Power sharing combined RRU and base station

Abstract

The invention provides a combined RRU with power sharing and a base station. The combined RRU comprises a first preset number of RRUs and a second preset number of power sharing modules, each RRU comprises a second preset number of groups of communication components, each communication component comprises a transmitting channel, a transmitting-receiving combiner, a receiving channel and a radio frequency channel, in the same group of communication components, the transmitting channel is connected with the transmitting-receiving combiner through a power sharing module, the transmitting-receiving combiner is directly connected with the receiving channel, and the receiving channel is directly connected with the radio frequency channel; and each power sharing module is respectively connected with the first preset number of transmitting channels and the first preset number of receiving and transmitting combiners. Therefore, the received signal does not need to pass through a power sharing unit, insertion loss cannot be brought to an uplink, a baseband link does not need to carry out a power distribution power function, and baseband processing resources are saved to a great extent.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of communication technology, and in particular to a power-sharing combined RRU and base station. Background Art

[0002] 2-sector networking is generally used in high-speed rail, tunnel, road and border line scenarios. Generally, each base station is divided into two sectors, and the coverage angle of each sector is determined according to demand. Therefore, a base station often requires 2 radio frequency units (RRUs) and 2 base station antennas to achieve coverage. Users in these areas show regular dynamics or relatively low capacity. The utilization rate of RRU is relatively low. The shortcomings of the existing technical solutions are analyzed as follows: The original solution is characterized by a relatively low power utilization rate of RRU, and there will be a situation where one side of the device is busy and the other side of the device is relatively idle, and it is impossible to achieve mutual assistance between devices at the same physical point. There are devices in the industry that realize power sharing through external devices, but there is a certain deterioration in the uplink reception performance. Summary of the invention

[0003] The embodiment of the present invention provides a power-sharing combined RRU and base station to solve the technical problem in the related art that the device for realizing power sharing through an external device deteriorates the uplink receiving performance to a certain extent.

[0004] In a first aspect, an embodiment of the present invention provides a power-sharing merged RRU, the merged RRU comprising: a first preset number of RRUs and a second preset number of power sharing modules;

[0005] Each of the RRUs comprises: a second preset number of groups of communication components, each group of the communication components comprises: a transmitting channel, a transceiver combiner, a receiving channel and a radio frequency channel, wherein in the same group of the communication components, the transmitting channel is connected to the transceiver combiner through a power sharing module, the transceiver combiner is directly connected to the receiving channel, and the transceiver combiner is connected to the radio frequency channel;

[0006] Each of the power sharing modules is respectively connected to a first preset number of transmission channels and a first preset number of transceiver combinations, the first preset number of transmission channels respectively belong to the first preset number of RRUs, and the first preset number of transceiver combinations respectively belong to the first preset number of RRUs.

[0007] Optionally, a power amplifier is provided on each of the transmitting channels and each of the receiving channels.

[0008] Optionally, the combined RRU further includes: a second preset number of calibration links,

[0009] Each of the calibration links is respectively arranged between the power sharing module and the first preset number of transmission channels connected to the power sharing module, and is used to calibrate the power sharing module;

[0010] Each of the calibration links includes: a coupler arranged on the first preset number of transmission channels.

[0011] Optionally, the combined RRU further includes: a calibration port, a calibration channel and a combiner.

[0012] The calibration port is used to calibrate the antenna connected to the combined RRU when the combined RRU is in use;

[0013] The second preset number of calibration links are connected to the calibration channel after being combined by the combiner;

[0014] A switch is provided between the calibration channel and the calibration port; when the switch is turned on, the calibration link and the calibration port share the calibration channel in a time-division manner; when the switch is turned off, the calibration link is connected to the calibration channel alone.

[0015] Optionally, when the first preset number is 2 and the second preset number is 4, the merged RRU is an 8-RF channel merged RRU; the first preset number of RRUs are respectively a first 4-RF channel RRU and a second 4-RF channel RRU.

[0016] Optionally, when the 8-RF channel combined RRU is in use, it is connected to the antenna. When the antenna is the first antenna and the second antenna, the 4 RF channels of the first 4-RF channel RRU are respectively connected to the four ports of the first antenna in sequence, and the 4 RF channels of the second 4-RF channel RRU are respectively connected to the four ports of the second antenna in sequence; or,

[0017] The four RF channels of the first 4-RF channel RRU are connected to the four ports of the second antenna in sequence respectively, and the four RF channels of the second 4-RF channel RRU are connected to the four ports of the first antenna in sequence respectively.

