CN111404594A - Positioning system and method for automatically setting time sequence and cell number - Google Patents
Positioning system and method for automatically setting time sequence and cell number Download PDFInfo
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- CN111404594A CN111404594A CN202010188990.1A CN202010188990A CN111404594A CN 111404594 A CN111404594 A CN 111404594A CN 202010188990 A CN202010188990 A CN 202010188990A CN 111404594 A CN111404594 A CN 111404594A
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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
- H04B7/18519—Operations control, administration or maintenance
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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
-
- 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
- H04B7/18521—Systems of inter linked satellites, i.e. inter satellite service
Abstract
The invention relates to a positioning system and a method for automatically setting time sequence and cell number thereof, which is characterized by comprising the following steps: acquiring communicable information of all satellites; screening out communicable information of all satellites from satellites
All satellites in communication, note
(ii) a Screening out the communication-capable information of all satellites
All satellites in communication, note
(ii) a Filtration
And
the timing sequence already contained in the satellite, obtaining a settable timing sequence L eftSID, and setting the satellite
The time sequence SID = min (L eftSID), it solves the problems of insufficient time sequence multiplexing and even wrong setting caused by manual setting, and can make the large-scale positioning system quickly complete the setting of satellite time sequence and cell number, improve the time sequence multiplexing degree, avoid the interference between signals, reduce the human error, and have significant technical progress.
Description
Technical Field
The invention relates to the technical field of positioning, in particular to a positioning system and a method for automatically setting a time sequence and a cell number.
Background
In a positioning system, the synchronization frames of the satellites are transmitted in a time division manner, and each satellite occupies a time sequence. Each satellite has a number, which cannot be repeated in the same positioning system. Setting the time sequence and number for each satellite is currently a manual setting. The manual setting can cause the problems of insufficient time sequence multiplexing, even setting errors and the like.
Disclosure of Invention
The invention mainly aims to provide a method for automatically setting time sequence and cell number of a positioning system, which can automatically set the satellite time sequence and cell number of the positioning system, can enable a large-scale positioning system to quickly complete the setting of the satellite time sequence and cell number, improve the time sequence multiplexing degree, avoid the interference between signals and reduce human errors.
In order to achieve the above object, the method for automatically setting time sequence and cell number of the positioning system of the present invention is characterized by comprising the following steps:
acquiring communicable information of all satellites;
screening out communicable information of all satellites from satellite SiAll satellites in communication, note
Screening out the communication-capable information of all satellites
All satellites in communication, note
Filtration
And
the time sequence contained in the satellite is L eftSID which can be set, and the time sequence SID of the satellite Si is set to min (L eftSID).
In a preferred embodiment, the method further comprises querying and filtering the CID already used by the satellite to which the time sequence SID has been assigned, and obtaining the settable cell number L eftCID, satellite SiMin (L eftCID).
In a preferred embodiment, in the process of acquiring communicable information of all satellites, each satellite transmits a wireless frame, and other receivable satellites record as an explicit communication satellite of the satellite; the terminal tests in the whole positioning area, and satellites capable of receiving signals simultaneously are implicit communication satellites; the explicit communication satellite and the implicit communication satellite are combined to form communicable information for the satellite.
In one preferred embodiment, the slave i-1, the master satellite S1Initially, traverse all satellites SiTo complete the distribution and setting of all satellite time sequences and cell numbers.
In a preferred embodiment, the method further comprises a checking step of checking SID/CID combinations of all satellites, and if repeated, re-assigning and setting.
The invention also relates to a positioning system, which is characterized in that: the positioning system automatically distributes and sets the time sequence and the cell number of the satellite by the method.
