CN108809527B

CN108809527B - Signal transmission method, device and communication node

Info

Publication number: CN108809527B
Application number: CN201710313340.3A
Authority: CN
Inventors: 蒋创新; 鲁照华; 陈艺戬; 王瑜新; 梅猛; 姚珂; 张淑娟
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2017-05-05
Filing date: 2017-05-05
Publication date: 2022-07-05
Anticipated expiration: 2037-05-05
Also published as: CN108809527A

Abstract

The embodiment of the invention discloses a signal transmission method, which comprises the steps of sending a first signaling to a second communication node, wherein the first signaling is used for indicating a parameter of a phase tracking reference signal and a parameter of a first distance; the first distance is a distance between physical transmission resources corresponding to transmission acknowledgement feedback and the transmission acknowledgement feedback, or a distance between physical transmission resources corresponding to transmission non-acknowledgement feedback and the transmission non-acknowledgement feedback. The embodiment of the invention discloses a signal transmission device, a communication node and a computer readable storage medium.

Description

Signal transmission method, device and communication node

Technical Field

The present invention relates to the field of wireless communications, and in particular, to a signal transmission method, apparatus, communication node, and computer-readable storage medium.

Background

Currently, the physical layer technology of the New air interface (NR) is under fire thermal discussion in the third Generation Partnership Project (3 GPP) RAN 1. Flexibility and efficiency have always been the goal sought in NR physical layer design. The pursuit of maximum flexibility for physical layer reference signals is also a trend, since the requirements for demodulating reference signals may differ for different application scenarios.

For a user with a higher delay requirement, the user needs to feed back a signal indicating whether downlink data transmission is correct or not to the base station in the same time slot. That is, the downlink physical transmission resources allocated to the user by the base station and the transmission acknowledgement feedback ACK/transmission negative acknowledgement feedback NACK corresponding to whether or not the user correctly received are in the same subframe. As shown in fig. 1, for some users or some services, downlink data transmission and corresponding ACK/NACK feedback are in the same time slot, which may be referred to as a self-contained time slot format (self-contained slot), so that the time delay of ACK/NACK feedback can be greatly reduced, thereby facilitating service transmission with high timeliness requirement.

As shown in fig. 1, the time slot includes 14 Orthogonal Frequency Division Multiplexing (OFDM) symbols, the base station schedules downlink data to the user through downlink control channels of the first two symbols, and the user feeds back ACK/NACK on the last 2 symbols of the time slot after detecting the downlink data. And if the user correctly detects the downlink data channel, the user feeds back to the base station ACK, otherwise, the user feeds back to the base station NACK. For users or services with low delay requirements, the ACK/NACK feedback does not need to be too fast, and the ACK/NACK feedback may be several slots later than the downlink data channel. Generally, in order to support such a self-contained slot structure, the signal design related to demodulation should be as favorable as possible for fast demodulation, thereby realizing ACK/NACK fast feedback. Such as demodulation reference signals DMRS, are preferably placed on the first 1 or 2 OFDM symbols of the downlink data channel.

Since the high frequency band in NR is also the main frequency band range, such as the center carrier frequency above 6GHz, and when the center carrier frequency is very high, the phase noise becomes a big problem, therefore, how to design the reference signal to effectively estimate the phase noise and how to reduce the signaling based on the self-contained timeslot format becomes an urgent problem to be solved.

Disclosure of Invention

In order to solve the existing technical problems, embodiments of the present invention provide a signal transmission method, apparatus, communication node, and computer readable storage medium, which can effectively estimate phase noise through a reference signal and reduce signaling.

In order to achieve the above purpose, the technical solution of the embodiment of the present invention is implemented as follows:

the embodiment of the invention provides a signal transmission method, which comprises the following steps:

sending a first signaling to a second communication node, wherein the first signaling is used for indicating a parameter of a phase tracking reference signal and a parameter of a first distance;

the first distance is a distance between physical transmission resources corresponding to transmission acknowledgement feedback and the transmission acknowledgement feedback, or a distance between physical transmission resources corresponding to transmission non-acknowledgement feedback and the transmission non-acknowledgement feedback.

Further, the parameters of the phase tracking reference signal include: a parameter indicating whether a non-zero power phase tracking reference signal is present.

Further, if the first distance is smaller than a first threshold, the non-zero power phase tracking reference signal is not present.

Further, the parameters of the phase tracking reference signal include: the non-zero power phase tracks the time domain length of the reference signal.

Further, if the first distance is smaller than a second threshold, the time domain length of the non-zero power phase tracking reference signal is L1 symbols;

if the first spacing is greater than or equal to the second threshold, the time domain length of the non-zero power phase tracking reference signal is L2 symbols;

wherein, L1 and L2 are both positive integers, and L1 is less than L2.

Further, the method further comprises:

configuring values of L1, L2 to the second communication node through first higher layer signaling.

Further, the method further comprises:

sending a second signaling to the second communication node, where the second signaling carries resource locations of phase tracking reference signals, and the second signaling includes: second high layer signaling, third high layer signaling and dynamic signaling of modulation coding mode, or the second signaling includes: a second high-level signaling, a third high-level signaling, a dynamic signaling of a modulation coding scheme, and a dynamic signaling of a bandwidth size of an allocated resource, or the second signaling is a fourth high-level signaling, where the second high-level signaling is a high-level signaling whether to configure a phase tracking reference signal, the third high-level signaling is a high-level signaling configuring a modulation coding scheme threshold, and a resource location of the phase tracking reference signal includes: the non-zero power phase tracks the resource location of the reference signal and the zero power phase tracks the resource location of the reference signal.

Further, after the sending the first signaling to the second communication node, the method further comprises:

and sending data to the second communication node on all or part of the resources of the resource position of the non-zero power phase tracking reference signal.

transmitting a zero-power signal to the second communication node on all or part of the resource location of the non-zero-power phase tracking reference signal, wherein the zero-power signal at least comprises: a zero power phase tracking reference signal;

or, no signal is transmitted on all or part of the resource location of the non-zero power phase tracking reference signal.

Embodiments of the present invention further provide a computer-readable storage medium, which stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, the steps of the signal transmission method described above are implemented.

The embodiment of the invention also provides a signal transmission method, which comprises the following steps:

and transmitting data to the second communication node at the resource position of the non-zero power phase tracking reference signal, wherein the modulation order of the transmitted data is lower than the modulation order of the data in the data transmission area.

Further, a corresponding relationship exists between the modulation order of the transmitted data and the modulation order of the data in the data transmission region, wherein the corresponding relationship is configured through predefined or high-layer signaling.

Further, the coding efficiency of the transmitted data is the same as the coding efficiency of the data in the data transmission region.

Further, the method further comprises:

notifying the second communication node to send data on the resource position of the non-zero power phase tracking reference signal through high-level signaling;

or, the second communication node is informed to send the phase tracking noise reference signal at the resource position of the non-zero power phase tracking reference signal through high-layer signaling.

Further, the method further comprises:

sending a third signaling to the second communication node, where the third signaling carries a resource location of a phase tracking reference signal, and the third signaling includes: second high layer signaling, third high layer signaling and dynamic signaling of modulation coding mode, or the third signaling includes: a second high-level signaling, a third high-level signaling, a dynamic signaling of a modulation coding scheme, and a dynamic signaling of a bandwidth size of an allocated resource, or the third signaling is a fourth high-level signaling, where the second high-level signaling is a high-level signaling whether to configure a phase tracking reference signal, the third high-level signaling is a high-level signaling configuring a modulation coding scheme threshold, and a resource location of the phase tracking reference signal includes: the non-zero power phase tracks the resource location of the reference signal and the zero power phase tracks the resource location of the reference signal.

Embodiments of the present invention further provide a computer-readable storage medium, which stores computer-executable instructions, and when executed by a processor, the computer-executable instructions implement the steps of the signal transmission method described above.

receiving a first signaling sent by a first communication node, wherein the first signaling is used for indicating a parameter of a phase tracking reference signal and a parameter of a first distance;

Further, the non-zero power phase tracking reference signal is not present when the first spacing is less than a first threshold.

Further, when the first distance is smaller than a second threshold, the time domain length of the non-zero power phase tracking reference signal is L1 symbols;

when the first spacing is greater than or equal to the second threshold, the time domain length of the non-zero power phase tracking reference signal is L2 symbols;

wherein, L1 and L2 are both positive integers, and L1 is less than L2.

Further, the method further comprises: receiving values of L1, L2 configured by the first communication node through first higher layer signaling.

