Communication method, apparatus, terminal, network device, and communication system

Abstract

The application provides a communication method, device, terminal, network device and communication system. The method comprises: receiving system information from a network device; determining whether the terminal is allowed to access the network device for maritime business according to whether the system information comprises first information, the first information being used to indicate whether the network device allows access for maritime business. The application can reduce the time delay of the terminal accessing the network device for maritime business.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a communication method, apparatus, terminal, network equipment and communication system. Background Technology

[0002] In marine communications, there are various maritime service requirements, such as distress alert / call requirements, shore-to-ship distress relay alert / call requirements, ship-to-shore, shore-to-ship and ship-to-ship search and rescue coordination communication requirements, ship-to-shore transmission of maritime safety information, shore-to-ship broadcasting of maritime safety information, ship-to-shore, shore-to-ship and ship-to-ship general communication requirements, bridge-to-bridge communication requirements, etc. Terminals realize maritime services by accessing network equipment that is allowed to be used for maritime service access. Summary of the Invention

[0003] This application provides a communication method, apparatus, terminal, network equipment, and communication system that can reduce the latency of a terminal accessing a network device for maritime business.

[0004] In a first aspect, a communication method is proposed for a terminal that supports non-terrestrial network (NTN) connections and has maritime capabilities. The method includes: receiving system information from a network device; determining whether the terminal is allowed to access the network device for maritime services based on whether the system information includes first information, wherein the first information is used to indicate whether the network device allows access for maritime services.

[0005] This application determines whether a network device allows a maritime service connection by checking whether the system information sent by the network device includes the first information. In this way, the terminal can quickly determine whether the network device allows a maritime service connection without having to try to initiate a request for maritime service access to more network devices, thus reducing access latency.

[0006] In some embodiments, determining whether the terminal is permitted to be used for maritime business access network equipment based on whether the system information includes first information includes:

[0007] Based on whether the system information includes first information and / or second information, it is determined whether the terminal is allowed to be used for maritime business access network equipment, wherein the second information is used to indicate whether the network equipment allows NTN access.

[0008] This application determines whether a terminal is allowed to access the network device for maritime services by using second information indicating whether the network device allows access for NTN and first information indicating whether the network device allows access for maritime services.

[0009] In some embodiments, determining whether the terminal is permitted to access the network device for maritime business purposes based on whether the system information includes first information and / or second information includes:

[0010] If the system information does not include the first information or does not include the second information, it is determined that the terminal is not allowed to use the network device for maritime business access.

[0011] If the system information includes the first information and the second information, the system determines, based on the first information, whether the terminal is permitted to access the network device for maritime business; or,

[0012] If the system information includes the first information and the second information, it is determined whether the terminal is allowed to access the network device for maritime business based on the first information and the second information.

[0013] This application proposes a method to determine whether a terminal is allowed to access the network device for maritime business based on the second information and the first information. If either the first or the second information is not included in the system information, it means that the terminal is not allowed to access the network device for maritime business. If the system information includes the first and the second information, two methods are proposed to determine whether the terminal is allowed to access the network device for maritime business. Thus, when the terminal receives the system information, it can directly determine whether it is allowed to access the network device for maritime business. When it is determined that the terminal is allowed to access the network device for maritime business, it can directly access the network device for maritime business without attempting to initiate access requests to more network devices, thereby reducing access latency.

[0014] In some embodiments, the first information is information used to indicate whether a first network allows access for maritime services, and the first network includes at least one of the following: a network selected by the terminal, a network registered by the terminal, and a network equivalent to the network registered by the terminal.

[0015] This application proposes that the first information be used to indicate whether the first network allows access for maritime services, and proposes that the first network is a network that the terminal can use. If the first information is used to indicate that the first network allows access for maritime services, then the network device is instructed to allow the terminal to access for maritime services. If the first information is used to indicate that the first network does not allow access for maritime services, then the network device is instructed not to allow the terminal to access for maritime services.

[0016] In some embodiments, the network includes at least one of a public land mobile network (PLMN) and a non-public network (NPN).

[0017] In some embodiments, determining whether the terminal is permitted to access the network device for maritime business based on the first information includes:

[0018] If the value corresponding to the first information is a first preset value, then it is determined that the terminal is not allowed to access the network device for maritime business. When the value corresponding to the first information is the first preset value, it is used to indicate that the network device is not allowed to access for maritime business.

[0019] If the value corresponding to the first information is the second preset value, then it is determined that the terminal is allowed to access the network device for maritime business. When the value corresponding to the first information is the second preset value, it is used to indicate that the network device allows access for maritime business.

[0020] In this application, different values ​​are set for the first information. The first information is used to indicate whether the network device allows access for maritime business through different values. Thus, the terminal can determine whether the network device allows access for maritime business through the first information.

[0021] In some embodiments, determining whether the terminal is permitted to access the network device for maritime business based on the first information and the second information includes:

[0022] If the value corresponding to the first information is a first preset value or the value corresponding to the second information is a third preset value, then it is determined that the terminal is not allowed to access the network device for maritime business. When the value corresponding to the first information is the first preset value, it is used to indicate that the network device does not allow access for maritime business. When the value corresponding to the second information is the third preset value, it is used to indicate that the network device does not allow NTN access.

[0023] If the value corresponding to the first information is the second preset value and the value corresponding to the second information is the fourth preset value, then it is determined that the terminal is allowed to access the network device for maritime services. When the value corresponding to the first information is the second preset value, it is used to indicate that the network device allows access for maritime services. When the value corresponding to the second information is the fourth preset value, it is used to indicate that the network device allows NTN access.

[0024] In this application, different values ​​are set for the first information and the second information. The first information is used to indicate whether the network device is allowed to access for maritime services through different values. The first information is also used to indicate whether the network device is allowed to access via NTN through different values. Therefore, when the first information and the second information are used to indicate that the network device is allowed to access for maritime services and allows NTN access, the terminal determines that the network device is allowed to access for maritime services. Thus, the terminal can determine whether the network device is allowed to access for maritime services by summarizing the first information and the second information in the system information.

[0025] In some embodiments, the system information includes a system information block SIB1. Determining whether the network device allows the terminal to access the network device for maritime services, based on whether the system information includes first information, includes:

[0026] Based on whether SIB1 includes the first information, determine whether the network device allows the terminal to access the network device for maritime business.

[0027] In this application, the first information is written into SIB1. The terminal can determine whether it is allowed to access the network device for maritime business by checking whether the first information is included in SIB1.

[0028] In some embodiments, the method further includes:

[0029] A third message is sent to the network device, which instructs the terminal to request access to maritime services.

[0030] In this application, the terminal sends third information to the network device to notify the network device that the terminal requests access to maritime services, and the network device can subsequently allocate maritime services to the terminal.

[0031] In some embodiments, sending third information to the network device includes:

[0032] The network device sends Radio Resource Control (RRC) information, which includes at least one of RRC connection establishment request information and RRC connection recovery request information, and the RRC information carries the third information.

[0033] In this application, the terminal carries the third information through RRC information to notify the network device that the terminal requests access to maritime services, and the network device can subsequently allocate maritime services to the terminal.

[0034] In some embodiments, the method further includes:

[0035] A fourth message is sent to the network device, which indicates that the terminal has maritime capabilities.

[0036] In this application, the terminal notifies the network device that it has maritime capabilities by sending a fourth message, and the network device can subsequently allocate maritime services to the terminal.

[0037] In some embodiments, sending the fourth information to the network device includes:

[0038] The terminal capability information is sent to the network device, and the terminal capability information carries the fourth information.

[0039] In this application, the terminal carries the fourth information through the terminal capability information to notify the network device that the terminal has maritime capabilities, and the network device can subsequently allocate maritime services to the terminal.

[0040] Secondly, a communication method is proposed for application in network devices, the method comprising:

[0041] Broadcast system information, which includes first information indicating whether the network device allows access for maritime business.

[0042] In some embodiments, the value corresponding to the first information is a second preset value, and when the value corresponding to the first information is the second preset value, it is used to indicate that the network device allows access for maritime services.

[0043] In some embodiments, the value corresponding to the first information is a first preset value, and when the value corresponding to the first information is the first preset value, it is used to indicate that the network device does not allow access for maritime services.

[0044] In some embodiments, the first information is information used to indicate whether the second network allows access for maritime services.

[0045] In some embodiments, the method further includes:

[0046] The terminal receives third information from a terminal that supports non-terrestrial network (NTN) connections and has maritime capabilities. This third information is used to instruct the terminal to request access to maritime services.

[0047] In some embodiments, receiving third information from the terminal includes:

[0048] The terminal receives Radio Resource Control (RRC) information, which includes at least one of RRC connection establishment request information and RRC connection recovery request information, and the RRC information carries the third information.

[0049] In some embodiments, the method further includes:

[0050] The terminal receives a fourth message indicating that it supports non-terrestrial network (NTN) connectivity and has maritime capabilities.

[0051] In some embodiments, receiving fourth information from the terminal includes:

[0052] Receive terminal capability information from the terminal, which carries the fourth information.

[0053] Thirdly, a communication method is proposed, including:

[0054] Network equipment broadcasts system information;

[0055] The terminal receives system information from the network device and determines whether the terminal is allowed to access the network device for maritime business based on whether the system information includes first information. The terminal supports non-terrestrial network (NTN) connection and has maritime capabilities. The first information is used to indicate whether the network device allows access for maritime business.

[0056] Fourthly, a communication device is proposed for use in a terminal, which supports non-terrestrial network (NTN) connections and has maritime capabilities; the device includes:

[0057] The receiving module is used to receive system information from network devices;

[0058] The processing module is used to determine whether the terminal is allowed to access the network device for maritime business based on whether the system information includes first information, wherein the first information is used to indicate whether the network device allows access for maritime business.

[0059] Fifthly, a communication device is proposed for use in network equipment, the device comprising:

[0060] The transmitting module is used to broadcast system information, which includes first information indicating whether the network device allows access for maritime business.

[0061] Sixthly, a terminal is proposed, comprising: a processor, and a memory communicatively connected to the processor;

[0062] This memory stores instructions executed by the computer;

[0063] The processor executes computer execution instructions stored in the memory to implement methods such as those in the first aspect and in some embodiments of the first aspect.

[0064] Sixthly, a network device is proposed, comprising: a processor, and a memory communicatively connected to the processor;

[0065] This memory stores instructions executed by the computer;

[0066] The processor executes computer execution instructions stored in the memory to implement the methods of the second aspect and the second aspect in some embodiments.

[0067] Seventhly, a communication system is proposed, including a terminal and network equipment; wherein,

[0068] This terminal is used to implement methods as described in the first aspect and in some embodiments of the first aspect;

[0069] The network device is used to implement the second aspect and the methods of the second aspect in some embodiments.

[0070] In an eighth aspect, a computer-readable storage medium is provided that stores computer-executable instructions, which, when executed by a processor, are used to implement the first to third aspects and the methods of the first to third aspects in some embodiments.

[0071] Ninthly, a computer program product is proposed, comprising a computer program that, when executed by a processor, implements the first to third aspects and the methods of the first to third aspects in some embodiments. Attached Figure Description

[0072] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0073] Figure 1 This is a structural diagram of a communication system shown in one embodiment of this application;

[0074] Figure 2 This is a schematic flowchart illustrating a communication method according to an embodiment of this application;

[0075] Figure 3 This is a schematic flowchart illustrating a communication method according to another embodiment of this application;

[0076] Figure 4 This is a schematic flowchart illustrating a communication method according to another embodiment of this application;

[0077] Figure 5 This is a schematic flowchart illustrating a communication method according to another embodiment of this application;

[0078] Figure 6 This is a schematic block diagram of a communication device shown in one embodiment of this application;

[0079] Figure 7 This is a schematic block diagram of a communication device shown in another embodiment of this application;

[0080] Figure 8 This is a schematic block diagram of a communication device shown in one embodiment of this application.

[0081] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0082] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0083] In marine communications, the following types of maritime communication service requirements are generally included: distress alerts / calls, shore-to-ship distress relay alerts / calls, ship-to-shore, shore-to-ship and ship-to-ship search and rescue coordination communications, ship-to-shore transmission of maritime safety information, shore-to-ship broadcast of maritime safety information, ship-to-shore, shore-to-ship and ship-to-ship general communications, and bridge-to-bridge communications. These maritime communication service requirements may have a certain priority processing order, such as the following order: distress, urgency, safety, and routine (general communications).

[0084] When a terminal needs to access network devices to handle maritime services, it cannot determine whether the network device has the capability to handle maritime services. This causes maritime terminals to attempt to apply to more network devices when they need to apply for dedicated maritime services, resulting in increased access latency and untimely service response. At the same time, the network cannot identify whether a terminal has maritime capabilities and cannot accurately configure dedicated maritime services for terminals with maritime capabilities, affecting the service experience, especially the rapid processing of high-priority communication services such as distress and search and rescue. The technical solutions of this application embodiment can be applied to various communication systems, such as: Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication systems, future 5th Generation (5G) communication systems or new radio access technology (NR), vehicle-to-other devices (V2X), where V2X can include vehicle-to-network (V2N), vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P), etc., Long Term Evolution-Vehicle (LTE-V) communication, vehicle-to-everything (V2X) communication, machine-type communication (M2X). Communication technologies such as MTC (Mechanical, Communication and Communication Technology), Internet of Things (IoT), Long Term Evolution-Machine (LTE-M), and Machine to Machine (M2M) are mentioned.

[0085] To facilitate understanding of the embodiments of this application, firstly, in conjunction with Figure 1 This application describes in detail the communication system applicable to the embodiments of this application. For example... Figure 1 As shown, the communication system 100 may include at least one network device, such as Figure 1The network device 110 shown; the communication system 100 may also include at least one terminal, for example Figure 1 The terminal 120 shown can be mobile or fixed. The network device 110 is a device that can communicate with the terminal 120 via a wireless link, such as a base station or base station controller. Each network device can provide communication coverage for a specific geographical area and can communicate with terminals located within that coverage area (cell).

[0086] In this embodiment of the application, the network device 110 may include non-terrestrial network devices, such as satellites, which can be regarded as mobile network devices, and no specific limitation is made here.

[0087] The network device 110 in this disclosure is a network-side entity used for transmitting or receiving signals. The network device can be a network-side device. For example, the network device 110 can be an evolved NodeB (eNB), a transmission reception point (TRP), a next-generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. This disclosure does not limit the specific technology or device form used in the network device.

[0088] The network device provided in this embodiment can be composed of a central unit (CU) and a distributed unit (DU). The CU can also be called a control unit. By adopting the CU-DU structure, the protocol layer of the network device, such as a base station, can be separated. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU, which is centrally controlled by the CU.

[0089] In this embodiment, terminal 120 is a user-side entity used to receive or transmit signals, such as a mobile phone. A terminal can also be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), user-side equipment, etc. Terminals can be communication-enabled vehicles, smart cars, mobile phones, wearable devices, tablets, computers with wireless transceiver capabilities, virtual reality (VR) terminals, augmented reality (AR) terminals, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc.

[0090] In some embodiments, terminal 120 supports non-terrestrial network (NTN) connectivity and has maritime capabilities. Network device 110 broadcasts system information, and terminal 120 receives the system information. Based on whether the system information includes first information, terminal 120 determines whether it is allowed to access network devices for maritime services. The first information is used to indicate whether network devices allow access for maritime services. In this way, terminal 120 can quickly determine whether network devices allow access for maritime services without attempting to initiate access requests to more network devices, thus reducing access latency.

[0091] The embodiments disclosed herein do not limit the specific technologies or device forms used in the terminal / network devices.

[0092] It is understood that the communication system described in the embodiments of this disclosure is for the purpose of more clearly illustrating the technical solutions of the embodiments of this disclosure, and does not constitute a limitation on the technical solutions provided in the embodiments of this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this disclosure are also applicable to similar technical problems.

[0093] To facilitate understanding of the embodiments of this application, the terms involved in this application will be briefly explained first.

[0094] Cell: A cell is described from the perspective of resource management, mobility management, or service unit by higher layers. The coverage area of ​​each network device can be divided into one or more cells, and each cell can correspond to one or more frequency points. In other words, each cell can be regarded as an area formed by the coverage of one or more frequency points.

[0095] RRC (Radio Resource Control) connection: Before normal communication, a terminal device can establish an RRC connection with network devices, or in other words, with the cell. When the RRC connection is broken, the terminal device cannot communicate normally.

[0096] Based on this, this application provides a communication method to quickly identify whether a network device allows a terminal to access the network device for maritime business.

[0097] It is understood that in the embodiments of this application, "for indicating" can include both direct and indirect indication, as well as explicit and implicit indication. The information indicated by a certain piece of information is called the information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated, such as, but not limited to, directly indicating the information to be indicated, such as the information to be indicated itself or its index. It can also indirectly indicate the information to be indicated by indicating other information, where there is a correlation between the other information and the information to be indicated. It can also indicate only a part of the information to be indicated, while the other parts are known or pre-agreed upon. For example, the indication of the information to be indicated can be achieved by pre-agreed upon (e.g., by a protocol specifying) the existence of a certain information element, thereby reducing the indication overhead to some extent.

[0098] It is understood that in the embodiments shown below, the terms "first," "second," and various numerical designations are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. For example, they may be used to distinguish different indication information, different time intervals, etc.

[0099] Understandably, "preset values" can be implemented by pre-storing corresponding codes, tables, or other means of indicating relevant information in a device (e.g., including terminal devices and network devices), and this application does not limit the specific implementation method. "Storing" can refer to storing in one or more memories. These memories can be separate installations or integrated into an encoder or decoder, processor, or communication device. Alternatively, some memories can be separate installations, while others are integrated into the decoder, processor, or communication device. The type of memory can be any form of storage medium, and this application does not limit this.

[0100] It is understood that the “protocol” involved in the embodiments of this application may refer to standard protocols in the field of communication, such as LTE protocol, NR protocol and related protocols applied to future communication systems, and this application does not limit it.

[0101] Understandably, "at least one" refers to one or more, while "more" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, and c can mean: a, or, b, or, c, or, a and b, or, a and c, or, b and c, or, a, b, and c. Here, a, b, and c can be single or multiple.

[0102] It is understood that in the embodiments of this application, descriptions such as "when," "under the circumstances," "if," and "if" all refer to the fact that the device (e.g., a terminal device or a network device) will make corresponding processing under certain objective circumstances. They are not time limits, nor do they require the device (e.g., a terminal device or a network device) to make a judgment action when implementing it, nor do they imply any other limitations.

