CN115396004B - Autonomous prediction switching method and device for low-orbit satellite no-measurement report - Google Patents

Autonomous prediction switching method and device for low-orbit satellite no-measurement report Download PDF

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CN115396004B
CN115396004B CN202210799007.9A CN202210799007A CN115396004B CN 115396004 B CN115396004 B CN 115396004B CN 202210799007 A CN202210799007 A CN 202210799007A CN 115396004 B CN115396004 B CN 115396004B
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switching
report
target
user
satellite
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CN115396004A (en
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侯延昭
许晓东
陶小峰
张宁
曹晖
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Beijing University of Posts and Telecommunications
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Beijing University of Posts and Telecommunications
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18519—Operations control, administration or maintenance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H04B7/18532—Arrangements for managing transmission, i.e. for transporting data or a signalling message
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H04B7/18539—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Abstract

The application discloses a low-orbit satellite non-measurement report autonomous prediction switching method and equipment, wherein the method comprises the following steps: a switching prediction report is sent to a target terminal through a source terminal, and the target terminal carries out resource configuration according to the switching prediction report; the target end sends the resource configuration information to the source end, and the source end sends a switching report to User Equipment (UE) according to the resource configuration information; and the UE completes channel switching according to the switching report.

Description

Autonomous prediction switching method and device for low-orbit satellite no-measurement report
Technical Field
The application relates to the technical field of satellite communication, in particular to an autonomous prediction switching method and device for a low-orbit satellite no-measurement report.
Background
If the user moves from one cell to another while the mobile user is in a call state, the system also transfers control of the connection to the mobile station from one cell to another cell in order to ensure continuity of the call. The process of transferring a mobile station in a call to a new traffic channel (new cell) is called handoff.
The operation of the handover includes not only identifying the new cell but also requiring a voice channel and a control channel allocated to the mobile station in the new cell. The existing switching technology is divided into three types: hard handoff, soft handoff, baton handoff.
But the traditional hard handoff call drop rate is high and the handoff success rate is low. The soft handoff needs more occupied channel resources, complex signaling and large downlink interference. In the low orbit satellite scene, the relay switching has huge signaling consumption because the satellite moving speed is high and the beam switching is frequent. In addition, the key point of relay switching is that the measurement report is uploaded by the user after the measurement, and the accuracy of the measurement report is reduced because the low orbit satellite has higher height, large transmission delay and quick satellite position change. The measurement indexes such as signal intensity commonly used on the ground are not obviously changed in satellite scenes, and are not suitable for low-orbit satellites.
Disclosure of Invention
The application provides a low-orbit satellite non-measurement report autonomous prediction switching method and device, which solve the problems of high signaling overhead, low measurement report accuracy, large propagation delay and the like in the existing switching technology.
A low-orbit satellite no-measurement report autonomous prediction switching method comprises the following steps:
a switching prediction report is sent to a target terminal through a source terminal, and the target terminal carries out resource configuration according to the switching prediction report;
the target end sends the resource configuration information to the source end, and the source end sends a switching report to User Equipment (UE) according to the resource configuration information;
and the UE completes channel switching according to the switching report.
In one embodiment of the present application, after the channel switching is completed according to the switching report, the method further includes: and the UE sends the switching completion information to a target terminal, and the target terminal executes corresponding operation according to the switching prediction report.
In one embodiment of the present application, the sending, by a source end, a handover prediction report to a target end, where the target end performs resource configuration according to the handover prediction report, specifically includes: transmitting a first handover prediction report to a satellite over a source beam, the first handover prediction report including location information of a user; after receiving the first switching prediction report, the user switching management system of the satellite performs prediction analysis according to the position information, the satellite ephemeris and the user motion information; and the user switching management system sends a switching request report to a target beam group according to the prediction analysis result, the target beam group carries out channel resource allocation according to the switching request report, and the switching request report comprises the fastest switching time.
In an embodiment of the present application, the target end sends resource configuration information to the source end, and the source end issues a handover report to a user terminal UE according to the resource configuration information, which specifically includes: the target beam group sends the information of resource allocation to the user switching management system; after receiving the information of the resource configuration, the user switching management system determines a target beam group and the time between the latest resource release time and the fastest switching time in the target beam group as the issuing time of a first switching report; and the user switching management system sends a first switching report to the user terminal UE at the issuing moment.
In one embodiment of the present application, the sending, by a source end, a handover prediction report to a target end, where the target end performs resource configuration according to the handover prediction report, specifically includes: acquiring position information of a user through a user switching management system of a source satellite after the last switching is finished, and sending a second switching prediction report to a target satellite group according to the position information; the second handover prediction report includes a fastest handover time; and the target satellite group performs resource allocation for the user according to the second switching prediction report, and the target satellite group determines that the resource allocation can be performed for the user before the fastest switching moment.
