Random access method, base station, user equipment and device with storage function

A UE, comprising:

• a processor, a communication circuit and a storage, wherein the processor is connected to the communication circuit and the storage, the storage stores program instructions, and the processor executes the program instructions to implement a random access method through the communication circuit, comprising:
• transmitting a first message for random access for the UE, the first message including a preamble message and a signal message;
• receiving a second message and a fourth message for random access for the UE at a time and determining random access for the UE is successful upon receiving the second message and the fourth message;
• and
• upon reception of the second message configured to request the UE to transmit the signal message, transmitting a third message comprising the signal message, receiving the fourth message in response to the third message, and determining random access for the UE is successful upon receiving the fourth message;
• the second message comprises at least one of a time adjustment information, a cell radio network temporary identity, or an uplink resource allocation;
• and
• the fourth message comprises a contention resolution.

A base station, comprising:

• a processor, a communication circuit, and a storage, wherein the processor is connected to the communication circuit and the storage, the storage stores program instructions, and the processor executes the program instructions to implement a random access method through the communication circuit comprising:
• receiving a first message for a random access, wherein the first message includes a preamble message and a signal message;
• decoding the first message comprising the preamble message and the signal message;
• transmitting, upon successfully decoding the first message, a second message and a fourth message at a time for the random access to notify that the random access is successful;
• when the preamble message is successfully decoded while decoding of the signal message is failed, the base station transmitting the second message configured to request a third message that comprises the signal message;
• upon reception of the third message transmitted in response to the second message, the base station decoding the signal message from the third message;
• and
• when decoding of the preamble message and the signal message are both successful, transmitting the fourth message configured to notify the random access is successful;
• the second message comprises at least one of a time adjustment information, a cell radio network temporary identity, or an uplink resource allocation;
• and
• the fourth message comprises a contention resolution.

A random access method executed by a user equipment (UE), comprising:

• transmitting a first message for random access for the UE, the first message including a preamble message and a signal message;
• receiving a second message and a fourth message for random access for the UE at a time and determining random access for the UE is successful upon receiving the second message and the fourth message;
• and
• upon reception of the second message configured to request the UE to transmit the signal message, transmitting a third message comprising the signal message, receiving the fourth message in response to the third message, and determining random access for the UE is successful upon receiving the fourth message;
• the second message comprises at least one of a time adjustment information, a cell radio network temporary identity, or an uplink resource allocation;
• and
• the fourth message comprises a contention resolution.