CN103888179B

CN103888179B - A kind of virtual-antenna mapping method and equipment

Info

Publication number: CN103888179B
Application number: CN201210566124.7A
Authority: CN
Inventors: 张松; 易雄书; 向涛; 刘云
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2012-12-24
Filing date: 2012-12-24
Publication date: 2017-06-20
Anticipated expiration: 2032-12-24
Also published as: WO2014101741A1; CN103888179A

Abstract

The embodiment of the invention discloses a kind of virtual-antenna mapping method, including：N number of phase shift factor is set, and N is the integer more than 0；N number of PSD weights are generated using N number of phase shift factor respectively, wherein, different PSD weights include different phase shift factors in N number of PSD weights；When needing to send data to user equipment, in turn the data for being sent to user side will be needed to map on physical antenna using N number of PSD weights, and by the physical antenna by the data is activation after mapping to user equipment.Correspondingly the embodiment of the invention also discloses a kind of network equipment.The embodiment of the present invention can reduce user equipment to be influenceed by null.

Description

A kind of virtual-antenna mapping method and equipment

Technical field

The present invention relates to the communications field, more particularly to a kind of virtual-antenna mapping method and equipment.

Background technology

Current multiple-input and multiple-output (Multiple-Input Multiple-Output, MIMO) technology obtains extensively should With during using the technology, actually used number of physical channels may exceed the antenna port number of protocol definition, such as agreement is determined Adopted antenna port number is that 1 antenna can need to use 2,4 or 8 ends of physical antenna using the antenna in actual applications Mouthful；Protocol definition antenna port number is that 2 antenna can need to use 4 or 8 physics day using the antenna in actual applications The port of line；Protocol definition antenna port number is that 4 antenna can need to use 8 things using the antenna in actual applications Manage the port of antenna.At this moment it is accomplished by 1 antenna terminal mapping to multiple physical antenna ports, the mapping mode is in communication Virtual-antenna mapping is referred to as in technical field, wherein, the antenna port of protocol definition is virtual-antenna port.Virtual-antenna reflects Relation is penetrated for example, antenna port number is the mapping relations of 1 virtual-antenna port and the physical antenna of 2,4 or 8 ports, and Antenna port number is 2 virtual-antenna port and mapping relations of physical antenna of 4 or 8 ports etc..

The virtual-antenna mapping method being currently mainly used is cyclic delay diversity (the CDD with phase place Phase shift, PSD) mapping method, i.e., the cyclic delay diversity mapping method with phase place.The mapping method is by void The real data for intending port transmission is multiplied by PSD weights, to complete the mapping of virtual-antenna port and physical antenna port, then will multiply Sent to user equipment by channel with the data after PSD weights.Below with virtual-antenna port mapping that antenna port number is 2 Illustrated as a example by into 4 physical antennas of port：

PSD weights are as follows：

Wherein,K frequency domains carries filter index, N_FFTIt is fast Fourier transform corresponding with system broad The number of first number, k=0,1,2...N in (Fast Fourier Transformation, FFT) computing_FFT- 1, D are walked for delay It is long,Be phase shift factor, D andIt can be constant.

When network side needs through the virtual-antenna port that antenna port number is 2 to send data to user side, will S =[s₀ s₁] send to user side, just the data are multiplied by and state PSD weights, that is, it is multiplied by W_PSD(k), then sent to use by channel The data that family side, i.e. user side receive are to be shown below：

Wherein, H is channel response；

In the method, can there is uncertain phase difference between correlated channels high, i.e., different physical antenna respective channels Channel, and the channel response of the channel is approximately H=[1 11 1], i.e., So when D be 1,And k=N_FFTWhen/2,Just be 0, that is, produce null, such user side receive to data It is 0, it is impossible to realize demodulation, i.e., influenceed that data cannot be demodulated by null.And user equipment is used in actual applications Channel seldom change, so result in certain user's equipment is not influenceed by null, and some user equipmenies are at a certain section The interior influence for being constantly subjected to null.

The content of the invention

The embodiment of the invention provides a kind of virtual-antenna mapping method, it is possible to reduce user equipment is subject to the shadow of null Ring.

First aspect present invention provides a kind of virtual-antenna mapping method, including：

N number of PSD weights are generated using N number of phase shift factor respectively, wherein, different PSD in N number of PSD weights Weights include different phase shift factors；

When needing to send data to user equipment, will need to be sent to user side using N number of PSD weights in turn Data are mapped on physical antenna, and by the physical antenna by the data is activation after mapping to user equipment.

In the first possible implementation of first aspect, the N number of phase shift factor of setting includes：

M candidate's phase shift factor is set, and M is the integer more than N；

Based on the channel information of at least one user equipment, selected from the M candidate phase shift factor, generation The null that PSD weights are produced in the mapping N number of phase shift factor minimum at least one user equipment influence.

With reference in a first aspect, in second possible implementation, the N number of phase shift factor of setting includes：

W candidate's phase shift factor is set, and W is the integer more than N；

Based on the channel information of at least one user equipment, selected from the W candidate phase shift factor, generation The null that PSD weights are produced in the mapping N group phase shift factor minimum at least one user equipment influence, wherein, often The quantity of group phase shift factor is equal to virtual-antenna port number；

It is described to be included using the N number of PSD weights of N number of phase shift factor generation respectively：

N number of PSD weights are generated using the N groups phase shift factor respectively, wherein, a PSD power in N number of PSD weights Value includes a phase shift factor for group.

With reference in a first aspect, in the third possible implementation, the N number of phase shift factor of setting includes：

Selected from the advance T user equipment for obtaining, the P user equipment of probability highest influenceed by zero, wherein, P is the integer more than 0, and T is the integer more than P；

Y candidate's phase shift factor is set, and Y is the integer more than N；

Based on the channel information of the P user equipment, selected from the Y candidate phase shift factor, the PSD of generation Weights in mapping the null that produces on the N group phase shift factors of P user equipment influence minimum, wherein, every group of phase shift because The quantity of son is equal to virtual-antenna port number；

Second aspect present invention provides a kind of virtual-antenna mapping method, and the port number of virtual-antenna is more than or equal to 2, should Method includes：

N number of phase shift factor is set, and N is the integer more than 0；

Generation makes the PSD that the data that the virtual-antenna different port sends are mapped on the physical antenna of different port number Weights；

When needing to send data to user equipment, the virtual-antenna different port is sent using the PSD weights Data map on the physical antenna of different port number, and by the physical antenna by the data is activation after mapping to user Equipment.

