CN108075868B - A kind of demodulation reference signal DMRS parameter configuration method, network side device and terminal - Google Patents

Abstract

The invention provides a demodulation reference signal DMRS parameter configuration method, network side equipment and a terminal, wherein the method applied to the network side equipment comprises the following steps: dividing at least one DMRS function which needs to be executed by a terminal into at least one configuration grade; and determining configuration parameters of the DMRS function included in each configuration level, and sending the configuration parameters to the terminal, wherein the configuration parameters are used for executing the DMRS function according to the configuration parameters after the terminal receives the configuration parameters. According to the scheme of the invention, the parameter data corresponding to each DMRS function can be dynamically configured for the terminal according to different function requirements of the DMRS and the configuration level of each DMRS function, so that the problems that the DMRS in a 5G system is high in cost, low in system spectrum efficiency and incapable of accurately estimating channel characteristics are solved, the transmission effectiveness and reliability are further improved, and the average transmission rate of a cell and the transmission rate of edge users are improved.

Description

A kind of demodulation reference signal DMRS parameter configuration method, network side device and terminal

technical field

The present invention relates to the field of communication technologies, and in particular, to a method for configuring DMRS parameters of a demodulation reference signal, a network side device and a terminal.

Background technique

In the traditional fourth generation (4Generation, 4G) mobile communication system, the downlink demodulation reference signal (DMR) can be used for the demodulation of traffic channels, control channels and broadcast channels. Fixed DMRS pattern design, and ZC (Zadoff Chu) sequence design, DMRS can be used to estimate channel delay spread and Doppler frequency shift.

Among them, in a Long Term Evolution (Long Term Evolution, LTE) system, a Cell Specific Reference Signal (CRS) supports a maximum of 4 antenna ports, which can be used for downlink traffic channel demodulation, and its DMRS pattern design is shown in FIG. 1 .

In the LTE system, a User Equipment Specific Reference Signal (UE-specific RS) is used for downlink traffic channel demodulation when the transmission mode is single-stream beamforming, and its DMRS pattern design is shown in FIG. 2 .

In the LTE system, the UE-specific RS supports a maximum of 4 antenna ports, which are used for downlink traffic channel demodulation when the transmission mode is multi-stream beamforming. The DMRS pattern design is shown in Figure 3.

In the future fifth generation (5Generation, 5G) mobile communication system, DMRS can be used not only for demodulation of traffic channels and control channels, but also for radio resource management (Radio Resource Management, RRM) measurement. Due to the use of higher frequencies, the system bandwidth will be wider, and the number of antennas will also increase. If the traditional fixed DMRS pattern design is still used for all bandwidths of all frequencies, the traditional fixed DMRS pattern design will no longer be applicable. The transmission resources are relatively reduced, thereby reducing the spectral efficiency of the system. In addition, the fixed DMRS pattern cannot adaptively perform channel measurement as required, thus also leading to inability to accurately estimate channel characteristics.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a demodulation reference signal DMRS parameter configuration method, network side equipment and terminal to solve the problems of large DMRS overhead, low system spectral efficiency and inability to accurately estimate channel characteristics in 5G systems.

In a first aspect, an embodiment of the present invention provides a demodulation reference signal DMRS parameter configuration method, which is applied to a network side device, and the method includes:

dividing at least one DMRS function that the terminal needs to perform into at least one configuration level;

Determine the configuration parameters of the DMRS function included in each of the configuration levels, and send the configuration parameters to the terminal, where the configuration parameters are used by the terminal after receiving the configuration parameters, according to the configuration The parameter performs the DMRS function.

In a second aspect, an embodiment of the present invention further provides a method for configuring DMRS parameters of a demodulation reference signal, which is applied to a terminal, and the method includes:

receiving a configuration parameter sent by the network side device, and executing a DMRS function corresponding to the configuration parameter according to the configuration parameter;

The configuration parameters include configuration parameters of at least one configuration level, and the configuration parameters of each configuration level correspond to at least one DMRS function.

In a third aspect, an embodiment of the present invention further provides a network side device, including:

a level configuration module, configured to divide at least one DMRS function that the terminal needs to perform into at least one configuration level;

A parameter configuration module, configured to determine the configuration parameters of the DMRS function included in each of the configuration levels, and send the configuration parameters to the terminal, where the configuration parameters are used by the terminal to receive the configuration parameters Then, the DMRS function is executed according to the configuration parameter.

In a fourth aspect, an embodiment of the present invention further provides a terminal, including:

a function execution module, configured to receive a configuration parameter sent by the network-side device, and execute a DMRS function corresponding to the configuration parameter according to the configuration parameter;

The configuration parameters include configuration parameters of at least one configuration level, and the configuration parameters of each configuration level correspond to at least one DMRS function.

In this way, in the embodiment of the present invention, by dividing at least one DMRS function that the terminal needs to perform into at least one configuration level, and determining the configuration parameters of the DMRS function included in each configuration level, the determined configuration parameters are sent to the The terminal enables the terminal to execute the corresponding DMRS function according to the configuration parameter after receiving the configuration parameter. It can be seen that the embodiments of the present invention can dynamically configure the parameter data corresponding to each DMRS function for the terminal according to the different functional requirements of the DMRS and the configuration level of each DMRS function, thereby reducing the DMRS overhead and effectively solving the problem of DMRS in the 5G system. The problems of high overhead, low system spectral efficiency, and inability to accurately estimate channel characteristics, thereby improving transmission effectiveness and reliability, and increasing the average cell transmission rate and edge user transmission rate.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the drawings that are used in the description of the embodiments of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention. , for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative labor.

Fig. 1 shows the traditional CRS antenna port pattern in LTE system;

Figure 2 shows a conventional UE-specific RS pattern when the LTE transmission mode is single-stream beamforming;

Figure 3 shows a conventional UE-specific RS pattern when the LTE transmission mode is multi-stream beamforming;

FIG. 4 shows a flowchart of a method for configuring a demodulation reference signal DMRS parameter according to the first embodiment of the present invention;

5 shows a flowchart of a method for configuring a demodulation reference signal DMRS parameter according to a second embodiment of the present invention;

FIG. 6 shows one of the schematic diagrams of the antenna ports selected by the first configuration level and the second configuration level according to the second embodiment of the present invention;

FIG. 7 shows one of the DMRS patterns of the first configuration level and the second configuration level in the second embodiment of the present invention;

FIG. 8 shows the second schematic diagram of the antenna ports selected by the first configuration level and the second configuration level according to the second embodiment of the present invention;

FIG. 9 shows the second part of the DMRS patterns of the first configuration level and the second configuration level in the second embodiment of the present invention;

10 shows a flowchart of a method for configuring a demodulation reference signal DMRS parameter according to a third embodiment of the present invention;

11 shows a flowchart of a method for configuring a demodulation reference signal DMRS parameter according to a fourth embodiment of the present invention;

FIG. 12 shows one of the structural block diagrams of the network side equipment according to the fifth embodiment of the present invention;

FIG. 13 shows the second structural block diagram of the network side device according to the fifth embodiment of the present invention;

FIG. 14 shows one of the structural block diagrams of the terminal according to the sixth embodiment of the present invention;

FIG. 15 shows the second structural block diagram of the terminal according to the sixth embodiment of the present invention;

FIG. 16 shows a structural block diagram of a terminal according to a seventh embodiment of the present invention;

FIG. 17 is a block diagram showing the structure of a network-side device according to the eighth embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

first embodiment

Embodiments of the present invention provide a method for configuring DMRS parameters of a demodulation reference signal, which is applied to a network side device, where the network device may be a base station, an evolved node, a transceiver node, etc., but is not limited to these devices. As shown in Figure 4, the method includes:

Step 401: Divide at least one DMRS function that the terminal needs to perform into at least one configuration level.

Among them, in the 5G mobile communication system, DMRS can be used not only for demodulation of traffic channels and control channels, but also for RRM measurement. In addition, the numerical configuration of different frequency bands requires different densities of time-frequency resources occupied by DMRS, and DMRS is required for phase noise estimation in high-frequency communication. Therefore, different DMRS functions require different DMRS pattern designs, so a flexible and on-demand method for configuring and transmitting DMRS is particularly important.

In the embodiment of the present invention, however, the network side device divides the DMRS function that the terminal needs to perform into at least one configuration level. Wherein, each configuration level includes at least one DMRS function. That is, in a subframe dominated by downlink traffic, each configuration level includes at least one of a control channel demodulation function, a traffic channel demodulation function, an RRM measurement function, and a phase noise estimation function. In a subframe dominated by uplink services, each configuration level includes at least one of a control channel demodulation function, a function of instructing the terminal to send a DMRS of a traffic channel, and a function of instructing the terminal to send a DMRS of a control channel.

Further, which DMRS functions are located in which configuration level, the network side device can determine according to the specific functions and requirements of the DMRS, so that the DMRS function of the high configuration level can assist the execution of the DMRS function of the low configuration level. For example, considering that the control channel needs to be demodulated first, and the DMRS has coverage requirements and transmission reliability requirements, the control channel demodulation can be set to the first configuration level. In addition, considering that the traffic channel DMRS can be dynamically changed according to the control channel indication according to actual traffic transmission requirements, the traffic channel demodulation can be set to the second configuration level.

Step 402: Determine the configuration parameters of the DMRS function included in each of the configuration levels, and send the configuration parameters to the terminal.

The configuration parameter is used for the terminal to perform the DMRS function according to the configuration parameter after receiving the configuration parameter.

After the configuration levels are divided for the DMRS functions that the terminal needs to perform in step 401, the network side device needs to further determine the configuration parameters of the DMRS functions included in each configuration level, and then send the determined configuration parameters to the terminal, so that the terminal can receive The received configuration parameter executes the corresponding DMRS function.

Wherein, if the DMRS function is different, the specific content included in the configuration parameters corresponding to the DMRS function is different. Specifically, the configuration parameters corresponding to each DMRS function include at least one of an antenna port group identifier, a time-domain density, and a frequency-domain density. Among them, the antenna port group identifier indicates the time-frequency resources occupied by a group of antenna ports; the frequency domain density indicates the proportion of frequency domain subcarriers occupied by a certain antenna port group in a partial bandwidth or full bandwidth or subband; time domain density indicates a certain The proportion of time domain symbols occupied by an antenna port group in one transmission time interval.

Therefore, the antenna port groups required by the terminal to perform different DMRS functions may be different, and the applied network resources may be different, that is, the time-domain density and frequency-domain density corresponding to different DMRS functions are different. In the embodiment of the present invention, the time-frequency resource density can be dynamically configured according to the DMRS function, instead of using a fixed pattern, thereby saving the DMRS overhead, increasing the resources for service transmission, and further improving the system spectrum efficiency .

To sum up, the embodiments of the present invention can dynamically configure the parameter data corresponding to each DMRS function for the terminal according to the different functional requirements of the DMRS and the configuration level of each DMRS function, thereby reducing the DMRS overhead and effectively solving the problems in the 5G system. DMRS has the problems of large overhead, low system spectral efficiency, and inability to accurately estimate channel characteristics, thereby improving transmission effectiveness and reliability, and increasing the average cell transmission rate and edge user transmission rate.

Second Embodiment

Embodiments of the present invention provide a method for configuring DMRS parameters of a demodulation reference signal, which is applied to a network side device, where the network device may be a base station, an evolved node, a transceiver node, etc., but is not limited to these devices. As shown in Figure 5, the method includes:

Step 501: Divide at least one DMRS function that the terminal needs to perform into at least one configuration level.

