In socially aware networks, data forwarding is usually performed based on opportunistic peer-to-peer connections and using a store-and-forward method. This method requires active collaboration from all nodes. However, due to resource limitations and other factors, several nodes exhibit selfishness and are unwilling to consume their resources to assist other nodes in forwarding data. To tackle the problems of insufficient participating nodes and low willingness to participate, this paper proposes a Service pricing-based Two-stage Incentive Algorithm (STIA). First, in view of the lack of rewards for high reputation nodes in reputation incentive and the indistinguishability of prices for different service levels in credit mechanism, leading to poor incentive effects, this paper uses the service quality of nodes and their own resources to design message pricing functions as rewards for service providers and prevents nodes from making fraudulent offers by disclosing the resource status of both parties. Secondly, this paper considers the case where relay nodes will discard accepted data, thus proposing a two-stage incentive mechanism that motivates nodes to receive and forward data. Finally, in response to nodes discarding received messages due to short-term currency shortages, nodes are permitted to overdraw their currency according to their forwarding capacity under the condition of setting restrictions to increase network cooperation. Experimental simulation results show that STIA offers significant improvements in delivery ratio and latency of messages over existing incentive schemes.

在具有社会意识的网络中，数据转发通常基于机会性点对点连接并使用存储转发方法来执行。这种方法需要所有节点的积极协作。但是，由于资源限制等因素，一些节点表现出自私，不愿意消耗自己的资源来协助其他节点转发数据。针对参与节点不足、参与意愿低的问题，提出一种基于服务定价的两阶段激励算法（STIA）。首先，针对高信誉节点在信誉激励中缺乏奖励，以及在信用机制中不同服务等级的价格无法区分，导致激励效果不佳，本文利用节点的服务质量和自身资源进行消息设计。定价功能作为对服务提供商的奖励，并通过披露双方的资源状态来防止节点进行欺诈性报价。其次，本文考虑了中继节点丢弃接受数据的情况，从而提出了一种两阶段激励机制，激励节点接收和转发数据。最后，针对节点由于短期货币短缺而丢弃接收到的消息，在设置限制条件下，允许节点根据自身的转发能力透支其货币，以增加网络合作。实验模拟结果表明，与现有激励计划相比，STIA 在传递率和消息延迟方面提供了显着改善。