Method and apparatus for extending coverage in communication system
摘要
說明書
For example, a random access (RA) procedure (e.g., RACH procedure, PRACH procedure) may be classified into a first RA procedure and a second RA procedure. In the first RA procedure, repeated transmission of a message (e.g., Msg1, Msg2, Msg3, Msg4, MsgA, and/or MsgB) in the first RA procedure may not be performed, and in the second RA procedure, repeated transmission of the message (e.g., Msg1, Msg2, Msg3, Msg4, MsgA, and/or MsgB) may performed. The base station may transmit an SIB and/or dedicated control message including configuration information of the first RA procedure and configuration information of the second RA procedure. The configuration information of the first RA procedure (e.g., parameters required for the first RA procedure) may be referred to as first RA configuration information, and the configuration information of the second RA procedure (e.g., parameters required for the second RA procedure) may be referred to as second RA configuration information. The terminal may receive the first RA configuration information and the second RA configuration information from the base station. When a predefined condition is satisfied, the terminal may perform the first RA procedure based on the first RA configuration information. When the predefined condition is not satisfied, the terminal may perform the second RA procedure based on the second RA configuration information. In the second RA procedure, the terminal may repeatedly transmit a PUSCH (e.g., Msg3 or MsgA).
