CN109392075B - Configuration method of time frequency tracking reference signal, base station and computer readable medium - Google Patents
Configuration method of time frequency tracking reference signal, base station and computer readable medium Download PDFInfo
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Abstract
A configuration method of a time frequency tracking reference signal, a base station and a computer readable medium are provided. The configuration method comprises the following steps: configuring the time-frequency tracking reference signal and a CSI-RS quasi-common site or corresponding to the same antenna port; configuring a first portion of the time-frequency tracking reference signal to multiplex the CSI-RS; and configuring the second part of the time frequency tracking reference signal not to conflict with other reference signals of non-co-site-like sites. By applying the scheme, the time frequency tracking reference signal and the CSI-RS are configured to be quasi-co-sited or correspond to the same antenna port, and the first part of the time frequency tracking reference signal is further configured to multiplex the CSI-RS, so that the cost of the reference signal can be reduced, and the utilization rate of system resources is improved; by configuring that the second part of the time frequency tracking reference signal does not conflict with reference signals of other non-co-site sites, the UE can carry out accurate time frequency estimation, thereby obtaining better receiver performance.
Description
Technical Field
The embodiment of the invention relates to the field of communication, in particular to a configuration method of a time frequency tracking reference signal, a base station and a computer readable medium.
Background
In the LTE system, a User Equipment (UE) may perform time-frequency deviation correction through a Cell-specific Reference Signal (CRS), and maintain synchronization with a base station in time and frequency.
In a New Radio (NR) system of 5G, CRS signals are not present, but in order to meet the requirements of different application scenarios and deployment scenarios, a Tracking Reference Signal (TRS) is introduced, and the UE performs time-frequency deviation correction through the TRS, and keeps synchronization with the base station in time-frequency, thereby obtaining better receiver performance.
However, in the existing product scheme, only the design criteria of the TRS are given, and no specific TRS configuration scheme is given.
Disclosure of Invention
The technical problem solved by the embodiment of the invention is how to configure the time frequency tracking reference signal.
In order to solve the foregoing technical problem, an embodiment of the present invention provides a method for configuring a time-frequency tracking reference signal, where the method includes: a method for configuring a time-frequency tracking reference signal, the method comprising: configuring the time-frequency tracking reference signal and a CSI-RS quasi-common site or corresponding to the same antenna port; configuring a first portion of the time-frequency tracking reference signal to multiplex the CSI-RS; and configuring the second part of the time frequency tracking reference signal not to conflict with other reference signals of non-co-site-like sites.
Optionally, the configuring the first portion of the time-frequency tracking reference signal to multiplex the CSI-RS includes: when the CSI-RS is configured to be a single port, configuring a first part of the time-frequency tracking reference signal to multiplex the CSI-RS; configuring a first portion of the time-frequency tracking reference signal to multiplex the CSI-RS of only one port when the CSI-RS is configured as a multi-port.
Optionally, the method for configuring a time-frequency tracking reference signal further includes: and dynamically configuring or semi-statically configuring the period of the time frequency tracking reference signal.
Optionally, configuring a period of the time-frequency tracking reference signal to be less than or equal to a period of the CSI-RS.
Optionally, when the period of the time-frequency tracking reference signal is smaller than the period of the CSI-RS, the CSI-RS period is configured to be an integer multiple of the period of the time-frequency tracking reference signal.
Optionally, the time frequency tracking reference signals are configured to have the same corresponding time frequency resource location in each period.
Optionally, configuring the second part of the time-frequency tracking reference signal not to collide with other reference signals of non-co-site, including: and configuring the time frequency resource corresponding to the second part of the time frequency tracking reference signal to be positioned in front of or behind the time frequency resource corresponding to the CSI-RS on the time domain.
