CN116032341A - Configuration method of base station parameters and base station - Google Patents
Configuration method of base station parameters and base station Download PDFInfo
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- CN116032341A CN116032341A CN202310223503.4A CN202310223503A CN116032341A CN 116032341 A CN116032341 A CN 116032341A CN 202310223503 A CN202310223503 A CN 202310223503A CN 116032341 A CN116032341 A CN 116032341A
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Abstract
The invention relates to a configuration method of base station parameters, which comprises the following steps: conventional parameter setting is carried out on the base station; the base station requires the radio frequency coverage unit to report the remote radio frequency parameters; the radio frequency coverage unit acquires and reports the radio frequency working frequency point parameters; and modifying the frequency point in the wireless parameters of the base station into the obtained remote radio frequency parameters, so that the terminal in the action range of the base station uses the frequency represented by the remote radio frequency parameters to communicate with the base station. The invention also relates to a base station. The configuration method of the base station parameters and the base station have the following beneficial effects: the remote radio frequency unit of the original frequency band can be used, and the waste of equipment caused by network upgrading can be avoided.
Description
Technical Field
The present invention relates to the field of wireless communications, and in particular, to a method for configuring base station parameters and a base station.
Background
Base stations are an important component of a wireless mobile communication network, and are generally responsible for radio coverage of an area, i.e. for transmission and reception of radio signals with user terminals. Base stations typically include a baseband unit (BBU) and a Remote Radio Unit (RRU), and base stations employing different communication technologies or specifications, the frequency bands of the radio signals transmitted or received by the base stations are different, and the transmission and reception of the radio signals are mainly related to the remote radio signals. For a communication technology or specification, the transmitting frequency point and the receiving frequency point of the remote radio frequency unit are generally configured to the same radio frequency point. The frequency characteristics or the working frequency band of the remote radio frequency unit can not be modified, and the remote radio frequency unit belongs to the physical characteristics. The characteristics make the remote radio frequency units originally working in the channels unable to be used in the upgraded network after the wireless mobile communication network is upgraded, especially under the condition that signals in a certain frequency band need to be removed, and great waste is brought. For example, since the wireless communication network is upgraded to 5G, signals in the 2.1G frequency band are not allowed to appear in the range of the base station, so that the remote radio units in the LTE base station operating in 2.1G in the 4G era cannot be used in the 5G network, the originally carried service is shifted to the 1.8G frequency band, and the frequency characteristics of the remote radio units cannot be changed, so that a large number of remote radio units in the 2.1G frequency band can only be scrapped for network withdrawal.
Disclosure of Invention
The invention aims to solve the technical problem that the prior art cannot use the original radio frequency component due to network upgrading, so that great waste is caused, and provides a configuration method of base station parameters and a base station capable of using the original radio frequency component.
The technical scheme adopted for solving the technical problems is as follows: the configuration method for constructing the base station parameters comprises the steps that a base band unit of a base station is connected with a remote radio frequency unit, and the remote radio frequency unit is connected with an antenna through a radio frequency coverage unit; the configuration method of the base station parameters comprises the following steps:
a) Conventional parameter setting is carried out on the base station according to the physical parameters of the remote radio frequency unit, and at the moment, the ground parameters of the base station are consistent with the frequency point parameters in the wireless parameters, and the ground parameters and the frequency point parameters are radio frequency points of the remote radio frequency unit;
b) The radio frequency coverage unit acquires and reports remote radio frequency parameters; the remote radio frequency parameters comprise frequency points of radio frequency signals which are sent to the antenna or received from the antenna by the radio frequency coverage unit through the connecting end of the antenna;
c) After the base station obtains the remote radio frequency parameters, maintaining the original set ground parameters unchanged, and modifying the frequency points in the wireless parameters of the base station into the obtained remote radio frequency parameters, so that the frequency point parameters in the wireless parameters of the base station are not identical with the frequency points in the ground parameters, and a terminal in the action range of the base station uses the frequency represented by the remote radio frequency parameters to communicate with the base station;
the radio frequency coverage unit realizes frequency transfer between a user terminal and a remote radio frequency unit which respectively work on different frequency bands, so that information transmission is realized between the terminal and the baseband unit.
Further, the baseband unit requests the remote radio frequency coverage unit to report the remote radio frequency parameters thereof through the remote radio frequency unit, and the radio frequency coverage unit transmits the remote radio frequency parameters to the remote radio frequency unit through an SCTP protocol; the frequency point corresponding to the remote radio frequency parameter is located in a 1.8G frequency band; the working frequency point of the remote radio frequency unit is located in a 2.1G frequency band.
Furthermore, the radio frequency coverage unit converts the signal from the remote radio frequency unit to a frequency point corresponding to the remote radio frequency parameter through two independent frequency conversion circuits and transmits the signal to the antenna, and also converts the signal from the antenna to a radio frequency point where the remote radio frequency unit works and transmits the signal to the remote radio frequency unit.
Furthermore, the radio frequency coverage unit performs information interaction with the remote radio frequency unit in the format of the SCPT protocol through a communication port; the communication port is arranged on the radio frequency coverage unit and is connected with the remote radio frequency unit in an optical or electrical mode.
Further, the radio frequency coverage unit reads the stored current remote radio frequency parameters and uploads the current remote radio frequency parameters to the remote radio frequency unit through the communication port, and the remote radio frequency unit transmits the received remote radio frequency parameters to the baseband unit to report the remote radio frequency parameters; the remote radio frequency parameters are obtained in the radio frequency coverage unit by reading a dial switch or by software configuration and stored in a designated position in the radio frequency coverage unit.
The invention also relates to a base station, which comprises a baseband unit, a far-end radio frequency unit and an antenna, and also comprises a radio frequency coverage unit, wherein the baseband unit is connected with the far-end radio frequency unit, the radio frequency coverage unit is connected between the antenna and the far-end radio frequency unit and is used for realizing frequency conversion between the far-end radio frequency unit and the antenna, and converting a first frequency band radio frequency signal of one set frequency band output by the far-end radio frequency unit into a second frequency band radio frequency signal of another set frequency band to appear on the antenna, so that the base station can not generate or can not cause to generate a radio frequency signal of the first frequency band in the action direction; the base station is enabled to communicate with the base station by adopting radio frequency signals of a second frequency band through a mode of reconfiguring wireless parameters of the base station.
Further, the baseband unit requests the radio frequency coverage unit to upload the remote radio frequency parameters thereof through the remote radio frequency unit, after receiving the remote radio frequency parameters, the baseband unit modifies the wireless parameters in the parameter configuration thereof, and uses the obtained remote radio frequency parameters as working frequency points in the wireless parameters, so that a terminal in the action range of the baseband unit sends or receives the second frequency band radio frequency signals; the remote radio frequency parameters comprise radio frequency working frequency points at one end, connected with the antenna, of the radio frequency coverage unit; the first frequency band comprises a 2.1G frequency band and the second frequency band comprises a 1.8G frequency band.
Further, the radio frequency coverage unit comprises a communication port, and the communication port is connected to a corresponding port of the remote radio frequency unit in an optical or electrical physical manner and performs information interaction with the remote radio frequency unit through an SCTP protocol.
Further, the radio frequency coverage unit comprises a digital filter, and the position and the bandwidth of the digital filter are configured to determine the output radio frequency point; the remote radio frequency parameters are radio frequency bands and radio frequency points which represent the central frequency of the digital filter, are obtained by reading the position of a dial switch or directly configuring the dial switch through software, and are stored in the appointed position of the remote radio frequency coverage unit.
Still further, the radio frequency coverage unit comprises two separate mixing branches for changing the signals from the antenna to the remote radio unit and from the remote radio unit to the antenna, respectively, the two mixing branches having separate local oscillators, respectively.
