CN113765572B - Indication method and device - Google Patents
Indication method and device Download PDFInfo
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- CN113765572B CN113765572B CN202010498895.1A CN202010498895A CN113765572B CN 113765572 B CN113765572 B CN 113765572B CN 202010498895 A CN202010498895 A CN 202010498895A CN 113765572 B CN113765572 B CN 113765572B
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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
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 by the terminal; and sending the antenna beam elevation parameters 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 working pitch angle of the antenna beam, if the inter-satellite switching requirement is met, the inter-satellite switching process is triggered and started, the influence on the inter-satellite switching judgment technology based on the antenna beam elevation angle caused by overlarge changes of satellite beam inclination, terminal position height and the like can be effectively solved, 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 indication method and indication equipment.
Background
In order to achieve global coverage, a low-orbit mobile broadband satellite communication system is generally formed by networking a plurality of satellites, and the satellite movement speed is high, so that a ground terminal needs to be rapidly and frequently switched among different satellites. 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 working range of the terminal antenna becomes an effective inter-satellite switching scheme.
When the communication constellation operates, in order to avoid interference, the satellite needs to implement beam inclination in certain areas or shut down signals of certain satellites, so that the geometric structure of available satellite cells is changed, and the judgment parameter of inter-satellite switching, namely the threshold value of the working elevation angle of an antenna, is also changed, thereby influencing normal implementation of the inter-satellite switching.
Disclosure of Invention
An object of an embodiment of the present invention is to provide an indication method and apparatus, which solve the problem that inter-satellite handover normal implementation is affected due to inter-satellite handover parameters change caused by satellite cell beam bias or overlapping coverage.
In a first aspect, an embodiment of the present invention provides an indication method, which is 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 by the terminal;
and sending the antenna beam elevation parameters to the terminal.
Optionally, the determining the antenna beam elevation parameter of the terminal includes:
acquiring one or more of constellation configuration, position information of the terminal, working state of a current satellite cell where the terminal is located and working state of an adjacent satellite cell;
and calculating the antenna beam elevation angle parameter of the terminal according to one or more 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 parameters or not;
and if the terminal is judged to need to update the antenna beam elevation parameter, the step of sending the antenna beam elevation parameter to the terminal is executed.
Optionally, the sending the antenna beam elevation parameter to the terminal includes:
and sending a broadcast message or a high-layer signaling to the terminal, wherein the broadcast message or the high-layer signaling comprises the following components: the antenna beam elevation parameters.
Optionally, the broadcast message or the higher layer signaling further includes: and other switching parameters for the inter-satellite cell switching process besides the antenna beam elevation parameters.
In a second aspect, an embodiment of the present invention provides an indication method, which is applied to a terminal, including:
receiving antenna beam elevation parameters from network side equipment;
and judging whether to switch the cells among satellites according to the antenna beam elevation angle parameters.
Optionally, the receiving antenna beam elevation parameter includes:
receiving a broadcast message or a higher layer signaling, wherein the broadcast message or the higher layer signaling comprises: the antenna beam elevation parameters.
Optionally, the broadcast message or the higher layer signaling further includes: and other switching parameters for the inter-satellite cell switching process besides the antenna beam elevation parameters.
In a third aspect, an embodiment of the present invention provides an apparatus for indicating, which is applied to a network side device, including:
the system comprises a determining module, a determining module and a processing module, wherein the determining module is used for determining antenna beam elevation parameters of a terminal, and the antenna beam elevation parameters are used for judging whether to trigger a cell switching process between satellites 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 the control of the first processor;
the first processor reads the 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 by the terminal; and sending the antenna beam elevation parameters to the terminal.
In a fifth aspect, an embodiment of the present invention provides an indicating apparatus, applied to a terminal, including:
the receiving module is used for receiving antenna beam elevation parameters from the network side equipment;
and the judging module is used for judging whether the inter-satellite cell switching is carried out or not according to the antenna beam elevation angle parameters.
In a sixth aspect, an embodiment of the present invention provides a terminal, including: a second transceiver and a second processor;
the second transceiver transmitting and receiving data under the control of the second processor;
the second processor reads the program in the memory to perform the following operations: receiving antenna beam elevation parameters from network side equipment; and judging whether to switch the cells among satellites according to the antenna beam elevation angle parameters.
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 when executed by the processor implements steps comprising the method as described above.
