CN115940984A - Radio frequency amplifying device and power control method and networking method thereof - Google Patents
Radio frequency amplifying device and power control method and networking method thereof Download PDFInfo
- Publication number
- CN115940984A CN115940984A CN202111006094.XA CN202111006094A CN115940984A CN 115940984 A CN115940984 A CN 115940984A CN 202111006094 A CN202111006094 A CN 202111006094A CN 115940984 A CN115940984 A CN 115940984A
- Authority
- CN
- China
- Prior art keywords
- signal
- circuit
- radio frequency
- switch
- time slot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The radio frequency amplifying device comprises a coupling circuit, a synchronous detection unit and a synchronous control unit, wherein the synchronous control unit is respectively connected with a first switch, a power amplifying circuit, a second switch and a low-noise amplifying circuit. The coupling circuit is used for receiving a downlink radio frequency signal of a signal source and sampling; the synchronous detection unit is used for acquiring a synchronous signal and a time slot matching characteristic signal based on the extracted radio frequency signal; the synchronous control unit is used for automatically configuring the parameters of the synchronous control unit based on the synchronous signal and the time slot proportioning signal, so that the first switch, the power amplification circuit, the second switch and the low-noise amplification circuit have the same time sequence logic with the radio-frequency signal. By automatically acquiring the synchronous signal and time slot ratio and automatically controlling gain, the intelligent degree of the radio frequency amplification device is greatly improved, the station starting efficiency is improved, and the maintenance workload is reduced.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a radio frequency amplification apparatus, a power control method thereof, and a networking method.
Background
In a communication radio frequency relay amplifying device, for relay amplification of a radio frequency (TD-NR) signal, the switch timing logic of a radio frequency amplifying circuit needs to be controlled to be consistent with the relay amplified radio frequency (TD-NR) signal.
In the traditional method, a station is surveyed first, a time slot ratio signal of a radio frequency (TD-NR) signal is obtained by a third party, and then the time slot ratio signal is manually set to a synchronous control module of relay amplification equipment, so that the efficiency is low, once a base station changes the uplink and downlink time slot ratio according to the service requirement, the control parameters of related circuits of the relay amplification equipment need to be manually adjusted, and the maintenance is complicated.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The present disclosure aims to overcome the problems of low station opening efficiency and complex maintenance of the existing communication radio frequency relay amplification equipment, and provides a radio frequency amplification device, a power control method thereof and a networking method thereof.
According to an aspect of the present disclosure, there is provided a radio frequency amplifying device including: the synchronous control unit is respectively connected with the first switch, the power amplification circuit, the second switch and the low-noise amplification circuit, and the first switch, the power amplification circuit, the second switch and the low-noise amplification circuit are mutually connected to form a closed loop; the coupling circuit is used for receiving a downlink signal of a signal source and sampling the downlink signal; the synchronous detection unit is used for acquiring a synchronous signal and a time slot ratio characteristic signal based on the extracted radio frequency signal; the synchronous control unit is used for determining the positions of all time slots based on the synchronous signals and the time slot proportioning signals, determining that the positions of the time slots are in a downlink time slot or an uplink time slot, and if the positions of the time slots are in the downlink time slot, controlling the first switch to transmit the downlink signals to the power amplification circuit and output the downlink signals to the antenna or the next-stage radio frequency amplification device through the second switch; and if the position of the time slot is in the uplink time slot, controlling the second switch to transmit the radio-frequency signal of the antenna or the next-stage radio-frequency amplification device to the low-noise amplification circuit, amplifying the radio-frequency signal by the low-noise amplification circuit, transmitting the amplified radio-frequency signal to the coupling circuit through the first switch, and transmitting the amplified radio-frequency signal to the information source by the coupling circuit.
In one embodiment of the present disclosure, the synchronization control unit includes a detector subunit, a voltage comparison subunit, and a signal processing subunit, the detector subunit is configured to output a periodic pulse voltage signal based on the synchronization signal and the time-slot proportioning signal, a start time of the periodic pulse voltage signal depends on the synchronization signal, and a duty ratio depends on the time-slot proportioning signal; the voltage comparison subunit is used for determining the position of the falling edge of the downlink pilot time slot based on the periodic pulse voltage signal; the signal processing subunit is configured to determine positions of all time slots based on a falling edge position of the downlink pilot time slot, and determine that the position of the time slot is in the downlink time slot or the uplink time slot according to a preset uplink and downlink time slot with the falling edge of the downlink pilot time slot as a starting point.
