CN104639217B - antenna system, antenna and base station - Google Patents

Abstract

The invention discloses an antenna system, an antenna and a base station. The antenna system includes: a main antenna device, an auxiliary antenna device and a baseband processing module; the main antenna device is connected to the baseband processing module for forming a main beam, and for controlling the baseband processing module receiving and sending control signals and service signals within the coverage of the main beam; the auxiliary antenna device is connected to the baseband processing module, used to form auxiliary beams, and used to control the baseband processing module under the control of the baseband processing module. receiving and sending the service signal within the coverage area of the auxiliary beam; the baseband processing module is used to control the main antenna device to receive and send control signals and service signals within the coverage area of the main beam, and control the auxiliary antenna The device receives and sends service signals within the coverage of the secondary beam, so that basic coverage can be guaranteed while improving system capacity.

Description

Antenna Systems, Antennas and Base Stations

technical field

The embodiments of the present invention relate to communication technologies, and in particular to an antenna system, an antenna and a base station.

Background technique

The antenna system is a system that uses electromagnetic waves to transmit information, thereby realizing the reception and transmission of wireless communication signals. With the rapid development of wireless communication technology and people's continuous higher requirements for the capacity and transmission rate of communication systems, a series of new antenna system architectures have been proposed.

A current technical solution to improve system capacity is the use of multi-column small-spaced array antennas, which are characterized by the use of small-spaced array antennas to split a single beam of signals into multiple beams, thereby realizing space-division multiple access, that is, multi-user Parallel transmission greatly improves the system capacity.

However, multi-column small-spaced array antennas do not support wide beams and cannot guarantee basic coverage; and due to the broadband characteristics of antenna arrays, the beam quality in high-frequency bands deteriorates, which cannot economically meet the needs of multi-system integration.

Contents of the invention

Embodiments of the present invention provide an antenna system, an antenna and a base station, which can ensure basic coverage while improving system capacity.

In the first aspect, an embodiment of the present invention provides an antenna system, which is characterized in that it includes: a main antenna device, an auxiliary antenna device, and a baseband processing module;

The main antenna device is connected with the baseband processing module to form a main beam, and receives and sends control signals and service signals within the coverage of the main beam under the control of the baseband processing module;

The auxiliary antenna device is connected to the baseband processing module, used to form an auxiliary beam, and receives and sends service signals within the coverage of the auxiliary beam under the control of the baseband processing module;

The baseband processing module is used to control the main antenna device to receive and send control signals and service signals within the coverage area of the main beam, and control the auxiliary antenna device to receive and send service signals within the coverage area of the auxiliary beam.

With reference to the first aspect, in the first implementation manner, the main antenna device includes M ₁ first antenna arrays, M ₁ is an integer greater than or equal to 1; the first antenna array includes L ₁ polarization directions, L ₁ is an integer greater than or equal to 1; M ₁ first antenna arrays are connected to M ₁ × L ₁ main antenna transceiver channels; the first antenna array is connected to the baseband processing module, for under the control of the baseband processing module, in the main Receive and send control signals and business signals within the beam coverage.

In combination with the first aspect and the first implementation, in the second implementation, the main antenna device includes a first antenna array, and the first antenna array includes two polarization directions; the main antenna device also includes two The main antenna transmit and receive channel.

In combination with the first aspect and the first two implementation manners, in the third implementation manner, the auxiliary antenna device includes M ₂ second antenna arrays, where M ₂ is an integer greater than 1; the second antenna array includes L ₂ polarization directions , L ₂ is an integer greater than or equal to 1; the auxiliary antenna device also includes L ₂ auxiliary beamforming networks, each auxiliary beamforming network is an N ₂ driving M ₂ beam forming network, and each N ₂ driving M ₂ beam forming The network acts on the co-polarized array in the second antenna array to form N ₂ auxiliary beams, and each N ₂ and M ₂ beamforming network connects N ₂ auxiliary antenna transceiver channels, and N ₂ is an integer greater than 1; the second antenna The array is connected to the baseband processing module, and is used to receive and send service signals within the coverage of the auxiliary beam under the control of the baseband processing module.

In combination with the first aspect and the first three implementation manners, in the fourth implementation manner, the auxiliary antenna device includes three rows of second antenna arrays, the second antenna array includes two polarization directions, and the auxiliary antenna device also includes two 2 Drive 3 beam forming networks, each 2 drive 3 beam forming network is connected to 2 auxiliary antenna transceiver channels; or, the auxiliary antenna device includes 4 columns of second antenna arrays, and the second antenna array includes 2 polarization directions, and the auxiliary antenna device It also includes 2 2-drive 4-beam forming networks, and each 2-drive 4-beam forming network is connected to 2 auxiliary antenna transceiver channels.

In combination with the first aspect and the first four implementation manners, in the fifth implementation manner, the main antenna device and the auxiliary antenna device correspond to the same M ₃ third antenna array, the third antenna array includes L ₃ polarization directions, M ₃ is an integer greater than 1, and L ₃ is an integer greater than or equal to 1; the main antenna device and the auxiliary antenna device correspond to the same L ₃ beamforming networks, and each beamforming network is N ₃ or M ₃ beamforming networks, each N ₃ and M ₃ beamforming networks act on the co-polarized array in the third antenna array to form N ₃ auxiliary beams, and each N ₃ and M ₃ beamforming network is connected to N ₃ antenna transceiving channels, and N ₃ is greater than An integer of 1; for each polarization direction, N ₃ antenna transceiving channels are used to turn on or off under the control of the baseband processing module, so as to select the auxiliary beam; for each polarization direction, N ₃ antenna transceiving channels It is also used for amplitude and phase weighting of received and transmitted signals under the control of the baseband processing module, so that the N ₃ auxiliary beams formed by the N ₃ drive M ₃ beamforming network are weighted and synthesized into 1 main beam; the third antenna array , for receiving and sending control signals and service signals within the coverage of the main beam, and/or receiving and sending service signals within the coverage of the secondary beam.

Combining the first aspect and the first five implementation modes, in the sixth implementation mode, the L ₃ ×N ₃ antenna transceiving channels are also used to correct the received and transmitted signals, so that the L ₃ ×N ₃ antennas transmit and receive The magnitude and phase changes of the signals received and transmitted by the channel are consistent.

Combining the first aspect and the first six implementation manners, in the seventh implementation manner, for each polarization direction, the lengths of connecting cables between the N ₃ antenna transceiving channels and the N ₃ and M ₃ beamforming networks are the same.

In combination with the first aspect and the first seven implementation manners, in the eighth implementation manner, the baseband processing module is specifically used for when the beam with the largest reference signal received power RSRP is the main beam, if the main beam and the auxiliary beam with the highest RSRP The absolute value of the RSRP difference is less than the first set threshold value, and the number of multiplexable auxiliary beam set elements is greater than 1, then the traffic channel covered by the main beam with the largest RSRP is switched to the auxiliary beam with the largest RSRP.

Combining the first aspect and the first eight implementations, in the ninth implementation, the element in the multiplexable auxiliary beam set is the auxiliary beam with the largest RSRP and the absolute value of the RSRP difference between the auxiliary beam with the largest RSRP is greater than the first Second, set the secondary beam of the threshold value.

In a second aspect, an embodiment of the present invention provides an antenna, including a main antenna device and an auxiliary antenna device;

The main antenna device is used to form the main beam, and is used to receive and send control signals and service signals within the range of the main beam under the control of the baseband processing module of the base station; the auxiliary antenna device is used to form the auxiliary beam, and is used to Under the control of the baseband processing module, service signals are received and sent within the coverage of the auxiliary beam.

With reference to the second aspect, in the first implementation manner, the main antenna device includes M ₁ first antenna arrays, M ₁ is an integer greater than or equal to 1; the first antenna array includes L ₁ polarization directions, L ₁ is an integer greater than or equal to 1; M ₁ first antenna arrays are connected to M ₁ × L ₁ main antenna transceiver channels; the first antenna array is connected to the baseband processing module, for under the control of the baseband processing module, in the main Receive and send control signals and business signals within the beam coverage.

