CN1128558C - Base station control maintenance module backup system - Google Patents
Base station control maintenance module backup system Download PDFInfo
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- CN1128558C CN1128558C CN 00125620 CN00125620A CN1128558C CN 1128558 C CN1128558 C CN 1128558C CN 00125620 CN00125620 CN 00125620 CN 00125620 A CN00125620 A CN 00125620A CN 1128558 C CN1128558 C CN 1128558C
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- 238000012360 testing method Methods 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 6
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- 238000010586 diagram Methods 0.000 description 9
- 230000001360 synchronised effect Effects 0.000 description 8
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Abstract
The present invention relates to a base station control maintenance module backup system which comprises two base station control maintenance modules (CMM0, CMM1) connected with an Abis interface and a data clock interface. The present invention is characterized in that a backup control device which is connected between a first module and a second module has a duplex machine warm backup function, clock and frame number synchronization and configuration data synchronization are kept between a main CMM module and a backup CMM module through a main interface unit and a backup interface unit. When a main board has a fault, the main board can be switched to a backup board automatically, the switching of the main module and the backup module does not cut a service and signaling link, and the reliability of a base station system is improved greatly.
Description
Technical field:
The present invention relates to mobile communication technology, specifically is a kind of base station control maintenance module backup system.
Background technology:
Base station control maintenance module CMM is the critical function module of base transceiver station BTS, it finishes the generation of Abis interface (Abis is the interface of base station controller and base station transceiver interstation, is mainly used between and transmits control signaling and the business datum) control that continues, clock and frame number and net is synchronous, the software and the functions such as parameter configuration, base station alarm collection and processing of transceiver.If base station control maintenance module breaks down, whole base station system is cisco unity malfunction all, so the reliability requirement of control maintenance module is than higher.And existing base station control maintenance module does not have backup functionality more or have only the cold standby function.Cold standby system as shown in Figure 6 connects contention circuit, operating state index signal and resets to partitioned signal between active and standby CMM.The synchronization mechanism that does not have data, frame number and time between active and standby.When mainboard moved, slave board monitored the operating state of mainboard, if the mainboard operation irregularity, slave board Reset mainboard after if it breaks down, needs to carry out data sync and base station initialization with base station controller BSC again, at this moment the communicating interrupt of base station and mobile phone.
In order to improve the reliability of base station system, adopting the base station control maintenance module CMM with two-node cluster hot backup function is one of desirable measure.The United States Patent (USP) United StatesPatent 5 in the industrial control field for example, 777,874 propose a kind of standby system of programmable controller, between two controller frames, connect high speed communications link and one group of state control signal, realize the program of programmable controller and the backup of I/O data.But because the occasion difference of using, the formula of the replying synchronization policy that this patent adopts is not suitable for the synchronous requirement fast of CMM frame number.This patent does not have the function of main and standby competition, and frame is mainly use state all the time when powering on simultaneously, is unfavorable for the raising of service life of equipment, and consider main with director demon run fly or the power failure situation under main/standby switching method.
Summary of the invention:
The technical problem to be solved in the present invention is to overcome the above-mentioned deficiency of prior art, and a kind of base station control maintenance module backup system with two-node cluster hot backup function is provided.This standby system can be finished competition, switching, data sync backup, clock and frame number backed up in synchronization between the active and standby control maintenance module.
Base station control maintenance module backup system of the present invention, comprise the first base station control maintenance module CMM0 and the second base station control maintenance module CMM1, described two module CM M0, CMM1 all are connected in Abis interface and data clock Data ﹠amp by its Base station Interface Unit; The clk interface;
It is characterized in that comprising:
A backup control device, this device are connected between described first, second base station control maintenance module, are used for both and compete active or standby state, data sync and clock Phase synchronization;
Described backup control device further comprises the active and standby interface unit that is separately positioned on described first, second base station control maintenance module, described active and standby interface unit is by the control of the Main Control Unit on the module separately, as the Abis interface and the data clock Data ﹠amp that are in main base station control maintenance module with state; When the clk interface is connected, be in the Abis interface and the data clock Data ﹠amp of standby base station control maintenance module; The clk interface will disconnect, and described two modules keep realizing Hot Spare synchronously by described active and standby interface unit.
Base station control maintenance module backup system of the present invention has the two-node cluster hot backup function, by active and standby interface unit, make between the active and standby CMM module keep configuration data synchronously, clock and frame number be synchronous.Like this, standby base station control maintenance module has kept and Abis interface and data clock Data ﹠amp; The clk interface synchronously.Can automatically switch to slave board when mainboard breaks down, main backup module switches the chain rupture that can not cause professional and signaling link, has improved the reliability of base station system greatly.
Description of drawings:
Below in conjunction with accompanying drawing base station control maintenance module backup system of the present invention is further specified.
Fig. 1 is the position block diagram of control maintenance module backup system in base station system;
Fig. 2 is the theory diagram of control maintenance module;
Fig. 3 is a standby system theory diagram of the present invention;
Fig. 4 is the block diagram of its active and standby interface unit;
Fig. 5 is main and standby competition/commutation circuit schematic diagram;
Fig. 6 is the theory diagram of traditional cold standby system.
Embodiment
Fig. 1 illustrates the position of control maintenance module CMM in base station system.CMM links to each other with base station controller BSC by Abis interface, finishes the initialization of Abis interface and the configuration that continues; By data clock Data ﹠amp; The clk interface links to each other with transceiver module TRM, finishes software download, the parameter configuration to TRM and system clock is provided.The control maintenance module is made up of active and standby two module CM M0, CMM1, and two control maintenance modules are inserted on the same backboard, respectively by independently power module power supply.As main Abis interface and Data ﹠amp with CMM; When the clk interface is connected, the Abis interface of standby CMM and Data ﹠amp; The clk interface disconnects.
Fig. 2 is the theory diagram of control maintenance module.Base station control maintenance module CMM comprises Main Control Unit, Base station Interface Unit, clock unit, Environment Monitor Unit, MMI interface unit, power subsystem and active and standby interface unit.
Base station control maintenance module links to each other with base station controller BSC by Abis interface, links to each other with transceiver module TRM by the BS interface.The Abis interface relay array is by the active and standby State Control of using.Relay was connected when CMM was in the master with state, and relay disconnects during stand-by state.
Line interface extracts synchronised clock CLK-ref from code stream, clock unit as the reference clock, produces system clock CLK with CLK-ref, is sent to each TRM by the BS interface.
Main Control Unit receives configuration information from Abis interface, to the crosspoint configuration that continues.Crosspoint by the BS interface with the exchanges data of Abis interface to each TRM.
Main Control Unit is controlled equipment such as fan by the warning information of Environment Monitor Unit collection site.Active and standby interface unit is used for both and competes active or standby state, data sync and clock phase synchronization.CMM can connect local PC by the MMI interface unit, realizes the local operation maintenance function.
As shown in Figure 3, standby system comprises first base station control maintenance module CMM0, second base station control maintenance module CMM1, and both all link to each other with base station controller BSC by Abis interface, by data clock Data ﹠amp; The clk interface links to each other with transceiver module TRM.
The described first module CM M0 is provided with an active and standby interface unit by Main Control Unit control, and the second module CM M1 also is provided with another the active and standby interface unit by Main Control Unit control.Described each active and standby interface unit contains: competition commutation circuit, operating state indicating member, serial communication interface and clock generating and phasing unit.
The interconnection of described two competition commutation circuits is used for determining primary, spare CMM state, finishes active and standby switching with state; Described two operating state indicating members interconnect, and are used to indicate the operating state of this plate, monitor the operating state to plate; The interconnection of described dual serial communication port, be used to realize configuration data and clock frame number between standby plate and the main board synchronously; Described two clock generating and phasing cell interconnection are used for the Phase synchronization of clock between two base station control maintenance modules.
Fig. 4 is the block diagram of active and standby interface unit.Active and standby interface unit is made up of competition commutation circuit, operating state indicating member, clock phase correcting unit and serial communication interface, and the holding wire on two CMM connects by backboard.
This plate of LOCAL_STATE activestandby state signal and MATE_STATE are used for main and standby competition and switching to plate activestandby state signal.
This plate of LOCAL_WORKSTATE working state signal and MATE_WORKSTATE are to the operating state of plate working state signal indication CMM.In the CMM running state by LOCAL_WORKSTATE to plate is sent square-wave signal, indicate this plate operating state.Hardware circuit detects LOCAL_WORKSTATE and MATE_WORKSTATE.If LOCAL_WORKSTATE loses, show this plate software anomaly; If MATE_WORKSTATE loses, show the plate operation irregularity.This plate index signal LOCAL_EXIT on the throne and to plate index signal MATE_EXIT on the throne is used for judging whether plate is inserted.
High speed serialization link TX_DATA and RX_DATA, it is synchronous to adopt the HDLC link protocol to be used for master/slave data.When main CMM receives BSC downloaded software or configuration data, the message that receives is sent to CMM fully by TX_DATA.Main CMM sends response message to BSC after receiving the response message that is equipped with CMM from RX_DATA, and the next frame data are downloaded in request.Like this, software and the configuration data from CMM is consistent with main CMM all the time.
Main CMM sends synchronised clock by LOCAL_CLKSYN to being equipped with CMM.The clock that is equipped with the generation of CMM clock unit is behind phasing, and the synchronised clock MATE_CLKSYN that sends with mainboard keeps Phase synchronization.The rising edge of the frame clock FCLK that clock unit produces triggers and interrupts, the sequence number of interrupt service routine accumulative total frame clock, i.e. frame number.In order to keep the frame number unanimity of active and standby CMM, adopt high speed serialization link TX_FN and RX_FN, send the frame number of mainboard accumulative total to slave board by mainboard.Slave board is reference with the mainboard frame number that receives, and the frame number of fair copy plate clock unit accumulative total guarantees that the frame number and the mainboard of slave board accumulative total is consistent.Broadcast mode is adopted in the transmission of frame number, and transmission rate is enough high, guarantees that slave board can receive the frame number of mainboard transmission before frame number interrupts arriving next time.If the frame number CRC check that slave board receives is made mistakes, abandon frame number, do not require the frame number repeating transmission.
Fig. 5 is main and standby competition/commutation circuit schematic diagram.Competition commutation circuit on the described first base station control maintenance module CMM0, two input nand gates 1 by described first base station control maintenance module, output be connected to described first base station control maintenance module two input nand gates, 1 input described first base station control maintenance module three the input with the door 2, and forms by the square wave testing circuit 3 of this plate operating state index signal LOCAL_WORKSTATE control, three inputs of described first base station control maintenance module are connected its power supply overvoltage/undervoltage alarm signal PWR_ALARM respectively with three inputs of 2, square wave testing circuit 3 outputs and software control port SOFT_CTRL.
Competition commutation circuit on the described second base station control maintenance module CMM1, two input nand gates 1 ' by described second base station control maintenance module, output be connected to described second base station control maintenance module two input nand gates, 1 ' input described second base station control maintenance module three the input with the door 2 ', and forms by the square wave testing circuit 3 ' of this plate operating state index signal LOCAL_WORKSTATE control, three inputs of described second base station control maintenance module are connected its power supply overvoltage/undervoltage alarm signal PWR_ALARM respectively with three inputs of 2 ', square wave testing circuit 3 ' output and software control port SOFT_CTRL.
The output signal LOCAL_STATE of two input nand gates 1 of described first base station control maintenance module is connected in two input nand gates, 1 ' another input of described second base station control maintenance module, and the output signal LOCAL_STATE of described second base station control maintenance module, two input nand gates 1 ' is connected in two input nand gates, 1 another input of described first base station control maintenance module.
Three input signals of competition/commutation circuit are power supply overvoltage/undervoltage alarm PWR_ALARM, the indication of this plate operating state LOCAL_WORKSTATE, software control port SOFT_CTRL.Output signal is this plate operating state LOCAL_STATE.When LOCAL_STATE was low, CMM was operated in the mainboard state; Otherwise, be slave board.When alarm appearred in power supply, PWR_ALARM was low.LOCAL_WORKSTATE is the square-wave signal that CMM software produces.When unusual or program fleet appearred in software, LOCAL_WORKSTATE disappeared, and this moment, the square wave testing circuit was output as low.
The main and standby competition process is as follows: during the CMM power-up initializing, PWR_ALARM is high, and the square wave testing circuit is output as height, and SOFT_CTRL is output as low, and then this plate activestandby state line LOCAL_STATE is high, promptly is operated in the slave board state.After the CMM self check was passed through, software was put height with SOFT_CTRL, participated in main and standby competition.It is low at first SOFT_CTRL being put high CMMLOCAL_STATE, and promptly operating state is a mainboard; Another piece CMM plate is because the MATE_STATE signal is low, so regardless of the state of SOFT_CTRL, LOCAL_STATE is low, promptly operating state is a slave board.
Active and standby handoff procedure is as follows: after the CMM self check was passed through, the software control end SOFT_CTRL of active and standby CMM was high.At first SOFT_CTRL being put high CMM is mainboard, and another piece is a slave board.In order to guarantee the reliability of active and standby switching, active and standby switching can only be initiated by mainboard.The situation that triggers active and standby switching has three kinds: 1. mainboard program fleet, LOCAL_WORKSTATE loses, then the square wave testing circuit be output as low, master/slave switchover; 2. the alarm of power supply overvoltage/undervoltage occurs, PWR_ALARM is low, then master/slave switchover; 3. when the mainboard software detection arrives other operation irregularities, judge by MATE_WORKSTATE and MATE_EXIST whether slave board is working properly.If slave board is working properly, mainboard SOFT_CTRL is put low, master/slave switchover.Owing under the state that softwares such as program fleet and power failure can't be inquired about, can finish automatic switchover, improve the reliability of switching by hardware.
By active and standby interface unit, keep between the active and standby CMM module configuration data synchronously, clock and frame number be synchronous, can automatically switch to slave board when mainboard breaks down, and improved the reliability of base station system greatly.
Claims (3)
1, a kind of base station control maintenance module backup system, comprise first base station control maintenance module (CMM0) and second base station control maintenance module (CMM1), described two modules (CMM0, CMM1) all are connected in Abis interface and data clock (Data ﹠amp by its Base station Interface Unit; Clk) interface;
It is characterized in that comprising:
A backup control device, this device are connected between described first, second base station control maintenance module, are used for both and compete active or standby state, data sync and clock Phase synchronization;
Described backup control device further comprises the active and standby interface unit that is separately positioned on described first, second base station control maintenance module, described active and standby interface unit is by the control of the Main Control Unit on the module separately, as the Abis interface and data clock (the Data ﹠amp that are in main base station control maintenance module with state; When clk) interface is connected, be in the Abis interface and data clock (the Data ﹠amp of standby base station control maintenance module; Clk) interface will disconnect, and described first, second base station control maintenance module keeps realizing Hot Spare synchronously by described active and standby interface unit.
2, base station control maintenance module backup system according to claim 1, it is characterized in that: described active and standby interface unit comprises competition commutation circuit, operating state indicating member, serial communication interface and clock generating and phasing unit, and they all are connected in a control unit; The competition commutation circuit interconnection of described first base station control maintenance module and second base station control maintenance module, the interconnection of operating state indicating member, serial communication interface interconnection, clock generating and phasing cell interconnection.
3, base station control maintenance module backup system according to claim 2, it is characterized in that: the competition commutation circuit on described first base station control maintenance module (CMM0), two input nand gates (1) by described first base station control maintenance module, output is connected to three inputs of described first base station control maintenance module of two input nand gates (1) input of described first base station control maintenance module to be formed with door (2) and by the square wave testing circuit (3) of described module operating state index signal (LOCAL_WORKSTATE) control, and three inputs of described first base station control maintenance module are connected power supply overvoltage/undervoltage alarm signal (PWR_ALARM) respectively with three inputs of (2), square wave testing circuit (3) output and software control port (SOFT_CTRL);
Competition commutation circuit on described second base station control maintenance module (CMM1), two input nand gates (1 ') by described second base station control maintenance module, output is connected to three inputs of described second base station control maintenance module of two input nand gate (1 ') inputs of described second base station control maintenance module to be formed with door (2 ') and by the square wave testing circuit (3 ') of described module operating state index signal (LOCAL_WORKSTATE) control, and three inputs of described second base station control maintenance module are connected power supply overvoltage/undervoltage alarm signal (PWR_ALARM) respectively with three inputs of (2 '), square wave testing circuit (3 ') output and software control port (SOFT_CTRL);
The output signal (LOCAL_STATE) of two input nand gates (1) of described first base station control maintenance module is connected in two another inputs of input nand gate (1 ') of described second base station control maintenance module, and the output signal (LOCAL_STATE) of two input nand gates (1 ') of described second base station control maintenance module is connected in another input of two input nand gates (1) of described first base station control maintenance module.
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| CN 00125620 CN1128558C (en) | 2000-10-01 | 2000-10-01 | Base station control maintenance module backup system |
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| CN 00125620 CN1128558C (en) | 2000-10-01 | 2000-10-01 | Base station control maintenance module backup system |
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| CN1346220A CN1346220A (en) | 2002-04-24 |
| CN1128558C true CN1128558C (en) | 2003-11-19 |
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100416522C (en) * | 2002-09-25 | 2008-09-03 | 华为技术有限公司 | Method for hot backup employing double machine and terminal device access system thereof |
| CN1307814C (en) * | 2002-11-23 | 2007-03-28 | 中兴通讯股份有限公司 | Business mutual aid method for hierarchical communication system |
| CN1310437C (en) * | 2002-12-04 | 2007-04-11 | 华为技术有限公司 | Expandable two-dimensional array arrangement and method for realizing route system hot backup using same |
| CN100370701C (en) * | 2004-07-23 | 2008-02-20 | 华为技术有限公司 | Main standby switch control circuit and control method thereof |
| CN100362761C (en) * | 2004-09-28 | 2008-01-16 | 华为技术有限公司 | Method for realizing single board switching |
| CN1878012A (en) * | 2005-06-08 | 2006-12-13 | 华为技术有限公司 | Method and device for improving reliability of radio reception device |
| CN100463444C (en) * | 2005-07-20 | 2009-02-18 | 中兴通讯股份有限公司 | Method for main and spare synchronization of call data |
| CN100433653C (en) * | 2006-05-23 | 2008-11-12 | 中兴通讯股份有限公司 | Network pipe abnormal state user interface restoring method |
| CN101247573B (en) * | 2007-02-16 | 2011-06-15 | 大唐移动通信设备有限公司 | Clock and on-condition maintenance monitoring panel and master-slave switching method |
| CN101556473B (en) * | 2008-04-10 | 2011-06-15 | 卡斯柯信号有限公司 | Control method of double-machine heat preparation switching control device |
| CN103974304A (en) * | 2013-01-25 | 2014-08-06 | 中航物联技术（北京）有限公司 | WSN wireless base station with hot-standby function |
| CN104678817B (en) * | 2013-11-28 | 2017-11-03 | 中国航空工业集团公司航空动力控制系统研究所 | The active and standby logic switching circuit of aero-engine digital electronic controller binary channels |
| CN110531678B (en) * | 2019-09-16 | 2020-10-02 | 珠海格力电器股份有限公司 | Automatic control system and operation and maintenance method thereof |
| CN111082511B (en) * | 2019-12-31 | 2023-07-21 | 深圳市核达中远通电源技术股份有限公司 | Main and standby automatic competition and quick switching power supply structure and implementation method |
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