Among them, in the 5G mobile communication system, DMRS can be used not only for demodulation of traffic channels and control channels, but also for RRM measurement. In addition, the numerical configuration of different frequency bands requires different densities of time-frequency resources occupied by DMRS, and DMRS is required for phase noise estimation in high-frequency communication. Therefore, different DMRS functions require different DMRS pattern designs, so a flexible and on-demand method for configuring and transmitting DMRS is particularly important.

However, in the embodiment of the present invention, the network side device divides the DMRS function that the terminal needs to perform into a first configuration level and a second configuration level. Wherein, each configuration level includes at least one DMRS function. That is, in a subframe dominated by downlink services, both the first configuration level and the second configuration level include at least one of a control channel demodulation function, a traffic channel demodulation function, an RRM measurement function, and a phase noise estimation function . In a subframe dominated by uplink services, both the first configuration level and the second configuration level include at least one of a control channel demodulation function, a function of instructing the terminal to send a DMRS of a traffic channel, and a function of instructing the terminal to send a DMRS of a control channel.

Further, which DMRS functions are located in which configuration level, the network side device can determine according to the specific functions and requirements of the DMRS, so that the DMRS function of the high configuration level can assist the execution of the DMRS function of the low configuration level, thereby further reducing the DMRS overhead.

Therefore, preferably, in a subframe dominated by downlink services, the DMRS function in the first configuration level includes a control channel demodulation function; the DMRS function in the second configuration level includes a traffic channel demodulation function and an RRM measurement function and at least one of the phase noise estimates. For example, when the DMRS in the first configuration level includes control channel demodulation, and the DMRS function in the second configuration level includes traffic channel demodulation, consider that the control channel needs to be demodulated first, and the DMRS has coverage requirements and transmission reliability. Therefore, the control channel demodulation can be set to the first configuration level, and considering that the traffic channel DMRS can be dynamically changed according to the control channel instructions according to actual service transmission requirements, the traffic channel demodulation can be set to the second configuration level.

Similarly, preferably, in the subframe where the uplink service is the mainstay, the DMRS function in the first configuration level includes the control channel demodulation function; the DMRS function in the second configuration level includes the function of instructing the terminal to send the service channel DMRS and the function of instructing the terminal to send the service channel. At least one of the sending control channel DMRS functions, so that the control channel demodulation function in the first configuration level can assist the instructing the terminal to send the traffic channel DMRS function and/or instructing the terminal to send the control channel DMRS function in the second configuration level. implementation, thereby further reducing the DMRS overhead.

Step 502: In the subframe where the downlink service is dominant, determine the first-level configuration parameters of the DMRS function included in the first configuration level, and send the first-level configuration parameters to the terminal.

Wherein, in the subframe with the main downlink service, the first configuration level includes at least one of the control channel demodulation function, the traffic channel demodulation function, the RRM measurement function, and the phase noise estimation function, then the first level configuration parameter It includes configuration parameters corresponding to at least one of the control channel demodulation function, the traffic channel demodulation function, the RRM measurement function, and the phase noise estimation function.

In addition, in the subframe where the downlink service is dominant, the DMRS functions are different, and the specific contents included in the configuration parameters corresponding to the DMRS functions are different. Specifically, the configuration parameters corresponding to each DMRS function include at least one of an antenna port group identifier, a time-domain density, and a frequency-domain density. That is, the first-level configuration parameter includes at least one of an identifier of the first antenna port group, a first time-domain density, and a first frequency-domain density. Wherein, the identifier of the first antenna port group indicates the time-frequency resources occupied by the ports of the first antenna group; the first frequency domain density indicates the proportion of frequency domain subcarriers occupied by the first antenna port group in a partial bandwidth or full bandwidth or subband ; the first time-domain density indicates the proportion of time-domain symbols occupied by the first antenna port group in one transmission time interval.

Correspondingly, when the first-level configuration parameters include the identifier of the first antenna port group, the first time-domain density, and the first frequency-domain density, the network-side device first selects the antenna port supported by itself; Then, according to the DMRS function included in the first configuration level (that is, at least one of the control channel demodulation function, the traffic channel demodulation function, the RRM measurement function and the phase noise estimation function), from the antenna ports supported by the network side device , select the first antenna port group for performing the DMRS function included in the first configuration level; again, according to the network configuration status (such as service type, system frequency) and the DMRS function included in the first configuration level, determine the The first time-domain density and the first frequency-domain density of the DMRS function included in the first configuration level are executed, so as to acquire the specific content included in the first-level configuration parameters.

In addition, preferably, when the first-level configuration parameters are sent to the terminal, specifically: through at least one of broadcast messages, radio resource control signaling, media access layer control units, and physical layer control message indications Item, sending the first-level configuration parameters to the terminal. That is, the embodiments of the present invention provide various manners for sending the first-level configuration parameters to the terminal, so that the sending manner of the first-level configuration parameters can be reasonably selected according to the actual configuration and operating conditions of the network.

Step 503: In the subframe where the downlink service is dominant, determine the second-level configuration parameters of the DMRS function included in the second configuration level, and send the second-level configuration parameters to the terminal.

Wherein, in the subframe where the downlink service is dominant, the second configuration level includes at least one of the control channel demodulation function, the traffic channel demodulation function, the RRM measurement function, and the phase noise estimation function, then the second level configuration parameter It includes configuration parameters corresponding to at least one of the control channel demodulation function, the traffic channel demodulation function, the RRM measurement function, and the phase noise estimation function.

In addition, in the subframe where the downlink service is dominant, the DMRS functions are different, and the specific contents included in the configuration parameters corresponding to the DMRS functions are different. Specifically, the configuration parameters corresponding to each DMRS function include at least one of an antenna port group identifier, a time-domain density, and a frequency-domain density. That is, the second-level configuration parameter includes at least one of an identifier of the second antenna port group, a second time-domain density, and a second frequency-domain density. Wherein, the identifier of the second antenna port group indicates the time-frequency resources occupied by the ports of the second antenna group; the second frequency domain density indicates the proportion of frequency domain subcarriers occupied by the second antenna port group in a partial bandwidth or full bandwidth or subband ; the second time-domain density indicates the proportion of time-domain symbols occupied by the second antenna port group in one transmission time interval.

Correspondingly, when the second-level configuration parameters include the identifier of the second antenna port group, the second time-domain density, and the second frequency-domain density, the network-side device first selects the antenna port supported by itself; Then, according to the DMRS function included in the second configuration level (that is, at least one of the control channel demodulation function, the traffic channel demodulation function, the RRM measurement function and the phase noise estimation function), from the antenna ports supported by the network side device , select the second antenna port group for performing the DMRS function included in the second configuration level; again, according to the network configuration status (such as service type, system frequency) and the DMRS function included in the second configuration level, determine the The second time-domain density and the second frequency-domain density of the DMRS function included in the second configuration level are executed, so as to acquire the specific content included in the second-level configuration parameters.

In addition, preferably, when the second-level configuration parameters are sent to the terminal, specifically: through at least one of broadcast messages, radio resource control signaling, media access layer control units, and physical layer control message indications one, send the second-level configuration parameters to the terminal; or send the Some parameters in the second-level configuration parameters are sent to the terminal together with the first-level configuration parameters, and the remaining parameters in the second-level configuration parameters are sent to the terminal through physical layer downlink control information.

The remaining parameters in the second-level configuration parameters refer to parameters in the second-level configuration parameters except for some parameters sent to the terminal together with the first-level configuration parameters. For example, when the second-level configuration parameters include an antenna port group identifier of 0, a time-domain density of 1, and a frequency-domain density of 1/6, if the antenna port group identifier is 0, this parameter is the same as the first-level configuration parameter. The parameters are sent to the terminal together through at least one of the broadcast message, the radio resource control signaling, the control unit of the media access layer, and the indication of the physical layer control message, and the remaining parameters in the second-level configuration parameters include the time domain. The density is 1 and the frequency domain density is 1/6.

It can be seen from the above that the embodiments of the present invention provide various ways of sending the second-level configuration parameters to the terminal, so that the sending method of the second-level configuration parameters can be reasonably selected according to the actual configuration and operating conditions of the network. In addition, the remaining parameters in the second-level configuration parameters are sent to the terminal through the physical layer downlink control information, so that the remaining parameters in the second-level configuration parameters are carried by the physical layer downlink control information, which has a faster information transmission speed , thereby reducing the downlink control information overhead of the physical layer.

Step 504: In the subframe where the uplink service is the mainstay, determine the first-level configuration parameters of the DMRS function included in the first configuration level, and send the first-level configuration parameters to the terminal.

Wherein, in the subframe where the uplink service is dominant, the first configuration level includes at least one of the control channel demodulation function, the function of instructing the terminal to send DMRS of the service channel, and the function of instructing the terminal to send the DMRS of the control channel, then the first configuration level The parameters include configuration parameters corresponding to at least one of the control channel demodulation function, the function of instructing the terminal to send DMRS of the traffic channel, and the function of instructing the terminal to send the DMRS of the control channel.

In addition, in the subframes in which the uplink service is dominant, the DMRS functions are different, and the specific contents included in the configuration parameters corresponding to the DMRS functions are different. Specifically, the configuration parameters corresponding to each DMRS function include at least one of an antenna port group identifier, a time-domain density, and a frequency-domain density. That is, the first-level configuration parameter includes at least one of an identifier of the first antenna port group, a first time-domain density, and a first frequency-domain density. Wherein, the identifier of the first antenna port group indicates the time-frequency resources occupied by the ports of the first antenna group; the first frequency domain density indicates the proportion of frequency domain subcarriers occupied by the first antenna port group in a partial bandwidth or full bandwidth or subband ; the first time-domain density indicates the proportion of time-domain symbols occupied by the first antenna port group in one transmission time interval.

Correspondingly, when the first-level configuration parameters include the identifier of the first antenna port group, the first time-domain density, and the first frequency-domain density, the network-side device first selects the antenna port supported by itself; Then, according to the DMRS function included in the first configuration level (that is, at least one of the control channel demodulation function, the function of instructing the terminal to send the traffic channel DMRS, and the function of instructing the terminal to send the DMRS of the control channel) from the antenna port supported by the network side device , select the first antenna port group for executing the DMRS function included in the first configuration level; again, according to the network configuration status (such as service type, system frequency) and the DMRS function included in the first configuration level, determine the The first time domain density and the first frequency domain density of the DMRS function included in the first configuration level are executed, so as to obtain the specific content included in the first level configuration parameters.

In addition, preferably, when the first-level configuration parameters are sent to the terminal, specifically: through at least one of broadcast messages, radio resource control signaling, media access layer control units, and physical layer control message indications Item, sending the first-level configuration parameters to the terminal. That is, the embodiments of the present invention provide various manners for sending the first-level configuration parameters to the terminal, so that the sending manner of the first-level configuration parameters can be reasonably selected according to the actual configuration and operating conditions of the network.

Step 505: In the subframe where the uplink service is the mainstay, determine the second-level configuration parameters of the DMRS function included in the second configuration level, and send the second-level configuration parameters to the terminal.

Wherein, in the subframe where the uplink service is dominant, the second configuration level includes at least one of the control channel demodulation function, the function of instructing the terminal to send the DMRS of the service channel, and the function of instructing the terminal to send the DMRS of the control channel, then the second configuration level The parameters include configuration parameters corresponding to at least one of the control channel demodulation function, the function of instructing the terminal to send DMRS of the traffic channel, and the function of instructing the terminal to send the DMRS of the control channel.

In addition, in the subframes in which the uplink service is dominant, the DMRS functions are different, and the specific contents included in the configuration parameters corresponding to the DMRS functions are different. Specifically, the configuration parameters corresponding to each DMRS function include at least one of an antenna port group identifier, a time-domain density, and a frequency-domain density. That is, the second-level configuration parameter includes at least one of an identifier of the second antenna port group, a second time-domain density, and a second frequency-domain density. Wherein, the identifier of the second antenna port group indicates the time-frequency resources occupied by the ports of the second antenna group; the second frequency domain density indicates the proportion of frequency domain subcarriers occupied by the second antenna port group in a partial bandwidth or full bandwidth or subband ; the second time-domain density indicates the proportion of time-domain symbols occupied by the second antenna port group in one transmission time interval.

