CN108075868B

CN108075868B - Demodulation reference signal DMRS parameter configuration method, network side equipment and terminal

Info

Publication number: CN108075868B
Application number: CN201611019502.4A
Authority: CN
Inventors: 孙晓东; 宋扬; 杨宇
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2016-11-17
Filing date: 2016-11-17
Publication date: 2020-09-01
Anticipated expiration: 2036-11-17
Also published as: CN108075868A

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

Demodulation reference signal DMRS parameter configuration method, network side equipment and terminal

Technical Field

The invention relates to the technical field of communication, in particular to a demodulation reference signal DMRS parameter configuration method, network side equipment and a terminal.

Background

In a conventional fourth Generation (4Generation, 4G) mobile communication system, a downlink Demodulation Reference signal (DMR) may be used for Demodulation of a traffic channel, a control channel, and a broadcast channel, and through DMRs pattern design fixed in time and frequency domains and zc (zadoff chu) sequence design, the DMRs may be used to estimate delay spread and doppler shift of a channel.

In a Long Term Evolution (LTE) system, a cell specific Reference Signal (CRS) supports a maximum of 4 antenna ports, and can be used for downlink traffic channel demodulation, and a DMRS pattern design of the cell specific Reference Signal 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 a transmission mode is single-stream beamforming, and a DMRS pattern design of the UE is shown in fig. 2.

In the LTE system, the UE-specific RS supports 4 antenna ports at maximum, and is used for downlink traffic channel demodulation when the transmission mode is multi-stream beamforming, and the DMRS pattern design is shown in fig. 3.

In a future fifth Generation (5Generation, 5G) mobile communication system, DMRS may be used not only for demodulation of a traffic channel and a control channel but also for Radio Resource Management (RRM) measurement. Due to the use of higher frequencies, the system bandwidth will be wider, the number of antennas will also increase, and if the whole bandwidth of all frequencies still adopts the traditional fixed DMRS pattern design, the DMRS overhead will be larger, so that resources for service transmission are relatively reduced, and the system spectrum efficiency is reduced. In addition, the fixed DMRS pattern cannot adaptively perform channel measurement as needed, and thus may also result in an inability to accurately estimate channel characteristics.

Disclosure of Invention

The embodiment of the invention provides a demodulation reference signal DMRS parameter configuration method, network side equipment and a terminal, and aims to solve the problems that DMRS in a 5G system is high in cost, low in system spectrum efficiency and incapable of accurately estimating channel characteristics.

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

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.

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

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

the configuration parameters comprise configuration parameters of at least one configuration level, and each configuration parameter of the configuration level corresponds to at least one DMRS function.

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

the terminal comprises a grade configuration module, a grade configuration module and a grade configuration module, wherein the grade configuration module is used for dividing at least one DMRS function which needs to be executed by the terminal into at least one configuration grade;

and the parameter configuration module is used for determining the 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.

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

the function execution module is used for receiving the configuration parameters sent by the network side equipment and executing the DMRS function corresponding to the configuration parameters according to the configuration parameters;

In this way, in the embodiment of the present invention, by dividing at least one DMRS function that a terminal needs to execute into at least one configuration level and determining a configuration parameter of a DMRS function included in each configuration level, the determined configuration parameter is sent to the terminal, so that the terminal can execute a corresponding DMRS function according to the configuration parameter after receiving the configuration parameter. Therefore, according to different function requirements of the DMRS and the configuration levels of the DMRS functions, the embodiment of the invention can dynamically configure the parameter data corresponding to the DMRS functions for the terminal, thereby reducing the DMRS overhead, effectively solving the problems that the DMRS overhead is large, the system spectrum efficiency is low and the channel characteristics cannot be accurately estimated in a 5G system, further improving the transmission effectiveness and reliability, and improving the average transmission rate of a cell and the transmission rate of edge users.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 illustrates a conventional CRS antenna port pattern in an LTE system;

FIG. 2 illustrates a conventional UE-specific RS pattern when the LTE transmission mode is single stream beamforming;

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

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

fig. 5 shows a flowchart of a demodulation reference signal DMRS parameter configuration method according to a second embodiment of the present invention;

fig. 6 shows one of the antenna ports selected from the first configuration level and the second configuration level according to the second embodiment of the present invention;

fig. 7 illustrates one of DMRS patterns of a first configuration level and a second configuration level in a second embodiment of the present invention;

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

fig. 9 illustrates a second DMRS pattern for a first configuration level and a second configuration level in a second embodiment of the present invention;

fig. 10 is a flowchart illustrating a method for configuring DMRS parameters of a demodulation reference signal according to a third embodiment of the present invention;

fig. 11 is a flowchart illustrating a method for configuring DMRS parameters of a demodulation reference signal according to a fourth embodiment of the present invention;

fig. 12 is a block diagram showing a network device according to a fifth embodiment of the present invention;

fig. 13 is a second block diagram of a network device according to a fifth embodiment of the present invention;

fig. 14 shows one of the configuration block diagrams of a terminal according to a sixth embodiment of the present invention;

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

fig. 16 is a block diagram showing the construction of a terminal according to a seventh embodiment of the present invention;

fig. 17 is a block diagram showing a network device according to an eighth embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

First embodiment

The embodiment of the invention provides a demodulation reference signal (DMRS) parameter configuration method, which is applied to network side equipment, wherein the network equipment can be a base station, an evolved node, a transceiving node and the like, but is not limited to the equipment. As shown in fig. 4, the method includes:

step 401: and dividing at least one DMRS function required to be executed by the terminal into at least one configuration level.

Among them, in the 5G mobile communication system, DMRS may 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 the DMRS, and the DMRS is required to perform phase noise estimation in high-frequency communication. Therefore, different DMRS functions require different DMRS pattern designs, and therefore, a flexible, on-demand configuration and DMRS transmission method is important.

In the embodiment of the invention, the network side equipment divides the DMRS function which needs to be executed by the terminal into at least one configuration level. Wherein each configuration level at least comprises one DMRS function. That is, in the following traffic-dominated subframes, each configuration level includes at least one of a control channel demodulation function, a traffic channel demodulation function, an RRM measurement function, a phase noise estimation function. In the above business-oriented subframes, each configuration level includes at least one of a control channel demodulation function, a DMRS function instructing the terminal to transmit a traffic channel, and a DMRS function instructing the terminal to transmit a control channel.

Further, which DMRS functions are located at which configuration level may be determined by the network side device according to the specific functions and requirements of the DMRSs, so that the DMRSs with a high configuration level may assist in executing the DMRSs with a low configuration level. For example, the control channel demodulation may be set to a first configuration level, considering that the control channel is demodulated first, and the DMRS has coverage requirements and transmission reliability requirements. In addition, considering that the traffic channel DMRS may dynamically change according to the control channel indication as required for actual traffic transmission, the traffic channel demodulation may be set to the second configuration level.

Step 402: and determining configuration parameters of the DMRS function included in each configuration level, and sending the configuration parameters to the terminal.

And the configuration parameters are used for executing the DMRS function according to the configuration parameters after the terminal receives the configuration parameters.

After the configuration levels are divided for the DMRS functions that the terminal needs to execute 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 execute the corresponding DMRS functions according to the received configuration parameters.

Wherein, the DMRS functions are different, and 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 identification, a time domain density, and a frequency domain density. Wherein the antenna port group identification indicates 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 partial bandwidth or full bandwidth or subband; the time domain density indicates the proportion of a certain antenna port group occupying a time domain symbol within one transmission time interval.

Therefore, antenna port groups required by the terminal to perform different DMRS functions may be different, and applied network resources are different, that is, time domain densities and frequency domain densities corresponding to different DMRS functions are different. The embodiment of the invention can dynamically configure the time-frequency resource density according to the DMRS function without adopting a fixed pattern, thereby saving the DMRS overhead, increasing the resources for service transmission and further improving the system spectrum efficiency.

