Method and device for determining preamble sequence of physical random access channel
Disclosed are a method and device for determining a preamble sequence of a physical random access channel. The method includes in a previous stage, receiving respective preamble sub-sequences, and determining instances of time at which the respective preamble sub-sequences are detected in a detection window; in a current stage, receiving respective preamble sub-sequences, and determining instances of time at which the respective preamble sub-sequences are detected in the detection window; and determining 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.
1. A method for determining a preamble sequence on a Physical Random Access Channel (PRACH), the method comprising:
in a previous stage, receiving respective preamble sub-sequences, and determining instances of time at which the respective preamble sub-sequences are detected in a detection window;
in a current stage, receiving respective preamble sub-sequences, and determining instances of time at which the respective preamble sub-sequences are detected in the detection window; and
determining 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.
2. The method according to claim 1 , wherein the detection window is a Zadoff-Chu (ZC) sequence detection window.
3. The method according to claim 2 , wherein the ZC sequence detection window is a ZC sequence detection window of a same root sequence, or a ZC sequence detection window of different root sequences.
4. The method according to claim 1 , wherein the instances of time at which the respective preamble sub-sequences are detected in the detection window are detected at timing positions.
5. The method according to claim 1 , wherein determining preamble sub-sequences belonging to the 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 comprises:
determining an instance of time at which a preamble sub-sequence is detected in the current stage, and an instance of time at which some preamble sub-sequence as preamble sub-sequences belonging to the same preamble sequence in response to that a difference between the instance of time at which the preamble sub-sequence is detected in the current stage, and the instance of time at which the some preamble sub-sequence is detected in the previous stage is below a preset difference threshold.
6. 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.
7. The device according to claim 6 , wherein the processor is further configured to determine the instances of time at which the respective preamble sub-sequences are detected in a ZC sequence detection window.
8. The device according to claim 7 , wherein the ZC sequence detection window is a ZC sequence detection window of a same root sequence, or a ZC sequence detection window of different root sequences.
9. The device according to claim 6 , wherein the processor is further configured to detect the instances of time at which the respective preamble sub-sequences in the detection window at timing positions.
10. The device according to claim 6 , wherein the processor is further configured to determine an instance of time at which a preamble sub-sequence is detected in the current stage, and an instance of time at which some preamble sub-sequence as preamble sub-sequences belonging to the same preamble sequence in response to that a difference between the instance of time at which the preamble sub-sequence is detected in the current stage, and the instance of time at which the some preamble sub-sequence detected in the previous stage is below a preset difference threshold.
11. 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.
12. The non-transitory readable storage medium according to claim 11 , wherein the detection window is a Zadoff-Chu (ZC) sequence detection window.
13. The non-transitory readable storage medium according to claim 12 , wherein the ZC sequence detection window is a ZC sequence detection window of a same root sequence, or a ZC sequence detection window of different root sequences.
14. The non-transitory readable storage medium according to claim 11 , wherein the instances of time at which the respective preamble sub-sequences are detected in the detection window are detected at timing positions.
15. The non-transitory readable storage medium according to claim 11 , wherein the program codes are further configured to cause a computing device to:
determine an instance of time at which a preamble sub-sequence is detected in the current stage, and an instance of time at which some preamble sub-sequence as preamble sub-sequences belonging to the same preamble sequence in response to that a difference between the instance of time at which the preamble sub-sequence is detected in the current stage, and the instance of time at which the some preamble sub-sequence is detected in the previous stage is below a preset difference threshold.