CN104639217B

CN104639217B - antenna system, antenna and base station

Info

Publication number: CN104639217B
Application number: CN201310554810.7A
Authority: CN
Inventors: 赵建平; 王琳琳; 马晓慧
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-11-08
Filing date: 2013-11-08
Publication date: 2018-03-27
Anticipated expiration: 2033-11-08
Also published as: WO2015067152A1; CN104639217A

Abstract

The invention discloses a kind of antenna system, antenna and base station.The antenna system includes：Primary antenna device, auxiliary antenna assembly and baseband processing module；The primary antenna device, is connected with the baseband processing module, for forming main beam, and for receiving and sending control signal and service signal in the main beam coverage under the control of the baseband processing module；The auxiliary antenna assembly, is connected with the baseband processing module, for forming auxiliary wave beam, and for receiving and sending the service signal in the auxiliary beam coverage under the control of the baseband processing module；The baseband processing module, for controlling the primary antenna device to be received in the main beam coverage and sending control signal and service signal, control the auxiliary antenna assembly that service signal is received and sent in the auxiliary beam coverage, so as to ensure basic covering while power system capacity is improved.

Description

Antenna system, antenna and base station

Technical Field

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

Background

An antenna system is a system that transmits and receives radio communication signals by transmitting information using electromagnetic waves. With the rapid development of wireless communication technology and the ever-increasing demands on the capacity, transmission rate, etc. of communication systems, a series of new antenna system architectures are proposed.

The technical scheme of the prior art for improving the system capacity is that a plurality of columns of small-interval array antennas are adopted, and the antennas are characterized in that the small-interval array antennas are adopted to split signal single beams into multiple beams, so that space division multiple access (namely multi-user parallel transmission) is realized, and the system capacity is greatly improved.

However, the multi-column small-spacing array antenna does not support wide beams and cannot ensure basic coverage; and due to the broadband characteristic of the antenna array, the quality of the high-frequency-band beam is deteriorated, and the requirement of multi-system integration cannot be economically met.

Disclosure of Invention

The embodiment of the invention provides an antenna system, an antenna and a base station, which can ensure basic coverage while improving system capacity.

In a first aspect, an embodiment of the present invention provides an antenna system, including: the antenna device comprises a main antenna device, an auxiliary antenna device and a baseband processing module;

the main antenna device is connected with the baseband processing module and used for forming a main beam and receiving and transmitting a control signal and a service signal within the coverage range of the main beam under the control of the baseband processing module;

the auxiliary antenna device is connected with the baseband processing module and used for forming an auxiliary beam and receiving and transmitting service signals in the coverage range of the auxiliary beam under the control of the baseband processing module;

and the baseband processing module is used for controlling the main antenna device to receive and send the control signal and the service signal in the coverage range of the main beam and controlling the auxiliary antenna device to receive and send the service signal in the coverage range of the auxiliary beam.

With reference to the first aspect, in a first implementation manner, the main antenna device includes M₁Column first antenna array, M₁Is an integer greater than or equal to 1; the first antenna array includes L₁A direction of polarization, L₁Is an integer greater than or equal to 1; m₁The first antenna array is connected to M₁×L₁A main antenna transmit-receive channel; the first antenna array is connected with the baseband processing module and used for receiving and sending control signals and service signals in the coverage area of the main beam under the control of the baseband processing module.

With reference to the first aspect and the first implementation, in a second implementation, the main antenna device includes 1 column of the first antenna array, and the first antenna array includes 2 polarization directions; the main antenna device also comprises 2 main antenna transceiving channels.

With reference to the first aspect and the first two embodiments, in a third embodiment, the secondary antenna device includes M₂Column second antenna array, M₂Is an integer greater than 1; the second antenna array comprises L₂A direction of polarization, L₂Is an integer greater than or equal to 1; the auxiliary antenna device also comprises L₂A plurality of secondary beam forming networks, each secondary beam forming network being N₂Driving M₂A beam forming network of N each₂Driving M₂The beam forming network acts on the same polarization array in the second antenna array to form N₂A secondary beam of each N₂Driving M₂Beamforming network connection N₂Individual auxiliary antenna transmit-receive channel, N₂Is an integer greater than 1; the second antenna array is connected with the baseband processing module and used for receiving and sending service signals within the coverage range of the auxiliary beam under the control of the baseband processing module.

With reference to the first aspect and the first three embodiments, in a fourth embodiment, the auxiliary antenna apparatus includes 3 columns of second antenna arrays, each second antenna array includes 2 polarization directions, the auxiliary antenna apparatus further includes 2-in-2 beam forming networks, and each 2-in-3 beam forming network is connected to 2 auxiliary antenna transceiving channels; or, the auxiliary antenna device includes 4 columns of second antenna arrays, the second antenna arrays include 2 polarization directions, the auxiliary antenna device further includes 2-by-4 beam forming networks, and each 2-by-4 beam forming network is connected to 2 auxiliary antenna transceiving channels.

With reference to the first aspect and the first four embodiments, in a fifth embodiment, the main antenna device and the auxiliary antenna device correspond to the same M₃Column third antenna array, the third antenna array comprising L₃Direction of polarization, M₃Is an integer greater than 1, L₃Is an integer greater than or equal to 1; the main antenna device and the auxiliary antenna device correspond to the same L₃A plurality of beam forming networks, each beam forming network being N₃Driving M₃A beam forming network of N each₃Driving M₃The beam forming network acts on the same polarization array in the third antenna array to form N₃A secondary beam of each N₃Driving M₃Beamforming network connection N₃Individual antenna transmit-receive channel, N₃Is an integer greater than 1; for each polarization direction, N₃The antenna transceiving channels are used for being opened or closed under the control of the baseband processing module, so that the auxiliary wave beams are selected; for each polarization direction, N₃The antenna transceiving channels are also used for carrying out amplitude and phase weighting on the received and transmitted signals under the control of the baseband processing module so as to enable N to be₃Driving M₃N of beam forming network formation₃The auxiliary beams are weighted to synthesize 1 main beam; and the third antenna array is used for receiving and transmitting the control signal and the service signal in the coverage range of the main beam and/or receiving and transmitting the service signal in the coverage range of the auxiliary beam.

With reference to the first aspect and the first five embodiments, in a sixth embodiment, L₃×N₃The antenna transceiving channels are also used for correcting received and transmitted signals so that L is₃×N₃The amplitude phase change of the signals received and transmitted by the antenna transceiving channels is consistent.

With reference to the first aspect and the first six embodiments, in a seventh embodiment, N is the number of polarization directions₃A receiving and transmitting channel of antenna and N₃Driving M₃The connection cables between the beam forming networks are of uniform length.

With reference to the first aspect and the first seven embodiments, in an eighth embodiment, the baseband processing module is specifically configured to, when a beam with the largest reference signal received power RSRP is a primary beam, switch a traffic channel covered by the primary beam with the largest RSRP to be covered by the secondary beam with the largest RSRP if an absolute value of an RSRP difference between the primary beam and the secondary beam with the largest RSRP is smaller than a first set threshold and a number of reusable secondary beam set elements is greater than 1.

With reference to the first aspect and the first eight embodiments, in a ninth embodiment, a secondary beam whose element in the secondary beam set is the maximum RSRP and a secondary beam whose absolute value of the RSRP difference from the maximum RSRP is greater than a second set threshold may be multiplexed.

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 for forming a main beam and receiving and sending a control signal and a service signal within the range of the main beam under the control of a baseband processing module of the base station; and the auxiliary antenna device is used for forming an auxiliary beam and receiving and transmitting a service signal in the coverage range of the auxiliary beam under the control of the baseband processing module.

