CN102404689B - Receive and send the method and apparatus of CSI-RS configuration information - Google Patents

Receive and send the method and apparatus of CSI-RS configuration information Download PDF

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CN102404689B
CN102404689B CN201010281364.3A CN201010281364A CN102404689B CN 102404689 B CN102404689 B CN 102404689B CN 201010281364 A CN201010281364 A CN 201010281364A CN 102404689 B CN102404689 B CN 102404689B
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described
csi
rs
configuration information
rs configuration
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CN201010281364.3A
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CN102404689A (en
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苏昕
徐婧
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电信科学技术研究院
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Abstract

The invention discloses the method and apparatus receiving and send CSI-RS configuration information.Wherein, the method for reseptance of CSI-RS configuration information comprises the following steps: user terminal receives the CSI-RS configuration information sent by the forms of broadcasting; And user terminal determines the position of CSI-RS in frame according to CSI-RS configuration information, wherein, CSI-RS configuration information has joint instructions.The sending method of CSI-RS configuration information comprises the following steps: base station sends CSI-RS configuration information, and wherein, CSI-RS configuration information has joint instructions, for determining the position of CSI-RS in frame.

Description

Receive and send the method and apparatus of CSI-RS configuration information

Technical field

The present invention relates to the communications field, particularly relate to the method and apparatus receiving and send CSI-RS configuration information.

Background technology

MIMO (multi-input multiple-output, multiple-input and multiple-output) technology, as the physical layer multi-antenna technology of important raising transmission quality and efficiency, is played an important role in communication system of new generation.LTE (long term evolution, Long Term Evolution) system supports transmit diversity, the multiple MIMO technology such as space multiplexing technique and beam shaping (BF, Beam forming).Along with the further evolution of LTE standard, system will support more antenna port (as 8 antenna ports), and MU-MIMO (multi-user MIMO, multiuser MIMO) technology also can be enhanced.In order to play MIMO technical advantage better, pilot configuration also there occurs corresponding change.(namely descending pilot frequency is divided into demodulation pilot frequency, DMRS (demodulation reference signal, demodulated reference signal)) and measurement pilot frequency is (namely, CSI-RS (channel state indication reference signal, channel status instruction reference signal)), be respectively used to separate mediation channel measurement.CSI-RS is the pilot configuration that a kind of periodicity sends, and in a subframe, have multiple pattern (pattern) optional.

Introduce the measurement mechanism based on CSI-RS in LTE-A, UE needs according to generating the reporting informations such as CQI/PMI/RI to the measurement of CSI-RS.Determine will to adopt the CSI-RS pattern shown in Fig. 1 and Fig. 2 respectively when common (normal) CP and expansion (extended) CP in 3GPP RAN1 #61bis meeting.

As can be seen from Fig. 1 and Fig. 2, for identical CSI-RS port number, also there is multiple different CSI-RS pattern.In addition different from the CRS that LTE Rel-8/9 uses (carrier-class route system), CSI-RS is comparatively sparse in the distribution of time domain, frequency domain, and its cycle (in units of subframe) also can configure.For identical CSI-RS pattern, also may there are multiple choices in time domain skew (in units of subframe) of its original position.

Give the correct time on LTE Rel-10 UE (User Equipment, user terminal) carries out, need to measure the channel of its Serving cell based on CSI-RS, therefore UE must be made to know the CSI-RS configuration parameter that this community uses by certain mode.In the application scenarios of multi-plot joint process, in order to ensure that UE can estimate the channel of cooperation cell, also need to indicate the configuration parameter of adjacent cell CSI-RS.

In addition according to network design situation, some Rel-10 community should be allowed to close CSI-RS.Therefore also need to be indicated by the on off state of certain mode to CSI-RS.

In CoMP transmission, each cooperative base station needs the CSI of the multiple communities reported according to UE to determine the pretreatment mode of downlink transfer, and UE then needs the channel status measuring each community according to the CSI-RS of multiple community.In the application scenarios of multi-cell cooperating transmission, in order to ensure that UE can estimate the channel of cooperation cell, also need to indicate the configuration parameter of adjacent cell CSI-RS.

In order to ensure the accuracy measured channels of neighboring areas, the concept of muting (mourning in silence) in LTE-A, may be introduced.In this case, overlapping with adjacent area CSI-RS in downlink transfer RE (resourceelement, Resource Unit) may not send any signal (punching).The pattern of Muting can bring impact to rate-matched and resource mapping, in order to ensure the reliability of downlink transfer, even if for the UE of not CoMP participating, also need the pattern knowing muting when it carries out Data Detection.

But, at present also not to the technical scheme that CSI-RS relevant information indicates.

Summary of the invention

Consider the problems referred to above and make the present invention.

According to an aspect of the present invention, provide a kind of method of reseptance of CSI-RS configuration information, the method comprises the following steps: user terminal receives the CSI-RS configuration information sent by the forms of broadcasting; And user terminal determines the position of CSI-RS in frame according to CSI-RS configuration information, wherein, CSI-RS configuration information has joint instructions.

According to a further aspect in the invention, provide a kind of sending method of CSI-RS configuration information, the method comprises the following steps: base station sends CSI-RS configuration information, and wherein, CSI-RS configuration information has joint instructions, for determining the position of CSI-RS in frame.

According to another aspect of the invention, provide a kind of receiving system of CSI-RS configuration information, this device comprises: receiver module, for being received the CSI-RS configuration information sent with the forms of broadcasting by user terminal; And position determination module, for determining the position of CSI-RS in frame by user terminal according to CSI-RS configuration information, wherein, CSI-RS configuration information has joint instructions.

According to another aspect of the invention, provide a kind of dispensing device of CSI-RS configuration information, this device comprises: sending module, for sending CSI-RS configuration information by base station, wherein, CSI-RS configuration information has joint instructions, for determining the position of CSI-RS in frame.

By above-mentioned four schemes, can to the configuration information of UE joint instructions about the position of CSI-RS in frame.

According to another aspect of the invention, provide a kind of method of reseptance of CSI-RS configuration information, the method comprises the following steps: user terminal receives the CSI-RS configuration information sent by the forms of broadcasting, wherein, CSI-RS configuration information has joint instructions, is used to indicate on off state and the port numbers of CSI-RS.

According to another aspect of the invention, provide a kind of sending method of CSI-RS configuration information, the method comprises the following steps: base station sends CSI-RS configuration information, wherein, CSI-RS configuration information has joint instructions, is used to indicate on off state and the port numbers of CSI-RS.

According to another aspect of the invention, provide a kind of receiving system of CSI-RS configuration information, this device comprises: receiver module, for being received the CSI-RS configuration information sent with the forms of broadcasting by user terminal, wherein, CSI-RS configuration information has joint instructions, is used to indicate on off state and the port numbers of CSI-RS.

According to another aspect of the invention, provide a kind of dispensing device of CSI-RS configuration information, this device comprises: sending module, for sending CSI-RS configuration information by base station, wherein, CSI-RS configuration information has joint instructions, is used to indicate on off state and the port numbers of CSI-RS.

By above-mentioned four schemes, can to UE joint instructions about whether CSI-RS exists and the configuration information of port numbers, and then UE can be made to carry out the determination of CSI-RS address.

According to another aspect of the invention, provide a kind of transfer approach of CSI-RS configuration information, the method comprises the following steps: Serving cell identifies alternative cooperation cell; Serving cell obtains the CSI-RS configuration information with joint instructions of alternative cooperation cell; And the mark of alternative cooperation cell and corresponding CSI-RS configuration information to be sent to the user terminal in Serving cell by Serving cell with the forms of broadcasting.

By an above-mentioned scheme, the CSI-RS configuration information of multiple Lin Qu can be indicated to UE.

Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in write specification, claims and accompanying drawing and obtain.

Accompanying drawing explanation

Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:

Fig. 1 shows the schematic diagram of CSI-RS pattern of 2 ports under normal CP condition, 4 ports, 8 ports.

Fig. 2 shows the schematic diagram of CSI-RS pattern of 2 ports under extended CP condition, 4 ports, 8 ports.

Fig. 3 shows the flow chart of the method for reseptance of CSI-RS configuration information according to an embodiment of the invention.

Fig. 4 shows the flow chart of the sending method of CSI-RS configuration information according to an embodiment of the invention.

Fig. 5 shows the flow chart of the method for reseptance of CSI-RS configuration information according to another embodiment of the present invention.

Fig. 6 shows the flow chart of the sending method of CSI-RS configuration information according to another embodiment of the present invention.

Fig. 7 shows the flow chart of the transfer approach of CSI-RS configuration information according to an embodiment of the invention.

Fig. 8 shows the reception of CSI-RS configuration information according to an embodiment of the invention, the block diagram of dispensing device.

Embodiment

Embodiments of the invention are described in detail below in conjunction with accompanying drawing.

Fig. 3 shows the flow chart of the method for reseptance of CSI-RS configuration information according to an embodiment of the invention, and Fig. 4 shows the flow chart of the sending method of CSI-RS configuration information according to an embodiment of the invention.

In the above-mentioned methods, CSI-RS configuration information indicates the positional information of CSI-RS.As shown in Figure 3, the method for reseptance of end side comprises: S301, and user terminal receives the CSI-RS configuration information sent by the forms of broadcasting; S303, user terminal determines the position of CSI-RS in frame according to CSI-RS configuration information, and wherein, CSI-RS configuration information has joint instructions.As shown in Figure 4, the sending method of network side comprises: S401, and base station sends CSI-RS configuration information, and wherein, CSI-RS configuration information has joint instructions, for determining the position of CSI-RS in frame.

Wherein, when not by broadcasting direct acquisition configuration information, the CSI-RS configuration information received by user terminal is in advance by (step S400) that X2 interface obtains alternately, and CSI-RS configuration information is used to indicate cycle and the skew of CSI-RS.

Particularly, suppose the CSI-RS cycle can from set T1, T2 ..., choose in TN}, wherein Ti (i ∈ 1 ..., N}) positive integer for being greater than zero, its unit is ms.For any one period assignment Ti (i ∈ 1 ..., N}), note CSI-RS side-play amount is Δ iiunit be ms, its may span be 0≤Δ i≤ T i-1.Within the scope of this, the subframe position of some correspondence possible can not be used for CSI-RS transmission.Therefore the side-play amount set corresponding to the subframe that can be used for CSI-RS transmission is designated as its size is P i(j=1 ..., P i).The combination of all cycles and side-play amount is expressed as { (T 1, { Δ 1) ..., (T n, { Δ n), then need cycle of being distinguished and side-play amount number of combinations to be this programme uses joint instructions are carried out to cycle of CSI-RS and skew.Network side is to be numbered system-frame as the benchmark of mark CSI-RS skew, cycle and offset configuration distinguish Ti and Δ itime, from corresponding subframe starts, with T ifor the cycle exists in corresponding each subframe according to certain pattern shown in Fig. 1,2 send CSI-RS (wherein k=0,1 ...).

For the UE in Serving cell, the concrete steps of this method can be expressed as:

Base station sends the configuration information of CSI-RS by SIB to the terminal in its service area with the forms of broadcasting, wherein cycle of CSI-RS and offset parameter by joint instructions;

UE receives cell broadcast service, and Ti corresponding to cycle of CSI-RS and skew indication information and Δ ijudge the position of CSI-RS: from corresponding subframe starts, with T ifor the cycle exists corresponding each subframe sends (wherein k=0,1 ...).

For the UE needing in other communities to measure adjacent area, can X2 interface mutual above-mentioned information between the base stations be passed through, and be informed the UE needing to measure adjacent area by SIB with the forms of broadcasting.

In order to realize above-mentioned indication scheme, need pre-defined indication information and CSI-RS cycle and the corresponding relation between offseting.Provide an example of this corresponding relation below.

Suppose existence 3 kinds of CSI-RS period assignment: { 5,10,20}ms.For the various cycle, corresponding side-play amount can be set as respectively:

T 1=5ms,Δ 1={0,1,2,3,4},P 1=5

T 2=10ms,Δ 2={0,1,...,9},P 2=10

T 3=20ms,Δ 3={0,1,...,19},P 3=20

Table 1 shows the joint instructions Examples of information of CSI-RS cycle and skew.As shown in table 1, this situation needs 6bit information to carry out joint instructions to CSI-RS cycle and skew altogether.

Table 1

By such scheme, mobile terminal can determine the position of CSI-RS in frame, to receive it according to the CSI-RS configuration information received.

Fig. 5 shows the flow chart of the method for reseptance of CSI-RS configuration information according to another embodiment of the present invention, and Fig. 6 shows the flow chart of the sending method of CSI-RS configuration information according to another embodiment of the present invention.

In the above-mentioned methods, CSI-RS configuration information indicates the information such as switch, port of CSI-RS.As shown in Figure 5, the method for reseptance of end side comprises: S501, and user terminal receives the CSI-RS configuration information sent by the forms of broadcasting, and wherein, CSI-RS configuration information has joint instructions, is used to indicate on off state and the port numbers of CSI-RS; S503, user terminal determines the position of CSI-RS in frame according to CSI-RS configuration information, and wherein, CSI-RS configuration information is also used to indicate cycle and the skew of CSI-RS.As shown in Figure 6, the sending method of network side comprises: S601, and base station sends CSI-RS configuration information, and wherein, CSI-RS configuration information has joint instructions, is used to indicate on off state and the port numbers of CSI-RS.

Wherein, when not by broadcasting direct acquisition configuration information, CSI-RS configuration information received by user terminal is in advance by (S600) that X2 interface obtains alternately, and CSI-RS configuration information corresponds to the on off state of CSI-RS and the coding of port numbers.

Particularly, suppose with the on off state of independent signaling instruction CSI-RS, then to need increase by comprise the RRC signaling of two states, for representing whether this community transmits CSI-RS.In the scheme of instruction separately, the on off state of CSI-RS is as shown in table 2.

Table 2

CSI-RS on off state indication information The on off state of CSI-RS State 1 Send State 2 Close

The on off state indication information of CSI-RS sends to the UE of Serving cell with the form of broadcast by SIB, can also give other communities, and be broadcast to the UE measured adjacent area by other communities by SIB by X2 interface by this message notice.

If carry out joint instructions to the switch of CSI-RS and port number, first need the combinations of states determining CSI-RS switch and available period.Suppose that the CSI-RS periodic packets that may use in Rel-10 is containing N kind situation, be designated as T1, T2 ..., TN}, then the combination in CSI-RS switch and cycle can be as shown in Table 3.Wherein comprise N kind state and represent that CSI-RS state is for open and the cycle is T respectively i(1≤i≤N), also comprises this community of a kind of state representation and does not transmit CSI-RS.

Table 3

N state+1 Close

The switch of CSI-RS and cycle indication information send to the UE of Serving cell with the form broadcasted by SIB, can also give other communities, and be broadcast to the UE measured adjacent area by other communities by SIB by X2 interface by this message notice.

Suppose that the CSI-RS cycle that may adopt in LTE Rel-10 is for { 5,10,20}ms tri-kinds of situations, then the joint instructions information of CSI-RS switch and port number can be represented by table 4.

Table 4

The combinations of states of CSI-RS switch and port number The switch of CSI-RS and port number State 1 CSI-RS sends, and the cycle is 5ms State 2 CSI-RS sends, and the cycle is 10ms State 3 CSI-RS sends, and the cycle is 20ms State 4 Close

If carry out joint instructions to the switch of CSI-RS and port number, then first need the combinations of states determining CSI-RS switch and port number.Suppose that the CSI-RS port number that may use in Rel-10 comprises N kind situation, be designated as then the combination of CSI-RS switch and port number can be as shown in Table 5.Wherein comprise N kind state and represent that CSI-RS state is for open and port number is respectively also comprise this community of a kind of state representation and do not transmit CSI-RS.

Table 5

The switch of CSI-RS and port number indication information send to the UE of Serving cell with the form broadcasted by SIB, can also give other communities, and be broadcast to the UE measured adjacent area by other communities by SIB by X2 interface by this message notice.

Suppose that the CSI-RS port number that may adopt in LTE Rel-10 is for { 2,4,8} tri-kinds of situations, then the joint instructions information of CSI-RS switch and port number can be represented by table 6.

Table 6

The combinations of states of CSI-RS switch and port number The switch of CSI-RS and port number State 1 CSI-RS sends, and port number is 2 State 2 CSI-RS sends, and port number is 4 State 3 CSI-RS sends, and port number is 8 State 4 Close

By such scheme, mobile terminal can determine whether there is CSI-RS according to the CSI-RS configuration information received, and the port information of CSI-RS, thus can determine its position in frame further, to receive it.

Fig. 7 shows the flow chart of the transfer approach of CSI-RS configuration information according to an embodiment of the invention.

As shown in Figure 7, the transfer approach of CSI-RS configuration information comprises: S701, Serving cell identifies alternative cooperation cell (also referred to as " potential cooperation cell ", that is, having the ability to carry out cooperating with Serving cell also can according to the community arranging selection and whether cooperate with it); S703, Serving cell obtains the CSI-RS configuration information with joint instructions of alternative cooperation cell; And S705, the mark of alternative cooperation cell and corresponding CSI-RS configuration information to be sent to the user terminal in Serving cell by Serving cell with the forms of broadcasting.

Particularly, this programme can realize the instruction of the muting pattern to downlink transfer, and can indicate other community CSI-RS configuration information needing carry out measuring to the UE being in CoMP transmission.

For convenience of description, the set that the alternative cooperation cell of cell i is formed is designated as C i.By C ithe intersection of the CSI-RS pattern that each community uses is called that muting gathers

S muting = ∪ j ∈ C i S j

Wherein S jrepresent the RE set in the j of community shared by CSI-RS, this set is determined jointly by parameters such as the CSI-RS port number of community j, pattern, cycle and time domain skews.

For arbitrary cell i, the concrete steps of this programme can be expressed as:

1, the alternative cooperation cell set C of cell i setting oneself i, and respectively each alternative cooperation cell is identified with unique label in cell i, by community j (j ∈ C i) mark in cell i is designated as

2, for C iin be subordinated to the community of same base station with cell i, directly can obtain its CSI-RS configuration parameter; For C iin do not belong to the community of same base station with cell i, obtain its CSI-RS configuration parameter by X2 interface.Wherein CSI-RS configuration parameter, comprises CSI-RS port number, pattern, cycle and time domain skew etc., uniquely can determine according to this configuration information the RE set that CSI-RS takies;

3, cell i is by broadcasting the mark of each alternative cooperation cell and corresponding CSI-RS configuration parameter informs the UE of this community.Need in this process to ensure that UE can determine and the corresponding relation between CSI-RS configuration parameter;

4, for the UE of the entirety in cell i, can according to S j, j ∈ C iand parameters of rate matching when downlink resource mapping mode and downlink transfer is determined (step 707);

5, for the UE being configured to CoMP (coordinated multipoint transmission) transmission means, C is gathered by special high-level signaling to its notice by cell i ithe mark of community in cell i of middle CoMP participating transmission;

6, for the UE being configured to CoMP transmission mode, can according to step 5) information that obtains knows its CSI-RS set of carrying out needed in CoMP transmission measuring, CoMP UE measures the CSI of cooperation cell according to this set and reports.

If the alternative cooperation cell set C of cell i ichange, then need to re-execute above-mentioned steps.

By such scheme, just can realize indicating the CSI-RS configuration information of multiple cell, particularly for the community of CoMP participating transmission.

Fig. 8 shows the reception of CSI-RS configuration information according to an embodiment of the invention, the block diagram of dispensing device.Wherein, receiving system 801 at least comprises: receiver module 803, for being received the CSI-RS configuration information sent with the forms of broadcasting by user terminal; Position determination module 805, for determining the position of CSI-RS in frame by user terminal according to CSI-RS configuration information.And in dispensing device, at least comprise sending module 807, for sending CSI-RS configuration information by base station, wherein, CSI-RS configuration information has joint instructions, it indicates the information of CSI-RS on off state, port, cycle and skew etc., thus UE can be enable to determine the position of CSI-RS in frame according to these information.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (21)

1. a method of reseptance for channel status instruction reference signal CSI-RS configuration information, is characterized in that, said method comprising the steps of:
User terminal receives the CSI-RS configuration information sent by the forms of broadcasting; And
Described user terminal determines the position of CSI-RS in frame according to described CSI-RS configuration information,
Wherein, described CSI-RS configuration information has joint instructions, and described joint instructions are used to indicate on off state and port numbers, and
Described joint instructions are also used to indicate cycle and the skew of described CSI-RS,
Described position is determined by following formula:
Position=N × 10+ Δ i+ k × T i,
Wherein, N is the reference position in frame, T ithe described cycle, Δ ibe described skew, k is natural number.
2. method according to claim 1, is characterized in that, the described CSI-RS configuration information received by described user terminal is obtained alternately by X2 interface in advance.
3. method according to claim 1, is characterized in that, described joint instructions are the codings corresponding to the on off state of described CSI-RS, port numbers, cycle and skew.
4. method according to claim 1, is characterized in that, described broadcast is completed by system information block.
5. a sending method for channel status instruction reference signal CSI-RS configuration information, is characterized in that, said method comprising the steps of:
Base station sends CSI-RS configuration information,
Wherein, described CSI-RS configuration information has joint instructions, and for determining the position of CSI-RS in frame, described joint instructions are used to indicate on off state and port numbers, and
Described joint instructions are also used to indicate cycle and the skew of described CSI-RS,
Described position is determined by following formula:
Position=N × 10+ Δ i+ k × T i,
Wherein, N is the reference position in frame, T ithe described cycle, Δ ibe described skew, k is natural number.
6. method according to claim 5, is characterized in that,
Described base station sends described CSI-RS configuration information by the forms of broadcasting, or
Described base station is by the mutual described CSI-RS configuration information of X2 interface.
7. method according to claim 5, is characterized in that, described joint instructions are the codings corresponding to the on off state of described CSI-RS, port numbers, cycle and skew.
8. method according to claim 6, is characterized in that, described broadcast is completed by system information block.
9. a transfer approach for channel status instruction reference signal CSI-RS configuration information, is characterized in that, said method comprising the steps of:
Serving cell identifies alternative cooperation cell;
Described Serving cell obtains the CSI-RS configuration information with joint instructions of described alternative cooperation cell;
Wherein, described joint instructions are used to indicate on off state and port numbers, and
Described joint instructions are also used to indicate cycle and the skew of described CSI-RS,
Wherein, described CSI-RS configuration information is for determining the position of CSI-RS in frame, and described position is determined by following formula:
Position=N × 10+ Δ i+ k × T i,
Wherein, N is the reference position in frame, T ithe described cycle, Δ ibe described skew, k is natural number; And
The mark of described alternative cooperation cell and corresponding described CSI-RS configuration information to be sent to the user terminal in described Serving cell by described Serving cell with the forms of broadcasting.
10. method according to claim 9, is characterized in that, described user terminal determines the parameters of rate matching of downlink resource mapping mode and downlink transfer according to following formula,
S j, j ∈ C iand S muting = ∪ j ∈ C i S j ,
Wherein, S jrepresent that the Resource Unit RE in alternative cooperation cell j shared by CSI-RS gathers, C irepresent that alternative cooperation cell is gathered, S mutingrepresent the intersection of the CSI-RS pattern that Zhong Ge community, alternative cooperation cell uses.
11. methods according to claim 9, it is characterized in that, for the user terminal being configured to coordinated multipoint transmission mode, described in the mark participating in the community of coordinated multipoint transmission to be sent to by special high-level signaling by described Serving cell, be configured to the user terminal of coordinated multipoint transmission mode in described alternative cooperation cell.
12. methods according to claim 11, it is characterized in that, the described user terminal being configured to coordinated multipoint transmission mode obtains in coordinated multipoint transmission the CSI-RS set needing to carry out measuring according to the mark participating in the community of coordinated multipoint transmission in described alternative cooperation cell, and measures described CSI-RS set and report.
13. methods according to claim 9, is characterized in that,
When described alternative cooperation cell and described Serving cell are subordinated to same base station, described Serving cell directly obtains the CSI-RS configuration information with joint instructions of described alternative cooperation cell,
When described alternative cooperation cell and described Serving cell are not subordinated to same base station, described Serving cell obtains the CSI-RS configuration information with joint instructions of described alternative cooperation cell by X2 interface.
The receiving system of 14. 1 kinds of channel status instruction reference signal CSI-RS configuration information, it is characterized in that, described device comprises:
Receiver module, for receiving the CSI-RS configuration information sent with the forms of broadcasting by user terminal; And
Position determination module, for determining the position of CSI-RS in frame by described user terminal according to described CSI-RS configuration information,
Wherein, described CSI-RS configuration information has joint instructions, and described joint instructions are used to indicate on off state and port numbers, and
Described joint instructions are also used to indicate cycle and the skew of described CSI-RS,
Described position is determined by following formula:
Position=N × 10+ Δ i+ k × T i,
Wherein, N is the reference position in frame, T ithe described cycle, Δ ibe described skew, k is natural number.
15. devices according to claim 14, is characterized in that, the described CSI-RS configuration information received by described user terminal is obtained alternately by X2 interface in advance.
16. devices according to claim 14, is characterized in that, described joint instructions are the codings corresponding to the on off state of described CSI-RS, port numbers, cycle and skew.
17. devices according to claim 14, is characterized in that, described broadcast is completed by system information block.
The dispensing device of 18. 1 kinds of channel status instruction reference signal CSI-RS configuration information, it is characterized in that, described device comprises:
Sending module, for sending CSI-RS configuration information by base station,
Wherein, described CSI-RS configuration information has joint instructions, and for determining the position of CSI-RS in frame, described joint instructions are used to indicate on off state and port numbers, and
Described joint instructions are also used to indicate cycle and the skew of described CSI-RS,
Described position is determined by following formula:
Position=N × 10+ Δ i+ k × T i,
Wherein, N is the reference position in frame, T ithe described cycle, Δ ibe described skew, k is natural number.
19. devices according to claim 18, is characterized in that,
Described base station sends described CSI-RS configuration information by the forms of broadcasting, or
Described base station is by the mutual described CSI-RS configuration information of X2 interface.
20. devices according to claim 18, is characterized in that, described joint instructions are the codings corresponding to the indicating on-off state of described CSI-RS, port numbers, cycle and skew.
21. devices according to claim 19, is characterized in that, described broadcast is completed by system information block.
CN201010281364.3A 2010-09-13 2010-09-13 Receive and send the method and apparatus of CSI-RS configuration information CN102404689B (en)

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