In one preferred embodiment, the positioning system includes
The satellite communication information acquisition module is used for sending instructions to enable each satellite to send wireless frames and recording information of other receivable satellites as explicit communication satellite information of the satellite; when the terminal tests in the whole positioning area, recording the information of the satellites which can receive signals simultaneously as implicit communication satellites; combining the explicit communication satellite information and the implicit communication satellite information to form communicable information of the satellite, and further gathering communicable information of all the satellites;
satellite timing SID assignment and setup module for filtering
And
the timing sequence already contained in the satellite is obtained, a settable timing sequence L eftSID is obtained, and the satellite S is setiTime sequence SID of min (L eftSID), slave i of 1, master satellite S1Initially, traverse all satellites SiTo complete the distribution and setting of all satellite time sequence SIDs;
a satellite cell number distribution and setting module, which is used for inquiring and filtering the CID used by the satellite distributed with the time sequence SID according to the setting result of the satellite time sequence SID distribution and setting module to obtain the settable cell number L eftCID and set the satellite SiMin (L eftCID).
In a preferred embodiment, the positioning system further comprises a check and correction module for checking whether the SID/CID combinations of all satellites are repeated and/or whether the satellite can receive a satellite signal with the same SID of the parent satellite, and notifying the satellite timing SID assignment and setting module and the satellite timing SID assignment and setting module to reassign and set if the SID/CID combinations of the satellite are repeated or the satellite can receive a satellite signal with the same SID of the parent satellite.
In summary, the method of the present invention filters the communicable information of all satellites by obtaining the communicable information
And
the timing sequence already included in the satellite S is obtained, and the timing sequence L eftSID can be set to set the satellite SiMin (L eftSID), and inquiring and filtering the CID already used by the satellite to which the time sequence SID has been assigned, to obtain the settable cell number L eftCID, and the satellite SiThe technical means and combination such as CID (L eftCID) solve the problems of insufficient time sequence multiplexing and even wrong setting caused by manual setting, can enable a large-scale positioning system to quickly complete the setting of satellite time sequences and cell numbers, improve the time sequence multiplexing degree, avoid the interference between signals, reduce the artificial errors, and have remarkable technical progress.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic illustration of communications between satellites of a positioning system in a preferred embodiment;
fig. 2 is a schematic diagram of the communication between a terminal and a positioning system satellite in a preferred embodiment;
fig. 3 is a schematic diagram of communication between satellites of a positioning system in a preferred embodiment.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In a preferred embodiment, the present invention is implemented by acquiring communicable information of all satellites first, and acquiring the communicable information
Each satellite transmits a radio frame and the other satellites that can receive record as explicit communication satellites for that satellite.
The terminal tests in the whole positioning area, and the satellites capable of receiving signals simultaneously are implicit communication satellites.
The two communication satellites are combined into communicable information of the satellite.
The communicable information of all satellites is referred to as all communicable information.
Specifically, assuming that the communication situation of a certain positioning system satellite is as shown in fig. 1, wireless frames are transmitted by turns from a1 to a9, and the communication situation between satellites is obtained. The satellites that each satellite is linearly connected to are satellites that can communicate with each other.
The terminals are tested in full area as shown in fig. 2. The terminal can receive signals from four base stations of a1, a2, A3 and a4, and it can be seen from fig. 1 that a1 and a4 cannot communicate with each other. Thus, a1 and a4 belong to implicit communication satellites.
The finally obtained communication information is shown in fig. 3, the straight lines are connected to display communication satellites, and the straight lines with arrows are connected to implicit communication satellites.
For ease of understanding, the relevant definitions and variables are set forth below:
the time sequence number refers to the time sequence occupied by the satellite transmission in the whole transmission period of the satellite, and the time sequence number, also referred to as the time sequence for short, is recorded as SID.
The cell number is a combination of time sequence numbers (i.e., time sequences) that are used to number satellites, each satellite's number is unique, and the cell number is denoted as the CID.
And (4) parent satellite: the A satellite obtains a synchronization signal from the B satellite, which is referred to as the parent satellite of the A satellite.
The distribution target adopting the CID/SID of the method of the invention comprises the following steps:
the satellite should be able to receive the parent satellite's signal but not the same satellite signal as the parent satellite SID.
