CN1418023A - Back-up method and device for base station controller in radio access network - Google Patents
Back-up method and device for base station controller in radio access network Download PDFInfo
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- CN1418023A CN1418023A CN 01134497 CN01134497A CN1418023A CN 1418023 A CN1418023 A CN 1418023A CN 01134497 CN01134497 CN 01134497 CN 01134497 A CN01134497 A CN 01134497A CN 1418023 A CN1418023 A CN 1418023A
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Abstract
The back-up method for base station controller includes: detecting base station fault, treating fault and determining whether to switch base statino controller; selecting back-up base station controller if necessary; down distributing static data configuration of the taken over station to the back-up base station controller and distributing information of establishing communication with new base station controller to the taken over base station in the switching control server; connecting the taken over base station and the new base station controller and restoring business. One switching service controller is also disclosed. The present invention is used in controlling some other base station controller to take over the faulted base station controller and has short operation time and less malfunction.
Description
Technical field
The present invention relates to mobile communication system, relate in particular to a kind of backup implementation method of the base station controller that improves wireless access network reliability in the mobile communication system and realize the device of this method.
Background technology
In the wireless access network of existing mobile communication system, mainly comprise two kinds of network elements of base station and base station controller (BSC).Wherein, the base station directly provides the wireless access channel for inserting the wireless user, and BSC is the management control core of wireless access network, the centralized management Radio Resource.BSC can be with one or more base stations, and a base station can only be controlled by unique BSC.
In the existing mobile communication wireless Access Network, because base station controlled in unique wireless BSC, therefore, if BSC breaks down, all base stations that will cause this BSC to control quit work.In wireless access network shown in Figure 1, four base stations and two BSC are arranged, wherein base station 1, base station 2 are controlled by BSC1, and base station 3, base station 4 are controlled by BSC2.Suppose that BSC1 breaks down, will cause base station 1, the base station 2 of BSC1 control to quit work.If the fault of BSC1 can't be got rid of for the moment, can switch to base station 1, base station 2 by BSC2 and control.At present this handoff procedure needs manual switching transmission line and manual to base station 1, base station 2 and BSC2 distribution configuration command, operates very loaded down with trivial detailsly, and speed is made mistakes slowly and easily.
Summary of the invention
Along with the development of mobile communication technology, between the base station controller in the wireless access network and and the base station controlled of base station controller between in transmission, be with network interconnection, as there being switching networks such as IP, ATM between the equipment, can realize intercommunication in transport layer.
Based on this, for improving the reliability of mobile communication system wireless access, the device that the object of the invention just is to provide a kind of backup implementation method of base station controller and realizes this method.
A kind of backup implementation method that improves the base station controller of wireless access network reliability in the mobile communication system may further comprise the steps at least:
Whether (a) the switching controls server detects has base station controller to break down, if any then carrying out the fault place
Reason, and whether decision needs to carry out the switching of base station controller;
(b) switch as need, then select the backup base station controller;
(c) the switching controls server issues the static data configuration of being taken over the base station to the backup base station controller, to
The base station of being taken over issues with new backup base station controller and sets up the information of communicating by letter;
(d) connected by the base station taken over and new backup base station controller and resume work.
The above-mentioned implementation method according to the present invention, wherein said step (a) may further comprise the steps at least:
Whether (a1) the switching controls server detects by fault warning mechanism has base station controller to break down, and if any then starting the service disconnection timer, and carries out troubleshooting, continues step (a2), otherwise continues step (a1);
(a2) whether the switching controls server recovers by the base station controller that the recovery alarm detection breaks down, and then zero clearing service disconnection timer returns step (a1) in this way, otherwise continues step (a3);
(a3) whether the time of judging the base station controller service disconnection timer timing of breaking down then determines in this way to switch and finish, otherwise returns step (a2) greater than a pre-set time interval value.
Described alarm comprises: the notice of the dependency basis station control fault that alarm subsystem sends to the switching controls server after base station controller breaks down; The warning information that service disconnection appears in base station that directly links to each other with base station controller that alarm subsystem is transmitted to the switching controls server or equipment of the core network.
Described troubleshooting comprises: the switching controls server is to the long-range reset command that issues of fault base station controller, or the mains switch of Long-distance Control fault base station controller, carries out the power-off restoration operation.
The above-mentioned implementation method according to the present invention, wherein said step (b) select the backup base station controller to comprise at least:
It is last from fault base station controller base station controller nearby that the switching controls server preferentially is chosen in transmission;
By the base station controller present dynamic situation of query candidate, judge whether to take over new base station and take over how many individual base stations of being controlled by the fault base station controller.
The static data configuration of being taken over the base station in the above-mentioned steps (c) is to obtain from centralized network management equipment, comprises in the base station controller comprising the equipment disposition and the radio-resource-configuration of base station all about the data configuration of base station.
The information of communicating by letter with new backup base station controller foundation in the above-mentioned steps (c) comprises the mailing address of new base station controller, the key that uses when communicating by letter at least.
A kind of switching controls server of realizing the invention described above method comprises at least:
The base station controller monitoring module is monitored the operating state of all base station controllers of its control of managing, and if any unusually, sends the message notification failure processing module;
Fault processing module, the failure message of reception base station controller monitoring module carries out corresponding troubleshooting;
Switch decision module, the result of detection failure processing module, whether decision carries out the switching of base station controller, sends the message informing base station controller and select module when need switch;
Base station controller is selected module, selects the new base station controller of taking over fault base station controller;
The data configuration distribution module issues by the data configuration of adapter base station and to new base station controller from the inquiry of centralized network management server, sets up the information of communicating by letter to being issued with new base station controller by the adapter base station; Or NM server issues data configuration and is issued the information of communicating by letter with the foundation of new base station controller to taking over the base station to new base station controller in the control sets.
This switching controls server is for being located on the centralized network management server or on other function server, also can independently being present in an independent server.
The present invention introduces a kind of new logic entity--switching controls server in the mobile communication system wireless access network.Under the situations such as fault that occur to recover for the moment at wireless access network BSC, can control the base station that other BSC taking over fault BSC is controlled.With respect to manual operation, shortened the operating time greatly, reduced the possibility of operating mistake, improved the reliability and the service quality of mobile communication system wireless access network thus.
Description of drawings
Fig. 1 is the existing wireless access network structural representation.
Fig. 2 is for using wireless accessing network structure signal of the present invention.
Fig. 3 is switching controls server operation flow process signal of the present invention.
Embodiment
For making purpose of the present invention, technical scheme and beneficial effect clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
The precondition that technical solution of the present invention is implemented is, requiring in the wireless access network between all base stations that the BSC of backup mutually and they control can intercommunication in transport layer, promptly has switching networks such as IP, ATM between the equipment.
Under above-mentioned technology prerequisite, the present invention has introduced a logic entity on BSC, base station---switching controls server in existing wireless access network, the BSC that this switching controls server can be controlled certain limit backs up switching mutually, for example, this scope can be certain mobile radio communication that certain telecom operators disposes in certain city.The switching controls server is a logic entity, which equipment to realize depending on manufacturer specifically for example this entity can be realized on the centralized network management server at.
Referring to shown in Figure 2, for the present invention introduces wireless accessing network structure schematic diagram behind the switching controls server.Wherein, there is BSC in two BSC, four base stations and this wireless access network of control to protect the switching controls server of switching in the wireless access network.Under normal circumstances, base station 1, base station 2 are controlled by BSC1, and base station 3, base station 4 are controlled by BSC2.Suppose that BSC1 breaks down, for the moment irrecoverable if the switching controls server is judged the fault of BSC1, the switching controls server will issue the relevant configuration of base station 1, base station 2 to BSC2, require it to take over this two base stations.The switching controls server issues the mailing address of BSC2, the information of using when communicating by letter such as key to base station 1, base station 2 simultaneously.BSC2 connects with base station 1, base station 2 afterwards, and operate as normal is recovered in base station 1, base station 2.
The functional module that the switching controls server comprises has:
The BSC monitoring module: all BSC operating states in the monitoring administrative area, if the BSC operation irregularity is arranged, then can give notice to fault processing module.
Fault processing module:, can carry out corresponding troubleshooting according to the phenomenon of the failure of BSC monitoring module notice.
Switch decision module: determine according to BSC troubleshooting situation whether needs carry out the BSC switching, to recover interrupted service.
BSC selects module: the new BSC that selects taking over fault BSC.This module will preferentially be chosen in the transmission BSC nearby, and the BSC present dynamic situation by these candidates of inquiry, as parameters such as loads, judges whether it can take over new base station.
Data configuration distribution module: inquire about the various data configurations of being taken over the base station from the centralized network management server, and issue these data configurations to new BSC.And issue with new BSC to the base station that quilt is taken over and to set up the information of communicate by letter, the information such as key of use during as the mailing address of new BSC, communication.
Referring to shown in Figure 3, processing spec and switching controls server between each functional module of switching controls server are as follows for the handling process of BSC fault:
1, whether the monitoring of BSC monitoring module has BSC to break down
Alarm subsystem sends the notice of dependency basis station control fault to the switching controls server after base station controller breaks down; In addition, if the service disconnection alarm appears in base station that directly links to each other with base station controller or equipment of the core network, alarm subsystem also will be transmitted to the switching controls server to warning information, so that the switching controls server has judged whether that accurately base station controller breaks down.
2, fault processing module is handled fault BSC
Because relate to switching, so fault should be seriously to arrive base station controller complete machine service disconnection, thus to carry out reset processing, by the long-range reset command that issues of switching controls server.If the mains switch that the switching controls server can the Long-distance Control base station controller can also carry out the power-off restoration operation by far-end.
3, switch decision module judges whether that according to the troubleshooting result needs switch BSC
If BSC because of a variety of causes, as equipment fault etc., causes the complete machine service disconnection, then whether the switching controls server alarms the judgment device fault to recover by detecting corresponding recovery.When detecting service disconnection, the switching controls server continued certain hour, and for example 15 minutes, and after taking various recovery measures, recovery measure such as for example reset, fault is not got rid of yet.Continue to interrupt for fear of business, just can determine to switch.
Above-mentioned process can realize by a service disconnection timer is set:
Break down when the switching controls server has detected base station controller, then start the service disconnection timer, carry out troubleshooting simultaneously;
, recovers the switching controls server then zero clearing service disconnection timer when detecting the base station controller that breaks down;
Whether the switching controls server judges the time of the base station controller service disconnection timer timing of breaking down greater than a pre-set time interval value, and for example 15 minutes, then decision was switched in this way.
4, BSC selects module to select new backup BSC
For the BSC that a quilt is taken over, its base station of controlling has a plurality of, and the BSC quantity of taking over these base stations has 1～N, and promptly these base stations can be shared by a plurality of BSC, but the maximum still only same BSC in base station connects.For how selecting new BSC, the switching controls server preferentially is chosen in the transmission BSC nearby, and by inquiring about these candidates' BSC present dynamic situation, as the cpu load of base station controller, the occupation condition of base station controller, comprise the occupancy of memory usage, STI etc., judge whether it can take over new base station.
The switching controls server preferentially is chosen in the transmission BSC nearby, table of human configuration in the switching controls server in advance, and list item is each base station controller.For each base station controller, list all possible backup base station controller, each backup base station controller will be established nearby weights in the transmission, so that select when switching.Except the weights of transmission range distance, also has the record of each backup base station controller capacity in the table.
At first table look-up during selection, it is nearest from the base station controller of fault to have a look at which base station controller, and the capacity of these base station controllers, inquires about the dynamic situation of the base station controller of these backups then.Comprehensive these data just can be known the present remaining capacity of base station controller of backup, so that the base station how many fault base station controllers decision is controlled switches on these backup base station controllers.
5, the data configuration distribution module issues base station configuration and issues with BSC to the base station that quilt is taken over to new BSC and sets up the information communicate by letter
After BSC selects to finish, the switching controls server will issue the static data configuration of being taken over the base station to these BSC, the static data configuration obtains from centralized network management equipment, comprise in the base station controller data configuration all about the base station, the equipment disposition that the base station is arranged, hardware resource such as veneer configuration just; Also has radio-resource-configuration, such as carrier frequency, plot planning or the like.Also need simultaneously to issue the information of communicating by letter, as the mailing address of new BSC, the information of using when communicating by letter such as key with new BSC foundation to the base station that quilt is taken over.
For base station controller and base station, receiving the maintenance management platform, to issue data configuration all be existing function, this unique different be to change by the switching controls server to issue data configuration.Specifically issuing to have dual mode: 1, the switching controls server issues then in person to the data configuration that the centralized network management server lookup needs; 2, switching controls server controls centralized network management server issues data configuration to relevant base station and base station controller.
6, new BSC sets up communication with the base station, and service disconnection is recovered
After above-mentioned steps was finished, the base station of being taken over was with connecting between the new BSC and recovering operate as normal.
The switching controls server is a logic entity, can use same station server physically with the centralized network management server, but does not also get rid of the possibility that independently is present on an independent server or other function server.
Under the situations such as fault that occur to recover for the moment at wireless access network BSC, in the time of need carrying out the base station handover operation, operate with respect to manual reversion, the present invention can shorten the time of BSC handover operation greatly, reduce the possibility of operating mistake, improve the reliability and the service quality of mobile communication system wireless access network thus.
Claims (9)
1, a kind of backup implementation method that improves the base station controller of wireless access network reliability in the mobile communication system is characterized in that this method may further comprise the steps at least:
(a) whether the switching controls server detects and to have base station controller to break down, and if any then carrying out troubleshooting, and whether decision needs to carry out the switching of base station controller;
(b) switch as need, then select the backup base station controller;
(c) the switching controls server issues the static data configuration of being taken over the base station to the backup base station controller, issues with new backup base station controller to the base station that quilt is taken over and sets up the information of communicating by letter;
(d) connected by the base station taken over and new backup base station controller and resume work.
2, the backup implementation method of base station controller according to claim 1 is characterized in that described step (a) may further comprise the steps at least:
Whether (a1) the switching controls server detects by fault warning mechanism has base station controller to break down, and if any then starting the service disconnection timer, and carries out troubleshooting, continues step (a2), otherwise continues step (a1);
(a2) whether the switching controls server recovers by the base station controller that the recovery alarm detection breaks down, and then zero clearing service disconnection timer returns step (a1) in this way, otherwise continues step (a3);
(a3) whether the time of judging the base station controller service disconnection timer timing of breaking down then determines in this way to switch and finish, otherwise returns step (a2) greater than a pre-set time interval value.
3, the backup implementation method of base station controller according to claim 2 is characterized in that described alarm comprises:
The notice of the dependency basis station control fault that alarm subsystem sends to the switching controls server after base station controller breaks down; The warning information that service disconnection appears in base station that directly links to each other with base station controller that alarm subsystem is transmitted to the switching controls server or equipment of the core network.
4, the backup implementation method of base station controller according to claim 1 and 2 is characterized in that described troubleshooting comprises:
The switching controls server is to the long-range reset command that issues of fault base station controller, or the mains switch of Long-distance Control fault base station controller, carries out the power-off restoration operation.
5, the backup implementation method of base station controller according to claim 1 is characterized in that described step (b) selection backup base station controller comprises at least:
It is last from fault base station controller base station controller nearby that the switching controls server preferentially is chosen in transmission;
By the base station controller present dynamic situation of query candidate, judge whether to take over new base station and take over how many individual base stations of being controlled by the fault base station controller.
6, the backup implementation method of base station controller according to claim 1, it is characterized in that being disposed by the static data of adapter base station in the described step (c) is to obtain from centralized network management equipment, comprise in the base station controller and to comprise the equipment disposition and the radio-resource-configuration of base station all about the data configuration of base station.
7, the backup implementation method of base station controller according to claim 1 is characterized in that the information of communicating by letter with new backup base station controller foundation in the described step (c) comprises the mailing address of new base station controller, the key that uses when communicating by letter at least.
8, a kind of switching controls server of realizing the described method of claim 1 is characterized in that this switching controls server comprises at least:
The base station controller monitoring module is monitored the operating state of all base station controllers of its control of managing, and if any unusually, sends the message notification failure processing module;
Fault processing module, the failure message of reception base station controller monitoring module carries out corresponding troubleshooting;
Switch decision module, the result of detection failure processing module, whether decision carries out the switching of base station controller, sends the message informing base station controller and select module when need switch;
Base station controller is selected module, selects the new base station controller of taking over fault base station controller;
The data configuration distribution module issues by the data configuration of adapter base station and to new base station controller from the inquiry of centralized network management server, sets up the information of communicating by letter to being issued with new base station controller by the adapter base station; Or NM server issues data configuration and is issued the information of communicating by letter with the foundation of new base station controller to taking over the base station to new base station controller in the control sets.
9, switching controls server according to claim 8 is characterized in that this switching controls server is for being located on the centralized network management server.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 01134497 CN1232131C (en) | 2001-11-06 | 2001-11-06 | Back-up method and device for base station controller in radio access network |
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| CN 01134497 CN1232131C (en) | 2001-11-06 | 2001-11-06 | Back-up method and device for base station controller in radio access network |
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| CN1418023A true CN1418023A (en) | 2003-05-14 |
| CN1232131C CN1232131C (en) | 2005-12-14 |
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| WO2006063519A1 (en) * | 2004-12-14 | 2006-06-22 | Huawei Technologies Co., Ltd. | Method for networking base station of wireless access network and the wireless access network |
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| CN100375476C (en) * | 2003-12-23 | 2008-03-12 | 中兴通讯股份有限公司 | Method for optimizing network management occupied internal storage in base station system |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN1232131C (en) | 2005-12-14 |
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