Method and device for determining preamble sequence of physical random access channel

A device for determining a preamble sequence on a Physical Random Access Channel (PRACH), the device comprising:

• a processor configured to read and execute program in a memory to:
• determine instances of time at which respective preamble sub-sequences are detected in a detection window in a previous stage;
• determine instances of time at which the respective preamble sub-sequences are detected in the detection window in a current stage;
• and
• determine preamble sub-sequences belonging to a same preamble sequence according to the instances of time at which the respective preamble sub-sequences are detected in the current stage, and the instances of time at which the respective preamble sub-sequences are detected in the previous stage;
• and
• a transceiver configured to transmit and receive data under the control of the processor is configured to:
• receive the respective preamble sub-sequences in the previous stage;
• and
• receive the respective preamble sub-sequences in the current stage.

A non-transitory readable storage medium, comprising program codes configured to cause a computing device to:

• in a previous stage, receive respective preamble sub-sequences, and determine instances of time at which the respective preamble sub-sequences are detected in a detection window;
• in a current stage, receive respective preamble sub-sequences, and determine instances of time at which the respective preamble sub-sequences are detected in the detection window;
• and
• determine preamble sub-sequences belonging to a same preamble sequence according to the instances of time at which the respective preamble sub-sequences are detected in the current stage, and the instances of time at which the respective preamble sub-sequences are detected in the previous stage.