CN115967598A - Data transmission method, device, base station, terminal and storage medium - Google Patents

Data transmission method, device, base station, terminal and storage medium Download PDF

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Publication number
CN115967598A
CN115967598A CN202111175908.2A CN202111175908A CN115967598A CN 115967598 A CN115967598 A CN 115967598A CN 202111175908 A CN202111175908 A CN 202111175908A CN 115967598 A CN115967598 A CN 115967598A
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China
Prior art keywords
reference signal
terminal
base station
information
frequency offset
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CN202111175908.2A
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Chinese (zh)
Inventor
王飞
王大鹏
胡南
李男
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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Priority to CN202111175908.2A priority Critical patent/CN115967598A/en
Priority to PCT/CN2022/124048 priority patent/WO2023056965A1/en
Publication of CN115967598A publication Critical patent/CN115967598A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application discloses a data transmission method, a device, a base station, a terminal and a storage medium, wherein the method comprises the following steps: a base station sends a first reference signal and a second reference signal to a terminal; receiving first information reported by a terminal; the first information represents frequency offset between a first reference signal and a second reference signal measured by the terminal; and transmitting the PDCCH and/or the PDSCH to the terminal based on the first information.

Description

Data transmission method, device, base station, terminal and storage medium
Technical Field
The present application relates to the field of wireless technologies, and in particular, to a data transmission method, an apparatus, a base station, a terminal, and a storage medium.
Background
In a high-speed rail scene, the terminal may receive reference signals sent from two adjacent Transmission and Reception Points (TRPs), however, the doppler frequency offset difference between the two reference signals is large, for example, the doppler frequency offsets of the two reference signals sent by the two TRPs received by the terminal are +1.6kHz and-1.6 kHz, respectively, which may cause the demodulation performance of the terminal to be poor.
Disclosure of Invention
In order to solve the related technical problems, embodiments of the present application provide a data transmission method, an apparatus, a base station, a terminal, and a storage medium.
The technical scheme of the embodiment of the application is realized as follows:
the embodiment of the application provides a data transmission method, which is applied to a base station and comprises the following steps:
transmitting a first reference signal and a second reference signal to a terminal;
receiving first information reported by a terminal; the first information represents frequency offset between a first reference signal and a second reference signal measured by the terminal;
and transmitting a Physical Downlink Control Channel (PDCCH) and/or a Physical Downlink Shared Channel (PDSCH) to the terminal based on the first information.
In the above scheme, the first Reference Signal is a first Tracking Reference Signal (TRS), and the second Reference Signal is a second TRS.
In the foregoing solution, before the receiving the first information reported by the terminal, the method further includes:
indicating a first Transmission Configuration Indication (TCI) state and a second TCI state to the terminal; wherein the first TCI state is associated with the first reference signal; the second TCI state is associated with the second reference signal; alternatively, the first and second electrodes may be,
indicating a third TCI status to the terminal; wherein the third TCI state is associated with both the first reference signal and the second reference signal.
In the above solution, before receiving the first information reported by the terminal, the method further includes:
sending a first configuration to the terminal; wherein, the first and the second end of the pipe are connected with each other,
the first configuration is configured to configure the terminal to report a frequency offset characterizing the first reference signal relative to the second reference signal, and/or to characterize the frequency offset of the second reference signal relative to the first reference signal.
In the foregoing solution, before the receiving the first information reported by the terminal, the method further includes:
sending a second configuration to the terminal; wherein, the first and the second end of the pipe are connected with each other,
the second configuration is configured to configure the terminal to report the first information in one of the following manners:
reporting periodically;
reporting the semi-static scheduling;
and reporting the trigger condition.
In the above scheme, the first information is represented by a bit value of a set number of bits.
The embodiment of the present application further provides a data transmission method, applied to a terminal, including:
receiving a first reference signal and a second reference signal sent by a base station;
first information reported to a base station; the first information represents frequency offset between a first reference signal and a second reference signal measured by the terminal.
In the foregoing scheme, the first reference signal is a first TRS, and the second reference signal is a second TRS.
In the foregoing solution, before the first information reported to the base station, the method further includes:
receiving a first TCI state and a second TCI state indicated by the base station; wherein the first TCI state is associated with the first reference signal; the second TCI state is associated with the second reference signal; alternatively, the first and second liquid crystal display panels may be,
receiving a third TCI status indicated by the base station; wherein the third TCI state is associated with the first reference signal and the second reference signal simultaneously.
In the foregoing solution, before the first information reported to the base station, the method further includes:
receiving a first configuration sent by the base station; wherein, the first and the second end of the pipe are connected with each other,
the first configuration is configured to configure the terminal to report a frequency offset representing the frequency offset of the first reference signal relative to the second reference signal, and/or to represent the frequency offset of a signal sent by the second reference signal relative to the first reference signal.
In the above solution, before the first information reported to the base station, the method further includes:
receiving a second configuration sent by the base station; wherein the content of the first and second substances,
the second configuration is configured to configure the terminal to report the first information in one of the following manners:
reporting periodically;
reporting semi-static scheduling;
and reporting a trigger condition.
