WO2014026320A1

WO2014026320A1 - Pilot signal configuration method, serving base station, and user equipment

Info

Publication number: WO2014026320A1
Application number: PCT/CN2012/080057
Authority: WO
Inventors: 吴作敏; 治欣慰; 杨建兵; 夏亮; 刘江华; 大卫·马瑞泽
Original assignee: 华为技术有限公司
Priority date: 2012-08-13
Filing date: 2012-08-13
Publication date: 2014-02-20
Also published as: CN103891371B; CN103891371A

Abstract

The present invention provides a pilot signal configuration method, a serving base station, and a user equipment (UE). The method comprises: a serving base station configuring at least two channel-state information reference signal (CSI-RS) resources for a UE, and notifying the UE that the at least two CSI-RS resources are configured by the serving base station; and the serving base station sending a demodulation reference signal (DMRS) to the UE, and notifying the UE that the DMRS is configured by the serving base station. The embodiments of the present invention can solve the problem that time frequency synchronization is not accurate enough when the foregoing three pilot signals do not come from a same station.

Description

Method for configuring pilot signal, service base station and user equipment

The present invention relates to wireless communication technologies, and in particular, to a method, a service base station and a user equipment for configuring a pilot signal. Background technique

In the Long Term Evolution Advanced (LTE-A) system, the enhanced NodeB (eNB) configures a Cell-Specific Reference Signal (CRS), and/or demodulates the reference signal (Demodulation). A pilot signal, such as a reference signal (DMRS) and/or a channel state information reference signal (CSI-RS), is applied to a user equipment (User Equipment, UE), and the DMRS may also be referred to as a user demodulation reference signal ( UE-Specific Reference Signal). Generally, after completing the synchronization and the cell search, the UE receives the CRS sequence sent by the serving cell, and completes the relevant measurement of the CSI according to the CRS sequence or the CSI-RS sequence configured by the eNB through the CRS sequence, and reports the related measurement to the eNB. When performing resource scheduling on the UE, the eNB refers to the measurement information reported by the UE, and schedules a Physical Downlink Shared Channel (PDSCH) for the UE in a certain transmission mode, and the UE detects that there is a downlink data packet. After that, the PDSCH is demodulated according to the CRS sequence or the DMRS sequence.

When the eNB configures the CRS, CSI-RS, and DMRS pilot signals for the UE, the UE performs CSI-related measurements according to the CSI-RS, and performs PDSCH demodulation according to the DMRS, if the above three pilot signals are from the same eNB, The UE can accurately synchronize to the eNB according to the CRS sequence. However, in a Coordinated Multiple Point Transmission/Reception (CoMP) scenario consisting of a macro base station and a Radio Remote Head (RH), both the macro base station and the RRH may have the same cell number. (Cell ID). In this scenario, the macro base station must transmit the CRS sequence, and the RH may or may not send the CRS sequence. Therefore, the CRS sequence received by the UE is from the macro base station, or is a superposed sequence of the CRS sequence sent by the macro base station and the RH. When the serving base station of the UE is a certain RH, that is, the RH sends the DMRS and the PDSCH to the UE, if the UE still uses the received CRS for time-frequency synchronization, it will synchronize to the macro base station or the stack. The sequence corresponding to the site is not accurately tracked to the RH served for it, which may result in poor demodulation performance of the UE. Summary of the invention

In view of this, the embodiment of the present invention provides a method for configuring a pilot signal, a serving base station, and a user equipment, to solve the problem that the time-frequency synchronization existing in the three pilot signals is not accurate from the same base station.

In a first aspect, a method for configuring a pilot signal is provided, including:

A serving base station configures at least two channel state information reference signal CSI-RS resources for one user equipment UE, and notifies the UE that the at least two CSI-RS resources are configured by the serving base station;

The serving base station sends a demodulation reference signal DMRS to the UE, and notifies the UE that the DMRS is configured by the serving base station.

In a first possible implementation of the first aspect,

At least two CSI-RS resources of the at least two CSI-RS resources are mapped to different orthogonal frequency division multiplexing OFDM symbols; or

The subframe indicated by the subframe configuration information included in the at least two CSI-RS resources is one subframe or two subframes.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, the notifying the UE that the at least two CSI-RS resources are configured by the serving base station , including:

Transmitting, by the UE, first radio resource control RRC signaling, where the first RRC signaling includes:

a CSI-RS configuration information unit, where the CSI-RS configuration information unit includes the at least two CSI-RS resources, so that the UE determines the CSI-RS resources included in the first RRC signaling to be Configured by the serving base station; or

At least two CSI-RS configuration information units, each of the at least two CSI-RS configuration information units including one CSI-RS resource of the at least two CSI-RS resources, and An indication information, and the first indication information in the at least two CSI-RS configuration information units is the same, so that the UE, according to the same first indication information, At least two CSI-RS resources are determined to be configured by the serving base station; or, one CSI-RS configuration information unit, the CSI-RS configuration information unit includes a first CSI-RS resource and at least one first pairing information Each of the at least one first pairing information is used to indicate time-frequency resource location information of the second CSI-RS resource in one physical resource block PRB, or the first pairing information is used by each of the first pairing information. And indicating time-frequency resource location information of the second CSI-RS resource with respect to the first CSI-RS resource, so that the UE indicates the first CSI-RS resource and the first pairing information The second CSI-RS resource is determined to be configured by the serving base station, where the first CSI-RS resource is any one of the at least two CSI-RS resources, and the second CSI-RS The resource is any one of the at least two CSI-RS resources that is different from the first CSI-RS resource, where the first CSI-RS resource and the second CSI-RS resource share time-sharing Other CSI-RS resource parameters outside the frequency resource location information.

With reference to the first aspect or any one of the possible implementation manners of the first aspect, in a third possible implementation, the notifying that the DMRS of the UE is configured by the serving base station includes: The UE sends the first downlink control information DCI signaling to notify the UE that the DMRS is configured by the serving base station, where the first DCI signaling includes second indication information, and the second indication information is used by Instructing at least one CSI-RS resource of the DMRS and the at least two CSI-RS resources to be configured by the serving base station to notify the UE of the DMRS and the at least two CSI-RS resources Is configured by the serving base station; or

Notifying that the DMRS is configured by the serving base station by sending the first RRC signaling to the UE, where the first RRC signaling includes second indication information, where the second indication information is used. Indicating that at least one of the DMRS and the at least two CSI-RS resources is configured by the serving base station to notify the UE that the DMRS and the at least two CSI-RS resources are Configured by the serving base station; or

Notifying that the DMRS is configured by the serving base station by sending the second RRC signaling to the UE, where the second RRC signaling includes second indication information, where the second indication information is used. Instructing the at least one CSI-RS resource of the DMRS and the at least two CSI-RS resources to be configured by the serving base station to notify the UE of the DMRS and the at least two CSI-RS resources It is configured by the serving base station.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a fourth possible implementation, the notifying the UE that the at least two CSI-RS resources are configured by the serving base station Before the method, the method further includes: sending RRC signaling to the UE, where the RRC signaling includes a first CSI-RS resource, where the first CSI-RS resource is the at least two CSIs - any CSI-RS resource in the RS resource;

The notifying that the at least two CSI-RS resources of the UE are configured by the serving base station, including: sending, to the UE, second downlink control information DCI signaling, where the second DCI signaling is Include at least one second pairing information, where each second pairing information of the at least one second pairing information is used to indicate that the second CSI-RS resource is relative to the first CSI-RS resource in one physical resource block PRB The time-frequency resource location information, or the second second pairing information is used to indicate time-frequency resource location information of the second CSI-RS resource, where the second CSI-RS resource is the at least two CSIs Any one of the CSI-RS resources in the RS resource that is different from the first CSI-RS resource, so that the UE uses the first CSI-RS resource and the second CSI indicated by the second pairing information The RS resource is determined to be configured by the serving base station, and the first CSI-RS resource and the second CSI-RS resource share other CSI-RS resource parameters except the time-frequency resource location information.

With reference to the fourth possible implementation manner of the first aspect, in a fifth possible implementation, the sending, by the UE, a demodulation reference signal DMRS, and notifying the UE that the DMRS is by the serving base station Configured, including:

Transmitting the DMRS to the UE in a subframe that is the same as the second DCI signaling, so that the UE compares the at least two CSI-RS resources indicated by the second DCI signaling The DMRS transmitted within the sub-frame is configured by the serving base station.

In a second aspect, a method for configuring a pilot signal is provided, including:

The serving base station sends the first downlink control information DCI signaling to the first user equipment UE, where the first DCI signaling includes first indication information, where the first indication information is used to indicate when the first demodulation reference signal DMRS is sent. Not transmitting the physical downlink shared channel PDSCH at different times;

The serving base station sends the first DMRS to the first UE and does not send the PDSCH.

In a first possible implementation of the second aspect,

The sending the first DCI signaling includes:

After detecting the first UE access, sending the first DCI signaling; or receiving the uplink signaling sent by the first UE, and sending the first DCI signaling according to the uplink signaling. With reference to the second aspect, or the first possible implementation manner of the second aspect, in a second possible implementation manner, the sending, by the first UE, the first DMRS and not sending the PDSCH, After the first DCI signaling, the first DMRS is periodically sent and the PDSCH is not sent; or

Sending the first DMRS once and not transmitting the first DCI signaling

PDSCH.

With the second aspect or any possible implementation manner of the foregoing aspect, in a third possible implementation, the serving base station sends the first DMRS to the first UE and does not send the PDSCH Includes:

The serving base station sends the first DMRS to the first UE and does not send the PDSCH, and the serving base station sends a second DMRS to the second UE on the time-frequency resource corresponding to the first DMRS. The serving base station sends the second PDSCH corresponding to the second DMRS to the second UE.

With the second aspect or any possible implementation manner of the foregoing aspect, in a fourth possible implementation manner, after the serving base station sends the first DMRS to the first UE and does not send the PDSCH, The method further includes:

Transmitting, to the first UE, a third PDSCH and a third DMRS that is simultaneously sent with the third PDSCH, so that the first UE demodulates the third PDSCH according to the third DMRS.

With reference to the fourth possible implementation manner of the second aspect, in a fifth possible implementation manner, before the serving base station sends the first DMRS to the first UE and does not send the PDSCH, or The method, the method further includes: sending, by the serving base station, the first DMRS to the first UE and not transmitting the PDSCH, the method further includes: sending, to the first UE, a first virtual cell number used to generate the first DMRS Parameter

Before the sending, by the first UE, the third PDSCH and the third DMRS that are sent simultaneously with the third PDSCH, or sending the third PDSCH to the first UE and sending the third PDSCH simultaneously The third DMRS, the method further includes: sending, to the first UE, a second virtual cell number parameter for generating the third DMRS,

The first virtual cell number parameter and the second virtual cell number parameter are the same, so that the UE learns the first DMRS according to the same first virtual cell number parameter and the second cell virtual number parameter. The third DMRS is configured by the serving base station. With the fourth possible implementation of the second aspect, in a sixth possible implementation, before the third PDSCH is sent to the first UE and the third DMRS is sent simultaneously with the third PDSCH, or And the method, the method further includes: sending, by the serving base station, radio resource control RRC signaling to the first UE, where the first UE sends a third PDSCH and a third DMRS that is sent simultaneously with the third PDSCH, where The RRC signaling includes a second indication information, where the second indication information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station, so that the UE learns according to the second indication information. The first DMRS and the third DMRS are configured by the serving base station; or

Before transmitting the third PDSCH to the first UE and the third DMRS that is simultaneously transmitted with the third PDSCH, or sending the third PDSCH to the first UE and the third DMRS that is simultaneously sent with the third PDSCH The method further includes: the first DCI signaling further includes second indication information, where the second indication information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station, The UE is configured to learn, according to the second indication information, that the first DMRS and the third DMRS are configured by the serving base station; or

Before transmitting the third PDSCH to the first UE and the third DMRS that is simultaneously transmitted with the third PDSCH, or sending the third PDSCH to the first UE and the third DMRS that is simultaneously sent with the third PDSCH The method further includes: the serving base station sending the second DCI signaling to the first UE, where the second DCI signaling includes second indication information, where the second indication information is used to indicate the A DMRS and the third DMRS are configured by the serving base station, so that the UE learns, according to the second indication information, that the first DMRS and the third DMRS are configured by the serving base station.

In a third aspect, a method for configuring a pilot signal is provided, including:

A user equipment UE learns at least two channel state information reference signal CSI-RS resources configured by one serving base station, and the at least two CSI-RS resources are configured by the serving base station; the UE receives the serving base station The transmitted demodulation reference signal DMRS is learned, and the DMRS is configured by the serving base station.

In a first possible implementation of the third aspect,

The UE is configured to learn at least two CSI-RS resources configured by the serving base station, and the at least two CSI-RS resources are configured by the serving base station, including:

Receiving, by the UE, first radio resource control RRC signaling sent by the serving base station, where The first RRC signaling includes:

At least two CSI-RS configuration information units, each of the at least two CSI-RS configuration information units including one CSI-RS resource of the at least two CSI-RS resources, and An indication information, and the first indication information in the at least two CSI-RS configuration information units is the same, so that the UE, according to the same first indication information, the at least two CSIs The RS resource is determined to be configured by the serving base station; or

a CSI-RS configuration information unit, where the CSI-RS configuration information unit includes a first CSI-RS resource and at least one first pairing information, and each of the at least one first pairing information is used to indicate Time-frequency resource location information of the second CSI-RS resource in one physical resource block PRB, or the first first pairing information is used to indicate that the second CSI-RS resource is relative to the first CSI-RS resource Frequency resource location information, so that the UE determines that the first CSI-RS resource and the second CSI-RS resource indicated by the first pairing information are configured by the serving base station, where the first The CSI-RS resource is any one of the at least two CSI-RS resources, and the second CSI-RS resource is the first CSI-RS among the at least two CSI-RS resources The CSI-RS resource is different from the CSI-RS resource, and the first CSI-RS resource and the second CSI-RS resource share other CSI-RS resource parameters except the time-frequency resource location information.

With reference to the first possible implementation manner of the third aspect, in a second possible implementation, the learning that the DMRS is configured by the base station includes:

And receiving the first downlink control information DCI signaling sent by the serving base station, where the first DCI signaling includes second indication information, where the second indication information is used to indicate the DMRS and the at least two CSIs At least one CSI-RS resource in the RS resource is configured by the serving base station, and according to the first DCI signaling, the DMRS and the at least two CSI-RS resources are configured by the serving base station; or

Receiving, by the serving base station, the first RRC signaling, where the first RRC signaling includes second indication information, where the second indication information is used to indicate at least the DMRS and the at least two CSI-RS resources A CSI-RS resource is configured by the serving base station, and according to the first RRC signaling, the DMRS and the at least two CSI-RS resources are configured by the serving base station; or

Receiving, by the serving base station, the second RRC signaling, where the second RRC signaling includes second indication information, where the second indication information is used to indicate at least the DMRS and the at least two CSI-RS resources A CSI-RS resource is configured by the serving base station, and according to the second RRC signaling, the DMRS and the at least two CSI-RS resources are configured by the serving base station.

