CN211769564U - Novel access unit of distributed elevator signal amplification system - Google Patents
Novel access unit of distributed elevator signal amplification system Download PDFInfo
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- CN211769564U CN211769564U CN202020209790.5U CN202020209790U CN211769564U CN 211769564 U CN211769564 U CN 211769564U CN 202020209790 U CN202020209790 U CN 202020209790U CN 211769564 U CN211769564 U CN 211769564U
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Abstract
The utility model discloses a novel access unit of distributing type elevator signal amplification system, including donor transmitting antenna interface, donor receiving antenna interface, user antenna interface, downlink wide band low noise amplifier, downlink wide band microwave amplifier, go upward wide band power amplifier and wide band combiner, downlink wide band low noise amplifier one end and donor transmitting antenna interface connection, the downlink wide band low noise amplifier other end is connected with downlink wide band microwave amplifier, downlink wide band microwave amplifier still is connected with the wide band combiner, go upward wide band power amplifier one end and donor receiving antenna interface port and be connected, go upward the wide band power amplifier other end and be connected with the wide band combiner, the wide band combiner still with user antenna interface connection. The utility model discloses can compatible the work that satisfies FDD and TDD and need not the frequency channel combination simultaneously, the FDD standard need not to use duplexer, TDD standard need not to use synchronization module and change over switch, and the more ordinary access unit of cost reduces by a wide margin, has and is showing the cost advantage.
Description
Technical Field
The utility model relates to a wireless communication repeater field technical field, more specifically say, in particular to novel access unit of distributing type elevator signal amplification system.
Background
With the development of mobile communication network technology and the construction of communication infrastructure, mobile communication network coverage is deeper and deeper, the application requirements of mobile terminals such as mobile phones and the like are also increased explosively, and the user requirements are gradually increased from the initial outdoor application and the basic indoor application to the mobile access requirements of a full scene.
The elevator is used as a typical scene where users reside, and needs to achieve better network coverage requirements, and because the elevator shaft is seriously shielded by the building, signals inside the elevator car cannot be reached easily by either outdoor signals or signals inside floors, and the signal coverage effect is poor. Therefore, products and solutions for covering elevator signals are available in the industry, and at present, the most mainstream solution is to receive outdoor base station signals by using an antenna, transmit the signals to a machine room at the top of an elevator through a radio frequency cable of tens of meters, amplify the signals by using a broadband wireless repeater, pull the signals to the top of an elevator shaft through the radio frequency cable of tens of meters, and cover a car in the elevator shaft by using a covering antenna (shown in fig. 1). The coverage scheme has some defects, after the outdoor information source is received by the antenna, the outdoor information source is transmitted by a cable with the length of tens of meters, so that the obvious signal attenuation is brought, and if the strength of the information source received by the receiving antenna is not high originally, the amplitude of a useful signal is reduced after the signal is attenuated by a transmission radio frequency cable, the signal to noise ratio is insufficient, so that the signal strength is weak even after the signal is amplified by a wireless repeater, the signal quality cannot be improved, and the coverage effect of the elevator cannot be expected.
Therefore, aiming at an elevator coverage scene, a distributed elevator signal amplification system scheme (shown in fig. 2) is provided in the industry, the system generally comprises a signal access unit and a coverage unit, the access unit is located near a receiving antenna, and is used for receiving and amplifying signal models received in space, and influences caused by signal attenuation and signal-to-noise ratio deterioration due to feeder loss at an access end of a traditional single-machine amplifier scheme are made up.
