Carrier aggregation/channel bonding in next generation cellular networks: methods and challenges
Carrier aggregation/channel bonding in next generation cellular networks: methods and challenges
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DOI：
10.1109/mnet.2014.6963802
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发表时间：
2014-11
期刊：
影响因子：
9.3
通讯作者：
Z. Khan;H. Ahmadi;E. Hossain;M. Coupechoux;L. Dasilva;Janne J. Lehtomäki
中科院分区：
文献类型：
--
作者：
Z. Khan;H. Ahmadi;E. Hossain;M. Coupechoux;L. Dasilva;Janne J. Lehtomäki
为了向蜂窝系统提供额外的频谱资源，无线行业正在考虑在授权、未授权和共享接入（SA）频带中聚合频率载波。在本文中，我们关注可靠的载波聚合/信道绑定（CA/CB）技术，其中当执行授权、未授权和SA载波之间的CA/CB时，授权载波用于主载波和辅载波，并且未授权和SA载波作为附加辅载波操作。我们提供了一个分类的CA/CB在蜂窝网络中的使用，并强调不同的CA/CB方法之间的差异。我们提出的情况是，尽管授权主载波可以给出控制信令的可靠传输，但由于未授权和SA频带的性质，为了有效聚合辅载波，需要新的CA/CB方法。为了说明我们的情况下，新的CA/CB方法，我们提供了不同的网络环境中，智能CA/CB的决定，可以增加吞吐量相比，传统的CA/CB方法的例子。最后，我们强调的挑战，在设计新的CA/CB技术在未经授权和SA频段。
To provide cellular systems with additional spectral resources, the wireless industry is considering the aggregation of frequency carriers in licensed, unlicensed, and shared access (SA) bands. In this article, we focus on reliable carrier aggregation/channel bonding (CA/CB) techniques, in which when CA/CB between the licensed, unlicensed, and SA carriers is performed, the licensed carrier is used for the primary and secondary carriers, and the unlicensed and SA carriers operate as additional secondary carriers. We provide a taxonomy of the use of CA/CB in cellular networks and highlight the differences between different CA/CB approaches. We make the case that although the licensed primary carrier can give reliable transmission of control signaling, due to the nature of unlicensed and SA bands, for the efficient aggregation of secondary carriers there is a need for new CA/CB methods. To illustrate our case for novel CA/CB methods, we provide examples for different network environments where intelligent CA/CB decisions can increase throughput compared to the traditional CA/CB methods. Finally, we highlight challenges in the design of novel CA/CB techniques in unlicensed and SA bands.