CN109525999B

CN109525999B - DMRS (demodulation reference signal) determining method, configuration method, terminal and base station

Info

Publication number: CN109525999B
Application number: CN201710841626.9A
Authority: CN
Inventors: 鲁智; 沈晓冬
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2017-09-18
Filing date: 2017-09-18
Publication date: 2021-09-24
Anticipated expiration: 2037-09-18
Also published as: CN109525999A

Abstract

The invention provides a DMRS (demodulation reference signal) determining method, a DMRS configuring method, a terminal and a base station. The DMRS determination method applied to the terminal comprises the following steps: determining the number of symbols of the DMRS according to transmission parameters configured by a base station, wherein the transmission parameters comprise: and the number range of UCI load carried by the PUCCH, the content type of UCI carried by the PUCCH, the number of symbols of the PUCCH, the state of a frequency hopping switch of the PUCCH and the multiplexing capability of the PUCCH. In the invention, the terminal can determine the number of symbols of the DMRS so as to determine the pattern of the DMRS, and can transmit the PUCCH information according to the pattern of the DMRS, so that the PUCCH meets the requirement of better transmission performance.

Description

DMRS (demodulation reference signal) determining method, configuration method, terminal and base station

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a Demodulation Reference Signal (DMRS) determination method, a Demodulation Reference Signal (DMRS) configuration method, a terminal, and a base station.

Background

Compared with the existing mobile communication system, the future 5G mobile communication system needs to adapt to more diversified scenes and service requirements. The main scenes of 5G include Mobile Broadband enhancement (eMBB), Ultra-high-reliability and Low-Latency Communications (URLLC), and large-scale internet of things (mtc), and these scenes provide requirements for the system such as high reliability, Low Latency, large bandwidth, and wide coverage.

In LTE, there are multiple Physical Uplink Control CHannel (PUCCH) formats to support different Uplink Control Information (UCI) payloads. Herein, for PUCCH format 1x series, 6 Demodulation Reference Signal (DMRS) symbols are configured, for PUCCH format 2x/3 series, 4 DMRS symbols are configured, and for PUCCH format 4/5, 2 DMRS symbols are configured.

In 5G New Radio (NR), PUCCH formats of different lengths are defined for supporting different UCI payloads, but there is no theory on how to determine the number of symbols and patterns of DMRSs.

Disclosure of Invention

The embodiment of the invention provides a DMRS (demodulation reference signal) determining method, a DMRS configuring method, a terminal and a base station, which are used for determining the number of symbols of DMRS in NR.

In order to solve the foregoing technical problem, in a first aspect, an embodiment of the present invention provides a DMRS determining method, which is applied to a terminal, and includes: determining the number of symbols of the DMRS according to transmission parameters configured by a base station, wherein the transmission parameters comprise: and the number range of UCI load carried by the PUCCH, the content type of UCI carried by the PUCCH, the number of symbols of the PUCCH, the state of a frequency hopping switch of the PUCCH and the multiplexing capability of the PUCCH.

In a second aspect, an embodiment of the present invention provides a DMRS determination method, which is applied to a terminal, and includes:

determining the number of symbols of DMRS according to PUCCH formats configured by a base station, wherein each PUCCH format corresponds to the number of symbols of one DMRS, the PUCCH formats are determined by the base station according to transmission parameters, and the transmission parameters comprise: and the number range of UCI load carried by the PUCCH, the content type of UCI carried by the PUCCH, the number of symbols of the PUCCH, the state of a frequency hopping switch of the PUCCH, the multiplexing capability of the PUCCH, the moving speed of the terminal and the delay spread of the channel.

In a third aspect, an embodiment of the present invention provides a DMRS configuration method applied to a base station, including:

configuring transmission parameters to a terminal, wherein the transmission parameters comprise: and the number range of UCI load carried by the PUCCH, the content type of UCI carried by the PUCCH, the number of symbols of the PUCCH, the state of a frequency hopping switch of the PUCCH and the multiplexing capability of the PUCCH.

In a fourth aspect, an embodiment of the present invention provides a DMRS configuration method, applied to a base station, including:

determining PUCCH formats corresponding to the terminals according to transmission parameters, wherein each PUCCH format corresponds to the number of symbols of a DMRS, and the transmission parameters comprise: at least one of the UCI load number range carried by the PUCCH, the content type of the UCI carried by the PUCCH, the symbol number of the PUCCH, the state of a frequency hopping switch of the PUCCH, the multiplexing capability of the PUCCH, the moving speed of a terminal and the delay expansion of a channel;

and configuring a corresponding PUCCH format to the terminal.

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

a first determining module, configured to determine, according to a transmission parameter configured by a base station, a symbol number of a DMRS, where the transmission parameter includes: and the number range of UCI load carried by the PUCCH, the content type of UCI carried by the PUCCH, the number of symbols of the PUCCH, the state of a frequency hopping switch of the PUCCH and the multiplexing capability of the PUCCH.

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

a second determining module, configured to determine, according to PUCCH formats configured by the base station, the number of symbols for DMRSs, where each PUCCH format corresponds to the number of symbols for a DMRS, and the PUCCH formats are determined by the base station according to transmission parameters, where the transmission parameters include: and the number range of UCI load carried by the PUCCH, the content type of UCI carried by the PUCCH, the number of symbols of the PUCCH, the state of a frequency hopping switch of the PUCCH, the multiplexing capability of the PUCCH, the moving speed of the terminal and the delay spread of the channel.

In a seventh aspect, an embodiment of the present invention provides a base station, including:

a first sending module, configured to configure a transmission parameter to a terminal, where the transmission parameter includes: and the number range of UCI load carried by the PUCCH, the content type of UCI carried by the PUCCH, the number of symbols of the PUCCH, the state of a frequency hopping switch of the PUCCH and the multiplexing capability of the PUCCH.

In an eighth aspect, an embodiment of the present invention provides a base station, including:

a third determining module, configured to determine, according to a transmission parameter, PUCCH formats corresponding to the terminal, where each PUCCH format corresponds to a symbol number of a DMRS, and the transmission parameter includes: at least one of the UCI load number range carried by the PUCCH, the content type of the UCI carried by the PUCCH, the symbol number of the PUCCH, the state of a frequency hopping switch of the PUCCH, the multiplexing capability of the PUCCH, the moving speed of a terminal and the delay expansion of a channel;

and the second sending module is used for configuring the corresponding PUCCH format to the terminal.

In a ninth aspect, an embodiment of the present invention provides a terminal, including a processor, a memory, and a computer program stored on the memory and operable on the processor, where the computer program, when executed by the processor, implements the steps of the above DMRS determination method.

In a tenth aspect, an embodiment of the present invention provides a base station, including a processor, a memory, and a computer program stored on the memory and operable on the processor, where the computer program, when executed by the processor, implements the steps of the above DMRS configuration method.

In an eleventh aspect, embodiments of the present invention provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the above DMRS determination method.

In a twelfth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when executed by a processor, the computer program implements the steps of the DMRS configuration method described above.

In this way, in the embodiment of the present invention, the terminal can determine the number of symbols of the DMRS according to the transmission parameter configured by the base station or the PUCCH format, thereby determining the pattern of the DMRS, and can transmit PUCCH information according to the pattern of the DMRS, so that the PUCCH meets the requirement for better transmission performance.

