Satellite terminal connection state transition management method and storage medium

Abstract

The application relates to a satellite terminal connection state conversion management method, characterized in that a satellite has a wideband beam and a narrowband beam, wherein the satellite sends a synchronization event, the satellite terminal receives the synchronization event and is synchronized, and the satellite terminal is switched from an initialization state to an idle state; the satellite terminal sends a registration event, the satellite receives the registration event and feeds back a message to the satellite terminal, and registration is completed; the satellite terminal receives a channel allocation message fed back by the satellite, and the satellite terminal is switched from the idle state to an access state; the satellite terminal initiates a link establishment event with the satellite, and the satellite terminal is switched from the access state to a transmission state. According to the satellite terminal connection state conversion management scheme, the satellite terminal is converted between various states, the satellite terminal is facilitated to be managed, and wideband beam resources and narrowband beam resources are allocated to the satellite terminal.

Description

Technical Field

[0001] This application relates to the field of satellite communication technology, and in particular to a method for managing the switching of satellite terminal connection status and a storage medium. Background Technology

[0002] Satellite communication is a hot research topic recently. Most existing high-orbit satellites use a single beam type, meaning a satellite typically has only one beam, either a narrowband beam or a wideband beam, with a choice between the two. Generally, low-throughput satellites use narrowband beams, while high-throughput satellites use wideband beams. Low-orbit satellites, represented by Starlink, also provide users with a single wideband beam.

[0003] For satellites that simultaneously possess narrowband and broadband beams, referred to as dual-mode satellites, which are already new products, the connection status management of their corresponding satellite terminals is even more worthy of research and discussion. Summary of the Invention

[0004] Based on this, this application provides a method and storage medium for managing the connection status of a satellite terminal, for managing the connection status of a satellite terminal.

[0005] According to the first aspect of this application, a method for managing the switching of connection states of a satellite terminal is provided, wherein the satellite has a broadband beam and a narrowband beam, and the satellite terminal is a dual-mode terminal, wherein...

[0006] The satellite sends a synchronization event, the satellite terminal receives the synchronization event and performs synchronization, and the satellite terminal switches from the initialization state to the idle state.

[0007] The satellite terminal sends a registration event, and the satellite receives the registration event and sends a feedback message back to the satellite terminal to complete the registration.

[0008] The satellite terminal receives the channel allocation message fed back by the satellite, and the satellite terminal switches from idle state to access state;

[0009] The satellite terminal initiates a link establishment event with the satellite, and the satellite terminal switches from the access state to the transmission state.

[0010] According to a second aspect of this application, a non-transitory computer storage medium is provided, storing a computer program that, when executed by one or more processors, causes the processors to perform the method described in the first aspect.

[0011] According to the satellite terminal connection state transition management scheme of this application, the satellite terminal can switch between various states, which facilitates the management of the satellite terminal and the allocation of broadband beam resources and narrowband beam resources for the satellite terminal. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings, without exceeding the scope of protection claimed by this application.

[0013] Figure 1 This is a schematic diagram of a satellite system employing a multi-beam design according to an embodiment of this application.

[0014] Figure 2 This is a schematic diagram illustrating the transitions between various states of a satellite terminal according to an embodiment of this application.

[0015] Figure 3 This is a flowchart of a satellite terminal connection state transition management method according to an embodiment of this application.

[0016] Figure 4 This is a flowchart of an active access event in the satellite terminal connection state transition management method according to an embodiment of this application.

[0017] Figure 5 This is a flowchart of a passive access event in a satellite terminal connection state transition management method according to an embodiment of this application.

[0018] Figure 6 This is a flowchart of the active activation event in the satellite terminal connection state transition management method according to an embodiment of this application.

[0019] Figure 7 This is a flowchart of a passive activation event in a satellite terminal connection state transition management method according to an embodiment of this application.

[0020] Figure 8 This is a flowchart of a broadband beam link establishment event in a satellite terminal connection state transition management method according to an embodiment of this application.

