CN109327290B - Method, device, terminal, base station and communication equipment for sending sounding reference signal - Google Patents
Method, device, terminal, base station and communication equipment for sending sounding reference signal Download PDFInfo
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- CN109327290B CN109327290B CN201710639868.XA CN201710639868A CN109327290B CN 109327290 B CN109327290 B CN 109327290B CN 201710639868 A CN201710639868 A CN 201710639868A CN 109327290 B CN109327290 B CN 109327290B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
Abstract
The invention provides a method, a device, a terminal, a base station and communication equipment for sending a sounding reference signal. The sending method comprises the following steps: acquiring transmission configuration information for Sounding Reference Signal (SRS) transmission; the transmission configuration information is used to indicate whether the terminal is allowed to transmit the SRS2 of some of the configured ports on one orthogonal frequency division multiplexing OFDM symbol. By adopting the method of the invention, the terminal can acquire the sending configuration information in advance, and can only send the SRS of a part of ports on one OFDM symbol according to the sending configuration information, thereby avoiding the waste of power caused by sending the SRS of the port with poor channel condition, improving the SRS sending power of the port with good channel condition to a certain extent, and improving the channel estimation performance.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method, an apparatus, a terminal, a base station, and a communication device for sending a sounding reference signal.
Background
In the 3.5GHz new radio NR, since the terminal has multiple transmit antennas, it is necessary to support multi-port sounding reference signal SRS transmission. At present, in standardization, SRS supporting multiple ports are transmitted on consecutive N orthogonal frequency division multiplexing OFDM symbols, and SRS of multiple ports are transmitted simultaneously on one OFDM symbol.
In practical applications, for a mode in which a terminal UE simultaneously transmits SRSs of multiple ports on one OFDM symbol, because there are situations in which channel conditions corresponding to some ports are better and channel conditions corresponding to some ports are worse, for example, for edge UEs, the situation is common, and in this situation, if the UE still uses an OFDM symbol to simultaneously transmit SRSs of multiple ports, a certain power will be wasted to transmit the SRS on the port with the worse channel condition, so that the SRS transmission power of the port with the better channel condition is affected to a certain extent, and channel estimation performance is degraded.
Disclosure of Invention
The technical scheme of the invention aims to provide a method, a device, a terminal, a base station and a communication device for sending sounding reference signals, which are used for solving the problems of power waste and low channel estimation performance caused by the fact that SRS of a plurality of ports are simultaneously sent on one OFDM symbol in the prior art.
The embodiment of the invention provides a method for sending a sounding reference signal, which is applied to a terminal, wherein the method comprises the following steps:
acquiring transmission configuration information for Sounding Reference Signal (SRS) transmission; the sending configuration information is used to indicate whether the terminal is allowed to send the SRS of a part of the configured ports on one OFDM symbol.
Preferably, the method for transmitting sounding reference signals, wherein the step of acquiring transmission configuration information for sounding reference signal, SRS, transmission includes:
receiving a high-level signaling sent by a base station; the high-level signaling includes the sending configuration information.
Preferably, the method for transmitting sounding reference signals, wherein the step of acquiring transmission configuration information for sounding reference signal, SRS, transmission includes:
acquiring the sending configuration information according to the pre-configuration of the terminal;
wherein the pre-configuration includes the sending configuration information.
Preferably, the method for transmitting the sounding reference signal further includes:
and when the sending configuration information indicates that the terminal is allowed to send the SRS of a part of the ports in the configured ports on one OFDM symbol, sending the SRS of the part of the ports in the configured ports.
Preferably, the method for transmitting the sounding reference signal further includes:
and acquiring resource configuration information of the SRS configured by the base station and used for sending the configured ports, wherein the SRS of different ports correspond to different configuration resources.
Preferably, the method for transmitting the sounding reference signal, wherein the configuration resource includes a base sequence address, a phase rotation address and/or a frequency resource.
Preferably, the sounding reference signal transmission method includes that the transmission configuration information further includes a trigger configuration condition for instructing the terminal to transmit SRS of a part of configured ports on one OFDM symbol.
