CN100584062C

CN100584062C - Method for identifying remote RF unit in distributed base station and remove RF unit

Info

Publication number: CN100584062C
Application number: CN200610092628A
Authority: CN
Inventors: 于攀峰
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2006-06-26
Filing date: 2006-06-26
Publication date: 2010-01-20
Anticipated expiration: 2026-06-26
Also published as: CN1968462A

Abstract

The invention discloses a method for identifying a remote radio frequency unit in a distributed base station. The basic idea is that after using an RRU to enter a maintenance state, the RRU controls a panel indicator light to make the panel indicator light identify that the remote radio frequency unit is in the maintenance state. Correspondingly, the invention also discloses the remote radio frequency unit in the distributed base station. The technical solution can intuitively and quickly identify the RRU in the maintenance state at the RRU maintenance site, which is beneficial to improving the quality of operation and maintenance of the mobile network operator.

Description

The method and the remote radio unit (RRU) of sign remote radio unit (RRU) in distributed base station

Technical field

The present invention relates to distributed base station, relate in particular to the method and the remote radio unit (RRU) of sign remote radio unit (RRU) in distributed base station.

Background technology

Distributed base station is for the traditional base station.In the traditional base station, BBU of base station (BaseBand Unit, Base Band Unit) and RRU (Remote Radio Unit, long-distance radio frequency unit) concentrate in the rack; In distributed base station, the base station has been divided into two independent parts, respectively BBU and RRU is disposed, and links to each other by optical fiber or alternate manner between BBU and the RRU.

Please refer to Fig. 1, be the distributed base station schematic diagram.In a distributed base station, comprise a BBU and a plurality of RRU, BBU and RRU installation portion respectively are deployed in different physical locations, for example, BBU is installed in the standard machine room, so that good power backup and environmental condition to be provided, and RRU is installed in antenna proximal end, to reduce the feeder loss between base station and antenna.When the network planning of reality, usually three RRU are installed in same physical location simultaneously, each RRU covers a sector, to realize the covering of three sectors.Usually in a distributed base station, RRU quantity is more, and the installation site do not have strict restriction, and several RRU can pass through the covering of fiber optic stretch hundreds of～several kms with the realization zones of different, also can be installed in back-to-back under the same antenna, finish the covering of many sectors.

Please refer to Fig. 2, distributed base station has following three kinds of maintenance modes:

1. remote maintenance: the technical staff by EMS (Element MangerSystem, Element management system) control RNC (Radio Network Controller, radio network controller), monitors the equipment operation situation of whole network in the centralized network management system;

2.BBU near-end maintaining: the user is in the ruuning situation of the BBU of distributed base station near-end by LMT (LocalMaintenance Terminal, LMT Local Maintenance Terminal) monitoring single base station;

3. repair or replacing RRU: when the RRU fault, the user is to place under repair of RRU near-end or replacing.

Because RRU distributes and installs in the distributed base station, therefore, in the maintenance of actual RRU, when RRU broke down, the attendant need arrive RRU place under repair or replacing, had the problem that how could find the RRU that need safeguard easily.For example, the attendant sees that at the alarm monitoring platform at centralized network management center the 3#RRU of 2# base station has reported alarm, needs to change to the RRU near-end, after the attendant has arrived near-end, three RRU has been installed near the discovery, and this relates to the method for sign RRU.

Existing a kind of sign RRU method is as follows: in generating the RRU process, the sequence number of RRU is attached on the shell of RRU.When the attendant prepares the RRU near-end maintaining, earlier at centralized network management center remote inquiry to the sequence number of waiting to safeguard RRU (being kept in the memory device of RRU), take the RRU near-end after copying to, comparison query to wait to safeguard whether the sequence number of pasting on RRU sequence number and the RRU shell consistent, whether seek RRU in this way and be needs the RRU that safeguards.

Existing another kind of sign RRU method is as follows: initially building a station when RRU is installed, with the number record of each RRU on the shell of RRU.For example, when 3#RRU is installed, manually write the mark of " 3#RRU " in the blank space of RRU shell.When the attendant prepared the RRU near-end maintaining, the attendant at first inquired about and writes down the numbering of waiting to safeguard the RRU correspondence from the centralized network management center, during to the RRU near-end maintaining, according to the numbering mark on the RRU shell, searched out the RRU that needs maintenance.

