CN111866899A - Indoor microdistribution system and method for 5G mobile communication - Google Patents
Indoor microdistribution system and method for 5G mobile communication Download PDFInfo
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Abstract
The invention relates to the technical field of wireless mobile communication, in particular to a 5G mobile communication indoor microdistribution system and a method, wherein the system comprises a receiving antenna, a forwarding antenna and a signal processing unit, the receiving antenna is connected with a 5G base station wireless signal, the access frequency and the transmitting frequency of the receiving antenna are both the same as those of the 5G base station and are used for receiving a 5G base station downlink signal and transmitting a terminal uplink signal, the forwarding antenna is connected with the terminal wireless signal, the access frequency and the transmitting frequency of the forwarding antenna are both the same as those of the 5G base station and are used for receiving the terminal uplink signal and transmitting the 5G base station downlink signal, and the signal processing unit is used for connecting the receiving antenna and the forwarding antenna through signals and processing the signals. The problem of low coverage of the current 5G signal is solved.
Description
Technical Field
The invention relates to the technical field of wireless mobile communication, in particular to a 5G mobile communication indoor microdistribution system and a method.
Background
The 5G era is an intelligent era of full mobility and full connectivity, people-to-people, people-to-objects, and objects-to-objects need to be connected and communicated, 5G scenes and service requirements are diversified, 4G bears mobile internet, people can locate 5G not only through an eMBB network which can provide better experience and more services for users, but also through a network which is connected with the industry, 5G is not only a simple communication network but also can be used as an underlying network to go deep into various industries of society, and typical services in the 5G era provide higher requirements for the network from the aspects of high speed, high flexibility, multiple connectivity, low time delay, high reliability, network development and the like.
Statistics shows that more than 70% of services in the current 4G mobile network occur in indoor scenes, and the indoor mobile network is more important along with the continuous increase of 5G service types and the continuous expansion of industry boundaries, and is one of the core competitiveness in the 5G era.
The construction of a service-driven network, which has the most important characteristics of a 5G network, is larger bandwidth, lower time delay and more connections, and the coverage of 5G signals needs to be improved at present, so a 5G mobile communication indoor microdistribution system and a method are needed to improve the coverage of 5G signals of a current operator.
The 5G indoor coverage has the following difficulties to be overcome: the 5G power consumption is greatly increased compared with that of 4G, in the 5G era, one station of multiple frequencies is typical configuration, the station occupation ratio above 5 frequencies is sharply increased, one station of multiple frequencies causes the maximum power consumption of the whole station to exceed 10kW, the power consumption of the station above 10 frequencies and 10 frequencies exceeds 20kW, under the sharing scene of multiple operators, the power consumption is doubled, in order to meet the service requirement of network capacity increase, a large number of peripheral stations are deployed, the number of network stations is greatly increased, the power consumption of the whole network is multiplied, meanwhile, the networking mode in the current 5G indoor distribution is single, and flexible networking cannot be realized according to the actual coverage scene.
Disclosure of Invention
The invention aims to provide a 5G mobile communication indoor microdistribution system and a method, which solve the problem of low coverage of the current 5G signal.
In order to solve the above technical problems, the first technical solution adopted by the present invention is:
a 5G mobile communication indoor microdistribution system comprising:
the receiving antenna is connected with a wireless signal of the 5G base station, the access frequency and the transmitting frequency of the receiving antenna are the same as the frequency of the 5G base station, and the receiving antenna is used for receiving a downlink signal of the 5G base station and transmitting an uplink signal of the terminal;
the forwarding antenna is connected with a terminal wireless signal, the access frequency and the transmitting frequency of the forwarding antenna are the same as the frequency of the 5G base station, and the forwarding antenna is used for receiving an uplink signal of the terminal and transmitting a downlink signal of the 5G base station; and
and the signal processing unit is used for connecting the signal with the receiving antenna and the forwarding antenna and processing the signal.
The further technical scheme is that the signal processing unit comprises a base station synchronization module used for balancing uplink and downlink and providing uplink and downlink time slots of the base station so as to synchronize the uplink and the downlink.