[0021] Figure 9 This is a flowchart of a narrowband beam link establishment event in a satellite terminal connection state transition management method according to an embodiment of this application.

[0022] Figure 10 This is a flowchart of a satellite terminal connection state transition management method according to another embodiment of this application.

[0023] Figure 11 This is a flowchart of the active release event in the satellite terminal connection state transition management method according to an embodiment of this application.

[0024] Figure 12This is a flowchart of a passive release event in a satellite terminal connection state transition management method according to an embodiment of this application. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] The low-Earth orbit communication satellite according to the embodiments of this application simultaneously possesses two types of beams: narrowband beams and wideband beams. The narrowband beam enables baseband communication uplink, as shown in Figure 1. A larger beam angle is typically used for narrowband beams to achieve wider ground-based coverage. The wideband beam uses a ground-based uplink, transparent on-board transmission mode. A smaller beam angle is typically used for wideband beams to achieve a higher signal-to-noise ratio and improve communication quality. For a single satellite, the number, frequency bands, and other parameters of the narrowband and wideband beams are preset. Corresponding to the above-mentioned satellite, the satellite terminal is also a dual-mode terminal.

[0027] like Figure 1 As shown, a narrowband beam of a low-Earth orbit (LEO) communication satellite uses a large beam angle to cover N positions; a wideband beam of a LEO communication satellite uses a smaller beam angle to cover a portion of positions, such as positions 10, 11, 16, 17, 18, 23, and 24.

[0028] Figure 2 This is a schematic diagram illustrating the transitions between various states of a satellite terminal according to an embodiment of this application. For example... Figure 2 As shown in this application, the satellite terminal has six states in its interaction with the satellite system and resource management: initialization, idle, narrowband beam access, narrowband beam transmission, wideband beam access, and wideband beam transmission. Specifically: Initialization state: mainly completes the satellite terminal's selection of the system, with no channel connection; Idle state: the satellite terminal maintains and detects paging messages, completing and maintaining a paging channel monitoring function; Narrowband beam access state: a connection link is established between the satellite terminal and the system, and the system allocates narrowband beam service channel resources to the satellite terminal; Wideband beam access state: a connection link is established between the satellite terminal and the system, and the system allocates wideband beam resources to the satellite terminal; Narrowband beam transmission state: the satellite terminal completes data transmission and interaction through the narrowband beam wireless link allocated by the system; Wideband beam transmission state: the satellite terminal completes data transmission and interaction through the wideband beam wireless link allocated by the system.

[0029] The above describes the various states of a satellite terminal, where transitions between states are triggered by events. An event is the smallest set of signaling interactions; a complete signaling interaction process in radio resource management consists of a series of events. The satellite terminal or system achieves its radio resource management and scheduling goals by triggering a specific event. For example... Figure 2 As shown, after synchronizing with the system, the satellite terminal enters the idle state from the initialization state; after the "access" event, it enters the broadband beam access state; after the "broadband beam link establishment" event, it enters the broadband beam transmission state; and after the "release" event, it enters the idle state. When the satellite terminal is in the idle state, after the "activation" event, it enters the narrowband beam access state; after the "narrowband beam link establishment" event, it enters the narrowband beam transmission state; and after the "release" event, it enters the idle state.

[0030] The following is through Figures 3-12 This application provides a detailed description of the satellite terminal connection status management scheme described above.

[0031] Figure 3 This is a flowchart of a satellite terminal connection state transition management method according to an embodiment of this application. Figure 3 As shown, the method includes steps S301, S302, S303 and S304.

[0032] Step S301: The satellite sends a synchronization event, the satellite terminal receives the synchronization event and performs synchronization, and the satellite terminal switches from the initialization state to the idle state.

[0033] In step S302, the satellite terminal sends a registration event, the satellite receives the registration event and sends a feedback message back to the satellite terminal, thus completing the registration.

[0034] In step S303, the satellite terminal receives the channel allocation message fed back by the satellite, and the satellite terminal switches from idle state to access state.