In an embodiment of the present disclosure, the first switch and the second switch are single-pole double-throw switches, a first leg of the first switch is connected to the coupling circuit, a first leg of the second switch is connected to the antenna or the next stage of radio frequency amplification device, second legs of the first switch and the second switch are connected to the low noise amplification circuit, third legs of the first switch and the second switch are connected to the power amplification circuit, when the position of the timeslot is in the downlink timeslot, the first legs of the first switch and the second switch are both connected to the third leg, the low noise amplification circuit is turned off, and the power amplification circuit is turned on; when the position of the time slot is in the uplink time slot, the first support legs of the first switch and the second switch are connected to the second support leg, the low-noise amplifying circuit is turned on, and the power amplifying circuit is turned off.
In an embodiment of the present disclosure, the apparatus further includes a power detection and control circuit, the power detection and control circuit is located between the first switch and the power amplification circuit, the power detection and control circuit includes a first attenuation circuit, a peak power detection circuit, a second attenuation circuit, and a mean power detection circuit, which are connected in sequence, the peak power detection circuit feeds back to the first attenuation circuit, and the mean power detection circuit feeds back to the first attenuation circuit.
In one embodiment of the present disclosure, the apparatus further includes a power processing and converting unit, connected to the source, for supplying power to the source.
According to another aspect of the present disclosure, there is provided a method for power control of a radio frequency amplification apparatus according to an aspect of the present disclosure, including:
receiving a downlink radio frequency signal of a signal source and sampling;
acquiring a synchronous signal and a time slot matching characteristic signal based on the extracted radio frequency signal;
determining the positions of all time slots based on the synchronization signal and the time slot proportioning signal, and determining the positions of the time slots to be in a downlink time slot or an uplink time slot,
if the position of the time slot is in the downlink time slot, controlling the first switch to transmit the downlink signal to the power amplification circuit, and outputting the downlink signal to the antenna or the next-stage radio frequency amplification device through the second switch;
if the position of the time slot is in the uplink time slot, the second switch is controlled to transmit the radio-frequency signal of the antenna or the next-stage radio-frequency amplification device to the low-noise amplification circuit, the low-noise amplification circuit amplifies the radio-frequency signal and then transmits the amplified radio-frequency signal to the coupling circuit through the first switch, and the coupling circuit transmits the amplified radio-frequency signal to the information source.
In one embodiment of the present disclosure, determining the positions of all the slots based on the synchronization signal and the slot proportioning signal includes: outputting a periodic pulse voltage signal based on the synchronization signal and the time slot proportioning signal; determining a falling edge position of a downlink pilot time slot based on the periodic pulse voltage signal; and determining the positions of all time slots based on the falling edge positions of the downlink pilot time slots, and determining that the positions of the time slots are in the downlink time slots or the uplink time slots according to the preset uplink and downlink time slots by taking the falling edge of the downlink pilot time slot as a starting point.
In one embodiment of the present disclosure, the radio frequency amplifying device further includes a power detection and control circuit, which is located between the first switch and the power amplifying circuit, and the power detection and control circuit includes a first attenuation circuit, a peak power detection circuit, a second attenuation circuit, and a mean power detection circuit, which are connected in sequence; the method further comprises the following steps: before the radio-frequency signal enters the power amplifying circuit, the radio-frequency signal is attenuated through the first attenuation circuit, and peak value detection is carried out after the radio-frequency signal is attenuated through the power detection circuit; if the peak value of the radio frequency signal is larger than the set peak value, the peak value is fed back to the first attenuation circuit to continuously attenuate the radio frequency signal until the peak value of the radio frequency signal is smaller than the set peak value; the second attenuation circuit attenuates the radio-frequency signals, and the mean value power detection circuit detects the radio-frequency signals and then performs mean value detection; if the mean value of the radio frequency signals is larger than the set mean value, the radio frequency signals are fed back to the second attenuation circuit to be continuously attenuated until the mean value of the radio frequency signals is smaller than the set mean value.
