Information processing method and apparatus

• US 9,887,829 B2
• Filed: 12/30/2015
• Issued: 02/06/2018
• Est. Priority Date: 07/02/2013
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Cai, Meng, Qing, Huaping, Liu, Yu, Jiang, Hongli, Liu, Qiao
• Primary Examiner(s): Adhami, Mohammad
• Assistant Examiner(s): Kumar, Shailendra
• Application Number:
  US14/983,841
• Publication Number:
  US 20160112179A1
• Time in Patent Office: 769 Days
• CPC Class Codes: H04L 25/0226 sounding signals per se
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04L 7/0033 Correction by delay

Abstract

The present invention discloses an information processing method and apparatus, including: obtaining a local to-be-transmitted signal by using a local transmitter, and inserting first pilots and second pilots, where the first pilots are inserted from a first position of the local to-be-transmitted signal, the second pilots are inserted from a second position of the local to-be-transmitted signal; obtaining a local transmit signal; obtaining a peer transmit signal, where the peer transmit signal is sent after third pilots and fourth pilots are inserted, the third pilots are inserted from a third position of the peer transmit signal, the fourth pilots are inserted from a fourth position of the peer transmit signal, the first pilot is orthogonal to the fourth pilot, and the second pilot is orthogonal to the third pilot; and parsing the local transmit signal and the peer transmit signal by using the local receiver.

Claims

1. An information processing method, the method comprising:

obtaining a local to-be-transmitted signal by using a local transmitter, and inserting first pilots and second pilots into the local to-be-transmitted signal and transmitting the signal, wherein the first pilots are inserted from a first position of the local to-be-transmitted signal according to a first time interval, the second pilots are inserted from a second position of the local to-be-transmitted signal according to a second time interval, and the first position and the second position are separated by first preset duration, wherein the first preset duration is specifically a sum of a transmission delay of a local transmit signal relative to a peer receiver and a transmission delay of a peer transmit signal relative to the peer receiver;

obtaining a local transmit signal by using a local receiver;

obtaining a peer transmit signal by using the local receiver, wherein the peer transmit signal is sent after third pilots and fourth pilots are inserted, the third pilots are inserted from a third position of the peer transmit signal according to a third time interval, the fourth pilots are inserted from a fourth position of the peer transmit signal according to a fourth time interval, the third position and the fourth position are separated by second preset duration, the first pilot is orthogonal to the fourth pilot, and the second pilot is orthogonal to the third pilot, wherein the second preset duration is a sum of a transmission delay of the local transmit signal relative to the local receiver and a transmission delay of the peer transmit signal relative to the local receiver;

parsing the local transmit signal and the peer transmit signal by using the local receiver; and

performing delay compensation;

on the local to-be transmitted signal, or

on the pilot bearing signal, or

by using a local-to-peer equalization coefficient.

2. The method according to claim 1, wherein inserting first pilots and second pilots into the local to-be-transmitted signal and transmitting the signal comprises:

collecting a local-to-local equalization coefficient by using the local transmitter, and performing first delay compensation on the local to-be-transmitted signal to obtain a local compensation signal, wherein the local-to-local equalization coefficient is a delay coefficient of the local receiver relative to the local transmitter; and

inserting the first pilots and the second pilots into the local compensation signal and transmitting the signal.

3. The method according to claim 1, wherein inserting first pilots and second pilots into the local to-be-transmitted signal and transmitting the signal further comprises:

inserting the first pilots and the second pilots into the local to-be-transmitted signal to obtain a pilot bearing signal; and

collecting a local-to-local equalization coefficient by using the local transmitter, and performing first delay compensation on the pilot bearing signal and transmitting the signal.

4. The method according to claim 1, wherein inserting first pilots and second pilots into the local to-be-transmitted signal and transmitting the signal further comprises:

collecting a local-to-local equalization coefficient by using the local transmitter while the first pilots and the second pilots are inserted into the local to-be-transmitted signal, and performing first delay compensation on the local to-be-transmitted signal and transmitting the signal.

5. The method according to claim 1, wherein the peer transmit signal comprises:

a transmit signal into which the third pilots and the fourth pilots are inserted after the peer transmitter performs second delay compensation by using the local-to-peer equalization coefficient, wherein the local-to-peer equalization coefficient is a delay coefficient of the local receiver relative to the peer transmitter;

or

a transmit signal on which the peer transmitter performs second delay compensation by using the local-to-peer equalization coefficient after the third pilots and the fourth pilots are inserted;

or

a transmit signal on which the peer transmitter performs second delay compensation by using the local-to-peer equalization coefficient while the third pilots and the fourth pilots are inserted.

6. The method according to claim 1, wherein obtaining a local to-be-transmitted signal by using a local transmitter, and inserting first pilots and second pilots into the local to-be-transmitted signal comprises:

obtaining the local to-be-transmitted signal by using the local transmitter, and sequentially inserting the first pilots into the local to-be-transmitted signal from the first position according to the first time interval, so that the first time interval exists between every two first pilots in the local to-be-transmitted signal, wherein the first position is a frame header position of the first frame of the local to-be-transmitted signal; and

sequentially inserting the second pilots into the local to-be-transmitted signal from the second position according to the second time interval, so that the second time interval exists between every two second pilots in each frame of the local to-be-transmitted signal, and that the second time interval also exists between a second pilot at a frame trailer of the i^th frame of the local to-be-transmitted signal and a second pilot at a frame header of the i+1^th frame of the local to-be-transmitted signal, wherein i is a positive integer.

7. The method according to claim 6, further comprising:

inserting the third pilots from a third position of the first frame of the peer transmit signal according to the third time interval, so that the third time interval exists between every two third pilots in the peer transmit signal, wherein the third position is a frame header position of the first frame of the peer transmit signal.

8. The method according to claim 6, further comprising:

inserting the fourth pilots from the fourth position according to the fourth time interval, so that the fourth time interval exists between every two fourth pilots in each frame of the peer transmit signal, and that the fourth time interval also exists between a fourth pilot at a frame trailer of the i^th frame of the peer transmit signal and a fourth pilot at a frame header of the i+1^th frame of the peer transmit signal.

9. The method according to claim 1, wherein the first pilot is an original pilot of the local transmitter, and the second pilot is a newly added pilot of the local transmitter.

10. The method according to claim 1, wherein the third pilot is an original pilot of the peer transmitter, and the fourth pilot is a newly added pilot of the peer transmitter.

11. An information processing apparatus, comprising:

a local transmitter, configured to obtain a local to-be-transmitted signal, and insert first pilots and second pilots into the local to-be-transmitted signal and transmit the signal, wherein the first pilots are inserted from a first position of the local to-be-transmitted signal according to a first time interval, the second pilots are inserted from a second position of the local to-be-transmitted signal according to a second time interval, and the first position and the second position are separated by first preset duration, wherein the first preset duration is specifically a sum of a transmission delay of a local transmit signal relative to a peer receiver and a transmission delay of a peer transmit signal relative to the peer receiver; and

a local receiver, configured to;

obtain a local transmit signal,

obtain a peer transmit signal, wherein the peer transmit signal is sent after third pilots and fourth pilots are inserted, the third pilots are inserted from a third position of the peer transmit signal according to a third time interval, the fourth pilots are inserted from a fourth position of the peer transmit signal according to a fourth time interval, the third position and the fourth position are separated by second preset duration, the first pilot is orthogonal to the fourth pilot, and the second pilot is orthogonal to the third pilot, wherein the second preset duration is a sum of a transmission delay of the local transmit signal relative to the local receiver and a transmission delay of the peer transmit signal relative to the local receiver,

parse the local transmit signal and the peer transmit signal, and

perform delay compensation;

on the local to-be transmitted signal;

or

on the pilot bearing signal;

or

by using a local-to-peer equalization coefficient.

12. The apparatus according to claim 11, wherein the local transmitter is further configured to:

collect a local-to-local equalization coefficient by using the local transmitter, and perform first delay compensation on the local to-be-transmitted signal to obtain a local compensation signal, wherein the local-to-local equalization coefficient is a delay coefficient of the local receiver relative to the local transmitter; and

insert the first pilots and the second pilots into the local compensation signal and transmit the signal.

13. The apparatus according to claim 11, wherein the local transmitter is further configured to:

insert the first pilots and the second pilots into the local to-be-transmitted signal to obtain a pilot bearing signal; and

collect a local-to-local equalization coefficient by using the local transmitter, and perform first delay compensation on the pilot bearing signal and transmit the signal.

14. The apparatus according to claim 11, wherein the local transmitter is further configured to:

collect a local-to-local equalization coefficient by using the local transmitter while the first pilots and the second pilots are inserted into the local to-be-transmitted signal, and perform first delay compensation on the local to-be-transmitted signal and transmit the signal.

15. The apparatus according to claim 11, wherein the peer transmit signal comprises:

a transmit signal into which the third pilots and the fourth pilots are inserted after the peer transmitter performs second delay compensation by using the local-to-peer equalization coefficient, wherein the local-to-peer equalization coefficient is a delay coefficient of the local receiver relative to the peer transmitter;

or

a transmit signal on which the peer transmitter performs second delay compensation by using the local-to-peer equalization coefficient after the third pilots and the fourth pilots are inserted;

or

a transmit signal on which the peer transmitter performs second delay compensation by using the local-to-peer equalization coefficient while the third pilots and the fourth pilots are inserted.

16. The apparatus according to claim 11, wherein the local transmitter is configured to:

obtain the local to-be-transmitted signal, and sequentially insert the first pilots into the local to-be-transmitted signal from the first position according to the first time interval, so that the first time interval exists between every two first pilots in the local to-be-transmitted signal, wherein the first position is a frame header position of the first frame of the local to-be-transmitted signal; and

sequentially insert the second pilots into the local to-be-transmitted signal from the second position according to the second time interval, so that the second time interval exists between every two second pilots in each frame of the local to-be-transmitted signal, and that the second time interval also exists between a second pilot at a frame trailer of the i^th frame of the local to-be-transmitted signal and a second pilot at a frame header of the i+1^th frame of the local to-be-transmitted signal, wherein i is a positive integer.

17. The apparatus according to claim 16, wherein the local transmitter is further configured to:

insert the third pilots from a third position of the first frame of the peer transmit signal according to the third time interval, so that the third time interval exists between every two third pilots in the peer transmit signal, wherein the third position is a frame header position of the first frame of the peer transmit signal.

18. The apparatus according to claim 16, wherein the local transmitter is further configured to:

insert the fourth pilots from the fourth position according to the fourth time interval, so that the fourth time interval exists between every two fourth pilots in each frame of the peer transmit signal, and that the fourth time interval also exists between a fourth pilot at a frame trailer of the i^th frame of the peer transmit signal and a fourth pilot at a frame header of the i+1^th frame of the peer transmit signal.

19. The apparatus according to claim 11, wherein the first pilot is an original pilot of the local transmitter, and the second pilot is a newly added pilot of the local transmitter.

20. The apparatus according to claim 11, wherein the third pilot is an original pilot of the peer transmitter, and the fourth pilot is a newly added pilot of the peer transmitter.