CN101330462A - Method for implementing network safety gradation in the next generation network - Google Patents
Method for implementing network safety gradation in the next generation network Download PDFInfo
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- CN101330462A CN101330462A CNA2008101262701A CN200810126270A CN101330462A CN 101330462 A CN101330462 A CN 101330462A CN A2008101262701 A CNA2008101262701 A CN A2008101262701A CN 200810126270 A CN200810126270 A CN 200810126270A CN 101330462 A CN101330462 A CN 101330462A
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Abstract
The invention discloses a method for realizing network security grading in next generation networks (NHN), which comprises the following steps: subscribing a network security grade in accordance with the security demand of a subscriber on different services during subscriber registration as subscription information; a resource control part receives a resource allocation request carrying the network security grade; the resource control part requests the subscription information to a network access control part, and the network access control part transmits the subscribed network security grade to the resource control part in the response; the resource control part compares and analyzes the network security grade in the resource allocation request and the subscribed network security grade, and determines the final network security grade; the resource control part determines a logical entity or a physical entity supporting the final network security grade; a transmission part, a subscriber terminal or a subscriber network part transmits subscriber data according to the received final network security grade. The method eliminates the influence of security measures on service quality.
Description
Technical field
The present invention relates to a kind of communication technology, specifically, relate to network safety grade implementation method in a kind of next generation network.
Background technology
TDM circuit, ATM, FR etc. are provided on IP network,, are called Everythingover IP or Internet Protocol to support traditional business.Along with the development of Everything over IP, in order to satisfy the user to the demand of packet network at QoS (Quality of Service, service quality) aspect, industry has proposed NGN (Next Generation Networks, next generation network).NGN is based on group technology, adopts operation layer and transport layer is separated from each other, uses and professional control is separated from each other, transmits control and the thought that transmission is separated from each other, and can support existing various access technology; Business such as speech, data, video, Streaming Media can be provided; Can support the miscellaneous service on the existing mobile network, realize fixed network and mobile network's fusion; Can guarantee the service quality of customer service according to user's needs.
As shown in Figure 1, be NGN architectural framework figure of the prior art.The NGN architectural framework comprises network insertion control section, resource control part, translator unit, professional control section and user terminal/user network part.
The network insertion control section partly provides functions such as registration, Authentication Authorization, address assignment, parameter configuration, location management for the user terminal/user network that inserts the NGN network.For example, network attachment controlled function (Network Attachment Control Functions) in Network Attachment Subsystem (Network Attachment Subsystem), the ITU-T NGN network in TISPAN (telecommunications and the Internet converged services and high-level network protocol) the NGN network.
Resource control part is based on strategy and network resource status, admits functions such as control, resource reservation when finishing user terminal/user network part access network.For example, strategy and charging rule functions (Policy and Charging Rules Function) among TISPAN NGN resources in network accommodation control subsystem (Resource and Admission Control Subsystem), ITU-T NGN resources in network accommodating control function (Resource and Admission Control Functions), the 3GPP mobile network.Translator unit is finished the transmitting function of information, and for example TISPAN transmits in processing capacity (Transport processingfunctions), the ITU-T NGN network strategy and charge execution function (Policy and Charging Enforcement Function) among transmitting function (Transport Functions), the 3GPP mobile network.
Professional control section belongs to the part in the operation layer, finishes functions such as registration, Authentication Authorization, resource control on professional level.For example, in the TISPAN NGN network in professional control subsystem (ServiceControl Subsystems), the ITU-T NGN network among service control function (Service ControlFunctions), the 3GPP mobile network IMS territory (IP Multimedia Subsystem).
User terminal/user network partly is used for providing network access facility to the user.For example, portable terminal/wireless side among CPE among the ITU-TNGN/TISPAN NGN (Customer Premises Equipment, ustomer premises access equipment)/CPN (Customer Premises Network, the local network of users), the 3GPP mobile network.
Exist various users and various business on the NGN.Different users has different demands for security and QoS requirement, same user has different demands for security and QoS requirement for different business, even same user also may have different demands for security and QoS requirement for same business under the different application environment.When validated user terminal/subscriber network portion is used NGN, in order to guarantee service quality, resource control part will be according to service request (comprising parameters such as service priority, service bandwidth demand) and network resource status information, admit control and network resource reservation based on moving speed decision-making, in this process, do not consider the influence of safety measure at present service quality.In fact, if the user does not have the network safety grade that satisfies in the service request,, can not carry out network service although there are the resources such as bandwidth of service request in network.