In the scheme of the distributed elevator signal amplification system, the existing access units in the prior art all use a bidirectional amplifier design mode with the same principle as that of the coverage unit, and in order to achieve normal operation of equipment, the access units need to perform filtering (FDD system) (shown in fig. 3) or synchronous switch control (TDD system) (shown in fig. 3) aiming at a specific frequency band, so that on one hand, the design of the access units is the same as that of the coverage unit in frequency band combination design, different operators and frequency band configuration are specific in implementation, and in addition, the cost is basically equivalent to that of the coverage unit. Therefore, the cost of the distribution system is obviously increased compared with the cost of a single machine coverage scheme, the general type of the access unit can be not good, and each frequency band needs to be designed independently.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a novel access unit of distributing type elevator signal amplification system makes its coverage demand and the lower cost operation and maintenance demand in later stage that can be with the solution 5G network of relative low cost.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a novel access unit of distributing type elevator signal amplification system, includes donor transmitting antenna interface, donor receiving antenna interface, user antenna interface, downlink wide band low noise amplifier, downlink wide band microwave amplifier, goes upward wide band power amplifier and wide band combiner, downlink wide band low noise amplifier one end and donor transmitting antenna interface connection, the downlink wide band low noise amplifier other end is connected with downlink wide band microwave amplifier, downlink wide band microwave amplifier still is connected with the wide band combiner, go upward wide band power amplifier one end and donor receiving antenna interface port connection, go upward the wide band power amplifier other end and be connected with the wide band combiner, the wide band combiner still with user antenna interface connection.
Further, the uplink broadband power amplifier comprises a high-low frequency combiner, a first broadband power amplifier, a second broadband power amplifier and a high-low frequency splitter, wherein one end of the high-low frequency combiner is connected with the donor receiving antenna interface, one end of the first broadband power amplifier and one end of the second broadband power amplifier are both connected with the high-low frequency combiner, the other end of the first broadband power amplifier and the other end of the second broadband power amplifier are both connected with the high-low frequency splitter, and the high-low frequency splitter is further connected with the broadband combiner.
Compared with the prior art, the utility model has the advantages of: the utility model discloses can compatible the work that satisfies FDD and TDD and need not the frequency channel combination simultaneously, the FDD standard need not to use duplexer, TDD standard need not to use synchronization module and change over switch, and the more ordinary access unit of cost reduces by a wide margin, has and is showing the cost advantage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a diagram of a prior art elevator coverage scheme.
Fig. 2 is a diagram of a prior art distributed system elevator coverage scenario.
Figure 3 is a schematic diagram of a prior art FDD system access unit.
Fig. 4 is a schematic diagram of an access unit of a prior art FDD + TDD system.
Fig. 5 is the elevator coverage plan in the utility model.
Fig. 6 is a schematic diagram of a covering unit according to the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be more clearly and clearly defined.
Referring to fig. 5, the utility model discloses an access unit donor antenna end uses the double antenna scheme, and 1 donor receiving antenna is used for receiving outdoor down signal, and 1 donor transmitting antenna is used for launching the signal that goes upward, 1 user antenna interface, through feeder connection distribution system's cover unit.
Referring to fig. 6, the utility model provides a novel access unit of distributed elevator signal amplification system, including donor transmitting antenna interface 1, donor receiving antenna interface 2, user antenna interface 3, downlink wide band low noise amplifier 4, downlink wide band microwave amplifier 5, go upward wide band power amplifier and wide band combiner 6, 4 one ends of downlink wide band low noise amplifier are connected with donor transmitting antenna interface 1, and the 4 other ends of downlink wide band low noise amplifier are connected with downlink wide band microwave amplifier 5, downlink wide band microwave amplifier 5 still is connected with wide band combiner 6, go upward wide band power amplifier one end and donor receiving antenna interface 2 port connection, go upward the wide band power amplifier other end and be connected with wide band combiner 6, wide band combiner 6 still is connected with user antenna interface 3.
The uplink broadband power amplifier comprises a high-low frequency combiner 7, a first broadband power amplifier 8, a second broadband power amplifier 9 and a high-low frequency splitter 10, one end of the high-low frequency combiner 7 is connected with the donor receiving antenna interface 2, one end of the first broadband power amplifier 8 and one end of the second broadband power amplifier 9 are both connected with the high-low frequency combiner 7, the other end of the first broadband power amplifier 8 and the other end of the second broadband power amplifier 9 are both connected with the high-low frequency splitter 10, and the high-low frequency splitter 10 is further connected with the broadband combiner 6.
Specifically, the broadband described in this embodiment refers to the working frequency band of the current mobile communication system (2G/3G/4G/5G), i.e. 800MHz-4.9 GHz.
The first broadband power amplifier 8 is a power amplifier for a low frequency band in a frequency band supported by the access unit, and the second broadband power amplifier 9 is a power amplifier for a high frequency band in the frequency band supported by the access unit. Any way of dividing the operating frequency band into 2 segments or more than 2 segments to be processed by using the implementation scheme of the embodiment belongs to the extension of the present application.
An access unit supporting 800MHz-2700MHz is described in detail below, and is composed as follows
The access unit consists of a downlink 800MHz-2700MHz low noise amplifier, a downlink 800MHz-2700MHz microwave amplifier, an uplink 800MHz-1000MHz power amplifier, an uplink 1700MHz-2700MHz power amplifier, a high-low frequency combiner, a high-low frequency splitter and an 800MHz-2700MHz broadband combiner.
The down 800MHz-2700MHz low noise amplifier is connected to the donor receiving antenna interface and the down 800MHz-2700MHz microwave amplifier.
The downlink 800MHz-2700MHz microwave amplifier is connected with the lower 800MHz-2700MHz low noise amplifier and the 800MHz-2700MHz combiner.
And the uplink 800MHz-1000MHz power amplifier is respectively connected with the high-low frequency combiner and the high-low frequency divider.
And the uplink 1700MHz-2700MHz power amplifier is respectively connected with the high-low frequency combiner and the high-low frequency splitter.
The high-low frequency combiner is respectively connected with an uplink 800MHz-1000MHz power amplifier, an uplink 1700MHz-2700MHz power amplifier and a donor transmitting antenna port.
The 800MHz-2700MHz combiner is respectively connected with the downlink 800MHz-2700MHz microwave amplifier, the high-low frequency shunt and the user antenna interface.
The utility model discloses can compatible the work that satisfies FDD and TDD and need not the frequency channel combination simultaneously, the FDD standard need not to use duplexer, TDD standard need not to use synchronization module and change over switch, and the more ordinary access unit of cost reduces by a wide margin, has and is showing the cost advantage.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, various changes and modifications can be made by the owner within the scope of the appended claims, and the protection scope of the present invention should not be exceeded by the claims.
Claims (2)
1. The utility model provides a novel access unit of distributed elevator signal amplification system, its characterized in that, includes donor transmitting antenna interface, donor receiving antenna interface, user antenna interface, downlink wide band low noise amplifier, downlink wide band microwave amplifier, goes upward wide band power amplifier and wide band combiner, downlink wide band low noise amplifier one end and donor transmitting antenna interface connection, the downlink wide band low noise amplifier other end is connected with downlink wide band microwave amplifier, downlink wide band microwave amplifier still is connected with the wide band combiner, it is connected with donor receiving antenna interface port to go upward wide band power amplifier one end, goes upward the wide band power amplifier other end and is connected with the wide band combiner, the wide band combiner still with user antenna interface connection.
2. The novel access unit of distributed elevator signal amplification system of claim 1, wherein the uplink wideband power amplifier comprises a high-low frequency combiner, a first wideband power amplifier, a second wideband power amplifier and a high-low frequency splitter, one end of the high-low frequency combiner is connected with the donor receiving antenna interface, one end of the first wideband power amplifier and one end of the second wideband power amplifier are both connected with the high-low frequency combiner, the other end of the first wideband power amplifier and the other end of the second wideband power amplifier are both connected with the high-low frequency splitter, and the high-low frequency splitter is further connected with the wideband combiner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020209790.5U CN211769564U (en) | 2020-02-25 | 2020-02-25 | Novel access unit of distributed elevator signal amplification system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020209790.5U CN211769564U (en) | 2020-02-25 | 2020-02-25 | Novel access unit of distributed elevator signal amplification system |
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| CN211769564U true CN211769564U (en) | 2020-10-27 |
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| CN202020209790.5U Active CN211769564U (en) | 2020-02-25 | 2020-02-25 | Novel access unit of distributed elevator signal amplification system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114142962A (en) * | 2022-01-29 | 2022-03-04 | 深圳国人无线通信有限公司 | Split type elevator communication system based on TD network mode |
-
2020
- 2020-02-25 CN CN202020209790.5U patent/CN211769564U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114142962A (en) * | 2022-01-29 | 2022-03-04 | 深圳国人无线通信有限公司 | Split type elevator communication system based on TD network mode |
| CN114142962B (en) * | 2022-01-29 | 2022-05-17 | 深圳国人无线通信有限公司 | Split type elevator communication system based on TD network mode |
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