CN103891371B

CN103891371B - A kind of method, serving BS and user equipment for configuring pilot signal

Info

Publication number: CN103891371B
Application number: CN201280001572.0A
Authority: CN
Inventors: 吴作敏; 治欣慰; 杨建兵; 夏亮; 刘江华; 大卫·马瑞泽
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2012-08-13
Filing date: 2012-08-13
Publication date: 2018-04-20
Anticipated expiration: 2032-08-13
Also published as: CN103891371A; WO2014026320A1

Abstract

The present invention provides a kind of method, serving BS and user equipment for configuring pilot signal.This method includes a serving BS and configures at least two channel state information reference signals CSI RS resources for a user equipment (UE), and notifies that at least two CSI RS resources are configured by the serving BS described in the UE；The serving BS sends demodulated reference signal DMRS to the UE, and notifies that DMRS is configured by the serving BS described in the UE.It is not accurate enough that the embodiment of the present invention can solve the problems, such as that above-mentioned three kinds of pilot signals are not from existing Time and Frequency Synchronization during same website.

Description

A kind of method, serving BS and user equipment for configuring pilot signal

Technical field

The present invention relates to wireless communication technique, more particularly to a kind of method, serving BS and user for configuring pilot signal Equipment.

Background technology

In senior long term evolution (Long Term Evolution Advanced, LTE-A) system, enhanced base station (enhanced NodeB, eNB) can configure public reference signal (Cell-Specific Reference Signal, CRS), And/or demodulated reference signal (Demodulation Reference Signal, DMRS) and/or channel condition information are with reference to letter Pilot signals such as number (Channel-State Information Reference Signal, CSI-RS) is to user equipment (User Equipment, UE), DMRS is referred to as user's demodulated reference signal (UE-Specific Reference Signal).Under normal conditions, UE can receive the CRS sequences of serving cell transmission, pass through after synchronous and cell searching is completed CRS sequences complete the time of UE and serving cell and/or Frequency Synchronization (hereinafter referred to as Time and Frequency Synchronization).UE can basis at the same time The CRS sequences or CSI-RS sequences of eNB configurations complete the measurement of correlation of CSI and are reported to eNB.ENB is carrying out resource to UE When scheduling, the metrical information that UE is reported can be referred to, and letter is shared to UE scheduling physical downs with a certain transmission mode Road (Physical Downlink Shared Channel, PDSCH), UE, can be according to CRS after downlink data packet has been detected Sequence or DMRS sequence pairs PDSCH are demodulated.

When eNB is configured with tri- kinds of pilot signals of CRS, CSI-RS and DMRS to UE, UE completes CSI correlative measurements according to CSI-RS Amount, when completing PDSCH demodulation according to DMRS, if above-mentioned three kinds of pilot signals come from same eNB, UE is according to CRS sequences The eNB can be accurately synchronized to.But by macro base station and Remote Radio Unit (Remote Radio Head, RRH) group Into coordinate multipoint transmission/reception (Coordinated Multiple Point transmission/reception, CoMP) Under scene, possible macro base station and RRH all have identical cell number (Cell ID).In such a scenario, macro base station is necessarily sent out CRS sequences are sent, RRH, which may be sent, may not also send CRS sequences, and therefore, the CRS sequences that UE is received come from macro base station, or It is the superposition sequence for the CRS sequences that macro base station and RRH are sent.When the serving BS of UE is some RRH, i.e. RRH sends for UE During DMRS and PDSCH, if UE still carries out Time and Frequency Synchronization using the CRS received, macro base station or superposition sequence will be synchronized to Corresponding website is arranged, and cannot accurately be traced on the RRH for its service, can so cause UE demodulation performances to be deteriorated.

The content of the invention

In view of this, an embodiment of the present invention provides it is a kind of configure pilot signal method, serving BS and user equipment, Existing Time and Frequency Synchronization is not accurate enough during solving the problems, such as that above-mentioned three kinds of pilot signals are not from same base station.

First aspect, there is provided a kind of method for configuring pilot signal, including：

One serving BS configures at least two channel state information reference signals CSI-RS moneys for a user equipment (UE) Source, and notify that at least two CSI-RS resource are configured by the serving BS described in the UE；

The serving BS sends demodulated reference signal DMRS to the UE, and notifies that DMRS described in the UE is by described Serving BS configuration.

In the first possible implementation of first aspect,

In at least two CSI-RS resource, at least two CSI-RS resource are mapped to different Orthogonal Frequency Division Multiplexing OFDM symbol；Alternatively,

The subframe indicated by subframe configuration information that at least two CSI-RS resource includes is a subframe or two A subframe.

With reference to first aspect or first aspect the first possible implementation, in second of possible implementation In, it is described to notify that at least two CSI-RS resource are configured by the serving BS described in the UE, including：

The first radio resource control RRC signaling is sent to the UE, wherein, first RRC signaling includes：

One CSI-RS configuration information unit, the CSI-RS configuration information unit include at least two CSI-RS Resource, so that the CSI-RS resource that first RRC signaling includes is determined as being configured by the serving BS by the UE 's；Alternatively,

At least two CSI-RS configuration information units, each CSI- at least two CSI-RS configuration informations unit RS configuration informations unit includes a CSI-RS resource at least two CSI-RS resource, and the first configured information, and First configured information at least two CSI-RS configuration informations unit is identical, so that the UE is according to The first identical configured information, is determined as what is configured by the serving BS by least two CSI-RS resource；Alternatively,

One CSI-RS configuration information unit, the CSI-RS configuration information unit is including the first CSI-RS resource and extremely Few first unpaired message, each first unpaired message at least one first unpaired message are used to indicate at one The running time-frequency resource positional information of second CSI-RS resource in Physical Resource Block PRB, or each first unpaired message are used for Running time-frequency resource positional information of second CSI-RS resource relative to first CSI-RS resource is indicated, so that the UE is by described in First CSI-RS resource and second CSI-RS resource of first unpaired message instruction are determined as by the service Base station configuration, first CSI-RS resource be at least two CSI-RS resource in any one CSI-RS resource, institute The second CSI-RS resource is stated as any one different from first CSI-RS resource at least two CSI-RS resource CSI-RS resource, first CSI-RS resource and second CSI-RS resource share its in addition to running time-frequency resource positional information His CSI-RS resource parameter.

With reference to first aspect or first aspect any possible implementation, in the third possible implementation In, it is described to notify that DMRS is configured by the serving BS described in the UE, including：

By to the UE send the first Downlink Control Information DCI signal the UE described in DMRS be by the service Base station configuration, wherein, the first DCI signalings include the second configured information, and second configured information is used to indicate described At least one CSI-RS resource is configured by the serving BS in DMRS and at least two CSI-RS resource, with to institute State UE and notify that the DMRS and at least two CSI-RS resource are that the serving BS configures；Or

Notify that DMRS is configured by the serving BS described in the UE by sending the first RRC signaling to the UE, Wherein, first RRC signaling includes the second configured information, second configured information be used to indicating the DMRS and it is described extremely At least one CSI-RS resource is configured by the serving BS in few two CSI-RS resource, with to described in UE notices DMRS is that the serving BS configures with least two CSI-RS resource；Or

Notify that DMRS is configured by the serving BS described in the UE by sending the second RRC signaling to the UE, Wherein, second RRC signaling includes the second configured information, second configured information be used to indicating the DMRS and it is described extremely At least one CSI-RS resource is configured by the serving BS in few two CSI-RS resource, with to described in UE notices The CSI-RS resource of DMRS and described at least two is that the serving BS configures.

With reference to first aspect or first aspect the first possible implementation, in the 4th kind of possible implementation In, it is described to notify that at least two CSI-RS resource described in the UE are that the method is also before being configured by the serving BS Including：RRC signaling is sent to the UE, wherein, the RRC signaling includes the first CSI-RS resource, the first CSI-RS Resource is any one CSI-RS resource at least two CSI-RS resource；

It is described to notify that at least two CSI-RS resource are configured by the serving BS described in the UE, including：To institute State UE and send the second Downlink Control Information DCI signalings, wherein, the 2nd DCI signalings include at least one second pairing letter Breath, each second unpaired message is used to indicate in a Physical Resource Block PRB the at least one second unpaired message Two CSI-RS resource relative to first CSI-RS resource running time-frequency resource positional information, alternatively, it is described it is each second pairing Information is used to indicating the running time-frequency resource positional information of second CSI-RS resource, second CSI-RS resource for it is described at least Any one CSI-RS resource different from first CSI-RS resource in the CSI-RS resource of two, so that the UE is by described in First CSI-RS resource and second CSI-RS resource of second unpaired message instruction are determined as by the service Base station configuration, first CSI-RS resource and second CSI-RS resource share its in addition to running time-frequency resource positional information His CSI-RS resource parameter.

The 4th kind of possible implementation with reference to first aspect, it is described to institute in the 5th kind of possible implementation State UE and send demodulated reference signal DMRS, and notify that DMRS is configured by the serving BS described in the UE, including：

In the subframe identical with the 2nd DCI signalings, the DMRS is sent to the UE so that the UE is by described in At least two CSI-RS resource and the DMRS of transmission in the subframe indicated by 2nd DCI signalings are by the clothes It is engaged in what base station configured.

Second aspect, there is provided a kind of method for configuring pilot signal, including：

Serving BS sends the first Downlink Control Information DCI signalings, the first DCI signaling bags to the first user equipment (UE) The first configured information is included, thing is sent when different when first configured information is used to indicate to send the first demodulated reference signal DMRS Manage DSCH Downlink Shared Channel PDSCH；

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

In the first possible implementation of second aspect,

The first DCI signalings of the transmission, including：

After first UE access is detected, the first DCI signalings are sent；Alternatively,

The uplink signaling that the first UE is sent is received, the first DCI signalings are sent according to the uplink signaling.

With reference to the possible implementation of the first of second aspect or second aspect, in second of possible implementation In, it is described to send the first DMRS to the first UE and do not send the PDSCH, including：

After often sending once the first DCI signalings, the first DMRS described in periodicity sending and the PDSCH is not sent； Alternatively,

The first DCI signalings are often sent once, once the first DMRS is sent and does not send the PDSCH.

With reference to second aspect or any possible implementation of second aspect, in the third possible implementation In, the serving BS sends the first DMRS and does not send the PDSCH and further includes to the first UE：

The serving BS sends the first DMRS to the first UE and does not send the PDSCH, the service base Stand and send the 2nd DMRS to the 2nd UE on the corresponding running time-frequency resources of the first DMRS, while the serving BS is to described the Two UE send corresponding 2nd PDSCH of the 2nd DMRS.

With reference to second aspect or any possible implementation of second aspect, in the 4th kind of possible implementation In, after the serving BS sends the first DMRS and do not send the PDSCH to the first UE, the method is also wrapped Include：

The 3rd PDSCH and the 3rd DMRS sent at the same time with the 3rd PDSCH are sent to the first UE, with toilet State the first UE and the 3rd PDSCH is demodulated according to the 3rd DMRS.

With reference to the 4th kind of possible implementation of second aspect, in the 5th kind of possible implementation, the service Before base station sends the first DMRS and do not send the PDSCH to the first UE, alternatively, the serving BS is to described First UE sends the first DMRS and does not send in the PDSCH, and the method further includes：Send and be used for the first UE Generate the first virtual subdistrict number parameter of the first DMRS；

It is described to the first UE send the 3rd PDSCH and with the 3rd PDSCH at the same time send the 3rd DMRS it Before, alternatively, described send in the 3rd PDSCH and the 3rd DMRS sent at the same time with the 3rd PDSCH to the first UE, The method further includes：The the second virtual subdistrict number parameter for being used for generating the 3rd DMRS is sent to the first UE,

Wherein, first virtual subdistrict number parameter is identical with second virtual subdistrict number parameter, so as to described UE according to the first identical virtual subdistrict number parameter and the second virtual subdistrict number parameter know the first DMRS with 3rd DMRS is the serving BS configuration.

With reference to the 4th kind of possible implementation of second aspect, in the 6th kind of possible implementation, to described One UE send the 3rd PDSCH and with the 3rd PDSCH at the same time send the 3rd DMRS before, or to the first UE send In 3rd PDSCH and the 3rd DMRS sent at the same time with the 3rd PDSCH, the method further includes：The serving BS Radio resource control RRC signaling is sent to the first UE, the RRC signaling includes the second configured information, and described second refers to Show that information is used to indicate that the first DMRS and the 3rd DMRS is the serving BS configuration, so that the UE is according to institute State the second configured information and know that the first DMRS and the 3rd DMRS is the serving BS configuration；Alternatively,

Before the 3rd PDSCH and the 3rd DMRS sent at the same time with the 3rd PDSCH being sent to the first UE, or Sent to the first UE in the 3rd PDSCH and the 3rd DMRS sent at the same time with the 3rd PDSCH, the method is also wrapped Include：Further include the second configured information in the first DCI signalings, second configured information be used to indicating the first DMRS and 3rd DMRS is the serving BS configuration, so that the UE knows described first according to second configured information DMRS and the 3rd DMRS is the serving BS configuration；Alternatively,

Before the 3rd PDSCH and the 3rd DMRS sent at the same time with the 3rd PDSCH being sent to the first UE, or Sent to the first UE in the 3rd PDSCH and the 3rd DMRS sent at the same time with the 3rd PDSCH, the method is also wrapped Include：The serving BS sends the 2nd DCI signalings to the first UE, and the 2nd DCI signalings include the second configured information, Second configured information is used to indicate that the first DMRS and the 3rd DMRS is the serving BS configuration, with toilet State UE and know that the first DMRS and the 3rd DMRS is that the serving BS configures according to second configured information.

The third aspect, there is provided a kind of method for configuring pilot signal, including：

One user equipment (UE) knows at least two channel state information reference signals CSI- of a serving BS configuration RS resources, and at least two CSI-RS resource are configured by the serving BS；

The UE receives the demodulated reference signal DMRS that the serving BS is sent, and knows that the DMRS is by the clothes It is engaged in what base station configured.

In the first possible implementation of the third aspect,

The UE knows at least two CSI-RS resource of serving BS configuration, and at least two CSI-RS resource Configured by the serving BS, including：

UE receives the first radio resource control RRC signaling that the serving BS is sent, wherein, first RRC signaling Include：

It is described to know in second of possible implementation with reference to the first possible implementation of the third aspect The DMRS is configured by the base station, including：

The first Downlink Control Information DCI signalings that the serving BS is sent are received, the first DCI signalings include second Configured information, second configured information are used to indicate at least one in the DMRS and at least two CSI-RS resource CSI-RS resource is configured by the serving BS, knows the DMRS and described at least two according to the first DCI signalings A CSI-RS resource is the serving BS configuration；Or

The first RRC signaling that the serving BS is sent is received, first RRC signaling includes the second configured information, institute The second configured information is stated to be used to indicate that at least one CSI-RS resource is in the DMRS and at least two CSI-RS resource Configured by the serving BS, the DMRS and at least two CSI-RS resource are known according to first RRC signaling It is that the serving BS configures；Or

The second RRC signaling that the serving BS is sent is received, second RRC signaling includes the second configured information, institute The second configured information is stated to be used to indicate that at least one CSI-RS resource is in the DMRS and at least two CSI-RS resource Configured by the serving BS, the DMRS and at least two CSI-RS resource are known according to second RRC signaling It is that the serving BS configures.

It is described to know a serving BS configuration at least in the third possible implementation with reference to the third aspect Two channel state information reference signals CSI-RS resource, and at least two CSI-RS resource are by the serving BS Configuration, including：

The RRC signaling that the serving BS is sent is received, wherein, the RRC signaling includes the first CSI-RS resource, institute The first CSI-RS resource is stated as any one CSI-RS resource at least two CSI-RS resource；

The 2nd DCI signalings that the serving BS is sent are received, wherein, the 2nd DCI signalings include at least one Second unpaired message, each second unpaired message is used to indicate in a physical resource at least one second unpaired message In block PRB the second CSI-RS resource relative to first CSI-RS resource running time-frequency resource positional information, alternatively, described each Second unpaired message is used for the running time-frequency resource positional information for indicating second CSI-RS resource, and second CSI-RS resource is Any one CSI-RS resource different from first CSI-RS resource in described at least two CSI-RS resource, described first CSI-RS resource and second CSI-RS resource share other CSI-RS resource parameters in addition to running time-frequency resource positional information；

Second CSI-RS resource that first CSI-RS resource and second unpaired message indicate is determined It is to be configured by the serving BS.

It is described to connect in the 4th kind of possible implementation in the third possible implementation with reference to the third aspect The DMRS that the serving BS is sent is received, and knows that the DMRS is configured by the serving BS, including：

In the subframe identical with the 2nd DCI signalings, the DMRS that the serving BS is sent is received；

Described in being sent at least two CSI-RS resource indicated by the 2nd DCI signalings and the subframe DMRS is determined as the serving BS configuration.

4th on the one hand, there is provided a kind of method for configuring pilot signal, including：

User equipment (UE) receives the first Downlink Control Information DCI signalings that serving BS is sent, the first DCI signaling bags The first configured information is included, thing is sent when different when first configured information is used to indicate to send the first demodulated reference signal DMRS Manage DSCH Downlink Shared Channel PDSCH；

The UE receives the first DMRS that the serving BS is sent, and the first DMRS is sent out when different from PDSCH Send.

In the first possible implementation of fourth aspect,

Further include：

The UE receives the 3rd PDSCH that the serving BS sends and sent at the same time with the 3rd PDSCH the Three DMRS；

The UE demodulates the 3rd PDSCH according to the 3rd DMRS.

With reference to the first possible implementation of fourth aspect, in second of possible implementation, further include：

The UE receives the first virtual subdistrict numbering ginseng for being used to generate the first DMRS that the serving BS is sent Number, and for generating the second virtual subdistrict number parameter of the 3rd DMRS, first virtual subdistrict number parameter and Second virtual subdistrict number parameter is identical；

The UE is obtained according to identical first virtual subdistrict number parameter and second virtual subdistrict number parameter It is that the serving BS configures to know the first DMRS and the 3rd DMRS.

With reference to the first possible implementation of fourth aspect, in the third possible implementation, further include：

The UE receives the radio resource control RRC signaling that the serving BS is sent, and the RRC signaling includes second Configured information, second configured information are used to indicate that the first DMRS and the 3rd DMRS is the serving BS configuration 's；The UE knows that the first DMRS and the 3rd DMRS is that the serving BS configures according to second configured information 's；Alternatively,

The second configured information is further included in the first DCI signalings, second configured information is used to indicate described first DMRS and the 3rd DMRS is the serving BS configuration, and the UE knows described first according to second configured information DMRS and the 3rd DMRS is the serving BS configuration；Alternatively,

The UE receives the 2nd DCI signalings that the serving BS is sent, and the 2nd DCI signalings include the second instruction Information, second configured information are used to indicate that the first DMRS and the 3rd DMRS is the serving BS configuration； The UE knows that the first DMRS and the 3rd DMRS is that the serving BS configures according to second configured information.

5th aspect, there is provided a kind of serving BS, including：

Configuration module, for configuring at least two channel state information reference signals CSI-RS moneys for a user equipment (UE) Source, and notify that at least two CSI-RS resource are configured by the serving BS described in the UE；

First sending module, for sending demodulated reference signal DMRS to the UE, and notifies that DMRS described in the UE is Configured by the serving BS.

In the first possible implementation of the 5th aspect,

In at least two CSI-RS resource of the configuration module configuration, at least two CSI-RS resource are mapped to Different orthogonal frequency division multiplex OFDM symbols；Alternatively,

The subframe indicated by subframe configuration information that at least two CSI-RS resource includes is a subframe, or two A subframe.

With reference to the 5th aspect or the first possible implementation of the 5th aspect, in second of possible implementation In, the configuration module is specifically used for：

With reference to second of possible implementation of the 5th aspect, in the third possible implementation, further include：

Second sending module, for signaling the UE institutes by sending the first Downlink Control Information DCI to the UE DMRS is stated to be configured by the serving BS, wherein, the first DCI signalings include the second configured information, and described second refers to Show that information is used to indicate that at least one CSI-RS resource is by the clothes in the DMRS and at least two CSI-RS resource It is engaged in what base station configured, to notify that the DMRS and at least two CSI-RS resource are that the serving BS configures to the UE 's；Or

With reference to the 5th aspect or the first possible implementation of the 5th aspect, in the 4th kind of possible implementation In, the configuration module is specifically used for：

RRC signaling is sent to the UE, wherein, the RRC signaling includes the first CSI-RS resource, the first CSI- RS resources are any one CSI-RS resource at least two CSI-RS resource；

The second Downlink Control Information DCI signalings are sent to the UE, wherein, the 2nd DCI signalings include at least one A second unpaired message, each second unpaired message is used to indicate to provide in a physics at least one second unpaired message In source block PRB the second CSI-RS resource relative to first CSI-RS resource running time-frequency resource positional information, alternatively, described every A second unpaired message is used for the running time-frequency resource positional information for indicating second CSI-RS resource, second CSI-RS resource For any one CSI-RS resource different from first CSI-RS resource in described at least two CSI-RS resource, with toilet UE is stated to be determined as second CSI-RS resource that first CSI-RS resource and second unpaired message indicate Configured by the serving BS, first CSI-RS resource and second CSI-RS resource are shared except running time-frequency resource position Other CSI-RS resource parameters outside information.

With reference to the 4th kind of possible implementation of the 5th aspect, in the 5th kind of possible implementation, described first Sending module is specifically used for：

6th aspect, there is provided a kind of serving BS, including：

First sending module, for the first user equipment (UE) send the first Downlink Control Information DCI signalings, described first DCI signalings include the first configured information, when first configured information is for indicating to send the first demodulated reference signal DMRS not Send Physical Downlink Shared Channel PDSCH at the same time；

Second sending module, for sending the first DMRS to the first UE and not sending the PDSCH.

In the first possible implementation of the 6th aspect,

First sending module is specifically used for：

With reference to the 6th aspect or the first possible implementation of the 6th aspect, in second of possible implementation In, second sending module is specifically used for：

With reference to the 6th aspect or any possible implementation of the 6th aspect, in the third possible implementation In, the 3rd sending module, for sending the 2nd DMRS, while institute to the 2nd UE on the corresponding running time-frequency resources of the first DMRS State serving BS and send corresponding 2nd PDSCH of the 2nd DMRS to the 2nd UE.

