CN112448802B - Configuration method of demodulation reference signal, terminal and base station - Google Patents

Abstract

A method for configuring a demodulation reference signal, a terminal, and a base station. The method for configuring a demodulation reference signal, a terminal, and a base station provided in an embodiment of the present invention report the capability of the DMRS type supported by the terminal, and the network side network according to the capability of the terminal and wireless environment and other factors, adaptively configure the DMRS type of the terminal, so as to improve network performance and optimize center and edge user experience.

Description

Demodulation reference signal configuration method, terminal and base station

technical field

The present invention relates to the technical field of mobile communication, in particular to a demodulation reference signal (DMRS, DemodulationReference signal) configuration method, terminal and base station.

Background technique

In a digital communication system, the demodulation of data depends on the estimation of the channel by DMRS. The resource occupied by the DMRS in a physical resource block is configurable, and is usually represented by a DMRS pattern. In a cyclic prefix-based Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) system, the DMRS pattern generally includes a pre-DMRS and one or more additional DMRSs. And the combination of pre-DMRS and additional DMRS in uplink configuration.

Figure 1 shows the type of DMRS including only one pre-DMRS. In one physical resource block shown in Figure 1, there are 14 symbols in one time slot, in which the control region occupies the first two symbols, and the third symbol is A pre-DMRS.

Figure 2 shows the type of DMRS including 1 pre-DMRS and 1 additional DMRS. In a physical resource block shown in Figure 1, there are 14 symbols in 1 time slot, of which the control region occupies the first 2 symbols. 3 symbols are a pre-DMRS.

For ease of description, the DMRS type including only one pre-DMRS is referred to as 1+0, and the DMRS type including one pre-DMRS and n additional DMRSs is referred to as 1+n.

The existing technology requires that the user equipment (UE) must support a DMRS type including only 1 pre-DMRS (Fig. 1), and a DMRS type including 1 pre-DMRS and 1 additional DMRS (Fig. 2). Therefore, the UE capability reporting message (UECapabilityInformation) in the prior art does not include the above two DMRS types.

Even if the existing technology has the above requirements, due to limited industrial capabilities, not all terminals can support the above two DMRS types. For example, Qualcomm currently only supports 1+1, not 1+0. Therefore, the DMRS configuration method in the prior art may fail to perform adaptive configuration according to the actual capability of the terminal because the network and the terminal side have inconsistent understanding of the capability of the terminal.

Contents of the invention

At least one embodiment of the present invention provides a demodulation reference signal configuration method, a terminal and a network device, which can perform adaptive DMRS configuration on the terminal according to the actual capability of the terminal.

According to another aspect of the present invention, at least one embodiment provides a method for configuring a demodulation reference signal, which is applied to a base station, including:

receiving a capability report message sent by the terminal, where the capability report message is at least used to indicate whether the terminal supports a first DMRS type, where the first DMRS type is a DMRS type including 1 pre-DMRS and 0 additional DMRS;

Determine the target DMRS type adopted by the terminal according to the capability report message;

Sending a DMRS configuration message carrying the target DMRS type to the terminal.

Optionally, the capability report message carries a first information element, and the first information element is used to indicate whether the terminal supports the first DMRS type; or,

The capability report message carries or does not carry a second information element, wherein, when the second information element is carried, it means that the terminal supports the first DMRS type; when the second information element is not carried, it means that the terminal The first DMRS type is not supported.

Optionally, the capability report message is also used to indicate the additional DMRS type supported by the terminal, and the additional DMRS type includes one pre-DMRS and at least one additional DMRS.

Optionally, according to the capability report message, the step of determining the target DMRS type adopted by the terminal includes:

Obtain the motion state of the terminal;

When the motion state indicates that the terminal is in a preset high-speed motion state, determine that the target DMRS type adopted by the terminal is the second DMRS type;

When the motion state indicates that the terminal is not in the high-speed motion state, acquire a received signal strength parameter of the terminal;

When the received signal strength parameter is not greater than a preset threshold, determine that the target DMRS type adopted by the terminal is a third DMRS type;

When the received signal strength parameter is greater than a preset threshold, determine that the target DMRS type adopted by the terminal is a fourth DMRS type;

Wherein, the second DMRS type, the third DMRS type and the fourth DMRS type are all DMRS types supported by the terminal, and the additional DMRS contained in the second DMRS type is no less than that contained in the third DMRS type An additional DMRS, where the additional DMRS included in the third DMRS type is no less than the additional DMRS included in the fourth DMRS type.

Optionally, before receiving the capability report message sent by the terminal, it also includes:

Send a capability query message to the terminal.

The embodiment of the present invention also provides a method for configuring a demodulation reference signal DMRS, which is applied to a terminal, including:

Send a capability report message to the base station, where the capability report message is at least used to indicate whether the terminal supports a first DMRS type, where the first DMRS type is a DMRS configuration with 1 pre-DMRS and 0 additional DMRS;

receiving the DMRS configuration information delivered by the base station according to the capability report message, and configuring the DMRS type adopted by the terminal according to the DMRS configuration information.

Optionally, the capability report message carries a first information element, and the first information element is used to indicate whether the terminal supports the first DMRS type; or,

The capability report message carries or does not carry a second information element, wherein, when the second information element is carried, it means that the terminal supports the first DMRS type; when the second information element is not carried, it means that the terminal The first DMRS type is not supported.

