CN101730033B - Overload control method and system in long-term evolution network - Google Patents
Overload control method and system in long-term evolution network Download PDFInfo
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- CN101730033B CN101730033B CN200810225647A CN200810225647A CN101730033B CN 101730033 B CN101730033 B CN 101730033B CN 200810225647 A CN200810225647 A CN 200810225647A CN 200810225647 A CN200810225647 A CN 200810225647A CN 101730033 B CN101730033 B CN 101730033B
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Abstract
The invention relates to a mobility management entity, and an overload control method and an overload control system of a base station in a long-term evolution network. The method comprises the following steps that: an overload state change detection mechanism is added on the mobility management entity side and the base station side; overload state change messages are notified to an opposite side through signalling; the base station can adjust processed service messages according to the signalling notification messages to reduce load conditions of the mobility management entity; and the mobility management entity adjusts transmission quantity of the messages according to the change of the overload conditions of the base station so as to reduce the load of the base station. The overload control method and the overload control system can solve the technical problem that the base station and the mobility management entity cannot dynamically control overload so that the mobility management entity and the base station can take corresponding measures to release the load conditions in time when the loads thereof are changed so as to guarantee communication quality.
Description
Technical field
The present invention relates to Long Term Evolution (Long Term Evolution; LTE) system architecture of network design; Relate in particular to (the Mobility Management Entity of Mobility Management Entity in a kind of long-term evolving network; MME) and base station (Evolved NodeB, overload controlling method eNB) and system.
Background technology
In order to face the future, make lasting competitiveness; 3GPP has started wireless access network Long Term Evolution research project in December, 2004; The general land wireless access of evolution (Evolved Universal Terrestrial Radio Access; E-UTRA) technology and the universal terrestrial access network of evolution (Evolved Universal Terrestrial Radio Access Network, E-UTRAN), and towards evolution system framework (the System Architecture Evolution of the packet domain core network of all-IP; SAE); Hoping to remain on the technological first-strike advantage of moving communicating field through lasting evolution and enhancing from the wave point to the core network, is that the ever-increasing demand of operator and user provides satisfied support with the assurance.
Long-term evolving network adopts the flat network architecture, and as shown in Figure 1, base station eNB is the main body of wireless network, and whole access network is made up of the base station fully.Wherein, The connection that can have logic or physics between the base station as required, bottom adopts the IP transmission between the base station, logically connects mutually through X2 interface; Such design; Be mainly used in and support subscriber equipment (User Equipment, the UE) mobility in whole network, assurance user's seamless switching.Each base station is connected to the SAE core network through the S1 interface; Be evolution block core net (Evolved Packet Core; EPC), more particularly, be exactly to link to each other with the core network mobility management entity through S1-MME interface; Through S1-U interface and gateway (Serving Gateway, SGW) connection.S1-MME and S1-U can regard the control plane and the user plane of S1 interface respectively as.To the S1 interface, support that the multi-to-multi between eNB and the MME/SGW connects.
In the E-UTRAN network, base station eNB mainly is responsible for following function:
(1) radio resource management function;
(2) connect mobility control, Dynamic Resource Allocation for Multimedia and scheduling etc.;
(3) encryption of customer traffic and IP header-compressed;
(4) select Mobility Management Entity for UE;
(5) user plane data is routed to corresponding SGW;
(6) scheduling of Mobility Management Entity beep-page message and transmission;
(7) scheduling and the transmission of the broadcast message of Mobility Management Entity or webmaster initiation;
(8) measurement and the measurement report that are used for mobility and scheduling dispose.
Mobility Management Entity is responsible for following function:
(1) beep-page message is sent to relevant eNB;
(2) security control (authentication, signaling integrity protection and data encryption);
(3) mobility of idle condition control;
(4) SAE carries control;
(5) encryption of Non-Access Stratum signaling and integrity protection.
SGW is responsible for following function:
(1) user data wraps in the termination of wireless access network;
(2) support the ambulant user plane data exchange of UE.
