Network access method, apparatus, gateway station and network device

Abstract

The application provides a network access method and device, a gateway station and network equipment. The method comprises the following steps: the gateway station acquires PLMN information broadcast by the network equipment, the PLMN information comprises one or more PLMN information corresponding to the gateway station allowed to access the network equipment; in the case that the PLMN information contains first PLMN information corresponding to the gateway station, a random access process is initiated to the network equipment. The method for the gateway station to access the network combines the characteristics of the satellite communication system on-board base station and the light gateway station, is reformed, can comply with the existing network specification to the greatest extent, has strong compatibility and is convenient to expand.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication technology, and in particular to a network access method and device, a gateway station and a network device. BACKGROUND

[0002] Non-Terrestrial Network (NTN) related specifications have been released, and the integration of satellite and mobile communication technology is the future development trend of mobile communication. Some special users in the satellite system need to build their own dedicated core network, and the data interaction between these dedicated core networks and the base stations on the satellite needs to use the feeder link between the gateway station and the satellite to achieve it.

[0003] In a satellite communication system, there are basic application modes such as static communication and mobile communication. Mobile communication refers to the establishment of a communication link between a satellite and a mobile terminal that is frequently disconnected within a short period of time to achieve the communication needs of the mobile terminal. This mode is suitable for scenarios where mobile terminals frequently change, such as vehicle communication, aviation communication, and maritime communication. Mobile communication requires the establishment of a mobile terminal device. In a satellite system, a light gateway station can be used to simulate a mobile terminal to access and establish a feeder link, and then the private network can obtain services through this feeder link.

[0004] In the prior art, satellite systems using current wireless communication technology do not have a corresponding light gateway station access scheme, and other network access methods are not suitable for the application scenario of light gateway station access to the network, and the security of the light gateway station access process cannot be guaranteed. SUMMARY

[0005] The purpose of the present application is to provide a network access method, device, gateway station and network device to solve the security problem of the light gateway station access to the network.

[0006] Embodiments of the present application provide a network access method, comprising:

[0007] The gateway station acquires Public Land Mobile Network (PLMN) information broadcast by a network device, wherein the PLMN information includes one or more PLMN information corresponding to the gateway station allowed to access the network device;

[0008] In the case where the PLMN information contains first PLMN information corresponding to the gateway station, a random access process is initiated to the network device.

[0009] Optionally, the acquisition of the Public Land Mobile Network (PLMN) information broadcast by the network device comprises:

[0010] receiving a system information block (SIB) broadcast by the network device;

[0011] reading the SIB to obtain PLMN information.

[0012] Optionally, in a case where the PLMN information contains first PLMN information corresponding to the gateway station, initiating a random access procedure with the network device, including:

[0013] in a case where the PLMN information contains first PLMN information corresponding to the gateway station, sending a radio resource control (RRC) message to the network device in the random access procedure, the RRC message including identity information corresponding to the gateway station.

[0014] Optionally, the method further includes:

[0015] in a case where the random access is completed, sending an RRC setup complete message to the network device, the RRC setup complete message including information of a PLMN selected by the gateway station.

[0016] Optionally, the information of the PLMN selected by the gateway station indicates an index value of the first PLMN information corresponding to the gateway station in the PLMN information.

[0017] Optionally, the RRC setup complete message further includes a check code.

[0018] Embodiments of the present application provide a network access method, including:

[0019] a network device acquires whitelist information, the whitelist information including PLMN information corresponding to one or more gateway stations allowed to access the network device;

[0020] the network device broadcasts the PLMN information;

[0021] the network device and a gateway station initiating a random access perform a random access procedure.

[0022] Optionally, the acquiring of the whitelist information includes:

[0023] receiving whitelist information sent by a satellite control function (SCF);

[0024] wherein the whitelist information further includes:

[0025] identity information corresponding to a gateway station allowed to access the network device;

[0026] Check code.

[0027] Optionally, the broadcasting the PLMN information comprises:

[0028] broadcasting a SIB, the SIB carrying the PLMN information.

[0029] Optionally, the method further comprises:

[0030] sending a response message to the SCF, the response message comprising a reporting result of the whitelist information.

[0031] Optionally, performing a random access procedure with a gateway station initiating the random access comprises:

[0032] receiving an RRC message sent by the gateway station in the random access procedure, the RRC message comprising identity information of the gateway station.

[0033] Optionally, the method further comprises:

[0034] receiving an RRC setup complete message sent by the gateway station, the RRC setup complete message comprising information of a PLMN selected by the gateway station.

[0035] Optionally, the information of the PLMN selected by the gateway station indicates an index value of the first PLMN information corresponding to the gateway station in the PLMN information.

[0036] Optionally, the method further comprises:

[0037] determining, according to the identity information of the gateway station and the information of the PLMN selected by the gateway station, that the information of the PLMN selected by the gateway station indicates the index value of the first PLMN information corresponding to the gateway station in the PLMN information, and confirming that the gateway station accesses the network device.

[0038] Optionally, the RRC setup complete message further comprises a check code.

[0039] The method further comprises:

[0040] comparing the check code with a check code in the whitelist information.

[0041] if the check code is the same as the check code in the whitelist information, confirming that the gateway station accesses the network device.

[0042] if the check code is different from the check code in the whitelist information, initiating an RRC connection release procedure.

[0043] Embodiments of the present application provide a gateway station, comprising: a memory, a transceiver, a processor:

[0044] a memory for storing a computer program; a transceiver for receiving and sending data under the control of the processor; a processor for reading the computer program in the memory and performing the following operations:

[0045] obtaining public land mobile network (PLMN) information broadcast by a network device, the PLMN information comprising one or more PLMN information corresponding to gateway stations allowed to access the network device;

[0046] in a case where the PLMN information comprises first PLMN information corresponding to the gateway station, initiating a random access procedure to the network device.

[0047] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0048] receiving a system information block (SIB) broadcast by the network device;

[0049] reading the SIB to obtain the PLMN information.

[0050] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0051] in a case where the PLMN information comprises first PLMN information corresponding to the gateway station, sending an RRC message to the network device in the random access procedure, the RRC message comprising identity information corresponding to the gateway station.

[0052] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0053] in a case where the random access is completed, sending an RRC setup complete message to the network device, the RRC setup complete message comprising information of a PLMN selected by the gateway station.

[0054] Optionally, the information of the PLMN selected by the gateway station indicates an index value of the first PLMN information corresponding to the gateway station in the PLMN information.

[0055] Optionally, the RRC setup complete message further comprises a check code.