From above prior art as can be seen: use sequence number or mark sign RRU, be unfavorable for carrying out on-site maintenance work.Technical attendant is time the on-site maintenance RRU, at first to write down sequence number or the numbering of waiting to safeguard RRU, sequence number or the numbering that to copy the sequence number or the numbering of getting off then and be marked on the RRU contrast, need to confirm the RRU of maintenance, do not only trouble like this, and record the time may make mistakes, and is not easy to the RRU that the on-site maintenance personnel searching is in maintenance state.If remotely modifying the configuration of RRU, make the RRU numbering that change take place, and the numbering mark on the RRU shell can't real time modifying, may cause actual numbering and the numbering on the shell of RRU inconsistent, the RRU that can't find needs to safeguard according to the RRU numbering during at near-end maintaining when technical attendant is so second kind of identification method also exists the marker number of numbering data and actual RRU inconsistent and can't find the problem of RRU.

Summary of the invention

The purpose of this invention is to provide the method and the long-distance radio frequency unit of sign long-distance radio frequency unit in distributed base station, can realize being in maintenance state by panel leds maintenance operation status indicator radio frequency unit.

For achieving the above object, the present invention is achieved through the following technical solutions:

A kind of method that in distributed base station, identifies long-distance radio frequency unit, comprising: 1) the receiving remote radio frequency unit enters the request of maintenance state, triggers the maintenance process of long-distance radio frequency unit, and described long-distance radio frequency unit enters maintenance state; 2) described long-distance radio frequency unit control panel indicator light enters the maintenance operation state, makes panel leds sign long-distance radio frequency unit be in maintenance state.

Preferably, described trigger process is: the maintenance process of described long-distance radio frequency unit is triggered at the centralized network management center; Perhaps long-distance radio frequency unit detects system's operation troubles, triggers maintenance process.

Preferably, described step 2) afterwards, described long-distance radio frequency unit withdraws from maintenance state.

Preferably, the described process that withdraws from is, triggers the maintenance process that withdraws from of described long-distance radio frequency unit by the centralized network management center, and described long-distance radio frequency unit withdraws from maintenance state.

Preferably, the described process that withdraws from is that described long-distance radio frequency unit executive system in maintenance process resets, and withdraws from maintenance state automatically.

Preferably, the described process that withdraws from is that the maintenance state control button on the triggering panel makes described long-distance radio frequency unit withdraw from maintenance state.

Preferably, described panel leds is power supply indicator and/or run indicator; Described maintenance operation state glimmers for using in 1 hertz to the 5 hertz scope frequency wherein.

A kind of long-distance radio frequency unit in distributed base station, comprise power supply indicator and run indicator on the panel, also comprise the maintenance state request processing module, the panel leds control module: the maintenance state request processing module is used for the request that the receiving remote radio frequency unit enters maintenance state, trigger the maintenance process of long-distance radio frequency unit, make described long-distance radio frequency unit enter maintenance state; Send panel leds and enter the request of maintenance operation state to described panel leds control module; After the panel leds control module is used to receive panel leds that described maintenance state request processing module sends and enters the request of maintenance operation state, power supply indicator on the control panel and/or run indicator make power supply indicator and/or run indicator on the described panel enter the maintenance operation state; Power supply indicator on the panel and run indicator are used for by working in the maintenance operation state, and the sign long-distance radio frequency unit is in maintenance state, and described maintenance operation state glimmers for using in 1 hertz to the 5 hertz scope frequency wherein.

A kind of long-distance radio frequency unit in distributed base station, comprise maintenance state request processing module, panel leds control module and maintenance state indicator light: the maintenance state request processing module is used for the request that the receiving remote radio frequency unit enters maintenance state, trigger the maintenance process of long-distance radio frequency unit, make described long-distance radio frequency unit enter maintenance state; Send panel leds and enter the request of maintenance operation state to described panel leds control module; After the panel leds control module was used to receive panel leds that described maintenance state request processing module sends and enters the request of maintenance operation state, control maintenance state indicator light made panel leds enter the maintenance operation state; The maintenance state indicator light is used for by working in the maintenance operation state, and the sign long-distance radio frequency unit is in maintenance state.

Preferably, also comprise the maintenance state control button: the maintenance state control button is used to send long-distance radio frequency unit and withdraws from the maintenance state request to described maintenance state request processing module; The maintenance state request processing module also is used to receive the request that long-distance radio frequency unit that described maintenance state control button sends withdraws from maintenance state, makes described long-distance radio frequency unit withdraw from maintenance state; Send the control panel indicator light and withdraw from the request of maintenance operation state to described panel leds control module; After the panel leds control module also was used to receive control panel indicator light that described maintenance state request processing module sends and withdraws from the request of maintenance operation state, control maintenance state indicator light made the maintenance state indicator light withdraw from the maintenance operation state.