Optionally, the capability report message is also used to indicate the additional DMRS type supported by the terminal, and the additional DMRS type includes one pre-DMRS and at least one additional DMRS.

Optionally, before sending the capability report message, further include:

Receive a capability query message sent by the base station.

The embodiment of the present invention also provides a base station, including:

A receiving module, configured to receive a capability report message sent by the terminal, where the capability report message is at least used to indicate whether the terminal supports a first DMRS type, and the first DMRS type includes 1 pre-DMRS and 0 additional DMRS DMRS type;

A determining module, configured to determine the target DMRS type adopted by the terminal according to the capability report message;

A sending module, configured to send a DMRS configuration message carrying the target DMRS type to the terminal.

An embodiment of the present invention also provides a base station, including a transceiver and a processor, wherein,

The transceiver is configured to receive a capability report message sent by a terminal, where the capability report message is at least used to indicate whether the terminal supports a first DMRS type, and the first DMRS type includes 1 pre-DMRS and 0 DMRS type of additional DMRS;

The processor is configured to determine the target DMRS type adopted by the terminal according to the capability report message;

The transceiver is further configured to send a DMRS configuration message carrying the target DMRS type to the terminal.

An embodiment of the present invention also provides a base station, including: a processor, a memory, and a program stored in the memory and operable on the processor. When the program is executed by the processor, the above-mentioned The steps of the method for configuring the demodulation reference signal DMRS.

The embodiment of the present invention also provides a terminal, including:

A sending module, configured to send a capability report message to the base station, where the capability report message is at least used to indicate whether the terminal supports a first DMRS type, and the first DMRS type is a DMRS with 1 pre-DMRS and 0 additional DMRS configuration;

A configuration module, configured to receive DMRS configuration information sent by the base station according to the capability report message, and configure the DMRS type adopted by the terminal according to the DMRS configuration information.

An embodiment of the present invention also provides a terminal, including a transceiver and a processor, wherein,

The transceiver is configured to send a capability report message to the base station, where the capability report message is at least used to indicate whether the terminal supports a first DMRS type, and the first DMRS type is 1 pre-DMRS and 0 additional DMRS DMRS configuration; and, receiving DMRS configuration information issued by the base station according to the capability report message;

The processor is configured to configure the DMRS type adopted by the terminal according to the DMRS configuration information.

An embodiment of the present invention also provides a terminal, including: a processor, a memory, and a program stored on the memory and operable on the processor. When the program is executed by the processor, the above-mentioned The steps of the method for configuring the demodulation reference signal DMRS.

According to another aspect of the present invention, at least one embodiment provides a computer-readable storage medium, where a program is stored on the computer-readable storage medium, and when the program is executed by a processor, the above method is implemented. step.

Compared with the prior art, the demodulation reference signal configuration method, the terminal and the base station provided by the embodiment of the present invention report the capability of the DMRS type supported by the terminal, and the network side network automatically determines the Adaptive configuration of the DMRS type of the terminal can improve network performance and optimize center and edge user experience.

Description of drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiment. The drawings are only for the purpose of illustrating a preferred embodiment and are not to be considered as limiting the invention. Also throughout the drawings, the same reference numerals are used to designate the same parts. In the attached picture:

FIG. 1 is a schematic diagram of a type of DMRS involved in an embodiment of the present invention;

FIG. 2 is a schematic diagram of another DMRS type involved in the embodiment of the present invention;

FIG. 3 is a schematic diagram of an application scenario according to an embodiment of the present invention;

FIG. 4 is a flow chart when the demodulation reference signal configuration method provided by the embodiment of the present invention is applied to the base station side;

FIG. 5 is a flow chart when the demodulation reference signal configuration method provided by the embodiment of the present invention is applied to the terminal side;

FIG. 6 is an example diagram of an interaction process of a demodulation reference signal configuration method provided by an embodiment of the present invention;

FIG. 7 is an example diagram of another interaction process of a demodulation reference signal configuration method provided by an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a base station provided by an embodiment of the present invention;

FIG. 9 is another schematic structural diagram of a base station provided by an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a terminal provided by an embodiment of the present invention;

FIG. 11 is another schematic structural diagram of a terminal provided by an embodiment of the present invention.

Detailed ways

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein, for example, can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the expressly listed instead, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus. "And/or" in the specification and claims means at least one of the connected objects.

The technology described herein is not limited to the NR system and the evolution (LTE-Advanced, LTE-A) system of the Long Time Evolution (Long Time Evolution, LTE)/LTE, and can also be used in various wireless communication systems, such as Code Division Multiple Access (Code Division Multiple Access, CDMA), Time Division Multiple Access (Time Division Multiple Access, TDMA), Frequency Division Multiple Access (Frequency Division Multiple Access, FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" are often used interchangeably. A CDMA system may implement radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA), and the like. UTRA includes Wideband CDMA (Wideband Code Division Multiple Access, WCDMA) and other CDMA variants. A TDMA system can implement a radio technology such as Global System for Mobile Communication (GSM). The OFDMA system can realize radios such as UltraMobile Broadband (UltraMobile Broadband, UMB), Evolution-UTRA (Evolution-UTRA, E-UTRA), IEEE 802.21 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, etc. technology. UTRA and E-UTRA are part of Universal Mobile Telecommunications System (UMTS). LTE and LTE-Advanced (like LTE-A) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). CDMA2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). The techniques described herein may be used for the systems and radio technologies mentioned above as well as other systems and radio technologies. However, the following description describes NR systems for example purposes, and NR terminology is used in much of the following description, although the techniques are applicable to applications other than NR system applications as well.

