CN110855406A

CN110855406A - Phase tracking reference signal PTRS transmission method, network equipment and terminal

Info

Publication number: CN110855406A
Application number: CN201810950471.7A
Authority: CN
Inventors: 李辉; 高秋彬
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-08-20
Filing date: 2018-08-20
Publication date: 2020-02-28
Anticipated expiration: 2038-08-20
Also published as: CN110855406B

Abstract

The invention provides a phase tracking reference signal PTRS transmission method, network equipment and a terminal, wherein the method comprises the following steps: sending a target modulation and coding strategy MCS level of first data to a terminal; and determining an equivalent MCS level corresponding to the target MCS level according to a preset mapping criterion or a preset mapping relation, and sending a phase tracking reference signal PTRS with a target time domain density to the terminal according to the equivalent MCS level, wherein the target time domain density is determined according to the equivalent MCS level. The embodiment of the invention can meet different phase tracking requirements of different services, thereby ensuring the reliability of transmission of the different services.

Description

Phase tracking reference signal PTRS transmission method, network equipment and terminal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a phase tracking reference signal PTRS transmission method, a network device, and a terminal.

Background

In a mobile communication system, such as a 5th Generation (5G) mobile communication system, or referred to as a New Radio (NR) system, the time domain density of a Phase Tracking Reference Signal (PTRS) can be determined by a Modulation and Coding Scheme (MCS) level. The corresponding relationship between the time domain density of the PTRS and the MCS level is shown in table 1:

TABLE 1

MCS level	Time domain density
		I_MCS<ptrs-MCS₁	Absence of PTRS
ptrs-MCS1≤I_MCS<ptrs-MCS2	4
		ptrs-MCS2≤I_MCS<ptrs-MCS3	2
ptrs-MCS3≤I_MCS<ptrs-MCS4	1

Wherein, I_MCSThe parameter PTRS-MCS 1-PTRS-MCS 4 represents the MCS level threshold corresponding to different PTRS time domain densities, and the parameters PTRS-MCS 1-PTRS-MCS 4 can be configured by high-level signaling.

In the NR system, a plurality of services of different scenarios may be supported, such as enhanced mobile Broadband (eMBB) service, high-reliability Ultra-Low latency communication (URLLC) service, and the like, where different services may be dynamically switched. The modulation order, the code rate, and/or the spectral efficiency corresponding to the same MCS level may be different for different services, and if the same MCS level threshold is used for different services, different phase tracking requirements for different services may not be considered.

Disclosure of Invention

The invention provides a phase tracking reference signal PTRS transmission method, network equipment and a terminal, and solves the problem that the prior art cannot give consideration to different phase tracking requirements of different services.

The embodiment of the invention provides a phase tracking reference signal PTRS transmission method, which is applied to network equipment and comprises the following steps:

sending a target modulation and coding strategy MCS level of first data to a terminal;

determining an equivalent MCS level corresponding to the target MCS level according to a preset mapping criterion or a preset mapping relation, wherein the preset mapping criterion or the preset mapping relation is used for indicating a corresponding relation between the MCS level corresponding to the first data and the MCS level corresponding to the second data;

and transmitting a phase tracking reference signal PTRS with a target time domain density to the terminal according to the equivalent MCS level, wherein the target time domain density is determined according to the equivalent MCS level.

An embodiment of the present invention further provides a network device, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein,

the transceiver is configured to: sending a target modulation and coding strategy MCS level of first data to a terminal;

the processor is configured to: determining an equivalent MCS level corresponding to the target MCS level according to a preset mapping criterion or a preset mapping relation, wherein the preset mapping criterion or the preset mapping relation is used for indicating a corresponding relation between the MCS level corresponding to the first data and the MCS level corresponding to the second data;

the transceiver is further configured to: and transmitting a phase tracking reference signal PTRS with a target time domain density to the terminal according to the equivalent MCS level, wherein the target time domain density is determined according to the equivalent MCS level.

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

the first sending module is used for sending the target modulation and coding strategy MCS level of the first data to the terminal;

a first determining module, configured to determine an equivalent MCS level corresponding to a target MCS level according to a preset mapping criterion or a preset mapping relationship, where the preset mapping criterion or the preset mapping relationship is used to indicate a correspondence between the MCS level corresponding to the first data and the MCS level corresponding to the second data;

and the second sending module is used for sending the phase tracking reference signal PTRS with the target time domain density to the terminal according to the equivalent MCS level, wherein the target time domain density is determined according to the equivalent MCS level.

Embodiments of the present invention also provide a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the above-described phase tracking reference signal PTRS transmission method.

The embodiment of the invention also provides a phase tracking reference signal PTRS transmission method, which is applied to a terminal and comprises the following steps:

receiving a target Modulation and Coding Strategy (MCS) level of first data;

and receiving the phase tracking reference signal PTRS according to the equivalent MCS level and the target time domain density, wherein the target time domain density is determined according to the equivalent MCS level.

An embodiment of the present invention further provides a terminal, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein,

the transceiver is configured to: receiving a target Modulation and Coding Strategy (MCS) level of first data;

the transceiver is configured to: and receiving the phase tracking reference signal PTRS according to the equivalent MCS level and the target time domain density, wherein the target time domain density is determined according to the equivalent MCS level.

