WO2013166725A1

WO2013166725A1 - Method and device for configuring reference signal

Info

Publication number: WO2013166725A1
Application number: PCT/CN2012/075396
Authority: WO
Inventors: 孙静原; 任晓涛; 周永行
Original assignee: 华为技术有限公司
Priority date: 2012-05-11
Filing date: 2012-05-11
Publication date: 2013-11-14
Also published as: CN103563321A

Abstract

Embodiments of the present invention relate to the field of communications and provide a method and device for configuring a reference signal, which can accurately determine a channel state information-reference signal (CSI-RS) sequence and/or a pilot pattern corresponding to a CSI-RS, thereby accurately receiving and using the CSI-RS. The method for configuring a reference signal comprises: a base station sending cyclic prefix (CP) length indication information of a CSI-RS to a user equipment (UE), the CP length indication information being used by the UE to determine a CP length of the CSI-RS, so that the UE determines a CSI-RS sequence and/or a pilot pattern corresponding to the CSI-RS according to the CP length. A method for configuring a reference signal comprises: a UE obtaining a CP length of a CSI-RS; the UE determining a CSI-RS sequence and/or a pilot pattern corresponding to the CSI-RS according to the CP length.

Description

Method and device for configuring reference signal

The present invention relates to the field of communications, and in particular, to a method and apparatus for configuring a reference signal. Background technique

In the LTE (Long Term Evolution) system, the CP (cyclic prefix) includes two possible configurations: a regular CP and an extended CP.

In a network, different cells or different access nodes can use different CP configurations. When the base station sends a plurality of CSI-RSs (Channel State Information-Reference Signals) to the UE (User Equipment), the multiple CSI-RSs may use different CP configurations, that is, Some CSI-RSs use regular CPs, while another part of CSI-RS uses extended CPs. However, the UE cannot correctly obtain the CP configuration used by each CSI-RS. Therefore, the UE may not correctly determine the CSI-RS sequence and/or the pilot pattern corresponding to the CSI-RS, so that the CSI-RS cannot be correctly received and used. Summary of the invention

The embodiments of the present invention provide a method and an apparatus for configuring a reference signal, which can correctly determine a CSI-RS sequence and/or a pilot pattern corresponding to a CSI-RS, and thereby correctly receive and use a CSI-RS.

According to an aspect of the present invention, a method for configuring a reference signal is provided, the method comprising:

The base station sends the CP length indication information of the CSI-RS to the UE, where the CP length indication information can be used by the UE to determine the CP length of the CSI-RS, so that the UE is in the CP length, and the determined CSI-RS sequence and/or pilot pattern corresponding to CSI-RS. According to another aspect of the present invention, a base station apparatus for configuring a reference signal is provided, the apparatus comprising:

a sending unit, configured to send, to the UE, a CP length indication information of the CSI-RS, where the CP length indication information can be used by the UE to determine a CP length of the CSI-RS, so that the UE is configured according to the CP length. And determining a CSI-RS sequence and/or a pilot pattern corresponding to the CSI-RS.

According to an aspect of the present invention, a method of configuring a reference signal is provided, the method comprising:

The UE obtains the CP length of the CSI-RS;

Determining, by the UE, a CSI-RS sequence and a pilot pattern corresponding to the CSI-RS according to the CP length.

According to another aspect of the present invention, a UE for configuring a reference signal is provided, where the UE includes:

An obtaining unit, configured to obtain a CP length of the CSI-RS;

And a determining unit, configured to determine, according to the CP length acquired by the acquiring unit, a CSI-RS sequence and a pilot pattern corresponding to the CSI-RS.

After the foregoing technical solution, the method and device for configuring a reference signal according to the embodiment of the present invention, the base station sends the CP length indication information of the CSI-RS to the UE, and the UE can obtain the CSI according to the CP length indication information. The CP length of the RS, which in turn determines the CSI-RS sequence and pilot pattern corresponding to the CSI-RS. In this process, the CP length of the CSI-RS is determined first, and thus the CSI-RS sequence and/or the pilot pattern corresponding to the CSI-RS can be correctly determined, and the CSI-RS is correctly received and used. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are to be regarded as Without the creative labor, you can also obtain other attachments based on these drawings. Figure.

