CN101848024B - Method and device for shaping wave beam of intelligent antenna - Google Patents

Abstract

The invention discloses a method and a device for shaping a wave beam of an intelligent antenna. The intelligent antenna consists of K antennae and space division multiple is M, wherein K and M are natural numbers and K is more than or equal to M. The method comprises the following steps of: dividing the K antennae into M sub-antenna groups, wherein one antenna only belongs to one sub-antenna group and the M sub-antenna groups are in one-to-one correspondence to M-dimensional space; preprocessing user data and wave beam shaping coefficient according to the antenna state, wherein each user data in the M-dimensional space is only transmitted on the antenna in the sub-antenna group corresponding to the space where the user is; and performing wave beam shaping calculation on the preprocessed user data and wave beam shaping coefficient. The technical scheme of the method and the system can reduce the calculated quantity in the wave beam shaping process and can reduce cost.

Description

A kind of intelligent antenna beam shaping method and device

Technical field

The present invention relates to communication technical field, particularly relate to a kind of intelligent antenna beam shaping method and device.

Background technology

Along with data user's continuous increase with to the increase day by day of high-speed data service demand, the data throughout of wireless system and spectrum efficiency become the bottleneck of data service development day by day.The space division multiplexing technology utilizes different user to cut apart the different passage of formation, and the user of spatial separation uses identical physical resource, realizes the multiplexing of physical resource, thereby improves the data throughput and the spectrum utilization efficiency of wireless system.

The space division multiplexing The Application of Technology will significantly increase the operand of intelligent antenna beam shaping.After user's modulating data of in the existing implementation each being tieed up multiplexing space carries out wave beam forming respectively, to the data behind each dimension figuration get and, what obtain is the total data that sends to antenna with value.

Be made up of K root antenna when smart antenna, the multiple of space division multiplexing is M, i.e. M dimension space, and the maximum number of user in the one-dimensional space is N, d_burst _p ^{(m, n)}Be m-dimensional space nth user's modulating data, on behalf of certain, subscript p handle p sampled point of time slot; Tx_beamfor min g ^{(m, n, k)}It is the forming coefficient of m-dimensional space nth user correspondence on antenna k; D_ready _p ^(k)For sending to the total data on the antenna k, then have following formula to set up:

$N{d\_\mathrm{ready}}_p^{\left(k\right)}=\underset{m=1}{\overset{M}{\mathrm{\Σ}}}\underset{n=1}{\overset{N}{\mathrm{\Σ}}}d\_{\mathrm{burst}}_p^{(m,n)}\·\mathrm{Tx}\_\mathrm{beamfor}\min g^{(m,n,k)}---\left(1\right)$

Wherein, k=1 ..., K; M=1 ..., M; N=1 ..., N; " " expression multiplication.

By formula (1) as can be seen, for the smart antenna of forming by K root antenna, need the multiplication of M * N * K time to calculate total logarithmic data that just can obtain sending on the antenna at each sampled point.

Therefore the multiplication computation amount in the existing intelligent antenna beam shaping method is huge, to the using and realize having produced restriction of space division multiplexing technology, has improved cost.

Summary of the invention

The invention discloses a kind of intelligent antenna beam shaping method, this method can reduce the amount of calculation in the wave beam forming process, reduces cost.

The invention also discloses a kind of intelligent antenna beam shaping device, this device can reduce the amount of calculation in the wave beam forming process, reduces cost.

For achieving the above object, technical scheme of the present invention is achieved in that

The invention discloses a kind of intelligent antenna beam shaping method, for smart antenna by K root antenna form, it is empty that to divide multiple be M, K and M are natural number and K more than or equal to M, K root antenna partition is a M sub-antenna sets, and an antenna only belongs to a sub-antenna sets, the situation corresponding one by one between M sub-antenna sets and the M dimension space, that each user's data in the M dimension space only sends on the antenna in this pairing sub antenna group in space, user place, this method comprises:

For each user in the M dimension space distributes an antenna condition parameter; The antenna that the pairing sub antenna group in antenna condition parameter indication space, user place is comprised;

According to the antenna condition parameter user's modulating data is carried out preliminary treatment, obtain user's modulating data that every antenna will send;

According to the antenna condition parameter wave beam forming coefficient is carried out preliminary treatment, obtain the pairing wave beam forming coefficient of user's modulating data that every antenna will send;

The pairing wave beam forming coefficient of user's modulating data that uses user's modulating data that every antenna obtaining after the preliminary treatment will send and every antenna to send carries out beam forming processing.

The invention also discloses a smart antenna beam forming means; the apparatus used in the smart antenna is composed of K antennas, space division multiple of M; K and M are natural numbers greater than or equal to M and K is; K antennas into the M sub-antenna group;, and an antenna to a single sub antenna group; M antenna groups and sub-one correspondence between the M-dimensional space; M-dimensional space data for each user on the user where only the corresponding sub-space antenna groups transmitted on the antenna case; the apparatus comprising: upper module and the beam forming module; wherein

Upper layer module is used to each user in the M dimension space to distribute an antenna condition parameter, and the antenna condition parameter is sent to the wave beam forming module; The antenna that the pairing sub antenna group in antenna condition parameter indication space, user place is comprised;

The wave beam forming module is used for according to the antenna condition parameter user's modulating data being carried out preliminary treatment, obtains user's modulating data that every antenna will send; Be used for the wave beam forming coefficient being carried out preliminary treatment, obtain the pairing wave beam forming coefficient of user's modulating data that every antenna will send according to the antenna condition parameter; The pairing wave beam forming coefficient of user's modulating data that is used to use user's modulating data that every antenna obtaining after the preliminary treatment will send and every antenna to send carries out beam forming processing.

By as seen above-mentioned, the present invention is this to be made up of K root antenna for smart antenna, empty branch multiple is M, K and M are natural number and K more than or equal to M, K root antenna partition is a M sub-antenna sets, and an antenna only belongs to a sub-antenna sets, corresponding one by one between individual sub-antenna sets of M and the M dimension space, the situation that each user data in the M dimension space only sends on the antenna in this pairing sub antenna group in space, user place, by using the antenna condition parameter, user's modulating data and antenna forming coefficient are rearranged according to antenna, M antenna sets with M dimension space correspondence, user data on one or more antenna of each antenna sets and the multidimensional of wave beam forming coefficient are calculated the computing that is converted to user data and wave beam forming coefficient on each one-dimensional space of K root antenna, make and only need carry out beam forming processing one-dimensional space user's modulating data for every antenna, this all needs modulating data to M dimension space user to carry out beam forming processing with respect to prior art for every antenna to compare, significantly reduce amount of calculation, reduced cost.

Description of drawings

Fig. 1 is the flow chart of a kind of intelligent antenna beam shaping method of the embodiment of the invention;

Fig. 2 is the composition structure chart of a kind of intelligent antenna beam shaping device of the embodiment of the invention;

Fig. 3 is the composition structure chart of the wave beam forming module 202 among Fig. 2.

Embodiment

Fig. 1 is the flow chart of a kind of intelligent antenna beam shaping method of the embodiment of the invention.As shown in Figure 1, for smart antenna by K root antenna form, it is empty that to divide multiple be M, K and M are natural number and K more than or equal to M, K root antenna partition is a M sub-antenna sets, and an antenna only belongs to a sub-antenna sets, corresponding one by one between M sub-antenna sets and the M dimension space, this method of situation that the modulation of each user in the M dimension space and the data after the beam forming processing only send on the antenna in this pairing sub antenna group in space, user place comprises:

Step 101 is for each user in the M dimension space distributes an antenna condition parameter; The antenna that the pairing sub antenna group in antenna condition parameter indication space, user place is comprised.

Here, empty branch multiple is M, has been the M dimension space.

Step 102 is carried out preliminary treatment according to the antenna condition parameter to user's modulating data, obtains user's modulating data that every antenna will send; According to the antenna condition parameter wave beam forming coefficient is carried out preliminary treatment, obtain the pairing wave beam forming coefficient of user's modulating data that every antenna will send.

Step 103, the pairing wave beam forming coefficient of user's modulating data that uses user's modulating data that every antenna obtaining after the preliminary treatment will send and every antenna to send carries out beam forming processing.