Correspondingly, when the second-level configuration parameters include the identifier of the second antenna port group, the second time-domain density, and the second frequency-domain density, the network-side device first selects the antenna port supported by itself; Then, according to the DMRS function included in the second configuration level (that is, at least one of the control channel demodulation function, the function of instructing the terminal to send the traffic channel DMRS, and the function of instructing the terminal to send the DMRS of the control channel) from the antenna port supported by the network side device , select the second antenna port group for performing the DMRS function included in the second configuration level; again, according to the network configuration status (such as service type, system frequency) and the DMRS function included in the second configuration level, determine the The second time domain density and the second frequency domain density of the DMRS function included in the second configuration level are executed, so as to obtain the specific content included in the second level configuration parameter.

In addition, preferably, when the second-level configuration parameters are sent to the terminal, specifically: through at least one of broadcast messages, radio resource control signaling, media access layer control units, and physical layer control message indications one, send the second-level configuration parameters to the terminal; or send the Some parameters in the second-level configuration parameters are sent to the terminal together with the first-level configuration parameters, and the remaining parameters in the second-level configuration parameters are sent to the terminal through physical layer downlink control information.

The remaining parameters in the second-level configuration parameters refer to parameters in the second-level configuration parameters except for some parameters sent to the terminal together with the first-level configuration parameters. For example, when the second-level configuration parameters include an antenna port group identifier of 0, a time-domain density of 1, and a frequency-domain density of 1/6, if the antenna port group identifier is 0, this parameter is the same as the first-level configuration parameter. The parameters are sent to the terminal together through at least one of the broadcast message, the radio resource control signaling, the control unit of the media access layer, and the indication of the physical layer control message, and the remaining parameters in the second-level configuration parameters include the time domain. The density is 1 and the frequency domain density is 1/6.

It can be seen from the above that the embodiments of the present invention provide various ways of sending the second-level configuration parameters to the terminal, so that the sending method of the second-level configuration parameters can be reasonably selected according to the actual configuration and operating conditions of the network. In addition, the remaining parameters in the second-level configuration parameters are sent to the terminal through the physical layer downlink control information, so that the remaining parameters in the second-level configuration parameters are carried by the physical layer downlink control information, which has a faster information transmission speed , thereby reducing the downlink control information overhead of the physical layer.

To sum up, whether in a subframe dominated by downlink services or a subframe dominated by uplink services, as long as the terminal performs different DMRS functions, the applied antenna port groups may be different, and the applied network resources may be different. It may also be different, that is, the time-domain density and frequency-domain density corresponding to different DMRS functions are different. However, in the embodiment of the present invention, whether in a subframe dominated by downlink services or a subframe dominated by uplink services, the time-frequency resource density can be dynamically configured according to the actual DMRS function, instead of adopting a fixed , which saves DMRS overhead, increases resources for service transmission, and improves system spectral efficiency. That is, the embodiments of the present invention are not only applicable to the downlink DMRS of the future 5G mobile communication system, but also applicable to the transmission of the uplink DMRS. In addition, the embodiments of the present invention are also applicable to other types of reference signals (Reference Signal, RS), such as Channel State Information Reference Signal (Channel State Information Reference Signal, CSI-RS).

Further, whether in a subframe dominated by downlink services or a subframe dominated by uplink services, the second antenna port group in the second-level configuration parameters is the first antenna port group in the first-level configuration parameters. subset of . That is, if the second antenna port group is selected from the first antenna port group, it is not necessary to re-detect other antenna ports other than the first port group, thereby reducing signaling overhead and further reducing DMRS overhead.

Further, whether in a subframe dominated by downlink services or a subframe dominated by uplink services, the first time-domain density in the first-level configuration parameters and the second time-domain density in the second-level configuration parameters There is an intersection. For example, both the first configuration level and the second configuration level include the control channel demodulation function, then the time domain density corresponding to the control channel demodulation function in the second level configuration parameter can be directly used in the first level configuration parameter and the control channel demodulation function. The time-domain density corresponding to the channel demodulation function further simplifies the determination process of the second-level configuration parameters and further reduces the DMRS overhead.

Further, whether in a subframe dominated by downlink services or a subframe dominated by uplink services, the first frequency domain density in the first-level configuration parameters and the second frequency-domain density in the second-level configuration parameters There is an intersection. For example, both the first configuration level and the second configuration level include the control channel demodulation function, then the frequency domain density corresponding to the control channel demodulation function in the second level configuration parameter can be directly used in the first level configuration parameter and the control channel demodulation function. The frequency domain density corresponding to the channel demodulation function further simplifies the determination process of the second-level configuration parameters, thereby further reducing the DMRS overhead.

As can be seen from the above, whether in a subframe dominated by downlink services or a subframe dominated by uplink services, the parameters corresponding to a certain DMRS function in the first-level configuration parameters can be multiplexed into the second-level configuration parameters. In the parameters corresponding to this DMRS function.

To sum up, the specific application examples of the embodiments of the present invention are as follows:

Example 1: In the future 5G mobile communication system, a total of 8 DMRS antenna ports are supported for downlink. Among them, the 8 antenna ports are divided into 2 antenna port groups, and each group has 4 sub-antenna ports. In addition, the first configuration level is mainly used for downlink control channel demodulation. At this time, the first configuration level supports a maximum of 2 antenna ports for transmission, the beam coverage is wide, and the beamforming gain is small; the second configuration level is mainly used. It is used for downlink traffic channel demodulation and/or RRM measurement. At this time, the second configuration level supports the transmission of a maximum of 8 antenna ports, the beam coverage is narrow, and the beamforming gain is large, as shown in Figure 6. When the first-level configuration parameters include the identifier of the first antenna port group as 0, the first time-domain density is 1, the first frequency-domain density is 1/6, and the second-level configuration parameters include the identifier of the second antenna port group as 0 and 1, when the second time domain and second frequency domain densities are 1/6, the DMRS patterns of the first configuration level and the second configuration level are shown in FIG. 7 .

Example 2: In the future 5G mobile communication system, a total of 8 DMRS antenna ports are supported for downlink. Among them, the 8 antenna ports are divided into 2 antenna port groups, and each group has 4 sub-antenna ports. In addition, the first configuration level is mainly used for downlink control channel demodulation. At this time, the first configuration level supports a maximum of 2 antenna ports for transmission, the beam coverage is wide, and the beamforming gain is small; the second configuration level is mainly used. It is used for downlink traffic channel demodulation and/or RRM measurement. At this time, the second configuration level supports the transmission of a maximum of 8 antenna ports, the beam coverage is narrow, and the beamforming gain is large, as shown in Figure 8. When the first-level configuration parameters include the identifier of the first antenna port group as 0, the first time-domain density is 1, the first frequency-domain density is 1/6, and the second-level configuration parameters include the identifier of the second antenna port group as 0, when the second time domain is 1, and the second frequency domain density is 1/6, the DMRS patterns of the first configuration level and the second configuration level are as shown in FIG. 9 .

It can be seen from this that the method for configuring the DMRS parameters of the demodulation reference signal according to the embodiment of the present invention can dynamically configure the time-frequency resource density according to the DMRS function, instead of using a fixed pattern, thereby saving the DMRS overhead and increasing the use of resources for service transmission, thereby improving the spectral efficiency of the system.

In a word, in the embodiment of the present invention, the DMRS functions that the terminal needs to perform are divided into the first configuration level and the second configuration level, and the subframes that are dominated by downlink services and the subframes that are dominated by uplink services are respectively based on The DMRS functions included in the first configuration level and the second configuration level respectively, determine the corresponding configuration parameters, and send the configuration parameters to the terminal, so that the terminal can execute the corresponding DMRS functions according to the configuration parameters after receiving the configuration parameters . It can be seen that the embodiments of the present invention can dynamically configure the parameter data corresponding to each DMRS function for the terminal according to the different functional requirements of the DMRS and the configuration level of each DMRS function, thereby reducing the DMRS overhead and effectively solving the problem of DMRS in the 5G system. The problems of high overhead, low system spectral efficiency, and inability to accurately estimate channel characteristics, thereby improving transmission effectiveness and reliability, and increasing the average cell transmission rate and edge user transmission rate.

Third Embodiment

An embodiment of the present invention provides a method for configuring DMRS parameters of a demodulation reference signal, which is applied to a terminal, wherein the terminal may be a mobile phone, a tablet computer, a Personal Digital Assistant (PDA), or a vehicle-mounted computer, etc., But not limited to these devices. As shown in Figure 10, the method includes:

Step 1001: Receive a configuration parameter sent by a network-side device, and execute a DMRS function corresponding to the configuration parameter according to the configuration parameter.

Among them, in the 5G mobile communication system, DMRS can be used not only for demodulation of traffic channels and control channels, but also for RRM measurement. In addition, the numerical configuration of different frequency bands requires different densities of time-frequency resources occupied by DMRS, and DMRS is required for phase noise estimation in high-frequency communication. However, the traditional fixed DMRS pattern limits some DMRS functions and increases the DMRS overhead. However, in the embodiment of the present invention, the configuration parameters received by the terminal are determined by the network side device according to the actual DMRS function, and the terminal can execute the corresponding DMRS function according to the dynamically changed configuration parameters.

In addition, the configuration parameters include configuration parameters of at least one configuration level, and the configuration parameters of each of the configuration levels correspond to at least one DMRS function. That is, each configuration level includes at least one DMRS function. Specifically, in a subframe dominated by downlink services, each configuration level includes at least one of a control channel demodulation function, a traffic channel demodulation function, an RRM measurement function, and a phase noise estimation function. In a subframe dominated by uplink services, each configuration level includes at least one of a control channel demodulation function, a function of instructing the terminal to send a DMRS of a traffic channel, and a function of instructing the terminal to send a DMRS of a control channel.

Therefore, in the embodiment of the present invention, when the terminal receives the parameter data dynamically configured by the network side device according to the DMRS function, it can perform control channel demodulation, traffic channel demodulation, RRM measurement, phase noise estimation, transmission according to these parameter data The functions of the traffic channel DMRS and the transmission control channel DMRS. It can be seen from this that the embodiments of the present invention can enable the terminal to perform the corresponding DMRS function as required, thereby improving the channel estimation accuracy. Among them, accurate channel estimation means that the adopted modulation and coding method is more suitable, therefore, the transmission reliability and effectiveness are improved, and the average cell and the transmission rate of edge users can be improved.

To sum up, in the embodiment of the present invention, the terminal may receive the configuration parameter sent by the network side device, and execute the DMRS function corresponding to the configuration parameter according to the configuration parameter. Among them, since the configuration parameters are dynamically configured by the network side equipment according to different functional requirements of the DMRS, the terminal can use the resources determined by the configuration parameters to perform the corresponding DMRS function, thereby reducing the DMRS overhead and effectively solving the problem of the large DMRS overhead in the 5G system. The problem of low spectral efficiency of the system and the inability to accurately estimate the channel characteristics, thereby improving the transmission effectiveness and reliability, and improving the average transmission rate of the cell and the transmission rate of edge users.

Fourth Embodiment

An embodiment of the present invention provides a method for configuring DMRS parameters of a demodulation reference signal, which is applied to a terminal, wherein the terminal may be a mobile phone, a tablet computer, a Personal Digital Assistant (PDA), or a vehicle-mounted computer, etc., But not limited to these devices. As shown in Figure 11, the method includes:

Step 1101: In the subframe where the downlink service is dominant, the first-level configuration parameters sent by the network-side device are received, and the DMRS function corresponding to the first-level configuration parameters is executed.