In an embodiment of the present application, the target end sends resource configuration information to the source end, and the source end issues a handover report to a user terminal UE according to the resource configuration information, which specifically includes: the target satellite group sends information of resource allocation to the source satellite, wherein the resource allocation information comprises resource release time of the target satellite group; the user switching management system of the source satellite takes the time between the latest resource release time and the fastest switching time in the resource release time as the issuing time of a second switching report; and the user switching management system sends a second switching report to the user terminal UE at the issuing moment.
In one embodiment of the present application, the UE sends handover completion information to a target, where the target performs a corresponding operation according to the handover completion information, and specifically includes: the UE sends a first switching completion report to a target beam group, and a target beam which is successfully switched in the target beam group sends a switching completion report to a user switching management system of a satellite according to the switching completion report; the user switching management system sends a resource release report to a source beam according to the switching completion report, and the source beam releases resources according to the resource release report; and releasing the resources of the target beams which are not successfully switched in the target beam group.
In one embodiment of the present application, the UE sends handover completion information to a target, where the target performs a corresponding operation according to the handover completion information, and specifically includes: the UE sends a first switching completion report to a target satellite group, and the target satellite group initiates a request for updating a bearing context to a ground core network according to the switching completion report; the core network responds to the request to establish connection with a target satellite which is successfully connected in the target satellite group, and after the establishment is completed, the target satellite sends a resource release report to a source satellite; and releasing the resources of the target satellites which are not successfully switched in the target satellite group.
In one embodiment of the present application, after receiving the first handover prediction report, the user handover management system of the satellite performs prediction analysis according to the location information, satellite ephemeris and user motion information, and specifically includes: determining the current position of a user as position information, and predicting the moving position of the user by taking the position of the user as a circle center according to the moving radius to serve as user motion information; the movement radius is determined according to the satellite beam switching interval and the land high-speed rail speed; after receiving the first switching prediction report, the user switching management system of the satellite judges the moving direction of the satellite, and predicts the wave beam accessed by the user according to the moving direction of the satellite and the user motion information of the user; and determining the fastest switching time and the slowest switching time according to the wave beam which is predicted to be accessed and the moving direction of the satellite.
In an embodiment of the present application, the target end performs resource configuration according to the handover prediction report, and specifically includes: the switching prediction report comprises the fastest switching moment; judging whether the target end can allocate channel resources before the fastest switching moment, if so, allocating the channel resources; if not, judging whether the target end can release channel resources before the fastest switching moment; if yes, returning the resource release time information of the current channel to the satellite; and after the original connection resources of the target end are released, carrying out resource allocation.
A low-orbit satellite no-measurement report autonomous predictive switching device, comprising:
at least one processor; the method comprises the steps of,
a memory communicatively coupled to the at least one processor via a bus; wherein,
the memory stores instructions executable by the at least one processor, the instructions being executable by the at least one processor to cause the at least one processor to perform:
a switching prediction report is sent to a target terminal through a source terminal, and the target terminal carries out resource configuration according to the switching prediction report;
the target end sends the resource configuration information to the source end, and the source end sends a switching report to User Equipment (UE) according to the resource configuration information;
and the UE completes channel switching according to the switching report.
A non-volatile storage medium storing computer executable instructions for execution by a processor to perform the steps of:
a switching prediction report is sent to a target terminal through a source terminal, and the target terminal carries out resource configuration according to the switching prediction report;
the target end sends the resource configuration information to the source end, and the source end sends a switching report to User Equipment (UE) according to the resource configuration information;
and the UE completes channel switching according to the switching report.
