CN103491585A - Method and device for setting X2 links - Google Patents
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- CN103491585A CN103491585A CN201310432657.0A CN201310432657A CN103491585A CN 103491585 A CN103491585 A CN 103491585A CN 201310432657 A CN201310432657 A CN 201310432657A CN 103491585 A CN103491585 A CN 103491585A
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Abstract
The invention relates to the technical field of communication, and discloses a method and device for setting X2 links. According to the scheme, currently, even if setting of an X2 link between a home terminal and an opposite terminal conflicts, under the situation, two X2 links can be set, the two terminals can not continue to set the X2 links, in other words, the situation of successfully setting the two X2 links can not be caused, current setting of the X2 links of the two terminals is interrupted, and after the random time is prolonged, the setting of the X2 links is tried again until the X2 links are successfully set. Therefore, the two X2 links can not be set between two eNBs, abnormal interaction between the two eNBs is avoided, and the terminals can be successfully switched between cells.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of method and device of setting up the X2 link.
Background technology
LTE(Long Terms Evolution, Long Term Evolution) network is 3GPP(3rd Generation Partnership Project, 3G (Third Generation) Moblie standardization body) mobile wireless access system of future generation, comprise equipment of the core network and eNB(eNode B, evolution base station), wherein, consult shown in Figure 1A, between equipment of the core network and eNB, use the S1 interface to communicate; Due to mutual demand also being arranged between eNB, for example, the signaling when user is switched in community and service message exchange, therefore, also need to have interface between eNB, be specially X2 interface.
The signaling plane host-host protocol of X2 interface is SCTP(Stream Control Transmission Protocol, SCTP), the Stream Control Transmission Protocol regulation, before carrying out alternately between eNB, need to set up the X2 link in advance.
In prior art, X2 link establishment process as shown in Figure 1B:
Step 4～7:eNB1 is by the configuration transmitting procedure of S1 interface, the transport layer address that obtains target eNB 2;
Step 8:eNB1 and eNB2 set up the X2 link establishment.
Situation for dynamic-configuration X2 link establishment, if two eNB are adjacent while having found the other side for adjacent area simultaneously, can send and set up X2 link request message to opposite end simultaneously between two eNB, capital configuration local terminal is server end, and now, the X2 link establishment clashes, will set up in this case two X2 links, now, mutual between two eNB can abnormal, causes the community handoff failure of terminal.
Summary of the invention
The embodiment of the present invention provides a kind of method and device of the X2 of foundation link, in order to the problem of the community handoff failure that solves mutual abnormal between the eNB existed in prior art, terminal.
The concrete technical scheme that the embodiment of the present invention provides is as follows:
First aspect, provide a kind of method of the X2 of foundation link, comprising:
Whether the foundation of judging the X2 link between the current and opposite end of local terminal clashes, if, interrupt the X2 link that the local terminal current request is set up, and after the random duration of time delay, send an X2 request for building link message to described opposite end, and return to the step whether foundation of the X2 link between the current and opposite end of described judgement local terminal clashes; Otherwise, complete the foundation of an X2 link.
In conjunction with first aspect, in the first in possible implementation, judge whether the foundation of the X2 link between the current and opposite end of local terminal clashes, specifically comprise:
Send a described X2 request for building link message to described opposite end according to the Internet protocol IP address information of described opposite end, wherein, a described X2 request for building link message at least comprises the IP address information of described local terminal;
Receive the 2nd X2 request for building link message, and judge the IP address information that whether comprises described opposite end in described the 2nd X2 request for building link message, and whether the X2 link establishment triggered by a described X2 request for building link message does not complete.
The possible implementation in conjunction with the first of first aspect, at the second in possible implementation, send a described X2 request for building link message based on SCTP SCTP to described opposite end, or receive described the 2nd X2 request for building link message that described opposite end sends.
In conjunction with first aspect, first aspect first to the possible implementation of the second, at the third, in possible implementation, the span of described random duration is 1000ms～10000ms.
