A kind of authentication method and system of geo satellite internet of things

Abstract

The present invention relates to the field of communication technology, and discloses a GEO satellite Internet of Things authentication method and system, including: before a terminal accesses the satellite network, obtains the frequency point information of the access channel according to the system broadcast message; Before initiating random access, generate a random number based on the estimated frame number received by the ground station after being forwarded by the satellite according to the frame number to be sent, and call the SIM card in the terminal to obtain authentication data, and then use the IMSI and authentication data of the terminal The authorization data is sent to the satellite through random access; the satellite ground station can generate the same random number as the terminal according to the received frame number and time after receiving the random access, and then use the IMSI, random number and authentication data according to the same algorithm as the terminal Complete the authentication; after the authentication is passed, the satellite ground station sends an access permission to the terminal to complete the terminal's network access process. The present invention fully considers the long-time-delay scenario of the satellite, designs a scheme for simplifying signaling interaction, saves the power consumption of the terminal of the Internet of Things and improves the access capacity of the system.

Description

technical field

[0001] The invention relates to the technical field of communication, and in particular, to a method and system implementation of a GEO satellite Internet of Things authentication method. Background technique

[0002] GEO satellites (geostationary orbit satellites) are located 30,000 kilometers above the equator and are relatively stationary with the earth. They have the characteristics of wide beam coverage and can provide communication capabilities in areas that cannot be covered by ground mobile communication systems such as the field and ocean. At the same time, GEO satellites have the disadvantages of prolonged communication and large channel attenuation.

[0003] The current commercial GEO satellite mobile communication systems, such as the Maritime Satellite System and Tiantong-1 satellite system, all adopt the communication protocol process similar to the ground mobile communication system, especially in the aspects of network access registration, aut...

Examples

Embodiment Construction

[0035] In order to facilitate the understanding of the technical solution of this patent by those skilled in the art, and at the same time, in order to make the technical purpose, technical solution and beneficial effect of this patent clearer, and to fully support the protection scope of the claims, the following is combined in the form of specific cases. The accompanying drawings further illustrate the technical solutions of the present patent in more detail.

[0036] A GEO satellite IoT authentication method, such as figure 1 As shown, the implementation steps are:

[0037] (1) Before accessing the system, the satellite IoT terminal first completes the synchronization with the system broadcast, and obtains the physical frame number and public access channel configuration information in the system broadcast message. In addition, the terminal also obtains the standard time information T through the positioning function;

[0038] (2) Satellite IoT terminal according to the f...

technical field

[0001] The invention relates to the technical field of communication, and in particular, to a method and system implementation of a GEO satellite Internet of Things authentication method. Background technique

[0002] GEO satellites (geostationary orbit satellites) are located 30,000 kilometers above the equator and are relatively stationary with the earth. They have the characteristics of wide beam coverage and can provide communication capabilities in areas that cannot be covered by ground mobile communication systems such as the field and ocean. At the same time, GEO satellites have the disadvantages of prolonged communication and large channel attenuation.

[0003] The current commercial GEO satellite mobile communication systems, such as the Maritime Satellite System and Tiantong-1 satellite system, all adopt the communication protocol process similar to the ground mobile communication system, especially in the aspects of network access registration, aut...

Examples

Embodiment Construction

[0035] In order to facilitate the understanding of the technical solution of this patent by those skilled in the art, and at the same time, in order to make the technical purpose, technical solution and beneficial effect of this patent clearer, and to fully support the protection scope of the claims, the following is combined in the form of specific cases. The accompanying drawings further illustrate the technical solutions of the present patent in more detail.

[0036] A GEO satellite IoT authentication method, such as figure 1 As shown, the implementation steps are:

[0037] (1) Before accessing the system, the satellite IoT terminal first completes the synchronization with the system broadcast, and obtains the physical frame number and public access channel configuration information in the system broadcast message. In addition, the terminal also obtains the standard time information T through the positioning function;

[0038] (2) Satellite IoT terminal according to the f...

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