[0035] In step S304, the satellite terminal initiates a link establishment event with the satellite, and the satellite terminal switches from the access state to the transmission state.

[0036] In step S301, the synchronization event is the first event for the satellite terminal to access the satellite system. It is initiated by a satellite on the satellite system side, which passively receives and completes a series of synchronization procedures, including the event, ephemeris, system status, synchronization channel parameters, system parameters, paging channel parameters, access channel parameters, channel list, and neighboring satellite list. After the synchronization event is completed, the satellite terminal completes acquisition of the satellite system and enters an idle state from the initialization state. During the synchronization event, the satellite's onboard baseband sends a synchronization request message to the satellite terminal. This synchronization request message includes synchronization channel parameters, system parameters, access channel parameters, channel list, and / or neighboring satellite list, causing the satellite terminal to enter an idle state after receiving and processing the synchronization request message.

[0037] In step S302, the registration event is initiated by the satellite terminal. It is the initial action for the satellite terminal to access the satellite system and also a periodic action during idle states. During the registration event, the satellite terminal registers and reports its status. After receiving the registration message, the satellite's onboard baseband module sends an acknowledgment message to the satellite terminal and a location update request to the user management module of the gateway station. The user management module sends a feedback message accepting the location update to the satellite and a registration acceptance message to the satellite terminal, completing the system's acquisition of the satellite terminal. After the registration event is completed, it can be determined that the satellite terminal is already connected to the network.

[0038] In step S303, the access state includes a broadband beam access state and a narrowband beam access state. The satellite terminal enters the broadband beam access state through an access event, and the satellite terminal enters the narrowband beam access state through an activation event.

[0039] Step S303 includes sub-steps S3031 and / or S3032:

[0040] In sub-step S3031, the satellite terminal initiates an access event with the satellite, the satellite terminal receives the first channel allocation message from the satellite, and the satellite allocates broadband beam resources to the satellite terminal.

[0041] In sub-step S3032, the satellite terminal initiates an activation event with the satellite, the satellite terminal receives the second channel allocation message from the satellite, and the satellite allocates narrowband beam resources to the satellite terminal.

[0042] In sub-step S3031, the access events include "active access events" and "passive access events." An active access event is initiated by the satellite terminal, requesting the establishment of a broadband beam resource connection. An active access event begins when the satellite terminal sends a start message and ends when the satellite terminal receives a channel allocation message from the system. After receiving the start message from the satellite terminal, the satellite's onboard baseband module sends an acknowledgment message and a connection management service request to the system's user management module. The user management module sends an allocation request to the onboard baseband module, which then sends a channel allocation message to the satellite terminal and an allocation completion message to the user management module. The active access event also triggers two events: beam update and beam report. After the active access event is completed, the satellite terminal will obtain the broadband beam radio resources allocated by the system.

[0043] Figure 4 This is a flowchart of an active access event in the satellite terminal connection state transition management method according to an embodiment of this application. Figure 4 As shown, sub-step S3031 may include steps S401 and S402.

[0044] Step S401: The satellite terminal sends a first initiation message to request the establishment of a broadband beam connection;

[0045] Step S402: The satellite sends a first channel allocation message to the satellite terminal to complete the access event.

[0046] A passive access event is an action initiated by the system side, in which the system allocates broadband beam resources to a satellite terminal. The passive access event begins with the onboard baseband module receiving a paging request from the user management module and sends a paging message, ending when the satellite terminal receives a channel allocation message from the system. Upon receiving the paging message, the satellite terminal sends a paging response message to the onboard baseband module, which in turn sends a paging response to the user management module. The user management module then sends an allocation request to the onboard baseband module, which in turn sends a channel allocation message to the satellite terminal. The passive access event also triggers beam update and beam report events. After the passive access event is completed, the satellite terminal will obtain the broadband beam radio resources allocated by the system.

[0047] Figure 5 This is a flowchart of a passive access event in a satellite terminal connection state transition management method according to an embodiment of this application. Figure 5 As shown, sub-step S3031 may include steps S501, S502 and S503.

