CN103024946B - A kind of method of multi-antenna wireless base station system and the system transmission data - Google Patents
A kind of method of multi-antenna wireless base station system and the system transmission data Download PDFInfo
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Abstract
This application discloses a kind of multi-antenna wireless base station system and the method for system transmission data, including：M base station, each base station are used to handle data to be sent, generate time domain baseband signals, and wherein M is the integer more than or equal to 1；N number of radio frequency unit, at least K roots antenna is provided with each radio frequency unit, wherein K is the integer more than or equal to 1, and wherein N is the integer more than or equal to 1, and N and M are integer that is identical or differing；Base band data crosspoint, M base station and N number of radio frequency unit are respectively coupled to the base band data crosspoint；Wherein, base band data crosspoint, for according to the mapping relations between one or more radio frequency units in one or more base stations in M base station and N number of radio frequency unit, the H roads time domain baseband signals Zhong Mei roads time domain baseband signals of one or more base stations generation in M base station send to N to the antenna multiplied in K root antennas, wherein H is the integer for multiplying K more than 0 but less than N.
Description
Technical field
The application is related to field of wireless communication, more particularly to a kind of multi-antenna wireless base station system and system transmission number
According to method.
Background technology
With developing rapidly for the communications industry, wireless communication system has become indispensable during we live one
Point, research and concern of the people to it are also more and more.Traditional wireless communication system is using a secondary transmitting antenna and one
Secondary reception antenna, referred to as single-input single-output (SISO) system.What single-input single-output system can not break through in channel capacity with one
The limitation of bottleneck -- Shannon capacity.
New generation of wireless communication system all uses multi-antenna technology substantially, and for multiple antennas, people have carried out many researchs,
MIMO (Multiple-Input Multiple-Out-put, Multiple Input Multiple Output) is included to the research contents of multi-antenna technology
With two fields of Beamforming (general signal processing technology).
Spatial Dimension is combined with antenna diversity, i.e. smart antenna thought, it essentially consist in by optimal weighting merge and
Maximize signal to noise ratio, make signal malfunction probability exponentially reduce with the antenna element number independently to decline, and power system capacity with
Antenna element number increases in logarithm.However, switch beam array, which is only suitable to signal angle, extends less communication environments, and certainly
Larger multipath propagation environment is extended though adapting to array and can be used for signal angle, it is relatively abundanter in the multipath component of high intensity
In the environment of, the anti-fading ability of AAS is fairly limited, because intelligent antenna technology does not utilize multipath
Propagate.
For the multipath fading and link stability in mobile communication, there has been proposed diversity antenna technology, and by antenna
Diversity and time diversity use in conjunction, moreover it is possible to the diversity benefit of Spatial Dimension and time dimension is obtained, due to increasing array element spacing
All be advantageous to capture with separating multipath with angle spread and combination space time processing, therefore combine antenna transmitting diversity with receiving diversity
Technology, make full use of rather than suppress multipath transmisstion, further develop spatial domain resource, improve radio transmission performance, become nothing
The inexorable trend of line Communication Development, so from smart antenna to the evolution of MIMO technology, also just turn into multi-antenna technology development
Inexorable trend.
Present inventor at least has found that prior art is present during the technical scheme in realizing the embodiment of the present application
Following technical problem：
Because current multiaerial system is substantially fixed configurations, or such as BTS hardware system is 4 antenna systems,
It is 2 antenna systems；So 4 antenna systems are converted into from 2 antenna systems in the prior art, due to software
It is different with hardware, then need to the whole base station system including BBU (baseband processing unit), RRU (radio frequency unit) etc.
Hardware replacement is carried out, this largely limits the adaptability of multiaerial system.
The content of the invention
A kind of method that the embodiment of the present application provides multi-antenna wireless base station system and system transmission data, to solve
The problem of multiaerial system adaptability difference of the prior art.