[0018] Optionally, the calibration port includes: a first calibration port and a second calibration port;

[0019] The calibration port of the first antenna is connected to the first calibration port, and the calibration port of the second antenna is connected to the second calibration port;

[0020] Alternatively, the calibration port of the first antenna is connected to the second calibration port, and the calibration port of the second antenna is connected to the first calibration port.

[0021] In a second aspect, an embodiment of the present invention provides a base station, the base station comprising: at least two power-sharing combined RRUs as described in the first aspect, a third antenna, and a fourth antenna;

[0022] The at least two merged RRUs include: a first 8-RF channel merged RRU and a second 8-RF channel merged RRU; the first 8-RF channel merged RRU includes a first 4-RF channel RRU and a second 4-RF channel RRU; the second 8-RF channel merged RRU includes a third 4-RF channel RRU and a fourth 4-RF channel RRU.

[0023] Optionally, the four radio frequency channels of the first four-radio channel RRU are respectively connected to the four ports of the third antenna in sequence, and the four radio frequency channels of the second four-radio channel RRU are respectively connected to the four ports of the fourth antenna in sequence;

[0024] The four RF channels of the third 4-RF-channel RRU are connected to the other four ports of the third antenna in sequence, respectively, and the four RF channels of the fourth 4-RF-channel RRU are connected to the other four ports of the fourth antenna in sequence, respectively.

[0025] Optionally, the first 8-RF channel combined RRU includes two calibration ports, and the second 8-RF channel combined RRU includes two calibration ports;

[0026] The calibration port of the third antenna is connected to any calibration port of the first 8-RF channel combined RRU, and the calibration port of the fourth antenna is connected to any calibration port of the second 8-RF channel combined RRU, or;

[0027] The calibration port of the third antenna and the calibration port of the fourth antenna are respectively connected to two calibration ports of the first 8-RF channel combined RRU, or;

[0028] The calibration port of the third antenna and the calibration port of the fourth antenna are respectively connected to the two calibration ports of the second 8-RF channel combined RRU.

[0029] Therefore, in the same group of communication components of the merged RRU, the transmitting channel is connected to the transceiver combiner through a power sharing module, and the transceiver combiner is directly connected to the receiving channel. The received signal does not need to pass through the power sharing unit, so it will not cause insertion loss to the uplink, and there is no need for the baseband link to perform power allocation function, which saves baseband processing resources to a great extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0031] Figure 1 A schematic diagram of the structure of the combined RRU provided in an embodiment of the present invention;

[0032] Figure 2 A schematic diagram of the structure of a traditional RRU provided in an embodiment of the present invention;

[0033] Figure 3 A schematic diagram of the connection relationship between an 8-RF channel combined RRU and an antenna provided in an embodiment of the present invention;

[0034] Figure 4 A schematic diagram of the connection relationship between two 8-RF channel combined RRUs and antennas provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Figure 1 FIG. 2 shows a schematic diagram of a structure of a power-sharing combined RRU according to an embodiment of the present invention. Figure 1 As shown, the merged RRU includes: a first preset number of RRUs (the RRUs are traditional RRUs, Figure 2 shows a simplified structural diagram of a conventional RRU) and a second preset number of power sharing modules 2 ( Figure 1 In the combined RRU shown, there are 2 RRUs and 4 power sharing modules 2); each RRU includes: a second preset number of group communication components, each power sharing module 2 is respectively connected to a first preset number of transmission channels 7 and a first preset number of transceiver combiners 1, the first preset number of transmission channels 7 respectively belong to a first preset number of RRUs, and the first preset number of transceiver combiners 1 respectively belong to a first preset number of RRUs. In a possible implementation, a power amplifier 5 is provided on each transmission channel 7 and each receiving channel 6. It should be noted that Figure 1 In the figure, the reference numerals of the subsequent three units are consistent with the reference numerals of the first unit on the left.

[0037] Combine two RRUs into one (such as Figure 1 As shown in the figure), and each RRU is a 4-RF channel RRU as an example, the design scheme of the power-sharing merged RRU is introduced. Since the power-sharing merged RRU is a fusion design of two 4-RF channel RRUs, the number of RF channels 4 corresponding to the power-sharing merged RRU is 8, which can be equivalent to two 4-RF channel RRUs, and power can be shared between these two 4-RF channel RRUs.

