CN115278575A - Method and system for realizing signal coverage of elevator mobile network - Google Patents
Method and system for realizing signal coverage of elevator mobile network Download PDFInfo
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- CN115278575A CN115278575A CN202211173236.6A CN202211173236A CN115278575A CN 115278575 A CN115278575 A CN 115278575A CN 202211173236 A CN202211173236 A CN 202211173236A CN 115278575 A CN115278575 A CN 115278575A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/33—Services specially adapted for particular environments, situations or purposes for indoor environments, e.g. buildings
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- 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
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/26—Circuits for superheterodyne receivers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a method and a system for realizing signal coverage of an elevator mobile network, wherein the method comprises the following steps: outputting a signal of a first frequency through a first frequency channel and a second frequency channel of a base station radio frequency unit; converting the first frequency signal output by the second frequency channel into a signal of a second frequency through a first frequency conversion module, wherein the second frequency is lower than the first frequency; if the cage unit is located outside the transmission range of the signal of the first frequency of the base station radio frequency unit, the cage unit receives the signal of the second frequency sent by the base station radio frequency unit, the received signal of the second frequency is converted into the signal of the first frequency through a second frequency conversion module, and the signal of the first frequency which is converted into the signal of the first frequency is provided for the user terminal through a fourth frequency channel. The invention solves the problem of signal coverage of the elevator mobile network at higher floors.
Description
Technical Field
The invention relates to the field of mobile communication, in particular to a method and a system for realizing elevator mobile network signal coverage.
Background
The dependence on mobile communication networks is getting more and more severe, however, the indoor area is always a difficult point for signal coverage. For example: the urban population density is large, high-rise buildings are very large, and the phenomenon that no signal exists in an elevator often occurs.
In conventional solutions, the elevator signal coverage system generally consists of a main machine unit and a follow-up unit, the main machine unit being mounted above the elevator machine room or hoistway. The following unit is installed on the elevator cage, and the main unit and the following unit transmit the mobile communication network signal. When the elevator car is close to the main machine unit, the following unit and the main machine unit reduce the gain of the system and ensure that the system does not self-excite; when the elevator car is moving away from the main unit, the system increases the gain quickly so that the user mobile network signal in the elevator is good. However, the higher the floor, the more difficult it is to ensure the quality of the mobile network signals in the elevator.
Therefore, a solution is needed.
Disclosure of Invention
The invention aims to provide a method, a system and a base station network for realizing elevator mobile network signal coverage by solving the problem of higher-floor elevator mobile network signal coverage.
In order to achieve the above object, a first aspect of the present invention provides a method for realizing signal coverage of an elevator mobile network, comprising the following steps:
s1a, outputting a signal of a first frequency through a first frequency channel and a second frequency channel of a base station radio frequency unit;
s1b, converting a first frequency signal output by the second frequency channel into a signal of a second frequency through a first frequency conversion module, wherein the second frequency is lower than the first frequency;
and S3a, if the cage unit is located outside the transmission range of the signal of the first frequency of the base station radio frequency unit, the cage unit receives the signal of the second frequency sent by the base station radio frequency unit, the received signal of the second frequency is converted into the signal of the first frequency through a second frequency conversion module, and the signal of the first frequency which is converted into the signal of the first frequency is provided for a user terminal through a fourth frequency channel.
Further, step S1b is followed by the following steps: and S3b, if the car unit installed at the top end of the elevator car is located in the transmission range of the signal of the first frequency of the base station radio frequency unit, the car unit receives the signal of the first frequency and the signal of the second frequency sent by the base station radio frequency unit, the received signal of the second frequency is converted into the signal of the first frequency through a second frequency conversion module, and the received signal of the first frequency and the converted signal of the first frequency are respectively converted into the signal of the first frequency through a third frequency channel and a fourth frequency channel to provide service for the user terminal.
Further, the method also comprises the following steps: s5a, outputting a signal of a first frequency through a third frequency channel and a fourth frequency channel of the lift car unit;
s5b, converting the signal of the first frequency output by the fourth frequency channel into the signal of the second frequency through the second frequency conversion module;
and S7a, if the base station radio frequency unit is located outside the transmission range of the signal of the first frequency of the cage unit, the base station radio frequency unit receives the signal of the second frequency sent by the cage unit, the received signal of the second frequency is converted into the signal of the first frequency through the first frequency conversion module, and the signal of the first frequency is transmitted through the second frequency channel.
Further, step S5b is followed by the following steps: and S7b, if the base station radio frequency unit is located in the transmission range of the signal of the first frequency of the car unit, the base station radio frequency unit receives the signal of the first frequency and the signal of the second frequency sent by the car unit, the received signal of the second frequency is converted into the signal of the first frequency through the first frequency conversion module, and the received signal of the first frequency and the converted signal of the first frequency are transmitted through the first frequency channel and the second frequency channel respectively.
As a preferable technical solution, after the step S1b and before the step S3a, the method further includes a step S2a of combining a signal of a first frequency channel of the base station radio frequency unit and a signal of a second frequency channel converted into a second frequency by a first combiner, and then transmitting the combined signal to the car unit by a radio frequency antenna;
and S2b, the car unit branches the received combined signal with the first frequency and the signal which is converted into the second frequency through a second combiner, and branches the signal with the first frequency to a third frequency channel and branches the signal with the second frequency to a fourth frequency channel respectively.
As a preferred technical solution, after S5b, the method further includes S6a, combining, by a second combiner, a signal of the first frequency in the third frequency channel of the car unit with a signal of the second frequency output by the fourth frequency channel and then transmitting the combined signal to the base station radio frequency unit through a radio frequency antenna;
and S6b, the base station radio frequency unit 2 branches the received combined signal with the first frequency and the signal with the second frequency through the first combiner, and branches the signal with the first frequency to a first frequency channel and branches the signal with the second frequency to a second frequency channel respectively.
As an alternative technical solution, in step S1c, the method further includes transmitting, by a first radio frequency antenna, a signal of a first frequency output by the first frequency channel, and transmitting, by a second radio frequency antenna, a signal of a second frequency output by the second frequency channel;
step S7a further comprises the step of receiving a signal of a second frequency sent by the car unit through the second radio frequency antenna;
and S7b, receiving a signal with a first frequency and a signal with a second frequency sent by the car unit through the first radio frequency antenna and the second radio frequency antenna respectively.
The invention provides a system for realizing signal coverage of an elevator mobile network, which comprises a base station radio frequency unit and a car unit which are connected with each other through a radio frequency antenna; wherein:
the base station radio frequency unit comprises a first frequency channel, a second frequency channel and a first frequency conversion module arranged in the second frequency channel; the first frequency channel is used for transmitting a signal of a first frequency transmitted to the car unit and transmitting a signal of the first frequency from the car unit; the first frequency conversion module is used for converting the signal of the first frequency transmitted to the car unit by the second frequency channel into the signal of the second frequency and converting the signal of the second frequency transmitted from the car unit by the second frequency channel into the signal of the first frequency; the second frequency is lower than the first frequency;
the lift car unit comprises a third frequency channel, a fourth frequency channel and a second frequency conversion module; the third frequency channel is used for transmitting signals of the first frequency transmitted to the base station radio frequency unit and transmitting signals of the first frequency from the base station radio frequency unit; the second frequency conversion module is configured to convert a signal of the first frequency, which is transmitted to the base station radio frequency unit by a fourth frequency channel, into a signal of the second frequency, and convert a signal of the second frequency, which is transmitted from the base station radio frequency unit by the fourth frequency channel, into a signal of the first frequency.
As a preferred technical solution, the base station radio frequency unit is further provided with a first combiner, and the car unit is further provided with a second combiner;
the first combiner is used for combining the signal of the first frequency channel and the signal of the second frequency channel which are transmitted to the car unit and then transmitting the combined signal to the car unit through a corresponding radio frequency antenna; the first combiner is also used for respectively branching the signals of the first frequency and the signals of the second frequency from the car unit to a first frequency channel and a second frequency channel;
the second combiner is used for respectively branching the signals of the first frequency and the signals of the second frequency from the base station radio frequency unit to a third frequency channel and a fourth frequency channel; the second combiner is further configured to combine the signal of the first frequency of the third frequency channel and the signal of the second frequency of the fourth frequency channel, which are transmitted to the base station radio frequency unit, and transmit the combined signal to the base station radio frequency unit through the corresponding radio frequency antenna.
As a preferable technical solution, the car unit further includes amplifiers respectively disposed in a third frequency channel and a fourth frequency channel, and the amplifiers are configured to amplify and transmit a signal of the first frequency in the third frequency channel and a signal of the first frequency in the fourth frequency channel.
A third aspect of the present invention provides a base station network, which includes the base station radio frequency unit, the radio frequency antenna, the car unit provided in the first aspect and the second aspect, and further includes a base station baseband unit, where the base station baseband unit is connected with the base station radio frequency unit.
The invention can solve the problem of signal coverage of the elevator mobile network at a higher floor so as to improve the perception of the user terminal in the elevator using the mobile network.
Drawings
To further disclose the specific technical content of the present disclosure, please refer to the attached drawings, wherein:
fig. 1 is a schematic diagram of a system for implementing signal coverage of an elevator mobile network according to the present invention;
fig. 2 is a schematic diagram of a framework of a base station radio frequency unit of a system for implementing signal coverage of an elevator mobile network according to an embodiment of the present invention;
fig. 3 is a schematic view of a frame of a car unit of a system for implementing signal coverage of an elevator moving network according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a framework of a base station radio frequency unit of a system for realizing signal coverage of an elevator mobile network according to another preferred embodiment of the present invention;
fig. 5 is a schematic view of a frame of a car unit of a system for implementing signal coverage of an elevator moving network according to another preferred embodiment of the present invention;
fig. 6 is a schematic flow chart of a method for realizing signal coverage of an elevator mobile network provided by the invention.
Detailed Description
The first embodiment is as follows:
referring to fig. 1, the present embodiment provides a system for realizing signal coverage of an elevator mobile network, which includes a base station radio frequency unit 2 and a car unit 5, and the base station radio frequency unit 2 and the car unit 5 are connected with each other through a radio frequency antenna 3. In the embodiment, the base station radio frequency unit 2 is installed at the top end of an elevator shaft; for example, an elevator machine room is provided at the top end of an elevator shaft, and the base station radio frequency unit 2 is disposed in the elevator machine room. The car unit 5 is mounted on top of an elevator car 6.
It will be appreciated that the elevator car 6 moves up and down the hoistway such that the user can reach the destination floor by riding on the elevator car 6. Mobile network signals used by a user in the elevator car 6 are respectively transmitted from the base station radio frequency unit 2 to the car unit 5 and then transmitted to the elevator car 6 for the user to use; the mobile network signal is then passed from the elevator car 6 back to the car unit 5 at its top end and back to the base station radio unit 2. Therefore, normal transmission and coverage of signals of the elevator uplink and downlink mobile networks are realized, and the signals of the user mobile network in the elevator are good.
Referring to fig. 2 and 3, the base station radio frequency unit 2 and the car unit 5 of the present invention each have a two-way passage. Specifically, the base station rf unit 2 includes a first frequency channel 26 and a second frequency channel 27; the car unit 5 comprises a third frequency channel 51 and a fourth frequency channel 52.
In this embodiment, the operating frequency of the base station rf unit 2 is a first frequency. I.e. in the base station radio unit 2, the radio frequency of the radio frequency signal passing through its first frequency channel 26 and second frequency channel 27 are both the first frequency. It will be appreciated that the first frequency channel 26 is used to transmit signals of a first frequency to be transmitted to the car unit 5 and to transmit signals of a first frequency from the car unit 5. At this time, the second frequency channel 27 is also similar to the first frequency channel 26.
Further, the base station rf unit 2 further includes a first frequency conversion module 28 disposed on the second frequency channel 27. The first frequency conversion module 28 is used for converting the signals of the first frequency transmitted by the second frequency channel 27 to the car unit 5 into signals of the second frequency and for converting the signals of the second frequency transmitted by the second frequency channel 27 from the car unit 5 into signals of the first frequency. Preferably, the second frequency is lower than the first frequency. The radio frequency signal has a low frequency and covers a greater distance, so that the second frequency covers a greater distance than the first frequency. That is, when the elevator car 6 and the car unit 5 mounted on its top end are outside the distance or range covered by the first frequency of the base radio unit 2, there is also a second frequency that can cover the distance between the elevator car 6, the car unit 5 mounted on its top end and the further base radio unit 2. Therefore, the problem of signal coverage of the elevator mobile network of a higher floor is solved.
In this embodiment, the third frequency channel 51 of the car unit 5 is used for receiving signals of the first frequency. Specifically, the third frequency channel 51 is used for transmitting signals of the first frequency transmitted to the base station rf unit 2 and transmitting signals of the first frequency from the base station rf unit 2. Further, the car unit 5 comprises a second frequency conversion module 55 arranged in the fourth frequency channel 52. The second frequency conversion module 55 is configured to convert the signal of the first frequency transmitted by the fourth frequency channel 52 to the base station rf unit 2 into the signal of the second frequency, and convert the signal of the second frequency transmitted by the fourth frequency channel 52 from the base station rf unit 2 into the signal of the first frequency. It can be understood that the first frequency is an operating frequency of the base station rf unit 2, and the first frequency can directly serve the user. Therefore, the signal of the second frequency needs to be converted into the signal of the first frequency.
In this embodiment, the car unit 5 further includes amplifiers respectively provided in the third frequency channel 51 and the fourth frequency channel 52. The amplifier is used for amplifying and transmitting a signal of the first frequency of the third frequency channel 51 and a signal of the first frequency of the fourth frequency channel 52 which is converted from the signal of the second frequency into the signal of the first frequency to the elevator car 6. When the elevator car 6 and the car unit 5 mounted on the top end thereof are located outside the distance or range covered by the first frequency of the base station radio frequency unit 2, the signal of the fourth frequency channel 52 is converted from the signal of the second frequency into the signal of the first frequency and sent to the elevator car 6 to provide service for the user. When the elevator car 6 and the car unit 5 installed at the top end of the elevator car are located in the distance or range covered by the first frequency of the base station radio frequency unit 2, the signal of the first frequency of the third frequency channel 51 and the signal of the fourth frequency channel 52, which is converted from the signal of the second frequency into the signal of the first frequency, can provide service for users; thus, the user in the bridge car 6 can obtain the experience of a dual-current mimo (Multiple Input Multiple Output to improve the channel capacity and transmission efficiency) mobile network (that is, the mobile network in the elevator has two channels of Output and Input signals, and the speed of the mobile network of the user in the bridge car 6 is faster and the experience is better).
Referring to fig. 2, further, the base station rf unit 2 further includes an external interface module 21, a baseband signal processing module 22, a clock module 24, and an rf module 25. The output end of the external interface module 21 is connected to the input end of the base station signal processing module 22 and the input end of the clock module 24, respectively. The clock module 24 is connected to the baseband signal processing module 22. The clock module 24 is used for synchronizing the signal of the base station radio frequency unit 2 with the time signal accessed by the external interface module 21. The output end of the baseband signal processing module 22 is connected with the input end of the radio frequency module 25; the output end of the rf module 25 is connected to one end of the first frequency channel 26 and one end of the second frequency channel 27, respectively; the other end of the first frequency channel 26 and the other end of the second frequency channel 27 are connected to the radio frequency antenna 3.
Referring to fig. 2 and 3, in a specific embodiment, when the rf antenna 3 has two rf antennas, a first frequency channel is switched on through the first rf antenna 31, and a second frequency channel is switched on through the second rf antenna 32. That is, the first frequency channel 26 is connected to the third frequency channel 51 via the first rf antenna 31, so that signals of the first frequency are transmitted between the base station rf unit 2 and the car unit 5. The second frequency channel 27 is connected to the fourth frequency channel 52 via the second rf antenna 32 so that signals at the second frequency are transmitted between the base station rf unit 2 and the car unit 5.
With reference to fig. 4 and 5, in another preferred alternative, the radiofrequency antenna 3 is a strip; and by providing combiners in the base station radio frequency unit 2 and the car unit 5, respectively, transmission of the signal of the first frequency and the signal of the second frequency is performed. Specifically, the base station radio frequency unit 2 is provided with a first combiner 29. The first combiner 29 is configured to combine the signal of the first frequency channel 26 and the signal of the second frequency channel 27 transmitted to the car unit 5, and then transmit the combined signal to the car unit 5 through a corresponding one of the radio frequency antennas 3; the first combiner 29 is also configured to branch the signals of the first frequency and the signals of the second frequency of the car unit 5 to the first frequency channel 26 and the second frequency channel 27, respectively.
The car unit 5 is provided with a second combiner 50. The second combiner 50 is configured to branch the signal of the first frequency and the signal of the second frequency from the base station radio frequency unit 2 to a third frequency channel 51 and a fourth frequency channel 52, respectively; the second combiner is further configured to combine the signal of the first frequency of the third frequency channel 51 and the signal of the second frequency of the fourth frequency channel 52, which are transmitted to the base station radio frequency unit 2, and transmit the combined signal to the base station radio frequency unit 2 through a corresponding radio frequency antenna. Therefore, the construction difficulty of arranging the two radio frequency antennas is reduced.
Referring to fig. 1 to 6, the present invention further provides a method for realizing signal coverage of an elevator mobile network, comprising the following steps:
s1a, outputting a signal of a first frequency through a first frequency channel 26 and a second frequency channel 27 of a base station radio frequency unit 2;
s1b, frequency-converting the first frequency signal output from the second frequency channel 27 into a signal of a second frequency through the first frequency conversion module 28, where the second frequency is lower than the first frequency;
and S3a, if the car unit 5 is located outside the transmission range of the signal of the first frequency of the base station radio frequency unit 2, the car unit 5 receives the signal of the second frequency sent by the base station radio frequency unit 2, converts the received signal of the second frequency into the signal of the first frequency through the second frequency conversion module 55, and provides service for the user terminal through the fourth frequency channel 52.
As will be appreciated, the second frequency is lower than the first frequency; i.e. the signal at the second frequency is covered a greater distance than the first frequency. Therefore, the problem of signal coverage of the elevator mobile network of a higher floor is solved.
Further, the following steps are also included after step S1 b:
and S3b, if the car unit 5 is located in the transmission range of the signal of the first frequency of the base station radio frequency unit 2, the car unit 5 receives the signal of the first frequency and the signal of the second frequency sent by the base station radio frequency unit 2, converts the received signal of the second frequency into the signal of the first frequency through the second frequency conversion module 55, and provides services for the user terminal through the received signal of the first frequency through the third frequency channel 51 and the signal of the first frequency through the fourth frequency channel 52. Thus, a dual-channel mobile network signal is provided for the user terminal of the elevator car 6, so that the user terminal can enjoy the high-efficiency network experience of the double-current mimo.
The above describes a scheme for realizing the coverage of the elevator downlink mobile network signal from the base station radio frequency unit 2 to the car unit 5, so as to provide the downlink mobile network signal service for the user terminal of the elevator car 6.
The scheme for realizing the signal coverage of the elevator uplink mobile network is provided below; the transmission of mobile network signals from the car unit 5, which directly serves the user terminals, to the base station radio unit 2 comprises the following steps:
s5a, outputting a signal of the first frequency through the third frequency channel 51 and the fourth frequency channel 52 of the car unit 5;
s5b, converting the signal of the first frequency output by the fourth frequency channel 52 into a signal of a second frequency through the second frequency conversion module 55; the second frequency is lower than the first frequency;
and S7a, if the base station radio frequency unit 2 is located outside the transmission range of the signal of the first frequency of the car unit 5, the base station radio frequency unit 2 receives the signal of the second frequency sent by the car unit 5, converts the received signal of the second frequency into the signal of the first frequency through the first frequency conversion module 28, and transmits the signal of the first frequency through the second frequency channel 27. Therefore, the problem of signal coverage of the elevator mobile network of a higher floor is solved.
Further, the following steps are also included after step S5 b:
and S7b, if the base station radio frequency unit 2 is located in the transmission range of the signal of the first frequency of the car unit 5, the base station radio frequency unit 2 receives the signal of the first frequency and the signal of the second frequency sent by the car unit 5, converts the received signal of the second frequency into the signal of the first frequency through the first frequency conversion module 28, and transmits the received signal of the first frequency and the signal of the first frequency through the first frequency channel 26 and the second frequency channel 27 respectively. Thus, a double-channel uplink mobile network signal is provided for the user terminal of the elevator car 6, so that the user terminal can enjoy the uplink high-efficiency network experience of double-current mimo.
In a specific embodiment, when the mobile network signal goes down from the base station radio frequency unit 2 to the car unit 5, after step S1b and before step S3a, the method further includes step S2a of combining the first radio frequency signal of the first frequency channel 26 of the base station radio frequency unit 2 and the signal, which is outputted by the second frequency channel 27 and is converted into the second frequency, by the first combiner 29, and then sending the combined signal to the car unit 5 by the radio frequency antenna 3;
and S2b, the car unit 5 branches the received combined first radio-frequency signal and the signal which is converted into the second frequency through the second combiner 50, and branches the first radio-frequency signal to the third frequency channel 51 and branches the second radio-frequency signal to the fourth frequency channel 52 respectively.