In order to solve the above problems, the adaptability of multiaerial system is improved, the embodiment of the present application one provides a kind of more days
Line wireless base system, including：
M base station, each base station be used for data to be sent are handled, generate time domain baseband signals, wherein M be more than
Or the integer equal to 1；
N number of radio frequency unit, at least K roots antenna being provided with each radio frequency unit, wherein K is the integer more than or equal to 1,
Wherein N is the integer more than or equal to 1, and the N and the M are integer that is identical or differing；
Base band data crosspoint, the M base station and N number of radio frequency unit are respectively coupled to the base band data
Crosspoint；
Wherein, base band data crosspoint, for according in one or more base stations in M base station and N number of radio frequency unit
Mapping relations between one or more radio frequency units, by the H roads time domain baseband signals of one or more base station generations in M base station
Zhong Mei roads time domain baseband signals send to the N antenna multiplied in the K roots antenna, and wherein H is more than 0 but is less than institute
State the integer that N multiplies the K.
Further, said system also includes：
Mapping relations administrative unit, it is connected with base band data crosspoint, for managing and storing M in table form
Mapping relations between base station and N number of radio frequency unit.
Wherein, according between one or more radio frequency units in one or more base stations in M base station and N number of radio frequency unit
Mapping relations change because changing associating between base station and radio frequency unit, specific as follows：
(1) L base station produces J roads time domain baseband signals in the M base station, and the J is more than the L and K
Product but during product less than or equal to the N and K, wherein L is integer less than the M, the mapping relations tool
Body is：
Mapping relations between the L base station and T radio frequency unit, wherein the T and K product is equal to the J,
The T is the integer more than L and less than or equal to N.
(2) J roads time domain baseband signals are produced in the M base station, and during products of the J equal to the N and K,
The mapping relations are specially：
Mapping relations between the M base station and N number of radio frequency unit.
(3) L base station produces J roads time domain baseband signals in the M base station, and the J is less than the N and K
Product when, the mapping relations are specially：
Mapping relations between the L base station and the S radio frequency unit, wherein S are less than or equal to N but more than L's
Integer.
The embodiment of the present application two provides a kind of method of multi-antenna wireless base station system transmission data, and the system includes M
Individual base station, wherein M are the integer more than or equal to 1；N number of radio frequency unit, at least K roots antenna is provided with each radio frequency unit,
Wherein K is the integer more than or equal to 1, and wherein N is the integer more than or equal to 1, and the N and the M are identical or differed
Integer, methods described specifically includes：
Generate H roads time domain baseband signals, wherein H is the integer for multiplying the K more than 0 but less than the N；
According to the mapping between one or more radio frequency units in one or more base stations in M base station and N number of radio frequency unit
Relation, the H roads time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to the N and multiplied in the K roots antenna
An antenna.
Wherein, according between one or more radio frequency units in one or more base stations in M base station and N number of radio frequency unit
Mapping relations change because changing associating between base station and radio frequency unit, specific as follows：
1st, L base station produces J roads time domain baseband signals in the M base station, and the J is more than the L's and K
When product but product less than or equal to the N and K, wherein L is integer less than the M, and the mapping relations are specific
For：
Mapping relations between the L base station and T radio frequency unit, wherein the T and K product is equal to the J,
The T is the integer more than L and less than or equal to N.
2nd, it is described by the H in mapping relations of the mapping relations between the L base station and T radio frequency unit
Road time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to the N and multiply an antenna in the K roots antenna, tool
Body includes：
By H1Road time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to one in the T radio frequency unit
Or on more antennas；
By H2Road time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent in the T radio frequency unit in addition
One or in addition on more antennas, wherein H1With H2Sum is H.
3rd, it is described by the H in mapping relations of the mapping relations between the L base station and T radio frequency unit
Road time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to the N and multiply an antenna in the K roots antenna, tool
Body includes：
By H1Road time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to T in the T radio frequency unit1It is individual to penetrate
On an antenna in frequency unit；
By H2Road time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to T in the T radio frequency unit2It is individual to penetrate
On an antenna in frequency unit, wherein H1With H2Sum is H.