A positioning terminal (Tag) cannot receive a plurality of satellite signals of the same SID in any positioning area.
In order to improve the multiplexing degree of the time sequence, the satellite CID/SID allocation principle is as follows: and the cell number is preferentially distributed, and the time sequence is multiplexed as much as possible.
Si: i represents a satellite number, which is a combination of a cell number and a time number
The communications described below all include explicit and implicit communications.
AllSID refers to all timing sets: AllSID {1,2,3,4,5 … }
Occupied SID refers to a set of timing sequences that have been occupied
L eftSID refers to the set of timing sequences left available
The AllCID refers to the set of all cell numbers: all cid ═ {1,2,3,4,5 … }
Occupied refers to a set of cell numbers that are already occupied
L eftCID means the set of cell numbers left available
Based on the known communication situation of all satellites, the CID and SID assignment of the satellites is performed as follows
1) From 1, the main satellite S1Start of
2) Finding out the communication capability and S from all the communicable informationiSatellite for communication
3) Finding out the communication capability from all the communicable information
Satellite for communication
4)
And
the timing sequence contained is recorded as Occupied SID
5) The timing sequence that can be set is L eftSID-AllSID-Occupied SID
6)SiSetting SiMin (L eftSID), the SID assignment of the current satellite is completed
7) And allocating CID. Query for SID S in all satellites with CID already assignediCID of Satellite (SID) noted OccupiedCID
8) A cell number L eftcd (AllCID — occipiedcid) may be set
9)SiSetting Si(CID)＝min(LeftCID)
10)i＝i+1
11) Repeating steps 1) to 10)
12) Examination of
i. Whether SID/CID combinations of all satellites are not repeated
All satellites should be able to receive the parent satellite's signal but not receive the same satellite signal as the parent satellite's SID.
In particular, as shown in figure 3,
and (3) distributing cell numbers and time sequence numbers to the satellites:
s1, Primary satellite A1 Start
S2, finding out the satellite capable of communicating with the A1 from all communication information: a2, A3, A4, A7
S3, finding out the satellite capable of communicating with A2, A3, A4 and A7 from all communication information: a1, A2, A3, A4, A5, A6, A7, A8
S4, the occupied time sequence is null
S5, the settable time sequence is the full time sequence.
The timing of S6, A1 is set to 1, SID assignment of A1 is completed
S7 satellite with no other sequence 1
S8, setting the cell number as the whole cell number
Cell numbers of S9 and A1 are set to 1
S10, setting a satellite A2,
the communication satellites of S11 and A2 are: a1, A3, A4
The communication satellites of S12, A1, A3 and A4 are as follows: a1, A2, A3, A4, A5, A6, A7, A8
S13, occupied time sequence is 1
S14, the set time sequence is {2,3,4,5, … }.
The timing of S15, A1 is set to 2, and SID assignment of A1 is completed
S16 satellite with no other sequence 2
S17, setting the cell number as the whole cell number
Cell numbers of S18 and A2 are set to 1
By analogy, all time sequence numbers and cell numbers can be distributed.
In a preferred embodiment, the positioning system includes
The satellite communication information acquisition module is used for sending instructions to enable each satellite to send wireless frames and recording information of other receivable satellites as explicit communication satellite information of the satellite; when the terminal tests in the whole positioning area, recording the information of the satellites which can receive signals simultaneously as implicit communication satellites; combining the explicit communication satellite information and the implicit communication satellite information to form communicable information of the satellite, and further gathering communicable information of all the satellites;
satellite timing SID assignment and setup module for filtering
And
the timing sequence already contained in the satellite is obtained, a settable timing sequence L eftSID is obtained, and the satellite S is setiTime sequence SID of min (L eftSID), slave i of 1, master satellite S1Initially, traverse all satellites SiTo complete the distribution and setting of all satellite time sequence SIDs;
a satellite cell number distribution and setting module, which is used for inquiring and filtering the CID used by the satellite distributed with the time sequence SID according to the setting result of the satellite time sequence SID distribution and setting module to obtain the settable cell number L eftCID and set the satellite SiMin (L eftCID).
