CN102404689A - Method and device for receiving and sending crime scene investigation (CSI)- radio station (RS) configuration information - Google Patents
Method and device for receiving and sending crime scene investigation (CSI)- radio station (RS) configuration information Download PDFInfo
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Abstract
The invention discloses a method and a device for receiving and sending crime scene investigation (CSI)-radio station (RS) configuration information. A receiving method of the CSI-RS configuration information comprises the following steps: a user terminal receives the CSI-RS configuration information sent in a broadcasting mode; the user terminal determines the position of CSI-RS in a frame according to the CSI-RS configuration information, and the CSI-RS configuration information has unite indications. A sending method of the CSI-RS configuration information comprises the following steps: a base station sends the CSI-RS configuration information, and the CSI-RS configuration information has the unite indications and is used for determining the position of the CSI-RS in the frame.
Description
Technical field
The present invention relates to the communications field, relate in particular to the method and apparatus that receives and send the CSI-RS configuration information.
Background technology
MIMO (multi-input multiple-output, multiple-input and multiple-output) technology is played an important role in communication system of new generation as the important raising transmission quality and the physical layer multi-antenna technology of efficient.LTE (long term evolution, Long Term Evolution) system supports transmit diversity, 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 (like 8 antenna ports), and MU-MIMO (multi-user MIMO, multiuser MIMO) technology also can be enhanced.In order to bring into play the MIMO technical advantage better, corresponding variation has also taken place in pilot configuration.Descending pilot frequency is divided into demodulation pilot frequency (promptly; DMRS (demodulation reference signal; Demodulated reference signal)) and measurement pilot frequency (promptly; CSI-RS (channel state indication reference signal, channel status indication reference signal)), be respectively applied for and separate the mediation channel measurement.CSI-RS is the pilot configuration that a kind of periodicity is sent, and in a sub-frame, has multiple pattern (pattern) optional.
Introduced the measurement mechanism based on CSI-RS among the LTE-A, UE needs could generate reporting informations such as CQI/PMI/RI according to the measurement to CSI-RS.In 3GPP RAN1 #61bis meeting, confirmed when common (normal) CP and expansion (extended) CP, to adopt Fig. 1 and CSI-RS pattern shown in Figure 2 respectively.
Can find out by Fig. 1 and Fig. 2,, also have multiple different CSI-RS pattern for identical CSI-RS port number.Different with the employed CRS of LTE Rel-8/9 (carrier-class route system) in addition, CSI-RS is comparatively sparse in the distribution of time domain, frequency domain, and its cycle (is unit with the subframe) also can dispose.For identical CSI-RS pattern, also possibly there are multiple choices in the time domain of its original position skew (is unit with the subframe).
Give the correct time on LTE Rel-10 UE (User Equipment, user terminal) carries out, need measure the channel of its Serving cell, therefore must make UE know the employed CSI-RS configuration parameter in this sub-district through certain mode based on CSI-RS.In the application scenarios that multi-plot joint is handled, can estimate the channel of cooperation cell in order to guarantee UE, also need indicate the configuration parameter of adjacent sub-district CSI-RS.
According to the network design situation, should allow some Rel-10 sub-district to close CSI-RS in addition.Therefore also need indicate the on off state of CSI-RS through certain mode.
In CoMP transmission, the CSI of a plurality of sub-districts that each cooperative base station need report according to UE confirms the pretreatment mode of downlink transfer, and UE then need measure the channel status of each sub-district according to the CSI-RS of a plurality of sub-districts.In the application scenarios of multi-cell cooperating transmission, can estimate the channel of cooperation cell in order to guarantee UE, also need indicate the configuration parameter of adjacent sub-district CSI-RS.