[0103] It is understood that, for the sake of clarity in illustrating the embodiments of this application, unless otherwise specified, all message names mentioned herein refer to message names in NR (New Message List). However, it is understood that these message names are merely illustrative examples for ease of understanding and should not constitute any limitation on this application. This application does not preclude the possibility of defining other message names in future protocols to replace the message names listed in this application to achieve the same or similar functions. Furthermore, using message names in NR as examples to illustrate the embodiments of this application should not constitute any limitation on the scenarios to which the methods provided in this application are applicable. For example, "RRC connection recovery" in the following embodiments can be replaced with "RRC re-establishment," "RRC connection re-establishment," etc. For the sake of brevity, they are not listed here.

[0104] It is understood that several embodiments are described in detail below with reference to multiple flowcharts. However, it should be understood that these flowcharts and their corresponding descriptions are illustrative only for ease of understanding and should not constitute any limitation on this application. Not every step in each flowchart is necessarily required to be performed; for example, some steps can be skipped. Furthermore, the execution order of each step is not fixed and is not limited to what is shown in the figures. The execution order of each step should be determined by its function and internal logic.

[0105] The methods provided in the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0106] It should be understood that the following description is for ease of understanding and explanation only, using the interaction between a terminal device and a network device as an example to illustrate the methods provided in the embodiments of this application. However, this should not constitute any limitation on the subject executing the methods provided in this application. For example, the terminal device shown in the embodiments below can be replaced by components (such as chips or circuits) configured in the terminal device. The network device shown in the embodiments below can also be replaced by components (such as chips or circuits) configured in the network device.

[0107] The embodiments shown below do not specifically limit the structure of the execution subject of the method provided in the embodiments of this application. As long as it is possible to communicate according to the method provided in the embodiments of this application by running a program that records the code of the method provided in the embodiments of this application, for example, the execution subject of the method provided in the embodiments of this application can be a terminal device or a network device, or a functional module in a terminal device or network device that can call and execute a program.

[0108] Figure 2 This is a schematic flowchart illustrating a communication method according to an embodiment of this application; Figure 2 This is a schematic flowchart illustrating a communication method from the perspective of device interaction. (Example) Figure 2 As shown, the communication method may include steps 210 to 240. The details are as follows. Figure 2 Each step in the process.

[0109] S210, Network Equipment Broadcast System Information.

[0110] In some implementations, the terminal receives system information.

[0111] In some embodiments, network devices broadcast their supported capabilities, such as RedCap UE (Red Cap UE) and IAB (Integrated Access Backhaul). These capabilities are defined based on terminal access. For example, if a terminal requires IAB services, it must access a network device that supports IAB capabilities to execute the IAB services. In some embodiments, system information includes MIB (Master Information Block) and SIB1 (System Information Block 1).

[0112] In some embodiments, the network device broadcasts a master information block, and then broadcasts a system information block after broadcasting the master information block.

[0113] In some embodiments, the system information includes information indicating the capabilities supported by the network device. The capabilities supported by the network device correspond to the ability of a terminal to access the network device through a service with the corresponding capability and to complete the corresponding service after accessing the network device. In other words, the system information includes information indicating whether the network device allows access for a service corresponding to a certain capability.

[0114] In some embodiments, the system information block includes information indicating the capabilities supported by the network device. The capabilities supported by the network device correspond to the services that the terminal can access the network device through, and after accessing the network device, complete the corresponding service. That is, the system information block includes information indicating whether the network device allows access for a certain capability's corresponding service.

[0115] In some embodiments, the system information includes first information, which indicates whether the network device allows access for maritime business.

[0116] In some embodiments, the system information block includes first information, which is used to indicate whether the first network allows access for maritime services.

[0117] S220. The terminal determines whether it is allowed to be used for maritime business access network equipment based on whether the system information includes the first information.

[0118] In some embodiments, the terminal receives system information from the network device.

[0119] In some embodiments, after downlink synchronization, the terminal receives system information from the network device.

[0120] In some embodiments, the terminal receives a master information block from the network device and a system information block from the network device.

[0121] In some embodiments, the terminal supports non-terrestrial network (NTN) connectivity and has maritime capabilities.

[0122] In some implementations, for the purpose of accessing network devices for maritime services, the terminal accesses the network devices and performs maritime services after determining that it is permitted to do so.

[0123] In some embodiments, after receiving system information, the terminal determines whether it is allowed to be used for maritime business access network equipment based on whether the system information includes first information.

[0124] In some embodiments, after receiving the system information block, the terminal determines whether it is allowed to use the maritime business access network device based on whether the system information block includes first information.

[0125] In some embodiments, the terminal determines whether it is permitted to be used for maritime business access network equipment based on whether the system information includes first information and / or second information.

[0126] The second piece of information is used to indicate whether the network device allows NTN access.

[0127] In some embodiments, the terminal determines that the system information does not include the first information or does not include the second information, and therefore determines that the terminal is not allowed to be used for maritime business access network equipment.

[0128] In some embodiments, the terminal is not permitted to be used for maritime business access network devices. The terminal may be used for other business access network devices, but the terminal cannot perform maritime business after accessing the network device. The other business may be determined based on the system information broadcast by the network device.

[0129] The first information may be information used to indicate whether a network device allows access for maritime services, or the first information may also be information used to indicate whether a first network allows access for maritime services. The first network includes at least one of the following: a network selected by the terminal, a network registered by the terminal, and a network equivalent to the network registered by the terminal.

[0130] In some embodiments, the network includes at least one of a public land mobile network (PLMN) and a non-public network (NPN).

[0131] In some embodiments, for a terminal, at least one of the following networks constitutes a first network: the network it selects, the network it registers, and the network equivalent to the network registered by the terminal. Different terminals may have the same or different first networks.

[0132] In some embodiments, the network selected by the terminal includes at least one of the PLMN selected by the terminal and the NPN selected by the terminal.

[0133] In some embodiments, the network for terminal registration includes at least one of a terminal-registered PLMN and a terminal-registered NPN.

[0134] In some embodiments, the network equivalent to the network registered by the terminal includes at least one of the PLMN equivalent to the network registered by the terminal and the NPN equivalent to the network registered by the terminal.

[0135] In some embodiments, the equivalent PLMN can be an EPLMN (Equivalent Public Land Mobile Network), and the equivalent NPN can be an ENPN (Equivalent Non-Public Network).

[0136] In some embodiments, the first information is information used to indicate whether the first network allows access for maritime services. If the system information does not include the first information, it is determined that the terminal is not allowed to access the network device for maritime services.

[0137] In some embodiments, if the system information includes first information and second information, the terminal determines whether it is allowed to be used for maritime business access network equipment based on the first information.

[0138] In other embodiments, if the system information includes first information and second information, the terminal can also determine whether the terminal is allowed to be used for maritime business access network equipment based on the first information and second information.

[0139] In some embodiments, the first information is information used to indicate whether the first network allows access for maritime services.

[0140] In some embodiments, the terminal determines whether it is allowed to access the network device for maritime services based on first information used to indicate whether the first network allows access for maritime services.

[0141] In some embodiments, the first information is used to indicate whether the network device allows access for maritime services, and can be regarded as information used to indicate whether all networks carried by the network device allow access for maritime services.

[0142] In some embodiments, the first information is information used to indicate whether the first network allows access for maritime services. In this case, the first information is information used to indicate whether a portion of all networks allows access for maritime services. Depending on whether the portion of the networks includes the first network, it can be determined whether the terminal is allowed to access network devices for maritime services through the first network.

[0143] In some embodiments, if the system information includes first information and second information, the terminal determines whether it is allowed to be used for maritime business access network equipment based on the first information.

[0144] In some embodiments, the first information is a field set in the system information. The first information may correspond to different values. When the system information includes the first information and the second information, it can be determined whether the terminal is allowed to be used for maritime business access network equipment based on the value of the first information.

[0145] In some embodiments, the first information is a field that is set in the system information block.

[0146] The terminal determines the value corresponding to the first information. If the value corresponding to the first information is a first preset value, then the terminal is determined not to be allowed to access the network device for maritime services. The value corresponding to the first information being the first preset value is used to instruct the network device not to allow access for maritime services. If the value corresponding to the first information is a second preset value, then the terminal is determined to be allowed to access the network device for maritime services. The value corresponding to the first information being the second preset value is used to instruct the network device to allow access for maritime services.

[0147] In some embodiments, the first information is information used to indicate whether the first network allows access for maritime services. If the first information exists in the system information, it indicates that the network device has at least one network for maritime service access. It can be determined whether the at least one network for maritime service access of the network device includes the first network. If the first network is included, the terminal can access the network device for maritime services through the first network, which means that the network device allows the terminal to access for maritime services. If the first network is not included, it means that the network device does not allow the terminal to access for maritime services. Thus, it can be determined whether the terminal is allowed to access the network device for maritime services based on the first information.

[0148] In some embodiments, the first information may include at least one piece of information indicating whether one or more networks allow access for maritime services. Different pieces of information indicating whether a network allows access for maritime services correspond to different networks. For example, in one embodiment, there are five networks a, b, c, d, and e. The first information includes information 1 indicating whether networks a, b, and c allow access for maritime services and information 2 indicating whether networks d and e allow access for maritime services. Of course, in some embodiments, one network may correspond to one piece of information. For example, the first information may include information indicating whether network a allows access for maritime services. Thus, when the system information of the network device includes the first information, it indicates that networks a, b, c, d, and e allow access for maritime services. By checking whether the first network is included among the five networks a, b, c, d, and e, it can be determined whether the terminal is allowed to access the network device for maritime services.