FIG. 1 is a flowchart of a method for configuring a reference signal according to an embodiment of the present invention;

2 is a flowchart of an embodiment of a method for configuring a reference signal according to the present invention; FIG. 3 is a flowchart of another embodiment of a method for configuring a reference signal according to the present invention; FIG. 5 is a structural block diagram of a base station apparatus for configuring a reference signal according to an embodiment of the present invention; FIG. 6A is a structural block diagram of a UE for configuring a reference signal according to an embodiment of the present invention; 6B is a structural block diagram of the acquisition unit shown in FIG. 6A. detailed description

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

An embodiment of the present invention provides a method for configuring a reference signal, where the method is described based on a base station, and includes:

The base station sends the CP length indication information of the CSI-RS to the UE, where the CP length indication information can be used by the UE to determine the CP length of the CSI-RS, so that the UE is in the CP length, and the determined CSI-RS sequence and/or pilot pattern corresponding to CSI-RS.

The CP length indication information is used to directly or indirectly indicate the CP length of the CSI-RS. The CP length indication information includes: a CP length corresponding to the CSI-RS, a cell identifier of the CSI-RS corresponding cell, and the like.

The base station can transmit the CP length indication information of the CSI-RS to the UE in various manners. Specifically, in a manner, the base station sends, to the user equipment, the at least one channel state information-reference signal, the at least one channel state information, each channel state information in the reference signal, and the cyclic prefix length indication information corresponding to the reference signal. Another way can be bitmap mapping, that is, the base station sends the UE to the UE in a bitmap mapping manner. CP length indication information of the CSI-RS.

The method for configuring a reference signal according to the embodiment of the present invention, the base station sends the CP length indication information of the CSI-RS to the UE, and the UE can obtain the CP length of the CSI-RS according to the CP length indication information, and further determine the The CSI-RS sequence and pilot pattern corresponding to the CSI-RS are described. In this process, the CP length of the CSI-RS is determined first, and thus the CSI-RS sequence and/or the pilot pattern corresponding to the CSI-RS can be correctly determined, thereby correctly receiving and using the CSI-RS. Correspondingly, as shown in FIG. 1 , an embodiment of the present invention further provides a method for configuring a reference signal, where the method is described based on a UE, and includes:

1 1. The UE obtains the CP length of the CSI-RS.

The UE can obtain the CP length information of the CSI-RS in various manners. When the CSI-RS indicates that the base station indicates the first CSI-RS of the CP length to the UE, the UE may determine, according to the CP length indication information of the first CSI-RS delivered by the base station, The length of the CP corresponding to the first CSI-RS. When the CSI-RS is the second CSI-RS that the base station does not indicate the CP length to the UE, the UE may use the CP length corresponding to the first signal as the CP length of the second CSI-RS; or The UE determines that the CP length of the second CSI-RS is a regular cyclic prefix length; or, the UE determines that the CP length of the second CSI-RS is an extended cyclic prefix length; or, the UE determines the second CSI-RS. The length of the CP is the same as the length of the CP corresponding to the primary serving cell.

The first signal may include a signal corresponding to a downlink control channel corresponding to the primary serving cell, a synchronization signal corresponding to the primary serving cell, and a common pilot signal corresponding to the primary serving cell.

12. The UE determines, according to the CP length information, a CSI-RS sequence and/or a pilot pattern corresponding to the CSI-RS.

The method for configuring a reference signal according to the embodiment of the present invention, the base station sends the CP length indication information of the CSI-RS to the UE, and the UE can obtain the CP length of the CSI-RS according to the CP length indication information, and further determine the The CSI-RS sequence and pilot pattern corresponding to the CSI-RS are described. As in this process, the CP of the CSI-RS will be determined first. The length, and thus, the CSI-RS sequence and/or the pilot pattern corresponding to the CSI-RS can be correctly determined, thereby correctly receiving and using the CSI-RS.

