Xidian University

Sijing Ji

Jiandong Li

Min Sheng

Yan Shi

Di Zhou

Weigang Bai

Haoran Li

Yan Zhu

Liuying Wang

Chenxi Bao

Hongmei He

A system and a method for operation, maintenance and resource management of mega-constellations based on computing-network integration are provided. The system includes: K MEO satellites and N LEO satellites, each MEO satellite manages multiple LEO satellites in each time slot of each scheduling cycle. Each LEO satellite is configured to acquire data of a computing task within a preset time period and perform data computation based on resource scheduling information for time slot t transmitted by an MEO satellite in each time slot t of each scheduling cycle within the preset time period. Each MEO satellite is configured to generate the resource scheduling information for time slot t based on its own resource task status in the time slot t, transmit the resource scheduling information for time slot t to each of the multiple LEO satellites under its management during the time slot t, and to perform coordinated data computation on computing tasks of the multiple LEO satellites it manages.

System and method for operation, maintenance, and resource management of mega-constellations based on computing-network integration

A service-level communication and computing collaborative resource allocation device and method for a large-scale satellite network are provided, the device includes: a network information management function module including a service request collection unit configured to collect service requests arriving at each satellite node in the network, and a network resource collection unit configured to collect available resource status information for each satellite node; a service preprocessing function module configured to preprocess service requests; a service feature extraction function module configured to perform feature extraction for preprocessed service requests to generate service demand features; a service order decision submodule configured to determine a service order of service requests; a service strategy decision submodule configured to output a service strategy of the service request. The device and method can effectively ensure that the large-scale satellite network provides high-performance services for service with service demands of communication and computing collaborative resources.

Service-level communication and computing collaborative resource allocation device and method for large-scale satellite networks

Hierarchical network operation and resource control system and method for a mega satellite constellation, belonging to the field of spatial information technology, are provided. The hierarchical network operation and resource control system includes a service layer, a global organization layer, a local coordination layer and a resource layer. The service layer is used as an input to drive operation of whole system. The global organization layer is to realize 'operation, measurement and control' integrated control and decision of whole network. The local coordination layer is to realize local management decision and management slice generation. The resource layer is to provide physical resource and physical device and realize resource virtualization. By deploying local coordination layer controllers on GSO or MEO satellites, the deployment of local coordination layer controllers is not limited by inability of deploying ground stations globally and therefore the control of large-scale LEO satellite constellation can be achieved.

Hierarchical network operation and resource control system and method for mega satellite constellations

Lightweight inter-satellite handover device and method for a mega LEO satellite network are provided. An attribute extraction sub-module extracts attributes of handover users in a user information storage unit. Based on the attributes of the handover users, a cluster sub-module clusters the handover users into user clusters. A decision set generator sub-module generates target satellite sets of the user clusters, determines each target satellite of the target satellite sets of the user clusters of each LEO satellite whether belongs to LEO satellites in a management domain of a handover decision point of managing the LEO satellite based on management domain information in a LEO satellite information storage unit, and if YES, performing inter-satellite handover by a centralized decision unit, otherwise performing inter-satellite handover by a distributed decision unit. Therefore, lightweight inter-satellite handover is achieved, cost of handover decision is reduced, and resource utilization of LEO satellite is increased.

Lightweight inter-satellite handover device and method for mega low-earth-orbit satellite networks

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Xi’an, China

Sijing Ji