The configuration method of the base station parameters and the base station have the following beneficial effects: because the radio frequency coverage unit connected between the far-end radio frequency unit and the antenna is added in the base station, and meanwhile, a base station parameter configuration method different from the prior art is adopted, the far-end radio frequency parameter from the radio frequency coverage unit is used for replacing the frequency point parameter in the radio parameter configured by the original base station, so that the terminal in the action range of the base station can be notified by the base station and adopts the frequency point of the far-end radio frequency parameter instead of the frequency point which is the same as the frequency point in the ground parameter of the base station, and meanwhile, the same frequency as the frequency point in the ground parameter is still used between the base band unit and the far-end radio frequency unit and between the far-end radio frequency unit and the radio frequency coverage unit. Thus, the remote RF unit which cannot be used originally can be used continuously, and the RF frequency of the remote RF unit cannot be transmitted to the space, and the terminal entering the range of the base station cannot transmit signals of the frequency band. Therefore, the remote radio frequency unit of the original frequency band can be used, and the waste of equipment caused by network upgrading are avoided.
Drawings
FIG. 1 is a flow chart of a method for configuring base station parameters according to the present invention and a method for configuring base station embodiments;
fig. 2 is a block diagram of a base station in the embodiment;
fig. 3 is a schematic diagram of the structure of the mixing section in the radio frequency coverage unit in the embodiment.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, in the configuration method of the base station parameters and the base station embodiment of the present invention, the configuration method of the base station parameters is based on a specific base station, and the base station is different from a general base station. In particular, the frequency characteristics of the remote radio units used by such base stations are not suitable for the current frequency band, and the presence of radio signals of such remote radio units within the current base station range can cause significant interference to some frequency bands of the base station. However, since there are a large number of remote radio units in this frequency band in reality, the discarding of such remote radio units would result in significant waste. In this embodiment, the base station with a specific structure and the corresponding base station parameter configuration method are adopted, so that the remote radio units can be used in the current frequency band without affecting the operation of other current devices. In this embodiment, the baseband unit of the base station is connected with the remote radio frequency unit, the remote radio frequency unit is connected with the antenna through the radio frequency coverage unit, and the remote radio frequency unit is connected with the radio frequency coverage unit through a coaxial cable or an optical cable; through reconfiguration of wireless parameters of the base station, the terminal uses a radio frequency band or a frequency point of one end of the radio frequency coverage unit connected with the antenna to communicate with the base station, so that information transmission between the base station and the terminal is realized under the condition that electromagnetic waves of the frequency band of the remote radio frequency unit do not appear in space, and the remote radio frequency units can be used in a mobile wireless network, thereby avoiding waste of equipment. In this embodiment, as shown in fig. 1, the method for configuring the base station parameters includes the following steps:
step S11, according to parameters of the remote radio frequency unit, parameter configuration is carried out on the base station: in this step, conventional parameter setting is performed on the base station according to physical parameters of the remote radio unit connected to the baseband unit, where in this embodiment, the physical parameters of the remote radio unit mainly refer to an operating frequency band and an operating frequency point of the remote radio unit, and these parameters are not modifiable for the remote radio unit; meanwhile, the working frequency of the end of the far-end radio frequency unit connected with the baseband unit is consistent with that of the end electrically connected with the antenna. Therefore, in the parameter configuration of the step, the ground parameters of the base station are consistent with the frequency point parameters in the wireless parameters, and the ground parameters and the frequency point parameters are the radio frequency points of the remote radio frequency unit; specifically, the ground parameters of the base station specify the connection characteristics between the base band unit and the remote radio unit of the base station; the wireless parameters are the content of the configuration which needs to be adopted by the base station when the terminal entering the action range of the wireless parameters is communicated with the base station, and the wireless parameters comprise the radio frequency points of the communication between the terminal and the base station.
Step S12 requires reporting the remote rf parameters: in this step, the baseband unit of the base station requests or searches for the remote rf parameters of the rf coverage unit. In this embodiment, the remote radio frequency parameter of the radio frequency coverage unit includes a frequency point of a radio frequency signal that is sent to the antenna or received from the antenna by the radio frequency coverage unit through its connection end connected to the antenna. In this embodiment, the baseband unit of the base station is not directly connected or in communication with the radio frequency coverage unit, and the baseband unit searches the remote radio frequency parameter on the remote radio frequency unit through CPRI (common public radio interface). In a conventional or existing remote radio unit, the remote radio parameter is not actually available, so in this embodiment, the remote radio unit needs to obtain the parameter actively or passively. Under the condition of actively acquiring the parameter, the remote radio frequency unit requests the radio frequency coverage unit to report the parameter, and executes step S13; in the case of passive acquisition of the parameter, the data that the rf coverage unit actively reports when the rf coverage unit is connected to the remote rf unit may be acquired and uploaded by the rf coverage unit (i.e., most of the content in step S13 is also executed), but the execution time sequence is different and is started after the rf coverage unit is connected or powered up. In other words, in the present embodiment, some cases are performed in accordance with the steps shown in fig. 1, and in other cases, the order in which step S13 is performed may be different, relatively independent of other steps. In this embodiment, the remote rf unit and the rf coverage unit are connected together through a communication port disposed on the rf coverage unit, where the communication port includes an interface for transmitting SCTP (stream control transmission protocol) or an RS232 or RS485 standard interface, and the remote rf unit is also connected with an appropriate interface, and the remote rf unit and the rf coverage unit are connected through an optical cable or a cable. This enables information interaction between the remote radio unit and the radio coverage unit.
Step S13, the radio frequency coverage unit obtains and reports the remote radio frequency parameters: in this step, the radio frequency coverage unit obtains and reports the remote radio frequency parameters to the remote radio frequency unit under the requirement of the remote radio frequency unit; when the rf coverage unit obtains its remote rf parameters (specifically, the rf coverage unit itself transmits or receives the frequency points to the antenna end), the parameters are transmitted to the remote rf unit through the connection, and the remote rf unit obtains the remote rf parameters and stores them in a designated storage location. In this embodiment, the key device for determining the radio frequency point transmitted by the radio frequency coverage unit is a digital filter, that is, the output radio frequency point is determined by configuring the frequency position and the bandwidth (i.e., the frequency characteristic) of the digital filter; the remote radio frequency parameters are the radio frequency band and the radio frequency point where the central frequency of the digital filter is located, are obtained by reading the position of a dial switch or directly configuring the dial switch through software, and are stored in the appointed position of the remote radio frequency coverage unit. For example, the positions of the different dial switches represent or correspond to different, set remote radio frequency parameters, and it is of course also possible to set the remote radio frequency parameters through the debug port of the radio frequency coverage unit itself or/and using software in case the radio frequency coverage unit has a debug port and set software. In this step, the remote rf parameters are read from the designated location and uploaded to the remote rf unit through the communication port.
Step S14, configuring the wireless parameters according to the obtained remote radio frequency parameters, and using the frequency points represented by the obtained remote radio frequency parameters as radio frequency points in the wireless parameters: in this step, after obtaining the remote radio frequency parameter, the base station maintains the originally set ground parameter unchanged, and modifies the frequency point in the radio parameter of the base station to the obtained remote radio frequency parameter, so that the frequency point parameter in the radio parameter of the base station is not identical to the frequency point in the ground parameter, and the terminal in the action range of the base station uses the frequency represented by the remote radio frequency parameter to communicate with the base station. As described above, when a new terminal enters its range, the base station informs the terminal of parameters to be configured for communication with the base station, and the ground parameters of the base station are parameter sets for defining terminal configuration. When the frequency point is modified, the incoming terminal uses the frequency point to communicate with the base station. Therefore, as long as the frequency point indicated by the remote radio frequency parameter is in the current frequency band, the radio frequency signals sent and received by the antenna are in the current frequency band, the influence on other frequency bands used at present is avoided, meanwhile, the wave band used between the baseband unit and the remote radio frequency unit is not changed, and the wave band of the remote radio frequency unit is also not changed, but the signals of the wave band are not sent into the air as electromagnetic waves.
In this way, on the base station with special structure, the configuration method of the base station parameters can automatically modify the wireless parameters of the base station, so that the added radio frequency coverage unit can be organically combined with the baseband unit, the remote radio frequency unit with the network-removed frequency parameters and the terminal and matched with each other, the communication between the terminal and the base station is realized under the condition of not violating the prior frequency band regulation, a large amount of prior equipment is utilized, and a large amount of equipment cost is saved.
In a specific example of this embodiment, the frequency point corresponding to the remote radio frequency parameter is located in the 1.8G frequency band, and the operating frequency point of the remote radio frequency unit is located in the 2.1G frequency band. In other words, the radio frequency coverage unit realizes frequency transfer between the user terminal and the remote radio frequency unit respectively operating on different frequency bands, for the signal from the baseband unit to the terminal, the radio frequency coverage unit transfers the signal from the 2.1G frequency band to the 1.8G frequency band, and for the signal from the terminal to the baseband unit through the antenna, the radio frequency coverage unit converts the signal from the 1.8G frequency band to the 2.1G frequency band, so that the terminal is configured to the corresponding frequency band (e.g. 1.8G frequency band) under the notification of the baseband unit, and thus information transmission between the terminal and the baseband unit can be realized.
More specifically, the radio frequency coverage unit converts signals from the remote radio frequency unit to frequency points corresponding to remote radio frequency parameters through two independent frequency conversion circuits, and transmits the signals to the antenna; meanwhile, the other path converts the signal from the antenna to the radio frequency point where the remote radio frequency unit works and transmits the signal to the remote radio frequency unit.
The invention also relates to a base station, the structure of which is shown in fig. 2, and the specific structure of a radio frequency coverage unit is shown in fig. 3. As shown in fig. 2, the base station includes a baseband unit, a remote radio unit, a radio coverage unit, and an antenna. The base band unit and the far-end radio frequency unit are connected through an optical fiber, the radio frequency coverage unit is connected between the antenna and the far-end radio frequency unit and is used for realizing frequency conversion between the far-end radio frequency unit and the antenna, and a first frequency band radio frequency signal (for the far-end radio frequency unit, the frequency of the radio frequency signal of the first frequency band cannot be changed) output by the far-end radio frequency unit is converted into a second frequency band radio frequency signal of another set frequency band, so that the base station cannot generate (for the base station itself) or cannot generate (for a terminal communicating with the base station) the radio frequency signal of the first frequency band in the action range of the base station; for the terminal, the base station reconfigures its wireless parameters so that the terminal in its action range adopts the second frequency band radio frequency signal to communicate with the base station. In this embodiment, the first frequency band includes a 2.1G frequency band, and the second frequency band includes a 1.8G frequency band. For the existing 5G mobile network, the 2.1G signal is not allowed to appear in the range of the base station because the signal in the frequency band can cause stronger interference to the 5G signal. The radio frequency coverage unit also comprises a communication port, wherein the communication port is connected to a corresponding port of the remote radio frequency unit in an optical or electrical physical mode, and performs information interaction with the remote radio frequency unit through an SCTP protocol or other protocols.
In this embodiment, since there is a radio frequency coverage unit, when the base station parameters are configured by adopting a commonly used base station parameter configuration method, the base station having the structure in fig. 2 cannot be made to operate normally. Therefore, the software of the base station is modified to be upgraded, the step of collecting the remote radio frequency parameters of the radio frequency coverage unit is added besides the original parameter configuration step or method, and the collected remote radio frequency parameters of the radio frequency coverage unit are used for replacing radio frequency point parameters in the radio parameters of the base station, so that the terminal uses a second frequency band radio frequency signal to communicate with the base station under the notification of the base station after entering the action range of the base station. After the above reconfiguration of the base station parameters (specifically, the ground parameters of the base station), the base station can work normally. Specifically, the baseband unit requests the radio frequency coverage unit to upload the remote radio frequency parameters through the remote radio frequency unit, after receiving the remote radio frequency parameters, the baseband unit modifies the wireless parameters in the parameter configuration, and uses the obtained remote radio frequency parameters as working frequency points in the wireless parameters, so that a terminal in the action range of the baseband unit sends or receives the second frequency band radio frequency signals; in this embodiment, the remote rf parameter is an rf operating frequency point, i.e. an rf frequency, at the end of the rf coverage unit connected to the antenna. In this embodiment, in the rf coverage unit, a main component for determining an rf frequency point at a connection end of the rf coverage unit and the antenna is a digital filter, and an output rf frequency point is determined by configuring a position and a bandwidth (i.e., frequency characteristics) of the digital filter; the remote radio frequency parameters are the radio frequency band and the radio frequency point where the central frequency of the digital filter is located, are obtained by reading the position of a dial switch or directly configuring the dial switch through software, and are stored in the appointed position of the remote radio frequency coverage unit. When the dial switch is used for configuration, a frequency characteristic corresponding to the position of the dial switch is usually set, so that the corresponding parameter can be obtained by reading the value of the dial switch to configure the digital filter. Of course, when the debugging port and the configuration software exist on the radio frequency coverage unit, the configuration can also be directly performed by the software. Regardless of the configuration mode, the configuration parameters currently used by the digital filter are saved after the digital filter is configured, and in this embodiment, the corresponding remote rf parameters are obtained by obtaining the current configuration parameters.
As shown in fig. 3, in the present embodiment, the radio frequency coverage unit includes two separate mixing branches for changing the signal frequencies from the antenna to the remote radio unit and from the remote radio unit to the antenna, respectively, and the two mixing branches have separate local oscillators, respectively. In fig. 3, a first frequency band radio frequency signal from a remote radio frequency unit enters a frequency mixing 1 module through an attenuator and a duplexer 1, is mixed with a local oscillator signal output by a local oscillator 1 to obtain a second frequency band radio frequency signal, and then is amplified by a power amplifier, enters a duplexer 2 and is input to an antenna, so that a signal transmitted by the antenna is the second frequency band radio frequency signal; similarly, after receiving the second frequency band radio frequency signal sent by the terminal, the antenna enters a low noise amplifier through a duplexer 2 to amplify, then enters a frequency mixing 2 module to mix with the local oscillation signal output by the local oscillation 2 to obtain a first frequency band radio frequency signal, and the first frequency band radio frequency signal is transmitted to the remote radio frequency unit through the duplexer 1 and an attenuator. Therefore, the radio frequency coverage unit realizes bidirectional frequency shifting of radio frequency signals between the first frequency band and the second frequency band between the remote radio frequency unit and the antenna, so that the remote radio frequency unit working in the 2.1G frequency band can be used in the 1.8G frequency band and meets the requirement of the 5G standard on the frequency channel.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. The configuration method of the base station parameters is characterized in that a baseband unit of the base station is connected with a remote radio frequency unit, and the remote radio frequency unit is connected with an antenna through a radio frequency coverage unit; the configuration method of the base station parameters comprises the following steps:
a) Conventional parameter setting is carried out on the base station according to the physical parameters of the remote radio frequency unit, and at the moment, the ground parameters of the base station are consistent with the frequency parameters in the wireless parameters, and are all physical parameters of the remote radio frequency unit;
b) The radio frequency coverage unit acquires and reports remote radio frequency parameters of the radio frequency coverage unit, wherein the remote radio frequency parameters comprise radio frequency signal frequency points which are sent to or received from the antenna by the connection end of the radio frequency coverage unit and the antenna;
c) After the base station obtains the remote radio frequency parameters, maintaining the original set ground parameters unchanged, and modifying the frequency points in the wireless parameters of the base station into the obtained remote radio frequency parameters, so that the frequency point parameters in the wireless parameters of the base station are not identical with the frequency points in the ground parameters, and a terminal in the action range of the base station uses the frequency represented by the remote radio frequency parameters to communicate with the base station;
the radio frequency coverage unit realizes frequency transfer between a user terminal and a remote radio frequency unit which respectively work on different frequency bands, so that information transmission is realized between the terminal and the baseband unit.