And the checking and correcting module is used for checking whether the SID/CID combination of all the satellites is repeated and/or checking whether the satellite can receive the satellite signal with the same SID as the father satellite, and informing the satellite time sequence SID allocation and setting module and the satellite time sequence SID allocation and setting module to reallocate and set if the SID/CID combination of the satellite is repeated or the satellite can receive the satellite signal with the same SID as the father satellite.
The above is only a preferred embodiment or an example of the implementation process of the method of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by the content of the description and the drawings of the present invention or other related technical fields directly/indirectly applied under the inventive concept of the present invention are included in the scope of the present invention.
Claims (8)
1. A method for automatically setting time sequence and cell number of a positioning system is characterized by comprising the following steps:
acquiring communicable information of all satellites;
screening out communicable information of all satellites from satellites
All satellites in communication, note
；
Screening out the communication-capable information of all satellites
All satellites in communication, note
；
Filtration
And
the timing sequence already contained in the satellite, obtaining a settable timing sequence L eftSID, and setting the satellite
SID = min (L eftSID).
2. The method for automatically setting timing and cell number of positioning system as claimed in claim 1, further comprising inquiring and filtering the CID already used by the satellite to which the timing SID has been assigned to obtain the settable cell number L eftCID, satellite number L eftCID
CID = min (L eftCID).
3. The automatic timing and cell number setting method for a positioning system according to claim 2, wherein in the acquiring communicable information of all satellites, each satellite transmits a wireless frame, and other receivable satellites are recorded as explicit communication satellites of the satellite; the terminal tests in the whole positioning area, and satellites capable of receiving signals simultaneously are implicit communication satellites; the explicit communication satellite and the implicit communication satellite are combined to form communicable information for the satellite.
4. The automatic timing and cell number setting method of positioning system of claim 2, wherein from i =1, the primary satellite
Initially, traverse all satellites
To complete the distribution and setting of all satellite time sequences and cell numbers.
5. The automatic timing and cell number setting method for a positioning system as claimed in claim 2,3 or 4, further comprising a checking step of checking the SID/CID combinations of all satellites, and re-assigning and setting if repeated.
6. A positioning system, characterized by: the positioning system performs automatic allocation and setting of the timing and cell number of the satellites by the method of any of the above claims 1 to 5.
7. The positioning system of claim 6, wherein: comprises that
The satellite communication information acquisition module is used for sending instructions to enable each satellite to send wireless frames and recording information of other receivable satellites as explicit communication satellite information of the satellite; when the terminal tests in the whole positioning area, recording the information of the satellites which can receive signals simultaneously as implicit communication satellites; combining the explicit communication satellite information and the implicit communication satellite information to form communicable information of the satellite, and further gathering communicable information of all the satellites;
satellite timing SID assignment and setup module for filtering
And
the timing sequence already contained in the satellite, obtaining a settable timing sequence L eftSID, and setting the satellite
SID = min (L eftSID), slave i =1, master satellite
Initially, traverse all satellites
To complete the distribution and setting of all satellite time sequence SIDs;
a satellite cell number distribution and setting module, which is used for inquiring and filtering the CID used by the satellite distributed with the time sequence SID according to the setting result of the satellite time sequence SID distribution and setting module to obtain the settable cell number L eftCID and set the satellite cell number
CID = min (L eftCID).
8. The positioning system of claim 7, wherein: the system also comprises a checking and correcting module which is used for checking whether the SID/CID combination of all the satellites is repeated and/or checking whether the satellite can receive the satellite signal with the same SID of the father satellite, and informing the satellite time sequence SID allocating and setting module and the satellite time sequence SID allocating and setting module to reallocate and set if the SID/CID combination of the satellite is repeated or the satellite can receive the satellite signal with the same SID of the father satellite.
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Application publication date: 20200710 |