CN-122027431-A - Reference signal generation method, reference signal generation device, storage medium and reference signal generation system

CN122027431ACN 122027431 ACN122027431 ACN 122027431ACN-122027431-A

Abstract

The application provides a method, a device, a storage medium and a system for generating a reference signal, wherein the method comprises the steps of obtaining a basic carrier index of a target basic carrier of the reference signal to be generated; the method comprises the steps of determining a subcarrier index set of a target basic carrier, determining a global sequence index corresponding to each subcarrier index according to the subcarrier index set, the basic carrier index and the total number of subcarriers contained in the target basic carrier, determining a first pilot frequency value of each global sequence index according to a preset global reference sequence, and determining a reference signal of the target basic carrier according to a plurality of first pilot frequency values. The application solves the problems of high peak-to-average power ratio of the aggregated signal and signal distortion caused by the same reference signals of different basic carriers in the existing multi-carrier aggregation.

Inventors

YANG JING
SUN LUKUAN
FENG XUELIN
LIU PAN
ZHU BIYING
QIAN MANLI
SHI JINGLIN

Assignees

北京中科晶上科技股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260414

Claims (10)

1. A method for generating a reference signal, comprising: acquiring a basic carrier index of a target basic carrier of a reference signal to be generated, wherein the basic carrier index represents a first position number of the target basic carrier in an aggregation bandwidth, and the aggregation bandwidth comprises a plurality of basic carriers; determining a subcarrier index set of the target basic carrier, wherein the subcarrier index set is a set of second position numbers of a plurality of subcarriers of the target basic carrier in the target basic carrier; Determining a global sequence index corresponding to each subcarrier index according to the subcarrier index set, the basic carrier index and the total number of subcarriers contained in the target basic carrier, wherein the global sequence index represents the position of the subcarrier in a preset global reference sequence; and determining a first pilot frequency value of each global sequence index according to the preset global reference sequence, and determining the reference signal of the target basic carrier according to a plurality of first pilot frequency values, wherein the first pilot frequency value is a signal value used for determining the position of the reference signal on the subcarrier.
2. The method of generating according to claim 1, wherein determining a global sequence index corresponding to each subcarrier index based on the subcarrier index set, the base carrier index, and a total number of subcarriers included in the target base carrier comprises: Determining a first product as a product of the base carrier index and the total number of subcarriers contained by the target base carrier; and determining the global sequence index corresponding to each subcarrier index as the sum of each subcarrier index and the first product.
3. The generating method according to claim 1, wherein after determining a first pilot value of each of the global sequence indexes from the preset global reference sequence, and determining the reference signal of the target base carrier from a plurality of the first pilot values, the method further comprises: Acquiring the total number of sub-carriers contained in the target basic carrier; Determining a center subcarrier index of a center position according to the total number of subcarriers; and setting the first pilot frequency value of the subcarrier corresponding to the central subcarrier index to zero.
4. The method of generating according to claim 1, wherein determining a first pilot value of each of the global sequence indexes according to the preset global reference sequence, and determining the reference signal of the target base carrier according to a plurality of the first pilot values, comprises: Determining each subcarrier index corresponding to each first pilot frequency value; And determining the reference signal of the target basic carrier according to each subcarrier index and each first pilot frequency value.
5. The method of generating of claim 1, wherein determining the set of subcarrier indices for the target base carrier comprises: Acquiring the total number of subcarriers contained in the target basic carrier; Determining a center subcarrier index according to the total number of subcarriers, wherein the center subcarrier index is an index of the subcarriers at the center position of the target basic carrier; determining a preliminary subcarrier index set of the target base carrier, the preliminary subcarrier index set including the indices of all the subcarriers of the target base carrier; and removing the central subcarrier index in the prepared subcarrier index set to obtain the subcarrier index set.
6. The method of generating of claim 1, wherein after determining the reference signal for the target base carrier from a plurality of the first pilot values, the method further comprises: calculating a peak-to-average power ratio of a transmission signal formed based on the reference signal; outputting the reference signal under the condition that the peak-to-average power ratio is lower than a preset peak-to-average power ratio; And correcting the reference signal to obtain the corrected reference signal under the condition that the peak-to-average power ratio is larger than or equal to the preset peak-to-average power ratio.
7. The method of generating of claim 6, wherein modifying the reference signal to obtain the modified reference signal comprises: performing offset processing on each global sequence index based on a preset target offset to obtain a plurality of corrected global sequence indexes; Determining a second pilot value of each of the modified global sequence indexes according to the global reference sequence; And determining the corrected reference signal of the target basic carrier according to the second pilot frequency values.
8. A reference signal generating apparatus, comprising: A first obtaining unit, configured to obtain a base carrier index of a target base carrier of a reference signal to be generated, where the base carrier index characterizes a first position number of the target base carrier in an aggregate bandwidth, and the aggregate bandwidth includes a plurality of base carriers; A first determining unit, configured to determine a subcarrier index set of the target base carrier, where the subcarrier index set is a set of second location numbers of a plurality of subcarriers of the target base carrier in the target base carrier; The second determining unit is configured to determine a global sequence index corresponding to each subcarrier index according to the subcarrier index set, the base carrier index and the total number of subcarriers contained in the target base carrier, where the global sequence index represents a position of the subcarrier in a preset global reference sequence; the second acquisition unit is configured to determine a first pilot value of each global sequence index according to a preset global reference sequence, and determine the reference signal of the target basic carrier according to a plurality of first pilot values, where the first pilot value is a signal value used for determining the position of the reference signal on the subcarrier.
9. A computer readable storage medium, characterized in that the computer readable storage medium comprises a stored program, wherein the program, when run, controls a device in which the computer readable storage medium is located to perform the method of any one of claims 1 to 7.
10. A reference signal generating system comprising one or more processors, memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising instructions for performing the method of any of claims 1-7.

