CN108882374A - Ka frequency range multiple access TT&C Resources dispatching method - Google Patents
Ka frequency range multiple access TT&C Resources dispatching method Download PDFInfo
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- CN108882374A CN108882374A CN201810516948.0A CN201810516948A CN108882374A CN 108882374 A CN108882374 A CN 108882374A CN 201810516948 A CN201810516948 A CN 201810516948A CN 108882374 A CN108882374 A CN 108882374A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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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
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18513—Transmission in a satellite or space-based system
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Computer Networks & Wireless Communication (AREA)
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- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Radio Relay Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
A kind of Ka frequency range multiple access TT&C Resources dispatching method proposed by the present invention, it is desirable to provide a kind of to provide classification effective access means for different demands user.The technical scheme is that：The spaceborne Ka resource of frequency range is divided into multi-beam resource, nonoverlapping frequency sub-band resource is further divided into each wave beam, each frequency sub-band is distinguished using different spreading codes, realizes the three-dimensional setting of system resource；There to be the user of access demand to be divided into predistribution broadband, predistribution narrowband according to priority, rate difference, access four seed type of narrowband with chance with chance access band；Then according to user's access request, judge that the whether available free resource of system, nothing are then refused to access, then judgement is predistribution user access or intervenes with meeting, if predistribution access then judges whether broadband access again, it is to carry out broadband access, otherwise carries out predistribution narrow band access；If then judging whether there is idle Beam resources with access is met, have, distribute Beam resources, otherwise refusal access.
Description
Technical field
The present invention relates to Tianhuangping pumped storage plant field relay satellite systems, and one suitable for space-based Ka frequency range multiple access TT&C system
The Ka frequency range multiple access TT&C Resources dispatching method of kind flexibility and reliability.
Background technique
Ka wave band is a part of the microwave band of electromagnetic spectrum, and the frequency range of Ka wave band is 26.5-40GHz.Ka generation
Table the surface of K (K-above), in other words, which is directly higher than K-band.Ka band satellite communication system can be height
Fast satellite communication, gigabit grade broadband digital transmission, high-definition television (HDTV), satellite news gathering (SNG), VSAT industry
Business directly arrive the new business such as family (DTH) business and personal satellite communication and provides one kind brand-new means.The shortcomings that Ka frequency range is rain
It declines larger, to the more demanding of device and technique.Ka wave band is also referred to as 30/20GHz wave band, is commonly used in satellite communication.Ka
It includes ground segment, space segment and user segment that frequency range multiple access TTC & DT Systems (KMA), which are a kind of, passes through Beam resources scheduling, chain
The multifunctional measurement and control communication system based on repeater satellite of the multiple functions such as observing and controlling, number biography is finally realized in the work such as road foundation.
KMA generates multiple controllable Ka wave beams, by more using the Ka frequency range phased array antenna and relevant device that are mounted on repeater satellite
The predistribution of kind user's access accesses, with the multiple access means such as access way and space division multiple access, CDMA, frequency division multiple access of chance, real
The core functions such as observing and controlling, high-speed data relaying and telemetry communication integration, utilize simultaneously while now to multiple target aircrafts
The modes such as wave beam hinge have the function of that aircraft data quickly returns, data interaction etc. extends between aircraft.Existing space-based Ka
TT&C Resources scheduling can only carry out reservation data relay services to only a few target using the method for frequency division multiplexing, and can not be to not
Broadband together, narrow-band user demand are effectively distinguished, under causing resource utilization ratio very low, and current satellite communication
Multi-frequency-time division multiple access (MF-TDMA) technology generally used in system, due to the time synchronization between repeater satellite and user satellite
It is extremely difficult and can not be applicable in.Existing spacebased system (including repeater satellite, telecommunication satellite) multi-access resource dispatching method is difficult
It is applicable in.In order to reduce the complexity of calculating, the prior art proposes the co-allocation algorithm and tradition using step-by-step optimization algorithm
Algorithm of fixed channel assignment.Wherein, distribution subcarrier used based on two-stage optimization, determine each carrier power, two kinds of differences
Allocation algorithm carries out performance comparison.Algorithm of fixed channel assignment is constant using the communication requirement constant total quantity for assuming whole system, does not examine
Consider the actual communication requirement of each user, Q carrier bandwidths are averagely allocated to each user.On the one hand, as less user
When sending information, the resource for distributing to user will waste significantly, and other user cannot carry out its resource using on the other hand
When more user sends information, with the increase of user wave beam number K, the inadequate resource of system frequency efficiency distribution is to meet
User's communication requirement.The two kinds of algorithms comparison of system spectral efficiency and system communication demand under multi-beam satellite model is full
The comparing result of meaning degree β shows that the handling capacity of the increase system with user wave beam number K increases, but the power consumption of system
It is also correspondingly improved with complexity, and increases the complexity of calculating.Space flight measurement and control resource scheduling is band time window
More resource schedulings of constraint, research of the problem on method for solving at present includes the foundation of scheduling model and setting for algorithm
Meter.Therefore when the resource allocation of real system, need to seek between throughput of system and the complexity of calculating an equalization point.
