CN112714479B - 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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- CN112714479B CN112714479B CN202110093409.2A CN202110093409A CN112714479B CN 112714479 B CN112714479 B CN 112714479B CN 202110093409 A CN202110093409 A CN 202110093409A CN 112714479 B CN112714479 B CN 112714479B
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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]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/06—Airborne or Satellite Networks
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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
The method comprises the steps of presetting carrier parameters of a first master station and a second master station, so that the remote station normally locks carriers of the first master station and the second master station; the remote station receives the forward carrier signals of the first master station and the second master station at the same time, carries out attribution judgment according to the signal quality of the carrier signals, and carries out attribution switching according to the judgment result. Meanwhile, the terminal equipment of the remote station belongs to two different master stations under the jurisdiction, the two-channel receiving at the side of the terminal station forms a master-slave relation, the terminal station equipment automatically detects the forward channel serviceability of the master station, the terminal station equipment automatically switches the attribution of the master station according to preset conditions after unavailable service caused by disasters or rain attenuation, the user service data is automatically switched to a reachable master station link, the terminal station only needs one set of equipment, the master station does not need to actively participate, and the deployment cost is greatly reduced.
Description
Technical Field
The invention relates to 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, and mixture of star and net.
In the star networking, each end station receives the forward TDM communication channel of the master station and establishes communication connection with the master station. In the prior device implementation, the end station device only supports the forward channel of one master station to receive, so that one end station device can only access the management network under one master station, and when the master station device fails, all the end stations can not normally provide service.
Problem scenario 1: satellite communication is widely applied to emergency communication due to wide coverage under low cost, disaster backup scenes are a main target market, but a multi-device stacking mode is mainly used in an end station reliability protection scheme under the current main station fault scene.
Problem scenario 2: the frequency spectrum of satellite communication is gradually increased, and when the master station side has rain attenuation, interruption of terminal service in the whole network is caused.
The reliability protection solutions in both scenarios are costly.
Disclosure of Invention
The invention mainly aims at the defects and the shortcomings of the related prior art, and provides a satellite remote station dual-homing switching method and device and a dual-homing satellite remote station, and simultaneously supports dual-master station broadcast channel reception, terminal equipment of the remote station is homed under the jurisdiction of two different master stations, the dual-channel reception at the side of the terminal station forms a master-slave relation, the terminal equipment automatically detects the forward channel serviceability of the master station, the terminal equipment automatically performs master station homeswitching according to preset conditions after unavailable service caused by disasters or rain attenuation of a certain master station, user service data is automatically switched to a reachable master station link, the terminal station only needs one set of equipment, and the master station does not need to actively participate, so that the deployment cost is greatly reduced.
In order to achieve the above object, the present invention adopts the following technique:
a satellite remote station dual homing switching method includes the steps:
s1, presetting carrier parameters of a first master station and a second master station so that terminal equipment of a remote station can normally lock carriers of the first master station and the second master station;
s2, terminal equipment of a remote station receives forward carrier signals of a first master station and a second master station simultaneously;
s3, the terminal equipment of the remote station carries out attribution judgment according to the signal quality of the received carrier signal, and carries out attribution switching according to the judgment result:
judging whether a carrier signal of a master station which is currently establishing a link with terminal equipment of a remote station is lower than a preset receiving threshold, wherein the master station which is currently establishing the link with the terminal equipment of the remote station is one master station of a first master station and a second master station;
if the signal lock-out duration of the master station which is in the process of establishing a link with the terminal equipment of the remote station is smaller than the preset receiving threshold, further judging whether the signal lock-out duration of the master station which is in the process of establishing the link with the terminal equipment of the remote station is larger than the preset lock-out time threshold;
if the time threshold is larger than the preset unlocking time threshold, home switching is carried out, so that terminal equipment of the remote station is switched to establish a link with the other master station in the first master station and the second master station, and then S3 is returned to carry out cyclic execution.
Further, in S3, when the home judgment is performed, if the received signal is not simultaneously satisfied that the received signal is lower than the preset receiving threshold and the duration of signal out-of-lock is greater than the preset out-of-lock time threshold, the established link is kept from being switched temporarily, and then the loop execution is performed in S3.