The following description provides examples and does not limit the scope, applicability or configuration set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the spirit and scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the methods described may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Referring to FIG. 3 , FIG. 3 shows a block diagram of a wireless communication system to which an embodiment of the present invention is applicable. The wireless communication system includes a terminal 31 and a network device 32 . Wherein, the terminal 31 may also be called a user terminal or user equipment (UE, UserEquipment), and the terminal 31 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a personal digital assistant (Personal Digital Assistant, PDA), mobile Internet device (Mobile Internet Device, MID), wearable device (Wearable Device) or vehicle-mounted device and other terminal-side devices. It should be noted that the specific type of terminal 31 is not limited in the embodiment of the present invention. The network device 32 may be a base station and/or a core network element, wherein the above-mentioned base station may be a base station of 5G and later versions (for example: gNB, 5G NR NB, etc.), or a base station in other communication systems (for example: eNB, WLAN access point, or other access point, etc.), where a base station may be referred to as Node B, eNode B, access point, Base Transceiver Station (Base Transceiver Station, BTS), radio base station, radio transceiver, basic Service Set (Basic Service Set, BSS), Extended Service Set (Extended Service Set, ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN access point, WiFi node or all As long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary. It should be noted that in the embodiment of the present invention, only the base station in the NR system is used as an example, but it does not Specific types of base stations are defined.

The base stations may communicate with terminals 31 under the control of a base station controller, which may be part of a core network or certain base stations in various examples. Some base stations can communicate control information or user data with the core network through the backhaul. In some examples, some of these base stations may communicate with each other directly or indirectly via a backhaul link, which may be a wired or wireless communication link. A wireless communication system may support operation on multiple carriers (waveform signals of different frequencies). A multi-carrier transmitter is capable of transmitting modulated signals on the multiple carriers simultaneously. For example, each communication link may be a multi-carrier signal modulated according to various radio technologies. Each modulated signal may be sent on a different carrier and may carry control information (eg, reference signal, control channel, etc.), overhead information, data, etc.

A base station may communicate wirelessly with terminals 31 via one or more access point antennas. Each base station may provide communication coverage for a respective respective coverage area. The coverage area of an access point may be divided into sectors that constitute only a portion of the coverage area. A wireless communication system may include different types of base stations (eg, macro base stations, micro base stations, or pico base stations). The base stations may also utilize different radio technologies, such as cellular or WLAN radio access technologies. Base stations may be associated with the same or different access networks or operator deployments. Coverage areas of different base stations (including coverage areas of base stations of the same or different types, coverage areas utilizing the same or different radio technologies, or coverage areas belonging to the same or different access networks) may overlap.

A communication link in a wireless communication system may include an uplink for carrying an uplink (Uplink, UL) transmission (for example, from a terminal 31 to a network device 32), or for carrying a downlink (Downlink, DL) transmission. Downlink of transmission (eg, from network device 32 to terminal 31). UL transmissions can also be called reverse link transmissions, and DL transmissions can also be called forward link transmissions. Downlink transmissions may be performed using licensed frequency bands, unlicensed frequency bands, or both. Similarly, uplink transmissions may be performed using licensed frequency bands, unlicensed frequency bands, or both.

As mentioned in the background, although the existing technology requires terminals to support 1+0 and 1+1 DMRS types, there are cases in which some terminals do not support one or more of the DMR types in practical applications. Considering that the reference signal of 1+0 occupies less resources, the data rate is higher than that of 1+1. In the existing technology, in the initial stage of the network (when there are few high-speed scenarios), in order to accommodate low-capability terminals, DMRS types with low performance are usually uniformly configured, such as 1+1, so that high-capacity users in the center of the cell cannot enjoy a higher user experience. This slows down the performance of the entire network. However, if the unified configuration is 1+0, the performance of the cell edge users may decrease.

In order to solve at least one of the above problems, an embodiment of the present invention provides a demodulation reference signal configuration method, which can adaptively configure the DMRS type used by the terminal according to the actual capability of the terminal, which can improve network performance and optimize the cell The network experience of central and edge users.

Referring to Fig. 4, a demodulation reference signal configuration method provided by an embodiment of the present invention, when applied to the base station side, includes:

Step 41: Receive a capability report message sent by the terminal, where the capability report message is at least used to indicate whether the terminal supports a first DMRS type, and the first DMRS type is a DMRS containing 1 pre-DMRS and 0 additional DMRS type.

Here, in the embodiment of the present invention, the terminal clearly indicates in the capability report message whether it supports the first DMRS type, that is, 1+0, so as to help the base station understand the actual capability of the terminal. The capability reporting message may be reported actively by the terminal, or may be reported by the terminal according to the request of the network. At this time, before the above step 41, the base station may send a capability query message to the terminal, and then receive in step 41 A capability report message fed back by the terminal in response to the capability query message.