With reference to the second aspect, in a first embodiment, the main antenna device includes M₁Column first antenna array, M₁Is an integer greater than or equal to 1; the first antenna array includes L₁A direction of polarization, L₁Is an integer greater than or equal to 1; m₁The first antenna array is connected to M₁×L₁A main antenna transmit-receive channel; the first antenna array is connected with the baseband processing module and used for receiving and sending control signals and service signals in the coverage area of the main beam under the control of the baseband processing module.

With reference to the second aspect and the first embodiment, in the second embodiment, the main antenna device includes 1 column of the first antenna array, and the first antenna array includes 2 polarization directions; the main antenna device also comprises 2 main antenna transceiving channels.

With reference to the second aspect and the first two embodiments, in a third embodiment, the secondary antenna device comprises M₂Column second antenna array, M₂Is an integer greater than 1; the second antenna array comprises L₂A direction of polarization, L₂Is an integer greater than or equal to 1; the auxiliary antenna device also comprises L₂A plurality of secondary beam forming networks, each secondary beam forming network being N₂Driving M₂A beam forming network of N each₂Driving M₂The beam forming network acts on the same polarization array in the second antenna array to form N₂A secondary beam of each N₂Driving M₂Beamforming network connection N₂Individual auxiliary antenna transmit-receive channel, N₂Is an integer greater than 1; the second antenna array is connected with the baseband processing module and used for receiving and sending service signals within the coverage range of the auxiliary beam under the control of the baseband processing module.

With reference to the second aspect and the first three embodiments, in a fourth embodiment, the auxiliary antenna apparatus includes 3 columns of second antenna arrays, each second antenna array includes 2 polarization directions, the auxiliary antenna apparatus further includes 2-in-2 beam forming networks, and each 2-in-3 beam forming network is connected to 2 auxiliary antenna transceiving channels; or, the auxiliary antenna device includes 4 columns of second antenna arrays, the second antenna arrays include 2 polarization directions, the auxiliary antenna device further includes 2-by-4 beam forming networks, and each 2-by-4 beam forming network is connected to 2 auxiliary antenna transceiving channels.

With reference to the second aspect and the first three embodiments, in the fourth embodiment, the main antenna device and the auxiliary antenna device correspond to the same M₃Column third antenna array, the third antenna array comprising L₃Direction of polarization, M₃Is an integer greater than 1, L₃Is an integer greater than or equal to 1; the main antenna device and the auxiliary antenna device correspond to the same L₃A plurality of beam forming networks, each beam forming network being N₃Driving M₃A beam forming network of N each₃Driving M₃The beam forming network acts on the same polarization array in the third antenna array to form N₃A secondary beam of each N₃Driving M₃Beamforming network connection N₃Individual antenna transmit-receive channel, N₃Is an integer greater than 1; for each polarization direction, N₃The antenna transceiving channels are used for being opened or closed under the control of the baseband processing module, so that the auxiliary wave beams are selected; for each polarization direction, N₃The antenna transceiving channels are also used for carrying out amplitude and phase weighting on the received and transmitted signals under the control of the baseband processing module so as to enable N to be₃The auxiliary beams are weighted to synthesize 1 main beam; and the third antenna array is used for receiving and transmitting the control signal and the service signal in the coverage range of the main beam and/or receiving and transmitting the service signal in the coverage range of the auxiliary beam.

In a fifth embodiment, combining the second aspect with the first four embodiments, L₃×N₃Each antenna transceiving channel is further configured to: correcting the received and transmitted signals so that L is₃×N₃The amplitude phase change of the signals received and transmitted by the antenna transceiving channels is consistent.

With reference to the second aspect and the first five embodiments, in a sixth embodiment, for each polarization direction, N₃A receiving and transmitting channel of antenna and N₃Driving M₃The connection cables between the beam forming networks are of uniform length.

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

the base band processing module is used for controlling a main antenna device in the antenna to receive and send a control signal and a service signal in a main beam range; and controlling the auxiliary antenna device in the antenna to receive and transmit the service signal in the auxiliary beam coverage range.

With reference to the second aspect, in a first implementation manner, the baseband processing module is specifically configured to: when the beam with the maximum Reference Signal Received Power (RSRP) is the main beam, if the absolute value of the RSRP difference value between the main beam and the auxiliary beam with the maximum RSRP is smaller than a first set threshold value and the number of the reusable auxiliary beam set elements is greater than 1, switching the service channel covered by the main beam with the maximum RSRP to the auxiliary beam with the maximum RSRP.

With reference to the second aspect and the first embodiment, in a second embodiment, a secondary beam with the element in the secondary beam set having the maximum RSRP and a secondary beam with the maximum RSRP and having an absolute value of RSRP difference greater than a second set threshold value may be multiplexed.

The antenna system, the antenna and the base station provided by the embodiment of the invention comprise a main antenna device, an auxiliary antenna device and a baseband processing module. The main antenna device is connected with the baseband processing module and used for forming a main beam and receiving and transmitting a control signal and a service signal within the coverage range of the main beam under the control of the baseband processing module; the auxiliary antenna device is connected with the baseband processing module and used for forming an auxiliary beam and receiving and transmitting service signals in the coverage range of the auxiliary beam under the control of the baseband processing module; and the baseband processing module is used for controlling the main antenna device to receive and send the control signal and the service signal in the coverage range of the main beam and controlling the auxiliary antenna device to receive and send the service signal in the coverage range of the auxiliary beam. 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 that the capacity of the system is improved, and the basic coverage is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an antenna system according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an antenna system according to a second embodiment of the present invention;

fig. 3 is a horizontal directional diagram of a main antenna beam formed by the main antenna device according to the second embodiment of the present invention;

fig. 4 is a schematic structural diagram of a 2-by-3 beamforming network of an auxiliary antenna according to a second embodiment of the present invention;

fig. 5 is a horizontal directional diagram of an auxiliary antenna beam formed by the auxiliary antenna apparatus according to the second embodiment of the present invention;

fig. 6 is a schematic structural diagram of an antenna system according to a third embodiment of the present invention;

fig. 7 is a schematic structural diagram of a 2-by-4 beamforming network of an auxiliary antenna according to a third embodiment of the present invention;

fig. 8 is a secondary beam horizontal pattern of a secondary antenna apparatus according to a third embodiment of the present invention;

fig. 9 is a schematic structural diagram of an antenna system according to a fourth embodiment of the present invention;

fig. 10 is a horizontal directional diagram of a main beam simulated according to the fourth embodiment of the present invention;

fig. 11 is a schematic structural diagram of an antenna system according to a fifth embodiment of the present invention;

fig. 12 is a horizontal directional diagram of a main beam simulated according to the fifth embodiment of the present invention;

fig. 13 is a schematic structural diagram of an antenna according to a sixth embodiment of the present invention;

fig. 14 is a schematic structural diagram of a base station according to a seventh embodiment of the present invention.

Detailed Description

In order to make the objects, 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 with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is a schematic structural diagram of an antenna system according to an embodiment of the present invention. As shown in fig. 1, the present invention provides an antenna system 11 including: a main antenna device 101, an auxiliary antenna device 102 and a baseband processing module 103;

a main antenna device 101 connected to the baseband processing module 103, configured to form a main beam, and receive and transmit a control signal and a service signal within a main beam coverage area under the control of the baseband processing module 103;

an auxiliary antenna device 102, connected to the baseband processing module 103, for forming an auxiliary beam, and receiving and transmitting a service signal within the coverage of the auxiliary beam under the control of the baseband processing module 103;

the baseband processing module 103 is configured to control the main antenna apparatus 101 to receive and transmit a control signal and a service signal within a coverage area of the main beam, and control the auxiliary antenna apparatus 102 to receive and transmit a service signal within a coverage area of the auxiliary beam.

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 configured to control the main antenna apparatus 101 to receive and transmit a control signal and a service signal within a main beam coverage area; the baseband processing module 103 is further configured to control the secondary antenna apparatus 102 to transmit and receive service signals in the secondary beam coverage area.

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

As another possible implementation, the main antenna apparatus 101 and the auxiliary antenna apparatus 102 may correspond to the same antenna array, beam forming network and transceiving channel, and in this implementation scenario, the beam forming network and the transceiving channel may form and select the auxiliary beam under the control of the baseband processing module 103, and form the main beam in an analog manner.

In an implementation scenario where the main antenna apparatus 101 and the auxiliary antenna apparatus 102 may respectively include respective antenna arrays and transceiving channels, as shown in fig. 1, the main antenna apparatus 101 may be composed of a main antenna array 1011 and a main antenna transceiving channel group 1012. The main antenna transceiving channel group is connected with the baseband processing module and receives and transmits control signals in the main beam coverage range under the control of the baseband processing module. The secondary antenna apparatus 102 is composed of a secondary antenna array 1021, a secondary beam forming network 1022, and a secondary antenna transceiving path set 1023.

The main antenna array 1011 has the capability of supporting multiple frequency bands. It may be M₁Array of columns, wherein M₁The polarization direction of the array may be L, an integer of 1 or more₁A, L₁Is an integer of 1 or more. Each main antenna transmit-receive channel group 1012 of the main antenna corresponds to one polarization direction; each polarization direction of the main antenna array 1011 corresponds to a main antenna transmit-receive channel group 1012 comprising M₁And the main antenna transceiving channel.

Specifically, when the main antenna array 1011 is single polarized, i.e., L₁When 1, M₁The first antenna array is connected to M₁A main antenna transmit-receive channel; when the main antenna array 1011 is multi-polarized, i.e., L₁>At 1 time, M₁The first antenna array is connected to M₁×L₁And the main antenna transceiving channel.

The auxiliary antenna array 1021 may be single or multipleThe column structure may be single polarized or multi-polarized. Assume that the secondary antenna array 1021 is M₂Column in which M₂For integers greater than 1, the polarization direction of the array may be L₂A, L₂Is an integer of 1 or more; each auxiliary antenna transceiving channel group 1023 of the auxiliary antennas corresponds to one polarization direction and has L in total₂And (4) respectively. The auxiliary antenna transceiving channel group 1023 corresponding to each polarization direction of the array comprises N₂A transmit-receive channel, N₂Is an integer greater than 1.

L is also included in the auxiliary antenna device 102₂A plurality of secondary beam forming networks 1022, each secondary beam forming network 1022 being N₂Driving M₂A beam forming network of N each₂Driving M₂The beam forming network acts on the same polarization array in the second antenna array to form N₂A secondary beam of each N₂Driving M₂Beamforming network connection N₂Each auxiliary antenna transceiving channel; n corresponding to each polarization direction₂And the auxiliary antenna transceiving channels are used for being opened or closed under the control of the baseband processing module, so that auxiliary beams are selected.

In an implementation scenario where the main antenna apparatus 101 and the auxiliary antenna apparatus 102 correspond to the same antenna array, beam forming network, and transceiving channel, the main antenna apparatus and the auxiliary antenna apparatus may also correspond to the same M₃Array of column antennas, the M₃The column antenna array comprises L₃Direction of polarization, M₃Is an integer greater than 1, L₃Is an integer greater than or equal to 1; the antenna array can be used for receiving and transmitting control signals and service signals in the coverage range of the main beam and/or receiving and transmitting service signals in the coverage range of the auxiliary beam.

The main antenna device and the auxiliary antenna device correspond to the same L₃A plurality of beam forming networks, each beam forming network being N₃Driving M₃A beam forming network of N each₃Driving M₃Beamforming network connection N₃Individual antenna transmit-receive channel, N₃Is an integer greater than 1.

N corresponding to each polarization direction₃The antenna transceiving channel is used for being opened or closed under the control of the baseband processing module so as to select the auxiliary beam; l is₃×N₃The antenna transceiving channels are also used for correcting received and transmitted signals so that L is₃×N₃The amplitude change and the phase change of the signals received and transmitted by the antenna transceiving channels are kept consistent, and simultaneously, each antenna transceiving channel is connected with N₃Driving M₃The connection cables between the beam forming networks are consistent in length; n corresponding to each polarization direction₃The antenna transceiving channels are also used for carrying out amplitude and phase weighting on the received and transmitted signals under the control of the baseband processing module so as to enable N to be₃Driving M₃N of beam forming network formation₃The auxiliary beams are weighted to synthesize 1 main beam.

The baseband processing module 103 may control the antenna array of the main antenna apparatus to receive and transmit the control Signal and the service Signal in the main beam coverage range and control the antenna array of the auxiliary antenna apparatus to receive and transmit the service Signal in the auxiliary beam coverage range according to the pilot support capability of the antenna system, the user Signal transmission Power, and the Reference Signal Receiving Power (RSRP).

For example: and a reusable auxiliary beam set exists, wherein the elements in the set are an auxiliary beam with the maximum RSRP in the auxiliary beams and an auxiliary beam with the maximum RSRP and the absolute value of the RSRP difference value between the auxiliary beam and the auxiliary beam with the maximum RSRP is larger than a second set threshold value. Then, when the beam with the largest RSRP is the primary beam, if the absolute value of the difference between the primary beam and the secondary beam with the largest RSRP is smaller than a first set threshold value, and the number of the reusable secondary beam set elements is greater than 1, the baseband processing module 103 may switch the traffic channel covered by the primary beam with the largest RSRP to the secondary beam with the largest RSRP.

In this embodiment, under the control of the baseband processing module, the main antenna device receives and transmits a control signal and a service signal within the coverage of the main beam; the secondary antenna apparatus receives and transmits traffic signals within the secondary beam coverage area. Therefore, the control signal is transmitted and received through the main beam, the service signal is transmitted and received through the main beam and the auxiliary beam, and multiplexing can be performed between the auxiliary beams, so that the capacity of the system is improved, and basic coverage is ensured.

Fig. 2 is a schematic structural diagram of an antenna system according to a second embodiment of the present invention. As shown in fig. 2, the present embodiment is described by taking an example that the main antenna device and the auxiliary antenna device may respectively include an antenna array and a transceiver channel. Specifically, the method comprises the following steps:

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

In the main antenna apparatus 201, the main antenna array 2011 has a single-row cross polarization structure, and the main antenna array 2011 includes 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 correspondingly connected with 1 main antenna transceiving channel group 2012, so that the total number of the main antenna transceiving channel groups 2012 is 2, which respectively corresponds to the main polarization and the negative polarization, and is finally connected to the baseband beam application module 2031 in the baseband processing module 203. The main antenna beam horizontal pattern formed by the main antenna device 201 is shown in fig. 3.

In the auxiliary antenna apparatus 202, the auxiliary antenna array 2021 has a 3-column structure, the auxiliary antenna array 2021 includes 2 polarization directions, and each polarization direction is correspondingly connected to a 2-drive-3 beam forming network. The 2-by-3 beam forming network structure 2022 of the auxiliary antenna is shown in fig. 4, and includes a 90 ° bridge, a 2:1 power divider, and a 180 ° phase shifter. The 90-degree electric bridge is used for dividing signals flowing through the electric bridge into two paths, one path carries out 90-degree phase deviation, and the other path has no change in phase; 2:1, the power divider divides signals flowing through the power divider into two paths, the amplitude of the signals is changed, and the amplitude ratio of the signals is 1: 0.707; the 180 phase shifter shifts the phase of the signal flowing through the phase shifter by 180 °. 3 ports at the upper end of the 2-drive-3 beam forming network of the auxiliary antenna are respectively connected with 3 rows of co-polarized arrays, 2 ports at the lower end can be respectively connected to the auxiliary beam receiving and transmitting channel group 2023 through cables with the same length, and the cables are connected to keep the same length, so that the phase change and amplitude change of each path of signals passing through the cables can be kept consistent. Since there is one 2-by-3 beamforming network per polarization direction, 4 ports at the lower end of the network correspond to 4 auxiliary beamforming channels of the 2 sets of auxiliary beamforming channel groups 2023. The auxiliary antenna transceiving channel is also used for correcting the received and transmitted signals so as to enable the amplitude phase change of the signals received and transmitted by the 4 antenna transceiving channels to be consistent. The secondary antenna beam horizontal pattern formed by the secondary antenna arrangement 202 is shown in fig. 5.

The auxiliary beam transceiving channels are connected to the baseband beam forming module 2031, which determines which auxiliary beam transceiving channels perform the receiving and transmitting of the auxiliary beams by weighting the amplitude and phase of the received and transmitted signals. Because each group of auxiliary beam transceiving channel groups in the auxiliary antenna device has 2 auxiliary beam transceiving channels, the receiving and the sending of 2 auxiliary beams can be carried out, the weight for carrying out amplitude and phase weighting can be represented by a two-dimensional array, each element in the array can correspond to one auxiliary beam transceiving channel and can be represented by 1 or 0, the element of 1 represents that the corresponding auxiliary beam transceiving channel is opened, and the auxiliary beam receiving or sending can be carried out through the auxiliary beam transceiving channel; an element of 0 indicates that the corresponding secondary beam transmission/reception channel is closed and the secondary beam is not received or transmitted. The weight of the baseband beam forming module can be [ 10 ] or [ 01 ], which corresponds to 2 auxiliary beams respectively.

The baseband beam application module 2032 is configured to, according to at least one information of pilot support capability, user signal transmission power, and reference signal reception power RSRP, control the main antenna apparatus 201 to receive and transmit a control signal and a part of a service signal within a coverage area of a main beam, control the auxiliary antenna apparatus 202 to receive and transmit a service signal within a coverage area of an auxiliary beam, or control the main antenna apparatus 201 to receive and transmit a service signal within a coverage area of the main beam, switch a service channel from coverage of the main beam to coverage of the auxiliary beam, specifically:

for any one of the secondary beams, if the RSRP difference absolute value between its RSRP and the maximum RSRP beam of all the secondary beams is greater than a second set threshold, for example: 6dB, these secondary beams are defined as elements in the set of reusable secondary beams. Besides the auxiliary beams, the auxiliary beams with the maximum RSRP in the reusable auxiliary beam set can be multiplexed. If the number of the reusable auxiliary beam set elements is greater than 1 and the beam with the largest RSRP among all the beams is the main beam, it is determined 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 a first set threshold, which is set to 9dB here. If the RSRP is smaller than the RSRP threshold, it means that even if the traffic channel in the primary beam coverage range with the maximum RSRP is switched to the secondary beam coverage, the coverage performance of the user will not be greatly lost, and at this time, the traffic channel covered by the primary beam with the maximum RSRP is switched to the secondary beam coverage with the maximum RSRP. The method pushes more users meeting the multiplexing condition to cover under the auxiliary beam, thereby increasing the probability of auxiliary beam multiplexing. Through reasonably setting the first set threshold, the coverage performance can be ensured not to be obviously lost, and the capacity gain brought by multiplexing can be increased.

In the antenna system provided in this embodiment, the main antenna apparatus is composed of a main antenna array of a single-column cross polarization array and 2 main antenna transceiver channel groups, and is configured to receive and transmit a control signal within a main beam coverage range; the auxiliary antenna device consists of 3 columns of auxiliary antenna arrays of a cross polarization array, 2-drive-3 beam forming networks and 2 auxiliary antenna transceiving channel groups of 4 auxiliary antenna transceiving channels, and receives and transmits service signals in the auxiliary beam coverage range; the baseband processing module is composed of a baseband beam forming module and a baseband beam application module, determines which auxiliary beam receiving and transmitting channels receive and transmit auxiliary beams by weighting the amplitude and phase of signals, and switches the service channel from the main beam coverage to the auxiliary beam coverage according to the information such as reference signal received power RSRP and the like. Therefore, 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 that the capacity of the system is improved, and the basic coverage is ensured.

Fig. 6 is a schematic structural diagram of an antenna system according to a third embodiment of the present invention. As shown in fig. 6, in this embodiment, a case where the antenna array and the transmission/reception channel of the main antenna device are not changed, and the antenna array, the beam forming network, and the transmission/reception channel of the auxiliary antenna device are changed is described. Specifically, the method comprises the following steps:

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 a main antenna array 4011 and a main antenna transceiving channel group 4012; the auxiliary antenna device comprises an auxiliary antenna array 4021, an auxiliary beam forming network 4022 and an auxiliary antenna internal correction multi-channel transceiving 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 the same as those of the second embodiment, and are not described herein again. The following describes the structure of the auxiliary antenna device 402 in detail:

the auxiliary antenna array 4021 is a 4-column cross-polarized array, and two polarization directions thereof include a +45 ° polarization direction and a-45 ° polarization direction, which are defined as a main polarization direction and a negative polarization direction, respectively. Each polarization direction is correspondingly connected with a 2-drive-4 beam forming network. The structure of a 2-by-4 beam forming network 4022 for the secondary antenna is shown in fig. 7, and includes one 90 ° bridge, two 4:1 power dividers, and two 180 ° phase shifters. The 90-degree electric bridge is used for dividing signals flowing through the electric bridge into two paths, one path carries out 90-degree phase deviation, and the other path has no change in phase; 4:1, the power divider divides signals flowing through the power divider into two paths, the amplitude of the signals is changed, and the amplitude ratio of the signals is 1: 0.5; the 180 phase shifter shifts the phase of the signal flowing through the phase shifter by 180 °. The upper end 4 ports of the 2-drive-4 beam forming network 4022 of the auxiliary antenna are respectively connected with 4 columns of co-polarized arrays, the lower end 2 ports are respectively connected to the auxiliary beam transceiving channel group 4023 through cables with the same length, the lengths of the connecting cables are kept to be the same, and phase change and amplitude change of signals passing through the cables can be kept to be the same. Because there is one 2-by-4 beamforming network per polarization direction, 4 ports at the lower end of the network correspond to 4 secondary beamforming channels of the 2 sets of secondary beamforming channel groups. The auxiliary antenna transceiving channels are also used for correcting the received and transmitted signals so as to enable the amplitude phase change of the signals received and transmitted through the 4 antenna transceiving channels to be consistent. The secondary beam horizontal pattern of the secondary antenna arrangement is shown in fig. 8. The auxiliary antenna device forms two beams under a 2-drive-4-beam forming network, side lobe suppression is low, the overlapping area of the two beams is small, the isolation degree of the two beams is good, interference between the beams can be effectively controlled, and therefore system capacity can be better improved.

In this embodiment, under the condition that the structures of the main antenna device and the baseband processing module are consistent with those of the foregoing embodiment, the antenna array in the auxiliary antenna device is changed into a 4-column cross polarization array, and the beam forming network in the auxiliary antenna device is changed into a 2-drive 4 structure, so that the reception and transmission of signals are performed by using auxiliary antenna arrays with different columns, and the array mode of the auxiliary antenna arrays is extended, so that the implementation array mode of the auxiliary antenna arrays is more flexible and reliable, more services are covered under the auxiliary beams, and meanwhile, the control signals are transmitted and received through the main beam, service signals are transmitted and received through the main beam and the auxiliary beams, and the auxiliary beams can be multiplexed, thereby improving the capacity of the system and ensuring basic coverage.

