CN113131984B - Method and device for indicating satellite coverage information - Google Patents
Method and device for indicating satellite coverage information Download PDFInfo
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- CN113131984B CN113131984B CN201911406764.XA CN201911406764A CN113131984B CN 113131984 B CN113131984 B CN 113131984B CN 201911406764 A CN201911406764 A CN 201911406764A CN 113131984 B CN113131984 B CN 113131984B
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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
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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
- H04B7/18532—Arrangements for managing transmission, i.e. for transporting data or a signalling message
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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
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Abstract
The invention discloses a method and equipment for indicating satellite coverage information, wherein the method comprises the following steps: obtaining basic coverage information of a communication constellation system in a target coverage area, wherein the basic coverage information is used for indicating the coverage capability of the communication constellation system in the target coverage area; generating actual coverage information relative to the basic coverage information for the target coverage area according to the current operating condition of the communication constellation system; and sending the actual coverage information to a target terminal. The method provided by the embodiment of the invention can inform the terminal of the relevant information of the available satellite cell in the current target coverage area through the network, assist the terminal to access the network and provide information support for the normal work of the terminal in the area.
Description
Technical Field
The invention relates to the technical field of satellite communication, in particular to a method and equipment for indicating satellite coverage information.
Background
To achieve global coverage, most Low Earth Orbit (LEO) satellite communication constellation systems employ polar or near polar orbits. For example, 77 satellites are adopted in the iridium constellation design, the orbit is a near polar orbit, the inclination angle of the orbit is 86.4 degrees, finally, the networking operation is composed of 66 satellites, and the schematic diagram of the polar orbit is shown in fig. 1.
The satellite travels around the earth once per turn through the south and north regions of the earth. For a low-orbit constellation with a small number of satellites, the number of satellites on each orbital plane is small, the interval is large, the satellites on a plurality of orbital planes can be prevented from passing through the bipolar region in a concentrated manner by designing that the time of each orbital plane satellite passing through the bipolar region is different, and the interference condition of the bipolar region is improved in such a manner. Or an inclined orbit is adopted, as shown in fig. 1, an included angle exists between the orbit surface and the polar orbit, so that the satellite is prevented from directly passing through the two polar regions, and the mutual interference of the polar regions is reduced.
For large low-orbit LEO communication constellation systems, hundreds or even thousands of polar satellites are typically included, and each satellite on each orbital plane passes through north and south regions. With the increase of the number of the orbital planes, the number of satellites passing through the south and north polar regions is rapidly increased, so that the ground coverage areas of a plurality of satellites are seriously overlapped, the satellite communication interference in the two polar regions is serious, and even the normal communication of a ground terminal is influenced.
Fig. 2 shows the distribution of the normal coverage of satellite cells, and non-adjacent cells can be frequency-multiplexed. Fig. 3 shows the overlapping coverage of satellite cells in two polar regions, and the original frequency division multiplexing strategy may fail due to the overlapping coverage of the cells, resulting in severe co-channel interference in the overlapping region. Fig. 3 illustrates 7 satellite cells, for example, whose overlapping coverage is already severe. For a large low-orbit constellation of 60 satellites per orbital plane with 20 orbital planes, counting from 80 ° north latitude to the north pole in the north pole region, there may be 66 satellites distributed in the region at the same time, resulting in very severe overlapping coverage.
In general, when a communication constellation system operates, in a region with serious ground coverage overlap, interference can be reduced or avoided by turning off signals of part of satellite cells. Under the condition that the satellite constellation operates dynamically, how to timely and accurately inform the closed satellite cells or the available satellite cells in the network has an important influence on the normal operation of the system.
Disclosure of Invention
At least one embodiment of the present invention provides a method and a device for indicating satellite coverage information, which notify a terminal of relevant information of an available satellite cell in a current target coverage area through a network, so as to assist the terminal to access the network and provide information support for normal operation of the terminal in the area.
In a first aspect, an embodiment of the present invention provides a method for indicating satellite coverage information, which is applied to a network device, and includes:
obtaining basic coverage information of a communication constellation system in a target coverage area, wherein the basic coverage information is used for indicating the coverage capability of the communication constellation system in the target coverage area;
generating actual coverage information relative to the basic coverage information for the target coverage area according to the current operating condition of the communication constellation system;
and sending the actual coverage information to a target terminal.
With reference to the first aspect, in some implementations of the first aspect, the step of obtaining basic coverage information of the communication constellation system in the target coverage area includes:
and generating basic coverage information of the communication constellation system in the target coverage area according to a design scheme of the communication constellation system and a management and control strategy of the satellite cell of the target coverage area.
With reference to the first aspect, in certain implementations of the first aspect, the base coverage information includes:
a satellite identification;
an optional out-of-service time for the satellite to pass through the target coverage area;
an optional shutdown strategy for each orbital plane satellite as it traverses the target coverage area.
With reference to the first aspect, in some implementations of the first aspect, the step of generating actual coverage information for the target coverage area relative to the base coverage information according to a current operating condition of the communication constellation system includes:
determining an available satellite cell of the target coverage area according to the current operating condition of the communication constellation system;
and generating actual coverage information comprising the available satellite cells and/or the unavailable satellite cells on the basis of the basic coverage information according to the available satellite cells.
With reference to the first aspect, in certain implementations of the first aspect, the actual coverage information includes one or more of the following information:
actual out-of-service times when the satellite passes through the target coverage area, the actual out-of-service times being selected from the selectable out-of-service times;
an actual shutdown strategy for each orbital plane satellite as it passes through the target coverage area, the actual shutdown strategy selected from the selectable shutdown strategies;
a custom out-of-service time for the satellite to pass through the target coverage area, the custom out-of-service time being different from the selectable out-of-service time;
a custom shutdown strategy for each orbital plane satellite as it passes through the target coverage area, the custom shutdown strategy being different from the selectable shutdown strategies;
information that changes with respect to the base overlay information.
