WO2024103743A1 - Structure d'adresses de réseau, satellite et procédé et appareil de traitement de paquets pour satellite - Google Patents

Structure d'adresses de réseau, satellite et procédé et appareil de traitement de paquets pour satellite Download PDF

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Publication number
WO2024103743A1
WO2024103743A1 PCT/CN2023/103355 CN2023103355W WO2024103743A1 WO 2024103743 A1 WO2024103743 A1 WO 2024103743A1 CN 2023103355 W CN2023103355 W CN 2023103355W WO 2024103743 A1 WO2024103743 A1 WO 2024103743A1
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WO
WIPO (PCT)
Prior art keywords
satellite
traffic
message
strategy
present application
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Application number
PCT/CN2023/103355
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English (en)
Chinese (zh)
Inventor
吴道揆
吴海生
张超峰
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中兴通讯股份有限公司
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Publication of WO2024103743A1 publication Critical patent/WO2024103743A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0894—Policy-based network configuration management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/80—Actions related to the user profile or the type of traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/25—Routing or path finding in a switch fabric

Definitions

  • the present application relates to the field of network communication technology, and in particular to a network address structure, a satellite and a method for generating a traffic strategy thereof, a message processing method, a device and a computer storage medium.
  • Satellite communication technology has made great progress in recent decades.
  • the function of satellites is mainly to serve as signal relays and provide curved-pipe signal forwarding.
  • the ability of networking and storage-forwarding is relatively lacking.
  • a series of technical challenges need to be solved at the physical layer, data link layer, network layer and transport layer.
  • the unified network layer design is the key to achieving efficient multi-network integration and interconnection. This is not only because the unified network layer can avoid the complexity and overhead brought by protocol conversion or translation, but also because the network layer with IP technology as the core is the "thin waist" of the Internet hourglass model, which plays a role in shielding the link differences of the upper layer.
  • the present application provides a network address structure, a satellite and its traffic strategy generation method, a message processing method, a device and a computer storage medium, which aim to solve the DDoS problem during traffic forwarding on the satellite and fill the technical gap in traffic forwarding on the satellite.
  • the present application provides a network address structure, including a traffic matching item and an action rule item;
  • the traffic matching item includes at least one identifier for indicating satellite-related information.
  • the present application provides a method for generating a traffic strategy for a satellite, comprising: analyzing the traffic on the satellite; generating a traffic strategy based on the analysis results, wherein the traffic strategy includes the configuration of traffic matching items and action rule items, so as to process received messages according to the traffic matching items and action rule items.
  • the present application provides a satellite message processing method, including: receiving messages sent from other satellites; parsing the messages to obtain information related to the satellite sending the messages; comparing the obtained satellite-related information of the sent messages with the local traffic policy; processing the messages that comply with the traffic policy according to the action rule items in the traffic policy; wherein the traffic policy is generated by the method of any of the above embodiments.
  • the present application provides a traffic strategy generating device for a satellite, comprising: a traffic analysis module, configured to analyze the traffic on the satellite; a message configuration module, configured to configure traffic matching items and action rule items according to the analysis results, and generate a traffic strategy to process the received messages according to the traffic matching items and action rule items.
  • the present application provides a satellite message processing device, comprising: a message receiving module, configured to receive messages sent from other satellites; a message parsing module, configured to parse the message and obtain information related to the satellite sending the message; a traffic strategy comparison module, configured to compare the obtained satellite-related information of the sent message with the local traffic policy; and a message processing module, configured to process messages that comply with the traffic policy according to the action rule items in the traffic policy.
  • the present application provides a satellite, including a processor and a memory, wherein the memory stores a program for generating a traffic strategy and a program for processing messages, and the program is called by the processor to execute the method of any of the above embodiments.
  • the present application provides a computer storage medium storing a program for generating a traffic policy and a computer processing program for processing messages, the program being called by the processor to execute the method of any of the above embodiments.
  • the satellite By adding at least one coding content for indicating satellite-related information to the network address, the satellite can be quickly located when traffic is forwarded between satellites.
  • the traffic strategy is dynamically generated according to the specific situation. For the space network, it can better adapt to the characteristics of the space network and the routing of multi-network fusion goals.
  • FIG1 is a schematic diagram of a network address structure for implementing an embodiment of the present application.
  • FIG2 is a schematic diagram of a network address structure for implementing another embodiment of the present application.
  • FIG3 is a flow chart of a method for generating a traffic strategy according to an embodiment of the present application
  • FIG4 is a schematic diagram of the format of an action rule item according to an embodiment of the present application.
  • FIG5 is a schematic diagram of the format of an action rule item according to another embodiment of the present application.
  • FIG6 is a flow chart of a message processing method according to an embodiment of the present application.
  • FIG7 is a schematic diagram of the system structure of an application example of the first technical solution of the present application.
  • FIG8 is a schematic diagram of a system structure of another application example of the technical solution of the present application.
  • FIG9 is a schematic diagram of the system structure of another application example of the technical solution of the present application.
  • first, second, third, etc. may be used to describe various information in this article, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.
  • first information may also be referred to as the second information
  • second information may also be referred to as the first information.
  • word “if” as used herein can be interpreted as “at the time of -- or "when" or "in response to determination”.
  • singular forms “one”, “one” and “the” are intended to also include plural forms, unless there is an opposite indication in the context.
  • “comprising at least one of the following: A, B, C” means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”, and for another example, “A, B or C” or “A, B and/or C” means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”.
  • An exception to this definition will only occur when a combination of elements, functions, steps or operations are inherently mutually exclusive in some manner.
  • the words “if” and “if” may be interpreted as “at the time of” or “when” or “in response to determining” or “in response to detecting”, depending on the context.
  • the phrases “if it is determined” or “if (stated condition or event) is detected” may be interpreted as “when it is determined” or “in response to determining” or “when detecting (stated condition or event)” or “in response to detecting (stated condition or event)", depending on the context.
  • step codes such as S10 and S20 are used for the purpose of expressing the corresponding content more clearly and concisely, and do not constitute a substantial limitation on the sequence.
  • S20 When implementing the step, those skilled in the art may execute S20 first and then S10, etc., but these should all be within the scope of protection of this application.
  • module means, “component” or “unit” used to represent elements are only used to facilitate the description of the present application, and have no specific meanings. Therefore, “module”, “component” or “unit” can be used in a mixed manner.
  • Satellite communication technology has made great progress in recent decades.
  • the current function of satellites is mainly to serve as signal relays, providing curved-pipe signal forwarding, and lacking networking and storage-forwarding capabilities.
  • some people have proposed to apply Internet technology to satellite networks.
  • the existing Internet addressing and routing technology cannot be directly applied to space networks, mainly because of the characteristics of space networks in terms of stability and reliability, such as frequent topology changes, large fluctuations in link bandwidth and bit error rate, etc. Therefore, in order to propose a routing solution suitable for the characteristics of space networks and the goal of multi-network integration based on the existing Internet technology, the first problem to be solved is the compilation of satellite nodes, that is, how to identify and locate nodes in the network.
  • the current solutions include the following two:
  • Satellite-based logical location addressing (1) Satellite-based logical location addressing:
  • the satellite is addressed based on the satellite number or the orbit in which it is located and its position in the orbit, as shown in the following table.
  • the satellite's identification will remain constant.
  • the advantage of this solution is that the control plane is simpler and more stable, and the ground station can easily access the target satellite without knowing its current coordinates.
  • the user may need to change the address as the satellite they access changes, which is not a good user experience.
  • the IP address is bound to a predefined area instead of a router/interface.
  • the satellite moves to the area, it has the IP address of the area.
  • the advantage of this solution is that users accessing via satellite can automatically obtain an IP access address based on their geographical location and the routing prefix. Even if the satellite to which the user accesses changes, the user does not need to change the address. However, the satellite node needs to frequently and dynamically update the address and route.
  • routing table entries are required to further subdivide data flows, and the processing actions for data flows include not only forwarding from a certain interface, but also speed limiting, discarding, redirecting and other actions.
  • IETF proposed to use the BGP Flowspec protocol on network forwarding devices, and to convert the BGP Flowspec protocol into a control strategy after sending it to network devices through Flowspec routing, which ultimately affects the routing results in the network and realizes the adjustment and optimization of traffic paths.
  • BGP Flowspec defines a set of unified traffic matching/action rule items.
  • the embodiment of the present application proposes a new network addressing method based on BGP Flowspec technology and satellite logical address addressing method, improves the content of IPV4 and IPV6 addresses, and obtains a new network address.
  • Figure 1 is the address structure of satellite IPv4 in an embodiment of the present application
  • Figure 2 is the address structure of satellite IPv6 in an embodiment of the present application.
  • the network address structure includes a flow matching item and an action rule item, and the flow matching item includes at least one identifier for indicating satellite related information.
  • the satellite-related information includes: one or more of: the satellite's owner, its orbital plane, its position in the orbital plane, and its latitude and longitude information during operation.
  • a coding type is added to the original traffic matching item to identify satellite related information. Specifically:
  • Type 13, used to match the company attribute in the IPv4 or IPv6 address, indicating which country or company the satellite belongs to;
  • Type 14, used to match the orbit attribute in the IPv4 or IPv6 address, indicating which orbital plane the satellite belongs to (currently there are inclined orbit and polar orbit modes, and the orbital plane represents the number of the orbital plane);
  • Type 15, used to match the sequence attribute in the IPv4 or IPv6 address, indicating the satellite number in the orbital plane to which the satellite belongs;
  • the embodiment of the present application adds at least one coded content for representing satellite-related information to the network address, so that the satellite can be quickly located when traffic is forwarded between satellites, and the corresponding processing of the message data sent by the satellite can be achieved.
  • Figure 3 is a flow chart of a method for generating a traffic strategy for a satellite according to an embodiment of the present application.
  • the method for generating a traffic strategy includes:
  • the satellite After receiving the traffic message, the satellite stores the received traffic message and the message processing status. Therefore, the traffic information collected over a period of time can be statistically analyzed, such as the type of message, message processing and processing results, etc. Then, based on the analysis results, a traffic policy including configuration information of traffic matching items and action rule items is generated, so that the satellite can process the received message accordingly based on the process policy.
  • the content of the traffic matching item configured in the above traffic policy refers to the previous implementation. That is, the traffic matching item includes at least one identifier for indicating satellite-related information, wherein the satellite-related information includes: one or more of the satellite's owner, the orbital plane, the position in the orbital plane, and the longitude and latitude information during operation.
  • the action rule item includes an action instruction to redirect and forward the message received by the satellite.
  • a coding type is added to the original action rule item to indicate the message processing method.
  • the action indication includes: redirecting the received message to a specified latitude and longitude area; or redirecting the received message to a satellite with a specified owner, orbital plane or satellite serial number.
  • LA 1 bit, representing whether it is longitude; if it is 1, it represents longitude; if it is 0, it represents latitude;
  • Attribute 4 bytes, representing longitude or latitude information
  • F 2 bits, representing the meaning of the following Value; for example, if it is 00, it represents the country; if it is 01, it represents the orbital plane; if it is 10, it represents the serial number;