As an implementation manner, the terminal may carry a first information element (IE, Information Element) in the capability report message, where the first information element is used to indicate whether the terminal supports the first DMRS type. In this way, the base station can determine whether the terminal supports the first DMRS type according to the value of the first information element.

As another implementation manner, the terminal may carry or not carry a second information element in the capability report message, where the carrying of the second information element indicates that the terminal supports the first DMRS type; Carrying the second information element indicates that the terminal does not support the first DMRS type. In this way, the base station can determine whether the terminal supports the first DMRS type according to whether the capability report message includes the second information element. Of course, when the second information element is carried in the capability report message, it may indicate that the terminal does not support the first DMRS type; when the second information element is not carried, it may indicate that the terminal supports the first DMRS type, It is only required that the base station and the terminal side have the same agreement.

Step 42: Determine the target DMRS type adopted by the terminal according to the capability report message.

Here, the base station may determine the target DMRS type adopted by the terminal according to the DMRS type supported by the terminal indicated in the capability report message. The target DMRS type is a DMRS type that the terminal can support. Specifically, when determining the target DMRS type, the base station may also comprehensively make a decision according to factors such as the movement state of the terminal and the wireless environment (such as the received signal strength of the terminal).

Step 43, sending a DMRS configuration message carrying the target DMRS type to the terminal.

Here, the base station configures the terminal to use the target DMRS type to send and receive DMRS signals by sending a DMRS configuration message carrying the target DMRS type to the terminal.

Through the above steps, in the embodiment of the present invention, the terminal reports the capability of the DMRS type supported by itself, and the network side network adaptively configures the terminal DMRS type according to factors such as the terminal capability and the wireless environment, so as to improve network performance, optimize the center and Edge UX.

Considering that the terminal may support a different number of additional DMRSs, therefore, in the above step 41, the capability report message may also be used to indicate the additional DMRS type supported by the terminal, and the additional DMRS type includes 1 pre-DMRS and At least one additional DMRS. Since most terminals in the prior art currently support 1+1 DMRS type, in order to reduce information overhead, the terminal may not need to report that the terminal supports a DMRS type including 1 pre-DMRS and 1 additional DMRS. At this time, in addition to indicating whether the terminal supports the first DMRS type, the capability report message is also used to indicate the additional DMRS type supported by the terminal, and the additional DMRS type includes 1 pre-DMRS and at least Two additional DMRS.

In the above step 42, the base station can configure the DMRS type for the terminal according to the movement state of the terminal and the wireless environment and other factors. An example of specific configuration is given below. It should be noted that the following example is only used by the embodiment of the present invention. It is just an example and is not intended to limit the present invention.

Specifically, the base station may acquire the motion state of the terminal, where:

When the motion state indicates that the terminal is in a preset high-speed motion state, determine that the target DMRS type adopted by the terminal is the second DMRS type;

When the motion state indicates that the terminal is not in the high-speed motion state, acquire a received signal strength parameter of the terminal, and determine a target adopted by the terminal when the received signal strength parameter is not greater than a preset threshold The DMRS type is the third DMRS type, and when the received signal strength parameter is greater than the preset threshold, determine that the target DMRS type adopted by the terminal is the fourth DMRS type.

Here, the second DMRS type, the third DMRS type, and the fourth DMRS type are all DMRS types supported by the terminal, and the additional DMRS included in the second DMRS type is no less than that included in the third DMRS type. An additional DMRS, where the additional DMRS included in the third DMRS type is no less than the additional DMRS included in the fourth DMRS type. The second DMRS type, the third DMRS type and the fourth DMRS type may be the first DMRS type described above, or may not be other additional DMRS types.

The method for configuring the demodulation reference signal in the embodiment of the present invention is introduced above from the base station side. The following further describes from the terminal side.

Please refer to FIG. 5. When the method for configuring the demodulation reference signal DMRS provided by the embodiment of the present invention is applied to the terminal side, it includes:

Step 51: Send a capability report message to the base station, where the capability report message is at least used to indicate whether the terminal supports a first DMRS type, and the first DMRS type is a DMRS configuration with 1 pre-DMRS and 0 additional DMRS.

Here, the terminal clearly indicates in the capability report message whether it supports the first DMRS type, that is, 1+0, so as to help the base station understand the actual capability of the terminal. The capability reporting message may be reported actively by the terminal, or may be reported by the terminal according to the request of the network. At this time, before the above step 51, the terminal may receive the capability query message sent by the base station, and then in step 51, according to The capability query message feeds back a capability report message to the base station.

Similarly, as an implementation manner, the terminal may carry a first information element (IE, Information Element) in the capability report message, where the first information element is used to indicate whether the terminal supports the first DMRS type. In this way, the base station can determine whether the terminal supports the first DMRS type according to the value of the first information element.

As another implementation manner, the terminal may carry or not carry a second information element in the capability report message, where the carrying of the second information element indicates that the terminal supports the first DMRS type; Carrying the second information element indicates that the terminal does not support the first DMRS type. In this way, the base station can determine whether the terminal supports the first DMRS type according to whether the capability report message includes the second information element. Of course, when the second information element is carried in the capability report message, it may indicate that the terminal does not support the first DMRS type; when the second information element is not carried, it may indicate that the terminal supports the first DMRS type, It is only required that the base station and the terminal side have the same agreement.