When the mobile network signal goes upward from the car unit 5 to the base station radio frequency unit 2, after S5b, the mobile network signal further includes S6a, after combining the signal of the first frequency of the third frequency channel 51 of the car unit 5 with the signal of the second frequency output by the fourth frequency channel 52 through the second combiner 50, the combined signal is sent to the base station radio frequency unit 2 through one radio frequency antenna 3;
s6b, the base station rf unit 2 branches the received combined first rf signal and the signal with the second frequency through the first combiner 29, and branches the signal with the first frequency to the first frequency channel 26 and branches the signal with the second frequency to the second frequency channel 27 respectively.
In an alternative embodiment, when the base station rf unit is connected to the car unit 5 through two rf antennas, the method for implementing signal coverage of the elevator mobile network further comprises transmitting a signal of a first frequency output by the first frequency channel through the first rf antenna 31 and transmitting a signal of a second frequency output by the second frequency channel through the second rf antenna 32 in step S1 c.
In step S7a, the method further comprises receiving a signal of a second frequency emitted by the car unit 5 through the second rf antenna 32.
In step S7b, the method further includes receiving the first frequency signal and the second frequency signal transmitted by the car unit 5 through the first rf antenna 31 and the second rf antenna 32, respectively.
It should be noted that the construction scheme using one rf antenna is more convenient than the construction scheme using two rf antennas. Preferably, the present invention transmits the mobile network signal through one rf antenna 3 in combination with the first combiner 29 and the second combiner 50, thereby realizing the coverage of the mobile network signal of the higher-rise elevator.
The second embodiment:
the embodiment provides a base station network to realize the coverage of elevator mobile network signals. The base station network comprises a base station radio frequency unit 2, a radio frequency antenna 3, a car unit 5 and a base station baseband unit in the first embodiment, wherein the base station baseband unit is connected with the base station radio frequency unit 2.
Specifically, the external interface module 21 of the base station radio frequency unit 2 is connected to the output end of the base station baseband unit, and receives the radio frequency signal output by the base station baseband unit. Therefore, the base station network provides more stable radio frequency signals for realizing the signal coverage of the elevator mobile network.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (10)
1. A method for realizing signal coverage of an elevator mobile network is characterized by comprising the following steps:
s1a, outputting a signal of a first frequency through a first frequency channel and a second frequency channel of a base station radio frequency unit;
s1b, converting a first frequency signal output by the second frequency channel into a signal of a second frequency through a first frequency conversion module, wherein the second frequency is lower than the first frequency;
and S3a, if the car unit is located outside the transmission range of the signal of the first frequency of the base station radio frequency unit, the car unit receives the signal of the second frequency sent by the base station radio frequency unit, the received signal of the second frequency is converted into the signal of the first frequency through a second frequency conversion module, and the signal of the first frequency which is converted into the signal of the first frequency is provided for service for the user terminal through a fourth frequency channel.
2. The method for realizing signal coverage of an elevator mobile network according to claim 1, further comprising the following steps after step S1 b:
and S3b, if the car unit installed at the top end of the elevator car is located in the transmission range of the signal of the first frequency of the base station radio frequency unit, the car unit receives the signal of the first frequency and the signal of the second frequency sent by the base station radio frequency unit, the received signal of the second frequency is converted into the signal of the first frequency through the second frequency conversion module, and the received signal of the first frequency and the converted signal of the first frequency are respectively converted into the signal of the first frequency through a third frequency channel and a fourth frequency channel to provide service for the user terminal.
3. The method for implementing elevator mobile network signal coverage as claimed in claim 1, further comprising the steps of:
s5a, outputting a signal of the first frequency through a third frequency channel and a fourth frequency channel of the lift car unit;
s5b, converting the signal of the first frequency output by the fourth frequency channel into the signal of the second frequency through the second frequency conversion module;
and S7a, if the base station radio frequency unit is located outside the transmission range of the signal of the first frequency of the car unit, the base station radio frequency unit receives the signal of the second frequency sent by the car unit, the received signal of the second frequency is converted into the signal of the first frequency through the first frequency conversion module, and the signal converted into the first frequency is transmitted through the second frequency channel.
4. The method for realizing signal coverage of the mobile network of the elevator according to claim 3, characterized in that the step S5b is followed by the following steps:
and S7b, if the base station radio frequency unit is located in the transmission range of the signal of the first frequency of the car unit, the base station radio frequency unit receives the signal of the first frequency and the signal of the second frequency sent by the car unit, the received signal of the second frequency is converted into the signal of the first frequency through the first frequency conversion module, and the received signal of the first frequency and the converted signal of the first frequency are transmitted through the first frequency channel and the second frequency channel respectively.
5. The method for realizing signal coverage of the mobile network of the elevator according to claim 1, wherein after step S1b and before step S3a, the method further comprises step S2a of combining the signal of the first frequency channel of the base station radio frequency unit and the signal of the second frequency channel converted into the second frequency by a first combiner, and then sending the combined signal to the car unit through a radio frequency antenna;
and S2b, the car unit branches the received combined signal with the first frequency and the signal which is converted into the second frequency through a second combiner, and branches the signal with the first frequency to a third frequency channel and branches the signal with the second frequency to a fourth frequency channel respectively.
6. The method for realizing signal coverage of the mobile network of the elevator according to claim 3, wherein after S5b, the method further comprises S6a, combining the signal of the first frequency of the third frequency channel of the car unit and the signal of the second frequency output by the fourth frequency channel by a second combiner, and then sending the combined signal to the base station radio frequency unit by a radio frequency antenna;
and S6b, the base station radio frequency unit branches the received combined signal with the first frequency and the signal which is converted into the second frequency through the first combiner, and branches the signal with the first frequency to a first frequency channel and branches the signal with the second frequency to a second frequency channel respectively.
7. The method for realizing signal coverage of the mobile network of the elevator according to claim 4, wherein step S1c further comprises transmitting a signal of a first frequency output by the first frequency channel through a first RF antenna, and transmitting a signal of a second frequency output by the second frequency channel through a second RF antenna;
step S7a further comprises the step of receiving a signal of a second frequency sent by the car unit through the second radio frequency antenna;
and S7b, receiving a signal with a first frequency and a signal with a second frequency sent by the car unit through the first radio frequency antenna and the second radio frequency antenna respectively.
8. A system for realizing signal coverage of an elevator mobile network is characterized by comprising a base station radio frequency unit and a car unit which are connected with each other through a radio frequency antenna; wherein:
the base station radio frequency unit comprises a first frequency channel, a second frequency channel and a first frequency conversion module arranged in the second frequency channel; the first frequency channel is used for transmitting a signal of a first frequency transmitted to the car unit and transmitting a signal of the first frequency from the car unit; the first frequency conversion module is used for converting the signal of the first frequency transmitted to the car unit by the second frequency channel into the signal of the second frequency and converting the signal of the second frequency transmitted from the car unit by the second frequency channel into the signal of the first frequency; the second frequency is lower than the first frequency;
the car unit comprises a third frequency channel, a fourth frequency channel and a second frequency conversion module; the third frequency channel is used for transmitting signals of the first frequency transmitted to the base station radio frequency unit and transmitting signals of the first frequency from the base station radio frequency unit; the second frequency conversion module is configured to convert a signal of the first frequency, which is transmitted to the base station radio frequency unit by a fourth frequency channel, into a signal of the second frequency, and convert a signal of the second frequency, which is transmitted from the base station radio frequency unit by the fourth frequency channel, into a signal of the first frequency.
9. The system for realizing elevator mobile network signal coverage according to claim 8, wherein:
the base station radio frequency unit is also provided with a first combiner, and the car unit is also provided with a second combiner;
the first combiner is used for combining the signal of the first frequency channel and the signal of the second frequency channel which are transmitted to the car unit and then transmitting the combined signal to the car unit through a corresponding radio frequency antenna; the first combiner is also used for respectively branching the signals of the first frequency and the signals of the second frequency from the car unit to a first frequency channel and a second frequency channel;
the second combiner is used for respectively branching the signals of the first frequency and the signals of the second frequency from the base station radio frequency unit to a third frequency channel and a fourth frequency channel; the second combiner is further configured to combine the signal of the first frequency of the third frequency channel and the signal of the second frequency of the fourth frequency channel, which are transmitted to the base station radio frequency unit, and transmit the combined signal to the base station radio frequency unit through a corresponding radio frequency antenna.
10. The system for realizing signal coverage of the mobile network of the elevator as recited in claim 8, wherein the car unit further comprises amplifiers respectively disposed in a third frequency channel and a fourth frequency channel, and the amplifiers are configured to amplify and transmit the signal of the first frequency of the third frequency channel and the signal of the first frequency of the fourth frequency channel to the elevator car.
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| CN116828576A (en) * | 2023-08-25 | 2023-09-29 | 深圳国人无线通信有限公司 | Energy saving method and system for elevator signal coverage system |
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