CN103563321A - Method and device for configuring reference signal - Google Patents

Method and device for configuring reference signal Download PDF

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Publication number
CN103563321A
CN103563321A CN201280000645.4A CN201280000645A CN103563321A CN 103563321 A CN103563321 A CN 103563321A CN 201280000645 A CN201280000645 A CN 201280000645A CN 103563321 A CN103563321 A CN 103563321A
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China
Prior art keywords
reference signal
length
channel condition
condition information
circulating prefix
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Chinese (zh)
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孙静原
任晓涛
周永行
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
    • H04L27/2607—Cyclic extensions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2666—Acquisition of further OFDM parameters, e.g. bandwidth, subcarrier spacing, or guard interval length
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path

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
A kind of method and apparatus technical field for configuring reference signal
The present invention relates to the communications field, more particularly to a kind of method and apparatus for configuring reference signal.Background technology
In LTE (Long Term Evolution, Long Term Evolution）In system, CP (cyclic prefix, cyclic prefix）Including two kinds of possible configurations：Conventional CP and extension CP.
In a network, different cells or different access nodes can use different CP to configure.In base station to UE (User Equipment, user equipment）Send multiple CSI-RS (Channel State Information-Reference Signal, channel condition information-reference signal）When, the multiple CSI-RS may use different CP to configure, i.e. a part of CSI-RS uses routine CP, and another part CSI-RS uses extension CP.And UE can not correctly obtain the CP configurations that each CSI-RS is used, thus, UE can not may correctly determine the corresponding CSI-RS sequences of CSI-RS and/or pilot frequency design, so as to be unable to properly receive and use CSI-RS.The content of the invention
The embodiment of the present invention provides a kind of method and apparatus for configuring reference signal, can correctly determine the corresponding CSI-RS sequences of CSI-RS and/or pilot frequency design, and then be properly received and use CSI-RS.
According to an aspect of the present invention there is provided a kind of collocation method of reference signal, methods described includes：
Base station sends CSI-RS CP Length Indication information to UE, the CP Length Indications information can be used for determining the CP length of the CSI-RS by the UE, so that the UE shelters state CP length, the corresponding CSI-RS sequences of the CSI-RS and/or pilot frequency design are determined. According to another aspect of the present invention there is provided a kind of base station apparatus for configuring reference signal, described device includes：
Transmitting element, CP Length Indication information for sending from CSI-RS to UE, the CP Length Indications information can be used for determining the CP length of the CSI-RS by the UE, so that the UE is according to the CP length, the corresponding CSI-RS sequences of the CSI-RS and/or pilot frequency design are determined.
According to an aspect of the present invention there is provided a kind of method for configuring reference signal, methods described includes：
UE obtains CSI-RS CP length；
The UE determines the corresponding CSI-RS sequences of the CSI-RS and pilot frequency design according to the CP length.
According to another aspect of the present invention there is provided a kind of UE for configuring reference signal, the UE includes：
Acquiring unit, the CP length for obtaining CSI-RS；
Determining unit, for the CP length obtained according to the acquiring unit, determines the corresponding CSI-RS sequences of the CSI-RS and pilot frequency design.
After above-mentioned technical proposal, the method and apparatus of configuration reference signal provided in an embodiment of the present invention, base station sends CSI-RS CP Length Indication information to UE, the UE can be according to the CP Length Indications information, the CP length of the CSI-RS is obtained, and then determines the corresponding CSI-RS sequences of the CSI-RS and pilot frequency design.Due in the process, CSI-RS CP length can be first determined, thus, it is possible to correctly determine the corresponding CSI-RS sequences of the CSI-RS and/or pilot frequency design, and then be properly received and using the CSI-RS.The accompanying drawing used required in brief description of the drawings embodiment or description of the prior art is briefly described, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it can also obtain other attached according to these accompanying drawings Figure.