Drawings

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

Fig. 1 is a schematic diagram of a DMRS determination method according to a first embodiment of the present invention;

fig. 2 is a schematic diagram illustrating a relationship between a UCI payload number range carried by a PUCCH and a DMRS symbol number according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a DMRS configuration method according to a second embodiment of the present invention;

fig. 4 is a schematic diagram of a DMRS determination method according to a third embodiment of the present invention;

fig. 5 is a schematic diagram of a DMRS configuration method according to a fourth embodiment of the present invention;

fig. 6 is a schematic structural diagram of a terminal according to a fifth embodiment of the present invention;

fig. 7 is a schematic structural diagram of a base station according to a sixth embodiment of the present invention;

fig. 8 is a schematic structural diagram of a terminal according to a seventh embodiment of the present invention;

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

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

fig. 11 is a schematic structural diagram of a base station according to a tenth embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.

Referring to fig. 1, fig. 1 is a schematic diagram of a DMRS determination method according to a first embodiment of the present invention, where the DMRS determination method is applied to a terminal, and includes:

step 11: determining the number of symbols of the DMRS according to transmission parameters configured by a base station, wherein the transmission parameters comprise: and the number range of UCI load carried by the PUCCH, the content type of UCI carried by the PUCCH, the number of symbols of the PUCCH, the state of a frequency hopping switch of the PUCCH and the multiplexing capability of the PUCCH. The configuration of the transmission parameters is related to the transmission mode, e.g., transmit diversity or spatial multiplexing, indicated by the base station for the terminal.

Through the DMRS determining method provided by the embodiment of the invention, the terminal can determine the number of symbols of the DMRS according to the transmission parameters configured by the base station, so as to determine the pattern of the DMRS, and can transmit the PUCCH information according to the pattern of the DMRS, so that the PUCCH meets the requirement of better transmission performance.

That is, in some embodiments of the present invention, after the step of determining the number of symbols of the DMRS, the terminal may further determine a pattern of the DMRS according to the number of symbols of the DMRS, and perform transmission of PUCCH information according to the pattern of the DMRS.

In the embodiment of the present invention, preferably, the position where the DMRS is mapped to the physical resource may be agreed by a protocol. Or the location where the DMRS is mapped to the physical resource may be dynamically or semi-statically indicated by the base station.

The following describes the relationship between the transmission parameters and the number of DMRS symbols.

(1) UCI load number range carried by PUCCH

In the embodiment of the present invention, the UCI payload number range carried by the PUCCH may be determined by the base station according to a Transmission (TM) mode indicated to the terminal.

The transmission mode may be, for example, transmit diversity or spatial multiplexing, etc. For example, when transmit diversity is used, the number of UCI payloads required is small, and when spatial multiplexing supports 16 or more layers of transmission, the number of UCI payloads required is large.

For example, the UCI payload number may be divided into two intervals, where the UCI payload number less than or equal to 60bits belongs to a payload number range (may be referred to as a small payload range), and the UCI payload number greater than 60bits belongs to a payload number range (may be referred to as a large payload range). Of course, the method of dividing the UCI payload number range is not limited thereto.

In the embodiment of the present invention, preferably, the step of determining the number of symbols of the DMRS according to the transmission parameter configured by the base station includes: and determining the symbol number of the DMRS according to the transmission parameters at least comprising the UCI load number range carried by the PUCCH, wherein the determined symbol number of the DMRS is inversely related to the value corresponding to the UCI load number range.

The negative correlation means that the number of symbols of the DMRS decreases as the number of values corresponding to the UCI payload number range increases. That is, the larger the number corresponding to the UCI payload number range number is, the smaller the number of symbols of the DMRS is. The smaller the value corresponding to the UCI load number range number is, the larger the symbol number of the DMRS is. When the number of the UCI load ranges is set to be larger and the number of the symbols of the DMRS is smaller, more resources can be adopted to bear the UCI load, so that the code rate of the coding is reduced, and the performance of the coding is improved. When the value corresponding to the UCI payload number range is small and the DMRS symbol number is large, the channel estimation performance may be improved according to the number of DMRS symbols (also referred to as DMRS density).

In some preferred embodiments of the present invention, the determining the number of symbols of the DMRS according to the transmission parameters at least including the UCI payload carried by the PUCCH may include: when the UCI load range is smaller than or equal to a preset threshold value, determining the symbol number of the DMRS as a first numerical value; and when the UCI load range is greater than the preset threshold value, determining the number of symbols of the DMRS as a second numerical value, wherein the second numerical value is smaller than the first numerical value.

The preset threshold may be determined as needed, for example, may be 60bits, the first value may be 4, and the second value may be 2.

Referring to fig. 2, for example, in an embodiment of the present invention, the number of symbols of the PUCCH is 14, and referring to fig. 2 (a), when the payload number range of the UCI is greater than 60bits, the number of symbols of the DMRS is 2. Referring to (b) and (c) of fig. 2, when the payload number range of the UCI is a range of 60bits or less, the number of symbols of the DMRS is 4. And (b) and (c) are different in that the locations where the DMRSs are mapped to the physical resources are different, and the locations where the DMRSs are mapped to the physical resources may be agreed by a protocol. Or the location of the DMRS may also be dynamically or semi-statically indicated by the base station.

Of course, in some other embodiments of the present invention, when the transmission parameters include other transmission parameters in addition to the UCI load number range carried by the PUCCH, the determined symbol number of the DMRS is not limited to be negatively correlated with only the value corresponding to the UCI load number range, and the determined symbol number of the DMRS may also be affected by other transmission parameters, so that different UCI load number ranges may also correspond to the same symbol number of the DMRS, and even the determined symbol number of the DMRS may also be positively correlated with the value corresponding to the UCI load number range.

(2) Content type of UCI carried by PUCCH

The content type of the UCI carried by the PUCCH may include at least one of ACK/NACK, Rank Indication (RI), Scheduling Request (SR), Channel Quality Indication (CQI), Precoding Matrix Indication (PMI), and the like.

Since the requirement for block error rate (BLER) may be different for each content type, the number of symbols using different DMRSs may be considered.

That is, in the embodiment of the present invention, the number of symbols of the DMRS may be determined according to a transmission parameter at least including a content type of the UCI carried by the PUCCH.

For example, in some embodiments, the requirement for BLER is high for ACK/NACK, RI, SR, etc., e.g., BLER is required to be 1%; for CQI, PMI, and the like, the requirement for BLER is low, for example, 10% BLER is required.

Thus, in some preferred embodiments of the present invention, the method for determining the number of symbols of the DMRS, in particular according to the transmission parameters at least including the content type of the UCI carried by the PUCCH, may be:

determining the number of symbols of the DMRS as a third value when the content type of the UCI includes a first type content and does not include a second type content, wherein the first type content includes at least one of ACK/NACK, RI and SR, and the second type content includes at least one of CQI and PMI;

when the content type of the UCI comprises the second type content and does not comprise the first type content, determining the number of symbols of the DMRS as a fourth value, wherein the fourth value is smaller than the third value;

when the content type of the UCI includes a first type of content and a second type of content, determining the number of symbols of the DMRS to be a third value or a fourth value.

