Design of Enhanced Paging for LTE-based Satellite Mobile Communications
Design of Enhanced Paging for LTE-based Satellite Mobile Communications
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DOI：
10.2514/6.2012-15163
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发表时间：
2012-09
期刊：
影响因子：
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通讯作者：
Zhen Gao;Ming Zhao;Jing Wang
中科院分区：
文献类型：
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作者：
Zhen Gao;Ming Zhao;Jing Wang
卫星移动通信始终需要LOS环境。如果LOS路径被阻塞，信号强度可能远低于正常通信的SNR阈值，因此来电将无法到达用户。在这种情况下，需要增强寻呼来告诉用户走出阴影来接听呼叫。本文提出了一种针对基于 LTE 的卫星移动通信的增强型寻呼设计。讨论了基本的设计问题，包括要传输的信息、LTE 框架中的资源分配、可靠传输的技术以及非目标用途的节能。对增强寻呼的两种实现方案进行了仿真，以显示 LTE 系统中相对于普通寻呼的性能改进。
Satellite mobile communications always require LOS environments. If the LOS path is obstructed, the signal strength can be much lower than the SNR threshold for normal communication, so a coming call will not reach the user. In this case, an enhanced paging is needed to tell the user to move out of the shadow to receive the call. In this paper, a enhanced paging design is proposed for LTE-based satellite mobile communications. Basic design issues are discussed, including the information to transmit, the resource allocation for in LTE framework, techniques for reliable transmissions and energy saving for un-targeted uses. Two implementation schemes of the enhanced paging are simulated to show the performance improvement relative to the normal paging in LTE systems.