CN111836272B - 5G variable frequency distribution system coverage end and control method thereof - Google Patents
5G variable frequency distribution system coverage end and control method thereof Download PDFInfo
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- CN111836272B CN111836272B CN202010808870.7A CN202010808870A CN111836272B CN 111836272 B CN111836272 B CN 111836272B CN 202010808870 A CN202010808870 A CN 202010808870A CN 111836272 B CN111836272 B CN 111836272B
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- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000010295 mobile communication Methods 0.000 description 3
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- 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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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Abstract
The invention discloses a 5G variable frequency distribution system coverage end and a control method thereof. In the coverage end, an intermediate frequency filter is connected between an intermediate frequency input/output port and a mixer, the mixer is connected with a base end of a fourth radio frequency switch, chang Biduan of the fourth radio frequency switch is connected with a normally closed end of a third radio frequency switch, a normally open end of the fourth radio frequency switch is connected with a normally open end of a second radio frequency switch, the base end of the third radio frequency switch is connected with a radio frequency filter, the radio frequency filter is connected with an amplifying tube, the normally open end of the third radio frequency switch is connected with a normally open end of a first radio frequency switch, the base end of the first radio frequency switch is used for being connected with a coverage antenna interface, chang Biduan of the first radio frequency switch is connected with the normally closed end of the second radio frequency switch, and the base end of the second radio frequency switch is connected with the amplifying tube. On the premise of reaching the performance of the conventional scheme, the invention can reduce the material cost of the covering unit by using relatively fewer devices, thereby reducing the overall manufacturing cost of the covering unit and improving the cost performance of the frequency conversion system.
Description
Technical Field
The invention relates to the technical field of 5G, in particular to a 5G variable frequency distribution system coverage end and a control method thereof.
Background
The 5G mobile communication network has the remarkable technical advantages of high speed, ubiquitous, low power consumption and low time delay, but the requirements are difficult to meet in high-capacity indoor wireless signal coverage, the operation quality is low, and the experience effect is poor. At present, 80% of services for mobile communication are generated indoors. Therefore, how to develop a new generation indoor distribution system, to improve indoor wireless coverage quality of the 5G mobile communication network, has become a key common problem that needs to be solved in 5G network standard networking.
In the initial stage of 5G network networking coverage, because of limited number of base stations and shortage of site resources, indoor signal coverage mainly covers hot spots and key areas, and domestic and foreign 5G indoor distribution systems mainly also mainly adopt digital optical fiber distribution systems of 5G base station main equipment manufacturers as main solutions, and 4T4R is mainly configured. The system can meet the access and coverage requirements of key business scenes currently. However, with 5G networking scale and terminal popularization, especially rapid growth of 5G vertical application, wireless coverage requirements for common commercial buildings and public activities are subject to explosive growth, and currently adopted high-capacity hot spot coverage schemes and systems cannot meet most of scene coverage requirements in terms of network deployment and network construction cost performance.
At present, most indoor common scenes have been deployed with huge numbers of passive indoor subsystem systems in 3G and 4G network infrastructures, and as shown in FIG. 1, the indoor subsystem systems mainly comprise high-power information sources, a combiner, a power division coupler, a feeder line and an antenna, and are low in cost and high in reliability. 5G-oriented indoor coverage, mobile, connected and telecommunications 5G TDD systems are also beginning to advance indoor distribution sources. The existing passive indoor distribution system has the defects that only one channel is designed for the prior cable distribution, so that the future requirement cannot be met in the aspect of 5G access capacity, and if a new indoor distribution system is completely established, the property coordination and construction difficulty is high, and the manufacturing cost is high. Preferably, the existing feeder line and distribution network can be utilized, the access, transmission and coverage of the 2x 2MIMO of the 5G signals are realized through innovative technical means, the coverage capacity is improved to a greater extent, and the 5G application experience of indoor users is supported.
For this application scheme, some radio frequency conversion systems have been proposed in the industry at present, as shown in fig. 2, a 5G single channel or two channels are moved to an idle frequency band suitable for the transmission of the current indoor distribution system through frequency conversion, then the frequency is restored back at the antenna coverage end, and the transmission coverage is performed through a new antenna, so that the transmission of the 5G two channels signal in the existing single channel indoor passive distribution network is realized. The current frequency conversion system consists of a conventional 5G RRU, an access host, an access terminal combiner and a coverage unit. Because the coverage unit is used for replacing the current indoor antenna, the consumption is large, the overall cost of the frequency conversion coverage system is determined by the cost of the coverage unit, and the current conventional 5G coverage unit adopts the circuits such as frequency conversion, filtering and amplification independently by adopting the uplink and downlink channels, so that the cost is still difficult to reach a low level, and the popularization and mass business of the scheme are greatly hindered.
Disclosure of Invention
The invention aims to provide a 5G variable frequency distribution system coverage end and a control method thereof, which are used for overcoming the defects in the prior art.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The utility model provides a 5G frequency conversion distribution system coverage end, includes first radio frequency switch, second radio frequency switch, third radio frequency switch, fourth radio frequency switch, radio frequency filter, intermediate frequency filter, mixer and amplifier tube, intermediate frequency filter connects between intermediate frequency input/output port and mixer, the mixer is connected with the base end S40 of fourth radio frequency switch, and the normally closed end S41 of fourth radio frequency switch is connected with the normally closed end S31 of third radio frequency switch, and the normally open end S42 of fourth radio frequency switch is connected with the normally open end S22 of second radio frequency switch, and the base end S30 of third radio frequency switch is connected with the radio frequency filter, the radio frequency filter is connected with the amplifier tube, and the normally open end S32 of third radio frequency switch is connected with the normally open end S12 of first radio frequency switch, the base end S10 of first radio frequency switch is used for being connected with the coverage antenna interface, and the normally closed end S11 of first radio frequency switch is connected with the normally closed end S21 of second radio frequency switch, and the base end S20 of second radio frequency switch is connected with the amplifier tube.
The invention also provides a control method of the coverage end of the 5G variable frequency distribution system, which comprises the following steps:
When in downlink working time slot, the base end S10 and the normally closed end S11 of the first radio frequency switch are conducted, the base end S20 and the normally closed end S21 of the second radio frequency switch are conducted, the base end S30 and the normally closed end S31 of the third radio frequency switch are conducted, the base end S40 and the normally closed end S41 of the fourth radio frequency switch are conducted, and after entering from the intermediate frequency filter and passing through the mixer, downlink intermediate frequency signals enter the fourth radio frequency switch and the third radio frequency switch, then enter the radio frequency filter and the amplifying tube in sequence, and finally reach the coverage antenna interface through the second radio frequency switch and the first radio frequency switch;
When the uplink working time slot is performed, the base end S10 and the normally open end S12 of the first radio frequency switch are conducted, the base end S20 and the normally open end S22 of the second radio frequency switch are conducted, the base end S30 and the normally open end S32 of the radio frequency switch are conducted, the base end S40 and the normally open end S42 of the radio frequency switch are conducted, uplink signals enter from the coverage antenna interface and sequentially enter the radio frequency filter through the first radio frequency switch and the third radio frequency switch, reach the second radio frequency switch through the amplifying tube, enter the mixer through the fourth radio frequency switch, and finally are output to the intermediate frequency input/output port through the intermediate frequency filter.
Compared with the prior art, the invention has the advantages that: the implementation of the invention can reduce the material cost of the covering unit by relatively fewer devices on the premise of reaching the performance of the conventional scheme, thereby reducing the overall cost of the covering unit and improving the cost performance of the frequency conversion system.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a conventional 5G variable frequency distribution system.
Fig. 2 is a schematic diagram of a coverage end of a conventional 5G variable frequency distribution system.
Fig. 3 is a schematic diagram of a coverage end of the 5G variable frequency distribution system according to the present invention.
Fig. 4 is a coverage end downlink signal trend chart of the 5G variable frequency distribution system according to the present invention.
Fig. 5 is an uplink signal trend diagram of a coverage end of the 5G variable frequency distribution system 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, thereby making clear and defining the scope of the present invention.
Referring to fig. 3, this embodiment discloses a coverage end of a 5G variable frequency distribution system, which includes a first radio frequency switch, a second radio frequency switch, a third radio frequency switch, a fourth radio frequency switch, a radio frequency filter, an intermediate frequency filter, a mixer and an amplifying tube, wherein the intermediate frequency filter is connected between an intermediate frequency input/output port and the mixer, the mixer is connected with a base end S40 of the fourth radio frequency switch, a normally closed end S41 of the fourth radio frequency switch is connected with a normally closed end S31 of the third radio frequency switch, a normally open end S42 of the fourth radio frequency switch S4 is connected with a normally open end S22 of the second radio frequency switch, a base end S30 of the third radio frequency switch is connected with the radio frequency filter, the radio frequency filter is connected with the amplifying tube, a normally open end S32 of the third radio frequency switch is connected with a normally open end S12 of the first radio frequency switch, a base end S10 of the first radio frequency switch is used for being connected with a coverage antenna interface, a normally closed end S11 of the first radio frequency switch is connected with a normally closed end S21 of the second radio frequency switch, and a base end S20 of the second radio frequency switch is connected with the amplifying tube.
In the embodiment of the application, the first radio frequency switch, the second radio frequency switch, the third radio frequency switch, the fourth radio frequency switch, the radio frequency filter, the intermediate frequency filter, the mixer and the amplifying tube can be selected from the components in the prior art.
Referring to fig. 4 and fig. 5, the present invention further provides a control method for a coverage end of the 5G variable frequency distribution system, including:
when in downlink working time slot, as shown in fig. 4, the base end S10 and the normally closed end S11 of the first radio frequency switch are conducted, the base end S20 and the normally closed end S21 of the second radio frequency switch are conducted, the base end S30 and the normally closed end S31 of the third radio frequency switch are conducted, the base end S40 and the normally closed end S41 of the fourth radio frequency switch are conducted, the trend of signals is shown by arrows in the figure, namely, after the downlink intermediate frequency signals enter from the intermediate frequency filter and pass through the mixer, the signals enter the fourth radio frequency switch and the third radio frequency switch, then enter the radio frequency filter and the amplifying tube in sequence, and finally reach the coverage antenna interface through the second radio frequency switch and the first radio frequency switch;
When in uplink working time slot, as shown in fig. 5, the base end S10 and the normally open end S12 of the first radio frequency switch are conducted, the base end S20 and the normally open end S22 of the second radio frequency switch are conducted, the base end S30 and the normally open end S32 of the radio frequency switch are conducted, the base end S40 and the normally open end S42 of the radio frequency switch are conducted, the trend of signals is shown by arrows in the figure, that is, uplink signals enter from the coverage antenna interface and sequentially pass through the first radio frequency switch and the third radio frequency switch to enter the radio frequency filter, then pass through the amplifying tube to reach the second radio frequency switch, then pass through the fourth radio frequency switch to enter the mixer, and finally pass through the intermediate frequency filter to be output to the intermediate frequency input/output port.
By implementing the invention, on the premise of reaching the performance of the conventional scheme, the material cost of the coverage unit can be reduced by relatively fewer devices, so that the overall cost of the coverage unit is reduced, and the cost performance of the frequency conversion system is improved.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, the patentees may make various modifications or alterations within the scope of the appended claims, and are intended to be within the scope of the invention as described in the claims.
Claims (2)
1. The coverage end of the 5G variable frequency distribution system is characterized by comprising a first radio frequency switch, a second radio frequency switch, a third radio frequency switch, a fourth radio frequency switch, a radio frequency filter, an intermediate frequency filter, a mixer and an amplifying tube, wherein the intermediate frequency filter is connected between an intermediate frequency input/output port and the mixer, the mixer is connected with a base end S40 of the fourth radio frequency switch, a normally closed end S41 of the fourth radio frequency switch is connected with a normally closed end S31 of the third radio frequency switch, a normally open end S42 of the fourth radio frequency switch is connected with a normally open end S22 of the second radio frequency switch, a base end S30 of the third radio frequency switch is connected with the radio frequency filter, the radio frequency filter is connected with the amplifying tube, a normally open end S32 of the third radio frequency switch is connected with a normally open end S12 of the first radio frequency switch, a base end S10 of the first radio frequency switch is used for being connected with a coverage antenna interface, a normally closed end S11 of the first radio frequency switch is connected with a normally closed end S21 of the second radio frequency switch, and a base end S20 of the second radio frequency switch is connected with the amplifying tube.
2. The method for controlling a coverage end of a 5G variable frequency distribution system according to claim 1, comprising:
When in downlink working time slot, the base end S10 and the normally closed end S11 of the first radio frequency switch are conducted, the base end S20 and the normally closed end S21 of the second radio frequency switch are conducted, the base end S30 and the normally closed end S31 of the third radio frequency switch are conducted, the base end S40 and the normally closed end S41 of the fourth radio frequency switch are conducted, and after entering from the intermediate frequency filter and passing through the mixer, downlink intermediate frequency signals enter the fourth radio frequency switch and the third radio frequency switch, then enter the radio frequency filter and the amplifying tube in sequence, and finally reach the coverage antenna interface through the second radio frequency switch and the first radio frequency switch;
When the uplink working time slot is performed, the base end S10 and the normally open end S12 of the first radio frequency switch are conducted, the base end S20 and the normally open end S22 of the second radio frequency switch are conducted, the base end S30 and the normally open end S32 of the radio frequency switch are conducted, the base end S40 and the normally open end S42 of the radio frequency switch are conducted, uplink signals enter from the coverage antenna interface and sequentially enter the radio frequency filter through the first radio frequency switch and the third radio frequency switch, reach the second radio frequency switch through the amplifying tube, enter the mixer through the fourth radio frequency switch, and finally are output to the intermediate frequency input/output port through the intermediate frequency filter.
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| CN111836272B true CN111836272B (en) | 2024-08-13 |
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| CN212727434U (en) * | 2020-08-12 | 2021-03-16 | 广州市瀚云信息技术有限公司 | 5G frequency conversion distribution system covers end |
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| TWI382675B (en) * | 2009-10-09 | 2013-01-11 | Novatek Microelectronics Corp | Rf siganl receiving apparatus |
| CN104092027B (en) * | 2014-07-03 | 2016-06-29 | 东南大学 | A kind of active integrated antenna based on vector modulator Up/Down Conversion module |
| CN205051653U (en) * | 2015-11-03 | 2016-02-24 | 扬州海科电子科技有限公司 | 6 -18GHz down coversion subassembly |
| CN106961284B (en) * | 2016-01-08 | 2019-07-19 | 大唐移动通信设备有限公司 | A kind of radio-frequency front-end system, base station |
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