Detection and Mitigation of Uplink Control Channel Jamming in LTE
Detection and Mitigation of Uplink Control Channel Jamming in LTE
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LTE 中上行控制信道干扰的检测和缓解
DOI：
10.1109/milcom.2014.199
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
Jeffrey H. Reed
中科院分区：
文献类型：
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作者：
Marc Lichtman;Thaddeus Czauski;Sean Ha;Paul David;Jeffrey H. Reed
在3GPP LTE中，物理层被划分为数据和信令，其中信令（或控制信息）实现高效的数据交换/资源调度。LTE上行链路包含被称为物理上行链路控制信道（PUCCH）的物理信道，其携带上行链路控制信息，诸如从用户设备（UE）到LTE基站（eNodeB）的消息确认、调度请求和信道状态信息。PUCCH在静态位置中位于系统带宽的边缘上。PUCCH的静态分配呈现了一个困境：对手可以以最小的努力破坏上行链路信道，并且仅需要知道PUCCH的频谱分配。在本文中，我们（i）仔细研究PUCCH的目的和规范，（ii）我们提出了用于检测PUCCH上的干扰的各种策略，以及（iii）我们概述了用于减轻PUCCH上的“协议感知”干扰的策略。一些缓解策略（诸如控制信息复制）可以以对LTE eNodeB和UE的最小改变来实现，而其他对策需要对eNodeB和UE硬件或软件两者的增强。
In 3GPP LTE, the physical layer is divided into data and signaling, where the signaling (or control information) enables efficient data exchange/resource scheduling. The LTE uplink contains a physical channel known as the Physical Uplink Control Channel (PUCCH), which carries uplink control information such as message acknowledgements, scheduling requests, and channel status information from user equipment (UE) to LTE base stations (eNodeB). The PUCCH is located on the edges of the system bandwidth in a static location. The static allocation of the PUCCH presents a dilemma: an adversary can disrupt the uplink channel with minimal effort and only needs to know the PUCCH's spectrum allocation. In this paper we (i) take a closer look at the purpose and specification of the PUCCH, (ii) we propose various strategies to be used for the detection of interference specifically on the PUCCH, and (iii) we outline strategies for mitigating 'protocol-aware' interference on the PUCCH. Some of the mitigation strategies, such as control information duplication, can be implemented with minimal changes to LTE eNodeBs and UEs, while other countermeasures require augmentations to both eNodeB and UE hardware or software.