal.
Step 1103, the first user terminal is sent local according to the local information table of the first user terminal to the first satellite Communication bag, so that the first user terminal establishes the communication connection with target terminal by the first satellite, wherein in local communication packet Information include: the address of the first user terminal, the address of target terminal and the first user terminal communication data.
First user terminal determines and according to the address of the first satellite in the local information table of the first user terminal to first Satellite sends local communication packet.The local communication packet that first satellite reception is sent by the first user terminal, according to the communication bag, One satellite establishes the communication connection of the first user terminal and target terminal.
In embodiments of the present invention, user terminal is communicated with the registration satellite or repeater satellite with itself, supports this The paging policy on ground shortens forwarding chain, reduces delay and signalling loads.The Incorporate network of the embodiment of the present invention The method of medium and low earth orbit satellites communication, reduces the wasting of resources of communication system in Incorporate network, has saved the communication resource.
Preferably, according to satellite information packet, the first user terminal maintains the first user terminal according to satellite information packet Local information table, comprising:
Step 1, the address of the satellite stored in the local information table of the first user terminal, in satellite information packet The first satellite address it is identical when, the first user terminal keeps listening state to wait next satellite information packet.
Step 2, the address of the satellite stored in the local information table of the first user terminal, in satellite information packet The first satellite address difference when, the first user terminal is by the satellite stored in the local information table of the first user terminal Address, is updated to the address of the first satellite, and the first user terminal sends registration packet to the first satellite, wherein the letter in registration packet Breath includes: address and the repeater satellite mark of the first user terminal.
The address of the satellite stored in the local information table of the first user terminal is defended with first in satellite information packet When the address difference of star, the first user terminal updates the local information table of the first user terminal.First user terminal updates first The local information table of user terminal, the satellite that will be stored in the local information table of the first user terminal including the first user terminal Address, be changed to the address of the first satellite.First user terminal sends registration packet to the first satellite.So as to be in the first satellite When the registration satellite of the first user terminal, the first satellite updates the registration table of the first satellite according to registration packet；Or in the first satellite For the first user terminal repeater satellite when, the first satellite modification registration packet obtain revision packet, the first satellite to the first user end The registration satellite at end sends revision packet, so that the registration satellite of the first user terminal is wrapped according to revision, updates the first user terminal Registration satellite registration table.Wherein, user terminal registers satellite as the ground subregion at place, where the user terminal The identical satellite of ground subregion, the repeater satellite of user terminal are the registration packet for directly receiving user terminal transmission, and corresponding The ground subregion satellite different from the ground subregion where the user terminal.
Correspondingly, user terminal sends registration packet using such mode, it is changed in the ground subregion where the first satellite When the 4th ground subregion, the first satellite is according to the mapping table of the first satellite, and from the 5th satellite, (the 5th satellite is the change of ground subregion Before, the satellite in the 4th ground subregion) at download registration table.4th ground subregion is any one ground subregion.Or
When the corresponding ground subregion of the first satellite is changed to the 4th ground subregion, within a preset time, the first satellite exists Sign-on ID is added into the satellite information packet of the 4th ground sectorization broadcast, so as to stand after user terminal receives sign-on ID Initiate registration.Wherein, preset time is that any one meets the period of the embodiment of the present invention, and preset time can be according to for the first time Registration Delay setting, Registration Delay is that user terminal for the first time will be required on the information registering of itself to the registration satellite of itself for the first time Time.
In embodiments of the present invention, the specific method that user terminal updates own local information table is given, is subsequent use Family terminal sends data to satellite according to the local information table of itself, provides technical support.Meanwhile user terminal according to The local information table of itself, selectively sends registration packet, reduces the frequency of registration of user terminal, reduces wireless network money The consumption of the energy of source and user terminal.The method of the Incorporate network medium and low earth orbit satellites communication of the embodiment of the present invention, subtracts The wasting of resources for having lacked communication system in Incorporate network, has saved the communication resource.
Preferably, according to satellite information packet, the first user terminal maintains the first user terminal according to satellite information packet Local information table, further includes:
Step 1, the address of the satellite stored in the local information table of the first user terminal, in satellite information packet The first satellite address it is identical when, the first user terminal to the first satellite send registration packet.
Step 2, the address of the satellite stored in the local information table of the first user terminal, in satellite information packet The first satellite address difference when, the first user terminal is by the satellite stored in the local information table of the first user terminal Address, is updated to the address of the first satellite, and the first user terminal sends registration packet to the first satellite, wherein the letter in registration packet Breath includes: address and the repeater satellite mark of the first user terminal.
Correspondingly, user terminal sends registration packet using such mode, it is changed in the ground subregion where the first satellite When the 4th ground subregion, the first satellite only needs periodic broadcasting satellite packet.
In embodiments of the present invention, in embodiments of the present invention, it gives user terminal and updates own local information table Specific method sends data to satellite according to the local information table of itself for subsequent user terminal, provides technical support. Meanwhile as soon as the every reception satellite information packet of user terminal, sends a registration packet, it is ensured that it is user in the registration table of satellite The up-to-date information of terminal, satellite only need the periodic broadcasting satellite packet of the ground subregion where itself, reduce wireless The consumption of the energy of Internet resources and satellite.The method of the Incorporate network medium and low earth orbit satellites communication of the embodiment of the present invention, The wasting of resources for reducing communication system in Incorporate network, has saved the communication resource.
Preferably, in the method for the embodiment of the present invention, first is maintained to use according to satellite information packet in the first user terminal Before the local information table of family terminal, this method further include:
Step 1, when not including information in the local information table of the first user terminal, in default time slot, when the first use When family terminal receives only the satellite information packet of registration satellite broadcasting of the first user terminal, the first user terminal is kept to first The registration satellite of user terminal sends registration packet, wherein default time slot is set according to Registration Delay for the first time, when registering for the first time Prolong as the first user terminal for the first time by time required on the information registering of itself to the registration satellite of itself, the first user terminal Register satellite as the ground subregion at place, satellite identical with the ground subregion where the first user terminal.
Step 2, in default time slot, when the first user terminal receives only the repeater satellite broadcast of the first user terminal Satellite information packet when, the first user terminal often receives a satellite information packet, the satellite just as broadcasting the satellite information packet Send a registration packet, the registration packet that the repeater satellite of the first user terminal sends for directly the first user terminal of reception, and institute The ground subregion satellite different from the ground subregion where the first user terminal.
Step 3, in default time slot, when the first user terminal had both received the registration satellite broadcasting of the first user terminal Satellite information packet, and receive the first user terminal repeater satellite broadcast satellite information packet when, the first user terminal protect It holds to the registration satellite of the first user terminal and sends registration packet.
As user terminal starting up, the information not maintained according to satellite information packet in local information table, therefore User terminal is it needs to be determined that send registration packet to which satellite.If the first user terminal receives only certainly in default time slot Body registers the satellite information packet of satellite broadcasting, then the first user terminal keeps sending registration packet to the registration satellite of itself；If In default time slot, the first user terminal had not only received the satellite information packet of itself registration satellite broadcasting, but also received itself relaying The satellite information packet of satellite broadcasting, then the first user terminal keeps sending registration packet to the registration satellite of itself；If when default In gap, the first user terminal receives only the satellite information packet of itself repeater satellite broadcast, then the first user terminal often receives As soon as satellite information packet, the first user terminal sends a registration packet to the satellite for broadcasting the satellite information packet.According to registration Packet, satellite maintain the registration table of satellite.Wherein, default time slot is any time period for meeting the embodiment of the present invention, presets time slot It is set according to Registration Delay for the first time, Registration Delay is that registration of the user terminal for the first time by the information registering of itself to itself is defended for the first time Time needed on star.
In embodiments of the present invention, when giving in the local information table of user terminal not comprising satellite information, user is whole The method that end sends registration packet.When solving user terminal booting or local information express the meaning outer loss when, the registration of user terminal Method has widened the scope of application of the embodiment of the present invention.
Preferably, in the method that the Incorporate network medium and low earth orbit satellites of the embodiment of the present invention communicate, satellite is maintained Satellite registration table, comprising:
Step 1, the 6th satellite obtain registration packet, wherein ground subregion and the first user terminal institute where the 6th satellite Ground subregion it is identical.
In the first user terminal and when repeater satellite, the 6th satellite (the 6th satellite is the first satellite at this time) directly reception by The registration packet that first user terminal is sent；Having repeater satellite in the first user terminal, (repeater satellite of the first user terminal is the One satellite) when, the 6th satellite reception, revised registration packet (the first satellite sent by the repeater satellite of the first user terminal The registration packet sent by the first user terminal is received, first the first satellite of satellite markers is that the repeater satellite of the first user terminal arrives Repeater satellite mark in registration packet, obtains revised registration packet, and the first satellite sends revised registration to the 6th satellite Packet).
Step 2, when repeater satellite mark the first user terminal of display of registration packet does not have repeater satellite, the 6th satellite Inquire in the registration table of itself whether include the first user terminal information: if not including, the 6th satellite according to registration packet, The information of the first user terminal is written in registration table.If comprising the 6th satellite updates the first user terminal according to registration packet Information.
Wherein, then for the 6th satellite according to registration packet, the information for updating the first user terminal includes: to update the 6th satellite reception By the timestamp for the registration packet that the first user terminal is sent.
Step 3, when the repeater satellite field of registration packet shows that the first user terminal has repeater satellite, the 6th satellite is looked into Ask in the registration table of itself whether include the first user terminal information: if not including, the 6th satellite is being infused according to registration packet The information of the first user terminal is written in volume table.If comprising the 6th satellite inquires the registration table of the 6th satellite, in the 6th satellite Registration table in, when repeater satellite information comprising the first satellite, the 6th satellite updates the registration of the 6th satellite according to registration packet Table (when the repeater satellite of the first user terminal is not or not first satellite in the registration table of the 6th satellite, the 6th satellite update first The repeater satellite of user terminal is the first satellite, the registration that the 6th satellite reception of the 6th satellite update is sent by the first user terminal The timestamp of packet.When the repeater satellite of the first user terminal is the first satellite in the registration table of the 6th satellite, the 6th satellite is more The timestamp for the registration packet that new 6th satellite reception is sent by the first user terminal.)；In the registration table of the 6th satellite, do not wrap When repeater satellite information containing the first satellite, if time interval that this receives registration packet and last time receives between registration packet is greater than The time cycle of 6th satellite broadcasting satellite information packet, the registration table of the 6th satellite of the 6th satellite update (registering by the 6th satellite The repeater satellite that the first user terminal is written in table is the first satellite, updates what the 6th satellite reception was sent by the first user terminal The timestamp of registration packet.).
In embodiments of the present invention, the specific method that satellite maintains itself registration table is given, effectively supports satellite to certainly The maintenance of body registration table.
Preferably, in the method for the embodiment of the present invention, the first user terminal is according to the local information of the first user terminal Table sends local communication packet to the first satellite, so that the first user terminal establishes the communication with target terminal by the first satellite Connection, comprising:
Step 1, the first user terminal are determined and are sent to the first satellite according to the local information table of the first user terminal Local communication packet, so that the first satellite sends local communication packet to third satellite, so that third satellite sends this to target terminal Ground communication bag, wherein the ground subregion where third satellite is identical as the ground subregion where target terminal, i.e. third satellite is The registration satellite of target terminal.
First user terminal inquires the local information table of itself, determines to the first satellite and sends local communication packet.First uses Family terminal sends local communication packet to the first satellite according to the address of the first satellite in local information table.First satellite reception should Local communication packet sends local communication packet to the registration satellite (third satellite) of target terminal according to the address of target terminal.This Ground communication bag passes through inter-satellite link, reaches third satellite.Third satellite reception local communication packet, according to the registration of third satellite Table, judges whether target terminal has repeater satellite.When target terminal does not have repeater satellite, third satellite is sent to target terminal Local communication packet.When target terminal has repeater satellite, third satellite sends local communication packet to the repeater satellite of target terminal, So that the repeater satellite of target terminal sends local communication packet to target terminal.
Step 2, the first user terminal receive the non-native communication packet sent by the first satellite, establish with target terminal logical Letter connection, wherein the information in non-native communication packet includes: the address of target terminal, the address of the first user terminal and target The communication data of terminal, non-native communication packet, by target terminal according to local communication packet and the local information table of target terminal, hair It gives the 4th satellite and the first satellite is sent to by the routing of inter-satellite link effect, the address of the 4th satellite and target terminal The address of the satellite recorded in local information table is identical.
After target terminal receives local communication packet, non-native communication packet is sent to the 4th satellite according to the local communication packet. 4th satellite obtains non-native communication packet, sends the non-native communication packet to the first satellite.Non-native communication packet passes through chain between star The routing on road acts on, and reaches the first satellite.The first satellite reception non-native communication packet.First satellite is according to non-native communication packet In the first user terminal address, to the first user terminal send non-native communication packet.It is non-local that first user terminal receives this Communication bag realizes the communication connection of the first user terminal and target terminal.Wherein, when target terminal has repeater satellite, the Four satellites are the repeater satellite of target terminal；In the non-relay satellite of target terminal, the 4th satellite is third satellite (target terminal Registration satellite).
In embodiments of the present invention, it gives in Incorporate network, user terminal and another user terminal transmit number According to concrete mode.The paging policy for supporting localization, shortens forwarding chain, reduces delay and signalling loads, reduce day The wasting of resources of communication system, has saved the communication resource in ground integrated network.
Referring to Figure 12, Figure 12 is the schematic diagram that is communicated between the user terminal of the embodiment of the present invention.
User terminal 2 1201 belongs to ground subregion 3 1207 on geographical location, meanwhile, it can according to the mapping table of satellite Know, satellite corresponding with ground subregion 3 1207 is satellite 3 1203, but the communication range of satellite 3 1203 does not cover use Family terminal 2 1201.The communication range of satellite 4 1204 covers user terminal 2 1201, meanwhile, it can according to the mapping table of satellite Know, 4 1204 corresponding ground subregion 4 1208 of satellite.User terminal 3 1202 at the far end belongs to ground distributor on geographical location Area 5 1209, meanwhile, according to the mapping table of satellite it is found that satellite corresponding with ground subregion 5 1209 is satellite 5 1205, But the communication range of satellite 5 1205 does not cover user terminal 3 1202.The communication range of satellite 6 1206 covers user terminal 3 1202, meanwhile, according to the mapping table of satellite it is found that 6 1206 corresponding ground subregion 6 1210 of satellite.
Since the registration satellite 3 1203 of user terminal 2 1201 cannot be communicated directly with user terminal 2 1201, use Family terminal 2 1201 must be communicated by trunking scheme.Between user terminal and satellite and user terminal and user terminal it Between the body process that is communicated it is as follows:
Step 1, user terminal 2 1201 receives the satellite information packet broadcasted by satellite 4 1204, according to the satellite information It wraps to satellite 4 1204 and sends registration packet.
Satellite 4 1204 is periodically to itself corresponding 4 1208 broadcasting satellite packet of ground subregion, due to ground distributor Area and satellite service area are not exactly the same, and the user terminal 2 1201 in ground subregion 3 1207 is received by satellite four The satellite information packet of 1204 broadcast.And according to the satellite information packet, user terminal 2 1201 maintains the local information table of itself.With Family terminal 2 1201 sends registration packet according to itself local information table, Xiang Weixing 4 1204.
Step 2, satellite 4 1204 receive registration packet, and satellite 4 1204 determines certainly according to the mapping table of registration packet and itself As the repeater satellite of user terminal 2 1201, satellite 4 1204 modifies the repeater satellite field in registration packet, be dispensed from as The repeater satellite of user terminal 2 1201 obtains revision packet.Satellite 4 1204 determines and according to registration packet or revision packet to satellite 3 1203 send revision packet.
Satellite 4 1204 determines the repeater satellite that itself is user terminal 2 1201, according to registration packet by user terminal two The registration table of itself is written in 1201 information, subsequent to send data to user terminal 2 1201 according to registration table.Or
After satellite 4 1204 determines itself for the repeater satellite of user terminal 2 1201, not with itself new registration table, after (satellite 3 1203 judges that user terminal 2 1201 has repeater satellite according to the registration table of itself for the continuous instruction according to satellite 3 1203 4 1204, satellite 3 1203 sends data to satellite 4 1204, meanwhile, satellite 3 1203 sends to satellite 4 1204 and instructs, with Satellite 4 1204 is set to send the data to user terminal 2 1201), data are sent to user terminal 2 1201.
Step 3 is acted on by the routing of inter-satellite link, and satellite 3 1203 receives revision packet, maintains itself according to revision packet Registration table.
User terminal 3 1202 completes registration by 6 1206 satellite of repeater satellite on satellite 5 1205.
Step 4, when user terminal 2 1201 sends local communication packet to user terminal 3 1202, user terminal two 1201 send local communication packet to satellite 4 1204, so that satellite 4 1204 receives local communication Bao Houxiang satellite 5 1205 and sends The local communication packet.
User terminal 2 1201, which is determined according to the local information table of itself to satellite 4 1204, sends local communication packet, user Terminal 2 1201 sends the local communication packet to satellite 4 1204.Satellite 1024 receives the local sent by user terminal 2 1201 Communication bag is determined and is sent to satellite 5 1205 according to the address of target terminal in local communication packet (user terminal 3 1202) The local communication packet.It is acted on by the routing of inter-satellite link, local communication packet is sent to satellite 5 1205.
Step 5, satellite 5 1205 receive local communication packet, and satellite 5 1205 determines user's end according to the registration table of itself 3 1202 are held there are repeater satellite 6 1206, satellite 5 1205 sends local communication packet to satellite 6 1206.
If user terminal is not registered on the repeater satellite of itself, satellite 5 1205 sends this to satellite 6 1206 While ground communication bag, satellite 5 1205 sends to satellite 6 1206 and instructs, so that satellite 6 1206 is to user terminal 3 1202 Send local communication packet.It is acted on by the routing of inter-satellite link, which is sent to satellite 6 1206.
Step 6, satellite 6 1206 receive local communication packet, and satellite 6 1206 sends the local to user terminal 3 1202 Communication bag.
It is acted on by the routing of inter-satellite link, which is sent to satellite 6 1206.Satellite 6 1206 receives Local communication packet, if user terminal is registered on the repeater satellite of itself, satellite 6 1206 according to itself registration table to User terminal 3 1202 sends the local communication packet；If user terminal is not registered on the repeater satellite of itself, satellite six 1206 receive instruction, send local communication packet to user terminal 3 1202 according to the instruction.User terminal 3 1202 is received by defending The registration packet that star 6 1206 is sent.
The embodiment of the invention provides a kind of systems of Incorporate network medium and low earth orbit satellites communication, are applied to satellite, The system includes:
Identifier acquisition module, for obtaining the mark of all ground subregions pre-established, wherein all ground subregions Mark includes: the first identifier of the first ground subregion and the second identifier of the second ground subregion, and the first satellite is Incorporate Any satellite in network, the first ground subregion and the second ground distributor area are respectively in all ground subregions pre-established Any one ground subregion, the second ground subregion are different from the first ground subregion.
Satellite address switching module, for when the first satellite moves to the second ground subregion by the first ground subregion, root According to the mark of all ground subregions, by the address of the first satellite by having the first ground of first identifier in the first ground subregion Location is changed to second address in the second ground subregion with second identifier.
Satellite information packet broadcast module is used for the second ground subregion broadcasting satellite packet, so as to receive satellite information First user terminal of packet maintains the local information table of the first user terminal according to satellite information packet, wherein in satellite information packet Information include: the first satellite address.
First communication building block, for obtaining simultaneously basis, by the first user terminal according to the local of the first user terminal The local communication packet that information table is sent, establishes the communication connection of the first user terminal and target terminal, wherein in local communication packet Information include: the address of the first user terminal, the address of target terminal and the first user terminal communication data, target terminal For the communication target for establishing communication connection with the first user terminal.
In the system of the embodiment of the present invention, the address of satellite think with itself corresponding ground subregion it is corresponding, satellite and itself User terminal in corresponding ground subregion is communicated, and supports the paging policy of localization, satellite is to itself corresponding ground Sectorization broadcast satellite information packet, reduces the consumption of the energy of wireless network resource and user terminal.In short, the embodiment of the present invention The system of Incorporate network medium and low earth orbit satellites communication reduce the wasting of resources of communication system in Incorporate network, The communication resource is saved.
The system of the embodiment of the present invention is to be using the method that above-mentioned Incorporate network medium and low earth orbit satellites communicate System, then all embodiments of the method for above-mentioned Incorporate network medium and low earth orbit satellites communication are suitable for the system, and equal energy Reach the same or similar beneficial effect.
Correspondingly, due to the system that the Incorporate network medium and low earth orbit satellites of the embodiment of the present invention communicate, applied to defending Star, therefore, the embodiment of the invention also provides a kind of satellites, wherein above-mentioned Incorporate network medium and low earth orbit satellites communication The embodiment of system can also reach identical technical effect suitable for the embodiment of the satellite.
Preferably, in the system of the embodiment of the present invention, identifier acquisition module includes:
Ground distributor zoning molecular modules, for according to the communication range of MEO/LEO Satellite Constellation Satellite and the number of satellite Earth surface is divided into multiple ground subregions, and distinguishes allocation identification for multiple ground distributor areas by amount, wherein all ground distributors The mark fixation of each ground subregion in area and unique, MEO/LEO Satellite Constellation is the Satellite in Incorporate network Seat.
Correspondingly, in the system of the embodiment of the present invention, the system further include:
Satellite address determines submodule, and for obtaining the first identifier of the first ground subregion, first identifier is incorporated into first The address of satellite obtains the first address, the address as the first satellite first satellite in the first ground subregion.
In the embodiment of the system of the embodiment of the present invention, the division methods of ground subregion are provided, satellite address is provided Method of determination, to support the paging policy of localization to provide technical support.
Preferably, in the system of the embodiment of the present invention, satellite address determining module, comprising:
Mapping table generates submodule and addresses each ground subregion institute respectively for the mark according to all ground subregions The mapping relations of the address of ground subregion and the first satellite are stored reflecting to the first satellite by the address of corresponding first satellite In firing table.
Satellite position determines submodule, for obtaining and the longitude and latitude current according to the first satellite, determines at this time the One satellite is in the first ground subregion.
First address determines submodule, for the mapping table according to the first satellite, determines that the first satellite is in the first ground When subregion, the address of the first satellite is the first address.
In embodiments of the present invention, the address that satellite is determined by the longitude and latitude that calculate satellite, takes full advantage of and defends Luck dynamic regularity and periodicity, have effectively saved the limited memory space of satellite, moreover, the situation larger in user volume Under, calculate caused time delay compared to generation of tabling look-up when postpone a meeting or conference and more shorten, it is more advantageous.
Preferably, in the system that the Incorporate network medium and low earth orbit satellites of the embodiment of the present invention communicate, the first address Determine submodule, comprising:
First identifier is incorporated into first and defended by the first address determination unit for obtaining the first identifier of the first ground subregion The address of star obtains the first address.
Mapping storage unit, for storing the mapping relations of the first ground subregion and the first address to the first satellite In mapping table.
Subregion determination unit determines current first satellite for obtaining and the longitude and latitude current according to the first satellite In the first ground subregion；
First address determination unit determines that the first satellite is in the first ground distributor for the mapping table according to the first satellite Qu Shi, the address of the first satellite are the first address.
Preferably, in the system of the embodiment of the present invention, the system further include:
Registration packet receiving module, for receiving the registration packet sent by second user terminal, wherein second user terminal is The user terminal in the second ground subregion in Incorporate network, or the ground distributor adjacent with the second ground district location User terminal in area, registration packet are that second user terminal is sent according to satellite information packet, and information in registration packet includes: the The address of two user terminals and repeater satellite mark.
Ground subregion determination module, for judging the ground subregion where the first satellite according to the second address and registration packet It is whether identical as the ground subregion where second user terminal.
Registration table maintenance module, in the ground subregion where the first satellite and the ground distributor where second user terminal When area is identical, determines that the first satellite is the registration satellite of second user terminal, according to registration packet, maintain the registration of the first satellite Table.
Module is revised, in the not phase of ground subregion and the ground subregion where second user terminal where the first satellite Meanwhile determining that the first satellite is the repeater satellite of second user terminal, revision repeater satellite mark, the first satellite of label is second The repeater satellite of user terminal obtains revision packet.
Packet sending module is revised, for the address according to the second user terminal in registration packet, is determined and to the second satellite Revision packet is sent, so that the second satellite is wrapped according to revision, maintains the registration table of the second satellite, wherein the ground where the second satellite Face subregion is identical as the ground subregion where second user terminal, i.e. the second satellite is your registration satellite of second user terminal.
In embodiments of the present invention, satellite updates the registration table of itself according to the registration packet sent by user terminal, provides The maintenance method of satellite registration table sends data to user terminal for satellite and provides foundation, effectively supports subsequent satellites Data are sent to user terminal according to the registration table of itself.
Preferably, in the system that the Incorporate network medium and low earth orbit satellites of the embodiment of the present invention communicate, the first communication Establish module, comprising:
Local communication packet receiving submodule, for obtaining the local information by the first user terminal according to the first user terminal The local communication packet that table is sent.
The first sending submodule of local communication packet is defended for the address according to target terminal in local communication packet to third Star sends local communication packet, so that third satellite sends local communication packet to target terminal, wherein the ground where third satellite Subregion is identical as the ground subregion where target terminal, i.e., third satellite be target terminal registration satellite.
The first receiving submodule of non-native communication packet, for receive pass through target terminal sent according to local communication packet it is non- Local communication packet, wherein the information in non-native communication packet include: the address of the first user terminal, target terminal address and The communication data of target terminal.
Non-native communication packet sending submodule establishes the first use for sending non-native communication packet to the first user terminal The communication connection of family terminal and target terminal.
In embodiments of the present invention, give in Incorporate network, satellite and user terminal establish communication connection and User terminal transmits the concrete mode of data by satellite and another user terminal.The paging policy for supporting localization, shortens Chain is forwarded, reduces delay and signalling loads, reduces the wasting of resources of communication system in Incorporate network, has been saved logical Believe resource.
Preferably, in the system that the Incorporate network medium and low earth orbit satellites of the embodiment of the present invention communicate, the first communication Establish module, further includes:
Neighbouring satellite determines submodule, for being sent according to local communication packet by target terminal in the first satellite reception While non-native communication packet, if the ground subregion where the first satellite changes, the neighbouring satellite of the first satellite is determined, In, the neighbouring satellite of the first satellite is the satellite that can be directly communicated with the first satellite in Incorporate network.
Second non-native communication packet sending submodule, for sending non-native communication packet to the neighbouring satellite of the first satellite, So that the neighbouring satellite of the first satellite sends non-native communication packet to the first user terminal.
Through the embodiment of the present invention, fault tolerant mechanism is devised, ensure that the satellite institute while routing procedure of data packet Ground subregion switch when, the communication between user terminal is still reachable.
A kind of system of Incorporate network medium and low earth orbit satellites communication, is applied to user terminal, comprising:
Terminal address determining module, for obtaining the mark of all ground subregions pre-established, according to third ground distributor The third in area identifies, when determining that the first user terminal is in third ground subregion, the address of the first user terminal, wherein first User terminal is the user terminal in the subregion of third ground, and the mark of all ground subregions includes: the third of third ground subregion Mark, third ground subregion is the second ground subregion or third ground subregion is an adjacent ground distributor of the second ground subregion Area, the second ground subregion are any one ground subregion in addition to the first ground subregion, and the first ground subregion is any one ground distributor Area.
Satellite information packet receiving module, for receiving from the first satellite to the satellite information packet of the second ground sectorization broadcast, The local information table of the first user terminal is maintained according to satellite information packet, wherein the first satellite is to be moved by the first ground subregion To the satellite of the second ground subregion, and the address of the first satellite by the first ground subregion with the first ground of first identifier Location is changed to second address in the second ground subregion with second identifier, and the information in satellite information packet includes: first The address of satellite, first identifier are the mark of the first ground subregion, and second identifier is the mark of the second ground subregion.
Second communication building block is sent local for the local information table according to the first user terminal to the first satellite Communication bag, so that the first user terminal establishes the communication connection with target terminal by the first satellite, wherein in local communication packet Information include: the address of the first user terminal, the address of target terminal and the first user terminal communication data.
In embodiments of the present invention, user terminal is communicated with the registration satellite or repeater satellite with itself, supports this The paging policy on ground shortens forwarding chain, reduces delay and signalling loads.The Incorporate network of the embodiment of the present invention The system of medium and low earth orbit satellites communication, reduces the wasting of resources of communication system in Incorporate network, has saved the communication resource.
Correspondingly, being applied to use due to the system that the Incorporate network medium and low earth orbit satellites of the embodiment of the present invention communicate Family terminal, therefore, the embodiment of the invention also provides a kind of user terminals, wherein low rail is defended in above-mentioned Incorporate network The embodiment of the system of star communication can also reach identical technical effect suitable for the embodiment of the user terminal.
Preferably, in the system of the embodiment of the present invention, terminal address determining module includes:
Terminal partitions address determines submodule, for obtaining the third mark of the third ground subregion where the first user terminal Know, is identified according to third, determine the terminal partitions address of the first user terminal.
Termination ID address determines submodule, for determining the Termination ID address of the first user terminal, wherein the first user is whole The Termination ID address at end is fixed and uniquely.
User terminal address determines submodule, for according to the terminal partitions address of the first user terminal and Termination ID Location addresses the first user terminal, obtains the address of the first user terminal.
In embodiments of the present invention, the system of determining user terminal addressing is given, user terminal identity and ground are realized The separation of location effectively supports subsequent communication.
Preferably, in the system that the Incorporate network medium and low earth orbit satellites of the embodiment of the present invention communicate, satellite information Packet receiving module, comprising:
Packet acquisition submodule, for receiving from the first satellite to the satellite information packet of the second ground sectorization broadcast.
Local information table first maintains submodule, the satellite for being stored in the local information table of the first user terminal Address, when identical as the address of the first satellite in satellite information packet, listening state is kept to wait next satellite information packet.
Local information table second maintains submodule, the satellite for being stored in the local information table of the first user terminal Address, when address difference with the first satellite in satellite information packet, will be deposited in the local information table of the first user terminal The address of the satellite of storage is updated to the address of the first satellite, sends registration packet to the first satellite, wherein the information in registration packet It include: address and the repeater satellite mark of the first user terminal.
In embodiments of the present invention, the specific method that user terminal updates own local information table is given, is subsequent use Family terminal sends data to satellite according to the local information table of itself, provides technical support.Meanwhile user terminal according to The local information table of itself, selectively sends registration packet, reduces the frequency of registration of user terminal, reduces wireless network money The consumption of the energy of source and user terminal.The system of the Incorporate network medium and low earth orbit satellites communication of the embodiment of the present invention, subtracts The wasting of resources for having lacked communication system in Incorporate network, has saved the communication resource.
Preferably, in the system that the Incorporate network medium and low earth orbit satellites of the embodiment of the present invention communicate, the second communication Establish module, comprising:
The second sending submodule of local communication packet determines simultaneously for terminal according to the local information table of the first user terminal To the first satellite send local communication packet so that the first satellite to third satellite send local communication packet so that third satellite to Target terminal sends local communication packet, wherein the ground subregion where third satellite and the ground subregion phase where target terminal Together, i.e., third satellite be target terminal registration satellite；
The second receiving submodule of non-native communication packet, for receiving the non-native communication packet sent by the first satellite, with mesh It marks terminal and establishes communication connection, wherein the information in non-native communication packet includes: the address of target terminal, the first user terminal Address and target terminal communication data, non-native communication packet, by target terminal according to local communication packet and target terminal Local information table is sent to the 4th satellite and is sent to the first satellite, the ground of the 4th satellite by the routing of inter-satellite link effect The address of satellite recorded in location and the local information table of target terminal is identical.
In embodiments of the present invention, it gives in Incorporate network, user terminal and another user terminal transmit number According to concrete mode.The paging policy for supporting localization, shortens forwarding chain, reduces delay and signalling loads, reduce day The wasting of resources of communication system, has saved the communication resource in ground integrated network.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that There is also other identical elements in process, method, article or equipment including the element.
Each embodiment in this specification is all made of relevant mode and describes, same and similar portion between each embodiment Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system reality For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method Part explanation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention It is interior.

Claims (10)

1. a kind of method of Incorporate network medium and low earth orbit satellites communication, which is characterized in that be applied to satellite, comprising:
First satellite obtains the mark of all ground subregions pre-established, wherein the mark of all ground subregions includes: The second identifier of the first identifier of first ground subregion and the second ground subregion, first satellite are in Incorporate network Any satellite, first ground subregion and second ground distributor area are respectively in all ground subregions pre-established Any one ground subregion, second ground subregion is different from first ground subregion；
First satellite moves to second ground subregion by first ground subregion, according to all ground subregions Mark, the address of first satellite by the first ground subregion with first identifier the first address, be changed to In second address in the second ground subregion with second identifier；
First satellite is to the second ground subregion broadcasting satellite packet, so as to receive the first of the satellite information packet User terminal maintains the local information table of first user terminal according to the satellite information packet, wherein the satellite information Information in packet includes: the address of first satellite；
First satellite obtains and basis, by first user terminal according to the local information table of first user terminal The local communication packet of transmission establishes the communication connection of first user terminal and target terminal, wherein the local communication packet In information include: the logical of the address of first user terminal, the address of the target terminal and first user terminal Letter data, the target terminal are the communication target that communication connection is established with first user terminal.
2. the method according to claim 1, wherein first satellite obtains all ground distributors pre-established The mark in area, comprising:
According to the quantity of the communication range of MEO/LEO Satellite Constellation Satellite and the satellite, earth surface is divided into multiplely Face subregion, and allocation identification is distinguished for the multiple ground distributor area, wherein each ground subregion in all ground subregions Mark fixation and unique, the MEO/LEO Satellite Constellation is the satellite constellation in the Incorporate network；
Obtain the mark of all ground subregions；
Correspondingly, after the mark for all ground subregions that the first satellite acquisition pre-establishes, the method also includes:
The first identifier is incorporated into the address of first satellite, obtained by the first identifier for obtaining first ground subregion First address, as first satellite in the first ground subregion described in the first satellite address.
3. according to the method described in claim 2, it is characterized in that, it is described obtain first ground subregion first identifier, The first identifier is incorporated into the address of first satellite, obtains first address, as first satellite described The address of first satellite described in when the first ground subregion, comprising:
First satellite obtains the first identifier of the first ground subregion, and the first identifier is incorporated into the ground of first satellite Location obtains first address；
The mapping relations of first ground subregion and first address are stored reflecting to the first satellite by first satellite In firing table；
First satellite obtains and the longitude and latitude current according to first satellite, determines at presently described first satellite In first ground subregion；
First satellite determines that first satellite is in first ground subregion according to the mapping table of first satellite When, the address of first satellite is first address.
4. the method according to claim 1, wherein in first satellite to second ground sectorization broadcast Satellite information packet, so that the first user terminal for receiving the satellite information packet maintains described first according to the satellite information packet After the local information table of user terminal, the method also includes:
The registration packet that first satellite reception is sent by second user terminal, wherein the second user terminal is the day The user terminal in the second ground subregion in ground integrated network, or the ground adjacent with second ground district location User terminal in subregion, what the registration packet sent for the second user terminal according to the satellite information packet, the note Information in volume packet includes: address and the repeater satellite mark of the second user terminal；
First satellite according to second address and the registration packet, judge ground subregion where first satellite with Whether the ground subregion where the second user terminal is identical；
When the ground subregion where first satellite is identical as the ground subregion where the second user terminal, described One satellite determines that first satellite is the registration satellite of the second user terminal, and first satellite is according to the registration Packet maintains the registration table of first satellite；
It is described when the ground subregion where first satellite and the ground subregion where the second user terminal be not identical First satellite determines that first satellite is the repeater satellite of the second user terminal, and first satellite revises the relaying Satellite mark, marking first satellite is the repeater satellite of the second user terminal, obtains revision packet；
First satellite is determined and is sent to the second satellite according to the address of the second user terminal in the registration packet The revision packet maintains the registration table of second satellite, wherein described so that second satellite is wrapped according to the revision Ground subregion where second satellite is identical as the ground subregion where the second user terminal.
5. being used the method according to claim 1, wherein first satellite obtains and basis by described first The local communication packet that family terminal is sent according to the local information table of first user terminal, establish first user terminal with The communication connection of the target terminal, comprising:
First satellite obtains, and is sent by first user terminal according to the local information table of first user terminal The local communication packet；
According to the address of target terminal in the local communication packet, first satellite sends the local communication to third satellite Packet, so that the third satellite sends the local communication packet to the target terminal, wherein the ground where the third satellite Face subregion is identical as the ground subregion where the target terminal；
First satellite reception, the non-native communication packet sent by the target terminal according to the local communication packet, In, the information in the non-native communication packet includes: the address of first user terminal, the address of the target terminal and institute State the communication data of target terminal；
First satellite sends the non-native communication packet to first user terminal, establish first user terminal with The communication connection of the target terminal.
6. according to the method described in claim 5, it is characterized in that, in first satellite reception, by the target terminal root After the non-native communication packet sent according to the local communication packet, the method also includes:
In first satellite reception, the non-native communication packet sent by the target terminal according to the local communication packet, and When the ground subregion where first satellite changes, first satellite determines that the neighbouring of first satellite is defended Star, wherein the neighbouring satellite of first satellite be the Incorporate network in, can directly with first satellite into The satellite of row communication；
First satellite sends the non-native communication packet to the neighbouring satellite of first satellite, so that first satellite Neighbouring satellite send the non-native communication packet to first user terminal.
7. a kind of method of Incorporate network medium and low earth orbit satellites communication, which is characterized in that be applied to user terminal, comprising:
First user terminal obtains the mark of all ground subregions pre-established, and first user terminal is according to third ground The third of subregion identifies, when determining that first user terminal is in third ground subregion, the address of first user terminal, Wherein, first user terminal is the user terminal in the subregion of the third ground, the mark packet of all ground subregions Include: the third mark of third ground subregion, third ground subregion are the second ground subregion or the third ground distributor Area is an adjacent ground subregion of second ground subregion, and second ground subregion is appointing in addition to the first ground subregion One ground subregion, first ground subregion are any one ground subregion；
First user terminal receives, from the first satellite to the satellite information packet of second ground sectorization broadcast, described the One user terminal maintains the local information table of first user terminal according to the satellite information packet, wherein described first defends Star is the satellite that the second ground subregion is moved to by the first ground subregion, and the address of first satellite is by being in the first ground Interior the first address with first identifier of subregion is changed to second address in the second ground subregion with second identifier, Information in the satellite information packet includes: the address of first satellite, and the first identifier is first ground subregion Mark, the second identifier be second ground subregion mark；
According to the local information table of first user terminal, the first satellite of Xiang Suoshu sends local logical first user terminal Letter packet, so that first user terminal establishes the communication connection with target terminal by first satellite, wherein described Information in ground communication bag includes: the address of first user terminal, the address of the target terminal and first user The communication data of terminal.
8. the method according to the description of claim 7 is characterized in that first user terminal obtain pre-establish allly The mark of face subregion, comprising:
According to the quantity of the communication range of MEO/LEO Satellite Constellation Satellite and the satellite, earth surface is divided into multiplely Face subregion, and allocation identification is distinguished for the multiple ground distributor area, wherein each ground subregion in all ground subregions Mark fixation and unique, the MEO/LEO Satellite Constellation is the satellite constellation in the Incorporate network；
Obtain the mark of all ground subregions；
Correspondingly, the method is also wrapped after the mark for all ground subregions that the first user terminal acquisition pre-establishes It includes:
The third mark for obtaining the third ground subregion where first user terminal, identifies according to the third, determines institute State the terminal partitions address of the first user terminal；
Obtain the Termination ID address of first user terminal, wherein the Termination ID address of first user terminal fix and Uniquely；
According to the terminal partitions address and Termination ID address of first user terminal, the ground of first user terminal is determined Location.
9. a kind of system of Incorporate network medium and low earth orbit satellites communication, which is characterized in that be applied to satellite, comprising:
Identifier acquisition module, for obtaining the mark of all ground subregions pre-established, wherein all ground subregions Mark includes: the first identifier of the first ground subregion and the second identifier of the second ground subregion, and the first satellite is Incorporate Any satellite in network, first ground subregion and second ground distributor area are respectively all ground pre-established Any one ground subregion in subregion, second ground subregion are different from first ground subregion；
Satellite address switching module, for moving to second ground distributor by first ground subregion in first satellite Qu Shi, according to the mark of all ground subregions, by the address of first satellite by having in the first ground subregion First address of first identifier is changed to second address in the second ground subregion with second identifier；
Satellite information packet broadcast module is used for the second ground subregion broadcasting satellite packet, so as to receive the satellite First user terminal of packet maintains the local information table of first user terminal according to the satellite information packet, wherein Information in the satellite information packet includes: the address of first satellite；
First communication building block, for obtaining simultaneously basis, by first user terminal according to first user terminal The local communication packet that local information table is sent, establishes the communication connection of first user terminal and target terminal, wherein described Information in local communication packet includes: the address of first user terminal, the address of the target terminal and first use The communication data of family terminal, the target terminal are the communication target that communication connection is established with first user terminal.
10. a kind of system of Incorporate network medium and low earth orbit satellites communication, which is characterized in that be applied to user terminal, comprising:
Terminal address determining module, for obtaining the mark of all ground subregions pre-established, according to third ground subregion Third mark, when determining that the first user terminal is in third ground subregion, the address of first user terminal, wherein described First user terminal is the user terminal in the subregion of the third ground, and the mark of all ground subregions includes: described the The third of three ground subregions identifies, and third ground subregion is the second ground subregion or third ground subregion is described An adjacent ground subregion of second ground subregion, second ground subregion are any one ground in addition to the first ground subregion Subregion, first ground subregion are any one ground subregion；
Satellite information packet receiving module, for receiving from the first satellite to the satellite information packet of second ground sectorization broadcast, The local information table of first user terminal is maintained according to the satellite information packet, wherein first satellite is by first Ground subregion moves to the satellite of the second ground subregion, and the address of first satellite in the first ground subregion by having First address of first identifier is changed to second address in the second ground subregion with second identifier, the satellite letter Information in breath packet includes: the address of first satellite, and the first identifier is the mark of first ground subregion, described Second identifier is the mark of second ground subregion；
Second communication building block, for the local information table according to first user terminal, the first satellite of Xiang Suoshu is sent Local communication packet, so that first user terminal establishes the communication connection with target terminal by first satellite, wherein Information in the local communication packet includes: the address of first user terminal, the address of the target terminal and described The communication data of one user terminal.
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