Summary of the invention
The technical problem to be solved in the present invention provides network safety grade implementation method in a kind of next generation network, has eliminated the influence of safety measure to service quality.
In order to address the above problem, the invention provides network safety grade implementation method in a kind of next generation network, comprising:
When the user registers, at different business, according to the user to service security demand subscription network safe class as CAMEL-Subscription-Information, or adopt default network safety grade as CAMEL-Subscription-Information, leave in the user signing contract information database;
Resource control part receives resource allocation request, carries network safety grade in the described resource allocation request; Described resource control part is to the described CAMEL-Subscription-Information of network insertion control section request, and the network safety grade that described network insertion control section is contracted the user in response sends described resource control part to;
Described resource control part is analyzed the network safety grade that the network safety grade in the described resource allocation request and user contract, and determines final network safety grade;
Described resource control part determine to be supported the logic entity or the physical entity of described final network safety grade;
Translator unit, user terminal or user network part transmit user data according to the described final network safety grade of deciding after receiving described final network safety grade.
Further, described resource control part is revised the QoS parameter in the resource allocation request according to described final network safety grade, and carries out resource allocation according to revised QoS parameter.
Further, described resource control part partly receives described resource allocation request from professional control section, translator unit, user terminal or home network.
Further, do not carry network safety grade in the described resource allocation request, then the network safety grade in the user signing contract information is as final network safety grade.
Further, described resource control part is when using described final network safety grade, partly carry out alternately with translator unit, user terminal or user network, resource policy is carried out, resource allocation is carried out or when transmitting the result of decision, comprise described final network safety grade.
Further, described comparative analysis result comprises: the refusal resource allocation request, consult the network safety grade or the final network safety grade of making a strategic decision out again;
When described situation of consulting network safety grade again occurring, through consulting again, final decision result comprises: the refusal resource allocation request or the final network safety grade of making a strategic decision out.
Further, described network safety grade is according to the unified planning of security strategy rule request, the corresponding one group of security parameter of each grade.
Further, described resource control part comprises network safety grade in network resource status information, and described network safety grade obtains by dynamical fashion or static mode.
Further, between the described resource control part during exchange message, during perhaps described resource control part internal exchange message, comprise described final network safety grade.
Technique effect is as follows:
In the prior art, when the user does not have the network safety grade that satisfies in the service request, even there are the resources such as bandwidth of service request in network, can not carry out network service, so among the present invention, before business being admitted control and resource allocation, the authority that whether has network safety grade in the use service request by the checking user solves defective of the prior art, has eliminated the influence of safety measure to service quality.
Description of drawings
Fig. 1 is NGN architectural framework figure of the prior art;
Fig. 2 is the flow chart of network safety grade implementation method among the NGN in the embodiment of the invention.
Embodiment
Below in conjunction with drawings and Examples technical scheme of the present invention is described in detail.
At the network insertion control section, there is a database of preserving user signing contract information, for example HLR/HSS among PDBF, the 3GPP mobile network among TUP, the TISPAN NGN among the ITU-TNGN.
When the present invention registers the user, increase the network safety grade CAMEL-Subscription-Information, promptly at different business, according to the user to the service security demand, signatory particular network safe class is as CAMEL-Subscription-Information, CAMEL-Subscription-Information leaves in the user signing contract information database, and/or default network safety grade is left in the user signing contract information database as CAMEL-Subscription-Information.
Network safety grade can adopt: admit control mode, the NAT mode, the terminal security Agent Type, the data encryption type, data encryption key, the data integrity type, the data integrity key length, the authentification of user type, subscriber authentication key length, data origin/recipient's auth type, data origin/recipient's authenticate key length, the non-repudiation type, the non-repudiation key length, the access control type, the anti-rubbish mail type, security parameters such as anti-refuse messages type are described.These security parameters both may occur simultaneously according to the security strategy rule request, also a part may only occur.Above-mentioned security parameter is used for characterizing network safety grade, carries out network safety grade, disposes automatically according to these security parameters exactly.
When resource control part when professional control section, translator unit, home networking gateway or other resource control part receive resource allocation request, may need to carry network safety grade information in the resource allocation request, in order to network safety grade that user's requested service need possess or the network safety grade that the user asked to be described.For example, needing to increase network safety grade (Network SecurityClass or Network Security Level) in the medium summaries (Media Profile) on the Rs reference point between professional control section of ITU-T NGN and the resource control part in the QoS resource information sub-component information unit (QoS Resource Information Components) (also can be called media safety and describe Media SecurityDescription, service security is described Service Security Description, differentiation security service Differentiated Security Service, or the like) information.As shown in table 1, be the medium summaries (Media Profile) that transmit on the Rs reference point between ITU-T NGN service control layer and the resource key-course with network safety grade information.
Table 1
| Information unit (Information Component) | Describe (Description) |
| Medium summaries (Media Profile) | Be used for the set of the information sub-component of media session, can form (rtp streaming and the RTCP stream that for example are used for voip call) by data flow and control flows.Available in case of necessity asterisk wildcard is represented sub-component.A set of information sub-components for a media session, which may be composed of data flows and control flows (e.g., RTP and RTCP flows for a VoIP call) .The sub-components in a media profile can be represented by a wildcard as needed. |
| Medium number (Media Number) | The identifier (for example SDP " m=" serial number of line position) that is used for media session.An identifier for a media session (e.g., ordinal number of the position of the " m=" line in the SDP). |
| Type of service (Type of Service) | The type of service of media data flow (as voice, visual telephone, or video flowing).Indication?of?service?type?for?the?media?data?flow |
| (e.g., voice, video telephony, or streaming video). | |
| Applied business class (optional) (Application Class of Service) (Optional) | Media application service class between resource request terminal and the decision making function entity (PD-FE) (for example, the first order) have local significance, decision making function entity (PD-FE) will be based on SLA and the network strategy rule this applied business class being converted into the Network class.The application service class for the media (e.g., first class) is of local significance between the resource request client (i.e., the owner of SCF) and the owner of PD-FE, and is to be converted by PD-FE to Network Class of Service (e.g., Y.1541 class for performance requirement) based on SLA and network policy rules. |
| Media priority (optional) (Media Priority) (Optional) | The information (for example TDR/ETS) that is used for processed.Information for priority handling (e.g., TDR/ETS). |
| Media Stream is described (Media Flow Description) | The set of single or group media stream sub-component in media session.A set of sub-components of individual or a group of media flows within a media session. |
| Media safety is described (Media Security Description) | The security parameter relevant with Media Stream described. |
On the Gq ' reference point between professional control section of TISPAN NGN and the resource control part, need to increase network safety grade (Network Security Class or Network Security Level) (also can be called media safety is described Media Security Description, service security is described Service Security Description, differentiation security service Differentiated Security Service, or the like) information in media description in the resource reservation request information (Media Description) information.As shown in table 2, be the media description with network safety grade information (Media Description) information that transmits on the Gq ' reference point between TISPAN NGN service control layer and the resource key-course.
Table 2
Resource control part may need to network insertion control section request user signing contract information, this moment, the network insertion control section was in user signing contract information request response, may need network safety grade that the user is contracted and/or default network safety grade information to send resource control part to.For example, at ITU-T
Among the NGN, on the Ru reference point between resource control part and the network insertion control section, transmit resource information and reply (Transport Resource Information Response), transmitting in the resource information indication message such as (Transport Resource Information Indication) needs to comprise network safety grade information; In TISPAN NGN, on the e4 reference point between resource control part and the network insertion control section, inserting summary release (Access Profile Push) and inserting to make a summary to draw in the message such as (Access ProfilePull) needs to comprise network safety grade information.
Resource control part is after receiving network safety grade that the user contracts and/or default network safety grade information, if do not carry network safety grade information in the resource allocation request, network safety grade in the time of then can using network safety grade that the user contracts and/or default network safety grade as resource allocation decisions directly draws the result of decision.If carry network safety grade information in the resource allocation request, then network safety grade that itself and user are contracted and/or default network safety grade are analyzed, and draw the result of decision.
Resource control part is partly carrying out alternately with translator unit and/or user terminal/user network, carries out resource policy execution and resource allocation and carries out, and when transmitting the result of decision, may need to comprise network safety grade information.For example, in ITU-T NGN, on the Rw reference point between translator unit and the resource control part, in mutual medium summary (Media Profile) information, need comprise network safety grade information.As shown in table 3, be among the ITU-T NGN, medium summary (Media Profile) information that transmits on the Rw reference point between transport layer and the resource key-course with network safety grade (Network Security Class or Network SecurityLevel) (also can be called media safety is described Media Security Description, service security is described Service Security Description, differentiation security service Differentiated Security Service, or the like) information.
Table 3
| Information unit (Information Component) | Describe (Description) |
| Medium summaries (Media Profile) | Be used for the set of the information sub-component of media session, can form (RTP and the RTCP stream that for example are used for voip call) by data flow and control flows.Available in case of necessity asterisk wildcard is represented sub-component.A set of information sub-components for a media session, which may be composed of data flows and control flows (e.g., RTP and RTCP flows for a VoIP call) .The sub-components in a media profile can be represented by a wildcard as needed. |
| Medium number (Media Number) | The identifier (for example SDP " m=" serial number of line position) that is used for media session.An identifier for a media session (e.g., ordinal number of the position of the " m=" line in the SDP). |
| Network class (optional) (Network Class of Service) (Optional) | The Network class (as diamond, gold medal, silver medal, routine) that the representative of consumer terminal is submitted to, it may comprise QoS performance classes (as class Y.1541).This parameter only has local significance for the single operator that has transfer resource.This parameter can be mapped as by Service Control Unit (SCF) policing rule Network Based and service level agreement (SLA) and use CoS, and can be used for transfer resource control and transmission request authentication.Represents the network service class subscribed by a CPE (e.g., Premium, Gold, Silver, and Regular) .It may include the QoS performance class (e.g., Y.1541 class). This parameter is only of local significance for a single operator owning the transport resource, which can be mapped from application CoS issued by the SCF based on network policy rules and SLA and can be used for the transport resource control and authorization of transport subscription. |
| Media priority (optional) (Media | The information (for example TDR/ETS) that is used for processed.Information?for?priority?handling(e.g.，TDR/ETS). |
| Priority) (Optional) | |
| Routing information (optional) (Path Selection Information) (Optional) | What policy execution entity (PE-FE) was used for Media Stream enters/goes out routing information (as VPN ID) with the irrelevant core net of technology.The technology independent core network ingress/egress path information at the PE-FE for a media flow (e.g., VPN ID). |
| Media Stream is described (Media Flow Description) | The set of single or group media stream sub-component in the media session.A set of sub-components of individual or a group of media flows within a media session. |
| Media safety is described (Media Security Description) | The security parameter relevant with Media Stream described. |
In TISPAN NGN, during exchange message, also need network safety grade information is comprised to come on Ia reference point between translator unit and the resource control part and the Re reference point.
When exchange message, also need network safety grade information is comprised to come between the resource control part.Resource control part inside also needs network safety grade information is comprised to come in when exchange message.
Translator unit and/or user terminal/user network part is receiving network safety grade information, when transmitting user data, needs and can carry out corresponding network safety grade to the user data that is transmitted.
As shown in Figure 2, be network safety grade implementation method schematic diagram among the NGN in the embodiment of the invention, the step of network safety grade implementation method is as follows among the NGN:
Step 201: the network insertion control section is preserved the CAMEL-Subscription-Information that the user contracts in user-subscribed database, and CAMEL-Subscription-Information includes network safety grade and/or default network safety grade.
Step 202: resource control part may comprise the network safety grade ability information in network resource status information, the dynamical fashion that this network safety grade can pass through obtains, and also can obtain by the mode of static state.Network safety grade herein is the ability of network reality, and this network safety grade may be higher than, be equal to or less than the network safety grade in the user-subscribed database, does not have specific corresponding relation.
Above-mentioned steps 202 does not have precedence relationship with step 201.
Step 203: resource control part receives resource allocation request from professional control section, translator unit, user terminal/user network part or other resource control part.If network safety grade can be extracted or derive to these parts, then need in resource allocation request, carry network safety grade information.
Step 204: the request of resource control part processing resource allocation in resource allocation decisions and resource reservation process, may need to network insertion control section request user signing contract information.At this moment, the network insertion control section needs to comprise network safety grade information in the user signing contract information of response.
Step 205: resource control part carries out resource allocation decisions and resource reservation process after the response that receives the network insertion control section.
Step 206: judge whether carry network safety grade information in the resource allocation request, carry out step 207, carry out step 208 if carry if do not carry.
Step 207: if in resource allocation request, do not carry network safety grade information, the network safety grade that then uses the network safety grade conduct in the user signing contract information to be asked, this safe class meets security strategy and requires, and proceeds step 210.
Step 208: if in resource allocation request, carried network safety grade information, network safety grade that carries in the then comparative analysis resource allocation request and the network safety grade in the user signing contract information, and make a strategic decision in conjunction with the security strategy rule.