As can be seen from the above technical solutions, enter maintenance state because the present invention when RRU need safeguard, triggers RRU, RRU control panel indicator light makes panel leds sign RRU be in maintenance state.By this identification means, the on-the-spot attendant of feasible maintenance can search out the position that need safeguard RRU fast, can shorten the time of the on-the-spot RRU of searching, and the need that assurance is found are safeguarded the correctness of RRU, alleviate the work of maintenance personnel amount, improve the O﹠M quality of Mobile Network Operator.

Further, in the technical program, the centralized network management center sends request makes RRU enter maintenance state, or long-distance radio frequency unit detects system's operation troubles and enters maintenance state automatically, this dual mode can make the indication of RRU control panel enter the maintenance operation state, make no matter be active maintenance RRU, or the RRU accident breaks down, can be from the maintenance operation state recognition source of RRU panel leds in the RRU of maintenance state.

Further, in the technical program, utilize the maintenance operation status indicator RRU of existing power supply indicator of panel and/or run indicator to be in maintenance state, perhaps on panel, increase the maintenance state indicator light, utilize the maintenance operation status indicator RRU of this lamp to be in maintenance state; These two kinds of technical schemes can both make the on-site maintenance personnel identify the RRU that is in maintenance state easily, when reality is implemented this programme, can select above-mentioned dual mode according to implementation cost and site environment.

Further, after maintenance work is finished, the invention provides the request mode that withdraws from maintenance state from concentrated gateway center transmission RRU and make RRU withdraw from maintenance state, perhaps on the RRU panel, increase the maintenance state control button, make RRU withdraw from maintenance state by triggering this button.On-site maintenance personnel and network management technology personnel can make RRU withdraw from maintenance state, make to safeguard that the affirmation work after finishing has very big flexibility.

Description of drawings

Fig. 1 is the distributed base station schematic diagram;

Fig. 2 is a base station maintenance mode schematic diagram;

Fig. 3 is a method flow diagram of the present invention;

Fig. 4 is the method flow diagram of the specific embodiment of the invention;

Fig. 5 is long-distance radio frequency unit one schematic diagram of the present invention;

Fig. 6 is long-distance radio frequency unit two schematic diagrames of the present invention.

Embodiment

The invention provides the method and the long-distance radio frequency unit of sign long-distance radio frequency unit in distributed base station, after its basic thought was to use RRU to enter maintenance state, RRU control panel indicator light made panel leds sign long-distance radio frequency unit be in maintenance state.

Please refer to Fig. 3, be method flow diagram of the present invention, may further comprise the steps:

P1. trigger the maintenance process of long-distance radio frequency unit, described long-distance radio frequency unit enters maintenance state;

P2. described long-distance radio frequency unit control panel indicator light makes panel leds sign long-distance radio frequency unit be in maintenance state.

For further understanding the present invention, below the technical program is described in detail by embodiment:

Please refer to Fig. 4, be the method flow diagram of the specific embodiment of the invention:

Step 1A. technical staff finds that from the centralized network management center RRU breaks down.

In distributed base station, RRU is as long-distance radio frequency unit, and the descending digital service conversion of signals of being responsible for receiving from BBU is that radiofrequency signal sends to and eats dishes without rice or wine, and from the received RF signal of eating dishes without rice or wine, and sends to BBU after being converted to the upstream digital service signal.Concrete, the fault that RRU occurs mainly comprises following several:

1) link down between RRU and the BBU;

2) jumper terminal between RRU and the antenna feeder is not tightened;

3) module failures such as the power amplifier of RRU inside, reception amplifier.

When above-mentioned fault appears in RRU, will cause the Zone degradation or the covering of RRU carrying to diminish, will cause the Zone of RRU carrying to interrupt fully when serious.After RRU breaks down, give the centralized network management center with fault information reporting.

For making the centralized network management center can send inquiry and change the request of RRU maintenance state, need be between centralized network management center and BBU, and provide special interface between BBU and the RRU, described interface can be realized inquiry and change the RRU maintenance state.Below inquire about the information format of RRU for the centralized network management center:

Whether table 1 is in the maintenance state request for mind-set BBU in the centralized network management sends inquiry RRU

Parameter name	Span	Parametric description
Parameter name	Span	Parametric description	CMD_ID	CMD_QRY_RRU_MNT_REQ	Command code
RRU_ID	0～255	The numbering that needs the RRU of maintenance	CMD_ID	CMD_QRY_RRU_MNT_REQ	Command code

Table 1

Whether table 2 is in the maintenance state request for BBU sends inquiry RRU to RRU

Parameter name	Span	Parametric description
Parameter name	Span	Parametric description	CMD_ID	CMD_SET_RRU_MNT_REQ	Command code

Table 2

Table 3 is RRU response BBU query requests

Parameter name	Span	Parametric description
Parameter name	Span	Parametric description	CMD_ID	CMD_SET_RRU_MNT_RSP	Command code
RESULT	(SUCCESS，FAILURE)	Command execution results: success, failure	CMD_ID	CMD_SET_RRU_MNT_RSP	Command code
RESULT	(SUCCESS，FAILURE)	Command execution results: success, failure	IS_MNT_STATUS	(YES，NO)	Whether be in maintenance state: be, not

Table 3

Table 4 is the query requests at BBU response centralized network management center

Parameter name	Span	Parametric description
Parameter name	Span	Parametric description	CMD_ID	CMD_SET_RRU_MNT_RSP	Command code
RRU_ID	0～255	The numbering that needs the RRU of maintenance	CMD_ID	CMD_SET_RRU_MNT_RSP	Command code
RRU_ID	0～255	The numbering that needs the RRU of maintenance	RESULT	(SUCCESS，FAILURE)	Command execution results:

		Success, failure
		Success, failure	IS_MNT_STATUS	(YES，NO)	Whether be in maintenance state: be, not

Table 4

Step 2A. is after having found that RRU breaks down, or RRU needs reasons such as upgrading, and the centralized network management center sends RRU and enters the request of maintenance state to BBU.

Table 5 is the solicited message that mind-set BBU sends in the centralized network management, and this request can be provided with RRU and enter/withdraw from maintenance state.

Parameter name	Span	Parametric description
Parameter name	Span	Parametric description	CMD_ID	CMD_SET_RRU_MNT_REQ	Command code
RRU_ID	0～255	The numbering that needs the RRU of maintenance	CMD_ID	CMD_SET_RRU_MNT_REQ	Command code
RRU_ID	0～255	The numbering that needs the RRU of maintenance	OPERATION	(ENTER_MNT，EXIT_MNT)	Action type: enter maintenance state, withdraw from maintenance state

Table 5

Step 3A.BBU receives after RRU enters the request of maintenance state, forwards the request to RRU.

Table 6 is the solicited message that BBU sends to RRU, and this request can be provided with RRU and enter/withdraw from maintenance state

Parameter name	Span	Parametric description
Parameter name	Span	Parametric description	CMD_ID	CMD_SET_RRU_MNT_REQ	Command code
OPERATION	(ENTER_MNT，EXIT_MNT)	Action type: enter maintenance state, withdraw from maintenance state	CMD_ID	CMD_SET_RRU_MNT_REQ	Command code

Table 6

Step 1B. interrupts or other system's operation troubles when taking place when the maintenance link of RRU and BBU, the technical staff can't issue the request that RRU enters maintenance state that is provided with from the centralized network management center, alarm subsystem at the centralized network management center can be seen the alarms such as RRU maintenance link interruption that BBU reports.In this case, when RRU detects system's operation troubles, send and enter the request of maintenance state to oneself.

The maintenance state request that enters that step 4. centralized network management center or RRU self sends triggers RRU maintenance state process, makes RRU enter maintenance state.

If RRU has received the solicited message from the centralized network management center before, RRU will send the request response to BBU, and BBU sends the request response to the centralized network management center.

Table 7 sends to the response of BBU for RRU, and this response comprises that whether successfully RRU being set enters/withdraw from maintenance of state information.

Parameter name	Span	Parametric description
Parameter name	Span	Parametric description	CMD_ID	CMD_SET_RRU_MNT_RSP	Command code
RESULT	(SUCCESS，FAILURE)	Command execution results: success, failure	CMD_ID	CMD_SET_RRU_MNT_RSP	Command code

Table 7

Table 8 sends to the response at centralized network management center for BBU, and this response comprises that whether successfully RRU being set enters/withdraw from maintenance of state information.

Parameter name	Span	Parametric description
Parameter name	Span	Parametric description	CMD_ID	CMD_SET_RRU_MNT_RSP	Command code
RRU_ID	0～255	The numbering that needs the RRU of maintenance	CMD_ID	CMD_SET_RRU_MNT_RSP	Command code
RRU_ID	0～255	The numbering that needs the RRU of maintenance	RESULT	(SUCCESS，FAILURE)	Command execution results: success, failure

Table 8

Step 5.RRU control panel indicator light makes indicator light enter the maintenance operation state, and the maintenance operation status indicator RRU of indicator light is in maintenance state.The indicator light of sign maintenance state can also can increase new maintenance state indicator light with power supply indicator on the panel (PWR) and/or run indicator (RUN), below both of these case is given an example respectively:

On the RRU panel, make power supply indicator and/or run indicator with the work of maintenance operation state, described maintenance operation state glimmers for using in 1 hertz to the 5 hertz scope frequency wherein, and sign RRU is in maintenance state.

Concrete, the PWR lamp is Chang Liang in normal operating conditions, the RUN lamp in normal operating conditions with the 0.5Hz frequency scintillation, the technical program can adopt with 1Hz, 2Hz, 3Hz, the frequency of 4Hz or 5Hz makes PWR lamp and/or the fast blink of RUN lamp, distinguish normal operating conditions with this, sign RRU is in maintenance state.At the scene of safeguarding, just can confirm by the flicker frequency of observing associated lamp whether RRU has entered maintenance state.

As an inventive point of the present invention, on the RRU panel, increase special maintenance state indicator light (MNT) and identify RRU and whether be in maintenance state, when the MNT lamp was bright, expression RRU was in maintenance state, when the MNT lamp goes out, illustrates that RRU is in non-maintenance state.

The attendant crosses the operating state of observing indicator light on the RRU panel at the scene all, judges the running status of RRU, need to confirm the RRU of maintenance, carries out maintenance work.

For getting rid of the fault of RRU, the attendant needs usually to place under repair of RRU near-end or replacing, and the fault eliminating measure that the attendant takes comprises:

1) link down between RRU and the BBU---check that RRU is connected situation with physical link between the BBU;

2) jumper terminal between RRU and the antenna feeder is not tightened---tighten jumper terminal again;

3) module failures such as the power amplifier of RRU inside, reception amplifier---change RRU.

Step 6. is after finishing maintenance work, and RRU withdraws from maintenance state; RRU control panel indicator light makes panel leds withdraw from the maintenance operation state.Concrete, can adopt following several mode to make RRU withdraw from maintenance state:

1) technical staff at notice centralized network management center issues the request of withdrawing from maintenance state from long-range to RRU, makes RRU withdraw from maintenance state.

2) owing in maintenance process,, or changed RRU, make RRU withdraw from maintenance state automatically because of executive system resets.

3) as an inventive point of the present invention, on panel, increase the maintenance state trigger button, by triggering this button, make RRU withdraw from maintenance state.

Please refer to Fig. 5, be long-distance radio frequency unit one schematic diagram of the present invention.

Long-distance radio frequency unit in distributed base station comprises on the panel 100 power supply indicator 200 and run indicator 300, maintenance state request processing module 500 and panel leds control module 400.

The request that maintenance state request processing module 500 receiving remote radio frequency units enter maintenance state, the maintenance process of triggering long-distance radio frequency unit makes described long-distance radio frequency unit enter maintenance state; Send panel leds and enter the request of maintenance operation state to described panel leds control module 400.Panel leds control module 400 receives after panel leds that described maintenance state request processing module 500 sends enters the request of maintenance operation state, power supply indicator 200 on the control panel and/or run indicator 300 make power supply indicator and/or run indicator on the described panel enter the maintenance operation state.Power supply indicator 200 on the panel and run indicator 300 are by working in the maintenance operation state, and the sign long-distance radio frequency unit is in maintenance state, and described maintenance operation state glimmers for using in 1 hertz to the 5 hertz scope frequency wherein.

Please refer to Fig. 6, be long-distance radio frequency unit two schematic diagrames of the present invention.

Long-distance radio frequency unit in distributed base station comprises maintenance state request processing module 500, panel leds control module 400, maintenance state indicator light 600 and maintenance state control button 700.

The request that maintenance state request processing module 500 receiving remote radio frequency units enter maintenance state, the maintenance process of triggering long-distance radio frequency unit makes described long-distance radio frequency unit enter maintenance state; Send panel leds and enter the request of maintenance operation state to described panel leds control module 400.Panel leds control module 400 receives after panel leds that described maintenance state request processing module 500 sends enters the request of maintenance operation state, and control maintenance state indicator light 600 makes panel leds enter the maintenance operation state; Maintenance state indicator light 600 is by working in the maintenance operation state, and the sign long-distance radio frequency unit is in maintenance state.

Maintenance state control button 700 sends long-distance radio frequency unit and withdraws from the maintenance state request to described maintenance state request processing module 500.Maintenance state request processing module 500 receives described maintenance state control button and sends out the request that 700 long-distance radio frequency units that go out withdraw from maintenance state, makes described long-distance radio frequency unit withdraw from maintenance state; Send the control panel indicator light and withdraw from the request of maintenance operation state to described panel leds control module 400.Panel leds control module 400 receives after control panel indicator light that described maintenance state request processing module sends withdraws from the request of maintenance operation state, and control maintenance state indicator light 600 makes maintenance state indicator light 600 withdraw from the maintenance operation state.

Be understandable that, the long-distance radio frequency unit that maintenance state indicator light 600 and maintenance state control button 700 not necessarily will be provided with panel on, its position situation is as required adjusted.

More than to provided by the present invention in distributed base station the sign remote radio unit (RRU) method and remote radio unit (RRU) be described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims

1. A method for identifying a remote radio frequency unit in a distributed base station, characterized in that, comprising:

1) receiving a request from the remote radio frequency unit to enter the maintenance state, triggering the maintenance process of the remote radio frequency unit, and the remote radio frequency unit enters the maintenance state;

2) The indicator light on the control panel of the remote radio frequency unit enters the maintenance operation state, so that the indicator light on the panel indicates that the remote radio frequency unit is in the maintenance state.

2. The method according to claim 1, wherein the triggering process is: the centralized network management center triggers the maintenance process of the remote radio frequency unit; or the remote radio frequency unit detects a system operation failure and triggers the maintenance process.

3. The method according to claim 2, characterized in that, after the step 2), the remote radio frequency unit exits the maintenance state.

4. The method according to claim 3, wherein the exit process is that the centralized network management center triggers the exit maintenance process of the remote radio frequency unit, and the remote radio frequency unit exits the maintenance state.

5. The method according to claim 3, wherein the exit process is that the remote radio frequency unit executes a system reset during the maintenance process, and automatically exits the maintenance state.

6. The method according to claim 3, wherein the exit process is to trigger a maintenance state control button on the panel to make the remote radio frequency unit exit the maintenance state.

7. The method according to any one of claims 1 to 6, characterized in that, the panel indicator light is a power indicator light and/or a running indicator light, and the maintenance operation state is to use one point within the range of 1 Hz to 5 Hz blinks at the frequency.

8. A remote radio frequency unit in a distributed base station, comprising a power indicator light and a running indicator light on the panel, characterized in that, it also includes a maintenance status request processing module, and a panel indicator light control module:

The maintenance state request processing module is used to receive the request of the remote radio frequency unit to enter the maintenance state, trigger the maintenance process of the remote radio frequency unit, and make the remote radio frequency unit enter the maintenance state; send the request of the panel indicator light to enter the maintenance operation state to the panel for indication light control module;

The panel indicator light control module is used to receive the request that the panel indicator light enters the maintenance operation state sent by the maintenance state request processing module, and control the power indicator light and/or the operation indicator light on the panel to make the power indicator light on the panel and/or the running indicator light enters the maintenance running state;

The power indicator light and the running indicator light on the panel are used to identify that the remote radio frequency unit is in the maintenance state by working in the maintenance operation state, and the maintenance operation state is to flash at a frequency within the range of 1 Hz to 5 Hz.

9. A remote radio frequency unit in a distributed base station, comprising a maintenance status request processing module, a panel indicator light control module and a maintenance status indicator light:

The panel indicator light control module is used to control the maintenance status indicator light so that the maintenance status indicator light enters the maintenance operation status after receiving the request that the panel indicator light enters the maintenance operation state sent by the maintenance status request processing module;

The maintenance status indicator is used to indicate that the remote radio frequency unit is in the maintenance status by working in the maintenance running status.

10. The remote radio frequency unit according to claim 9, further comprising a maintenance status control button:

The maintenance state control button is used to send the remote radio frequency unit to exit the maintenance state request to the maintenance state request processing module;

The maintenance state request processing module is also used to receive the request that the remote radio frequency unit exits the maintenance state sent by the maintenance state control button, so that the remote radio frequency unit exits the maintenance state; sends the request for the control panel indicator light to exit the maintenance operation state to the Panel light control module;

The panel indicator light control module is also used to receive the request from the maintenance state request processing module for the control panel indicator light to exit the maintenance running state, control the maintenance state light indicator, and make the maintenance state light exit the maintenance running state.