Further, the carrier parameters include frequency point, bandwidth, FEC and modulation mode.
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;
s3, judging whether the carrier signal is lower than a preset receiving threshold or not comprises judging whether the received carrier signal is simultaneously lower than a preset demodulation threshold and a preset power threshold or not:
if the signal loss duration is lower than the preset loss-of-lock time threshold, further judging whether the signal loss-of-lock duration is greater than the preset loss-of-lock time threshold;
if not, not continuing to execute further judgment, and returning to S3 for cyclic execution.
A satellite remote station dual homing switching device comprising:
the parameter presetting module is used for presetting carrier parameters of the first master station and the second master station so that terminal equipment of the remote station can normally lock carriers of the first master station and the second master station;
the judging attribution module is used for carrying out attribution judgment according to the signal quality of the carrier signals of the first master station and the second master station which are simultaneously received by the terminal equipment of the remote station: judging whether a carrier signal of a master station which is currently establishing a link with terminal equipment of a remote station is lower than a preset receiving threshold, wherein the master station which is currently establishing the link with the terminal equipment of the remote station is one master station of a first master station and a second master station; if the signal lock-out duration of the master station which is in the process of establishing a link with the terminal equipment of the remote station is smaller than the preset receiving threshold, further judging whether the signal lock-out duration of the master station which is in the process of establishing the link with the terminal equipment of the remote station is larger than the preset lock-out time threshold; if the time threshold is larger than the preset unlocking time threshold, home switching is carried out, so that terminal equipment of the remote station is switched to establish a link with the other master station in the first master station and the second master station, and home judgment is circularly carried out.
A satellite remote station dual homing switching method is applied to a remote station and comprises the following steps:
s1, simultaneously receiving forward carrier signals of a first master station and a second master station; the first master station and the second master station are two master stations which are normally locked by terminal equipment of a remote station, and the normal locking is realized by presetting carrier parameters of the first master station and the second master station;
s2, carrying out attribution judgment according to the signal quality of the received carrier signal, judging whether the carrier signal of a master station which has established a link with the terminal equipment of the remote station currently is lower than a preset receiving threshold, wherein the master station which has established a link with the terminal equipment of the remote station currently is one master station of a first master station and a second master station;
if the signal lock-out duration of the master station which is in the process of establishing a link with the terminal equipment of the remote station is smaller than the preset receiving threshold, further judging whether the signal lock-out duration of the master station which is in the process of establishing the link with the terminal equipment of the remote station is larger than the preset lock-out time threshold;
if the time threshold is larger than the preset unlocking time threshold, home switching is carried out, so that terminal equipment of the remote station is switched to establish a link with the other master station in the first master station and the second master station, and then S2 is returned to carry out cyclic execution.
A dual-homing switching device for a satellite remote station, integrated in the satellite remote 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 which are normally locked by terminal equipment of a remote station, and the normal locking is realized by presetting carrier parameters of the first master station and the second master station;
the switching module is used for carrying out attribution judgment according to the signal quality of the received carrier signal: judging whether a carrier signal of a master station which is currently establishing a link with terminal equipment of a remote station is lower than a preset receiving threshold, wherein the master station which is currently establishing the link with the terminal equipment of the remote station is one master station of a first master station and a second master station; if the signal lock-out duration of the master station which is in the process of establishing a link with the terminal equipment of the remote station is smaller than the preset receiving threshold, further judging whether the signal lock-out duration of the master station which is in the process of establishing the link with the terminal equipment of the remote station is larger than the preset lock-out time threshold; if the time threshold is larger than the preset unlocking time threshold, home switching is carried out, so that terminal equipment of the remote station is switched to establish a link with the other master station in the first master station and the second master station, and home judgment is circularly carried out.
The terminal equipment of the remote station normally locks the first master station and the 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 simultaneously receiving forward carrier signals of the first master station and the second master station;
the remote station is further configured to perform a home decision based on the signal quality of the received carrier signal: judging whether a carrier signal of a master station which is currently establishing a link with terminal equipment of a remote station is lower than a preset receiving threshold, wherein the master station which is currently establishing the link with the terminal equipment of the remote station is one master station of a first master station and a second master station; if the signal lock-out duration of the master station which is in the process of establishing a link with the terminal equipment of the remote station is smaller than the preset receiving threshold, further judging whether the signal lock-out duration of the master station which is in the process of establishing the link with the terminal equipment of the remote station is larger than the preset lock-out time threshold; if the time threshold is larger than the preset unlocking time threshold, home switching is carried out, so that terminal equipment of the remote station is switched to establish a link with the other master station in the first master station and the second master station, and home judgment is circularly carried out.