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

a first receiving module, configured to receive a target modulation and coding strategy MCS level of first data;

a second determining module, configured to determine an equivalent MCS level corresponding to the target MCS level according to a preset mapping criterion or a preset mapping relationship, where the preset mapping criterion or the preset mapping relationship is used to indicate a correspondence between the MCS level corresponding to the first data and the MCS level corresponding to the second data;

and the second receiving module is used for receiving the phase tracking reference signal PTRS according to the equivalent MCS level and the target time domain density, wherein the target time domain density is determined according to the equivalent MCS level.

An embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, which is characterized in that the computer program, when being executed by a processor, implements the steps of the above-mentioned phase tracking reference signal PTRS transmission method.

The technical scheme of the invention has the beneficial effects that: different phase tracking requirements of different services can be met, and therefore reliability of transmission of different services is guaranteed.

Drawings

Fig. 1 is a flowchart illustrating a PTRS transmission method of a network device according to an embodiment of the present invention;

FIG. 2 is a block diagram of a network device according to an embodiment of the present invention;

FIG. 3 shows a block diagram of a network device of an embodiment of the invention;

fig. 4 is a flowchart illustrating a PTRS transmission method of a terminal according to an embodiment of the present invention;

fig. 5 is a schematic block diagram of a terminal according to an embodiment of the present invention;

fig. 6 shows a block diagram of a terminal according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help the full understanding of the embodiments of the present invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

In addition, the terms "system" and "network" are often used interchangeably herein.

In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.

In the embodiment of the present invention, the access network may be an access network including a Macro Base Station (Macro Base Station), a micro Base Station (Pico Base Station), a Node B (3G mobile Station), an enhanced Base Station (eNB), a Home enhanced Base Station (Femto eNB or Home eNode B or Home eNB or HeNB), a relay Station, an access point, an RRU (Remote Radio unit), an RRH (Remote Radio Head), and the like. The user terminal may be a mobile phone (or handset), or other device capable of sending or receiving wireless signals, including user Equipment, a Personal Digital Assistant (PDA), a wireless modem, a wireless communicator, a handheld device, a laptop computer, a cordless phone, a Wireless Local Loop (WLL) station, a CPE (Customer Premise Equipment) or a mobile smart hotspot capable of converting mobile signals into WiFi signals, a smart appliance, or other devices capable of autonomously communicating with a mobile communication network without human operation, and so on.

Specifically, the embodiment of the present invention provides a method for transmitting a phase tracking reference signal PTRS, so as to meet different phase tracking requirements of different services.

First embodiment

As shown in fig. 1, an embodiment of the present invention provides a method for transmitting a phase tracking reference signal PTRS, which specifically includes the following steps:

step 11: and sending the target modulation and coding strategy MCS level of the first data to the terminal.

The first data may refer to transmission data of a first service, the first service may include, but is not limited to, a 5G or 4G service, and taking 5G as an example, the first service may be one of an eMBB service and a URLLC service. The first data may also refer to one of data transmission when the highest MCS index table supporting 256-order QAM modulation and data transmission when the highest MCS index table supporting 64-order QAM modulation is used in the eMBB service.

Step 12: and determining the equivalent MCS level corresponding to the target MCS level according to a preset mapping criterion or a preset mapping relation.

The preset mapping criterion or the preset mapping relation is used for indicating the corresponding relation between the MCS level corresponding to the first data and the MCS level corresponding to the second data. The second data may refer to transmission data of a second service, which is different from the first service, and uses an MCS index table different from the first service. The second service may also be a 5G or 4G service, and taking 5G as an example, the first service may be one of an eMBB service and a URLLC service, and the second service may be the other of the eMBB service and the URLLC service. The second data may also refer to data transmission using a different MCS index table than the first data. For example, in the eMBB service, the first data may be one of data transmission when using an MCS index table that supports 256-order QAM modulation at the highest level and data transmission when using an MCS index table that supports 64-order QAM modulation at the highest level. The second data may be the other of data transmission when using the MCS index table highest supporting 256-order QAM modulation and data transmission when using the MCS index table highest supporting 64-order QAM modulation.

Step 13: and transmitting a phase tracking reference signal PTRS with target time domain density to the terminal according to the equivalent MCS level.

Wherein the target time domain density is determined according to the equivalent MCS level. Specifically, the time domain density of the PTRS is determined according to the MCS level corresponding to the second data, that is, the system predefines a mapping relationship between the MCS level and the time domain density of the PTRS, where the MCS level in the mapping relationship is based on the second data, and if the network device sends the PTRS for the first data, the target MCS level of the first data needs to be converted into an equivalent MCS level based on the second data, and then the time domain density of the PTRS is determined according to the equivalent MCS level, and the PTRS is sent according to the time domain density. Thus, since the target time domain density of the PTRS corresponding to the first data is: the MCS level of the first data is equivalent to the MCS level corresponding to the second data and then determined, the corresponding relation between the MCS level and the time domain density of the PTRS is predefined, the MCS levels of other types of services are equivalent to the MCS levels in the corresponding relation, the phase tracking requirements of different services can be considered, and extra signaling overhead can not be increased.