As shown in Figure 2; S1 interface application protocol (S1 Application Protocol; S1AP) be the upper-layer protocol of S1 interface; The top signaling flow process of S1 interface is provided among the S1AP, has been mainly used in the various signaling control of treatment S 1 interface control plane, accomplished functions such as bearer management, context management, overload control.
In the present Long Term Evolution architectural framework; An eNB can provide access service for numerous UE; That is to say that a base station can link to each other with a plurality of UE; But the Radio Resource of a base station and disposal ability are limited, and the multiple reasons such as channel variation, UE variable power and the operator's amount of distributing telephone numbers increase that cause owing to interference can cause the overload of base station.Equally, a Mobility Management Entity also can be set up signaling with a plurality of eNB and be connected, and when the base station that Mobility Management Entity connects has too much surpassed the disposal ability of Mobility Management Entity, overload conditions just occurred, causes the congested of communication link or interrupts.When overload conditions appears in eNB or Mobility Management Entity, can be through application layer signaling the other side of S1 interface, the signaling of S1 interface processing mobile management entity overload of the prior art is seen shown in Figure 3 at present.Fig. 3 (a) is that Mobility Management Entity is notified to the base station when overload conditions occurring and oneself has been in load state at present; And tell eNB to alleviate the method that load state should be taked, Fig. 3 (b) is that Mobility Management Entity is notified to the base station when working as the overload situation and stopping and oneself has not been in load state at present; Fig. 3 (c) is that eNB sends the present overload situations of configuration update message report self to Mobility Management Entity.At present mainly contain two kinds in the mode of handling overload control on the Mobility Management Entity through the S1 Signalling exchange: a kind of be to learn overload conditions by the base station after; Configuration update message through sending among above-mentioned Fig. 3 (c) is reported present overload conditions to Mobility Management Entity, and Mobility Management Entity reduces the transmission (such as beep-page message) of some message according to the overloaded base stations situation.Another kind method is worked as Mobility Management Entity self exactly and is detected overload conditions; Send overload beginning message to the base station; Carry in the message overload and base station the measure that should take, the Mobility Management Entity measure that can indicate the base station to take at present mainly is that some is professional with message or the processing ratio of sending the S1 interface message traffic volume with minimizing S1 interface message is set for limit processing.
Can know according to foregoing, only propose eNB and Mobility Management Entity in the present standard and begun to occur overload conditions and overload flow process and the method when disappearing.After Mobility Management Entity was controlled overload conditions, overload can change, and should adjust the overload processing method this moment timely, but the not dynamic control and treatment ability of transshipping of regulating of base station and Mobility Management Entity in the present agreement.
Summary of the invention
In view of this, one of the object of the invention provides the overload controlling method in a kind of long-term evolving network, uses this method can solve base station and Mobility Management Entity and can not dynamically transship the technical problem of control.
For achieving the above object, technical scheme of the present invention is achieved in that
The method of the overload control in a kind of long-term evolving network comprises:
Detecting self overload at Mobility Management Entity occurs in the process that this overload finishes; If this overload changes; Then pass through the signaling message informing base station, and informing base station is adjusted handled service message to reduce the Mobility Management Entity load state;
Detect self overload produces in the process that this overload finishes in the base station; If this overload changes; Then through signaling message notice Mobility Management Entity, Mobility Management Entity according to the traffic volume of the variation adjustment message of overloaded base stations state to alleviate the load of base station.
Based on technique scheme, further, detect self overload at said Mobility Management Entity and occur in the terminal procedure, the treatment step of Mobility Management Entity is:
A01, Mobility Management Entity detect whether produce overload; If then carry out A02; Then continue cycle detection if not;
A02, Mobility Management Entity send overload beginning message to the base station;
Whether A03, Mobility Management Entity regularly detect overload and change, if, execution in step A04 then; Then continue regularly cycle detection if not;
A04, Mobility Management Entity send the overload updating message to the base station, the adjustment operation that overload that informing base station is at present up-to-date and informing base station should be made;
A05, Mobility Management Entity judge whether overload disappears, if execution in step A06 then; Execution in step A03 then if not;
A06, Mobility Management Entity send overload to the base station and stop message.
Based on such scheme, different is in steps A 04, to resend overload beginning message with replacement overload updating message, to accomplish same function.
Based on such scheme, different is can steps A 04 be replaced to following steps:
A24, Mobility Management Entity send configuration update message to the base station, carry the processing method that take Mobility Management Entity indication base station in the message;
The config update response message is sent to Mobility Management Entity in A25, base station:
Further, it is following to detect the treatment step that self overload occurs in the terminal procedure in said base station:
Whether B1, base station self cycle detection overload takes place, if then execution in step B2 takes place;
Configuration update message is sent to Mobility Management Entity in B2, base station, begins with the field identification overload;
B3, Mobility Management Entity send the config update response message to the base station;
The traffic volume of B4, Mobility Management Entity adjustment message alleviates load;
Whether B5, base station are regularly detected overload and are changed; If change then execution in step B6;
Configuration update message report self present load situation is sent to Mobility Management Entity in B6, base station;
B7, Mobility Management Entity send the config update response message to the base station;
Whether B8, base station detect overload and disappear, if execution in step B9 then; Execution in step B5 then if not;
Configuration update message is sent to Mobility Management Entity in B9, base station, disappears with the field identification overload;
B10, Mobility Management Entity send the config update response message to the base station.
Another goal of the invention of the present invention provides the overload control system in a kind of long-term evolving network, and for achieving the above object, technical scheme of the present invention is achieved in that
The system of the overload control in a kind of long-term evolving network comprises:
First control module is used for beginning and finishing of base stations detected side overload, and the signaling message that begins and finish of the relevant overload between processing and Mobility Management Entity;
Second control module is used to detect the beginning and finish of overload of Mobility Management Entity side, and the relevant overload with the base station of the processing signaling message that begins and finish;
The 3rd control module is used for the variation of base stations detected side overload, and the signaling message that changes of the relevant overload between processing and Mobility Management Entity;
The 4th control module is used to detect the variation of Mobility Management Entity side overload, and the signaling message that changes of the relevant overload between processing and base station;
Said first control module with the base station side overload begin and the ending message real-time informing is given the 3rd control module; Said second control module with the overload of Mobility Management Entity side begin and the ending message real-time informing is given the 4th control module.
Further, said the 3rd control module comprises:
Third state detection module is used for the regularly variation of base stations detected side overload;
The 3rd signaling processing module is used for the variation of base station side overload is sent to the Mobility Management Entity side through signaling, and the response that receives and handle the Mobility Management Entity side.
Further, said the 4th control module comprises:
The four condition detection module is used for the variation of timing shift detection mobility management entity side overload;
The 4th signaling processing module is used for the variation of Mobility Management Entity side overload is sent to the base station through signaling, and the response that receives and handle base station side.
Further, signaling noted earlier or message adopt is to propose in S1 interface application protocol or the existing solution of universal land radio access web of evolution.
The signaling that the present invention changes through the relevant overload that increases between base station and Mobility Management Entity; Make Mobility Management Entity can and the base station can when the other side and the load of self change, in time take corresponding method to alleviate load condition, thereby guarantee communication quality.
Description of drawings
Fig. 1 is the Organization Chart of EUTRAN in the LTE network;
Fig. 2 is the signaling protocol stack figure of S1 interface;
The overload that Fig. 3 (a) sends to the base station when overload occurring for present Mobility Management Entity begins message;
The overload that Fig. 3 (b) sends to the base station when overload occurring for present Mobility Management Entity stops message;
The configuration update message that sends to Mobility Management Entity when Fig. 3 (c) overload occurs for present base station;
The overload updating message that the Mobility Management Entity that Fig. 4 (a) increases newly for the present invention sends to the base station;
The configuration update message that the Mobility Management Entity that Fig. 4 (b) revises for the present invention sends to the base station;
Fig. 5 (a) is the program flow diagram of first embodiment of the invention;
Fig. 5 (b) is the sequential flow chart of first embodiment of the invention;
Fig. 6 (a) is the program flow diagram of second embodiment of the invention;
Fig. 6 (b) is the sequential flow chart of second embodiment of the invention;
Fig. 7 (a) is the program flow diagram of third embodiment of the invention;
Fig. 7 (b) is the sequential flow chart of third embodiment of the invention;
Fig. 8 (a) is the program flow diagram of fourth embodiment of the invention;
Fig. 8 (b) is the sequential flow chart of fourth embodiment of the invention;
Fig. 9 is the building-block of logic of device according to the invention.