J roads time domain baseband signals are produced in the M base station, and during products of the J equal to the N and K, it is described
Mapping relations are specially：
Mapping relations between the M base station and N number of radio frequency unit.
4th, it is described by institute in mapping relations of the mapping relations between the M base station and N number of radio frequency unit
State H roads time domain baseband signals Zhong Mei roads time domain baseband signals and send to the N antenna multiplied in the K roots antenna, have
Body is：
H roads time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to generating the road time domain baseband signals
On an antenna corresponding to base station on radio frequency unit.
L base station produces J roads time domain baseband signals, and the J multiplying less than the N and K in the M base station
During product, the mapping relations are specially：
Mapping relations between the L base station and the S radio frequency unit, wherein S are less than or equal to N but more than L's
Integer.
In mapping relations of the mapping relations between the L base station and the S radio frequency unit, it is described will described in
H roads time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to the N and multiply an antenna in the K roots antenna,
Specially：
The H roads time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to the S and multiply the K roots antenna
In an antenna.
One embodiment or multiple embodiments in the embodiment of the present application, have advantages below or beneficial effect it
One：
1st, it need not change or change hardware, it becomes possible to flexibly according to different needs, pass through different configurations, group
The multi-antenna base station system needed is synthesized, improves the adaptability of multi-antenna base station system；
2nd, distribution multi-antenna base station system can easily be realized；
3rd, due to not possessing relevance between the antenna of the multiaerial system of the present invention, therefore can have when signal transmits
Effect is utilized space resources, and obtains bigger gain.
Brief description of the drawings
Fig. 1 is the first embodiment structure chart of multi-antenna base station system in embodiment one；
Fig. 2 is the second embodiment structure chart of multi-antenna base station system in embodiment one；
Fig. 3 is the first embodiment flow chart of the method that multi-antenna base station system transmits data in embodiment two；
Fig. 4 be embodiment two in the antenna system of second embodiment 4 transmit data method between base station and radio frequency unit
Baseband signal allocation list；
Fig. 5 is that the antenna system of second embodiment 4 configures block diagram in embodiment two；
Base between base station and radio frequency unit in the method for the antenna system of 3rd embodiment 4 transmission data in Fig. 6 embodiments two
Band signal allocation list；
Fig. 7 is that 4 antenna systems configure block diagram in 3rd embodiment in embodiment two；
Fig. 8 be embodiment two in the antenna system of fourth embodiment 2 transmit data method between base station and radio frequency unit
Baseband signal configures block diagram；
Fig. 9 is base station and radio frequency unit in the method for the antenna diversity system of the 5th embodiment 4 transmission data in embodiment two
Between baseband signal allocation list.
Embodiment
A kind of method that the embodiment of the present application provides multi-antenna wireless base station system and system transmission data, to solve
The problem of multiaerial system adaptability difference of the prior art, and then can more effectively utilize space resources, passed in signal
Bigger gain is obtained when defeated.
Data are transmitted to the multi-antenna wireless base station system and the system with reference to embodiment and Figure of description
Method is described in detail.
As shown in figure 1, in order to solve the above problems, the adaptability of multiaerial system is improved, the embodiment of the present application one carries
For a kind of multi-antenna wireless base station system, including：
M base station 10, each base station are used to handle data to be sent, generate time domain baseband signals, wherein M is big
In or equal to 1 integer；
N number of radio frequency unit 11, at least K roots antenna is provided with each radio frequency unit, and wherein K is whole more than or equal to 1
Number, wherein N are the integer more than or equal to 1, and the N and the M are integer that is identical or differing；Assuming that M=N=4, below
The M and N of appearance value are all 4.