In summary, the embodiments of the present invention can dynamically configure parameter data corresponding to each DMRS function for a terminal according to different DMRS function requirements and a configuration level of each DMRS function, thereby reducing DMRS overhead, effectively solving the problems of large DMRS overhead, low system spectrum efficiency, and incapability of accurately estimating channel characteristics in a 5G system, further improving transmission effectiveness and reliability, and improving cell average transmission rate and edge user transmission rate.

Second embodiment

The embodiment of the invention provides a demodulation reference signal (DMRS) parameter configuration method, which is applied to network side equipment, wherein the network equipment can be a base station, an evolved node, a transceiving node and the like, but is not limited to the equipment. As shown in fig. 5, the method includes:

step 501: and dividing at least one DMRS function required to be executed by the terminal into at least one configuration level.

In the embodiment of the present invention, the network side device divides the DMRS function that the terminal needs to execute into the first configuration level and the second configuration level. Wherein each configuration level at least comprises one DMRS function. That is, in the sub-frame where the following business matters are dominant, at least one of a control channel demodulation function, a traffic channel demodulation function, an RRM measurement function, and a phase noise estimation function is included in each of the first configuration level and the second configuration level. In the subframe with the main business as above, the first configuration level and the second configuration level each include at least one of a control channel demodulation function, a DMRS function for indicating the terminal to transmit a traffic channel, and a DMRS function for indicating the terminal to transmit a control channel.

Further, which DMRS functions are located at which configuration level are specific, and the network side device may determine according to the specific functions and requirements of the DMRSs, so that the DMRSs with a high configuration level may assist in executing the DMRSs with a low configuration level, thereby further reducing DMRS overhead.

Therefore, preferably, in a subframe with downlink service as a main component, the DMRS function in the first configuration level includes a control channel demodulation function; the DMRS functions in the second configuration level include at least one of traffic channel demodulation functions, RRM measurement functions, and phase noise estimation. For example, when the DMRS in the first configuration level comprises control channel demodulation and the DMRS function in the second configuration level comprises traffic channel demodulation, the control channel demodulation may be set to the first configuration level considering that the control channel is demodulated first and the DMRS has coverage requirements and transmission reliability requirements, and the traffic channel demodulation may be set to the second configuration level considering that the traffic channel DMRS may be dynamically changed according to the control channel indication as required for actual traffic transmission.

In the same way, preferably, in the subframe in which the uplink service is dominant, the DMRS function in the first configuration level includes a control channel demodulation function; the DMRS function in the second configuration level comprises at least one of a DMRS function for indicating the terminal to send a traffic channel and a DMRS function for indicating the terminal to send a control channel, so that the demodulation function of the control channel in the first configuration level can assist the indication terminal in the second configuration level to send the DMRS function of the traffic channel and/or the indication terminal in the second configuration level to send the DMRS function of the control channel, and the DMRS overhead is further reduced.

Step 502: and in the subframe with the main downlink service, determining a first-stage configuration parameter of the DMRS function included in the first configuration level, and sending the first-stage configuration parameter to the terminal.

In a subframe with a main downlink service, the first configuration level includes at least one of a control channel demodulation function, a service channel demodulation function, an RRM measurement function, and a phase noise estimation function, and the first-stage configuration parameters include configuration parameters corresponding to at least one of the control channel demodulation function, the service channel demodulation function, the RRM measurement function, and the phase noise estimation function.

In addition, in a subframe in which downlink traffic is dominant, if DMRS functions are different, specific contents included in 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 identification, a time domain density, and a frequency domain density. I.e. the first level configuration parameters comprise at least one of an identification 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 resource occupied by the first antenna port group; the first frequency domain density indicates a proportion of frequency domain subcarriers occupied by the first antenna port group in a partial bandwidth or a full bandwidth or a subband; the first time domain density indicates a proportion of the first antenna port group occupying time domain symbols within one transmission time interval.

Correspondingly, when the first-stage configuration parameters include three contents, namely an identifier of the first antenna port group, a first time domain density and a first frequency domain density, the network side equipment selects an antenna port supported by the network side equipment at first; then, selecting a first antenna port group for performing the DMRS function included in the first configuration level from the antenna ports supported by the network side device according to the DMRS function included in the first configuration level (i.e., at least one of the control channel demodulation function, the traffic channel demodulation function, the RRM measurement function, and the phase noise estimation function); thirdly, according to the network configuration conditions (such as the service type and the system frequency) and the DMRS function included in the first configuration level, determining a first time domain density and a first frequency domain density for executing the DMRS function included in the first configuration level, thereby obtaining the specific content included in the first-level configuration parameter.

In addition, preferably, when the first-level configuration parameter is sent to the terminal, the method specifically includes: and sending the first-stage configuration parameters to the terminal through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer. That is, the embodiment of the present invention provides various ways of sending the first-level configuration parameters to the terminal, so that the sending way of the first-level configuration parameters can be reasonably selected according to the actual configuration and the operating condition of the network.

Step 503: and in the subframe with the main downlink service, determining a second-stage configuration parameter of the DMRS function included in the second configuration level, and sending the second-stage configuration parameter to the terminal.

In the subframe with the downlink service as the main component, the second configuration level includes at least one of a control channel demodulation function, a service channel demodulation function, an RRM measurement function, and a phase noise estimation function, and the second configuration parameter includes a configuration parameter corresponding to at least one of the control channel demodulation function, the service channel demodulation function, the RRM measurement function, and the phase noise estimation function.

In addition, in a subframe in which downlink traffic is dominant, if DMRS functions are different, specific contents included in 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 identification, a time domain density, and a frequency domain density. I.e. the second level configuration parameters comprise at least one of an identification 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 second antenna group ports; the second frequency domain density indicates a proportion of frequency domain subcarriers occupied by the second antenna port group in a partial bandwidth or a full bandwidth or a subband; the second time domain density indicates a proportion of the time domain symbols occupied by the second group of antenna ports within one transmission time interval.

Correspondingly, when the second-stage 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 selects the antenna port supported by the network side device; then, selecting a second antenna port group for performing the DMRS function included in the second configuration level from the antenna ports supported by the network-side device according to the DMRS function included in the second configuration level (i.e., at least one of the control channel demodulation function, the traffic channel demodulation function, the RRM measurement function, and the phase noise estimation function); thirdly, according to the network configuration conditions (such as the service type and the system frequency) and the DMRS functions included in the second configuration level, determining a second time domain density and a second frequency domain density for executing the DMRS functions included in the second configuration level, thereby obtaining specific contents included in the second-level configuration parameters.

In addition, preferably, when the second-stage configuration parameter is sent to the terminal, the method specifically includes: sending the second-level configuration parameters to the terminal through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer; or sending part of the second-stage configuration parameters and the first-stage configuration parameters to the terminal through at least one of broadcast messages, radio resource control signaling, a control unit of a media access layer and physical layer control message instructions, and sending the rest of the second-stage configuration parameters to the terminal through physical layer downlink control information.

The other parameters in the second-stage configuration parameters are parameters except for a part of the second-stage configuration parameters which are sent to the terminal together with the first-stage configuration parameters. For example, when the second-stage 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 parameter that identifies the antenna port group identifier of 0 is sent to the terminal together with the first-stage configuration parameters through at least one of a broadcast message, a radio resource control signaling, a control unit of a medium access layer, and a physical layer control message indication, the remaining parameters in the second-stage configuration parameters include two parameters, i.e., a time domain density of 1 and a frequency domain density of 1/6.

As can be seen from the above, the embodiments of the present invention provide various ways to transmit the second-level configuration parameters to the terminal, so that the transmission way of the second-level configuration parameters can be reasonably selected according to the actual configuration and operating conditions of the network. In addition, the other parameters in the second-stage configuration parameters are sent to the terminal through the physical layer downlink control information, so that the other parameters in the second-stage configuration parameters are carried by the physical layer downlink control information, the information sending speed is higher, and the physical layer downlink control information overhead is reduced.

Step 504: and in the subframe with the uplink service as the main part, determining a first-stage configuration parameter of the DMRS function included in the first configuration level, and sending the first-stage configuration parameter to the terminal.

In the subframe with the uplink service as the main part, the first configuration level comprises at least one of a control channel demodulation function, a DMRS function for indicating the terminal to send the service channel and a DMRS function for indicating the terminal to send the control channel, and the first-stage configuration parameters comprise configuration parameters corresponding to at least one of the DMRS function for controlling the channel, the DMRS function for indicating the terminal to send the service channel and the DMRS function for indicating the terminal to send the control channel.

In addition, in a subframe in which an uplink service is mainly used, if DMRS functions are different, specific contents included in 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 identification, a time domain density, and a frequency domain density. I.e. the first level configuration parameters comprise at least one of an identification 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 resource occupied by the first antenna port group; the first frequency domain density indicates a proportion of frequency domain subcarriers occupied by the first antenna port group in a partial bandwidth or a full bandwidth or a subband; the first time domain density indicates a proportion of the first antenna port group occupying time domain symbols within one transmission time interval.

Correspondingly, when the first-stage configuration parameters include three contents, namely an identifier of the first antenna port group, a first time domain density and a first frequency domain density, the network side equipment selects an antenna port supported by the network side equipment at first; then, selecting a first antenna port group used for executing the DMRS function included in the first configuration level from the antenna ports supported by the network side equipment according to the DMRS function included in the first configuration level (namely at least one of a control channel demodulation function, a DMRS function for indicating the terminal to transmit a traffic channel and a DMRS function for indicating the terminal to transmit a control channel); thirdly, according to the network configuration conditions (such as the service type and the system frequency) and the DMRS function included in the first configuration level, determining a first time domain density and a first frequency domain density for executing the DMRS function included in the first configuration level, thereby obtaining the specific content included in the first-level configuration parameter.

Step 505: and in the subframe with the uplink service as the main part, determining a second-stage configuration parameter of the DMRS function included in the second configuration level, and sending the second-stage configuration parameter to the terminal.

In the subframe with the uplink service as the main part, the second configuration level comprises at least one of a control channel demodulation function, a DMRS function for indicating the terminal to send the service channel and a DMRS function for indicating the terminal to send the control channel, and the second configuration parameters comprise configuration parameters corresponding to at least one of the DMRS function for controlling the channel, the DMRS function for indicating the terminal to send the service channel and the DMRS function for indicating the terminal to send the control channel.

In addition, in a subframe in which an uplink service is mainly used, if DMRS functions are different, specific contents included in 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 identification, a time domain density, and a frequency domain density. I.e. the second level configuration parameters comprise at least one of an identification 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 second antenna group ports; the second frequency domain density indicates a proportion of frequency domain subcarriers occupied by the second antenna port group in a partial bandwidth or a full bandwidth or a subband; the second time domain density indicates a proportion of the time domain symbols occupied by the second group of antenna ports within one transmission time interval.

Correspondingly, when the second-stage 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 selects the antenna port supported by the network side device; then, selecting a second antenna port group for executing the DMRS function included in the second configuration level from the antenna ports supported by the network side device according to the DMRS function included in the second configuration level (i.e., at least one of a control channel demodulation function, a DMRS function indicating that the terminal transmits a traffic channel, and a DMRS function indicating that the terminal transmits a control channel); thirdly, according to the network configuration conditions (such as the service type and the system frequency) and the DMRS functions included in the second configuration level, determining a second time domain density and a second frequency domain density for executing the DMRS functions included in the second configuration level, thereby obtaining specific contents included in the second-level configuration parameters.

In summary, in both the downlink service-oriented subframe and the uplink service-oriented subframe, as long as the terminal executes different DMRS functions, the antenna port groups applied to the terminal may be different, and the network resources applied to the terminal may also be different, that is, the time domain density and the frequency domain density corresponding to different DMRS functions are different. In the embodiment of the invention, the time-frequency resource density can be dynamically configured according to the actual DMRS function no matter in the subframe mainly based on the downlink service or the subframe mainly based on the uplink service, and a fixed pattern is not adopted, so that the DMRS overhead is saved, the resources used for service transmission are increased, and the system spectrum efficiency is improved. That is, the embodiments of the present invention are not only applicable to downlink DMRS of a future 5G mobile communication system, but also applicable to transmission of uplink DMRS. In addition, embodiments of the present invention are also applicable to other types of Reference Signals (RSs), such as Channel State information Reference signals (CSI-RSs).

Further, whether in the subframe mainly based on the downlink service or the subframe mainly based on the uplink service, the second antenna port group in the second-stage configuration parameter is a subset of the first antenna port group in the first-stage configuration parameter. That is, the second antenna port group is selected from the first antenna port group, it is not necessary to detect other antenna ports outside the first port group again, so that signaling overhead is reduced, and DMRS overhead is further reduced.

Furthermore, no matter the subframe is mainly a downlink service subframe or a subframe is mainly an uplink service subframe, the first time domain density in the first-stage configuration parameter and the second time domain density in the second-stage configuration parameter have an intersection. For example, the first configuration level and the second configuration level both include a control channel demodulation function, and the time domain density corresponding to the control channel demodulation function in the second-stage configuration parameter may be directly adopted, so as to further simplify the determination process of the second-stage configuration parameter, and further reduce DMRS overhead.

Furthermore, no matter the subframe mainly includes downlink services or uplink services, the first frequency domain density in the first-stage configuration parameter and the second frequency domain density in the second-stage configuration parameter have intersection. For example, the first configuration level and the second configuration level both include a control channel demodulation function, and the frequency domain density corresponding to the control channel demodulation function in the second-stage configuration parameter may be directly adopted, so as to further simplify the determination process of the second-stage configuration parameter, and further reduce DMRS overhead.

As can be seen from the above description, in both the subframe with the following business as the main part and the subframe with the uplink business as the main part, the parameter corresponding to a certain DMRS function in the first-stage configuration parameter may be multiplexed into the parameter corresponding to the DMRS function in the second-stage configuration parameter.

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

example one: in a future 5G mobile communication system, 8 DMRS antenna ports are supported in downlink. Wherein, the 8 antenna ports are divided into 2 antenna port groups, and each group has 4 sub-antenna ports. In addition, a first configuration level is mainly used for downlink control channel demodulation, at the moment, the maximum support of 2 antenna ports in the first configuration level is used for transmitting, the beam coverage range is wider, and the beam forming gain is smaller; the second configuration level is mainly used for downlink traffic channel demodulation and/or RRM measurement, and at this time, the maximum number of the second configuration level supports transmission of 8 antenna ports, the beam coverage is narrow, and the beamforming gain is large, as shown in fig. 6. When the first-stage configuration parameters include 0 for the first antenna port group, 1 for the first time domain density, 1/6 for the first frequency domain density, and the second-stage configuration parameters include 1/6 for the second antenna port group, 0 and 1 for the second time domain and the second frequency domain density, DMRS patterns for the first configuration level and the second configuration level are as shown in fig. 7.