In the above scheme, the first information is represented by a bit value of a set number of bits.
An embodiment of the present application further provides a data transmission device, including:
a first transmitting unit, configured to transmit a first reference signal and a second reference signal to a terminal;
the first receiving unit is used for receiving first information reported by the terminal; the first information represents frequency offset between a first reference signal and a second reference signal measured by the terminal;
and a second transmitting unit, configured to transmit the PDCCH and/or the PDSCH to the terminal based on the first information.
An embodiment of the present application further provides a data transmission apparatus, including:
a second receiving unit, configured to receive a first reference signal and a second reference signal sent by a base station;
a first reporting unit, configured to report first information to a base station; the first information represents frequency offset between a first reference signal and a second reference signal measured by the terminal.
An embodiment of the present application further provides a base station, including: a first processor and a first communication interface; wherein the content of the first and second substances,
the first communication interface is used for sending a first reference signal and a second reference signal to a terminal; receiving first information reported by a terminal; the first information represents frequency offset between a first reference signal and a second reference signal measured by the terminal; and transmitting the PDCCH and/or the PDSCH to the terminal based on the first information.
An embodiment of the present application further provides a terminal, including: a second processor and a second communication interface; wherein, the first and the second end of the pipe are connected with each other,
the second communication interface is used for receiving a first reference signal and a second reference signal sent by a base station; the first information is reported to the base station; the first information represents frequency offset between a first reference signal and a second reference signal measured by the terminal.
An embodiment of the present application further provides a base station, including: a first processor and a first memory for storing a computer program capable of running on the processor,
the first processor is configured to execute the steps of any data transmission method of the base station side when the computer program is run.
An embodiment of the present application further provides a terminal, including: a second processor and a second memory for storing a computer program capable of running on the processor,
the second processor is configured to execute the steps of any data transmission method of the terminal side when the computer program is run.
An embodiment of the present application further provides a storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the steps of any one of the data transmission methods.
In the embodiment of the application, the base station sends the first reference signal and the second reference signal to the terminal, the terminal reports the measured frequency offset between the first reference signal and the second reference signal to the base station, and the base station sends the PDCCH and/or the PDSCH to the terminal based on the measured frequency offset reported by the terminal. Based on the above scheme, the base station can pre-compensate the downlink doppler frequency of the terminal, so that in a scenario where the doppler frequency offset difference between multiple reference signals received by the terminal is large, for example, when the terminal is in a high-speed traveling state, the doppler frequency offset when the PDCCH and/or PDSCH sent subsequently reaches the terminal can be the same through the frequency pre-compensation, and thus the demodulation performance of the terminal can be effectively improved.
Drawings
Fig. 1 is a schematic flow chart of a data transmission method according to an embodiment of the present application;
fig. 2 is a schematic flow chart of another data transmission method according to an embodiment of the present application;
FIG. 3 is a schematic view of an application embodiment of the present application;
fig. 4 is a schematic structural diagram of a data transmission device according to an embodiment of the present application;
FIG. 5 is a schematic structural diagram of another data transmission apparatus according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a base station according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a terminal according to an embodiment of the present application.
Detailed Description
When the terminal is in a high-speed traveling state, for example, in a high-speed rail scene, the terminal may receive reference signals from two adjacent TRPs, however, the doppler frequency offset difference between the two reference signals is large. For example, the doppler frequency offsets of the reference signals transmitted by the two TRPs received by the terminal are +1.6kHz and-1.6 kHz, respectively, which may cause the demodulation performance of the terminal to be poor.
Based on this, in various embodiments of the present application, a base station sends a first reference signal and a second reference signal to a terminal, the terminal reports a frequency offset between the first reference signal and the second reference signal obtained by measurement to the base station, and the base station sends a PDCCH and/or a PDSCH to the terminal based on the frequency offset obtained by measurement reported by the terminal. Based on the above scheme, the base station can pre-compensate the downlink doppler frequency of the terminal, so that in a scenario where the doppler frequency offset difference between multiple reference signals received by the terminal is large, for example, when the terminal is in a high-speed traveling state, the doppler frequency offset when the PDCCH and/or PDSCH sent subsequently reaches the terminal can be the same through the frequency pre-compensation, and thus the demodulation performance of the terminal can be effectively improved.
The present application will be described in further detail with reference to the drawings and examples.
An embodiment of the present application provides a data transmission method, which is applied to a base station, and as shown in fig. 1, the method includes:
step 101: and transmitting the first reference signal and the second reference signal to the terminal.
Here, the base station transmits two reference signals to the terminal, and the two reference signals are transmitted through transmission points disposed at different geographical locations. In practical applications, the reference signal transmitted by the base station may be a TRS, and the TRSs are transmitted based on two TRPs, respectively. Therefore, in an embodiment, the first reference signal is a first TRS, and the second reference signal is a second TRS, where the first TRS is transmitted by the first TRP and the second TRS is transmitted by the second TRP.
