A space-based group service construction method supporting cross-satellite cross-beam mobile access

Abstract

The application discloses a space-based group service construction method supporting cross-satellite cross-beam mobile access and belongs to the field of satellite communication. Through a star-ground integrated group control mechanism, the application drives a satellite node to establish a cross-satellite cooperative group forwarding relationship, and under a single satellite, the application fully utilizes the broadcast characteristics of the satellite, realizes group service broadcast distribution and channel sharing, effectively solves the space-based group service transmission guarantee problem under the complex space-based network operation environment such as multi-satellite networking and cross-satellite cross-beam switching, can provide new-quality service applications for the space-based network, and further expands the flexibility of space-based network service application.

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, with their advantages of wide coverage, long communication distances, flexible networking, and freedom from geographical constraints, play a significant role in various military and civilian applications. By leveraging the inherent large-area broadcasting capabilities of satellite communications and integrating various business applications with satellite communications broadcasting, we can provide a wide range of users with low-cost, wide-area information distribution services.

[0003] With the development of satellite communication technology, satellite communications have begun to evolve from transparent single-satellite networking to a new generation of satellite communication systems based on onboard processing and cross-satellite networking. In particular, with the emergence of low-orbit constellation satellite communication systems, the number of satellite nodes in cross-satellite networking can reach tens of thousands. The periodic motion of satellites can bring complex network operation issues such as user cross-satellite and cross-beam mobile access. Therefore, how to maximize the broadcast characteristics of satellite communications in multi-satellite and multi-beam satellite communication systems to provide users with clustered business communication services for different application tasks and support cross-satellite 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 assigns cluster attribute information to the cluster group and sends it to the cluster master station and cluster slave stations within the cluster group through the satellite communication channel;

[0008] Step 2: The satellite communication cluster management control queries the space-based network control based on the cluster member information of the cluster group, obtains the satellite access identifier of each cluster member, and generates a cluster forwarding configuration table for the cluster group. The table is then sent to the satellite cluster control agent. The cluster control agent configures the onboard routing and establishes the local and inter-satellite cluster forwarding relationships.

[0009] Step 3: The cluster access modules of the cluster master and cluster slave obtain the cluster to which the station belongs and the cluster multicast address information based on the cluster attribute information, and assign 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 local cluster multicast address for the local cluster service and sends it to the satellite. The satellite-borne switching node distributes the cluster service from the satellite to the ground and forwards it across the satellite 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. 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 the 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 a mapping relationship between the cluster multicast address and the cluster member access routing identifier, thereby realizing 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 the dynamic joining and exit of cluster group members, the 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 data and voice within a cluster group and concurrent transmission of multiple cluster services, 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 solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended 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, 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 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. The satellite communication cluster management and control of the gateway station implements cluster group planning, management, and integrated satellite-ground cluster control. The space-based network control implements cluster member access awareness. The cluster master station and cluster slave stations implement the reception and transmission of cluster services. The satellite nodes of the space-based network implement 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 1, 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.

[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, 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 onboard routing to establish the local and inter-satellite cluster forwarding relationship.

[0027] Wherein, 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, so as to realize cluster service broadcast distribution and channel sharing.

[0028] Among them, in step 2, after a cluster master station or cluster slave station enters or exits the network state or changes its cross-satellite or cross-beam switching state, 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 business 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 local cluster multicast address for the local cluster service and sends it to the satellite. The satellite-borne 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. 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 and 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. It 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 an example of a preferred application of the present invention and is not intended to limit the scope of protection of the present invention. Any technical solution that adopts equivalent replacement or equivalent transformation is within the scope of protection of the present invention.

Claims

1. A method for constructing space-based cluster services that supports 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 assigns cluster attribute information to the cluster group and sends it to the cluster master station and cluster slave stations within the cluster group through the satellite communication channel; Step 2: The satellite communication cluster management control queries the space-based network control based on the cluster member information of the cluster group, obtains the satellite access identifier of each cluster member, and generates a cluster forwarding configuration table for the cluster group. The table is then sent to the satellite cluster control agent. The cluster control agent configures the onboard routing and establishes the local and inter-satellite cluster forwarding relationships. Step 3: The cluster access modules of the cluster master and cluster slave obtain the cluster to which the station belongs and the cluster multicast address information based on the cluster attribute information, and assign 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 local cluster multicast address for the local cluster service and sends it to the satellite. The satellite-borne switching node distributes the cluster service from the satellite to the ground and forwards it across the satellite 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. 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. A method for constructing a space-based cluster service supporting inter-satellite and inter-beam mobile access according to claim 1, characterized in that: Cluster attribute information includes cluster ID, cluster multicast address, cluster attributes, member information, cluster service type and cluster service session ID.

3. The method for constructing a space-based cluster service supporting inter-satellite and inter-beam mobile access according to claim 2, characterized in that: In step 1, 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 the cluster master station and cluster base stations within a cluster group.

4. The method for constructing a space-based cluster service supporting inter-satellite and inter-beam mobile access according to claim 1, wherein: 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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