CN116506899B - Delay processing method, login method, device, master station, small station and storage medium - Google Patents
Delay processing method, login method, device, master station, small station and storage medium Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
- H04W28/09—Management thereof
- H04W28/0925—Management thereof using policies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
- H04W28/09—Management thereof
- H04W28/0958—Management thereof based on metrics or performance parameters
- H04W28/0967—Quality of Service [QoS] parameters
- H04W28/0975—Quality of Service [QoS] parameters for reducing delays
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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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
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention relates to the technical field of satellite communication, and provides a delay processing method, a login method, a device, a master station, a small station and a storage medium, wherein the delay processing method comprises the following steps: acquiring the processing delay of the latest preset times, wherein the processing delay is the delay required by processing a login request sent by a small station to a master station; smoothing the processing delay of the latest preset times to obtain a reference delay; if the reference delay is greater than the preset threshold, when broadcasting the system information required by the small station login to the small station, adding the reference delay into the system information and sending the system information to the small station so that the small station can retry the login request according to the reference delay. The invention can solve the problem that the login request retry is unreasonable after the satellite substation waits for overtime.
Description
Technical Field
The invention relates to the technical field of satellite communication, in particular to a delay processing method, a login method, a device, a master station, a small station and a storage medium.
Background
The satellite substation initiates a login request to the satellite main station through login and control time slots, the login process comprises user verification of the satellite substation, substation capability, configuration of an IP address of the substation and the like, and the satellite substation waiting timeout is caused because the satellite links between the satellite main station and a satellite and between the satellite substation and the satellite are unstable, and the login request sent by the satellite substation and the response of the satellite main station to the login request can be lost due to the instability of the satellite links.
Disclosure of Invention
The invention aims to provide a delay processing method, a login method, a device, a master station, a small station and a storage medium, which can solve the problem that a satellite small station is unreasonable in login request retry after waiting for overtime.
Embodiments of the invention may be implemented as follows:
in a first aspect, the present invention provides a delay processing method applied to a master station, the master station and a small station communicating through a satellite, the method comprising:
acquiring the processing delay of the latest preset times, wherein the processing delay is the delay required by processing a login request sent by the small station to the master station;
smoothing the processing delay of the latest preset times to obtain a reference delay;
and if the reference delay is larger than a preset threshold value, adding the reference delay into the system information and sending the system information to the small station when broadcasting the system information required by the small station to log in, so that the small station performs login request retry processing according to the reference delay.
In an alternative embodiment, the master station stores a plurality of accuracy units and a maximum value represented by each accuracy unit in advance, and the step of adding the reference delay to the system information and transmitting the reference delay to the small station, so that the small station performs a login request retry process according to the reference delay includes:
Determining a target precision unit from the plurality of precision units, the maximum value represented by the target precision unit being greater than or equal to the reference delay and closest to the reference delay;
determining delay information according to the reference delay and the target precision unit;
determining precision information according to the target precision unit, wherein the delay information and the precision information characterize the reference delay;
and adding the delay information and the precision information into the system information and sending the system information to the small station so that the small station obtains the reference delay according to the delay information and the precision information and performs login request retry processing according to the reference delay.
In an alternative embodiment, the method further comprises:
and if the reference delay is not greater than the preset threshold value, broadcasting system information to the small station directly.
In a second aspect, the present invention provides a logging method applied to a small station, the small station and a master station communicating via satellite, the method comprising:
receiving system information which is transmitted by the master station and is required by the small station login;
if the system information comprises reference delay, performing login request retry processing according to the reference delay;
The reference delay is obtained by the master station after acquiring and smoothing the processing delay of the latest preset times when the reference delay is larger than a preset threshold value and when broadcasting system information required for logging in of the small station to the small station, the reference delay is added to the system information and is transmitted to the small station, and the processing delay is required by the master station to process a logging-in request transmitted by the small station to the master station.
In an alternative embodiment, the step of performing the login request retry process according to the reference delay includes:
if the reference delay is smaller than or equal to the preset maximum delay, acquiring the transmission delay required by information transmission between the master station and the small station;
calculating the retry waiting duration according to the transmission delay and the reference delay;
after waiting for the retry waiting time, resending a login request to the master station;
and if the reference delay is greater than the preset maximum delay, suspending sending a login request to the master station.
In an alternative embodiment, the method further comprises:
and if the system information does not comprise the reference delay, after waiting for the default delay, retransmitting a login request to the master station.
In a third aspect, the present invention provides a delay processing apparatus for use in a primary station, the primary station and a small station communicating via satellite, the apparatus comprising:
the acquisition module is used for acquiring the processing delay of the latest preset times, wherein the processing delay is required by processing a login request sent by the small station to the master station;
the processing module is used for carrying out smoothing processing on the processing delay of the latest preset times to obtain a reference delay;
and the sending module is used for adding the reference delay to the system information and sending the system information to the small station when broadcasting the system information required by the small station for logging in to the small station if the reference delay is larger than a preset threshold value, so that the small station performs login request retry processing according to the reference delay.
In a fourth aspect, the present invention provides a logging device for use in a small station, the small station and a master station communicating via satellite, the device comprising:
the receiving module is used for receiving system information which is transmitted by the master station and is required by the small station login;
the retry module is used for carrying out login request retry processing according to the reference delay if the system information comprises the reference delay;
The reference delay is obtained by the master station after acquiring and smoothing the processing delay of the latest preset times when the reference delay is larger than a preset threshold value and when broadcasting system information required for logging in of the small station to the small station, the reference delay is added to the system information and is transmitted to the small station, and the processing delay is required by the master station to process a logging-in request transmitted by the small station to the master station.
In a fifth aspect, the present invention provides a primary station comprising a processor and a memory, the memory being for storing a program, the processor being for implementing the delay processing method of any one of the preceding embodiments when the program is executed.
In a sixth aspect, the present invention provides a workstation comprising a processor and a memory, the memory being for storing a program, the processor being for implementing the login method of any of the preceding embodiments when the program is executed.
In a seventh aspect, the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the delay processing method of any one of the foregoing embodiments, or implements the login method of any one of the foregoing embodiments.
Compared with the prior art, the method and the device have the advantages that firstly, the delay required by the processing of the login request sent by the small station to the master station for the latest preset times is acquired, the delay is smoothed, the reference delay is obtained, if the reference delay is larger than the preset threshold value, the reference delay is added to the system information when the system information required by the small station login is broadcasted to the small station, the small station carries out the login request retry processing according to the reference delay, the reference delay is obtained according to the processing delay of the master station for the latest preset times, the current processing capacity of the master station can be accurately reflected, and the system information is originally sent to the small station by the master station, and the reference delay is added to the system information, so that the small station can carry out reasonable login request retry according to the reference delay under the condition that the interaction times between the master station and the small station are not increased.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is an exemplary diagram of an application scenario provided in this embodiment.
Fig. 2 is an exemplary diagram of login interaction between a master station and a small station provided in this embodiment.
Fig. 3 is a block schematic diagram of a master station according to this embodiment.
Fig. 4 is a block diagram of a small station according to the present embodiment.
Fig. 5 is a flowchart illustrating an example of a delay processing method according to the present embodiment.
Fig. 6 is a flowchart illustrating an example of a delay processing method according to the present embodiment.
Fig. 7 is a flowchart illustrating a login method according to the present embodiment.
Fig. 8 is a flowchart illustrating an example of a login method according to the present embodiment.
Fig. 9 is a block diagram of a delay processing device according to this embodiment.
Fig. 10 is a block diagram of a login device according to the present embodiment.
Icon: 10-a master station; 11-a first processor; 12-a first memory; 13-a first bus; 20-substation; 21-a second processor; 22-a second memory; 23-a second bus; 30-communication satellites; 100-delay processing means; 110-an acquisition module; 120-a processing module; 130-a transmitting module; 200-logging in the device; 210-a receiving module; 220-retry module.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
A typical very small caliber satellite terminal station VSAT (Very Small Aperture Terminal, VSAT) satellite communication system is composed of a master station 10, a small station 20 and a communication satellite 30, please refer to fig. 1, fig. 1 is an exemplary diagram of an application scenario provided in this embodiment, in fig. 1, the small station 20 sends a signal to the master station 10 through the communication satellite 30, and the master station 10 sends the signal to another small station 20 through the communication satellite to achieve intercommunication, i.e. the intercommunication is achieved through a "double-hop" mode of the small station-communication satellite-master station-communication satellite-small station.
The master station 10 is also called a central station, a hub station or a satellite master station, and uses a large antenna, so that the master station 10 is responsible for general network management, and is responsible for receiving and transmitting information among all VSAT small stations, namely has a control function.
The small station 20, also known as a remote station or satellite small station, uses a small-bore antenna to interact with other small stations 20 by communicating with the master station 10.
In fig. 1, a small station 20 initiates a login request to a master station 10 through a login and control timeslot, a login process includes user authentication of the small station, capability of the small station, configuration of an IP address of the small station, and the like, the master station 10 responds to the login request, and the small station 20 performs login, as a specific implementation manner, a two-step authenticated login manner is adopted between the small station 20 and the master station 10, please refer to fig. 2, fig. 2 is an exemplary diagram of login interaction between the master station and the small station provided in this embodiment, and in fig. 2, interaction between the two is as follows:
S1: the master station 10 periodically broadcasts system information including terminal information messages, a superframe schedule, a login allocation table, and the like. The terminal information message contains the information of the minimum version requirement of the terminal, dynamic host configuration protocol (DHCP (Dynamic Host Configuration Protocol, DHCP)), reverse link polarization direction, default link configuration, correction control, login competition, satellite forward link configuration and the like. The superframe schedule includes information such as a tag of a superframe sequence, polarization of a reverse link, roll-off coefficient of a superframe, superframe start Time, center frequency, BTU (english collectively referred to as Bandwidth-Time Unit), and the like. The login allocation table indicates a superframe sequence, a frame number of login slots included in the superframe, a login frame number, a BTU number in the login frame, and a number of continuous BTUs in the login frame.
S2: after the small station 20 is started, system information periodically broadcast by the main station 10 is received, and a login process is triggered.
S3: the small station 20 sends a first login request to the master station 10, where the first login request includes Account (i.e. Account information of the user), authen_info (i.e. authorization verification information of the user, currently a two-way verification mechanism is used), hw_ver (i.e. hardware version number, including hardware type+hardware version information), sw_ve (i.e. software version number), HID: (English: hareware Identifier, chinese is hardware number), device_capability (i.e., the forward/reverse capability of the workstation 20).
S4: the master station 10 responds to the first login request, and the message responding to the first login request includes information such as a control allocation descriptor, a login response descriptor, and a login authentication request descriptor.
S5: the small station 20 sends a second login request to the master station 10, the second login request including Account (i.e. Account information of the user), and authen_info (i.e. authorization verification information of the user, a two-way verification mechanism being currently adopted).
S6: the master station 10 responds to the second login request by including the Device IP Addr (i.e. the IP address allocated by the master station to the small station) in the second login request message.
In the above interaction process, the processing flow of each login request by the master station 10 is subjected to the complex interaction authorized by the read-write database and the configuration gateway, and the host security service HSS (Host Security Service, HSS) generates a first processing delay and a second processing delay in fig. 2, where when the system load of the master station 10 is large, the first processing delay and the second processing delay increase, for example, the first processing delay may increase from 20ms to 2000ms, and the second processing delay may increase from 20ms to 1500ms.
Because of the unstable satellite link between the primary station 10 and the small station 20 and the communication satellite 30, both the login request sent by the small station 20 and the response of the primary station 10 to the login request may be lost due to the unstable satellite link, thereby causing the small station 20 to wait for a timeout to re-initiate the request. There are two main types of timeout retry strategies in common use:
(1) A fixed timeout strategy, such as one retry every 700ms or one retry every 1000ms, etc.
(2) Exponential backoff strategy: such as a first 700ms retry, a second 1400ms (7002) Retry, third 2800ms (700 +.>4) Heavy weightTry once, etc.
However, the current load situation of the master station 10 is not considered by the above strategies, and when the master station 10 is under different loads, retry login requests according to the above strategies are unreasonable, which affects the login of the small station 20, for example:
(a) A fixed timeout strategy is employed: if the small station 20 retries the first login request every 700ms, in case the master station is idle: fixed satellite link transmission delay (600 ms) +first processing delay (20 ms) =first logging delay (620 ms), 700ms interval selection being appropriate; if the primary station is busy: fixed satellite link transmission delay (600 ms) +first processing delay (2000 ms) =first logging delay (2020 ms), it is clear that 700ms time interval selection is extremely unsuitable, not only leading to waste of air interface resources, but also a large number of repeated first logging requests at the master station, which wastes processing resources.
(b) An exponential backoff strategy is adopted: in the case where the primary station 10 is relatively idle, an exponential backoff of 620ms, 700ms is appropriate for the first login delay; if the primary station 10 is busy, an exponential backoff with a first logging delay of 2020ms,700ms is not appropriate.
Therefore, how to select a proper retry time of the login request is a technical difficulty, and when the retry time of the login request is too small, a large number of repeated requests are sent to the master station 10 when the master station 10 is busy, satellite air resources and satellite master station processor resources are wasted, and when the retry time of the login request is too large, the login time of the small station 20 is relatively long even when the master station 10 is idle.
The inventors have made a careful study on this technical difficulty, and have proposed a delay processing method, a login method, an apparatus, a master station, a small station, and a storage medium, the core improvement of which is that by adding a reference delay accurately reflecting the current processing capability of the master station to system information to the small station 20, the small station 20 can perform a rational login request retry in consideration of the current processing capability of the master station according to the reference delay, which will be described in detail below.
Referring to fig. 3, fig. 3 is a block schematic diagram of a master station 10 provided in this embodiment, the master station 10 is the master station in fig. 1 or fig. 2, the master station 10 includes a first processor 11, a first memory 12 and a first bus 13, and the first processor 11 is electrically connected to the first memory 12 through the first bus 13.
The first processor 11 may be an integrated circuit chip with signal processing capabilities. In an implementation, the steps of the delay processing method applied to the primary station 10 may be performed by means of instructions in the form of integrated logic circuits of hardware or software in the first processor 11. The first processor 11 may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU for short), a network processor (Network Processor, NP for short), etc.; but also digital signal processors (Digital Signal Processing, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate arrays (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.
The first memory 12 is used to store programs such as delay processing means in the embodiments described below. The delay processing device 100 comprises at least one software functional module which may be stored in the first memory 12 in the form of software or firmware (firmware) or which is solidified in the master station 10. The first processor 11, upon receiving the execution instruction, executes a program to implement the delay processing method applied to the master station 10 disclosed in the above embodiment.
Referring to fig. 4, fig. 4 is a block schematic diagram of a small station 20 provided in the present embodiment, the small station 20 is the small station in fig. 1 or fig. 2, the small station 20 includes a second processor 21, a second memory 22 and a second bus 23, and the second processor 21 is electrically connected to the second memory 22 through the second bus 23.
The second processor 21 may be an integrated circuit chip with signal processing capabilities. In an implementation, the steps of the login method applied to the small station 20 may be accomplished by instructions in the form of integrated logic circuits of hardware or software in the second processor 21. The second processor 21 may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU for short), a network processor (Network Processor, NP for short), etc.; but also digital signal processors (Digital Signal Processing, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate arrays (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.
The second memory 22 is used to store programs, such as login devices in the embodiments described below. The logging device 200 comprises at least one software function module which may be stored in the second memory 22 in the form of software or firmware (firmware) or which is solidified in the workstation 20. The second processor 21, upon receiving the execution instruction, executes a program to implement the login method applied to the small station 20 disclosed in the above embodiment.
Based on the foregoing fig. 1-4, the present embodiment provides a delay processing method applied to the master station 10 in the foregoing fig. 1-4, please refer to fig. 5, fig. 5 is a flowchart illustration of the delay processing method provided in the present embodiment, the method includes:
step S101, a processing delay of the latest preset number of times, which is a delay required for processing a login request sent by a small station to a master station, is acquired.
In this embodiment, the processing delay of the login request sent by the small station 20 to the master station 10 is the delay required by the master station 10 to process the login request, and the processing of the login request includes, but is not limited to, reading and writing a data block, configuring a gateway, authorizing an HSS, and the like, the small station 20 may use one login request, the master station 10 responds to the small station 20 after performing one login request processing, the small station 20 receives a response and then performs a login successfully, the small station 20 may also use a secondary login request, for example, the login procedure shown in fig. 2, the master station 10 performs part of processing each time of the login request response, and the small station 20 performs a login successfully after receiving the second login request response. The preset number of times may be determined according to actual needs, for example, the preset number of times is 3.
Step S102, smoothing the processing delay of the latest preset times to obtain a reference delay.
In this embodiment, the smoothing process is also called a filtering process, and the filtering manner includes, but is not limited to, mean filtering, median filtering, gaussian filtering, and the like, for example, for the mean filtering, the average value of the processing delays of the preset times may be calculated, and the reference delay may be obtained.
In this embodiment, if the secondary login request is adopted by the small station 20, the master station 10 may perform smoothing processing for the processing delay of the preset number of times of each login request, respectively, to obtain the reference delay for each login request.
Step S103, if the reference delay is larger than the preset threshold, when broadcasting the system information required by the small station login to the small station, adding the reference delay to the system information and sending the system information to the small station so that the small station can retry the login request according to the reference delay.
In this embodiment, the preset threshold may be determined according to actual needs, if the secondary login request is adopted by the small station, the master station 10 sets a preset threshold for each request, and for each login request, the reference delay is added to the system information and sent to the small station 20 if the reference delay is greater than the preset threshold, for example, the reference delay of the first login request is a first reference delay, corresponding to the first preset threshold, the reference delay of the second login request is a second reference delay, corresponding to the second preset threshold, if the first reference delay is greater than the first preset threshold, the first reference delay is added to the system information, and if the second reference delay is greater than the second preset threshold, the second reference delay is added to the system information, so according to the actual situations of the first reference delay and the second reference delay, the system information may have only the first reference delay, the second reference delay may have the first reference delay and the second reference delay at the same time, or may have neither the first reference delay nor the second reference delay. The first preset threshold and the second preset threshold may be the same or different, e.g., both 50ms.
In the present embodiment, the master station 10 periodically broadcasts system information, which is information required for the small station 20 to log in.
According to the method provided by the embodiment, the reference delay is obtained according to the processing delay of the last preset times of the master station 10, so that the current processing capability of the master station 10 can be accurately reflected, and the reference delay can be brought to the small station 20 under the condition that the interaction times between the master station 10 and the small station 20 are not increased by adding the reference delay to the system information, so that the small station 20 can retry a reasonable login request according to the reference delay.
In this embodiment, as an implementation manner, the reference delay may be directly added to the system information, since the reference delay is determined according to the current processing capability of the master station, the size of the reference delay may be greatly different according to the current load of the master station, in this manner, in order to add the reference delay to the system information, the maximum value of the bit occupied by the maximum reference delay needs to be estimated, so that the reference delay with various different sizes can be represented, if the estimation is inaccurate, for example, the estimated maximum reference delay occupies 8 bits, the maximum value that can be represented at this time is 256, assuming that the unit is preset to ms, that is, the maximum reference delay represented by 8 bits is 256ms, if the load of the master station 10 is relatively large at a certain time, the calculated reference delay is 300ms, and in this case, the 8 bits cannot represent the reference delay, if a relatively large bit, for example, 32 bits are set for the maximum reference delay, so that the reference delay may be mostly used up to be a waste of 32 bits in the system information caused by this.
In order to use as few bits as possible to represent richer reference delays, so that reference delays of different sizes can be represented, and meanwhile, the waste of bits in the system information is not caused, and another implementation manner of adding the reference delay to the system information and transmitting the reference delay to a small station is provided in the embodiment:
first, a target precision unit is determined from a plurality of precision units, the maximum value represented by the target precision unit being greater than or equal to the reference delay and closest to the reference delay.
In this embodiment, the reference delay is characterized by delay information and precision information, the precision information is used for characterizing the precision of the delay information, the master station stores a plurality of precision units and a maximum value represented by each precision unit in advance, scales corresponding to each precision unit are different, the delay information is different, and the reference delay obtained according to the precision information and the delay information is also different. As an embodiment, the precision information occupies 3 bits, the delay information occupies 5 bits, and the precision unit and the corresponding scale and value range are shown in table 1:
TABLE 1
In table 1, the accuracy unit is 0, the corresponding scale is 2ms, the range of the reference delay is 0-32, that is, the maximum reference delay is 32, and other accuracy units are similar to the above, and are not described here again. For example, if the precision unit 3 bits is 000, the corresponding value is 0, the corresponding scale is 2ms, the 5 bits of the delay information is 00111, and the corresponding value is 7, the reference delay=2 ms 7=14 ms. According to table 1, when the reference delay is 200ms, the maximum value represented by the precision unit is greater than 200ms, and the nearest target precision unit to 200ms is 2, and 3 bits are 010.
Next, delay information is determined based on the reference delay and the target accuracy unit.
Third, accuracy information is determined based on the target accuracy units, and the delay information and the accuracy information characterize the reference delay.
In this embodiment, taking table 1 as an example, if the reference delay is 200ms, the target precision unit is 2, and the progress information is represented by 3 bits: 010, the delay information is calculated by: 200ms/10 ms=20, and the delay information is expressed as 5 bits: 0010100, i.e. 20, whereby delay information and accuracy information can be determined.
And finally, adding the delay information and the precision information into the system information and transmitting the system information to the small station, so that the small station obtains reference delay according to the delay information and the precision information, and retries the login request according to the reference delay.
In this embodiment, in order to add delay information and precision information to system information, taking reference delay as 2 examples, as an implementation manner, a descriptor logo_delay_descriptor (i.e. a login delay descriptor) may be newly added to the system information, where the descriptor includes information of the first reference delay and the second reference delay. The master station 10 periodically broadcasts system information, including a login delay descriptor. An example of a login delay descriptor is shown in table 2 below:
TABLE 2
In table 2:
descriptor_tag: an 8-bit field indicating the descriptor type;
descriptor_length: an 8-bit field indicating the number of bytes allocated by the description immediately following the descriptor_length field;
auth1_delay: processing delay of processing the first login request;
auth2_delay: processing delay of processing the second login request;
the definition of the auth1_delay/auth2_delay 8bit information bits is shown in Table 3 below:
TABLE 3 Table 3
The master station 10 adds the reference delay to the system information via the logging delay descriptor in table 2, broadcast out with the system information to reach the small station 20.
The method provided by the embodiment is suitable for representing with finer precision when the delay is smaller, suitable for representing with coarser granularity when the delay is larger, for example, the reference delay is 3000ms, the influence of the precision error of the unit number on the reference delay is negligible, and the appropriate precision unit is selected for the reference delay according to the specific size of the reference delay, so that more reasonable representation of richer information of reference delay by using fewer bit positions is realized, and the waste of resources in system information is avoided.
In this embodiment, if the reference delay is greater than the preset threshold, in order to reduce the influence on the data amount of the system information as much as possible, the embodiment further provides such a scenario processing manner, please refer to fig. 6, fig. 6 is a flowchart illustrating an example of the delay processing method provided in this embodiment, and the method further includes step S104:
Step S104, if the reference delay is not greater than the preset threshold, the system information is directly broadcast to the small station.
Based on the foregoing fig. 1-4, the present embodiment further provides a login method applied to the small station 20 in the foregoing fig. 1-4, please refer to fig. 7, fig. 7 is a flowchart illustration of the login method provided in the present embodiment, the method includes the following steps:
step S201, receiving system information which is transmitted by a master station and is required for logging in a small station.
Step S202, if the system information includes reference delay, performing login request retry processing according to the reference delay;
the reference delay is obtained after the master station acquires the processing delay of the latest preset times and performs smoothing processing on the processing delay, wherein the processing delay is required by the master station to process a login request sent by a small station to the master station when the master station determines that the reference delay is larger than a preset threshold value and broadcasts the system information required by the small station login to the small station, and the reference delay is added to the system information and is sent to the small station.
In this embodiment, whether the current load of the master station 10 is large enough is determined according to the reference delay, if the load is too large, the retry is suspended, otherwise, the retry waiting time is determined according to the reference delay, and the login request retry is performed after waiting for the retry waiting time, which is a feasible implementation manner:
If the reference delay is smaller than or equal to the preset maximum delay, acquiring the transmission delay required by information transmission between the master station and the small station;
calculating retry waiting time according to the transmission delay and the reference delay;
after waiting for the retry waiting time, re-sending a login request to the master station;
if the reference delay is greater than the preset maximum delay, the transmission of the login request to the master station is suspended.
In this embodiment, the preset maximum delay may be determined according to an empirical value, for example, the preset maximum delay is 3000ms. For the scene of two login requests, different preset maximum delays can be set for different login requests respectively.
In this embodiment, the transmission delay includes 4 time periods, which are respectively: the time consumption 1 of the small station sending the login request to the communication satellite, the time consumption 2 of the communication satellite forwarding the login request to the master station, the time consumption 3 of the master station sending the login request to the communication satellite in response to the login request, and the time consumption 4 of the communication satellite forwarding the login request to the small station. The time consumption 1-4 is determined by the distance between the ground and the communication satellite, so the 4 time consumption can be considered as equal, and for the geostationary satellite with circular orbit, the orbit radius is 42164 km, the light speed is 299792.458 km/s, and the light speed is about 30000 km/s, so the 4 time consumption calculation modes can be obtained by using the orbit radius/light speed, and the estimated value is: 42164/30000, approximately equal to 141ms, so the transmission delay is approximately equal to 560ms. The transmission delay plus the reference delay results in a retry waiting period.
In this embodiment, the master station 10 stores a plurality of precision units and a maximum value represented by each precision unit in advance, the reference delay is characterized by delay information and precision information, the delay information is determined by the master station 10 according to the reference delay and the target precision unit, and the precision information is determined by the master station 10 according to the target precision unit; the target accuracy unit is determined by the master station 10 from a plurality of accuracy units, and the maximum value represented by the target accuracy unit is greater than or equal to the reference delay and is closest to the reference delay.
When the small station receives the delay information and the precision information, the reference delay characterized by the delay information and the precision information is calculated according to the delay information and the precision information. And calculating the retry waiting time according to the reference delay and the transmission delay.
In this embodiment, if the master station determines that the reference delay is not greater than the preset threshold, and at this time, system information is not added to the reference delay, the embodiment further provides an implementation manner for handling this situation, please refer to fig. 8, fig. 8 is a flowchart illustrating an example of the login method provided in this embodiment, and the method further includes step S203:
step S203: if the system information does not include the reference delay, the login request is sent to the master station again after waiting for the default delay.
In this embodiment, the default delay may be determined based on the estimated time spent by the master station on login requests at normal load.
In order to perform the respective steps of the above embodiments and the various possible implementations, an implementation of the delay processing device 100 is given below. Referring to fig. 9, fig. 9 is a block diagram of a delay processing device 100 according to the present embodiment. It should be noted that, the basic principle and the technical effects of the delay processing device 100 provided in this embodiment are the same as those of the above embodiment, and for brevity, this embodiment is not mentioned in the section.
The delay processing device 100 includes an acquisition module 110, a processing module 120, and a sending module 130.
An obtaining module 110, configured to obtain a processing delay of a latest preset number of times, where the processing delay is a delay required for processing a login request sent by a small station to a master station;
a processing module 120, configured to perform smoothing on the processing delay of the latest preset number of times to obtain a reference delay;
and the sending module 130 is configured to, if the reference delay is greater than the preset threshold, add the reference delay to the system information and send the system information to the small station when broadcasting the system information required for the small station to log in to the small station, so that the small station performs a retry process of the login request according to the reference delay.
In an alternative embodiment, the master station stores a plurality of precision units and a maximum value represented by each precision unit in advance, and the sending module 130 is specifically configured to: determining a target precision unit from a plurality of precision units, wherein the maximum value represented by the target precision unit is larger than or equal to the reference delay and is closest to the reference delay; determining delay information according to the reference delay and the target precision unit; determining precision information according to the target precision unit, wherein the delay information and the precision information represent reference delay; and adding the delay information and the precision information into the system information and transmitting the system information to the small station so that the small station obtains reference delay according to the delay information and the precision information and performs login request retry processing according to the reference delay.
In an alternative embodiment, the sending module 130 is further configured to: if the reference delay is not greater than the preset threshold, the system information is directly broadcast to the small station.
In order to perform the above-described embodiments and corresponding steps in each of the possible embodiments, an implementation of the login device 200 is given below. Referring to fig. 10, fig. 10 is a block diagram of a registration apparatus 200 according to the present embodiment. It should be noted that, the basic principle and the technical effects of the login device 200 provided in this embodiment are the same as those of the above embodiment, and for brevity, the description of this embodiment is not mentioned in this section.
The login device 200 comprises a receiving module 210 and a retry module 220.
A receiving module 210, configured to receive system information sent by a master station and required for a small station to log in;
a retry module 220, configured to, if the system information includes a reference delay, retry the login request according to the reference delay; the reference delay is obtained after the master station acquires the processing delay of the latest preset times and performs smoothing processing on the processing delay, wherein the processing delay is required by the master station to process a login request sent by a small station to the master station when the master station determines that the reference delay is larger than a preset threshold value and broadcasts the system information required by the small station login to the small station, and the reference delay is added to the system information and is sent to the small station.
In an alternative embodiment, the retry module 220 is specifically configured to: if the reference delay is smaller than or equal to the preset maximum delay, acquiring the transmission delay required by information transmission between the master station and the small station; calculating the retry waiting time according to the transmission delay and the reference delay; after waiting for the retry waiting time, re-sending a login request to the master station; if the reference delay is greater than the preset maximum delay, the transmission of the login request to the master station is suspended.
In an alternative embodiment, the retry module 220 is further configured to: if the system information does not include the reference delay, the login request is sent to the master station again after waiting for the default delay.
The present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the delay processing method in the foregoing embodiment, or implements the login method in the foregoing embodiment.
In summary, the embodiment of the present invention provides a delay processing method, a login method, a device, a master station, a small station and a storage medium, where the delay processing method applied to the master station includes: acquiring the processing delay of the latest preset times, wherein the processing delay is the delay required by processing a login request sent by a small station to a master station; smoothing the processing delay of the latest preset times to obtain a reference delay; if the reference delay is greater than the preset threshold, when broadcasting the system information required by the small station login to the small station, adding the reference delay into the system information and sending the system information to the small station so that the small station can retry the login request according to the reference delay. Compared with the prior art, the embodiment of the invention has at least the following advantages: (1) The master station performs smoothing processing according to the delay required by the login request sent by the latest preset processing small station to the master station to obtain reference delay, so that the reference delay can accurately reflect the current processing capacity of the master station, and the small station can reasonably retry the login request based on the reference delay to realize the login of the small station in reasonable time; (2) Adding the reference delay in the system information and issuing the reference delay to the small station, so that the reference delay can be sent to the small station without additionally increasing interaction between the main station and the small station; (3) The reference delay is characterized by utilizing the precision information and the delay information, on one hand, a proper precision unit can be selected according to the size of the reference delay, so that the granularity control of the login request retry is richer and more reasonable, on the other hand, the precision information and the delay information occupy as little data volume as possible, and the richer reference delay information is transmitted under the condition of occupying as little data volume as possible, so that the master station cannot be occupied with excessive bandwidth; (4) And when the reference delay is not greater than the preset threshold, the system information is directly sent according to the normal original flow without adding extra signaling to occupy valuable channel resources.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (11)
1. A delay processing method applied to a master station, the master station and a small station communicating via satellite, the method comprising:
acquiring the processing delay of the latest preset times, wherein the processing delay is the delay required by processing a login request sent by the small station to the master station;
smoothing the processing delay of the latest preset times to obtain a reference delay;
and if the reference delay is larger than a preset threshold value, adding the reference delay into the system information and sending the system information to the small station when broadcasting the system information required by the small station to log in, so that the small station performs login request retry processing according to the reference delay.
2. The delay processing method of claim 1, wherein the master station stores in advance a plurality of precision units and a maximum value represented by each of the precision units, and wherein the step of adding the reference delay to the system information and transmitting to the small station so that the small station performs the login request retry processing according to the reference delay comprises:
Determining a target precision unit from the plurality of precision units, the maximum value represented by the target precision unit being greater than or equal to the reference delay and closest to the reference delay;
determining delay information according to the reference delay and the target precision unit;
determining precision information according to the target precision unit, wherein the delay information and the precision information characterize the reference delay;
and adding the delay information and the precision information into the system information and sending the system information to the small station so that the small station obtains the reference delay according to the delay information and the precision information and performs login request retry processing according to the reference delay.
3. The delay processing method of claim 1, wherein the method further comprises:
and if the reference delay is not greater than the preset threshold value, broadcasting system information to the small station directly.
4. A logging method applied to a small station, said small station and a master station communicating via satellite, said method comprising:
receiving system information which is transmitted by the master station and is required by the small station login;
if the system information comprises reference delay, performing login request retry processing according to the reference delay;
The reference delay is obtained by the master station after acquiring and smoothing the processing delay of the latest preset times when the reference delay is larger than a preset threshold value and when broadcasting system information required for logging in of the small station to the small station, the reference delay is added to the system information and is transmitted to the small station, and the processing delay is required by the master station to process a logging-in request transmitted by the small station to the master station.
5. The login method according to claim 4, wherein said step of performing a login request retry process according to said reference delay includes:
if the reference delay is smaller than or equal to the preset maximum delay, acquiring the transmission delay required by information transmission between the master station and the small station;
calculating retry waiting time according to the transmission delay and the reference delay;
after waiting for the retry waiting time, resending a login request to the master station;
and if the reference delay is greater than the preset maximum delay, suspending sending a login request to the master station.
6. The login method of claim 4, wherein said method further comprises:
And if the system information does not comprise the reference delay, after waiting for the default delay, retransmitting a login request to the master station.
7. A delay processing device for use in a master station, said master station and a small station communicating via satellite, said device comprising:
the acquisition module is used for acquiring the processing delay of the latest preset times, wherein the processing delay is required by processing a login request sent by the small station to the master station;
the processing module is used for carrying out smoothing processing on the processing delay of the latest preset times to obtain a reference delay;
and the sending module is used for adding the reference delay to the system information and sending the system information to the small station when broadcasting the system information required by the small station for logging in to the small station if the reference delay is larger than a preset threshold value, so that the small station performs login request retry processing according to the reference delay.
8. A logging device for use with a small station, said small station and a master station communicating via satellite, said device comprising:
the receiving module is used for receiving system information which is transmitted by the master station and is required by the small station login;
the retry module is used for carrying out login request retry processing according to the reference delay if the system information comprises the reference delay;
The reference delay is obtained by the master station after acquiring and smoothing the processing delay of the latest preset times when the reference delay is larger than a preset threshold value and when broadcasting system information required for logging in of the small station to the small station, the reference delay is added to the system information and is transmitted to the small station, and the processing delay is required by the master station to process a logging-in request transmitted by the small station to the master station.
9. A primary station comprising a processor and a memory, the memory being for storing a program, the processor being for implementing the delay processing method of any one of claims 1 to 3 when the program is executed.
10. A workstation comprising a processor and a memory, said memory for storing a program, said processor being adapted to implement the login method of any one of claims 4-6 when said program is executed.
11. A computer readable storage medium, characterized in that a computer program is stored thereon, which, when being executed by a processor, implements the delay processing method of any of claims 1-3 or implements the login method of any of claims 4-6.
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