With reference to the first aspect, in certain implementations of the first aspect, the method further includes:
and sending the basic coverage information to the target terminal by using a downlink data channel.
With reference to the first aspect, in some implementations of the first aspect, the step of sending the actual coverage information to the target terminal includes:
and sending the actual coverage information to the target terminal through a downlink broadcast message, or through a self-defined special signaling, or through an existing signaling.
With reference to the first aspect, in certain implementation manners of the first aspect, the target coverage area is an area where coverage of a plurality of preselected satellite cells overlap, and the network-side device is a gateway station and/or a core network device.
In a second aspect, an embodiment of the present invention provides another method for indicating satellite coverage information, which is applied to a terminal, and includes:
receiving actual coverage information of a communication constellation system in a target coverage area, which is sent by network side equipment;
determining an available satellite cell of a target coverage area according to the actual coverage information and pre-obtained basic coverage information of the communication constellation system in the target coverage area;
the basic coverage information is used to indicate a coverage capability of the communication constellation system in the target coverage area, and the actual coverage information is coverage information generated for the target coverage area relative to the basic coverage information according to a current operating condition of the communication constellation system.
With reference to the second aspect, in some implementations of the second aspect, the method further includes:
and selecting the target satellite cell for connection or switching according to the determined available satellite cell.
With reference to the second aspect, in some implementations of the second aspect, the base coverage information includes:
a satellite identification;
an optional out-of-service time for the satellite to pass through the target coverage area;
an optional shutdown strategy for each orbital plane satellite as it traverses the target coverage area.
With reference to the second aspect, in certain implementations of the second aspect, the actual coverage information includes one or more of the following information:
actual out-of-service times when the satellite passes through the target coverage area, the actual out-of-service times being selected from the selectable out-of-service times;
an actual shutdown strategy for each orbital plane satellite as it passes through the target coverage area, the actual shutdown strategy selected from the selectable shutdown strategies;
a custom out-of-service time for the satellite to pass through the target coverage area, the custom out-of-service time being different from the optional out-of-service time;
a custom shutdown strategy for each orbital plane satellite as it passes through the target coverage area, the custom shutdown strategy being different from the selectable shutdown strategy;
information that changes with respect to the base coverage information.
With reference to the second aspect, in some implementations of the second aspect, the method further includes:
and receiving the basic coverage information sent by the network side equipment through a downlink data channel.
With reference to the second aspect, in some implementation manners of the second aspect, the step of receiving actual coverage information of the communication constellation system in the target coverage area, where the actual coverage information is sent by the network-side device, includes:
and receiving the actual coverage information sent by the network side equipment through a downlink broadcast message, or through a self-defined special signaling, or through an existing signaling.
In a third aspect, an embodiment of the present invention provides an apparatus for indicating satellite coverage information, which is applied to a network side device, and includes:
a first information obtaining module, configured to obtain basic coverage information of a communication constellation system in a target coverage area, where the basic coverage information is used to indicate a coverage capability of the communication constellation system in the target coverage area;
a second information generating module, configured to generate actual coverage information corresponding to the basic coverage information for the target coverage area according to a current operating condition of the communication constellation system;
and the information sending module is used for sending the actual coverage information to the target terminal.
With reference to the third aspect, in certain implementation manners of the third aspect, the first information obtaining module is further configured to generate basic coverage information of the communication constellation system in the target coverage area according to a design scheme of the communication constellation system and a management and control policy of a satellite cell of the target coverage area.
With reference to the third aspect, in certain implementations of the third aspect, the base coverage information includes:
a satellite identification;
an optional out-of-service time for the satellite to pass through the target coverage area;
an optional shutdown strategy for each orbital plane satellite as it traverses the target coverage area.
With reference to the third aspect, in certain implementation manners of the third aspect, the second information generating module is further configured to determine an available satellite cell of the target coverage area according to a current operating condition of the communication constellation system; and generating actual coverage information comprising the available satellite cells and/or the unavailable satellite cells on the basis of the basic coverage information according to the available satellite cells.
With reference to the third aspect, in certain implementations of the third aspect, the actual coverage information includes one or more of the following information:
actual out-of-service times when the satellite passes through the target coverage area, the actual out-of-service times being selected from the selectable out-of-service times;
an actual shutdown strategy for each orbital plane satellite as it passes through the target coverage area, the actual shutdown strategy selected from the selectable shutdown strategies;
a custom out-of-service time for the satellite to pass through the target coverage area, the custom out-of-service time being different from the selectable out-of-service time;
a custom shutdown strategy for each orbital plane satellite as it passes through the target coverage area, the custom shutdown strategy being different from the selectable shutdown strategies;
information that changes with respect to the base overlay information.
With reference to the third aspect, in some implementation manners of the third aspect, the information sending module is further configured to send the basic coverage information to the target terminal by using a downlink data channel.
With reference to the third aspect, in some implementation manners of the third aspect, the information sending module is further configured to send the actual coverage information to the target terminal through a downlink broadcast message, or through a customized dedicated signaling, or through an existing signaling.
With reference to the third aspect, in certain implementations of the third aspect, the target coverage area is an area where coverage of a plurality of preselected satellite cells overlap, and the network-side device is a gateway station and/or a satellite.
