CN115334578B

CN115334578B - Terminal interference measuring method, system, electronic device and readable storage medium

Info

Publication number: CN115334578B
Application number: CN202211256897.5A
Authority: CN
Inventors: 赵喆; 魏浩
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2022-10-14
Filing date: 2022-10-14
Publication date: 2023-01-24
Anticipated expiration: 2042-10-14
Also published as: CN115334578A

Abstract

The application discloses a terminal interference measurement method, a system, an electronic device and a readable storage medium, which are applied to a terminal device, wherein the terminal interference measurement method comprises the following steps: receiving interference measurement indication information, wherein the interference measurement indication information is used for indicating port time-frequency resource positions of demodulation reference signals of all terminal equipment participating in a multi-user multi-input multi-output system; and determining the whole interference noise information of the terminal equipment on the time frequency resource positions of all ports according to the interference measurement indication information. The method and the device solve the technical problem that in the prior art, the performance of the multi-user multi-input multi-output system is reduced due to the fact that interference between terminals cannot be completely eliminated.

Description

Terminal interference measuring method, system, electronic device and readable storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and a system for measuring terminal interference, an electronic device, and a readable storage medium.

Background

In wireless communication, a base station uses a multi-user multiple-input multiple-output system to simultaneously serve multiple terminals on the same time-frequency resource, and in order to improve the performance of the multi-user multiple-input multiple-output system, the base station needs to eliminate interference between terminals during transmission through precoding, which requires that the base station can obtain more accurate downlink channel information. However, in actual communication, due to the mismatch of the radio frequency link, the channel delay, the doppler shift, and the quantization error, there is always an error between the downlink channel information obtained by the base station and the channel during actual downlink transmission. Thus, when the base station transmits the downlink channel through precoding, the interference between the terminals cannot be completely eliminated, thereby causing the performance degradation of the multi-user multiple-input multiple-output system.

Disclosure of Invention

The present application mainly aims to provide a method, a system, an electronic device and a readable storage medium for measuring interference of a terminal, and aims to solve the technical problem that in the prior art, the performance of a multi-user multiple-input multiple-output system is reduced due to the fact that interference between terminals cannot be completely eliminated.

In order to achieve the above object, the present application provides a terminal interference measurement method, which is applied to a terminal device, and the terminal interference measurement method includes:

receiving interference measurement indication information, wherein the interference measurement indication information is used for indicating port time-frequency resource positions of demodulation reference signals of all terminal equipment participating in a multi-user multi-input multi-output system;

and determining the overall interference noise information of the terminal equipment on the time-frequency resource positions of all ports according to the interference measurement indication information.

Optionally, the step of determining, according to the interference measurement indication information, overall interference noise information of the terminal device at all port time-frequency resource positions includes:

determining the positions of port time-frequency resources of demodulation reference signals of all terminal equipment participating in the multi-user multi-input multi-output system according to the interference measurement indication information;

and performing corresponding channel information estimation and noise estimation according to the time-frequency resource positions of the ports respectively, and determining the overall interference noise information of the terminal equipment on the time-frequency resource positions of all the ports.

Optionally, the step of performing channel information estimation and noise estimation respectively according to each port time-frequency resource location, and determining the overall interference noise information of the terminal device at all port time-frequency resource locations includes:

receiving demodulation reference signals transmitted on the time-frequency resource positions of the ports;

and performing corresponding channel information estimation and noise estimation according to the downlink channel coefficient information corresponding to the terminal equipment and each demodulation reference signal respectively, and determining the overall interference noise information of the terminal equipment on all port time frequency resource positions.

Optionally, each demodulation reference signal includes a first precoded signal received by the terminal device and a second precoded signal received by at least one other terminal device participating in the multi-user multiple-input multiple-output system, and the downlink channel coefficient information includes a downlink channel coefficient matrix,

the step of performing corresponding channel information estimation and noise estimation respectively according to the downlink channel coefficient information corresponding to the terminal device and each demodulation reference signal, and determining the overall interference noise information of the terminal device at all port time-frequency resource positions includes:

estimating channel noise in a channel corresponding to the terminal equipment according to the downlink channel coefficient matrix and the first pre-coded signal;

estimating interference channel information and interference channel noise of the channel information of the other terminal equipment in a channel corresponding to the terminal equipment according to the downlink channel coefficient matrix and the second pre-coded signal;

and determining the whole interference noise information of the terminal equipment on all port time-frequency resource positions according to the channel noise, the interference channel information and the interference channel noise.

Optionally, the step of determining, according to the channel noise, the information of each interference channel, and the noise of each interference channel, the overall interference noise information of the terminal device at the time-frequency resource location of all ports includes:

calculating a first covariance matrix of interference noise on a port time-frequency resource position corresponding to the terminal equipment according to the interference channel information and the channel noise;

calculating a second covariance matrix of interference noise on a time-frequency resource position of a port corresponding to each other terminal device according to each interference channel information and each interference channel noise;

and taking the first covariance matrix and each second covariance matrix together as overall interference noise information.

Optionally, after the step of determining the overall interference noise information of the terminal device at the time-frequency resource locations of all ports according to the interference measurement indication information, the method for measuring interference of a terminal device further includes:

and carrying out interference suppression and/or interference projection elimination on the received signal data according to the overall interference noise information.

In order to achieve the above object, the present application further provides a terminal interference measurement method, which is applied to a network side device, where the terminal interference measurement method includes:

and sending interference measurement indication information, wherein the interference measurement indication information is used for indicating port time-frequency resource positions of demodulation reference signals of all terminal equipment participating in the multi-user multi-input multi-output system to corresponding terminal equipment, and the terminal equipment determines the whole interference noise information of the terminal equipment on all the port time-frequency resource positions according to the interference measurement indication information.

Optionally, after sending the interference measurement indication information, the terminal interference measurement method further includes:

and sending signal data, wherein the terminal equipment carries out interference suppression and/or interference projection elimination on the signal data according to the overall interference noise information.

In order to achieve the above object, the present application further provides a terminal interference measurement system, where the terminal interference measurement system includes:

the system comprises network side equipment and terminal equipment, wherein the network side equipment is used for sending interference measurement indication information, and the interference measurement indication information is used for indicating port time-frequency resource positions of demodulation reference signals of all the terminal equipment participating in a multi-user multi-input multi-output system to the corresponding terminal equipment;

and the terminal equipment is used for receiving the interference measurement indication information and determining the whole interference noise information of the terminal equipment on the time frequency resource positions of all ports according to the interference measurement indication information.

Optionally, the terminal device is further configured to:

Optionally, each demodulation reference signal includes a first precoded signal received by the terminal device and a second precoded signal received by at least one other terminal device participating in the multi-user multiple-input multiple-output system, where the downlink channel coefficient information includes a downlink channel coefficient matrix, and the terminal device is further configured to:

Optionally, the terminal device is further configured to:

calculating a second covariance matrix of interference noise on a port time-frequency resource position corresponding to each other terminal device according to each interference channel information and each interference channel noise;

Optionally, the terminal device is further configured to:

Optionally, the network side device is further configured to:

The present application further provides an electronic device, the electronic device including: a memory, a processor and a program of the terminal interference measurement method stored on the memory and executable on the processor, the program of the terminal interference measurement method when executed by the processor may implement the steps of the terminal interference measurement method as described above.

The present application also provides a computer-readable storage medium having a program stored thereon for implementing the method for measuring interference of a terminal, where the program of the method for measuring interference of a terminal implements the steps of the method for measuring interference of a terminal as described above when executed by a processor.

The terminal equipment receives interference measurement indication information, wherein the interference measurement indication information is used for indicating port time-frequency resource positions of demodulation reference signals of all terminal equipment participating in a multi-user multi-input multi-output system, so that the terminal equipment determines integral interference noise information of the terminal equipment on all the port time-frequency resource positions by using the interference measurement indication information, the integral interference noise information comprises noise interference information of other terminal equipment participating in the multi-user multi-input multi-output system to the terminal equipment, measurement of interference noise among the terminal equipment in the multi-user multi-input multi-output system is achieved, interference among the terminal equipment in the multi-user multi-input multi-output system can be eliminated by using the integral interference noise information, and performance of the multi-user multi-input multi-output system is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

Fig. 1 is a schematic flowchart of a first embodiment of a method for measuring interference of a terminal according to the present application;

fig. 2 is a flowchart illustrating a second embodiment of a method for measuring interference of a terminal according to the present application;

fig. 3 is a schematic configuration diagram of a network side device for DMRS port time-frequency resource positions of 2 terminal devices in an embodiment of the terminal interference measurement method of the present application;

fig. 4 is a schematic configuration diagram of a network side device for DMRS port time-frequency resource locations of 2 terminal devices in another embodiment of the terminal interference measurement method of the present application;

fig. 5 is a schematic configuration diagram of a network side device for DMRS port time-frequency resource positions of 3 terminal devices in an embodiment of the terminal interference measurement method of the present application;

fig. 6 is a schematic structural diagram of a hardware operating environment related to a terminal interference measurement method in the embodiment of the present application.

The implementation of the objectives, functional features, and advantages of the present application will be further described with reference to the accompanying drawings.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments of the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the present application.

Referring to fig. 1, an embodiment of the present application provides a terminal interference measurement method, which is applied to a terminal device, and in a first embodiment of the terminal interference measurement method of the present application, the terminal interference measurement method includes:

step S10, receiving interference measurement indication information, wherein the interference measurement indication information is used for indicating the port time-frequency resource positions of demodulation reference signals of all terminal equipment participating in a multi-user multi-input multi-output system;

and step S20, determining the overall interference noise information of the terminal equipment on the time-frequency resource positions of all ports according to the interference measurement indication information.

In this embodiment, it should be noted that the multi-user multiple-input multiple-output (MU-MIMO) system includes a network-side device and at least one terminal device, where the network-side device may be a base station, and the terminal device may be a mobile phone or a computer. Currently, in a multi-user multiple-input multiple-output system, a base station indicates port configuration of corresponding scheduling of each terminal through a downlink control instruction, and DMRS (Demodulation Reference Signal) ports corresponding to the base station and transmitted to each terminal are orthogonal to each other. Therefore, the terminal only performs noise estimation on the port channel information corresponding to the terminal, and does not perform estimation on interference signals of other terminals, so that interference between terminals cannot be eliminated, thereby causing system performance reduction.

As an example, steps S10 to S20 include: receiving interference measurement indication information sent by network side equipment, wherein the interference measurement indication information is used for indicating port time-frequency resource positions of demodulation reference signals of all terminal equipment participating in a multi-user multi-input multi-output system; and performing corresponding channel information estimation and noise estimation according to the demodulation reference signal transmitted on each port time-frequency resource position, and determining the overall interference noise information of the terminal equipment on all port time-frequency resource positions, wherein the overall interference noise information may include the interference noise information of other terminal equipment participating in the multi-user multiple-input multiple-output system on the terminal equipment and the noise information on a channel corresponding to the terminal equipment.

As an example, the overall interference noise information may be statistical information of interference noise of the terminal device at all port time-frequency resource positions, and the statistical information may be information of covariance, mean, or standard deviation.

After the step of determining the overall interference noise information of the terminal device at the time-frequency resource positions of all ports according to the interference measurement indication information, the terminal interference measurement method further includes:

and step S30, according to the overall interference noise information, carrying out interference suppression and/or interference projection elimination on the received signal data.

In this embodiment, it should be noted that the overall interference noise information may be one or more of a covariance matrix of interference noise or a main eigenvector of the interference noise, and according to the overall interference noise information, interference suppression and/or interference projection elimination are performed on the received signal data, so as to improve the accuracy of the received signal data, and thus improve the performance of the user mimo system; the interference suppression mode can be interference suppression combination or interference whitening, etc.

The embodiment of the application provides a terminal interference measurement method, wherein a terminal device receives interference measurement indication information, wherein the interference measurement indication information is used for indicating port time-frequency resource positions of demodulation reference signals of all terminal devices participating in a multi-user multi-input multi-output system, so that the terminal device determines overall interference noise information of the terminal devices on all the port time-frequency resource positions by using the interference measurement indication information, the overall interference noise information comprises noise interference information of other terminal devices participating in the multi-user multi-input multi-output system on the terminal device, measurement of interference noise between the terminal devices in the multi-user multi-input multi-output system is realized, interference between the multi-user terminal devices in the multi-user multi-input multi-output system can be eliminated by using the overall interference noise information, and performance of the multi-input multi-output system is improved.

Further, referring to fig. 2, in another embodiment of the present application, the same or similar contents as those in the above embodiment may be referred to the above description, and are not repeated herein. The step of determining the overall interference noise information of the terminal device at the time-frequency resource positions of all ports according to the interference measurement indication information includes:

step S21, determining the port time-frequency resource positions of demodulation reference signals of all terminal equipment participating in the multi-user multi-input multi-output system according to the interference measurement indication information;

and step S22, respectively carrying out corresponding channel information estimation and noise estimation according to the time-frequency resource positions of the ports, and determining the whole interference noise information of the terminal equipment on the time-frequency resource positions of all the ports.

As an example, the downlink channel coefficient information may be a downlink channel coefficient matrix from a network side device to a terminal device. And each port time-frequency resource position comprises a first port time-frequency resource position corresponding to the terminal equipment and a second port time-frequency resource position of at least one other terminal equipment participating in the multi-user multi-input multi-output system. The overall interference noise information comprises first interference noise information of the terminal equipment on a first port time frequency resource position and second interference noise information on a second port time frequency resource position.

Steps S21 to S22 include: determining a first port time frequency resource position corresponding to the terminal equipment and a second port time frequency resource position of other terminal equipment participating in multi-user multiple input multiple output according to the interference measurement indication information; receiving a first demodulation reference signal transmitted on a first port time frequency resource position and a second demodulation reference signal transmitted on a second port time frequency resource position; and respectively estimating first interference noise information of the terminal equipment on the time frequency resource position of the first port and second interference noise information of the terminal equipment on the time frequency resource position of the second port according to the downlink channel coefficient matrix corresponding to the terminal equipment, the first demodulation reference signal and the second demodulation reference signal.

Wherein, the step of performing corresponding channel information estimation and noise estimation according to the time-frequency resource position of each port respectively, and determining the whole interference noise information of the terminal equipment on all the time-frequency resource positions of the ports comprises:

step S221, receiving the demodulation reference signal transmitted on the time frequency resource position of each port;

step S222, performing corresponding channel information estimation and noise estimation according to the downlink channel coefficient information corresponding to the terminal device and each demodulation reference signal, and determining the overall interference noise information of the terminal device at the time-frequency resource positions of all ports.

As an example, steps S221 to S222 include: receiving a first demodulation reference signal transmitted on a first port time frequency resource position and a second demodulation reference signal transmitted on a second port time frequency resource position; performing channel information estimation and noise estimation according to the downlink channel coefficient matrix corresponding to the terminal device and the first demodulation reference signal to obtain channel noise in a channel corresponding to the terminal device; estimating interference channel information and interference noise information of other terminal equipment to the terminal equipment according to a downlink channel coefficient matrix corresponding to the terminal equipment and a second demodulation reference signal; calculating first interference noise information of the terminal equipment on the time-frequency resource position of the first port according to the channel noise and the interference noise information; and calculating second interference noise information of the terminal equipment at the time-frequency resource position of the second port according to the interference channel information and the interference noise information.

As an example, the overall interference noise information may also be obtained by aggregating the first interference noise information and the second interference noise, and the aggregation may be a weighted sum or a weighted average.

Wherein each demodulation reference signal comprises a first pre-coded signal received by the terminal device and a second pre-coded signal received by at least one other terminal device participating in the multi-user multiple-input multiple-output system, and the downlink channel coefficient information comprises a downlink channel coefficient matrix,

step A10, estimating channel noise in a channel corresponding to the terminal device according to the downlink channel coefficient matrix and the first pre-coded signal;

step A20, estimating interference channel information and interference channel noise of the channel information of each other terminal device in the channel corresponding to the terminal device according to the downlink channel coefficient matrix and the second pre-coded signal;

step A30, determining the overall interference noise information of the terminal device on the time-frequency resource positions of all ports according to the channel noise, the information of each interference channel and the noise of each interference channel.

In this embodiment, it should be noted that the first demodulation reference signal may be a first precoded signal, the first precoded signal may include a first noiseless precoding matrix without noise terms and a first noisy precoding matrix with noise terms, and the second precoded signal may include a second noiseless precoding matrix without noise terms and a second noisy precoding matrix with noise terms. In actual wireless communication, a network side device transmits a precoded signal in a noise-free environment, and a terminal device can receive the noiseless precoded signal, otherwise, the terminal device receives the precoded signal with noise.

As an example, steps a10 to a30 include: estimating channel information according to the downlink channel coefficient matrix and the first noise-free pre-coding matrix to obtain a channel information estimation result; performing noise estimation according to the channel information estimation result, the downlink channel coefficient matrix and the first noisy pre-coding matrix to obtain channel noise in a channel corresponding to the terminal equipment; estimating channel information according to the downlink channel coefficient matrix and the second noiseless pre-coding matrix, and estimating to obtain interference signals of other terminal equipment participating in the multi-user multi-input multi-output system to the terminal equipment to obtain interference signal information; estimating channel information and the interference signal information according to the downlink channel coefficient matrix and the second noiseless pre-coding matrix to obtain the interference signal noise of other terminal equipment participating in the multi-user multi-input multi-output system to the terminal equipment; and calculating a covariance matrix of interference noise of the terminal equipment on all port time-frequency resource positions according to the channel noise, the interference channel information and the interference channel noise to obtain first interference noise information of the terminal equipment on the first port time-frequency resource position and second interference noise information of the terminal equipment on the second port time-frequency resource position.

The step of determining the overall interference noise information of the terminal device at the time-frequency resource positions of all ports according to the channel noise, the information of each interference channel and the noise of each interference channel comprises:

step A31, according to the interference channel information and the channel noise, calculating a first covariance matrix of interference noise on a time-frequency resource position of a port corresponding to the terminal device;

step A32, according to each interference channel information and each interference channel noise, calculating a second covariance matrix of interference noise on a port time-frequency resource position corresponding to each other terminal device;

step a33, using the first covariance matrix and each of the second covariance matrices together as overall interference noise information.

As an example, the interference channel information may be an interference signal matrix, the channel noise may be a channel noise vector, and the interference channel noise may be an interference channel noise vector. The first interference noise information may be a first covariance matrix of interference noise at a first port time-frequency resource position corresponding to the terminal device, and the second interference noise information may be a second covariance matrix of interference noise at a second port time-frequency resource position corresponding to another terminal device.

The steps a31 to a33 include: carrying out interpolation filtering on the interference signal matrix to obtain an interference signal matrix subjected to interpolation filtering; calculating a first covariance matrix of interference noise on a port time-frequency resource position corresponding to the terminal equipment according to the interference signal matrix subjected to interpolation filtering, a transposed matrix corresponding to the interference signal matrix subjected to interpolation filtering, a channel noise vector and a transposed vector corresponding to the channel noise vector; calculating a second covariance matrix of interference noise on a port time-frequency resource position corresponding to each other terminal device according to the interference signal matrix, the transposed matrix corresponding to the interference signal matrix, the interference channel noise vector and the transposed vector corresponding to the interference channel noise vector; and taking the first covariance matrix and each second covariance matrix together as overall interference noise information.

As an example, assuming that a network side device schedules 2 terminal devices for multi-user multiple-input multiple-output transmission, a base station configures

Root antenna, each terminal configured

The number of ports scheduled by each terminal is

I.e. each terminal device schedules 1 stream, further assuming the network side device to the second

The downlink channel coefficient matrix of each terminal device is

Network side equipment sending and receiving

A precoding matrix associated with each terminal device is

。

Further referring to fig. 3, fig. 3 is a schematic configuration diagram of an embodiment of a network side device for DMRS port time-frequency Resource positions of 2 terminal devices, in fig. 3, 1 RB (Resource Block, time-frequency Resource Block) is taken as an example, RE (Resource Element, time-frequency Resource unit) with an even number is DMRS port 0 and is allocated to the 1 st terminal device, RE with an odd number is DMRS port 1 and is allocated to the 2 nd terminal device, 2 DMRS ports are frequency-divided in a frequency domain, and a + number indicates that an OCC code thereof is +1. Based on the above, for the time-frequency resource position of the 1 st terminal device at DMRS port 0, corresponding channel information estimation and noise estimation are performed to obtain an estimated channel signal matrix

，

And obtaining an estimated channel noise vector

(ii) a For the time-frequency resource position of the 1 st terminal device at the DMRS port 1, corresponding channel information estimation and noise estimation are carried out to obtain an estimated interference signal matrix

，

And obtaining an estimated interference channel noise vector

(ii) a Since the interfering signal is uncorrelated with noise, for the 1 st terminal device, the time-frequency resource bit at DMRS port 0First covariance matrix of interference noise

Second covariance matrix of interference noise at time-frequency resource location of DMRS port 1

Wherein, in the step (A),

in order to interpolate the filtered interference signal matrix,

is a transposed symbol; for the 2 nd terminal device, the corresponding terminal interference measurement process is the same as the above process, and is not described herein again.

Root antenna, each terminal configured

The number of ports scheduled by each terminal is

I.e. each terminal device schedules 2 streams, further assuming the network side device to the second

The downlink channel coefficient matrix of each terminal device is

Network side device sending and receiving

Terminal device dependent precoding matrixIs composed of

。

Further referring to fig. 4, fig. 4 is a schematic configuration diagram of a network side device for an embodiment of time-frequency resource positions of DMRS ports of 2 terminal devices, where in fig. 4, 1 RB is taken as an example, REs with even numbers are orthogonal superposition of DMRS port 0 and OCC code of port 1 and are allocated to the 1 st terminal device, REs with odd numbers are orthogonal superposition of DMRS port 2 and OCC code of port 3 and are allocated to the 2 nd terminal device, DMRS ports of the 2 terminal devices are frequency-division in a frequency domain, DMRS ports of each terminal device are code-division, and a + number indicates that its OCC code is +1, and a-number indicates that its OCC code is-1. Based on the above, for the time-frequency resource positions of the 1 st terminal device at

DMRS ports

0 and 1, corresponding channel information estimation and noise estimation are performed to obtain an estimated channel signal matrix

，

And obtaining an estimated channel noise vector

(ii) a For the time frequency resource positions of the 1 st terminal device at the

DMRS ports

2 and 3, corresponding channel information estimation and noise estimation are carried out to obtain an estimated interference signal matrix

，

And obtaining an estimated interference channel noise vector

(ii) a Since the interfering signal and noise are uncorrelated, for the 1 st terminal device, the first covariance matrix of the interfering noise at the time-frequency resource locations of

DMRS ports

0 and 1

Second covariance matrix of interference noise at time-frequency resource locations of

DMRS ports

2 and 3

Wherein, in the process,

to interpolate the filtered interference signal matrix,

As an example, suppose that a network side device schedules 3 terminal devices for multi-user multiple-input multiple-output transmission, and a base station configures

Root antenna, each terminal configured

The number of ports scheduled by each terminal is

I.e. each terminal device schedules 2 streams, further assuming network side device to the first

The downlink channel coefficient matrix of each terminal device is

Network side equipment sending and receiving

A precoding matrix associated with each terminal device is

。

Further referring to fig. 5, fig. 5 is a schematic configuration diagram of an embodiment of time-frequency resource positions of DMRS ports of 3 terminal devices by a network side device, where in fig. 5, 1 RB is taken as an example, REs with

serial numbers

0,1,6,7 are orthogonal superposition of DMRS port 0 and OCC code of port 1, and are allocated to a1 st terminal device, REs with

serial numbers

2,3,8,9 are orthogonal superposition of DMRS port 2 and OCC code of port 3, and are allocated to a2 nd terminal device, REs with

serial numbers

4,5, 10, 11 are orthogonal superposition of DMRS port 4 and OCC code of port 5, and are allocated to a3 rd terminal device, where DMRS ports of the 3 terminal devices are frequency-divided, DMRS ports of each terminal device are code-divided, and a + number indicates that its OCC code is +1, and a-number indicates that its OCC code is-1. Based on the method, corresponding channel information estimation and noise estimation are carried out on the time-frequency resource positions of the 1 st terminal equipment at the DMRS ports 0 and 1 to obtain an estimated channel signal matrix

，

And obtaining an estimated channel noise vector

(ii) a For the time-frequency resource positions of the 1 st terminal device at the DMRS ports 2 and 3, corresponding channel information estimation and noise estimation are carried out to obtain an interference signal matrix of the 2 nd terminal device to the 1 st terminal device

，

And obtaining an estimated interference channel noise vector

(ii) a For the 1 st terminal equipmentPerforming corresponding channel information estimation and noise estimation at the time-frequency resource positions of DMRS ports 4 and 5 to obtain an interference signal matrix of the 3 rd terminal device to the 1 st terminal device

，

And obtaining an estimated interference channel noise vector

(ii) a Since the interfering signal and noise are uncorrelated, for the 1 st terminal device, the first covariance matrix of the interfering noise at the time-frequency resource locations of DMRS ports 0 and 1

For the 1 st terminal device, a second covariance matrix of interference noise at time-frequency resource positions of DMRS ports 2 and 3

For the 1 st terminal device, a second covariance matrix of interference noise at time-frequency resource positions of DMRS ports 4 and 5

Wherein, in the step (A),

and

to interpolate the filtered interference signal matrix,

is a transposed symbol; for the 2 nd terminal device and the 3 rd terminal device, the corresponding terminal interference measurement process is the same as the above process, and is not described herein again.

Further, an embodiment of the present application further provides a terminal interference measurement method, which is applied to a network side device, and in a first embodiment of the terminal interference measurement method of the present application, the terminal interference measurement method includes:

and step B10, sending interference measurement indication information, wherein the interference measurement indication information is used for indicating port time-frequency resource positions of demodulation reference signals of all terminal equipment participating in the multi-user multi-input multi-output system to corresponding terminal equipment, and the terminal equipment determines the whole interference noise information of the terminal equipment on all the port time-frequency resource positions according to the interference measurement indication information.

In this embodiment, it should be noted that the network-side device may be a base station, and the network-side device may indicate, to each terminal device, port time-frequency resource positions of demodulation reference signals of all terminal devices participating in the mu-mimo system, so that the terminal device may determine, according to the interference measurement indication information, overall interference noise information of the terminal device at all the port time-frequency resource positions, where a specific implementation process of determining the overall interference noise information at all the port time-frequency resource positions by the terminal device may refer to specific contents in the above steps S10 to S20 and their refining steps, and details are not repeated here.

After sending the interference measurement indication information, the terminal interference measurement method further includes:

and step B20, sending signal data, wherein the terminal equipment carries out interference suppression and/or interference projection elimination on the signal data according to the overall interference noise information.

In this embodiment, it should be noted that the overall interference noise information may be one or more of a covariance matrix of the interference noise or a main eigenvector of the interference noise, the terminal device may perform interference suppression and/or interference projection cancellation on the signal data sent by the network side device according to the overall interference noise information, and the interference suppression manner may be interference suppression combining or interference whitening, which may improve the accuracy of the signal data received by the terminal device, thereby improving the performance of the user mimo system.

The embodiment of the application provides a terminal interference measurement method, that is, sending interference measurement indication information, where the interference measurement indication information is used to indicate, to a corresponding terminal device, port time-frequency resource positions of demodulation reference signals of all terminal devices participating in a multi-user multi-input multi-output system, and thus, the terminal device determines, by using the interference measurement indication information, overall interference noise information of the terminal device at all the port time-frequency resource positions, and measurement of interference noise between the terminal devices in the multi-user multi-input multi-output system is achieved, so that interference between the terminal devices in the multi-user multi-input multi-output system can be eliminated by using the overall interference noise information, and performance of the multi-user multi-input multi-output system is improved.

Optionally, the terminal device is further configured to:

Optionally, each demodulation reference signal includes a first precoded signal received by the terminal device and a second precoded signal received by at least one other terminal device participating in the multi-user multiple-input multiple-output system, the downlink channel coefficient information includes a downlink channel coefficient matrix, and the terminal device is further configured to:

Optionally, the terminal device is further configured to:

Optionally, the network-side device is further configured to:

The terminal interference measurement system provided by the application adopts the terminal interference measurement method in the embodiment, and solves the technical problem that the performance of the multi-user multi-input multi-output system is reduced because the interference between terminals cannot be completely eliminated. Compared with the prior art, the beneficial effects of the terminal interference measurement system provided by the embodiment of the present application are the same as those of the terminal interference measurement method provided by the above embodiment, and other technical features in the terminal interference measurement system are the same as those disclosed by the method of the above embodiment, which are not described herein again.

An embodiment of the present application provides an electronic device, and the electronic device includes: at least one processor; and a memory communicatively coupled to the at least one processor; the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method for measuring interference of a terminal according to the first embodiment.

Referring now to FIG. 6, shown is a block diagram of an electronic device suitable for use in implementing embodiments of the present disclosure. The electronic devices in the embodiments of the present disclosure may include, but are not limited to, mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), in-vehicle terminals (e.g., car navigation terminals), and the like, and fixed terminals such as digital TVs, desktop computers, and the like. The electronic device shown in fig. 6 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present disclosure.

As shown in fig. 6, the electronic device may include a processing means (e.g., a central processing unit, a graphic processor, etc.) that can perform various appropriate actions and processes according to a program stored in a Read Only Memory (ROM) or a program loaded from a storage means into a Random Access Memory (RAM). In the RAM, various programs and data necessary for the operation of the electronic apparatus are also stored. The processing device, the ROM, and the RAM are connected to each other through a bus. An input/output (I/O) interface is also connected to the bus.

Generally, the following systems may be connected to the I/O interface: input devices including, for example, touch screens, touch pads, keyboards, mice, image sensors, microphones, accelerometers, gyroscopes, and the like; output devices including, for example, liquid Crystal Displays (LCDs), speakers, vibrators, and the like; storage devices including, for example, magnetic tape, hard disk, etc.; and a communication device. The communication means may allow the electronic device to communicate wirelessly or by wire with other devices to exchange data. While the figures illustrate an electronic device with various systems, it is to be understood that not all illustrated systems are required to be implemented or provided. More or fewer systems may alternatively be implemented or provided.

In particular, according to an embodiment of the present disclosure, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method illustrated in the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network via the communication means, or installed from a storage means, or installed from a ROM. The computer program, when executed by a processing device, performs the functions defined in the methods of the embodiments of the present disclosure.

The electronic device provided by the application adopts the terminal interference measurement method in the above embodiment, so that the technical problem of performance reduction of the multi-user multi-input multi-output system caused by incapability of completely eliminating the interference between terminals is solved. Compared with the prior art, the beneficial effects of the electronic device provided by the embodiment of the present application are the same as the beneficial effects of the terminal interference measurement method provided by the above embodiment, and other technical features in the electronic device are the same as those disclosed by the above embodiment method, which are not described herein again.

It should be understood that portions of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof. In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

The present embodiment provides a computer-readable storage medium having computer-readable program instructions stored thereon for performing the method for terminal interference measurement in the first embodiment.

The computer readable storage medium provided by the embodiments of the present application may be, for example, a usb disk, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, or device, or a combination of any of the above. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present embodiment, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, or device. Program code embodied on a computer readable storage medium may be transmitted using any appropriate medium, including but not limited to: electrical wires, optical cables, RF (radio frequency), etc., or any suitable combination of the foregoing.

The computer-readable storage medium may be embodied in an electronic device; or may be present alone without being incorporated into the electronic device.

The computer-readable storage medium carries one or more programs which, when executed by an electronic device, cause the electronic device to: receiving interference measurement indication information, wherein the interference measurement indication information is used for indicating port time-frequency resource positions of demodulation reference signals of all terminal equipment participating in a multi-user multi-input multi-output system; and determining the whole interference noise information of the terminal equipment on the time frequency resource positions of all ports according to the interference measurement indication information.

Or sending interference measurement indication information, where the interference measurement indication information is used to indicate, to a corresponding terminal device, port time-frequency resource positions of demodulation reference signals of all terminal devices participating in the mu-mimo system, and the terminal device determines, according to the interference measurement indication information, overall interference noise information of the terminal device at all the port time-frequency resource positions.

Computer program code for carrying out operations for aspects of the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

The modules described in the embodiments of the present disclosure may be implemented by software or hardware. Wherein the names of the modules do not in some cases constitute a limitation of the unit itself.

The computer readable storage medium storing the computer readable program instructions for executing the method for measuring the interference of the terminal solves the technical problem that the performance of the multi-user multi-input multi-output system is reduced due to the fact that the interference between the terminals cannot be completely eliminated. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the embodiment of the present application are the same as those of the terminal interference measurement method provided by the above embodiment, and are not described herein again.

The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all equivalent structures or equivalent processes, which are directly or indirectly applied to other related technical fields, and which are not limited by the present application, are also included in the scope of the present application.

Claims

1. A terminal interference measurement method is applied to terminal equipment, and is characterized in that the terminal interference measurement method comprises the following steps:

receiving demodulation reference signals transmitted on the time-frequency resource positions of the ports, wherein each demodulation reference signal comprises a first pre-coded signal received by the terminal equipment and a second pre-coded signal received by at least one other terminal equipment participating in the multi-user multi-input multi-output system, and the downlink channel coefficient information comprises a downlink channel coefficient matrix;

and determining the overall interference noise information of the terminal equipment on the time-frequency resource positions of all ports according to the channel noise, the information of each interference channel and the noise of each interference channel.

2. The method for measuring interference of a terminal according to claim 1, wherein the step of determining the overall interference noise information of the terminal device at all port time-frequency resource positions according to the channel noise, the information of each interference channel, and the noise of each interference channel comprises:

3. The method for measuring interference of a terminal as claimed in claim 1, wherein after the step of determining the overall interference noise information of the terminal device at all port time-frequency resource locations according to the channel noise, each of the interference channel information and each of the interference channel noise, the method for measuring interference of a terminal further comprises:

4. A terminal interference measurement method is applied to network side equipment, and is characterized in that the terminal interference measurement method comprises the following steps:

sending interference measurement indication information, wherein the interference measurement indication information is used for indicating port time-frequency resource positions of demodulation reference signals of all terminal equipment participating in the multi-user multi-input multi-output system to corresponding terminal equipment, and the terminal equipment determines the port time-frequency resource positions of the demodulation reference signals of all terminal equipment participating in the multi-user multi-input multi-output system according to the interference measurement indication information; receiving demodulation reference signals transmitted on each port time frequency resource position, wherein each demodulation reference signal comprises a first pre-coded signal received by the terminal equipment and a second pre-coded signal received by at least one other terminal equipment participating in the multi-user multi-input multi-output system, and downlink channel coefficient information comprises a downlink channel coefficient matrix; estimating channel noise in a channel corresponding to the terminal equipment according to the downlink channel coefficient matrix and the first pre-coded signal; estimating interference channel information and interference channel noise of the channel information of each other terminal device in a channel corresponding to the terminal device according to the downlink channel coefficient matrix and the second pre-coded signal; and determining the overall interference noise information of the terminal equipment on the time-frequency resource positions of all ports according to the channel noise, the information of each interference channel and the noise of each interference channel.

5. The terminal interference measurement method of claim 4, wherein after transmitting interference measurement indication information, the terminal interference measurement method further comprises:

6. A terminal interference measurement system, characterized in that the terminal interference measurement system comprises:

the terminal equipment is used for receiving interference measurement indication information and determining port time-frequency resource positions of demodulation reference signals of all the terminal equipment participating in the multi-user multi-input multi-output system according to the interference measurement indication information; receiving demodulation reference signals transmitted on the time-frequency resource positions of the ports, wherein each demodulation reference signal comprises a first pre-coded signal received by the terminal equipment and a second pre-coded signal received by at least one other terminal equipment participating in the multi-user multi-input multi-output system, and the downlink channel coefficient information comprises a downlink channel coefficient matrix; estimating channel noise in a channel corresponding to the terminal equipment according to the downlink channel coefficient matrix and the first pre-coded signal; estimating interference channel information and interference channel noise of the channel information of the other terminal equipment in a channel corresponding to the terminal equipment according to the downlink channel coefficient matrix and the second pre-coded signal; and determining the whole interference noise information of the terminal equipment on all port time-frequency resource positions according to the channel noise, the interference channel information and the interference channel noise.

7. An electronic device, characterized in that the electronic device comprises:

at least one processor; and the number of the first and second groups,

a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the terminal interference measurement method of any one of claims 1 to 3 or to perform the terminal interference measurement method of any one of claims 4 to 5.

8. A computer-readable storage medium, wherein a program for implementing a terminal interference measurement method is stored on the computer-readable storage medium, and the program for implementing the terminal interference measurement method is executed by a processor to implement the terminal interference measurement method according to any one of claims 1 to 3 or to execute the terminal interference measurement method according to any one of claims 4 to 5.