CN102377514B - Scrambling code initial value generation method for channel state information reference signal and equipment - Google Patents

Abstract

The invention discloses a scrambling code initial value generation method for a channel state information reference signal and network side equipment. The scrambling code initial value generation method comprises the following step that: a network side is used for determining the position information of the channel state information reference signal and placing the position information of the channel state information reference signal into a bit area of a scrambling code initial value of the channel state information reference signal. The invention provides a scrambling code initial value generation solution of the channel state information reference signal in an LET-A system; and moreover, as a terminal can obtain the scrambling code initial value of the channel state information reference signal while obtaining related position parameters of the channel state information reference signal, a scrambling code sequence value of the reference signal is further obtained, and the terminal is not required to be independently informed of the scrambling code initial value, so that the signaling overhead is also saved.

Description

The scrambler initial value of channel state information reference signals generates method and apparatus

Technical field

The present invention relates to wireless communication technology, particularly the initial value generation method of a kind of scrambler of channel state information reference signals and network equipment.

Background technology

MIMO (multiple input multiple output, multiple-input, multiple-output) technology, as important raising transmission quality and the physical layer multi-antenna technology of efficiency, is played an important role in communication system of new generation.LTE (1ong term evolution, Long Term Evolution) system is supported transmit diversity, the multiple MIMO technology such as space multiplexing technique and BF (Beam forming, beam shaping).Along with the further evolution of LTE standard, system will be supported more antenna port (as 8 antenna ports), and MU-MIMO (MultipleUsers-MIMO, multiuser MIMO) technology also can be enhanced.In order to bring into play better MIMO technical advantage, LTE-A (LTE-advance, long-term evolution upgrading) also there is corresponding variation in pilot configuration, descending pilot frequency is divided into demodulation pilot frequency DMRS (demodulation reference signal, demodulated reference signal) and measurement pilot frequency CSI-RS (Channel State Information reference signal, channel state information reference signals), be respectively used to separate mediation channel measurement.

Descending pilot frequency in LTE system is divided into special pilot frequency for user DRS (UE-specific reference signals, user-specific pilot signal) and public guide frequency CRS (Cell-specific reference signals, the exclusive pilot signal in community), be respectively used to wave beam forming and channel measurement and demodulation.The scrambler initial value of CRS is:

$c_{\mathrm{init}}=2^{10}\·(7\·(n_s+1)+l+1)\·(2\·N_{\mathrm{ID}}^{\mathrm{cell}}+1)+2\·N_{\mathrm{ID}}^{\mathrm{cell}}+N_{\mathrm{CP}}$

$N_{\mathrm{CP}}=\left\{\begin{array}{cc}1& \mathrm{fornormalCP}\\ 0& \mathrm{forextendedCP}\end{array}\right.$

Wherein: n _sbe timeslot number, 1, l is OFDM (Orthogonal Frequency Division Multiplex, OFDM) symbol sequence number in time slot,

community ID, N _cpbe the Cyclic Prefix of OFDM, 1for normal CP refers to N when system is used short CP _cpbe that 1, o for extended CP refers to N when system is used long CP _cpbe 0.

OFDM symbol sequence number in the scrambler sequence of CRS and timeslot number, No. ID, community, time slot, OFDM Cyclic Prefix are relevant.

The deficiencies in the prior art are:

At present, adopt DRS and CRS to be respectively used to wave beam forming and channel measurement and solution timing in LTE system, prior art provides the value of the scrambler initial value of CRS in LTE; But at LTE-A pilot configuration, there is variation, descending pilot frequency has been divided into DMRS and CSI-RS and for separating, is in harmonious proportion after channel measurement, also do not had technical scheme to solve the value of CSI RS scrambler sequence initial value in LTE-A.

Summary of the invention

Technical problem solved by the invention has been to provide the initial value generation method of scrambler and the network equipment of the channel state information reference signals in a kind of LTE-A system.

The initial value generation method of scrambler that a kind of CSI RS is provided in the embodiment of the present invention, comprises the steps:

Network side is determined the positional information of CSI RS;

Network side is positioned over the positional information of CSI RS the bit regions of the scrambler initial value of CSI RS;

Wherein, the positional information of described CSI RS comprises one of following parameter or its combination: pattern numeral index pattern index, cycle, port number in subframe skew, cell ID cell ID, subframe;

The positional information of CSI RS is positioned over to the bit regions of the scrambler initial value of CSI RS, comprises one of following mode or its combination:

When scrambler initial value is combined by timeslot number, cell ID and length cyclic prefix CP, scrambler initial value is:

$N_{\mathrm{CP}}=\left\{\begin{array}{cc}1& \mathrm{fornormalCP}\\ 0& \mathrm{forextendedCP}\end{array}\right.;$

When scrambler initial value is combined by timeslot number, cell ID and pattern index, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and port number port_num, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and length CP, scrambler initial value is:

$N_{\mathrm{CP}}=\left\{\begin{array}{cc}1& \mathrm{fornormalCP}\\ 0& \mathrm{forextendedCP}\end{array}\right.;$

When scrambler initial value is combined by timeslot number, cell ID, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and length CP, scrambler initial value is:

$N_{\mathrm{CP}}=\left\{\begin{array}{cc}1& \mathrm{fornormalCP}\\ 0& \mathrm{forextendedCP}\end{array}\right.;$

When scrambler initial value is combined by timeslot number, cell ID and port_num, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and port_num, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and port_num, scrambler initial value is:

At scrambler initial value, by timeslot number, cell ID, port_num, cycle while combining, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID, scrambler initial value is:

Wherein, n _stimeslot number,

community ID, N _cpbe the Cyclic Prefix of OFDM, pattem_index is the pilot frequency locations pattern of CSI RS in subframe, and port_num is CSI RS port number, and 1 for normal CP refers to N when system is used short CP _cpbe that 1,0for extended CP refers to N when system is used long CP _cpbe that 0, period is the cycle.

A kind of network equipment is provided in the embodiment of the present invention, has comprised:

Positional information module, for determining the positional information of CSI RS;

Initial value generation module, for being positioned over the positional information of CSI RS the bit regions of the scrambler initial value of CSI RS;

Positional information module is further used for determining the positional information of the CSI RS that comprises one of following parameter or its combination: subframe skew, cell ID, pattern index, cycle, port number;

Initial value generation module is further used for when the positional information of CSI RS being positioned over to the bit regions of scrambler initial value of CSI RS, one of in the following manner or its combination place:

When scrambler initial value is combined by timeslot number, cell ID and length CP, scrambler initial value is:

$N_{\mathrm{CP}}=\left\{\begin{array}{cc}1& \mathrm{fornormalCP}\\ 0& \mathrm{forextendedCP}\end{array}\right.;$

When scrambler initial value is combined by timeslot number, cell ID and pattern index, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and port_num, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and length CP, scrambler initial value is:

$N_{\mathrm{CP}}=\left\{\begin{array}{cc}1& \mathrm{fornormalCP}\\ 0& \mathrm{forextendedCP}\end{array}\right.;$

When scrambler initial value is combined by timeslot number, cell ID, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and length CP, scrambler initial value is:

$N_{\mathrm{CP}}=\left\{\begin{array}{cc}1& \mathrm{fornormalCP}\\ 0& \mathrm{forextendedCP}\end{array}\right.;$

When scrambler initial value is combined by timeslot number, cell ID and port_num, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and port_num, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and port_num, scrambler initial value is:

At scrambler initial value, by timeslot number, cell ID, port_num, cycle while combining, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID, scrambler initial value is:

Wherein, n _stimeslot number, community ID, N _cpbe the Cyclic Prefix of OFDM, pattern_index is the pilot frequency locations pattern of CSI RS in subframe, and port_num is CSI RS port number, and 1for normal CP refers to N when system is used short CP _cpbe that 1,0for extended CP refers to N when system is used long CP _cpbe that 0, period is the cycle.

Beneficial effect of the present invention is as follows:

By the way, the technical scheme that the embodiment of the present invention provides not only provides the scrambler initial value of CSI RS in LTE-A system to generate scheme, and, because terminal just can obtain the scrambler initial value of channel state information reference signals when obtaining the location-dependent parameters of channel state information reference signals, and then acquisition reference signal scrambler sequence value, need not be again notification terminal scrambler initial value separately, thereby also saved signaling consumption.

Accompanying drawing explanation

Fig. 1 is the initial value generation method implementing procedure of the scrambler of CSI RS in embodiment of the present invention schematic diagram;

Fig. 2 is network equipment structural representation in the embodiment of the present invention.

Embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.

Fig. 1 is the initial value generation method implementing procedure of the scrambler of CSI RS schematic diagram, as shown in the figure, can comprise the steps:

Step 101, network side are determined the positional information of CSI RS;

Step 102, network side are positioned over the positional information of CSI RS the bit regions of the scrambler initial value of CSI RS.

In enforcement, the positional information of CSI RS can comprise one of following parameter or its combination:

Subframe skew, cell ID (cell ID), pattern index (pattern numeral index), cycle, port_num (port number).

Wherein, pattern index is the pilot frequency locations pattern of CSI RS in subframe, and port_num is the port number of CSI RS.

In enforcement, can be according to discrimination the positional information of CSI RS need to be positioned over to the bit regions of the scrambler initial value of CSI RS.

Concrete, can, according to selecting one or their combination to be positioned over the bit regions of the scrambler initial value of CSI RS in need to being offset in subframe of discrimination, cell ID, pattern index, cycle, these parameters of port_num, also will describe with example below.

In enforcement, can be when the positional information of CSI RS being positioned over to the bit regions of scrambler initial value of CSI RS, by the bit regions zero padding of not filling up.

In concrete enforcement, scrambler initial value can be definite by the combination of CSI RS relevant parameter (subframe skew, cell ID, pattern index, cycle, port number), and the positional information that obtains CSI RS just can obtain scrambler initial value.These parameters or parameter combinations are positioned over to the different bit regions of scrambler initial value, the region zero padding of not filling up, thus form scrambler initial value.

In enforcement, the positional information of CSI RS is positioned over to the bit regions of the scrambler initial value of CSI RS, can be offset in subframe, select one or their combination to be positioned over the bit regions of the scrambler initial value of CSI RS in cell ID, pattern index, cycle, these parameters of port_num, with example, illustrate how to place below.

Embodiment 1

When scrambler initial value is combined by timeslot number, cell ID and length CP, scrambler initial value is:

$N_{\mathrm{CP}}=\left\{\begin{array}{cc}1& \mathrm{fornormalCP}\\ 0& \mathrm{forextendedCP}\end{array}\right.;$

Wherein, n _stimeslot number,

community ID, N _cpbe the Cyclic Prefix of OFDM, 1for normal CP refers to N when system is used short CP _cpbe that 1,0for extended CP refers to N when system is used long CP _cpbe 0.

Embodiment 2

When scrambler initial value is combined by timeslot number, cell ID and pattern index, scrambler initial value is:

Wherein, n _stimeslot number,

be community ID, pattern_index is the pilot frequency locations pattern of CSI RS in subframe.

Embodiment 3

When scrambler initial value is combined by timeslot number, cell ID and port_num, scrambler initial value is:

Wherein, n _stimeslot number,

be community ID, port_num is CSI RS port number.

Embodiment 4

When scrambler initial value is combined by timeslot number, cell ID, scrambler initial value is:

Wherein, n _stimeslot number,

community ID.

Embodiment 5

When scrambler initial value is combined by timeslot number, cell ID, scrambler initial value is:

Wherein, n _stimeslot number,

community ID.

Embodiment 6

When scrambler initial value is combined by timeslot number, cell ID and length CP, scrambler initial value is:

$N_{\mathrm{CP}}=\left\{\begin{array}{cc}1& \mathrm{fornormalCP}\\ 0& \mathrm{forextendedCP}\end{array}\right.;$

Wherein, n _stimeslot number,

community ID, N _cpbe the Cyclic Prefix of OFDM, 1for normal CP refers to N when system is used short CP _cpbe that 1,0for extended CP refers to N when system is used long CP _cpbe 0.

Embodiment 7

When scrambler initial value is combined by timeslot number, cell ID, scrambler initial value is:

Wherein, n _stimeslot number,

community ID.

Embodiment 8

When scrambler initial value is combined by timeslot number, cell ID and length CP, scrambler initial value is:

$N_{\mathrm{CP}}=\left\{\begin{array}{cc}1& \mathrm{fornormalCP}\\ 0& \mathrm{forextendedCP}\end{array}\right.;$

Wherein, n _stimeslot number,

community ID, N _cpbe the Cyclic Prefix of OFDM, 1for normal CP refers to N when system is used short CP _cpbe that 1,0for extended CP refers to N when system is used long CP _cpbe 0.

Embodiment 9

When scrambler initial value is combined by timeslot number, cell ID and port_num, scrambler initial value is:

Wherein, n _stimeslot number, be community ID, port_num is CSI RS port number.

Embodiment 10

When scrambler initial value is combined by timeslot number, cell ID, port_num, scrambler initial value is:

Wherein, n _stimeslot number,

be community ID, port_num is CSI RS port number.

Embodiment 11

When scrambler initial value is combined by timeslot number, cell ID, port_num, scrambler initial value is:

Wherein, n _stimeslot number,

be community ID, port_num is CSI RS port number.

Embodiment 12

At scrambler initial value, by timeslot number, cell ID, port_num, cycle while combining, scrambler initial value is:

Wherein, n _stimeslot number, be community ID, port_num is CSI RS port number, and period is the cycle.

Embodiment 13

When scrambler initial value is combined by timeslot number, cell ID, scrambler initial value is:

Wherein, n _stimeslot number,

community ID.

Based on same inventive concept, a kind of network equipment is also provided in the embodiment of the present invention, because the principle that network equipment is dealt with problems is similar to the initial value generation method of scrambler of channel state information reference signals, therefore the enforcement of network equipment can, referring to the enforcement of method, repeat part and repeat no more.

Fig. 2 is network equipment structural representation, as shown in the figure, in network equipment, can comprise:

Positional information module 201, for determining the positional information of CSI RS;

Initial value generation module 202, for being positioned over the positional information of CSI RS the bit regions of the scrambler initial value of CSI RS.

In enforcement, positional information module can also be further used for determining the positional information of the CSI RS that comprises one of following parameter or its combination:

Subframe skew, cell ID, pattern index, cycle, port number.

In enforcement, initial value generation module can also be further used for the positional information of CSI RS need to being positioned over to the bit regions of the scrambler initial value of CSI RS according to discrimination.

In enforcement, initial value generation module can also be further used for when the positional information of CSI RS being positioned over to the bit regions of scrambler initial value of CSI RS, one of in the following manner or its combination place:

When scrambler initial value is combined by timeslot number, Cell ID and length CP, scrambler initial value is:

$N_{\mathrm{CP}}=\left\{\begin{array}{cc}1& \mathrm{fornormalCP}\\ 0& \mathrm{forextendedCP}\end{array}\right.;$

When scrambler initial value is combined by timeslot number, cell ID and pattern index, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and port_num, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and length CP, scrambler initial value is:

$N_{\mathrm{CP}}=\left\{\begin{array}{cc}1& \mathrm{fornormalCP}\\ 0& \mathrm{forextendedCP}\end{array}\right.;$

When scrambler initial value is combined by timeslot number, cell ID, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and length CP, scrambler initial value is:

$N_{\mathrm{CP}}=\left\{\begin{array}{cc}1& \mathrm{fornormalCP}\\ 0& \mathrm{forextendedCP}\end{array}\right.;$

When scrambler initial value is combined by timeslot number, cell ID and port_num, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and port_num, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and port_num, scrambler initial value is:

At scrambler initial value, by timeslot number, cell ID, port_num, cycle while combining, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID, scrambler initial value is:

Wherein, n _stimeslot number,

community ID, N _cpbe the Cyclic Prefix of OFDM, pattern_index is the pilot frequency locations pattern of CSI RS in subframe, and port_num is CSI RS port number, and 1for normal CP refers to N when system is used short CP _cpbe that 1,0for extended CP refers to N when system is used long CP _cpbe that 0, period is the cycle.

In enforcement, initial value generation module can also be further used for when the positional information of CSI RS being positioned over to the bit regions of scrambler initial value of CSI RS, by the bit regions zero padding of not filling up.

For convenience of description, the each several part of the above device is divided into various modules with function or unit is described respectively.Certainly, when enforcement is of the present invention, the function of each module or unit can be realized in same or a plurality of software or hardware.

As seen from the above-described embodiment, in CSI RS scrambler initial value arranges, CSI RS relevant parameter (subframe skew, cell ID, pattern index, cycle) is independently filled respectively to the different bit regions of scrambler initial value.

And CSI RS relevant parameter (subframe skew, cell ID, pattern index, cycle) computing combination is filled to the different bit regions of scrambler initial value.

By the way, the technical scheme that the embodiment of the present invention provides not only provides the scrambler initial value of CSI RS in LTE-A system to generate scheme, and, because terminal just can obtain the scrambler initial value of channel state information reference signals when obtaining the location-dependent parameters of channel state information reference signals, and then acquisition reference signal scrambler sequence value, need not be again notification terminal scrambler initial value separately, thereby also saved signaling consumption.

Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect completely.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code one or more.

The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be in computer program instructions realization flow figure and/or block diagram each flow process and/or the flow process in square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction of carrying out by the processor of computer or other programmable data processing device is produced for realizing the device in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.

These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.

These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame on computer or other programmable devices.

Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.

Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.

Claims (6)

1. the initial value generation method of the scrambler of channel state information reference signals CSI RS, is characterized in that, comprises the steps:

Network side is determined the positional information of CSI RS;

Network side is positioned over the positional information of CSI RS the bit regions of the scrambler initial value of CSI RS;

Wherein, the positional information of described CSI RS comprises one of following parameter or its combination: pattern numeral index pattern index, cycle, port number in subframe skew, cell ID cell ID, subframe;

The positional information of CSI RS is positioned over to the bit regions of the scrambler initial value of CSI RS, comprises one of following mode or its combination:

When scrambler initial value is combined by timeslot number, cell ID and length cyclic prefix CP, scrambler initial value is:

$N_{\mathrm{CP}}=\left\{\begin{array}{cc}1& \mathrm{fornormalCP}\\ 0& \mathrm{forextendedCP}\end{array}\right.;$

When scrambler initial value is combined by timeslot number, cell ID and pattern index, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and port number port_num, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and length CP, scrambler initial value is:

$N_{\mathrm{CP}}=\left\{\begin{array}{cc}1& \mathrm{fornormalCP}\\ 0& \mathrm{forextendedCP}\end{array}\right.;$

When scrambler initial value is combined by timeslot number, cell ID, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and length CP, scrambler initial value is:

$N_{\mathrm{CP}}=\left\{\begin{array}{cc}1& \mathrm{fornormalCP}\\ 0& \mathrm{forextendedCP}\end{array}\right.;$

When scrambler initial value is combined by timeslot number, cell ID and port_num, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and port_num, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and port_num, scrambler initial value is:

At scrambler initial value, by timeslot number, cell ID, port_num, cycle while combining, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID, scrambler initial value is:

Wherein, n _stimeslot number,

community ID, N _cpbe the Cyclic Prefix of OFDM, pattern_index is the pilot frequency locations pattern of CSI RS in subframe, and port_num is CSI RS port number, and 1for normal CP refers to N when system is used short CP _cpbe that 1,0for extended CP refers to N when system is used long CP _cpbe that 0, period is the cycle.

2. the method for claim 1, is characterized in that, according to discrimination, the positional information of CSI RS need to be positioned over to the bit regions of the scrambler initial value of CSI RS.

3. method as claimed in claim 1 or 2, is characterized in that, while the positional information of CSI RS being positioned over to the bit regions of scrambler initial value of CSI RS, by the bit regions zero padding of not filling up.

4. a network equipment, is characterized in that, comprising:

Positional information module, for determining the positional information of CSI RS;

Initial value generation module, for being positioned over the positional information of CSI RS the bit regions of the scrambler initial value of CSI RS;

Positional information module is further used for determining the positional information of the CSI RS that comprises one of following parameter or its combination: subframe skew, cellID, pattern index, cycle, port number;

Initial value generation module is further used for when the positional information of CSI RS being positioned over to the bit regions of scrambler initial value of CSI RS, one of in the following manner or its combination place:

When scrambler initial value is combined by timeslot number, cell ID and length CP, scrambler initial value is:

$N_{\mathrm{CP}}=\left\{\begin{array}{cc}1& \mathrm{fornormalCP}\\ 0& \mathrm{forextendedCP}\end{array}\right.;$

When scrambler initial value is combined by timeslot number, cell ID and pattern index, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and port_num, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and length CP, scrambler initial value is:

$N_{\mathrm{CP}}=\left\{\begin{array}{cc}1& \mathrm{fornormalCP}\\ 0& \mathrm{forextendedCP}\end{array}\right.;$

When scrambler initial value is combined by timeslot number, cell ID, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and length CP, scrambler initial value is:

$N_{\mathrm{CP}}=\left\{\begin{array}{cc}1& \mathrm{fornormalCP}\\ 0& \mathrm{forextendedCP}\end{array}\right.;$

When scrambler initial value is combined by timeslot number, cell ID and port_num, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and port_num, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID and port_num, scrambler initial value is:

At scrambler initial value, by timeslot number, cell ID, port_num, cycle while combining, scrambler initial value is:

When scrambler initial value is combined by timeslot number, cell ID, scrambler initial value is:

Wherein, n _stimeslot number,

community ID, N _cpbe the Cyclic Prefix of OFDM, pattern_index is the pilot frequency locations pattern of CSI RS in subframe, and port_num is CSI RS port number, and 1for normal CP refers to N when system is used short CP _cpbe that 1,0for extended CP refers to N when system is used long CP _cpbe that 0, period is the cycle.

5. network equipment as claimed in claim 4, is characterized in that, initial value generation module is further used for the positional information of CSI RS to be positioned over to the bit regions of the scrambler initial value of CSI RS according to discrimination.

6. the network equipment as described in claim 4 or 5, is characterized in that, initial value generation module is further used for when the positional information of CSI RS being positioned over to the bit regions of scrambler initial value of CSI RS, by the bit regions zero padding of not filling up.

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