In the embodiment of the present invention, the Target MCS level of the first data is determined according to a first index table, where the first index table is used to indicate a corresponding relationship between the MCS level of the first data and a Target parameter, where the Target parameter includes at least one of a Modulation Order (Modulation Order), a code Rate (Target code Rate), and a spectral efficiency (spectral efficiency). Wherein the first data may be transmission data of an eMBB service, and the first index table indicating a correspondence between MCS levels of the first data and target parameters is shown in table 2 below:

TABLE 2

Wherein the first data may be transmission data of URLLC service, and the first index table indicating the corresponding relationship between the MCS level of the first data and the target parameter is shown in table 3 below:

TABLE 3

It should be noted that the service type of the first data is not limited to the eMBB service and the URLLC service, and the first index table of the first data is not limited to the table 2 and the table 3.

Similarly, the MCS of the second data is determined according to a second index table, and when the first data is one of the eMBB service and the URLLC service, the second data may be the other one of the eMBB service and the URLLC service, and the index table thereof can be referred to in tables 2 and 3 above.

Wherein, step 12 can be implemented by referring to, but not limited to, the following ways:

in the first mode, the step 12 of determining the equivalent MCS level corresponding to the target MCS level according to the preset mapping criterion includes: and according to a preset mapping criterion, determining an MCS level corresponding to a parameter which is closest to a first target parameter value of the target MCS level in a second index table as an equivalent MCS level of the target MCS level, wherein the first target parameter is one of the target parameters, and the second index table is used for indicating a corresponding relation between the MCS level of the second data and the target parameter, wherein the target parameter comprises at least one of a modulation order, a code rate and spectral efficiency.

The system predefines a preset mapping criterion of the equivalent MCS, taking spectral efficiency as an example, the preset mapping criterion of an MCS may adopt a spectral efficiency closest criterion, that is, the target MCS level of the first data corresponds to the closest spectral efficiency to the equivalent MCS level. Suppose that the first data is transmission data of URLLC service, and the target MCS level is I_MCS21 as in table 3_MCSWhen the spectral efficiency is 2.5664, the equivalent MCS level of the first data needs to look up the MCS level closest to the spectral efficiency (2.5664) in table 2, and I is closest to the spectral efficiency (2.5664) in table 2_MCS16 corresponds to a spectral efficiency 2.5703. The target MCS level 21 of the first data corresponds to an equivalent MCS level of 16.

In the second mode, the step 12 of determining the equivalent MCS level corresponding to the target MCS level according to the preset mapping criterion includes: and according to a preset mapping criterion, determining the MCS level corresponding to the parameter which has the same value as the first target parameter of the target MCS level and the closest value, the maximum value or the minimum value of the second target parameter in the second index table as the equivalent MCS level of the target MCS level, wherein the second target parameter is different from the first target parameter.

Taking the modulation order and the spectral efficiency as an example, the preset mapping criterion of an MCS may adopt a spectral efficiency closest criterion under the condition of the same modulation order. Suppose that the first data is transmission data of URLLC service, and the target MCS level is I_MCS3 as in table 3_MCSModulation order Q of 3_m2 and the spectral efficiency is 0.1250, then the equivalent MCS level of the first data needs to look up the MCS level closest to this spectral efficiency (0.1250) at the modulation order of 2 in table 2, and the modulation order Qm is 2 and closest to this spectral efficiency (0.1250) is I in table 2_MCSSpectral efficiency 0.2344 for 0, then of the first dataThe equivalent MCS level corresponding to the target MCS level 3 is 0.

Alternatively, taking the modulation order combined with the maximum spectral efficiency as an example, the preset mapping criterion of an MCS may adopt the minimum spectral efficiency criterion under the condition of the same modulation order. Suppose that the first data is transmission data of URLLC service, and the target MCS level is I_MCS18 as in table 3_MCSModulation order Q when equal to 18_mIf the modulation order is 4, the MCS level of the first data is equivalent to the MCS level of the second data, the MCS level having the lowest spectral efficiency is found in table 2, and the modulation order Q is found in table 2_mAt the lowest spectral efficiency, is I ═ 4_MCSThe target MCS level 18 of the first data corresponds to an equivalent MCS level of 10, which corresponds to a spectral efficiency 1.3281 of 10.

In the third mode, the step of determining the equivalent MCS level corresponding to the target MCS level according to the preset mapping relationship in step 12 includes: and determining the MCS level in the second index table corresponding to the target MCS level as the equivalent MCS level according to the preset mapping relation.

The preset mapping relationship is a corresponding relationship between the MCS level in the first index table and the MCS level in the second index table. Assume that MCS level 21 of URLLC traffic corresponds to MCS level 16 of eMBB traffic and MCS level 3 of URLLC traffic corresponds to MCS level 0 of URLLC traffic. If the first data is the transmission data of URLLC service, the target MCS level is I_MCSThen the equivalent MCS level for the first data is 16. If the first data is the transmission data of URLLC service, the target MCS level is I_MCSThen the equivalent MCS level of the first data is 0.

Step 13 specifically includes: and sending the PTRS with the target time domain density to the terminal according to the relation between the equivalent MCS level and the MCS level threshold. Specifically, as shown in table 1, the time domain density of PTRS may be determined according to the size relationship between the MCS level and the MCS level threshold.

