CN112714479A - Satellite remote station dual-homing switching method and device and dual-homing satellite remote station - Google Patents
Satellite remote station dual-homing switching method and device and dual-homing satellite remote station Download PDFInfo
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- CN112714479A CN112714479A CN202110093409.2A CN202110093409A CN112714479A CN 112714479 A CN112714479 A CN 112714479A CN 202110093409 A CN202110093409 A CN 202110093409A CN 112714479 A CN112714479 A CN 112714479A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18539—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
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- 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
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Abstract
A satellite remote station dual-homing switching method, a device and a dual-homing satellite remote station are provided, the method comprises the steps of presetting carrier parameters of a first main station and a second main station, so that the remote station normally locks carriers of the first main station and the second main station; the remote station receives the forward carrier signals of the first main station and the second main station at the same time, performs attribution judgment according to the signal quality of the carrier signals, and performs attribution switching according to the judgment result. The method is characterized in that the method supports double-master-station broadcast channel receiving, the terminal equipment affiliation of a remote station is managed by two different master stations, the double-channel receiving of the side of the end station forms a master-slave relationship, the equipment of the end station automatically detects the forward channel serviceability of the master station, the equipment of a certain master station automatically switches the master station affiliation according to preset conditions after the end station cannot use service due to disasters or rain attenuation, user service data are automatically switched to a reachable master station link, the end station only needs one set of equipment and does not need the master station to actively participate, and the deployment cost is greatly reduced.
Description
Technical Field
The invention relates to a satellite communication technology, in particular to a satellite remote station dual-homing switching method and device and a dual-homing satellite remote station.
Background
Three networking topologies are used in a typical satellite communications network: star, net, star-net hybrid.
Each end station in the star-type networking receives a forward TDM communication channel of a main station and establishes communication connection with the main station. In the implementation of the existing equipment, end station equipment only supports forward channel reception of one master station, so that one end station equipment can only access a management network under one master station, and when a master station equipment system fails, all end stations cannot normally provide services.
Problem scenario 1: satellite communication is widely applied to emergency communication due to wide coverage at low cost, a disaster recovery scenario is a main target market, and a multi-device stacking mode is mainly used in an end station reliability protection scheme under a main station fault scenario at present.
Problem scenario 2: the frequency spectrum of satellite communication is gradually high-frequency, and the interruption of terminal service in the whole network can be caused when rain attenuation exists at the main station side.
The reliability protection solutions under the above two scenarios are both high in cost.
Disclosure of Invention
The invention mainly aims at the defects of the prior art and provides a satellite remote station dual-homing switching method, a satellite remote station dual-homing switching device and a dual-homing satellite remote station, which simultaneously support the receiving of broadcast channels of dual master stations, the terminal equipment of the remote station is under the control of two different master stations, the dual-channel receiving of the side of the end station forms a master-slave relationship, the end station equipment automatically detects the forward channel serviceability of the master stations, the end station equipment automatically switches the master station homing of a certain master station according to preset conditions after the service is unavailable due to disasters or rain attenuation, the user service data is automatically switched to a reachable master station link, the end station only needs one set of equipment and does not need to actively participate, and the deployment cost is greatly reduced.
In order to achieve the above object, the present invention employs the following techniques:
a satellite remote station dual-homing switching method comprises the following steps:
s1, presetting carrier parameters of the first master station and the second master station so that the terminal equipment of the remote station can normally lock the carriers of the first master station and the second master station;
s2, the terminal equipment of the remote station receives the forward carrier signals of the first master station and the second master station at the same time;
s3, the terminal equipment of the remote station judges the attribution according to the signal quality of the received carrier signal, and switches the attribution according to the judgment result:
judging whether a carrier signal of a master station which has currently established a link with terminal equipment of a remote station is lower than a preset receiving threshold or not, wherein the master station which has currently established the link with the terminal equipment of the remote station is one of a first master station and a second master station;
if the signal loss-of-lock duration time is less than the preset loss-of-lock time threshold, further judging whether the signal loss-of-lock duration time of a master station which has currently established a link with the terminal equipment of the remote station is greater than the preset loss-of-lock time threshold;
and if the current time is greater than the preset lock losing time threshold, performing attribution switching, switching the terminal equipment of the remote station to establish a link with the other one of the first master station and the second master station, and then returning to S3 for circular execution.