With reference to the 6th aspect or any possible implementation of the 6th aspect, in the 4th kind of possible implementation In, further include：

4th sending module, for sending the 3rd PDSCH to the first UE and being sent at the same time with the 3rd PDSCH The 3rd DMRS, so that the first UE demodulates the 3rd PDSCH according to the 3rd DMRS.

With reference to the 4th kind of possible implementation of the 6th aspect, in the 5th kind of possible implementation, further include：

5th sending module, is compiled for sending the first virtual subdistrict for being used to generate the first DMRS to the first UE Number parameter；And the second virtual subdistrict number parameter for being used for generating the 3rd DMRS is sent to the first UE, wherein, First virtual subdistrict number parameter is identical with second virtual subdistrict number parameter, so that the UE is according to described identical The first virtual subdistrict number parameter and the second virtual subdistrict number parameter know that the first DMRS and the 3rd DMRS is The serving BS configuration.

With reference to the 4th kind of possible implementation of the 6th aspect, in the 6th kind of possible implementation, described first The second configured information is further included in DCI signalings, second configured information is used to indicate the first DMRS and the described 3rd DMRS is serving BS configuration, so that the UE knows the first DMRS and described according to second configured information 3rd DMRS is the serving BS configuration；Alternatively, the serving BS further includes：

6th sending module, for sending radio resource control RRC signaling to the first UE, is wrapped in the RRC signaling The second configured information is included, second configured information is used to indicate that the first DMRS and the 3rd DMRS is the service base Stand what is configured, so that the UE knows that the first DMRS and the 3rd DMRS is the clothes according to second configured information It is engaged in what base station configured；Alternatively,

The 2nd DCI signalings are sent to the first UE, the 2nd DCI signalings include the second configured information, and described the Two configured informations are used to indicate that the first DMRS and the 3rd DMRS is the serving BS configuration, so as to the UE roots Know that the first DMRS and the 3rd DMRS is the serving BS configuration according to second configured information.

7th aspect, there is provided a kind of UE, including：

First knows module, for knowing at least two channel state information reference signals of a serving BS configuration CSI-RS resource, and at least two CSI-RS resource are configured by the serving BS；

Second knows module, the demodulated reference signal DMRS sent for receiving the serving BS, and knows described DMRS is configured by the serving BS.

In the first possible implementation of the 7th aspect,

Described first knows that module is specifically used for：

The first radio resource control RRC signaling that the serving BS is sent is received, wherein, in first RRC signaling Including：

With reference to the first possible implementation of the 7th aspect, in second of possible implementation, described second Know that module is specifically used for：

In the third possible implementation of the 7th aspect, described first knows that module is specifically used for：

With reference to the third possible implementation of the 7th aspect, in the 4th kind of possible implementation, described second Know that module is specifically used for：

Eighth aspect, there is provided a kind of UE, including：

First receiving module, the first Downlink Control Information DCI signalings sent for receiving serving BS, described first DCI signalings include the first configured information, when first configured information is for indicating to send the first demodulated reference signal DMRS not Send Physical Downlink Shared Channel PDSCH at the same time；

Second receiving module, the first DMRS sent for receiving the serving BS, the first DMRS with PDSCH is sent when different.

In the first possible implementation of eighth aspect,

3rd receiving module, for receiving the 3rd PDSCH that the serving BS sends and same with the 3rd PDSCH When the 3rd DMRS that sends；

Demodulation module, for demodulating the 3rd PDSCH according to the 3rd DMRS.

With reference to the first possible implementation of eighth aspect, in second of possible implementation, further include：

4th receiving module, first for generating the first DMRS for receiving the serving BS transmission are virtual Cell number parameter, and for generating the second virtual subdistrict number parameter of the 3rd DMRS, first virtual subdistrict Number parameter is identical with second virtual subdistrict number parameter；

First determining module, for according to identical first virtual subdistrict number parameter and second virtual subdistrict Number parameter knows that the first DMRS and the 3rd DMRS is that the serving BS configures.

With reference to the first possible implementation of eighth aspect, in the third possible implementation, further include：

5th receiving module, the radio resource control RRC signaling sent for receiving the serving BS, the RRC letters Order includes the second configured information, and second configured information is used to indicate that the first DMRS and the 3rd DMRS is described Serving BS configuration；The UE knows that the first DMRS and the 3rd DMRS is described according to second configured information Serving BS configuration；Alternatively,

The 2nd DCI signalings that the serving BS is sent are received, the 2nd DCI signalings include the second configured information, Second configured information is used to indicate that the first DMRS and the 3rd DMRS is the serving BS configuration；The UE Know that the first DMRS and the 3rd DMRS is the serving BS configuration according to second configured information；Alternatively, The second configured information is further included in the first DCI signalings, second configured information is used to indicate the first DMRS and institute It is the serving BS configuration to state the 3rd DMRS, and the UE knows the first DMRS and institute according to second configured information It is the serving BS configuration to state the 3rd DMRS；

Second determining module, for knowing that the first DMRS and the 3rd DMRS are according to second configured information The serving BS configuration.

9th aspect, there is provided a kind of serving BS, including：

Processor, for configuring at least two channel state information reference signals CSI-RS moneys for a user equipment (UE) Source；

Transmitter, at least two CSI-RS resource to be sent to the UE, and notifies described in the UE at least Two CSI-RS resource are configured by the serving BS, and send demodulated reference signal DMRS to the UE, and are notified DMRS is configured by the serving BS described in the UE.

In the first possible implementation of the 9th aspect,

In at least two CSI-RS resource of the processor configuration, at least two CSI-RS resource are mapped to not Same orthogonal frequency division multiplex OFDM symbol；Alternatively,

With reference to the 9th aspect or the first possible implementation of the 9th aspect, in second of possible implementation In, the transmitter is specifically used for：

With reference to second of possible implementation of the 9th aspect, in the third possible implementation, the transmission Device also particularly useful for：

With reference to the 9th aspect or the first possible implementation of the 9th aspect, in the 4th kind of possible implementation In, the transmitter is specifically used for：

With reference to the 4th kind of possible implementation of the 9th aspect, in the 5th kind of possible implementation, the transmission Device also particularly useful for：

Tenth aspect, there is provided a kind of serving BS, including：

Processor, for generating the first Downlink Control Information DCI signalings and the first demodulated reference signal DMRS；

Transmitter, for sending the first Downlink Control Information DCI signalings, the first DCI letters to the first user equipment (UE) Order includes the first configured information, is sent out when different when first configured information is used to indicate to send the first demodulated reference signal DMRS Send Physical Downlink Shared Channel PDSCH.

In the first possible implementation of the tenth aspect,

The transmitter is specifically used for：

With reference to the tenth aspect or the first possible implementation of the tenth aspect, in second of possible implementation In, the transmitter also particularly useful for：

With reference to the tenth aspect or any possible implementation of the tenth aspect, in the third possible implementation In, the transmitter is additionally operable to：

With reference to the tenth aspect or any possible implementation of the tenth aspect, in the 4th kind of possible implementation In, the transmitter is additionally operable to：

With reference to the 4th kind of possible implementation of the tenth aspect, in the 5th kind of possible implementation, the transmission Device is additionally operable to：

The the first virtual subdistrict number parameter for being used for generating the first DMRS is sent to the first UE；

The the second virtual subdistrict number parameter for being used for generating the 3rd DMRS is sent to the first UE；

With reference to the 4th kind of possible implementation of the tenth aspect, in the 6th kind of possible implementation, the transmission Device is additionally operable to：

Radio resource control RRC signaling is sent to the first UE, the RRC signaling includes the second configured information, institute State the second configured information to be used to indicate that the first DMRS and the 3rd DMRS is the serving BS configuration, so as to described UE knows that the first DMRS and the 3rd DMRS is that the serving BS configures according to second configured information；Or Person,

The second configured information is further included in the first DCI signalings, second configured information is used to indicate described first DMRS and the 3rd DMRS is the serving BS configuration, so that the UE is according to being known second configured information First DMRS and the 3rd DMRS is the serving BS configuration；Alternatively,

Tenth on the one hand, there is provided a kind of UE, including：

Receiver, for receiving at least two channel state information reference signals CSI-RS of same serving BS configuration Resource, and receive the demodulated reference signal DMRS that the serving BS is sent；

Processor, for knowing that at least two channel state information reference signals CSI-RS resource is the service base Stand what is configured, and know that the DMRS is the serving BS configuration.

In the first possible implementation of the tenth one side,

The receiver is specifically used for

It is described to connect in second of possible implementation with reference to the first possible implementation of the tenth one side Receive implement body to be used to receive the first Downlink Control Information DCI signalings that the serving BS is sent, the first DCI signalings include Second configured information, second configured information are used to indicate at least one in the DMRS and at least two CSI-RS resource A CSI-RS resource is configured by the serving BS；The processor is specifically used for being known according to the first DCI signalings The DMRS is that the serving BS configures with least two CSI-RS resource；

Alternatively,

The receiver is specifically used for receiving the first RRC signaling that the serving BS is sent, the first RRC signaling bag The second configured information is included, second configured information is used to indicate in the DMRS and at least two CSI-RS resource at least One CSI-RS resource is configured by the serving BS；The processor is specifically used for being obtained according to first RRC signaling It is that the serving BS configures to know the DMRS and at least two CSI-RS resource；

Alternatively,

The receiver is specifically used for receiving the second RRC signaling that the serving BS is sent, the second RRC signaling bag The second configured information is included, second configured information is used to indicate in the DMRS and at least two CSI-RS resource at least One CSI-RS resource is configured by the serving BS；The processor is specifically used for being obtained according to second RRC signaling It is that the serving BS configures to know the DMRS and at least two CSI-RS resource.

With reference to the third possible implementation of the tenth one side, the receiver is specifically used for receiving the service base Stand send RRC signaling, wherein, the RRC signaling includes the first CSI-RS resource, and first CSI-RS resource is described Any one CSI-RS resource at least two CSI-RS resource；The 2nd DCI signalings that the serving BS is sent are received, its In, the 2nd DCI signalings include at least one second unpaired message, each at least one second unpaired message Two unpaired messages are used to indicate that the second CSI-RS resource to be relative to first CSI-RS resource in a Physical Resource Block PRB Running time-frequency resource positional information, alternatively, each second unpaired message is used to indicate the time-frequency of second CSI-RS resource Resource location information, second CSI-RS resource be described at least two CSI-RS resource in the first CSI-RS provide Any one different CSI-RS resource of source, first CSI-RS resource and second CSI-RS resource are shared except running time-frequency resource Other CSI-RS resource parameters outside positional information；

The processor is specifically used for described in first CSI-RS resource and second unpaired message instruction Second CSI-RS resource is determined as what is configured by the serving BS.

It is described to connect in the 4th kind of possible implementation with reference to the third possible implementation of the tenth one side Receive implement body to be used in the subframe identical with the 2nd DCI signalings, receive the DMRS that the serving BS is sent；

The processor is specifically used at least two CSI-RS resource indicated by the 2nd DCI signalings and institute State the DMRS sent in subframe and be determined as the serving BS configuration.

