CN114142914B - Beam closing group switching method for low orbit satellite - Google Patents
Beam closing group switching method for low orbit satellite Download PDFInfo
- Publication number
- CN114142914B CN114142914B CN202111474818.3A CN202111474818A CN114142914B CN 114142914 B CN114142914 B CN 114142914B CN 202111474818 A CN202111474818 A CN 202111474818A CN 114142914 B CN114142914 B CN 114142914B
- Authority
- CN
- China
- Prior art keywords
- switching
- closed
- terminal
- terminals
- target
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention belongs to the technical field of mobility management of low-orbit satellite mobile communication, and particularly relates to a beam closing group switching method for a low-orbit satellite, which comprises the following steps: acquiring beam closing information; the position server judges whether the beam to be closed has terminal access according to the beam closing information, and if so, the position server executes a switching strategy; if no terminal is accessed, judging whether the beam to be closed is on a switching path of a certain terminal, if not, judging whether the beam to be closed is in a receiving area measurement list of the terminal, and if not, ending; otherwise, updating the beam neighbor list to finish the switching process; the method can meet the scene that a large number of terminals are switched due to the fact that the beam is closed, comprehensively considers the switching performance of the whole constellation system, and improves the switching success rate.
Description
Technical Field
The invention belongs to the technical field of mobile communication mobility management of low-orbit satellites, and particularly relates to a beam closing group switching method for low-orbit satellites.
Background
The low-orbit satellite constellation has the characteristics of low signal delay, high power and global seamless coverage, and is rapidly developed along with the hot trend of the Internet of the low-orbit satellites at home and abroad. On one hand, because the low-orbit satellite has high motion speed, the number of single satellite beams is large, and the overhead time of single satellites and single beams is short, the user needs to perform frequent noninductive switching to keep continuous communication with good QOS; on the other hand, transmission switching is also caused by factors such as interference. An excellent switching strategy and technology can reduce switching time delay and switching frequency, improve channel utilization rate and the like, and can improve system service performance.
At present, a low orbit satellite constellation is mainly a polar orbit constellation, and in a polar region, a large number of beams can generate serious interference due to convergence of a plurality of track surfaces, so that the constellation needs to turn off the beams according to a certain strategy in a region close to the polar region. When the beam is closed, if the beam is not closed immediately, the access network controller can switch the connection state terminal which can not be automatically switched to other beams before the beam is closed in advance, and the access network controller inquires the position server of the terminal of the type of the terminal to switch the beam and executes a switching process. In the above switching process, closing the beam affects the switching scheme of the original access terminal under the beam and the switching scheme to be switched into the beam terminal; there is thus an urgent need for a handover strategy for switching off the beam resulting in a handover of the terminal.
Disclosure of Invention
In order to solve the above problems in the prior art, the present invention provides a beam-off group switching method for a low-orbit satellite, which includes:
s1: the access network controller acquires beam closing information from the network management and sends the acquired information to the position server;
s2: the position server judges whether the beam to be closed has terminal access according to the beam closing information, if so, the step S3 is executed, if not, the beam to be closed is judged to be on the switching path of a certain terminal, if not, the beam to be closed is judged to be in the neighbor cell measurement list of the terminal, and if not, the beam to be closed is judged to be ended; otherwise, updating the beam neighbor list;
s3: setting a threshold t; judging whether the difference between the current time and the beam to-be-closed time is smaller than a set threshold t or not; if the position is smaller than t, adopting a switching strategy based on the position; if the switching strategy is larger than t, adopting a switching strategy based on measurement;
s4: after executing the switching strategy, the location server initiates the processes of updating system information, updating wave beams and updating measurement configuration.
Preferably, the acquired beam-off information includes: the satellite ID and beam ID of the beam are turned off.
Preferably, the process of the location server determining whether the beam to be closed has terminal access according to the beam closing information includes: the position server receives the satellite ID and the beam ID of the closed beam; determining the position of the beam according to the received satellite ID of the closed beam, the beam ID and ephemeris information in the position server; and comparing the position information of the wave beam with the position information of the terminal in the position server, if the position information is the same, accessing the wave beam to be closed by the terminal, otherwise, accessing the wave beam by the terminal.
