CN110149184B

CN110149184B - Method for indicating characteristic resource of non-orthogonal multiple access, user terminal, base station and medium

Info

Publication number: CN110149184B
Application number: CN201810150548.2A
Authority: CN
Inventors: 曲鑫
Original assignee: Beijing Ziguang Zhanrui Communication Technology Co Ltd
Current assignee: Beijing Ziguang Zhanrui Communication Technology Co Ltd
Priority date: 2018-02-13
Filing date: 2018-02-13
Publication date: 2021-11-23
Anticipated expiration: 2038-02-13
Also published as: CN110149184A

Abstract

A non-orthogonal multiple access characteristic resource indication method, a user terminal, a base station and a medium, the method comprises: acquiring uplink DMRS scrambling identifiers and values of antenna port fields issued by a base station; determining a DMRS port identifier of uplink transmission according to a preset DMRS configuration type and the value of the antenna port field; according to the uplink DMRS scrambling identifier, the uplink transmission DMRS port identifier and the DMRS configuration type, determining the uplink transmission non-orthogonal multiple access characteristic resource in a preset mapping relation between the non-orthogonal multiple access characteristic resource and the DMRS; and the mapping relation between the non-orthogonal multiple access characteristic resource and the DMRS is sent by the base station in advance. The scheme can configure the non-orthogonal multiple access characteristic resource for the user terminal.

Description

Method for indicating characteristic resource of non-orthogonal multiple access, user terminal, base station and medium

Technical Field

The present invention relates to the field of wireless communications, and in particular, to a method, a user equipment, a base station, and a medium for indicating non-orthogonal multiple access characteristic resources.

Background

The Multiple Access technology plays a significant role in mobile communication, and the conventional mobile communication technology adopts a corresponding Orthogonal Multiple Access (OMA) scheme. From Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Code Division Multiple Access (CDMA) to Orthogonal Frequency Division Multiple Access (OFDMA).

The fifth generation mobile communication (5G) system puts higher technical demands for diverse application scenarios. In order to meet the technical requirement of 5G, a Non-Orthogonal Multiple Access (NOMA) technical scheme is newly proposed on the basis of the conventional OMA scheme.

Disclosure of Invention

The embodiment of the invention solves the problem of how to configure the non-orthogonal multiple access characteristic resource for the user terminal.

To solve the foregoing technical problem, an embodiment of the present invention provides a method for indicating a non-orthogonal multiple access characteristic resource, including: acquiring an uplink DMRS scrambling identifier and a value of an antenna port field issued by a base station, and determining the DMRS port identifier of uplink transmission according to a preset DMRS configuration type and the value of the antenna port field; according to the uplink DMRS scrambling identifier, the uplink transmission DMRS port identifier and the DMRS configuration type, determining the uplink transmission non-orthogonal multiple access characteristic resource in a preset mapping relation between the non-orthogonal multiple access characteristic resource and the DMRS; and the mapping relation between the non-orthogonal multiple access characteristic resource and the DMRS is sent by the base station in advance.

Optionally, the obtaining the uplink DMRS scrambling identifier and the value of the antenna port field issued by the base station includes: receiving an uplink scheduling grant DCI issued by the base station, wherein the uplink scheduling grant DCI comprises the uplink DMRS scrambling identifier and the value of the antenna port field; and acquiring the uplink DMRS scrambling identifier and the value of the antenna port field from the uplink scheduling grant DCI.

Optionally, the obtaining the uplink DMRS scrambling identifier and the value of the antenna port field from the uplink scheduling grant DCI includes: acquiring a value of a DMRS sequence initialization field from the uplink scheduling grant DCI; and determining the uplink DMRS scrambling identifier according to the value of the DMRS sequence initialization field.

Optionally, the obtaining the uplink DMRS scrambling identifier and the value of the antenna port field issued by the base station includes: receiving uplink scheduling-free activation DCI issued by the base station, wherein the uplink scheduling-free activation DCI comprises the uplink DMRS scrambling identifier and the value of the antenna port field; and acquiring the uplink DMRS scrambling identifier and the value of the antenna port field from the uplink scheduling-free activation DCI.

Optionally, the obtaining the uplink DMRS scrambling identity and the value of the antenna port field from the uplink scheduling-free activation DCI includes: acquiring a value of a DMRS sequence initialization field from the uplink scheduling-free activation DCI; and determining the uplink DMRS scrambling identifier according to the value of the DMRS sequence initialization field.

Optionally, the preset DMRS configuration type is obtained by: receiving an RRC signaling sent by a base station; and acquiring the DMRS configuration type from the RRC signaling.

Optionally, the mapping relationship between the non-orthogonal multiple access characteristic resource and the DMRS is generated as follows: and the base station generates a mapping relation between the non-orthogonal multiple access characteristic resources and the DMRS in one-to-one correspondence according to different DMRS configuration types and the configured uplink DMRS scrambling identifiers of the user terminal.

Optionally, the mapping relationship between the non-orthogonal multiple access characteristic resource and the DMRS is a mapping table, and the content corresponding to each row in the mapping table is: and the DMRS port identification and the corresponding non-orthogonal multiple access characteristic resource thereof.

Optionally, the determining, according to the uplink DMRS scrambling identifier, the uplink DMRS port identifier, and the pre-obtained DMRS configuration type, the uplink transmitted non-orthogonal multiple access characteristic resource in a mapping relationship between a preset non-orthogonal multiple access characteristic resource and a DMRS includes: searching a mapping relation between corresponding non-orthogonal multiple access characteristic resources and the DMRS according to the uplink DMRS scrambling identifier and the DMRS configuration type configured by the base station; and determining the non-orthogonal multiple access characteristic resources for uplink transmission in the mapping relation between the searched non-orthogonal multiple access characteristic resources and the DMRS according to the DMRS port identification for uplink transmission.

The embodiment of the present invention further provides a computer-readable storage medium, on which computer instructions are stored, and when the computer instructions are executed, the method for indicating non-orthogonal multiple access characteristic resources according to any one of the above-mentioned steps is performed.

The embodiment of the present invention further provides a user equipment, which includes a memory and a processor, where the memory stores computer instructions capable of running on the processor, and the computer instructions, when running, execute any of the steps of the method for indicating characteristic resources of non-orthogonal multiple access described above.