Further, the method further comprises: receiving a second signaling sent by the first communication node, where the second signaling carries a resource location of a phase tracking reference signal, and the second signaling includes: second high layer signaling, third high layer signaling and dynamic signaling of modulation coding mode, or the second signaling includes: a second high-level signaling, a third high-level signaling, a dynamic signaling of a modulation coding scheme, and a dynamic signaling of a bandwidth size of an allocated resource, or the second signaling is a fourth high-level signaling, where the second high-level signaling is a high-level signaling whether to configure a phase tracking reference signal, the third high-level signaling is a high-level signaling configuring a modulation coding scheme threshold, and a resource location of the phase tracking reference signal includes: the non-zero power phase tracks the resource location of the reference signal and the zero power phase tracks the resource location of the reference signal.

Further, after the receiving the first signaling sent by the first communication node, the method further includes:

receiving data transmitted by the first communication node on all or part of the resource location of the non-zero power phase tracking reference signal.

receiving a zero-power signal transmitted by the first communication node on all or part of the resource location of the non-zero-power phase tracking reference signal, wherein the zero-power signal at least comprises: the phase of zero power tracks the reference signal.

Further, the method further comprises:

reporting to the first communication node at least one of: time domain length information and time domain position information;

wherein the time domain length information is: when the first distance is smaller than a third threshold, the non-zero power phase which can be supported by the second communication node tracks the maximum time domain length of the reference signal;

the time domain position information is: when the first distance is smaller than a fourth threshold, the non-zero power phase which can be supported by the second communication node tracks the last time domain position of the reference signal.

Embodiments of the present invention provide a computer-readable storage medium, which stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, the steps of the signal transmission method described above are implemented.

receiving data transmitted by a first communication node on resource positions of a non-zero power phase tracking reference signal, wherein the modulation order of the transmitted data is lower than the modulation order of the data in a data transmission region.

Further, the method further comprises:

receiving a high-level signaling notified by the first communication node, and sending data on a resource position of the non-zero power phase tracking reference signal;

or, receiving a high-level signaling notified by the first communication node, and sending a phase tracking noise reference signal on a resource location of the non-zero power phase tracking reference signal.

Further, the method further comprises:

receiving a third signaling sent by the first communication node, where the third signaling carries a resource location of a phase tracking reference signal, and the third signaling includes: second high layer signaling, third high layer signaling and dynamic signaling of modulation coding mode, or the third signaling includes: a second high-level signaling, a third high-level signaling, a dynamic signaling of a modulation coding scheme, and a dynamic signaling of a bandwidth size of an allocated resource, or the third signaling is a fourth high-level signaling, where the second high-level signaling is a high-level signaling whether to configure a phase tracking reference signal, the third high-level signaling is a high-level signaling configuring a modulation coding scheme threshold, and a resource location of the phase tracking reference signal includes: the non-zero power phase tracks the resource location of the reference signal and the zero power phase tracks the resource location of the reference signal.

Further, the method further comprises:

reporting first information of the first communication node, wherein the first information indicates a capability of using low-order modulated data for phase noise estimation.

An embodiment of the present invention further provides a signal transmission apparatus, where the apparatus includes: a first sending unit, configured to send a first signaling to a second communication node, where the first signaling is used to indicate a parameter of a phase tracking reference signal and a parameter of a first interval;

wherein, L1 and L2 are both positive integers, and L1 is less than L2.

Further, the first sending unit is further configured to send a second signaling to the second communications node, where the second signaling carries a resource location of a phase tracking reference signal, and the second signaling includes: second high layer signaling, third high layer signaling and dynamic signaling of modulation coding mode, or the second signaling includes: a second high-level signaling, a third high-level signaling, a dynamic signaling of a modulation coding scheme, and a dynamic signaling of a bandwidth size of an allocated resource, or the second signaling is a fourth high-level signaling, where the second high-level signaling is a high-level signaling whether to configure a phase tracking reference signal, the third high-level signaling is a high-level signaling configuring a modulation coding scheme threshold, and a resource location of the phase tracking reference signal includes: the non-zero power phase tracks the resource location of the reference signal and the zero power phase tracks the resource location of the reference signal.

An embodiment of the present invention provides a signal transmission apparatus, including: and a second sending unit, configured to send data to a second communication node at a resource location of a non-zero power phase tracking reference signal, where a modulation order of the sent data is lower than a modulation order of data in a data transmission region.

Further, the second sending unit is further configured to notify the second communications node through a higher layer signaling to send data on the resource location of the non-zero power phase tracking reference signal;

or, the second sending unit is further configured to notify, through higher layer signaling, the second communication node to send a phase tracking noise reference signal at a resource location of the non-zero power phase tracking reference signal.

An embodiment of the present invention further provides a signal transmission apparatus, where the apparatus includes: a first receiving unit, configured to receive a first signaling sent by a first communication node, where the first signaling is used to indicate a parameter of a phase tracking reference signal and a parameter of a first distance;

Further, the apparatus further comprises: a first reporting unit, configured to report to the first communication node at least one of the following information: time domain length information and time domain position information;

An embodiment of the present invention further provides a signal transmission apparatus, where the apparatus includes: and a second receiving unit, configured to receive data sent by the first communication node on a resource location of a non-zero power phase tracking reference signal, where a modulation order of the sent data is lower than a modulation order of data in a data transmission region.

Further, the apparatus further comprises: a second reporting unit, configured to report first information of the first communication node, where the first information indicates a capability of using low-order modulated data for phase noise estimation.

An embodiment of the present invention further provides a first communication node, where the first communication node includes: a first transmitter, configured to transmit a first signaling to a second communication node, where the first signaling is used to indicate a parameter of a phase tracking reference signal and a parameter of a first interval;

the first interval is an interval of physical transmission resources corresponding to transmission acknowledgement feedback and the transmission acknowledgement feedback, or an interval of physical transmission resources corresponding to transmission negative acknowledgement feedback and the transmission negative acknowledgement feedback.

An embodiment of the present invention further provides a first communication node, where the first communication node includes: and a second transmitter, configured to transmit data to a second communication node at a resource location of a non-zero power phase tracking reference signal, where a modulation order of the transmitted data is lower than a modulation order of data in a data transmission region.

An embodiment of the present invention further provides a second communication node, where the second communication node includes: a first receiver, configured to receive a first signaling sent by a first communication node, where the first signaling is used to indicate a parameter of a phase tracking reference signal and a parameter of a first distance;

An embodiment of the present invention further provides a second communication node, where the second communication node includes: and a second receiver, configured to receive data transmitted by the first communication node on a resource location of a non-zero power phase tracking reference signal, where a modulation order of the transmitted data is lower than a modulation order of data in a data transmission region.

The embodiment of the invention provides a signal transmission method, a signal transmission device, a communication node and a computer-readable storage medium, wherein a first signaling is sent to a second communication node, and the first signaling is used for indicating a parameter of a phase tracking reference signal and a parameter of a first distance; the first distance is a distance between physical transmission resources corresponding to transmission acknowledgement feedback and the transmission acknowledgement feedback, or a distance between physical transmission resources corresponding to transmission non-acknowledgement feedback and the transmission non-acknowledgement feedback. Embodiments of the present invention provide a signal transmission method, an apparatus, a communication node, and a computer-readable storage medium, where a first signaling that a first communication node notifies a second communication node may indicate a parameter of a phase tracking reference signal and a parameter of a first interval, so that phase noise may be effectively estimated by the reference signal, and notification of the signaling is reduced.

Drawings

In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having different letter suffixes may represent different examples of similar components. The drawings illustrate generally, by way of example, but not by way of limitation, various embodiments discussed herein.

Fig. 1 is a first schematic diagram of a timeslot structure according to an embodiment of the present invention;

fig. 2 is a first schematic flow chart of a signal transmission method according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a timeslot structure according to a second embodiment of the present invention;

fig. 4 is a schematic diagram of a timeslot structure provided in the embodiment of the present invention;

fig. 5 is a schematic diagram of a timeslot structure according to a fourth embodiment of the present invention;

fig. 6 is a schematic diagram of a timeslot structure according to a fifth embodiment of the present invention;

fig. 7 is a sixth schematic diagram of a timeslot structure according to an embodiment of the present invention;

fig. 8 is a schematic flow chart of a signal transmission method according to an embodiment of the present invention;

fig. 9 is a third schematic flowchart of a signal transmission method according to an embodiment of the present invention;

fig. 10 is a first schematic structural diagram of a signal transmission device according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a signal transmission device according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a signal transmission device according to a third embodiment of the present invention;

fig. 13 is a schematic structural diagram of a signal transmission device according to an embodiment of the present invention;

fig. 14 is a first schematic structural diagram of a first communication node according to an embodiment of the present invention;

fig. 15 is a schematic structural diagram of a first communication node according to an embodiment of the present invention;

fig. 16 is a first schematic structural diagram of a second communication node according to an embodiment of the present invention;

fig. 17 is a schematic structural diagram of a second communication node according to an embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Example one

An embodiment of the present invention provides a signal transmission method, as shown in fig. 2, the method may include: the first communication node sends a first signaling to the second communication node, wherein the first signaling is used for indicating a parameter of the phase tracking reference signal and a parameter of the first distance.

The first distance is a distance between physical transmission resources corresponding to transmission acknowledgement feedback ACK and transmission acknowledgement feedback ACK, or a distance between physical transmission resources corresponding to transmission negative acknowledgement feedback NACK and transmission negative acknowledgement feedback NACK.

Specifically, it can be understood that: the spacing between the ACK/NACK and a Physical Downlink Shared Channel (PDSCH) is associated with the configuration of the phase tracking reference signal. Or it may be understood that the first communication node informs the second communication node of some parameters of the phase tracking reference signal by signaling ACK/NACK and the spacing of the corresponding physical transmission resources. It can be understood vice versa that the first communication node can implicitly signal the ACK/NACK and the spacing of the corresponding physical transmission resources using the parameters of the phase tracking reference signal.

In the embodiment of the present invention, the first communication node generally refers to a base station, and the second communication node generally refers to a user terminal. However, it is not excluded that the first communication node and the second communication node are both base stations or terminals, nor that the first communication node is a base station and the second communication node is a user terminal.

Currently, the carrier frequency due to NR can be in a high frequency band, and the high frequency band often has the influence of phase noise. Due to the influence of the phase noise, random phase noise is generated on different time domain symbols, so that the accuracy of channel estimation is greatly reduced. To estimate phase offsets caused by phase noise on different time domain symbols, the base station may transmit a phase tracking reference signal so that the user can estimate phase offsets on different Orthogonal Frequency Division Multiplexing (OFDM) symbols according to the phase tracking reference signal.

As shown in fig. 3, the time slot only contains downlink channels, and there is a phase tracking reference signal on each OFDM symbol in the data channel region, so that the user can estimate the phase offset on different OFDM symbols. Since the influence of phase noise is generally substantially the same for the entire OFDM symbol, the density of the phase tracking reference signals in the frequency domain may be configured to be relatively low, such as configuring a row of phase tracking reference signals on one subcarrier in every N Physical Resource Blocks (PRBs), for example, N equals 4.

Generally, a base station configures whether a semi-static existence Phase Tracking Reference Signal (PTRS) is configured by using a higher layer signaling, where the higher layer signaling may be Radio Resource Control (RRC) signaling, that is, the base station configures whether the semi-static existence PTRS is configured by using the RRC signaling, and this may be according to a located carrier frequency, for example, at a lower carrier frequency end, the base station may notify a user that the PTRS does not exist by using the RRC signaling semi-statically, so the PTRS does not exist all the time. In the high frequency band, the base station may semi-statically inform the user of the existence of PTRS by RRC signaling, and then PTRS may exist. At this time, if the Modulation and Coding Scheme (MCS) of the user is higher than a threshold, the PTRS exists, otherwise, the PTRS still does not exist. This is because, when the MCS of general data is low, the phase noise has little influence on channel estimation and demodulation, and when the MCS of data is high, the phase noise has great influence on demodulation performance, and at this time, the PTRS needs to be configured. In addition, if a PTRS is configured, data cannot be transmitted at the resource location of the corresponding PTRS, and at this time, the efficiency of transmitting data may be reduced, and if the bandwidth allocated by the user is small, for example, only 1 PRB, the PTRS may not be configured, even though the PTRS may improve the demodulation performance, additional overhead is brought. Therefore, the existence of the PTRS is related to the MCS dynamically configured by the base station to the user, the resource size (such as the allocated bandwidth), and the signaling for the higher layer to configure whether the PTRS exists.

If the resource bandwidth dynamically allocated to the user by the base station is less than a threshold, the PTRS does not exist even if the PTRS exists and the MCS is higher than a threshold.

If the resource bandwidth dynamically allocated to the user by the base station is large, the PTRS is configured to exist by the high-layer signaling, and the MCS is higher than a threshold, the frequency domain density of the PTRS may be high.

If the resource bandwidth dynamically allocated to the user by the base station is small, and if the PTRS is configured to exist by the high-layer signaling and the MCS is higher than a threshold, the time domain density of the PTRS may be low.

In the above configuration of PTRS, actually different traffic types are not considered, or self-contained slot structures are not considered to be supported. At present, in order to support a low-latency service and a simplified time slot structure and implement dynamic uplink and downlink time slot configuration in NR, an ACK/NACK fed back by a UE may be in the same time slot as corresponding downlink data. As shown in fig. 4. At this time, if PTRS is configured and a user is required to demodulate quickly and ACK/NACK is fed back in the same slot, it is basically impossible for the current user implementation. This is because the user needs to detect all PTRS and then use it for demodulating data, and the last symbol of PTRS is also the last symbol of data channel, and if the user starts detecting data from the first symbol again after detecting all PTRS, there is not enough time, and then ACK/NACK cannot complete feedback in the same slot.

Of course, at this time, the user may discard the PTRS detected in the latter part, for example, the user only detects the PTRS in

OFDM symbols

2, 3, 4, and 5, and the PTRS in the remaining symbols do not detect. At this time, the user starts to demodulate data after detecting PTRS on

symbols

2, 3, 4, 5, and it is very likely that the data is demodulated quickly and ACK/NACK feedback is completed in the same time slot. However, the resources occupied by PTRS on symbols 6 to 10 are wasted.

To improve transmission efficiency under self contained slot structure, the latter part of the PTRS may be used to transmit data. That is, the spacing of ACK/NACK and PDSCH is associated with the configuration parameters of the phase tracking reference signal. If the distance between the ACK/NACK and the PDSCH is 0 slot, the time domain length of the PTRS is shorter. A portion of the positions of the PTRS are now used for transmitting data. If the distance between the ACK/NACK and the PDSCH is 0 slot, the time domain length of the PTRS is shorter. A portion of the positions of the PTRS are now used for transmitting data.

In one possible implementation, the parameters of the phase tracking reference signal include: the non-zero power phase tracks the time domain length of the reference signal.

When the first distance is smaller than a second threshold, the time domain length of the non-zero power phase tracking reference signal is L1 symbols;

wherein, L1 and L2 are both positive integers, and L1 is less than L2.

Further, the first communication node configures the values of L1, L2 to said second communication node by first higher layer signaling.

Specifically, it can be understood that the spacing between the ACK/NACK and the physical data transmission resource is related to the time domain length of the phase tracking reference signal. Alternatively, it can be understood that the signaling of the ACK/NACK and the spacing of the physical data transmission resources may also implicitly indicate the time domain length of the phase tracking reference signal.

As shown in fig. 5, if the distance between the ACK/NACK and the PDSCH is relatively small, such as 0 slots, in order to support ACK/NACK feedback in the current slot, the PTRS in the latter half of the slot is not used for demodulation, and thus can be considered as being used for transmitting data. At this time, the PTRS has a short length and occupies only a small number of OFDM symbols. On subcarrier 11,

OFDM symbols

2, 3, 4, 5 transmit PTRS, while

symbols

6, 7, 8, 9, 10 are used to transmit data. However, if the distance between ACK/NACK and PDSCH is large, for example, ACK/NACK is fed back after several slots after PDSCH transmission, the time domain length of PTRS is large, as shown in fig. 4.

Because different users have different capabilities, some users have poor capabilities and need to demodulate the reference signal quickly, the PTRS has a short length to support self-contained slots, and some users have strong capabilities and can complete quick data demodulation to support self-contained slots under the condition of demodulating longer PTRS, so that the PTRS can have a longer length. Therefore, the user needs to feedback the length of the PTRS that can support self-contained or, as it were, the user needs to feedback the capability of the user to the base station, where the capability is used to indicate the position of the last PTRS that the user can support when implementing the self-contained subframe structure. The user feedback can support the ability for fast demodulation. For PTRS, the user feedback can support the maximum time domain length of PTRS during fast demodulation, or the position-dependent parameter at the end of PTRS, for example, in fig. 5, the position at the end of PTRS is symbol 5. The method is also applicable to demodulation of reference signals, and at this time, the user feedback can support the capability of fast demodulation, which refers to the final position of a time domain symbol where the DMRS can be placed in order to realize a self-contained slot structure. For example, for user 0, DMRS must be placed on

symbol

2 or 3 to achieve self-inclusion, while user 1 has stronger capability, DMRS may be placed on symbol 5 to achieve self-inclusion.

In one possible implementation, the parameters of the phase tracking reference signal include: a parameter indicating whether a non-zero power phase tracking reference signal is present.

When the first spacing is less than a first threshold, then the non-zero power phase tracking reference signal is not present.

Specifically, to simplify the standard procedure, the spacing of ACK/NACK and physical data transmission resources is related to the presence or absence of a phase tracking reference signal. The PTRS does not exist if the spacing between the ACK/NACK and the physical data transmission resource is short, whereas the PTRS may exist if the spacing between the ACK/NACK and the physical data transmission resource is long. For example, the distance between ACK/NACK and physical data transmission resource is 0 slot, and at this time, even if the PTRS is configured by the higher layer, and the bandwidth is large and the MCS is high, in order to implement fast demodulation, it is default that no PTRS with non-zero power exists, and the corresponding position is used for transmitting data. If the distance between the ACK/NACK and the physical data transmission resource is 1 or several slots, if the PTRS is configured by the high layer and the bandwidth is large and the MCS is high, the corresponding PTRS with non-zero power is transmitted for phase noise estimation. At this time, the existence of the PTRS can be judged according to the ACK/NACK and the space of the physical data transmission resource.

and sending data to the second communication node on all or part of the resource positions of the non-zero power phase tracking reference signals.

Specifically, for SU-MIMO, which is a single-user multiple-input multiple-output technique, in order to support fast demodulation, all positions or the latter half of the PTRS may be used to transmit data, which may improve transmission efficiency. Due to SU-MIMO, the number of transmission layers of a user is often smaller than a threshold value M. The spacing between ACK/NACK and PDSCH is associated with the configuration parameters of the phase tracking reference signal, when the number of transmission layers of the user is greater than a threshold value M. At this time, if the spacing between the ACK/NACK and the PDSCH is short, a part of the positions of the PTRS are used for transmitting data.

However, for Multi-User Multiple-Input Multiple-Output (MU-MIMO) technology, it is preferable that resources not transmitting PTRS are not used for transmitting data, and another resource may cause interference to PTRS of other users. The spacing between ACK/NACK and PDSCH is associated with the configuration parameters of the phase tracking reference signal, when the number of transmission layers of the user is less than a threshold value M. At this time, if the spacing between the ACK/NACK and the PDSCH is short, a part of the positions of the PTRS are not used for transmitting any signal, i.e., the PTRS of zero power.

According to the signal transmission method provided by the embodiment of the invention, the first communication node informs the second communication node that the first signaling can indicate the parameter of the phase tracking reference signal and the parameter of the first distance, so that the phase noise can be effectively estimated through the reference signal, and the signaling notification is reduced.

Example two

An embodiment of the present invention provides a signal transmission method, as shown in fig. 8, the method may include: a first communication node sends a second signaling to the second communication node, where the second signaling carries a resource location of a phase tracking reference signal, and the second signaling includes: second high layer signaling, third high layer signaling and dynamic signaling of modulation coding mode, or the second signaling includes: a second high-level signaling, a third high-level signaling, a dynamic signaling of a modulation coding scheme, and a dynamic signaling of a bandwidth size of an allocated resource, or the second signaling is a fourth high-level signaling, where the second high-level signaling is a high-level signaling whether to configure a phase tracking reference signal, the third high-level signaling is a high-level signaling configuring a modulation coding scheme threshold, and a resource location of the phase tracking reference signal includes: the non-zero power phase tracks the resource location of the reference signal and the zero power phase tracks the resource location of the reference signal.

Specific implementation mode 1: the base station may configure whether the PTRS exists semi-statically by using a higher layer signaling, for example, an RRC signaling, and the base station may notify the user that the PTRS does not exist semi-statically by using the RRC signaling according to the located carrier frequency, for example, at a lower carrier frequency end, so that the PTRS does not exist all the time, that is, the original resource location of the phase tracking reference signal does not exist.

The PTRS may exist if the base station informs the user that the PTRS exists semi-statically using RRC signaling. At this time, whether PTRS exists really, the density and the resource position are related to the modulation and coding scheme of the scheduling and the size of the allocated resource bandwidth. If the user's MCS (modulation coding scheme) is above a threshold, then PTRS is present, otherwise PTRS is still not present. The threshold is a modulation and coding scheme threshold configured by a higher layer signaling.

A lower MCS corresponds to a lower density of PTRS, or no PTRS. For example, the PTRS density corresponding to a high MCS is that the PTRS is transmitted once every 2 PRBs in the frequency domain, and the PTRS is transmitted every OFDM symbol in the time domain. And the lower MCS corresponds to a PTRS density that a PTRS is transmitted once every 4 PRBs in the frequency domain and once every 2 OFDM symbols in the time domain.

Similarly, a smaller resource allocation bandwidth corresponds to a lower density of PTRS, or no PTRS.

Therefore, the original resource location of the phase tracking reference signal and the high level of the phase tracking reference signal whether to be configured

Signaling, signaling of modulation coding mode, bandwidth size of allocated resource, and related modulation coding mode threshold configured by high-level signaling. Or, the original resource location is determined by whether a high-level signaling of the phase tracking reference signal, a signaling of the modulation coding mode, a bandwidth size of the allocated resource, and a modulation coding mode threshold configured by the high-level signaling are configured.

In a possible implementation manner, a first communication node sends a second signaling to a second communication node, where the second signaling carries a resource location of a phase tracking reference signal, and the second signaling includes: second high layer signaling, third high layer signaling and dynamic signaling of modulation coding mode. The second higher layer signaling is used to indicate whether the phase tracking reference signal exists, and the second higher layer signaling refers to a threshold of the MCS. At this time, the resource location of the PTRS may not be related to the allocated resource bandwidth size. The second high-level signaling is a high-level signaling for determining whether to configure a phase tracking reference signal, and the third high-level signaling is a high-level signaling for configuring a modulation coding mode threshold.

In a possible implementation manner, a first communication node sends a second signaling to a second communication node, where the second signaling carries a resource location of a phase tracking reference signal, and the second signaling includes: second high layer signaling, third high layer signaling, dynamic signaling of modulation coding mode and dynamic signaling of bandwidth size of allocated resource. At this time, the resource location of PTRS has a relationship with all 4 signaling. The second high-level signaling is a high-level signaling for determining whether to configure a phase tracking reference signal, and the third high-level signaling is a high-level signaling for configuring a modulation coding mode threshold.

Generally, the higher layer signaling refers to RRC signaling or MAC signaling or RRC signaling combined with MAC signaling.

In the specific implementation mode 1-1, after the original resource location of the phase tracking reference signal is determined, whether the PTRS really exists is determined according to the distance between the ACK/NACK and the PDSCH. If the distance between ACK/NACK and PDSCH is less than 1 threshold, for example, the threshold is 1 slot, that is, the distance between ACK/NACK and PDSCH is 0 slot, then in order to support fast feedback ACK/NACK, the PTRS with non-zero power will slow down the demodulation speed, so it is not necessary to exist. Data may be sent on all the REs of the original resource location. Alternatively, it may be used to transmit a PTRS of zero power or no signal to the user that would otherwise be transmitting the PTRS. And if the distance between the ACK/NACK and the PDSCH is larger than the threshold, the rapid demodulation is not needed, and the PTRS with non-zero power is sent on all the REs of the original resource position.

In a specific implementation mode 1-2, after the original resource position of the phase tracking reference signal is determined, the length of the non-zero power PTRS is determined according to the distance between the ACK/NACK and the PDSCH. If the spacing between ACK/NACK and PDSCH is smaller than 1 threshold, for example, the threshold is 1 slot, that is, the spacing between ACK/NACK and PDSCH is 0 slot, then to support fast feedback ACK/NACK, the PTRS with non-zero power will slow down the demodulation speed, so the length of the PTRS with non-zero power is shorter. At the original resource locations, the first few symbols are used to transmit non-zero power PTRS, and the remaining resource locations are used to transmit data. In other words, data may be sent on a portion of the REs of the original resource location. Optionally, the remaining resource locations may be used to transmit a PTRS of zero power or no signal to the user that would have transmitted the PTRS. And if the distance between the ACK/NACK and the PDSCH is larger than the threshold, the rapid demodulation is not needed, and the PTRS with non-zero power is sent on all the REs of the original resource position.

For example, the original resource locations include the REs of all PTRS in fig. 4, and the final transmitted PTRS with non-zero power only corresponds to the REs of PTRS in fig. 5.

In a possible implementation manner, a first communication node sends a second signaling to a second communication node, where the second signaling carries a resource location of a phase tracking reference signal, and the second signaling is a fourth higher layer signaling. The resource location of the PTRS is determined directly by higher layer signaling.

In a specific implementation 2, the resource location of the phase tracking reference signal is directly notified to the second communication node by a higher layer signaling. Compared with the above implementation 1, the difference is that the original resource location can be directly notified to the user by signaling of RRC or MAC CE.

In a specific implementation manner 3, the base station configures 2 sets of resource location parameters of the phase tracking reference signal through high-level signaling, where one set is larger in distance between corresponding ACK/NACK and PDSCH, as shown in fig. 4; the other set is that the distance between the corresponding ACK/NACK and PDSCH is smaller, such as in FIG. 5; after receiving the signaling of the spacing between the ACK/NACK and the PDSCH, the user can know which set of parameters of the actual PTRS corresponds to the higher layer signaling.

The signal transmission method provided by the embodiment of the invention can effectively estimate the phase noise through the reference signal and reduce the notification of the signaling.

EXAMPLE III

An embodiment of the present invention provides a signal transmission method, which may include: the second communication node reports to the first communication node at least one of the following information: time domain length information and time domain position information.

That is, the user needs to report the maximum time domain length of the PTRS that the base station can support when the first distance is smaller than a certain threshold, or the last position where the PTRS can be placed. Both the third threshold and the fourth threshold may refer to a distance between the ACK/NACK and the corresponding physical transmission resource, such as 1 slot, or 2 slots. Different user thresholds may be different.

The first communication node determines the time domain length of the non-zero power phase tracking reference signal by a capability report of the second communication node. When the distance between the ACK/NACK and the corresponding physical transmission resource is smaller than a threshold, the length of the phase tracking reference signal with non-zero power of different users is different, or the time domain end position of the phase tracking reference signal with non-zero power is different.

Due to different user capabilities and different demodulation speeds, the second communication node informs the first communication node of the length or the symbol end position of the non-zero power phase tracking reference signal which can be supported when the first communication node supports fast demodulation. That is, the second communication node needs to report the capability, which is the time domain length of the non-zero power phase noise reference signal that can be supported or the last symbol position of the non-zero power phase noise reference signal that can be supported. For example, the UE0 is very powerful, and when the distance between ACK/NACK and PDSCH is 0 slots, in order to support fast demodulation, the PTRS with non-zero power is as shown in fig. 5. And terminal UE1 is weak, when the spacing between ACK/NACK and PDSCH is 0 slots, in order to support fast demodulation, a non-zero power PTRS is as shown in fig. 6. Compared with fig. 5, the UE1 requires fewer PTRS symbols with non-zero power under self contained slot structure, or the last symbol position of the PTRS is earlier.

And when the distance between the ACK/NACK and the corresponding physical transmission resource is determined to be smaller than a threshold and the original resource position of the phase tracking reference signal is obtained, the user can determine the resource position of the non-zero power phase tracking reference signal according to the own capability.

Example four

The embodiment of the invention provides a signal transmission method, which comprises the following steps: the first communication node sends a first signaling to the second communication node, wherein the first signaling is used for indicating a parameter of the phase tracking reference signal and a parameter of the first distance.

The first distance is a distance between physical transmission resources corresponding to transmission acknowledgement feedback and the transmission acknowledgement feedback, or a distance between physical transmission resources corresponding to transmission non-acknowledgement feedback and the transmission non-acknowledgement feedback. It can also be said that the first communication node can implicitly signal ACK/NACK and the spacing of the corresponding physical transmission resources using the parameters of the phase tracking reference signal.

For example, the first communication node is configured with the phase tracking reference signal having a length L2, which is relatively long. And the interval between the configured ACK/NACK and the corresponding physical transmission resource is 0 time slot. At this time, the capability of the user is insufficient, that is, the ACK/NACK cannot be fed back immediately in the current time slot after the PTRS with the length of L2 is detected, and by default, the user may feed back the ACK/NACK in the next time slot. That is, the spacing between the actual ACK/NACK and PDSCH becomes 1 slot.

In addition, in the embodiment of the present invention, the distance between the transmission acknowledgement feedback and the physical transmission resources corresponding to the transmission acknowledgement feedback, or the distance between the transmission negative acknowledgement feedback and the physical transmission resources corresponding to the transmission negative acknowledgement feedback may be at a slot level, that is, the distance between the ACK/NACK and the corresponding physical transmission resources may be at a slot level, for example, m slots, or at a time domain symbol level, for example, m symbols, where m is a natural number.

EXAMPLE five

An embodiment of the present invention provides a signal transmission method, as shown in fig. 9, the method may include: the method comprises the steps that a first communication node sends data to a second communication node at a resource position of a non-zero power phase tracking reference signal, wherein the modulation order of the sent data is lower than the modulation order of data in a data transmission area.

The method provided by the embodiment of the invention uses the data of low-order modulation for phase noise estimation. Or, the first communication node sends data to the second communication node at the original resource position of the phase noise reference signal, wherein the modulation mode of the sent data is lower than that of the data in the data transmission area.

Since the influence of phase noise is severe only when the modulation scheme of the data is high. Or phase noise is more severe when the MCS is higher. The PTRS may then be transmitted for phase noise estimation. However, transmission of PTRS may increase overhead of RS, resulting in reduced resources for data transmission.

Alternatively, some low order modulated data may be used instead of PTRS. That is, at the original resource location, the PTRS is not placed, but the low order modulated data is placed. As shown in fig. 7, the data of the data transmission region is modulated with a high order, such as 64QAM, and the data signal for phase noise estimation is modulated with a low order, such as BPSK. This is advantageous in improving the transmission efficiency.

And the first communication node sends data to the second communication node at the original resource position of the phase noise reference signal, wherein the modulation mode of the sent data is lower than that of the data in the data transmission area. For different users, the SINR conditions are different, and if the SINR is high, the demodulation performance is good, the modulation mode of data in the data transmission region is generally high, and at this time, the data modulation order for phase noise estimation may also be slightly higher. For example, the SINR of the UE0 is very high, the modulation scheme of data in the data transmission region is 256QAM, and QPSK can be used for low-order modulated data for phase noise estimation. Conversely, if the SINR of the UE1 is not very high, the modulation scheme of the data in the data transmission region is 64QAM, and the low order modulated data for phase noise estimation is BPSK, otherwise the accuracy of the phase noise estimation is affected. It can be seen that the modulation mode of the data in the data transmission region and the modulation mode of the data for phase noise estimation can establish a corresponding relationship, so that the base station does not need to use extra signaling to inform the user of the modulation mode of the data for phase noise.

Wherein, there is a corresponding relationship between the modulation order of the transmitted data and the modulation order of the data in the data transmission region, and the corresponding relationship is configured through predefined or high-level signaling. The modulation mode of the data in the data transmission region and the modulation mode of the data for phase noise estimation may establish a correspondence.

Specifically, a relationship between a modulation scheme of data used for phase noise estimation and a modulation scheme of data not used for phase noise estimation may be established. For example, if the modulation scheme of the data not used for Phase noise estimation is 64QAM, the modulation scheme of the data used for Phase noise estimation is Binary Phase Shift Keying (BPSK); if the data modulation scheme not used for Phase noise estimation is 256QAM, the modulation scheme of the data used for Phase noise estimation is Quadrature Phase Shift Keying (QPSK). This default relationship may save signaling overhead.

Illustratively, as shown in table 1, since data used for phase noise estimation and data not used for phase noise estimation belong to the same data transmission, it is preferable that channel coding and the like are performed together for simplification of the operation, so that the coding efficiency is finally the same. That is, the coding efficiency of data for phase noise estimation is the same as the coding efficiency of data not used for phase noise estimation. I.e. the coding efficiency of the transmitted data is the same as the coding efficiency of the data in the data transmission region.

TABLE 1 modulation mode correspondence

For ordinary data transmission	Data for phase noise estimation
		64QAM	BPSK
256QAM	QPSK
		1024QAM	16QAM

Alternatively, the base station may establish a relationship between the modulation scheme of the data used for phase noise estimation and the modulation scheme of the data not used for phase noise estimation through a signaling configuration. Such as with RRC signaling or MAC layer signaling. For different users, the correspondence between the modulation scheme of the data in the data transmission region and the modulation scheme of the data used for phase noise estimation may be different.

Further, the method further comprises: and the second communication node reports first information of the first communication node, wherein the first information indicates the capability of using the low-order modulated data for phase noise estimation. Then the first communication node informs the second communication node to send data on the resource position of the non-zero power phase tracking reference signal through a high-level signaling; or, the second communication node is informed to send the phase tracking noise reference signal at the resource position of the non-zero power phase tracking reference signal through high-layer signaling.

Specifically, the use of low-order modulated data instead of PTRS requires a higher demodulation capability for the user, i.e., a higher receiver capability for the user. Therefore, different users can feed back whether they have the ability to support using low order modulated data for phase noise estimation, if so, BPSK, QPSK, etc. The base station then signals whether the user uses the low order modulated data or the phase tracking reference signal.

For example, in table 2, the base station configures, through high-level signaling, a correspondence between a modulation mode of data in a data transmission area and a modulation mode of data at a position of an original phase tracking reference signal or a PTRS.

TABLE 2

For ordinary data transmission	Data for phase noise estimation
		16QAM	PTRS
64QAM	BPSK
		256QAM	QPSK
1024QAM	16QAM

EXAMPLE six

The embodiment of the invention provides a signal transmission method, which comprises the following steps: a first communication node sends a first signaling to a second communication node, wherein the first signaling is used for indicating a parameter of a phase tracking reference signal and a parameter of a first distance; the first distance is a distance between physical transmission resources corresponding to transmission acknowledgement feedback and the transmission acknowledgement feedback, or a distance between physical transmission resources corresponding to transmission non-acknowledgement feedback and the transmission non-acknowledgement feedback.

Wherein the parameters of the phase tracking reference signal include: a parameter indicating whether a non-zero power phase tracking reference signal is present.

The non-zero power phase tracking reference signal is absent when the first spacing is less than a first threshold.

Specifically, the first communication node may configure two options to the second communication node through higher layer signaling (for example, RRC signaling, or MAC signaling, or RRC + MAC signaling): one option is that the phase tracking reference signal is present, and one option is that the phase tracking reference signal is not present. The second communication node may determine whether the phase tracking reference signal actually exists dynamically according to the signaling of the first interval carried in the DCI.

Wherein the parameters of the phase tracking reference signal include: the non-zero power phase tracks the time domain length of the reference signal. When the first distance is smaller than a second preset threshold, the time domain length of the non-zero power phase tracking reference signal is L1 symbols; when the first distance is greater than or equal to the second preset threshold, the time domain length of the non-zero power phase tracking reference signal is L2 symbols; wherein, L1 and L2 are both positive integers, and L1 is less than L2. The first communication node may configure values of L1 and L2 to the second communication nodes through higher layer signaling (RRC signaling, or MAC signaling, or RRC + MAC signaling), and the second communication node may determine whether the phase tracking reference signal is actually L1 or L2 according to the signaling of the first interval carried in the DCI.

Transmitting a zero-power signal to the second communication node on all or part of the resource location of the non-zero-power phase tracking reference signal, wherein the zero-power signal at least comprises: the phase of zero power tracks the reference signal.

Or, no signal is transmitted on all or part of the resource position of the non-zero power phase tracking reference signal. Or other zero-power reference signals, such as zero-power CSI-RSs, are transmitted on all or part of the resource positions of the non-zero-power phase tracking reference signals.

EXAMPLE seven

An embodiment of the present invention provides a signal transmission method, as shown in fig. 2, the method includes: the second communication node receives a first signaling sent by the first communication node, wherein the first signaling is used for indicating a parameter of the phase tracking reference signal and a parameter of the first distance.

wherein, L1 and L2 are both positive integers, and L1 is less than L2.

Further, the method further comprises: reporting to the first communication node at least one of: time domain length information and time domain position information;

Specifically, the signal transmission method provided in the embodiment of the present invention is a signal transmission method executed by the second communication node side, and specific understanding may refer to the description of the signal transmission method embodiment of the first communication node side, which is not described herein again.

Example eight

An embodiment of the present invention provides a signal transmission method, as shown in fig. 9, the method may include: the method comprises the steps that a second communication node receives data transmitted by a first communication node on resource positions of non-zero power phase tracking reference signals, wherein the modulation order of the transmitted data is lower than the modulation order of data in a data transmission area.

Further, the method further comprises:

or, receiving a higher layer signaling notified by the first communication node, and transmitting a phase tracking noise reference signal at a resource location of the non-zero power phase tracking reference signal.

Further, the method further comprises: receiving a third signaling sent by the first communication node, where the third signaling carries a resource location of a phase tracking reference signal, and the third signaling includes: second high layer signaling, third high layer signaling and dynamic signaling of modulation coding mode, or the third signaling includes: a second high-level signaling, a third high-level signaling, a dynamic signaling of a modulation coding scheme, and a dynamic signaling of a bandwidth size of an allocated resource, or the third signaling is a fourth high-level signaling, where the second high-level signaling is a high-level signaling whether to configure a phase tracking reference signal, the third high-level signaling is a high-level signaling configuring a modulation coding scheme threshold, and a resource location of the phase tracking reference signal includes: the non-zero power phase tracks the resource location of the reference signal and the zero power phase tracks the resource location of the reference signal.

Further, the method further comprises: reporting first information of the first communication node, wherein the first information indicates a capability of using low-order modulated data for phase noise estimation.

Example nine

An embodiment of the present invention provides a signal transmission device 10, as shown in fig. 10, where the device 10 includes: a first sending unit 101, configured to send a first signaling to a second communication node, where the first signaling is used to indicate a parameter of a phase tracking reference signal and a parameter of a first interval;

wherein, L1 and L2 are both positive integers, and L1 is less than L2.

Further, the apparatus further comprises: a configuring unit 102, configured to configure the values of L1 and L2 to the second communication node through a first higher layer signaling.

Further, the first sending unit 101 is further configured to send a second signaling to the second communication node, where the second signaling carries a resource location of a phase tracking reference signal, and the second signaling includes: second high layer signaling, third high layer signaling and dynamic signaling of modulation coding mode, or the second signaling includes: a second high-level signaling, a third high-level signaling, a dynamic signaling of a modulation coding scheme, and a dynamic signaling of a bandwidth size of an allocated resource, or the second signaling is a fourth high-level signaling, where the second high-level signaling is a high-level signaling whether to configure a phase tracking reference signal, the third high-level signaling is a high-level signaling configuring a modulation coding scheme threshold, and a resource location of the phase tracking reference signal includes: the non-zero power phase tracks the resource location of the reference signal and the zero power phase tracks the resource location of the reference signal.

Further, the first sending unit 101 is further configured to send data to the second communication node on all or part of the resource location of the non-zero power phase tracking reference signal.

Further, the first sending unit 101 is further configured to send a zero-power signal to the second communication node on all or part of the resource locations of the non-zero-power phase tracking reference signal, where the zero-power signal at least includes: a zero power phase tracking reference signal;

or, the first sending unit 101 is further configured to not send a signal on all or part of the resource location of the non-zero power phase tracking reference signal.

Specifically, for understanding of the signal transmission apparatus provided in the embodiment of the present invention, reference may be made to the description of the signal transmission method embodiment described above, and details of the embodiment of the present invention are not described herein again.

The signal transmission device provided by the embodiment of the invention can effectively estimate the phase noise through the reference signal and reduce the notification of the signaling.

Example ten

An embodiment of the present invention provides a signal transmission apparatus 20, as shown in fig. 11, where the apparatus 20 includes: a second sending unit 201, configured to send data to the second communication node at a resource location of the non-zero power phase tracking reference signal, where a modulation order of the sent data is lower than a modulation order of data in the data transmission region.

Further, the second sending unit 201 is further configured to notify the second communication node through higher layer signaling to send data on the resource location of the non-zero power phase tracking reference signal;

alternatively, the second sending unit 201 is further configured to notify the second communication node through higher layer signaling to send a phase tracking noise reference signal at a resource location of the non-zero power phase tracking reference signal.

Further, the second sending unit 201 is further configured to send a third signaling to the second communication node, where the third signaling carries a resource location of a phase tracking reference signal, and the third signaling includes: second high layer signaling, third high layer signaling and dynamic signaling of modulation coding mode, or the third signaling includes: a second high-level signaling, a third high-level signaling, a dynamic signaling of a modulation coding scheme, and a dynamic signaling of a bandwidth size of an allocated resource, or the third signaling is a fourth high-level signaling, where the second high-level signaling is a high-level signaling whether to configure a phase tracking reference signal, the third high-level signaling is a high-level signaling configuring a modulation coding scheme threshold, and a resource location of the phase tracking reference signal includes: the non-zero power phase tracks the resource location of the reference signal and the zero power phase tracks the resource location of the reference signal.

Specifically, for understanding of the signal transmission apparatus provided in the embodiment of the present invention, reference may be made to the description of the signal transmission method embodiment described above, and details of the embodiment of the present invention are not repeated herein.

EXAMPLE eleven

An embodiment of the present invention provides a signal transmission apparatus 30, as shown in fig. 12, where the apparatus 30 includes: a first receiving unit 301, configured to receive a first signaling sent by a first communication node, where the first signaling is used to indicate a parameter of a phase tracking reference signal and a parameter of a first distance;

wherein, L1 and L2 are both positive integers, and L1 is less than L2.

Further, the first receiving unit 301 is further configured to receive values of L1 and L2 configured by the first communication node through first higher layer signaling.

Further, the first receiving unit 301 is further configured to receive a second signaling sent by the first communication node, where the second signaling carries a resource location of a phase tracking reference signal, and the second signaling includes: second high layer signaling, third high layer signaling and dynamic signaling of modulation coding mode, or the second signaling includes: a second high-level signaling, a third high-level signaling, a dynamic signaling of a modulation coding scheme, and a dynamic signaling of a bandwidth size of an allocated resource, or the second signaling is a fourth high-level signaling, where the second high-level signaling is a high-level signaling whether to configure a phase tracking reference signal, the third high-level signaling is a high-level signaling configuring a modulation coding scheme threshold, and a resource location of the phase tracking reference signal includes: the non-zero power phase tracks the resource location of the reference signal and the zero power phase tracks the resource location of the reference signal.

Further, the first receiving unit 301 is further configured to receive data sent by the first communication node on all or part of the resource location of the non-zero power phase tracking reference signal.

Further, the first receiving unit 301 is further configured to receive a zero-power signal transmitted by the first communication node on all or part of the resource location of the non-zero-power phase tracking reference signal, where the zero-power signal at least includes: the phase of zero power tracks the reference signal.

Further, the apparatus further comprises: a first reporting unit 302, configured to report at least one of the following information to the first communication node: time domain length information and time domain position information;

Example twelve

An embodiment of the present invention provides a signal transmission apparatus 40, as shown in fig. 13, where the apparatus 40 includes: a second receiving unit 401, configured to receive data sent by the first communication node on a resource location of a non-zero power phase tracking reference signal, where a modulation order of the sent data is lower than a modulation order of data in a data transmission region.

Further, the second receiving unit 401 is further configured to receive a higher layer signaling notified by the first communication node, and send data on a resource location of the non-zero power phase tracking reference signal;

Further, the second receiving unit 401 is further configured to receive a third signaling sent by the first communications node, where the third signaling carries a resource location of a phase tracking reference signal, and the third signaling includes: second high layer signaling, third high layer signaling and dynamic signaling of modulation coding mode, or the third signaling includes: a second high-level signaling, a third high-level signaling, a dynamic signaling of a modulation coding scheme, and a dynamic signaling of a bandwidth size of an allocated resource, or the third signaling is a fourth high-level signaling, where the second high-level signaling is a high-level signaling whether to configure a phase tracking reference signal, the third high-level signaling is a high-level signaling configuring a modulation coding scheme threshold, and a resource location of the phase tracking reference signal includes: the non-zero power phase tracks the resource location of the reference signal and the zero power phase tracks the resource location of the reference signal.

Further, the apparatus 40 further comprises: a second reporting unit 402, configured to report first information of the first communication node, where the first information indicates a capability of using low-order modulated data for phase noise estimation.

EXAMPLE thirteen

An embodiment of the present invention provides a first communication node 50, as shown in fig. 14, where the first communication node includes: a first transmitter 501, configured to transmit a first signaling to a second communication node, where the first signaling is used to indicate a parameter of a phase tracking reference signal and a parameter of a first interval;

wherein, L1 and L2 are both positive integers, and L1 is less than L2.

Further, the first communication node further comprises: a processor 502 configured to configure values of L1, L2 to the second communication node through first higher layer signaling.

Further, the first transmitter 501 is further configured to send a second signaling to the second communication node, where the second signaling carries a resource location of a phase tracking reference signal, and the second signaling includes: second high layer signaling, third high layer signaling and dynamic signaling of modulation coding mode, or the second signaling includes: a second high-level signaling, a third high-level signaling, a dynamic signaling of a modulation coding scheme, and a dynamic signaling of a bandwidth size of an allocated resource, or the second signaling is a fourth high-level signaling, where the second high-level signaling is a high-level signaling whether to configure a phase tracking reference signal, the third high-level signaling is a high-level signaling configuring a modulation coding scheme threshold, and a resource location of the phase tracking reference signal includes: the non-zero power phase tracks the resource location of the reference signal and the zero power phase tracks the resource location of the reference signal.

Further, the first transmitter 501 is further configured to transmit data to the second communication node on all or part of the resource locations of the non-zero power phase tracking reference signals.

Further, the first transmitter 501 is further configured to transmit a zero-power signal to the second communication node on all or part of the resource locations of the non-zero-power phase tracking reference signals, where the zero-power signal at least includes: a zero power phase tracking reference signal;

alternatively, the first transmitter 501 is further configured to not transmit signals on all or part of the resources of the resource location of the non-zero power phase tracking reference signal.

Specifically, for understanding of the first communication node provided in the embodiment of the present invention, reference may be made to the description of the foregoing signal transmission method embodiment, and details of the embodiment of the present invention are not repeated herein.

The first communication node provided by the embodiment of the invention can effectively estimate the phase noise through the reference signal, and simultaneously reduces the notification of signaling.

Example fourteen

An embodiment of the present invention provides a first communication node 60, as shown in fig. 15, where the first communication node includes: a second transmitter 601, configured to transmit data to a second communications node at a resource location of a non-zero power phase tracking reference signal, where a modulation order of the transmitted data is lower than a modulation order of data in a data transmission area.

Further, the second transmitter 601 is further configured to notify the second communication node through higher layer signaling to transmit data on the resource location of the non-zero power phase tracking reference signal;

or, the second transmitter 601 is further configured to notify the second communication node to transmit a phase tracking noise reference signal on a resource location of the non-zero power phase tracking reference signal through higher layer signaling.

Further, the second transmitter 601 is further configured to transmit a third signaling to the second communication node, where the third signaling carries a resource location of a phase tracking reference signal, and the third signaling includes: second high layer signaling, third high layer signaling and dynamic signaling of modulation coding mode, or the third signaling includes: a second high-level signaling, a third high-level signaling, a dynamic signaling of a modulation coding scheme, and a dynamic signaling of a bandwidth size of an allocated resource, or the third signaling is a fourth high-level signaling, where the second high-level signaling is a high-level signaling whether to configure a phase tracking reference signal, the third high-level signaling is a high-level signaling configuring a modulation coding scheme threshold, and a resource location of the phase tracking reference signal includes: the non-zero power phase tracks the resource location of the reference signal and the zero power phase tracks the resource location of the reference signal.

Example fifteen

An embodiment of the present invention provides a second communication node 70, as shown in fig. 16, where the second communication node includes: a first receiver 701, configured to receive a first signaling sent by a first communication node, where the first signaling is used to indicate a parameter of a phase tracking reference signal and a parameter of a first distance;

wherein, L1 and L2 are both positive integers, and L1 is less than L2.

Further, the first receiver 701 is further configured to receive values of L1 and L2 configured by the first communication node through first higher layer signaling.

Further, the first receiver 701 is further configured to receive a second signaling sent by the first communication node, where the second signaling carries a resource location of a phase tracking reference signal, and the second signaling includes: the second high-level signaling, the third high-level signaling and the dynamic signaling of the modulation coding mode, or the second signaling comprises: a second high-level signaling, a third high-level signaling, a dynamic signaling of a modulation coding scheme, and a dynamic signaling of a bandwidth size of an allocated resource, or the second signaling is a fourth high-level signaling, where the second high-level signaling is a high-level signaling whether to configure a phase tracking reference signal, the third high-level signaling is a high-level signaling configuring a modulation coding scheme threshold, and a resource location of the phase tracking reference signal includes: the non-zero power phase tracks the resource location of the reference signal and the zero power phase tracks the resource location of the reference signal.

Further, the first receiver 701 is further configured to receive data sent by the first communication node on all or part of the resource locations of the non-zero power phase tracking reference signals.

Further, the first receiver 701 is further configured to receive a zero-power signal transmitted by the first communication node on all or part of the resource locations of the non-zero-power phase tracking reference signal, where the zero-power signal at least includes: the phase of zero power tracks the reference signal.

Further, the second communication node further comprises: a third transmitter 702 for reporting to the first communication node at least one of the following information: time domain length information and time domain position information;

Specifically, for understanding of the second communication node provided in the embodiment of the present invention, reference may be made to the description of the foregoing signal transmission method embodiment, and details of the embodiment of the present invention are not described herein again.

The second communication node provided by the embodiment of the invention can effectively estimate the phase noise through the reference signal, and simultaneously reduces the notification of signaling.

Example sixteen

An embodiment of the present invention provides a second communication node 80, as shown in fig. 17, where the second communication node includes: a second receiver 801, configured to receive data transmitted by the first communication node on a resource location of a non-zero power phase tracking reference signal, where a modulation order of the transmitted data is lower than a modulation order of data in a data transmission region.

Further, the second receiver 801 is further configured to receive a higher layer signaling notified by the first communication node, and send data on a resource location of the non-zero power phase tracking reference signal;

Further, the second receiver 801 is further configured to receive a third signaling sent by the first communications node, where the third signaling carries a resource location of a phase tracking reference signal, and the third signaling includes: second high layer signaling, third high layer signaling and dynamic signaling of modulation coding mode, or the third signaling includes: a second high-level signaling, a third high-level signaling, a dynamic signaling of a modulation coding scheme, and a dynamic signaling of a bandwidth size of an allocated resource, or the third signaling is a fourth high-level signaling, where the second high-level signaling is a high-level signaling whether to configure a phase tracking reference signal, the third high-level signaling is a high-level signaling configuring a modulation coding scheme threshold, and a resource location of the phase tracking reference signal includes: the non-zero power phase tracks the resource location of the reference signal and the zero power phase tracks the resource location of the reference signal.

Further, the second communication node further comprises: a fourth transmitter 802, configured to report the first communication node first information, where the first information indicates a capability of using low-order modulated data for phase noise estimation.

An embodiment of the present invention further provides a computer-readable storage medium, which stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, the method for transmitting signals applied to a first communication node is implemented.

An embodiment of the present invention further provides a computer-readable storage medium, which stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, the method for transmitting signals applied to a second communication node is implemented.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. A method of signal transmission, the method comprising:

2. The method of claim 1, wherein the parameters of the phase tracking reference signal comprise: a parameter indicating whether a non-zero power phase tracking reference signal is present.

3. The method of claim 2, wherein the first spacing is less than a first threshold, and wherein the non-zero power phase tracking reference signal is not present.

4. The method of claim 1, wherein the phase tracking reference signal parameters comprise: the non-zero power phase tracks the time domain length of the reference signal.

5. The method of claim 4,

wherein, L1 and L2 are both positive integers, and L1 is less than L2.

6. The method of claim 5, further comprising:

7. The method of claim 1, 3 or 5, further comprising:

8. The method of claim 7, wherein after said sending the first signaling to the second communication node, the method further comprises:

9. The method of claim 7, wherein after said sending the first signaling to the second communication node, the method further comprises:

or, no signal is transmitted on all or part of the resource position of the non-zero power phase tracking reference signal.

10. A method of signal transmission, the method comprising:

11. The method of claim 10, wherein the parameters of the phase tracking reference signal comprise: a parameter indicating whether a non-zero power phase tracking reference signal is present.

12. The method of claim 11, wherein the non-zero power phase tracking reference signal is not present when the first spacing is less than a first threshold.

13. The method of claim 10, wherein the parameters of the phase tracking reference signal comprise: the non-zero power phase tracks the time domain length of the reference signal.

14. The method of claim 13,

when the first spacing is smaller than a second threshold, the time domain length of the non-zero power phase tracking reference signal is L1 symbols;

wherein, L1 and L2 are both positive integers, and L1 is less than L2.

15. The method of claim 14, further comprising:

receiving values of L1, L2 configured by the first communication node through first higher layer signaling.

16. The method of claim 10, 12 or 14, further comprising:

receiving a second signaling sent by the first communication node, where the second signaling carries a resource location of a phase tracking reference signal, and the second signaling includes: second high layer signaling, third high layer signaling and dynamic signaling of modulation coding mode, or the second signaling includes: a second high-level signaling, a third high-level signaling, a dynamic signaling of a modulation coding scheme, and a dynamic signaling of a bandwidth size of an allocated resource, or the second signaling is a fourth high-level signaling, where the second high-level signaling is a high-level signaling whether to configure a phase tracking reference signal, the third high-level signaling is a high-level signaling configuring a modulation coding scheme threshold, and a resource location of the phase tracking reference signal includes: the non-zero power phase tracks the resource location of the reference signal and the zero power phase tracks the resource location of the reference signal.

17. The method according to claim 16, further comprising, after said receiving the first signaling sent by the first communication node:

18. The method according to claim 16, further comprising, after said receiving the first signaling sent by the first communication node:

19. The method of any one of claims 10 to 18, further comprising:

the time domain position information is: and when the first distance is smaller than a fourth threshold, the non-zero power phase supported by the second communication node tracks the last time domain position of the reference signal.

20. A signal transmission apparatus, characterized in that the apparatus comprises: a first sending unit, configured to send a first signaling to a second communication node, where the first signaling is used to indicate a parameter of a phase tracking reference signal and a parameter of a first interval;

21. The apparatus of claim 20, wherein the parameters of the phase tracking reference signal comprise: a parameter indicating whether a non-zero power phase tracking reference signal is present.

22. The apparatus of claim 21, wherein the first spacing is less than a first threshold, and wherein the non-zero power phase tracking reference signal is not present.

23. The apparatus of claim 20, wherein the parameters of the phase tracking reference signal comprise: the non-zero power phase tracks the time domain length of the reference signal.

24. The apparatus of claim 23, wherein the first spacing is smaller than a second threshold, and the time domain length of the non-zero power phase tracking reference signal is L1 symbols;

wherein, L1 and L2 are both positive integers, and L1 is less than L2.

25. The apparatus of claim 20, 22 or 24, wherein the first sending unit is further configured to send a second signaling to the second communication node, and the second signaling carries resource locations of phase tracking reference signals, and the second signaling includes: second high layer signaling, third high layer signaling and dynamic signaling of modulation coding mode, or the second signaling includes: a second high-level signaling, a third high-level signaling, a dynamic signaling of a modulation coding scheme, and a dynamic signaling of a bandwidth size of an allocated resource, or the second signaling is a fourth high-level signaling, where the second high-level signaling is a high-level signaling whether to configure a phase tracking reference signal, the third high-level signaling is a high-level signaling configuring a modulation coding scheme threshold, and a resource location of the phase tracking reference signal includes: the non-zero power phase tracks the resource location of the reference signal and the zero power phase tracks the resource location of the reference signal.

26. A signal transmission apparatus, characterized in that the apparatus comprises: a first receiving unit, configured to receive a first signaling sent by a first communication node, where the first signaling is used to indicate a parameter of a phase tracking reference signal and a parameter of a first distance;

27. The apparatus of claim 26, wherein the parameters of the phase tracking reference signal comprise: a parameter indicating whether a non-zero power phase tracking reference signal is present.

28. The apparatus of claim 26 or 27, wherein the parameters of the phase tracking reference signal comprise: the non-zero power phase tracks the time domain length of the reference signal.

29. The apparatus of any one of claims 26 to 28, further comprising: a first reporting unit, configured to report to the first communication node at least one of the following information: time domain length information and time domain position information;

30. A first communications node, characterized in that the first communications node comprises: a first transmitter, configured to transmit a first signaling to a second communication node, where the first signaling is used to indicate a parameter of a phase tracking reference signal and a parameter of a first interval;

31. The first communications node of claim 30, wherein the parameters of the phase tracking reference signal include: a parameter indicating whether a non-zero power phase tracking reference signal is present.

32. The first communications node of claim 30 or 31, wherein the parameters of the phase tracking reference signal comprise: the non-zero power phase tracks the time domain length of the reference signal.

33. A second communications node, characterized in that the second communications node comprises: a first receiver, configured to receive a first signaling sent by a first communication node, where the first signaling is used to indicate a parameter of a phase tracking reference signal and a parameter of a first distance;

34. The second communications node of claim 33, wherein the parameters of the phase tracking reference signal include: a parameter indicating whether a non-zero power phase tracking reference signal is present.

35. The second communications node of claim 33 or 34, wherein the parameters of the phase tracking reference signal comprise: the non-zero power phase tracks the time domain length of the reference signal.

36. A computer-readable storage medium storing computer-executable instructions, which when executed by a processor implement the steps of the signal transmission method according to any one of claims 1 to 9.

37. A computer-readable storage medium storing computer-executable instructions, which when executed by a processor implement the steps of the signal transmission method according to any one of claims 10 to 19.