In the first possible implementation of second aspect, the generation sends the virtual-antenna different port The PSD weights that map on the physical antenna of different port number of data include：

Generation V is different, and the data that the virtual-antenna different port sends is mapped to the thing of different port number PSD weights on reason antenna, wherein, the V is the port number of the virtual-antenna；

It is described that the data that the virtual-antenna different port sends are mapped into different port number using the PSD weights On physical antenna, and the data is activation after mapping to user equipment is included by the physical antenna：

The data that the virtual-antenna different port sends are mapped into different port using the V PSD weights in turn On several physical antennas, and by the physical antenna by the data is activation after mapping to user equipment.

Third aspect present invention provides a kind of network equipment, including：Setting unit, generation unit and map unit, wherein：

The setting unit, for setting N number of phase shift factor, N is the integer more than 0；

The generation unit, the N number of phase shift factor for being set using the setting unit respectively generates N number of PSD weights, Wherein, PSD weights different in N number of PSD weights include different phase shift factors；

The map unit, for when needing to send data to user equipment, being generated using the generation unit in turn N number of PSD weights the data for being sent to user side will be needed to map on physical antenna, and by the physical antenna will map Data is activation afterwards is to user equipment.

In the first possible implementation of the third aspect, the setting unit includes：

First sets subelement, and for setting M candidate's phase shift factor, M is the integer more than N；

First choice unit, for the channel information based at least one user equipment, subelement is set from described first Selected in M candidate's phase shift factor of setting, the null that the PSD weights of generation are produced in mapping is at least one use The minimum N number of phase shift factor of family equipment influence.

With reference to the third aspect, in second possible implementation, the setting unit includes：

Second sets subelement, and for setting W candidate's phase shift factor, W is the integer more than N；

Second select unit, for the channel information based at least one user equipment, from the W candidate phase shift factor In select, the null that the PSD weights of generation are produced in the mapping N group phase minimum at least one user equipment influence The factor is moved, wherein, every group of quantity of phase shift factor is equal to virtual-antenna port number；

The N groups phase shift factor that the generation unit is additionally operable to be selected using second select unit respectively generates N number of PSD Weights, wherein, a PSD weights include a phase shift factor for group in N number of PSD weights.

With reference to the third aspect, in the third possible implementation, the setting unit includes：

3rd select unit, for being selected from the advance T user equipment for obtaining, the probability highest influenceed by zero P user equipment, wherein, P is the integer more than 0, and T is the integer more than P；

3rd sets subelement, and for setting Y candidate's phase shift factor, Y is the integer more than N；

4th select unit, for the channel information based on the P user equipment, from the Y candidate phase shift factor In select, the null that the PSD weights of generation are produced in mapping on the N groups phase shift of P user equipment influence minimum because Son, wherein, every group of quantity of phase shift factor is equal to virtual-antenna port number；

The N groups phase shift factor that the generation unit is additionally operable to be selected using the 4th select unit respectively generates N number of PSD Weights, wherein, a PSD weights include a phase shift factor for group in N number of PSD weights.

Fourth aspect present invention provides a kind of network equipment, including：Generation unit and map unit, wherein：

Generation unit, for when the port number of virtual-antenna is more than or equal to 2, generation to make the virtual-antenna difference end The data that mouth sends map to the PSD weights on the physical antenna of different port number；

Map unit, for when needing to send data to user equipment, generating PSD weights using the generation unit will The data that the virtual-antenna different port sends are mapped on the physical antenna of different port number, and by the physical antenna By the data is activation after mapping to user equipment.

In the first possible implementation of fourth aspect, the generation unit is additionally operable to when the port of virtual-antenna When number is more than or equal to 2, generation V is different, and the data that the virtual-antenna different port sends is mapped to different ends PSD weights on the physical antenna of mouth number, wherein, the V is the port number of the virtual-antenna；

The map unit is additionally operable to when needing to send data to user equipment, in turn will using the V PSD weights The data that the virtual-antenna different port sends are mapped on the physical antenna of different port number, and by the physical antenna By the data is activation after mapping to user equipment.

In above-mentioned technical proposal, N number of phase shift factor is set, N is the integer more than 0；N number of phase shift factor is used respectively N number of PSD weights are generated, when needing to send data to user equipment, will need to be sent in turn using N number of PSD weights The data of user side are mapped on physical antenna, and by the physical antenna by the data is activation after mapping to user equipment. Can thus avoid user equipment that the influence of null is constantly subjected within a period of time, be subject to such that it is able to reduce user equipment The influence of null.

Brief description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Other accompanying drawings are obtained according to these accompanying drawings.

Fig. 1 is a kind of schematic flow sheet of virtual-antenna mapping method provided in an embodiment of the present invention；

Fig. 2 is the schematic flow sheet of another virtual-antenna mapping method provided in an embodiment of the present invention；

Fig. 3 is the schematic flow sheet of another virtual-antenna mapping method provided in an embodiment of the present invention；

Fig. 4 is the schematic flow sheet of another virtual-antenna mapping method provided in an embodiment of the present invention；

Fig. 5 is the schematic flow sheet of another virtual-antenna mapping method provided in an embodiment of the present invention；

Fig. 6 is the schematic flow sheet of another virtual-antenna mapping method provided in an embodiment of the present invention；

Fig. 7 is a kind of structural representation of network equipment provided in an embodiment of the present invention；

Fig. 8 is the structural representation of another network equipment provided in an embodiment of the present invention；

Fig. 9 is the structural representation of another network equipment provided in an embodiment of the present invention；

Figure 10 is the structural representation of another network equipment provided in an embodiment of the present invention；

Figure 11 is the structural representation of another network equipment provided in an embodiment of the present invention；

Figure 12 is the structural representation of another network equipment provided in an embodiment of the present invention；

Figure 13 is the structural representation of another network equipment provided in an embodiment of the present invention；

Figure 14 is the structural representation of another network equipment provided in an embodiment of the present invention；

Figure 15 is the structural representation of another network equipment provided in an embodiment of the present invention；

Figure 16 is the structural representation of another network equipment provided in an embodiment of the present invention.

Specific 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 carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.

Fig. 1 is a kind of schematic flow sheet of virtual-antenna mapping method provided in an embodiment of the present invention, as shown in figure 1, bag Include：

The 101st, N number of phase shift factor is set, and N is the integer more than 0；

102nd, N number of PSD weights are generated using N number of phase shift factor respectively, wherein, it is different in N number of PSD weights PSD weights include different phase shift factors；

Optionally, step 102 can include：

PSD weights are generated using a phase shift factor in above-mentioned N number of phase shift factor；

PSD weights are generated using another phase shift factor in above-mentioned N number of phase shift factor, the use for performing is recycled above-mentioned The step of another phase shift factor in N number of phase shift factor generates PSD weights, until generating N number of PSD weights.Can so protect Demonstrate,prove the factor that matches and generate a PSD weights.