[0048] Step S501: The satellite sends a first paging message to the satellite terminal;

[0049] Step S502: The satellite terminal sends the first paging response message;

[0050] In step S503, the satellite terminal receives the first channel allocation message fed back by the satellite, thus completing the access event.

[0051] After sub-step S3031 where the satellite allocates broadband beam resources to the satellite terminal, the satellite sends a beam update or beam report to the gateway station.

[0052] In sub-step S3032, the activation events include "active activation events" and "passive activation events." An active activation event is initiated by the satellite terminal, requesting the establishment of a narrowband beam resource connection. The active activation event begins when the satellite terminal sends a start message and ends when the satellite terminal receives a channel allocation message from the system. After receiving the start message from the satellite terminal, the satellite's onboard baseband module sends an acknowledgment message and a connection management service request to the system's user management module. The user management module sends an allocation request to the onboard baseband module, which then sends a channel allocation message to the satellite terminal and an allocation completion message to the user management module. The active activation event also triggers two other events: channel establishment and service connection. After the active activation event is completed, the satellite terminal will obtain the radio resources of the narrowband beam service channel allocated by the system.

[0053] Figure 6 This is a flowchart of the active activation event in the satellite terminal connection state transition management method according to an embodiment of this application. For example... Figure 6 As shown, sub-step S3032 may include steps S601 and S602.

[0054] Step S601: The satellite terminal sends a second initiation message to request the establishment of a narrowband beam connection;

[0055] Step S602: The satellite sends a second channel allocation message to the satellite terminal to complete the activation event.

[0056] A passive activation event is an action initiated by the system side, where the system allocates broadband beam resources to a satellite terminal. The passive activation event begins with the onboard baseband module receiving a paging request from the user management module and sends a paging message, ending when the satellite terminal receives a channel allocation message from the system. Upon receiving the paging message, the satellite terminal sends a paging response message to the onboard baseband module, which in turn sends a paging response to the user management module. The user management module then sends an allocation request to the onboard baseband module, which in turn sends a channel allocation message to the satellite terminal. The passive activation event also triggers two other events: channel establishment and service connection. After the passive activation event is completed, the satellite terminal will obtain the radio resources of the narrowband beam service channel allocated by the system.

[0057] Figure 7 This is a flowchart of a passive activation event in a satellite terminal connection state transition management method according to an embodiment of this application. For example... Figure 7 As shown, sub-step S3032 may include steps S701, S702 and S703.

[0058] Step S701: The satellite sends a second paging message to the satellite terminal;

[0059] Step S702: The satellite terminal sends a second paging response message;

[0060] In step S703, the satellite terminal receives the second channel allocation message fed back by the satellite, thus completing the activation event.

[0061] In step S304, the broadband beam link establishment event occurs after the active and passive access events. After receiving the channel configuration message, the satellite terminal obtains the system parameters for the allocated broadband beam. The event begins when the satellite terminal sends a preamble; upon receiving the preamble, the onboard baseband module on the system side sends a feedback message to the satellite terminal. After receiving the system feedback, the satellite terminal retransmits the feedback to the system side, and the event ends. After the broadband beam link establishment event ends, the satellite terminal can freely transmit and receive data via the broadband beam.

[0062] Figure 8 This is a flowchart of a broadband beam link establishment event in a satellite terminal connection state transition management method according to an embodiment of this application. Figure 8 As shown, step S304 includes steps S801, S802 and S803.

[0063] Step S801: The satellite terminal sends the first preamble to the satellite;

[0064] Step S802: The satellite sends the first feedback information to the satellite terminal;

[0065] In step S803, the satellite terminal sends the first return information to the satellite to complete the broadband beam link establishment.

