WO2019137225A1

WO2019137225A1 - Phase tracking reference signal association indicating and sending method, network device, and terminal

Info

Publication number: WO2019137225A1
Application number: PCT/CN2018/124238
Authority: WO
Inventors: 郤伟; 孙鹏
Original assignee: 维沃移动通信有限公司
Priority date: 2018-01-11
Filing date: 2018-12-27
Publication date: 2019-07-18

Abstract

Embodiments of the present disclosure provide a phase tracking reference signal (PTRS) association indicating and sending method, a network device, and a terminal. The PTRS association indicating method comprises: sending indication information to the terminal, the indication information being used for indicating DMRS port information associated with a PTRS port when the terminal uses CP-OFDM waveform for uplink transmission.

Description

Phase tracking reference signal association indication and transmission method, network device and terminal

Cross-reference to related applications

The priority of the Chinese Patent Application No. 201810028278.8 filed on Jan. 11, 2018, and the priority of the Chinese Patent Application No. 201810151803.5 filed on Jan. 14, 2018, the entire contents of It is hereby incorporated by reference.

Technical field

The present disclosure relates to the field of wireless communication technologies, and in particular, to a Phase Tracking Reference Signal (PTRS) association indication and transmission method, a network device, and a terminal.

Background technique

In the future-oriented fifth generation (5Geration) mobile communication system, high-frequency transmission technology and large-scale antenna array technology have attracted attention in order to achieve a downlink transmission rate of 20 Gbps and an uplink transmission rate of 10 Gbps.

The high frequency band has more abundant spectrum resources, but the transmission distance is limited due to large attenuation. While large-scale antenna arrays can provide large beamforming gains, antenna apertures are typically larger. Therefore, the two can be combined: the short-wavelength characteristic of the high-frequency band reduces the aperture of the large-scale antenna array, making the dense deployment of the antenna easier and feasible. In turn, the large beamforming gain produced by large-scale antenna arrays can effectively combat high-frequency transmission losses, thereby greatly expanding the transmission distance of high-frequency transmission. Therefore, high-frequency transmission technology and large-scale antenna array technology are complementary, and the combination of the two can achieve complementary advantages, and it is the trend of the times.

Generally, in order to improve the effectiveness of transmission, high-order modulation such as 16QAM (Quadrature Amplitude Modulation), 64QAM, 256QAM is often used. However, high order modulation is often susceptible to phase noise. Moreover, the higher the modulation order, the more sensitive it is to phase noise. Worse, the higher the operating frequency, the greater the phase noise. Therefore, for high-frequency transmission, in order to remove phase noise, the transmitting end needs to transmit a reference signal known by the receiving end, that is, PTRS, and the receiving end can estimate the phase noise according to it and then perform corresponding phase compensation. Generally, the frequency domain density of the PTRS depends on the bandwidth allocated to the receiving end, that is, the number of physical resource blocks (PRBs). For example, one PTRS subcarrier can be inserted every 2 or every 4 resource blocks. The time domain density is related to the Modulation Coding Scheme (MCS) of the data symbols. For example, one PTRS symbol may be inserted every one, every two, or every four OFDM symbols.

If multiple DeModulation Reference Signal (DMRS) ports are Quasi-Co-Located (QCL), the phase noise of the corresponding data streams is the same, so these DMRS ports can share one PTRS. port. Therefore, the PTRS port needs to be sent on one of the corresponding DMRS ports, which we refer to associating or mapping the PTRS port to the DMRS port. In order to improve the accuracy of the phase noise estimation, the transmitting end needs to map the PTRS port to the best one of the plurality of DMRS ports corresponding to the quasi-co-located, and the receiving end needs to know which DMRS port the PTRS is on, otherwise Phase noise cannot be estimated using PTRS. To do this, the DMRS port where the PTRS is located needs to be explicitly or implicitly indicated.

In downlink transmission, a set of multiple quasi-co-located DMRS ports is referred to as a DMRS port group. That is, the DMRSs in the same DMRS port group are quasi-co-located, and the DMRS ports between different DMRS port groups are not quasi-co-located. According to the current 3GPP standardization progress, for single codeword transmission, PTRS is mapped on the DMRS port with the smallest port number. For dual codeword transmission, the PTRS is mapped on the DMRS port with the smallest port number in the DMRS port corresponding to the codeword with higher MCS order.

In the uplink transmission, the NR system employs two waveforms of DFT-S-OFDM (Discrete Fourier Transform-Extended-Orthogonal Frequency Division Multiplexing) and CP-OFDM (Cyclic Prefix-Orthogonal Frequency Division Multiplexing). The DFT-S-OFDM is limited to single-stream transmission. Therefore, when the PTRS needs to be sent, only the PTRS port needs to be mapped to the unique DMRS port. For CP-OFDM, although similar to downlink transmission, it is not yet determined which one of the multiple DMRS ports of the corresponding quasi-co-located port is mapped to the shared PTRS port.

Summary of the invention

In a first aspect, an embodiment of the present disclosure provides a phase tracking reference signal association indication method, which is applied to a network device, and includes: sending indication information to a terminal, where the indication information is used to indicate that the terminal is in a CP-OFDM waveform. In the uplink transmission, the DMRS port information associated with the PTRS port.

In a second aspect, an embodiment of the present disclosure provides a phase tracking reference signal sending method, which is applied to a terminal, including: acquiring DMRS port information associated with a PTRS port in an uplink transmission using a CP-OFDM waveform; In the uplink transmission of the OFDM waveform, the data of the PTRS port is transmitted on the DMRS port associated with the transmitting PTRS port.

In a third aspect, an embodiment of the present disclosure provides a network device, including: a sending module, configured to send, to a terminal, indication information, where the indication information is used to indicate that the terminal is in an uplink transmission using a CP-OFDM waveform, DMRS port information associated with the PTRS port.

In a fourth aspect, an embodiment of the present disclosure provides a terminal, including: an obtaining module, configured to acquire a phase tracking reference signal PTRS port in an uplink transmission using a cyclic prefix-orthogonal frequency division multiplexing (PC-OFDM) waveform. Associated demodulation reference signal DMRS port information; a sending module, configured to send data of the PTRS port on the DMRS port associated with the transmitting PTRS port in an uplink transmission using a CP-OFDM waveform.

In a fifth aspect, an embodiment of the present disclosure provides a network device including a processor, a memory, and a computer program stored on the memory and executable on the processor, the computer program being the processor The step of implementing the phase tracking reference signal correlation indication method described above is performed.

In a sixth aspect, an embodiment of the present disclosure provides a terminal, including a processor, a memory, and a computer program stored on the memory and executable on the processor, the computer program being executed by the processor The steps of the above phase tracking reference signal transmitting method are implemented.

In a seventh aspect, an embodiment of the present disclosure provides a computer readable storage medium, where the computer readable storage medium stores a computer program, and the computer program is executed by a processor to implement the phase tracking reference signal association indication method. A step of.

In an eighth aspect, an embodiment of the present disclosure provides a computer readable storage medium, where the computer readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for transmitting the phase tracking reference signal is implemented. step.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings to be used in the description of the embodiments of the present disclosure will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present disclosure. Other drawings may also be obtained from those of ordinary skill in the art based on these drawings without the inventive labor.

1 is a structural diagram of a network system to which an embodiment of the present disclosure is applicable;

FIG. 2 is a schematic flowchart diagram of a phase tracking reference signal association indication method according to an embodiment of the present disclosure;

FIG. 3 is a schematic flowchart diagram of a phase tracking reference signal sending method according to an embodiment of the present disclosure;

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

FIG. 5 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of hardware of a mobile terminal that implements an embodiment of the present disclosure.

Detailed ways

The technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. It is apparent that the described embodiments are part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure are within the scope of the disclosure.

Referring to FIG. 1 , FIG. 1 is a structural diagram of a network system according to an embodiment of the present disclosure. As shown in FIG. 1 , the terminal 11 and the network device 12 are included. The terminal 11 may be a user equipment (User Equipment, UE for short). ), for example, it can be a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a mobile Internet device (MID) or A terminal device such as a wearable device, it should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present disclosure. The network device 12 may be a base station of 5G or later (eg, gNB, 5G NR NB), or a base station in other communication systems, or a Node B, an evolved Node B, or other words in the field, as long as The same or similar technical effects are achieved, and the base station is not limited to a specific technical vocabulary. It should be noted that in the embodiment of the present disclosure, only the 5G base station is taken as an example, but the specific type of the network device 12 is not limited.

It should be noted that the communication device in the embodiment of the present disclosure may be the terminal 11 or may be the network device 12, and specific functions of the communication device will be specifically described by using the following embodiments.

Referring to FIG. 2, FIG. 2 is a schematic flowchart of a phase tracking reference signal association indication method according to an embodiment of the present disclosure. The phase tracking reference signal association indication method is applied to a network device, including:

Step 21: Send indication information to the terminal, where the indication information is used to indicate DMRS port information associated with the PTRS port in the uplink transmission of the CP-OFDM waveform.

The DMRS port associated with the PTRS port, that is, the DMRS port for transmitting the data of the PTRS port, may also be referred to as a DMRS port to which the PTRS port is mapped.

In the embodiment of the present disclosure, the network device sends the indication information to the terminal, where the indication information is used to indicate the DMRS port information that is associated with the PTRS port in the uplink transmission using the CP-OFDM waveform, so that the terminal can adopt the CP. In the uplink transmission of the OFDM waveform, on the DMRS port indicated by the network device and associated with the PTRS port, the data of the PTRS port is sent, and the network device can accurately know the DMRS port that sends the PTRS, and receive the PTRS at the DMRS port, thereby accurately Ground noise is estimated.

In an embodiment of the present disclosure, the DMRS port information associated with the PTRS port may be the number of the DMRS port associated with the PTRS port. Of course, except for the number, it is not excluded to use other information to indicate the DMRS port, for example, the layer number corresponding to a certain data layer in the uplink transmission.

In the embodiment of the disclosure, when the transmission mode of the uplink transmission is different, the indication information may be sent to the terminal by using different indication manners.

In some embodiments of the present disclosure, when the uplink transmission is based on non-codebook transmission, the network device sends a sounding reference signal to the terminal through high layer signaling, such as radio resource control (RRC) signaling (Sounding Reference Signal). Corresponding relationship between SRS) resources and PTRS ports.

The sending the indication information to the terminal includes: sending the indication information to the terminal when the PTRS ports corresponding to the at least two SRS resources are the same.

For the transmission mode of the non-codebook, in the embodiment of the present disclosure, the network device may configure a PTRS port number for each configured SRS resource by using RRC signaling, that is, configuring a correspondence between the SRS resource and the PTRS port. The number of PTRS ports may also be configured by the network device to the terminal through RRC signaling. Typically, SRS resources correspond to DMRS ports. If the PTRS port numbers corresponding to the multiple SRS resources are the same, the DMRS ports corresponding to the SRS resources share the PTRS port. When there are at least two DMRS ports sharing one PTRS port, the indication information needs to be sent to the terminal to indicate the DMRS port information associated with the PTRS port, that is, the indication, in the uplink transmission using the CP-OFDM waveform. The terminal is configured to send a DMRS port of the PTRS port in an uplink transmission using a CP-OFDM waveform.

Specifically, in the embodiment of the present disclosure, when the PTRS ports corresponding to the at least two SRS resources are the same, the step of sending the indication information to the terminal may include one of the following steps:

(1) When the number of PTRS ports is 1, and the number of DMRS ports is 2, the indication information is sent to the terminal by 1 bit;

(2) when the number of PTRS ports is 2 and the number of DMRS ports is 2, the indication information is not sent to the terminal;

(3) When the number of PTRS ports is 1, and the number of DMRS ports is 4, the indication information is sent to the terminal by 2 bits;

(4) When the number of PTRS ports is 2 and the number of DMRS ports is 4, the indication information is transmitted to the terminal by 2 bits.

For the mode (1) in the embodiment of the present disclosure, when the number of PTRS ports is 1, and the number of DMRS ports is 2, it can be understood that the two DMRS ports share the PTRS port, because the number of DMRS ports is only two. Therefore, the DMRS port information associated with the PTRS port can be transmitted to the terminal through 1 bit.

For the mode (2) in the embodiment of the present disclosure, when the number of PTRS ports is 2 and the number of DMRS ports is 2, it can be understood that each PTRS port corresponds to one DMRS port, so that the indication information may not be sent to the terminal. To save the overhead of downlink signaling.

For the mode (3) in the embodiment of the present disclosure, when the number of PTRS ports is 1, and the number of DMRS ports is 4, it can be understood that the four DMRS ports share one PTRS port, and need to send to the terminal by using 2 bits. The indication information is to indicate DMRS port information associated with the PTRS port.

For the mode (4) in the embodiment of the present disclosure, when the number of PTRS ports is 2 and the number of DMRS ports is 4, it can be understood that there are two or three DMRS ports that need to share one PTRS port, and therefore need to pass 2 bits. The indication information is sent to the terminal to indicate DMRS port information associated with the PTRS port.

In some other embodiments of the present disclosure, when the uplink transmission is based on the codebook transmission, the step of sending the indication information to the terminal includes:

Transmitting a correspondence between a PTRS port and a DMRS port to a terminal by using a Transmit Precoding Matrix Indicator (TPMI) and a Transmit Rank Indicator (TRI);

And transmitting the indication information to the terminal according to the TPMI and the TRI.

For the transmission mode of the codebook, in the embodiment of the present disclosure, the network device may share the correspondence between the PTRS port and the DMRS port through the TPMI and the TRI.

Uplink transmission is divided into three types: full coherent transmission, semi-coherent transmission, and non-coherent transmission. For full coherent transmission, only one upstream PTRS port is required. That is, if a terminal reports to the network device that it can support full coherent transmission, the network device will only configure one PTRS port for the terminal. For semi-coherent and non-coherent transmissions, multiple upstream PTRS ports are required.

Moreover, the network device limits its TPMI selection based on the capabilities of the terminal. For example, for a terminal supporting full coherent transmission, the network device may consider all codewords in the codebook when selecting the TPMI for it; and for the terminal that only supports semi-coherent transmission or non-coherent transmission, the network device selects TPMI for it. When selected, it can only be selected in part of the codewords in the codebook (such as the TPMI corresponding to the antenna selection).

Specifically, in the embodiment of the present disclosure, the step of sending the indication information to the terminal according to the TPMI and the TRI may include:

When the TRI is 1, the indication information is not sent to the terminal.

When the TRI is 1, the DMRS port is only one, and the PTRS port is mapped to the unique DMRS port. Therefore, the indication information can be sent to the terminal without introducing additional bits, thereby saving the downlink signaling overhead.

The foregoing descriptions of the uplink transmission are classified into three types: full-coherent transmission, semi-coherent transmission, and non-coherent transmission. For the terminals supporting different transmission types, the manner of transmitting the indication information to the terminal is also different. .

For a terminal supporting full coherent transmission, the step of transmitting the indication information to the terminal according to the TPMI and TRI may include one of the following steps:

(1) when the TRI is 2, the indication information is sent to the terminal by 1 bit;

(2) When the TRI is 3 or 4, the indication information is transmitted to the terminal by 2 bits.

The number of PTRS ports of a terminal supporting full coherent transmission is 1.

For the mode (1) in the embodiment of the present disclosure, when the TRI is 2, there are two DMRS ports, so the indication information may be sent to the terminal by using 1 bit to indicate the DMRS port information associated with the PTRS port. .

In addition, in this mode, the number of transmitting antennas may be 2 or 4. When the number of transmitting antennas is 2, the TPMI may be 0, 1, or 2. When the number of transmitting antennas is 4, the TPMI may be 0, 1, ... or 21.

For the mode (2) in the embodiment of the present disclosure, when the TRI is 3 or 4, there are 3 or 4 DMRS ports, and thus the indication information needs to be sent to the terminal through 2 bits to indicate that the PTRS port is associated with the PTRS port. DMRS port information.

In addition, in this mode, the number of transmitting antennas may be 4, when TRI is 3, and the number of transmitting antennas is 4, the TPMI may be 0, 1, ... or 6. When TRI is 4 and the number of transmit antennas is 4, the TPMI can be 0, 1, ... or 4.

For a terminal supporting non-coherent or semi-coherent transmission, the step of transmitting the indication information to the terminal according to the TPMI and TRI includes one of the following steps:

(1) when the number of transmitting antennas Tx is 2, TRI is 2, TPMI is 0, and the number of PTRS ports is 2, the indication information is not sent to the terminal;

(2) When the number of transmitting antennas Tx is 4, TRI is 2, TPMI is 0, 2, 3, 5, 6, 7, 8, 9, 10, 11, 12 or 13, and the number of PTRS ports is 2, Sending the indication information to the terminal;

(3) when the number of transmitting antennas Tx is 4, TRI is 2, TPMI is 1 or 4, and the number of PTRS ports is 1, the indication information is sent to the terminal by 1 bit;

(4) when the number of transmitting antennas Tx is 4, TRI is 3, TPMI is 0, 1, or 2, and the number of PTRS ports is 2, the indication information is sent to the terminal by 1 bit;

(5) When the number of transmitting antennas Tx is 4, TRI is 4, TPMI is 0, 1, or 2, and the number of PTRS ports is 2, the indication information is transmitted to the terminal by 2 bits.

For the mode (1) in the embodiment of the present disclosure, when the number of transmit antennas Tx is 2, TRI is 2, TPMI is 0, and the number of PTRS ports is 2, there are 2 DMRS ports, and the PTRS port and the DMRS port are one by one. Correspondingly, the indication information is not sent to the terminal by introducing additional bits;

For the mode (2) in the embodiment of the present disclosure, when the number of transmitting antennas Tx is 4, TRI is 2, and TPMI is 0, 2, 3, 5, 6, 7, 8, 9, 10, 11, 12, or 13, And when the number of PTRS ports is 2, there are two DMRS ports, and the PTRS ports are in one-to-one correspondence with the DMRS ports, and the indication information is not sent to the terminal.

For the mode (3) in the embodiment of the present disclosure, when the number of transmit antennas Tx is 4, TRI is 2, TPMI is 1 or 4, and the number of PTRS ports is 1, it indicates that there are two DMRS ports, and two DMRS ports are shared. A PTRS port, therefore, the indication information needs to be sent to the terminal by 1 bit to indicate the DMRS port information associated with the PTRS port.

For the mode (4) in the embodiment of the present disclosure, when the number of transmitting antennas Tx is 4, the TRI is 3, the TPMI is 0, 1 or 2, and the number of PTRS ports is 2, there are 3 DMRS ports, among which The two DMRS ports share one PTRS port, and therefore, the indication information needs to be sent to the terminal through 1 bit to indicate the DMRS port information associated with the PTRS port.

For the mode (5) in the embodiment of the present disclosure, when the number of transmitting antennas Tx is 4, the TRI is 4, the TPMI is 0, 1 or 2, and the number of PTRS ports is 2, there are 4 DMRS ports, among which 2 or 3 DMRS ports share one PTRS port, and therefore, the indication information needs to be sent to the terminal through 2 bits to indicate the DMRS port information associated with the PTRS port.

In another example, when the uplink transmission is based on a codebook, the step of sending the indication information to the terminal includes:

Corresponding relationship between the PTRS port and the DMRS port is sent to the terminal by the number of SRS ports, the number of PTRS ports, and the maximum number of supported transport layers.

In this case, when the maximum number of supported transport layers is 1, no extra bits are used to indicate the mapping of the PTRS port. The following two situations are respectively explained:

And transmitting, by the terminal, the corresponding relationship between the PTRS port and the DMRS port to the terminal according to the number of the SRS ports and the supported maximum number of transmission layers, and sending the indication information to the terminal The steps include at least one of the following steps:

When the number of PTRS ports is 1 and the maximum number of supported transport layers is 2, the indication information is sent to the terminal by 1 bit.

When the number of PTRS ports is 1 and the maximum number of supported transport layers is 3 or 4, the indication information is sent to the terminal by 2 bits.

On the other hand, for a terminal supporting semi-coherent or non-coherent transmission, the sending a PTRS port and a DMRS port to the terminal according to the number of SRS ports, the number of PTRS ports, and the maximum number of supported transport layers Corresponding relationship, the step of sending the indication information to the terminal includes at least one of the following steps:

When the number of PTRS ports is 2, the number of SRS ports is 2, and the maximum number of supported transport layers is 2, no extra bits are used to indicate mapping of the PTRS ports;

When the number of PTRS ports is 2, the number of SRS ports is 4, and the maximum number of supported transport layers is 2, no extra bits are used to indicate mapping of the PTRS ports;

When the number of PTRS ports is 1, the number of SRS ports is 4, and the maximum number of supported transport layers is 2, the indication information is sent to the terminal by using 1 bit;

When the number of PTRS ports is 2, the number of SRS ports is 4, and the maximum number of supported transport layers is 3, the indication information is sent to the terminal by using 1 bit;

When the number of PTRS ports is 2, the number of SRS ports is 4, and the maximum number of supported transport layers is 4, the indication information is sent to the terminal by 2 bits.

In the foregoing embodiment of the present disclosure, the step of transmitting the indication information to the terminal includes: sending the indication information to the terminal by using Downlink Control Information (DCI).

Specifically, a PTRS port mapping indication field (such as PTRS-portMapping-Indicator-nCB) may be introduced in the DCI to indicate DMRS port information associated with the PTRS port.

The phase tracking reference signal association indication method in the embodiment of the present disclosure will be described below with reference to specific embodiments.

Embodiment 1

In the embodiment of the present disclosure, in the non-codebook uplink transmission using the CP-OFDM waveform, the network device configures a number of a PTRS port for each SRS resource. When the numbers of the PTRS ports corresponding to the multiple SRS resources are the same, then the DMRS ports corresponding to the SRS resources share (ie, correspond to) the PTRS port. If the DMRS port corresponding to the PTRS port is not unique, the indication information may be sent to the terminal to indicate the DMRS port information associated with the PTRS port.

In the embodiment of the present disclosure, the DMRS port mapping indication field (such as PTRS-portMapping-Indicator-nCB) may be introduced in the DCI to indicate the DMRS port information associated with the PTRS port. The specific indication methods are shown in Table 1:

Table 1

It can be seen from Table 1 that the step of sending the indication information to the terminal may include:

(1) When the number of PTRS ports is 1, and the number of DMRS ports is 2, the indication information is sent to the terminal by 1 bit (0 or 1) for indicating the number of the DMRS port associated with the PTRS port.

(2) When the number of PTRS ports is 2 and the number of DMRS ports is 2, the indication information is not sent to the terminal; PTRS-portMapping-Indicator-nCB is “-”, indicating that no additional bits need to be introduced for indication. The number of the DMRS port associated with the PTRS port.

(3) When the number of PTRS ports is 1, and the number of DMRS ports is 4, the indication information is sent to the terminal through 2 bits (00, 01, 10 or 11) for indicating the DMRS port associated with the PTRS port. Numbering.

(4) When the number of PTRS ports is 2 and the number of DMRS ports is 4, the indication information is sent to the terminal through 2 bits (00, 01, 10 or 11) for indicating the DMRS port associated with the PTRS port. Numbering.

In the above table, when the number of PTRS ports is 2, and the DMRS port (data layer) mapped by the PTRS port is "corresponding to the DMRS port of the first and second data layers", it means PTRS port 0 and the first data. Corresponding to the DMRS port corresponding to the layer, the PTRS port 1 corresponds to the DMRS port corresponding to the second data layer, that is, the order of the number of the data layers in the above table is in one-to-one correspondence with the order of the PTRS ports. Other similar, no longer explain one by one.

Embodiment 2

In the embodiment of the present disclosure, in a non-codebook uplink transmission using a CP-OFDM waveform, the number of PTRS ports is 1 for a terminal supporting full coherent transmission, and a PTRS port mapping indication field is introduced in the DCI (for example, PTRS-portMapping-Indicator) -CB) is used to indicate DMRS port information associated with the PTRS port. The specific indication methods are shown in Table 2:

Table 2

That is, the step of sending the indication information to the terminal for the terminal supporting the full coherent transmission may include:

(1) When the TRI is 2, the indication information is sent to the terminal by 1 bit; and is used to indicate the number of the DMRS port associated with the PTRS port.

In this mode, the number of transmitting antennas may be 2 or 4. When the number of transmitting antennas is 2, the TPMI may be 0, 1, or 2. When the number of transmitting antennas is 4, the TPMI may be 0, 1, ... or 21.

(2) When the TRI is 3 or 4, the indication information is sent to the terminal by 2 bits, and is used to indicate the number of the DMRS port associated with the PTRS port.

In this mode, the number of transmitting antennas may be 4, when the TRI is 3, and the number of transmitting antennas is 4, the TPMI may be 0, 1, ... or 6. When TRI is 4 and the number of transmit antennas is 4, the TPMI can be 0, 1, ... or 4.

For terminals that only support non-coherent or semi-coherent transmission, a PTRS port mapping indication field (such as PTRS-portMapping-Indicator-CB) is introduced in the DCI to indicate the DMRS port information associated with the PTRS port. The specific indication methods are shown in Table 3:

table 3

For the terminal supporting the non-coherent or semi-coherent transmission, the step of sending the indication information to the terminal includes:

(1) When the number of transmitting antennas Tx is 2, TRI is 2, TPMI is 0, and the number of PTRS ports is 2, it is not necessary to introduce additional bits to send the indication information to the terminal;

(2) When the number of transmitting antennas Tx is 4, TRI is 2, and TPMI is 0, 2, 3, 5, 6, 7, 8, 9, 10, 11, 12 or 13 (where TPMI is 0, 2, 3) Or 5 corresponds to non-coherent transmission, TPMI is 6, 7, 8, 9, 10, 11, 12 or 13 corresponding to semi-coherent transmission), and when the number of PTRS ports is 2, no additional bits need to be introduced to send to the terminal Descriptive information;

(3) When the number of transmitting antennas Tx is 4, TRI is 2, TPMI is 1 or 4 (non-coherent transmission), and the number of PTRS ports is 1, the indication information is sent to the terminal by 1 bit for indicating The number of the DMRS port associated with the PTRS port;

(4) When the number of transmitting antennas Tx is 4, TRI is 3, and TPMI is 0, 1, or 2 (where TPMI is 0 for non-coherent transmission, TPMI is 1 or 2 for semi-coherent transmission), and the number of PTRS ports is 2. The indication information is sent to the terminal by using 1 bit to indicate the number of the DMRS port associated with the PTRS port.

(5) When the number of transmit antennas Tx is 4, TRI is 4, and TPMI is 0, 1, or 2 (where TPMI is 0 for non-coherent transmission, TPMI is 1 or 2 for semi-coherent transmission), and the number of PTRS ports is 2. The indication information is sent to the terminal by using 2 bits to indicate the number of the DMRS port associated with the PTRS port.

In the above table, when the number of PTRS ports is 2, and the DMRS port (data layer) mapped by the PTRS port is "corresponding to the DMRS port of the 3rd and 2nd data layers", it refers to the PTRS port 0 and the 3rd data. Corresponding to the DMRS port corresponding to the layer, the PTRS port 1 corresponds to the DMRS port corresponding to the second data layer, that is, the order of the number of the data layers in the above table is in one-to-one correspondence with the order of the PTRS ports. The reason is that SRS ports 0 and 2 share PTRS port 0 in the protocol; SRS ports 1 and 3 share PTRS port 1. Other similar, no longer explain one by one.

In another implementation, when the maximum number of supported transport layers is one, no additional bits need to be introduced to indicate the mapping of the PTRS ports.

For the full coherent transmission, the number of PTRS ports is 1. In the DCI, the PTRS port mapping indication field (such as PTRS-portMapping-Indicator-CB) is introduced. For reference, refer to Table 4:

Table 4

For semi-coherent or non-coherent transmission, a PTRS port mapping indication field (such as PTRS-portMapping-Indicator-CB) is introduced in the DCI. Can refer to Table 5:

table 5

Referring to Table 4 and Table 5 above, the extra bit is used to indicate the mapping relationship between the PTRS port and the DMRS port (ie, the uplink transmission data layer).

For the case of non-coherent transmission or semi-coherent transmission, the DMRS port corresponding to SRS ports 0 and 2 is first associated with PTRS port 0, and the DMRS port corresponding to SRS ports 1 and 3 is associated with PTRS port 1. For PTRS port 0 (or 1), when only one DMRS port corresponds to it, no additional indication information is needed; when there are two DMRS ports corresponding thereto, an additional 1 bit indication information is needed: '0' indicates that PTRS port 0 ( Or 1) mapping to the DMRS port corresponding to the lower data layer number; '1' means mapping PTRS port 0 (or 1) to the DMRS port corresponding to the higher data layer number.

specifically,

(1) When the number of PTRS ports is 2, the number of SRS ports is 2, and the maximum number of supported transport layers is 2, no extra bits are used to indicate mapping of PTRS ports;

(2) When the number of PTRS ports is 2, the number of SRS ports is 4, and the maximum number of supported transport layers is 2, no extra bits are used to indicate mapping of PTRS ports;

(3) When the number of PTRS ports is 1, the number of SRS ports is 4, and the maximum number of supported transport layers is 2, 1 bit is additionally introduced to indicate mapping of PTRS ports;

(4) When the number of PTRS ports is 2, the number of SRS ports is 4, and the maximum number of supported transport layers is 3, 1 bit is additionally introduced to indicate mapping of PTRS ports;

(5) When the number of PTRS ports is 2, the number of SRS ports is 4, and the maximum number of transmission layers supported is 4, 2 bits are additionally introduced to indicate mapping of PTRS ports.

Please refer to FIG. 3, which is a schematic flowchart of a method for transmitting a phase tracking reference signal according to an embodiment of the present disclosure. The phase tracking reference signal sending method is applied to a terminal, including:

Step 31: Acquire DMRS port information associated with the PTRS port in the uplink transmission using the CP-OFDM waveform;

Step 32: In the uplink transmission using the CP-OFDM waveform, the data of the PTRS port is sent on the DMRS port associated with the transmitting PTRS port.

In the embodiment of the present disclosure, the terminal can accurately learn the DMRS port associated with the PTRS port, and send the data of the PTRS port on the DMRS port associated with the PTRS port.

In the embodiment of the present disclosure, the DMRS port information associated with the PTRS port may be predefined by a protocol, or may be configured by a network device.

That is, the step of acquiring the DMRS port information associated with the PTRS port in the uplink transmission using the CP-OFDM waveform may include:

Receiving indication information sent by the network device, where the indication information is used to indicate DMRS port information associated with the PTRS port in the uplink transmission of the CP-OFDM waveform; or

Obtaining the protocol-predefined DMRS port information associated with the PTRS port in the uplink transmission using the CP-OFDM waveform.

The way the protocol is predefined is implicitly indicated. The way the network device is configured is in the display indication mode.

In some embodiments of the present disclosure, when the uplink transmission is based on non-codebook transmission, the protocol pre-defined uplink transmission in the CP-OFDM waveform, the demodulation reference signal DMRS port information associated with the PTRS port includes: The smallest or largest DMRS port of all DMRS ports corresponding to the PTRS port.

In some embodiments of the present disclosure, when the uplink transmission is based on a non-codebook transmission, the step of receiving the indication information sent by the network device may include:

Receiving, by the network device, the indication information that is sent when the PTRS ports corresponding to the at least two SRS resources are the same.

Specifically, the step of receiving the indication information that is sent by the network device when the PTRS ports corresponding to the at least two SRS resources are the same includes one of the following steps:

(1) the indication information transmitted by 1 bit when the number of PTRS ports is 1, and the number of DMRS ports of the network device is 2;

(2) When the number of PTRS ports is 1 or 2 and the number of DMRS ports is 4, the indication information transmitted by the network device by 2 bits is received.

In some other embodiments of the present disclosure, when the uplink transmission is based on a codebook, the step of receiving the indication information sent by the network device may include:

Receiving a correspondence between the DMRS port and the PTRS port sent by the network device through the TPMI and the TRI;

Receiving the indication information sent by the network device according to the TPMI and the TRI.

Uplink transmission is divided into three types: full coherent transmission, semi-coherent transmission, and non-coherent transmission. The manner in which the network device sends the indication information to the terminal is different for terminals that support different transmission types. The following is an example.

For a terminal supporting full coherent transmission, the step of receiving the indication information sent by the network device according to the TPMI and TRI includes one of the following steps:

(1) receiving, when the TRI is 2, the indication information that is sent by the network device by using one bit;

(2) When the TRI is 3 or 4, the indication information that the network device transmits by using 2 bits is received.

For a terminal supporting non-coherent or semi-coherent transmission, the step of receiving the indication information sent by the network device according to the TPMI and TRI includes at least one of the following steps:

(1) when the number of transmitting antennas Tx is 4, TRI is 2, TPMI is 1 or 4, and the number of PTRS ports is 1, receiving the indication information that the network device transmits by one bit;

(2) when the number of transmitting antennas Tx is 4, TRI is 3, TPMI is 0, 1 or 2, and the number of PTRS ports is 2, the indication information transmitted by the network device by 1 bit is received;

(3) When the number of transmitting antennas Tx is 4, TRI is 4, TPMI is 0, 1, or 2, and the number of PTRS ports is 2, the indication information transmitted by the network device by 2 bits is received.

In the foregoing embodiment of the present disclosure, the step of receiving the indication information sent by the network device includes:

Receiving the indication information that is sent by the network device by using a DCI.

Based on the same inventive concept, with reference to FIG. 4, an embodiment of the present disclosure further provides a network device 40, including:

The sending module 41 is configured to send, to the terminal, indication information, where the indication information is used to indicate the DMRS port information that is associated with the PTRS port in the uplink transmission that uses the CP-OFDM waveform.

In some embodiments of the present disclosure, when the uplink transmission is based on non-codebook transmission, the sending module 41 is configured to send, by using radio resource control RRC signaling, a correspondence between the sounding reference signal SRS resource and the PTRS port to the terminal; When the PTRS ports corresponding to the at least two SRS resources are the same, the indication information is sent to the terminal.

Optionally, the sending module 41 may include at least one of the following submodules:

a first sending submodule, configured to send the indication information to the terminal by using one bit when the number of PTRS ports is 1, and the number of DMRS ports is 2.

a second sending submodule, configured to send the indication information to the terminal when the number of PTRS ports is 2 and the number of DMRS ports is 2.

The third sending submodule is configured to send the indication information to the terminal by using 2 bits when the number of PTRS ports is 1 or 2. and the number of DMRS ports is 4.

In some other embodiments of the present disclosure, when the uplink transmission is based on a codebook, the sending module 41 is configured to send, by using a precoding matrix, a TPMI and a rank indication TRI, a correspondence between the PTRS port and the DMRS port to the terminal; The TPMI and the TRI send the indication information to the terminal.

Optionally, the sending module 41 may include:

The first processing submodule is configured to not send the indication information to the terminal when the TRI is 1.

For a terminal supporting full coherent transmission, the sending module 41 may include at least one of the following submodules:

a fourth sending submodule, configured to send the indication information to the terminal by using 1 bit when the TRI is 2;

And a fifth sending submodule, configured to send the indication information to the terminal by using 2 bits when the TRI is 3 or 4.

For a terminal supporting non-coherent or semi-coherent transmission, the sending module 41 may include at least one of the following submodules:

a second processing submodule, configured to: when the number of transmit antennas Tx is 2, TRI is 2, TPMI is 0, and the number of PTRS ports is 2, the indication information is not sent to the terminal;

The third processing submodule is configured to: when the number of transmit antennas Tx is 4, TRI is 2, TPMI is 0, 2, 3, 5, 6, 7, 8, 9, 10, 11, 12, or 13, and the number of PTRS ports When 2, the indication information is not sent to the terminal;

a sixth sending submodule, configured to send the indication information to the terminal by using one bit when the number of transmitting antennas Tx is 4, TRI is 2, TPMI is 1 or 4, and the number of PTRS ports is 1.

a seventh sending submodule, configured to send the indication information to the terminal by using 1 bit when the number of transmitting antennas Tx is 4, TRI is 3, TPMI is 0, 1 or 2, and the number of PTRS ports is 2.

The eighth sending submodule is configured to send the indication information to the terminal by using 2 bits when the number of transmitting antennas Tx is 4, TRI is 4, TPMI is 0, 1 or 2, and the number of PTRS ports is 2.

Optionally, the sending module 41 is configured to send the indication information to the terminal by using a DCI.

Optionally, the sending module 41 is configured to send a correspondence between the PTRS port and the DMRS port to the terminal by using the number of SRS ports, the number of PTRS ports, and the maximum number of supported transport layers.

Optionally, when the maximum number of supported transport layers is 1, no additional bits are used to indicate the mapping of the PTRS port.

Optionally, for a terminal supporting full coherent transmission, the sending module 41 may include at least one of the following submodules:

a ninth sending submodule, configured to send the indication information to the terminal by using one bit when the number of the PTRS ports is one and the maximum number of supported transport layers is two;

And a tenth sending submodule, configured to send the indication information to the terminal by using 2 bits when the number of the PTRS ports is 1 and the maximum number of supported transmission layers is 3 or 4.

Optionally, for a terminal supporting semi-coherent or non-coherent transmission, the sending module 41 may include at least one of the following sub-modules:

a fourth processing submodule, configured to: when the number of the PTRS ports is 2, the number of the SRS ports is 2, and the maximum number of supported transport layers is 2, the extra bits are not used to indicate the mapping of the PTRS ports. ;

a fifth processing submodule, configured to: when the number of the PTRS ports is 2, the number of the SRS ports is 4, and the maximum number of supported transport layers is 2, the extra bits are not used to indicate the mapping of the PTRS ports. ;

An eleventh sending submodule, configured to send the indication to the terminal by using one bit when the number of PTRS ports is 1, the number of SRS ports is 4, and the maximum number of supported transport layers is 2. information;

a twelfth transmitting submodule, configured to send the indication to the terminal by using 1 bit when the number of PTRS ports is 2, the number of SRS ports is 4, and the maximum number of supported transport layers is 3. information;

a thirteenth transmitting submodule, configured to send the indication to the terminal by using 2 bits when the number of the PTRS ports is 2, the number of the SRS ports is 4, and the maximum number of supported transport layers is 4. information.

Referring to FIG. 5, an embodiment of the present disclosure further provides a terminal 50, including:

An obtaining module 51, configured to acquire DMRS port information associated with a phase tracking reference signal PTRS port in an uplink transmission using a CP-OFDM waveform;

The sending module 52 is configured to send data of the PTRS port on the DMRS port associated with the sending PTRS port in an uplink transmission using a CP-OFDM waveform.

The obtaining module 51 is configured to receive indication information that is sent by the network device, where the indication information is used to indicate the DMRS port information that is associated with the PTRS port in the uplink transmission that uses the CP-OFDM waveform by the terminal; or

The obtaining module 51 is configured to obtain protocol pre-defined DMRS port information associated with the PTRS port in the uplink transmission using the CP-OFDM waveform.

In some embodiments of the present disclosure, when the uplink transmission is based on non-codebook transmission, the protocol pre-defined in the uplink transmission using the CP-OFDM waveform, the demodulation reference signal DMRS port information associated with the PTRS port includes: The port number of the smallest or largest DMRS port among all the DMRS ports corresponding to the PTRS port.

In some embodiments of the present disclosure, when the uplink transmission is based on a non-codebook transmission, the acquiring module 51 is configured to receive the indication sent by the network device when the PTRS ports corresponding to the at least two SRS resources are the same. information.

Optionally, the obtaining module 51 includes at least one of the following submodules:

a first receiving submodule, configured to: when the number of PTRS ports is 1, and the number of DMRS ports is 2, receive the indication information that is sent by the network device by using one bit;

The second receiving submodule is configured to receive the indication information that is sent by the network device by using two bits when the number of PTRS ports is 1 or 2. and the number of DMRS ports is 4.

In some embodiments of the present disclosure, when the uplink transmission is based on a codebook, the acquiring module 51 is configured to receive, by the network device, a DMRS port and a PTRS port corresponding to the TPMI and the rank indication TRI by using a precoding matrix. a relationship; receiving the indication information sent by the network device according to the TPMI and TRI.

For a terminal supporting full coherent transmission, the obtaining module 51 may include at least one of the following submodules:

a third receiving submodule, configured to receive, by the network device, the indication information sent by using one bit when the TRI is 2;

And a fourth receiving submodule, configured to receive, by the network device, the indication information sent by using 2 bits when the TRI is 3 or 4.

For a terminal supporting non-coherent or semi-coherent transmission, the acquisition module 51 may include at least one of the following sub-modules:

a fifth receiving submodule, configured to send the indication information by using one bit when the number of transmitting antennas Tx is 4, TRI is 2, TPMI is 1 or 4, when the network device is received, and the number of PTRS ports is 1.

a sixth receiving submodule, configured to receive the indication information that is sent by the network device by using one bit when the number of transmitting antennas Tx is 4, TRI is 3, TPMI is 0, 1, or 2, and the number of PTRS ports is 2. ;

a seventh receiving submodule, configured to receive, by the network device, the indication information sent by the network device when the number of transmitting antennas Tx is 4, the TRI is 4, the TPMI is 0, 1 or 2, and the number of PTRS ports is 2. .

Optionally, the obtaining module 51 is configured to receive the indication information that is sent by the network device by using a DCI.

Optionally, when the uplink transmission is based on the codebook, the acquiring module 51 is configured to receive a correspondence between the PTRS port and the DMRS port by using the number of SRS ports, the number of PTRS ports, and the maximum number of transmission layers supported.

Optionally, for a terminal supporting full coherent transmission, the obtaining module 51 may include at least one of the following submodules:

The eighth receiving submodule is configured to receive the indication information by using 1 bit when the number of the PTRS ports is 1 and the maximum number of supported transmission layers is 2.

And a ninth receiving submodule, configured to receive the indication information by 2 bits when the number of the PTRS ports is 1 and the supported maximum number of transmission layers is 3 or 4.

Optionally, for a terminal supporting semi-coherent or non-coherent transmission, the obtaining module 51 may include at least one of the following submodules:

a first processing submodule, configured to: when the number of the PTRS ports is 2, the number of the SRS ports is 2, and the maximum number of supported transport layers is 2, the extra bits are not used to indicate the mapping of the PTRS ports. ;

a second processing submodule, configured to: when the number of the PTRS ports is 2, the number of the SRS ports is 4, and the maximum number of supported transport layers is 2, the extra bits are not used to indicate the mapping of the PTRS ports. ;

a tenth receiving submodule, configured to: when the number of PTRS ports is 1, the number of SRS ports is 4, and the maximum number of supported transport layers is 2, the indication information is received by using 1 bit;

An eleventh receiving submodule, configured to receive the indication information by using 1 bit when the number of PTRS ports is 2, the number of the SRS ports is 4, and the maximum number of supported transmission layers is 3.

The twelfth receiving submodule is configured to receive the indication information by 2 bits when the number of the PTRS ports is 2, the number of the SRS ports is 4, and the maximum number of supported transmission layers is 4.

Embodiments of the present disclosure also provide a network device including a processor, a memory, and a computer program stored on the memory and executable on the processor, the computer program being implemented by the processor to implement the foregoing The phase tracking reference signal correlation indicating method in an embodiment.

Embodiments of the present disclosure also provide a terminal, including a processor, a memory, and a computer program stored on the memory and executable on the processor, the computer program being executed by the processor to implement any of the above The steps of the phase tracking reference signal transmitting method in the embodiment.

The embodiment of the present disclosure further provides a computer readable storage medium, where the computer readable storage medium stores a computer program, and when the computer program is executed by the processor, implements a phase tracking reference signal association indication in any of the embodiments. The steps of the method.

The embodiment of the present disclosure further provides a computer readable storage medium, where the computer readable storage medium stores a computer program, and when the computer program is executed by the processor, implements the phase tracking reference signal sending method in any of the embodiments. A step of.

The computer readable storage medium described above may be a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

FIG. 6 is a schematic diagram of a hardware structure of a mobile terminal that implements an embodiment of the present disclosure. The mobile terminal 60 includes, but is not limited to, a radio frequency unit 61, a network module 62, an audio output unit 63, an input unit 64, a sensor 65, and a display unit 66. The user input unit 67, the interface unit 68, the memory 69, the processor 610, and the power source 611 and the like. It will be understood by those skilled in the art that the mobile terminal structure shown in FIG. 6 does not constitute a limitation of the mobile terminal, and the mobile terminal may include more or less components than those illustrated, or combine some components, or different components. Arrangement. In the embodiments of the present disclosure, the mobile terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palmtop computer, an in-vehicle terminal, a wearable device, a pedometer, and the like.

The radio unit 61 or the processor 610 is configured to acquire DMRS port information associated with the phase tracking reference signal PTRS port in an uplink transmission using a CP-OFDM waveform;

The radio frequency unit 61 is configured to send data of the PTRS port on the DMRS port associated with the sending PTRS port in an uplink transmission using a CP-OFDM waveform.

In the embodiment of the present disclosure, the reference signal for CSI measurement is sent on the at least one second transmission resource, so that when the terminal switches between different transmission resources, the channel quality of the corresponding transmission resource can be obtained in time, and the transmission resource is avoided. The delay caused by switching increases system efficiency.

It should be understood that, in the embodiment of the present disclosure, the radio frequency unit 61 can be used for receiving and transmitting signals during and after receiving and receiving information or during a call, and specifically, receiving downlink data from the network device, and then processing the data to the processor 610; Send the uplink data to the network device. Typically, radio frequency unit 61 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 unit 61 can also communicate with the network and other devices through a wireless communication system.

The mobile terminal provides the user with wireless broadband Internet access through the network module 62, such as helping the user to send and receive emails, browse web pages, and access streaming media.

The audio output unit 63 can convert the audio data received by the radio frequency unit 61 or the network module 62 or stored in the memory 69 into an audio signal and output as sound. Moreover, the audio output unit 63 can also provide audio output (e.g., call signal reception sound, message reception sound, etc.) associated with a particular function performed by the mobile terminal 60. The audio output unit 63 includes a speaker, a buzzer, a receiver, and the like.

The input unit 64 is for receiving audio or time-frequency signals. The input unit 64 may include a graphics processing unit (GPU) 641 and a microphone 642 for a still picture or time-frequency obtained by an image capturing device (such as a camera) in a time-frequency capturing mode or an image capturing mode. The image data is processed. The processed image frame can be displayed on display unit 66. The image frames processed by the graphics processor 641 may be stored in the memory 69 (or other storage medium) or transmitted via the radio unit 61 or the network module 62. The microphone 642 can receive sound and can process such sound as audio data. The processed audio data can be converted to a format output that can be transmitted to the mobile communication network device via the radio unit 61 in the case of a telephone call mode.

The mobile terminal 60 also includes at least one type of sensor 65, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 661 according to the brightness of the ambient light, and the proximity sensor can close the display panel 661 when the mobile terminal 60 moves to the ear. / or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes). When it is stationary, it can detect the magnitude and direction of gravity. It can be used to identify the attitude of the mobile terminal (such as horizontal and vertical screen switching, related games). , magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; sensor 65 may also include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, Infrared sensors and the like are not described here.

The display unit 66 is for displaying information input by the user or information provided to the user. The display unit 66 may include a display panel 661. The display panel 661 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 67 can be used to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, the user input unit 67 includes a touch panel 671 and other input devices 672. The touch panel 671, also referred to as a touch screen, can collect touch operations on or near the user (such as the user using a finger, a stylus, or the like on the touch panel 671 or near the touch panel 671. operating). The touch panel 671 can include two parts of a touch detection device and a touch controller. Wherein, the touch detection device detects the touch orientation of the user, and detects a signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts the touch information into contact coordinates, and sends the touch information. The processor 610 receives the commands from the processor 610 and executes them. In addition, the touch panel 671 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch panel 671, the user input unit 67 may also include other input devices 672. Specifically, the other input devices 672 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, and joysticks, and are not described herein again.

Further, the touch panel 671 can be overlaid on the display panel 661. When the touch panel 671 detects a touch operation on or near the touch panel 671, it is transmitted to the processor 610 to determine the type of the touch event, and then the processor 610 according to the touch. The type of event provides a corresponding visual output on display panel 661. Although the touch panel 671 and the display panel 661 are used as two independent components to implement the input and output functions of the mobile terminal in FIG. 6, in some embodiments, the touch panel 671 can be integrated with the display panel 661. The input and output functions of the mobile terminal are implemented, and are not limited herein.

The interface unit 68 is an interface in which an external device is connected to the mobile terminal 60. 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 having an identification module, and an audio input/output. (I/O) port, time-frequency I/O port, headphone port, and more. Interface unit 68 may be operable to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more components within mobile terminal 60 or may be used at mobile terminal 60 and externally. Data is transferred between devices.

Memory 69 can be used to store software programs as well as various data. The memory 69 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may be stored according to Data created by the use of the mobile phone (such as audio data, phone book, etc.). Moreover, memory 69 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

Processor 610 is the control center of the mobile terminal, connecting various portions of the entire mobile terminal using various interfaces and lines, by running or executing software programs and/or modules stored in memory 69, and recalling data stored in memory 69. The mobile terminal performs various functions and processing data to perform overall monitoring on the mobile terminal. The processor 610 may include one or more processing units; preferably, the processor 610 may integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, an application, etc., and performs modulation and demodulation. The processor primarily handles wireless communications. It can be understood that the above modem processor may not be integrated into the processor 610.

The mobile terminal 60 may also include a power source 611 (such as a battery) that supplies power to the various components. Preferably, the power source 611 may be logically coupled to the processor 610 through a power management system to manage charging, discharging, and power management through the power management system. And other functions.

In addition, the mobile terminal 60 includes some functional modules not shown, and details are not described herein again.

It is to be understood that the term "comprises", "comprising", or any other variants thereof, is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes those elements. It also includes other elements that are not explicitly listed, or elements that are inherent to such a process, method, article, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

Through the description of the above embodiments, those skilled in the art can clearly understand that the foregoing embodiment method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is better. Implementation. Based on such understanding, portions of the technical solutions of the present disclosure that contribute substantially or to the prior art may be embodied in the form of a software product stored in a storage medium (eg, ROM/RAM, disk, The optical disc includes a number of instructions for causing a terminal (which may be a cell phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the methods described in various embodiments of the present disclosure.

The embodiments of the present disclosure have been described above with reference to the drawings, but the present disclosure is not limited to the specific embodiments described above, and the specific embodiments described above are merely illustrative and not restrictive, and those skilled in the art In the light of the present disclosure, many forms may be made without departing from the scope of the disclosure and the scope of the appended claims.

Claims

A phase tracking reference signal PTRS association indication method is applied to a network device, and the method includes:

Sending indication information to the terminal, the indication information is used to indicate demodulation reference signal DMRS port information associated with the PTRS port in the uplink transmission of the CP-OFDM waveform using the cyclic prefix-orthogonal frequency division multiplexing technology.
The method according to claim 1, wherein when the uplink transmission is based on non-codebook transmission, the step of transmitting the indication information to the terminal comprises:

When the PTRS ports corresponding to the at least two sounding reference signal SRS resources are the same, the indication information is sent to the terminal.
The method according to claim 2, wherein when the PTRS ports corresponding to the at least two SRS resources are the same, the step of transmitting the indication information to the terminal comprises one of the following steps:

When the number of PTRS ports is 1, and the number of DMRS ports is 2, the indication information is sent to the terminal by using 1 bit;

When the number of PTRS ports is 2 and the number of DMRS ports is 2, the indication information is not sent to the terminal;

When the number of PTRS ports is 1 or 2 and the number of DMRS ports is 4, the indication information is sent to the terminal by 2 bits.
The method according to any one of claims 1 to 3, wherein, when the uplink transmission is based on a codebook, the step of transmitting the indication information to the terminal comprises:

Transmitting, by the precoding matrix, the TPMI and the rank indication TRI, the correspondence between the PTRS port and the DMRS port to the terminal;

And transmitting the indication information to the terminal according to the TPMI and the TRI.
The method of claim 4, wherein the step of transmitting the indication information to the terminal according to the TPMI and TRI comprises:

When the TRI is 1, the indication information is not sent to the terminal.
The method of claim 4, wherein for the terminal supporting the coherent transmission, the step of transmitting the indication information to the terminal according to the TPMI and TRI comprises at least one of the following steps:

When the TRI is 2, the indication information is sent to the terminal by using 1 bit;

When the TRI is 3 or 4, the indication information is transmitted to the terminal by 2 bits.
The method of claim 4, wherein for the terminal supporting non-coherent or semi-coherent transmission, the step of transmitting the indication information to the terminal according to the TPMI and TRI comprises one of the following steps:

When the number of transmit antennas Tx is 2, TRI is 2, TPMI is 0, and the number of PTRS ports is 2, the indication information is not sent to the terminal;

When the number of transmitting antennas Tx is 4, TRI is 2, TPMI is 0, 2, 3, 5, 6, 7, 8, 9, 10, 11, 12, or 13, and the number of PTRS ports is 2, Sending, by the terminal, the indication information;

When the number of transmit antennas Tx is 4, TRI is 2, TPMI is 1 or 4, and the number of PTRS ports is 1, the indication information is sent to the terminal by 1 bit;

When the number of transmit antennas Tx is 4, TRI is 3, TPMI is 0, 1, or 2, and the number of PTRS ports is 2, the indication information is sent to the terminal by 1 bit;

When the number of transmitting antennas Tx is 4, TRI is 4, TPMI is 0, 1, or 2, and the number of PTRS ports is 2, the indication information is transmitted to the terminal by 2 bits.
The method according to any one of claims 1 to 7, wherein when the uplink transmission is based on a codebook, the step of transmitting the indication information to the terminal comprises:

Corresponding relationship between the PTRS port and the DMRS port is sent to the terminal by the number of SRS ports, the number of PTRS ports, and the maximum number of supported transport layers.
The method of claim 8, wherein when the number of supported maximum transmission layers is 1, no additional bits are used to indicate mapping of the PTRS port.
The method according to claim 8, wherein for the terminal supporting the coherent transmission, the correspondence between the PTRS port and the DMRS port is sent to the terminal according to the number of the SRS ports and the supported maximum number of transmission layers The step of transmitting the indication information to the terminal includes at least one of the following steps:

When the number of the PTRS ports is 1, and the maximum number of supported transport layers is 2, the indication information is sent to the terminal by using 1 bit;

When the number of PTRS ports is 1 and the maximum number of supported transport layers is 3 or 4, the indication information is sent to the terminal by 2 bits.
The method according to claim 8, wherein, for a terminal supporting semi-coherent or non-coherent transmission, said to said terminal according to said number of SRS ports, said number of PTRS ports, and said maximum number of supported transmission layers Sending the correspondence between the PTRS port and the DMRS port, and the step of sending the indication information to the terminal includes at least one of the following steps:

When the number of PTRS ports is 2, the number of SRS ports is 2, and the maximum number of supported transport layers is 2, no extra bits are used to indicate mapping of the PTRS ports;

When the number of PTRS ports is 2, the number of SRS ports is 4, and the maximum number of supported transport layers is 2, no extra bits are used to indicate mapping of the PTRS ports;

When the number of PTRS ports is 1, the number of SRS ports is 4, and the maximum number of supported transport layers is 2, the indication information is sent to the terminal by using 1 bit;

When the number of PTRS ports is 2, the number of SRS ports is 4, and the maximum number of supported transport layers is 3, the indication information is sent to the terminal by using 1 bit;

When the number of PTRS ports is 2, the number of SRS ports is 4, and the maximum number of supported transport layers is 4, the indication information is sent to the terminal by 2 bits.
The method according to any one of claims 1 to 11, wherein the step of transmitting the indication information to the terminal comprises:

The indication information is sent to the terminal by using downlink control information DCI.
A method for transmitting a phase tracking reference signal PTRS is applied to a terminal, and the method includes:

Obtaining demodulation reference signal DMRS port information associated with a PTRS port in an uplink transmission using a cyclic prefix-orthogonal frequency division multiplexing (CP-OFDM) waveform;

Transmitting data of the PTRS port on the DMRS port associated with the transmitting PTRS port.
The method of claim 13 wherein said step of obtaining DMRS port information associated with a PTRS port in an uplink transmission employing a CP-OFDM waveform comprises:

Receiving indication information sent by the network device, where the indication information is used to indicate DMRS port information associated with the PTRS port in the uplink transmission of the CP-OFDM waveform; or

Obtain the protocol-predefined DMRS port information associated with the PTRS port in the uplink transmission using the CP-OFDM waveform.
The method according to claim 14, wherein when the uplink transmission is based on non-codebook transmission, the protocol pre-defined uplink transmission in the CP-OFDM waveform, the demodulation reference signal DMRS port information associated with the PTRS port includes : the smallest or largest DMRS port of all DMRS ports corresponding to the PTRS port.
The method of claim 14, wherein the step of receiving the indication information sent by the network device when the uplink transmission is based on a non-codebook transmission comprises:

Receiving, by the network device, the indication information that is sent when the PTRS ports corresponding to the at least two sounding reference signal SRS resources are the same.
The method according to claim 16, wherein the step of receiving the indication information that is sent by the network device when the PTRS ports corresponding to the at least two SRS resources are the same includes one of the following steps:

When the number of PTRS ports is 1, and the number of DMRS ports is 2, the indication information sent by the network device by using 1 bit is received;

When the number of PTRS ports is 1 or 2 and the number of DMRS ports is 4, the indication information sent by the network device through 2 bits is received.
The method according to any one of claims 13 to 17, wherein, when the uplink transmission is based on a codebook, the step of receiving the indication information sent by the network device comprises:

Receiving, by the network device, a correspondence between a DMRS port and a PTRS port sent by the TPMI and the rank indication TRI through a precoding matrix;

Receiving the indication information sent by the network device according to the TPMI and the TRI.
The method of claim 18, wherein for the terminal supporting full coherent transmission, the step of receiving the indication information sent by the network device according to the TPMI and TRI comprises one of the following steps:

Receiving, by the network device, the indication information sent by 1 bit when the TRI is 2;

When the TRI is 3 or 4, the indication information sent by the network device by using 2 bits is received.
The method of claim 18, wherein for the terminal supporting the non-coherent or semi-coherent transmission, the step of receiving the indication information sent by the network device according to the TPMI and TRI comprises one of the following steps:

When the number of transmit antennas Tx is 4, TRI is 2, TPMI is 1 or 4, and the number of PTRS ports is 1, the indication information sent by the network device by using 1 bit is received;

When the number of transmit antennas Tx is 4, TRI is 3, TPMI is 0, 1, or 2, and the number of PTRS ports is 2, the indication information sent by the network device by using 1 bit is received;

When the number of transmitting antennas Tx is 4, TRI is 4, TPMI is 0, 1, or 2, and the number of PTRS ports is 2, the indication information transmitted by the network device through 2 bits is received.
The method according to any one of claims 13 to 20, wherein, when the uplink transmission is based on a codebook, the step of receiving the indication information sent by the network device comprises:

The correspondence between the PTRS port and the DMRS port is received through the number of SRS ports, the number of PTRS ports, and the maximum number of supported transport layers.
The method of claim 21, wherein when the number of supported maximum transmission layers is 1, no additional bits are used to indicate mapping of the PTRS port.
The method according to claim 21, wherein for a terminal supporting full coherent transmission, the correspondence between the PTRS port and the DMRS port is sent to the terminal according to the number of the SRS ports and the supported maximum number of transmission layers The step of receiving the indication information sent by the network device includes at least one of the following steps:

When the number of PTRS ports is 1 and the maximum number of supported transport layers is 2, the indication information is received by 1 bit;

When the number of PTRS ports is 1 and the maximum number of supported transport layers is 3 or 4, the indication information is received by 2 bits.
The method according to claim 21, wherein, for a terminal supporting semi-coherent or non-coherent transmission, said to said terminal according to said number of SRS ports, said number of PTRS ports, and said maximum number of supported transmission layers Sending the correspondence between the PTRS port and the DMRS port, and receiving the indication information sent by the network device includes at least one of the following steps:

When the number of PTRS ports is 2, the number of SRS ports is 2, and the maximum number of supported transport layers is 2, no extra bits are used to indicate mapping of the PTRS ports;

When the number of PTRS ports is 2, the number of SRS ports is 4, and the maximum number of supported transport layers is 2, no extra bits are used to indicate mapping of the PTRS ports;

When the number of PTRS ports is 1, the number of SRS ports is 4, and the maximum number of supported transport layers is 2, the indication information is received by 1 bit;

When the number of PTRS ports is 2, the number of SRS ports is 4, and the maximum number of supported transport layers is 3, the indication information is received by 1 bit;

When the number of PTRS ports is 2, the number of SRS ports is 4, and the maximum number of supported transport layers is 4, the indication information is received by 2 bits.
The method according to any one of claims 13 to 24, wherein the step of receiving the indication information sent by the network device comprises:

Receiving the indication information that is sent by the network device by using downlink control information DCI.
A network device, including:

a sending module, configured to send, to the terminal, the indication information, where the indication information is used to indicate that the terminal is associated with a phase tracking reference signal PTRS port in an uplink transmission using a cyclic prefix-orthogonal frequency division multiplexing (PC-OFDM) waveform Demodulation reference signal DMRS port information.
A terminal comprising:

An obtaining module, configured to obtain demodulation reference signal DMRS port information associated with a phase tracking reference signal PTRS port in an uplink transmission using a cyclic prefix-orthogonal frequency division multiplexing (CP-OFDM) waveform; and

And a sending module, configured to send data of the PTRS port on the DMRS port that is associated with the sending PTRS port.
A network device comprising a processor, a memory, and a computer program stored on the memory and operable on the processor, the computer program being executed by the processor to implement any of claims 1 to 12 A phase tracking reference signal associated with the step of indicating the method.
A terminal comprising a processor, a memory, and a computer program stored on the memory and operable on the processor, the computer program being executed by the processor to implement any one of claims 13 to 25 The step of the phase tracking reference signal transmission method described in the item.
A computer readable storage medium having stored thereon a computer program, the computer program being executed by a processor to implement phase tracking reference signal correlation as claimed in any one of claims 1 to 12. The step of indicating a method, or the step of implementing the phase tracking reference signal transmitting method according to any one of claims 13 to 25 when the computer program is executed by a processor.