CN102036376B

CN102036376B - Acquisition method, indication method and device of measurement pilot CSI-RS (channel state information-reference signal)

Info

Publication number: CN102036376B
Application number: CN 200910093341
Authority: CN
Inventors: 王正海; 肖国军; 徐婧; 缪德山
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2009-09-28
Filing date: 2009-09-28
Publication date: 2013-11-06
Anticipated expiration: 2029-09-28
Also published as: CN102036376A

Abstract

The embodiment of the invention discloses an acquisition method, indication method and device of measurement pilot CSI-RS (channel state information-reference signal). The embodiment of the invention perfects the transmission process of the measurement pilot, so that a user terminal can determine the subframe in which the measurement pilot is located according to the transmission cycle of the measurement pilot transmitted by the network side and the subframe position of the transmission measurement pilot.

Description

The acquisition methods of measurement pilot frequency CSI-RS, indicating means and equipment

Technical field

The present invention relates to communication technique field, relate in particular to acquisition methods, indicating means and the equipment of a kind of measurement pilot frequency CSI-RS.

Background technology

LTE-A (Long Term Evolution-Advanced, advanced Long Term Evolution) standardization effort carries out, for satisfying the requirement of its peak rate, 8 * 8 MIMO (Multiple Input MultipleOutput, multiple-input and multiple-output) become guardian technique.In this case, just need to the reference signal of these 8 antenna ports be configured respectively.When guaranteeing systematic function, the expense that reduce is introduced by reference signal, available technology adopting CSI-RS (measurement pilot frequency) and DMRS (DeModulation Reference Signal, demodulation pilot frequency) method that separately designs and optimize, be that dedicated pilot is adopted in demodulation, measure and adopt measurement pilot frequency.In order to reduce the expense of measurement pilot frequency, in prior art with the benchmark of 16RE/10ms/RB as the measurement pilot frequency expense.In order to satisfy mentioned above principle, determined the principle of measurement pilot frequency periodic transfer in prior art.

In the LTE-A residential quarter, need to transmit periodically CSI-RS.In general, a feasible CSI-RS transmission cycle and transmission subframe position can be determined according to the Configuration Type of frame structure and frame structure in the residential quarter of LTE-A system, and notify this residential quarter all users by high-level signaling (such as broadcasting).User in the LTE-A residential quarter can according to CSI-RS transmission cycle and the transmission subframe position of residential quarter indication, receive CSI-RS and carry out channel measurement.Problems of the prior art are: at present, also do not determine for the specific embodiments of CSI-RS transmission cycle and transmission subframe position.

Summary of the invention

Embodiments of the invention provide acquisition methods, indicating means and the equipment of a kind of measurement pilot frequency CSI-RS, be used for realizing between residential quarter and user terminal to the indication of measurement pilot frequency with obtain.

In order to achieve the above object, embodiments of the invention provide the indicating means of a kind of measurement pilot frequency CSI-RS, comprising:

Determine the transmission cycle of measurement pilot frequency in the residential quarter and the subframe position of transmission measurement pilot tone;

Notify user terminal in described residential quarter with the subframe position of the transmission cycle of described measurement pilot frequency and transmission measurement pilot tone.

Wherein, the transmission cycle T of described measurement pilot frequency _CSI-RSCSI-RS is every T for the expression measurement pilot frequency _CSI-RSIndividual subframe transmission primaries; The subframe position of described transmission measurement pilot tone indicates SF_Index to represent by subframe position, and described SF_Index is relevant with the number of subframes of the measurement pilot frequency mapping of all antenna ports.

Wherein, when the measurement pilot frequency CSI-RS of all antenna ports was mapped in a subframe, described SF_Index represented the subframe position that the measurement pilot frequency of all antenna ports is mapped to, and definite method of described SF_Index is:

When satisfying SF_Index=(Fn _f+ n _sf) modT _CSI-RSThe time, in the residential quarter, the measurement pilot frequency of all antenna ports is at n _fN in individual frame _sfTransmit in individual subframe;

N wherein _fThe frame number of expression system, n _sfRepresent n _fN in individual frame _sfIndividual subframe, F represents the number of subframe in a frame.

Wherein, the measurement pilot frequency CSI-RS of all antenna ports is mapped to when transmitting in two subframes, and each transmission of each subframe is 1/2 measurement pilot frequency wherein; Use respectively Δ _{SFC_first}And Δ _{SFC_last}Expression can be for the array of the subframe of the measurement pilot transmission of front and back 1/2, and SF_Index represents Δ _{SFC_first}And Δ _{SFC_last}Index, definite method of described SF_Index is:

When satisfying Δ _{SFC_first}(SF_Index)=(Fn _f+ n _sf) modT _CSI-RSThe time, in the residential quarter, front 1/2 measurement pilot frequency is at n _fN in individual frame _sfTransmit in individual subframe;

When satisfying Δ _{SFC_last}(SF_Index)=(Fn _f+ n _sf) modT _CSI-RSThe time, in the residential quarter, rear 1/2 measurement pilot frequency is at n _fN in individual frame _sfTransmit in individual subframe;

Wherein, the measurement pilot frequency CSI-RS of all antenna ports be mapped to M (M=2,3 ..., when F) transmitting in individual subframe, all antenna ports are divided into M group, each subframe transmission is one group of measurement pilot frequency wherein; Use respectively Δ _{SFC_0}, Δ _{SFC_1}..., Δ _{SFC_M-1}Expression can supply the array of the subframe of every group of measurement pilot transmission, and SF_Index represents the array Δ _{SFC_0}, Δ _{SFC_1}..., Δ _{SFC_M-1}Index, definite method of described SF_Index is:

When satisfying Δ _{SFC_m}(SF_Index)=(Fn _f+ n _sf) modT _CSI-RSThe time, in the residential quarter, the measurement pilot frequency of m group is at n _fN in individual frame _sfTransmit in individual subframe;

Wherein, m=0,1 ..., M-1, n _fThe frame number of expression system, n _sfRepresent n _fN in individual frame _sfIndividual subframe, F represents the number of subframe in a frame.

Wherein, the measurement pilot frequency CSI-RS of all antenna ports be mapped to M (M=2,3 ..., when F) transmitting in individual subframe, all antenna ports are divided into M group, each subframe transmission is one group of measurement pilot frequency wherein; In described definite residential quarter, the subframe position of the transmission cycle of measurement pilot frequency and transmission measurement pilot tone comprises:

Determine the transmission cycle of measurement pilot frequency in the residential quarter, the subframe position of a certain particular group transmission measurement pilot tone and the sub-frame interval between adjacent sets.

Wherein, described transmission cycle and the subframe position of transmission measurement pilot tone with described measurement pilot frequency notified user terminal in described residential quarter, comprising:

Notify user terminal in described residential quarter with the transmission cycle of measurement pilot frequency in described residential quarter by explicit way;

Notify user terminal in described residential quarter with the subframe position of described transmission measurement pilot tone by explicit way or implicit;

When the sub-frame interval between needs notices adjacent sets, notify user terminal in described residential quarter with the sub-frame interval between described adjacent sets by explicit way or implicit.

The transmission cycle of described measurement pilot frequency and the subframe position of transmission measurement pilot tone are carried out obtaining index after combined coding, notify user terminal in described residential quarter with described index.

Embodiments of the invention also provide the acquisition methods of a kind of measurement pilot frequency CSI-RS, comprising:

Obtain the transmission cycle of measurement pilot frequency in the residential quarter and the subframe position of transmission measurement pilot tone;

According to the transmission cycle of described measurement pilot frequency and the subframe position of transmission measurement pilot tone, determine the subframe at measurement pilot frequency place.

Wherein, when the measurement pilot frequency CSI-RS of all antenna ports was mapped in a subframe, described SF_Index represented the subframe position that the measurement pilot frequency of all antenna ports is mapped to, and the subframe at described definite measurement pilot frequency place comprises:

Wherein, the measurement pilot frequency CSI-RS of all antenna ports is mapped to when transmitting in two subframes, and each transmission of each subframe is 1/2 measurement pilot frequency wherein; Use respectively Δ _{SFC_first}And Δ _{SFC_last}Expression can be for the array of the subframe of the measurement pilot transmission of front and back 1/2, and SF_Index represents Δ _{SFC_first}And Δ _{SFC_last}Index, the subframe at described definite measurement pilot frequency place comprises:

Wherein, the measurement pilot frequency CSI-RS of all antenna ports be mapped to M (M=2,3 ..., when F) transmitting in individual subframe, all antenna ports are divided into M group, each subframe transmission is one group of measurement pilot frequency wherein; Use respectively Δ _{SFC_0}, Δ _{SFC_1}..., Δ _{SFC_M-1}Expression can supply the array of the subframe of every group of measurement pilot transmission, and SF_Index represents the array Δ _{SFC_0}, Δ _{SFC_1}..., Δ _{SFC_M-1}Index, the subframe at described definite measurement pilot frequency place comprises:

Wherein, the measurement pilot frequency CSI-RS of all antenna ports be mapped to M (M=2,3 ..., when F) transmitting in individual subframe, all antenna ports are divided into M group, each subframe transmission is one group of measurement pilot frequency wherein;

The described transmission cycle of measurement pilot frequency in the residential quarter and the subframe position of transmission measurement pilot tone obtained comprises: obtain the transmission cycle of measurement pilot frequency in the residential quarter, the subframe position of a certain particular group transmission measurement pilot tone and the sub-frame interval between adjacent sets;

Described according to the transmission cycle of described measurement pilot frequency and the subframe position of transmission measurement pilot tone, the subframe of determining the measurement pilot frequency place comprises: according to the transmission cycle of measurement pilot frequency in described residential quarter, the subframe position of a certain particular group transmission measurement pilot tone, obtain the subframe at described particular group transmission measurement pilot tone place, according to the subframe at described particular group transmission measurement pilot tone place and the sub-frame interval between adjacent sets, obtain the subframe at all measurement pilot frequency place.

Wherein, the described transmission cycle of measurement pilot frequency in the residential quarter and the subframe position of transmission measurement pilot tone obtained comprises:

Obtain the transmission cycle of the measurement pilot frequency of notifying by explicit way in the residential quarter;

Obtain the subframe position of the transmission measurement pilot tone of notifying by explicit way or implicit in the residential quarter;

When the sub-frame interval between needs notice adjacent sets, obtain in the residential quarter by the sub-frame interval between the described adjacent sets of explicit way or implicit notice.

Obtain the subframe position by the transmission cycle of described measurement pilot frequency and transmission measurement pilot tone of notifying in the residential quarter and carry out the index that obtains after combined coding, obtain the transmission cycle of measurement pilot frequency in the residential quarter and the subframe position of transmission measurement pilot tone according to described index.

Wherein, describedly obtain the transmission cycle of measurement pilot frequency in the residential quarter and the subframe position of transmission measurement pilot tone according to index, comprising:

For the index I that receives _CSI-RS, search default corresponding relation and obtain and index I _CSI-RSThe transmission cycle T of corresponding measurement pilot frequency _CSI-RSWith subframe position indication SF_Index; Or

For the index I that receives _CSI-RS, utilize following formula to obtain the transmission cycle T of measurement pilot frequency _CSI-RSIndicate SF_Index with subframe position:

SF_Index＝I _CSI-RS mod K

Wherein, K represents that in a radio frames, all can be used as the number of the subframe of measurement pilot transmission; T _{CSI-RS_Index}Expression measurement pilot transmission periodic key is for the transmission cycle T of sign measurement pilot frequency _CSI-RS

The computing of the maximum integer that is not more than x is asked in expression; Xmody represents the remainder that obtains after x is removed by y.

Embodiments of the invention also provide a kind of network equipment, are used for the indication of measurement pilot frequency CSI-RS, comprising:

Determining unit is used for determining the transmission cycle of residential quarter measurement pilot frequency and the subframe position of transmission measurement pilot tone;

Notification unit, the subframe position that is used for the transmission cycle of measurement pilot frequency that described determining unit is determined and transmission measurement pilot tone is notified the user terminal of described residential quarter.

Wherein, when the measurement pilot frequency CSI-RS of all antenna ports was mapped in a subframe, described SF_Index represented the subframe position that the measurement pilot frequency of all antenna ports is mapped to, and described determining unit specifically is used for, and determines described SF_Index according to following methods:

Wherein, the measurement pilot frequency CSI-RS of all antenna ports is mapped to when transmitting in two subframes, and each transmission of each subframe is 1/2 measurement pilot frequency wherein; Use respectively Δ _{SFC_first}And Δ _{SFC_last}Expression can be for the array of the subframe of the measurement pilot transmission of front and back 1/2, and SF_Index represents Δ _{SFC_first}And Δ _{SFC_last}Index, described determining unit specifically is used for, and determines described SF_Index according to following methods:

Wherein, the measurement pilot frequency CSI-RS of all antenna ports be mapped to M (M=2,3 ..., when F) transmitting in individual subframe, all antenna ports are divided into M group, each subframe transmission is one group of measurement pilot frequency wherein; Use respectively Δ _{SFC_0}, Δ _{SFC_1}..., Δ _{SFC_M-1}Expression can supply the array of the subframe of every group of measurement pilot transmission, and SF_Index represents the array Δ _{SFC_0}, Δ _{SFC_1}..., Δ _{SFC_M-1}Index, described determining unit specifically is used for, and determines described SF_Index according to following methods:

Wherein, the measurement pilot frequency CSI-RS of all antenna ports be mapped to M (M=2,3 ..., when F) transmitting in individual subframe, all antenna ports are divided into M group, each subframe transmission is one group of measurement pilot frequency wherein; Described determining unit specifically is used for:

Wherein, described notification unit specifically is used for:

Embodiments of the invention also provide a kind of user terminal, comprising:

Acquiring unit obtains the transmission cycle of measurement pilot frequency in the residential quarter and the subframe position of transmission measurement pilot tone;

Determining unit for the transmission cycle of the measurement pilot frequency of obtaining according to described acquiring unit and the subframe position of transmission measurement pilot tone, is determined the subframe at measurement pilot frequency place.

Wherein, when the measurement pilot frequency CSI-RS of all antenna ports is mapped in a subframe, described SF_Index represents the subframe position that the measurement pilot frequency of all antenna ports is mapped to, and described determining unit specifically is used for, and determines the subframe at measurement pilot frequency place according to following methods:

Wherein, the measurement pilot frequency CSI-RS of all antenna ports is mapped to when transmitting in two subframes, and each transmission of each subframe is 1/2 measurement pilot frequency wherein; Use respectively Δ _{SFC_first}And Δ _{SFC_last}Expression can be for the array of the subframe of the measurement pilot transmission of front and back 1/2, and SF_Index represents Δ _{SFC_first}And Δ _{SFC_last}Index, described determining unit specifically is used for, and determines the subframe at measurement pilot frequency place according to following methods:

Wherein, the measurement pilot frequency CSI-RS of all antenna ports be mapped to M (M=2,3 ..., when F) transmitting in individual subframe, all antenna ports are divided into M group, each subframe transmission is one group of measurement pilot frequency wherein; Use respectively Δ _{SFC_0}, Δ _{SFC_1}..., Δ _{SFC_M-1}Expression can supply the array of the subframe of every group of measurement pilot transmission, and SF_Index is used for representing the array Δ _{SFC_0}, Δ _{SFC_1}..., Δ _{SFC_M-1}Index, described determining unit specifically is used for, and determines the subframe at measurement pilot frequency place according to following methods:

Described acquiring unit specifically is used for: obtain the transmission cycle of residential quarter measurement pilot frequency, the subframe position of a certain particular group transmission measurement pilot tone and the sub-frame interval between adjacent sets;

Described determining unit specifically is used for: according to the transmission cycle of described residential quarter measurement pilot frequency, the subframe position of a certain particular group transmission measurement pilot tone, obtain the subframe at described particular group transmission measurement pilot tone place, according to the subframe at described particular group transmission measurement pilot tone place and the sub-frame interval between adjacent sets, obtain the subframe at all measurement pilot frequency place.

Wherein, described acquiring unit specifically is used for:

When wherein, described acquiring unit is used for obtaining the subframe position of the transmission cycle of residential quarter measurement pilot frequency and transmission measurement pilot tone according to index:

SF_Index＝I _CSI-RS mod K

The computing of the maximum integer that is not more than x is asked in expression; Xmody represents the remainder that obtains after x is removed by y.Compared with prior art, embodiments of the invention have the following advantages:

The embodiment of the application of the invention, perfect measurement pilot transmission flow process makes the transmission cycle of the measurement pilot frequency that user terminal can send according to network side and the subframe position of transmission measurement pilot tone, determines the subframe at measurement pilot frequency place.

Description of drawings

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the flow chart of the measurement pilot frequency CSI-RS indicating means that provides in embodiments of the invention;

Fig. 2 is the flow chart of the measurement pilot frequency CSI-RS acquisition methods that provides in embodiments of the invention;

Fig. 3 is the structural representation of the network equipment that provides in embodiments of the invention;

Fig. 4 is the structural representation of the user terminal that provides in embodiments of the invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.

Embodiments of the invention provide the indicating means of a kind of measurement pilot frequency CSI-RS, by network equipment according to the transmission cycle of measurement pilot frequency and the subframe that is mapped to, determine transmission cycle and the subframe position of transmission measurement pilot tone and the user terminal in notifying cell of measurement pilot frequency in the residential quarter, make user terminal according to the transmission cycle of measurement pilot frequency and the subframe position of transmission measurement pilot tone, to determine the subframe at measurement pilot frequency place.Concrete, this indicating means comprises as shown in Figure 1:

The subframe position of step s101, the transmission cycle of determining measurement pilot frequency in the residential quarter and transmission measurement pilot tone;

Step s102, with the user terminal in the subframe position notifying cell of the transmission cycle of measurement pilot frequency and transmission measurement pilot tone.

Embodiments of the invention also provide the acquisition methods of a kind of measurement pilot frequency CSI-RS, be applied to user terminal, after user terminal is known the subframe position of the transmission cycle of measurement pilot frequency of cell notification and transmission measurement pilot tone, according to the transmission cycle of measurement pilot frequency and the subframe position of transmission measurement pilot tone, determine the subframe at measurement pilot frequency place, thereby obtain measurement pilot frequency.Concrete, this acquisition methods comprises as shown in Figure 2:

The subframe position of step s201, the transmission cycle that obtains measurement pilot frequency in the residential quarter and transmission measurement pilot tone;

Step s202, according to the transmission cycle of measurement pilot frequency and the subframe position of transmission measurement pilot tone, determine the subframe at measurement pilot frequency place.

Below in conjunction with the concrete application scenarios in the LTE-A system, the indicating means of measurement pilot frequency CSI-RS in embodiments of the invention and the embodiment of acquisition methods are described.

In embodiments of the invention, the measurement pilot frequency of LTE-A system each antenna port of small area is every T _CSI-RSIndividual subframe transmission primaries, and the measurement pilot frequency of all antenna ports can be shone upon in one or more subframe.The network equipment of LTE-A system small area can be informed by Cell Broadcast CB or alternate manner the transmission cycle T of this cell measurement of user terminal pilot tone _CSI-RSAnd the subframe position SF_Index of transmission.The cell measurement pilot period T that user terminal can receive _CSI-RSAnd measurement pilot transmission subframe position SF_Index, determine the subframe at measurement pilot frequency place, and obtain measurement pilot frequency from corresponding subframe, to carry out channel measurement.Network equipment notification transmission cycle T _CSI-RSAnd the transmission subframe position SF_Index the time, a kind of form that can adopt is as shown in table 1.

Table 1.LTE-A cell measurement pilot frequency format

Transmission cycle T _CSI-RS

Subframe position indication SF_Index

In table 1, transmission cycle T _CSI-RSExpression is every T _CSI-RSIndividual subframe measurement pilot transmission once, T _CSI-RSCan be the natural numbers such as 5,10,20.T _CSI-RSA kind of define method as shown in table 2.