One step explanation. It is also to be noted that the embodiments set forth below are only a part of the embodiments of the present invention, and those skilled in the art can readily contemplate other embodiments, which are within the scope of the present invention.

The following embodiments 1 and 2 are for the case where the base station sends the first CSI-RS to the UE, and the first CSI-RS refers to the CSI that the base station notifies the UE of the CP length information in the embodiment of the present invention. -RS. Embodiment 3: The case where the base station sends the CSI-RS and the second CSI-RS to the UE, where the second CSI-RS is in the embodiment of the present invention, the base station is not sent to the UE. A CSI-RS that notifies the CP length information.

Example 1

This embodiment is applicable to the case where the base station directly sends the CP length indication information to the UE for each CSI-RS sent to the UE. Specifically, as shown in FIG. 2, the method for configuring a reference signal provided by this embodiment includes:

The base station sends a plurality of CSI-RSs to the UE, and the CP indication information corresponding to the CSI-RS is sent to the UE for each of the multiple CSI-RSs, where the CP indication information includes the CP length information of CSI-RS.

Optionally, the CP indication information may further include other CP related information of the CSI-RS, such as CP format information.

22. The UE receives the CP indication information corresponding to the CSI-RS, and determines the CP length of the CSI-RS according to the CP indication information.

Specifically, since the CP indication information includes the CP length information of the CSI-RS, after receiving the CP indication information, the UE may directly determine the CP length of the CSI-RS.

Optionally, the base station may notify, for each CSI-RS in the subset of CSI-RSs notified to the UE, the CP length information corresponding to the CSI-RS, and notify the other CSI-RSs of the UE to notify the other CSI-RSs of the UE. These CSI-RSs of UE use unified CP or expansion Exhibition CP.

Optionally, when the CP indication information further includes other CP related information (such as CP format information, etc.) of the CSI-RS, the UE receives the CP indication information corresponding to the CSI-RS, and according to the CP indication Information, determining other CP related parameter information of the CSI-RS, such as CP format information.

The UE determines, according to the determined CP length of the CSI-RS, a CSI-RS sequence and/or a pilot pattern corresponding to the CSI-RS.

Specifically, determining the CSI-RS sequence corresponding to the CSI-RS may generate a formula using the following CSI-RS sequence:

_Cinit = 2 ¹ . · (7 · (" _s + 1) + / + 1) · (2 J + 1) + 2 · + N _CP or write c _mit = f(Ncp,...)

_ΆΤ ίι for regular CP

N _cv = < —丄~

1θ For the extended CP where X represents the parameters of the CSI-RS, including but not limited to the cell identity. Ci _n i _t represents state information for initializing a pseudo-random sequence generator at the beginning of each OFDM (Orthogonal Frequency Division Multiplexing) symbol, and n _s represents a slot number in a radio frame, / indicates The OFDM symbol number in the slot, Nc represents the CP length corresponding parameter.

Meanwhile, the pilot pattern corresponding to the CSI-RS may be specifically determined as follows:

1) if the CP corresponding to the CSI-RS is a regular CP, the corresponding pilot pattern is found from the CSI-RS pilot pattern set corresponding to the regular CP according to the pilot pattern number of the CSI-RS;

2) If the CP corresponding to the CSI-RS is an extended CP, the corresponding pilot pattern is found from the CSI-RS pilot pattern set corresponding to the extended CP according to the pilot pattern number of the corresponding CSI-RS.

The method for configuring a reference signal according to the embodiment of the present invention, the base station sends the CP length indication information of the CSI-RS to the UE, and the UE can obtain the CP length of the CSI-RS according to the CP length indication information, and further determine the The CSI-RS sequence and pilot pattern corresponding to the CSI-RS are described. Since the CP length of the CSI-RS is determined first in this process, the CSI-RS sequence and/or the corresponding CSI-RS can be correctly determined. The frequency pattern, and thus the CSI-RS, is correctly received and used. Example 2

The embodiment is applicable to the case where the base station sends the cell identifier of the cell corresponding to the CSI-RS to the UE for each CSI-RS sent to the UE, that is, the cell identifier of the cell corresponding to the CSI-RS is used as the CP length indication information of the CSI-RS. Specifically, as shown in FIG. 3, the method for configuring a reference signal provided by this embodiment includes:

The base station sends a plurality of CSI-RSs to the UE, and sends the CSI-RS corresponding CP indication information to the UE for each of the multiple CSI-RSs, where the CP indication information includes The cell identifier (CP length indication information) of the cell corresponding to the CSI-RS.

The UE receives the CP indication information corresponding to the CSI-RS, and determines the CP length of the cell according to the cell identifier of the cell corresponding to the CSI-RS included in the CP indication information.

33. The UE determines that the CP length of the CSI-RS is a CP length corresponding to the cell.

Optionally, when the CP indication information may further include other CP related information of the CSI-RS, such as CP format information, the UE receives the CP indication information corresponding to the CSI-RS, and according to the CP indication. The cell identifier of the cell corresponding to the CSI-RS included in the information is determined, and the other CP-related parameter information of the CSI-RS is determined to be the same as the CP-related parameter (such as the CP format information, etc.) corresponding to the cell.

34. The UE determines, according to the determined CP length of the CSI-RS, a CSI-RS sequence and/or a pilot pattern corresponding to the CSI-RS.

For the specific manner of determining the CSI-RS sequence and the pilot pattern, refer to Embodiment 1. It should be noted that, in the embodiment of the present invention, when the base station notifies the cell identifier of the cell corresponding to the CSI-RS of the user equipment, the cell corresponding to the CSI-RS mentioned herein is only used to notify the user equipment of the CP parameter of the CSI-RS. Consistent with the CP parameter of the cell, the cell is not necessarily required to be the cell that transmits the CSI-RS.

A method for configuring a reference signal provided by an embodiment of the present invention, where a base station sends a message to a UE The CP length indication information of the CSI-RS, the UE is configured to obtain the CP length of the CSI-RS according to the CP length indication information, and further determine a CSI-RS sequence and a pilot pattern corresponding to the CSI-RS. In this process, the CP length of the CSI-RS is determined first, and thus the CSI-RS sequence and/or the pilot pattern corresponding to the CSI-RS can be correctly determined, thereby correctly receiving and using the CSI-RS.

Example 3

This embodiment is applicable to a case where a plurality of CSI-RSs sent by a base station to a UE include a first CSI-RS and a second CSI-RS.

As shown in FIG. 4, the method for configuring a reference signal provided by this embodiment includes:

41. The base station sends multiple CSI-RSs to the UE, where the multiple CSI-RSs include a first CSI-RS and a second CSI-RS.

42. The UE receives the multiple CSI-RSs, and determines a CP length of the first CSI-RS and a CP length of the second CSI-RS.

Specifically, for the first CSI-RS, using the received CP length indication information to determine a CP length of the first CSI-RS; and for the second CSI-RS, using a CP corresponding to the received first signal a length, as a CP length of the second CSI-RS, or, for the second CSI-RS, the UE directly determines a CP length of the second CSI-RS as a regular cyclic prefix length, or The second CSI-RS, the UE directly determines that the CP length of the second CSI-RS is an extended cyclic prefix length, or, for the second CSI-RS, the UE determines the second CSI-RS The length of the CP is the same as the length of the CP corresponding to the primary serving cell.

The first signal included in the foregoing includes, but is not limited to, a signal corresponding to a downlink control channel corresponding to the primary serving cell, a synchronization signal corresponding to the primary serving cell, and a common pilot signal corresponding to the primary serving cell.

At the same time, the base station can determine the CP length of the second CSI-RS in the same manner as the UE.

43. The UE according to the determined CP length of the first CSI-RS and the first The CP length of the two CSI-RSs is correspondingly determined by the CSI-RS sequence and/or the pilot pattern corresponding to the first CSI-RS, and the CSI-RS sequence and/or the pilot pattern corresponding to the second CSI-RS.

