WO2020038194A1

WO2020038194A1 - Demodulation reference signal antenna port mapping method, and terminal device and network device

Info

Publication number: WO2020038194A1
Application number: PCT/CN2019/098221
Authority: WO
Inventors: 孙晓东; 孙鹏; 杨宇; 鲁智
Original assignee: 维沃移动通信有限公司
Priority date: 2018-08-24
Filing date: 2019-07-29
Publication date: 2020-02-27
Also published as: CN110858800A; CN110858800B

Abstract

Provided are a demodulation reference signal antenna port mapping method, a terminal device and a network device, which are related to the technical field of communications, and are used for solving the problem of a low transmission rate caused by a terminal device using a traditional DMRS antenna port mapping method to transmit a PDSCH/PUSCH. The method comprises: receiving downlink control information (DCI) from a network device, wherein the DCI is used for indicating a DMRS antenna port corresponding to each codeword when a terminal device uses dual codewords to transmit a first channel; and the first channel is a physical uplink shared channel (PUSCH) or a physical downlink shared channel (PDSCH); and according to the DCI, determining the DMRS antenna port. The present application is applied to antenna port mapping.

Description

Demodulation reference signal antenna port mapping method, terminal equipment and network equipment

This application claims priority to all Chinese patent applications filed on August 24, 2018 with the State Intellectual Property Office, application number 201810974425.0, and application name "Demodulation Reference Signal Antenna Port Mapping Method, Terminal Equipment, and Network Equipment." The contents are incorporated herein by reference.

Technical field

The present application relates to the field of communication technologies, and in particular, to a demodulation reference signal (Demodulation Reference Signal, DMRS) antenna port mapping method, terminal device, and network device.

Background technique

At present, in a New Radio (NR) mobile communication system, when a terminal device uses a single codeword or a dual codeword to transmit a physical downlink shared channel (PDSCH), a single codeword can map up to 4 positive signals. Cross DMRS antenna ports, dual codewords correspond to 5 to 8 orthogonal DMRS antenna ports; while terminal equipment transmits Physical Uplink Shared Channel (PUSCH), only supports single codeword transmission, dual codewords are not supported Transmission, and a single codeword supports up to 4 orthogonal DMRS antenna ports.

However, when the terminal equipment uses dual codewords to transmit PDSCH, the related technology only specifies the number of DMRS antenna ports mapped by the dual codewords, and the related technology only supports terminal equipment to transmit PUSCH in a single codeword mode, so that PDSCH / The PUSCH transmission is relatively restricted, which in turn leads to a decrease in PDSCH / PUSCH transmission efficiency.

Summary of the Invention

Embodiments of the present invention provide a demodulation reference signal antenna port mapping method, a terminal device, and a network device, which are used to solve the problem of reduced transmission efficiency caused by a terminal device using a traditional DMRS antenna port mapping method to transmit PDSCH / PUSCH.

In order to solve the above technical problems, this application is implemented as follows:

According to a first aspect, an embodiment of the present invention provides a method for mapping a demodulation reference signal antenna port to a terminal device. The method includes:

Receiving downlink control information (DCI) from a network device; wherein the DCI is used to instruct the terminal device to use a DMRS antenna port corresponding to each codeword when the first channel is transmitted using dual codewords; One channel is a physical uplink shared channel PUSCH or a physical downlink shared channel PDSCH;

Determining the DMRS antenna port according to the DCI.

In a second aspect, an embodiment of the present invention provides a method for mapping a demodulation reference signal antenna port, which is applied to a network device. The method includes:

Sending DCI to a terminal device; wherein, when the terminal device uses dual codewords to transmit the first channel, a DMRS antenna port corresponding to each codeword; the first channel is PUSCH or PDSCH; and the terminal device is based on the DCI Determining the DMRS antenna port.

According to a third aspect, an embodiment of the present invention provides a terminal device, including:

A receiving module, configured to receive DCI from a network device; wherein, when the terminal device uses dual codewords to transmit the first channel, a DMRS antenna port corresponding to each codeword; the first channel is PUSCH or PDSCH;

A determining module, configured to determine the DMRS antenna port according to the DCI received by the receiving module.

In a fourth aspect, an embodiment of the present invention provides a network device, including:

A sending module, configured to send DCI to a terminal device; wherein, when the terminal device uses dual codewords to transmit the first channel, a DMRS antenna port corresponding to each codeword; the first channel is PUSCH or PDSCH; and the DCI It is used to instruct the terminal device to determine the DMRS antenna port according to the DCI.

In a fifth aspect, an embodiment of the present invention provides a terminal device including a processor, a memory, and a computer program stored on the memory and executable on the processor, and the computer program is executed by the processor. Steps of implementing the demodulation reference signal antenna port mapping method according to the first aspect.

According to a sixth aspect, an embodiment of the present invention provides a network device, including a processor, a memory, and a computer program stored on the memory and executable on the processor. When the computer program is executed by the processor, The steps of implementing the demodulation reference signal antenna port mapping method according to the second aspect.

In a seventh aspect, an embodiment of the present invention provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the method for implementing the demodulation reference signal antenna port mapping method described above is implemented. step.

In the embodiment of the present invention, the network device instructs the terminal device through DCI to indicate that the terminal device uses a dual codeword to transmit the first channel (that is, PUSCH or PDSCH) corresponding to a DMRS antenna port of each codeword, so that the terminal device can use the DCI directly determines the DMRS antenna port corresponding to each codeword, thereby improving the PDSCH / PUSCH transmission rate and improving communication efficiency and efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments or related technical descriptions will be briefly introduced below. Obviously, the drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without paying creative labor.

FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present invention; FIG.

2 is a schematic flowchart of a method for mapping a demodulation reference signal antenna port according to an embodiment of the present invention;

3 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;

4 is a schematic structural diagram of a network device according to an embodiment of the present invention;

5 is a schematic diagram of a hardware structure of a terminal device according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a hardware structure of a network device according to an embodiment of the present invention.

detailed description

In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

The technical solution provided in this application can be applied to various communication systems, for example, a 5G communication system, a future evolution system, or a variety of communication convergence systems. Can include a variety of application scenarios, such as machine-to-machine (M2M), D2M, macro communication, enhanced mobile Internet (eMBB), ultra-high reliability and ultra-low-latency communication (ultra Reliable & Low Latency (Communication, uRLLC) and Massive Machine Type Communication (mMTC) and other scenarios. These scenarios include, but are not limited to, scenarios such as communication between a terminal device and a terminal device, or communication between a network device and a network device, or communication between a network device and a terminal device. The embodiments of the present invention may be applied to communication with a network device and a terminal device in a 5G communication system, or communication between a terminal device and a terminal device, or communication between a network device and a network device.

FIG. 1 shows a schematic diagram of a possible structure of a communication system according to an embodiment of the present invention. As shown in FIG. 1, the communication system includes at least one network device 100 (only one is shown in FIG. 1) and one or more terminal devices 200 to which each network device 100 is connected.

The network device 100 may be a base station, a core network device, a transmission and reception node (Transmission and Reception Point, TRP), a relay station, or an access point. The network device 100 may be a Global System for Mobile Communication (GSM) or a Code Division Multiple Access (CDMA) network, or a base transceiver station (BTS), or a broadband NB (NodeB) in Wideband Code Division Multiple Access (WCDMA) can also be eNB or eNodeB (evolutional NodeB) in LTE. The network device 100 may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario. The network device 100 may also be a network device in a 5G communication system or a network device in a future evolved network. However, the wording does not constitute a limitation on this application.

The terminal device 200 may be a wireless terminal device or a wired terminal device. The wireless terminal device may be a device that provides voice and / or other business data connectivity to the user, a handheld device with a wireless communication function, a computing device, or a device connected to a wireless device. Other modem processing equipment, vehicle-mounted equipment, wearable equipment, terminal equipment in the future 5G network, or terminal equipment in the future evolved PLMN network, etc. A wireless terminal device can communicate with one or more core networks via a Radio Access Network (RAN). The wireless terminal device can be a mobile terminal device, such as a mobile phone (also called a "cellular" phone) and has mobile The computer of the terminal device, for example, may be a portable, pocket, handheld, computer-built or vehicle-mounted mobile device, which exchanges language and / or data with the wireless access network, and personal communication service (PCS) Phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and other devices. Wireless terminal devices can also be mobile Equipment, user equipment (User Equipment, UE), UE terminal equipment, access terminal equipment, wireless communication equipment, terminal equipment unit, terminal equipment station, mobile station, mobile station, mobile station, remote station ), Remote station, remote terminal equipment (Remote terminal), subscriber unit (Subsc riber unit, subscriber station, user agent, terminal equipment, etc. As an example, in the embodiment of the present invention, FIG. 1 illustrates that the terminal device is a mobile phone.

The term "and / or" in this document is only a kind of association relationship describing related objects, which means that there can be three kinds of relationships, for example, A and / or B can mean: A exists alone, A and B exist simultaneously, and exists alone B these three cases. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship; in the formula, the character "/" indicates that the related objects are a "divide" relationship. If not specified, "a plurality" herein means two or more.

In order to facilitate a clear description of the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, the words "first" and "second" are used to distinguish the same or similar items having substantially the same functions or functions. The skilled person can understand that the words "first" and "second" do not limit the quantity and execution order.

It should be noted that, in the embodiments of the present invention, words such as “exemplary” or “for example” are used as examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present invention should not be construed as more preferred or more advantageous than other embodiments or designs. Rather, the use of the words "exemplary" or "for example" is intended to present the relevant concept in a concrete manner.

FIG. 2 shows a schematic flowchart of a demodulation reference signal antenna port mapping method according to an embodiment of the present invention. As shown in FIG. 2, the demodulation reference signal antenna port mapping method may include:

Step 201: The network device sends a DCI to the terminal device.

Correspondingly, the opposite terminal device receives DCI from the network device.

The network device in the embodiment of the present invention may be a network device in the communication system shown in FIG. 1, for example, a base station; the terminal device in the embodiment of the present invention may be a terminal device in the communication system shown in FIG. 1.

In the embodiment of the present invention, the above-mentioned DCI is used to instruct the terminal device to use a DMRS antenna port corresponding to each codeword when transmitting the first channel by using a double codeword. The first channel is: a physical downlink shared channel (PDSCH) or a physical uplink shared channel (PUSCH).

It should be noted that whether the PDSCH uses single codeword or double codeword transmission is mainly indicated by radio resource control (Radio Resource Control, RRC) signaling.