103rd, when needing to send data to user equipment, will need to be sent to user using N number of PSD weights in turn The data of side are mapped on physical antenna, and by the physical antenna by the data is activation after mapping to user equipment.

Optionally, the equipment for realizing the above method can be base station.

Fig. 2 is the schematic flow sheet that the embodiment of the present invention provides another virtual-antenna mapping method, as shown in Fig. 2 bag Include：

The 201st, M candidate's phase shift factor be set, and M is the integer more than N；It is equal to

202nd, the channel information based at least one user equipment, selects from the M candidate phase shift factor, generation The PSD weights null that produces N number of phase shift factor minimum on the influence of above-mentioned at least one user equipment when mapping, N be more than Zero integer.

Optionally, by taking the virtual-antenna that port number is 2 as an example, it is assumed that the following institute of data after virtual-antenna mapping Show：

Wherein, H is channel response, H=[H₁ H₂ H₃ H₄], W_PSDK () is PSD weights, S is the data for needing to send, S =[s₀ s₁],K frequency domains carries filter index, N_FFTBe in FFT computings corresponding with system broad first number Number, k=0,1,2...N_FFT- 1, D are delay step-length,Be phase shift factor, D andIt can be constant.

It can be seen that, whenAndWhen, then now data are 0, i.e. null.And step It is what step 201 was set that channel response value, i.e., the value of above-mentioned H, and above-mentioned phase shift factor are included in channel information in 202, on State D and N_FFTAll it is constant, such step 202 can just be calculated to be worked asAndWhen, k Value, that is, calculate which subcarrier occurs null.

Optionally, step 202 can include：

Based on the channel information of at least one user equipment, above-mentioned each candidate's phase shift factor generation is calculated respectively PSD weights produce the index value of the subcarrier of null in mapping；

Selected from the M phase shift factor, the minimum number of effective subcarrier is belonged in the subcarrier of corresponding null N number of phase shift factor.

It should be noted that the subcarrier in a bandwidth system is divided into effective subcarrier and protection sideband subcarrier, example Such as：There are 1024 subcarriers in 10M broadband systems, wherein, middle 600 subcarriers are effective subcarrier, and 424, both sides is carried Ripple is the related subcarrier of protection.In actual applications, data are only transmitted in effective subcarrier, it is not to protect on related subcarrier Transmission real data.So belong to the minimum number of effective subcarrier in the subcarrier of null, then just to user equipment shadow Sound is smaller, otherwise bigger.

It should be noted that being selected from the M candidate phase shift factor in the present embodiment, the PSD weights of generation The null produced in the mapping N number of phase shift factor minimum on user equipment influence includes but is not limited to the above-mentioned choosing listed Selection method, can also select above-mentioned N number of phase shift factor by experimental data from above-mentioned M phase shift factor, can also first by Above-mentioned M candidate phase shift factor generates M candidate's PSD weights, then calculates the null that each candidate PSD weights is produced in mapping To user equipment influence degree, the location of such as number of null subcarrier, or null subcarrier is (for example：Whether it is effective Subcarrier)；The null of the production N number of PSD weights minimum on user equipment influence are selected from M candidate's PSD weights again, from And select the N number of phase shift factor in this N number of PSD weights.For example：For time division duplex (Time Division Duplexing, TDD) system, select N number of optimal phase shift factor to obtain different phase shift factors by uplink SRS channel estimation Effective bandwidth average signal and interference plus noise ratio (Signal to Interference plus after corresponding PSD weightings Noise Ratio, SINR), compare and select the maximum corresponding phase shift factors of N number of SINR for above-mentioned N number of phase shift factor.

203rd, N number of PSD weights are generated using N number of phase shift factor respectively, wherein, it is different in N number of PSD weights PSD weights include different phase shift factors.

Optionally, the null pair that the PSD weights of the N number of phase shift factor generation selected due to step 202 are produced when mapping User equipment influence is minimum, and so when the PSD weights generated using N number of phase shift factor are mapped data, null is to use The influence that family equipment is caused is just minimum.

Optionally, so that the virtual-antenna that port number is 2 is mapped to 4 physical antennas of port as an example, step 203 generation PSD weights are shown below：

PSD weights are as follows：

Wherein,K frequency domains carries filter index, N_FFTIn being quick FFT computings corresponding with system broad The number of first number, k=0,1,2...N_FFT- 1, D are delay step-length,It is phase shift factor,So can be with N number of PSD weights are obtained, in a PSD weightsTake a value.

Optionally, so that the virtual-antenna that port number is 4 is mapped to 8 physical antennas of port as an example, step 203 generation PSD weights are shown below：

PSD weights are as follows：

Wherein,N number of PSD weights can be so obtained, in a PSD weightsTake a value.

204th, when needing to send data to user equipment, will need to be sent to user using N number of PSD weights in turn The data of side are mapped on physical antenna, and by the physical antenna by the data is activation after mapping to user equipment.

Optionally, the moment for PSD weights being updated in step 204 can be the moment that upstream data switches to downlink data, Or downlink data switches to the moment of upstream data.The efficiency in one-way data transfer can so be ensured.

In above-mentioned technical proposal, on the basis of above example, realize and selected from multiple candidate's phase shift factors The null phase shift factor minimum on user equipment influence, so influence of the data after mapping to user equipment is just less.

Fig. 3 is the schematic flow sheet of another virtual-antenna mapping method of the offer of the embodiment of the present invention, such as Fig. 3 institutes Show, including：

The 301st, W candidate's phase shift factor be set, and W is the integer more than N；

302nd, the channel information based at least one user equipment, selects from the W candidate phase shift factor, generation The PSD weights null that produces N group phase shift factor minimum on the influence of above-mentioned at least one user equipment when mapping, wherein, often The quantity of group phase shift factor is equal to virtual-antenna port number；

Optionally, optionally, by taking the virtual-antenna that port number is 2 as an example, it is assumed that the data after virtual-antenna mapping It is as follows：

Wherein,Be one group of phase shift factor, D andIt can be constant.

It can be seen that, whenAndWhen, then now data are 0, i.e. null.And Channel response value, i.e., the value of above-mentioned H, and above-mentioned phase shift factor are included in channel information in step 202 for step 201 is set , above-mentioned D and N_FFTAll it is constant, such step 202 can just be calculated to be worked asAnd When, the value of k calculates which subcarrier occurs null.

Optionally, when transmission channel is correlated channels high, i.e., above-mentioned H can be approximated to be 1, so due to above-mentioned two phase The factor is moved to be different from, even if thisBut not necessarily meetI.e. But not necessarily meetCan be subtracted using different phase shift factors in a PSD weights such that it is able to be drawn The probability that few null occurs.

303rd, N number of PSD weights are generated using the N groups phase shift factor respectively, wherein, one in N number of PSD weights PSD weights include a phase shift factor for group.

Optionally, so that the virtual-antenna that port number is 2 is mapped to 4 physical antennas of port as an example, step 303 generation PSD weights are shown below：

PSD weights are as follows：

Wherein, Can so obtain N number of PSD weights, in a PSD weightsIn taking a class value, and a PSD weightsValue is different.

Optionally, so that the virtual-antenna that port number is 4 is mapped to 8 physical antennas of port as an example, step 303 generation PSD weights are shown below：

PSD weights are as follows：

Wherein, N number of PSD weights can be so obtained, in a PSD weightsTake a class value, and one In individual PSD weightsValue is different.

304th, when needing to send data to user equipment, will need to be sent to user using N number of PSD weights in turn The data of side are mapped on physical antenna, and by the physical antenna by the data is activation after mapping to user equipment.

In above-mentioned technical proposal, on the basis of above example, realize the phase shift that is included in same PSD weights because Son is different, the probability of null appearance can be so reduced, such that it is able to reduce influence of the null to user equipment.

Fig. 4 is the schematic flow sheet of another virtual-antenna mapping method of the offer of the embodiment of the present invention, such as Fig. 4 institutes Show, including：

401st, selected from the advance T user equipment for obtaining, the P user equipment of probability highest influenceed by zero, Wherein, P is the integer more than 0, and T is the integer more than P.

Optionally, above-mentioned T user equipment can be the user equipment of same cell, the probability highest influenceed by zero P user equipment can be the user equipment of currently used correlated channels high.P can selected in correlation high is subject to null The most user equipment of influence.The channel information and/or metrical information for being also based on user equipment are filtered out and above-mentioned receive zero shadow Loud P user equipment of probability highest.

The 402nd, Y candidate's phase shift factor be set, and Y is the integer more than N；

403rd, the channel information based on the P user equipment, selects from the Y candidate phase shift factor, generation PSD weights in mapping the null that produces on N number of phase shift factor of P user equipment influence minimum, N is more than zero Integer.

It should be noted that because above-mentioned P user equipment is the user equipment that possible be influenceed by null, being so based on The PSD weights of above-mentioned N number of phase shift factor generation that these user equipmenies are selected are in mapping process to the influence of user equipment It is just smaller.

404th, N number of PSD weights are generated using N number of phase shift factor respectively, wherein, it is different in N number of PSD weights PSD weights include different phase shift factors.

405th, when needing to send data to user equipment, will need to be sent to user using N number of PSD weights in turn The data of side are mapped on physical antenna, and by the physical antenna by the data is activation after mapping to user equipment.

Used as a kind of optional implementation method, step 403 can include：

Optionally, step 404 can include：

In the implementation method, it is possible to achieve the phase shift factor included in same PSD weights is different, can so be subtracted The probability that few null occurs, such that it is able to reduce influence of the null to user equipment.

In above-mentioned technical proposal, on the basis of above example, realize being based on to be influenceed there is user to set by null Alternative goes out N number of phase shift factor, and so the PSD weights of generation are in mapping, and the influence to user equipment is smaller.

Fig. 5 is the schematic flow sheet of another virtual-antenna mapping method provided in an embodiment of the present invention, and the present embodiment can It is the virtual-antenna more than or equal to 2 to be applied to antenna port number, as shown in figure 5, including：

501st, generation makes the data that the virtual-antenna different port sends map on the physical antenna of different port number PSD weights.

Optionally, the data that above-mentioned virtual-antenna different port sends are mapped on the physical antenna of different port number can be with Refer to that the port number of the corresponding physical antenna of same virtual-antenna different port is different.

Optionally, so that the virtual-antenna that antenna port number is 2 is mapped to 4 physical antennas of port as an example, step 501 is given birth to Into PSD weights, be shown below：

PSD weights are as follows：

Wherein,When S is the data that needs send, S=[s₀ s₁], you can with by antenna port number be 2 it is virtual The transmission data of a port are mapped to 3 physical antennas of port in antenna mapping, and the transmission data of another port are reflected 1 physical antenna of port is mapped to, to realize that the data that the virtual-antenna different port sends map to different port number On physical antenna.

Optionally, the data after so being mapped using above-mentioned PSD weights can be shown below：

And it is above-mentioned onlyAnd H₄For 0 when, null just occurs.So compareAndThe probability of appearance can be small, because InAnd the conditionThe number of middle first number is more, is so equal to 0 probability With regard to fewer.Therefore step 501 generation makes the data that the virtual-antenna different port sends map to the thing of different port number PSD weights on reason antenna, it is possible to reduce the appearance of null.

Optionally, so that the virtual-antenna that antenna port number is 4 is mapped to 8 physical antennas of port as an example, step 501 is given birth to Into PSD weights, be shown below：

PSD weights are as follows：

Wherein,

502nd, when needing to send data to user equipment, using the PSD weights by the virtual-antenna different port The data of transmission are mapped on the physical antenna of different port number, and by the physical antenna by the data is activation after mapping extremely User equipment.

In above-mentioned technical proposal, generation makes the data that the virtual-antenna different port sends map to different port number PSD weights on physical antenna, when needing to send data to user equipment, using the PSD weights by the virtual-antenna The data that different port sends are mapped on the physical antenna of different port number, and by the physical antenna by the number after mapping According to transmission to user equipment.Null appearance can be so reduced, such that it is able to reduce influence of the null to user equipment.

Fig. 6 is the schematic flow sheet of another virtual-antenna mapping method provided in an embodiment of the present invention, and the present embodiment can It is the virtual-antenna more than or equal to 2 to be applied to antenna port number, as shown in fig. 6, including：

601st, generation V is different, and the data that the virtual-antenna different port sends is mapped to different port number Physical antenna on PSD weights, wherein, the V is the port number of the virtual-antenna；

Optionally, so that the virtual-antenna that antenna port number is 2 is mapped to 4 physical antennas of port as an example, step 601 is given birth to Into PSD weights, be shown below：

First PSD weights is as follows：

Wherein,

First PSD weights is as follows：

Wherein,

Optionally, above-mentioned V different PSD weights can be the V different PSD weights for matching.I.e. above-mentioned V is not Same PSD weights, it is ensured that in above-mentioned V different PSD weights when using in turn, same port exists in the virtual-antenna The port of the physical antenna being mapped to twice before and after the data of transmission is to complete different.It is such as empty at the T0 moment as shown in above formula The data for intending the transmission of antenna port 1 are mapped on 3 physical antennas of port, and another port 2 is mapped to 1 physics of port On antenna, the data that virtual-antenna port 1 sends are mapped on 1 physical antenna of port, another port 2 in T1 then It is mapped to 3 physical antennas of port.

Optionally, optionally, so that the virtual-antenna that antenna port number is 4 is mapped to 8 physical antennas of port as an example, step The PSD weights of rapid 601 generation, are shown below：

First PSD weights is as follows：

Wherein,

First PSD weights is as follows：

Wherein,

602nd, when need to user equipment send data when, in turn using the V PSD weights by the virtual-antenna not The data sent with port are mapped on the physical antenna of different port number, and by the physical antenna by the data after mapping Send to user equipment.

Optionally, the data for sending are mapped using above-mentioned V PSD weights in turn, so it is achieved that reducing On the basis of null occurs, it is to avoid the null of appearance only influences same user equipment.

In above-mentioned technical proposal, on the basis of above example, realize on the basis of null appearance is reduced, it is to avoid The null of appearance only influences same user equipment, so as to reduce influence of the null to user equipment.

It is below apparatus of the present invention embodiment, apparatus of the present invention embodiment is used to perform the inventive method embodiment one to six The method of realization, for convenience of description, illustrate only the part related to the embodiment of the present invention, and particular technique details is not disclosed , refer to the embodiment of the present invention one, embodiment two, embodiment three, example IV, embodiment five and embodiment six.

Fig. 7 is a kind of structural representation of network equipment provided in an embodiment of the present invention, as shown in fig. 7, comprises：Set single Unit 11, generation unit 12 and map unit 13, wherein：

Setting unit 11, for setting N number of phase shift factor, N is the integer more than 0；

Generation unit 12, the N number of phase shift factor for being set using setting unit 11 respectively generates N number of PSD weights, its In, different PSD weights include different phase shift factors in N number of PSD weights；

Map unit 13, for when need to user equipment send data when, in turn using generation unit 12 generate it is N number of PSD weights will need the data for being sent to user side to map on physical antenna, and after the physical antenna is by mapping Data is activation is to user equipment.

Optionally, generation unit 12 can be also used for using a phase shift factor in above-mentioned N number of phase shift factor to generate PSD Weights；Another phase shift factor generation PSD weights in above-mentioned N number of phase shift factor are reused, the above-mentioned N of use for performing is recycled The step of another phase shift factor in individual phase shift factor generates PSD weights, until generating N number of PSD weights.Can so ensure One factor that matches generates a PSD weights.

Optionally, the above-mentioned network equipment can be base station.

Fig. 8 is the structural representation of another network equipment provided in an embodiment of the present invention, as shown in figure 8, including：Set Unit 21, generation unit 22 and map unit 23, setting unit 21 include：First sets subelement 211 and first choice unit 212, wherein：

First sets subelement 211, and for setting M candidate's phase shift factor, M is the integer more than N；

First choice unit 212, for the channel information based at least one user equipment, subelement is set from first Selected in the 211 M candidate's phase shift factors for setting, the null that the PSD weights of generation are produced when mapping is to described at least one The minimum N number of phase shift factor of individual user equipment influence.

Generation unit 22, weighs for generating N number of PSD using N number of phase shift factor of the selection of first choice unit 212 respectively Value, wherein, different PSD weights include different phase shift factors in N number of PSD weights；

Map unit 23, for when need to user equipment send data when, in turn using generation unit 22 generate it is N number of PSD weights will need the data for being sent to user side to map on physical antenna, and after the physical antenna is by mapping Data is activation is to user equipment.

Optionally, the PSD weights of the N number of phase shift factor generation selected due to first choice unit 212 are produced when mapping Null minimum is influenceed on user equipment, so when the PSD weights generated using N number of phase shift factor are mapped data, Null is just minimum to the influence that user equipment is caused.

It can be seen that, whenAndWhen, then now data are 0, i.e. null.And first It is the first setting that channel response value, i.e., the value of above-mentioned H, and above-mentioned phase shift factor are included in channel information in select unit 212 What subelement 211 was set, above-mentioned D and N_FFTAll it is constant, such first choice unit 212 can just be calculated works asAndWhen, the value of k calculates which subcarrier occurs null.

Optionally, first choice unit 212 can be also used for the channel information based at least one user equipment, count respectively The PSD weights of above-mentioned each candidate's phase shift factor generation are calculated in mapping, the index value of the subcarrier of null is produced；Again from institute M phase shift factor is stated to select, belong in the subcarrier of corresponding null effective subcarrier minimum number N number of phase shift because Son.

It should be noted that being selected from the M candidate phase shift factor in the present embodiment, the PSD weights of generation The null produced in the mapping N number of phase shift factor minimum on user equipment influence includes but is not limited to the above-mentioned choosing listed Selection method, first choice unit 212 can also select above-mentioned N number of phase shift by experimental data from above-mentioned M phase shift factor Above-mentioned M candidate phase shift factor first can also be generated M candidate's PSD weights by the factor, first choice unit 212, then calculate every The null that individual candidate PSD weights are produced in mapping is to user equipment influence degree, such as number of null subcarrier, or null The location of carrier wave is (for example：Whether it is effective subcarrier)；The null pair of production is selected from M candidate's PSD weights again The minimum N number of PSD weights of user equipment influence, so as to select the N number of phase shift factor in this N number of PSD weights.

Optionally, when the moment for PSD weights being updated in map unit 24 can be that upstream data switches to downlink data Carve, or downlink data switches to the moment of upstream data.The efficiency in one-way data transfer can so be ensured.

Optionally, so that the virtual-antenna that port number is 2 is mapped to 4 physical antennas of port as an example, generation unit 22 is given birth to Into PSD weights be shown below：

PSD weights are as follows：

Optionally, so that the virtual-antenna that port number is 4 is mapped to 8 physical antennas of port as an example, generation unit 22 is given birth to Into PSD weights be shown below：

PSD weights are as follows：

Fig. 9 is the structural representation of another network equipment provided in an embodiment of the present invention, as shown in figure 9, including：Set Unit 31, generation unit 32 and map unit 33, setting unit 31 include：Second sets the select unit of subelement 311 and second 312, wherein：

Second sets subelement 311, and for setting W candidate's phase shift factor, W is the integer more than N；

First choice unit 312, for the channel information based at least one user equipment, from the W candidate phase shift Selected in the factor, the null that the PSD weights of generation are produced in mapping influences minimum N at least one user equipment Group phase shift factor, wherein, every group of quantity of phase shift factor is equal to virtual-antenna port number；

Generation unit 33, the N groups phase shift factor for being selected using the second select unit 312 respectively is generated N number of PSD and weighed Value, wherein, a PSD weights include a phase shift factor for group in N number of PSD weights.

Map unit 34, for when needing to send data to user equipment, use N number of PSD weights need in turn The data for being sent to user side are mapped on physical antenna, and are extremely used the data is activation after mapping by the physical antenna Family equipment.

Wherein,Be one group of phase shift factor, D andIt can be constant.

It can be seen that, whenAndWhen, then now data are 0, i.e. null.And It is second that channel response value, i.e., the value of above-mentioned H, and above-mentioned phase shift factor are included in channel information in second select unit 312 Set what subelement 311 was set, above-mentioned D and N_FFTAll it is constant, such second select unit 312 can just be calculated to be worked asAndWhen, the value of k calculates which subcarrier occurs null.

Optionally, when transmission channel is correlated channels high, i.e., above-mentioned H can be approximated to be 1, so due to above-mentioned two phase The factor is moved to be different from, even if thisBut not necessarily meetI.e.But Not necessarily meetCan be reduced using different phase shift factors in a PSD weights such that it is able to be drawn The probability that null occurs.

Optionally, so that the virtual-antenna that port number is 2 is mapped to 4 physical antennas of port as an example, generation unit 33 is given birth to Into PSD weights be shown below：

PSD weights are as follows：

Optionally, so that the virtual-antenna that port number is 4 is mapped to 8 physical antennas of port as an example, generation unit 33 is given birth to Into PSD weights be shown below：

PSD weights are as follows：

Figure 10 is the structural representation of another network equipment provided in an embodiment of the present invention, as shown in Figure 10, including：If Unit 41, generation unit 42 and map unit 43 are put, setting unit 41 includes：3rd select unit the 411, the 3rd sets subelement 412 and the 4th select unit 413, wherein：

3rd select unit 411, for being selected from the advance T user equipment for obtaining, by zero probability for influenceing most P user equipment high, wherein, P is the integer more than 0, and T is the integer more than P；

3rd sets subelement 412, and for setting Y candidate's phase shift factor, Y is the integer more than N；

4th select unit 413, for the channel information based on the P user equipment, from Y candidate phase shift because Selected in son, the null that the PSD weights of generation are produced in mapping influences minimum N number of phase shift to the P user equipment The factor, N is the integer more than zero

Generation unit 42, the N groups phase shift factor for being selected using the 4th select unit 413 respectively is generated N number of PSD and weighed Value, wherein, different PSD weights include different phase shift factors in N number of PSD weights.

Map unit 43, for when needing to send data to user equipment, use N number of PSD weights need in turn The data for being sent to user side are mapped on physical antenna, and are extremely used the data is activation after mapping by the physical antenna Family equipment.

Optionally, above-mentioned T user equipment can be the user equipment of same cell, the probability highest influenceed by zero P user equipment can be the user equipment of currently used correlated channels high.Can also be remembered according to the null history of user equipment Record, select P is influenceed most user equipmenies by null.It is also based on channel information and/or the measurement of user equipment Information sifting goes out above-mentioned P user equipment of probability highest for receiving zero to influence.

Used as a kind of optional implementation method, the 4th select unit 413 can be also used for based on the P user equipment Channel information, selects from the Y candidate phase shift factor, and the null that the PSD weights of generation are produced in mapping is to the P The minimum N group phase shift factors of individual user equipment influence, wherein, every group of quantity of phase shift factor is equal to virtual-antenna port number；

The N groups phase shift factor generation that generation unit 42 can be also used for being selected using the 4th select unit 413 respectively is N number of PSD weights, wherein, a PSD weights include a phase shift factor for group in N number of PSD weights.

Figure 11 is the structural representation of another network equipment provided in an embodiment of the present invention, and the present embodiment can apply to Antenna port number is the virtual-antenna more than or equal to 2, as shown in figure 11, including：Generation unit 51 and map unit 52, its In：

Generation unit 51, for when the port number of virtual-antenna is more than or equal to 2, generation to make the virtual-antenna different The data that port sends map to the PSD weights on the physical antenna of different port number；

Map unit 52, for when needing to send data to user equipment, PSD weights being generated using the generation unit The data that the virtual-antenna different port sends are mapped on the physical antenna of different port number, and by the physics day Line is by the data is activation after mapping to user equipment.

Optionally, so that the virtual-antenna that antenna port number is 2 is mapped to 4 physical antennas of port as an example, generation unit The PSD weights of 51 generations, are shown below：

PSD weights are as follows：

Optionally, so that the virtual-antenna that antenna port number is 4 is mapped to 8 physical antennas of port as an example, generation unit The PSD weights of 51 generations, are shown below：

PSD weights are as follows：

Wherein,

Figure 12 is the structural representation of another network equipment provided in an embodiment of the present invention, and the present embodiment can apply to Antenna port number is the virtual-antenna more than or equal to 2, as shown in figure 12, including：Generation unit 61 and map unit 62, its In：

Generation unit 61, for when the port number of virtual-antenna is more than or equal to 2, generation V to be different, and makes described The data that virtual-antenna different port sends map to the PSD weights on the physical antenna of different port number, wherein, the V is The port number of the virtual-antenna；

Map unit 62, for when needing to send data to user equipment, in turn using the V PSD weights by institute The data for stating the transmission of virtual-antenna different port are mapped on the physical antenna of different port number, and will by the physical antenna Data is activation after mapping is to user equipment.

Optionally, so that the virtual-antenna that antenna port number is 2 is mapped to 4 physical antennas of port as an example, generation unit The PSD weights of 61 generations, are shown below：

First PSD weights is as follows：

Wherein,

First PSD weights is as follows：

Wherein,

Optionally, optionally, it is raw so that the virtual-antenna that antenna port number is 4 is mapped to 8 physical antennas of port as an example Into the PSD weights of the generation of unit 61, it is shown below：

First PSD weights is as follows：

Wherein,

First PSD weights is as follows：

Wherein,

Figure 13 is the structural representation of another network equipment provided in an embodiment of the present invention, as shown in figure 13, including：Deposit Reservoir 71 and processor 72, wherein, the storage batch processing code of memory 71, processor 72 is used to call what memory 71 was stored Program code, for performing following operation：

N number of phase shift factor is set, and N is the integer more than 0；

Optionally, the operation for generating N number of PSD weights using the N number of phase shift factor respectively that processor 72 is performed can be with Including：

Optionally, realize that the above-mentioned network equipment can be base station.

Figure 14 is the structural representation of another network equipment provided in an embodiment of the present invention, as shown in figure 14, including：Deposit Reservoir 81 and processor 82, wherein, the storage batch processing code of memory 81, processor 82 is used to call what memory 81 was stored Program code, for performing following operation：

M candidate's phase shift factor is set, and M is the integer more than N；It is equal to

Based on the channel information of at least one user equipment, selected from the M candidate phase shift factor, generation The null that PSD weights are produced when the mapping N number of phase shift factor minimum on the influence of above-mentioned at least one user equipment, N is more than zero Integer；

It can be seen that, whenAndWhen, then now data are 0, i.e. null.And process It is setting in processor 82 that channel response value, i.e., the value of above-mentioned H, and above-mentioned phase shift factor are included in channel information in device 82 , above-mentioned D and N_FFTAll it is constant, can be just calculated in such processor 82 and worked asAndWhen, the value of k calculates which subcarrier occurs null.

Optionally, the channel information based at least one user equipment that processor 82 is performed, from the M candidate phase shift Selected in the factor, the null that the PSD weights of generation are produced when mapping is N number of on above-mentioned at least one user equipment influence minimum The operation of phase shift factor can include：

It should be noted that being selected from the M candidate phase shift factor in the present embodiment, the PSD weights of generation The null produced in the mapping N number of phase shift factor minimum on user equipment influence includes but is not limited to the above-mentioned choosing listed Selection method, can also select above-mentioned N number of phase shift factor by experimental data from above-mentioned M phase shift factor, can also first by Above-mentioned M candidate phase shift factor generates M candidate's PSD weights, then calculates the null that each candidate PSD weights is produced in mapping To user equipment influence degree, the location of such as number of null subcarrier, or null subcarrier is (for example：Whether it is effective Subcarrier)；The null of the production N number of PSD weights minimum on user equipment influence are selected from M candidate's PSD weights again, from And select the N number of phase shift factor in this N number of PSD weights.For example：For TDD system, select N number of optimal phase shift factor can be with The average SINR of effective bandwidth after the corresponding PSD of the different phase shift factors of uplink SRS channel estimation acquisition is weighted, compares and selects most The big corresponding phase shift factors of N number of SINR are above-mentioned N number of phase shift factor.

Optionally, so that the virtual-antenna that port number is 2 is mapped to 4 physical antennas of port as an example, processor 82 is generated PSD weights be shown below：

PSD weights are as follows：

Optionally, so that the virtual-antenna that port number is 4 is mapped to 8 physical antennas of port as an example, processor 82 is generated PSD weights be shown below：

PSD weights are as follows：

Used as a kind of optional implementation method, the program code that processor 82 is additionally operable to adjust the storage of memory 81 is performed such as Lower operation：

W candidate's phase shift factor is set, and W is the integer more than N；

Based on the channel information of at least one user equipment, selected from the W candidate phase shift factor, generation The null that PSD weights are produced when the mapping N group phase shift factor minimum on the influence of above-mentioned at least one user equipment, wherein, every group The quantity of phase shift factor is equal to virtual-antenna port number；

N number of PSD weights are generated using the N groups phase shift factor respectively, wherein, a PSD power in N number of PSD weights Value includes a phase shift factor for group；

Wherein,Be one group of phase shift factor, D andIt can be constant.

It can be seen that, whenAndWhen, then now data are 0, i.e. null.And Channel response value, i.e., the value of above-mentioned H, and above-mentioned phase shift factor are included in channel information in processor 82 for processor 82 is set , above-mentioned D and N_FFTAll it is constant, such processor 82 can just be calculated works asAnd When, the value of k calculates which subcarrier occurs null.

PSD weights are as follows：

Y candidate's phase shift factor is set, and Y is the integer more than N；

Based on the channel information of the P user equipment, selected from the Y candidate phase shift factor, the PSD of generation The null that weights are produced in the mapping N number of phase shift factor minimum on P user equipment influence, N is the integer more than zero；

As a kind of optional implementation method, the channel information based on the P user equipment that processor 82 is performed, from Selected in the Y candidate phase shift factor, the null that the PSD weights of generation are produced in mapping is to the P user equipment Influenceing the operation of minimum N number of phase shift factor can include：

Optionally, the operation for generating N number of PSD weights using the N number of phase shift factor respectively that processor 82 is performed can be with Including：

Used as a kind of optional implementation method, the equipment can also include：

Transmitter 83, for processor 82 to be performed the need for user side send data is activation go out, transmitter 83 It can be specifically above-mentioned physical antenna.

Figure 15 is the structural representation of another network equipment provided in an embodiment of the present invention, as shown in figure 15, including：Deposit Reservoir 91 and processor 92, wherein, the storage batch processing code of memory 91, processor 92 is used to call what memory 91 was stored Program code, for performing following operation：

Optionally, so that the virtual-antenna that antenna port number is 2 is mapped to 4 physical antennas of port as an example, processor 92 The PSD weights of generation, are shown below：

PSD weights are as follows：

Optionally, so that the virtual-antenna that antenna port number is 4 is mapped to 8 physical antennas of port as an example, processor 92 The PSD weights of generation, are shown below：

PSD weights are as follows：

Wherein,

Figure 16 is the structural representation of another network equipment provided in an embodiment of the present invention, as shown in figure 16, including：Deposit Reservoir 101 and processor 102, wherein, the storage batch processing code of memory 101, processor 102 is used to call memory 101 The program code of storage, for performing following operation：

When needing to send data to user equipment, in turn using the V PSD weights by the different end of the virtual-antenna Mouthful data for sending are mapped on the physical antenna of different port number, and by the physical antenna by the data is activation after mapping To user equipment.

Optionally, so that the virtual-antenna that antenna port number is 2 is mapped to 4 physical antennas of port as an example, processor 102 The PSD weights of generation, are shown below：

First PSD weights is as follows：

Wherein,

First PSD weights is as follows：

Wherein,

Optionally, optionally, so that the virtual-antenna that antenna port number is 4 is mapped to 8 physical antennas of port as an example, place The PSD weights of the reason generation of device 102, are shown below：

First PSD weights is as follows：

Wherein,

First PSD weights is as follows：

Wherein,

Transmitter 103, for processor 102 to be performed the need for user side send data is activation go out, transmitter 103 can be specifically above-mentioned physical antenna.

One of ordinary skill in the art will appreciate that all or part of flow in realizing above-described embodiment method, can be The hardware of correlation is instructed to complete by computer program, described program can be stored in a computer read/write memory medium In, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic Dish, CD, read-only memory (Read-On1y Memory, ROM) or random access memory (RandomAccess Memory, abbreviation RAM) etc..

Above disclosed is only present pre-ferred embodiments, can not limit the right model of the present invention with this certainly Enclose, therefore the equivalent variations made according to the claims in the present invention, still belong to the scope that the present invention is covered.

Claims

1. a kind of virtual-antenna mapping method, it is characterised in that including：

N number of phase shift factor is set, and N is the integer more than 0；

N number of cyclic delay diversity PSD weights with phase place are generated using N number of phase shift factor respectively, wherein, the N Different PSD weights include different phase shift factors in individual PSD weights；

When needing to send data to user equipment, will need to be sent to the data of user side using N number of PSD weights in turn Map on physical antenna, and by the physical antenna by the data is activation after mapping to user equipment；

The N number of phase shift factor of setting includes：

M candidate's phase shift factor is set, and M is the integer more than N；

Based on the channel information of at least one user equipment, selected from the M candidate phase shift factor, the PSD power of generation The null that value is produced in the mapping N number of phase shift factor minimum at least one user equipment influence；

Or,

The N number of phase shift factor of setting includes：

W candidate's phase shift factor is set, and W is the integer more than N；

Based on the channel information of at least one user equipment, selected from the W candidate phase shift factor, the PSD power of generation The null that value is produced in the mapping N group phase shift factor minimum at least one user equipment influence, wherein, every group of phase shift The quantity of the factor is equal to virtual-antenna port number；

N number of PSD weights are generated using the N groups phase shift factor respectively, wherein, a PSD weights bag in N number of PSD weights Containing a phase shift factor for group；

Or,

The N number of phase shift factor of setting includes：

Selected from the advance T user equipment for obtaining, the P user equipment of probability highest influenceed by null, wherein, P It is the integer more than 0, T is the integer more than P；

Y candidate's phase shift factor is set, and Y is the integer more than N；

Based on the channel information of the P user equipment, selected from the Y candidate phase shift factor, the PSD weights of generation In mapping, the null that produces is on the N group phase shift factors of P user equipment influence minimum, wherein, every group of phase shift factor Quantity is equal to virtual-antenna port number；

N number of PSD weights are generated using the N groups phase shift factor respectively, wherein, a PSD weights bag in N number of PSD weights Containing a phase shift factor for group.

2. a kind of virtual-antenna mapping method, the port number of virtual-antenna is more than or equal to 2, it is characterised in that including：

Generation weighs the PSD that the data that the virtual-antenna different port sends are mapped on the physical antenna of different port number Value；

When needing to send data to user equipment, the number for being sent the virtual-antenna different port using the PSD weights According on the physical antenna for mapping to different port number, and the data is activation after mapping to user is set by the physical antenna It is standby.

3. method as claimed in claim 2, it is characterised in that the generation makes the number that the virtual-antenna different port sends Include according to the PSD weights on the physical antenna for mapping to different port number：

Generation V is different, and the data that the virtual-antenna different port sends is mapped to the physics day of different port number PSD weights on line, wherein, the V is the port number of the virtual-antenna；

The physics that the data that the virtual-antenna different port sends are mapped to different port number using the PSD weights On antenna, and the data is activation after mapping to user equipment is included by the physical antenna：

The data that the virtual-antenna different port sends are mapped into different port number using the V PSD weights in turn On physical antenna, and by the physical antenna by the data is activation after mapping to user equipment.

4. a kind of network equipment, it is characterised in that including：Setting unit, generation unit and map unit, wherein：

The generation unit, the N number of phase shift factor for being set using the setting unit respectively generates N number of PSD weights, its In, different PSD weights include different phase shift factors in N number of PSD weights；

The map unit, for when need to user equipment send data when, in turn using the generation unit generate it is N number of PSD weights will need the data for being sent to user side to map on physical antenna, and after the physical antenna is by mapping Data is activation is to user equipment；

Wherein, the setting unit includes：

First choice unit, for the channel information based at least one user equipment, sets subelement and sets from described first M candidate's phase shift factor in select, the null that the PSD weights of generation are produced in mapping sets at least one user The minimum N number of phase shift factor of standby influence；

Or,

The setting unit includes：

Second select unit, for the channel information based at least one user equipment, selects from the W candidate phase shift factor Select out, the null that the PSD weights of generation are produced in the mapping N group phase shift minimum at least one user equipment influence because Son, wherein, every group of quantity of phase shift factor is equal to virtual-antenna port number；

The N groups phase shift factor that the generation unit is additionally operable to be selected using second select unit respectively generates N number of PSD power Value, wherein, a PSD weights include a phase shift factor for group in N number of PSD weights；

Or,

The setting unit includes：

3rd select unit, for being selected from the advance T user equipment for obtaining, the probability highest P influenceed by null Individual user equipment, wherein, P is the integer more than 0, and T is the integer more than P；

4th select unit, for the channel information based on the P user equipment, selects from the Y candidate phase shift factor Select out, the null that the PSD weights of generation are produced in mapping influences minimum N group phase shift factors to the P user equipment, its In, every group of quantity of phase shift factor is equal to virtual-antenna port number；

The N groups phase shift factor that the generation unit is additionally operable to be selected using the 4th select unit respectively generates N number of PSD power Value, wherein, a PSD weights include a phase shift factor for group in N number of PSD weights.

5. a kind of network equipment, it is characterised in that including：Generation unit and map unit, wherein：

Generation unit, for when the port number of virtual-antenna is more than or equal to 2, generation to send out the virtual-antenna different port The data sent map to the PSD weights on the physical antenna of different port number；

Map unit, for when needing to send data to user equipment, generating PSD weights using the generation unit will be described The data that virtual-antenna different port sends are mapped on the physical antenna of different port number, and will be reflected by the physical antenna Data is activation after penetrating is to user equipment.

6. equipment as claimed in claim 5, it is characterised in that the generation unit is additionally operable to when the port number of virtual-antenna is big When 2, generation V is different, and the data that the virtual-antenna different port sends is mapped to different port number Physical antenna on PSD weights, wherein, the V is the port number of the virtual-antenna；

The map unit is additionally operable to when needing to send data to user equipment, in turn will be described using the V PSD weights The data that virtual-antenna different port sends are mapped on the physical antenna of different port number, and will be reflected by the physical antenna Data is activation after penetrating is to user equipment.