[0038] Assumptions Figure 1 In the figure, from left to right, the 1st, 3rd, 5th, 7th RF channels 4 are the 4 RF channels of RRU1, and the remaining 2, 4, 6, 8 correspond to the 4 RF channels of RRU2. The design scheme is introduced from two aspects, namely: the design scheme of the transceiver link and the design scheme of the calibration unit.

[0039] The design scheme of the transceiver link is as follows: each RRU includes: 4 groups of communication components (the second preset number is 4), each group of communication components includes: a transmitting channel 7, a transceiver combiner 1, a receiving channel 6 and a radio frequency channel 4, wherein, in the same group of communication components, the transmitting channel 7 is connected to the transceiver combiner 1 through a power sharing module 2, and the transceiver combiner 1 is directly connected to the receiving channel 6 without passing through the power sharing module 2, thereby, the received signal does not pass through the power sharing module 2, and will not cause insertion loss to the uplink, and the additional impact of downlink power sharing on the uplink can be eliminated. The transceiver combiner 1 is connected to the radio frequency channel 4, and each power sharing module 2 is respectively connected to 2 transmitting channels 7 and 2 transceiver combiners 1, and the 2 transmitting channels 7 belong to 2 RRUs respectively, and the 2 transceiver combiners 1 belong to 2 RRUs respectively, that is, the number of transmitting channels 7 and the number of transceiver combiners 1 connected to each power sharing module 2 correspond to the number of RRUs (the first preset number is 2). During implementation, one transmission channel 7 is taken from each of the two RRUs, and the selected transmission channels 7 are designed to be adjacent to each other in physical position. Thus, taking a group of transmission channels 7 designed to be adjacent to each other as an example, power sharing of the group of transmission channels 7 can be realized. Since the transceiver combiner 1 is behind the power sharing module 2, the transceiver combiner 1 is directly connected to the receiving channel 6, and the received signal does not need to pass through the power sharing module 2, so it will not cause insertion loss to the uplink, and there is no need for power allocation in the baseband link, which saves the baseband processing resources to a great extent. Similarly, the remaining groups of transmission channels 7 are also designed to be adjacent to each other in physical position, or in other words, the power sharing function can be realized between the first preset number of transmission channels 7 connected to any power sharing module 2.

[0040] It should be noted that it is necessary to design an identification for the output port of the merged RRU, for example, the output port of the merged RRU can be distinguished by color, graphic symbols or text to distinguish which 4-RF channel RRU it belongs to before the merger. And for multi-channel RRU (such as 4-RF channel RRU), due to antenna calibration (explained later), each channel also needs to be identified in sequence, for example, numbered 1, 2, 3, 4 from left to right, or numbered 1, 2, 3, 4 from right to left. And it should be noted that each transmitting channel 7 and each receiving channel 6 are provided with a power amplifier 5 for increasing the power amplitude of the input signal.

[0041] Design of calibration channel 9: A calibration link needs to be added before the power sharing module 2, such as Figure 1 As shown, the calibration link refers to the link formed after the coupler 3 is set on the two transmission channels 7 connected to the power sharing module 2. And the amplitude phase difference of each pair of calibration links (the amplitude phase difference of each pair of calibration links, in the embodiment of the present invention, refers to the amplitude phase difference between the first preset number of transmission channels 7) must meet the index requirements. Under normal circumstances, the amplitude difference does not exceed 0.1dB, and the phase difference does not exceed 5 degrees. In the specific implementation, a calibration channel 9 can be set, and a coupling calibration network (i.e., a calibration link) is added before the power sharing module 2, that is, a second preset number of calibration links are set (the number of calibration links corresponds to the number of power sharing modules 2), each pair of calibration links is set between the power sharing module 2 and the first preset number of transmission channels 7 connected to the power sharing module 2, for calibrating the power sharing module 2, and each pair of calibration links includes: a coupler 3 set on the first preset number of transmission channels 7, that is, the output of the power amplifier 5 of each transmission channel 7 is directly connected to the coupler 3, and the coupler 3 is directly connected to the power sharing module 2, and the receiving and transmitting circuit 1 is realized after the power sharing module 2.

[0042] In a possible implementation, the merged RRU also includes: a calibration port 8, a calibration channel 9 and a combiner 10, wherein the calibration port 8 is used to calibrate the antenna connected to the merged RRU when the merged RRU is in use; a second preset number of calibration links are combined by the combiner 10 and then connected to the calibration channel 9; a switch 11 is provided between the calibration channel 9 and the calibration port 8; wherein, when the switch 11 is turned on, the calibration link and the calibration port 8 share the calibration channel 9 in a time-division manner; and when the switch 11 is turned off, the calibration link is connected to the calibration channel 9 alone.

[0043] It is understandable that the newly designed calibration link (power sharing calibration link) and the original calibration port 8 (used to calibrate the antenna connected to the combined RRU when the combined RRU is used) can share the existing calibration channel 9 in a time-division manner. That is: the second preset number of calibration links are connected to the calibration channel 9 after being combined by the combiner 10, and a switch 11 is provided between the calibration channel 9 and the calibration port 8; when the switch 11 is turned on, the calibration link and the calibration port 8 share the calibration channel 9 in a time-division manner; when the switch 11 is turned off, the calibration link is connected to the calibration channel 9 alone. Therefore, on the basis of the original structure, through the design of switch merging, it is possible to realize that the calibration link and the calibration port 8 share the calibration channel 9, or the calibration link is connected to the calibration channel 9 alone. Therefore, diversified calibration is achieved through a simple design method, which can meet the actual calibration needs, and while making full use of power, accurate control of power at a low cost is achieved.

[0044] It should be noted that when the combined RRU needs to be connected to two independent antennas that need to be calibrated, two independent calibration ports 8 need to be designed on the combined RRU. If antenna calibration is not required, calibration port 8 is not considered, and only a power sharing calibration design and calibration channel 9 need to be added.

[0045] It should be noted that when the power sharing module 2 processes the downlink transmission signal, a specific phase adjustment method needs to be pre-configured in the power sharing module 2 so as to Figure 1 Taking any of the power sharing modules 2 shown as an example, when the signals in the two transmitting channels 7 connected to the power sharing module 2 pass through the power sharing module 2, they will be processed into signals with the same phase and superimposed, and sent to any transceiver combiner 1 connected to the power sharing module 2. Correspondingly, the signals in the other transceiver combiner have opposite phases and cancel each other out, thereby achieving power sharing of the two transmitting channels 7.

[0046] Based on the above antenna calibration method, the connection method between the combined RRU and the antenna is further described. Figure 3 As shown, the combined RRU is an 8-RF channel combined RRU, and the antenna has two sides as an example (and it should be noted that Figure 3 In the structure of the combined RRU Figure 1 When the first preset number is 2 and the second preset number is 4, the merged RRU is an 8-RF channel merged RRU; the first preset number of RRUs are respectively a first 4-RF channel RRU and a second 4-RF channel RRU, and the 8-RF channel merged RRU is used as two 4-RF channel RRUs, and power is shared between the two 4-RF channel RRUs.

[0047] When the 8-RF channel combined RRU is in use, it is connected to the antenna. When the antenna is the first antenna A and the second antenna B, the four RF channels 4 (in Figure 3 In the example, the 1st, 3rd, 5th, and 7th RF channels (counted from left to right) are connected to the four ports of the first antenna A in sequence, and the 4 RF channels 4 of the second 4-RF channel RRU are connected to the four ports of the second antenna B (counted from left to right, the 2nd, 4th, 6th, and 8th RF channels) in sequence; or, the 4 RF channels 4 of the first 4-RF channel RRU are connected to the four ports of the second antenna B in sequence, and the 4 RF channels 4 of the second 4-RF channel RRU are connected to the four ports of the first antenna A in sequence. And assuming that the calibration port 8 of the 8-RF channel merged RRU includes: the first calibration port 8 and the second calibration port 8, when connected, the calibration port C of the first antenna A is connected to the first calibration port 8, and the calibration port D of the second antenna B is connected to the second calibration port 8; or, the calibration port C of the first antenna A is connected to the second calibration port 8, and the calibration port D of the second antenna B is connected to the first calibration port 8. In other words, as long as the 4 RF channels 4 from the same 4-RF channel RRU are connected to the four ports of the same antenna in sequence, it will be sufficient.

[0048] It should be noted that two 4-channel cells can be configured on the BBU side, and the joint information processing function of the two cells (power sharing pre-configuration unit) can be inserted into the physical layer part of the baseband. After passing through the power sharing pre-configuration unit, new baseband information is generated.

[0049] The embodiment of the present invention further provides a base station, such as Figure 4 As shown, the base station includes: at least two power-sharing combined RRUs in the above embodiments, a third antenna E and a fourth antenna F (and it should be noted that, Figure 4 In the example, the structures of the two merged RRUs are the same as Figure 1 The structure of the merged RRU is exactly the same), wherein at least two merged RRUs include: a first 8-RF channel merged RRU and a second 8-RF channel merged RRU; the first 8-RF channel merged RRU includes a first 4-RF channel RRU and a second 4-RF channel RRU; the second 8-RF channel merged RRU includes a third 4-RF channel RRU and a fourth 4-RF channel RRU. Among them, the 4 RF channels 4 of the first 4-RF channel RRU are connected to the four ports of the third antenna E in sequence, and the 4 RF channels 4 of the second 4-RF channel RRU are connected to the four ports of the fourth antenna F in sequence; the 4 RF channels 4 of the third 4-RF channel RRU are connected to the other 4 ports of the third antenna E in sequence, and the 4 RF channels 4 of the fourth 4-RF channel RRU are connected to the other 4 ports of the fourth antenna F in sequence.

[0050] That is to say, the RF channels of the antenna and RRU cannot be connected arbitrarily. The four RF channels 4 belonging to the same RRU need to be connected to the same antenna, and they need to be connected in sequence according to the ports. The third antenna E and the fourth antenna F have 8 ports respectively. In each antenna, 4 ports are connected to the RF channel 4 of an 8-RF channel combined RRU, and the other 4 ports are connected to the RF channel 4 of another 8-RF channel combined RRU.

[0051] And the 4 RF channels 4 connected to the third antenna E of the first 4-RF channel RRU and the 4 RF channels 4 connected to the third antenna E of the third 4-RF channel RRU are configured together as an 8-channel device, which can also be understood as the physical entity RRU and the RRU corresponding to the logical cell are no longer unified, and the RRU corresponding to each logical cell is actually composed of half channels of two physical entity RRUs. In addition, if the first 8-RF channel merged RRU includes two calibration ports 8, and the second 8-RF channel merged RRU also includes two calibration ports 8, then the calibration port G of the third antenna E can be connected to any calibration port 8 of the first 8-RF channel merged RRU, and the calibration port H of the fourth antenna F can be connected to any calibration port 8 of the second 8-RF channel merged RRU, or; the calibration port G of the third antenna E and the calibration port H of the fourth antenna F are respectively connected to the two calibration ports 8 of the first 8-RF channel merged RRU, or; the calibration port G of the third antenna E and the calibration port H of the fourth antenna F are respectively connected to the two calibration ports 8 of the second 8-RF channel merged RRU, and the specific connection method needs to be consistent with the calibration function configuration of the baseband.

[0052] It should be noted that two 8-channel cells can be configured on the BBU side, and the power sharing pre-configuration units of the two cells can be inserted into the physical layer part of the baseband. After passing through the power sharing pre-configuration unit, new baseband information is generated. The baseband information of the newly generated first 4 channels of the cell is combined with the baseband information of the newly generated first 4 channels of another cell, and is sent to the physical entity RRU1 (the first 8 RF channels are combined RRU) through the fronthaul interface. The baseband information of the newly generated last 4 channels of the cell is combined with the baseband information of the newly generated last 4 channels of another cell, and is sent to the physical entity RRU2 (the second 8 RF channels are combined RRU) through the fronthaul interface.

[0053] In summary, in the same group of communication components of the merged RRU, the transmitting channel is connected to the transceiver combiner through a power sharing module, and the transceiver combiner is directly connected to the receiving channel. The received signal does not need to pass through the power sharing unit, so it will not cause insertion loss to the uplink, and there is no need for the baseband link to perform power allocation function, which saves baseband processing resources to a great extent.

[0054] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0055] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods of various embodiments of the present invention.

