CN101483468A - Method and apparatus for transmitting data through polarized antenna - Google Patents
Method and apparatus for transmitting data through polarized antenna Download PDFInfo
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- CN101483468A CN101483468A CNA2008100557077A CN200810055707A CN101483468A CN 101483468 A CN101483468 A CN 101483468A CN A2008100557077 A CNA2008100557077 A CN A2008100557077A CN 200810055707 A CN200810055707 A CN 200810055707A CN 101483468 A CN101483468 A CN 101483468A
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Abstract
The present invention discloses a method for transmitting data through polarized antenna. The invention is used for realizing data transmission through a plurality of groups of polarized antennae for obtaining diversity gain. The method comprises the following steps: obtaining the data to be transmitted by the network side; executing spectrum expansion to the data to be transmitted by different groups of polarized antenna by the network side with different channelization codes according to the group number of polarized antennae, executing beamforming to the data to be transmitted through a group of polarized antennae, and transmitting the spectrum expanded data through the polarized antennae, wherein at least two groups of polarized antennae exist. The invention also discloses a device and a system which are used for realizing the method.
Description
Technical field
The present invention relates to the communications field, particularly relate to method and device by poliarizing antenna transmission data.
Background technology
Dual polarized antenna is a kind of new antenna technology, has made up+45 ° and-45 ° of two antennas that polarised direction is mutually orthogonal, is operated in simultaneously under the transmission duplex pattern, and each sub-district only needs one group of dual polarized antenna.Dual polarized antenna permission system adopts the polarization diversity reception technique, and its principle is the irrelevance of utilizing between ± 45 ° of polarised directions, and irrelevance degree has between the two determined the quality of diversity reception.Because ± 45 ° are orthogonal polarization, therefore can effectively guarantee diversity reception, its polarization diversity gain is about 5dB, than the about 2dB of space diversity raising of the common employing of single-polarized antenna.In addition, the space diversity reception effect of single-polarized antenna is relevant with the position of two secondary reception antennas, and it is best that antenna covers positive direction, weakens to both sides gradually, causes the actual coverage in sub-district to be dwindled.Adopt polarization diversity to replace space diversity reception to communicate, almost it doesn't matter for diversity gain and aerial position, the difference that covers principal direction and edge very little (this difference since the reflecting surface width cause ± 45 ° of quadrature deleterious cause), therefore can effectively improve the reception of edge, guarantee coverage.
The wave beam forming technology is widely used in mobile communication system, adopts the array antenna of wave beam forming technology to be commonly referred to as smart antenna.Smart antenna is aimed at desired user with main beam and is carried out receiving and transmitting signal by wave beam forming, has improved the received power of receiving terminal.Smart antenna also can by adjusting the weight coefficient of each antenna element, fall into zero of array antenna direction in the aligning interference user according to the space characteristics of interference signal, can reduce the signal power from interference user like this.At cell edge, because wave beam forming has improved the received power of receiving terminal, so the coverage of sub-district has obtained expansion.But change scene faster at wireless channel, can make the systematic function severe exacerbation.
To sum up, still not having many group poliarizing antennas at present provides the solution of service simultaneously for the user, and directly uses prior art, and then systematic function is undesirable.
Summary of the invention
The embodiment of the invention provides a kind of method and device by poliarizing antenna transmission data, is used for realizing obtaining diversity gain by many group poliarizing antenna transmission data.
A kind of method by poliarizing antenna transmission data may further comprise the steps:
Network side need to obtain the data of transmission;
Network side is according to the group number of poliarizing antenna, adopt different channel codes to need by not on the same group the data that send of poliarizing antenna carry out spread spectrum, to need carrying out wave beam forming by the data that one group of poliarizing antenna sends, and by the data behind the described poliarizing antenna transmission spread spectrum; Described poliarizing antenna is at least two groups.
A kind of method by poliarizing antenna transmission data may further comprise the steps:
End side connects with at least two group poliarizing antennas and receives data; In the described data, from the data of one group of poliarizing antenna through wave beam forming, from not on the same group the data of poliarizing antenna be to adopt different channel codes to carry out spread spectrum;
Described end side adopts different channel estimation windows that described data are detected and data merge.
A kind of network equipment comprises:
First interface module is used to obtain the data that needs send;
The wave beam forming module is used for carrying out wave beam forming by the data that one group of poliarizing antenna sends;
The channel code spread spectrum module is used for the group number according to poliarizing antenna, adopt different channel codes to need by not on the same group the data that send of poliarizing antenna carry out spread spectrum; Described poliarizing antenna is at least two groups;
Second interface module is used for respectively by the data behind the described two group poliarizing antennas transmission spread spectrum at least.
A kind of terminal side equipment comprises:
Interface module is used for connecting with at least two group poliarizing antennas and receiving data; In the described data, from the data of one group of poliarizing antenna through wave beam forming, from not on the same group the data of poliarizing antenna be to adopt different channel codes to carry out spread spectrum;
Detection module is used to adopt different channel estimation windows that described data are detected;
Merge module, be used for the data after receiving are merged.
A kind of system comprises:
Network equipment, be used to obtain the data that needs send, group number according to poliarizing antenna, adopt different channel codes to need by not on the same group the data that send of poliarizing antenna carry out spread spectrum, to need carrying out wave beam forming by the data that one group of poliarizing antenna sends, and by the data behind the described poliarizing antenna transmission spread spectrum; Described poliarizing antenna is at least two groups;
At least two terminal side equipments are respectively applied for and receive the data that one group of poliarizing antenna sends.
Another kind of system comprises:
Network equipment, be used to obtain the data that needs send, group number according to poliarizing antenna, adopt different channel codes to need by not on the same group the data that send of poliarizing antenna carry out spread spectrum, to need carrying out wave beam forming by the data that one group of poliarizing antenna sends, and by the data behind the described poliarizing antenna transmission spread spectrum; Described poliarizing antenna is at least two groups;
Terminal side equipment is used to receive the data that described at least two group poliarizing antennas send.
The mode of the embodiment of the invention by wave beam forming is combined with polarization diversity realized the transfer of data of many groups poliarizing antenna, and the drawback when having reduced single application of beam figuration and polarization diversity.
Description of drawings
Fig. 1 is the structure chart of network side apparatus in the embodiment of the invention;
Fig. 2 is the structure chart of a kind of system in the embodiment of the invention;
Fig. 3 is the structure chart of another kind of system in the embodiment of the invention;
Fig. 4 is the structure chart of terminal side equipment in the embodiment of the invention;
Fig. 5 is the method flow diagram that network side sends data in the embodiment of the invention by many group poliarizing antennas;
Fig. 6 is the method flow diagram that end side receives data in the embodiment of the invention by many group poliarizing antennas;
Fig. 7 is the detailed method flow chart when a plurality of users send data in the embodiment of the invention;
Fig. 8 is the schematic diagram of wave beam forming implementation procedure in the embodiment of the invention;
Fig. 9 is the detailed method flow chart when a user sends data in the embodiment of the invention.
Embodiment
The embodiment of the invention realizes that with wave beam forming and polarization diversity technique combination many group poliarizing antennas for to transmit data to the user, obtain diversity gain.
One group of poliarizing antenna in the embodiment of the invention comprises the antenna of at least one single polarization direction, organizes the polarised direction difference between the poliarizing antenna more.
Referring to Fig. 1, present embodiment provides a kind of network equipment, and it comprises first interface module 101, wave beam forming module 102, channel code spread spectrum module 103 and second interface module 104.This network equipment can be base station (Node B or Evolved Node B).
Wave beam forming module 102 is used for carrying out wave beam forming by the data that one group of poliarizing antenna sends.
Channel code spread spectrum module 103 is used for the group number according to poliarizing antenna, adopt different channel codes to need by not on the same group the data that send of poliarizing antenna carry out spread spectrum; Described poliarizing antenna is at least two groups.
Wave beam forming module 102 is fixing with channelizing spread spectrum module 103 contexts, can first interface module, 101 connecting channel spread spectrum module 103, connect wave beam forming module 102 again.
Network equipment also comprises power control module, is used to control the transmitting power of respectively organizing poliarizing antenna, and this figure is not shown.
Many groups poliarizing antenna on the network equipment can connect a plurality of terminal side equipments respectively, and perhaps many group poliarizing antennas all are connected to a plurality of terminal side equipments, and then system configuration is also different.
Referring to Fig. 2, the system when many group poliarizing antennas connect a plurality of terminal side equipment respectively in the present embodiment comprises network equipment and at least two terminal side equipments.
Network equipment, be used to obtain the data that needs send, group number according to poliarizing antenna, adopt different channel codes to need by not on the same group the data that send of poliarizing antenna carry out spread spectrum, to need carrying out wave beam forming by the data that one group of poliarizing antenna sends, and by the data behind the described poliarizing antenna transmission spread spectrum.
At least two terminal side equipments are respectively applied for and receive the data that one group of poliarizing antenna sends.
Referring to Fig. 3, the system when many group poliarizing antennas all are connected to a plurality of terminal side equipment in the present embodiment comprises network equipment and terminal side equipment.
Network equipment, be used to obtain the data that needs send, group number according to poliarizing antenna, adopt different channel codes to need by not on the same group the data that send of poliarizing antenna carry out spread spectrum, to need carrying out wave beam forming by the data that one group of poliarizing antenna sends, and by the data behind the described poliarizing antenna transmission spread spectrum.
Terminal side equipment is used to receive the data that described at least two group poliarizing antennas send.
Terminal side equipment then needs corresponding processing module owing to can connect many group poliarizing antennas.
Referring to Fig. 4, present embodiment provides a kind of terminal side equipment, and it comprises interface module 401, detection module 402 and merges module 403.
The implementation that detects and merge is unfixing, merges module 403 connection detection module 402 again so interface module 401 also can connect.
Be introduced below by the method for flow process many groups poliarizing antenna transmission data.
Referring to Fig. 5, the network side main method flow process of many group poliarizing antenna transmission data is as follows in the present embodiment:
Step 501: network side need to obtain the data of transmission.Can obtain data by receiving, thereby also can obtain by the generation of data.
Step 502: network side is according to the group number of poliarizing antenna, adopt different channel codes to need by not on the same group the data that send of poliarizing antenna carry out spread spectrum, described poliarizing antenna is at least two groups.Can organize in the poliarizing antenna more, the corresponding channel code of polarised direction, also can one group corresponding channel code of a polarised direction in the poliarizing antenna.
Step 503: network side is to carrying out wave beam forming by the data that one group of poliarizing antenna sends.
Step 504: network side sends data behind the spread spectrum by described poliarizing antenna.
Wherein, the execution sequence of step 502 and step 503 can exchange, and promptly carries out wave beam forming, carries out the spread spectrum operation again.
Referring to Fig. 6, the end side main method flow process of many group poliarizing antenna transmission data is as follows in the present embodiment:
Step 601: end side connects with at least two group poliarizing antennas and receives data; In the described data, from the data of one group of poliarizing antenna through wave beam forming, from not on the same group the data of poliarizing antenna be to adopt different channel codes to carry out spread spectrum.
Step 602: described end side adopts different channel estimation windows that described data are detected.
Step 603: described end side merges the data after receiving.
Wherein, the execution sequence of step 602 and step 603 can exchange.
Network side can once send data to a user by many groups poliarizing antenna, also can send data to a plurality of users; And, organize poliarizing antenna more and can send identical data and also can send different data when a user sends data.At different situations, choose the method that two exemplary embodiments are described many group poliarizing antenna transmission data in detail below.
Referring to Fig. 7, network side is as follows by the implementation procedure of many groups poliarizing antenna when a plurality of users send data:
Predesignating one group of poliarizing antenna and provide service for a user, is that example describes with two groups of poliarizing antennas.
Step 701: the different channel code of network side employing is respectively each user's data and carries out spread spectrum, the corresponding one group of poliarizing antenna of user.For example, the data 1 that network side adopts 1 pair of needs of channel code to send to user 1 are carried out spread spectrum, and the data 2 that adopt 2 pairs of needs of channel code to send to user 2 are carried out spread spectrum.Data 1 in terms of content can be identical with data 2.
Step 702: network side carries out wave beam forming to the signal on two groups of poliarizing antennas respectively.Need compute beam forming coefficient w, w calculates the method can adopt characteristic value wave beam forming method can also adopt the fixed beam figuration etc., establishes two groups of poliarizing antenna wave beam forming weight coefficient vectors and is respectively: w
1=[w
11, w
12..., w
1N]
HAnd w
2=[w
21, w
22..., w
2N]
HWith the signal multiplication of forming coefficient w and respective antenna transmission, finish wave beam forming.Promptly use w
1Multiply by the data 1 behind the spread spectrum, use w
2Multiply by the data 2 behind the spread spectrum.W wherein
1iThe wave beam forming weight coefficient of the i root antenna in the expression poliarizing antenna group 1, w
2iThe wave beam forming weight coefficient of the i root antenna in the expression poliarizing antenna group 2, referring to the schematic diagram of wave beam forming process shown in Figure 8, s (t) represents one road signal.
Step 703: network side distributes transmitting power for each group poliarizing antenna.It is multiple to distribute the mode of power to have, as divides equally, distributes (power that grade is high is strong) etc. according to user 1 and user's 2 the grade of service.Present embodiment distributes according to w, the corresponding higher power that w is bigger.
Step 704: network side sends the data to corresponding user by each group poliarizing antenna respectively according to the power that has distributed.Be that data 2 after network side will be handled by poliarizing antenna group 2 send to user 2, the data 1 after will handling by poliarizing antenna group 1 send to user 1.
Step 705: the user receives the data of self correspondence.
Network side sends data by many groups poliarizing antenna to a plurality of users, can improve throughput of system.
Referring to Fig. 9, network side is as follows by the implementation procedure of many groups poliarizing antenna when a user sends data:
The poliarizing antennas of group more than predesignating can be a user provides service, is that example describes with two groups of poliarizing antennas.
Step 901: each data that network side adopts different channel codes to be respectively the user are carried out spread spectrum.For example, network side adopts 1 pair of user's data of channel code 1 to carry out spread spectrum, adopts 2 pairs of user's data of channel code 2 to carry out spread spectrum.Data 1 can be the same or different in terms of content with data 2.When not simultaneously, data 1 and data 2 can be the data on the different subframes, also can be the data on the different code channels.
Step 902: network side carries out wave beam forming to the signal on two groups of poliarizing antennas respectively.
Step 903: network side distributes transmitting power for each group poliarizing antenna.Can distribute power according to the importance of data, higher as data retransmission importance, for it distributes higher power.
Step 904: network side sends the data to the user by each group poliarizing antenna respectively according to the power that has distributed.
Step 905: the user receives data from two groups of poliarizing antennas.
Step 906: the user constructs the sytem matrix of different polarization antenna sets, adopts different channel estimation windows that the data on each group poliarizing antenna are detected.The quantity of channel estimation window is identical with the group number (or quantity of channel code) of poliarizing antenna.The mode that detects has multiple, as the optimum linear joint-detection etc.
Step 907: the user merges the data that detect output.The mode that merges has multiple, as high specific merging or selection merging etc.High specific merges and to be meant: the data of each group poliarizing antenna correspondence be multiply by addition after the predetermined weights.Select to merge and be meant:, only select the data of one group of poliarizing antenna correspondence at a frame or a code channel etc.The setting of weight or the foundation of selection can be the size of w, the power of power etc.This step can obtain merging diversity gain.
Wherein, step 906 and 907 execution sequence can exchange, and promptly at first sytem matrix are merged, and reduce the size of sytem matrix, and can obtain diversity gain and the gain that interweaves, and carry out Data Detection again, make the complexity of Data Detection be reduced.
Be used to realize that the software of the embodiment of the invention can be stored in storage mediums such as floppy disk, hard disk, CD and flash memory.
The mode of the embodiment of the invention by wave beam forming is combined with polarization diversity realized the transfer of data of many groups poliarizing antenna, and the drawback when having reduced single application of beam figuration and polarization diversity.If many group poliarizing antennas transmit data to a plurality of users, can improve throughput of system; If many group poliarizing antennas transmit data to a user, can obtain diversity gain and the gain that interweaves.And, because the embodiment of the invention has realized the transfer of data of many groups poliarizing antenna, guaranteed isolation between the antenna satisfy intermodulation to isolation between antennas require (〉=30dB), space interval between many group poliarizing antennas only needs 20～30cm, therefore iron tower can be built in the mobile base station, the iron prop that only needs a diameter 20cm of frame is fixed on dual polarized antenna on the iron prop by corresponding coverage direction and gets final product.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (12)
1, a kind of method by poliarizing antenna transmission data is characterized in that, may further comprise the steps:
Network side need to obtain the data of transmission;
Network side is according to the group number of poliarizing antenna, adopt different channel codes to need by not on the same group the data that send of poliarizing antenna carry out spread spectrum, to need carrying out wave beam forming by the data that one group of poliarizing antenna sends, and by the data behind the described poliarizing antenna transmission spread spectrum; Described poliarizing antenna is at least two groups.
2, the method for claim 1 is characterized in that, sends identical or different data by described at least two group poliarizing antennas.
3, method as claimed in claim 2 is characterized in that, described different data are the data of different user; Perhaps, described different data are same user's different pieces of information.
4, method as claimed in claim 3 is characterized in that, described same user's different pieces of information is different sub-frame datas; Perhaps, described same user's different pieces of information is the data on the different code channels.
5, the method for claim 1 is characterized in that, when described data were same user's data, described user adopted different channel estimation windows that the data that receive are detected and data merge.
6, the method for claim 1 is characterized in that, described at least two group poliarizing antennas adopt the data after constant power or unequal power send spread spectrum.
7, method as claimed in claim 6 is characterized in that, when with the data behind the unequal power transmission spread spectrum, distributes the mode of power to comprise:
When poliarizing antenna adopts wave beam forming in the group, distribute power according to the size of shape-endowing weight value; Perhaps
When described data are the data of different user, distribute power according to user's the grade of service.
8, a kind of method by poliarizing antenna transmission data is characterized in that, may further comprise the steps:
End side connects with at least two group poliarizing antennas and receives data; In the described data, from the data of one group of poliarizing antenna through wave beam forming, from not on the same group the data of poliarizing antenna be to adopt different channel codes to carry out spread spectrum;
Described end side adopts different channel estimation windows that described data are detected and data merge.
9, a kind of network equipment is characterized in that, comprising:
First interface module is used to obtain the data that needs send;
The wave beam forming module is used for carrying out wave beam forming by the data that one group of poliarizing antenna sends;
The channel code spread spectrum module is used for the group number according to poliarizing antenna, adopt different channel codes to need by not on the same group the data that send of poliarizing antenna carry out spread spectrum; Described poliarizing antenna is at least two groups;
Second interface module is used for respectively by the data behind the described two group poliarizing antennas transmission spread spectrum at least.
10, a kind of terminal side equipment is characterized in that, comprising:
Interface module is used for connecting with at least two group poliarizing antennas and receiving data; In the described data, from the data of one group of poliarizing antenna through wave beam forming, from not on the same group the data of poliarizing antenna be to adopt different channel codes to carry out spread spectrum;
Detection module is used to adopt different channel estimation windows that described data are detected;
Merge module, be used for the data after receiving are merged.
11, a kind of system is characterized in that, comprising:
Network equipment, be used to obtain the data that needs send, group number according to poliarizing antenna, adopt different channel codes to need by not on the same group the data that send of poliarizing antenna carry out spread spectrum, to need carrying out wave beam forming by the data that one group of poliarizing antenna sends, and by the data behind the described poliarizing antenna transmission spread spectrum; Described poliarizing antenna is at least two groups;
At least two terminal side equipments are respectively applied for and receive the data that one group of poliarizing antenna sends.
12, a kind of system is characterized in that, comprising:
Network equipment, be used to obtain the data that needs send, group number according to poliarizing antenna, adopt different channel codes to need by not on the same group the data that send of poliarizing antenna carry out spread spectrum, to need carrying out wave beam forming by the data that one group of poliarizing antenna sends, and by the data behind the described poliarizing antenna transmission spread spectrum; Described poliarizing antenna is at least two groups;
Terminal side equipment is used to receive the data that described at least two group poliarizing antennas send.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100557077A CN101483468A (en) | 2008-01-07 | 2008-01-07 | Method and apparatus for transmitting data through polarized antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100557077A CN101483468A (en) | 2008-01-07 | 2008-01-07 | Method and apparatus for transmitting data through polarized antenna |
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| CNA2008100557077A Pending CN101483468A (en) | 2008-01-07 | 2008-01-07 | Method and apparatus for transmitting data through polarized antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101848024A (en) * | 2010-03-25 | 2010-09-29 | 新邮通信设备有限公司 | Method and device for shaping wave beam of intelligent antenna |
| CN102315873A (en) * | 2011-09-07 | 2012-01-11 | 北京北方烽火科技有限公司 | Cross polarization antenna system reception merging method and apparatus thereof |
-
2008
- 2008-01-07 CN CNA2008100557077A patent/CN101483468A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101848024A (en) * | 2010-03-25 | 2010-09-29 | 新邮通信设备有限公司 | Method and device for shaping wave beam of intelligent antenna |
| CN101848024B (en) * | 2010-03-25 | 2013-07-31 | 新邮通信设备有限公司 | Method and device for shaping wave beam of intelligent antenna |
| CN102315873A (en) * | 2011-09-07 | 2012-01-11 | 北京北方烽火科技有限公司 | Cross polarization antenna system reception merging method and apparatus thereof |
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