[0149] In some embodiments, the first information is information used to indicate whether the first network allows access for maritime services. In this case, the first information is used to indicate whether at least one network allows access for maritime services. When the first information exists, it can be determined whether the first information indicates that the first network allows access for maritime services based on whether the at least one network indicated by the first information includes the first network.

[0150] In some embodiments, if the first information is information used to indicate whether the first network allows access for maritime services, the value corresponding to the first information is a second preset value, and at this time the first information does not have a first preset value.

[0151] In some embodiments, the first information is information used to indicate whether the network device allows access for maritime business. When the first information exists, the value corresponding to the first information can be a first preset value or a second preset value.

[0152] In some embodiments, the first information may include at least one piece of information for indicating whether a network allows access for maritime services. The fields corresponding to the information included in the first information may be different. In this way, the information included in the first information and the at least one network corresponding to the first information can be determined by the different fields.

[0153] In some embodiments, the field corresponding to the first information used to indicate whether the network device allows access for maritime services is different from the field corresponding to the first information used to indicate whether the first network allows access for maritime services.

[0154] If the first information is the cellBarredMaritime field, the cellBarredMaritime field is used to indicate whether the network device allows access for maritime services. The first preset value is barred, and the second preset value is notbarred. It is understood that the above is an example. In other embodiments, the first information can be other fields, and the first and second preset values ​​can be other values. No specific restrictions are made here.

[0155] For example, the first information is the mariTime-Support field, which indicates whether the first network allows access for maritime services. When the first information is absent, the network device does not allow access for maritime services, and the terminal is not allowed to access the network device for maritime services. However, when the first information is present, it indicates that at least one network in the network device allows access for maritime services. The second preset value can be Support. It is understood that the above is an example, and the first information can be other fields, and the second preset value can also be other values. In other embodiments, the first information is used to indicate whether the first network allows access for maritime services. The first information may include at least one piece of information for indicating whether one or more networks allow access for maritime services. Different information included in the first information may correspond to different fields, and different fields may correspond to different second preset values. However, as long as the first information exists, the value of the field of the information included in the first information is the corresponding second preset value. No specific restrictions are made here.

[0156] Understandably, the first network is at least one of the network selected by the terminal, the network registered by the terminal, and the network equivalent to the network registered by the terminal. However, for network devices, the first information in the system information broadcast by the network device may include other networks. Here, the first information in the system information broadcast by the network device is set to indicate whether the second network allows access for maritime services. When the terminal analyzes the first information, if there is both first information and second information, or if there is both first information and second information and the value corresponding to the second information is a fourth preset value, then it determines whether the second network indicated by the first information that allows access for maritime services includes the first network. If the second network includes the first network, it can be determined that the first network allows access for maritime services. The first network allowing access for maritime services means that the network device allows the terminal to access the network device for maritime services. At this time, the terminal can access the network device and interact with the network device to realize maritime services. If the second network does not include the first network, it can be determined that the first network does not allow access for maritime services, and the terminal is not allowed to access the network device for maritime services.

[0157] In some embodiments, the first information is information broadcast by the network device in the system information to indicate whether the second network allows access for maritime services. By determining whether the second network includes the first network, it can be determined whether the first information is used to indicate whether the first network allows access for maritime services. In this case, for the terminal, the terminal needs to determine whether the first network exists in the second network in the first information. Thus, the terminal regards the first information as information used to indicate whether the first network allows access for maritime services.

[0158] In some embodiments, if the system information includes first information and second information, the terminal determines whether it is allowed to be used for maritime business access network equipment based on the first information and second information.

[0159] In some embodiments, the first information is a certain field and the second information is another field. The first information and the second information are set in the system information. The first information may correspond to different values ​​and the second information may correspond to different values. When the system information includes the first information and the second information, it can be determined whether the terminal is allowed to be used for maritime business access network equipment based on the value of the first information and the value of the second information.

[0160] In some embodiments, the first information is a certain field, the second information is another field, and the first information and the second information are set in the system information block.

[0161] In some embodiments, the second information is the cellBarredNTN field, the third preset value can be the same as or different from the first preset value, such as the third preset value being barred, and the fourth preset value can be the same as or different from the second preset value, such as the fourth preset value being notbarred. It is understood that the above are exemplary. In other embodiments, the second information can also be other fields, and the third and fourth preset values ​​can also be other values. No specific restrictions are made here.

[0162] In some embodiments, if the first information is not available, the terminal determines that the network device does not allow the terminal with maritime capabilities to connect.

[0163] In some embodiments, the first information is information used to indicate whether the first network allows access for maritime services. If the first information does not exist, the terminal determines that all networks of the network device do not allow connections for maritime services, and the terminal is not allowed to access the network device for maritime services. If the first information exists, the value of the first information is the second preset value. The first information indicates that at least one network in the network device allows access for maritime services, and the terminal can determine whether the at least one network includes the first network to determine whether the terminal can be used for access for maritime services.

[0164] In some embodiments, the first information is used to indicate whether the network device allows access for maritime services. If the first information does not exist, the terminal determines that all networks of the network device do not allow access for maritime services, and the terminal is not allowed to access the network device for maritime services. If the first information exists, but the value corresponding to the first information is a first preset value, the terminal determines that all networks of the network device do not allow terminals with maritime capabilities to connect for maritime services, and the terminal is not allowed to access the network device for maritime services. If the first information exists, and the value corresponding to the first information is a second preset value, then the first information indicates that all networks in the network device allow access for maritime services, and the terminal can directly access the network device for maritime services. If the first information is used to indicate whether the network device allows access for maritime services and the value corresponding to the first information is a first preset value, or the value corresponding to the second information is a third preset value, then it is determined that the terminal is not allowed to access the network device for maritime services. When the value corresponding to the first information is a first preset value, it indicates that the network device does not allow access for maritime services; when the value corresponding to the second information is a third preset value, it indicates that the network device does not allow NTN access.

[0165] If the value corresponding to the first information is the second preset value and the value corresponding to the second information is the fourth preset value, then it is determined that the terminal is allowed to access the network device for maritime business. When the value corresponding to the first information is the second preset value, it is used to instruct the network device to allow access for maritime business. When the value corresponding to the second information is the fourth preset value, it is used to instruct the network device to allow NTN access.

[0166] In some embodiments, the first information is information used to indicate whether the first network allows access for maritime services. The value corresponding to the first information is a second preset value. In this case, the first information can be used to indicate that at least one network allows access for maritime services. The at least one network is referred to as the second network. If the first network is included in the second network that the network device allows access for maritime services, the first information is used to indicate that the first network allows access for maritime services. This can determine that the terminal is allowed to access the network device for maritime services.

[0167] In some embodiments, if the system information includes first information and second information, when the terminal determines whether it is allowed to access the network device for maritime services based on the first information and second information, it can first determine the value corresponding to the second information. If the value corresponding to the second information is a third preset value, the analysis of the first information can be skipped, and it can be determined that the network device does not allow NTN access. In this case, there is no need to determine the value of the first information. The network device does not allow access for maritime services, and the terminal can access the network device for ordinary services. However, after the terminal accesses the network device, it cannot perform maritime services and NTN services.

[0168] If the value corresponding to the second information is the fourth preset value, the terminal determines that the network device allows NTN access. The terminal then judges the value corresponding to the first information. If the first information is used to indicate whether the network device allows access for maritime services and the corresponding value is the first preset value, then the network does not allow access for maritime services. The terminal can access the network device with ordinary services or with NTN services, but the terminal cannot perform maritime services after accessing the network device. If the value corresponding to the first information is the second preset value, then the network allows access for maritime services. The terminal can access the network device with ordinary services, with NTN services, or with maritime services.

[0169] In some embodiments, if the system information includes first information and second information, the terminal may determine whether it is allowed to be used for maritime business access network equipment based solely on the first information, or the terminal may determine whether it is allowed to be used for maritime business access network equipment based solely on the first information and the second information.

[0170] S230, The terminal determines that it is permitted to be used for maritime business access network equipment.

[0171] The terminal determines whether it is allowed to use the maritime business access network device according to the method described in step S220, which will not be elaborated here.

[0172] In some embodiments, the terminal determines that it is permitted to be used for maritime business access network equipment.

[0173] In other embodiments, the terminal determines that it is not permitted to be used for maritime business access network equipment.

[0174] S240, The terminal sends third / fourth information to the network device.

[0175] In some implementations, the terminal determines that it is permitted to use the maritime business access network equipment, and the terminal can access the network equipment.

[0176] In some implementations, the third information is used to instruct the terminal to request access to maritime services; that is, when the network device receives the third information, it can determine that the terminal has maritime capabilities.

[0177] In some implementations, the fourth information is used to indicate that the terminal has maritime capabilities.

[0178] In some implementations, the terminal sends third and fourth information to the network device.

[0179] In some embodiments, the terminal sends Radio Resource Control (RRC) information to the network device. The RRC information includes at least one of RRC Setup Request and RRC Resume Request, and carries third information.

[0180] In some embodiments, the third information may be sent when the terminal accesses the network device.

[0181] The terminal sends an RRC connection establishment request message to the network device, and the RRC connection establishment request message carries third-party information.

[0182] The network device receives the RRC connection establishment request information and determines that the terminal has maritime capabilities based on the third information in the RRC connection establishment request information.

[0183] In some embodiments, when a network device receives an RRC connection establishment request, it sends an RRC response (RRC Setup) to the terminal. After receiving the RRC response, the terminal sends an RRC response reply (RRCSetup Complete) to the network device, thereby completing the connection between the terminal and the network device.

