CN113765572A - Indication method and equipment - Google Patents
Indication method and equipment Download PDFInfo
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- CN113765572A CN113765572A CN202010498895.1A CN202010498895A CN113765572A CN 113765572 A CN113765572 A CN 113765572A CN 202010498895 A CN202010498895 A CN 202010498895A CN 113765572 A CN113765572 A CN 113765572A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
- H04B7/18595—Arrangements for adapting broadband applications to satellite systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
- H04B7/18597—Arrangements for system physical machines management, i.e. for construction, operations control, administration, maintenance
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Abstract
The embodiment of the invention provides an indication method and equipment, wherein the method comprises the following steps: determining an antenna beam elevation parameter of a terminal, wherein the antenna beam elevation parameter is used for judging whether to trigger a cell switching process between satellites or not by the terminal; and sending the antenna beam elevation angle parameter to the terminal. In the embodiment of the invention, the terminal can compare the antenna beam elevation angle parameter updated by the network side with the antenna beam working pitch angle of the terminal, if the inter-satellite switching requirement is met, the inter-satellite switching process is triggered and started, so that the factors such as satellite beam inclination, terminal position height and the like which are greatly changed can be effectively solved, the influence on the inter-satellite switching judgment technology based on the antenna beam elevation angle is realized, and the reliability of inter-satellite switching is improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to an indicating method and indicating equipment.
Background
In order to achieve global coverage, a low-earth mobile broadband satellite communication system is generally formed by networking a plurality of satellites, and the movement speed of the satellites is high, so that the ground terminal needs to be switched between different satellites quickly and frequently. Because the position relation between the beam direction of the terminal and the satellite needs to be considered when switching among different satellites, the inter-satellite switching mode based on the elevation angle working range of the terminal antenna becomes an effective inter-satellite switching scheme.
When a communication constellation is in operation, in order to avoid interference, a satellite needs to implement beam tilting in some areas or shut down signals of some satellites, so that the geometric structure of an available satellite cell changes, a judgment parameter of inter-satellite switching, namely a threshold value of an antenna working elevation angle, also changes, and further normal implementation of inter-satellite switching is influenced.
Disclosure of Invention
An object of the embodiments of the present invention is to provide an indication method and an indication device, which solve the problem that inter-satellite handover parameters change due to satellite cell beam offset or overlapping coverage, which affects normal implementation of inter-satellite handover.
In a first aspect, an embodiment of the present invention provides an indication method, applied to a network side device, including:
determining an antenna beam elevation parameter of a terminal, wherein the antenna beam elevation parameter is used for judging whether to trigger a cell switching process between satellites or not by the terminal;
and sending the antenna beam elevation angle parameter to the terminal.
Optionally, the determining an antenna beam elevation parameter of the terminal includes:
acquiring one or more of constellation configuration, position information of the terminal, the working state of the current satellite cell where the terminal is located and the working state of an adjacent satellite cell;
and calculating the antenna beam elevation angle parameter of the terminal according to one or more items of the constellation configuration, the position information of the terminal, the working state of the current satellite cell where the terminal is located and the working state of the adjacent satellite cell.
Optionally, the method further comprises:
judging whether the terminal updates the antenna beam elevation angle parameter or not;
if it is determined that the terminal needs to update the antenna beam elevation parameter, performing a step of transmitting the antenna beam elevation parameter to the terminal.
Optionally, the sending the antenna beam elevation parameter to the terminal includes:
sending a broadcast message or a high-level signaling to the terminal, wherein the broadcast message or the high-level signaling comprises: the antenna beam elevation parameter.
Optionally, the broadcast message or the higher layer signaling further includes: other handover parameters for inter-satellite cell handover procedures than the antenna beam elevation parameter.
In a second aspect, an embodiment of the present invention provides an indication method, applied to a terminal, including:
receiving an antenna beam elevation parameter from a network-side device;
and judging whether to carry out cell switching between satellites according to the antenna beam elevation angle parameter.
Optionally, the receiving antenna beam elevation parameter comprises:
receiving a broadcast message or a high-level signaling, wherein the broadcast message or the high-level signaling comprises: the antenna beam elevation parameter.
Optionally, the broadcast message or the higher layer signaling further includes: other handover parameters for inter-satellite cell handover procedures than the antenna beam elevation parameter.
In a third aspect, an embodiment of the present invention provides an indicating apparatus, which is applied to a network side device, and includes:
the terminal comprises a determining module, a judging module and a judging module, wherein the determining module is used for determining an antenna beam elevation angle parameter of the terminal, and the antenna beam elevation angle parameter is used for judging whether to trigger a cell switching process between satellites or not by the terminal;
and the sending module is used for sending the antenna beam elevation angle parameter to the terminal.
In a fourth aspect, an embodiment of the present invention provides a network side device, including: a first transceiver and a first processor;
the first transceiver transmits and receives data under control of the first processor;
the first processor reads a program in a memory to perform the following operations: determining an antenna beam elevation parameter of a terminal, wherein the antenna beam elevation parameter is used for judging whether to trigger a cell switching process between satellites or not by the terminal; and sending the antenna beam elevation angle parameter to the terminal.
In a fifth aspect, an embodiment of the present invention provides an apparatus for indicating, which is applied to a terminal, and is characterized by including:
a receiving module, configured to receive an antenna beam elevation parameter from a network-side device;
and the judging module is used for judging whether to carry out cell switching between satellites according to the antenna beam elevation angle parameter.
In a sixth aspect, an embodiment of the present invention provides a terminal, including: a second transceiver and a second processor;
the second transceiver transmits and receives data under the control of the second processor;
the second processor reads a program in the memory to perform the following operations: receiving an antenna beam elevation parameter from a network-side device; and judging whether to carry out cell switching between satellites according to the antenna beam elevation angle parameter.
In a seventh aspect, an embodiment of the present invention provides a communication device, including: a processor, a memory and a program stored on the memory and executable on the processor, which program, when executed by the processor, performs steps comprising a method as described above.
In an eighth aspect, the embodiment of the present invention provides a readable storage medium, which is characterized in that the readable storage medium stores a program, and the program, when executed by a processor, implements the steps of the method as described above.
In the embodiment of the invention, the terminal can compare the antenna beam elevation angle parameter updated by the network side with the antenna beam working pitch angle of the terminal, if the inter-satellite switching requirement is met, the inter-satellite switching process is triggered and started, so that the factors such as satellite beam inclination, terminal position height and the like which are greatly changed can be effectively solved, the influence on the inter-satellite switching judgment technology based on the antenna beam elevation angle is realized, and the reliability of inter-satellite switching is improved.
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 inter-satellite handoff decision based on terminal antenna beam elevation;
FIG. 2 is a schematic diagram of LEO satellite beam tilt coverage;
FIG. 3 is a flowchart of an indication method of a network side according to an embodiment of the present invention;
FIG. 4 is a second flowchart of an indication method of a network side according to an embodiment of the present invention;
FIG. 5 is a flowchart illustrating a method for indicating a terminal side according to an embodiment of the present invention;
FIG. 6 is a second flowchart of an indication method at the terminal side according to an embodiment of the present invention;
FIG. 7 is a diagram illustrating an apparatus for indication on the network side according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a network-side device in an embodiment of the present invention;
FIG. 9 is a schematic diagram of an apparatus for indication at a terminal side in an embodiment of the present invention;
fig. 10 is a schematic diagram of a terminal in an embodiment of the invention;
fig. 11 is a schematic diagram of a communication device according to an embodiment of the present invention.
Detailed Description
In order to achieve global coverage, low earth orbit satellite communication systems typically require a large number of satellites to form a constellation, and the entire constellation system provides services to users. Since the satellite has a low orbit and runs fast, for example, a satellite with an orbit height of about 1000km, a terminal (alternatively referred to as a ground terminal or a ground satellite terminal) can see the satellite at the same position on the earth for about 10 minutes, and therefore, in order to maintain uninterrupted service, the terminal needs to perform frequent switching among a plurality of satellites.
The inter-satellite switching based on the terminal antenna beam elevation is a simple and effective inter-satellite switching judgment method, the beam directivity of the terminal of the low-orbit mobile broadband satellite communication system is fully utilized, and whether the inter-satellite switching is triggered or not is determined by judging the terminal beam elevation. At present, a terminal provided with an antenna with the diameter of 1 meter works in a 20GHz frequency band, the measurement precision of a working pitch angle of the terminal is about 0.1 degrees, and the precision is enough to support the judgment of whether inter-planet switching is needed or not according to the pitch angle for the terminal with the range of the ground working pitch angle of 20 degrees.
Referring to fig. 1, under the condition of normal coverage of a Low Earth Orbit (LEO) satellite, a satellite beam is perpendicular to the ground, the beam angle is ≧ β, and the inter-satellite cross coverage realizes seamless coverage to the world. Because the antenna beam is narrow and the directivity is strong when the terminal works, the antenna elevation angle of the terminal is lower than the angle alpha in the same satellite cell2And then, a link cannot be established with the cell, so that the pitch angle range of the antenna of the terminal when the antenna works normally is as follows: angle alpha2The working elevation angle is less than or equal to 90 degrees. For the overlapping coverage area existing between satellites, the angle alpha1Represents the working elevation angle of the terminal entering the adjacent satellite overlapping coverage area in the current cell, and the angle alpha2＜∠α1. When alpha2Less than or equal to antenna wave beam pitch angle alpha of terminal1And then, the terminal enters inter-satellite switching judgment and triggers the terminal to start an inter-satellite switching process.
The main flow of the switching mechanism based on the elevation angle of the terminal is as follows:
in the area normally covered by the satellite constellation, after the ground terminal accesses the network, whether the terminal needs to switch between planets is judged according to the included angle between the antenna beam of the terminal and the ground horizontal direction, which is called as the antenna beam pitch angle.
When alpha1And when the pitch angle of the antenna beam of the terminal is less than or equal to 90 degrees, the terminal does not carry out switching judgment among planets.
When alpha2Less than or equal to antenna wave beam pitch angle alpha of terminal1And then, the terminal enters inter-satellite switching judgment and triggers the terminal to start an inter-satellite switching process.
In conclusion, how to aim at alpha1The value of (a) is set and transmitted, which becomes an important problem to be solved. Setting of existing inter-satellite switching judgment parameters (namely & lt alpha & gt)1Of) are generally divided into two categories: presetting before network access and terminal autonomous calculation.
Firstly, presetting a switching elevation angle threshold parameter before accessing the network. The main idea is as follows: the terminal obtains the elevation angle preset value of the inter-satellite switching antenna through parameter presetting before leaving factory or entering network, and then judges whether inter-satellite switching is needed or not according to the value.
And secondly, the terminal autonomously calculates a switching elevation threshold parameter. The main idea is as follows: the terminal calculates the lowest working elevation angle of the terminal at the current satellite cell antenna according to constellation information (satellite available information, ephemeris), beam coverage constraint, terminal position information and the like by combining calculation information, and determines whether the terminal needs to switch between planets according to the parameters.
For the method of presetting the switching elevation angle parameter before network access and the switching elevation angle threshold parameter before network access, the method cannot adapt to the change of the network well under the condition that the constellation geometric structure changes or the satellite beam range changes, and the preset information is easy to expire, which can cause the inter-satellite switching failure.
For the terminal to autonomously calculate the switching elevation angle parameter, on one hand, a large amount of additional information such as ephemeris information, beam range information and the like needs to be obtained from the network side; on the other hand, a large amount of uninterrupted calculation for a long time also increases the burden and the energy consumption overhead of the terminal, and is not beneficial to reducing the cost of the terminal and saving the energy consumption.
In the low-orbit broadband satellite system, a beam tilt scheme is adopted in certain areas to avoid interference, the coverage of satellite beams and the ground is changed, and the elevation angle of antenna beams of a ground terminal is changed. Referring to fig. 2, a schematic diagram comparing a beam tilt satellite with a normal coverage satellite is shown.
From fig. 2, it can be seen that the beam tilts at the LEO satelliteIn this case, the ground coverage is changed, and the beam coverage is extended compared with the normal coverage of the LEO satellite. Under the condition that the satellite beam angle is not changed, the antenna beam elevation angle range of the ground terminal to the tilt beam satellite changes, and the elevation angle alpha serving as the inter-satellite decision threshold parameter1And alpha2It becomes smaller. In a low-orbit mobile broadband satellite communication system, because the ground terminal has narrow antenna beam and strong directivity when working, the change of the inter-satellite switching judgment threshold parameter can influence the normal switching of the terminal.
In order to solve the above problem, in the embodiment of the present invention, the network side may notify the terminal to update the inter-satellite handover decision threshold parameter (for example, notify in a broadcast or signaling manner), and the terminal determines whether to trigger the inter-satellite handover procedure according to the updated threshold parameter, so that the inter-satellite handover trigger threshold can be updated in time under the conditions of constellation configuration change, satellite beam tilt bias, and the like, thereby ensuring handover implementation.
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 some, not all, embodiments of the present invention. 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.
The terms "comprises," "comprising," or any other variation thereof, in the description and claims of this application, 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. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, such as a and/or B, means that three cases, a alone, B alone, and both a and B, exist.
In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
Referring to fig. 3, an embodiment of the present invention provides an indication method, where an execution subject of the method may be a network-side device, such as a satellite (e.g., an LEO satellite), specifically, a satellite providing a communication service for a terminal, and may also be a ground base station device maintaining a communication service with the terminal, where the method includes the specific steps of: step 301 and step 302.
Step 301: determining an antenna beam elevation parameter of a terminal, wherein the antenna beam elevation parameter is used for judging whether to trigger a cell switching process between satellites or not by the terminal;
the terminal antenna beam pitch angle herein refers to: when the terminal antenna works, the beam pointing direction and the horizontal direction of the ground form an included angle, and the beam pitch angle of the terminal antenna may include: angle alpha2Or comprises < alpha >1And alpha2。
It will be appreciated that the antenna beam elevation parameter described above may also be referred to as an angle threshold value that triggers a handover.
Taking a satellite with an orbit height of 600km as an example, the working frequency is 20GHz, when the beam width of the satellite is +/-10 degrees, the elevation angle of a ground user at the center of the beam is 90 degrees, the elevation angle at the edge of the beam is 79 degrees, and the range of the angle threshold value for triggering switching is as follows: the handoff is triggered when the user elevation is less than 79 + 1.
When the satellite beam width is ± 20 °, the ground user is at the beam center elevation angle of 90 °, at the beam edge elevation angle of 68 °, the range of angle thresholds triggering the handoff is: the handoff is triggered when the user elevation is less than 68 + 1. Wherein +1 ° is the switching protection margin.
Step 302: and transmitting the antenna beam elevation angle parameter to the terminal.
It will be appreciated that the purpose of step 302 is to inform the terminal to update the antenna beam elevation parameter.
Mode 1: the network side device sends a broadcast message to the terminal, where the broadcast message may include: an antenna beam elevation parameter.
The network side can carry inter-satellite switching parameter updating data of the local cell and the adjacent cell in Master Information Block (MIB) or System Information Block (SIB) Information, and the terminal extracts an antenna beam elevation angle parameter by receiving the Information to serve as reference data triggered by inter-satellite switching decision.
Mode 2: the network side equipment sends a high-level signaling to the terminal, and the high-level signaling may include: an antenna beam elevation parameter.
(1) The higher layer signaling may be new Radio Resource Control (RRC) signaling.
For example, an update inter-satellite handover decision parameter signaling is added in the RRC signaling, and the signaling carries an antenna beam elevation angle parameter for determining whether inter-satellite handover is triggered.
(2) The higher layer signaling may be existing RRC signaling.
According to the current 5 th generation mobile communication technology (5G) protocol, the terminal sends a measurement report to the network side before cell handover, and when the network side determines that the terminal needs handover, the terminal sends an RRC connection reconfiguration (RRC reconfiguration) instruction to the terminal, and the message may be designed to carry an updated antenna beam elevation parameter for use as a decision reference for the next inter-satellite handover of the terminal.
In a handover mode based on the terminal elevation as a decision parameter, the network side needs to notify other handover information, such as azimuth information and pitch angle information of a target cell, in addition to notifying the terminal of a handover decision threshold parameter. The manner of indicating other handover information by the network side may include the following 2 manners.
Mode 1: and sending the information in the system information.
And carrying other switching parameters of the target cell in the SIB information of the current cell and informing all terminals in the current cell.
Mode 2: RRC signaling indication is utilized for each terminal.
And informing other switching parameters of the target cell for each terminal of the current cell through RRC signaling.
Further, optionally, the broadcast message or the higher layer signaling may further include: other handover parameters for inter-satellite cell handover procedures than the antenna beam elevation parameter, such as handover parameters used for information indicating the target cell.
In the embodiment of the invention, the terminal can compare the antenna beam elevation angle parameter updated by the network side with the antenna beam working pitch angle of the terminal, if the inter-satellite switching requirement is met, the inter-satellite switching process is triggered and started, so that the factors such as satellite beam inclination, terminal position height and the like which are greatly changed can be effectively solved, the influence on the inter-satellite switching judgment technology based on the antenna beam elevation angle is realized, and the reliability of inter-satellite switching is improved.
Referring to fig. 4, an embodiment of the present invention provides an indication method, where an execution subject of the method may be a network-side device, such as a satellite (e.g., a LEO satellite), or a ground base station device that maintains a communication service with a terminal, and the method includes the specific steps of: step 401, step 402 and step 403.
Step 401: calculating an antenna beam elevation angle parameter of the terminal;
for example, the network side device obtains one or more of a constellation configuration, position information of the terminal, a working state of a current satellite cell where the terminal is located, and a working state of an adjacent satellite cell; and calculating the antenna beam elevation angle parameter of the terminal according to one or more items of the constellation configuration, the position information of the terminal, the working state of the current satellite cell where the terminal is located and the working state of the adjacent satellite cell.
The constellation configuration is a Walker constellation configuration, but is not limited thereto.
Wherein, operating condition includes: beam bias, beam off conditions, etc.
Step 402: judging whether the terminal updates the antenna beam elevation angle parameter or not; if the terminal needs to update the antenna beam elevation parameter, executing step 403; otherwise, returning to step 401;
step 403: and transmitting the antenna beam elevation angle parameter to the terminal.
In the embodiment of the invention, the terminal can compare the antenna beam elevation angle parameter updated by the network side with the antenna beam working pitch angle of the terminal, if the inter-satellite switching requirement is met, the inter-satellite switching process is triggered and started, so that the factors such as satellite beam inclination, terminal position height and the like which are greatly changed can be effectively solved, the influence on the inter-satellite switching judgment technology based on the antenna beam elevation angle is realized, and the reliability of inter-satellite switching is improved.
Referring to fig. 5, an embodiment of the present invention provides an indication method, where an execution subject of the method is a terminal, and specific steps include step 501 and step 502.
Step 501: receiving an antenna beam elevation parameter from a network-side device;
mode 1: receiving a broadcast message from a network side device, wherein the broadcast message may include: an antenna beam elevation parameter.
The network side can carry inter-satellite switching parameter updating data of the local cell and the adjacent cell in Master Information Block (MIB) or System Information Block (SIB) Information, and the terminal extracts an antenna beam elevation angle parameter by receiving the Information to serve as reference data triggered by inter-satellite switching decision.
Mode 2: receiving a higher layer signaling from a network side device, wherein the higher layer signaling may include: an antenna beam elevation parameter.
(1) The higher layer signaling may be new Radio Resource Control (RRC) signaling.
For example, an update inter-satellite handover decision parameter signaling is added in the RRC signaling, and the signaling carries an antenna beam elevation angle parameter for determining whether inter-satellite handover is triggered.
(2) The higher layer signaling may be existing RRC signaling.
According to the current 5 th generation mobile communication technology (5G) protocol, the terminal sends a measurement report to the network side before cell handover, and when the network side determines that the terminal needs handover, the terminal sends an RRC connection reconfiguration (RRC reconfiguration) instruction to the terminal, and the message may be designed to carry an updated antenna beam elevation parameter for use as a decision reference for the next inter-satellite handover of the terminal.
In a handover mode based on the terminal elevation as a decision parameter, the network side needs to notify other handover information, such as azimuth information and pitch angle information of a target cell, in addition to notifying the terminal of a handover decision threshold parameter. The manner of indicating other handover information by the network side may include the following 2 manners.
Mode 1: and sending the information in the system information.
And carrying other switching parameters of the target cell in the SIB information of the current cell and informing all terminals in the current cell.
Mode 2: RRC signaling indication is utilized for each terminal.
And informing other switching parameters of the target cell for each terminal of the current cell through RRC signaling.
Further, optionally, the broadcast message or the higher layer signaling may further include: other handover parameters for inter-satellite cell handover procedures than the antenna beam elevation parameter, such as handover parameters used for information indicating the target cell.
Step 502: and judging whether to carry out cell switching between satellites according to the antenna beam elevation angle parameter.
In the embodiment of the invention, the terminal can compare the antenna beam elevation angle parameter updated by the network side with the antenna beam working pitch angle of the terminal, if the inter-satellite switching requirement is met, the inter-satellite switching process is triggered and started, so that the factors such as satellite beam inclination, terminal position height and the like which are greatly changed can be effectively solved, the influence on the inter-satellite switching judgment technology based on the antenna beam elevation angle is realized, and the reliability of inter-satellite switching is improved.
Referring to fig. 6, an embodiment of the present invention provides an indication method, where an execution subject of the method is a terminal, and specific steps include step 601-step 605.
Step 601: the terminal is accessed to a satellite network;
for example, after the terminal accesses the satellite network, the terminal may periodically report terminal information, such as location information, to the network side.
Step 602: the terminal monitors whether the network side updates the antenna beam elevation parameter or not; if yes, go to step 603; otherwise, go to step 604;
step 603: updating the antenna beam elevation parameter, and then performing step 604;
step 604: judging whether cell switching between satellites is carried out, if so, executing step 605; otherwise, return to step 602;
for example, the terminal obtains inter-satellite switching decision parameter update information of the current cell through network side broadcast messages, MIB or SIB, and determines whether to trigger an inter-satellite switching process by determining a pitch angle value of a terminal working antenna using the information.
For another example, the terminal obtains inter-satellite handover decision parameter update information of the current cell through RRC signaling sent by the network side, and determines whether to trigger an inter-satellite handover procedure by using the information to determine a pitch angle value of a working antenna of the terminal.
Step 605: and starting the inter-satellite cell switching process.
For example, the terminal obtains other handover parameters of the target cell, such as information of an azimuth angle and a pitch angle of the target cell, through system information or RRC signaling sent by the network side.
In the embodiment of the invention, the terminal can compare the antenna beam elevation angle parameter updated by the network side with the antenna beam working pitch angle of the terminal, if the inter-satellite switching requirement is met, the inter-satellite switching process is triggered and started, so that the factors such as satellite beam inclination, terminal position height and the like which are greatly changed can be effectively solved, the influence on the inter-satellite switching judgment technology based on the antenna beam elevation angle is realized, and the reliability of inter-satellite switching is improved.
Referring to fig. 7, an apparatus for indicating is provided in an embodiment of the present invention, and is applied to a network side device, where the apparatus 700 includes:
a determining module 701, configured to determine an antenna beam elevation angle parameter of a terminal, where the antenna beam elevation angle parameter is used by the terminal to determine whether to trigger an inter-satellite cell handover procedure;
a sending module 702, configured to send the antenna beam elevation angle parameter to the terminal.
In some embodiments, the determining module 701 is further configured to: acquiring one or more of constellation configuration, position information of the terminal, the working state of the current satellite cell where the terminal is located and the working state of an adjacent satellite cell; and calculating the antenna beam elevation angle parameter of the terminal according to one or more items of the constellation configuration, the position information of the terminal, the working state of the current satellite cell where the terminal is located and the working state of the adjacent satellite cell.
In some embodiments, the apparatus 700 further comprises:
the judging module is used for judging whether the terminal updates the antenna beam elevation angle parameter or not; if it is determined that the terminal needs to update the antenna beam elevation parameter, performing a step of transmitting the antenna beam elevation parameter to the terminal.
In some embodiments, the sending module 702 is further configured to: sending a broadcast message or a high-level signaling to the terminal, wherein the broadcast message or the high-level signaling comprises: the antenna beam elevation parameter.
In some embodiments, the broadcast message or higher layer signaling further comprises: other handover parameters for inter-satellite cell handover procedures than the antenna beam elevation parameter.
The indicating apparatus provided in the embodiment of the present invention may execute the method embodiment shown in fig. 3 or 4, which has similar implementation principle and technical effect, and this embodiment is not described herein again.
Referring to fig. 8, an embodiment of the present invention provides a network-side device, where the network-side device 800 includes: a first transceiver 801 and a first processor 802;
the first transceiver 801 sends and receives data under the control of the first processor 802;
the first processor 802 reads a program in the memory to perform the following operations: determining an antenna beam elevation parameter of a terminal, wherein the antenna beam elevation parameter is used for judging whether to trigger a cell switching process between satellites or not by the terminal; and sending the antenna beam elevation angle parameter to the terminal.
In some embodiments, the first processor 802 reads a program in memory to perform the following operations: acquiring one or more of constellation configuration, position information of the terminal, the working state of the current satellite cell where the terminal is located and the working state of an adjacent satellite cell; and calculating the antenna beam elevation angle parameter of the terminal according to one or more items of the constellation configuration, the position information of the terminal, the working state of the current satellite cell where the terminal is located and the working state of the adjacent satellite cell.
In some embodiments, the first processor 802 reads a program in memory to perform the following operations: judging whether the terminal updates the antenna beam elevation angle parameter or not; if it is determined that the terminal needs to update the antenna beam elevation parameter, performing a step of transmitting the antenna beam elevation parameter to the terminal.
In some embodiments, the first processor 802 reads a program in memory to perform the following operations: sending a broadcast message or a high-level signaling to the terminal, wherein the broadcast message or the high-level signaling comprises: the antenna beam elevation parameter.
In some embodiments, the broadcast message or higher layer signaling further comprises: other handover parameters for inter-satellite cell handover procedures than the antenna beam elevation parameter.
The network side device provided in the embodiment of the present invention may execute the method embodiment shown in fig. 3 or 4, which has similar implementation principle and technical effect, and this embodiment is not described herein again.
Referring to fig. 9, an apparatus for indicating according to an embodiment of the present invention is applied to a terminal, where the apparatus 900 includes:
a receiving module 901, configured to receive an antenna beam elevation parameter from a network-side device;
a judging module 902, configured to judge whether to perform inter-satellite cell handover according to the antenna beam elevation parameter.
In some embodiments, the receiving module 901 is further configured to: receiving a broadcast message or a high-level signaling, wherein the broadcast message or the high-level signaling comprises: the antenna beam elevation parameter.
Optionally, the broadcast message or the higher layer signaling further includes: other handover parameters for inter-satellite cell handover procedures than the antenna beam elevation parameter.
The indicating apparatus provided in the embodiment of the present invention may execute the method embodiments shown in fig. 5 or 6, which have similar implementation principles and technical effects, and this embodiment is not described herein again.
Referring to fig. 10, an embodiment of the present invention provides a terminal, where the terminal 1000 includes: a second transceiver 1001 and a second processor 1002;
the second transceiver 1001 transmits and receives data under the control of the second processor 1002;
the second processor 1002 reads a program in the memory to perform the following operations: receiving an antenna beam elevation parameter from a network-side device; and judging whether to carry out cell switching between satellites according to the antenna beam elevation angle parameter.
In some embodiments, the second processor 1002 reads a program in a memory to perform the following operations: receiving a broadcast message or a high-level signaling, wherein the broadcast message or the high-level signaling comprises: the antenna beam elevation parameter.
Optionally, the broadcast message or the higher layer signaling further includes: other handover parameters for inter-satellite cell handover procedures than the antenna beam elevation parameter.
The terminal provided in the embodiment of the present invention may execute the method embodiment shown in fig. 5 or 6, which has similar implementation principles and technical effects, and this embodiment is not described herein again.
Referring to fig. 11, fig. 11 is a structural diagram of a communication device applied in the embodiment of the present invention, and as shown in fig. 11, the communication device 1100 includes: a processor 1101, a transceiver 1102, a memory 1103, and a bus interface, wherein:
in one embodiment of the invention, the communication device 1100 further comprises: a program stored on the memory 1103 and executable on the processor 1101, the program, when executed by the processor 1101, implementing the steps in the embodiments shown in fig. 3-6.
In fig. 11, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1101, and various circuits, represented by memory 1103, 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 1102 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium, it being understood that the transceiver 1102 is an optional component.
The processor 1101 is responsible for managing the bus architecture and general processing, and the memory 1103 may store data used by the processor 1101 in performing operations.
The communication device provided in the embodiment of the present invention may execute the method embodiments shown in fig. 3 to fig. 6, which implement the principle and the technical effect similar to each other, and this embodiment is not described herein again.
The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or in software instructions executed by a processor. The software instructions may consist of corresponding software modules that may be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, a removable hard disk, a compact disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. Additionally, the ASIC may reside in a core network interface device. Of course, the processor and the storage medium may reside as discrete components in a core network interface device.
Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in this invention may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a readable medium. Readable media includes computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.
Claims (14)
1. An indication method is applied to a network side device, and is characterized by comprising the following steps:
determining an antenna beam elevation parameter of a terminal, wherein the antenna beam elevation parameter is used for judging whether to trigger a cell switching process between satellites or not by the terminal;
and sending the antenna beam elevation angle parameter to the terminal.
2. The method of claim 1, wherein the determining antenna beam elevation parameters for the terminal comprises:
acquiring one or more of constellation configuration, position information of the terminal, the working state of the current satellite cell where the terminal is located and the working state of an adjacent satellite cell;
and calculating the antenna beam elevation angle parameter of the terminal according to one or more items of the constellation configuration, the position information of the terminal, the working state of the current satellite cell where the terminal is located and the working state of the adjacent satellite cell.
3. The method of claim 1, further comprising:
judging whether the terminal updates the antenna beam elevation angle parameter or not;
if it is determined that the terminal needs to update the antenna beam elevation parameter, performing a step of transmitting the antenna beam elevation parameter to the terminal.
4. The method according to claim 1 or 3, wherein said transmitting the antenna beam elevation parameter to the terminal comprises:
sending a broadcast message or a high-level signaling to the terminal, wherein the broadcast message or the high-level signaling comprises: the antenna beam elevation parameter.
5. The method of claim 4, wherein the broadcast message or higher layer signaling further comprises: other handover parameters for inter-satellite cell handover procedures than the antenna beam elevation parameter.
6. An indication method applied to a terminal is characterized by comprising the following steps:
receiving an antenna beam elevation parameter from a network-side device;
and judging whether to carry out cell switching between satellites according to the antenna beam elevation angle parameter.
7. The method of claim 6, wherein the receive antenna beam elevation parameter comprises:
receiving a broadcast message or a high-level signaling, wherein the broadcast message or the high-level signaling comprises: the antenna beam elevation parameter.
8. The method of claim 7, wherein the broadcast message or higher layer signaling further comprises: other handover parameters for inter-satellite cell handover procedures than the antenna beam elevation parameter.
9. An indicating apparatus, applied to a network-side device, includes:
the terminal comprises a determining module, a judging module and a judging module, wherein the determining module is used for determining an antenna beam elevation angle parameter of the terminal, and the antenna beam elevation angle parameter is used for judging whether to trigger a cell switching process between satellites or not by the terminal;
and the sending module is used for sending the antenna beam elevation angle parameter to the terminal.
10. A network-side device, comprising: a first transceiver and a first processor;
the first transceiver transmits and receives data under control of the first processor;
the first processor reads a program in a memory to perform the following operations: determining an antenna beam elevation parameter of a terminal, wherein the antenna beam elevation parameter is used for judging whether to trigger a cell switching process between satellites or not by the terminal; and sending the antenna beam elevation angle parameter to the terminal.
11. An indicating device applied to a terminal, comprising:
a receiving module, configured to receive an antenna beam elevation parameter from a network-side device;
and the judging module is used for judging whether to carry out cell switching between satellites according to the antenna beam elevation angle parameter.
12. A terminal, comprising: a second transceiver and a second processor;
the second transceiver transmits and receives data under the control of the second processor;
the second processor reads a program in the memory to perform the following operations: receiving an antenna beam elevation parameter from a network-side device; and judging whether to carry out cell switching between satellites according to the antenna beam elevation angle parameter.
13. A communication device, comprising: processor, memory and program stored on the memory and executable on the processor, which when executed by the processor implements steps comprising the method of any one of claims 1 to 8.
14. A readable storage medium, characterized in that it has stored thereon a program which, when being executed by a processor, carries out steps comprising the method according to any one of claims 1 to 8.
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