Step 102: receiving first information reported by a terminal; the first information represents frequency offset between a first reference signal and a second reference signal measured by the terminal.
Because the distance or the position relation between the terminal and the transmitting positions of the two reference signals is different, the terminal measures the frequency of the received reference signals, and a measurement result of the frequency deviation between the first reference signal and the second reference signal can be obtained. For example, when the terminal is in the middle of two TRPs, doppler frequency offsets of TRSs from the two TRPs are +1.6GHz and-1.6 GHz, respectively, in the 3.5GHz band. Here, after measuring the frequency offset between the first reference signal and the second reference signal, the terminal reports the measured frequency offset to the base station.
Step 103: and transmitting the PDCCH and/or the PDSCH to the terminal based on the first information.
Here, the frequency offset between the first reference signal and the second reference signal is obtained based on the terminal measurement, and the base station performs frequency pre-compensation when the corresponding transmission point transmits the PDCCH and/or the PDSCH, so that the frequency offset is the same or in a negligible range when the PDCCH and/or the PDSCH transmitted by the two transmission points reach the terminal. Specifically, the base station may choose to perform frequency pre-compensation at one of the two transmission points, or both transmission points may transmit PDCCH and/or PDSCH. Therefore, the Doppler frequency offset of the PDCCH and/or the PDSCH sent by the base station subsequently when the PDCCH and/or the PDSCH reach the terminal is the same or almost the same, so that the demodulation performance of the terminal can be effectively improved.
In an embodiment, before receiving the first information reported by the terminal, the method further includes:
indicating a first TCI status and a second TCI status to the terminal; wherein the first TCI state is associated with the first reference signal; the second TCI state is associated with the second reference signal; alternatively, the first and second electrodes may be,
indicating a third TCI status to the terminal; wherein the third TCI state is associated with both the first reference signal and the second reference signal.
Here, the base station indicates to the terminal a first TCI state (TCI state) that correlates information of the first reference signal and a second TCI state that correlates information of the second reference signal, such that the base station informs the terminal of using the same beam or spatial filter on the downlink transmission as the first reference signal correlated to the first TCI state through the first TCI state and informs the terminal of using the same beam or spatial filter on the downlink transmission as the second reference signal correlated to the second TCI state through the second TCI state. Alternatively, the base station indicates to the terminal a third TCI state that is associated with both the first reference signal and the second reference signal, such that, with the third TCI state, the base station informs the terminal to use the same beam or spatial filter on the downlink as the first reference signal and to use the same beam or spatial filter as the second reference signal.
In an embodiment, before receiving the first information reported by the terminal, the method further includes:
sending a first configuration to the terminal; wherein, the first and the second end of the pipe are connected with each other,
the first configuration is configured to configure the terminal to report a frequency offset characterizing the first reference signal relative to the second reference signal, and/or to characterize the frequency offset of the second reference signal relative to the first reference signal.
Here, the base station may instruct the terminal to report the frequency offset of the first reference signal relative to the second reference signal and/or the frequency offset of the second reference signal relative to the first reference signal by sending the first configuration.
Or, in the case that the base station indicates the first TCI state and the second TCI state to the terminal, the base station may also indicate, by sending the first configuration, that the terminal reports the measured frequency offset of the first TCI state relative to the second TCI state, and/or the frequency offset of the second TCI state relative to the first TCI state.
In an embodiment, before receiving the first information reported by the terminal, the method further includes:
sending a second configuration to the terminal; wherein the content of the first and second substances,
the second configuration is configured to configure the terminal to report the first information in one of the following manners:
reporting periodically;
Semi-Persistent Scheduling (SPS) reporting;
and reporting a trigger condition.
In a periodic reporting mode, the terminal reports a measurement result about frequency offset between a first reference signal and a second reference signal to the base station every a set period; in an SPS reporting mode, the terminal uses SPS resources to report a measurement result of frequency offset between a first reference signal and a second reference signal at set intervals; in the trigger condition reporting mode, by setting a corresponding trigger condition, for example, setting a corresponding reporting threshold, when the frequency offset between the first reference signal and the second reference signal measured by the terminal is greater than the corresponding reporting threshold, the terminal reports a measurement result about the frequency offset between the first reference signal and the second reference signal.
In practical applications, in order to more efficiently transmit the frequency offset measured by the terminal, in an embodiment, the first information is represented by a bit value with a set number of bits.
For example, in the 3.5GHz band, the frequency offset measured by the terminal is quantized to a 7-bit value with a quantization accuracy of 30Hz, that is, 0Hz frequency offset is represented by "1000000", 30Hz frequency offset is represented by "0111111", 60Hz frequency offset is represented by "0111110" \ 8230 \ 8230; "1920 Hz frequency offset is represented by" 0000000", 30Hz frequency offset is represented by" 1000001", 60Hz frequency offset is represented by" 1000010 "\8230;" 1920Hz frequency offset is represented by "1111111". Then, if the frequency offset measured by the terminal is 1200Hz, the first information reported by the terminal to the base station may be "1100100".