In conjunction with first aspect, first aspect first to the third possible implementation, in the 4th kind of possible implementation, the described foundation that completes an X2 link specifically comprises:
Set up the SCTP link;
And, by described SCTP link and opposite end exchange application configuration data, complete the foundation of a described X2 link.
Like this, situation for dynamic-configuration X2 link establishment, if two eNB are adjacent while having found the other side for adjacent area simultaneously, can send and set up X2 link request message to opposite end simultaneously between two eNB, now, the foundation of the X2 link between current and opposite end clashes, will set up in this case two X2 links, the X2 link can not continued to set up in two ends, that is to say, can not cause the situation of successfully setting up two X2 links, but local terminal interrupts the foundation of a current X2 link, after the random duration of time delay, reattempt the foundation of carrying out an X2 link, until an X2 link is successfully set up, like this, owing to can not setting up two X2 links between two eNB, therefore, avoided the mutual abnormal between two eNB, the terminal success is switched between community.
Second aspect, provide a kind of base station, comprising:
Whether determination module, clash for the foundation of judging the X2 link between the current and opposite end of local terminal;
The message module, for in the situation that judge that the foundation of the X2 link between the current and opposite end of local terminal clashes, interrupt the X2 link that the local terminal current request is set up, and after the random duration of time delay, send an X2 request for building link message to described opposite end, and return to the step whether foundation of the X2 link between the current and opposite end of described judgement local terminal clashes;
The link establishment module, in the situation that judge that the foundation of the X2 link between the current and opposite end of local terminal does not clash, and completes the foundation of an X2 link.
In conjunction with first aspect, in the first in possible implementation, described message module specifically for:
Send a described X2 request for building link message to described opposite end according to the Internet protocol IP address information of described opposite end, wherein, a described X2 request for building link message at least comprises the IP address information of described local terminal;
Receive the 2nd X2 request for building link message, and judge the IP address information that whether comprises described opposite end in described the 2nd X2 request for building link message, and whether the X2 link establishment triggered by a described X2 request for building link message does not complete.
The possible implementation in conjunction with the first of first aspect, at the second in possible implementation, described message module specifically for:
Send a described X2 request for building link message based on SCTP SCTP to described opposite end, or receive described the 2nd X2 request for building link message that described opposite end sends.
In conjunction with first aspect, first aspect first to the possible implementation of the second, at the third, in possible implementation, the span of the random duration of described message module time delay is 1000ms～10000ms.
In conjunction with first aspect, first aspect first to the third possible implementation, in the 4th kind of possible implementation, described link establishment module specifically for:
Set up the SCTP link;
And, by described SCTP link and opposite end exchange application configuration data, complete the foundation of a described X2 link.
Like this, situation for dynamic-configuration X2 link establishment, if two eNB are adjacent while having found the other side for adjacent area simultaneously, can send and set up X2 link request message to opposite end simultaneously between two eNB, now, the foundation of the X2 link between current and opposite end clashes, will set up in this case two X2 links, the X2 link can not continued to set up in two ends, that is to say, can not cause the situation of successfully setting up two X2 links, but local terminal interrupts the foundation of a current X2 link, after the random duration of time delay, reattempt the foundation of carrying out an X2 link, until an X2 link is successfully set up, like this, owing to can not setting up two X2 links between two eNB, therefore, avoided the mutual abnormal between two eNB, the terminal success is switched between community.
Beneficial effect of the present invention is as follows:
In the embodiment of the present invention, whether the foundation of judging the X2 link between the current and opposite end of local terminal clashes, if, interrupt the X2 link that the local terminal current request is set up, and after the random duration of time delay, send an X2 request for building link message to opposite end, and return to the step whether foundation of judging the X2 link between the current and opposite end of local terminal clashes, otherwise, complete the foundation of an X2 link, like this, situation for dynamic-configuration X2 link establishment, if two eNB are adjacent while having found the other side for adjacent area simultaneously, can send and set up X2 link request message to opposite end simultaneously between two eNB, now, the foundation of the X2 link between current and opposite end clashes, will set up in this case two X2 links, the X2 link can not continued to set up in two ends, that is to say, can not cause the situation of successfully setting up two X2 links, but local terminal interrupts the foundation of a current X2 link, after the random duration of time delay, reattempt the foundation of carrying out an X2 link, until an X2 link is successfully set up, like this, owing to can not setting up two X2 links between two eNB, therefore, avoided the mutual abnormal between two eNB, the terminal success is switched between community.