In method shown in Figure 1, when smart antenna carries out space division multiplexing, the usefulness of each dimension space is only used the antenna in the sub antenna group that is assigned to this space per family, sends valid data on the antenna in this sub antenna group, and the data on other antenna outside this sub antenna group are 0; The sub antenna group is made up of one or more antenna in the smart antenna, and the sub antenna group non-overlapping copies of each dimension space use, and the every single antenna in the smart antenna belongs to a sub-antenna sets at the most.Therefore,, in fact only can there be 1 dimension space user's valid data, for the valid data that all there is M dimension space user in every single antenna of prior art, greatly reduce operand, reduce the consumption of system for each single antenna.

In order to make the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below.

In the present embodiment by the upper strata when the user is carried out resource allocation, by the sub antenna group that an antenna condition parameter ant_status (0:K-1) indicates the active user to use, promptly the antenna condition parameter is indicated the antenna that the pairing sub antenna group in space, user place is comprised.For example, the antenna condition parameter ant_status of the nth user in the m-dimensional space ^{(m, n)}Can represent with K bit (bit), an antenna in the corresponding smart antenna of each bit, two kinds of different values of each bit represent respectively whether this user uses this antenna, if corresponding bit is that this antenna is used in 1 expression in the present embodiment, corresponding bit is that this antenna is not used in 0 expression.

For instance: establish smart antenna and be made up of 8 antennas, be respectively antenna 1～8, empty branch multiple is 3, and 3 dimension space users are promptly arranged; Be divided into three sub-antenna sets with 8, antenna 1,2 and 3 is the first sub antenna group, and antenna 4 and 5 is the second sub antenna group, and antenna 6,7 and 8 is the 3rd sub antenna group; User in the 1st dimension space uses the antenna in the first sub antenna group, and the user in the 2nd dimension space uses the antenna in the second sub antenna group, and the user in the 3rd dimension space uses the antenna in the 3rd sub antenna group; Then each user's antenna condition parameter can be represented with 8 bits, the antenna condition parameter of each user in the 1st dimension space is 11100000, the antenna condition parameter that the antenna condition parameter of each user in the 2nd dimension space is each user in 00011000, the 3 dimension space is 00000111.

Utilize antenna condition parameter ant_status ^{(m, n)}, m=1 ..., M, n=1 ..., N carries out preliminary treatment to the user data after the modulation, is specially according to the antenna condition parameter and obtains user's modulating data that every antenna will send; Wherein, every antenna user's modulating data that will send include only this antenna place sub antenna group the modulating data of the user in the corresponding space.

Preliminary treatment to modulating data is as follows:

$d\_\mathrm{burst}\_{\mathrm{new}}_p^{(k,n)}=\left\{\begin{array}{cc}d\_{\mathrm{burst}}_p^{(m=1,n)}& \mathrm{ifant}\_\mathrm{statu}{s}^{(m=1,n)}\left(k\right)=1;\\ {d\_\mathrm{burst}}_p^{(m=2,n)}& \mathrm{ifant}\_{\mathrm{status}}^{(m=2,n)}\left(k\right)=1;\\ ......& \\ {d\_\mathrm{burst}}_p^{(m=M,n)}& \mathrm{if}{\mathrm{ant}\_\mathrm{status}}^{(m=M,n)}\left(k\right)=1;\\ 0& \mathrm{else};\end{array}\right.$

Wherein, k=1 ..., K; N=1 ..., N, ant_status ^{(m=1, n)}(k)=1 k bit of the antenna condition parameter of the nth user in expression the 1st dimension space is 1, d_burst _p ^{(m=1, n)}The modulating data of representing the nth user in the 1st dimension space, by that analogy.

Utilize antenna condition parameter ant_status ^{(m, n)}, m=1 ..., M, n=1 ..., N carries out preliminary treatment to the wave beam forming coefficient, obtains the pairing wave beam forming coefficient of user's modulating data that every antenna will send.

It is as follows that the wave beam forming coefficient is carried out preliminary treatment:

${\mathrm{Tx}\_\mathrm{beamfor}\min g\_\mathrm{new}}^{(n,k)}=\left\{\begin{array}{cc}{\mathrm{Tx}\_\mathrm{beamfor}\min g}^{(m=1,n,k)}& \mathrm{ifant}\_{\mathrm{status}}^{(m=1,n)}\left(k\right)=1;\\ {\mathrm{Tx}\_\mathrm{beamfor}\min g}^{(m=2,n,k)}& \mathrm{ifant}\_s{\mathrm{tatus}}^{(m=2,n)}\left(k\right)=1;\\ ......& \\ {\mathrm{Tx}\_\mathrm{beamfor}\min g}^{(m=M,n,k)}& \mathrm{ifant}\_{\mathrm{status}}^{(m=M,n)}\left(k\right)=1;\\ 0& \mathrm{else};\end{array}\right.$

Wherein, k=1 ..., K; N=1 ..., N, ant_status ^{(m=1, n)}(k)=1 k bit of the antenna condition parameter of the nth user in expression the 1st dimension space is 1, Tx_beamfor min g ^{(m=1, n, k)}Represent the wave beam forming coefficient of nth user on antenna k in the 1st dimension space, by that analogy.

Through the total data that sends on the k root antenna after the above-mentioned preliminary treatment be:

${d\_\mathrm{ready}}_p^{\left(k\right)}=\underset{n=1}{\overset{N}{\mathrm{\Σ}}}d\_\mathrm{burst}\_{\mathrm{new}}_p^{(k,n)}\·\mathrm{Tx}\_\mathrm{beamfor}\min g\_{\mathrm{new}}^{(n,k)}---\left(2\right)$

After obtaining total data on the every antenna according to formula (2), carry out radio frequency processing, the data after the radio frequency processing are sent on the corresponding antenna.

Corresponding like this each sampled point, the data of K root antenna generate, and only need N * K multiplication process.Realized the far calculation amount of multiplication of M times of space division multiplexing is reduced to the operand that non-NULL divides common smart antenna application, and divided common smart antenna application multiplexing identical implementation structure with non-NULL.

Fig. 2 is the composition structure chart of a kind of intelligent antenna beam shaping device of the embodiment of the invention.The device used in smart antenna consists of K antennas composition, space division multiple of M; K and M and K are natural numbers greater than or equal to M; K antennas antenna is divided into M sub-group; and an aerial antenna belongs to a sub-group ; M antenna groups and sub-one correspondence between the M-dimensional space; M-dimensional space and modulation for each user after beamforming only the user data space where the sub antenna group corresponding to the transmit antenna situation; in Figure 2; the apparatus comprising: upper module 201 and the beam forming module 202; wherein

Upper layer module 201 is used to each user in the M dimension space to distribute an antenna condition parameter, and the antenna condition parameter is sent to wave beam forming module 202; The antenna that the pairing sub antenna group in antenna condition parameter indication space, user place is comprised;

Wave beam forming module 202 is used for according to the antenna condition parameter user's modulating data being carried out preliminary treatment, obtains user's modulating data that every antenna will send; Be used for the wave beam forming coefficient being carried out preliminary treatment, obtain the pairing wave beam forming coefficient of user's modulating data that every antenna will send according to the antenna condition parameter; The pairing wave beam forming coefficient of user's modulating data that is used to use user's modulating data that every antenna obtaining after the preliminary treatment will send and every antenna to send carries out beam forming processing.

Particularly, in described upper layer module 201, be used to each user in the M dimension space to distribute the antenna condition parameter of the Bit String of a K bit as this user; Wherein, the bit of the K in the described Bit String is corresponding one by one with K antenna, and two kinds of different values of each bit represent respectively whether this user uses this antenna.

Fig. 3 is the composition structure chart of the wave beam forming module 202 among Fig. 2.As shown in Figure 3, wave beam forming module 202 comprises: primary data cache module 301, antenna condition parameter cache module 302, forming coefficient cache module 303, data-modulated module 304, modulating data pretreatment module 305, forming coefficient pretreatment module 306 and figuration processing module 307; Wherein:

Primary data cache module 301 is used for all users' of buffer memory M dimension space initial data;

Antenna condition parameter cache module 302 is used for each user's of store M dimension space antenna condition parameter;

Forming coefficient cache module 303, each user who is used for the store M dimension space corresponding forming coefficient on each antenna;

Data-modulated module 304, be used for from the primary data cache module obtain the M dimension space all users initial data and carry out modulation treatment and obtain sending to modulating data pretreatment module 305 behind the modulating data;

Modulating data pretreatment module 305, be used for obtaining each user's of M dimension space antenna condition parameter from antenna condition parameter cache module 302, and according to the antenna condition parameter of being obtained with from the modulating data of data-modulated module 304, obtain user's modulating data that every antenna will send, send to figuration processing module 307; Wherein, every antenna user's modulating data that will send include only this antenna place sub antenna group the modulating data of the user in the corresponding space;

Forming coefficient pretreatment module 306, be used for obtaining the forming coefficient of each user correspondence on each antenna of M dimension space from forming coefficient cache module 303, obtain the antenna condition parameter of each user the M dimension space from antenna condition parameter cache module, according to forming coefficient of being obtained and antenna condition parameter, obtain the pairing wave beam forming coefficient of user's modulating data that every antenna will send, and send to figuration processing module 307;

Figuration processing module 307, be used for every antenna, the wave beam forming multiplication that each user's modulating data that this antenna will be sent is corresponding with it obtains the data behind the wave beam forming, obtains needing to pass through the total data of this antenna transmission after the data behind the resulting wave beam forming being sued for peace again.

As shown in Figure 3, wave beam forming module 202 further comprises: radio frequency processing module 308; Described figuration processing module 307 is further used for every antenna, need send to radio frequency processing module 308 by the total data of this antenna transmission; Radio frequency processing module 308 is used for the total data from the figuration processing module is sent to corresponding antenna.Here radio frequency processing module 308 mainly is that the total data signal is carried out sending to antenna after the high frequency debugging.

Above-mentioned beam form-endowing method and the device of the wave beam forming that non-NULL divides smart antenna in also can multiplexing the present invention.This situation is a special case of the foregoing description, and being the empty multiple that divides is 1 situation, is not repeating here.

By as seen above-mentioned, the present invention is this to be made up of K root antenna for smart antenna, empty branch multiple is M, K and M are natural number and the K situation more than or equal to M, with K root antenna partition is M sub-antenna sets, wherein each sub antenna group comprises more than one antenna, and an antenna only belongs to a sub-antenna sets, between M sub-antenna sets and M dimension space, set up one-to-one relationship, the technical scheme that the modulation of each user in the M dimension space and the data after the beam forming processing only send on the antenna in this pairing sub antenna group in space, user place, make and only need carry out beam forming processing one-dimensional space user's modulating data for every antenna, this all needs modulating data to M dimension space user to carry out beam forming processing with respect to prior art for every antenna to compare, significantly reduce amount of calculation, reduced cost.

The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.

Claims (6)

1. intelligent antenna beam shaping method, it is characterized in that, for smart antenna by K root antenna form, it is empty that to divide multiple be M, K and M are natural number and K more than or equal to M, K root antenna partition is a M sub-antenna sets, and an antenna only belongs to a sub-antenna sets, and is corresponding one by one between M sub-antenna sets and the M dimension space, the situation that each user's data in the M dimension space only sends on the antenna in this pairing sub antenna group in space, user place, this method comprises:

For each user in the M dimension space distributes an antenna condition parameter; The antenna that the pairing sub antenna group in antenna condition parameter indication space, user place is comprised;

According to the antenna condition parameter user's modulating data is carried out preliminary treatment, obtain user's modulating data that every antenna will send;

According to the antenna condition parameter wave beam forming coefficient is carried out preliminary treatment, obtain the pairing wave beam forming coefficient of user's modulating data that every antenna will send;

The pairing wave beam forming coefficient of user's modulating data that uses user's modulating data that every antenna obtaining after the preliminary treatment will send and every antenna to send carries out beam forming processing;

Wherein, describedly user's modulating data is carried out preliminary treatment, obtains user's modulating data that every antenna will send and comprise according to the antenna condition parameter: according to the antenna condition parameter obtain user's modulating data that every antenna will send include only this antenna place sub antenna group the modulating data of the user in the corresponding space;

The pairing wave beam forming coefficient of user's modulating data that user's modulating data that the every antenna that obtains after the described use preliminary treatment will send and every antenna will send carries out beam forming processing and comprises: for every antenna, the wave beam forming multiplication that each user's modulating data that this antenna will be sent is corresponding with it obtains the data behind the wave beam forming, obtains the total data by this antenna transmission after the data behind the resulting wave beam forming being sued for peace again.

2. method according to claim 1 is characterized in that, this method further comprises: for each antenna, obtain total data by this antenna transmission after, total data is carried out radio frequency processing, the data after the radio frequency processing are sent to this antenna.

3. method according to claim 1 is characterized in that, each user's antenna condition parameter is the Bit String of K bit; Wherein, the bit of the K in the described Bit String is corresponding one by one with K antenna, and two kinds of different values of each bit represent respectively whether this user uses this antenna.

4 A smart antenna beam forming device; wherein; the device used in smart antenna consists of K antennas composition, space division multiple of M; K and M and K are natural numbers greater than or equal to M; K antennas divided the M sub-antenna group;, and an antenna to a single sub antenna group; M antenna groups and sub-one correspondence between the M-dimensional space; M-dimensional space data for each user on the user where only the corresponding sub-space antenna groups transmitted on the antenna case; the apparatus comprising: upper module and the beam forming module; wherein

Upper layer module is used to each user in the M dimension space to distribute an antenna condition parameter, and the antenna condition parameter is sent to the wave beam forming module; The antenna that the pairing sub antenna group in antenna condition parameter indication space, user place is comprised;

The wave beam forming module is used for according to the antenna condition parameter user's modulating data being carried out preliminary treatment, obtains user's modulating data that every antenna will send; Be used for the wave beam forming coefficient being carried out preliminary treatment, obtain the pairing wave beam forming coefficient of user's modulating data that every antenna will send according to the antenna condition parameter; The pairing wave beam forming coefficient of user's modulating data that is used to use user's modulating data that every antenna obtaining after the preliminary treatment will send and every antenna to send carries out beam forming processing;

Wherein, described wave beam forming module comprises: primary data cache module, antenna condition parameter cache module, forming coefficient cache module, data-modulated module, modulating data pretreatment module, forming coefficient pretreatment module and figuration processing module; Wherein:

The primary data cache module is used for all users' of buffer memory M dimension space initial data;

Antenna condition parameter cache module is used for each user's of store M dimension space antenna condition parameter;

The forming coefficient cache module, each user who is used for the store M dimension space corresponding forming coefficient on each antenna;

The data-modulated module, be used for from the primary data cache module obtain the M dimension space all users initial data and carry out modulation treatment and obtain sending to the modulating data pretreatment module behind the modulating data;

The modulating data pretreatment module, be used for obtaining each user's of M dimension space antenna condition parameter from antenna condition parameter cache module, and according to the antenna condition parameter of being obtained with from the modulating data of data-modulated module, obtain user's modulating data that every antenna will send, send to the figuration processing module; Wherein, every antenna user's modulating data that will send include only this antenna place sub antenna group the modulating data of the user in the corresponding space;

The forming coefficient pretreatment module, be used for obtaining the forming coefficient of each user correspondence on each antenna of M dimension space from the forming coefficient cache module, obtain the antenna condition parameter of each user the M dimension space from antenna condition parameter cache module, according to forming coefficient of being obtained and antenna condition parameter, obtain the pairing wave beam forming coefficient of user's modulating data that every antenna will send, and send to the figuration processing module;

The figuration processing module, be used for every antenna, the wave beam forming multiplication that each user's modulating data that this antenna will be sent is corresponding with it obtains the data behind the wave beam forming, obtains needing to pass through the total data of this antenna transmission after the data behind the resulting wave beam forming being sued for peace again.

5. device according to claim 4 is characterized in that, described wave beam forming module further comprises: the radio frequency processing module;

Described figuration processing module is further used for every antenna, need send to the radio frequency processing module by the total data of this antenna transmission;

The radio frequency processing module is used for the total data from the figuration processing module is sent to corresponding antenna.

6. device according to claim 4 is characterized in that,

Described upper layer module is used to each user in the M dimension space to distribute the antenna condition parameter of the Bit String of a K bit as this user; Wherein, the bit of the K in the described Bit String is corresponding one by one with K antenna, and two kinds of different values of each bit represent respectively whether this user uses this antenna.

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