Optionally, when configuring the first part of the time-frequency tracking reference signal to multiplex the CSI-RS, specifically configuring the parameter of the time-frequency tracking reference signal includes: configuring the length of the time frequency tracking reference signal to be 1 time slot or 2 time slots; configuring the period of the time frequency tracking reference signal to be 5ms or 1 ms; in each time slot, configuring the number of OFDM symbols contained in the time frequency tracking reference signal to be 2 or 4; configuring the frequency band broadband of the time frequency tracking reference signal to be more than 24 RBs; configuring the frequency domain interval of the time-frequency tracking reference signal to be 6 subcarriers or consistent with the frequency domain interval of a single-port CSI-RS; and configuring the time domain interval of the time frequency tracking reference signal to be more than 2 OFDM symbols which are in non-uniform distribution.
An embodiment of the present invention provides a base station, where the base station includes: the first configuration unit is suitable for configuring the time-frequency tracking reference signal and the CSI-RS quasi-common-site or corresponding to the same antenna port; a second configuration unit, adapted to configure a first portion of the time-frequency tracking reference signal to multiplex the CSI-RS; and the third configuration unit is suitable for configuring the second part of the time frequency tracking reference signal not to conflict with the reference signals of other non-quasi co-site addresses.
Optionally, the second configuration unit includes: a first configuration subunit and a second configuration subunit, wherein: the first configuration subunit is adapted to configure a first portion of the time-frequency tracking reference signal to multiplex the CSI-RS when the CSI-RS is configured as a single port; the second configuration subunit is adapted to configure the first portion of the time-frequency tracking reference signal to multiplex the CSI-RS of only one port when the CSI-RS is configured as a multi-port.
Optionally, the base station further includes: and the fourth configuration unit is suitable for dynamically or semi-statically configuring the period of the time frequency tracking reference signal.
Optionally, the fourth configuration unit is adapted to configure the periodicity of the time-frequency tracking reference signal to be less than or equal to the periodicity of the CSI-RS.
Optionally, the fourth configuration unit includes: and the third configuration subunit is suitable for configuring the CSI-RS period to be integral multiple of the period of the time-frequency tracking reference signal when the period of the time-frequency tracking reference signal is smaller than the period of the CSI-RS.
Optionally, the base station further includes: and the fifth configuration unit is suitable for configuring the time frequency tracking reference signals to have the same corresponding time frequency resource position in each period.
Optionally, the third configuring unit is adapted to configure a time-frequency resource corresponding to the second part of the time-frequency tracking reference signal to be located before or after the time-frequency resource corresponding to the CSI-RS in a time domain.
Optionally, the second configuration unit further includes: a fourth configuration subunit adapted to configure: the length of the time frequency tracking reference signal is 1 time slot or 2 time slots; the period of the time frequency tracking reference signal is 5ms or 1 ms; in each time slot, the number of OFDM symbols contained in the time frequency tracking reference signal is 2 or 4; the frequency band broadband of the time frequency tracking reference signal is more than 24 RBs; the frequency domain interval of the time-frequency tracking reference signal is 6 subcarriers or is consistent with the frequency domain interval of the single-port CSI-RS; the time domain interval of the time frequency tracking reference signal is more than 2 OFDM symbols and is non-uniformly distributed.
The embodiment of the invention provides a computer readable medium, which stores computer instructions, and when the computer instructions are executed, the computer instructions execute the steps corresponding to the time frequency tracking reference signal configuration method.
The embodiment of the invention provides a base station, which comprises a memory and a processor, wherein a computer instruction capable of running on the processor is stored in the memory, and the processor executes the steps corresponding to the time frequency tracking reference signal configuration method when running the computer instruction.
Compared with the prior art, the technical method provided by the embodiment of the invention has the following beneficial effects:
on one hand, the time frequency tracking reference signal and the CSI-RS are configured to be co-sited or correspond to the same antenna port, and then the first part of the time frequency tracking reference signal is configured to multiplex the CSI-RS, so that the cost of the reference signal can be reduced, and the utilization rate of system resources is improved; on the other hand, the second part of the time frequency tracking reference signal is configured not to conflict with other reference signals of non-co-site planning, so that the UE can carry out accurate time frequency estimation, and better receiver performance is obtained.
