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本文随着全球各地移动用户的剧增及移动业务宽带化形势不断发展,如何有效地利用有限的频谱资源传输更多的数据流量成为关键问题。由于LTE-D2D通信模式下,用户数据直接在终端之间传输,不经过网络中转,进而节省了无线资源、降低端到端的时延、减少了终端的电池消耗、提升了用户体验,因此LTE-D2D成为解决这个问题的一个可行的技术方案,并得到了广泛的研究。本文首先对LTE-D2D进行概述,包括定义、与其他短距离通信技术的比较情况、网络架构。接着分析LTE-D2D引入后,蜂窝网络安全面临的挑战。最后给出相应的安全防护建议。
With the rapid growth of mobile subscribers around the world and the growing broadband mobile services, how to effectively use limited spectrum resources to transmit more data traffic becomes a key issue. Because LTE-D2D communication mode, user data is transmitted directly between terminals without network transit, thereby saving radio resources, reducing end-to-end delay, reducing battery consumption of a terminal, and improving user experience. Therefore, LTE- D2D has become a viable technical solution to this problem and has been widely studied. This article first outlines the LTE-D2D, including the definition, comparison with other short-range communication technologies, network architecture. Then analyze the challenges of cellular network security after the introduction of LTE-D2D. Finally, the corresponding security advice is given.