In combination with the second aspect and the first implementation, in the second implementation, the main antenna device includes a first antenna array, and the first antenna array includes two polarization directions; the main antenna device also includes two The main antenna transmit and receive channel.

In combination with the second aspect and the first two implementation manners, in the third implementation manner, the auxiliary antenna device includes M ₂ second antenna arrays, where M ₂ is an integer greater than 1; the second antenna array includes L ₂ polarization directions , L ₂ is an integer greater than or equal to 1; the auxiliary antenna device also includes L ₂ auxiliary beamforming networks, each auxiliary beamforming network is an N ₂ driving M ₂ beam forming network, and each N ₂ driving M ₂ beam forming The network acts on the co-polarized array in the second antenna array to form N ₂ auxiliary beams, and each N ₂ and M ₂ beamforming network connects N ₂ auxiliary antenna transceiver channels, and N ₂ is an integer greater than 1; the second antenna The array is connected to the baseband processing module, and is used to receive and send service signals within the coverage of the auxiliary beam under the control of the baseband processing module.

In combination with the second aspect and the first three implementation manners, in the fourth implementation manner, the auxiliary antenna device includes three rows of second antenna arrays, the second antenna array includes two polarization directions, and the auxiliary antenna device further includes two 2 Drive 3 beam forming networks, each 2 drive 3 beam forming network is connected to 2 auxiliary antenna transceiver channels; or, the auxiliary antenna device includes 4 columns of second antenna arrays, and the second antenna array includes 2 polarization directions, and the auxiliary antenna device It also includes 2 2-drive 4-beam forming networks, and each 2-drive 4-beam forming network is connected to 2 auxiliary antenna transceiver channels.

In combination with the second aspect and the first three implementation manners, in the fourth implementation manner, the main antenna device and the auxiliary antenna device correspond to the same M ₃ third antenna array, the third antenna array includes L ₃ polarization directions, M ₃ is an integer greater than 1, and L ₃ is an integer greater than or equal to 1; the main antenna device and the auxiliary antenna device correspond to the same L ₃ beamforming networks, and each beamforming network is N ₃ or M ₃ beamforming networks, each N ₃ and M ₃ beamforming networks act on the co-polarized array in the third antenna array to form N ₃ auxiliary beams, and each N ₃ and M ₃ beamforming network is connected to N ₃ antenna transceiving channels, and N ₃ is greater than An integer of 1; for each polarization direction, N ₃ antenna transceiving channels are used to turn on or off under the control of the baseband processing module, so as to select the auxiliary beam; for each polarization direction, N ₃ antenna transceiving channels It is also used for amplitude and phase weighting of received and transmitted signals under the control of the baseband processing module, so that N ₃ secondary beams are weighted to synthesize 1 main beam; the third antenna array is used for receiving within the coverage of the main beam and sending control signals and service signals, and/or receiving and sending service signals within the coverage of the auxiliary beam.

In combination with the second aspect and the first four implementation modes, in the fifth implementation mode, the L ₃ ×N ₃ antenna transceiving channels are also used for: correcting the received and transmitted signals, so that the L ₃ ×N ₃ antennas The magnitude and phase changes of the signals received and transmitted by the transceiver channel are consistent.

Combining the second aspect and the first five implementation manners, in the sixth implementation manner, for each polarization direction, the lengths of connecting cables between the N ₃ antenna transceiving channels and the N ₃ and M ₃ beamforming networks are the same.

In a third aspect, an embodiment of the present invention provides a base station, including: a baseband processing module;

The baseband processing module is used to control the main antenna device in the antenna to receive and send control signals and service signals within the range of the main beam; to control the auxiliary antenna device in the antenna to receive and send service signals within the coverage of the auxiliary beam.

In combination with the second aspect, in the first implementation manner, the baseband processing module is specifically configured to: when the beam with the largest reference signal received power RSRP is the main beam, if the RSRP difference between the main beam and the auxiliary beam with the largest RSRP is absolutely value is less than the first set threshold value, and the number of multiplexable auxiliary beam set elements is greater than 1, then the traffic channel covered by the main beam with the largest RSRP is switched to the auxiliary beam with the largest RSRP.

In combination with the second aspect and the first implementation, in the second implementation, the element in the multiplexable auxiliary beam set is the auxiliary beam with the largest RSRP and the absolute value of the RSRP difference between the auxiliary beam and the auxiliary beam with the largest RSRP is greater than the first Second, set the secondary beam of the threshold value.

The antenna system, antenna and base station provided by the embodiments of the present invention include a main antenna device, an auxiliary antenna device and a baseband processing module. The main antenna device is connected with the baseband processing module for forming the main beam, and receives and sends control signals and service signals within the coverage of the main beam under the control of the baseband processing module; the auxiliary antenna device is connected with the baseband processing module for forming The auxiliary beam receives and sends service signals within the coverage of the auxiliary beam under the control of the baseband processing module; the baseband processing module is used to control the main antenna device to receive and send control signals and service signals within the coverage of the main beam, and control the auxiliary antenna The device receives and sends service signals within the coverage of the auxiliary beam. The control signal is sent and received through the main beam, and the service signal is sent and received through the main beam and the auxiliary beam, so as to improve the capacity of the system while ensuring basic coverage.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic structural diagram of an antenna system provided according to Embodiment 1 of the present invention;

FIG. 2 is a schematic structural diagram of an antenna system provided according to Embodiment 2 of the present invention;

FIG. 3 is a horizontal pattern of the main antenna beam formed by the main antenna device provided in Embodiment 2 of the present invention;

4 is a schematic structural diagram of a 2×3 beamforming network of auxiliary antennas provided according to Embodiment 2 of the present invention;

FIG. 5 is a horizontal diagram of the auxiliary antenna beam formed by the auxiliary antenna device provided in Embodiment 2 of the present invention;

FIG. 6 is a schematic structural diagram of an antenna system provided according to Embodiment 3 of the present invention;

7 is a schematic structural diagram of a 2×4 beamforming network of auxiliary antennas provided according to Embodiment 3 of the present invention;

Fig. 8 is a horizontal direction diagram of the auxiliary beam of the auxiliary antenna device provided according to the third embodiment of the present invention;

FIG. 9 is a schematic structural diagram of an antenna system provided according to Embodiment 4 of the present invention;

FIG. 10 is a simulated horizontal pattern of the main beam according to Embodiment 4 of the present invention;

FIG. 11 is a schematic structural diagram of an antenna system provided according to Embodiment 5 of the present invention;

Fig. 12 is a simulated horizontal pattern of the main beam according to Embodiment 5 of the present invention;

FIG. 13 is a schematic structural diagram of an antenna provided in Embodiment 6 of the present invention;

FIG. 14 is a schematic structural diagram of a base station provided by Embodiment 7 of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

FIG. 1 is a schematic structural diagram of an antenna system provided according to Embodiment 1 of the present invention. As shown in FIG. 1, the antenna system 11 provided by the present invention includes: a main antenna device 101, an auxiliary antenna device 102 and a baseband processing module 103;

The main antenna device 101 is connected to the baseband processing module 103 for forming a main beam, and receives and sends control signals and service signals within the coverage of the main beam under the control of the baseband processing module 103;

The auxiliary antenna device 102 is connected to the baseband processing module 103, and is used to form an auxiliary beam, and receives and sends service signals within the coverage of the auxiliary beam under the control of the baseband processing module 103;

The baseband processing module 103 is used to control the main antenna device 101 to receive and send control signals and service signals within the coverage area of the main beam, and control the auxiliary antenna device 102 to receive and send service signals within the coverage area of the auxiliary beam.

Wherein, the main antenna device 101 is mainly used to complete basic coverage, and the auxiliary antenna device 102 is used to improve capacity. Specifically, the baseband processing module 103 is mainly used to control the main antenna device 101 to send and receive control signals and service signals within the coverage of the main beam; the baseband processing module 103 is also used to control the auxiliary antenna device 102 to send and receive service signals within the coverage of the auxiliary beam.

As a feasible implementation manner, the main antenna device 101 and the auxiliary antenna device 102 may respectively include respective antenna arrays and transceiver channels, and the auxiliary antenna device further includes a beam forming network. The transceiver channel of the main antenna device 101 can select the main beam under the control of the baseband processing module 103 , and the beamforming network and the transceiver channel of the secondary antenna device 102 can form and select the secondary beam under the control of the baseband processing module 103 .

As another feasible implementation manner, the main antenna device 101 and the auxiliary antenna device 102 may correspond to the same antenna array, beamforming network, and transceiver channel. The secondary beams are formed and selected under the control of , and the main beams are simulated.

In an implementation scenario where the main antenna device 101 and the auxiliary antenna device 102 can respectively include their own antenna arrays and transceiver channels, as shown in FIG. The main antenna transceiver channel group is connected to the baseband processing module, and receives and sends control signals within the coverage of the main beam under the control of the baseband processing module. The auxiliary antenna device 102 is composed of an auxiliary antenna array 1021 , an auxiliary beamforming network 1022 and an auxiliary antenna transceiving channel group 1023 .

Wherein, the main antenna array 1011 has the ability to support multiple frequency bands. It may be an array of M ₁ columns, where M ₁ is an integer greater than or equal to 1, and there may be L ₁ polarization directions of the array, and L ₁ is an integer greater than or equal to 1. Each main antenna transceiving channel group 1012 of the main antenna corresponds to a polarization direction; the main antenna transceiving channel group 1012 corresponding to each polarization direction of the main antenna array 1011 includes M ₁ main antenna transceiving channels.

Specifically, when the main antenna array 1011 is single-polarized, that is, when L ₁ =1, M ₁ columns of first antenna arrays are connected to M ₁ main antenna transceiver channels; when the main antenna array 1011 is multi-polarized, that is, L ₁ >1 When , M ₁ columns of first antenna arrays are connected to M ₁ ×L ₁ main antenna transmitting and receiving channels.

The auxiliary antenna array 1021 may also be in a single-column or multi-column structure, and may be single-polarized or multi-polarized. Assume that the auxiliary antenna array 1021 has M ₂ columns, wherein M ₂ is an integer greater than 1, and the polarization directions of the array can be L ₂ , and L ₂ is an integer greater than or equal to 1; each auxiliary antenna transceiver channel group 1023 of the auxiliary antenna Corresponding to one polarization direction, there are L ₂ in total. The secondary antenna transceiver channel group 1023 corresponding to each polarization direction of the array includes N ₂ transceiver channels, where N ₂ is an integer greater than 1.

The auxiliary antenna device 102 also includes L ₂ auxiliary beamforming networks 1022, each auxiliary beamforming network 1022 is an N ₂ × M ₂ beam forming network, and each N ₂ × M ₂ beam forming network acts on the second antenna array The co-polarized array forms N ₂ auxiliary beams, and each N ₂ and M ₂ beamforming network connects N ₂ auxiliary antenna transceiver channels; the N ₂ auxiliary antenna transceiver channels corresponding to each polarization direction are used for baseband processing It is turned on or off under the control of the module, so as to select the auxiliary beam.

In the implementation scenario where the main antenna device 101 and the auxiliary antenna device 102 correspond to the same antenna array, beamforming network, and transceiver channel, the main antenna device and the auxiliary antenna device may also correspond to the same M ₃ antenna arrays, and the M ₃ antenna arrays Including L ₃ polarization directions, M ₃ is an integer greater than 1, and L ₃ is an integer greater than or equal to 1; the antenna array can be used to receive and transmit control signals and service signals within the coverage of the main beam, and/ Or, receive and send service signals within the coverage of the auxiliary beam.

_The main antenna device and the auxiliary antenna device correspond to the same L3 beamforming networks, each beamforming network is an _N3 or _M3 beamforming network, and each _N3 or _M3 beamforming network is connected to _N3 antenna transceiving channels, N ₃ is an integer greater than 1.

The N ₃ antenna transceiving channels corresponding to each polarization direction are used to open or close under the control of the baseband processing module to select the auxiliary beam; the L ₃ × N ₃ antenna transceiving channels are also used for receiving and transmitting The signal is corrected so that the amplitude change and phase change of the signal received and transmitted by the L ₃ ×N ₃ antenna transceiving channels are consistent, and at the same time, the connecting line between each antenna transceiving channel and the N ₃ drive M ₃ beamforming network The length of the cable is the same; the N ₃ transceiver channels corresponding to each polarization direction are also used for amplitude and phase weighting of the received and transmitted signals under the control of the baseband processing module, so that the N ₃ drive M ₃ beamforming network The formed N ₃ auxiliary beams are weighted and synthesized into 1 main beam.

The baseband processing module 103 can control the antenna array of the main antenna device to receive signals within the coverage of the main beam according to factors such as the pilot support capability of the antenna system, user signal transmission power, and Reference Signal Receiving Power (RSRP for short). and send control signals and service signals, and control the antenna array of the auxiliary antenna device to receive and send service signals within the coverage area of the auxiliary beam.

For example: there is a set of multiplexable auxiliary beams, and the elements in this set are the auxiliary beams with the largest RSRP among the auxiliary beams and the auxiliary beams whose absolute value of the RSRP difference with the auxiliary beam with the largest RSRP is greater than the second set threshold . Then when the beam with the largest RSRP is the main beam, if the absolute value of the difference between the main beam and the auxiliary beam with the largest RSRP is less than the first set threshold value, and the number of multiplexable auxiliary beam set elements is greater than 1, the baseband The processing module 103 may switch the traffic channel covered by the main beam with the largest RSRP to the auxiliary beam covered by the largest RSRP.

In this embodiment, under the control of the baseband processing module, the main antenna device receives and sends control signals and service signals within the coverage of the main beam; the auxiliary antenna device receives and sends service signals within the coverage of the auxiliary beam. In this way, the control signal is sent and received through the main beam, the service signal is sent and received at the main beam and the auxiliary beam, and the auxiliary beam can be multiplexed, so as to improve the capacity of the system and ensure basic coverage at the same time.

Fig. 2 is a schematic structural diagram of an antenna system provided according to Embodiment 2 of the present invention. As shown in FIG. 2 , in this embodiment, the main antenna device and the auxiliary antenna device may include their own antenna arrays and transceiver channels as an example for description. specific:

The antenna system 22 includes a main antenna device 201 , an auxiliary antenna device 202 and a baseband processing module 203 . The main antenna device 201 specifically includes a main antenna array 2011 and a main antenna transceiver channel group 2012; the auxiliary antenna device includes an auxiliary antenna array 2021, an auxiliary beamforming network 2022, and an auxiliary antenna transceiver channel group 2023; the baseband processing module 203 includes a baseband beam Forming module 2031 and baseband beam application module 2032.

In the main antenna device 201, the main antenna array 2011 has a single-column cross-polarization structure, and the main antenna array 2011 includes a +45° polarization direction and a -45° polarization direction, which are respectively defined as the main polarization direction and the negative polarization direction; each Each polarization direction is correspondingly connected to one main antenna transceiver channel group 2012, so there are two main antenna transceiver channel groups 2012, corresponding to the two directions of main polarization and negative polarization respectively, and finally connected to the baseband in the baseband processing module 203 Beam Application Module 2031. The horizontal pattern of the main antenna beam formed by the main antenna device 201 is shown in FIG. 3 .

In the auxiliary antenna device 202, the auxiliary antenna array 2021 has a three-column structure, and the auxiliary antenna array 2021 includes two polarization directions, and each polarization direction is correspondingly connected to a 2×3 beamforming network. Wherein, the 2-drive 3-beam forming network structure 2022 of the auxiliary antenna is shown in FIG. 4 , including a 90° electric bridge, a 2:1 power splitter and a 180° phase shifter. Among them, the 90° bridge is used to divide the signal flowing through the bridge into two paths, one path is shifted by 90°, and the phase of the other path remains unchanged; the 2:1 power divider divides the signal flowing through the power divider into two paths. Two channels, and the amplitude changes, the amplitude ratio of the signal is 1:0.707; the 180° phase shifter causes a 180° phase shift of the signal flowing through the phase shifter. The 3 ports at the upper end of the 2-driver 3-beam forming network of the auxiliary antenna are respectively connected to 3 arrays with the same polarization, and the 2 ports at the lower end can be respectively connected to the auxiliary beam transceiver channel group 2023 through cables of the same length, and the connecting cables must be of the same length The phase change and amplitude change of each signal passing through the cable can be kept consistent. Since there is a 2-drive and 3-beamforming network for each polarization direction, the 4 ports at the lower end of the network correspond to the 4 secondary beam transmitting and receiving channels of the 2 sets of secondary beam transmitting and receiving channel groups 2023 . The auxiliary antenna transceiving channels are also used to correct the received and transmitted signals, so that the amplitude and phase changes of the signals received and transmitted by the four antenna transceiving channels are consistent. The horizontal pattern of the auxiliary antenna beam formed by the auxiliary antenna device 202 is shown in FIG. 5 .

The auxiliary beam transmitting and receiving channels are connected to the baseband beamforming module 2031, and the baseband beamforming module determines which auxiliary beam transmitting and receiving channels are used to receive and transmit the auxiliary beam by weighting the amplitude and phase of the received and transmitted signals. Because each auxiliary beam transceiver channel group in the auxiliary antenna device has two auxiliary beam transceiver channels, it can receive and transmit two auxiliary beams, and the weights for amplitude and phase weighting can be represented by a two-dimensional array, the array Each element in can correspond to a secondary beam transceiver channel, which can be represented by 1 or 0. An element of 1 means that the corresponding secondary beam transceiver channel is open, and the secondary beam can be received or transmitted through the secondary beam transceiver channel; the elements are 0 means that the corresponding secondary beam transmit and receive channel is closed, and the secondary beam will not receive or transmit. The weight of the baseband beamforming module can be [1 0] or [0 1], corresponding to two secondary beams respectively.

The baseband beam application module 2032 is used to control the main antenna device 201 to receive and send control signals and partial For service signals, control the auxiliary antenna device 202 to receive and send service signals within the coverage of the auxiliary beam, or control the main antenna device 201 to switch the service channel from the main beam coverage to the auxiliary beam when receiving and sending service signals within the coverage of the main beam Coverage, specifically:

For any auxiliary beam, if the absolute value of the RSRP difference between its RSRP and the beam with the largest RSRP among all auxiliary beams is greater than the second set threshold, for example: 6dB, then these auxiliary beams are defined as a multiplexable auxiliary beam set elements in . In addition to the above-mentioned secondary beams, there is a secondary beam with the largest RSRP in the set of multiplexable secondary beams. If the number of multiplexable auxiliary beam set elements is greater than 1, and the beam with the largest RSRP among all beams is the main beam, then judge whether the absolute value of the RSRP difference between the main beam with the largest RSRP and the auxiliary beam with the largest RSRP is smaller than the first set Set the threshold, set it to 9dB here. If it is smaller, it means that even if the service channel within the coverage of the main beam with the largest RSRP is switched to the auxiliary beam, the coverage performance of this user will not be greatly lost. The traffic channel is switched to the secondary beam coverage with the largest RSRP. This method pushes more users who meet the multiplexing conditions to be covered under the secondary beam, thereby increasing the probability of secondary beam multiplexing. By reasonably setting the first setting threshold, it can be ensured that the coverage performance will not be significantly lost, and the capacity gain brought by multiplexing can be increased.

In the antenna system provided in this embodiment, the main antenna device is composed of a main antenna array of a single-column cross-polarized array and two main antenna transceiver channel groups, which are used to receive and send control signals within the coverage of the main beam; the auxiliary antenna device It consists of 3 auxiliary antenna arrays of cross-polarized arrays, 2 2-drive 3-beam forming networks and 2 auxiliary antenna transceiver channel groups consisting of 4 auxiliary antenna transceiver channels, receiving and sending service signals within the coverage of the auxiliary beams; The baseband processing module is composed of a baseband beamforming module and a baseband beam application module. By weighting the amplitude and phase of the signal to determine which auxiliary beam transceiver channels receive and send auxiliary beams, and according to information such as the reference signal received power RSRP, the The traffic channel is switched from the main beam coverage to the auxiliary beam coverage. In this way, the control signal is sent and received through the main beam, and the service signal is sent and received through the main beam and the auxiliary beam, so as to improve the capacity of the system while ensuring basic coverage.

FIG. 6 is a schematic structural diagram of an antenna system provided according to Embodiment 3 of the present invention. As shown in FIG. 6 , in this embodiment, the antenna array and the transmitting and receiving channels of the main antenna device remain unchanged, while the antenna array, beamforming network and transmitting and receiving channels of the auxiliary antenna device are changed. specific:

The antenna system 44 includes a main antenna device 401 , an auxiliary antenna device 402 and a baseband processing module 403 . The main antenna device 401 specifically includes the main antenna array 4011 and the main antenna transceiver channel group 4012; the auxiliary antenna device includes the auxiliary antenna array 4021, the auxiliary beamforming network 4022 and the auxiliary antenna internal correction multi-channel transceiver channel group 4023; the baseband processing module 403 includes a baseband beam forming module 4031 and a baseband beam application module 4032. The structures and functions of the main antenna device 401 and the baseband processing module 403 are consistent with those of the second embodiment, and will not be repeated here. The structure of the auxiliary antenna device 402 is described in detail below:

The auxiliary antenna array 4021 is a 4-column cross-polarized array, and its two polarization directions include a +45° polarization direction and a -45° polarization direction, which are respectively defined as a main polarization direction and a negative polarization direction. Each polarization direction is connected to a 2-driver 4-beamforming network. The structure of the 2-driver 4-beamforming network 4022 of the auxiliary antenna is shown in Figure 7, including a 90° electric bridge, two 4:1 power splitters and two 180° phase shifters. Among them, the 90° bridge is used to divide the signal flowing through the bridge into two paths, one path is shifted by 90°, and the phase of the other path remains unchanged; the 4:1 power divider divides the signal flowing through the power divider into two paths. Two channels, and the amplitude changes, the amplitude ratio of the signal is 1:0.5; the 180° phase shifter causes a 180° phase shift of the signal flowing through the phase shifter. The 4 ports at the upper end of the 2-driver 4-beam forming network 4022 of the auxiliary antenna are respectively connected to 4 columns of co-polarized arrays, and the 2 ports at the lower end are respectively connected to the auxiliary beam transceiver channel group 4023 through cables of the same length, and the connecting cables are of the same length. The phase change and amplitude change of each signal passing through the cable can be kept consistent. Because there is a 2-driver and 4-beamforming network for each polarization direction, the 4 ports at the lower end of the network correspond to the 4 auxiliary beam transceiver channels of the 2 auxiliary beam transceiver channel groups. The auxiliary antenna transceiving channels are also used to correct the received and transmitted signals, so that the amplitude and phase changes of the signals received and transmitted through the four antenna transceiving channels are consistent. The horizontal pattern of the auxiliary beam of the auxiliary antenna device is shown in FIG. 8 . The two beams formed by the auxiliary antenna device under the 2-drive and 4-beam forming network have low sidelobe suppression, small overlapping area of the two beams, and good isolation between the two beams, which can effectively control the interference between the beams, thereby better improving the system capacity.

In this embodiment, when the structures of the main antenna device and the baseband processing module are consistent with those of the foregoing embodiments, the antenna array in the auxiliary antenna device is changed to 4 columns of cross-polarized arrays, and the beamforming network in the auxiliary antenna device is changed to 2-drive-4 structure, which realizes the reception and transmission of signals with auxiliary antenna arrays with different numbers of columns, and expands the array mode of auxiliary antenna arrays, making the implementation of auxiliary antenna arrays more flexible and reliable, allowing more business Covering under the auxiliary beam, at the same time, the control signal is sent and received through the main beam, and the service signal is sent and received in the main beam and the auxiliary beam. The auxiliary beam can be multiplexed to improve the capacity of the system while ensuring basic coverage.

FIG. 9 is a schematic structural diagram of an antenna system provided according to Embodiment 4 of the present invention. As shown in FIG. 9 , this embodiment is described by taking the main antenna device and the auxiliary antenna device sharing the same antenna array, beamforming network and sending and receiving channel as an example. specific:

The main antenna device and auxiliary antenna device 66 in the antenna system correspond to the same three columns of cross-polarized antenna arrays, so the structure of the antenna system consists of two parts: the main (auxiliary) antenna device 601 and the baseband processing module 602.

In the main (auxiliary) antenna device 601, the main antenna device and the auxiliary antenna device correspond to the same three columns of cross-polarized antenna arrays 6011, each antenna array includes a +45° polarization direction and a -45° polarization direction, respectively defined main and negative polarization directions.

Similarly, the antenna arrays of the main antenna device and the auxiliary antenna device correspond to the same beamforming network, and each polarization direction corresponds to one beamforming network. Each beamforming network is a 2x3 beamforming network 6012, and each 2x3 beamforming network 6012 is connected to two auxiliary beam transceiver channel groups 6033 with internal correction capabilities through equal-length cables; therefore, there are 4 antenna transceiver channels in total Connect with 2 2-drive 3-beamforming networks.

The baseband processing module 602 includes a baseband beam forming module 6021 and a baseband beam application module 6022 .

The auxiliary beam transceiving channel is connected to the baseband beamforming module 6021, which has two ports, one is the main negative polarization port of the main beam, and the other is the main negative polarization port of the auxiliary beam.

The baseband beamforming module 6021 determines which beam receiving and transmitting channels are used for receiving and transmitting the main beam and the auxiliary beam through amplitude and phase weighting. Because there are two sets of beam receiving and transmitting channel groups 6033 in the main (auxiliary) antenna device, two auxiliary beams can be received and transmitted, and when the two sets of beam receiving and transmitting channel groups 6033 are opened at the same time, because they are used to connect the beam receiving and transmitting channels The length of the connecting cable is the same as that of the beamforming network 6012, and the beam receiving and transmitting channels can also be used to correct the received and transmitted signals, so that the amplitude and phase changes of the signals received and transmitted through the 4 antenna transmitting and receiving channels are consistent, so the The two beams are combined to simulate the main beam. Therefore, control signals and service signals can be received and sent within the coverage of the main beam, and/or, when the single-beam transceiver channel group 6033 is turned on, service signals can be received and sent within the coverage of the secondary beam. The simulated horizontal pattern of the main beam is shown in Fig. 10 . The control channel of the main beam formed by simulation is not distorted, and the radiation pattern in the main radiation direction has no obvious depression.

When the baseband beamforming module 6021 weights the amplitude and phase of the transmitted and received signals, the weight of the amplitude and phase weighting can be represented by a two-dimensional array, and each element in the array can correspond to a secondary beam transmitting and receiving channel. Can be represented by 1 or 0. When the element is 1, it means that the corresponding auxiliary beam transceiver channel is opened, and the auxiliary beam can be received and sent through the auxiliary beam transceiver channel; when the element is 0, it means that the corresponding auxiliary beam transceiver channel is closed, and the auxiliary beam will not be transmitted. Receive and send. The weights of the baseband beamforming module 6021 can be [1 0] and [0 1], corresponding to two auxiliary beams respectively. When the weight is [1 1], the two auxiliary beams are combined to simulate the main Reception and transmission of signals within the beam.

The baseband beam application module 6022 is used to control the receiving and transmitting control of the main (auxiliary) antenna device 601 within the coverage area of the main beam according to at least one of the pilot support capability, user signal transmission power and reference signal reception power RSRP. signals and some service signals, when controlling the main (auxiliary) antenna device 601 to receive and send service signals within the coverage of the auxiliary beam, or to control the main (auxiliary) antenna device 601 to receive and send service signals within the coverage of the main beam, the The traffic channel is switched from the main beam coverage to the auxiliary beam coverage. The method is as follows:

For any auxiliary beam, if the absolute value of the RSRP difference between its RSRP and the auxiliary beam with the largest RSRP is greater than a second set threshold, for example 6dB, then these auxiliary beams are defined as elements in the multiplexable auxiliary beam set. In addition to the above-mentioned secondary beams, the multiplexable secondary beam set also includes a secondary beam with the largest RSRP. If the number of multiplexable auxiliary beam set elements is greater than 1, and the beam with the largest RSRP among all beams is the main beam, then judge whether the absolute value of the RSRP difference between the main beam with the largest RSRP and the auxiliary beam with the largest RSRP is smaller than the first set Set the threshold, set it to 9dB here. If it is smaller, it means that even if the service channel covered by the beam with the largest RSRP is switched to the auxiliary beam for coverage, the coverage performance of this user will not be greatly lost. When the above two conditions are met at the same time, the traffic channel is switched from the coverage of the main beam with the largest RSRP to the coverage of the auxiliary beam with the largest RSRP. This method pushes more users who meet the multiplexing conditions to be covered under the auxiliary beam, thereby increasing the probability of beam multiplexing. Here, the first threshold value can be set freely. By reasonably setting different thresholds, it can be ensured that there will be no obvious loss in coverage performance, and the capacity gain brought by multiplexing can be increased.

In this embodiment, the main antenna device and the auxiliary antenna device share the same 3-column antenna array and the same 2 2x3 beamforming networks. The length of the cable between each antenna transceiver channel and the 2×3 beamforming network is the same, and the antenna transceiver channel is also used to correct the received and transmitted signals, so that the 4 antenna transceiver channels receive and transmit the signals. Amplitude and phase changes are consistent. Under the control of the baseband processing module, the amplitude and phase weighting of the received and transmitted signals are weighted by the antenna transceiver channel, so that the 2 secondary beams formed by the 2-drive 3-beam forming network can be weighted and synthesized into 1 main beam. In this way, the functions of the main antenna device and the auxiliary antenna device are simultaneously realized on the same antenna array and beamforming network, and the control signal is transmitted and received through the main beam, and the service signal is transmitted and received through the main beam and the auxiliary beam, so as to improve the capacity of the system and Ensure basic coverage of the system. In this way, the function of the main antenna device in the aforementioned embodiment is changed to be undertaken by the auxiliary antenna device. The aforementioned main antenna device can be unused or directly removed. If the aforementioned main antenna device is not used, the aforementioned main antenna system can be independently used for other frequency bands. If By removing the above-mentioned main antenna device, the space volume of the antenna system can be reduced.

FIG. 11 is a schematic structural diagram of an antenna system provided by Embodiment 5 of the present invention. As shown in FIG. 11 , similar to Embodiment 4, the main antenna device and the auxiliary antenna device in this embodiment share the same antenna array, beamforming network, and transceiver channel, which will not be repeated here. The difference between this embodiment and the foregoing fourth embodiment lies in that the antenna array, the beamforming network, and the transmitting and receiving channels of the main (auxiliary) antenna device in this embodiment are changed. details as follows:

The main (auxiliary) antenna array 7021 corresponds to the same 4-column cross-polarized array, and each polarization direction of the array is correspondingly connected to a 2×4 beamforming network 7022, and the structure and function of the 2×4 beamforming network 7022 are the same as in Embodiment 3 The 2WD4 beamforming network in the same. The main (auxiliary) antenna device can use the auxiliary beam to simulate the main beam, and the simulated horizontal pattern of the main beam is shown in FIG. 12 . The control channel of the main beam formed by simulation is not distorted, and the radiation pattern in the main radiation direction has no obvious depression.

In this embodiment, the main antenna device and the auxiliary antenna device share the same 4-column antenna array and the same two 2x4 beamforming networks. The cable length between each antenna transceiver channel and the 2-drive 4-beamforming network is consistent, and the antenna transceiver channel is also used to correct the received and sent signals, so that the 4 antenna transceiver channels receive and send signals Amplitude and phase changes are consistent. Under the control of the baseband processing module, the amplitude and phase weighting of the received and transmitted signals are weighted by the antenna transceiver channel, so that the two auxiliary beams formed by the 2-driver-4 beamforming network can be weighted and synthesized into one main beam. In this way, the functions of the main antenna device and the auxiliary antenna device are simultaneously realized on the same antenna array and beamforming network, and the control signal is transmitted and received through the main beam, and the service signal is transmitted and received through the main beam and the auxiliary beam, so as to improve the system capacity at the same time Essential coverage guaranteed.

Fig. 13 is a schematic structural diagram of an antenna provided by Embodiment 6 of the present invention. As shown in FIG. 13 , the antenna 88 includes a main antenna device 801 and an auxiliary antenna device 802;

The main antenna device 801 is used to form a main beam, and is used to receive and send control signals and service signals within the range of the main beam under the control of the baseband processing module of the base station;

The secondary antenna device 802 is used to form a secondary beam, and to receive and send service signals within the coverage of the secondary beam under the control of the baseband processing module.

Wherein, the main antenna device 801 is mainly used to complete basic coverage, and the auxiliary antenna device 802 is used to improve capacity.

As a feasible implementation, on the basis of the above-mentioned embodiment shown in FIG. 13 , the main antenna device includes M ₁ columns of first antenna arrays, where M ₁ is an integer greater than or equal to 1; the first antenna array Including L ₁ polarization directions, the L ₁ is an integer greater than or equal to 1; the M ₁ first antenna array is connected to the M ₁ × L ₁ main antenna transceiver channels; the first antenna array and the baseband processing The module connection is used to receive and send control signals and service signals within the coverage of the main beam under the control of the baseband processing module.

Specifically, the main antenna device 801 and the auxiliary antenna device 802 may include respective antenna arrays and transceiver channels, and the auxiliary antenna device further includes a beam forming network. Among them, when the antenna is an active antenna, the transceiver channel, antenna array, and beam network are integrated in the radome; when the antenna is a passive antenna, the antenna array and beam network are integrated in the radome, and the transceiver channel is set separately in the RF module. In addition, the transceiver channel of the main antenna device 801 can select the main beam under the control of the baseband processing module of the base station, and the beam forming network and the transceiver channel of the auxiliary antenna device 802 can form and select the secondary beam under the control of the baseband processing module of the base station.

Optionally, the main antenna device may include a column of first antenna arrays, and the first antenna array includes two polarization directions; the main antenna device further includes two main antenna transceiving channels.

Optionally, the auxiliary antenna device may include M ₂ second antenna arrays, where M ₂ is an integer greater than 1; the second antenna array includes L ₂ polarization directions, where L ₂ is an integer greater than or equal to 1; The auxiliary antenna device also includes L ₂ auxiliary beam forming networks, each auxiliary beam forming network is an N ₂ × M ₂ beam forming network, and each N ₂ × M ₂ beam forming network acts on the same pole in the second antenna array N ₂ auxiliary beams are formed by a multi-dimensional array, and each N ₂ is driven by an M beam forming network to connect N ₂ auxiliary antenna transceiver channels, and the N ₂ is an integer greater than 1; the second antenna array is connected to the baseband processing module, and is used Under the control of the baseband processing module, service signals are received and sent within the coverage of the auxiliary beam.

Optionally, the auxiliary antenna device may also include 3 rows of the second antenna array, the second antenna array includes 2 polarization directions, and the auxiliary antenna device also includes 2 2 x 3 beamforming networks, each with 2 Drive 3 beamforming networks to connect 2 auxiliary antenna transceiver channels; or, the auxiliary antenna device includes 4 second antenna arrays, the second antenna array includes 2 polarization directions, and the auxiliary antenna device also includes 2 2 driver 4-beam forming network, each 2-drive 4-beam forming network connects 2 auxiliary antenna transceiver channels.

As another feasible implementation mode, on the basis of the above-mentioned embodiment shown in FIG. The main antenna device and the auxiliary antenna device correspond to the same M ₃ third antenna array, the third antenna array includes L ₃ polarization directions, the M ₃ is an integer greater than 1, and the L ₃ is greater than or equal to 1 Integer; the main antenna device and the auxiliary antenna device correspond to the same L ₃ beamforming networks, each beamforming network is an N ₃ × M ₃ beamforming network, and each N ₃ × M ₃ beamforming network acts on the third The co-polarized array in the antenna array forms N ₃ auxiliary beams, and each N ₃ drives M ₃ beamforming network to connect N ₃ antenna transceiver channels, and N ₃ is an integer greater than 1; for each polarization direction, the N The ₃ antenna transceiver channels are used to turn on or off under the control of the baseband processing module, so as to select the secondary beam; for each polarization direction, the N ₃ antenna transceiver channels are also used for the control of the baseband processing module Amplitude and phase weighting of the signal received and sent under, so that N ₃ auxiliary beams are weighted and synthesized into one main beam; the third antenna array is used to receive and send the control signal and the control signal within the coverage of the main beam A service signal, and/or, receive and send the service signal within the coverage of the auxiliary beam.

In an implementation scenario where the main antenna device 801 and the auxiliary antenna device 802 may respectively include their own antenna arrays and transceiver channels, the main antenna device 801 may consist of a main antenna array 8011 and a main antenna transceiver channel group 8012 . The main antenna transceiver channel group is connected to the baseband processing module of the base station, and receives and sends control signals within the coverage of the main beam under the control of the baseband processing module of the base station. The auxiliary antenna device 802 is composed of an auxiliary antenna array 8021 , an auxiliary beamforming network 8022 and an auxiliary antenna transceiving channel group 8023 .

Among them, the main antenna array 8011 has the ability to support multiple frequency bands. It may be an array of M ₁ columns, where M ₁ is an integer greater than or equal to 1, and there may be L ₁ polarization directions of the array, and L ₁ is an integer greater than or equal to 1. Each main antenna transceiving channel group 8012 of the main antenna corresponds to a polarization direction; the main antenna transceiving channel group 8012 corresponding to each polarization direction of the main antenna array 8011 includes M ₁ main antenna transceiving channels.

Specifically, when the main antenna array 8011 is single-polarized, that is, when L ₁ =1, M ₁ first antenna arrays are connected to M ₁ main antenna transceiver channels; when the main antenna array 8011 is multi-polarized, that is, L ₁ >1 When , M ₁ columns of first antenna arrays are connected to M ₁ ×L ₁ main antenna transmitting and receiving channels.

The auxiliary antenna array 8021 can also be in a single-column or multi-column structure, and can be single-polarized or multi-polarized. Assuming that the auxiliary antenna array 1021 has _M2 columns, where _M2 is an integer greater than ₁ , the polarization directions of the array can be L2, and L2 is an integer greater than or equal to ₁ ; each auxiliary antenna transceiver channel group 8023 of the auxiliary antenna Corresponding to one polarization direction, there are L ₂ in total. The secondary antenna transceiver channel group 8023 corresponding to each polarization direction of the array includes N ₂ transceiver channels, where N ₂ is an integer greater than 1.

The auxiliary antenna device 802 also includes L ₂ auxiliary beamforming networks 8022, each auxiliary beamforming network 8022 is an N ₂ × M ₂ beam forming network, and each N ₂ × M ₂ beam forming network acts on the second antenna array The co-polarized array forms N ₂ auxiliary beams, and each N ₂ and M ₂ beamforming network connects N ₂ auxiliary antenna transceiver channels; the N ₂ auxiliary antenna transceiver channels corresponding to each polarization direction are used in the base station It is turned on or off under the control of the baseband processing module, so as to select the auxiliary beam.

In the implementation scenario where the main antenna device 801 and the auxiliary antenna device 802 correspond to the same antenna array, beamforming network, and transceiver channel, the main antenna device and the auxiliary antenna device may also correspond to the same M ₃ antenna arrays, and the M ₃ antenna arrays Including L ₃ polarization directions, M ₃ is an integer greater than 1, and L ₃ is an integer greater than or equal to 1; the antenna array can be used to receive and transmit control signals and service signals within the coverage of the main beam, and/ Or, receive and send service signals within the coverage of the auxiliary beam.

The main antenna device 801 and the auxiliary antenna device 802 correspond to the same L3 beamforming networks, each beamforming network is an N3 _{× M3} beamforming network, and each _{N3 × M3} beamforming network is connected to _N3 antennas for transceiver channel, N ₃ is an integer greater than 1.

Optionally, the N ₃ antenna transceiving channels corresponding to each polarization direction are used to be turned on or off under the control of the baseband processing module of the base station to select the secondary beam; the L ₃ ×N ₃ antenna transceiving channels are also It is used to correct the received and transmitted signals, so that the amplitude changes and phase changes of the signals received and transmitted by the L ₃ ×N ₃ antenna transceiver channels are consistent.

Optionally, for each polarization direction, the lengths of connecting cables between the N ₃ antenna transceiving channels and the N ₃ or M ₃ beamforming networks are consistent.

Specifically, each antenna transceiver channel is _of the same length as the connecting cable between the N3 and M3 beamforming networks _; corresponding to each polarization direction, the N3 antenna transceiver channels are also used for the control _of the baseband processing module of the base station The magnitude and phase weighting of the received and transmitted signals are weighted so that the N ₃ secondary beams formed by the N ₃ drive M ₃ beam forming network are weighted and synthesized into 1 main beam.

In this embodiment, under the control of the baseband processing module of the base station, the main antenna device in the antenna receives and sends control signals and service signals within the coverage area of the main beam; the auxiliary antenna device receives and sends service signals within the coverage area of the auxiliary beam . In this way, the control signal is sent and received through the main beam, the service signal is sent and received at the main beam and the auxiliary beam, and the auxiliary beam can be multiplexed, so as to improve the capacity of the system and ensure basic coverage at the same time.

FIG. 14 is a schematic structural diagram of a base station provided by Embodiment 7 of the present invention. As shown in Figure 14, the base station 99 includes a baseband processing module 901, which is used to control the main antenna device in the antenna to receive and send control signals and service signals within the main beam range; the auxiliary antenna device in the control antenna is covered by the auxiliary beam Receive and send business signals within the range.

Optionally, the baseband processing module is specifically configured to: when the beam with the largest reference signal received power RSRP is the main beam, if the absolute value of the RSRP difference between the main beam and the auxiliary beam with the largest RSRP is less than the first set If the threshold value is set, and the number of multiplexable auxiliary beam set elements is greater than 1, the traffic channel covered by the main beam with the largest RSRP is switched to the auxiliary beam with the largest RSRP.

Optionally, the elements in the multiplexable auxiliary beam set are the auxiliary beam with the largest RSRP and the auxiliary beam whose absolute value of the RSRP difference with the auxiliary beam with the largest RSRP is greater than the second set threshold.

Further, as another feasible implementation manner, the baseband processing module 901 may include a baseband beam forming module 9011 and a baseband beam application module 9012 .

The baseband beamforming module 9011 determines which secondary beam transceiving channels are used to receive and transmit secondary beams by weighting the amplitude and phase of signals received and transmitted by the antenna.

The baseband beam application module 9012 is used to control the main antenna device of the antenna to receive and send control signals and service signals within the range of the main beam; to control the auxiliary antenna device in the antenna to receive and send service signals within the coverage of the auxiliary beam.

Specifically, the baseband processing module 901 can be used to: when the beam with the largest reference signal received power RSRP is the main beam, if the absolute value of the RSRP difference between the main beam and the auxiliary beam with the largest RSRP is less than the first set threshold value, And if the number of multiplexable auxiliary beam set elements is greater than 1, switch the traffic channel covered by the main beam with the largest RSRP to the auxiliary beam with the largest RSRP. The elements in the multiplexable auxiliary beam set are the auxiliary beam with the largest RSRP and the auxiliary beam whose absolute value of RSRP difference with the auxiliary beam with the largest RSRP is greater than the second set threshold.

Usually, the baseband processing module 901 is set inside a baseband processing unit (Base band Unit, BBU for short) of the base station. Specifically, when the baseband beamforming module 9011 in the baseband processing module 901 weights the amplitude and phase of the signals sent and received by the antenna, its amplitude and phase weighted weights can be specifically represented by a multidimensional array, and each The element may correspond to a secondary beam transmitting and receiving channel of the antenna, and may be represented by 1 or 0. When the element is 1, it means that the corresponding auxiliary beam transceiver channel in the antenna is opened, and the auxiliary beam can be received and sent through the auxiliary beam transceiver channel; when the element is 0, it means that the corresponding auxiliary beam transceiver channel is closed and no auxiliary beam Beam reception and transmission. The weights of the baseband beamforming module 6021 can be [1 0] and [0 1], corresponding to two auxiliary beams respectively. When the weight is [1 1], the two auxiliary beams are combined to simulate the main Reception and transmission of signals within the beam.

Specifically, the baseband beam application module 9012 in the baseband processing module 901 can control the main beam in the antenna according to factors such as the pilot support capability of the antenna, user signal transmission power, and reference signal receiving power (Reference Signal Receiving Power, referred to as RSRP). The antenna array of the antenna device receives and sends control signals and service signals within the coverage area of the main beam, and the antenna array of the auxiliary antenna device in the control antenna receives and sends service signals within the coverage area of the auxiliary beam.

For example: there is a set of multiplexable auxiliary beams, and the elements in this set are the auxiliary beams with the largest RSRP among the auxiliary beams and the auxiliary beams whose absolute value of the RSRP difference with the auxiliary beam with the largest RSRP is greater than the second set threshold . Then when the beam with the largest RSRP is the main beam, if the absolute value of the difference between the main beam and the auxiliary beam with the largest RSRP is less than the first set threshold value, and the number of multiplexable auxiliary beam set elements is greater than 1, the baseband The baseband beam application module 9012 in the processing module 901 may switch the traffic channel covered by the main beam with the largest RSRP to the auxiliary beam covered by the largest RSRP.

In this embodiment, the baseband processing module of the base station controls the antenna array of the main antenna device in the antenna to receive and transmit within the coverage of the main beam according to factors such as the pilot frequency support capability of the antenna, the user signal transmission power and the reference signal reception power. The control signal and the service signal control the antenna array of the auxiliary antenna device in the antenna to receive and send the service signal within the coverage area of the auxiliary beam. In this way, while ensuring the basic coverage of the base station, the capacity of the base station is improved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (21)

1. An antenna system, comprising: a main antenna device, an auxiliary antenna device and a baseband processing module; The main antenna device, connected to the baseband processing module, is used to form a main beam, and is used to receive and send control signals and service signals within the coverage of the main beam under the control of the baseband processing module; The secondary antenna device is connected to the baseband processing module, used to form a secondary beam, and used to receive and send the service signal within the coverage of the secondary beam under the control of the baseband processing module; The baseband processing module is configured to control the main antenna device to receive and send control signals and the service signals within the coverage area of the main beam, and control the auxiliary antenna device to receive and send signals within the coverage area of the auxiliary beam The business signal. 2. The antenna system according to claim 1, characterized in that, the main antenna device comprises M1 columns of the _first antenna array, and the M1 is an integer greater than or equal to ₁ ; the first antenna array comprises L ₁ polarization directions, where L ₁ is an integer greater than or equal to 1; the M ₁ first antenna arrays are connected to M ₁ × L ₁ main antenna transceiver channels; The first antenna array is connected to the baseband processing module for receiving and sending control signals and service signals within the coverage of the main beam under the control of the baseband processing module. 3. The antenna system according to claim 2, wherein the main antenna device comprises 1 column of the first antenna array, and the first antenna array includes 2 polarization directions; the main antenna device It also includes 2 said main antenna transceiving channels. 4. The antenna system according to any one of claims 1-3, wherein the auxiliary antenna device comprises M ₂ second antenna arrays, and M ₂ is an integer greater than 1; the second antenna The array includes L ₂ polarization directions, and the L ₂ is an integer greater than or equal to 1; the auxiliary antenna device also includes L ₂ auxiliary beamforming networks, and each of the auxiliary beamforming networks is N ₂ Driving M ₂ beamforming networks, each of the N ₂ driving M ₂ beamforming networks acts on the co-polarized array in the second antenna array to form N ₂ auxiliary beams, each of the N ₂ driving M ₂ beamforming networks Connecting N ₂ auxiliary antenna transceiver channels, where N ₂ is an integer greater than 1; The second antenna array is connected to the baseband processing module, and is configured to receive and send service signals within the coverage of the auxiliary beam under the control of the baseband processing module. 5. The antenna system according to claim 4, wherein the auxiliary antenna device comprises 3 rows of the second antenna array, and the second antenna array includes 2 polarization directions, and in the auxiliary antenna device It also includes 2 2×3 beamforming networks, each of the 2×3 beamforming networks is connected to 2 of the auxiliary antenna transceiver channels; or, The auxiliary antenna device includes 4 rows of the second antenna array, the second antenna array includes 2 polarization directions, and the auxiliary antenna device also includes 2 2 x 4 beamforming networks, each of the 2 Four beamforming networks are used to connect the two auxiliary antennas for transmitting and receiving channels. 6. The antenna system according to claim 1, wherein the main antenna device and the auxiliary antenna device correspond to the same M ₃ third antenna array, and the third antenna array includes L ₃ polarizations direction, the M ₃ is an integer greater than 1, and the L ₃ is an integer greater than or equal to 1; the main antenna device and the auxiliary antenna device correspond to the same L ₃ beamforming networks, and each of the The beamforming network is an N3×M3 beamforming network, and each of the N3 _× M3 beamforming networks acts _on the _copolar array in the _third antenna array to form N3 auxiliary beams, and each _of the N ₃ drives M ₃ beamforming network to connect N ₃ said antenna transceiver channels, said N ₃ is an integer greater than 1; For each polarization direction, the N ₃ antenna transceiving channels are used to open or close under the control of the baseband processing module, so as to select the auxiliary beam; For each polarization direction, the N ₃ antenna transceiving channels are also used for amplitude and phase weighting of signals received and transmitted under the control of the baseband processing module, so that the N ₃ auxiliary beams weighted synthesis of one main beam; The third antenna array is configured to receive and send the control signal and the service signal within the coverage of the main beam, and/or receive and send the service signal within the coverage of the secondary beam. 7. The antenna system according to claim 6, wherein the L ₃ ×N ₃ antenna transceiving channels are also used for: correcting received and transmitted signals so that the L ₃ ×N The amplitude and phase changes of the signals received and transmitted by the _three antenna transceiving channels are consistent. 8. The antenna system according to claim 6 or 7, characterized in that, for each polarization direction, the connecting cables between the N ₃ antenna transceiving channels and the N ₃ driver M ₃ beamforming networks Same length. 9. The antenna system according to any one of claims 1-3, 5-7, wherein the baseband processing module is specifically configured to: when the beam with the largest reference signal received power (RSRP) is the main beam, if the If the absolute value of the RSRP difference between the main beam and the auxiliary beam with the largest RSRP is less than the first set threshold value, and the number of multiplexable auxiliary beam set elements is greater than 1, then the main beam with the largest RSRP The traffic channel covered by the beam is switched to the secondary beam covered by the maximum RSRP. 10. The antenna system according to claim 9, wherein the elements in the reusable auxiliary beam set are the auxiliary beam with the largest RSRP and the absolute value of the RSRP difference between the auxiliary beam and the auxiliary beam with the largest RSRP Secondary beams whose values are greater than the second set threshold. 11. An antenna, characterized in that it comprises a main antenna device and an auxiliary antenna device; The main antenna device is used to form a main beam, and is used to receive and send control signals and service signals within the range of the main beam under the control of the baseband processing module of the base station; The secondary antenna device is used to form a secondary beam, and to receive and send the service signal within the coverage of the secondary beam under the control of the baseband processing module. 12. The antenna according to claim 11, wherein the main antenna device comprises M1 _first antenna arrays, and M1 is an integer greater than or equal to ₁ ; the first antenna array comprises L ₁ polarization direction, the L ₁ is an integer greater than or equal to 1; the M ₁ first antenna array is connected to the M ₁ × L ₁ main antenna transceiver channels; The first antenna array is connected to the baseband processing module for receiving and sending control signals and service signals within the coverage of the main beam under the control of the baseband processing module. 13. The antenna according to claim 12, wherein the main antenna device comprises one column of the first antenna array, and the first antenna array includes two polarization directions; It also includes 2 said main antenna transceiving channels. 14. The antenna according to any one of claims 11-13, wherein the auxiliary antenna device comprises M ₂ second antenna arrays, and M ₂ is an integer greater than 1; the second antenna array Including L ₂ polarization directions, the L ₂ is an integer greater than or equal to 1; the auxiliary antenna device also includes L ₂ auxiliary beamforming networks, and each of the auxiliary beamforming networks is N _{2 M2} beamforming network, each of the _N2 and _M2 beamforming networks acts on the co-polarized array in the second antenna array to form _N2 auxiliary beams, and each of the _N2 and _M2 beamforming networks are connected N ₂ said auxiliary antenna transceiving channels, said N ₂ being an integer greater than 1; The second antenna array is connected to the baseband processing module, and is configured to receive and send service signals within the coverage of the auxiliary beam under the control of the baseband processing module. 15. The antenna according to claim 14, wherein the auxiliary antenna device comprises three rows of the second antenna array, the second antenna array includes two polarization directions, and the auxiliary antenna device further includes Including two 2×3 beamforming networks, each of the 2×3 beamforming networks is connected to 2 of the auxiliary antenna transceiver channels; or, The auxiliary antenna device includes 4 rows of the second antenna array, the second antenna array includes 2 polarization directions, and the auxiliary antenna device also includes 2 2 x 4 beamforming networks, each of the 2 Four beamforming networks are used to connect the two auxiliary antennas for transmitting and receiving channels. 16. The antenna according to claim 11, wherein the main antenna device and the auxiliary antenna device correspond to the same M ₃ third antenna array, and the third antenna array includes L ₃ polarization directions , the M ₃ is an integer greater than 1, and the L ₃ is an integer greater than or equal to 1; the main antenna device and the auxiliary antenna device correspond to the same L ₃ beamforming networks, each of the The beamforming network is an N3×M3 beamforming network, and each of the N3 _× M3 beamforming networks acts _on the _copolar array in the _third antenna array to form N3 auxiliary beams, and each _of the _N3 Driving M ₃ beamforming networks to connect N ₃ antenna transceiver channels, where N ₃ is an integer greater than 1; For each polarization direction, the N ₃ antenna transceiving channels are used to open or close under the control of the baseband processing module, so as to select the auxiliary beam; For each polarization direction, the N ₃ antenna transceiving channels are also used for amplitude and phase weighting of signals received and transmitted under the control of the baseband processing module, so that the N ₃ auxiliary beams weighted synthesis of one main beam; The third antenna array is configured to receive and send the control signal and the service signal within the coverage of the main beam, and/or receive and send the service signal within the coverage of the auxiliary beam. 17. The antenna according to claim 16, wherein the L ₃ ×N ₃ antenna transceiving channels are also used for: correcting received and transmitted signals, so that the L ₃ ×N ₃ The amplitude and phase changes of the signals received and transmitted by the two antenna transceiving channels are consistent. 18. The antenna according to claim 16 or 17, characterized in that, for each polarization direction, the length of the connecting cable between the N ₃ antenna transceiving channels and the N ₃ drive M ₃ beamforming network unanimous. 19. A base station, comprising: a baseband processing module; The baseband processing module is used to control the main antenna device in the antenna to receive and send control signals and service signals within the range of the main beam; to control the auxiliary antenna device in the antenna to receive and send the service within the coverage area of the auxiliary beam Signal. 20. The base station according to claim 19, wherein the baseband processing module is specifically configured to: when the beam with the largest reference signal received power (RSRP) is the main beam, if the main beam and the beam with the largest RSRP If the absolute value of the RSRP difference between the auxiliary beams is less than the first set threshold value, and the number of multiplexable auxiliary beam set elements is greater than 1, then the traffic channel covered by the main beam with the largest RSRP is switched to the set Coverage of the secondary beam with the maximum RSRP. 21. The base station according to claim 20, wherein the elements in the multiplexable auxiliary beam set are the auxiliary beam with the largest RSRP and the absolute value of the RSRP difference between the auxiliary beam with the largest RSRP Secondary beams larger than the second set threshold.