An embodiment of the present application further provides a data transmission method, which is applied to a terminal, and as shown in fig. 2, the method includes:
step 201: and receiving a first reference signal and a second reference signal transmitted by a base station.
Here, the base station transmits two reference signals to the terminal, and the two reference signals are transmitted through transmission points disposed at different geographical locations. In practical applications, the reference signal transmitted by the base station may be a TRS, and the TRS is transmitted based on two TRPs, respectively. Therefore, in an embodiment, the first reference signal is a first TRS, and the second reference signal is a second TRS, where the first TRS is transmitted by the first TRP and the second TRS is transmitted by the second TRP.
Step 202: first information reported to a base station; the first information represents frequency offset between a first reference signal and a second reference signal measured by the terminal.
Because the distance or the position relation between the terminal and the transmitting positions of the two reference signals is different, the terminal performs frequency measurement on the received reference signals to obtain a measurement result of the frequency deviation between the first reference signal and the second reference signal. For example, when the terminal is in the middle of two TRPs, doppler frequency offsets of TRSs from the two TRPs are +1.6GHz and-1.6 GHz, respectively, in the 3.5GHz band. Here, after measuring the frequency offset between the first reference signal and the second reference signal, the terminal reports the measured frequency offset to the base station.
And obtaining the frequency offset between the first reference signal and the second reference signal based on the measurement of the terminal, and when the base station sends the PDCCH and/or the PDSCH at the corresponding transmission point, performing frequency pre-compensation so that the frequency deviation is the same or in a negligible range when the PDCCH and/or the PDSCH sent by the two transmission points reach the terminal. Specifically, the base station may choose to perform frequency pre-compensation at one of the two transmission points, or both transmission points may transmit PDCCH and/or PDSCH. Therefore, the Doppler frequency offset of the PDCCH and/or the PDSCH sent by the base station subsequently when the PDCCH and/or the PDSCH reach the terminal is the same or almost the same, so that the demodulation performance of the terminal can be effectively improved.
In an embodiment, before the first information reported to the base station, the method further includes:
receiving a first TCI state and a second TCI state indicated by the base station; wherein the first TCI state is associated with the first reference signal; the second TCI state is associated with the second reference signal; alternatively, the first and second electrodes may be,
receiving a third TCI status indicated by the base station; wherein the third TCI state is associated with both the first reference signal and the second reference signal.
Here, the base station indicates to the terminal a first TCI state (TCI state) associated with information of the first reference signal and a second TCI state associated with information of the second reference signal, such that the base station informs the terminal to use the same beam or spatial filter on downlink transmission as the first reference signal associated with the first TCI state through the first TCI state, and informs the terminal to use the same beam or spatial filter on downlink transmission as the second reference signal associated with the second TCI state through the second TCI state. Alternatively, the base station indicates to the terminal a third TCI status associated with both the first reference signal and the second reference signal, such that, with the third TCI status, the base station informs the terminal to use the same beam or spatial filter on the downlink as the first reference signal and to use the same beam or spatial filter as the second reference signal.
In an embodiment, before the first information reported to the base station, the method further includes:
receiving a first configuration sent by the base station; wherein the content of the first and second substances,
the first configuration is configured to configure the terminal to report a frequency offset representing the frequency offset of the first reference signal relative to the second reference signal, and/or to represent the frequency offset of a signal sent by the second reference signal relative to the first reference signal.
Here, the base station may instruct the terminal to report the frequency offset of the first reference signal relative to the second reference signal and/or the frequency offset of the second reference signal relative to the first reference signal by sending the first configuration.
Or, in the case that the base station indicates the first TCI state and the second TCI state to the terminal, the base station may also indicate, by sending the first configuration, that the terminal reports the frequency offset, measured in the first TCI state, of the first TCI state relative to the second TCI state, and/or the frequency offset, measured in the second TCI state relative to the first TCI state, of the second TCI state.
In an embodiment, before the first information reported to the base station, the method further includes:
receiving a second configuration sent by the base station; wherein the content of the first and second substances,
the second configuration is configured to configure the terminal to report the first information in one of the following manners:
reporting periodically;
reporting semi-static scheduling;
and reporting the trigger condition.
In a periodic reporting mode, the terminal reports a measurement result about frequency offset between a first reference signal and a second reference signal to the base station every a set period; in an SPS reporting mode, the terminal uses SPS resources to report a measurement result of frequency offset between a first reference signal and a second reference signal at set intervals; in the trigger condition reporting mode, by setting a corresponding trigger condition, for example, setting a corresponding reporting threshold, when the frequency offset between the first reference signal and the second reference signal measured by the terminal is greater than the corresponding reporting threshold, the terminal reports a measurement result about the frequency offset between the first reference signal and the second reference signal.
In practical applications, in order to more efficiently transmit the frequency offset measured by the terminal, in an embodiment, the first information is represented by a bit value with a set number of bits.