[0056] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. A power-sharing combined RRU, characterized in that: The merged RRU includes: a first preset number of RRUs and a second preset number of power sharing modules; Each of the RRUs comprises: a second preset number of groups of communication components, each group of the communication components comprises: a transmitting channel, a transceiver combiner, a receiving channel and a radio frequency channel, wherein in the same group of the communication components, the transmitting channel is connected to the transceiver combiner through a power sharing module, the transceiver combiner is directly connected to the receiving channel, and the transceiver combiner is connected to the radio frequency channel; Each of the power sharing modules is respectively connected to a first preset number of transmission channels and a first preset number of transceiver combinations, the first preset number of transmission channels respectively belong to the first preset number of RRUs, and the first preset number of transceiver combinations respectively belong to the first preset number of RRUs.

2. The combined RRU according to claim 1, characterized in that: A power amplifier is provided on each of the transmitting channels and each of the receiving channels.

3. The combined RRU according to claim 1, characterized in that: The combined RRU further includes: a second preset number of calibration links, Each of the calibration links is respectively arranged between the power sharing module and the first preset number of transmission channels connected to the power sharing module, and is used to calibrate the power sharing module; Each of the calibration links includes: a coupler arranged on the first preset number of transmission channels.

4. The combined RRU according to claim 3, characterized in that: The combined RRU also includes: a calibration port, a calibration channel and a combiner, The calibration port is used to calibrate the antenna connected to the combined RRU when the combined RRU is in use; The second preset number of calibration links are connected to the calibration channel after being combined by the combiner; A switch is provided between the calibration channel and the calibration port; when the switch is turned on, the calibration link and the calibration port share the calibration channel in a time-division manner; when the switch is turned off, the calibration link is connected to the calibration channel alone.

5. The combined RRU according to claim 4, characterized in that: When the first preset number is 2 and the second preset number is 4, the merged RRU is an 8-RF channel merged RRU; the first preset number of RRUs are respectively a first 4-RF channel RRU and a second 4-RF channel RRU.

6. The combined RRU according to claim 5, characterized in that: When the 8-RF channel combined RRU is in use, it is connected to the antenna. When the antenna is the first antenna and the second antenna, the 4 RF channels of the first 4-RF channel RRU are connected to the four ports of the first antenna in sequence, and the 4 RF channels of the second 4-RF channel RRU are connected to the four ports of the second antenna in sequence; or, The four RF channels of the first 4-RF channel RRU are connected to the four ports of the second antenna in sequence respectively, and the four RF channels of the second 4-RF channel RRU are connected to the four ports of the first antenna in sequence respectively.

7. The combined RRU according to claim 6, characterized in that: The calibration port comprises: a first calibration port and a second calibration port; The calibration port of the first antenna is connected to the first calibration port, and the calibration port of the second antenna is connected to the second calibration port; Alternatively, the calibration port of the first antenna is connected to the second calibration port, and the calibration port of the second antenna is connected to the first calibration port.

8. A base station, characterized in that: The base station comprises: at least two power-sharing combined RRUs according to any one of claims 1 to 7, a third antenna and a fourth antenna; The at least two merged RRUs include: a first 8-RF channel merged RRU and a second 8-RF channel merged RRU; the first 8-RF channel merged RRU includes a first 4-RF channel RRU and a second 4-RF channel RRU; the second 8-RF channel merged RRU includes a third 4-RF channel RRU and a fourth 4-RF channel RRU.

9. The base station according to claim 8, characterized in that The four radio frequency channels of the first four-radio channel RRU are connected to the four ports of the third antenna in sequence respectively, and the four radio frequency channels of the second four-radio channel RRU are connected to the four ports of the fourth antenna in sequence respectively; The four RF channels of the third 4-RF-channel RRU are connected to the other four ports of the third antenna in sequence, respectively, and the four RF channels of the fourth 4-RF-channel RRU are connected to the other four ports of the fourth antenna in sequence, respectively.

10. The base station according to claim 9, characterized in that The first 8-RF channel combined RRU includes two calibration ports, and the second 8-RF channel combined RRU includes two calibration ports; The calibration port of the third antenna is connected to any calibration port of the first 8-RF channel combined RRU, and the calibration port of the fourth antenna is connected to any calibration port of the second 8-RF channel combined RRU, or; The calibration port of the third antenna and the calibration port of the fourth antenna are respectively connected to two calibration ports of the first 8-RF channel combined RRU, or; The calibration port of the third antenna and the calibration port of the fourth antenna are respectively connected to the two calibration ports of the second 8-RF channel combined RRU.

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