CN112448802B

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

Info

Publication number: CN112448802B
Application number: CN201910838083.4A
Authority: CN
Inventors: 陈俊; 韩延涛; 童辉; 刘建华
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2023-03-28
Anticipated expiration: 2039-09-05
Also published as: CN112448802A

Abstract

According to the configuration method of the demodulation reference signal, the terminal and the base station provided by the embodiment of the invention, the terminal reports the DMRS type supported by the terminal, and the network side network adaptively configures the DMRS type of the terminal according to the terminal capability, the wireless environment and other factors, so that the network performance can be improved, and the experience of central and edge users can be optimized.

Description

Configuration method of demodulation reference signal, terminal and base station

Technical Field

The present invention relates to the field of mobile communication technologies, and in particular, to a method for configuring a Demodulation Reference signal (DMRS), a terminal, and a base station.

Background

In digital communication systems, demodulation of data relies on the estimation of the channel by the DMRS. The resource occupied by the DMRS in one physical resource block is configurable and is usually represented by a DMRS pattern. In an Orthogonal Frequency Division Multiplexing (OFDM) system based on cyclic prefixes, a DMRS pattern generally includes a pre-DMRS and one or more additional DMRSs, and a base station configures a combination of the pre-DMRS and the additional DMRSs for downlink and uplink according to a current channel condition and the number of transmission ports.

Fig. 1 illustrates DMRS types including only 1 pre-DMRSs, and in one physical resource block shown in fig. 1, 14 symbols are included in 1 slot, where a control region occupies the first 2 symbols, and the 3rd symbol is one pre-DMRS.

Fig. 2 shows DMRS types including 1 pre-DMRS and 1 additional DMRS, and in one physical resource block shown in fig. 1, there are 14 symbols in 1 slot, where a control region occupies the first 2 symbols, and the 3rd symbol is one pre-DMRS.

For convenience of description, the DMRS type containing only 1 pre-DMRS is also referred to herein as 1+0, and the DMRS type containing 1 pre-DMRS and n additional DMRSs is referred to as 1+ n.

The related art requires that a User Equipment (UE) must support a DMRS type (fig. 1) containing only 1 preamble DMRS, and a DMRS type (fig. 2) containing 1 preamble DMRS and 1 additional DMRS. Therefore, the UE capability reporting message (UECapabilityInformation) in the prior art does not include the two DMRS types.

Even though the above requirements exist in the prior art, due to the limited industrial capability, not all terminals can support the above two DMRS types, for example, the company in the university only supports 1+1 and does not support 1+0 at present. Therefore, the DMRS configuration method in the prior art may not be configured adaptively to the actual capability of the terminal because the network and the terminal side have inconsistent understanding of the capability of the terminal.

Disclosure of Invention

At least one embodiment of the present invention provides a method for configuring a demodulation reference signal, 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, and includes:

receiving a capability reporting message sent by a terminal, wherein the capability reporting message is at least used for indicating whether the terminal supports a first DMRS type, and the first DMRS type is a DMRS type containing 1 preposed DMRS and 0 additional DMRS;

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

and sending a DMRS configuration message carrying the target DMRS type to the terminal.

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

the capability reporting message carries or does not carry a second information element, wherein the second information element is carried to indicate that the terminal supports a first DMRS type; and when the second information element is not carried, the terminal does not support the first DMRS type.

Optionally, the capability reporting message is further configured to indicate an additional DMRS type supported by the terminal, where the additional DMRS type includes 1 preamble DMRS and at least one additional DMRS.

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

acquiring the motion state of the terminal;

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

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

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

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

and the second DMRS type, the third DMRS type and the fourth DMRS type are all DMRS types supported by the terminal, the additional DMRS contained in the second DMRS type is not less than the additional DMRS contained in the third DMRS type, and the additional DMRS contained in the third DMRS type is not less than the additional DMRS contained in the fourth DMRS type.