12nd aspect, there is provided a kind of UE, including：

Receiver, for receiving the first Downlink Control Information DCI signalings of serving BS transmission, the first DCI signalings Including the first configured information, sent when different when first configured information is used to indicate to send the first demodulated reference signal DMRS Physical Downlink Shared Channel PDSCH；And receive the first DMRS that the serving BS is sent, the first DMRS with PDSCH is sent when different；

Processor, for caching the first DCI signalings and the first DMRS.

In the first possible implementation of the 12nd aspect,

The receiver is additionally operable to receive the 3rd PDSCH that the serving BS sends and same with the 3rd PDSCH When the 3rd DMRS that sends；

The processor is additionally operable to demodulate the 3rd PDSCH according to the 3rd DMRS.

It is described to connect in second of possible implementation with reference to the first possible implementation of the 12nd aspect Device is received to be additionally operable to：The the first virtual subdistrict number parameter for being used to generate the first DMRS that the serving BS is sent is received, And for generating the second virtual subdistrict number parameter of the 3rd DMRS, first virtual subdistrict number parameter and described Second virtual subdistrict number parameter is identical；

The processor is additionally operable to according to identical first virtual subdistrict number parameter and second virtual subdistrict Number parameter knows that the first DMRS and the 3rd DMRS is that the serving BS configures.

It is described to connect in the third possible implementation with reference to second of possible implementation of the 12nd aspect Device is received to be additionally operable to：The radio resource control RRC signaling that the serving BS is sent is received, the RRC signaling includes the second finger Show information, second configured information is used to indicate that the first DMRS and the 3rd DMRS is the serving BS configuration 's；Alternatively, further including the second configured information in the first DCI signalings, second configured information is used to indicate described first DMRS and the 3rd DMRS is the serving BS configuration；Alternatively, receive the 2nd DCI letters that the serving BS is sent Order, the 2nd DCI signalings include the second configured information, and second configured information is used to indicate the first DMRS and institute It is the serving BS configuration to state the 3rd DMRS；

The processor is additionally operable to know that the first DMRS and the 3rd DMRS are according to second configured information The serving BS configuration.

Through the above technical solutions, same serving BS configures at least two CSI-RS moneys of co-sited for same UE Source, and at least two CSI-RS resource and DMRS co-sited, that is, the PDSCH co-sited with the serving BS for UE scheduling, Therefore, when UE carries out Time and Frequency Synchronization using at least two CSI-RS resource of the co-sited, serving BS can be synchronized to, is carried The high accuracy of Time and Frequency Synchronization, and then improve demodulation performance；Alternatively, serving BS is not sent at the same time for UE configurations with PDSCH DMRS, UE can according to this not with PDSCH at the same time send DMRS carry out Time and Frequency Synchronization, since this does not send out at the same time with PDSCH The DMRS sent is also that the serving BS that PDSCH is dispatched for UE is sent, and can be synchronized to serving BS, improve Time and Frequency Synchronization Accuracy, and then improve demodulation performance.

Brief description of the drawings

To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment Attached drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the present invention, for this For the those of ordinary skill of field, without having to pay creative labor, other can also be obtained according to these attached drawings Attached drawing.

Fig. 1 is the flow diagram of one embodiment of method of present invention configuration pilot signal；

Fig. 2 is the running time-frequency resource schematic diagram shared by CSI-RS sequences in the embodiment of the present invention；

Fig. 3 is the running time-frequency resource schematic diagram shared by DMRS and PDSCH in the embodiment of the present invention；

Fig. 4 is shared by CSI-RS sequences corresponding when three CSI-RS resource of co-sited are configured in the embodiment of the present invention Running time-frequency resource schematic diagram；

Fig. 5 is that the positional information configured in the embodiment of the present invention corresponding to two CSI-RS resource of co-sited is adjacent at two Schematic diagram during subframe；

Fig. 6 is the flow diagram of another embodiment of method of present invention configuration pilot signal；

Fig. 7 is the corresponding system schematics of Fig. 6；

Fig. 8 is the flow diagram of another embodiment of method of present invention configuration pilot signal；

Fig. 9 is the flow diagram of another embodiment of method of present invention configuration pilot signal；

Figure 10 is the structure diagram of one embodiment of serving BS of the present invention；

Figure 11 is the structure diagram of another embodiment of serving BS of the present invention；

Figure 12 is the structure diagram of mono- embodiments of UE of the present invention；

Figure 13 is the structure diagram of another embodiments of UE of the present invention；

Figure 14 is the structure diagram of one embodiment of serving BS of the present invention；

Figure 15 is the structure diagram of another embodiment of serving BS of the present invention；

Figure 16 is the structure diagram of mono- embodiments of UE of the present invention；

Figure 17 is the structure diagram of another embodiments of UE of the present invention.

Embodiment

To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is Part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art All other embodiments obtained without making creative work, belong to the scope of protection of the invention.

Under CoMP scenes, since the UE CRS sequences received are either to be superimposed sequence from macro base station, when UE's When serving BS is RRH, it is inappropriate to carry out Time and Frequency Synchronization with CRS sequences.For this reason, in the embodiment of the present invention, the first side Formula is at least two CSI-RS resource (CSI-RS Resource) that serving BS configures co-sited for UE, and the second way is Serving BS configures the DMRS resources not sent at the same time with PDSCH for UE.Optionally, UE can be according at least two of the co-sited CSI-RS resource, or not with PDSCH at the same time send DMRS resources carry out Time and Frequency Synchronization.Particular content may refer to subsequently Embodiment.

Two pilot resources co-sited (quasi co-located) in the embodiment of the present invention, refer to different pilot resources And its corresponding pilot frequency sequence is same serving BS configuration and sends.Alternatively, UE can be from the pilot tone received Another pilot signal of co-sited received is inferred in the large scale characteristic (Large-scale properties) of signal Large scale characteristic.Large scale characteristic includes part or all of in following items：Delay spread (Delay spread), it is how general Strangle extension (Doppler spread), frequency shift (FS) (Frequency shift), mean receiving power (Average Received power), receive timing (Received Timing).

Serving BS (serving base station) in the embodiment of the present invention can be base station (NodeB, NB), drill Into base station (eNB, evolved NodeB), macro base station (Macro eNB), less radio-frequency head (Remote Radio Head, RRH), femto base station (Pico eNodeB), Home eNodeB (Home eNB) or LTE hot spots and indoor enhancing (LTE Hotspot And Indoor Enhancements, LTE-Hi) the various websites that wireless service can be provided for UE such as small base station.

Fig. 1 is the flow diagram of one embodiment of method of present invention configuration pilot signal, including：

Step 11：One serving BS configures at least two CSI-RS resource for a UE, and notifies described in the UE extremely Few two CSI-RS resource are configured by the serving BS；

Serving BS can send CSI-RS sequences, UE after CSI-RS resource is configured for UE according to the CSI-RS resource Time and Frequency Synchronization etc. can be carried out according to CSI-RS sequences.

In the embodiment of the present invention, at least two CSI-RS resource is referred to as by what the serving BS configured At least two CSI-RS resource is co-sited.

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

Antenna port configuration information (antennaPortsCount-r11)：The port letter of the CSI-RS of main instruction configuration Breath, it is optional to be configured with 1 antenna port, 2 antenna ports, 4 antenna ports or 8 antenna ports；

Running time-frequency resource positional information (resourceConfig-r11)：Time-frequency moneys of the main instruction CSI-RS in a RB Source location information；

Subframe configuration information (subframeConfig-r11)：In the cycle of main instruction CSI-RS and a cycle at that time Domain resource location information；

Power information (p-C-r11)：The Pc information of main instruction CSI-RS.

Initiation parameter (X-r11)：It is mainly used for the initialization ginseng of the pseudo random sequence generator of CSI-RS sequences generation Several calculating, scope are [0,503].

The transmission bandwidth of CSI-RS is consistent with the bandwidth of serving cell on frequency domain, it is not necessary to extra definition or letter Order notice.

It should be understood that in the present embodiment, the title for the instruction parameters that CSI-RS resource includes can also be to represent Other titles of said function.

In the embodiment of the present invention, (namely same serving BS configuration) at least two CSI-RS resource of the co-sited Can be specifically non-zero power CSI-RS resource (Non zero power CSI-RS Resource, NZP CSI-RS Resource)。

Step 12：The serving BS sends DMRS to the UE, and notifies that DMRS described in the UE is by the service Base station configuration.

Wherein, the DMRS and PDSCH of the present embodiment are sent in a subframe at the same time, which is serving BS The PDSCH of UE is scheduled to, UE is demodulated the PDSCH according to the DMRS.

In the embodiment of the present invention, the DMRS be by the serving BS configure be referred to as the DMRS with it is described At least two CSI-RS resource are co-sited.

Since DMRS and PDSCH are also co-sited, as DMRS and at least two CSI-RS resource co-sited, Indicate that the PDSCH and at least two CSI-RS resource co-sited, and then UE is carried out using at least two CSI-RS resource The website for issuing its PDSCH can be synchronized to during Time and Frequency Synchronization, ensures demodulation performance.

In LTE/LTE-A, an antenna port corresponds to a running time-frequency resource lattice (Resource Grid), a resource Elementary cell in lattice is called resource unit (Resource Element, RE), each RE can uniquely use (k, l) Represent, wherein k represents the sequence number of subcarrier in frequency domain, and l represents time domain orthogonal frequency division multiplexing (Orthogonal in a subframe Frequency Division Multiple, OFDM) symbol sequence number.One Physical Resource Block (Physical Resource Block, PRB) size be continuous 14 OFDM symbols in time domain, continuous 12 subcarriers on frequency domain.Such as It is that the CSI-RS sequences that CSI-RS resource is sent on each antenna port when configuring 1 antenna or 2 antenna port exist shown in Fig. 2 The schematic diagram for the RE that can be taken in one PRB.

When configuring 1 antenna port, a CSI-RS resource corresponding CSI- in each PRB on antenna port Port 15 RS sequences are sent on 2 RE, correspond to the identical time domain of one group of frequency domain adjacent (0,1).When configuring 2 antenna port, a CSI- RS resources on antenna port Port 15 and Port 16 on 2 identical RE send out in each PRB by corresponding CSI-RS sequences Send, correspond to the identical time domain of one group of frequency domain adjacent (0,1), the CSI-RS sequences sent on 2 antenna ports are answered in a manner of CDM With.Referring to Fig. 2, for the scene of 2 ports, running time-frequency resource position that the corresponding CSI-RS sequences of each CSI-RS resource can take It is equipped with 20 kinds of possibility.When configuring 4 antenna port, a CSI-RS resource is on antenna port Port 15 and Port 16 with CDM The mode of multiplexing takes a group echo as the identical time domain of frequency domain adjacent (0,1), on antenna port Port 17 and Port 18 A group echo is taken in a manner of CDM is multiplexed as the identical time domain of frequency domain adjacent (2,3).When configuring 8 antenna port, a CSI- RS resources take a group echo as the identical time domain phase of frequency domain on antenna port Port 15 and Port 16 in a manner of CDM is multiplexed Adjacent (0,1), when it is that frequency domain is identical to take a group echo on antenna port Port 17 and Port 18 in a manner of CDM is multiplexed Domain adjacent (2,3), a group echo is taken as frequency domain phase on antenna port Port 19 and Port 20 in a manner of CDM is multiplexed (4,5) adjacent with time domain, a group echo is taken as frequency on antenna port Port 21 and Port 22 in a manner of CDM is multiplexed The identical time domain in domain adjacent (6,7).

In the prior art, under the scene that eNB configures a 2 antenna port CSI-RS resource, eNB can at above-mentioned 20 kinds A kind of, the transmission CSI-RS sequences on the position of the selection are selected in the position of energy.

And in the present embodiment, for a UE, same website configures at least two CSI-RS resource, Ke Yigen for it Corresponding CSI-RS sequences are sent according at least two CSI-RS resource of the configuration, for example, with the running time-frequency resource of filling in Fig. 2 Represent running time-frequency resource of the site configuration shared by the corresponding CSI-RS sequences of two CSI-RS resource of same UE, should Website sends corresponding CSI-RS sequences on the running time-frequency resource of the configuration and gives the UE, afterwards UE can according to receive this two The corresponding CSI-RS sequences of a CSI-RS resource carry out Time and Frequency Synchronization.

Serving BS can send DMRS at the same time when sending PDSCH to UE, UE according to the DMRS to the PDSCH of reception into Row demodulation.As shown in figure 3, the running time-frequency resource shared by illustrating DMRS and PDSCH with different filling modes respectively, Ke Yili Solution, on the possible time-frequency location of CSI-RS sequences shown in Fig. 2 if be not used in send CSI-RS when be also for sending out Sending PDSCH, Fig. 3 is exemplified by sending CSI-RS sequences in the filling position shown in Fig. 2, then remaining possible position will be used In transmission PDSCH.

In the present embodiment, network side will indicate the CSI-RS resource with DMRS co-sited, in the present embodiment, due to DMRS and PDSCH is sent together, therefore the website for sending DMRS is the serving BS of UE, and UE needs to be synchronized to the serving BS, therefore, When CSI-RS and DMRS come from same website, indicate that the CSI-RS also comes from serving BS, CSI-RS can be used for Time and Frequency Synchronization, and serving BS can be synchronized to.

Further, since at least two CSI-RS resource comes from same base station, serving BS only need to be indicated at least wherein A CSI-RS resource and DMRS come from same website, it is possible to determine that at least two CSI-RS resource both is from taking Business base station, and can reduce indication bit expense when only indicating one.

Optionally, at least two above-mentioned CSI-RS resource are that same eNB is sent, what same Macro was sent, together What one RRH was sent, what same Pico was sent, what same Home eNB were sent, alternatively, the small base station hairs of same LTE-Hi Send.

Optionally, at least two above-mentioned CSI-RS resource at least two CSI-RS resource be mapped to it is different orthogonal Frequency division multiplexing (Orthogonal Frequency Division Multiple, OFDM) symbol.For example, with reference to Fig. 4, base is serviced Stand and be configured with 3 CSI-RS resource for same UE, the CSI-RS sequences of 3 CSI-RS resource instructions are illustrated with filling mode The shared running time-frequency resource position of row, from fig. 4, it can be seen that these running time-frequency resource positions are located in different OFDM symbols, That is these three CSI-RS resource are respectively mapped to different OFDM symbols.

Since the time domain interval between different CSI-RS resource can influence the precision of offset estimation, usual time domain interval is bigger Precision is higher, therefore, by the way that above-mentioned CSI-RS resource is separated in time domain, can improve the precision of offset estimation, and then Meet the requirement of Frequency Synchronization tracking.

Optionally, the subframe indicated by subframe configuration information that at least two above-mentioned CSI-RS resource include is same Subframe, or two subframes, for example, the CSI-RS resource shown in Fig. 2 or Fig. 4 is the same subframe of instruction, alternatively, referring to Fig. 5, With two CSI-RS resource, and exemplified by indicating two adjacent subframes, sub-frame configuration letter that these CSI-RS resource each include The indicated subframe of breath can also belong to two adjacent subframes.

Optionally, if multiple serving BSs configure pilot signal for same UE, each serving BS can be similar The mode of above-mentioned RRH is handled, for example, eNB is also handled according to the processing mode of above-mentioned RRH.

Optionally, when multiple serving BSs dispatch PDSCH for same UE, can be referred to by DCI signalings or RRC signaling Show which CSI-RS resource and which DMRS are co-sited.

Corresponding, UE sides can perform following steps：

One UE knows at least two CSI-RS resource of a serving BS configuration, and at least two CSI-RS Resource is configured by the serving BS；

The UE receives the DMRS that the serving BS is sent, and knows that the DMRS is configured by the serving BS 's.

The present embodiment configures at least two CSI-RS resource by same serving BS for same UE, and notifies UEDMRS is also what the serving BS configured, can cause UE according at least two CSI-RS resource Time and Frequency Synchronization to accurately Website, improves the accuracy of Time and Frequency Synchronization, and then improves demodulation performance.

Fig. 6 is the flow diagram of another embodiment of method of present invention configuration pilot signal, and Fig. 7 is the corresponding systems of Fig. 6 Unite schematic diagram, in Fig. 7 by taking the CoMP scenes that eNB and RRH is formed as an example.The present embodiment is by taking serving BS is RRH as an example.This implementation Example includes：

Step 61：RRH sends RRC signaling to UE, which includes at least two CSI-RS resource, to indicate It is co-sited to state at least two CSI-RS resource.

, can be in the radio resource control messages unit (Radio of RRC signaling for the notice of CSI-RS resource Resource control information elements) CSI-RS configuration information unit (CSI-RS-Config Information elements) in configuration CSI-RS resource, each CSI-RS resource includes at least five following CSI-RS Resource parameters：

Power information (p-C-r11)：The Pc information of main instruction CSI-RS.

In the embodiment of the present invention, at least two CSI-RS resource of the co-sited can be specifically non-zero power CSI-RS moneys Source (Non zero power CSI-RS Resource, NZP CSI-RS Resource).

Can be in the following way to the CSI-RS resource of UE notice co-sited：

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

One CSI-RS configuration information unit, the CSI-RS configuration information unit include at least two CSI-RS Resource, so that the CSI-RS resource that first RRC signaling includes is determined as being configured by the serving BS by the UE 's；

For example, at least two CSI-RS resource of configuration be expressed as CSI-RS resource~1 and CSI-RS resource~ 2, the information that CSI-RS resource~1 includes for antennaPortsCount-r11~1, resourceConfig-r11~1, SubframeConfig-r11~1, p-C-r11~1 and X-r11~1, and the information that CSI-RS resource~2 include is AntennaPortsCount-r11~2, resourceConfig-r11~2, subframeConfig-r11~2, p-C-r11 ~2 and X-r11~2, then can CSI-RS configuration information unit include antennaPortsCount-r11~1, ResourceConfig-r11~1, subframeConfig-r11~1, p-C-r11~1 and X-r11~1, and AntennaPortsCount-r11~2, resourceConfig-r11~2, subframeConfig-r11~2, p-C-r11 ~2 and X-r11~2.After UE receives the RRC signaling comprising the CSI-RS configuration information unit, it is possible to determine CSI- RS resource~1 and CSI-RS resource~2 are co-sited.

Alternatively,

At least two CSI-RS configuration information units, each CSI- at least two CSI-RS configuration informations unit RS configuration informations unit includes a CSI-RS resource at least two CSI-RS resource, and the first configured information, and First configured information at least two CSI-RS configuration informations unit is identical, so that the UE is according to The first identical configured information, is determined as what is configured by the serving BS by least two CSI-RS resource；

By taking two CSI-RS resource of above-mentioned configuration as an example, then it can include two CSI-RS in RRC signaling and match somebody with somebody confidence Interest statement member, a CSI-RS configuration information unit include antennaPortsCount-r11~1, resourceConfig- R11~1, subframeConfig-r11~1, p-C-r11~1 and X-r11~1 and co-sited configured information~1, another CSI-RS configuration information unit include antennaPortsCount-r11~2, resourceConfig-r11~2, SubframeConfig-r11~2, p-C-r11~2 and X-r11~2 and co-sited configured information~2, wherein, co-sited instruction letter Breath~1 and co-sited configured information~2 are identical, such as are all 1.Wherein, the value of co-sited configured information can be 0,1,2 or 3, when For 0 when show multiple CSI-RS resource of no co-sited, when the corresponding co-sited configured information of at least two CSI-RS resource is identical And co-sited configured information it is non-zero when, show these CSI-RS resource co-sited.

Alternatively,

By taking two CSI-RS resource of above-mentioned configuration as an example, then it can include a CSI-RS in RRC signaling and match somebody with somebody confidence Interest statement member, the CSI-RS configuration information unit include antennaPortsCount-r11~1, resourceConfig-r11 ~1, subframeConfig-r11~1, p-C-r11~1 and X-r11~1 and a pairing configured information, with 2 antenna ends Exemplified by mouthful, after a CSI-RS resource is determined, the running time-frequency resource position that another CSI-RS resource includes in a PRB is believed Breath is considering the Time and Frequency Synchronization at UE ends with the running time-frequency resource positional information that a definite CSI-RS resource includes in a PRB There are 8 kinds of preferably possible configurations during tracking performance, then can be represented with the pairing configured information of 3 bits, for example, determining The running time-frequency resource positional information that includes in a PRB of a CSI-RS resource be expressed as (k'₁=11, l'₁=2), n_s,1= 1, wherein, k'₁Represent the information for the running time-frequency resource positional information sub-carriers that the CSI-RS resource includes in a PRB, k'₁ =0,1,2...11；l'₁Represent in the running time-frequency resource positional information that the CSI-RS resource includes in a time slot of a PRB The information of OFDM symbol, l'₁=0,1,2 ..., 6；n_s,1=0,1 represents time slot 0 or time slot 1 respectively, then can use 000 Indicate running time-frequency resource position (k'₁=2, l'₁=5), n_s,1=0, with 001 instruction running time-frequency resource position (k'₁=3, l'₁=5), n_s,1=0, remaining position can use similar fashion to indicate.For another example

It is assumed that (k'₁,l'₁),n_s,1Represent running time-frequency resource positional information of the CSI-RS resource in a PRB, l'₁= 5, n_s,1=0, or 1, k'₁=2,3,8, or 9；So (k'₂,l'₂),n_s,2Can be

Work as l'₂=2, n_s,2When=1, k'₂=(k'₁-2),(k'₁-1),k'₁,(k'₁+1),(k'₁+2)；Or

Work as n_s,1≠n_s,2When, k'₂=(k'₁-1),k'₁,(k'₁+1)。

When considering the Time and Frequency Synchronization tracking performance at UE ends, second positional information is there are 8 kinds of above-mentioned possibility, therefore, Second positional information can be indicated with the pairing configured information of 3 bits, therefore, under these conditions, it is only necessary to which 3 bits are just It can indicate two CSI-RS resource of co-sited.

Step 62：RRH sends DMRS and PDSCH to UE, and sends Downlink Control Information (Downlink Control to UE Information, DCI) signaling or RRC signaling, the DCI signalings or RRC signaling include configured information, and which is used for Indicate that at least one CSI-RS resource and DMRS are co-sited in described at least two CSI-RS resource, to notify the UE institutes The CSI-RS resource that DMRS is stated with described at least two is co-sited.

RRC signaling in this step can be same RRC signaling or difference with the RRC signaling in step 61 RRC signaling.

That is, it is optional,

By to the UE send the first DCI of Downlink Control Information signal the UE described in DMRS be by the service Base station configuration, wherein, the first DCI signalings include the second configured information, and second configured information is used to indicate described At least one CSI-RS resource is configured by the serving BS in DMRS and at least two CSI-RS resource, with to institute State UE and notify that the DMRS and at least two CSI-RS resource are that the serving BS configures；Or

Since these CSI-RS resource are co-sited, when instruction DMRS and wherein at least one CSI-RS resource are co-sited When, it is possible to determine that these CSI-RS resource and DMRS are co-sited.

The present embodiment is sent by RRC signaling and indicates the CSI-RS resource of co-sited, and is believed by DCI signalings or RRC Order sends and indicates the DMRS and CSI-RS resource of co-sited, can carry out Time and Frequency Synchronization according to the CSI-RS resource of co-sited, improve Accuracy of synchronism.

Fig. 8 is the flow diagram of another embodiment of method of present invention configuration pilot signal, and the present embodiment is still with RRH Exemplified by serving BS, the present embodiment includes：

Step 81：RRH sends RRC signaling to UE, which includes the first CSI-RS resource, and is sent to the UE DCI signalings, the DCI signalings include at least one unpaired message, and each unpaired message is used to indicate second in a PRB CSI-RS resource relative to the first CSI-RS resource running time-frequency resource positional information, alternatively, each second unpaired message is used In the running time-frequency resource positional information for indicating second CSI-RS resource, first CSI-RS resource is described at least two Any one CSI-RS resource in CSI-RS resource, second CSI-RS resource are in described at least two CSI-RS resource Any one CSI-RS resource different from first CSI-RS resource, first CSI-RS resource and the 2nd CSI- Other CSI-RS resource parameters of RS resource sharings in addition to running time-frequency resource positional information.

In embodiments of the present invention, each CSI-RS resource includes at least five following CSI-RS resource parameters：

Power information (p-C-r11)：The Pc information of main instruction CSI-RS.

As set forth above, it is possible to a CSI-RS resource is indicated by the CSI-RS configuration information unit in a RRC signaling, At least another CSI-RS resource matched by the configured CSI-RS resource of the instruction of DCI signalings and RRC, is matched somebody with somebody with being embodied as UE Put multiple CSI-RS resource.

Unlike a upper embodiment, the present embodiment is to indicate which CSI-RS resource is co-sited by DCI signalings.

Exemplified by configuring two CSI-RS resource and be sent using 2 terminal port antennaes.

Running time-frequency resource positional information included by the CSI-RS resource of two same RB can use (k' respectively₁,l'₁), n_s,1(k'₂,l'₂),n_s,2Represent, wherein, k'₁And k'₂Represent that a CSI-RS resource is included in a PRB respectively The information of running time-frequency resource positional information sub-carriers, k'₁,k'₂=0,1,2...11；l'₁And l'₂A CSI-RS is represented respectively The information of OFDM symbol, l' in resource running time-frequency resource positional information included in a time slot of a PRB₁,l'₂=0, 1,2,...,6；n_s,1,n_s,2=0,1 represents time slot 0 or time slot 1 respectively.

The running time-frequency resource positional information that one CSI-RS resource includes in a PRB can use CSI-RS configuration information list ResourceConfig-r11 instructions in member, specifically, can use (k'₁,l'₁),n_s,1Represent.

After determining first positional information in fashion described above, second positional information, example can be indicated with 3bit again Such as,

Work as n_s,1≠n_s,2When, k'₂=(k '₁-1),k'₁,(k'₁+1)。

When considering the Time and Frequency Synchronization tracking performance at UE ends, second positional information is there are 8 kinds of above-mentioned possibility, therefore, Second positional information can be indicated with three bits, therefore, under these conditions, it is only necessary to which 3 bits can indicate co-sited Two CSI-RS resource.

Step 82：RRH sends DMRS in the subframe identical with the DCI signalings, to the UE so that the UE is by institute Described at least two CSI-RS resource for stating the co-sited indicated by DCI signalings is determined as with the DMRS sent in same subframe Co-sited.

It is unlike the embodiments above, also need to be total to CSI-RS resource using signaling instruction DMRS in a upper embodiment Stand, in the present embodiment, UE can give tacit consent to the DMRS that will be sent in same subframe and CSI-RS configuration information unit and DCI signalings At least two CSI-RS resource of joint instructions is determined as co-sited.

Especially, if multiple serving BSs configure pilot signal for same UE, each serving BS can be similar The mode of above-mentioned RRH is handled, in this case it is necessary to be matched somebody with somebody using DCI signalings or RRC signaling instruction DMRS and CSI-RS The CSI-RS resource co-sited of information unit instruction is put, so as to obtain the CSI-RS resource co-sited of DMRS and at least two.

The present embodiment can determine UE same by RRC signaling and the CSI-RS resource of DCI signaling joint instructions co-sited DMRS in a subframe is co-sited with the CSI-RS resource indicated by DCI signalings, can according to the CSI-RS resource of co-sited into Row is synchronous, improves accuracy of synchronism.

Fig. 9 is the flow diagram of another embodiment of method of present invention configuration pilot signal, including：

Step 91：Serving BS sends the first DCI signalings to the first UE, and the first DCI signalings include the first instruction and believe Breath, PDSCH is sent when different when first configured information is used to indicate to send a DMRS；

Step 92：The serving BS sends the first DMRS to the first UE and does not send PDSCH.

Optionally, the first DCI signalings be serving BS after the first UE access is detected, transmission；Alternatively,

First DCI signalings are sent after serving BS receives the uplink signaling of the first UE transmissions, that is, by first UE triggerings are sent.

Optionally, after often sending once the first DCI signalings, the first DMRS described in periodicity sending and do not send described PDSCH；Alternatively, often sending once the first DCI signalings, send once the first DMRS and do not send the PDSCH.

Can include the configured information of 1 bit in first DCI signalings, for example, the configured information of 1 bit for " 1 " or When " 0 ", represent to send PDSCH when only sending DMRS differences respectively, or PDSCH is sent while DMRS is sent.

In the embodiment of the present invention, DMRS and PDSCH send refer to that both are sent out the diverse location in same PRB at the same time Send, send and refer in the PRB for sending DMRS without transmission PDSCH when both are different.

Optionally, this method can also include：The serving BS on the corresponding running time-frequency resources of the first DMRS to 2nd UE sends the 2nd DMRS, while the serving BS sends the 2nd DMRS corresponding second to the 2nd UE PDSCH.For example, with reference to Fig. 3, at the time-frequency location shared by DMRS, the first DMRS is sent to the first UE respectively, and to the Two UE send the 2nd DMRS, while at the corresponding time-frequency locations of PDSCH, the 2nd PDSCH is sent to the 2nd UE.

Optionally, this method can also include：The serving BS to the first UE send the 3rd PDSCH and with institute Corresponding 3rd DMRS of the 3rd PDSCH are stated, so that the first UE demodulates the 3rd PDSCH according to the 3rd DMRS.Example Such as, serving BS only sends DMRS without sending PDSCH in the first PRB, and DMRS transmissions had both been sent in the 2nd PRB PDSCH。

UE is when decoding DMRS, it is necessary to generate DMRS sequences, pseudo-random sequence generation using pseudo random sequence generator The calculating of the initiation parameter of device and serving BS number (Virtual Cell ID) parameter for a virtual subdistrict of UE configurations It is related, it is assumed that the virtual subdistrict number parameter is represented with Y.During the difference that so same serving BS sends same UE with The DMRS of PDSCH transmissions and at the same time Y corresponding with the DMRS that PDSCH is sent are configurable to identical, that is to say, that

Optionally, before the serving BS sends the first DMRS and does not send the PDSCH to the first UE, Alternatively, the serving BS sends the first DMRS to the first UE and do not send in the PDSCH, the method is also wrapped Include：The the first virtual subdistrict number parameter for being used for generating the first DMRS is sent to the first UE；

Wherein, first virtual subdistrict number parameter is identical with second virtual subdistrict number parameter, the UE roots According to the first identical virtual subdistrict number parameter and the second virtual subdistrict number parameter know the first DMRS with it is described 3rd DMRS is the serving BS configuration.

If during the difference that same serving BS sends same UE with PDSCH send DMRS and at the same time with PDSCH send the corresponding Y of DMRS be configured to it is different, then when can indicate different in DCI signalings with PDSCH send DMRS and at the same time the co-sited information with the PDSCH DMRS sent.

That is, the serving BS sends radio resource control RRC signaling, the RRC signaling to the first UE Include the second configured information, second configured information is used to indicate that the first DMRS and the 3rd DMRS is the clothes It is engaged in what base station configured, so that the UE knows that the first DMRS and the 3rd DMRS is institute according to second configured information State serving BS configuration；Alternatively,

The serving BS sends the 2nd DCI signalings to the first UE, and the 2nd DCI signalings include the second instruction Information, second configured information are used to indicate that the first DMRS and the 3rd DMRS is the serving BS configuration, So that the UE knows that the first DMRS and the 3rd DMRS is that the serving BS is matched somebody with somebody according to second configured information Put.

Optionally, when multiple serving BSs service for same UE, and each serving BS is respectively that the UE is sent not When at the same time with the PDSCH DMRS sent the and DMRS sent at the same time with PDSCH, it is different which can be indicated in the following way When with PDSCH send DMRS (being abbreviated as DMRS_1) with which at the same time with PDSCH transmission DMRS (being abbreviated as DMRS_2) be Co-sited：

Mode one：Each serving BS configures identical virtual subdistrict numbering ginseng for the DMRS_1 and DMRS_2 itself sent Number Y, and the Y of different serving BS configurations is different, therefore, UE can determine which DMRS_1 and which DMRS_2 is altogether according to Y Stand；Alternatively,

Mode two：Each serving BS includes configured information in the DCI signalings or RRC signaling for being sent to UE, this refers to Show that information is used to indicate which DMRS_1 and which DMRS_2 are co-sited.For example, serving BS is when sending DCI signalings, no Only include the configured information for indicating DMRS_1 (DMRS sent when different with PDSCH), further include for indicating with being somebody's turn to do The configured information of the DMRS_2 of DMRS_1 co-sited.

Correspondingly, UE sides can perform following steps：

UE receives the first DCI signalings that serving BS is sent, and the first DCI signalings include the first configured information, this One configured information sends PDSCH when different when being used to indicate to send a DMRS in setting time；

The UE receives the first DMRS, the first DMRS that the serving BS is sent in the setting time Sent when different from PDSCH.

The DMRS sent when the present embodiment to UE by sending different together with PDSCH, can cause UE according to the DMRS Carry out Time and Frequency Synchronization, it is ensured that UE Time and Frequency Synchronizations to serving BS, improve the accuracy of Time and Frequency Synchronization, and then improve solution tonality Energy.

Figure 10 is the structure diagram of one embodiment of serving BS of the present invention, which includes configuration module 101 With sending module 102；Configuration module 101 configures at least two channel state information reference signals CSI- for a user equipment (UE) RS resources；Sending module 102 is used to notify that at least two CSI-RS resource are configured by the serving BS described in the UE； And demodulated reference signal DMRS is sent to the UE, and notify that DMRS is configured by the serving BS described in the UE.

Optionally,

The subframe indicated by subframe configuration information that at least two CSI-RS resource includes is a subframe, or two A subframe；Alternatively,

In at least two CSI-RS resource of the configuration module configuration, at least two CSI-RS resource are mapped to Different orthogonal frequency division multiplex OFDM symbols.

Optionally,

The sending module is specifically used for notify configuration module described in the UE to configure as follows described at least two A CSI-RS resource is configured by the serving BS：

Optionally,

The sending module is specifically used for sending demodulated reference signal DMRS to the UE as follows, and described in notice DMRS described in UE is configured by the serving BS：Second sending module, for by sending the first downlink control to the UE Information DCI processed signals DMRS described in the UE and is configured by the serving BS, wherein, the first DCI signaling bags The second configured information is included, second configured information is used to indicate in the DMRS and at least two CSI-RS resource at least One CSI-RS resource is configured by the serving BS, to notify the DMRS and at least two CSI- to the UE RS resources are the serving BS configurations；Or

Optionally,

The sending module is specifically used for notify configuration module described in the UE to configure as follows described at least two A CSI-RS resource is configured by the serving BS：RRC signaling is sent to the UE, wherein, the RRC signaling includes First CSI-RS resource, first CSI-RS resource are any one CSI-RS moneys at least two CSI-RS resource Source；

Optionally,

The sending module is specifically used for sending demodulated reference signal DMRS to the UE as follows, and described in notice DMRS described in UE is configured by the serving BS：In the subframe identical with the 2nd DCI signalings, sent to the UE The DMRS so that the UE is by least two CSI-RS resource indicated by the 2nd DCI signalings and the subframe The DMRS of interior transmission is configured by the serving BS.

The present embodiment by the CSI-RS resource for same UE configuration at least two, and indicate UE this at least two CSI-RS resource comes from same website with DMRS, and UE can be caused to be arrived according at least two CSI-RS resource Time and Frequency Synchronization Accurate website, improves the accuracy of Time and Frequency Synchronization, and then improves demodulation performance.

Figure 11 is the structure diagram of another embodiment of serving BS of the present invention, which includes first and send 111 and second sending module 112 of module；First sending module 111 is used to send the control of the first downlink to the first user equipment (UE) Information DCI signalings, the first DCI signalings include the first configured information, and first configured information is used to indicate to send first Physical Downlink Shared Channel PDSCH is sent when different during demodulated reference signal DMRS；Second sending module 112 is used for described the One UE sends the first DMRS and does not send the PDSCH.

Optionally,

First sending module is specifically used for：

Optionally,

Second sending module is specifically used for：

Optionally, the serving BS

Further include：

3rd sending module, for sending the 2nd DMRS to the 2nd UE on the corresponding running time-frequency resources of the first DMRS, The serving BS sends corresponding 2nd PDSCH of the 2nd DMRS to the 2nd UE at the same time.

Optionally, the serving BS

Further include：

Optionally, the serving BS

Further include：

Optionally, the second configured information is further included in the first DCI signalings, second configured information is used to indicate institute It is the serving BS configuration to state the first DMRS and the 3rd DMRS, so that the UE is obtained according to second configured information It is the serving BS configuration to know the first DMRS and the 3rd DMRS；Alternatively, the serving BS further includes：

Figure 12 is the structure diagram of mono- embodiments of UE of the present invention, which knows that module 121 and second obtains including first Know module 122；First knows that module 121 is used at least two channel condition informations reference letter for knowing a serving BS configuration Number CSI-RS resource, and at least two CSI-RS resource are configured by the serving BS；Second knows module 122 The demodulated reference signal DMRS sent for receiving the serving BS, and know that the DMRS is configured by the serving BS 's.

Optionally,

Described first knows that module is specifically used for：

Optionally,

Described second knows that module is specifically used for：

The second RRC signaling that the serving BS is sent is received, second RRC signaling includes the second configured information, institute The second configured information is stated to be used to indicate that at least one CSI-RS resource is in the DMRS and at least two CSI-RS resource Configured by the serving BS, the DMRS and at least two CSI-RS resource are known according to second RRC signaling It is that the serving BS configures..

Optionally,

Described first knows that module is specifically used for：

Optionally,

Described second knows that module is specifically used for：

Figure 13 is the structure diagram of another embodiments of UE of the present invention, which includes the first receiving module 131 and second Receiving module 132；First receiving module 131 is used for the first Downlink Control Information DCI signalings for receiving serving BS transmission, described First DCI signalings include the first configured information, and first configured information is used to indicate to send the first demodulated reference signal DMRS When it is different when send Physical Downlink Shared Channel PDSCH；Second receiving module 132 is used to receive the institute that the serving BS is sent State the first DMRS, the first DMRS is sent when different from PDSCH.

Optionally, which further includes：

Demodulation module, for demodulating the 3rd PDSCH according to the 3rd DMRS.

Optionally, which further includes：

Figure 14 is the structure diagram of another embodiment of serving BS of the present invention, which includes processor 141 With transmitter 142；Processor 141 is used to configure at least two channel state information reference signals CSI- for a user equipment (UE) RS resources；Transmitter 142 is used at least two CSI-RS resource being sent to the UE, and notifies described in the UE at least Two CSI-RS resource are configured by the serving BS, and send demodulated reference signal DMRS to the UE, and are notified DMRS is configured by the serving BS described in the UE.

Optionally,

The transmitter is specifically used for：

Optionally,

The transmitter also particularly useful for：

Optionally,

The transmitter is specifically used for：

Optionally,

The transmitter also particularly useful for：

In the present embodiment, transmitter can be specially transceiver, can also specifically be realized using antenna, processor can be adopted Realized with DSP, FPGA etc..It can also include memory, data/address bus, controlling bus, address bus etc. in the present embodiment.

Figure 15 is the structure diagram of another embodiment of serving BS of the present invention, which includes processor 151 With transmitter 152；Processor 151 is used to generate the first Downlink Control Information DCI signalings and the first demodulated reference signal DMRS； Transmitter 152 is used to send the first Downlink Control Information DCI signalings to the first user equipment (UE), and the first DCI signalings include First configured information, physics is sent when different when first configured information is used to indicate to send the first demodulated reference signal DMRS DSCH Downlink Shared Channel PDSCH.

Optionally,

The transmitter is specifically used for：

Optionally,

The transmitter also particularly useful for：

Optionally,

The transmitter is additionally operable to：

Optionally,

The transmitter is additionally operable to：

Optionally,

The transmitter is additionally operable to：

Optionally, the transmitter is additionally operable to：

Figure 16 is the structure diagram of another embodiments of UE of the present invention, which includes receiver 161 and processor 162；Receiver 161 is used at least two channel state information reference signals CSI-RS moneys for receiving same serving BS configuration Source, and receive the demodulated reference signal DMRS that the serving BS is sent；Processor 162 is used to know at least two letter Channel state information reference signal CSI-RS resource is the serving BS configuration, and knows that the DMRS is the service base Stand what is configured.

Optionally,

The receiver is specifically used for

Optionally,

The receiver is specifically used for receiving the first Downlink Control Information DCI signalings that the serving BS is sent, described First DCI signalings include the second configured information, and second configured information is used to indicate the DMRS and described at least two At least one CSI-RS resource is configured by the serving BS in CSI-RS resource；The processor is specifically used for according to institute State the first DCI signalings and know that the DMRS and at least two CSI-RS resource are that the serving BS configures；

Alternatively,

Optionally,

The receiver is specifically used for receiving the RRC signaling that the serving BS is sent, wherein, wrapped in the RRC signaling The first CSI-RS resource is included, first CSI-RS resource is any one CSI-RS moneys at least two CSI-RS resource Source；The 2nd DCI signalings that the serving BS is sent are received, wherein, the 2nd DCI signalings include at least one second and match somebody with somebody To information, each second unpaired message is used to indicate in a Physical Resource Block PRB at least one second unpaired message Interior second CSI-RS resource relative to first CSI-RS resource running time-frequency resource positional information, alternatively, described each second Unpaired message is used for the running time-frequency resource positional information for indicating second CSI-RS resource, and second CSI-RS resource is described Any one CSI-RS resource different from first CSI-RS resource at least two CSI-RS resource, the first CSI- RS resources and second CSI-RS resource share other CSI-RS resource parameters in addition to running time-frequency resource positional information；

Optionally,

The receiver is specifically used in the subframe identical with the 2nd DCI signalings, receives the serving BS hair The DMRS sent；

In the present embodiment, receiver can be specially transceiver, can also specifically be realized using antenna, processor can be adopted Realized with DSP, FPGA etc..It can also include memory, data/address bus, controlling bus, address bus etc. in the present embodiment.

Figure 17 is the structure diagram of another embodiments of UE of the present invention, which includes receiver 171 and processor 172；Receiver 171 is used for the first Downlink Control Information DCI signalings for receiving serving BS transmission, the first DCI signaling bags The first configured information is included, thing is sent when different when first configured information is used to indicate to send the first demodulated reference signal DMRS Manage DSCH Downlink Shared Channel PDSCH；And receive the first DMRS that the serving BS is sent, the first DMRS with PDSCH is sent when different；Processor 172 is used to cache the first DCI signalings and the first DMRS.

Optionally,

The receiver is additionally operable to：It is virtual to receive first for generating the first DMRS that the serving BS is sent Cell number parameter, and for generating the second virtual subdistrict number parameter of the 3rd DMRS, first virtual subdistrict Number parameter is identical with second virtual subdistrict number parameter；

Optionally, the receiver is additionally operable to：Receive the radio resource control RRC signaling that the serving BS is sent, institute Stating RRC signaling includes the second configured information, and second configured information is used to indicate the first DMRS and the described 3rd DMRS is the serving BS configuration；Alternatively, further including the second configured information in the first DCI signalings, described second refers to Show that information is used to indicate that the first DMRS and the 3rd DMRS is the serving BS configuration；Alternatively, receive the clothes The 2nd DCI signalings that business base station is sent, the 2nd DCI signalings include the second configured information, and second configured information is used It is that the serving BS configures in instruction the first DMRS and the 3rd DMRS；

One of ordinary skill in the art will appreciate that：Realizing all or part of step of above-mentioned each method embodiment can lead to The relevant hardware of programmed instruction is crossed to complete.Foregoing program can be stored in a computer read/write memory medium.The journey Sequence upon execution, execution the step of including above-mentioned each method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or Person's CD etc. is various can be with the medium of store program codes.

Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to Can so modify to the technical solution described in foregoing embodiments, either to which part or all technical characteristic into Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology The scope of scheme.

Claims

A kind of 1. method for configuring pilot signal, it is characterised in that including：

Serving BS sends the first Downlink Control Information DCI signalings to the first user equipment (UE), and the first DCI signalings include the One configured information, first configured information are sent under physics when different when being used to indicate to send the first demodulated reference signal DMRS Row shared channel PDSCH；

The serving BS sends the first DMRS to the first UE and does not send the PDSCH.
2. according to the method described in claim 1, it is characterized in that, it is described transmission the first DCI signalings, including：

After first UE access is detected, the first DCI signalings are sent；Alternatively,

The uplink signaling that the first UE is sent is received, the first DCI signalings are sent according to the uplink signaling.
3. method according to claim 1 or 2, it is characterised in that described to send the first DMRS and not to the first UE The PDSCH is sent, including：

After often sending once the first DCI signalings, the first DMRS described in periodicity sending and the PDSCH is not sent；Alternatively,

The first DCI signalings are often sent once, once the first DMRS is sent and does not send the PDSCH.
4. method according to claim 1 or 2, it is characterised in that described in the serving BS to the first UE transmissions First DMRS and do not send the PDSCH and further include：

The serving BS sends the first DMRS to the first UE and does not send the PDSCH, and the serving BS exists The 2nd DMRS is sent to the 2nd UE, while the serving BS is to the 2nd UE on the corresponding running time-frequency resource of first DMRS Send corresponding 2nd PDSCH of the 2nd DMRS.
5. method according to claim 1 or 2, it is characterised in that described in the serving BS to the first UE transmissions First DMRS and after not sending the PDSCH, the method further includes：

The 3rd PDSCH and the 3rd DMRS sent at the same time with the 3rd PDSCH are sent to the first UE, so as to described the One UE demodulates the 3rd PDSCH according to the 3rd DMRS.
6. according to the method described in claim 5, it is characterized in that,

Before the serving BS sends the first DMRS and do not send the PDSCH to the first UE, alternatively, the clothes Business base station sends the first DMRS to the first UE and does not send in the PDSCH, and the method further includes：To described One UE sends the first virtual subdistrict number parameter for being used for generating the first DMRS；

It is described to the first UE send the 3rd PDSCH and with the 3rd PDSCH at the same time send the 3rd DMRS before, or Person, it is described to be sent to the first UE in the 3rd PDSCH and the 3rd DMRS sent at the same time with the 3rd PDSCH, it is described Method further includes：The the second virtual subdistrict number parameter for being used for generating the 3rd DMRS is sent to the first UE,

Wherein, first virtual subdistrict number parameter is identical with second virtual subdistrict number parameter, so as to the UE roots According to the first identical virtual subdistrict number parameter and the second virtual subdistrict number parameter know the first DMRS with it is described 3rd DMRS is the serving BS configuration.
7. according to the method described in claim 5, it is characterized in that,

Before the 3rd PDSCH and the 3rd DMRS sent at the same time with the 3rd PDSCH being sent to the first UE, or to institute State the first UE send the 3rd PDSCH and with the 3rd PDSCH at the same time transmission the 3rd DMRS in, the method further includes： The serving BS sends radio resource control RRC signaling to the first UE, and the RRC signaling includes the second instruction letter Breath, second configured information are used to indicate that the first DMRS and the 3rd DMRS is the serving BS configuration, with Toilet states UE and knows that the first DMRS and the 3rd DMRS is that the serving BS configures according to second configured information 's；Alternatively,

Before the 3rd PDSCH and the 3rd DMRS sent at the same time with the 3rd PDSCH being sent to the first UE, or to institute State the first UE send the 3rd PDSCH and with the 3rd PDSCH at the same time transmission the 3rd DMRS in, the method further includes： The second configured information is further included in the first DCI signalings, second configured information is used to indicate the first DMRS and institute It is the serving BS configuration to state the 3rd DMRS, so that the UE knows the first DMRS according to second configured information It is the serving BS configuration with the 3rd DMRS；Alternatively,

Before the 3rd PDSCH and the 3rd DMRS sent at the same time with the 3rd PDSCH being sent to the first UE, or to institute State the first UE send the 3rd PDSCH and with the 3rd PDSCH at the same time transmission the 3rd DMRS in, the method further includes： The serving BS sends the 2nd DCI signalings to the first UE, and the 2nd DCI signalings include the second configured information, institute State the second configured information to be used to indicate that the first DMRS and the 3rd DMRS is the serving BS configuration, so as to described UE knows that the first DMRS and the 3rd DMRS is that the serving BS configures according to second configured information.
A kind of 8. method for configuring pilot signal, it is characterised in that including：

User equipment (UE) receives the first Downlink Control Information DCI signalings that serving BS is sent, and the first DCI signalings include the One configured information, first configured information are sent under physics when different when being used to indicate to send the first demodulated reference signal DMRS Row shared channel PDSCH；

The UE receives the first DMRS that the serving BS is sent, and the first DMRS is sent when different from PDSCH.
9. according to the method described in claim 8, it is characterized in that, further include：

The UE receives the 3rd PDSCH that the serving BS is sent and the sent at the same time with the 3rd PDSCH the 3rd DMRS；

The UE demodulates the 3rd PDSCH according to the 3rd DMRS.
10. according to the method described in claim 9, it is characterized in that, further include：

The UE receives the first virtual subdistrict number parameter for being used to generate the first DMRS that the serving BS is sent, with And for generating the second virtual subdistrict number parameter of the 3rd DMRS, first virtual subdistrict number parameter and described Two virtual subdistrict number parameters are identical；

The UE knows institute according to identical first virtual subdistrict number parameter and second virtual subdistrict number parameter It is that the serving BS configures to state the first DMRS and the 3rd DMRS.
11. according to the method described in claim 9, it is characterized in that, further include：

The UE receives the radio resource control RRC signaling that the serving BS is sent, and the RRC signaling includes the second instruction Information, second configured information are used to indicate that the first DMRS and the 3rd DMRS is the serving BS configuration； The UE knows that the first DMRS and the 3rd DMRS is that the serving BS configures according to second configured information； Alternatively,

The second configured information is further included in the first DCI signalings, second configured information is used to indicate the first DMRS It is the serving BS configuration with the 3rd DMRS, the UE knows the first DMRS according to second configured information It is the serving BS configuration with the 3rd DMRS；Alternatively,

The UE receives the 2nd DCI signalings that the serving BS is sent, and the 2nd DCI signalings include the second instruction letter Breath, second configured information are used to indicate that the first DMRS and the 3rd DMRS is the serving BS configuration；Institute State UE and know that the first DMRS and the 3rd DMRS is that the serving BS configures according to second configured information.
A kind of 12. serving BS, it is characterised in that including：

First sending module, for sending the first Downlink Control Information DCI signalings, the first DCI to the first user equipment (UE) Signaling includes the first configured information, when first configured information is used to indicate to send different during the first demodulated reference signal DMRS Send Physical Downlink Shared Channel PDSCH；

Second sending module, for sending the first DMRS to the first UE and not sending the PDSCH.
13. serving BS according to claim 12, it is characterised in that first sending module is specifically used for：

After first UE access is detected, the first DCI signalings are sent；Alternatively,

The uplink signaling that the first UE is sent is received, the first DCI signalings are sent according to the uplink signaling.
14. the serving BS according to claim 12 or 13, it is characterised in that second sending module is specifically used for：

After often sending once the first DCI signalings, the first DMRS described in periodicity sending and the PDSCH is not sent；Alternatively,

The first DCI signalings are often sent once, once the first DMRS is sent and does not send the PDSCH.
15. the serving BS according to claim 12 or 13, it is characterised in that further include：

3rd sending module, for sending the 2nd DMRS to the 2nd UE on the corresponding running time-frequency resources of the first DMRS, at the same time The serving BS sends corresponding 2nd PDSCH of the 2nd DMRS to the 2nd UE.
16. the serving BS according to claim 12 or 13, it is characterised in that further include：

4th sending module, for sending the 3rd PDSCH and sent at the same time with the 3rd PDSCH the to the first UE Three DMRS, so that the first UE demodulates the 3rd PDSCH according to the 3rd DMRS.
17. serving BS according to claim 16, it is characterised in that further include：

5th sending module, ginseng is numbered for sending the first virtual subdistrict for being used to generate the first DMRS to the first UE Number；And the second virtual subdistrict number parameter for being used for generating the 3rd DMRS is sent to the first UE, wherein, it is described First virtual subdistrict number parameter is identical with second virtual subdistrict number parameter, so that the UE is according to described identical One virtual subdistrict number parameter and the second virtual subdistrict number parameter know that the first DMRS and the 3rd DMRS is described Serving BS configuration.
18. serving BS according to claim 16, it is characterised in that

The second configured information is further included in the first DCI signalings, second configured information is used to indicate the first DMRS It is the serving BS configuration with the 3rd DMRS, so that the UE knows described first according to second configured information DMRS and the 3rd DMRS is the serving BS configuration；Alternatively, the serving BS further includes：

6th sending module, for sending radio resource control RRC signaling to the first UE, the RRC signaling includes the Two configured informations, second configured information are used to indicate that the first DMRS and the 3rd DMRS is that the serving BS is matched somebody with somebody Put, so that the UE knows that the first DMRS and the 3rd DMRS is the service base according to second configured information Stand what is configured；Alternatively,

The 2nd DCI signalings are sent to the first UE, the 2nd DCI signalings include the second configured information, and described second refers to Show that information is used to indicate that the first DMRS and the 3rd DMRS is the serving BS configuration, so that the UE is according to institute State the second configured information and know that the first DMRS and the 3rd DMRS is the serving BS configuration.
A kind of 19. user equipment (UE), it is characterised in that including：

First receiving module, for receiving the first Downlink Control Information DCI signalings of serving BS transmission, the first DCI letters Order includes the first configured information, is sent out when different when first configured information is used to indicate to send the first demodulated reference signal DMRS Send Physical Downlink Shared Channel PDSCH；

Second receiving module, for receiving the first DMRS, the first DMRS and PDSCH of the serving BS transmission not Send at the same time.
20. UE according to claim 19, it is characterised in that further include：

3rd receiving module, for receiving the 3rd PDSCH of the serving BS transmission and being sent out at the same time with the 3rd PDSCH The 3rd DMRS sent；

Demodulation module, for demodulating the 3rd PDSCH according to the 3rd DMRS.
21. UE according to claim 20, it is characterised in that further include：

4th receiving module, the first virtual subdistrict for being used to generate the first DMRS sent for receiving the serving BS Number parameter, and for generating the second virtual subdistrict number parameter of the 3rd DMRS, the first virtual subdistrict numbering Parameter is identical with second virtual subdistrict number parameter；

First determining module, for according to identical first virtual subdistrict number parameter and second virtual subdistrict numbering Parameter knows that the first DMRS and the 3rd DMRS is that the serving BS configures.
22. UE according to claim 20, it is characterised in that further include：

5th receiving module, the radio resource control RRC signaling sent for receiving the serving BS, in the RRC signaling Including the second configured information, second configured information is used to indicate that the first DMRS and the 3rd DMRS is the service Base station configuration；The UE knows that the first DMRS and the 3rd DMRS is the service according to second configured information Base station configuration；Alternatively,

The 2nd DCI signalings that the serving BS is sent are received, the 2nd DCI signalings include the second configured information, described Second configured information is used to indicate that the first DMRS and the 3rd DMRS is the serving BS configuration；The UE according to Second configured information knows that the first DMRS and the 3rd DMRS is the serving BS configuration；It is alternatively, described Further include the second configured information in first DCI signalings, second configured information is used to indicating the first DMRS and described the Three DMRS are serving BS configurations, and the UE knows the first DMRS and described the according to second configured information Three DMRS are the serving BS configurations；

Second determining module, for knowing that the first DMRS and the 3rd DMRS is described according to second configured information Serving BS configuration.