WO2016134537A1

WO2016134537A1 - Channel quality measurement method, apparatus and system

Info

Publication number: WO2016134537A1
Application number: PCT/CN2015/073403
Authority: WO
Inventors: 刘建琴; 周永行
Original assignee: 华为技术有限公司
Priority date: 2015-02-28
Filing date: 2015-02-28
Publication date: 2016-09-01
Also published as: CN107210795A

Abstract

Disclosed are a channel quality measurement method, apparatus and system. The method comprises: a first user equipment receives a first-type reference signal and at least one second-type reference signal sent by a first base station, the first-type reference signal being configured with reference signal resources of M antenna ports, and the second-type reference signal being configured with reference signal resources of N antenna ports; the first user equipment measures channel quality based on the first-type reference signal to obtain a first measurement result; the first user equipment measures channel quality based on the at least one second-type reference signal to obtain a second measurement result; and the first user equipment sends the first measurement result and the second measurement result to the first base station. By means of the present invention, a downtilt angle of a vertical beam of a cell configured with an AAS can be adjusted according to channel quality measurement results corresponding to reference signals having different configurations.

Description

Channel quality measuring method, device and system

Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a channel quality measurement method, apparatus, and system.

Background technique

At present, in order to improve the system capacity of the wireless communication system and ensure the coverage of the cell, a multi-antenna multiple-input multiple-output (MIMO) technology has been widely used. For example, the Long Term Evolution (LTE) system uses multi-antenna MIMO-based transmit diversity, open-loop/closed-loop spatial division multiplexing, and demodulation-based reference signals (DMRS). Streaming. The DM RS-based multi-stream transmission is a two-dimensional beamforming. As shown in FIG. 1a, the transmitting antenna is horizontally placed, and only a horizontal beam can be generated, that is, a one-dimensional antenna configuration.

In order to improve the performance of multi-antenna systems, a two-dimensional antenna configuration in which antennas are placed in both horizontal and vertical directions has emerged. The two-dimensional antenna configuration is being studied in the LTE Rel-12 standard to achieve simultaneous horizontal and vertical directions. The upper beam shaping, that is, the three-dimensional beamforming, as shown in FIG. 1b, the antenna configuration increases the degree of freedom in the vertical direction, which can improve resource utilization. The configuration of the two-dimensional antenna is implemented by an Active Antenna System (AAS), which can provide beams with different downtilt angles in the vertical direction, and the base station can adjust the downtilt angle of the beam. For the coverage of the user equipment (User Equipment, UE for short), as shown in FIG. 1b, UE1 and UE3 in the cell may be covered and served by a downtilt beam, and UE2 and UE4 may pass another different downtilt angle. Beams are covered and serviced. Thereby, the adjustment of the cell coverage is performed. The above “LTE Rel-12” means “LTE of Release 12”.

However, in a new cell configured with AAS, a UE that has both a two-dimensional antenna array capability and a legacy UE that can only recognize a one-dimensional antenna array, or a heterogeneous network scenario where a macro station and a micro station coexist, may be used as a macro. The configuration of the station is different from that of the micro station. For example, when the macro station is configured with an AAS antenna array and the micro station is not equipped with an AAS antenna array, how can the base station configured with the AAS antenna array achieve three-dimensional beamforming by adjusting the downtilt angle of the vertical beam? The adjustment of cell coverage has become the key.

Summary of the invention

The embodiment of the invention provides a channel quality measurement method, device and system, which can adjust the downtilt angle of the vertical beam of the cell in which the AAS is configured according to the channel quality measurement result corresponding to the reference signal of different configurations.

A first aspect of the embodiments of the present invention provides a channel quality measurement apparatus, including:

a receiving module, configured to receive a first type of reference signal and a second type of reference signal sent by the first base station, where the first base station is a base station configured with a two-dimensional antenna array, and the first type of reference signal is configured a reference signal resource having M antenna ports, the second type of reference signal is configured with reference signal resources of N antenna ports, the N and M being integers greater than 0, and M is greater than N;

a measuring module, configured to perform channel quality measurement based on the first type of reference signal, to obtain a first measurement result;

The measuring module is further configured to perform channel quality measurement based on the at least one second type reference signal to obtain a second measurement result;

And a sending module, configured to send, to the first base station, the first measurement result and the second measurement result measured by the measurement module.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the at least one second type reference signal is configured by the first base station by using a high-layer signaling for a long period or a non-period, and sent to The first user equipment.

In conjunction with the first aspect, in a second possible implementation of the first aspect,

The receiving module is further configured to receive a target reference signal sent by the first base station, where the target reference signal is determined by the first base station from the at least one second type reference signal according to the second measurement result. a reference signal that satisfies a preset screening rule;

The measuring module is further configured to perform channel quality measurement based on the target reference signal.

In conjunction with the first aspect, or the first possible implementation of the first aspect, or the second possible implementation of the first aspect, in a third possible implementation of the first aspect, the second The N antenna ports of the reference signal are combined and weighted by M antenna ports of the first type of reference signal.

With reference to the first aspect, or the first possible implementation of the first aspect, or the second possible implementation of the first aspect, or the third possible implementation of the first aspect, in the first aspect In a fourth possible implementation manner, each of the second type reference signals corresponds to a subset of the first measurement results, and the subset is based on the at least one second type reference signal pair M antennas The precoding matrix corresponding to the port indicates a codebook set obtained by PMI grouping.

In conjunction with the fourth possible implementation of the first aspect, in a fifth possible implementation manner of the first aspect, the first measurement result includes PMI information, where the PMI information is corresponding to the target reference signal Obtained by the subset of the first measurement results, the target reference signal is a reference signal that is determined from the at least one second type of reference signal and that meets a preset screening rule.

With reference to the first aspect, or the first possible implementation of the first aspect, or the second possible implementation of the first aspect, or the third possible implementation of the first aspect, or the first aspect In a fourth possible implementation manner of the first aspect, the at least one second type of reference signal is associated with a channel quality measurement process, The channel quality measurement process includes the second measurement result obtained by performing channel quality measurement based on the at least one second type reference signal, where the second measurement result includes channel quality information CQI, precoding matrix indication PMI, and rank At least one of the RIs is indicated.

A second aspect of the embodiments of the present invention provides a signal sending apparatus, where the apparatus is disposed in a first base station, and includes:

a signal sending module, configured to send, to the first user equipment, a first type of reference signal and at least one second type of reference signal, so that the first user equipment is configured according to the first type of reference signal and the at least one second type Performing channel quality measurement on the reference signal; wherein the first base station is a base station configured with a two-dimensional antenna array, the first type reference signal is configured with reference signal resources of M antenna ports, and the second type of reference signal configuration a reference signal resource having N antenna ports, wherein N and M are integers greater than 0, and M is greater than N;

An acquiring module, configured to respectively acquire a first measurement result obtained by performing channel quality measurement by the first user equipment based on the first type reference signal, and a second measurement result obtained by performing channel quality measurement based on the at least one second type reference signal Measurement results.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the at least one second type reference signal is configured by the first base station by using a high-layer signaling for a long period or a non-period, and sent to The first user equipment.

In conjunction with the second aspect, in a second possible implementation of the second aspect, the device further includes:

a signal determining module, configured to determine, according to the second measurement result, a target reference signal that meets a preset screening rule from the at least one second type of reference signal;

The signal sending module is further configured to send the target reference signal to the first user equipment, so that the first user equipment performs channel quality measurement according to the target reference signal.

With reference to the second aspect, or the first possible implementation manner of the second aspect, or the second possible implementation manner of the second aspect, in the third possible implementation manner of the second aspect, the second type The N antenna ports of the reference signal are combined and weighted by M antenna ports of the first type of reference signal.

With reference to the second aspect, or the first possible implementation of the second aspect, or the second possible implementation of the second aspect, or the third possible implementation of the second aspect, in the second aspect In each of the four possible implementation manners, each of the second type of reference signals corresponds to a subset of the first measurement results, and the subset is corresponding to the M antenna ports according to the at least one second type of reference signal. The precoding matrix indicates the set of codebooks obtained by grouping the PMI.

With reference to the fourth possible implementation of the second aspect, in a fifth possible implementation manner of the second aspect, the first measurement result includes PMI information, where the PMI information is corresponding to the target reference signal Obtained by a subset of the measurement results, the target reference signal is a reference signal determined from the at least one second type of reference signal that satisfies a preset screening rule.

With reference to the second aspect, or the first possible implementation of the second aspect, or the second possible implementation of the second aspect, or the third possible implementation of the second aspect, or the second aspect The fourth possible implementation manner of the second aspect, in a sixth possible implementation manner of the second aspect, the second measurement result includes a target PMI; the device further includes :

a matrix determining module, configured to obtain a total precoding of data transmissions of M antenna ports corresponding to the first user equipment according to a precoding matrix corresponding to the target PMI in the second measurement result and a predefined combined weighting matrix matrix.

In conjunction with the sixth possible implementation of the second aspect, in a seventh possible implementation of the second aspect, the matrix determining module is specifically configured to:

Calculating a Kronecker product of the precoding matrix corresponding to the target PMI in the second measurement result and a predefined combination weighting matrix, and using the calculated result as the first user equipment The total precoding matrix of the data transmission of the M antenna ports.

With reference to the second aspect, or the first possible implementation of the second aspect, or the second possible implementation of the second aspect, or the third possible implementation of the second aspect, or the second aspect The four possible implementations, or the fifth possible implementation of the second aspect, or the sixth possible implementation of the second aspect, or the seventh possible implementation of the second aspect, in the second aspect In an eighth possible implementation manner, the at least one second type reference signal is associated with a channel quality measurement process, where the channel quality measurement process includes performing channel quality measurement based on the at least one second type reference signal. The second measurement result includes at least one of channel quality information CQI, a precoding matrix indication PMI, and a rank indication RI.

A third aspect of the embodiments of the present invention provides another channel quality measuring apparatus, including:

a receiving module, configured to receive at least one reference signal sent by the first base station, where the reference signal is configured with a reference signal resource of the N antenna ports, where the antenna port of the data sent by the first base station is received by the first user equipment The number is M, the N is the maximum number of antenna ports supported by the second base station or the second user equipment, and the N and M are integers greater than 0, and M is greater than N;

a measuring module, configured to perform channel quality measurement based on the at least one reference signal, to obtain a first measurement result;

And a sending module, configured to send, to the first base station, the first measurement result measured by the measurement module.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the at least one reference signal is configured by the first base station by using a high-layer signaling for a long period or a non-period, and sent to the first For a user device.

In conjunction with the third aspect, in a second possible implementation of the third aspect,

The receiving module is further configured to receive a target reference signal that is sent by the first base station, where the target reference signal is determined by the first base station from the at least one reference signal according to the first measurement result. a reference signal for a preset screening rule;

With reference to the third aspect, or the first possible implementation manner of the third aspect, or the second possible implementation manner of the third aspect, in the third possible implementation manner of the third aspect, the at least one reference The signal is associated with a channel quality measurement process, and the channel quality measurement process includes The first measurement result obtained by performing channel quality measurement by the at least one reference signal, where the first measurement result includes at least one of channel quality information CQI, a precoding matrix indication PMI, and a rank indication RI.

A fourth aspect of the embodiments of the present invention provides another signal sending apparatus, where the apparatus is disposed in the first base station, and includes:

a signal sending module, configured to send, to the first user equipment, at least one reference signal, where the reference signal is configured with reference signal resources of the N antenna ports, so that the first user equipment performs channel quality based on the at least one reference signal The first measurement result is obtained, wherein the number of antenna ports of the data sent by the first base station to the first user equipment is M, and the N is the maximum number of antenna ports supported by the second base station or the second user equipment. N and M are integers greater than 0, and M is greater than N;

And an obtaining module, configured to acquire the first measurement result obtained by the first user equipment by performing channel quality measurement based on the at least one reference signal.

In conjunction with the fourth aspect, in a first possible implementation manner of the fourth aspect, the device further includes:

a signal determining module, configured to determine, according to the first measurement result, a target reference signal that meets a preset screening rule from the at least one reference signal;

With reference to the fourth aspect, in a second possible implementation manner of the fourth aspect, the at least one reference signal is configured by the first base station by using a high-layer signaling for a long period or a non-period, and sent to the first For a user device.

The fourth aspect is combined, or the first possible implementation of the fourth aspect. Or a second possible implementation manner of the fourth aspect, in a third possible implementation manner of the fourth aspect, the first measurement result includes a target PMI, and the device further includes:

a matrix determining module, configured to obtain a total precoding of data transmissions of M antenna ports corresponding to the first user equipment according to a precoding matrix corresponding to the target PMI in the first measurement result and a predefined combined weighting matrix matrix.

In conjunction with the third possible implementation of the fourth aspect, in a fourth possible implementation manner of the fourth aspect, the matrix determining module is specifically configured to:

Calculating a precoding matrix corresponding to the target PMI in the first measurement result and a predefined group Combining the Kronecker product of the weighting matrix, and using the result of the calculation as a total precoding matrix of data transmissions of the M antenna ports corresponding to the first user equipment.

The fourth aspect is combined, or the first possible implementation of the fourth aspect. Or the second possible implementation of the fourth aspect, or the third possible implementation of the fourth aspect, or the fourth possible implementation of the fourth aspect, the fifth possible implementation of the fourth aspect In the way,

The acquiring module is further configured to receive a second measurement result that is sent by the second base station, where the second measurement result is obtained by performing, by the second user equipment corresponding to the second base station, channel quality measurement based on the at least one reference signal. .