Decision-making has three kinds of results of decision:
The refusal resource allocation request, consult network safety grade, the resource control part suitable network safe class of making a strategic decision out again with user terminal/user network part.
For the situation of consulting network safety grade again with user terminal/user network part, through consulting again, final decision has two kinds of results of decision: refusal resource allocation request, the resource control part suitable network safe class of making a strategic decision out.
Step 209: the resource control part suitable network safe class of making a strategic decision out.
Step 210: resource control part may need according to the network safety grade revision service quality of making a strategic decision out according to the security strategy rule request.
Step 211 resource control part is sought the network safety grade that support is made a strategic decision out, and can realize translator unit and user network resource (functional entity or physical entity) that user terminal/user network inserts; If can search out, then carry out step 213; Otherwise, carry out step 212.
Step 212: if resource control part is sought less than suitable translator unit or user network resource, then need network safety grade to be consulted again with user terminal/user network part, up to the suitable network safe class of making a strategic decision out, and restart resource allocation process; Perhaps directly refuse resource allocation request.
Step 213: resource control part is carrying out need comprising network safety grade information when mutual with translator unit or user terminal/user network; Translator unit or user terminal/user network need and can carry out corresponding network safety grade to the user data that is transmitted when transmitting user data.
Claims (9)
1, network safety grade implementation method in a kind of next generation network is characterized in that, comprising:
When the user registers, at different business, according to the user to service security demand subscription network safe class as CAMEL-Subscription-Information, or adopt default network safety grade as CAMEL-Subscription-Information, leave in the user signing contract information database;
Resource control part receives resource allocation request, carries network safety grade in the described resource allocation request; Described resource control part is to the described CAMEL-Subscription-Information of network insertion control section request, and the network safety grade that described network insertion control section is contracted the user in response sends described resource control part to;
Described resource control part is analyzed the network safety grade that the network safety grade in the described resource allocation request and user contract, and determines final network safety grade;
Described resource control part determine to be supported the logic entity or the physical entity of described final network safety grade;
Translator unit, user terminal or user network part transmit user data according to the described final network safety grade of deciding after receiving described final network safety grade.
2, network safety grade implementation method in the next generation network as claimed in claim 1, it is characterized in that, described resource control part is revised the QoS parameter in the resource allocation request according to described final network safety grade, and carries out resource allocation according to revised QoS parameter.
3, network safety grade implementation method in the next generation network as claimed in claim 1 is characterized in that, described resource control part partly receives described resource allocation request from professional control section, translator unit, user terminal or home network.
4, network safety grade implementation method in the next generation network as claimed in claim 1 is characterized in that, does not carry network safety grade in the described resource allocation request, and then the network safety grade in the user signing contract information is as final network safety grade.
5, network safety grade implementation method in the next generation network as claimed in claim 1, it is characterized in that, described resource control part is when using described final network safety grade, partly carry out alternately with translator unit, user terminal or user network, resource policy is carried out, resource allocation is carried out or when transmitting the result of decision, comprise described final network safety grade.
6, network safety grade implementation method in the next generation network as claimed in claim 1 is characterized in that, described comparative analysis result comprises: the refusal resource allocation request, consult the network safety grade or the final network safety grade of making a strategic decision out again;
When described situation of consulting network safety grade again occurring, through consulting again, final decision result comprises: the refusal resource allocation request or the final network safety grade of making a strategic decision out.
7, network safety grade implementation method in the next generation network as claimed in claim 1 is characterized in that, described network safety grade is according to the unified planning of security strategy rule request, the corresponding one group of security parameter of each grade.
8, network safety grade implementation method in the next generation network as claimed in claim 1, it is characterized in that, described resource control part comprises network safety grade in network resource status information, described network safety grade obtains by dynamical fashion or static mode.
9, network safety grade implementation method in the next generation network as claimed in claim 1 is characterized in that, between the described resource control part during exchange message, during perhaps described resource control part internal exchange message, comprises described final network safety grade.
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| CN101729531B (en) * | 2009-03-16 | 2016-04-13 | 中兴通讯股份有限公司 | Network security policy distribution method, Apparatus and system |
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| WO2006133622A1 (en) * | 2005-06-13 | 2006-12-21 | Huawei Technologies Co., Ltd. | An edge/packet gateway control system and a method for achieving the control by the edge/packet gateway |
| CN101193432B (en) * | 2006-11-21 | 2011-01-05 | 中兴通讯股份有限公司 | Method and system for realizing mobile value-added secure service |
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