[0184] In some embodiments, the third information may be sent when the terminal and network device restore the RRC connection.

[0185] The terminal sends an RRC connection restoration request message to the network device, and the RRC connection restoration request message carries third-party information.

[0186] In some embodiments, the RRC connection establishment request information and the RRC connection recovery request information carry the services requested by the terminal.

[0187] In some embodiments, the third information may be a field that exists in the RRC connection establishment request information or the RRC connection recovery request information, and is used to indicate that the terminal requests access to maritime services, so that the network device can determine that the terminal has maritime capabilities.

[0188] In some embodiments, the third information may be the mariTime-Access field. When the mariTime-Access field is carried in the RRC connection establishment request information or the RRC connection recovery request information, it indicates that the terminal requests access to maritime services.

[0189] In some embodiments, the RRC connection establishment request information and the RRC connection recovery request information contain a reason value for the current RRC connection initiation, such as the establishmentCause field indicating the reason value for the current RRC connection initiation. A third piece of information is added to this reason value, indicating that the terminal requests access to maritime services.

[0190] In some embodiments, the terminal sends terminal capability information to the network device, and the terminal capability information carries fourth information.

[0191] In some embodiments, after the network device and the terminal complete the access, the network device sends a UE Capability Enquiry to the terminal, and after receiving the UE Capability Enquiry, the terminal sends a UE Capability Information to the network device.

[0192] The terminal capability information carries the capabilities that the terminal possesses.

[0193] In some embodiments, the fourth information may be a field, which, when present in the terminal capability information, is used to indicate that the terminal has maritime capabilities.

[0194] In some embodiments, the fourth information can be the mariTimeSupport field. When the mariTimeSupport field exists in the terminal capability information, it is used to indicate that the terminal has maritime capabilities.

[0195] In some embodiments, only terminals that support NTN can possess maritime capabilities.

[0196] In some embodiments, the network device determines that the terminal has maritime capabilities and can configure maritime services for the terminal.

[0197] In this embodiment, by checking whether the system information of the network device includes the first information, the terminal can determine whether the network device allows maritime service connections after receiving the system information. Thus, the terminal can use the network device for maritime access only after determining that the network device allows maritime service connections, and can choose not to access the network device after determining that the network device does not allow maritime service connections, instead searching for other network devices that allow maritime service connections. In this way, the terminal can quickly access network devices that allow maritime service connections without attempting to initiate applications for maritime service access to more network devices, thereby reducing access latency.

[0198] Figure 3 This is a schematic flowchart illustrating a communication method according to another embodiment of this application. Figure 3 The communication method shown can be applied to a terminal that supports non-terrestrial network (NTN) connection and has maritime capabilities; the communication method may include steps 301 to 302.

[0199] S301, Receive system information from network devices.

[0200] In some embodiments, when a network device receives a main information block, and the terminal is a terminal that supports non-terrestrial network (NTN) connections and has maritime capabilities, it may ignore the cellBarred (cell access denied) indication carried in the main information block and continue to receive system information blocks.

[0201] The specific implementation of the terminal receiving system information from the network device and the network device broadcasting system information can be found in the relevant embodiments of step S210, and will not be repeated here.

[0202] S302. Determine whether the terminal is allowed to be used for maritime business access network equipment based on whether the system information includes the first information.

[0203] In some embodiments, the first information is used to indicate whether the network device allows access for maritime business. The terminal can determine whether it is allowed to access the network device for maritime business based on whether the system information includes the first information.

[0204] If the terminal is determined to be allowed to access the network device for maritime services, then the terminal can be used to access the network device for maritime services. The network device will allocate maritime services to the terminal, and the terminal will execute the maritime services. If the terminal is determined not to be allowed to access the network device for maritime services, then the terminal can be used to access the network device for ordinary services, or it can choose not to access that network device and instead look for other network devices that allow the terminal to access the network device for maritime services. If the terminal is used to access the network device for ordinary services, the network device will allocate ordinary services to the terminal, and the terminal will not be able to execute maritime services.

[0205] In this embodiment, by checking whether the system information of the network device includes the first information, the terminal can determine whether the network device allows maritime service connections after receiving the system information. Thus, the terminal can use the network device for maritime access only after determining that the network device allows maritime service connections, and can choose not to access the network device after determining that the network device does not allow maritime service connections, instead searching for other network devices that allow maritime service connections. In this way, the terminal can quickly access network devices that allow maritime service connections without attempting to initiate applications for maritime service access to more network devices, thereby reducing access latency.

[0206] Figure 4 This is a schematic flowchart of the communication method provided in the embodiments of this application. Figure 4 Shown Figure 3 One implementation of step S302 is that the communication method may include steps 401 to 404.

[0207] S401. Determine whether the system information includes the first information and / or the second information.

[0208] In some embodiments, the terminal may determine whether it is permitted to use the maritime business access network device based on whether the system information includes first information and / or second information.

[0209] In some embodiments, the second information is used to indicate whether the network device allows NTN access.

[0210] In some embodiments, the system information includes a system information block SIB1. Based on whether SIB1 includes first information, it is determined whether the network device allows the terminal to access the network device for maritime business.

[0211] In some embodiments, the network device determines whether it allows the terminal to access the network device for maritime business based on whether SIB1 includes first information and second information.

[0212] In some embodiments, the first information and the second information are located in SIB1.

[0213] In this embodiment of the application, the first information is written into SIB1. The terminal can determine whether it is allowed to use the maritime business access network device by whether the first information is included in SIB1.

[0214] Determining whether system information includes first information and second information can be done by determining whether the system information block includes first information and second information.

[0215] In some embodiments, determining whether the system information includes the first information and / or the second information can yield four results: the system information does not include either the first information or the second information; the system information includes the first information but does not include the second information; the system information does not include the first information but does not include the second information; and the system information includes both the first information and the second information.

[0216] In some embodiments, if the system information does not include the first information or does not include the second information, then S402 is executed to determine that the terminal is not allowed to be used for maritime business access network devices.

[0217] The system information not including the first information or not including the second information can include three situations: the system information does not include either the first information or the second information, the system information includes the first information but does not include the second information, and the system information does not include the first information but includes the second information.

[0218] In some embodiments, the first information is used to indicate whether the network device allows access for maritime services; in other embodiments, the first information is information used to indicate whether the first network allows access for maritime services.

[0219] In some embodiments, the system information does not include the first information or does not include the second information, and it is determined that the terminal is not allowed to be used for maritime business access network equipment.

[0220] The implementation method of step S402 can refer to the relevant implementation method of step S220, and will not be elaborated here.

[0221] If the system information includes the first information and the second information, S403, determine whether the terminal is allowed to be used for maritime business access network equipment based on the first information.

[0222] In some embodiments, if the system information includes first information and second information, it can be determined whether the terminal is allowed to be used for maritime business access network equipment based solely on the first information.

[0223] In some embodiments, the first information is information used to indicate whether a first network allows access for maritime services, and the first network includes at least one of the following: a network selected by the terminal, a network registered by the terminal, and a network equivalent to the network registered by the terminal.

[0224] In some embodiments, the network includes at least one of a public land mobile network (PLMN) and a non-public network (NPN).

[0225] In some embodiments, if the first information is used to indicate whether the network device allows access for maritime services, and the value corresponding to the first information is a first preset value, then it is determined that the terminal is not allowed to access the network device for maritime services, and the value corresponding to the first information is a first preset value used to indicate that the network device does not allow access for maritime services; if the value corresponding to the first information is a second preset value, then it is determined that the terminal is allowed to access the network device for maritime services, and the value corresponding to the first information is a second preset value used to indicate that the network device allows access for maritime services.

[0226] In some embodiments, the first information is used to indicate whether the network device allows access for maritime services. The value corresponding to the first information can be a first preset value or a second preset value. The first preset value and the second preset value can be used to determine whether the network device allows access for maritime services.

[0227] In some embodiments, the first information is information used to indicate whether the first network allows access for maritime services. The value corresponding to the first information is determined to be a second preset value. In this case, the first information is used to indicate that at least one network in the network device allows access for maritime services. The at least one network is set as the second network. At this time, it can be determined whether the second network includes the first network, and whether the network device allows the terminal to access for maritime services. If the second network includes the first network and the first network allows access for maritime services, it is determined that the network device allows the terminal to access for maritime services. If the second network does not include the first network and the first network does not allow access for maritime services, it is determined that the network device does not allow the terminal to access for maritime services. However, if at least one of the networks selected by other terminals, the registered networks, and the networks equivalent to the registered networks are located in the second network, then the network device allows the corresponding terminal to access for maritime services.

[0228] The implementation method of step S403 can be referred to the relevant implementation method of step S220, and will not be elaborated here.

[0229] If the system information includes the first information and the second information, S404 determines whether the terminal is allowed to be used for maritime business access network equipment based on the first information and the second information.

[0230] In some embodiments, if the system information includes first information and second information, it can be determined whether the terminal is allowed to be used for maritime business access network equipment through the first information and second information.

[0231] In some embodiments, the first information is information used to indicate whether a first network allows access for maritime services, and the first network includes at least one of the following: a network selected by the terminal, a network registered by the terminal, and a network equivalent to the network registered by the terminal.

[0232] In some embodiments, the network includes at least one of a public land mobile network (PLMN) and a non-public network (NPN).