The embodiment of the invention also provides another method for indicating the non-orthogonal multiple access characteristic resources, which comprises the following steps: and the non-orthogonal multiple access characteristic resource indication method is used for sending the mapping relation between the non-orthogonal multiple access characteristic resources and the DMRS to the user terminal.

Optionally, the configuring a mapping relationship between the non-orthogonal multiple access characteristic resource corresponding to the user equipment and the DMRS includes: and configuring the mapping relation between the non-orthogonal multiple access characteristic resource corresponding to the user terminal and the DMRS according to different DMRS configuration types and the uplink DMRS scrambling identification configured for the user terminal.

Optionally, the sending the mapping relationship between the non-orthogonal multiple access characteristic resource and the DMRS to the user terminal includes: and sending the mapping relation between the non-orthogonal multiple access characteristic resource and the DMRS to the user terminal through RRC signaling.

The embodiment of the present invention further provides a base station, which includes a memory and a processor, where the memory stores computer instructions executable on the processor, and the computer instructions, when executed, execute any of the steps of the non-orthogonal multiple access characteristic resource indication method described above.

An embodiment of the present invention provides a user terminal, including: the device comprises an acquisition unit, a receiving unit and a processing unit, wherein the acquisition unit is used for acquiring uplink DMRS scrambling identifiers and values of antenna port fields issued by a base station; the DMRS port identification determining unit is used for determining the DMRS port identification of uplink transmission according to a preset DMRS configuration type and the value of the antenna port field; a non-orthogonal multiple access characteristic resource determining unit, configured to determine, according to the uplink DMRS scrambling identifier, the uplink DMRS port identifier, and the DMRS configuration type, a non-orthogonal multiple access characteristic resource for uplink transmission in a preset mapping relationship between the non-orthogonal multiple access characteristic resource and a DMRS; and the mapping relation between the non-orthogonal multiple access characteristic resource and the DMRS is sent by the base station in advance.

Optionally, the obtaining unit is configured to receive an uplink scheduling grant DCI issued by the base station, where the uplink scheduling grant DCI includes the uplink DMRS scrambling identifier and a value of the antenna port field; and acquiring the uplink DMRS scrambling identifier and the value of the antenna port field from the uplink scheduling grant DCI.

Optionally, the obtaining unit is configured to obtain a value of a DMRS sequence initialization field from the uplink scheduling grant DCI; and determining the uplink DMRS scrambling identifier according to the value of the DMRS sequence initialization field.

Optionally, the obtaining unit is configured to receive an uplink scheduling-free activation DCI sent by the base station, where the uplink scheduling-free activation DCI includes the uplink DMRS scrambling identifier and the value of the antenna port field; and acquiring the uplink DMRS scrambling identifier and the value of the antenna port field from the uplink scheduling-free activation DCI.

Optionally, the obtaining unit is configured to obtain a value of a DMRS sequence initialization field from the uplink non-scheduling activation DCI; and determining the uplink DMRS scrambling identifier according to the value of the DMRS sequence initialization field.

Optionally, the non-orthogonal multiple access characteristic resource determining unit is configured to search, according to the uplink DMRS scrambling identifier and the DMRS configuration type configured by the base station, a mapping relationship between a corresponding non-orthogonal multiple access characteristic resource and a DMRS; and determining the non-orthogonal multiple access characteristic resources for uplink transmission in the mapping relation between the searched non-orthogonal multiple access characteristic resources and the DMRS according to the DMRS port identification for uplink transmission.

An embodiment of the present invention further provides a base station, including: the configuration unit is used for configuring the mapping relation between the non-orthogonal multiple access characteristic resources corresponding to the user terminal and the DMRS; and the sending unit is used for sending the mapping relation between the non-orthogonal multiple access characteristic resource and the DMRS to the user terminal.

Optionally, the configuration unit is configured to configure, according to different DMRS configuration types and the uplink DMRS scrambling identifier configured for the user terminal, a mapping relationship between a non-orthogonal multiple access characteristic resource corresponding to the user terminal and the DMRS.

Optionally, the sending unit is configured to send, through RRC signaling, the mapping relationship between the non-orthogonal multiple access characteristic resource and the DMRS to the user terminal.

Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:

and determining an uplink DMRS scrambling identifier according to the uplink scheduling grant DCI sent by the base station. And determining the non-orthogonal multiple access characteristic resource of the uplink transmission in the mapping relation between the preset non-orthogonal multiple access characteristic resource and the DMRS according to the determined uplink DMRS scrambling identifier, the uplink transmission DMRS port identifier and the DMRS configuration type, so that the user terminal can acquire the non-orthogonal multiple access characteristic resource configured by the base station.

Furthermore, the mapping relation between the non-orthogonal multiple access characteristic resources and the DMRS is sent to the user terminal in advance, and the non-orthogonal multiple access characteristic resources transmitted by the user terminal in an uplink mode are indicated in an implicit mode, so that additional domains do not need to be introduced into the DCI to indicate the non-orthogonal multiple access characteristic resources, and signaling overhead can be effectively saved.

In addition, the non-orthogonal multiple access characteristic resources are associated with the DMRS, the non-orthogonal multiple access characteristic resources corresponding to each user terminal can be different or the same, and the base station can realize the scheduling of the non-orthogonal multiple access characteristic resources by scheduling different DMRSs for the user terminals, so that the scheduling flexibility of the base station is improved.

Drawings

Fig. 1 is a flowchart of a method for indicating non-orthogonal multiple access characteristic resources according to an embodiment of the present invention;

FIG. 2 is a flow chart of another method for indicating non-orthogonal multiple access characteristic resources according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a user terminal in an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a base station in the embodiment of the present invention.

Detailed Description

In the prior art, a Non-Orthogonal Multiple Access (NOMA) technical scheme is newly proposed on the basis of the conventional OMA scheme. However, the prior art does not provide the problem of how to configure the non-orthogonal multiple access characteristic resource for the user terminal.

In the embodiment of the invention, the uplink DMRS scrambling identifier is determined according to the uplink scheduling grant DCI sent by the base station. And determining the non-orthogonal multiple access characteristic resource of the uplink transmission in the mapping relation between the preset non-orthogonal multiple access characteristic resource and the DMRS according to the determined uplink DMRS scrambling identifier, the uplink transmission DMRS port identifier and the DMRS configuration type, so that the user terminal can acquire the non-orthogonal multiple access characteristic resource configured by the base station.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

An embodiment of the present invention provides a method for indicating a non-orthogonal multiple access characteristic resource, which is described in detail below with reference to fig. 1 through specific steps.