Further, in S3, when performing the attribution determination, if the received signal is not lower than the preset receiving threshold and the signal lock losing duration is greater than the preset lock losing time threshold at the same time, the established link is kept temporarily not to be switched, and then the method returns to S3 to perform the loop execution.
Further, the carrier parameters include frequency point, bandwidth, FEC, and modulation method.
Further, the preset receiving threshold comprises a preset demodulation threshold and a preset power threshold, and the specific value is set according to different carrier bandwidths and modulation modes;
in S3, determining whether the carrier signal is lower than a preset receiving threshold includes determining whether the received carrier signal is lower than a preset demodulation threshold and a preset power threshold at the same time:
if the signal loss lock duration time is less than the preset loss lock duration threshold, further judging whether the signal loss lock duration time is greater than the preset loss lock time threshold;
if not, no further determination is continued, and then the process returns to S3 to perform the loop.
A satellite remote station dual-homing switching apparatus, comprising:
the parameter presetting module is used for presetting carrier parameters of the first master station and the second master station so that the terminal equipment of the remote station can normally lock carriers of the first master station and the second master station;
and the attribution judging module is used for judging attribution according to the signal quality of the carrier signals of the first main station and the second main station simultaneously received by the terminal equipment of the remote station: judging whether a carrier signal of a master station which has currently established a link with terminal equipment of a remote station is lower than a preset receiving threshold or not, wherein the master station which has currently established the link with the terminal equipment of the remote station is one of a first master station and a second master station; if the signal loss-of-lock duration time is less than the preset loss-of-lock time threshold, further judging whether the signal loss-of-lock duration time of a master station which has currently established a link with the terminal equipment of the remote station is greater than the preset loss-of-lock time threshold; if the time is greater than the preset lock losing time threshold, performing attribution switching, switching the terminal equipment of the remote station to establish a link with the other master station of the first master station and the second master station, and then circularly executing attribution judgment.
A satellite remote station dual-homing switching method is applied to a remote station and comprises the following steps:
s1, receiving forward carrier signals of the first master station and the second master station at the same time; the first master station and the second master station are two master stations normally locked by terminal equipment of the remote station, and the normal locking is realized by presetting carrier parameters of the first master station and the second master station;
s2, performing attribution judgment according to the signal quality of the received carrier signal, and judging whether the carrier signal of a main station which has currently established a link with the terminal equipment of the remote station is lower than a preset receiving threshold, wherein the main station which has currently established the link with the terminal equipment of the remote station is one of a first main station and a second main station;
if the signal loss-of-lock duration time is less than the preset loss-of-lock time threshold, further judging whether the signal loss-of-lock duration time of a master station which has currently established a link with the terminal equipment of the remote station is greater than the preset loss-of-lock time threshold;
and if the current time is greater than the preset lock losing time threshold, performing attribution switching, switching the terminal equipment of the remote station to establish a link with the other one of the first master station and the second master station, and then returning to S2 for circular execution.
A dual-homing switching device for a remote satellite station, which is integrated with the remote satellite station, comprises:
the receiving module is used for simultaneously receiving forward carrier signals of the first master station and the second master station; the first master station and the second master station are two master stations normally locked by terminal equipment of the remote station, and the normal locking is realized by presetting carrier parameters of the first master station and the second master station;
a switching module, configured to perform attribution determination according to the signal quality of the received carrier signal: judging whether a carrier signal of a master station which has currently established a link with terminal equipment of a remote station is lower than a preset receiving threshold or not, wherein the master station which has currently established the link with the terminal equipment of the remote station is one of a first master station and a second master station; if the signal loss-of-lock duration time is less than the preset loss-of-lock time threshold, further judging whether the signal loss-of-lock duration time of a master station which has currently established a link with the terminal equipment of the remote station is greater than the preset loss-of-lock time threshold; if the time is greater than the preset lock losing time threshold, performing attribution switching, switching the terminal equipment of the remote station to establish a link with the other master station of the first master station and the second master station, and then circularly executing attribution judgment.
