(Chongqing University of Posts and Telecommunications, Chongqing 400065 China)
Abstract：UE boot attachment process is an important part in the TD-LTE technology and the essential part of the normal communication. In this article, we introduce the process of the UE boot to UE successful attachment, including the PLMN selection, cell selection and UE attached. With the actual needs of research projects, we focus on the analysis of the abnormal signaling processes of the UE attached which may exist in the access network, and process methods to solve this kind of problem in the research projects.
Key words: TD-LTE; PLMN selection; cell selection; UE attached; abnormal signaling processes

References
[1] Xingbing Cao, Lili Liu. Research of the RRC Layer IDLE State in TD-LTE. ICEIT 2010.10 pp: 349-352.
[2] 3GPP TS 36.331 V9.0.0 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access(E-URTAN) Radio Resource Control (RRC) Protocol specification (2009.9 ) [S].
[3] 3GPP TS 36.101 V9.0.0: "NAS functions related to Mobile Station (MS) in idle mode" (2010.3)[S].
[4] Wang Qiong; Liu Yi. Design and Realization of PDN Connectivity Procedure in LTE Radio Protocol Stack. Conference Publications,2011.5, pp 110-130 [5] 3GPP TS 36.508 V9.0.0 Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Packet Core (EPC) (2010.3)[S].
[6] 3GPP TS 24.301 V8.9.0 3rd Generation Partnership Project; Technical Specification Group Radio Access Network and Terminals; Non-Access-Stratum(NAS) protocol for Evolved Packet System(EPS)(2010.3)[S].

                 
作者簡介：
王國仲，男，1988年生，碩士研究生，主要研究方向：TD-LTE系統高層協議開發。

李小文，男，1955年生，研究員，碩士生導師，主要研究方向：TD-SCDMA和TD-LTE系統開發。
彭醇陵，女，1989年生，碩士研究生，主要研究方向：移動通信網絡編碼與協作。