CN104811978B - The method of IMSI and IMEI matching errors in a kind of quick detection LTE signalings - Google Patents
The method of IMSI and IMEI matching errors in a kind of quick detection LTE signalings Download PDFInfo
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Abstract
The invention discloses the method for IMSI in a kind of quick detection LTE signalings and IMEI matching errors, including：The signaling data of LTE core network is acquired and parsed；The signaling data of every business record of acquisition is decoded as XDR signaling datas and analyzed respectively, extraction obtains IMSI information, IMEI information and User Agent fields；Terminal type wherein included is obtained after data cleansing and critical field extraction parsing are carried out to the User Agent fields that extraction obtains；The terminal type obtained and IMSI information will be extracted and IMEI information is associated after recording and obtains associated record information；Associated record information with default TAC indexes end message storehouse is matched, judges whether the correspondence of the IMSI information and IMEI information of XDR records is correct.The present invention can in time, be quickly detected from the matching error of IMSI and IMEI, reduce the error of monitoring signaling process, accuracy rate is high, can be widely applied in monitoring signaling field.
Description
Technical field
The present invention relates to monitoring signaling fields, are matched more particularly to IMSI in a kind of quick detection LTE signalings with IMEI
The method of mistake.
Background technology
For the ease of following description, following name is provided first and is explained：
LTE：Long Term Evolution, Long Term Evolution；
IMSI：International Mobile Subscriber Identification Number, the world is mobile to be used
Family identification code；
IMEI：International Mobile Equipment Identity, mobile device international identity code；
MSISDN：Mobile Subscriber International ISDN/PSTN number, in public telephone network
In exchange network numbering plan, the number of mobile subscriber can be uniquely identified；
TD_LTE：The Long Term Evolution of Time Division Long Term Evolution, TDD versions, also referred to as
Time division duplex；
FDD_LTE：The Long Term Evolution of frequency dividing pattern；
XDR：XDR signaling datas be need to parse original signaling data according to application layer, handle, associate after extract
The call detail record and affairs gone out records in detail；
TAC：Tracking area code of cell servedby neighbor Enb, Tracking Area Code.
With a large amount of commercializations of the TD_LTE and FDD_LTE technologies in China, telecom operators establish huge with TD_
LTE technologies are the mobile communications network preferably supported, and wherein core network part carries main communication signaling information connection
Transmit work.At present, major carrier all establishes the monitoring signaling point of each interface based on LTE network core net of oneself
Analyse platform.In 2G the and 3G epoch, monitoring signaling platform focuses mainly on network side index of correlation and the monitoring of quality is carried with improvement
It rises, is mainly used to complete the presentation of related KPI, KQI index based on each rank network element of network side by monitoring signaling platform.
And be continuously increased with the explosive growth data service of mobile Internet, what 4G LTE epoch operators focused more on it is
User class and the other index of terminating stage, therefore the monitoring signaling platform based on LTE network is just needed user class information and terminal
The information of rank is done as signaling resolution and the emphasis of analysis.
At present, only one or two of field of user and end message can be distinguished in the LTE core network signaling of telecom operators
For：IMSI and IMEI.Monitoring signaling platform software obtains IMSI to IMEI information and by user information and related ticket and skill
The method that art index is associated is：Analytical analysis is carried out by the signaling collected in each interface of LTE signalings, is then extracted
The subscriber identity information in XDR records after the signaling decoding of each interface simultaneously carries out real time correlation to it, so as to will be same
The XDR that a user corresponds to distinct interface is associated.And in order to solve the problems, such as to lack relation information in some interface messages,
Association backfill technology is introduced, according to multiplex roles XDR association results, the field lacked in the original XDR of each interface is backfilled, has generated
Whole each interface XDR.It is mainly User Identity information to need the information backfilled, including at least IMSI, IMEI and MSISDN.
But the associated method of above-mentioned carry out subscriber identity information is primarily present two problems：First, in not all message
IMSI information and IMEI information will be reported；Even in the message for the 2nd, carrying IMSI and IMEI information, terminal device
IMEI information is by the certain time cycle nor the IMEI information of the real-time report of the currently used terminal of the user
Realization is offered in caching and equipment, so necessarily results in problems with：It is longer when the time cycle that IMEI is reported, and at this
When mobile phone terminal used by a user changes in a time cycle, just it is present with the IMSI information recorded in network and IMEI
Information correspondence mistake happens, and all can so as to cause the index of correlation and application calculated based on this correspondence
Generation mistake.
Because accessing the starting stage of LTE wireless networks in mobile phone user, the skill of Attach network attachments can occur for user
Art flow.IMSI the and IMEI information of user can be reported to LTE network side apparatus in related signaling.LTE network side is set
It is standby the IMSI and IMEI information of user to be cached in the form of parameter, and network side equipment is directed to this caching number
According to update cycle set cycle regular hour, it is therefore an objective to reduce the operation burden of user UE and network side equipment.
However, there is a large amount of user groups for having and custom being used as described below in the user group of operator：User is one
One SIM card is inserted into certain mobile phone terminal using after a period of time by it even in shorter time, and the SIM card is changed to
It is used in another mobile phone terminal.So as to come into force as the IMSI in LTE network with international mobile equipment identity number caching mechanism, and set
Acquiescence caching duration it is long when, the correspondence of the IMSI cached in network and IMEI are may result in, with being used in reality
The correspondence of family real IMSI and IMEI has deviation.That is, it can cause in the signaling data that LTE core network gathers
International mobile equipment identity number be all wrong.It, can adjoint network requirement use after the clock cycle of network-caching expires although this mistake
Family reports relevant information and is corrected again, but the mistake within the caching cycle always will be unable to retrieve.
And at present in the monitoring signaling platform of the LTE network of operator, unique mark for user equipment terminal and
The identification of terminal models all uniquely depends on international mobile equipment identity number.Therefore, if being by the international mobile equipment identity number collected in network signal
Mistake, the terminal mark mistake of user in monitoring signaling platform and the terminal type identification mistake of user are may result in, from
And cause the index based on terminal dimension statistics, all gone out based on terminal type identification, the software function module based on terminal coupling
Existing serious error detects the matching error of IMSI and IMEI, it will bring huge monitoring error, it is also possible to make not in time
Into important error.
The content of the invention
In order to solve the technical issues of above-mentioned, the object of the present invention is to provide IMSI in a kind of quick detection LTE signalings with
The method of IMEI matching errors.
The technical solution adopted by the present invention to solve the technical problems is：
The method of IMSI and IMEI matching errors in a kind of quick detection LTE signalings, including：
S1, the signaling data of LTE core network is acquired and parsed；
S2, the signaling data of every business record of acquisition is decoded as XDR signaling datas and analyzed respectively,
And then IMSI information, IMEI information and the User-Agent fields for obtaining and being carried in XDR signaling datas are extracted, and to acquisition
IMSI information carries out stored record with IMEI information and associates backfill；
S3, obtained wherein after data cleansing and critical field extraction parsing are carried out to the User-Agent fields that extraction obtains
Comprising terminal type；
S4, the terminal type that will extract acquisition and IMSI information and IMEI information obtain associated record after being associated record
Information；
S5, associated record information with default TAC indexes end message storehouse is matched, and then judges that the XDR is recorded
IMSI information and IMEI information correspondence it is whether correct.
Further, the step S1 is specially：
Control plane and user plane signaling data to primary interface in LTE core network are acquired, the primary interface bag
It includes with lower interface：S1-MME, S1-U, S11, S10 and S6a.
Further, the step S2 is specially：
The original signaling data of every business record of acquisition is decoded as XDR signaling datas and divided respectively
Analysis, and then screening and filtering is carried out to the XDR signaling datas of decoded control plane, extraction obtains to be carried in the XDR signaling datas
IMSI information and IMEI information, and the IMSI information of acquisition is carried out stored record and associated to backfill with IMEI information；
The HTTP fields in the XDR signaling datas for obtaining user plane are extracted simultaneously, and are obtained after being parsed to HTTP fields
Obtain User-Agent fields.
Further, the IMSI information of described pair of acquisition carries out the step of stored record is with backfill is associated with IMEI information,
Specially：
After IMSI information and IMEI information progress stored record to acquisition backfill is associated with corresponding XDR.
Further, the step S3 is specially：
To extraction obtain User-Agent fields in do not include end message data or form confusion field into
Row cleaning, and then carry out critical field extraction, obtain data relevant with end message in User-Agent fields and solved
Corresponding terminal type is obtained after analysis.
Further, the step S5 is specially：
Associated record information with default TAC indexes end message storehouse is matched, obtains TAC index end messages storehouse
In the information record consistent with the terminal type of associated record information, and then judge the first eight of the IMEI information of associated record information
Whether position is consistent with the TAC numbers of the information record, if so, judging pair of the IMSI information and IMEI information of XDR records
Should be related to it is correct, conversely, judging that the correspondence of the IMSI information and IMEI information of XDR records is wrong.
Further, it is further comprising the steps of before the step S1：
S0, default TAC indexes end message storehouse is established.
The beneficial effects of the invention are as follows：IMSI and IMEI matching errors in a kind of quick detection LTE signalings of the present invention
Method, including：S1, the signaling data of LTE core network is acquired and parsed；S2, respectively to every business record of acquisition
Signaling data be decoded as XDR signaling datas and analyzed, and then extract and obtain the IMSI that carries in XDR signaling datas
Information, IMEI information and User-Agent fields, and IMSI information to acquisition and IMEI information carry out stored record and association
Backfill；S3, wherein wrapped after data cleansing and critical field extraction parsing are carried out to the User-Agent fields that extraction obtains
The terminal type contained；S4, the terminal type that will extract acquisition and IMSI information and IMEI information are closed after being associated record
Connection record information；S5, associated record information with default TAC indexes end message storehouse is matched, and then judges that the XDR remembers
Whether the IMSI information of record and the correspondence of IMEI information are correct.The present invention can in time, be quickly detected from IMSI with
The matching error of IMEI, reduces the error of monitoring signaling process, and accuracy rate is high.
Description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is IMSI and the flow chart of the method for IMEI matching errors in a kind of quick detection LTE signalings of the invention；
Fig. 2 is the flow chart handled in specific embodiments of the present invention control plane signaling data；
Fig. 3 is to carry out the signal of signaling data acquisition to the primary interface of LTE core network in specific embodiments of the present invention
Figure.
Specific embodiment
With reference to Fig. 1, the present invention provides the method for IMSI in a kind of quick detection LTE signalings and IMEI matching errors, bags
It includes：
S1, the signaling data of LTE core network is acquired and parsed；
S2, the signaling data of every business record of acquisition is decoded as XDR signaling datas and analyzed respectively,
And then IMSI information, IMEI information and the User-Agent fields for obtaining and being carried in XDR signaling datas are extracted, and to acquisition
IMSI information carries out stored record with IMEI information and associates backfill；
S3, obtained wherein after data cleansing and critical field extraction parsing are carried out to the User-Agent fields that extraction obtains
Comprising terminal type；
S4, the terminal type that will extract acquisition and IMSI information and IMEI information obtain associated record after being associated record
Information；
S5, associated record information with default TAC indexes end message storehouse is matched, and then judges that the XDR is recorded
IMSI information and IMEI information correspondence it is whether correct.
Preferred embodiment is further used as, the step S1 is specially：
Control plane and user plane signaling data to primary interface in LTE core network are acquired, the primary interface bag
It includes with lower interface：S1-MME, S1-U, S11, S10 and S6a.
Control plane mentioned herein and user plane are two concepts artificially defined in communication protocol, and user plane transmission is
User data, that is, real business tine；What control plane transmitted is the Signalling exchange in order to carry user data and carry out,
Mainly carry some important signaling messages；The signaling data of control plane refers to the message content of signaling.
Preferred embodiment is further used as, the step S2 is specially：
The original signaling data of every business record of acquisition is decoded as XDR signaling datas and divided respectively
Analysis, and then screening and filtering is carried out to the XDR signaling datas of decoded control plane, extraction obtains to be carried in the XDR signaling datas
IMSI information and IMEI information, and the IMSI information of acquisition is carried out stored record and associated to backfill with IMEI information；
The HTTP fields in the XDR signaling datas for obtaining user plane are extracted simultaneously, and are obtained after being parsed to HTTP fields
Obtain User-Agent fields.
Be further used as preferred embodiment, the IMSI information and IMEI information of described pair of acquisition carry out stored record and
The step of association backfill, it is specially：
After IMSI information and IMEI information progress stored record to acquisition backfill is associated with corresponding XDR.
Preferred embodiment is further used as, the step S3 is specially：
To extraction obtain User-Agent fields in do not include end message data or form confusion field into
Row cleaning, and then carry out critical field extraction, obtain data relevant with end message in User-Agent fields and solved
Corresponding terminal type is obtained after analysis.
Preferred embodiment is further used as, the step S5 is specially：
Associated record information with default TAC indexes end message storehouse is matched, obtains TAC index end messages storehouse
In the information record consistent with the terminal type of associated record information, and then judge the first eight of the IMEI information of associated record information
Whether position is consistent with the TAC numbers of the information record, if so, judging pair of the IMSI information and IMEI information of XDR records
Should be related to it is correct, conversely, judging that the correspondence of the IMSI information and IMEI information of XDR records is wrong.
It is further used as preferred embodiment, it is further comprising the steps of before the step S1：
S0, default TAC indexes end message storehouse is established.
With reference to a specific embodiment, the invention will be further described：
With reference to Fig. 1, the method for IMSI and IMEI matching errors in a kind of quick detection LTE signalings, including：
S0, default TAC indexes end message storehouse is established；This step is to establish believable TAC indexes end message storehouse,
The mode of foundation can be by buying the existing TAC indexes end message storehouse in market or voluntarily compiling.
S1, the signaling data of LTE core network is acquired and parsed, be specially：
The control plane and user plane signaling data of primary interface in LTE core network are carried out by being divided the means gathered firmly
Acquisition, the primary interface are included with lower interface：S1-MME, S1-U, S11, S10 and S6a.The schematic diagram of each interface such as Fig. 3 institutes
Show, the identification extraction of the IMSI number international mobile equipment identity number in the signaling data to the control plane of LTE core network is related to due to this method, with
And analysis is extracted to User-Agent fields after the interception of HTTP operation flows relevant field in the signaling data of user plane,
So it must is fulfilled for data above acquisition requirement.
S2, the signaling data of every business record of acquisition is decoded as XDR signaling datas and analyzed respectively,
And then IMSI information, IMEI information and the User-Agent fields for obtaining and being carried in XDR signaling datas are extracted, and to acquisition
IMSI information carries out stored record with IMEI information and associates backfill；With reference to shown in Fig. 2, this step is specially：
The original signaling data of every business record of acquisition is decoded as XDR signaling datas and divided respectively
Analysis, and then screening and filtering is carried out to the XDR signaling datas of decoded control plane, extraction obtains to be carried in the XDR signaling datas
IMSI information and IMEI information, and the IMSI information of acquisition is carried out stored record and associated to backfill with IMEI information；
The HTTP fields in the XDR signaling datas for obtaining user plane are extracted simultaneously, and are obtained after being parsed to HTTP fields
Obtain User-Agent fields.
S3, obtained wherein after data cleansing and critical field extraction parsing are carried out to the User-Agent fields that extraction obtains
Comprising terminal type；Specially：
To extraction obtain User-Agent fields in do not include end message data or form confusion field into
Row cleaning, and then carry out critical field extraction, obtain data relevant with end message in User-Agent fields and solved
Corresponding terminal type is obtained after analysis.
Specific example is as follows：
（1）To not including the related data of end message such as in User-Agent fields：Micro- poly- 1.9.6, microblogging
4.6.0, Netease's cloud music 1.8.1, everyday extremely run 1.0.14, rich man 2.0.46 etc. is cleaned everyday；
（2）Although to containing part terminal type field in User-Agent fields, still form is chaotic, is unfavorable for journey
The field that sequence automatically extracts is cleaned；
（3）The mode screened by big data or combine manual identified identifies ratio data highest part, obtains
Comprising end message relevant field in User-Agent fields, and it is to obtain the regular record type of form, and then parses and obtain
Obtain corresponding terminal type.
Such as Weibo/4.6.0 (iPhone; iOS 8.0;Scale/2.00), it is microblogging business, this can be extracted
User terminal is the operating system of iOS 8.0, and it is iPhone 6 that parsing, which obtains terminal type,.
UCWEB/2.0 (Linux; U; Adr 2.3.4; zh-CN;GT-S5830 it is) Sina's UC business, can identifies
Go out the user's terminal for GT-S5830, it is Samsung GT-S5830 that parsing, which obtains terminal type,；
It is the embodiment of some User-Agent fields below：
Mozilla/5.0 (iPhone; CPU iPhone OS 7_0_4 like Mac OS X; zh-CN) U；
Mozilla/5.0 (iPhone; CPU iPhone OS 6_1_4 like Mac OS X; zh-CN) U；
Mozilla/5.0 (iPhone; CPU iPhone OS 5_1_1 like Mac OS X; zh-CN) U；
Dalvik/1.6.0 (Linux; U; Android 4.4.4; M353 Build/KTU84P)；
Dalvik/1.6.0 (Linux; U; Android 4.4.4; LANMI-W1120 Build/JDQ39) ；
Dalvik/1.6.0 (Linux; U; Android 4.4.3; HTC One 801e Build/KTU84L；
Using this step, it can parse and obtain the corresponding terminal type of above several User-Agent fields.
S4, the terminal type that will extract acquisition and IMSI information and IMEI information obtain associated record after being associated record
Information；Here associated record information is IMSI information, IMEI information and refers to the related information between terminal type, also includes step
Related information in rapid S2 with corresponding XDR.
S5, associated record information with default TAC indexes end message storehouse is matched, and then judges that the XDR is recorded
IMSI information and IMEI information correspondence it is whether correct, be specially：
Associated record information with default TAC indexes end message storehouse is matched, obtains TAC index end messages storehouse
In the information record consistent with the terminal type of associated record information, and then judge the first eight of the IMEI information of associated record information
Whether position is consistent with the TAC numbers of the information record, if so, judging pair of the IMSI information and IMEI information of XDR records
Should be related to it is correct, conversely, judging that the correspondence of the IMSI information and IMEI information of XDR records is wrong, to this
XDR records stamp insincere label, and expression should be updated the IMEI information of the record.During implementation, it can set up credible
Position is indicated, when the correspondence of matching judgment IMSI information and IMEI information is correct, then the credible mark position is designated as credible,
Otherwise to be insincere, thus can be first to credible mark during the use of the IMSI and IMEI of signaling platform system progress user
Position is read out, and is just sampled when credible mark position is credible, ensures the user's IMEI terminal devices gathered in related signaling
Number is all correct.
Here associated record information is carried out matched principle with default TAC indexes end message storehouse is：When user is whole
When end is consistent with the terminal type in TAC index end messages storehouse, the first eight bits of the IMEI information of user should be with TAC index terminals
TAC numbers in information bank are consistent, if there is inconsistent situation, then it represents that the user's IMSI information recorded in the core net
Correspondence with IMEI information is wrong, should be corrected.
The above are implementing to be illustrated to the preferable of the present invention, but the invention is not limited to the implementation
Example, those skilled in the art can also make a variety of equivalent variations on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent modifications or replacement are all contained in the application claim limited range.
Claims (7)
- A kind of 1. method of IMSI and IMEI matching errors in quick detection LTE signalings, which is characterized in that including：S1, the signaling data of LTE core network is acquired and parsed；S2, the signaling data of every business record of acquisition is decoded respectively as XDR signaling datas and the letters of the XDR to obtaining Data is made to be analyzed, and then extract IMSI information, IMEI information and the User-Agent words for obtaining and being carried in XDR signaling datas Section, and stored record is carried out with IMEI information to the IMSI information of acquisition and associates backfill；S3, wherein included after data cleansing and critical field extraction parsing are carried out to the User-Agent fields that extraction obtains Terminal type；S4, the terminal type that will extract acquisition and IMSI information and IMEI information obtain associated record letter after being associated record Breath；S5, associated record information with default TAC indexes end message storehouse is matched, and then judges XDR records Whether the correspondence of IMSI information and IMEI information is correct.
- 2. the method for IMSI and IMEI matching errors, feature in a kind of quick detection LTE signalings according to claim 1 It is, the step S1 is specially：Control plane and user plane signaling data to primary interface in LTE core network are acquired, the primary interface include with Lower interface：S1-MME, S1-U, S11, S10 and S6a.
- 3. the method for IMSI and IMEI matching errors, feature in a kind of quick detection LTE signalings according to claim 2 It is, the step S2 is specially：The original signaling data of every business record of acquisition is decoded respectively as XDR signaling datas and the XDR to obtaining Signaling data is analyzed, and then carries out screening and filtering to the XDR signaling datas of decoded control plane, and extraction obtains the XDR The IMSI information and IMEI information carried in signaling data, and IMSI information to acquisition and IMEI information carry out stored record and Association backfill；The HTTP fields in the XDR signaling datas for obtaining user plane are extracted simultaneously, and are obtained after being parsed to HTTP fields User-Agent fields.
- 4. the method for IMSI and IMEI matching errors, feature in a kind of quick detection LTE signalings according to claim 3 It is, the IMSI information of described pair of acquisition carries out the step of stored record is with backfill is associated with IMEI information, is specially：After IMSI information and IMEI information progress stored record to acquisition backfill is associated with corresponding XDR.
- 5. the method for IMSI and IMEI matching errors, feature in a kind of quick detection LTE signalings according to claim 1 It is, the step S3 is specially：The field of the data or form confusion that do not include end message in the User-Agent fields obtained to extraction carries out clear It washes, and then carries out critical field extraction, after obtaining data relevant with end message in User-Agent fields and being parsed Obtain corresponding terminal type.
- 6. the method for IMSI and IMEI matching errors, feature in a kind of quick detection LTE signalings according to claim 1 It is, the step S5 is specially：Associated record information is matched with default TAC indexes end message storehouse, obtain in TAC index end messages storehouses and The consistent information record of the terminal type of associated record information, and then judge that the first eight bits of the IMEI information of associated record information are It is no consistent with the TAC numbers of the information record, it is closed if so, judging that the IMSI information of XDR records is corresponding with IMEI information System is correct, conversely, judging that the correspondence of the IMSI information and IMEI information of XDR records is wrong.
- 7. the method for IMSI and IMEI matching errors, feature in a kind of quick detection LTE signalings according to claim 1 It is, it is further comprising the steps of before the step S1：S0, default TAC indexes end message storehouse is established.
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| CN105246099A (en) * | 2015-10-27 | 2016-01-13 | 合肥浩瀚深度信息技术有限公司 | Association method of S1-MME (Mobility Management Entity) interface and S11 interface signaling procedure under LTE (Long Term Evolution) system interior non-switching scene |
| CN107040908B (en) * | 2016-02-03 | 2019-09-17 | 上海大唐移动通信设备有限公司 | A kind of method and device for realizing synthesis signaling XDR |
| CN107360589B (en) * | 2016-05-10 | 2020-04-14 | 中国移动通信有限公司研究院 | Data cleaning method and data cleaning device for mobile communication network |
| CN106572495B (en) * | 2016-09-29 | 2019-12-10 | 普天信息工程设计服务有限公司 | Network quality monitoring method and coverage evaluation method based on signaling and MR data |
| CN108235268B (en) * | 2016-12-21 | 2020-08-04 | 中国移动通信集团河南有限公司 | Method and device for acquiring use times of IMEI (international mobile equipment identity) of call terminal |
| CN106911517B (en) * | 2017-03-22 | 2020-06-26 | 杭州东方通信软件技术有限公司 | Method and system for positioning end-to-end problem of mobile internet |
| CN109948006B (en) * | 2017-11-28 | 2021-07-27 | 中国电信股份有限公司 | Method and device for backfilling code number and computer readable storage medium |
| CN109088949B (en) * | 2018-10-22 | 2021-05-25 | 中国联合网络通信集团有限公司 | Matching method of Internet of things services and MME |
| CN111371628B (en) * | 2020-03-24 | 2021-09-03 | 江苏省通信服务有限公司 | User plane and control plane information correlation method in LTE network |
| CN113542203B (en) * | 2020-04-21 | 2022-06-28 | 中国移动通信集团贵州有限公司 | Video service DPI identification method and server |
| CN114071450B (en) * | 2020-08-05 | 2023-07-21 | 中国移动通信集团重庆有限公司 | Recognition method and device for card changing behavior of machine changing |
| CN113038523B (en) * | 2021-05-07 | 2022-11-01 | 中国联合网络通信集团有限公司 | Terminal identification method and device |
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| US9042864B2 (en) * | 2011-12-19 | 2015-05-26 | International Business Machines Corporation | Appliance in a mobile data network that spans multiple enclosures |
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| CN103648125A (en) * | 2013-12-25 | 2014-03-19 | 北京炎强通信技术有限公司 | Method for monitoring long term evolution (LTE) network voice services |
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