| 摘要 |
A method and system for facilitating communication in an LTE network between an eNB and Limited Capability Terminal Equipments (LCTEs). A subset of PRACH preambles is defined for use by the LCTEs. PRACH preambles are selected by LCTEs only from said subset for inclusion in transmission of a PRACH preamble message to the eNB. Upon receipt of a PRACH preamble belonging to the subset, the eNB adjusts its operation to accommodate a limitation of the LCTE corresponding to the PRACH preamble. For example, the eNB may schedule transmission of the associated RAR on a restricted set of PRBs which is predictable and accessible to said LCTEs, to accommodate LCTE reception limitations. The subset of PRACH preambles can be adjusted in size in order to control system performance. The subset may include one or more preambles for exclusive use by LCTEs and/or preambles for non-exclusive use by LCTEs. |
