CN102404779B - A kind of method for early warning of communication quality change and system - Google Patents
A kind of method for early warning of communication quality change and system Download PDFInfo
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- CN102404779B CN102404779B CN201010275763.9A CN201010275763A CN102404779B CN 102404779 B CN102404779 B CN 102404779B CN 201010275763 A CN201010275763 A CN 201010275763A CN 102404779 B CN102404779 B CN 102404779B
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Abstract
The invention discloses method for early warning and the system of the change of a kind of communication quality, the method comprises radio network controller (RNC) and detects communication quality when wireless telecommunications system carries out communication traffic, and according to testing result, early warning event message is sent through core net CN to wireless telecommunications system when communication quality becomes bad, by technical scheme provided by the invention, can before the communication quality of wireless telecommunications system change, the user in advance to this wireless telecommunications system sends early warning event message.
Description
Technical field
The present invention relates to field of wireless communication, particularly relate to method for early warning and the system of the change of a kind of communication quality.
Background technology
There is region that some wireless network signals cannot cover or the more weak region of wireless signal in radio signal propagation, enter these regions to make user can also to keep in communication mass conservation, someone proposes the method extending mobile service coverage distance at present, namely in the increase repeater, edge of these differences, or between base station and the travelling carriage in these regions, increase a wireless fixing assess station, these equipment are just equivalent to the repeater of a wireless signal, play the method extending the mobile service area of coverage.But these equipment only can reduce the scope in region that signal cannot cover or the more weak region of signal, can not eliminate these regions completely.Somebody proposes another method, to the wireless telecommunications system of call be kept to be switched to 2G network or other network systems from 3G network exactly, switch before conversation loss, the defect of the method is exactly that signal blind zone must have other Radio Network Systems to cover, other Radio Network Systems also must support this switching, namely allow to realize from 3G systematic evaluation to 2G system, but for user provides class of business to enrich, as visual telephone and all kinds of high-speed data services etc. in 3G network.UE (wireless telecommunications system) is switched to 2G network from 3G, and UE initiates video calling and just becomes voice call in 3G network, and the business that just there occurs suddenly in unwitting situation changes, and deviates from user's expection.
Summary of the invention
The invention provides method for early warning and the system of the change of a kind of communication quality, can before the communication quality of wireless telecommunications system change, the user in advance to this wireless telecommunications system sends early warning event message.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A method for early warning for communication quality change, comprising:
Radio network controller (RNC) detection wireless telecommunications system carries out communication quality during communication traffic, and according to testing result, sends early warning event message when communication quality becomes bad through core net CN to described wireless telecommunications system.
RANAP (the RadioAccessNetworkApplicationPart of described RNC by exchanging up-link information, chain of command agreement between RNC and CN) signaling carries out expansion to encapsulate described early warning event message, then the RANAP signaling that the up-link information being packaged with described early warning event message exchanges is sent to described CN.
The information exchange ID and the CN territory that also comprise the response message of the described early warning event message that more described early warning event message is fed back to RNC by the response signaling that described up-link information exchanges with CN indicate whether consistent, if consistent, then represent that described early warning event message sends successfully, if inconsistent, represent that described early warning event message sends unsuccessfully.
Described early warning event message is packaged into newly-increased RANAP signaling and sends to CN by RNC.
Also comprise and judge whether wireless telecommunications system opens warning function, and open the prerequisite of warning function at wireless telecommunications system under, provide early warning event message to it.
If the communication traffic of wireless telecommunications system is speech communication, the step detecting communication quality when wireless telecommunications system carries out communication traffic comprises:
Compare the block error rate BLER current measurement value of upstream data and the BLER threshold value preset;
If described BLER current measurement value is greater than described BLER threshold value, then compare the received signal code power RSCP current measurement value of wireless telecommunications system place common signal channel and the RSCP threshold value preset;
If RSCP current measurement value is less than described RSCP threshold value, then send early warning event message to wireless telecommunications system.
If the communication traffic of wireless telecommunications system is video communication, the step detecting communication quality when wireless telecommunications system carries out communication traffic comprises:
Radio network controller (RNC) issues the Survey control message of communication quality measurement event between open system to wireless telecommunications system;
When network signal quality is deteriorated, wireless telecommunications system is to RNC reporting measurement reports;
RNC receives described measurement report, sends early warning event message to wireless telecommunications system.
Described early warning event message comprises AT event message.
The data content of described AT event generates in self-defined signal language server CATServer.
A kind of early warning system of communication quality change, comprise radio network controller (RNC), described RNC comprises warning function module, described warning function module is for detecting communication quality when wireless telecommunications system carries out communication traffic, and according to testing result, send early warning event message through core net CN to described wireless telecommunications system when communication quality becomes bad.
The present invention adopts above technical scheme, when wireless telecommunications system communication quality will change, network side sends early warning event message to wireless telecommunications system in advance, may stop after wireless telecommunications system receives early warning continuing to move, the communication quality that efficiently avoid wireless telecommunications system changes, even if communication quality changes, be also when user predicts, thus enhance user experience.
The present invention can reduce the Experience Degree that probability that communication quality changes can strengthen again user, and relative to other method in prior art, effectively can reduce technical costs.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention network element structural representation;
Fig. 2 is the frame diagram that the embodiment of the present invention realizes early warning;
Fig. 3 is the flow chart that the embodiment of the present invention realizes early warning;
Fig. 4 is the quality testing flow chart of embodiment of the present invention speech communication;
Fig. 5 is the quality testing flow chart of embodiment of the present invention video communication;
Fig. 6 is the flow chart that another embodiment of the present invention realizes early warning.
Embodiment
By reference to the accompanying drawings the present invention is described in further detail below by embodiment.
The method for early warning of communication quality change mainly comprises: detection wireless telecommunications system carries out communication quality during communication traffic; According to testing result, send early warning event message when communication quality becomes bad to wireless telecommunications system.
Please refer to Fig. 1, this figure is embodiment of the present invention network element structural representation, UE (wireless telecommunications system), RNC, CN, wherein CN comprises MSC (MobileSwitchingCenter, mobile switching centre), MGW (MediaGateWay, media gateway), HLR (HomeLocationRegister, attaching position register), CATServer (CustomizedAlertingToneServer, self-defined signal language server), CATServer is that the core of the signal language of CN circuit domain is set up, for storing CAT service logic and play multimedia resource, as storaged voice, record language, video, picture, the contents such as word, MSC completes Call-Control1 and mobile control forms, and is responsible for the functions such as the call treatment of CS, MGW major function is to provide Bearer Control and transfer resource, and carrying and media processing, also have medium processing device (as code pattern converter, rise arrester, meeting bridge etc.), performs media conversion and Frame Protocol conversion, HLR is the public establishment in CS territory and packet switching (PS, PacketSwitch) territory, is in charge of the database of user, store administer the subscription data of user and the positional information of mobile subscriber, can routing iinformation be provided, RNC is the control appliance of the Access Network of 3G network, is responsible for the function such as control of the process of Access Network signaling, transmission bearer and Radio Resource.
Please refer to Fig. 2, the embodiment of the present invention realizes the frame diagram of early warning: the present invention can be different according to the communication traffic type of wireless telecommunications system, adopt different communication quality detection methods.As communication type be speech communication time, carry out speech communication quality testing, according to testing result, judge whether to produce and send early warning event message to wireless telecommunications system; If when communication type is video communication, carry out video communication quality testing, according to testing result, judge whether to produce and send early warning event message to wireless telecommunications system.Early warning event comprises various ways, such as AT (AlertingTone, signal language), note, multimedia message or other can play the form of early warning effect.
Embodiment one:
Please refer to Fig. 3, for the embodiment of the present invention realizes the flow chart of early warning, the embodiment of the present invention be described in further detail:
S110, to set up when the CS business of UE, namely after called UE off-hook, RNC starts warning function module, different according to communication traffic, produce AT event message, as, when communication type is speech communication, warning function module carries out speech communication quality testing, and according to testing result, judges whether to produce AT event message; When communication type is video communication, warning function module carries out video communication quality testing, and according to testing result, judges whether to produce AT event message, finally by warning function module, AT event message is passed to the RANAP module of RNC.
The RANAP module of S120, RNC receives AT event message, is packaged into RANAP message, by Iu interface RANAP transmission of messages to MSC.This RANAP message is that up-link information exchanges (UplinkInformationExchange), be suitable for the transmission of AT event message, do not need to newly increase RANAP message, only need to carry out expansion in up-link information exchanges and can transmit AT event message.The cell that up-link information exchanges comprises the RNCID (GlobalRNC-ID) of information exchange ID (InformationExchangeID), information exchange type (InformationExchangeType), information transmission type (InformationTransferType), Information Request type (InformationRequestType), CN territory instruction (CNDomainIndicator), the overall situation.Information exchange type field extension is gone out an information AT type, Information Request type represents AT event type, AT event message is encapsulated in the RANAP signaling of up-link information exchange, this signaling is sent to MSC by Iu interface, buffer memory up-link information exchange message, starts the transmission timer Timer1 of AT event message simultaneously.
The RANAP module of S130, MSC receives the signaling of up-link information exchange, is parsed by AT event message according to the method for the encapsulation AT event message in step S120 from up-link information exchange of signaling.MSC sends AT instruction message to CATServer, and this AT instruction message defines in the standard interface function of MSC and CAT server.
After S140, CATServer receive AT instruction message, the AT data of specified type are passed to UE to MGW, AT data by MGW.
S150, MSC reply the response of AT event message to RNC, and such RNC just can know whether CN supports AT Event Function.MSC is just encapsulated in the response message of up-link information exchange to the response AT event message of RNC.Response message comprises successful response message and failed response message.
The success response of the AT event message that S151, MSC reply to RNC, RNC receives up-link information and exchanges response (UplinkInformationExchangeResponse) signaling, represent that MSC sends the success of AT event message, terminate the transmission timer Timer1 of the AT event message in S120 step.The up-link information of MSC encapsulation exchanges in the cell of response and comprises information exchange ID and CN territory indicates, and information exchange ID and the value that CN territory indicates are all identical with receiving the value that up-link information exchanges, and the success response receiving correct AT event message is described.
S152, MSC reply the failure response of AT event message to RNC, RNC receives up-link information swap fault (UplinkInformationExchangeFailure) signaling, represent that MSC sends the failure of AT event message, terminate the transmission response timer Timer1 of AT event message.MSC is by the failure response message encapsulation of AT event message in up-link information swap fault, and the cell of up-link information swap fault comprises the instruction of information exchange ID, CN territory, failure cause.
Above-mentioned S151 and S152 can be further, after RNC receives up-link information exchange response, no matter be that up-link information exchanges response or up-link information swap fault, RNC first will indicate in resolving information exchange id and CN territory from the response received, whether these two cells of comparison send up-link information with buffer memory and exchange consistent, the consistent transmission timer Timer1 just terminating AT event message, removes buffer memory.For failed AT instruction response, different according to failure cause, timing can also retransmit AT instruction to MSC, repeat step S120-S150.
Adopt present embodiment, warning function is opened to all users, Iu interface need not increase new RANAP message, the AT event of the message encapsulation utilizing up-link information to exchange from RNC to MSC, utilizes up-link information to exchange the response message of response message as the AT event message from MSC to RNC of response and up-link information swap fault.AT event message is a kind of affirmation mode message, and improve the transmission reliability of AT event, RNC can to the further Subdividing Processing of response results.
When communication type is speech communication, the implementation method that warning function module carries out speech communication quality testing is as follows, please refer to Fig. 4, the quality testing flow chart for embodiment of the present invention speech communication:
The BLER (BlockErrorRate) of S011, acquisition upstream data.The BLER value of up channel is calculated in the transmission channel accounting in RNC user face, if BLER value large explanation error code greatly, UE may be in signal edge or the larger area of signal disturbing;
S012, the BLER threshold value 1 comparing BLER value and preset.If BLER value is greater than default BLER threshold value 1, carry out next step S013, otherwise perform S011, restart to detect;
RSCP (ReceiveSignalCodePower) value of the PCPICH (PrimaryCommonPilotChannel) of S013, acquisition UE.UE periodically can send measurement report, comprising the RSCP value of current service cell common signal channel PCPICH to RNC.It is little that UE receives PCPICH power, just illustrates that UE is away from base station;
S014, the RSCP threshold value 2 comparing RSCP value and preset.If RSCP value is less than default RSCP threshold value 2, just carries out next step S015, otherwise forward S011 to, restart to detect;
S015, output AT event message, send to RANAP module by AT event message, pass to CN.
When communication type is video communication, warning function module is further comprising the steps of before carrying out video communication quality testing.Please refer to Fig. 5, the quality testing flow chart for the video communication of the embodiment of the present invention:
S021, UE initiate video call service.
S022, judge whether CN allows 3G to 2G systematic evaluation.When CN is to ServiceHandover cell value HandovertoGSMshouldnotbeperformed in the RAB of RNC (RadioAccessBearer) AssignmentRequest message, represent that this RAB haves no alternative but when UMTS cannot carry just be switched to GSM.Namely 2G system is just switched to when UMTS network signal quality difference.Allow just to perform S023, otherwise perform S025.
Whether S023, judgement CN allow video calling to fall voice call after rise.When business is set up, the SCUIDF (ServiceChangeandUDI/RDIFallback) that CN can be used for performing network-triggered by AlternativeRABConfiguration cell instruction RNC in RABAssignmentRequest allows video to fall operation after rise.After the RABAssignmentRequest message that RNC receives, judge whether AlternativeRABConfiguration cell carries voice call information, if there is AlternativeRABConfiguration cell information, just perform S024, otherwise perform S025.
S024, startup video communication quality testing function, perform S026.
S025, closedown video communication quality testing function.
S026, after call setup, RNC issues the Survey control message of 2E event to this UE, and when network signal quality is deteriorated, UE will report the measurement report of 2E event to RNC, RNC receives the measurement report of 2E event, performs S027.
AT event message, with regard to the AT event message of output video call change, is sent to RANAP module, passes to CN by the warning function module of S027, RNC.
Above-mentioned 2E event is a kind of form of communication quality measurement event between open system.
Embodiment two:
Please refer to Fig. 6, this figure is the flow chart that another embodiment of the present invention realizes early warning.
The Warning Service function that early warning wireless telecommunications system communication quality changes needs according to user and determines, and not all user opens this function, only has the user having customized this Warning Service function just to open this service when conversing.The AT customized information of user is kept in the HLR of CN, and when call setup, customization AT service is delivered to RNC from CN, and RNC receives AT starting command, just starts warning function module.The performing step of the present embodiment is as follows:
S210, user are to carrier customization AT service function, and the UE information having customized AT service function will be kept in the customer data base of HLR.
S220, UE are when making a call, and when MSC reads UE information from HLR, if this UE has customized AT service, MSC just opens AT function.After UE call setup completes, MSC sends newly-increased RANAP signaling AT event control information (ATEventControlMessage) to RNC.In the RANAP signaling of AT event control information, comprise cell have type of message and Control Cooling.
After the RANAP module of S230, RNC receives the RANAP signaling of AT event control information, this signaling is passed to warning function module by RANAP module.
If when the communication type of S240 wireless telecommunications system is speech communication, warning function module carries out speech communication quality testing, and according to testing result, judges whether to produce AT event message; If when communication type is video communication, warning function module carries out video communication quality testing, and according to testing result, judges whether to produce AT event message.The final RANAP module by warning function module, AT event message being passed to RNC.
After RANAP module on S250, RNC receives AT event message, send AT event message to MSC.AT event message is encapsulated in newly-increased RANAP signaling AT event message (ATEventMessage).Type of message and reporting event type is comprised in the cell of AT event message.
After the RANAP module of S260, MSC receives AT event message, parse AT event message, send AT instruction to CAT server.
After S270, CAT server receives the AT instruction of MSC, CAT sends the AT data of specified type to MGW.
AT data are sent UE by S280, MGW.
Adopt present embodiment, because increased the RANAP message of ATEventControlMessage and ATEventMessage newly, not association between message, Message Transmission is simple, belong to non-acknowledgement message, efficiency of transmission is high, customizes the business of this warning function according to user's request simultaneously, also can be operator and bring benefit, add a value-added service content.
Embodiment three:
By Fig. 2, the frame diagram realizing early warning for the embodiment of the present invention is known, a kind of early warning system, comprise RNC, this RNC comprises warning function module, this warning function module for detecting communication quality when wireless telecommunications system carries out communication traffic, and according to testing result, sends early warning event message through core net CN to this wireless telecommunications system when communication quality becomes bad.
Adopt above embodiment, when wireless telecommunications system communication quality will change, network side sends early warning event message to wireless telecommunications system in advance, may stop after wireless telecommunications system receives early warning continuing to move, the communication quality that efficiently avoid wireless telecommunications system changes, even if communication quality changes, also be when user predicts, thus enhance user experience, and relative to other method in prior art, effectively can reduce technical costs.
Above content is in conjunction with concrete execution mode further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a method for early warning for communication quality change, is characterized in that, comprising:
After calling communication set up by wireless telecommunications system, radio network controller (RNC) detects the communication quality that wireless telecommunications system carries out this calling communication, and according to testing result, send early warning event message through core net CN to described wireless telecommunications system when communication quality becomes bad.
2. method for early warning as claimed in claim 1, it is characterized in that, described RNC carries out expansion by the chain of command agreement RANAP signaling between RNC and CN that exchange up-link information and encapsulates described early warning event message, then the RANAP signaling that the up-link information being packaged with described early warning event message exchanges is sent to described CN.
3. method for early warning as claimed in claim 2, it is characterized in that, the information exchange ID and the CN territory that also comprise the response message of the described early warning event message that more described early warning event message is fed back to RNC by the response signaling that described up-link information exchanges with CN indicate whether consistent, if consistent, then represent that described early warning event message sends successfully, if inconsistent, then represent that described early warning event message sends unsuccessfully.
4. method for early warning as claimed in claim 1, it is characterized in that, described early warning event message is packaged into newly-increased RANAP signaling and sends to described CN by described RNC.
5. method for early warning as claimed in claim 1, is characterized in that, also comprise and judge whether wireless telecommunications system opens warning function, and open the prerequisite of warning function at wireless telecommunications system under, sends early warning event message to described wireless telecommunications system.
6. method for early warning as claimed in claim 1, is characterized in that, if the communication traffic of wireless telecommunications system is speech communication, the step detecting communication quality when wireless telecommunications system carries out communication traffic comprises:
Compare the block error rate BLER current measurement value of upstream data and the BLER threshold value preset;
If described BLER current measurement value is greater than described BLER threshold value, then compare the received signal code power RSCP current measurement value of wireless telecommunications system place common signal channel and the RSCP threshold value preset;
If RSCP current measurement value is less than described RSCP threshold value, then send early warning event message to wireless telecommunications system.
7. method for early warning as claimed in claim 1, is characterized in that, if the communication traffic of wireless telecommunications system is video communication, the step detecting communication quality when wireless telecommunications system carries out communication traffic comprises:
RNC issues the Survey control message of communication quality measurement event between open system to wireless telecommunications system;
When network signal quality is deteriorated, wireless telecommunications system is to RNC reporting measurement reports;
RNC receives described measurement report, sends early warning event message to wireless telecommunications system.
8. the method for early warning as described in as arbitrary in claim 1 to 7, it is characterized in that, described early warning event message comprises AT event message.
9. method for early warning as claimed in claim 8, it is characterized in that, the data content of described AT event message generates in self-defined signal language server CATServer.
10. the early warning system of a communication quality change, comprise radio network controller (RNC), it is characterized in that, described RNC comprises warning function module, described warning function module is used for after calling communication set up by wireless telecommunications system, detect the communication quality that wireless telecommunications system carries out this calling communication, and according to testing result, send early warning event message through core net CN to described wireless telecommunications system when communication quality becomes bad.
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| US5684790A (en) * | 1994-07-22 | 1997-11-04 | Mitsubishi Denki Kabushiki Kaisha | Mobile communication system |
| CN1325191A (en) * | 2000-05-24 | 2001-12-05 | 三星电子株式会社 | Warning to small-area escape of moving station in moving communication system |
| JP2005347815A (en) * | 2004-05-31 | 2005-12-15 | Mitsubishi Electric Corp | Mobile wireless apparatus and mobile communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6486724A (en) * | 1987-09-29 | 1989-03-31 | Toshiba Corp | Radio telephone system |
| JP3562459B2 (en) * | 2000-10-17 | 2004-09-08 | 株式会社日立製作所 | Mobile terminal device |
| ATE505044T1 (en) * | 2007-11-29 | 2011-04-15 | Nokia Siemens Networks Oy | RADIO CELL POWER MONITORING AND/OR CONTROL BASED ON TERMINAL POSITIONING DATA AND RADIO QUALITY PARAMETERS |
| US8948738B2 (en) * | 2008-12-17 | 2015-02-03 | International Business Machines Corporation | Generating alerts based on predicted wireless connection losses |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5684790A (en) * | 1994-07-22 | 1997-11-04 | Mitsubishi Denki Kabushiki Kaisha | Mobile communication system |
| CN1325191A (en) * | 2000-05-24 | 2001-12-05 | 三星电子株式会社 | Warning to small-area escape of moving station in moving communication system |
| JP2005347815A (en) * | 2004-05-31 | 2005-12-15 | Mitsubishi Electric Corp | Mobile wireless apparatus and mobile communication system |
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