[0056] Embodiments of the present application provide a network device, comprising: a memory, a transceiver, a processor:

[0057] a memory for storing a computer program; a transceiver for receiving and sending data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

[0058] acquiring whitelist information, the whitelist information comprising PLMN information corresponding to one or more gateway stations allowed to access the network device;

[0059] broadcasting, by the network device, the PLMN information;

[0060] performing, by the network device, a random access procedure with a gateway station initiating the random access.

[0061] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0062] receiving whitelist information sent by a satellite control function (SCF);

[0063] The whitelist information further comprises:

[0064] identity information corresponding to the gateway stations allowed to access the network device;

[0065] a check code.

[0066] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0067] broadcasting a system information block (SIB) carrying the PLMN information.

[0068] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0069] sending a response message to the SCF, the response message comprising a reporting result of the whitelist information.

[0070] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0071] receiving an RRC message sent by the gateway station in a random access procedure, the RRC message comprising identity information corresponding to the gateway station.

[0072] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0073] receiving an RRC setup complete message sent by the gateway station, the RRC setup complete message comprising information of a PLMN selected by the gateway station.

[0074] Optionally, the information of the PLMN selected by the gateway station indicates that the index value of the first PLMN information corresponding to the gateway station in the PLMN information.

[0075] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0076] According to the identity information corresponding to the gateway station and the information of the PLMN selected by the gateway station, if it is determined that the information of the PLMN selected by the gateway station indicates the index value of the first PLMN information corresponding to the gateway station in the PLMN information, the gateway station is confirmed to access the network device.

[0077] Optionally, the RRC establishment completion message further includes a check code.

[0078] The processor is configured to read the computer program in the memory and perform the following operations:

[0079] The check code is compared with the check code in the whitelist information.

[0080] If the check code is the same as the check code in the whitelist information, the gateway station is confirmed to access the network device.

[0081] If the check code is different from the check code in the whitelist information, an RRC connection release process is initiated.

[0082] Embodiments of the present application provide a network access device, applied to a gateway station, the device comprising:

[0083] A first obtaining unit is configured to obtain public land mobile network (PLMN) information broadcast by a network device, the PLMN information including one or more PLMN information corresponding to gateway stations allowed to access the network device;

[0084] A first processing unit is configured to initiate a random access process to the network device if the PLMN information contains first PLMN information corresponding to the gateway station.

[0085] Embodiments of the present application provide a network access device, applied to a network device, the device comprising:

[0086] A second obtaining unit is configured to obtain whitelist information, the whitelist information including one or more PLMN information corresponding to gateway stations allowed to access the network device;

[0087] A broadcasting unit is configured to broadcast the PLMN information.

[0088] A second processing unit is configured to perform a random access process between the network device and the gateway station initiating the random access.

[0089] The embodiment of the present application provides a processor-readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the steps of the network access method.

[0090] The embodiment of the present application has the following beneficial effects:

[0091] In the embodiment of the present application, the gateway station acquires the PLMN information broadcast by the network device, and if it is determined that the PLMN information contains the PLMN information of the gateway station itself, the gateway station can initiate a random access process to the network device. The PLMN information is the PLMN information corresponding to the gateway station allowed to access the network device. The network access method of the gateway station in the present application is reformed in combination with the characteristics of the satellite communication system on-board base station and the light gateway station, can comply with the existing network specification to the greatest extent, has strong compatibility, and is convenient to expand. BRIEF DESCRIPTION OF DRAWINGS

[0092] Figure 1 A schematic diagram of a satellite communication system architecture representing a regenerative mode;

[0093] Figure 2 One of the flowcharts of the network access method of the embodiment of the present application;

[0094] Figure 3 A schematic diagram of a communication architecture among the network device, the SCF and the gateway station of the embodiment of the present application;

[0095] Figure 4 The second flowchart of the network access method of the embodiment of the present application;

[0096] Figure 5 The third flowchart of the network access method of the embodiment of the present application;

[0097] Figure 6 The fourth flowchart of the network access method of the embodiment of the present application;

[0098] Figure 7 One of the structural schematic diagrams of the network access device of the embodiment of the present application;

[0099] Figure 8 The second structural schematic diagram of the network access device of the embodiment of the present application;

[0100] Figure 9 The structural schematic diagram of the gateway station of the embodiment of the present application;

[0101] Figure 10 The structural schematic diagram of the network device of the embodiment of the present application. DETAILED DESCRIPTION

[0102] In order to make the technical problems, technical solutions and advantages solved in the present application clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help a comprehensive understanding of the embodiments of the present application. Therefore, it should be apparent to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of known functions and configurations are omitted for clarity and conciseness.

[0103] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0104] In various embodiments of the present application, it should be understood that the size of the serial number of the following processes does not mean the order of execution, and the execution order of the processes should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0105] In the embodiments of the present application, the term "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. The character " / " generally represents an "or" relationship between the associated objects before and after it.

[0106] In the embodiments of the present application, the term "a plurality of" means two or more, and other quantifiers are similar.

[0107] The technical solutions in the embodiments of the present application will be described clearly and completely in the following description of the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0108] In the description of the embodiments of the present application, some concepts used in the following description are first explained.

[0109] A low earth orbit satellite (LEO, Low Earth Orbit Satellite) communication system includes user terminals (User Equipment, UE), satellites, gateway stations, data networks, etc., wherein the wireless link between the user terminal and the satellite is called the service link (Service Link), also known as the user link, the wireless link between the satellite and the gateway station is called the feeder link (Feeder Link), and the inter-satellite link (Inter-Satellite Link, ISL) is the inter-satellite link. The architecture of the satellite communication system in the regeneration mode is as shown in Figure 1 .

[0110] Embodiments of the present application provide a network access method and device, a gateway station and a network device, to solve the security problem in the network access process of a light gateway station.

[0111] The method and device are based on the same application concept, and since the principles of the method and device for solving the problem are similar, the implementation of the device and the method can be mutually referred to, and the repeated parts will not be described again.

[0112] As shown in Figure 2 Embodiments of the present application provide a network access method, applied to a gateway station, and specifically comprising the following steps:

[0113] Step 201: The gateway station acquires public land mobile network (PLMN) information broadcast by a network device, wherein the PLMN information includes one or more PLMN information corresponding to the gateway station allowed to access the network device.

[0114] Step 202: In the case where the PLMN information contains first PLMN information corresponding to the gateway station, initiate a random access process to the network device.

[0115] In this embodiment, the gateway station can be a light gateway station (light-GW), and the network device can be a satellite-based base station. The management module can configure the identity of the gateway station and set the identity of the light gateway station. After modifying the identity, the management module initiates a whitelist update process to the SCF, and the SCF reports the received whitelist to the network device for registration. The whitelist defines a list of light gateway stations allowed to access the network device, and the whitelist can indicate the PLMN information (light-GW-PLMN-ID) corresponding to each light gateway station, the identity information (such as light-GW-ID) corresponding to each light gateway station, and the verification code (Ver-Code).

[0116] Wherein, the light-GW-PLMN-ID is a PLMN corresponding to the light gateway station, and is globally unique; the light-GW-ID is a light gateway station identifier, and is globally unique; and the Ver-Code is used for verifying whether the identity of the light gateway station is legal.

[0117] After the network device obtains the whitelist, the network device can broadcast the PLMN information in the whitelist. After the gateway station receives the broadcasted PLMN information, the gateway station determines whether the PLMN information contains the PLMN information (i.e., the first PLMN information) corresponding to the gateway station. If the PLMN information contains the PLMN information corresponding to the gateway station, it indicates that the network device has obtained the whitelist, i.e., has obtained the information of the light gateway station allowed to access. Then, the gateway station can randomly initiate a random access process according to requirements. The communication architecture among the network device, the SCF, and the gateway station is as shown in FIG. 2. Figure 3

[0118] In the embodiment of the present application, the gateway station obtains the PLMN information broadcasted by the network device, and if it is determined that the PLMN information contains the PLMN information corresponding to the gateway station, the gateway station can initiate a random access process to the network device. The PLMN information is the PLMN information corresponding to the gateway station allowed to access the network device. The method for the gateway station to access the network in the present application is reformed in combination with the characteristics of the satellite communication system on-board base station and the light gateway station, can comply with the existing network specification to the greatest extent, has strong compatibility, and is convenient to expand.

[0119] As an optional embodiment, the obtaining of the public land mobile network (PLMN) information broadcasted by the network device comprises the following steps.

[0120] Receiving a system information block (SIB) broadcasted by the network device; reading the SIB to obtain the PLMN information.

[0121] In this embodiment, the network device can broadcast the PLMN information corresponding to the light gateway station through the SIB message, i.e., broadcast the light-GW-PLMN-ID parameter in the whitelist received from the SCF before. Optionally, the SIB is SIB1.

[0122] As an optional embodiment, the initiating of the random access process to the network device in the case where the PLMN information contains the first PLMN information corresponding to the gateway station comprises the following steps.

[0123] In the case where the PLMN information contains the first PLMN information corresponding to the gateway station, sending a radio resource control (RRC) message to the network device in the random access process, wherein the RRC message comprises the identity information corresponding to the gateway station.

[0124] ​In this embodiment, the light gateway station analyzes whether the light-GW-PLMN-ID value is contained in the PLMN information of the SIB by reading the SIB, and if the light-GW-PLMN-ID value is contained, it indicates that the network device has obtained the whitelist. The light gateway station can initiate a random access process at any time as needed, and send a message 1 (Msg1), i.e., a preamble, to the network device. If the PLMN information in the SIB does not contain the light-GW-PLMN-ID value corresponding to the light gateway station, the light gateway station should wait. It should be noted that a normal UE should not and cannot select the light-GW-PLMN-ID to access, and the network corresponding to the light gateway station is a private network.

[0125] The network device sends a Msg2 to the gateway station, allocates uplink resources to the gateway station, and can inform the gateway station through a RAR message. The gateway station sends a Msg3 to the network device, which contains the first uplink RRC message sent by the gateway station to the network device, and the RRC message includes the identity information (i.e., light-GW-ID) of the gateway station. It should be noted that the network device cannot identify whether the gateway station is a normal user or a light gateway station user at the current stage, even if the light-GW-ID is carried in the RRC message, it cannot be determined that the gateway station is a light gateway station. The network device sends a Msg4 to the gateway station.

[0126] Optionally, the method further includes: in the case where the random access is completed, sending an RRC setup completion message to the network device, the RRC setup completion message including information of a PLMN selected by the gateway station.

[0127] Optionally, the information of the PLMN selected by the gateway station indicates an index value of the first PLMN information corresponding to the gateway station in the PLMN information.

[0128] In this embodiment, after completing the random access process, the gateway station sends an RRC setup completion message (RRCSetupComplete) to the network device, which carries the information of the PLMN selected by the gateway station. The index value of the PLMN corresponding to the gateway station in the received PLMN information can be carried in the RRC setup completion message, and the normal user cannot set this value, so the network device can determine that this time of access is a "special user" of the light gateway station according to the index value.

[0129] It should be noted that in an implementation, the light gateway station can simulate a terminal to access the network device, and only after successful access does it play the role of a gateway station, so from the perspective of the network device, the network device can consider it as a "special terminal".

[0130] Optionally, the RRC setup complete message further comprises a verification code. The network device compares the received verification code with the verification code stored in the whitelist, and if they are the same, it indicates that the current access is a light gateway station; if they are different, it indicates that the current access is not a light gateway station, and at this time, the RRC connection release process can be initiated.

[0131] The implementation process of the network access method is illustrated below.

[0132] As shown in Figure 4 and Figure 5 , taking the network device as a satellite base station and the gateway station as a light gateway station as an example, an external module (such as a management module) configures the identity of the gateway station and sets the identity of the light gateway station. After the gateway station modifies the identity, the external module initiates a whitelist update process to the SCF, and the SCF updates the whitelist list. The method further comprises:

[0133] Step 41: The SCF reports the registration whitelist to the base station.

[0134] The SCF sends a whitelist transmission request message (Whitelist Transfer Request) to the base station, and the request message contains the whitelist. The whitelist is used to indicate the information of one or more light gateway stations allowed to access the base station, and the information includes: light-GW-ID, Ver-Code, and light-GW-PLMN-ID of each light gateway station.

[0135] (1) light-GW-ID is the identity of the light gateway station, which is globally unique;

[0136] (2) Ver-Code is a verification code used to verify whether the identity of the light gateway station is legal;

[0137] (3) light-GW-PLMN-ID is the PLMN corresponding to the light gateway station, which is globally unique;

[0138] Step 42: The base station sends a response message to the SCF to feed back the reporting result of the whitelist.

[0139] In this step, the base station can send a whitelist transmission response (Whitelist Transfer Response) message to the SCF in response, and the message contains the result (success, failure), and in the case of failure, the failure reason should be included.

[0140] Step 43: The base station modifies the SIB1 message.

[0141] The base station broadcasts the PLMN identity corresponding to the light gateway station through the SIB1 message, i.e. the light-GW-PLMN-ID parameter in the whitelist received from the SCF.

[0142] Step 44: The light gateway station initiates a random access process and sends a preamble.

[0143] The light gateway station analyzes whether the light-GW-PLMN-ID value of itself is contained in the PLMN information of the SIB1 by reading the SIB1. If it is contained, it indicates that the base station has obtained the whitelist and can support the access of the light gateway station. The light gateway station can initiate a random access process at any time as needed and send Msg1, i.e. a preamble, to the base station.

[0144] If there is no corresponding light-GW-PLMN-ID value in the PLMN information in the SIB1, the light gateway station should wait. The normal UE should not and cannot (the light gateway station is behind a private network) select the light-GW-PLMN-ID to access.

[0145] Step 45: Msg2.

[0146] The base station sends Msg2 to the light gateway station that initiates the random access and allocates uplink resources for it, which can be informed to the light gateway station through the RAR message.

[0147] Step 46: Msg3.

[0148] Msg3 contains the first uplink RRC message sent by the light gateway station to the base station, which provides the "InitialUE-Identity" parameter to identify the gateway station identity, and the parameter value is set as light-GW-ID.

[0149] After the base station receives the RRC message, it cannot identify whether the current access is a normal user or a light gateway station user in the current stage (setting different value modes helps to distinguish and judge, which depends on the specific design, but even if the value of "InitialUE-Identity" is equal to light-GW-ID, it cannot be judged that the current access is a light gateway station, because the identities of the normal user and the light gateway station are allocated by different entities, and there is a probability of conflict).

[0150] Step 47: Msg4.

[0151] The base station sends Msg4 to the UE.

[0152] Step 48: RRC establishment is completed.

[0153] In this step, the lightweight gateway station sends the second uplink RRC message to the satellite base station: the RRCSetupComplete message. The “selectedPLMN-Identity” parameter in the message is set to the index value of light-GW-PLMN-ID in the PLMN information (ordinary users cannot set this value). At the same time, the “s-TMSI-Part2” parameter is set to Ver-Code.

[0154] The base station analyzes and processes the received parameters, i.e., verifies the gateway station. If the verification is successful, the subsequent process establishes a Data Radio Bearer (DRB) between the light gateway station and the base station. Specifically, if the value of the "selectedPLMN-Identity" parameter is equal to the index value of light-GW-PLMN-ID in the PLMN information, it is considered that the access is from a light gateway station. Then, the Ver-Code received in the RRC message is compared with the Ver-Code stored in the whitelist. If they are the same, it indicates that the access is from a light gateway station user; if they are different, it indicates that the access is not from a light gateway station user, and at this time, the RRC connection release process can be initiated.

[0155] like Figure 5 As shown, after the SCF adds a whitelist to the base station, the base station broadcasts the PLMN ID of the light gateway station through SIB1; the light gateway station reads the system message and analyzes the parameters, finding its own PLMN ID; the base station verifies the light gateway station, and if the verification is successful, a DRB is established between the light gateway station and the base station, meaning the light gateway station accesses the base station; after establishing the data radio bearer between the light gateway station and the base station, the terminal in private network 2 (PLMN1) accesses the base station, and the base station routes it to the light gateway station; the satellite's special payload data is routed to private network 1 through the route between the base station and the light gateway station.

[0156] In this embodiment, the base station prohibits lightweight gateway stations from providing services until it receives the whitelist reported by the SCF. Once the whitelist is received, the base station adjusts its beam (or the beam control module adjusts it) to point at the lightweight gateway station and broadcasts relevant parameters. When a lightweight gateway station accesses the network, the base station verifies it to prevent unauthorized access.

[0157] Before the access of the gateway station, the light gateway station is configured by other ways (for example, by the management module) first, and a new identity of the light gateway station is set; after the light gateway station successfully modifies the identity, the management module initiates a whitelist updating process to the SCF, and the whitelist defines a list of light gateway stations allowed to access the base station; the SCF uploads the received whitelist to the satellite base station; and the satellite base station broadcasts the PLMN of the light gateway station. After the above configuration process is completed, the light gateway station initiates an access process using the new identity light-GW-ID, and reports a verification code Ver-Code, while indicating the selected light gateway station PLMN. The base station verifies the light gateway station according to the whitelist information and completes the subsequent access process, and the light gateway station not in the whitelist is prohibited to access.

[0158] In the embodiment of the application, the gateway station obtains the PLMN information broadcast by the network device, and if it is determined that the PLMN information contains the PLMN information of the gateway station itself, the gateway station can initiate a random access process to the network device. The PLMN information is the PLMN information corresponding to the gateway station allowed to access the network device. The method for the gateway station to access the network in the application is reformed in combination with the characteristics of the satellite communication system satellite base station and the light gateway station, can comply with the existing network specification to the greatest extent, has strong compatibility, is easy to expand and simple and feasible.

[0159] As shown in Figure 6 The embodiment of the application also provides a network access method, applied to a network device, and the method comprises the following steps:

[0160] Step 601: The network device obtains whitelist information, and the whitelist information comprises one or more PLMN information corresponding to the gateway station allowed to access the network device;

[0161] Step 602: The network device broadcasts the PLMN information;

[0162] Step 603: The network device and the gateway station initiating the random access perform a random access process.

[0163] In the embodiment, the network device can be a satellite base station. The management module can configure the identity of the gateway station, and set the identity of the light gateway station. After the identity of the gateway station is modified, the management module initiates a whitelist updating process to the SCF, and the SCF uploads the received whitelist to the network device. The whitelist defines a list of light gateway stations allowed to access the network device, and the whitelist can indicate the PLMN information (light-GW-PLMN-ID) corresponding to each light gateway station. The light-GW-PLMN-ID is the PLMN corresponding to the light gateway station, and is globally unique.

[0164] After the network device acquires the white list, the network device can broadcast the PLMN information in the white list. After the gateway station receives the broadcasted PLMN information, the gateway station determines whether the PLMN information contains the PLMN information of the gateway station. If the PLMN information contains the PLMN information of the gateway station, it indicates that the network device has obtained the white list, that is, the information of the light gateway station allowed to access is known. Then, the gateway station can randomly initiate a random access process according to a requirement. The network device and the gateway station perform a random access procedure.

[0165] In the embodiment of the present application, the network device acquires a white list containing information of one or more gateway stations allowed to access, and broadcasts PLMN information in the white list. After the gateway station receives the PLMN information, if it is determined that the PLMN information contains the PLMN information of the gateway station, the gateway station can initiate a random access process to the network device. The network device and the gateway station perform a random access procedure. The method for the gateway station to access the network in the present application combines the characteristics of the satellite communication system on-board base station and the light gateway station, and is modified to comply with the existing network specification to the greatest extent, has strong compatibility, and is easy to expand.

[0166] Optionally, the acquiring the white list information comprises: receiving the white list information sent by a satellite control function (SCF).

[0167] The white list information further comprises:

[0168] identity information of the gateway station allowed to access the network device;

[0169] a verification code.

[0170] In this embodiment, after the gateway station is configured with the identity, the management module initiates a white list update process to the SCF, and the SCF reports the received white list to the network device. The white list can indicate PLMN information (light-GW-PLMN-ID) corresponding to each light gateway station, identity information (light-GW-ID) corresponding to each light gateway station, and a verification code (Ver-Code). The light-GW-ID is a light gateway station identifier, which is globally unique. The Ver-Code is used to verify whether the identity of the light gateway station is legal.

[0171] Optionally, the broadcasting the PLMN information comprises: broadcasting a system information block (SIB), and the SIB carries the PLMN information.

[0172] In this embodiment, the network device can broadcast the PLMN information corresponding to the light gateway station through a SIB message, that is, broadcast the light-GW-PLMN-Identity parameter in the white list received from the SCF through the SIB message. Optionally, the SIB is a SIB1.

[0173] Optionally, the method further includes: sending a response message to the SCF, the response message including a reporting result of the whitelist information. In this embodiment, the network device feeds back the reporting result of the whitelist to the SCF.

[0174] As an optional embodiment, the random access procedure is performed between the network device and the gateway station that initiates the random access, including:

[0175] Receiving an RRC message sent by the gateway station in the random access procedure, the RRC message including identity information corresponding to the gateway station.

[0176] In this embodiment, the light gateway station analyzes whether the light-GW-PLMN-ID value is included in the PLMN information of the SIB by reading the SIB, and if the light-GW-PLMN-ID value is included, it indicates that the network device has obtained the whitelist. The light gateway station can initiate the random access procedure at any time as needed and send Msg1 to the network device. If the PLMN information in the SIB does not include the light-GW-PLMN-ID value corresponding to the light gateway station, the light gateway station should wait. It should be noted that the ordinary UE should not and cannot select the light-GW-PLMN-ID to access, and the network corresponding to the light gateway station is a private network.

[0177] The network device sends Msg2 to the gateway station to allocate uplink resources to the gateway station, which can be informed to the gateway station through the RAR message. The gateway station sends Msg3 to the network device, which contains the first uplink RRC message sent by the gateway station to the network device, and the RRC message includes the identity information (i.e. light-GW-ID) corresponding to the gateway station. It should be noted that the current stage cannot identify whether the gateway station is an ordinary user or a light gateway station user, even if the light-GW-ID is carried in the RRC message, it cannot be judged that the gateway station is a light gateway station. The network device sends Msg4 to the gateway station.

[0178] Optionally, the method further includes: receiving an RRC setup complete message sent by the gateway station, the RRC setup complete message including information of a PLMN selected by the gateway station.

[0179] Optionally, the information of the PLMN selected by the gateway station indicates an index value of the first PLMN information corresponding to the gateway station in the PLMN information.

[0180] Optionally, the method further includes:

[0181] According to the identity information corresponding to the gateway station and the information of the PLMN selected by the gateway station, if it is determined that the information of the PLMN selected by the gateway station indicates that the index value of the first PLMN information corresponding to the gateway station is in the PLMN information, it is confirmed that the gateway station accesses the network device.

[0182] In this embodiment, after completing the random access process, the gateway station sends an RRC setup complete message (RRCSetupComplete) to the network device, and the message carries the information of the PLMN selected by the gateway station. The index value of the PLMN corresponding to the gateway station in the received PLMN information can be carried in the RRC setup complete message, and the value cannot be set by a common user, so the network device can determine that the current access is a light gateway station rather than a common user according to the index value.

[0183] Optionally, the RRC setup complete message further includes a verification code.

[0184] The method further includes:

[0185] comparing the verification code with the verification code in the whitelist information;

[0186] If the verification code is the same as the verification code in the whitelist information, it is confirmed that the gateway station accesses the network device.

[0187] If the verification code is different from the verification code in the whitelist information, an RRC connection release process is initiated.

[0188] In this embodiment, the network device verifies the gateway station, compares the received Ver-Code with the Ver-Code stored in the whitelist, and if they are the same, it indicates that the current access is a light gateway station; if they are different, it indicates that the current access is not a light gateway station, and at this time, an RRC connection release process can be initiated.

[0189] The implementation process of the network access method is described in detail in Figure 4 and Figure 5 , which will not be described here.

[0190] In the embodiments of the present application, the network device acquires a whitelist containing information of one or more allowed gateway stations, and broadcasts the PLMN information in the whitelist. After receiving the PLMN information, if the gateway station determines that the PLMN information in the PLMN information contains the PLMN information of the gateway station itself, the gateway station can initiate a random access process to the network device, and the network device and the gateway station perform a random access process. The network access method of the gateway station in the present application is improved in combination with the characteristics of the satellite communication system on-board base station and the light gateway station, can comply with the existing network specification to the greatest extent, has strong compatibility, is easy to expand and simple to implement.

[0191] The above embodiments introduce the network access method of the present application, and the following embodiments further introduce the corresponding device in combination with the drawings.

[0192] Specifically, as shown in the figure, Figure 7 The present embodiment provides a network access device 700 applied to a gateway station, which comprises:

[0193] A first obtaining unit 710 is configured to obtain public land mobile network (PLMN) information broadcast by a network device, wherein the PLMN information comprises one or more PLMN information corresponding to gateway stations allowed to access the network device;

[0194] A first processing unit 720 is configured to initiate a random access procedure to the network device in a case where the PLMN information comprises first PLMN information corresponding to the gateway station.

[0195] Optionally, the first obtaining unit is specifically configured to:

[0196] receive system information block (SIB) broadcast by the network device;

[0197] read the SIB to obtain the PLMN information.

[0198] Optionally, the first processing unit is specifically configured to:

[0199] in a case where the PLMN information comprises first PLMN information corresponding to the gateway station, send a radio resource control (RRC) message to the network device in the random access procedure, wherein the RRC message comprises identity information corresponding to the gateway station.

[0200] Optionally, the device further comprises:

[0201] A first sending unit is configured to send an RRC setup complete message to the network device in a case where the random access is completed, wherein the RRC setup complete message comprises information of a PLMN selected by the gateway station.

[0202] Optionally, the information of the PLMN selected by the gateway station indicates an index value of the first PLMN information corresponding to the gateway station in the PLMN information.

[0203] Optionally, the RRC setup complete message further comprises a check code.

[0204] It should be noted that the above device provided by the present embodiment can realize all the method steps achieved by the above method embodiments applied to the gateway station, and achieve the same technical effects, and thus the same parts and beneficial effects of the method embodiments will not be described in detail.

[0205] Specifically, as shown in the following Figure 8 The embodiment of the present application provides a network access device 800, which is applied to a network device and comprises:

[0206] A second obtaining unit 810 is configured to obtain whitelist information, wherein the whitelist information comprises PLMN information corresponding to one or more gateway stations allowed to access the network device.

[0207] A broadcasting unit 820 is configured to broadcast the PLMN information.

[0208] A second processing unit 830 is configured to perform a random access procedure between the network device and a gateway station initiating random access.

[0209] Optionally, the second obtaining unit is specifically configured to:

[0210] receive the whitelist information sent by a satellite control function (SCF).

[0211] The whitelist information further comprises:

[0212] identity information corresponding to the gateway stations allowed to access the network device.

[0213] a check code.

[0214] Optionally, the broadcasting unit is specifically configured to:

[0215] broadcast a system information block (SIB), wherein the SIB carries the PLMN information.

[0216] Optionally, the device further comprises:

[0217] A second sending unit is configured to send a response message to the SCF, wherein the response message comprises a reporting result of the whitelist information.

[0218] Optionally, the second processing unit is specifically configured to:

[0219] receive a radio resource control (RRC) message sent by the gateway station in a random access process, wherein the RRC message comprises identity information corresponding to the gateway station.

[0220] Optionally, the device further comprises a receiving unit configured to receive an RRC setup complete message sent by the gateway station, wherein the RRC setup complete message comprises information of a PLMN selected by the gateway station.

[0221] Optionally, the information of the PLMN selected by the gateway station indicates an index value of first PLMN information corresponding to the gateway station in the PLMN information.

[0222] Optionally, the device further comprises:

[0223] The third processing unit is configured to determine, according to the identity information corresponding to the gateway station and the information of the PLMN selected by the gateway station, whether the information of the PLMN selected by the gateway station indicates that the first PLMN information corresponding to the gateway station is in the index value in the PLMN information, and confirm that the gateway station accesses the network device.

[0224] Optionally, the RRC setup complete message further comprises a check code.

[0225] The apparatus further comprises a checking unit, specifically configured to:

[0226] compare the check code with the check code in the whitelist information.

[0227] If the check code is the same as the check code in the whitelist information, it is confirmed that the gateway station accesses the network device.

[0228] If the check code is different from the check code in the whitelist information, an RRC connection release process is initiated.

[0229] It should be noted that the above apparatus provided by the embodiments of the present application can realize all the method steps achieved by the above method embodiments applied to the network device, and achieve the same technical effects. Therefore, the same parts and beneficial effects of the method embodiments will not be repeated here.

[0230] It should be noted that the division of units in the embodiments of the present application is illustrative, and is only a logical function division. When actually implemented, there can be another division mode. In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0231] The integrated unit, if implemented in the form of a software function unit and sold or used as an independent product, can be stored in a processor-readable storage medium. Based on such an understanding, the technical solutions of the present application, essentially or in part or all or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various other media that can store program codes.

[0232] As shown in Figure 9 The embodiments of the present application also provide a gateway station, including: a memory 920, a transceiver 900, a processor 910; wherein the memory 920 is used for storing a computer program; the transceiver 900 is used for receiving and sending data under the control of the processor 910; and the processor 910 is used for reading the computer program in the memory and performing the following operations:

[0233] obtaining public land mobile network (PLMN) information broadcast by a network device, wherein the PLMN information includes one or more PLMN information corresponding to gateway stations allowed to access the network device;

[0234] in a case where the PLMN information includes first PLMN information corresponding to the gateway station, initiating a random access procedure to the network device.

[0235] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0236] receiving a system information block (SIB) broadcast by the network device;

[0237] reading the SIB to obtain the PLMN information.

[0238] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0239] in a case where the PLMN information includes first PLMN information corresponding to the gateway station, sending a radio resource control (RRC) message to the network device in the random access procedure, wherein the RRC message includes identity information corresponding to the gateway station.

[0240] Optionally, the processor is configured to read a computer program in the memory and perform the following operations:

[0241] In the case of random access completion, an RRC setup complete message is sent to the network device, and the RRC setup complete message includes information of the PLMN selected by the gateway station.

[0242] Optionally, the information of the PLMN selected by the gateway station indicates that an index value of the first PLMN information corresponding to the gateway station in the information of the PLMN.

[0243] Optionally, the RRC setup complete message further includes a check code.

[0244] In the case of random access completion, an RRC setup complete message is sent to the network device, and the RRC setup complete message includes information of the PLMN selected by the gateway station. Figure 9 The bus architecture can include any number of interconnecting buses and bridges, depending on the specific application of the processor 910 and the memory 920 represented by the various circuits of the one or more processors and the memory linked together by the bus architecture. The bus architecture can also link various other circuits such as peripheral devices, voltage stabilizers, and power management circuits, which are well known in the art and thus, not further described herein. The bus interface provides an interface. The transceiver 900 can be a plurality of elements, i.e., including a transmitter and a receiver, providing a means for communicating with various other apparatuses over a transmission medium. The processor 910 is responsible for managing the bus architecture and general processing, and the memory 920 can store data used by the processor 910 in performing operations.

[0245] The processor 910 can be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD), and the processor can also adopt a multi-core architecture.

[0246] It should be noted that the above-mentioned gateway station provided by the embodiments of the present application can implement all the method steps achieved by the above-mentioned method embodiments applied to the gateway station, and achieve the same technical effects. Therefore, the same parts and beneficial effects of the method embodiments in the embodiments will not be described in detail here.

[0247] As Figure 10As shown, the embodiments of the present application also provide a network device, comprising: a memory 1020, a transceiver 1000, a processor 1010; wherein the memory 1020 is configured to store a computer program; the transceiver 1000 is configured to receive and send data under the control of the processor 1010; the processor 1010 is configured to read the computer program in the memory and perform the following operations:

[0248] Obtain whitelist information, wherein the whitelist information comprises PLMN information corresponding to one or more gateway stations allowed to access the network device;

[0249] The network device broadcasts the PLMN information;

[0250] The network device performs a random access procedure with a gateway station initiating random access.

[0251] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0252] Receive the whitelist information sent by a satellite control function (SCF);

[0253] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0254] Identity information corresponding to the gateway station allowed to access the network device;

[0255] A check code.

[0256] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0257] Broadcast a system information block (SIB) carrying the PLMN information.

[0258] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0259] Send a response message to the SCF, wherein the response message comprises a reporting result of the whitelist information.

[0260] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0261] Receive a radio resource control (RRC) message sent by the gateway station in a random access procedure, wherein the RRC message comprises identity information corresponding to the gateway station.

[0262] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0263] Receive the RRC establishment completion message sent by the gateway station, the RRC establishment completion message including: information of the PLMN selected by the gateway station.

[0264] Optionally, the information indication of the PLMN selected by the gateway station is: the index value of the first PLMN information corresponding to the gateway station in the PLMN information.

[0265] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0266] Based on the identity information corresponding to the gateway station and the information of the PLMN selected by the gateway station, if it is determined that the information of the PLMN selected by the gateway station indicates the index value of the first PLMN information corresponding to the gateway station in the PLMN information, then the gateway station is confirmed to be connected to the network device.

[0267] Optionally, the RRC establishment completion message may further include: a verification code;

[0268] The processor is used to read the computer program in the memory and perform the following operations:

[0269] Compare the verification code with the verification code in the whitelist information;

[0270] If the verification code is the same as the verification code in the whitelist information, then the gateway station is confirmed to be connected to the network device.

[0271] If the verification code is different from the verification code in the whitelist information, then the RRC connection release process is initiated.

[0272] Among them, Figure 10 In this context, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits together, represented by one or more processors (processor 1010) and memory (memory 1020). The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 1000 may be multiple elements, including transmitters and transceivers, providing a unit for communicating with various other devices over a transmission medium. The processor 1010 is responsible for managing the bus architecture and general processing, and the memory 1020 may store data used by the processor 1010 during operation.

[0273] The processor 1010 can be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or a complex programmable logic device (CPLD), and can also be implemented in a multi-core architecture.

[0274] It should be noted that the network device provided by the embodiments of the present application can implement all the method steps achieved by the method embodiments applied to the network device and achieve the same technical effects. Therefore, the same parts and beneficial effects of the method embodiments will not be described in detail.

[0275] In addition, the embodiments of the present application also provide a processor readable storage medium having a computer program stored thereon, wherein the program is executed by a processor to implement the steps of the network access method and achieve the same technical effects. To avoid repetition, the same will not be described here. The readable storage medium can be any available medium or data storage device accessible by the processor, including but not limited to magnetic storage (such as floppy disk, hard disk, magnetic tape, magneto-optical disk (MO) and the like), optical storage (such as CD, DVD, BD, HVD and the like), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state disk (SSD) and the like).

[0276] It should be noted that the technical solutions provided by the embodiments of the present application can be applied to various systems, especially 5G systems. For example, the applicable systems can be global system of mobile communication (GSM) systems, code division multiple access (CDMA) systems, wideband code division multiple access (WCDMA) general packet radio service (GPRS) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, long term evolution advanced (LTE-A) systems, universal mobile systems (UMTS), worldwide interoperability for microwave access (WiMAX) systems, 5G new radio (NR) systems, etc. Among these various systems, there are terminal devices and network devices. The system can also include a core network part, such as an evolved packet system (EPS), a 5G system (5GS), etc.

[0277] The terminal device to which the embodiments of the present application relate can refer to a device that provides voice and / or data connectivity to a user, a handheld device having a wireless connection function, or other processing devices connected to a wireless modem, etc. In different systems, the name of the terminal device can also be different, for example, in the 5G system, the terminal device can be called user equipment (User Equipment, UE). The wireless terminal device can communicate with one or more core networks (Core Network, CN) through a radio access network (Radio Access Network, RAN). The wireless terminal device can be a mobile terminal device, such as a mobile phone (also known as a "cellular" phone) and a computer with a mobile terminal device, for example, it can be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a radio access network. For example, personal communication service (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiated Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDA) and the like. The wireless terminal device can also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, a user device, which is not limited in the embodiments of the present application.

[0278] The network device related to the embodiments of the present application can be a base station, which can include multiple cells serving terminals. According to different application scenarios, the base station can also be referred to as an access point, or can be a device in an access network that communicates with wireless terminal devices through one or more sectors over an air interface, or other names. The network device can be used to exchange received air frames and Internet Protocol (IP) packets as a router between wireless terminal devices and the rest of the access network, which can include an Internet Protocol (IP) communication network. The network device can also coordinate the management of the properties of the air interface. For example, the network device related to the embodiments of the present application can be a network device (Base Transceiver Station, BTS) in the Global System for Mobile Communications (GSM) or Code Division Multiple Access (CDMA), or a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (LTE) system, or a 5G base station (gNB) in a next generation system, or a Home evolved Node B (HeNB), a relay node, a femto, a pico, etc., which are not limited in the embodiments of the present application. In some network structures, the network device can include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit can also be geographically separated.

[0279] The network device and the terminal device can each use one or more antennas for multi-input multi-output (MIMO) transmission, which can be single-user MIMO (SU-MIMO) or multiple-user MIMO (MU-MIMO). According to the shape and number of root antenna combinations, the MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, and can also be diversity transmission or precoding transmission or beamforming transmission, etc.

[0280] Those skilled in the art will appreciate that embodiments of the application can be supplied as a method, a system, or a computer program product. Accordingly, the application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the application can take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, and optical storage) embodying computer-usable program code.

[0281] The application is described with reference to the flowcharts and / or block diagrams of the methods, apparatus (systems), and computer program products according to embodiments of the application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, as well as combinations of flows and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer executable instructions. These computer executable instructions can be provided to a processor of a general purpose computer, a special purpose computer, an embedded processor, or other programmable data processing apparatus to produce a machine, so that the instructions, which are executed via the processor of the computer or other programmable data processing apparatus, generate means for implementing the functions specified in one or more flows in the flowcharts and / or one or more blocks in the block diagrams.

[0282] These processor executable instructions can also be stored in a processor readable memory that can direct the computer or other programmable data processing apparatus to work in a specific manner, so that the instructions stored in the processor readable memory produce a manufactured product including instruction means, which implements the functions specified in one or more flows in the flowcharts and / or one or more blocks in the block diagrams.

[0283] These processor executable instructions can also be loaded onto a computer or other programmable data processing apparatus, so that a series of operational steps are performed on the computer or other programmable data processing apparatus to produce a computer implemented process, so that the instructions executed on the computer or other programmable data processing apparatus provide steps for implementing the functions specified in one or more flows in the flowcharts and / or one or more blocks in the block diagrams.