The fourth aspect is combined, or the first possible implementation of the fourth aspect. Or a second possible implementation of the fourth aspect, or a third possible implementation of the fourth aspect, or a fourth possible implementation of the fourth aspect, or a fifth possible implementation of the fourth aspect The sixth possible implementation manner of the fourth aspect, the at least one reference signal is associated with a channel quality measurement process, where the channel quality measurement process includes performing channel quality measurement based on the at least one reference signal The first measurement result includes at least one of channel quality information CQI, a precoding matrix indication PMI, and a rank indication RI.

A fifth aspect of the embodiments of the present invention provides a channel quality measurement method, including:

The first user equipment receives the first type of reference signal and the at least one second type of reference signal sent by the first base station, where the first base station is a base station configured with a two-dimensional antenna array, and the first type of reference signal is configured with a reference signal resource of the M antenna ports, the second type of reference signal is configured with reference signal resources of N antenna ports, the N and M are integers greater than 0, and M is greater than N;

The first user equipment performs channel quality measurement based on the first type of reference signal to obtain a first measurement result;

The first user equipment performs channel quality measurement based on the at least one second type reference signal to obtain a second measurement result;

The first user equipment sends the first measurement result and the second measurement result to the first base station.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the at least one second type reference signal is configured by the first base station by using a high-layer signaling for a long period or a non-period, and sent to The first user equipment.

With reference to the fifth aspect, in a second possible implementation manner of the fifth aspect, after the first user equipment sends the second measurement result to the first base station, the method further includes:

Receiving, by the first user equipment, a target reference signal that is sent by the first base station, where the target reference signal is determined by the first base station from the at least one second type of reference signal according to the second measurement result. a reference signal that satisfies a preset screening rule;

The first user equipment performs channel quality measurement based on the target reference signal.

With reference to the fifth aspect, or the first possible implementation manner of the fifth aspect, or the second possible implementation manner of the fifth aspect, in the third possible implementation manner of the fifth aspect, the second type The N antenna ports of the reference signal are combined and weighted by M antenna ports of the first type of reference signal.

With reference to the fifth aspect, or the first possible implementation manner of the fifth aspect, or the second possible implementation manner of the fifth aspect, or the third possible implementation manner of the fifth aspect, in the fifth aspect In each of the four possible implementation manners, each of the second type of reference signals corresponds to a subset of the first measurement results, and the subset is corresponding to the M antenna ports according to the at least one second type of reference signal. The precoding matrix indicates the set of codebooks obtained by grouping the PMI.

With reference to the fourth possible implementation manner of the fifth aspect, in a fifth possible implementation manner of the fifth aspect, the first measurement result includes PMI information, where the PMI information is corresponding to the target reference signal Obtained by the subset of the first measurement results, the target reference signal is a reference signal that is determined from the at least one second type of reference signal and that meets a preset screening rule.

With reference to the fifth aspect, or the first possible implementation manner of the fifth aspect, or the second possible implementation manner of the fifth aspect, or the third possible implementation manner of the fifth aspect, or the fifth aspect The fourth possible implementation manner of the fifth aspect, in a sixth possible implementation manner of the fifth aspect, the at least one second type reference signal is associated with a channel quality measurement process, The channel quality measurement process includes the second measurement result obtained by performing channel quality measurement based on the at least one second type reference signal, where the second measurement result includes channel quality information CQI, precoding matrix indication PMI, and rank At least one of the RIs is indicated.

A sixth aspect of the embodiments of the present invention provides a signal sending method, including:

Transmitting, by the first base station, the first type of reference signal and the at least one second type of reference signal to the first user equipment, so that the first user equipment is configured according to the first type of reference signal and the at least one second The class reference signal performs channel quality measurement; wherein the first base station is a base station configured with a two-dimensional antenna array, the first type reference signal is configured with reference signal resources of M antenna ports, and the second type reference signal Configuring a reference signal resource of N antenna ports, where N and M are integers greater than 0, and M is greater than N;

Obtaining, by the first base station, a first measurement result obtained by performing channel quality measurement by the first user equipment based on the first type reference signal, and a second measurement result obtained by performing channel quality measurement based on the at least one second type reference signal Measurement results.

With reference to the sixth aspect, in a first possible implementation manner of the sixth aspect, the at least one second type reference signal is configured by the first base station by using a high-layer signaling for a long period or a non-period, and sent to The first user equipment.

With reference to the sixth aspect, in a second possible implementation manner of the sixth aspect, the first base station acquires, by the first base station, a second channel quality measurement by the first user equipment based on the at least one second type reference signal After measuring the result, the method further includes:

Determining, by the first base station, a target reference signal that meets a preset screening rule from the at least one second type of reference signal according to the second measurement result;

The first base station sends the target reference signal to the first user equipment, so that the first user equipment performs channel quality measurement according to the target reference signal.

With reference to the sixth aspect, or the first possible implementation manner of the sixth aspect, or the second possible implementation manner of the sixth aspect, in a third possible implementation manner of the sixth aspect, the second type The N antenna ports of the reference signal are combined and weighted by M antenna ports of the first type of reference signal.

With reference to the sixth aspect, or the first possible implementation manner of the sixth aspect, or the second possible implementation manner of the sixth aspect, or the third possible implementation manner of the sixth aspect, In each of the four possible implementation manners, each of the second type of reference signals corresponds to a subset of the first measurement results, and the subset is corresponding to the M antenna ports according to the at least one second type of reference signal. The precoding matrix indicates the set of codebooks obtained by grouping the PMI.

With reference to the fourth possible implementation manner of the sixth aspect, in a fifth possible implementation manner of the sixth aspect, the first measurement result includes PMI information, where the PMI information is corresponding to the target reference signal Obtained from a subset of the measurement results, the target reference signal is from the at least one A reference signal determined in the second type of reference signal that satisfies a preset screening rule.

With reference to the sixth aspect, or the first possible implementation manner of the sixth aspect, or the second possible implementation manner of the sixth aspect, or the third possible implementation manner of the sixth aspect, or the sixth aspect The fourth possible implementation manner of the sixth aspect, the sixth possible implementation manner of the sixth aspect, the second measurement result includes a target PMI, and the method further includes :

Determining, by the first base station, a total precoding matrix of data transmissions of M antenna ports corresponding to the first user equipment, according to a precoding matrix corresponding to the target PMI and a predefined combination weighting matrix in the second measurement result. .

With reference to the sixth possible implementation manner of the sixth aspect, in a seventh possible implementation manner of the sixth aspect, the first base station, according to the precoding matrix corresponding to the target PMI in the second measurement result, and the pre Defining a combined weighting matrix to obtain a total precoding matrix of data transmissions of the M antenna ports, including:

The first base station calculates a Kronecker product of a precoding matrix corresponding to a target PMI in the second measurement result and a predefined combination weight matrix, and uses the result of the calculation as the first user equipment. The total precoding matrix of the data transmission of the corresponding M antenna ports.

With reference to the sixth aspect, or the first possible implementation manner of the sixth aspect, or the second possible implementation manner of the sixth aspect, or the third possible implementation manner of the sixth aspect, or the sixth aspect The four possible implementation manners, or the fifth possible implementation manner of the sixth aspect, or the sixth possible implementation manner of the sixth aspect, or the seventh possible implementation manner of the sixth aspect, in the sixth aspect In an eighth possible implementation manner, the at least one second type reference signal is associated with a channel quality measurement process, where the channel quality measurement process includes performing channel quality measurement based on the at least one second type reference signal. The second measurement result includes at least one of channel quality information CQI, a precoding matrix indication PMI, and a rank indication RI.

A seventh aspect of the embodiments of the present invention provides another channel quality measurement method, including:

The first user equipment receives the at least one reference signal sent by the first base station, where the reference signal is configured with a reference signal resource of the N antenna ports, where the number of antenna ports of the data sent by the first base station is received by the first user equipment In the case of M, the N is the maximum number of antenna ports supported by the second base station or the second user equipment, where N and M are integers greater than 0, and M is greater than N;

The first user equipment performs channel quality measurement based on the at least one reference signal to obtain a first measurement result;

The first user equipment sends the first measurement result to the first base station.

With reference to the seventh aspect, in a first possible implementation manner of the seventh aspect, the at least one reference signal is configured by the first base station by using a high-layer signaling for a long period or a non-period, and sent to the first For a user device.

With reference to the seventh aspect, in a second possible implementation manner of the seventh aspect, after the first user equipment sends the first measurement result to the first base station, the method further includes:

Receiving, by the first user equipment, the target reference signal that is sent by the first base station, where the target reference signal is a preset that is determined by the first base station from the at least one reference signal according to the first measurement result. Filter the reference signal of the rule;

With reference to the seventh aspect, or the first possible implementation manner of the seventh aspect, or the second possible implementation manner of the seventh aspect, in the third possible implementation manner of the seventh aspect, the at least one reference The signal is associated with a channel quality measurement process, where the channel quality measurement process includes the first measurement result obtained by performing channel quality measurement based on the at least one reference signal, where the first measurement result includes channel quality information CQI, precoding The matrix indicates at least one of a PMI and a rank indication RI.

An eighth aspect of the embodiments of the present invention provides another signaling method, including:

The first base station sends at least one reference signal to the first user equipment, where the reference signal is configured with reference signal resources of the N antenna ports, so that the first user equipment performs channel quality measurement based on the at least one reference signal, a first measurement result, wherein the number of antenna ports of the data sent by the first base station to the first user equipment is M, and the N is the maximum number of antenna ports supported by the second base station or the second user equipment, where the N and M is an integer greater than 0, and M is greater than N;

Obtaining, by the first base station, the first measurement result obtained by performing channel quality measurement by the first user equipment based on the at least one reference signal.

With reference to the eighth aspect, in a first possible implementation manner of the eighth aspect, the first base station acquires the first measurement result that is performed by the first user equipment based on the at least one reference signal for channel quality measurement Thereafter, the method further includes:

Determining, by the first base station, a target reference signal that meets a preset screening rule from the at least one reference signal according to the first measurement result;

With reference to the eighth aspect, in a second possible implementation manner of the eighth aspect, the at least one reference signal is configured by the first base station by using a high-layer signaling for a long period or a non-period, and sent to the first For a user device.

With reference to the eighth aspect, or the first possible implementation manner of the eighth aspect, or the second possible implementation manner of the eighth aspect, in the third possible implementation manner of the eighth aspect, the first measurement The result includes a target PMI; after the first base station receives the first measurement result sent by the first user equipment, the method further includes:

Determining, by the first base station, a total precoding matrix of data transmissions of M antenna ports corresponding to the first user equipment, according to a precoding matrix corresponding to the target PMI in the first measurement result and a predefined combination weighting matrix .

With reference to the third possible implementation manner of the eighth aspect, in a fourth possible implementation manner of the eighth aspect, the first base station, according to the precoding matrix corresponding to the target PMI in the first measurement result, and the foregoing Defining the combined weighting matrix to obtain a total precoding matrix of data transmissions of the M antenna ports corresponding to the first user equipment, including:

The first base station calculates a Kronecker product of a precoding matrix corresponding to a target PMI in the first measurement result and a predefined combination weight matrix, and uses the result of the calculation as the first user equipment. The total precoding matrix of the data transmission of the corresponding M antenna ports.

With reference to the eighth aspect, or the first possible implementation manner of the eighth aspect, or the second possible implementation manner of the eighth aspect, or the third possible implementation manner of the eighth aspect, or the eighth aspect In a fourth possible implementation manner of the eighth aspect, the method further includes:

The first base station receives the second measurement result sent by the second base station, where the second measurement result is obtained by the second user equipment corresponding to the second base station performing channel quality measurement based on the at least one reference signal.

Combining the eighth aspect, or the first possible implementation of the eighth aspect, or the eighth aspect The second possible implementation manner, or the third possible implementation manner of the eighth aspect, or the fourth possible implementation manner of the eighth aspect, or the fifth possible implementation manner of the eighth aspect, in the eighth In a sixth possible implementation manner of the aspect, the at least one reference signal is associated with a channel quality measurement process, where the channel quality measurement process includes the first measurement obtained by performing channel quality measurement based on the at least one reference signal As a result, the first measurement result includes at least one of channel quality information CQI, precoding matrix indication PMI, and rank indication RI.

A ninth aspect of the embodiments of the present invention provides a user equipment, including the channel quality measuring apparatus of the above first aspect.

A tenth aspect of the embodiments of the present invention provides a base station, comprising the signal transmitting apparatus of the second aspect.

An eleventh embodiment of the present invention provides another user equipment, including the channel quality measuring apparatus of the above third aspect.

A twelfth aspect of the embodiments of the present invention provides another base station, including the signal transmitting apparatus of the above fourth aspect.

A thirteenth aspect of the present invention provides a communication system, including: a first user equipment and a first base station;

The first base station is configured to send, to the first user equipment, a first type of reference signal and at least one second type of reference signal, where the first base station is a base station configured with a two-dimensional antenna array, where the a type of reference signal is configured with reference signal resources of M antenna ports, the second type of reference signal is configured with reference signal resources of N antenna ports, the N and M are integers greater than 0, and M is greater than N;

The first user equipment is configured to receive the first type reference signal and the at least one second type reference signal sent by the first base station, and perform channel quality measurement based on the first type reference signal to obtain a first a measurement result; performing channel quality measurement based on the at least one second type reference signal to obtain a second measurement result; and transmitting the first measurement result and the second measurement result to the first base station;

The first base station is further configured to receive a first measurement result obtained by the first user equipment based on the first type reference signal, and perform channel quality measurement based on the at least one second type reference signal. The second measurement result.