For example, in the 3.5GHz band, the frequency offset measured by the terminal is quantized to a 7-bit value with a quantization accuracy of 30Hz, that is, 0Hz frequency offset is represented by "1000000", 30Hz frequency offset is represented by "0111111", 60Hz frequency offset is represented by "0111110" \ 8230 \ 8230; "1920 Hz frequency offset is represented by" 0000000", 30Hz frequency offset is represented by" 1000001", 60Hz frequency offset is represented by" 1000010 "\8230;" 1920Hz frequency offset is represented by "1111111". Then, if the frequency offset measured by the terminal is 1200Hz, the first information reported by the terminal to the base station may be "1100100".
The scheme of the application is further illustrated by the application examples below:
with reference to the high-speed rail scenario in fig. 3, in this application embodiment, TRP 0 and TRP 1 are 2 TRPs connected to the same cell, and assuming that a high-speed rail user, that is, a terminal is located at the position shown in fig. 3, TRP 0 and TRP 1 respectively transmit TRS 0 and TRS 1, that is, TRS 0 and TRS 1 use a TRP specific transmission mode, instead of a Single Frequency Network (SFN) transmission mode. Meanwhile, the PDCCH and the PDSCH can be transmitted simultaneously by TRP 0 and TRP 1, that is, SFN transmission is adopted. Meanwhile, the base station configures the frequency deviation Delta _ f = f _ TRS 1-f _ TRS 0 between the TRS 0 and the TRS 1 reported by the terminal, namely the frequency deviation Delta _ f is equal to the deviation of the frequency f _ TRS 0 of the TRS 1 measured by the terminal relative to the frequency f _ TRS 0 of the TRS 0.
In the frequency band of 3.5GHz, the frequency deviation measured by the terminal is quantized to a bit value of 7 bits with a quantization accuracy of 30Hz, and then, assuming that Delta _ f = f _ TRS 0-f _ TRS 1=1200Hz measured at the position shown in fig. 3 by the terminal, the terminal reports the corresponding bit value "1100100" to the base station. The base station sends PDCCH and/or PDSCH according to the bit value reported by the terminal, and TRP 0 is based on carrier frequency f 0 Transmission at =3.5GHz and TRP 1 is based on carrier frequency f 1 ＝f 0 -Delta _ f. In this way, the frequency deviation of the PDCCH and/or PDSCH received by the terminal from TRP 0 and TRP 1 is the same, and the demodulation performance of the terminal can be effectively improved.
According to the scheme provided by the embodiment of the application, the base station can pre-compensate the downlink Doppler frequency of the terminal, so that in a scene that the Doppler frequency offset difference between a plurality of reference signals received by the terminal is large, for example, when the terminal is in a high-speed traveling state, the Doppler frequency offset when the PDCCH and/or PDSCH sent subsequently reaches the terminal can be the same through the frequency pre-compensation, and the demodulation performance of the terminal can be effectively improved.
In order to implement the method at the base station side in the embodiment of the present application, an embodiment of the present application further provides a data transmission device, which is disposed on the base station, and as shown in fig. 4, the data transmission device includes:
a first sending unit 401, configured to send a first reference signal and a second reference signal to a terminal;
a first receiving unit 402, configured to receive first information reported by a terminal; the first information represents frequency offset between a first reference signal and a second reference signal measured by the terminal;
a second transmitting unit 403, configured to transmit the PDCCH and/or the PDSCH to the terminal based on the first information.
In an embodiment, the first reference signal is a first TRS, and the second reference signal is a second TRS.
In one embodiment, the apparatus further comprises:
the first indication unit is used for indicating a first TCI state and a second TCI state to the terminal before the first information reported by the receiving terminal; wherein the first TCI state is associated with the first reference signal; the second TCI state is associated with the second reference signal; alternatively, the first and second electrodes may be,
indicating a third TCI status to the terminal; wherein the third TCI state is associated with both the first reference signal and the second reference signal.
In one embodiment, the apparatus further comprises:
a third sending unit, configured to send a first configuration to the terminal before the first information reported by the receiving terminal; wherein, the first and the second end of the pipe are connected with each other,
the first configuration is configured to configure the terminal to report a frequency offset of the first reference signal relative to the second reference signal, and/or a frequency offset of the second reference signal relative to the first reference signal.
In one embodiment, the apparatus further comprises:
a fourth sending unit, configured to send a second configuration to the terminal before the first information reported by the receiving terminal; wherein the content of the first and second substances,
the second configuration is configured to configure the terminal to report the first information in one of the following manners:
reporting periodically;
reporting the semi-static scheduling;
and reporting the trigger condition.
In one embodiment, the first information is represented by a bit value of a set number of bits.
In practical applications, the first sending unit 401, the first receiving unit 402, the second sending unit 403, the first indicating unit, the third sending unit, and the fourth sending unit may be implemented by a communication interface in a data transmission device.
In order to implement the method on the terminal side in the embodiment of the present application, an embodiment of the present application further provides a data transmission device, which is disposed on a terminal, and as shown in fig. 5, the data transmission device includes:
a second receiving unit 501, configured to receive a first reference signal and a second reference signal sent by a base station;
a first reporting unit 502, configured to report first information to a base station; the first information represents frequency offset between a first reference signal and a second reference signal measured by the terminal.