Description

Reference signal generation method, reference signal generation device, storage medium and reference signal generation system Technical Field The present application relates to the field of wireless communication technologies, and in particular, to a reference signal generating method, a reference signal generating device, a computer readable storage medium, and a reference signal generating system. Background In a multi-carrier aggregation communication scenario, a system generally performs data transmission in cooperation through multiple base carriers, so as to improve spectrum utilization and transmission rate. The reference signal is used as an important signal in the communication process and is used for channel estimation, synchronization and related signal processing, so that the generation mode of the reference signal can directly influence the transmission performance of the system. However, in the prior art, in the multi-carrier aggregation scenario, the same reference signal generation manner is often adopted by different base carriers, so that the reference signals on the different base carriers are the same. Because the same reference signals on a plurality of basic carriers are easy to be subjected to in-phase superposition in the aggregation transmission process, the instantaneous peak power of the aggregation signals is increased, and the peak-to-average power ratio of the aggregation signals is higher. The excessive peak-to-average power ratio not only can reduce the working efficiency of a transmitter power amplifier, but also can easily cause the problems of signal topping, nonlinear distortion and the like, and finally, the signal transmission quality and the system communication performance are affected. Therefore, how to perform optimal generation on the reference signal in the multi-carrier aggregation scenario becomes a technical problem to be solved in the art. Disclosure of Invention The application aims to provide a reference signal generation method, a reference signal generation device, a computer readable storage medium and a reference signal generation system, which at least solve the problems that the peak-to-average power ratio of an aggregated signal is higher and signal distortion is caused by identical reference signals of different basic carriers in the existing multi-carrier aggregation. In order to achieve the above object, according to one aspect of the present application, there is provided a method for generating a reference signal, including obtaining a base carrier index of a target base carrier of a reference signal to be generated, the base carrier index characterizing a first position number of the target base carrier in an aggregate bandwidth, the aggregate bandwidth including a plurality of the base carriers, determining a subcarrier index set of the target base carrier, the subcarrier index set being a set of second position numbers of a plurality of subcarriers of the target base carrier within the target base carrier, determining a global sequence index corresponding to each subcarrier index according to the subcarrier index set, the base carrier index and a total number of subcarriers included in the target base carrier, the global sequence index characterizing a position of the subcarrier in a preset global reference sequence, determining a first pilot value of each global sequence index according to the preset global reference sequence, and determining the reference signal of the target base carrier according to the plurality of first pilot values, the first pilot value being a signal value for determining the position of the reference signal on the subcarriers. Optionally, determining the global sequence index corresponding to each subcarrier index according to the subcarrier index set, the basic carrier index and the total number of subcarriers contained in the target basic carrier comprises determining that a first product is a product of the basic carrier index and the total number of subcarriers contained in the target basic carrier, and determining that the global sequence index corresponding to each subcarrier index is a sum of each subcarrier index and the first product. Optionally, after determining the first pilot frequency value of each global sequence index according to the preset global reference sequence and determining the reference signal of the target basic carrier according to a plurality of first pilot frequency values, the method further comprises the steps of obtaining the total number of sub-carriers contained in the target basic carrier, determining a central sub-carrier index of a central position according to the total number of sub-carriers, and setting the first pilot frequency value of the sub-carrier corresponding to the central sub-carrier index to zero. Optionally, determining a first pilot frequency value of each global sequence index according to the preset global reference sequence, and determining the reference signal