Optionally, the corresponding C-related parameters of the second CSI-RS may be determined according to other CP-related parameters corresponding to the first signal, for example, other CP-related parameters of the second CSI-RS are the same as the CP-related parameters corresponding to the first signal. .

For a specific manner of determining the CSI-RS sequence and the pilot pattern, refer to Embodiment 1, and no further details are provided herein.

In addition, it should be noted that, in the embodiment of the present invention, the base station can acquire the CP length of the second CSI-RS in the same manner as the UE. Specifically, when the CSI-RS is the second CSI-RS, the acquiring, by the base station, the CP length of the CSI-RS may include:

And the base station is configured to use the CP length corresponding to the first signal sent to the UE as the CP length of the second CSI-RS, where the first signal may include the UE a signal corresponding to the downlink control channel corresponding to the primary serving cell, a synchronization signal corresponding to the primary serving cell where the UE is located, a common pilot signal corresponding to the primary serving cell where the UE is located, and the like;

Or the base station determines that the CP length of the second CSI-RS is a regular CP length;

Or the base station determines that the CP length of the second CSI-RS is an extended CP length;

Or the base station determines that the CP length of the second CSI-RS is the same as the CP length of the primary serving cell of the UE.

The method for configuring a reference signal according to the embodiment of the present invention, the base station sends the CP length indication information of the CSI-RS to the UE, and the UE can obtain the CP length of the CSI-RS according to the CP length indication information, and further determine the The CSI-RS sequence and pilot pattern corresponding to the CSI-RS are described. In this process, the CP length of the CSI-RS is determined first, and thus the CSI-RS sequence and/or the pilot pattern corresponding to the CSI-RS can be correctly determined, thereby correctly receiving and using the CSI-RS.

In addition, it should be particularly noted that in all embodiments of the present invention, the base station can The CP length information of the CSI-RS can be notified to the UE in a different manner. The various ways are as follows:

Mode 1: The base station directly notifies the UE of the CP length information corresponding to the CSI-RS or the cell identifier of the cell with the same CP length corresponding to the CSI-RS for each CSI-RS; Mode 2: The base station uses a bitmap The way to map to inform which CSI-RSs use regular CPs or extended CPs.

For example, a normal CP can be represented by bit 0 and an extended CP can be represented by bit 1. If the bitmap map ^ mouth is shown in the following table:

Then, CSI-RS2/3 corresponds to the extended CP, while CSI-RS 1/4/5/6/7/8 corresponds to the conventional CP. The number of the CSI-RS is well known to the base station and the UE.

When the base station notifies the UE of the CP length information of the CSI-RS, it notifies a bitmap map (here, 01100000).

Mode 3: The base station uses a bitmap mapping method to notify which CSI-RSs use the same CP length as the CP length corresponding to a certain cell.

For example, the bitmap mapping can be used to indicate which CSI-RS CPs are the same as the CPs of the designated cell (here, cell 1 is taken as an example:). The bit 0 can be used to indicate that the CP corresponding to the specified cell is different, and bit 1 indicates that the CP corresponding to the specified cell is the same. If the bitmap map is as shown in the following table:

Then, the CP corresponding to CSI-RS2/3 is the same as the CP corresponding to cell 1, and

The CP corresponding to the CSI-RS 1/4/5/6/7/8 is different from the CP corresponding to the cell 1. The number of the CSI-RS is well-known to the base station and the UE, where the designated cell is a cell that the base station notifies to the UE or is predefined, such as the primary serving cell or the PDCCH (Physical Downlink Control) Channel, physical downlink control channel) A cell to the UE or a cell that establishes an RRC (Radio Resource Control) connection with the UE.