Optionally, before receiving the capability reporting message sent by the terminal, the method further includes:

and sending a capability query message to the terminal.

The embodiment of the invention also provides a method for configuring the demodulation reference signal DMRS, which is applied to a terminal and comprises the following steps:

sending a capability reporting message to a base station, wherein the capability reporting message is at least used for indicating whether the terminal supports a first DMRS type, and the first DMRS type is the DMRS configuration of 1 front DMRS and 0 additional DMRS;

and receiving DMRS configuration information issued 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, before sending the capability reporting message, the method further includes:

and receiving a capability inquiry message sent by the base station.

An embodiment of the present invention further provides a base station, including:

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

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

and the sending module is used for sending a DMRS configuration message carrying the target DMRS type to the terminal.

The embodiment of the invention also provides a base station, which comprises a transceiver and a processor, wherein,

the transceiver is used for receiving a capability reporting message sent by a terminal, wherein the capability reporting message is at least used for indicating whether the terminal supports a first DMRS type, and the first DMRS type is a DMRS type comprising 1 preposed DMRS and 0 additional DMRS;

the processor is configured to determine a 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 further provides a base station, including: a processor, a memory, and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the steps of the method for configuring the demodulation reference signal DMRS as described above.

An embodiment of the present invention further provides a terminal, including:

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

and the configuration module is used for receiving the DMRS configuration information issued 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.

Embodiments of the present invention also provide a terminal, including a transceiver and a processor, wherein,

the transceiver is configured to send a capability reporting message to a base station, where the capability reporting 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; and receiving DMRS configuration information issued by the base station according to the capability report message;

and the processor is used for configuring the DMRS type adopted by the terminal according to the DMRS configuration information.

An embodiment of the present invention further provides a terminal, including: a processor, a memory, and a program stored on the memory and executable on the processor, the program implementing the steps of the method for configuring a demodulation reference signal DMRS as described above when the program is executed by the processor.

According to another aspect of the invention, at least one embodiment provides a computer readable storage medium having a program stored thereon, which when executed by a processor, performs the steps of the method as described above.

Compared with the prior art, the method for configuring the demodulation reference signal, the terminal and the base station provided by the embodiment of the invention have the advantages that the terminal reports the DMRS type supported by the terminal, and the network side network adaptively configures the DMRS type of the terminal according to the terminal capability, the wireless environment and other factors, so that the network performance can be improved, and the experience of central and edge users can be optimized.

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 embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

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

fig. 2 is a schematic diagram of another DMRS type involved in an 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 flowchart of a method for configuring a demodulation reference signal according to an embodiment of the present invention, when the method is applied to a base station side;

fig. 5 is a flowchart illustrating a method for configuring a demodulation reference signal according to an embodiment of the present invention, when the method is applied to a terminal side;

fig. 6 is an exemplary diagram of an interaction flow of a method for configuring a demodulation reference signal according to an embodiment of the present invention;

fig. 7 is a diagram illustrating another alternative flow of a method for configuring a demodulation reference signal according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a base station according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a base station according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 11 is another schematic structural diagram of a terminal according to an embodiment of the present invention.

Detailed Description

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

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. In the description and in the claims "and/or" means at least one of the connected objects.

The techniques described herein are not limited to NR systems and Long Time Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, and may also be used for various wireless communication systems, such as Code Division Multiple Access (CDMA), time Division Multiple Access (TDMA), 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. CDMA systems may implement Radio technologies such as CDMA2000, universal Terrestrial Radio Access (UTRA), and so on. UTRA includes Wideband CDMA (Wideband Code Division Multiple Access, WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as Global System for Mobile communications (GSM). The OFDMA system may implement radio technologies such as Ultra Mobile Broadband (UMB), evolved-UTRA (E-UTRA), IEEE 802.21 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, flash-OFDM, etc. UTRA and E-UTRA are parts of the Universal Mobile Telecommunications System (UMTS). LTE and higher LTE (e.g., LTE-A) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE-A and GSM are described in the literature from an organization named "third Generation Partnership project" (3 rd Generation Partnership project,3 GPP). CDMA2000 and UMB are described in documents from an organization named "third generation partnership project 2" (3 GPP 2). The techniques described herein may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. However, the following description describes the NR system for purposes of example, and NR terminology is used in much of the description below, although the techniques may also be applied to applications other than NR system applications.