The application provides a low-orbit satellite non-measurement report autonomous prediction switching method and equipment, which at least comprise the following beneficial effects: by determining the orbit position and periodicity according to the satellite ephemeris, the satellite sends a switching request according to the user position, so that the signaling loss caused by frequent switching and the switching signaling overhead caused by high-speed movement of the satellite in satellite switching can be reduced, and the problem of selecting measurement report events in a low orbit satellite scene can be avoided. Compared with the traditional scheme, the method and the device reduce the process of uploading the measurement report by the user and the process of issuing the measurement configuration by the base station in the switching process, and shorten the physical propagation time delay to be two fifths of the original time delay. The user position information is inserted into the switching signaling to provide a prediction basis for the satellite, and the user switching management system is introduced to calculate the fastest switching moment and the slowest switching moment in equal quantity, so that the reliability of the system is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
fig. 1 is a schematic step diagram of an autonomous prediction switching method for a low-orbit satellite without measurement report according to an embodiment of the present application;
fig. 2 is a schematic diagram of an interaction flow of intra-satellite beam switching signaling according to an embodiment of the present application;
fig. 3a is a schematic view of satellite beam movement according to an embodiment of the present application;
fig. 3b is a schematic diagram of a satellite beam moving in a direction-switching time according to an embodiment of the present application;
fig. 3c is a schematic diagram of a satellite beam moving in a second direction and switching time according to an embodiment of the present application;
fig. 4 is a schematic diagram of an interaction flow of inter-satellite beam switching signaling provided in an embodiment of the present application;
fig. 5 is a diagram of a low-orbit satellite autonomous prediction switching device without measurement report according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be clearly and completely described in connection with specific embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
It should be noted that, as those skilled in the art explicitly and implicitly understand, the embodiments described in the present application may be combined with other embodiments without conflict. Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. Reference to "a," "an," "the," and similar terms herein do not denote a limitation of quantity, but rather denote the singular or plural. The terms "comprising," "including," "having," and any variations thereof, are intended to cover a non-exclusive inclusion; the terms "first," "second," "third," and the like, as used herein, are merely distinguishing between similar objects and not representing a particular ordering of objects.
In the prior art, hard handoff is one mode of handoff that occurs between cells of different frequencies, and the FDMA (Frequency Division Multiple Access) and TDMA (Time Division Multiple Access) systems support hard handoff. The hard handoff procedure is: when a User Equipment (UE) moves from a source cell to a target cell, the UE is disconnected from a source cell channel after entering the target cell due to different carrier frequencies of the source cell and the target cell, goes through a synchronization process, then automatically tunes to a new frequency of the target cell, contacts with the target cell, establishes a new channel, starts uplink and downlink data communication under the new frequency, and finally completes the handover from the source cell to the target cell.
The soft handoff is a handoff mode occurring between cells of the same frequency and different frequencies, because the handoff is performed between cells of the same frequency, when the UE moves to a state where a plurality of cell coverage boundary areas are in handoff, the UE can be simultaneously contacted with the plurality of cells due to the same frequency, receive channel quality reports of the cells, compare the channel quality reports with a system designated threshold, and take a cell corresponding to an optimal value as a target cell for handoff, and then the UE cuts off a contact channel with a source cell to finish the handoff of the UE from the source cell to the target cell.
The relay handover requires the UE to measure the reference signal intensity of the base station of the cell and the base station of the adjacent cell, and report the reference signal intensity to the base station, the base station judges the measured signal, if the judgment result is that the handover is required, the base station firstly requests the adjacent cell to communicate with the adjacent cell, the adjacent cell prepares unlimited resources and the uplink of the terminal in advance, and after the adjacent cell prepares the resources and the terminal context, the resources of the current cell are cut off, and the adjacent cell takes over the control of the terminal.
But the traditional hard handoff call drop rate is high and the handoff success rate is low. The soft handoff needs more occupied channel resources, complex signaling and large downlink interference. In the low orbit satellite scene, the relay switching has huge signaling consumption because the satellite moving speed is high and the beam switching is frequent. In addition, the key point of relay switching is that the measurement report is uploaded by the user after the measurement, and the accuracy of the measurement report is reduced because the low orbit satellite has higher height, large transmission delay and quick satellite position change. The measurement indexes such as signal intensity commonly used on the ground are not obviously changed in satellite scenes, and are not suitable for low-orbit satellites.
For low-orbit satellite switching, a satellite can send a switching request based on a user position through a fixed orbit position and periodicity, so that signaling loss caused by frequent switching can be reduced, and the problem of selecting measurement report events in a low-orbit satellite scene can be avoided. The following is a detailed description.
Fig. 1 is a schematic step diagram of a method and an apparatus for autonomous prediction switching of a low-orbit satellite no-measurement report according to an embodiment of the present application, which may include the following steps:
s110: and sending a switching prediction report to the target end through the source end, and carrying out resource configuration by the target end according to the switching prediction report.
S120: the target end sends the resource allocation information to the source end, and the source end sends a switching report to the user terminal UE according to the resource allocation information.
S130: and the UE completes channel switching according to the switching report.
In one embodiment of the present application, after completing channel switching according to a switching report, the UE sends switching completion information to the target terminal, and the target terminal performs a corresponding operation according to a switching prediction report.
Fig. 2 is a schematic diagram of an interaction flow of intra-satellite beam switching signaling. In one embodiment of the present application, a source end sends a handover prediction report to a target end, and the target end performs resource allocation according to the handover prediction report, which specifically includes: transmitting a first handover prediction report to the satellite via the source beam, the first handover prediction report including location information of the user; after receiving the first switching prediction report, the user switching management system of the satellite performs prediction analysis according to the position information, the satellite ephemeris and the user motion information; and the user switching management system sends a switching request report to the target beam group according to the prediction analysis result, and the target beam group carries out channel resource configuration according to the switching request report, wherein the switching request report comprises the fastest switching moment.
Specifically, the first handover prediction report is sent upon intra-satellite beam handover signaling interaction. Upon completion of the last channel switch, the source beam transmits a first switch prediction report to the satellite. The first handover prediction report includes a user ID and location information of the user. As shown in table 1:
field name TYPE SUB_TYPE USER_ID LOCATION
Value taking MM_H Forecast User ID Position information
Length of 8bit 16bit 8bit 16bit
TABLE 1
In one embodiment of the application, determining the current position of the user as position information, and predicting the moving position of the user as user motion information according to the moving radius by taking the position of the user as a circle center; the movement radius is determined according to the satellite beam switching interval and the land high-speed rail speed; after receiving the first switching prediction report, the user switching management system of the satellite judges the moving direction of the satellite, and predicts the wave beam accessed by the user according to the moving direction of the satellite and the user motion information of the user; and determining the fastest switching time and the slowest switching time according to the wave beam and the satellite moving direction which are predicted to be accessed.
Specifically, after receiving the first switching prediction report, the user switching management system of the satellite can perform prediction analysis according to the position information in the first switching prediction report and combining ephemeris and user motion information (prediction information of the ground user motion direction). The specific situation is shown in fig. 3 a: the center of the circle with an asterisk is the specific position of the user. The range covered by the asterisk circle is the position that the user may appear before the next switch, and the radius of the asterisk circle is based on the satellite beam switch interval and the land high-speed rail speed of 100 m/s. As shown in fig. 3b, if the satellite moving direction is the direction one, the user can only switch the user under the first beam next time, the fastest switching time is the contact time of the path one with the star circle with the first beam, and the slowest switching time is the departure time of the path one with the star circle with the first beam. As shown in fig. 3c, if the satellite moving direction is the direction two, the next time of switching the user may occur under the first beam or the second beam, the fastest switching time is the contact time along the direction path two with the second beam and the first beam, and the slowest switching time is the departure time along the direction path two with the second beam and the first beam.
The user handover management system transmits a handover request to the beam where handover may exist through the above analysis, and the beam where handover may exist composes a target beam group, and the request report format is as shown in table 2:
TABLE 2
In one embodiment of the present application, the fastest handover time is included in the handover prediction report; judging whether the target end can allocate channel resources before the fastest switching moment, if so, allocating the channel resources; if not, judging whether the target end can release the channel resource before the fastest switching moment; if yes, returning the resource release time information of the current channel to the satellite; and after the original connection resources of the target end are released, carrying out resource allocation.
Specifically, if the beam receiving the report of the switching request can perform resource allocation before the fastest switching time of the beam, the pre-allocation of the channel resources is performed, and if the channel resources are temporarily occupied, if the channel resources can be released before the fastest switching time, the channel resource release time information needs to be returned.
And after the original connection channel resource of the target beam is released, the resource allocation is carried out for the user. Transmitting the uplink and downlink frequency information and the channel resource release time information to a satellite user switching management system to obtain a resource configuration report, wherein the report content is shown in table 3:
TABLE 3 Table 3
If the target beam in the target beam group judges that the resource configuration cannot be performed, the resource configuration information is not transmitted, and only the target beam which is judged to be in accordance with the condition transmits the resource configuration information to the source satellite, and the number of the target beams which are judged to be in accordance with the condition can be one or more.
In one embodiment of the present application, the target end sends resource configuration information to the source end, and the source end issues a handover report to the UE according to the resource configuration information, which specifically includes: the target beam group sends the information of resource allocation to a user switching management system; after receiving the information of resource allocation, the user switching management system determines a target beam group and the time between the latest resource release time and the fastest switching time in the target beam group as the issuing time of a first switching report; and the user switching management system sends a first switching report to the user terminal UE at the issuing time.
Specifically, after receiving the resource configuration information, the satellite user switching management system compares all possible switching beam information, regards all possible switching beams as a target beam group, takes the time between the latest resource release time and the fastest switching time in the target beam group as a first switching report issuing time, and sends a first switching report to the user terminal UE. The report contents are shown in table 4:
TABLE 4 Table 4
In one embodiment of the present application, the UE sends handover complete information to the target, and the target performs a corresponding operation according to the handover complete information, which specifically includes: the UE sends a first switching completion report to a target beam group, and target beams which are successfully switched in the target beam group send a switching completion report to a user switching management system of the satellite according to the switching completion report; the user switching management system sends a resource release report to the source beam according to the switching completion report, and the source beam releases resources according to the resource release report; and releasing resources of the beams which are not successfully connected in the target beam group.
Specifically, the UE performs handover according to the first handover report, and uploads a handover completion report to the target beam group after handover, where the report information table 5 shows:
TABLE 5
After the target beam finishes switching, the user switching management system of the same satellite sends a resource release report to the source beam, wherein the resource release report is shown in table 6:
TABLE 6
The source beam releases resources through the resource release report sent by the user switching management system of the satellite, and the target beam group automatically releases resources which are not successfully switched after the slowest switching time in the corresponding first switching prediction report.
Fig. 4 is a schematic diagram of an interaction flow of inter-satellite beam switching signaling.
In one embodiment of the present application, a source end sends a handover prediction report to a target end, and the target end performs resource allocation according to the handover prediction report, which specifically includes: acquiring position information of a user through a user switching management system of the source satellite after the last switching is finished, and sending a second switching prediction report to a target satellite group according to the position information; the second handover prediction report includes a fastest handover time; and the target satellite group performs resource allocation for the user according to the second switching prediction report, and the target satellite group determines that the resource allocation can be performed for the user before the fastest switching moment.
Specifically, the user switching management system of the source satellite obtains the position information of the user after the last switching, and sends a second switching prediction report to other satellite beams possibly passing through according to the same calculation method of the intra-satellite beam switching. The second handover prediction report is shown in table 7:
TABLE 7
After the target satellite group obtains the second handover prediction report, judging whether the resource configuration can be carried out for the user before the fastest handover moment according to the designated source beam ID and the fastest handover moment, if the resource configuration can be carried out, sending a configuration report to the source satellite, wherein the report content is shown in table 8:
TABLE 8
If the target satellites in the target satellite group determine that the resource allocation is impossible, the resource allocation information is not transmitted, and only the target satellites which are determined to be in accordance with the condition transmit the resource allocation information to the source satellite, and the number of the target satellites may be one or more.
In one embodiment of the present application, the target end sends resource configuration information to the source end, and the source end issues a handover report to the UE according to the resource configuration information, which specifically includes: the target satellite group sends information of resource allocation to the source satellite, wherein the resource allocation information comprises the resource release time of the target satellite group; the user switching management system of the source satellite takes the time between the latest resource release time and the fastest switching time in the resource release time as the issuing time of the second switching report; and the user switching management system sends a second switching report to the user terminal UE at the issuing moment.
Specifically, after receiving a resource allocation report returned by a target satellite group, the user switching management system of the source satellite gathers satellite group information, and sends a second switching report to the UE according to the released resource time of each target satellite in the satellite group information, with the time between the latest resource release time and the fastest switching time of each target satellite as a second switching report sending time. The report contents are shown in Table 9:
TABLE 9
In one embodiment of the present application, the UE sends handover complete information to the target, and the target performs a corresponding operation according to the handover complete information, which specifically includes: the UE sends a first switching completion report to a target satellite group, and the target satellite group initiates a request for updating the bearing context to the ground core network according to the switching completion report; the core network responds to the request to establish connection with a target satellite which is successfully connected in the target satellite group, and after the establishment is completed, the target satellite sends a resource release report to the source satellite; and the target satellite group releases resources of the target satellites which are not successfully connected.
Specifically, the UE performs handover according to the second handover report, and uploads a handover completion report to the target satellite group after handover, where report information is shown in table 10:
table 10
After the target beam is switched, a new bearer establishment request is initiated to the ground core network, and after the establishment is completed, a resource release report is sent to the source beam, wherein the resource release report is shown in table 11:
field name TYPE SUB_TYPE USER_ID BEAM_ID SATE_ID
Value taking MM_H Release_request User ID Beam ID Satellite ID
Length of 8bit 16bit 8bit 8bit 8bit
TABLE 11
The source beam releases resources through a release report sent by the source satellite user switching management system, and the target beam group automatically releases resources which are not successfully switched after the slowest switching time in the corresponding second switching prediction report.
The foregoing provides a method and an apparatus for autonomous prediction switching of a low-orbit satellite no-measurement report according to the embodiments of the present application, and based on the same inventive concept, the embodiments of the present application further provide a corresponding apparatus for autonomous prediction switching of a low-orbit satellite no-measurement report, as shown in fig. 5.
The embodiment provides a low-orbit satellite non-measurement report autonomous prediction switching device, which comprises:
at least one processor 501; the method comprises the steps of,
a memory 502 communicatively coupled to the at least one processor 501 via a bus 503; wherein,
the memory 502 stores instructions executable by the at least one processor, the instructions being executable by the at least one processor 501 to enable the at least one processor 501 to perform:
the source end sends a switching prediction report to the target end, and the target end carries out resource configuration according to the switching prediction report;
the target end sends the resource configuration information to the source end, and the source end sends a switching report to the user terminal UE according to the resource configuration information;
and the UE completes channel switching according to the switching report.
Based on the same thought, some embodiments of the present application further provide a medium corresponding to the above method.
Some embodiments of the present application provide a storage medium storing computer-executable instructions that are executed by a processor to perform the steps of:
the source end sends a switching prediction report to the target end, and the target end carries out resource configuration according to the switching prediction report;
the target end sends the resource configuration information to the source end, and the source end sends a switching report to the user terminal UE according to the resource configuration information;
and the UE completes channel switching according to the switching report.
All embodiments in the application are described in a progressive manner, and identical and similar parts of all embodiments are mutually referred, so that each embodiment mainly describes differences from other embodiments. In particular, for the method and medium embodiments, the description is relatively simple, as it is substantially similar to the method embodiments, with reference to the section of the method embodiments being relevant.
The method, medium and the method provided in the embodiments of the present application are in one-to-one correspondence, so that the method and the medium also have similar beneficial technical effects as the corresponding method, and since the beneficial technical effects of the method have been described in detail above, the beneficial technical effects of the method and the medium are not described in detail herein.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process article or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process article or method. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process method article or method comprising the element.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. While the application has been described in detail with respect to the general description and the specific embodiments thereof, it will be apparent to those skilled in the art that certain modifications and improvements can be made thereto based upon the application. Accordingly, such modifications or improvements may be made without departing from the spirit of the application and are intended to be within the scope of the invention as claimed.

Claims (10)

1. The autonomous prediction switching method for the low-orbit satellite no-measurement report is characterized by comprising the following steps of:
the method comprises the steps that a source terminal sends a switching prediction report to a target terminal, and the target terminal carries out resource configuration according to the switching prediction report, and specifically comprises the following steps: transmitting a first handover prediction report to a satellite over a source beam, the first handover prediction report including location information of a user; after receiving the first switching prediction report, the user switching management system of the satellite performs prediction analysis according to the position information, the satellite ephemeris and the user motion information; the user switching management system sends a switching request report to a target beam group according to a prediction analysis result, the target beam group carries out channel resource allocation according to the switching request report, and the switching request report comprises the fastest switching time; or the user switching management system of the source satellite obtains the position information of the user after the last switching is finished, and a second switching prediction report is sent to the target satellite group according to the position information; the second handover prediction report includes a fastest handover time; the target satellite group judges that the resource allocation can be carried out for the user before the fastest switching moment according to the second switching prediction report, and then the resource allocation is carried out for the user;
the target end sends the resource configuration information to the source end, and the source end sends a switching report to User Equipment (UE) according to the resource configuration information;
and the UE completes channel switching according to the switching report.
2. The method of claim 1, wherein after said completing a channel switch according to said switch report, said method further comprises:
and the UE sends the switching completion information to a target terminal, and the target terminal executes corresponding operation according to the switching prediction report.
3. The method according to claim 1, wherein the target end sends resource configuration information to the source end, and the source end issues a handover report to a user terminal UE according to the resource configuration information, specifically including:
the target beam group sends the information of resource allocation to the user switching management system;
after receiving the information of the resource configuration, the user switching management system determines a target beam group and the time between the latest resource release time and the fastest switching time in the target beam group as the issuing time of a first switching report;
and the user switching management system sends a first switching report to the user terminal UE at the issuing moment.
4. The method according to claim 1, wherein the target end sends resource configuration information to the source end, and the source end issues a handover report to a user terminal UE according to the resource configuration information, specifically including:
the target satellite group sends information of resource allocation to the source satellite, wherein the resource allocation information comprises resource release time of the target satellite group;
the user switching management system of the source satellite takes the time between the latest resource release time and the fastest switching time in the resource release time as the issuing time of a second switching report;
and the user switching management system sends a second switching report to the user terminal UE at the issuing moment.
5. The method of claim 2, wherein the UE sends handover complete information to a target, and the target performs corresponding operations according to the handover complete information, and specifically includes:
the UE sends a first switching completion report to a target beam group, and a target beam which is successfully switched in the target beam group sends a switching completion report to a user switching management system of a satellite according to the switching completion report;
the user switching management system sends a resource release report to a source beam according to the switching completion report, and the source beam releases resources according to the resource release report; and is combined with
And releasing the resources of the target beams which are not successfully switched in the target beam group.
6. The method of claim 2, wherein the UE sends handover complete information to a target, and the target performs corresponding operations according to the handover complete information, and specifically includes:
the UE sends a first switching completion report to a target satellite group, and the target satellite group initiates a request for updating a bearing context to a ground core network according to the switching completion report;
the core network responds to the request to establish connection with a target satellite which is successfully connected in the target satellite group, and after the establishment is completed, the target satellite sends a resource release report to a source satellite; and is combined with
And releasing resources of the target satellites which are not successfully switched in the target satellite group.
7. The method according to claim 1, wherein the user handoff management system of the satellite performs predictive analysis based on the location information, satellite ephemeris and user motion information after receiving the first handoff prediction report, specifically comprising:
determining the current position of a user as position information, and predicting the moving position of the user by taking the position of the user as a circle center according to the moving radius to serve as user motion information; the movement radius is determined according to the satellite beam switching interval and the land high-speed rail speed;
after receiving the first switching prediction report, the user switching management system of the satellite judges the moving direction of the satellite, and predicts the wave beam accessed by the user according to the moving direction of the satellite and the user motion information of the user;
and determining the fastest switching time and the slowest switching time according to the wave beam which is predicted to be accessed and the moving direction of the satellite.
8. The method of claim 1, wherein the target performs resource allocation according to the handover prediction report, specifically including:
the switching prediction report comprises the fastest switching moment;
judging whether the target end can allocate channel resources before the fastest switching moment, if so, allocating the channel resources;
if not, judging whether the target end can release channel resources before the fastest switching moment;
if yes, returning the resource release time information of the current channel to the satellite;
and after the original connection resources of the target end are released, carrying out resource allocation.
9. A low-orbit satellite-free measurement report autonomous predictive switching device, comprising:
at least one processor; the method comprises the steps of,
a memory communicatively coupled to the at least one processor via a bus; wherein,
the memory stores instructions executable by the at least one processor, the instructions being executable by the at least one processor to cause the at least one processor to perform:
the method comprises the steps that a source terminal sends a switching prediction report to a target terminal, and the target terminal carries out resource configuration according to the switching prediction report, and specifically comprises the following steps: transmitting a first handover prediction report to a satellite over a source beam, the first handover prediction report including location information of a user; after receiving the first switching prediction report, the user switching management system of the satellite performs prediction analysis according to the position information, the satellite ephemeris and the user motion information; the user switching management system sends a switching request report to a target beam group according to a prediction analysis result, the target beam group carries out channel resource allocation according to the switching request report, and the switching request report comprises the fastest switching time; or the user switching management system of the source satellite obtains the position information of the user after the last switching is finished, and a second switching prediction report is sent to the target satellite group according to the position information; the second handover prediction report includes a fastest handover time; the target satellite group judges that the resource allocation can be carried out for the user before the fastest switching moment according to the second switching prediction report, and then the resource allocation is carried out for the user;
the target end sends the resource configuration information to the source end, and the source end sends a switching report to User Equipment (UE) according to the resource configuration information;
and the UE completes channel switching according to the switching report.
10. A non-volatile storage medium storing computer executable instructions, wherein the computer executable instructions are executed by a processor to perform the steps of:
the method comprises the steps that a source terminal sends a switching prediction report to a target terminal, and the target terminal carries out resource configuration according to the switching prediction report, and specifically comprises the following steps: transmitting a first handover prediction report to a satellite over a source beam, the first handover prediction report including location information of a user; after receiving the first switching prediction report, the user switching management system of the satellite performs prediction analysis according to the position information, the satellite ephemeris and the user motion information; the user switching management system sends a switching request report to a target beam group according to a prediction analysis result, the target beam group carries out channel resource allocation according to the switching request report, and the switching request report comprises the fastest switching time; or the user switching management system of the source satellite obtains the position information of the user after the last switching is finished, and a second switching prediction report is sent to the target satellite group according to the position information; the second handover prediction report includes a fastest handover time; the target satellite group judges that the resource allocation can be carried out for the user before the fastest switching moment according to the second switching prediction report, and then the resource allocation is carried out for the user;
the target end sends the resource configuration information to the source end, and the source end sends a switching report to User Equipment (UE) according to the resource configuration information;
and the UE completes channel switching according to the switching report.
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Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014124753A1 (en) * 2013-02-13 2014-08-21 Overhorizon (Cyprus) Plc Method for shifting communications of a terminal located on a moving platform from a first to a second satellite antenna beam.
CN108366400A (en) * 2018-01-24 2018-08-03 北京邮电大学 A kind of empty day network switching real-time predicting method based on time evolution figure
CN110072264A (en) * 2019-05-28 2019-07-30 重庆邮电大学 A kind of LEO Satellite switching method
CN110582094A (en) * 2019-07-25 2019-12-17 成都天奥集团有限公司 Timing trigger switching method based on ephemeris and user position calculation
CN111371486A (en) * 2020-03-02 2020-07-03 北京紫光展锐通信技术有限公司 Method, system, device and storage medium for beam switching based on low earth orbit satellite
CN112054823A (en) * 2020-09-10 2020-12-08 重庆邮电大学 Low-earth-orbit satellite communication switching method
CN112821941A (en) * 2021-01-14 2021-05-18 重庆邮电大学 Pre-switching method for multi-beam low-orbit satellite communication system
CN113079546A (en) * 2020-01-03 2021-07-06 大唐移动通信设备有限公司 Method and device for switching between low-orbit satellites
CN113258987A (en) * 2021-05-13 2021-08-13 重庆邮电大学 Communication switching method between low-orbit satellite reverse seams
EP3905546A1 (en) * 2020-04-30 2021-11-03 Panasonic Intellectual Property Corporation of America User equipment and base station
US11206078B1 (en) * 2020-05-28 2021-12-21 Amazon Technologies, Inc. System for low-latency satellite subbeam handover
CN114157337A (en) * 2021-11-02 2022-03-08 西安电子科技大学 Low-orbit satellite inter-satellite switching prediction method based on time-varying graph
US11336364B1 (en) * 2020-04-13 2022-05-17 Amazon Technologies, Inc. System for low-latency satellite communication handover

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9942813B2 (en) * 2016-06-20 2018-04-10 The Boeing Company Coordinating inter-satellite handoff in a telecommunications system
BR112020014846A2 (en) * 2018-01-19 2020-12-08 Hughes Network Systems, Llc USER TERMINAL TRANSFER FORECAST IN WIRELESS COMMUNICATION SYSTEMS WITH NON-STATIONARY COMMUNICATION PLATFORMS
US11082903B2 (en) * 2018-12-03 2021-08-03 Electronics And Telecommunications Research Institute Method for handover in non-terrestrial network, and apparatus for the same
US20210136641A1 (en) * 2019-11-05 2021-05-06 Mediatek Singapore Pte. Ltd. Synchronized Handover without Random Access in LEO-NTN

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014124753A1 (en) * 2013-02-13 2014-08-21 Overhorizon (Cyprus) Plc Method for shifting communications of a terminal located on a moving platform from a first to a second satellite antenna beam.
CN108366400A (en) * 2018-01-24 2018-08-03 北京邮电大学 A kind of empty day network switching real-time predicting method based on time evolution figure
CN110072264A (en) * 2019-05-28 2019-07-30 重庆邮电大学 A kind of LEO Satellite switching method
CN110582094A (en) * 2019-07-25 2019-12-17 成都天奥集团有限公司 Timing trigger switching method based on ephemeris and user position calculation
CN113079546A (en) * 2020-01-03 2021-07-06 大唐移动通信设备有限公司 Method and device for switching between low-orbit satellites
CN111371486A (en) * 2020-03-02 2020-07-03 北京紫光展锐通信技术有限公司 Method, system, device and storage medium for beam switching based on low earth orbit satellite
US11336364B1 (en) * 2020-04-13 2022-05-17 Amazon Technologies, Inc. System for low-latency satellite communication handover
EP3905546A1 (en) * 2020-04-30 2021-11-03 Panasonic Intellectual Property Corporation of America User equipment and base station
US11206078B1 (en) * 2020-05-28 2021-12-21 Amazon Technologies, Inc. System for low-latency satellite subbeam handover
CN112054823A (en) * 2020-09-10 2020-12-08 重庆邮电大学 Low-earth-orbit satellite communication switching method
CN112821941A (en) * 2021-01-14 2021-05-18 重庆邮电大学 Pre-switching method for multi-beam low-orbit satellite communication system
CN113258987A (en) * 2021-05-13 2021-08-13 重庆邮电大学 Communication switching method between low-orbit satellite reverse seams
CN114157337A (en) * 2021-11-02 2022-03-08 西安电子科技大学 Low-orbit satellite inter-satellite switching prediction method based on time-varying graph

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
低轨卫星通信系统中的一种波束小区切换算法;沈俊;陈曦;赵新胜;;电讯技术(04);全文 *
空间网络低轨星座信道分配策略研究;廖明霞;《中国优秀博士学位论文全文数据库 信息科技辑》;全文 *

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