CN103378890A - Mapping method of array antenna port and array antenna port - Google Patents
Mapping method of array antenna port and array antenna port Download PDFInfo
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- CN103378890A CN103378890A CN2012101232539A CN201210123253A CN103378890A CN 103378890 A CN103378890 A CN 103378890A CN 2012101232539 A CN2012101232539 A CN 2012101232539A CN 201210123253 A CN201210123253 A CN 201210123253A CN 103378890 A CN103378890 A CN 103378890A
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- 238000013507 mapping Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000012545 processing Methods 0.000 claims abstract description 25
- 230000007774 longterm Effects 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 5
- 230000010287 polarization Effects 0.000 abstract description 4
- 230000003362 replicative effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
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Abstract
The invention provides a mapping method of an array antenna port and the array antenna port. The mapping method of the array antenna port comprises the following steps: A, replicating first port data and second port data on which pre-coding is conducted, wherein the first port data and the second port data are replicated into N-way data respectively, and N is an integer greater than or equal to 3; B, assigning the N-way data of a first port to corresponding antennas which are paired at intervals in the same polarization direction in a first mapping antenna set, and assigning the N-way data of a second port to corresponding antennas which are paired at intervals in the other same polarization direction in a second mapping antenna set; C, multiplying the data assigned on the antennas in the step B by the same coefficient, then sending the data to corresponding data processing channels of the antennas, and transmitting the data through the corresponding antennas. Compared with a broadcasting weight port mapping method, the mapping method of the array antenna port has the advantages of not losing effective transmitting power and being even in covering.
Description
Technical field
The present invention relates to Long Term Evolution (Long Term Evolution, LTE) and the version LTE (Advanced that evolves, LTE-A) descending multiple-input and multiple-output lift-off technology in the wireless communication system, be particularly related in a kind of time division duplex (Time Division Duplex, TDD)-LTE system the downlink physical port signal to many physical antennas mapping techniques.
Background technology
At third generation partner program (The 3rd Generation Partnership Project, 3GPP) chapter 6 down link (6.Downlink) in the LTE physical layer protocol TS36.211 agreement, in the down physical channel processing procedure, downlink data is through layer mapping (Layer mapper), precoding (Precoding), after the physical resource mapping (Resource element mapper), frequency domain data stream is take physical port number (port) as dimension, because antenna system is various in the practical application, how to be mapped to the not constraint of physical antenna of different numbers and type in the agreement for the physical port data.
For TDDLTE, common configuration is 2 physical ports at present, 8 physical antennas.Usually use broadcast weight value to carry out port mapping.Broadcast beam is defined as intelligent antenna array is applied the antenna pattern that specific amplitude and phase excitation formed omnidirectional covering or sector cover.The purpose of broadcast weight value is to adjust amplitude and the phase place of each array element (antenna element) signal in the array, makes the composite signal of each array element emission satisfy certain amplitude in all angles, thus the covering of Formation and characteristics shape.On a kind of array antenna, different amplitudes and phase value can obtain different angles and cover; By adjusting broadcast weight value, it is 30 °, 65 °, 90 ° broadcasting directional diagram that smart antenna can synthesize the 3dB width.
For example, application number is " a kind of OFDM multi-antenna mapping method and the device " of the yellow sunshine invention of 201010261173.0 Huawei Tech Co., Ltd, and application number is " a kind of method for generating broadcast weight value and the device " of the invention such as 200910077662.8 the Cai Yue people of Datang Mobile Communication Apparatus Co., Ltd, introduced respectively not peer broadcast weights and traditional broadcast weights mapping scheme.
But, said method is 65 ° unit 8 dual-polarized array greater than 0.5 times of wavelength, 3dB width for array element distance, during the two-port configuration, stable 3dB width of very difficult formation is 65 ° broadcast weight value, so for this antenna form, need to design the port mapping that suitable satisfied covering requires.
Summary of the invention
In order to address the above problem, the invention provides a kind of port mapping method and this array antenna port of array antenna, compare broadcast weight value port mapping mode and have and do not lose ERP, cover uniform advantage.
Port mapping method of the present invention comprises the following steps:
A, to copying respectively through the first port data and the second port data after the precoding processing, wherein, the first port data and the second port data respectively are copied into the N circuit-switched data; Wherein, N is the integer more than or equal to 3;
B, the N circuit-switched data of the first port is assigned in the first mapping antenna sets of same polarised direction interval pairing on the corresponding antenna; The N circuit-switched data of the second port is assigned in the second mapping antenna sets of same polarised direction interval pairing on the corresponding antenna;
C, the data that are assigned on each antenna among the step B be multiply by identical coefficient, then deliver to data processing channel corresponding to each antenna, and launch by respective antenna.
Wherein, in described step B, the pairing of same polarised direction interval refers to, in ading up to the antenna of 2N, be 1 to N with the antenna number of the first polarised direction, be N+1 to 2N with the antenna number of the second polarised direction, and the antenna of the first polarised direction is divided into odd number group and even number set, the antenna of the second polarised direction is divided into odd number group and even number set; The odd number group of the first polarised direction antenna and the even number set of the second polarised direction antenna are composed of the first mapping antenna sets; The even number set of the first polarised direction antenna and the odd number group of the second polarised direction antenna are composed of the second mapping antenna sets.
The port of array antenna of the present invention, comprise the first port and the second port, described the first port, will be to becoming the N circuit-switched data through the first port data Replica after the precoding processing, be assigned in the first mapping antenna sets of same polarised direction interval pairing on the corresponding antenna, the data that are assigned on each antenna multiply by identical coefficient, are sent to data processing channel corresponding to each antenna, launch by respective antenna; Wherein, N is the integer more than or equal to 3; Described the second port, will be to being copied into the N circuit-switched data through the second port data after the precoding processing, be assigned in the second mapping antenna sets of another same polarised direction interval pairing on the corresponding antenna, the data that are assigned on each antenna multiply by identical coefficient, be sent to data processing channel corresponding to each antenna, launch by respective antenna.
The invention has the beneficial effects as follows: according to port mapping method and this array antenna port of array antenna of the present invention, can solve the two-port data at antenna distance greater than 0.5 wavelength, the requirement that the unit 8 dual-polarized array that unit horizontal 3dB beamwidth is narrower etc. cover is compared broadcast weight value port mapping mode and is had and do not lose ERP, cover uniform advantage.
Description of drawings
Fig. 1 is the unit 8 double polarization array antenna schematic diagram of the use of the embodiment of the invention;
Fig. 2 is the schematic diagram that port and the physical antenna of the embodiment of the invention shines upon mutually.
Embodiment
Below, 1～2 port mapping method and this array antenna port of describing array antenna of the present invention in detail with reference to the accompanying drawings.
The port mapping method of array antenna of the present invention comprises the following steps:
100, to copying respectively through the first port data and the second port data after the precoding processing, wherein, the first port data and the second port data respectively are copied into the N circuit-switched data; Wherein, N is the integer more than or equal to 3;
Wherein, port is the many physical ports of down channel in LTE or the LTE-A wireless communication system.
Wherein, precoding processing is to obtain according to downlink processing in the 3GPPTS36.211 agreement.
200, the N circuit-switched data of described the first port is assigned in the first mapping antenna sets of same polarised direction interval pairing on the corresponding antenna; The N circuit-switched data of described the second port is assigned in the second mapping antenna sets of another same polarised direction interval pairing on the corresponding antenna;
Wherein, the pairing of same polarised direction interval refers to, in ading up to the antenna of 2N, be 1 to N with the antenna number of the first polarised direction, be N+1 to 2N with the antenna number of the second polarised direction, and the antenna of the first polarised direction is divided into odd number group and even number set, the antenna of the second polarised direction is divided into odd number group and even number set; The odd number group of the first polarised direction antenna and the even number set of the second polarised direction antenna are composed of the first mapping antenna sets; The even number set of the first polarised direction antenna and the odd number group of the second polarised direction antenna are composed of the second mapping antenna sets.
300, the data that are assigned on each antenna in the step 200 be multiply by identical coefficient, then deliver to data processing channel corresponding to each antenna, and launch by respective antenna.
Above-mentioned the first port data is that 3GPPTS36.211 agreement middle port 0, the second port data is 3GPP TS36.211 agreement middle port 1; Perhaps the first port data is that 3GPPTS36.211 agreement middle port 1, the second port data is 3GPPTS36.211 agreement middle port 0.
Array antenna port of the present invention comprises the first port and the second port.
Wherein, the first port, will be to becoming the N circuit-switched data through the first port data Replica after the precoding processing, be assigned in the first mapping antenna sets of same polarised direction interval pairing on the corresponding antenna, the data that are assigned on each antenna multiply by identical coefficient, be sent to data processing channel corresponding to each antenna, launch by respective antenna; Wherein, N is the integer more than or equal to 3.The second port, will be to being copied into the N circuit-switched data through the second port data after the precoding processing, be assigned in the second mapping antenna sets of another same polarised direction interval pairing on the corresponding antenna, the data that are assigned on each antenna multiply by identical coefficient, be sent to data processing channel corresponding to each antenna, launch by respective antenna.
The pairing of same polarised direction interval refers to, in ading up to the antenna of 2N, be 1 to N with the antenna number of the first polarised direction, be N+1 to 2N with the antenna number of the second polarised direction, and the antenna of the first polarised direction is divided into odd number group and even number set, the antenna of the second polarised direction is divided into odd number group and even number set; The odd number group of the first polarised direction antenna and the even number set of the second polarised direction antenna are composed of the first mapping antenna sets; The even number set of the first polarised direction antenna and the odd number group of the second polarised direction antenna are composed of the second mapping antenna sets.
Port of the present invention is the many physical ports of down channel in Long Term Evolution LTE or the version Long Term Evolution LTE-A wireless communication system of evolving.
Embodiment
Fig. 1 is the unit 8 double polarization array antenna schematic diagram of the embodiment of the invention.Antenna form according to Fig. 1 is numbered antenna, and number order as shown in Figure 1.Four antenna numbers of a kind of polarised direction are 1,2,3,4; Four antenna numbers of another kind of polarised direction are 5,6,7,8.
Particularly, be emitted as example take TDD-LTE Physical Downlink Shared Channel (Physical Downlink Shared Channel, PDSCH) two-port transmission mode as the business of TM3, method of the present invention may further comprise the steps:
Step 100 ': to carrying out respectively data Replica through the port 0 of precoding processing and PDSCHTM3 double-current signal S1 and the S2 of port one, respectively copy four the tunnel, obtain respectively [S1 S1 S1 S1]
T, [S2 S2 S2 S2]
T, wherein []
TBe matrix transpose operation.
The reproducing signals that step 200 ': with step 100 ' obtains is mapped with the physical antenna numbering respectively, with four circuit-switched data [S1 S1 S1 S1] of port 0
TCorresponding with four antennas that are numbered 1,3,6,8; Four circuit-switched data [S2 S2 S2 S2 with port one
TCorresponding with four antennas that are numbered 2,4,5,7, obtain: [S1
1S1
3S1
6S1
8]
T[S2
2S2
4S2
5S2
7]
T
Step 300 ': with step 200 ' obtains [S1
1S1
3S1
6S1
8]
T[S2
2S2
4S2
5S2
7]
TAll multiply by predetermined coefficient, for example 1, so S1
1=S1
3=S1
6=S1
8=S
1, S2
2=S2
4=S2
5=S2
7=S2 makes up by antenna and obtains: S=[S1 S2 S1 S2 S2 S1 S2 S1]
T, S is sent to data corresponding to each physical antenna by respective antenna process path, finally launch by respective antenna.
In sum, port mapping method and this array antenna port according to array antenna of the present invention, can solve the two-port data at antenna distance greater than 0.5 wavelength, the requirement that the unit 8 dual-polarized array that unit horizontal 3dB beamwidth is narrower etc. cover is compared broadcast weight value port mapping mode and is had and do not lose ERP, cover uniform advantage.
More than be in order to make those of ordinary skills understand the present invention; and the detailed description that the present invention is carried out; but can expect; within not breaking away from the scope that claim of the present invention contains, can also make other changes and modifications, these variations and revising all in protection scope of the present invention.
Claims (10)
1. the port mapping method of an array antenna is characterized in that, comprises the following steps:
A, to copying respectively through the first port data and the second port data after the precoding processing, wherein, the first port data and the second port data respectively are copied into the N circuit-switched data; Wherein, N is the integer more than or equal to 3;
B, the N circuit-switched data of the first port is assigned in the first mapping antenna sets of same polarised direction interval pairing on the corresponding antenna; The N circuit-switched data of the second port is assigned in the second mapping antenna sets of another same polarised direction interval pairing on the corresponding antenna;
C, the data that are assigned on each antenna among the step B be multiply by identical coefficient, then deliver to data processing channel corresponding to each antenna, and launch by respective antenna.
2. the method for claim 1, it is characterized in that, in described step B, the pairing of same polarised direction interval refers to, in ading up to the antenna of 2N, be 1 to N with the antenna number of the first polarised direction, be N+1 to 2N with the antenna number of the second polarised direction, and the antenna of the first polarised direction is divided into odd number group and even number set, the antenna of the second polarised direction is divided into odd number group and even number set; The odd number group of the first polarised direction antenna and the even number set of the second polarised direction antenna are composed of the first mapping antenna sets; The even number set of the first polarised direction antenna and the odd number group of the second polarised direction antenna are composed of the second mapping antenna sets.
3. method as claimed in claim 1 or 2 is characterized in that, described the first port and the second port are the many physical ports of down channel in Long Term Evolution LTE or the version Long Term Evolution LTE-A wireless communication system of evolving.
4. method as claimed in claim 3 is characterized in that, described precoding processing is to carry out downlink processing according to third generation partner program 3GPPTS36.211 agreement to obtain.
5. method as claimed in claim 3 is characterized in that, described the first port is 3GPPTS36.211 agreement middle port 0, and described the second port is 3GPPTS36.211 agreement middle port 1.
6. method as claimed in claim 3 is characterized in that, described the first port is 3GPPTS36.211 agreement middle port 1, and described the second port is 3GPPTS36.211 agreement middle port 0.
7. an array antenna port is characterized in that, comprises the first port and the second port,
Described the first port, will be to becoming the N circuit-switched data through the first port data Replica after the precoding processing, be assigned in the first mapping antenna sets of same polarised direction interval pairing on the corresponding antenna, the data that are assigned on each antenna multiply by identical coefficient, be sent to data processing channel corresponding to each antenna, launch by respective antenna; Wherein, N is the integer more than or equal to 3;
Described the second port, will be to being copied into the N circuit-switched data through the second port data after the precoding processing, be assigned in the second mapping antenna sets of another same polarised direction interval pairing on the corresponding antenna, the data that are assigned on each antenna multiply by identical coefficient, be sent to data processing channel corresponding to each antenna, launch by respective antenna.
8. array antenna port as claimed in claim 7, it is characterized in that, the pairing of same polarised direction interval refers to, in ading up to the antenna of 2N, be 1 to N with the antenna number of the first polarised direction, be N+1 to 2N with the antenna number of the second polarised direction, and the antenna of the first polarised direction is divided into odd number group and even number set, the antenna of the second polarised direction is divided into odd number group and even number set; The odd number group of the first polarised direction antenna and the even number set of the second polarised direction antenna are composed of the first mapping antenna sets; The even number set of the first polarised direction antenna and the odd number group of the second polarised direction antenna are composed of the second mapping antenna sets.
9. such as claim 7 or 8 described array antenna ports, it is characterized in that described the first port and the second port are the many physical ports of down channel in Long Term Evolution LTE or the version Long Term Evolution LTE-A wireless communication system of evolving.
10. the port of array antenna as claimed in claim 9 is characterized in that, described the first port is 3GPPTS36.211 agreement middle port 0, and described the second port is 3GPPTS36.211 agreement middle port 1; Perhaps, described the first port is 3GPPTS36.211 agreement middle port 1, and described the second port is 3GPP TS36.211 agreement middle port 0.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015176200A1 (en) * | 2014-05-19 | 2015-11-26 | 华为技术有限公司 | Communication device and communication method |
| CN105227223A (en) * | 2015-08-31 | 2016-01-06 | 上海华为技术有限公司 | A kind of signaling method for multiple antennas and device |
| WO2018112920A1 (en) * | 2016-12-23 | 2018-06-28 | 华为技术有限公司 | Signal transmission method and base station |
| WO2018219328A1 (en) * | 2017-05-31 | 2018-12-06 | 华为技术有限公司 | Antenna port mapping method and network device |
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| CN101061606A (en) * | 2004-11-18 | 2007-10-24 | 艾格瑞系统有限公司 | Antenna arrangement for multi-input multi-output wireless local area network |
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| CN1282468A (en) * | 1997-10-20 | 2001-01-31 | 艾利森公司 | A transmitter that selectively polarizes radio wave |
| CN101061606A (en) * | 2004-11-18 | 2007-10-24 | 艾格瑞系统有限公司 | Antenna arrangement for multi-input multi-output wireless local area network |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2015176200A1 (en) * | 2014-05-19 | 2015-11-26 | 华为技术有限公司 | Communication device and communication method |
| CN105227223A (en) * | 2015-08-31 | 2016-01-06 | 上海华为技术有限公司 | A kind of signaling method for multiple antennas and device |
| CN105227223B (en) * | 2015-08-31 | 2019-01-11 | 上海华为技术有限公司 | A kind of signaling method and device for multiple antennas |
| WO2018112920A1 (en) * | 2016-12-23 | 2018-06-28 | 华为技术有限公司 | Signal transmission method and base station |
| US10944507B2 (en) | 2016-12-23 | 2021-03-09 | Huawei Technologies Co., Ltd. | Signal transmission method and base station |
| WO2018219328A1 (en) * | 2017-05-31 | 2018-12-06 | 华为技术有限公司 | Antenna port mapping method and network device |
| CN108988913A (en) * | 2017-05-31 | 2018-12-11 | 华为技术有限公司 | A kind of antenna terminal mapping method and the network equipment |
| CN108988913B (en) * | 2017-05-31 | 2019-10-25 | 华为技术有限公司 | A kind of antenna terminal mapping method and the network equipment |
| US11109261B2 (en) | 2017-05-31 | 2021-08-31 | Huawei Technologies Co., Ltd. | Antenna port mapping method and network device |
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