Step 52: Receive the DMRS configuration information sent by the base station according to the capability report message, and configure the DMRS type adopted by the terminal according to the DMRS configuration information.

Considering that the terminal may support a different number of additional DMRS, therefore, in the above step 51, the terminal may further indicate the additional DMRS type supported by the terminal in the capability report message, and the additional DMRS type includes 1 pre-DMRS and At least one additional DMRS. Since most terminals in the prior art currently support 1+1 DMRS type, in order to reduce information overhead, the terminal may not need to report that the terminal supports a DMRS type including 1 pre-DMRS and 1 additional DMRS. At this time, in addition to indicating whether the terminal supports the first DMRS type, the capability report message is also used to indicate the additional DMRS type supported by the terminal, and the additional DMRS type includes 1 pre-DMRS and at least Two additional DMRS.

The method for configuring the demodulation reference signal in the embodiment of the present invention has been described respectively from the base station and the terminal side. The above process will be further described below through several examples.

Example 1:

Please refer to FIG. 6, an example of a demodulation reference signal configuration method provided by an embodiment of the present invention includes:

Step 61, the network sends a capability query message UECapabilityEnquiry to the terminal.

Step 62, according to its own capabilities, the terminal adds a piece of feedback information oneFL-DMRS to the capability report message UECapabilityInformation sent by the terminal to the network, and the feedback information oneFL-DMRS indicates that the terminal supports one DMRS in advance, No DMRS attached.

Example 2:

The process of Example 2 is similar to that in Figure 6, including:

1) The network sends a capability query message UECapabilityEnquiry to the terminal.

2) According to its own capabilities, the terminal does not include the feedback information oneFL-DMRS in the capability report message UECapabilityInformation sent by the terminal to the network. At this time, it means that the terminal does not support one DMRS in front, and there is no additional DMRS, then the network At least one pre-DMRS and at least one additional DMRS can be configured for the UE.

Example 3:

Please refer to FIG. 7, an example of a demodulation reference signal configuration method provided by an embodiment of the present invention includes:

Step 71, the network sends a UECapabilityEnquiry message to the UE.

Step 72, the terminal reports its own capabilities to the network according to the capability query message, for example: support 1 DMRS in advance, no additional DMRS; support 1 DMRS in advance, 1 additional DMRS; and, support 1 DMRS in advance , additional 2 DMRS. Considering the information overhead, the DMRS type of the preceding 1 DMRS and the additional 1 DMRS may not be reported, and the network defaults that all terminals support this DMRS type.

Step 73, the base station judges whether the terminal is in a high-speed state. For example, it is pre-defined that when the moving speed of the terminal is greater than a certain speed threshold, it is in a high-speed state, otherwise it is not in a high-speed state. In this way, the base station can determine whether the terminal is in a high-speed state according to the moving speed of the terminal.

Step 74, if it is in a high-speed state, configure a high-speed DMRS configuration for the terminal, such as 1 DMRS in front and 2 additional DMRSs; the DMRS configuration in a high-speed state usually includes more additional DMRSs to provide reliability of information transmission .

Step 75, when the terminal is not in the high-speed state, the base station judges whether the current signal strength (such as RSRP) of the terminal is greater than a threshold.

Step 76, if it is greater than the above threshold, the base station configures a high-performance DMRS configuration for the terminal, such as 1 DMRS in front and no additional DMRS. A high-performance DMRS configuration typically has fewer additional DMRSs to improve the data transmission rate of the terminal.

Step 77, if it is not greater than the above threshold, the base station configures a low-performance DMRS configuration for the UE, for example, one DMRS is prepended and one DMRS is added. The low-performance DMRS configuration usually has more additional DMRSs to improve data transmission reliability of the terminal.

Based on the above method, an embodiment of the present invention also provides a device for implementing the above method.

Please refer to FIG. 8 , an embodiment of the present invention provides a schematic structural diagram of a base station 80, and the base station 80 includes:

The receiving module 81 is configured to receive a capability report message sent by the terminal, the capability report message is at least used to indicate whether the terminal supports a first DMRS type, and the first DMRS type includes 1 pre-DMRS and 0 additional DMRS type of DMRS;

A determining module 82, configured to determine the target DMRS type adopted by the terminal according to the capability report message;

The sending module 83 is configured to send a DMRS configuration message carrying the target DMRS type to the terminal.

Optionally, the capability report message carries a first information element, and the first information element is used to indicate whether the terminal supports the first DMRS type; or,

The capability report message carries or does not carry a second information element, wherein, when the second information element is carried, it means that the terminal supports the first DMRS type; when the second information element is not carried, it means that the terminal The first DMRS type is not supported.

Optionally, the capability report message is also used to indicate the additional DMRS type supported by the terminal, and the additional DMRS type includes one pre-DMRS and at least one additional DMRS.

Optionally, the above determination module is specifically used for:

Obtain the motion state of the terminal;

When the motion state indicates that the terminal is in a preset high-speed motion state, determine that the target DMRS type adopted by the terminal is the second DMRS type;

When the motion state indicates that the terminal is not in the high-speed motion state, acquire a received signal strength parameter of the terminal;

When the received signal strength parameter is not greater than a preset threshold, determine that the target DMRS type adopted by the terminal is a third DMRS type;

When the received signal strength parameter is greater than a preset threshold, determine that the target DMRS type adopted by the terminal is a fourth DMRS type;

Wherein, the second DMRS type, the third DMRS type and the fourth DMRS type are all DMRS types supported by the terminal, and the additional DMRS contained in the second DMRS type is no less than that contained in the third DMRS type An additional DMRS, where the additional DMRS included in the third DMRS type is no less than the additional DMRS included in the fourth DMRS type.