[0066] In step S304, the narrowband beam link establishment event occurs after the active and passive activation events. After receiving the channel configuration message, the satellite terminal obtains the system parameters of the allocated narrowband beam service channel. The event begins when the satellite terminal sends a preamble; upon receiving the preamble, the onboard baseband module on the system side sends a feedback message to the satellite terminal; and after receiving the system feedback, the satellite terminal resends the feedback to the system side. The event ends. After the narrowband beam link establishment event ends, the satellite terminal can obtain the narrowband beam service channel resources.

[0067] Figure 9 This is a flowchart of the narrowband beam link establishment event in the satellite terminal connection state transition management method according to an embodiment of this application. Figure 9 As shown, step S304 includes steps S901, S902 and S903.

[0068] Step S901: The satellite terminal sends the second preamble to the satellite;

[0069] Step S902: The satellite sends the second feedback information to the satellite terminal;

[0070] In step S903, the satellite terminal sends the second return information to the satellite to complete the narrowband beam link establishment.

[0071] After completing the narrowband beam link establishment in step S903, the satellite terminal obtains the service connection event sent by the satellite through the narrowband beam.

[0072] Specifically, the satellite terminal obtains service connection messages from the on-board baseband module on the system side through the service channel, and obtains data transmission parameters and interface information of the user plane, which facilitates the satellite terminal to use service channel resources to transmit data.

[0073] Figure 10 This is a flowchart of a satellite terminal connection state transition management method according to another embodiment of this application. Figure 10 As shown, the method includes steps S1001, S1002, S1003, S1004, and S1005, wherein steps S1001 to S1004 are related to... Figure 3 Steps S301 to S304 are the same and will not be repeated here.

[0074] In step S1005, the satellite terminal initiates a release event with the satellite, and the satellite terminal enters an idle state.

[0075] Release events include "active release events" and "passive release events." Active release events are initiated by the satellite terminal, representing the release of narrowband beam service channel resources. The satellite terminal actively sends a resource release request to the onboard baseband module on the system side. Upon receiving the resource release request, the onboard baseband module sends a resource release confirmation message to the satellite terminal and a release completion message to the user management module on the system side. The satellite terminal then ceases to use the narrowband beam service channel resources.

[0076] Figure 11 This is a flowchart of the active release event in the satellite terminal connection state transition management method according to an embodiment of this application. Figure 11 As shown, step S1005 includes steps S1101 and S1102.

[0077] Step S1101: The satellite terminal sends a first release request to the satellite;

[0078] In step S1102, the satellite terminal receives the first release feedback from the satellite, and the satellite and the satellite terminal release beam resources to complete the release event.

[0079] A passive release event is initiated by the onboard system, requiring the satellite terminal to release the narrowband beam's transmission channel resources. The onboard baseband module on the system side sends a resource release request to the satellite terminal. Upon receiving the request, the satellite terminal sends a resource release confirmation message to the onboard baseband module, which then sends a release completion message to the user management module on the system side. The satellite terminal then ceases to use the narrowband beam's service channel resources.

[0080] Figure 12 This is a flowchart of a passive release event in a satellite terminal connection state transition management method according to an embodiment of this application. Figure 12 As shown, step S1005 includes steps S1201 and S1202.

[0081] Step S1201: The satellite sends a second release request to the satellite terminal;

[0082] In step S1202, the satellite terminal accepts the second release request, and the satellite and the satellite terminal release beam resources to complete the release event.

[0083] This application embodiment also provides a non-transitory computer storage medium storing a computer program, which, when executed by multiple processors, causes the processors to perform actions such as... Figures 3 to 12 The method and its detailed scheme are shown.

[0084] According to the satellite terminal connection state transition management scheme of this application, the satellite terminal can switch between various states, which facilitates the management of the satellite terminal and the allocation of broadband beam resources and narrowband beam resources for the satellite terminal.