[0233] In some embodiments, if the value corresponding to the first information is a first preset value, it is determined that the terminal is not allowed to be used for accessing the network device for maritime services. When the value corresponding to the first information is the first preset value, it is used to indicate that the network device does not allow access for maritime services. If the value corresponding to the first information is a second preset value, it is determined that the terminal is allowed to be used for accessing the network device for maritime services. When the value corresponding to the first information is the second preset value, it is used to indicate that the network device allows access for maritime services.

[0234] In some embodiments, if the first information is information used to indicate whether the first network allows access for maritime services, and the value corresponding to the second information is a third preset value, it is not necessary to consider the value of the first information to determine that the terminal is not allowed to access the network device for maritime services; if the value corresponding to the second information is a fourth preset value, and the first information is a second preset value, then it is determined that the network device allows NTN access, and the first network allows access for maritime services. If the terminal determines that the first network does not allow access for maritime services, then it can be determined that the terminal is not allowed to access the network device for maritime services; if the value corresponding to the second information is a fourth preset value, and the first information is a second preset value, then it is determined that the network device allows NTN access, and the first network allows access for maritime services. If the terminal determines that the first network allows access for maritime services, then it can be determined that the terminal is allowed to access the network device for maritime services.

[0235] The implementation of step S404 can be referred to the relevant embodiments of step S220, and will not be repeated here.

[0236] In some embodiments, the network device needs to determine whether the terminal has maritime capabilities.

[0237] In some embodiments, the terminal sends third information to the network device, the third information being used to instruct the terminal to request access to maritime services.

[0238] In some embodiments, the network device receives third information to determine that the terminal requests access to maritime services, thereby determining that the terminal has maritime capabilities.

[0239] The implementation method of the terminal sending third information to the network device can be referred to the relevant embodiments of step S240, which will not be elaborated here.

[0240] In some embodiments, the terminal sends Radio Resource Control (RRC) information to the network device. The RRC information includes at least one of RRC connection establishment request information and RRC connection recovery request information, and the RRC information carries third information.

[0241] When accessing network devices, terminals can carry third-party information through RRC connection establishment request information or RRC connection recovery request information to inform network devices that the terminal requests access to maritime services.

[0242] The implementation method of the terminal sending RRC information to the network device can be referred to the relevant embodiments of step S240, which will not be repeated here.

[0243] In some embodiments, the terminal sends a fourth message to the network device, the fourth message being used to indicate that the terminal has maritime capabilities.

[0244] In some embodiments, the network device receives fourth information to determine that the terminal has maritime capabilities.

[0245] The implementation method of the terminal sending the fourth information to the network device can be referred to the relevant embodiments of step S240, which will not be repeated here.

[0246] In some embodiments, the terminal sends terminal capability information to the network device, and the terminal capability information carries fourth information.

[0247] After connecting to the network device, the network device actively requests the terminal's supported capability information from the terminal. The network device sends terminal capability query information to the terminal. After receiving the terminal capability query information, the terminal sends terminal capability information to the network device, informing the network device that the terminal has maritime capabilities.

[0248] The implementation method for the terminal to send terminal capability information to the network device can be referred to the relevant embodiments of step S240, which will not be elaborated here.

[0249] Figure 5 This is a schematic flowchart of the communication method provided in the embodiments of this application. Figure 5 The communication method shown can be applied to network devices, and the communication method may include step 501.

[0250] S501, Broadcast system information, the system information including first information, the first information being used to indicate whether the network device allows access for maritime business.

[0251] In some embodiments, first information is written into the system information, which is used to indicate whether the network device allows access for maritime services.

[0252] In some embodiments, the system information includes a system information block, in which first information is written, which is used to indicate whether the network device allows access for maritime services.

[0253] In some embodiments, if the system information includes first information, then a terminal that supports non-terrestrial network (NTN) connection and has maritime capabilities can determine whether it is allowed to access network devices for maritime services based on whether the system information includes the first information when it needs to conduct maritime business.

[0254] The implementation of step S501 can be referred to the relevant embodiments of step S210, and will not be repeated here.

[0255] In this embodiment, when broadcasting system information, the network device can add first information to the system information to inform the terminal receiving the system information whether the network device allows the connection of maritime services. Thus, the terminal can determine whether the network device allows the connection of maritime services before accessing the network device. If it is determined that the network device allows the connection of maritime services, then the terminal can use the network device for maritime access. If it is determined that the network device does not allow the connection of maritime services, the terminal can not access the network device, but instead look for other network devices that allow the connection of maritime services. In this way, the terminal can quickly access network devices that allow the connection of maritime services without trying to initiate a request for maritime service access to more network devices, thereby reducing access latency.

[0256] In some embodiments, the value corresponding to the first information is a second preset value, and when the value corresponding to the first information is the second preset value, it is used to indicate to the network device that access for maritime services is permitted.

[0257] In some embodiments, if the value corresponding to the first information is used to indicate that the network device allows access for maritime services, the system information should also include the second information.

[0258] In some embodiments, the system information includes first information and second information, and the value corresponding to the first information is a second preset value, which instructs the network device to allow access for maritime business.

[0259] In some embodiments, the second information is used to indicate whether the network device allows NTN access.

[0260] In some embodiments, the system information includes first information and second information, where the value corresponding to the first information is a second preset value and the value of the second information is a fourth preset value, thereby instructing the network device to allow access for maritime services.

[0261] When the value corresponding to the second piece of information is the fourth preset value, it is used to indicate to the network device that NTN access is allowed.

[0262] In some embodiments, the system information includes first information and second information, where the value corresponding to the first information is a second preset value and the value of the second information is a third preset value, thus indicating that the network device does not allow access for maritime business.

[0263] When the value corresponding to the second piece of information is the third preset value, it is used to indicate that the network device does not allow NTN access.

[0264] In some embodiments, the first information and the second information are located in the system information block of the system information.

[0265] When the value corresponding to the first information is the second preset value, the implementation method used to indicate that the network device allows access for maritime business can be referred to the relevant embodiments of step S220, which will not be repeated here.

[0266] In some embodiments, the value corresponding to the first information is a first preset value, and when the value corresponding to the first information is the first preset value, it is used to indicate that the network device does not allow access for maritime services.

[0267] In some embodiments, there is second information, or there is second information and the value corresponding to the second information is a fourth preset value. Whether access for maritime services is allowed can be determined by the value corresponding to the first information. The first preset value corresponding to the first information is used to indicate that the network device does not allow access for maritime services.

[0268] In some embodiments, the first information is used to indicate whether the network device allows access for maritime services. In this case, the value of the first information may have a first preset value. When the value of the first information is the first preset value, it is used to indicate that the network device does not allow access for maritime services.

[0269] In some embodiments, if there is no second information, or if there is second information and the value corresponding to the second information is a third preset value, the value of the first information may be uncertain. When the value corresponding to the second information is the third preset value, it is used to indicate that the network device does not allow NTN access. If NTN access is not allowed, then access for maritime services will necessarily be not allowed.

[0270] When the value corresponding to the first information is the first preset value, the implementation method used to indicate that the network device is not allowed to access for maritime business can be referred to the relevant embodiments of step S220, which will not be repeated here.

[0271] In some embodiments, the first information is information used to indicate whether the second network allows access for maritime services.

[0272] In some embodiments, the first information is information used to indicate whether the second network allows access for maritime services.

[0273] In some embodiments, the system information includes first information, and the first information is information used to indicate that the second network allows access for maritime services, then the value corresponding to the first information is a second preset value.

[0274] In some embodiments, the network device broadcasts system information, which includes first information indicating that the second network allows access for maritime services.

[0275] The second network includes at least one of a public land mobile network (PLMN) and a non-public network (NPN).

[0276] In some embodiments, the network device may broadcast a second network in system information that supports access for maritime services.

[0277] When a terminal receives system information, it can determine whether the second network allowed for access to maritime services includes at least one of the network selected by the terminal, the network registered by the terminal, and the network equivalent to the network registered by the terminal. If it includes these, the terminal can be allowed to access the network equipment for maritime services.

[0278] In some embodiments, the first information is information used to indicate that the second network allows access for maritime services. The first information can be implemented in system information through a field, and the value of the first information is a second preset value used to indicate that the second network allows access for maritime services.

[0279] In some embodiments, a mariTime-Support field is set, which is used to indicate to the second network that the user's maritime services can be accessed. The mariTime-Support field corresponds to the second network. When the mariTime-Support field exists, the value corresponding to the mariTime-Support field is only a second preset value, which is used to indicate that the second network allows access for maritime services. If the system information does not have a mariTime-Support field, it indicates that the network device does not allow access for maritime services.

[0280] Of course, in some embodiments, the first information may include one or more pieces of information, different information being used to indicate information that one or more networks in the second network allow access for maritime business. The different pieces of information may correspond to different fields, and the values ​​corresponding to the different pieces of information are all second preset values. The networks corresponding to the different pieces of information are different, and the set of networks corresponding to the one or more pieces of information included in the first information is the second network.

[0281] When the first information and the second information exist, or when the first information and the second information exist and the value corresponding to the second information is a fourth preset value, the first information is information used to indicate that the second network allows access for maritime business. When the terminal accesses the network device, it determines whether the second network has at least one of the network selected by the terminal, the network registered by the terminal, and the network equivalent to the network registered by the terminal. If it exists, it means that the second network allows the terminal to access for maritime business.

[0282] Understandably, when the first information is used to indicate whether the network device allows access for maritime services, the fields represented by the first information are different from the fields represented by the first information when the first information is used to indicate whether the second network allows access for maritime services.