A fourteenth aspect of the embodiments of the present invention provides another communication system, including: a first user equipment and a first base station;

The first base station is configured to send, to the first user equipment, at least one reference signal, where the reference signal is configured with reference signal resources of N antenna ports, where the first base station sends the information to the first user equipment The number of antenna ports of the data is M, the N is the maximum number of antenna ports supported by the second base station or the second user equipment, and the N and M are integers greater than 0, and M is greater than N;

The first user equipment is configured to receive at least one reference signal sent by the first base station, perform channel quality measurement based on the at least one reference signal, obtain a first measurement result, and send the first to the first base station a measurement result; wherein the reference signal is configured with a reference signal resource of N antenna ports, and the number of antenna ports of the data sent by the first base station received by the first user equipment is M;

The first base station is further configured to receive, by the first user equipment, the first measurement result obtained by performing channel quality measurement based on the at least one reference signal.

Compared with the prior art, the embodiment of the invention has the following beneficial effects:

In the embodiment of the present invention, the AAS-capable user equipment can perform channel quality measurement by using different configured reference signals sent by the base station, and return the measurement result to the base station, so that the base station can obtain measurement results according to different configured reference signals. The adjustment of the vertical precoding matrix of the AAS-equipped cell corresponding to the base station is implemented, and the three-dimensional beamforming is completed.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments will be briefly described below. Obviously, the drawings in the following description are only some of the present invention. For the embodiments, those skilled in the art can obtain other drawings according to the drawings without any creative work.

1a is a schematic diagram of a one-dimensional antenna configuration in the prior art;

1b is a schematic diagram of a two-dimensional antenna configuration in the prior art;

2 is a schematic structural diagram of a channel quality measuring apparatus according to an embodiment of the present invention;

3 is a schematic structural diagram of a signal sending apparatus according to an embodiment of the present invention;

4 is a schematic structural diagram of another channel quality measuring apparatus according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of another signal sending apparatus according to an embodiment of the present disclosure;

6 is a schematic flowchart of a channel quality measurement method according to an embodiment of the present invention;

FIG. 7 is a schematic flowchart diagram of a signal sending method according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of interaction of a channel quality measurement method according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of a two-dimensional antenna port configuration according to an embodiment of the present invention; FIG.

10 is a time slot diagram of a 16-port reference signal and a 4-port reference signal according to an embodiment of the present invention;

FIG. 11 is a time slot diagram of transmitting a 4-port reference signal according to an embodiment of the present invention; FIG.

FIG. 12 is a schematic flowchart diagram of another channel quality measurement method according to an embodiment of the present invention;

FIG. 13 is a schematic flowchart diagram of another signaling method according to an embodiment of the present invention;

FIG. 14 is a schematic diagram of interaction of another channel quality measurement method according to an embodiment of the present invention;

FIG. 15 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure;

FIG. 16 is a schematic structural diagram of a base station according to an embodiment of the present disclosure;

FIG. 17 is a schematic structural diagram of another user equipment according to an embodiment of the present disclosure;

FIG. 18 is a schematic structural diagram of another base station according to an embodiment of the present disclosure;

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

FIG. 20 is a schematic structural diagram of another communication system according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

It should be noted that the method of the embodiment of the present invention may be specifically applied to an application scenario in which a user equipment supporting AAS capability and a user equipment not supporting AAS capability exist in a cell configured with an AAS, that is, a two-dimensional antenna array, or In the heterogeneous network where the macro station and the micro station coexist, the application scenarios of the antenna configurations of the macro station and the micro station are different. The embodiment of the present invention can effectively adjust the downtilt angle of the vertical beam corresponding to the cell in which the AAS is configured according to the channel quality measurement result corresponding to the reference signal of different configurations.

FIG. 2 is a schematic structural diagram of a channel quality measuring apparatus according to an embodiment of the present invention. Specifically, the apparatus in the embodiment of the present invention includes: a receiving module 11, a measuring module 12, and a sending module 13. among them,

The receiving module 11 is configured to receive a first type of reference signal and a second type of reference signal sent by the first base station, where the first base station is a base station configured with a two-dimensional antenna array, and the first type The reference signal is configured with reference signal resources of M antenna ports, and the second type of reference signals are configured with reference signal resources of N antenna ports.

It should be noted that the apparatus in the embodiment of the present invention may be specifically configured in a user equipment (referred to as a first user equipment) capable of identifying a two-dimensional antenna array, wherein the first base station is configured with a horizontal direction. Base station of a two-dimensional antenna array of antenna ports and vertical antenna ports. Wherein, N and M are integers greater than 0, and M is greater than N.

In a specific embodiment, the first user equipment can implement three-dimensional beamforming based on channel measurements in two horizontal and vertical directions by a horizontal and vertical two-dimensional AAS antenna configuration. To achieve channel quality measurement in the horizontal and vertical dimensions, the base station needs to configure the same reference signal resource as the number of data transmitting antenna ports to the user. Specifically, the reference signal may be a user-specific reference signal, such as a Channel State Information-Reference Signal (CSI-RS), and a Dedicated Demodulation Reference Signal (DMRS). A Cell-specific Reference Signal (CRS) or any other reference signal used for channel quality measurement is not limited in the embodiment of the present invention.

In a specific embodiment, the first base station, such as the macro station configured with the AAS, can configure two reference signal resources for the first user equipment, that is, the AAS-capable user equipment, including the first type of reference signal resources configured with M antenna ports. The reference signal and the second type of reference signal of the at least one reference signal resource configured with N antenna ports, M>N>=1, the reference signal may be specifically a CSI-RS, and is notified to the first user equipment. The first user equipment receives, by the receiving module 11, the first type reference signal sent by the first base station and the plurality of second type reference signals.

Optionally, the at least one second type of reference signal may be configured by the first base station to be configured by the high-level signaling in a long period or a non-period and sent to the first user equipment. The N antenna ports of the second type of reference signal are combined and weighted by M antenna ports of the first type of reference signal, for example, the N antenna ports of the second type of reference signal may be based on predefined Combination plus The weight matrix is obtained by combining weighting the M antenna ports of the first type of reference signal. Specifically, the M may be specifically the total number of antenna ports of the two-dimensional antenna array corresponding to the first base station, and the N may be specifically the maximum number of antenna ports supported by the neighboring micro-station or the macro station corresponding to the first base station. The number of horizontal antenna ports of the two-dimensional antenna array.

The measuring module 12 is configured to perform channel quality measurement based on the first type of reference signal to obtain a first measurement result.

The measuring module 12 is further configured to perform channel quality measurement based on the at least one second type reference signal to obtain a second measurement result.

The sending module 13 is configured to send, to the first base station, the first measurement result and the second measurement result measured by the measurement module 12.

In a specific embodiment, the measurement module 12 may perform channel quality measurement based on the first type of reference signal, obtain a first measurement result, and perform channel quality measurement based on the second type of reference signal to obtain a second measurement result.

Further, in an alternative embodiment,

The receiving module 11 is further configured to receive a target reference signal that is sent by the first base station, where the target reference signal is that the first base station is configured from the at least one second type of reference signal according to the second measurement result. The determined reference signal that satisfies the preset screening rule;

The measurement module 12 is further configured to perform channel quality measurement based on the target reference signal.

The second measurement result includes at least one measurement result, where the at least one measurement result is obtained by performing channel quality measurement based on the at least one second type reference signal, so that the first base station is according to the at least one The measurement result determines a target reference signal that satisfies a preset screening rule from the at least one second type of reference signal, for example, the first base station may determine, as the reference signal corresponding to the optimal one of the at least one measurement result, a reference signal as a target reference signal; or the second measurement result may be the most selected by the first user equipment from the measurement result obtained by performing channel quality measurement based on the at least one second type reference signal to satisfy a preset screening rule. An excellent measurement result, so that the first base station determines a target reference signal corresponding to the second measurement result according to the second measurement result, that is, directly determines the reference signal corresponding to the second measurement result as a target reference signal. Specifically, the at least one second type of reference signal may be configured by the first base station to be configured in a long period or a non-period by high layer signaling, and sent to the first type reference signal in a time division multiplexing manner. Training, by the first user equipment, a second type of reference signal of the reference signal resources configured with N antenna ports, and training a target reference that meets a preset screening rule from the plurality of second type reference signals The signal is a second type of reference signal with the best resource configuration (ie, the reference signal corresponding to the optimal measurement result). The measurement module 12 may perform channel quality measurement based on the optimal one of the second type of reference signals selected by the training in the second type of reference signal configuration after the training period.

Optionally, each of the second type of reference signals corresponds to a subset of the first measurement results, where the subset is a precoding matrix corresponding to the M antenna ports according to the at least one second type of reference signal. A codebook set obtained by grouping a Precoding Matrix Indicator (PMI). Further, the first measurement result includes PMI information, and the PMI information is obtained according to a subset of the first measurement result corresponding to the target reference signal, where the target reference signal is from the at least one second A reference signal determined in the class reference signal that satisfies the preset screening rule.

Further optionally, the at least one second type reference signal is associated with a channel quality measurement process, where the channel quality measurement process includes the second measurement obtained by performing channel quality measurement based on the at least one second type reference signal As a result, the second measurement result includes at least one of Channel Quality Information (CQI), PMI, and Rank Indicator (RI).

In the embodiment of the present invention, the AAS-capable user equipment may receive the first type reference signal of the reference signal resource configured by the M antenna port and the reference signal resources configured by the N antenna ports. The second type of reference signal is used to perform the channel quality measurement, and the measurement result is returned to the base station, so that the base station adjusts the vertical precoding matrix of the cell configured with the AAS according to the measurement result obtained by the reference signal of different configurations, and completes the three-dimensional beam. Forming.

FIG. 3 is a schematic structural diagram of a signal sending apparatus according to an embodiment of the present invention. Specifically, the apparatus of the embodiment of the present invention includes: a signal sending module 21 and an obtaining module 22. among them,

The signal sending module 21 is configured to send, to the first user equipment, a first type of reference signal and at least one second type of reference signal, so that the first user equipment is configured according to the first type of reference signal and the at least one The second type of reference signal performs channel quality measurement; the first type of reference signal is configured with reference signal resources of M antenna ports, and the second type of reference signal is configured with reference signal resources of N antenna ports.

It should be noted that the apparatus in the embodiment of the present invention may be specifically disposed in a base station (referred to as a first base station) configured with a two-dimensional antenna array of a horizontal antenna port and a vertical antenna port, where the first user equipment It is a user equipment capable of recognizing a two-dimensional antenna array with AAS capability. Wherein, N and M are integers greater than 0, and M is greater than N.

In a specific embodiment, the first base station, such as the macro station configured with the AAS, can configure two reference signal resources for the first user equipment, that is, the AAS-capable user equipment, including the first type of reference signal resources configured with M antenna ports. a reference signal and a second type of reference signal configured with reference signal resources of N antenna ports, M>N>=1, the reference signal may be specifically a CSI-RS, and sent to the first user by the signal sending module 21. device.

Optionally, the at least one second type of reference signal is configured by the first base station to be configured by the high layer signaling in a long period or a non-period and sent to the first user equipment. The N antenna ports of the second type of reference signal are combined and weighted by M antenna ports of the first type of reference signal, for example, the N antenna ports of the second type of reference signal may be based on predefined The combined weighting matrix is obtained by combining weighting the M antenna ports of the first type of reference signal. Specifically, the N may be specifically the maximum number of antenna ports supported by the neighboring micro station or the number of horizontal antenna ports of the first base station, that is, the two-dimensional antenna array corresponding to the macro station.

The acquiring module 22 is configured to respectively obtain a first measurement result obtained by performing channel quality measurement by the first user equipment based on the first type reference signal, and performing channel quality measurement based on the at least one second type reference signal. The second measurement result.

Further, in an optional embodiment, the device may further include:

The signal determining module 13 is configured to determine, according to the second measurement result, a target reference signal that meets a preset screening rule from the at least one second type of reference signal;

The signal sending module 21 is further configured to send the target reference signal to the first user equipment, so that the first user equipment performs channel quality measurement according to the target reference signal.

Specifically, the signal sending module 21 may configure the reference signal resources of the plurality of N ports and the reference signal resources of the M port in a long-term or non-period manner in a time division multiplexing manner, and the signal determining module 13 refers to the plurality of N ports. The signal configuration is trained, and the reference signal that meets the preset screening rule, such as the reference signal of the optimal N port of the resource configuration, is trained according to the measured channel quality measurement result. Reference signal of the N port after the training period In the configuration, the signal sending module 21 can perform the sending of the reference signal resource of the N port based on the optimal N port reference signal configuration selected by the training, so that the first user equipment can be based on the optimal N port reference. The signal is measured for channel quality.

Optionally, each of the second type of reference signals corresponds to a subset of the first measurement results, and the subset is configured to group PMIs corresponding to the M antenna ports according to the at least one second type of reference signal. The resulting codebook collection.

Further optionally, the first measurement result includes PMI information, where the PMI information is obtained according to a subset of the first measurement result corresponding to the target reference signal, and the target reference signal is from the at least one A reference signal determined in the second type of reference signal that satisfies a preset screening rule.

Further, in an optional embodiment, the second measurement result includes a target PMI; the device may further include:

The matrix determining module 14 is configured to obtain a total pre-data transmission of the M antenna ports corresponding to the first user equipment according to the precoding matrix corresponding to the target PMI and the predefined combined weighting matrix in the second measurement result. Encoding matrix.

Optionally, the matrix determining module 14 is specifically configured to:

Calculating a Kronecker product of the precoding matrix corresponding to the target PMI and the predefined combination weighting matrix in the second measurement result, and using the result of the calculation as the M antennas corresponding to the first user equipment The total precoding matrix of the data transmission of the port.

Further optionally, the at least one second type reference signal is associated with a channel quality measurement process, where the channel quality measurement process includes the second measurement obtained by performing channel quality measurement based on the at least one second type reference signal As a result, the second measurement result includes at least one of channel quality information CQI, precoding matrix indication PMI, and rank indication RI.

Specifically, the first base station can complete the three-dimensional beamforming according to the first measurement result and/or the second measurement result returned by the first user equipment, and adjust the downtilt angle of the vertical beam corresponding to the first base station. .