For the accuracy that guarantees channels of neighboring areas is measured, may introduce the notion of muting (mourning in silence) among the LTE-A.In this case, may not send any signal (punching) with the RE (resource element, Resource Unit) of adjacent area CSI-RS signal overlap in the downlink transfer.The pattern of Muting can bring influence to the mapping of rate-matched and resource, in order to guarantee the reliability of downlink transfer, even for the UE of CoMP participating not, when it carries out Data Detection, also need know the pattern of muting.
Yet, the technical scheme of also the CSI-RS relevant information not being indicated at present.
Summary of the invention
Consider the problems referred to above and make the present invention.
According to an aspect of the present invention, a kind of method of reseptance of CSI-RS configuration information is provided, this method may further comprise the steps: user terminal receives the CSI-RS configuration information that sends through the forms of broadcasting; And user terminal confirms the position of CSI-RS in frame according to the CSI-RS configuration information, and wherein, the CSI-RS configuration information has joint instructions.
According to a further aspect in the invention, a kind of sending method of CSI-RS configuration information is provided, this method may further comprise the steps: the CSI-RS configuration information is sent in the base station, and wherein, the CSI-RS configuration information has joint instructions, is used for confirming the position of CSI-RS at frame.
According to another aspect of the invention, a kind of receiving system of CSI-RS configuration information is provided, this device comprises: receiver module is used for receiving the CSI-RS configuration information that sends with the forms of broadcasting through user terminal; And position determination module, be used for confirming the position of CSI-RS according to the CSI-RS configuration information that wherein, the CSI-RS configuration information has joint instructions at frame through user terminal.
According to another aspect of the invention, a kind of dispensing device of CSI-RS configuration information is provided, this device comprises: sending module; Be used for sending the CSI-RS configuration information through the base station; Wherein, the CSI-RS configuration information has joint instructions, is used for confirming the position of CSI-RS at frame.
Through above-mentioned four schemes, can be to the configuration information of the position of the relevant CSI-RS of UE joint instructions in frame.
According to another aspect of the invention; A kind of method of reseptance of CSI-RS configuration information is provided; This method may further comprise the steps: user terminal receives the CSI-RS configuration information that sends through the forms of broadcasting; Wherein, the 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; A kind of sending method of CSI-RS configuration information is provided, and this method may further comprise the steps: the CSI-RS configuration information is sent in the base station, wherein; The 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; A kind of receiving system of CSI-RS configuration information is provided; This device comprises: receiver module is used for receiving the CSI-RS configuration information that sends with the forms of broadcasting through user terminal, wherein; The 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, a kind of dispensing device of CSI-RS configuration information is provided, this device comprises: sending module; Be used for sending the CSI-RS configuration information through the base station; Wherein, the CSI-RS configuration information has joint instructions, is used to indicate on off state and the port numbers of CSI-RS.
Through above-mentioned four schemes, can whether exist and the configuration information of port numbers to the relevant CSI-RS of UE joint instructions, and then can make UE carry out confirming of CSI-RS address.
According to another aspect of the invention, a kind of transfer approach of CSI-RS configuration information is provided, this method may further comprise the steps: Serving cell identifies alternative cooperation cell; Serving cell obtains the CSI-RS configuration information with joint instructions of alternative cooperation cell; And Serving cell sends to the user terminal in the Serving cell with the forms of broadcasting with the sign and the corresponding C SI-RS configuration information of alternative cooperation cell.
Through an above-mentioned scheme, can indicate the CSI-RS configuration information of a plurality of Lin Qu to UE.
Other features and advantages of the present invention will be set forth in specification subsequently, and, partly from specification, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 shows the sketch map of the CSI-RS pattern of 2 ports under the normal CP condition, 4 ports, 8 ports.
Fig. 2 shows the sketch map of the CSI-RS pattern of 2 ports under the 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
To combine accompanying drawing to specify embodiments of the invention below.
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 said method, the CSI-RS configuration information has been indicated 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 that sends through the forms of broadcasting; S303, user terminal is confirmed the position of CSI-RS in frame according to the CSI-RS configuration information, wherein, the CSI-RS configuration information has joint instructions.As shown in Figure 4, the sending method of network side comprises: S401, and the CSI-RS configuration information is sent in the base station, and wherein, the CSI-RS configuration information has joint instructions, is used for confirming the position of CSI-RS at frame.
Wherein, in the time can not directly obtaining configuration information through broadcasting, the received CSI-RS configuration information of user terminal is (the step S400) that obtains alternately through X2 interface in advance, and the 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 among the TN}, wherein Ti (i ∈ 1 ..., be that its unit is ms greater than zero positive integer N}).To any one configuration Ti in cycle (i ∈ 1 ..., N}), note CSI-RS side-play amount is a Δ
iΔ
iUnit be ms, it maybe span be 0≤Δ
i≤T
i-1.In this scope, possible some corresponding subframe position can not be used for the CSI-RS transmission.So will can be used for the pairing side-play amount set of the subframe of CSI-RS transmission is designated as
Its size is P
i(j=1 ..., P
i).The combination table of all cycles and side-play amount is shown { (T
1, { Δ
1) ..., (T
N, { Δ
N), the cycle that then need distinguish and side-play amount number of combinations do
This programme uses
Joint instructions are carried out in cycle and skew to CSI-RS.Network side is to be numbered
System-frame as the benchmark of sign CSI-RS skew, the cycle is distinguished Ti and Δ with offset configuration
iThe time, from
Pairing subframe begins, with T
iFor the cycle exists
On pairing each subframe according to Fig. 1, certain pattern shown in 2 send CSI-RS (k=0 wherein, 1 ...).
For the UE in the Serving cell, the concrete steps of this method can be expressed as:
The base station is with the configuration information of the forms of broadcasting through the terminal transmission CSI-RS of SIB in its service area, and wherein the cycle of CSI-RS and offset parameter are by
joint instructions;
UE receives cell broadcast service, and according to the cycle of CSI-RS and squint pairing Ti of indication information and Δ
iJudge the position of CSI-RS: from
Pairing subframe begins, with T
iFor the cycle exists
Send on pairing each subframe (k=0 wherein, 1 ...).
UE for measuring the adjacent area in other sub-districts can pass through X2 interface mutual above-mentioned information between the base station, and notifies to the UE that need measure the adjacent area with the forms of broadcasting through SIB.
In order to realize above-mentioned indication scheme, need to define in advance the corresponding relation between
indication information and CSI-RS cycle and the skew.Provide an example of this corresponding relation below.
Suppose to exist 3 kinds of CSI-RS cycles to dispose: 5,10,20}ms.For the various cycles, corresponding offset can be set at 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 information example of CSI-RS cycle and skew.As shown in table 1, this situation needs 6bit information that CSI-RS cycle and skew are carried out joint instructions altogether.
Table 1
Through such scheme, portable terminal can be confirmed the position of CSI-RS in frame according to the CSI-RS configuration information that receives, so that it is 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 said method, the CSI-RS configuration information has been indicated information such as the 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 that sends through the forms of broadcasting, and wherein, the CSI-RS configuration information has joint instructions, is used to indicate on off state and the port numbers of CSI-RS; S503, user terminal is confirmed the position of CSI-RS in frame according to the CSI-RS configuration information, wherein, the CSI-RS configuration information also is used to indicate cycle and the skew of CSI-RS.As shown in Figure 6, the sending method of network side comprises: S601, and the CSI-RS configuration information is sent in the base station, and wherein, the CSI-RS configuration information has joint instructions, is used to indicate on off state and the port numbers of CSI-RS.
Wherein, in the time can not directly obtaining configuration information through broadcasting, the received CSI-RS configuration information of user terminal is (S600) that obtains alternately through X2 interface in advance, and the CSI-RS configuration information is corresponding to the on off state of CSI-RS and the coding of port numbers.
Particularly, supposing then need increase a RRC signaling that comprises two states with the on off state of independent signaling indication CSI-RS, is used to represent whether this sub-district transmits CSI-RS.In the scheme of indication 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 through SIB with the form of broadcasting, can also this information be notified to other sub-districts through X2 interface, and be broadcast to the UE that the adjacent area is measured through SIB by other sub-districts.
If switch and port number to CSI-RS carry out joint instructions, at first need confirm the combinations of states of CSI-RS switch and available period.Suppose can the employable CSI-RS cycle comprise N kind situation among the Rel-10, be designated as T1, T2 ..., TN}, then the combination in CSI-RS switch and cycle can be by shown in the table 3.Wherein comprise N kind state and represent that respectively the CSI-RS state is for opening and the cycle is T
i(1≤i≤N), also comprise this sub-district of a kind of STA representation and do 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 through SIB with the form of broadcasting, can also this information be notified to other sub-districts through X2 interface, and be broadcast to the UE that the adjacent area is measured through SIB by other sub-districts.
The CSI-RS cycle of supposing possibly to adopt among the LTE Rel-10 for 5,10, three kinds of situation of 20}ms, 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 |
| State | |
| 1 | CSI-RS sends, and the cycle is |
| State | |
| 2 | CSI-RS sends, and the cycle is |
| State | |
| 3 | CSI-RS sends, and the cycle is 20ms |
| |
Close |
If switch and port number to CSI-RS carry out joint instructions, then at first need confirm the combinations of states of CSI-RS switch and port number.Suppose can comprise N kind situation by employable CSI-RS port number among the Rel-10, be designated as
then the combination of CSI-RS switch and port number can be by shown in the table 5.Wherein comprise N kind state and represent that respectively the CSI-RS state is for opening and port number also comprises this sub-district of a kind of STA representation and do not transmit CSI-RS for
.
Table 5
The switch of CSI-RS and port number indication information send to the UE of Serving cell through SIB with the form of broadcasting, can also this information be notified to other sub-districts through X2 interface, and be broadcast to the UE that the adjacent area is measured through SIB by other sub-districts.
The CSI-RS port number of supposing possibly to adopt among the LTE Rel-10 for 2,4, three kinds of situation of 8}, 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 |
| State | |
| 1 | CSI-RS sends, and port number is 2 |
| |
CSI-RS sends, and port number is 4 |
| |
CSI-RS sends, and port number is 8 |
| |
Close |
Through such scheme, portable terminal can determine whether to exist CSI-RS according to the CSI-RS configuration information that receives, and the port information of CSI-RS, thereby can further confirm its position in frame, so that it is received.
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 to alternative cooperation cell (be also referred to as " potential cooperation cell ", that is, have the ability to cooperate with Serving cell and can according to be provided with selection whether with the sub-district of its cooperation) identify; S703, Serving cell obtain the CSI-RS configuration information with joint instructions of alternative cooperation cell; And S705, Serving cell sends to the user terminal in the Serving cell with the forms of broadcasting with the sign and the corresponding C SI-RS configuration information of alternative cooperation cell.
Particularly, this programme can be realized the indication to the muting pattern of downlink transfer, and other sub-districts CSI-RS configuration information that can need measure to the UE indication that is in CoMP transmission.
For the ease of describing, the set that alternative cooperation cell constituted of cell i is designated as C
iWith C
iThe intersection of the employed CSI-RS pattern in each sub-district is called the muting set
S wherein
jThe shared RE set of CSI-RS among the expression sub-district j, this set is confirmed by the parameters such as CSI-RS port number, pattern, cycle and time domain skew of sub-district j jointly.
As far as arbitrary cell i, the concrete steps of this programme can be expressed as:
1, cell i is set the alternative cooperation cell set C of oneself
i, and in cell i, respectively each alternative cooperation cell is identified with unique label, with sub-district j (j ∈ C
i) sign in cell i is designated as
2, for C
iIn be subordinated to the sub-district of same base station with cell i, can directly obtain its CSI-RS configuration parameter; For C
iIn do not belong to the sub-district of same base station with cell i, can obtain its CSI-RS configuration parameter through X2 interface.Wherein the CSI-RS configuration parameter comprises CSI-RS port number, pattern, cycle and time domain skew etc., the RE set that can unique definite CSI-RS takies according to this configuration information;
3, cell i is notified the UE to this sub-district through broadcasting with the sign
and the corresponding CSI-RS configuration parameter of each alternative cooperation cell.Need in this process to guarantee that UE can confirm the corresponding relation between
and the CSI-RS configuration parameter;
4, for all UE in the cell i, can be according to S
j, j ∈ C
iAnd
Parameters of rate matching during to downlink resource mapping mode and downlink transfer is confirmed (step 707);
5,, gather C through special-purpose high-level signaling to its notice by cell i for the UE that is configured to CoMP (multipoint cooperative transmission) transmission means
iThe sign of sub-district in cell i of middle CoMP participating transmission;
6, for the UE that is configured to the CoMP transmission means, can know its required CSI-RS set of measuring in the CoMP transmission according to the information that step 5) obtains, 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 carry out above-mentioned steps again.
Through such scheme, just can realize the indication of the CSI-RS configuration information of many sub-districts, particularly for the sub-district 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 comprises at least: receiver module 803 is used for receiving the CSI-RS configuration information that sends with the forms of broadcasting through user terminal; Position determination module 805 is used for confirming the position of CSI-RS at frame through user terminal according to the CSI-RS configuration information.And comprise sending module 807 in the dispensing device at least; Be used for sending the CSI-RS configuration information through the base station; Wherein, The CSI-RS configuration information has joint instructions, and it has indicated the information of CSI-RS on off state, port, cycle and skew etc., thereby can make UE confirm the position of CSI-RS in frame according to these information.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (49)
1. the method for reseptance of a CSI-RS configuration information is characterized in that, said method comprising the steps of:
User terminal receives the CSI-RS configuration information that sends through the forms of broadcasting; And
Said user terminal is confirmed the position of CSI-RS in frame according to said CSI-RS configuration information,
Wherein, said CSI-RS configuration information has joint instructions.
2. method according to claim 1 is characterized in that, the received said CSI-RS configuration information of said user terminal is to obtain through X2 interface is mutual in advance.
3. method according to claim 1 and 2 is characterized in that, said joint instructions are used to indicate cycle and the skew of said CSI-RS.
4. method according to claim 3 is characterized in that, said joint instructions are corresponding to the cycle of said CSI-RS and the coding of skew.
5. method according to claim 4 is characterized in that, said position is confirmed by following formula:
Position=N * 10+ Δ
i+ k * T
i,
Wherein, N is the reference position in the frame, T
iBe the said cycle, Δ
iBe said skew, k is a natural number.
6. method according to claim 1 and 2 is characterized in that said broadcasting is accomplished through system information block.
7. the sending method of a CSI-RS configuration information is characterized in that, said method comprising the steps of:
The CSI-RS configuration information is sent in the base station,
Wherein, said CSI-RS configuration information has joint instructions, is used for confirming the position of CSI-RS at frame.
8. method according to claim 7 is characterized in that,
Said CSI-RS configuration information is sent through the forms of broadcasting in said base station, perhaps
Said base station is through the mutual said CSI-RS configuration information of X2 interface.
9. according to claim 7 or 8 described methods, it is characterized in that said joint instructions are used to indicate cycle and the skew of said CSI-RS.
10. method according to claim 9 is characterized in that, said joint instructions are corresponding to the cycle of said CSI-RS and the coding of skew.
11. method according to claim 10 is characterized in that, said position is confirmed by following formula:
Position=N * 10+ Δ
i+ k * T
i,
Wherein, N is the reference position in the frame, T
iBe the said cycle, Δ
iBe said skew, k is a natural number.
12., it is characterized in that said broadcasting is accomplished through system information block according to claim 7 or 8 described methods.
13. the method for reseptance of a CSI-RS configuration information is characterized in that, said method comprising the steps of:
User terminal receives the CSI-RS configuration information that sends through the forms of broadcasting,
Wherein, said CSI-RS configuration information has joint instructions, is used to indicate on off state and the port numbers of said CSI-RS.
14. method according to claim 13 is characterized in that, the received said CSI-RS configuration information of said user terminal is to obtain through X2 interface is mutual in advance.
15., it is characterized in that said joint instructions are corresponding to the on off state of said CSI-RS and the coding of port numbers according to claim 13 or 14 described methods.
16., it is characterized in that said broadcasting is accomplished through system information block according to claim 13 or 14 described methods.
17. according to claim 13 or 14 described methods, it is characterized in that, also comprise:
Said user terminal is confirmed the position of said CSI-RS in frame according to said CSI-RS configuration information,
Wherein, said joint instructions also are used to indicate cycle and the skew of said CSI-RS.
18. method according to claim 17 is characterized in that, said joint instructions are codings of on off state, port numbers, cycle and skew corresponding to said CSI-RS.
19. the sending method of a CSI-RS configuration information is characterized in that, said method comprising the steps of:
The CSI-RS configuration information is sent in the base station,
Wherein, said CSI-RS configuration information has joint instructions, is used to indicate on off state and the port numbers of said CSI-RS.
20. method according to claim 19 is characterized in that,
Said CSI-RS configuration information is sent through the forms of broadcasting in said base station, perhaps
Said base station is through the mutual said CSI-RS configuration information of X2 interface.
21. method according to claim 20 is characterized in that, said joint instructions are corresponding to the on off state of said CSI-RS and the coding of port numbers.
22., it is characterized in that said broadcasting is accomplished through system information block according to claim 19 or 20 described methods.
23. the transfer approach of a CSI-RS configuration information is characterized in that, said method comprising the steps of:
Serving cell identifies alternative cooperation cell;
Said Serving cell obtains the CSI-RS configuration information with joint instructions of said alternative cooperation cell; And
Said Serving cell sends to the user terminal in the said Serving cell with the forms of broadcasting with the sign and the corresponding said CSI-RS configuration information of said alternative cooperation cell.
24. method according to claim 23 is characterized in that, said user terminal is confirmed the parameters of rate matching of downlink resource mapping mode and downlink transfer according to following formula,
S
j, j ∈ C
iAnd
Wherein, S
jRepresent the shared RE set of CSI-RS among the alternative cooperation cell j, C
iRepresent alternative cooperation cell set, S
MutingThe intersection of representing the employed CSI-RS pattern in each sub-district in the alternative cooperation cell.
25. method according to claim 23; It is characterized in that; For the user terminal that is configured to the multipoint cooperative transmission means, said Serving cell sends to the said user terminal that is configured to the multipoint cooperative transmission means through special-purpose high-level signaling with the sign of the sub-district of participating in the multipoint cooperative transmission in the said alternative cooperation cell.
26. method according to claim 25; It is characterized in that; The said user terminal that is configured to the multipoint cooperative transmission means obtains the CSI-RS set that needs are measured in the multipoint cooperative transmission according to the sign of the sub-district of participating in the multipoint cooperative transmission in the said alternative cooperation cell, and said CSI-RS set is measured and reported.
27. method according to claim 23 is characterized in that,
When said alternative cooperation cell and said Serving cell were subordinated to same base station, said Serving cell directly obtained the CSI-RS configuration information with joint instructions of said alternative cooperation cell,
When said alternative cooperation cell and said Serving cell were not subordinated to same base station, said Serving cell obtained the CSI-RS configuration information with joint instructions of said alternative cooperation cell through X2 interface.
28. the receiving system of a CSI-RS configuration information is characterized in that, said device comprises:
Receiver module is used for receiving the CSI-RS configuration information that sends with the forms of broadcasting through user terminal; And
Position determination module is used for confirming the position of CSI-RS at frame through said user terminal according to said CSI-RS configuration information,
Wherein, said CSI-RS configuration information has joint instructions.
29. device according to claim 28 is characterized in that, the received said CSI-RS configuration information of said user terminal is to obtain through X2 interface is mutual in advance.
30., it is characterized in that said joint instructions are used to indicate cycle and the skew of said CSI-RS according to claim 28 or 29 described devices.
31. device according to claim 30 is characterized in that, said joint instructions are corresponding to the cycle of said CSI-RS and the coding of skew.
32. device according to claim 31 is characterized in that, said position is confirmed by following formula:
Position=N * 10+ Δ
i+ k * T
i,
Wherein, N is the reference position in the frame, T
iBe the said cycle, Δ
iBe said skew, k is a natural number.
33., it is characterized in that said broadcasting is accomplished through system information block according to claim 28 or 29 described devices.
34. the dispensing device of a CSI-RS configuration information is characterized in that, said device comprises:
Sending module is used for sending the CSI-RS configuration information through the base station,
Wherein, said CSI-RS configuration information has joint instructions, is used for confirming the position of CSI-RS at frame.
35. device according to claim 34 is characterized in that,
Said CSI-RS configuration information is sent through the forms of broadcasting in said base station, perhaps
Said base station is through the mutual said CSI-RS configuration information of X2 interface.
36., it is characterized in that said joint instructions are used to indicate cycle and the skew of said CSI-RS according to claim 34 or 35 described devices.
37. device according to claim 36 is characterized in that, said joint instructions are corresponding to the cycle of said CSI-RS and the coding of skew.
38., it is characterized in that said position is confirmed by following formula according to the described device of claim 37:
Position=N * 10+ Δ
i+ k * T
i,
Wherein, N is the reference position in the frame, T
iBe the said cycle, Δ
iBe said skew, k is a natural number.
39., it is characterized in that said broadcasting is accomplished through system information block according to claim 34 or 35 described devices.
40. the receiving system of a CSI-RS configuration information is characterized in that, said device comprises:
Receiver module is used for receiving the CSI-RS configuration information that sends with the forms of broadcasting through user terminal,
Wherein, said CSI-RS configuration information has joint instructions, is used to indicate on off state and the port numbers of said CSI-RS.
41., it is characterized in that the received said CSI-RS configuration information of said user terminal is to obtain through X2 interface is mutual in advance according to the described device of claim 40.
42., it is characterized in that said joint instructions are corresponding to the on off state of said CSI-RS and the coding of port numbers according to claim 40 or 41 described devices.
43., it is characterized in that said broadcasting is accomplished through system information block according to claim 40 or 41 described devices.
44. according to claim 40 or 41 described devices, it is characterized in that, also comprise:
Position determination module is used for confirming the position of said CSI-RS at frame through said user terminal according to said CSI-RS configuration information,
Wherein, said joint instructions also are used to indicate cycle and the skew of said CSI-RS.
45., it is characterized in that said joint instructions are codings of on off state, port numbers, cycle and skew corresponding to said CSI-RS according to the described device of claim 44.
46. the dispensing device of a CSI-RS configuration information is characterized in that, said device comprises:
Sending module is used for sending the CSI-RS configuration information through the base station,
Wherein, said CSI-RS configuration information has joint instructions, is used to indicate on off state and the port numbers of said CSI-RS.
47. according to the described device of claim 46, it is characterized in that,
Said CSI-RS configuration information is sent through the forms of broadcasting in said base station, perhaps
Said base station is through the mutual said CSI-RS configuration information of X2 interface.
48., it is characterized in that said joint instructions are corresponding to the on off state of said CSI-RS and the coding of port numbers according to the described device of claim 47.
49., it is characterized in that said broadcasting is accomplished through system information block according to claim 46 or 47 described devices.
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Address after: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
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