With reference to the third aspect, in a third possible implementation manner, the at least two channel state information reference signal CSI-RS resources configured by one serving base station are learned, and the at least two CSI-RS resources are Configured by the serving base station, including:

Receiving RRC signaling sent by the serving base station, where the RRC signaling includes a first CSI-RS resource, where the first CSI-RS resource is any one of the at least two CSI-RS resources -RS resources;

Receiving, by the serving base station, the second DCI signaling, where the second DCI signaling includes at least one second pairing information, where each second pairing information of the at least one second pairing information is used to indicate that a time-frequency resource location information of the second CSI-RS resource in the physical resource block PRB relative to the first CSI-RS resource, or the second second pairing information is used to indicate the second CSI-RS resource The time-frequency resource location information, the second CSI-RS resource is any one of the at least two CSI-RS resources that is different from the first CSI-RS resource, the first CSI - the RS resource and the second CSI-RS resource share other CSI-RS resource parameters except the time-frequency resource location information;

The first CSI-RS resource and the second CSI-RS resource indicated by the second pairing information are determined to be configured by the serving base station.

With reference to the third possible implementation manner of the third aspect, in a fourth possible implementation manner, the receiving, by the serving base station, the DMRS is configured by the serving base station, including :

Receiving, in the same subframe as the second DCI signaling, the DMRS sent by the serving base station;

And determining, by the second DCI signaling, the at least two CSI-RS resources and the DMRS sent in the subframe as being configured by the serving base station.

In a fourth aspect, a method for configuring a pilot signal is provided, including:

The user equipment UE receives the first downlink control information DCI signaling sent by the serving base station, where the A DCI signaling includes first indication information, where the first indication information is used to indicate that the physical downlink shared channel PDSCH is not sent when the first demodulation reference signal DMRS is sent;

Receiving, by the UE, the first DMRS sent by the serving base station, where the first DMRS is different from the PDSCH.

In a first possible implementation of the fourth aspect,

Also includes:

Receiving, by the UE, a third PDSCH sent by the serving base station and a third DMRS sent simultaneously with the third PDSCH;

The UE demodulates the third PDSCH according to the third DMRS.

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

Receiving, by the UE, a first virtual cell number parameter that is used by the serving base station to generate the first DMRS, and a second virtual cell number parameter that is used to generate the third DMRS, where the first virtual cell number is The parameter is the same as the second virtual cell number parameter;

The UE learns that the first DMRS and the third DMRS are configured by the serving base station according to the same first virtual cell number parameter and the second cell virtual number parameter.

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

The UE receives the radio resource control RRC signaling sent by the serving base station, where the RRC signaling includes second indication information, where the second indication information is used to indicate that the first DMRS and the third DMRS are And configuring, by the serving base station, the first DMRS and the third DMRS are configured by the serving base station according to the second indication information; or, the first DCI signaling further includes The second indication information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station, and the UE learns the first DMRS according to the second indication information. Said third DMRS is configured by said serving base station; or

Receiving, by the UE, the second DCI signaling sent by the serving base station, where the second DCI signaling includes second indication information, where the second indication information is used to indicate the first DMRS and the third DMRS And being configured by the serving base station; the UE, according to the second indication information, that the first DMRS and the third DMRS are configured by the serving base station. In a fifth aspect, a serving base station is provided, including:

a configuration module, configured to configure at least two channel state information reference signal CSI-RS resources for one user equipment UE, and notify the UE that the at least two CSI-RS resources are configured by the monthly service base station;

And a first sending module, configured to send a demodulation reference signal DMRS to the UE, and notify the UE that the DMRS is configured by the serving base station.

In a first possible implementation of the fifth aspect,

At least two CSI-RS resources of the at least two CSI-RS resources configured by the configuration module are mapped to different orthogonal frequency division multiplexing OFDM symbols; or

The subframe indicated by the subframe configuration information included in the at least two CSI-RS resources is one subframe, or two subframes.

With reference to the fifth aspect or the first possible implementation manner of the fifth aspect, in a second possible implementation manner, the configuration module is specifically configured to:

a CSI-RS configuration information unit, where the CSI-RS configuration information unit includes a first CSI-RS resource and at least one first pairing information, and each of the at least one first pairing information is used to indicate Time-frequency resource location information of the second CSI-RS resource in one physical resource block PRB, or the first first pairing information is used to indicate that the second CSI-RS resource is relative to the first CSI-RS resource Frequency resource location information, so that the UE determines that the first CSI-RS resource and the second CSI-RS resource indicated by the first pairing information are configured by the serving base station, where the first The CSI-RS resource is any one of the at least two CSI-RS resources

10 a CSI-RS resource, where the second CSI-RS resource is any one of the at least two CSI-RS resources that is different from the first CSI-RS resource, the first CSI-RS resource And sharing, by the second CSI-RS resource, other CSI-RS resource parameters except the time-frequency resource location information.

In conjunction with the second possible implementation of the fifth aspect, in a third possible implementation manner, the method further includes:

a second sending module, configured to send the first downlink control information to the UE, to notify the UE that the DMRS is configured by the serving base station, where the first DCI signaling includes a second Instructing information, the second indication information is used to indicate that at least one CSI-RS resource of the DMRS and the at least two CSI-RS resources is configured by the serving base station, to notify the UE of the DMRS And the at least two CSI-RS resources are configured by the serving base station; or the first RRC signaling is sent to the UE to notify the UE that the DMRS is configured by the serving base station, where The first RRC signaling includes second indication information, where the second indication information is used to indicate that at least one CSI-RS resource of the DMRS and the at least two CSI-RS resources is configured by the serving base station, to Notifying the UE that the DMRS and the at least two CSI-RS resources are configured by the serving base station; or

With reference to the fifth aspect, or the first possible implementation manner of the fifth aspect, in a fourth possible implementation manner, the configuration module is specifically configured to:

Sending RRC signaling to the UE, where the RRC signaling includes a first CSI-RS resource, where the first CSI-RS resource is any one of the at least two CSI-RS resources Resource

Transmitting, by the UE, second downlink control information DCI signaling, where the second DCI signaling includes at least one second pairing information, where each second pairing information in the at least one second pairing information is used to indicate The time-frequency resource location information of the second CSI-RS resource relative to the first CSI-RS resource in a physical resource block PRB, or the second second pairing information is used to indicate the second CSI-RS Time-frequency resource location information of the resource, where the second CSI-RS resource is the at least

1 1 Any one of the two CSI-RS resources that is different from the first CSI-RS resource, so that the UE indicates the first CSI-RS resource and the second pairing information The second CSI-RS resource is determined to be configured by the serving base station, and the first CSI-RS resource and the second CSI-RS resource share other CSI-RS resource parameters except the time-frequency resource location information.

With the fourth possible implementation of the fifth aspect, in a fifth possible implementation, the first sending module is specifically configured to:

In a sixth aspect, a serving base station is provided, including:

The first sending module is configured to send the first downlink control information DCI signaling to the first user equipment UE, where the first DCI signaling includes first indication information, where the first indication information is used to indicate that the first solution is sent When the reference signal DMRS is adjusted, the physical downlink shared channel PDSCH is not sent at the same time;

And a second sending module, configured to send the first DMRS to the first UE and not send the PDSCH.

In a first possible implementation of the sixth aspect,

The first sending module is specifically configured to:

After detecting the access of the first UE, sending the first DCI signaling; or receiving uplink signaling sent by the first UE, and sending the first DCI signaling according to the uplink signaling.

With reference to the sixth aspect, or the first possible implementation manner of the sixth aspect, in a second possible implementation manner, the second sending module is specifically configured to:

After the first DCI signaling is sent, the first DMRS is periodically sent and the PDSCH is not sent; or

The first DMRS is sent once and the PDSCH is not sent every time the first DCI signaling is sent.

With the sixth aspect or any one of the possible implementation manners of the sixth aspect, in a third possible implementation, the third sending module is configured to send, to the second UE, the time-frequency resource corresponding to the first DMRS Sending a second DMRS, and the serving base station sends the second PDSCH corresponding to the second DMRS to the second UE. With the sixth aspect or any possible implementation manner of the sixth aspect, in a fourth possible implementation, the method further includes:

a fourth sending module, configured to send, to the first UE, a third PDSCH and a third DMRS that is sent simultaneously with the third PDSCH, so that the first UE demodulates the third PDSCH according to the third DMRS .

With reference to the fourth possible implementation manner of the sixth aspect, in a fifth possible implementation manner, the method further includes:

a fifth sending module, configured to send, to the first UE, a first virtual cell number parameter used to generate the first DMRS; and send, to the first UE, a second, used to generate the third DMRS a virtual cell number parameter, where the first virtual cell number parameter and the second virtual cell number parameter are the same, so that the UE learns the information according to the same first virtual cell number parameter and the second cell virtual number parameter. The first DMRS and the third DMRS are configured by the serving base station.

With the fourth possible implementation of the sixth aspect, in a sixth possible implementation, the first DCI signaling further includes second indication information, where the second indication information is used to indicate the a DMRS and the third DMRS are configured by the serving base station, so that the UE learns, according to the second indication information, that the first DMRS and the third DMRS are configured by the serving base station; or The service base station further includes:

a sixth sending module, configured to send radio resource control RRC signaling to the first UE, where the RRC signaling includes second indication information, where the second indication information is used to indicate the first DMRS and the The third DMRS is configured by the serving base station, so that the UE learns, according to the second indication information, that the first DMRS and the third DMRS are configured by the serving base station; or, to the first UE Transmitting a second DCI signaling, where the second DCI signaling includes second indication information, where the second indication information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station, so that The UE learns, according to the second indication information, that the first DMRS and the third DMRS are configured by the serving base station.

In a seventh aspect, a UE is provided, including:

a first learning module, configured to learn at least two channel state information reference signal CSI-RS resources configured by one serving base station, and the at least two CSI-RS resources are configured by the serving base station;

13 The second learning module is configured to receive the demodulation reference signal DMRS sent by the serving base station, and learn that the DMRS is configured by the serving base station.

In a first possible implementation of the seventh aspect,

The first learning module is specifically configured to:

Receiving, by the serving base station, first radio resource control RRC signaling, where the first RRC signaling includes:

With reference to the first possible implementation of the seventh aspect, in a second possible implementation, the second learning module is specifically configured to:

And receiving the first downlink control information DCI signaling sent by the serving base station, where the first DCI signaling includes second indication information, where the second indication information is used to indicate the DMRS and the at least two CSIs At least one CSI-RS resource in the RS resource is configured by the serving base station, and according to the first DCI signaling, the DMRS and the at least two CSI-RS resources are the serving base station. Configured; or

Receiving, by the serving base station, the second RRC signaling, where the second RRC signaling includes second indication information, where the second indication information is used to indicate at least the DMRS and the at least two CSI-RS resources A CSI-RS resource is configured by the serving base station, and according to the second RRC signaling, the DMRS and the at least two CSI-RS resources are configured by the serving base station. .

In a third possible implementation manner of the seventh aspect, the first learning module is specifically configured to: receive RRC signaling sent by the serving base station, where the RRC signaling includes a first CSI-RS resource The first CSI-RS resource is any one of the at least two CSI-RS resources;

With reference to the third possible implementation manner of the seventh aspect, in a fourth possible implementation, the second learning module is specifically configured to:

15 In an eighth aspect, a UE is provided, including:

The first receiving module is configured to receive the first downlink control information DCI signaling sent by the serving base station, where the first DCI signaling includes first indication information, where the first indication information is used to indicate to send the first demodulation reference The signal DMRS does not simultaneously transmit the physical downlink shared channel PDSCH;

And a second receiving module, configured to receive the first DMRS sent by the serving base station, where the first DMRS is not sent when the PDSCH is different from the PDSCH.

In a first possible implementation of the eighth aspect,

a third receiving module, configured to receive a third PDSCH sent by the serving base station and a third DMRS that is sent simultaneously with the third PDSCH;

And a demodulation module, configured to demodulate the third PDSCH according to the third DMRS.

With reference to the first possible implementation manner of the eighth aspect, in a second possible implementation manner, the method further includes:

a fourth receiving module, configured to receive a first virtual cell number parameter that is used by the serving base station to generate the first DMRS, and a second virtual cell number parameter that is used to generate the third DMRS, where a virtual cell number parameter and the second virtual cell number parameter are the same; the first determining module is configured to learn, according to the same first virtual cell number parameter and the second cell virtual number parameter, the first DMRS and The third DMRS is configured by the serving base station.

In conjunction with the first possible implementation of the eighth aspect, in a third possible implementation manner, the method further includes:

a fifth receiving module, configured to receive radio resource control RRC signaling sent by the serving base station, where the RRC signaling includes second indication information, where the second indication information is used to indicate the first DMRS and the The third DMRS is configured by the serving base station; the UE is configured to learn, according to the second indication information, that the first DMRS and the third DMRS are configured by the serving base station; or, receive the sending by the serving base station a second DCI signaling, where the second DCI signaling includes second indication information, where the second indication information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station; The UE is configured to learn, according to the second indication information, that the first DMRS and the third DMRS are configured by the serving base station; or that the first DCI signaling further includes second indication information, where the second indication is The information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station, and the UE learns the first according to the second indication information. a DMRS and the third DMRS are configured by the serving base station;

And a second determining module, configured to learn, according to the second indication information, that the first DMRS and the third DMRS are configured by the serving base station.

In a ninth aspect, a serving base station is provided, including:

a processor, configured to configure at least two channel state information reference signals CSI-RS resources for one user equipment UE;

a transmitter, configured to send the at least two CSI-RS resources to the UE, and notify the UE that the at least two CSI-RS resources are configured by the serving base station, and send to the UE Demodulating the reference signal DMRS, and notifying the UE that the DMRS is configured by the serving base station.