Step S101, obtaining uplink DMRS scrambling identification and antenna port field value issued by a base station.

In a specific implementation, the base station may send Downlink scheduling grant (Downlink Control Information, DCI) to the user equipment. In the uplink scheduling grant DCI, an uplink DMRS scrambling identity and a value of an antenna port field may be included. After receiving the DCI issued by the base station, the ue may obtain a scrambling identifier of an uplink Demodulation Reference Signal (DMRS) and a value of an antenna port field from the DCI.

The format of the uplink scheduling grant DCI transmitted by the base station to the user terminal may be DCI format 0-1. In other words, the base station transmits the uplink scheduling grant DCI0-1 to the user terminal. The specific content and meaning of DCI format 0-1 may refer to definitions in the prior art, and are not described in detail in this embodiment of the present invention.

It can be understood that the base station may also issue the uplink scheduling grant to the user terminal by using DCI with other formats, or issue the uplink scheduling grant to the user terminal by using other signaling, and is not limited to the DCI0-1 provided in the above embodiment of the present invention.

In specific implementation, when receiving an uplink scheduling grant DCI issued by a base station, a user terminal may determine an uplink DMRS scrambling identifier according to the received uplink scheduling grant DCI.

Specifically, after receiving the uplink scheduling grant DCI transmitted by the base station, the user terminal may acquire a value of a DMRS sequence initialization (DMRS sequence initialization) field from the uplink scheduling grant DCI. The user terminal can determine the uplink DMRS scrambling identifier according to the obtained value of the DMRS sequence initialization field.

In specific implementation, a mapping relationship between the value of the DMRS sequence initialization field and the uplink DMRS scrambling identifier may be established in advance. After the value of the DMRS sequence initialization field is obtained, the corresponding uplink DMRS scrambling identifier can be obtained according to the mapping relation between the value of the DMRS sequence initialization field and the uplink DMRS scrambling identifier.

For example, the mapping relationship between the value of the DMRS sequence initialization field and the uplink DMRS scrambling identifier is pre-established as follows: when the value of the DMRS sequence initialization field is 0, the uplink DMRS scrambling identifier is 0; when the value of the DMRS sequence initialization field is 1, the uplink DMRS scrambling identity is 65535.

It can be understood that the mapping relationship between the value of the DMRS sequence initialization field and the uplink DMRS scrambling identifier is not limited to the above example, and may be set according to actual application requirements, which is not described herein.

In a specific implementation, the base station may also send uplink scheduling-free activation DCI to the user terminal. In the uplink scheduling-free activation DCI, an uplink DMRS scrambling identity and a value of an antenna port field may be included. After receiving the uplink scheduling-free activation DCI issued by the base station, the user terminal may obtain the uplink DMRS scrambling identifier and the value of the antenna port field from the uplink DMRS scrambling identifier.

The format of the uplink scheduling-free activation DCI sent by the base station to the user terminal can be DCI format 0-1. In other words, the base station sends the uplink scheduling-free activation DCI0-1 to the user terminal. The specific content and meaning of DCI format 0-1 may refer to definitions in the prior art, and are not described in detail in this embodiment of the present invention.

It can be understood that the base station may also use DCI with other formats to issue uplink scheduling-free activation to the user terminal, or use other signaling to issue uplink scheduling-free activation to the user terminal, and is not limited to the DCI0-1 provided in the above embodiments of the present invention.

In a specific implementation, when receiving the uplink scheduling-free activation DCI issued by the base station, the user terminal may determine the uplink DMRS scrambling identifier according to the received uplink scheduling-free activation DCI.

Specifically, after receiving the uplink non-scheduling activation DCI transmitted by the base station, the user terminal may acquire a value of a DMRS sequence initialization (DMRS sequence initialization) field from the uplink non-scheduling activation DCI. The user terminal can determine the uplink DMRS scrambling identifier according to the obtained value of the DMRS sequence initialization field.

It can be understood that the base station may also issue other types of information to the user terminal, so that the user terminal can obtain the uplink DMRS scrambling identifier and the value of the antenna port field issued by the base station, as long as the information issued by the base station to the user terminal includes the uplink DMRS scrambling identifier and the value of the antenna port field, and the embodiment of the present invention does not limit the type of the information issued by the base station to the user terminal.

In the embodiment of the present invention, the DMRS scrambling identifier may be a DMRS scrambling ID, or may be other identifiers capable of representing DMRS scrambling information, which is not described herein again.

And step S102, determining the DMRS port identification of the uplink transmission according to a preset DMRS configuration type and the value of the antenna port field.

In specific implementation, the user terminal may determine a DMRS port identifier for uplink transmission according to a value of an Antenna port (Antenna ports) field and a preset DMRS configuration type. In the embodiment of the present invention, the DMRS port identifier may be a DMRS port number.

In a specific implementation, the base station may transmit the DMRS configuration type to the user terminal in advance. Specifically, the base station may transmit the DMRS configuration type to the user terminal through Radio Resource Control (RRC) signaling. After receiving the RRC signaling sent by the base station, the user terminal can acquire the DMRS configuration type.

And step S103, determining the non-orthogonal multiple access characteristic resource of uplink transmission in the mapping relation between the preset non-orthogonal multiple access characteristic resource and the DMRS.

In specific implementation, the non-orthogonal multiple access characteristic resource for uplink transmission may be determined in a mapping relationship between a preset non-orthogonal multiple access characteristic resource and a DMRS according to the uplink DMRS scrambling identifier, the uplink DMRS port identifier, and the DMRS configuration type.

In a specific implementation, the mapping relationship between the non-orthogonal multiple access characteristic resource and the DMRS may be generated in advance by the base station, and the base station may transmit the generated mapping relationship between the non-orthogonal multiple access characteristic resource and the DMRS to the mobile terminal. For different user terminals, the base station may generate mapping relationships between the non-orthogonal multiple access characteristic resources and the DMRS, which correspond to the user terminals one to one, and the mapping relationships between the non-orthogonal multiple access characteristic resources and the DMRS, which correspond to the different user terminals, may be the same or different.

The following describes a process of generating a mapping relationship between a non-orthogonal multiple access characteristic resource and a DMRS by a base station in an embodiment of the present invention.

In specific implementation, the base station may generate a mapping relationship between the non-orthogonal multiple access characteristic resource and the DMRS, which correspond to one another, for each combination of each DMRS configuration type and the uplink DMRS scrambling identifier of the user terminal according to different DMRS configuration types and configured uplink DMRS scrambling identifiers of the user terminal. The mapping relationship between the non-orthogonal multiple access characteristic resource and the DMRS may be presented in a format of a mapping table, or may be presented in other mapping manners.

In practical applications, it is known that the DMRS configuration type configured by the base station for the user terminal may include: DMRS configuration type 1(DMRS-config-type 1) and DMRS configuration type 2(DMRS-config-type 2). For the same user terminal, the base station may configure one uplink DMRS scrambling identity (UL-DMRS-scrambling-ID) for the user terminal, and may also configure two uplink DMRS scrambling identities for the user terminal.

When the base station configures an uplink DMRS scrambling identifier for the user terminal, the base station can configure the mapping relationship between the non-orthogonal multiple access characteristic resource corresponding to the DMRS configuration type 1 and the DMRS and the mapping relationship between the non-orthogonal multiple access characteristic resource corresponding to the DMRS configuration type 2 and the DMRS for the user terminal respectively.

When a base station configures two uplink DMRS scrambling identifiers for a user terminal, the two uplink DMRS scrambling identifiers are respectively set as: the device comprises an uplink DMRS scrambling identifier 1 and an uplink DMRS scrambling identifier 2. Aiming at the DMRS configuration type 1, the base station can configure the mapping relation between the non-orthogonal multiple access characteristic resource corresponding to the uplink DMRS scrambling identifier 1 and the DMRS and the mapping relation between the non-orthogonal multiple access characteristic resource corresponding to the uplink DMRS scrambling identifier 2 and the DMRS for the user terminal; aiming at the DMRS configuration type 2, the base station can configure the mapping relation between the non-orthogonal multiple access characteristic resource corresponding to the uplink DMRS scrambling identifier 1 and the DMRS and the mapping relation between the non-orthogonal multiple access characteristic resource corresponding to the uplink DMRS scrambling identifier 2 and the DMRS for the user terminal.

That is to say, for different DMRS configuration types and different uplink DMRS scrambling identities, a mapping relationship between non-orthogonal multiple access characteristic resources and DMRSs, which correspond to the DMRS configuration types and the uplink DMRS scrambling identities one to one, may be configured for the user equipment. And aiming at different DMRS configuration types and different uplink DMRS scrambling identifications, the mapping relations between the corresponding non-orthogonal multiple access characteristic resources and the DMRS can be different.

In other words, for different DMRS configuration types and different uplink DMRS scrambling identities, the base station may configure mapping relationships between multiple different non-orthogonal multiple access characteristic resources and DMRSs. The base station may issue mapping relationships between all the non-orthogonal multiple access characteristic resources configured for the user terminal and the DMRS to the user terminal.

In particular implementations, the non-orthogonal multiple access characteristic resources may include at least one of the following: codebooks, codewords, sequences, interleavers and/or mapping methods, demodulation reference signals, preambles, spatial domain resources, power domain resources, and/or the like. It is to be understood that the non-orthogonal multiple access characteristic resource may not be limited to the above-mentioned example, and is not described herein.

When the base station configures the non-orthogonal multiple access characteristic resources for the user terminal, the base station may configure one type of non-orthogonal multiple access characteristic resources for the user terminal according to actual application requirements, or may configure two or more types of non-orthogonal multiple access characteristic resources for the user terminal.

When the base station configures a type of non-orthogonal multiple access characteristic resource for the user terminal, all the resources of the type of non-orthogonal multiple access characteristic resource can be combined into a set. The mapping relationship between the non-orthogonal multiple access characteristic resource configured by the base station for the user terminal and the DMRS is a mapping table, and in the mapping table, the content corresponding to each row may be: DMRS port identification and the non-orthogonal multiple access characteristic resource corresponding to the DMRS port identification.

For example, the base station configures a type of non-orthogonal multiple access characteristic resource for the user terminal, where the type of non-orthogonal multiple access characteristic resource is a codeword. In a mapping table, which is a mapping relation between non-orthogonal multiple access characteristic resources configured for a user terminal by a base station and a DMRS, the content corresponding to a first row is as follows: DMRS port 0, codeword 1 corresponding to DMRS port 0.

When the base station configures two or more types of non-orthogonal multiple access characteristic resources for the user terminal, all the resources of each type of non-orthogonal multiple access characteristic resources can form a set. The mapping relationship between the non-orthogonal multiple access characteristic resource configured by the base station for the user terminal and the DMRS is a mapping table, and in the mapping table, the content corresponding to each row may be: the DMRS port identification and one of each type of non-orthogonal multiple access characteristic resource corresponding to the DMRS port identification.

For example, the base station configures two types of non-orthogonal multiple access feature resources for the user terminal, where the first type of non-orthogonal multiple access feature resource is a codeword, and the second type of non-orthogonal multiple access feature resource is a preamble. In a mapping table, which is a mapping relation between non-orthogonal multiple access characteristic resources configured for a user terminal by a base station and a DMRS, the content corresponding to a first row is as follows: DMRS port 0, codeword 1 corresponding to DMRS port 0, and preamble 1 corresponding to DMRS port 0.

After acquiring the uplink DMRS scrambling identifier and the uplink transmission DMRS port identifier, the user terminal can determine the uplink transmission non-orthogonal multiple access characteristic resource in the mapping relation between the preset non-orthogonal multiple access characteristic resource and the DMRS by combining the DMRS configuration type configured in advance by the base station.

In the above embodiments of the present invention, it can be known that the base station may issue a mapping relationship between a plurality of non-orthogonal multiple access characteristic resources and the DMRS to the user equipment. Therefore, the user terminal can search the mapping relation between the corresponding non-orthogonal multiple access characteristic resource and the DMRS from the mapping relation between the plurality of non-orthogonal multiple access characteristic resources and the DMRS according to the uplink DMRS scrambling identifier and the DMRS configuration type configured by the base station. The user terminal can determine the non-orthogonal multiple access characteristic resource of the uplink transmission from the searched mapping relation between the non-orthogonal multiple access characteristic resource and the DMRS according to the DMRS port identification of the uplink transmission.

For example, the mapping relationship between the non-orthogonal multiple access characteristic resource configured by the base station for the user terminal and the DMRS includes: mapping relation 1, mapping relation 2, mapping relation 3, and mapping relation 4, wherein:

the mapping relation 1 corresponds to a DMRS configuration type 1 and an uplink DMRS scrambling identifier 1;

the mapping relation 2 corresponds to a DMRS configuration type 2 and an uplink DMRS scrambling identifier 1;

the mapping relation 3 corresponds to a DMRS configuration type 1 and an uplink DMRS scrambling identifier 2;

and the mapping relation 4 corresponds to a DMRS configuration type 2 and an uplink DMRS scrambling identifier 2.

And the base station configures the DMRS configuration type corresponding to the user terminal as DMRS configuration type 1, and the corresponding uplink DMRS scrambling identifier is 1, so that the user terminal selects the mapping relation 1, and determines the non-orthogonal multiple access characteristic resource of uplink transmission from the mapping relation 1 according to the uplink transmission DMRS port identifier.

In practical application, when the DMRS port identifier for uplink transmission is determined according to the value of the antenna port field, the DMRS port identifier may be determined by using a search method in an existing protocol. In an embodiment of the present invention, after the value of the antenna port field is obtained, the DMRS port identifier for uplink transmission may be searched and determined in the 3GPP TS 38.212 V15.0.0. Specifically, the process of determining the DMRS port identifier for uplink transmission according to the value of the antenna port field may refer to the specification in the existing protocol, which is not described herein again.

The following describes a method for indicating non-orthogonal multiple access characteristic resources provided in the above embodiments of the present invention by way of example.

The base station configures a type of non-orthogonal multiple access characteristic resources for the user terminal, and the non-orthogonal multiple access characteristic resources configured by the base station are codebooks. The corresponding set of the non-orthogonal characteristic multiple access characteristic resources is as follows:

each element in the set is a codebook.

The base station configures two uplink DMRS scrambling IDs for the user terminal, wherein the two uplink DMRS scrambling IDs are respectively 0 and 65535, and the base station indicates the uplink DMRS scrambling ID through 1 bit of DMRS sequence initialization (DMRS sequence initialization) in DCI 0-1: when the value of the field is 0, indicating that the DMRS scrambling ID corresponding to the user terminal is 0; otherwise, when the value of the field is 1, indicating that the DMRS scrambling ID corresponding to the user terminal is 65535.

In a 5G New Radio (NR), a Physical Uplink Shared Channel (PUSCH) has two DMRS configuration types, which are DMRS configuration type 1 and DMRS configuration type 2 in sequence, where: the DMRS configuration type 1 comprises 8 DMRS ports, and the numbers of the DMRS ports are 0-7 in sequence; the DMRS configuration type 2 comprises 12 DMRS ports, and the numbers are 0-11 in sequence.

Therefore, for DMRS configuration type 1, when the base station configures a DMRS scrambling ID of 0 for the user terminal, the corresponding DMRS port and mapping table of non-orthogonal multiple access characteristic resources refer to table 1.

TABLE 1

DMRS ports	Non-orthogonal multiple access characteristic resource
		0	[1 0 1 0]^T
1	[0 1 0 1]^T
		2	[1 1 0 0]^T
3	[0 0 1 1]^T
		4	[1 0 0 1]^T
5	[0 1 1 0]^T
		6	[1 0 1 0]^T
7	[0 1 0 1]^T

For DMRS configuration type 1, when the base station configures a DMRS scrambling ID of 65535 for the user equipment, the corresponding DMRS port and mapping table of the non-orthogonal multiple access characteristic resource refer to table 2.

TABLE 2

DMRS ports	Non-orthogonal multiple access characteristic resource
		0	[0 1 1 0]^T
1	[1 0 0 1]^T
		2	[0 0 1 1]^T
3	[1 1 0 0]^T
		4	[0 1 0 1]^T
5	[1 0 1 0]^T
		6	[0 1 1 0]^T
7	[1 0 0 1]^T

And aiming at the DMRS configuration type 2, when the base station configures the DMRS scrambling ID for the user terminal to be 0, the corresponding DMRS port and a mapping table of the non-orthogonal multiple access characteristic resource refer to a table 3.

TABLE 3

For DMRS configuration type 2, when the base station configures the user terminal with DMRS scrambling ID of 65535, the corresponding DMRS port and mapping table of non-orthogonal multiple access characteristic resources refer to table 4.

TABLE 4

DMRS ports	Non-orthogonal multiple access characteristic resource
		0	[0 1 1 0]^T
1	[1 0 0 1]^T
		2	[0 0 1 1]^T
3	[1 1 0 0]^T
		4	[0 1 0 1]^T
5	[1 0 1 0]^T
		6	[0 1 1 0]^T
7	[1 0 0 1]^T
		8	[0 0 1 1]^T
9	[1 1 0 0]^T
		10	[0 1 0 1]^T
11	[1 0 1 0]^T

The base station configures the DMRS configuration type for the user terminal to be the DMRS configuration type 1 through RRC signaling. At time T1, the ue receives the DCI0-1 sent by the base station. The user terminal learns that the value of a DMRS sequence initialization (DMRS sequence initialization) field is 0 and the value of an Antenna port field is 100 from the received DCI 0-1. The user terminal determines that the DMRS scrambling ID is 0 according to the fact that the value of the DMRS sequence initialization field is 0; according to the value of the antenna port field being 100, in 3GPP TS 38.212V15.0.0, DMRS ports determined to be scheduled by the base station can be searched.

In the embodiment of the present invention, when the value of the antenna port field is found and determined to be 100, the value corresponds to row 5 in table 5, that is, DMRS port 2. Therefore, the ue can determine the non-orthogonal multiple access codebook used for uplink transmission by the ue as [ 1100 ] by looking up the 3 rd row in table 1]^T。

TABLE 5

Numbering	DMRS CDM group numbering	DMRS ports
			0	1	0
1	1	1
			2	2	0
3	2	1
			4	2	2
5	2	3
			6-7	Retention	Retention

The base station configures the DMRS configuration type for the user terminal to be the DMRS configuration type 2 through RRC signaling. At time T2, the ue receives the DCI0-1 sent by the base station. The user terminal learns that the value of a DMRS sequence initialization (DMRS sequence initialization) field is 1 and the value of an Antenna port field is 10110 from the received DCI 0-1. The user terminal determines that the DMRS scrambling ID is 65535 according to the fact that the value of the DMRS sequence initialization field is 1; according to the value of 10110 of the antenna port field, in 3GPP TS 38.212V15.0.0, a DMRS port determined to be scheduled by the base station can be searched.

In the embodiment of the present invention, when the value of the antenna port field is determined to be 10110, the table corresponds to row 23 in table 6, that is, DMRS port 10. Therefore, the temperature of the molten metal is controlled,the user terminal can determine the non-orthogonal multiple access codebook scheduled by the base station through the 11 th line in the lookup table 4, and the non-orthogonal multiple access codebook is [ 0101 ]]^T。

TABLE 6

Numbering	DMRS CDM group numbering	DMRS ports	Number of preamble symbols
				0	1	0	1
1	1	1	1
				2	2	0	1
3	2	1	1
				4	2	2	1
5	2	3	1
				6	3	0	1
7	3	1	1
				8	3	2	1
9	3	3	1
				10	3	4	1
11	3	5	1
				12	3	0	2
13	3	1	2
				14	3	2	2
15	3	3	2
				16	3	4	2
17	3	5	2
				18	3	6	2
19	3	7	2
				20	3	8	2
21	3	9	2
				22	3	10	2
23	3	11	2
				24	1	0	2
25	1	1	2
				26	1	6	2
27	1	7	2
				28-31	Retention	Retention	Retention

Therefore, in the embodiment of the invention, the uplink DMRS scrambling identifier is determined according to the uplink scheduling grant DCI sent by the base station. And determining the non-orthogonal multiple access characteristic resource of the uplink transmission in the mapping relation between the preset non-orthogonal multiple access characteristic resource and the DMRS according to the determined uplink DMRS scrambling identifier, the uplink transmission DMRS port identifier and the DMRS configuration type, so that the user terminal can acquire the non-orthogonal multiple access characteristic resource configured by the base station.

In addition, the base station sends the mapping relation between the non-orthogonal multiple access characteristic resources and the DMRS to the user terminal in advance. When the base station dynamically configures the non-orthogonal multiple access characteristic resources for the user terminal, only the field value initialized by the DMRS sequence of the DCI and the field value of the antenna port need to be set, and no additional domain is required to be introduced into the DCI to indicate the non-orthogonal multiple access characteristic resources, so that the signaling overhead can be effectively saved.

Referring to fig. 2, another method for indicating non-orthogonal multiple access characteristic resources in the embodiment of the present invention is shown, and the following detailed description is made through specific steps.

Step S201, configuring the mapping relation between the non-orthogonal multiple access characteristic resource corresponding to the user terminal and the DMRS.

In specific implementation, a base station can generate a mapping relation between non-orthogonal multiple access characteristic resources and DMRS in one-to-one correspondence according to different DMRS configuration types and configured uplink DMRS scrambling identifiers.

In specific implementation, for different user terminals, the base station may configure different mapping relationships between the non-orthogonal multiple access characteristic resources and the DMRS. In other words, mapping relationships between non-orthogonal multiple access characteristic resources and DMRSs corresponding to different user terminals may be the same or different. The base station can realize the scheduling of the non-orthogonal multiple access characteristic resources by scheduling different DMRSs for the user terminal, thereby improving the scheduling flexibility of the base station.

Step S202, the mapping relation between the non-orthogonal multiple access characteristic resource and the DMRS is sent to the user terminal.

In a specific implementation, after completing the mapping relationship between the non-orthogonal multiple access characteristic resource of the user terminal and the DMRS, the base station may send the configured mapping relationship between the non-orthogonal multiple access characteristic resource and the DMRS to the user terminal through RRC signaling.

In the above embodiments of the present invention, it can be known that the base station may configure a plurality of mapping relationships between the non-orthogonal multiple access characteristic resources and the DMRS for the user terminal, and therefore, the base station may send all the mapping relationships between the non-orthogonal multiple access characteristic resources and the DMRS configured for the user terminal to the user terminal through RRC signaling.

It is to be understood that the base station may also send the mapping relationship between the configured non-orthogonal multiple access characteristic resource and the DMRS to the user terminal through signaling in other formats.

Referring to fig. 3, an embodiment of the present invention provides a user terminal 30, including: an obtaining unit 301, a DMRS port identifier determining unit 302, and a non-orthogonal multiple access characteristic resource determining unit 303, where:

an obtaining unit 301, configured to obtain an uplink DMRS scrambling identifier and a value of an antenna port field that are issued by a base station;

a DMRS port identifier determining unit 302, configured to determine a DMRS port identifier for uplink transmission according to a preset DMRS configuration type and a value of the antenna port field;

a non-orthogonal multiple access characteristic resource determining unit 303, configured to determine, according to the uplink DMRS scrambling identifier, the uplink DMRS port identifier, and the DMRS configuration type, a non-orthogonal multiple access characteristic resource for uplink transmission in a preset mapping relationship between the non-orthogonal multiple access characteristic resource and a DMRS; and the mapping relation between the non-orthogonal multiple access characteristic resource and the DMRS is sent by the base station in advance.

In a specific implementation, the obtaining unit 301 may be configured to receive an uplink scheduling grant DCI issued by the base station, where the uplink scheduling grant DCI includes the uplink DMRS scrambling identifier and the value of the antenna port field; and acquiring the uplink DMRS scrambling identifier and the value of the antenna port field from the uplink scheduling grant DCI.

In a specific implementation, the obtaining unit 301 may be configured to obtain a value of a DMRS sequence initialization field from the uplink scheduling grant DCI; and determining the uplink DMRS scrambling identifier according to the value of the DMRS sequence initialization field.

In a specific implementation, the obtaining unit 301 may be configured to receive uplink scheduling-free activation DCI sent by the base station, where the uplink scheduling-free activation DCI includes the uplink DMRS scrambling identifier and the value of the antenna port field; and acquiring the uplink DMRS scrambling identifier and the value of the antenna port field from the uplink scheduling-free activation DCI.

In a specific implementation, the obtaining unit 301 may be configured to obtain a value of a DMRS sequence initialization field from the uplink scheduling-free active DCI; and determining the uplink DMRS scrambling identifier according to the value of the DMRS sequence initialization field.

In a specific implementation, the preset DMRS configuration type may be obtained by: receiving an RRC signaling sent by a base station; and acquiring the DMRS configuration type from the RRC signaling.

In a specific implementation, the mapping relationship between the non-orthogonal multiple access characteristic resource and the DMRS may be generated as follows: and the base station generates a mapping relation between the non-orthogonal multiple access characteristic resources and the DMRS in one-to-one correspondence according to different DMRS configuration types and the configured uplink DMRS scrambling identifiers of the user terminal.

In a specific implementation, the mapping relationship between the non-orthogonal multiple access characteristic resource and the DMRS may be a mapping table, and the content corresponding to each row in the mapping table is: and the DMRS port identification and the corresponding non-orthogonal multiple access characteristic resource thereof.

In a specific implementation, the non-orthogonal multiple access characteristic resource determining unit 303 may be configured to search, according to the uplink DMRS scrambling identifier and the DMRS configuration type configured by the base station, a mapping relationship between a corresponding non-orthogonal multiple access characteristic resource and a DMRS; and determining the non-orthogonal multiple access characteristic resources for uplink transmission in the mapping relation between the searched non-orthogonal multiple access characteristic resources and the DMRS according to the DMRS port identification for uplink transmission.

The embodiment of the present invention further provides a computer-readable storage medium, where a computer instruction is stored, and when the computer instruction runs, the steps of the non-orthogonal multiple access characteristic resource indication method in steps S101 to S103 are executed, which is not described herein again.

The embodiment of the present invention further provides another user terminal, which includes a memory and a processor, where the memory stores a computer instruction that can be executed on the processor, and the computer instruction executes the steps of the non-orthogonal multiple access characteristic resource indication method in steps S101 to S103 when running, which is not described herein again.

Referring to fig. 4, an embodiment of the present invention provides a base station 40, including: a configuration unit 401 and a sending unit 402, wherein:

a configuration unit 401, configured to configure a mapping relationship between a non-orthogonal multiple access characteristic resource corresponding to a user equipment and a DMRS;

a sending unit 402, configured to send the mapping relationship between the non-orthogonal multiple access characteristic resource and the DMRS to the user terminal.

In a specific implementation, the configuring unit 401 may be configured to configure, according to different DMRS configuration types and an uplink DMRS scrambling identifier configured for the user equipment, a mapping relationship between a non-orthogonal multiple access characteristic resource corresponding to the user equipment and the DMRS.

In a specific implementation, the sending unit 402 may be configured to send, to the user terminal, a mapping relationship between the non-orthogonal multiple access characteristic resource and the DMRS through RRC signaling.

The embodiment of the present invention further provides another computer-readable storage medium, where a computer instruction is stored, and the step of the non-orthogonal multiple access characteristic resource indication method in steps S201 to S202 is executed when the computer instruction runs, which is not described herein again.

The embodiment of the present invention further provides another base station, which includes a memory and a processor, where the memory stores a computer instruction that can be executed on the processor, and when the computer instruction is executed, the step of the non-orthogonal multiple access feature resource indication method in step S201 to step S202 is executed, which is not described herein again.

Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by instructing the relevant hardware through a program, which may be stored in a computer-readable storage medium, and the storage medium may include: ROM, RAM, magnetic or optical disks, and the like.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method for indicating non-orthogonal multiple access characteristic resources is characterized by comprising the following steps:

acquiring uplink DMRS scrambling identifiers and values of antenna port fields issued by a base station;

determining a DMRS port identifier of uplink transmission according to a preset DMRS configuration type and the value of the antenna port field;

according to the uplink DMRS scrambling identifier, the uplink transmission DMRS port identifier and the DMRS configuration type, determining the uplink transmission non-orthogonal multiple access characteristic resource in a preset mapping relation between the non-orthogonal multiple access characteristic resource and the DMRS; and the mapping relation between the non-orthogonal multiple access characteristic resource and the DMRS is sent by the base station in advance.

2. The method for indicating characteristic resources of non-orthogonal multiple access according to claim 1, wherein the obtaining the uplink DMRS scrambling identity and the value of the antenna port field issued by the base station includes:

receiving an uplink scheduling grant DCI issued by the base station, wherein the uplink scheduling grant DCI comprises the uplink DMRS scrambling identifier and the value of the antenna port field;

and acquiring the uplink DMRS scrambling identifier and the value of the antenna port field from the uplink scheduling grant DCI.

3. The method for indicating characteristic resources of non-orthogonal multiple access as claimed in claim 2, wherein the obtaining the uplink DMRS scrambling identity and the value of the antenna port field from the uplink scheduling grant DCI comprises:

acquiring a value of a DMRS sequence initialization field from the uplink scheduling grant DCI;

and determining the uplink DMRS scrambling identifier according to the value of the DMRS sequence initialization field.

4. The method for indicating characteristic resources of non-orthogonal multiple access according to claim 1, wherein the obtaining the uplink DMRS scrambling identity and the value of the antenna port field issued by the base station includes:

receiving uplink scheduling-free activation DCI issued by the base station, wherein the uplink scheduling-free activation DCI comprises the uplink DMRS scrambling identifier and the value of the antenna port field;

and acquiring the uplink DMRS scrambling identifier and the value of the antenna port field from the uplink scheduling-free activation DCI.

5. The method for indicating non-orthogonal multiple access characteristic resources of claim 4, wherein the obtaining the uplink DMRS scrambling identity and the value of the antenna port field from the uplink scheduling-free activation DCI comprises:

acquiring a value of a DMRS sequence initialization field from the uplink scheduling-free activation DCI;

6. The method for indicating characteristic resources of non-orthogonal multiple access according to claim 1, wherein the preset DMRS configuration type is obtained by:

receiving an RRC signaling sent by a base station;

and acquiring the DMRS configuration type from the RRC signaling.

7. The method of claim 1, wherein the mapping relationship between the non-orthogonal multiple access characteristic resource and the DMRS is generated as follows:

and the base station generates a mapping relation between the non-orthogonal multiple access characteristic resources and the DMRS in one-to-one correspondence according to different DMRS configuration types and the configured uplink DMRS scrambling identifiers of the user terminal.

8. The method of claim 7, wherein the mapping relationship between the non-orthogonal multiple access characteristic resource and the DMRS is a mapping table, and each row in the mapping table corresponds to: and the DMRS port identification and the corresponding non-orthogonal multiple access characteristic resource thereof.

9. The method for indicating the characteristic resource of the non-orthogonal multiple access of claim 8, wherein the determining the characteristic resource of the non-orthogonal multiple access of the uplink transmission in the mapping relationship between the preset characteristic resource of the non-orthogonal multiple access and the DMRS according to the uplink DMRS scrambling identifier, the uplink transmission DMRS port identifier, and the pre-obtained DMRS configuration type comprises:

searching a mapping relation between corresponding non-orthogonal multiple access characteristic resources and the DMRS according to the uplink DMRS scrambling identifier and the DMRS configuration type configured by the base station;

and determining the non-orthogonal multiple access characteristic resources for uplink transmission in the mapping relation between the searched non-orthogonal multiple access characteristic resources and the DMRS according to the DMRS port identification for uplink transmission.

10. A method for indicating non-orthogonal multiple access characteristic resources is characterized by comprising the following steps:

configuring a mapping relation between a non-orthogonal multiple access characteristic resource corresponding to a user terminal and a DMRS;

and sending the mapping relation between the non-orthogonal multiple access characteristic resources and the DMRS to the user terminal.

11. The method of claim 10, wherein the configuring the mapping relationship between the non-orthogonal multiple access characteristic resource corresponding to the user terminal and the DMRS comprises:

and configuring the mapping relation between the non-orthogonal multiple access characteristic resource corresponding to the user terminal and the DMRS according to different DMRS configuration types and the uplink DMRS scrambling identification configured for the user terminal.

12. The method for indicating the non-orthogonal multiple access characteristic resource of claim 11, wherein the mapping relationship between the non-orthogonal multiple access characteristic resource and the DMRS is a mapping table, and each row in the mapping table corresponds to: and the DMRS port identification and the corresponding non-orthogonal multiple access characteristic resource thereof.

13. The method of indicating the non-orthogonal multiple access characteristic resource of claim 10, wherein the transmitting the mapping relationship of the non-orthogonal multiple access characteristic resource and the DMRS to the user terminal comprises: and sending the mapping relation between the non-orthogonal multiple access characteristic resource and the DMRS to the user terminal through RRC signaling.

14. A user terminal, comprising:

the device comprises an acquisition unit, a receiving unit and a processing unit, wherein the acquisition unit is used for acquiring uplink DMRS scrambling identifiers and values of antenna port fields issued by a base station; the DMRS port identification determining unit is used for determining the DMRS port identification of uplink transmission according to a preset DMRS configuration type and the value of the antenna port field;

a non-orthogonal multiple access characteristic resource determining unit, configured to determine, according to the uplink DMRS scrambling identifier, the uplink DMRS port identifier, and the DMRS configuration type, a non-orthogonal multiple access characteristic resource for uplink transmission in a preset mapping relationship between the non-orthogonal multiple access characteristic resource and a DMRS; and the mapping relation between the non-orthogonal multiple access characteristic resource and the DMRS is sent by the base station in advance.

15. The user terminal of claim 14, wherein the obtaining unit is configured to receive an uplink scheduling grant DCI sent by the base station, where the uplink scheduling grant DCI includes the uplink DMRS scrambling identifier and a value of the antenna port field; and acquiring the uplink DMRS scrambling identifier and the value of the antenna port field from the uplink scheduling grant DCI.

16. The user terminal according to claim 15, wherein the obtaining unit is configured to obtain a value of a DMRS sequence initialization field from the uplink scheduling grant, DCI; and determining the uplink DMRS scrambling identifier according to the value of the DMRS sequence initialization field.

17. The ue according to claim 14, wherein the obtaining unit is configured to receive an uplink non-scheduling activation DCI sent by the base station, where the uplink non-scheduling activation DCI includes the uplink DMRS scrambling identifier and the value of the antenna port field; and acquiring the uplink DMRS scrambling identifier and the value of the antenna port field from the uplink scheduling-free activation DCI.

18. The user terminal of claim 17, wherein the obtaining unit is configured to obtain a value of a DMRS sequence initialization field from the uplink scheduling-free active DCI; and determining the uplink DMRS scrambling identifier according to the value of the DMRS sequence initialization field.

19. The user terminal of claim 14, wherein the preset DMRS configuration type is obtained by: receiving an RRC signaling sent by a base station; and acquiring the DMRS configuration type from the RRC signaling.

20. The user terminal of claim 19, wherein the mapping relationship of the non-orthogonal multiple access characteristic resource and the DMRS is generated as follows: and the base station generates a mapping relation between the non-orthogonal multiple access characteristic resources and the DMRS in one-to-one correspondence according to different DMRS configuration types and the configured uplink DMRS scrambling identifiers of the user terminal.

21. The user terminal of claim 20, wherein the mapping relationship between the non-orthogonal multiple access characteristic resource and the DMRS is a mapping table, and each row in the mapping table corresponds to: and the DMRS port identification and the corresponding non-orthogonal multiple access characteristic resource thereof.

22. The user terminal according to claim 21, wherein the non-orthogonal multiple access characteristic resource determining unit is configured to search, according to the uplink DMRS scrambling identifier and the DMRS configuration type configured by the base station, a mapping relationship between the corresponding non-orthogonal multiple access characteristic resource and the DMRS; and determining the non-orthogonal multiple access characteristic resources for uplink transmission in the mapping relation between the searched non-orthogonal multiple access characteristic resources and the DMRS according to the DMRS port identification for uplink transmission.

23. A base station, comprising:

the configuration unit is used for configuring the mapping relation between the non-orthogonal multiple access characteristic resources corresponding to the user terminal and the DMRS;

and the sending unit is used for sending the mapping relation between the non-orthogonal multiple access characteristic resource and the DMRS to the user terminal.

24. The base station of claim 23, wherein the configuring unit is configured to configure a mapping relationship between a non-orthogonal multiple access characteristic resource corresponding to the user terminal and a DMRS according to different DMRS configuration types and an uplink DMRS scrambling identifier configured for the user terminal.

25. The base station of claim 24, wherein the mapping relationship of the non-orthogonal multiple access characteristic resource and the DMRS is a mapping table, and each row in the mapping table corresponds to: and the DMRS port identification and the corresponding non-orthogonal multiple access characteristic resource thereof.

26. The base station of claim 23, wherein the transmitting unit is configured to transmit the mapping relationship between the non-orthogonal multiple access characteristic resource and the DMRS to the user terminal through RRC signaling.

27. A computer readable storage medium having computer instructions stored thereon, wherein the computer instructions when executed perform the steps of the method of any of claims 1 to 9 or any of claims 10 to 13.

28. A user terminal comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the computer instructions when executed perform the steps of the method for indicating non-orthogonal multiple access characteristic resources according to any one of claims 1 to 9.

29. A base station comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the computer instructions when executed perform the steps of the method for non-orthogonal multiple access characteristic resource indication of any one of claims 10 to 13.