Table 2. transmission cycle T _CSI-RS

Transmission cycle T _CSI-RS	Binary
		5	00
10	01
		20	10

Except using the transmission cycle T shown in above-mentioned table 1 _CSI-RSAnd outside the notice form of the subframe position SF_Index of transmission, embodiments of the invention also provide another transmission cycle T _CSI-RSAnd the Notification Method of the subframe position SF_Index of transmission, network side is with the transmission cycle T of measurement pilot frequency _CSI-RSSF_Index carries out obtaining index I after combined coding with the subframe position indication _CSI-RSThe network equipment of LTE-A system small area can be informed this index of user terminal I by Cell Broadcast CB or alternate manner _CSI-RS, the user terminal in the residential quarter can obtain index I by formula (1) _CSI-RSCorresponding transmission cycle T _CSI-RSWith subframe position indication SF_Index.

In formula (1),

The computing of the maximum integer that is not more than x is asked in expression; After xmody represents that x is removed by y, the remainder that obtains; K represents that in a radio frames, all can be used as the number of the subframe of measurement pilot transmission; T _{CSI-RS_Index}Expression measurement pilot transmission periodic key is for the transmission cycle T of sign measurement pilot frequency _CSI-RSA kind of define method is as follows:

Work as T _{CSI-RS_Index}=0 o'clock, T _CSI-RS=5;

Work as T _{CSI-RS_Index}=1 o'clock, T _CSI-RS=10;

Work as T _{CSI-RS_Index}=2 o'clock, T _CSI-RS=20;

User terminal in the residential quarter can also obtain by tabling look-up index I _CSI-RSCorresponding transmission cycle T _CSI-RSWith subframe position indication SF_Index.An example about mapping table is as shown in table 3.

Table 3. cell measurement pilot transmission cycle and a kind of assembly coding of subframe position

Signaling I _CSI-RS	Transmission cycle T _CSI-RS	Subframe position indication SF_Index
			0	5	0
1	5	1
			2	5	2
3	5	3
			4	5	4
5	5	5
			6	5	6
7	5	7
			8	5	8
9	5	9
			10	10	0
11	10	1
			12	10	2
13	10	3
			14	10	4
15	10	5
			16	10	6
17	10	7
			18	10	8
19	10	9
			20	20	0

Signaling I _CSI-RS	Transmission cycle T _CSI-RS	Subframe position indication SF_Index
			21	20	1
22	20	2
			23	20	3
24	20	4
			25	20	5
26	20	6
			27	20	7
28	20	8
			29	20	9

No matter adopt above-mentioned any mode, the definition of subframe position indication SF_Index is all relevant with the number of subframes that the measurement pilot frequency of all antenna ports is mapped to.Below respectively the corresponding measurement pilot frequency indicating means of different mappings is described.

(1) CSI-RS transmits in a subframe

For network side, when the measurement pilot frequency of all antenna ports all is mapped to when transmitting in a subframe, SF_Index represents the subframe position of all antenna port CSI-RS transmission.The number (for example for the LTE-A system, in each frame, the number of subframe is 10, i.e. F=10) that represents subframe in a frame with F, n _fThe frame number of expression system, n _sfRepresent n _fN in individual frame _sfIndividual subframe.When satisfying formula (2): the measurement pilot frequency of residential quarter is just at n _fN in individual frame _sfTransmit in individual subframe:

SF_Index＝(Fn _f+n _sf)modT _CSI-RS (2)

Network side is determined SF_Index according to above-mentioned formula (2) when the subframe that the measurement pilot frequency of determining antenna port is mapped to, and with T _CSI-RSAnd SF_Index informing user terminal.

User terminal receives T _CSI-RSAnd during SF_Index, according to formula (2), determine the subframe at LTE-A cell measurement pilot tone place, and obtain measurement pilot frequency from corresponding subframe.

(2) CSI-RS transmits in 2 subframes

For network side, when the measurement pilot frequency of all antenna ports is mapped to when transmitting in 2 subframes, each transmission of each subframe is 1/2 measurement pilot frequency wherein.Use respectively Δ _{SFC_first}And Δ _{SFC_last}Expression can be for the array of the subframe of the measurement pilot transmission of front and back 1/2, and SF_Index is used for representing the array Δ _{SFC_first}And Δ _{SFC_last}Index.The number that represents subframe in a frame with F, n _fThe frame number of expression system, n _sfRepresent n _fN in individual frame _sfIndividual subframe.When satisfying formula (3): the measurement pilot frequency of LTE-A residential quarter front 1/2 is at n _fN in individual frame _sfTransmit in individual subframe; When satisfying formula (4): behind the LTE-A residential quarter, 1/2 measurement pilot frequency is at n _fN in individual frame _sfTransmit in individual subframe.

Δ _{SFC_first}(SF_Index)＝(Fn _f+n _sf)modT _CSI-RS (3)

Δ _{SFC_last}(SF_Index)＝(Fn _f+n _sf)modT _CSI-RS (4)

Network side is determined SF_Index according to above-mentioned formula (3) and (4) when 2 subframes that the measurement pilot frequency of determining antenna port is mapped to, and with T _CSI-RSAnd SF_Index informing user terminal.

User terminal receives T _CSI-RSAnd during SF_Index, according to formula (3) and (4), determine 2 subframes at LTE-A cell measurement pilot tone place, and obtain measurement pilot frequency from corresponding subframe.

When the measurement pilot frequency of all antenna ports is transmitted, Δ is described below in 2 subframes _{SFC_first}And Δ _{SFC_last}Selection mode under different situations.

Work as T _CSI-RS=5 o'clock, Δ _{SFC_first}And Δ _{SFC_last}Optional mode as shown in any delegation of table 4:

Table 4.T _CSI-RS=5 o'clock Δs _{SFC_first}And Δ _{SFC_last}Optional mode

Δ _{SFC_first}	Δ _{SFC_last}
		{0，2，3}	{1，3，4}
{0，2}	{1，3}
		{0，3}	{1，4}
{3}	{4}
		{2}	{3}

Work as T _CSI-RS=10 o'clock, Δ _{SFC_first}And Δ _{SFC_last}Optional mode as shown in any delegation of table 5:

Table 5.T _CSI-RS=10 o'clock Δs _{SFC_first}And Δ _{SFC_last}Optional mode

Δ _{SFC_first}	Δ _{SFC_last}
		{0，2，4，6，8}	{1，3，5，7，9}
{2，4，6，8}	{3，5，7，9}
		{1，3，5，7}	{2，4，6，8}
{4，6，8}	{5，7，9}
		{3，5，7}	{4，6，8}

Work as T _CSI-RS=20 o'clock, Δ _{SFC_first}And Δ _{SFC_last}Optional mode as shown in any delegation of table 6:

Table 6.T _CSI-RS=20 o'clock Δs _{SFC_first}And Δ _{SFC_last}Optional mode

Δ _{SFC_first}	Δ _{SFC_last}
		{0，3，5，7，9，11，14，16，18}	{1，4，6，8，10，13，15，17，19}
{0，2，4，6，8，10，12，14，16，18}	{1，3，5，7，9，11，13，15，17，19}
		{1，3，5，7，9，12，14，16，18}	{2，4，6，8，11，13，15，17，19}
{2，4，6，8，12，14，16，18}	{3，5，7，9，13，15，17，19}
		{3，5，7，13，15，17}	{4，6，8，14，16，18}
{4，6，8，14，16，18}	{5，7，9，15，17，19}

(3) CSI-RS M (M=2,3 ..., F) transmit in individual subframe

For network side, when the measurement pilot frequency of all antenna ports be mapped to M (M=2,3 ..., when F) transmitting in individual subframe, all antenna ports are divided into the M group, wherein one group of each subframe transmission (namely wherein the measurement pilot frequency of 1/M) measurement pilot frequency.Use respectively Δ _{SFC_0}, Δ _{SFC_1}..., Δ _{SFC_M-1}Expression can supply the array of the subframe of every group of measurement pilot transmission.SF_Index represents the array Δ _{SFC_0}, Δ _{SFC_1}..., Δ _{SFC_M-1}Index.The number that represents subframe in a frame with F, n _fThe frame number of expression system, n _sfRepresent n _fN in individual frame _sfIndividual subframe.When satisfying formula (m), m=0,1 ..., during M-1: the measurement pilot frequency of LTE-A residential quarter m group is at n _fN in individual frame _sfTransmit in individual subframe.

Δ _{SFC_0}(SF_Index)＝(Fn _f+n _sf)modT _CSI-RS (m＝0)

Δ _{SFC_1}(SF_Index)＝(Fn _f+n _sf)modT _CSI-RS (m＝1)

Δ _{SFC_M-1}(SF_Index)＝(Fn _f+n _sf)modT _CSI-RS (m＝M-1)

The M that network side is mapped in the measurement pilot frequency of determining antenna port (M=2,3 ..., F) during individual subframe, according to above-mentioned formula (m), m=0,1 ..., F determines SF_Index, and with T _CSI-RSAnd SF_Index informing user terminal.

User terminal receives T _CSI-RSAnd during SF_Index, according to formula (m), m=0,1 ..., M-1, determine LTE-A cell measurement pilot tone place M (M=2,3 ..., F) individual subframe, and obtain measurement pilot frequency from corresponding subframe.

For this situation (three), namely measurement pilot frequency M (M=2,3 ..., when F) transmitting in individual subframe, the form that in the LTE-A system, network side informing user terminal cell measurement pilot tone adopts can also be as shown in table 7:

Table 7 LTE-A cell measurement pilot frequency format

Transmission cycle T _CSI-RS

Subframe position indication SF_Index

Subframe skew indication Δ _offset

Wherein, T _CSI-RSExpression is every T _CSI-RSIndividual subframe transmission primaries CSI-RS.When measurement pilot frequency M (M=2,3 ..., when F) transmitting in individual subframe, measurement pilot frequency is divided into M group, wherein one group of each subframe transmission (namely wherein the measurement pilot frequency of 1/M); SF_Index has represented the wherein subframe position of the measurement pilot transmission of certain particular group; Δ _OffsetRepresented the sub-frame interval between adjacent sets.

In addition, for the sub-frame interval Δ between above-mentioned adjacent sets _Offset, can also adopt the user terminal in the implicit notifying cell, for example sub-frame interval is set to constant, such as being 1 or 2 etc.

User terminal is being known transmission cycle T _CSI-RS, a certain particular group transmission measurement pilot tone SF_Index the time, can obtain the subframe at particular group transmission measurement pilot tone place; And according to the subframe at particular group transmission measurement pilot tone place and the sub-frame interval Δ between adjacent sets _Offset, obtain the subframe at all measurement pilot frequency place.

For example, in the LTE-A residential quarter, the measurement pilot frequency of 8 antenna ports of configuration is mapped to when transmitting in 2 subframes, and the LTE-A residential quarter is divided into one group with 0-3 antenna port, transmits in a subframe; 4-7 antenna port is divided into one group, transmits in the another one subframe.At this moment, SF_Index is used to indicate the subframe position of antenna port 0-3 transmission, Δ _OffsetThe skew of the subframe position that expression antenna port 4-7 transmits with antenna port 0-3 relatively.The number that represents subframe in a frame with F, n _fThe frame number of expression system, n _sfRepresent n _fN in individual frame _sfIndividual subframe.When satisfying formula (5): the measurement pilot frequency of LTE-A residential quarter port 0-3 is at n _fN in individual frame _sfTransmit in individual subframe; When satisfying formula (6): the measurement pilot frequency of LTE-A residential quarter port 4-7 is at n _fN in individual frame _sfTransmit in individual subframe.

SF_Index＝(Fn _f+n _sf)modT _CSI-RS (5)

SF_Index+Δ _offset＝(Fn _f+n _sf)modT _CSI-RS (6)

Network side is determined SF_Index and Δ according to above-mentioned formula (5) and (6) when 2 subframes that the measurement pilot frequency of determining antenna port is mapped to _Offset, and with T _CSI-RS, SF_Index and Δ _OffsetInforming user terminal.

User terminal receives T _CSI-RS, SF_Index and Δ _OffsetThe time, according to formula (3) and (4), determine 2 subframes at LTE-A cell measurement pilot tone place, and obtain measurement pilot frequency from corresponding subframe.

In addition, embodiments of the invention also provide the method for a subframe positions SF_Index implicit expression indication.With the user terminal in notifying cell implicitly of the SF_Index in table 1 and table 7.At this moment, the LTE-A residential quarter does not need the subframe position SF_Index by this cell measurement of signaling explicitly informing user terminal pilot transmission.In embodiments of the invention, a kind of implicit expression informing mode of SF_Index is as shown in formula (7):

SF_Index = (N_{ID}^{cell}) \mod (N) - - - (7)

N wherein _ID ^CellExpression physical-layer cell identifier (Physical Layer Cell Identity), N represents natural number, such as N=6.

According to above-mentioned formula (8), user terminal can be known SF_Index, and the T that further notifies according to network side _CSI-RS, or T _CSI-RSAnd Δ _OffsetDetermine the subframe at measurement pilot frequency place.The method of describing in the method for the concrete subframe at location survey amount pilot tone place really and above-described embodiment is identical, is not repeated in this description at this.

The method that provides in the embodiment of the application of the invention, perfect existing measurement pilot transmission flow process, make the transmission cycle of the measurement pilot frequency that user terminal can send according to network side and the subframe position of transmission measurement pilot tone, determine the subframe at measurement pilot frequency place.

Embodiments of the invention also provide a kind of network equipment, are used for the indication of measurement pilot frequency CSI-RS, as shown in Figure 3, comprising:

Determining unit 10 is used for determining the transmission cycle of residential quarter measurement pilot frequency and the subframe position of transmission measurement pilot tone; Wherein, the transmission cycle T of measurement pilot frequency _CSI-RSCSI-RS is every T for the expression measurement pilot frequency _CSI-RSIndividual subframe transmission primaries; The subframe position of transmission measurement pilot tone indicates SF_Index to represent by subframe position, and SF_Index is relevant with the number of subframes of the measurement pilot frequency mapping of all antenna ports.

Notification unit 20 is used for the user terminal of the subframe position notifying cell of the transmission cycle of measurement pilot frequency that determining unit is determined and transmission measurement pilot tone.

Concrete, according to the number of subframes that the measurement pilot frequency of all antenna ports is shone upon, the concrete function of determining unit 10 is different:

(1) the measurement pilot frequency CSI-RS of all antenna ports is mapped in a subframe

When the measurement pilot frequency CSI-RS of all antenna ports was mapped in a subframe, SF_Index represented the subframe position that the measurement pilot frequency of all antenna ports is mapped to, and this moment, determining unit 10 specifically was used for, and determined SF_Index according to following methods:

(2) the measurement pilot frequency CSI-RS of all antenna ports is mapped in two subframes

When the measurement pilot frequency CSI-RS of all antenna ports is mapped to when transmitting in two subframes, each transmission of each subframe is 1/2 measurement pilot frequency wherein; Use respectively Δ _{SFC_first}And Δ _{SFC_last}Expression can be for the array of the subframe of the measurement pilot transmission of front and back 1/2, and SF_Index represents Δ _{SFC_first}And Δ _{SFC_last}Index, this moment determining unit 10 specifically be used for, determine SF_Index according to following methods:

(3) the measurement pilot frequency CSI-RS of all antenna ports be mapped to M (M=2,3 ..., F) individual subframe

When the measurement pilot frequency CSI-RS of all antenna ports be mapped to M (M=2,3 ..., when F) transmitting in individual subframe, all antenna ports are divided into M group, each subframe transmission is one group of measurement pilot frequency wherein; Use respectively Δ _{SFC_0}, Δ _{SFC_1}..., Δ _{SFC_M-1}Expression can supply the array of the subframe of every group of measurement pilot transmission, and SF_Index represents the array Δ _{SFC_0}, Δ _{SFC_1}..., Δ _{SFC_M-1}Index, this moment determining unit 10 specifically be used for, determine SF_Index according to following methods:

In addition, for the measurement pilot frequency CSI-RS of all antenna ports be mapped to M (M=2,3 ..., situation about F) transmitting in individual subframe, all antenna ports are divided into the M group, each subframe transmission is one group of measurement pilot frequency wherein; Determining unit 10 can also specifically be used for: determine the transmission cycle of residential quarter measurement pilot frequency, the subframe position of a certain particular group transmission measurement pilot tone and the sub-frame interval between adjacent sets.

Corresponding, notification unit 20 specifically is used for: with the transmission cycle of residential quarter measurement pilot frequency by the user terminal in the explicit way notifying cell; With the subframe position of transmission measurement pilot tone by the user terminal in explicit way or implicit notifying cell; When the sub-frame interval between needs notices adjacent sets, with the sub-frame interval between adjacent sets by the user terminal in explicit way or implicit (interval is constant, such as be 1 or 2) notifying cell.

In addition, notification unit 20 can also specifically be used for: the transmission cycle of measurement pilot frequency and the subframe position of transmission measurement pilot tone are carried out obtaining index after combined coding, with the user terminal in the index notifying cell that obtains.

Embodiments of the invention also provide a kind of user terminal, as shown in Figure 4, comprising:

Acquiring unit 30 obtains the transmission cycle of measurement pilot frequency in the residential quarter and the subframe position of transmission measurement pilot tone; Wherein, the transmission cycle T of measurement pilot frequency _CSI-RSCSI-RS is every T for the expression measurement pilot frequency _CSI-RSIndividual subframe transmission primaries; The subframe position of transmission measurement pilot tone indicates SF_Index to represent by subframe position, and SF_Index is relevant with the number of subframes of the measurement pilot frequency mapping of all antenna ports.

Determining unit 40 for the transmission cycle of the measurement pilot frequency of obtaining according to acquiring unit and the subframe position of transmission measurement pilot tone, is determined the subframe at measurement pilot frequency place.

Concrete, according to the number of subframes that the measurement pilot frequency of all antenna ports is shone upon, the concrete function of determining unit 40 is different:

When the measurement pilot frequency CSI-RS of all antenna ports was mapped in a subframe, SF_Index represented the subframe position that the measurement pilot frequency of all antenna ports is mapped to, and this moment, determining unit 40 specifically was used for, and determined the subframe at measurement pilot frequency place according to following methods:

When the measurement pilot frequency CSI-RS of all antenna ports is mapped to when transmitting in two subframes, each transmission of each subframe is 1/2 measurement pilot frequency wherein; Use respectively Δ _{SFC_first}And Δ _{SFC_last}Expression can be for the array of the subframe of the measurement pilot transmission of front and back 1/2, and SF_Index represents Δ _{SFC_first}And Δ _{SFC_last}Index, this moment determining unit 40 specifically be used for, determine the subframe at measurement pilot frequency place according to following methods:

(3) the measurement pilot frequency CSI-RS of all antenna ports be mapped to M (M=2,3 ..., F) in individual subframe

When the measurement pilot frequency CSI-RS of all antenna ports be mapped to M (M=2,3 ..., when F) transmitting in individual subframe, all antenna ports are divided into M group, each subframe transmission is one group of measurement pilot frequency wherein; Use respectively Δ _{SFC_0}, Δ _{SFC_1}..., Δ _{SFC_M-1}Expression can supply the array of the subframe of every group of measurement pilot transmission, and SF_Index represents the array Δ _{SFC_0}, Δ _{SFC_1}..., Δ _{SFC_M-1}Index, this moment determining unit 40 specifically be used for, determine the subframe at measurement pilot frequency place according to following methods:

In addition, for the measurement pilot frequency CSI-RS of all antenna ports be mapped to M (M=2,3 ..., situation about F) transmitting in individual subframe, all antenna ports are divided into the M group, each subframe transmission is one group of measurement pilot frequency wherein.This moment, acquiring unit 30 can also specifically be used for: transmission cycle, the subframe position of a certain particular group transmission measurement pilot tone and the sub-frame interval between adjacent sets of obtaining the residential quarter measurement pilot frequency of network side notice; For example: (1) obtains the transmission cycle of the measurement pilot frequency of notifying by explicit way in the residential quarter; (2) obtain the subframe position of the transmission measurement pilot tone of notifying by explicit way or implicit in the residential quarter; (3) when the sub-frame interval between needs notice adjacent sets, obtain in the residential quarter by the sub-frame interval between the adjacent sets of explicit way or implicit notice.

Corresponding, determining unit 40 specifically is used for: the transmission cycle of the residential quarter measurement pilot frequency of obtaining according to acquiring unit 30, the subframe position of a certain particular group transmission measurement pilot tone, obtain the subframe at particular group transmission measurement pilot tone place, according to the subframe at particular group transmission measurement pilot tone place and the sub-frame interval between adjacent sets, obtain the subframe at all measurement pilot frequency place.

In addition, acquiring unit 30 can also specifically be used for: the subframe position by the transmission cycle of measurement pilot frequency and transmission measurement pilot tone of obtaining that the residential quarter notifies is carried out the index that obtains after combined coding, obtains the transmission cycle of measurement pilot frequency in the residential quarter and the subframe position of transmission measurement pilot tone according to index.Concrete acquisition methods comprises:

(1) for the index I that receives _CSI-RS, search default corresponding relation and obtain and index I _CSI-RSThe transmission cycle T of corresponding measurement pilot frequency _CSI-RSWith subframe position indication SF_Index; Or

(2) for the index I that receives _CSI-RS, utilize following formula to obtain the transmission cycle T of measurement pilot frequency _CSI-RSIndicate SF_Index with subframe position:

SF_Index＝I _CSI-RS mod K

The computing of the maximum integer that is not more than x is asked in expression; Xmody represents the remainder that obtains after x is removed by y.The equipment that provides in the embodiment of the application of the invention, perfect existing measurement pilot transmission flow process, make the transmission cycle of the measurement pilot frequency that user terminal can send according to network side and the subframe position of transmission measurement pilot tone, determine the subframe at measurement pilot frequency place.

Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.

It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the unit in accompanying drawing or flow process might not be that enforcement the present invention is necessary.

It will be appreciated by those skilled in the art that the unit in the device in embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from the present embodiment.A unit can be merged in the unit of above-described embodiment, also can further split into a plurality of subelements.

The invention described above embodiment sequence number does not represent the quality of embodiment just to description.

Claims

1. the indicating means of a measurement pilot frequency CSI-RS, is characterized in that, comprising:

Notify user terminal in described residential quarter with the subframe position of the transmission cycle of described measurement pilot frequency and transmission measurement pilot tone;

Wherein, the transmission cycle T of described measurement pilot frequency _CSI-RSCSI-RS is every T for the expression measurement pilot frequency _CSI-RSIndividual subframe transmission primaries; The subframe position of described transmission measurement pilot tone indicates SF_Index to represent by subframe position, and described SF_Index is relevant with the number of subframes of the measurement pilot frequency mapping of all antenna ports;

When the measurement pilot frequency CSI-RS of all antenna ports is mapped to M(M=2,3 ..., when F) transmitting in individual subframe, all antenna ports are divided into the M group, and each subframe transmission is one group of measurement pilot frequency wherein; Use respectively △ _{SFC_0}, △ _{SFC_1}..., △ _{SFC_M-1}Expression can supply the array of the subframe of every group of measurement pilot transmission, and SF_Index represents array △ _{SFC_0}, △ _{SFC_1}..., △ _{SFC_M-1}Index, definite method of described SF_Index is: when satisfying △ _{SFC_m}(SF_Index)=(Fn _f+ n _sf) modT _CSI-RSThe time, in the residential quarter, the measurement pilot frequency of m group is at n _fN in individual frame _sfTransmit in individual subframe; Wherein, m=0,1 ..., M-1, n _fThe frame number of expression system, n _sfRepresent n _fN in individual frame _sfIndividual subframe, F represents the number of subframe in a frame.

2. the method for claim 1, it is characterized in that, when the measurement pilot frequency CSI-RS of all antenna ports was mapped in a subframe, described SF_Index represented the subframe position that the measurement pilot frequency of all antenna ports is mapped to, and definite method of described SF_Index is:

3. the method for claim 1, is characterized in that, the measurement pilot frequency CSI-RS of all antenna ports is mapped to when transmitting in two subframes, and each transmission of each subframe is 1/2 measurement pilot frequency wherein; Use respectively △ _{SFC_first}And △ _{SFC_last}Expression can be for the array of the subframe of the measurement pilot transmission of front and back 1/2, and SF_Index represents △ _{SFC_first}And △ _{SFC_last}Index, definite method of described SF_Index is:

When satisfying △ _{SFC_first}(SF_Index)=(Fn _f+ n _sf) modT _CSI-RSThe time, in the residential quarter, front 1/2 measurement pilot frequency is at n _fN in individual frame _sfTransmit in individual subframe;

When satisfying △ _{SFC_last}(SF_Index)=(Fn _f+ n _sf) modT _CSI-RSThe time, in the residential quarter, rear 1/2 measurement pilot frequency is at n _fN in individual frame _sfTransmit in individual subframe;

4. the method for claim 1, is characterized in that, the measurement pilot frequency CSI-RS of all antenna ports is mapped to M(M=2,3 ..., when F) transmitting in individual subframe, all antenna ports are divided into the M group, and each subframe transmission is one group of measurement pilot frequency wherein; In described definite residential quarter, the subframe position of the transmission cycle of measurement pilot frequency and transmission measurement pilot tone comprises:

5. method as described in claim 1 or 4, is characterized in that, described transmission cycle and the subframe position of transmission measurement pilot tone with described measurement pilot frequency notified user terminal in described residential quarter, comprising:

6. method as described in claim 1 or 4, is characterized in that, described transmission cycle and the subframe position of transmission measurement pilot tone with described measurement pilot frequency notified user terminal in described residential quarter, comprising:

7. the acquisition methods of a measurement pilot frequency CSI-RS, is characterized in that, comprising:

According to the transmission cycle of described measurement pilot frequency and the subframe position of transmission measurement pilot tone, determine the subframe at measurement pilot frequency place;

When the measurement pilot frequency CSI-RS of all antenna ports is mapped to M(M=2,3 ..., when F) transmitting in individual subframe, all antenna ports are divided into the M group, and each subframe transmission is one group of measurement pilot frequency wherein; Use respectively △ _{SFC_0}, △ _{SFC_1}..., △ _{SFC_M-1}Expression can supply the array of the subframe of every group of measurement pilot transmission, and SF_Index represents array △ _{SFC_0}, △ _{SFC_1}..., △ _{SFC_M-1}Index, the subframe at described definite measurement pilot frequency place comprises: when satisfying △ _{SFC_m}(SF_Index)=(Fn _f+ n _sf) modT _CSI-RSThe time, in the residential quarter, the measurement pilot frequency of m group is at n _fN in individual frame _sfTransmit in individual subframe; Wherein, m=0,1 ..., M-1, n _fThe frame number of expression system, n _sfRepresent n _fN in individual frame _sfIndividual subframe, F represents the number of subframe in a frame.

8. method as claimed in claim 7, it is characterized in that, when the measurement pilot frequency CSI-RS of all antenna ports was mapped in a subframe, described SF_Index represented the subframe position that the measurement pilot frequency of all antenna ports is mapped to, and the subframe at described definite measurement pilot frequency place comprises:

9. method as claimed in claim 7, is characterized in that, the measurement pilot frequency CSI-RS of all antenna ports is mapped to when transmitting in two subframes, and each transmission of each subframe is 1/2 measurement pilot frequency wherein; Use respectively △ _{SFC_first}And △ _{SFC_last}Expression can be for the array of the subframe of the measurement pilot transmission of front and back 1/2, and SF_Index represents △ _{SFC_first}And △ _{SFC_last}Index, the subframe at described definite measurement pilot frequency place comprises:

10. method as claimed in claim 7, is characterized in that, the measurement pilot frequency CSI-RS of all antenna ports is mapped to M(M=2,3 ..., when F) transmitting in individual subframe, all antenna ports are divided into the M group, and each subframe transmission is one group of measurement pilot frequency wherein;

11. method as described in claim 7 or 10 is characterized in that, the described transmission cycle of measurement pilot frequency in the residential quarter and the subframe position of transmission measurement pilot tone obtained comprises:

12. method as described in claim 7 or 10 is characterized in that, the described transmission cycle of measurement pilot frequency in the residential quarter and the subframe position of transmission measurement pilot tone obtained comprises:

13. method as claimed in claim 12 is characterized in that, describedly obtains the transmission cycle of measurement pilot frequency in the residential quarter and the subframe position of transmission measurement pilot tone according to index, comprising:

SF_Index＝I _CSI-RSmodK

14. a network equipment is characterized in that, is used for the indication of measurement pilot frequency CSI-RS, comprising:

Notification unit, the subframe position that is used for the transmission cycle of measurement pilot frequency that described determining unit is determined and transmission measurement pilot tone is notified the user terminal of described residential quarter;

When the measurement pilot frequency CSI-RS of all antenna ports is mapped to M(M=2,3 ..., when F) transmitting in individual subframe, all antenna ports are divided into the M group, and each subframe transmission is one group of measurement pilot frequency wherein; Use respectively △ _{SFC_0}, △ _{SFC_1}..., △ _{SFC_M-1}Expression can supply the array of the subframe of every group of measurement pilot transmission, and SF_Index represents array △ _{SFC_0}, △ _{SFC_1}..., △ _{SFC_M-1}Index, described determining unit specifically is used for, and determines described SF_Index according to following methods: when satisfying △ _{SFC_m}(SF_Index)=(Fn _f+ n _sf) modT _CSI-RSThe time, in the residential quarter, the measurement pilot frequency of m group is at n _fN in individual frame _sfTransmit in individual subframe; Wherein, m=0,1 ..., M-1, n _fThe frame number of expression system, n _sfRepresent n _fN in individual frame _sfIndividual subframe, F represents the number of subframe in a frame.

15. network equipment as claimed in claim 14, it is characterized in that, when the measurement pilot frequency CSI-RS of all antenna ports is mapped in a subframe, described SF_Index represents the subframe position that the measurement pilot frequency of all antenna ports is mapped to, described determining unit specifically is used for, and determines described SF_Index according to following methods:

16. network equipment as claimed in claim 14 is characterized in that, the measurement pilot frequency CSI-RS of all antenna ports is mapped to when transmitting in two subframes, and each transmission of each subframe is 1/2 measurement pilot frequency wherein; Use respectively △ _{SFC_first}And △ _{SFC_last}Expression can be for the array of the subframe of the measurement pilot transmission of front and back 1/2, and SF_Index represents △ _{SFC_first}And △ _{SFC_last}Index, described determining unit specifically is used for, and determines described SF_Index according to following methods:

17. network equipment as claimed in claim 14 is characterized in that, the measurement pilot frequency CSI-RS of all antenna ports is mapped to M(M=2,3 ..., when F) transmitting in individual subframe, all antenna ports are divided into the M group, and each subframe transmission is one group of measurement pilot frequency wherein; Described determining unit specifically is used for:

18. network equipment as described in claim 14 or 17 is characterized in that, described notification unit specifically is used for:

19. network equipment as described in claim 14 or 17 is characterized in that, described notification unit specifically is used for:

20. a user terminal is characterized in that, comprising:

Determining unit for the transmission cycle of the measurement pilot frequency of obtaining according to described acquiring unit and the subframe position of transmission measurement pilot tone, is determined the subframe at measurement pilot frequency place;

When the measurement pilot frequency CSI-RS of all antenna ports is mapped to M(M=2,3 ..., when F) transmitting in individual subframe, all antenna ports are divided into the M group, and each subframe transmission is one group of measurement pilot frequency wherein; Use respectively △ _{SFC_0}, △ _{SFC_1}..., △ _{SFC_M-1}Expression can supply the array of the subframe of every group of measurement pilot transmission, and SF_Index is used for representing array △ _{SFC_0}, △ _{SFC_1}..., △ _{SFC_M-1}Index, described determining unit specifically is used for, and determines the subframe at measurement pilot frequency place according to following methods: when satisfying △ _{SFC_m}(SF_Index)=(Fn _f+ n _sf) modT _CSI-RSThe time, in the residential quarter, the measurement pilot frequency of m group is at n _fN in individual frame _sfTransmit in individual subframe; Wherein, m=0,1 ..., M-1, n _fThe frame number of expression system, n _sfRepresent n _fN in individual frame _sfIndividual subframe, F represents the number of subframe in a frame.

21. user terminal as claimed in claim 20, it is characterized in that, when the measurement pilot frequency CSI-RS of all antenna ports is mapped in a subframe, described SF_Index represents the subframe position that the measurement pilot frequency of all antenna ports is mapped to, described determining unit specifically is used for, and determines the subframe at measurement pilot frequency place according to following methods:

22. user terminal as claimed in claim 21 is characterized in that, the measurement pilot frequency CSI-RS of all antenna ports is mapped to when transmitting in two subframes, and each transmission of each subframe is 1/2 measurement pilot frequency wherein; Use respectively △ _{SFC_first}And △ _{SFC_last}Expression can be for the array of the subframe of the measurement pilot transmission of front and back 1/2, and SF_Index represents △ _{SFC_first}And △ _{SFC_last}Index, described determining unit specifically is used for, and determines the subframe at measurement pilot frequency place according to following methods:

23. user terminal as claimed in claim 20 is characterized in that, the measurement pilot frequency CSI-RS of all antenna ports is mapped to M(M=2,3 ..., when F) transmitting in individual subframe, all antenna ports are divided into the M group, and each subframe transmission is one group of measurement pilot frequency wherein;

24. user terminal as claimed in claim 20 is characterized in that, described acquiring unit specifically is used for:

25. user terminal as claimed in claim 20 is characterized in that, described acquiring unit specifically is used for:

26. user terminal as claimed in claim 25 is characterized in that, when described acquiring unit is used for obtaining the subframe position of the transmission cycle of residential quarter measurement pilot frequency and transmission measurement pilot tone according to index:

SF_Index＝I _CSI-RSmodK