Method and device for configuring a pilot

Patent metadata

Field	Value
Publication number	US-10326574-B2
Application number	US-201415511446-A
Country	US
Kind code	B2
Filing date	Dec 10, 2014
Priority date	Sep 15, 2014
Publication date	Jun 18, 2019
Grant date	Jun 18, 2019

Abstract

Provided are a method and device for configuring a pilot, wherein the method includes: configuring a user pilot according to subcarrier indexes of REs occupied by the user pilot, wherein the subcarrier indexes of the REs occupied by the user pilot are in subcarrier indexes of REs occupied by user data on PUSCH, and include the following pilot parameters: REstart and RBnumber, and further include REset and/or REinterval; and adjusting power of a pilot at a transmitting end and performing pilot resource mapping according to Powerfactor corresponding to the pilot parameters, where Powerfactor=(REset+REinterval)/REset. Through the disclosure, the problem that a pilot design scheme of the PUSCH in the related art is poor on flexibility is solved.

First claim

What is claimed is:

1. A method for configuring a pilot, comprising:
configuring a user pilot according to subcarrier indexes of Resource Elements (REs) occupied by the user pilot, wherein the subcarrier indexes of the REs occupied by the user pilot are in subcarrier indexes of REs occupied by user data on Physical Uplink Shared Channel (PUSCH), and comprise the following pilot parameters:
REstart and RBnumber, and further comprise REset and REinterval, wherein the REstart is a subcarrier index of the first RE in the REs occupied by symbols of the user pilot; the RBnumber is a total number of Resource Blocks (RBs) of symbols of the user data; the REset is a minimum number of REs, of which positions are continuous in a frequency-domain, occupied by the user pilot; and the REinterval is the number of subcarriers in an interval between two REsets, which are closest in the frequency-domain, of the user pilot; and
adjusting power of a pilot at a transmitting end and performing pilot resource mapping according to Powerfactor corresponding to the pilot parameters, where Powerfactor=(REset+REinterval)/REset.

2. The method as claimed in claim 1 , wherein when the REinterval is 0, the subcarrier indexes of the REs occupied by the user pilot do not comprise the REset, and the Powerfactor is 1.

3. The method as claimed in claim 1 , wherein configuring the user pilot according to the subcarrier indexes of the REs occupied by the user pilot comprises:
in candidate pilot configuration provided by a system, choosing pilot configuration matching with time-frequency resource allocated for a user corresponding to the user data.

4. The method as claimed in claim 3 , wherein
in the candidate pilot configuration provided by the system, pilot configuration, of which the REinterval is 0, corresponds to traditional time-frequency resource allocated for the user.

5. The method as claimed in claim 1 , wherein adjusting the power of the pilot at the transmitting end and performing the pilot resource mapping according to the Powerfactor corresponding to the pilot parameters comprises:
according to the number of REs actually used by a user, generating, at the transmitting end, a pilot code with a length corresponding to the number of the REs actually used by the user;
multiplying the pilot code by the Powerfactor to obtain a pilot code whose power is adjusted, and performing, according to a pilot pattern, the pilot resource mapping for the pilot code whose power is adjusted.

6. A device for configuring a pilot, comprising:
a configuring component, configured to configure a user pilot according to subcarrier indexes of REs occupied by the user pilot, wherein the subcarrier indexes of the REs occupied by the user pilot are in subcarrier indexes of REs occupied by user data on PUSCH, and comprise the following pilot parameters:
REstart and RBnumber, and further comprise REset and REinterval, wherein the REstart is a subcarrier index of the first RE in the REs occupied by symbols of the user pilot; the RBnumber is a total number of RBs of symbols of the user data; the REset is a minimum number of REs, of which positions are continuous in a frequency-domain, occupied by the user pilot; and the REinterval is the number of subcarriers in an interval between two REsets, which are closest in the frequency-domain, of the user pilot; and
an adjusting component, configured to adjust power of a pilot at a transmitting end and perform pilot resource mapping according to Powerfactor corresponding to the pilot parameters, where Powerfactor=(REset+REinterval)/REset.

7. The device as claimed in claim 6 , wherein when the REinterval is 0, the subcarrier indexes of the REs occupied by the user pilot do not comprise the REset, and the Powerfactor is 1.

8. The device as claimed in claim 6 , wherein the configuring component is configured to choose, in candidate pilot configuration provided by a system, pilot configuration matching with time-frequency resource of occupied by the user data.

9. The device as claimed in claim 8 , wherein
in the candidate pilot configuration provided by the system, pilot configuration, of which the REinterval is 0, corresponds to traditional time-frequency resource occupied by the user data.

10. The device as claimed in claim 6 , wherein the adjusting component comprises:
a generating element, configured to, according to the number of REs actually used by a user, generate, at the transmitting end, a pilot code with a length corresponding to the number of the REs actually used by the user; and
a mapping element, configured to multiply the pilot code by the Powerfactor to obtain a pilot code whose power is adjusted, and perform, according to a pilot pattern, the pilot resource mapping for the pilot code whose power is adjusted.

11. The method as claimed in claim 2 , wherein adjusting the power of the pilot at the transmitting end and performing the pilot resource mapping according to the Powerfactor corresponding to the pilot parameters comprises:
according to the number of REs actually used by a user, generating, at the transmitting end, a pilot code with a length corresponding to the number of the REs actually used by the user;
multiplying the pilot code by the Powerfactor to obtain a pilot code whose power is adjusted, and performing, according to a pilot pattern, the pilot resource mapping for the pilot code whose power is adjusted.

12. The method as claimed in claim 3 , wherein adjusting the power of the pilot at the transmitting end and performing the pilot resource mapping according to the Powerfactor corresponding to the pilot parameters comprises:
according to the number of REs actually used by a user corresponding to the user data, generating, at the transmitting end, a pilot code with a length corresponding to the number of the REs actually used by the user;
multiplying the pilot code by the Powerfactor to obtain a pilot code whose power is adjusted, and performing, according to a pilot pattern, the pilot resource mapping for the pilot code whose power is adjusted.

13. The method as claimed in claim 4 , wherein adjusting the power of the pilot at the transmitting end and performing the pilot resource mapping according to the Powerfactor corresponding to the pilot parameters comprises:
according to the number of REs actually used by a user corresponding to the user data, generating, at the transmitting end, a pilot code with a length corresponding to the number of the REs actually used by the user;
multiplying the pilot code by the Powerfactor to obtain a pilot code whose power is adjusted, and performing, according to a pilot pattern, the pilot resource mapping for the pilot code whose power is adjusted.

14. The device as claimed in claim 7 , wherein the adjusting component comprises:
a generating element, configured to, according to the number of REs actually used by a user corresponding to the user data, generate, at the transmitting end, a pilot code with a length corresponding to the number of the REs actually used by the user; and
a mapping element, configured to multiply the pilot code by the Powerfactor to obtain a pilot code whose power is adjusted, and perform, according to a pilot pattern, the pilot resource mapping for the pilot code whose power is adjusted.

15. The device as claimed in claim 8 , wherein the adjusting component comprises:
a generating element, configured to, according to the number of REs actually used by a user corresponding to the user data, generate, at the transmitting end, a pilot code with a length corresponding to the number of the REs actually used by the user; and
a map

Assignees

• Zte Corp

Inventors

• Zhang Xin
• Wang Wenfang

Classifications

• H04L5/0007

  the frequencies being orthogonal, e.g. OFDM(A) or DMT · CPC title

• H04L5/0051

  of dedicated pilots, i.e. pilots destined for a single user or terminal · CPC title

• H04L27/2613 Primary

  Structure of the reference signals · CPC title

• H04L5/0048 Primary

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title