CN102238755A

CN102238755A - X2 interface self-establishing method and device

Info

Publication number: CN102238755A
Application number: CN2010101592785A
Authority: CN
Inventors: 孙连翘
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2010-04-26
Filing date: 2010-04-26
Publication date: 2011-11-09
Also published as: WO2011134223A1

Abstract

The invention provides an X2 interface self-establishing method and device. The method comprises the following steps: an eNB (evolved NodeB) regularly detects the number of self-established X2 interfaces; and if the number of the self-established X2 interfaces of the eNB exceeds a pre-set threshold within a detection period, the eNB deletes m X2 interfaces beyond the pre-set threshold. By adopting the technical scheme of the invention, proper X2 interfaces can be selected to release resources when the resources of X2 interfaces of eNB1 are relatively in shortage so as to perform X2 interface self-establishment with other adjacent eNBs.

Description

A kind of X2 interface is from method and the device set up

Technical field

The present invention relates to the communications field, be specifically related to a kind of X2 interface from method and the device set up.

Background technology

In LTE (Long Term Evolution, the Long Term Evolution) system, present X2 interface is set up mode following two kinds:

By IP information and the coupling ID of background data base configuration in abutting connection with eNB (eNodeB, enode b).

By ANR (Automatic Neighbor Relation, Automatic Neighboring Relation) Function finds Global eNB ID and TAI (the Tracking Area Identity in abutting connection with eNB, tracing area sign) information is obtained IP address in abutting connection with eNB by the S1 mouth, and is dynamically generated coupling ID.

In the LTE system, about obtaining the transport addresses information of the other side eNB automatically, the method for setting up X2 interface is as follows:

ENB1 has got access to the Global eNB ID of eNB2, TAI information, eNB1 sends eNB Configuration Transfer (eNB disposes transmission) message to MME so, the information of eNB1 is inserted in the Source eNB-ID, the information of eNB2 is inserted in the Target eNB-ID, and selection SONInformation is SON Information Request;

After MME receives this message, the type of judging SON (Self-Organized Network) Information (self-organizing network information) is SON Information Request, MME passes through the eNB2 of target side with this message so, and message is called MME Configuration Transfer;

After eNB2 receives this message, organize eNB Configuration Transfer message to give MME, selecting SON Information in this message is SON Information Reply, fills in IP address and port numbers with the X2 interface of source eNB1 in SON InformationReply;

After MME receives this message, judge that SON Information is SON Information Reply, MME passes through source eNB1 with this message so, and message is called MME ConfigurationTransfer;

After source eNB1 receives this message, just got access to the IP address and the port numbers of the X2 interface of target side eNB2, SCTP (Stream Control Transmission Protocol SCTP) layer just can be set up this coupling so.Obtain the idiographic flow of IP address and see Fig. 1.

After the coupling of SCTP layer set up successfully, the X2 mouth was set up flow process and just can be initiated the X2 interface foundation of success back between eNB1 and the eNB2.Idiographic flow is seen Fig. 2.By the X2 interface of setting up with upper type, be called from the X2 interface of setting up.

ENB1 can set up X2 interface in abutting connection with eNB certainly with a plurality of, so just there is following scene: because the X2 interface resource-constrained, after the eNB of eNB1 and a plurality of adjacency has set up X2 interface certainly, just may exist some X2 interface utilization rate low, but but taking the resource of the X2 interface of eNB1, cause other in abutting connection with eNB can not and eNB1 between set up X2 interface.

Summary of the invention

The problem to be solved in the present invention provides a kind of X2 interface from method and the device set up, can realize when the X2 interface resource of eNB1 is relatively more nervous, selecting suitable X2 interface to carry out resource release so that with other carry out the foundation certainly of X2 interface in abutting connection with eNB.

The invention provides a kind of X2 interface from the method for setting up, comprise: enode b regularly detects it from the X2 interface quantity of setting up, when described enode b in the sense cycle when the X2 interface quantity of setting up surpasses default thresholding, the enode b deletion exceeds m X2 interface of default thresholding.

Further, described method comprises that also enode b is added up each X2 interface interaction message quantity in sense cycle;

M the X2 interface that described enode b deletion exceeds default thresholding is meant, m the X2 interface of setting up certainly that enode b deletion interaction message quantity is minimum.

Further, described method also comprises, and is immediately self-built as X2 interface, for described X2 interface is provided with the counter of statistics interaction message, the counter of clear 0 X2 interface of setting up separately when each sense cycle begins.

Further, during m X2 interface of described enode b deletion, the X2 interface of having set up certainly when the deletion sense cycle begins earlier, when described from the X2 interface number of setting up during less than m, selecting deleting of interaction message minimum number again in described sense cycle the newly-built X2 interface, is m up to the X2 interface number of deletion.

Further, being made as the X2 interface number of setting up certainly that an enode b distributes is N;

When the enode b setting when setting up the X2 interface number and mostly be L most, described default thresholding is L;

Certainly the highest occupancy of setting up X2 interface when the enode b setting is Y, and described default thresholding is N * Y;

When enode b was provided with setting up the X2 interface number certainly and being M of reservation, described default thresholding was N-M.

The present invention also provides a kind of X2 interface from the device of setting up, and comprises detection module, judge module and removing module;

Described detection module is used for regularly detecting it from the X2 interface quantity of setting up, and testing result is sent to judge module;

Described judge module is used to judge whether eNB surpasses default thresholding from the X2 interface quantity of setting up, and then further judges excessive amount m as if surpassing, and m X2 interface of setting up certainly of notice removing module deletion;

Described removing module is used to delete m from the X2 interface of setting up, and discharges this m all resources of occupying on the X2 interface of setting up.

Further, described judge module is also selected the minimum m of an interaction message number X2 interface of setting up certainly according to the interaction message quantity of each X2 interface, and m the X2 interface information of selecting from foundation is sent to removing module.

Further, described device also comprises module is set, be used for for described X2 interface counter being set as X2 interface is self-built immediately, and the counter of each sense cycle clear 0 X2 interface of setting up separately when beginning;

Described counter is used to write down the interaction message from the X2 interface of setting up;

Described judge module obtains the interaction message quantity of the X2 interface of setting up separately by the value that reads each counter.

Further, described judge module selects m X2 interface to be meant, the X2 interface of having set up certainly when judge module selects sense cycle to begin earlier, when described from the X2 interface number of setting up during less than m, selecting the X2 interface of interaction message minimum number again in described sense cycle the newly-built X2 interface, is m up to the X2 interface number of selecting.

Adopt technical scheme of the present invention, eNB1 is added up the foundation that the value that comes out discharges as the X2 interface resource from setting up (comprise and receive and send both direction) X2HANDOVER REQUEST message and LOADINFORMATION message bar number mutual on the X2 interface that comes.Adopt such device, guaranteed that the X2 interface that discharges is to use the low X2 interface of rate, by discharging the low X2 interface of utilization rate, can be used for setting up the X2 interface that other need be set up with resource.Guarantee the low X2 interface of utilization rate of first foundation, infinitely do not taken the X2 interface of resource-constrained always.Improved the utilization rate of X2 interface resource.

Description of drawings

Fig. 1 is that prior art eNB1 obtains in abutting connection with the schematic diagram of eNB2IP address;

Fig. 2 is the schematic diagram that prior art eNB1 successfully sets up in abutting connection with the eNB2X2 interface;

Fig. 3 is apparatus of the present invention structural representations;

Fig. 4 is the flow chart that eNB1 of the present invention discharges the X2 interface resource;

Fig. 5 is the flow chart of embodiments of the invention 1;

Fig. 6 is the flow chart of embodiments of the invention 2;

Fig. 7 is the flow chart of embodiments of the invention 3.

Embodiment

The invention provides a kind of X2 interface from method and the device set up,

Present embodiment provides a kind of X2 interface from the device of setting up, and as shown in Figure 3, comprises detection module, module is set, judge module and removing module;

Detection module is used for detecting in each sense cycle eNB from the X2 interface quantity of setting up, and testing result is sent to judge module;

Judge module is used to judge whether eNB surpasses default thresholding from the X2 interface quantity of setting up, and then further judges excessive amount m as if surpassing, and m X2 interface of setting up certainly of notice removing module deletion;

Removing module is used to delete m from the X2 interface of setting up, and discharges this m all resources of occupying on the X2 interface of setting up.

Further, judge module is also selected the minimum m of an interaction message number X2 interface of setting up certainly according to the interaction message quantity of each X2 interface, and m the X2 interface information of selecting from foundation is sent to removing module.

Further, module is set to be used for as X2 interface immediately self-built, for X2 interface is provided with the counter of statistics interaction message, and the counter of each sense cycle clear 0 each X2 interface when beginning, judge module obtains the interaction message quantity of each X2 interface by the value that reads each counter.

Judge module selects m X2 interface to be meant, the X2 interface of having set up certainly when judge module selects sense cycle to begin earlier, when from the X2 interface number of setting up during less than m, selecting the X2 interface of interaction message minimum number again in sense cycle the newly-built X2 interface, is m up to the X2 interface number of selecting.

The X2 interface number of setting up certainly that is made as eNB distribution is N;

When eNB is provided with most when setting up the X2 interface number and mostly be L, above-mentioned default thresholding is L;

When eNB is provided with from the highest occupancy of setting up X2 interface is Y, and above-mentioned default thresholding is N * Y;

When eNB was provided with setting up the X2 interface number certainly and being M of reservation, above-mentioned default thresholding was N-M.

Present embodiment provides a kind of X2 interface from the method for setting up, and as shown in Figure 4, may further comprise the steps:

Step 401:eNB powers on successfully, and timer T is set, and the present invention does not limit timer length; Be provided with from the thresholding of setting up X2 interface (promptly default thresholding);

Step 402: start the counter that timer and clear 0 is set up X2 interface separately;

This counter is used to add up the interaction message quantity on the X2 interface, and the interaction message of statistics comprises X2HANDOVER REQUEST (X2 handoff request) message and LOAD INFORMATION (load information) message, adds up above-mentioned 2 kinds of message sinks and sends sum.

Afterwards, before timer is not overtime if new X2 interface is arranged from setting up, the interaction message that counter is set and adds up this X2 interface for each newly-built X2 interface.

Step 403: timer expiry, eNB judge and currently whether surpass default thresholding from setting up X2 interface quantity, is execution in step 404 then, otherwise returns step 402.

Step 404: establishing the X2 interface that exceeds default thresholding is m, m X2 interface of setting up certainly of eNB deletion; Return step 402 behind the timer clear 0.

Preferably, eNB sorts to the counter of each X2 interface, selects m the X2 interface that wherein Counter Value is minimum to delete, and discharges the resource that takies on it; Further, delete the X2 interface that eNB has preferentially set up when this sense cycle begins, if the X2 interface number set up when sense cycle begins occurs less than need deletion number m, in this sense cycle, delete the newly-built X2 interface again, be m up to the deletion number.

Below describe the inventive method in detail by several embodiment

Embodiment 1

Below in conjunction with accompanying drawing 5, eNB1 is discharged and is described in further detail in abutting connection with the enforcement of the processing unit of the X2 interface resource of eNB.

As shown in Figure 5,

Step 501, eNB1 powers on successfully, and timer is set, and supposes timer length T=30 minute;

Suppose that the number that eNB1 goes up to distributing from the X2 interface of setting up is 10, the X2 interface resources occupation rate of Jian Liing must not surpass 70% certainly; Supposing has 0 X2 interface to exist this moment;

Step 502 starts timer, and establishing has 4 from the X2 interface of setting up in this sense cycle;

Immediately self-built as X2 interface, for this X2 interface is provided with the counter of adding up its interaction message, the interaction message of statistics comprises X2HANDOVER REQUEST message and LOADINFORMATION message, adds up above-mentioned 2 kinds of message sinks and sends sum.

Step 503, timer expiry;

Step 504, eNB1 judges whether need to delete X2 interface this moment, if need delete then execution in step 505, as if not needing to delete then directly execution in step 506;

Step 505, m X2 interface of deletion interaction message minimum number, execution in step 506 then;

In the present embodiment,,, therefore do not need to delete X2 interface less than occupancy thresholding 70% because of being 40% from the X2 interface resources occupation rate of setting up;

Step 506, the counter of statistics interaction message on each X2 interface is clear 0, and timer is clear 0, returns step 503 afterwards.

Embodiment 2:

Below in conjunction with accompanying drawing 6, eNB1 is discharged and is described in further detail in abutting connection with the enforcement of the processing unit of the X2 interface resource of eNB.

As shown in Figure 6, eNB1 is last for the number from the X2 interface distribution of setting up is 10, and establishing needs to reserve 5 from the X2 interface resource of setting up;

Step 601, eNB1 sets up timer T, supposes timer length T=40 minute, and supposing has 4 X2 interface to exist this moment;

Step 602, eNB1 starts timer, and empties each from the counter that is used to add up the interaction message number of the X2 interface of setting up, and the counter of each X2 interface begins to add up interaction message;

Before the timer expiry, establish and from having set up 2 X2 interface, the counter of statistics interaction message can be set for newly-built X2 interface, and the quantity of statistics interaction message;

Step 603, timer expiry;

Step 604, eNB1 judges whether need to delete X2 interface this moment, if need delete then execution in step 606, as if not needing to delete then directly execution in step 606;

Step 605, m X2 interface of deletion interaction message minimum number, execution in step 606 then;

In the present embodiment, thus the time set up 6 X2 interface resources, need to reserve 5 X2 interface resources, therefore need delete 1 X2 interface.

ENB1 sorts to the interaction message number on each X2 interface of statistics, deletion interaction message bar is counted the X2 interface of minimum, preferably, select the X2 interface deletion of interaction message minimum number 4 X2 interface that eNB1 has preferentially set up when this sense cycle begins, discharge all resources of occupying on it.

Step 606, the counter of statistics interaction message on each X2 interface is clear 0, and timer is clear 0, returns step 603 afterwards.

Embodiment 3:

Below in conjunction with accompanying drawing 7, eNB1 is discharged and is described in further detail in abutting connection with the enforcement of the processing unit of the X2 interface resource of eNB.

As shown in Figure 7, establishing the X2 interface resource number that needs to reserve is 4;

Step 701, eNB1 sets up timer T, supposes timer length T=50 minute, and establishing existing is 3 from setting up X2 interface;

Step 702, eNB 1 starts timer, and empties each counter that is used to add up the interaction message number from the X2 interface of setting up, and the counter of each X2 interface begins to add up interaction message;

If set up 7 X2 interface certainly again before the timer expiry, for these 7 newly-built X2 interface are provided with counter, and the self-built interaction message of immediately adding up;

Step 703, timer expiry;

Step 704, eNB1 judges whether need to delete X2 interface this moment, if need delete then execution in step 705, as if not needing to delete then directly execution in step 706;

Step 705, m X2 interface of deletion interaction message minimum number, execution in step 706 then;

In the present embodiment, because the X2 interface resource number that needs to reserve is 4,10 X2 interface have been set up, therefore need delete 4 X2 from setting up interface, eNB1 sorts to the counter of each X2 interface, and 4 X2 interface of gated counter value minimum are deleted, preferably, eNB1 deletes this sense cycle existing 3 X2 interface when beginning, and deletes a newly-built X2 interface in this sense cycle then.

Step 706, the counter of statistics interaction message on each X2 interface is clear 0, and timer is clear 0, returns step 703 afterwards.

Claims

1. an X2 interface comprises from the method for setting up:

Enode b regularly detects it from the X2 interface quantity of setting up, when described enode b in the sense cycle when the X2 interface quantity of setting up surpasses default thresholding, the enode b deletion exceeds m X2 interface of default thresholding.

2. the method for claim 1 is characterized in that:

Described method comprises that also enode b is added up each X2 interface interaction message quantity in sense cycle;

3. method as claimed in claim 1 or 2 is characterized in that:

Described method also comprises, and is immediately self-built as X2 interface, for described X2 interface is provided with the counter of statistics interaction message, the counter of clear 0 X2 interface of setting up separately when each sense cycle begins.

4. method as claimed in claim 2 is characterized in that:

During m X2 interface of described enode b deletion, the X2 interface of having set up certainly when the deletion sense cycle begins earlier, when described from the X2 interface number of setting up during less than m, selecting deleting of interaction message minimum number again in described sense cycle the newly-built X2 interface, is m up to the X2 interface number of deletion.

5. the method for claim 1 is characterized in that:

The X2 interface number of setting up certainly that is made as enode b distribution is N;

6. an X2 interface comprises detection module, judge module and removing module from the device of setting up; It is characterized in that:

7. device as claimed in claim 6 is characterized in that:

Described judge module is also selected the minimum m of an interaction message number X2 interface of setting up certainly according to the interaction message quantity of each X2 interface, and m the X2 interface information of selecting from foundation is sent to removing module.

8. as claim 6 or 7 described devices, it is characterized in that:

Described device also comprises module is set, is used for for described X2 interface counter being set as X2 interface is self-built immediately, and the counter of each sense cycle clear 0 X2 interface of setting up separately when beginning;

9. device as claimed in claim 7 is characterized in that:

Described judge module selects m X2 interface to be meant, the X2 interface of having set up certainly when judge module selects sense cycle to begin earlier, when described from the X2 interface number of setting up during less than m, selecting the X2 interface of interaction message minimum number again in described sense cycle the newly-built X2 interface, is m up to the X2 interface number of selecting.

10. device as claimed in claim 6 is characterized in that: