CN111770505B - Communication control unit, near-end connection module, far-end covering module and indoor distribution system - Google Patents
Communication control unit, near-end connection module, far-end covering module and indoor distribution system Download PDFInfo
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- CN111770505B CN111770505B CN202010652996.XA CN202010652996A CN111770505B CN 111770505 B CN111770505 B CN 111770505B CN 202010652996 A CN202010652996 A CN 202010652996A CN 111770505 B CN111770505 B CN 111770505B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The embodiment of the application provides a communication control unit, near-end connection module, far-end cover module and indoor branch system, wherein be applied to near-end connection module's communication control unit and include: the first 4G signal receiving and processing assembly, the first 4G radio frequency transceiver, the first baseband chip and the first indoor sub-communication transceiving channel; the first 4G signal receiving and processing assembly is connected with the first 4G radio frequency transceiver, receives and processes 4G signals from the 4G information source and then transmits the 4G signals to the first 4G radio frequency transceiver; the first baseband chip is connected with the first 4G radio frequency transceiver and controls the first 4G radio frequency transceiver to receive or transmit the 4G room division communication signals through the first room division communication transceiving channel; the first indoor-part communication transceiving passage comprises an indoor-part communication signal receiving passage for receiving indoor-part communication signals and an indoor-part communication signal transmitting passage for transmitting the indoor-part communication signals. The embodiment of the application can realize the indoor distribution communication control of the near-end connecting module and the far-end covering module, and has higher integration level.
Description
Technical Field
The embodiment of the application relates to the technical field of communication, in particular to a communication control unit, a near-end connecting module, a far-end covering module and an indoor distribution system.
Background
In indoor environments such as large buildings, underground shopping malls, underground parking lots and the like, mobile communication signals are weak, blind areas and shadow areas of mobile communication are easily formed, and terminals such as mobile phones and the like using the mobile communication signals cannot be normally used. The indoor distribution system (also called indoor distribution system) can be used for improving mobile communication signals of indoor environment, and base station signals can be uniformly distributed at every indoor corner by using the indoor distribution system, so that ideal signal coverage is ensured under the indoor environment.
The indoor distribution system mainly comprises a near-end connecting module close to the base station information source side and a far-end covering module close to the terminal user side, wherein one near-end connecting module supports and is connected with a plurality of far-end covering modules; the indoor communication of the indoor distribution system is mainly completed by the near-end connection module and the far-end covering module, so how to realize the indoor communication control of the near-end connection module and the far-end covering module becomes a technical problem which needs to be solved urgently in the technical field.
Disclosure of Invention
In view of this, embodiments of the present disclosure provide a communication control unit, a near-end connection module, a far-end covering module, and an indoor distribution system, so as to implement indoor distribution communication control of the near-end connection module and the far-end covering module.
In order to achieve the above purpose, the embodiments of the present application provide the following technical solutions:
a communication control unit for a near-end connection module, the communication control unit comprising: the first 4G signal receiving and processing assembly, the first 4G radio frequency transceiver, the first baseband chip and the first indoor sub-communication transceiving channel;
the first 4G signal receiving and processing component is connected with the first 4G radio frequency transceiver and is used for receiving and processing 4G signals from a 4G information source and transmitting the processed 4G signals to the first 4G radio frequency transceiver;
the first baseband chip is connected with the first 4G radio frequency transceiver and is used for controlling the first 4G radio frequency transceiver to receive or transmit 4G room division communication signals through the first room division communication transceiving channel; the first indoor-part communication transceiving passage comprises an indoor-part communication signal receiving passage for receiving the indoor-part communication signal and an indoor-part communication signal transmitting passage for transmitting the indoor-part communication signal.
Optionally, the first baseband chip is further configured to demodulate the 4G signal to obtain a frequency synchronization signal and a time synchronization signal of the indoor distribution system.
Optionally, the first baseband chip specifically demodulates the 4G signal in subframe 0 of the 4G signal, and generates a communication control signal with a fixed frequency in non-subframe 0 of the 4G signal, so as to control the first 4G radio frequency transceiver to receive or transmit the 4G indoor communication signal through the first indoor communication transceiving path at the fixed frequency.
Optionally, the first 4G signal receiving and processing component includes: the first 4G signal receiving channel, a first power divider and a plurality of first filters;
the first 4G signal receiving path is used for receiving a 4G signal from a 4G source;
the first power divider is configured to divide the 4G signal received by the first 4G signal receiving path to obtain multiple paths of 4G signals;
and the first filter is used for filtering one path of 4G signals output by the first power divider and transmitting the filtered 4G signals to the first 4G radio frequency transceiver.
Optionally, the first indoor distribution communication transceiving path further includes a first switch; when the first switch is connected with a room communication signal transmitting path, the communication control unit transmits a room communication signal, and when the first switch is connected with a room communication signal receiving path, the communication control unit receives the room communication signal.
Optionally, the communication control unit further includes: and the second filter is connected with the first switch and is used for filtering the indoor communication signals transmitted or received by the first indoor communication transceiving channel.
Optionally, the communication control unit further includes: and the 5G radio frequency transceiving signal path is used for providing a 5G signal for the first baseband chip.