In a fourth aspect, an embodiment of the present invention provides a network side device, including: a memory, a processor, a transceiver, and a program stored on the memory and executable on the processor; the processor implements the following steps when executing the program:
obtaining basic coverage information of a communication constellation system in a target coverage area, wherein the basic coverage information is used for indicating the coverage capability of the communication constellation system in the target coverage area;
generating actual coverage information relative to the basic coverage information for the target coverage area according to the current operating condition of the communication constellation system;
and sending the actual coverage information to a target terminal.
In a fifth aspect, an embodiment of the present invention provides an apparatus for indicating satellite coverage information, where the apparatus is applied to a terminal, and the apparatus includes:
the information receiving module is used for receiving actual coverage information of a communication constellation system in a target coverage area, which is sent by network side equipment;
the information processing module is used for determining an available satellite cell of a target coverage area according to the actual coverage information and pre-obtained basic coverage information of the communication constellation system in the target coverage area;
the basic coverage information is used to indicate a coverage capability of the communication constellation system in the target coverage area, and the actual coverage information is coverage information generated for the target coverage area relative to the basic coverage information according to a current operating condition of the communication constellation system.
With reference to the fifth aspect, in certain implementations of the fifth aspect, the apparatus further includes:
and the access module is used for selecting the target satellite cell for connection or switching according to the determined available satellite cell.
With reference to the fifth aspect, in some implementations of the fifth aspect, the base coverage information includes:
a satellite identification;
an optional out-of-service time for the satellite to pass through the target coverage area;
an optional shutdown strategy for each orbital plane satellite as it traverses the target coverage area.
With reference to the fifth aspect, in certain implementations of the fifth aspect, the actual coverage information includes one or more of the following information:
actual out-of-service times when the satellite passes through the target coverage area, the actual out-of-service times being selected from the selectable out-of-service times;
an actual shutdown strategy for each orbital plane satellite as it passes through the target coverage area, the actual shutdown strategy selected from the selectable shutdown strategies;
a custom out-of-service time for the satellite to pass through the target coverage area, the custom out-of-service time being different from the optional out-of-service time;
a custom shutdown strategy for each orbital plane satellite as it passes through the target coverage area, the custom shutdown strategy being different from the selectable shutdown strategies;
information that changes with respect to the base coverage information.
With reference to the fifth aspect, in some implementation manners of the fifth aspect, the information receiving module is further configured to receive the basic coverage information sent by the network side device through a downlink data channel.
With reference to the fifth aspect, in some implementation manners of the fifth aspect, the information receiving module is further configured to receive, through a downlink broadcast message, or through a customized dedicated signaling, or through an existing signaling, the actual coverage information sent by the network side device.
In a seventh aspect, an embodiment of the present invention provides a terminal, including: a memory, a processor, a transceiver, and a program stored on the memory and executable on the processor; the processor implements the following steps when executing the program:
receiving actual coverage information of a communication constellation system in a target coverage area, which is sent by network side equipment;
determining an available satellite cell of a target coverage area according to the actual coverage information and pre-obtained basic coverage information of the communication constellation system in the target coverage area;
the basic coverage information is used to indicate the coverage capability of the communication constellation system in the target coverage area, and the actual coverage information is coverage information generated for the target coverage area relative to the basic coverage information according to the current operating condition of the communication constellation system.
In a seventh aspect, an embodiment of the present invention provides a computer storage medium, which includes instructions that, when executed on a computer, cause the computer to execute the method described above.
The embodiment of the invention has the beneficial effects that:
the embodiment of the invention realizes that the actual coverage information of the target coverage area is provided for the terminal, and the terminal can determine the currently available satellite cell of the target coverage area based on the actual coverage information and the pre-obtained basic coverage information, and then connects or switches to the available satellite cell, thereby ensuring the stability and reliability of terminal communication in a dynamically operating satellite constellation system. In addition, when the embodiment of the invention sends the actual coverage information, only the actual coverage information relative to the basic coverage information can be sent without sending complete basic coverage information, thereby not only effectively indicating the available satellite cells, but also reducing the signaling overhead of the network and ensuring the normal communication of the user terminal in the target coverage area.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic diagram of a polar or near-polar satellite orbit of the prior art;
FIG. 2 is a coverage diagram illustrating a normal coverage condition of a satellite cell according to the prior art;
FIG. 3 is a coverage diagram illustrating a satellite cell overlapping coverage condition according to the prior art;
fig. 4 is a flowchart of a method for indicating satellite coverage information according to an embodiment of the present invention;
fig. 5 is another flowchart of a method for indicating satellite coverage information according to an embodiment of the present invention;
fig. 6 is a structural diagram of an apparatus for indicating satellite coverage information according to an embodiment of the invention;
fig. 7 is a structural diagram of a network side device according to an embodiment of the present invention;
fig. 8 is another block diagram of an apparatus for indicating satellite coverage information according to an embodiment of the present invention;
fig. 9 is a structural diagram of a terminal according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances such that the embodiments of the application described herein may be implemented, for example, in sequences other than those illustrated or described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. In the description and in the claims "and/or" means at least one of the connected objects.
As described in the background art, for polar orbit or near polar orbit low orbit constellation systems with a small number of satellites, the number of satellites passing through two polar regions can be controlled by designing the positions of the satellites on different orbital planes, and the interference situation of the two polar regions is improved. In the overlapping coverage area, the ground interference is reduced by turning off the satellite signal or turning off part of the beam. Because the current low-orbit mobile constellation such as an iridium satellite system works in an L frequency band, a terminal antenna is wide-beam and near-omnidirectional, and the relative position relation between a terminal and a satellite cell does not need to be considered in the network communication process. Under the condition of not influencing the overall coverage of a constellation, partial beams or satellite signals are closed in a bipolar area coverage overlapping area, and a network does not need to inform a terminal of the available condition of a satellite cell.