According to still another aspect of the present disclosure, a networking method for radio frequency amplification devices is provided, the method is applied to a plurality of radio frequency amplification devices according to an aspect of the present disclosure, and adjacent radio frequency amplification devices are connected and communicated through RS 485 interfaces;
before networking is completed, a monitoring unit in each radio frequency amplification device broadcasts an external broadcast equipment address and an equipment ID, the equipment addresses of all the radio frequency amplification devices are 0x1 by default, and the equipment IDs have uniqueness;
after receiving the broadcast and acquiring the ID of the new equipment, comparing the ID of the new equipment with the ID of the current equipment, if the ID of the new equipment is higher than the received ID of the current equipment, adding 1 to the address of the current equipment, otherwise, keeping the ID of the current equipment unchanged;
recording the compared equipment IDs, monitoring that all the equipment IDs are recorded after a preset time T1, automatically switching the radio frequency amplification device with the equipment address of 0x1 to a master machine, and automatically switching the radio frequency amplification devices with other equipment addresses not 0x1 to slave machines.
In one embodiment of the present disclosure, the method further comprises: the master machine periodically sends interactive heartbeat to the slave machine, wherein the heartbeat period is T2; if the slave machine does not receive the heartbeat of the master machine within the time T2, the master machine is considered to be offline, the default addresses of the equipment addresses of all the radio frequency amplification devices are automatically changed to 0x1, and the identification of the master machine and the slave machine is repeatedly carried out.
The radio frequency amplification device comprises a coupling circuit, a synchronous detection unit and a synchronous control unit, wherein the synchronous control unit is respectively connected with a first switch, a power amplification circuit, a second switch and a low-noise amplification circuit, and the first switch, the power amplification circuit, the second switch and the low-noise amplification circuit are mutually connected to form a closed loop; the coupling circuit is used for receiving a downlink radio frequency signal of a signal source and sampling; the synchronous detection unit is used for acquiring a synchronous signal and a time slot matching characteristic signal based on the extracted radio frequency signal; the synchronous control unit is used for automatically configuring the parameters of the synchronous control unit based on the synchronous signal and the time slot proportioning signal, so that the first switch, the power amplification circuit, the second switch and the low-noise amplification circuit have the same time sequence logic with the radio-frequency signal. By automatically acquiring the synchronous signal and time slot ratio and automatically controlling the gain, the intelligent degree of the radio frequency amplification device is greatly improved, the station starting efficiency is improved, and the maintenance workload is reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.
Fig. 1 is a schematic block diagram of a radio frequency amplification device according to an embodiment of the present disclosure;
fig. 2 is a schematic block diagram of a power detection and control circuit according to an embodiment of the disclosure.
Fig. 3 is a flowchart of a method for controlling power of an rf amplifying device according to an embodiment of the disclosure.
Fig. 4 is a schematic structural diagram of a plurality of radio frequency amplification devices in networking according to an embodiment of the present disclosure.
Fig. 5 is a flowchart of a networking method of a radio frequency amplification device according to an embodiment of the present disclosure.
In the figure: 101-source, 102-coupling circuit, 103-synchronous detection unit, 104-synchronous control unit, 105-first switch, 106-power amplification circuit, 107-second switch, 108-low noise amplification circuit, 109-power detection and control circuit, 1091-first attenuation circuit, 1092-peak power detection circuit, 1093-second attenuation circuit, 1094-mean power detection circuit, 110-power processing and conversion unit, and 111-monitoring unit.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus a detailed description thereof will be omitted. Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.
Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.
The terms "a," "an," "the," "said," and "at least one" are used to indicate the presence of one or more elements/components/parts/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.; the terms "first," "second," and "third," etc. are used merely as labels, and are not limiting as to the number of their objects.
As shown in fig. 1, the present disclosure provides a radio frequency amplifying device, including: the synchronous control unit 104 is respectively connected with a first switch 105, a power amplifying circuit 106, a second switch 107 and a low noise amplifying circuit 108, and the first switch 105, the power amplifying circuit 106, the second switch 107 and the low noise amplifying circuit 108 are mutually connected to form a closed loop; the coupling circuit 102 is used for receiving and sampling a radio frequency signal at the source 101 side; the synchronous detection unit 103 is configured to obtain a synchronous signal and a timeslot matching characteristic signal based on the extracted radio frequency signal; the synchronization control unit 104 is configured to determine positions of all time slots based on the synchronization signal and the time slot matching signal, determine that the positions of the time slots are in a downlink time slot or an uplink time slot, and if the positions of the time slots are in the downlink time slot, control the first switch 105 to transmit the downlink signal to the power amplification circuit 106, and output the downlink signal to an antenna or a next-stage radio frequency amplification device through the second switch 107; if the position of the time slot is in the uplink time slot, the second switch 107 is controlled to transmit the antenna or the next stage of radio frequency amplification device to the low noise amplification circuit, the low noise amplification circuit 108 amplifies the radio frequency signal and transmits the amplified radio frequency signal to the first switch 105, the first switch 105 transmits the amplified radio frequency signal to the coupling circuit 102, and the coupling circuit 102 outputs the amplified radio frequency signal to the information source 101.
The coupling circuit 102 is used for receiving a downlink radio frequency signal of the signal source 101 and sampling the downlink radio frequency signal; the synchronous detection unit 103 is configured to obtain a synchronous signal and a timeslot matching characteristic signal based on the extracted radio frequency signal; the synchronization control unit 104 is configured to automatically configure the synchronization control unit 104 parameters based on the synchronization signal and the timeslot matching signal, such that the first switch 105, the power amplifying circuit 106, the second switch 107, and the low noise amplifying circuit 108 have the same timing logic as the radio frequency signal. By automatically acquiring the synchronous signal and time slot ratio and automatically controlling gain, the intelligent degree of the radio frequency amplification device is greatly improved, the station starting efficiency is improved, and the maintenance workload is reduced.
It should be noted that, when the position of the timeslot is in the downlink timeslot, the synchronization control unit 104 controls the power amplification circuit 106 to be turned on, and the low noise amplification circuit 108 to be turned off. When the position of the timeslot is in the uplink timeslot, the synchronization control unit 104 controls the power amplifier circuit 106 to be turned off, and the low noise amplifier circuit 108 to be turned on.
Generally, the synchronization control unit 104 sends a first control signal, and controls the power amplification circuit 106 to be turned on or off through the first control signal. Generally defined as high on and low off, but may be defined as high off and low on. The synchronization control unit 104 sends a second control signal, which is used to control the low-noise amplifier circuit to be turned on or off, and the second control signal is generally defined as high level being on and low level being off, and may be defined as high level being off and low level being on. The synchronization control unit 104 sends a third control signal, and controls the operating states of the first switch 105 and the second switch 107 through the third control signal.
The first switch 105 and the second switch 107 are single-pole double-throw switches, a first leg of the first switch 105 is connected with the coupling circuit, a first leg of the second switch 107 is connected with an antenna or a next-stage radio frequency amplification device, second legs of the first switch 105 and the second switch 107 are connected with the low-noise amplification circuit 108, third legs of the first switch 105 and the second switch 107 are connected with the power amplification circuit 106, when the time slot position is in the downlink time slot, the first legs of the first switch 105 and the second switch 107 are both connected with the third legs, the low-noise amplification circuit 108 is closed, and the power amplification circuit 106 is opened; when the position of the timeslot is in the uplink timeslot and the first legs of the first switch 105 and the second switch 107 are both connected to the second leg, the low noise amplifier circuit 108 is turned on and the power amplifier circuit 106 is turned off.
The synchronization control unit 104 includes a detection subunit, a voltage comparison subunit and a signal processing subunit (not shown in the figure), the detection subunit is configured to output a periodic pulse voltage signal based on the synchronization signal and the time slot matching signal, the start time of the periodic pulse voltage signal depends on the synchronization signal, and the duty ratio depends on the time slot matching signal; the voltage comparison subunit is used for determining the position of the falling edge of the downlink pilot time slot based on the periodic pulse voltage signal; the signal processing subunit is configured to determine positions of all time slots based on a falling edge position of the downlink pilot time slot, and determine that the position of the time slot is in the downlink time slot or the uplink time slot according to a preset uplink and downlink time slot with the falling edge of the downlink pilot time slot as a starting point.
The sub-unit samples two adjacent signals in the sequence pulse as reference signals through an internal timing function, judges whether the time interval between the falling edge of the previous signal and the rising edge of the next signal meets the requirement of the width of a protection time slot in a downlink pilot frequency time slot, namely whether the time interval is 32 chips, if so, continuously judges whether the time interval between the falling edge of the next signal and the rising edge meets the requirement of the width of a synchronization code of the downlink pilot frequency time slot, namely whether the time interval is 64 chips, and if so, determines that the falling edge is the falling edge of the downlink pilot frequency time slot; otherwise, combining a signal adjacent to the reference signal and a signal next to the reference signal into another reference signal, and continuously repeating the judging process. In practice, due to the delay and the detection and shaping errors, a certain error range is allowed when determining the time interval of the falling edge and the rising edge.
As shown in fig. 2, the apparatus further includes a power detection and control circuit 109, the power detection and control circuit 109 is located between the first switch 105 and the power amplifier circuit 106, the power detection and control circuit 109 includes a first attenuator circuit 1091, a peak power detector circuit 1092, a second attenuator circuit 1093, and a mean power detector circuit 1094, which are connected in sequence, the peak power detector circuit 1092 feeds back to the first attenuator circuit 1091, and the mean power detector circuit 1094 feeds back to the first attenuator circuit 1091.
The source may be remotely transmitted through a composite live cable. Compared to optical fibers, electrically conductive cables are typically pulled far on the order of hundreds of meters to at most hundreds of meters. While the fiber can be pulled many tens of kilometers away. In order to avoid the problem of limited distance of the conductive cable, the source 101 needs to be powered locally. Because the remote units are small in size and numerous in number, local power taking is difficult. A power module for taking power locally is configured at the far end of each distributed base station with the remote distance exceeding hundreds of meters, and cost expenditure is not small for a plurality of far ends of the distributed base stations.
Therefore, the apparatus further comprises a power processing and converting unit 110 connected to the source 101 for powering the source 101.
As shown in fig. 3, the present disclosure provides a method for controlling power of a radio frequency amplification device, including:
step S10, receiving a downlink radio frequency signal of a signal source 101 and sampling;
step S20, acquiring a synchronous signal and a time slot ratio characteristic signal based on the extracted radio frequency signal;
step S30, determining the positions of all time slots based on the synchronous signals and the time slot proportioning signals, and determining that the positions of the time slots are in a downlink time slot or an uplink time slot;
step S40, if the position of the time slot is in the downlink time slot, the first switch 105 is controlled to transmit the downlink signal to the power amplifying circuit 106, and the downlink signal is output to the antenna or the next stage of radio frequency amplifying device through the second switch 107;
step S50, if the time slot is located in the uplink time slot, the second switch 107 is controlled to transmit the radio frequency signal to the antenna or the next stage of radio frequency amplification device to the low noise amplification circuit, the low noise amplification circuit 108 amplifies the radio frequency signal and transmits the amplified radio frequency signal to the first switch 105, the first switch 105 transmits the amplified radio frequency signal to the coupling circuit 102, and the coupling circuit 102 transmits the amplified radio frequency signal to the information source 101.
Step S30 includes: outputting a periodic pulse voltage signal based on the synchronization signal and the time slot proportioning signal; determining a falling edge position of a downlink pilot time slot based on the periodic pulse voltage signal; and determining the positions of all time slots based on the falling edge positions of the downlink pilot time slots, and determining that the positions of the time slots are in the downlink time slots or the uplink time slots according to the preset uplink and downlink time slots by taking the falling edge of the downlink pilot time slot as a starting point.
Determining a falling edge position of the downlink pilot time slot based on the periodic impulse voltage signal comprises:
s301, taking any two adjacent signals from the periodic pulse voltage signals as reference signals;
s302, judging whether the time interval of the falling edge of the previous signal and the rising edge of the next signal in the reference signal meets the requirement of the width of the protection time slot in the downlink pilot time slot, if so, turning to the step S304; otherwise, go to step S303;
s303, combining a signal adjacent to the reference signal and a signal next to the reference signal into another reference signal, and turning to the step S302;
s304, judging whether the time interval of the falling edge and the rising edge of the next signal meets the width requirement of the downlink pilot frequency time slot synchronous code, if so, determining the falling edge as the falling edge of the downlink pilot frequency time slot; otherwise, go to step S303.
When the position of the time slot is in a downlink time slot, the synchronous control unit 104 sends a third control signal to control the first legs of the first switch 105 and the second switch 107 to be connected to the third leg, the synchronous control unit 104 is disconnected and connected to send the first control signal, the power amplification circuit 106 is controlled to be opened by the first control signal, and the synchronous control unit 104 sends a second control signal used for controlling the low-noise amplification circuit 108 to be closed by the second control signal; when the position of the time slot is in the upstream time slot, the synchronization control unit 104 sends a third control signal controlling the first leg of both the first switch 105 and the second switch 107 to be connected to the second leg. The synchronization control unit 104 sends a first control signal to control the power amplification circuit 106 to be turned off, and the synchronization control unit 104 sends a second control signal to control the low-noise amplification circuit 108 to be turned on.
The radio frequency amplifying device further comprises a power detection and control circuit 109, which is located between the first switch 105 and the power amplifying circuit 106, wherein the power detection and control circuit 109 comprises a first attenuation circuit 1091, a peak power detection circuit 1092, a second attenuation circuit 1093 and a mean power detection circuit 1094 which are connected in sequence; the method further comprises the following steps: before the radio-frequency signal enters the power amplification circuit 106, the radio-frequency signal is attenuated by the first attenuation circuit 1091, and peak detection is performed after the radio-frequency signal is attenuated by the power detection circuit; if the peak value of the radio frequency signal is larger than the set peak value, the peak value is fed back to the first attenuation circuit 1091 to continuously attenuate the radio frequency signal until the peak value of the radio frequency signal is smaller than the set peak value; the second attenuation circuit 1093 attenuates the radio frequency signal, and performs mean value detection after the radio frequency signal is attenuated by the detection of the mean value power detection circuit 1094; if the mean value of the rf signal is greater than the set mean value, the rf signal is fed back to the second attenuation circuit 1093 to be continuously attenuated until the mean value of the rf signal is less than the set mean value.
In the related art, communication relay amplification equipment is generally maintained independently, the master-slave relationship of each unit in a networking network needs to be set manually even if networking is performed, and once a networking unit is abnormal in communication, the master-slave logical relationship of other network elements is possibly influenced, so that networking communication fails.
Accordingly, the disclosed embodiments provide a networking method for a radio frequency amplification device. As shown in fig. 4 and 5, the method is applied to a plurality of radio frequency amplification devices according to an aspect of the present disclosure, and adjacent radio frequency amplification devices are connected and communicated through an RS 485 interface;
before networking is completed, the monitoring unit 111 in each radio frequency amplification device broadcasts an external broadcast equipment address and an equipment ID, the equipment addresses of all the radio frequency amplification devices are 0x1 by default, and the equipment IDs have uniqueness;
after receiving the broadcast and acquiring the ID of the new equipment, comparing the ID of the new equipment with the ID of the current equipment, if the ID of the new equipment is higher than the received ID of the current equipment, adding 1 to the address of the current equipment, otherwise, keeping the ID of the current equipment unchanged;
recording the compared equipment IDs, monitoring that all the equipment IDs are recorded after a period of time T1, automatically switching the radio frequency amplification device with the address of 0x1 to a master machine, and automatically switching the radio frequency amplification devices with other addresses which are not 0x1 to slave machines.
The method further comprises the following steps: the master machine periodically sends interactive heartbeat to the slave machine, wherein the heartbeat period is T2; if the slave machine does not receive the heartbeat of the master machine within the time T2, the master machine is considered to be offline, the default addresses of the equipment addresses of all the radio frequency amplification devices are automatically changed to 0x1, and the identification of the master machine and the slave machine is repeatedly carried out.
The monitoring unit 111 can automatically identify the host and the slave through mechanisms such as broadcast message, address comparison and judgment, timed heartbeat interaction and the like, and can complete communication of all networking units through timed verification, so that the difficulty of later maintenance is greatly reduced.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice in the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (10)
1. A radio frequency amplification device, comprising: the synchronous control unit is respectively connected with a first switch, a power amplification circuit, a second switch and a low-noise amplification circuit, and the first switch, the power amplification circuit, the second switch and the low-noise amplification circuit are mutually connected to form a closed loop;
the coupling circuit is used for receiving a downlink radio frequency signal of a signal source and sampling the downlink radio frequency signal;
the synchronous detection unit is used for acquiring a synchronous signal and a time slot ratio characteristic signal based on the extracted radio frequency signal;
a synchronization control unit for determining the positions of all time slots based on the synchronization signal and the time slot matching signal, and determining the positions of the time slots to be in a downlink time slot or an uplink time slot,
if the position of the time slot is in the downlink time slot, controlling the first switch to transmit a downlink signal to the power amplification circuit, and outputting the downlink signal to an antenna or a next-stage radio frequency amplification device through the second switch;
and if the position of the time slot is in the uplink time slot, controlling the second switch to transmit the radio-frequency signal of the antenna or the next-stage radio-frequency amplification device to the low-noise amplification circuit, amplifying the radio-frequency signal by the low-noise amplification circuit, transmitting the amplified radio-frequency signal to the coupling circuit through the first switch, and transmitting the amplified radio-frequency signal to the information source by the coupling circuit.
