CN101272583B - Method for near-end maintaining radio remote module - Google Patents
Method for near-end maintaining radio remote module Download PDFInfo
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- CN101272583B CN101272583B CN2008100743757A CN200810074375A CN101272583B CN 101272583 B CN101272583 B CN 101272583B CN 2008100743757 A CN2008100743757 A CN 2008100743757A CN 200810074375 A CN200810074375 A CN 200810074375A CN 101272583 B CN101272583 B CN 101272583B
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Abstract
The invention discloses a method for maintaining a radio frequency remote module from a proximal end. The process of the method comprises the following steps: a proximal end maintenance station sets up connection with a radio frequency remote unit through a debugging serial port/a net interface and then sends a maintenance command to the radio frequency remote unit; the radio frequency remote unit generates a maintenance result after carrying out maintenance operation according to the maintenance command and then sends the maintenance result to the proximal end maintenance station. The method of the invention directly sends the maintenance command to the RRU by utilizing the proximal end maintenance station to be connected with the debugging serial port/the net interface of the RRU and obtains the maintenance result from the RRU, thus effectively solving the maintenance problem of the proximal end of the RRU. The method is easy to be used on the current base station system and is easy to be realized.
Description
Technical field
The present invention relates to the BTS management maintenance technology, refer to a kind of method of near-end maintaining radio remote module especially.
Background technology
In the base station system of wireless network, single base station generally is divided into Base Band Unit and Remote Radio Unit (RRU, Radio Remote Unit).Base Band Unit mainly comprises base band main control module (NMPT) and interface module etc., is used to accomplish interface transmission, control between base station controller and the said base station, clock synchronization, on/operations such as modulation, demodulation, coding and decoding of downstream signal.Remote Radio Unit can be designed to incorporate, also can be modular, is used to accomplish the processing of intermediate frequency, radiofrequency signal, also is responsible for realizing functions such as duplexer, power amplifier simultaneously.Said integrated design is identical with the logic function that modularized design is accomplished, and be that incorporate Remote Radio Unit only is shown as individual module when management maintenance, and modular Remote Radio Unit is shown as a plurality of functional modules when management maintenance.Each Remote Radio Unit can both provide a debug serial port and a debugging serial interface as self and extraneous communication interface.Because modular Remote Radio Unit comprises RRU main control module (RRI) and a series of RRU submodule, said debug serial port/network interface is provided by the RRU main control module.
In the practical application, the RRU and the distance between the Base Band Unit of base station are distant, reach several kilometers even tens kilometers, so the interface module of Base Band Unit connects the RRU main control module of Remote Radio Unit through optical fiber/cable.
Based on above-mentioned base station architecture mode; The attendant is when safeguarding whole base station, and the Base Band Unit near-end of being everlasting adopts the base station Local Maintenance Console to be connected to the debug serial port/network interface of base band main control module; Send maintenance instruction to the base band main control module; Each component units/module to the base station is carried out attended operation, to find and orientation problem, guarantees the normal operation of base station system.The Base Band Unit near-end is meant the position that is positioned at the Base Band Unit side in the network.
The attended operation that the base station is carried out comprises: contents such as data configuration, status poll, alert analysis, operation of equipment and debugging test.Wherein, data configuration comprises that frequency configuration, gain are provided with etc.; Status poll is meant to be inquired about contents such as equipment running status, veneer temperature, software and hardware version information and mode of operations; Alert analysis comprises contents such as alarm status inquiry, a detailed alarm analysis; Operation of equipment comprises that the designating unit/module to the base station resets, self check etc.; Debugging test comprises that CPRI port loopback test, standing-wave ratio test, transmitting power report etc.
During the near-end maintaining Base Band Unit, it is as shown in Figure 1 that the network of whole base station connects, and base station Local Maintenance Console 101, and signs in to base band main control module 102 and sends maintenance request to base band main control module 102 through debug serial port/network interface physical connection.After base band main control module 102 receives maintenance request, send maintenance instruction to corresponding units/module.Such as, the base band main control module sends maintenance instruction through interface module 103 to RRU main control module 104.RRU main control module 104 is distributed to corresponding RRU submodule 105 with maintenance instruction and carries out, and will safeguard that the result turns back to base band main control module 102 through interface module 103.Finally, base band main control module 102 sends to base station Local Maintenance Console 101 with the result that safeguards of its acquisition, accomplishes whole maintenance process.
Wherein, Base band main control module 102 is through interface module 103; The communication connection of sending the maintenance instruction use to RRU main control module 104 is called the forward maintenance channel, and RRU main control module 104 returns to base band main control module 102 through interface module 103 and safeguards that the communication connection that the result uses is called reverse maintenance channel.
Except accomplishing the maintenance at the Base Band Unit near-end, the attendant also usually carries out on-the-spot investigation and maintenance to the physical location at Remote Radio Unit place, realizes that at the RRU near-end method of safeguarding has following several kinds:
Method one: use RRU to go up the test lamp and/or the testing button that are provided with and directly carry out simple near-end maintaining.Go up the demonstration of set test lamp through near-end observation RRU and judge whether normally operation of base station system; Perhaps go up the testing button startup simple test that is provided with and come orientation problem through RRU; Start the standing-wave ratio test, the ruuning situation of inspection antenna feed system such as pressing the standing-wave ratio testing button.
This methodological function is single, only indicates the details that can not obtain base station unit/module according to simple led status or test, only can judge fault when breaking down, and but can not further instruct troubleshooting.
Method two: the function of using long-range connection service standard agreement (Telnet) to provide signs in to RRU, directly uses serial port command that RRU is carried out attended operation.
This method is had relatively high expectations to attendant's technical ability, and the ordinary person can't realize safeguarding through this method, and poor stability, occurs risky operation easily and brings bigger technological hidden danger to base station system.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method of near-end maintaining radio remote module, carries out attended operation and positioning problems at the RRU near-end easily.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
A kind of method of near-end maintaining radio remote module is characterized in that, this method may further comprise the steps:
Local Maintenance Console is set up socket Socket through debug serial port and/or network interface with the RRU main control module in the radio frequency remote unit RRU and is connected, and sends maintenance instruction to the RRU main control module;
The RRU main control module sends to Base Band Unit with the maintenance instruction that receives through reverse maintenance channel;
Base band main control module in the Base Band Unit returns and safeguards that the result arrives the RRU main control module after carrying out attended operation according to maintenance instruction;
The RRU main control module according to fixed format takes out message content after receiving and safeguarding the result, connects through Socket to send to the base station Local Maintenance Console.
RRU main control module Remote Radio Unit is before Base Band Unit sends maintenance instruction, and this method further comprises: Remote Radio Unit is packaged into set form with the maintenance instruction that receives.
Preferably, said set form comprises: reverse maintenance channel type of message, message-length and base station Local Maintenance Console message content.
A kind of method of near-end maintaining radio remote module is characterized in that, this method may further comprise the steps:
The radio frequency remote unit RRU Local Maintenance Console is set up socket Socket through debug serial port or network interface with the RRU main control module among the RRU and is connected; The link layer interface message form that sends to the RRU main control module according to the base-station interface module in the Base Band Unit generates accent survey order, and sends to the RRU main control module;
After the RRU main control module receives Remote Radio Unit accent survey order; Directly transfer the survey order to be distributed to corresponding Remote Radio Unit submodule Remote Radio Unit and handle, the Remote Radio Unit submodule will be handled the result that safeguards who obtains and deliver to the RRU main control module;
The RRU main control module is exported to the RRU Local Maintenance Console safeguarding that the result connects through Socket.
This method further comprises: after RRU Local Maintenance Console and Remote Radio Unit connect,
Remote Radio Unit sends to transfer to survey to Base Band Unit and starts indication, and Base Band Unit starts the debug log record of said Remote Radio Unit;
Radio frequency remote unit RRU will transfer to survey to order to be sent to Base Band Unit after receiving that order surveyed in accent that Local Maintenance Console sends, preserve into debug log; And
Receive that the Remote Radio Unit submodule sends safeguard the result after, will safeguard that the result is sent to Base Band Unit, preserve into debug log.
Visible by technique scheme; The method of this near-end maintaining radio remote module of the present invention; Through using Local Maintenance Console to connect debug serial port/network interface of RRU, directly send maintenance instruction, and obtain to safeguard the result from RRU to RRU; Thereby solve the near-end maintaining problem of RRU effectively, make RRU can support various maintenance needs.And this method is easy to be applied on the existing base station system, realizes simple.
Description of drawings
Fig. 1 is the base station connection layout of safeguarding in the realization of Base Band Unit near-end in the prior art;
Fig. 2 is the sketch map that is connected of base station Local Maintenance Console and RRU in the first embodiment of the invention;
Fig. 3 is the method flow diagram that the base station Local Maintenance Console is realized maintenance in the first embodiment of the invention at the RRU near-end;
Fig. 4 is the sketch map of maintenance instruction encapsulation format in the first embodiment of the invention;
Fig. 5 is the sketch map that is connected of RRU Local Maintenance Console and RRU in the second embodiment of the invention;
Fig. 6 is the method flow diagram that the RRU Local Maintenance Console is realized maintenance in the second embodiment of the invention at the RRU near-end;
Fig. 7 be in the second embodiment of the invention base band main control module to the monitoring flow chart of RRU near-end maintaining.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, to further explain of the present invention.
Two following embodiment are example with the modular radio frequency extension unit all, and the detailed process that realizes maintenance at the RRU near-end is described.Integrated Remote Radio Unit realizes that the process of safeguarding is identical therewith, adds description no longer in addition.
Embodiment one,
In the present embodiment, the annexation of base station Local Maintenance Console and RRU is as shown in Figure 2.Based on connection shown in Figure 2, the base station Local Maintenance Console realizes that at the RRU near-end method of safeguarding is as shown in Figure 3, specifically may further comprise the steps:
Said Socket connection is meant and utilizes Socket between base station Local Maintenance Console and RRU main control module, to establish a communications link, so that between the two, send data.
In this step, realize that the method for login is identical with prior art.
Said maintenance instruction can be that order surveyed in the accent of RRU, or the operational order that other units/modules of base station is sent.
After step 304, RRU main control module receive maintenance instruction, maintenance instruction is forwarded to the base band main control module through reverse maintenance channel.
Owing to the base station Local Maintenance Console is to design for the base band main control module of operating Base Band Unit; So its instruction RRU main control module that sends can't be resolved; Can only connect the instruction that will receive through the interprocess communication (IPC) of inside of base station module and be transmitted to the processing of base band main control module, the RRU main control module is following to the repeating process of maintenance instruction:
After A, RRU main control module receive the maintenance instruction of base station Local Maintenance Console from debug serial port/network interface, encapsulation according to fixed format.
Such as, the RRU main control module is packaged into form shown in Figure 4 with maintenance instruction, and this form comprises reverse maintenance channel type of message (MsgType), message-length (MsgLength) and base station Local Maintenance Console message content (MsgContent) three parts.
Message after B, RRU main control module will encapsulate through with the interface module of Base Band Unit between IPC be connected and send to Base Band Unit.What said IPC connected employing is common public radio interface (CPRI) agreement.
After C, interface module receive message, message is sent to the base band main control module through the IPC connection.What said IPC connected employing is Cell Bus agreement.
In this step; The process that the base band main control module is carried out attended operation according to maintenance instruction is identical with prior art; Such as: if this maintenance instruction is that order surveyed in the accent of RRU, the base band main control module will send above-mentioned instruction to the RRU main control module, make RRU carry out attended operation.
The attended operation that adopts this method to realize at the RRU near-end has the following advantages: on the one hand, can directly use the base station Local Maintenance Console, and need not to develop special Local Maintenance Console RRU operated; On the other hand, directly be connected the base band main control module with the base station Local Maintenance Console through debug serial port/network interface and safeguard and compare that this method can realize same maintenance function.
Embodiment two,
In the present embodiment, the attendant uses the RRU Local Maintenance Console directly to login RRU at near-end, is sent to RRU by RRU Local Maintenance Console ABB main control module and transfer to survey order, and resolve the result that safeguards that RRU returns, and transfers brake to realize all RRU.
The annexation of this method is as shown in Figure 5, and said RRU main control module comprises transferring surveys module (D_Stub) and RRU link layer module.The Socket that transfers the survey module to be used to set up/break off with the RRU Local Maintenance Console is connected, and the RRU Local Maintenance Console of logining RRU is carried out proof of identity, and order is surveyed in the accent that the RRU Local Maintenance Console sends deliver to the RRU link layer module; The RRU link layer module connects the interface module of RRU submodule and Base Band Unit, will transfer to survey to order and deliver to the processing of RRU submodule, and be responsible for handling the message of sending from interface module.
Based on connection shown in Figure 5, the RRU Local Maintenance Console realizes that at the RRU near-end method of safeguarding is as shown in Figure 6, specifically may further comprise the steps:
Said RRU Local Maintenance Console can provide the I similar with the base station Local Maintenance Console for the attendant, reaches the purpose that input is easy, output is clear and definite.
This step is surveyed module by the accent in the RRU main control module and is accomplished.When RRU carried out reset operation, said RRU test pattern still can the preceding state that is provided with of hold reset.
The method of above-mentioned simulation is: the link layer interface message form that the RRU Local Maintenance Console sends to the RRU main control module according to the base-station interface module generates to transfer to survey to order and sends.
After step 604, RRU main control module receive and transfer the survey order, will transfer the survey order to be issued to corresponding RRU submodule and handle.
Because said maintenance instruction is identical with the normal accent survey order that the base band main control module sends, the RRU main control module will be resolved and the inside distribution according to the instruction of normal process flow performing.
The result that safeguards that step 605, RRU submodule will generate sends to the RRU main control module, and the RRU main control module is exported to the RRU Local Maintenance Console safeguarding that the result connects through Socket.
If the RRU main control module receives accent from debug serial port/network interface and surveys order in step 604, will safeguard in the step 605 that then the result returns the RRU Local Maintenance Console from debug serial port/network interface; If be to survey order in the step 604, will safeguard in the step 605 that then the result returns base band main control module and RRU Local Maintenance Console simultaneously from the accent that the baseband interface module sends over.
Working in RRU when transferring the survey pattern, the RRU main control module can send a RRU Local Maintenance Console of giving in addition with the message that RRU reports the base band main control module.
It can be the normal disconnection behind the EO that above-mentioned disconnection Socket connects, and also can be withdrawing from unusually of RRU Local Maintenance Console execution.
In order to guarantee to use the fail safe of this method, in the process of carrying out near-end maintaining, add the monitoring of base band main control module, specifically realize as shown in Figure 7ly, may further comprise the steps:
RRU link layer module in step 702, the RRU main control module is in transmission/reception during via the message of D_Stub module; The identical message content is transmitted to the base band main control module through interface module; The base band main control module is that said RRU preserves all message via the transmitting-receiving of D_Stub module, as the debug log of this RRU.
Said accent is surveyed alarm startup/end record RRU near-end and is transferred start-up time, concluding time and the end reason of surveying.Wherein, finish reason and be used to show improper withdrawing from or operational circumstances such as normal termination.
The base band main control module not only can write down debug log, can also send instruction the RRU test pattern is set, or cancellation RRU transfers the survey process, and RRU carries out corresponding operating after receiving the instruction of base band main control module.
Visible by the above embodiments; The method of this near-end maintaining radio remote module of the present invention connects debug serial port/network interface of RRU through using Local Maintenance Console, directly sends maintenance instruction to RRU; And obtain to safeguard the result from RRU; Thereby solve the near-end maintaining problem of RRU effectively, this method is easy to be applied on the existing base station system, realizes simple.
Claims (5)
1. the method for a near-end maintaining radio remote unit is characterized in that, this method may further comprise the steps:
Local Maintenance Console is set up socket Socket through debug serial port and/or network interface with the RRU main control module in the radio frequency remote unit RRU and is connected, and sends maintenance instruction to the RRU main control module;
The RRU main control module sends to Base Band Unit with the maintenance instruction that receives through reverse maintenance channel;
Base band main control module in the Base Band Unit returns and safeguards that the result arrives the RRU main control module after carrying out attended operation according to maintenance instruction;
The RRU main control module according to fixed format takes out message content after receiving and safeguarding the result, connects through Socket to send to the base station Local Maintenance Console.
2. method according to claim 1 is characterized in that, the RRU main control module is before Base Band Unit sends maintenance instruction, and this method further comprises: the RRU main control module is packaged into set form with the maintenance instruction that receives.
3. method according to claim 2 is characterized in that, said set form comprises: reverse maintenance channel type of message, message-length and base station Local Maintenance Console message content.
4. the method for a near-end maintaining radio remote unit is characterized in that, this method may further comprise the steps:
The radio frequency remote unit RRU Local Maintenance Console is set up socket Socket through debug serial port or network interface with the RRU main control module among the RRU and is connected; The link layer interface message form that sends to the RRU main control module according to the base-station interface module in the Base Band Unit generates accent survey order, and sends to the RRU main control module;
After the RRU main control module receives Remote Radio Unit accent survey order; Directly transfer the survey order to be distributed to corresponding Remote Radio Unit submodule Remote Radio Unit and handle, the Remote Radio Unit submodule will be handled the result that safeguards who obtains and deliver to the RRU main control module;
The RRU main control module is exported to the RRU Local Maintenance Console safeguarding that the result connects through Socket.
5. method according to claim 4; It is characterized in that; This method further comprises: after RRU Local Maintenance Console and Remote Radio Unit connected, Remote Radio Unit sent to transfer to survey to Base Band Unit and starts indication, and Base Band Unit starts the debug log record of said Remote Radio Unit;
Radio frequency remote unit RRU will transfer to survey to order to be sent to Base Band Unit after receiving that order surveyed in accent that Local Maintenance Console sends, preserve into debug log; And
Receive that the Remote Radio Unit submodule sends safeguard the result after, will safeguard that the result is sent to Base Band Unit, preserve into debug log.
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| CN2008100743757A CN101272583B (en) | 2005-06-30 | 2005-06-30 | Method for near-end maintaining radio remote module |
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| CN2008100743757A CN101272583B (en) | 2005-06-30 | 2005-06-30 | Method for near-end maintaining radio remote module |
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| CNB2005100816148A Division CN100450249C (en) | 2005-06-30 | 2005-06-30 | Near-end maintenance radio frequency remote module method |
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| CN101272583A CN101272583A (en) | 2008-09-24 |
| CN101272583B true CN101272583B (en) | 2012-01-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014155220A1 (en) * | 2013-03-28 | 2014-10-02 | Telefonaktiebolaget L M Ericsson (Publ) | Technique for troubleshooting remote cellular base station radios from the network management platform using local wireless hotspot at the radio site |
| WO2018169671A1 (en) * | 2017-02-27 | 2018-09-20 | Mavenir Networks, Inc. | System and method for network stranded remote radio installation |
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|---|---|---|---|---|
| CN102238599A (en) * | 2010-05-06 | 2011-11-09 | 中兴通讯股份有限公司 | Radio remote unit management device, system and method |
| CN102802170B (en) * | 2011-05-26 | 2017-03-15 | 中兴通讯股份有限公司 | Obtain method, device and the base station of ethernet data frame |
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| CN103974308A (en) * | 2013-02-01 | 2014-08-06 | 中兴通讯股份有限公司 | Base station maintenance equipment, method, device and system, mobile terminal and base station |
| US9491162B2 (en) | 2013-03-28 | 2016-11-08 | Telefonaktiebolaget L M Ericsson (Publ) | Technique for controlling loss and theft of remote radio equipment in a cellular ad hoc network |
| US9191830B2 (en) | 2013-03-28 | 2015-11-17 | Telefonaktiebolaget L M Ericsson (Publ) | Local wireless connectivity for radio equipment of a base station in a cellular communications network |
| CN104244298A (en) * | 2013-06-14 | 2014-12-24 | 中兴通讯股份有限公司 | Base station outdoor equipment monitoring method and device |
| CN106487450A (en) * | 2015-08-24 | 2017-03-08 | 中兴通讯股份有限公司 | A kind of Remote Radio Unit method to set up and Remote Radio Unit |
| CN105099792A (en) * | 2015-09-11 | 2015-11-25 | 福建联拓科技有限公司 | Embedded network management communication protocol based on ARC digital intercommunication system equipment |
| CN107786261A (en) * | 2016-08-24 | 2018-03-09 | 中兴通讯股份有限公司 | RRU hardware checks triggering method and RRU hardware check systems |
| CN111488229B (en) * | 2019-01-29 | 2023-10-13 | 上海原动力通信科技有限公司 | Aging processing method and device for RRU (remote radio unit) of base station |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1281322A (en) * | 1999-07-19 | 2001-01-24 | 现代电子产业株式会社 | Receiver transmitter set base station of digital mobile remote communication system |
-
2005
- 2005-06-30 CN CN2008100743757A patent/CN101272583B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1281322A (en) * | 1999-07-19 | 2001-01-24 | 现代电子产业株式会社 | Receiver transmitter set base station of digital mobile remote communication system |
Non-Patent Citations (1)
| Title |
|---|
| 唐勇,孙小菡,杨春,张明德,毛庆和,张祖舜.智能型移动通信直放站监控单元的研制.测控技术.2001,20(3),59-61. * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014155220A1 (en) * | 2013-03-28 | 2014-10-02 | Telefonaktiebolaget L M Ericsson (Publ) | Technique for troubleshooting remote cellular base station radios from the network management platform using local wireless hotspot at the radio site |
| WO2018169671A1 (en) * | 2017-02-27 | 2018-09-20 | Mavenir Networks, Inc. | System and method for network stranded remote radio installation |
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