Another embodiment of the present invention provides a method for sending a sounding reference signal, which is applied to a base station, where the method includes:
sending configuration information used for sending Sounding Reference Signals (SRS) to a terminal; the sending configuration information is used to indicate whether the terminal is allowed to send the SRS of a part of the configured ports on one OFDM symbol.
Preferably, the method for transmitting the sounding reference signal, wherein the step of transmitting the transmission configuration information for sounding reference signal, SRS, to the terminal includes:
sending a high-level signaling to the terminal; wherein the high layer signaling includes the sending configuration information.
Preferably, the method for transmitting the sounding reference signal further includes:
and sending resource configuration information for sending SRS sending of the configured ports to the terminal, wherein the SRS of different ports correspond to different configuration resources.
Preferably, the method for transmitting the sounding reference signal, wherein the configuration resource includes a base sequence address, a phase rotation address and/or a frequency resource.
Preferably, the sounding reference signal transmission method includes that the transmission configuration information further includes a trigger configuration condition for instructing the terminal to transmit SRS of a part of configured ports on one OFDM symbol.
Another embodiment of the present invention provides a terminal, which includes a processor, configured to:
acquiring transmission configuration information for Sounding Reference Signal (SRS) transmission; the sending configuration information is used to indicate whether the terminal is allowed to send the SRS of a part of the configured ports on one OFDM symbol.
Preferably, the terminal, wherein the terminal further includes:
the first transceiver is used for receiving a high-level signaling sent by a base station; the high-level signaling comprises the sending configuration information;
and the processor acquires the sending configuration information according to the high-level signaling.
Preferably, the terminal, wherein the processor obtains the sending configuration information according to a pre-configuration of the terminal;
wherein the pre-configuration includes the sending configuration information.
Preferably, the terminal, wherein the terminal further includes:
and a second transceiver, configured to send SRS for some ports in the configured ports when the sending configuration information indicates that the terminal is allowed to send SRS for some ports in the configured ports on one OFDM symbol.
Preferably, the terminal, wherein the terminal further includes:
and a third transceiver, configured to acquire resource configuration information of the SRS, configured by the base station to send the configured port, where the SRS of different ports correspond to different configuration resources.
Preferably, the terminal, wherein the configuration resource includes a basic sequence address, a phase rotation address and/or a frequency resource.
Preferably, the terminal, wherein the transmission configuration information further includes a trigger configuration condition for instructing the terminal to transmit SRS of a part of the configured ports on one OFDM symbol.
Another embodiment of the present invention further provides a base station, which includes a fourth transceiver, where the fourth transceiver is configured to:
and sending configuration information for sending Sounding Reference Signals (SRS) to a terminal, wherein the sending configuration information is used for indicating whether the terminal is allowed to send the SRS of a part of ports in the configured ports on one Orthogonal Frequency Division Multiplexing (OFDM) symbol.
Preferably, in the base station, the fourth transceiver is specifically configured to: sending a high-level signaling to the terminal; the high-level signaling includes the sending configuration information.
Preferably, the base station, wherein the base station further comprises:
and a fifth transceiver, configured to send, to the terminal, resource configuration information for sending SRSs of the configured ports, where SRSs of different ports correspond to different configured resources.
Preferably, the base station, wherein the configuration resource includes a basic sequence address, a phase rotation address and/or a frequency resource.
Preferably, in the base station, the transmission configuration information further includes a trigger configuration condition for instructing the terminal to transmit SRS of a part of the configured ports on one OFDM symbol.
The embodiment of the invention also provides communication equipment, which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor; wherein the processor implements the method for transmitting the sounding reference signal as described in any of the above when executing the program.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the program, when executed by a processor, implements the method for transmitting the sounding reference signal according to any one of the above descriptions.
One or more embodiments of the invention have at least the following beneficial effects:
by adopting the method of the embodiment of the invention, the terminal can acquire the sending configuration information in advance, and can only send the SRS of a part of ports on one OFDM symbol according to the sending configuration information, thereby avoiding the waste of power caused by sending the SRS of the port with poor channel condition, improving the SRS sending power of the port with good channel condition to a certain extent, and improving the channel estimation performance.
Drawings
Fig. 1 is a flowchart illustrating a method for sending a sounding reference signal according to an embodiment of the present invention;
fig. 2 is a second flowchart illustrating a method for sending a sounding reference signal according to a second embodiment of the present invention;
fig. 3 is a third schematic flowchart of a method for sending a sounding reference signal according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a base station according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The sending method of the sounding reference signal according to the specific embodiment of the present invention is applied to a terminal, and as shown in fig. 1, the sending method includes:
step S110, obtaining sending configuration information for sending the sounding reference signal SRS, where the sending configuration information is used to indicate whether the terminal is allowed to send the SRS of a part of the configured ports on one OFDM symbol.
By adopting the method for sending the sounding reference signal according to the specific embodiment of the present invention, the terminal may obtain the sending configuration information in advance, and according to the sending configuration information, when the terminal is instructed to be allowed to send the SRS of a part of the ports configured on one OFDM symbol, the terminal may only send the SRS of a part of the ports on one OFDM symbol, thereby avoiding power waste due to sending the SRS of the port with poor channel condition, and thus improving the SRS sending power and channel estimation performance of the port with good channel condition to a certain extent.
In one aspect of the method for sending a sounding reference signal according to the embodiment of the present invention, the sending configuration information is used to indicate whether the base station allows the terminal to send the SRS of a part of the configured ports on one OFDM symbol, where the configured port is greater than or equal to 2.
In addition, with the method for sending a sounding reference signal according to the specific embodiment of the present invention, before step S110, the method further includes:
and acquiring resource configuration information of the SRS configured by the base station and used for sending the configured ports, wherein the SRS of different ports correspond to different configuration resources.
For example, the base station configures SRS of x (x is greater than or equal to 2) ports for the terminal, and different ports may use different configuration resources. In particular, the configuration resource includes a base sequence address base sequence ID, a phase rotation address phase rotation ID, and/or a frequency resource COMB.
Through the steps, when the terminal sends the SRS of part of the ports or the SRS of all the ports on one OFDM symbol, the terminal adopts the configuration resources configured by the base station to send and distinguish.
In addition, in the method for transmitting a sounding reference signal according to the specific embodiment of the present invention, in step S110, the step of acquiring transmission configuration information for sounding reference signal SRS transmission includes:
receiving a high-level signaling sent by a base station; the high layer signaling includes sending configuration information.
Specifically, the sending configuration information may be obtained according to a higher layer signaling.
By adopting the step, the base station sends a high-level signaling to the terminal, and indicates the sending configuration information to the terminal, so as to indicate whether the base station allows the terminal to send the SRS of a part of the ports in the configured ports on one OFDM symbol, namely indicate whether the base station allows the terminal to send the SRS of a y port, wherein y is smaller than x.
For example, a base station sends 1-bit high-level signaling to a terminal, and when the high-level signaling is "1", the base station indicates that the terminal is allowed to send SRSs of a part of ports in a configured port; when the higher layer signaling is "0", it indicates that the terminal is not allowed to transmit the SRS of a part of the configured ports, and only the terminal is allowed to transmit the SRS of all the configured ports.
In addition, in the method for transmitting a sounding reference signal according to the specific embodiment of the present invention, in step S110, the step of acquiring transmission configuration information for sounding reference signal SRS transmission includes:
acquiring the sending configuration information according to the pre-configuration of the terminal;
wherein the pre-configuration includes the sending configuration information.
Specifically, in the pre-configuration of the terminal, the transmission configuration information may be used to instruct the base station to allow the terminal to transmit the SRS of a part of the ports in the configured port on one OFDM symbol, that is, according to the pre-configuration, the base station allows the terminal to transmit the SRS of a part of the ports in the configured port on one OFDM symbol by default.
In the foregoing manner, the terminal and the base station respectively perform pre-configuration setting to indicate whether the terminal is allowed to transmit the SRS of a part of the ports in the configured ports on one OFDM symbol, and preferably, when the terminal is allowed to transmit the SRS of a part of the ports in the configured ports on one OFDM symbol, the terminal is set to transmit configuration information, and by transmitting the configuration information, the terminal is allowed to transmit the SRS of a part of the ports in the configured ports on one OFDM symbol by default.
Further, in step S110, preferably, in the step of obtaining the transmission configuration information for sending the sounding reference signal SRS, when the transmission configuration information is used to instruct the base station to allow the terminal to send the SRS of a part of the ports in the configured ports on one OFDM symbol, the transmission configuration information further includes a trigger configuration condition used to instruct the terminal to send the SRS of a part of the ports in the configured ports on one OFDM symbol.
For example, the trigger configuration condition may be initiated when the signal strength difference between the ports reaches a preset value, and for example, when the base station configures SRSs of 2 ports for the terminal, the trigger configuration condition that the terminal is allowed to transmit SRSs of 1 port on one OFDM symbol may be indicated as: the difference between the signal strength of the port with poor signal strength and the port with good signal strength in the 2 ports exceeds 6 dB.
Based on the set trigger configuration conditions, the terminal can quickly identify which port has a poor channel condition according to the downlink reference signal, and when it is detected that the difference between the signal strength of the port with poor signal strength and the signal strength of the port with good signal strength in 2 ports exceeds 6dB, the terminal sends the SRS of 1 port on one OFDM symbol.
Of course, it is understood that the set trigger configuration condition is not limited to the above one, and when the sounding reference signal is sent by using the method according to the embodiment of the present invention, the trigger configuration condition may be set according to the requirement of actual signal transmission.
In the method for sending a sounding reference signal according to the specific embodiment of the present invention, by sending configuration information that includes sending configuration information used for sending a sounding reference signal SRS and a trigger configuration condition used for instructing a terminal to send SRSs of a part of ports in a configured port on an orthogonal frequency division multiplexing OFDM symbol, when the terminal detects that the sending of the current sounding reference signal SRS meets the trigger configuration condition, the terminal sends the SRS of the part of ports in the configured port on an orthogonal frequency division multiplexing OFDM symbol; and when the terminal detects that the sending of the current sounding reference signal SRS does not accord with the triggering configuration condition, sending the SRS of all the configured ports on one orthogonal frequency division multiplexing OFDM symbol.
Therefore, referring to fig. 2, in the method for transmitting a sounding reference signal according to the embodiment of the present invention, after the step of acquiring transmission configuration information for sending a sounding reference signal SRS in step S110, the method further includes the steps of:
s120, when the sending configuration information indicates that the terminal is allowed to send SRSs of some ports in the configured ports on one OFDM symbol, sending the SRSs of some ports in the configured ports.
For example, when the base station configures an SRS with 2 ports for the terminal, and determines that the base station allows the terminal to transmit the SRS with 1 port on one OFDM symbol according to the transmission configuration information, if the 2 ports are distinguished by a base sequence ID, the terminal may transmit the SRS with 1 port only with 1 base sequence ID; if 2 ports are distinguished by phase rotation address phase rotation ID, the terminal can only use 1 phase rotation ID to send SRS of 1 port; if 2 ports are distinguished by frequency resources COMB, a terminal may transmit SRS of 1 port with only 1 COMB.
By adopting the method for sending the sounding reference signal according to the embodiment of the present invention, the terminal can send the SRS of a part of the ports configured on one OFDM symbol, and power waste caused by sending the SRS of the port with poor channel condition is avoided, so that the SRS sending power of the port with good channel condition is improved to a certain extent, and the channel estimation performance is improved.
Another aspect of the present invention also provides a method for sending a sounding reference signal, which is applied to a base station, and referring to fig. 3, the method includes:
s310, sending configuration information used for sending Sounding Reference Signals (SRS) to a terminal; the sending configuration information is used to indicate whether the terminal is allowed to send the SRS of a part of the configured ports on one OFDM symbol.
In one aspect of the method for sending a sounding reference signal according to the embodiment of the present invention, the sending configuration information is used to indicate whether the base station allows the terminal to send the SRS of a part of the configured ports on one OFDM symbol, where the configured port is greater than or equal to 2.
Specifically, in step S310, the step of transmitting the transmission configuration information for SRS transmission to the terminal includes:
sending a high-level signaling to the terminal; wherein the high layer signaling includes the sending configuration information.
By adopting the method for sending the sounding reference signal according to the embodiment of the present invention, the terminal can obtain the sending configuration information by sending the high-level signaling to the terminal, so as to indicate whether the base station allows the terminal to send the SRS of a part of the configured ports on one OFDM symbol. Therefore, the terminal can only send the SRS of a part of ports on one OFDM symbol, and the power waste caused by sending the SRS of the port with poor channel condition is avoided, so that the SRS sending power and the channel estimation performance of the port with good channel condition are improved to a certain extent.
For example, a base station sends 1-bit high-level signaling to a terminal, and when the high-level signaling is "1", the base station indicates that the terminal is allowed to send SRSs of a part of ports in a configured port; when the higher layer signaling is "0", it indicates that the terminal is not allowed to transmit the SRS of a part of the configured ports, and the terminal is only allowed to transmit the SRS of all the configured ports.
Of course, the manner in which the base station transmits higher layer signaling to the terminal to indicate the transmission of the configuration information is not limited to the above one.
In addition, before the step of transmitting transmission configuration information for sounding reference signal, SRS, to the terminal in step S310, the method further includes:
and sending resource configuration information for sending SRS sending of the configured ports to the terminal, wherein the SRS of different ports correspond to different configured resources.
Specifically, the base station configures SRS of x (x is greater than or equal to 2) ports for the terminal, and different ports may use different configuration resources. The configuration resource includes a base sequence address base sequence ID, a phase rotation address phase rotation ID and/or a frequency resource COMB.
Through the step, when the terminal sends the SRS of part of the ports or the SRS of all the ports on one OFDM symbol, the terminal adopts the configuration resources configured by the base station to send and distinguish.
In addition, in step S310, preferably, when transmitting the transmission configuration information for SRS transmission of the sounding reference signal to the terminal, the transmitted transmission configuration information further includes a trigger configuration condition for instructing the terminal to transmit SRS of a part of the configured ports on one OFDM symbol.
Based on the set trigger configuration condition, when the terminal detects that the SRS transmission of the current sounding reference signal meets the trigger configuration condition, the terminal transmits the SRS of a part of ports in the configured ports on one orthogonal frequency division multiplexing OFDM symbol; and when the terminal detects that the sending of the current sounding reference signal SRS does not accord with the triggering configuration condition, sending the SRS of all the configured ports on one orthogonal frequency division multiplexing OFDM symbol.
Another aspect of the specific embodiment of the present invention further provides a terminal, as shown in fig. 4, where the terminal includes:
a processor, configured to acquire transmission configuration information for sounding reference signal SRS transmission; the sending configuration information is used to indicate whether the terminal is allowed to send the SRS of a part of the configured ports on one OFDM symbol.
The terminal according to the specific embodiment of the present invention may obtain the transmission configuration information in advance, and according to the transmission configuration information, when the base station is instructed to allow the terminal to transmit the SRS of a part of the ports in the configured ports on one OFDM symbol, only the SRS of the part of the ports may be transmitted on one OFDM symbol, thereby avoiding power waste due to transmission of the SRS of the port with poor channel condition, and thus improving the SRS transmission power and the channel estimation performance of the port with good channel condition to a certain extent.
In one aspect of the embodiments of the present invention, the sending configuration information is used to indicate whether the base station allows the terminal to send the SRS of a part of the configured ports on one OFDM symbol, where the configured ports are greater than or equal to 2.
Preferably, according to fig. 4, the terminal further includes:
the first transceiver is used for receiving a high-level signaling sent by a base station; the high-level signaling comprises the sending configuration information;
and the processor acquires the sending configuration information according to the high-level signaling.
For example, the base station sends 1-bit high-level signaling to the terminal, and when the high-level signaling is "1", the signaling indicates that the terminal is allowed to send SRSs of a part of ports in the configured ports; when the higher layer signaling is "0", it indicates that the terminal is not allowed to transmit the SRS of a part of the configured ports, and only the terminal is allowed to transmit the SRS of all the configured ports.
In addition, the processor can also acquire the sending configuration information according to the pre-configuration of the terminal;
wherein the pre-configuration includes the sending configuration information.
Specifically, in the pre-configuration of the terminal, the transmission configuration information may be used to instruct the base station to allow the terminal to transmit the SRS of a part of the ports in the configured port on one OFDM symbol, that is, according to the pre-configuration, the base station allows the terminal to transmit the SRS of a part of the ports in the configured port on one OFDM symbol by default.
In the foregoing manner, the terminal and the base station respectively perform pre-configuration setting to indicate whether the terminal is allowed to transmit the SRS of a part of the ports in the configured ports on one OFDM symbol, and preferably, when the terminal is allowed to transmit the SRS of a part of the ports in the configured ports on one OFDM symbol, the terminal is set to transmit configuration information, and by transmitting the configuration information, the terminal is allowed to transmit the SRS of a part of the ports in the configured ports on one OFDM symbol by default.
Further, according to fig. 4, the terminal further includes:
and a second transceiver, configured to send SRS for some ports in the configured ports when the sending configuration information indicates that the terminal is allowed to send SRS for some ports in the configured ports on one OFDM symbol.
And, the terminal further includes:
and a third transceiver, configured to acquire resource configuration information of the SRS, configured by the base station to send the configured port, where the SRS of different ports correspond to different configuration resources.
Specifically, the configuration resource includes a base sequence address base sequence ID, a phase rotation address phase rotation ID, and/or a frequency resource COMB.
And acquiring resource configuration information through the third transceiver, and when the terminal transmits the SRS of a part of ports or the SRS of all the ports on one OFDM symbol, transmitting and distinguishing by adopting the configuration resources configured by the base station.
In addition, the transmission configuration information acquired by the processor further includes a trigger configuration condition for instructing the terminal to transmit the SRS of a part of the configured ports on one OFDM symbol.
By adopting the terminal of the embodiment of the invention, through the transmission configuration information including the transmission configuration information used for sending the sounding reference signal SRS and the trigger configuration condition used for indicating the terminal to send the SRS of part of the ports in the configured ports on one orthogonal frequency division multiplexing OFDM symbol, when the terminal detects that the current sounding reference signal SRS sending meets the trigger configuration condition, the terminal sends the SRS of part of the ports in the configured ports on one orthogonal frequency division multiplexing OFDM symbol; and when the terminal detects that the sending of the current sounding reference signal SRS does not accord with the triggering configuration condition, sending the SRS of all the configured ports on one orthogonal frequency division multiplexing OFDM symbol.
Another aspect of the specific embodiment of the present invention further provides a base station, as shown in fig. 5, the base station includes a fourth transceiver configured to:
and sending configuration information for sending Sounding Reference Signals (SRS) to a terminal, wherein the sending configuration information is used for indicating whether the terminal is allowed to send the SRS of a part of ports in the configured ports on one Orthogonal Frequency Division Multiplexing (OFDM) symbol.
In one aspect of the embodiments of the present invention, the sending configuration information is used to indicate whether the base station allows the terminal to send the SRS of a part of the configured ports on one OFDM symbol, where the configured ports are greater than or equal to 2.
Wherein the fourth transceiver is specifically configured to: sending a high-level signaling to the terminal; the high-level signaling includes the sending configuration information.
In the base station according to the embodiment of the present invention, by sending a high-level signaling to the terminal, the terminal can obtain the sending configuration information to indicate whether the base station allows the terminal to send the SRS of a part of the ports in the configured ports on one OFDM symbol. Therefore, the terminal can only send the SRS of a part of ports on one OFDM symbol, and the power waste caused by sending the SRS of the port with poor channel condition is avoided, so that the SRS sending power and the channel estimation performance of the port with good channel condition are improved to a certain extent.
For example, the base station sends 1-bit high-level signaling to the terminal, and when the high-level signaling is "1", the signaling indicates that the terminal is allowed to send SRSs of a part of ports in the configured ports; when the higher layer signaling is "0", it indicates that the terminal is not allowed to transmit the SRS of a part of the configured ports, and only the terminal is allowed to transmit the SRS of all the configured ports.
Further, the base station further includes:
and a fifth transceiver, configured to send, to the terminal, resource configuration information for sending SRSs of the configured ports, where SRSs of different ports correspond to different configured resources.
In particular, the configuration resources include base sequence addresses, phase rotation addresses and/or frequency resources.
In addition, the transmission configuration information sent by the fourth transceiver further includes a trigger configuration condition for instructing the terminal to transmit the SRS of a part of the configured ports on one OFDM symbol.
Based on the set trigger configuration condition, when the terminal detects that the SRS transmission of the current sounding reference signal meets the trigger configuration condition, the terminal transmits the SRS of a part of ports in the configured ports on one orthogonal frequency division multiplexing OFDM symbol; and when the terminal detects that the sending of the current sounding reference signal SRS does not accord with the triggering configuration condition, sending the SRS of all the configured ports on one orthogonal frequency division multiplexing OFDM symbol.
A communication device, such as a base station or a terminal, is provided in an embodiment of the present invention, and includes a memory, a processor, and a computer program stored in the memory and executable on the processor; wherein the processor implements the method for transmitting the sounding reference signal as described in any of the above when executing the program.
The specific embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method for transmitting the sounding reference signal according to any one of the above descriptions.
By adopting the method, the apparatus, the terminal, the base station, the communication device and the computer-readable storage medium according to the embodiments of the present invention, the terminal can transmit the SRS of only a part of the ports on one OFDM symbol, and avoid power waste caused by transmitting the SRS of the port with poor channel condition, thereby improving the SRS transmission power of the port with good channel condition to a certain extent and improving the channel estimation performance.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (20)
1. A method for sending a Sounding Reference Signal (SRS) is applied to a terminal, and is characterized in that the method comprises the following steps:
acquiring transmission configuration information for Sounding Reference Signal (SRS) transmission; the sending configuration information is used for indicating whether the terminal is allowed to send the SRS of a part of the configured ports on one orthogonal frequency division multiplexing OFDM symbol or not;
according to the sending configuration information, only sending the SRS of part of the configured ports on one OFDM symbol;
when the sending configuration information is used for instructing the base station to allow the terminal to send the SRS of a part of ports in the configured ports on one orthogonal frequency division multiplexing OFDM symbol, the sending configuration information further includes a trigger configuration condition used for instructing the terminal to send the SRS of a part of ports in the configured ports on one orthogonal frequency division multiplexing OFDM symbol; the method further comprises the following steps:
when a terminal detects that the SRS transmission of the current sounding reference signal meets the triggering configuration condition, the terminal transmits the SRS of a part of ports in the configured ports on an orthogonal frequency division multiplexing OFDM symbol;
the trigger configuration condition includes that the signal strength difference between the ports of the terminal reaches a preset value.
2. The SRS transmission method according to claim 1, wherein the step of obtaining transmission configuration information for SRS transmission comprises:
receiving a high-level signaling sent by a base station; the high-level signaling includes the sending configuration information.
3. The SRS transmission method according to claim 1, wherein the step of obtaining transmission configuration information for SRS transmission comprises:
acquiring the sending configuration information according to the pre-configuration of the terminal;
wherein the pre-configuration includes the sending configuration information.
4. The method according to claim 1, wherein the method further comprises:
and acquiring resource configuration information of the SRS configured by the base station and used for sending the configured ports, wherein the SRS of different ports correspond to different configuration resources.
5. The SRS transmission method according to claim 4, wherein the configuration resource comprises a base sequence address, a phase rotation address and/or a frequency resource.
6. A method for transmitting sounding reference signals, applied to a base station, the method comprising:
sending configuration information used for sending Sounding Reference Signals (SRS) to a terminal; the sending configuration information is used for indicating whether the terminal is allowed to send the SRS of a part of the configured ports on one orthogonal frequency division multiplexing OFDM symbol or not;
when the sending configuration information is used for instructing the base station to allow the terminal to send the SRS of a part of ports in the configured ports on one orthogonal frequency division multiplexing OFDM symbol, the sending configuration information further includes a trigger configuration condition used for instructing the terminal to send the SRS of a part of ports in the configured ports on one orthogonal frequency division multiplexing OFDM symbol;
the method further comprises the following steps:
when detecting that the sending of the current sounding reference signal SRS meets the triggering configuration condition, the receiving terminal sends the SRS of a part of ports in the configured ports on an orthogonal frequency division multiplexing OFDM symbol;
the trigger configuration condition includes that the signal strength difference between the ports of the terminal reaches a preset value.
7. The SRS transmission method according to claim 6, wherein the step of transmitting transmission configuration information for SRS transmission to the terminal comprises:
sending a high-level signaling to the terminal; wherein the high layer signaling includes the sending configuration information.
8. The method according to claim 6, wherein the method further comprises:
and sending resource configuration information for sending SRS sending of the configured ports to the terminal, wherein the SRS of different ports correspond to different configuration resources.
9. The method according to claim 8, wherein the configuration resource comprises a base sequence address, a phase rotation address and/or a frequency resource.
10. A terminal, comprising a processor configured to:
acquiring transmission configuration information for Sounding Reference Signal (SRS) transmission; the sending configuration information is used for indicating whether the terminal is allowed to send the SRS of a part of the configured ports on one orthogonal frequency division multiplexing OFDM symbol or not;
according to the sending configuration information, only sending the SRS of part of the configured ports on one OFDM symbol;
when the sending configuration information is used for instructing the base station to allow the terminal to send the SRS of a part of ports in the configured ports on one orthogonal frequency division multiplexing OFDM symbol, the sending configuration information further includes a trigger configuration condition used for instructing the terminal to send the SRS of a part of ports in the configured ports on one orthogonal frequency division multiplexing OFDM symbol;
the processor is further configured to:
when a terminal detects that the SRS transmission of the current sounding reference signal meets the triggering configuration condition, the terminal transmits the SRS of a part of ports in the configured ports on an orthogonal frequency division multiplexing OFDM symbol;
the trigger configuration condition includes that the signal strength difference between the ports of the terminal reaches a preset value.
11. The terminal of claim 10, further comprising:
the first transceiver is used for receiving a high-level signaling sent by a base station; the high-level signaling comprises the sending configuration information;
and the processor acquires the sending configuration information according to the high-level signaling.
12. The terminal of claim 10, wherein the processor obtains the transmit configuration information according to a pre-configuration of the terminal;
wherein the pre-configuration includes the sending configuration information.
13. The terminal of claim 10, further comprising:
and a third transceiver, configured to acquire resource configuration information of the SRS, configured by the base station to send the configured port, where the SRS of different ports correspond to different configuration resources.
14. The terminal according to claim 13, wherein the configuration resources comprise base sequence addresses, phase rotation addresses and/or frequency resources.
15. A base station, comprising a fourth transceiver configured to:
sending configuration information for sending Sounding Reference Signals (SRS) to a terminal, wherein the sending configuration information is used for indicating whether the terminal is allowed to send the SRS of a part of ports in configured ports on one Orthogonal Frequency Division Multiplexing (OFDM) symbol;
when the sending configuration information is used for instructing the base station to allow the terminal to send the SRS of a part of ports in the configured ports on one orthogonal frequency division multiplexing OFDM symbol, the sending configuration information further includes a trigger configuration condition used for instructing the terminal to send the SRS of a part of ports in the configured ports on one orthogonal frequency division multiplexing OFDM symbol;
the fourth transceiver is further configured to:
when detecting that the sending of the current sounding reference signal SRS meets the triggering configuration condition, the receiving terminal sends the SRS of a part of ports in the configured ports on an orthogonal frequency division multiplexing OFDM symbol;
the trigger configuration condition includes that the signal strength difference between the ports of the terminal reaches a preset value.
16. The base station according to claim 15, wherein the fourth transceiver is configured to: sending a high-level signaling to the terminal; the high-level signaling includes the sending configuration information.
17. The base station of claim 15, wherein the base station further comprises:
and a fifth transceiver, configured to send, to the terminal, resource configuration information for sending SRSs of the configured ports, where SRSs of different ports correspond to different configured resources.
18. The base station according to claim 17, wherein the configuration resources comprise base sequence addresses, phase rotation addresses and/or frequency resources.
19. A communication device comprising a memory, a processor and a computer program stored on the memory and executable on the processor; wherein the processor implements the method for transmitting the sounding reference signal according to any one of claims 1 to 5 or implements the method for transmitting the sounding reference signal according to any one of claims 6 to 9 when executing the program.
20. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the method for transmitting a sounding reference signal according to any one of claims 1-5 or implements the method for transmitting a sounding reference signal according to any one of claims 6-9.
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