  • the embodiment of the present application adds coded content indicating the processing method of the message received by the satellite to the network address, so that the satellite can be accurately processed when traffic is forwarded between satellites.
  • the satellite when the satellite is processing traffic, it can generate a corresponding traffic strategy according to the specific traffic situation, so that after receiving the message, the satellite can process the received message based on the traffic strategy.
  • the above method further comprises:
  • the satellite collects message traffic and sends the collected message traffic to high-orbit satellites or ground stations, which analyze the traffic and return the analysis results.
  • the analysis burden of the satellite can be reduced, and the processing efficiency can be improved through centralized analysis and processing of traffic messages. For example, if the analysis of traffic messages determines that messages in certain areas will cause congestion during satellite processing, traffic strategies can be generated synchronously on multiple satellites based on the analysis results.
  • the embodiment of the present application analyzes the message flow received on the satellite and generates a corresponding traffic strategy based on the analysis result.
  • the traffic strategy is dynamically generated according to the specific situation. For the space network, it can better adapt to the characteristics of the space network and the routing of the multi-network fusion target.
  • the message processing according to the traffic strategy can well solve the DDoS problem when forwarding traffic on the satellite, thereby filling the technical gap in forwarding traffic on the satellite.
  • the embodiment of the present application proposes a satellite message processing method.
  • the message processing method of the embodiment of the present application includes:
  • the message received by the satellite includes a network address, i.e., an IPV4 or IPV6 address.
  • the satellite-related information that sent the message can be obtained, such as which country or company the satellite belongs to, which orbital plane the satellite belongs to, which satellite number in the orbital plane the satellite belongs to, the longitude and latitude of the satellite when it is running, and the message processing method, such as discarding, redirecting to a certain longitude and latitude area, redirecting to a certain company/a certain orbital plane/a certain serial number of satellite, etc.
  • the parsed satellite-related information is compared with the local traffic policy, so that the message that meets the traffic policy is processed accordingly according to the action rule items in the traffic policy.
  • the embodiment of the present application forwards the received messages according to the dynamically generated traffic strategy, which can effectively solve the DDoS problem when forwarding traffic on the satellite, thereby filling the technical gap in forwarding traffic on the satellite.
  • satellite C finds that the traffic messages of certain companies/countries occupy too much traffic, which not only affects the traffic of other messages, but also increases the load of the satellite. Therefore, a corresponding BGP-Flowspe traffic policy is generated on satellite C, specifically, the messages sent by companies/countries with company attributes between 1-10 are processed within a speed limit of 10M. Based on the above traffic policy, the steps of message forwarding processing are as follows:
  • the message data starts from satellite router B and is sent to the destination user via IPv4 message;
  • Satellite C performs a rate limit on messages, allowing only messages with an upper limit of 10M to pass;
  • the embodiments of the present application can achieve the discarding of traffic packets in certain areas.
  • satellite C finds that messages from certain areas will cause congestion when the satellite is processing, or that messages from the area may be attack messages, so a corresponding BGP-Flowspe traffic policy is generated on satellite C, that is, messages from the specified area are directly discarded after being received.
  • the steps of message forwarding processing are as follows:
  • the message data starts from satellite router B and is sent to the destination user via IPv6 message;
  • Satellite C discards the message and does not forward it.
  • the message data starts from satellite router B and is sent to the destination user via IPv6 message;
  • satellite C After receiving the message, satellite C first parses the orbit field in the destination IPv6 message and finds that it is 15. After comparing it with the local BGP-Flowspec policy table, it finds that it meets the match condition, indicating that the message is sent to orbital plane 15 and needs to be redirected to the orbital plane.
  • Satellite C redirects the message and sends it to satellite A on orbital plane 16 instead of the original satellite F on orbital plane.
  • the present application also provides a traffic strategy generating device, comprising:
  • a traffic analysis module configured to analyze traffic on the satellite
  • the message configuration module is configured to configure flow matching items and action rule items according to the analysis results, and generate a flow policy to process the received message according to the flow matching items and action rule items.
  • the present application also provides a message processing device, comprising:
  • a message receiving module configured to receive messages sent by other satellites
  • a message parsing module configured to parse the message and obtain information related to the satellite that sent the message
  • a traffic strategy comparison module is configured to compare the obtained satellite-related information of the sent message with the local traffic strategy
  • the message processing module is configured to process messages that comply with the traffic policy according to the action rule items in the traffic policy.
  • An embodiment of the present application also provides a satellite, which includes a memory and a processor.
  • the memory stores a processing program, and when the processing program is executed by the processor, the steps of the traffic strategy generation method and the message processing method in any of the above embodiments are implemented.
  • the present application also provides a computer-readable storage medium, on which a processing program is stored.
  • a processing program is stored.
  • the steps of the processing method in any of the above embodiments are implemented.
  • An embodiment of the present application further provides a computer program product, which includes a computer program code.
  • the computer program code runs on a computer, the computer executes the methods in the above various possible implementation modes.
  • the units in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.
  • the technical solution of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) as above, and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, a controlled terminal, or a network device, etc.) to execute the method of each embodiment of the present application.
  • a storage medium such as ROM/RAM, magnetic disk, optical disk
  • a terminal device which can be a mobile phone, a computer, a server, a controlled terminal, or a network device, etc.
  • Computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means.
  • Computer-readable storage media may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated therein. Available media may be magnetic media (e.g., floppy disks, storage disks, tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state storage disks (SSDs)).

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

La présente invention concerne une structure d'adresses de réseau, comprenant un élément de correspondance de trafic et un élément de règle d'action, l'élément de correspondance de trafic comprenant au moins un identificateur utilisé pour représenter des informations associées d'un satellite. La présente invention concerne en outre un procédé de génération de politique de trafic, un procédé de traitement de paquets, un appareil de génération de politique de trafic et un appareil de traitement de paquets pour un satellite, un satellite et un support d'enregistrement informatique.
PCT/CN2023/103355 2022-11-15 2023-06-28 Structure d'adresses de réseau, satellite et procédé et appareil de traitement de paquets pour satellite WO2024103743A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211430537.2 2022-11-15
CN202211430537.2A CN118101592A (zh) 2022-11-15 2022-11-15 网络地址结构、卫星及其报文处理方法、装置

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Citations (3)

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Publication number Priority date Publication date Assignee Title
CN107248959A (zh) * 2017-06-30 2017-10-13 联想(北京)有限公司 一种流量优化方法及装置
CN113347282A (zh) * 2021-05-25 2021-09-03 清华大学 一种用于卫星互联网的ip地址分配与查重方法及系统
CN113507722A (zh) * 2021-07-05 2021-10-15 北京邮电大学 一种基于ns3的用于低轨卫星控制拥塞的平台的实现方法

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Publication number Priority date Publication date Assignee Title
CN107248959A (zh) * 2017-06-30 2017-10-13 联想(北京)有限公司 一种流量优化方法及装置
CN113347282A (zh) * 2021-05-25 2021-09-03 清华大学 一种用于卫星互联网的ip地址分配与查重方法及系统
CN113507722A (zh) * 2021-07-05 2021-10-15 北京邮电大学 一种基于ns3的用于低轨卫星控制拥塞的平台的实现方法

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