Optionally, the first baseband chip is further configured to: demodulating the 5G signal, and measuring to obtain frame header time difference information and time slot ratio information of the 5G signal and the 4G signal; and the frame header time difference information and the time slot ratio information are broadcasted to the remote coverage module through the room-level digital communication signal.
An embodiment of the present application further provides a near-end connection module, including: a first coupler, a second coupler, a plurality of 5G signal paths, a first combiner, and a communication control unit as described in any one of the above;
the first coupler is connected with a 4G signal source and the communication control unit and is used for providing a 4G signal of the 4G signal source for the communication control unit;
the plurality of 5G signal paths are connected with a 5G signal source and the first combiner, and the second coupler is connected between one 5G signal path and the 5G signal source and is used for providing a 5G signal of the 5G signal source for the communication control unit;
the communication control unit is connected with the first combiner and provides a room division communication signal for the first combiner;
the first coupler is also connected with the first combiner; the first combiner is in communication connection with the far-end covering module.
Optionally, the first coupler is specifically connected to a first 4G signal receiving path of the communication control unit, and transmits a 4G signal of a 4G signal source to the first 4G signal receiving path.
Optionally, the second coupler is specifically connected to a 5G radio frequency transceiving signal path of the communication control unit, and provides a 5G signal for the 5G radio frequency transceiving signal path.
Optionally, the first baseband chip in the communication control unit outputs the calibrated clock signal as the reference clock signal of the plurality of 5G signal paths.
Optionally, the communication control unit integrates a frequency-time synchronization function, a power control function of the near-end connection module, a power control function of the indoor distribution system, and an indoor distribution system monitoring function.
The embodiment of the present application further provides a communication control unit, which is applied to a remote coverage module, and the communication control unit includes: the second 4G signal receiving and processing assembly, the second 4G radio frequency transceiver and the second room branch communication transceiving passage;
the second 4G signal receiving and processing component is connected with the second 4G radio frequency transceiver, receives and processes 4G signals from the 4G coverage antenna and transmits the processed 4G signals to the second 4G radio frequency transceiver;
the second 4G radio frequency transceiver is used for receiving or transmitting 4G room division communication signals through the second room division communication transceiving channel; the second room communication transceiving passage comprises a room communication signal receiving passage for receiving the room communication signal and a room communication signal transmitting passage for transmitting the room communication signal.
Optionally, the second 4G signal receiving and processing component includes: the second 4G signal receiving channel, the second power divider and the plurality of third filters;
wherein the second 4G signal receiving path is used for receiving 4G signals from a 4G coverage antenna;
the second power divider is configured to divide the 4G signal received by the second 4G signal receiving path to obtain multiple paths of 4G signals;
and the third filter is used for filtering one path of 4G signals output by the second power divider and transmitting the filtered 4G signals to the second 4G radio frequency transceiver.
Optionally, the second indoor branch communication transceiving path further includes a second switch; when the second switch is switched on the room communication signal transmitting path, the communication control unit transmits a room communication signal, and when the second switch is switched on the room communication signal receiving path, the communication control unit receives a room communication signal.
Optionally, the communication control unit further includes: and the fourth filter is connected with the second switch and is used for filtering the indoor communication signals transmitted or received by the second indoor communication transceiving channel.
An embodiment of the present application further provides a remote coverage module, including: a third coupler, a plurality of 5G signal paths, a second combiner, such as the communication control unit of any of the above;
the third coupler is connected with the 4G coverage antenna and the communication control unit and is used for providing 4G signals received by the 4G coverage antenna for the communication control unit;
the 5G signal paths are connected with the 5G coverage signal antenna and the second combiner;
the third coupler is also connected with the second combiner, and the communication control unit is also connected with the second combiner and used for providing a room division communication signal for the second combiner; and the second combiner is in communication connection with the near-end connecting module.
Optionally, the third coupler is specifically connected to a second 4G signal receiving path of the communication control unit, and transmits the 4G signal received by the 4G coverage antenna to the second 4G signal receiving path.
Optionally, the communication control unit is configured to demodulate the 4G signal, and a second 4G radio frequency transceiver of the communication control unit receives and transmits a fixed-frequency indoor-division communication signal through a second indoor-division communication receiving and transmitting path, so that the far-end coverage module and the near-end connection module are registered in the same cell.
Optionally, the communication control unit is configured to receive frame header time difference information and timeslot matching information of the 5G signal and the 4G signal transmitted by the near-end connection module, recover the 5G synchronization control signal in the far-end overlay module, and provide the recovered 5G synchronization control signal to the 5G signal path.
Optionally, the communication control unit integrates a frequency-time synchronization function, a power control function of the near-end connection module, a power control function of the indoor distribution system, and an indoor distribution system monitoring function.
The embodiment of the present application further provides an indoor distribution system, including: a proximal connection module as in any above, and a plurality of distal covering modules as in any above.
In the communication control unit applied to the near-end connection module provided in the embodiment of the application, when the first 4G signal receiving and processing component receives and processes the 4G signal of the 4G signal source and then transmits the 4G signal to the first 4G radio frequency transceiver, the first baseband chip can control the first 4G radio frequency transceiver to receive or transmit 4G room-division communication signals through the first room-division communication transceiving channel, since the first room communication transceiving path includes a receiving path for receiving the room communication signal, and a transmitting path for transmitting the room communication signal, the first 4G radio frequency transceiver in the embodiment of the present application may be under the control of the first baseband chip, the room division communication receiving and transmitting control of the near-end connecting module is realized through the first room division communication receiving and transmitting passage with the room division communication signal receiving passage and the transmitting passage, and the room division communication control purpose of the near-end connecting module is achieved.
