空间信息网络中，节点在时空域上高动态运动；节点资源有限且负荷不均；业务需求随任务变化，这些特点对现有的网络通信理论提出了严峻挑战。本项目以空间信息网络的时空动态性控制原理和宽带实时性保障机理两个科学问题为核心，深入研究：(1)大尺度时空动态性控制与网络重构机理。研究时空域拓扑动态性控制模型与网络重构方法。(2)分布式、多层次协作模型与方法。研究节点之间、网络之间的多层次协作模型、以及多路径协作传输方法。(3)基于多层次协作的任务与资源调度模型。提出弹性的任务调度与资源分配方法。(4)业务自适应的数据传输方法。研究基于业务需求的自适应传输模型和适度服务机制。本项目将建立支持传输连续性、业务自适应的空间信息网络宽带实时通信的若干基础理论与关键技术，取得系统的创新成果，为“空间信息网络基础理论与关键技术”重大研究计划总体目标的实现形成有效支持。

Space information networks exhibit the following characters: high mobility,limited resources,unbalanced load and different service requirements. These characters cause serious challenges to current wireless communication theories. This project focuses on two key scientific problems: large-scale time-spatial dynamics control principles and real-time bandwidth provisioning mechanisms.. In this project, we will intensively investigate the following important issues.Firstly, we are going to study dynamic control and network reconfiguration mechanisms in large-scale spatial and temporal environments, and propose time-spatial dynamical topology control models and network reconfiguration approaches. Secondly, distributed multi-level cooperation mechanisms and joint design approaches will be proposed, which mainly include multi-level cooperations among nodes and networks, and cooperative multi-path transmission approaches. Next, we are going to study efficient task scheduling and resource allocation mechanisms based on multi-level cooperation, proposing flexible task scheduling and resource allocation models. Finally, we will propose service-adaptive data transmission techniques, focusing on adaptive data transmission models and on-demand service mechanisms. This project will found a set of new theories and key technologies for uninterrupted and service-adaptive data transmission in space information networks with wide-band and real-time requirements. Innovative results will be delivered. These results can effectively promote the overall goals of the Major Research Plan on Basic Theory and Key Technology of Space Information Networks.