2. The radio frequency amplification device according to claim 1, wherein the synchronization control unit includes:
a detection subunit, configured to output a periodic pulse voltage signal based on the synchronization signal and the time slot proportioning signal, wherein a start time of the periodic pulse voltage signal depends on the synchronization signal, and a duty ratio depends on the time slot proportioning signal;
the voltage comparison subunit is used for determining the position of the falling edge of the downlink pilot time slot based on the periodic pulse voltage signal;
and the signal processing subunit is used for determining the positions of all the time slots based on the falling edge positions of the downlink pilot time slots, and determining that the positions of the time slots are in the downlink time slots or the uplink time slots according to preset uplink and downlink time slots by taking the falling edges of the downlink pilot time slots as starting points.
3. The radio frequency amplification device according to claim 1, wherein the first switch and the second switch are single-pole double-throw switches, a first leg of the first switch is connected to the coupling circuit, a first leg of the second switch is connected to the antenna or the next stage radio frequency amplification device, second legs of the first switch and the second switch are connected to the low noise amplification circuit, third legs of the first switch and the second switch are connected to the power amplification circuit, when the position of the timeslot is in the downlink timeslot, the first legs of the first switch and the second switch are both connected to the third leg, the low noise amplification circuit is turned off, and the power amplification circuit is turned on; when the position of the time slot is in the uplink time slot, the first legs of the first switch and the second switch are connected to the second leg, the low-noise amplifying circuit is turned on, and the power amplifying circuit is turned off.
4. The radio frequency amplification device of claim 1, further comprising: the power detection and control circuit is positioned between the first switch and the power amplification circuit and comprises a first attenuation circuit, a peak power detection circuit, a second attenuation circuit and a mean power detection circuit which are sequentially connected, the peak power detection circuit feeds back to the first attenuation circuit, and the mean power detection circuit feeds back to the first attenuation circuit.
5. The radio frequency amplification device of claim 1, further comprising: and the power supply processing and converting unit is connected with the information source and used for supplying power to the information source.
6. A method for power control of a radio frequency amplification device according to any one of claims 1 to 5, comprising:
receiving a downlink radio frequency signal of a signal source and sampling;
acquiring a synchronous signal and a time slot ratio characteristic signal based on the extracted radio frequency signal;
determining the positions of all time slots based on the synchronous signals and the time slot proportioning signals, and determining that the positions of the time slots are in a downlink time slot or an uplink time slot;
if the position of the time slot is in the downlink time slot, controlling the first switch to transmit the downlink signal to the power amplification circuit, and outputting the downlink signal to the antenna or the next-stage radio frequency amplification device through the second switch;
and if the position of the time slot is in the uplink time slot, controlling the second switch to transmit the radio-frequency signal of the antenna or the next-stage radio-frequency amplification device to the low-noise amplification circuit, amplifying the radio-frequency signal by the low-noise amplification circuit, transmitting the amplified radio-frequency signal to the coupling circuit through the first switch, and transmitting the amplified radio-frequency signal to the information source by the coupling circuit.
7. The method of claim 6, wherein the determining the positions of all slots based on the synchronization signal and the slot allocation signal comprises:
outputting a periodic pulse voltage signal based on the synchronization signal and the time slot proportioning signal;
determining a falling edge position of a downlink pilot time slot based on the periodic pulse voltage signal;
and determining the positions of all time slots based on the falling edge positions of the downlink pilot time slots, and determining that the positions of the time slots are in the downlink time slots or the uplink time slots according to preset uplink and downlink time slots by taking the falling edge of the downlink pilot time slot as a starting point.
8. The method of claim 6, wherein the radio frequency amplifying device further comprises a power detection and control circuit, which is located between the first switch and the power amplifying circuit, and the power detection and control circuit comprises a first attenuation circuit, a peak power detection circuit, a second attenuation circuit and a mean power detection circuit, which are connected in sequence;
the method further comprises the following steps:
before a radio-frequency signal enters the power amplification circuit, the radio-frequency signal is attenuated through a first attenuation circuit, and peak value detection is carried out after the radio-frequency signal is attenuated through the power detection circuit;
if the peak value of the radio frequency signal is larger than the set peak value, the peak value of the radio frequency signal is fed back to the first attenuation circuit to continuously attenuate the radio frequency signal until the peak value of the radio frequency signal is smaller than the set peak value;
the second attenuation circuit attenuates the radio-frequency signal, and performs mean value detection after the radio-frequency signal is attenuated through the mean value power detection circuit;
and if the mean value of the radio frequency signals is larger than the set mean value, feeding back to the second attenuation circuit to continuously attenuate the radio frequency signals until the mean value of the radio frequency signals is smaller than the set mean value.
9. A networking method for radio frequency amplification devices, which is applied to a plurality of radio frequency amplification devices as claimed in any one of claims 1 to 5, wherein each of the radio frequency amplification devices comprises a monitoring unit, and a plurality of adjacent radio frequency amplification devices are connected and communicated through an RS 485 interface, and the method comprises the following steps:
before networking is completed, the monitoring unit of each radio frequency amplification device broadcasts an external broadcast equipment address and an equipment ID, and the equipment addresses of all the radio frequency amplification devices are 0x1 by default;
after receiving broadcast to obtain the ID of a new device, comparing the ID of the new device with the ID of the current device, if the ID of the new device is higher than the received ID of the current device, adding 1 to the address of the current device, otherwise, keeping the ID of the current device unchanged;
recording the compared equipment IDs, monitoring and receiving that all the equipment IDs are recorded after a preset time T1, automatically switching the radio frequency amplification device with the equipment address of 0x1 to a master machine, and automatically switching the radio frequency amplification devices with other equipment addresses not being 0x1 to slave machines.
10. The method of claim 9, further comprising:
the master machine periodically sends interactive heartbeat to the slave machine, wherein the heartbeat period is T2;
and if the slave machine does not receive the heartbeat of the master machine within the time T2, the master machine is considered to be offline, the default addresses of the equipment addresses of all the radio frequency amplification devices are automatically changed to 0x1, and the identification of the master machine and the slave machine is repeatedly carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111006094.XA CN115940984A (en) | 2021-08-30 | 2021-08-30 | Radio frequency amplifying device and power control method and networking method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111006094.XA CN115940984A (en) | 2021-08-30 | 2021-08-30 | Radio frequency amplifying device and power control method and networking method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115940984A true CN115940984A (en) | 2023-04-07 |
Family
ID=86549393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111006094.XA Pending CN115940984A (en) | 2021-08-30 | 2021-08-30 | Radio frequency amplifying device and power control method and networking method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115940984A (en) |
-
2021
- 2021-08-30 CN CN202111006094.XA patent/CN115940984A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10498430B2 (en) | Expand dynamic of TDD signal detection and expand robustness against volatile signals | |
| US7787408B2 (en) | Wireless repeater with master/slave configuration | |
| EP2067269B1 (en) | Distributed antenna communications system and method of implementing thereof | |
| JP3290831B2 (en) | Antenna device and base station | |
| CN100444645C (en) | Method and device of wireless block data transmission | |
| CN111028495B (en) | Method and device for calibrating electric energy meter based on low-power-consumption Bluetooth communication | |
| US20160127065A1 (en) | Switching sub-system for distributed antenna systems using time division duplexing | |
| CN1988413B (en) | Synchronous method and device for time division duplex communication system | |
| US10333665B2 (en) | Method and system for wireless communication between terminals and half-duplex base stations | |
| CN111770505B (en) | Communication control unit, near-end connection module, far-end covering module and indoor distribution system | |
| CN115940984A (en) | Radio frequency amplifying device and power control method and networking method thereof | |
| CN212012644U (en) | Signal shielding system | |
| CN201118584Y (en) | A TD-SCDMA trunk amplifier | |
| US11323237B2 (en) | Repeater and synchronization method for the same | |
| CN105207731A (en) | Method for inserting DTMF control signaling and DTMF signal transmitting circuit for method | |
| CN201290119Y (en) | Synchronization control module of TD-SCDMA directly-discharging station | |
| CN102326435B (en) | Communication equipment and method, the gateway comprising this equipment, device and system | |
| CN205195712U (en) | DTMF signal reception circuit | |
| CN116095694A (en) | Device and method for supporting 5G near-far end wireless frequency shift | |
| CN113115334A (en) | 5g distributed community network coverage system | |
| CN101777325B (en) | Method for setting automatic synchronization, system and output device | |
| CN112616182A (en) | Base station synchronization method based on communication module | |
| KR101029979B1 (en) | Repeater and repeating method of wireless network | |
| KR20050032244A (en) | The method of gain setting of optical repeater using pilot signal | |
| CN107612580A (en) | Switch the method for electronic device works pattern |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |