CN111866900A - Frequency shift mobile communication indoor microdistribution system, method and application - Google Patents
Frequency shift mobile communication indoor microdistribution system, method and application Download PDFInfo
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- CN111866900A CN111866900A CN202010596553.3A CN202010596553A CN111866900A CN 111866900 A CN111866900 A CN 111866900A CN 202010596553 A CN202010596553 A CN 202010596553A CN 111866900 A CN111866900 A CN 111866900A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
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Abstract
The invention relates to the technical field of wireless mobile communication, in particular to a frequency shift mobile communication indoor microdistribution system, a method and application.A switch-in antenna is connected with a base station wireless signal, the switch-in frequency and the transmitting frequency of the switch-in antenna are both the same as the frequency of the base station and are used for receiving a base station downlink signal and transmitting a terminal uplink signal; the coverage forwarding antenna is connected with the coverage unit and the terminal wireless signal, and the access frequency and the transmitting frequency of the forwarding antenna are the same as those of the base station and are used for receiving the terminal uplink signal and transmitting the base station downlink signal.
Description
Technical Field
The invention relates to the technical field of wireless mobile communication, in particular to a frequency shift mobile communication indoor microdistribution system, a frequency shift mobile communication indoor microdistribution method and application.
Background
Nowadays, electronic mobile equipment is indispensable to everyone, and the popularization of online payment, the fragment time when the customer waits like businesses such as WeChat, short video, online live broadcast, and the like, the business handling (for example, the receiving and dispatching of identifying codes), the online handling of two-dimensional code business and the like cause people to have higher and higher requirements on wireless signal coverage, even have higher requirements on signal coverage in the elevator.
In the traditional indoor microdistribution system, input and output signals are same-frequency signals, and the requirement on equipment isolation is high, so that the gain and output power of the equipment cannot be too high, otherwise, the equipment is easy to self-activate, and base station interference is caused.
Disclosure of Invention
The invention aims to provide a frequency shift mobile communication indoor microdistribution system, a method and application, which solve the problems that the input and output signals of the traditional indoor microdistribution system are same-frequency signals, the requirement on the isolation degree of equipment is high, the gain and the output power of the equipment cannot be overlarge, the quantity of the equipment required to be installed is large, the installation cost is high, and the equipment installation difficulty is large.
In order to solve the above technical problems, the first technical solution adopted by the present invention is:
a frequency shifted mobile communication indoor microdistribution system comprising:
the access antenna is connected with a base station wireless signal, and the access frequency and the transmitting frequency of the access antenna are the same as the frequency of the base station and are used for receiving a downlink signal of the base station and transmitting an uplink signal of a terminal;
the access unit is connected with the access antenna signal and is used for filtering, amplifying and frequency shifting the signal;
the covering unit is in signal connection with the access unit and is used for filtering, amplifying and frequency shifting the signals; and
And the coverage forwarding antenna is connected with the coverage unit and the terminal wireless signals, and the access frequency and the transmitting frequency of the forwarding antenna are the same as those of the base station and are used for receiving the uplink signals of the terminal and transmitting the downlink signals of the base station.
The further technical scheme is that the system further comprises a forwarding antenna and a covering access antenna, the access unit is in signal connection with the forwarding antenna, the forwarding antenna is in signal connection with the covering access antenna, the covering access antenna is in signal connection with the covering unit, and both the access frequency and the transmitting frequency of the covering access antenna and the covering unit are the same as the frequency after frequency shifting.
According to a further technical scheme, the coverage access antenna, the coverage unit and the coverage forwarding antenna are all arranged in a plurality, the coverage access antenna is in signal connection with the forwarding antenna, and the coverage forwarding antenna is in signal connection with the terminal.
According to a further technical scheme, the access unit comprises an access downlink module, and the access downlink module comprises a first antenna interface a, a first duplexer a, a first low-noise amplifier, a first radio frequency transceiver chip a, a second radio frequency transceiver chip a, a first amplifier, a second duplexer a and a second antenna interface a which are sequentially connected through signals.
A further technical solution is that the access unit includes an access uplink module, and the access uplink module includes a second antenna interface b, a second duplexer b, a second low-noise amplifier, a second radio frequency transceiver chip b, a first radio frequency transceiver chip b, a second amplifier, a first duplexer b, and a first antenna interface b, which are connected in sequence by signals.
A further technical solution is that the covering unit includes a covering downlink module, and the covering downlink module includes a third antenna interface a, a third duplexer a, a third low-noise amplifier, a third rf transceiver chip a, a fourth rf transceiver chip a, a third amplifier, a fourth duplexer a and a fourth antenna interface a, which are connected in sequence.
A further technical solution is that the covering unit includes a covering downlink module, and the covering downlink module includes a third antenna interface a, a third duplexer a, a third low-noise amplifier, a third rf transceiver chip a, a fourth rf transceiver chip a, a third amplifier, a fourth duplexer a and a fourth antenna interface a, which are connected in sequence.
The second technical scheme adopted by the invention is as follows:
a frequency shift mobile communication indoor microdistribution method comprises the following steps that an access antenna is accessed to a base station in a wireless signal connection mode, the access antenna is accessed to an access unit in a wired signal connection mode, the access unit is accessed to a covering unit in a signal connection mode, the covering unit is accessed to a covering forwarding antenna in a wired signal connection mode, and the covering forwarding antenna is accessed to a terminal in a wireless signal connection mode.
The third technical scheme adopted by the invention is as follows:
the application of any frequency shift mobile communication indoor microdistribution system is applied to elevator car network coverage.
Compared with the prior art, the invention has at least one of the following beneficial effects:
1. the frequency shift function of the access unit and the frequency shift function of the covering unit are utilized to ensure that the receiving and sending of the access unit and the covering unit adopt different frequencies, so that the gain and the output power of the equipment can be increased, the requirement of the equipment on the isolation degree is reduced, the gain of the equipment is improved, the covering area of the equipment is improved, the number of the equipment is greatly reduced, and the installation difficulty is reduced;
2. the access antenna receives a base station signal and transmits the base station signal to the access unit, the access unit carries out filtering, amplification and frequency shift processing on the signal and then transmits the signal to the covering unit, the covering unit carries out filtering, amplification and frequency shift processing on the signal after receiving the signal and then transmits the signal to a terminal through the covering forwarding antenna, and therefore transmission of the signal in a downlink is achieved;
3. the coverage forwarding antenna receives a terminal signal, transmits the terminal signal to the coverage unit, transmits the terminal signal to the access unit after filtering, amplifying and frequency shifting processing are carried out on the signal by the coverage unit, and transmits the signal to the base station through the access antenna after filtering, amplifying and frequency shifting processing are carried out on the signal by the access unit, so that the transmission of the signal in an uplink is realized.
Drawings
Fig. 1 is a block diagram of an exemplary embodiment of an indoor microdistribution system for frequency shift mobile communication according to the present invention.
Fig. 2 is a block diagram of another embodiment of the frequency shift mobile communication indoor microdistribution system according to the present invention.
Fig. 3 is a block diagram of an access unit according to the present invention.
Fig. 4 is a block diagram of a covering unit according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1-4 illustrate embodiments of the frequency shifted mobile communication indoor microdistribution system, method and application of the present invention.
Example 1:
the embodiment provides a frequency shift mobile communication indoor microdistribution system, which comprises an access antenna, an access unit, a covering unit and a covering forwarding antenna, wherein the access antenna is connected with a base station through wireless signals, the access frequency and the transmitting frequency of the access antenna are the same as those of the base station and are used for receiving downlink signals of the base station and transmitting uplink signals of a terminal; the coverage forwarding antenna is connected with the coverage unit and the terminal wireless signal, and the access frequency and the transmitting frequency of the forwarding antenna are the same as those of the base station and are used for receiving the terminal uplink signal and transmitting the base station downlink signal.