Example two: in a future 5G mobile communication system, 8 DMRS antenna ports are supported in downlink. Wherein, the 8 antenna ports are divided into 2 antenna port groups, and each group has 4 sub-antenna ports. In addition, a first configuration level is mainly used for downlink control channel demodulation, at the moment, the maximum support of 2 antenna ports in the first configuration level is used for transmitting, the beam coverage range is wider, and the beam forming gain is smaller; the second configuration level is mainly used for downlink traffic channel demodulation and/or RRM measurement, and at this time, the maximum number of the second configuration level supports transmission of 8 antenna ports, the beam coverage is narrow, and the beam forming gain is large, as shown in fig. 8. When the first-stage configuration parameters include 0 for the first antenna port group, 1 for the first time domain density, 1/6 for the first frequency domain density, and the second-stage configuration parameters include 0 for the second antenna port group, 1 for the second time domain, 1/6 for the second frequency domain density, DMRS patterns of the first configuration level and the second configuration level are as shown in fig. 9.

Therefore, the method for configuring the DMRS parameters of the demodulation reference signals can dynamically configure the time-frequency resource density according to the DMRS function without adopting a fixed pattern, thereby saving the DMRS overhead, increasing the resources for service transmission and further improving the system spectrum efficiency.

In summary, in the embodiments of the present invention, DMRS functions that a terminal needs to execute are divided into a first configuration level and a second configuration level, and corresponding configuration parameters are determined according to DMRS functions respectively included in the first configuration level and the second configuration level in a subframe mainly including a following service and a subframe mainly including an uplink service, and the configuration parameters are sent to the terminal, so that the terminal can execute the corresponding DMRS functions according to the configuration parameters after receiving the configuration parameters. Therefore, according to different function requirements of the DMRS and the configuration levels of the DMRS functions, the embodiment of the invention can dynamically configure the parameter data corresponding to the DMRS functions for the terminal, thereby reducing the DMRS overhead, effectively solving the problems that the DMRS overhead is large, the system spectrum efficiency is low and the channel characteristics cannot be accurately estimated in a 5G system, further improving the transmission effectiveness and reliability, and improving the average transmission rate of a cell and the transmission rate of edge users.

Third embodiment

The embodiment of the invention provides a demodulation reference signal (DMRS) parameter configuration method, which is applied to a terminal, wherein the terminal can be a mobile phone, a tablet Personal computer, a Personal Digital Assistant (PDA), a vehicle-mounted computer and the like, but is not limited to these devices. As illustrated in fig. 10, the method includes:

step 1001: and receiving the configuration parameters sent by the network side equipment, and executing the DMRS function corresponding to the configuration parameters according to the configuration parameters.

Among them, in the 5G mobile communication system, DMRS may 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 the DMRS, and the DMRS is required to perform phase noise estimation in high-frequency communication. However, the legacy fixed DMRS pattern limits certain DMRS functions and increases DMRS overhead. However, in the embodiment of the present invention, the configuration parameter received by the terminal is determined by the network side device according to the actual DMRS function, and then the terminal may execute the corresponding DMRS function according to the dynamically changing configuration parameter.

In addition, the configuration parameters include configuration parameters of at least one configuration level, and each configuration parameter of the configuration level corresponds to at least one DMRS function. I.e. each configuration level comprises at least one DMRS function. Specifically, in the 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 the above business-oriented subframes, each configuration level includes at least one of a control channel demodulation function, a DMRS function instructing the terminal to transmit a traffic channel, and a DMRS function instructing the terminal to transmit 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, the terminal may perform functions of control channel demodulation, traffic channel demodulation, RRM measurement, phase noise estimation, transmission of a traffic channel DMRS, and transmission of a control channel DMRS according to the parameter data. Therefore, the terminal can execute the corresponding DMRS function according to the requirement, and the channel estimation accuracy can be improved. The accurate channel estimation means that the adopted modulation coding mode is more appropriate, so that the transmission reliability and the effectiveness are improved, and the transmission rate of cell average and edge users can be further improved.

In summary, 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. The configuration parameters are dynamically configured by the network side equipment according to different function requirements of the DMRS, so that the terminal can execute the corresponding DMRS function by using the resources determined by the configuration parameters, thereby reducing the DMRS overhead, effectively solving the problems that the DMRS overhead is large, the system spectrum efficiency is low and the channel characteristics cannot be accurately estimated in a 5G system, further improving the transmission effectiveness and reliability, and improving the cell average transmission rate and the edge user transmission rate.

Fourth embodiment

The embodiment of the invention provides a demodulation reference signal (DMRS) parameter configuration method, which is applied to a terminal, wherein the terminal can be a mobile phone, a tablet Personal computer, a Personal Digital Assistant (PDA), a vehicle-mounted computer and the like, but is not limited to these devices. As shown in fig. 11, the method includes:

step 1101: and in the subframe with the main downlink service, receiving the first-stage configuration parameters sent by the network side equipment, and executing the DMRS function corresponding to the first-stage configuration parameters.

In a subframe with a main downlink service, the DMRS function corresponding to the first-stage configuration parameter 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, and the first-stage 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.

For example, when the first-stage configuration parameters include configuration parameters corresponding to a control channel demodulation function, and the configuration parameters include an antenna port identifier of 0, a time domain density of 1, and a frequency domain density of 1/6, the terminal demodulates the control channel using resources determined on the antenna port identifier of 0 according to the time domain density and the frequency domain density.

Preferably, when the terminal receives the first-stage configuration parameter, the method specifically includes: and receiving the first-stage configuration parameters sent by the network side equipment through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer. That is, the embodiments of the present invention provide various ways to receive the first-level configuration parameters, so that the receiving way of the first-level configuration parameters can be reasonably selected according to the actual configuration and the operating condition of the network.

Step 1102: and in the subframe with the main downlink service, receiving a second-stage configuration parameter sent by the network side equipment, and executing a DMRS function corresponding to the second-stage configuration parameter.

In the subframe with the downlink service as the main part, the DMRS function corresponding to the second-stage configuration parameter 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, and the second-stage 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.

For example, when the second-stage configuration parameters include configuration parameters corresponding to a traffic channel demodulation function, and the configuration parameters include identifiers of

antenna ports

0 and 1, and time domain density and frequency domain density are both 1/6, the terminal performs demodulation of the traffic channel by using resources determined on the antenna ports identified as 0 and 1 according to the time domain density and the frequency domain density.

Preferably, when the terminal receives the second-stage configuration parameter, the method specifically includes: receiving a second-level configuration parameter sent by the network side equipment through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer; or receiving the first-stage configuration parameters and part of the second-stage configuration parameters sent by the network side equipment through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a physical layer control message indication, and receiving the rest parameters in the second-stage configuration parameters sent by the network side equipment through physical layer downlink control information.

As can be seen from the above, the embodiments of the present invention provide various ways to receive the second-stage configuration parameters, so that the way to receive the second-stage configuration parameters can be reasonably selected according to the actual configuration and operating conditions of the network. In addition, the rest parameters in the second-stage configuration parameters are received through the physical layer downlink control information, so that the rest parameters in the second-stage configuration parameters are carried by the physical layer downlink control information, the information receiving speed is higher, and the physical layer downlink control information overhead is reduced.

Step 1103: and in the subframe with the main uplink service, receiving the first-stage configuration parameters sent by the network side equipment, and executing the DMRS function corresponding to the first-stage configuration parameters.

In a subframe with an uplink service as a main part, the DMRS function corresponding to the first-stage configuration parameter comprises: and at least one of a control channel demodulation function, an indication terminal sending service channel DMRS function and an indication terminal sending control channel DMRS function, wherein the first-stage configuration parameters comprise configuration parameters corresponding to at least one of the control channel demodulation function, the indication terminal sending service channel DMRS function and the indication terminal sending control channel DMRS function.

Preferably, when the terminal receives the first-stage configuration parameter, the method specifically includes: and receiving the first-stage configuration parameters sent by the network side equipment through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer. That is, the embodiment of the present invention provides various ways of receiving the first-stage configuration parameters, so that the receiving way of the first-stage configuration parameters can be reasonably selected according to the actual configuration and the operating condition of the network.

