Considering the communication requirements of different monitoring services and the performance of different access networks, to ensure the quality of service and reliability of sensor networks, we propose an access network selection algorithm based on a quality-of-service (QoS) guarantee. According to the service requirements, the attributes that affect the terminal access options are determined. Then, utility functions are designed for normalizing the attribute values of the network. In addition, we construct a weight calculation model that combines subjective and objective factors. Finally, the algorithm calculates the relative closeness between each pair of networks by the technique for order preference by similarity to an ideal solution (TOPSIS) and sorts the candidate networks to obtain the best candidate network of each monitoring terminal to access. Simulation results show that the proposed algorithm can effectively meet the communication needs of different monitoring services, ensures network reliability, and can improve the utilization rate of network resources.

中文翻译：

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基于QoS保证的地面卫星网络接入网选择算法

考虑到不同监控服务的通信需求和不同接入网络的性能，为保证传感器网络的服务质量和可靠性，提出一种基于服务质量（QoS）保证的接入网络选择算法。根据业务需求，确定影响终端接入选项的属性。然后，效用函数被设计用于规范化网络的属性值。此外，我们构建了一个结合主客观因素的权重计算模型。最后，该算法通过与理想解相似的排序优先技术（TOPSIS）计算每对网络之间的相对接近度，并对候选网络进行排序，以获得每个监控终端接入的最佳候选网络。仿真结果表明，该算法能够有效满足不同监控业务的通信需求，保证网络可靠性，提高网络资源利用率。