[0283] As mentioned above, when the first information is used to indicate whether the network device allows access for maritime services, the corresponding field of the first information can be cellBarredMaritime. When the first information is used to indicate whether the second network allows access for maritime services, the corresponding field of the first information can be mariTime-Support. Of course, the above are just examples, and other fields can also be used. No specific restrictions are imposed here.

[0284] Understandably, for a network device, the system information broadcast by the network device includes first information, which indicates whether the network device allows access for maritime services. This first information can be considered as information indicating whether all networks carried by the network device allow access for maritime services. If the system information includes first information, and the first information indicates whether a second network allows access for maritime services, then regardless of the value of the first information, it indicates that the second network allows access for maritime services. This second network is a subset of all networks carried by the network device. For a terminal, the first network is at least one of the network selected by the terminal, the network registered by the terminal, and a network equivalent to the network registered by the terminal. When the terminal receives the system information, if the first information indicates whether the second network allows access for maritime services, then... The network allows access for maritime services. If the system information includes the first information, then the first information sent by the network device is essentially information indicating that the second network allows access for maritime services. However, when the terminal determines whether it is allowed to access the network device for maritime services based on the first information, the terminal determines whether the first network exists in the second network. Then, it can determine whether the first information allows the terminal to access the network device for maritime services. That is, the terminal can regard the first information as information indicating that the first network allows access for maritime services. If the second network includes the first network, then for the terminal, the first information is used to indicate that the first network allows the terminal to access for maritime services. If the second network does not include the first network, then for the terminal, the first information is used to indicate that the first network does not allow the terminal to access for maritime services.

[0285] The implementation of the first information, which is used to indicate that the second network allows access for maritime services, can be found in the relevant embodiments of step S220, and will not be elaborated here.

[0286] In some embodiments, the network device receives third information from a terminal that supports non-terrestrial network (NTN) connections and has maritime capabilities. The third information is used to instruct the terminal to request access to maritime services.

[0287] In some embodiments, the terminal supports non-terrestrial network (NTN) connection and has maritime capabilities. The terminal determines the network device through system information and allows the terminal to access the network device for maritime business. The terminal determination process can be referred to the relevant embodiments of steps S210-S230, which will not be elaborated here.

[0288] When a terminal accesses a network device, it can send a third message to instruct the terminal to request access to maritime services. The network device receives the third message and determines that the terminal has requested access to maritime services, thereby confirming that the terminal has maritime capabilities.

[0289] The implementation method of network device receiving third information sent by terminal can be referred to the relevant embodiments of step S240, which will not be elaborated here.

[0290] In some embodiments, the network device receives Radio Resource Control (RRC) information from a terminal. The RRC information includes at least one of RRC connection establishment request information and RRC connection recovery request information, and the RRC information carries third information.

[0291] In some embodiments, when a terminal accesses the network, the network device may receive a third-party information carried by the terminal through an RRC connection establishment request or an RRC connection recovery request, thereby determining that the terminal is requesting access to maritime services.

[0292] The implementation method of receiving RRC information sent by the terminal by the network device can be referred to the relevant embodiments of step S240, which will not be repeated here.

[0293] In some embodiments, the network device receives fourth information from a terminal that supports non-terrestrial network (NTN) connectivity and has maritime capabilities. The fourth information is used to indicate that the terminal has maritime capabilities.

[0294] In some embodiments, the terminal accesses a network device, sends fourth information to the network device, and the network device determines that the terminal has maritime capabilities based on the fourth information.

[0295] The implementation method of receiving the fourth information from the network device terminal can be referred to the relevant embodiments of step S240, which will not be elaborated here.

[0296] In some embodiments, the network device receives terminal capability information from the terminal, and the terminal capability information carries fourth information.

[0297] After a terminal connects to a network device, the network device actively requests information about the capabilities supported by the terminal. The network device sends terminal capability query information to the terminal. After receiving the terminal capability query information, the terminal sends terminal capability information to the network device. The network device receives the terminal capability information and determines that the terminal has maritime capabilities.

[0298] The implementation method of network device receiving terminal capability information sent by terminal can be referred to the relevant embodiments of step S240, which will not be repeated here.

[0299] This application provides a communication method in which a network device broadcasts system information; a terminal receives system information from the network device and determines whether the terminal is allowed to access the network device for maritime business based on whether the system information includes first information. The terminal supports non-terrestrial network (NTN) connection and has maritime capabilities. The first information is used to indicate whether the network device allows access for maritime business.

[0300] Figure 6 This is a schematic block diagram of a communication device according to an embodiment of this application. Figure 6 As shown, the communication device 60 may include a receiving module 61 and a processing module 62.

[0301] In one implementation, the communication device 60 can be used to implement the operations corresponding to the terminal in the above embodiments. For example, the communication device 60 is a terminal, or a component configured in the terminal, such as a chip or circuit.

[0302] The communication device 60 can achieve Figures 2 to 5 The corresponding operations of the terminal in the illustrated communication method embodiment. The communication device 60 may include functions for performing... Figures 2 to 5 The modules of the method executed by the terminal in the illustrated communication method embodiment. Furthermore, each module in the communication device 60 and the aforementioned other operations and / or functions are respectively for implementing... Figures 2 to 5 The corresponding process in the communication method embodiment shown.

[0303] The receiving module 61 is used to receive system information from the network device, and the processing module 62 is used to determine whether the terminal is allowed to access the network device for maritime business based on whether the system information includes first information. The first information is used to indicate whether the network device allows access for maritime business.

[0304] In some embodiments, the processing module 62 is further configured to determine whether the terminal is allowed to access the maritime business network device based on whether the system information includes first information and / or second information, wherein the second information is used to indicate whether the network device allows NTN access.

[0305] In some embodiments, the processing module 62 is further configured to: determine that the terminal is not allowed to be used for maritime business access network equipment if the system information does not include the first information or does not include the second information, wherein the second information is used to indicate whether the network equipment allows NTN access; determine whether the terminal is allowed to be used for maritime business access network equipment based on the first information if the system information includes the first information and the second information; or determine whether the terminal is allowed to be used for maritime business access network equipment based on the first information and the second information if the system information includes the first information and the second information.

[0306] In some embodiments, the first information is information used to indicate whether a first network allows access for maritime services, and the first network includes at least one of the following: a network selected by the terminal, a network registered by the terminal, and a network equivalent to the network registered by the terminal.

[0307] In some embodiments, the network includes at least one of a public land mobile network (PLMN) and a non-public network (NPN).

[0308] In some embodiments, the processing module 62 is further configured to: if the value corresponding to the first information is a first preset value, determine that the terminal is not allowed to be used for accessing the maritime business network device; if the value corresponding to the first information is a first preset value, instruct the network device not to allow access for maritime business; if the value corresponding to the first information is a second preset value, determine that the terminal is allowed to be used for accessing the maritime business network device; if the value corresponding to the first information is a second preset value, instruct the network device to allow access for maritime business.

[0309] In some embodiments, the processing module 62 is further configured to: determine that the terminal is not allowed to access the maritime business network device if the value corresponding to the first information is a first preset value or the value corresponding to the second information is a third preset value; when the value corresponding to the first information is the first preset value, the processing module 62 is configured to instruct the network device not to allow access for maritime business, and when the value corresponding to the second information is the third preset value, the processing module 62 is configured to instruct the network device not to allow NTN access; and determine that the terminal is allowed to access the maritime business network device if the value corresponding to the first information is the second preset value and the value corresponding to the second information is a fourth preset value; when the value corresponding to the first information is the second preset value, the processing module 62 is configured to instruct the network device to allow access for maritime business, and when the value corresponding to the second information is the fourth preset value, the processing module 62 is configured to instruct the network device to allow NTN access.

[0310] In some embodiments, system information includes system information block SIB1.

[0311] In some embodiments, the processing module 62 is further configured to determine whether the network device allows the terminal to access the network device for maritime services based on whether SIB1 includes the first information.

[0312] In some embodiments, the communication device 60 may include a sending module, which is used to send third information to a network device, the third information being used to instruct a terminal to request access to maritime services.

[0313] In some embodiments, the communication device 60 may include a transmitting module, which is used to transmit Radio Resource Control (RRC) information to a network device. The RRC information includes at least one of RRC connection establishment request information and RRC connection recovery request information, and the RRC information carries third information.

[0314] In some embodiments, the communication device 60 may include a transmitting module, which is used to transmit fourth information to a network device, the fourth information being used to indicate that the terminal has maritime capabilities.

[0315] In some embodiments, the communication device 60 may include a transmitting module, which is used to transmit terminal capability information to the network device, the terminal capability information carrying fourth information.

[0316] Figure 7 This is a schematic block diagram of a communication device shown in another embodiment of this application. Figure 7 As shown, the communication device 70 may include a transmitting module 71.

[0317] In one implementation, the communication device 70 can be used to implement the operation corresponding to the network device in the above embodiments. For example, the communication device 70 is a network device, or a component configured in the network device, such as a chip or circuit.

[0318] The communication device 70 can achieve Figures 2 to 5 The corresponding operation of the network device in the illustrated communication method embodiment. The communication device 70 may include functions for performing... Figures 2 to 5 The modules in the communication method embodiment shown are modules of the method executed by the network device. Furthermore, each module in the communication device 70 and the other operations and / or functions described above are respectively for implementing... Figures 2 to 5 The corresponding process in the communication method embodiment shown.

[0319] The sending module 71 is used to broadcast system information, which includes first information, used to indicate whether the network device allows access for maritime business.

