CN115277300A - Optimized room distribution system covering method and room distribution system - Google Patents
Optimized room distribution system covering method and room distribution system Download PDFInfo
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- CN115277300A CN115277300A CN202211208805.6A CN202211208805A CN115277300A CN 115277300 A CN115277300 A CN 115277300A CN 202211208805 A CN202211208805 A CN 202211208805A CN 115277300 A CN115277300 A CN 115277300A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
- H04L12/437—Ring fault isolation or reconfiguration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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Abstract
The invention provides an optimized covering method of an indoor distribution system and the indoor distribution system, wherein the method comprises the following steps: the remote unit is cascaded by an output port N of the expansion unit, and the expansion unit and the remote unit mutually transmit signals; n is an integer not less than 2; the last remote unit far away from the extension unit of the N-level cascade remote unit is connected with an auxiliary port of the extension unit, so that the extension unit and the N-level cascade remote unit form a ring network; when the connection between the extension unit and N remote units is abnormal, the auxiliary port of the extension unit is in a power output mode, and the N remote units trigger the changeover switch to enable the reverse coupling amplification circuit of the remote unit to work and transmit the coverage signal; and the power output mode is used for carrying out downlink output on the signals. The invention solves the problem that the connection between the extension unit and the cascade remote units is abnormal, which causes the failure of the following remote units.
Description
Technical Field
The invention relates to the field of mobile communication, in particular to an optimized indoor distribution system covering method and an indoor distribution system.
Background
An existing indoor distribution system scheme is an indoor coverage scheme based on transmission and distribution of wireless signals borne by optical fibers and feeders, and an indoor distribution system extension unit and a plurality of remote units adopt a chain networking mode, for example, the extension unit supports a chain structure of 4 cascaded remote units. However, the above-described scheme has the following problems: when any section of connection between the expansion unit and the cascaded remote units is abnormal, for example, when a feeder link has a problem, the remote units connected later will fail, so that the coverage and the coverage capability of the indoor distribution system are affected. Even when there is a problem with the connection between the extension unit and the level 1 remote unit close to it, all remote units will be disabled, resulting in the whole coverage area becoming a signal shadow, i.e. the network cannot cover.
Therefore, a solution is needed.
Disclosure of Invention
The invention aims to provide an optimized room distribution system covering method and a room distribution system, which solve the problem that the connection between an expansion unit and a cascaded remote unit is abnormal, so that the subsequent remote unit fails.
To achieve the above object, a first aspect of the present invention provides an optimized covering method for a room distribution system, comprising the following steps:
s1a, cascading a remote unit through a main port N of an extension unit, wherein the extension unit and the remote unit mutually transmit overlay network signals; n is an integer not less than 2;
s3a, connecting the last remote unit far away from the extension unit of the N-level cascade remote unit with an auxiliary port of the extension unit to enable the extension unit and the N-level cascade remote unit to form a ring network;
s5a, when the connection between the extension unit and a remote unit is abnormal, an auxiliary port of the extension unit is in a power output mode, and the remote unit triggers a changeover switch to enable a reverse coupling amplifying circuit of the remote unit to work and carry out transmission of a coverage signal; and the power output mode is used for carrying out downlink output on the signals.
Further, step S3a is followed by the following steps:
and S5b, when the extension unit and the N-level cascade remote unit are normally connected, a main port of the extension unit is in a power output mode, and a forward coupling amplification circuit of the N-level cascade remote unit works and transmits a coverage signal.
Further, in step S5a, when the connection between the extension unit and the N-stage cascade remote unit is abnormal and the remote unit is not online, the main port of the extension unit is in a load mode; step S5b further includes that when the extension unit is normally connected to the N-stage cascade remote unit, the auxiliary port of the extension unit is in a load mode; the load mode makes the auxiliary port of the extension unit a load.
As a preferable technical solution, the step S5a further includes: and when at least 1 stage of the remote unit is on line, keeping the main port of the expansion unit in a power output mode.