In a low-earth orbit satellite broadband constellation system, in order to provide broadband data access similar to an optical fiber, the satellite system generally operates in a high frequency band, and a beam forming antenna is adopted, so that the beam directivity is strong. The ground terminal has high working frequency and narrow beam range, and the terminal needs to obtain the relative position relation with a satellite when accessing a network or switching between satellites. In a region with serious coverage overlap of two poles and the like, interference can be reduced by turning off a satellite or a beam, but information of an available cell in the current region of the terminal needs to be informed in a network so that the terminal can judge the position of the available satellite and normally communicate with the network through the available satellite cell.
In order to solve at least one of the above problems, embodiments of the present invention provide a method for indicating satellite coverage information, where a network notifies a terminal of relevant information of an available satellite cell in a current overlapping coverage area, so as to assist the terminal to access the network, and ensure communication reliability of the terminal in the area. Fig. 4 is a flowchart of the method when applied to a network-side device, where the network-side device may specifically be a core network device and/or a gateway station. For example, in a case where the network side device is a core network device, when the core network device executes the flow shown in fig. 4, the core network device may send actual coverage information, which is described below, to the target terminal through the gateway station and the satellite. In the case where the network-side device is a gateway station, the gateway station may transmit actual coverage information described below to a target terminal via a satellite. In the case where the network-side device includes a core network device and a gateway station, the flow of fig. 4 may be executed by cooperation of the core network device and the gateway station.
As shown in fig. 4, the method for indicating satellite coverage information according to the embodiment of the present invention is applied to a network device, and includes:
Here, the basic coverage information of the communication constellation system in the target coverage area may be generated according to a design scheme of the satellite communication constellation system and a management and control policy of a satellite cell in the target coverage area. The target coverage area is an area where the predetermined satellite cell overlapping coverage exceeds a preset threshold, for example, an area near two poles, and these areas are areas where coverage of a plurality of satellite cells overlap. The base coverage information may reflect coverage information and variation rules of the target coverage area, and the coverage information may include available satellite and/or beam information.
Specifically, the basic coverage information may include:
1) A satellite identification, such as a satellite ID.
2) Optional out-of-service times when a satellite passes through the target coverage area, such as: 5 minutes, 8 minutes, 10 minutes, etc.
3) And the selectable shutdown strategy of the satellite of each orbital plane when passing through the target coverage area, such as strategy 0, strategy 1, strategy 2, a custom strategy and the like, is defaulted to strategy 0. Another example is as follows: continuously closing 2 stars and keeping 1 star, etc.
And 42, generating actual coverage information relative to the basic coverage information for the target coverage area according to the current operating condition of the communication constellation system.
Here, as an implementation manner, the embodiment of the present invention may calculate, according to a current operating condition of a communication constellation system, an available satellite cell condition of a target coverage area at a current time, compare the available satellite cell condition with the basic coverage information, and count difference information inconsistent with the basic coverage information, so as to form actual coverage information relative to the basic coverage information, where the actual coverage information is used to indicate an actual coverage condition of a satellite cell of the target coverage area on the basis of the basic coverage information.
According to at least one embodiment of the present invention, the network side device may determine the available satellite cells in the target coverage area according to the current operating condition of the communication constellation system; actual coverage information including available satellite cells and/or unavailable satellite cells is then generated based on the base coverage information based on the available satellite cells.
Specifically, the actual coverage information includes one or more of the following information:
1) Actual out-of-service times when the satellite passes through the target coverage area, the actual out-of-service times selected from the selectable out-of-service times.
Here, in order to reduce signaling overhead, the actual out-of-service time may be represented by an index of a corresponding time value in the base coverage information table.
2) An actual shutdown strategy for each orbital plane satellite as it passes through the target coverage area, the actual shutdown strategy selected from the selectable shutdown strategies.
Here, in order to reduce signaling overhead, the actual shutdown policy may be represented by an index of the corresponding shutdown policy in the basic coverage information table.
3) A custom out-of-service time for the satellite to pass through the target coverage area, the custom out-of-service time being different from the selectable out-of-service time.
4) A custom shutdown strategy for each orbital plane satellite as it passes through the target coverage area, the custom shutdown strategy being different from the selectable shutdown strategies.
5) The information that changes with respect to the basic coverage information may include information that does not exist in the basic service information, information that does not correspond to the basic service information, and the like. For example, it is assumed that the optional out-of-service time is only 5 minutes and 10 minutes, but the out-of-service time adopted by the current system is 12 minutes, and since 12 minutes do not exist in the base coverage information, it is information that changes with respect to the base coverage information.
And 43, sending the actual coverage information to the target terminal.
Here, the network side device may send the actual coverage information to the target terminal through a satellite, and the target terminal may include a user terminal in or around the target coverage area. The size of the range around the target coverage area may be set according to factors such as the coverage area of the satellite cell and the movement speed of the user terminal, which is not specifically limited in the embodiment of the present invention.
Through the steps, the embodiment of the invention realizes that the actual coverage information of the target coverage area is provided for the terminal, and the terminal can determine the currently available satellite cell of the target coverage area based on the actual coverage information and the pre-obtained basic coverage information, and then connects or switches to the available satellite cell, thereby ensuring the stability and reliability of terminal communication in a dynamically operating satellite constellation system. In addition, in step 43, the embodiment of the present invention only needs to send the actual coverage information corresponding to the basic coverage information, and does not need to send complete basic coverage information, so that the available satellite cells can be effectively indicated, the signaling overhead of the network can be reduced, and the normal communication of the user terminal in the target coverage area is ensured.
It should be noted that the basic coverage information in the embodiment of the present invention may be information bound in advance on the terminal side, and in this case, it is not necessary to transmit the information through the network. As an alternative, the basic coverage information may be transmitted to the terminal from the network, and since the basic coverage information does not change frequently, the basic coverage information usually needs to be transmitted only once when the terminal accesses the satellite system. When a subsequent terminal accesses the satellite system, the network side equipment can inquire whether the terminal has the basic coverage information stored locally or not and check the version number of the basic coverage information, when the terminal has the basic coverage information of the latest version, the network side equipment does not need to send the basic coverage information to the terminal, otherwise, the network side equipment sends the basic coverage information to the terminal when the terminal is accessed.
In addition, in the case where the transmission of the basic coverage information is changed, the embodiment of the present invention may also transmit the changed basic coverage information to the terminal. In addition, in order to reduce signaling overhead, when the changed base coverage information is transmitted, only the changed part of the base coverage information may be transmitted.
According to at least one embodiment of the present invention, the network side device may send the basic coverage information to the target terminal by using a dedicated signaling and/or a downlink data channel.
According to at least one embodiment of the present invention, when sending the actual coverage information, the network side device may send the actual coverage information to the target terminal through a downlink broadcast message, or through a customized dedicated signaling, or through an existing signaling. The downlink broadcast message includes, but is not limited to, a System Information Block (SIB) message, and the signaling includes, but is not limited to, radio Resource Control (RRC) signaling, downlink Control Information (DCI), and a medium access control layer control element (MAC CE).
Referring to fig. 5, a method for indicating satellite coverage information according to an embodiment of the present invention, when applied to a terminal side, includes:
and step 51, receiving the actual coverage information of the communication constellation system in the target coverage area, which is sent by the network side device.
Here, the actual coverage information is coverage information generated for the target coverage area relative to the basic coverage information according to the current operating condition of the communication constellation system; the basic coverage information is used for indicating the coverage capability of the communication constellation system in the target coverage area. In addition, the basic coverage information may be pre-stored in the terminal, or may be pre-transmitted to the terminal by the network. For more detailed description of the actual coverage information and the basic coverage information, reference may be made to the above description, and details are not described herein.
And step 52, determining an available satellite cell in the target coverage area according to the actual coverage information and the pre-obtained basic coverage information of the communication constellation system in the target coverage area.
Here, the terminal may compare the actual coverage information with the basic coverage information stored locally, so as to determine the actual coverage information of the communication constellation system currently in the target coverage area, for example, information such as currently available satellite cells and/or available beams, and may further include information such as currently turned off satellite cells and/or beams.
Through the steps, the embodiment of the invention realizes the notification of the relevant information of the available satellite cells in the current target coverage area to the terminal, can assist the terminal to access the network and provides information support for the normal work of the terminal in the area.
According to at least one embodiment of the present invention, after the step 52, the terminal may further select a target satellite cell for connection or handover according to the determined available satellite cells.
According to at least one embodiment of the present invention, the terminal may further receive the basic coverage information sent by the network side device through a downlink data channel.
According to at least one embodiment of the present invention, in step 52, the terminal may further receive the actual coverage information sent by the network side device through a downlink broadcast message, or through a customized dedicated signaling, or through an existing signaling.
According to at least one embodiment of the present invention, before step 51, when the terminal initially accesses the satellite system, the terminal may receive the basic coverage information sent by the network side device, specifically, the terminal may determine whether the basic coverage information is locally stored:
when the basic coverage information is not stored locally, sending a request message of the basic coverage information to a network, and receiving the basic coverage information sent by the network in response to the request message;
when the basic coverage information is locally stored, version number information of the locally stored basic coverage information is sent to a network so that the network can judge whether the basic coverage information is the latest version, a confirmation response message that the basic coverage information sent by the network passes the verification is received when the basic coverage information is the latest version, and the latest version of the basic coverage information sent by the network is received and stored locally when the basic coverage information is not the latest version.
In addition, since the infrastructure coverage information may be changed, the terminal may also receive the changed infrastructure coverage information transmitted by the network at this time. Further, in order to reduce signaling overhead, when the network transmits the changed basic coverage information, the network may transmit only the changed part of the basic coverage information and the latest version number. And the terminal updates the locally stored basic coverage information and the version number according to the received changed partial information.
Various methods of embodiments of the present invention have been described above. An apparatus for carrying out the above method is further provided below.
The embodiment of the invention provides an indicating device of satellite coverage information shown in fig. 6, which is applied to network side equipment. Referring to fig. 6, an apparatus 60 for indicating satellite coverage information according to an embodiment of the present invention includes:
a first information obtaining module 61, configured to obtain basic coverage information of a communication constellation system in a target coverage area, where the basic coverage information is used to indicate a coverage capability of the communication constellation system in the target coverage area;
a second information generating module 62, configured to generate actual coverage information corresponding to the basic coverage information for the target coverage area according to a current operating condition of the communication constellation system;
and an information sending module 63, configured to send the actual coverage information to a target terminal.
Through the modules, the embodiment of the invention can indicate the current satellite coverage actual information of the target coverage area to the terminal, and assist the terminal to access or switch to a proper satellite cell.
According to at least one embodiment of the present invention, the first information obtaining module is further configured to generate basic coverage information of the communication constellation system in the target coverage area according to a design scheme of the communication constellation system and a management and control policy of a satellite cell of the target coverage area.
According to at least one embodiment of the invention, the base coverage information comprises:
a satellite identification;
an optional out-of-service time for the satellite to pass through the target coverage area;
an optional shutdown strategy for each orbital plane satellite as it traverses the target coverage area.
According to at least one embodiment of the present invention, the second information generating module is further configured to determine an available satellite cell of the target coverage area according to a current operating condition of the communication constellation system; and generating actual coverage information comprising the available satellite cells and/or the unavailable satellite cells on the basis of the basic coverage information according to the available satellite cells.
According to at least one embodiment of the invention, the actual coverage information comprises one or more of the following information:
actual out-of-service times when the satellite passes through the target coverage area, the actual out-of-service times being selected from the selectable out-of-service times;
an actual shutdown strategy for each orbital plane satellite as it passes through the target coverage area, the actual shutdown strategy selected from the selectable shutdown strategies;
a custom out-of-service time for the satellite to pass through the target coverage area, the custom out-of-service time being different from the optional out-of-service time;
a custom shutdown strategy for each orbital plane satellite as it passes through the target coverage area, the custom shutdown strategy being different from the selectable shutdown strategy;
information that changes with respect to the base coverage information.
According to at least one embodiment of the present invention, the information sending module is further configured to send the basic coverage information to the target terminal by using a downlink data channel.
According to at least one embodiment of the present invention, the information sending module is further configured to send the actual coverage information to the target terminal through a downlink broadcast message, or through a customized dedicated signaling, or through an existing signaling.
According to at least one embodiment of the present invention, the target coverage area is an area where coverage of a plurality of preselected satellite cells overlap, and the network-side device is a gateway station and/or a satellite.
Referring to fig. 7, an embodiment of the present invention provides a structural diagram of a network side device 700, including: a processor 701, a transceiver 702, a memory 703 and a bus interface, wherein:
in this embodiment of the present invention, the network side device 700 further includes: a program stored on a memory 703 and executable on a processor 701, which when executed by the processor 701 performs the steps of:
obtaining basic coverage information of a communication constellation system in a target coverage area, wherein the basic coverage information is used for indicating the coverage capability of the communication constellation system in the target coverage area;
generating actual coverage information relative to the basic coverage information for the target coverage area according to the current operating condition of the communication constellation system;
and sending the actual coverage information to a target terminal.
It can be understood that, in the embodiment of the present invention, when the computer program is executed by the processor 701, each process of the embodiment of the method for indicating satellite coverage information shown in fig. 4 can be implemented, and the same technical effect can be achieved.
In fig. 7, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 701, and various circuits, represented by memory 703, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 702 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.
The processor 701 is responsible for managing the bus architecture and general processing, and the memory 703 may store data used by the processor 701 in performing operations.
In some embodiments of the invention, there is also provided a computer readable storage medium having a program stored thereon, which when executed by a processor, performs the steps of:
obtaining basic coverage information of a communication constellation system in a target coverage area, wherein the basic coverage information is used for indicating the coverage capability of the communication constellation system in the target coverage area;
generating actual coverage information relative to the basic coverage information for the target coverage area according to the current operating condition of the communication constellation system;
and sending the actual coverage information to a target terminal.
When executed by the processor, the program can implement all implementation manners in the above-described method for indicating satellite coverage information applied to a network-side device, and can achieve the same technical effect, and is not described herein again to avoid repetition.
Referring to fig. 8, an embodiment of the present invention provides an apparatus 80 for indicating satellite coverage information, which can be applied to a terminal, and as shown in fig. 8, the frequency hopping apparatus 80 includes:
an information receiving module 81, configured to receive actual coverage information of a communication constellation system in a target coverage area, where the actual coverage information is sent by a network side device;
an information processing module 82, configured to determine an available satellite cell in a target coverage area according to the actual coverage information and pre-obtained basic coverage information of the communication constellation system in the target coverage area;
the basic coverage information is used to indicate the coverage capability of the communication constellation system in the target coverage area, and the actual coverage information is coverage information generated for the target coverage area relative to the basic coverage information according to the current operating condition of the communication constellation system.
According to at least one embodiment of the present invention, the above apparatus further comprises:
and the access module is used for selecting the target satellite cell for connection or switching according to the determined available satellite cell.
According to at least one embodiment of the present invention, the base coverage information includes:
a satellite identification;
an optional out-of-service time for the satellite to pass through the target coverage area;
an optional shutdown strategy for each orbital plane satellite as it traverses the target coverage area.
According to at least one embodiment of the invention, the actual coverage information comprises one or more of the following information:
actual out-of-service times when the satellite passes through the target coverage area, the actual out-of-service times being selected from the selectable out-of-service times;
an actual shutdown strategy for each orbital plane satellite as it passes through the target coverage area, the actual shutdown strategy selected from the selectable shutdown strategies;
a custom out-of-service time for the satellite to pass through the target coverage area, the custom out-of-service time being different from the selectable out-of-service time;
a custom shutdown strategy for each orbital plane satellite as it passes through the target coverage area, the custom shutdown strategy being different from the selectable shutdown strategy;
information that changes with respect to the base overlay information.
According to at least one embodiment of the present invention, the information receiving module is further configured to receive the basic coverage information sent by the network side device through a downlink data channel.
According to at least one embodiment of the present invention, the information receiving module is further configured to receive the actual coverage information sent by the network side device through a downlink broadcast message, or through a customized dedicated signaling, or through an existing signaling.
Referring to fig. 9, a schematic structural diagram of a terminal according to an embodiment of the present invention is shown, where the terminal 900 includes: a processor 901, a transceiver 902, a memory 903, a user interface 904, and a bus interface.
In this embodiment of the present invention, the terminal 900 further includes: a program stored on the memory 903 and operable on the processor 901.
The processor 901 implements the following steps when executing the program:
receiving actual coverage information of a communication constellation system in a target coverage area, which is sent by network side equipment;
determining an available satellite cell of a target coverage area according to the actual coverage information and pre-obtained basic coverage information of the communication constellation system in the target coverage area;
the basic coverage information is used to indicate a coverage capability of the communication constellation system in the target coverage area, and the actual coverage information is coverage information generated for the target coverage area relative to the basic coverage information according to a current operating condition of the communication constellation system.
It can be understood that, in the embodiment of the present invention, when being executed by the processor 901, the computer program can implement each process of the above-mentioned method embodiment of indicating satellite coverage information shown in fig. 5, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.
In fig. 9, the bus architecture may include any number of interconnected buses and bridges, with various circuits representing one or more processors, in particular processor 901, and memory, in particular memory 903, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 902 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 904 may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 901 is responsible for managing the bus architecture and general processing, and the memory 903 may store data used by the processor 901 in performing operations.
Receiving actual coverage information of a communication constellation system in a target coverage area, which is sent by network side equipment;
determining an available satellite cell of a target coverage area according to the actual coverage information and pre-obtained basic coverage information of the communication constellation system in the target coverage area;
the basic coverage information is used to indicate a coverage capability of the communication constellation system in the target coverage area, and the actual coverage information is coverage information generated for the target coverage area relative to the basic coverage information according to a current operating condition of the communication constellation system.
In some embodiments of the invention, there is also provided a computer readable storage medium having a program stored thereon, which when executed by a processor, performs the steps of:
under the condition of starting frequency hopping of repeated transmission of a Physical Uplink Shared Channel (PUSCH), determining a target frequency hopping mode according to the repeated times of the repeated transmission of the PUSCH, wherein the target frequency hopping mode is frequency hopping between PUSCH transmissions or frequency hopping in the PUSCH transmissions.
When executed by the processor, the program can implement all implementation manners in the above-mentioned indication method for satellite coverage information applied to the terminal side, and can achieve the same technical effect, and is not described herein again to avoid repetition.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions may be stored in a computer-readable storage medium if they are implemented in the form of software functional units and sold or used as separate products. Based on such understanding, the technical solution of the present invention or a part thereof which substantially contributes to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: u disk, removable hard disk, ROM, RAM, magnetic disk or optical disk, etc.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and shall cover the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (16)
1. A method for indicating satellite coverage information is applied to network side equipment, and is characterized by comprising the following steps:
obtaining basic coverage information of a communication constellation system in a target coverage area, wherein the basic coverage information is used for indicating the coverage capability of the communication constellation system in the target coverage area;
generating actual coverage information relative to the basic coverage information for the target coverage area according to the current operating condition of the communication constellation system;
sending the actual coverage information to a target terminal;
the basic coverage information includes:
a satellite identification;
an optional out-of-service time for the satellite to pass through the target coverage area;
an optional shutdown strategy for each orbital plane satellite as it passes through the target coverage area;
generating actual coverage information for the target coverage area relative to the base coverage information according to the current operating condition of the communication constellation system, including:
determining an available satellite cell of the target coverage area according to the current operating condition of the communication constellation system;
and generating actual coverage information comprising the available satellite cells and/or the unavailable satellite cells on the basis of the basic coverage information according to the available satellite cells.
2. The method of claim 1, wherein the step of obtaining the base coverage information of the communication constellation system in the target coverage area comprises:
and generating basic coverage information of the communication constellation system in the target coverage area according to a design scheme of the communication constellation system and a management and control strategy of the satellite cell of the target coverage area.
3. The method of claim 1, wherein the actual coverage information comprises one or more of:
actual out-of-service times when the satellite passes through the target coverage area, the actual out-of-service times being selected from the selectable out-of-service times;
an actual shutdown strategy for each orbital plane satellite as it passes through the target coverage area, the actual shutdown strategy selected from the selectable shutdown strategies;
a custom out-of-service time for the satellite to pass through the target coverage area, the custom out-of-service time being different from the optional out-of-service time;
a custom shutdown strategy for each orbital plane satellite as it passes through the target coverage area, the custom shutdown strategy being different from the selectable shutdown strategies;
information that changes with respect to the base coverage information.
4. The method of claim 1, further comprising:
and sending the basic coverage information to the target terminal by using a downlink data channel.
5. The method of claim 1, wherein the step of sending the actual coverage information to a target terminal comprises:
and sending the actual coverage information to the target terminal through a downlink broadcast message, or through a self-defined special signaling, or through an existing signaling.
6. The method of claim 1, wherein the target coverage area is an area where coverage of a plurality of preselected satellite cells overlap, and the network-side device is a gateway station and/or a core network device.
7. A method for indicating satellite coverage information is applied to a terminal, and is characterized by comprising the following steps:
receiving actual coverage information of a communication constellation system in a target coverage area, which is sent by network side equipment;
determining an available satellite cell of a target coverage area according to the actual coverage information and pre-obtained basic coverage information of the communication constellation system in the target coverage area;
the basic coverage information is used for indicating the coverage capability of the communication constellation system in the target coverage area, and the actual coverage information is coverage information which is generated for the target coverage area relative to the basic coverage information according to the current operating condition of the communication constellation system;
the basic coverage information includes:
a satellite identification;
an optional out-of-service time for the satellite to pass through the target coverage area;
an optional shutdown strategy for each orbital plane satellite as it passes through the target coverage area;
generating actual coverage information for the target coverage area relative to the base coverage information according to the current operating condition of the communication constellation system, including:
determining an available satellite cell of the target coverage area according to the current operating condition of the communication constellation system;
and generating actual coverage information comprising the available satellite cells and/or the unavailable satellite cells on the basis of the basic coverage information according to the available satellite cells.
8. The method of claim 7, further comprising:
and selecting the target satellite cell for connection or switching according to the determined available satellite cell.
9. The method of claim 7, wherein the actual coverage information comprises one or more of the following information:
actual out-of-service times when the satellite passes through the target coverage area, the actual out-of-service times being selected from the selectable out-of-service times;
an actual shutdown strategy for each orbital plane satellite as it passes through the target coverage area, the actual shutdown strategy selected from the selectable shutdown strategies;
a custom out-of-service time for the satellite to pass through the target coverage area, the custom out-of-service time being different from the selectable out-of-service time;
a custom shutdown strategy for each orbital plane satellite as it passes through the target coverage area, the custom shutdown strategy being different from the selectable shutdown strategy;
information that changes with respect to the base coverage information.
10. The method of claim 7, further comprising:
and receiving the basic coverage information sent by the network side equipment through a downlink data channel.
11. The method according to claim 7, wherein the step of receiving actual coverage information of the communication constellation system in the target coverage area, which is sent by the network side device, comprises:
and receiving the actual coverage information sent by the network side equipment through a downlink broadcast message, or through a self-defined special signaling, or through an existing signaling.
12. An indicating device of satellite coverage information, applied to a network side device, comprising:
a first information obtaining module, configured to obtain basic coverage information of a communication constellation system in a target coverage area, where the basic coverage information is used to indicate a coverage capability of the communication constellation system in the target coverage area;
a second information generating module, configured to generate actual coverage information corresponding to the basic coverage information for the target coverage area according to a current operating condition of the communication constellation system;
the information sending module is used for sending the actual coverage information to a target terminal;
the basic coverage information includes:
a satellite identification;
an optional out-of-service time for the satellite to pass through the target coverage area;
an optional shutdown strategy for each orbital plane satellite as it passes through the target coverage area;
a second information generation module, further configured to:
determining an available satellite cell of the target coverage area according to the current operating condition of the communication constellation system;
and generating actual coverage information comprising the available satellite cells and/or the unavailable satellite cells on the basis of the basic coverage information according to the available satellite cells.
13. A network-side device, comprising: a memory, a processor, a transceiver, and a program stored on the memory and executable on the processor; it is characterized in that the preparation method is characterized in that,
the processor implements the following steps when executing the program:
obtaining basic coverage information of a communication constellation system in a target coverage area, wherein the basic coverage information is used for indicating the coverage capability of the communication constellation system in the target coverage area;
generating actual coverage information relative to the basic coverage information for the target coverage area according to the current operating condition of the communication constellation system;
sending the actual coverage information to a target terminal;
the basic coverage information includes:
a satellite identification;
an optional out-of-service time for the satellite to pass through the target coverage area;
an optional shutdown strategy for each orbital plane satellite as it passes through the target coverage area;
a second information generation module, further configured to:
determining an available satellite cell of the target coverage area according to the current operating condition of the communication constellation system;
and generating actual coverage information comprising the available satellite cells and/or the unavailable satellite cells on the basis of the basic coverage information according to the available satellite cells.
14. An indicating device of satellite coverage information, which is applied to a terminal, is characterized by comprising:
the information receiving module is used for receiving actual coverage information of a communication constellation system in a target coverage area, which is sent by network side equipment;
the information processing module is used for determining an available satellite cell of a target coverage area according to the actual coverage information and pre-obtained basic coverage information of the communication constellation system in the target coverage area;
the basic coverage information is used for indicating the coverage capability of the communication constellation system in the target coverage area, and the actual coverage information is coverage information which is generated for the target coverage area relative to the basic coverage information according to the current operating condition of the communication constellation system;
the basic coverage information includes:
a satellite identification;
an optional out-of-service time for the satellite to pass through the target coverage area;
an optional shutdown strategy for each orbital plane satellite as it passes through the target coverage area;
generating actual coverage information for the target coverage area relative to the base coverage information according to the current operating condition of the communication constellation system, including:
determining an available satellite cell of the target coverage area according to the current operating condition of the communication constellation system;
and generating actual coverage information comprising the available satellite cells and/or the unavailable satellite cells on the basis of the basic coverage information according to the available satellite cells.
15. A terminal, comprising: a memory, a processor, a transceiver, and a program stored on the memory and executable on the processor; it is characterized in that the preparation method is characterized in that,
the processor implements the following steps when executing the program:
receiving actual coverage information of a communication constellation system in a target coverage area, which is sent by network side equipment;
determining an available satellite cell of a target coverage area according to the actual coverage information and pre-obtained basic coverage information of the communication constellation system in the target coverage area;
the basic coverage information is used for indicating the coverage capability of the communication constellation system in the target coverage area, and the actual coverage information is coverage information which is generated for the target coverage area relative to the basic coverage information according to the current operating condition of the communication constellation system;
the basic coverage information includes:
a satellite identification;
an optional out-of-service time for the satellite to pass through the target coverage area;
an optional shutdown strategy for each orbital plane satellite as it passes through the target coverage area;
generating actual coverage information for the target coverage area relative to the base coverage information according to the current operating condition of the communication constellation system, including:
determining an available satellite cell of the target coverage area according to the current operating condition of the communication constellation system;
and generating actual coverage information comprising the available satellite cells and/or the unavailable satellite cells on the basis of the basic coverage information according to the available satellite cells.
16. A computer storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 11.
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| WO2024011440A1 (en) * | 2022-07-13 | 2024-01-18 | Huawei Technologies Co., Ltd. | Location-based scheduling of communications network operations |
| WO2024060025A1 (en) * | 2022-09-20 | 2024-03-28 | 北京小米移动软件有限公司 | Communication management method and apparatus |
| CN116961728B (en) * | 2023-07-27 | 2024-04-12 | 北京和德宇航技术有限公司 | Satellite coverage information determining method and device, electronic equipment and storage medium |
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