The PTRS transmission method further comprises the following steps: the network equipment configures a group of MCS level thresholds for the terminal, and the MCS level thresholds are used for determining the time domain density of the PTRS. As shown in Table 1, in I_MCS<ptrs-MCS₁When PTRS does not exist, PTRS-MCS1 is less than or equal toI_MCS<When PTRS-MCS2 is adopted, the time domain density of PTRS is 4, and I is not less than PTRS-MCS2_MCS<When PTRS-MCS3 is adopted, the time domain density of PTRS is 2, and I is not less than PTRS-MCS3_MCS<The time domain density of PTRS is 1 when PTRS-MCS 4. Wherein, I_MCSAnd the values of the PTRS-MCS 1-PTRS-MCS 4 represent MCS level thresholds corresponding to different PTRS time domain densities, the value range is 0-29, and the parameters PTRS-MCS 1-PTRS-MCS 4 can be configured by high-level signaling.

Wherein, the MCS level threshold in the embodiment of the present invention is determined according to the second index table used by the second data.

That is to say, in the embodiment of the present invention, the network device configures a set of MCS level threshold parameters for PTRS time domain density indication, where the MCS level threshold parameters are determined according to the second index table. The second index table may be an MCS index table used by the eMBB service or an MCS index table used by the URLLC service. For example, the base station side configures a group of MCS level threshold parameters PTRS-MCS 1-PTRS-MCS 4 for PTRS time domain density indication, and the MCS level threshold parameters are determined according to the second index table. Assume that the second index table is table 2, which is an MCS index table used by the eMBB service. If ptrs-MCS 1-3, ptrs-MCS 2-10, ptrs-MCS 3-17 and ptrs-MCS 4-29 are determined, the values can be determined by the terminal and fed back to the base station.

When the network device transmits the first data and uses the first index table, the network device determines an MCS level (or called MCS index) I of the first data based on the first index table_{MCS_1}(target MCS level) and indicated to the terminal. Assuming that the base station transmits URLLC traffic and uses table 3, the first index table is table 3. The base station determines the MCS index I of the first data based on Table 3_{MCS_1}21 and indicated to the terminal. The determination of this target MCS level may be determined by the base station from CSI feedback of the terminal.

The network equipment determines I based on the preset mapping rule of the equivalent MCS predefined by the system_{MCS_1}The equivalent MCS in the second index table is index I_{MCS_2}(the equivalent MCS level of the target MCS level). The preset mapping rule predefined by the system is assumed to be the closest standard of adopting spectral efficiencyThen the base station determines I_{MCS_1}21 equivalent MCS level I in the second index table_{MCS_2}＝16。

The network equipment determines the equivalent MCS level I according to the determined_{MCS_2}And an MCS level threshold, determining the time domain density of the PTRS, and further carrying out PTRS transmission. The base station determines the equivalent MCS level I_{MCS_2}And determining the time domain density of the PTRS to be 2 according to the time domain density table (table 1) and the MCS level threshold, and further carrying out PTRS transmission.

In the PTRS transmission method of the embodiment of the invention, the network equipment can meet the phase tracking requirements of different services, thereby ensuring the reliability of transmission of the different services.

Second embodiment

The first embodiment is described above with respect to a method for transmitting a phase tracking reference signal PTRS according to the present invention, and the following embodiment will further describe a network device corresponding to the method with reference to the accompanying drawings.

Specifically, as shown in fig. 2, the network device 200 according to the embodiment of the present invention includes:

a first sending module 210, configured to send a target modulation and coding strategy MCS level of first data to a terminal;

a first determining module 220, configured to determine an equivalent MCS level corresponding to a target MCS level according to a preset mapping criterion or a preset mapping relationship, where the preset mapping criterion or the preset mapping relationship is used to indicate a correspondence between the MCS level corresponding to the first data and the MCS level corresponding to the second data;

a second sending module 230, configured to send the phase tracking reference signal PTRS with a target time domain density to the terminal according to the equivalent MCS level, where the target time domain density is determined according to the equivalent MCS level.

Wherein the target MCS level is determined according to the first index table; the first index table is used for indicating a corresponding relation between the MCS level of the first data and a target parameter, wherein the target parameter comprises at least one of a modulation order, a code rate and a spectral efficiency.

Wherein the first determining module 220 comprises:

the first determining submodule is used for determining the MCS level corresponding to the parameter which is closest to the first target parameter value of the target MCS level in the second index table as the equivalent MCS level of the target MCS level according to the preset mapping criterion;

alternatively, the first and second electrodes may be,

the second determining submodule is used for determining the MCS levels corresponding to the parameters which have the same value as the first target parameter of the target MCS level and the closest value, the maximum value or the minimum value of the second target parameter in the second index table as the equivalent MCS level of the target MCS level according to the preset mapping criterion;

the second index table is used for indicating a corresponding relation between the MCS level of the second data and a target parameter, the target parameter includes at least one of a modulation order, a code rate and a spectral efficiency, the first target parameter is one of the target parameters, and the second target parameter is different from the first target parameter.

Wherein the first determining module 220 comprises:

the third determining submodule is used for determining the MCS level in the second index table corresponding to the target MCS level as the equivalent MCS level according to the preset mapping relation;

wherein the second index table is used for indicating the corresponding relation between the MCS level of the second data and the target parameter.

The second sending module 230 includes:

and the first sending submodule is used for sending the PTRS with the target time domain density to the terminal according to the relation between the equivalent MCS level and the MCS level threshold.

Wherein, the network device 200 further includes:

and the configuration module is used for configuring a group of MCS level thresholds for the terminal, and the MCS level thresholds are used for determining the time domain density of the PTRS.

Wherein the MCS level threshold is determined according to a second index table used by the second data.

The embodiment of the network equipment of the invention is corresponding to the embodiment of the method, all the implementation means in the embodiment of the method are suitable for the embodiment of the network equipment, and the same technical effect can be achieved. The network equipment can meet the phase tracking requirements of different services, thereby ensuring the reliability of transmission of the different services.

Third embodiment

In order to better achieve the above object, as shown in fig. 3, a fourth embodiment of the present invention further provides a network device, including: a processor 300; a memory 320 connected to the processor 300 through a bus interface, and a transceiver 310 connected to the processor 300 through a bus interface; the memory 320 is used for storing programs and data used by the processor in performing operations; transmitting data information or pilot frequency through the transceiver 310, and receiving an uplink control channel through the transceiver 310; when the processor 300 calls and executes the programs and data stored in the memory 320, the following functions are implemented: the processor 300 is adapted to read programs in the memory 320 and the transceiver 310 is adapted to receive and transmit data under the control of the processor 300.

Specifically, the transceiver 310 is configured to: sending a target modulation and coding strategy MCS level of first data to a terminal;

the processor 300 is configured to: determining an equivalent MCS level corresponding to the target MCS level according to a preset mapping criterion or a preset mapping relation, wherein the preset mapping criterion or the preset mapping relation is used for indicating a corresponding relation between the MCS level corresponding to the first data and the MCS level corresponding to the second data;

the transceiver 310 is also for: and transmitting a phase tracking reference signal PTRS with a target time domain density to the terminal according to the equivalent MCS level, wherein the target time domain density is determined according to the equivalent MCS level.

Wherein the processor 300 is configured to:

determining the MCS level corresponding to the parameter closest to the first target parameter value of the target MCS level in the second index table as the equivalent MCS level of the target MCS level according to a preset mapping criterion;

alternatively, the first and second electrodes may be,

determining the MCS level corresponding to the parameter which has the same value as the first target parameter of the target MCS level and the closest, maximum or minimum value of the second target parameter in the second index table as the equivalent MCS level of the target MCS level;

Wherein, the processor 300 is further configured to:

determining the MCS level in the second index table corresponding to the target MCS level as an equivalent MCS level according to a preset mapping relation;

Wherein the transceiver 310 is further configured to: and sending the PTRS with the target time domain density to the terminal according to the relation between the equivalent MCS level and the MCS level threshold.

Wherein the transceiver 310 is further configured to: and configuring a group of MCS level thresholds for the terminal, wherein the MCS level thresholds are used for determining the time domain density of the PTRS.

Where in fig. 3, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 300 and memory represented by memory 320. 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 310 may be a number of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. The processor 300 is responsible for managing the bus architecture and general processing, and the memory 320 may store data used by the processor 300 in performing operations.

Those skilled in the art will appreciate that all or part of the steps for implementing the above embodiments may be performed by hardware, or may be instructed to be performed by associated hardware by a computer program that includes instructions for performing some or all of the steps of the above methods; and the computer program may be stored in a readable storage medium, which may be any form of storage medium.

The phase tracking reference signal PTRS transmission method according to the embodiment of the present invention is introduced from the network device side, and the phase tracking reference signal PTRS transmission method at the terminal side will be further described with reference to the drawings.

Fourth embodiment

As shown in fig. 4, an embodiment of the present invention provides a phase tracking reference signal PTRS transmission method, applied to a terminal side, including the following steps:

step 41: a target modulation and coding strategy, MCS, level for the first data is received.

The first data may refer to transmission data of a first service, and the first service may include, but is not limited to, one of eMBB service and URLLC service. The first data may also refer to one of data transmission when the highest MCS index table supporting 256-order QAM modulation and data transmission when the highest MCS index table supporting 64-order QAM modulation is used in the eMBB service.

Step 42: and determining the equivalent MCS level corresponding to the target MCS level according to a preset mapping criterion or a preset mapping relation.

The preset mapping criterion or the preset mapping relation is used for indicating the corresponding relation between the MCS level corresponding to the first data and the MCS level corresponding to the second data. The second data refers to transmission data of a second service, which is different from the first service, and uses an MCS index table different from the first service. The first service may be one of an eMBB service and a URLLC service, and the second service may be the other of the eMBB service and the URLLC service. The second data may also refer to data transmission using a different MCS index table than the first data. For example, in the eMBB service, the first data may be one of data transmission when using an MCS index table that supports 256-order QAM modulation at the highest level and data transmission when using an MCS index table that supports 64-order QAM modulation at the highest level. The second data may be the other of data transmission when using the MCS index table highest supporting 256-order QAM modulation and data transmission when using the MCS index table highest supporting 64-order QAM modulation.