Fig. 1 is the flow chart of the method for configuration reference signal provided in an embodiment of the present invention；
The flow chart of one embodiment of the method for the configuration reference signal that Fig. 2 provides for the present invention；The flow chart of another embodiment of the method for the configuration reference signal that Fig. 3 provides for the present invention；The flow chart of the another embodiment of the method for the configuration reference signal that Fig. 4 provides for the present invention；Fig. 5 is the structured flowchart of the base station apparatus of configuration reference signal provided in an embodiment of the present invention；Fig. 6 A are the UE of configuration reference signal provided in an embodiment of the present invention structured flowchart；Fig. 6 B are the structured flowchart of the acquiring unit shown in Fig. 6 A.Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme to the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, all other embodiment that those of ordinary skill in the art are obtained on the premise of creative work is not made belongs to the scope of protection of the invention.
The embodiment of the present invention provides a kind of method for configuring reference signal, and methods described is based on base station and described, including：
Base station sends CSI-RS CP Length Indication information to UE, the CP Length Indications information can be used for determining the CP length of the CSI-RS by the UE, so that the UE shelters state CP length, the corresponding CSI-RS sequences of the CSI-RS and/or pilot frequency design are determined.
Wherein, CP length of the CP Length Indications information directly or indirectly to indicate CSI-RS.The CP Length Indications information includes：The corresponding CP length of the CSI-RS, cell ID of the CSI-RS respective cells etc..
Base station can send CSI-RS CP Length Indication information to UE in a variety of ways.Specifically, a kind of mode is each channel condition information-reference signal corresponding circulating prefix-length configured information of the base station at least one channel condition information-reference signal at least one described channel condition information-reference signal of user equipment transmission, another way can be that the mode of bitmap mapping, i.e. base station are sent in the way of bitmap mapping to the UE CSI-RS CP Length Indication information.
The method of configuration reference signal provided in an embodiment of the present invention, base station sends CSI-RS CP Length Indication information to UE, the UE can be according to the CP Length Indications information, the CP length of the CSI-RS is obtained, and then determines the corresponding CSI-RS sequences of the CSI-RS and pilot frequency design.Due in the process, CSI-RS CP length can be first determined, thus, it is possible to correctly determine the corresponding CSI-RS sequences of the CSI-RS and/or pilot frequency design, and then be properly received and using the CSI-RS.Accordingly, as shown in Fig. 1, the embodiment of the present invention also provides a kind of method for configuring reference signal, and methods described is based on UE and described, including：
11, UE obtains CSI-RS CP length.
Wherein, UE can obtain CSI-RS CP length informations in a variety of ways.When the CSI-RS is that the base station indicates a CSI-RS of CP length to the UE, the first CSI-RS that UE can be issued according to base station CP Length Indications information determines the corresponding CP length of the first CSI-RS.When the CSI-RS is that the base station does not indicate two CSI-RS of CP length to the UE, UE is using CP length of the corresponding CP length of the first signal as the 2nd CSI-RS；Or, UE determines that the CP length of the 2nd CSI-RS is conventional cyclic prefix length；Or, UE determines that the CP length of the 2nd CSI-RS is extended cyclic prefix length；Or, UE determines that the CP length CP length corresponding with main serving cell of the 2nd CSI-RS is identical.
Wherein, first signal can include the corresponding signal of the corresponding down control channel of main serving cell, the corresponding synchronizing signal of main serving cell, the corresponding common pilot signal of main serving cell.
12nd, the UE determines the corresponding CSI-RS sequences of the CSI-RS and/or pilot frequency design according to the CP length informations.
The method of configuration reference signal provided in an embodiment of the present invention, base station sends CSI-RS CP Length Indication information to UE, the UE can be according to the CP Length Indications information, the CP length of the CSI-RS is obtained, and then determines the corresponding CSI-RS sequences of the CSI-RS and pilot frequency design.Due in the process, can first determine CSI-RS CP Length, thus, it is possible to correctly determine the corresponding CSI-RS sequences of the CSI-RS and/or pilot frequency design, and then is properly received and using the CSI-RS.
One step explanation.It is also noted that, it is set forth below for embodiment be the present invention a part of embodiment, those skilled in the art can be easy to expect other embodiment, they are within by content of the present invention.
The following examples 1 and embodiment 2 for base station to UE send be the first CSI-RS situation, the first CSI-RS refers to that the base station notifies the CSI-RS of CP length informations to the UE in embodiments of the present invention.Embodiment 3 for base station to UE send be the first CSI-RS and the 2nd two kinds of CSI-RS of CSI-RS situation, the 2nd CSI-RS refer in embodiments of the present invention the base station to the UE notify CP length informations CSI-RS.
Embodiment 1
The present embodiment is applied to base station and is directed to each CSI-RS for being sent to UE, and the situation of CP Length Indication information is all directly sent to the UE.Specifically, as shown in Fig. 2 the method for the configuration reference signal that the present embodiment is provided includes：
21st, base station sends multiple CSI-RS to UE, and sends the corresponding CP configured informations of the CSI-RS to the UE for each CSI-RS in the multiple CSI-RS, and the CP configured informations include the CP length informations of the CSI-RS.
Alternatively, the CP configured informations may also include other CP relevant informations of the CSI-RS, such as CP format informations.
22nd, the UE receives the corresponding CP configured informations of the CSI-RS, and according to the CP configured informations, determines the CP length of the CSI-RS.
Specifically, due to including the CP length informations of the CSI-RS in the CP configured informations, thus, UE can directly determine the CP length of the CSI-RS after the CP configured informations are received.
Optionally, base station can be for notifying to notify the corresponding CP length informations of the CSI-RS to each CSI-RS in UE CSI-RS subset, and for notifying other CSI-RS to UE outside subset, then notify these CSI-RS of UE are unified to use routine CP or expansion Open up CP.
Optionally, when the CP configured informations also include other CP relevant informations of the CSI-RS（Such as CP format informations）When, the UE receives the corresponding CP configured informations of the CSI-RS, and according to the CP configured informations, determines other CP relevant parameters information of the CSI-RS, such as CP format informations.
23rd, the UE determines the corresponding CSI-RS sequences of the CSI-RS and/or pilot frequency design according to the CSI-RS of determination CP length.
Specifically, it is determined that following CSI-RS sequences generation formula can be used in the corresponding CSI-RS sequences of CSI-RS：
Cinit = 21。 · (7 · ("s + 1)+ / + 1)· (2 J + 1)+ 2 · + NCPOr write as cmit = f(Ncp,...)
ΆΤι is for conventional CP
Ncv= <— Shang
For extension CP wherein, X represents CSI-RS parameter to 1 θ, and the parameter includes but is not limited to cell ID. CinitRepresent in each OFDM (Orthogonal Frequency Division Multiplexing, OFDM）The status information started for initializing pseudo random sequence maker of symbol, nsThe time-gap number in radio frames is represented ,/representing that the OFDM symbol in time slot is numbered, Nc represents CP length correspondence parameter.
Meanwhile, can the corresponding pilot frequency designs of determination CSI-RS specific as follows：
If 1) the corresponding CP of the CSI-RS are routine CP, corresponding pilot frequency design is found from the corresponding CSI-RS pilot frequency set of conventional CP according to the pilot frequency design of CSI-RS numbering；
If 2) the corresponding CP of the CSI-RS are extension CP, corresponding pilot frequency design is found from the corresponding CSI-RS pilot frequency set of extension CP according to correspondence CSI-RS pilot frequency design numbering.
The method of configuration reference signal provided in an embodiment of the present invention, base station sends CSI-RS CP Length Indication information to UE, the UE can be according to the CP Length Indications information, the CP length of the CSI-RS is obtained, and then determines the corresponding CSI-RS sequences of the CSI-RS and pilot frequency design.Due in the process, CSI-RS CP length can be first determined, thus, it is possible to correctly determine the corresponding CSI-RS sequences of the CSI-RS and/or lead Frequency pattern, and then be properly received and using the CSI-RS.Embodiment 2
The present embodiment is applied to base station and is directed to each CSI-RS for being sent to UE, the situation of the cell ID of cell corresponding to the CSI-RS is all sent to the UE, i.e., the CP Length Indication information using the cell ID of cell corresponding to the CSI-RS as the CSI-RS.Specifically, as shown in figure 3, the method for the configuration reference signal that the present embodiment is provided includes：
31, base station sends multiple CSI-RS to UE, and the corresponding CP configured informations of the CSI-RS are sent to the UE for each CSI-RS in the multiple CSI-RS, the CP configured informations include the cell ID of cell corresponding to the CSI-RS（CP Length Indication information）.
32nd, the UE receives the corresponding CP configured informations of the CSI-RS, and according to corresponding to the CSI-RS included in the CP configured informations cell cell ID, determine the CP length of the cell.
33rd, the UE determines that the CP length of the CSI-RS is the corresponding CP length of the cell.
Optionally, when the CP configured informations may also include other CP relevant informations of the CSI-RS, such as CP format informations, the UE receives the corresponding CP configured informations of the CSI-RS, and according to corresponding to the CSI-RS included in the CP configured informations cell cell ID, determine other CP relevant parameters information CP relevant parameters corresponding with the cell of the CSI-RS（Such as CP format informations）It is identical.
34th, the UE determines the corresponding CSI-RS sequences of the CSI-RS and/or pilot frequency design according to the CSI-RS of determination CP length.
Wherein it is determined that CSI-RS sequences and the concrete mode of pilot frequency design can refer to embodiment 1.It should be noted that, in embodiments of the present invention, corresponding to the notifying user equipment CSI-RS of base station during the cell ID of cell, the CP parameters that cell corresponding to CSI-RS mentioned here is only intended to the notifying user equipment CSI-RS are consistent with the CP parameters of the cell, are not necessarily to the cell to send the cell of the CSI-RS.
The method of configuration reference signal provided in an embodiment of the present invention, base station is sent to UE CSI-RS CP Length Indication information, the UE according to the CP Length Indications information, can obtain the CP length of the CSI-RS, and then determine the corresponding CSI-RS sequences of the CSI-RS and pilot frequency design.Due in the process, CSI-RS CP length can be first determined, thus, it is possible to correctly determine the corresponding CSI-RS sequences of the CSI-RS and/or pilot frequency design, and then be properly received and using the CSI-RS.
Embodiment 3
The present embodiment includes the first CSI-RS and the 2nd CSI-RS situation suitable for multiple CSI-RS that base station is sent to UE.
As shown in figure 4, the method for the configuration reference signal that the present embodiment is provided includes：
41st, base station sends multiple CSI-RS to UE, and the multiple CSI-RS includes the first CSI-RS and the 2nd CSI-RS.
42nd, the UE receives the multiple CSI-RS, and determines the CP length of the first CSI-RS and the CP length of the 2nd CSI-RS.
Specifically, for the first CSI-RS, the CP length of the first CSI-RS is determined using the CP Length Indications information of reception；For the 2nd CSI-RS, utilize the corresponding CP length of the first signal of reception, it is used as the CP length of the 2nd CSI-RS, or, for the 2nd CSI-RS, the UE directly determines that the CP length of the 2nd CSI-RS is conventional cyclic prefix length, or, for the 2nd CSI-RS, the UE directly determines that the CP length of the 2nd CSI-RS is extended cyclic prefix length, or, for the 2nd CSI-RS, the UE determines that the CP length CP length corresponding with main serving cell of the 2nd CSI-RS is identical.
Wherein, the first signal described above includes but is not limited to the corresponding signal of the corresponding down control channel of main serving cell, the corresponding synchronizing signal of main serving cell, the corresponding common pilot signal of main serving cell.
Meanwhile, base station can be to determine the 2nd CSI-RS CP length with UE identicals mode.
43rd, the UE is according to the first CSI-RS of determination CP length and described Two CSI-RS CP length, it is corresponding to determine the corresponding CSI-RS sequences of the first CSI-RS and/or pilot frequency design, and the corresponding CSI-RS sequences of the 2nd CSI-RS and/or pilot frequency design.
Optionally, the 2nd CSI-RS corresponding CP relevant parameters can also be determined according to the corresponding other CP relevant parameters of the first signal, such as the 2nd CSI-RS other CP relevant parameters CP relevant parameters corresponding with the first signal are identical.
Determine that the concrete mode of CSI-RS sequences and pilot frequency design can refer to embodiment 1, therefore not to repeat here.
In addition, it is noted that in embodiments of the present invention, base station can be to obtain the 2nd CSI-RS CP length with UE identicals mode.Specifically, when the CSI-RS is two CSI-RS, the CP length that the base station obtains CSI-RS may include：
The base station is directed to the 2nd CSI-RS, utilize the corresponding CP length of the first signal sent to the UE, it is used as the CP length of the 2nd CSI-RS, wherein, corresponding common pilot signal of main serving cell etc. where the corresponding synchronizing signal of main serving cell, the UE where the corresponding signal of the corresponding down control channel of main serving cell where first signal may include the UE, the UE；
Or, the base station determines that the CP length of the 2nd CSI-RS is routine CP length；
Or, the base station determines that the CP length of the 2nd CSI-RS is extension CP length；
Or, the base station determines that the CP length of the 2nd CSI-RS CP length corresponding with main serving cell where the UE is identical.
The method of configuration reference signal provided in an embodiment of the present invention, base station sends CSI-RS CP Length Indication information to UE, the UE can be according to the CP Length Indications information, the CP length of the CSI-RS is obtained, and then determines the corresponding CSI-RS sequences of the CSI-RS and pilot frequency design.Due in the process, CSI-RS CP length can be first determined, thus, it is possible to correctly determine the corresponding CSI-RS sequences of the CSI-RS and/or pilot frequency design, and then be properly received and using the CSI-RS.
In addition, in particular, in all embodiments of the invention, base station energy Enough CP length informations come in a different manner to UE notices CSI-RS.Various modes are specific as follows：
Mode 1:Base station is directed to each CSI-RS, directly notifies the corresponding CP length informations of the CSI-RS to UE or notifies the cell ID of CP length identical cell corresponding with the CSI-RS；Mode 2:Which CSI-RS base stations notifies use routine CP or extension CP using the mode of a bitmap mapping.
For example, conventional CP can be represented with position 0, position 1 represents extension CP.If shown in ^ mouthfuls of following tables of bitmap mapping：
So, CSI-RS2/3 correspondences extension CP, and the matching convention CP of CSI-RS 1/4/5/6/7/8.Wherein CSI-RS numbering is that base station and UE are known.
When base station notifies CSI-RS CP length informations to UE, a bitmap mapping is notified（Here for 01100000).
Mode 3:Base station notifies that the CP length CP length corresponding with some cell which CSI-RS is used is identical using the mode of a bitmap mapping.
It is exemplified below, which CSI-RS CP and specified cell can be indicated with bitmap mapping（The explanation by taking cell 1 as an example herein：) CP it is identical.It can represent that CP corresponding from specified cell is different with position 0, position 1 represents that CP corresponding with specified cell is identical.If bitmap mapping is as shown in the table：
So, the corresponding CP of CSI-RS2/3 are identical with the corresponding CP of cell 1, and
The corresponding CP of CSI-RS 1/4/5/6/7/8 are different from the corresponding CP of cell 1.Wherein, CSI-RS numbering is that base station and UE are known, and specified cell therein is that base station notifies to give UE or predefined a cell, such as main serving cell or transmission PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel）The cell of RRC (Radio Resource Control, wireless heterogeneous networks) connections is set up to UE cell or with UE.
When base station notifies CSI-RS CP length informations to UE, a bitmap mapping is notified（Here for 01100000).
In mode 2 and mode 3, UE is after the bitmap mapping of base station transmission is received, you can according to the bitmap mapping implication consulted in advance, it is determined that corresponding CSI-RS CP length informations.Method with the configuration reference signal that the embodiments of the present invention are provided is corresponding, and the embodiment of the present invention also provides a kind of base station apparatus 50 for configuring reference signal, as shown in figure 5, described device 50 includes：
Transmitting element 51, CP Length Indication information for sending from CSI-RS to UE, the CP Length Indications information can be used for determining the CP length of the CSI-RS by the UE, so that the UE is according to the CP length, the corresponding CSI-RS sequences of the CSI-RS and/or pilot frequency design are determined.
Wherein, the CP Length Indications information may include：The corresponding CP length of the CSI-RS, the cell ID of the CSI-RS respective cells.
Alternatively, the transmitting element 51 is used for：The corresponding circulating prefix-length configured information of each channel condition information-reference signal at least one described channel condition information-reference signal is sent to the user equipment at least one channel condition information-reference signal, or, the circulating prefix-length configured information of channel condition information-reference signal is sent to the user equipment in the way of bitmap mapping.
The base station apparatus of configuration reference signal provided in an embodiment of the present invention, base station sends CSI-RS CP Length Indication information to UE, the UE can be according to the CP Length Indications information, the CP length of the CSI-RS is obtained, and then determines the corresponding CSI-RS sequences of the CSI-RS and pilot frequency design.Due in the process, CSI-RS CP length can be first determined, thus, it is possible to correctly determine the corresponding CSI-RS sequences of the CSI-RS and/or pilot frequency design, and then be properly received and using the CSI-RS. Method with the configuration reference signal that the embodiments of the present invention are provided is corresponding, and the embodiment of the present invention also provides a kind of UE 60 for configuring reference signal, and as shown in Fig. 6 A, the UE 60 includes：
Acquiring unit 61, the CP length for obtaining CSI-RS；
Determining unit 62, for the CSI-RS obtained according to the acquiring unit CP length, determines the corresponding CSI-RS sequences of the CSI-RS and/or pilot frequency design.
Wherein, the CSI-RS can be the first CSI-RS or the 2nd CSI-RS.In embodiments of the present invention, the first CSI-RS is the CSI-RS that the base station indicates CP length to the UE;2nd CSI-RS is the CSI-RS that the base station does not indicate CP length to the UE.
In one embodiment of the invention, the CSI-RS is the first CSI-RS, and as shown in Figure 6B, the acquiring unit 61 includes：
Receiving module 61 1, for receiving the corresponding CP Length Indications information of the first CSI-RS that base station is sent for the first CSI-RS；
Determining module 612, for the corresponding CP Length Indications information of the first CSI-RS received according to the receiving module 61 1, determines the CP length of the first CSI-RS.
Wherein, the CP Length Indications information includes：The corresponding CP length of the CSI-RS, the cell ID of the CSI-RS respective cells.
Alternatively, in one embodiment of the invention, the CP Length Indications information is the CP length of the first CSI-RS, and the determining module 612 can directly determine the CP length of the first CSI-RS.
Optionally, in one embodiment of the invention, the CP Length Indications information is the cell ID of the cell corresponding to the first CSI-RS；Now, the determining module 612 is used for：
The cell ID of cell according to corresponding to the first CSI-RS, determines the corresponding CP length of the cell；
The CP length for determining the first CSI-RS is the corresponding CP length of the cell.In another embodiment of the present invention, the CSI-RS is the 2nd CSI-RS, and now, the acquiring unit 61 is additionally operable to： For the 2nd CSI-RS, using the corresponding CP length of the first signal of reception, the CP length of the 2nd CSI-RS is used as；
Or, the CP length for determining the 2nd CSI-RS is routine CP length；Or, it is extension CP length to determine the CP length of the 2nd CSI-RS；Or, determine that the CP length CP length corresponding with main serving cell of the 2nd CSI-RS is identical.
Wherein, first signal includes the corresponding signal of the corresponding down control channel of main serving cell, the corresponding synchronizing signal of main serving cell, the corresponding common pilot signal of main serving cell.
The base station apparatus of configuration reference signal provided in an embodiment of the present invention, base station sends CSI-RS CP Length Indication information to UE, the UE can be according to the CP Length Indications information, the CP length of the CSI-RS is obtained, and then determines the corresponding CSI-RS sequences of the CSI-RS and pilot frequency design.Due in the process, CSI-RS CP length can be first determined, thus, it is possible to correctly determine the corresponding CSI-RS sequences of the CSI-RS and/or pilot frequency design, and then be properly received and using the CSI-RS.
It should be noted that channel condition information-reference signal CSI-RS in the present invention includes channel condition information-reference signal CSI-RS.
It is worth noting that, in above-mentioned base station and UE embodiments, included unit is simply divided according to function logic, but is not limited to above-mentioned division, as long as corresponding function can be realized；In addition, the specific name of each functional unit is also only to facilitate mutually distinguish, the protection domain being not intended to limit the invention.
One of ordinary skill in the art will appreciate that realizing that all or part of step in above-described embodiment method can be by program to instruct the hardware of correlation to complete, described program can be stored in a kind of computer-readable recording medium, and the storage medium can be read-only storage, disk or CD etc..
It is described above; only embodiment of the invention, but protection scope of the present invention is not limited thereto, any one skilled in the art the invention discloses technical scope in; change or replacement can be readily occurred in, should be all included within the scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.

Claims (17)

  1. Claims
    1st, a kind of method for configuring reference signal, it is characterised in that methods described includes：Base station sends the circulating prefix-length configured information of channel condition information-reference signal to user equipment, the circulating prefix-length configured information can be used for determining the circulating prefix-length of the channel condition information-reference signal by the user equipment, so that the user equipment is according to the circulating prefix-length, the corresponding channel condition information-reference signal sequence of the channel condition information-reference signal and/or pilot frequency design are determined.
    2nd, the method according to claim 1, it is characterised in that the circulating prefix-length configured information includes：The corresponding circulating prefix-length of the channel condition information-reference signal, the cell ID of the channel condition information-reference signal respective cell.
    3rd, the method according to claim 1 or 2, it is characterised in that the circulating prefix-length configured information that the base station sends channel condition information-reference signal to user equipment includes：Base station sends the corresponding circulating prefix-length configured information of each channel condition information-reference signal at least one described channel condition information-reference signal at least one channel condition information-reference signal to the user equipment, or, base station sends the circulating prefix-length configured information of channel condition information-reference signal in the way of bitmap mapping to the user equipment.
    4th, a kind of method for configuring reference signal, it is characterised in that methods described includes：User equipment obtains the circulating prefix-length of channel condition information-reference signal；
    The user equipment determines the corresponding channel condition information-reference signal sequence of the channel condition information-reference signal and/or pilot frequency design according to the circulating prefix-length.
    5th, the method according to claim 4, it is characterized in that, channel condition information-the reference signal is the first channel condition information-reference signal, first channel condition information-reference signal is channel condition information-reference signal that the base station indicates circulating prefix-length information to the user equipment, and the circulating prefix-length that the user equipment obtains channel condition information-reference signal includes：
    User equipment receives the corresponding circulating prefix-length configured information of first channel condition information-reference signal that base station is sent for the first channel condition information-reference signal；
    The user equipment determines first letter according to the circulating prefix-length configured information The circulating prefix-length of channel state information-reference signal.
    6th, the method according to claim 5, it is characterised in that the circulating prefix-length configured information is the circulating prefix-length of first channel condition information-reference signal.
    7th, the method according to claim 5, it is characterised in that the circulating prefix-length configured information is the cell ID of the cell corresponding to first channel condition information-reference signal；
    The user equipment is according to the circulating prefix-length configured information, and determining the circulating prefix-length of first channel condition information-reference signal includes：
    The cell ID of cell of the user equipment according to corresponding to first channel condition information-reference signal, determines the corresponding circulating prefix-length of the cell；
    The user equipment determines that the circulating prefix-length of first channel condition information-reference signal is the corresponding circulating prefix-length of the cell.
    8th, the method according to claim 4, it is characterized in that, channel condition information-the reference signal is second channel status information-reference signal, second channel status information-the reference signal is channel condition information-reference signal that the base station does not indicate circulating prefix-length to the user equipment, and the circulating prefix-length that the user equipment obtains channel condition information-reference signal includes：
    The user equipment is directed to second channel status information-reference signal, using the corresponding circulating prefix-length of the first signal of reception, as the circulating prefix-length of the second channel status information-reference signal,
    Or, the user equipment determines that the circulating prefix-length of the second channel status information-reference signal is conventional cyclic prefix length,
    Or, the user equipment determines that the circulating prefix-length of the second channel status information-reference signal is extended cyclic prefix length；
    Or, the user equipment determines that the circulating prefix-length circulating prefix-length corresponding with main serving cell of the second channel status information-reference signal is identical.
    9th, the method according to claim 8, first signal includes the corresponding signal of the corresponding down control channel of main serving cell, the corresponding synchronizing signal of main serving cell, the corresponding common pilot signal of main serving cell. 10th, a kind of base station apparatus for configuring reference signal, it is characterised in that described device includes：Transmitting element, circulating prefix-length configured information for sending from channel condition information-reference signal to user equipment, the circulating prefix-length configured information can be used for determining the circulating prefix-length of the channel condition information-reference signal by the user equipment, so that the user equipment is according to the circulating prefix-length, the corresponding channel condition information-reference signal sequence of the channel condition information-reference signal and/or pilot frequency design are determined.
    11, the device according to claim 10, it is characterised in that the circulating prefix-length configured information includes：The corresponding circulating prefix-length of the channel condition information-reference signal, the cell ID of the channel condition information-reference signal respective cell.
    12nd, the device according to claim 10 or 11, it is characterised in that the transmitting element is used for：The corresponding circulating prefix-length configured information of each channel condition information-reference signal at least one described channel condition information-reference signal is sent to the user equipment at least one channel condition information-reference signal, or, the circulating prefix-length configured information of channel condition information-reference signal is sent to the user equipment in the way of bitmap mapping.
    13rd, a kind of user equipment for configuring reference signal, it is characterised in that the user equipment includes：
    Acquiring unit, the circulating prefix-length for obtaining channel condition information-reference signal；Determining unit, for the circulating prefix-length of the channel condition information-reference signal obtained according to the acquiring unit, determines the corresponding channel condition information-reference signal sequence of the channel condition information-reference signal and/or pilot frequency design.
    14th, the user equipment according to claim 13, it is characterized in that, channel condition information-the reference signal is the first channel condition information-reference signal, first channel condition information-reference signal is channel condition information-reference signal that the base station indicates circulating prefix-length to the user equipment, and the acquiring unit includes：
    Receiving module, for receiving the corresponding circulating prefix-length configured information of first channel condition information-reference signal that base station is sent for the first channel condition information-reference signal；
    Determining module, for the first channel condition information-ginseng received according to the receiving module The corresponding circulating prefix-length configured information of signal is examined, the circulating prefix-length of first channel condition information-reference signal is determined.
    15th, the user equipment according to claim 14, it is characterised in that the circulating prefix-length configured information is the circulating prefix-length of first channel condition information-reference signal.
    16th, the user equipment according to claim 14, it is characterised in that the circulating prefix-length configured information is cell mark i of the cell corresponding to first channel condition information-reference signal；
    The determining module is used for：
    The cell ID of cell according to corresponding to first channel condition information-reference signal, determines the corresponding circulating prefix-length of the cell；
    The circulating prefix-length for determining first channel condition information-reference signal is the corresponding circulating prefix-length of the cell.
    17th, the user equipment according to claim 13, it is characterized in that, channel condition information-the reference signal is second channel status information-reference signal, second channel status information-the reference signal is channel condition information-reference signal that the base station does not indicate circulating prefix-length to the user equipment, and the acquiring unit is additionally operable to：
    For second channel status information-reference signal, using the corresponding circulating prefix-length of the first signal of reception, the circulating prefix-length of the second channel status information-reference signal is used as；
    Or, the circulating prefix-length for determining the second channel status information-reference signal is conventional cyclic prefix length；
    Or, the circulating prefix-length for determining the second channel status information-reference signal is extended cyclic prefix length；
    Or, the user equipment determines that the circulating prefix-length circulating prefix-length corresponding with main serving cell of the second channel status information-reference signal is identical.
    18th, the user equipment according to claim 17, first signal includes the corresponding signal of the corresponding down control channel of main serving cell, the corresponding synchronizing signal of main serving cell, the corresponding common pilot signal of main serving cell.
CN201280000645.4A 2012-05-11 2012-05-11 Method and device for configuring reference signal Pending CN103563321A (en)

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