In the embodiment of the present invention, the above-mentioned DCI is used to indicate at least one of the following information of the DMRS in the first channel: the number of occupied symbols of the pre-DMRS, the number of CDM groups occupied by the dataless DMRS antenna port, and the type of the DMRS. The types of the DMRS mentioned above include a first type and a second type.

Optionally, in the embodiment of the present invention, the above-mentioned DCI format of the DCI includes at least one antenna port domain, and each antenna port domain includes at least one antenna port domain value, and one antenna port domain value is used to indicate that the terminal device is in A DMRS antenna port corresponding to each codeword when the first channel is transmitted at least once using dual codewords.

Step 202: The terminal device determines a DMRS antenna port according to the DCI.

Optionally, in the embodiment of the present invention, when the above-mentioned first channel is a PUSCH, the DCI is used to indicate whether the terminal device repeatedly sends the PUSCH; or, when the above-mentioned first channel is a PDSCH, The DCI is used to indicate whether the terminal device receives the PDSCH in combination.

Optionally, in the embodiment of the present invention, the above-mentioned DCI is used to instruct the terminal device that when a dual codeword is used to transmit the first channel, each codeword corresponds to the same DMRS antenna port. Exemplarily, in the case that the first channel is PUSCH, the DCI is used to instruct the terminal device to use the same DMRS antenna port corresponding to each codeword when the PUSCH is repeatedly transmitted using dual codewords; or, When one channel is a PDSCH, the above-mentioned DCI is used to instruct the terminal device to use the same DMRS antenna port corresponding to each codeword when dual codewords are combined to receive the PDSCH.

For example, when the network device instructs the terminal device to transmit the first channel by dual codewords through DCI, when the DMRS antenna port corresponding to each codeword is the same, the corresponding DMRS port mapping table can be shown in Table 1 below.

Table 1

As can be seen from Table 1, the DMRS antenna ports corresponding to the first codeword and the second codeword are the same. Based on this Table 1, the terminal device may receive the PDSCH in a single codeword combination according to the instructions of the DCI.

Optionally, in the embodiment of the present invention, before step 202 described above, the method further includes the following steps:

Step 202a: The network device generates DCI according to a predetermined rule and the first information.

In the embodiment of the present invention, the above-mentioned first information includes at least one of the following: the number of occupied symbols of the front DMRS, the number of CDM groups occupied by the dataless DMRS antenna port, and the type of the DMRS.

In the embodiment of the present invention, the above-mentioned DCI is used to indicate at least one of the following information of the DMRS in the first channel: the number of occupied symbols of the pre-DMRS, the number of CDM groups occupied by the dataless DMRS antenna port, and the type of the DMRS.

Based on the above step 202a, the above step 202 specifically includes the following steps:

Step 202b: the terminal device determines a DMRS antenna port according to the DCI and a predetermined rule;

Wherein, the above-mentioned predetermined rule is configured by the network device for the terminal device, or is predefined (for example, prescribed by a protocol). The foregoing predetermined rule is used to reflect the association relationship between the DMRS antenna port and the codeword.

Further optionally, in the embodiment of the present invention, the above step 202b specifically includes:

Step 202b1: The terminal device determines a DMRS antenna port according to an antenna port domain value and a predetermined rule in the DCI.

In the embodiment of the present invention, the foregoing predetermined rule includes: a correspondence between an antenna port domain value and a DMRS antenna port, wherein one antenna port domain value corresponds to at least one group of DMRS antenna ports.

And / or, in the embodiment of the present invention, the foregoing predetermined rule includes: information of the DMRS in the first channel indicated by the antenna port domain value (that is, the number of occupied symbols of the pre-DMRS, the number of occupied DMRS antenna ports without data Correspondence between the number of CDM groups and the type of DMRS) and the DMRS antenna port.

Optionally, in the embodiment of the present invention, the foregoing predetermined rule includes:

In the case where the total number of DMRS antenna ports corresponding to the above dual codeword is equal to 2, the first codeword corresponds to the first DMRS antenna port, and the second codeword corresponds to the second DMRS antenna port;

In the case where the total number of DMRS antenna ports corresponding to the above dual codeword is equal to 3, the first codeword corresponds to the third DMRS antenna port, and the second codeword corresponds to the fourth DMRS antenna port;

In the case where the total number of DMRS antenna ports corresponding to the above dual codeword is equal to 4, the first codeword corresponds to the fifth DMRS antenna port, and the second codeword corresponds to the sixth DMRS antenna port;

In the case where the total number of DMRS antenna ports corresponding to the above two codewords is equal to 5, the first codeword corresponds to a seventh DMRS antenna port, and the second codeword corresponds to an eighth DMRS antenna port;

In the case where the total number of DMRS antenna ports corresponding to the above dual codeword is equal to 6, the first codeword corresponds to the ninth DMRS antenna port, and the second codeword corresponds to the tenth DMRS antenna port;

In the case where the total number of DMRS antenna ports corresponding to the above dual codeword is equal to 7, the first codeword corresponds to the eleventh DMRS antenna port, and the second codeword corresponds to the twelfth DMRS antenna port;

In the case where the total number of DMRS antenna ports corresponding to the above dual codeword is equal to 8, the first codeword corresponds to the thirteenth DMRS antenna port, and the second codeword corresponds to the fourteenth DMRS antenna port.

Further optionally, in the embodiment of the present invention, when the DMRS is different, the foregoing first DMRS antenna port and the second DMRS antenna port are different. For details, refer to the following examples:

Example 1:

For the case where the total number of DMRS antenna ports corresponding to the above dual codeword is equal to 2:

When the number of the CDM groups is 1, the port identifier of the first DMRS antenna port is: 0, and the port identifier of the second DMRS antenna port is: 1;

If the type of the DMRS is the first type and the maximum number of symbols of the DMRS is 2, when the number of the CDM groups is 2, the port identifier of the first DMRS antenna port is: 0, and the port identifier of the second DMRS antenna port Is: 2;

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 1 or 2, when the number of the CDM groups is 1, the port identifier of the first DMRS antenna port is: 0, and the number of the second DMRS antenna port is The port identification is: 1; when the number of the CDM groups is 2 or 3, the port identification of the first DMRS antenna port is: 0, and the port identification of the second DMRS antenna port is at least one of the following: 2, or, 4 Or, the port identifier of the first DMRS antenna port is: 2, and the port identifier of the second DMRS antenna port is: 4.

Example 2:

For the case where the total number of DMRS antenna ports corresponding to the above dual codeword is equal to 3:

If the type of the DMRS is the first type and the maximum number of symbols of the DMRS is 2, when the number of the CDM groups is 1, the port identifier of the third DMRS antenna port is: 0, and the port identifier of the fourth DMRS antenna port Is: 4 and 5; or, the port identifier of the third DMRS antenna port is: 0 and 1, and the port identifier of the fourth DMRS antenna port is: 4: when the number of the CDM group is 2, the third DMRS antenna The port identification of the port is: 0, the port identification of the fourth DMRS antenna port is: 2 and 3; or, the port identification of the third DMRS antenna port is: 0 and 1, and the port identification of the fourth DMRS antenna port is: 2;

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 1 or 2, when the number of the CDM groups is 1, the port identifier of the third DMRS antenna port is: 0, and the number of the fourth DMRS antenna port is The port identifiers are: 6 and 7; or, the port identifiers of the third DMRS antenna port are: 0 and 1, and the port identifiers of the fourth DMRS antenna port are: 6; when the number of the CDM groups is 2 or 3, the above The port identifier of the third DMRS antenna port is: 0, and the port identifier of the fourth DMRS antenna port is: 2 and 3; or, the port identifier of the third DMRS antenna port is: 0 and 1, the port identifier of the fourth DMRS antenna port is: The port identifier is: 2; when the number of CDM groups is 3, the port identifier of the third DMRS antenna port is: 0, and the port identifier of the fourth DMRS antenna port is: 2 and 4; or, the third DMRS antenna The port identifiers of the ports are: 0 and 2, and the port identifiers of the fourth DMRS antenna port are: 4.

Example 3:

For the case where the total number of DMRS antenna ports corresponding to the above dual codeword is equal to 4:

If the type of the DMRS is the first type and the maximum number of symbols of the DMRS is 2, when the number of the CDM groups is 1, the port identifiers of the fifth DMRS antenna port are: 0 and 1, and the number of the sixth DMRS antenna port is The port identifiers are: 4 and 5; when the number of CDM groups is 2, the port identifier of the fifth DMRS antenna port is: 0, and the port identifier of the sixth DMRS antenna port are: 2, 3, and 6; or, the above The port identifiers of the fifth DMRS antenna port are: 0 and 1, and the port identifiers of the sixth DMRS antenna port are: 2 and 3; or, the port identifiers of the fifth DMRS antenna port are: 0, 1, and 4, the first The port identification of the six DMRS antenna ports is: 2;

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 1 or 2, when the number of the CDM groups is 1, the port identifiers of the fifth DMRS antenna port are: 0 and 1, and the sixth DMRS antenna The port identifiers of the ports are: 6 and 7; when the number of CDM groups is 2 or 3, the port identifiers of the fifth DMRS antenna port are: 0, and the port identifiers of the sixth DMRS antenna port are: 2, 3, and 8 Or, the port identifier of the fifth DMRS antenna port is: 0 and 1, and the port identifier of the sixth DMRS antenna port is at least one of the following: 2 and 3, or, 4 and 5; or, the fifth DMRS antenna The port identifiers of the ports are: 2 and 3, and the port identifiers of the sixth DMRS antenna port are: 4 and 5; or, the port identifiers of the fifth DMRS antenna port are: 0, 1, and 6, and the sixth DMRS antenna port When the number of the CDM group is 3, the port identifier of the fifth DMRS antenna port is: 0, and the port identifier of the sixth DMRS antenna port is: 2, 4, and 5; or, the first The port IDs of the five DMRS antenna ports are: 0 and 1, the above-mentioned sixth DMRS day Identifying the port as port: 2 and 4; or DMRS port identifier of the fifth antenna port is: 0, 1 and 2, the sixth port identification DMRS antenna port: 4.

Example 4:

For the case where the total number of DMRS antenna ports corresponding to the above dual codeword is equal to 5:

If the type of the DMRS is the first type and the maximum number of symbols of the DMRS is 2, when the number of the CDM groups is 2, the port identifier of the seventh DMRS antenna port is: 0, and the port identifier of the eighth DMRS antenna port Are: 2, 3, 6 and 7; or, the port identifiers of the seventh DMRS antenna port are: 0 and 1, and the port identifiers of the eighth DMRS antenna port are: 2, 3, and 6; or, the seventh DMRS The port identifiers of the antenna ports are: 0, 1, and 4, and the port identifiers of the eighth DMRS antenna port are: 2 and 3; or, the port identifiers of the seventh DMRS antenna port are: 0, 1, 4, and 5, the above The port identifier of the eighth DMRS antenna port is: 2;

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 1 or 2, when the number of the CDM groups is 2 or 3, the port identifier of the seventh DMRS antenna port is: 0, and the eighth DMRS antenna is The port identifiers of the ports are: 2, 3, 8 and 9; or, the port identifiers of the seventh DMRS antenna port are: 0 and 1, and the port identifiers of the eighth DMRS antenna port are: 2, 3, and 8; or, The port identifiers of the seventh DMRS antenna port are: 0, 1, and 6, and the port identifiers of the eighth DMRS antenna port are: 2 and 3; or, the port identifiers of the seventh DMRS antenna port are: 0, 1, 6 And 7, the port identifier of the eighth DMRS antenna port is: 2; when the number of the CDM groups is three, the port identifier of the seventh DMRS antenna port is: 0, and the port identifier of the eighth DMRS antenna port is: 2 , 3, 4 and 5; or, the port identifiers of the seventh DMRS antenna port are: 0 and 1, and the port identifiers of the eighth DMRS antenna port are: 2, 3, and 4; The port identifiers are: 0 and 2. The port identifier of the eighth DMRS antenna port is 4, 5, and 10; or, the port identifier of the seventh DMRS antenna port is: 0, 1, and 2, and the port identifier of the eighth DMRS antenna port is: 4 and 5; or, the port identifier of the seventh DMRS antenna port Are: 0, 1, and 6, the port identifiers of the eighth DMRS antenna port are: 2 and 4; or, the port identifiers of the seventh DMRS antenna port are: 0, 1, 2, and 3, and the ports of the eighth DMRS antenna port Identified as: 4.

Example 5:

For the case where the total number of DMRS antenna ports corresponding to the above dual codeword is equal to 6:

If the type of the DMRS is the first type and the maximum number of symbols of the DMRS is 2, when the number of the CDM groups is 2, the port identifiers of the ninth DMRS antenna port are: 0 and 1, and the number of the tenth DMRS antenna port is The port identifiers are: 2, 3, 6 and 7; or, the port identifiers of the ninth DMRS antenna port are: 0, 1, and 4, and the port identifiers of the tenth DMRS antenna port are: 2, 6, and 7; or, The port identifiers of the ninth DMRS antenna port are: 0, 1, 4, and 5, and the port identifiers of the tenth DMRS antenna port are: 2 and 3;

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 1 or 2, when the number of the CDM groups is 2 or 3, the port identifiers of the ninth DMRS antenna ports are: 0 and 1, and the tenth The port identifiers of the DMRS antenna ports are: 2, 3, 8 and 9; or, the port identifiers of the ninth DMRS antenna port are: 0, 1, and 6, and the port identifiers of the tenth DMRS antenna port are: 2, 8, and 9; or, the port identifier of the ninth DMRS antenna port is: 0, 1, 6, and 7, and the port identifier of the tenth DMRS antenna port is: 2 and 3; when the number of the CDM group is 3, the ninth The port identifiers of the DMRS antenna ports are: 0 and 1, and the port identifiers of the tenth DMRS antenna port are: 2, 3, 4, and 5; or, the port identifiers of the ninth DMRS antenna port are: 0, 1, 2, and 3. The port identifiers of the tenth DMRS antenna port are: 4 and 5.

Example 6:

For the case where the total number of DMRS antenna ports corresponding to the above dual codeword is equal to 7:

If the type of the DMRS is the first type and the maximum number of symbols of the DMRS is 2, when the number of the CDM groups is 2, the port identifiers of the eleventh DMRS antenna ports are: 0, 1, and 4, and the twelfth The port identifiers of the DMRS antenna ports are: 2, 3, 6, and 7; or, the port identifiers of the eleventh DMRS antenna ports are: 0, 1, 4, and 5, and the port identifiers of the twelfth DMRS antenna port are: 2, 3 and 6;

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 2, when the number of the CDM groups is 2 or 3, the port identifiers of the eleventh DMRS antenna ports are: 0, 1, and 6, tenth The port identifiers of the two DMRS antenna ports are: 2, 3, 8 and 9; or, the port identifiers of the eleventh DMRS antenna port are: 0, 1, 6, and 7, and the port identifiers of the twelfth DMRS antenna port are: : 2, 3, and 8; when the number of the CDM groups is 3, the port identifiers of the eleventh DMRS antenna ports are: 0, 1, and 6, and the port identifiers of the twelfth DMRS antenna port are: 2, 3, 4 and 5; or, the port identifiers of the eleventh DMRS antenna port are: 0, 1, 2, and 3, and the port identifiers of the twelfth DMRS antenna port are: 4, 5, and 10.

Example 7:

For the case where the total number of DMRS antenna ports corresponding to the above dual codeword is equal to 8:

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 2, when the number of the CDM groups is 2 or 3, the port identifiers of the thirteenth DMRS antenna ports are: 0, 1, 6, and 7, The port identification of the fourteenth DMRS antenna port is at least one of the following: 2, 3, 8, and 9, or 4, 5, 10, and 11; or, the port identification of the thirteenth DMRS antenna port is: 2, 3, 8 and 9, the port identifier of the fourteenth DMRS antenna port is: 4, 5, 10, and 11; when the number of the CDM groups is three, the port identifier of the thirteenth DMRS antenna port is: 0, 1 , 6, and 7, the port identifiers of the fourteenth DMRS antenna port are: 2, 3, 4, and 5.

By way of example, taking the above dual codewords including the first codeword and the second codeword as an example, the above mapping rules will be described by using three DMRS antenna port mapping tables as an example.

The following Table 2 is: in a case where the type of the DMRS is the first type and the maximum number of symbols of the DMRS is 2, the corresponding DMRS antenna port mapping table.

Table 2

Exemplarily, the network device configures the PDSCH for dual codeword transmission through RRC signaling. Table 2 above is used as an example. When the antenna port domain value in DCI is X8, X8 is used as an index. From Table 2, the PDSCH number is determined. One codeword is received using DMRS antenna port 0, and the second codeword is received using DMRS antenna port 2, DMRS antenna port 3, and DMRS antenna port 6. Then, the terminal equipment demodulates the corresponding codeword according to these DMRS antenna ports.

Exemplarily, for the above-mentioned X1 to X7 and X9, since the corresponding number of DMRS symbols is 1 or 2, the domain value of any antenna port in the above-mentioned X1 to X7 and X9 may be a domain value set, and It is not configured with the corresponding child mapping table.

For example, taking X1 as an example, X1 = {1, 2}, the sub-mapping table corresponding to X1 is shown in Table 3 below:

table 3

Exemplarily, when the antenna port field value in the DCI is 1, the first codeword corresponds to DMRS antenna port 0, the second codeword corresponds to DMRS antenna port 1, and the number of DMRS symbols is 1.

In the same way, corresponding sub-mapping tables can be allocated for X2 to X7 and X9. For specific examples, refer to Table 3 described above, which will not be repeated here.

It should be noted that, in the embodiment of the present invention, the above-mentioned X1 to X7 and X9 corresponding sub-mapping tables can also be merged into Table 2.

The following Table 4 is: when the type of the DMRS is the second type and the number of symbols of the DMRS is 1, the corresponding DMRS antenna port mapping table.

Table 4

Exemplarily, the network device configures the PDSCH to be transmitted using dual codes through RRC signaling. Table 4 above is used as an example. When the antenna port domain value in DCI is X1, X1 is used as an index. From Table 4, the PDSCH number is determined. One codeword is received using DMRS antenna port 1, and the second codeword is received using DMRS antenna port 0. Then, the terminal equipment demodulates the corresponding codeword according to these DMRS antenna ports.

Exemplarily, for the above-mentioned X5 to X9, X12 to X16, X20 to X23, X30 to X32, since the corresponding number of CDM groups is 2 or 3, therefore, the above X5 to X9, X12 to X16, X20 to X23 The domain value of any antenna port in X30 to X32 can be a domain value set, and a corresponding sub-mapping table is configured for it, so that the terminal device can accurately determine the number of DMRS CDM groups.

For example, taking X5 as an example, the X5 = {a, b}, and the sub-mapping table corresponding to the X1 is shown in Table 5 below:

table 5

Exemplarily, when the antenna port domain value in DCI is a, the first codeword corresponds to DMRS antenna port 0, the second codeword corresponds to DMRS antenna port 2, and the number of CDM groups is 1.

Similarly, you can assign corresponding sub-mapping tables to X6 to X9, X12 to X16, X20 to X23, and X30 to X32. For specific examples, refer to Table 5 above.

It should be noted that, in the embodiment of the present invention, the foregoing sub mapping tables corresponding to X5 to X9, X12 to X16, X20 to X23, and X30 to X32 can also be merged into Table 4.

The following Table 6 is: when the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 2, the corresponding DMRS antenna port mapping table.

Table 6

Exemplarily, the network device configures the PDSCH for dual codeword transmission through RRC signaling. Table 6 above is used as an example. When the antenna port domain value in DCI is X24, X24 is used as an index. From Table 4, the PDSCH number is determined. One codeword is received using DMRS antenna port 0, DMRS antenna port 1 and DMRS antenna port 6, and the second codeword is received using DMRS antenna port 2 and DMRS antenna port 4. Then, the terminal equipment demodulates the corresponding codeword according to these DMRS antenna ports.

Exemplarily, for the above-mentioned X1, X5 to X11, X13 to X15, X17 to X19, X26 to X29, X33, X34, because the corresponding number of CDM groups is 2 or 3, and / or, the number of DMRS symbols is 1 Or 2, therefore, any of the antenna port domain values of X1, X5 to X11, X13 to X15, X17 to X19, X26 to X29, X33, and X34 can be a set of domain values, and configure corresponding sub-ports for them. The mapping table enables the terminal device to accurately determine the number of CDM groups and symbols of the DMRS.

For example, taking X5 as an example, the X5 = {1, 2, 3, 4}, and the sub-mapping table corresponding to the X5 is shown in Table 7 below:

Table 7

Exemplarily, when the antenna port field value in DCI is 1, the first codeword corresponds to DMRS antenna port 0, the second codeword corresponds to DMRS antenna port 2, the number of CDM groups is 2, and the number of DMRS symbols is 1.

Similarly, X1, X6 to X11, X13 to X15, X17 to X19, X26 to X29, X33, and X34 can be assigned corresponding sub-mapping tables. For specific examples, refer to Table 7 above, and details are not described here.

It should be noted that, in the embodiment of the present invention, the corresponding sub-mapping tables of X1, X5 to X11, X13 to X15, X17 to X19, X26 to X29, X33, and X34 may also be merged into Table 6.

It should be noted that the antenna port domain values in the above Tables 1 to 7 are only examples, and in actual applications, other symbols (for example, any one of numbers, English letters, symbols, and characters) can also be used. Or a combination symbol formed by combining at least two of numbers, English letters, symbols, and characters), which is not limited in the embodiment of the present invention.

In the demodulation reference signal antenna port mapping method provided by the embodiment of the present invention, a network device instructs a terminal device through DCI to indicate that the terminal device uses dual codewords to transmit the first channel (that is, PUSCH or PDSCH) corresponding to each DMRS antenna port. Therefore, the terminal device can directly determine the DMRS antenna port corresponding to each codeword based on the DCI, thereby improving the PDSCH / PUSCH transmission rate, and improving communication efficiency and efficiency.

As shown in FIG. 3, an embodiment of the present invention provides a terminal device 300. The terminal device 300 includes a receiving module 301 and a determining module 302, where:

The receiving module 301 is configured to receive downlink control information DCI from a network device. The DCI is used to instruct the terminal device 300 to use a dual codeword to transmit a DMRS antenna port corresponding to each codeword. The first channel is PUSCH or PDSCH.

The determining module 302 is configured to determine a DMRS antenna port according to the DCI received by the receiving module 301.

Optionally, when the first channel is a PUSCH, the DCI is used to indicate whether the terminal device 300 repeatedly sends a PUSCH; or, when the first channel is a PDSCH, the DCI is used to indicate whether the terminal device 300 is Receive PDSCH in combination.

Optionally, the above-mentioned DCI is used to instruct the terminal device 300 to use the dual codewords to transmit the first channel with the same DMRS antenna port corresponding to each codeword.

Optionally, the antenna port domain in the above DCI includes at least one antenna port domain value, and one antenna port domain value is used to instruct the terminal device 300 to use a dual codeword to transmit a DMRS antenna corresponding to each codeword at least once on a first channel port.

Optionally, the foregoing determining module 302 is specifically configured to determine the DMRS antenna port according to the DCI and a predetermined rule; wherein the foregoing predetermined rule is configured by the network device for the terminal device, or is predefined.

Optionally, the above DCI is used to indicate at least one of the following information of the DMRS in the first channel: the number of symbols occupied by the front DMRS, the number of CDM groups occupied by the dataless DMRS antenna port, and the type of the DMRS;

The above predetermined rule includes: when the total number of DMRS antenna ports corresponding to the dual codeword is equal to 2, the first codeword corresponds to the first DMRS antenna port, and the second codeword corresponds to the second DMRS antenna port;

When the total number of DMRS antenna ports corresponding to the double codeword is equal to 3, the first codeword corresponds to the third DMRS antenna port, and the second codeword corresponds to the fourth DMRS antenna port;

When the total number of DMRS antenna ports corresponding to the double codeword is equal to 4, the first codeword corresponds to the fifth DMRS antenna port, and the second codeword corresponds to the sixth DMRS antenna port;

When the total number of DMRS antenna ports corresponding to the double codeword is equal to 5, the first codeword corresponds to the seventh DMRS antenna port, and the second codeword corresponds to the eighth DMRS antenna port;

In the case where the total number of DMRS antenna ports corresponding to the double codeword is equal to 6, the first codeword corresponds to the ninth DMRS antenna port, and the second codeword corresponds to the tenth DMRS antenna port;

In the case where the total number of DMRS antenna ports corresponding to the double codeword is equal to 7, the first codeword corresponds to the eleventh DMRS antenna port, and the second codeword corresponds to the twelfth DMRS antenna port;

In the case where the total number of DMRS antenna ports corresponding to the double codeword is equal to 8, the first codeword corresponds to the thirteenth DMRS antenna port, and the second codeword corresponds to the fourteenth DMRS antenna port.

Further optionally, when the number of the CDM group is 1, the port identifier of the first DMRS antenna port is: 0, and the port identifier of the second DMRS antenna port is: 1;

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 1 or 2, when the number of the CDM groups is 2 or 3, the port identifier of the first DMRS antenna port is: 0, and the number of the second DMRS antenna port is The port identifier is at least one of the following: 2, or, 4; or, the port identifier of the first DMRS antenna port is: 2, and the port identifier of the second DMRS antenna port is: 4.

Further optionally, if the type of the DMRS is the first type and the maximum number of symbols of the DMRS is 2, when the number of the CDM groups is 1, the port identifier of the third DMRS antenna port is: 0, and the fourth DMRS antenna port The port ID of the third DMRS antenna port is: 4 and 5; or, the port ID of the third DMRS antenna port is: 0 and 1, and the port ID of the fourth DMRS antenna port is: 4; when the above-mentioned number of CDM groups is 2, the third DMRS antenna The port identification of the port is: 0, the port identification of the fourth DMRS antenna port is: 2 and 3; or, the port identification of the third DMRS antenna port is: 0 and 1, and the port identification of the fourth DMRS antenna port is 2;

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 1 or 2, when the number of the CDM groups is 1, the port identifier of the third DMRS antenna port is: 0, and the port identifier of the fourth DMRS antenna port Are: 6 and 7; or, the port identification of the third DMRS antenna port is: 0 and 1, and the port identification of the fourth DMRS antenna port is: 6; when the number of the above-mentioned CDM groups is 2 or 3, the third DMRS antenna port The port ID of the port is: 0, the port ID of the fourth DMRS antenna port: 2 and 3; or, the port ID of the third DMRS antenna port is: 0 and 1, and the port ID of the fourth DMRS antenna port is: 2; When the number of CDM groups is 3, the port identification of the third DMRS antenna port is: 0, and the port identification of the fourth DMRS antenna port is: 2 and 4; or, the port identification of the third DMRS antenna port is: 0 and 2, the The port identification of the four DMRS antenna ports is: 4.

Further optionally, if the type of the DMRS is the first type and the maximum number of symbols of the DMRS is 2, when the number of the CDM groups is 1, the port identifier of the fifth DMRS antenna port is: 0 and 1, and the sixth DMRS The port identifiers of the antenna ports are: 4 and 5; when the number of CDM groups is 2, the port identifier of the fifth DMRS antenna port is: 0, and the port identifier of the sixth DMRS antenna port is: 2, 3, and 6; or, The port identities of the fifth DMRS antenna port are: 0 and 1, and the port identities of the sixth DMRS antenna port are: 2 and 3; or, the port identities of the fifth DMRS antenna port are: 0, 1, and 4, and the sixth DMRS antenna The port identifier of the port is: 2;

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 1 or 2, when the number of the CDM groups is 1, the port identifiers of the fifth DMRS antenna port are: 0 and 1, and the number of the sixth DMRS antenna port is The port identifiers are: 6 and 7; when the number of CDM groups is 2 or 3, the port identifier of the fifth DMRS antenna port is: 0, and the port identifier of the sixth DMRS antenna port is: 2, 3, and 8; The port identification of the five DMRS antenna ports is: 0 and 1, and the port identification of the sixth DMRS antenna port is at least one of the following: 2 and 3, or, 4 and 5; or, the port identification of the fifth DMRS antenna port is: 2 And 3, the port identification of the sixth DMRS antenna port is: 4 and 5; or, the port identification of the fifth DMRS antenna port is: 0, 1, and 6, and the port identification of the sixth DMRS antenna port is: 2; in the above CDM When the number of groups is 3, the port identification of the fifth DMRS antenna port is: 0, and the port identification of the sixth DMRS antenna port is: 2, 4, and 5; or, the port identification of the fifth DMRS antenna port is: 0 and 1, The port identifiers of the sixth DMRS antenna port are: 2 and 4; or, the port identifiers of the fifth DMRS antenna port : 0, 1 and 2, a sixth port identification DMRS antenna port: 4.

Further optionally, if the type of the DMRS is the first type and the maximum number of symbols of the DMRS is 2, when the number of the CDM groups is 2, the port identifier of the seventh DMRS antenna port is: 0, and the eighth DMRS antenna port The port identifiers are: 2, 3, 6 and 7; or, the port identifiers of the seventh DMRS antenna port are: 0 and 1, and the port identifiers of the eighth DMRS antenna port are: 2, 3, and 6; or, the seventh DMRS The port identification of the antenna port is: 0, 1, and 4, and the port identification of the eighth DMRS antenna port is: 2 and 3; or, the port identification of the seventh DMRS antenna port is: 0, 1, 4, and 5, and the eighth DMRS The port identification of the antenna port is: 2;

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 1 or 2, when the number of the CDM groups is 2 or 3, the port identifier of the seventh DMRS antenna port is: 0, and the number of the eighth DMRS antenna port is The port identifiers are: 2, 3, 8 and 9; or, the port identifiers of the seventh DMRS antenna port are: 0 and 1, and the port identifiers of the eighth DMRS antenna port are: 2, 3, and 8; or, the seventh DMRS antenna The port identifiers of the ports are: 0, 1, and 6, and the port identifiers of the eighth DMRS antenna port are: 2 and 3; or, the port identifiers of the seventh DMRS antenna port are: 0, 1, 6, and 7, and the eighth DMRS antenna The port identifier of the port is: 2; when the number of CDM groups is 3, the port identifier of the seventh DMRS antenna port is: 0, and the port identifier of the eighth DMRS antenna port is: 2, 3, 4, and 5; The port identifiers of the seven DMRS antenna ports are: 0 and 1, and the port identifiers of the eighth DMRS antenna port are: 2, 3, and 4; or, the port identifiers of the seventh DMRS antenna port are: 0 and 2, and the eighth DMRS antenna port. The port identifiers are: 4, 5, and 10; or, the port identifiers of the seventh DMRS antenna port are: 0, 1, and 2, and the eighth The port identifiers of the DMRS antenna ports are: 4 and 5; or, the port identifiers of the seventh DMRS antenna port are: 0, 1, and 6, and the port identifiers of the eighth DMRS antenna port are: 2 and 4; or, the seventh DMRS antenna The port identification of the port is: 0, 1, 2 and 3, and the port identification of the eighth DMRS antenna port is: 4.

Further optionally, if the type of the DMRS is the first type and the maximum number of symbols of the DMRS is 2, when the number of the CDM groups is 2, the port identifier of the ninth DMRS antenna port is: 0 and 1, the tenth DMRS The port identifiers of the antenna ports are: 2, 3, 6, and 7; or, the port identifiers of the ninth DMRS antenna port are: 0, 1, and 4, and the port identifiers of the tenth DMRS antenna port are: 2, 6, and 7; or , The port identifiers of the ninth DMRS antenna port are: 0, 1, 4, and 5, and the port identifiers of the tenth DMRS antenna port are: 2 and 3;

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 1 or 2, when the number of the CDM groups is 2 or 3, the port identifier of the ninth DMRS antenna port is: 0 and 1, the tenth DMRS antenna The port identifiers of the ports are: 2, 3, 8 and 9; or, the port identifiers of the ninth DMRS antenna port are: 0, 1 and 6, and the port identifiers of the tenth DMRS antenna port are: 2, 8 and 9; or, The port identification of the ninth DMRS antenna port is: 0, 1, 6, and 7, and the port identification of the tenth DMRS antenna port is: 2 and 3. When the number of the above-mentioned CDM groups is three, the port identification of the ninth DMRS antenna port is: : 0 and 1, the port identification of the tenth DMRS antenna port is: 2, 3, 4 and 5; or, the port identification of the ninth DMRS antenna port is: 0, 1, 2, and 3, the port of the tenth DMRS antenna port Identified as: 4 and 5.

Further optionally, if the type of the DMRS is the first type and the maximum number of symbols of the DMRS is 2, when the number of the CDM groups is 2, the port identifier of the eleventh DMRS antenna port is: 0, 1, and 4, The port identification of the twelfth DMRS antenna port is: 2, 3, 6 and 7; or, the port identification of the eleventh DMRS antenna port is: 0, 1, 4, and 5, and the port identification of the twelfth DMRS antenna port is: : 2, 3, and 6;

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 2, when the number of the CDM groups is 2 or 3, the port identifiers of the eleventh DMRS antenna ports are: 0, 1, and 6, and the twelfth The port identification of the DMRS antenna port is: 2, 3, 8 and 9; or, the port identification of the eleventh DMRS antenna port is: 0, 1, 6, and 7, and the port identification of the twelfth DMRS antenna port is: 2, 3 and 8; when the number of the above-mentioned CDM groups is 3, the port identifiers of the eleventh DMRS antenna port are: 0, 1, and 6, and the port identifiers of the twelfth DMRS antenna port are: 2, 3, 4, and 5; or The port identifiers of the eleventh DMRS antenna port are: 0, 1, 2, and 3, and the port identifiers of the twelfth DMRS antenna port are: 4, 5, and 10.

Further optionally, if the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 2, when the number of the CDM groups is 2 or 3, the port identifier of the thirteenth DMRS antenna port is: 0, 1, 6 and 7, the port identification of the fourteenth DMRS antenna port is at least one of the following: 2, 3, 8 and 9, or 4, 5, 10, and 11; or, the port identification of the thirteenth DMRS antenna port is: 2, 3, 8 and 9, the port identification of the fourteenth DMRS antenna port is: 4, 5, 10, and 11; when the number of the above-mentioned CDM groups is 3, the port identification of the thirteenth DMRS antenna port is: 0, 1 , 6, and 7, the port identifiers of the fourteenth DMRS antenna port are: 2, 3, 4, and 5.

A terminal device provided by an embodiment of the present invention. The terminal device receives DCI sent by a network device, and according to the DCI, the terminal device uses a dual codeword to transmit a first channel (that is, PUSCH or PDSCH) corresponding to a DMRS antenna. Port, so that the terminal device can directly determine the DMRS antenna port corresponding to each codeword based on the DCI, thereby improving the PDSCH / PUSCH transmission rate, and improving communication efficiency and efficiency.

The terminal device provided in the embodiment of the present invention can implement the process shown in the foregoing method embodiment. To avoid repetition, details are not described herein again.

As shown in FIG. 4, a network device according to an embodiment of the present invention. The network device 400 includes: a sending module 401, where:

The sending module 401 is configured to send DCI to a terminal device. The DCI is used to instruct the terminal device to use a dual codeword to transmit a DMRS antenna port corresponding to each codeword. The first channel is PUSCH or PDSCH. DCI is used to instruct a terminal device to determine the DMRS antenna port according to the DCI.

Optionally, as shown in FIG. 4, the network device further includes: a generating module 402, where:

The generating module 402 is configured to generate a DCI according to a predetermined rule and first information.

The first information mentioned above includes at least one of the following: the number of occupied symbols of the front DMRS, the number of CDM groups occupied by the dataless DMRS antenna port, and the type of the DMRS; the above predetermined rule is configured by the network device 400 for the terminal device , Or, is predefined.

Optionally, the foregoing predetermined rule includes: when the total number of DMRS antenna ports corresponding to the dual codeword is equal to 2, the first codeword corresponds to the first DMRS antenna port, and the second codeword corresponds to the second DMRS antenna port;

The network equipment device provided in the embodiment of the present invention instructs the terminal device through DCI to the terminal device when the terminal device uses dual codewords to transmit the first channel (that is, PUSCH or PDSCH) corresponding to the DMRS antenna port of each codeword, so that the terminal The device can directly determine the DMRS antenna port corresponding to each codeword based on the DCI, thereby improving the PDSCH / PUSCH transmission rate, and improving communication efficiency and efficiency.

The network device provided by the embodiment of the present invention can implement the process shown in the foregoing method embodiment. To avoid repetition, details are not described herein again.

FIG. 5 is a schematic diagram of a hardware structure of a terminal device that implements various embodiments of the present invention. The terminal device 100 includes, but is not limited to, a radio frequency unit 101, a network module 102, an audio output unit 103, an input unit 104, a sensor 105, and a display unit. 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, and a power supply 111. Those skilled in the art can understand that the structure of the terminal device 100 shown in FIG. 5 does not constitute a limitation on the terminal device. The terminal device 100 may include more or fewer components than shown in the figure, or combine some components, or Different component arrangements. In the embodiment of the present invention, the terminal device 100 includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a vehicle-mounted terminal device, a wearable device, and a pedometer.

The radio frequency unit 101 is configured to receive DCI from a network device. The DCI mentioned above is used to instruct the terminal device to use a DMRS antenna port corresponding to each codeword when the first channel is transmitted using dual codewords. The first channel is PUSCH or PDSCH; a processor 110, configured to determine a DMRS antenna port according to the DCI received by the radio frequency unit 101.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 101 may be used to receive and send signals during the transmission and reception of information or during a call. Specifically, the downlink data from the base station is received and processed by the processor 110; The uplink data is sent to the base station. Generally, the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with a network and other devices through a wireless communication system.

The terminal device 100 provides users with wireless broadband Internet access through the network module 102, such as helping users to send and receive email, browse web pages, and access streaming media.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the network module 102 or stored in the memory 109 into audio signals and output them as sound. Moreover, the audio output unit 103 may also provide audio output (for example, a call signal receiving sound, a message receiving sound, etc.) related to a specific function performed by the terminal device 100. The audio output unit 103 includes a speaker, a buzzer, a receiver, and the like.

The input unit 104 is used for receiving audio or video signals. The input unit 104 may include a graphics processing unit (GPU) 1041 and a microphone 1042. The graphics processor 1041 pairs images of still pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. Data is processed. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphics processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the network module 102. The microphone 1042 can receive sound, and can process such sound into audio data. The processed audio data can be converted into a format that can be transmitted to a mobile communication base station via the radio frequency unit 101 in the case of a telephone call mode and output.

The terminal device 100 further includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor. The ambient light sensor can adjust the brightness of the display panel 1061 according to the brightness of the ambient light. The proximity sensor can close the display panel 1061 and the display panel 1061 when the terminal device 100 is moved to the ear. / Or backlight. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in various directions (usually three axes), and can detect the magnitude and direction of gravity when it is stationary, which can be used to identify the attitude of the terminal device (such as horizontal and vertical screen switching, related games , Magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tap), etc .; sensor 105 can also include fingerprint sensor, pressure sensor, iris sensor, molecular sensor, gyroscope, barometer, hygrometer, thermometer, Infrared sensors and the like are not repeated here.

The display unit 106 is configured to display information input by the user or information provided to the user. The display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

The user input unit 107 may be configured to receive inputted numeric or character information and generate key signal inputs related to user settings and function control of the terminal device 100. Specifically, the user input unit 107 includes a touch panel 1071 and other input devices 1072. Touch panel 1071, also known as touch screen, can collect user's touch operations on or near it (such as the user using a finger, stylus, etc. any suitable object or accessory on touch panel 1071 or near touch panel 1071 operating). The touch panel 1071 may include two parts, a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch position, and detects the signal caused by the touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into contact coordinates, and sends it The processor 110 receives and executes a command sent by the processor 110. In addition, various types such as resistive, capacitive, infrared, and surface acoustic wave can be used to implement the touch panel 1071. In addition to the touch panel 1071, the user input unit 107 may also include other input devices 1072. Specifically, other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, and details are not described herein again.

Further, the touch panel 1071 may be overlaid on the display panel 1061. When the touch panel 1071 detects a touch operation on or near the touch panel 1071, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event. The type of event provides a corresponding visual output on the display panel 1061. Although in FIG. 5, the touch panel 1071 and the display panel 1061 are implemented as two independent components to implement the input and output functions of the terminal device 100, in some embodiments, the touch panel 1071 and the display panel 1061 can be implemented. The integration implements the input and output functions of the terminal device 100, which is not specifically limited here.

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

The memory 109 may be used to store software programs and various data. The memory 109 may mainly include a storage program area and a storage data area, where the storage program area may store an operating system, at least one application required by a function (such as a sound playback function, an image playback function, etc.), etc .; the storage data area may store data according to Data (such as audio data, phone book, etc.) created by the use of mobile phones. In addition, the memory 109 may include a high-speed random access memory, and may further include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.

The processor 110 is a control center of the terminal device 100, and connects various parts of the entire terminal device 100 by using various interfaces and lines, and runs or executes software programs and / or modules stored in the memory 109, and calls stored in the memory 109 Data, perform various functions of the terminal device 100 and process the data, so as to monitor the terminal device 100 as a whole. The processor 110 may include one or more processing units; optionally, the processor 110 may integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, and an application program, etc. The tuning processor mainly handles wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 110.

The terminal device 100 may further include a power source 111 (such as a battery) for supplying power to various components. Optionally, the power source 111 may be logically connected to the processor 110 through a power management system, thereby implementing management of charging, discharging, and power consumption through the power management system. Management and other functions.

In addition, the terminal device 100 includes some functional modules that are not shown, and details are not described herein again.

FIG. 6 is a schematic diagram of a hardware structure of a network device according to an embodiment of the present invention. The network device 800 includes a processor 801, a transceiver 802, a memory 803, a user interface 804, and a bus interface.

The transceiver 802 is configured to send DCI to a terminal device. The DCI mentioned above is used to instruct the terminal device to use a DMRS antenna port corresponding to each codeword when the first channel is transmitted using dual codewords; the first channel is PUSCH or PDSCH; the above DCI is used to instruct a terminal device to determine a DMRS antenna port according to the DCI.

The network device provided in the embodiment of the present invention instructs the terminal device through DCI to indicate to the terminal device that the terminal device adopts a dual codeword to transmit a DMRS antenna port corresponding to each codeword when the first channel (that is, PUSCH or PDSCH) is transmitted, so that the terminal device Based on the DCI, the DMRS antenna port corresponding to each codeword can be directly determined, thereby improving the PDSCH / PUSCH transmission rate, and improving communication efficiency and efficiency.

In the embodiment of the present invention, in FIG. 6, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 801 and various circuits of the memory represented by the memory 803 are linked together. . The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art, so they are not described further herein. The bus interface provides an interface. The transceiver 802 may be multiple elements, including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium. For different user devices, the user interface 804 may also be an interface capable of externally connecting and connecting the required devices. The connected devices include, but are not limited to, a keypad, a display, a speaker, a microphone, a joystick, and the like. The processor 801 is responsible for managing the bus architecture and general processing, and the memory 803 may store data used by the processor 801 when performing operations.

In addition, the network device 800 also includes some functional modules that are not shown, and details are not described herein again.

Optionally, an embodiment of the present invention further provides a terminal device including a processor, a memory, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, the computer program in the foregoing embodiment is implemented. The process of demodulating the reference signal antenna port mapping method can achieve the same technical effect. To avoid repetition, it will not be repeated here.

Optionally, an embodiment of the present invention further provides a network device, including a processor, a memory, and a computer program stored on the memory and executable on the processor. When the computer program is executed by the processor, the computer program in the foregoing embodiment is implemented. The process of demodulating the reference signal antenna port mapping method can achieve the same technical effect. To avoid repetition, it will not be repeated here.

An embodiment of the present invention further provides a computer-readable storage medium. A computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, a plurality of demodulation reference signal antenna port mapping methods in the foregoing embodiments are implemented. Process, and can achieve the same technical effect, in order to avoid repetition, it will not be repeated here. Among them, a computer-readable storage medium, such as a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like.

It should be noted that, in this article, the terms "including", "including" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, It also includes other elements not explicitly listed, or elements inherent to such a process, method, article, or device. Without more restrictions, an element limited by the sentence "including a ..." does not exclude that there are other identical elements in the process, method, article, or device that includes the element.

Through the description of the above embodiments, those skilled in the art can clearly understand that the methods in the above embodiments can be implemented by means of software plus a necessary universal hardware platform, and of course, also by hardware, but in many cases the former is better. Implementation. Based on such an understanding, the technical solution of the present invention, in essence, or a part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, The optical disc) includes several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in the embodiments of the present invention.

The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above specific implementations, and the above specific implementations are only schematic and not restrictive. Those of ordinary skill in the art at Under the enlightenment of this application, many forms can be made without departing from the scope of the present invention and the scope of protection of the claims, all of which fall into the protection of the present invention.

Claims

A method for mapping a demodulation reference signal DMRS antenna port, which is characterized in that it is applied to a terminal device. The method includes:

Receiving downlink control information DCI from a network device; wherein the DCI is used to instruct the terminal device to use a DMRS antenna port corresponding to each codeword when the first channel is transmitted using dual codewords; the first channel is a physical uplink share Channel PUSCH or physical downlink shared channel PDSCH;

Determining the DMRS antenna port according to the DCI.
The method according to claim 1, wherein:

When the first channel is the PUSCH, the DCI is used to indicate whether the terminal device repeatedly sends the PUSCH; or, when the first channel is the PDSCH, the DCI It is used to indicate whether the terminal device receives the PDSCH in combination.
The method according to claim 2, wherein the DCI is used to instruct the terminal device to use the same DMRS antenna port corresponding to each codeword when the first channel is transmitted in a dual codeword.
The method according to any one of claims 1 to 3, wherein the antenna port domain in the DCI includes at least one antenna port domain value, and one antenna port domain value is used to indicate that the terminal device is using a dual code A DMRS antenna port corresponding to each codeword when the word is transmitted at least once in the first channel.
The method according to claim 1, wherein determining the DMRS antenna port according to the DCI comprises:

Determining the DMRS antenna port according to the DCI and a predetermined rule;

The predetermined rule is configured by the network device for the terminal device, or is predefined.
The method according to claim 5, wherein:

The DCI is used to indicate at least one of the following information of the DMRS in the first channel: the number of occupied symbols of the front DMRS, the number of code division multiplexed CDM groups occupied by the dataless DMRS antenna port, and the type of the DMRS;

The predetermined rule includes: when the total number of DMRS antenna ports corresponding to the dual codeword is equal to 2, the first codeword corresponds to the first DMRS antenna port, and the second codeword corresponds to the second DMRS antenna port;

When the total number of DMRS antenna ports corresponding to the dual codeword is equal to 3, the first codeword corresponds to a third DMRS antenna port, and the second codeword corresponds to a fourth DMRS antenna port;

When the total number of DMRS antenna ports corresponding to the dual codeword is equal to 4, the first codeword corresponds to a fifth DMRS antenna port, and the second codeword corresponds to a sixth DMRS antenna port;

When the total number of DMRS antenna ports corresponding to the dual codeword is equal to 5, the first codeword corresponds to a seventh DMRS antenna port, and the second codeword corresponds to an eighth DMRS antenna port;

When the total number of DMRS antenna ports corresponding to the dual codeword is equal to 6, the first codeword corresponds to a ninth DMRS antenna port, and the second codeword corresponds to a tenth DMRS antenna port;

When the total number of DMRS antenna ports corresponding to the dual codeword is equal to 7, the first codeword corresponds to the eleventh DMRS antenna port, and the second codeword corresponds to the twelfth DMRS antenna port;

When the total number of DMRS antenna ports corresponding to the dual codeword is equal to 8, the first codeword corresponds to a thirteenth DMRS antenna port, and the second codeword corresponds to a fourteenth DMRS antenna port.
The method according to claim 6, wherein:

When the number of CDM groups is 1, the port identifier of the first DMRS antenna port is: 0, and the port identifier of the second DMRS antenna port is: 1;

If the type of the DMRS is the first type and the maximum number of DMRS symbols is 2, when the number of the CDM groups is 2, the port identifier of the first DMRS antenna port is: 0, and the second DMRS The port identification of the antenna port is: 2;

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 1 or 2, when the number of the CDM groups is 2 or 3, the port identifier of the first DMRS antenna port is: 0, so The port identifier of the second DMRS antenna port is at least one of the following: 2, or, 4; or the port identifier of the first DMRS antenna port is: 2 and the port identifier of the second DMRS antenna port is: 4 .
The method according to claim 6, wherein:

If the type of the DMRS is the first type and the maximum number of symbols of the DMRS is 2,

When the number of CDM groups is 1, the port identifier of the third DMRS antenna port is: 0, and the port identifier of the fourth DMRS antenna port is: 4 and 5; or, the The port identifiers are: 0 and 1, and the port identifier of the fourth DMRS antenna port is: 4;

When the number of CDM groups is 2, the port identifier of the third DMRS antenna port is: 0, and the port identifier of the fourth DMRS antenna port is: 2 and 3; or, the The port identifiers are: 0 and 1, and the port identifier of the fourth DMRS antenna port is 2;

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 1 or 2,

When the number of CDM groups is 1, the port identifier of the third DMRS antenna port is: 0, and the port identifier of the fourth DMRS antenna port is: 6 and 7; or, the The port identifiers are: 0 and 1, and the port identifier of the fourth DMRS antenna port is: 6;

When the number of CDM groups is 2 or 3, the port identifier of the third DMRS antenna port is: 0, and the port identifier of the fourth DMRS antenna port: 2 and 3; or, the third DMRS antenna port And the port identifier of the fourth DMRS antenna port is: 2;

When the number of CDM groups is 3, the port identifier of the third DMRS antenna port is: 0, and the port identifier of the fourth DMRS antenna port is: 2 and 4; or, the The port identifiers are: 0 and 2, and the port identifier of the fourth DMRS antenna port is: 4.
The method according to claim 6, wherein:

If the type of the DMRS is the first type and the maximum number of symbols of the DMRS is 2,

When the number of CDM groups is 1, the port identifiers of the fifth DMRS antenna port are: 0 and 1, and the port identifiers of the sixth DMRS antenna port are: 4 and 5;

When the number of CDM groups is 2, the port identifier of the fifth DMRS antenna port is: 0, and the port identifier of the sixth DMRS antenna port is: 2, 3, and 6; or the fifth DMRS antenna The port identifiers of the ports are: 0 and 1, and the port identifiers of the sixth DMRS antenna port are: 2 and 3; or, the port identifiers of the fifth DMRS antenna port are: 0, 1, and 4, and the sixth The port identification of the DMRS antenna port is: 2;

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 1 or 2,

When the number of CDM groups is 1, the port identifiers of the fifth DMRS antenna port are: 0 and 1, and the port identifiers of the sixth DMRS antenna port are: 6 and 7;

When the number of CDM groups is 2 or 3, the port identifier of the fifth DMRS antenna port is: 0, and the port identifier of the sixth DMRS antenna port is: 2, 3, and 8; or, the fifth The port identifier of the DMRS antenna port is: 0 and 1, and the port identifier of the sixth DMRS antenna port is at least one of the following: 2 and 3, or, 4 and 5; or, the port identifier of the fifth DMRS antenna port Are: 2 and 3, the port identifiers of the sixth DMRS antenna port are: 4 and 5; or the port identifiers of the fifth DMRS antenna port are: 0, 1, and 6, the The port identifier is: 2;

When the number of CDM groups is 3, the port identifier of the fifth DMRS antenna port is: 0, and the port identifier of the sixth DMRS antenna port is: 2, 4, and 5; or, the fifth DMRS antenna The port identifiers of the ports are: 0 and 1, and the port identifiers of the sixth DMRS antenna port are: 2 and 4; or, the port identifiers of the fifth DMRS antenna port are: 0, 1, and 2, and the sixth The port identification of the DMRS antenna port is: 4.
The method according to claim 6, wherein:

If the type of the DMRS is the first type and the maximum number of symbols of the DMRS is 2,

When the number of CDM groups is 2, the port identifier of the seventh DMRS antenna port is: 0, and the port identifier of the eighth DMRS antenna port is: 2, 3, 6, and 7; or, the seventh The port identifiers of the DMRS antenna ports are: 0 and 1, and the port identifiers of the eighth DMRS antenna port are: 2, 3, and 6; or, the port identifiers of the seventh DMRS antenna port are: 0, 1, and 4, The port identifiers of the eighth DMRS antenna port are: 2 and 3; or, the port identifiers of the seventh DMRS antenna port are: 0, 1, 4, and 5, and the port identifiers of the eighth DMRS antenna port are: 2;

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 1 or 2,

When the number of CDM groups is 2 or 3, the port identifier of the seventh DMRS antenna port is: 0, and the port identifier of the eighth DMRS antenna port is: 2, 3, 8, and 9; or, The port identifiers of the seventh DMRS antenna port are: 0 and 1, and the port identifiers of the eighth DMRS antenna port are: 2, 3, and 8; or, the port identifiers of the seventh DMRS antenna port are: 0, 1, and 6. The port identifiers of the eighth DMRS antenna port are: 2 and 3; or, the port identifiers of the seventh DMRS antenna port are: 0, 1, 6, and 7, and the port identifiers of the eighth DMRS antenna port Is: 2;

When the number of CDM groups is 3, the port identifier of the seventh DMRS antenna port is: 0, and the port identifier of the eighth DMRS antenna port is: 2, 3, 4, and 5; or, the seventh The port identifiers of the DMRS antenna ports are: 0 and 1, and the port identifiers of the eighth DMRS antenna port are: 2, 3, and 4; or, the port identifiers of the seventh DMRS antenna port are: 0 and 2, the The port identifiers of the eighth DMRS antenna port are: 4, 5, and 10; or, the port identifiers of the seventh DMRS antenna port are: 0, 1, and 2, and the port identifiers of the eighth DMRS antenna port are: 4 and 5; or, the port identifier of the seventh DMRS antenna port is: 0, 1, and 6, and the port identifier of the eighth DMRS antenna port is: 2 and 4; or, the port identifier of the seventh DMRS antenna port The values are: 0, 1, 2 and 3, and the port identification of the eighth DMRS antenna port is: 4.
The method according to claim 6, wherein:

If the type of the DMRS is the first type and the maximum number of symbols of the DMRS is 2,

When the number of CDM groups is 2, the port identifiers of the ninth DMRS antenna port are: 0 and 1, and the port identifiers of the tenth DMRS antenna port are: 2, 3, 6, and 7; or, The port identification of the ninth DMRS antenna port is: 0, 1, and 4, and the port identification of the tenth DMRS antenna port is: 2, 6, and 7; or, the port identification of the ninth DMRS antenna port is: 0, 1, 4, and 5, the port identifiers of the tenth DMRS antenna port are: 2 and 3;

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 1 or 2,

When the number of CDM groups is 2 or 3, the port identifiers of the ninth DMRS antenna port are: 0 and 1, and the port identifiers of the tenth DMRS antenna port are: 2, 3, 8 and 9; or, The port identifiers of the ninth DMRS antenna port are: 0, 1, and 6, and the port identifiers of the tenth DMRS antenna port are: 2, 8, and 9; or, the port identifier of the ninth DMRS antenna port is: 0, 1, 6, and 7, the port identifiers of the tenth DMRS antenna port are: 2 and 3;

When the number of CDM groups is three, the port identifiers of the ninth DMRS antenna port are: 0 and 1, and the port identifiers of the tenth DMRS antenna port are: 2, 3, 4, and 5; or, The port identifiers of the ninth DMRS antenna port are: 0, 1, 2 and 3, and the port identifiers of the tenth DMRS antenna port are: 4 and 5.
The method according to claim 6, wherein:

If the type of the DMRS is the first type and the maximum number of symbols of the DMRS is 2,

When the number of CDM groups is 2, the port identifiers of the eleventh DMRS antenna port are: 0, 1, and 4, and the port identifiers of the twelfth DMRS antenna port are: 2, 3, 6, and 7; Alternatively, the port identifiers of the eleventh DMRS antenna port are: 0, 1, 4, and 5, and the port identifiers of the twelfth DMRS antenna port are: 2, 3, and 6;

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 2,

When the number of CDM groups is 2 or 3, the port identifiers of the eleventh DMRS antenna port are: 0, 1, and 6, and the port identifiers of the twelfth DMRS antenna port are: 2, 3, 8, and 9; Alternatively, the port identifiers of the eleventh DMRS antenna port are: 0, 1, 6, and 7, and the port identifiers of the twelfth DMRS antenna port are: 2, 3, and 8;

When the number of CDM groups is three, the port identifiers of the eleventh DMRS antenna port are: 0, 1, and 6, and the port identifiers of the twelfth DMRS antenna port are: 2, 3, 4, and 5; Alternatively, the port identifiers of the eleventh DMRS antenna port are: 0, 1, 2, and 3, and the port identifiers of the twelfth DMRS antenna port are: 4, 5, and 10.
The method according to claim 6, wherein:

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 2,

When the number of CDM groups is 2 or 3, the port identification of the thirteenth DMRS antenna port is: 0, 1, 6, and 7, and the port identification of the fourteenth DMRS antenna port is at least one of the following: 2, 3, 8 and 9, or 4, 5, 10 and 11; or, the port identifier of the thirteenth DMRS antenna port is: 2, 3, 8 and 9, the fourteenth DMRS antenna port The port identifiers are: 4, 5, 10, and 11;

When the number of CDM groups is three, the port identifiers of the thirteenth DMRS antenna port are: 0, 1, 6, and 7, and the port identifiers of the fourteenth DMRS antenna port are: 2, 3, 4, and 5.
A method for mapping a demodulation reference signal DMRS antenna port, which is characterized in that it is applied to network equipment. The method includes:

Sending downlink control information DCI to a terminal device; wherein the DCI is used to instruct the terminal device to use a DMRS antenna port corresponding to each codeword when the first channel is transmitted using dual codewords; the first channel is a physical uplink share A channel PUSCH or a physical downlink shared channel PDSCH; the DCI is used to instruct the terminal device to determine the DMRS antenna port according to the DCI.
The method according to claim 14, wherein:

When the first channel is the PUSCH, the DCI is used to indicate whether the terminal device repeatedly sends the PUSCH; or, when the first channel is the PDSCH, the DCI It is used to indicate whether the terminal device receives the PDSCH in combination.
The method according to claim 15, wherein the DCI is used to instruct the terminal device to use the same DMRS antenna port corresponding to each codeword when the first channel is transmitted by using a dual codeword.
The method according to any one of claims 14 to 16, wherein the antenna port domain in the DCI includes at least one antenna port domain value, and one antenna port domain value is used to indicate that the terminal device is using a dual code A DMRS antenna port corresponding to each codeword when the word is transmitted at least once in the first channel.
The method according to claim 14, wherein before the sending DCI to the terminal device, the method further comprises:

Generating the DCI according to a predetermined rule and first information;

The first information includes at least one of the following: the number of occupied symbols of the front DMRS, the number of code division multiplexed CDM groups occupied by the dataless DMRS antenna port, and the type of DMRS; the predetermined rule is the network device It is configured for the terminal device, or is predefined.
The method according to claim 18, wherein:

The predetermined rule includes: when the total number of DMRS antenna ports corresponding to the dual codeword is equal to 2, the first codeword corresponds to the first DMRS antenna port, and the second codeword corresponds to the second DMRS antenna port;

When the total number of DMRS antenna ports corresponding to the dual codeword is equal to 3, the first codeword corresponds to a third DMRS antenna port, and the second codeword corresponds to a fourth DMRS antenna port;

When the total number of DMRS antenna ports corresponding to the dual codeword is equal to 4, the first codeword corresponds to a fifth DMRS antenna port, and the second codeword corresponds to a sixth DMRS antenna port;

When the total number of DMRS antenna ports corresponding to the dual codeword is equal to 5, the first codeword corresponds to a seventh DMRS antenna port, and the second codeword corresponds to an eighth DMRS antenna port;

When the total number of DMRS antenna ports corresponding to the dual codeword is equal to 6, the first codeword corresponds to a ninth DMRS antenna port, and the second codeword corresponds to a tenth DMRS antenna port;

When the total number of DMRS antenna ports corresponding to the dual codeword is equal to 7, the first codeword corresponds to the eleventh DMRS antenna port, and the second codeword corresponds to the twelfth DMRS antenna port;

When the total number of DMRS antenna ports corresponding to the dual codeword is equal to 8, the first codeword corresponds to a thirteenth DMRS antenna port, and the second codeword corresponds to a fourteenth DMRS antenna port.
The method according to claim 19, wherein:

When the number of CDM groups is 1, the port identifier of the first DMRS antenna port is: 0, and the port identifier of the second DMRS antenna port is: 1;

If the type of the DMRS is the first type and the maximum number of symbols of the DMRS is 2, when the number of the CDM groups is 2, the port identifier of the first DMRS antenna port is: 0, and the second DMRS The port identification of the antenna port is: 2;

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 1 or 2, when the number of the CDM groups is 2 or 3, the port identifier of the first DMRS antenna port is: 0, so The port identifier of the second DMRS antenna port is at least one of the following: 2, or, 4; or the port identifier of the first DMRS antenna port is: 2 and the port identifier of the second DMRS antenna port is: 4 .
The method according to claim 19, wherein:

If the type of the DMRS is the first type and the maximum number of symbols of the DMRS is 2,

When the number of CDM groups is 1, the port identifier of the third DMRS antenna port is: 0, and the port identifier of the fourth DMRS antenna port is: 4 and 5; or, the The port identifiers are: 0 and 1, and the port identifier of the fourth DMRS antenna port is: 4:

When the number of CDM groups is 2, the port identifier of the third DMRS antenna port is: 0, and the port identifier of the fourth DMRS antenna port is: 2 and 3; or, the The port identifiers are: 0 and 1, and the port identifier of the fourth DMRS antenna port is 2;

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 1 or 2,

When the number of CDM groups is 1, the port identifier of the third DMRS antenna port is: 0, and the port identifier of the fourth DMRS antenna port is: 6 and 7; or, the The port identifiers are: 0 and 1, and the port identifier of the fourth DMRS antenna port is: 6;

When the number of CDM groups is 2 or 3, the port identifier of the third DMRS antenna port is: 0, and the port identifier of the fourth DMRS antenna port: 2 and 3; or, the third DMRS antenna port And the port identifier of the fourth DMRS antenna port is: 2;

When the number of CDM groups is 3, the port identifier of the third DMRS antenna port is: 0, and the port identifier of the fourth DMRS antenna port is: 2 and 4; or, the The port identifiers are: 0 and 2, and the port identifier of the fourth DMRS antenna port is: 4.
The method according to claim 19, wherein:

If the type of the DMRS is the first type and the maximum number of symbols of the DMRS is 2,

When the number of CDM groups is 1, the port identifiers of the fifth DMRS antenna port are: 0 and 1, and the port identifiers of the sixth DMRS antenna port are: 4 and 5;

When the number of CDM groups is 2, the port identifier of the fifth DMRS antenna port is: 0, and the port identifier of the sixth DMRS antenna port is: 2, 3, and 6; or the fifth DMRS antenna The port identifiers of the ports are: 0 and 1, and the port identifiers of the sixth DMRS antenna port are: 2 and 3; or, the port identifiers of the fifth DMRS antenna port are: 0, 1, and 4, and the sixth The port identification of the DMRS antenna port is: 2;

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 1 or 2,

When the number of CDM groups is 1, the port identifiers of the fifth DMRS antenna port are: 0 and 1, and the port identifiers of the sixth DMRS antenna port are: 6 and 7;

When the number of CDM groups is 2 or 3, the port identifier of the fifth DMRS antenna port is: 0, and the port identifier of the sixth DMRS antenna port is: 2, 3, and 8; or, the fifth The port identifier of the DMRS antenna port is: 0 and 1, and the port identifier of the sixth DMRS antenna port is at least one of the following: 2 and 3, or, 4 and 5; or, the port identifier of the fifth DMRS antenna port Are: 2 and 3, the port identifiers of the sixth DMRS antenna port are: 4 and 5; or the port identifiers of the fifth DMRS antenna port are: 0, 1, and 6, the The port identifier is: 2;

When the number of CDM groups is 3, the port identifier of the fifth DMRS antenna port is: 0, and the port identifier of the sixth DMRS antenna port is: 2, 4, and 5; or, the fifth DMRS antenna The port identifiers of the ports are: 0 and 1, and the port identifiers of the sixth DMRS antenna port are: 2 and 4; or, the port identifiers of the fifth DMRS antenna port are: 0, 1, and 2, and the sixth The port identification of the DMRS antenna port is: 4.
The method according to claim 19, wherein:

If the type of the DMRS is the first type and the maximum number of symbols of the DMRS is 2,

When the number of CDM groups is 2, the port identifier of the seventh DMRS antenna port is: 0, and the port identifier of the eighth DMRS antenna port is: 2, 3, 6, and 7; or, the seventh The port identifiers of the DMRS antenna ports are: 0 and 1, and the port identifiers of the eighth DMRS antenna port are: 2, 3, and 6; or, the port identifiers of the seventh DMRS antenna port are: 0, 1, and 4, The port identifiers of the eighth DMRS antenna port are: 2 and 3; or, the port identifiers of the seventh DMRS antenna port are: 0, 1, 4, and 5, and the port identifiers of the eighth DMRS antenna port are: 2;

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 1 or 2,

When the number of CDM groups is 2 or 3, the port identifier of the seventh DMRS antenna port is: 0, and the port identifier of the eighth DMRS antenna port is: 2, 3, 8, and 9; or, The port identifiers of the seventh DMRS antenna port are: 0 and 1, and the port identifiers of the eighth DMRS antenna port are: 2, 3, and 8; or, the port identifiers of the seventh DMRS antenna port are: 0, 1, and 6. The port identifiers of the eighth DMRS antenna port are: 2 and 3; or, the port identifiers of the seventh DMRS antenna port are: 0, 1, 6, and 7, and the port identifiers of the eighth DMRS antenna port Is: 2;

When the number of CDM groups is 3, the port identifier of the seventh DMRS antenna port is: 0, and the port identifier of the eighth DMRS antenna port is: 2, 3, 4, and 5; or, the seventh The port identifiers of the DMRS antenna ports are: 0 and 1, and the port identifiers of the eighth DMRS antenna port are: 2, 3, and 4; or, the port identifiers of the seventh DMRS antenna port are: 0 and 2, the The port identifiers of the eighth DMRS antenna port are: 4, 5, and 10; or, the port identifiers of the seventh DMRS antenna port are: 0, 1, and 2, and the port identifiers of the eighth DMRS antenna port are: 4 and 5; or, the port identifier of the seventh DMRS antenna port is: 0, 1, and 6, and the port identifier of the eighth DMRS antenna port is: 2 and 4; or, the port identifier of the seventh DMRS antenna port The values are: 0, 1, 2 and 3, and the port identification of the eighth DMRS antenna port is: 4.
The method according to claim 19, wherein:

If the type of the DMRS is the first type and the maximum number of symbols of the DMRS is 2,

When the number of CDM groups is 2, the port identifiers of the ninth DMRS antenna port are: 0 and 1, and the port identifiers of the tenth DMRS antenna port are: 2, 3, 6, and 7; or, The port identification of the ninth DMRS antenna port is: 0, 1, and 4, and the port identification of the tenth DMRS antenna port is: 2, 6, and 7; or, the port identification of the ninth DMRS antenna port is: 0, 1, 4, and 5, the port identifiers of the tenth DMRS antenna port are: 2 and 3;

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 1 or 2,

When the number of CDM groups is 2 or 3, the port identifiers of the ninth DMRS antenna port are: 0 and 1, and the port identifiers of the tenth DMRS antenna port are: 2, 3, 8 and 9; or, The port identifiers of the ninth DMRS antenna port are: 0, 1, and 6, and the port identifiers of the tenth DMRS antenna port are: 2, 8, and 9; or, the port identifier of the ninth DMRS antenna port is: 0, 1, 6, and 7, the port identifiers of the tenth DMRS antenna port are: 2 and 3;

When the number of CDM groups is three, the port identifiers of the ninth DMRS antenna port are: 0 and 1, and the port identifiers of the tenth DMRS antenna port are: 2, 3, 4, and 5; or, The port identifiers of the ninth DMRS antenna port are: 0, 1, 2 and 3, and the port identifiers of the tenth DMRS antenna port are: 4 and 5.
The method according to claim 19, wherein:

If the type of the DMRS is the first type and the maximum number of symbols of the DMRS is 2,

When the number of CDM groups is 2, the port identifiers of the eleventh DMRS antenna port are: 0, 1, and 4, and the port identifiers of the twelfth DMRS antenna port are: 2, 3, 6, and 7; Alternatively, the port identifiers of the eleventh DMRS antenna port are: 0, 1, 4, and 5, and the port identifiers of the twelfth DMRS antenna port are: 2, 3, and 6;

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 2,

When the number of CDM groups is 2 or 3, the port identifiers of the eleventh DMRS antenna port are: 0, 1, and 6, and the port identifiers of the twelfth DMRS antenna port are: 2, 3, 8, and 9; Alternatively, the port identifiers of the eleventh DMRS antenna port are: 0, 1, 6, and 7, and the port identifiers of the twelfth DMRS antenna port are: 2, 3, and 8;

When the number of CDM groups is three, the port identifiers of the eleventh DMRS antenna port are: 0, 1, and 6, and the port identifiers of the twelfth DMRS antenna port are: 2, 3, 4, and 5; Alternatively, the port identifiers of the eleventh DMRS antenna port are: 0, 1, 2, and 3, and the port identifiers of the twelfth DMRS antenna port are: 4, 5, and 10.
The method according to claim 19, wherein:

If the type of the DMRS is the second type and the maximum number of symbols of the DMRS is 2,

When the number of CDM groups is 2 or 3, the port identification of the thirteenth DMRS antenna port is: 0, 1, 6, and 7, and the port identification of the fourteenth DMRS antenna port is at least one of the following: 2, 3, 8 and 9, or 4, 5, 10 and 11; or, the port identifier of the thirteenth DMRS antenna port is: 2, 3, 8 and 9, the fourteenth DMRS antenna port The port identifiers are: 4, 5, 10, and 11;

When the number of CDM groups is three, the port identifiers of the thirteenth DMRS antenna port are: 0, 1, 6, and 7, and the port identifiers of the fourteenth DMRS antenna port are: 2, 3, 4, and 5.
A terminal device, comprising:

A receiving module, configured to receive downlink control information DCI from a network device; wherein the DCI is used to instruct the terminal device to use a DMRS antenna port corresponding to each codeword when the first channel is transmitted using dual codewords; the first channel is Physical uplink shared channel PUSCH or physical downlink shared channel PDSCH;

A determining module, configured to determine the DMRS antenna port according to the DCI received by the receiving module.
A network device, comprising:

A sending module, configured to send downlink control information DCI to a terminal device; wherein the DCI is used to instruct the terminal device to use a DMRS antenna port corresponding to each codeword when the first channel is transmitted using dual codewords; the first The channel is a physical uplink shared channel PUSCH or a physical downlink shared channel PDSCH; the DCI is used to instruct the terminal device to determine the DMRS antenna port according to the DCI.
A terminal device, comprising a processor, a memory, and a computer program stored on the memory and executable on the processor. When the computer program is executed by the processor, the device is implemented as claimed in claim 1 Steps of the demodulation reference signal antenna port mapping method according to any one of 13 to 13.
A network device, comprising a processor, a memory, and a computer program stored on the memory and operable on the processor. When the computer program is executed by the processor, the computer program according to claim 14 is implemented. Steps of the demodulation reference signal antenna port mapping method according to any one of 26 to 26.
A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements any one of claims 1 to 13 or claims 14 to 26 Steps of the method for mapping a demodulation reference signal antenna port according to any one of the preceding.