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LTE系统的随机接入是UE在开始和eNode B通信之前的接入过程,是保证通信建立的决定性环节。为了突出随机接入过程在LTE系统的地位和作用,文章从随机接入过程的分类,在MAC层和PHY的功能和步骤等方面分别进行研究,尤其对随机接入过程在MAC层的流程进行论证,得出仅有一步流程是纯粹的PHY的结论,为进一步深入研究随机接入过程的PHY奠定了良好的基础。
The random access of the LTE system is an access process of the UE before starting communication with the eNode B, and is a decisive part of establishing communication. In order to highlight the status and role of the random access process in the LTE system, the article studies the functions and steps of the MAC layer and the PHY separately from the classification of the random access process. In particular, the process of the random access process at the MAC layer Argument that the only one-step process is a pure PHY conclusion, in order to further study the random access process PHY has laid a good foundation.