In an embodiment, the first reference signal is a first TRS, and the second reference signal is a second TRS.
In one embodiment, the apparatus further comprises:
a third receiving unit, configured to receive the first TCI status and the second TCI status indicated by the base station before the first information reported to the base station; wherein the first TCI state is associated with the first reference signal; the second TCI state is associated with the second reference signal; alternatively, the first and second liquid crystal display panels may be,
receiving a third TCI status indicated by the base station; wherein the third TCI state is associated with the first reference signal and the second reference signal simultaneously.
In one embodiment, the apparatus further comprises:
a fourth receiving unit, configured to receive the first configuration sent by the base station before the first information reported to the base station; wherein, the first and the second end of the pipe are connected with each other,
the first configuration is configured to configure the terminal to report a frequency offset representing the frequency offset of the first reference signal relative to the second reference signal, and/or to represent the frequency offset of a signal sent by the second reference signal relative to the first reference signal.
In one embodiment, the apparatus further comprises:
a fifth receiving unit, configured to receive, before the first information reported to the base station, a second configuration sent by the base station; wherein the content of the first and second substances,
the second configuration is configured to configure the terminal to report the first information in one of the following manners:
reporting periodically;
reporting the semi-static scheduling;
and reporting a trigger condition.
In one embodiment, the first information is represented by a bit value of a set number of bits.
In practical application, the second receiving unit 501, the first reporting unit 502, the third receiving unit, the fourth receiving unit, and the fifth receiving unit may be implemented by a communication interface in a data transmission device.
It should be noted that: in the data transmission device provided in the above embodiment, only the division of the program modules is exemplified when data transmission is performed, and in practical applications, the processing distribution may be completed by different program modules according to needs, that is, the internal structure of the device may be divided into different program modules to complete all or part of the processing described above. In addition, the data transmission device and the data transmission method provided by the above embodiments belong to the same concept, and specific implementation processes thereof are described in the method embodiments and are not described herein again.
Based on the hardware implementation of the program module, and in order to implement the method at the base station side in the embodiment of the present application, an embodiment of the present application further provides a base station, as shown in fig. 6, a base station 600 includes:
a first communication interface 601, which is capable of performing information interaction with other network nodes;
the first processor 602 is connected to the first communication interface 601 to implement information interaction with other network nodes, and is configured to execute a method provided by one or more technical solutions of the base station side when running a computer program. And the computer program is stored on the first memory 603.
Specifically, the first communication interface 601 is configured to send a first reference signal and a second reference signal to a terminal; receiving first information reported by a terminal; the first information represents frequency offset between a first reference signal and a second reference signal measured by the terminal; and transmitting the PDCCH and/or the PDSCH to the terminal based on the first information.
In an embodiment, the first reference signal is a first TRS, and the second reference signal is a second TRS.
In an embodiment, the first communication interface 601 is further configured to indicate a first TCI status and a second TCI status to the terminal before receiving the first information reported by the terminal; wherein the first TCI state is associated with the first reference signal; the second TCI state is associated with the second reference signal; or, indicating a third TCI status to the terminal; wherein the third TCI state is associated with the first reference signal and the second reference signal simultaneously.
In an embodiment, the first communication interface 601 is further configured to send a first configuration to the terminal before the terminal receives the first information reported by the terminal; wherein, the first and the second end of the pipe are connected with each other,
the first configuration is configured to configure the terminal to report a frequency offset of the first reference signal relative to the second reference signal, and/or a frequency offset of the second reference signal relative to the first reference signal.
In an embodiment, the first communication interface 601 is further configured to send a second configuration to the terminal before the first information reported by the terminal is received; wherein the content of the first and second substances,
the second configuration is configured to configure the terminal to report the first information in one of the following manners:
reporting periodically;
reporting the semi-static scheduling;
and reporting the trigger condition.
In one embodiment, the first information is represented by a bit value of a set number of bits.
It should be noted that: the specific processing procedures of the first processor 602 and the first communication interface 601 can be understood with reference to the above-described methods.
Of course, in practice, the various components in the base station 600 are coupled together by a bus system 604. It is understood that the bus system 604 is used to enable communications among the components. The bus system 604 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 604 in fig. 6.
The first memory 603 in the embodiment of the present application is used to store various types of data to support the operation of the base station 600. Examples of such data include: any computer program for operation on the base station 600.
The method disclosed in the embodiment of the present application may be applied to the first processor 602, or implemented by the first processor 602. The first processor 602 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by an integrated logic circuit of hardware or an instruction in the form of software in the first processor 602. The first Processor 602 may be a general purpose Processor, a Digital Signal Processor (DSP), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, etc. The first processor 602 may implement or perform the methods, steps, and logic blocks disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in the first memory 603, and the first processor 602 reads the information in the first memory 603 and, in conjunction with its hardware, performs the steps of the foregoing method.
In an exemplary embodiment, the base station 600 may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, programmable Logic Devices (PLDs), complex Programmable Logic Devices (CPLDs), field-Programmable Gate arrays (FPGAs), general purpose processors, controllers, micro Controllers (MCUs), microprocessors (microprocessors), or other electronic components for performing the aforementioned methods.
Based on the hardware implementation of the program module, and in order to implement the method on the terminal side in the embodiment of the present application, an embodiment of the present application further provides a terminal, as shown in fig. 7, where the terminal 700 includes:
a second communication interface 701 capable of performing information interaction with other network nodes;
the second processor 702 is connected to the second communication interface 701 to implement information interaction with other network nodes, and is configured to execute the method provided by one or more technical solutions of the terminal side when running a computer program. And the computer program is stored on the second memory 703.
Specifically, the second communication interface 701 is configured to receive a first reference signal and a second reference signal sent by a base station; the first information is reported to the base station; the first information represents frequency offset between a first reference signal and a second reference signal measured by the terminal.
In an embodiment, the first reference signal is a first TRS, and the second reference signal is a second TRS.
In an embodiment, the second communication interface 701 is further configured to receive a first TCI status and a second TCI status indicated by the base station before the first information reported to the base station; wherein the first TCI state is associated with the first reference signal; the second TCI state is associated with the second reference signal; or receiving a second TCI state indicated by the base station; wherein the second TCI state is associated with both the first reference signal and the second reference signal.
In an embodiment, the second communication interface 701 is further configured to receive a first configuration sent by the base station; wherein the content of the first and second substances,
the first configuration is configured to configure the terminal to report a frequency offset representing the frequency offset of the first reference signal relative to the second reference signal, and/or to represent the frequency offset of a signal sent by the second reference signal relative to the first reference signal.
In an embodiment, the second communication interface 701 is further configured to receive a second configuration sent by the base station; wherein the content of the first and second substances,
the second configuration is configured to configure the terminal to report the first information in one of the following manners:
reporting periodically;
reporting semi-static scheduling;
and reporting a trigger condition.
In one embodiment, the first information is represented by a bit value of a set number of bits.
Of course, in practice, the various components in the terminal 700 are coupled together by a bus system 704. It is understood that the bus system 704 is used to enable communications among the components. The bus system 704 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are designated as bus system 704 in FIG. 7.
The second memory 703 in the embodiment of the present application is used to store various types of data to support the operation of the terminal 700. Examples of such data include: any computer program for operating on terminal 700.
The method disclosed in the embodiments of the present application may be applied to the second processor 702, or implemented by the second processor 702. The second processor 702 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by an integrated logic circuit of hardware or an instruction in the form of software in the second processor 702. The second processor 702 described above may be a general purpose processor, a DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The second processor 702 may implement or perform the methods, steps and logic blocks disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium located in the second memory 703, and the second processor 702 reads the information in the second memory 703, and completes the foregoing steps of the method in combination with its hardware.
In an exemplary embodiment, terminal 700 can be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, microprocessors, or other electronic components for performing the aforementioned methods.
It is understood that the memories (the first memory 603 and the second memory 703) of the embodiments of the present application may be volatile memories or nonvolatile memories, and may include both volatile and nonvolatile memories. Among them, the nonvolatile Memory may be a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a magnetic random access Memory (FRAM), a magnetic random access Memory (Flash Memory), a magnetic surface Memory, an optical Disc, or a Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), synchronous Static Random Access Memory (SSRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), enhanced Synchronous Dynamic Random Access Memory (ESDRAM), enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM), synchronous Dynamic Random Access Memory (SLDRAM), direct Memory (DRmb Access), and Random Access Memory (DRAM). The memories described in the embodiments of the present application are intended to comprise, without being limited to, these and any other suitable types of memory.
In an exemplary embodiment, the present application further provides a storage medium, specifically a computer storage medium, for example, a first memory 603 storing a computer program, where the computer program is executable by the first processor 602 of the base station 600 to complete the steps of the foregoing base station side method. Further for example, the second memory 703 may comprise a computer program, which is executable by the second processor 702 of the terminal 700 to perform the steps of the terminal side method as described above. The computer readable storage medium may be Memory such as FRAM, ROM, PROM, EPROM, EEPROM, flash Memory, magnetic surface Memory, optical disk, or CD-ROM.
It should be noted that: "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the term "at least one" herein means any combination of any one or more of a plurality, for example, including at least one of a, B, and C, and may mean including any one or more elements selected from the group consisting of a, B, and C.
The technical means described in the embodiments of the present application may be arbitrarily combined without conflict.
The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. .

Claims (19)

1. A data transmission method, applied to a base station, includes:
transmitting a first reference signal and a second reference signal to a terminal;
receiving first information reported by a terminal; the first information represents frequency offset between a first reference signal and a second reference signal measured by the terminal;
and sending a Physical Downlink Control Channel (PDCCH) and/or a Physical Downlink Shared Channel (PDSCH) to the terminal based on the first information.
2. The method of claim 1, wherein the first reference signal is a first Tracking Reference Signal (TRS) and the second reference signal is a second TRS.
3. The method according to claim 1 or 2, wherein before receiving the first information reported by the terminal, the method further comprises:
indicating a first Transmission Configuration Indication (TCI) status and a second TCI status to the terminal; wherein the first TCI state is associated with the first reference signal; the second TCI state is associated with the second reference signal; alternatively, the first and second electrodes may be,
indicating a third TCI status to the terminal; wherein the third TCI state is associated with both the first reference signal and the second reference signal.
4. The method of claim 1, wherein before the receiving the first information reported by the terminal, the method further comprises:
sending a first configuration to the terminal; wherein the content of the first and second substances,
the first configuration is configured to configure the terminal to report a frequency offset of the first reference signal relative to the second reference signal, and/or a frequency offset of the second reference signal relative to the first reference signal.
5. The method according to any of claims 1 to 3, wherein before receiving the first information reported by the terminal, the method further comprises:
sending a second configuration to the terminal; wherein the content of the first and second substances,
the second configuration is configured to configure the terminal to report the first information in one of the following manners:
reporting periodically;
reporting the semi-static scheduling;
and reporting a trigger condition.
6. The method according to claim 1, wherein the first information is represented by a bit value of a set number of bits.
7. A data transmission method is applied to a terminal and comprises the following steps:
receiving a first reference signal and a second reference signal sent by a base station;
first information reported to a base station; the first information represents frequency offset between a first reference signal and a second reference signal measured by the terminal.
8. The method of claim 7, wherein the first reference signal is a first TRS and the second reference signal is a second TRS.
9. The method according to claim 7 or 8, wherein prior to the first information reported to the base station, the method further comprises:
receiving a first TCI state and a second TCI state indicated by the base station; wherein the first TCI state is associated with the first reference signal; the second TCI state is associated with the second reference signal; alternatively, the first and second electrodes may be,
receiving a third TCI status indicated by the base station; wherein the third TCI state is associated with the first reference signal and the second reference signal simultaneously.
10. The method of claim 7, wherein prior to the reporting the first information to the base station, the method further comprises:
receiving a first configuration sent by the base station; wherein the content of the first and second substances,
the first configuration is configured to configure the terminal to report a frequency offset representing the first reference signal relative to the second reference signal, and/or to represent a frequency offset representing a signal sent by the second reference signal relative to the first reference signal.
11. The method of claim 7, wherein prior to the first information reported to the base station, the method further comprises:
receiving a second configuration sent by the base station; wherein, the first and the second end of the pipe are connected with each other,
the second configuration is configured to configure the terminal to report the first information in one of the following manners:
reporting periodically;
reporting semi-static scheduling;
and reporting a trigger condition.
12. The method of claim 7, wherein the first information is represented by a set number of bits of bit value.
13. A data transmission apparatus, comprising:
a first transmitting unit, configured to transmit a first reference signal and a second reference signal to a terminal;
the first receiving unit is used for receiving first information reported by the terminal; the first information represents frequency offset between a first reference signal and a second reference signal measured by the terminal;
and a second transmitting unit, configured to transmit the PDCCH and/or the PDSCH to the terminal based on the first information.
14. A data transmission apparatus, comprising:
a second receiving unit, configured to receive a first reference signal and a second reference signal sent by a base station;
a first reporting unit, configured to report first information to a base station; the first information represents frequency offset between a first reference signal and a second reference signal measured by the terminal.
15. A base station, comprising: a first processor and a first communication interface; wherein the content of the first and second substances,
the first communication interface is used for sending a first reference signal and a second reference signal to a terminal; receiving first information reported by a terminal; the first information represents frequency offset between a first reference signal and a second reference signal measured by the terminal; and transmitting the PDCCH and/or the PDSCH to the terminal based on the first information.
16. A terminal, comprising: a second processor and a second communication interface; wherein, the first and the second end of the pipe are connected with each other,
the second communication interface is used for receiving a first reference signal and a second reference signal sent by a base station; the first information is reported to the base station; the first information represents frequency offset between a first reference signal and a second reference signal measured by the terminal.
17. A base station, comprising: a first processor and a first memory for storing a computer program capable of running on the processor,
wherein the first processor is adapted to perform the steps of the method of any one of claims 1 to 6 when running the computer program.
18. A terminal, comprising: a second processor and a second memory for storing a computer program capable of running on the processor,
wherein the second processor is adapted to perform the steps of the method of any one of claims 7 to 12 when running the computer program.
19. A storage medium having stored thereon a computer program for performing the steps of the method of any one of claims 1 to 6, or for performing the steps of the method of any one of claims 7 to 12, when the computer program is executed by a processor.
CN202111175908.2A 2021-10-09 2021-10-09 Data transmission method, device, base station, terminal and storage medium Pending CN115967598A (en)

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US10225054B2 (en) * 2014-11-07 2019-03-05 Electronics And Telecommunications Research Institute Method and apparatus for transmitting reference signal, method and apparatus for measuring and reporting channel state information, and method for configuring the same
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