In addition, in the communication control unit applied to the remote coverage module according to the embodiment of the present application, when the second 4G signal receiving and processing component receives and processes the 4G signal of the 4G coverage antenna and transmits the processed 4G signal to the second 4G radio frequency transceiver, the second 4G radio frequency transceiver may receive or transmit the 4G room-division communication signal through the second room-division communication transceiving path, and the second room-division communication transceiving path includes a receiving path for receiving the room-division communication signal and a transmitting path for transmitting the room-division communication signal, so that in the embodiment of the present application, the second 4G radio frequency transceiver may implement receiving and transmitting control of the room-division communication signal of the remote coverage module through the second room-division communication transceiving path having the receiving path and the transmitting path of the room-division communication signal, and achieve the room-division communication control purpose of the remote coverage module.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic illustration of a room-division system;
FIG. 2 is an exemplary diagram of a room division system;
fig. 3 is a schematic diagram of a communication control unit according to an embodiment of the present application;
fig. 4 is another schematic diagram of a communication control unit according to an embodiment of the present application;
fig. 5 is a further schematic diagram of a communication control unit according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a proximal connection module provided in an embodiment of the present application;
fig. 7 is a further schematic diagram of a communication control unit according to an embodiment of the present application;
fig. 8 is yet another schematic diagram of a communication control unit according to an embodiment of the present application;
fig. 9 is a schematic diagram of a remote-end covering module according to an embodiment of the present application.
Detailed Description
In an example, the principle example of the indoor subsystem can be shown in fig. 1, where pa (power Amplifier) in fig. 1 is a power Amplifier, LNA (Low Noise Amplifier) is a Low Noise Amplifier, pmu (power Management unit) is a power Management unit, and as can be seen from fig. 1: the outdoor radio frequency part receives outdoor base station signals and sends the signals to a baseband chip, the baseband chip is synchronous and resides in a proper cell, then the indoor radio frequency part is opened, and the base station signals are amplified and sent to the indoor; the link for transmitting the outdoor base station signal to the indoor through amplification in the example of fig. 1 may be referred to as a downlink amplification link, and the link for transmitting the indoor signal to the outdoor through amplification may be referred to as an uplink amplification link, where when the uplink amplification link transmits the amplified signal to the outdoor, the signal also enters the baseband chip, and the baseband chip performs processing such as frequency tracking and power control according to the received signal.
In further description, as shown in fig. 2, the indoor distribution system mainly includes a near-end connection module 01 and a plurality of far-end coverage modules 02, where the near-end connection module (also called a master node) connects to a base station signal and sends the base station signal to the far-end coverage module (also called a slave node), and the far-end coverage module processes the received base station signal and sends the processed base station signal to an air interface through a radio frequency power distribution feeder system (such as a passive radio frequency power distribution feeder system), so as to complete coverage of the base station signal in an indoor environment.
As further shown in fig. 2, a communication control unit 1 (also referred to as a near-end communication control unit) is disposed in the near-end connection module and is configured to implement the indoor distribution communication control function of the near-end connection module, and a communication control unit 2 (also referred to as a far-end communication control unit) is disposed in the far-end coverage module and is configured to implement the indoor distribution communication control function of the far-end coverage module; specifically, the communication control unit of the near-end connection module can realize the control of receiving and transmitting the room division communication signal of the near-end connection module, and the communication control unit of the far-end covering module can realize the control of receiving and transmitting the room division communication signal of the far-end covering module.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
On one hand, the following describes a communication control unit of a near-end connection module provided in this embodiment, and in an alternative implementation, fig. 3 shows a schematic diagram of the communication control unit provided in this embodiment, where the communication control unit is applicable to the near-end connection module, and as shown in fig. 3, the communication control unit 1 of the near-end connection module may include: the first 4G signal receiving and processing assembly 11, the first 4G radio frequency transceiver 12, the first baseband chip 13, the first indoor division communication transceiver 14.
The first 4G signal receiving and processing component 11 is connected to the first 4G radio frequency transceiver 12, and is configured to receive and process a 4G signal from a 4G signal source, and transmit the processed 4G signal to the first 4G radio frequency transceiver 12;
the first baseband chip 13 is connected to the first 4G rf transceiver 12, and is configured to control the first 4G rf transceiver 12 to receive or transmit the 4G indoor communication signal through the first indoor communication transceiving path 14; the first room communication transceiver path 14 includes a room communication signal receiving path for receiving the room communication signal, and a room communication signal transmitting path for transmitting the room communication signal.
In an alternative implementation, the first baseband chip 13 may be a 4G and 5G standard baseband chip.
The communication control unit provided by the embodiment of the application can be applied to the near-end connection module, and under the condition that the first 4G signal receiving and processing component receives and processes the 4G signal of the 4G signal source and then transmits the 4G signal to the first 4G radio frequency transceiver, the first baseband chip can control the first 4G radio frequency transceiver to receive or transmit the 4G room division communication signal through the first room division communication transceiving path, and because the first room division communication transceiving path comprises the room division communication signal receiving path for receiving the room division communication signal and the room division communication signal transmitting path for transmitting the room division communication signal, in the embodiment of the application, the first 4G radio frequency transceiver can realize the receiving and transmitting control of the room division communication signal of the near-end connection module through the first room division communication transceiving path having the room division communication signal receiving path and the transmitting path under the control of the first baseband chip, the purpose of indoor communication control of the near-end connection module is achieved.
In a further optional implementation, the first baseband chip 13 may further be configured to demodulate the 4G signal to obtain a frequency synchronization signal and a time synchronization signal of the indoor subsystem, that is, the first baseband chip may further demodulate the 4G signal to achieve frequency and time synchronization of the indoor subsystem; in an optional implementation, the first baseband chip may demodulate the 4G signal in subframe 0 of the 4G signal, obtain a frequency synchronization signal and a time synchronization signal of the indoor subsystem, and generate a communication control signal with a fixed frequency in non-subframe 0 of the 4G signal, so as to control the first 4G radio frequency transceiver to receive or transmit the 4G indoor communication signal through the first indoor communication transceiving path at the fixed frequency.
Specifically, in an example, as shown in table 1, after synchronizing to the 4G network, the communication control unit of the near-end connection module determines the synchronization message (i.e., the frequency synchronization signal and the time synchronization signal) at the subframe 0 at a timing, and switches to the fixed frequency at the remaining subframes to implement the indoor sub-communication, i.e., controls the first 4G radio frequency transceiver to receive or transmit the 4G indoor sub-communication signal through the first indoor sub-communication transceiving path at the fixed frequency.
TABLE 1
In a further alternative implementation, fig. 4 shows another schematic diagram of the communication control unit provided in the embodiment of the present application, and in combination with fig. 3 and fig. 4, the communication control unit shown in fig. 4 details the structure of the first 4G signal receiving and processing component and the first room-to-room communication transceiving path; specifically, as shown in fig. 3 and 4:
the first 4G signal reception processing component 11 may include: a first 4G signal reception path 111, a first power divider 112, a plurality of first filters 113;
the first 4G signal receiving path 111 is configured to receive a 4G signal from a 4G source;
the first power divider 112 is configured to divide the 4G signal received by the first 4G signal receiving path 111 to obtain multiple paths of 4G signals; it should be noted that, for convenience of illustration, fig. 4 illustrates a case where the first power divider branches the 4G signal into two 4G signals, but in practical application, the first power divider may branch the 4G signal into more than two 4G signals, and optionally, the first power divider may select two power dividers when the 4G signal is branched into two 4G signals;
under the condition that the first power divider outputs two paths of 4G signals, one first filter 113 is configured to perform filtering processing on one path of 4G signals output by the first power divider, and transmit the filtered 4G signals to the first 4G radio frequency transceiver 12; it should be noted that the number of the first filters 113 may be consistent with the number of paths of the 4G signals output by the first power divider, that is, one first filter 113 is used to filter one path of the 4G signals output by the first power divider 112, and transmit the filtered path of the 4G signals to the first 4G rf transceiver 12.
With continued reference to fig. 4, the first room communication transceiving path may include a room communication signal transmitting path 141, a room communication signal receiving path 142, and a first switch 143; the first switch 143 switches on the room-division communication signal transmitting path or the room-division communication signal receiving path, when the first switch 143 switches on the room-division communication signal transmitting path, the communication control unit 1 of the near-end connection module may transmit the room-division communication signal, and when the first switch 143 switches on the room-division communication signal receiving path, the communication control unit 1 of the near-end connection module may receive the room-division communication signal.
Further, as shown in fig. 4, the first switch 143 may be further connected to the second filter 15, for performing filtering processing on the indoor communication signal transmitted or received by the first indoor communication transceiving path.
In this embodiment of the application, the first power divider may divide the 4G signal of the 4G signal source received by the near-end connection module, and the divided 4G signal of each path may be transmitted to the first 4G rf transceiver through the corresponding first filter, so that the first 4G rf transceiver transmits the room division communication signal of 4G under the control of the first baseband chip when the first switch is connected to the room division communication signal transmission path, and the first 4G rf transceiver receives the room division communication signal of 4G under the control of the first baseband chip when the first switch is connected to the room division communication signal reception path, thereby implementing the receiving and transmitting control of the room division communication signal of the near-end connection module, and achieving the room division communication control purpose of the near-end connection module. Furthermore, the room division communication signals transmitted or received by the first room division communication transceiving channel can be filtered by the second filter, so that the room division communication control of the near-end connection module can be more accurately realized.
In an alternative implementation, fig. 5 shows a further schematic diagram of the communication control unit provided in the embodiment of the present application, and in combination with fig. 4 and fig. 5, the communication control unit of the near-end connection module may further include: the 5G rf transceiving signal path 16, the 5G rf transceiving signal path 16 may provide a 5G signal for the first baseband chip 13; thus, the first baseband chip 13 of 4G and 5G standards provided in the embodiment of the present application can also be used for: and demodulating the 5G signal, and measuring to obtain information such as frame header time difference information, time slot ratio and the like of the 5G signal and the 4G signal, wherein the information such as the frame header time difference information, the time slot ratio and the like can be broadcasted to a far-end covering module through a room-level digital communication signal.
It should be noted that the frequency and time synchronization, system communication, and system power control of the indoor distribution system are important indexes for the indoor distribution system to meet visual operation and maintenance and reduce interference to the network, and in order to meet the above indexes, the communication control unit of the near-end connection module needs to implement multiple communication control functions of the near-end connection module, and the communication control unit of the far-end coverage module needs to implement multiple communication control functions of the far-end coverage module.
For example, a communication control unit of the near-end connection module needs to realize various communication control functions such as reference clock output, 4G signal synchronization, 5G synchronization control, frame header time difference detection of 4G and 5G signals, indoor subsystem monitoring and the like; for another example, the communication control unit in the remote coverage module needs to implement communication control functions such as reference clock output, 5G synchronous control recovery, and indoor subsystem monitoring;
based on this, for the near-end connection module, the embodiment of the present application may integrate the functions of frequency time synchronization of the near-end connection module, power control of the indoor subsystem, monitoring of the indoor subsystem, and the like into one module on the basis that the communication control unit of the near-end connection module sets a dedicated indoor subsystem communication transceiving channel for indoor subsystem communication control, so that the communication control unit of the near-end connection module may output a calibrated clock signal as a reference clock of the 5G signal channel and output signals such as a time frequency synchronization control signal, power detection and control, and signal light indication, so as to implement multiple kinds of communication control of the near-end connection module.
In an alternative implementation, fig. 6 shows a schematic diagram of a near-end connection module provided in an embodiment of the present application, and as shown in fig. 6, the near-end connection module may include:
a first coupler 011, a communication control unit 1, a second coupler 012, a plurality of 5G signal paths 013, and a first combiner 014; the structure of the communication control unit 1 can refer to the description of the corresponding parts above, and is not redundant here.
In an optional implementation, the first coupler 011 is connected with a 4G signal source and the communication control unit 1, and is used for providing the communication control unit 1 with a 4G signal of the 4G signal source; specifically, the first coupler may be connected to a first 4G signal receiving path 111 of the communication control unit, and transmit a 4G signal of a 4G signal source to the first 4G signal receiving path 111; optionally, the 4G source may be, for example, a Remote Radio Unit (RRU) of a 4G signal, and further, the RRU of the 4G signal may be compatible with a 2G signal and a 3G signal, that is, the RRU may be a 2G/3G/4G RRU;
a plurality of 5G signal paths 013 are connected to the 5G signal source and the first combiner 014, and the second coupler 012 is connected between one 5G signal path and the 5G signal source, and is configured to provide the 5G signal of the 5G signal source to the communication control unit 1; specifically, the second coupler 012 may be connected to a 5G radio frequency transceiving signal path 16 of the communication control unit 1, and provide a 5G signal to the 5G radio frequency transceiving signal path 16; optionally, the 5G source may be an RRU of a 5G signal; further, the first baseband chip 13 in the communication control unit 1 of the near-end connection module may output a calibrated clock signal as a reference clock signal of the plurality of 5G signal paths; the communication control unit 1 is also connected to the first combiner 014, and provides the room division communication signal to the first combiner 014.
Further, as shown in fig. 6, the first coupler 011 can be further connected to a first combiner 014; the first combiner 014 may be communicatively connected with the remote coverage module.
In the near-end connection module provided by the embodiment of the application, the near-end connection module can integrate multiple functions such as frequency time synchronization, power control of the near-end connection module, power control of an indoor distribution system, monitoring of the indoor distribution system and the like besides realizing indoor distribution communication control based on the first indoor distribution communication transceiving channel arranged by the communication control unit, so that the near-end connection module with high integration level is provided, and the requirements of visual operation and maintenance of the indoor distribution system and network interference reduction are met.
On the other hand, the following describes a communication control unit of a remote coverage module provided in this embodiment, and in an alternative implementation, fig. 7 shows another schematic diagram of the communication control unit provided in this embodiment, where the communication control unit is applicable to the remote coverage module, and as shown in fig. 7, the communication control unit of the remote coverage module may include: a second 4G signal receiving and processing module 21, a second 4G radio frequency transceiver 22, and a second indoor sub-communication transceiving path 23.
The second 4G signal receiving and processing component 21 is connected to the second 4G rf transceiver 22, and receives and processes the 4G signal from the 4G coverage antenna and transmits the processed 4G signal to the second 4G rf transceiver 22; optionally, the 4G coverage antenna may receive a 4G signal transmitted by the near-end connection module to the far-end coverage module;
the second 4G radio frequency transceiver 22 is configured to receive or transmit the 4G room-division communication signal through the second room-division communication transceiving path 23; the second room communication transceiver path 23 includes a room communication signal receiving path for receiving the room communication signal, and a room communication signal transmitting path for transmitting the room communication signal.
The communication control unit provided in this embodiment of the application may be applied to a far-end coverage module, and when the second 4G signal receiving and processing component receives and processes a 4G signal of a 4G coverage antenna and transmits the 4G signal to the second 4G radio frequency transceiver, the second 4G radio frequency transceiver may receive or transmit a 4G room-division communication signal through the second room-division communication transceiving path, and because the second room-division communication transceiving path includes a receiving path that receives the room-division communication signal and a transmitting path that transmits the room-division communication signal, in this embodiment of the application, the second 4G radio frequency transceiver may implement receiving and transmitting control of the room-division communication signal of the far-end coverage module through the second room-division communication transceiving path that has the receiving path and the transmitting path of the room-division communication signal, thereby achieving the room-division communication control purpose of the far-end coverage module.
It should be noted that, because the communication control unit of the near-end connection module generates the communication control signal with the fixed frequency in the non-sub-frame 0 of the 4G signal to control the first 4G radio frequency transceiver to receive or transmit the room-division communication signal of the 4G through the first room-division communication transceiving path at the fixed frequency, in the far-end coverage module, the second 4G radio frequency transceiver can receive and transmit the room-division communication signal with the fixed frequency through the second room-division communication transceiving path, so as to ensure that the far-end coverage module and the near-end connection module are registered in the same cell.
In a further alternative implementation, fig. 8 shows yet another schematic diagram of the communication control unit provided in the embodiment of the present application, and in combination with fig. 7 and 8, the communication control unit 2 shown in fig. 8 refines the structure of the second 4G signal receiving and processing component and the second room-to-room communication transceiving path; specifically, as shown in fig. 7 and 8:
the second 4G signal reception processing component 21 may include: a second 4G signal receiving path 211, a second power divider 212, and a plurality of third filters 213.
Wherein the second 4G signal reception path 211 is used to receive 4G signals from the 4G coverage antenna.
The second power divider 212 is configured to divide the 4G signal received by the second 4G signal receiving path 211 to obtain multiple paths of 4G signals; it should be noted that, for convenience of illustration, fig. 8 illustrates a case where the second power divider splits the 4G signal into two 4G signals, but in practical application, the second power divider may split the 4G signal into more than two 4G signals, and optionally, the second power divider may select two power dividers when the 4G signal is split into two 4G signals.
Under the condition that the second power divider outputs two paths of 4G signals, a third filter 213 is configured to perform filtering processing on one path of 4G signals output by the second power divider 212, and transmit the filtered 4G signals to the second 4G radio-frequency transceiver 22; it should be noted that the number of the third filters 213 may be consistent with the number of paths of the 4G signals output by the second power divider 212, that is, one third filter 213 is used to filter one path of the 4G signals output by the second power divider 212 and transmit the filtered signal to the second 4G radio frequency transceiver;
with continued reference to fig. 8, the second room communication transceiving path 23 may include a room communication signal transmitting path 231, a room communication signal receiving path 232, and a second switch 233; when the second switch 233 is turned on the room division communication signal transmission path 231, the communication control unit 2 of the remote coverage module may transmit the room division communication signal, and when the second switch 233 is turned on the room division communication signal reception path 232, the communication control unit 2 of the remote coverage module may receive the room division communication signal.
Further, as shown in fig. 8, the second switch 233 may be further connected to the fourth filter 24, and configured to perform filtering processing on the indoor communication signal transmitted or received by the second indoor communication transceiving path.
In this embodiment of the application, the second power divider may divide the 4G signal of the 4G coverage antenna received by the remote coverage module, and the divided 4G signal of each path may be transmitted to the second 4G rf transceiver through the corresponding third filter, so that the second 4G rf transceiver may transmit the 4G indoor branch communication signal when the second switch is connected to the indoor branch communication signal transmission path, and the second 4G rf transceiver receives the 4G indoor branch communication signal when the second switch is connected to the indoor branch communication signal reception path, thereby implementing the reception and transmission control of the indoor branch communication signal of the remote coverage module, and achieving the indoor branch communication control purpose of the remote coverage module. Furthermore, the room division communication signals transmitted or received by the second room division communication transceiving channel can be filtered by the fourth filter, so that the room division communication control of the far-end covering module can be more accurately realized.
In a further alternative implementation, fig. 9 shows a schematic diagram of a far-end covering module provided in an embodiment of the present application, and as shown in fig. 9, the far-end covering module may include:
a third coupler 021, a communication control unit 2, a plurality of 5G signal paths 023, and a second combiner 024; the structure of the communication control unit 2 can refer to the description of the corresponding parts above, and is not redundant here.
In an optional implementation, the third coupler 021 is connected to the 4G coverage antenna and the communication control unit 2, and is configured to provide the communication control unit 2 with a 4G signal received by the 4G coverage antenna; specifically, the third coupler 021 may be connected to the second 4G signal receiving path 211 of the communication control unit 2, and transmit the 4G signal received by the 4G coverage antenna to the second 4G signal receiving path 211; optionally, the 4G coverage antenna may further be compatible with 2G signals and 3G signals, that is, the coverage antenna may be a 2G/3G/4G coverage antenna;
the plurality of 5G signal paths 023 are connected with the 5G coverage signal antenna and the second combiner 024; the 5G coverage signal antenna is, for example, a 5G MIMO (Multiple-In Multiple-Out) coverage signal antenna.
Optionally, the third coupler 021 is further connected to a second combiner 024, and the communication control unit 2 is further connected to the second combiner 024, and is configured to provide the room division communication signal to the second combiner; and the second combiner 024 is in communication connection with the near-end connection module.
In this embodiment of the application, the far-end coverage module may couple the 4G signal through the third coupler, so that the communication control unit of the far-end coverage module may demodulate the 4G signal, and the second 4G radio frequency transceiver may receive and transmit the indoor distribution communication signal with a fixed frequency through the second indoor distribution communication transceiving path, thereby ensuring that the far-end coverage module and the near-end connection module are registered in the same cell;
meanwhile, a communication control unit in the far-end covering module can use a frame header of a 4G signal as a reference to realize the time synchronization of the far-end covering module;
furthermore, by receiving frame header time difference information and time slot matching information of the 5G signal and the 4G signal of the near-end connection module, the 5G synchronous control signal can be recovered at the far-end covering module and provided for a 5G signal path;
furthermore, a communication control unit of the far-end covering module can output signals such as a reference clock signal, a power detection and control signal and an LED indicator lamp control signal, and besides the indoor-branch communication control is realized through a second indoor-branch communication transceiving channel arranged on the basis of the communication control unit, the functions of frequency time synchronization, power control of a near-end connecting module, power control of an indoor-branch system, monitoring of the indoor-branch system and the like can be integrated, the high-integration far-end covering module is provided, and the requirements of visual operation and maintenance of the indoor-branch system and network interference reduction are met.
The embodiment of the application also provides an indoor distribution system, which comprises the near-end connecting module and a plurality of far-end covering modules.
The indoor distribution communication control method and the indoor distribution communication control system can achieve indoor distribution communication control of the near-end connecting module and the far-end covering module, are high in integration level, can integrate functions of frequency time synchronization, equipment power control, indoor distribution system monitoring and the like, and meet visual operation and maintenance requirements of the indoor distribution system; meanwhile, the far-end covering module can realize the output of the synchronous signal under the condition that the synchronous module is not needed, and the hardware cost of the equipment is reduced.
Although the embodiments of the present application are disclosed above, the present application is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present disclosure, and it is intended that the scope of the present disclosure be defined by the appended claims.
Claims (23)
1. A communication control unit, for use with a near-end connection module, the communication control unit comprising: the first 4G signal receiving and processing assembly, the first 4G radio frequency transceiver, the first baseband chip and the first indoor sub-communication transceiving channel;
the first 4G signal receiving and processing component is connected to the first 4G radio frequency transceiver, and is configured to receive a 4G signal from a 4G signal source, process the received 4G signal, and transmit the signal after processing the 4G signal to the first 4G radio frequency transceiver;
the first baseband chip is connected with the first 4G radio frequency transceiver and is used for controlling the first 4G radio frequency transceiver to receive or transmit 4G room division communication signals through the first room division communication transceiving channel; the first indoor-part communication transceiving passage comprises an indoor-part communication signal receiving passage for receiving the indoor-part communication signal and an indoor-part communication signal transmitting passage for transmitting the indoor-part communication signal.
2. The communication control unit of claim 1, wherein the first baseband chip is further configured to demodulate the 4G signal to obtain a frequency synchronization signal and a time synchronization signal of the indoor subsystem.
3. The communication control unit according to claim 2, wherein the first baseband chip demodulates the 4G signal specifically in sub-frame 0 of the 4G signal, and generates a communication control signal of a fixed frequency in non-sub-frame 0 of the 4G signal to control the first 4G radio frequency transceiver to receive or transmit a 4G room-division communication signal through the first room-division communication transceiving path at the fixed frequency.
4. The communication control unit of claim 1, wherein the first 4G signal reception processing component comprises: the first 4G signal receiving channel, a first power divider and a plurality of first filters;
the first 4G signal receiving path is used for receiving a 4G signal from a 4G source;
the first power divider is configured to divide the 4G signal received by the first 4G signal receiving path to obtain multiple paths of 4G signals;
and the first filter is used for filtering one path of 4G signals output by the first power divider and transmitting the filtered 4G signals to the first 4G radio frequency transceiver.
5. The communication control unit of claim 1, wherein the first room communication transceiving path further comprises a first switch; when the first switch is connected with a room communication signal transmitting path, the communication control unit transmits a room communication signal, and when the first switch is connected with a room communication signal receiving path, the communication control unit receives the room communication signal.
6. The communication control unit according to claim 5, characterized by further comprising: and the second filter is connected with the first switch and is used for filtering the indoor communication signals transmitted or received by the first indoor communication transceiving channel.
7. The communication control unit according to claim 1, characterized by further comprising: and the 5G radio frequency transceiving signal path is used for providing a 5G signal for the first baseband chip.
8. The communication control unit of claim 7, wherein the first baseband chip is further configured to: demodulating the 5G signal, and measuring to obtain frame header time difference information and time slot ratio information of the 5G signal and the 4G signal; and the frame header time difference information and the time slot ratio information are broadcasted to the remote coverage module through the room-level digital communication signal.
9. A proximal connection module, comprising: a first coupler, a second coupler, a plurality of 5G signal paths, a first combiner, the communication control unit of any of claims 1-8;
one end of the first coupler is connected with a 4G signal source, and the other end of the first coupler is connected with the communication control unit; the first coupler is used for providing 4G signals of a 4G source for the communication control unit;
one end of the 5G signal path is connected with a 5G signal source, and the other end of the 5G signal path is connected with the first combiner; the second coupler is connected between a 5G signal path and a 5G signal source and used for providing a 5G signal of the 5G signal source for the communication control unit;
the communication control unit is connected with the first combiner and provides a room division communication signal for the first combiner;
the first coupler is also connected with the first combiner; the first combiner is in communication connection with the far-end covering module.
10. The near-end connection module of claim 9, wherein the first coupler is specifically connected to a first 4G signal reception path of the communication control unit, and transmits 4G signals of a 4G source to the first 4G signal reception path.
11. The near-end connection module of claim 9, wherein the second coupler is specifically connected to a 5G radio frequency transceiving signal path of the communication control unit, providing a 5G signal for the 5G radio frequency transceiving signal path.
12. The near-end connection module of claim 9, wherein the first baseband chip in the communication control unit outputs the calibrated clock signal as the reference clock signal of the plurality of 5G signal paths.
13. The module of claim 9, wherein the communication control unit integrates a frequency-time synchronization function, a power control function of the module, a power control function of the indoor subsystem, and a monitoring function of the indoor subsystem.
14. A communication control unit, for use in a remote coverage module, the communication control unit comprising: the second 4G signal receiving and processing assembly, the second 4G radio frequency transceiver and the second room branch communication transceiving passage;
the second 4G signal receiving and processing component is connected to the second 4G radio frequency transceiver, receives a 4G signal from a 4G coverage antenna, processes the received 4G signal, and transmits the signal after processing the 4G signal to the second 4G radio frequency transceiver;
the second 4G radio frequency transceiver is used for receiving or transmitting 4G room division communication signals through the second room division communication transceiving channel; the second room communication transceiving passage comprises a room communication signal receiving passage for receiving the room communication signal and a room communication signal transmitting passage for transmitting the room communication signal.
15. The communication control unit of claim 14, wherein the second 4G signal reception processing component comprises: the second 4G signal receiving channel, the second power divider and the plurality of third filters;
wherein the second 4G signal receiving path is used for receiving 4G signals from a 4G coverage antenna;
the second power divider is configured to divide the 4G signal received by the second 4G signal receiving path to obtain multiple paths of 4G signals;
and the third filter is used for filtering one path of 4G signals output by the second power divider and transmitting the filtered 4G signals to the second 4G radio frequency transceiver.
16. The communication control unit of claim 14, wherein the second room communication transceiving path further comprises a second switch; when the second switch is switched on the room communication signal transmitting path, the communication control unit transmits a room communication signal, and when the second switch is switched on the room communication signal receiving path, the communication control unit receives a room communication signal.
17. The communication control unit according to claim 16, characterized by further comprising: and the fourth filter is connected with the second switch and is used for filtering the indoor communication signals transmitted or received by the second indoor communication transceiving channel.
18. A remote cover module, comprising: a third coupler, a plurality of 5G signal paths, a second combiner, the communication control unit of any of claims 14-17;
one end of the third coupler is connected with the 4G coverage antenna, and the other end of the third coupler is connected with the communication control unit; the third coupler is used for providing 4G signals received by a 4G coverage antenna for the communication control unit;
one end of the 5G signal path is connected with a 5G coverage signal antenna, and the other end of the 5G signal path is connected with the second combiner;
the third coupler is also connected with the second combiner, and the communication control unit is also connected with the second combiner and used for providing a room division communication signal for the second combiner; and the second combiner is in communication connection with the near-end connecting module.
19. The remote-coverage module of claim 18, wherein the third coupler is specifically connected to a second 4G signal reception path of the communication control unit, and transmits a 4G signal received by a 4G-coverage antenna to the second 4G signal reception path.
20. The remote coverage module of claim 18, wherein the communication control unit is configured to demodulate the 4G signal, and a second 4G rf transceiver of the communication control unit transceives a fixed-frequency indoor communication signal through a second indoor communication transceiving path, so that the remote coverage module and the near-end connection module are registered in the same cell.
21. The remote overlay module according to claim 18, wherein the communication control unit is configured to receive frame header time difference information and timeslot matching message of the 5G signal and the 4G signal transmitted by the near-end connection module, recover the 5G synchronization control signal at the remote overlay module, and provide the recovered 5G synchronization control signal to the 5G signal path.
22. The remote overlay module of claim 18 wherein the communication control unit integrates frequency-time synchronization, power control of the near-end connection module, power control of the indoor subsystem, and monitoring of the indoor subsystem.
23. An indoor subsystem, comprising: a proximal connection module according to any of claims 9-13, and a plurality of distal cover modules according to any of claims 18-22.
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| CN112533282B (en) * | 2020-10-22 | 2021-08-06 | 中国电信股份有限公司 | Frequency synchronization method and system, near-end machine, far-end machine and storage medium |
| CN113206682B (en) * | 2021-04-29 | 2022-09-16 | 展讯通信（上海）有限公司 | Near-end combining unit, far-end combining unit and indoor distribution system |
| CN115833868B (en) * | 2023-02-14 | 2023-05-12 | 深圳国人无线通信有限公司 | Radio frequency remote module and system |
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