Preferably, the process of setting the threshold t includes: acquiring measurement report signaling interaction time t between satellite terminal and access network controller 1 Time t of interaction of switching signaling 2 Signaling interaction time t in switching process of access network controller and location server 3 Time t for location server to execute handover strategy 4 The method comprises the steps of carrying out a first treatment on the surface of the The set threshold time is: t is greater than or equal to t 1 +t 2 +t 3 +t 4 。
Preferably, employing a location-based handover strategy includes: the access network controller sends a beam deletion instruction to the position server, and the position server indicates the switching mode as a position-based switching mode after receiving the beam deletion instruction; the position server judges a switching target beam of the closed beam through a switching judgment algorithm based on the position information; obtaining the number of current connection terminals of the Target Beam and the number of terminals to be switched to the Target Beam when the Beam is closed, and summing the number of the current connection terminals of the Target Beam and the number of the terminals to be switched to the Target Beam to obtain the total number of terminals, namely Target Beam UE; judging whether Target Beam UE is larger than the number of accessible terminals of the Target Beam, if the Target Beam UE is larger than the number of accessible terminals of the Target Beam, updating the Target Beam of part of terminals into other beams by a position server according to the position of the terminal, and judging whether the closed Beam is on a switching path of a certain terminal; if not, judging whether the beam to be closed exists in a neighbor cell measurement list of the terminal, and if not, ending; otherwise, updating the beam neighbor list.
Further, a deleting time cell and a handover mode cell are set in the beam deleting instruction sent by the access network controller; the deletion time cell is used for indicating the beam closing time; the handover mode cell is for the access network to indicate a handover mode of the location server.
Preferably, employing a measurement-based handover strategy includes: the access network controller sends a beam deletion instruction to the position server, and the position server indicates the switching mode as a self-adaptive switching mode after receiving the beam deletion instruction; the position server acquires a switching target beam of the closed beam by adopting a switching decision algorithm based on the self-adaptive measurement report and the position information; obtaining the number of current connection terminals of the Target Beam and the number of terminals to be switched to the Target Beam when the Beam is closed, and summing the number of the current connection terminals of the Target Beam and the number of the terminals to be switched to the Target Beam to obtain the total number of terminals, namely Target Beam UE; judging whether Target Beam UE is larger than the number of accessible terminals of the Target Beam, if the Target Beam UE is larger than the number of accessible terminals of the Target Beam, updating the Target Beam of part of terminals into other beams by a position server according to signal strength or service time, and judging whether the closed Beam is in a neighbor cell measurement list of a certain terminal; if not, directly judging whether the closed wave beam is in the neighbor cell measurement list of a certain terminal, if not, ending; otherwise, updating the beam neighbor list.
Further, the adaptive measurement report and the location information include: the measurement Report is a measurement Report of the 3GPP standard; the location information includes a terminal ID and a latitude and longitude of the terminal, and if the switching method adopts location judgment, the location cell is required to belong to.
Further, the location server indicates the access network controller through the neighbor beam list in the neighbor beam update indication message.
The invention has the advantages that:
1) In the beam closing group switching method, the beam closing information can be acquired in advance based on the characteristics of a constellation network, and the network is enabled to trigger switching in advance by adding the beam closing time information element, so that the switching accuracy of the terminal is ensured;
2) According to the scheme, the requirements of various switching algorithms can be met through strategy selection according to the beam closing time;
3) The scheme adopts a group switching mode, and after the network is subjected to resource integration optimization, the number of terminals of the same target beam is controlled, so that congestion caused by switching of a large number of terminals due to beam closing is prevented;
4) The scheme not only considers the terminal for providing service by closing the beam, but also considers that the closing beam possibly exists in a certain terminal switching path or a neighbor measurement list, and describes how to update the related list.
Drawings
FIG. 1 is a flow chart of the beam-based switch-off signaling of the present invention;
fig. 2 is a flow chart of a beam-based off-switch algorithm according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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 invention discloses a group switching scheme in a group switching scheme based on beam closing, which combines a switching scheme based on position and measurement, uses a switching mechanism based on group, aims at a scene that a low-orbit satellite moves to a bipolar area and a network actively closes a beam due to interference generated by a large number of beams, and provides a switching scheme suitable for switching between low-orbit satellites and in satellites based on beam closing by modifying a signaling format, adding cells and setting a time threshold value.
A beam-off group handoff method for a low-orbit satellite, as shown in fig. 1, the method comprising:
s1: the access network controller acquires beam closing information from the network management and sends the acquired information to the position server;
s2: the position server judges whether the beam to be closed has terminal access according to the beam closing information, if so, the step S3 is executed, if not, the beam to be closed is judged to be on the switching path of a certain terminal, if not, the beam to be closed is judged to be in the neighbor cell measurement list of the terminal, and if not, the beam to be closed is judged to be ended; otherwise, updating the beam neighbor list;
s3: setting a threshold t; judging whether the difference between the current time and the beam to-be-closed time is smaller than a set threshold t or not; if the position is smaller than t, adopting a switching strategy based on the position; if the switching strategy is larger than t, adopting a switching strategy based on measurement;
s4: after executing the switching strategy, the location server initiates the processes of updating system information, updating wave beams and updating measurement configuration.
An embodiment of a beam-off group handoff method for a low-orbit satellite, comprising: a switching mechanism of self-adaptive multi-strategy; the mechanism is applicable to handovers due to beam switching off. According to the beam closing information, a terminal under the beam is switched to other beams in advance in a group switching mode, meanwhile, the terminal to be switched into the beam is configured and updated through signaling, and the specific steps of a group switching scheme based on beam closing are as follows:
step A, the access network controller obtains beam closing information (periodically updated) from the network manager and pushes the beam closing information to the position server; the location server determines if there is terminal access in the beam to be turned off.
And B, if not, judging whether a terminal to be cut into the wave beam exists, and if not, ending the flow.
Step C, if a terminal is accessed, judging whether the difference between the current moment and the beam closing moment is smaller than t; more than t uses a measurement-based handover strategy and less than t uses a location-based handover strategy; in executing the handover policy, the target beam of the handover is judged by the location server, which instructs the access network controller through a handover List IE in the UE List in a NEIGHBOR BEAMS UPDATE INDICATION (neighbor beam update instruction) message.
If no terminal is accessed, but there is a terminal to be switched into the beam, the position server updates the beam neighbor List, and the position server indicates the access network controller through Neighbor BeamList IE (neighbor beam List) in the UE List in NEIGHBOR BEAMS UPDATE INDICATION (neighbor beam update indication) message.
And E, the access network controller initiates a system information updating flow, a beam switching flow and a measurement configuration updating flow.
As a preferred technical solution of the present invention, the location server performs handover decision according to beam closing information, and the specific process includes: the network can obtain the beam-off information in advance, in this embodiment, delay Time (Delete Time) cells are added in BEAMS DELETE INDICATIO (beam Delete indication) messages for indicating the beam-off Time and Handover Mode cells for informing the access network of the location server of the Handover Mode.
1) If based on the location Handover (the Handover Mode is valued as locationbased), the location server should update the Handover list of the following terminals: a) Closing the terminal under the wave beam; b) The handover path includes the terminal turning off the beam. The location server instructs the access network controller via the UE List in the NEIGHBOR BEAMS UPDATE INDICATION message. Neighbor BeamList IE in the UE List in this scenario need not be carried. Beam List may carry Beam reselection for Idle state terminals.
2) If the measurement Handover (Handover Mode is measured based), the location server should determine the target beam for switching off the terminal under the beam, instruct the access network controller through UE List in NEIGHBOR BEAMS UPDATE INDICATION message, determine the terminal containing the beam in the measurement beam List, update its measurement beam List, and instruct the access network through UE List. Beam List may carry Beam reselection for Idle state terminals.
3) If the position server determines the target beam switched by the terminal under the closed beam based on the integrated Mode switching (Handover Mode value is integrated), and indicates the access network controller through the UE List in the NEIGHBOR BEAMS UPDATE INDICATION message, the position server needs to determine the terminal containing the closed beam in the measurement beam List, update the measurement beam List, and indicate the access network through the UE List. Beam List may carry Beam reselection for Idle state terminals.
As shown in fig. 2, employing a location-based handoff strategy includes: the access network controller sends a beam deletion instruction to the position server, and the position server indicates the switching mode as a position-based switching mode after receiving the beam deletion instruction; the position server judges a switching target beam of the closed beam through a switching judgment algorithm based on the position information; obtaining the number of current connection terminals of the Target Beam and the number of terminals to be switched to the Target Beam when the Beam is closed, and summing the number of the current connection terminals of the Target Beam and the number of the terminals to be switched to the Target Beam to obtain the total number of terminals, namely Target Beam UE; judging whether Target Beam UE is larger than the number of accessible terminals of the Target Beam, if the Target Beam UE is larger than the number of accessible terminals of the Target Beam, updating the Target Beam of part of terminals into other beams by a position server according to the position of the terminal, and judging whether the closed Beam is on a switching path of a certain terminal; if not, judging whether the beam to be closed exists in a neighbor cell measurement list of the terminal, and if not, ending; otherwise, updating the beam neighbor list.
The process of determining the switching target beam of the closed beam by the switching decision algorithm according to the position information position server comprises the following steps: and calculating an RSS average value of the signal intensity of the switching beam according to the position information of the server, comparing the calculated RSS average value with a switching judgment threshold set in an algorithm, taking the switching beam as a switching target of the closing beam if the RSS average value meets the set switching judgment threshold, and taking the switching beam as a switching target of the closing beam if the RSS average value does not meet the set switching judgment threshold.
The adoption of the measurement-based switching strategy comprises the following steps: the access network controller sends a beam deletion instruction to the position server, and the position server indicates the switching mode as a self-adaptive switching mode after receiving the beam deletion instruction; the position server acquires a switching target beam of the closed beam by adopting a switching decision algorithm based on the self-adaptive measurement report and the position information; obtaining the number of current connection terminals of the Target Beam and the number of terminals to be switched to the Target Beam when the Beam is closed, and summing the number of the current connection terminals of the Target Beam and the number of the terminals to be switched to the Target Beam to obtain the total number of terminals, namely Target Beam UE; judging whether Target Beam UE is larger than the number of accessible terminals of the Target Beam, if the Target Beam UE is larger than the number of accessible terminals of the Target Beam, updating the Target Beam of part of terminals into other beams by a position server according to signal strength or service time, and judging whether the closed Beam is in a neighbor cell measurement list of a certain terminal; if not, directly judging whether the closed wave beam is in the neighbor cell measurement list of a certain terminal, if not, ending; otherwise, updating the beam neighbor list.
The process of setting the threshold t comprises the following steps: if t is the time threshold value, the measurement report signaling interaction between the satellite terminal and the access network controller is set as t 1 The interaction time of the switching signaling is t 2 The signaling interaction time in the switching process of the access network controller and the position server is t 3 The time for the location server to execute the switching strategy is t 4 (including time of switching flow, switching decision and updating beam list, etc.), the set time threshold is:
t≥t 1 +t 2 +t 3 +t 4
if the current time T is more than or equal to T, the network can support to complete the switching based on measurement, and the network can adopt a mode of combining a measurement report and position information or simply carry out switching judgment of a target wave beam based on the measurement report or the position information.
If the current time t>T≥t 2 +t 3 +t 4 The measurement-based switching can be completed without support, but the position-based switching can be completed, the network plans the switching path in advance based on the position information, and the switched target beam is judged.
If the current time t 2 +t 3 +t 4 >And T, the network performs switching based on the position information, but the switching failure is very probable.
The specific implementation mode of the beam maximum connection number switching judgment scheme based on the group comprises the following steps:
the beam is closed to possibly cause a large number of terminals to be switched under the beam, the adjacent beams of the beam are limited, terminal connection exists in the adjacent beams, switching congestion is easy to occur to cause switching failure, the scheme is used for grouping through the target beam ID, resource optimization is carried out on a position server, and the probability of switching failure is reduced.
After the target beam is judged by the switching algorithm, the UE terminals with the same target beam are divided into a group Cluster 1, and a corresponding UE List contains all terminals of the group.
Counting Cluster, obtaining the number Target Beam Register of connected terminals under the Target Beam, wherein the number of the terminals of the Target Beam after switching is Target Beam UE, and planning the maximum connectable terminal number of the Target Beam according to a constellation network Max The following steps are:
Count(Cluster)+Target Beam Register＝Target Beam UE
wherein Count represents the number of Target Beam current connection terminals calculated, cluster represents the number of Target Beam current connection terminals to be switched to, target Beam Register represents the number of Target Beam terminals to be switched to, and Target Beam UE represents the sum of the number of Target Beam current connection terminals and the number of Target Beam terminals to be switched to.
If Target Beam UE>Target Beam UE Max And changing the target beams of part of terminals into other beams according to a judgment algorithm of the handle Mode value for the UE in the group. The modified terminal should have the following features:
1) More than two beams than the current service beam can provide service for the terminal;
2) The signal strength value of the original target beam measured by the terminal of the changed target beam is lower or the service time is shorter than that of the terminal which is not changed.
The invention aims to provide a group switching scheme based on beam closing, which can meet various low-orbit constellation switching systems by acquiring beam closing information in advance and adaptively selecting a switching strategy based on a measurement report and position information based on the characteristics of low-orbit satellite communication. And dividing groups according to the target beam, and performing group switching. The scheme can meet the scene that a large number of terminals are switched due to the fact that the beam is closed, comprehensively considers the switching performance of the whole constellation system, and improves the switching success rate.
While the foregoing is directed to embodiments, aspects and advantages of the present invention, other and further details of the invention may be had by the foregoing description, it will be understood that the foregoing embodiments are merely exemplary of the invention, and that any changes, substitutions, alterations, etc. which may be made herein without departing from the spirit and principles of the invention.
Claims (8)
1. A beam-off group handoff method for a low-orbit satellite, comprising:
s1: the access network controller acquires beam closing information from the network management and sends the acquired information to the position server;
s2: the position server judges whether the beam to be closed has terminal access according to the beam closing information, if so, the step S3 is executed, if not, the beam to be closed is judged to be on the switching path of a certain terminal, if not, the beam to be closed is judged to be in the neighbor cell measurement list of the terminal, and if not, the beam to be closed is judged to be ended; otherwise, updating the beam neighbor list;
s3: setting a threshold t; judging whether the difference between the current time and the beam to-be-closed time is smaller than a set threshold t or not; if the current time T is less than T, adopting a switching strategy based on the position; if the current time T is more than or equal to T, adopting a switching strategy based on measurement;
s4: after executing the switching strategy, the location server initiates the processes of updating system information, updating wave beams and updating measurement configuration.
2. The beam-closing group switching method for a low-orbit satellite according to claim 1, wherein the acquired beam-closing information includes: the satellite ID and beam ID of the beam are turned off.
3. The beam-off group switching method for low-orbit satellites according to claim 1, wherein the process of the location server determining whether the beam to be turned off has terminal access according to the beam-off information comprises: the position server receives the satellite ID and the beam ID of the closed beam; determining the position of the beam according to the received satellite ID of the closed beam, the beam ID and ephemeris information in the position server; and comparing the position information of the wave beam with the position information of the terminal in the position server, if the position information is the same, accessing the wave beam to be closed by the terminal, otherwise, accessing the wave beam by the terminal.
4. The beam-closing group switching method for low-orbit satellites according to claim 1, wherein the process of setting the threshold t comprises: acquiring measurement report signaling interaction time t between satellite terminal and access network controller 1 Time t of interaction of switching signaling 2 Signaling interaction time t in switching process of access network controller and location server 3 Time t for location server to execute handover strategy 4 The method comprises the steps of carrying out a first treatment on the surface of the The set threshold time is:
t≥t 1 +t 2 +t 3 +t 4 。
5. the beam-closing group switching method for low-orbit satellites according to claim 1 wherein employing a location-based switching strategy comprises: the access network controller sends a beam deletion instruction to the position server, and the position server indicates the switching mode as a position-based switching mode after receiving the beam deletion instruction; determining a switching target beam of a closed beam through a switching decision algorithm according to the position information position server; obtaining the number of current connection terminals of the Target Beam and the number of terminals to be switched to the Target Beam when the Beam is closed, and summing the number of the current connection terminals of the Target Beam and the number of the terminals to be switched to the Target Beam to obtain the total number of terminals, namely Target Beam UE; judging whether Target Beam UE is larger than the number of accessible terminals of the Target Beam, if the Target Beam UE is larger than the number of accessible terminals of the Target Beam, updating the Target Beam of part of terminals into other beams by a position server according to the position of the terminal, and judging whether the closed Beam is on a switching path of a certain terminal; if not, judging whether the beam to be closed exists in a neighbor cell measurement list of the terminal, and if not, ending; otherwise, updating the beam neighbor list.
6. The beam-off group switching method for low-orbit satellites as claimed in claim 5, wherein a deletion time cell and a handover mode cell are set in the beam deletion instruction transmitted by the access network controller; the deletion time cell is used for indicating the beam closing time; the handover mode cell is for the access network to indicate a handover mode of the location server.
7. The beam-closing group switching method for low-orbit satellites according to claim 1 wherein employing a measurement-based switching strategy comprises: the access network controller sends a beam deletion instruction to the position server, and the position server indicates the switching mode as a self-adaptive switching mode after receiving the beam deletion instruction; the position server acquires a switching target beam of the closed beam by adopting a switching decision algorithm based on the self-adaptive measurement report and the position information; obtaining the number of current connection terminals of the Target Beam and the number of terminals to be switched to the Target Beam when the Beam is closed, and summing the number of the current connection terminals of the Target Beam and the number of the terminals to be switched to the Target Beam to obtain the total number of terminals, namely Target Beam UE; judging whether Target Beam UE is larger than the number of accessible terminals of the Target Beam, if the Target Beam UE is larger than the number of accessible terminals of the Target Beam, updating the Target Beam of part of terminals into other beams by a position server according to signal strength or service time, and judging whether the closed Beam is in a neighbor cell measurement list of a certain terminal; if not, directly judging whether the closed wave beam is in the neighbor cell measurement list of a certain terminal, if not, ending; otherwise, updating the beam neighbor list.
8. A beam-closing group switching method for a low orbit satellite according to any one of claims 5 to 7, wherein the location server instructs the access network controller via the neighbor beam list in the neighbor beam update indication message.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111474818.3A CN114142914B (en) | 2021-12-06 | 2021-12-06 | Beam closing group switching method for low orbit satellite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111474818.3A CN114142914B (en) | 2021-12-06 | 2021-12-06 | Beam closing group switching method for low orbit satellite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114142914A CN114142914A (en) | 2022-03-04 |
| CN114142914B true CN114142914B (en) | 2023-06-27 |
Family
ID=80384407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111474818.3A Active CN114142914B (en) | 2021-12-06 | 2021-12-06 | Beam closing group switching method for low orbit satellite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114142914B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112822696A (en) * | 2021-01-14 | 2021-05-18 | 重庆邮电大学 | User position-based low-orbit satellite beam closing method |
| CN113472424A (en) * | 2021-06-30 | 2021-10-01 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Different-frequency measurement switching device for ephemeris-assisted flexible switch multi-satellite coverage area |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10075886B2 (en) * | 2016-03-14 | 2018-09-11 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and device for beam switching |
-
2021
- 2021-12-06 CN CN202111474818.3A patent/CN114142914B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112822696A (en) * | 2021-01-14 | 2021-05-18 | 重庆邮电大学 | User position-based low-orbit satellite beam closing method |
| CN113472424A (en) * | 2021-06-30 | 2021-10-01 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Different-frequency measurement switching device for ephemeris-assisted flexible switch multi-satellite coverage area |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114142914A (en) | 2022-03-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11483720B2 (en) | Communications device and method | |
| US20230025432A1 (en) | Methods, ue and first network node for handling mobility information in a communications network | |
| RU2482630C2 (en) | Mechanism for automated reconfiguration of access network element | |
| US20080176566A1 (en) | Handover control system, method for the same, and mobile communication system and radio base station using the same | |
| US20090275334A1 (en) | Method, system, terminal, access node and gateway for handing over terminal to macrocell | |
| US20040102195A1 (en) | Broadcasting in a communication system | |
| EP2475198A1 (en) | Path selecting apparatus and mobile wireless communication system | |
| WO2000038466A1 (en) | Improved cdma soft hand-off | |
| EP2206378A1 (en) | Speed-dependent adaptation of mobility parameters with dual speed measurement | |
| US9344941B2 (en) | Autonomous cell reselection by a user equipment | |
| CN109600761B (en) | Method of wireless communication | |
| CN102307375B (en) | Switching method and system between different networks and eHRPD network | |
| US10104595B2 (en) | Method of automatically adjusting mobility parameter | |
| KR101190860B1 (en) | Method of optimal handover based on wireless link quality of user equipment | |
| US20230261739A1 (en) | Mobility management method and device | |
| WO2022120841A1 (en) | Method and apparatus for determining candidate target cell, device, and computer storage medium | |
| WO2004036950A1 (en) | Transmission method in a communication system | |
| KR20070060796A (en) | The active set management method of mobile terminal on ofdma-tdma based high-speed portable internet system | |
| Ahmad et al. | An efficient handover decision in heterogeneous LTE-A networks under the assistance of users’ profile | |
| Ahmad et al. | Efficient handover in LTE-A by using mobility pattern history and user trajectory prediction | |
| CN114095073A (en) | Seamless switching method in 5G satellite fusion scene | |
| KR100571785B1 (en) | System and method for processing hand-over of next generation network | |
| CN114142914B (en) | Beam closing group switching method for low orbit satellite | |
| KR100943759B1 (en) | Apparatus and method for link layer triggering for vertical handover | |
| KR20150029060A (en) | Apparatus for controlling access of terminal and method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 401120 39-1, Building 1, No. 64, Middle Huangshan Avenue, Yubei District, Chongqing Patentee after: China Star Network Application Co.,Ltd. Address before: 618 Liangjiang Avenue, Longxing Town, Yubei District, Chongqing Patentee before: Dongfanghong Satellite Mobile Communication Co.,Ltd. |
|
| CP03 | Change of name, title or address |