Method and device for detection in cell random access

1. A method for detection in cell random access, comprising:

in a Long Term Evolution (LTE) protocol, extending an original format used for a random access procedure to change a cyclic prefix range defined by the original format, to obtain an enhanced format used for the random access procedure;

in a process of extracting a time-domain signal of a random access channel, extracting and splitting input data into time-domain antenna data in the original format and time-domain antenna data in the enhanced format, and performing signal extraction processing respectively on the time-domain antenna data in the original format and the time-domain antenna data in the enhanced format; and

in a process of detection, detecting the time-domain antenna data in the original format and the time-domain antenna data in the enhanced format after the signal extraction processing to obtain detection information,

wherein performing the signal extraction processing respectively on the time-domain antenna data in the original format and the time-domain antenna data in the enhanced format respectively comprises:

performing filter extraction, two-dimensional Fourier transform ( 2 DFT), reference sequence generation, frequency domain correlation, and inverse fast Fourier transform (IFFT) respectively on the time-domain antenna data in the original format and the time-domain antenna data in the enhanced format.

2. The method according to claim 1 , wherein the extending the original format used for the random access procedure to change the cyclic prefix range defined by the original format comprises:

based on the original format of the Long Term Evolution LTE protocol, increasing the cyclic prefix range defined by the original format to obtain the enhanced format, to obtain a larger cell coverage radius.

3. The method according to claim 1 , wherein the obtaining the detection information comprises:

detecting whether there is information about a mobile station MS requesting access, and reporting the obtained detection information to a central processing unit to implement scheduling.

4. The method according to claim 1 , wherein the performing the signal extraction processing on the time-domain antenna data in the original format and the time-domain antenna data in the enhanced format respectively comprises:

performing the signal extraction processing on the time-domain antenna data in the original format and the time-domain antenna data in the enhanced format in parallel;

or, buffering the time-domain antenna data in the original format and the time-domain antenna data in the enhanced format in advance, and then performing the signal extraction processing on the time-domain antenna data in the original format and the time-domain antenna data in the enhanced format successively in series.

5. A device for detection in cell random access, wherein the device comprises at least one processor operating in conjunction with a non-transitory storage medium and a plurality of units, the plurality of units comprise:

an extension setting unit, configured to: in a Long Term Evolution (LTE) protocol, extend an original format used for a random access procedure to change a cyclic prefix range defined by the original format, to obtain an enhanced format used for the random access procedure;

a random access channel time-domain signal extraction unit, configured to: in a process of extracting a time-domain signal of a random access channel, extract and split input data into time-domain antenna data in the original format and time-domain antenna data in the enhanced format;

a time-domain antenna data processing unit, configured to respectively perform signal extraction processing on the time-domain antenna data in the original format and the time-domain antenna data in the enhanced format that are obtained by extraction and splitting of the random access channel time-domain signal extraction unit; and

a detection unit, configured to: in a process of detection, respectively detect the time-domain antenna data in the original format and the time-domain antenna data in the enhanced format to obtain detection information,

wherein the time-domain antenna data processing unit further performs filter extraction, two-dimensional Fourier transform ( 2 DFT), reference sequence generation, frequency domain correlation, and inverse fast Fourier transform (IFFT) on the time-domain antenna data in the original format and the time-domain antenna data in the enhanced format respectively.

6. The device according to claim 5 , wherein the device further comprises:

a detection information processing unit, configured to detect whether there is information about a mobile station MS requesting access, and report the obtained detection information to a central processing unit to implement scheduling.

7. The device according to claim 5 , wherein the device comprises two sets of time-domain antenna data processing units, configured to process the time-domain antenna data in the original format and the time-domain antenna data in the enhanced format in parallel respectively.

8. The device according to claim 5 , wherein the device comprises:

a time-domain antenna data buffering unit, configured to buffer the time-domain antenna data in the original format and the time-domain antenna data in the enhanced format in advance, wherein the time-domain antenna data processing unit then performs the signal extraction processing on the time-domain antenna data in the original format and the time-domain antenna data in the enhanced format successively in series.

9. A base station, comprising a hardware processor and a non-transitory storage medium accessible to the processor, the base station is configured to:

extend an original format used for a random access procedure to change a cyclic prefix range defined by the original format;

obtain an enhanced format used for the random access procedure;

extract and split input data into time-domain antenna data in the original format and time-domain antenna data in the enhanced format;

wherein the base station is configured to respectively detect the time-domain antenna data in the original format and the time-domain antenna data in the enhanced format to obtain detection information; and

respectively perform filter extraction, two-dimensional Fourier transform ( 2 DFT), reference sequence generation, frequency domain correlation, and inverse fast Fourier transform (IFFT) on the time-domain antenna data in the original format and the time-domain antenna data in the enhanced format.

10. The base station according to claim 9 , wherein the base station is configured to detect whether there is information about a mobile station (MS) requesting access, and report the obtained detection information to a central processing unit to implement scheduling.

11. The base station according to claim 9 , wherein the base station is configured to respectively process the time-domain antenna data in the original format and the time-domain antenna data in the enhanced format in parallel.

12. The base station according to claim 11 , wherein the base station is configured to perform the signal extraction processing on the time-domain antenna data in the original format and the time-domain antenna data in the enhanced format successively in series.

13. The base station according to claim 9 , wherein the base station is configured to buffer the time-domain antenna data in the original format and the time-domain antenna data in the enhanced format in advance.