An electronic device, comprising: at least one processor and memory; wherein the memory stores computer-executable instructions; the at least one processor, when executing the computer-executable instructions stored in the memory, causes the at least one processor to perform a satellite remote station dual homing handoff method.
A computer readable storage medium having stored thereon a computer program which when executed by a processor controls a device in which the storage medium resides to perform a satellite remote station dual homing handoff method.
The invention has the beneficial effects that:
1. in the prior art, two independent modems are used for receiving the double main stations, and the backward carrier wave also occupies signaling channels of the two main stations at the same time; after the scheme of the invention is adopted, a dual-homing backup scheme can be completed by using only one physical device, and two receiving channels of the terminal device can monitor signal data of the main homing and the standby homing simultaneously, so that unified decision is made to automatically switch links between the terminal device and different satellite main stations;
2. the dual-homing terminal can be applied to a disaster recovery scene of a master station or a rain-failure-resistant scene of a dual-master station, and the integrated terminal with low cost multiplexes unified ODU equipment to realize unified monitoring and unified automatic switching of signals of the dual-homing master station;
3. compared with the prior art that the fixed station is built by adopting the mode of switching the electrical interconnection cable, the scheme of the invention can be completed by the control software embedded in the integrated equipment without the electrical interconnection cable, and is not only suitable for the fixed station, but also suitable for the satellite portable communication station.
Drawings
The drawings described herein are for illustration of selected embodiments only and not all possible implementations, and are not intended to limit the scope of the invention.
Fig. 1 is a flowchart of a dual homing handover method for a satellite remote station according to an embodiment of the present application.
Fig. 2 is a block diagram of a dual-homing switching device for a satellite remote station according to a second embodiment of the present application.
Fig. 3 is a flowchart of a dual homing handover method for a satellite remote station according to a third embodiment of the present application.
Fig. 4 is a block diagram of a dual homing switching device for a satellite remote station according to a fourth embodiment of the present application.
Fig. 5 is a home decision flow chart of 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
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings, but the described embodiments of the present invention are some, but not all embodiments of the present invention.
Example 1
A satellite remote station dual homing switching method of this example, as shown in figure 1, includes the following steps:
s1, presetting carrier parameters of a first master station and a second master station so that terminal equipment of a remote station can normally lock carriers of the first master station and the second master station.
The carrier parameters include frequency points, bandwidth, FEC, modulation modes and the like.
S2, terminal equipment of the remote station receives forward carrier signals of the first master station and the second master station simultaneously.
S3, the terminal equipment of the remote station carries out attribution judgment according to the signal quality of the received carrier signal, as shown in figure 5, and carries out attribution switching according to the judgment result.
It is assumed that the first master station has currently established a link with the terminal device of the remote station. The second master station is a standby master station. Based on the assumption, judging whether the carrier signal of the first master station is lower than a preset receiving threshold:
if the signal lock-out duration of the first master station is smaller than the preset receiving threshold, judging whether the signal lock-out duration of the first master station is larger than the preset lock-out time threshold or not; the unlocking time can be customized by a user, and the system defaults for 3 minutes;
if the current service is greater than the preset unlocking time threshold, the master station with the current connection establishment on the surface may not be available due to disasters or rain attenuation, home switching is needed, so that the terminal equipment of the remote station is switched to establish a link with the second master station, and then the S3 is returned to perform cyclic execution.
At this time, the terminal equipment of the remote station has established a link to become a second master station, the first master station is a standby master station, and after returning to S3 for cyclic execution, the carrier signal and the signal loss duration of the second master station are judged instead, and thus the cyclic judgment and switching are performed.
Specifically, when the attribution judgment is performed, if the received signal is not simultaneously lower than a preset receiving threshold and the signal out-of-lock duration is longer than a preset out-of-lock time threshold, the established link is kept to be temporarily not switched, and then the S3 is returned to perform cyclic execution.
In S3, the preset receiving threshold comprises a preset demodulation threshold and a preset power threshold, and specific values are set according to different carrier bandwidths and modulation modes;
s3, judging whether the carrier signal is lower than a preset receiving threshold or not comprises judging whether the received carrier signal is simultaneously lower than a preset demodulation threshold and a preset power threshold or not:
if the signal loss duration is lower than the preset loss-of-lock time threshold, further judging whether the signal loss-of-lock duration is greater than the preset loss-of-lock time threshold;
if not, not continuing to execute further judgment, and returning to S3 for cyclic execution.
In this example, the home handover procedure and the final state may be indicated by an explicit indicator light deployed on the terminal device of the remote station.
Example two
A satellite remote station dual homing switching device of the present example, as shown in fig. 2, comprises: and the parameter presetting module and the judgment attribution module.
The parameter presetting module presets carrier parameters of the first master station and the second master station so that terminal equipment of the remote station can normally lock carriers of the first master station and the second master station. The carrier parameters include frequency points, bandwidth, FEC, modulation modes and the like.
The judgment attribution module carries out attribution judgment according to the signal quality of the carrier signals of the first master station and the second master station which are simultaneously received by the terminal equipment of the remote station:
judging whether a carrier signal of a master station which is currently establishing a link with terminal equipment of a remote station is lower than a preset receiving threshold, wherein the master station which is currently establishing the link with the terminal equipment of the remote station is one of a first master station and a second master station, for example, if the current link is established with the first master station, the carrier signal of the first master station is judged;
if the signal lock-out duration of the first master station is smaller than the preset receiving threshold, judging whether the signal lock-out duration of the first master station is larger than the preset lock-out time threshold or not; if the time threshold is larger than the preset unlocking time threshold, the attribution switching is carried out, so that the terminal equipment of the remote station and the first main station are disconnected, the link is switched to be established with the second main station, and attribution judgment is carried out circularly.
And when the judgment is carried out again, judging the carrier signal and the signal unlocking duration time of the second main station which establishes the link currently. And performing the circulation, and performing corresponding judgment with the master station currently establishing the link according to the switching condition.
Specifically, when the judgment attribution module performs attribution judgment, if the received signal is not simultaneously lower than a preset receiving threshold and the signal out-of-lock duration is longer than a preset out-of-lock time threshold, the established link is kept from being switched temporarily, and after the return, attribution judgment is circularly executed.
Specifically, 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. The judging attribution module judges whether the carrier signal is lower than a preset receiving threshold or not, and comprises judging whether the received carrier signal is simultaneously lower than a preset demodulation threshold and a preset power threshold or not:
if the signal loss duration is lower than the preset loss-of-lock time threshold, further judging whether the signal loss-of-lock duration is greater than the preset loss-of-lock time threshold;
if the number of the attributions is not lower than the number of the attributions, further judgment is not continuously executed, and after the number of the attributions is returned, the attribution judgment is circularly executed.
In this example, the terminal device further includes an indication module, disposed on the terminal device of the remote station, for performing status indication on the home handover procedure and the final status through an indicator light.
Example III
The dual homing switching method of the satellite remote station of the present example is applied to a remote station, as shown in fig. 3, and includes the following steps:
s1, simultaneously receiving forward carrier signals of a first master station and a second master station; the first master station and the second master station are two master stations which are normally locked by terminal equipment of a remote station, and the 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 modes and the like.
S2, performing attribution judgment according to the signal quality of the received carrier signal.
S3, performing attribution switching according to the judgment result.
Specifically, as shown in fig. 5, the decision of S2 and the switching flow of S3 determine whether the 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, and if the carrier signal of a 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, the carrier signal of the first master station is decided;
if the signal lock-out duration of the first master station is smaller than the preset receiving threshold, the signal lock-out duration of the first master station is larger than the preset lock-out time threshold;
if the time threshold is larger than the preset unlocking time threshold, home switching is carried out, so that the terminal equipment of the remote station and the first master station are disconnected, the link is switched to be established with the second master station, and then S2 is returned to carry out cyclic execution.