Base band data crosspoint 12, the M base station and N number of radio frequency unit are respectively coupled to the base band number
According to crosspoint；
Wherein, base band data crosspoint 12, for according to one or more base stations in M base station 10 and N number of radio frequency list
Mapping relations in member 11 between one or more radio frequency units, by the H roads time domain of one or more base station generations in M base station 10
Baseband signal Zhong Mei roads time domain baseband signals send to the N antenna multiplied in the K roots antenna, and wherein H is more than 0
But less than the integer that the N multiplies the K.
As shown in Fig. 2 further, said system also includes：
Mapping relations administrative unit 13, it is connected with base band data crosspoint 12, for managing and depositing in table form
Store up the mapping relations between M base station 10 and N number of radio frequency unit 11.
Wherein, (1) L base station in the M base station 10 produces J roads time domain baseband signals, and the J is more than the L
During product with the product of the K but less than or equal to the N and K, wherein L is the integer less than the M, the mapping
Relation is specially：
Mapping relations between the L base station and T radio frequency unit, wherein the T and K product is equal to the J,
The T is the integer more than L and less than or equal to N.
(2) J roads time domain baseband signals are produced in the M base station, and during products of the J equal to the N and K,
The mapping relations are specially：
Mapping relations between the M base station and N number of radio frequency unit.
(3) L base station produces J roads time domain baseband signals in the M base station, and the J is less than the N and K
Product when, the mapping relations are specially：
Mapping relations between the L base station and the S radio frequency unit, wherein S are less than or equal to N but more than L's
Integer.
As shown in figure 3, the first embodiment of the embodiment of the present application two provides a kind of multi-antenna wireless base station system transmission data
Method, the system includes M base station, and wherein M is the integer more than or equal to 1；N number of radio frequency unit, each radio frequency unit
On be provided with least K roots antenna, wherein K is the integer more than or equal to 1, and wherein N is the integer more than or equal to 1, the N and
The M is integer that is identical or differing, and methods described specifically includes：
Step 201, H roads time domain baseband signals are generated, wherein H is the integer for multiplying the K more than 0 but less than the N；
Step 202, according to one or more radio frequency units in one or more base stations in M base station and N number of radio frequency unit
Between mapping relations, H roads time domain baseband signals Zhong Mei roads time domain baseband signals are sent to the N and multiplied in the K roots antenna
An antenna.
Wherein, the method that second embodiment provides in the embodiment of the present application two, wherein, the L base station in the M base station
Produce J roads time domain baseband signals, and products of the J more than the L and K but multiplying less than or equal to the N and K
During product, wherein L is the integer less than the M, and the mapping relations are specially：
Mapping relations between the L base station and T radio frequency unit, wherein the T and K product is equal to the J,
The T is the integer more than L and less than or equal to N.
, will in mapping relations of the mapping relations between the L base station and T radio frequency unit for step 202
H roads time domain baseband signals Zhong Mei roads time domain baseband signals send to the N antenna multiplied in the K roots antenna, specifically
Including：
By H1Road time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to one in the T radio frequency unit
Or on more antennas；
By H2Road time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent in the T radio frequency unit in addition
One or in addition on more antennas, wherein H1With H2Sum is H.
Assuming that L=2, T=4, H=8, K=2, J=8, wherein meeting, the T and K product is equal to the J, institute
It is the integer more than L and less than or equal to N to state T.
As shown in figure 4, manage table for L base station and the mapping relations of T radio frequency unit, it is assumed that H1=H2=4, by H1 roads
Time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to first of each radio frequency unit in the T radio frequency unit
On root antenna, it is specially：
The time domain baseband signals id1-1 of base station 1 (Bbu1) is sent to Rru1 first antenna；That is Rru1 base band id1-
1；
The time domain baseband signals id1-2 of base station 1 (Bbu1) is sent to Rru2 first antenna；That is Rru2 base band id2-
1；
The time domain baseband signals id1-3 of base station 1 (Bbu1) is sent to Rru3 first antenna；That is Rru3 base band id3-
1；
The time domain baseband signals id1-4 of base station 1 (Bbu1) is sent to Rru4 first antenna；That is Rru4 base band id4-
1；
H2 roads time domain baseband signals Zhong Mei roads time domain baseband signals are sent to each radio frequency in the T radio frequency unit
On second antenna of unit, it is specially：
The time domain baseband signals id2-1 of base station 2 (Bbu2) is sent to Rru1 second antenna；That is Rru1 base band id1-
2；
The time domain baseband signals id2-2 of base station 2 (Bbu2) is sent to Rru2 second antenna；That is Rru2 base band id2-
2；
The time domain baseband signals id2-3 of base station 2 (Bbu2) is sent to Rru3 second antenna；That is Rru3 base band id3-
2；
The time domain baseband signals id2-4 of base station 2 (Bbu2) is sent to Rru4 second antenna；That is Rru4 base band id4-
2。
As shown in figure 5, if 2 antennas of each radio frequency unit are arranged on different frequencies, second embodiment carries
The method of confession is actually the data transmission method of an antenna system of 2 frequency 4；Epc is core network in its Fig. 5, per road day
Line is unrelated, naturally it is also possible to which 2 antennas are arranged on identical frequency.
The method that 3rd embodiment provides in the embodiment of the present application two, it is assumed that L=2, T=4, H=8, K=2, J=8, institute
The product for stating the T and K is equal to the J, and the T is the integer more than L and less than or equal to N.
, will in mapping relations of the mapping relations between the L base station and T radio frequency unit for step 202
H roads time domain baseband signals Zhong Mei roads time domain baseband signals send to the N antenna multiplied in the K roots antenna, specifically
Including：
By H1Road time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to T in the T radio frequency unit1It is individual to penetrate
On an antenna in frequency unit；
By H2Road time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to T in the T radio frequency unit2It is individual to penetrate
On an antenna in frequency unit, wherein H1With H2Sum is H.
As shown in fig. 6, manage table for L base station and the mapping relations of T radio frequency unit, it is assumed that H1=H2=4, T1=T2
=2, then, by H1Road time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to T in the T radio frequency unit1It is individual to penetrate
On an antenna in frequency unit, it is specially：
The time domain baseband signals id1-1 of base station 1 (Bbu1) is sent to Rru1 first antenna；That is Rru1 base band id1-
1；
The time domain baseband signals id1-2 of base station 1 (Bbu1) is sent to Rru1 second antenna；That is Rru1 base band id1-
2；
The time domain baseband signals id1-3 of base station 1 (Bbu1) is sent to Rru2 first antenna；That is Rru2 base band id2-
1；
The time domain baseband signals id1-4 of base station 1 (Bbu1) is sent to Rru2 second antenna；That is Rru2 base band id2-
2；
By H2Road time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to T in the T radio frequency unit2It is individual to penetrate
On an antenna in frequency unit, it is specially：
The time domain baseband signals id2-1 of base station 2 (Bbu2) is sent to Rru3 first antenna；That is Rru3 base band id3-
1；
The time domain baseband signals id2-2 of base station 2 (Bbu2) is sent to Rru3 second antenna；That is Rru3 base band id3-
2；
The time domain baseband signals id2-3 of base station 2 (Bbu2) is sent to Rru4 first antenna；That is Rru4 base band id4-
1；
The time domain baseband signals id2-4 of base station 2 (Bbu2) is sent to Rru4 second antenna；That is Rru4 base band id4-
2；
As shown in fig. 7, if 2 antennas of each radio frequency unit are arranged on identical frequency, 3rd embodiment carries
The method of confession is actually the data transmission method of an antenna system of single-frequency point 4；In its Fig. 7, epc is core network, per road
Antenna is unrelated, naturally it is also possible to 2 antennas is arranged on identical frequency, i.e., composition one is different from first embodiment
The data transmission method of the antenna system () of 2 frequency 4 of configuration mode.
The method that fourth embodiment provides in the embodiment of the present application two, wherein, J roads time domain base is produced in the M base station
Band signal, and during products of the J equal to the N and K, the mapping relations are specially：
Mapping relations between the M base station and N number of radio frequency unit.
In mapping relations of the mapping relations between the M base station and N number of radio frequency unit, by H roads time domain
Baseband signal Zhong Mei roads time domain baseband signals are respectively sent to the N and multiply an antenna in the K roots antenna, are specially：
H roads time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to generating the road time domain baseband signals
On an antenna corresponding to base station on radio frequency unit.
As shown in figure 8, be 2 antenna systems, where it is assumed that J=8, K=2, H=8, M=N=4, wherein, meet institute
State the product that J is equal to the N and K；
The time domain baseband signals id1-1 of base station 1 (Bbu1) is sent to Rru1 first antenna；That is Rru1 base band id1-
1；
The time domain baseband signals id1-2 of base station 1 (Bbu1) is sent to Rru1 second antenna；That is Rru1 base band id1-
2；
The time domain baseband signals id2-1 of base station 2 (Bbu2) is sent to Rru2 first antenna；That is Rru2 base band id2-
1；
The time domain baseband signals id2-2 of base station 2 (Bbu2) is sent to Rru2 second antenna；That is Rru2 base band id2-
2；
The time domain baseband signals id3-1 of base station 3 (Bbu3) is sent to Rru3 first antenna；That is Rru3 base band id3-
1；
The time domain baseband signals id3-2 of base station 3 (Bbu3) is sent to Rru3 second antenna；That is Rru3 base band id3-
2；
The time domain baseband signals id4-1 of base station 4 (Bbu4) is sent to Rru4 first antenna；That is Rru4 base band id4-
1；
The time domain baseband signals id4-2 of base station 4 (Bbu4) is sent to Rru4 second antenna；That is Rru4 base band id4-
2；Wherein, unrelated per road antenna, the method that the 3rd embodiment provides is actually the transmission side of 2 antenna systems
Method, need 2 antennas can also to be arranged on identical or different frequency according to actual conditions.
The method that the embodiment of the embodiment of the present application 2 the 5th provides, wherein, L base station produces J roads in the M base station
Time domain baseband signals, and during products of the J less than the N and K, the mapping relations are specially：
Mapping relations between the L base station and the S radio frequency unit, wherein S are less than or equal to N but more than L's
Integer.
Now, for step 202, in mapping of the mapping relations between the L base station and the S radio frequency unit
During relation, H roads time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to the N and multiplied in the K roots antenna
A piece antenna, it is specially：
The H roads time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to the S and multiply the K roots antenna
In an antenna.
Assuming that L=3, J=9, K=3, S=4, wherein, meet S for the integer less than or equal to N but more than L, and L base
J roads time domain baseband signals caused by standing, and the J is less than the N and K product.Now, by 8 road time domain baseband signals
Zhong Mei roads time domain baseband signals are respectively sent to the S and multiply the K, i.e. an antenna in 12 antennas, it is clear that now during 9 tunnel
Domain baseband signal only needs No. 9 antenna cans to complete data transfer, cannots be used up No. 12 antennas, so, now, according to reality
Border situation needs, and can lead to the replica signal of the especially important time domain baseband signals in a few roads in 9 road time domain baseband signals
Remaining 3 tunnel antenna transmission is crossed to go out；It is wherein unrelated per road antenna, its space resources is made full use of, expands gain.
As shown in figure 9, manage table for L base station and the mapping relations of S radio frequency unit, it is assumed that L=1, J=4, K=2, S
=4, will be in J roads time domain baseband signals caused by L base station be respectively sent to per time domain baseband signals all the way the S multiply it is described
An antenna in K root antennas, it is specially：
The time domain baseband signals id1-1 of base station 1 (Bbu1) is sent to Rru1 first antenna；That is Rru1 base band id1-1；
The time domain baseband signals id1-2 of base station 1 (Bbu1) is sent to Rru1 the second antenna；That is Rru1 base band id1-2；
The time domain baseband signals id1-3 of base station 1 (Bbu1) is sent to Rru2 first antenna；That is Rru2 base band id2-1；
The time domain baseband signals id1-4 of base station 1 (Bbu1) is sent to Rru2 the second antenna；That is Rru2 base band id2-2；
The replica signal of 4 road time domain baseband signals of base station 1 is sent to unnecessary antenna, it is specific as follows：
The time domain baseband signals id1-1 of base station 1 (Bbu1) is sent to Rru3 first antenna；That is Rru3 base band id3-1；
The time domain baseband signals id1-2 of base station 1 (Bbu1) is sent to Rru3 the second antenna；That is Rru3 base band id3-2；
The time domain baseband signals id1-3 of base station 1 (Bbu1) is sent to Rru4 first antenna；That is Rru4 base band id4-1；
The time domain baseband signals id1-4 of base station 1 (Bbu1) is sent to Rru4 the second antenna；That is Rru4 base band id4-2.
Wherein, method unrelated per road antenna, that the fourth embodiment provides, actually a 4 antenna diversity systems transmission number
According to method, it is of course also possible to according to actual conditions needs, No. 2 antennas are arranged on identical or different frequency.
In actual application, using the method and system of the embodiment of the present application offer, it is not limited in embodiment
2 antenna systems and 4 antenna systems enumerated, according to actual conditions, can be combined into the multiaerial system of needs, just differ herein
One lists.
One embodiment or multiple embodiments in the embodiment of the present application, have advantages below or beneficial effect it
One：
1st, it need not change or change hardware, it becomes possible to flexibly according to different needs, pass through different configurations, group
The multi-antenna base station system needed is synthesized, improves the adaptability of multi-antenna base station system；
2nd, distribution multi-antenna base station system can easily be realized；
3rd, due to not possessing relevance between the antenna of the multiaerial system of the present invention, therefore can have when signal transmits
Effect is utilized space resources, and obtains bigger gain.
Method designed by the present invention, it can be realized using any computer language, and for software and hardware without spy
It is different to require.Although having been described for the preferred embodiment of the application, those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into having altered and changing for the application scope.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (12)
- A kind of 1. multi-antenna wireless base station system, it is characterised in that including：M base station, each base station are used to handle data to be sent, generate time domain baseband signals, and wherein M is to be more than or wait In 1 integer；N number of radio frequency unit, at least K roots antenna being provided with each radio frequency unit, wherein K is the integer more than or equal to 1, wherein N is the integer more than or equal to 1, and the N and the M are integer that is identical or differing；Base band data crosspoint, the M base station and N number of radio frequency unit are respectively coupled to the base band data and exchanged Unit；Wherein, the base band data crosspoint, for N number of being penetrated with described according to one or more base stations in the M base station Mapping relations in frequency unit between one or more radio frequency units, by the H roads of one or more base station generations in the M base station Time domain baseband signals Zhong Mei roads time domain baseband signals send to the N antenna multiplied in the K roots antenna, and wherein H is Multiply the integer of the K more than 0 but less than the N；Wherein, the system also includes：Mapping relations administrative unit, it is connected with the base band data crosspoint, for table The format management of lattice simultaneously stores the mapping relations between the M base station and N number of radio frequency unit.
- 2. the system as claimed in claim 1, it is characterised in that L base station produces J roads time-domain baseband in the M base station Signal, and when products of the J more than the L and K but the product less than or equal to the N and K, wherein L is small In the integer of the M, the mapping relations are specially：Mapping relations between the L base station and T radio frequency unit, wherein the T and K product is equal to the J, it is described T is the integer more than L and less than or equal to N.
- 3. the system as claimed in claim 1, it is characterised in that J roads time domain baseband signals, and institute are produced in the M base station When stating products of the J equal to the N and K, the mapping relations are specially：Mapping relations between the M base station and N number of radio frequency unit.
- 4. the system as claimed in claim 1, it is characterised in that L base station produces J roads time-domain baseband in the M base station Signal, and during products of the J less than the N and K, the mapping relations are specially：Mapping relations in the L base station and N number of radio frequency unit between S radio frequency unit, wherein S are less than or equal to N But the integer more than L.
- 5. a kind of method of multi-antenna wireless base station system transmission data, the system includes M base station, wherein M be more than or Integer equal to 1；N number of radio frequency unit, at least K roots antenna is provided with each radio frequency unit, and wherein K is more than or equal to 1 Integer, wherein N are the integer more than or equal to 1, and the N and the M are integer that is identical or differing, it is characterised in that institute The method of stating specifically includes：Generate H roads time domain baseband signals, wherein H is the integer for multiplying the K more than 0 but less than the N；According between one or more radio frequency units in one or more base stations in the M base station and N number of radio frequency unit Mapping relations, the H roads time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to the N and multiply the K roots day An antenna in line；Wherein, manage in table form and store the mapping relations between the M base station and N number of radio frequency unit.
- 6. method as claimed in claim 5, it is characterised in that L base station produces J roads time-domain baseband in the M base station Signal, and when products of the J more than the L and K but the product less than or equal to the N and K, wherein L is small In the integer of the M, the mapping relations are specially：Mapping relations between the L base station and T radio frequency unit, wherein the T and K product is equal to the J, it is described T is the integer more than L and less than or equal to N.
- 7. method as claimed in claim 6, it is characterised in that in the mapping relations be the L base station and T radio frequency list It is described that the H roads time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to the N during mapping relations between member Multiply an antenna in the K roots antenna, specifically include：By H1Road time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to one or more in the T radio frequency unit On root antenna；By H2Road time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to other one in the T radio frequency unit Or in addition on more antennas, wherein H1With H2Sum is H.
- 8. method as claimed in claim 6, it is characterised in that in the mapping relations be the L base station and T radio frequency list During mapping relations between member, described send the H roads time domain baseband signals Zhong Mei roads time domain baseband signals to the N multiplies institute An antenna in K root antennas is stated, is specifically included：By H1Road time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to T in the T radio frequency unit1Individual radio frequency list On an antenna in member；By H2Road time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to T in the T radio frequency unit2Individual radio frequency list On an antenna in member, wherein H1With H2Sum is H.
- 9. method as claimed in claim 5, it is characterised in that J roads time domain baseband signals, and institute are produced in the M base station When stating products of the J equal to the N and K, the mapping relations are specially：Mapping relations between the M base station and N number of radio frequency unit.
- 10. method as claimed in claim 8, it is characterised in that the mapping relations be the M base station with it is described N number of It is described to send the H roads time domain baseband signals Zhong Mei roads time domain baseband signals respectively during mapping relations between radio frequency unit Multiply an antenna in the K roots antenna to the N, be specially：H roads time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent to the base station with generating the road time domain baseband signals On an antenna on corresponding radio frequency unit.
- 11. method as claimed in claim 5, it is characterised in that L base station produces J roads time-domain baseband in the M base station Signal, and during products of the J less than the N and K, the mapping relations are specially：Mapping relations in the L base station and N number of radio frequency unit between S radio frequency unit, wherein S are less than or equal to N But the integer more than L.
- 12. method as claimed in claim 11, it is characterised in that individual with the S for the L base station in the mapping relations It is described to send the H roads time domain baseband signals Zhong Mei roads time domain baseband signals respectively during mapping relations between radio frequency unit Multiply an antenna in the K roots antenna to the N, be specially：The H roads time domain baseband signals Zhong Mei roads time domain baseband signals are respectively sent into the S to multiply in the K roots antenna A piece antenna.
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| CN101047420A (en) * | 2006-06-20 | 2007-10-03 | 华为技术有限公司 | Base station system and system and method for implementing downlink/uplink data branch/merge |
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