CN101106824A - Method and wireless network controller for enabling encryption in call establishment process - Google Patents
Method and wireless network controller for enabling encryption in call establishment process Download PDFInfo
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- CN101106824A CN101106824A CNA2007101380667A CN200710138066A CN101106824A CN 101106824 A CN101106824 A CN 101106824A CN A2007101380667 A CNA2007101380667 A CN A2007101380667A CN 200710138066 A CN200710138066 A CN 200710138066A CN 101106824 A CN101106824 A CN 101106824A
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- 230000000977 initiatory effect Effects 0.000 abstract 3
- 230000003213 activating effect Effects 0.000 abstract 1
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- 238000004891 communication Methods 0.000 description 1
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Abstract
The invention relates to a method for initiating encryption during call establishing procedure and a wireless network controller. The method includes receiving a message of that a call has been established; determining whether the present time is longer than the encryption activating time provided in the message; and if yes, initiating encryption using the exceed frame number in the message and the present connecting frame number at network side as the encryption parameters. Synchronization of encryption parameters of RNC and the encryption terminal is ensured, therefore flow noise of audio is prevented and the audio quality is further ensured. The wireless network controller includes a message receiving module, a time determining module and an encryption initiating module to ensure synchronization of encryption parameters of RNC and the encryption terminal, therefore flow noise of audio is prevented and the audio quality is further ensured.
Description
Technical field
The present invention relates to a kind of mobile communication technology, relate in particular to startup method of encrypting and radio network controller in a kind of call establishment.
Background technology
Along with developing rapidly of the communication technology, the user is more and more higher for the safety requirements of speech business.Wherein, Wideband Code Division Multiple Access (WCDMA) (WCDMA) mobile communcations system ensures network and user's safety by in call establishment user signaling and data being encrypted.As shown in Figure 6, be that existing call is set up process and comprised on 0-255 Connection Frame Number (CFN) time shaft 7 in scope:
Step 1: radio network controller (RNC) is set up request message " RBSetup Request " to the radio bearer that terminal sends, and sets up a calling setting up the time point of radio bearer " TRbSetup " 71; Wherein, carry the activationary time that channel switches in " RB Setup Request " message, activationary time is designated as " Tact " 72.
Step 2: through the air interface transmission, terminal is received " RB Setup Request " message.
Step 3: terminal activates new configuration at Tact, in new configuration, send " RB SETUPCOMPLETE " message then to RNC, show professional foundation successfully, finish in the message " RB SETUP COMPLETE " in RB foundation, terminal provides the time point " TCipher " 74 and the CFN and the Hyper Frame Number (HFN) of this moment of beginning ciphering activation, fix on time point " TCipher " 74 approximately, terminal and RNC enable the CFN and the HEN that provide simultaneously data are encrypted.
Step 4: suppose that RNC receives " RB SETUP COMPLETE " message at time point " TRbSetupCmp " 73.
Step 5: at ciphering activation time point " TCipher " 74, RNC and terminal are imported new argument CFN, HFN simultaneously, start to encrypt, and speech data is encrypted.
In realizing process of the present invention, the inventor finds prior art, and there are the following problems at least: simultaneously to network-originated call, cause re-transmission as great amount of terminals because the air interface error code is too high, or reason such as propagation delay time is long, call establishment comprises as shown in Figure 7:
Step 1 ': RNC sends " RB Setup Request " message at time point " TRbSetup " 71 to terminal.
Step 2 ': terminal is received " RB Setup Request " message.
Step 3 ': terminal activates new configuration at " Tact " 72, in new configuration, send " RBSETUP COMPLETE " message then to RNC, terminal provides the CFN of ciphering activation time " TCipher " and this moment in " RB SETUP COMPLETE " message, fixes on this point terminal and RNC approximately and starts encryption simultaneously.
Step 4 ': after the message that terminal sends arrives RNC, when this message stops in message queue, the ciphering activation time " TCipher " 74 of terminal agreement has arrived, so terminal has started encryption at " TCipher " 74, but this time, RNC also was not activated encryption.
Step 5 ': the time point " TRbSetupCmp " 75 of call treatment part after " TCipher " 74 of RNC received " RB SETUP COMPLETE " message, so RNC continues stand-by period point " TCipher " 74.
Step 6 ': RNC arrives " TCipher " once more and started encryption at 74 o'clock after the CFN circulation, this moment, the CFN of RNC and UE was consistent, and both HFN are inconsistent, because after the circle circulation through CFN, the HFN of terminal has added 1, still is HFN in " RB SETUPCOMPLETE " message and the RNC configuration is used when encrypting, like this, HFN was inconsistent when terminal and RNC started encryption, and the data that cause both sides to send all can not be resolved by the other side, singing of the stream occurs.
Summary of the invention
The one side of the embodiment of the invention is to propose to start method of encrypting in a kind of call establishment, to solve the singing of the stream problem in the voice.
The embodiment of the invention be to propose a kind of radio network controller on the other hand, to solve the singing of the stream problem in the voice.
Some embodiment of one aspect of the present invention provide in a kind of call establishment and have started method of encrypting, comprising:
Receipt of call is set up and is finished message, and described call setup is finished and comprised Connection Frame Number and Hyper Frame Number in the message;
Judge according to described Connection Frame Number and Hyper Frame Number whether the current time surpasses described call setup the ciphering activation time that provides in the message is provided;
If the current time surpasses the described ciphering activation time, the Hyper Frame Number of then described call setup being finished in the message starts encryption with the current Connection Frame Number of network side as encryption parameter.
Whether technique scheme surpasses the ciphering activation time that terminal provides by judging the current time, solved because transmission delay causes that CFN causes the inconsistent problem of encryption parameter of RNC and terminal, RNC can start encryption when having guaranteed to eat dishes without rice or wine the generation of error code or transmission delay in the fastest time, thereby the synchronous consistency of the encryption parameter that has guaranteed RNC and terminal, thereby avoided the generation of the singing of the stream in the voice, further ensured voice quality.
The present invention some embodiment on the other hand provide a kind of radio network controller, in be provided with: message sink module, time judgment module and ciphering startup module; Wherein, the message sink module is used for receipt of call and sets up and to finish message; Time judgment module is used for judging whether the current time surpasses the ciphering activation time that described call setup is finished message; The ciphering startup module is used for starting encryption according to the judged result of described time judgment module.
This programme is by modules such as time judgements, guaranteed that radio network controller can start encryption when eating dishes without rice or wine the generation of error code or transmission delay in the fastest time, thereby guaranteed synchronous consistency with the encryption parameter of terminal, avoid the generation of the singing of the stream in the voice, further ensured voice quality.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is for starting the flow chart of method of encrypting embodiment one in the call establishment of the present invention;
The RNC time-delay receives the message schematic diagram to Fig. 2 among the method for encrypting embodiment one in order to start in the call establishment of the present invention;
Fig. 3 is for starting the flow chart of method of encrypting embodiment two in the call establishment of the present invention;
Fig. 4 is for starting the schematic diagram under the CFN loop condition among the method for encrypting embodiment two in the call establishment of the present invention;
Fig. 5 is the structural representation of radio network controller embodiment of the present invention;
Fig. 6 is a prior art call setup schematic flow sheet;
Fig. 7 is a prior art Call failure schematic flow sheet.
Embodiment
Method embodiment one
Fig. 1 comprises for starting the flow chart of method of encrypting embodiment one in the call establishment of the present invention:
After step 101:RNC receives " RB SETUP COMPLETE " message of terminal transmission, RNC calculates the ciphering activation time that terminal provides that obtains according to HFN that comprises in " RB SETUP COMPLETE " message and CFN, and compare with the time of self maintained, judge whether the current time surpasses the ciphering activation time that " RB SETUPCOMPLETE " message provides; If, show that terminal has started encryption, then the RNC execution in step 102; Otherwise, show that " RB SETUP COMPLETE " message is not delayed processing, execution in step 103.
The current C FN that HFN in step 102:RNC employing " RB SETUP COMPLETE " message and RNC safeguard is as encryption parameter, start and encrypt, avoided RNC to wait for causing the CFN circulation to cause RNC and terminal encryption parameter inconsistent, thereby made voice the abnormal conditions of singing of the stream occur.It will be appreciated by those skilled in the art that, RNC can adopt current C FN that HFN in " RB SETUP COMPLETE " message and RNC safeguard as encryption parameter, start immediately and encrypt, can guarantee that like this " RB SETUP COMPLETE " message is delayed under the situation of processing, RNC can start encryption in the fastest time, make voice signal normal.Referring to Fig. 2, before CFN circulates, RNC receives " RB SETUP COMPLETE " message, but, the time that receives is later than the ciphering startup time that terminal provides, start immediately to encrypt and avoided the RNC mistake to wait for the ciphering startup time, further guaranteed the synchronous crypto-operation of RNC and terminal.
Step 103: HFN that time point employing " RB SETUPCOMPLETE " message that provides in " RB SETUP COMPLETE " message provides and CFN start and encrypt as encryption parameter.
Method embodiment two
Fig. 3 specifically may further comprise the steps for starting the flow chart of method of encrypting embodiment two in the call establishment of the present invention:
After step 201:RNC receives " RB SETUP COMPLETE " message of terminal transmission, judge whether the current time " the ciphering activation time that provides in the RB SETUP COMPLETE message is provided; If, execution in step 202; Otherwise, execution in step 206.
Step 202:RNC judges " whether RB SETUP COMPLETE message CFN in transmission course circulates, if hypothesis CFN has circulated execution in step 203 1 time in the present embodiment; Otherwise, execution in step 205.
Step 203:RNC calculates HFN according to " START VALUE " value that " RB SETUP COMPLETE " message provides, and HFN is added 1.Then enter step 204.
Step 204: the current C FN that adopts HFN+1, RNC maintenance starts and encrypts as encryption parameter.As shown in Figure 4, the current C FN that adopts HFN+1 and RNC maintenance is as encryption parameter, avoided because " RB SETUP COMPLETE " message delay is handled CFN circulation takes place makes RNC and terminal HFN inconsistent, cause RNC and terminal encryption parameter to differ and cause voice to produce the abnormal conditions of singing of the stream, still can keep RNC consistent under the situation that makes CFN circulate, guarantee the normal of voice with the encryption parameter of terminal.
Step 205: the current C FN that adopts HFN, RNC maintenance starts and encrypts as encryption parameter.
Step 206: the time point in that " RB SETUP COMPLETE " message provides, starts and encrypts as encryption parameter according to " RB SETUPCOMPLETE " CFN, HFN that message provided.
When RNC receives " RB SETUP COMPLETE " message, though CFN circulates, but the CFN that no show still " RB SETUP COMPLETE " message provides, during CFN that to be current C FN provide less than " RB SETUPCOMPLETE " message, RNC also can continue to wait for, when current C FN equals CFN that " RB SETUP COMPLETE " message provides once more, HFN is added the cycle-index of CFN, and the CFN that provides with " RB SETUP COMPLETE " message starts as encryption parameter and encrypts.
Radio network controller embodiment
Fig. 5 is provided with message sink module 12, time judgment module 13 and ciphering startup module 14 for the structural representation of radio network controller embodiment of the present invention in the radio network controller 11; Wherein, message sink module 12 is set up from the user terminal receipt of call and is finished message promptly, provides the ciphering activation time in " RB SETUP COMPLETE " message; Time judgment module 13 judges that whether the current time surpass described call setup and finish ciphering activation time in the message, if surpass, then ciphering startup module 14 starts encryption according to the current C FN that HFN in " RB SETUP COMPLETE " message and RNC safeguard; Finish ciphering activation time in the message if surpass described call setup, then start encryption according to the HFN that " RB SETUP COMPLETE " message provides with CFN in the ciphering activation time.Adopt the radio network controller that the embodiment of the invention provided, guaranteed that " RB SETUP COMPLETE " message is delayed under the situation of processing, RNC can start encryption in the fastest time, make voice signal normal.
Among the above-mentioned controller embodiment, RNC also can comprise cycle criterion module and addition module, wherein, the cycle criterion module is used for judging whether circulate at " RB SETUP COMPLETE " message transmitting procedure CFN, if, then addition module cycle-index and HFN addition that the CFN in " RB SETUP COMPLETE " message is taken place, ciphering startup module will CFN in " RB SETUP COMPLETE " message cycle-index with HFN's and with the current C FN of radio network controller maintenance as encryption parameter startup encryption; Otherwise, current C FN and RB SETUPCOMPLETE that the ciphering startup module is safeguarded radio network controller " HFN that carries in the message starts as encryption parameter and encrypts; guaranteed that radio network controller can receive under the situation of " RB SETUP CMP " message in time-delay; import the encryption parameter consistent with terminal; thus avoided the generation of the voice flow underwater sound, guaranteed voice normally.
Whether said method embodiment surpasses the ciphering activation time that terminal provides by judging the current time, effectively avoided because RNC and the inconsistent generation that causes the voice flow underwater sound of terminal encryption parameter, the error code that guaranteed to eat dishes without rice or wine is too high cause retransmit or situation that transmission delay is long under voice normally.Above-mentioned controller embodiment is by modules such as time judgements, guaranteed radio network controller the error code of eating dishes without rice or wine too high cause retransmit or situation that transmission delay is long under, can in the fastest time, start encryption, make voice signal normal.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (6)
1. start method of encrypting in a call establishment, it is characterized in that, comprising:
Receipt of call is set up and is finished message, and described call setup is finished and comprised Connection Frame Number and Hyper Frame Number in the message;
Judge according to described Connection Frame Number and Hyper Frame Number whether the current time surpasses described call setup the ciphering activation time that provides in the message is provided;
If the current time surpasses the described ciphering activation time, the Hyper Frame Number of then described call setup being finished in the message starts encryption with the current Connection Frame Number of network side as encryption parameter.
2. method according to claim 1 is characterized in that, described method also comprises:
Judge whether the Connection Frame Number that described call setup is finished in the message circulates in transmission course;
If described Connection Frame Number circulates, then described cycle-index and described call setup are finished the Hyper Frame Number addition in the message, with the current Connection Frame Number of described network side as encryption parameter startup encryption.
3. method according to claim 2 is characterized in that, if described Connection Frame Number does not circulate, then carries out described: the Hyper Frame Number that described call setup is finished in the message starts encryption with the current Connection Frame Number of network side as encryption parameter.
4. method according to claim 1 is characterized in that, described method also comprises:
Judge whether the Connection Frame Number that described call setup is finished in the message circulates in transmission course;
If described Connection Frame Number circulates, then described cycle-index and described call setup are finished the Hyper Frame Number addition in the message, and judge that whether current Connection Frame Number finish Connection Frame Number in the message less than described call setup, if, wait until that then described current Connection Frame Number and described call setup finish Connection Frame Number in the message when consistent, described Hyper Frame Number is added that value after the cycle-index finishes Connection Frame Number in the message with described call setup and start as encryption parameter and encrypt; Otherwise, described Hyper Frame Number is added that the value after the cycle-index starts encryption with the current Connection Frame Number of described network side as encryption parameter.
5. a radio network controller is characterized in that, in be provided with:
The message sink module is used for receipt of call foundation and finishes message;
Time judgment module is used for judging whether the current time surpasses the ciphering activation time that described call setup is finished message;
The ciphering startup module is used for starting encryption according to the judged result of described time judgment module.
6. radio network controller according to claim 5 is characterized in that, also comprises:
The cycle criterion module is used for judging that call setup finishes the Connection Frame Number of message and whether circulate in transmission course, and obtains cycle-index;
Addition module is used for cycle-index and Hyper Frame Number addition with described cycle criterion module records;
Described ciphering startup module also is used for further starting encryption according to the judged result of described cycle criterion module and the add operation result of described addition module.
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| CN2007101380667A CN101106824B (en) | 2007-08-08 | 2007-08-08 | Method and wireless network controller for enabling encryption in call establishment process |
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| CN2007101380667A CN101106824B (en) | 2007-08-08 | 2007-08-08 | Method and wireless network controller for enabling encryption in call establishment process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101933387A (en) * | 2008-01-31 | 2010-12-29 | 日本电气株式会社 | Communications system |
| WO2016192218A1 (en) * | 2015-06-02 | 2016-12-08 | 中兴通讯股份有限公司 | Voice encryption error detection method and apparatus |
| CN112055378A (en) * | 2019-06-05 | 2020-12-08 | 成都鼎桥通信技术有限公司 | Method and device for judging voice quality of narrow-band digital cluster |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1218522C (en) * | 2002-06-06 | 2005-09-07 | 华为技术有限公司 | Method for obtaining initial connection frame number in broadband CDMA mobile communication system |
| CN101005509B (en) * | 2007-01-19 | 2010-09-29 | 华为技术有限公司 | Enciphering configuration method and its device in 3GPP system |
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2007
- 2007-08-08 CN CN2007101380667A patent/CN101106824B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101933387A (en) * | 2008-01-31 | 2010-12-29 | 日本电气株式会社 | Communications system |
| US8565432B2 (en) | 2008-01-31 | 2013-10-22 | Nec Corporation | Communications system |
| CN101933387B (en) * | 2008-01-31 | 2014-08-13 | 日本电气株式会社 | Communications node and method for executing when communications node |
| CN103209409B (en) * | 2008-01-31 | 2016-12-28 | 日本电气株式会社 | Communication system |
| WO2016192218A1 (en) * | 2015-06-02 | 2016-12-08 | 中兴通讯股份有限公司 | Voice encryption error detection method and apparatus |
| CN112055378A (en) * | 2019-06-05 | 2020-12-08 | 成都鼎桥通信技术有限公司 | Method and device for judging voice quality of narrow-band digital cluster |
| CN112055378B (en) * | 2019-06-05 | 2023-05-09 | 成都鼎桥通信技术有限公司 | Method and device for judging voice quality of narrow-band digital cluster |
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| CN101106824B (en) | 2010-12-08 |
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Effective date of registration: 20211223 Address after: 450046 Floor 9, building 1, Zhengshang Boya Plaza, Longzihu wisdom Island, Zhengdong New Area, Zhengzhou City, Henan Province Patentee after: xFusion Digital Technologies Co., Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |
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