The accompanying drawing explanation
The schematic diagram that Figure 1A is LTE network configuration in prior art;
The schematic diagram that Figure 1B is X2 link establishment process in prior art;
The detailed maps that Fig. 2 is X2 link establishment process in the embodiment of the present invention;
The embodiment that Fig. 3 is X2 link establishment process in the embodiment of the present invention;
The illustrative view of functional configuration that Fig. 4 is base station in the embodiment of the present invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment obtained, belong to the scope of protection of the invention.
In addition, term " system " and " network " often are used interchangeably in this article herein.Herein term " and/or ", be only a kind of incidence relation of describing affiliated partner, can there be three kinds of relations in expression, for example, A and/or B can mean: individualism A exists A and B, these three kinds of situations of individualism B simultaneously.In addition, alphabetical "/", generally mean that forward-backward correlation is to liking a kind of relation of "or" herein.
For fear of the mutual abnormal between eNB, the terminal success is switched between community, in the embodiment of the present invention, propose a kind of method of the X2 of foundation link: be specially: whether the foundation of judging the X2 link between the current and opposite end of local terminal clashes, if, interrupt the X2 link that the local terminal current request is set up, and after the random duration of time delay, send an X2 request for building link message to opposite end, and return to the step whether foundation of judging the X2 link between the current and opposite end of local terminal clashes, otherwise, complete the foundation of an X2 link, like this, situation for dynamic-configuration X2 link establishment, if two eNB are adjacent while having found the other side for adjacent area simultaneously, can send and set up X2 link request message to opposite end simultaneously between two eNB, now, the foundation of the X2 link between current and opposite end clashes, will set up in this case two X2 links, the X2 link can not continued to set up in two ends, that is to say, can not cause the situation of successfully setting up two X2 links, but local terminal interrupts the foundation of a current X2 link, after the random duration of time delay, reattempt the foundation of carrying out an X2 link, until an X2 link is successfully set up, like this, owing to can not setting up two X2 links between two eNB, therefore, avoided the mutual abnormal between two eNB, the terminal success is switched between community.
Below in conjunction with Figure of description, the preferred embodiment of the present invention is elaborated, be to be understood that, preferred embodiment described herein is only for description and interpretation the present invention, be not intended to limit the present invention, and, in the situation that do not conflict, embodiment and the feature in embodiment in the application can combine mutually.
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is elaborated.
Consult shown in Fig. 2, in the embodiment of the present invention, the detailed process of setting up the X2 link is as follows:
Step 200: whether the foundation of judging the X2 link between the current and opposite end of local terminal clashes, if perform step 210; Otherwise, perform step 220;
Step 210: interrupt the X2 link that the local terminal current request is set up, and, after the random duration of time delay, send an X2 request for building link message to opposite end, and return to step 200;
Step 220: complete the foundation of an X2 link.
In the embodiment of the present invention, judge that mode that whether foundation of the X2 link between the current and opposite end of local terminal clashes has multiple, preferably, can be in the following way:
Send an X2 request for building link message to opposite end according to the IP address information of opposite end, wherein, an X2 request for building link message at least comprises the IP address information of local terminal;
Receive the 2nd X2 request for building link message, and judge the IP address information that whether comprises opposite end in the 2nd X2 request for building link message, and whether the X2 link establishment triggered by an X2 request for building link message does not complete.
In the embodiment of the present invention, send an X2 request for building link message based on SCTP, or receive the 2nd X2 request for building link message all based on SCTP.
For example: the IP address information of eNB1 based on eNB2 sends an X2 request for building link message to eNB2, wherein, the one X2 request for building link message at least comprises the IP address information of eNB1, then, eNB1 receives the 2nd X2 request for building link message, and judge the IP address information that whether comprises eNB2 in the 2nd X2 request for building link message, and whether the X2 link establishment triggered by an X2 request for building link message completes.
In the embodiment of the present invention, no matter be for local terminal or for opposite end, the condition that triggers local terminal or opposite end transmission X2 request for building link message has multiple, preferably, when local terminal determines that while with opposite end, neighboring BS relationship being arranged, local terminal can send to opposite end an X2 request for building link message, in like manner, when opposite end determines that while with local terminal, neighboring BS relationship being arranged, opposite end can send the 2nd X2 request for building link message to local terminal.
Further, in order to improve internet security, in the embodiment of the present invention, local terminal is after sending an X2 request for building link message to opposite end, opposite end be not set up immediately and local terminal between an X2 link, but first to judge whether local terminal has the authority (accessing the authority of opposite end) of setting up an X2 link, in the situation that determine that local terminal has the authority of setting up an X2 connection, then carry out the foundation of an X2 link.
In the embodiment of the present invention, the mode whether definite local terminal that sends an X2 request for building link message in opposite end has the authority of setting up an X2 link has multiple, preferably, local terminal comprises self IP(Internet Protocol at an X2 request for building link message, Internet protocol) address, then, opposite end is after receiving an X2 request for building link message, parse IP address wherein, and determine in the IP address of self storing while having the IP address parsed, the data channel of corresponding equipment with regard to the IP address (this data channel only allow the equipment with the IP address of appointment carry out mutual data by).Now, in an X2 request for building link message, not only to comprise the port information of opposite end, also will comprise the IP address of local terminal.
For example, eNB1 (not only will comprise the port information of eNB2 in an X2 request for building link message to eNB2 transmission the one X2 request for building link message, the IP address that also will comprise eNB1) after, eNB2 be not set up immediately and eNB1 between an X2 link, but first judge whether eNB1 has and eNB2 between set up the authority of an X2 link, concrete judgment mode is: determine in the IP address of storing in eNB2 the IP address that whether comprises that an X2 request for building link message comprises, if, determine that eNB1 has and eNB2 between set up the authority of an X2 link, then, an X2 link between foundation and eNB1.
Top embodiment is that to take eNB1 be example to eNB2, sending an X2 request for building link message, that is to say, eNB1 is as client, and eNB2 is as server, in actual applications, may be also that eNB2 is as client, eNB1, as server, now, is exactly that eNB1 judges whether eNB2 has the authority of the 2nd X2 link between foundation and eNB1, detailed process and said process are similar, at this, describe in detail no longer one by one.
In the embodiment of the present invention, the mode of the X2 link that interruption local terminal current request is set up has multiple, preferably, removes all resource allocations relevant with an X2 link of local terminal, in actual applications, also has other modes, at this, describes in detail no longer one by one.
In actual applications, if delay and again set up an X2 link while introducing, local terminal very likely and the foundation of the X2 link between opposite end again clash, worst situation is collision loop, can't complete all the time and set up an X2 link.Further, in order to avoid as far as possible the link setup conflict again to occur, break the collision loop that an X2 link establishment may occur, improve the efficiency of successfully setting up an X2 link, reduce the conflict number of times of the foundation generation of an X2 link, in the embodiment of the present invention, the time delay granularity is set to 100ms, and the span of time delay is 1000ms～10000ms.
In the embodiment of the present invention, the mode that an X2 link is successfully set up has multiple, preferably, first sets up the SCTP link; Then, by SCTP link and opposite end exchange application configuration data, complete the foundation of an X2 link, wherein, to set up special data channel before setting up the SCTP link, then, based on special data channel and opposite end exchange application configuration data, complete the foundation of an X2 link.
In order to understand better the embodiment of the present invention, below provide concrete application scenarios, for the process of establishing of X2 link, make and describing in further detail, specifically as shown in Figure 3:
Step 300:eNB1 determines and to send an X2 request for building link message according to the IP address information of eNB2 to eNB2 while with eNB2, neighboring BS relationship being arranged, and wherein, an X2 request for building link message at least comprises the IP address of eNB1;
Step 310:eNB2 determines and to send the 2nd X2 request for building link message according to the IP address information of eNB1 to eNB1 while with eNB1, neighboring BS relationship being arranged;
After the IP address of the eNB1 that step 320:eNB2 comprises according to an X2 request for building link message determines that eNB1 has the authority of setting up an X2 link, set up the data channel for eNB1;
After step 330:eNB1 receives the 2nd X2 request for building link message, and judge that the 2nd X2 request for building link message comprises the IP address information of eNB1, and the X2 link establishment triggered by an X2 request for building link message determines that the foundation of the X2 link between current and eNB2 clashes while not completing;
Step 340:eNB1 interrupts the foundation of a current X2 link;
After step 350:eNB2 receives an X2 request for building link message, and judge that an X2 request for building link message comprises the IP address information of eNB1, and the X2 link establishment triggered by the 2nd X2 request for building link message determines that the foundation of the X2 link between current and eNB1 clashes while not completing;
Step 360:eNB2 interrupts the foundation of current the 2nd X2 link;
After step 370:eNB1 time delay 1100ms, to eNB2, again send an X2 request for building link message, carry out the foundation of X2 link next time;
Now, due to eNB2, still in the time delay state, also do not carry out the 2nd X2 link establishment next time, therefore, eNB1 does not find that the foundation of the X2 link between current and eNB2 clashes, and does not just interrupt the foundation of an X2 link.
Step 380:eNB1 sets up the SCTP link;
Step 390:eNB1 also applies configuration data by SCTP link and opposite end exchange, completes the foundation of an X2 link.
As shown in Figure 4, the ，Gai base station, a kind of base station that the embodiment of the present invention provides comprises:
Whether determination module 400, clash for the foundation of judging the X2 link between the current and opposite end of local terminal;
Message module 410, for in the situation that judge that the foundation of the X2 link between the current and opposite end of local terminal clashes, interrupt the X2 link that the local terminal current request is set up, and after the random duration of time delay, send an X2 request for building link message to opposite end, and return to the step whether foundation of judging the X2 link between the current and opposite end of local terminal clashes;
Link establishment module 420, in the situation that judge that the foundation of the X2 link between the current and opposite end of local terminal does not clash, and completes the foundation of an X2 link.
In sum, in the embodiment of the present invention, whether the foundation of judging the X2 link between the current and opposite end of local terminal clashes, if, interrupt the X2 link that the local terminal current request is set up, and, after the random duration of time delay, send an X2 request for building link message to opposite end, and return to the step whether foundation of judging the X2 link between the current and opposite end of local terminal clashes, otherwise, complete the foundation of an X2 link, like this, situation for dynamic-configuration X2 link establishment, if two eNB are adjacent while having found the other side for adjacent area simultaneously, can send and set up X2 link request message to opposite end simultaneously between two eNB, now, the foundation of the X2 link between current and opposite end clashes, will set up in this case two X2 links, the X2 link can not continued to set up in two ends, that is to say, can not cause the situation of successfully setting up two X2 links, but local terminal interrupts the foundation of a current X2 link, after the random duration of time delay, reattempt the foundation of carrying out an X2 link, until an X2 link is successfully set up, like this, owing to can not setting up two X2 links between two eNB, therefore, avoided the mutual abnormal between two eNB, the terminal success is switched between community.
The present invention describes with reference to flow chart and/or the block diagram of method, equipment (system) and computer program according to the embodiment of the present invention.Should understand can be in computer program instructions realization flow figure and/or block diagram each flow process and/or the flow process in square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce for realizing the device in the function of flow process of flow chart or a plurality of flow process and/or a square frame of block diagram or a plurality of square frames.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction be stored in this computer-readable memory produce the manufacture that comprises command device, this command device is realized the function in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, make and carry out the sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out on computer or other programmable devices is provided for realizing the step of the function in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the embodiment of the present invention the embodiment of the present invention.Like this, if within these of the embodiment of the present invention are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. a method of setting up the X2 link, is characterized in that, comprising:
Whether the foundation of judging the X2 link between the current and opposite end of local terminal clashes, if, interrupt the X2 link that the local terminal current request is set up, and after the random duration of time delay, send an X2 request for building link message to described opposite end, and return to the step whether foundation of the X2 link between the current and opposite end of described judgement local terminal clashes; Otherwise, complete the foundation of an X2 link.
2. the method for claim 1, is characterized in that, judges whether the foundation of the X2 link between the current and opposite end of local terminal clashes, and specifically comprises:
Send a described X2 request for building link message to described opposite end according to the Internet protocol IP address information of described opposite end, wherein, a described X2 request for building link message at least comprises the IP address information of described local terminal;
Receive the 2nd X2 request for building link message, and judge the IP address information that whether comprises described opposite end in described the 2nd X2 request for building link message, and whether the X2 link establishment triggered by a described X2 request for building link message does not complete.
3. method as claimed in claim 2, is characterized in that, sends a described X2 request for building link message to described opposite end based on SCTP SCTP, or receive described the 2nd X2 request for building link message that described opposite end sends.
4. as claim 1,2 or 3 described methods, it is characterized in that, the span of described random duration is 1000ms～10000ms.
5. the method for claim 1, is characterized in that, the described foundation that completes an X2 link specifically comprises:
Set up the SCTP link;
And, by described SCTP link and opposite end exchange application configuration data, complete the foundation of a described X2 link.
6. a base station, is characterized in that, comprising:
Whether determination module, clash for the foundation of judging the X2 link between the current and opposite end of local terminal;
The message module, for in the situation that judge that the foundation of the X2 link between the current and opposite end of local terminal clashes, interrupt the X2 link that the local terminal current request is set up, and after the random duration of time delay, send an X2 request for building link message to described opposite end, and return to the step whether foundation of the X2 link between the current and opposite end of described judgement local terminal clashes;
The link establishment module, in the situation that judge that the foundation of the X2 link between the current and opposite end of local terminal does not clash, and completes the foundation of an X2 link.
7. base station as claimed in claim 6, is characterized in that, described message module specifically for:
Send a described X2 request for building link message to described opposite end according to the Internet protocol IP address information of described opposite end, wherein, a described X2 request for building link message at least comprises the IP address information of described local terminal;
Receive the 2nd X2 request for building link message, and judge the IP address information that whether comprises described opposite end in described the 2nd X2 request for building link message, and whether the X2 link establishment triggered by a described X2 request for building link message does not complete.
8. base station as claimed in claim 7, is characterized in that, described message module specifically for:
Send a described X2 request for building link message based on SCTP SCTP to described opposite end, or receive described the 2nd X2 request for building link message that described opposite end sends.
9. as claim 6,7 or 8 described base stations, it is characterized in that, the span of the random duration of described message module time delay is 1000ms～10000ms.
10. base station as claimed in claim 6, is characterized in that, described link establishment module specifically for:
Set up the SCTP link;
And, by described SCTP link and opposite end exchange application configuration data, complete the foundation of a described X2 link.
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|---|---|---|---|---|
| CN103906117A (en) * | 2014-03-31 | 2014-07-02 | 大唐移动通信设备有限公司 | X2 link conflict resolution method and device |
| CN103906117B (en) * | 2014-03-31 | 2017-08-01 | 大唐移动通信设备有限公司 | A kind of X2 links contention resolution and device |
| CN104902501A (en) * | 2015-05-28 | 2015-09-09 | 大唐移动通信设备有限公司 | Method for managing links among base stations and base station |
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| CN103491585B (en) | 2017-01-25 |
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