CN108631987B

CN108631987B - Method and device for processing reference signal

Info

Publication number: CN108631987B
Application number: CN201710184627.0A
Authority: CN
Inventors: 梅猛; 蒋创新; 鲁照华; 陈艺戬; 张淑娟; 弓宇宏
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2017-03-24
Filing date: 2017-03-24
Publication date: 2022-05-17
Anticipated expiration: 2037-03-24
Also published as: WO2018171800A1; CN108631987A

Abstract

The invention provides a method and a device for processing a reference signal, which comprise the following steps: the first communication node is configured to a second communication node phase tracking reference signal resource set; the first communication node indicates the use condition of each resource in the phase tracking reference signal resource set through the distribution condition of the demodulation reference signal resource; wherein the reference signal resource comprises at least one of the following parameters: port number, port serial number, time domain density, frequency domain density, pattern, and multiplexing mode among ports. The invention solves the technical problem that the corresponding phase tracking reference signal can not be designed aiming at the specific information of the demodulation reference signal in the related technology.

Description

Method and device for processing reference signal

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for processing a reference signal.

Background

With the continuous discussion and evolution of New Radio (NR) technology, the utilization of high frequency band also becomes the important research field of NR technology, and with the application of multi-beam forming, the multi-user multiplexing scenario also becomes the important research field. Because the capability of data demodulation greatly affects the output transmission quality of multiple users, the design of reference signals related to demodulation also affects the capability of data demodulation to a great extent, and because the factors which seriously affect the data demodulation, such as phase noise or Doppler frequency domain, exist in different degrees in the high frequency band, the compensation of the phase noise or Doppler frequency domain is also the important research point of the high frequency band.

The 3GPP conference has already performed phase noise compensation by using a phase tracking reference signal, and there is a versatile and flexibly designed phase tracking reference signal pattern design. But currently, 3GPP conference passes the design of demodulation reference signals with more ports, and there is more flexibility in the design of the demodulation reference signals, how to design corresponding phase tracking reference signals for demodulation reference signals with more ports in order to achieve more compensation for demodulation reference signal phase noise?

The patterns of the phase tracking reference signals of the single-user scene and the multi-user multiplexed scene are different to a certain extent, and the design of the multi-user scene phase tracking reference signals needs to consider the interference influence of other corresponding users. In a multi-user scenario, the base station needs to allocate different phase tracking reference signal resources to different users according to the requirements of different phase tracking reference signals of different users;

in the case of multiple columns of demodulation reference signals that may exist in the demodulation reference signal pattern design, what kind of correspondence the phase tracking reference signal should take with the demodulation reference signal should be. Also, in the face of more demodulation reference signal ports, how the overhead of the phase tracking reference signal should be controlled.

In view of the above problems in the related art, no effective solution has been found at present.

Disclosure of Invention

The embodiment of the invention provides a reference signal processing method and a reference signal processing device, which at least solve the technical problem that a corresponding phase tracking reference signal cannot be designed aiming at specific information of a demodulation reference signal in the related art.

According to an embodiment of the present invention, there is provided a method for processing a reference signal, including: the first communication node indicates the first subset of the phase tracking reference signal resources using the first subset of the demodulation reference signal resources and indicates the mth subset of the phase tracking reference signal resources using the mth subset of the demodulation reference signal resources, wherein the demodulation reference signal resources include M subsets, and the M subsets of the demodulation reference signal resources are transmitted in a frequency domain of each subset of the phase tracking reference signal resources.

Optionally, the ports of the M subsets of demodulation reference signal resources are code division multiplexed or time division multiplexed in the time domain, and the ports of the M subsets of phase tracking reference signal resources are frequency division multiplexed.

Optionally, when the ports of the M subsets of demodulation reference signal resources are time-division multiplexed in the time domain, the ports of the M subsets of demodulation reference signal resources occupy different time domain symbols.

Optionally, different second communication nodes correspond to the phase tracking reference signals of different port numbers.

Optionally, the time-domain frequency-domain density of each phase tracking reference signal or each group of phase tracking reference signals within the set of phase tracking reference signal resources is configured by the first communication node.

According to an embodiment of the present invention, there is provided another method for processing a reference signal, including: the first communication node is configured to a second communication node phase tracking reference signal resource set; the first communication node indicates the use condition of each resource in the phase tracking reference signal resource set through the distribution condition of demodulation reference signal resources; wherein the reference signal resource comprises at least one of the following parameters: port number, port serial number, time domain density, frequency domain density, pattern, and multiplexing mode among ports.

Optionally, the first communication node transmits or receives data on phase tracking reference signal resources outside the set of phase tracking reference signal resources.

Optionally, the first communication node transmits no signal or a zero-power reference signal on a phase tracking reference signal resource outside the set of phase tracking reference signal resources.

Optionally, when the number of ports of the demodulation reference signal resource is greater than a first threshold, the set of phase tracking reference signal resources is not enabled, or when the number of ports of the demodulation reference signal resource is less than a second threshold, the set of phase tracking reference signal resources is enabled.

Optionally, when the phase tracking reference signal resource set is enabled, the first communication node notifies, by using an indication signaling of the demodulation reference signal resource, a second communication node of a transmission resource of a corresponding non-zero power phase tracking reference signal in the phase tracking reference signal resource set.

Optionally, the first communication node transmits only non-zero power and zero power phase tracking reference signals within the set of phase tracking reference signal resources.

Optionally, the first communication node configures a plurality of sets of phase tracking reference signal resources to the second communication node, including: the first communication node informs the second communication node of the location of the set of phase tracking reference signal resources using dynamic signaling of at least one of: quasi co-location QCL indication information, scrambling sequence, physical layer dynamic signaling.

Optionally, the first communication node configures to a second communication node, where the number P of ports included in the phase tracking reference signal resource set is used, where the P value is the number of ports using a phase tracking reference signal, or the P value is a ratio of the number of ports using a phase tracking reference signal to the number of ports using a demodulation reference signal, and M is an integer greater than or equal to 1.

Optionally, the phase tracking reference signal resource set includes: a predefined resource configuration.

Optionally, the phase tracking reference signal resource set is mapped to different resource sets by the first communication node in a bitmap mode.

According to an embodiment of the present invention, there is provided a method for processing a reference signal, wherein the phase tracking reference signal hops over different resources, and the resources include at least one of: time unit, frequency domain unit, port and precoding mode.

Optionally, the phase tracking reference signal resources hop over different time units or frequency domain units.

Optionally, the relative position of the pattern of the phase tracking reference signal is associated with a sequence number of a time unit or a frequency domain unit.

Optionally, when N demodulation reference signal ports are associated with one phase tracking reference signal port, N precoding modes of the phase tracking reference signal are provided, where N is greater than or equal to 1; the first communication node respectively configures corresponding relations of demodulation reference signals and phase tracking reference signals for different time units or different frequency domain units; the correspondence between the ports of the phase tracking reference signal and the demodulation reference signal port means that the phase tracking reference signal port and the demodulation reference signal port use the same precoding, and the correspondence between the ports of the phase tracking reference signal and the demodulation reference signal port is related to the sequence number of the time unit or the frequency domain unit.

Optionally, the rules for phase tracking reference signal resource hopping are different for different first communication nodes or second communication nodes.

According to an embodiment of the present invention, there is provided a method for processing a reference signal, including: a second communication node receives a phase tracking reference signal resource set configured by a first communication node; the second communication node receives an indication of the use condition of each resource in the phase tracking reference signal resource set by the first communication node through the distribution condition of demodulation reference signal resources; wherein the reference signal resource comprises at least one of the following parameters: port number, port serial number, time domain density, frequency domain density, pattern, and multiplexing mode among ports.

According to another embodiment of the present invention, there is provided a reference signal processing apparatus, applied to a first communication node, including: a configuration module configured to configure a set of phase tracking reference signal resources for a second communication node; an indicating module, configured to indicate a usage condition of each resource in the phase tracking reference signal resource set according to an allocation condition of demodulation reference signal resources; wherein the reference signal resource comprises at least one of the following parameters: port number, port serial number, time domain density, frequency domain density, pattern, and multiplexing mode among ports.

According to another embodiment of the present invention, another apparatus for processing a reference signal is provided, which is applied to a first communication node, and includes: an indication module to indicate the first subset of the phase tracking reference signal resources using the first subset of the demodulation reference signal resources and to indicate the mth subset of the phase tracking reference signal resources using the mth subset of the demodulation reference signal resources; wherein the demodulation reference signal resources comprise M subsets, and the M subsets of the demodulation reference signal resources are transmitted in the frequency domain range of each subset of the phase tracking reference signal resources.

According to another embodiment of the present invention, there is provided another apparatus for processing a reference signal, which is applied to a second communication node, and includes: a first receiving module, configured to receive a set of phase tracking reference signal resources configured by a first communication node; a second receiving module, configured to receive an indication of a usage of each resource in the set of phase tracking reference signal resources by the first communication node according to an allocation of demodulation reference signal resources; wherein the reference signal resource comprises at least one of the following parameters: port number, port serial number, time domain density, frequency domain density, pattern, and multiplexing mode among ports.

According to still another embodiment of the present invention, there is also provided a storage medium. The storage medium is configured to store program code for performing the steps of:

allocating a set of phase tracking reference signal resources to the second communication node;

indicating the use condition of each resource in the phase tracking reference signal resource set through the allocation condition of the demodulation reference signal resource.

According to the invention, a first communication node is configured to a second communication node phase tracking reference signal resource set; the first communication node indicates the use condition of each resource in the phase tracking reference signal resource set through the distribution condition of demodulation reference signal resources; wherein the demodulation reference signal resources comprise at least one of the following parameters: the multiplexing mode among the port number, the port serial number, the time domain density, the frequency domain density, the pattern and the ports solves the technical problem that a corresponding phase tracking reference signal cannot be designed aiming at specific information of a demodulation reference signal in the related technology.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and do not constitute a limitation of the invention. In the drawings:

fig. 1 is a flow chart of a reference signal processing method according to an embodiment of the present invention;

fig. 2 is a flow chart of another reference signal processing method according to an embodiment of the present invention;

fig. 3 is a block diagram of a reference signal processing apparatus according to an embodiment of the present invention;

fig. 4 is a block diagram of another reference signal processing apparatus according to an embodiment of the present invention;

FIG. 5a is a diagram illustrating the absence of a zero power phase tracking reference signal pattern according to an embodiment of the present invention;

FIG. 5b is a diagram illustrating a zero power phase tracking reference signal pattern according to an embodiment of the present invention;

FIG. 5c is a mapping of phase tracking reference signals for different subsets according to an embodiment of the present invention;

FIG. 5d is a port set diagram of a phase tracking reference signal according to an embodiment of the present invention;

FIG. 5e is a schematic diagram of a phase tracking reference signal pattern with different densities according to an embodiment of the present invention;

FIG. 6 is a diagram illustrating PTRS resource usage outside of a set of PTRS resources according to an embodiment of the present invention;

FIG. 7 is a PTRS port subset cross-map according to an embodiment of the present invention;

fig. 8 is a PTRS pattern corresponding to a DMRS for code division multiplexing according to an embodiment of the present invention;

fig. 9 is a PTRS pattern when DMRSs of two terminals are pseudo-orthogonal according to an embodiment of the present invention;

FIG. 10a is a PTRS pattern a for non-port set indication according to an embodiment of the present invention;

FIG. 10b is a PTRS pattern b of a non-port set indication according to an embodiment of the present invention;

FIG. 11 is a phase tracking reference signal pattern of varying density for an embodiment of the present invention;

FIG. 12 is a PTRS pattern for a pseudo-orthogonal terminal according to an embodiment of the present invention;

fig. 13 is a PTRS pattern of the terminal 1 according to the embodiment of the present invention;

FIG. 14a is a PTRS pattern a of an embodiment of the invention;

FIG. 14b is a PTRS pattern b of an embodiment of the invention;

fig. 15 is a PTRS pattern corresponding to multiple columns of DMRS according to an embodiment of the present invention;

fig. 16 is a pattern corresponding to a DMRS for an orthogonal port in embodiment 12 of the present invention;

FIG. 17a is a PTRS pattern occupying 7 time domain symbols per subframe according to an embodiment of the present invention;

fig. 17b is a PTRS pattern with 12 subcarriers not occupied by DMRS within each PRB according to an embodiment of the present invention;

FIG. 18 is a diagram of 8 ports each for a reference signal in accordance with an embodiment of the present invention;

FIG. 18a is a phase tracking reference signal port number diagram of an embodiment of the present invention;

FIG. 19 is a diagram of 4 phase tracking reference signal port numbers according to an embodiment of the present invention;

FIG. 20 is a diagram illustrating a port of a phase tracking reference signal corresponding to different demodulation reference signal ports at different time units according to an embodiment of the present invention;

FIG. 21 is a diagram of hopping across different slots or subbands according to an embodiment of the present invention.

Detailed Description

The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Example 1

In this embodiment, a method for processing a reference signal is provided, and fig. 1 is a flowchart of a method for processing a reference signal according to an embodiment of the present invention, as shown in fig. 1, the flowchart includes the following steps:

step S102, a first communication node is configured to a second communication node phase tracking reference signal resource set; and may specifically be configured through higher layer signaling.

Step S104, the first communication node indicates the use condition of each resource in the phase tracking reference signal resource set through the distribution condition of the demodulation reference signal resource.

Wherein the reference signal resource comprises at least one of the following parameters: port number, port serial number, time domain density, frequency domain density, pattern, and multiplexing mode among ports. The reference signal resources include phase tracking reference signal resources and demodulation reference signal resources.

Through the steps, the first communication node is configured to the second communication node phase tracking reference signal resource set; the first communication node indicates the use condition of each resource in the phase tracking reference signal resource set through the distribution condition of demodulation reference signal resources; wherein the demodulation reference signal resources comprise at least one of the following parameters: the multiplexing mode among the port number, the port serial number, the time domain density, the frequency domain density, the pattern and the ports solves the technical problem that a corresponding phase tracking reference signal cannot be designed aiming at specific information of a demodulation reference signal in the related technology.

In this embodiment, another reference signal processing method is provided, and fig. 2 is a flowchart of another reference signal processing method according to an embodiment of the present invention, as shown in fig. 2, the flowchart includes the following steps:

step S202, a second communication node receives a phase tracking reference signal resource set configured by a first communication node;

step S204, the second communication node receives the indication of the first communication node on the use condition of each resource in the phase tracking reference signal resource set through the distribution condition of the demodulation reference signal resource;

wherein the reference signal resource comprises at least one of the following parameters: port number, port serial number, time domain density, frequency domain density, pattern, and multiplexing mode among ports.

The phase tracking reference signal in the present embodiment may also be referred to as a phase noise reference signal, or a reference signal for phase tracking or phase compensation.

The present embodiment further provides another method for processing a reference signal, including:

the first communication node indicates the first subset of the phase tracking reference signal resources using the first subset of the demodulation reference signal resources and indicates the mth subset of the phase tracking reference signal resources using the mth subset of the demodulation reference signal resources, wherein the demodulation reference signal resources include M subsets, and the M subsets of the demodulation reference signal resources are transmitted in a frequency domain of each subset of the phase tracking reference signal resources. M is a positive integer.

Optionally, the ports of the M subsets of demodulation reference signal resources are code division multiplexed or time division multiplexed in the time domain, and the ports of the M subsets of phase tracking reference signal resources are frequency division multiplexed. Optionally, when the ports of the M subsets of the demodulation reference signal resources are time-division multiplexed in the time domain, the ports of the M subsets of the demodulation reference signal resources occupy different time-domain symbols.

Alternatively, different second communication nodes may correspond to phase tracking reference signals of different port numbers.

Alternatively, the main body of the above steps may be a base station, etc., but is not limited thereto.

Optionally, the first communication node transmits or receives data on a phase tracking reference signal resource outside the set of phase tracking reference signal resources. The first communication node transmits no signal, or a zero power reference signal, on a phase tracking reference signal resource outside the set of phase tracking reference signal resources.

In an optional implementation manner according to this embodiment, when the number of ports of the demodulation reference signal resource is greater than the first threshold, the phase tracking reference signal resource set is not enabled, or when the number of ports of the demodulation reference signal resource is less than the second threshold, the phase tracking reference signal resource set is enabled.

In an optional implementation manner according to this embodiment, when the phase tracking reference signal resource set is enabled, the first communication node uses indication signaling of the demodulation reference signal resource to notify a second communication node of a transmission resource of a corresponding non-zero power phase tracking reference signal in the phase tracking reference signal resource set.

Optionally, the first communication node configures to a number P of ports included in a phase tracking reference signal resource set of the second communication node, where the value of P is the number of ports using a phase tracking reference signal, or the value of P is a proportional value of the number of ports using a phase tracking reference signal and the number of ports using a demodulation reference signal, M is an integer greater than or equal to 1, and if the number of ports using a demodulation reference signal is 8, if the value of P is configured to 1/2, the number of ports using a phase tracking reference signal is 4.

Optionally, the time-domain frequency-domain density of each phase tracking reference signal or each group of phase tracking reference signals within the set of phase tracking reference signal resources is configurable, such as the first communication node configuration.

Optionally, the phase tracking reference signal resource set is mapped to different resource sets by the first communication node in a bitmap manner.

The present embodiment further provides a method for processing a reference signal, including: the phase tracking reference signals hop over different resources, wherein the resources comprise at least one of: time unit, frequency domain unit, port and precoding mode.

Optionally, the relative position of the pattern of the phase tracking reference signal is associated with the sequence number of the time unit or the frequency domain unit. The rules for hopping of the phase tracking reference signal resource are different for different first communication nodes or second communication nodes.

In an optional implementation manner according to this embodiment, when N demodulation reference signal ports are associated with one phase tracking reference signal port, N precoding manners of the phase tracking reference signal are available, where N is greater than or equal to 1; the first communication node respectively configures corresponding relations of demodulation reference signals and phase tracking reference signals for different time units or different frequency domain units; the correspondence between the ports of the phase tracking reference signal and the demodulation reference signal port means that the phase tracking reference signal port and the demodulation reference signal port use the same precoding, and the correspondence between the ports of the phase tracking reference signal and the demodulation reference signal port is related to the sequence number of the time unit or the frequency domain unit.

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

Example 2

In this embodiment, a device for processing a reference signal is further provided, and the device is used to implement the foregoing embodiments and preferred embodiments, and details of which have been already described are not described again. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.

Fig. 3 is a block diagram of a reference signal processing apparatus according to an embodiment of the present invention, applied to a first communication node, as shown in fig. 3, the apparatus includes:

a configuration module 30, configured to configure a set of phase tracking reference signal resources for a second communication node;

an indicating module 32, configured to indicate a usage of each resource in the phase tracking reference signal resource set according to an allocation of the demodulation reference signal resource;

The embodiment further provides another reference signal processing apparatus, applied to a first communication node, including: an indication module to indicate the first subset of the phase tracking reference signal resources using the first subset of the demodulation reference signal resources and to indicate the Mth subset of the phase tracking reference signal resources using the Mth subset of the demodulation reference signal resources. Wherein the demodulation reference signal resources comprise M subsets, and the M subsets of the demodulation reference signal resources are transmitted in the frequency domain range of each subset of the phase tracking reference signal resources.

Fig. 4 is a block diagram of another reference signal processing apparatus according to an embodiment of the present invention, as shown in fig. 4, the apparatus includes:

a first receiving module 40, configured to receive a set of phase tracking reference signal resources configured by a first communication node;

a second receiving module 42, configured to receive an indication of a usage of each resource in the phase tracking reference signal resource set by the first communication node through an allocation of demodulation reference signal resources;

Optionally, the first communication node transmits or receives data on a phase tracking reference signal resource outside the set of phase tracking reference signal resources.

Optionally, different second communication nodes correspond to phase tracking reference signals with different port serial numbers.

Optionally, when the number of ports of the demodulation reference signal resource is greater than the first threshold, the phase tracking reference signal resource set is not enabled, or when the number of ports of the demodulation reference signal resource is less than the second threshold, the phase tracking reference signal resource set is enabled.

It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in different processors in any combination.

Example 3

The embodiment provides a method and a device for designing a phase tracking reference signal, which relate to contents such as various resource sets, patterns, time-frequency domain density, multiplexing modes of ports, port number threshold values and the like of the phase tracking reference signal, and can solve the detailed problem in the design of the phase tracking reference signal particularly during multi-user multiplexing.

The present embodiment includes a plurality of specific embodiments, and is used for describing the present application in detail with reference to specific examples:

detailed description of the preferred embodiment 1

According to the definition of NR of 3GPP in the related art, the demodulation reference signal is DMRS, the phase tracking reference signal is PTRS, and other signaling or names are consistent with LTE, the RRC signaling in all embodiments may also be signaling such as MAC CE and DCI, and the patterns and port resource sets of DMRS and PTRS are mainly examples within 1 PRB.

The user serving the same base station confirms whether PTRS compensation is needed or not according to the MCS level, when the MCS level is higher, for example, 256QAM or higher modulation mode, the user needs PTRS to perform phase compensation, so that data demodulation is better performed, spectrum efficiency is improved, and the like, and the user with the lower MCS level can perform phase compensation without using PTRS. When the MCS level is higher, the transmission information is more sensitive to the influence of the crystal oscillator of the radio frequency antenna, and when the MCS level is lower, the influence is not great. Therefore, phase compensation is more necessary when the MCS level is higher. And as the center frequency increases, the influence of phase noise on the user is larger, so that in a high frequency band, the PTRS is used for phase compensation, and the method is an effective method for improving the frequency spectrum efficiency of the user.

In a multi-user multiplexing scenario, because a base station and each user transmit information through multiple radio frequency antennas, crystal oscillators of the antennas have certain differences, and MCS levels of the users are different, PTRS requirements of the users are different, that is, whether PTRS is needed or not, the number of ports needing PTRS, patterns corresponding to the ports of the PTRS, and other parameters are different to a certain extent. Therefore, the base station needs to determine whether PTRS phase compensation needs to be performed for a certain user or certain users according to the PTRS requirement information of each user.

The user determines whether there is a zero power PTRS according to the layer number information sent by the base station, if the layer number is greater than a certain value (taking the value as 2 in LTE as an example), this is a single-user scenario, there is no zero power PTRS, and fig. 5a is a reference signal pattern for zero power phase tracking that does not exist in the embodiment of the present invention, as shown in fig. 5 a; otherwise, processing may be performed according to a multi-user scenario, if there are multiple users who need PTRS for phase compensation, it is considered that there are zero-power PTRS and non-zero-power PTRS, and fig. 5b shows a zero-power phase tracking reference signal pattern, as shown in fig. 5 b.

Assuming that the LTE is followed, when the number of layers allocated at the base station side is greater than 2, the scenario is considered as a single-user scenario; and when the number of layers is less than or equal to 2, judging according to the number of DMRS ports allocated by the base station side: when the number of the DMRS ports is large, the multi-user multiplexing scenario can be considered, and when the number of the DMRS ports is small, for example, the number of layers is equal to 2, the multi-user multiplexing scenario can be considered as a user scenario or a multi-user scenario, because a certain non-orthogonal DMRS ports may exist, but the multi-user multiplexing scenario can be processed at this time.

The base station sets a maximum reference coefficient P of PTRS port number according to the number of PTRSs required by a plurality of users, wherein the value P represents the ratio of the number of phase tracking reference signal ports set by the base station to the number of demodulation reference signal ports, the maximum value P can be 1, at this moment, P is 1/2, and the maximum number N of PTRS ports set by the base station through RRC is 4 when M is 8 according to the number M of ports of DMRS configured by the base station through RRC by the high-level signaling.

The base station side sets a certain number of PTRS port sets, and each set comprises different PTRS ports. Wherein each group of sets represents a demand situation for PTRS in different scenarios, and the set maximum number N of PTRS ports represents that in the set of PTRS ports, the maximum number of ports in each group is N, and there may be a set of ports smaller than N. For example, according to N ═ 4, the dimension of the number of PTRS ports in each group in the port set of the PTRS configured by the base station through the RRC may be 4 at most, for example, the port set may be set as multiple selectable port sets such as { [1,2,3,4], [5,7,6,8] } or { [1,2,3,5, 6], [6,7,4,8] } or { [1,2], [3,4], [5,6], [7,8] } with a dimension smaller than 4, and the purpose of setting the dimension smaller than 4 may be to ensure that the size of the port set can be adjusted when the number of users requiring PTRS decreases, thereby effectively improving the spectrum efficiency.

When two or more time domain symbols DMRS are occupied, different ports of some DMRSs occupy the same subcarrier, so that the mapping of the PTRS directly influences the mapping relation of the PTRS port set. Under the general condition that more than two time domain symbols of DMRSs exist, whether ports of the DMRSs on the same subcarrier position among different symbols are consistent can be judged, if so, several symbol positions behind the DMRSs of the same symbols can be considered to be repeatedly transmitted to the first symbol position, at the moment, the corresponding DMRSs on the several symbol positions can be considered to be a subset, if the ports of the DMRSs on the same subcarrier position on different time domain symbol positions are different, different subsets exist, and the number of the DMRSs of different ports corresponding to each subset on a frequency domain can be called as a frequency domain transmission period.

PTRS ports corresponding to different subsets are distinguished through different subcarrier positions, PTRS of the first subset is transmitted in the first frequency domain sending period, PTRS of the second subset is transmitted in the second frequency domain sending period, and the like until all PTRS transmission is completed. As shown in fig. 5c, fig. 5c is a mapping diagram of phase tracking reference signals of different subsets according to the embodiment of the present invention.

If a user configures two DMRS ports in the user at this time, and the two DMRSs cannot share the same PTRS port, that is, the two DMRS ports do not use the same antenna of the same base station for transmitting information or the difference between crystal oscillators between the two antennas used is large, and the MCS level of the UE is high, for example, 256QAM, so that the UE needs to occupy the two PTRS ports, the base station may configure the PTRS ports as [1,2,3,5] through RRC, and a specific pattern is shown in fig. 5d, where fig. 5d is a port set diagram of the phase tracking reference signal according to the embodiment of the present invention.

The PTRS ports may correspond to the DMRS ports one to one, i.e., the same ports of the PTRS and the DMRS occupy the same subcarriers. At this time, it is assumed that the user 1 occupies two PTRS ports, and there are two other users at the same time, each user corresponds to 1PTRS port, and at this time, we can configure the port 1 and the port 2 for the user 1 by referring to the configuration condition of the port set, and the two other users configure the port 3 and the port 5, respectively.

The specific resource set may adopt resource mapping (bitmap) mapping, as shown in fig. 5d, at this time, the base station configures 4 PTRS ports through RRC, and there are 8 DMRS ports, and the content of the resource mapping (bitmap) is [1,1,1,0,1,0,0,0], where 1 represents that the PTRS is transmitted in the subcarrier corresponding to the DMRS port, and 0 represents that the subcarrier corresponding to the DMRS port transmits data.

The PTRS pattern allocated to each user may indicate a PTRS position, a zero power position, and a data position of the user through a mapping result of the above resource mapping (bitmap) and port correspondence information of the PTRS port set. The user 1, the user 2 and the user 3 are respectively configured with a PTRS port 1, a port 2, a port 3 and a port 5, which respectively correspond to the DMRS port 1, the port 2, the port 3 and the port 5, at this time, an intersection is taken according to the mapping content of the resource mapping (bitmap) and the corresponding relation of the DMRS port, that is, the intersection of the PTRS port of the user 1 and the resource mapping (bitmap) is the first two PTRS ports, so that 4 subcarrier positions corresponding to the PTRS port of the user 1 can be obtained, the subcarrier positions corresponding to the port 1 and the port 2 are non-zero power reference signals, and the rest two subcarrier positions are zero power positions; similarly, for user 2, the sub-carrier of port 3 where the corresponding resource map (bitmap) and PTRS intersect can be obtained is a non-zero power port, and the remaining 3 ports are zero power ports; similarly, for user 3, the sub-carrier of port 5 where the corresponding resource map (bitmap) and PTRS intersect may be obtained as a non-zero power port, and the remaining 3 ports are zero power ports.

In a multi-user scenario, MCS levels and bandwidth information of multiple users may be different, so different PTRS port patterns may have different time-frequency domain densities, a base station may configure a parameter to indicate the time-frequency domain density of a PTRS through RRC or DCI signaling, for example, the default time-frequency domain density is 1, and when the RRC signaling or DCI signaling does not perform notification, the density of the PTRS is processed according to the fact that the entire time-frequency domain symbol is occupied, if the PTRS density is not 1, 1-bit information may be sent through DCI to notify a user, and the density of the PTRS corresponding to the port in the time domain is 1/2 of the density when the entire time-frequency domain symbol is occupied, or 1/4.

However, in the case of no higher layer RRC signaling indication, the time-frequency domain density notified by DCI may be adjusted accordingly according to the change of MCS level, but cannot exceed the time-frequency domain density threshold notified by higher layer signaling. When the time-frequency domain density of the PTRS of a certain user is reduced, the DCI signaling informs the user of a new pattern, and because the time-frequency domain resources occupied by the PTRS are reduced, the user can send data on the changed resources, and other users do not adjust. If the time-frequency domain density of a certain user increases, the DCI signaling does not inform a new pattern, and the PTRS of the user still uses the old pattern.

A base station sends information such as a port set, a resource mapping (bitmap) mapping relation and the like to a user through an RRC signaling, reference signals and data are demodulated for the obtained DMRS and PTRS patterns, when the MCS level of the user changes in the demodulation process, that is, a possible PTRS pattern changes, at this time, the base station can inform a new PTRS pattern of the user through a DCI signaling, as shown in FIG. 5d, when the pattern of a PTRS 3 port corresponding to a user 2 occupies the whole time domain symbol, if the MCS level is reduced at this time, the DCI can inform the density change of the PTRS time domain of the user through 1-bit information, the density is represented by 1/2 or 1/4, the 1-bit information is only informed to the port where the PTRS pattern changes, other ports do not change, FIG. 5e is a schematic diagram of phase tracking reference signal patterns with different densities in the embodiment of the present invention, as shown in fig. 5 e. At this time, the user 2 can send the PTRS with half the number of symbols and the data with half the number of symbols on the subcarrier corresponding to the DMRS port position, so that the spectrum efficiency can be improved, and at the same time, the other two users cannot receive the related signaling, and still occupy the entire time domain symbol according to the PTRS port 3 configured by the RRC, and all the symbols are recorded as the zero-power PTRS, so that a part of overhead can be saved, and the spectrum efficiency cannot be greatly affected.

Specific example 2

The first communication node transmits or receives data on phase tracking reference signal resources outside the set of phase tracking reference signal resources.

The PTRS resource set configured by the high-level signaling of the base station is a subset of all PTRS resources. For example, the number of DMRS ports is 8, the number of all PTRS resources is 8, and a certain PTRS resource set is taken as a PTRS resource of a PTRS port [1,2,3,5 ]; at this time, PTRS ports outside the PTRS resource set are [4,6,7,8], and at this time, optionally, positions of the PTRS ports [4,6,7,8] may send or receive data, as shown in fig. 5d, and also no signal or reference signal with zero power may be sent at positions of the PTRS ports [4,6,7,8], and fig. 6 is a schematic view of a usage situation of the PTRS resources outside the PTRS resource set according to the embodiment of the present invention, as shown in fig. 6.

Specific example 3

The first communication node indicates the first subset of the phase tracking reference signal resources with the first subset of the demodulation reference signal resources and indicates the mth subset of the phase tracking reference signal resources with the mth subset of the demodulation reference signal resources.

The ports of the M subsets of demodulation reference signal resources are code division multiplexed or time division multiplexed in time domain, and the ports of the M subsets of phase tracking reference signal resources are frequency division multiplexed.

When the ports of the M subsets of the demodulation reference signal resources are time-division multiplexed in the time domain, the ports of the M subsets occupy different time domain symbols.

The value of M can be 2,3,4 and the like. At this time, the first subset of the DMRS is a DMRS port on a first DMRS symbol bit in a time domain, the second subset of the DMRS is a DMRS port on a second DMRS symbol bit in the time domain, and at this time, the subsets of the PTRS correspond to the subsets of the DMRS one to one, as shown in fig. 5 c.

Within each subset frequency domain of the phase tracking reference signal resources, both the first subset and the second subset of the demodulation reference signal resources have transmissions.

At this point, it may be considered that the resources within each subset of the PTRS may correspond to DMRS port resources within the DMRS multiple subsets.

At this time, DMRS ports occupying the same subcarrier correspond to port resources in different PTRS subsets, and all ports in each DMRS port subset have corresponding PTRS ports corresponding to the ports. This is a more flexible design method for the PTRS port pattern.

Fig. 7 is a PTRS port subset cross mapping in an embodiment of the present invention, as shown in fig. 7, at this time, two subsets of DMRS respectively include 4 DMRS ports, and the DMRS ports are also mapped in different PTRS port positions, for example, 2 ports in a first subset of DMRS may be mapped in a second subset of PTRS, if it is assumed that at this time, DMRS port 1 and port 2, port 3 and port 4 respectively correspond to the same user, and each corresponding two DMRS ports may be used as an OCC in a frequency domain, at this time, DMRS port 1 and port 2 may not be used for performing phase compensation on the two PTRS, and an vacated DMRS2 port may be used by other users, for example, users corresponding to DMRS port 7;

at this time, PTRS resources of 4 users can be transmitted in the first port subset of the PTRS. And port 2 in the first subset of the DMRS may transmit at a frequency domain position corresponding to the second subset of the PTRS, or may select that the DMRS port 2 does not have PTRS phase compensation and does not correspond to any PTRS port.

Specific example 4

The ports of the first subset and the ports of the second subset of demodulation reference signal resources are code division multiplexed or time division multiplexed in the time domain, and the ports of the first subset and the ports of the second subset of phase tracking reference signal resources are frequency division multiplexed.

As shown in fig. 5c, at this time, a DMRS port 1 is a port in the first subset of the DMRS, a port 5 is a port in the second subset of the DMRS, and the number of the two ports is time-division, at this time, the two ports are respectively configured with a PTRS port 1 and a port 5, the PTRS port 1 corresponds to the positions of the DMRS port 1 and the port 5 in the first frequency domain transmission period, the PTRS port 5 corresponds to the positions of the DMRS port 1 and the port 5 in the first frequency domain transmission period, the allocated PTRS ports 1 and the allocated ports 5 respectively correspond to the first subset of the PTRS and the second subset of the PTRS, and the PTRS ports 1 and the ports 5 are frequency-division multiplexed, at this time, it can be ensured that the two DMRS ports corresponding to the same subcarrier position can have corresponding PTRS for phase compensation.

If the ports in the first subset of DMRS and the ports in the second subset of DMRS are in a code division multiplexing manner, fig. 8 is a PTRS pattern corresponding to the DMRS subjected to code division multiplexing according to the embodiment of the present invention, as shown in fig. 8, at this time, code division multiplexing exists in the DMRS ports 1 and ports 5, so that the DMRS ports of two terminals corresponding to the code division occupy the same subcarrier position, and therefore, the ports 1 in the first subset of DMRS are configured to correspond to the DMRS ports 1 and ports 5 of the first subset, and the ports 5 in the second subset of DMRS are configured to correspond to the DMRS ports 1 and ports 5 of the second subset of the code division.

Specific example 5

The phase tracking reference signal port number is different for different second communication nodes.

For a plurality of terminals, pseudo-orthogonal DMRS ports exist, that is, DMRSs of the plurality of terminals occupy the same port, and in this case, it is necessary to design that an orthogonal PTRS corresponds to the pseudo-orthogonal DMRS. Taking an example that 2 terminals have pseudo-orthogonal DMRS ports, at this time,

DMRS ports

1 and 2 are allocated to both the terminals, and the two terminals both need PTRS for phase compensation, at this time, a base station is required to distinguish the PTRS ports for the two terminals, fig. 9 is a PTRS pattern when the DMRS of the two terminals is pseudo-orthogonal in the embodiment of the present invention, as shown in fig. 9.

At this time, the base station has DMRS port numbers [1,2,3,4,5,6,7,8] corresponding to the terminal 1PTRS port set, and the base station has DMRS port numbers [2,1,4,3,5,7,6,8] corresponding to the terminal 2PTRS set. At this time, pseudo-orthogonal terminals exist, and the ports in the first mapped PTRS resource set corresponding to the DMRS, that is, the PTRS port of terminal 1 corresponds to DMRS port 1, and the PTRS port of terminal 2 corresponds to DMRS port 2.

Specific example 6

When the number of ports of the demodulation reference signal is larger than a threshold, the phase tracking reference signal resource set is not enabled.

Optionally, when the number of ports of the demodulation reference signal is less than a threshold, the set of phase tracking reference signal resources is enabled.

Confirming the enablement of the PTRS resource set according to a demodulation reference signal or a terminal MCS level or base station RRC signaling.

The base station can allocate the PTRS resources to the user according to the MCS level or the DMRS port number of the user, and can directly inform the user whether the PTRS resources are allocated through RRC signaling according to whether multi-user multiplexing exists at the moment.

When the terminal MCS level is high, for example, 64QAM or 256QAM or higher, the influence of the phase noise is large, and when the terminal MCS level is low, for example, 16QAM or QPSK or lower, the phase noise does not have a large influence on the data demodulation, so the base station can confirm the enabling of the PTRS resource set according to the MCS level of the terminal.

The threshold value of the number of the DMRS ports configured to 1 user is set to be 2 or 4, when the number of the DMRS ports is greater than 2 or 4, the single user scene can be considered, a base station does not need to set a PTRS resource set, and only the PTRS resource corresponding to the DMRS ports needs to be configured for the user. And when the number of the DMRS ports is less than 2 or 4, the base station determines that multi-user multiplexing is possible, the base station triggers the PTRS resource set enabling, and meanwhile, the user can judge whether the base station side sends the PTRS resource set or not according to the number of the allocated DMRS ports.

Specific example 7

And when the phase tracking reference signal resource set is enabled, the first communication node informs a second communication node of the corresponding non-zero power phase tracking reference signal sending resource in the phase tracking reference signal resource set by using the indication signaling of the demodulation reference signal resource.

The base station configures a PTRS resource set to a user, when multiple multiplexed users receive the PTRS resources, the base station needs to determine which PTRS or PTRSs are allocated to the user, and at this time, the base station can use the resources of the DMRS port to indicate. Assuming that the PTRS resource set configured by the base station at this time is [1,3,5,7], the PTRS resource set corresponds to the DMRS ports [1,3,5,7], and is configured to the DMRS port 1 and the port 2 of the user 1 at this time, the PTRS port 1 allocated to the user 1 is obtained according to the allocation situation of the DMRS and the PTRS port set, and other PTRS ports in the resource set may send zero-power reference signals or no signal.

When there are pseudo-orthogonal DMRS ports, for example, DMRS ports allocated to user 1 and user 2 are both port 1 and port 2, and at this time, the set of PTRS port resources allocated by the base station is [1,2,3,5], at this time, if there is no other indication information, both user 1 and user 2 may consider that both PTRS port 1 and port 2 are allocated to themselves, which is not favorable for phase compensation, at this time, the allocation situations of two PTRS may be distinguished by the method described in specific embodiment 5, as shown in fig. 9, or for the above case, the base station sends 1bit signaling through DCI, and through these two users, the allocation situations of PTRS port 1 and PTRS port 2 are determined.

The first communication node transmits only non-zero power and zero power phase tracking reference signals within the set of phase tracking reference signal resources.

As shown in fig. 5b, the PTRS resource set configured by the base station is [1,2,3,4], for the user 1, the PTRS port corresponding to the DMRS port is 1, that is, at the PTRS port [1,2,3,4] in the physical resource block sent by the base station to the user 1, the PTRS port 1 is a non-zero power PTRS, and the

ports

2,3,4 are zero power PTRS, so that only the port 1 sending the non-zero power PTRS and the

PTRS ports

2,3,4 sending the zero power PTRS to the user 1 in the PTRS resource set [1,2,3,4] configured by the base station; similarly, suppose that user 2 is configured with PTRS port 2, the PTRS port 2 sent to user 2 by the base station is a non-zero power PTRS, and the other 3 ports send zero power PTRS. No matter what kind of PTRS resource set configured by the base station is, in the resource set, the base station sends a non-zero power reference signal on the PTRS corresponding to the user, and sends a zero power PTRS on other ports in the resource set.

Specific example 8

The first communication node configures a plurality of phase tracking reference signal resource sets to the second communication node through high-layer signaling, and the first communication node informs the second communication node of which resource set by using dynamic signaling of at least one of the following.

QCL indication information, scrambling sequence, physical layer dynamic signalling

The base station is configured with various PTRS resource sets, and can allocate different PTRS port sets for different QCLs through QCL information similar to the PQI of LTE;

for different DMRS scrambling sequences and different DMRS ports, different PTRS ports correspond to the different DMRS ports, so that the resource set of the PTRS can be informed through the scrambling sequences of the DMRS;

the base station can inform the PTRS resource sets through DCI signaling, different resource sets correspond to different numbers, the resource sets of the numbers can be informed through the DCI signaling, and the DCI signals the terminal through 1bit signaling that the set of the resource pool sent by the base station at the moment is [1,2,3,4 ].

Specific example 9

And the first communication node configures the number P of ports contained in the phase tracking reference signal resource set to a second communication node through a high-level signaling.

Wherein, the P value is the number of the used phase tracking reference signal ports or the proportional value of the number of the demodulation reference signal ports, and M is an integer which is more than or equal to 1;

at this time, P has two expressions, wherein the P value can obtain the number of PTRS ports configured by the base station no matter whether the number of the PTRS ports is directly configured or the number of the DMRS ports is 1/M.

The P value may be the number of ports of the PTRS resource set configured by the base station, as described in embodiment 1, or the number of ports P may be directly configured by the base station to the direct number of ports of the user through signaling, without configuring the port set.

And the base station maps the relation between the PTRS and the DMRS according to the MCS level of the terminal, allocates the port with the higher MCS level in the DMRS as a first subset, and so on. At this time, the high-level signaling of the base station does not need to configure detailed information of the PTRS port set, and only needs to inform the terminal of the final PTRS port number P, and P ports occupy P continuous subcarriers in the frequency domain.

At this time, the signaling overhead of the base station that needs to notify the PTRS can be effectively reduced. Fig. 10a is a PTRS pattern a of non-port set indication according to an embodiment of the present invention.

The numbers of the PTRS ports may correspond to the numbers of the corresponding DMRS ports one to one.

Fig. 10b is a PTRS pattern b indicated by a non-port set according to the embodiment of the present invention, where the port number of the PTRS is designed as shown in fig. 10b, and the number of the PTRS also represents the port number at this time, and the pattern at this time can solve the problem that there are terminals occupying 4 DMRS ports, and the 4 DMRS ports use the same codebook, so that

DMRS ports

1,2,3, and 4 of terminal 1 can complete phase compensation only by using one PTRS port, and at this time, PTRS port 1 corresponds to the 4 DMRS ports. The PTRS port 2 corresponds to the DMRS port 5, and is used to compensate the phase of other terminals. At this time, the base station does not need to transmit the port set, only transmits the port number,

example 10

The time domain frequency domain density of each phase tracking reference signal or each group of phase tracking reference signals within the set of phase tracking reference signal resources is configurable;

the resource set of the phase tracking reference signal comprises a predefined resource configuration;

in a multi-user scenario, MCS levels and bandwidth information of multiple users may be different, so different PTRS port patterns may have different time-frequency domain densities, a base station may configure a parameter to indicate the time-frequency domain density of a PTRS through RRC or DCI signaling, for example, the predefined time-frequency domain density is 1, and when the RRC signaling or DCI signaling does not perform notification, the density of the PTRS is processed according to the fact that the entire time-frequency domain symbol is occupied, if the PTRS density is not 1, 1-bit information may be sent through DCI to notify a user, and the density of the PTRS corresponding to the port in the time domain is 1/2 of the density when the entire time-frequency domain symbol is occupied, or 1/4.

The base station sends the port set and bitmap to the user through RRC signaling, demodulates reference signals and data for the obtained DMRS and PTRS patterns, and when the MCS level of the user changes during the demodulation process, that is, a possible PTRS pattern changes, the base station may notify the new PTRS pattern of the user through DCI signaling at this time, when the patterns of

PTRS

1 and 2 ports corresponding to the user 1 occupy the whole time domain symbol, and if the MCS level decreases at this time, the DCI may notify the density change of the PTRS time domain of the user through 1-bit information at this time, where the 1-bit information indicates that the density is 1/4, the 1-bit information only notifies the port where the PTRS pattern changes, and the other ports do not change, fig. 11 is a phase tracking reference signal pattern with different densities in the embodiment of the present invention, as shown in fig. 11. At this time, the user 2 can send the PTRS with half the number of symbols and the data with half the number of symbols on the subcarrier corresponding to the DMRS port position, so that the spectrum efficiency can be improved, and at the same time, the other two users cannot receive the related signaling, and still occupy the entire time domain symbol according to the PTRS port 3 configured by the RRC, and all the symbols are recorded as the zero-power PTRS, so that a part of overhead can be saved, and the spectrum efficiency cannot be greatly affected.

Specific example 11

the base station configures a PTRS resource set of multiple users, and the predefined time domain density is 1, namely the whole time domain symbol is occupied, when the time domain density becomes 1/2 or 1/4, the DCI can inform the density change of the port through 1bit information.

If there are two pseudo-orthogonal terminals, the base station configures DMRS port 1 such that two terminals are assigned one PTRS port 1. When the MCS levels corresponding to the two terminals decrease at this time, the required PTRS density also decreases, and when the PTRS requirements of the two terminals both become 1/2, the two PTRS patterns may be implemented in a time division manner, and fig. 12 is a PTRS pattern of a pseudo-orthogonal terminal according to an embodiment of the present invention, as shown in fig. 12. At this time, the allocation of two ports of the PTRS can be indicated by nscid, a terminal with nscid of 0 uses PTRS port 1, and a terminal with nscid of 1 uses PTRS port 2.

Detailed description of example 12

And the phase tracking reference signal resource set is notified to the second communication node by the first communication node in a bitmap mode.

The dimensionality of the bitmap is the port number of the demodulation reference signal;

the two states of each bit of the bitmap indicate whether the position is a phase tracking reference signal or a data bit, respectively.

The Bitmap is set as the dimension of the port number of the DMRS, the dimension of the Bitmap and the PTRS have no relation at the moment, the content mapped by the Bitmap is that the PTRS or data is transmitted at the position of the port corresponding to the DMRS, and the data is transmitted at the position when a certain bit of the Bitmap is 0 at the moment, and the data is transmitted at the position when the bit of the Bitmap is 1 at the moment.

Fig. 13 is a PTRS pattern of a terminal 1 according to an embodiment of the present invention, as shown in fig. 13, it is assumed that the number of DMRS ports is 8, so that the content of bitmap mapping is [1,0,1,0,1,0,1,0], and at this time, it is assumed that DMRS ports corresponding to the terminal 1 are port 1 and port 2, DMRS ports corresponding to the terminal 2 are port 3 and port 4, DMRS ports corresponding to the terminal 3 are port 5 and port 6, DMRS ports corresponding to the terminal 4 are port 7 and port 8, and at this time, each terminal obtains a corresponding set of PTRS port resources as [1,3,5,7], and the position of a zero-power PTRS can be obtained according to the corresponding relationship between the DMRS ports.

Specific example 13

The phase tracking reference signal ports of different subsets correspond to partial ports or all ports of the demodulation reference signal of the same subset.

And the base station groups according to the PTRS requirement of the terminal, namely, the ports in the first subset of the DMRS correspond to the terminal with higher MCS level and higher PTRS requirement, and the second subset is followed by other subsets and the like. While the PTRS port subsets correspond to different DMRS port subsets one to one, fig. 14a is a PTRS pattern a according to an embodiment of the present invention, as shown in fig. 14 a. At this time, if different terminals have pseudo-orthogonal DMRS ports, the terminal 1 and the terminal 2 both correspondingly use the DMRS port 1 and the DMRS port 2, and at this time, the terminal 1 and the terminal 2 both need to use a high-density PTRS, so that the terminal 1 and the terminal 2 both need two DMRS ports to perform corresponding phase compensation, and at this time, some DMRS ports in the second subset do not need to perform the PTRS compensation. At this time, the two terminals correspond to DMRS port 1 and DMRS port 2, and the PTRS corresponds to PTRS port 1 and port 2 and PTRS port 7 and port 8, where

ports

7 and 8 also correspond to DMRS port 1 and port 2, but here

ports

7 and 8 correspond to DMRS port 1 and port 2 on different subcarriers.

Similarly, there are more pseudo-orthogonal ports in the first subset of DMRS, and the MCS level of the terminal corresponding to the second subset of DMRS is lower, and it may not be allocated with PTRS for phase compensation, in this case, as shown in fig. 14b, fig. 14b is a PTRS pattern b according to an embodiment of the present invention, where the first subset [1,2,3,4] and the second subset [5,6,7,8] of PTRS both correspond to the first subset of DMRS, and the ports in the second subset of PTRS correspond to the ports in the first subset of DMRS in other frequency domain transmission periods.

More pseudo-orthogonal terminals can be resolved at this time.

EXAMPLES example 14

In the high frequency band, there may be DMRS ports on other time domain symbols besides the DMRSs of the front loaded mode, and in this case, generally, the sub-carrier positions corresponding to the rear DMRS ports and the front loaded DMRSs have the same DMRS ports. In this case, mainly to obtain a better demodulation effect, the DMRS port at this time is more easily affected by factors such as the mobile speed and the phase noise of the terminal, so the PTRS is designed as shown in fig. 15 at this time, and fig. 15 is a PTRS pattern corresponding to the multi-column DMRS according to the embodiment of the present invention.

Specific example 15

The base station allocates different sets of phase tracking reference signal resources for different demodulation reference signal patterns.

The configuration of the P value may be a semi-static value configured by a higher layer signaling, for example, the configuration is 4, the base station only configures 4 PTRS ports, and when the number of the PTRS ports is greater than or equal to 4, only 4 PTRS ports are available; when the number of the DMRS ports is less than 4, two PTRS ports can be selected for use;

the P value may be a set configured by higher layer signaling, that is, the base station configures different P values according to the pattern type of the DMRS, for example, configuration [2,4,4], which indicates that two PTRS ports are configured for 2 orthogonal DMRS ports; the base station configures 4 PTRS ports for 4 DMRS ports, and only configures 4 PTRS ports for 8 orthogonal DMRS ports;

currently, 3GPP supports at most 12 orthogonal ports through DMRS, but the scenario is generally the same as the low-frequency case, and the influence of phase noise is not great at low frequency, so in the application that 12 orthogonal ports exist in DMRS, there is generally no PTRS for compensation, and fig. 16 is a pattern corresponding to the DMRS of the orthogonal port 12 in the embodiment of the present invention, as shown in fig. 16.

EXAMPLE 16

The above embodiments all occupy 14 OFDM symbols in the physical resource block time domain, but do not exclude the case where there are 7 OFDM symbols, as shown in fig. 17a, fig. 17a is a PTRS pattern that occupies 7 time domain symbols per subframe according to the embodiments of the present invention.

The embodiments described above all use DMRS occupying 12 subcarriers, but do not exclude the case that there are no 12 subcarriers occupied, as shown in fig. 17b, where fig. 17b is a PTRS pattern of DMRS not occupying 12 subcarriers within each PRB in the embodiment of the present invention.

Specific example 17

The first communication node indicating the first subset of the phase tracking reference signal resources with the first subset of the demodulation reference signal resources and indicating the second subset of the phase tracking reference signal resources with the second subset of the demodulation reference signal resources; the ports of the first subset and the ports of the second subset of demodulation reference signal resources are code division multiplexed or time division multiplexed in the time domain, and the ports of the first subset and the ports of the second subset of the second type noise reference signal resources are frequency division multiplexed. And, within each subset frequency domain of the phase tracking reference signal port resources, both the first subset and the second subset of demodulation reference signal resources have transmissions.

When there are demodulation reference signals occupying two or more time domain symbols, different ports of some demodulation reference signals occupy the same subcarrier. As shown in fig. 18, fig. 18 is a diagram of reference signals each having 8 ports, demodulation reference signals having 8 ports according to an embodiment of the present invention,

ports

1 and 5 occupy the same subcarriers,

ports

2 and 6 occupy the same subcarriers,

ports

3 and 7 occupy the same subcarriers, and

ports

4 and 8 occupy the same subcarriers. The ports of the first subset and the ports of the second subset of the demodulation reference signal resources are code division multiplexed or time division multiplexed in time domain, and it is required that the corresponding ports in the first subset and the corresponding ports in the second subset of the demodulation reference signal resources are time division multiplexed or code division multiplexed, and then the corresponding ports in different subsets must be on the same subcarrier. As shown in fig. 18, the first subset of the first reference signals contains ports {1,2,3,4} and the second subset may contain ports {5,6,7,8}, then port 1 in the first subset and port 5 in the second subset are time division multiplexed or code division multiplexed; ports 2 in the first subset and ports 6 in the second subset are time division multiplexed or code division multiplexed; ports 3 in the first subset and ports 7 in the second subset are time division multiplexed or code division multiplexed; ports 4 in the first subset and ports 8 in the second subset are time division multiplexed or code division multiplexed. For another example, if the first subset of the first reference signals includes ports {1,6,3,8} and the second subset may include ports {5,2,7,4}, then port 1 in the first subset and port 5 in the second subset are time-division multiplexed or code-division multiplexed; ports 2 in the first subset and ports 6 in the second subset are time division multiplexed or code division multiplexed; ports 3 in the first subset and ports 7 in the second subset are time division multiplexed or code division multiplexed; ports 4 in the first subset and ports 8 in the second subset are time division multiplexed or code division multiplexed.

At this time, the phase tracking reference signal is also divided into 2 subsets, and the two subsets are frequency division multiplexed. As shown in fig. 18, the 8 ports contained in the phase tracking reference signal are also divided into two subsets, where the first subset contains ports {1,2,3,4} of the phase tracking reference signal, and the second subset contains ports {5,6,7,8} of the phase tracking reference signal, where

ports

1,2,3,4 and

ports

5,6,7,8 are frequency division multiplexed.

The first subset of demodulation reference signal resources indicates the first subset of phase tracking reference signal resources, and the second subset of phase tracking reference signal resources is indicated by the second subset of demodulation reference signal resources. That is, the first subset of port resources of the demodulation reference signal corresponds to the first subset of port resources of the phase tracking reference signal, and the second subset of port resources of the demodulation reference signal corresponds to the second subset of port resources of the phase tracking reference signal. If the first subset of demodulation reference signals comprises ports {1,2,3,4} of the demodulation reference signals and the first subset of phase tracking reference signals comprises ports {1,2,3,4} of the phase tracking reference signals, the ports of the first subset of demodulation reference signals and the ports of the first subset of phase tracking reference signals are in one-to-one correspondence, that is, the port i of the demodulation reference signal corresponds to the port i, i ═ 1,2,34 of the phase tracking reference signal; if the second subset of demodulation reference signals includes ports {5,6,7,8} of the demodulation reference signals and the second subset of phase tracking reference signals includes ports {5,6,7,8} of the phase tracking reference signals, then the ports of the second subset of demodulation reference signals and the ports of the second subset of phase tracking reference signals are in one-to-one correspondence, i.e., port j of the demodulation reference signal corresponds to port j of the phase tracking reference signal, which is 5,6,7, 8. With this correspondence, the base station can indicate the port information of the phase tracking reference signal by using the port information notifying the demodulation reference signal. For example, if the base station informs the user that the ports of the demodulation reference signals used by the user are 5,6, the user can know that the ports of the phase tracking reference signals are also in one or more of {5,6 }.

And, within each subset frequency domain of the phase tracking reference signal port resources, both the first subset and the second subset of demodulation reference signal resources have transmissions. As can be seen from fig. 18, in the frequency domain of the first subset of the phase tracking reference signals, i.e. on the subcarriers corresponding to

ports

1,2,3,4 of the phase tracking reference signals, the ports included in the two subsets of the demodulation reference signals have transmission, i.e. all ports of the demodulation reference signals have transmission; similarly, in the frequency domain of the second subset of the phase tracking reference signals, i.e. on the subcarriers corresponding to the

ports

5,6,7,8 of the phase tracking reference signals, the ports included in both subsets of the demodulation reference signals are transmitted, i.e. all ports of the demodulation reference signals are transmitted.

Further, the ports included in the first subset of demodulation reference signals may be regarded as ports mapped on the first OFDM symbol in the demodulation reference signal region, and the ports included in the second subset of demodulation reference signals may be regarded as ports mapped on the second OFDM symbol in the demodulation reference signal region.

The phase tracking reference signal port number is different for different second communication nodes. For example, for different user terminals U0, U1, U0, the port needs to be as shown in fig. 18, and U1, the port needs to be as shown in fig. 18a, and fig. 18a is a phase tracking reference signal port number diagram according to the embodiment of the present invention.

If the two subsets of demodulation reference signals contain ports {1,2,3,4} and {5,6,7,8}, then for U1, the first subset of phase tracking reference signals contains ports {1,5,3,7}, which correspond to the first subset of demodulation reference signals {1,2,3,4}, i.e., port 1 of the phase tracking reference signal, which corresponds to port 1 of the demodulation reference signal; port 5 of the phase tracking reference signal, corresponding to port 2 of the demodulation reference signal; a port 3 for phase tracking reference signals, a port 3 corresponding to demodulation reference signals, a port 7 for phase tracking reference signals, and a port 4 corresponding to demodulation reference signals;

the second subset of phase tracking reference signals comprises ports {2,6,4,8}, corresponding to the first subset of demodulation reference signals {5,6,7,8}, i.e., port 2 of the phase tracking reference signal corresponds to port 5 of the demodulation reference signal; port 6 for phase tracking reference signal, corresponding to port 6 for demodulation reference signal; port 4 for phase tracking reference signal, corresponding to port 7 for demodulation reference signal; the port 8 for the phase tracking reference signal corresponds to the port 8 for the demodulation reference signal.

The port correspondence described in this embodiment refers to using the same precoding.

Detailed description of example 18

The first communication node is configured to a second communication node phase tracking reference signal port resource set through a high-level signaling; the reference signal port resource includes at least one of the following parameters: port number, port serial number, time domain density, frequency domain density, pattern, and multiplexing mode among ports.

The high layer signaling here refers to RRC signaling or MAC signaling, and the base station configures a port set of the phase tracking reference signal for the user through the high layer signaling, where the number of ports included in the port set is often smaller than the number of ports included in the phase tracking reference signal. For example, as shown in fig. 19, fig. 19 is a sequence number diagram of 4 phase tracking reference signal ports according to an embodiment of the present invention, and a base station may configure the 4 phase tracking reference signal ports to a user through high layer signaling. At this time, the maximum number of ports of the phase tracking reference signal is still 8 in practice, as shown in fig. 18 a. Therefore, at this time, the base station may notify the user of the maximum port number of the phase tracking reference signal by using a high-level signaling, for example, 4, so that the user can know that the

ports

1,2,3, and 4 of the phase tracking reference signal are configured to the user, that is, the resource set of the phase tracking reference signal includes the

ports

1,2,3, and 4. Alternatively, the base station may inform the port set of the phase tracking reference signal by using a bit map, for example, if there are 8 phase tracking reference signal ports, then 8bit map may be used to indicate whether the corresponding ports are included, for example, 10000001 indicates that the first port and the 8 th port are included in the resource set.

The first communication node indicates usage within the set of phase tracking reference signal port resources by demodulation reference signal resource allocation. As shown in fig. 19, the resource set configured by the base station to the user phase tracking reference signal by using higher layer signaling includes phase tracking

reference signal ports

1,2,3, 4. According to the stated port correspondence, that is, port 1 of DMRS (demodulation reference signal) corresponds to PTRS (phase tracking reference signal) port 1; the port 3 of the DMRS corresponds to the PTRS, the port 3 of the DMRS, the port 5 of the DMRS corresponds to the PTRS and the port 2 of the DMRS; port 7 of DMRS corresponds to PTRS, port 4.

If the phase tracking reference signal port corresponding to the configured demodulation reference signal port exists in the port resource set, the port of the corresponding phase tracking reference signal transmits, and the reference signals with zero power are transmitted on the rest ports in the port resource set. As shown in fig. 19, if the ports configured by the base station to the user through signaling for demodulating the reference signal include

DMRS ports

5 and 6, and the two DMRS ports correspond to one PTRS, since the DMRS port 5 corresponds to the PTRS port 2, the user can know that the PTRS is to be transmitted on the port 2 of the PTRS, and the PTRS port 2 belongs to the port resource set {1,2,3,4}, the port 2 is to be transmitted, and no reference signal or a reference signal with zero power is transmitted on the remaining

ports

1,3, 4. The zero power reference signal can be understood as a zero power phase tracking reference signal or other reference signals.

The first communication node transmits or receives data on phase tracking reference signal resources outside the set of phase tracking reference signal port resources. Optionally, the first communication node transmits no signal or a zero-power reference signal on a phase tracking reference signal resource outside the set of phase tracking reference signal port resources. Based on the present example, since the number of ports of the phase tracking reference signal is 8, and only PTRS

ports

1,2,3,4 are included in the port resource set, the

default ports

5,6,7,8 of the phase tracking reference signal can be used to transmit data. Of course, by default, nothing or a zero power reference signal may be transmitted.

The invention can save the overhead of dynamic signaling when scheduling multiple users. For example, when multiple users perform multi-user scheduling, the base station semi-statically allocates a resource set to the users by using a high-level signaling, for a certain user, a port of a phase tracking reference signal can be determined only according to a configured port of a demodulation reference signal (MCS corresponding to the port must be greater than a threshold), and other ports in the resource set transmit a reference signal with zero power. In other words, the semi-statically configured resource set includes ports that transmit zero-power reference signals by default, unless some ports in the set are the same as the phase tracking reference signal ports corresponding to the user-configured demodulation reference signals. Therefore, when a plurality of users perform scheduling, due to the fact that different demodulation reference signal ports corresponding to different users correspond to different tracking reference signal ports with different phases, multiple ports of phase tracking reference signals belonging to different users can be enabled to be orthogonal.

If the user is single-user scheduling, the number of data layers or demodulation reference signal ports generally configured for one user is greater than a threshold, and at this time, a reference signal with zero power is not needed, that is, a resource set of a phase tracking reference signal is meaningless, that is, the user does not need to consider the ports included in the resource set, even if the base station configures the resource set at this time. That is, when the number of ports of the demodulation reference signal is greater than a threshold, the port resource set of the second type noise reference signal is not enabled. At this time, if the base station has configured a user PTRS to exist at a high level, the user may use the MCS level to notify whether the PTRS exists dynamically, for example, if the MCS is higher than a threshold, the PTRS exists at this time, otherwise, the PTRS does not exist. Of course, if a higher layer configures a user PTRS not to exist, the PTRS does not exist even if the MCS is higher. If the high-level configuration PTRS exists and the MCS level is higher, under the condition of single-user scheduling, the base station can implicitly indicate the time-frequency domain density and the like of the PTRS of the user by utilizing the MCS level, the actually scheduled bandwidth and the like without considering the resource set of the phase tracking reference signal. At this time, the actually transmitted PTRS port is the PTRS port corresponding to the DMRS port.

Of course, when the number of ports of the demodulation reference signal is less than a threshold, which is referred to as multi-user scheduling, the set of port resources of the second type of noise reference signal is enabled.

Specific example 19

The phase tracking reference signal resources hop (hopping) over different time units or frequency domain units. The relative position of the phase tracking reference signal pattern is related to the sequence number of the time unit or the frequency domain unit.

In order to reduce the interference of the possible adjacent cells to the PTRS, when the base station schedules multiple slots at a time, the PTRS may hop on different slots or different subbands.

At this time, it is assumed that the base station configures the frequency domain density of the PTRS to transmit the PTRS once every 4 PRBs, and without puncturing, the PTRS may be transmitted on the first PRB of the 4 PRBs, and at this time, in order to reduce the possible PTRS interference of the adjacent cell, the base station configures puncturing rules of the PTRS, for example, the base station configures the first slot or subband to transmit the PTRS on the first PRB, and the base station configures the second slot or subband to transmit the PTRS on the second PRB, and if there are all neighboring cell base stations transmitting the PTRS on the first PRB, the PTRS interference of the neighboring cell can be reduced. Fig. 20 is a schematic diagram of the ports of the phase tracking reference signal corresponding to different demodulation reference signal ports in different time units according to the embodiment of the present invention, as shown in fig. 20;

when N demodulation reference signal ports are associated with one phase tracking reference signal port, N precoding modes of the phase tracking reference signals are provided, wherein N is more than or equal to 1;

the first communication node respectively configures corresponding relations of demodulation reference signals and phase tracking reference signals for different time units or different frequency domain units;

the port of the phase tracking reference signal corresponds to the demodulation reference signal port, which means that the phase tracking reference signal port and the demodulation reference signal port use the same precoding. The corresponding relationship between the phase tracking reference signal port and the demodulation reference signal port is related to the serial number of the time unit or the frequency domain unit.

Suppose that X DMRSs of user 1 use X precoding schemes at this time, and the X DMRS ports are associated with one PTRS port. In general, for different slots or subbands, the position of the PTRS port allocated to the user is fixed, and in order to reduce PTRS interference, hopping may be performed on different slots or subbands, where fig. 21 is a drawing of hopping performed on different slots or subbands according to an embodiment of the present invention, as shown in fig. 21. At this point the user's PTRS may now have two cases:

the base station allocates a PTRS port for the X DMRS ports; in the first slot or sub-band, a PTRS port 1 allocated by the base station corresponds to a DMRS port 1, and in the second slot or sub-band, the PTRS port 1 allocated by the base station corresponds to a DMRS port 2;

the X DMRS ports correspond to X PTRS ports, but the base station selects one of the X PTRS ports to configure to the user. In the first slot or sub-band, the base station selects a PTRS port 1, and in the second slot or sub-band, the base station selects a PTRS port 2;

the rules for hopping of the phase tracking reference signal resource are different for different first communication nodes or second communication nodes. Different base stations may configure different hopping rules for users, and assume that the hopping rule configured by the base station 1 for a user is the same as the above-mentioned case where different base stations may configure different hopping rules for different users:

the base station 1 sends a PTRS to a first PRB configured for the user in a first slot or a sub-band, and sends a PTRS to a second PRB configured for the user in a second slot or the sub-band, at this time, the base station 2 may send a PTRS to a first PRB configured for the user in the first slot or the sub-band, and send a PTRS to a third PRB configured for the second slot or the sub-band;

aiming at the condition that a plurality of DMRSs are associated with one PTRS, a base station 1 configures a PTRS port corresponding to a DMRS port 1 in a first slot or sub-band for a user, and configures a PTRS port corresponding to a DMRS port 2 in a second slot or sub-band; and the base station 2 may configure a PTRS port corresponding to the DMRS port 1 in a first slot or a self-band for the user, and configure a PTRS port corresponding to the DMRS port 3 in a second slot or a sub-band.

For different user PTRS frequency domain densities, different port numbers of DMRSs associated with one PTRS port and different time domain resources scheduled at one time by a base station, PTRS hopping has different multipurpose rules, and the number of the DMRS ports, the number of the PTRS ports and the number of PRBs are all exemplified without limitation of the number;

example 4

The embodiment of the invention also provides a storage medium. Alternatively, in the present embodiment, the storage medium may be configured to store program codes for performing the following steps:

s1, allocating to a second communication node phase tracking reference signal resource set;

and S2, indicating the use condition of each resource in the phase tracking reference signal resource set through the allocation condition of the demodulation reference signal resource.

Optionally, in this embodiment, the storage medium may include, but is not limited to: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.

Optionally, in this embodiment, the processor executes the set of phase tracking reference signal resources configured for the second communication node according to a program code stored in the storage medium;

alternatively, in this embodiment, the processor performs indicating the usage of each resource in the set of phase tracking reference signal resources by the allocation of demodulation reference signal resources according to the program code stored in the storage medium.

Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.

It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for processing a reference signal, comprising:

the first communication node is configured to a second communication node phase tracking reference signal resource set;

the first communication node indicates the use condition of each resource in the phase tracking reference signal resource set through the distribution condition of demodulation reference signal resources;

wherein the reference signal resource comprises at least one of the following parameters: port number, port serial number, time domain density, frequency domain density, pattern, and multiplexing mode among ports;

the first communication node indicates a first subset of phase tracking reference signal resources using a first subset of demodulation reference signal resources, and indicates an mth subset of the phase tracking reference signal resources using an mth subset of the demodulation reference signal resources, wherein the demodulation reference signal resources include M subsets, and the M subsets of the demodulation reference signal resources are transmitted in a frequency domain of each subset of the phase tracking reference signal resources.

2. The method of claim 1, wherein the first communication node transmits or receives data on phase tracking reference signal resources outside the set of phase tracking reference signal resources.

3. The method of claim 1, wherein the first communication node transmits no signal or a zero power reference signal on a phase tracking reference signal resource outside the set of phase tracking reference signal resources.

4. The method according to any of claims 1-3, wherein the set of phase tracking reference signal resources is not enabled when the number of ports of the demodulation reference signal resources is greater than a first threshold, or the set of phase tracking reference signal resources is enabled when the number of ports of the demodulation reference signal resources is less than a second threshold.

5. The method of claim 1, wherein the ports of the M subsets of demodulation reference signal resources are code division multiplexed in the time domain or time division multiplexed in the time domain, and wherein the ports of the M subsets of phase tracking reference signal resources are frequency division multiplexed.

6. The method of claim 1, wherein ports of the M subsets of demodulation reference signal resources occupy different time domain symbols when the ports of the M subsets of demodulation reference signal resources are time division multiplexed in the time domain.

7. The method of claim 1, wherein different second communication nodes correspond to the phase tracking reference signals of different port numbers.

8. The method according to claim 1, wherein the time-domain frequency-domain density of each phase tracking reference signal or each group of phase tracking reference signals within the set of phase tracking reference signal resources is configured by the first communication node.

9. The method according to claim 4, wherein when the set of phase tracking reference signal resources is enabled, the first communication node signals a transmission resource of a corresponding non-zero power phase tracking reference signal within the set of phase tracking reference signal resources to a second communication node by using the indication of the demodulation reference signal resource.

10. The method according to claim 1 or 9, wherein the first communication node transmits only non-zero power and zero power phase tracking reference signals within the set of phase tracking reference signal resources.

11. The method of claim 1, wherein the first communication node is configured with a plurality of sets of phase tracking reference signal resources to a second communication node, comprising: the first communication node informs the second communication node of the location of the set of phase tracking reference signal resources using dynamic signaling of at least one of: quasi co-location QCL indication information, scrambling sequence, physical layer dynamic signaling.

12. The method according to claim 1 or 9, wherein the first communication node configures to the second communication node the number P of ports included in the phase tracking reference signal resource set, where P is the number of ports using phase tracking reference signal, or P is a ratio of the number of ports using phase tracking reference signal to the number of ports demodulating reference signal, and M is an integer greater than or equal to 1.

13. The method of claim 1, wherein the set of phase tracking reference signal resources comprises: a predefined resource configuration.

14. The method of claim 1, wherein the sets of phase tracking reference signal resources are mapped to different sets of resources by the first communication node via a bitmap.

15. The method according to claim 1, wherein the time-domain frequency-domain density of each phase tracking reference signal or each group of phase tracking reference signals within the set of phase tracking reference signal resources is configured by the first communication node.

16. A method for processing a reference signal, comprising:

a second communication node receives a phase tracking reference signal resource set configured by a first communication node;

the second communication node receives an indication of the use condition of each resource in the phase tracking reference signal resource set by the first communication node through the distribution condition of demodulation reference signal resources;

17. The method of claim 16, wherein different second communication nodes correspond to the phase tracking reference signals of different port numbers.

18. The method of claim 16, wherein the set of phase tracking reference signal resources is disabled when the number of ports of the demodulation reference signal resources is greater than a first threshold, or the set of phase tracking reference signal resources is enabled when the number of ports of the demodulation reference signal resources is less than a second threshold.

19. A reference signal processing apparatus applied to a first communication node, comprising:

a configuration module configured to configure a set of phase tracking reference signal resources for a second communication node;

an indicating module, configured to indicate a usage of each resource in the phase tracking reference signal resource set according to an allocation of demodulation reference signal resources;

the indication module is further configured to indicate a first subset of phase tracking reference signal resources by a first subset of demodulation reference signal resources, and indicate an mth subset of the phase tracking reference signal resources by using the mth subset of the demodulation reference signal resources, where the demodulation reference signal resources include M subsets, and the M subsets of the demodulation reference signal resources are transmitted in a frequency domain of each subset of the phase tracking reference signal resources.

20. The apparatus of claim 19, wherein the first communication node transmits or receives data on phase tracking reference signal resources outside the set of phase tracking reference signal resources.

21. The apparatus of claim 19, wherein the first communication node transmits no signal or a zero power reference signal on a phase tracking reference signal resource outside the set of phase tracking reference signal resources.

22. A reference signal processing apparatus, applied to a second communication node, comprising:

a first receiving module, configured to receive a set of phase tracking reference signal resources configured by a first communication node;

a second receiving module, configured to receive an indication of a usage situation of each resource in the set of phase tracking reference signal resources by the first communication node through an allocation situation of demodulation reference signal resources;

23. The apparatus of claim 22, wherein different second communication nodes correspond to the phase tracking reference signals of different port numbers.

24. The apparatus of claim 22, wherein the set of phase tracking reference signal resources is disabled when the number of ports of the demodulation reference signal resources is greater than a first threshold, or the set of phase tracking reference signal resources is enabled when the number of ports of the demodulation reference signal resources is less than a second threshold.