A terminal device of a remote station normally locks a first master station and a second master station, and the normal locking is realized by presetting carrier parameters of the first master station and the second master station;
the remote station is used for receiving forward carrier signals of the first master station and the second master station simultaneously;
the remote station is further configured to make a homing decision based on the signal quality of the received carrier signal: judging whether a carrier signal of a master station which has currently established a link with terminal equipment of a remote station is lower than a preset receiving threshold or not, wherein the master station which has currently established the link with the terminal equipment of the remote station is one of a first master station and a second master station; if the signal loss-of-lock duration time is less than the preset loss-of-lock time threshold, further judging whether the signal loss-of-lock duration time of a master station which has currently established a link with the terminal equipment of the remote station is greater than the preset loss-of-lock time threshold; if the time is greater than the preset lock losing time threshold, performing attribution switching, switching the terminal equipment of the remote station to establish a link with the other master station of the first master station and the second master station, and then circularly executing attribution judgment.
An electronic device, comprising: at least one processor and memory; wherein the memory stores computer execution instructions; the computer-executable instructions stored in the memory, when executed by the at least one processor, cause the at least one processor to perform a method for dual-homing satellite remote station handoff.
A computer-readable storage medium having stored thereon a computer program which, when executed by a processor, controls an apparatus in which the storage medium is located to perform a method for dual-homing satellite remote stations.
The invention has the beneficial effects that:
1. in the prior art, two independent modems are used for receiving by the double master stations, and the backward carrier wave simultaneously occupies signaling channels of the two master stations; after the scheme of the invention is adopted, the backup scheme of dual homing can be finished only by using one physical device, two receiving channels of the terminal device can simultaneously monitor the signal data of the main homing and the standby homing, and the links between the terminal device and different satellite main stations are automatically switched in a unified decision-making way;
2. the dual-homing terminal can be applied to a master station disaster recovery scene or a dual-master station rain attenuation resisting scene, the integrated terminal with low cost multiplexes unified ODU equipment, and unified monitoring and unified automatic switching of signals of the dual-homing master station are realized;
3. compared with the prior art that the fixed station is built in an electrical interconnection cable switching mode, the scheme of the invention can be completed through control software embedded in integrated equipment without involving electrical interconnection cable switching, and is not only suitable for the fixed station, but also suitable for a satellite portable communication station.
Drawings
The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure.
Fig. 1 is a flowchart of a dual-homing method for a remote satellite station according to a first embodiment of the present disclosure.
Fig. 2 is a structural diagram of a dual-homing apparatus for a remote satellite station according to a second embodiment of the present application.
Fig. 3 is a flowchart of a dual-homing method for a remote satellite station according to a third embodiment of the present application.
Fig. 4 is a structural diagram of a dual-homing apparatus for a remote satellite station according to a fourth embodiment of the present application.
Fig. 5 is a flow chart of an attribution decision according to an embodiment of the present application.
Fig. 6 is a schematic diagram of a dual-homing satellite remote station according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings, but the described embodiments of the present invention are a part of the embodiments of the present invention, not all of the embodiments of the present invention.
Example one
As shown in fig. 1, a method for dual homing of a remote satellite station in this embodiment includes the following steps:
and S1, presetting carrier parameters of the first master station and the second master station so that the terminal equipment of the remote station can normally lock the carriers of the first master station and the second master station.
The carrier parameters include frequency points, bandwidth, FEC, modulation mode, and the like.
S2, the terminal device of the remote station receives the forward carrier signals of the first master station and the second master station simultaneously.
S3, the terminal device of the remote station performs an attribution decision according to the signal quality of the received carrier signal, as shown in fig. 5, and performs an attribution handover according to the decision result.
It is assumed that currently it is the first master station that has established a link with the terminal device of the remote station. The second master station is a standby master station. Based on this assumption, it is determined whether the carrier signal of the first master station is lower than a preset reception threshold:
if the signal loss lock duration time is less than the preset receiving threshold, further judging whether the signal loss lock duration time of the first master station is greater than a preset loss lock time threshold; the unlocking time can be defined by a user, and the system defaults to 3 minutes;
if the time is greater than the preset unlocking time threshold, the main station which establishes the connection currently may be unavailable due to disaster or rain attenuation, and the home switch is required, so that the terminal device of the remote station is switched to establish a link with the second main station, and then the process returns to S3 for circular execution.
At this time, the link established with the terminal device of the remote station becomes a second master station, the first master station is a standby master station, and after returning to S3 for cycle execution, the carrier signal and the signal lock loss duration of the second master station are determined instead, and the cycle determination and switching are performed.
Specifically, when the attribution determination is performed, if the received signal is not lower than the preset receiving threshold and the signal lock losing duration is greater than the preset lock losing time threshold at the same time, the established link is kept for a while to be switched, and then the loop execution is performed by returning to S3.