In mode 2 and mode 3, after receiving the bitmap mapping sent by the base station, the UE may determine the CP length information of the corresponding CSI-RS according to the pre-negotiated bitmap mapping meaning. The embodiment of the present invention further provides a base station apparatus 50 for configuring a reference signal. As shown in FIG. 5, the apparatus 50 includes:

The sending unit 51 is configured to send, to the UE, the CP length indication information of the CSI-RS, where the CP length indication information can be used by the UE to determine a CP length of the CSI-RS, so that the UE is configured according to the CP. Length, determining a CSI-RS sequence and/or a pilot pattern corresponding to the CSI-RS.

The CP length indication information may include: a CP length corresponding to the CSI-RS, and a cell identifier of the CSI-RS corresponding cell.

Optionally, the sending unit 51 is configured to: send, to the user equipment, the loop corresponding to each channel state information-reference signal in the at least one channel state information-reference signal for the at least one channel state information-reference signal The prefix length indication information, or the channel state information-reference signal cyclic prefix length indication information is sent to the user equipment in a bitmap mapping manner.

The base station apparatus configured with the reference signal according to the embodiment of the present invention, the base station sends the CP length indication information of the CSI-RS to the UE, and the UE can obtain the CP length of the CSI-RS according to the CP length indication information, and further determine The CSI-RS sequence and the pilot pattern corresponding to the CSI-RS. In this process, the CP length of the CSI-RS is determined first, and thus the CSI-RS sequence and/or the pilot pattern corresponding to the CSI-RS can be correctly determined, thereby correctly receiving and using the CSI-RS. Corresponding to the method for configuring the reference signal provided by the embodiment of the present invention, the embodiment of the present invention further provides a UE 60 for configuring a reference signal. As shown in FIG. 6A, the UE 60 includes:

An obtaining unit 61, configured to acquire a CP length of the CSI-RS;

The determining unit 62 is configured to determine, according to the CP length of the CSI-RS acquired by the acquiring unit, a CSI-RS sequence and/or a pilot pattern corresponding to the CSI-RS.

The CSI-RS may be a first CSI-RS or a second CSI-RS. In the embodiment of the present invention, the first CSI-RS is that the base station indicates a CSI-RS of a CP length to the UE; and the second CSI-RS is that the base station does not indicate a CP length to the UE. CSI-RS.

In an embodiment of the present invention, the CSI-RS is a first CSI-RS, and as shown in FIG. 6B, the acquiring unit 61 includes:

The receiving module 61 1 is configured to receive CP length indication information corresponding to the first CSI-RS sent by the base station for the first CSI-RS;

The determining module 612 is configured to determine a CP length of the first CSI-RS according to the CP length indication information corresponding to the first CSI-RS received by the receiving module 61 1 .

The CP length indication information includes: a CP length corresponding to the CSI-RS, and a cell identifier of the CSI-RS corresponding cell.

Optionally, in an embodiment of the present invention, the CP length indication information is a CP length of the first CSI-RS, and the determining module 612 may directly determine a CP length of the first CSI-RS.

Optionally, in an embodiment of the present invention, the CP length indication information is a cell identifier of a cell corresponding to the first CSI-RS; at this time, the determining module 612 is configured to:

Determining, according to the cell identifier of the cell corresponding to the first CSI-RS, a CP length corresponding to the cell;

Determining a CP length of the first CSI-RS as a CP length corresponding to the cell. In another embodiment of the present invention, the CSI-RS is a second CSI-RS, and the acquiring unit 61 is further configured to: For the second CSI-RS, using the CP length corresponding to the received first signal as the CP length of the second CSI-RS;

Or determining that the CP length of the second CSI-RS is a regular CP length; or determining that the CP length of the second CSI-RS is an extended CP length; or determining a CP length of the second CSI-RS and The CPs corresponding to the primary serving cell are the same length.

The first signal includes a signal corresponding to a downlink control channel corresponding to the primary serving cell, a synchronization signal corresponding to the primary serving cell, and a common pilot signal corresponding to the primary serving cell.

The base station apparatus configured with the reference signal according to the embodiment of the present invention, the base station sends the CP length indication information of the CSI-RS to the UE, and the UE can obtain the CP length of the CSI-RS according to the CP length indication information, and further determine The CSI-RS sequence and the pilot pattern corresponding to the CSI-RS. In this process, the CP length of the CSI-RS is determined first, and thus the CSI-RS sequence and/or the pilot pattern corresponding to the CSI-RS can be correctly determined, and the CSI-RS is correctly received and used.

It should be noted that the channel state information-reference signal CSI-RS in the present invention includes a channel state information-reference signal CSI-RS resource.

It should be noted that, in the foregoing base station and UE embodiments, each unit included is only divided according to functional logic, but is not limited to the foregoing division, as long as the corresponding function can be implemented; The specific names are also for convenience of distinguishing from each other and are not intended to limit the scope of the present invention.

A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be performed by a program to instruct related hardware, and the program may be stored in a computer readable storage medium, and the storage medium may be Is a read-only memory, a disk or a disc, and so on.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

claims

1. A method for configuring a reference signal, characterized in that the method includes: the base station sends channel state information-cyclic prefix length indication information of the reference signal to the user equipment, and the cyclic prefix length indication information can be used by the user equipment Used to determine the cyclic prefix length of the channel state information-reference signal, so that the user equipment determines the channel state information-reference signal sequence and/or corresponding to the channel state information-reference signal according to the cyclic prefix length. Pilot pattern.

2. The method according to claim 1, characterized in that, the cyclic prefix length indication information includes: the cyclic prefix length corresponding to the channel state information-reference signal, the cell corresponding to the channel state information-reference signal. logo.

3. The method according to claim 1 or 2, characterized in that, the base station sending the cyclic prefix length indication information of the channel state information-reference signal to the user equipment includes: the base station transmits the channel state information-reference signal to the user equipment for at least one channel state information-reference signal. The user equipment sends the cyclic prefix length indication information corresponding to each of the at least one channel state information-reference signal and the reference signal, or the base station sends the channel state information to the user equipment in a bitmap mapping manner. - Cyclic prefix length indication information of the reference signal.

4. A method for configuring a reference signal, characterized in that the method includes: the user equipment obtains channel state information-the cyclic prefix length of the reference signal;

The user equipment determines the channel state information-reference signal sequence and/or pilot pattern corresponding to the channel state information-reference signal according to the cyclic prefix length.

5. The method according to claim 4, characterized in that: the channel state information-reference signal is a first channel state information-reference signal, and the first channel state information-reference signal is a signal transmitted by the base station to the The user equipment indicates the channel state information-reference signal of the cyclic prefix length information. The user equipment obtains the cyclic prefix length of the channel state information-reference signal including:

The user equipment receives the cyclic prefix length indication information corresponding to the first channel state information-reference signal sent by the base station for the first channel state information-reference signal;

The user equipment determines the first information based on the cyclic prefix length indication information. Track status information - the cyclic prefix length of the reference signal.

6. The method according to claim 5, wherein the cyclic prefix length indication information is the cyclic prefix length of the first channel state information-reference signal.

7. The method according to claim 5, characterized in that the cyclic prefix length indication information is the cell identifier of the cell corresponding to the first channel state information-reference signal;

The user equipment determines the cyclic prefix length of the first channel state information-reference signal according to the cyclic prefix length indication information, including:

The user equipment determines the cyclic prefix length corresponding to the cell according to the cell identity of the cell corresponding to the first channel state information-reference signal;

The user equipment determines that the cyclic prefix length of the first channel state information-reference signal is the cyclic prefix length corresponding to the cell.

8. The method according to claim 4, characterized in that, the channel state information-reference signal is a second channel state information-reference signal, and the second channel state information-reference signal is a signal not transmitted to the base station by the base station. The user equipment indicates the channel state information-reference signal of the cyclic prefix length, and the user equipment obtains the cyclic prefix length of the channel state information-reference signal including:

For the second channel state information-reference signal, the user equipment uses the cyclic prefix length corresponding to the received first signal as the cyclic prefix length of the second channel state information-reference signal,

Or, the user equipment determines that the cyclic prefix length of the second channel state information-reference signal is a conventional cyclic prefix length,

Or, the user equipment determines that the cyclic prefix length of the second channel state information-reference signal is an extended cyclic prefix length;

Alternatively, the user equipment determines that the cyclic prefix length of the second channel state information-reference signal is the same as the cyclic prefix length corresponding to the primary serving cell.

9. The method according to claim 8, the first signal includes a signal corresponding to the downlink control channel corresponding to the primary serving cell, a synchronization signal corresponding to the primary serving cell, and a common pilot signal corresponding to the primary serving cell.

10. A base station device for configuring reference signals, characterized in that the device includes: a sending unit, configured to send channel state information-cyclic prefix length indication information of the reference signal to the user equipment, and the cyclic prefix length indication information can is used by the user equipment to determine the cyclic prefix length of the channel state information-reference signal, so that the user equipment determines the channel state information-reference corresponding to the channel state information-reference signal according to the cyclic prefix length. Signal sequence and/or pilot pattern.

1 1. The device according to claim 10, characterized in that, the cyclic prefix length indication information includes: the cyclic prefix length corresponding to the channel state information-reference signal, the cyclic prefix length corresponding to the channel state information-reference signal, Community ID.

12. The apparatus according to claim 10 or 11, characterized in that, the sending unit is configured to: send the at least one channel state information-reference signal to the user equipment for at least one channel state information-reference signal. Cyclic prefix length indication information corresponding to each channel state information-reference signal in the channel state information-reference signal, or the cyclic prefix length indication information corresponding to the channel state information-reference signal is sent to the user equipment in a bitmap mapping manner.

13. A user equipment configured with reference signals, characterized in that the user equipment includes:

The acquisition unit is used to acquire the cyclic prefix length of the channel state information-reference signal; the determination unit is used to determine the channel state information-reference signal according to the cyclic prefix length of the channel state information-reference signal acquired by the acquisition unit. Channel state information corresponding to the signal - reference signal sequence and/or pilot pattern.

14. The user equipment according to claim 13, characterized in that, the channel state information-reference signal is a first channel state information-reference signal, and the first channel state information-reference signal is a signal transmitted by the base station to the base station. The user equipment indicates the channel state information-reference signal of the cyclic prefix length, and the acquisition unit includes:

A receiving module configured to receive the cyclic prefix length indication information corresponding to the first channel state information-reference signal sent by the base station for the first channel state information-reference signal;

Determining module, configured to determine according to the first channel state information-parameter received by the receiving module. Determine the cyclic prefix length of the first channel state information-reference signal based on the cyclic prefix length indication information corresponding to the signal.

15. The user equipment according to claim 14, wherein the cyclic prefix length indication information is the cyclic prefix length of the first channel state information-reference signal.

16. The user equipment according to claim 14, wherein the cyclic prefix length indication information is the cell identifier of the cell corresponding to the first channel state information-reference signal;

The determination module is used for:

Determine the cyclic prefix length corresponding to the cell according to the cell identity of the cell corresponding to the first channel state information-reference signal;

The cyclic prefix length of the first channel state information-reference signal is determined to be the cyclic prefix length corresponding to the cell.

17. The user equipment according to claim 13, characterized in that, the channel state information-reference signal is a second channel state information-reference signal, and the second channel state information-reference signal is a signal not sent to the base station. The user equipment indicates the channel state information-reference signal of the cyclic prefix length, and the acquisition unit is also used to:

For the second channel state information-reference signal, use the cyclic prefix length corresponding to the received first signal as the cyclic prefix length of the second channel state information-reference signal;

Or, determine that the cyclic prefix length of the second channel state information-reference signal is a conventional cyclic prefix length;

Or, determine that the cyclic prefix length of the second channel state information-reference signal is an extended cyclic prefix length;

18. The user equipment according to claim 17, the first signal includes a signal corresponding to the downlink control channel corresponding to the primary serving cell, a synchronization signal corresponding to the primary serving cell, and a common pilot signal corresponding to the primary serving cell.