According to a further technical scheme, the base station synchronization module comprises a 5G baseband synchronization module, an MCU and a third antenna used for receiving downlink signals of the 5G base station, the third antenna is in signal connection with the 5G baseband synchronization module, the 5G baseband synchronization module is in signal connection with the MCU, and the MCU is in signal connection with a first radio frequency switch and a second radio frequency switch on an uplink and a downlink.
According to a further technical solution, the signal processing unit further includes a downlink module for transmitting signals from the receiving antenna to the repeating antenna, and an uplink module for transmitting signals from the repeating antenna to the receiving antenna.
A further technical scheme is that the downlink module comprises a first antenna interface a, a first filter a, a first low-noise amplifier, a first radio frequency switch, a first radio frequency transceiver chip a, a second radio frequency transceiver chip a, a first amplifier, a second filter a and a second antenna interface a which are connected in sequence through signals, wherein the first antenna interface a is used for being connected with an access antenna, the second antenna interface a is used for being connected with a forwarding antenna, and the first radio frequency transceiver chip a and the second radio frequency transceiver chip a are in signal connection with an MCU in a signal processing unit and used for detecting the received signal strength of the first radio frequency transceiver chip a and the second radio frequency transceiver chip a through the MCU.
In a further technical solution, the first radio frequency transceiver chip a and the second radio frequency transceiver chip a are both radio frequency transceiver chips having analog-to-digital-to-analog conversion functions.
A further technical scheme is that the uplink module comprises a second antenna interface b, a second filter b, a second low-noise amplifier, a second radio frequency switch, a second radio frequency transceiver chip b, a first radio frequency transceiver chip b, a second amplifier, a first filter b and a first antenna interface b which are connected in sequence through signals, the second antenna interface b is used for being connected with a forwarding antenna, the first antenna interface b is used for being connected with an access antenna, and the first radio frequency transceiver chip b and the second radio frequency transceiver chip b are in signal connection with an MCU in a signal processing unit and used for detecting the received signal strength of the first radio frequency transceiver chip b and the second radio frequency transceiver chip b through the MCU.
The second technical scheme adopted by the invention is as follows:
A5G mobile communication indoor microdistribution method, comprising: the access antenna is accessed to the 5G signal base station in a wireless signal connection mode, the access antenna is accessed to the signal processing unit in a wired signal connection mode, the signal processing unit is accessed to the forwarding antenna in a wired signal connection mode, and the forwarding antenna is accessed to the terminal in a wireless signal connection mode.
A further technical solution is that the networking mode of the device among the access antenna, the signal processing unit and the forwarding antenna includes: independent use, parallel networking and series networking.
Compared with the prior art, the invention has at least one of the following beneficial effects:
1. indoor microdistribution of 5G mobile communication is carried out through the system, so that the coverage of 5G signals is improved;
2. extracting the time slot configuration of the 5G base station by adopting a 5G baseband synchronization module, and controlling the on-off of an uplink radio frequency switch and a downlink radio frequency switch by utilizing an MCU (microprogrammed control unit) according to the time slot configuration of the 5G base station to realize the synchronization function of equipment;
3. the MCU is used for detecting the received signal strength of the radio frequency transceiver chip and controlling the gain of the radio frequency transceiver chip so as to control the gains of an uplink and a downlink, thereby ensuring that an uplink and a downlink power amplifiers are in a linear working area, ensuring that the output signal of equipment is stable and avoiding the problem of network quality fluctuation caused by signal source signal fluctuation;
4. The networking mode can adopt different networking modes according to actual application scenes to realize indoor signal coverage of 5G mobile communication with diversified requirements;
5. the power consumption of the whole set of system is not over 10W, and is saved by more than 90% compared with the power consumption of a 5G small base station.
Drawings
Fig. 1 is a block diagram of a 5G mobile communication indoor microdistribution system according to the present invention.
Fig. 2 is a block diagram of a signal processing unit according to the present invention.
Fig. 3 is a block diagram illustrating a structure of an independent use of a networking mode in the present invention.
Fig. 4 is a structural block diagram of a parallel networking mode in the present invention.
Fig. 5 is a block diagram of a serial networking mode 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. 1-5 illustrate embodiments of 5G mobile communication indoor microdistribution systems and methods of the present invention.
Example 1:
the embodiment provides a 5G mobile communication indoor microdistribution system, which comprises a receiving antenna, a forwarding antenna and a signal processing unit, wherein the receiving antenna is connected with a 5G base station through wireless signals, the access frequency and the transmitting frequency of the receiving antenna are both the same as those of the 5G base station and are used for receiving downlink signals of the 5G base station and transmitting uplink signals of a terminal, the forwarding antenna is connected with the wireless signals of the terminal, the access frequency and the transmitting frequency of the forwarding antenna are both the same as those of the 5G base station and are used for receiving uplink signals of the terminal and transmitting downlink signals of the 5G base station, and the signal processing unit is used for connecting the receiving antenna with the forwarding antenna through signals and processing the signals.
The receiving antenna and the 5G base station and the forwarding antenna and the terminal are connected through wireless signals, and the receiving antenna and the signal processing unit and the forwarding antenna are connected through wired signals.
The access antenna accesses base station signals in a wireless mode, transmits the signals to the signal processing unit in a wired mode, and the signal processing unit processes the signals, wherein the signal processing comprises signal filtering, signal amplification and the like, and the signals are forwarded through the forwarding antenna, so that 5G wireless signal coverage is realized.
The signal processing unit comprises a base station synchronization module for balancing uplink and downlink and providing base station uplink and downlink time slots for uplink and downlink synchronization, a downlink module for transmitting signals from the receiving antenna to the forwarding antenna, and an uplink module for transmitting signals from the forwarding antenna to the receiving antenna.
Specifically, the signal processing unit is provided with a first antenna interface (a first antenna interface ), a first filter (a first filter a, a first filter b), a first low-noise amplifier (LNA), a first radio frequency switch, 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 b), a first amplifier (PA), a second filter (a second filter a, a second filter b), a second antenna interface (a second antenna interface b), a second low-noise amplifier (LNA), a second radio frequency switch, a second amplifier (PA), a third antenna, a 5G baseband synchronization module, an MCU, and the like. The two radio frequency transceiver chips comprise a first radio frequency transceiver chip and a second radio frequency transceiver chip which are in signal connection with each other.
The base station synchronization module comprises a 5G baseband synchronization module, an MCU and a third antenna for receiving downlink signals of a 5G base station, wherein the third antenna is in signal connection with the 5G baseband synchronization module, the 5G baseband synchronization module is in signal connection with the MCU, and the MCU is in signal connection with a first radio frequency transceiver chip (a, b), a second radio frequency transceiver chip (a, b), a first radio frequency switch and a second radio frequency switch on an uplink and a downlink.
In the system, a downlink signal of the 5G base station is received through a third antenna, then a time slot ratio of the 5G base station is obtained through a 5G baseband synchronization module, time slot ratio data is transmitted to an MCU (microprogrammed control Unit), the MCU controls the on-off of a first radio frequency switch and a second radio frequency switch through the uplink and downlink time slot ratio, and in consideration of the fact that the actual air interface distance between the synchronization module and the 5G base station is uncertain, for the problem that the first radio frequency switch and the second radio frequency switch are simultaneously opened to cause uplink and downlink crosstalk, the following processing is required when the first radio frequency switch and the second radio frequency switch are controlled to be switched: when the first radio frequency switch is closed, the second radio frequency switch is opened after delaying for a certain time; and when the second radio frequency switch is closed, the first radio frequency switch is opened after delaying for a certain time.
The first antenna interface a, the first filter a, the first radio frequency transceiver chip a, the second filter a, the second antenna interface a, the first low noise amplifier, the first radio frequency switch and the first amplifier form the downlink module. In the downlink module, the signal output end of a first antenna interface a is in signal connection with the signal input end of a first filter a, the signal output end of the first filter a is in signal connection with the signal input end of a first low-noise amplifier, the signal output end of the first low-noise amplifier is in signal connection with the signal input end of a first radio frequency switch, the signal output end of the first radio frequency switch is in signal connection with the signal input end of a first radio frequency transceiver chip a, the signal output end of the first radio frequency transceiver chip a is in signal connection with the signal input end of a second radio frequency transceiver chip a, the signal output end of the second radio frequency transceiver chip a is in signal connection with the signal input end of a first amplifier, the signal output end of the first amplifier is in signal connection with the signal input end of a second filter a, and the signal output end of the second filter a is in signal connection with the signal input end.
The first antenna interface a is connected with an access antenna, receives a 5G base station downlink signal through the access antenna, filters the received signal through a first filter a to obtain a useful signal to be processed, filters a clutter signal, amplifies the useful signal through a first low-noise amplifier, converts the received analog signal into a digital signal through a first radio frequency transceiver chip a, then amplifies and filters the digital signal, the signal between the first radio frequency transceiver chip a and a second radio frequency transceiver chip a is transmitted in the form of a digital signal, the digital signal passes through the second radio frequency transceiver chip a to amplify and filter the digital signal, the digital signal is converted into an analog signal after the processing, the analog signal is amplified through a first amplifier, and the amplified signal is filtered again through a second filter a, and outputting the signals to a forwarding antenna through a second antenna interface a, and finally realizing the forwarding of the downlink signals of the 5G base station.
The first antenna interface b, the first filter b, the first radio frequency transceiver chip b, the second filter b, the second antenna interface b, the second low noise amplifier, the second radio frequency switch and the second amplifier form the uplink module. In the uplink module, the signal output end of the second antenna interface b is in signal connection with the signal input end of the second filter b, the signal output end of the second filter b is in signal connection with the signal input end of the second low-noise amplifier, the signal output end of the second low-noise amplifier is in signal connection with the signal input end of the second radio frequency switch, the signal output end of the second radio frequency switch is in signal connection 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 in signal connection 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 in signal connection with the signal input end of the second amplifier, the signal output end of the second amplifier is in signal connection with the signal input end of the first filter b, and the signal output end of the first filter b is in signal connection with the signal input end of.
The second antenna interface b is connected with the forwarding antenna, receives the uplink signal of the terminal through the forwarding antenna, filters the received signal through a second filter b to obtain a useful signal to be processed, filters a clutter signal, amplifies the useful signal through a second low-noise amplifier, converts the received analog signal into a digital signal through a second radio frequency transceiver chip b, then amplifies and filters the digital signal, the signal between the second radio frequency transceiver chip b and the first radio frequency transceiver chip b is transmitted in the form of the digital signal, the digital signal passes through the first radio frequency transceiver chip b to amplify and filter the digital signal, the digital signal is subjected to digital-analog conversion after the processing is finished, the digital signal is converted into the analog signal, the analog signal is subjected to signal amplification through a second amplifier, and the amplified signal is filtered again through the first filter b, and outputting the signal to a receiving antenna through a first antenna interface b, and finally realizing the uplink signal forwarding of the terminal.
The first antenna interface a and the first antenna interface b may adopt the same first antenna interface, the second antenna interface a and the second antenna interface b may adopt the same second antenna interface, the first filter a and the first filter b may adopt the same first filter, the second filter a and the second filter b may adopt the same second filter, the first radio frequency transceiver chip a and the first radio frequency transceiver chip b may adopt the same first radio frequency transceiver chip, and the second radio frequency transceiver chip a and the second radio frequency transceiver chip b may adopt the same second radio frequency transceiver chip.
The first radio frequency transceiver chip and the second radio frequency transceiver chip are both radio frequency transceiver chips with analog-digital conversion functions, such as 936X series of ADI, the series of chips have AD/DA (analog-digital, digital-analog conversion) functions and signal amplification functions, and communication between the radio frequency transceiver chips realizes transmission of digital signals through a standard SPI interface; the configuration of the radio frequency transceiver chip is that the receiving frequency and the transmitting frequency (including the frequency after frequency shift), the bandwidth and the gain of the radio frequency transceiver chip are configured through the MCU and the SPI.
The gain control mode is as follows: firstly, the initial uplink and downlink gains of the device are configured to be consistent, the uplink gain is configured to be G1, the downlink gain is configured to be G2, after the device is synchronized with the base station, the MCU detects the input signal strength Pin of the first radio frequency transceiver chip, and the signal output downlink output power is Pout = Rx + G1:
if Pout is larger than the designed maximum power Pmax of the downlink equipment, the MCU controls to reduce the radio frequency gains of the first radio frequency transceiver chip and the second transceiver chip, so that the output power = Pmax, and the regulation value is Pout-Pmax = Rx + G1-Pmax; meanwhile, the MCU adjusts the uplink gain to reduce Pout-Pmax = Rx + G1-Pmax, so that the uplink and the downlink are balanced;
if the Pout is smaller than the maximum designed power Pmax of the downlink equipment, the MCU controls to increase the radio frequency gains of the first radio frequency transceiver chip and the second transceiver chip, so that the output power = Pmax, and the regulation value is Pmax-Pout = Pmax-Rx-G1; and simultaneously, the MCU adjusts the uplink gain to be improved by Pmax-Pout = Pmax-Rx-G1, so that the upper link and the lower link are balanced.
Example 2:
on the basis of the foregoing embodiment 1, the present embodiment provides a 5G mobile communication indoor microdistribution method, including: the access antenna is accessed to the 5G signal base station in a wireless signal connection mode, the access antenna is accessed to the signal processing unit in a wired signal connection mode, the signal processing unit is accessed to the forwarding antenna in a wired signal connection mode, and the forwarding antenna is accessed to the terminal in a wireless signal connection mode, so that 5G wireless signal coverage is achieved. The networking mode of the equipment among the access antenna, the signal processing unit and the forwarding antenna comprises the following steps: independent use, parallel networking and series networking.
As shown in fig. 3, the signal transmission between the 5G base station and the terminal is performed independently, i.e. by using one signal access antenna, one signal processing unit and one repeater antenna.
As shown in fig. 4, the parallel networking is to use one access antenna, multiple signal processing units and multiple forwarding antennas to transmit signals between the 5G base station and the terminal, where one signal processing unit is connected in parallel with other signal processing units, respectively, to implement parallel networking.
As shown in fig. 5, a plurality of sets of 5G mobile communication indoor micro distribution systems are adopted outside the serial networking, and the forwarding antennas and the access antennas between the plurality of sets of 5G mobile communication indoor micro distribution systems are in signal connection, so as to realize the serial networking.
In summary, the invention performs 5G mobile communication indoor microdistribution through the system, so that the coverage of 5G signals is improved, 5G base station time slot configuration is extracted by using the 5G baseband synchronization module, the on-off of the uplink and downlink radio frequency switches is controlled by using the MCU according to the 5G base station time slot ratio, the device synchronization function is realized, the strength of a received signal of the radio frequency transceiver chip can be detected by the MCU, and the gain of the uplink and downlink links is controlled, thereby ensuring that the uplink and downlink power amplifiers are in a linear working area, ensuring that the output signal of the device is stable, avoiding the problem of network quality fluctuation caused by signal fluctuation of an information source, and having the characteristic of low power consumption, wherein the power consumption of the whole set of system is not over 10W, and is saved by over 90% compared with the power consumption of a 5.
In terms of networking modes, the invention can adopt different networking modes according to practical application scenes to realize indoor signal coverage of 5G mobile communication with diversified requirements, namely, the invention supports two networking modes of parallel connection and series connection, can flexibly network according to the practical coverage scenes, and can form low-power multi-point drip irrigation type networking in an independent use mode, thereby ensuring that each device works in a smaller gain state, effectively ensuring the problem of system noise superposition and avoiding the influence on an access base station.