Step 1104: and in the subframe with the main uplink service, receiving a second-stage configuration parameter sent by the network side equipment, and executing a DMRS function corresponding to the second-stage configuration parameter.

In the subframe with the uplink service as the main part, the DMRS function corresponding to the second-stage configuration parameter includes: and at least one of a control channel demodulation function, an indication terminal sending service channel DMRS function and an indication terminal sending control channel DMRS function, wherein the second-stage configuration parameters comprise configuration parameters corresponding to at least one of the control channel demodulation function, the indication terminal sending service channel DMRS function and the indication terminal sending control channel DMRS function.

In summary, in both the downlink service-oriented subframe and the uplink service-oriented subframe, as long as the terminal executes different DMRS functions, the antenna port groups applied to the terminal may be different, and the network resources applied to the terminal may also be different, that is, the time domain density and the frequency domain density corresponding to different DMRS functions are different. In the embodiment of the invention, no matter the subframe mainly comprises the downlink service or the subframe mainly comprises the uplink service, the terminal can execute the corresponding DMRS function according to the time-frequency resource density dynamically configured by the network side equipment according to the actual DMRS function without adopting a fixed pattern, thereby saving the DMRS overhead, increasing the resources for service transmission and further improving the system spectrum efficiency.

Furthermore, no matter the subframe is mainly a downlink service subframe or a subframe is mainly an uplink service subframe, the first time domain density in the first-stage configuration parameter and the second time domain density in the second-stage configuration parameter have an intersection. For example, the first configuration level and the second configuration level both include a control channel demodulation function, and the time domain density corresponding to the control channel demodulation function in the second-level configuration parameter may be directly adopted by the time domain density corresponding to the control channel demodulation function in the first-level configuration parameter, so as to further simplify the process of the terminal for executing the DMRS function, and further reduce DMRS overhead.

Furthermore, no matter the subframe mainly includes downlink services or uplink services, the first frequency domain density in the first-stage configuration parameter and the second frequency domain density in the second-stage configuration parameter have intersection. For example, the first configuration level and the second configuration level both include a control channel demodulation function, and the frequency domain density corresponding to the control channel demodulation function in the second-stage configuration parameter may be directly adopted, so as to further simplify the process of the terminal performing the DMRS function, and further reduce DMRS overhead.

Therefore, as can be seen from the above description, in both the subframe with the following business as the main frame and the subframe with the uplink business as the main frame, the parameter corresponding to a certain DMRS function in the first-stage configuration parameter may be multiplexed into the parameter corresponding to the certain DMRS function in the second-stage configuration parameter.

In summary, in the embodiment of the present invention, the terminal receives the first-stage configuration parameter and the second-stage configuration parameter sent by the network side device in the following subframe in which the business is dominant and the subframe in which the uplink business is dominant, respectively, and executes the DMRS function corresponding to each configuration parameter. The configuration parameters are dynamically configured by the network side equipment according to different function requirements of the DMRS, so that the terminal can execute the corresponding DMRS function by using the resources determined by the configuration parameters, thereby reducing the DMRS overhead, effectively solving the problems that the DMRS overhead is large, the system spectrum efficiency is low and the channel characteristics cannot be accurately estimated in a 5G system, further improving the transmission effectiveness and reliability, and improving the cell average transmission rate and the edge user transmission rate.

Fifth embodiment

The embodiment of the present invention provides a network side device, which may be a base station, an evolved node, a transceiver node, or the like, but is not limited to these devices.

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

a class configuration module 121, configured to divide at least one DMRS function that a terminal needs to execute into at least one configuration class;

a parameter configuration module 122, configured to determine a configuration parameter of the DMRS function included in each of the configuration levels, and send the configuration parameter to the terminal, where the configuration parameter is used for executing the DMRS function according to the configuration parameter after the terminal receives the configuration parameter.

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

a first configuration unit 1221, configured to determine, in a subframe where downlink services are mainly used, a first-stage configuration parameter of a DMRS function included in the first configuration stage, and send the first-stage configuration parameter to the terminal; in a subframe with a main downlink service, 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.

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

a second configuring unit 1222, configured to determine, in a subframe where downlink service is dominant, a second-stage configuration parameter of a DMRS function included in the second configuration level, and send the second-stage configuration parameter to the terminal; in a subframe with a downlink service as a main component, 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.

a third configuration unit 1223, configured to determine, in a subframe where an uplink service is mainly used, a first-stage configuration parameter of a DMRS function included in the first configuration stage, and send the first-stage configuration parameter to the terminal; in a subframe with uplink service as a main part, the DMRS function in the first configuration level includes: at least one of a control channel demodulation function, an indication terminal to send a traffic channel DMRS function and an indication terminal to send a control channel DMRS function.

Preferably, the parameter configuration module 122 further includes:

a fourth configuring unit 1224, configured to determine, in a subframe in which an uplink service is dominant, a second-stage configuration parameter of a DMRS function included in the second configuration level, and send the second-stage configuration parameter to the terminal; in a subframe with uplink service as a main component, the DMRS function in the second configuration level includes: at least one of a control channel demodulation function, an indication terminal to send a traffic channel DMRS function and an indication terminal to send a control channel DMRS function.

Preferably, the first stage configuration parameters include at least one of an identification of a 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 a second antenna port group, a second time domain density, and a second frequency domain density.

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

Preferably, the first time domain density intersects the second time domain density.

Preferably, the first frequency-domain density intersects the second frequency-domain density.

Preferably, when the first configuration unit 1221 sends the first-level configuration parameter to the terminal, the first configuration unit is specifically configured to: and sending the first-stage configuration parameters to the terminal through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer.

Preferably, when the third configuration unit 1223 sends the first-level configuration parameter to the terminal, it is specifically configured to: and sending the first-stage configuration parameters to the terminal through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer.

Preferably, when the second configuration unit 1222 sends the second-level configuration parameters to the terminal, it is specifically configured to: sending the second-level configuration parameters to the terminal through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer; or sending part of the second-stage configuration parameters and the first-stage configuration parameters to the terminal through at least one of broadcast messages, radio resource control signaling, a control unit of a media access layer and physical layer control message instructions, and sending the rest of the second-stage configuration parameters to the terminal through physical layer downlink control information. The other parameters in the second-stage configuration parameters are parameters except for a part of the second-stage configuration parameters which are sent to the terminal together with the first-stage configuration parameters.

Preferably, the fourth configuration unit 1224, when sending the second-level configuration parameter to the terminal, is specifically configured to: sending the second-level configuration parameters to the terminal through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer; or sending part of the second-stage configuration parameters and the first-stage configuration parameters to the terminal through at least one of broadcast messages, radio resource control signaling, a control unit of a media access layer and physical layer control message instructions, and sending the rest of the second-stage configuration parameters to the terminal through physical layer downlink control information. The other parameters in the second-stage configuration parameters are parameters except for a part of the second-stage configuration parameters which are sent to the terminal together with the first-stage configuration parameters.

As can be seen from the above description, in the network-side device 120 according to the embodiment of the present invention, the level configuration module 121 divides at least one DMRS function that needs to be executed by the terminal into at least one configuration level, so as to trigger the parameter configuration module 122 to determine the configuration parameter of the DMRS function included in each configuration level, and send the determined configuration parameter to the terminal, so that the terminal can execute the corresponding DMRS function according to the configuration parameter after receiving the configuration parameter. Therefore, the network side equipment of the embodiment of the invention can dynamically configure the parameter data corresponding to each DMRS function for the terminal according to different function requirements of the DMRS and the configuration level of each DMRS function, thereby reducing the DMRS overhead, effectively solving the problems that the DMRS overhead is large, the system spectrum efficiency is low and the channel characteristics cannot be accurately estimated in a 5G system, further improving the transmission effectiveness and reliability, and improving the average transmission rate of a 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 (PDA), or a vehicle-mounted computer, but is not limited to these devices. As shown in fig. 14, the terminal 140 includes:

a function executing 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; the configuration parameters comprise configuration parameters of at least one configuration level, and each configuration parameter of the configuration level corresponds to at least one DMRS function.

Preferably, the configuration levels comprise a first configuration level and a second configuration level; as shown in fig. 15, the function execution module 141 includes: a first executing unit 1411, configured to receive, in a subframe where downlink traffic is dominant, a first-stage configuration parameter sent by the network-side device, and execute a DMRS function corresponding to the first-stage configuration parameter; in a subframe with a main downlink service, the DMRS function corresponding to the first-stage 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, as shown in fig. 15, the function executing module 141 further includes: a second executing unit 1412, configured to receive, in a subframe where downlink traffic is dominant, a second-stage configuration parameter sent by the network-side device, and execute a DMRS function corresponding to the second-stage configuration parameter; in the subframe with the downlink service as the main part, the DMRS function corresponding to the second-stage 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, the configuration levels comprise a first configuration level and a second configuration level; as shown in fig. 15, the function execution module 141 includes: a third executing unit 1413, configured to receive, in a subframe where an uplink service is mainly used, a first-stage configuration parameter sent by the network side device, and execute a DMRS function corresponding to the first-stage configuration parameter; in a subframe with an uplink service as a main part, the DMRS function corresponding to the first-stage configuration parameter comprises: at least one of a control channel demodulation function, an indication terminal to send a traffic channel DMRS function and an indication terminal to send a control channel DMRS function.

Preferably, as shown in fig. 15, the function executing module 141 further includes: a fourth executing unit 1414, configured to receive, in a subframe where an uplink service is dominant, a second-stage configuration parameter sent by the network-side device, and execute a DMRS function corresponding to the second-stage configuration parameter; in the subframe with the uplink service as the main part, the DMRS function corresponding to the second-stage configuration parameter includes: at least one of a control channel demodulation function, an indication terminal to send a traffic channel DMRS function and an indication terminal to send a control channel DMRS function.

Preferably, when receiving the first-level configuration parameter sent by the network-side device, the first execution unit 1411 is specifically configured to: and receiving the first-stage configuration parameters sent by the network side equipment through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer.

Preferably, when receiving the first-level configuration parameter sent by the network-side device, the third executing unit 1413 is specifically configured to: and receiving the first-stage configuration parameters sent by the network side equipment through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer.

Preferably, when receiving the second-level configuration parameter sent by the network-side device, the second executing unit 1412 is specifically configured to: receiving a second-level configuration parameter sent by the network side equipment through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer; or receiving the first-stage configuration parameters and part of the second-stage configuration parameters sent by the network side equipment through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a physical layer control message indication, and receiving the rest parameters in the second-stage configuration parameters sent by the network side equipment through physical layer downlink control information. The other parameters in the second-stage configuration parameters are parameters except for a part of the second-stage configuration parameters which are sent to the terminal together with the first-stage configuration parameters.

Preferably, when receiving the second-stage configuration parameters sent by the network-side device, the fourth execution unit 1414 is specifically configured to: receiving a second-level configuration parameter sent by the network side equipment through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer; or receiving the first-stage configuration parameters and part of the second-stage configuration parameters sent by the network side equipment through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a physical layer control message indication, and receiving the rest parameters in the second-stage configuration parameters sent by the network side equipment through physical layer downlink control information. The other parameters in the second-stage configuration parameters are parameters except for a part of the second-stage configuration parameters which are sent to the terminal together with the first-stage configuration parameters.

As can be seen from the above, the terminal 140 according to the embodiment of the present invention receives the configuration parameters transmitted 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. The configuration parameters are dynamically configured by the network side equipment according to different function requirements of the DMRS, so that the terminal can execute the corresponding DMRS function by using the resources determined by the configuration parameters, thereby reducing the DMRS overhead, effectively solving the problems that the DMRS overhead is large, the system spectrum efficiency is low and the channel characteristics cannot be accurately estimated in a 5G system, further improving the transmission effectiveness and reliability, and improving the cell average transmission rate and the edge user transmission rate.

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 (PDA), or an in-vehicle computer.

The terminal 1600 shown in fig. 16 includes: at least one processor 1601, memory 1602, at least one network interface 1604, other user interfaces 1603. The various components in terminal 1600 are coupled together by a bus system 1605. It is understood that the bus system 1605 is used to enable connected communication between these components. The bus system 1605 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration the various buses are labeled in figure 16 as bus system 1605.

User interface 1603 may include, among other things, a display, a keyboard, or a pointing device. Such as a mouse, trackball (trackball), touch pad or touch screen, etc.

It is to be understood that the memory 1602 in embodiments of the present invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double data rate Synchronous Dynamic random access memory (ddr DRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 1602 of the systems and methods described herein is intended to comprise, without being 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 a subset thereof, or an expanded set thereof: an operating system 16021 and application programs 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 16022 includes various applications, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. Programs that implement methods in accordance with embodiments of the present invention may be included within application 16022.

In the embodiment of the present invention, the program or the instruction stored in the memory 1602 is called, and specifically, may be a program or an instruction stored in the application 16022. The processor 1601 is 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; the configuration parameters comprise configuration parameters of at least one configuration level, and each configuration parameter of the configuration level corresponds to at least one DMRS function.

The method disclosed by the above-mentioned 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 capabilities. In implementation, the steps of the method may be performed by hardware integrated logic circuits or instructions in software form in the processor 1601. The Processor 1601 may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable Gate Array (FPGA) or other programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. 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 connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1602, and the processor 1601 reads information in the memory 1602, and performs the steps of the method in combination with hardware thereof.

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

Preferably, the configuration levels comprise a first configuration level and a second configuration level; when receiving the configuration parameter sent by the network side device and executing the DMRS function corresponding to the configuration parameter according to the configuration parameter, the processor 1601 is specifically configured to: in a subframe with a main downlink service, receiving a first-stage configuration parameter sent by the network side equipment, and executing a DMRS function corresponding to the first-stage configuration parameter; in a subframe with a main downlink service, the DMRS function corresponding to the first-stage 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, the processor 1601 is further configured to, when 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: receiving a second-stage configuration parameter sent by the network side equipment in a subframe with a main downlink service, and executing a DMRS function corresponding to the second-stage configuration parameter; in the subframe with the downlink service as the main part, the DMRS function corresponding to the second-stage 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, the configuration levels comprise a first configuration level and a second configuration level; the processor 1601 is configured to, when 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,: receiving a first-stage configuration parameter sent by the network side equipment in a subframe with an uplink service as a main part, and executing a DMRS function corresponding to the first-stage configuration parameter; in a subframe with an uplink service as a main part, the DMRS function corresponding to the first-stage configuration parameter comprises: at least one of a control channel demodulation function, an indication terminal to send a traffic channel DMRS function and an indication terminal to send a control channel DMRS function.

Preferably, the processor 1601 is further configured to, when 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: receiving a second-stage configuration parameter sent by the network side equipment in a subframe with an uplink service as a main part, and executing a DMRS function corresponding to the second-stage configuration parameter; in the subframe with the uplink service as the main part, the DMRS function corresponding to the second-stage configuration parameter includes: at least one of a control channel demodulation function, an indication terminal to send a traffic channel DMRS function and an indication terminal to send a control channel DMRS function.

Preferably, when receiving the first-stage configuration parameter sent by the network-side device, the processor 1601 is specifically configured to: and receiving the first-stage configuration parameters sent by the network side equipment through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer.

Preferably, when receiving the second-stage configuration parameter sent by the network-side device, the processor 1601 is specifically configured to: receiving a second-level configuration parameter sent by the network side equipment through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer; or receiving the first-stage configuration parameters and part of the second-stage configuration parameters sent by the network side equipment through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a physical layer control message indication, and receiving the rest parameters in the second-stage configuration parameters sent by the network side equipment through physical layer downlink control information.

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

The terminal 1600 of the embodiment of the present invention can receive the configuration parameters sent by the network side device, and execute the DMRS function corresponding to the configuration parameters according to the configuration parameters. Because the configuration parameters are dynamically configured by the network side device according to different function requirements of the DMRS, the terminal 1600 can execute the corresponding DMRS function by using the resource determined by the configuration parameters, thereby reducing DMRS overhead, effectively solving the problems of large DMRS overhead, low system spectrum efficiency and incapability of accurately estimating channel characteristics in a 5G system, further improving transmission effectiveness and reliability, and improving the cell average transmission rate and the edge user transmission rate.

Eighth embodiment

Referring to fig. 17, fig. 17 is a structural diagram of a network side device applied in the embodiment of the present invention, which can implement details of the data transmission method in the first embodiment to the second embodiment, and achieve the same effect. The network device may be a base station, an evolved node, a transceiver node, or the like, 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 configured to read a program in the memory 1703 and execute the following processes:

determining the configuration parameters of the DMRS function included in each of the configuration levels, and then controlling the transceiver 1702 to transmit the configuration parameters to the terminal, where the configuration parameters are used for executing the DMRS function according to the configuration parameters after the terminal receives the configuration parameters.

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

The processor 1701 is responsible for managing a 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 is specifically configured to, when determining the configuration parameters of the DMRS functions included in each of the configuration levels and transmitting the configuration parameters to the terminal: in a subframe with a main downlink service, determining a first-stage configuration parameter of a DMRS function included in the first configuration level, and sending the first-stage configuration parameter to the terminal; in a subframe with a main downlink service, 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.

Preferably, the processor 1701, when determining the configuration parameters of the DMRS functions included in each of the configuration levels and transmitting the configuration parameters to the terminal, is further configured to: in a subframe with a main downlink service, determining a second-stage configuration parameter of a DMRS function included in the second configuration level, and sending the second-stage configuration parameter to the terminal; in a subframe with a downlink service as a main component, 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 levels include a first configuration level and a second configuration level, and the processor 1701 is specifically configured to, when determining the configuration parameters of the DMRS functions included in each of the configuration levels and transmitting the configuration parameters to the terminal: in a subframe with uplink service as a main part, determining a first-stage configuration parameter of a DMRS function included in the first configuration level, and sending the first-stage configuration parameter to the terminal; in a subframe with uplink service as a main part, the DMRS function in the first configuration level includes: at least one of a control channel demodulation function, an indication terminal to send a traffic channel DMRS function and an indication terminal to send a control channel DMRS function.

Preferably, the processor 1701, when determining the configuration parameters of the DMRS functions included in each of the configuration levels and transmitting the configuration parameters to the terminal, is further configured to: in a subframe with uplink service as a main part, determining a second-stage configuration parameter of a DMRS function included in the second configuration level, and sending the second-stage configuration parameter to the terminal; in a subframe with uplink service as a main component, the DMRS function in the second configuration level includes: at least one of a control channel demodulation function, an indication terminal to send a traffic channel DMRS function and an indication terminal to send a control channel DMRS function.

Preferably, when the transceiver 1702 sends the first-stage configuration parameters to the terminal, the transceiver is specifically configured to: and sending the first-stage configuration parameters to the terminal through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer.

Preferably, when the transceiver 1702 sends the second-stage configuration parameters to the terminal, it is specifically configured to: sending the second-level configuration parameters to the terminal through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer; or sending part of the second-stage configuration parameters and the first-stage configuration parameters to the terminal through at least one of broadcast messages, radio resource control signaling, a control unit of a media access layer and physical layer control message instructions, and sending the rest of the second-stage configuration parameters to the terminal through physical layer downlink control information.

In this way, the network-side device 1700 divides at least one DMRS function that the terminal needs to execute into at least one configuration level, and determines a configuration parameter of a DMRS function included in each configuration level, so as to send the determined configuration parameter to the terminal, so that the terminal can execute a corresponding DMRS function according to the configuration parameter after receiving the configuration parameter. Therefore, according to different function requirements of the DMRS and the configuration levels of the DMRS functions, the embodiment of the invention can dynamically configure the parameter data corresponding to the DMRS functions for the terminal, thereby reducing the DMRS overhead, effectively solving the problems that the DMRS overhead is large, the system spectrum efficiency is low and the channel characteristics cannot be accurately estimated in a 5G system, further improving the transmission effectiveness and reliability, and improving the average transmission rate of a cell and the transmission rate of edge users.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the effect of the scheme of the embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for configuring DMRS parameters of demodulation reference signals is applied to network side equipment, and is characterized in that the method comprises the following steps:

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;

in a subframe mainly based on downlink traffic, the DMRS function included in each of the configuration levels 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;

in the above business dominated subframes, the DMRS functions included in each of the configuration levels include: at least one of a control channel demodulation function, an indication terminal sending service channel DMRS function and an indication terminal sending control channel DMRS function;

the configuration parameters corresponding to the DMRS function include: at least one of an antenna port group identification, a time domain density, and a frequency domain density;

wherein the antenna port group identification indicates time-frequency resources occupied by a group of antenna ports; the time domain density indicates the proportion of a certain antenna port group occupying a time domain symbol in a transmission time interval; the frequency domain density indicates the proportion of frequency domain subcarriers occupied by a certain antenna port group in a partial bandwidth or a full bandwidth or a sub-band.

2. 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 transmitting the configuration parameters to the terminal includes:

in a subframe with a main downlink service, determining a first-stage configuration parameter of a DMRS function included in the first configuration level, and sending the first-stage configuration parameter to the terminal;

in a subframe with a main downlink service, 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.

3. The method of claim 2, wherein the step of determining configuration parameters for the DMRS function included in each of the configuration levels and transmitting the configuration parameters to the terminal further comprises:

in a subframe with a main downlink service, determining a second-stage configuration parameter of a DMRS function included in the second configuration level, and sending the second-stage configuration parameter to the terminal;

in a subframe with a downlink service as a main component, 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;

in a subframe with uplink service as a main part, determining a first-stage configuration parameter of a DMRS function included in the first configuration level, and sending the first-stage configuration parameter to the terminal;

in a subframe with uplink service as a main part, the DMRS function in the first configuration level includes: at least one of a control channel demodulation function, an indication terminal to send a traffic channel DMRS function and an indication terminal to send a control channel DMRS function.

5. The method of claim 4, wherein the step of determining configuration parameters for the DMRS functions included in each of the configuration levels and transmitting the configuration parameters to the terminal further comprises:

in a subframe with uplink service as a main part, determining a second-stage configuration parameter of a DMRS function included in the second configuration level, and sending the second-stage configuration parameter to the terminal;

in a subframe with uplink service as a main component, the DMRS function in the second configuration level includes: at least one of a control channel demodulation function, an indication terminal to send a traffic channel DMRS function and an indication terminal to send a control channel DMRS function.

6. The method according to claim 3 or 5,

the first-stage configuration parameters comprise at least one of an identification of a 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 a 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 time domain density intersects the second time domain density.

9. The method of claim 6, wherein the first frequency-domain density intersects the second frequency-domain density.

10. The method according to claim 2 or 4, wherein the step of sending the first-level configuration parameters to the terminal comprises:

and sending the first-stage configuration parameters to the terminal through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer.

11. The method according to claim 3 or 5, wherein the step of sending the second-level configuration parameters to the terminal comprises:

sending the second-level configuration parameters to the terminal through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer; or

And sending part of the second-stage configuration parameters and the first-stage configuration parameters to the terminal together through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a physical layer control message indication, and sending the rest of the second-stage configuration parameters to the terminal through physical layer downlink control information.

12. A method for configuring DMRS parameters of demodulation reference signals is applied to a terminal, and is characterized by comprising the following steps:

the configuration parameters comprise configuration parameters of at least one configuration level, and each configuration parameter of the configuration level corresponds to at least one DMRS function;

13. The method of claim 12, wherein the configuration levels comprise a first configuration level and a second configuration level;

the step of receiving the configuration parameters sent by the network side equipment and executing the DMRS function corresponding to the configuration parameters according to the configuration parameters comprises the following steps:

in a subframe with a main downlink service, receiving a first-stage configuration parameter sent by the network side equipment, and executing a DMRS function corresponding to the first-stage configuration parameter;

in a subframe with a main downlink service, the DMRS function corresponding to the first-stage 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.

14. The method according to claim 13, wherein the step of receiving the configuration parameter sent by the network side device and performing the DMRS function corresponding to the configuration parameter according to the configuration parameter further comprises:

receiving a second-stage configuration parameter sent by the network side equipment in a subframe with a main downlink service, and executing a DMRS function corresponding to the second-stage configuration parameter;

in the subframe with the downlink service as the main part, the DMRS function corresponding to the second-stage configuration parameter 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 comprise a first configuration level and a second configuration level;

receiving a first-stage configuration parameter sent by the network side equipment in a subframe with an uplink service as a main part, and executing a DMRS function corresponding to the first-stage configuration parameter;

in a subframe with an uplink service as a main part, the DMRS function corresponding to the first-stage configuration parameter comprises: at least one of a control channel demodulation function, an indication terminal to send a traffic channel DMRS function and an indication terminal to send a control channel DMRS function.

16. The method according to claim 15, wherein the step of receiving the configuration parameter sent by the network side device and performing the DMRS function corresponding to the configuration parameter according to the configuration parameter further comprises:

receiving a second-stage configuration parameter sent by the network side equipment in a subframe with an uplink service as a main part, and executing a DMRS function corresponding to the second-stage configuration parameter;

in the subframe with the uplink service as the main part, the DMRS function corresponding to the second-stage configuration parameter includes: at least one of a control channel demodulation function, an indication terminal to send a traffic channel DMRS function and an indication terminal to send a control channel DMRS function.

17. The method according to claim 14 or 16,

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 time domain density intersects the second time domain density.

20. The method of claim 17, wherein the first frequency-domain density intersects the second frequency-domain density.

21. The method according to claim 13 or 15, wherein the step of receiving the first-stage configuration parameters sent by the network-side device includes:

and receiving the first-stage configuration parameters sent by the network side equipment through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer.

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 includes:

receiving a second-level configuration parameter sent by the network side equipment through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer; or

Receiving a first-stage configuration parameter and a part of a second-stage configuration parameter sent by the network side equipment through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a physical layer control message indication, and receiving the rest parameters in the second-stage configuration parameter sent by the network side equipment through physical layer downlink control information.

23. A network-side device, comprising:

a parameter configuration module, configured to determine a configuration parameter of the DMRS function included in each of the configuration levels, and send the configuration parameter to the terminal, where the configuration parameter is used for executing the DMRS function according to the configuration parameter after the terminal receives the configuration parameter;

24. The network-side device of claim 23, wherein the configuration levels comprise a first configuration level and a second configuration level;

the parameter configuration module comprises:

a first configuration unit, configured to determine, in a subframe where downlink services are dominant, a first-stage configuration parameter of a DMRS function included in the first configuration stage, and send the first-stage configuration parameter to the terminal;

25. The network-side device of claim 24, wherein the parameter configuration module further comprises:

a second configuration unit, configured to determine, in a subframe where downlink services are dominant, a second-stage configuration parameter of a DMRS function included in the second configuration level, and send the second-stage configuration parameter to the terminal;

26. The network-side device of claim 23, wherein the configuration levels comprise a first configuration level and a second configuration level;

the parameter configuration module comprises:

a third configuration unit, configured to determine, in a subframe where an uplink service is dominant, a first-stage configuration parameter of a DMRS function included in the first configuration stage, and send the first-stage configuration parameter to the terminal;

27. The network-side device of claim 26, wherein the parameter configuration module further comprises:

a fourth configuration unit, configured to determine, in a subframe where an uplink service is dominant, a second-stage configuration parameter of a DMRS function included in the second configuration level, and send the second-stage configuration parameter to the terminal;

28. The network-side device of claim 25 or 27,

29. The network-side device of claim 28, wherein the second antenna port group is a subset of the first antenna port group.

30. The network-side device of claim 28, wherein the first time domain density intersects the second time domain density.

31. The network-side device of claim 28, wherein the first frequency-domain density intersects the second frequency-domain density.

32. The network-side device of claim 24, wherein the first configuration unit, when sending the first-level configuration parameter to the terminal, is specifically configured to: and sending the first-stage configuration parameters to the terminal through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer.

33. The network-side device of claim 26, wherein, when sending the first-level configuration parameter to the terminal, the third configuration unit is specifically configured to: and sending the first-stage configuration parameters to the terminal through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer.

34. The network-side device of claim 25, wherein the second configuration unit, when sending the second-level configuration parameter to the terminal, is specifically configured to:

35. The network-side device of claim 27, wherein, when sending the second-level configuration parameter to the terminal, the fourth configuration unit is specifically configured to:

36. A terminal, comprising:

37. The terminal of claim 36, wherein the configuration levels comprise a first configuration level and a second configuration level;

the function execution module includes:

a first execution unit, configured to receive, in a subframe where downlink services are dominant, a first-stage configuration parameter sent by the network-side device, and execute a DMRS function corresponding to the first-stage configuration parameter;

38. The terminal of claim 37, wherein the function execution module further comprises:

a second execution unit, configured to receive, in a subframe where downlink traffic is dominant, a second-stage configuration parameter sent by the network-side device, and execute a DMRS function corresponding to the second-stage configuration parameter;

in the subframe with the downlink service as the main part, the DMRS function corresponding to the second-stage 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.

39. The terminal of claim 36, wherein the configuration levels comprise a first configuration level and a second configuration level;

the function execution module includes:

a third executing unit, configured to receive, in a subframe where an uplink service is dominant, a first-stage configuration parameter sent by the network-side device, and execute a DMRS function corresponding to the first-stage configuration parameter;

40. The terminal of claim 39, wherein the function execution module further comprises:

a fourth executing unit, configured to receive, in a subframe where an uplink service is mainly used, a second-stage configuration parameter sent by the network side device, and execute a DMRS function corresponding to the second-stage configuration parameter;

41. A terminal according to claim 38 or 40,

42. The terminal of claim 41, wherein the second antenna port group is a subset of the first antenna port group.

43. The terminal of claim 41, wherein the first time domain density intersects the second time domain density.

44. The terminal of claim 41, wherein the first frequency-domain density intersects the second frequency-domain density.

45. The terminal according to claim 37, wherein the first execution unit, when receiving the first-stage configuration parameter sent by the network-side device, is specifically configured to: and receiving the first-stage configuration parameters sent by the network side equipment through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer.

46. The terminal according to claim 39, wherein the third executing unit, when receiving the first-stage configuration parameter sent by the network-side device, is specifically configured to: and receiving the first-stage configuration parameters sent by the network side equipment through at least one of a broadcast message, a radio resource control signaling, a control unit of a media access layer and a control message indication of a physical layer.

47. The terminal according to claim 38, wherein when the second execution unit receives the second-level configuration parameter sent by the network-side device, the second execution unit is specifically configured to:

48. The terminal according to claim 40, wherein the fourth executing unit, when receiving the second-stage configuration parameter sent by the network-side device, is specifically configured to: