CN105307225B - The correlating method of X2 interface switching flow and Uu interface signaling process inside a kind of LTE system - Google Patents
The correlating method of X2 interface switching flow and Uu interface signaling process inside a kind of LTE system Download PDFInfo
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- CN105307225B CN105307225B CN201510604330.6A CN201510604330A CN105307225B CN 105307225 B CN105307225 B CN 105307225B CN 201510604330 A CN201510604330 A CN 201510604330A CN 105307225 B CN105307225 B CN 105307225B
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Abstract
The present invention provides X2 interface switching flow inside a kind of LTE system and the correlating method of Uu interface signaling process, including：From source Uu interfaces extraction Cell Identity parameters, C RNTI parameters；From X2 interface extraction source Cell Identity parameters, source C RNTI parameters；By above-mentioned Cell Identity parameters and C RNTI parameters, it is compared with source Cell Identity parameters, source C RNTI parameters, if identical, the signaling process of source Uu interface signaling process and X2 interface is associated respectively；Cell Identity parameters, C RNTI parameters are extracted from target side Uu interface signaling messages；Target side Cell Identity parameters, target side C RNTI parameters are extracted from the X2AP agreements of X2 interface；By above-mentioned Cell Identity parameters, C RNTI parameters, it is compared with target side Cell Identity parameters, target side C RNTI parameters, if relevant parameter is identical, the signaling process of target side Uu interface signaling process and X2 interface is associated respectively.Whereby, present invention processing is simple and practicable, highly practical.
Description
Technical field
The present invention relates to X2 interface switching flow and Uu interfaces inside field of communication technology more particularly to a kind of LTE system
The correlating method of signaling process.
Background technology
X2 interface is the interface between eNodeB (evolved Node B, base station), supports the direct biography of data and signaling
It is defeated.It is interconnected between eNodeB by X2 interface, forms mesh network.Uu interfaces (are also named and are wirelessly connect for air interface
Mouthful), it is UE (User Equipment, user equipment) and E-UTRAN (Evolved Universal Terrestrial
Radio Access Network, evolution type universal terrestrial Radio Access Network) channel between node eNodeB, generation it is main
It is the signaling process of RRC (Radio Resource Control, wireless heterogeneous networks) agreement.At present, substantially there is following technology
Scheme can realize the association of X2 interface switching flow and Uu interface signaling process in LTE system：
1st, when the data acquisition modes of Uu interfaces are hard acquisition mode, while Uu interfaces, the S1-MME of LTE network are monitored
Interface, X2 interface.The RRC flows of Uu interfaces with the S1AP flows of S1-MME interface are associated with first, are got in S1AP message
The MME UE S1AP ID parameters of distribution；Then " MME UE are extracted from the Handover Request message of X2 interface
The two " MME UE S1AP ID " parameters are compared, if equal, be shown to be and belong to same UE by S1AP ID " parameters
Signaling process, it can be associated with.MME is remained unchanged when X2 switchings are utilized in this method, parameter MME UE S1AP ID
S1-MME interface is carried out the association of Uu interfaces and X2 interface by the characteristics of also remaining unchanged as tie.
2nd, when the data acquisition modes of Uu interfaces are soft acquisition mode, that is, eNodeB equipment is allowed directly to spue RRC information
Mode, be associated also with MME UE S1AP ID parameters, unlike the 1st kind of mode, at this moment eNodeB
Equipment directly discharge MME UE S1AP ID parameters, so S1-MME interface need not be monitored.For example, China Mobile is frequently with this
Mode.
There are following defects for the above-mentioned prior art：
1st, it when data are acquired using hard acquisition mode, is associated using MME UE S1AP ID parameters, this method
There are it is following the defects of：When have to monitoring one additional S1-MME interface, in the case where network condition does not have this
Kind method can not be implemented；Second is that the data due to having handled three interfaces, can bring the time between processing logic complexity, interface
The problems such as asynchronous, hydraulic performance decline.
2nd, when data are acquired using soft acquisition mode, using MME UE S1AP ID parameter associations, although this mode
Processing is simple, but also has limitation, and versatility is not strong, as China Telecom, China Unicom do not have in this way if at present.
In addition when eNodeB equipment does not have soft acquisition function, this method can not also be implemented.
In summary, the existing technology has inconveniences and defects in actual use, so it is necessary to be improved.
Invention content
For it is above-mentioned the defects of, the purpose of the present invention is to provide X2 interface switching flow inside a kind of LTE system and Uu
The correlating method of interface signaling process can easily realize X2 interface switching flow and Uu interface signalings inside LTE system
The association of flow, processing is simple and practicable, highly practical.
To achieve these goals, the present invention provides X2 switching flows and Uu interface signaling process inside a kind of LTE system
Correlating method, the step of the method includes the signaling process of source Uu interface signaling process and X2 interface is associated,
And the step of being associated the signaling process of target side Uu interface signaling process and X2 interface；
Wherein, the step of signaling process of source Uu interface signaling process and X2 interface being associated includes：
The extracting parameter from source Uu interface signaling messages：Cell Identity parameters, C-RNTI parameters；
The extracting parameter from the Handover Request message of X2 interface：Source Cell Identity parameters, source C-
RNTI parameters；
The Cell Identity parameters and C-RNTI parameters that will be extracted from source Uu interface signaling messages, respectively with from
Source Cell Identity parameters, the source C-RNTI parameters extracted in the Handover Request message of X2 interface carry out
Compare, if relevant parameter is identical, the signaling process of source Uu interface signaling process and X2 interface is associated；
Wherein, the step of signaling process of target side Uu interface signaling process and X2 interface being associated includes：
The extracting parameter from target side Uu interface signaling messages：Cell Identity parameters, C-RNTI parameters；
The extracting parameter from the Handover Request message of X2 interface：Target side Cell Identity parameters, and from
Target side C-RNTI parameters are extracted in the Handover Request Acknowledge message of X2AP agreements；
The parameter that will be extracted from target side Uu interfaces：Cell Identity parameters, C-RNTI parameters, respectively with being connect from X2
Target side Cell Identity parameters, the target side C-RNTI parameters of mouth extraction are compared, will if relevant parameter is identical
The signaling process of target side Uu interface signaling process and X2 interface is associated.
Further, since Cell Identity parameters are 28 bit, wherein high 20bit is eNodeB Id parameters, it is low
8bit is Cell Id, therefore the step of extraction Cell Identity parameters could alternatively be extraction eNodeB Id parameters
The step of with Cell Id parameters, described the step of being compared to corresponding Cell Identity parameters, could alternatively be to phase
The step of eNodeB Id parameters and Cell Id parameters answered are compared.
Further, the step of extraction eNodeB Id parameters could alternatively be the step of extraction eNodeB IP parameters,
The step of being compared to corresponding eNodeB Id parameters could alternatively be what corresponding eNodeB IP parameters were compared
Step.
X2 interface, which cuts flow and the correlating method of Uu interface signaling process, inside the LTE system of the present invention can reach as follows
Technique effect：
1st, it does not need to additionally monitor S1-MME interface, only need to monitor Uu interfaces and X2 interface；
2nd, no matter Uu interfaces are using soft acquisition mode or hard acquisition mode, it can realize that flow is associated with；
3rd, treatment effeciency and performance are improved.
Description of the drawings
Fig. 1 is the signaling process figure of one embodiment of the invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The basic thought of the present invention is as follows：
When using soft acquisition mode when, the head of RRC information can include eNodeB id, cell id, C-RNTI this three
A parameter；When using hard acquisition mode, this 3 parameters can also be obtained from the related news of Uu interfaces.
With reference to figure 1, when the switching based on X2 interface occurs, source eNodeB (source eNB, the source of source
ENodeB, source base station) it can be sent to the target eNodeB (target eNB, target eNodeB, target BS) of target side
The Handover Request message ([X2AP] Handover Request (target Cell Id) i.e. in figure) of X2AP agreements,
" RRC Context " parameter is wherein included, " RRC Handover Preparation are contained again in RRC Context parameters
Information " parameters ([RRC] Handover Preparation Information i.e. in figure (cell Identity,
SourceUE-identity)), drilled through by multistage, " cellAccessRelatedInfo " parameter may finally be obtained, this
Cell Identity parameters can be extracted inside parameter, i.e. cell-of-origin identifies.Cell Identity parameters are 28 bit
(position), wherein high 20bit is eNodeB Id parameters, low 8bit is Cell Id." RRC in similary processing RRC Context
Handover Preparation Information " parameters, drill through by multistage, may finally obtain " sourceUE-
Identity " parameters, here it is the C-RNTI parameters that UE is used in cell-of-origin.By above-mentioned parameter, cell-of-origin side can be realized
The association of Uu Interface Flowcharts and X2 interface flow.
Then the association of target side Uu interfaces and X2 interface is reprocessed.
Target side target eNodeB after the Handover Request message of source source eNodeB is received,
Target Cell Id parameters can be extracted, are 28bit, wherein high 20bit is target eNodeB Id, least-significant byte
For the Cell Id in the target eNodeB；After target eNodeB distribute resource, to source eNodeB loopbacks
Handover Request Acknowledge message, wherein containing " Target eNB To Source eNB
Transparent Container " parameters, the parameter are a containers, contain RRC information " Handover between node
Command ", internal and nested complete " RRC Connection Reconfiguration " message, disappears at this
In breath, an important parameter is contained：The identity C-RNTI parameters that UE is used in Target cell, i.e., new UE- in figure
Identity.By above-mentioned parameter, the association of target side Uu interface signaling process and X2 interface signaling process can be realized.
Specifically, the correlating method packet of X2 interface switching flow and Uu interface signaling process inside the LTE system of the present invention
Include the step of being associated the signaling process of source Uu interface signaling process and X2 interface and by target side Uu interface signalings
The step of signaling process of flow and X2 interface is associated.
The step of wherein signaling process of source Uu interface signaling process and X2 interface is associated includes the following steps：
The extracting parameter from source Uu interface signaling messages：ENodeB Id parameters, Cell Id parameters, C-RNTI parameters.
As described above, when using soft acquisition mode when, the head of RRC information can include eNodeB Id, Cell Id, C-RNTI this three
A parameter can therefrom extract three parameters.It, can be from the related news of source Uu interfaces when using hard acquisition mode
Obtain these three parameters.As noted previously, as between Cell Identity parameters and eNodeB Id parameters, Cell Id parameters
Relationship, above-mentioned step can also be replaced with extracts Cell Identity parameters and C- from source Uu interface signaling messages
RNTI parameters.
The extracting parameter from the Handover Request message of X2 interface.Handover from X2AP agreements
Five parameters can be extracted in Request message：Source eNodeB Id parameters, source Cell Id parameters, source C-RNTI
These three parameters of parameter and target side eNodeB Id parameters, target side Cell Id the two parameters.Similarly, the step
Can also replace with can extract source Cell Identity ginsengs from the Handover Request message in X2AP agreements
Number, source C-RNTI parameters and target side Cell Identity parameters.
The signaling process of source Uu interfaces and X2 interface is associated.
The parameter that will be extracted from source Uu interface signaling messages：ENodeB Id parameters, Cell Id parameters, C-RNTI ginsengs
It counts, respectively the parameter with being extracted from X2 interface：Source eNodeB Id parameters, source Cell Id parameters, source C-RNTI parameters
Be compared, if relevant parameter is identical, then it represents that be to belong to same UE, it is possible to by source Uu interface signaling process and
The signaling process of X2 interface is associated.Similarly, above-mentioned comparison step can also be to carrying in source Uu interface signaling messages
Cell Identity parameters, C-RNTI parameters and source Cell Identity parameters, the source C-RNTI parameters taken is compared
Compared with.If the Cell Identity parameters, C-RNTI parameters and the source Cell that are extracted from source Uu interface signaling messages
Identity parameters, source C-RNTI parameters are identical, then it represents that are to belong to same UE, it is possible to believe source Uu interfaces
The signaling process of flow and X2 interface is enabled to be associated.
Wherein, the step of signaling process of target side Uu interface signaling process and X2 interface being associated includes following step
Suddenly：
The extracting parameter from target side Uu interface signaling messages：ENodeB Id parameters, Cell Id parameters, C-RNTI ginsengs
Number.As described above, when using soft acquisition mode, eNodeB Id, Cell Id, C-RNTI can be included on the head of RRC information
These three parameters can extract three parameters from RRC information.When using hard acquisition mode, it can be connect from target side Uu
These three parameters are obtained in the related news of mouth.Similarly, above-mentioned step can also be replaced with from target side Uu interface signalings
Cell Identity parameters and C-RNTI parameters are extracted in message.
The extracting parameter from the Handover Request Acknowledge message of X2 interface.
A relevant parameter can be extracted from the Handover Request Acknowledge message of X2AP agreements,
That is the target side C-RNTI parameters that UE is used in target side cell.With reference to from the target in Handover Request message
Target side eNodeB Id parameters, the target side Cell Id parameters extracted in Cell Id parameters form target side Uu interfaces and X2
The relevant parameter group of Interface Flowchart：Target side eNodeB Id parameters, target side Cell Id parameters, target side C-RNTI parameters.
Or composition target side Cell Identity parameters, the parameter group of target side C-RNTI parameters.
The signaling process of target side Uu interfaces and X2 interface is associated.
The parameter that will be extracted from target side Uu interfaces：ENodeB Id parameters, Cell Id parameters, C-RNTI parameters respectively and
Target side eNodeB Id parameters, target side Cell Id parameters, the target side C-RNTI parameters extracted from X2 interface carry out respectively
Compare, if relevant parameter is identical, it is to belong to same UE to show flow, it is possible to by target side Uu interface signaling process
It is associated with the signaling process of X2 interface.Similarly, above-mentioned comparison step can also be to target side Uu interface signaling messages
Cell Identity parameters, C-RNTI parameters and target side Cell Identity parameters, the target side C-RNTI ginsengs of middle extraction
Number is compared.If the Cell Identity parameters, C-RNTI parameters and the mesh that are extracted from target side Uu interface signaling messages
Mark side Cell Identity parameters, target side C-RNTI parameters are identical, then it is to belong to same UE to show flow, so that it may
The signaling process of target side Uu interface signaling process and X2 interface to be associated.
So far, source Uu interfaces, X2 interface, the signaling process that belongs to a UE on target side Uu interfaces realize association.
The present invention extracts the identity that UE is used in cell-of-origin and Target cell, i.e. { eNodeB Id, CellId, C-
RNTI } triplet parameters, realize the pass with source Uu interfaces and target side Uu interface signaling process with this triplet parameters
Connection, versatility are stronger.
In addition, due to eNodeB Id parameters and eNodeB IP parameters, there are one-to-one relationship, above-mentioned extraction steps
In rapid, extraction eNodeB Id parameters could alternatively be extraction eNodeB IP parameters, and in judgment step, it can be determined that it is corresponding
ENodeB IP parameters, Cell Id parameters and C-RNTI parameters it is whether identical.
The present invention can reach following technique effect：1st, it does not need to additionally monitor S1-MME interface, only need to monitor Uu connects
Mouth and X2 interface；2nd, no matter Uu interfaces are using soft acquisition mode or hard acquisition mode, it can realize that flow is associated with；
3rd, treatment effeciency and performance are improved.
Certainly, the present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, ripe
It knows those skilled in the art and makes various corresponding changes and deformation, but these corresponding changes and change in accordance with the present invention
Shape should all belong to the protection domain of appended claims of the invention.
Claims (2)
1. the correlating method of X2 interface switching flow and Uu interface signaling process inside a kind of LTE system, which is characterized in that described
Correlating method includes the step of being associated the signaling process of source Uu interface signaling process and X2 interface and by target side
The step of signaling process of Uu interface signaling process and X2 interface is associated；
Wherein, the step of signaling process of source Uu interface signaling process and X2 interface being associated includes：
The extracting parameter from source Uu interface signaling messages：Cell Identity parameters, C-RNTI parameters；
The extracting parameter from the Handover Request message of X2 interface：Source Cell Identity parameters, source C-RNTI
Parameter；
The Cell Identity parameters and C-RNTI parameters that will be extracted from source Uu interface signaling messages, respectively with being connect from X2
Source Cell Identity parameters, the source C-RNTI parameters extracted in the Handover Request message of mouth are compared,
If relevant parameter is identical, the signaling process of source Uu interface signaling process and X2 interface is associated；
Wherein, the step of signaling process of target side Uu interface signaling process and X2 interface being associated includes：
The extracting parameter from target side Uu interface signaling messages：Cell Identity parameters, C-RNTI parameters；
The extracting parameter from the Handover Request message of X2 interface：Target side Cell Identity parameters, and from X2AP
Target side C-RNTI parameters are extracted in the Handover Request Acknowledge message of agreement；
The parameter that will be extracted from target side Uu interfaces：Cell Identity parameters, C-RNTI parameters, respectively with being carried from X2 interface
Target side Cell Identity parameters, the target side C-RNTI parameters taken is compared, if relevant parameter is identical, by target
The signaling process of side Uu interface signaling process and X2 interface is associated；
The Cell Identity parameters are 28 bit, wherein high 20bit is eNodeB Id parameters, low 8bit is Cell Id
The step of parameter, the extraction Cell Identity parameters is specially the step of extraction eNodeB Id parameters and Cell Id parameters
Suddenly, described the step of being compared to corresponding Cell Identity parameters be specially to corresponding eNodeB Id parameters and
The step of Cell Id parameters are compared.
2. the correlating method of X2 interface switching flow and Uu interface signaling process inside LTE system according to claim 1,
It is characterized in that, the step of extraction eNodeB Id parameters, could alternatively be the step of extraction eNodeB IP parameters, to phase
The step of eNodeB Id parameters answered are compared could alternatively be the step of being compared to corresponding eNodeB IP parameters.
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| CN104768193A (en) * | 2015-04-15 | 2015-07-08 | 深圳市博瑞得科技有限公司 | Method and system for associating signaling messages in LTE network switching process |
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| CN103237301A (en) * | 2013-04-19 | 2013-08-07 | 大唐移动通信设备有限公司 | Signaling relevance method and device |
| CN104768193A (en) * | 2015-04-15 | 2015-07-08 | 深圳市博瑞得科技有限公司 | Method and system for associating signaling messages in LTE network switching process |
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