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 5G mobile communication indoor microdistribution system, comprising:
the receiving antenna is connected with a wireless signal of the 5G base station, the access frequency and the transmitting frequency of the receiving antenna are the same as the frequency of the 5G base station, and the receiving antenna is used for receiving a downlink signal of the 5G base station and transmitting an uplink signal of the terminal;
the forwarding antenna is connected with a terminal wireless signal, the access frequency and the transmitting frequency of the forwarding antenna are the same as the frequency of the 5G base station, and the forwarding antenna is used for receiving an uplink signal of the terminal and transmitting a downlink signal of the 5G base station; and
and the signal processing unit is used for connecting the signal with the receiving antenna and the forwarding antenna and processing the signal.
2. The indoor microdistribution system for 5G mobile communication of claim 1, wherein: the signal processing unit comprises a base station synchronization module used for balancing uplink and downlink and providing uplink and downlink time slots of the base station so as to synchronize the uplink and the downlink.
3. The 5G mobile communication indoor microdistribution system of claim 2, wherein: the base station synchronization module comprises a 5G baseband synchronization module, an MCU and a third antenna used for receiving downlink signals of the 5G base station, the third antenna is in signal connection with the 5G baseband synchronization module, the 5G baseband synchronization module is in signal connection with the MCU, and the MCU is in signal connection with a first radio frequency switch and a second radio frequency switch on an uplink and a downlink.
4. The indoor microdistribution system for 5G mobile communication according to any one of claims 1-3, characterized in that: the signal processing unit further comprises a downlink module for transmitting signals from the receiving antenna to the repeater antenna and an uplink module for transmitting signals from the repeater antenna to the receiving antenna.
5. The indoor microdistribution system for 5G mobile communication of claim 4, wherein: the downlink module comprises a first antenna interface a, a first filter a, a first low-noise amplifier, a first radio frequency switch, a first radio frequency transceiver chip a, a second radio frequency transceiver chip a, a first amplifier, a second filter a and a second antenna interface a which are sequentially connected through signals, wherein the first antenna interface a is used for being connected with an access antenna, the second antenna interface a is used for being connected with a forwarding antenna, and the first radio frequency transceiver chip a and the second radio frequency transceiver chip a are in signal connection with an MCU in a signal processing unit and used for detecting the received signal strength of the first radio frequency transceiver chip a and the second radio frequency transceiver chip a through the MCU.
6. The 5G mobile communication indoor microdistribution system of claim 5, wherein: the first radio frequency transceiver chip a and the second radio frequency transceiver chip a are both radio frequency transceiver chips with analog-digital conversion functions.
7. The indoor microdistribution system for 5G mobile communication of claim 4, wherein: the uplink module comprises a second antenna interface b, a second filter b, a second low-noise amplifier, a second radio frequency switch, a second radio frequency transceiver chip b, a first radio frequency transceiver chip b, a second amplifier, a first filter b and a first antenna interface b which are sequentially connected through signals, wherein the second antenna interface b is used for being connected with a forwarding antenna, the first antenna interface b is used for being connected with an access antenna, and the first radio frequency transceiver chip b and the second radio frequency transceiver chip b are in signal connection with an MCU in a signal processing unit and used for detecting the received signal strength of the first radio frequency transceiver chip b and the second radio frequency transceiver chip b through the MCU.
8. A5G mobile communication indoor microdistribution method is characterized by comprising the following steps: the indoor microdistribution system for 5G mobile communication comprising any one of claims 1-7, wherein the access antenna is connected to the 5G signal base station in a wireless signal connection mode, the access antenna is connected to the signal processing unit in a wired signal connection mode, the signal processing unit is connected to the forwarding antenna in a wired signal connection mode, and the forwarding antenna is connected to the terminal in a wireless signal connection mode.
9. The indoor microdistribution method for 5G mobile communication according to claim 8, wherein: the networking mode of the equipment among the access antenna, the signal processing unit and the forwarding antenna comprises the following steps: independent use, parallel networking and series networking.
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| CN112770333A (en) * | 2020-12-11 | 2021-05-07 | 武汉虹信科技发展有限责任公司 | 5G NR wireless distributed frequency shift system and frequency shift method |
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| CN112770333A (en) * | 2020-12-11 | 2021-05-07 | 武汉虹信科技发展有限责任公司 | 5G NR wireless distributed frequency shift system and frequency shift method |
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