CN101540981A - Method and system for performing safety ability negotiation during emergent call - Google Patents
Method and system for performing safety ability negotiation during emergent call Download PDFInfo
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- CN101540981A CN101540981A CN200910083287A CN200910083287A CN101540981A CN 101540981 A CN101540981 A CN 101540981A CN 200910083287 A CN200910083287 A CN 200910083287A CN 200910083287 A CN200910083287 A CN 200910083287A CN 101540981 A CN101540981 A CN 101540981A
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Abstract
The invention discloses a method and a system for performing safety ability negotiation during emergent call, aiming at solving the technical problem of how to select null algorithm during emergent call of MME and eNB. In the invention, the safety algorithm of MME and eNB is dynamically regulated during emergent call, so that MME and eNB can select null algorithm to continue normal communication process.
Description
Technical field
The present invention relates to carry out in the communications field method of negotiating safety capability, relate in particular to a kind of method and system of in urgent call, carrying out negotiating safety capability.
Background technology
Third generation partner program (3rd Generation Partnership Project, abbreviation 3GPP) grouping system (the Evolved Packet System of evolution, be called for short EPS) by land radio access web (the Evolved UMTS Terrestrial Radio Access Network of evolution, be called for short EUTRAN) and packet-based core networks (Evolved Packet Core the is called for short EPC) composition of EPS evolution.
The EPC packet-based core networks comprise mobile management entity (Mobility Management Entity is called for short MME), and MME is responsible for the processing of ambulant management, Non-Access Stratum signaling and the relevant work of chains of command such as management of user security model.In EUTRAN, base station equipment is the base station (evolvedNode-B is called for short eNB) of evolution, mainly is responsible for radio communication, wireless communications management and the contextual management of mobility.
Non-access layer information between MME and user equipment (UE) (User Equipment) is encrypted and integrity protection.UE sends to MME with UE security capabilities (Security Capability), and MME carries out algorithm and selects according to the UE security capabilities (Security Capability) of UE transmission and the algorithm list of MME support.Wherein, the security capabilities of UE comprises the algorithm list that UE supports, the algorithm list that MME supports is according to priority arrangement.MME issues UE with selected algorithm.
RRC between eNB and user equipment (UE) (User Equipment) (control of Radio resource control Radio Resource) message and UP (User Plane, user's face) message are encrypted and integrity protection.MME is transmitted to eNB with the security capabilities of UE, and eNB carries out algorithm and selects according to the UE security capabilities (Security Capability) of UE transmission and the algorithm list of eNB support.ENB issues UE with selected algorithm.
The algorithm list that algorithm list that above-mentioned MME supports and eNB support comprises list of integrity algorithms and cryptographic algorithm tabulation.The security capabilities that is UE comprises list of integrity algorithms and the cryptographic algorithm tabulation that UE supports, the algorithm list that MME supports comprises list of integrity algorithms and cryptographic algorithm tabulation, and the algorithm list that eNB supports comprises list of integrity algorithms and cryptographic algorithm tabulation.
After the UE network authentication success, MME preserve EUTRAN root key---(Key Access Security Management Entity is abbreviated as K to the access security managing entity key
ASME).MME uses K
ASMEGenerate Non-Access Stratum encryption key K with selected cryptographic algorithm
NASenc, use K
ASMEGenerate Non-Access Stratum integrity protection key K with selected protection algorithm integrallty
NASint
The root key of the Access Layer that uses for eNB is that (Key eNB is abbreviated as K for the base station key of evolution
ENB).ME uses K
ASMEGenerate K with the Non-Access Stratum thus up counter
ENB, and K
ENBSend to eNB.ENB uses K
ENBGenerate RRC encryption key K with selected RRC cryptographic algorithm
RRCenc, use K
ENBGenerate RRC integrity protection key K with selected RRC protection algorithm integrallty
RRCint, use K
ENBGenerate K with selected UP cryptographic algorithm
UPenc
When UE can't pass through network authentication, also need to initiate can't authenticate between UE and the network under the state of urgent call, also can't generate key, so can't carry out safeguard protection.For communication process is normally carried out, MME and eNB need select empty algorithm, but in the prior art, also do not have a kind of method to make MME and eNB can select empty algorithm under the situation of urgent call.
Summary of the invention
In view of this, one of main purpose of the present invention is to provide a kind of method of carrying out negotiating safety capability in urgent call, is used to solve how MME and eNB select empty algorithm under the situation of urgent call technical problem.For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method of carrying out negotiating safety capability in urgent call comprises:
Mobile management entity MME judges that to the request that connects if the described request mark that connects is an emergency call request, then MME adjusts the security algorithm priority list of being supported; The current connection request of MME notice evolution base station eNB is urgent call, and eNB adjusts the security algorithm priority list of being supported; The described adjustment that MME and eNB carry out makes MME and eNB carry out choosing the sky algorithm when algorithm is selected; Or;
Evolution base station eNB judges that to the request that connects if the request that the described request mark that connects is urgent call, then eNB adjusts the security algorithm priority list of being supported, makes eNB carry out choosing the sky algorithm when algorithm is selected.
Based on such scheme; further; the security algorithm priority list that security algorithm priority list and the eNB that described MME supports supported comprises cryptographic algorithm priority list and protection algorithm integrallty priority list, and the method that MME and eNB adjust described security algorithm priority list is: transfer to empty algorithm priority the highest or empty algorithm is transferred to algorithm into unique support.
Further, request is adhered in the described request that connects for MME receives when adhering to, or the initial context that eNB receives sets up request, or handoff request.Carry the sign of urgent call in the described request that connects.
Another object of the present invention is to provide a kind of system that carries out negotiating safety capability in urgent call, for achieving the above object, technical scheme of the present invention is achieved in that
A kind of system that carries out negotiating safety capability in urgent call comprises:
Urgent call judge module: be used to judge whether the request that connects is the request that is designated urgent call; If then notify the first security algorithm adjusting module and the second security algorithm adjusting module to carry out, or notify the second security algorithm adjusting module to carry out;
The first security algorithm adjusting module: be arranged in mobile management entity MME, be used for the security algorithm priority list of being supported is adjusted, make MME carry out choosing the sky algorithm when algorithm is selected;
The second security algorithm adjusting module: be arranged in evolution base station eNB, be used for the security algorithm priority list of being supported is adjusted, make eNB carry out choosing the sky algorithm when algorithm is selected.
Based on such scheme, further, described urgent call judge module comprises:
The first urgent call judge module is arranged in MME, is used to judge whether the request that connects that MME receives is the request that is designated urgent call; If then notifying the first security algorithm adjusting module carries out; The request that connects that described MME receives is for adhering to request;
The second urgent call judge module is arranged in eNB, is used to judge whether the request that connects that eNB receives is the request that is designated urgent call; If then notifying the second security algorithm adjusting module carries out; The request that connects that described eNB receives is that initial context is set up request or handoff request.
Further, the security algorithm priority list of the security algorithm priority list of described MME support and eNB support comprises cryptographic algorithm priority list and protection algorithm integrallty priority list; The described first security algorithm adjusting module and the second security algorithm adjusting module transfer to empty algorithm priority the highest when the request that the described request that connects is urgent call or empty algorithm are transferred to algorithm into unique support.Carry the sign of urgent call in the described request that connects.
Technical solution of the present invention is adjusted the security algorithm of MME and eNB under the situation of urgent call dynamically, makes MME and eNB can choose the sky algorithm, thereby communication process is gone on normally.
Description of drawings
Fig. 1 adjusts the flow chart of supporting algorithm priority during for urgent call of the present invention;
Fig. 2 adjusts the signaling process figure that supports algorithm priority when using attachment flow to initiate urgent call for the present invention;
Fig. 3 is in the urgent call of the present invention, UE with eNB that a MME is connected between adjust the signaling process figure of support algorithm priority when switching;
Fig. 4 is in the urgent call of the present invention, UE with eNB that different MME connects between adjust the signaling process figure that supports algorithm priority when switching.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.
Fig. 1 adjusts the flow chart of supporting algorithm priority during for urgent call, and concrete steps are:
Step 102, MME or eNB receive the request that connects;
For example, MME receives when adhering to adheres to request; Or when switching, the handoff request that eNB receives.
Step 104, MME or eNB judge, if these request marks are the request of urgent call, and do not carry out authentication, change step 106 so, otherwise change step 108.
Step 106, MME or eNB adjust the security algorithm priority list of being supported, empty algorithm priority are transferred to the highest, perhaps empty algorithm are transferred to the algorithm into unique support.
Step 108, MME or eNB do not adjust the security algorithm priority list of being supported.