The DMRS functions corresponding to the first-level configuration parameters in the subframes where the downlink service is dominant include: a control channel demodulation function, a traffic channel demodulation function, a radio resource management RRM measurement function, and a phase noise estimation function. At least one item, the first-level configuration parameters include configuration parameters corresponding to at least one of the control channel demodulation function, the traffic channel demodulation function, the RRM measurement function, and the phase noise estimation function.

In addition, in the subframe where the downlink service is dominant, the DMRS functions are different, and the specific contents included in the configuration parameters corresponding to the DMRS functions are different. Specifically, the configuration parameters corresponding to each DMRS function include at least one of an antenna port group identifier, a time-domain density, and a frequency-domain density. That is, the first-level configuration parameter includes at least one of an identifier of the first antenna port group, a first time-domain density, and a first frequency-domain density. Wherein, the identifier of the first antenna port group indicates the time-frequency resources occupied by the ports of the first antenna group; the first frequency domain density indicates the proportion of frequency domain subcarriers occupied by the first antenna port group in a partial bandwidth or full bandwidth or subband ; the first time-domain density indicates the proportion of time-domain symbols occupied by the first antenna port group in one transmission time interval.

For example, when the first-level configuration parameters include configuration parameters corresponding to the control channel demodulation function, and the configuration parameters include an antenna port ID of 0, a time-domain density of 1, and a frequency-domain density of 1/6, the terminal uses The control channel is demodulated on the antenna port marked as 0 according to the resources determined by the time-domain density and the frequency-domain density.

Preferably, when the terminal receives the first-level configuration parameters, it specifically includes: receiving the network through at least one of a broadcast message, radio resource control signaling, a control unit of the media access layer, and an indication of a physical layer control message. The first-level configuration parameters sent by the side device. That is, the embodiments of the present invention provide various manners for receiving the first-level configuration parameters, so that the receiving manner of the first-level configuration parameters can be reasonably selected according to the actual configuration and operating conditions of the network.

Step 1102: In the subframe where the downlink service is dominant, the second-level configuration parameters sent by the network-side device are received, and the DMRS function corresponding to the second-level configuration parameters is executed.

The DMRS functions corresponding to the second-level configuration parameters in the subframes where the downlink service is dominant include: a control channel demodulation function, a traffic channel demodulation function, a radio resource management RRM measurement function, and a phase noise estimation function. At least one item, the second-level configuration parameters include configuration parameters corresponding to at least one of the control channel demodulation function, the traffic channel demodulation function, the RRM measurement function, and the phase noise estimation function.

In addition, in the subframe where the downlink service is dominant, the DMRS functions are different, and the specific contents included in the configuration parameters corresponding to the DMRS functions are different. Specifically, the configuration parameters corresponding to each DMRS function include at least one of an antenna port group identifier, a time-domain density, and a frequency-domain density. That is, the second-level configuration parameter includes at least one of an identifier of the second antenna port group, a second time-domain density, and a second frequency-domain density. Wherein, the identifier of the second antenna port group indicates the time-frequency resources occupied by the ports of the second antenna group; the second frequency domain density indicates the proportion of frequency domain subcarriers occupied by the second antenna port group in a partial bandwidth or full bandwidth or subband ; the second time-domain density indicates the proportion of time-domain symbols occupied by the second antenna port group in one transmission time interval.

For example, when the second-level configuration parameters include configuration parameters corresponding to the traffic channel demodulation function, and the configuration parameters include the identification of the antenna port as 0 and 1, the time-domain density and the frequency-domain density are both 1/6, then the terminal The demodulation of the traffic channel is performed using the resources determined from the time-domain density and the frequency-domain density on the antenna ports identified as 0 and 1.

Preferably, when the terminal receives the second-level configuration parameters, it specifically includes: receiving the network through at least one of broadcast messages, radio resource control signaling, control units of the media access layer, and physical layer control message indications. second-level configuration parameters sent by the side device; or receive the first level sent by the network-side device through at least one of broadcast messages, radio resource control signaling, media access layer control units, and physical layer control message indications and part of the second-level configuration parameters, and receive the remaining parameters in the second-level configuration parameters sent by the network-side device through physical layer downlink control information.

The remaining parameters in the second-level configuration parameters refer to parameters in the second-level configuration parameters except for some parameters sent to the terminal together with the first-level configuration parameters. For example, when the second-level configuration parameters include an antenna port group identifier of 0, a time-domain density of 1, and a frequency-domain density of 1/6, if the antenna port group identifier is 0, this parameter is the same as the first-level configuration parameter. The parameters are sent to the terminal together through at least one of the broadcast message, the radio resource control signaling, the control unit of the media access layer, and the indication of the physical layer control message, and the remaining parameters in the second-level configuration parameters include the time domain. The density is 1 and the frequency domain density is 1/6.

As can be seen from the above, the embodiments of the present invention provide multiple ways of receiving the second-level configuration parameters, so that the method of receiving the second-level configuration parameters can be reasonably selected according to the actual configuration and operating conditions of the network. In addition, the remaining parameters in the second-level configuration parameters are received through the physical layer downlink control information, so that the remaining parameters in the second-level configuration parameters are carried by the physical layer downlink control information, which has a faster information reception speed, thereby reducing Physical layer downlink control information overhead.

Step 1103: In the subframe where the uplink service is the main component, receive the first-level configuration parameters sent by the network-side device, and execute the DMRS function corresponding to the first-level configuration parameters.

The DMRS function corresponding to the first-level configuration parameter in the subframe where the uplink service is the main one includes at least one of the control channel demodulation function, the function of instructing the terminal to send the DMRS of the service channel, and the function of instructing the terminal to send the DMRS of the control channel. One item, the first-level configuration parameters include configuration parameters corresponding to at least one of the control channel demodulation function, the function of instructing the terminal to send DMRS of the traffic channel, and the function of instructing the terminal to send the DMRS of the control channel.

In addition, in the subframes in which the uplink service is dominant, the DMRS functions are different, and the specific contents included in the configuration parameters corresponding to the DMRS functions are different. Specifically, the configuration parameters corresponding to each DMRS function include at least one of an antenna port group identifier, a time-domain density, and a frequency-domain density. That is, the first-level configuration parameter includes at least one of an identifier of the first antenna port group, a first time-domain density, and a first frequency-domain density. Wherein, the identifier of the first antenna port group indicates the time-frequency resources occupied by the ports of the first antenna group; the first frequency domain density indicates the proportion of frequency domain subcarriers occupied by the first antenna port group in a partial bandwidth or full bandwidth or subband ; the first time-domain density indicates the proportion of time-domain symbols occupied by the first antenna port group in one transmission time interval.

Preferably, when the terminal receives the first-level configuration parameters, it specifically includes: receiving the network through at least one of a broadcast message, radio resource control signaling, a control unit of the media access layer, and an indication of a physical layer control message. The first-level configuration parameters sent by the side device. That is, the embodiments of the present invention provide multiple ways of receiving the first-level configuration parameters, so that the receiving mode of the first-level configuration parameters can be reasonably selected according to the actual configuration and operating conditions of the network.

Step 1104: In the subframe where the uplink service is the mainstay, receive the second-level configuration parameters sent by the network-side device, and execute the DMRS function corresponding to the second-level configuration parameters.

The DMRS function corresponding to the second-level configuration parameter in the subframe where the uplink service is dominant includes at least one of a control channel demodulation function, a function of instructing the terminal to send a DMRS of a service channel, and a function of instructing the terminal to send a DMRS of a control channel. One item, the second-level configuration parameters include configuration parameters corresponding to at least one of the control channel demodulation function, the function of instructing the terminal to send DMRS of the traffic channel, and the function of instructing the terminal to send the DMRS of the control channel.

In addition, in the subframes in which the uplink service is dominant, the DMRS functions are different, and the specific contents included in the configuration parameters corresponding to the DMRS functions are different. Specifically, the configuration parameters corresponding to each DMRS function include at least one of an antenna port group identifier, a time-domain density, and a frequency-domain density. That is, the second-level configuration parameter includes at least one of an identifier of the second antenna port group, a second time-domain density, and a second frequency-domain density. Wherein, the identifier of the second antenna port group indicates the time-frequency resources occupied by the ports of the second antenna group; the second frequency domain density indicates the proportion of frequency domain subcarriers occupied by the second antenna port group in a partial bandwidth or full bandwidth or subband ; the second time-domain density indicates the proportion of time-domain symbols occupied by the second antenna port group in one transmission time interval.

Preferably, when the terminal receives the second-level configuration parameters, it specifically includes: receiving the network through at least one of broadcast messages, radio resource control signaling, control units of the media access layer, and physical layer control message indications. second-level configuration parameters sent by the side device; or receive the first level sent by the network-side device through at least one of broadcast messages, radio resource control signaling, media access layer control units, and physical layer control message indications and part of the second-level configuration parameters, and receive the remaining parameters in the second-level configuration parameters sent by the network-side device through physical layer downlink control information.

The remaining parameters in the second-level configuration parameters refer to parameters in the second-level configuration parameters except for some parameters sent to the terminal together with the first-level configuration parameters. For example, when the second-level configuration parameters include an antenna port group identifier of 0, a time-domain density of 1, and a frequency-domain density of 1/6, if the antenna port group identifier is 0, this parameter is the same as the first-level configuration parameter. The parameters are sent to the terminal together through at least one of the broadcast message, the radio resource control signaling, the control unit of the media access layer, and the indication of the physical layer control message, and the remaining parameters in the second-level configuration parameters include the time domain. The density is 1 and the frequency domain density is 1/6.

As can be seen from the above, the embodiments of the present invention provide multiple ways of receiving the second-level configuration parameters, so that the method of receiving the second-level configuration parameters can be reasonably selected according to the actual configuration and operating conditions of the network. In addition, the remaining parameters in the second-level configuration parameters are received through the physical layer downlink control information, so that the remaining parameters in the second-level configuration parameters are carried by the physical layer downlink control information, which has a faster information reception speed, thereby reducing Physical layer downlink control information overhead.

To sum up, whether in a subframe dominated by downlink services or a subframe dominated by uplink services, as long as the terminal performs different DMRS functions, the applied antenna port groups may be different, and the applied network resources may be different. It may also be different, that is, the time-domain density and frequency-domain density corresponding to different DMRS functions are different. However, in the embodiment of the present invention, whether in a subframe dominated by downlink services or a subframe dominated by uplink services, the terminal can execute the corresponding time-frequency resource density dynamically configured by the network side device according to the actual DMRS function. DMRS function, instead of using a fixed pattern, thus saving the DMRS overhead, increasing the resources used for service transmission, and further improving the system spectrum efficiency.

Further, whether in a subframe dominated by downlink services or a subframe dominated by uplink services, the second antenna port group in the second-level configuration parameters is the first antenna port group in the first-level configuration parameters. subset of . That is, if the second antenna port group is selected from the first antenna port group, it is not necessary to re-detect other antenna ports other than the first port group, thereby reducing signaling overhead and further reducing DMRS overhead.

Further, whether in a subframe dominated by downlink services or a subframe dominated by uplink services, the first time-domain density in the first-level configuration parameters and the second time-domain density in the second-level configuration parameters There is an intersection. For example, both the first configuration level and the second configuration level include the control channel demodulation function, then the time domain density corresponding to the control channel demodulation function in the second level configuration parameter can be directly used in the first level configuration parameter and the control channel demodulation function. The time-domain density corresponding to the channel demodulation function further simplifies the process of the terminal performing the DMRS function, thereby further reducing the DMRS overhead.