Optionally, the above-mentioned sending module is further configured to send a capability query message to the terminal.

Please refer to FIG. 9 , an embodiment of the present invention provides another schematic structural diagram of a base station, including: a processor 901, a transceiver 902, a memory 903, and a bus interface, where:

In the embodiment of the present invention, the base station 900 further includes: a program stored in the memory 903 and operable on the processor 901, when the program is executed by the processor 901, the following steps are implemented:

receiving a capability report message sent by the terminal, where the capability report message is at least used to indicate whether the terminal supports a first DMRS type, where the first DMRS type is a DMRS type including 1 pre-DMRS and 0 additional DMRS;

Determine the target DMRS type adopted by the terminal according to the capability report message;

Sending a DMRS configuration message carrying the target DMRS type to the terminal.

In FIG. 9 , the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 901 and various circuits of memory represented by memory 903 are linked together. The bus architecture can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein. The bus interface provides the interface. Transceiver 902 may be a plurality of elements, including a transmitter and a receiver, providing a means for communicating with various other devices over transmission media.

The processor 901 is responsible for managing the bus architecture and general processing, and the memory 903 can store data used by the processor 901 when performing operations.

Optionally, the capability report message carries a first information element, and the first information element is used to indicate whether the terminal supports the first DMRS type; or,

The capability report message carries or does not carry a second information element, wherein, when the second information element is carried, it means that the terminal supports the first DMRS type; when the second information element is not carried, it means that the terminal The first DMRS type is not supported.

Optionally, the capability report message is also used to indicate the additional DMRS type supported by the terminal, and the additional DMRS type includes one pre-DMRS and at least one additional DMRS.

Optionally, when the program is executed by the processor 901, the following steps may also be implemented:

Obtain the motion state of the terminal;

When the motion state indicates that the terminal is in a preset high-speed motion state, determine that the target DMRS type adopted by the terminal is the second DMRS type;

When the motion state indicates that the terminal is not in the high-speed motion state, acquire a received signal strength parameter of the terminal;

When the received signal strength parameter is not greater than a preset threshold, determine that the target DMRS type adopted by the terminal is a third DMRS type;

When the received signal strength parameter is greater than a preset threshold, determine that the target DMRS type adopted by the terminal is a fourth DMRS type;

Wherein, the second DMRS type, the third DMRS type and the fourth DMRS type are all DMRS types supported by the terminal, and the additional DMRS contained in the second DMRS type is no less than that contained in the third DMRS type An additional DMRS, where the additional DMRS included in the third DMRS type is no less than the additional DMRS included in the fourth DMRS type.

Optionally, when the program is executed by the processor 903, the following step may also be implemented: sending a capability query message to the terminal before receiving the capability report message sent by the terminal.

Referring to FIG. 10, an embodiment of the present invention provides a terminal 100, including:

The sending module 101 is configured to send a capability report message to the base station, where the capability report message is at least used to indicate whether the terminal supports a first DMRS type, and the first DMRS type is 1 pre-DMRS and 0 additional DMRS DMRS configuration;

The configuration module 102 is configured to receive DMRS configuration information sent by the base station according to the capability report message, and configure the DMRS type adopted by the terminal according to the DMRS configuration information.

Optionally, the capability report message carries a first information element, and the first information element is used to indicate whether the terminal supports the first DMRS type; or,

The capability report message carries or does not carry a second information element, wherein, when the second information element is carried, it means that the terminal supports the first DMRS type; when the second information element is not carried, it means that the terminal The first DMRS type is not supported.

Optionally, the capability report message is also used to indicate the additional DMRS type supported by the terminal, and the additional DMRS type includes one pre-DMRS and at least one additional DMRS.

Optionally, the above terminal also includes:

The receiving module is configured to receive the capability query message sent by the base station.

Please refer to FIG. 11 , another structure of a terminal provided by an embodiment of the present invention. The terminal 1100 includes: a processor 1101, a transceiver 1102, a memory 1103, a user interface 1104, and a bus interface, wherein:

In the embodiment of the present invention, the terminal 1100 further includes: a program stored in the memory 1103 and operable on the processor 1101, and the following steps are implemented when the program is executed by the processor 1101:

Send a capability report message to the base station, where the capability report message is at least used to indicate whether the terminal supports a first DMRS type, where the first DMRS type is a DMRS configuration with 1 pre-DMRS and 0 additional DMRS;

receiving the DMRS configuration information delivered by the base station according to the capability report message, and configuring the DMRS type adopted by the terminal according to the DMRS configuration information.

In FIG. 11 , the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1101 and various circuits of memory represented by memory 1103 are linked together. The bus architecture can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein. The bus interface provides the interface. Transceiver 1102 may be a plurality of elements, including a transmitter and a receiver, providing a means for communicating with various other devices over transmission media. For different user equipments, the user interface 1104 may also be an interface capable of connecting externally and internally to required devices, and the connected devices include but not limited to keypads, displays, speakers, microphones, joysticks, and so on.

The processor 1101 is responsible for managing the bus architecture and general processing, and the memory 1103 can store data used by the processor 1101 when performing operations.

Optionally, the capability report message carries a first information element, and the first information element is used to indicate whether the terminal supports the first DMRS type; or,

The capability report message carries or does not carry a second information element, wherein, when the second information element is carried, it means that the terminal supports the first DMRS type; when the second information element is not carried, it means that the terminal The first DMRS type is not supported.

Optionally, the capability report message is also used to indicate the additional DMRS type supported by the terminal, and the additional DMRS type includes one pre-DMRS and at least one additional DMRS.

Optionally, when the program is executed by the processor 1101, the following step may also be implemented: before sending the capability report message, receiving a capability query message sent by the base station.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

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

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.

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

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a base station, etc.) execute all or part of the steps of the demodulation reference signal configuration method described in various embodiments of the present invention. The aforementioned storage medium includes: various media capable of storing program codes such as U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (15)

1. A configuration method for a demodulation reference signal DMRS, applied to a base station, is characterized in that, comprising: receiving a capability report message sent by the terminal, where the capability report message is at least used to indicate whether the terminal supports a first DMRS type, where the first DMRS type is a DMRS type including 1 pre-DMRS and 0 additional DMRS; Determine the target DMRS type adopted by the terminal according to the capability report message; sending a DMRS configuration message carrying the target DMRS type to the terminal; According to the capability report message, the step of determining the target DMRS type adopted by the terminal includes: Obtain the motion state of the terminal; When the motion state indicates that the terminal is in a preset high-speed motion state, determine that the target DMRS type adopted by the terminal is the second DMRS type; When the motion state indicates that the terminal is not in the high-speed motion state, acquire a received signal strength parameter of the terminal; When the received signal strength parameter is not greater than a preset threshold, determine that the target DMRS type adopted by the terminal is a third DMRS type; When the received signal strength parameter is greater than a preset threshold, determine that the target DMRS type adopted by the terminal is a fourth DMRS type; Wherein, the second DMRS type, the third DMRS type and the fourth DMRS type are all DMRS types supported by the terminal, and the additional DMRS contained in the second DMRS type is no less than that contained in the third DMRS type An additional DMRS, where the additional DMRS included in the third DMRS type is no less than the additional DMRS included in the fourth DMRS type. 2. The method of claim 1, wherein The capability report message carries a first information element, and the first information element is used to indicate whether the terminal supports the first DMRS type; or, The capability report message carries or does not carry a second information element, wherein, when the second information element is carried, it means that the terminal supports the first DMRS type; when the second information element is not carried, it means that the terminal The first DMRS type is not supported. 3. The method of claim 1 or 2, wherein, The capability report message is also used to indicate the additional DMRS type supported by the terminal, and the additional DMRS type includes one pre-DMRS and at least one additional DMRS. 4. The method according to claim 1, further comprising: before receiving the capability report message sent by the terminal: Send a capability query message to the terminal. 5. A method for configuring a demodulation reference signal DMRS, applied to a terminal, comprising: Send a capability report message to the base station, where the capability report message is at least used to indicate whether the terminal supports a first DMRS type, where the first DMRS type is a DMRS configuration with 1 pre-DMRS and 0 additional DMRS; receiving the DMRS configuration information issued by the base station according to the capability report message, and configuring the target DMRS type adopted by the terminal according to the DMRS configuration information; Wherein, when the motion state of the terminal indicates that the terminal is in a preset high-speed motion state, the target DMRS type is the second DMRS type; When the motion state indicates that the terminal is not in the high-speed motion state, and the received signal strength parameter of the terminal is not greater than a preset threshold, the target DMRS type is a third DMRS type; When the motion state indicates that the terminal is not in the high-speed motion state, and the received signal strength parameter of the terminal is greater than a preset threshold, the target DMRS type is a fourth DMRS type; Wherein, the second DMRS type, the third DMRS type and the fourth DMRS type are all DMRS types supported by the terminal, and the additional DMRS contained in the second DMRS type is no less than that contained in the third DMRS type An additional DMRS, where the additional DMRS included in the third DMRS type is no less than the additional DMRS included in the fourth DMRS type. 6. The method of claim 5, wherein, The capability report message carries a first information element, and the first information element is used to indicate whether the terminal supports the first DMRS type; or, The capability report message carries or does not carry a second information element, wherein, when the second information element is carried, it means that the terminal supports the first DMRS type; when the second information element is not carried, it means that the terminal The first DMRS type is not supported. 7. The method of claim 5 or 6, wherein, The capability report message is also used to indicate the additional DMRS type supported by the terminal, and the additional DMRS type includes one pre-DMRS and at least one additional DMRS. 8. The method according to claim 7, further comprising: before sending the capability report message: Receive a capability query message sent by the base station. 9. A base station, characterized in that it comprises: A receiving module, configured to receive a capability report message sent by the terminal, where the capability report message is at least used to indicate whether the terminal supports a first DMRS type, and the first DMRS type includes 1 pre-DMRS and 0 additional DMRS DMRS type; A determining module, configured to determine the target DMRS type adopted by the terminal according to the capability report message; A sending module, configured to send a DMRS configuration message carrying the target DMRS type to the terminal; Wherein, the determination module is also used for: Acquire the motion state of the terminal; when the motion state indicates that the terminal is in a preset high-speed motion state, determine that the target DMRS type adopted by the terminal is the second DMRS type; When the motion state indicates that the terminal is not in the high-speed motion state, acquire a received signal strength parameter of the terminal; When the received signal strength parameter is not greater than a preset threshold, determine that the target DMRS type adopted by the terminal is a third DMRS type; When the received signal strength parameter is greater than a preset threshold, determine that the target DMRS type adopted by the terminal is a fourth DMRS type; Wherein, the second DMRS type, the third DMRS type and the fourth DMRS type are all DMRS types supported by the terminal, and the additional DMRS contained in the second DMRS type is no less than that contained in the third DMRS type An additional DMRS, where the additional DMRS included in the third DMRS type is no less than the additional DMRS included in the fourth DMRS type. 10. A base station, characterized in that it includes a transceiver and a processor, wherein, The transceiver is configured to receive a capability report message sent by a terminal, where the capability report message is at least used to indicate whether the terminal supports a first DMRS type, and the first DMRS type includes 1 pre-DMRS and 0 DMRS type of additional DMRS; The processor is configured to determine the target DMRS type adopted by the terminal according to the capability report message; The transceiver is further configured to send a DMRS configuration message carrying the target DMRS type to the terminal; The processor is also used for: Obtain the motion state of the terminal; When the motion state indicates that the terminal is in a preset high-speed motion state, determine that the target DMRS type adopted by the terminal is the second DMRS type; When the motion state indicates that the terminal is not in the high-speed motion state, acquire a received signal strength parameter of the terminal; When the received signal strength parameter is not greater than a preset threshold, determine that the target DMRS type adopted by the terminal is a third DMRS type; When the received signal strength parameter is greater than a preset threshold, determine that the target DMRS type adopted by the terminal is a fourth DMRS type; Wherein, the second DMRS type, the third DMRS type and the fourth DMRS type are all DMRS types supported by the terminal, and the additional DMRS contained in the second DMRS type is no less than that contained in the third DMRS type An additional DMRS, where the additional DMRS included in the third DMRS type is no less than the additional DMRS included in the fourth DMRS type. 11. A base station, characterized by comprising: a processor, a memory, and a program stored in the memory and operable on the processor, when the program is executed by the processor, the system according to claim 1 is realized. Steps in the method for configuring the demodulation reference signal DMRS described in any one of to 4. 12. A terminal, characterized in that, comprising: A sending module, configured to send a capability report message to the base station, where the capability report message is at least used to indicate whether the terminal supports a first DMRS type, and the first DMRS type is a DMRS with 1 pre-DMRS and 0 additional DMRS configuration; A configuration module, configured to receive DMRS configuration information issued by the base station according to the capability report message, and configure a target DMRS type adopted by the terminal according to the DMRS configuration information; Wherein, when the motion state of the terminal indicates that the terminal is in a preset high-speed motion state, the target DMRS type is the second DMRS type; When the motion state indicates that the terminal is not in the high-speed motion state, and the received signal strength parameter of the terminal is not greater than a preset threshold, the target DMRS type is a third DMRS type; When the motion state indicates that the terminal is not in the high-speed motion state, and the received signal strength parameter of the terminal is greater than a preset threshold, the target DMRS type is a fourth DMRS type; Wherein, the second DMRS type, the third DMRS type and the fourth DMRS type are all DMRS types supported by the terminal, and the additional DMRS contained in the second DMRS type is no less than that contained in the third DMRS type An additional DMRS, where the additional DMRS included in the third DMRS type is no less than the additional DMRS included in the fourth DMRS type. 13. A terminal, characterized in that it includes a transceiver and a processor, wherein, The transceiver is configured to send a capability report message to the base station, where the capability report message is at least used to indicate whether the terminal supports a first DMRS type, and the first DMRS type is 1 pre-DMRS and 0 additional DMRS DMRS configuration; and, receiving DMRS configuration information issued by the base station according to the capability report message; The processor is configured to configure a target DMRS type adopted by the terminal according to the DMRS configuration information; Wherein, when the motion state of the terminal indicates that the terminal is in a preset high-speed motion state, the target DMRS type is the second DMRS type; When the motion state indicates that the terminal is not in the high-speed motion state, and the received signal strength parameter of the terminal is not greater than a preset threshold, the target DMRS type is a third DMRS type; When the motion state indicates that the terminal is not in the high-speed motion state, and the received signal strength parameter of the terminal is greater than a preset threshold, the target DMRS type is a fourth DMRS type; Wherein, the second DMRS type, the third DMRS type and the fourth DMRS type are all DMRS types supported by the terminal, and the additional DMRS contained in the second DMRS type is no less than that contained in the third DMRS type An additional DMRS, where the additional DMRS included in the third DMRS type is no less than the additional DMRS included in the fourth DMRS type. 14. A terminal, characterized by comprising: a processor, a memory, and a program stored on the memory and operable on the processor, when the program is executed by the processor, the program according to claim 5 is realized. Steps in the method for configuring the demodulation reference signal DMRS described in any one of 8 to 8. 15. A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the solution according to any one of claims 1 to 8 is realized. Steps of a method for configuring a reference signal DMRS.

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