In S3, the preset receiving threshold includes a preset demodulation threshold and a preset power threshold, and the specific value is set according to different carrier bandwidths and modulation modes;
in S3, determining whether the carrier signal is lower than a preset receiving threshold includes determining whether the received carrier signal is lower than a preset demodulation threshold and a preset power threshold at the same time:
if the signal loss lock duration time is less than the preset loss lock duration threshold, further judging whether the signal loss lock duration time is greater than the preset loss lock time threshold;
if not, no further determination is continued, and then the process returns to S3 to perform the loop.
In this example, the home handoff process and the final status may be indicated by deploying an explicit indicator light on the terminal device of the remote station.
Example two
A dual-homing apparatus for a remote satellite station in this embodiment, as shown in fig. 2, includes: the device comprises a parameter presetting module and a judging attribution module.
The parameter presetting module presets carrier parameters of the first main station and the second main station so that terminal equipment of the remote station can normally lock carriers of the first main station and the second main station. The carrier parameters include frequency points, bandwidth, FEC, modulation mode, and the like.
The attribution judging module carries out attribution judgment according to the signal quality of the carrier signals of the first main station and the second main station simultaneously received by the terminal equipment of the remote station:
judging whether a carrier signal of a master station which has currently established a link with terminal equipment of a remote station is lower than a preset receiving threshold, wherein the master station which has currently established the link with the terminal equipment of the remote station is one of a first master station and a second master station, and if the carrier signal of the first master station is currently established the link with the first master station, judging the carrier signal of the first master station;
if the signal loss lock duration time is less than the preset receiving threshold, further judging whether the signal loss lock duration time of the first master station is greater than a preset loss lock time threshold; if the number of the remote terminal devices is larger than the preset unlocking time threshold, performing attribution switching to disconnect the link between the terminal device of the remote terminal and the first master station, switching to establish the link with the second master station, and then circularly executing attribution judgment.
And when the judgment is carried out again, the judgment is carried out according to the carrier signal and the signal out-of-lock duration of the second master station which currently establishes the link. And performing the above steps circularly, and performing corresponding judgment with the master station currently establishing the link according to the switching condition.
Specifically, when the attribution judgment is performed by the attribution judgment module, if the condition that the received signal is lower than the preset receiving threshold and the signal lock losing duration is greater than the preset lock losing time threshold is not simultaneously met, the established link is kept to be switched temporarily, and after the switching is returned, the attribution judgment is executed in a circulating mode.
Specifically, the preset receiving threshold includes a preset demodulation threshold and a preset power threshold, and the specific value is set according to different carrier bandwidths and modulation modes. Judging whether the carrier signal is lower than a preset receiving threshold by the attribution judging module, wherein the judging comprises judging whether the received carrier signal is lower than a preset demodulation threshold and a preset power threshold at the same time:
if the signal loss lock duration time is less than the preset loss lock duration threshold, further judging whether the signal loss lock duration time is greater than the preset loss lock time threshold;
if not, no further judgment is continuously carried out, and after returning, the attribution judgment is circularly carried out.
In this example, the system further includes an indication module, disposed on the terminal device of the remote station, for indicating the state of the home handover procedure and the final state through an indicator light.
EXAMPLE III
The dual-homing method for the satellite remote station in the embodiment is applied to the remote station, and as shown in fig. 3, comprises the following steps:
s1, receiving forward carrier signals of the first master station and the second master station at the same time; the first master station and the second master station are two master stations normally locked by terminal equipment of the remote station, and normal locking is realized by presetting carrier parameters of the first master station and the second master station. The carrier parameters include frequency points, bandwidth, FEC, modulation mode, and the like.
And S2, making attribution judgment according to the signal quality of the received carrier signal.
And S3, performing attribution switching according to the judgment result.
Specifically, the decision at S2 and the switching process at S3 are shown in fig. 5, and determine whether a carrier signal of a master station that has currently established a link with the terminal device of the remote station is lower than a preset receiving threshold, where the master station that has currently established a link with the terminal device of the remote station is one of the first master station and the second master station, and if the current is that a link is established with the first master station, decide the carrier signal of the first master station;
if the signal loss lock duration time is less than the preset receiving threshold, whether the signal loss lock duration time of the first master station is greater than a preset loss lock time threshold is further judged;
if the time is greater than the preset unlocking time threshold, performing attribution switching, so that the terminal equipment of the remote station disconnects the link with the first master station, switches to establish the link with the second master station, and then returns to S2 for circular execution.
And after returning to the step S2, judging that the target master station is the second master station which currently establishes the link, judging according to the carrier signal and the signal lock losing duration of the second master station, and switching according to a judgment structure. And the process is circulated.
If the received signals are not simultaneously lower than the preset receiving threshold and the signal lock losing duration is greater than the preset lock losing time threshold, the established link is kept not to be switched for the moment, and after the link returns, the attribution judgment is executed in a circulating mode.
Specifically, the preset receiving threshold includes a preset demodulation threshold and a preset power threshold, and the specific value is set according to different carrier bandwidths and modulation modes. Judging whether the carrier signal is lower than a preset receiving threshold by the attribution judging module, wherein the judging comprises judging whether the received carrier signal is lower than a preset demodulation threshold and a preset power threshold at the same time:
if the signal loss lock duration time is less than the preset loss lock duration threshold, further judging whether the signal loss lock duration time is greater than the preset loss lock time threshold;
if not, no further determination is continued, and then the process returns to S2 to perform the loop.
In this example, the home handoff process and the final status may be indicated by deploying an explicit indicator light on the terminal device of the remote station.
Example four
The present embodiment provides a dual-homing apparatus for a remote satellite station, which is integrated with the remote satellite station, as shown in fig. 4, and includes: the device comprises a receiving module and a switching module.
The receiving module receives forward carrier signals of the first master station and the second master station simultaneously; the first master station and the second master station are two master stations normally locked by terminal equipment of the remote station, and normal locking is realized by presetting carrier parameters of the first master station and the second master station. The carrier parameters include frequency points, bandwidth, FEC, modulation mode, and the like.
The switching module performs an affiliation decision according to the signal quality of the received carrier signal, and adopts the flow shown in fig. 5:
judging whether a carrier signal of a master station which has currently established a link with terminal equipment of a remote station is lower than a preset receiving threshold or not, wherein the master station which has currently established the link with the terminal equipment of the remote station is one of a first master station and a second master station;
if the signal loss-of-lock duration time is less than the preset loss-of-lock time threshold, further judging whether the signal loss-of-lock duration time of a master station which has currently established a link with the terminal equipment of the remote station is greater than the preset loss-of-lock time threshold;
if the time is greater than the preset lock losing time threshold, performing attribution switching, switching the terminal equipment of the remote station to establish a link with the other master station of the first master station and the second master station, and then circularly executing attribution judgment.
And if the judgment result meets the switching condition, switching to the second master station to establish the link with the remote station. And then, when the cyclic judgment is carried out, judging by using the carrier signal of the second main station which currently establishes the link and the signal lock losing duration, and switching according to a judgment result. The decision and the switching are cycled in this way.
If the received signals are not simultaneously lower than the preset receiving threshold and the signal lock losing duration is greater than the preset lock losing time threshold, the established link is kept not to be switched for the moment, and after the link returns, the attribution judgment is executed in a circulating mode.
Specifically, the preset receiving threshold includes a preset demodulation threshold and a preset power threshold, and the specific value is set according to different carrier bandwidths and modulation modes. Judging whether the carrier signal is lower than a preset receiving threshold by the attribution judging module, wherein the judging comprises judging whether the received carrier signal is lower than a preset demodulation threshold and a preset power threshold at the same time:
if the signal loss lock duration time is less than the preset loss lock duration threshold, further judging whether the signal loss lock duration time is greater than the preset loss lock time threshold;
if not, no further judgment is continuously carried out, and then returning is carried out to circularly carry out attribution judgment.
In this example, the system further includes an indication module, disposed on the terminal device of the remote station, for indicating the state of the home handover procedure and the final state through an indicator light.
EXAMPLE five
The present example provides a dual-homing satellite remote station. As shown in fig. 6, the terminal device of the remote station normally locks the first master station and the second master station, and the normal locking is implemented by presetting carrier parameters of the first master station and the second master station. The carrier parameters include frequency points, bandwidth, FEC, modulation mode, and the like.
The remote station receives forward carrier signals of the first master station and the second master station simultaneously.
Assume now that the remote station of this example has established a link with the first master station.
The remote station makes an attribution decision according to the signal quality of the received carrier signal, and adopts the flow shown in fig. 5:
judging whether a carrier signal of a first master station which establishes a link with terminal equipment of a remote station at present is lower than a preset receiving threshold or not;
if the signal loss-of-lock duration time is less than the preset loss-of-lock time threshold, further judging whether the signal loss-of-lock duration time of a first master station which has currently established a link with the terminal equipment of the remote station is greater than the preset loss-of-lock time threshold;
if the time is greater than the preset unlocking time threshold, performing attribution switching to enable terminal equipment of the remote station to be switched to establish a link with the second master station, and then circularly executing attribution judgment;
and judging the carrier signal and the signal lock-losing duration of a second master station which has established a link with the terminal equipment of the remote station at present, and switching or not switching according to the judgment result. And the process is circulated.
The embodiment mainly provides highly integrated end station equipment, which supports double-master-station broadcast channel reception, wherein terminal equipment belongs to two different master stations, double-channel reception at an end station side forms a master-slave relationship, the end station equipment automatically detects forward channel serviceability of the master station, certain master station automatically switches master station affiliation according to preset conditions after unavailable service is caused by disasters or rain attenuation, and user service data are automatically switched to a reachable master station link. The link protection solution only needs one set of equipment at the end station, and does not need the active participation of the master station, thereby greatly reducing the deployment cost.
EXAMPLE six
This example provides an electronic device, including: at least one processor and memory; wherein the memory stores computer execution instructions; the computer-executable instructions stored in the memory are executed by the at least one processor to cause the at least one processor to perform the method for dual-homing of a remote satellite station of the first or third embodiment.
EXAMPLE seven
The present example provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the apparatus in the storage medium is controlled to execute the method for dual-homing of a remote satellite station according to the first embodiment or the third embodiment.
The above is only a preferred embodiment of the present invention and is not intended to limit the present invention, and it is apparent that those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A dual-homing method for switching a remote satellite station is characterized by comprising the following steps:
s1, presetting carrier parameters of the first master station and the second master station so that the terminal equipment of the remote station can normally lock the carriers of the first master station and the second master station;
s2, the terminal equipment of the remote station receives the forward carrier signals of the first master station and the second master station at the same time;
s3, the terminal equipment of the remote station judges the attribution according to the signal quality of the received carrier signal, and switches the attribution according to the judgment result:
judging whether a carrier signal of a master station which has currently established a link with terminal equipment of a remote station is lower than a preset receiving threshold or not, wherein the master station which has currently established the link with the terminal equipment of the remote station is one of a first master station and a second master station;
if the signal loss-of-lock duration time is less than a preset loss-of-lock time threshold, further judging whether the signal loss-of-lock duration time of a master station which currently establishes a link with the terminal equipment of the remote station is greater than the preset loss-of-lock time threshold;
and if the current time is greater than the preset lock losing time threshold, performing attribution switching, switching the terminal equipment of the remote station to establish a link with the other one of the first master station and the second master station, and then returning to S3 for circular execution.
2. The method of claim 1 wherein in step S3, when performing the homing decision, if the received signal is not lower than the predetermined receiving threshold and the duration of the signal loss lock is greater than the predetermined loss lock time threshold, the established link is kept temporarily not to be handed over, and then the procedure returns to step S3 to be executed in a loop.
3. The dual-homing method for switching the satellite remote station according to claim 1, wherein the carrier parameters include frequency point, bandwidth, FEC and modulation mode.
4. The dual-homing method of claim 1, wherein the predetermined reception threshold comprises a predetermined demodulation threshold and a predetermined power threshold, and the specific values are set according to different carrier bandwidths and modulation modes;
in S3, determining whether the carrier signal is lower than a preset receiving threshold includes determining whether the received carrier signal is lower than a preset demodulation threshold and a preset power threshold at the same time:
if the signal loss lock duration time is less than the preset loss lock duration threshold, further judging whether the signal loss lock duration time is greater than the preset loss lock time threshold;
if not, no further determination is continued, and then the process returns to S3 to perform the loop.
5. A dual-homing apparatus for a remote satellite station, comprising:
the parameter presetting module is used for presetting carrier parameters of the first master station and the second master station so that the terminal equipment of the remote station can normally lock carriers of the first master station and the second master station;
and the attribution judging module is used for judging attribution according to the signal quality of the carrier signals of the first main station and the second main station simultaneously received by the terminal equipment of the remote station: judging whether a carrier signal of a master station which has currently established a link with terminal equipment of a remote station is lower than a preset receiving threshold or not, wherein the master station which has currently established the link with the terminal equipment of the remote station is one of a first master station and a second master station; if the signal loss-of-lock duration time is less than a preset loss-of-lock time threshold, further judging whether the signal loss-of-lock duration time of a master station which currently establishes a link with the terminal equipment of the remote station is greater than the preset loss-of-lock time threshold; if the time is greater than the preset lock losing time threshold, performing attribution switching, switching the terminal equipment of the remote station to establish a link with the other master station of the first master station and the second master station, and then circularly executing attribution judgment.
6. A dual-homing switching method for a remote satellite station is applied to the remote station and comprises the following steps:
s1, receiving forward carrier signals of the first master station and the second master station at the same time; the first master station and the second master station are two master stations normally locked by terminal equipment of the remote station, and the normal locking is realized by presetting carrier parameters of the first master station and the second master station;
s2, performing attribution judgment according to the signal quality of the received carrier signal, and judging whether the carrier signal of a main station which currently establishes a link with the terminal equipment of the remote station is lower than a preset receiving threshold, wherein the main station which currently establishes the link with the terminal equipment of the remote station is one of the first main station and the second main station;
if the signal loss-of-lock duration time is less than a preset loss-of-lock time threshold, further judging whether the signal loss-of-lock duration time of a master station which currently establishes a link with the terminal equipment of the remote station is greater than the preset loss-of-lock time threshold;
and if the current time is greater than the preset lock losing time threshold, performing home switch, switching the terminal equipment of the remote station to establish a link with the other one of the first master station and the second master station, and then returning to S2 for circular execution.
7. A dual-homing apparatus for a remote satellite station, integrated with the remote satellite station, comprising:
the receiving module is used for simultaneously receiving forward carrier signals of the first master station and the second master station; the first master station and the second master station are two master stations normally locked by terminal equipment of the remote station, and the normal locking is realized by presetting carrier parameters of the first master station and the second master station;
a switching module, configured to perform attribution determination according to the signal quality of the received carrier signal: judging whether a carrier signal of a master station which has currently established a link with terminal equipment of a remote station is lower than a preset receiving threshold or not, wherein the master station which has currently established the link with the terminal equipment of the remote station is one of the first master station and the second master station; if the signal loss-of-lock duration time is less than a preset loss-of-lock time threshold, further judging whether the signal loss-of-lock duration time of a master station which currently establishes a link with the terminal equipment of the remote station is greater than the preset loss-of-lock time threshold; and if the number of the remote terminal devices is larger than the preset lock losing time threshold, performing attribution switching to enable the terminal device of the remote terminal station to be switched to establish a link with the other one of the first master station and the second master station, and then circularly executing attribution judgment.
8. A dual-homing satellite remote station is characterized in that terminal equipment of the remote station normally locks a first master station and a second master station, and the normal locking is realized by presetting carrier parameters of the first master station and the second master station;
the remote station is used for receiving forward carrier signals of the first master station and the second master station simultaneously;
the remote station is further configured to make a homing decision based on the signal quality of the received carrier signal: judging whether a carrier signal of a master station which has currently established a link with the terminal equipment of the remote station is lower than a preset receiving threshold or not, wherein the master station which has currently established the link with the terminal equipment of the remote station is one of the first master station and the second master station; if the signal loss lock duration time is less than a preset loss lock time threshold, further judging whether the signal loss lock duration time of a main station which currently establishes a link with the terminal equipment of the remote station is greater than the preset loss lock time threshold; and if the number of the remote terminal devices is larger than the preset lock losing time threshold, performing attribution switching to enable the terminal device of the remote terminal station to be switched to establish a link with the other one of the first master station and the second master station, and then circularly executing attribution judgment.
9. An electronic device, comprising: at least one processor and memory; wherein the memory stores computer-executable instructions; wherein the computer executable instructions stored by the memory, when executed by the at least one processor, cause the at least one processor to perform the method of dual homing of a remote satellite station according to any one of claims 1, 2, 3, 4, 6.
10. A computer-readable storage medium having stored thereon a computer program which, when executed by a processor, controls an apparatus in which the storage medium resides to perform the method of dual home handoff of a remote station of a satellite according to any one of claims 1, 2, 3, 4 and 6.
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