The recent advances in wireless sensor networks and sensing techniques enable various time-sensitive applications that require timely exchange of updates between a Base Station (BS) and ground terminals. In practice, the ground terminals may not be able to communicate with the BS directly due to constraints in transmit power and communication capability, and mobile agents are commonly employed to help collect and deliver the updates. In particular, the emerging mobile crowd sensing (MCS) provides an appealing cost-effective paradigm for such employment. However, in this case, the mobile agents are required to share their locations with the ground terminals and the BS, which incurs location privacy concerns and may deter them from participating in the information delivery process. With this consideration, a location privacy-aware payment mechanism, which can stimulate the mobile agents to report their locations with differential privacy levels desired by the BS, is proposed. Furthermore, considering that the BS usually has a limited budget, it is essential to properly select the set of mobile agents to perform the information collection tasks. Therefore, a cost-efficient mobile agent selection algorithm is proposed. Finally, simulation results are presented to demonstrate the effectiveness of the proposed method.

中文翻译：

---

在存在位置隐私感知的移动代理的情况下最大限度地缩短信息时代


无线传感器网络和传感技术的最新进展使得各种时间敏感的应用成为可能，这些应用需要在基站（BS）和地面终端之间及时交换更新。在实践中，由于发射功率和通信能力的限制，地面终端可能无法直接与BS通信，通常采用移动代理来帮助收集和传递更新。特别是，新兴的移动人群感知（MCS）为此类就业提供了一种有吸引力的、具有成本效益的范例。然而，在这种情况下，移动代理需要与地面终端和BS共享其位置，这会引起位置隐私问题，并可能阻止他们参与信息传递过程。考虑到这一点，提出了一种位置隐私感知支付机制，该机制可以刺激移动代理以BS所需的不同隐私级别报告其位置。此外，考虑到BS通常预算有限，因此必须正确选择一组移动代理来执行信息收集任务。因此，提出了一种经济有效的移动代理选择算法。最后，给出了仿真结果来证明该方法的有效性。