Step 43: and receiving the phase tracking reference signal PTRS according to the target time domain density according to the equivalent MCS level.

Wherein, step 42 can be implemented by referring to, but not limited to, the following ways: the step 42 of determining the equivalent MCS level corresponding to the target MCS level according to the preset mapping criteria includes: determining an MCS level corresponding to a parameter which is closest to a first target parameter value of the target MCS level in the second index table as an equivalent MCS level of the target MCS level according to a preset mapping criterion, wherein the first target parameter is one of the target parameters; the first embodiment is applicable to the second embodiment, and therefore, the implementation of the first embodiment is not described herein again. Wherein the second index table is used for indicating a corresponding relation between the MCS level of the second data and a target parameter, wherein the target parameter comprises at least one of a modulation order, a code rate and a spectral efficiency.

Or, the step 42 of determining the equivalent MCS level corresponding to the target MCS level according to the preset mapping criterion includes: determining the MCS levels corresponding to the parameters with the same value as the first target parameter of the target MCS level and the closest, maximum or minimum value of the second target parameter in the second index table as the equivalent MCS level of the target MCS level according to a preset mapping criterion, wherein the second target parameter is different from the first target parameter; the second embodiment is applicable to the first embodiment, and therefore, the implementation of the second embodiment is not described herein again.

Further, the step 42 of determining the equivalent MCS level corresponding to the target MCS level according to the preset mapping relationship includes: and determining the MCS level in the second index table corresponding to the target MCS level as the equivalent MCS level according to the preset mapping relation. The method corresponds to the third method in the first embodiment, and the implementation methods of the third method are all applicable to this embodiment, and therefore are not described herein again.

Step 43 comprises: and receiving the PTRS according to the target time domain density according to the relation between the equivalent MCS level and the MCS level threshold. Specifically, as shown in table 1, the time domain density of PTRS may be determined according to the size relationship between the MCS level and the MCS level threshold.

Wherein, the PTRS transmission method further comprises: a set of MCS level thresholds is received, the MCS level thresholds being used to determine a time domain density of the PTRS. As shown in Table 1, in I_MCS<ptrs-MCS₁When PTRS does not exist, PTRS-MCS1 is less than or equal to I_MCS<When PTRS-MCS2 is adopted, the time domain density of PTRS is 4, and I is not less than PTRS-MCS2_MCS<When PTRS-MCS3 is adopted, the time domain density of PTRS is 2, and I is not less than PTRS-MCS3_MCS<The time domain density of PTRS is 1 when PTRS-MCS 4. It is composed ofIn (I)_MCSAnd the values of the PTRS-MCS 1-PTRS-MCS 4 represent MCS level thresholds corresponding to different PTRS time domain densities, the value range is 0-29, and the parameters PTRS-MCS 1-PTRS-MCS 4 can be configured by high-level signaling.

That is to say, in the embodiment of the present invention, the terminal receives the MCS level I of the first data indicated by the network device_{MCS_1}(target MCS level). For example, the terminal receives the MCS index I of the first data indicated by the base station_{MCS_1}＝21。

The terminal is based on the preset mapping criterion of the equivalent MCS predefined by the system, I_{MCS_1}The equivalent MCS in the second index table is index I_{MCS_2}(the equivalent MCS level of the target MCS level). Assuming that the preset mapping criterion predefined by the system is the closest criterion of adopting the spectral efficiency, the terminal determines I_{MCS_1}21 equivalent MCS level I in the second index table_{MCS_2}＝16。

The terminal indexes I according to the determined equivalent MCS_{MCS_2}And an MCS level threshold, determining the time domain density of the PTRS, and further receiving the PTRS. The terminal determines the equivalent MCS level I_{MCS_2}And determining the time domain density of the PTRS to be 2 according to the time domain density table (table 1) and the MCS level threshold, and further carrying out PTRS transmission.

In the PTRS transmission method of the embodiment of the invention, the terminal can determine the time domain density of PTRS under different services, and then the PIRS is received according to the determined time domain density, so that the reliability of transmission of different services can be ensured.

The above embodiments are respectively described with respect to the method for transmitting the phase tracking reference signal PTRS of the present invention, and the following embodiments will further describe the corresponding terminals with reference to the drawings.

Fifth embodiment

As shown in fig. 5, the terminal according to the embodiment of the present invention includes the following functional modules:

a first receiving module 510, configured to receive a target modulation and coding strategy MCS level of first data;

a second determining module 520, configured to determine an equivalent MCS level corresponding to the target MCS level according to a preset mapping criterion or a preset mapping relationship, where the preset mapping criterion or the preset mapping relationship is used to indicate a correspondence between the MCS level corresponding to the first data and the MCS level corresponding to the second data;

a second receiving module 530, configured to receive the phase tracking reference signal PTRS according to the equivalent MCS level and according to a target time domain density, where the target time domain density is determined according to the equivalent MCS level.

Wherein the second determining module 520 includes:

the fourth determining submodule is used for determining the MCS level corresponding to the parameter which is closest to the first target parameter value of the target MCS level in the second index table as the equivalent MCS level of the target MCS level according to the preset mapping criterion;

alternatively, the first and second electrodes may be,

the fifth determining submodule determines the MCS level corresponding to the parameter which has the same value as the first target parameter of the target MCS level and the second target parameter which has the closest value, the maximum value or the minimum value in the second index table as the equivalent MCS level of the target MCS level;

Wherein the second determining module 520 further comprises,

a sixth determining submodule, configured to determine, according to a preset mapping relationship, an MCS level in a second index table corresponding to the target MCS level as an equivalent MCS level;

Wherein the second receiving module 530 comprises:

and the first receiving submodule is used for receiving the PTRS according to the target time domain density and the relation between the equivalent MCS level and the MCS level threshold.

Wherein, the terminal still includes:

and a third receiving module, configured to receive a set of MCS level thresholds, where the MCS level thresholds are used to determine a time domain density of the PTRS.

The terminal embodiment of the invention is corresponding to the embodiment of the method, all implementation means in the method embodiment are applicable to the embodiment of the terminal, and the same technical effect can be achieved. The terminal can determine the time domain density of PTRS under different services, and then receives PIRS according to the determined time domain density, so that the reliability of transmission of different services can be ensured.

Sixth embodiment

As shown in fig. 6, the present embodiment provides a terminal, including:

a processor 61; and a memory 63 connected to the processor 61 through a bus interface 62, wherein the memory 63 is used for storing programs and data used by the processor 61 in executing operations, and when the processor 61 calls and executes the programs and data stored in the memory 63, the following processes are performed.

The transceiver 64 is connected to the bus interface 62, and is used for receiving and transmitting data under the control of the processor 61, specifically:

the transceiver 64 is for: receiving a target Modulation and Coding Strategy (MCS) level of first data;

the processor 61 is configured to: determining an equivalent MCS level corresponding to the target MCS level according to a preset mapping criterion or a preset mapping relation, wherein the preset mapping criterion or the preset mapping relation is used for indicating a corresponding relation between the MCS level corresponding to the first data and the MCS level corresponding to the second data;

the transceiver 64 is for: and receiving the phase tracking reference signal PTRS according to the equivalent MCS level and the target time domain density, wherein the target time domain density is determined according to the equivalent MCS level.

Wherein the processor 61 is configured to:

alternatively, the first and second electrodes may be,

Wherein the processor 61 is further configured to:

Wherein the transceiver 64 is further configured to: and receiving the PTRS according to the target time domain density according to the relation between the equivalent MCS level and the MCS level threshold.

Wherein the transceiver 64 is further configured to: a set of MCS level thresholds is received, the MCS level thresholds being used to determine a time domain density of the PTRS.

It should be noted that in fig. 6, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 61 and various circuits of memory represented by memory 63 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 64 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. For different terminals, the user interface 65 may also be an interface capable of interfacing with a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc. The processor 61 is responsible for managing the bus architecture and general processing, and the memory 63 may store data used by the processor 61 in performing operations.

Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.

Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a general purpose device as is well known. The object of the invention is thus also achieved solely by providing a program product comprising program code for implementing the method or the apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A phase tracking reference signal PTRS transmission method is applied to network equipment and is characterized by comprising the following steps:

and transmitting a Phase Tracking Reference Signal (PTRS) with a target time domain density to the terminal according to the equivalent MCS level, wherein the target time domain density is determined according to the equivalent MCS level.

2. The Phase Tracking Reference Signal (PTRS) transmission method according to claim 1, wherein the target MCS level is determined according to a first index table; wherein the first index table is used for indicating a corresponding relation between the MCS level of the first data and a target parameter, and the target parameter comprises at least one of a modulation order, a code rate and a spectral efficiency.

3. The method for PTRS transmission of phase tracking reference signal according to claim 1 or 2, wherein in the step of determining the equivalent MCS level corresponding to the target MCS level according to a preset mapping criterion or a preset mapping relationship,

determining an equivalent MCS level corresponding to the target MCS level according to a preset mapping criterion, wherein the step comprises the following steps:

determining the MCS level corresponding to the parameter closest to the first target parameter value of the target MCS level in the second index table as the equivalent MCS level of the target MCS level according to the preset mapping criterion;

alternatively, the first and second electrodes may be,

determining the MCS level corresponding to the parameter which has the same value as the first target parameter of the target MCS level and the closest, maximum or minimum value of the second target parameter in the second index table as the equivalent MCS level of the target MCS level according to the preset mapping criterion;

wherein the second index table is configured to indicate a corresponding relationship between an MCS level of the second data and a target parameter, the target parameter includes at least one of a modulation order, a code rate, and a spectral efficiency, the first target parameter is one of the target parameters, and the second target parameter is different from the first target parameter.

4. The method for PTRS transmission of phase tracking reference signal according to claim 1 or 2, wherein in the step of determining the equivalent MCS level corresponding to the target MCS level according to a preset mapping criterion or a preset mapping relationship,

determining an equivalent MCS level corresponding to the target MCS level according to a preset mapping relationship, wherein the step comprises the following steps:

determining the MCS level in the second index table corresponding to the target MCS level as the equivalent MCS level according to the preset mapping relation;

wherein the second index table is used for indicating a corresponding relation between the MCS level of the second data and a target parameter.

5. The method of claim 1, wherein the step of transmitting a Phase Tracking Reference Signal (PTRS) with a target time domain density to the terminal according to the equivalent MCS level comprises:

and sending the PTRS with the target time domain density to the terminal according to the relation between the equivalent MCS level and the MCS level threshold.

6. The method for phase tracking reference signal, PTRS, transmission according to claim 5, further comprising:

and configuring a group of MCS level thresholds for the terminal, wherein the MCS level thresholds are used for determining the time domain density of the PTRS.

7. The method of phase tracking reference signal, PTRS, transmission according to claim 5, wherein the MCS level threshold is determined according to a second index table used by the second data.

8. A network device, comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein,

the transceiver is further configured to: and transmitting a Phase Tracking Reference Signal (PTRS) with a target time domain density to the terminal according to the equivalent MCS level, wherein the target time domain density is determined according to the equivalent MCS level.

9. The network device of claim 8, wherein the target MCS level is determined from a first index table; wherein the first index table is used for indicating a corresponding relation between the MCS level of the first data and a target parameter, and the target parameter comprises at least one of a modulation order, a code rate and a spectral efficiency.

10. The network device of claim 8 or 9, wherein the processor is configured to:

alternatively, the first and second electrodes may be,

11. The network device of claim 8 or 9, wherein the processor is configured to:

12. The network device of claim 8, wherein the transceiver is further configured to: and sending the PTRS with the target time domain density to the terminal according to the relation between the equivalent MCS level and the MCS level threshold.

13. The network device of claim 12, wherein the transceiver is further configured to: and configuring a group of MCS level thresholds for the terminal, wherein the MCS level thresholds are used for determining the time domain density of the PTRS.

14. The network device of claim 12, wherein the MCS level threshold is determined based on a second index table used by the second data.

15. A network device, comprising:

a first determining module, configured to determine an equivalent MCS level corresponding to the target MCS level according to a preset mapping criterion or a preset mapping relationship, where the preset mapping criterion or the preset mapping relationship is used to indicate a correspondence between the MCS level corresponding to the first data and the MCS level corresponding to the second data;

a second sending module, configured to send a phase tracking reference signal PTRS with a target time domain density to the terminal according to the equivalent MCS level, where the target time domain density is determined according to the equivalent MCS level.

16. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the phase tracking reference signal, PTRS, transmission method according to any one of claims 1 to 7.

17. A phase tracking reference signal PTRS transmission method is applied to a terminal, and is characterized by comprising the following steps:

receiving a target Modulation and Coding Strategy (MCS) level of first data;

and receiving a phase tracking reference signal PTRS according to the equivalent MCS level and a target time domain density, wherein the target time domain density is determined according to the equivalent MCS level.

18. The method for PTRS transmission of phase tracking reference signal according to claim 17, wherein in the step of determining the equivalent MCS level corresponding to the target MCS level according to a preset mapping criterion or a preset mapping relationship,

alternatively, the first and second electrodes may be,

19. The method for PTRS transmission of phase tracking reference signal according to claim 17, wherein in the step of determining the equivalent MCS level corresponding to the target MCS level according to a preset mapping criterion or a preset mapping relationship,

20. The method of claim 17, wherein the step of receiving a Phase Tracking Reference Signal (PTRS) at a target time domain density based on the equivalent MCS level comprises:

and receiving the PTRS according to the target time domain density according to the relation between the equivalent MCS level and the MCS level threshold.

21. The method for phase tracking reference signal, PTRS, transmission according to claim 20, further comprising:

receiving a set of the MCS level thresholds, the MCS level thresholds being used to determine a time domain density of the PTRS.

22. The phase tracking reference signal, PTRS, transmission method of claim 20 wherein the MCS level threshold is determined from a second index table used by the second data.

23. A terminal, comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein,

the transceiver is configured to: and receiving a phase tracking reference signal PTRS according to the equivalent MCS level and a target time domain density, wherein the target time domain density is determined according to the equivalent MCS level.

24. The terminal of claim 23, wherein the processor is configured to:

alternatively, the first and second electrodes may be,

25. The terminal of claim 23, wherein the processor is configured to:

26. The terminal of claim 23, wherein the transceiver is further configured to: and receiving the PTRS according to the target time domain density according to the relation between the equivalent MCS level and the MCS level threshold.

27. The terminal of claim 26, wherein the transceiver is further configured to: receiving a set of the MCS level thresholds, the MCS level thresholds being used to determine a time domain density of the PTRS.

28. The terminal of claim 26, wherein the MCS level threshold is determined based on a second index table used for the second data.

29. A terminal, comprising:

a second determining module, configured to determine an equivalent MCS level corresponding to the target MCS level according to a preset mapping criterion or a preset mapping relationship, where the preset mapping criterion or the preset mapping relationship is used to indicate a correspondence between an MCS level corresponding to the first data and an MCS level corresponding to the second data;

and a second receiving module, configured to receive a phase tracking reference signal PTRS according to the equivalent MCS level and according to a target time domain density, where the target time domain density is determined according to the equivalent MCS level.

30. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the phase tracking reference signal, PTRS, transmission method according to any one of claims 17 to 22.