Fig. 9 is a schematic structural diagram of an antenna system according to a fourth embodiment of the present invention. As shown in fig. 9, the present embodiment will be described by taking an example in which the main antenna apparatus and the auxiliary antenna apparatus share the same antenna array, beam forming network, and transmission/reception channel. Specifically, the method comprises the following steps:

the main antenna device and the auxiliary antenna device of the antenna system 66 correspond to the same 3-column cross-polarized antenna array, so the structure of the antenna system is two parts, namely, the main (auxiliary) antenna device 601 and the baseband processing module 602.

In the main (auxiliary) antenna assembly 601, the main antenna assembly and the auxiliary antenna assembly correspond to the same 3-column cross-polarized antenna array 6011, each antenna array includes a +45 ° polarization direction and a-45 ° polarization direction, which are respectively defined as a main polarization direction and a negative polarization direction.

Similarly, the antenna arrays of the main antenna device and the auxiliary antenna device correspond to the same beam forming network, and each polarization direction corresponds to 1 beam forming network respectively. Each beam forming network is a 2-by-3 beam forming network 6012, and each 2-by-3 beam forming network 6012 is connected with 2 auxiliary beam transceiving channel groups 6033 with internal correction capability through equal-length cables; therefore, 4 antenna transceiving channels are connected with 2-by-3 beam forming networks.

In the baseband processing module 602, a baseband beam forming module 6021 and a baseband beam application module 6022 are included.

The auxiliary beam transceiver channel is connected to the baseband beam forming module 6021, and has two ports, one is a main beam main negative polarization port, and the other is an auxiliary beam main negative polarization port.

The baseband beam forming module 6021 determines which beam transceiving channels receive and transmit the primary beam and the secondary beam by amplitude and phase weighting. Since there are 2 sets of beam transceiving channel groups 6033 in the main (auxiliary) antenna apparatus, it is possible to perform reception and transmission of 2 auxiliary beams, and when two sets of beam transceiving channel groups 6033 are simultaneously opened, since the lengths of connection cables for connecting the beam transceiving channels and the beam forming network 6012 are identical, and the beam transceiving channels are also used to correct signals to be received and transmitted, so that amplitude and phase changes of signals received and transmitted through the 4 antenna transceiving channels are identical, it is possible to synthesize two beams and simulate a main beam. So that control signals and traffic signals may be received and transmitted within the primary beam coverage area and/or traffic signals may be received and transmitted within the secondary beam coverage area when a single group of beam transmit receive channel groups 6033 is turned on. The horizontal pattern of the main beam is simulated as shown in fig. 10. The main beam is formed in an analog mode, the control channel of the main beam is not distorted, and the radiation pattern in the main radiation direction is not obviously concave.

When the baseband beamforming module 6021 performs amplitude and phase weighting on the transmitted and received signals, the weighted values of the amplitude and the phase may be specifically represented by a two-dimensional array, and each element in the array may correspond to one auxiliary beam transceiving channel and may be represented by 1 or 0. When the element is 1, the corresponding auxiliary beam transceiving channel is opened, and the auxiliary beam can be received and transmitted through the auxiliary beam transceiving channel; when the element is 0, it indicates that the corresponding auxiliary beam transceiving channel is closed, and the reception and transmission of the auxiliary beam are not performed. The weight values of the baseband beam forming module 6021 for weighting may be [ 10 ], [ 01 ], which respectively correspond to 2 auxiliary beams, and when the weight value is [ 11 ], the 2 auxiliary beams are synthesized, so as to simulate the receiving and transmitting of signals within the range of the main beam.

The baseband beam application module 6022 is configured to, according to at least one information of pilot support capability, user signal transmission power, and reference signal reception power RSRP, control the main (auxiliary) antenna apparatus 601 to receive and transmit a control signal and a part of a service signal in a main beam coverage area, control the main (auxiliary) antenna apparatus 601 to receive and transmit a service signal in an auxiliary beam coverage area, or control the main (auxiliary) antenna apparatus 601 to receive and transmit a service signal in the main beam coverage area, and may switch a service channel from the main beam coverage area to the auxiliary beam coverage area, where the method specifically includes:

and for any one auxiliary beam, if the absolute value of the difference value of the RSRP of the auxiliary beam with the maximum RSRP is larger than a second set threshold, for example, 6dB, defining the auxiliary beams as elements in the reusable auxiliary beam set. The reusable auxiliary beam set also comprises an auxiliary beam with the maximum RSRP besides the auxiliary beam. If the number of the reusable auxiliary beam set elements is greater than 1 and the beam with the largest RSRP among all the beams is the main beam, it is determined 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 a first set threshold, which is set to 9dB here. If the RSRP is smaller than the RSRP threshold, it means that the coverage performance of the user will not be greatly lost even if the traffic channel covered by the maximum RSRP beam is switched to the secondary beam for coverage. And when the two conditions are simultaneously met, switching the service channel from the primary beam coverage with the maximum RSRP to the secondary beam coverage with the maximum RSRP. The method pushes more users meeting the multiplexing condition to cover under the auxiliary beam, thereby increasing the probability of beam multiplexing. The first threshold value can be freely set, and different thresholds are reasonably set, so that the coverage performance can be ensured not to be obviously lost, 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-drive-3-beam forming network. The length of the cable between each antenna transceiving channel and the 2-drive 3-beam forming network is consistent, and the antenna transceiving channels are also used for correcting received and transmitted signals so that amplitude phase changes of the signals received and transmitted by the 4 antenna transceiving channels are consistent. The antenna transceiving channel weights the amplitude and phase of the received and transmitted signals under the control of the baseband processing module, so that 2 auxiliary beams formed by the 2-drive-3-beam forming network are weighted and synthesized into 1 main beam. Therefore, the functions of the main antenna device and the auxiliary antenna device are simultaneously realized on the same antenna array and beam forming network, 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 that the capacity of the system is improved, and the basic coverage of the system is ensured. Thus, the function of the main antenna device in the previous embodiment is changed to be undertaken by the auxiliary antenna device, the main antenna device can be not used or directly removed, if the main antenna device is not used, the main antenna system can be independently used in other frequency bands, and if the main antenna device is removed, the size of the sky surface of the antenna system can be reduced.

Fig. 11 is a schematic structural diagram of an antenna system according to a fifth embodiment of the present invention. As shown in fig. 11, similar to the fourth embodiment, the main antenna device and the auxiliary antenna device in this embodiment share the same antenna array, beam forming network and transceiving channel, which is not described herein again. The difference between this embodiment and the fourth embodiment is that the antenna array, the beam forming network, and the transceiver channels of the main (auxiliary) antenna apparatus in this embodiment are changed. The method comprises the following specific steps:

the main (auxiliary) antenna array 7021 corresponds to the same 4-column cross polarization array, each polarization direction of the array is correspondingly connected with one 2-by-4 beam forming network 7022, and the structure and function of the 2-by-4 beam forming network 7022 are the same as those of the 2-by-4 beam forming network in the third embodiment. The main (auxiliary) antenna apparatus may simulate the main beam with the auxiliary beam, and the horizontal pattern of the simulated main beam is shown in fig. 12. The main beam is formed in an analog mode, the control channel of the main beam is not distorted, and the radiation pattern in the main radiation direction is not obviously concave.

In this embodiment, the main antenna device and the auxiliary antenna device share the same 4-column antenna array and the same 2-drive-4-beam forming networks. The length of the cable between each antenna transceiving channel and the 2-drive 4-beam forming network is consistent, and the antenna transceiving channels are also used for correcting received and transmitted signals so that the amplitude phase change of the signals received and transmitted by the 4 antenna transceiving channels is consistent. The antenna transceiving channel weights the amplitude and phase of the received and transmitted signals under the control of the baseband processing module, so that 2 auxiliary beams formed by the 2-drive 4-beam forming network are weighted and synthesized into 1 main beam. Therefore, the functions of the main antenna device and the auxiliary antenna device are simultaneously realized on the same antenna array and beam forming network, 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 that the system capacity is improved and the basic coverage is ensured.

Fig. 13 is a schematic structural diagram of an antenna according to a sixth embodiment of the present invention. As shown in fig. 13, the antenna 88 includes a main antenna device 801 and an auxiliary antenna device 802;

a main antenna device 801, configured to form a main beam and receive and transmit a control signal and a service signal within the main beam range under the control of a baseband processing module of the base station;

and a secondary antenna device 802 for forming a secondary beam and for receiving and transmitting a service signal within the coverage of the secondary beam under the control of the baseband processing module.

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 possible implementation manner, on the basis of the above-mentioned embodiment shown in fig. 13, the main antenna device includes M₁Row first antenna array, the M₁Is an integer greater than or equal to 1; the first antenna array includes L₁A direction of polarization, the L₁Is an integer greater than or equal to 1; the M₁The first antenna array is connected to M₁×L₁The main antenna transceiving channel; the first antenna array is connected with the baseband processing module and used for receiving and sending control signals and service signals within the coverage range of the main beam under the control of the baseband processing module.

Specifically, the main antenna apparatus 801 and the auxiliary antenna apparatus 802 may respectively include an antenna array and a transceiving channel, and the auxiliary antenna apparatus further includes a beam forming network. When the antenna is an active antenna, the transceiving channel, the antenna array and the beam network are integrated and arranged in the antenna housing; when the antenna is a passive antenna, the antenna array and the beam network are integrally arranged in the antenna housing, and the transceiving channel is separately arranged in the radio frequency module. In addition, the transceiving channel of the main antenna apparatus 801 may select a main beam under the control of the baseband processing module of the base station, and the beam forming network and the transceiving channel of the secondary antenna apparatus 802 may form and select a secondary beam under the control of the baseband processing module of the base station.

Optionally, the main antenna device may include 1 column of the first antenna array, and the first antenna array includes 2 polarization directions; the main antenna device also comprises 2 main antenna transceiving channels.

Alternatively, the secondary antenna arrangement may comprise M₂Row second antenna array, the M₂Is an integer greater than 1; the second antenna array comprises L₂A direction of polarization, the L₂Is an integer greater than or equal to 1; the auxiliary antenna device also comprisesL₂A plurality of secondary beam forming networks, each secondary beam forming network being N₂Driving M₂A beam forming network of N each₂Driving M₂The beam forming network acts on the same polarization array in the second antenna array to form N₂A secondary beam of each N₂Drive M beamforming network connection N₂A secondary antenna transmit-receive channel, N₂Is an integer greater than 1; the second antenna array is connected to the baseband processing module, and is configured to receive and transmit a service signal within the coverage of the auxiliary beam under the control of the baseband processing module.

Optionally, the auxiliary antenna apparatus may further include 3 columns of the second antenna array, where the second antenna array includes 2 polarization directions, the auxiliary antenna apparatus further includes 2-by-3 beam forming networks, and each 2-by-3 beam forming network is connected to 2 auxiliary antenna transceiving channels; or, the auxiliary antenna apparatus includes 4 columns of second antenna arrays, the second antenna arrays include 2 polarization directions, the auxiliary antenna apparatus further includes 2-by-4 beam forming networks, and each 2-by-4 beam forming network is connected to 2 auxiliary antenna transceiving channels.

As another possible implementation manner, on the basis of the above-mentioned embodiment shown in fig. 13, the main antenna apparatus 801 and the auxiliary antenna apparatus 802 may correspond to the same antenna array, beam forming network and transceiving channel, and in this implementation scenario, the main antenna apparatus and the auxiliary antenna apparatus correspond to the same M₃Column third antenna array comprising L₃A direction of polarization, M₃Is an integer greater than 1, L₃Is an integer greater than or equal to 1; the main antenna device and the auxiliary antenna device correspond to the same L₃A plurality of beam forming networks, each beam forming network being N₃Driving M₃A beam forming network of N each₃Driving M₃The beam forming network acts on the same polarization array in the third antenna array to form N₃A secondary beam of each N₃Driving M₃Beamforming network connection N₃Individual antenna transmit-receive channel, N₃Is an integer greater than 1; for each polarization direction, N₃The antenna transceiving channels are used for being opened or closed under the control of the baseband processing module, so that the auxiliary wave beams are selected; for each polarization direction, N₃The antenna transceiving channels are also used for carrying out amplitude and phase weighting on the received and transmitted signals under the control of the baseband processing module so as to enable N to be₃Weighting and synthesizing 1 main beam by the auxiliary beams; the third antenna array is configured to receive and transmit the control signal and the traffic signal in the coverage of the primary beam, and/or receive and transmit the traffic signal in the coverage of the secondary beam.

In an implementation scenario where the main antenna apparatus 801 and the auxiliary antenna apparatus 802 may respectively include respective antenna arrays and transceiving channels, the main antenna apparatus 801 may be composed of a main antenna array 8011 and a main antenna transceiving channel group 8012. The main antenna transceiving channel group is connected with a baseband processing module of the base station and receives and transmits control signals in the main beam coverage area 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 beam forming network 8022, and an auxiliary antenna transceiving channel group 8023.

The main antenna array 8011 has the capability of supporting multiple frequency bands. It may be M₁Array of columns, wherein M₁The polarization direction of the array may be L, an integer of 1 or more₁A, L₁Is an integer of 1 or more. Each main antenna transmit-receive channel group 8012 of the main antenna corresponds to one polarization direction; each main antenna transceiving channel group 8012 corresponding to each polarization direction of main antenna array 8011 comprises M₁And the main antenna transceiving channel.

In particular, when main antenna array 8011 is single-polarized, i.e., L₁When 1, M₁The first antenna array is connected to M₁A main antenna transmit-receive channel; when main antenna array 8011 is multi-polarized, i.e., L₁>At 1 time, M₁The first antenna array is connected to M₁×L₁And the main antenna transceiving channel.

The auxiliary antenna array 8021 may be a single-row or multi-row structure, or may be a monopoleChemical or multi-polarization. Assume that the secondary antenna array 1021 is M₂Column in which M₂For integers greater than 1, the polarization direction of the array may be L₂A, L₂Is an integer of 1 or more; each auxiliary antenna transceiving channel group 8023 of the auxiliary antenna corresponds to a polarization direction and has L in total₂And (4) respectively. The auxiliary antenna transceiving channel group 8023 corresponding to each polarization direction of the array comprises N₂A transmit-receive channel, N₂Is an integer greater than 1.

L is also included in the secondary antenna arrangement 802₂A plurality of secondary beam forming networks 8022, each secondary beam forming network 8022 being N₂Driving M₂A beam forming network of N each₂Driving M₂The beam forming network acts on the same polarization array in the second antenna array to form N₂A secondary beam of each N₂Driving M₂Beamforming network connection N₂Each auxiliary antenna transceiving channel; n corresponding to each polarization direction₂The auxiliary antenna transceiving channels are used for being opened or closed under the control of a baseband processing module of the base station, so that auxiliary beams are selected.

In the implementation scenario where the main antenna apparatus 801 and the auxiliary antenna apparatus 802 correspond to the same antenna array, beam forming network, and transceiving channel, the main antenna apparatus and the auxiliary antenna apparatus may also correspond to the same M₃Array of column antennas, the M₃The column antenna array comprises L₃Direction of polarization, M₃Is an integer greater than 1, L₃Is an integer greater than or equal to 1; the antenna array can be used for receiving and transmitting control signals and service signals in the coverage range of the main beam and/or receiving and transmitting service signals in the coverage range of the auxiliary beam.

The main antenna device 801 and the auxiliary antenna device 802 correspond to the same L₃A plurality of beam forming networks, each beam forming network being N₃Driving M₃A beam forming network of N each₃Driving M₃Beamforming network connection N₃Individual antenna transmit-receive channel, N₃Is an integer greater than 1.

OptionallyN for each polarization direction₃The antenna transceiving channel is used for being opened or closed under the control of a baseband processing module of the base station so as to select the auxiliary beam; l is₃×N₃The antenna transceiving channels are also used for correcting received and transmitted signals so that L is₃×N₃The amplitude change and the phase change of the signals received and transmitted by the antenna transceiving channels are kept consistent.

Optionally, for each polarization direction, the N₃An antenna transmit-receive channel and the N₃Driving M₃The connection cables between the beam forming networks are of uniform length.

Specifically, each antenna transceiving channel is connected with N₃Driving M₃The connection cables between the beam forming networks are consistent in length; for each polarization direction, N₃The antenna transceiving channels are also used for carrying out amplitude and phase weighting on received and transmitted signals under the control of a baseband processing module of the base station so as to enable N to be₃Driving M₃N of beam forming network formation₃The auxiliary beams are weighted to synthesize 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 transmits a control signal and a service signal within the coverage of the main beam; the secondary antenna apparatus receives and transmits traffic signals within the secondary beam coverage area. Therefore, the control signal is transmitted and received through the main beam, the service signal is transmitted and received through the main beam and the auxiliary beam, and multiplexing can be performed between the auxiliary beams, so that the capacity of the system is improved, and basic coverage is ensured.

Fig. 14 is a schematic structural diagram of a base station according to a seventh embodiment of the present invention. As shown in fig. 14, the base station 99 includes a baseband processing module 901, configured to control a main antenna apparatus in the antenna to receive and transmit a control signal and a service signal within a main beam range; and controlling the auxiliary antenna device in the antenna to receive and transmit the service signal in the auxiliary beam coverage range.

Optionally, the baseband processing module is specifically configured to: when the beam with the maximum reference signal received power RSRP is the primary beam, if the absolute value of the RSRP difference between the primary beam and the secondary beam with the maximum RSRP is smaller than a first set threshold value and the number of reusable secondary beam set elements is greater than 1, the traffic channel covered by the primary beam with the maximum RSRP is switched to the secondary beam with the maximum RSRP.

Optionally, the element in the reusable secondary beam set is the secondary beam with the maximum RSRP and the secondary beam with the maximum RSRP whose absolute value of the RSRP difference value is greater than a second set threshold.

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

The baseband beam forming module 9011 determines which auxiliary beam transceiving channels perform the receiving and transmitting of the auxiliary beam by weighting the amplitude and the phase of the signal received and transmitted by the antenna.

A baseband beam application module 9012, configured to receive and send a control signal and a service signal within a main beam range by a main antenna device of a control antenna; and controlling the auxiliary antenna device in the antenna to receive and transmit the service signal in the auxiliary beam coverage range.

Specifically, the baseband processing module 901 may be configured to, when a beam with the largest reference signal received power RSRP is a primary beam, switch a service channel covered by the primary beam with the largest RSRP to be covered by a secondary beam with the largest RSRP if an absolute value of an RSRP difference between the primary beam and the secondary beam with the largest RSRP is smaller than a first set threshold and the number of reusable secondary beam set elements is greater than 1. The secondary beam with the maximum RSRP and the secondary beam with the maximum RSRP with the absolute value of the RSRP difference value larger than a second set threshold value can be multiplexed by the secondary beam set.

In general, the baseband processing module 901 is disposed inside a baseband processing Unit (Base band Unit, BBU for short) of the Base station. Specifically, when the baseband beam forming module 9011 in the baseband processing module 901 performs amplitude and phase weighting on signals sent and received by an antenna, the weighted values of the amplitude and the phase may be specifically represented by a multidimensional array, and each element in the array may correspond to one auxiliary beam transceiving channel of the antenna, and may be represented by 1 or 0. When the element is 1, the corresponding auxiliary beam transceiving channel in the antenna is opened, and the auxiliary beam can be received and transmitted through the auxiliary beam transceiving channel; when the element is 0, it indicates that the corresponding auxiliary beam transceiving channel is closed, and the reception and transmission of the auxiliary beam are not performed. The weight values of the baseband beam forming module 6021 for weighting may be [ 10 ], [ 01 ], which respectively correspond to 2 auxiliary beams, and when the weight value is [ 11 ], the 2 auxiliary beams are synthesized, so as to simulate the receiving and transmitting of signals within the range of the main beam.

Specifically, the baseband beam application module 9012 in the baseband processing module 901 may control the antenna array of the main antenna device in the antenna to receive and transmit the control Signal and the service Signal in the main beam coverage area, and control the antenna array of the auxiliary antenna device in the antenna to receive and transmit the service Signal in the auxiliary beam coverage area according to the factors such as the pilot support capability of the antenna, the user Signal transmission Power, and the Reference Signal Receiving Power (RSRP).

For example: and a reusable auxiliary beam set exists, wherein the elements in the set are an auxiliary beam with the maximum RSRP in the auxiliary beams and an auxiliary beam with the maximum RSRP and the absolute value of the RSRP difference value between the auxiliary beam and the auxiliary beam with the maximum RSRP is larger than a second set threshold value. Then, when the beam with the largest RSRP is the primary beam, if the absolute value of the difference between the primary beam and the secondary beam with the largest RSRP is smaller than a first set threshold value, and the number of reusable secondary beam set elements is greater than 1, the baseband beam application module 9012 in the baseband processing module 901 may switch the traffic channel covered by the primary beam with the largest RSRP to the secondary beam with 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 the control signal and the service signal in the main beam coverage range, and controls the antenna array of the auxiliary antenna device in the antenna to receive and transmit the service signal in the auxiliary beam coverage range according to the factors such as the pilot support capability of the antenna, the user signal transmission power, and the reference signal reception power. Therefore, the capacity of the base station is improved while the basic coverage of the base station is ensured.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An antenna system, comprising: the antenna device comprises a main antenna device, an auxiliary antenna device and a baseband processing module;

the main antenna device is connected with the baseband processing module, and is used for forming a main beam and receiving and sending a control signal and a service signal within the coverage range of the main beam under the control of the baseband processing module;

the auxiliary antenna device is connected with the baseband processing module, and is used for forming an auxiliary beam and receiving and transmitting the service signal within the coverage range of the auxiliary beam under the control of the baseband processing module;

the baseband processing module is configured to control the main antenna apparatus to receive and transmit a control signal and the service signal within the coverage of the main beam, and control the auxiliary antenna apparatus to receive and transmit the service signal within the coverage of the auxiliary beam.

2. Antenna system according to claim 1, characterized in that M is included in the main antenna device₁Column first antenna array, said M₁Is an integer greater than or equal to 1; the first antenna array comprises L₁A direction of polarization, said L₁Is an integer greater than or equal to 1; the M is₁The first antenna array is connected to M₁×L₁The main antenna transceiving channel;

the first antenna array is connected with the baseband processing module and used for receiving and sending control signals and service signals within the coverage range of the main beam under the control of the baseband processing module.

3. The antenna system according to claim 2, characterized in that 1 column of said first antenna array is comprised in said main antenna device, said first antenna array comprising 2 polarization directions; the main antenna device also comprises 2 main antenna transceiving channels.

4. Antenna system according to any of claims 1-3, characterized in that the secondary antenna means comprise M₂Column second antenna array, said M₂Is an integer greater than 1; the second antenna array comprises L₂A direction of polarization, said L₂Is an integer greater than or equal to 1; the auxiliary antenna device also comprises L₂Each of the secondary beam forming networks is N₂Driving M₂A beam forming network, each of said N₂Driving M₂The beam-forming network acting in the second antenna arrayFormation of N by co-polarized array₂A plurality of auxiliary beams, each of said N₂Driving M₂Beamforming network connection N₂The auxiliary antenna transceiving channel, N₂Is an integer greater than 1;

the second antenna array is connected to the baseband processing module, and is configured to receive and send a service signal within the coverage of the auxiliary beam under the control of the baseband processing module.

5. The antenna system of claim 4, wherein the secondary antenna device comprises 3 columns of the second antenna array, the second antenna array comprises 2 polarization directions, and the secondary antenna device further comprises 2-by-3 beam forming networks, each 2-by-3 beam forming network connects 2 of the secondary antenna transceiving channels; or,

the auxiliary antenna device comprises 4 columns of the second antenna arrays, each second antenna array comprises 2 polarization directions, each auxiliary antenna device further comprises 2-by-4 beam forming networks, and each 2-by-4 beam forming network is connected with 2 auxiliary antenna transceiving channels.

6. The antenna system of claim 1, wherein the main antenna assembly and the auxiliary antenna assembly correspond to the same M₃Column third antenna array comprising L₃A direction of polarization, said M₃Is an integer greater than 1, said L₃Is an integer greater than or equal to 1; the main antenna device and the auxiliary antenna device correspond to the same L₃A plurality of said beam forming networks, each of said beam forming networks being N₃Driving M₃A beam forming network, each of said N₃Driving M₃The beam forming network acts on the same polarization array in the third antenna array to form N₃A plurality of auxiliary beams, each of said N₃Driving M₃Beamforming network connection N₃Each of the antenna transceiving channels, N₃Is an integer greater than 1;

for each polarization direction, theN₃The antenna transceiving channels are used for being opened or closed under the control of the baseband processing module, so that auxiliary beams are selected;

for each polarization direction, the N₃The antenna transceiving channels are also used for carrying out amplitude and phase weighting on signals received and transmitted under the control of the baseband processing module so as to enable N to be₃The auxiliary beams are weighted to synthesize 1 main beam;

the third antenna array is configured to receive and transmit the control signal and the service signal within the coverage of the primary beam, and/or receive and transmit the service signal within the coverage of the secondary beam.

7. The antenna system of claim 6, wherein L is₃×N₃Each of the antenna transceiving channels is further configured to: correcting the received and transmitted signals such that L is equal to L₃×N₃The amplitude phase change of the signals received and transmitted by the antenna transceiving channels is consistent.

8. Antenna system according to claim 6 or 7, characterized in that said N is for each polarization direction₃A single antenna transmit-receive channel and the N₃Driving M₃The connection cables between the beam forming networks are of uniform length.

9. The antenna system of any of claims 1-3, 5-7, wherein the baseband processing module is specifically configured to: when a beam with the maximum Reference Signal Received Power (RSRP) is a main beam, if the absolute value of the RSRP difference between the main beam and the auxiliary beam with the maximum RSRP is smaller than a first set threshold value and the number of reusable auxiliary beam set elements is greater than 1, switching the service channel covered by the main beam with the maximum RSRP to the auxiliary beam with the maximum RSRP.

10. The antenna system of claim 9, wherein the element in the reusable secondary beam set is the secondary beam with the maximum RSRP and the secondary beam with the maximum RSRP with an absolute value of RSRP difference greater than a second set threshold.

11. An antenna comprising a main antenna means and an auxiliary antenna means;

the main antenna device is used for forming a main beam and receiving and sending a control signal and a service signal within the range of the main beam under the control of a baseband processing module of a base station;

the auxiliary antenna device is configured to form an auxiliary beam and to receive and transmit the service signal within the coverage of the auxiliary beam under the control of the baseband processing module.

12. An antenna according to claim 11, characterized in that M is included in the main antenna device₁Column first antenna array, said M₁Is an integer greater than or equal to 1; the first antenna array comprises L₁A direction of polarization, said L₁Is an integer greater than or equal to 1; the M is₁The first antenna array is connected to M₁×L₁The main antenna transceiving channel;

13. An antenna according to claim 12, characterized in that 1 column of said first antenna array is comprised in said main antenna device, said first antenna array comprising 2 polarization directions; the main antenna device also comprises 2 main antenna transceiving channels.

14. According to any one of claims 11-13The antenna, wherein the auxiliary antenna device comprises M₂Column second antenna array, said M₂Is an integer greater than 1; the second antenna array comprises L₂A direction of polarization, said L₂Is an integer greater than or equal to 1; the auxiliary antenna device also comprises L₂Each of the secondary beam forming networks is N₂Driving M₂A beam forming network, each of said N₂Driving M₂The beam forming network acts on the same polarization array in the second antenna array to form N₂A plurality of auxiliary beams, each of said N₂Driving M₂Beamforming network connection N₂The auxiliary antenna transceiving channel, N₂Is an integer greater than 1;

15. The antenna of claim 14, wherein the secondary antenna device comprises 3 columns of the second antenna array, the second antenna array comprises 2 polarization directions, and the secondary antenna device further comprises 2-by-3 beam forming networks, each 2-by-3 beam forming network connects 2 of the secondary antenna transceiving channels; or,

16. The antenna of claim 11, wherein the main antenna means and the auxiliary antenna means correspond to the same M₃Column third antenna array comprising L₃A direction of polarization, said M₃Is an integer greater than 1, said L₃Is an integer greater than or equal to 1; the main antenna device and the auxiliary antennaDevices correspond to the same L₃A plurality of said beam forming networks, each of said beam forming networks being N₃Driving M₃A beam forming network, each of said N₃Driving M₃The beam forming network acts on the same polarization array in the third antenna array to form N₃A plurality of auxiliary beams, each of said N₃Driving M₃Beamforming network connection N₃Each of the antenna transceiving channels, N₃Is an integer greater than 1;

for each polarization direction, the N₃The antenna transceiving channels are used for being opened or closed under the control of the baseband processing module, so that auxiliary beams are selected;

17. The antenna of claim 16, wherein L is₃×N₃Each of the antenna transceiving channels is further configured to: correcting the received and transmitted signals such that L is equal to L₃×N₃The amplitude phase change of the signals received and transmitted by the antenna transceiving channels is consistent.

18. An antenna according to claim 16 or 17, wherein said N is for each polarization direction₃A single antenna transmit-receive channel and the N₃Driving M₃The connection cables between the beam forming networks are of uniform length.

19. A base station, comprising: a baseband processing module;

the baseband processing module is used for controlling a main antenna device in the antenna to receive and send control signals and service signals in a main beam range; and controlling an auxiliary antenna device in the antenna to receive and transmit the service signal within the coverage range of the auxiliary beam.

20. The base station of claim 19, wherein the baseband processing module is specifically configured to: when a beam with the maximum Reference Signal Received Power (RSRP) is a main beam, if the absolute value of the RSRP difference between the main beam and the auxiliary beam with the maximum RSRP is smaller than a first set threshold value and the number of reusable auxiliary beam set elements is greater than 1, switching the service channel covered by the main beam with the maximum RSRP to the auxiliary beam with the maximum RSRP.

21. The base station of claim 20, wherein the elements in the reusable secondary beam set are the secondary beam with the highest RSRP and the secondary beam with the highest RSRP with an absolute value of RSRP difference greater than a second set threshold.