Lee, Hong, Degerman, Kang & Waimey
Random access method using NDI and user equipment for the same
A random access method for preventing unnecessary uplink (UL) signal transmission using a New Data Indicator (NDI) and a user equipment for the same are disclosed. In the random access procedure, in order to prevent unnecessary transmission when a user equipment erroneously recognizes a UL grant signal transmitted using a cell identifier (C-RNTI) of another user equipment as a UL grant signal transmitted using its temporary cell identifier (temporary C-RNTI), toggling of an NDI indicating whether new data is transmitted may be used in a Hybrid Automatic Repeat reQuest (HARQ) system. In addition, determination as to whether or not the UL grant signal received during the random access procedure is different from that of a HARQ process used for transmission of a third message (Msg3) may be used.
LG ELECTRONICS INC.
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Sung Duck Sung Jun Seung June
Chun Park Yi