[0320] In some embodiments, the value corresponding to the first information is a second preset value, and when the value corresponding to the first information is the second preset value, it is used to indicate to the network device that access for maritime services is permitted.

[0321] In some embodiments, the value corresponding to the first information is a first preset value, and when the value corresponding to the first information is the first preset value, it is used to indicate that the network device does not allow access for maritime services.

[0322] In some embodiments, the first information is information used to indicate whether the second network allows access for maritime services.

[0323] In some embodiments, the communication device 70 may include a receiving module for receiving third information from a terminal. The terminal supports non-terrestrial network (NTN) connection and has maritime capabilities. The third information is used to instruct the terminal to request access to maritime services.

[0324] In some embodiments, the communication device 70 may include a receiving module for receiving Radio Resource Control (RRC) information from a terminal. The RRC information includes at least one of RRC connection establishment request information and RRC connection recovery request information, and the RRC information carries third information.

[0325] In some embodiments, the communication device 70 may include a receiving module for receiving fourth information from a terminal, the terminal supporting non-terrestrial network (NTN) connection and having maritime capabilities, the fourth information being used to indicate that the terminal has maritime capabilities.

[0326] In some embodiments, the communication device 70 may include a receiving module, which is used to receive terminal capability information from a terminal, the terminal capability information carrying fourth information.

[0327] Figure 8 This is a schematic block diagram of a communication device shown in one embodiment of this application. Figure 8 As shown, the communication device 80 can be a network device or a terminal. The communication device 80 can be used to implement the methods described in the above method embodiments. For details, please refer to the description in the above method embodiments.

[0328] The communication device 80 includes a processor 81 and a memory 82 that is communicatively connected to the processor 81.

[0329] Memory 82 is used to store computer-executed instructions.

[0330] The processor 81 is used to execute the computer execution instructions stored in the memory, so that the communication device 80 performs the above method.

[0331] In some embodiments, the communication device 80 may further include a transceiver 83, which may include a transmitter and / or a receiver. The transmitter may also be referred to as a transmitter, transmitter port, or transmitter interface, and the receiver may also be referred to as a receiver port, receiver interface, or similar descriptions. Exemplarily, the memory 82, processor 81, and transceiver 83 are interconnected via a bus 84.

[0332] The processor 80 can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this application can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules within the processor.

[0333] In some embodiments, all or part of the memory 82 may also be located outside the communication device 80.

[0334] In some embodiments, the communication device 80 is a terminal, and the terminal includes: a processor and a memory communicatively connected to the processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the communication method performed by the terminal as described above.

[0335] In some embodiments, the communication device 80 is a network device, which includes: a processor and a memory communicatively connected to the processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the communication method performed by the network device as described above.

[0336] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the communication method shown in any of the above embodiments.

[0337] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the communication method shown in any of the above embodiments.

[0338] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0339] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A communication method, characterized in that, The method is applied to a terminal that supports non-terrestrial network (NTN) connections and has maritime capabilities; the method includes: Receive system information from network devices; Based on whether the system information includes first information, it is determined whether the terminal is allowed to access the network device for maritime business. The first information is used to indicate whether the network device allows access for maritime business.

2. The method according to claim 1, characterized in that, The step of determining whether the terminal is allowed to access the network device for maritime business based on whether the system information includes the first information includes: Based on whether the system information includes first information and / or second information, it is determined whether the terminal is allowed to access the network device for maritime business, wherein the second information is used to indicate whether the network device allows NTN access.

3. The method according to claim 2, characterized in that, The step of determining whether the terminal is permitted to access the network device for maritime business based on whether the system information includes first information and / or second information includes: If the system information does not include the first information or does not include the second information, it is determined that the terminal is not allowed to access the network device for maritime business. If the system information includes the first information and the second information, determine whether the terminal is allowed to access the network device for maritime business based on the first information; or... If the system information includes the first information and the second information, it is determined whether the terminal is allowed to access the network device for maritime business based on the first information and the second information.

4. The method according to claim 3, characterized in that, The first information is information used to indicate whether the first network allows access for maritime business. The first network includes at least one of the following: the network selected by the terminal, the network registered by the terminal, and a network equivalent to the network registered by the terminal.

5. The method according to claim 4, characterized in that, The network includes at least one of a Public Land Mobile Network (PLMN) and a Non-Public Network (NPN).

6. The method according to any one of claims 3-5, characterized in that, The step of determining whether the terminal is allowed to access the network device for maritime business based on the first information includes: If the value corresponding to the first information is a first preset value, then it is determined that the terminal is not allowed to access the network device for maritime business. When the value corresponding to the first information is the first preset value, it is used to indicate that the network device does not allow access for maritime business. If the value corresponding to the first information is the second preset value, then it is determined that the terminal is allowed to access the network device for maritime business. When the value corresponding to the first information is the second preset value, it is used to indicate that the network device allows access for maritime business.

7. The method according to any one of claims 3-5, characterized in that, The step of determining whether the terminal is allowed to access the network device for maritime business based on the first information and the second information includes: If the value corresponding to the first information is a first preset value or the value corresponding to the second information is a third preset value, then it is determined that the terminal is not allowed to access the network device for maritime business. When the value corresponding to the first information is the first preset value, it is used to indicate that the network device does not allow access for maritime business. When the value corresponding to the second information is the third preset value, it is used to indicate that the network device does not allow NTN access. If the value corresponding to the first information is a second preset value and the value corresponding to the second information is a fourth preset value, then it is determined that the terminal is allowed to access the network device for maritime business. When the value corresponding to the first information is the second preset value, it is used to indicate that the network device allows access for maritime business. When the value corresponding to the second information is the fourth preset value, it is used to indicate that the network device allows NTN access.

8. The method according to claim 1, characterized in that, The system information includes a system information block SIB1. The step of determining whether the network device allows the terminal to access the network device for maritime services based on whether the system information includes first information includes: Based on whether SIB1 includes the first information, determine whether the network device allows the terminal to access the network device for maritime business.

9. The method according to any one of claims 1-5, characterized in that, The method further includes: A third message is sent to the network device, the third message being used to instruct the terminal to request access to maritime services.

10. The method according to claim 9, characterized in that, Sending third information to the network device includes: The network device sends Radio Resource Control (RRC) information, which includes at least one of RRC connection establishment request information and RRC connection recovery request information, and the RRC information carries the third information.

11. The method according to any one of claims 1-5, characterized in that, The method further includes: A fourth message is sent to the network device, the fourth message being used to indicate that the terminal has maritime capabilities.

12. The method according to claim 11, characterized in that, Sending the fourth information to the network device includes: The terminal capability information is sent to the network device, and the terminal capability information carries the fourth information.

13. A communication method, characterized in that, Applied to network devices, the method includes: Broadcast system information, the system information including first information, the first information being used to indicate whether the network device allows access for maritime business.

14. The method according to claim 13, characterized in that, The value corresponding to the first information is a second preset value. When the value corresponding to the first information is the second preset value, it is used to indicate that the network device allows access for maritime business.

15. The method according to claim 13, characterized in that, The value corresponding to the first information is a first preset value. When the value corresponding to the first information is the first preset value, it is used to indicate that the network device does not allow access for maritime business.

16. The method according to claim 13, characterized in that, The first information is information used to indicate to the second network that access for maritime business is permitted.

17. The method according to any one of claims 13-16, characterized in that, The method further includes: The terminal receives third information from a terminal that supports non-terrestrial network (NTN) connections and has maritime capabilities. The third information is used to instruct the terminal to request access to maritime services.

18. The method according to claim 17, characterized in that, The receipt of third information from the terminal includes: The terminal receives Radio Resource Control (RRC) information, which includes at least one of RRC connection establishment request information and RRC connection recovery request information, and the RRC information carries the third information.

19. The method according to any one of claims 13-16, characterized in that, The method further includes: The terminal receives a fourth piece of information, which supports non-terrestrial network (NTN) connectivity and has maritime capabilities. The fourth piece of information is used to indicate that the terminal has maritime capabilities.

20. The method according to claim 19, characterized in that, The receipt of the fourth information from the terminal includes: Receive terminal capability information from the terminal, wherein the terminal capability information carries the fourth information.

21. A communication method, characterized in that, include: Network equipment broadcasts system information; The terminal receives system information from the network device and determines whether the terminal is allowed to access the network device for maritime services based on whether the system information includes first information. The terminal supports non-terrestrial network (NTN) connections and has maritime capabilities. The first information is used to indicate whether the network device allows access for maritime services.

22. A communication device, characterized in that, The device is applied to a terminal that supports non-terrestrial network (NTN) connectivity and has maritime capabilities; the device includes: The receiving module is used to receive system information from network devices; The processing module is used to determine whether the terminal is allowed to access the network device for maritime business based on whether the system information includes first information, wherein the first information is used to indicate whether the network device allows access for maritime business.

23. A communication device, characterized in that, Applied to network devices, the device includes: The transmitting module is used to broadcast system information, which includes first information used to indicate whether the network device allows access for maritime business.

24. A terminal, characterized in that, include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory to implement the method as described in any one of claims 1-12.

25. A network device, characterized in that, include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory to implement the method as described in any one of claims 13-20.

26. A communication system, characterized in that, This includes terminals and network equipment; among which, The terminal is used to implement the method as described in any one of claims 1-11; The network device is used to implement the method as described in any one of claims 12-19.

27. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method as described in any one of claims 1-21.

28. A computer program product, characterized in that, Includes a computer program that, when executed by a processor, implements the method of any one of claims 1-21.

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