And returning to the step S2, judging that the specific master station is the second master station which is currently establishing the link, judging by using the carrier signal and the signal unlocking duration of the second master station, and switching according to a judging structure. And so on.
If the received signals are not simultaneously satisfied and are lower than a preset receiving threshold and the signal out-of-lock duration is longer than a preset out-of-lock time threshold, the established link is kept from being switched temporarily, and after the link returns, the home judgment is circularly executed.
Specifically, 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. The judging attribution module judges whether the carrier signal is lower than a preset receiving threshold or not, and comprises judging whether the received carrier signal is simultaneously lower than a preset demodulation threshold and a preset power threshold or not:
if the signal loss duration is lower than the preset loss-of-lock time threshold, further judging whether the signal loss-of-lock duration is greater than the preset loss-of-lock time threshold;
if not, not continuing to execute further judgment, and returning to S2 for cyclic execution.
In this example, the home handover procedure and the final state may be indicated by an explicit indicator light deployed on the terminal device of the remote station.
Example IV
The present example provides a dual homing switching device for a remote satellite station, integrated in the remote satellite station, as shown in fig. 4, comprising: 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 which are normally locked by terminal equipment of a remote station, and the 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 modes and the like.
The switching module performs the attribution judgment 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 is currently establishing a link with terminal equipment of a remote station is lower than a preset receiving threshold, wherein the master station which is currently establishing the link with the terminal equipment of the remote station is one master station of a first master station and a second master station;
if the signal lock-out duration of the master station which is in the process of establishing a link with the terminal equipment of the remote station is smaller than the preset receiving threshold, further judging whether the signal lock-out duration of the master station which is in the process of establishing the link with the terminal equipment of the remote station is larger than the preset lock-out time threshold;
if the time threshold is larger than the preset unlocking time threshold, home switching is carried out, so that terminal equipment of the remote station is switched to establish a link with the other master station in the first master station and the second master station, and home judgment is circularly carried out.
And if the judging result meets the switching condition, switching to the second master station to establish a link with the remote station. And when the loop judgment is carried out, judging the carrier signal and the signal unlocking duration of the second main station which currently establishes the link, and switching according to the judgment result. The decision and switching are cycled in this way.
If the received signals are not simultaneously satisfied and are lower than a preset receiving threshold and the signal out-of-lock duration is longer than a preset out-of-lock time threshold, the established link is kept from being switched temporarily, and after the link returns, the home judgment is circularly executed.
Specifically, 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. The judging attribution module judges whether the carrier signal is lower than a preset receiving threshold or not, and comprises judging whether the received carrier signal is simultaneously lower than a preset demodulation threshold and a preset power threshold or not:
if the signal loss duration is lower than the preset loss-of-lock time threshold, further judging whether the signal loss-of-lock duration is greater than the preset loss-of-lock time threshold;
if the number of the data points is not lower than the number of the data points at the same time, further judgment is not continuously carried out, and then the data points return to circularly carry out the attribution judgment.
In this example, the terminal device further includes an indication module, disposed on the terminal device of the remote station, for performing status indication on the home handover procedure and the final status 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 realized by presetting carrier parameters of the first master station and the second master station. The carrier parameters include frequency points, bandwidth, FEC, modulation modes and the like.
The remote station receives the forward carrier signals of both the first and second primary stations.
It is assumed that the remote station of the present example has now established a link with the first master station.
The remote station performs home decision according to the signal quality of the received carrier signal, and adopts the flow shown in fig. 5:
judging whether the carrier signal of a first main station which is currently establishing a link with terminal equipment of a remote station is lower than a preset receiving threshold or not;
if the signal lock-out duration of the first master station which is in the process of establishing a link with the terminal equipment of the remote station is smaller than a preset receiving threshold, further judging whether the signal lock-out duration of the first master station which is in the process of establishing a link with the terminal equipment of the remote station is larger than a preset lock-out time threshold;
if the data is larger 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 main station, and then circularly executing attribution judgment;
and judging the carrier signal and the signal unlocking duration of the second main station which has established a link with the terminal equipment of the remote station currently, and switching or not switching according to the judgment result. And so on.
The embodiment mainly provides a highly integrated terminal station device, which supports the reception of a broadcast channel of a double master station, the terminal device belongs to the double channel of the terminal station side under the jurisdiction of two different master stations, the terminal station device automatically detects the forward channel serviceability of the master station, the terminal station device automatically performs the master station attribution switching according to preset conditions after the service unavailability of the terminal station device caused by disasters or rain attenuation, and the user service data is automatically switched to a reachable master station link. The end station of the link protection solution only needs one set of equipment, and does not need the active participation of the main station, so that the deployment cost is greatly reduced.
Example six
The present example provides an electronic device, comprising: at least one processor and memory; wherein the memory stores computer-executable instructions; executing computer-executable instructions stored in a memory on at least one processor causes the at least one processor to perform the satellite remote station dual homing handoff method of either embodiment one or embodiment three.
Example seven
The present example provides a computer readable storage medium having a computer program stored thereon, which when executed by a processor controls an apparatus in which the storage medium is located to perform the satellite remote station dual homing handover method of embodiment one or embodiment three.
The above is only a preferred embodiment of the present invention and is not intended to limit the present invention, and it is obvious that those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (7)
1. A method for dual homing handoff of a satellite remote station, comprising the steps of:
s1, presetting carrier parameters of a first master station and a second master station, so that terminal equipment of a remote station can normally lock carriers of the first master station and the second master station, wherein the carrier parameters comprise frequency points, bandwidths, FEC (forward error correction) and modulation modes;
s2, terminal equipment of a remote station receives forward carrier signals of a first master station and a second master station simultaneously;
s3, the terminal equipment of the remote station carries out attribution judgment according to the signal quality of the received carrier signal, and carries out attribution switching according to the judgment result:
judging whether a carrier signal of a main station which is currently establishing a link with terminal equipment of a remote station is lower than a preset receiving threshold, wherein the main station which is currently establishing the link with the terminal equipment of the remote station is one main station in a first main station and a second main station, the preset receiving threshold comprises a preset demodulation threshold and a preset power threshold, and specific values are set according to different carrier bandwidths and modulation modes;
if the received carrier signal is lower than the preset demodulation threshold and the preset power threshold at the same time, further judging whether the signal out-of-lock duration of a master station which has established a link with the terminal equipment of the remote station currently is greater than the preset out-of-lock time threshold:
if the time threshold is larger 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 other master station in the first master station and the second master station, returning to S3 for cyclic execution, otherwise, keeping the established link temporarily unchanged, and returning to S3 for cyclic execution;
and if the received carrier signal is not lower than the preset demodulation threshold and the preset power threshold at the same time, returning to the step S3 for cyclic execution.
2. A satellite remote station dual homing switching device, comprising:
the parameter presetting module is used for presetting carrier parameters of the first master station and the second master station so that terminal equipment of the remote station can normally lock carriers of the first master station and the second master station, wherein the carrier parameters comprise frequency points, bandwidths, FEC (forward error correction) and modulation modes;
the judging attribution module is used for carrying out attribution judgment according to the signal quality of the carrier signals of the first master station and the second master station which are simultaneously received by the terminal equipment of the remote station: judging whether a carrier signal of a main station which is currently establishing a link with terminal equipment of a remote station is lower than a preset receiving threshold, wherein the main station which is currently establishing the link with the terminal equipment of the remote station is one main station in a first main station and a second main station, the preset receiving threshold comprises a preset demodulation threshold and a preset power threshold, and specific values are set according to different carrier bandwidths and modulation modes; if the received carrier signal is lower than the preset demodulation threshold and the preset power threshold at the same time, further judging whether the signal out-of-lock duration of a master station which has established a link with the terminal equipment of the remote station currently is greater than the preset out-of-lock time threshold: if the preset unlocking time threshold is larger 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 other one of the first master station and the second master station, performing attribution judgment circularly, otherwise, keeping the established link temporarily not to be switched, and performing attribution judgment circularly; if the received carrier signal is not lower than the preset demodulation threshold and the preset power threshold at the same time, the attribution judgment is circularly executed.
3. A satellite remote station dual homing handoff method, applied to a remote station, comprising the steps of:
s1, simultaneously receiving forward carrier signals of a first master station and a 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, the normal locking is realized by presetting carrier parameters of the first master station and the second master station, and the carrier parameters comprise frequency points, bandwidths, FEC and modulation modes;
s2, carrying out attribution judgment according to the signal quality of the received carrier signal, judging whether the carrier signal of a main station which is currently establishing a link with the terminal equipment of the remote station is lower than a preset receiving threshold, wherein the preset receiving threshold comprises a preset demodulation threshold and a preset power threshold, the specific value is set according to different carrier bandwidths and modulation modes, and the main station which is currently establishing the link with the terminal equipment of the remote station is one main station of the first main station and the second main station;
if the signal loss duration of the master station which is currently established with the terminal equipment of the remote station is lower than the preset demodulation threshold and the preset power threshold, further judging whether the signal loss duration of the master station which is currently established with the terminal equipment of the remote station is greater than the preset loss time threshold:
if the time threshold is larger than the preset unlocking time threshold, performing attribution switching to enable terminal equipment of a remote station to be switched to establish a link with the other master station in the first master station and the second master station, returning to S2 for circular execution, otherwise, keeping the established link temporarily not to be switched, and returning to S2 for circular execution;
and if the power is not lower than the preset demodulation threshold and the preset power threshold at the same time, returning to the step S2 for cyclic execution.
4. A dual homing switching device for a satellite remote station, integrated with the satellite remote 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, the normal locking is realized by presetting carrier parameters of the first master station and the second master station, and the carrier parameters comprise frequency points, bandwidths, FEC and modulation modes;
the switching module is used for carrying out attribution judgment according to the signal quality of the received carrier signal: judging whether a carrier signal of a main station which is currently established with terminal equipment of a remote station is lower than a preset receiving threshold or not, wherein the preset receiving threshold comprises a preset demodulation threshold and a preset power threshold, specific values are set according to different carrier bandwidths and modulation modes, and the main station which is currently established with the terminal equipment of the remote station is one main station of the first main station and the second main station; if the signal loss duration of the master station which is currently established with the terminal equipment of the remote station is lower than the preset demodulation threshold and the preset power threshold, further judging whether the signal loss duration of the master station which is currently established with the terminal equipment of the remote station is greater than the preset loss time threshold: if the preset unlocking time threshold is larger than the preset unlocking time threshold, performing attribution switching to enable terminal equipment of a remote station to be switched to establish a link with the other master station in the first master station and the second master station, performing attribution judgment in a circulating mode, otherwise, keeping the established link temporarily not to be switched, and performing attribution judgment in a circulating mode; and if the received signal is not lower than the preset demodulation threshold and the preset power threshold, performing the attribution judgment in a circulating way.
5. The 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, wherein the normal locking is realized by presetting carrier parameters of the first master station and the second master station, and the carrier parameters comprise frequency points, bandwidths, FEC and modulation modes;
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 perform a home decision based on a signal quality of the received carrier signal: judging whether a carrier signal of a main station which is currently established with the terminal equipment of the remote station is lower than a preset receiving threshold or not, wherein the preset receiving threshold comprises a preset demodulation threshold and a preset power threshold, specific values are set according to different carrier bandwidths and modulation modes, and the main station which is currently established with the terminal equipment of the remote station is one main station of the first main station and the second main station; if the signal duration of the primary station which is currently established with the terminal equipment of the remote station is lower than a preset demodulation threshold and a preset power threshold, further judging whether the signal duration of the primary station which is currently established with the terminal equipment of the remote station is greater than a preset unlocking time threshold; if the preset unlocking time threshold is larger than the preset unlocking time threshold, home switching is carried out, so that terminal equipment of the remote station is switched to establish a link with the other master station in the first master station and the second master station, home judgment is circularly carried out, otherwise, the established link is kept to be temporarily not switched, and home judgment is circularly carried out; and if the received signal is not lower than the preset demodulation threshold and the preset power threshold, performing the attribution judgment in a circulating way.
6. An electronic device, comprising: at least one processor and memory; wherein the memory stores computer-executable instructions; the method of claim 1 or 3, wherein the computer-executable instructions stored in the memory, when executed by the at least one processor, cause the at least one processor to perform the satellite remote station dual homing handoff method.
7. A computer readable storage medium having stored thereon a computer program which, when executed by a processor, controls a device in which the storage medium resides to perform a satellite remote station dual homing handover method according to claim 1 or 3.
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