In an eighth aspect, an embodiment of the present invention provides a readable storage medium, wherein the readable storage medium has a program stored thereon, which when executed by a processor, implements steps comprising a 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 working pitch angle of the antenna beam, if the inter-satellite switching requirement is met, the inter-satellite switching process is triggered and started, the influence on the inter-satellite switching judgment technology based on the antenna beam elevation angle caused by overlarge changes of satellite beam inclination, terminal position height and the like can be effectively solved, 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 designate like parts throughout the figures. In the drawings:
FIG. 1 is a schematic diagram of an inter-satellite handoff decision based on elevation of a terminal antenna beam;
FIG. 2 is a schematic view of LEO satellite beam tilt coverage;
FIG. 3 is a flowchart of an indication method at a network side according to an embodiment of the present invention;
FIG. 4 is a second flowchart of an indication method at the network side according to the embodiment of the present invention;
fig. 5 is one of flowcharts of an indication method at a terminal side in an embodiment of the present invention;
FIG. 6 is a second flowchart of a terminal side indication method according to an embodiment of the present invention;
fig. 7 is a schematic diagram of an apparatus for indicating a network side in 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 indicating a terminal side in an embodiment of the present invention;
fig. 10 is a schematic diagram of a terminal in an embodiment of the present 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 orbit satellite communication systems typically require a constellation of a large number of satellites, with the entire constellation system serving users. Since satellites are low in orbit and fast in operation, and satellites with an orbit height of about 1000km are taken as an example, a terminal (or called a ground terminal or a ground satellite terminal) has a time for which the satellites are visible at the same position on the earth for about 10 minutes, the terminal needs to perform frequent handover among a plurality of satellites in order to maintain uninterrupted service.
The inter-satellite switching based on the elevation angle of the terminal antenna beam is a simple and effective inter-satellite switching judging method, fully utilizes the beam directivity of the low-orbit mobile broadband satellite communication system terminal, and decides whether to trigger the inter-satellite switching by judging the elevation angle of the terminal beam. At present, a terminal provided with a 1-meter caliber antenna works in a 20GHz frequency band, the measurement precision of the terminal on a working elevation angle is about 0.1 degrees, and the precision is enough to support whether the terminal needs to switch among planets according to the elevation angle judgment for the terminal with the 20-degree range of the ground working elevation angle.
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 seamless coverage of the whole world is realized by cross coverage between satellites. The antenna has narrow beam and strong directivity when the terminal works, and the antenna is in the same oneIn satellite cell, antenna elevation angle of terminal is lower than alpha 2 When the antenna works normally, the pitch angle range of the antenna of the terminal is as follows: angle alpha 2 The working elevation angle is more than or equal to 90 degrees. For the overlapping coverage area between satellites, the angle alpha 1 Indicating the working elevation angle of the terminal entering the adjacent star overlapped coverage area in the current cell, < alpha- 2 ＜∠α 1 . When +.alpha 2 Antenna beam pitch angle alpha less than or equal to terminal 1 And when the terminal performs inter-satellite switching judgment, triggering the terminal to start an inter-satellite switching flow.
The switching mechanism based on the elevation angle of the terminal mainly comprises the following steps:
● And after the ground terminal is accessed to the network in the normal coverage area of the satellite constellation, judging whether the terminal needs to perform inter-satellite switching according to the included angle between the antenna beam of the terminal and the ground horizontal direction, which is called an antenna beam pitch angle.
● When +.alpha 1 And when the antenna beam pitch angle of the terminal is less than or equal to 90 degrees, the terminal does not perform inter-satellite switching judgment.
Beta. Alpha 2 Antenna beam pitch angle alpha less than or equal to terminal 1 And when the terminal makes an inter-planet handover decision,
triggering the terminal to start the inter-satellite switching flow.
In conclusion, how to treat +.alpha 1 The value of (2) is set and transmitted, which becomes an important problem to be solved. The existing setting of inter-satellite handover decision parameters (i.e. < alpha- 1 Is generally divided into two types: presetting before network access and autonomously calculating by a terminal.
1. The threshold parameter of the switching elevation angle is preset before network access. The main idea is as follows: the terminal obtains the elevation angle preset value of the inter-satellite switching antenna through parameter preset before leaving a factory or before entering the network, and then judges whether the inter-satellite switching is needed according to the value.
2. And 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, and decides whether the terminal needs to perform inter-satellite switching according to the parameter.
For the pre-set switching elevation angle parameter before network access, the pre-set switching elevation angle threshold parameter method before network access cannot be well adapted to the change of the network under the condition that the constellation geometric structure is changed or the satellite beam range is changed, and the pre-set information is easy to expire, so that the inter-satellite switching failure can be caused.
For the terminal to autonomously calculate the switching elevation parameters, on one hand, a great amount of additional information such as ephemeris information, beam range information and the like needs to be obtained from a network side; on the other hand, a large amount of uninterrupted calculation for a long time also increases the burden and the energy consumption expenditure of the terminal, which is unfavorable for the reduction of the cost and the saving of the energy consumption of the terminal.
In a low-orbit broadband satellite system, a beam tilting scheme is adopted in some areas to avoid interference, and at the moment, the satellite beam and the ground coverage range change, and the elevation angle of an antenna beam of a ground terminal also changes. Referring to fig. 2, a schematic diagram of a beam tilt satellite versus a normal coverage satellite is shown.
As can be seen from fig. 2, in the case of the LEO satellite beam tilt, the ground coverage is changed, and the beam coverage is elongated as compared with the case of the LEO satellite normal coverage. Under the condition that the satellite beam angle beta is unchanged, the elevation angle alpha of the ground terminal to the antenna beam of the inclined beam satellite is changed and is used as the inter-satellite decision threshold parameter 1 Sum +.alpha. 2 Will become smaller. In a low-orbit mobile broadband satellite communication system, because the antenna beam is narrow and the directivity is strong when the ground terminal works, the normal switching of the terminal can be influenced by the change of the inter-satellite switching decision threshold parameter.
In order to solve the above problems, 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 through a broadcast or signaling form), 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 may be updated in time under the conditions of constellation configuration change, satellite beam tilt bias, and the like, thereby ensuring handover implementation.
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terms "comprises," "comprising," or any other variation 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 or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means at least one of the connected objects, e.g., a and/or B, meaning that it includes a single a, a single B, and that there are three cases of a and B.
In embodiments of the invention, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.
Referring to fig. 3, an embodiment of the present invention provides an indication method, where an execution body of the method may be a network side device, such as a satellite (e.g., LEO satellite), specifically, a satellite that provides a communication service for a terminal, or a ground base station device that maintains a communication service with the terminal, and the specific steps include: step 301 and step 302.
Step 301: determining antenna beam elevation parameters of the terminal, wherein the antenna beam elevation parameters are used for judging whether to trigger a cell switching process between satellites by the terminal;
the term terminal antenna beam pitch angle herein refers to: the terminal antenna works with the beam pointing direction and the ground horizontal direction included angle, the terminalThe antenna beam pitch angle may include: angle alpha 2 Or include +.alpha. 1 Sum +.alpha. 2 。
It will be appreciated that the antenna beam elevation parameters described above may also be referred to as the angle threshold value for triggering a handover.
Taking 600km orbital height satellite as an example, the working frequency is 20GHz, when the satellite beam width is +/-10 degrees, the elevation angle of a ground user at the beam center is 90 degrees, the elevation angle at the beam edge is 79 degrees, and the angle threshold range for triggering switching is: the switch is triggered when the user elevation angle is less than 79 + 1.
When the satellite beam width is +/-20 degrees, the elevation angle of a ground user at the beam center is 90 degrees, the elevation angle at the beam edge is 68 degrees, and the angle threshold range of triggering switching is: the switch is triggered when the user elevation angle is less than 68 + 1. Wherein +1° is the switching protection margin.
Step 302: and sending the antenna beam elevation parameters to the terminal.
It will be appreciated that the purpose of step 302 is to inform the terminal to update the antenna beam elevation parameters.
Mode 1: the network side device sends a broadcast message to the terminal, and the broadcast message may include: antenna beam elevation parameters.
The network side can carry the inter-satellite switching parameter updating data of the cell and the adjacent cell in the main information block (Master Information Block, MIB) or the system information block (System Information Block, SIB) information, and the terminal extracts the antenna beam elevation parameter by receiving the information to be used as the reference data for triggering the inter-satellite switching judgment.
Mode 2: the network side device sends a higher layer signaling to the terminal, and the higher layer signaling may include: antenna beam elevation parameters.