In a first possible implementation of the ninth aspect,

At least two CSI-RS resources of the at least two CSI-RS resources configured by the processor are mapped to different orthogonal frequency division multiplexing OFDM symbols; or

With reference to the ninth aspect or the first possible implementation manner of the ninth aspect, in a second possible implementation manner, the transmitter is specifically configured to:

a CSI-RS configuration information unit, where the CSI-RS configuration information unit includes a first CSI-RS resource and at least one first pairing information, and each of the at least one first pairing information is used to indicate Time-frequency resource bits of the second CSI-RS resource in one physical resource block PRB

17 Information, or the first first pairing information is used to indicate time-frequency resource location information of the second CSI-RS resource with respect to the first CSI-RS resource, so that the UE sends the first CSI-RS The resource and the second CSI-RS resource indicated by the first pairing information are determined to be configured by the serving base station, where the first CSI-RS resource is any one of the at least two CSI-RS resources a CSI-RS resource, where the second CSI-RS resource is any one of the at least two CSI-RS resources that is different from the first CSI-RS resource, the first CSI-RS resource The resource and the second CSI-RS resource share other CSI-RS resource parameters except the time-frequency resource location information.

In conjunction with the second possible implementation of the ninth aspect, in a third possible implementation, the transmitter is further configured to:

Notifying that the DMRS is configured by the serving base station by sending the first downlink control information DCI signaling to the UE, where the first DCI signaling includes second indication information, the second The indication information is used to indicate that at least one CSI-RS resource of the DMRS and the at least two CSI-RS resources is configured by the serving base station, to notify the UE of the DMRS and the at least two CSIs - the RS resource is configured by the serving base station; or

With reference to the ninth aspect or the first possible implementation manner of the ninth aspect, in a fourth possible implementation manner, the transmitter is specifically configured to:

Sending, to the UE, second downlink control information, DCI signaling, where the second DCI signaling

18 Included in the at least one second pairing information, where each second pairing information in the at least one second pairing information is used to indicate that the second CSI-RS resource is relative to the first CSI-RS resource in one physical resource block PRB The time-frequency resource location information, or the second second pairing information is used to indicate time-frequency resource location information of the second CSI-RS resource, where the second CSI-RS resource is the at least two Any one of the CSI-RS resources that is different from the first CSI-RS resource, so that the UE sends the first CSI-RS resource and the second CSI indicated by the second pairing information The RS resource is determined to be configured by the serving base station, and the first CSI-RS resource and the second CSI-RS resource share other CSI-RS resource parameters except the time-frequency resource location information.

In conjunction with the fourth possible implementation of the ninth aspect, in a fifth possible implementation, the transmitter is further configured to:

In a tenth aspect, a serving base station is provided, including:

a processor, configured to generate first downlink control information DCI signaling and a first demodulation reference signal DMRS;

a transmitter, configured to send first downlink control information DCI signaling to the first user equipment UE, where the first DCI signaling includes first indication information, where the first indication information is used to indicate that the first demodulation reference is sent The signal DMRS does not simultaneously transmit the physical downlink shared channel PDSCH.

In a first possible implementation of the tenth aspect,

The transmitter is specifically configured to:

With reference to the tenth aspect or the first possible implementation manner of the tenth aspect, in a second possible implementation manner, the transmitter is further configured to:

The first DMRS is sent once and the PDSCH is not sent every time the first DCI signaling is sent. With reference to the tenth aspect or any one of the possible implementation manners of the tenth aspect, in a third possible implementation manner, the transmitter is further configured to:

With reference to the tenth aspect or any one of the possible implementation manners of the tenth aspect, in a fourth possible implementation manner, the transmitter is further configured to:

With the fourth possible implementation of the tenth aspect, in a fifth possible implementation, the transmitter is further configured to:

Transmitting, to the first UE, a first virtual cell number parameter for generating the first DMRS; and transmitting, to the first UE, a second virtual cell number parameter for generating the third DMRS; The first virtual cell number parameter and the second virtual cell number parameter are the same, so that the UE learns the first DMRS and the third according to the same first virtual cell number parameter and the second cell virtual number parameter. The DMRS is configured by the serving base station.

With the fourth possible implementation of the tenth aspect, in a sixth possible implementation, the transmitter is further configured to:

Transmitting RRC signaling to the first UE, where the RRC signaling includes second indication information, where the second indication information is used to indicate that the first DMRS and the third DMRS are the service The base station is configured to enable the UE to learn, according to the second indication information, that the first DMRS and the third DMRS are configured by the serving base station; or that the first DCI signaling further includes a second indication. The second indication information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station, so that the UE learns the first DMRS according to the second indication information, and the The third DMRS is configured by the serving base station; or

Sending the second DCI signaling to the first UE, where the second DCI signaling includes second indication information, where the second indication information is used to indicate that the first DMRS and the third DMRS are The serving base station is configured, so that the UE learns the first DMRS according to the second indication information.

20 And the third DMRS is configured by the serving base station.

In an eleventh aspect, a UE is provided, including:

a receiver, configured to receive at least two channel state information reference signal CSI-RS resources configured by the same serving base station, and receive a demodulation reference signal DMRS sent by the serving base station;

And a processor, configured to learn that the at least two channel state information reference signals, CSI-RS resources, are configured by the serving base station, and that the DMRS is configured by the serving base station.

In a first possible implementation of the eleventh aspect,

The receiver is specifically used for

With reference to the first possible implementation manner of the eleventh aspect, in a second possible implementation manner, the receiver is specifically configured to receive, by using the first downlink control information, the DCI signaling sent by the serving base station, The first DCI signaling includes second indication information, where the second indication information is used to indicate that at least one of the DMRS and the at least two CSI-RS resources is configured by the serving base station. The processor is specifically configured to learn, according to the first DCI signaling, that the DMRS and the at least two CSI-RS resources are configured by the serving base station;

Or,

The receiver is specifically configured to receive the first RRC signaling sent by the serving base station, where the first RRC signaling includes second indication information, where the second indication information is used to indicate the DMRS and the at least two At least one CSI-RS resource of the CSI-RS resources is configured by the serving base station; the processor is specifically configured to learn, according to the first RRC signaling, the DMRS and the at least two CSI-RS resources Is configured by the serving base station;

Or,

The receiver is specifically configured to receive the second RRC signaling sent by the serving base station, where the second RRC signaling includes second indication information, where the second indication information is used to indicate the DMRS and the at least two At least one CSI-RS resource of the CSI-RS resources is configured by the serving base station; the processor is specifically configured to learn, according to the second RRC signaling, the DMRS and the at least two CSI-RS resources It is configured by the serving base station.

With the third possible implementation of the eleventh aspect, the receiver is specifically configured to receive the RRC signaling sent by the serving base station, where the RRC signaling includes a first CSI-RS resource, where The first CSI-RS resource is any one of the at least two CSI-RS resources, and receives the second DCI signaling sent by the serving base station, where the second DCI signaling includes at least a second pairing information, where each second pairing information in the at least one second pairing information is used to indicate a time frequency of the second CSI-RS resource relative to the first CSI-RS resource in one physical resource block PRB The resource location information, or the second CSI-RS resource is used to indicate the time-frequency resource location information of the second CSI-RS resource, where the second CSI-RS resource is the at least two CSI-RSs Any one of the CSI-RS resources in the resource that is different from the first CSI-RS resource, where the first CSI-RS resource and the second CSI-RS resource share other CSI-RSs except the time-frequency resource location information Resource parameter

The processor is specifically configured to determine, by the first CSI-RS resource and the second CSI-RS resource indicated by the second pairing information, that the resource is configured by the serving base station.

In conjunction with the third possible implementation of the eleventh aspect, in a fourth possible implementation manner, The receiver is specifically configured to receive the DMRS sent by the serving base station in a same subframe as the second DCI signaling;

The processor is specifically configured to determine, by using the at least two CSI-RS resources indicated by the second DCI signaling, the DMRS sent in the subframe as the serving base station.

According to a twelfth aspect, a UE is provided, including:

a receiver, configured to receive first downlink control information DCI signaling sent by the serving base station, where the first DCI signaling includes first indication information, where the first indication information is used to indicate sending the first demodulation reference signal DMRS And transmitting, by the serving base station, the first DMRS, where the first DMRS is different from the PDSCH, and the processor is configured to buffer the first DCI signaling and The first DMRS.

In a first possible implementation of the twelfth aspect,

The receiver is further configured to receive a third PDSCH sent by the serving base station and a third DMRS that is sent simultaneously with the third PDSCH;

The processor is further configured to demodulate the third PDSCH according to the third DMRS.

With reference to the first possible implementation manner of the twelfth aspect, in a second possible implementation, the receiver is further configured to: receive, by the serving base station, a first, used by the serving base station to generate the first DMRS a virtual cell number parameter, and a second virtual cell number parameter used to generate the third DMRS, where the first virtual cell number parameter and the second virtual cell number parameter are the same;

The processor is further configured to learn, according to the same first virtual cell number parameter and the second cell virtual number parameter, that the first DMRS and the third DMRS are configured by the serving base station. With the second possible implementation of the twelfth aspect, in a third possible implementation, the receiver is further configured to: receive radio resource control RRC signaling sent by the serving base station, where the RRC The second indication information is included in the command, where the second indication information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station; or, the first DCI signaling further includes a second Instructing information, the second indication information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station; or, receiving second DCI signaling sent by the serving base station, the second The second indication information is used in the DCI signaling, where the second indication information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station;

The processor is further configured to learn, according to the second indication information, the first DMRS and the first The three DMRSs are configured by the serving base station.

With the above technical solution, the same serving base station configures at least two CSI-RS resources of the co-station for the same UE, and the at least two CSI-RS resources are co-located with the DMRS, that is, the UE is the UE with the monthly service base station. The scheduled PDSCH co-station, therefore, when the UE uses the CSI-RS resources of the co-located station for time-frequency synchronization, it can synchronize to the serving base station, improving the accuracy of the time-frequency synchronization, thereby improving the demodulation performance. Or, the serving base station configures the DMRS that is not simultaneously transmitted by the UE with the PDSCH, and the UE may perform time-frequency synchronization according to the DMRS that is not simultaneously transmitted with the PDSCH, because the DMRS that is not simultaneously transmitted with the PDSCH is also sent by the serving base station that schedules the PDSCH for the UE. It can be synchronized to the serving base station, which improves the accuracy of time-frequency synchronization and improves the demodulation performance. DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, a brief description of the drawings to be used in the description of the embodiments will be briefly made. It is obvious that the drawings in the following description are some embodiments of the present invention. It will be apparent to those skilled in the art that other drawings may be obtained from these drawings without the inventive labor.

1 is a schematic flow chart of an embodiment of a method for configuring a pilot signal according to the present invention;

2 is a schematic diagram of time-frequency resources occupied by a CSI-RS sequence according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of time-frequency resources occupied by DMRS and PDSCH according to an embodiment of the present invention; FIG. 4 is a time-frequency occupied by a CSI-RS sequence corresponding to three CSI-RS resources configured by a common station according to an embodiment of the present invention; Resource diagram

5 is a schematic diagram of location information corresponding to two CSI-RS resources of a co-located station in two adjacent subframes according to an embodiment of the present invention;

6 is a schematic flow chart of another embodiment of a method for configuring a pilot signal according to the present invention;

Figure 7 is a schematic diagram of the system corresponding to Figure 6;

8 is a schematic flowchart of another embodiment of a method for configuring a pilot signal according to the present invention;

9 is a schematic flowchart diagram of another embodiment of a method for configuring a pilot signal according to the present invention;

10 is a schematic structural diagram of an embodiment of a serving base station according to the present invention;

11 is a schematic structural diagram of another embodiment of a serving base station according to the present invention;

12 is a schematic structural diagram of a UE according to an embodiment of the present invention;

13 is a schematic structural diagram of another embodiment of a UE according to the present invention;

twenty four 14 is a schematic structural diagram of an embodiment of a serving base station according to the present invention;

15 is a schematic structural diagram of another embodiment of a serving base station according to the present invention;

16 is a schematic structural diagram of a UE according to an embodiment of the present invention;

FIG. 17 is a schematic structural diagram of another embodiment of a UE according to the present invention. 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. The embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In the CoMP scenario, since the CRS sequence received by the UE is from the macro base station or the superimposed sequence, when the serving base station of the UE is R H , time-frequency synchronization using the CRS sequence is not suitable. To this end, in the embodiment of the present invention, the first mode is that the service base station configures at least two CSI-RS resources (CSI-RS Resource) of the shared station for the UE, and the second mode is that the serving base station configures the UE not for the UE. DMRS resources that are simultaneously transmitted by the PDSCH. Optionally, the UE may perform time-frequency synchronization according to at least two CSI-RS resources of the shared station or DMRS resources that are not simultaneously sent by the PDSCH. For details, please refer to the subsequent embodiments.

The two pilot resource co-locations in the embodiment of the present invention mean that different pilot resources and their corresponding pilot sequences are configured and transmitted by the same serving base station. Alternatively, the UE may infer the large-scale characteristics of another pilot signal of the received co-site from the received large-scale properties of a pilot signal. Large-scale features include some or all of the following: Delay spread, Doppler spread, Frequency shift, Average received power, Receive timing ( Received Timing ).

The serving base station in the embodiment of the present invention may be a base station (NodeB, NB), an evolved base station (eNB, evolved NodeB), a macro base station (Macro eNB), a radio head (RRH), and a pico Various stations capable of providing wireless services to the UE, such as a base station (Pico eNodeB), a home base station (Home eNB), or an LTE Hotspot and Indoor Enhancements (LTE-Hi) small base station.

25 FIG. 1 is a schematic flowchart of a method for configuring a pilot signal according to an embodiment of the present invention, including: Step 11: A serving base station configures at least two CSI-RS resources for one UE, and notifies the UE of the at least two CSIs. RS resources are configured by the serving base station;

After configuring the CSI-RS resource for the UE, the monthly service base station may send a CSI-RS sequence according to the CSI-RS resource, and the UE may perform time-frequency synchronization according to the CSI-RS sequence.

In the embodiment of the present invention, the at least two CSI-RS resources are configured by the serving base station, and the at least two CSI-RS resources may be called a co-site.

In the embodiment of the present invention, each CSI-RS resource includes at least five CSI-RS resource parameters as follows:

Antenna port configuration information (antennaPortsCount-rll): Indicates the port information of the configured CSI-RS. It can be configured with 1 antenna port, 2 antenna port, 4 antenna port or 8 antenna port. Time-frequency resource location information (resourceConfig-rll) ): mainly indicating the time-frequency resource location information of the CSI-RS in one RB;

Subframe configuration information (subframeConfig-rll): mainly indicates the period of the CSI-RS and its time domain resource location information in one period;

Power information ( -C-rll ): Pc information indicating the CSI-RS.

Initialization parameter (X-rl l ): It is mainly used to calculate the initialization parameters of the pseudo-random sequence generator generated by the CSI-RS sequence, and the range is [0, 503].

In the frequency domain, the transmission bandwidth of the CSI-RS is consistent with the bandwidth of the serving cell, and no additional definition or signaling is required.

It can be understood that, in this embodiment, the name indicating the parameters included in the CSI-RS resource may also be other names indicating the same function.