[0085] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. Furthermore, any changes or modifications made by those skilled in the art based on the ideas of this application, and on the specific implementation methods and application scope of this application, are all within the scope of protection of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for managing the transition of satellite terminal connection status, characterized in that, The satellite has both broadband and narrowband beams, and the satellite terminal is a dual-mode terminal. The satellite sends a synchronization event, the satellite terminal receives the synchronization event and performs synchronization, and the satellite terminal switches from the initialization state to the idle state. The satellite terminal sends a registration event, and the satellite receives the registration event and sends a feedback message back to the satellite terminal to complete the registration. The satellite terminal initiates an access event with the satellite, the satellite terminal receives a first channel allocation message from the satellite, the satellite allocates broadband beam resources to the satellite terminal, and the satellite terminal switches from an idle state to a broadband access state, thereby establishing a connection link between the system and the satellite terminal and allocating broadband beam resources to the satellite terminal. The satellite terminal sends a first preamble to the satellite; The satellite sends a first feedback message to the satellite terminal; The satellite terminal sends the first return information to the satellite to complete the broadband beam link establishment. The satellite terminal switches from broadband access state to broadband transmission state so that the satellite terminal can complete data transmission and interaction through the allocated broadband beam wireless link. The satellite terminal initiates an activation event with the satellite, the satellite terminal receives a second channel allocation message from the satellite, the satellite allocates narrowband beam resources to the satellite terminal, the satellite terminal switches from idle state to narrowband access state, thereby establishing a connection link between the system and the satellite terminal and allocating narrowband beam resources to the satellite terminal; The satellite terminal sends a second preamble to the satellite; The satellite sends a second feedback message to the satellite terminal; The satellite terminal sends a second return message to the satellite to complete the narrowband beam link establishment. The satellite terminal switches from narrowband access mode to narrowband transmission mode so that the satellite terminal can complete data transmission and interaction through the allocated narrowband beam wireless link.

2. The satellite terminal connection status conversion management method as described in claim 1, characterized in that, The satellite terminal initiates an access event with the satellite, and the satellite terminal receives a first channel allocation message from the satellite, including: The satellite terminal sends a first initiation message requesting the establishment of a broadband beam connection; The satellite sends the first channel allocation message back to the satellite terminal, completing the access event; and / or The satellite sends a first paging message to the satellite terminal; The satellite terminal sends a first paging response message; The satellite terminal receives the first channel allocation message from the satellite and completes the access event.

3. The satellite terminal connection state transition management method as described in claim 1, characterized in that, The satellite terminal initiates an access event with the satellite, the satellite terminal receives a first channel allocation message from the satellite, and after the satellite allocates broadband beam resources to the satellite terminal, the following steps are taken: The satellite sends beam updates or beam reports to the gateway station.

4. The satellite terminal connection state transition management method as described in claim 1, characterized in that, The satellite terminal initiates an activation event with the satellite, and the satellite terminal receives a second channel allocation message from the satellite, including: The satellite terminal sends a second initiation message to request the establishment of a narrowband beam connection; The satellite sends the second channel allocation message back to the satellite terminal, completing the activation event; and / or The satellite sends a second paging message to the satellite terminal; The satellite terminal sends a second paging response message; The satellite terminal receives the second channel allocation message from the satellite and completes the activation event.

5. The satellite terminal connection status conversion management method as described in claim 1, characterized in that, After the satellite terminal sends a second return message to the satellite and completes the narrowband beam link establishment, the following steps are included: The satellite terminal obtains the service connection event sent by the satellite through the narrowband beam.

6. The satellite terminal connection state transition management method as described in claim 1, characterized in that, Also includes: The satellite terminal initiates a release event with the satellite, and the satellite terminal enters an idle state.

7. The satellite terminal connection state transition management method as described in claim 6, characterized in that, The release event initiated by the satellite terminal and the satellite includes: The satellite terminal sends a first release request to the satellite; The satellite terminal receives the first release feedback from the satellite, and the satellite and the satellite terminal release beam resources to complete the release event; and / or The satellite sends a second release request to the satellite terminal; The satellite terminal accepts the second release request, and the satellite and the satellite terminal release beam resources to complete the release event.

8. A non-transitory computer storage medium storing a computer program that, when executed by one or more processors, causes the processors to perform the method according to any one of claims 1-7.

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