Utilize the frequency shift function of access unit and covering unit, make the receiving and dispatching of access unit and covering unit all adopt different frequencies, consequently gain and the output of equipment all can increase to guarantee the input/output of equipment at different frequency channels, reduce the requirement of equipment to the isolation, promote equipment gain, promote the coverage area of equipment, thereby reduce equipment quantity by a wide margin, reduce the installation degree of difficulty.
The access antenna receives the base station signal and transmits the base station signal to the access unit, the access unit carries out filtering, amplification and frequency shift processing on the signal and then transmits the signal to the covering unit, the covering unit carries out filtering, amplification and frequency shift processing on the signal after receiving the signal and then transmits the signal to the terminal through the covering forwarding antenna, and then signal transmission in a downlink is achieved.
The coverage forwarding antenna receives a terminal signal, transmits the terminal signal to the coverage unit, transmits the terminal signal to the access unit after filtering, amplifying and frequency shifting processing are carried out on the signal by the coverage unit, and transmits the signal to the base station through the access antenna after filtering, amplifying and frequency shifting processing are carried out on the signal by the access unit, so that the transmission of the signal in an uplink is realized.
The access unit and the covering unit can transmit signals in a wired communication or wireless communication mode, namely, the access unit and the covering unit can realize signal transmission by cable butt joint, for example, when signal coverage is needed in places such as a parking lot and the like, the covering unit can cover by adopting a wired transmission mode, so that the loss between the access unit and the covering unit can be reduced, and large-area coverage can be better realized; the signal transmission can also be carried out in a wireless transmission mode, for example, when the signal of the elevator is covered, the wireless transmission is more beneficial to the realization of the coverage and the installation of the engineering.
When signal transmission is carried out between the access unit and the covering unit in a wireless communication mode, the access unit is connected with a transmitting antenna, the covering unit is connected with a covering access antenna, and wireless signal connection between the access unit and the covering unit is achieved through wireless signal transmission between the transmitting antenna and the covering access antenna.
The access frequency and the transmitting frequency of the access antenna and the covering forwarding antenna are consistent with the working frequency of the base station, so that the signals of the base station and the signals of the mobile phone terminal can be received and transmitted, and the access frequency and the transmitting frequency of the forwarding antenna and the covering access antenna are consistent with the frequency after frequency shift, so that the signal intercommunication between the access unit and the covering unit is ensured.
The coverage access antenna, the coverage unit and the coverage forwarding antenna can be arranged in a plurality of numbers, the coverage access antenna is in signal connection with the forwarding antenna, the coverage forwarding antenna is in signal connection with the terminal, the access antenna transmits signals into the access unit, the access unit performs signal processing, the signal processing comprises signal filtering, signal amplification, signal frequency shift and the like, useful signals of the base station are shifted to an intermediate frequency 1, the shifted signals are forwarded through the forwarding antenna, then the first coverage access antenna receives the shifted signals, the signal processing is performed through the first coverage unit, the signal processing comprises signal filtering, signal amplification, signal frequency shift and the like, the intermediate frequency 1 is restored to the frequency of the base station, and then the signals are transmitted to the terminal through the first coverage forwarding antenna; the other second coverage access antenna and the third coverage access antenna … …, the nth coverage access antenna all receive the signals subjected to the frequency shift by the access unit, then transmit the corresponding second coverage unit and the corresponding third coverage unit … …, the nth coverage unit, and the terminal receives the signals processed by the coverage unit through the second coverage forwarding antenna and the third coverage forwarding antenna … …, the nth coverage forwarding antenna. Similarly, the signal sent by the terminal is transmitted to the covering unit through the covering forwarding antenna, and is subjected to signal processing through the covering unit, wherein the signal processing comprises signal filtering, signal amplification, signal frequency shift and the like, the uplink useful signal of the mobile phone terminal is shifted to the intermediate frequency 2, then the signal after the frequency shift is forwarded through the covering access antenna, the forwarding antenna receives the signal after the frequency shift and transmits the signal to the receiving unit for signal processing, the signal processing comprises signal filtering, signal amplification, signal frequency shift and the like, the intermediate frequency 2 is restored to the uplink working frequency of the base station, and the restored signal is transmitted to the base station through the access antenna. By the method, the signal intercommunication between the terminal and the base station can be realized, so that the large-area coverage of indoor signals is realized.
The access unit comprises a first antenna interface (a first antenna interface a, a first antenna interface b), a first duplexer (a first duplexer a, a first duplexer b), a first low-noise amplifier (LNA), a first radio frequency transceiver chip (a first radio frequency transceiver chip a, a first radio frequency transceiver chip b), a second radio frequency transceiver chip (a second radio frequency transceiver chip a, a second radio frequency transceiver chip b), a first amplifier (PA), a second duplexer (a second duplexer a, a second duplexer b), a second antenna interface (a second antenna interface a, a second antenna interface b), a second low-noise amplifier (LNA) and a second amplifier (PA).
The first antenna interface a, the first duplexer a, the first radio frequency transceiver chip a, the second duplexer a, the second antenna interface a, the first low-noise amplifier and the first amplifier form an access downlink module of the access unit. In the access downlink module, a signal output end of a first antenna interface a is connected with a signal input end of a first duplexer a, a signal output end of the first duplexer a is connected with a signal input end of a first low-noise amplifier, a signal output end of the first low-noise amplifier is connected with a signal input end of a first radio frequency transceiver chip a, a signal output end of the first radio frequency transceiver chip a is connected with a signal input end of a second radio frequency transceiver chip a, a signal output end of the second radio frequency transceiver chip a is connected with a signal input end of a first amplifier, a signal output end of the first amplifier is connected with a signal input end of a second duplexer a, and a signal output end of the second duplexer a is connected with a signal input end of a second antenna interface a.
Through the signal connection mode, the first antenna interface a is connected with an access antenna, a downlink signal of a base station is received through the access antenna, the received signal is filtered through a first duplexer a to obtain a useful signal to be processed, a clutter signal is filtered, the useful signal is amplified through a first low-noise amplifier, the received analog signal is converted into a digital signal through a first radio frequency transceiver chip a, then the digital signal is amplified and filtered, the digital signal output by the first radio frequency transceiver chip a is subjected to digital-to-analog conversion through a second radio frequency transceiver chip a, the digital signal is converted into an analog signal and subjected to digital frequency shift processing, the useful signal is shifted to a frequency which is not on the same working frequency band with the downlink frequency of the base station, the analog signal is subjected to signal amplification through a first amplifier, and the amplified signal is filtered again through a second duplexer, and the signal after frequency shift is output to a forwarding antenna through a second antenna interface a, and is communicated with the covering unit, so that the downlink signal forwarding of the access unit is realized.
The first antenna interface b, the first duplexer b, the first radio frequency transceiver chip b, the second duplexer b, the second antenna interface b, the second low-noise amplifier and the second amplifier form an access uplink module of the access unit. In the accessed uplink module, the signal output end of the second antenna interface b is connected with the signal input end of the second duplexer b, the signal output end of the second duplexer b is connected with the signal input end of the second low-noise amplifier, the signal output end of the second low-noise amplifier is connected with the signal input end of the second radio frequency transceiver chip b, the signal output end of the second radio frequency transceiver chip b is connected with the signal input end of the first radio frequency transceiver chip b, the signal output end of the first radio frequency transceiver chip b is connected with the signal input end of the second amplifier, the signal output end of the second amplifier is connected with the signal input end of the first duplexer b, and the signal output end of the first duplexer b is connected with the signal input end of the first antenna interface b.
Through the signal connection mode, the second antenna interface b is connected with the forwarding antenna, the uplink signal of the covering unit is received through the forwarding antenna, the received signal is filtered through the second duplexer b to obtain a useful signal to be processed, a clutter signal is filtered, the useful signal is amplified through the second low-noise amplifier, the received analog signal is converted into a digital signal through the second radio frequency transceiver chip b, then the digital signal is amplified and filtered, the digital signal output by the second radio frequency transceiver chip b is subjected to digital-to-analog conversion through the first radio frequency transceiver chip b, the digital signal is converted into an analog signal, then digital frequency shift is carried out, the signal subjected to frequency shift of the covering unit is restored, the useful signal is restored to the uplink frequency of the base station, the analog signal is subjected to signal amplification through the second amplifier, and the amplified signal is filtered again through the first duplexer b, the recovered signal is output to an access antenna through a first antenna interface b, and the access antenna is communicated with a base station; thereby realizing the uplink signal forwarding of the access unit.
The first antenna interface a and the first antenna interface b may be the same first antenna interface, the second antenna interface a and the second antenna interface b may be the same second antenna interface, the first duplexer a and the first duplexer b may be the same first duplexer, the second duplexer a and the second duplexer b may be the same second duplexer, the first rf transceiver chip a and the first rf transceiver chip b may be the same first rf transceiver chip, and the second rf transceiver chip a and the second rf transceiver chip b may be the same second rf transceiver chip.
The covering unit comprises a third antenna interface (a third antenna interface a, a third antenna interface b), a third duplexer (a third duplexer a, a third duplexer b), a third Low Noise Amplifier (LNA), a third radio frequency transceiver chip (a third radio frequency transceiver chip, a third radio frequency transceiver chip b), a fourth radio frequency transceiver chip (a fourth radio frequency transceiver chip, a fourth radio frequency transceiver chip b), a third amplifier (PA), a fourth duplexer (a fourth duplexer a, a fourth duplexer b), a fourth antenna interface (a fourth antenna interface b), a fourth Low Noise Amplifier (LNA) and a fourth amplifier (PA).
The third antenna interface a, the third duplexer a, the third radio frequency transceiver chip a, the fourth duplexer a, the fourth antenna interface a, the third low-noise amplifier and the third amplifier form a covering downlink module of the covering unit. In the coverage downlink module, a signal output end of a third antenna interface a is connected with a signal input end of a third duplexer a, a signal output end of the third duplexer a is connected with a signal input end of a third low-noise amplifier, a signal output end of the third low-noise amplifier is connected with a signal input end of a third radio frequency transceiver chip a, a signal output end of the third radio frequency transceiver chip a is connected with a signal input end of a fourth radio frequency transceiver chip a, a signal output end of the fourth radio frequency transceiver chip a is connected with a signal input end of a third amplifier, a signal output end of the third amplifier is connected with a signal input end of a fourth duplexer a, and a signal output end of the fourth duplexer a is connected with a signal input end of a fourth antenna interface a.
Through the signal connection mode, the third antenna interface a is connected with the coverage access antenna, the downlink signal after frequency shift of the access unit is received through the coverage access antenna, the received signal is filtered through the third duplexer a to obtain a useful signal to be processed, a clutter signal is filtered, the useful signal is amplified through the third low-noise amplifier, the received analog signal is converted into a digital signal through the third radio frequency transceiver chip a, then the digital signal is amplified and filtered, the digital signal output by the third radio frequency transceiver chip a is subjected to digital-to-analog conversion through the fourth radio frequency transceiver chip a, the digital signal is converted into an analog signal and subjected to digital frequency shift processing, the useful signal is restored to the downlink frequency of the base station, the analog signal is subjected to signal amplification through the third amplifier, and the amplified signal is filtered again through the fourth duplexer a, and the recovered signal is output to the coverage forwarding antenna through the fourth antenna interface a to communicate with the terminal, so that the downlink signal forwarding of the coverage unit is realized.
The third antenna interface b, the third duplexer b, the third radio frequency transceiver chip b, the fourth duplexer b, the fourth antenna interface b, the fourth low-noise amplifier and the fourth amplifier form a covering uplink module of the covering unit. In the covering uplink module, the signal output end of the fourth antenna interface b is connected with the signal input end of the fourth duplexer b, the signal output end of the fourth duplexer b is connected with the signal input end of the fourth low-noise amplifier, the signal output end of the fourth low-noise amplifier is connected with the signal input end of the fourth radio frequency transceiver chip b, the signal output end of the fourth radio frequency transceiver chip b is connected with the signal input end of the third radio frequency transceiver chip b, the signal output end of the third radio frequency transceiver chip b is connected with the signal input end of the fourth amplifier, the signal output end of the fourth amplifier is connected with the signal input end of the third duplexer b, and the signal output end of the third duplexer b is connected with the signal input end of the third antenna interface b.
Through the signal connection mode, the fourth antenna interface b is connected with the coverage forwarding antenna, the uplink signal of the mobile phone terminal is received through the forwarding antenna, the received signal is filtered through the fourth duplexer b to obtain a useful signal to be processed, a clutter signal is filtered, the useful signal is amplified through the fourth low-noise amplifier, the received analog signal is converted into a digital signal through the fourth radio frequency transceiver chip b, then the digital signal is amplified and filtered, the digital signal output by the second radio frequency transceiver chip b is subjected to digital-to-analog conversion through the third radio frequency transceiver chip b, the digital signal is converted into an analog signal, then digital frequency shift is carried out, the uplink signal of the mobile phone is shifted to a frequency different from the uplink frequency of the base station, the analog signal is subjected to signal amplification through the fourth amplifier, and the amplified signal is filtered again through the third duplexer b, and the signal after frequency shift is output to the coverage access antenna through the third antenna interface b, and is communicated with the access unit, so that the uplink signal forwarding of the coverage unit is realized.
The third antenna interface a and the third antenna interface b may be the same third antenna interface, the fourth antenna interface a and the fourth antenna interface b may be the same fourth antenna interface, the third duplexer a and the third duplexer b may be the same third duplexer, the fourth duplexer a and the fourth duplexer b may be the same fourth duplexer, the third rf transceiver chip a and the third rf transceiver chip b may be the same third rf transceiver chip, and the fourth rf transceiver chip a and the fourth rf transceiver chip b may be the same fourth rf transceiver chip.
The first radio frequency transceiver chip, the second radio frequency transceiver chip, the third radio frequency transceiver chip and the fourth radio frequency transceiver chip are all current general radio frequency transceiver chips, such as 936X series of ADI, the series of chips have an AD/DA (analog-digital-analog conversion) function, a signal amplification function and a frequency shift function, communication among the radio frequency transceiver chips is realized through a standard SPI (serial peripheral interface), the radio frequency transceiver chips are configured through an MCU (micro control unit) and an SPI (serial peripheral interface), and the receiving frequency, the transmitting frequency (including the frequency after frequency shift), the bandwidth and the gain of the radio frequency transceiver chips are configured.
The frequency adopted by the communication between the receiving unit and the covering unit is a frequency resource which is not allocated currently, or a frequency which is not used in the actual environment is applied, so that the communication between the receiving unit and the covering unit does not influence the communication between other existing devices.
Example 2:
on the basis of the foregoing embodiment 1, this embodiment provides a frequency shift mobile communication indoor microdistribution method, including accessing an access antenna to a base station in a wireless signal connection manner, accessing the access antenna to an access unit in a wired signal connection manner, accessing the access unit to a coverage unit in a signal connection manner, accessing the coverage unit to a coverage forwarding antenna in a wired signal connection manner, and accessing the coverage forwarding antenna to a terminal in a wireless signal connection manner.
Utilize the frequency shift function of access unit and covering unit, make the receiving and dispatching of access unit and covering unit all adopt different frequencies, consequently gain and the output of equipment all can increase to guarantee the input/output of equipment at different frequency channels, reduce the requirement of equipment to the isolation, promote equipment gain, promote the coverage area of equipment, thereby reduce equipment quantity by a wide margin, reduce the installation degree of difficulty.
The access antenna receives the base station signal and transmits the base station signal to the access unit, the access unit carries out filtering, amplification and frequency shift processing on the signal and then transmits the signal to the covering unit, the covering unit carries out filtering, amplification and frequency shift processing on the signal after receiving the signal and then transmits the signal to the terminal through the covering forwarding antenna, and then signal transmission in a downlink is achieved.
The coverage forwarding antenna receives a terminal signal, transmits the terminal signal to the coverage unit, transmits the terminal signal to the access unit after filtering, amplifying and frequency shifting processing are carried out on the signal by the coverage unit, and transmits the signal to the base station through the access antenna after filtering, amplifying and frequency shifting processing are carried out on the signal by the access unit, so that the transmission of the signal in an uplink is realized.
Example 3:
on the basis of the foregoing embodiments 1 and 2, the present embodiment provides an application of a frequency-shift mobile communication indoor microdistribution system, which is applied to elevator car network coverage.
Characteristics of an elevator scene: the wireless service occurs frequently, the user demand is high, the environment is closed, the signal attenuation caused by the car structure is large, the probability of occurrence of weak signal areas and blind areas is large, and complaints are easy to occur.
Traditional elevator signal coverage schemes: the access unit accesses base station signals in a wireless mode, introduces a signal source to the covering unit in a wired mode, the covering unit introduces the signals to the elevator cars in a wireless mode, each covering unit can achieve 6-7 layers of signal coverage, and for the elevator cars with better shielding, each covering unit can achieve 1-2 layers of signal coverage. The number of the covering units needed by the traditional scheme is large, the cost is high, the installation and later-stage adjustment and optimization are difficult, signals in the elevator are unstable, the signals are strong when the covering units are close to the elevator, the signals are weak when the covering units are far away from the elevator, and if the covering units are unreasonable in covering, the situation that calls and networks are disconnected easily occurs.
The scheme can solve the defects, the receiving and the transmitting of the access unit and the covering unit adopt different frequencies, so that the equipment gain and the output power can be increased, the equipment quantity can be greatly reduced, the installation difficulty is reduced, only 1 access unit and 1 covering unit are needed for the elevator covering scheme, signals sent by the covering unit are stable, and the elevator covering scheme can be a preferred scheme for improving the elevator signal covering backwards.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (9)
1. A frequency-shifted mobile communication indoor microdistribution system, comprising:
the access antenna is connected with a base station wireless signal, and the access frequency and the transmitting frequency of the access antenna are the same as the frequency of the base station and are used for receiving a downlink signal of the base station and transmitting an uplink signal of a terminal;
the access unit is connected with the access antenna signal and is used for filtering, amplifying and frequency shifting the signal;
the covering unit is in signal connection with the access unit and is used for filtering, amplifying and frequency shifting the signals; and
and the coverage forwarding antenna is connected with the coverage unit and the terminal wireless signals, and the access frequency and the transmitting frequency of the forwarding antenna are the same as those of the base station and are used for receiving the uplink signals of the terminal and transmitting the downlink signals of the base station.
2. The frequency-shifted mobile communication indoor microdistribution system of claim 1, wherein: the access unit is in signal connection with the forwarding antenna, the forwarding antenna is in signal connection with the coverage access antenna, the coverage access antenna is in signal connection with the coverage unit, and both the access frequency and the transmitting frequency of the coverage access antenna and the coverage unit are the same as the frequency after frequency shift.
3. The frequency-shifted mobile communication indoor microdistribution system of claim 2, wherein: the coverage access antenna, the coverage unit and the coverage forwarding antenna are all arranged in a plurality of numbers, the coverage access antenna is in signal connection with the forwarding antenna, and the coverage forwarding antenna is in signal connection with the terminal.
4. The frequency-shifted mobile communication indoor microdistribution system according to any one of claims 1-3, wherein: the access unit comprises an access downlink module, and the access downlink module comprises a first antenna interface a, a first duplexer a, a first low-noise amplifier, a first radio frequency transceiver chip a, a second radio frequency transceiver chip a, a first amplifier, a second duplexer a and a second antenna interface a which are sequentially connected through signals.
5. The frequency-shifted mobile communication indoor microdistribution system according to any one of claims 1-3, wherein: the access unit comprises an access uplink module, and the access uplink module comprises a second antenna interface b, a second duplexer b, a second low-noise amplifier, a second radio frequency transceiver chip b, a first radio frequency transceiver chip b, a second amplifier, a first duplexer b and a first antenna interface b which are sequentially connected through signals.
6. The frequency-shifted mobile communication indoor microdistribution system according to any one of claims 1-3, wherein: the covering unit comprises a covering downlink module, and the covering downlink module comprises a third antenna interface a, a third duplexer a, a third low-noise amplifier, a third radio frequency transceiver chip a, a fourth radio frequency transceiver chip a, a third amplifier, a fourth duplexer a and a fourth antenna interface a which are sequentially connected through signals.
7. The frequency-shifted mobile communication indoor microdistribution system according to any one of claims 1-3, wherein: the covering unit comprises a covering uplink module, and the covering uplink module comprises a fourth antenna interface b, a fourth duplexer b, a fourth low-noise amplifier, a fourth radio frequency transceiver chip b, a third radio frequency transceiver chip b, a fourth low-noise amplifier, a third duplexer b and a third antenna interface b.
8. A frequency shift mobile communication indoor microdistribution method is characterized in that: the frequency shift mobile communication indoor microdistribution system of any one of claims 1-7, wherein the access antenna is connected to the base station in a wireless signal connection mode, the access antenna is connected to the access unit in a wired signal connection mode, the access unit is connected to the coverage unit in a signal connection mode, the coverage unit is connected to the coverage forwarding antenna in a wired signal connection mode, and the coverage forwarding antenna is connected to the terminal in a wireless signal connection mode.
9. Use of the frequency-shifting mobile communication indoor microdistribution system according to any one of claims 1-7, characterized in that: the system is applied to the network coverage of the elevator car.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010596553.3A CN111866900A (en) | 2020-06-28 | 2020-06-28 | Frequency shift mobile communication indoor microdistribution system, method and application |
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| CN2694631Y (en) * | 2003-12-31 | 2005-04-20 | 京信通信系统（广州）有限公司 | Mobile communication frequency shifting wireless repeat one-to-more signal distribution system |
| CN1635717A (en) * | 2003-12-31 | 2005-07-06 | 京信通信系统（广州）有限公司 | Frequency shift wireless forwarding point-to-multipoint signal distribution system for mobile communication |
| CN2819658Y (en) * | 2005-06-09 | 2006-09-20 | 沈阳奥维通信技术有限公司 | Mobile telecommunication frequency-shift direct broadcast station |
| CN102271344A (en) * | 2011-04-07 | 2011-12-07 | 陕西浩瀚新宇科技发展有限公司 | Method for enhancing transmission distance for frequency shift repeater in time division duplex relay transmission mode |
| CN109547087A (en) * | 2018-12-06 | 2019-03-29 | 广州东峰通信科技有限公司 | A kind of wireless frequency-shift repeater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2694631Y (en) * | 2003-12-31 | 2005-04-20 | 京信通信系统（广州）有限公司 | Mobile communication frequency shifting wireless repeat one-to-more signal distribution system |
| CN1635717A (en) * | 2003-12-31 | 2005-07-06 | 京信通信系统（广州）有限公司 | Frequency shift wireless forwarding point-to-multipoint signal distribution system for mobile communication |
| CN2819658Y (en) * | 2005-06-09 | 2006-09-20 | 沈阳奥维通信技术有限公司 | Mobile telecommunication frequency-shift direct broadcast station |
| CN102271344A (en) * | 2011-04-07 | 2011-12-07 | 陕西浩瀚新宇科技发展有限公司 | Method for enhancing transmission distance for frequency shift repeater in time division duplex relay transmission mode |
| CN109547087A (en) * | 2018-12-06 | 2019-03-29 | 广州东峰通信科技有限公司 | A kind of wireless frequency-shift repeater |
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