It is a non-convex combined optimization problem since Ka frequency range multi-beam satellite system resource dynamically distributes optimization problem, joint is most
Excellent solution is very unobtainable.Therefore need to design a kind of space-based Ka frequency range multiple access TT&C Resources scheduling skill of new Fast Practical
Art.
Summary of the invention
The characteristics of it is an object of the invention to be directed to space-based Ka frequency range multiple access TTC & DT Systems and application demand propose one
The multiple access TT&C Resources dispatching method of kind flexibility and reliability provides classification effective access means for the user of different demands.
Above-mentioned purpose of the present invention can be reached by the following measures：A kind of Ka frequency range multiple access TT&C Resources dispatching method,
It is characterized by comprising following steps：The spaceborne Ka resource of frequency range is divided into multi-beam resource, is further divided into each wave beam and is not overlapped
Frequency sub-band resource, each frequency sub-band is distinguished using different spreading codes, to realize Ka frequency range multiple access TTC & DT Systems
The three-dimensional setting of resource；Then the user of access demand will is divided into predistribution broadband, predistribution according to priority, rate difference
Narrowband accesses four seed type of narrowband with chance with chance access band；In the scheduling of multiple access TT&C Resources, accessed first according to user
Request, judges the whether available free resource of Ka frequency range multiple access TTC & DT Systems, no, and refusal access, is to judge whether to pre-allocate
User's access is to continue predistribution access, then judge whether broadband access, otherwise carries out predistribution narrow band access；Be then into
Row judges whether there is idle Beam resources, has, is allocated Beam resources, otherwise refusal access；If predistribution cannot access,
Then enter with access is met, judges whether broadband access, it is no, then narrowband is carried out with access is met, and is to judge whether there is idle wave beam
Resource is to be allocated Beam resources, no, then refuses to access.
The present invention has the advantages that compared to existing space-based Ka frequency range TT&C Resources dispatching method：
The spaceborne Ka resource of frequency range is divided into multi-beam resource by the present invention, and nonoverlapping frequency sub-band resource is further divided into each wave beam,
Each frequency sub-band is distinguished using different spreading codes, and the three-dimensional for realizing Ka frequency range multiple access TTC & DT Systems resource is set
It sets, can effectively utilize Ka frequency range multi-beam resource, efficient multiple access service is provided.This use for different demands
Family provides classification effective access means flexibility and reliability.The survey of Ka frequency range multiple access can be preferably dynamically distributed according to the demand of user
Telecommunication system resources are controlled, the fairness and efficiency of Ka frequency range multiple access TTC & DT Systems are improved, are limited in antenna and transponder resource
Under conditions of fixed, Ka frequency range multiple access TTC & DT Systems can satisfy more user demands.It compares with conventional allocation algorithm,
Significantly improve Ka frequency range multiple access TTC & DT Systems resource utilization and user capacity.
The present invention carries out flexible resource adaptation, will be for the multiple access demand of different priorities, different rates
System resource is divided into the subclasses such as wave beam, frequency range and code word, while being divided into according to the User Priority that has access demand, rate difference pre-
It distributes broadband, predistribution narrowband, access four seed type of narrowband with chance with chance access band；From Beam resources, the resource of frequency range and
3 dimensions of code source carry out the division of resource, are accessed using idle Beam resources, for narrow band access according to being pre-
Distribution or the selection that progress frequency range or code word are accessed with chance, realize the efficient utilization of Ka frequency range multiple access TT&C Resources.Emulation knot
Fruit shows that, compared to traditional allocation algorithm, telemetry communication satisfaction, the value of spectrum efficiency of new algorithm all increase, and is
Research after satellite communication system resource allocation provides certain theoretical basis.
The space-based scheduling of resource of present invention Ka frequency range multiple access telemetry communication suitable for relay satellite system.
Detailed description of the invention
The present invention is further described with embodiment with reference to the accompanying drawing.
Fig. 1 is Ka frequency range multiple access TT&C Resources scheduling user's access process figure of the present invention.
Fig. 2 is Ka frequency range multiple access TTC & DT Systems user's narrow band access flow chart.
Fig. 3 is the system resource table of Ka frequency range multiple access TTC & DT Systems.
Specific embodiment
Refering to fig. 1.According to the present invention, a kind of Ka frequency range multiple access TT&C Resources dispatching method, it is characterised in that including as follows
Step：The spaceborne Ka resource of frequency range is divided into multi-beam resource, nonoverlapping frequency sub-band resource, every height are further divided into each wave beam
Frequency range is distinguished using different spreading codes, to realize the three-dimensional setting of Ka frequency range multiple access TTC & DT Systems resource；Then
To have the user of access demand according to priority, rate difference be divided into predistribution broadband, predistribution narrowband, with meet access band with
Four seed type of narrowband is accessed with meeting；In the scheduling of Ka frequency range multiple access TT&C Resources, first according to user's access request, Ka frequency is judged
The section whether available free resource of multiple access TTC & DT Systems, no, refusal access are to judge whether to pre-allocate user's access, are then
Continue predistribution access, then judge whether broadband access, otherwise carries out predistribution narrow band access；It is to carry out judging whether to have time
Not busy Beam resources, have, and are allocated Beam resources, otherwise refusal access；If predistribution cannot access, enters and is accessed with chance,
Judge whether broadband access, it is no, then narrowband is carried out with access is met, and is to judge whether there is idle Beam resources, is to be divided
It is no with Beam resources, then refuse to access.
For narrow band access, then according to being to pre-allocate or access the selection for carrying out frequency range or code word with meeting, provided from wave beam
3 source, the resource of frequency range and code source dimensions carry out the division of resource.
The accessing user of Ka frequency range multiple access TTC & DT Systems is divided into：Need the high priority of exclusive 1 Beam resources pre-
Distribution broadband access can pre-allocate narrow band access with the high priority of 1 Beam resources of other user sharings, need exclusive 1
The low priority of a Beam resources is with meeting broadband access and can be with the low priorities of other 1 Beam resources of user sharing with chance
Narrow band access.In predistribution narrow band access, Ka frequency range multiple access TT&C system judges whether available free Beam resources, if having
It distributes Beam resources to access to user, if nothing, analyze in used wave beam with the presence or absence of the money for meeting covering in service time
Source is to distribute idle Beam resources, otherwise refusal access.
With meeting in narrow band access, it whether there is the money for meeting and covering in service time in the used wave beam of analysis system
Source is distributed wave beam idling-resource if having and is accessed to user, if nothing, judge whether there is idle wave beam, be, distributes idle wave
Shu Ziyuan, otherwise refusal access.
Ka frequency range multiple access TTC & DT Systems user's access process is as follows：
1, Ka frequency range multiple access TT&C Resources scheduling system KMA is directed to the access demand of different user, according to system idling-resource
Ability carries out the distribution of user's access-in resource.User initiates access request, when there is user to need to access, Ka frequency range multiple access observing and controlling
Resource scheduling system is it is first determined whether available free resource, including wave beam frequency band and code word whether there is for distribution,.If without sky
Not busy resource then refuses user's access, has, continues access process；
2, judge whether predistribution access, be to go to step 3, otherwise go to step 5；
3, judge whether to pre-allocate broadband access, be to go to step 4, otherwise enter predistribution narrow band access process；
4, judge that Ka frequency range multiple access TT&C Resources dispatch the whether available free Beam resources of system, be to allow to access and distribute wave beam
Resource, otherwise refusal access；
5, judge whether with broadband access is met, be to go to step 6, otherwise enter with chance narrow band access process；
6, judge the whether available free Beam resources of Ka frequency range multiple access TTC & DT Systems, be to allow to access and distribute wave beam money
Source, otherwise refusal access.
Refering to Fig. 2.During narrow band access, predistribution, which is accessed, to be with the difference for meeting access when in the presence of idle wave beam
When, predistribution accesses preferentially using idle wave beam, and accesses then look first in the wave beam used whether there is also can with meeting
With the frequency range or code word of access, those resources are preferentially used if having.In Ka frequency range multiple access TT&C system user's narrow band access stream
Cheng Zhong, Ka frequency range multiple access TT&C Resources scheduling system judge whether the access way of user pre-allocates access, if then entering pre-
Narrow band access process is distributed, is otherwise entered with chance narrow band access process.
In Ka frequency range multiple access TT&C system user's narrow band access process, Ka frequency range multiple access TT&C Resources dispatch system judgement
Whether the access way of user pre-allocates access, if then entering predistribution narrow band access process, otherwise enters and connects with chance narrowband
Enter process.
In predistribution narrow band access, the whether available free Beam resources of Ka frequency range multiple access TT&C system are judged, if having
It distributes Beam resources to access to user, if nothing, analyze in used wave beam with the presence or absence of the money for meeting covering in service time
Source is to distribute idle Beam resources, otherwise refusal access.
With meeting in access, analyze with the presence or absence of the resource covered in service time is met in used wave beam, if having
It then distributes wave beam idling-resource to access to user, if nothing, judges whether there is idle wave beam, be, distribute idle Beam resources,
Otherwise refusal access.
It is as follows to pre-allocate narrow band access process：
1, judge the whether available free wave beam of Ka frequency range multiple access TTC & DT Systems, be to allow to access and distribute idle wave beam money
Otherwise source goes to step 2；
2, judge it, with the presence or absence of the resource covered in service time is met, is to distribute idle wave beam money in used wave beam
Source, otherwise refusal access.
With meeting, narrow band access process is as follows：
1, judge with the presence or absence of the resource covered in service time is met in used wave beam, be to distribute wave beam idling-resource
It is accessed to user, otherwise goes to step 2；
2, idle wave beam is judged whether there is, is, distributes idle Beam resources, otherwise refusal access.
Refering to Fig. 3.The accessing user of Ka frequency range multiple access TTC & DT Systems can be divided into following 4 class：It needs to monopolize 1 wave
The high priority of Shu Ziyuan pre-allocates broadband access；It can be pre-allocated with the high priority of 1 Beam resources of other user sharings
Narrow band access；The low priority of exclusive 1 Beam resources is needed to access with access band is met；It can be 1 with other user sharings
The low priority of Beam resources accesses narrow band access with chance.
It is the description to the present invention and its embodiment provided to the engineers and technicians in familiar field of the present invention above,
These descriptions should be considered to be illustrative and not restrictive.Engineers and technicians can be accordingly in invention claims
Thought is done specific operation and is implemented, without prejudice to the spirit and scope of the invention as defined in the appended claims, can be right
It makes a variety of changes in the form and details.Above-mentioned these are regarded as coverage of the invention.
Claims (9)
1. a kind of Ka frequency range multiple access TT&C Resources dispatching method, it is characterised in that include the following steps：By the spaceborne Ka resource of frequency range
It is divided into multi-beam resource, nonoverlapping frequency sub-band resource is further divided into each wave beam, each frequency sub-band utilizes different spreading codes
It distinguishes, to realize the three-dimensional setting of Ka frequency range multiple access TTC & DT Systems resource；Then the user's root that will have access demand
It is divided into predistribution broadband, predistribution narrowband according to priority, rate difference, accesses four type of narrowband with chance with chance access band
Type；In the scheduling of multiple access TT&C Resources, first according to user's access request, judge whether Ka frequency range multiple access TTC & DT Systems have
Idling-resource, no, refusal access are to judge whether to pre-allocate user's access, are to continue predistribution access, then judge whether
Otherwise broadband access carries out predistribution narrow band access；It is to carry out judging whether there is idle Beam resources, has, be allocated wave
Shu Ziyuan, otherwise refusal access；If predistribution cannot access, enter with meet access, judge whether broadband access, it is no, then into
Row narrowband is to judge whether there is idle Beam resources, is to be allocated Beam resources with access is met, no, then refuses to access.
2. Ka frequency range multiple access TT&C Resources dispatching method as described in claim 1, it is characterised in that：For narrow band access, then
According to being to pre-allocate or access the selection for carrying out frequency range or code word with meeting, from Beam resources, the resource of frequency range and code source 3
The division of dimension progress resource.
3. Ka frequency range multiple access TT&C Resources dispatching method as described in claim 1, it is characterised in that：Ka frequency range multiple access observing and controlling is logical
The accessing user of letter system is divided into：Need exclusive 1 Beam resources high priority predistribution broadband access, can be with other use
The high priority predistribution narrow band access of shared 1 Beam resources in family needs the low priority of exclusive 1 Beam resources wide with meeting
With access and can be with the low priorities of other 1 Beam resources of user sharing with chance narrow band access.
4. Ka frequency range multiple access TT&C Resources dispatching method as described in claim 1, it is characterised in that：Ka frequency range multiple access observing and controlling money
The access demand that system KMA is directed to different user is dispatched in source, according to the ability of system idling-resource, carries out user's access-in resource point
Match.
5. Ka frequency range multiple access TT&C Resources dispatching method as described in claim 1, it is characterised in that：User, which initiates access, to be asked
It asks, Ka frequency range multiple access TT&C Resources dispatch system it is first determined whether available free resource, including wave beam, frequency band and code word deposit
For distribution, accessed if it is not, refusing user.
6. Ka frequency range multiple access TT&C Resources dispatching method as described in claim 1, it is characterised in that：Predistribution accesses and with chance
The difference of access is that when there is idle wave beam, predistribution access is then sentenced preferentially using idle wave beam with access is met first
Whether there is also the frequency range that can be accessed or code words in the disconnected wave beam used, those resources are preferentially used if having.
7. Ka frequency range multiple access TT&C Resources dispatching method as described in claim 1, it is characterised in that：In Ka frequency range multiple access observing and controlling
In system user narrow band access process, Ka frequency range multiple access TT&C Resources scheduling system judges whether the access way of user pre-allocates
Otherwise access enters if then entering predistribution narrow band access process with chance narrow band access process.
8. Ka frequency range multiple access TT&C Resources dispatching method as described in claim 1, it is characterised in that：In predistribution narrow band access
In, Ka frequency range multiple access TT&C system judges whether available free Beam resources, Beam resources distributed if having to be accessed to user, if
Nothing is analyzed in used wave beam with the presence or absence of the resource covered in service time is met, is to distribute idle Beam resources,
Otherwise refusal access.
9. Ka frequency range multiple access TT&C Resources dispatching method as described in claim 1, it is characterised in that：With chance narrow band access
In, with the presence or absence of the resource covered in service time is met in the used wave beam of analysis system, the wave beam free time is distributed if having
Resource is accessed to user, if nothing, is judged whether there is idle wave beam, is, idle Beam resources are distributed, otherwise refusal access.
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| CN113852406A (en) * | 2021-08-24 | 2021-12-28 | 合肥工业大学 | Multi-beam relay satellite task scheduling method and device |
| WO2022048596A1 (en) * | 2020-09-02 | 2022-03-10 | 华为技术有限公司 | Method and apparatus for satellite communication |
| CN116527109A (en) * | 2023-04-26 | 2023-08-01 | 中国人民解放军32039部队 | Method and device for space-based random access to intelligent spacecraft |
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| CN109768822B (en) * | 2018-12-26 | 2022-03-04 | 航天恒星科技有限公司 | Satellite measurement and control resource scheduling method and device |
| WO2022048596A1 (en) * | 2020-09-02 | 2022-03-10 | 华为技术有限公司 | Method and apparatus for satellite communication |
| CN113852406A (en) * | 2021-08-24 | 2021-12-28 | 合肥工业大学 | Multi-beam relay satellite task scheduling method and device |
| CN113852406B (en) * | 2021-08-24 | 2024-04-30 | 合肥工业大学 | Multi-beam relay satellite task scheduling method and device |
| CN116527109A (en) * | 2023-04-26 | 2023-08-01 | 中国人民解放军32039部队 | Method and device for space-based random access to intelligent spacecraft |
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