WO2017166200A1 - Data transmission method and device - Google Patents

Data transmission method and device Download PDF

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Publication number
WO2017166200A1
WO2017166200A1 PCT/CN2016/078108 CN2016078108W WO2017166200A1 WO 2017166200 A1 WO2017166200 A1 WO 2017166200A1 CN 2016078108 W CN2016078108 W CN 2016078108W WO 2017166200 A1 WO2017166200 A1 WO 2017166200A1
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WO
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Prior art keywords
matrix
precoding matrix
data
base station
transmission
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PCT/CN2016/078108
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French (fr)
Chinese (zh)
Inventor
金帆
汪利标
覃名富
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华为技术有限公司
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Priority to PCT/CN2016/078108 priority Critical patent/WO2017166200A1/en
Priority to CN201680082985.4A priority patent/CN108886200A/en
Publication of WO2017166200A1 publication Critical patent/WO2017166200A1/en

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/24Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a data transmission method and apparatus.
  • MIMO Multiple Input Multiple Output
  • the rate gain of the traditional single-user MIMO technology depends not only on the number of antennas of the transmitter, but also There are also certain requirements on the number of antennas of the receiver. Since the receiver is limited by its size, it is usually not possible to equip too many antennas, and the gain of single-user MIMO technology is also limited by the wireless channel. When the transmit/receive channel correlation is strong, a higher space division cannot be obtained. Use the gain.
  • multi-user MIMO technology is more applicable.
  • multi-user MIMO technology how to reduce interference between multiple users is a key issue.
  • TDD Time Division Duplex
  • the transmitting end uses the reciprocity of the uplink and downlink channels to acquire downlink channel information, and constructs mutually orthogonal beams to reduce inter-user interference.
  • FDD Frequency Division Duplex
  • the embodiments of the present invention provide a data transmission method and apparatus, which are used to solve the problem that the base station side obtains accurate downlink channel information in the prior art, and the multi-user interference problem is difficult to avoid, which affects the performance of the multi-purpose MIMO.
  • a data transmission method including:
  • the base station selects M user equipment UEs in the cell, at least one of the M UEs is in a beam coverage range with a first downtilt angle, and at least one of the M UEs is in the a beam coverage having a second downtilt angle, wherein the beam having the first downtilt angle belongs to a beam of a first polarization direction of the active antenna system AAS, and the beam having the second downtilt angle belongs to the AAS a beam in a bipolar direction, the number of beams having a first downtilt angle and the number of beams having a second downtilt angle are at least two, and M is a positive integer greater than or equal to 2, and the base station passes the AAS covers the cell;
  • the base station performs data transmission with the M UEs on the same time-frequency resource according to different precoding matrices through the beams corresponding to the M UEs.
  • Another data transmission method including:
  • the base station selects a plurality of user equipment UEs in the cell, where the multiple UEs include a first UE, a second UE, a third UE, and a fourth UE, where the first UE is in a first beam coverage range, The second UE is in the second beam coverage, the third UE is in the third beam coverage, and the fourth UE is in the fourth beam coverage; the first beam and the second beam belong to a beam of the first polarization direction of the active antenna system AAS, the third beam and the fourth beam belong to a beam of the second polarization direction of the AAS; the beam of the first polarization direction has a first downtilt angle The second polarization direction beam has a second downtilt angle, wherein the base station covers the cell by using the AAS;
  • the base station performs data transmission with the first UE by using the first beam, and performs data transmission with the second UE by using the second beam on the same time-frequency resource, and the third beam is used to The third UE performs data transmission, and performs data transmission with the fourth UE by using the fourth beam.
  • a computer readable storage medium wherein executable program code is stored, the program code being used to implement the method of the first aspect or the second aspect.
  • a data transmission apparatus comprising means for performing the method of the first aspect or the second aspect.
  • a base station comprising the apparatus provided by the fourth aspect.
  • a base station including: a transceiver, a processor, and a memory, wherein: the processor reads a program in the memory, performing the first aspect or the second aspect Methods.
  • data of different UEs may be vertically separated by using different precoding.
  • the matrix pre-codes the data of different UEs, so that the data of different UEs can be isolated in the horizontal direction. Since the data of different UEs are effectively isolated in the horizontal and vertical directions, the data transmission is reduced during the user. interference.
  • FIG. 1 is a schematic flowchart of a data transmission method according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic flowchart of a data transmission method according to Embodiment 2 of the present invention.
  • FIG. 3 is a schematic structural diagram of an antenna array of the base station according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of four narrow beams formed in an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of an optional mapping relationship between four narrow beams formed in an embodiment of the present invention and a dual-polarized antenna in an AAS;
  • FIG. 6 is a schematic flowchart diagram of a data transmission method according to Embodiment 3 of the present invention.
  • FIG. 7 is a schematic diagram of a data transmission apparatus according to Embodiment 4 of the present invention.
  • FIG. 8 is a schematic diagram of a base station according to Embodiment 4 of the present invention.
  • the narrow beams formed in the embodiments of the present invention have a certain degree of spatial isolation.
  • the narrow beams of different terminals can be isolated in the vertical direction by setting different downtilt angles for the antennas in different polarization directions.
  • the narrow beams of different terminals can be isolated in the horizontal direction. Since the narrow beams formed in the embodiment of the present invention have a certain spatial isolation degree, the interference between users can be reduced in the multi-user multiple input multiple output (Multi-user MIMO, MU-MIMO), thereby improving the MU- MIMO performance.
  • Multi-user MIMO Multi-user MIMO
  • MU-MIMO multi-user multiple input multiple output
  • an Active Antenna System is used.
  • AAS is a new type of RF device in wireless communication. It can be defined as the integration of antenna and radio. It can be regarded as the integration of Remote Radio Unit (RRU) and antenna at the physical site. The function of the RRU unit is combined with the function of the antenna. Due to the characteristics of AAS integration, the RF multi-channel technology can be used to control the vertical array of antennas and the array of horizontal arrays, and the antennas in the vertical and horizontal directions can be flexibly controlled to improve the coverage of wireless signals. Quality improves the purpose of network capacity.
  • a data transmission method As shown in FIG. 1, the method includes:
  • the base station selects M user equipment UEs in the cell, where at least one of the M UEs is in a beam coverage range with a first downtilt angle, and at least one UE of the M UEs is in a second downtilt angle.
  • the beam having the first downtilt angle belongs to a beam of a first polarization direction of the active antenna system AAS
  • the beam having the second downtilt angle belongs to a beam of the second polarization direction of the AAS
  • the number of the beam having the first downtilt angle and the beam having the second downtilt angle are at least two
  • M is a positive integer greater than or equal to 2
  • the base station covers the cell by using the AAS.
  • first downtilt angle is greater than or less than the second downtilt angle.
  • the base station performs data transmission with the M UEs by using the beams corresponding to the M UEs according to different precoding matrices on the same time-frequency resource.
  • the data of different UEs can be isolated in the vertical direction, and different precoding matrices are used for different UEs.
  • the data is pre-coded to realize the isolation of data of different UEs in the horizontal direction. Since the data of different UEs are effectively isolated in the horizontal and vertical directions, the interference between users is reduced during data transmission.
  • the following describes the data transmission method provided by the embodiment of the present invention in detail by taking four narrow beams formed by the AAS as an example.
  • the first beam and the second beam belong to a beam in a first polarization direction of the AAS, and the third beam and the fourth beam belong to a beam in a second polarization direction of the AAS;
  • the beam in the direction has a first downtilt angle, and the beam in the second polarization direction has a second downtilt angle.
  • the base station selects multiple user equipments in the cell, where the multiple UEs include the first UE, the second UE, the third UE, and the fourth UE.
  • the first UE is in the first beam coverage area.
  • the second UE is in the second beam coverage, the third UE is in the third beam coverage, and the fourth UE is in the fourth beam coverage, and the base station covers the Community
  • the base station performs data transmission with the first UE by using the first beam, and performs data transmission with the second UE by using the second beam, by using the third beam.
  • the beam performs data transmission with the third UE, and performs data transmission with the fourth UE by using the fourth beam.
  • the first beam and the second beam belong to a beam of a first polarization direction of the AAS
  • the third beam and the fourth beam belong to a beam of the second polarization direction of the AAS
  • the narrow beam has different polarization directions.
  • the data of the first UE, the second UE, the third UE, and the fourth UE are isolated in the vertical direction according to different downtilt angles; on the same time-frequency resource, the first is obtained by using different precoding matrices respectively.
  • the data of the UE, the second UE, the third UE, and the fourth UE are pre-coded, and the data of the first UE, the second UE, the third UE, and the fourth UE are isolated in the horizontal direction, because the first UE The data of the second UE, the third UE, and the fourth UE are effectively isolated in both the horizontal and vertical directions, thereby reducing interference between users during data transmission.
  • a possible implementation manner is: the base station determines whether to enable MU-MIMO transmission on the same time-frequency resource according to the cell load condition in the cell, as follows:
  • the base station performs selection of the multiple UEs when determining that the cell load exceeds a load threshold.
  • the base station starts multiple UEs when determining that the cell load exceeds a load threshold.
  • MU-MIMO transmission on the same time-frequency resource, thereby making full use of time-frequency resources and reducing cell load. If the cell load does not exceed the load threshold, the UE may transmit with different UEs on different time-frequency resources.
  • the base station selects multiple UEs, including:
  • the base station acquires signal strengths of the multiple UEs, where the signal strength may be an Reference Signal Received Power (RSRP) value and a reference signal reception quality of the multiple UEs (Reference Signal) Received Quality, RSRQ), etc., are not limited in the embodiment of the present invention;
  • RSRP Reference Signal Received Power
  • RSRQ Reference Signal Received Quality
  • the base station selects, according to the correspondence between the signal strength interval and the beam coverage range, the first UE in the first beam coverage, the second UE in the second beam coverage, the third UE in the third beam coverage, and the third The fourth UE within the coverage of the four beams.
  • the different signal strength intervals correspond to different beam coverage ranges, and according to the signal strengths of the multiple UEs, the beam coverage ranges corresponding to the multiple UEs may be determined.
  • the base station determines a precoding matrix corresponding to the multiple UEs according to a correspondence between a beam coverage range and a precoding matrix, where a precoding matrix corresponding to the multiple UEs is a rank in a codebook set.
  • a precoding matrix indicator (PMI) in the codebook set is a precoding matrix with a rank of 2 for precoding matrices of 2, 8, 12, and 15. among them:
  • a precoding matrix with a PMI of 2 is denoted as W 2 , a possible implementation form is
  • a precoding matrix with a PMI of 8 is denoted as W 8 , a possible implementation form is
  • a precoding matrix with a PMI of 12 is denoted as W 12 , a possible implementation form is
  • a precoding matrix with a PMI of 15 is denoted as W 15 , a possible implementation form is
  • the base station sends the PMI of the precoding matrix corresponding to the multiple UEs to the corresponding UE.
  • the base station sends the PMI of the first precoding matrix corresponding to the first UE to the first UE, and sends the PMI of the second precoding matrix corresponding to the second UE to the second UE, and the third UE corresponds to the third UE.
  • the PMI of the precoding matrix is sent to the third UE, and the PMI of the fourth precoding matrix corresponding to the fourth UE is sent to the fourth UE, where the first precoding matrix, the second precoding matrix, the third precoding matrix, and
  • the fourth precoding matrix is a different precoding matrix with a rank of 2 in the codebook set.
  • the multiple UEs report the PMI of the precoding matrix selected by the multiple UEs from the codebook set to the base station based on the channel measurement.
  • the base station after receiving the PMI reported by the multiple UEs, the base station performs the following processing:
  • the base station uses the base station as the multiple The precoding matrix determined by the UE performs precoding processing on the data of the plurality of UEs, respectively.
  • the base station when the base station determines that the precoding matrix corresponding to the PMI reported by the first UE is different from the first precoding matrix determined by the base station for the first UE, the base station adopts a first precoding matrix pair.
  • the data of the first UE is pre-coded; the base station determines that the precoding matrix corresponding to the PMI reported by the second UE and the second precoding matrix determined by the base station for the second UE are not Simultaneously, precoding the data of the second UE by using a second precoding matrix; the base station determining, by the base station, a precoding matrix corresponding to the PMI reported by the third UE, and the base station being the third UE
  • the third precoding matrix is different, the data of the third UE is pre-coded by using a third precoding matrix; the base station determines the precoding matrix corresponding to the PMI reported by the fourth UE.
  • the fourth precoding matrix determined by the base station for the fourth UE is different The fourth pre-coding matrix
  • the specific processing procedure is as follows:
  • the base station performs precoding processing on the data of the first UE according to the first equivalent precoding matrix, where the first equivalent precoding matrix is a matrix obtained by multiplying the first precoding matrix by the first weighting matrix,
  • the first precoding matrix is a precoding matrix with a rank of 2 in the codebook set;
  • the base station maps the pre-coded data to the first beam for transmission.
  • the first equivalent precoding matrix is specifically: According to the obtained first equivalent precoding matrix, the data of the first UE is transmitted on the beam 0; correspondingly, the UE that is considered to be within the coverage of the beam 0 can be measured by using the PMI2.
  • the first equivalent precoding matrix is specifically: According to the obtained first equivalent precoding matrix, the data of the first UE is transmitted on the beam 1; correspondingly, the UE located within the coverage of the beam 1 can be measured by using the PMI 8.
  • the first equivalent precoding matrix is specifically: According to the obtained first equivalent precoding matrix, the data of the first UE is transmitted on the beam 2; correspondingly, the UE located within the coverage of the beam 2 can be measured by using the PMI 12.
  • the first equivalent precoding matrix is specifically: According to the obtained first equivalent precoding matrix, the data of the first UE is transmitted on the beam 3; correspondingly, the UE that is considered to be within the coverage of the beam 3 can be measured by using the PMI 15.
  • the following describes the formation process of the narrow beams, that is, beam 0, beam 1, beam 2, and beam 3, by taking the distribution 2*4 of the antenna array of the AAS of the base station as an example.
  • the antenna array structure of the base station is as shown in FIG. 3.
  • the 8TRX (8-antenna reception/transmission) dual-polarized antenna forms an antenna array of 2 rows and 4 columns.
  • the downtilt angles of the antennas in the two polarization directions are different, specifically: the beam formed by the antennas having the polarization direction of +45 degrees sets the first downtilt angle, such as Setting a small downtilt angle so that the beam formed by the four antennas in the same polarization direction covers the outer circle; the beam formed by the four antennas having the polarization direction of -45 degrees sets the second downtilt angle, such as setting the first A downtilt angle with a large downtilt angle, so that the beam formed by the four antennas in the same polarization direction covers the inner ring.
  • FIG. 4 Show.
  • Beam 0 is the left inner beam
  • beam 1 is the left outer beam
  • beam 2 is the right inner beam
  • beam 3 is the right outer beam.
  • the processing procedure of the base station performing data transmission by using the second beam and the second UE is similar to the processing procedure of the first UE, as follows:
  • the base station performs precoding processing on the data of the second UE according to the second equivalent precoding matrix, and then maps the precoded data to the second beam for transmission, where the second The equivalent precoding matrix is a matrix obtained by multiplying the second precoding matrix by the first weighting matrix, and the second precoding matrix is a precoding matrix of rank 2 in the codebook set.
  • the processing procedure of the base station performing data transmission by using the third beam and the third UE is similar to the processing procedure of the first UE, as follows:
  • the base station performs precoding processing on the data of the third UE according to the third equivalent precoding matrix, and then maps the precoded data to the third beam for transmission, where the third The equivalent precoding matrix is a matrix obtained by multiplying a third precoding matrix and a first weighting matrix, and the third precoding matrix is a precoding matrix with a rank of 2 in the codebook set.
  • the processing procedure of the base station performing data transmission by using the fourth beam and the fourth UE is similar to the processing procedure of the first UE, as follows:
  • the base station performs precoding processing on the data of the fourth UE according to the fourth equivalent precoding matrix, and then maps the precoded data to the fourth beam for transmission, where the fourth The equivalent precoding matrix is a matrix obtained by multiplying a fourth precoding matrix by a set first weighting matrix, and the fourth precoding matrix is a precoding matrix with a rank of 2 in the codebook set.
  • the base station may map the pre-coded data of the multiple UEs to the beams of different polarization directions of the AAS for transmission by using the second weighting matrix.
  • the base station separately performs precoding processed data of the first UE, precoding processed data of the second UE, and precoding processing of the third UE by using a second weighting matrix
  • the data and the pre-coded data of the fourth UE are mapped to the first beam, the second beam, the third beam, and the fourth beam for transmission.
  • the second weighting matrix is a P ⁇ Q-dimensional matrix, and an element having a value of zero in the second weighting matrix and an element having a value other than zero are alternately distributed, wherein P is the AAS including dual polarization.
  • the number of antennas, Q is the number of narrow beams formed. In the embodiment of the present invention, the number of narrow beams formed is 4, that is, Q is 4.
  • the data of the multiple UEs may be mapped to different beams for transmission by using the foregoing second weighting matrix, where the first beam, the second beam, the third beam, and the fourth beam are dual-polarized antennas in the AAS.
  • the mapping relationship between them is shown in Figure 5.
  • the solution provided by the embodiment of the present invention is especially applicable to a high-load scenario.
  • the higher the load the greater the probability of multi-user (MU) pairing, and the average throughput of the cell is significantly increased.
  • the effective gain is derived from the multi-user spatial division multiplexing gain.
  • the solution provided by the embodiment of the present invention can obtain a large spatial multiplexing gain, and by setting different downtilt angles for antennas with different polarization directions, the coverage of the inner and outer rings is isolated, and therefore, the interference between the inner and outer beams is also Smaller.
  • the base station in addition to the data transmission using the four-beam transmission manner described in the foregoing embodiment shown in FIG. 3, the base station may also be used according to a network load condition, such as a resource block (Resource Block, RB).
  • a network load condition such as a resource block (Resource Block, RB).
  • the two-beam transmission method is selected for data transmission.
  • the multiple UEs selected by the base station in the cell include a fifth UE and a sixth UE, where the fifth UE is in a first beam or a second beam coverage, and the sixth UE is in the a third beam or a fourth beam coverage; the first beam and the second beam belong to a beam of a first polarization direction of the active antenna system AAS, and the third beam and the fourth beam belong to the A beam in the second polarization direction of the AAS; the beam in the first polarization direction has a first downtilt angle, and the beam in the second polarization direction has a second downtilt angle.
  • the base station performs data transmission with the fifth UE by using the first beam and the second beam to enhance the signal strength of the fifth UE.
  • the process is as follows:
  • the base station performs precoding processing on the data of the fifth UE according to the fifth equivalent precoding matrix, where the fifth equivalent precoding matrix is the fifth precoding matrix and the set third weight matrix Multiplying the obtained matrix, the fifth precoding matrix is a precoding matrix of rank 2 in the codebook set;
  • the base station maps the pre-coded data to the first beam and the second beam for transmission.
  • the third weighting matrix is:
  • the fifth equivalent precoding matrix is specifically: According to the obtained fifth equivalent precoding matrix, the data of the fifth UE is transmitted on beam 0 and beam 1; correspondingly, UEs located within the coverage of beam 0 and beam 1 can be considered to be measured using PMI2.
  • the fifth equivalent precoding matrix is specifically: According to the obtained fifth equivalent precoding matrix, the data of the fifth UE is transmitted on the beam 0 and the beam 1; correspondingly, the UE located in the coverage of the beam 0 and the beam 1 can be considered to be measured by using the PMI 8.
  • the fifth equivalent precoding matrix is specifically: According to the obtained fifth equivalent precoding matrix, the data of the fifth UE is transmitted on the beam 2 and the beam 3; correspondingly, the UE located in the coverage of the beam 2 and the beam 3 can be regarded as being measured by using the PMI 8.
  • the fifth equivalent precoding matrix is specifically: According to the obtained fifth equivalent precoding matrix, the data of the fifth UE is transmitted on the beam 2 and the beam 3; correspondingly, the UE located in the coverage of the beam 2 and the beam 3 can be regarded as being measured by using the PMI 8.
  • the fifth equivalent precoding matrix not only the data of the fifth UE but also the first beam and the second beam transmission may be acquired, and the third may be acquired.
  • the process of performing data transmission with the sixth UE by using the third beam and the fourth beam by the base station is similar to the processing procedure of the fifth UE, as follows:
  • the base station performs precoding processing on the data of the sixth UE according to the sixth equivalent precoding matrix, and then maps the precoded data to the third beam and the fourth beam for transmission.
  • the sixth equivalent precoding matrix is a matrix obtained by multiplying a sixth precoding matrix and the third weighting matrix, and the sixth precoding matrix is a precoding matrix with a rank of 2 in the codebook set.
  • the base station can flexibly select a four-beam transmission mode and two beam transmissions. Way to transmit data or signaling. For example, when the network load is less than the set threshold, the two-beam transmission mode is selected to transmit data or signaling to avoid the problem of wasted beam resources due to the presence of more idle beams; when the network load is greater than or equal to the set threshold, Four-beam transmission mode is selected to transmit data or signaling to reduce network load.
  • the pre-coded data of the different UEs may be weighted by using a 90° bridge matrix, thereby implementing antennas with different polarization directions. Power sharing. Specifically, when the base station maps data of the multiple UEs to beams of different polarization directions for transmission, the specific processing procedure is as follows:
  • the base station performs weighting processing on the pre-coded data of the multiple UEs according to the set 90° bridge matrix, and maps the weighted processed data to beams of different polarization directions for transmission. .
  • the base station performs precoding processing on the data of the multiple UEs according to the equivalent precoding matrix corresponding to the multiple UEs, so as to map data of the multiple UEs to corresponding antenna ports.
  • the base station performs precoding processing on the data of the multiple UEs according to the equivalent precoding matrix corresponding to the multiple UEs, so as to map data of the multiple UEs to corresponding antenna ports.
  • the data of the virtual beam transform processing of the plurality of UEs is subjected to a first weighting process to make the powers of the antennas of different polarization directions the same; and then, the data of the first weighting process of the plurality of UEs is subjected to power amplification processing;
  • performing, according to the inverse matrix of the 90° bridge matrix performing second weighting processing on the data after the power amplification processing of the multiple UEs; and finally, performing data of the second weighting processing of the multiple UEs, respectively Map to different beams for transmission.
  • the base station performs the first according to the 90° bridge matrix.
  • the pre-coded data of the UE is weighted, and the processed data of the first UE is mapped to the first beam for transmission; according to the 90° bridge matrix, the second UE is used.
  • mapping the processed data of the second UE to the second beam for transmission Performing weighting processing on the pre-coded data, mapping the processed data of the second UE to the second beam for transmission; according to the 90° bridge matrix, for the third UE Performing a weighting process on the pre-coded data, mapping the processed data of the third UE to the third beam for transmission; and, according to the 90° bridge matrix, to the fourth UE
  • the pre-coded data is weighted, and the processed data of the fourth UE is mapped to the fourth beam for transmission.
  • the data of the pre-coded data of the fifth UE and the data of the pre-coded data of the sixth UE are processed by using a 90° bridge matrix, and the foregoing
  • the processing procedure for the first UE in the four-beam transmission mode is similar, and will not be exemplified one by one.
  • Embodiment 3 As shown in FIG. 6, the data transmission of any UE is taken as an example, wherein the data sequence of the UE is s1, and the processing procedure is as follows: the base station adopts an equivalent precoding matrix, and records for The data sequence s1 is pre-coded to map the data sequence s1 to different antenna ports. In this embodiment, two antenna ports are taken as an example, which are denoted as p1 and p2. Then, the base station performs pre-coding processing.
  • the data is subjected to virtual beam transformation to map the pre-coded data to antennas of different polarization directions, and different polarization directions are respectively recorded as q1 and q2, wherein the matrix used by the virtual beam transformation is Then, the base station performs the first weighting process on the data after the virtual beam transform processing by using the set 90° bridge matrix, and the obtained sequence is recorded as which is Then, the base station pair Perform power amplification processing and transform using the inverse matrix of the 90° bridge matrix, and the resulting sequence is recorded as Finally, the base station will Map to beam A or beam B for transmission.
  • the 90° bridge matrix is a U matrix, then Therefore, all precoding matrices with a rank of 2 in the codebook set are polled. After that, the powers of the antennas with different polarization directions can be equal, that is,
  • the power equalization is achieved regardless of the form of the precoding matrix.
  • the precoding matrix is [1 1] T and [1 -1] T
  • the power of the antennas in the two polarization directions is completely Focused on one polarization direction
  • the precoding matrix is [1 j] T and [1 -j] T
  • the antennas of the two polarization directions can share power, so the weighting by the bridge matrix can The power between the antennas in different polarization directions is shared.
  • the AAS includes eight dual-polarized antennas as an example.
  • the number of dual-polarized antennas included in the AAS is not limited, and other numbers of dual-polarized antennas are used.
  • the processing of the data transmission is similar to the embodiment of the present invention, and is not illustrated here.
  • the above method processing flow can be implemented by a software program, which can be stored in the storage medium.
  • a software program which can be stored in the storage medium.
  • the above method steps are performed.
  • a data transmission apparatus includes: a selection module 71 and a processing module 72, wherein the selection module 71 and the processing Module 72 may perform the embodiment illustrated in FIG. 1, the embodiment illustrated in FIG. 2, or the method described in the embodiment illustrated in FIG. 6.
  • the data transmission device provided by the embodiment of the present invention will be described below by taking the method described in the embodiment shown in FIG. 2 by the selection module 71 and the processing module 72 as an example. details as follows:
  • a selection module 71 configured to select a plurality of user equipment UEs in a cell, where the multiple UEs include a first UE, a second UE, a third UE, and a fourth UE, where the first UE is in a first beam coverage In the range, the second UE is in the second beam coverage, the third UE is in the third beam coverage, and the fourth UE is in the fourth beam coverage; the first beam and the The second beam belongs to a beam in a first polarization direction of the active antenna system AAS, and the third beam and the fourth beam belong to a beam in a second polarization direction of the AAS; the beam in the first polarization direction Having a first downtilt angle, the beam of the second polarization direction having a second downtilt angle, wherein the device covers the cell through the AAS;
  • the processing module 72 is configured to perform data transmission with the first UE by using the first beam, and perform data transmission with the second UE by using the second beam, by using the first beam.
  • the three beams perform data transmission with the third UE, and perform data transmission with the fourth UE by using the fourth beam.
  • the selecting module 71 is specifically configured to:
  • the multiple UEs are selected.
  • the selecting module 71 is specifically configured to:
  • the first UE in the first beam coverage the second UE in the second beam coverage, and the third in the third beam coverage range.
  • the apparatus provided by the embodiment of the present invention further includes: an acquiring module, configured to acquire signal strengths of the multiple UEs, for example, the acquiring module separately collects statistics, where the multiple UEs are in the first beam, the second beam, and the first The uplink RSRP (UL RSRP) value of the Sounding Reference Signal (SRS) on the three beams and the fourth beam.
  • an acquiring module configured to acquire signal strengths of the multiple UEs, for example, the acquiring module separately collects statistics, where the multiple UEs are in the first beam, the second beam, and the first The uplink RSRP (UL RSRP) value of the Sounding Reference Signal (SRS) on the three beams and the fourth beam.
  • UL RSRP The uplink RSRP
  • the selecting module 71 acquires the signal strengths of the multiple UEs by using the acquiring module, and determines, according to the signal strengths of the multiple UEs, a signal strength interval to which the signal strengths of the multiple UEs belong; Corresponding relationship between the signal strength interval and the beam coverage range, selecting the first UE in the first beam coverage, the second UE in the second beam coverage, the third UE in the third beam coverage, and the fourth beam coverage The fourth UE within.
  • processing module 72 is specifically configured to:
  • Precoding the data of the first UE according to the first equivalent precoding matrix where the first equivalent precoding matrix is a matrix obtained by multiplying the first precoding matrix by the first weighting matrix, where A precoding matrix is a precoding matrix with a rank of 2 in the codebook set;
  • processing module 72 is specifically configured to:
  • the second equivalent precoding matrix is a matrix obtained by multiplying the second precoding matrix by the first weighting matrix
  • the second precoding matrix is a precoding matrix with a rank of 2 in the codebook set
  • the pre-coded data is mapped onto the second beam for transmission.
  • processing module 72 is specifically configured to:
  • the third equivalent precoding matrix is a matrix obtained by multiplying the third precoding matrix by the first weighting matrix
  • the third precoding matrix is a precoding matrix with a rank of 2 in the codebook set
  • the pre-coded data is mapped onto the third beam for transmission.
  • processing module 72 is specifically configured to:
  • the fourth equivalent precoding matrix is a matrix obtained by multiplying the fourth precoding matrix by the first weighting matrix
  • the fourth precoding matrix is a precoding matrix with a rank of 2 in the codebook set
  • the pre-coded data is mapped onto the fourth beam for transmission.
  • processing module 72 is specifically configured to:
  • the 90° bridge matrix performs weighting processing on the pre-coded data of the third UE, and maps the processed data of the third UE to the third beam for transmission;
  • the 90° bridge matrix performs weighting processing on the pre-coded data of the fourth UE, and maps the processed data of the fourth UE to the fourth beam for transmission.
  • a base station including the apparatus described in the embodiment shown in FIG.
  • a base station in this embodiment may refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface.
  • the base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), this application is not limited.
  • a base station including a transceiver 81, and at least one processor 82 connected to the transceiver 81, wherein:
  • the processor 82 reads the program in the memory 83 and performs the following process:
  • the multiple UEs include a first UE, a second UE, a third UE, and a fourth UE, where the first UE is in a first beam coverage range, where the The second UE is in the second beam coverage, the third UE is in the third beam coverage, and the fourth UE is in the fourth beam coverage; the first beam and the second beam belong to a beam in a first polarization direction of the source antenna system AAS, the third beam and the fourth beam belong to a beam in a second polarization direction of the AAS; the beam in the first polarization direction has a first downtilt angle, The beam in the second polarization direction has a second downtilt angle, wherein the device covers the cell through the AAS;
  • the transceiver 81 is configured to receive and transmit data under the control of the processor 82.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 82 and various circuits of memory represented by memory 83.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 81 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.
  • the processor 82 is responsible for managing the bus architecture and general processing, and the memory 83 can store data used by the processor 82 in performing the operations.
  • the specific execution is:
  • the multiple UEs are selected.
  • the specific execution is:
  • the first UE in the first beam coverage the second UE in the second beam coverage, the third UE in the third beam coverage, and the fourth beam coverage.
  • the fourth UE in the range is selected, according to the correspondence between the signal strength interval and the beam coverage range.
  • the processor when the processor performs data transmission with the first UE by using the first beam, the processor specifically performs:
  • Precoding the data of the first UE according to the first equivalent precoding matrix where the first equivalent precoding matrix is a matrix obtained by multiplying the first precoding matrix by the first weighting matrix, where A precoding matrix is a precoding matrix with a rank of 2 in the codebook set;
  • the processor when the processor performs data transmission with the second UE by using the second beam, the processor specifically performs:
  • the second equivalent precoding matrix is a matrix obtained by multiplying the second precoding matrix by the first weighting matrix
  • the second precoding matrix is a precoding matrix with a rank of 2 in the codebook set
  • the pre-coded data is mapped onto the second beam for transmission.
  • the processor when the processor performs data transmission with the third UE by using the third beam, the processor specifically performs:
  • the third equivalent precoding matrix is a matrix obtained by multiplying the third precoding matrix by the first weighting matrix
  • the third precoding matrix is a precoding matrix with a rank of 2 in the codebook set
  • the pre-coded data is mapped onto the third beam for transmission.
  • the processor when the processor performs data transmission with the fourth UE by using the fourth beam, the processor specifically performs:
  • the fourth equivalent precoding matrix is a matrix obtained by multiplying the fourth precoding matrix by the first weighting matrix
  • the fourth precoding matrix is a precoding matrix with a rank of 2 in the codebook set
  • the pre-coded data is mapped onto the fourth beam for transmission.
  • the processor performs data transmission with the first UE by using the first beam, and performs data transmission with the second UE by using the second beam, on the same time-frequency resource.
  • Performing data transmission with the third UE by using the third beam, and performing data transmission with the fourth UE by using the fourth beam specifically performing:
  • the 90° bridge matrix performs weighting processing on the pre-coded data of the third UE, and maps the processed data of the third UE to the third beam for transmission;
  • the 90° bridge matrix performs weighting processing on the pre-coded data of the fourth UE, and maps the processed data of the fourth UE to the fourth beam for transmission.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the present invention is directed to a method, apparatus (system), and computer program according to an embodiment of the present invention.
  • the flow chart and/or block diagram of the product is described. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG.
  • These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

A data transmission method and device. The method comprises: a base station selects multiple UEs in a cell, the multiple UEs comprising a first UE, a second UE, a third UE, and a fourth UE, wherein the first UE is within coverage of a first beam, the second UE is within coverage of a second beam, the third UE is within coverage of a third beam, and the fourth UE is within coverage of a fourth beam; the first beam and the second beam are beams in a first direction of polarization of an AAS, and the third beam and the fourth beam are beams in a second direction of polarization of the ASS; the beams in the first direction of polarization have a first downtilt angle, and the beams in the second direction of polarization have a second downtilt angle; on same time-frequency resources, data transmission with the first UE is carried out by means of the first beam, data transmission with the second UE is carried out by means of the second beam, data transmission with the third UE is carried out by means of the third beam, and data transmission with the fourth UE is carried out by means of the fourth beam.

Description

一种数据传输方法和装置Data transmission method and device 技术领域Technical field
本发明涉及无线通信技术领域,特别涉及一种数据传输方法和装置。The present invention relates to the field of wireless communication technologies, and in particular, to a data transmission method and apparatus.
背景技术Background technique
多入多出(Multiple Input Multiple Output,简称MIMO)技术的应用使得数据的传输速率得到了极大的提升,然而传统的单用户MIMO技术的速率增益的获得不仅依赖于发射机的天线数,而且对接收机的天线数也有一定要求。由于接收机受限于自身尺寸,通常无法配备太多天线,而且单用户MIMO技术的增益也受限于无线信道,当发射/接收信道相关性较强时,则无法获得较高的空分复用增益。The application of Multiple Input Multiple Output (MIMO) technology has greatly improved the data transmission rate. However, the rate gain of the traditional single-user MIMO technology depends not only on the number of antennas of the transmitter, but also There are also certain requirements on the number of antennas of the receiver. Since the receiver is limited by its size, it is usually not possible to equip too many antennas, and the gain of single-user MIMO technology is also limited by the wireless channel. When the transmit/receive channel correlation is strong, a higher space division cannot be obtained. Use the gain.
为了更好利用MIMO的空分复用增益,多用户MIMO技术得到更多的应用。对于多用户MIMO技术,如何降低多用户之间的干扰是个关键问题。对于时分双工(Time Division Duplex,简称TDD)系统而言,发射端利用上下行信道的互易性获取下行信道信息,并构造出相互正交的波束来降低用户间干扰。然而对于频分双工(Frequency Division Duplex,简称FDD)系统,由于基站端获取准确下行信道信息较为困难,多用户间干扰问题较难规避,影响了多用MIMO的性能。In order to better utilize the space division multiplexing gain of MIMO, multi-user MIMO technology is more applicable. For multi-user MIMO technology, how to reduce interference between multiple users is a key issue. For a Time Division Duplex (TDD) system, the transmitting end uses the reciprocity of the uplink and downlink channels to acquire downlink channel information, and constructs mutually orthogonal beams to reduce inter-user interference. However, for the Frequency Division Duplex (FDD) system, it is difficult to obtain accurate downlink channel information at the base station, and the multi-user interference problem is difficult to avoid, which affects the performance of multi-purpose MIMO.
发明内容Summary of the invention
本发明实施例提供了一种数据传输方法和装置,用于解决现有技术中由于基站端获取准确下行信道信息较为困难,多用户间干扰问题较难规避,影响了多用MIMO的性能的问题。The embodiments of the present invention provide a data transmission method and apparatus, which are used to solve the problem that the base station side obtains accurate downlink channel information in the prior art, and the multi-user interference problem is difficult to avoid, which affects the performance of the multi-purpose MIMO.
第一方面,提供了一种数据传输方法,包括:In a first aspect, a data transmission method is provided, including:
基站选择小区中的M个用户设备UE,所述M个UE中至少一个UE处于具有第一下倾角的波束覆盖范围内,所述M个UE中至少一个UE处于具 有第二下倾角的波束覆盖范围内,其中,所述具有第一下倾角的波束属于有源天线系统AAS第一极化方向的波束,所述具有第二下倾角的波束属于所述AAS第二极化方向的波束,所述具有第一下倾角的波束和所述具有第二下倾角的波束的数量均为至少两个,M为大于或等于2的正整数,所述基站通过所述AAS覆盖所述小区;The base station selects M user equipment UEs in the cell, at least one of the M UEs is in a beam coverage range with a first downtilt angle, and at least one of the M UEs is in the a beam coverage having a second downtilt angle, wherein the beam having the first downtilt angle belongs to a beam of a first polarization direction of the active antenna system AAS, and the beam having the second downtilt angle belongs to the AAS a beam in a bipolar direction, the number of beams having a first downtilt angle and the number of beams having a second downtilt angle are at least two, and M is a positive integer greater than or equal to 2, and the base station passes the AAS covers the cell;
所述基站在相同的时频资源上,根据不同的预编码矩阵,分别通过所述M个UE对应的波束,与所述M个UE进行数据传输。The base station performs data transmission with the M UEs on the same time-frequency resource according to different precoding matrices through the beams corresponding to the M UEs.
第二方面,提供了另一种数据传输方法,包括:In a second aspect, another data transmission method is provided, including:
基站选择小区中的多个用户设备UE,所述多个UE包括第一UE、第二UE、第三UE和第四UE;其中,所述第一UE处于第一波束覆盖范围内,所述第二UE处于第二波束覆盖范围内,所述第三UE处于第三波束覆盖范围内,且所述第四UE处于第四波束覆盖范围内;所述第一波束和所述第二波束属于有源天线系统AAS第一极化方向的波束,所述第三波束和所述第四波束属于所述AAS第二极化方向的波束;所述第一极化方向的波束具有第一下倾角,所述第二极化方向的波束具有第二下倾角,其中所述基站通过所述AAS覆盖所述小区;The base station selects a plurality of user equipment UEs in the cell, where the multiple UEs include a first UE, a second UE, a third UE, and a fourth UE, where the first UE is in a first beam coverage range, The second UE is in the second beam coverage, the third UE is in the third beam coverage, and the fourth UE is in the fourth beam coverage; the first beam and the second beam belong to a beam of the first polarization direction of the active antenna system AAS, the third beam and the fourth beam belong to a beam of the second polarization direction of the AAS; the beam of the first polarization direction has a first downtilt angle The second polarization direction beam has a second downtilt angle, wherein the base station covers the cell by using the AAS;
所述基站在相同的时频资源上,通过所述第一波束与所述第一UE进行数据传输,通过所述第二波束与所述第二UE进行数据传输,通过所述第三波束与所述第三UE进行数据传输,以及通过所述第四波束与所述第四UE进行数据传输。The base station performs data transmission with the first UE by using the first beam, and performs data transmission with the second UE by using the second beam on the same time-frequency resource, and the third beam is used to The third UE performs data transmission, and performs data transmission with the fourth UE by using the fourth beam.
第三方面,提供了一种计算机可读存储介质,其中存储有可执行的程序代码,该程序代码用以实现第一方面或者第二方面所述的方法。In a third aspect, a computer readable storage medium is provided, wherein executable program code is stored, the program code being used to implement the method of the first aspect or the second aspect.
第四方面,提供了一种数据传输装置,包含用于执行第一方面或者第二方面中的方法的模块。In a fourth aspect, there is provided a data transmission apparatus comprising means for performing the method of the first aspect or the second aspect.
第五方面,提供了一种基站,包括第四方面提供的装置。In a fifth aspect, a base station is provided, comprising the apparatus provided by the fourth aspect.
第六方面,提供了另一种基站,包括:收发器、处理器以及存储器,其中:所述处理器读取所述存储器中的程序,执行第一方面或者第二方面所述 的方法。In a sixth aspect, a base station is provided, including: a transceiver, a processor, and a memory, wherein: the processor reads a program in the memory, performing the first aspect or the second aspect Methods.
本发明实施例提供的方法和装置中,在MU-MIMO中,由于不同极化方向的窄波束具有不同的下倾角,可以实现不同UE的数据在垂直方向上的隔离,通过采用不同的预编码矩阵对不同UE的数据进行预编码处理,可以实现不同UE的数据在水平方向上的隔离,由于不同UE的数据在水平和垂直方向均进行了有效隔离,从而在数据传输时降低了用户间的干扰。In the method and apparatus provided by the embodiments of the present invention, in MU-MIMO, since narrow beams of different polarization directions have different downtilt angles, data of different UEs may be vertically separated by using different precoding. The matrix pre-codes the data of different UEs, so that the data of different UEs can be isolated in the horizontal direction. Since the data of different UEs are effectively isolated in the horizontal and vertical directions, the data transmission is reduced during the user. interference.
附图说明DRAWINGS
图1为本发明实施例一中提供的一种数据传输方法的流程示意图;1 is a schematic flowchart of a data transmission method according to Embodiment 1 of the present invention;
图2为本发明实施例二中提供的一种数据传输方法的流程示意图;2 is a schematic flowchart of a data transmission method according to Embodiment 2 of the present invention;
图3为本发明实施例中所述基站的天线阵列的结构示意图;3 is a schematic structural diagram of an antenna array of the base station according to an embodiment of the present invention;
图4为本发明实施例中形成的4个窄波束的结构示意图;4 is a schematic structural diagram of four narrow beams formed in an embodiment of the present invention;
图5为本发明实施例中形成的4个窄波束与AAS中的双极化天线之间的一种可选的映射关系的示意图;FIG. 5 is a schematic diagram of an optional mapping relationship between four narrow beams formed in an embodiment of the present invention and a dual-polarized antenna in an AAS;
图6为本发明实施例三中提供的一种数据传输方法的流程示意图;FIG. 6 is a schematic flowchart diagram of a data transmission method according to Embodiment 3 of the present invention;
图7为本发明实施例四中提供的一种数据传输装置的示意图;FIG. 7 is a schematic diagram of a data transmission apparatus according to Embodiment 4 of the present invention; FIG.
图8为本发明实施例四中提供的一种基站的示意图。FIG. 8 is a schematic diagram of a base station according to Embodiment 4 of the present invention.
具体实施方式detailed description
本发明实施例中形成的窄波束之间具有一定的空间隔离度,其中,通过对不同极化方向的天线设置不同的下倾角,可以实现不同终端使用的窄波束在垂直方向上的隔离,通过使不同的终端使用不同的预编码矩阵,可以实现不同终端使用的窄波束在水平方向上的隔离。由于本发明实施例中形成的窄波束之间具有一定的空间隔离度,在多用户多输入多输出(Multiple-user MIMO,简称MU-MIMO)中能够降低用户间的干扰,进而提升了MU-MIMO的性能。The narrow beams formed in the embodiments of the present invention have a certain degree of spatial isolation. In the vertical direction, the narrow beams of different terminals can be isolated in the vertical direction by setting different downtilt angles for the antennas in different polarization directions. By using different precoding matrices for different terminals, the narrow beams of different terminals can be isolated in the horizontal direction. Since the narrow beams formed in the embodiment of the present invention have a certain spatial isolation degree, the interference between users can be reduced in the multi-user multiple input multiple output (Multi-user MIMO, MU-MIMO), thereby improving the MU- MIMO performance.
本发明实施例中基于有源天线系统(Active Antenna System,简称AAS), AAS是无线通信中一种新型的射频器件,可以定义为天线和射频的集成,在物理站点上可以看作是射频拉远单元(Remote Radio Unit,简称RRU)和天线的一体化,即将原有的RRU单元的功能与天线的功能合并。由于AAS一体化的特点,可采用射频多通道的技术对天线的垂直方向的阵子阵列和水平方向的阵子阵列进行控制,灵活的控制天线在垂直和水平方向的波束,从而达到改善无线信号的覆盖质量提升网络容量的目的。In the embodiment of the present invention, an Active Antenna System (AAS) is used. AAS is a new type of RF device in wireless communication. It can be defined as the integration of antenna and radio. It can be regarded as the integration of Remote Radio Unit (RRU) and antenna at the physical site. The function of the RRU unit is combined with the function of the antenna. Due to the characteristics of AAS integration, the RF multi-channel technology can be used to control the vertical array of antennas and the array of horizontal arrays, and the antennas in the vertical and horizontal directions can be flexibly controlled to improve the coverage of wireless signals. Quality improves the purpose of network capacity.
下面结合说明书附图对本发明实施例作进一步详细描述。应当理解,此处所描述的实施例仅用于说明和解释本发明,并不用于限定本发明。The embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It is to be understood that the embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
本发明实施例一中,提供了一种数据传输方法,如图1所示,所述方法包括:In the first embodiment of the present invention, a data transmission method is provided. As shown in FIG. 1, the method includes:
S11、基站选择小区中的M个用户设备UE,所述M个UE中至少一个UE处于具有第一下倾角的波束覆盖范围内,所述M个UE中至少一个UE处于具有第二下倾角的波束覆盖范围内,其中,所述具有第一下倾角的波束属于有源天线系统AAS第一极化方向的波束,所述具有第二下倾角的波束属于所述AAS第二极化方向的波束,所述具有第一下倾角的波束和所述具有第二下倾角的波束的数量均为至少两个,M为大于或等于2的正整数,所述基站通过所述AAS覆盖所述小区。S11. The base station selects M user equipment UEs in the cell, where at least one of the M UEs is in a beam coverage range with a first downtilt angle, and at least one UE of the M UEs is in a second downtilt angle. Within a beam coverage, wherein the beam having the first downtilt angle belongs to a beam of a first polarization direction of the active antenna system AAS, and the beam having the second downtilt angle belongs to a beam of the second polarization direction of the AAS And the number of the beam having the first downtilt angle and the beam having the second downtilt angle are at least two, and M is a positive integer greater than or equal to 2, and the base station covers the cell by using the AAS.
其中,所述第一下倾角大于或小于所述第二下倾角。Wherein the first downtilt angle is greater than or less than the second downtilt angle.
S12、所述基站在相同的时频资源上,根据不同的预编码矩阵,分别通过所述M个UE对应的波束,与所述M个UE进行数据传输。S12: The base station performs data transmission with the M UEs by using the beams corresponding to the M UEs according to different precoding matrices on the same time-frequency resource.
本发明实施例中,在MU-MIMO中,由于不同极化方向的窄波束具有不同的下倾角,可以实现不同UE的数据在垂直方向上的隔离,通过采用不同的预编码矩阵对不同UE的数据进行预编码处理,可以实现不同UE的数据在水平方向上的隔离,由于不同UE的数据在水平和垂直方向均进行了有效隔离,从而在数据传输时降低了用户间的干扰。In the embodiment of the present invention, in the MU-MIMO, since the narrow beams of different polarization directions have different downtilt angles, the data of different UEs can be isolated in the vertical direction, and different precoding matrices are used for different UEs. The data is pre-coded to realize the isolation of data of different UEs in the horizontal direction. Since the data of different UEs are effectively isolated in the horizontal and vertical directions, the interference between users is reduced during data transmission.
下面以AAS形成四个窄波束为例,对本发明实施例提供的数据传输方法进行详细说明。 The following describes the data transmission method provided by the embodiment of the present invention in detail by taking four narrow beams formed by the AAS as an example.
实施例二、本实施例中,第一波束和第二波束属于AAS第一极化方向的波束,第三波束和第四波束属于所述AAS第二极化方向的波束;所述第一极化方向的波束具有第一下倾角,所述第二极化方向的波束具有第二下倾角,具体过程如图2所示,包括如下步骤:Embodiment 2 In this embodiment, the first beam and the second beam belong to a beam in a first polarization direction of the AAS, and the third beam and the fourth beam belong to a beam in a second polarization direction of the AAS; The beam in the direction has a first downtilt angle, and the beam in the second polarization direction has a second downtilt angle. The specific process is as shown in FIG. 2, and includes the following steps:
S21、基站选择小区中的多个用户设备UE,所述多个UE包括第一UE、第二UE、第三UE和第四UE;其中,所述第一UE处于第一波束覆盖范围内,所述第二UE处于第二波束覆盖范围内,所述第三UE处于第三波束覆盖范围内,且所述第四UE处于第四波束覆盖范围内,所述基站通过所述AAS覆盖所述小区;S21. The base station selects multiple user equipments in the cell, where the multiple UEs include the first UE, the second UE, the third UE, and the fourth UE. The first UE is in the first beam coverage area. The second UE is in the second beam coverage, the third UE is in the third beam coverage, and the fourth UE is in the fourth beam coverage, and the base station covers the Community
S22、所述基站在相同的时频资源上,通过所述第一波束与所述第一UE进行数据传输,通过所述第二波束与所述第二UE进行数据传输,通过所述第三波束与所述第三UE进行数据传输,以及通过所述第四波束与所述第四UE进行数据传输。S22. The base station performs data transmission with the first UE by using the first beam, and performs data transmission with the second UE by using the second beam, by using the third beam. The beam performs data transmission with the third UE, and performs data transmission with the fourth UE by using the fourth beam.
本实施例中,第一波束和第二波束属于AAS第一极化方向的波束,第三波束和第四波束属于所述AAS第二极化方向的波束,由于不同极化方向的窄波束具有不同的下倾角,可以实现第一UE、第二UE、第三UE和第四UE的数据在垂直方向上的隔离;在相同的时频资源上,通过采用不同的预编码矩阵分别对第一UE、第二UE、第三UE和第四UE的数据进行预编码处理,可以实现第一UE、第二UE、第三UE和第四UE的数据在水平方向上的隔离,由于第一UE、第二UE、第三UE和第四UE的数据在水平和垂直方向均进行了有效隔离,从而在数据传输时降低了用户间的干扰。In this embodiment, the first beam and the second beam belong to a beam of a first polarization direction of the AAS, and the third beam and the fourth beam belong to a beam of the second polarization direction of the AAS, and the narrow beam has different polarization directions. The data of the first UE, the second UE, the third UE, and the fourth UE are isolated in the vertical direction according to different downtilt angles; on the same time-frequency resource, the first is obtained by using different precoding matrices respectively. The data of the UE, the second UE, the third UE, and the fourth UE are pre-coded, and the data of the first UE, the second UE, the third UE, and the fourth UE are isolated in the horizontal direction, because the first UE The data of the second UE, the third UE, and the fourth UE are effectively isolated in both the horizontal and vertical directions, thereby reducing interference between users during data transmission.
在具体实施中,一种可能的实现方式为:所述基站根据小区内的小区负载情况,判决是否开启在相同的时频资源上的MU-MIMO传输,具体如下:In a specific implementation, a possible implementation manner is: the base station determines whether to enable MU-MIMO transmission on the same time-frequency resource according to the cell load condition in the cell, as follows:
所述基站确定所述基站覆盖的小区的小区负载;Determining, by the base station, a cell load of a cell covered by the base station;
所述基站在确定出所述小区负载超过负载门限时,执行选择所述多个UE。The base station performs selection of the multiple UEs when determining that the cell load exceeds a load threshold.
具体的,所述基站在确定出所述小区负载超过负载门限时,开启多个UE 在相同的时频资源上的MU-MIMO传输,从而充分利用了时频资源,并降低了小区负载。若所述小区负载未超过负载门限,则可以在不同时频资源上与不同UE进行传输。Specifically, the base station starts multiple UEs when determining that the cell load exceeds a load threshold. MU-MIMO transmission on the same time-frequency resource, thereby making full use of time-frequency resources and reducing cell load. If the cell load does not exceed the load threshold, the UE may transmit with different UEs on different time-frequency resources.
在具体实施中,一种可能的实现方式为:所述基站选择多个UE,包括:In a specific implementation, a possible implementation manner is: the base station selects multiple UEs, including:
所述基站获取所述多个UE的信号强度,其中,所述信号强度可以为所述多个UE的上行参考信号接收功率(Reference Signal Received Power,简称RSRP)值、参考信号接收质量(Reference Signal Received Quality,RSRQ)等,本发明实施例中不做限定;The base station acquires signal strengths of the multiple UEs, where the signal strength may be an Reference Signal Received Power (RSRP) value and a reference signal reception quality of the multiple UEs (Reference Signal) Received Quality, RSRQ), etc., are not limited in the embodiment of the present invention;
所述基站根据所述多个UE的信号强度,确定出所述多个UE的信号强度所属的信号强度区间;Determining, by the base station, a signal strength interval to which the signal strengths of the multiple UEs belong according to signal strengths of the multiple UEs;
所述基站根据信号强度区间与波束覆盖范围的对应关系,选择第一波束覆盖范围内的第一UE、第二波束覆盖范围内的第二UE、第三波束覆盖范围内的第三UE以及第四波束覆盖范围内的第四UE。The base station selects, according to the correspondence between the signal strength interval and the beam coverage range, the first UE in the first beam coverage, the second UE in the second beam coverage, the third UE in the third beam coverage, and the third The fourth UE within the coverage of the four beams.
具体的,由于不同的信号强度区间对应不同的波束覆盖范围,根据所述多个UE的信号强度,可以确定出所述多个UE对应的波束覆盖范围。Specifically, the different signal strength intervals correspond to different beam coverage ranges, and according to the signal strengths of the multiple UEs, the beam coverage ranges corresponding to the multiple UEs may be determined.
进一步,所述基站根据波束覆盖范围与预编码矩阵之间的对应关系,确定所述多个UE对应的预编码矩阵,其中,所述多个UE对应的预编码矩阵均为码本集合中秩为2的预编码矩阵。Further, the base station determines a precoding matrix corresponding to the multiple UEs according to a correspondence between a beam coverage range and a precoding matrix, where a precoding matrix corresponding to the multiple UEs is a rank in a codebook set. A precoding matrix of 2.
例如,码本集合中预编码矩阵指示(Precoding Matrix Indicator,简称PMI)为2,8,12和15的预编码矩阵均秩为2的预编码矩阵。其中:For example, a precoding matrix indicator (PMI) in the codebook set is a precoding matrix with a rank of 2 for precoding matrices of 2, 8, 12, and 15. among them:
PMI为2的预编码矩阵记为W2,一种可能的实现形式为
Figure PCTCN2016078108-appb-000001
A precoding matrix with a PMI of 2 is denoted as W 2 , a possible implementation form is
Figure PCTCN2016078108-appb-000001
PMI为8的预编码矩阵记为W8,一种可能的实现形式为
Figure PCTCN2016078108-appb-000002
A precoding matrix with a PMI of 8 is denoted as W 8 , a possible implementation form is
Figure PCTCN2016078108-appb-000002
PMI为12的预编码矩阵记为W12,一种可能的实现形式为
Figure PCTCN2016078108-appb-000003
A precoding matrix with a PMI of 12 is denoted as W 12 , a possible implementation form is
Figure PCTCN2016078108-appb-000003
PMI为15的预编码矩阵记为W15,一种可能的实现形式为
Figure PCTCN2016078108-appb-000004
A precoding matrix with a PMI of 15 is denoted as W 15 , a possible implementation form is
Figure PCTCN2016078108-appb-000004
进一步,一种可能的实现方式中,基站将所述多个UE对应的预编码矩阵的PMI发送给相应的UE。Further, in a possible implementation, the base station sends the PMI of the precoding matrix corresponding to the multiple UEs to the corresponding UE.
具体的,基站将第一UE对应的第一预编码矩阵的PMI发送给第一UE,将第二UE对应的第二预编码矩阵的PMI发送给第二UE,将第三UE对应的第三预编码矩阵的PMI发送给第三UE,将第四UE对应的第四预编码矩阵的PMI发送给第四UE,其中,第一预编码矩阵、第二预编码矩阵、第三预编码矩阵和第四预编码矩阵为码本集合中不同的秩为2的预编码矩阵。Specifically, the base station sends the PMI of the first precoding matrix corresponding to the first UE to the first UE, and sends the PMI of the second precoding matrix corresponding to the second UE to the second UE, and the third UE corresponds to the third UE. The PMI of the precoding matrix is sent to the third UE, and the PMI of the fourth precoding matrix corresponding to the fourth UE is sent to the fourth UE, where the first precoding matrix, the second precoding matrix, the third precoding matrix, and The fourth precoding matrix is a different precoding matrix with a rank of 2 in the codebook set.
在具体实施中,所述多个UE基于信道测量,向基站上报所述多个UE从码本集合中选择的预编码矩阵的PMI。In a specific implementation, the multiple UEs report the PMI of the precoding matrix selected by the multiple UEs from the codebook set to the base station based on the channel measurement.
相应的,所述基站接收到所述多个UE上报的PMI后,进行如下处理:Correspondingly, after receiving the PMI reported by the multiple UEs, the base station performs the following processing:
所述基站在确定出所述多个UE上报的PMI对应的预编码矩阵与所述基站为所述多个UE确定出的预编码矩阵不同时,所述基站采用所述基站为所述多个UE确定出的预编码矩阵,分别对所述多个UE的数据进行预编码处理。When the base station determines that the precoding matrix corresponding to the PMI reported by the multiple UEs is different from the precoding matrix determined by the base station for the multiple UEs, the base station uses the base station as the multiple The precoding matrix determined by the UE performs precoding processing on the data of the plurality of UEs, respectively.
具体的,所述基站在确定出所述第一UE上报的PMI对应的预编码矩阵与所述基站为所述第一UE确定出的第一预编码矩阵不同时,采用第一预编码矩阵对所述第一UE的数据进行预编码处理;所述基站在确定出所述第二UE上报的PMI对应的预编码矩阵与所述基站为所述第二UE确定出的第二预编码矩阵不同时,采用第二预编码矩阵对所述第二UE的数据进行预编码处理;所述基站在确定出所述第三UE上报的PMI对应的预编码矩阵与所述基站为所述第三UE确定出的第三预编码矩阵不同时,采用第三预编码矩阵对所述第三UE的数据进行预编码处理;所述基站在确定出所述第四UE上报的PMI对应的预编码矩阵与所述基站为所述第四UE确定出的第四预编码矩阵不同 时,采用第四预编码矩阵对所述第四UE的数据进行预编码处理。Specifically, when the base station determines that the precoding matrix corresponding to the PMI reported by the first UE is different from the first precoding matrix determined by the base station for the first UE, the base station adopts a first precoding matrix pair. The data of the first UE is pre-coded; the base station determines that the precoding matrix corresponding to the PMI reported by the second UE and the second precoding matrix determined by the base station for the second UE are not Simultaneously, precoding the data of the second UE by using a second precoding matrix; the base station determining, by the base station, a precoding matrix corresponding to the PMI reported by the third UE, and the base station being the third UE When the third precoding matrix is different, the data of the third UE is pre-coded by using a third precoding matrix; the base station determines the precoding matrix corresponding to the PMI reported by the fourth UE. The fourth precoding matrix determined by the base station for the fourth UE is different The fourth pre-coding matrix is used to perform pre-coding processing on the data of the fourth UE.
基于上述任一实施例,在实施中,所述基站通过所述第一波束与所述第一UE进行数据传输时,具体处理过程如下:Based on any of the foregoing embodiments, in the implementation, when the base station performs data transmission with the first UE by using the first beam, the specific processing procedure is as follows:
所述基站根据第一等效预编码矩阵对所述第一UE的数据进行预编码处理,所述第一等效预编码矩阵为第一预编码矩阵与第一加权矩阵相乘得到的矩阵,所述第一预编码矩阵为码本集合中秩为2的预编码矩阵;The base station performs precoding processing on the data of the first UE according to the first equivalent precoding matrix, where the first equivalent precoding matrix is a matrix obtained by multiplying the first precoding matrix by the first weighting matrix, The first precoding matrix is a precoding matrix with a rank of 2 in the codebook set;
所述基站将预编码处理后的数据,映射到所述第一波束上进行传输。The base station maps the pre-coded data to the first beam for transmission.
其中,第一加权矩阵的一种可能的实现形式为:
Figure PCTCN2016078108-appb-000005
Wherein, a possible implementation form of the first weighting matrix is:
Figure PCTCN2016078108-appb-000005
基于上述第一加权矩阵的实现形式,相应的,若第一预编码矩阵为码本集合中PMI为2的预编码矩阵,则第一等效预编码矩阵具体为:
Figure PCTCN2016078108-appb-000006
根据得到的第一等效预编码矩阵可知,所述第一UE的数据在波束0上传输;相应的,可认为位于波束0覆盖范围内的UE可以使用PMI2进行测量。
Based on the implementation form of the first weighting matrix, if the first precoding matrix is a precoding matrix with a PMI of 2 in the codebook set, the first equivalent precoding matrix is specifically:
Figure PCTCN2016078108-appb-000006
According to the obtained first equivalent precoding matrix, the data of the first UE is transmitted on the beam 0; correspondingly, the UE that is considered to be within the coverage of the beam 0 can be measured by using the PMI2.
若第一预编码矩阵为码本集合中PMI为8的预编码矩阵,则第一等效预编码矩阵具体为:
Figure PCTCN2016078108-appb-000007
根据得到的第一等效预编码矩阵可知,所述第一UE的数据在波束1上传输;相应的,可认为位于波束1覆盖范围内的UE可以使用PMI8进行测量。
If the first precoding matrix is a precoding matrix with a PMI of 8 in the codebook set, the first equivalent precoding matrix is specifically:
Figure PCTCN2016078108-appb-000007
According to the obtained first equivalent precoding matrix, the data of the first UE is transmitted on the beam 1; correspondingly, the UE located within the coverage of the beam 1 can be measured by using the PMI 8.
若第一预编码矩阵为码本集合中PMI为12的预编码矩阵,则第一等效预 编码矩阵具体为:
Figure PCTCN2016078108-appb-000008
根据得到的第一等效预编码矩阵可知,所述第一UE的数据在波束2上传输;相应的,可认为位于波束2覆盖范围内的UE可以使用PMI12进行测量。
If the first precoding matrix is a precoding matrix with a PMI of 12 in the codebook set, the first equivalent precoding matrix is specifically:
Figure PCTCN2016078108-appb-000008
According to the obtained first equivalent precoding matrix, the data of the first UE is transmitted on the beam 2; correspondingly, the UE located within the coverage of the beam 2 can be measured by using the PMI 12.
若第一预编码矩阵为码本集合中PMI为15的预编码矩阵,则第一等效预编码矩阵具体为:
Figure PCTCN2016078108-appb-000009
根据得到的第一等效预编码矩阵可知,所述第一UE的数据在所述波束3上传输;相应的,可认为位于波束3覆盖范围内的UE可以使用PMI15进行测量。
If the first precoding matrix is a precoding matrix with a PMI of 15 in the codebook set, the first equivalent precoding matrix is specifically:
Figure PCTCN2016078108-appb-000009
According to the obtained first equivalent precoding matrix, the data of the first UE is transmitted on the beam 3; correspondingly, the UE that is considered to be within the coverage of the beam 3 can be measured by using the PMI 15.
从上述实施例可以看出,根据第一等效预编码矩阵,不仅可获知所述第一UE的数据使用所述第一波束传输,还可获知所述第二波束、所述第三波束和所述第四波束上的数据对所述第一UE的干扰情况。It can be seen from the foregoing embodiment that, according to the first equivalent precoding matrix, not only the data of the first UE is used, but the second beam and the third beam are also known. The interference condition of the data on the fourth beam to the first UE.
下面以基站的AAS的天线阵列的分布2*4为例,对上述窄波束,即波束0,波束1,波束2和波束3的形成过程进行说明。The following describes the formation process of the narrow beams, that is, beam 0, beam 1, beam 2, and beam 3, by taking the distribution 2*4 of the antenna array of the AAS of the base station as an example.
基站的天线阵列结构如图3所示,8TRX(8天线接收/发送)的双极化天线形成2行4列的天线阵列。通过控制具有不同极化方向的天线的下倾角,使得两个极化方向的天线的下倾角不同,具体为:4根具有+45度极化方向的天线形成的波束设置第一下倾角,如设置较小的下倾角,从而使该4根同极化方向的天线形成的波束覆盖外圈;4根具有-45度极化方向的天线形成的波束设置第二下倾角,如设置比第一下倾角大的下倾角,从而使该4根同极化方向的天线形成的波束覆盖内圈。由于不同极化方向的天线设置了不同的下倾角,可以实现不同终端使用的窄波束在垂直方向上的隔离。分别对不同极化方向的天线进行数字加权,可以得到多个窄波束。优选的,考虑到同极化方向的4根天线形成的窄波束之间的干扰问题,在进行数字加权时,分别对内外圈波束进行两波束的生成,从而生成4个窄波束,图4所示。图4中, 波束0为左内波束,波束1为左外波束,波束2为右内波束,波束3为右外波束。The antenna array structure of the base station is as shown in FIG. 3. The 8TRX (8-antenna reception/transmission) dual-polarized antenna forms an antenna array of 2 rows and 4 columns. By controlling the downtilt angle of the antennas having different polarization directions, the downtilt angles of the antennas in the two polarization directions are different, specifically: the beam formed by the antennas having the polarization direction of +45 degrees sets the first downtilt angle, such as Setting a small downtilt angle so that the beam formed by the four antennas in the same polarization direction covers the outer circle; the beam formed by the four antennas having the polarization direction of -45 degrees sets the second downtilt angle, such as setting the first A downtilt angle with a large downtilt angle, so that the beam formed by the four antennas in the same polarization direction covers the inner ring. Since the antennas with different polarization directions are set with different downtilt angles, the vertical beams of different terminals can be isolated in the vertical direction. A plurality of narrow beams can be obtained by digitally weighting antennas of different polarization directions. Preferably, considering the interference problem between the narrow beams formed by the four antennas in the same polarization direction, when digital weighting is performed, two beams are generated for the inner and outer ring beams respectively, thereby generating four narrow beams, FIG. 4 Show. In Figure 4, Beam 0 is the left inner beam, beam 1 is the left outer beam, beam 2 is the right inner beam, and beam 3 is the right outer beam.
需要说明的是,本发明实施例中采用“左”和“右”来区分水平方向上的窄波束,采用“内”和“外”来区分垂直方向上的窄波束。It should be noted that, in the embodiment of the present invention, "left" and "right" are used to distinguish narrow beams in the horizontal direction, and "inner" and "outer" are used to distinguish narrow beams in the vertical direction.
基于上述任一实施例,在实施中,所述基站通过所述第二波束与所述第二UE进行数据传输的处理过程,与上述所述第一UE的处理过程类似,具体如下:Based on any of the foregoing embodiments, in the implementation, the processing procedure of the base station performing data transmission by using the second beam and the second UE is similar to the processing procedure of the first UE, as follows:
所述基站先根据第二等效预编码矩阵对所述第二UE的数据进行预编码处理,再将预编码处理后的数据映射到所述第二波束上进行传输,其中,所述第二等效预编码矩阵为第二预编码矩阵与第一加权矩阵相乘得到的矩阵,所述第二预编码矩阵为码本集合中秩为2的预编码矩阵。The base station performs precoding processing on the data of the second UE according to the second equivalent precoding matrix, and then maps the precoded data to the second beam for transmission, where the second The equivalent precoding matrix is a matrix obtained by multiplying the second precoding matrix by the first weighting matrix, and the second precoding matrix is a precoding matrix of rank 2 in the codebook set.
基于上述任一实施例,在实施中,所述基站通过所述第三波束与所述第三UE进行数据传输的处理过程,与上述所述第一UE的处理过程类似,具体如下:Based on any of the foregoing embodiments, in the implementation, the processing procedure of the base station performing data transmission by using the third beam and the third UE is similar to the processing procedure of the first UE, as follows:
所述基站先根据第三等效预编码矩阵对所述第三UE的数据进行预编码处理,再将预编码处理后的数据映射到所述第三波束上进行传输,其中,所述第三等效预编码矩阵为第三预编码矩阵与第一加权矩阵相乘得到的矩阵,所述第三预编码矩阵为码本集合中秩为2的预编码矩阵。The base station performs precoding processing on the data of the third UE according to the third equivalent precoding matrix, and then maps the precoded data to the third beam for transmission, where the third The equivalent precoding matrix is a matrix obtained by multiplying a third precoding matrix and a first weighting matrix, and the third precoding matrix is a precoding matrix with a rank of 2 in the codebook set.
基于上述任一实施例,在实施中,所述基站通过所述第四波束与所述第四UE进行数据传输的处理过程,与上述所述第一UE的处理过程类似,具体如下:Based on any of the foregoing embodiments, in the implementation, the processing procedure of the base station performing data transmission by using the fourth beam and the fourth UE is similar to the processing procedure of the first UE, as follows:
所述基站先根据第四等效预编码矩阵对所述第四UE的数据进行预编码处理,再将预编码处理后的数据映射到所述第四波束上进行传输,其中,所述第四等效预编码矩阵为第四预编码矩阵与设定的第一加权矩阵相乘得到的矩阵,所述第四预编码矩阵为码本集合中秩为2的预编码矩阵。The base station performs precoding processing on the data of the fourth UE according to the fourth equivalent precoding matrix, and then maps the precoded data to the fourth beam for transmission, where the fourth The equivalent precoding matrix is a matrix obtained by multiplying a fourth precoding matrix by a set first weighting matrix, and the fourth precoding matrix is a precoding matrix with a rank of 2 in the codebook set.
本发明实施例中,所述基站可以通过第二加权矩阵,分别将所述多个UE的预编码处理后的数据,映射到所述AAS不同极化方向的波束上进行传输。 In the embodiment of the present invention, the base station may map the pre-coded data of the multiple UEs to the beams of different polarization directions of the AAS for transmission by using the second weighting matrix.
具体的,所述基站通过第二加权矩阵,分别将所述第一UE的预编码处理后的数据、所述第二UE的预编码处理后的数据、所述第三UE的预编码处理后的数据、以及所述第四UE的预编码处理后的数据,映射到所述第一波束、所述第二波束、所述第三波束、以及所述第四波束上进行传输。Specifically, the base station separately performs precoding processed data of the first UE, precoding processed data of the second UE, and precoding processing of the third UE by using a second weighting matrix The data and the pre-coded data of the fourth UE are mapped to the first beam, the second beam, the third beam, and the fourth beam for transmission.
其中,所述第二加权矩阵为P×Q维的矩阵,且所述第二加权矩阵中值为零的元素和值为非零的元素交替分布,其中,P为所述AAS包括双极化天线的数目,Q为形成的窄波束的数目。本发明实施例中是以形成的窄波束的数目为4进行说明的,即Q为4。The second weighting matrix is a P×Q-dimensional matrix, and an element having a value of zero in the second weighting matrix and an element having a value other than zero are alternately distributed, wherein P is the AAS including dual polarization. The number of antennas, Q is the number of narrow beams formed. In the embodiment of the present invention, the number of narrow beams formed is 4, that is, Q is 4.
本发明实施例中,第二加权矩阵的一种可能的实现形式如下:In the embodiment of the present invention, a possible implementation form of the second weighting matrix is as follows:
Figure PCTCN2016078108-appb-000010
Figure PCTCN2016078108-appb-000010
采用上述第二加权矩阵,可将所述多个UE的数据映射到不同的波束上进行传输,其中,第一波束、第二波束、第三波束和第四波束与AAS中的双极化天线之间的映射关系如图5所示。The data of the multiple UEs may be mapped to different beams for transmission by using the foregoing second weighting matrix, where the first beam, the second beam, the third beam, and the fourth beam are dual-polarized antennas in the AAS. The mapping relationship between them is shown in Figure 5.
本发明实施例提供的方案,尤其适用于高负荷场景,负荷越高,多用户(MU)配对的概率越大,并且小区的平均吞吐量会明显增大。有效增益来源于多用户的空分复用增益。本发明实施例提供的方案能够获取较大的空间复用增益,而通过对不同极化方向的天线设置不同的下倾角,使得内外圈的覆盖范围隔离开,因此,内外波束之间的干扰也较小。The solution provided by the embodiment of the present invention is especially applicable to a high-load scenario. The higher the load, the greater the probability of multi-user (MU) pairing, and the average throughput of the cell is significantly increased. The effective gain is derived from the multi-user spatial division multiplexing gain. The solution provided by the embodiment of the present invention can obtain a large spatial multiplexing gain, and by setting different downtilt angles for antennas with different polarization directions, the coverage of the inner and outer rings is isolated, and therefore, the interference between the inner and outer beams is also Smaller.
本发明实施例中,除了上述图3所示的实施例中所描述的采用四波束传输的方式进行数据传输外,所述基站还可以根据网络负荷情况,如资源块(Resource Block,RB)使用情况,选择两波束传输的方式进行数据传输。 In the embodiment of the present invention, in addition to the data transmission using the four-beam transmission manner described in the foregoing embodiment shown in FIG. 3, the base station may also be used according to a network load condition, such as a resource block (Resource Block, RB). In the case, the two-beam transmission method is selected for data transmission.
该方式下,所述基站在小区中所选择的多个UE包括第五UE和第六UE,其中,所述第五UE处于第一波束或第二波束覆盖范围内,所述第六UE处于第三波束或第四波束覆盖范围内;所述第一波束和所述第二波束属于有源天线系统AAS第一极化方向的波束,所述第三波束和所述第四波束属于所述AAS第二极化方向的波束;所述第一极化方向的波束具有第一下倾角,所述第二极化方向的波束具有第二下倾角。In this manner, the multiple UEs selected by the base station in the cell include a fifth UE and a sixth UE, where the fifth UE is in a first beam or a second beam coverage, and the sixth UE is in the a third beam or a fourth beam coverage; the first beam and the second beam belong to a beam of a first polarization direction of the active antenna system AAS, and the third beam and the fourth beam belong to the A beam in the second polarization direction of the AAS; the beam in the first polarization direction has a first downtilt angle, and the beam in the second polarization direction has a second downtilt angle.
该方式下,为了充分利用波束进行数据传输,所述基站通过所述第一波束和所述第二波束,与所述第五UE进行数据传输,以增强所述第五UE的信号强度,具体处理过程如下:In this mode, in order to make full use of the beam for data transmission, the base station performs data transmission with the fifth UE by using the first beam and the second beam to enhance the signal strength of the fifth UE. The process is as follows:
所述基站根据第五等效预编码矩阵对所述第五UE的数据进行预编码处理,其中,所述第五等效预编码矩阵为第五预编码矩阵与设定的第三加权矩阵相乘得到的矩阵,所述第五预编码矩阵为码本集合中秩为2的预编码矩阵;The base station performs precoding processing on the data of the fifth UE according to the fifth equivalent precoding matrix, where the fifth equivalent precoding matrix is the fifth precoding matrix and the set third weight matrix Multiplying the obtained matrix, the fifth precoding matrix is a precoding matrix of rank 2 in the codebook set;
所述基站将预编码处理后的数据,映射到所述第一波束和第二波束上进行传输。The base station maps the pre-coded data to the first beam and the second beam for transmission.
其中,第三加权矩阵的一种可能的实现形式为:
Figure PCTCN2016078108-appb-000011
Among them, one possible implementation form of the third weighting matrix is:
Figure PCTCN2016078108-appb-000011
基于上述第三加权矩阵的实现形式,相应的,若第五预编码矩阵为码本集合中PMI为2的预编码矩阵,则第五等效预编码矩阵具体为:
Figure PCTCN2016078108-appb-000012
根据得到的第五等效预编码矩阵可知,所述第五UE的数据在波束0和波束1上传输;相应的,可认为位于波束0和波束1覆盖范围内的UE可以使用PMI2进行测量。
Based on the implementation form of the foregoing third weighting matrix, if the fifth precoding matrix is a precoding matrix with a PMI of 2 in the codebook set, the fifth equivalent precoding matrix is specifically:
Figure PCTCN2016078108-appb-000012
According to the obtained fifth equivalent precoding matrix, the data of the fifth UE is transmitted on beam 0 and beam 1; correspondingly, UEs located within the coverage of beam 0 and beam 1 can be considered to be measured using PMI2.
若第五预编码矩阵为码本集合中PMI为8的预编码矩阵,则第五等效预 编码矩阵具体为:
Figure PCTCN2016078108-appb-000013
根据得到的第五等效预编码矩阵可知,所述第五UE的数据在波束0和波束1上传输;相应的,可认为位于波束0和波束1覆盖范围内的UE可以使用PMI8进行测量。
If the fifth precoding matrix is a precoding matrix with a PMI of 8 in the codebook set, the fifth equivalent precoding matrix is specifically:
Figure PCTCN2016078108-appb-000013
According to the obtained fifth equivalent precoding matrix, the data of the fifth UE is transmitted on the beam 0 and the beam 1; correspondingly, the UE located in the coverage of the beam 0 and the beam 1 can be considered to be measured by using the PMI 8.
若第一预编码矩阵为码本集合中PMI为12的预编码矩阵,则第五等效预编码矩阵具体为:
Figure PCTCN2016078108-appb-000014
根据得到的第五等效预编码矩阵可知,所述第五UE的数据在波束2和波束3上传输;相应的,可认为位于波束2和波束3覆盖范围内的UE可以使用PMI8进行测量。
If the first precoding matrix is a precoding matrix with a PMI of 12 in the codebook set, the fifth equivalent precoding matrix is specifically:
Figure PCTCN2016078108-appb-000014
According to the obtained fifth equivalent precoding matrix, the data of the fifth UE is transmitted on the beam 2 and the beam 3; correspondingly, the UE located in the coverage of the beam 2 and the beam 3 can be regarded as being measured by using the PMI 8.
若第五预编码矩阵为码本集合中PMI为15的预编码矩阵,则第五等效预编码矩阵具体为:
Figure PCTCN2016078108-appb-000015
根据得到的第五等效预编码矩阵可知,所述第五UE的数据在波束2和波束3上传输;相应的,可认为位于波束2和波束3覆盖范围内的UE可以使用PMI8进行测量。
If the fifth precoding matrix is a precoding matrix with a PMI of 15 in the codebook set, the fifth equivalent precoding matrix is specifically:
Figure PCTCN2016078108-appb-000015
According to the obtained fifth equivalent precoding matrix, the data of the fifth UE is transmitted on the beam 2 and the beam 3; correspondingly, the UE located in the coverage of the beam 2 and the beam 3 can be regarded as being measured by using the PMI 8.
从上述实施例可以看出,根据所述第五等效预编码矩阵,不仅可获取所述第五UE的数据使用所述第一波束和所述第二波束传输,还可以获取所述第三波束和所述第四波束上的数据对所述第五UE的干扰情况。As can be seen from the above embodiment, according to the fifth equivalent precoding matrix, not only the data of the fifth UE but also the first beam and the second beam transmission may be acquired, and the third may be acquired. The interference condition of the beam and the data on the fourth beam to the fifth UE.
该方式下,所述基站通过所述第三波束和所述第四波束,与所述第六UE进行数据传输的处理过程,与上述所述第五UE的处理过程类似,具体如下:In this manner, the process of performing data transmission with the sixth UE by using the third beam and the fourth beam by the base station is similar to the processing procedure of the fifth UE, as follows:
所述基站先根据第六等效预编码矩阵对所述第六UE的数据进行预编码处理,再将预编码处理后的数据映射到所述第三波束和所述第四波束上进行传输,其中,所述第六等效预编码矩阵为第六预编码矩阵与所述第三加权矩阵相乘得到的矩阵,所述第六预编码矩阵为码本集合中秩为2的预编码矩阵。The base station performs precoding processing on the data of the sixth UE according to the sixth equivalent precoding matrix, and then maps the precoded data to the third beam and the fourth beam for transmission. The sixth equivalent precoding matrix is a matrix obtained by multiplying a sixth precoding matrix and the third weighting matrix, and the sixth precoding matrix is a precoding matrix with a rank of 2 in the codebook set.
本发明实施例中,所述基站可以灵活选择四波束传输方式和两波束传输 方式来传输数据或信令。例如,在网络负荷小于设定阈值时,选择两波束传输方式传输数据或信令,以避免由于存在较多的空闲波束而导致的波束资源浪费问题;在网络负荷大于或等于设定阈值时,选择四波束传输方式传输数据或信令,以减少网络负荷。In the embodiment of the present invention, the base station can flexibly select a four-beam transmission mode and two beam transmissions. Way to transmit data or signaling. For example, when the network load is less than the set threshold, the two-beam transmission mode is selected to transmit data or signaling to avoid the problem of wasted beam resources due to the presence of more idle beams; when the network load is greater than or equal to the set threshold, Four-beam transmission mode is selected to transmit data or signaling to reduce network load.
基于上述任一实施例,可选的,本发明实施例中还可以采用90°电桥矩阵对所述不同UE的预编码处理后的数据进行加权处理,从而实现不同极化方向的天线之间的功率共享。具体的,所述基站将所述多个UE的数据,分别映射到不同极化方向的波束上进行传输时,具体处理过程如下:Based on any of the foregoing embodiments, optionally, in the embodiment of the present invention, the pre-coded data of the different UEs may be weighted by using a 90° bridge matrix, thereby implementing antennas with different polarization directions. Power sharing. Specifically, when the base station maps data of the multiple UEs to beams of different polarization directions for transmission, the specific processing procedure is as follows:
所述基站根据设定的90°电桥矩阵,分别对所述多个UE的预编码处理后的数据进行加权处理,并将加权处理后的数据分别映射到不同极化方向的波束上进行传输。The base station performs weighting processing on the pre-coded data of the multiple UEs according to the set 90° bridge matrix, and maps the weighted processed data to beams of different polarization directions for transmission. .
具体的,所述基站先根据所述多个UE对应的等效预编码矩阵,分别对所述多个UE的数据进行预编码处理,以将所述多个UE的数据映射到相应的天线端口上;然后,根据
Figure PCTCN2016078108-appb-000016
对所述多个UE的预编码处理后的数据进行虚拟波束变换,以将所述多个UE的数据映射到不同极化方向的天线上;接着,根据所述90°电桥矩阵,对所述多个UE的虚拟波束变换处理后的数据进行第一加权处理,以使不同极化方向的天线的功率相同;接着,对所述多个UE的第一加权处理的数据进行功率放大处理;接着,根据所述90°电桥矩阵的逆矩阵,对所述多个UE的功率放大处理后的数据进行第二加权处理;最后,将所述多个UE的第二加权处理的数据,分别映射到不同波束上进行传输。
Specifically, the base station performs precoding processing on the data of the multiple UEs according to the equivalent precoding matrix corresponding to the multiple UEs, so as to map data of the multiple UEs to corresponding antenna ports. On; then, according to
Figure PCTCN2016078108-appb-000016
Performing virtual beam transformation on the pre-coded data of the multiple UEs to map data of the multiple UEs to antennas of different polarization directions; and then, according to the 90° bridge matrix, The data of the virtual beam transform processing of the plurality of UEs is subjected to a first weighting process to make the powers of the antennas of different polarization directions the same; and then, the data of the first weighting process of the plurality of UEs is subjected to power amplification processing; And performing, according to the inverse matrix of the 90° bridge matrix, performing second weighting processing on the data after the power amplification processing of the multiple UEs; and finally, performing data of the second weighting processing of the multiple UEs, respectively Map to different beams for transmission.
其中,所述90°电桥矩阵为
Figure PCTCN2016078108-appb-000017
Wherein the 90° bridge matrix is
Figure PCTCN2016078108-appb-000017
在图2所示的实施例中,为了实现不同极化方向的波束的功率均衡和共享,一种可选的实现方式中,所述基站根据所述90°电桥矩阵,对所述第一UE的预编码处理后的数据进行加权处理,将所述第一UE的处理后的数据,映射到所述第一波束上进行传输;根据所述90°电桥矩阵,对所述第二UE 的预编码处理后的数据进行加权处理,将所述第二UE的处理后的数据,映射到所述第二波束上进行传输;根据所述90°电桥矩阵,对所述第三UE的预编码处理后的数据进行加权处理,将所述第三UE的处理后的数据,映射到所述第三波束上进行传输;以及根据所述90°电桥矩阵,对所述第四UE的预编码处理后的数据进行加权处理,将所述第四UE的处理后的数据,映射到所述第四波束上进行传输。In an embodiment shown in FIG. 2, in order to implement power balancing and sharing of beams in different polarization directions, in an optional implementation manner, the base station performs the first according to the 90° bridge matrix. The pre-coded data of the UE is weighted, and the processed data of the first UE is mapped to the first beam for transmission; according to the 90° bridge matrix, the second UE is used. Performing weighting processing on the pre-coded data, mapping the processed data of the second UE to the second beam for transmission; according to the 90° bridge matrix, for the third UE Performing a weighting process on the pre-coded data, mapping the processed data of the third UE to the third beam for transmission; and, according to the 90° bridge matrix, to the fourth UE The pre-coded data is weighted, and the processed data of the fourth UE is mapped to the fourth beam for transmission.
需要说明的是,两波束传输方式中,采用90°电桥矩阵对所述第五UE的预编码处理后的数据、以及所述第六UE的预编码处理后的数据的处理过程,与上述四波束传输方式中对所述第一UE的处理过程类似,此次不再一一举例说明。It should be noted that, in the two-beam transmission mode, the data of the pre-coded data of the fifth UE and the data of the pre-coded data of the sixth UE are processed by using a 90° bridge matrix, and the foregoing The processing procedure for the first UE in the four-beam transmission mode is similar, and will not be exemplified one by one.
下面结合图6,对本发明实施例中所述基站对所述多个UE的数据进行处理流程进行详细说明。The processing flow of the data of the multiple UEs by the base station in the embodiment of the present invention is described in detail below with reference to FIG. 6 .
实施例三、如图6所示,所述多个UE为任一UE的数据传输为例,其中,该UE的数据序列为s1,处理过程如下:所述基站采用等效预编码矩阵,记为
Figure PCTCN2016078108-appb-000018
对数据序列s1进行预编码,以将该数据序列s1映射到不同天线端口上,本实施例以两个天线端口为例进行说明,记为p1和p2;然后,所述基站对预编码处理后的数据进行虚拟波束变换,以将预编码处理后的数据映射到不同极化方向的天线上,不同的极化方向分别记为q1和q2,其中虚拟波束变换使用的矩阵为
Figure PCTCN2016078108-appb-000019
接着,所述基站采用设定的90°电桥矩阵对虚拟波束变换处理后的数据进行第一次加权处理,得到的序列记为
Figure PCTCN2016078108-appb-000020
Figure PCTCN2016078108-appb-000021
接着,所述基站对
Figure PCTCN2016078108-appb-000022
进行功率放大处理,并采用90°电桥矩阵的逆矩阵进行变换,得到的序列记为
Figure PCTCN2016078108-appb-000023
最后,所述基 站将
Figure PCTCN2016078108-appb-000024
映射到波束A或波束B上进行传输。
Embodiment 3 As shown in FIG. 6, the data transmission of any UE is taken as an example, wherein the data sequence of the UE is s1, and the processing procedure is as follows: the base station adopts an equivalent precoding matrix, and records for
Figure PCTCN2016078108-appb-000018
The data sequence s1 is pre-coded to map the data sequence s1 to different antenna ports. In this embodiment, two antenna ports are taken as an example, which are denoted as p1 and p2. Then, the base station performs pre-coding processing. The data is subjected to virtual beam transformation to map the pre-coded data to antennas of different polarization directions, and different polarization directions are respectively recorded as q1 and q2, wherein the matrix used by the virtual beam transformation is
Figure PCTCN2016078108-appb-000019
Then, the base station performs the first weighting process on the data after the virtual beam transform processing by using the set 90° bridge matrix, and the obtained sequence is recorded as
Figure PCTCN2016078108-appb-000020
which is
Figure PCTCN2016078108-appb-000021
Then, the base station pair
Figure PCTCN2016078108-appb-000022
Perform power amplification processing and transform using the inverse matrix of the 90° bridge matrix, and the resulting sequence is recorded as
Figure PCTCN2016078108-appb-000023
Finally, the base station will
Figure PCTCN2016078108-appb-000024
Map to beam A or beam B for transmission.
其中,由于90°电桥矩阵为U矩阵,即
Figure PCTCN2016078108-appb-000025
Figure PCTCN2016078108-appb-000026
因此,在轮询完码本集合中所有秩为2的预编码矩阵
Figure PCTCN2016078108-appb-000027
后,均可以使不同极化方向的天线的功率相等,即|v1|=|v2|,从而达到功率均衡和共享的目的。
Wherein, since the 90° bridge matrix is a U matrix,
Figure PCTCN2016078108-appb-000025
then
Figure PCTCN2016078108-appb-000026
Therefore, all precoding matrices with a rank of 2 in the codebook set are polled.
Figure PCTCN2016078108-appb-000027
After that, the powers of the antennas with different polarization directions can be equal, that is, |v1|=|v2|, thereby achieving the purpose of power balance and sharing.
举例说明,遍历有限有限的c11和c21的组合,其结果如表1所示:For example, the finite finite combination of c 11 and c 21 is traversed, and the results are shown in Table 1:
Figure PCTCN2016078108-appb-000028
Figure PCTCN2016078108-appb-000028
表1Table 1
可以看出,不论预编码矩阵的形式如何,均实现了功率的均衡,同时,当预编码矩阵为[1 1]T和[1 -1]T时,两个极化方向的天线的功率完全集中到了一个极化方向上,而当预编码矩阵为[1 j]T和[1 -j]T时,两个极化方向的天线能够共享功率,因此通过电桥矩阵进行加权的方式,可以使不同极化方向的天线间的功率得到共享。It can be seen that the power equalization is achieved regardless of the form of the precoding matrix. Meanwhile, when the precoding matrix is [1 1] T and [1 -1] T , the power of the antennas in the two polarization directions is completely Focused on one polarization direction, and when the precoding matrix is [1 j] T and [1 -j] T , the antennas of the two polarization directions can share power, so the weighting by the bridge matrix can The power between the antennas in different polarization directions is shared.
需要说明的是,本发明实施例中以AAS包括8根双极化天线为例进行说明的,本发明实施例中不限定AAS所包含的双极化天线的数量,其他数量的双极化天线(如AAS包括16根双极化天线)的场景下,数据传输的处理过程与本发明实施例类似,此处不再一一举例说明。It should be noted that, in the embodiment of the present invention, the AAS includes eight dual-polarized antennas as an example. In the embodiment of the present invention, the number of dual-polarized antennas included in the AAS is not limited, and other numbers of dual-polarized antennas are used. In the scenario of the AAS including the 16 dual-polarized antennas, the processing of the data transmission is similar to the embodiment of the present invention, and is not illustrated here.
上述方法处理流程可以用软件程序实现,该软件程序可以存储在存储介 质中,当存储的软件程序被调用时,执行上述方法步骤。The above method processing flow can be implemented by a software program, which can be stored in the storage medium. In the quality, when the stored software program is called, the above method steps are performed.
基于同一发明构思,本发明实施例四中,提供了一种数据传输装置,如图7所示,所述装置包括:选择模块71和处理模块72,其中,所述选择模块71和所述处理模块72可执行图1所示的实施例、图2所示的实施例、或者图6所示的实施例中描述的方法。下面以所述选择模块71和所述处理模块72执行图2所示的实施例中描述的方法为例,对本发明实施例提供的一种数据传输装置进行说明。具体如下:Based on the same inventive concept, in a fourth embodiment of the present invention, a data transmission apparatus is provided. As shown in FIG. 7, the apparatus includes: a selection module 71 and a processing module 72, wherein the selection module 71 and the processing Module 72 may perform the embodiment illustrated in FIG. 1, the embodiment illustrated in FIG. 2, or the method described in the embodiment illustrated in FIG. 6. The data transmission device provided by the embodiment of the present invention will be described below by taking the method described in the embodiment shown in FIG. 2 by the selection module 71 and the processing module 72 as an example. details as follows:
选择模块71,用于选择小区中的多个用户设备UE,所述多个UE包括第一UE、第二UE、第三UE和第四UE;其中,所述第一UE处于第一波束覆盖范围内,所述第二UE处于第二波束覆盖范围内,所述第三UE处于第三波束覆盖范围内,且所述第四UE处于第四波束覆盖范围内;所述第一波束和所述第二波束属于有源天线系统AAS第一极化方向的波束,所述第三波束和所述第四波束属于所述AAS第二极化方向的波束;所述第一极化方向的波束具有第一下倾角,所述第二极化方向的波束具有第二下倾角,其中所述装置通过所述AAS覆盖所述小区;a selection module 71, configured to select a plurality of user equipment UEs in a cell, where the multiple UEs include a first UE, a second UE, a third UE, and a fourth UE, where the first UE is in a first beam coverage In the range, the second UE is in the second beam coverage, the third UE is in the third beam coverage, and the fourth UE is in the fourth beam coverage; the first beam and the The second beam belongs to a beam in a first polarization direction of the active antenna system AAS, and the third beam and the fourth beam belong to a beam in a second polarization direction of the AAS; the beam in the first polarization direction Having a first downtilt angle, the beam of the second polarization direction having a second downtilt angle, wherein the device covers the cell through the AAS;
处理模块72,用于在相同的时频资源上,通过所述第一波束与所述第一UE进行数据传输,通过所述第二波束与所述第二UE进行数据传输,通过所述第三波束与所述第三UE进行数据传输,以及通过所述第四波束与所述第四UE进行数据传输。The processing module 72 is configured to perform data transmission with the first UE by using the first beam, and perform data transmission with the second UE by using the second beam, by using the first beam. The three beams perform data transmission with the third UE, and perform data transmission with the fourth UE by using the fourth beam.
一种可能的实现方式中,所述选择模块71具体用于:In a possible implementation manner, the selecting module 71 is specifically configured to:
当所述小区的小区负载超过负载门限时,选择所述多个UE。When the cell load of the cell exceeds a load threshold, the multiple UEs are selected.
一种可能的实现方式中,所述选择模块71具体用于:In a possible implementation manner, the selecting module 71 is specifically configured to:
获取所述多个UE的信号强度;Obtaining signal strengths of the multiple UEs;
根据所述多个UE的信号强度,确定出所述多个UE的信号强度所属的信号强度区间;Determining, according to signal strengths of the multiple UEs, a signal strength interval to which the signal strengths of the multiple UEs belong;
根据信号强度区间与波束覆盖范围的对应关系,选择第一波束覆盖范围内的第一UE、第二波束覆盖范围内的第二UE、第三波束覆盖范围内的第三 UE以及第四波束覆盖范围内的第四UE。Selecting, according to the correspondence between the signal strength interval and the beam coverage range, the first UE in the first beam coverage, the second UE in the second beam coverage, and the third in the third beam coverage range. The UE and the fourth UE within the fourth beam coverage.
可选的,本发明实施例提供的装置还包括:获取模块,用于获取所述多个UE的信号强度,例如,获取模块分别统计所述多个UE在第一波束、第二波束、第三波束以及第四波束上的探测参考信号(Sounding Reference Signal,简称SRS)的上行RSRP(UL RSRP)值。Optionally, the apparatus provided by the embodiment of the present invention further includes: an acquiring module, configured to acquire signal strengths of the multiple UEs, for example, the acquiring module separately collects statistics, where the multiple UEs are in the first beam, the second beam, and the first The uplink RSRP (UL RSRP) value of the Sounding Reference Signal (SRS) on the three beams and the fourth beam.
相应的,所述选择模块71通过所述获取模块获取所述多个UE的信号强度;根据所述多个UE的信号强度,确定出所述多个UE的信号强度所属的信号强度区间;根据信号强度区间与波束覆盖范围的对应关系,选择第一波束覆盖范围内的第一UE、第二波束覆盖范围内的第二UE、第三波束覆盖范围内的第三UE以及第四波束覆盖范围内的第四UE。Correspondingly, the selecting module 71 acquires the signal strengths of the multiple UEs by using the acquiring module, and determines, according to the signal strengths of the multiple UEs, a signal strength interval to which the signal strengths of the multiple UEs belong; Corresponding relationship between the signal strength interval and the beam coverage range, selecting the first UE in the first beam coverage, the second UE in the second beam coverage, the third UE in the third beam coverage, and the fourth beam coverage The fourth UE within.
一种可能的实现方式中,所述处理模块72具体用于:In a possible implementation manner, the processing module 72 is specifically configured to:
根据第一等效预编码矩阵对所述第一UE的数据进行预编码处理,所述第一等效预编码矩阵为第一预编码矩阵与第一加权矩阵相乘得到的矩阵,所述第一预编码矩阵为码本集合中秩为2的预编码矩阵;Precoding the data of the first UE according to the first equivalent precoding matrix, where the first equivalent precoding matrix is a matrix obtained by multiplying the first precoding matrix by the first weighting matrix, where A precoding matrix is a precoding matrix with a rank of 2 in the codebook set;
将预编码处理后的数据,映射到所述第一波束上进行传输;Mapping the pre-coded data to the first beam for transmission;
其中,所述第一加权矩阵为
Figure PCTCN2016078108-appb-000029
Wherein the first weighting matrix is
Figure PCTCN2016078108-appb-000029
一种可能的实现方式中,所述处理模块72具体用于:In a possible implementation manner, the processing module 72 is specifically configured to:
根据第二等效预编码矩阵对所述第二UE的数据进行预编码处理,所述第二等效预编码矩阵为第二预编码矩阵与所述第一加权矩阵相乘得到的矩阵,所述第二预编码矩阵为码本集合中秩为2的预编码矩阵;Performing precoding processing on the data of the second UE according to the second equivalent precoding matrix, where the second equivalent precoding matrix is a matrix obtained by multiplying the second precoding matrix by the first weighting matrix, The second precoding matrix is a precoding matrix with a rank of 2 in the codebook set;
将预编码处理后的数据,映射到所述第二波束上进行传输。The pre-coded data is mapped onto the second beam for transmission.
一种可能的实现方式中,所述处理模块72具体用于:In a possible implementation manner, the processing module 72 is specifically configured to:
根据第三等效预编码矩阵对所述第三UE的数据进行预编码处理,所述第三等效预编码矩阵为第三预编码矩阵与所述第一加权矩阵相乘得到的矩阵, 所述第三预编码矩阵为码本集合中秩为2的预编码矩阵;Performing precoding processing on the data of the third UE according to the third equivalent precoding matrix, where the third equivalent precoding matrix is a matrix obtained by multiplying the third precoding matrix by the first weighting matrix, The third precoding matrix is a precoding matrix with a rank of 2 in the codebook set;
将预编码处理后的数据,映射到所述第三波束上进行传输。The pre-coded data is mapped onto the third beam for transmission.
一种可能的实现方式中,所述处理模块72具体用于:In a possible implementation manner, the processing module 72 is specifically configured to:
根据第四等效预编码矩阵对所述第四UE的数据进行预编码处理,所述第四等效预编码矩阵为第四预编码矩阵与所述第一加权矩阵相乘得到的矩阵,所述第四预编码矩阵为码本集合中秩为2的预编码矩阵;Performing precoding processing on the data of the fourth UE according to the fourth equivalent precoding matrix, where the fourth equivalent precoding matrix is a matrix obtained by multiplying the fourth precoding matrix by the first weighting matrix, The fourth precoding matrix is a precoding matrix with a rank of 2 in the codebook set;
将预编码处理后的数据,映射到所述第四波束上进行传输。The pre-coded data is mapped onto the fourth beam for transmission.
一种可能的实现方式中,所述处理模块72具体用于:In a possible implementation manner, the processing module 72 is specifically configured to:
根据设定的90°电桥矩阵,对所述第一UE的预编码处理后的数据进行加权处理,将所述第一UE的处理后的数据,映射到所述第一波束上进行传输;根据所述90°电桥矩阵,对所述第二UE的预编码处理后的数据进行加权处理,将所述第二UE的处理后的数据,映射到所述第二波束上进行传输;根据所述90°电桥矩阵,对所述第三UE的预编码处理后的数据进行加权处理,将所述第三UE的处理后的数据,映射到所述第三波束上进行传输;以及根据所述90°电桥矩阵,对所述第四UE的预编码处理后的数据进行加权处理,将所述第四UE的处理后的数据,映射到所述第四波束上进行传输。And performing weighting processing on the pre-coded data of the first UE according to the set 90° bridge matrix, and mapping the processed data of the first UE to the first beam for transmission; And performing weighting processing on the pre-coded data of the second UE according to the 90° bridge matrix, and mapping the processed data of the second UE to the second beam for transmission; The 90° bridge matrix performs weighting processing on the pre-coded data of the third UE, and maps the processed data of the third UE to the third beam for transmission; The 90° bridge matrix performs weighting processing on the pre-coded data of the fourth UE, and maps the processed data of the fourth UE to the fourth beam for transmission.
其中,本实施例中的90°电桥矩阵具体参见实施例二中的相关描述,此处不再赘述。For details of the 90° bridge matrix in this embodiment, refer to the related description in the second embodiment, and details are not described herein again.
基于同一发明构思,本发明实施例五中,提供了一种基站,包括图7所示的实施例中描述的装置。Based on the same inventive concept, in a fifth embodiment of the present invention, a base station is provided, including the apparatus described in the embodiment shown in FIG.
本实施例中的基站(例如,接入点)可以是指接入网中在空中接口上通过一个或多个扇区与无线终端通信的设备。基站可用于将收到的空中帧与IP分组进行相互转换,作为无线终端与接入网的其余部分之间的路由器,其中接入网的其余部分可包括网际协议(IP)网络。基站还可协调对空中接口的属性管理。例如,基站可以是GSM或CDMA中的基站(BTS,Base Transceiver Station),也可以是WCDMA中的基站(NodeB),还可以是LTE中的演进型基站(NodeB或eNB或e-NodeB,evolutional Node B),本申请并不限定。 A base station (e.g., an access point) in this embodiment may refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface. The base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network. The base station can also coordinate attribute management of the air interface. For example, the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), this application is not limited.
下面结合优选的硬件结构,对本发明实施例提供的基站的结构、处理方式进行说明。如图8所示,本发明实施例五中,提供了一种基站,包括收发器81、以及与该收发器81连接的至少一个处理器82,其中:The structure and processing manner of the base station provided by the embodiment of the present invention are described below in conjunction with the preferred hardware structure. As shown in FIG. 8, in a fifth embodiment of the present invention, a base station is provided, including a transceiver 81, and at least one processor 82 connected to the transceiver 81, wherein:
在基站运行时,处理器82读取存储器83中的程序,执行下列过程:While the base station is running, the processor 82 reads the program in the memory 83 and performs the following process:
选择小区中的多个用户设备UE,所述多个UE包括第一UE、第二UE、第三UE和第四UE;其中,所述第一UE处于第一波束覆盖范围内,所述第二UE处于第二波束覆盖范围内,所述第三UE处于第三波束覆盖范围内,且所述第四UE处于第四波束覆盖范围内;所述第一波束和所述第二波束属于有源天线系统AAS第一极化方向的波束,所述第三波束和所述第四波束属于所述AAS第二极化方向的波束;所述第一极化方向的波束具有第一下倾角,所述第二极化方向的波束具有第二下倾角,其中所述装置通过所述AAS覆盖所述小区;Selecting a plurality of user equipment UEs in the cell, where the multiple UEs include a first UE, a second UE, a third UE, and a fourth UE, where the first UE is in a first beam coverage range, where the The second UE is in the second beam coverage, the third UE is in the third beam coverage, and the fourth UE is in the fourth beam coverage; the first beam and the second beam belong to a beam in a first polarization direction of the source antenna system AAS, the third beam and the fourth beam belong to a beam in a second polarization direction of the AAS; the beam in the first polarization direction has a first downtilt angle, The beam in the second polarization direction has a second downtilt angle, wherein the device covers the cell through the AAS;
在相同的时频资源上,通过所述第一波束与所述第一UE进行数据传输,通过所述第二波束与所述第二UE进行数据传输,通过所述第三波束与所述第三UE进行数据传输,以及通过所述第四波束与所述第四UE进行数据传输;Data transmission with the first UE by using the first beam, data transmission with the second UE by using the second beam, and the third beam and the first Transmitting, by the third UE, data transmission, and performing data transmission with the fourth UE by using the fourth beam;
收发器81,用于在处理器82的控制下接收和发送数据。The transceiver 81 is configured to receive and transmit data under the control of the processor 82.
其中,在图8中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器82代表的一个或多个处理器和存储器83代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发器81可以是多个元件,即包括发送机和收发器,提供用于在传输介质上与各种其他装置通信的单元。处理器82负责管理总线架构和通常的处理,存储器83可以存储处理器82在执行操作时所使用的数据。Here, in FIG. 8, the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 82 and various circuits of memory represented by memory 83. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. Transceiver 81 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium. The processor 82 is responsible for managing the bus architecture and general processing, and the memory 83 can store data used by the processor 82 in performing the operations.
一种可能的实现方式中,处理器在选择小区中的多个UE时,具体执行:In a possible implementation manner, when the processor selects multiple UEs in the cell, the specific execution is:
当所述小区的小区负载超过负载门限时,选择所述多个UE。When the cell load of the cell exceeds a load threshold, the multiple UEs are selected.
一种可能的实现方式中,处理器在选择小区中的多个UE时,具体执行: In a possible implementation manner, when the processor selects multiple UEs in the cell, the specific execution is:
获取所述多个UE的信号强度;Obtaining signal strengths of the multiple UEs;
根据所述多个UE的信号强度,确定出所述多个UE的信号强度所属的信号强度区间;Determining, according to signal strengths of the multiple UEs, a signal strength interval to which the signal strengths of the multiple UEs belong;
根据信号强度区间与波束覆盖范围的对应关系,选择第一波束覆盖范围内的第一UE、第二波束覆盖范围内的第二UE、第三波束覆盖范围内的第三UE以及第四波束覆盖范围内的第四UE。Selecting, according to the correspondence between the signal strength interval and the beam coverage range, the first UE in the first beam coverage, the second UE in the second beam coverage, the third UE in the third beam coverage, and the fourth beam coverage. The fourth UE in the range.
一种可能的实现方式中,处理器在通过所述第一波束与所述第一UE进行数据传输时,具体执行:In a possible implementation, when the processor performs data transmission with the first UE by using the first beam, the processor specifically performs:
根据第一等效预编码矩阵对所述第一UE的数据进行预编码处理,所述第一等效预编码矩阵为第一预编码矩阵与第一加权矩阵相乘得到的矩阵,所述第一预编码矩阵为码本集合中秩为2的预编码矩阵;Precoding the data of the first UE according to the first equivalent precoding matrix, where the first equivalent precoding matrix is a matrix obtained by multiplying the first precoding matrix by the first weighting matrix, where A precoding matrix is a precoding matrix with a rank of 2 in the codebook set;
将预编码处理后的数据,映射到所述第一波束上进行传输;Mapping the pre-coded data to the first beam for transmission;
其中,所述第一加权矩阵为
Figure PCTCN2016078108-appb-000030
Wherein the first weighting matrix is
Figure PCTCN2016078108-appb-000030
一种可能的实现方式中,处理器在通过所述第二波束与所述第二UE进行数据传输时,具体执行:In a possible implementation, when the processor performs data transmission with the second UE by using the second beam, the processor specifically performs:
根据第二等效预编码矩阵对所述第二UE的数据进行预编码处理,所述第二等效预编码矩阵为第二预编码矩阵与所述第一加权矩阵相乘得到的矩阵,所述第二预编码矩阵为码本集合中秩为2的预编码矩阵;Performing precoding processing on the data of the second UE according to the second equivalent precoding matrix, where the second equivalent precoding matrix is a matrix obtained by multiplying the second precoding matrix by the first weighting matrix, The second precoding matrix is a precoding matrix with a rank of 2 in the codebook set;
将预编码处理后的数据,映射到所述第二波束上进行传输。The pre-coded data is mapped onto the second beam for transmission.
一种可能的实现方式中,处理器在通过所述第三波束与所述第三UE进行数据传输时,具体执行:In a possible implementation, when the processor performs data transmission with the third UE by using the third beam, the processor specifically performs:
根据第三等效预编码矩阵对所述第三UE的数据进行预编码处理,所述第三等效预编码矩阵为第三预编码矩阵与所述第一加权矩阵相乘得到的矩阵,所述第三预编码矩阵为码本集合中秩为2的预编码矩阵; Performing precoding processing on the data of the third UE according to the third equivalent precoding matrix, where the third equivalent precoding matrix is a matrix obtained by multiplying the third precoding matrix by the first weighting matrix, The third precoding matrix is a precoding matrix with a rank of 2 in the codebook set;
将预编码处理后的数据,映射到所述第三波束上进行传输。The pre-coded data is mapped onto the third beam for transmission.
一种可能的实现方式中,处理器在通过所述第四波束与所述第四UE进行数据传输时,具体执行:In a possible implementation, when the processor performs data transmission with the fourth UE by using the fourth beam, the processor specifically performs:
根据第四等效预编码矩阵对所述第四UE的数据进行预编码处理,所述第四等效预编码矩阵为第四预编码矩阵与所述第一加权矩阵相乘得到的矩阵,所述第四预编码矩阵为码本集合中秩为2的预编码矩阵;Performing precoding processing on the data of the fourth UE according to the fourth equivalent precoding matrix, where the fourth equivalent precoding matrix is a matrix obtained by multiplying the fourth precoding matrix by the first weighting matrix, The fourth precoding matrix is a precoding matrix with a rank of 2 in the codebook set;
将预编码处理后的数据,映射到所述第四波束上进行传输。The pre-coded data is mapped onto the fourth beam for transmission.
一种可能的实现方式中,处理器在相同的时频资源上,通过所述第一波束与所述第一UE进行数据传输,通过所述第二波束与所述第二UE进行数据传输,通过所述第三波束与所述第三UE进行数据传输,以及通过所述第四波束与所述第四UE进行数据传输时,具体执行:In a possible implementation manner, the processor performs data transmission with the first UE by using the first beam, and performs data transmission with the second UE by using the second beam, on the same time-frequency resource. Performing data transmission with the third UE by using the third beam, and performing data transmission with the fourth UE by using the fourth beam, specifically performing:
根据设定的90°电桥矩阵,对所述第一UE的预编码处理后的数据进行加权处理,将所述第一UE的处理后的数据,映射到所述第一波束上进行传输;根据所述90°电桥矩阵,对所述第二UE的预编码处理后的数据进行加权处理,将所述第二UE的处理后的数据,映射到所述第二波束上进行传输;根据所述90°电桥矩阵,对所述第三UE的预编码处理后的数据进行加权处理,将所述第三UE的处理后的数据,映射到所述第三波束上进行传输;以及根据所述90°电桥矩阵,对所述第四UE的预编码处理后的数据进行加权处理,将所述第四UE的处理后的数据,映射到所述第四波束上进行传输。And performing weighting processing on the pre-coded data of the first UE according to the set 90° bridge matrix, and mapping the processed data of the first UE to the first beam for transmission; And performing weighting processing on the pre-coded data of the second UE according to the 90° bridge matrix, and mapping the processed data of the second UE to the second beam for transmission; The 90° bridge matrix performs weighting processing on the pre-coded data of the third UE, and maps the processed data of the third UE to the third beam for transmission; The 90° bridge matrix performs weighting processing on the pre-coded data of the fourth UE, and maps the processed data of the fourth UE to the fourth beam for transmission.
其中,本实施例中的90°电桥矩阵具体参见实施例二中的相关描述,此处不再赘述。For details of the 90° bridge matrix in this embodiment, refer to the related description in the second embodiment, and details are not described herein again.
本领域内的技术人员应明白,本发明的实施例可提供为方法、系统、或计算机程序产品。因此,本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产 品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。The present invention is directed to a method, apparatus (system), and computer program according to an embodiment of the present invention. The flow chart and/or block diagram of the product is described. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
尽管已描述了本发明的优选实施例,但本领域内的技术人员一旦得知了基本创造性概念,则可对这些实施例作出另外的变更和修改。所以,所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。While the preferred embodiment of the invention has been described, it will be understood that Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and
显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。 It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims (18)

  1. 一种数据传输方法,其特征在于,所述方法包括:A data transmission method, characterized in that the method comprises:
    基站选择小区中的多个用户设备UE,所述多个UE包括第一UE、第二UE、第三UE和第四UE;其中,所述第一UE处于第一波束覆盖范围内,所述第二UE处于第二波束覆盖范围内,所述第三UE处于第三波束覆盖范围内,且所述第四UE处于第四波束覆盖范围内;所述第一波束和所述第二波束属于有源天线系统AAS第一极化方向的波束,所述第三波束和所述第四波束属于所述AAS第二极化方向的波束;所述第一极化方向的波束具有第一下倾角,所述第二极化方向的波束具有第二下倾角,其中所述基站通过所述AAS覆盖所述小区;The base station selects a plurality of user equipment UEs in the cell, where the multiple UEs include a first UE, a second UE, a third UE, and a fourth UE, where the first UE is in a first beam coverage range, The second UE is in the second beam coverage, the third UE is in the third beam coverage, and the fourth UE is in the fourth beam coverage; the first beam and the second beam belong to a beam of the first polarization direction of the active antenna system AAS, the third beam and the fourth beam belong to a beam of the second polarization direction of the AAS; the beam of the first polarization direction has a first downtilt angle The second polarization direction beam has a second downtilt angle, wherein the base station covers the cell by using the AAS;
    所述基站在相同的时频资源上,通过所述第一波束与所述第一UE进行数据传输,通过所述第二波束与所述第二UE进行数据传输,通过所述第三波束与所述第三UE进行数据传输,以及通过所述第四波束与所述第四UE进行数据传输。The base station performs data transmission with the first UE by using the first beam, and performs data transmission with the second UE by using the second beam on the same time-frequency resource, and the third beam is used to The third UE performs data transmission, and performs data transmission with the fourth UE by using the fourth beam.
  2. 如权利要求1所述的方法,其特征在于,所述基站选择多个UE,包括:The method according to claim 1, wherein the base station selects a plurality of UEs, including:
    当所述小区的小区负载超过负载门限时,所述基站选择所述多个UE。When the cell load of the cell exceeds a load threshold, the base station selects the multiple UEs.
  3. 如权利要求1或2所述的方法,其特征在于,所述基站选择多个UE,包括:The method according to claim 1 or 2, wherein the base station selects a plurality of UEs, including:
    所述基站获取所述多个UE的信号强度;The base station acquires signal strengths of the multiple UEs;
    所述基站根据所述多个UE的信号强度,确定出所述多个UE的信号强度所属的信号强度区间;Determining, by the base station, a signal strength interval to which the signal strengths of the multiple UEs belong according to signal strengths of the multiple UEs;
    所述基站根据信号强度区间与波束覆盖范围的对应关系,选择第一波束覆盖范围内的第一UE、第二波束覆盖范围内的第二UE、第三波束覆盖范围内的第三UE以及第四波束覆盖范围内的第四UE。The base station selects, according to the correspondence between the signal strength interval and the beam coverage range, the first UE in the first beam coverage, the second UE in the second beam coverage, the third UE in the third beam coverage, and the third The fourth UE within the coverage of the four beams.
  4. 如权利要求1-3任一项所述的方法,其特征在于,所述基站通过所述 第一波束与所述第一UE进行数据传输包括:The method according to any one of claims 1 to 3, wherein said base station passes said The first beam and the first UE perform data transmission, including:
    所述基站根据第一等效预编码矩阵对所述第一UE的数据进行预编码处理,所述第一等效预编码矩阵为第一预编码矩阵与第一加权矩阵相乘得到的矩阵,所述第一预编码矩阵为码本集合中秩为2的预编码矩阵;The base station performs precoding processing on the data of the first UE according to the first equivalent precoding matrix, where the first equivalent precoding matrix is a matrix obtained by multiplying the first precoding matrix by the first weighting matrix, The first precoding matrix is a precoding matrix with a rank of 2 in the codebook set;
    所述基站将预编码处理后的数据,映射到所述第一波束上进行传输;The base station maps the pre-coded data to the first beam for transmission;
    其中,所述第一加权矩阵为
    Figure PCTCN2016078108-appb-100001
    Wherein the first weighting matrix is
    Figure PCTCN2016078108-appb-100001
  5. 如权利要求4所述的方法,其特征在于,所述基站通过所述第二波束与所述第二UE进行数据传输,包括:The method according to claim 4, wherein the base station performs data transmission with the second UE by using the second beam, including:
    所述基站根据第二等效预编码矩阵对所述第二UE的数据进行预编码处理,所述第二等效预编码矩阵为第二预编码矩阵与所述第一加权矩阵相乘得到的矩阵,所述第二预编码矩阵为码本集合中秩为2的预编码矩阵;The base station performs precoding processing on the data of the second UE according to the second equivalent precoding matrix, where the second equivalent precoding matrix is obtained by multiplying the second precoding matrix by the first weighting matrix. a matrix, the second precoding matrix being a precoding matrix of rank 2 in the codebook set;
    所述基站将预编码处理后的数据,映射到所述第二波束上进行传输。The base station maps the pre-coded data to the second beam for transmission.
  6. 如权利要求5所述的方法,其特征在于,所述基站通过所述第三波束与所述第三UE进行数据传输,包括:The method according to claim 5, wherein the base station performs data transmission with the third UE by using the third beam, including:
    所述基站根据第三等效预编码矩阵对所述第三UE的数据进行预编码处理,所述第三等效预编码矩阵为第三预编码矩阵与所述第一加权矩阵相乘得到的矩阵,所述第三预编码矩阵为码本集合中秩为2的预编码矩阵;The base station performs precoding processing on the data of the third UE according to the third equivalent precoding matrix, where the third equivalent precoding matrix is obtained by multiplying the third precoding matrix by the first weighting matrix. a matrix, the third precoding matrix being a precoding matrix of rank 2 in the codebook set;
    所述基站将预编码处理后的数据,映射到所述第三波束上进行传输。The base station maps the pre-coded data to the third beam for transmission.
  7. 如权利要求6所述的方法,其特征在于,所述基站通过所述第四波束与所述第四UE进行数据传输,包括:The method according to claim 6, wherein the base station performs data transmission with the fourth UE by using the fourth beam, including:
    所述基站根据第四等效预编码矩阵对所述第四UE的数据进行预编码处理,所述第四等效预编码矩阵为第四预编码矩阵与所述第一加权矩阵相乘得到的矩阵,所述第四预编码矩阵为码本集合中秩为2的预编码矩阵;The base station performs precoding processing on the data of the fourth UE according to the fourth equivalent precoding matrix, where the fourth equivalent precoding matrix is obtained by multiplying the fourth precoding matrix by the first weighting matrix. a matrix, the fourth precoding matrix being a precoding matrix of rank 2 in the codebook set;
    所述基站将预编码处理后的数据,映射到所述第四波束上进行传输。 The base station maps the pre-coded data to the fourth beam for transmission.
  8. 如权利要求4-7任一项所述的方法,其特征在于,所述基站通过所述第一波束与所述第一UE进行数据传输,通过所述第二波束与所述第二UE进行数据传输,通过所述第三波束与所述第三UE进行数据传输,以及通过所述第四波束与所述第四UE进行数据传输,包括:The method according to any one of claims 4 to 7, wherein the base station performs data transmission with the first UE by using the first beam, and performs the data transmission with the second UE by using the second beam. Data transmission, data transmission with the third UE by using the third beam, and data transmission with the fourth UE by using the fourth beam, including:
    所述基站根据设定的90°电桥矩阵,对所述第一UE的预编码处理后的数据进行加权处理,将所述第一UE的处理后的数据,映射到所述第一波束上进行传输;根据所述90°电桥矩阵,对所述第二UE的预编码处理后的数据进行加权处理,将所述第二UE的处理后的数据,映射到所述第二波束上进行传输;根据所述90°电桥矩阵,对所述第三UE的预编码处理后的数据进行加权处理,将所述第三UE的处理后的数据,映射到所述第三波束上进行传输;以及根据所述90°电桥矩阵,对所述第四UE的预编码处理后的数据进行加权处理,将所述第四UE的处理后的数据,映射到所述第四波束上进行传输。The base station performs weighting processing on the pre-coded data of the first UE according to the set 90° bridge matrix, and maps the processed data of the first UE to the first beam. Transmitting, performing data processing on the pre-coded data of the second UE according to the 90° bridge matrix, and mapping the processed data of the second UE to the second beam. Transmitting, according to the 90° bridge matrix, performing weighting processing on the pre-coded data of the third UE, and mapping the processed data of the third UE to the third beam for transmission And performing weighting processing on the pre-coded data of the fourth UE according to the 90° bridge matrix, and mapping the processed data of the fourth UE to the fourth beam for transmission .
  9. 如权利要求8所述的方法,其特征在于,所述90°电桥矩阵为
    Figure PCTCN2016078108-appb-100002
    The method of claim 8 wherein said 90° bridge matrix is
    Figure PCTCN2016078108-appb-100002
  10. 一种数据传输装置,其特征在于,所述装置包括:A data transmission device, characterized in that the device comprises:
    选择模块,用于选择小区中的多个用户设备UE,所述多个UE包括第一UE、第二UE、第三UE和第四UE;其中,所述第一UE处于第一波束覆盖范围内,所述第二UE处于第二波束覆盖范围内,所述第三UE处于第三波束覆盖范围内,且所述第四UE处于第四波束覆盖范围内;所述第一波束和所述第二波束属于有源天线系统AAS第一极化方向的波束,所述第三波束和所述第四波束属于所述AAS第二极化方向的波束;所述第一极化方向的波束具有第一下倾角,所述第二极化方向的波束具有第二下倾角,其中所述装置通过所述AAS覆盖所述小区;a selection module, configured to select a plurality of user equipment UEs in a cell, where the multiple UEs include a first UE, a second UE, a third UE, and a fourth UE, where the first UE is in a first beam coverage range The second UE is in a second beam coverage, the third UE is in a third beam coverage, and the fourth UE is in a fourth beam coverage; the first beam and the first The second beam belongs to a beam in a first polarization direction of the active antenna system AAS, and the third beam and the fourth beam belong to a beam in a second polarization direction of the AAS; the beam in the first polarization direction has a beam a first downtilt angle, the beam in the second polarization direction having a second downtilt angle, wherein the device covers the cell through the AAS;
    处理模块,用于在相同的时频资源上,通过所述第一波束与所述第一UE进行数据传输,通过所述第二波束与所述第二UE进行数据传输,通过所述第三波束与所述第三UE进行数据传输,以及通过所述第四波束与所述第四UE进行数据传输。 a processing module, configured to perform data transmission with the first UE by using the first beam, and perform data transmission with the second UE by using the second beam, by using the third beam The beam performs data transmission with the third UE, and performs data transmission with the fourth UE by using the fourth beam.
  11. 如权利要求10所述的装置,其特征在于,所述选择模块具体用于:The device according to claim 10, wherein the selection module is specifically configured to:
    当所述小区的小区负载超过负载门限时,选择所述多个UE。When the cell load of the cell exceeds a load threshold, the multiple UEs are selected.
  12. 如权利要求10或11所述的装置,其特征在于,所述选择模块具体用于:The device according to claim 10 or 11, wherein the selection module is specifically configured to:
    获取所述多个UE的信号强度;Obtaining signal strengths of the multiple UEs;
    根据所述多个UE的信号强度,确定出所述多个UE的信号强度所属的信号强度区间;Determining, according to signal strengths of the multiple UEs, a signal strength interval to which the signal strengths of the multiple UEs belong;
    根据信号强度区间与波束覆盖范围的对应关系,选择第一波束覆盖范围内的第一UE、第二波束覆盖范围内的第二UE、第三波束覆盖范围内的第三UE以及第四波束覆盖范围内的第四UE。Selecting, according to the correspondence between the signal strength interval and the beam coverage range, the first UE in the first beam coverage, the second UE in the second beam coverage, the third UE in the third beam coverage, and the fourth beam coverage. The fourth UE in the range.
  13. 如权利要求10-12任一项所述的装置,其特征在于,所述处理模块具体用于:The device according to any one of claims 10 to 12, wherein the processing module is specifically configured to:
    根据第一等效预编码矩阵对所述第一UE的数据进行预编码处理,所述第一等效预编码矩阵为第一预编码矩阵与第一加权矩阵相乘得到的矩阵,所述第一预编码矩阵为码本集合中秩为2的预编码矩阵;Precoding the data of the first UE according to the first equivalent precoding matrix, where the first equivalent precoding matrix is a matrix obtained by multiplying the first precoding matrix by the first weighting matrix, where A precoding matrix is a precoding matrix with a rank of 2 in the codebook set;
    将预编码处理后的数据,映射到所述第一波束上进行传输;Mapping the pre-coded data to the first beam for transmission;
    其中,所述第一加权矩阵为
    Figure PCTCN2016078108-appb-100003
    Wherein the first weighting matrix is
    Figure PCTCN2016078108-appb-100003
  14. 如权利要求13所述的装置,其特征在于,所述处理模块具体用于:The device according to claim 13, wherein the processing module is specifically configured to:
    根据第二等效预编码矩阵对所述第二UE的数据进行预编码处理,所述第二等效预编码矩阵为第二预编码矩阵与所述第一加权矩阵相乘得到的矩阵,所述第二预编码矩阵为码本集合中秩为2的预编码矩阵;Performing precoding processing on the data of the second UE according to the second equivalent precoding matrix, where the second equivalent precoding matrix is a matrix obtained by multiplying the second precoding matrix by the first weighting matrix, The second precoding matrix is a precoding matrix with a rank of 2 in the codebook set;
    将预编码处理后的数据,映射到所述第二波束上进行传输。The pre-coded data is mapped onto the second beam for transmission.
  15. 如权利要求14所述的装置,其特征在于,所述处理模块具体用于:The device according to claim 14, wherein the processing module is specifically configured to:
    根据第三等效预编码矩阵对所述第三UE的数据进行预编码处理,所述第 三等效预编码矩阵为第三预编码矩阵与所述第一加权矩阵相乘得到的矩阵,所述第三预编码矩阵为码本集合中秩为2的预编码矩阵;Performing precoding processing on data of the third UE according to a third equivalent precoding matrix, where The third equivalent precoding matrix is a matrix obtained by multiplying a third precoding matrix by the first weighting matrix, and the third precoding matrix is a precoding matrix with a rank of 2 in the codebook set;
    将预编码处理后的数据,映射到所述第三波束上进行传输。The pre-coded data is mapped onto the third beam for transmission.
  16. 如权利要求15所述的装置,其特征在于,所述处理模块具体用于:The device according to claim 15, wherein the processing module is specifically configured to:
    根据第四等效预编码矩阵对所述第四UE的数据进行预编码处理,所述第四等效预编码矩阵为第四预编码矩阵与所述第一加权矩阵相乘得到的矩阵,所述第四预编码矩阵为码本集合中秩为2的预编码矩阵;Performing precoding processing on the data of the fourth UE according to the fourth equivalent precoding matrix, where the fourth equivalent precoding matrix is a matrix obtained by multiplying the fourth precoding matrix by the first weighting matrix, The fourth precoding matrix is a precoding matrix with a rank of 2 in the codebook set;
    将预编码处理后的数据,映射到所述第四波束上进行传输。The pre-coded data is mapped onto the fourth beam for transmission.
  17. 如权利要求13-16任一项所述的装置,其特征在于,所述处理模块具体用于:The device according to any one of claims 13 to 16, wherein the processing module is specifically configured to:
    根据设定的90°电桥矩阵,对所述第一UE的预编码处理后的数据进行加权处理,将所述第一UE的处理后的数据,映射到所述第一波束上进行传输;根据所述90°电桥矩阵,对所述第二UE的预编码处理后的数据进行加权处理,将所述第二UE的处理后的数据,映射到所述第二波束上进行传输;根据所述90°电桥矩阵,对所述第三UE的预编码处理后的数据进行加权处理,将所述第三UE的处理后的数据,映射到所述第三波束上进行传输;以及根据所述90°电桥矩阵,对所述第四UE的预编码处理后的数据进行加权处理,将所述第四UE的处理后的数据,映射到所述第四波束上进行传输。And performing weighting processing on the pre-coded data of the first UE according to the set 90° bridge matrix, and mapping the processed data of the first UE to the first beam for transmission; And performing weighting processing on the pre-coded data of the second UE according to the 90° bridge matrix, and mapping the processed data of the second UE to the second beam for transmission; The 90° bridge matrix performs weighting processing on the pre-coded data of the third UE, and maps the processed data of the third UE to the third beam for transmission; The 90° bridge matrix performs weighting processing on the pre-coded data of the fourth UE, and maps the processed data of the fourth UE to the fourth beam for transmission.
  18. 如权利要求17所述的装置,其特征在于,所述90°电桥矩阵为
    Figure PCTCN2016078108-appb-100004
    The apparatus of claim 17 wherein said 90° bridge matrix is
    Figure PCTCN2016078108-appb-100004
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