That is, for the content type of UCI with higher BLER requirement, such as ACK/NACK, RI, and SR, a larger number of symbols of DMRS (i.e., a higher DMRS density) may be used to improve the performance of channel estimation, and for the content type of UCI with lower BLER requirement, such as CQI and PMI, a smaller number of symbols of DMRS (i.e., a lower DMRS density and more UCI resources) may be used to reduce the coding rate and improve the performance of coding.

And, for the UCI including both the first type content and the second type content, the number of symbols of the DMRS may be selected as needed. For example, the number of symbols of the DMRS may be determined with reference to other parameters among the transmission parameters.

Of course, it should be noted that, when the transmission parameters include other transmission parameters in addition to the content type of the UCI carried by the PUCCH, the number of symbols of the determined DMRS is not limited to the above determination manner, and the number of symbols of the determined DMRS may also be affected by other transmission parameters. Even more, the number of symbols of the DMRS, which is determined when the content type of the UCI includes the first type content and does not include the second type content, is less than the number of symbols of the DMRS, which is determined when the content type of the UCI includes the second type content and does not include the first type content.

(3) Number of symbols of PUCCH

In the NR system, the number of PUCCH symbols may range from 4 to 14, but in other future communication systems, the number of PUCCH symbols may range from other values.

In the embodiment of the present invention, preferably, when the number of DMRS symbols is determined according to a transmission parameter at least including the number of PUCCH symbols, the determined number of DMRS symbols is positively correlated with the number of PUCCH symbols.

That is, when the number of PUCCH symbols is large, the number of DMRS employed may be large, and when the number of PUCCH symbols is small, the number of DMRS employed may be small.

Of course, when the transmission parameters include other transmission parameters besides the number of PUCCH symbols, the number of determined DMRS symbols is not limited to be positively correlated with the number of PUCCH symbols, the number of determined DMRS symbols may be affected by other transmission parameters, and in some cases, the number of PUCCH symbols may be different, and the number of determined DMRS symbols may be the same. Even the case may occur where a larger number of PUCCH symbols corresponds to a smaller number of DMRS symbols, and a smaller number of PUCCH symbols corresponds to a larger number of DMRS symbols.

(4) State of frequency hopping switch of PUCCH

The frequency hopping switch of the PUCCH has two states of opening and closing.

Whether a frequency hopping switch of the PUCCH is opened or closed is mainly related to the moving speed of the terminal, when the moving speed of the terminal is high, the frequency hopping switch of the PUCCH is opened to obtain good channel performance, and meanwhile, more symbols of the corresponding DMRS are needed to improve the performance of channel estimation, when the moving speed of the terminal is low, the frequency hopping switch of the PUCCH can be closed, and at the moment, the number of symbols of the corresponding DMRS is small to reduce the code rate of coding and improve the performance of coding.

Of course, it should be noted that, when the transmission parameters include other transmission parameters besides the state of the frequency hopping switch of the PUCCH, the number of symbols of the determined DMRS is not limited to be related to the state of the frequency hopping switch of the PUCCH, and the number of symbols of the determined DMRS may also be affected by other transmission parameters. Even the case may occur where the PUCCH frequency hopping switch is turned on for a smaller number of DMRS symbols, and the PUCCH frequency hopping switch is turned off for a larger number of DMRS symbols.

(5) PUCCH multiplexing capability or non-multiplexing capability

The multiplexing capability of the PUCCH means that information of different terminals can be transmitted on the same resource, and the non-multiplexing capability means that only information of the same terminal can be transmitted on the same resource.

In general, the PUCCH multiplexing capability can be improved by a large number of DMRS symbols using orthogonal cover masks (OCC), which can be reported to the terminal dynamically or semi-statically by the base station, and the PUCCH having no multiplexing capability can correspond to a small number of DMRS symbols.

Of course, when the transmission parameters include other transmission parameters besides the multiplexing capability of the PUCCH, the number of symbols of the determined DMRS is not limited to be related to the multiplexing capability of the PUCCH, and the number of symbols of the determined DMRS may be affected by other transmission parameters. Even when the PUCCH has multiplexing capability, the PUCCH may correspond to a smaller number of DMRS symbols, whereas the PUCCH has no multiplexing capability, the PUCCH may correspond to a larger number of DMRS symbols.

In a preferred embodiment of the present invention, the terminal determines the number of symbols of the DMRS simultaneously according to five transmission parameters, i.e., a UCI payload number range carried by the PUCCH, a content type of the UCI carried by the PUCCH, the number of symbols of the PUCCH, a state of a frequency hopping switch of the PUCCH, and the presence or absence of multiplexing capability of the PUCCH.

Please refer to table 1:

TABLE 1

And if the PUCCH only supports one-time frequency hopping, the DMRS number of each frequency hopping is the number of DMRS symbols included by half or approximately half of the symbol number of the PUCCH. That is, when the number of DMRS per frequency hop is 1, the number of DMRS symbols included in the PUCCH is 2, and when the number of DMRS per frequency hop is 2, the number of DMRS symbols included in the PUCCH is 4. When frequency hopping is off, each frequency hop refers to a number of symbols equal to or approximately equal to one-half of the PUCCH, and frequency hopping is still used here for convenience of description. In the table, x1 is a range threshold corresponding to the UCI payload number range, and y1 is a range threshold corresponding to the PUCCH symbol number.

Referring to fig. 3, the present invention further provides a DMRS configuration method applied to a base station, including:

step 31: configuring transmission parameters to a terminal, wherein the transmission parameters comprise: and the number range of UCI load carried by the PUCCH, the content type of UCI carried by the PUCCH, the number of symbols of the PUCCH, the state of a frequency hopping switch of the PUCCH and the multiplexing capability of the PUCCH.

Through the DMRS configuration method provided by the embodiment of the invention, the base station can configure the transmission parameters for the terminal, so that the terminal can determine the symbol number of the DMRS according to the transmission parameters configured by the base station, thereby determining the pattern of the DMRS, and can transmit the PUCCH information according to the pattern of the DMRS, so that the PUCCH meets the requirement of better transmission performance. That is, in the embodiment of the present invention, the base station does not need to notify the number of symbols of the DMRS, but the base station is determined by the terminal.

Referring to fig. 4, the present invention further provides a DMRS determining method applied to a terminal, including:

step 41: determining the number of symbols of DMRS according to PUCCH formats configured by a base station, wherein each PUCCH format corresponds to the number of symbols of one DMRS, the PUCCH formats are determined by the base station according to transmission parameters, and the transmission parameters comprise: and the number range of UCI load carried by the PUCCH, the content type of UCI carried by the PUCCH, the number of symbols of the PUCCH, the state of a frequency hopping switch of the PUCCH, the multiplexing capability of the PUCCH, the moving speed of the terminal and the delay spread of the channel.

By the method for determining the DMRS, the terminal can determine the number of symbols of the DMRS according to the PUCCH format configured by the base station and the corresponding relation between the PUCCH format and the DMRS, so that the pattern of the DMRS is determined, and the PUCCH information can be transmitted according to the pattern of the DMRS, so that the PUCCH meets the requirement of better transmission performance.

In the embodiment of the invention, each PUCCH format corresponds to the number of symbols of one DMRS, and the numbers of the symbols of the DMRS corresponding to different PUCCH formats can be the same or different.

In the embodiment of the present invention, preferably, the correspondence between the PUCCH format and the number of symbols of the DMRS may be predetermined by a protocol or dynamically or semi-statically indicated by the base station. The terminal can directly determine the number of symbols of the DMRS according to the PUCCH format configured by the base station, so that processes such as analysis of transmission parameters and the like are not needed, and the processing complexity of the terminal is reduced.

The correspondence between the PUCCH format and the number of symbols of the DMRS may be, for example, as shown in table 2:

TABLE 2

And if the PUCCH only supports one-time frequency hopping, the DMRS number of each frequency hopping is the number of DMRS symbols included by half or approximately half of the symbol number of the PUCCH. That is, when the number of DMRS per frequency hop is 1, the number of DMRS symbols included in the PUCCH is 2, and when the number of DMRS per frequency hop is 2, the number of DMRS symbols included in the PUCCH is 4. When frequency hopping is off, each frequency hop refers to a number of symbols equal to or approximately equal to one-half of the PUCCH, and frequency hopping is still used here for convenience of description.

In the embodiment of the present invention, preferably, the position where the DMRS is mapped to the physical resource may be agreed by a protocol or dynamically or semi-statically indicated by the base station.

Referring to fig. 5, the present invention further provides a DMRS configuration method applied to a base station, including:

step 51: determining PUCCH formats corresponding to the terminals according to transmission parameters, wherein each PUCCH format corresponds to the number of symbols of a DMRS, and the transmission parameters comprise: at least one of the UCI load number range carried by the PUCCH, the content type of the UCI carried by the PUCCH, the symbol number of the PUCCH, the state of a frequency hopping switch of the PUCCH, the multiplexing capability of the PUCCH, the moving speed of a terminal and the delay expansion of a channel;

step 52: and configuring a corresponding PUCCH format to the terminal.

Through the DMRS configuration method provided by the embodiment of the invention, the base station can determine the PUCCH format configured to the terminal according to the transmission parameters, so that the terminal can determine the symbol number of the DMRS according to the corresponding relation between the symbol number of the DMRS and the PUCCH format to determine the pattern of the DMRS, and can transmit PUCCH information according to the pattern of the DMRS, so that the PUCCH meets the requirement of better transmission performance.

In the embodiment of the present invention, preferably, the correspondence between the PUCCH format and the number of symbols of the DMRS may be predetermined by a protocol or dynamically or semi-statically indicated by the base station.

In the embodiment of the present invention, preferably, the step of determining, according to the transmission parameter, the PUCCH format corresponding to the terminal includes:

determining the number of symbols of the corresponding DMRS according to the transmission parameters;

and determining the PUCCH format corresponding to the terminal according to the number of the symbols of the DMRS.

Specifically, after the DMRS symbol number is determined, the PUCCH format corresponding to the terminal may be determined according to the correspondence between the DMRS symbol number and the PUCCH format. Referring to table 2, the same DMRS symbol number may correspond to multiple PUCCH formats, and in the embodiment of the present invention, when selecting a PUCCH format corresponding to a terminal, the only one PUCCH format corresponding to the terminal needs to be determined by considering other reasons, for example, the PUCCH symbol number, in addition to the DMRS symbol number.

(1) UCI load number range carried by PUCCH

In the embodiment of the present invention, the UCI payload number range carried by the PUCCH may be determined by a Transmission (TM) mode indicated to the terminal by the base station.

In this embodiment of the present invention, preferably, the step of determining, according to the transmission parameter, the number of symbols of the corresponding DMRS includes:

and determining the symbol number of the DMRS according to the transmission parameters at least comprising the UCI load number range carried by the PUCCH, wherein the symbol number of the DMRS is inversely related to the value corresponding to the UCI load number range.

In some preferred embodiments of the present invention, the determining the number of symbols of the DMRS according to the transmission parameters at least including the UCI payload carried by the PUCCH may include: when the UCI load is smaller than or equal to the range of a preset threshold value, determining the number of symbols of the DMRS as a first numerical value; and when the UCI load range is greater than the preset threshold value, determining the number of symbols of the DMRS as a second numerical value, wherein the second numerical value is smaller than the first numerical value.

(2) Content type of UCI carried by PUCCH

The content type of UCI carried by the PUCCH may include at least one of ACK/NACK, RI, scheduling request SR, CQI, PMI, and the like.

Since the BLER requirement may be different for each content type, the number of symbols with different DMRSs may be considered.

Thus, in some preferred embodiments of the present invention, the step of determining the number of symbols of the corresponding DMRS according to the transmission parameter includes:

determining the number of symbols of the DMRS according to transmission parameters at least comprising the content type of UCI carried by the PUCCH;

determining the number of symbols of the DMRS as a third numerical value when the content type of the UCI comprises a first type content and does not comprise a second type content, wherein the first type content comprises at least one of ACK/NACK, RI and SR;

when the content type of the UCI comprises the second type content and does not comprise the first type content, determining the number of symbols of the DMRS as a fourth numerical value, wherein the second type content comprises at least one of CQI and PMI, and the fourth numerical value is smaller than the third numerical value;

The following describes a correspondence relationship between a content type of a UCI carried by a PUCCH and a PUCCH format, by way of example.

In some embodiments, when the content type of the UCI includes ACK/NACK and CQI is not included, the configured PUCCH format may be as shown in table 3:

TABLE 3

Wherein, the number of DMRS per frequency hop is half of the number of DMRS symbols included in the PUCCH. That is, when the number of DMRS per frequency hop is 1, the number of DMRS symbols included in the PUCCH is 2, and when the number of DMRS per frequency hop is 2, the number of DMRS symbols included in the PUCCH is 4.

When the content type of the UCI includes CQI and ACK/NACK is not included, the configured PUCCH format may be as shown in table 4:

TABLE 4

When the content type of the UCI includes ACK/NACK and CQI, the configured PUCCH format may be as shown in table 5:

TABLE 5

(3) Number of symbols of PUCCH

(4) State of frequency hopping switch of PUCCH

(5) PUCCH multiplexing capability or non-multiplexing capability

In general, the number of symbols of DMRS is large, and the multiplexing capability of PUCCH can be improved by orthogonal cover mask (OCC), which can be reported to the terminal dynamically or semi-statically by the base station, but the number of symbols of DMRS is small when PUCCH has no multiplexing capability.

(6) Moving speed of terminal

In the embodiment of the present invention, preferably, when the moving speed of the terminal is higher, a corresponding number of symbols of the DMRS is required to be greater, so as to improve the performance of channel estimation, and when the moving speed of the terminal is lower, a corresponding number of symbols of the DMRS is less, so as to reduce the code rate of coding and improve the performance of coding.

Of course, when the transmission parameters include other transmission parameters in addition to the mobile speed of the terminal, the number of symbols of the determined DMRS is not limited to be related to the mobile speed of the terminal, and the number of symbols of the determined DMRS may be affected by other transmission parameters. Even when the mobile speed of the terminal is high, the terminal may correspond to a small number of DMRS symbols, and when the mobile speed of the terminal is low, the terminal may correspond to a large number of DMRS symbols.

(8) Delay spread of channel

In the embodiment of the invention, preferably, when the delay spread of the channel is larger, more symbols of the DMRS can be corresponded to improve the performance of channel estimation, and when the delay spread of the channel is smaller, less symbols of the DMRS can be corresponded to, and at this time, better channel estimation performance can be obtained.

Of course, it should be noted that, when the transmission parameters include other transmission parameters besides the delay spread of the channel, the number of symbols of the determined DMRS is not limited to be related to the delay spread of the channel, and the number of symbols of the determined DMRS may also be affected by other transmission parameters. Even when the delay spread of the channel is large, the number of symbols of the DMRS is small, and when the delay spread of the channel is small, the number of symbols of the DMRS is large.

In a preferred embodiment of the present invention, the base station may determine the PUCCH format corresponding to the terminal according to seven transmission parameters, which are the UCI payload number range carried by the PUCCH, the content type of the UCI carried by the PUCCH, the number of symbols of the PUCCH, the state of a frequency hopping switch of the PUCCH, the multiplexing capability of the PUCCH, the moving speed of the terminal, and the delay spread of the channel.

Please refer to table 6:

TABLE 6

In the table, M represents the moving speed of the terminal, N represents the delay spread of the channel, X represents the range of UCI payload number carried by the PUCCH, Y represents the symbol number of the PUCCH, Z represents the state of the frequency hopping switch of the UCCH, K represents the presence or absence of multiplexing capability of the PUCCH, and P represents the content type of UCI carried by the PUCCH.

The base station may determine the PUCCH format configured for the terminal according to table 6. For example, when the transmission parameters of a terminal are (Ma11, Na11, Xa11, Ya11, Za11, Pa11), the base station configures PUCCH Format a1 for the terminal.

Next, through a simulation experiment, simulation is performed on PUCCH performance requirements under the condition that different transmission parameters (UCI load number range carried by PUCCH, PUCCH symbol number, state of frequency hopping switch of PUCCH, moving speed of terminal and delay spread of channel) and different DRMS symbol (symbol) numbers are adopted.

Referring to table 7, table 7 shows the signal-to-noise ratio (SNR) required by PUCCH to reach 1% BLER at different DMRS symbol numbers under the UCI load of 20bits when the frequency hopping switch of PUCCH is turned on.

TABLE 7

Here, the "condition" in the first row and the first column in table 7 refers to transmission parameters in a first column and a second column, the first column is a mobile speed (e.g., 3km/h) of a terminal and a delay spread (e.g., 300ns) of a channel, the second column is a number of DMRSs per frequency hop (symbols), 1RS/hop indicates that the number of DMRSs per frequency hop is 1, which corresponds to a PUCCH including 2 DMRSs. 2RS/hop indicates that the number of DMRSs per frequency hop is 2, which is equivalent to that the PUCCH comprises 4 DMRSs. The first row, columns 3-6 in table 7 indicate the number of symbols of PUCCH, 8, 10, 12 and 14 respectively. Lines 2-8 and columns 3-6 in Table 7 indicate the required SNR in dB.

As can be seen from the simulation results in table 7, for the UCI payload of 20bits, the performance requirement of PUCCH smaller than 12 symbols is that 1 DMRS per frequency hop (in this case, PUCCH has 2 DMRS) has better performance. For the 12-14 symbol PUCCH, 2 DMRSs per frequency hop (in this case 4 DMRSs for PUCCH) has better performance.

Referring to table 8, table 8 shows the signal-to-noise ratio (SNR) required by PUCCH to reach 1% BLER at different DMRS symbol numbers under the UCI load of 60bits when the frequency hopping switch of PUCCH is turned on.

TABLE 8

Wherein, the "condition" of the first row and the first column in table 8 refers to transmission parameters in the first column and the second column, the first column is the mobile speed of the terminal (e.g. 3km/h) and the delay spread of the channel (e.g. 300ns), the second column is the number of symbols of DMRSs per frequency hop, 1RS/hop indicates that the number of DMRSs per frequency hop is 1, which corresponds to the PUCCH including 2 DMRSs. 2RS/hop indicates that the number of DMRSs per frequency hop is 2, which is equivalent to that the PUCCH comprises 4 DMRSs. The first row, columns 3-6 in table 8 indicate the number of symbols of PUCCH, 8, 10, 12, and 14, respectively. Lines 2-8 and columns 3-6 in Table 8 indicate the required SNR in dB.

As can be seen from the simulation results in table 8, for the UCI payload of 60bits, when the channel delay spread is large, 1 DMRS per frequency hop (at this time, the PUCCH has 2 DMRSs) has better performance. But when the channel delay spread is medium delay spread, for PUCCH cases smaller than 12 symbols, 1 DMRS per frequency hop (in this case 2 DMRS for PUCCH) has better performance. For PUCCH of 12-14 symbols, 2 DMRSs per frequency hop (in this case 4 DMRSs for PUCCH) has better performance.

Referring to table 9, table 9 shows the signal-to-noise ratio (SNR) required by PUCCH to reach 1% BLER at different DMRS symbol numbers under the UCI load of 100bits when the frequency hopping switch of PUCCH is turned on.

TABLE 9

Wherein, the "condition" of the first row and the first column in table 9 refers to transmission parameters in the first column and the second column, the first column is the mobile speed of the terminal (e.g. 3km/h) and the delay spread of the channel (e.g. 300ns), the second column is the number of symbols of DMRSs per frequency hop, 1RS/hop indicates that the number of DMRSs per frequency hop is 1, which corresponds to the PUCCH including 2 DMRSs. 2RS/hop indicates that the number of DMRSs per frequency hop is 2, which is equivalent to that the PUCCH comprises 4 DMRSs. The first row, columns 3-6 in table 9 indicate the number of symbols of PUCCH, 8, 10, 12 and 14 respectively. Lines 2-4 and columns 3-6 in Table 9 indicate the required SNR in dB.

As can be seen from the simulation results in table 9, for a UCI load of 100bits, 1RS per frequency hop (at this time, PUCCH has 2 DMRS) shows better performance for all cases.

Referring to table 10, table 10 shows the signal-to-noise ratio (SNR) required by PUCCH to reach 1% BLER at different DMRS symbol numbers under UCI load of 20bits when the hopping switch of PUCCH is turned off.

Watch 10

Here, the "condition" in the first row and the first column in table 10 refers to a transmission parameter in the first column and the second column, and the first column is the mobile speed of the terminal (e.g., 3km/h), the delay spread of the channel (e.g., 300ns), and the number of DMRSs included in the second column PUCCH in the non-frequency hopping case (w/o FH). The first row, columns 3-6 in table 10 indicate the number of symbols of PUCCH, 8, 10, 12 and 14 respectively. Lines 2-4 and columns 3-6 in Table 3 indicate the required SNR in dB.

Table 10 gives the PUCCH performance when the frequency hopping switch of the PUCCH is off. When the channel delay spread is medium or small, the PUCCH has 2 DMRSs with better performance. But when the channel delay spread is large, the PUCCH has 2 DMRSs with better performance for PUCCH smaller than 12 symbols. For the PUCCH of 12-14 symbols, the PUCCH has 4 DMRSs with better performance.

In addition, simulation shows that when the frequency hopping switch of the PUCCH is turned off, the PUCCH cannot provide sufficient performance gain for the case where the number of payloads is high (e.g., 100bits), or the terminal has a high moving speed (e.g., 120 km/h).

Based on the same inventive concept, please refer to fig. 6, an embodiment of the present invention further provides a terminal 60, where the terminal 60 includes:

a first determining module 61, configured to determine, according to a transmission parameter configured by a base station, a symbol number of a DMRS, where the transmission parameter includes: and the number range of UCI load carried by the PUCCH, the content type of UCI carried by the PUCCH, the number of symbols of the PUCCH, the state of a frequency hopping switch of the PUCCH and the multiplexing capability of the PUCCH.

The terminal of the embodiment of the invention can determine the number of symbols of the DMRS according to the transmission parameters configured by the base station, thereby determining the pattern of the DMRS, and can transmit the PUCCH information according to the pattern of the DMRS, so that the PUCCH meets the requirement of better transmission performance.

In some preferred embodiments, the first determining module 61 is further configured to determine, according to a transmission parameter at least including a UCI payload number range carried by the PUCCH, a symbol number of the DMRS, where the determined symbol number of the DMRS is inversely related to a value corresponding to the UCI payload number range.

In some preferred embodiments, the first determining module 61 is further configured to determine the number of symbols of the DMRS to be a first value when the UCI payload number range is a range smaller than or equal to a preset threshold; and when the UCI load number range is greater than the preset threshold value, determining the symbol number of the DMRS as a second numerical value, wherein the second numerical value is smaller than the first numerical value.

In some preferred embodiments, the first determining module 61 is further configured to determine, according to a transmission parameter at least including a content type of UCI carried by the PUCCH, a symbol number of the DMRS; determining the number of symbols of the DMRS as a third value when the content type of the UCI comprises a first type content and does not comprise a second type content, wherein the first type content comprises at least one of ACK/NACK, RI and SR, and the second type content comprises at least one of CQI and PMI; when the content type of the UCI comprises the second type content and does not comprise the first type content, determining the number of symbols of the DMRS as a fourth value, wherein the fourth value is smaller than the third value; when the content type of the UCI includes a first type of content and a second type of content, determining the number of symbols of the DMRS to be a third value or a fourth value.

Referring to fig. 7, a sixth embodiment of the present invention further provides a base station 70, where the base station 70 includes:

a first sending module 71, configured to configure transmission parameters to a terminal, where the transmission parameters include: and the number range of UCI load carried by the PUCCH, the content type of UCI carried by the PUCCH, the number of symbols of the PUCCH, the state of a frequency hopping switch of the PUCCH and the multiplexing capability of the PUCCH.

Referring to fig. 8, a sixth embodiment of the present invention further provides a terminal 80, where the terminal 80 includes:

a second determining module 81, configured to determine, according to PUCCH formats configured by the base station, the number of symbols for DMRS, where each PUCCH format corresponds to the number of symbols for a DMRS, and the PUCCH formats are determined by the base station according to transmission parameters, where the transmission parameters include: and the number range of UCI load carried by the PUCCH, the content type of UCI carried by the PUCCH, the number of symbols of the PUCCH, the state of a frequency hopping switch of the PUCCH, the multiplexing capability of the PUCCH, the moving speed of the terminal and the delay spread of the channel.

The terminal provided by the embodiment of the invention can determine the number of symbols of the DMRS according to the PUCCH format configured by the base station and the corresponding relation between the PUCCH format and the DMRS, thereby determining the pattern of the DMRS, and can transmit PUCCH information according to the pattern of the DMRS, so that the PUCCH meets the requirement of better transmission performance.

Referring to fig. 9, a sixth embodiment of the present invention further provides a base station 90, where the base station 90 includes:

a third determining module 91, configured to determine, according to transmission parameters, PUCCH formats corresponding to the terminal, where each PUCCH format corresponds to a symbol number of a DMRS, and the transmission parameters include: at least one of the UCI load number range carried by the PUCCH, the content type of the UCI carried by the PUCCH, the symbol number of the PUCCH, the state of a frequency hopping switch of the PUCCH, the multiplexing capability of the PUCCH, the moving speed of a terminal and the delay expansion of a channel;

a second sending module 92, configured to configure a corresponding PUCCH format for the terminal.

Through the base station of the embodiment of the invention, the PUCCH format configured to the terminal can be determined according to the transmission parameters, so that the terminal can determine the symbol number of the DMRS according to the corresponding relation between the symbol number of the DMRS and the PUCCH format to determine the pattern of the DMRS, and can transmit PUCCH information according to the pattern of the DMRS, thereby enabling the PUCCH to meet the requirement of better transmission performance.

In some preferred embodiments of the present invention, the third determining module 91 is further configured to determine, according to the transmission parameter, a symbol number of the corresponding DMRS; and determining the PUCCH format corresponding to the terminal according to the number of the symbols of the DMRS.

In some preferred embodiments of the present invention, the third determining module 91 is further configured to determine, according to a transmission parameter at least including a UCI load number range carried by the PUCCH, a symbol number of the DMRS, where the symbol number of the DMRS is inversely related to a value corresponding to the UCI load number range.

In some preferred embodiments of the present invention, the third determining module 91 is further configured to determine the number of symbols of the DMRS to be a first value when the UCI payload number range is a range smaller than or equal to a preset threshold; and when the UCI load number range is greater than the preset threshold value, determining the symbol number of the DMRS as a second numerical value, wherein the second numerical value is smaller than the first numerical value.

In some preferred embodiments of the present invention, the third determining module 91 is further configured to determine, according to a transmission parameter at least including a content type of UCI carried by the PUCCH, a symbol number of the DMRS; determining the number of symbols of the DMRS as a third numerical value when the content type of the UCI comprises a first type content and does not comprise a second type content, wherein the first type content comprises at least one of ACK/NACK, RI and SR; when the content type of the UCI comprises the second type content and does not comprise the first type content, determining the number of symbols of the DMRS as a fourth numerical value, wherein the second type content comprises at least one of CQI and PMI, and the fourth numerical value is smaller than the third numerical value; when the content type of the UCI includes a first type of content and a second type of content, determining the number of symbols of the DMRS to be a third value or a fourth value.

The terminal in the embodiments of the present invention may be a wireless terminal or a wired terminal, and the wireless terminal may be a device providing voice and/or other service data connectivity to a user, a handheld device having a wireless connection function, or other processing devices connected to a wireless modem. A wireless terminal, which may be a mobile terminal such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal, e.g., a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more core networks via a Radio Access Network (RAN), and may exchange language and/or data with the RAN. For example, devices such as Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs) are used. A wireless Terminal may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), and a Terminal (User Device or User Equipment), which are not limited herein.

The Base Station in the embodiment of the present invention may be a Base Transceiver Station (BTS) in Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB, eNodeB) in LTE, a relay Station, an Access point, a Base Station in a future 5G network, and the like, which are not limited herein.

Fig. 10 is a schematic diagram of a hardware structure of a terminal for implementing various embodiments of the present invention, where the terminal 100 includes, but is not limited to: radio frequency unit 101, network module 102, audio output unit 103, input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the mobile terminal architecture illustrated in fig. 10 is not intended to be limiting of mobile terminals, and that a mobile terminal may include more or fewer components than those illustrated, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the mobile terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

The processor 110 is configured to determine a symbol number of the DMRS according to a transmission parameter configured by a base station, where the transmission parameter includes: and the number range of UCI load carried by the PUCCH, the content type of UCI carried by the PUCCH, the number of symbols of the PUCCH, the state of a frequency hopping switch of the PUCCH and the multiplexing capability of the PUCCH. Or, the processor 110 is configured to determine the number of symbols of the DMRSs according to PUCCH formats configured by the base station, where each PUCCH format corresponds to the number of symbols of one DMRS, and the PUCCH formats are determined by the base station according to transmission parameters, where the transmission parameters include: and the number range of UCI load carried by the PUCCH, the content type of UCI carried by the PUCCH, the number of symbols of the PUCCH, the state of a frequency hopping switch of the PUCCH, the multiplexing capability of the PUCCH, the moving speed of the terminal and the delay spread of the channel.

The terminal can determine the number of symbols of the DMRS according to the transmission parameters or PUCCH formats configured by the base station, so as to determine the patterns of the DMRS, and can transmit PUCCH information according to the patterns of the DMRS, so that the PUCCH meets the requirement of better transmission performance.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 101 may be used for receiving and sending signals during a message transmission or call process, and specifically, after receiving downlink data from a base station, the downlink data is processed by the processor 110; in addition, the uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with a network and other devices through a wireless communication system.

The mobile terminal provides wireless broadband internet access to the user through the network module 102, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the network module 102 or stored in the memory 109 into an audio signal and output as sound. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 includes a speaker, a buzzer, a receiver, and the like.

The input unit 104 is used to receive an audio or video signal. The input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, and the Graphics processor 1041 processes image data of a still picture or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the network module 102. The microphone 1042 may receive sound and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode.

The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 1061 and/or a backlight when the mobile terminal 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the posture of the mobile terminal (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), and vibration identification related functions (such as pedometer, tapping); the sensors 105 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.

The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, the user input unit 107 includes a touch panel 1071 and other input devices 1072. Touch panel 1071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 1071 (e.g., operations by a user on or near touch panel 1071 using a finger, stylus, or any suitable object or attachment). The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and receives and executes commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. Specifically, other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

Further, the touch panel 1071 may be overlaid on the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although in fig. 10, the touch panel 1071 and the display panel 1061 are two independent components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, and is not limited herein.

The interface unit 108 is an interface through which an external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and external devices.

The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The mobile terminal 100 may further include a power supply 111 (e.g., a battery) for supplying power to various components, and preferably, the power supply 111 may be logically connected to the processor 110 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system.

In addition, the mobile terminal 100 includes some functional modules that are not shown, and thus, the detailed description thereof is omitted.

In a scheme in which the processor 110 is configured to determine the number of symbols of the DMRS according to the transmission parameters configured by the base station:

preferably, the processor 110 is further configured to determine a symbol number of the DMRS according to a transmission parameter at least including a UCI load number range carried by the PUCCH, wherein the determined symbol number of the DMRS is inversely related to a value corresponding to the UCI load number range.

Preferably, the processor 110 is further configured to determine the number of symbols of the DMRS to be a first value when the UCI payload number range is a range less than or equal to a preset threshold; and when the UCI load number range is greater than the preset threshold value, determining the symbol number of the DMRS as a second numerical value, wherein the second numerical value is smaller than the first numerical value.

Preferably, the processor 110 is further configured to determine a number of symbols of the DMRS according to a transmission parameter at least including a content type of the UCI carried by the PUCCH; determining the number of symbols of the DMRS as a third value when the content type of the UCI comprises a first type content and does not comprise a second type content, wherein the first type content comprises at least one of ACK/NACK, RI and SR, and the second type content comprises at least one of CQI and PMI; when the content type of the UCI comprises the second type content and does not comprise the first type content, determining the number of symbols of the DMRS as a fourth value, wherein the fourth value is smaller than the third value; when the content type of the UCI includes a first type of content and a second type of content, determining the number of symbols of the DMRS to be a third value or a fourth value.

Referring to fig. 11, fig. 11 is a schematic structural diagram of a base station according to a tenth embodiment of the present invention, where the base station 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 base station 1100 further includes: a computer program stored on the memory 1103 and executable on the processor 1101, the computer program, when executed by the processor 1101, implementing the steps of:

configuring transmission parameters to a terminal, wherein the transmission parameters comprise: at least one of the UCI load number range carried by the PUCCH, the content type of the UCI carried by the PUCCH, the symbol number of the PUCCH, the state of a frequency hopping switch of the PUCCH and the multiplexing capability of the PUCCH; or

and configuring a corresponding PUCCH format to the terminal.

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.

In a scheme of determining a PUCCH format corresponding to the terminal according to the transmission parameter and configuring the PUCCH format corresponding to the terminal, the method includes:

optionally, the computer program when executed by the processor 1101 may further implement the steps of: determining the number of symbols of the corresponding DMRS according to the transmission parameters;

Optionally, the computer program when executed by the processor 1101 may further implement the steps of: and determining the symbol number of the DMRS according to the transmission parameters at least comprising the UCI load number range carried by the PUCCH, wherein the symbol number of the DMRS is inversely related to the value corresponding to the UCI load number range.

Optionally, the computer program when executed by the processor 1101 may further implement the steps of: when the UCI load number range is smaller than or equal to a preset threshold value, determining the symbol number of the DMRS as a first numerical value;

and when the UCI load number range is greater than the preset threshold value, determining the symbol number of the DMRS as a second numerical value, wherein the second numerical value is smaller than the first numerical value.

Optionally, the computer program when executed by the processor 1101 may further implement the steps of: determining the number of symbols of the DMRS according to transmission parameters at least comprising the content type of UCI carried by the PUCCH;

The base station of the embodiment of the invention can configure the transmission parameters or PUCCH format for the terminal, so that the terminal can determine the number of symbols of the DMRS, thereby determining the pattern of the DMRS, and can transmit the PUCCH information according to the pattern of the DMRS, so that the PUCCH meets the requirement of better transmission performance. That is, in the embodiment of the present invention, the base station side does not need to determine the number of symbols of the DMRS, but is determined by the terminal side.

The embodiment of the present invention further provides a terminal, which includes a processor, a memory, and a computer program stored on the memory and operable on the processor, and when the computer program is executed by the processor, the steps of the DMRS determination method in any one of the above embodiments are implemented.

The embodiment of the present invention further provides a base station, which includes a processor, a memory, and a computer program stored on the memory and executable on the processor, and when the computer program is executed by the processor, the steps of the DMRS configuration method in any one of the above embodiments are implemented.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the DMRS determination method in any one of the above embodiments are implemented.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the DMRS configuration method in any one of the above embodiments are implemented.

The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

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

determining the number of symbols of the DMRS according to transmission parameters configured by a base station, wherein the transmission parameters comprise: at least one of the uplink control information UCI load number range carried by a physical uplink control channel PUCCH, the content type of UCI carried by the PUCCH, the symbol number of the PUCCH, the state of a frequency hopping switch of the PUCCH and the multiplexing capability of the PUCCH;

the step of determining the number of symbols of the DMRS according to the transmission parameters configured by the base station comprises the following steps:

determining the number of symbols of the DMRS as a third value when the content type of the UCI comprises a first type content and does not comprise a second type content, wherein the first type content comprises at least one of ACK/NACK, RI and SR, and the second type content comprises at least one of CQI and PMI;

when the content type of the UCI comprises the second type content and does not comprise the first type content, determining the number of symbols of the DMRS as a fourth value, wherein the fourth value is smaller than the third value; and

determining the number of symbols of the DMRS as the third value or the fourth value when the content type of the UCI includes a first type content and a second type content.

2. A DMRS determination method is applied to a terminal, and is characterized by comprising the following steps:

determining the number of symbols of DMRS according to PUCCH formats configured by a base station, wherein each PUCCH format corresponds to the number of symbols of one DMRS, the PUCCH formats are determined by the base station according to transmission parameters, and the transmission parameters comprise: at least one of the UCI load number range carried by the PUCCH, the content type of the UCI carried by the PUCCH, the symbol number of the PUCCH, the state of a frequency hopping switch of the PUCCH, the multiplexing capability of the PUCCH, the moving speed of a terminal and the delay expansion of a channel;

the determination of the PUCCH format by the base station according to the transmission parameter specifically includes:

determining the number of symbols of the corresponding DMRS according to the transmission parameters; and

determining a PUCCH format corresponding to the terminal according to the number of symbols of the DMRS;

the step of determining the number of symbols of the corresponding DMRS according to the transmission parameter includes:

when the content type of the UCI comprises the second type content and does not comprise the first type content, determining the number of symbols of the DMRS as a fourth numerical value, wherein the second type content comprises at least one of CQI and PMI, and the fourth numerical value is smaller than the third numerical value; and

3. A DMRS configuration method is applied to a base station, and is characterized by comprising the following steps:

configuring transmission parameters to a terminal, wherein the transmission parameters comprise: at least one of the UCI load number range carried by the PUCCH, the content type of the UCI carried by the PUCCH, the symbol number of the PUCCH, the state of a frequency hopping switch of the PUCCH and the multiplexing capability of the PUCCH;

wherein the number of symbols of the DMRS is determined by the terminal according to the transmission parameter; the terminal determining the number of symbols of the DMRS according to the transmission parameter comprises:

4. A DMRS configuration method is applied to a base station, and is characterized by comprising the following steps:

determining PUCCH formats corresponding to terminals according to transmission parameters, wherein each PUCCH format corresponds to the number of symbols of a DMRS, and the transmission parameters comprise: at least one of the UCI load number range carried by the PUCCH, the content type of the UCI carried by the PUCCH, the symbol number of the PUCCH, the state of a frequency hopping switch of the PUCCH, the multiplexing capability of the PUCCH, the moving speed of a terminal and the delay expansion of a channel; and

configuring a corresponding PUCCH format to the terminal;

the step of determining the PUCCH format corresponding to the terminal according to the transmission parameter includes:

5. A terminal, comprising:

a first determining module, configured to determine, according to a transmission parameter configured by a base station, a symbol number of a DMRS, where the transmission parameter includes: at least one of the UCI load number range carried by the PUCCH, the content type of the UCI carried by the PUCCH, the symbol number of the PUCCH, the state of a frequency hopping switch of the PUCCH and the multiplexing capability of the PUCCH;

the first determining module is further configured to determine, according to a transmission parameter at least including a content type of a UCI carried by a PUCCH, a symbol number of a DMRS; determining the number of symbols of the DMRS as a third value when the content type of the UCI comprises a first type content and does not comprise a second type content, wherein the first type content comprises at least one of ACK/NACK, RI and SR, and the second type content comprises at least one of CQI and PMI; when the content type of the UCI comprises the second type content and does not comprise the first type content, determining the number of symbols of the DMRS as a fourth value, wherein the fourth value is smaller than the third value; determining the number of symbols of the DMRS as the third value or the fourth value when the content type of the UCI includes a first type content and a second type content.

6. A terminal, comprising:

a second determining module, configured to determine, according to PUCCH formats configured by the base station, the number of symbols for DMRSs, where each PUCCH format corresponds to the number of symbols for a DMRS, and the PUCCH formats are determined by the base station according to transmission parameters, where the transmission parameters include: at least one of the UCI load number range carried by the PUCCH, the content type of the UCI carried by the PUCCH, the symbol number of the PUCCH, the state of a frequency hopping switch of the PUCCH, the multiplexing capability of the PUCCH, the moving speed of a terminal and the delay expansion of a channel;

7. A base station, comprising:

a first sending module, configured to configure a transmission parameter to a terminal, where the transmission parameter includes: at least one of the UCI load number range carried by the PUCCH, the content type of the UCI carried by the PUCCH, the symbol number of the PUCCH, the state of a frequency hopping switch of the PUCCH and the multiplexing capability of the PUCCH;

8. A base station, comprising:

a third determining module, configured to determine, according to a transmission parameter, PUCCH formats corresponding to a terminal, where each PUCCH format corresponds to a symbol number of a DMRS, and the transmission parameter includes: at least one of the UCI load number range carried by the PUCCH, the content type of the UCI carried by the PUCCH, the symbol number of the PUCCH, the state of a frequency hopping switch of the PUCCH, the multiplexing capability of the PUCCH, the moving speed of a terminal and the delay expansion of a channel; and

a second sending module, configured to configure a corresponding PUCCH format to the terminal;

the third determining module is further configured to determine, according to the transmission parameter, a symbol number of the corresponding DMRS; determining a PUCCH format corresponding to the terminal according to the number of symbols of the DMRS;

the third determining module is further configured to determine, according to a transmission parameter at least including a content type of the UCI carried by the PUCCH, a symbol number of the DMRS; determining the number of symbols of the DMRS as a third numerical value when the content type of the UCI comprises a first type content and does not comprise a second type content, wherein the first type content comprises at least one of ACK/NACK, RI and SR; when the content type of the UCI comprises the second type content and does not comprise the first type content, determining the number of symbols of the DMRS as a fourth numerical value, wherein the second type content comprises at least one of CQI and PMI, and the fourth numerical value is smaller than the third numerical value; determining the number of symbols of the DMRS as the third value or the fourth value when the content type of the UCI includes a first type content and a second type content.

9. A terminal comprising a processor, a memory, and a computer program stored on the memory and operable on the processor, the computer program, when executed by the processor, implementing the steps of the DMRS determination method of any one of claims 1 to 2.

10. A base station comprising a processor, a memory, and a computer program stored on the memory and operable on the processor, the computer program, when executed by the processor, implementing the steps of the DMRS configuration method of any of claims 3 to 4.

11. A computer-readable storage medium, characterized in that it has stored thereon a computer program which, when being executed by a processor, carries out the steps of the DMRS determination method as defined in any one of claims 1 to 2, or which, when being executed by a processor, carries out the steps of the DMRS configuration method as defined in any one of claims 3 to 4.