Further, whether in a subframe dominated by downlink services or a subframe dominated by uplink services, the first frequency domain density in the first-level configuration parameters and the second frequency-domain density in the second-level configuration parameters There is an intersection. For example, both the first configuration level and the second configuration level include the control channel demodulation function, then the frequency domain density corresponding to the control channel demodulation function in the second level configuration parameter can be directly used in the first level configuration parameter and the control channel demodulation function. The frequency domain density corresponding to the channel demodulation function further simplifies the process of the terminal performing the DMRS function, thereby further reducing the DMRS overhead.

Therefore, as can be seen from the above, whether in a subframe dominated by downlink services or a subframe dominated by uplink services, the parameters corresponding to a certain DMRS function in the first-level configuration parameters can be multiplexed into the second-level configuration In the parameters corresponding to this DMRS function.

To sum up, in the embodiment of the present invention, the terminal receives the first-level configuration parameters and the second-level configuration parameters sent by the network side device in the subframes that mainly use downlink services and the subframes that mainly use uplink services. Configure parameters, and perform DMRS functions corresponding to the respective configuration parameters. Among them, since the configuration parameters are dynamically configured by the network side equipment according to different functional requirements of the DMRS, the terminal can use the resources determined by the configuration parameters to perform the corresponding DMRS function, thereby reducing the DMRS overhead and effectively solving the problem of the large DMRS overhead in the 5G system. The problem of low spectral efficiency of the system and the inability to accurately estimate the channel characteristics, thereby improving the transmission effectiveness and reliability, and improving the average transmission rate of the cell and the transmission rate of edge users.

Fifth Embodiment

An embodiment of the present invention provides a network side device, and the network device may be a base station, an evolved node, a transceiver node, etc., but is not limited to these devices.

As shown in FIG. 12 , the network side device 120 includes:

a level configuration module 121, configured to divide at least one DMRS function that the terminal needs to perform into at least one configuration level;

A parameter configuration module 122, configured to determine the configuration parameters of the DMRS function included in each of the configuration levels, and send the configuration parameters to the terminal, where the configuration parameters are used by the terminal to receive the configuration After setting the parameters, the DMRS function is performed according to the configuration parameters.

Preferably, the configuration level includes a first configuration level and a second configuration level; as shown in FIG. 13 , the parameter configuration module 122 includes:

The first configuration unit 1221 is configured to determine, in a subframe where downlink traffic is dominant, the first-level configuration parameters of the DMRS function included in the first configuration level, and send the first-level configuration parameters to the The terminal; wherein, in the subframe where the downlink service is the main, the DMRS functions in the first configuration level include: control channel demodulation function, traffic channel demodulation function, radio resource management RRM measurement function and phase noise estimation function. at least one.

Preferably, as shown in FIG. 13 , the parameter configuration module 122 further includes:

The second configuration unit 1222 is configured to determine, in the subframe where the downlink service is dominant, the second-level configuration parameters of the DMRS function included in the second configuration level, and send the second-level configuration parameters to the The terminal; wherein, in the subframe where the downlink service is dominant, the DMRS function in the second configuration level includes: at least one of a control channel demodulation function, a traffic channel demodulation function, an RRM measurement function and a phase noise estimation function .

Preferably, the configuration level includes a first configuration level and a second configuration level; as shown in FIG. 13 , the parameter configuration module 122 includes:

The third configuration unit 1223 is configured to determine, in the subframe where the uplink service is dominant, the first-level configuration parameters of the DMRS function included in the first configuration level, and send the first-level configuration parameters to the The terminal; wherein, in the subframe where the uplink service is dominant, the DMRS function in the first configuration level includes: at least one of a control channel demodulation function, a function of instructing the terminal to send a DMRS of a service channel, and a function of instructing the terminal to send a DMRS of a control channel item.

Preferably, the parameter configuration module 122 further includes:

The fourth configuration unit 1224 is configured to, in the subframe where the uplink service is dominant, determine the second-level configuration parameters of the DMRS function included in the second configuration level, and send the second-level configuration parameters to the The terminal; wherein, in the subframe where the uplink service is dominant, the DMRS function in the second configuration level includes: at least one of a control channel demodulation function, a function of instructing the terminal to send a DMRS of a service channel, and a function of instructing the terminal to send a DMRS of a control channel item.

Preferably, the first-level configuration parameters include at least one of an identifier of the first antenna port group, a first time-domain density, and a first frequency-domain density; the second-level configuration parameters include At least one of an identity, a second time-domain density, and a second frequency-domain density.

Advantageously, the second antenna port group is a subset of the first antenna port group.

Preferably, the first temporal density and the second temporal density have an intersection.

Preferably, the first frequency domain density and the second frequency domain density have an intersection.

Preferably, when the first configuration unit 1221 sends the first-level configuration parameters to the terminal, it is specifically configured to: use broadcast messages, radio resource control signaling, the control unit of the media access layer and the physical layer At least one of the control message indications is to send the first-level configuration parameters to the terminal.

Preferably, when the third configuration unit 1223 sends the first-level configuration parameters to the terminal, it is specifically configured to: use broadcast messages, radio resource control signaling, control units of the media access layer, and physical layers At least one of the control message indications is to send the first-level configuration parameters to the terminal.

Preferably, when the second configuration unit 1222 sends the second-level configuration parameters to the terminal, it is specifically configured to: use broadcast messages, radio resource control signaling, the control unit of the media access layer, and the physical layer at least one of the control message indications, sending the second-level configuration parameters to the terminal; or through at least one of broadcast messages, radio resource control signaling, media access layer control elements, and physical layer control message indications Item 1: Send some parameters in the second-level configuration parameters to the terminal together with the first-level configuration parameters, and send the remaining parameters in the second-level configuration parameters through physical layer downlink control information to the terminal. The remaining parameters in the second-level configuration parameters refer to parameters in the second-level configuration parameters except for some parameters sent to the terminal together with the first-level configuration parameters.

Preferably, when the fourth configuration unit 1224 sends the second-level configuration parameters to the terminal, it is specifically configured to: use broadcast messages, radio resource control signaling, the control unit of the media access layer, and the physical layer at least one of the control message indications, sending the second-level configuration parameters to the terminal; or through at least one of broadcast messages, radio resource control signaling, media access layer control elements, and physical layer control message indications Item 1: Send some parameters in the second-level configuration parameters to the terminal together with the first-level configuration parameters, and send the remaining parameters in the second-level configuration parameters through physical layer downlink control information to the terminal. The remaining parameters in the second-level configuration parameters refer to parameters in the second-level configuration parameters except for some parameters sent to the terminal together with the first-level configuration parameters.

It can be seen from the above that the network side device 120 in this embodiment of the present invention divides at least one DMRS function that the terminal needs to perform into at least one configuration level through the level configuration module 121, thereby triggering the parameter configuration module 122 to determine the parameters included in each configuration level. The configuration parameters of the DMRS function, so that the determined configuration parameters are sent to the terminal, so that the terminal can execute the corresponding DMRS function according to the configuration parameters after receiving the configuration parameters. It can be seen from this that the network-side device in the embodiment of the present invention can dynamically configure parameter data corresponding to each DMRS function for the terminal according to different functional requirements of the DMRS and according to the configuration level of each DMRS function, thereby reducing the DMRS overhead and effectively solving the problem of 5G In the system, the DMRS overhead is large, the system spectral efficiency is low, and the channel characteristics cannot be accurately estimated, thereby improving the transmission effectiveness and reliability, and improving the average transmission rate of the cell and the transmission rate of edge users.

Sixth Embodiment

Embodiments of the present invention provide a terminal, wherein the terminal may be a mobile phone, a tablet computer, a personal digital assistant (Personal Digital Assistant, PDA), or a vehicle-mounted computer, etc., but is not limited to these devices. As shown in Figure 14, the terminal 140 includes:

A function execution module 141, configured to receive a configuration parameter sent by a network side device, and execute a DMRS function corresponding to the configuration parameter according to the configuration parameter; wherein the configuration parameter includes configuration parameters of at least one configuration level, and The configuration parameters of each of the configuration levels correspond to at least one DMRS function.

Preferably, the configuration level includes a first configuration level and a second configuration level; as shown in FIG. 15 , the function execution module 141 includes: a first execution unit 1411 for, in a subframe dominated by downlink services, Receive the first-level configuration parameters sent by the network-side device, and execute the DMRS function corresponding to the first-level configuration parameters; wherein, in the subframe where the downlink service is mainly used, the subframes corresponding to the first-level configuration parameters The DMRS function includes at least one of a control channel demodulation function, a traffic channel demodulation function, a radio resource management RRM measurement function and a phase noise estimation function.

Preferably, as shown in FIG. 15 , the function execution module 141 further includes: a second execution unit 1412, configured to receive the second-level configuration parameters sent by the network-side device in the subframe where the downlink service is dominant, And execute the DMRS function corresponding to the second-level configuration parameters; wherein, in the subframe where the downlink service is the main, the DMRS functions corresponding to the second-level configuration parameters include: control channel demodulation function, traffic channel demodulation function at least one of a tuning function, a radio resource management RRM measurement function, and a phase noise estimation function.

Preferably, the configuration levels include a first configuration level and a second configuration level; as shown in FIG. 15 , the function execution module 141 includes: a third execution unit 1413, configured to perform Receive the first-level configuration parameters sent by the network-side device, and execute the DMRS function corresponding to the first-level configuration parameters; wherein, in the subframe where the uplink service is the main, the configuration parameters corresponding to the first-level configuration parameters The corresponding DMRS function includes at least one of a control channel demodulation function, a function of instructing the terminal to send a DMRS of a traffic channel, and a function of instructing the terminal to send a DMRS of a control channel.

Preferably, as shown in FIG. 15 , the function execution module 141 further includes: a fourth execution unit 1414, configured to receive the second-level configuration parameters sent by the network-side device in the subframe where the uplink service is the mainstay, And execute the DMRS function corresponding to the second-level configuration parameters; wherein, in the subframe where the uplink service is the main, the DMRS functions corresponding to the second-level configuration parameters include: control channel demodulation function, indicating terminal At least one of the function of transmitting the DMRS of the traffic channel and the function of instructing the terminal to transmit the DMRS of the control channel.

Preferably, the first-level configuration parameters include at least one of an identifier of the first antenna port group, a first time-domain density, and a first frequency-domain density; the second-level configuration parameters include At least one of an identity, a second time-domain density, and a second frequency-domain density.

Advantageously, the second antenna port group is a subset of the first antenna port group.

Preferably, the first temporal density and the second temporal density have an intersection.

Preferably, the first frequency domain density and the second frequency domain density have an intersection.

Preferably, when the first execution unit 1411 receives the first-level configuration parameters sent by the network-side device, it is specifically configured to: use broadcast messages, radio resource control signaling, the control unit of the media access layer, and the physical layer At least one of the control message indications is to receive the first-level configuration parameters sent by the network-side device.

Preferably, when the third execution unit 1413 receives the first-level configuration parameters sent by the network-side device, it is specifically configured to: use broadcast messages, radio resource control signaling, control units of the media access layer, and physical layers At least one of the control message indications is to receive the first-level configuration parameters sent by the network-side device.

Preferably, when the second execution unit 1412 receives the second-level configuration parameters sent by the network-side device, it is specifically configured to: use a broadcast message, radio resource control signaling, a control unit of the media access layer, and a physical layer At least one of the control message indications, receiving the second-level configuration parameters sent by the network side device; or through at least one of broadcast messages, radio resource control signaling, media access layer control units, and physical layer control message indications Item: Receive the first-level configuration parameters and part of the second-level configuration parameters sent by the network-side device, and receive the second-level configuration parameters sent by the network-side device through physical layer downlink control information. the remaining parameters. The remaining parameters in the second-level configuration parameters refer to parameters in the second-level configuration parameters except for some parameters sent to the terminal together with the first-level configuration parameters.

Preferably, when the fourth execution unit 1414 receives the second-level configuration parameters sent by the network-side device, it is specifically configured to: use broadcast messages, radio resource control signaling, the control unit of the media access layer, and the physical layer At least one of the control message indications, receiving the second-level configuration parameters sent by the network side device; or through at least one of broadcast messages, radio resource control signaling, media access layer control units, and physical layer control message indications Item: Receive the first-level configuration parameters and part of the second-level configuration parameters sent by the network-side device, and receive the second-level configuration parameters sent by the network-side device through physical layer downlink control information. the remaining parameters. The remaining parameters in the second-level configuration parameters refer to parameters in the second-level configuration parameters except for some parameters sent to the terminal together with the first-level configuration parameters.

It can be seen from the above that the terminal 140 in this embodiment of the present invention receives the configuration parameters sent by the network side device through the function execution module 141, and executes the DMRS function corresponding to the configuration parameters according to the configuration parameters. Among them, since the configuration parameters are dynamically configured by the network side equipment according to different functional requirements of the DMRS, the terminal can use the resources determined by the configuration parameters to perform the corresponding DMRS function, thereby reducing the DMRS overhead and effectively solving the problem of the large DMRS overhead in the 5G system. The problem of low spectral efficiency of the system and the inability to accurately estimate the channel characteristics, thereby improving the transmission effectiveness and reliability, and improving the average transmission rate of the cell and the transmission rate of edge users.

Seventh Embodiment

FIG. 16 is a block diagram of a terminal according to another embodiment of the present invention. Specifically, the terminal 1600 in FIG. 16 may be a mobile phone, a tablet computer, a personal digital assistant (Personal Digital Assistant, PDA), or a vehicle-mounted computer.

The terminal 1600 shown in FIG. 16 includes: at least one processor 1601 , memory 1602 , at least one network interface 1604 , and other user interfaces 1603 . The various components in terminal 1600 are coupled together by bus system 1605 . It will be appreciated that the bus system 1605 is used to implement connection communication between these components. In addition to the data bus, the bus system 1605 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, the various buses are labeled as bus system 1605 in FIG. 16 .

Among them, the user interface 1603 may include a display, a keyboard or a pointing device. For example, a mouse, trackball, touch pad or touch screen, etc.

It can be understood that the memory 1602 in the embodiment of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Wherein, the non-volatile memory may be Read-Only Memory (ROM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (Erasable PROM, EPROM), Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double DataRate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synchlink DRAM, SLDRAM) and Direct memory bus random access memory (Direct Rambus RAM, DRRAM). The memory 1602 of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

In some embodiments, memory 1602 stores the following elements, executable modules or data structures, or subsets thereof, or extended sets of them: operating system 16021 and applications 16022.

The operating system 16021 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks. The application program 16022 includes various application programs, such as a media player (Media Player), a browser (Browser), etc., for implementing various application services. A program for implementing the method of the embodiment of the present invention may be included in the application program 16022 .

In this embodiment of the present invention, by calling the program or instruction stored in the memory 1602 , specifically, the program or instruction stored in the application program 16022 may be used. The processor 1601 receives the configuration parameters sent by the network side device, and executes the DMRS function corresponding to the configuration parameters according to the configuration parameters; wherein, the configuration parameters include configuration parameters of at least one configuration level, and each The configuration parameters of the configuration level correspond to at least one DMRS function.

The methods disclosed in the above embodiments of the present invention may be applied to the processor 1601 or implemented by the processor 1601 . The processor 1601 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above-mentioned method can be completed by an integrated logic circuit of hardware in the processor 1601 or an instruction in the form of software. The above-mentioned processor 1601 may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logical block diagrams disclosed in the embodiments of the present invention can be implemented or executed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present invention may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory 1602, and the processor 1601 reads the information in the memory 1602, and completes the steps of the above method in combination with its hardware.

It will be appreciated that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit may be implemented in one or more Application Specific Integrated Circuits (ASIC), Digital Signal Processing (DSP), Digital Signal Processing Device (DSP Device, DSPD), programmable logic Devices (Programmable Logic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described in this application or a combination thereof.

For a software implementation, the techniques described herein may be implemented through modules (eg, procedures, functions, etc.) that perform the functions described herein. Software codes may be stored in memory and executed by a processor. The memory can be implemented in the processor or external to the processor.

Preferably, the configuration level includes a first configuration level and a second configuration level; when the processor 1601 receives the configuration parameters sent by the network-side device, and executes the DMRS function corresponding to the configuration parameters according to the configuration parameters, the specific It is used for: in the subframe where the downlink service is dominant, receive the first-level configuration parameter sent by the network side device, and execute the DMRS function corresponding to the first-level configuration parameter; wherein, the subframe where the downlink service is dominant In the frame, the DMRS function corresponding to the first-level configuration parameter includes at least one of a control channel demodulation function, a traffic channel demodulation function, a radio resource management RRM measurement function and a phase noise estimation function.

Preferably, when the processor 1601 receives the configuration parameters sent by the network-side device, and executes the DMRS function corresponding to the configuration parameters according to the configuration parameters, the processor 1601 is further configured to: receive the The second-level configuration parameters sent by the network side device, and perform the DMRS function corresponding to the second-level configuration parameters; wherein, in the subframe where the downlink service is the main, the DMRS function corresponding to the second-level configuration parameters It includes at least one of a control channel demodulation function, a traffic channel demodulation function, a radio resource management RRM measurement function and a phase noise estimation function.

Preferably, the configuration levels include a first configuration level and a second configuration level; when the processor 1601 receives the configuration parameters sent by the network-side device, and executes the DMRS function corresponding to the configuration parameters according to the configuration parameters, use In: receiving the first-level configuration parameters sent by the network-side device in the subframe where the uplink service is the mainstay, and executing the DMRS function corresponding to the first-level configuration parameter; wherein, the subframe where the uplink service is the mainstay The DMRS function corresponding to the first-level configuration parameter includes at least one of a control channel demodulation function, a function of instructing the terminal to send a DMRS of a traffic channel, and a function of instructing the terminal to send a DMRS of a control channel.

Preferably, when the processor 1601 receives the configuration parameters sent by the network side device, and executes the DMRS function corresponding to the configuration parameters according to the configuration parameters, the processor 1601 is further configured to: receive the The second-level configuration parameters sent by the network side device, and perform the DMRS function corresponding to the second-level configuration parameters; wherein, in the subframe where the uplink service is the main, the DMRS corresponding to the second-level configuration parameters The functions include at least one of a control channel demodulation function, a function of instructing the terminal to send a DMRS of a traffic channel, and a function of instructing the terminal to send a DMRS of a control channel.

Preferably, the first-level configuration parameters include at least one of an identifier of the first antenna port group, a first time-domain density, and a first frequency-domain density; the second-level configuration parameters include At least one of an identity, a second time-domain density, and a second frequency-domain density.

Advantageously, the second antenna port group is a subset of the first antenna port group.

Preferably, the first temporal density and the second temporal density have an intersection.

Preferably, the first frequency domain density and the second frequency domain density have an intersection.

Preferably, when the processor 1601 receives the first-level configuration parameters sent by the network-side device, it is specifically used to: indicate through broadcast messages, radio resource control signaling, media access layer control units, and physical layer control messages. At least one of the first-level configuration parameters sent by the network-side device is received.

Preferably, when the processor 1601 receives the second-level configuration parameters sent by the network-side device, it is specifically used to: indicate through broadcast messages, radio resource control signaling, media access layer control units, and physical layer control messages. Receive at least one of the second-level configuration parameters sent by the network-side device; or receive at least one of broadcast messages, radio resource control signaling, media access layer control units, and physical layer control message indications, receive The first-level configuration parameters and part of the second-level configuration parameters sent by the network-side device, and the remaining parameters in the second-level configuration parameters sent by the network-side device are received through physical layer downlink control information.

The terminal 1600 can implement each process implemented by the terminal in the foregoing embodiments, and to avoid repetition, details are not repeated here.

The terminal 1600 in this embodiment of the present invention can receive a configuration parameter sent by a network-side device, and execute a DMRS function corresponding to the configuration parameter according to the configuration parameter. Among them, since the configuration parameters are dynamically configured by the network side equipment according to different functional requirements of the DMRS, the terminal 1600 can use the resources determined by the configuration parameters to perform the corresponding DMRS function, thereby reducing the DMRS overhead and effectively solving the problem of the large DMRS overhead in the 5G system. , the low spectral efficiency of the system and the inability to accurately estimate the channel characteristics, thereby improving the transmission effectiveness and reliability, and improving the average transmission rate of the cell and the transmission rate of edge users.

Eighth Embodiment

Please refer to FIG. 17 . FIG. 17 is a structural diagram of a network side device applied in an embodiment of the present invention, which can implement the details of the data transmission methods in the first embodiment to the second embodiment, and achieve the same effect. Wherein, the network device may be a base station, an evolved node, a transceiver node, etc., but is not limited to these devices. As shown in FIG. 17, the network side device 1700 includes: a processor 1701, a transceiver 1702, a memory 1703, a user interface 1704 and a bus interface, wherein:

The processor 1701 is used to read the program in the memory 1703, and execute the following processes:

dividing at least one DMRS function that the terminal needs to perform into at least one configuration level;

Determine the configuration parameters of the DMRS function included in each of the configuration levels, and then control the transceiver 1702 to send the configuration parameters to the terminal, where the configuration parameters are used by the terminal after receiving the configuration parameters, The DMRS function is performed according to the configuration parameters.

In FIG. 17, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1701 and various circuits of memory represented by memory 1703 linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 1702 may be a number of elements, including a transmitter and a receiver, that provide a means for communicating with various other devices over a transmission medium. For different user equipments, the user interface 1704 may also be an interface capable of externally connecting the required equipment, and the connected equipment includes but is not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 1701 is responsible for managing the bus architecture and general processing, and the memory 1703 may store data used by the processor 1701 in performing operations.

Preferably, the configuration levels include a first configuration level and a second configuration level, and the processor 1701 determines the configuration parameters of the DMRS function included in each of the configuration levels, and sends the configuration parameters to the When the terminal is used, it is specifically used for: determining the first-level configuration parameters of the DMRS function included in the first configuration level, and sending the first-level configuration parameters to the terminal in the subframe where the downlink service is the mainstay; Wherein, in the subframe where the downlink service is dominant, the DMRS function in the first configuration level includes: at least one of a control channel demodulation function, a traffic channel demodulation function, a radio resource management RRM measurement function, and a phase noise estimation function item.

Preferably, when the processor 1701 determines the configuration parameters of the DMRS function included in each of the configuration levels, and sends the configuration parameters to the terminal, the processor 1701 is also used for: in the subframe where the downlink service is dominant , determine the second-level configuration parameters of the DMRS function included in the second configuration level, and send the second-level configuration parameters to the terminal; The DMRS functions in the configuration level include at least one of a control channel demodulation function, a traffic channel demodulation function, an RRM measurement function, and a phase noise estimation function.

Preferably, the configuration levels include a first configuration level and a second configuration level, and the processor 1701 determines the configuration parameters of the DMRS function included in each of the configuration levels, and sends the configuration parameters to the When the terminal is used, it is specifically used for: determining the first-level configuration parameters of the DMRS function included in the first configuration level in the subframe where the uplink service is the mainstay, and sending the first-level configuration parameters to the terminal; The DMRS function in the first configuration level includes at least one of a control channel demodulation function, a function of instructing the terminal to send a DMRS of a service channel, and a function of instructing the terminal to send a DMRS of a control channel.

Preferably, when the processor 1701 determines the configuration parameters of the DMRS function included in each of the configuration levels, and sends the configuration parameters to the terminal, the processor 1701 is further used for: in the subframe where the uplink service is the mainstay , determine the second-level configuration parameters of the DMRS function included in the second configuration level, and send the second-level configuration parameters to the terminal; The DMRS function in the configuration level includes at least one of a control channel demodulation function, a function of instructing the terminal to send a traffic channel DMRS, and a function of instructing the terminal to send a control channel DMRS.

Preferably, the first-level configuration parameters include at least one of an identifier of the first antenna port group, a first time-domain density, and a first frequency-domain density; the second-level configuration parameters include At least one of an identity, a second time-domain density, and a second frequency-domain density.

Advantageously, the second antenna port group is a subset of the first antenna port group.

Preferably, the first temporal density and the second temporal density have an intersection.

Preferably, the first frequency domain density and the second frequency domain density have an intersection.

Preferably, when the transceiver 1702 sends the first-level configuration parameters to the terminal, it is specifically used for: through broadcast messages, radio resource control signaling, media access layer control units, and physical layer control message indications. In at least one item, the first-level configuration parameters are sent to the terminal.

Preferably, when the transceiver 1702 sends the second-level configuration parameters to the terminal, it is specifically used for: through broadcast messages, radio resource control signaling, control elements of the media access layer, and physical layer control message indications. At least one, send the second-level configuration parameters to the terminal; or send the all Some parameters in the second-level configuration parameters are sent to the terminal together with the first-level configuration parameters, and the remaining parameters in the second-level configuration parameters are sent to the terminal through physical layer downlink control information.

In this way, the network-side device 1700 sends the determined configuration parameters to the terminal by dividing at least one DMRS function that the terminal needs to perform into at least one configuration level, and determining the configuration parameters of the DMRS function included in each configuration level , so that the terminal can execute the corresponding DMRS function according to the configuration parameter after receiving the configuration parameter. It can be seen that the embodiments of the present invention can dynamically configure the parameter data corresponding to each DMRS function for the terminal according to the different functional requirements of the DMRS and the configuration level of each DMRS function, thereby reducing the DMRS overhead and effectively solving the problem of DMRS in the 5G system. The problems of high overhead, low system spectral efficiency, and inability to accurately estimate channel characteristics, thereby improving transmission effectiveness and reliability, and increasing the average cell transmission rate and edge user transmission rate.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of the present invention.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the effect of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk and other mediums that can store program codes.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. should be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (48)

1. A demodulation reference signal DMRS parameter configuration method, applied to a network side device, wherein the method comprises: dividing at least one DMRS function that the terminal needs to perform into at least one configuration level; Determine the configuration parameters of the DMRS function included in each of the configuration levels, and send the configuration parameters to the terminal, where the configuration parameters are used by the terminal after receiving the configuration parameters, according to the configuration parameters to perform the DMRS function; Wherein, in a subframe dominated by the following downlink services, the DMRS functions included in each of the configuration levels include: a control channel demodulation function, a traffic channel demodulation function, a radio resource management RRM measurement function, and a phase noise estimation function. at least one of; In a subframe dominated by uplink services, the DMRS functions included in each of the configuration levels include: at least one of a control channel demodulation function, a function of instructing the terminal to send a DMRS of a traffic channel, and a function of instructing the terminal to send a DMRS of a control channel ; The configuration parameters corresponding to the DMRS function include: at least one of an antenna port group identifier, a time-domain density, and a frequency-domain density; The antenna port group identifier indicates the time-frequency resources occupied by a group of antenna ports; the time-domain density indicates the proportion of time-domain symbols occupied by a certain antenna port group in a transmission time interval; the frequency-domain density indicates a certain The proportion of frequency domain subcarriers occupied by an antenna port group in a partial bandwidth or full bandwidth or subband. 2. The method according to claim 1, wherein the configuration level comprises a first configuration level and a second configuration level; The step of determining the configuration parameters of the DMRS function included in each of the configuration levels, and sending the configuration parameters to the terminal, includes: In the subframe where the downlink service is dominant, determine the first-level configuration parameters of the DMRS function included in the first configuration level, and send the first-level configuration parameters to the terminal; Wherein, in the subframe where the downlink service is dominant, the DMRS function in the first configuration level includes: at least one of a control channel demodulation function, a traffic channel demodulation function, a radio resource management RRM measurement function, and a phase noise estimation function item. 3. The method according to claim 2, wherein the step of determining the configuration parameters of the DMRS function included in each of the configuration levels, and sending the configuration parameters to the terminal, further include: In the subframe where the downlink service is dominant, determine the second-level configuration parameters of the DMRS function included in the second configuration level, and send the second-level configuration parameters to the terminal; Wherein, in the subframe where the downlink service is dominant, the DMRS function in the second configuration level includes at least one of a control channel demodulation function, a traffic channel demodulation function, an RRM measurement function and a phase noise estimation function. 4. The method of claim 1, wherein the configuration levels comprise a first configuration level and a second configuration level; The step of determining the configuration parameters of the DMRS function included in each of the configuration levels, and sending the configuration parameters to the terminal, includes: In the subframe where the uplink service is dominant, determine the first-level configuration parameters of the DMRS function included in the first configuration level, and send the first-level configuration parameters to the terminal; The DMRS function in the first configuration level includes at least one of a control channel demodulation function, a function of instructing the terminal to send a DMRS of a service channel, and a function of instructing the terminal to send a DMRS of a control channel. 5. The method according to claim 4, wherein the step of determining the configuration parameters of the DMRS function included in each of the configuration levels, and sending the configuration parameters to the terminal, further include: In the subframe where the uplink service is dominant, determine the second-level configuration parameters of the DMRS function included in the second configuration level, and send the second-level configuration parameters to the terminal; The DMRS function in the second configuration level includes at least one of a control channel demodulation function, a function of instructing the terminal to send a DMRS of a service channel, and a function of instructing the terminal to send a DMRS of a control channel. 6. The method according to claim 3 or 5, characterized in that, The first-level configuration parameter includes at least one of an identifier of the first antenna port group, a first time-domain density, and a first frequency-domain density; The second-level configuration parameters include at least one of an identification of the second antenna port group, a second time-domain density, and a second frequency-domain density. 7. The method of claim 6, wherein the second antenna port group is a subset of the first antenna port group. 8. The method of claim 6, wherein the first temporal density and the second temporal density have an intersection. 9 . The method according to claim 6 , wherein the first frequency domain density and the second frequency domain density have an intersection. 10 . 10. The method according to claim 2 or 4, wherein the step of sending the first-level configuration parameters to the terminal comprises: The first-level configuration parameters are sent to the terminal through at least one of broadcast messages, radio resource control signaling, media access layer control elements, and physical layer control message indications. 11. The method according to claim 3 or 5, wherein the step of sending the second-level configuration parameters to the terminal comprises: Send the second-level configuration parameter to the terminal through at least one of a broadcast message, radio resource control signaling, a control element of the media access layer, and a physical layer control message indication; or Part of the parameters in the second-level configuration parameters are combined with the first-level configuration parameters through at least one of broadcast messages, radio resource control signaling, media access layer control elements, and physical layer control message indications send to the terminal, and send the remaining parameters in the second-level configuration parameters to the terminal through the physical layer downlink control information. 12. A demodulation reference signal DMRS parameter configuration method, applied to a terminal, characterized in that, comprising: receiving a configuration parameter sent by the network side device, and executing a DMRS function corresponding to the configuration parameter according to the configuration parameter; Wherein, the configuration parameters include configuration parameters of at least one configuration level, and the configuration parameters of each of the configuration levels correspond to at least one DMRS function; Wherein, in a subframe dominated by the following downlink services, the DMRS functions included in each of the configuration levels include: a control channel demodulation function, a traffic channel demodulation function, a radio resource management RRM measurement function, and a phase noise estimation function. at least one of; In a subframe dominated by uplink services, the DMRS functions included in each of the configuration levels include: at least one of a control channel demodulation function, a function of instructing the terminal to send a DMRS of a traffic channel, and a function of instructing the terminal to send a DMRS of a control channel ; The configuration parameters corresponding to the DMRS function include: at least one of an antenna port group identifier, a time-domain density, and a frequency-domain density; The antenna port group identifier indicates the time-frequency resources occupied by a group of antenna ports; the time-domain density indicates the proportion of time-domain symbols occupied by a certain antenna port group in a transmission time interval; the frequency-domain density indicates a certain The proportion of frequency domain subcarriers occupied by an antenna port group in a partial bandwidth or full bandwidth or subband. 13. The method of claim 12, wherein the configuration levels include a first configuration level and a second configuration level; The step of receiving the configuration parameters sent by the network side device, and executing the DMRS function corresponding to the configuration parameters according to the configuration parameters, includes: In the subframe where the downlink service is the mainstay, receive the first-level configuration parameters sent by the network-side device, and execute the DMRS function corresponding to the first-level configuration parameters; The DMRS functions corresponding to the first-level configuration parameters in the subframes where the downlink service is dominant include: a control channel demodulation function, a traffic channel demodulation function, a radio resource management RRM measurement function, and a phase noise estimation function. at least one. 14. The method according to claim 13, wherein the step of receiving a configuration parameter sent by a network side device, and performing a DMRS function corresponding to the configuration parameter according to the configuration parameter, further comprises: In the subframe where the downlink service is the mainstay, receive the second-level configuration parameters sent by the network side device, and execute the DMRS function corresponding to the second-level configuration parameters; The DMRS function corresponding to the second-level configuration parameter in the subframe with the main downlink service includes: at least one of a control channel demodulation function, a traffic channel demodulation function, an RRM measurement function and a phase noise estimation function . 15. The method of claim 12, wherein the configuration levels include a first configuration level and a second configuration level; The step of receiving the configuration parameters sent by the network side device, and executing the DMRS function corresponding to the configuration parameters according to the configuration parameters, includes: In the subframe where the uplink service is the mainstay, receive the first-level configuration parameters sent by the network-side device, and execute the DMRS function corresponding to the first-level configuration parameters; The DMRS function corresponding to the first-level configuration parameter in the subframe where the uplink service is the main one includes at least one of the control channel demodulation function, the function of instructing the terminal to send the DMRS of the service channel, and the function of instructing the terminal to send the DMRS of the control channel. one. 16. The method according to claim 15, wherein the step of receiving a configuration parameter sent by a network-side device, and executing a DMRS function corresponding to the configuration parameter according to the configuration parameter, further comprises: In the subframe where the uplink service is the mainstay, receive the second-level configuration parameter sent by the network side device, and execute the DMRS function corresponding to the second-level configuration parameter; The DMRS function corresponding to the second-level configuration parameter in the subframe where the uplink service is dominant includes at least one of a control channel demodulation function, a function of instructing the terminal to send a DMRS of a service channel, and a function of instructing the terminal to send a DMRS of a control channel. one. 17. The method according to claim 14 or 16, characterized in that, The first-level configuration parameter includes at least one of an identifier of the first antenna port group, a first time-domain density, and a first frequency-domain density; The second-level configuration parameters include at least one of an identification of the second antenna port group, a second time-domain density, and a second frequency-domain density. 18. The method of claim 17, wherein the second antenna port group is a subset of the first antenna port group. 19. The method of claim 17, wherein the first temporal density and the second temporal density have an intersection. 20. The method of claim 17, wherein the first frequency domain density and the second frequency domain density have an intersection. 21. The method according to claim 13 or 15, wherein the step of receiving the first-level configuration parameters sent by the network-side device comprises: The first-level configuration parameters sent by the network-side device are received through at least one of broadcast messages, radio resource control signaling, media access layer control units, and physical layer control message indications. 22. The method according to claim 14 or 16, wherein the step of receiving the second-level configuration parameters sent by the network-side device comprises: Receive the second-level configuration parameters sent by the network-side device through at least one of a broadcast message, radio resource control signaling, a media access layer control unit, and a physical layer control message indication; or Receive the first-level configuration parameters and part of the second-level configuration sent by the network-side device through at least one of broadcast messages, radio resource control signaling, media access layer control units, and physical layer control message indications parameters, and receive the remaining parameters in the second-level configuration parameters sent by the network-side device through the physical layer downlink control information. 23. A network side device, comprising: a level configuration module, configured to divide at least one DMRS function that the terminal needs to perform into at least one configuration level; A parameter configuration module, configured to determine the configuration parameters of the DMRS function included in each of the configuration levels, and send the configuration parameters to the terminal, where the configuration parameters are used by the terminal to receive the configuration parameters Then, execute the DMRS function according to the configuration parameter; Wherein, in a subframe dominated by the following downlink services, the DMRS functions included in each of the configuration levels include: a control channel demodulation function, a traffic channel demodulation function, a radio resource management RRM measurement function, and a phase noise estimation function. at least one of; In a subframe dominated by uplink services, the DMRS functions included in each of the configuration levels include: at least one of a control channel demodulation function, a function of instructing the terminal to send a DMRS of a traffic channel, and a function of instructing the terminal to send a DMRS of a control channel ; The configuration parameters corresponding to the DMRS function include: at least one of an antenna port group identifier, a time-domain density, and a frequency-domain density; The antenna port group identifier indicates the time-frequency resources occupied by a group of antenna ports; the time-domain density indicates the proportion of time-domain symbols occupied by a certain antenna port group in a transmission time interval; the frequency-domain density indicates a certain The proportion of frequency domain subcarriers occupied by an antenna port group in a partial bandwidth or full bandwidth or subband. 24. The network side device according to claim 23, wherein the configuration level comprises a first configuration level and a second configuration level; The parameter configuration module includes: a first configuration unit, configured to determine the first-level configuration parameters of the DMRS function included in the first configuration level in the subframe where the downlink service is dominant, and send the first-level configuration parameters to the terminal ; Wherein, in the subframe where the downlink service is dominant, the DMRS function in the first configuration level includes: at least one of a control channel demodulation function, a traffic channel demodulation function, a radio resource management RRM measurement function, and a phase noise estimation function item. 25. The network side device according to claim 24, wherein the parameter configuration module further comprises: A second configuration unit, configured to determine, in a subframe where downlink services are dominant, the second-level configuration parameters of the DMRS function included in the second configuration level, and send the second-level configuration parameters to the terminal ; Wherein, in the subframe where the downlink service is dominant, the DMRS function in the second configuration level includes at least one of a control channel demodulation function, a traffic channel demodulation function, an RRM measurement function and a phase noise estimation function. 26. The network side device according to claim 23, wherein the configuration level comprises a first configuration level and a second configuration level; The parameter configuration module includes: A third configuration unit, configured to determine, in the subframe where the uplink service is dominant, the first-level configuration parameters of the DMRS function included in the first configuration level, and send the first-level configuration parameters to the terminal ; The DMRS function in the first configuration level includes at least one of a control channel demodulation function, a function of instructing the terminal to send a DMRS of a service channel, and a function of instructing the terminal to send a DMRS of a control channel. 27. The network side device according to claim 26, wherein the parameter configuration module further comprises: a fourth configuration unit, configured to determine the second-level configuration parameters of the DMRS function included in the second configuration level in the subframe where the uplink service is the mainstay, and send the second-level configuration parameters to the terminal ; The DMRS function in the second configuration level includes at least one of a control channel demodulation function, a function of instructing the terminal to send a DMRS of a service channel, and a function of instructing the terminal to send a DMRS of a control channel. 28. The network side device according to claim 25 or 27, wherein, The first-level configuration parameter includes at least one of an identifier of the first antenna port group, a first time-domain density, and a first frequency-domain density; The second-level configuration parameters include at least one of an identification of the second antenna port group, a second time-domain density, and a second frequency-domain density. 29. The network-side device according to claim 28, wherein the second antenna port group is a subset of the first antenna port group. 30. The network-side device according to claim 28, wherein the first time-domain density and the second time-domain density have an intersection. 31. The network-side device according to claim 28, wherein the first frequency domain density and the second frequency domain density have an intersection. 32 . The network side device according to claim 24 , wherein, when the first configuration unit sends the first-level configuration parameters to the terminal, it is specifically configured to: control the radio resources through a broadcast message, at least one of signaling, a control unit of the media access layer, and a physical layer control message indication, and send the first-level configuration parameter to the terminal. 33. The network-side device according to claim 26, wherein when the third configuration unit sends the first-level configuration parameters to the terminal, the third configuration unit is specifically configured to: use a broadcast message, radio resource control at least one of signaling, a control unit of the media access layer, and a physical layer control message indication, and send the first-level configuration parameter to the terminal. 34. The network-side device according to claim 25, wherein, when the second configuration unit sends the second-level configuration parameters to the terminal, it is specifically configured to: Send the second-level configuration parameter to the terminal through at least one of a broadcast message, radio resource control signaling, a control element of the media access layer, and a physical layer control message indication; or Part of the parameters in the second-level configuration parameters are combined with the first-level configuration parameters through at least one of broadcast messages, radio resource control signaling, media access layer control elements, and physical layer control message indications send to the terminal, and send the remaining parameters in the second-level configuration parameters to the terminal through the physical layer downlink control information. 35. The network-side device according to claim 27, wherein when the fourth configuration unit sends the second-level configuration parameters to the terminal, it is specifically configured to: Send the second-level configuration parameter to the terminal through at least one of a broadcast message, radio resource control signaling, a control element of the media access layer, and a physical layer control message indication; or Part of the parameters in the second-level configuration parameters are combined with the first-level configuration parameters through at least one of broadcast messages, radio resource control signaling, media access layer control elements, and physical layer control message indications send to the terminal, and send the remaining parameters in the second-level configuration parameters to the terminal through the physical layer downlink control information. 36. A terminal, characterized in that, comprising: a function execution module, configured to receive a configuration parameter sent by the network-side device, and execute a DMRS function corresponding to the configuration parameter according to the configuration parameter; Wherein, the configuration parameters include configuration parameters of at least one configuration level, and the configuration parameters of each of the configuration levels correspond to at least one DMRS function; Wherein, in a subframe dominated by the following downlink services, the DMRS functions included in each of the configuration levels include: a control channel demodulation function, a traffic channel demodulation function, a radio resource management RRM measurement function, and a phase noise estimation function. at least one of; In a subframe dominated by uplink services, the DMRS functions included in each of the configuration levels include: at least one of a control channel demodulation function, a function of instructing the terminal to send a DMRS of a traffic channel, and a function of instructing the terminal to send a DMRS of a control channel ; The configuration parameters corresponding to the DMRS function include: at least one of an antenna port group identifier, a time-domain density, and a frequency-domain density; The antenna port group identifier indicates the time-frequency resources occupied by a group of antenna ports; the time-domain density indicates the proportion of time-domain symbols occupied by a certain antenna port group in a transmission time interval; the frequency-domain density indicates a certain The proportion of frequency domain subcarriers occupied by an antenna port group in a partial bandwidth or full bandwidth or subband. 37. The terminal according to claim 36, wherein the configuration level comprises a first configuration level and a second configuration level; The function execution module includes: a first execution unit, configured to receive the first-level configuration parameters sent by the network-side device in the subframe where the downlink service is dominant, and execute the DMRS function corresponding to the first-level configuration parameters; The DMRS functions corresponding to the first-level configuration parameters in the subframes where the downlink service is dominant include: a control channel demodulation function, a traffic channel demodulation function, a radio resource management RRM measurement function, and a phase noise estimation function. at least one. 38. The terminal according to claim 37, wherein the function execution module further comprises: a second execution unit, configured to receive the second-level configuration parameters sent by the network-side device in the subframe where the downlink service is the mainstay, and execute the DMRS function corresponding to the second-level configuration parameters; The DMRS functions corresponding to the second-level configuration parameters in the subframes where the downlink service is dominant include: a control channel demodulation function, a traffic channel demodulation function, a radio resource management RRM measurement function, and a phase noise estimation function. at least one. 39. The terminal according to claim 36, wherein the configuration level comprises a first configuration level and a second configuration level; The function execution module includes: a third execution unit, configured to receive the first-level configuration parameters sent by the network-side device in the subframe where the uplink service is the mainstay, and execute the DMRS function corresponding to the first-level configuration parameters; The DMRS function corresponding to the first-level configuration parameter in the subframe where the uplink service is the main one includes at least one of the control channel demodulation function, the function of instructing the terminal to send the DMRS of the service channel, and the function of instructing the terminal to send the DMRS of the control channel. one. 40. The terminal according to claim 39, wherein the function execution module further comprises: a fourth execution unit, configured to receive the second-level configuration parameter sent by the network-side device in the subframe where the uplink service is the mainstay, and execute the DMRS function corresponding to the second-level configuration parameter; The DMRS function corresponding to the second-level configuration parameter in the subframe where the uplink service is dominant includes at least one of a control channel demodulation function, a function of instructing the terminal to send a DMRS of a service channel, and a function of instructing the terminal to send a DMRS of a control channel. one. 41. The terminal according to claim 38 or 40, wherein, The first-level configuration parameter includes at least one of an identifier of the first antenna port group, a first time-domain density, and a first frequency-domain density; The second-level configuration parameters include at least one of an identification of the second antenna port group, a second time-domain density, and a second frequency-domain density. 42. The terminal of claim 41, wherein the second antenna port group is a subset of the first antenna port group. 43. The terminal according to claim 41, wherein the first time-domain density and the second time-domain density have an intersection. 44. The terminal according to claim 41, wherein the first frequency domain density and the second frequency domain density have an intersection. 45. The terminal according to claim 37, wherein, when the first execution unit receives the first-level configuration parameters sent by the network-side device, it is specifically configured to: use a broadcast message, radio resource control signaling , at least one of a control unit of the media access layer and a physical layer control message indication, to receive the first-level configuration parameters sent by the network side device. 46. The terminal according to claim 39, wherein, when the third execution unit receives the first-level configuration parameters sent by the network-side device, it is specifically configured to: use a broadcast message, radio resource control signaling , at least one of a control unit of the media access layer and a physical layer control message indication, to receive the first-level configuration parameters sent by the network side device. 47. The terminal according to claim 38, wherein when the second execution unit receives the second-level configuration parameters sent by the network-side device, it is specifically configured to: Receive the second-level configuration parameters sent by the network-side device through at least one of a broadcast message, radio resource control signaling, a media access layer control unit, and a physical layer control message indication; or Receive the first-level configuration parameters and part of the second-level configuration sent by the network-side device through at least one of broadcast messages, radio resource control signaling, media access layer control units, and physical layer control message indications parameters, and receive the remaining parameters in the second-level configuration parameters sent by the network-side device through the physical layer downlink control information. 48. The terminal according to claim 40, wherein, when the fourth execution unit receives the second-level configuration parameters sent by the network-side device, it is specifically configured to: Receive the second-level configuration parameters sent by the network-side device through at least one of a broadcast message, radio resource control signaling, a media access layer control unit, and a physical layer control message indication; or Receive the first-level configuration parameters and part of the second-level configuration sent by the network-side device through at least one of broadcast messages, radio resource control signaling, media access layer control units, and physical layer control message indications parameters, and receive the remaining parameters in the second-level configuration parameters sent by the network-side device through the physical layer downlink control information.

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