CN115549762A - Satellite communication session processing method, computer device and storage medium - Google Patents
Satellite communication session processing method, computer device and storage medium Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18519—Operations control, administration or maintenance
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N3/00—Computing arrangements based on biological models
- G06N3/02—Neural networks
- G06N3/08—Learning methods
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18513—Transmission in a satellite or space-based system
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a satellite communication session processing method, a computer device and a storage medium, wherein the satellite communication session processing method comprises the steps of determining an inter-satellite link corresponding to a PDU session, obtaining satellite constellation operation information corresponding to the inter-satellite link, predicting according to the satellite constellation operation information to obtain predicted communication delay information, configuring the PDU session according to the predicted communication delay information and the like. The invention can analyze the inter-satellite link through which the data of the satellite communication session passes, determine the communication delay possibly faced by the communication through the inter-satellite link, and make the configuration of maintaining the PDU session or releasing the PDU session according to the communication delay, and the like, and can prejudge the communication quality of the PDU session, so that the satellite communication system can maintain the PDU session with high quality more easily, avoid the occupation of the communication resources by the PDU session with low quality, and optimize the communication service quality and the resource utilization of the satellite communication system. The invention is widely applied to the technical field of satellite communication.
Description
Technical Field
The invention relates to the technical field of satellite communication, in particular to a satellite communication session processing method, a computer device and a storage medium.
Background
Satellite communications have evolved very rapidly, but there are also some drawbacks that are not apparent in terrestrial communications. Taking satellite communication implemented by means of a low-earth orbit satellite as an example, because the mobility of the low-earth orbit satellite is very strong, the propagation delay of the backhaul of the low-earth orbit satellite changes along with the movement of the satellite, and for a multi-hop ISL backhaul, the backhaul path delay may change drastically. Such unstable delay variation in the satellite backhaul has a great influence on the satellite communication quality, for example, the phenomena of unstable session, data error or incapability of session are caused, on one hand, qualified communication service cannot be provided, and on the other hand, the realization of other normal communication service is influenced by unnecessary load caused by the satellite communication system.
Interpretation of terms:
ISL: inter-Satellite Link, inter-Satellite Link;
PDU: protocol Data Unit, protocol Data Unit;
PCF: policy and Charging Function, policy and Charging Function;
AF: application Function, application Function;
AMF: access and Mobility Management Function;
LSTM: long Short-Term Memory, long Short-Term Memory;
UE: user End, user terminal.
Disclosure of Invention
The invention aims to provide a satellite communication session processing method, a computer device and a storage medium, aiming at the technical problems that in the existing satellite communication technology, the session is unstable or has errors caused by path delay of a multi-hop ISL backhaul, so that the satellite communication quality is reduced and the like.
In one aspect, an embodiment of the present invention includes a method for processing a satellite communication session, including:
establishing a PDU session;
determining an inter-satellite link corresponding to the PDU session;
acquiring satellite constellation operation information corresponding to the inter-satellite link;
predicting according to the satellite constellation operation information to obtain predicted communication delay information;
and configuring the PDU session according to the predicted communication delay information.
Further, the determining the inter-satellite link corresponding to the PDU session includes:
determining a source node and a destination node corresponding to the PDU session;
routing according to the source node and the destination node, and determining a communication satellite passing from the source node to the destination node;
and all communication satellites passing through the inter-satellite link.
Further, the obtaining of the satellite constellation operation information corresponding to the inter-satellite link includes:
determining at least a portion of the communication satellites in the inter-satellite link as target communication satellites;
and acquiring satellite constellation operation information corresponding to all the target communication satellites respectively to form the satellite constellation operation information corresponding to the inter-satellite link.
Further, the determining at least a portion of the communication satellites in the inter-satellite link as target communication satellites includes:
acquiring respective service loads of the communication satellites;
and determining a plurality of communication satellites with the highest service load as the target communication satellites.
Further, the predicting to obtain the predicted communication delay information according to the satellite constellation operation information includes:
establishing a long-term and short-term memory network;
inputting the satellite constellation operation information into the long-short term memory network for processing;
and acquiring the predicted communication delay information output by the long-term and short-term memory network.
Further, the configuring the PDU session according to the predicted communication delay information includes:
and when the predicted communication delay information is larger than a first threshold value, releasing the PDU session.
Further, the configuring the PDU session according to the predicted communication delay information includes:
and when the predicted communication delay information is larger than a second threshold and smaller than a first threshold, carrying out coding compensation on the PDU session.
Further, the encoding compensation of the PDU session includes:
acquiring a data unit to be transmitted in the PDU session;
determining a plurality of candidate coding modes; the time delay generated by different candidate coding modes is different when the same data is coded;
according to the predicted communication delay information, selecting one candidate coding mode from a plurality of candidate coding modes to determine the candidate coding mode as a target coding mode; wherein, the time delay corresponding to the selected candidate coding mode is inversely related to the size of the predicted communication delay information;
encoding the data unit in the target encoding mode.
In another aspect, an embodiment of the present invention further includes a computer apparatus, including a memory and a processor, where the memory is used to store at least one program, and the processor is used to load the at least one program to perform the satellite communication session processing method in the embodiment.
In another aspect, the present invention further includes a storage medium in which a program executable by a processor is stored, the program executable by the processor being configured to perform the satellite communication session processing method in the embodiments when executed by the processor.
The invention has the beneficial effects that: the satellite communication session processing method in the embodiment can analyze the inter-satellite link through which the data of the satellite communication session passes, determine the communication delay possibly faced by the communication through the inter-satellite link, and make configurations such as maintaining the PDU session or releasing the PDU session according to the communication delay, and can prejudge the communication quality of the PDU session, so that the satellite communication system can maintain the high-quality PDU session more easily, avoid the occupation of the communication resources by the low-quality PDU session, and optimize the communication service quality and the resource utilization of the satellite communication system.
Drawings
Fig. 1 is a schematic diagram illustrating steps of a satellite communication session processing method according to an embodiment;
FIG. 2 is a schematic diagram of the structure and operation of an exemplary satellite communication system;
FIG. 3 is a schematic diagram of an inter-satellite link according to an embodiment;
FIG. 4 is a diagram illustrating a structure of a long term memory network in an embodiment.
Detailed Description
In this embodiment, referring to fig. 1, a satellite communication session processing method includes the following steps:
s1, establishing a PDU session;
s2, determining an inter-satellite link corresponding to the PDU session;
s3, acquiring satellite constellation operation information corresponding to the inter-satellite link;
s4, forecasting according to the satellite constellation operation information to obtain forecast communication delay information;
and S5, configuring the PDU session according to the predicted communication delay information.
Steps S1-S5 may be applied in the satellite communication system shown in fig. 2. Referring to fig. 2, the satellite communication system includes a communication satellite (which may be a low-orbit satellite) operating in space, and network elements such as AMF, PCF, AF, NWDAF in a terrestrial communication core network (which may be a 5G core network, i.e., 5 GC).
Referring to fig. 2, a communication satellite is accessible to a user terminal UE, and the communication terminal may be connected to a communication core network (specifically, an AMF in the communication core network). Steps S1-S5 may be performed by a terrestrial communications core network. Specifically, steps S1 and S2 may be performed by the AMF, step S3 may be performed by the NWDAF requesting the AMF, step S4 may be performed by the NWDAF, and after the predicted communication delay information is obtained by the NWDAF performing step S4, the NWDAF may transmit the predicted communication delay information to the AMF, the predicted communication delay information may be transmitted to the PCF/AF by the AMF, and step S5 may be performed by the PCF/AF.
In this embodiment, when performing step S2, that is, determining an inter-satellite link corresponding to a PDU session, the AMF may specifically perform the following steps:
s201, determining a source node and a destination node corresponding to the PDU session;
s202, routing is carried out according to a source node and a destination node, and a communication satellite passing from the source node to the destination node is determined;
and S203, forming an inter-satellite link by all the communication satellites passing through.
Referring to fig. 3, in step S201, a source node and a destination node corresponding to the PDU session are determined, where the source node may be a terrestrial base station to which the UE shown on the leftmost side in fig. 3 is connected, and the destination node may be a 5G core network (5 GC) to which the UE shown on the rightmost side in fig. 3 is to access. In step S202, the AMF may execute a routing algorithm to determine communication satellites to be passed through from the source node to the destination node, and the communication satellites form an inter-satellite link according to a sequential connection order.
In this embodiment, when performing step S3, that is, the step of obtaining the satellite constellation operation information corresponding to the inter-satellite link, the AMF may specifically perform the following steps:
s301, determining at least part of communication satellites in the inter-satellite link as target communication satellites;
s302, satellite constellation operation information corresponding to all target communication satellites is obtained to form satellite constellation operation information corresponding to inter-satellite links.
In this embodiment, the inter-satellite link includes a plurality of communication satellites, each communication satellite is used as one hop of the inter-satellite link, and each communication satellite has its own satellite constellation operation information. Specifically, the satellite constellation operation information of each communication satellite may include contents such as acquisition time, number of satellite particles, number of orbital planes, operation period, orbital altitude, orbital inclination, operating frequency band, transmission delay, transmission rate, and charging standard, and a format of the satellite constellation operation information of each communication satellite may be as shown in table 1.
TABLE 1
| Time of acquisition | Transmission delay | Transmission rate | … | … |
| T1 | 5s | 25kbps | … | … |
| T2 | 4s | 30kbps | … | … |
| T3 | 6s | 20kbps | … | … |
| … | … | … | … | … |
In step S301, all communication satellites in the inter-satellite link may be determined as target communication satellites, and then steps S301 to S302 are executed, in fact, satellite constellation operation information corresponding to all communication satellites in the inter-satellite link is combined into satellite constellation operation information corresponding to the inter-satellite link as a whole, at this time, the satellite constellation operation information corresponding to the inter-satellite link as a whole may be stored in a vector form, the satellite constellation operation information corresponding to each communication satellite may be used as a component in the satellite constellation operation information corresponding to the inter-satellite link as a whole, and each component may be further subdivided into components such as acquisition time, satellite number, orbital plane number, and the like.
In step S302, only a part of the communication satellites in the inter-satellite link may be determined as the target communication satellites, and then steps S301 to S302 are performed, in fact, the satellite constellation operation information corresponding to the part of the communication satellites in the inter-satellite link is combined into the satellite constellation operation information corresponding to the whole inter-satellite link, at this time, the satellite constellation operation information corresponding to the whole inter-satellite link may be stored in a vector form, the satellite constellation operation information corresponding to each target communication satellite may be used as a component in the satellite constellation operation information corresponding to the whole inter-satellite link, and each component may be further subdivided into components such as acquisition time, satellite number, orbital plane number, and the like.
Under the condition that only part of the communication satellites in the inter-satellite link are determined as the target communication satellites, the quantity of components in the satellite constellation operation information corresponding to the whole inter-satellite link can be reduced, so that the data volume of the satellite constellation operation information corresponding to the whole inter-satellite link is reduced, and the data volume to be processed when the step S4 is executed is reduced.
In this embodiment, when step S301 is executed, that is, when at least a part of communication satellites in the inter-satellite link is determined as the target communication satellite, the following steps may be specifically executed:
s30101, acquiring respective service loads of all communication satellites;
and S30102, determining a plurality of communication satellites with the highest service loads as target communication satellites.
In step S30101, the traffic load of each communication satellite may be represented by a uniform index, for example, one of the indexes such as the data volume transmitted in the same time period, the number of connected user terminals at the same time, and the highest bandwidth reached at the same time is used to represent the traffic load of one communication satellite, and generally, the larger the data volume transmitted by one communication satellite, the larger the number of connected user terminals, and the larger the highest bandwidth reached, the higher the traffic load of the communication satellite is.
In step S30102, a value K (e.g., K = 3) may be set, and the K communication satellites with the highest traffic load may be determined as the target communication satellites. Thus, when step S302 is executed, the satellite constellation operation information corresponding to the respective K communication satellites with the highest service load is used to form the satellite constellation operation information corresponding to the inter-satellite link, and the satellite constellation operation information corresponding to the respective other communication satellites is not included in the satellite constellation operation information corresponding to the inter-satellite link.
By executing steps S30101-S30102, the satellite constellation operation information corresponding to the inter-satellite link comes from a high-load communication satellite, and when the same load variable occurs (for example, when the same number of user terminals establish connection or disconnect the connection), the load variation ratio of the high-load communication satellite is lower than that of the low-load communication satellite, so the satellite constellation operation information of the high-load communication satellite has better stability, and therefore the satellite constellation operation information corresponding to the inter-satellite link obtained by executing steps S30101-S30102 has better stability, and when used for performing S4 prediction, it can be expected to obtain a more accurate prediction effect, and meanwhile, the advantages of small data volume of the satellite constellation operation information corresponding to the inter-satellite link and the like are maintained.
In this embodiment, when the NWDAF performs step S4, that is, the step of predicting the predicted communication delay information according to the satellite constellation operation information, the following steps may be specifically performed:
s401, establishing a long-term and short-term memory network;
s402, inputting the satellite constellation operation information into a long-term and short-term memory network for processing;
and S403, acquiring the predicted communication delay information output by the long-term and short-term memory network.
Since the operation of the satellite constellation is time-varying and periodic, it is well suited to model the satellite constellation operational information using the LSTM model.
In step S401, the structure of the established long-short term memory network LSTM is shown in fig. 4. Wherein f is t 、i t 、o t Respectively represent a forgetting gate, an input gate and an output gate, wherein the forgetting gate is used for controlling a memory value, the input gate is used for controlling an input value, and the output gate is used for controlling an output value.
The input of the long-short term memory network LSTM can be the output h of the long-short term memory network LSTM at the last time (t-1 time) t-1 And data x at the current time (time t) t (current data x) t Can be satellite constellation operation information corresponding to the inter-satellite link at the time t);
output of long-short term memory network LSTM: final output h t . Predicted communication delay information h t The meaning of the method is that the long-short term memory network LSTM predicts according to satellite constellation operation information corresponding to the inter-satellite link, and communication delay which may be generated if the inter-satellite link is used for communication is determined.
In step S5, configuring the PDU session according to the predicted communication delay information obtained by prediction in step S4, for example, when the communication delay indicated by the predicted communication delay information is smaller than a first threshold, determining that if the communication is performed by using the inter-satellite link, the generated communication delay is low, and maintaining the PDU session is acceptable, and determining to maintain the PDU session; and when the communication delay represented by the predicted communication delay information is larger than a first threshold value, judging that the generated communication delay is higher and cannot accept the communication quality of the PDU session if the communication is carried out by the inter-satellite link, and determining to release the PDU session.
By executing the steps S1-S5, the inter-satellite link through which the data of the satellite communication session passes can be analyzed, the communication delay possibly faced by the communication through the inter-satellite link is determined, the configuration of maintaining the PDU session or releasing the PDU session and the like is made according to the communication delay, the communication quality of the PDU session can be pre-judged, the satellite communication system can maintain the high-quality PDU session more easily, the occupation of the communication resources by the low-quality PDU session is avoided, and the communication service quality and the resource utilization of the satellite communication system are optimized.
In this embodiment, before step S5 is executed, a first threshold and a second threshold may be set, and the first threshold and the second threshold have the same dimension (for example, milliseconds) as the predicted communication delay information, where the first threshold is greater than the second threshold, and the size of the predicted communication delay information may be determined by the first threshold and the second threshold.
When step S5 is executed, that is, the step of configuring the PDU session according to the predicted communication delay information, the following steps may be specifically executed:
s501, when the predicted communication delay information is larger than a first threshold value, releasing the PDU conversation;
s502, when the predicted communication delay information is larger than a second threshold and smaller than a first threshold, coding compensation is carried out on the PDU conversation.
In step S501, when the predicted communication delay information is greater than the first threshold, it is determined that if the inter-satellite link is used for communication, the generated communication delay is too high to accept the communication quality of the PDU session, and the PDU session is released, so that the low-quality PDU session is prevented from occupying resources of the satellite communication system, and the resources of the satellite communication system are used to ensure other PDU sessions.
In step S502, when the predicted communication delay information is smaller than the first threshold, it is determined that the communication delay of the inter-satellite link is not excessively high, and the PDU session does not need to be released, and since the predicted communication delay information is larger than the first threshold, it is determined that the communication delay of the inter-satellite link is at a higher level, and the influence caused by the communication delay of the inter-satellite link can be reduced by performing coding compensation on the PDU session.
When step S502, that is, the step of performing coding compensation on the PDU session, the following steps may be specifically performed:
s50201, acquiring a data unit to be transmitted in the PDU session;
s50202, determining multiple candidate coding modes; different candidate coding modes generate different time delays when the same data is coded;
s50203, selecting one candidate coding mode from multiple candidate coding modes according to the predicted communication delay information, and determining the candidate coding mode as a target coding mode; the time delay corresponding to the selected candidate coding mode is inversely related to the size of the predicted communication delay information;
s50204, the data unit is encoded in the target encoding mode.
In step S50201, the data units may have different forms at different levels in the OSI model system. For example, at the physical layer (one layer), a data unit may refer to a data Stream (Stream); at the data link layer (layer two), a data unit may refer to a data Frame (Frame); at the network layer (three layers), a data unit may refer to a Packet (Packet); at the transport layer (four layers), a data unit may refer to a data Segment (Segment). The coding of the data units of the layers may have different meanings. For example, the coding mode of the data unit of the physical layer includes Polar code, LDPC code, turbo code, convolutional code, and the like, and steps S50201 to S50204 are described in the data unit of the physical layer.
In step S50202, a coding mode such as Polar code, LDPC code, turbo code, convolutional code, etc. may be set as a candidate coding mode. Polar codes, LDPC codes and other coding modes have different principles, and have different transmission rates, anti-interference capability and other communication performances when the same data unit is transmitted, and meanwhile, different time delays are provided due to different algorithm complexity. For example, in general cases, the time delay generated by Turbo codes is larger than that generated by Polar codes and LDPC codes, but Turbo codes have relatively strong anti-interference performance.
In step S50203, one candidate coding mode among the plurality of candidate coding modes is selected and determined as the target coding mode according to the predicted communication delay information. Specifically, if the predicted communication delay information is larger, the candidate coding mode with smaller delay is selected (for example, polar code or LDPC code is selected), whereas if the predicted communication delay information is smaller, the candidate coding mode with larger delay is selected (for example, turbo code is selected).
In step S50204, the data unit is encoded in the target encoding mode selected in step S50203. Specifically, if the target coding mode selected in step S50203 is the same as the currently used coding mode, the data unit continues to be coded using the currently used coding mode; if the target coding mode selected in step S50203 is different from the currently used coding mode, the method switches to the target coding mode selected in step S50203 to encode the data unit.
By executing steps S50201-S50204, the coding mode with proper time delay can be switched intelligently according to the size of the predicted communication delay information to code the data unit to be transmitted in the PDU conversation, so that the sum of the time delay generated in the process of coding (and correspondingly decoding) the data unit and the time delay generated in the process of transmitting through the inter-satellite link is in a stable level, which is beneficial to maintaining or improving the working stability of the satellite communication system.
The same technical effects as those of the satellite communication session processing method in the embodiment can be achieved by writing a computer program for executing the satellite communication session processing method in the embodiment, writing the computer program into a computer device or a storage medium, and executing the satellite communication session processing method in the embodiment when the computer program is read out and run.
It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Furthermore, the descriptions of up, down, left, right, etc. used in the present disclosure are only relative to the mutual positional relationship of the components of the present disclosure in the drawings. As used in this disclosure, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. In addition, unless defined otherwise, all technical and scientific terms used in this example have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description of the embodiments herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this embodiment, the term "and/or" includes any combination of one or more of the associated listed items.
It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element of the same type from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present disclosure. The use of any and all examples, or exemplary language ("e.g.," such as "or the like") provided with this embodiment is intended merely to better illuminate embodiments of the invention and does not pose a limitation on the scope of the invention unless otherwise claimed.
It should be recognized that embodiments of the present invention can be realized and implemented by computer hardware, a combination of hardware and software, or by computer instructions stored in a non-transitory computer readable memory. The methods may be implemented in a computer program using standard programming techniques, including a non-transitory computer-readable storage medium configured with the computer program, where the storage medium so configured causes a computer to operate in a specific and predefined manner, according to the methods and figures described in the detailed description. Each program may be implemented in a high level procedural or object oriented programming language to communicate with a computer system. However, the program(s) can be implemented in assembly or machine language, if desired. In any case, the language may be a compiled or interpreted language. Furthermore, the program can be run on a programmed application specific integrated circuit for this purpose.
Further, operations of processes described in this embodiment can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The processes described by the present embodiments (or variations and/or combinations thereof) may be performed under the control of one or more computer systems configured with executable instructions and may be implemented as code (e.g., executable instructions, one or more computer programs, or one or more applications) collectively executed on one or more processors, by hardware, or combinations thereof. The computer program includes a plurality of instructions executable by one or more processors.
Further, the method may be implemented in any type of computing platform operatively connected to a suitable connection, including but not limited to a personal computer, mini computer, mainframe, workstation, networked or distributed computing environment, separate or integrated computer platform, or in communication with a charged particle tool or other imaging device, or the like. Aspects of the invention may be embodied in machine-readable code stored on a non-transitory storage medium or device, whether removable or integrated into a computing platform, such as a hard disk, optically read and/or write storage medium, RAM, ROM, or the like, such that it may be read by a programmable computer, which when read by the storage medium or device, is operative to configure and operate the computer to perform the procedures described herein. Further, the machine-readable code, or portions thereof, may be transmitted over a wired or wireless network. The invention described in this embodiment includes these and other different types of non-transitory computer-readable storage media when such media includes instructions or programs that implement the steps described above in conjunction with a microprocessor or other data processor. The invention also includes the computer itself when programmed according to the methods and techniques described herein.
A computer program can be applied to input data to perform the functions described in this embodiment to convert the input data to generate output data that is stored to non-volatile memory. The output information may also be applied to one or more output devices, such as a display. In a preferred embodiment of the invention, the transformed data represents physical and tangible objects, including particular visual depictions of physical and tangible objects produced on a display.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention as long as the technical effects of the present invention are achieved by the same means. The invention is capable of other modifications and variations in its technical solution and/or its implementation, within the scope of protection of the invention.
Claims (10)
1. A satellite communication session processing method, wherein the satellite communication session processing method comprises:
establishing a PDU session;
determining an inter-satellite link corresponding to the PDU session;
acquiring satellite constellation operation information corresponding to the inter-satellite link;
predicting according to the satellite constellation operation information to obtain predicted communication delay information;
and configuring the PDU conversation according to the predicted communication delay information.
2. The method of claim 1, wherein the determining the inter-satellite link corresponding to the PDU session comprises:
determining a source node and a destination node corresponding to the PDU session;
according to the routing of the source node and the destination node, determining a communication satellite passing from the source node to the destination node;
and all communication satellites passing through form the inter-satellite link.
3. The method according to claim 1, wherein the obtaining of the satellite constellation operation information corresponding to the inter-satellite link includes:
determining at least a portion of the communication satellites in the inter-satellite link as target communication satellites;
and acquiring satellite constellation operation information corresponding to all the target communication satellites respectively to form the satellite constellation operation information corresponding to the inter-satellite link.
4. The satellite communication session processing method of claim 3, wherein the determining at least some of the communication satellites in the inter-satellite link as target communication satellites comprises:
acquiring respective service loads of the communication satellites;
and determining a plurality of communication satellites with the highest service load as the target communication satellites.
5. The method of claim 1, wherein the predicting predicted communication delay information according to the satellite constellation operation information comprises:
establishing a long-term and short-term memory network;
inputting the satellite constellation operation information into the long-term and short-term memory network for processing;
and acquiring the predicted communication delay information output by the long-term and short-term memory network.
6. The method of claim 1, wherein the configuring the PDU session according to the predicted communication delay information comprises:
and when the predicted communication delay information is larger than a first threshold value, releasing the PDU conversation.
7. The satellite communication session processing method according to any of claims 1-6, wherein the configuring the PDU session according to the predicted communication delay information comprises:
and when the predicted communication delay information is larger than a second threshold value and smaller than a first threshold value, performing coding compensation on the PDU session.
8. The satellite communication session processing method of claim 7, wherein the encoding compensation of the PDU session comprises:
acquiring a data unit to be transmitted in the PDU session;
determining a plurality of candidate coding modes; the time delay generated by different candidate coding modes is different when the same data is coded;
according to the predicted communication delay information, selecting one candidate coding mode from a plurality of candidate coding modes to determine as a target coding mode; wherein, the time delay corresponding to the selected candidate coding mode is inversely related to the size of the predicted communication delay information;
encoding the data unit in the target encoding mode.
9. A computer arrangement comprising a memory for storing at least one program and a processor for loading the at least one program to perform the satellite communication session handling method of any of claims 1-8.
10. A computer-readable storage medium in which a program executable by a processor is stored, wherein the program executable by the processor is configured to perform the satellite communication session processing method according to any one of claims 1 to 8 when executed by the processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211165815.6A CN115549762B (en) | 2022-09-23 | 2022-09-23 | Satellite communication session processing method, computer device and storage medium |
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| CN102792372A (en) * | 2010-03-02 | 2012-11-21 | 瑞典爱立信有限公司 | Source code adaption based on communication link quality and source coding delay |
| CN107346988A (en) * | 2017-06-20 | 2017-11-14 | 大连大学 | A kind of appearance based on low-track satellite network late/hold circuit network route computing method |
| CN112803988A (en) * | 2021-01-25 | 2021-05-14 | 哈尔滨工程大学 | Hybrid contact graph routing method based on link error rate prediction and suitable for satellite internet scene |
| CN113965965A (en) * | 2020-07-21 | 2022-01-21 | 大唐移动通信设备有限公司 | Quality of service (QoS) control method, equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102792372A (en) * | 2010-03-02 | 2012-11-21 | 瑞典爱立信有限公司 | Source code adaption based on communication link quality and source coding delay |
| CN107346988A (en) * | 2017-06-20 | 2017-11-14 | 大连大学 | A kind of appearance based on low-track satellite network late/hold circuit network route computing method |
| CN113965965A (en) * | 2020-07-21 | 2022-01-21 | 大唐移动通信设备有限公司 | Quality of service (QoS) control method, equipment and storage medium |
| CN112803988A (en) * | 2021-01-25 | 2021-05-14 | 哈尔滨工程大学 | Hybrid contact graph routing method based on link error rate prediction and suitable for satellite internet scene |
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