In the embodiment of the present invention, the first base station may perform channel quality measurement by configuring a reference signal resource including an M port and reference signal resources of multiple N ports for the AAS-capable user equipment, so as to perform base station measurement according to the obtained measurement result. The downtilt angle of the beam is adjusted vertically to complete the three-dimensional beamforming.

Referring to FIG. 4, it is a schematic structural diagram of another channel quality measuring apparatus according to an embodiment of the present invention. The device of the embodiment of the present invention includes: a receiving module 31, a measuring module 32, and a sending module 33. among them,

The receiving module 31 is configured to receive, by the first base station, at least one reference signal, where the reference signal is configured with a reference signal resource of the N antenna ports, where the data sent by the first base station is sent by the first user equipment. The number of antenna ports is M, and the N is the maximum number of antenna ports supported by the second base station or the second user equipment.

It should be noted that the apparatus in the embodiment of the present invention may be specifically configured in a first user equipment that has an AAS capability, that is, a two-dimensional antenna array, where the first base station is configured with a horizontal antenna port and a vertical antenna. A base station of a two-dimensional antenna array of a port, wherein the second user equipment is a user equipment that can only identify a one-dimensional antenna array without AAS capability, and the N and M are integers greater than 0, and M is greater than N.

Optionally, the at least one reference signal is configured by the first base station by using a high-level signaling for a long period or a non-period and sent to the first user equipment.

The measuring module 32 is configured to perform channel quality measurement based on the at least one reference signal to obtain a first measurement result;

The sending module 33 is configured to send, to the first base station, the first measurement result measured by the measurement module.

Further, in an alternative embodiment,

The receiving module 31 is further configured to receive a target reference signal that is sent by the first base station, where the target reference signal is determined by the first base station from the at least one reference signal according to the first measurement result. a reference signal that satisfies a preset screening rule;

The measurement module 32 is further configured to perform channel quality measurement based on the target reference signal.

The first measurement result includes at least one measurement result, where the at least one measurement result is obtained by performing channel quality measurement based on the at least one reference signal, so that the first base station is configured according to the at least one measurement result. Determining, by the at least one reference signal, a target reference signal that meets a preset screening rule, for example, the first base station determines a reference signal corresponding to an optimal one of the at least one measurement result as a target reference signal; or The second measurement result may be a reference signal that is selected by the first user equipment from the measurement result obtained by performing channel quality measurement based on the at least one reference signal, and meets a preset screening rule, such as a measurement with an optimal measurement result. Knot The first base station determines, according to the second measurement result, the target reference signal corresponding to the second measurement result, that is, directly determines the reference signal corresponding to the second measurement result as the target reference signal. After the receiving module 31 receives the target reference signal sent by the first base station, the measuring module 32 can perform channel quality measurement based on the target reference signal.

Further optionally, the at least one reference signal is associated with a channel quality measurement process, where the channel quality measurement process includes the first measurement result obtained by performing channel quality measurement based on the at least one reference signal, where the first The measurement result includes at least one of channel quality information CQI, precoding matrix indication PMI, and rank indication RI.

In the embodiment of the present invention, the AAS-capable user equipment, that is, the first user equipment, may perform channel quality measurement by receiving reference signals of multiple reference signal resources configured with N antenna ports sent by the base station, and return the measurement result. The base station is configured to enable the base station to adjust the vertical precoding matrix of the cell configured with the AAS according to the obtained measurement result, thereby implementing adjustment of the coverage of the cell. At the same time, the number of antenna ports of the reference signal resource configured by the AAS-capable user equipment is smaller than the number of antenna ports when the actual data is transmitted, so that the pilot overhead of the AAS-capable user equipment is reduced.

FIG. 5 is a schematic structural diagram of another signal sending apparatus according to an embodiment of the present invention. Specifically, the apparatus in the embodiment of the present invention may be disposed in a first base station configured with a two-dimensional antenna array, including: The signal transmitting module 41 and the obtaining module 42. among them,

The signal sending module 41 is configured to send, to the first user equipment, at least one reference signal, where the reference signal is configured with reference signal resources of the N antenna ports, so that the first user equipment is based on the at least one reference signal The channel quality measurement is performed to obtain a first measurement result, where the number of antenna ports of the data sent by the first base station to the first user equipment is M, and the N is the maximum antenna port supported by the second base station or the second user equipment. For the number, the N and M are integers greater than 0, and M is greater than N.

The obtaining module 42 is configured to acquire the first measurement result obtained by the first user equipment based on the channel quality measurement by using the at least one reference signal.

Further, in an optional embodiment, the device may further include:

The signal determining module 43 is configured to determine, according to the first measurement result, a target reference signal that meets a preset screening rule from the at least one reference signal;

The signal sending module 41 is further configured to send the target reference signal to the first user equipment, so that the first user equipment performs channel quality measurement according to the target reference signal.

Specifically, the signal sending module 41 may configure the reference signal resources of the plurality of N ports in a long-term or non-period manner in a time division multiplexing manner, and the signal determining module 43 performs training on the reference signal configurations of the plurality of N ports, according to the measurement. The obtained channel quality measurement results from the reference signal configuration of the plurality of N ports to train a reference signal that meets a preset screening rule, such as a reference signal of an N port with an optimal resource configuration. In the reference signal configuration of the N port after the training period, the signal sending module 41 may perform the sending of the reference signal resource of the N port based on the optimal N port reference signal configuration selected by the training, so that the first The user equipment may perform channel quality measurement based on the reference signal of the optimal N port.

Further, in an optional embodiment, the first measurement result includes a target PMI; the device may further include:

The matrix determining module 44 is configured to obtain, according to the precoding matrix corresponding to the target PMI in the first measurement result, and the pre-defined combined weighting matrix, the total pre-data transmission of the M antenna ports corresponding to the first user equipment. Encoding matrix.

Optionally, the matrix determining module 44 is specifically configured to:

Calculating a Kronecker product of the precoding matrix corresponding to the target PMI in the first measurement result and a predefined combination weighting matrix, and using the result of the calculation as the M antennas corresponding to the first user equipment The total precoding matrix of the data transmission of the port.

Further, in the embodiment of the present invention,

The obtaining module 42 is further configured to receive a second measurement result sent by the second base station, where the second measurement result is that the second user equipment corresponding to the second base station performs channel quality measurement based on the at least one reference signal. of.

In the embodiment of the present invention, the first base station may perform channel quality measurement by configuring a reference signal of a plurality of N-port reference signal resources for the AAS-capable user equipment, and perform, according to the obtained measurement result, the cell configured with the AAS. The precoding matrix is adjusted vertically to adjust the coverage of the cell. At the same time, the number of antenna ports of the reference signal resource configured by the AAS-capable user equipment is smaller than the number of antenna ports when the actual data is transmitted, so that the pilot overhead of the AAS-capable user equipment is reduced.

FIG. 6 is a schematic flowchart of a channel quality measurement method according to an embodiment of the present invention. Specifically, the method in the embodiment of the present invention includes:

S101: The first user equipment receives the first type reference signal sent by the first base station and the at least one second type reference signal, where the first type reference signal is configured with reference signal resources of M antenna ports, and the second type reference The signal is configured with reference signal resources of N antenna ports.

It should be noted that the first base station is a base station configured with a two-dimensional antenna array of a horizontal antenna port and a vertical antenna port, and the first user equipment is a user equipment capable of identifying a two-dimensional antenna array with AAS capability. , N and M are integers greater than 0, and M is greater than N.

In a specific embodiment, the first user equipment can implement three-dimensional beamforming based on channel measurements in two horizontal and vertical directions by a horizontal and vertical two-dimensional AAS antenna configuration. To achieve channel quality measurement in the horizontal and vertical dimensions, the base station needs to configure the same reference signal resource as the number of data transmitting antenna ports to the user. Specifically, the reference signal may be a user-specific reference signal, such as a CSI-RS, a DMRS, a CRS, or any other reference signal for channel quality measurement, which is not limited by the embodiment of the present invention.

S102: The first user equipment performs channel quality measurement based on the first type reference signal to obtain a first measurement result.

S103: The first user equipment performs channel quality measurement based on the at least one second type reference signal to obtain a second measurement result.

S104: The first user equipment sends the first measurement result and the second measurement result to the first base station.

In a specific embodiment, the first base station, such as the macro station configured with the AAS, can configure two reference signal resources for the first user equipment, that is, the AAS-capable user equipment, including the first type of reference signal resources configured with M antenna ports. a reference signal and a second type of reference signal of at least one reference signal resource configured with N antenna ports, M>N>=1, the reference signal may be specifically a CSI-RS, and notified to First user device. The first user equipment receives the first type of reference signal and the plurality of second type of reference signals sent by the first base station. Optionally, the at least one second type of reference signal may be configured by the first base station to be configured by the high-level signaling in a long period or a non-period and sent to the first user equipment. The N antenna ports of the second type of reference signal are combined and weighted by M antenna ports of the first type of reference signal, for example, the N antenna ports of the second type of reference signal may be based on predefined The combined weighting matrix is obtained by combining weighting the M antenna ports of the first type of reference signal. Specifically, the M may be specifically the total number of antenna ports of the two-dimensional antenna array corresponding to the first base station, and the N may be specifically the maximum number of antenna ports supported by the neighboring micro-station or the first base station, that is, the macro station The number of horizontal antenna ports of the corresponding two-dimensional antenna array.

In a specific embodiment, after the first user equipment sends the second measurement result to the first base station, the first user equipment may further receive a target reference signal sent by the first base station, where the target The reference signal is a reference signal that is determined by the first base station from the at least one second type of reference signal and that meets a preset screening rule according to the second measurement result; the first user equipment is based on the target reference signal Perform channel quality measurements. The second measurement result includes at least one measurement result, where the at least one measurement result is obtained by performing channel quality measurement based on the at least one second type reference signal, so that the first base station is according to the at least one The measurement result determines, from the at least one second type of reference signal, a target reference signal that meets a preset screening rule, for example, the first base station determines a reference signal corresponding to an optimal one of the at least one measurement result as a target. a reference signal; or the second measurement result may be an optimal that the first user equipment selects from the measurement result obtained by performing channel quality measurement based on the at least one second type reference signal to satisfy a preset screening rule. a measurement result, so that the first base station determines the target reference signal corresponding to the second measurement result according to the second measurement result, that is, directly determines the reference signal corresponding to the second measurement result as the target reference signal . Specifically, the at least one second type of reference signal may be configured by the first base station by using high-layer signaling for long-term or non-period, and sent to the first by time-multiplexing with the first type of reference signal. The second type of reference signal of the reference signal resource configured with the N antenna ports is trained by the user equipment, and the target reference signal that meets the preset screening rule is trained from the plurality of second type reference signals. A second type of reference signal (ie, the reference signal corresponding to the optimal measurement result) with the best resource configuration. The first user equipment in the second type of reference signal configuration after the training period can be performed based on the optimal second type reference signal selected by the training. Channel quality measurement.

Further optionally, the at least one second type reference signal is associated with a channel quality measurement process, where the channel quality measurement process includes the second measurement obtained by performing channel quality measurement based on the at least one second type reference signal As a result, the second measurement result includes at least one of CQI, PMI, and RI.

In the embodiment of the present invention, the AAS-capable user equipment, that is, the first user equipment, may receive the first type reference signal of the reference signal resource configured by the M antenna port and the plurality of antenna ports configured by the base station. Refers to the second type of reference signal of the signal resource to perform channel quality measurement, and returns the measurement result to the base station, so that the base station realizes the vertical precoding matrix of the cell configured with the AAS according to the measurement result obtained by the reference signal of different configurations. Adjust to complete 3D beamforming.

FIG. 7 is a schematic flowchart of a signal sending method according to an embodiment of the present invention. Specifically, the method in the embodiment of the present invention includes:

S201: The first base station sends a first type reference signal and at least one second type reference signal to the first user equipment, where the first type reference signal is configured with reference signal resources of M antenna ports, and the second type reference signal The reference signal resources of the N antenna ports are configured to enable the first user equipment to perform channel quality measurement according to the first type of reference signal and the at least one second type of reference signal.

The first base station is a base station configured with a two-dimensional antenna array, and the N and M are integers greater than 0, and M is greater than N.

In a specific embodiment, the first base station, such as the macro station configured with the AAS, can configure two reference signal resources for the first user equipment, that is, the AAS-capable user equipment, including the first type of reference signal resources configured with M antenna ports. a reference signal and a second type of reference signal of at least one reference signal resource configured with N antenna ports, M>N>=1, the reference signal may be specifically a CSI-RS, and notified to First user device.

S202: The first base station separately obtains a first measurement result obtained by performing channel quality measurement by the first user equipment based on the first type reference signal, and performing channel quality measurement based on the at least one second type reference signal. Second measurement result.

In a specific embodiment, after the first base station receives the second measurement result obtained by the first user equipment based on the channel quality measurement by using the at least one second type reference signal, the first base station may be according to the first a second measurement result, determining, from the at least one second type of reference signal, a target reference signal that meets a preset screening rule; the first base station transmitting the target reference signal to the first user equipment, so that the The first user equipment performs channel quality measurement according to the target reference signal. Specifically, the first base station may configure the reference signal resources of the multiple N ports in a long-period or non-period manner in a time division multiplexing manner with the first type of reference signals, and train the reference signal configurations of the multiple N ports. According to the measured channel quality measurement result, the reference signal that meets the preset screening rule, such as the reference signal of the optimal N port of the resource configuration, is trained from the reference signal configuration of the plurality of N ports. In the reference signal configuration of the N port after the training period, the first base station may perform the sending of the reference signal resource of the N port based on the optimal N port reference signal configuration selected by the training, so that the first user equipment Channel quality measurements can be made based on the optimal N-port reference signal.

Optionally, the second measurement result includes a target PMI, and the first base station may further obtain the foregoing according to a precoding matrix corresponding to the target PMI in the second measurement result and a predefined combined weighting matrix. A total precoding matrix of data transmissions of M antenna ports corresponding to a user equipment. In a specific embodiment, the first base station obtains a total precoding matrix of data transmissions of the M antenna ports according to a precoding matrix corresponding to a target PMI in the second measurement result and a predefined combined weight matrix. Specifically, the first base station calculates a Kronecker product of a precoding matrix corresponding to the target PMI in the second measurement result and a predefined combined weighting matrix, and uses the calculated result as the A total precoding matrix of data transmissions of M antenna ports corresponding to the first user equipment. The M is the total number of antenna ports of the two-dimensional antenna array corresponding to the first base station.

Optionally, the at least one second type reference signal is associated with a channel quality measurement process, where the channel quality measurement process includes the second measurement result obtained by performing channel quality measurement based on the at least one second type reference signal. The second measurement result includes at least one of channel quality information CQI, precoding matrix indication PMI, and rank indication RI.

FIG. 8 is a schematic diagram of interaction of a channel quality measurement method according to an embodiment of the present invention. Specifically, the method in the embodiment of the present invention includes:

S301: The first base station sends a first type reference signal and at least one second type reference signal to the first user equipment, where the first type reference signal is configured with reference signal resources of M antenna ports, and the second type reference signal A reference signal resource configured with N antenna ports.

In a specific embodiment, the first user equipment is configured by a horizontal and vertical two-dimensional AAS antenna configuration. Three-dimensional beamforming can be achieved based on channel measurements in both horizontal and vertical dimensions. To achieve channel quality measurement in the horizontal and vertical dimensions, the base station needs to configure the same reference signal resource as the number of data transmitting antenna ports to the user. Specifically, the reference signal may be a user-specific reference signal, such as a CSI-RS, a DMRS, a CRS, or any other reference signal for channel quality measurement, which is not limited by the embodiment of the present invention.

In a specific embodiment, the first base station, such as the macro station configured with the AAS, can configure two reference signal resources for the first user equipment, that is, the AAS-capable user equipment, including the first type of reference signal resources configured with M antenna ports. The reference signal and the second type of reference signal of at least one (eg, three) reference signal resources configured with N antenna ports, M>N>=1. Specifically, the N antenna ports of the second type of reference signal are combined and weighted by the M antenna ports of the first type of reference signal, wherein the weighting of the M antenna ports of the first type of reference signal is weighted. The matrix can be predefined. That is, the first type of reference signal and the second type of reference signal may be pre-defined by the first base station, and sent to the first user equipment in a time division multiplexing manner, and the first base station may pass the high layer signaling. The switching from the first type of reference signal to the second type of reference signal is triggered in a long period or aperiodically. Specifically, the M may be the total number of antenna ports of the two-dimensional antenna array corresponding to the first base station, and N may be the maximum number of antenna ports supported by the micro-station or the two-dimensional antenna array corresponding to the first base station, that is, the macro station. The number of horizontal antenna ports.

As shown in FIG. 9 , it is a schematic diagram of a two-dimensional antenna port configuration according to an embodiment of the present invention. The two-dimensional antenna array includes four antenna ports in a horizontal direction and four antenna ports in a vertical direction, and the reference signal is, for example, CSI- The RS can be configured as the configuration of the 16 ports shown in FIG. 9, and the first user equipment can perform channel quality measurement based on the reference signal of the CSI-RS resource with 16 antenna ports configured to obtain the three-dimensional pre-data during data transmission. The coding matrix performs three-dimensional beamforming. Take the antenna port configuration shown in FIG. 9 as an example, that is, M=16 (the total number of antenna ports) and N=4 (the number of horizontal antenna ports). The four antenna ports in the vertical direction are further weighted to form virtual pilot ports respectively pointing in three directions, which are respectively recorded as 4Port RS 1, 4Port RS 2 and 4Port RS 3. As shown in FIG. 10, it is a time slot diagram of a 16-port reference signal and a 4-port reference signal according to an embodiment of the present invention. That is, the first base station can trigger the switching from the first type reference signal corresponding to the 16 antenna ports to the second type reference signal corresponding to the 4 antenna ports by using the high layer signaling for a long period or a non-period. The second reference signal of the three reference signal resources configured with four antenna ports may also be configured by the first base station by using high-layer signaling for long-term or non-period, and sent to the station in a time division multiplexing manner. First use Household equipment.

S302: The first user equipment performs channel quality measurement based on the first type reference signal and the at least one second type reference signal to obtain a measurement result.

S303: The first user equipment sends the measurement result to the first base station.

In a specific embodiment, the first user equipment may perform channel quality measurement based on the first type of reference signal, obtain a first measurement result, and perform channel quality measurement based on the second type of reference signal to obtain a second measurement result. . Further, the first base station may further determine, according to the second measurement result, a target reference signal that meets a preset screening rule from the at least one second type of reference signal, so that the first user equipment can subsequently The target reference signal is used for channel quality measurement. Specifically, the antenna configuration in FIG. 9 is taken as an example, that is, N=4, assuming that the reference signal resources of the 16 antenna ports correspond to the antenna configuration shown in FIG. 9, the first user equipment has 4 based on the at least one configuration. The second type of reference signal of the reference signal resource of the antenna port performs channel quality measurement, for example, based on three second type reference signals, wherein the four antenna ports in the vertical direction are further subjected to different virtual weights to further form respectively pointing to The virtual pilot ports of the directional direction can be respectively recorded as 4Port RS 1, 4Port RS 2 and 4Port RS 3, as shown in FIG. 11 , which is a time slot diagram of a 4-port reference signal according to an embodiment of the present invention. The first base station may send, to the first user equipment, the second type of reference signals configured with the reference signal resources of the four antenna ports in a long-term or non-period manner in a time division multiplexing manner, and refer to the three second type reference signals. The signal is trained, and the channel quality measurement result corresponding to the three second type reference signals returned by the first user equipment is trained from the three second type reference signals to meet a preset screening rule. a reference signal, such as a reference signal that is optimal in resource configuration (ie, a reference signal corresponding to an optimal measurement result of channel quality measurement results corresponding to the three second-type reference signals); or, the first user equipment is based on the After the channel quality measurement is performed on the three second type of reference signals, the first one of the channel quality measurement results corresponding to the three second type reference signals is returned to the first base station (ie, the second measurement result), first The base station can use the reference signal corresponding to the optimal measurement result as the target reference signal. The first user equipment may perform channel quality measurement based on the selected target reference signal in the second type of reference signal configuration corresponding to the four antenna ports after the training period.

Further, the second measurement result includes a target PMI, where the target PMI may be specifically a PMI in a channel quality measurement result corresponding to the target reference signal. Specifically, when the first user equipment performs channel quality measurement according to the three 4-port reference signals, that is, the second type reference signal, the four antenna ports obtained by performing combined weighting processing on the vertical antenna ports may be corresponding to The target PMI is selected as the PMI, and the PMI1 is preferably the PMI corresponding to the target reference signal, that is, the optimal channel quality measurement result is applicable to the four ports. The channel quality measurement result of the reference signal corresponds to the PMI. The first base station can calculate the total precoding matrix of the 16-port data transmission according to the combined weighting matrix PMI2 corresponding to the reference signal resources of the predefined four antenna ports.

The

That is to represent the Kronecker product operation.

S304: The first base station completes three-dimensional beamforming according to the measurement result.

Further optionally, each of the second type of reference signals may correspond to a subset of the first measurement results, and the subset is configured to perform PMIs corresponding to the M antenna ports according to the at least one second type of reference signals. The set of codebooks obtained by grouping. Further, the first measurement result includes PMI information, and the PMI information is obtained according to a subset of the first measurement result corresponding to the target reference signal, where the target reference signal is from the at least one second type reference A reference signal determined in the signal that satisfies a preset screening rule, such as an optimal resource configuration. Specifically, in the reference signal measurement of the M antenna ports before the reference signal configuration of the next N antenna ports, the PMI in the channel quality measurement results of all the reference signals based on the M antenna ports may be selected according to the selection. The target reference signal, such as the N-port reference signal with the best resource configuration, performs the codebook subset limitation, or the PMI of the channel quality measurement results of all the reference signals based on the M antenna ports may be based on the multiple N-ports The reference signal is grouped, and the reference signal of each group of N ports corresponds to a set of codebooks, so that when the reference signal of the optimal N antenna ports is configured for a given resource, the first user equipment is based on the reference signal of the M port. The reporting of the PMI in the channel quality measurement result is limited only to the codebook subset corresponding to the reference signal of the optimal N port.

Further, for the second user equipment in the macro station, that is, the user equipment without AAS capability, M=16, N=4 is also taken as an example, and 16 antenna ports are assumed to be ports in the antenna configuration shown in FIG. The four antenna ports in the vertical direction are further weighted to form virtual antenna ports respectively pointing in three directions, which are respectively recorded as 4Port RS 1, 4Port RS 2 and 4Port RS 3. As shown in FIG. 11, the first base station may configure the second type of reference signals of the reference signal resources configured with four antenna ports in a long-term or non-period manner in a time division multiplexing manner. Training with reference signal configuration and training from the three second-class reference signals based on channel quality measurements A reference signal with optimal resource configuration. The first base station can perform the transmission of the reference signal resources of the four antenna ports based on the optimal reference signal selected by the training, in the second type of reference signals corresponding to the four antenna ports after the training period, so that the first A user equipment can perform channel quality measurements based on the optimal reference signal.

Specifically, the first base station includes, according to the measurement result returned by the first user equipment, the first measurement result and the second measurement result, where the measurement result obtained by combining the first measurement result and the second measurement result may be completed. The three-dimensional beamforming adjusts the downtilt angle of the vertical beam corresponding to the first base station.

Further optionally, a reference signal configuration of the at least one reference signal resource configured with N antenna ports may be associated with a channel quality measurement process, where the channel quality measurement process includes configuring based on the at least one reference signal Performing the first measurement result obtained by channel quality measurement. The first measurement result includes at least one of CQI, PMI, and RI. Specifically, the reference signals of the multiple N ports configured may correspond to only one channel quality measurement process, that is, the user equipment may obtain an optimal channel quality measurement result based on the channel quality measurement of the reference signals of the multiple N ports. That is, a channel quality measurement process associates a configuration of multiple reference signal resources, that is, a process associates a set of reference signal configurations as follows:

Where T is the number of groups configured by the reference signal associated with one CSI process, T>=1.

In the embodiment of the present invention, the AAS-capable user equipment may receive the first type reference signal of the reference signal resource configured by the M antenna port and the reference signal resources configured by the N antenna ports. The second type of reference signal is used for channel quality measurement, so that the measurement result obtained by the reference signal of different configurations is used to adjust the vertical precoding matrix of the cell in which the AAS is configured, and the three-dimensional beamforming is completed.

FIG. 12 is a schematic flowchart of another channel quality measurement method according to an embodiment of the present invention. Specifically, the method in the embodiment of the present invention includes:

S401: The first user equipment receives at least one reference signal sent by the first base station, where the reference signal is configured with reference signal resources of N antenna ports, where the antenna of the data sent by the first base station is received by the first user equipment The number of ports is M, and the N is the maximum number of antenna ports supported by the second base station or the second user equipment.

It should be noted that the first base station is a base station configured with a two-dimensional antenna array of a horizontal antenna port and a vertical antenna port, and the first user equipment is capable of identifying a two-dimensional antenna array by having an AAS capability in the macro station. The user equipment, the number of antenna ports of the data sent by the first base station to the first user equipment is M. The second user equipment is a user equipment that can only identify a one-dimensional antenna array without AAS capability, and the N and M are integers greater than 0, and M is greater than N.

Optionally, the at least one reference signal may be configured by the first base station by using high-layer signaling for a long period or a non-period and sent to the first user equipment.

S402: The first user equipment performs channel quality measurement based on the at least one reference signal to obtain a first measurement result.

S403: The first user equipment sends the first measurement result to the first base station.

In a specific embodiment, after the first user equipment sends the first measurement result to the first base station, the first user equipment may further receive a target reference signal sent by the first base station, where the target reference signal is a reference signal that is determined by the first base station from the at least one reference signal and that meets a preset screening rule according to the first measurement result; the first user equipment performs channel quality measurement based on the target reference signal. The first measurement result includes at least one measurement result, where the at least one measurement result is obtained by performing channel quality measurement based on the at least one reference signal, so that the first base station is configured according to the at least one measurement result. Determining, by the at least one reference signal, a target reference signal that meets a preset screening rule, for example, the first base station determines a reference signal corresponding to an optimal one of the at least one measurement result as a target reference signal; or The second measurement result may be a reference signal that is selected by the first user equipment from the measurement result obtained by performing channel quality measurement based on the at least one reference signal, and meets a preset screening rule, such as a measurement with an optimal measurement result. As a result, the first base station determines the target reference signal corresponding to the second measurement result according to the second measurement result, that is, directly determines the reference signal corresponding to the second measurement result as the target reference signal.

Further, the at least one reference signal is associated with a channel quality measurement process, the channel The quality measurement process includes the first measurement result obtained by performing channel quality measurement based on the at least one reference signal, the first measurement result including at least one of channel quality information CQI, precoding matrix indication PMI, and rank indication RI .

FIG. 13 is a schematic flowchart of another signal sending method according to an embodiment of the present invention. Specifically, the method in the embodiment of the present invention includes:

S501: The first base station sends the at least one reference signal to the first user equipment, so that the first user equipment performs channel quality measurement based on the at least one reference signal, to obtain a first measurement result, where the reference signal is configured with N The reference signal resource of the antenna port, the number of antenna ports of the data sent by the first base station to the first user equipment is M, and the N is the maximum number of antenna ports supported by the second base station or the second user equipment.

Wherein, N and M are integers greater than 0, and M is greater than N;

Specifically, the at least one reference signal is configured by the first base station by using high-layer signaling for a long period or a non-period and sent to the first user equipment.

S502: The first base station acquires the first measurement result obtained by performing channel quality measurement by the first user equipment based on the at least one reference signal.

In a specific embodiment, after the first base station acquires the first measurement result obtained by performing channel quality measurement by the first user equipment based on the at least one reference signal, the first base station may also be according to the first a measurement result, determining, from the at least one reference signal, a target reference signal that meets a preset screening rule; the first base station transmitting the target reference signal to the first user equipment, to enable the first user equipment Channel quality measurement is performed based on the target reference signal.

Optionally, the first measurement result includes a target PMI; after the first base station receives the first measurement result sent by the first user equipment, the first base station may further be according to the first Measurement The precoding matrix corresponding to the target PMI and the predefined combined weighting matrix in the quantity result are obtained, and the total precoding matrix of the data transmission of the M antenna ports corresponding to the first user equipment is obtained.

In a specific embodiment, the first base station obtains data transmissions of M antenna ports corresponding to the first user equipment according to the precoding matrix corresponding to the target PMI and the predefined combined weight matrix in the first measurement result. The total precoding matrix may be specifically: the first base station calculates a Kronecker product of a precoding matrix corresponding to a target PMI in the first measurement result and a predefined combined weighting matrix, and the The result of the calculation is used as a total precoding matrix of data transmissions of the M antenna ports corresponding to the first user equipment.

Further, the first base station may further receive a second measurement result sent by the second base station, where the second measurement result is that the second user equipment corresponding to the second base station performs channel quality measurement based on the at least one reference signal. owned. Specifically, the second measurement result may include a reference signal that is determined by the second base station from the at least one reference signal that meets a preset screening rule, such as a reference signal that is optimal in resource configuration.

Specifically, the first base station may adjust a downtilt angle of the vertical beam corresponding to the first base station according to the first measurement result and/or the second measurement result returned by the first user equipment, to implement cell coverage. Adjustment.

Further optionally, the at least one reference signal may be associated with a channel quality measurement process, where the channel quality measurement process includes the first measurement result obtained by performing channel quality measurement based on the at least one reference signal, where The first measurement result includes at least one of channel quality information CQI, precoding matrix indication PMI, and rank indication RI.

Further, please refer to FIG. 14 , which is a schematic diagram of interaction of another channel quality measurement method according to an embodiment of the present invention. Specifically, the method in the embodiment of the present invention includes:

S601: The first base station sends at least one reference signal to the first user equipment, where the reference The signal is configured with a reference signal resource of the N antenna ports, and the number of antenna ports of the data sent by the first base station to the first user equipment is M.

In a specific embodiment, the first base station, such as a macro station configured with an AAS, may predefine a plurality of reference signals of reference signal resources configured with N antenna ports, and the reference signal may be specifically a CSI-RS. The N may be the maximum number of antenna ports that the neighboring micro station (ie, the second base station) or the second user equipment can support or the number of horizontal antenna ports of the two-dimensional antenna array corresponding to the macro station, where the The second user equipment is a user equipment that can only identify the one-dimensional antenna array without AAS capability, and the N and M are integers greater than 0, and M is greater than N. Taking M=16 and N=4 as an example, assuming that the reference signal resources of the 16 antenna ports correspond to the antenna configuration shown in FIG. 9 above, the first base station may predefine at least one reference signal resource configured with 4 antenna ports. Reference signal and notify the first user equipment. The first user equipment receives the at least one reference signal sent by the first base station. The at least one reference signal may be configured by the first base station to be configured by the high-level signaling in a long-term or non-period manner, and sent to the first user equipment in a time division multiplexing manner.

S602: The first user equipment performs channel quality measurement based on the at least one reference signal to obtain a first measurement result, where the number of antenna ports of the data sent by the first base station received by the first user equipment is M.

S603: The first user equipment sends the first measurement result to the first base station.

Further, the first base station may further determine, according to the first measurement result, a target reference signal that meets a preset screening rule from the at least one reference signal, such as determining a reference signal with an optimal resource configuration, The first user equipment is subsequently enabled to perform channel quality measurement according to the target reference signal. Specifically, the antenna configuration in FIG. 9 is taken as an example, that is, N=4 (the number of horizontal antenna ports), and the reference signal resources of the 16 antenna ports are assumed to correspond to the antenna configuration shown in FIG. 9, the first user equipment. Performing channel quality measurement based on the reference signal of the at least one reference signal resource configured with 4 antenna ports, for example, when performing channel quality measurement based on three 4-port reference signals, wherein vertical direction The four antenna ports are further weighted to form virtual pilot ports respectively pointing in three directions, which can be respectively recorded as 4Port RS 1, 4Port RS 2 and 4Port RS 3, as shown in FIG. 11 , the first base station The three 4-port reference signals may be sent to the first user equipment in a time-division multiplex manner in a long-term or non-period manner, and the three 4-port reference signals are trained according to the three returned by the first user equipment. The channel quality measurement result corresponding to the reference signal is used to train the reference signal corresponding to the optimal 4-port resource configuration from the three 4-port reference signal configurations, that is, the channel quality measurement result corresponding to the three 4-port reference signals is optimal. The measurement result corresponding to the reference signal; or the first user equipment returns the channel quality measurement result corresponding to the three reference signals to the first base station after performing channel quality measurement based on the three 4-port reference signals a measurement result (ie, the first measurement result), the first base station can use the reference signal corresponding to the optimal measurement result as the optimal target reference signal for resource configuration . In the 4-port reference signal configuration after the training period, the first user equipment can perform channel quality measurement based on the optimal 4-port reference signal selected by the training.

S604: The first base station receives the second measurement result sent by the second base station.

In a specific embodiment, the first base station may further receive a second measurement result sent by the second base station, where the second measurement result is that the second user equipment corresponding to the second base station performs channel quality measurement based on the at least one reference signal. owned. Specifically, the second user equipment, that is, the second user equipment under the micro station, may select a reference signal of the N port with the optimal resource configuration based on the channel quality measurement result of the reference signals of the plurality of N ports predefined by the first base station. The second user equipment may report the selected number of the reference signal of the optimal N port or report the channel quality measurement result corresponding to the reference signal of all the N ports to the second base station, so that the second base station may be all according to the cell. The reported result of the second user equipment is combined to obtain a reference signal of the N port with the best resource configuration, and is sent to the first base station through the X2 port.

S605: The first base station completes three-dimensional beamforming according to the first measurement result returned by the first user equipment and the two measurement results returned by the second base station.

The first base station may perform the reference signal resource configuration of the N antenna ports optimally configured by the resources transmitted by the second base station through the X2 port and/or the optimal N port reference signal resource configuration selected by the user equipment of the local cell. The reference signal resource is transmitted by the N antenna ports on the subsequent time unit during the configuration of the port reference signal resource. The macro station can complete the three-dimensional beamforming according to the first measurement result returned by the first user equipment and/or the second measurement result returned by the micro station (ie, the second base station). The downtilt angle of the vertical beam corresponding to the first base station is adjusted.

Further, the target PMI is included in the first measurement result. Specifically, when the first user equipment performs channel quality measurement according to the three 4-port reference signals, the channel quality corresponding to the reference signals of the four antenna ports obtained by combining and weighting the vertical antenna ports may be used. The target PMI is selected as the PMI corresponding to the target reference signal, that is, the channel quality measurement of the reference signal suitable for the four ports in the channel quality measurement result is selected. The result corresponds to the PMI. The first base station can calculate the total precoding matrix of the 16-port data transmission according to the combined weighting matrix PMI2 corresponding to the predefined 4-port reference signal.

The

That is to represent the Kronecker product operation.

Further optionally, a reference signal configuration of the at least one reference signal resource configured with N antenna ports may be associated with a channel quality measurement process, where the channel quality measurement process includes configuring based on the at least one reference signal Performing the first measurement result obtained by channel quality measurement. The first measurement result includes at least one of CQI, PMI, and RI.

In the embodiment of the present invention, the AAS-capable user equipment may perform channel quality measurement by receiving reference signals of a plurality of reference signal resources configured with N antenna ports configured by the base station, and return the measurement result to the base station to The obtained measurement result adjusts the vertical precoding matrix of the cell in which the AAS is configured, thereby realizing the adjustment of the coverage of the cell. At the same time, the number of antenna ports of the reference signal resource configured by the AAS-capable user equipment is smaller than the number of antenna ports when the actual data is transmitted, so that the pilot overhead of the AAS-capable user equipment is reduced.

15 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. The user equipment of the embodiment of the present invention includes: a receiver 300, a transmitter 400, a memory 200, and a processor 100, where the memory 200 may be a high speed RAM memory or a non-volatile memory such as at least one disk memory. A corresponding application or the like is stored in the memory 200 as a computer storage medium. The receiver 300, the transmitter 400, the memory 200, and the processor 100 may be connected to each other through a bus, or may be connected by other means. In the present embodiment, a bus connection will be described. Specifically, the user equipment in the embodiment of the present invention may be specifically the first user equipment, and may refer to the related description of the first user equipment in the corresponding embodiment of FIG. 2 .

The processor 100 performs the following steps:

Receiving, by the receiver 300, the first type of reference signal and the at least one second type of reference signal sent by the first base station; wherein the first base station is a base station configured with a two-dimensional antenna array, and the first type of reference signal is configured with a reference signal resource of the M antenna ports, the second type of reference signal is configured with reference signal resources of N antenna ports, the N and M are integers greater than 0, and M is greater than N;

Performing channel quality measurement based on the first type of reference signal to obtain a first measurement result;

Performing channel quality measurement based on the at least one second type reference signal to obtain a second measurement result;

The first measurement result and the second measurement result are transmitted to the first base station by the transmitter 400.

Optionally, the at least one second type of reference signal is configured by the first base station to be configured by the high layer signaling in a long period or a non-period and sent to the first user equipment.

Optionally, after the processor 100 performs the sending the second measurement result to the first base station, the processor 100 is further configured to perform the following steps:

Receiving, by the receiver 300, the target reference signal sent by the first base station by using the receiver 300, where the target reference signal is determined by the first base station from the at least one second type reference signal according to the second measurement result. a reference signal that satisfies a preset screening rule;

Channel quality measurement is performed based on the target reference signal.

Optionally, the N antenna ports of the second type of reference signal are combined and weighted by M antenna ports of the first type of reference signal.

Optionally, each of the second type of reference signals corresponds to a subset of the first measurement results, where the subset is a precoding matrix corresponding to the M antenna ports according to the at least one second type of reference signal. A set of codebooks that are instructed by the PMI to be grouped.

16 is a schematic structural diagram of a base station according to an embodiment of the present invention. The base station of the embodiment of the present invention includes: a receiver 700, a transmitter 800, a memory 600, and a processor 500, where the memory 600 can be It is a high speed RAM memory or a non-volatile memory such as at least one disk memory. A corresponding application or the like is stored in the memory 600 as a computer storage medium. The receiver 700, the transmitter 800, the memory 600, and the processor 500 may be connected to each other through a bus, or may be connected by other means. In the present embodiment, a bus connection will be described. Specifically, the base station in the embodiment of the present invention may be specifically the first base station, and may refer to the related description of the first base station in the corresponding embodiment of FIG. 3.

The processor 500 performs the following steps:

Transmitting, by the transmitter 800, a first type of reference signal and at least one second type of reference signal to the first user equipment, so that the first user equipment is configured according to the first type of reference signal and the at least one second type of reference signal Performing channel quality measurement; wherein the first base station is a base station configured with a two-dimensional antenna array, the first type of reference signal is configured with reference signal resources of M antenna ports, and the second type of reference signal is configured with N Reference signal resources of the antenna ports, the N and M are integers greater than 0, and M is greater than N;

Obtaining, by the first user equipment, a first measurement result obtained by performing channel quality measurement based on the first type reference signal and a second measurement result obtained by performing channel quality measurement based on the at least one second type reference signal.

Optionally, after the performing, by the processor 500, the obtaining, by the first user equipment, the second measurement result obtained by performing channel quality measurement by using the at least one second type reference signal, the processor is further configured to perform the following steps:

Determining, from the at least one second type of reference signal, a target reference signal that satisfies a preset screening rule according to the second measurement result;

The target reference signal is transmitted by the transmitter 800 to the first user equipment, so that the first user equipment performs channel quality measurement according to the target reference signal.

Further optionally, the first measurement result includes PMI information, where the PMI information is obtained according to a subset of the first measurement result corresponding to the target reference signal, the target reference signal is from the at least one second A reference signal determined in the class reference signal that satisfies the preset screening rule.

Optionally, the second measurement result includes a target PMI; the processor 500 is further configured to perform the following steps:

Obtaining, according to the precoding matrix corresponding to the target PMI in the second measurement result, and the predefined combined weighting matrix, obtaining a total precoding matrix of data transmissions of the M antenna ports corresponding to the first user equipment.

Further, the processor 500 is configured to perform, according to the precoding matrix corresponding to the target PMI in the second measurement result, and a predefined combined weighting matrix, to obtain a total data transmission of the M antenna ports. Precoding the matrix, perform the following steps:

Further, please refer to FIG. 17, which is a schematic structural diagram of a user equipment according to an embodiment of the present invention. The user equipment in the embodiment of the present invention includes: a receiver 1100, a transmitter 1200, a memory 1000, and a processor 900. 1000 may be a high speed RAM memory or a non-volatile memory such as at least one disk memory. A corresponding application or the like is stored in the memory 1000 as a computer storage medium. The receiver 1100, the transmitter 1200, the memory 1000, and the processor 900 may be connected to each other through a bus, or may be connected by other means. In the present embodiment, a bus connection will be described. Specifically, the user equipment in the embodiment of the present invention may be specifically the first user equipment, and may refer to the first embodiment in FIG. A description of the user device.

The processor 900 performs the following steps:

Receiving, by the receiver 1100, at least one reference signal sent by the first base station, where the reference signal is configured with reference signal resources of N antenna ports, wherein the number of antenna ports of the data sent by the first base station received by the first user equipment For M, the N is the maximum number of antenna ports supported by the second base station or the second user equipment, and the N and M are integers greater than 0, and M is greater than N.

Performing channel quality measurement based on the at least one reference signal to obtain a first measurement result;

The first measurement result measured by the measurement module is sent by the transmitter 1200 to the first base station.

Optionally, after the performing, by the processor 900, the sending the first measurement result to the first base station, the method is further configured to perform the following steps:

Receiving, by the receiver 1100, the target reference signal sent by the first base station, where the target reference signal is determined by the first base station from the at least one reference signal according to the first measurement result to meet a preset screening rule. Reference signal

Channel quality measurement is performed based on the target reference signal.

Optionally, the at least one reference signal is associated with a channel quality measurement process, where the channel quality measurement process includes the first measurement result obtained by performing channel quality measurement based on the at least one reference signal, where the first measurement The result includes at least one of channel quality information CQI, precoding matrix indication PMI, and rank indication RI.

Further, please refer to FIG. 18, which is a schematic structural diagram of a base station according to an embodiment of the present invention. The base station of the embodiment of the present invention includes: a receiver 1500, a transmitter 1600, a memory 1400, and a processor 1300. It is a high speed RAM memory or a non-volatile memory such as at least one disk memory. A corresponding application or the like is stored in the memory 1400 as a computer storage medium. The data connection between the receiver 1500, the transmitter 1600, the memory 1400, and the processor 1300 may be performed through a bus, or may be connected by other means. In the present embodiment, a bus connection will be described. Specifically, the base station in the embodiment of the present invention may be specifically the first base station, and may refer to the related description of the first base station in the corresponding embodiment of FIG. Said.

The processor 1300 performs the following steps:

Transmitting, by the transmitter 1600, at least one reference signal to the first user equipment, where the reference signal is configured with reference signal resources of the N antenna ports, so that the first user equipment performs channel quality measurement based on the at least one reference signal, Obtaining a first measurement result, where the number of antenna ports of the data sent by the first base station to the first user equipment is M, and the N is the maximum number of antenna ports supported by the second base station or the second user equipment, the N And M is an integer greater than 0, and M is greater than N;

And obtaining, by the first user equipment, the first measurement result obtained by performing channel quality measurement based on the at least one reference signal.

Optionally, the processor 1300 is further configured to perform the following steps after performing the acquiring the first measurement result obtained by the first user equipment based on the channel quality measurement by using the at least one reference signal:

Determining, from the at least one reference signal, a target reference signal that satisfies a preset screening rule according to the first measurement result;

The target reference signal is transmitted by the transmitter 1600 to the first user equipment, so that the first user equipment performs channel quality measurement according to the target reference signal.

Optionally, the first measurement result includes a target PMI. After the performing, by the processor 1300, the receiving the first measurement result sent by the first user equipment, the method is further configured to perform the following steps:

And obtaining, according to the precoding matrix corresponding to the target PMI in the first measurement result and the pre-defined combination weighting matrix, a total precoding matrix of data transmissions of the M antenna ports corresponding to the first user equipment.

Optionally, the processor 1300 performs, according to the precoding matrix corresponding to the target PMI in the first measurement result, and a predefined combination weighting matrix, to obtain M antenna ports corresponding to the first user equipment. The total precoding matrix of the data transmission, the following steps are performed:

Calculating a Kronecker product of the precoding matrix corresponding to the target PMI in the first measurement result and a predefined combination weighting matrix, and using the calculated result as the first user equipment The total precoding matrix of the data transmission of the M antenna ports.

Optionally, the processor 1300 is further configured to perform the following steps:

Receiving, by the receiver 1500, the second measurement result sent by the second base station, where the second measurement result is obtained by the second user equipment corresponding to the second base station, performing channel quality measurement based on the at least one reference signal.

Further, please refer to FIG. 19, which is a schematic structural diagram of a communication system according to an embodiment of the present invention. The system includes: a first user equipment 2 and a first base station 1;

The first base station 1 is configured to send a first type reference signal and at least one second type reference signal to the first user equipment 2, where the first base station 1 is a base station configured with a two-dimensional antenna array, The first type of reference signal is configured with reference signal resources of M antenna ports, and the second type of reference signal is configured with reference signal resources of N antenna ports, where N and M are integers greater than 0, and M is greater than N;

The first user equipment 2 is configured to receive the first type reference signal and the at least one second type reference signal sent by the first base station 1; perform channel quality measurement based on the first type reference signal, Obtaining a first measurement result; performing channel quality measurement based on the at least one second type reference signal to obtain a second measurement result; and transmitting the first measurement result and the second measurement result to the first base station 1;

The first base station 1 is further configured to receive, by the first user equipment 2, a first measurement result obtained by performing channel quality measurement based on the first type reference signal, and performing channel quality based on the at least one second type reference signal. The second measurement result is measured.

The first user equipment is a user equipment capable of identifying a two-dimensional antenna array with AAS capability.

Specifically, the first user equipment in the embodiment of the present invention may refer to the related description of the first user equipment in the corresponding embodiment in FIG. 2 to FIG. 3 and FIG. 6 to FIG. 3, FIG. 6 to FIG. 11 correspond to the description of the first base station in the embodiment, and details are not described herein again.

Further, please refer to FIG. 20, which is a schematic structural diagram of another communication system according to an embodiment of the present invention. The system includes: a first user equipment 2 and a first base station 1;

The first base station 1 is configured to send, to the first user equipment 2, at least one reference signal, where the reference signal is configured with reference signal resources of N antenna ports; wherein the first base station 1 is directed to the first user The number of antenna ports of the data sent by the device 2 is M, the N is the maximum number of antenna ports supported by the second base station or the second user equipment, and the N and M are integers greater than 0, and M is greater than N;

The first user equipment 2 is configured to receive at least one reference signal sent by the first base station 1 , perform channel quality measurement based on the at least one reference signal, obtain a first measurement result, and send the first measurement result to the first base station 1 The first measurement result; wherein the reference signal is configured with a reference signal resource of N antenna ports, and the number of antenna ports of the data sent by the first base station 1 received by the first user equipment 2 is M;

The first base station 1 is further configured to receive, by the first user equipment 2, the first measurement result obtained by performing channel quality measurement based on the at least one reference signal.

Further, the system may further include a second base station and a second user equipment; the first base station may further receive a second measurement result sent by the second base station, where the second measurement result is corresponding to the second base station The second user equipment obtains channel quality measurement based on the at least one reference signal.

Specifically, the first user equipment is a user equipment that can identify a two-dimensional antenna array with AAS capability, and the second user equipment is a user equipment that can only identify one-dimensional antenna array without AAS capability. If the first base station is a macro station configured with an AAS, the second base station may be a neighboring micro station that is not configured with an AAS. The embodiment of the present invention enables the first base station to implement the adjustment of the coverage of the cell by adjusting the vertical downtilt beam by using the obtained first measurement result and the second measurement result, thereby reducing interference to the neighboring cell.

Specifically, the first user equipment in the embodiment of the present invention may refer to the related description of the first user equipment in the corresponding embodiment in FIG. 4 to FIG. 5 and FIG. 12 to FIG. 5, FIG. 12 to FIG. 14 are related to the description of the first base station in the embodiment, and details are not described herein again.

In the several embodiments provided by the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some special The sign can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as the unit may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. . Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The above software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods of the various embodiments of the present invention. Part of the steps. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

A person skilled in the art can clearly understand that for the convenience and brevity of the description, only the division of each functional module described above is exemplified. In practical applications, the above function assignment can be completed by different functional modules as needed, that is, the device is installed. The internal structure is divided into different functional modules to perform all or part of the functions described above. For the specific working process of the device described above, refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

A channel quality measuring device, comprising:

a receiving module, configured to receive a first type of reference signal and a second type of reference signal sent by the first base station, where the first base station is a base station configured with a two-dimensional antenna array, and the first type of reference signal is configured a reference signal resource having M antenna ports, the second type of reference signal is configured with reference signal resources of N antenna ports, the N and M being integers greater than 0, and M is greater than N;

a measuring module, configured to perform channel quality measurement based on the first type of reference signal, to obtain a first measurement result;

The measuring module is further configured to perform channel quality measurement based on the at least one second type reference signal to obtain a second measurement result;

And a sending module, configured to send, to the first base station, the first measurement result and the second measurement result measured by the measurement module.
The apparatus according to claim 1, wherein the at least one second type of reference signal is configured by the first base station to be configured in a long period or a non-period by high layer signaling, and sent to the first user equipment. of.
The device of claim 1 wherein:

The receiving module is further configured to receive a target reference signal sent by the first base station, where the target reference signal is determined by the first base station from the at least one second type reference signal according to the second measurement result. a reference signal that satisfies a preset screening rule;

The measuring module is further configured to perform channel quality measurement based on the target reference signal.
The apparatus according to any one of claims 1-3, wherein the N antenna ports of the second type of reference signal are combined and weighted by M antenna ports of the first type of reference signal.
Apparatus according to any one of claims 1 to 4, wherein each of said second classes The reference signal corresponds to a subset of the first measurement result, and the subset is a codebook set obtained by grouping PMIs corresponding to precoding matrix indications corresponding to the M antenna ports according to the at least one second type reference signal.
The apparatus according to claim 5, wherein the first measurement result includes PMI information, and the PMI information is obtained according to a subset of the first measurement result corresponding to the target reference signal, the target The reference signal is a reference signal determined from the at least one second type of reference signal that satisfies a predetermined screening rule.
The apparatus according to any one of claims 1 to 6, wherein the at least one second type of reference signal is associated with a channel quality measurement process, and the channel quality measurement process is included based on the at least one second class The reference signal performs the second measurement result obtained by channel quality measurement, and the second measurement result includes at least one of channel quality information CQI, precoding matrix indication PMI, and rank indication RI.
A signal transmitting apparatus, wherein the apparatus is disposed in a first base station, and includes:

a signal sending module, configured to send, to the first user equipment, a first type of reference signal and at least one second type of reference signal, so that the first user equipment is configured according to the first type of reference signal and the at least one second type Performing channel quality measurement on the reference signal; wherein the first base station is a base station configured with a two-dimensional antenna array, the first type reference signal is configured with reference signal resources of M antenna ports, and the second type of reference signal configuration a reference signal resource having N antenna ports, wherein N and M are integers greater than 0, and M is greater than N;

An acquiring module, configured to respectively acquire a first measurement result obtained by performing channel quality measurement by the first user equipment based on the first type reference signal, and a second measurement result obtained by performing channel quality measurement based on the at least one second type reference signal Measurement results.
The apparatus according to claim 8, wherein the at least one second type of reference signal is configured by the first base station to be configured in a long period or a non-period by high layer signaling, and sent to the first user equipment. of.
The device according to claim 8, wherein the device further comprises:

a signal determining module, configured to determine, according to the second measurement result, a target reference signal that meets a preset screening rule from the at least one second type of reference signal;

The signal sending module is further configured to send the target reference signal to the first user equipment, so that the first user equipment performs channel quality measurement according to the target reference signal.
The apparatus according to any one of claims 8 to 10, wherein the N antenna ports of the second type of reference signals are combined and weighted by M antenna ports of the first type of reference signals.
Apparatus according to any one of claims 8-11, wherein each of said second type of reference signals corresponds to a subset of said first measurements, said subset being according to said at least one The second type of reference signal indicates a codebook set obtained by grouping PMIs by precoding matrices corresponding to M antenna ports.
The apparatus according to claim 12, wherein the first measurement result includes PMI information, and the PMI information is obtained according to a subset of the first measurement result corresponding to the target reference signal, the target reference signal And a reference signal that is determined from the at least one second type of reference signal and that meets a preset screening rule.
The device according to any one of claims 8 to 13, wherein the second measurement result includes a target PMI; the device further comprises:

a matrix determining module, configured to obtain a total precoding of data transmissions of M antenna ports corresponding to the first user equipment according to a precoding matrix corresponding to the target PMI in the second measurement result and a predefined combined weighting matrix matrix.
The apparatus according to claim 14, wherein the matrix determining module is specifically configured to:

Calculating a Kronecker product of the precoding matrix corresponding to the target PMI and the predefined combination weighting matrix in the second measurement result, and using the result of the calculation as the M antennas corresponding to the first user equipment The total precoding matrix of the data transmission of the port.
The apparatus according to any one of claims 8-15, wherein the at least one second type of reference signal is associated with a channel quality measurement process, and the channel quality measurement process comprises: based on the at least one second class The reference signal performs the second measurement result obtained by channel quality measurement, and the second measurement result includes at least one of channel quality information CQI, precoding matrix indication PMI, and rank indication RI.
A device for measuring channel quality, comprising:

a receiving module, configured to receive at least one reference signal sent by the first base station, where the reference signal is configured with a reference signal resource of the N antenna ports, where the antenna port of the data sent by the first base station is received by the first user equipment The number is M, the N is the maximum number of antenna ports supported by the second base station or the second user equipment, and the N and M are integers greater than 0, and M is greater than N;

a measuring module, configured to perform channel quality measurement based on the at least one reference signal, to obtain a first measurement result;

And a sending module, configured to send, to the first base station, the first measurement result measured by the measurement module.
The apparatus according to claim 17, wherein the at least one reference signal is configured by the first base station to be periodically or non-periodically configured by high layer signaling and sent to the first user equipment.
The device of claim 17 wherein:

The receiving module is further configured to receive a target reference signal that is sent by the first base station, where the target reference signal is determined by the first base station from the at least one reference signal according to the first measurement result. a reference signal for a preset screening rule;

The measuring module is further configured to perform channel quality measurement based on the target reference signal.
The apparatus according to any one of claims 17 to 19, wherein the at least one reference signal is associated with a channel quality measurement process, and the channel quality measurement process includes performing channel quality measurement based on the at least one reference signal Obtaining the first measurement result, the first measurement result includes at least one of channel quality information CQI, a precoding matrix indication PMI, and a rank indication RI.
A device for transmitting a signal, wherein the device is disposed in the first base station, and includes:

a signal sending module, configured to send, to the first user equipment, at least one reference signal, where the reference signal is configured with reference signal resources of the N antenna ports, so that the first user equipment performs channel quality based on the at least one reference signal The first measurement result is obtained, wherein the number of antenna ports of the data sent by the first base station to the first user equipment is M, and the N is the maximum number of antenna ports supported by the second base station or the second user equipment. N and M are integers greater than 0, and M is greater than N;

And an obtaining module, configured to acquire the first measurement result obtained by the first user equipment by performing channel quality measurement based on the at least one reference signal.
The device of claim 21, wherein the device further comprises:

a signal determining module, configured to determine, according to the first measurement result, a target reference signal that meets a preset screening rule from the at least one reference signal;

The signal sending module is further configured to send the target reference signal to the first user equipment, so that the first user equipment performs channel quality measurement according to the target reference signal.
The apparatus according to claim 21, wherein the at least one reference signal is configured by the first base station to be periodically or non-periodically configured by high layer signaling and sent to the first user equipment.
The device according to any one of claims 21 to 23, wherein the first measurement result includes a target PMI; the device further comprises:

a matrix determining module, configured to obtain a total precoding of data transmissions of M antenna ports corresponding to the first user equipment according to a precoding matrix corresponding to the target PMI in the first measurement result and a predefined combined weighting matrix matrix.
The apparatus according to claim 24, wherein the matrix determining module is specifically configured to:

Calculating a Kronecker product of the precoding matrix corresponding to the target PMI in the first measurement result and a predefined combination weighting matrix, and using the result of the calculation as the M antennas corresponding to the first user equipment The total precoding matrix of the data transmission of the port.
A device according to any one of claims 21-25, wherein

The acquiring module is further configured to receive a second measurement result that is sent by the second base station, where the second measurement result is obtained by performing, by the second user equipment corresponding to the second base station, channel quality measurement based on the at least one reference signal. .
The apparatus according to any one of claims 21-26, wherein the at least one reference signal is associated with a channel quality measurement process, and the channel quality measurement process comprises performing channel quality measurement based on the at least one reference signal Obtaining the first measurement result, the first measurement result includes at least one of channel quality information CQI, a precoding matrix indication PMI, and a rank indication RI.
A channel quality measurement method, comprising:

The first user equipment receives the first type of reference signal and the at least one second type of reference signal sent by the first base station, where the first base station is a base station configured with a two-dimensional antenna array, and the first type of reference signal is configured with a reference signal resource of the M antenna ports, the second type of reference signal is configured with reference signal resources of N antenna ports, the N and M are integers greater than 0, and M is greater than N;

The first user equipment performs channel quality measurement based on the first type of reference signal to obtain a first measurement result;

The first user equipment performs channel quality measurement based on the at least one second type reference signal, Obtaining a second measurement result;

The first user equipment sends the first measurement result and the second measurement result to the first base station.
The method according to claim 28, wherein the at least one second type of reference signal is configured by the first base station to be configured in a long period or non-periodically by high layer signaling, and sent to the first user equipment. of.
The method according to claim 28, wherein after the first user equipment sends the second measurement result to the first base station, the method further includes:

Receiving, by the first user equipment, a target reference signal that is sent by the first base station, where the target reference signal is determined by the first base station from the at least one second type of reference signal according to the second measurement result. a reference signal that satisfies a preset screening rule;

The first user equipment performs channel quality measurement based on the target reference signal.
The method according to any one of claims 28-30, wherein the N antenna ports of the second type of reference signal are combined and weighted by M antenna ports of the first type of reference signal.
A method according to any one of claims 28 to 31, wherein each of said second type of reference signals corresponds to a subset of said first measurements, said subset being according to said at least one The second type of reference signal indicates a codebook set obtained by grouping PMIs by precoding matrices corresponding to M antenna ports.
The method according to claim 32, wherein the first measurement result includes PMI information, and the PMI information is obtained according to a subset of the first measurement result corresponding to the target reference signal, the target The reference signal is a reference signal determined from the at least one second type of reference signal that satisfies a predetermined screening rule.
The method according to any one of claims 8 to 33, wherein the at least one second type reference signal is associated with a channel quality measurement process, and the channel quality measurement process is included based on the at least one second class The reference signal performs the second measurement result obtained by channel quality measurement, and the second measurement result includes at least one of channel quality information CQI, precoding matrix indication PMI, and rank indication RI.
A signal sending method, comprising:

Transmitting, by the first base station, the first type of reference signal and the at least one second type of reference signal to the first user equipment, so that the first user equipment performs according to the first type of reference signal and the at least one second type of reference signal Channel quality measurement; wherein the first base station is a base station configured with a two-dimensional antenna array, the first type of reference signal is configured with reference signal resources of M antenna ports, and the second type of reference signals are configured with N a reference signal resource of the antenna port, wherein N and M are integers greater than 0, and M is greater than N;

Obtaining, by the first base station, a first measurement result obtained by performing channel quality measurement by the first user equipment based on the first type reference signal, and a second measurement result obtained by performing channel quality measurement based on the at least one second type reference signal Measurement results.
The method according to claim 35, wherein the at least one second type of reference signal is configured by the first base station to be periodically or non-periodically configured by high layer signaling, and sent to the first user equipment. of.
The method according to claim 35, after the first base station acquires the second measurement result obtained by the first user equipment based on the channel quality measurement by the at least one second type reference signal, The method also includes:

Determining, by the first base station, a target reference signal that meets a preset screening rule from the at least one second type of reference signal according to the second measurement result;

The first base station sends the target reference signal to the first user equipment, so that the first user equipment performs channel quality measurement according to the target reference signal.
The method according to any one of claims 35-37, wherein the N antenna ports of the second type of reference signal are combined and weighted by M antenna ports of the first type of reference signal.
A method according to any one of claims 35 to 38, wherein each of said second type of reference signals corresponds to a subset of said first measurements, said subset being according to said at least one The second type of reference signal indicates a codebook set obtained by grouping PMIs by precoding matrices corresponding to M antenna ports.
The method according to claim 39, wherein the first measurement result includes PMI information, and the PMI information is obtained according to a subset of the first measurement result corresponding to the target reference signal, the target reference signal And a reference signal that is determined from the at least one second type of reference signal and that meets a preset screening rule.
The method according to any one of claims 35 to 40, wherein the second measurement result includes a target PMI; the method further comprises:

Determining, by the first base station, a total precoding matrix of data transmissions of M antenna ports corresponding to the first user equipment, according to a precoding matrix corresponding to the target PMI and a predefined combination weighting matrix in the second measurement result. .
The method according to claim 41, wherein the first base station obtains the M antenna ports according to a precoding matrix corresponding to a target PMI in the second measurement result and a predefined combined weighting matrix. The total precoding matrix for data transmission, including:

The first base station calculates a Kronecker product of a precoding matrix corresponding to a target PMI in the second measurement result and a predefined combination weight matrix, and uses the result of the calculation as the first user equipment. The total precoding matrix of the data transmission of the corresponding M antenna ports.
The method of any of claims 35-42, wherein the at least one second type of reference signal is associated with a channel quality measurement process, the channel quality measurement process comprising The at least one second type of reference signal performs the second measurement result obtained by channel quality measurement, and the second measurement result includes at least one of channel quality information CQI, precoding matrix indication PMI, and rank indication RI.
A channel quality measurement method, comprising:

The first user equipment receives the at least one reference signal sent by the first base station, where the reference signal is configured with a reference signal resource of the N antenna ports, where the number of antenna ports of the data sent by the first base station is received by the first user equipment In the case of M, the N is the maximum number of antenna ports supported by the second base station or the second user equipment, where N and M are integers greater than 0, and M is greater than N;

The first user equipment performs channel quality measurement based on the at least one reference signal to obtain a first measurement result;

The first user equipment sends the first measurement result to the first base station.
The method according to claim 44, wherein the at least one reference signal is configured by the first base station to be periodically or non-periodically configured by high layer signaling and sent to the first user equipment.
The method according to claim 44, wherein after the first user equipment sends the first measurement result to the first base station, the method further includes:

Receiving, by the first user equipment, the target reference signal that is sent by the first base station, where the target reference signal is a preset that is determined by the first base station from the at least one reference signal according to the first measurement result. Filter the reference signal of the rule;

The first user equipment performs channel quality measurement based on the target reference signal.
The method according to any one of claims 44-46, wherein the at least one reference signal is associated with a channel quality measurement process, and the channel quality measurement process comprises performing channel quality measurement based on the at least one reference signal Obtaining the first measurement result, the first measurement result includes at least one of channel quality information CQI, a precoding matrix indication PMI, and a rank indication RI.
A signal sending method, comprising:

The first base station sends at least one reference signal to the first user equipment, where the reference signal is configured with reference signal resources of the N antenna ports, so that the first user equipment performs channel quality measurement based on the at least one reference signal, a first measurement result, wherein the number of antenna ports of the data sent by the first base station to the first user equipment is M, and the N is the maximum number of antenna ports supported by the second base station or the second user equipment, where the N and M is an integer greater than 0, and M is greater than N;

Obtaining, by the first base station, the first measurement result obtained by performing channel quality measurement by the first user equipment based on the at least one reference signal.
The method according to claim 48, wherein after the first base station acquires the first measurement result obtained by the first user equipment based on the channel quality measurement by the at least one reference signal, the method further include:

Determining, by the first base station, a target reference signal that meets a preset screening rule from the at least one reference signal according to the first measurement result;

The first base station sends the target reference signal to the first user equipment, so that the first user equipment performs channel quality measurement according to the target reference signal.
The method according to claim 48, wherein the at least one reference signal is configured by the first base station to be periodically or aperiodically configured by high layer signaling and sent to the first user equipment.
The method according to any one of claims 48 to 50, wherein the first measurement result includes a target PMI; and the first base station receives the first measurement result sent by the first user equipment Thereafter, the method further includes:

Determining, by the first base station, a total precoding matrix of data transmissions of M antenna ports corresponding to the first user equipment, according to a precoding matrix corresponding to the target PMI in the first measurement result and a predefined combination weighting matrix .
The method according to claim 51, wherein the first base station obtains the first user equipment corresponding according to a precoding matrix corresponding to a target PMI in the first measurement result and a predefined combined weighting matrix. The total precoding matrix of the data transmission of the M antenna ports, including:

The first base station calculates a Kronecker product of a precoding matrix corresponding to a target PMI in the first measurement result and a predefined combination weight matrix, and uses the result of the calculation as the first user equipment. The total precoding matrix of the data transmission of the corresponding M antenna ports.
The method of any of claims 48-52, wherein the method further comprises:

The first base station receives the second measurement result sent by the second base station, where the second measurement result is obtained by the second user equipment corresponding to the second base station performing channel quality measurement based on the at least one reference signal.
The method according to any one of claims 48-53, wherein the at least one reference signal is associated with a channel quality measurement process, and the channel quality measurement process comprises performing channel quality measurement based on the at least one reference signal Obtaining the first measurement result, the first measurement result includes at least one of channel quality information CQI, a precoding matrix indication PMI, and a rank indication RI.
A user equipment, comprising the channel quality measuring apparatus according to any one of claims 1-7.
A base station, comprising the signal transmitting apparatus according to any one of claims 8-16.
A user equipment, comprising the channel quality measuring apparatus according to any one of claims 17-20.
A base station, comprising the signal transmitting apparatus according to any one of claims 21-27.
A communication system, comprising: a first user equipment and a first base station; wherein

The first base station is configured to send, to the first user equipment, a first type of reference signal and at least one second type of reference signal, where the first base station is a base station configured with a two-dimensional antenna array, where the a type of reference signal is configured with reference signal resources of M antenna ports, the second type of reference signal is configured with reference signal resources of N antenna ports, the N and M are integers greater than 0, and M is greater than N;

The first user equipment is configured to receive the first type reference signal and the at least one second type reference signal sent by the first base station, and perform channel quality measurement based on the first type reference signal to obtain a first a measurement result; performing channel quality measurement based on the at least one second type reference signal to obtain a second measurement result; and transmitting the first measurement result and the second measurement result to the first base station;

The first base station is further configured to receive a first measurement result obtained by the first user equipment based on the first type reference signal, and perform channel quality measurement based on the at least one second type reference signal. The second measurement result.
A communication system, comprising: a first user equipment and a first base station; wherein

The first base station is configured to send, to the first user equipment, at least one reference signal, where the reference signal is configured with reference signal resources of N antenna ports, where the first base station sends the information to the first user equipment The number of antenna ports of the data is M, the N is the maximum number of antenna ports supported by the second base station or the second user equipment, and the N and M are integers greater than 0, and M is greater than N;

The first user equipment is configured to receive at least one reference signal sent by the first base station, perform channel quality measurement based on the at least one reference signal, obtain a first measurement result, and send the first to the first base station a measurement result; wherein the reference signal is configured with a reference signal resource of N antenna ports, and the number of antenna ports of the data sent by the first base station received by the first user equipment is M;

The first base station is further configured to receive, by the first user equipment, the at least one reference signal. Performing the first measurement result obtained by channel quality measurement.