CN210629683U

CN210629683U - 5GOC indoor coverage system

Info

Publication number: CN210629683U
Application number: CN201922135130.7U
Authority: CN
Inventors: 胡志鹏; 刘严; 王波; 卓越; 谢强; 周金鹏; 宗楠
Original assignee: Beijing Gehua Cable Digital Media Co ltd
Current assignee: Beijing Gehua Cable Digital Media Co ltd
Priority date: 2019-12-03
Filing date: 2019-12-03
Publication date: 2020-05-26
Anticipated expiration: 2029-12-03

Abstract

The utility model discloses a 5GOC indoor coverage system, which comprises a main broadband combiner, a plurality of broadband combiners and separators; the input end of the main broadband combiner is respectively connected with the 5G signal output end of the 5G base station and the cable television signal output end of the cable television optical station through cables; the output end of the main broadband combiner is connected with the input port of the cable television network main line; the cable television network trunk line is connected with the cable television network branch line through a deconcentrator; the user-in end of the cable television network branch line is connected with the input end of the separator; and the output end of the separator is respectively connected with the television terminal and the 5G antenna. The utility model discloses the indoor coverage system of 5GOC closes 5G signal and CATV signal through the 5G combiner, then sends into the user indoor through the CATV cable distribution network of having installed broadband branch distribution device, utilizes current cable TV network, simultaneously, does not reduce cable TV's transmission quality.

Description

5GOC indoor coverage system

Technical Field

The utility model relates to an indoor coverage system of 5 GOC.

Background

After obtaining the 5G commercial license plate, each large mobile operator starts to deploy the 5G network, and the large-scale construction of the fifth-generation mobile communication network in China formally starts. In 5G network construction, indoor signal coverage is a critical ring. At present, domestic system integrators are still in a continuous exploration stage in the aspect of 5G indoor coverage construction, and aiming at the characteristics of a 5G network, a plurality of schemes are tried out in parallel without a definite theory.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a 5GOC indoor coverage system which has novel and unique structure and can effectively utilize the prior cable television network; the specific technical scheme is as follows:

a5 GOC indoor coverage system comprises a main broadband combiner, a plurality of broadband combiners and separators; the input end of the main broadband combiner is respectively connected with the 5G signal output end of the 5G base station and the cable television signal output end of the cable television optical station through cables; the output end of the main broadband combiner is connected with the input port of the cable television network main line; the cable television network trunk line is connected with the cable television network branch line through a deconcentrator; the user-in end of the cable television network branch line is connected with the input end of the separator; and the output end of the separator is respectively connected with the television terminal and the 5G antenna.

Furthermore, the cable television network also comprises a cable television amplifier, wherein the front end of the cable television amplifier is provided with a broadband filter, and the rear end of the cable television amplifier is provided with a broadband combiner; the output signal of the main broadband combiner is input into the broadband filter, the separated low-frequency signal is connected with the input end of a cable television amplifier, and the output end of the cable television amplifier is connected with the input end of a rear broadband combiner; the separated high-frequency signal is connected with the other input end of the rear-end broadband combiner through a direct connection cable, and the output end of the rear-end broadband combiner is connected with the input end of the branch extension network.

Further, the frequency of the low-frequency signal is 5MHz to 1500 MHz; the frequency of the high-frequency signal is 1500MHz to 5000 MHz.

The utility model discloses the indoor coverage system of 5GOC closes 5G signal and CATV signal through the 5G combiner, then sends into the user indoor through the CATV cable distribution network of having installed broadband branch distribution device, at user terminal CATV kneck installation separator (containing the antenna), separation 5G signal and CATV signal. The coverage range of the 5G signal can be expanded to the indoor of a cable television user quickly and at low cost by utilizing the existing cable television network, and meanwhile, the transmission quality of the cable television is not reduced.

Drawings

Fig. 1 is the utility model discloses the indoor coverage system structure sketch map of 5 GOC.

In the figure: 1. a 5G base station; 2. A cable television light station; 3. a broadband combiner; 4. A separator; 5. a television terminal; 6. 5G terminal antenna; 7. a wide band filter; 8. a cable television amplifier.

Detailed Description

The present invention will be more fully described with reference to the following examples. The present invention may be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein.

For ease of description, spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1, the 5GOC indoor coverage system in this embodiment is based on the modification of the existing cable television network. The existing cable television network adopts coaxial cable wiring; generally comprising a backbone network, a sub-network and a sub-network. The branch network cable is connected to the main network cable through the deconcentrator; the branch network cable is connected to the branch network cable through the deconcentrator.

The 5GOC indoor covering system comprises a main broadband combiner, a plurality of broadband combiners 3 and separators 4; the input end of the main broadband combiner is respectively connected with the 5G signal output end of the 5G base station 1 and the cable television signal output end of the cable television optical station 2 through cables; the output end of the main broadband combiner is connected with the input port of the cable television network main line; the cable television network trunk line is connected with the cable television network branch line through a deconcentrator; the subscriber end of the cable television network branch line is connected with the input end of the separator 4; the output of the splitter 4 is connected to a television terminal 5 and a 5G terminal antenna 6, respectively.

In order to extend the transmission distance, the cable television network also comprises a cable television amplifier 8, the front end of the cable television amplifier 8 is provided with a broadband filter 7, and the rear end is provided with a broadband combiner 3; the output signal of the main broadband combiner is input into a broadband filter 7, the separated low-frequency signal is connected with the input end of a cable television amplifier 8, and the output end of the cable television amplifier 8 is connected with the input end of a rear broadband combiner 3; the separated high-frequency signal is connected with the other input end of the rear-end broadband combiner 3, and the output end of the rear-end broadband combiner 3 is connected with the input end of the branch extension network.

The frequency of the low-frequency signal of the broadband filter 7 is 5MHz to 1500 MHz; the frequency of the high-frequency signal of the wide-band filter 7 is 1500MHz to 5000 MHz.

The bandwidth of the broadband filter 7, the bandwidth of the broadband combiner 3 and the bandwidth of the separator 4 are all 5-5000 MHz.

At present, a cable television network (CATV) basically covers indoor scenes such as each household, hotel room and the like, and the technical scheme of the embodiment utilizes the existing CATV network to transmit 5G signals to enter a household, so that the problem of indoor coverage of the 5G signals is solved. The 5GOC (5G Over CATV) is a novel networking technology for feeding and transmitting 5G signals by using cable distribution network resources of a cable television network (CATV), and realizes indoor 5G signal coverage.

The 5GOC is a set of wireless signal indoor deep coverage system, realizes the transmission of 5G signals through the existing CATV cable distribution network, and is a frequency division multiplexing wireless signal indoor coverage system.

The 5GOC combines the 5G signal with the CATV signal by using a special broadband (5-5000 MHz frequency range, the same below) combiner, then sends the combined signal into a user room through a CATV cable distribution network provided with a broadband branch distribution device, and is provided with a separator (comprising an antenna) at a CATV interface of a user terminal to separate the 5G signal from the CATV signal. The working frequencies of the 5G signal and the CATV signal are different, the 5G signal is transmitted through the antenna, and the CATV signal is transmitted to the television equipment without mutual interference.

Currently, the cable commonly used in CATV distribution networks is SYWV-75-5 coaxial cable. Experiments show that the attenuation constant (decibel of the hectometer-long coaxial cable to the signal attenuation) of the coaxial cable is in direct proportion to the mean square root of the signal working frequency ratio, namely the higher the frequency is, the larger the attenuation constant is. The CATV coaxial cable attenuates signals slightly more than the communication cable, but has much less transmission loss than the wireless space.

For example, in a free space (a wireless signal transmission space in which multipath propagation does not exist and no electric wave attenuation occurs), a transmission loss of a 5000MHz frequency signal in one hundred meters is about 86dB (Lf =32.45+20lg5000+20lg 0.1), and an attenuation constant of a SYWV-75-5 coaxial cable is about 54dB (a 1000MHz frequency signal attenuation constant of 24.2X √ 5).

For short-distance transmission less than one hundred meters, the transmission performance of the SYWV-75-5 coaxial cable on frequency signals above 2000MHz is better than that of wireless space transmission by more than 30 dB. By using the advantage of the coaxial cable, the CATV-based 5G signal short-distance transmission can be realized.

Description of networking:

1. firstly, the 5G signal and CATV signal are combined into a signal by a broadband combiner to generate a multiplexed 5G/CATV mixed signal.

2. The 5G/CATV mixed signal is transmitted to a terminal separator through an existing CATV cable distribution network, and may be divided into two transmission methods according to whether a transmission path of the mixed signal passes through an active amplifier:

①, the transmission path does not pass through the active amplifier, and the mixed signal is directly transmitted along the distribution network line.

②, the transmission path passes through the active amplifier, then a broadband filter is installed before the mixed signal passes through the active amplifier, the signal with the frequency range of 5-1500 MHz is transmitted to the active amplifier, meanwhile, the signal with the frequency range of 1500-5000 MHz bypasses the active amplifier through a direct connection cable, and then the signal is transmitted along the distribution network line after secondary combination.

3. The 5G/CATV mixed signal is divided into two paths by a terminal separator: 5G signals and CATV signals; the separated 5G signals are transmitted out through a terminal antenna, so that indoor signal coverage is realized, and CATV signals are transmitted to television equipment.

The above examples are only for illustrating the present invention, and besides, there are many different embodiments, which can be conceived by those skilled in the art after understanding the idea of the present invention, and therefore, they are not listed here.

Claims

1. A5 GOC indoor coverage system is characterized by comprising a cable television network main line, cable television network branch lines, a main broadband combiner, a plurality of broadband combiners and separators; the input end of the main broadband combiner is respectively connected with the 5G signal output end of the 5G base station and the cable television signal output end of the cable television optical station through cables; the output end of the main broadband combiner is connected with the input port of the cable television network main line; the cable television network trunk line is connected with the cable television network branch line through a deconcentrator; the user-in end of the cable television network branch line is connected with the input end of the separator; and the output end of the separator is respectively connected with the television terminal and the 5G antenna.

2. The indoor coverage system of 5GOC according to claim 1, further comprising a cable TV amplifier in the cable TV network, wherein a broadband filter is disposed at a front end of the cable TV amplifier, and a broadband combiner is disposed at a rear end of the cable TV amplifier; the output signal of the main broadband combiner is input into the broadband filter, the separated low-frequency signal is connected with the input end of a cable television amplifier, and the output end of the cable television amplifier is connected with the input end of a rear broadband combiner; the separated high-frequency signal is connected with the other input end of the rear-end broadband combiner through a direct connection cable, and the output end of the rear-end broadband combiner is connected with the input end of the branch extension network.

3. The 5GOC indoor coverage system of claim 2, wherein the frequency of the low frequency signal is 5MHz to 1500 MHz; the frequency of the high-frequency signal is 1500MHz to 5000 MHz.