Drawings
FIG. 1 is a schematic diagram illustrating a time-frequency correction method in the prior art;
FIG. 2 is a schematic diagram of a prior art time-frequency tracking reference signal structure;
FIG. 3 is a flowchart of a method for time-frequency tracking reference signals according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a time-frequency resource corresponding to a time-frequency tracking reference signal according to an embodiment of the present invention;
fig. 5 is a schematic diagram of time-frequency resources corresponding to another time-frequency tracking reference signal according to an embodiment of the present invention;
fig. 6 is a schematic diagram of time-frequency resources corresponding to another time-frequency tracking reference signal according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention.
Detailed Description
Currently, in a specific product implementation, a method for a UE to perform time-frequency correction by keeping the UE synchronized with a base station through a TRS is shown in fig. 1.
Referring to fig. 1, after receiving analog signals of I path and Q path, UE first performs compensation of Carrier Time Offset (CTO) and Carrier Frequency Offset (CFO), then performs digital-to-analog conversion, and then performs Fast Fourier Transform (FFT) and obtains corresponding Frequency domain TRS signals. And then the UE carries out time offset estimation and frequency offset estimation based on the frequency domain TRS signal, and inputs the estimated values to the CTO and the CFO for time-frequency correction. The above correction process is iteratively performed in a loop until the residual CTO and CFO are within an acceptable range, e.g., 0.1ppm (parts Per million).
In the existing 5G product scheme, only the design criteria of the TRS are given, and no specific TRS configuration scheme is given. The TRS design structure given by the 5G system is shown in fig. 2, and includes the following parameters:
TRS period: the period of the TRS is set to Y in ms;
TRS length: the length of the TRS in each TRS period is set as X, the unit is a time Slot (Slot), and each time Slot comprises 14 OFDM symbols;
number of TRS symbols: indicating the number of OFDM symbols contained in TRS in each Slot, and setting the number as N;
TRS bandwidth: the bandwidth of the TRS band is represented, and the unit is the number of Resource Blocks (RB);
TRS frequency domain spacing Sf: indicating the subcarrier spacing of the TRS signal in the frequency domain within each RB;
TRS time domain space St: indicating the spacing of the TRS signal in the time domain within each RB.
In order to reduce the system overhead of the TRS and improve the utilization rate of system resources, an existing Channel State Indication Reference Signal (CSI-RS) may be multiplexed during the TRS design, and the CSI-RS is mainly used for CSI Acquisition (CSI Acquisition) and Beam Management (Beam Management, BM). However, the tracking range and the tracking precision of the current CSI-RS signal cannot meet the performance requirement of the TRS signal, thereby affecting the time-frequency deviation correction performance of the UE. Therefore, the embodiment of the invention configures the time frequency tracking reference signal and the CSI-RS quasi-common site or corresponds to the same antenna port, and further configures the first part of the time frequency tracking reference signal to multiplex the CSI-RS, thereby reducing the cost of the reference signal and improving the utilization rate of system resources; by configuring that the second part of the time frequency tracking reference signal does not conflict with reference signals of other non-co-site sites, the UE can carry out accurate time frequency estimation, thereby obtaining better receiver performance.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 3, an embodiment of the present invention provides a method for configuring a time-frequency tracking reference signal, where the method includes:
s301, configuring the time-frequency tracking reference signal and a CSI-RS quasi-common site or corresponding to the same antenna port.
S302, configuring the first part of the time frequency tracking reference signal to multiplex the CSI-RS.
In a specific implementation, in order to reduce the overhead of the reference signal and improve the utilization rate of system resources, the first part of the time-frequency tracking reference signal may be configured to multiplex the CSI-RS.
In a specific implementation, the CSI-RS may be configured to transmit on multiple ports, and when the CSI-RS is configured as a single port, the first part of the time-frequency tracking reference signal may be configured to multiplex the CSI-RS. Under a single port, the CSI-RS occupies 2 Resource Elements (REs) on one OFDM symbol in one RB at a frequency domain density, and a frequency domain interval is generally within 6 subcarriers, so that the first part of the TRS can be configured to multiplex the 2 REs for time-frequency tracking. When the CSI-RS is configured to be multi-port, regardless of whether the CSI-RS uses orthogonal mapping or not, the frequency-domain density of the CSI-RS may be equivalent to that one port occupies 1 RE within one RB, and the first part of the time-frequency tracking reference signal may be configured to multiplex the CSI-RS of only one port.
In a specific implementation, in order to improve the resource utilization rate of the time frequency tracking reference signal, the period of the time frequency tracking reference signal may be dynamically or semi-statically configured according to a network load. For example, when the network load is heavy, a longer period of the time-frequency tracking reference signal may be configured, more air interface resources are reserved to transmit data to reduce the network load, and when the network load is light, a shorter period of the time-frequency tracking reference signal may be configured, so that the UE performs accurate time-frequency correction to obtain better receiver performance.
In a specific implementation, in order to realize that the first part of the time-frequency tracking reference signal can multiplex a CSI-RS, the period of the time-frequency tracking reference signal is configured to be less than or equal to the period of the CSI-RS.
In a specific implementation, when the period of configuring the time-frequency tracking reference signal is smaller than the period of the CSI-RS, in order to enable the first part of the time-frequency tracking reference signal to multiplex the CSI-RS, the period of the time-frequency tracking reference signal needs to be satisfied without colliding with the period of the CSI-RS, and the period of the CSI-RS may be configured to be an integer multiple of the period of the time-frequency tracking reference signal. For example, the period of the CSI-RS is configured as a, the period of the time-frequency tracking reference signal is configured as b, and b < a, it needs to be satisfied that a can be divided by b, that is, a is an integer multiple of b.
In a specific implementation, the time frequency tracking reference signals may be configured to have the same corresponding time frequency resource location in each period. For example, when the first part of the time-frequency tracking reference signal is configured to multiplex the CSI-RS, and the period of the time-frequency tracking reference signal is configured to be smaller than the period of the CSI-RS, because the period of the time-frequency tracking reference signal is smaller than the period of the CSI-RS, the CSI-RS which is not currently multiplexed in the period of the time-frequency tracking reference signal exists, and at this time, the time-frequency resource pattern corresponding to the first part of the time-frequency tracking reference signal in the current period is configured to be consistent with the time-frequency resource pattern of the CSI-RS, that is, the time-frequency resource positions of the time-frequency tracking reference signal in each period are the same.
S303, configuring the second part of the time frequency tracking reference signal not to conflict with the reference signals of other non-co-site-planning sites.
In specific implementation, since the tracking range and the tracking accuracy of the CSI-RS signal cannot meet the performance requirement of the time-frequency tracking reference signal, thereby affecting the time-frequency deviation rectification performance of the UE, the second part of the time-frequency tracking reference signal may be configured in addition to the first part of the time-frequency tracking reference signal multiplexing the CSI-RS.
In a specific implementation, in order to ensure that the configurable time frequency tracking reference signal does not overlap with reference signals of other types of non-Quasi Co-Located (QCLs), a time frequency resource of the time frequency tracking reference signal may be configured to be Located before or behind a time frequency resource corresponding to the CSI-RS in a time domain.
In a specific implementation, when configuring the first part of the time-frequency tracking reference signal to multiplex the CSI-RS, parameters of the time-frequency tracking reference signal may be specifically configured as follows:
and configuring the length of the time frequency tracking reference signal to be 1 time slot or 2 time slots. For example, in a connected state, the length of the time frequency tracking reference signal is configured to be 1 time slot, that is, 14 OFDM symbols, so that the UE performs more accurate time frequency offset correction to obtain better receiver performance. And in a cold starting state, configuring the length of the time frequency tracking reference signal to be 2 time slots so as to save signaling overhead.
And configuring the period of the time frequency tracking reference signal to be 5ms or 1 ms. For example, 5ms is configured in normal circumstances to save signaling overhead. The time-frequency offset correction method is configured to be 1ms in a high-speed moving environment, so that more accurate time-frequency offset correction is performed, and better receiver performance is obtained.
And in each time slot, configuring the number of contained OFDM symbols of the time frequency tracking reference signal to be 2 or 4. For example, 2 is configured in normal circumstances to save signaling overhead. The configuration is 4 under the high-speed moving environment, so that more accurate time-frequency deviation correction is carried out, and better receiver performance is obtained.
And configuring the frequency band broadband of the time frequency tracking reference signal to be more than 24 RBs for the subcarrier with 15kHz, namely configuring the frequency band broadband of the time frequency tracking reference signal to be more than 360 kHz.
And configuring the frequency domain interval of the time-frequency tracking reference signal to be 6 subcarriers or consistent with the frequency domain interval of the single-port CSI-RS.
And configuring the time domain interval of the time frequency tracking reference signal to be non-uniformly distributed.
In a specific implementation, the time-frequency position and the density of the time-frequency tracking reference signal determine the range and the precision of the time-frequency tracking. When the UE carries out time synchronization tracking, the frequency domain interval of the time frequency tracking reference signal determines the time offset tracking range, and the larger the frequency domain interval is, the smaller the tracking range is. When the UE carries out frequency offset tracking, the time domain interval of the time frequency tracking reference signal determines the frequency offset tracking range, and the larger the time domain interval is, the smaller the tracking range is.
In specific implementation, when the time domain interval is small, the linear phase introduced by the change of the frequency offset along with the time is small, and the proportion of the frequency deviation introduced by the random noise is large, which can cause the inaccurate frequency offset estimation, so the time domain interval S is configuredtGreater than 2 OFDM symbols.
By applying the scheme, the time frequency tracking reference signal and the CSI-RS are configured to be quasi-co-sited or correspond to the same antenna port, and the first part of the time frequency tracking reference signal is further configured to multiplex the CSI-RS, so that the cost of the reference signal can be reduced, and the utilization rate of system resources is improved; by configuring that the second part of the time frequency tracking reference signal does not conflict with reference signals of other non-co-site sites, the UE can carry out accurate time frequency estimation, thereby obtaining better receiver performance.
In order to make those skilled in the art better understand and implement the present invention, the embodiment of the present invention provides a schematic diagram of corresponding time-frequency resources of a time-frequency tracking reference signal in an RB, as shown in fig. 4.
Referring to fig. 4, the CSI-RS is configured with 2 ports, and since the frequency domain density of the CSI-RS can be equivalent to one RE occupied by one port in one RB, the CSI-RS of port 0 or port 1 is configured to be multiplexed by the first part of the time-frequency tracking reference signal.
Since the tracking range and tracking accuracy of the CSI-RS signal cannot meet the performance requirements of the time-frequency tracking reference signal, thereby affecting the time-frequency rectification performance of the UE, the second part of the time-frequency tracking reference signal may be configured in addition to the first part of the time-frequency tracking reference signal multiplexing the CSI-RS. And configuring the time frequency resources of the second part of the time frequency tracking reference signals to be positioned in front of the time frequency resources corresponding to the CSI-RS on the time domain in order to ensure that the time frequency tracking reference signals do not conflict with other reference signals of the non-co-site-intended site.
When the time interval is small, the linear phase introduced by the change of frequency deviation along with time is small, and the frequency introduced by random noiseThe frequency deviation is large in proportion, which can cause inaccurate frequency deviation estimation, so that the time domain interval S of the time frequency tracking reference signal is configuredtGreater than 2 OFDM symbols, and 3 OFDM symbols.
Since the frequency domain interval of the CSI-RS is generally within 6 subcarriers, the frequency domain interval S of the time-frequency tracking reference signal is configuredfIs 6 sub-carriers.
In order to make those skilled in the art better understand and implement the present invention, another schematic diagram of the corresponding time-frequency resource of the time-frequency tracking reference signal in one RB is provided in the embodiment of the present invention, as shown in fig. 5.
Referring to fig. 5, the CSI-RS is configured to have 1 port, the frequency domain density of the port occupies 2 REs on one OFDM symbol in one RB, and the frequency domain interval is 6 subcarriers, so that the first part of the time-frequency tracking reference signal is configured to multiplex the 2 REs for time-frequency tracking.
Since the tracking range and tracking accuracy of the CSI-RS signal cannot meet the performance requirements of the time-frequency tracking reference signal, thereby affecting the time-frequency rectification performance of the UE, the second part of the time-frequency tracking reference signal may be configured in addition to the first part of the time-frequency tracking reference signal multiplexing the CSI-RS. And configuring the time frequency resources of the second part of the time frequency tracking reference signals to be positioned in front of the time frequency resources corresponding to the CSI-RS on the time domain in order to ensure that the time frequency tracking reference signals do not conflict with other reference signals of the non-co-site-intended site.
When the time interval is small, the linear phase introduced by the change of the frequency offset along with the time is small, and the proportion of the frequency deviation introduced by the random noise is large, which may cause the inaccurate frequency offset estimation, so the time interval S of the time-frequency tracking reference signal is configured in this embodimenttGreater than 2 OFDM symbols, and 3 OFDM symbols.
Since the frequency domain interval of the CSI-RS is 6 subcarriers, the frequency domain interval S of the time frequency tracking reference signal is configuredfIs 6 sub-carriers.
In order to make those skilled in the art better understand and implement the present invention, the embodiment of the present invention provides another schematic diagram of corresponding time-frequency resources of a time-frequency tracking reference signal in an RB, as shown in fig. 6.
Referring to fig. 6, the period of the time-frequency tracking reference signal is configured to be smaller than that of the CSI-RS, and the period of the CSI-RS is twice as long as that of the time-frequency tracking reference signal. If the reusable CSI-RS exists in the period of the current time frequency reference signal, configuring a first part of the time frequency reference signal to multiplex the CSI-RS; and if the reusable CSI-RS exists in the period of the current time frequency reference signal, configuring a time frequency resource pattern of the first part of the time frequency reference signal corresponding to the current period to be consistent with the time frequency resource pattern of the CSI-RS.
In order to make those skilled in the art better understand and implement the present invention, the embodiment of the present invention provides a base station, as shown in fig. 7.
Referring to fig. 7, the base station 70 includes: a first configuration unit 71, a second configuration unit 72 and a third configuration unit 73, wherein:
the first configuration unit 71 is adapted to configure the time-frequency tracking reference signal and the CSI-RS quasi-co-site or correspond to the same antenna port.
The second configuration unit 72 is adapted to configure the first part of the time-frequency tracking reference signal to multiplex CSI-RS.
The third configuration unit 73 is adapted to configure the second part of the time frequency tracking reference signal not to collide with other reference signals of non-co-sited sites.
In a specific implementation, the second configuration unit 72 includes: a first configuration subunit 721 and a second configuration subunit 722, wherein:
the first configuration subunit 721 is adapted to configure the first part of the time-frequency tracking reference signal to multiplex the CSI-RS when the CSI-RS is configured as a single port.
The second configuration subunit 722 is adapted to configure the first portion of the time-frequency tracking reference signal to multiplex the CSI-RS of only one port when the CSI-RS is configured as a multi-port.
In a specific implementation, the base station 70 may further include: a fourth configuration unit 74 adapted to dynamically or semi-statically configure the period of the time-frequency tracking reference signal.
In a specific implementation, the period of the time-frequency tracking reference signal is less than or equal to the period of the CSI-RS.
In an embodiment of the present invention, when the period of the time-frequency tracking reference signal is smaller than the period of the CSI-RS, the period of the CSI-RS is an integer multiple of the period of the time-frequency tracking reference signal.
In a specific implementation, the base station 70 may further include: a fifth configuration unit 75, adapted to configure the time frequency tracking reference signals to have the same corresponding time frequency resource location in each period.
In a specific implementation, the third configuration unit is adapted to configure the time-frequency resource corresponding to the second part of the time-frequency tracking reference signal to be located before or after the time-frequency resource corresponding to the CSI-RS in a time domain.
In an embodiment of the present invention, the second configuration unit 72 further includes: a third configuration subunit 723, adapted to configure: the length of the time frequency tracking reference signal is 1 time slot or 2 time slots; the period of the time frequency tracking reference signal is 5ms or 1 ms; in each time slot, the number of OFDM symbols contained in the time frequency tracking reference signal is 2 or 4; the frequency band broadband of the time frequency tracking reference signal is more than 24 RBs; the frequency domain interval of the time-frequency tracking reference signal is 6 subcarriers or is consistent with the frequency domain interval of the single-port CSI-RS; the time domain interval of the time frequency tracking reference signal is more than 2 OFDM symbols and is non-uniformly distributed.
The embodiment of the present invention further provides a computer readable medium, where a computer instruction is stored, and when the computer instruction runs, the step corresponding to the time-frequency tracking reference signal configuration method is executed, which is not described again.
The embodiment of the present invention further provides a base station, which includes a memory and a processor, where the memory stores a computer instruction capable of running on the processor, and the processor executes, when running the computer instruction, the step corresponding to the time-frequency tracking reference signal configuration method, which is not described again.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (18)
1. A method for configuring a time-frequency tracking reference signal, comprising:
configuring the time-frequency tracking reference signal and a CSI-RS quasi-common site or corresponding to the same antenna port;
configuring a first portion of the time-frequency tracking reference signal to multiplex the CSI-RS;
and configuring the second part of the time frequency tracking reference signal not to conflict with other reference signals of non-co-site-like sites.
2. The method of claim 1, wherein the configuring the CSI-RS multiplexed by the first portion of the time-frequency tracking reference signal comprises:
when the CSI-RS is configured to be a single port, configuring a first part of the time-frequency tracking reference signal to multiplex the CSI-RS;
configuring a first portion of the time-frequency tracking reference signal to multiplex the CSI-RS of only one port when the CSI-RS is configured as a multi-port.
3. The method for configuring time-frequency tracking reference signals according to claim 1, further comprising: and dynamically configuring or semi-statically configuring the period of the time frequency tracking reference signal.
4. The method according to claim 3, wherein the periodicity of the time-frequency tracking reference signal is configured to be less than or equal to the periodicity of the CSI-RS.
5. The method according to claim 4, wherein when the periodicity of the time-frequency tracking reference signal is smaller than the periodicity of the CSI-RS, the CSI-RS periodicity is configured to be an integer multiple of the periodicity of the time-frequency tracking reference signal.
6. The method according to claim 5, wherein the corresponding time-frequency resources of the time-frequency tracking reference signal in each period are configured to have the same location.
7. The method of claim 1, wherein configuring the second portion of the time frequency tracking reference signal to not collide with other non co-sited reference signals comprises:
and configuring the time frequency resource corresponding to the second part of the time frequency tracking reference signal to be positioned in front of or behind the time frequency resource corresponding to the CSI-RS on the time domain.
8. The method of claim 1, wherein when configuring the CSI-RS for the first portion of the time-frequency tracking reference signal, the specific configuring of the parameters of the time-frequency tracking reference signal comprises:
configuring the length of the time frequency tracking reference signal to be 1 time slot or 2 time slots;
configuring the period of the time frequency tracking reference signal to be 5ms or 1 ms;
in each time slot, configuring the number of OFDM symbols contained in the time frequency tracking reference signal to be 2 or 4;
configuring the frequency band broadband of the time frequency tracking reference signal to be more than 24 RBs;
configuring the frequency domain interval of the time-frequency tracking reference signal to be 6 subcarriers or consistent with the frequency domain interval of a single-port CSI-RS;
and configuring the time domain interval of the time frequency tracking reference signal to be more than 2 OFDM symbols which are in non-uniform distribution.
9. A base station, comprising:
the first configuration unit is suitable for configuring the time-frequency tracking reference signal and the CSI-RS quasi-common-site or corresponding to the same antenna port;
a second configuration unit, adapted to configure a first portion of the time-frequency tracking reference signal to multiplex the CSI-RS;
and the third configuration unit is suitable for configuring the second part of the time frequency tracking reference signal not to conflict with the reference signals of other non-quasi co-site addresses.
10. The base station of claim 9, wherein the second configuration unit comprises: a first configuration subunit and a second configuration subunit, wherein:
the first configuration subunit is adapted to configure a first portion of the time-frequency tracking reference signal to multiplex the CSI-RS when the CSI-RS is configured as a single port;
the second configuration subunit is adapted to configure the first portion of the time-frequency tracking reference signal to multiplex the CSI-RS of only one port when the CSI-RS is configured as a multi-port.
11. The base station of claim 9, further comprising: and the fourth configuration unit is suitable for dynamically or semi-statically configuring the period of the time frequency tracking reference signal.
12. The base station according to claim 11, wherein said fourth configuration unit is adapted to configure the periodicity of the time-frequency tracking reference signal to be less than or equal to the periodicity of CSI-RS.
13. The base station of claim 12, wherein the fourth configuration unit comprises: and the third configuration subunit is suitable for configuring the CSI-RS period to be integral multiple of the period of the time-frequency tracking reference signal when the period of the time-frequency tracking reference signal is smaller than the period of the CSI-RS.
14. The base station of claim 13, further comprising: and the fifth configuration unit is suitable for configuring the time frequency tracking reference signals to have the same corresponding time frequency resource position in each period.
15. The base station according to claim 9, wherein the third configuring unit is adapted to configure the time-frequency resources corresponding to the second part of the time-frequency tracking reference signal to be located before or after the time-frequency resources corresponding to the CSI-RS in the time domain.
16. The base station of claim 9, wherein the second configuration unit further comprises: a fourth configuration subunit adapted to configure: the length of the time frequency tracking reference signal is 1 time slot or 2 time slots; the period of the time frequency tracking reference signal is 5ms or 1 ms; in each time slot, the number of OFDM symbols contained in the time frequency tracking reference signal is 2 or 4; the frequency band broadband of the time frequency tracking reference signal is more than 24 RBs; the frequency domain interval of the time-frequency tracking reference signal is 6 subcarriers or is consistent with the frequency domain interval of the single-port CSI-RS; the time domain interval of the time frequency tracking reference signal is more than 2 OFDM symbols and is non-uniformly distributed.
17. A computer-readable medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps corresponding to the method according to any one of claims 1 to 8.
18. A base station comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, the processor when executing the computer program performing the steps corresponding to the method of any one of claims 1 to 8.
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| CN111818660B (en) * | 2019-08-05 | 2023-04-04 | 维沃移动通信有限公司 | Method for updating beam information, terminal equipment and network equipment |
| CN111417187B (en) * | 2020-03-25 | 2022-02-22 | 展讯通信（上海）有限公司 | Method and device for determining actual TRS frequency domain resource, storage medium and UE |
| CN115715003B (en) * | 2023-01-09 | 2023-04-11 | 四川创智联恒科技有限公司 | Time offset adjusting method and system for high-speed mobile communication system |
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