2. The method for configuring base station parameters according to claim 1, wherein the baseband unit requests the remote radio frequency coverage unit to report the remote radio frequency parameters through the remote radio frequency unit, and the radio frequency coverage unit transmits the remote radio frequency parameters to the remote radio frequency unit and then uploads the remote radio frequency parameters to the baseband unit; the frequency point corresponding to the remote radio frequency parameter is located in a 1.8G frequency band; the working frequency point of the remote radio frequency unit is located in a 2.1G frequency band.
3. The method for configuring base station parameters according to claim 2, wherein the radio frequency coverage unit converts signals from the remote radio frequency unit to frequency points corresponding to the remote radio frequency parameters through an independent frequency conversion line and transmits the signals to the antenna; and the signal from the antenna is converted to a radio frequency point of the remote radio frequency unit through another independent frequency conversion circuit and is transmitted to the remote radio frequency unit.
4. The method for configuring base station parameters according to claim 3, wherein the radio frequency coverage unit performs information interaction with the remote radio frequency unit in a format of SCPT protocol through a communication port; the communication port is arranged on the radio frequency coverage unit and is connected with the corresponding port of the remote radio frequency unit in an optical or electrical mode.
5. The method for configuring base station parameters according to claim 4, wherein the radio frequency coverage unit reads the stored current remote radio frequency parameters and uploads the current remote radio frequency parameters to the remote radio frequency unit through the communication port, and the remote radio frequency unit transmits the received remote radio frequency parameters to the baseband unit to report the remote radio frequency parameters; the remote radio frequency parameters are obtained in the radio frequency coverage unit by reading a dial switch or by software configuration and stored in a designated position in the radio frequency coverage unit.
6. The base station comprises a baseband unit, a far-end radio frequency unit and an antenna, and is characterized by further comprising a radio frequency coverage unit, wherein the baseband unit is connected with the far-end radio frequency unit, the radio frequency coverage unit is connected between the antenna and the far-end radio frequency unit and is used for realizing frequency conversion between the far-end radio frequency unit and the antenna, and converting a first frequency band radio frequency signal of one set frequency band output by the far-end radio frequency unit into a second frequency band radio frequency signal of another set frequency band to appear on the antenna, so that the base station can not generate or can not cause to generate a radio frequency signal of the first frequency band in the action range; the base station is enabled to communicate with the base station by adopting radio frequency signals of a second frequency band through a mode of reconfiguring wireless parameters of the base station.
7. The base station according to claim 6, wherein the baseband unit requests the radio frequency coverage unit to upload its remote radio frequency parameters through the remote radio frequency unit, and after receiving the remote radio frequency parameters, the baseband unit modifies wireless parameters in its parameter configuration, and uses the obtained remote radio frequency parameters as working frequency points in the wireless parameters, so that a terminal within its action range sends or receives the second frequency band radio frequency signals; the remote radio frequency parameters comprise radio frequency working frequency points at one end, connected with the antenna, of the radio frequency coverage unit; the first frequency band comprises a 2.1G frequency band and the second frequency band comprises a 1.8G frequency band.
8. The base station of claim 7, wherein the radio frequency coverage unit comprises a communication port that is optically or electrically physically connected to a corresponding port of the remote radio frequency unit and performs information interaction with the remote radio frequency unit via an SCTP protocol.
9. The base station according to claim 8, wherein the radio frequency coverage unit includes a digital filter, and the output radio frequency point is determined by configuring a position and a bandwidth of the digital filter; the remote radio frequency parameters are radio frequency bands and radio frequency points which represent the central frequency of the digital filter, are obtained by reading the position of a dial switch or directly configuring the dial switch through software, and are stored in the appointed position of the remote radio frequency coverage unit.
10. The base station of claim 9, wherein the radio frequency coverage unit comprises two separate mixing branches for changing the frequency band in which the signal frequency from the antenna to the remote radio unit is located and the frequency band in which the signal frequency from the remote radio unit to the antenna is located, respectively, the two mixing branches having separate local oscillators, respectively.
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