As a preferred technical solution, before step S5a, the following step of determining that the connection between the extension unit and the N-level cascade remote unit is abnormal is included:
and detecting that the auxiliary port of the expansion unit has no input signal and exceeds a first preset time and/or detecting that the remote unit has no input signal and exceeds a second preset time.
As a preferred technical solution, before step S5b, the following step of judging that the connection between the extension unit and the N-level cascade remote unit is normal is included:
detecting that the auxiliary port of the expansion unit has an input signal and/or detecting that the remote unit has an input signal for more than a third preset time.
Further, after the step S5a, when the connection between the extension unit and the N-stage cascade remote unit is recovered to normal, resetting the extension unit to make the main port of the extension unit in a power output mode and the auxiliary port in a load mode; the N-stage cascade far-end unit triggers a changeover switch to change a reverse coupling amplifying circuit of the far-end unit into a forward coupling amplifying circuit.
The second aspect of the present invention provides an indoor distribution system, including an extension unit and a remote unit, where the extension unit is connected to N-stage cascade remote units, N is an integer not less than 2; the extension unit comprises a main port and an auxiliary port; the main port is connected with a first remote unit closest to the expansion unit, and the auxiliary port is connected with a last remote unit far away from the expansion unit, so that the expansion unit and the N-level cascade remote unit form a ring network; the expansion unit has a power output mode; the power output mode is used for carrying out downlink output on signals; the remote unit comprises a reverse coupling amplifying circuit and a reversing switch; the reverse coupling amplifying circuit is used for switching the far-end unit into the reverse coupling amplifying circuit to work when the extension unit is abnormally connected with the N-stage cascade far-end unit and the auxiliary port of the extension unit is in a power output mode, so as to transmit the overlay network signal.
As a preferred technical solution, the remote unit further includes a forward coupling amplifier circuit, and the forward coupling amplifier circuit is configured to transmit an overlay network signal when the extension unit and the N remote units are normally connected and a main port of the extension unit is in a power output mode.
As a preferred technical solution, the extension unit further has a load mode, when the extension unit is abnormally connected with the N-level cascade remote unit and the remote unit is not online, the main port of the extension unit is in the load mode, and the load mode makes the main port of the extension unit be a load; when the extension unit is normally connected with the N-stage cascade remote unit, the auxiliary port of the extension unit is in a load mode, and the load mode enables the auxiliary port of the extension unit to be a load.
The extension unit is connected with the remote unit through the main port and the auxiliary port, so that the extension unit and the remote unit are in a ring networking mode, and when the extension unit and the remote unit are abnormally connected, the extension unit and the remote unit can still transmit a coverage network signal, thereby solving the problem that the coverage range and the coverage capability of the indoor distribution system are influenced because the extension unit and the cascaded remote unit are abnormally connected and the rear remote unit fails.
Drawings
To further disclose the detailed technical content of the present invention, please refer to the attached drawings, wherein:
FIG. 1 is a schematic diagram of a frame of a room distribution system according to the present invention;
FIG. 2 is a diagram illustrating an example of an abnormal connection between an expansion unit and a remote unit of the room distribution system shown in FIG. 1;
FIG. 3 is a diagram of another example of an abnormal connection between an expansion unit and a remote unit of the indoor subsystem shown in FIG. 1;
FIG. 4 is a block diagram of the operation and implementation of the reverse-coupled amplifier circuit of the remote unit of the room subsystem;
FIG. 5 is a schematic diagram of a forward coupling amplifier circuit of a remote unit of an indoor subsystem;
fig. 6 is a schematic flow chart of an optimized coverage method for an indoor distribution system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
Referring to fig. 1, the present embodiment provides an indoor distribution system, which includes an extension unit 3 and a remote unit 5, where the extension unit 3 is connected to N-stage cascade remote units 5; n is an integer of not less than 2. Fig. 1 shows a 4-stage cascaded remote unit, i.e. an extension unit 3 connected to a stage 1 remote unit 5 a; the level 1 remote unit 5a is connected to the level 2 remote unit 5b, and so on, the level 3 remote unit 5c is connected to the level 4 remote unit 5d, and thus, the cascade connection of the extension unit 3 and the remote unit 5 is established, so that the extension unit 3 and the remote unit 5 transmit the overlay network signal. It is understood that the room distribution system of the present application further includes at least a donor source, such as a signal source device, but the donor source is not a point of innovation of the present application, and the donor source and its structure are in the prior art, and therefore will not be described in detail herein.
In the present embodiment, the extension unit 3 includes a primary port 31 and an auxiliary port 33. The main port 31 is connected to the first remote unit 5 closest to the extension unit 3, and the auxiliary port 33 is connected to the last remote unit 5 far from the extension unit 3, so that the extension unit 3 and the N-stage cascade remote unit 5 form a ring network.
Specifically, the extension unit 3 has a power output mode and a load mode; the power output mode is to perform downlink output on the signal, and the load mode is to make the last port of the ring network formed by the extension unit 3 and the N-stage cascade remote unit 5 be a load. The load converts the received signal into energy and consumes or absorbs the energy, thereby improving the matching performance of the ring network. The remote unit 5 has a signal input port and a signal output port, and includes a forward coupling amplifying circuit 53, a reverse coupling amplifying circuit 55, and a switch. It can be understood that the switch needs to be compatible with both the input and output ports of the signal, and therefore, at least one pair of switches (58 a, 58 b) is provided.
Referring to fig. 1 and fig. 5, when the extension unit 3 and the N remote units 5 are connected normally, the main port 31 of the extension unit 3 is in a power output mode; the auxiliary port 33 of the expansion unit 3 is in a load mode. At this time, the forward coupling amplifying circuit 53 of the remote unit 5 is activated and operated, that is, the forward coupling amplifying circuit 53 is used for transmitting the overlay network signal when the extension unit 3 and the N remote units 5 are normally connected.
Referring to fig. 2 to 4, when the connection between the extension unit 3 and the N remote units 5 is abnormal, the auxiliary port 33 of the extension unit 3 is in a power output mode; and a pair of switch switches (58 a, 58 b) of the remote unit 5 is used to switch the remote unit 5 into the reverse coupling amplifying circuit 55 for effective work, so as to perform the transmission of the overlay network signal. That is, the reverse coupling amplifying circuit 55 is used for transmitting the overlay network signal when the connection between the extension unit 3 and the N-stage cascade remote unit 5 is abnormal. In this way, the extension unit 3 continues to maintain the transmission of overlay network signals with the cascaded remote units 5 through the auxiliary port 33; thereby ensuring that at least the remote unit 5 between the auxiliary port 33 and the abnormal point can work normally and greatly reducing the influence of the coverage; therefore, the problem that the coverage range and the coverage capability of the indoor distribution system are influenced because the expansion unit 3 is abnormally connected with the cascaded remote units 5 and the subsequent remote units 5 are invalid is solved.
Referring to fig. 2, when an abnormal point of an abnormal connection between the extension unit 3 and the N-level cascaded remote unit 5 is between the primary port 31 of the extension unit 3 and the first-level remote unit 5a, the N-level cascaded remote unit 5 will all fail, that is, none of the remote units 5 will be online, so that the whole coverage area becomes a signal blind area and there is no network coverage at all. At this time, the auxiliary port 33 of the extension unit 3 is set to a power output mode, and the main port 31 of the extension unit 3 is set to a load mode; all the N-stage cascade remote units 5 change to the reverse coupling amplifying circuit 55 to work (refer to fig. 4) through the reversing switches (58 a, 58 b), so that the extension unit 3 and all the N-stage cascade remote units 5 resume the transmission of signals, thus solving the problem that the coverage and the coverage capability are affected due to the failure of all the remote units 5.
Referring to fig. 3, further, although the extension unit 3 and the N-stage cascade remote units 5 are connected abnormally, when an abnormal point occurs between the cascade remote units 5, that is, when such an abnormal condition occurs, at least 1 stage or 1 remote unit is on line; for example, as shown in fig. 3, the first-stage remote unit 5a is online, that is, the first-stage remote unit 5a and the main port 31 of the extension unit 3 may still communicate signals with each other; the main port 31 of the extension unit 3 is kept in power output mode. At this time, the main port 31 and the auxiliary port 33 of the extension unit 3 are both in the power output mode, that is, two links with clear signals are formed between the extension unit 3 and the remote unit 5. Thus, all remote units 5 are kept on line, so that the problem that the coverage and the coverage capability of the indoor distribution system are affected due to the fact that the expansion unit 3 is abnormally connected with the cascaded remote units 5 and the subsequent remote units 5 are failed is solved.
In this embodiment, whether the remote unit 5 is online or not or whether the connection between the expansion unit 3 and the N-stage cascade remote unit 5 is normal is determined, and when the main port 31 of the expansion unit 3 is a power output module and the auxiliary port 33 is in a load mode, whether the auxiliary port 33 of the expansion unit 3 and the remote unit 5 have input signals or not may be determined by detecting within a certain expected time. For example: detecting that there is an input signal at the auxiliary port 33 and the remote unit 5 and that there is still an input signal for more than 1 minute (third predetermined time); the extension unit 3 is connected normally to the N-stage cascaded remote unit 5. On the contrary, when the main port 31 of the extension unit 3 is the power output module and the auxiliary port 33 is in the load mode, and it is detected that the remote unit 5 and the auxiliary port 33 have no input signal and exceed another expected time, for example, over 10 minutes, it is determined that the connection between the extension unit 3 and the N-stage cascade remote unit 5 is abnormal. It can be understood that when the remote units 5 are cascaded more, and there is a time delay in signal transmission, it may also be determined that the auxiliary port 33 of the extension unit 3 has no input signal and exceeds the first preset time, and that the remote units 5 have no input signal and exceeds the second preset time, respectively. The abnormal connection condition of the extension unit 3 and the N-level cascade remote unit 5 is monitored and found more timely; thereby timely implementing a scheme of abnormal conditions to keep the remote unit 5 online.
Referring to fig. 1 to 6, the present invention further provides an optimized room distribution system covering method, which includes the following steps executed in sequence:
s1a, cascading a remote unit 5 through a main port N of an extension unit 3, wherein the extension unit 3 and the remote unit 5 mutually transmit overlay network signals; n is an integer not less than 2;
s3a, the last remote unit 5, far away from the extension unit 3, of the N-level cascade remote units 5 is connected with an auxiliary port 33 of the extension unit 3, so that the extension unit 3 and the N-level cascade remote units 5 form a ring network;
s5a, when the connection between the extension unit 3 and the remote unit 5 is abnormal, the auxiliary port 33 of the extension unit 3 is in a power output mode, and the remote unit 5 triggers the reversing switches (58 a, 58 b) to enable the reverse coupling amplifying circuit 55 of the remote unit 5 to work and transmit the coverage signal; the power output mode is a downlink output for the signal.
In this way, the extension unit 3 continues to maintain the transmission of the overlay network signal with the cascaded remote unit 5 through the auxiliary port 33, thereby solving the problem that the coverage and the coverage capability of the indoor distribution system are affected due to the failure of the following remote unit 5 caused by the abnormal connection between the extension unit 3 and the cascaded remote unit 5.
Further, step S3a is followed by the following steps:
and S5b, when the extension unit 3 and the N-stage cascade remote unit 5 are connected normally, the main port 31 of the extension unit 3 is in a power output mode, and the forward coupling amplifying circuit 53 of the N-stage cascade remote unit 5 works and transmits the overlay signal.
In this embodiment, referring to fig. 2, in step S5a, when the connection between the extension unit 3 and the N-stage cascade remote unit 5 is abnormal and no remote unit 5 is online, the main port 31 of the extension unit 3 is in a load mode, and the load mode makes the main port 31 of the extension unit 3a load. Referring to fig. 1, step S5b further includes that when the extension unit 3 and the N-stage cascade remote unit 5 are connected normally, the auxiliary port 33 of the extension unit 3 is in a load mode, and the load mode makes the auxiliary port 33 of the extension unit 3 be a load.
Referring to fig. 3, it is preferable that step S5a further includes: when at least the 1-stage remote unit 5 is on line, the main port 31 of the extension unit 3 is kept in a power output mode; two links for clear signals are formed between the extension unit 3 and the remote unit 5. Therefore, more remote units 5 can be kept online, and the problem that the remote units 5 fail due to abnormal connection of the extension unit 3 and the cascaded remote units 5 is solved more optimally.
Specifically, the following steps of determining that the connection between the extension unit 3 and the N-level cascade remote unit 5 is abnormal are included before step S5 a: the auxiliary port 33 of the detection extension unit 3 has no input signal and exceeds a first preset time and the detection remote unit 5 has no input signal and exceeds a second preset time. Before step S5b, the following steps are included to determine that the connection between the extension unit 3 and the N-level cascade remote unit 5 is normal: the auxiliary port 33 of the detection extension unit 3 has an input signal and the detection remote unit 5 has an input signal for more than a third predetermined time. Therefore, the abnormal connection condition of the expansion unit 3 and the N-level cascade remote unit 5 is monitored and found more timely; thereby timely implementing an abnormal situation scenario to keep the remote unit 5 on-line. It can be understood that, in the case that the remote unit 5 is in effect working for the forward coupling amplifying circuit 53, detecting that the last level 1 remote unit of the N-level cascade remote unit 5 has an input signal and exceeds the third preset time, it may also be determined that the ring network is connected normally; otherwise, judging that the ring network is abnormal in connection; or under the condition that the far-end unit 5 works for the forward coupling amplifying circuit 53, detecting that the auxiliary port 33 of the extension unit 3 at the last end of the ring network has an input signal, and judging that the ring network is normally connected; otherwise, judging that the ring network is abnormal in connection;
furthermore, after the step S5a, when the connection between the extension unit 3 and the N-stage cascade remote unit 5 is recovered to normal, the extension unit 3 is reset, so that the main port 31 of the extension unit 3 is in the power output mode and the auxiliary port 33 thereof is in the load mode. And triggers the switch of the N-stage cascade remote unit 5 to switch the reverse coupling amplifying circuit 55 of the remote unit 5 to the forward coupling amplifying circuit 53.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An optimized room distribution system covering method is characterized by comprising the following steps:
s1a, cascading a remote unit through a main port N of an extension unit, wherein the extension unit and the remote unit mutually transmit overlay network signals; n is an integer not less than 2;
s3a, connecting the last far-end unit far away from the extension unit of the N-level cascade far-end unit with an auxiliary port of the extension unit to enable the extension unit and the N-level cascade far-end unit to form a ring network;
s5a, when the connection between the expansion unit and the remote unit is abnormal, the auxiliary port of the expansion unit is in a power output mode, and the remote unit triggers the changeover switch to enable the reverse coupling amplification circuit of the remote unit to work and transmit the coverage signal; and the power output mode is used for carrying out downlink output on the signal.
2. The method for optimizing coverage in a room subsystem as claimed in claim 1, further comprising the steps of, after step S3 a:
and S5b, when the extension unit and the N-level cascade remote unit are normally connected, a main port of the extension unit is in a power output mode, and a forward coupling amplification circuit of the N-level cascade remote unit works and transmits a coverage signal.
3. The method for optimizing coverage of an indoor subsystem as claimed in claim 2, wherein step S5a further includes setting a primary port of the extension unit to be in a load mode when the connection between the extension unit and the N-stage cascade remote unit is abnormal and the remote unit is not online; step S5b further includes that when the extension unit and the N-stage cascade remote unit are connected normally, the auxiliary port of the extension unit is in a load mode, and the load mode makes the auxiliary port of the extension unit a load.
4. The method for optimizing coverage of a room distribution system as claimed in claim 3, further comprising in step S5 a: and when at least 1 stage of the remote unit is on line, keeping the main port of the expansion unit in a power output mode.
5. The method for optimizing indoor coverage as claimed in claim 1, wherein step S5a is preceded by the steps of determining connection abnormality of said extension unit and N-stage cascade remote unit:
and detecting that the auxiliary port of the expansion unit has no input signal and exceeds a first preset time and/or detecting that the remote unit has no input signal and exceeds a second preset time.
6. The method for optimizing indoor coverage as claimed in claim 2, wherein the step S5b is preceded by the steps of determining that the connection between the expansion unit and the N-stage cascade remote unit is normal:
and detecting that the auxiliary port of the extension unit has an input signal and/or detecting that the remote unit has an input signal for more than a third preset time.
7. The optimized indoor distribution system coverage method as claimed in claim 1, further comprising after step S5a, resetting the extension unit when the connection between the extension unit and the N-stage cascade remote unit is recovered to normal, so that the primary port of the extension unit is in a power output mode and the auxiliary port thereof is in a load mode; the N-stage cascade far-end unit triggers a changeover switch to change a reverse coupling amplifying circuit of the far-end unit into a forward coupling amplifying circuit.
8. An indoor subsystem comprises an expansion unit and a remote unit, wherein the expansion unit is connected with N-level cascade remote units, and N is an integer not less than 2; the expansion unit is characterized by comprising a main port and an auxiliary port; the main port is connected with a first remote unit closest to the expansion unit, and the auxiliary port is connected with a last remote unit far away from the expansion unit, so that the expansion unit and the N-level cascade remote unit form a ring network; the extension unit has a power output mode; the power output mode is that signals are output in a downlink mode; the remote unit comprises a reverse coupling amplifying circuit and a reversing switch; the reverse coupling amplifying circuit is used for switching the far-end unit to the reverse coupling amplifying circuit to work when the expansion unit is abnormally connected with the N-stage cascade far-end unit and an auxiliary port of the expansion unit is in a power output mode, so that the overlay network signal is transmitted.
9. The indoor subsystem of claim 8, wherein: the remote unit further comprises a forward coupling amplifying circuit, and the forward coupling amplifying circuit is used for transmitting the overlay network signal when the extension unit is normally connected with the N remote units and the main port of the extension unit is in a power output mode.
10. The indoor subsystem of claim 8, wherein: the extension unit is also provided with a load mode, when the extension unit is abnormally connected with the N-stage cascade remote unit and the remote unit is not on line, the main port of the extension unit is in the load mode, and the load mode enables the main port of the extension unit to be a load; when the extension unit is normally connected with the N-stage cascade remote unit, the auxiliary port of the extension unit is in a load mode, and the load mode enables the auxiliary port of the extension unit to be a load.
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| CN112532333A (en) * | 2020-12-07 | 2021-03-19 | 京信通信***（中国）有限公司 | Signal synchronization method, signal synchronization device, light distribution system and storage medium |
| CN112804691A (en) * | 2021-01-29 | 2021-05-14 | 京信网络***股份有限公司 | Indoor distribution system and signal transmission method |
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| CN103401598A (en) * | 2013-07-17 | 2013-11-20 | 三维通信股份有限公司 | Novel multi-network-integrated indoor distribution system |
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| US20190122522A1 (en) * | 2017-10-19 | 2019-04-25 | Google Llc | Thoughtful elderly monitoring in a smart home environment |
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| CN112804691A (en) * | 2021-01-29 | 2021-05-14 | 京信网络***股份有限公司 | Indoor distribution system and signal transmission method |
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