In the embodiment of the present invention, at least two CSI-RS resources of the shared station (that is, configured by the same serving base station) may be specifically non-zero power CSI-RS resources (Non zero power CSI-RS Resource, NZP CSI-RS Resource) ).

Step 12: The serving base station sends a DMRS to the UE, and notifies the UE that the DMRS is configured by the serving base station.

The DMRS in this embodiment is sent in a subframe simultaneously with the PDSCH, where the PDSCH is a PDSCH scheduled by the serving base station to the UE, and the UE demodulates the PDSCH according to the DMRS.

26 In the embodiment of the present invention, the DMRS is configured by the serving base station, and may also be referred to as the DMRS and the at least two CSI-RS resources are co-located.

Since the DMRS and the PDSCH are also co-station, when the DMRS is co-located with the at least two CSI-RS resources, it indicates that the PDSCH is co-located with the at least two CSI-RS resources, and the UE uses the at least two. When the CSI-RS resources are time-frequency synchronized, they can be synchronized to the site sent to their PDSCH to ensure demodulation performance.

In LTE/LTE-A, one antenna port corresponds to a Resource Grid, and the basic unit in a resource cell is called a Resource Element (RE), and each RE can be used uniquely (k, l) indicates that k represents the sequence number of the frequency domain subcarrier, and 1 represents the sequence number of the i or Orthogonal Frequency Division Multiple (OFDM) symbol within one subframe. The size of a physical resource block (PRB) is 14 consecutive OFDM symbols in the time domain and 12 consecutive subcarriers in the frequency domain. As shown in Figure 2, it is a schematic diagram of the RE that can be occupied by a CSI-RS sequence transmitted by CSI-RS resources on each antenna port in one PRB when 1 antenna or 2 antenna ports are configured.

When configuring one antenna port, one CSI-RS resource is sent on the two REs in the corresponding CSI-RS sequence in each PRB on the antenna port Port 15, corresponding to a group of frequency domains in the same time domain adjacent (0, 1) . When two antenna ports are configured, one CSI-RS resource is transmitted on the same two REs in each PRB on the antenna ports Port 15 and Port 16, and the corresponding time domain is adjacent to the same frequency domain. (0,1), the CSI-RS sequences transmitted on the 2 antenna ports are multiplexed in CDM mode. Referring to FIG. 2, for a 2-port scenario, there are 20 possibilities for the time-frequency resource location that can be occupied by the CSI-RS sequence corresponding to each CSI-RS resource. When configuring a 4-antenna port, a CSI-RS resource occupies a set of tags marked as frequency i or the same as i or adjacent (0,1) in the CDM multiplexing mode on the antenna ports Port 15 and Port 16, at the antenna port. Port 17 and Port 18 occupy a set of (2, 3) tags that are adjacent to the same time domain in the frequency domain in CDM multiplexing. When configuring an 8-antenna port, a CSI-RS resource occupies a set of (0,1) adjacent to the same time domain in the frequency domain on the antenna ports Port 15 and Port 16 in CDM multiplexing, at the antenna port Port 17 On the Port 18, the CDM multiplexes a group of (2,3) adjacent to the same time domain in the frequency domain, and uses CDM multiplexing on the antenna ports Port 19 and Port 20 to occupy a set of tags. i or the same i or adjacent (4,5), occupying a set of marks as frequency i or the same i or adjacent (6,7) in the CDM multiplexing manner on the antenna ports Port 21 and Port 22. .

In the prior art, in a scenario where the eNB configures a 2-antenna port CSI-RS resource, the eNB

27 One of the 20 possible locations described above is selected, and the CSI-RS sequence is transmitted at the selected location. In this embodiment, for a UE, the same site is configured with at least two CSI-RS resources, and the corresponding CSI-RS sequence may be sent according to the configured at least two CSI-RS resources, for example, FIG. 2 The time-frequency resource used in the padding indicates the time-frequency resource occupied by the CSI-RS sequence corresponding to the two CSI-RS resources of the same UE, and the site sends the corresponding CSI on the configured time-frequency resource. The RS sequence is given to the UE, and then the UE can perform time-frequency synchronization according to the received CSI-RS sequences corresponding to the two CSI-RS resources.

When transmitting the PDSCH to the UE, the monthly service base station simultaneously transmits the DMRS, and the UE demodulates the received PDSCH according to the DMRS. As shown in FIG. 3, the time-frequency resources occupied by the DMRS and the PDSCH are respectively represented by different filling manners. It can be understood that if the CSI-RS sequence shown in FIG. 2 is not used for transmitting the CSI at the possible time-frequency position, The -RS is also used to transmit the PDSCH. Figure 3 is an example of transmitting a CSI-RS sequence at the padding position shown in Figure 2, and the remaining possible locations will be used to transmit the PDSCH.

In this embodiment, the network side will indicate the CSI-RS resource that is co-located with the DMRS. In this embodiment, since the DMRS and the PDSCH are sent together, the station that sends the DMRS is the serving base station of the UE, and the UE needs to synchronize to the The serving base station, therefore, when the CSI-RS and the DMRS are from the same site, it indicates that the CSI-RS is also from the serving base station, and the CSI-RS can be used for time-frequency synchronization and can be synchronized to the serving base station.

In addition, since the at least two CSI-RS resources are from the same base station, the serving base station only needs to indicate that at least one of the CSI-RS resources and the DMRS are from the same site, and the at least two CSI-RS resources are determined to be from the same one. The base station is served, and the indication bit overhead can be reduced when only one is indicated.

Optionally, the foregoing at least two CSI-RS resources are sent by the same eNB, sent by the same Macro, sent by the same RRH, sent by the same Pico, sent by the same Home eNB, or the same LTE. -Hi sent by the small base station.

Optionally, at least two CSI-RS resources of the at least two CSI-RS resources are mapped to different Orthogonal Frequency Division Multiple (OFDM) symbols. For example, referring to FIG. 4, the serving base station configures three CSI-RS resources for the same UE, and indicates the time-frequency resource positions occupied by the CSI-RS sequences indicated by the three CSI-RS resources in a padding manner, from FIG. 4 It can be seen that these time-frequency resource locations are located on different OFDM symbols, that is, three

28 The CSI-RS resources are mapped to different OFDM symbols, respectively.

Since the time domain interval between different CSI-RS resources affects the accuracy of the frequency offset estimation, the larger the time domain interval is, the higher the accuracy is. Therefore, by separating the above CSI-RS resources in the time domain, the frequency offset can be improved. The accuracy of the estimation, in turn, meets the requirements for frequency synchronization tracking.

Optionally, the subframes indicated by the subframe configuration information included in the at least two CSI-RS resources are the same subframe, or two subframes. For example, the CSI-RS resource shown in FIG. 2 or FIG. 4 is an indication. The same subframe, or, referring to FIG. 5, taking two CSI-RS resources and indicating two adjacent subframes as an example, the subframe indicated by the subframe configuration information included in each of the CSI-RS resources may also belong to the phase. Two sub-frames of the neighbor.

Optionally, if multiple serving base stations configure pilot signals for the same UE, each serving base station may be processed in a manner similar to the foregoing R H. For example, the eNB also processes according to the foregoing RRH processing manner.

Optionally, when multiple serving base stations schedule PDSCH for the same UE, DCI signaling or RRC signaling may indicate which CSI-RS resources are co-located with which DMRS.

Correspondingly, the UE side can perform the following steps:

One UE learns at least two CSI-RS resources configured by one serving base station, and the at least two CSI-RS resources are configured by the serving base station;

The UE receives the DMRS sent by the serving base station, and learns that the DMRS is configured by the serving base station.

In this embodiment, the same serving base station configures at least two CSI-RS resources for the same UE, and notifies the UE that the DMRS is also configured by the serving base station, so that the UE can synchronize to the accurate site according to the time and frequency of the at least two CSI-RS resources. Improve the accuracy of time-frequency synchronization and improve demodulation performance.

6 is a schematic flowchart of another embodiment of a method for configuring a pilot signal according to the present invention. FIG. 7 is a schematic diagram of a system corresponding to FIG. 6, and FIG. 7 is an example of a CoMP scenario composed of an eNB and an RRH. In this embodiment, the service base station is taken as an example of R H . This embodiment includes:

Step 61: The R H sends the RRC signaling to the UE, where the RRC signaling includes at least two CSI-RS resources to indicate that the at least two CSI-RS resources are co-located.

For the notification of CSI-RS resources, the CSI-RS configuration information element of the radio resource control information elements of the RRC signaling may be used.

29 The CSI-RS resources are configured in the CSI-RS-Config information elements, and each CSI-RS resource includes at least the following five CSI-RS resource parameters:

Power information ( -C-rl 1 ): Pc information indicating the CSI-RS.

In the embodiment of the present invention, at least two CSI-RS resources of the shared station may be specifically a non-zero power CSI-RS Resource (NZP CSI-RS Resource).

The UE may be notified of the CSI-RS resources of the co-station in the following manner:

Optionally, the first RRC signaling is sent to the UE, where the first RRC signaling includes:

a CSI-RS configuration information unit, where the CSI-RS configuration information unit includes the at least two CSI-RS resources, so that the UE determines the CSI-RS resources included in the first RRC signaling to be Configured by the serving base station;

For example, at least two CSI-RS resources configured are represented as CSI-RS resources ~ 1 and CSI-RS resources ~ 2, and CSI-RS resources ~ 1 include information of antennaPortsCoimt-rll~l, resourceConfig-rll~l , subframeConfig-rll~l, pC-rl 1~1 and X-rl 1-1, and CSI-RS resources ~ 2 include information for antennaPortsCoimt-rll~2, resourceConfig-rl l~2, subframeConfig-rll~2 , pC-rl 1-2 and X-rll~2, may include antennaPortsCount-rll~l, resourceConfig-rll~l, subframeConfig-rll~l, pC-rl 1~1 and in the CSI-RS configuration information element. X-rl 1~1, and antennaPortsCount-rll~2

30 resourceConfig-rll~2, subframeConfig-rll~2, pC-rll~2 and X-rll~2. After the UE receives the RRC signaling including the CSI-RS configuration information element, it can be determined that the CSI-RS resource 〜1 and the CSI-RS resource 〜2 are co-located.

Or,

At least two CSI-RS configuration information units, each of the at least two CSI-RS configuration information units including one CSI-RS resource of the at least two CSI-RS resources, and An indication information, and the first indication information in the at least two CSI-RS configuration information units is the same, so that the UE, according to the same first indication information, the at least two CSIs The RS resource is determined to be configured by the serving base station;

For example, the two CSI-RS resources configured as described above may include two CSI-RS configuration information units in the RRC signaling, and one CSI-RS configuration information unit includes antennaPortsCount-rll~l and resourceConfig-rll~l. , subframeConfig-rll~l, pC-rll~l and X-rll~l, and co-site indication information~1, and another CSI-RS configuration information element includes antennaPortsCount-rl 1~2, resourceConfig-rl 1~2. The subframeConfig-rl 1 to 2, the pC-rll 〜2 and the X-rll 〜2, and the co-site indication information 〜2, wherein the co-site indication information ～1 and the co-site indication information ～2 are the same, for example, all are 1. The value of the common station indication information may be 0, 1, 2, or 3. When it is 0, it indicates that there are no multiple CSI-RS resources of the co-station, and the common station indication information corresponding to the at least two CSI-RS resources is the same. And when the common station indication information is not 0, it indicates that these CSI-RS resources are co-located.

Or,

Taking the two CSI-RS resources configured as above as an example, one of the RRC signaling may be included.

31 CSI-RS configuration information element, which includes antennaPortsCount-rll~l, resourceConfig-rll~l, subframeConfig-rll~l, pC-rl 1-1 and X-rl 1~1, and a pairing Instructing information, taking the 2 antenna port as an example, after determining one CSI-RS resource, the time-frequency resource location information included in one PRB of another CSI-RS resource and the determined one CSI-RS resource are included in one PRB. The time-frequency resource location information has eight preferred configurations when considering the time-frequency synchronization 3 trace performance of the UE, and then can be represented by 3-bit pairing indication information, for example, determining a CSI-RS resource in a PRB. The time-frequency resource location information included in the representation is represented by ( ;=11, /; = 2 ) , _3⁄4 =1, where, represents the information of the subcarrier in the time-frequency resource location information of the CSI-RS resource included in one PRB. , =0, 1, 2, 11; /; indicates information of the OFDM symbol in the time-frequency resource location information of the CSI-RS resource included in one slot of a PRB, /; =0, 1, 2, ..., 6; _¾ = 0,1 represent slot 1 or slot 0, it can indicate the time-frequency resource 000 bits (= 2, /; = 5 ), n sl = 0, the resource location (k [=, l [= 5) when the frequency indicated by 001, n _sl = 0, indicative of the rest position may preclude a similar manner. For another example,

Assume (k'), indicating the time-frequency resource location information of a CSI-RS resource in a PRB, /; =5 , n _sl

), ₂ can be

When /; = 2,n _{s 2} = 1, k ₂ ' = (^-2), (^-1) ;, (^; + l), (k: + 2);

When ≠ n _{s 1} , k ₂ ' =

+ 1).

When considering the time-frequency synchronization tracking performance of the UE, the second location information has the above eight possibilities. Therefore, the second location information can be indicated by the 3-bit pairing indication information. Therefore, under the above conditions, only Three bits can indicate two CSI-RS resources of the co-site.

Step 62: The RH sends the DMRS and the PDSCH to the UE, and sends downlink control information (Downlink Control Information, DCI) signaling or RRC signaling to the UE, where the DCI signaling or the RRC signaling includes indication information, where the indication information is used. And indicating that at least one CSI-RS resource and the DMRS of the at least two CSI-RS resources are co-station, to notify the UE that the DMRS and the at least two CSI-RS resources are co-located.

The RRC signaling in this step may be the same RRC signaling as the RRC signaling in step 61, or may be different RRC signaling.

That is, optional,

Notifying that the DMRS is configured by the serving base station by using the first DCI signaling to send the downlink control information to the UE, where the first DCI signaling includes second indication information, where

32 The second indication information is used to indicate that at least one CSI-RS resource of the DMRS and the at least two CSI-RS resources is configured by the serving base station, to notify the UE of the DMRS and the at least Two CSI-RS resources are configured by the serving base station; or

Since these CSI-RS resources are co-located, when the DMRS is instructed to co-station with at least one of the CSI-RS resources, it can be determined that the CSI-RS resources and the DMRS are co-located.

In this embodiment, the CSI-RS resources of the co-station are sent and indicated by the RRC signaling, and the DMRS and CSI-RS resources of the co-station are transmitted and indicated by the DCI signaling or the RRC signaling, and may be performed according to the CSI-RS resources of the co-station. Time-frequency synchronization for improved synchronization accuracy.

FIG. 8 is a schematic flowchart of another embodiment of a method for configuring a pilot signal according to the present invention. In this embodiment, the R H is used as a serving base station, and the embodiment includes:

Step 81: The RH sends the RRC signaling to the UE, where the RRC signaling includes the first CSI-RS resource, and sends DCI signaling to the UE, where the DCI signaling includes at least one pairing information, and each pairing information is used. And indicating time-frequency resource location information of the second CSI-RS resource relative to the first CSI-RS resource in one PRB, or, when the second second pairing information is used to indicate the second CSI-RS resource Frequency resource location information, the first CSI-RS resource is the at least two

33 Any one of the CSI-RS resources, where the second CSI-RS resource is any one of the at least two CSI-RS resources different from the first CSI-RS resource And the first CSI-RS resource and the second CSI-RS resource share other CSI-RS resource parameters except the time-frequency resource location information.

Power information ( -C-rll ): Pc information indicating the CSI-RS.

As described above, one CSI-RS resource may be indicated by a CSI-RS configuration information element in one RRC signaling, and at least another CSI-RS resource paired with the RRC configured CSI-RS resource may be indicated by DCI signaling. Implementing multiple CSI-RS resources for the UE.

Different from the previous embodiment, this embodiment indicates which CSI-RS resources are co-station by DCI signaling.

Take the configuration of two CSI-RS resources and use 2-port antenna transmission as an example.

The time-frequency resource location information included in the CSI-RS resources of two identical RBs can be represented by (k\,l\), and ( ), , ₂ respectively, where and ; respectively represent a CSI-RS resource in one Information about subcarriers in the time-frequency resource location information included in the PRB, 0; = 0, 1, 2...11; /;

34 /; respectively, the information of the OFDM symbol in the time-frequency resource location information included in one CSI-RS resource in one time slot of a PRB, /;, /; = 0,1,2,...,6; 0, 1 represents slot 0 or slot 1, respectively.

The time-frequency resource location information included in a PRB of a CSI-RS resource may be indicated by resourceConfig-rll in the CSI-RS configuration information element. Specifically, it may be represented by ( , /;) , ₁ .

After determining the first location information in the above manner, the second location information can be indicated by 3 bits, for example,

Assume ( ), indicating the time-frequency resource location information of a CSI-RS resource in a PRB, /; =5 , n _sl =0, , = 2, 3, 8, or 9; then, ₂ can be

When /; = 2,n _{s 2} = 1, k ₂ ' = (^-2), (^-1) ;, (^; + l), (k: + 2);

When i ≠ ⁿ _s , 2, ^k ₂ ' = (^-1) ', (^ +!).

When considering the time-frequency synchronization tracking performance of the UE, the second location information has the above eight possibilities. Therefore, the second location information can be indicated by three bits. Therefore, under the above conditions, only three bits are needed. Indicates two CSI-RS resources for the co-site.

Step 82: The RH sends a DMRS to the UE in the same subframe as the DCI signaling, so that the UE sends the at least two CSI-RS resources of the co-station indicated by the DCI signaling. The DMRS transmitted in the same subframe is determined to be co-located.

Different from the foregoing embodiment, in the previous embodiment, the DMRS and the CSI-RS resources are also required to be co-located. In this embodiment, the UE may configure the DMRS and CSI-RS in the same sub-frame by default. At least two CSI-RS resources indicated by the information unit and the DCI signaling joint are determined to be co-located.

In particular, if multiple serving base stations configure pilot signals for the same UE, each serving base station can be processed in a manner similar to the foregoing RH. In this case, DCI signaling or RRC signaling is required to indicate DMRS and The CSI-RS resources indicated by the CSI-RS configuration information unit are co-located, thereby obtaining a DMRS co-station with at least two CSI-RS resources.

In this embodiment, the CSI-RS resource of the co-station is jointly indicated by the RRC signaling and the DCI signaling, so that the UE can determine that the CSI-RS resources indicated by the DMRS and the DCI signaling in the same sub-frame are co-station. The station's CSI-RS resources are synchronized to improve synchronization accuracy.

Optionally, if multiple serving base stations configure pilot signals for the same UE, each service base

35 The station can be processed in a manner similar to the above RH. For example, the eNB also performs processing according to the above-mentioned RRH processing manner.

FIG. 9 is a schematic flowchart of another embodiment of a method for configuring a pilot signal according to the present invention, including: Step 91: A serving base station sends first DCI signaling to a first UE, where the first DCI signaling includes first indication information, The first indication information is used to indicate that the PDSCH is not sent when the first DMRS is sent;

Step 92: The serving base station sends a first DMRS to the first UE and does not send a PDSCH. Optionally, the first DCI signaling is sent by the serving base station after detecting the first UE access; or

The first DCI signaling is sent by the serving base station after receiving the uplink signaling sent by the first UE, that is, triggered by the first UE.

Optionally, after the first DCI signaling is sent, the first DMRS is periodically sent and the PDSCH is not sent; or, the first DCI signaling is sent once, and the first The DMRS does not transmit the PDSCH.

The first DCI signaling may include one-bit indication information. For example, when the 1-bit indication information is "1" or "0", respectively, it indicates that only the DMRS is transmitted, the PDSCH is not sent at the same time, or the DMRS is sent simultaneously. PDSCH.

In the embodiment of the present invention, the simultaneous transmission of the DMRS and the PDSCH means that the two are transmitted at different locations of the same PRB, and when the two are not transmitted, the PDSCH is not transmitted in the PRB that sends the DMRS.

Optionally, the method may further include: the serving base station sending a second DMRS to the second UE on the time-frequency resource corresponding to the first DMRS, and sending, by the serving base station, the second UE The second PDSCH corresponding to the second DMRS. For example, referring to FIG. 3, at a time-frequency location occupied by the DMRS, the first DMRS is sent to the first UE, and the second DMRS is sent to the second UE, and at the time-frequency position corresponding to the PDSCH, to the second UE. The second PDSCH is transmitted.

Optionally, the method may further include: the serving base station sending, to the first UE, a third PDSCH and a third DMRS corresponding to the third PDSCH, so that the first UE is configured according to the third DMRS The third PDSCH is adjusted. For example, the serving base station only sends out in the first PRB.

36 The DMRS is sent without transmitting the PDSCH, and both the DMRS and the PDSCH are transmitted in the second PRB.

When decoding the DMRS, the UE needs to generate a DMRS sequence by using a pseudo-random sequence generator, and the calculation of the initialization parameter of the pseudo-random sequence generator is related to a virtual cell ID parameter configured by the serving base station, which is assumed to be The virtual cell number parameter is denoted by Y. Then, the same serving base station may send the same MME with the DMRS sent by the PDSCH and the DMRS corresponding to the DMRS sent by the PDSCH at the same time, that is,

Optionally, before the serving base station sends the first DMRS to the first UE and does not send the PDSCH, or the serving base station sends the first DMRS to the first UE and does not send the In the PDSCH, the method further includes: sending, to the first UE, a first virtual cell number parameter for generating the first DMRS;

The first virtual cell number parameter and the second virtual cell number parameter are the same, and the UE learns the first DMRS and the location according to the same first virtual cell number parameter and the second cell virtual number parameter. The third DMRS is configured by the serving base station.

If the same serving base station does not transmit the DMRS sent by the PDSCH and the Y corresponding to the DMRS sent by the PDSCH at the same time, the DMRS and the DMRS that are not simultaneously transmitted with the PDSCH may be indicated in the DCI signaling. Co-site information with the DMRS sent by the PDSCH.

That is, the serving base station sends radio resource control RRC signaling to the first UE, where the RRC signaling includes second indication information, where the second indication information is used to indicate the first DMRS and the The third DMRS is configured by the serving base station, so that the UE learns, according to the second indication information, that the first DMRS and the third DMRS are configured by the serving base station; or

The first DCI signaling further includes second indication information, where the second indication information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station, so that the UE is configured according to the Determining, by the second indication information, that the first DMRS and the third DMRS are configured by the serving base station; or

37 The serving base station sends a second DCI signaling to the first UE, where the second DCI signaling includes second indication information, where the second indication information is used to indicate the first DMRS and the third The DMRS is configured by the serving base station, so that the UE learns, according to the second indication information, that the first DMRS and the third DMRS are configured by the serving base station.

Optionally, when multiple serving base stations serve the same UE, and each serving base station is timed, the following manners may be used to indicate which DMRSs (abbreviated as DMRS-1) that are different from the PDSCH are simultaneously The DMRS (abbreviated as DMRS-2) sent by the PDSCH is co-located:

Manner 1: Each serving base station configures the same virtual cell number parameter Y for the DMRS-1 and DMRS-2 transmitted by itself, and the Ys configured by different serving base stations are different. Therefore, the UE can determine which DMRS-1 and which DMRS according to Y. — 2 is co-located; or,

Manner 2: Each serving base station includes indication information in DCI signaling or RRC signaling sent to the UE, where the indication information is used to indicate which DMRS-1 and which DMRS-2 are co-located. For example, when transmitting the DCI signaling, the serving base station includes not only the indication information for indicating DMRS-1 (the DMRS not transmitted with the PDSCH at the same time) but also the indication for indicating the DMRS-2 shared with the DMRS-1. information.

Correspondingly, the UE side can perform the following steps:

The UE receives the first DCI signaling sent by the serving base station, where the first DCI signaling includes first indication information, where the first indication information is used to indicate that the PDSCH is not sent when the first DMRS is sent within the set time;

Receiving, by the UE, the first DMRS sent by the serving base station in the set time, where the first DMRS is not sent when the PDSCH is different from the PDSCH.

In this embodiment, by transmitting the DMRS sent by the UE to the UE at different times, the UE can perform time-frequency synchronization according to the DMRS, so that the UE can ensure that the UE time-frequency is synchronized to the serving base station, and the accuracy of the time-frequency synchronization is improved, thereby improving the demodulation. performance.

10 is a schematic structural diagram of an embodiment of a serving base station according to the present invention. The serving base station 100 includes a configuration module 101 and a sending module 102. The configuration module 101 configures at least two channel state information reference signal CSI-RS resources for one user equipment UE; The module 102 is configured to notify the UE that the at least two CSI-RS resources are configured by the serving base station; and send a demodulation parameter to the UE.

38 The signal DMRS is tested, and the DMRS of the UE is notified to be configured by the serving base station.

Optional,

The subframe indicated by the subframe configuration information included in the at least two CSI-RS resources is one subframe, or two subframes; or

At least two CSI-RS resources of the at least two CSI-RS resources configured by the configuration module are mapped to different orthogonal frequency division multiplexing OFDM symbols.

Optional,

The sending module is specifically configured to notify the UE that the at least two CSI-RS resources configured by the configuration module are configured by the serving base station as follows:

Optional,

39 The sending module is configured to send a demodulation reference signal DMRS to the UE, and notify the UE that the DMRS is configured by the serving base station: a second sending module, configured to pass to the UE Transmitting, by the first downlink control information, the DCI signaling, that the DMRS is configured by the serving base station, where the first DCI signaling includes second indication information, where the second indication information is used to indicate At least one of the DMRS and the at least two CSI-RS resources is configured by the serving base station to notify the UE that the DMRS and the at least two CSI-RS resources are Configuring the serving base station; or

Optional,

The sending module is specifically configured to notify the UE that the at least two CSI-RS resources configured by the configuration module are configured by the serving base station, and send RRC signaling to the UE, where The first RRC signaling includes a first CSI-RS resource, where the first CSI-RS resource is any one of the at least two CSI-RS resources;

Transmitting, by the UE, second downlink control information DCI signaling, where the second DCI signaling includes at least one second pairing information, where each second pairing information in the at least one second pairing information is used to indicate The time-frequency resource location information of the second CSI-RS resource relative to the first CSI-RS resource in a physical resource block PRB, or the second second pairing information is used to indicate the second CSI-RS The time-frequency resource location information of the resource, where the second CSI-RS resource is any one of the at least two CSI-RS resources different from the first CSI-RS resource, so that the UE Determining, by the first CSI-RS resource and the second CSI-RS resource indicated by the second pairing information, that the first CSI-RS resource and the first CSI-RS resource are configured by the serving base station

40 The second CSI-RS resource shares other CSI-RS resource parameters except the time-frequency resource location information.

Optional,

The sending module is specifically configured to send a demodulation reference signal DMRS to the UE in the following manner, and notify the UE that the DMRS is configured by the serving base station: in the same sub-ID as the second DCI signaling Sending, in the frame, the DMRS to the UE, so that the UE, the at least two CSI-RS resources indicated by the second DCI signaling, and the DMRS sent in the subframe are The service base station is configured.

In this embodiment, by configuring at least two CSI-RS resources for the same UE, and instructing the UE that the at least two CSI-RS resources and the DMRS are from the same site, the UE may enable the UE to use the at least two CSI-RS resources. Time-frequency synchronization to an accurate site improves the accuracy of time-frequency synchronization and improves demodulation performance.

FIG. 11 is a schematic structural diagram of another embodiment of a serving base station according to the present invention. The serving base station 110 includes a first sending module 111 and a second sending module 112. The first sending module 111 is configured to send a first downlink to the first user equipment UE. Controlling the DCI signaling, the first DCI signaling includes first indication information, where the first indication information is used to indicate that the physical downlink shared channel PDSCH is not sent when the first demodulation reference signal DMRS is sent; The 112 is configured to send the first DMRS to the first UE and not send the PDSCH.

Optional,

The first sending module is specifically configured to:

Optional,

The second sending module is specifically configured to:

Optional, the serving base station

Also includes:

41 a third sending module, configured to send a second DMRS to the second UE on the time-frequency resource corresponding to the first DMRS, and the serving base station sends the second PDSCH corresponding to the second DMRS to the second UE .

Optional, the serving base station

Also includes:

Optional, the serving base station

Also includes:

Optionally, the first DCI signaling further includes second indication information, where the second indication information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station, so that The UE is configured to learn, according to the second indication information, that the first DMRS and the third DMRS are configured by the serving base station; or the serving base station further includes:

In this embodiment, by transmitting, to the UE, the DMRS that is sent from the PDSCH at different times, the UE can perform time-frequency synchronization according to the DMRS, and can ensure that the UE time-frequency synchronization to the serving base station improves.

42 The accuracy of time-frequency synchronization improves the demodulation performance.

FIG. 12 is a schematic structural diagram of a UE according to an embodiment of the present invention. The UE 120 includes a first learning module 121 and a second learning module 122. The first learning module 121 is configured to learn at least two channel state information reference signals CSI configured by one serving base station. - the RS resource, and the at least two CSI-RS resources are configured by the serving base station; the second learning module 122 is configured to receive the demodulation reference signal DMRS sent by the serving base station, and learn that the DMRS is Configured by the serving base station.

Optional,

The first learning module is specifically configured to:

Optional,

The second learning module is specifically configured to:

43 And receiving the first downlink control information DCI signaling sent by the serving base station, where the first DCI signaling includes second indication information, where the second indication information is used to indicate the DMRS and the at least two CSIs At least one CSI-RS resource in the RS resource is configured by the serving base station, and according to the first DCI signaling, the DMRS and the at least two CSI-RS resources are configured by the serving base station; or

Optional,

The first learning module is specifically configured to:

Optional,

44 The second learning module is specifically configured to:

FIG. 13 is a schematic structural diagram of another embodiment of a UE according to the present invention. The UE 130 includes a first receiving module 131 and a second receiving module 132. The first receiving module 131 is configured to receive the first downlink control information DCI signaling sent by the serving base station. The first DCI signaling includes first indication information, where the first indication information is used to indicate that the physical downlink shared channel PDSCH is not sent when the first demodulation reference signal DMRS is sent, and the second receiving module 132 is configured to receive the The first DMRS sent by the serving base station is sent when the first DMRS is different from the PDSCH.

Optionally, the UE further includes:

Optionally, the UE further includes: a fifth receiving module, configured to receive radio resource control RRC signaling sent by the serving base station, where the RRC signaling includes second indication information, where the second indication information is used Instructing the first DMRS and the third DMRS to be configured by the serving base station;

45 The information indicating that the first DMRS and the third DMRS are configured by the serving base station; or receiving the second DCI signaling sent by the serving base station, where the second DCI signaling includes the second indication information The second indication information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station; and the UE learns the first DMRS and the third according to the second indication information. The DMRS is configured by the serving base station; or, the first DCI signaling further includes second indication information, where the second indication information is used to indicate that the first DMRS and the third DMRS are the service And configured by the base station, according to the second indication information, that the first DMRS and the third DMRS are configured by the serving base station;

FIG. 14 is a schematic structural diagram of another embodiment of a serving base station according to the present invention. The serving base station 140 includes a processor 141 and a transmitter 142. The processor 141 is configured to configure at least two channel state information reference signals CSI-RS for one user equipment UE. a transmitter 142, configured to send the at least two CSI-RS resources to the UE, and notify the UE that the at least two CSI-RS resources are configured by the serving base station, and to the The UE transmits a demodulation reference signal DMRS, and notifies the UE that the DMRS is configured by the serving base station.

Optional,

The transmitter is specifically configured to:

a CSI-RS configuration information unit, where the CSI-RS configuration information unit includes the at least two CSI-RS resources, so that the UE sends the CSI-RS resources included in the first RRC signaling

46 Determined to be configured by the serving base station; or

Optional,

The transmitter is also specifically used to:

Notifying that the DMRS is configured by the serving base station by sending the second RRC signaling to the UE, where the second RRC signaling includes second indication information, the second indication

47 The information is used to indicate that at least one CSI-RS resource of the DMRS and the at least two CSI-RS resources is configured by the serving base station, to notify the UE of the DMRS and the at least two CSIs The RS resource is configured by the serving base station.

Optional,

The transmitter is specifically configured to:

Transmitting, by the UE, second downlink control information DCI signaling, where the second DCI signaling includes at least one second pairing information, where each second pairing information in the at least one second pairing information is used to indicate The time-frequency resource location information of the second CSI-RS resource relative to the first CSI-RS resource in a physical resource block PRB, or the second second pairing information is used to indicate the second CSI-RS The time-frequency resource location information of the resource, where the second CSI-RS resource is any one of the at least two CSI-RS resources different from the first CSI-RS resource, so that the UE Determining, by the first CSI-RS resource and the second CSI-RS resource indicated by the second pairing information, that the first CSI-RS resource and the second are configured by the serving base station The CSI-RS resource shares other CSI-RS resource parameters except the time-frequency resource location information.

Optional,

The transmitter is also specifically used to:

In this embodiment, the transmitter may be specifically a transceiver, or may be implemented by using an antenna, and the processor may be implemented by using a DSP or an FPGA. The memory, the data bus, the control bus, the address bus, and the like may also be included in this embodiment.

FIG. 15 is a schematic structural diagram of another embodiment of a serving base station according to the present invention, where the serving base station 150 includes

48 The processor 151 is configured to generate the first downlink control information DCI signaling and the first demodulation reference signal DMRS. The transmitter 152 is configured to send the first downlink control information to the first user equipment UE. The DCI signaling, the first DCI signaling includes first indication information, where the first indication information is used to indicate that the physical downlink shared channel PDSCH is not sent when the first demodulation reference signal DMRS is sent.

Optional,

The transmitter is specifically configured to:

Optional,

The transmitter is also specifically used to:

Optional,

The transmitter is also used to:

Optional,

The transmitter is also used to:

Optional,

The transmitter is also used to:

Transmitting, to the first UE, a first virtual cell number parameter for generating the first DMRS; and sending, to the first UE, a second virtual cell number parameter for generating the third DMRS;

49 The first virtual cell number parameter and the second virtual cell number parameter are the same, so that the UE learns the first DMRS according to the same first virtual cell number parameter and the second cell virtual number parameter. The third DMRS is configured by the serving base station.

Optionally, the transmitter is further configured to: send radio resource control RRC signaling to the first UE, where the RRC signaling includes second indication information, where the second indication information is used to indicate the a DMRS and the third DMRS are configured by the serving base station, so that the UE learns, according to the second indication information, that the first DMRS and the third DMRS are configured by the serving base station; or

Sending the second DCI signaling to the first UE, where the second DCI signaling includes second indication information, where the second indication information is used to indicate that the first DMRS and the third DMRS are The serving base station is configured, so that the UE learns, according to the second indication information, that the first DMRS and the third DMRS are configured by the serving base station.

FIG. 16 is a schematic structural diagram of another embodiment of a UE according to the present invention. The UE 160 includes a receiver 161 and a processor 162. The receiver 161 is configured to receive at least two channel state information reference signal CSI-RS resources configured by the same serving base station. And receiving the demodulation reference signal DMRS sent by the serving base station; the processor 162 is configured to learn that the at least two channel state information reference signal CSI-RS resources are configured by the serving base station, and learn that the DMRS is The service base station is configured.

Optional,

The receiver is specifically used for

Receiving, by the serving base station, first radio resource control RRC signaling, where the first

50 The RRC signaling includes:

Optional,

The receiver is specifically configured to receive the first downlink control information DCI signaling sent by the serving base station, where the first DCI signaling includes second indication information, where the second indication information is used to indicate the DMRS and At least one CSI-RS resource of the at least two CSI-RS resources is configured by the serving base station; the processor is specifically configured to learn, according to the first DCI signaling, the DMRS and the at least two a CSI-RS resource is configured by the serving base station;

Or,

The receiver is specifically configured to receive the first RRC signaling sent by the serving base station, where the first RRC signaling includes second indication information, where the second indication information is used to indicate the DMRS and the at least two At least one CSI-RS resource of the CSI-RS resources is configured by the serving base station; the processor is specifically configured to learn, according to the first RRC signaling, the DMRS and the at least two

51 a CSI-RS resource is configured by the serving base station;

Or,

Optional,

The receiver is specifically configured to receive the RRC signaling sent by the serving base station, where the RRC signaling includes a first CSI-RS resource, where the first CSI-RS resource is the at least two CSI- Receiving, by the CSI-RS resource, the second DCI signaling sent by the serving base station, where the second DCI signaling includes at least one second pairing information, the at least one second pairing information Each second pairing information is used to indicate time-frequency resource location information of the second CSI-RS resource relative to the first CSI-RS resource in one physical resource block PRB, or each second pairing information The time-frequency resource location information used to indicate the second CSI-RS resource, where the second CSI-RS resource is different from the first CSI-RS resource in the at least two CSI-RS resources a CSI-RS resource, where the first CSI-RS resource and the second CSI-RS resource share other CSI-RS resource parameters except time-frequency resource location information;

Optional,

The receiver is specifically configured to receive the DMRS sent by the serving base station in a same subframe as the second DCI signaling;

In this embodiment, the receiver may be specifically a transceiver, or may be implemented by using an antenna, and the processor may be implemented by using a DSP or an FPGA. The memory, the data bus, the control bus, the address bus, and the like may also be included in this embodiment.

In this embodiment, by configuring at least two CSI-RS resources for the same UE, and instructing the UE that the at least two CSI-RS resources and the DMRS are from the same site, the UE may be configured according to the

52 Two less CSI-RS resources are time-frequency synchronized to an accurate site, improving the accuracy of time-frequency synchronization, thereby improving demodulation performance.

FIG. 17 is a schematic structural diagram of another embodiment of a UE according to the present invention. The UE 170 includes a receiver 171 and a processor 172. The receiver 171 is configured to receive first downlink control information DCI signaling sent by the serving base station, where the first The DCI signaling includes first indication information, where the first indication information is used to indicate that the physical downlink shared channel PDSCH is not sent when the first demodulation reference signal DMRS is sent; and the first DMRS sent by the serving base station is received. And sending, by the processor 172, the first DCI signaling and the first DMRS.

Optional,

The receiver is further configured to: receive a first virtual cell number parameter that is used by the serving base station to generate the first DMRS, and a second virtual cell number parameter that is used to generate the third DMRS, where The first virtual cell number parameter and the second virtual cell number parameter are the same; the processor is further configured to learn, according to the same first virtual cell number parameter and the second cell virtual number parameter, the first DMRS And the third DMRS is configured by the serving base station. Optionally, the receiver is further configured to: receive radio resource control RRC signaling sent by the serving base station, where the RRC signaling includes second indication information, where the second indication information is used to indicate the a DMRS and the third DMRS are configured by the serving base station; or, the first DCI signaling further includes second indication information, where the second indication information is used to indicate the first DMRS and the The third DMRS is configured by the serving base station; or, the second DCI signaling sent by the serving base station is received, where the second DCI signaling includes second indication information, where the second indication information is used to indicate The first DMRS and the third DMRS are configured by the serving base station;

The processor is further configured to learn, according to the second indication information, that the first DMRS and the third DMRS are configured by the serving base station.

In this embodiment, the receiver may be specifically a transceiver, or may be implemented by using an antenna, and the processor may be implemented by using a DSP or an FPGA. In this embodiment, the memory and the total data may also be included.

53 Line, control bus, address bus, etc.

One of ordinary skill in the art will appreciate that all or a portion of the steps to implement the various method embodiments described above can be accomplished by hardware associated with the program instructions. The aforementioned program can be stored in a computer readable storage medium. The program, when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Finally, it should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting thereof; 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.

54

Claims

Rights request

1. A method for configuring pilot signals, characterized by including:

A serving base station configures at least two channel state information reference signal CSI-RS resources for a user equipment UE, and notifies the UE that the at least two CSI-RS resources are configured by the serving base station;

2. The method according to claim 1, characterized in that,

The subframe indicated by the subframe configuration information included in the at least two CSI-RS resources is one subframe or two subframes; or

Among the at least two CSI-RS resources, at least two CSI-RS resources are mapped to different orthogonal frequency division multiplexing OFDM symbols.

3. The method according to claim 1 or 2, wherein the notifying the UE that the at least two CSI-RS resources are configured by the serving base station includes:

Send first radio resource control RRC signaling to the UE, where the first RRC signaling includes:

A CSI-RS configuration information unit, the CSI-RS configuration information unit includes the at least two CSI-RS resources, so that the UE determines the CSI-RS resources included in the first RRC signaling as yes Configured by the serving base station; or,

At least two CSI-RS configuration information units, each of the at least two CSI-RS configuration information units includes one CSI-RS resource among the at least two CSI-RS resources, and the An indication information, and the first indication information in the at least two CSI-RS configuration information units is the same, so that the UE configures the at least two CSI-RS configuration information according to the same first indication information. The RS resource is determined to be configured by the serving base station; or,

A CSI-RS configuration information unit, the CSI-RS configuration information unit includes a first CSI-RS resource and at least one first pairing information, each first pairing information in the at least one first pairing information is used to indicate The time-frequency resource location information of the second CSI-RS resource within a physical resource block PRB, or each of the first pairing information is used to indicate the timing of the second CSI-RS resource relative to the first CSI-RS resource. frequency resource location information, so that the UE determines the first CSI-RS resource and the second CSI-RS resource indicated by the first pairing information as being provided by the serving base

55 configured by the station, the first CSI-RS resource is any CSI-RS resource among the at least two CSI-RS resources, and the second CSI-RS resource is any one of the at least two CSI-RS resources. Any CSI-RS resource different from the first CSI-RS resource, the first CSI-RS resource and the second CSI-RS resource share other CSI-RS resource parameters except time-frequency resource location information. .

4. The method according to any one of claims 1 to 3, wherein the notifying the UE that the DMRS is configured by the serving base station includes:

Notify the UE that the DMRS is configured by the serving base station by sending first downlink control information DCI signaling to the UE, where the first DCI signaling includes second indication information, and the second The indication information is used to indicate that at least one CSI-RS resource among the DMRS and the at least two CSI-RS resources is configured by the serving base station, so as to notify the UE of the DMRS and the at least two CSI-RS resources. -RS resources are configured by the serving base station; or

The UE is informed that the DMRS is configured by the serving base station by sending first RRC signaling to the UE, where the first RRC signaling includes second indication information, and the second indication information is used to Indicate that the DMRS and at least one of the at least two CSI-RS resources are configured by the serving base station to notify the UE that the DMRS and the at least two CSI-RS resources are configured by the serving base station; or

Notifying the UE that the DMRS is configured by the serving base station by sending second RRC signaling to the UE, wherein the second RRC signaling includes second indication information, and the second indication information is used to Indicate that at least one of the DMRS and the at least two CSI-RS resources is configured by the serving base station to notify the UE of the DMRS and the at least two CSI-RS resources. It is configured by the serving base station.

5. The method according to claim 1 or 2, characterized in that,

Before notifying the UE that the at least two CSI-RS resources are configured by the serving base station, the method further includes: sending RRC signaling to the UE, wherein the RRC signaling includes the A CSI-RS resource, the first CSI-RS resource is any one of the at least two CSI-RS resources;

The notifying the UE that the at least two CSI-RS resources are configured by the serving base station includes: sending second downlink control information DCI signaling to the UE, wherein: in the second DCI signaling Including at least one second pairing information, each of the at least one second pairing information is used to indicate the second CSI-RS resource in one physical resource block PRB relative to the first

56 time-frequency resource location information of the CSI-RS resource, or, each second pairing information is used to indicate the time-frequency resource location information of the second CSI-RS resource, and the second CSI-RS resource is the Any one of at least two CSI-RS resources that is different from the first CSI-RS resource, so that the UE uses the first CSI-RS resource and all the information indicated by the second pairing information. The second CSI-RS resource is determined to be configured by the serving base station, and the first CSI-RS resource and the second CSI-RS resource share other CSI-RS resource parameters except time-frequency resource location information. .

6. The method according to claim 5, characterized in that: sending a demodulation reference signal DMRS to the UE, and notifying the UE that the DMRS is configured by the serving base station, includes:

In the same subframe as the second DCI signaling, send the DMRS to the UE, so that the UE combines the at least two CSI-RS resources indicated by the second DCI signaling with the The DMRS sent in the subframe is configured by the serving base station.

7. A method for configuring pilot signals, characterized by including:

The serving base station sends first downlink control information DCI signaling to the first user equipment UE. The first DCI signaling includes first indication information. The first indication information is used to indicate when sending the first demodulation reference signal DMRS. Do not send the physical downlink shared channel PDSCH at the same time;

The serving base station sends the first DMRS to the first UE without sending the PDSCH.

8. The method according to claim 7, characterized in that said sending the first DCI signaling includes:

After detecting access by the first UE, send the first DCI signaling; or, receive uplink signaling sent by the first UE, and send the first DCI signaling according to the uplink signaling.

9. The method according to claim 7 or 8, characterized in that: sending the first DMRS to the first UE without sending the PDSCH includes:

After each time the first DCI signaling is sent, the first DMRS is periodically sent without sending the PDSCH; or,

Each time the first DCI signaling is sent, the first DMRS is sent once and the PDSCH is not sent.

10. The method according to any one of claims 7-9, characterized in that, the serving base station

57 Sending the first DMRS to the first UE without sending the PDSCH also includes: the serving base station sending the first DMRS to the first UE without sending the PDSCH, where the serving base station The second DMRS is sent to the second UE on the time-frequency resource corresponding to the first DMRS, and at the same time, the serving base station sends the second PDSCH corresponding to the second DMRS to the second UE.

11. The method according to any one of claims 7-10, characterized in that, after the serving base station sends the first DMRS to the first UE without sending the PDSCH, the method further includes:

Send a third PDSCH and a third DMRS sent simultaneously with the third PDSCH to the first UE, so that the first UE demodulates the third PDSCH according to the third DMRS.

12. The method according to claim 11, characterized in that,

Before the serving base station sends the first DMRS to the first UE without sending the PDSCH, or, before the serving base station sends the first DMRS to the first UE without sending the PDSCH, The method further includes: sending a first virtual cell number parameter used to generate the first DMRS to the first UE;

before sending the third PDSCH to the first UE and the third DMRS sent simultaneously with the third PDSCH, or, before sending the third PDSCH to the first UE and sending it simultaneously with the third PDSCH In the third DMRS, the method further includes: sending to the first UE a second virtual cell number parameter used to generate the third DMRS, wherein the first virtual cell number parameter and the second The virtual cell number parameter is the same, so that the UE learns that the first DMRS and the third DMRS are configured by the serving base station according to the same first virtual cell number parameter and the second cell virtual number parameter.

13. The method according to claim 11, characterized in that, before sending the third PDSCH and the third DMRS sent simultaneously with the third PDSCH to the first UE, or sending the third PDSCH to the first UE. PDSCH and a third DMRS sent simultaneously with the third PDSCH, the method further includes: the serving base station sending radio resource control RRC signaling to the first UE, and the RRC signaling includes a second indication information, the second indication information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station, so that the UE can learn the first DMRS and the The third DMRS is configured by the serving base station; or, Before sending the third PDSCH and the third DMRS sent simultaneously with the third PDSCH to the first UE, or during sending the third PDSCH and the third DMRS sent simultaneously with the third PDSCH to the first UE. , the method further includes: the first DCI signaling also includes second indication information, the second indication information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station, So that the UE learns that the first DMRS and the third DMRS are configured by the serving base station according to the second indication information; or, sending the third PDSCH and the third PDSCH to the first UE. Before the third DMRS sent at the same time, or during sending the third PDSCH to the first UE and the third DMRS sent simultaneously with the third PDSCH, the method further includes: the serving base station sends the third PDSCH to the first UE. Send second DCI signaling, the second DCI signaling includes second indication information, the second indication information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station, so that The UE learns that the first DMRS and the third DMRS are configured by the serving base station according to the second indication information.

14. A method for configuring pilot signals, characterized by including:

A user equipment UE learns at least two channel state information reference signal CSI-RS resources configured by a serving base station, and the at least two CSI-RS resources are configured by the serving base station; the UE receives the serving base station The demodulation reference signal DMRS is sent, and it is learned that the DMRS is configured by the serving base station.

15. The method according to claim 14, wherein the UE learns at least two CSI-RS resources configured by the serving base station, and the at least two CSI-RS resources are configured by the serving base station, include:

The UE receives the first radio resource control RRC signaling sent by the serving base station, where the first RRC signaling includes:

At least two CSI-RS configuration information units, each of the at least two CSI-RS configuration information units includes one CSI-RS resource among the at least two CSI-RS resources, and the An indication information, and the first indication information in the at least two CSI-RS configuration information units is the same, so that the UE according to the same first indication information,

59 At least two CSI-RS resources are determined to be configured by the serving base station; or, a CSI-RS configuration information unit, the CSI-RS configuration information unit includes a first CSI-RS resource and at least one first pairing information , each first pairing information in the at least one first pairing information is used to indicate the time-frequency resource location information of the second CSI-RS resource within a physical resource block PRB, or each first pairing information is used Time-frequency resource location information indicating the second CSI-RS resource relative to the first CSI-RS resource, so that the UE uses the first CSI-RS resource and the first pairing information to indicate the first CSI-RS resource. Two CSI-RS resources are determined to be configured by the serving base station, the first CSI-RS resource is any one of the at least two CSI-RS resources, and the second CSI-RS resource is The resource is any one of the at least two CSI-RS resources that is different from the first CSI-RS resource, and the first CSI-RS resource and the second CSI-RS resource share the same time. Other CSI-RS resource parameters besides frequency resource location information.

16. The method according to claim 15, wherein the learning that the DMRS is configured by the base station includes:

Receive first downlink control information DCI signaling sent by the serving base station, where the first DCI signaling includes second indication information, and the second indication information is used to indicate the DMRS and the at least two CSI- At least one CSI-RS resource among the RS resources is configured by the serving base station, and it is learned according to the first DCI signaling that the DMRS and the at least two CSI-RS resources are configured by the serving base station; or

Receive first RRC signaling sent by the serving base station, where the first RRC signaling includes second indication information, and the second indication information is used to indicate at least one of the DMRS and the at least two CSI-RS resources. One CSI-RS resource is configured by the serving base station, and it is learned according to the first RRC signaling that the DMRS and the at least two CSI-RS resources are configured by the serving base station; or

Receive second RRC signaling sent by the serving base station, where the second RRC signaling includes second indication information, and the second indication information is used to indicate at least one of the DMRS and the at least two CSI-RS resources. One CSI-RS resource is configured by the serving base station, and it is learned that the DMRS and the at least two CSI-RS resources are configured by the serving base station according to the second RRC signaling.

17. The method according to claim 14, characterized in that: the at least two channel state information reference signal CSI-RS resources configured by a serving base station are obtained, and the at least two CSI-RS resources are obtained by the Service base station configuration includes:

60 Receive RRC signaling sent by the serving base station, wherein the RRC signaling includes a first CSI-RS resource, and the first CSI-RS resource is any one of the at least two CSI-RS resources. -RS resources;

Receive second DCI signaling sent by the serving base station, wherein the second DCI signaling includes at least one second pairing information, and each second pairing information in the at least one second pairing information is used to indicate Time-frequency resource location information of the second CSI-RS resource relative to the first CSI-RS resource within a physical resource block PRB, or, each second pairing information is used to indicate the second CSI-RS resource time-frequency resource location information, the second CSI-RS resource is any one of the at least two CSI-RS resources that is different from the first CSI-RS resource, and the first CSI-RS resource is - The RS resource and the second CSI-RS resource share other CSI-RS resource parameters except time-frequency resource location information;

18. The method according to claim 17, wherein receiving the DMRS sent by the serving base station and learning that the DMRS is configured by the serving base station includes:

In the same subframe as the second DCI signaling, receive the DMRS sent by the serving base station;

The at least two CSI-RS resources indicated by the second DCI signaling and the DMRS sent in the subframe are determined to be configured by the serving base station.

19. A method for configuring pilot signals, characterized by including:

The user equipment UE receives the first downlink control information DCI signaling sent by the serving base station. The first DCI signaling includes first indication information. The first indication information is used to indicate not to send the first demodulation reference signal DMRS. At the same time, the physical downlink shared channel PDSCH is sent;

The UE receives the first DMRS sent by the serving base station, and the first DMRS and PDSCH are not sent at the same time.

20. The method according to claim 19, further comprising:

The UE receives the third PDSCH sent by the serving base station and the third DMRS sent simultaneously with the third PDSCH;

The UE demodulates the third PDSCH according to the third DMRS.

21. The method according to claim 20, further comprising:

61 The UE receives the first virtual cell number parameter used to generate the first DMRS and the second virtual cell number parameter used to generate the third DMRS sent by the serving base station, and the first virtual cell number The parameter is the same as the second virtual cell number parameter;

The UE learns that the first DMRS and the third DMRS are configured by the serving base station based on the same first virtual cell number parameter and the same second cell virtual number parameter.

22. The method according to claim 20, further comprising: the UE receiving radio resource control RRC signaling sent by the serving base station, the RRC signaling including second indication information, and the third The second indication information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station; the UE learns that the first DMRS and the third DMRS are the configured by the serving base station; or, the first DCI signaling also includes second indication information, the second indication information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station, The UE learns that the first DMRS and the third DMRS are configured by the serving base station according to the second indication information; or,

The UE receives the second DCI signaling sent by the serving base station, the second DCI signaling includes second indication information, and the second indication information is used to indicate the first DMRS and the third DMRS. are configured by the serving base station; and the UE learns that the first DMRS and the third DMRS are configured by the serving base station according to the second indication information.

23. A service base station, characterized by: including:

A configuration module configured to configure at least two channel state information reference signal CSI-RS resources for a user equipment UE;

A sending module, configured to notify the UE that the at least two CSI-RS resources configured by the configuration module are configured by the serving base station; send a demodulation reference signal DMRS to the UE, and notify the UE of the The DMRS is configured by the serving base station.

24. The service base station according to claim 23, characterized in that,

The subframe indicated by the subframe configuration information included in the at least two CSI-RS resources is one subframe, or two subframes, or;

Among the at least two CSI-RS resources configured by the configuration module, at least two CSI-RS resources are mapped to different orthogonal frequency division multiplexing OFDM symbols.

25. The service base station according to claim 23 or 24, characterized in that the transmission mode

62 The block is specifically used to notify the UE in the following manner that the at least two CSI-RS resources configured by the configuration module are configured by the serving base station:

A CSI-RS configuration information unit, the CSI-RS configuration information unit includes a first CSI-RS resource and at least one first pairing information, each first pairing information in the at least one first pairing information is used to indicate The time-frequency resource location information of the second CSI-RS resource within a physical resource block PRB, or each of the first pairing information is used to indicate the timing of the second CSI-RS resource relative to the first CSI-RS resource. frequency resource location information, so that the UE determines that the first CSI-RS resource and the second CSI-RS resource indicated by the first pairing information are configured by the serving base station, and the first The CSI-RS resource is any CSI-RS resource among the at least two CSI-RS resources, and the second CSI-RS resource is the same as the first CSI-RS resource among the at least two CSI-RS resources. Any CSI-RS resource with different resources, the first CSI-RS resource and the second CSI-RS resource share other CSI-RS resource parameters except time-frequency resource location information.

26. The service base station according to claim 25, characterized in that,

The sending module is specifically configured to send the demodulation reference signal DMRS to the UE in the following manner, and notify the UE that the DMRS is configured by the serving base station:

63 The UE is informed that the DMRS is configured by the serving base station by sending first RRC signaling to the UE, where the first RRC signaling includes second indication information, and the second indication information is used to Indicate that the DMRS and at least one of the at least two CSI-RS resources are configured by the serving base station to notify the UE that the DMRS and the at least two CSI-RS resources are configured by the serving base station; or

27. The serving base station according to claim 23 or 24, characterized in that the sending module is specifically configured to notify the UE in the following manner that the at least two CSI-RS resources configured by the configuration module are configured by the The following service base station configuration:

Send RRC signaling to the UE, wherein the RRC signaling includes a first CSI-RS resource, and the first CSI-RS resource is any one of the at least two CSI-RS resources. resource;

Send second downlink control information DCI signaling to the UE, wherein the second DCI signaling includes at least one second pairing information, and each second pairing information in the at least one second pairing information is used to indicate The time-frequency resource location information of the second CSI-RS resource relative to the first CSI-RS resource within one physical resource block PRB, or, each of the second pairing information is used to indicate the second CSI-RS time-frequency resource location information of the resource, and the second CSI-RS resource is any one of the at least two CSI-RS resources that is different from the first CSI-RS resource, so that the UE The first CSI-RS resource and the second CSI-RS resource indicated by the second pairing information are determined to be configured by the serving base station, and the first CSI-RS resource and the second CSI-RS resources share other CSI-RS resource parameters except time-frequency resource location information.

28. The serving base station according to claim 27, wherein the sending module is specifically configured to send a demodulation reference signal DMRS to the UE in the following manner, and notify the UE that the DMRS is provided by the serving base station. Base station configuration:

In the same subframe as the second DCI signaling, send the DMRS to the UE, so that the UE combines the at least two CSI-RS resources indicated by the second DCI signaling with the Shuzi

64 The DMRS sent within the frame is configured by the serving base station.

29. A service base station, characterized by including:

The first sending module is configured to send first downlink control information DCI signaling to the first user equipment UE, where the first DCI signaling includes first indication information, and the first indication information is used to instruct sending of the first solution. When modulating the reference signal DMRS, the physical downlink shared channel PDSCH is not sent at the same time;

The second sending module is configured to send the first DMRS to the first UE without sending the PDSCH.

30. The serving base station according to claim 29, characterized in that the first sending module is specifically used for:

31. The service base station according to claim 29 or 30, characterized in that the second sending module is specifically used for:

32. The serving base station according to any one of claims 29-31, further comprising: a third sending module, configured to send a second message to the second UE on the time-frequency resource corresponding to the first DMRS. DMRS, and at the same time, the serving base station sends the second PDSCH corresponding to the second DMRS to the second UE.

33. The serving base station according to any one of claims 29-32, further comprising: a fourth sending module, configured to send a third PDSCH to the first UE and communicate with the third

The third DMRS is sent simultaneously with the PDSCH, so that the first UE demodulates the third PDSCH according to the third DMRS.

34. The service base station according to claim 33, further comprising:

A fifth sending module, configured to send a first virtual cell number parameter used to generate the first DMRS to the first UE; and, send a second virtual cell number parameter used to generate the third DMRS to the first UE. Virtual cell number parameter, wherein the first virtual cell number parameter and the second virtual cell number parameter are

65 The pseudo cell number parameters are the same, so that the UE learns that the first DMRS and the third DMRS are configured by the serving base station according to the same first virtual cell number parameter and the second virtual cell number parameter.

35. The service base station according to claim 33, characterized in that,

The first DCI signaling also includes second indication information, and the second indication information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station, so that the UE can perform according to the The second indication information learns that the first DMRS and the third DMRS are configured by the serving base station; or, the serving base station further includes:

A sixth sending module, configured to send radio resource control RRC signaling to the first UE, where the RRC signaling includes second indication information, and the second indication information is used to indicate the first DMRS and the The third DMRS is configured by the serving base station, so that the UE learns that the first DMRS and the third DMRS are configured by the serving base station according to the second indication information; or, to the first UE Send second DCI signaling, where the second DCI signaling includes second indication information, where the second indication information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station, so that The UE learns that the first DMRS and the third DMRS are configured by the serving base station according to the second indication information.

36. A user equipment UE, characterized by: including:

The first learning module is configured to learn at least two channel state information reference signal CSI-RS resources configured by a serving base station, and the at least two CSI-RS resources are configured by the serving base station;

The second learning module is configured to receive the demodulation reference signal DMRS sent by the serving base station, and learn that the DMRS is configured by the serving base station.

37. The UE according to claim 36, characterized in that the first learning module is specifically used to:

Receive first radio resource control RRC signaling sent by the serving base station, wherein the first RRC signaling includes:

At least two CSI-RS configuration information units, among the at least two CSI-RS configuration information units Each CSI-RS configuration information unit includes one of the at least two CSI-RS resources and first indication information, and the first of the at least two CSI-RS configuration information units The indication information is the same, so that the UE determines that the at least two CSI-RS resources are configured by the serving base station according to the same first indication information; or,

A CSI-RS configuration information unit, the CSI-RS configuration information unit includes a first CSI-RS resource and at least one first pairing information, each first pairing information in the at least one first pairing information is used to indicate The time-frequency resource location information of the second CSI-RS resource within a physical resource block PRB, or each of the first pairing information is used to indicate the timing of the second CSI-RS resource relative to the first CSI-RS resource. frequency resource location information, so that the UE determines that the first CSI-RS resource and the second CSI-RS resource indicated by the first pairing information are configured by the serving base station, and the first The CSI-RS resource is any one of the at least two CSI-RS resources, and the second CSI-RS resource is the same as the first CSI-RS resource among the at least two CSI-RS resources. Any CSI-RS resource with different resources, the first CSI-RS resource and the second CSI-RS resource share other CSI-RS resource parameters except time-frequency resource location information.

38. The UE according to claim 37, characterized in that the second learning module is specifically used to:

Receive second RRC signaling sent by the serving base station, where the second RRC signaling includes second indication information, and the second indication information is used to indicate at least one of the DMRS and the at least two CSI-RS resources. One CSI-RS resource is configured by the serving base station, and it is learned that the DMRS and the at least two CSI-RS resources are configured by the serving base station according to the second RRC signaling. .

39. The UE according to claim 36, characterized in that the first learning module is specifically used to:

Receive RRC signaling sent by the serving base station, wherein the RRC signaling includes a first CSI-RS resource, and the first CSI-RS resource is any one of the at least two CSI-RS resources. -RS resources;

40. The UE according to claim 39, characterized in that the second learning module is specifically used to:

41. A user equipment UE, characterized by: including:

The first receiving module is configured to receive the first downlink control information DCI signaling sent by the serving base station. The first DCI signaling includes first indication information. The first indication information is used to instruct sending of the first demodulation reference. The signal DMRS is not transmitted at the same time as the physical downlink shared channel PDSCH;

The second receiving module is configured to receive the first DMRS sent by the serving base station, where the first DMRS and PDSCH are not sent at the same time.

42. The UE according to claim 41, further comprising:

A third receiving module, configured to receive the third PDSCH sent by the serving base station and the third DMRS sent simultaneously with the third PDSCH; A demodulation module, configured to demodulate the third PDSCH according to the third DMRS.

43. The UE according to claim 42, further comprising:

The fourth receiving module is configured to receive the first virtual cell number parameter used to generate the first DMRS and the second virtual cell number parameter used to generate the third DMRS sent by the serving base station, the third A virtual cell number parameter is the same as the second virtual cell number parameter; a first determination module is configured to obtain the first DMRS and the second virtual cell number parameter based on the same first virtual cell number parameter and the second virtual cell number parameter. The third DMRS is configured by the serving base station.

44. The UE according to claim 42, further comprising: a fifth receiving module, configured to receive radio resource control RRC signaling sent by the serving base station, where the RRC signaling includes second indication information , the second indication information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station; the UE learns the first DMRS and the third DMRS according to the second indication information. DMRS is configured by the serving base station; or, receive second DCI signaling sent by the serving base station, where the second DCI signaling includes second indication information, and the second indication information is used to indicate the third A DMRS and the third DMRS are configured by the serving base station; the UE learns that the first DMRS and the third DMRS are configured by the serving base station according to the second indication information; or, The first DCI signaling also includes second indication information, the second indication information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station, and the UE performs the operation according to the second indication. The information learns that the first DMRS and the third DMRS are configured by the serving base station; a second determination module is configured to learn, according to the second indication information, that the first DMRS and the third DMRS are the Configured by the service base station.

45. A service base station, characterized by including:

A processor configured to configure at least two channel state information reference signal CSI-RS resources for a user equipment UE;

A transmitter configured to send the at least two CSI-RS resources to the UE, and notify the UE that the at least two CSI-RS resources are configured by the serving base station, and send to the UE Demodulates the reference signal DMRS, and notifies the UE that the DMRS is configured by the serving base station.

46. The service base station according to claim 45, characterized in that: the processor is configured to Among the at least two CSI-RS resources, at least two CSI-RS resources are mapped to different orthogonal frequency division multiplexing OFDM symbols; or,

47. The service base station according to claim 45 or 46, characterized in that the transmitter is specifically used for:

48. The serving base station according to claim 47, characterized in that the transmitter is also specifically used for:

Notifying the UE that the DMRS is configured by the serving base station by sending first downlink control information DCI signaling to the UE, where the first DCI signaling includes second indication information, The second indication information is used to indicate that at least one of the DMRS and the at least two CSI-RS resources is configured by the serving base station, so as to notify the UE of the DMRS and the at least two CSI-RS resources. The two CSI-RS resources are configured by the serving base station; or

49. The service base station according to claim 45 or 46, characterized in that the transmitter is specifically used for:

50. The service base station according to claim 49, characterized in that the transmitter is also specifically used for:

In the same subframe as the second DCI signaling, send the DMRS to the UE, so that

71 It is obtained that the UE determines that the at least two CSI-RS resources indicated by the second DCI signaling and the DMRS sent in the subframe are configured by the serving base station.

51. A service base station, characterized by including:

Processor, configured to generate first downlink control information DCI signaling and first demodulation reference signal DMRS;

A transmitter configured to send first downlink control information DCI signaling to the first user equipment UE, where the first DCI signaling includes first indication information, and the first indication information is used to instruct sending of the first demodulation reference The signal DMRS is not transmitted simultaneously with the physical downlink shared channel PDSCH; and, the first DMRS is transmitted to the first UE without transmitting the PDSCH.

52. The serving base station according to claim 51, characterized in that the transmitter is specifically used for:

53. The service base station according to claim 51 or 52, characterized in that the transmitter is also specifically used for:

54. The service base station according to any one of claims 51-53, characterized in that the transmitter is also used for:

The serving base station sends the first DMRS to the first UE without sending the PDSCH, and the serving base station sends a second DMRS to the second UE on the time-frequency resource corresponding to the first DMRS, and at the same time, The serving base station sends the second PDSCH corresponding to the second DMRS to the second UE.

55. The service base station according to any one of claims 51-54, characterized in that the transmitter is also used for:

A third PDSCH and a third DMRS sent simultaneously with the third PDSCH are sent to the first UE, so that the first UE demodulates the third PDSCH according to the third DMRS.

56. The serving base station according to claim 55, wherein the transmitter is further configured to: send a first virtual cell number parameter used to generate the first DMRS to the first UE; The first UE sends a second virtual cell number parameter used to generate the third DMRS; wherein, the first virtual cell number parameter and the second virtual cell number parameter are the same, so that the UE can generate the second virtual cell number parameter according to the same The first virtual cell number parameter and the second virtual cell number parameter determine that the first DMRS and the third DMRS are configured by the serving base station.

57. The serving base station according to claim 55, wherein the transmitter is further configured to: send radio resource control RRC signaling to the first UE, wherein the RRC signaling includes second indication information, The second indication information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station, so that the UE can learn the first DMRS and the third DMRS according to the second indication information. DMRS is configured by the serving base station; or, the first DCI signaling also includes second indication information, and the second indication information is used to indicate that the first DMRS and the third DMRS are the serving base station. configured by the base station, so that the UE learns that the first DMRS and the third DMRS are configured by the serving base station according to the second indication information; or,

Send second DCI signaling to the first UE, where the second DCI signaling includes second indication information, where the second indication information is used to indicate that the first DMRS and the third DMRS are the configured by the serving base station, so that the UE learns that the first DMRS and the third DMRS are configured by the serving base station according to the second indication information.

58. A user equipment UE, characterized by: including:

A receiver, configured to receive at least two channel state information reference signal CSI-RS resources configured by the same serving base station, and receive the demodulation reference signal DMRS sent by the serving base station;

A processor, configured to learn that the at least two channel state information reference signal CSI-RS resources are configured by the serving base station, and learn that the DMRS is configured by the serving base station.

59. The UE according to claim 58, characterized in that,

The receiver is specifically used for

A CSI-RS configuration information unit, the CSI-RS configuration information unit includes the at least two CSI-RS resources, so that the UE uses the CSI-RS resources included in the first RRC signaling

73 Determined to be configured by the serving base station; or,

60. The UE according to claim 59, characterized in that,

The receiver is specifically configured to receive first downlink control information DCI signaling sent by the serving base station. The first DCI signaling includes second indication information. The second indication information is used to indicate the DMRS and At least one CSI-RS resource among the at least two CSI-RS resources is configured by the serving base station; the processor is specifically configured to obtain the DMRS and the at least two CSI-RS resources according to the first DCI signaling. CSI-RS resources are configured by the serving base station;

or,

The receiver is specifically configured to receive first RRC signaling sent by the serving base station, where the first RRC signaling includes second indication information, and the second indication information is used to indicate the DMRS and the at least two At least one CSI-RS resource among the CSI-RS resources is configured by the serving base station; the processor is specifically configured to obtain the DMRS and the at least two CSI-RS resources according to the first RRC signaling. It is configured by the serving base station;

or,

The receiver is specifically configured to receive the second RRC signaling sent by the serving base station, and the second

74 The RRC signaling includes second indication information, the second indication information is used to indicate that at least one of the DMRS and the at least two CSI-RS resources is configured by the serving base station; the processing The device is specifically configured to learn, according to the second RRC signaling, that the DMRS and the at least two CSI-RS resources are configured by the serving base station.

61. The UE according to claim 58, characterized in that,

The receiver is specifically configured to receive RRC signaling sent by the serving base station, wherein the RRC signaling includes a first CSI-RS resource, and the first CSI-RS resource is the at least two CSI-RS resources. Any CSI-RS resource among the RS resources; receiving the second DCI signaling sent by the serving base station, wherein the second DCI signaling includes at least one second pairing information, and the at least one second pairing information Each second pairing information is used to indicate the time-frequency resource location information of the second CSI-RS resource relative to the first CSI-RS resource within a physical resource block PRB, or, each second pairing information used to indicate the time-frequency resource location information of the second CSI-RS resource, where the second CSI-RS resource is any of the at least two CSI-RS resources that is different from the first CSI-RS resource. One CSI-RS resource, the first CSI-RS resource and the second CSI-RS resource share other CSI-RS resource parameters except time-frequency resource location information;

The processor is specifically configured to determine the first CSI-RS resource and the second CSI-RS resource indicated by the second pairing information as being configured by the serving base station.

62. The UE according to claim 61, characterized in that,

The receiver is specifically configured to receive the DMRS sent by the serving base station in the same subframe as the second DCI signaling;

The processor is specifically configured to determine the at least two CSI-RS resources indicated by the second DCI signaling and the DMRS sent in the subframe as configured by the serving base station.

63. A user equipment UE, characterized by: including:

A receiver configured to receive first downlink control information DCI signaling sent by the serving base station, where the first DCI signaling includes first indication information, and the first indication information is used to instruct sending of the first demodulation reference signal DMRS. The physical downlink shared channel PDSCH is not sent at the same time; and, receiving the first DMRS sent by the serving base station, the first DMRS and the PDSCH are not sent at the same time; a processor, configured to cache the first DCI signaling and The first DMRS.

64. The UE according to claim 63, characterized in that,

The receiver is further configured to receive the third PDSCH sent by the serving base station and the third PDSCH sent by the serving base station. Three PDSCHs transmit the third DMRS simultaneously;

65. The UE according to claim 64, characterized in that,

The receiver is further configured to: receive a first virtual cell number parameter used to generate the first DMRS and a second virtual cell number parameter used to generate the third DMRS sent by the serving base station, The first virtual cell number parameter and the second virtual cell number parameter are the same; the processor is further configured to obtain the first DMRS according to the same first virtual cell number parameter and the second cell virtual number parameter. The third DMRS is configured by the serving base station.

66. The UE according to claim 64, wherein the receiver is further configured to: receive radio resource control RRC signaling sent by the serving base station, where the RRC signaling includes second indication information, so The second indication information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station; or, the first DCI signaling also includes second indication information, and the second indication information used to indicate that the first DMRS and the third DMRS are configured by the serving base station; or, receive second DCI signaling sent by the serving base station, where the second DCI signaling includes second indication information , the second indication information is used to indicate that the first DMRS and the third DMRS are configured by the serving base station; the processor is also used to obtain the first DMRS and the third DMRS according to the second indication information. The third DMRS is configured by the serving base station.

76