[0284] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A network access method, characterized by, The method comprises: The gateway station acquires public land mobile network (PLMN) information broadcast by a network device, the PLMN information comprising one or more PLMN information corresponding to gateway stations allowed to access the network device, the network device being a spaceborne base station, and the gateway station being a light gateway station; In a case where the PLMN information comprises first PLMN information corresponding to the gateway station, a random access procedure is initiated to the network device; The method further comprises: In a case where the random access is completed, a radio resource control (RRC) setup complete message is sent to the network device, the RRC setup complete message comprising information of a PLMN selected by the gateway station; The information of the PLMN selected by the gateway station indicates an index value of the first PLMN information corresponding to the gateway station in the PLMN information. The method further comprises: The method further comprises:

2. The method of claim 1, wherein, The RRC setup complete message further comprises: A check code. The method comprises:

3. The method of claim 1, wherein, A network device acquires whitelist information, the whitelist information comprising one or more PLMN information corresponding to gateway stations allowed to access the network device, the network device being a spaceborne base station; The network device broadcasts the PLMN information, the PLMN information comprising one or more PLMN information corresponding to gateway stations allowed to access the network device; 4. A network access method, characterized by, The network device performs a random access procedure with a gateway station initiating the random access, the gateway station initiating the random access being a light gateway station; The method further comprises: In a case where the PLMN information comprises first PLMN information corresponding to the gateway station, an RRC message sent by the gateway station in a random access procedure is received, the RRC message comprising identity information corresponding to the gateway station; The method further comprises: An RRC setup complete message sent by the gateway station is received, the RRC setup complete message comprising information of a PLMN selected by the gateway station; The information of the PLMN selected by the gateway station indicates an index value of the first PLMN information corresponding to the gateway station in the PLMN information. The method further comprises: The method further comprises: The whitelist information further comprises:

5. The method of claim 4, wherein, Identity information corresponding to gateway stations allowed to access the network device; A check code. The method further comprises: The method further comprises: The method further comprises:

6. The method of claim 4, wherein, The method further comprises: ​ 7. The method of claim 5, wherein, ​ ​ 8. The method of claim 4, wherein, ​ According to the identity information corresponding to the gateway station and the information of the PLMN selected by the gateway station, if it is determined that the information of the PLMN selected by the gateway station indicates that the index value of the first PLMN information corresponding to the gateway station in the PLMN information, it is confirmed that the gateway station accesses the network device.

9. The method of claim 4, wherein, The RRC setup complete message further comprises: a check code; The method further comprises: comparing the check code with the check code in the whitelist information; if the check code is the same as the check code in the whitelist information, it is confirmed that the gateway station accesses the network device; if the check code is different from the check code in the whitelist information, an RRC connection release process is initiated.

10. A gateway station, characterized by The gateway station is a light gateway station, comprising: a memory, a transceiver, and a processor: a memory for storing a computer program; a transceiver for receiving and sending data under the control of the processor; a processor for reading the computer program in the memory and performing the following operations: obtaining public land mobile network (PLMN) information broadcast by a network device, the PLMN information comprising one or more PLMN information corresponding to gateway stations allowed to access the network device, the network device being a satellite base station; the transceiver performs the following operations under the control of the processor: if the PLMN information contains first PLMN information corresponding to the gateway station, initiating a random access process to the network device, wherein initiating a random access process to the network device comprises: if the PLMN information contains first PLMN information corresponding to the gateway station, sending an RRC message to the network device in the random access process, the RRC message comprising identity information corresponding to the gateway station; if the random access is completed, sending an RRC setup complete message to the network device, the RRC setup complete message comprising information of a PLMN selected by the gateway station; the information of the PLMN selected by the gateway station indicates the index value of the first PLMN information corresponding to the gateway station in the PLMN information.

11. The gateway station of claim 10, wherein, the transceiver performs the following operations under the control of the processor: receiving a system information block (SIB) broadcast by the network device; the processor is configured to read the computer program in the memory and perform the following operations: reading the SIB to obtain PLMN information.

12. The gateway station of claim 10, wherein, The RRC setup complete message further comprises: a check code.

13. A network device, comprising: The network device is a satellite base station, comprising: a memory, a transceiver, and a processor: a memory for storing a computer program; a transceiver for receiving and sending data under the control of the processor; a processor for reading the computer program in the memory and performing the following operations: obtaining whitelist information, the whitelist information comprising one or more PLMN information corresponding to gateway stations allowed to access the network device; the transceiver performs the following operations under the control of the processor: broadcasting the PLMN information, the PLMN information comprising one or more PLMN information corresponding to gateway stations allowed to access the network device; performing a random access procedure with a gateway station that initiates the random access, the gateway station that initiates the random access being a light gateway station; wherein the performing the random access procedure with the gateway station that initiates the random access comprises: in a case that the PLMN information contains first PLMN information corresponding to the gateway station, receiving an RRC message sent by the gateway station in a random access procedure, the RRC message comprising identity information corresponding to the gateway station; receiving an RRC setup complete message sent by the gateway station, the RRC setup complete message comprising information of a PLMN selected by the gateway station; the information of the PLMN selected by the gateway station indicating an index value of the first PLMN information corresponding to the gateway station in the PLMN information.

14. The network device of claim 13, wherein, The transceiver performs the following operations under the control of the processor: receiving white list information sent by a satellite control function (SCF); wherein the white list information further comprises: identity information corresponding to a gateway station allowed to access the network device; a check code.

15. The network device of claim 13, wherein, The transceiver performs the following operations under the control of the processor: broadcasting a system information block (SIB) carrying the PLMN information.

16. The network device of claim 14, wherein, The transceiver performs the following operations under the control of the processor: sending a response message comprising a reporting result of the white list information to the SCF.

17. The network device of claim 13, wherein, The processor reads the computer program in the memory and performs the following operations: According to the identity information corresponding to the gateway station and the information of the PLMN selected by the gateway station, if it is determined that the information of the PLMN selected by the gateway station indicates the index value of the first PLMN information corresponding to the gateway station in the PLMN information, the gateway station is confirmed to access the network device.

18. The network device of claim 13, wherein, The RRC setup complete message further comprises: a check code; The processor reads the computer program in the memory and performs the following operations: comparing the check code with a check code in the white list information; if the check code is the same as the check code in the white list information, the gateway station is confirmed to access the network device; if the check code is different from the check code in the white list information, an RRC connection release procedure is initiated.

19. A processor-readable storage medium having stored thereon a computer program, characterized in that The computer program is executed by the processor to implement the steps of the network access method according to any one of claims 1 to 3, or to implement the steps of the network access method according to any one of claims 4 to 9.

Images