The signaling process figure of algorithm priority was supported in adjustment when Fig. 2 initiated urgent call for using attachment flow.Shown in figure two, present embodiment comprises:
Step 202, UE sends to eNB and adheres to request, and the indication type of attachment is urgent call in this message.
Step 204, eNB transmits to MME and adheres to request.
Step 206, MME accepts this and adheres to request, judges that this adheres to request type is urgent call.
Step 208, MME does not authenticate, and perhaps, MME accepts authentification failure, and continues attaching process.
Step 210, MME adjusts the priority of the algorithm supported, empty algorithm priority is made as the highest, perhaps empty algorithm is made as the algorithm of unique support.MME adjusts the tabulation of the protection algorithm integrallty supported, and it is the highest or be unique algorithm that empty algorithm is set to priority.MME adjusts the tabulation of the cryptographic algorithm supported, and it is the highest or be unique algorithm that empty algorithm is set to priority.
Step 212; MME carries out the algorithm selection according to the security capabilities of UE and the algorithm list of MME support; because in the algorithm that MME supports; empty algorithm is the high or the most unique algorithm of priority; the Non-Access Stratum protection algorithm integrallty that MME selects is empty algorithm, and the Non-Access Stratum cryptographic algorithm that MME selects is empty algorithm.
Step 213, MME notice UE uses selected empty algorithm.MME and UE bring into use the sky algorithm that non-access layer information is protected
Step 214, MME sends initial context and sets up request, and notice eNB type of attachment is urgent call.Send to adhere to simultaneously and accept message.
Step 216, eNB receives initial context and sets up request, and the judgement type of attachment is urgent call.
Step 218, eNB adjusts the priority of the algorithm supported, empty algorithm priority is made as the highest, perhaps empty algorithm is made as the algorithm of unique support.ENB adjusts the tabulation of the protection algorithm integrallty supported, and it is the highest or be unique algorithm that empty algorithm is set to priority.ENB adjusts the tabulation of the cryptographic algorithm supported, and it is the highest or be unique algorithm that empty algorithm is set to priority.
Step 220; eNB carries out the algorithm selection according to the security capabilities of UE and the algorithm list of eNB support; because in the algorithm that eNB supports; empty algorithm is the high or the most unique algorithm of priority; the RRC protection algorithm integrallty that eNB selects is empty algorithm, and RRC cryptographic algorithm and UP cryptographic algorithm that eNB selects are empty algorithm.
Step 224, eNB sends the RRC connection and reshuffles.
Step 226, UE reshuffles to eNB answer RRC connection and finishes.
Step 228, eNB sends initial context to MME and sets up response.
Step 230, UE sends direct message transfer to eNB.
Step 232, eNB sends to adhere to MME and finishes.
Fig. 3 is in the urgent call, UE with eNB that a MME is connected between adjust the signaling process figure of support algorithm priority when switching.
Step 302, UE sends measurement report to source eNB
Step 304, source base station sends handoff request to target eNB, and indicating this calling in this handoff request is urgent call.
Step 306, target eNB receives handoff request, and the judgement type of attachment is urgent call.
Step 308, the priority of the algorithm that the target eNB adjustment is supported is made as empty algorithm priority the highest, perhaps empty algorithm is made as the algorithm of unique support.Target eNB is adjusted the tabulation of the protection algorithm integrallty supported, and it is the highest or be unique algorithm that empty algorithm is set to priority.Target eNB is adjusted the tabulation of the cryptographic algorithm supported, and it is the highest or be unique algorithm that empty algorithm is set to priority.
Step 310; target eNB is carried out the algorithm selection according to the security capabilities of UE and the algorithm list of target eNB support; because in the algorithm that target eNB is supported; empty algorithm is the high or the most unique algorithm of priority; the RRC protection algorithm integrallty that target eNB is selected is empty algorithm, and RRC cryptographic algorithm and UP cryptographic algorithm that target eNB is selected are empty algorithm.
Step 312, target eNB notice UE uses selected empty algorithm.ENB and UE bring into use the sky algorithm that RRC message and UP message are protected.
Step 314, target eNB sends Handover Request Acknowledge to source eNB.
Step 316, source eNB sends the RRC connection to UE and reshuffles,
Step 318, UE reshuffles to target eNB answer RRC connection and finishes.
Step 320, target eNB need be notified MME to call out simultaneously and be urgent call to the conversion of MME sendaisle.
Step 322, MME replys the passage conversion and confirms, is confirmed to be urgent call simultaneously.If MME changes, MME might arrive the former MME of coming and confirm.
Fig. 4 is in the urgent call, UE with eNB that different MME connects between adjust the signaling process figure that supports algorithm priority when switching.
Step 402, UE sends measurement report to source eNB;
Step 404, source eNB sends handoff request to source MME, comprises the urgent call sign in this handoff request, and indicating this calling is urgent call.
Step 406, source MME receives handoff request, sends to target MME and transmits re-positioning request;
Step 408, target MME sends handoff request to target eNB, and indicating this calling in this handoff request is urgent call.
Step 410, target eNB receive this handoff request, and the judgement type of call is urgent call.
Step 412, the priority of the algorithm that the target eNB adjustment is supported is made as empty algorithm priority the highest, perhaps empty algorithm is made as the algorithm of unique support.Target eNB is adjusted the tabulation of the protection algorithm integrallty supported, and it is the highest or be unique algorithm that empty algorithm is set to priority.Target eNB is adjusted the tabulation of the cryptographic algorithm supported, and it is the highest or be unique algorithm that empty algorithm is set to priority.
Step 414; target eNB is carried out the algorithm selection according to the security capabilities of UE and the algorithm list of target eNB support; because in the algorithm that target eNB is supported; empty algorithm is the high or the most unique algorithm of priority; the RRC protection algorithm integrallty that target eNB is selected is empty algorithm, and RRC cryptographic algorithm and UP cryptographic algorithm that target eNB is selected are empty algorithm.
Step 416, target eNB notice UE uses selected empty algorithm.ENB and UE bring into use the sky algorithm that RRC message and UP message are protected.Can be by follow-up Handover Request Acknowledge, the forwarding reorientation be corresponding, and switching command is notified.
Step 418, target eNB sends Handover Request Acknowledge to target MME.
Step 420, target MME sends to source MME and transmits the reorientation answer.
Step 422, source MME sends switching command to source eNB.
Step 424, source eNB sends switching command to UE
Step 426, UE replys to switch to target eNB and confirms.
Step 428, target eNB send to target MME switches circular.
Step 430, target MME sends the reorientation of transmitting to source MME and finishes.
Step 432, source MME sends the reorientation of transmitting to target MME and finishes affirmation.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (8)
1, a kind of method of carrying out negotiating safety capability in urgent call is characterized in that, comprising:
Mobile management entity MME judges that to the request that connects if the described request mark that connects is an emergency call request, then MME adjusts the security algorithm priority list of being supported; The current connection request of MME notice evolution base station eNB is urgent call, and eNB adjusts the security algorithm priority list of being supported; The described adjustment that MME and eNB carry out makes MME and eNB carry out choosing the sky algorithm when algorithm is selected; Or,
Evolution base station eNB judges that to the request that connects if the request that the described request mark that connects is urgent call, then eNB adjusts the security algorithm priority list of being supported, makes eNB carry out choosing the sky algorithm when algorithm is selected.
2, method according to claim 1; it is characterized in that; the security algorithm priority list that security algorithm priority list and the eNB that described MME supports supported comprises cryptographic algorithm priority list and protection algorithm integrallty priority list, and the method that MME and eNB adjust described security algorithm priority list is: transfer to empty algorithm priority the highest or empty algorithm is transferred to algorithm into unique support.
3, method according to claim 1 is characterized in that, request is adhered in the described request that connects for MME receives when adhering to, or the initial context that eNB receives sets up request, or handoff request.
4, according to claim 1,2 or 3 described methods, it is characterized in that, carry the sign of urgent call in the described request that connects.
5, a kind of system that carries out negotiating safety capability in urgent call is characterized in that, comprising:
Urgent call judge module: be used to judge whether the request that connects is the request that is designated urgent call; If then notify the first security algorithm adjusting module and the second security algorithm adjusting module to carry out, or notify the second security algorithm adjusting module to carry out;
The first security algorithm adjusting module: be arranged in mobile management entity MME, be used for the security algorithm priority list of being supported is adjusted, make MME carry out choosing the sky algorithm when algorithm is selected;
The second security algorithm adjusting module: be arranged in evolution base station eNB, be used for the security algorithm priority list of being supported is adjusted, make eNB carry out choosing the sky algorithm when algorithm is selected.
6, system according to claim 5 is characterized in that, described urgent call judge module comprises:
The first urgent call judge module is arranged in MME, is used to judge whether the request that connects that MME receives is the request that is designated urgent call; If then notifying the first security algorithm adjusting module carries out; The request that connects that described MME receives is for adhering to request;
The second urgent call judge module is arranged in eNB, is used to judge whether the request that connects that eNB receives is the request that is designated urgent call; If then notifying the second security algorithm adjusting module carries out; The request that connects that described eNB receives is that initial context is set up request or handoff request.
7, system according to claim 6 is characterized in that, the security algorithm priority list that security algorithm priority list that described MME supports and eNB support comprises cryptographic algorithm priority list and protection algorithm integrallty priority list; The described first security algorithm adjusting module and the second security algorithm adjusting module transfer to empty algorithm priority the highest when the request that the described request that connects is urgent call or empty algorithm are transferred to algorithm into unique support.
8, system according to claim 5 is characterized in that, carries the sign of urgent call in the described request that connects.
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| CN102036326A (en) * | 2009-09-25 | 2011-04-27 | 华为技术有限公司 | Random access measurement method, switching delay optimization method, device and system |
| CN102378140A (en) * | 2010-08-19 | 2012-03-14 | 中兴通讯股份有限公司 | Method, interoperation function body, mobile switching center and base station for implementing emergency call |
| WO2013123891A1 (en) * | 2012-02-22 | 2013-08-29 | 华为技术有限公司 | Method, device and system for establishing security context |
| CN103686704A (en) * | 2012-09-19 | 2014-03-26 | 华为技术有限公司 | Method and device for communication between terminal and network side |
| CN101883346B (en) * | 2009-05-04 | 2015-05-20 | 中兴通讯股份有限公司 | Safe consultation method and device based on emergency call |
| CN104967984A (en) * | 2015-04-29 | 2015-10-07 | 大唐移动通信设备有限公司 | Method of obtaining information of user equipment (UE) and system of obtaining information of user equipment |
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| CN101883346B (en) * | 2009-05-04 | 2015-05-20 | 中兴通讯股份有限公司 | Safe consultation method and device based on emergency call |
| CN102036326B (en) * | 2009-09-25 | 2014-12-24 | 华为技术有限公司 | Random access measurement method, switching delay optimization method, device and system |
| CN102036326A (en) * | 2009-09-25 | 2011-04-27 | 华为技术有限公司 | Random access measurement method, switching delay optimization method, device and system |
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| CN102378140B (en) * | 2010-08-19 | 2015-08-12 | 中兴通讯股份有限公司 | Emergency call realization method, interoperability functive, mobile switching centre and base station |
| CN103297958B (en) * | 2012-02-22 | 2017-04-12 | 华为技术有限公司 | Security context establishing method, device and system |
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| US10084594B2 (en) | 2012-02-22 | 2018-09-25 | Huawei Technologies Co., Ltd. | Method, apparatus, and system for performing an establishment of a security context between a user equipment and an access node |
| WO2013123891A1 (en) * | 2012-02-22 | 2013-08-29 | 华为技术有限公司 | Method, device and system for establishing security context |
| US9673974B2 (en) | 2012-02-22 | 2017-06-06 | Huawei Technologies Co., Ltd. | Method, apparatus, and system for performing an establishment of a security context between user equipment and an access node by a base station |
| CN103686704B (en) * | 2012-09-19 | 2017-02-15 | 华为技术有限公司 | Method and device for communication between terminal and network side |
| CN103686704A (en) * | 2012-09-19 | 2014-03-26 | 华为技术有限公司 | Method and device for communication between terminal and network side |
| CN104967984B (en) * | 2015-04-29 | 2019-04-05 | 大唐移动通信设备有限公司 | A kind of method and system for the information obtaining user equipment |
| CN104967984A (en) * | 2015-04-29 | 2015-10-07 | 大唐移动通信设备有限公司 | Method of obtaining information of user equipment (UE) and system of obtaining information of user equipment |
| CN110612729A (en) * | 2017-05-05 | 2019-12-24 | 华为技术有限公司 | Anchor key generation method, device and system |
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| CN111092998A (en) * | 2020-02-21 | 2020-05-01 | 深圳震有科技股份有限公司 | Telephone emergency calling method, system and storage medium |
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