Embodiment
According to accompanying drawing and embodiment the present invention is done further explain below:
Core concept of the present invention is, sends the S1-AP signaling message each other through base station and Mobility Management Entity, makes and can in time notify the other side when both sides' overload conditions changes, so that to can in time taking corresponding overload controlling method.
Processing method when the Mobility Management Entity that the present invention proposes overload conditions occurs and changes comprises two steps: overload appears in base station and Mobility Management Entity when changing to the other side sends the overload conditions of signaling report self, and overload controlling method is adjusted with the other side's message that the Mobility Management Entity basis is received in the base station.Be specially, send the present overload of S1-AP message informing the other side self to Mobility Management Entity again when on the one hand the base station load state occurs and changes, the parameter of in signaling message, carrying has reflected current overload., passes through the overload of Mobility Management Entity to send the present overload in S1-AP message informing base station on the other hand when changing.
The signaling of wherein mentioning is a kind of of following signaling:
Configuration update message: the config update flow process is to be used for upgrading configuration data for base station and Mobility Management Entity each other at the S1 interface.The message of this flow process is two-way, sees Fig. 3 (c) and Fig. 4 (b).The configuration update message that send to Mobility Management Entity the base station also includes the function of base station to Mobility Management Entity notice overload conditions, realizes through in message, carrying the overload field information.
Overload beginning message: overload beginning flow process is that Mobility Management Entity is used for informing base station self and the flow process of overload occurs.Through this message, the Mobility Management Entity informing base station self overload occurs.The treatment measures that simultaneously informing base station institute should take in message, such as: refuse all non-emergency call service messages, refuse the treatment measures such as business request information that all respond beep-page messages.
Overload stops message: it is that Mobility Management Entity is used for the flow process that informing base station self overload disappears that overload stops flow process.Through this message, the overload that the Mobility Management Entity informing base station occurred self disappears.
The overload updating message: the overload updating message is a kind of new information that the present invention proposes; Be used for handling when the Mobility Management Entity overload changes, Mobility Management Entity is the present overload conditions of informing base station and be adjusted at following the measure that should take of current situation timely.
First embodiment of the invention is a Mobility Management Entity through transshipping the flow process that new technological process more comes the informing base station overload conditions to change, and as shown in Figure 5, Fig. 5 a is the program flow diagram of present embodiment, and Fig. 5 b is the sequential flow chart of present embodiment.Overload conditions occurs when Mobility Management Entity detects self, send the overload initiation command, the processing that this order provides the base station to do for the information of alleviating overload conditions UE being sent to the base station.After carry out according to this method the base station.Mobility Management Entity can be provided with timer, the overload conditions of self is carried out periodicity detect, and disappears up to overload conditions, and timer stops.If find that when regularly detecting variation has taken place overload conditions, then Mobility Management Entity is just sent out an overload updating message and is given the base station, the overload conditions that informing base station is current and in following the method that should adjust of the present situation.Concrete steps are following:
Steps A 01, Mobility Management Entity detect whether produce overload; If then carry out A02; Then continue cycle detection if not;
Steps A 02, Mobility Management Entity send overload beginning message to the base station;
Mobility Management Entity sends overload beginning message to the base station, and overload conditions has appearred in the informing base station Mobility Management Entity, and informing base station processing section service message is to reduce the Mobility Management Entity load state;
Whether steps A 03, Mobility Management Entity regularly detect overload and change, if, execution in step A04 then; Then continue regularly cycle detection if not;
Timer is set on the Mobility Management Entity, periodically detects the situation of finding that overload conditions changes;
Steps A 04, Mobility Management Entity send the overload updating message to the base station, the adjustment operation that overload that informing base station is present and informing base station should be made;
Base station adjustment operation refers to that the base station adjusts handled service message to reduce the operation of Mobility Management Entity load state;
Steps A 05, Mobility Management Entity judge whether overload disappears, if execution in step A06 then; Execution in step A03 then if not;
Steps A 06, Mobility Management Entity send overload to the base station and stop message.
Second embodiment of the invention is that Mobility Management Entity is through retransmitting the flow process that overload beginning flow process comes the informing base station overload conditions to change.As shown in Figure 6, Fig. 6 a is the program flow diagram of present embodiment, and Fig. 6 b is the sequential flow chart of present embodiment.Overload conditions appears when Mobility Management Entity detects self; Send the overload initiation command to the base station, the processing that this order provides the base station should do for the information institute of alleviating overload conditions UE being sent is after the base station is according to this method execution; Mobility Management Entity is provided with timer; The overload conditions of self is carried out periodicity detect, disappear up to overload conditions, timer stops.If variation has taken place overload conditions when detecting at every turn, Mobility Management Entity is just sent out the overload updating message again and is given the base station, the overload conditions that informing base station is current and in following the method that should adjust of the present situation.Concrete steps are following:
A11, Mobility Management Entity detect whether produce overload; If then carry out A12; Then continue cycle detection if not;
A12, Mobility Management Entity send overload beginning message to the base station;
Mobility Management Entity sends overload beginning message to the base station, and overload conditions has appearred in the informing base station Mobility Management Entity, and informing base station processing section service message is to reduce the Mobility Management Entity load state.
Whether A13, Mobility Management Entity regularly detect overload and change, if, execution in step A14 then; Then continue regularly cycle detection if not;
Whether timer cycle property detection self overload is set on Mobility Management Entity changes.
A14, Mobility Management Entity send overload beginning message to the base station, the adjustment operation that overload that informing base station is at present up-to-date and informing base station should be made;
Mobility Management Entity resends overload beginning message to the base station, the overload conditions that the informing base station Mobility Management Entity is present, and informing base station is adjusted handled service message to reduce the Mobility Management Entity load state;
A15, Mobility Management Entity judge whether overload disappears, if execution in step A16 then; Execution in step A13 then if not;
A16, Mobility Management Entity send overload to the base station and stop message.
Third embodiment of the invention is the flow process that Mobility Management Entity comes the informing base station overload conditions to change through the config update flow process.As shown in Figure 7, Fig. 7 a is the program flow diagram of present embodiment, and Fig. 7 b is a present embodiment sequential flow chart.Overload conditions appears when Mobility Management Entity detects self, to base station configuration updating order, and the processing that this order provides the base station to do for the information of alleviating overload conditions UE being sent.After carry out according to this method the base station.Mobility Management Entity carries out periodicity to the overload conditions of self and detects timer can be set, and disappears up to overload conditions, and timer stops.If variation has taken place overload conditions when detecting at every turn, Mobility Management Entity is just sent out the overload updating message again and is given the base station, the overload conditions that informing base station is current and in following the method that should adjust of the present situation, and concrete steps are following:
A21, Mobility Management Entity detect whether produce overload; If then carry out A22; Then continue cycle detection if not;
A22, Mobility Management Entity send overload beginning message to the base station;
Mobility Management Entity sends overload beginning message to the base station, and overload conditions has appearred in the informing base station Mobility Management Entity, and informing base station processing section service message is to reduce the Mobility Management Entity load state;
Whether A23, Mobility Management Entity regularly detect overload and change, if, execution in step A24 then; Then continue regularly cycle detection if not;
Timer is set on Mobility Management Entity, periodically detects whether overload conditions changes.
A24, Mobility Management Entity send configuration update message to the base station;
Mobility Management Entity sends configuration update message to the base station, the overload conditions that the informing base station Mobility Management Entity is present, and informing base station is adjusted handled service message to reduce the Mobility Management Entity load state;
The config update response message is sent to Mobility Management Entity in A25, base station
A26, Mobility Management Entity judge whether overload disappears, if execution in step A27 then; Execution in step A23 then if not;
A27, Mobility Management Entity send overload to the base station and stop message.
Fourth embodiment of the invention self exists overload to change at first being detected by the base station; Send configuration update message by the base station to Mobility Management Entity and notify present overload conditions flow process; As shown in Figure 8; Fig. 8 a is the program flow diagram of present embodiment, and Fig. 8 b is the sequential flow chart of present embodiment.The base station can be provided with timer, when there is overload in cycle detection to self, sends configuration update message to Mobility Management Entity and notifies present overload conditions.Mobility Management Entity reduces beep-page message and the UE related news that point to UE according to the overload of base station, thereby reduces the load of Mobility Management Entity and base station.Disappear when the base station detects overload conditions, stop timer, the overload conditions present through the configuration update message report disappears.Concrete steps are following:
The base station detects self and overload conditions occurs;
Whether B1, base station self cycle detection overload takes place, if then execution in step B2 takes place;
Configuration update message is sent to Mobility Management Entity in B2, base station, and overload conditions has appearred in the notice Mobility Management Entity, begins with the field identification overload;
B3, Mobility Management Entity send the config update response message to the base station;
The traffic volume of B4, Mobility Management Entity adjustment message is to alleviate the load of base station;
Whether B5, base station are regularly detected overload and are changed; If change then execution in step B6;
Timer is set on the base station, periodically detects and find whether overload conditions changes;
Configuration update message report present load situation is sent to Mobility Management Entity in B6, base station;
B7, Mobility Management Entity send the config update response message to the base station;
Whether B8, base station detect overload and disappear, if execution in step B9 then; Execution in step B5 then if not;
Configuration update message is sent to Mobility Management Entity in B9, base station, disappears with the field identification overload;
B10, Mobility Management Entity send the config update response message to the base station.
Fig. 9 is for realizing the system structure of device figure of the method for the invention; System comprises: be used for beginning and finishing of base stations detected side overload, and first control module that begins and finish signaling message of the relevant overload between processing and Mobility Management Entity; Be used to detect the beginning and finish of overload of Mobility Management Entity side, and the relevant overload with base station side of processing begins and finishes second control module of signaling message; Be used for the variation of base stations detected side overload, and the relevant overload between processing and Mobility Management Entity changes the 3rd control module of signaling message; Be used to detect the variation of Mobility Management Entity side overload, and the relevant overload between processing and base station changes the 4th control module of signaling message.
The operation of relevant overload control is accomplished in the present agreement in first control module and the second control module cooperation, and the signaling message of main processing has the configuration update message that overload beginning message, overload stop message and base station to send and the config update response message of Mobility Management Entity response.
The operation that relevant overload changes is accomplished in the 3rd control module and the 4th control module cooperation; The 3rd control module and the 4th control module are transferred in control between overload begins and finishes, first control module with the base station side overload begin and the ending message real-time informing is given the 3rd control module; Second control module with the overload of Mobility Management Entity side begin and the ending message real-time informing is given the 4th control module.
The 3rd control module comprises third state detection module and the 3rd signaling processing module.Third state detection module is used for the regularly variation of base stations detected side overload; The 3rd signaling processing module is used for the variation of base station side overload is sent to the Mobility Management Entity side through signaling, and the response that receives and handle the Mobility Management Entity side.
The 4th control module comprises four condition detection module and the 4th signaling processing module: the four condition detection module is used for the variation of timing shift detection mobility management entity side overload; The 4th signaling processing module is used for the variation of Mobility Management Entity side overload is sent to the base station through signaling, and the response that receives and handle base station side.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the method for the control of the overload in the long-term evolving network is characterized in that, comprising:
Detecting self overload at Mobility Management Entity occurs in the process that this overload finishes; If this overload changes; Then pass through the signaling message informing base station, and informing base station is adjusted handled service message to reduce the Mobility Management Entity load state;
Detect self overload produces in the process that this overload finishes in the base station; If this overload changes; Then through signaling message notice Mobility Management Entity, Mobility Management Entity according to the traffic volume of the variation adjustment message of overloaded base stations state to alleviate the load of base station.
2. method according to claim 1 is characterized in that, the step when Mobility Management Entity detects and handle overload generation and variation is following:
A01, Mobility Management Entity detect whether produce overload; If then carry out A02; Then continue cycle detection if not;
A02, Mobility Management Entity send overload beginning message to the base station;
Whether A03, Mobility Management Entity regularly detect overload and change, if, execution in step A04 then; Then continue regularly cycle detection if not;
A04, Mobility Management Entity send the overload updating message to the base station, the adjustment operation that overload that informing base station is at present up-to-date and informing base station should be made;
A05, Mobility Management Entity judge whether overload disappears, if execution in step A06 then; Execution in step A03 then if not;
A06, Mobility Management Entity send overload to the base station and stop message.
3. method according to claim 2 is characterized in that, in steps A 04, resends overload beginning message with replacement overload updating message.
4. method according to claim 2 is characterized in that, by following steps replacement step A04:
A24, Mobility Management Entity send configuration update message to the base station, carry the processing method that take Mobility Management Entity indication base station in the message;
The config update response message is sent to Mobility Management Entity in A25, base station.
5. method according to claim 1 is characterized in that, the step when overload generation and variation are detected and handled in the base station is following:
Whether B1, base station self cycle detection overload takes place, if then execution in step B2 takes place;
Configuration update message is sent to Mobility Management Entity in B2, base station, and the sign overload begins;
B3, Mobility Management Entity send the config update response message to the base station;
The traffic volume of B4, Mobility Management Entity adjustment message alleviates load;
Whether B5, base station are regularly detected overload and are changed; If change then execution in step B6;
Configuration update message report self present load situation is sent to Mobility Management Entity in B6, base station;
B7, Mobility Management Entity send the config update response message to the base station;
Whether B8, base station detect overload and disappear, if execution in step B9 then; Execution in step B5 then if not;
Configuration update message is sent to Mobility Management Entity in B9, base station, and the sign overload disappears;
B10, Mobility Management Entity send the config update response message to the base station.
6. method according to claim 1 is characterized in that, what said signaling message adopted is the S1 interface application protocol of the universal land radio access web of evolution.
7. the overload control system in the long-term evolving network is characterized in that, comprising:
First control module is used for beginning and finishing of base stations detected side overload, and the signaling message that begins and finish of the relevant overload between processing and Mobility Management Entity;
Second control module is used to detect the beginning and finish of overload of Mobility Management Entity side, and the relevant overload with the base station of the processing signaling message that begins and finish;
The 3rd control module is used for the variation of base stations detected side overload, and the signaling message that changes of the relevant overload between processing and Mobility Management Entity;
The 4th control module is used to detect the variation of Mobility Management Entity side overload, and the signaling message that changes of the relevant overload between processing and base station;
Said first control module with the base station side overload begin and the ending message real-time informing is given the 3rd control module; Said second control module with the overload of Mobility Management Entity side begin and the ending message real-time informing is given the 4th control module.
8. system according to claim 7 is characterized in that, said the 3rd control module comprises:
Third state detection module is used for the regularly variation of base stations detected side overload;
The 3rd signaling processing module is used for the variation of base station side overload is sent to the Mobility Management Entity side through signaling, and the response that receives and handle the Mobility Management Entity side.
9. system according to claim 7 is characterized in that, said the 4th control module comprises:
The four condition detection module is used for the variation of timing shift detection mobility management entity side overload;
The 4th signaling processing module is used for the variation of Mobility Management Entity side overload is sent to the base station through signaling, and the response that receives and handle base station side.
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