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 described methods may be performed in an order different than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Referring to fig. 3, fig. 3 is 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. The terminal 31 may also be referred to as a User terminal or a User Equipment (UE), where the terminal 31 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or a vehicle-mounted Device, and the specific type of the 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 Base Station may be a 5G or later-version Base Station (e.g., a gNB, a 5G NR NB, etc.), or a Base Station in other communication systems (e.g., an eNB, a WLAN access point, or other access points, etc.), where the Base Station may be referred to as a node B, an evolved node B, an access point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access point, a WiFi node, or some other suitable terminology in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, and it should be noted that the Base Station in the NR system is only taken as an example in the embodiment of the present invention, but the specific type of the Base Station is not limited.

The base stations may communicate with the terminals 31 under the control of a base station controller, which may be part of the core network or some of the base stations in various examples. Some base stations may communicate control information or user data with the core network through a backhaul. In some examples, some of the base stations may communicate with each other, directly or indirectly, over backhaul links, which may be wired or wireless communication links. A wireless communication system may support operation on multiple carriers (waveform signals of different frequencies). A multi-carrier transmitter can transmit 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 transmitted on a different carrier and may carry control information (e.g., reference signals, control channels, etc.), overhead information, data, and so on.

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

The communication links in a wireless communication system may comprise an Uplink for carrying Uplink (UL) transmissions (e.g., from terminal 31 to network device 32) or a Downlink for carrying Downlink (DL) transmissions (e.g., from network device 32 to terminal 31). The UL transmission may also be referred to as reverse link transmission, while the DL transmission may also be referred to as forward link transmission. Downlink transmissions may be made using licensed frequency bands, unlicensed frequency bands, or both. Similarly, uplink transmissions may be made using licensed frequency bands, unlicensed frequency bands, or both.

As described in the background, although the prior art requires that terminals must support DMRS types of 1+0 and 1+1, there are situations in practical applications where some terminals do not support one or more DMR types. Considering that 1+0, the reference signal occupies less resources, so the data rate is higher than 1+1. In the prior art, in order to settle a low-performance terminal in an initial network (when a high-speed scene is few), a DMRS type with a lower performance is generally configured uniformly, for example, 1+1, so that a high-performance user at a cell center cannot enjoy higher user experience, and the performance of the whole network is reduced. And if the unified configuration is 1+0, the performance of the cell edge users may be degraded.

In order to solve at least one of the above problems, embodiments of the present invention provide a method for configuring a demodulation reference signal, which can perform adaptive configuration on a DMRS type used by a terminal according to an actual capability of the terminal, so as to improve network performance and optimize network usage experience of users at the center and at the edge of a cell.

Referring to fig. 4, a method for configuring a demodulation reference signal according to an embodiment of the present invention, when applied to a base station, includes:

step 41, receiving a capability reporting message sent by a terminal, where the capability reporting message is at least used to indicate whether the terminal supports a first DMRS type, and the first DMRS type is a DMRS type that includes 1 pre-DMRS and 0 additional DMRS.

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

As an implementation manner, the terminal may carry a first Information Element (IE, information Element) in the capability reporting message, where the first Information Element is used to indicate whether the terminal supports the first DMRS type. In this way, the base station may 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 or may not carry a second information element in the capability reporting message, where when carrying the second information element, it indicates that the terminal supports the first DMRS type; and when the second information element is not carried, the terminal does not support the first DMRS type. In this way, the base station may determine whether the terminal supports the first DMRS type according to whether the capability report message includes the second information element. Of course, it may also be indicated that the terminal does not support the first DMRS type when the capability report message carries the second information element; and when the second information element is not carried, the terminal supports the first DMRS type, and the base station and the terminal side only need to have the same convention.

And step 42, determining 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 and indicated in the capability report message. The target DMRS type is one DMRS type which can be supported by the terminal. Specifically, when the target DMRS type is determined, the base station may further perform a decision comprehensively according to the motion state of the terminal and factors such as a wireless environment (e.g., received signal strength of the terminal).

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

Here, the base station configures the terminal to perform DMRS signal transceiving processing by using the target DMRS type by transmitting a DMRS configuration message carrying the target DMRS type to the terminal.

Through the steps, the terminal reports the DMRS type capability supported by the terminal, and the network side network adaptively configures the DMRS type of the terminal according to the terminal capability, the wireless environment and other factors, so that the network performance can be improved, and the experience of central and edge users can be optimized.

Considering that the terminal may support different numbers of additional DMRSs, in step 41, the capability reporting message may also be used to indicate additional DMRS types supported by the terminal, where the additional DMRS types include 1 preamble DMRS and at least one additional DMRS. Because most of terminals in the prior art support the DMRS type of 1+1, in order to reduce information overhead, the terminal may not need to report that the terminal supports the DMRS types including 1 pre-DMRS and 1 additional DMRS. At this time, the capability reporting message is used to indicate whether the terminal supports the first DMRS type, and is also used to indicate an additional DMRS type supported by the terminal, where the additional DMRS type includes 1 pre-DMRS and at least two additional DMRSs.

In the step 42, the base station may configure the DMRS type for the terminal according to the motion state of the terminal, the wireless environment, and other factors, and an example of a specific configuration is given below, and it should be noted that the following example is only one example that can be adopted by the embodiment of the present invention, and is not intended to limit the present invention.

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

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

Here, the second DMRS type, the third DMRS type, and the fourth DMRS type are all DMRS types supported by the terminal, and the second DMRS type includes an additional DMRS that is not less than an additional DMRS included in the third DMRS type, and the third DMRS type includes an additional DMRS that is not less than an additional DMRS included in the fourth DMRS type. The second, third, and fourth DMRS types may be the first DMRS type described above, or may not be other additional DMRS types.

The method for configuring demodulation reference signals according to the embodiment of the present invention is described above from the base station side. The following further explains the terminal side.

Referring to fig. 5, when the method for configuring a demodulation reference signal DMRS according to an embodiment of the present invention is applied to a terminal, the method includes:

step 51, sending a capability reporting message to a base station, where the capability reporting message is at least used to indicate whether the terminal supports a first DMRS type, and the first DMRS type is DMRS configuration of 1 pre-DMRS and 0 additional DMRS.

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

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

And step 52, receiving DMRS configuration information issued 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.

Considering that a terminal may support different numbers of additional DMRSs, in step 51, the terminal may further indicate, in a capability reporting message, additional DMRS types supported by the terminal, where the additional DMRS types include 1 preamble DMRS and at least one additional DMRS. Because most of terminals in the prior art support the DMRS type of 1+1, in order to reduce information overhead, the terminal may not need to report that the terminal supports the DMRS types including 1 pre-DMRS and 1 additional DMRS. At this time, the capability reporting message is used to indicate whether the terminal supports the first DMRS type, and is also used to indicate an additional DMRS type supported by the terminal, where the additional DMRS type includes 1 pre-DMRS and at least two additional DMRSs.

The above describes the method for configuring demodulation reference signals according to the embodiment of the present invention from the base station and the terminal side, respectively. The above flow is further illustrated by several examples.

Example 1:

referring to fig. 6, an example of a method for configuring a demodulation reference signal according to an embodiment of the present invention includes:

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

And step 62, the terminal newly adds a piece of feedback information oneFL-DMRS in a capability reporting message UECapabilityinformation sent to the network by the terminal according to the capability of the terminal, wherein the feedback information oneFL-DMRS indicates that the terminal supports 1 DMRS in front and does not have any additional DMRS.

Example 2:

the flow of this example 2 is similar to fig. 6, including:

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

2) The terminal does not contain feedback information oneFL-DMRS in the capability reporting message UECapabilityinformation sent to the network by the terminal according to the capability of the terminal, and at the moment, the terminal does not support the front 1 DMRS and does not have the additional DMRS, so the network can configure at least 1 front DMRS and at least 1 additional DMRS for the UE.

Example 3:

referring to fig. 7, an example of a method for configuring a demodulation reference signal according to an embodiment of the present invention includes:

step 71, the network sends a capability query message UECapabilityEnquiry to the UE.

Step 72, the terminal reports its own capability to the network according to the capability query message, for example: the method supports 1 DMRS in the front and has no additional DMRS; the method comprises the steps of supporting 1 DMRS in advance and adding 1 DMRS; and supporting 1 DMRS in front and adding 2 DMRSs. Considering information overhead, for 1 DMRS in front, DMRS types with 1 added DMRS may not be reported, and all terminals are defaulted by the network to support the DMRS types.

In step 73, the base station determines whether the terminal is in a high speed state. For example, a high speed state is defined when the moving speed of the terminal is greater than a certain speed threshold, otherwise, the terminal is not in the 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 the terminal is in a high-speed state, configuring high-speed DMRS configuration for the terminal, and adding 2 DMRSs if the terminal is in the high-speed state; DMRS configurations in a high-speed state typically contain more additional DMRSs to provide reliability of information transmission.

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

And step 76, if the DMRS configuration is greater than the threshold, the base station configures high-performance DMRS configuration for the terminal, and if the DMRS configuration is greater than the threshold, the base station does not have additional DMRS, and the DMRS is configured with 1 DMRS in front. A high performance DMRS configuration typically has fewer additional DMRS to provide a data transmission rate for the terminal.

And 77, if the DMRS configuration is not greater than the threshold, the base station configures low-performance DMRS configuration for the UE, such as 1 DMRS in front and 1 DMRS in addition. A low performance DMRS configuration typically has more additional DMRS to provide data transmission reliability for the terminal.

Based on the method, the embodiment of the invention also provides equipment for implementing the method.

Referring to fig. 8, an embodiment of the present invention provides a structural schematic diagram of a base station 80, where the base station 80 includes:

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

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

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

Optionally, the determining module is specifically configured to:

acquiring the motion state of the terminal;

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

Referring to fig. 9, another schematic structural diagram of a base station according to an embodiment of the present invention includes: a processor 901, a transceiver 902, a memory 903, and a bus interface, wherein:

in this embodiment of the present invention, the base station 900 further includes: a program stored on the memory 903 and executable on the processor 901, which when executed by the processor 901 performs the steps of:

receiving a capability reporting message sent by a terminal, wherein the capability reporting message is at least used for indicating whether the terminal supports a first DMRS type, and the first DMRS type is a DMRS type comprising 1 preposed DMRS and 0 additional DMRS;

In fig. 9, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 901 and various circuits of memory represented by memory 903 being 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 902 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.

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

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

Optionally, when executed by the processor 901, the program may further implement the following steps:

acquiring the motion state of the terminal;

wherein the second DMRS type, the third DMRS type and the fourth DMRS type are all DMRS types supported by the terminal, and the second DMRS type includes an additional DMRS which is not less than an additional DMRS included in the third DMRS type, and the third DMRS type includes an additional DMRS which is not less than an additional DMRS included in the fourth DMRS type.

Optionally, the program may further implement the following steps when executed by the processor 903: and sending a capability query message to the terminal before receiving a capability report message sent by the terminal.

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

a sending module 101, configured to send a capability reporting message to a base station, where the capability reporting 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;

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

Optionally, the terminal further includes:

and the receiving module is used for receiving the capability inquiry message sent by the base station.

Referring to fig. 11, another structure of a terminal according to an embodiment of the present invention is shown, in which the terminal 1100 includes: a processor 1101, a transceiver 1102, a memory 1103, a user interface 1104, and a bus interface, wherein:

in this embodiment of the present invention, the terminal 1100 further includes: a program stored on the memory 1103 and executable on the processor 1101, the program, when executed by the processor 1101, implementing the steps of:

sending a capability reporting message to a base station, wherein the capability reporting message is at least used for indicating whether the terminal supports a first DMRS type, and the first DMRS type is configured by 1 preposed DMRS and 0 additional DMRS;

In fig. 11, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1101, and various circuits, represented by memory 1103, 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 1102 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. For different user devices, the user interface 1104 may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

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

Optionally, the program may further implement the following steps when executed by the processor 1101: and receiving the capability query message sent by the base station before sending the capability report message.

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 can be clearly understood by those skilled in the art that, for convenience and simplicity 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 purpose of the solution of the embodiment of the present invention.

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 or a part of the technical solution that substantially contributes to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a base station) to execute all or part of the steps of the method for configuring the demodulation reference signal 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 a demodulation reference signal (DMRS) is applied to a base station, and is characterized by comprising the following steps:

sending a DMRS configuration message carrying the target DMRS type to the terminal;

and determining a target DMRS type adopted by the terminal according to the capability report message, wherein the step comprises the following steps:

acquiring the motion state of the terminal;

2. The method of claim 1,

the capability reporting message carries a first information element, and the first information element is used for indicating whether the terminal supports a first DMRS type; or,

3. The method of claim 1 or 2,

the capability reporting message is further used for indicating additional DMRS types supported by the terminal, and the additional DMRS types comprise 1 preposed DMRS and at least one additional DMRS.

4. The method of claim 1, wherein before receiving the capability report message sent by the terminal, further comprising:

and sending a capability query message to the terminal.

5. A method for configuring a demodulation reference signal (DMRS) is applied to a terminal, and is characterized by comprising the following steps:

receiving DMRS configuration information issued by the base station according to the capability report message, and configuring a target DMRS type adopted by the terminal according to the DMRS configuration information;

when the motion state of the terminal indicates that the terminal is in a preset high-speed motion state, the target DMRS type is a 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;

6. The method of claim 5,

7. The method of claim 5 or 6,

the capability reporting message is further used for indicating the additional DMRS types supported by the terminal, and the additional DMRS types comprise 1 preposed DMRS and at least one additional DMRS.

8. The method of claim 7, wherein prior to sending the capability reporting message, further comprising:

and receiving a capability inquiry message sent by the base station.

9. A base station, comprising:

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

wherein the determining module is further configured to:

acquiring the motion state of the terminal; when the motion state indicates that the terminal is in a preset high-speed motion state, determining that a target DMRS type adopted by the terminal is a second DMRS type;

10. A base station comprising a transceiver and a processor, wherein,

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

the processor is further configured to:

acquiring the motion state of the terminal;

11. A base station, comprising: processor, memory and program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the steps of the method of configuring a demodulation reference signal, DMRS, as claimed in any one of claims 1 to 4.

12. A terminal, comprising:

the configuration module is used for receiving DMRS configuration information issued by the base station according to the capability report message and configuring a target DMRS type adopted by the terminal according to the DMRS configuration information;

13. A terminal comprising a transceiver and a processor, wherein,

the transceiver is configured to send a capability reporting message to a base station, where the capability reporting 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; and receiving DMRS configuration information transmitted by the base station according to the capability report message;

the processor is used for configuring a target DMRS type adopted by the terminal according to the DMRS configuration information;

14. A terminal, comprising: processor, memory and program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the steps of the method for configuring a demodulation reference signal, DMRS, according to any one of claims 5 to 8.

15. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, implements the steps of the method for configuring a demodulation reference signal, DMRS, as defined in any one of claims 1 to 8.