(1) The higher layer signaling may be newly added radio resource control (Radio Resource Control, RRC) signaling.
For example, a new signaling for updating the inter-satellite switching decision parameter is added in the RRC signaling, and the signaling carries the antenna beam elevation parameter for determining whether the inter-satellite switching is triggered.
(2) The higher layer signaling may be existing RRC signaling.
According to the current 5 th generation mobile communication technology (5G) protocol, before cell switching, the terminal will send a measurement report to the network side, and when the network side determines that the terminal needs to switch, it will send an RRC connection reconfiguration (RRC Reconfigration) instruction to the terminal, and the message can be designed to carry an updated antenna beam elevation parameter for the decision reference of the next inter-satellite switching of the terminal.
In the switching mode based on the elevation angle of the terminal as the decision parameter, the network side needs to notify other switching information, such as azimuth information, pitch angle information and the like of the target cell, besides notifying the terminal of the switching decision threshold parameter. The manner in which the network side indicates other handover information may include the following 2 manners.
Mode 1: and transmitted 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: an RRC signaling indication is utilized for each terminal.
For each terminal of the current cell, other handover parameters of the target cell are notified by RRC signaling.
Further optionally, the broadcast message or the higher layer signaling may further include: other handoff parameters for inter-satellite cell handoff procedures besides the antenna beam elevation parameters, such as handoff parameters used to indicate information of 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 working pitch angle of the antenna beam, if the inter-satellite switching requirement is met, the inter-satellite switching process is triggered and started, the influence on the inter-satellite switching judgment technology based on the antenna beam elevation angle caused by overlarge changes of satellite beam inclination, terminal position height and the like can be effectively solved, 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 body of the method may be a network side device, such as a satellite (e.g., LEO satellite), and the specific steps include: step 401, step 402 and step 403.
Step 401: calculating the antenna beam elevation parameters of the terminal;
for example, the network side device acquires one or more of 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 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, the operating condition includes: beam bias, beam off condition, etc.
Step 402: judging whether the terminal updates the antenna beam elevation parameters; if it is determined that the terminal needs to update the antenna beam elevation parameter, step 403 is executed; otherwise, returning to step 401;
step 403: and sending the antenna beam elevation parameters 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 working pitch angle of the antenna beam, if the inter-satellite switching requirement is met, the inter-satellite switching process is triggered and started, the influence on the inter-satellite switching judgment technology based on the antenna beam elevation angle caused by overlarge changes of satellite beam inclination, terminal position height and the like can be effectively solved, 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 a step 501 and a step 502.
Step 501: receiving antenna beam elevation parameters from network side equipment;
mode 1: receiving a broadcast message from a network side device, wherein the broadcast message may include: antenna beam elevation parameters.
The network side can carry the inter-satellite switching parameter updating data of the cell and the adjacent cell in the main information block (Master Information Block, MIB) or the system information block (System Information Block, SIB) information, and the terminal extracts the antenna beam elevation parameter by receiving the information to be used as the reference data for triggering the inter-satellite switching judgment.
Mode 2: receiving higher layer signaling from the network side device, wherein the higher layer signaling may include: antenna beam elevation parameters.
(1) The higher layer signaling may be newly added radio resource control (Radio Resource Control, RRC) signaling.
For example, a new signaling for updating the inter-satellite switching decision parameter is added in the RRC signaling, and the signaling carries the antenna beam elevation parameter for determining whether the inter-satellite switching is triggered.
(2) The higher layer signaling may be existing RRC signaling.
According to the current 5 th generation mobile communication technology (5G) protocol, before cell switching, the terminal will send a measurement report to the network side, and when the network side determines that the terminal needs to switch, it will send an RRC connection reconfiguration (RRC Reconfigration) instruction to the terminal, and the message can be designed to carry an updated antenna beam elevation parameter for the decision reference of the next inter-satellite switching of the terminal.
In the switching mode based on the elevation angle of the terminal as the decision parameter, the network side needs to notify other switching information, such as azimuth information, pitch angle information and the like of the target cell, besides notifying the terminal of the switching decision threshold parameter. The manner in which the network side indicates other handover information may include the following 2 manners.
Mode 1: and transmitted 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: an RRC signaling indication is utilized for each terminal.
For each terminal of the current cell, other handover parameters of the target cell are notified by RRC signaling.
Further optionally, the broadcast message or the higher layer signaling may further include: other handoff parameters for inter-satellite cell handoff procedures besides the antenna beam elevation parameters, such as handoff parameters used to indicate information of the target cell.
Step 502: and judging whether to switch the cells among satellites according to the antenna beam elevation angle parameters.
In the embodiment of the invention, the terminal can compare the antenna beam elevation angle parameter updated by the network side with the working pitch angle of the antenna beam, if the inter-satellite switching requirement is met, the inter-satellite switching process is triggered and started, the influence on the inter-satellite switching judgment technology based on the antenna beam elevation angle caused by overlarge changes of satellite beam inclination, terminal position height and the like can be effectively solved, 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 steps 601 to 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 parameters; if yes, go to step 603; otherwise, go to step 604;
step 603: updating the antenna beam elevation parameters, and then performing step 604;
step 604: judging whether the inter-satellite cell handover is performed, if yes, executing step 605; otherwise, returning to step 602;
for example, the terminal obtains the update information of the inter-satellite handover decision parameter of the current cell through the network side broadcast message, the MIB or the SIB, and judges the pitch angle value of the working antenna of the terminal by using the update information to determine whether the inter-satellite handover process needs to be triggered.
For another example, the terminal obtains update information of the inter-satellite handover decision parameter of the current cell through the RRC signaling sent by the network side, and determines whether to trigger the inter-satellite handover procedure by using the update information to determine the pitch angle value of the working antenna of the terminal.
Step 605: and starting the inter-satellite cell switching process.
For example, the terminal obtains other switching parameters of the target cell, such as information of azimuth angle, pitch angle, and the like of the target cell through system information or RRC signaling and the like 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 working pitch angle of the antenna beam, if the inter-satellite switching requirement is met, the inter-satellite switching process is triggered and started, the influence on the inter-satellite switching judgment technology based on the antenna beam elevation angle caused by overlarge changes of satellite beam inclination, terminal position height and the like can be effectively solved, and the reliability of inter-satellite switching is improved.
Referring to fig. 7, an embodiment of the present invention provides an indicating apparatus, applied to a network side device, where the apparatus 700 includes:
a determining module 701, configured to determine an antenna beam elevation parameter of a terminal, where the antenna beam elevation parameter is used by the terminal to determine whether to trigger an inter-satellite cell handover procedure;
and the sending module 702 is configured to send the antenna beam elevation parameter to the terminal.
In some implementations, the determining module 701 is further to: acquiring one or more of constellation configuration, position information of the terminal, working state of a current satellite cell where the terminal is located and working state of an adjacent satellite cell; and calculating the antenna beam elevation angle parameter of the terminal according to one or more 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 parameters; and if the terminal is judged to need to update the antenna beam elevation parameter, the step of sending the antenna beam elevation parameter to the terminal is executed.
In some implementations, the sending module 702 is further to: and sending a broadcast message or a high-layer signaling to the terminal, wherein the broadcast message or the high-layer signaling comprises the following components: the antenna beam elevation parameters.
In some embodiments, the broadcast message or higher layer signaling further comprises: and other switching parameters for the inter-satellite cell switching process besides the antenna beam elevation parameters.
The device for indicating provided by the embodiment of the present invention may execute the method embodiment shown in fig. 3 or 4, and its implementation principle and technical effects are similar, and this embodiment will not be repeated here.
Referring to fig. 8, an embodiment of the present invention provides a network side device 800, including: a first transceiver 801 and a first processor 802;
the first transceiver 801 transmits and receives data under the control of the first processor 802;
the first processor 802 reads the 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 by the terminal; and sending the antenna beam elevation parameters to the terminal.
In some embodiments, the first processor 802 reads the program in memory to perform the following operations: acquiring one or more of constellation configuration, position information of the terminal, working state of a current satellite cell where the terminal is located and working state of an adjacent satellite cell; and calculating the antenna beam elevation angle parameter of the terminal according to one or more 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 the program in memory to perform the following operations: judging whether the terminal updates the antenna beam elevation parameters or not; and if the terminal is judged to need to update the antenna beam elevation parameter, the step of sending the antenna beam elevation parameter to the terminal is executed.
In some embodiments, the first processor 802 reads the program in memory to perform the following operations: and sending a broadcast message or a high-layer signaling to the terminal, wherein the broadcast message or the high-layer signaling comprises the following components: the antenna beam elevation parameters.
In some embodiments, the broadcast message or higher layer signaling further comprises: and other switching parameters for the inter-satellite cell switching process besides the antenna beam elevation parameters.
The network side device provided in the embodiment of the present invention may execute the method embodiment shown in fig. 3 or 4, and its implementation principle and technical effects are similar, and this embodiment will not be repeated here.
Referring to fig. 9, an embodiment of the present invention provides an indicating apparatus, applied to a terminal, where the apparatus 900 includes:
a receiving module 901, configured to receive antenna beam elevation parameters from a network side device;
and the judging module 902 is 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 for: receiving a broadcast message or a higher layer signaling, wherein the broadcast message or the higher layer signaling comprises: the antenna beam elevation parameters.
Optionally, the broadcast message or the higher layer signaling further includes: and other switching parameters for the inter-satellite cell switching process besides the antenna beam elevation parameters.
The device for indicating provided by the embodiment of the present invention may execute the method embodiment shown in fig. 5 or 6, and its implementation principle and technical effects are similar, and this embodiment will not be repeated here.
Referring to fig. 10, an embodiment of the present invention provides a terminal, the terminal 1000 including: 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 the program in the memory to perform the following operations: receiving antenna beam elevation parameters from network side equipment; and judging whether to switch the cells among satellites according to the antenna beam elevation angle parameters.
In some implementations, the second processor 1002 reads the program in memory to perform the following operations: receiving a broadcast message or a higher layer signaling, wherein the broadcast message or the higher layer signaling comprises: the antenna beam elevation parameters.
Optionally, the broadcast message or the higher layer signaling further includes: and other switching parameters for the inter-satellite cell switching process besides the antenna beam elevation parameters.
The terminal provided by the embodiment of the present invention may execute the method embodiment shown in fig. 5 or 6, and its implementation principle and technical effects are similar, and this embodiment will not be repeated here.
Referring to fig. 11, fig. 11 is a block diagram of a communication device to which an embodiment of the present invention is applied, and as shown in fig. 11, a communication device 1100 includes: processor 1101, transceiver 1102, memory 1103 and bus interface, wherein:
in one embodiment of the present invention, the communication device 1100 further comprises: a program stored on the memory 1103 and executable on the processor 1101, which when executed by the processor 1101, implements the steps in the embodiments shown in fig. 3 to 6.
In fig. 11, a bus architecture may comprise any number of interconnecting buses and bridges, with various circuits of the one or more processors, as represented by the processor 1101, and the memory, as represented by the memory 1103, being linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 1102 may be a number of elements, i.e., including a transmitter and a receiver, providing 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 the operations.
The communication device provided in the embodiment of the present invention may execute the method embodiments shown in fig. 3 to 6, and its implementation principle and technical effects are similar, and this embodiment will not be repeated here.
The steps of a method or algorithm described in connection with the present disclosure may be embodied in hardware, or may be embodied in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, a removable disk, a read-only optical 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. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may be located in a core network interface device. The processor and the storage medium may reside as discrete components in a core network interface device.
Those skilled in the art will appreciate that in one or more of the examples described above, the functions described in the present 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 include 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 foregoing embodiments have been provided for the purpose of illustrating the general principles of the present invention in further detail, and are not to be construed as limiting the scope of the invention, but are merely intended to cover any modifications, equivalents, improvements, etc. based on the teachings of the invention.
It will be appreciated by those skilled in the art that 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 invention may take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) 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 flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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 modifications and variations can be made to 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 and the equivalents thereof, the present invention is also intended to include such modifications and variations.
Claims (14)
1. An indication method applied to network side equipment is characterized by comprising the following steps:
determining an antenna beam elevation parameter of a terminal, wherein the antenna beam elevation parameter is an angle threshold value for judging whether to trigger a cell switching process between satellites by the terminal;
and sending the antenna beam elevation parameters to the terminal.
2. The method of claim 1, wherein determining antenna beam elevation parameters for the terminal comprises:
acquiring one or more of constellation configuration, position information of the terminal, working state of a current satellite cell where the terminal is located and working state of an adjacent satellite cell;
and calculating the antenna beam elevation angle parameter of the terminal according to one or more 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 according to claim 1, wherein the method further comprises:
judging whether the terminal updates the antenna beam elevation parameters or not;
and if the terminal is judged to need to update the antenna beam elevation parameter, the step of sending the antenna beam elevation parameter to the terminal is executed.
4. A method according to claim 1 or 3, characterized in that said transmitting the antenna beam elevation parameters to the terminal comprises:
and sending a broadcast message or a high-layer signaling to the terminal, wherein the broadcast message or the high-layer signaling comprises the following components: the antenna beam elevation parameters.
5. The method of claim 4, wherein the broadcast message or higher layer signaling further comprises: and other switching parameters for the inter-satellite cell switching process besides the antenna beam elevation parameters.
6. An indication method applied to a terminal is characterized by comprising the following steps:
receiving antenna beam elevation parameters from network side equipment, wherein the antenna beam elevation parameters are angle threshold values for judging whether to trigger a cell switching process between satellites or not by the terminal;
and judging whether to switch the cells among satellites according to the antenna beam elevation angle parameters.
7. The method of claim 6, wherein the receive antenna beam elevation parameters comprise:
receiving a broadcast message or a higher layer signaling, wherein the broadcast message or the higher layer signaling comprises: the antenna beam elevation parameters.
8. The method of claim 7, wherein the broadcast message or higher layer signaling further comprises: and other switching parameters for the inter-satellite cell switching process besides the antenna beam elevation parameters.
9. An indicating apparatus, applied to a network side device, characterized by comprising:
the determining module is used for determining antenna beam elevation parameters of the terminal, wherein the antenna beam elevation parameters are angle threshold values 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 the control of the first processor;
the first processor reads the 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 an angle threshold value for judging whether to trigger a cell switching process between satellites by the terminal; and sending the antenna beam elevation parameters to the terminal.
11. An indicating device applied to a terminal, comprising:
the receiving module is used for receiving antenna beam elevation parameters from network side equipment, wherein the antenna beam elevation parameters are angle threshold values for judging whether to trigger a cell switching process between satellites or not by the terminal;
and the judging module is used for judging whether the inter-satellite cell switching is carried out or not according to the antenna beam elevation angle parameters.
12. A terminal, comprising: a second transceiver and a second processor;
the second transceiver transmitting and receiving data under the control of the second processor;
the second processor reads the program in the memory to perform the following operations: receiving antenna beam elevation parameters from network side equipment, wherein the antenna beam elevation parameters are angle threshold values for judging whether to trigger a cell switching process between satellites or not by the terminal; and judging whether to switch the cells among satellites according to the antenna beam elevation angle parameters.
13. A communication device, comprising: a processor, a memory and a program stored on the memory and executable on the processor, which when executed by the processor performs the steps comprising the method according to any of claims 1 to 8.
14. A readable storage medium, characterized in that it has stored thereon a program which, when executed by a processor, realizes the steps comprising the method according to any of claims 1 to 8.
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| CN116131919B (en) * | 2023-02-07 | 2023-08-04 | 银河航天(北京)网络技术有限公司 | Broadband beam switching method and device, electronic equipment and storage medium |
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| CN1122959A (en) * | 1994-08-23 | 1996-05-22 | 罗拉尔奎尔康卫星服务有限公司 | Antenna for multipath satellite communication links |
| CN109765585A (en) * | 2019-02-26 | 2019-05-17 | 和芯星通（上海）科技有限公司 | A kind of satellite ephemeris prediction technique, satellite positioning method and device, storage medium |
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| US6246874B1 (en) * | 1998-04-29 | 2001-06-12 | Hughes Electronics Corporation | Method and apparatus for predicting spot beam and satellite handover in a mobile satellite communication network |
| CN103220740A (en) * | 2012-01-20 | 2013-07-24 | 电信科学技术研究院 | Cell switching method and device |
| BR112019004433A2 (en) * | 2016-09-13 | 2019-05-28 | Qualcomm Inc | list of neighboring cells in a satellite communication system |
| CN110572203B (en) * | 2019-10-14 | 2020-12-29 | 中国科学院计算技术研究所 | User switching method in satellite communication |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1122959A (en) * | 1994-08-23 | 1996-05-22 | 罗拉尔奎尔康卫星服务有限公司 | Antenna for multipath satellite communication links |
| CN109765585A (en) * | 2019-02-26 | 2019-05-17 | 和芯星通（上海）科技有限公司 | A kind of satellite ephemeris prediction technique, satellite positioning method and device, storage medium |
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