Space-based cluster service construction method supporting cross-satellite cross-beam mobile access

Abstract

The invention discloses a space-based cluster service construction method supporting cross-satellite cross-beam mobile access, and belongs to the field of satellite communication. Through a satellite-ground integrated cluster control mechanism, satellite nodes are driven to establish a cross-satellite cooperative cluster forwarding relationship, and broadcast characteristics of satellites are fully utilized under a single satellite, so that cluster service broadcast distribution and channel sharing are realized; the space-based cluster service transmission guarantee problem in complex space-based network operation environments such as multi-satellite networking and cross-satellite and cross-beam switching is effectively solved, new service application can be provided for a space-based network, and the flexibility of space-based network service application is further expanded.

Description

Technical Field

[0001] The invention discloses a method for constructing space-based cluster services supporting inter-satellite and inter-beam mobile access, and relates to the technical field of satellite communications. Background Art

[0002] Satellite communications have the advantages of large coverage, long communication distance, flexible networking, and no geographical restrictions, and play a huge role in various military and civilian applications. By utilizing the natural large-area broadcasting characteristics of satellite communications and combining various business applications with satellite communication broadcasting, it can provide a large-area, low-cost wide-area information distribution communication service guarantee for various users.

[0003] With the development of satellite communication technology, satellite communication has begun to evolve from transparent satellite single-star networking to a new generation of satellite communication systems based on on-board processing and cross-star networking. In particular, with the emergence of low-orbit constellation satellite communication systems, the number of satellite nodes in cross-star networking can reach tens of thousands, and the periodic movement of satellites will bring complex network operation problems such as user cross-star and cross-beam mobile access. Therefore, how to maximize the use of satellite communication broadcast characteristics in a satellite communication system with multiple satellites and multiple beams networking, and provide users with cluster business communication service guarantees for different application tasks and supporting cross-star and cross-beam mobile access, has become a difficult problem that needs to be solved. Summary of the invention

[0004] In view of this, the present invention designs a method for constructing space-based cluster services that supports cross-satellite and cross-beam mobile access, realizes cluster service broadcast distribution and channel sharing in a multi-satellite networking environment, and improves the flexibility of space-based network service applications.

[0005] The present invention is achieved through the following technical solutions:

[0006] A method for constructing a space-based cluster service supporting inter-satellite and inter-beam mobile access specifically comprises the following steps:

[0007] Step 1: After the satellite communication cluster management control of the gateway station dynamically creates a cluster group, it allocates cluster attribute information to the cluster group and sends it to the cluster master station and cluster slave stations in the cluster group through the satellite communication channel;

[0008] Step 2: The satellite communication cluster management control queries the space-based network control according to the cluster member information of the cluster group, obtains the satellite access identification of each cluster member and generates a cluster forwarding configuration table for the cluster group, and then sends it to the satellite cluster control agent. The cluster control agent configures the satellite-borne routing and establishes the local and inter-satellite cluster forwarding relationship;

[0009] Step 3: The cluster access modules of the cluster master station and the cluster slave station obtain the cluster to which the station belongs and the cluster multicast address information according to the cluster attribute information, and allocate different session IDs to the cluster voice terminals and cluster data terminals of the station;

[0010] Step 4: When the cluster master station sends a cluster service, its cluster access module encapsulates the session ID and the cluster multicast address of the local station for the cluster service and sends it to the satellite. The satellite switching node performs satellite-to-ground broadcast distribution and inter-satellite forwarding of the cluster service according to the cluster forwarding table.

[0011] Step 5: The cluster slave station receives the cluster service according to the cluster multicast address of the station, and the cluster access module sends the cluster service data to different cluster voice terminals or cluster data terminals according to the cluster ID and session ID in the data packet.

[0012] Furthermore, the cluster attribute information includes a cluster ID, a cluster multicast address, cluster attributes, member information, a cluster service type, and a cluster service session ID.

[0013] Furthermore, in step 1, the cluster ID, cluster service type and cluster service session ID are used to uniquely identify different cluster service flows of different clusters, thereby supporting concurrent transmission of multiple cluster voices and data between a cluster master station and cluster slave stations within a cluster group.

[0014] Furthermore, in step 2, the cluster forwarding configuration table is used to maintain the mapping relationship between the cluster multicast address and the cluster member access routing identifier to achieve cluster service broadcast distribution and channel sharing.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention can realize inter-satellite forwarding of cluster services and channel sharing of single-satellite cluster services, thereby improving the efficiency of satellite resource utilization.

[0017] 2. The present invention can realize dynamic joining and exit of cluster group members, adaptive adjustment of cluster service communication after cluster members switch across satellites and beams, and improve user experience.

[0018] 3. The present invention can realize simultaneous transmission of digital and voice messages within a cluster group and concurrent transmission of multiple cluster services, thus enriching the cluster service application mode in the space-based network. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of an application scenario of the present invention. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0021] This embodiment uses a satellite-ground integrated cluster control mechanism to drive satellite nodes to establish cross-satellite collaborative cluster forwarding relationships, realize cluster service broadcast distribution in multi-satellite networking scenarios, and effectively solve the problem of space-based cluster service transmission guarantee in complex space-based network operating environments such as multi-satellite networking and cross-satellite switching, and can provide new quality service applications for space-based networks.

[0022] Figure 1 The figure shows an application scenario of a method for constructing space-based cluster services that supports cross-satellite and cross-beam mobile access, in which the satellite communication cluster management and control of the gateway station realizes cluster group planning, management and satellite-ground integrated cluster control, and the space-based network control realizes cluster member access awareness; the cluster master station and the cluster slave station realize the reception and transmission of cluster services; the satellite nodes of the space-based network realize cross-satellite networking based on packet switching.

[0023] The method comprises the following steps:

[0024] Step 1: After the satellite communication cluster management control dynamically creates a cluster group, it allocates cluster attribute information such as cluster ID, cluster multicast address, cluster attributes, member information, cluster service type and cluster service session ID to the cluster group, and sends it to the cluster master station and cluster slave stations in the cluster group through the satellite communication channel.

[0025] In step A, cluster ID, cluster service type and cluster service session ID are used to uniquely identify different cluster service flows of different clusters, thereby supporting concurrent transmission of multi-channel cluster voice and data between a cluster master station and cluster slave stations within a cluster group.

[0026] Step 2: The satellite communication cluster management queries the space-based network control according to the cluster member information of the cluster group, obtains the satellite access identification of each cluster member and generates a cluster forwarding configuration table for the cluster group, and sends it to the satellite cluster control agent. The cluster control agent configures the satellite-borne routing to establish the local and inter-satellite cluster forwarding relationship.

[0027] Wherein, in step B, the cluster forwarding configuration table is used to maintain the mapping relationship between the cluster multicast address and the cluster member access routing identifier, so as to realize cluster service broadcast distribution and channel sharing.

[0028] Among them, in the step B, after a cluster master station or cluster slave station enters or leaves the network, or changes its cross-satellite or cross-beam switching status, the space-based network control triggers the update of the new access identifier of the station to the cluster management control, so that the satellite communication cluster management control updates the cluster forwarding configuration table to the on-board cluster control agent, thereby supporting uninterrupted cluster service communications in a complex space-based network operating environment.

[0029] Step 3: The cluster access modules of the cluster master station and the cluster slave station obtain the cluster to which the station belongs and the cluster multicast address information according to the cluster attribute information, and allocate different session IDs to each cluster voice terminal and cluster data terminal of the station.

[0030] Step 4: When the cluster master station sends a cluster service, the cluster access module encapsulates the session ID and the cluster multicast address of the local station for the cluster service and sends it to the satellite. The satellite switching node performs satellite-to-ground broadcast distribution and inter-satellite forwarding of the cluster service according to the cluster forwarding table.

[0031] Step 5: The cluster slave station receives the cluster service according to the cluster multicast address of the station, and the cluster access module sends the cluster service data to different cluster voice terminals or cluster data terminals according to the cluster ID and session ID in the data packet.

[0032] The present invention realizes the creation of cluster groups and cross-satellite collaborative broadcast control through integrated satellite-ground cluster control, realizes simultaneous transmission of data and voice within a cluster group, and concurrent transmission of multiple cluster services, enriches the cluster service application mode in the space-based network, and effectively solves the problem of space-based cluster service transmission guarantee in complex space-based network operating environments such as multi-satellite networking, cross-satellite and cross-beam switching.

[0033] In summary, the present invention has created an original method for constructing space-based cluster services that supports cross-satellite and cross-beam mobile access, which can be applied to space-based networks based on cross-satellite packet switching, providing new quality service applications for space-based networks and further expanding the flexibility of space-based network service applications.

[0034] It should be noted that the above description is only a preferred application example of the present invention and is not intended to limit the protection scope of the present invention. Any technical solution using equivalent replacement or equivalent transformation is within the protection scope of the present invention.

Claims

1. A method for constructing a space-based cluster service supporting inter-satellite and inter-beam mobile access, characterized in that: The specific steps include: Step 1: After the satellite communication cluster management control of the gateway station dynamically creates a cluster group, it allocates cluster attribute information to the cluster group and sends it to the cluster master station and cluster slave stations in the cluster group through the satellite communication channel; Step 2: The satellite communication cluster management control queries the space-based network control according to the cluster member information of the cluster group, obtains the satellite access identification of each cluster member and generates a cluster forwarding configuration table for the cluster group, and then sends it to the satellite cluster control agent. The cluster control agent configures the satellite-borne routing and establishes the local and inter-satellite cluster forwarding relationship; Step 3: The cluster access modules of the cluster master station and the cluster slave station obtain the cluster to which the station belongs and the cluster multicast address information according to the cluster attribute information, and allocate different session IDs to the cluster voice terminals and cluster data terminals of the station; Step 4: When the cluster master station sends a cluster service, its cluster access module encapsulates the session ID and the cluster multicast address of the local station for the cluster service and sends it to the satellite. The satellite switching node performs satellite-to-ground broadcast distribution and inter-satellite forwarding of the cluster service according to the cluster forwarding table. Step 5: The cluster slave station receives the cluster service according to the cluster multicast address of the station, and the cluster access module sends the cluster service data to different cluster voice terminals or cluster data terminals according to the cluster ID and session ID in the data packet.

2. According to claim 1, a method for constructing a space-based cluster service supporting inter-satellite and inter-beam mobile access is characterized in that: The cluster attribute information includes cluster ID, cluster multicast address, cluster attributes, member information, cluster service type and cluster service session ID.

3. According to claim 2, a method for constructing a space-based cluster service supporting inter-satellite and inter-beam mobile access, characterized in that: In step 1, the cluster ID, cluster service type and cluster service session ID are used to uniquely identify different cluster service flows of different clusters, thereby supporting concurrent transmission of multiple cluster voice and data between a cluster master station and a cluster base station within a cluster group.

4. According to claim 1, a method for constructing a space-based cluster service supporting inter-satellite and inter-beam mobile access, characterized in that: In step 2, the cluster forwarding configuration table is used to maintain the mapping relationship between the cluster multicast address and the cluster member access routing identifier to achieve cluster service broadcast distribution and channel sharing.

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