CN102088668A - Group-based authentication method of machine type communication (MTC) devices - Google Patents
Group-based authentication method of machine type communication (MTC) devices Download PDFInfo
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Abstract
The invention discloses a group-based authentication method of machine type communication (MTC) devices, which is mainly used for making up the defect of network congestion caused by a large number of the communication devices respectively and independently complete authentication in a home network. The authentication method comprises the following steps: (1) registering a group of the devices on an MTC server, carrying out corresponding group configuration as required, and establishing a group for the group of the devices; (2) acquiring a group authentication vector from an AuC (authentication center) after successful registration and configuration of the devices; (3) after the group authentication vector is acquired, authenticating the devices in the group as a unit; and (4) during the process of normal communication between the group of the devices passing authentication and the service network, actuating an equipment exit process if certain devices need to exit from the group. Compared with the existing authentication method in a 3GPP (the 3rd generation partnership project), the method has the advantages that signaling data generated by authentication between a service network and the home network is optimized, and congestion of a link between the service network and the home network is reduced, thus being applicable to deploying a scene of Internet of Things (IOT) with the MTC devices.
Description
Technical field
The invention belongs to technical field of communication safety and comprising, relate to a kind of authentication method of communication equipment, the equipment low speed of can be applicable to move and position distribution concentrated relatively, the Internet of Things scene of mobile route direction advolution.
Background technology
Internet of Things is called as the information industry tide again after computer, the Internet and mobile radio communication, will bring wide new markets with communicating by letter to IT.Generally speaking, Internet of Things is exactly " network that thing links to each other with thing ", comprises two layers of meaning: at first, the supplier of information and user progressively expand to physical entity from the people, realize communication and information exchange by Internet of Things between the object; Secondly, realize interconnecting between physical entity by various wireless or wired, long distances or short distance communication network, communication and transmission course do not need or only need limited manual intervention.MTC is the abbreviation of " communication of Machine Type (Machine Type Communication) ".Mainly be meant by " communication network " thus transmission information realizes the exchanges data of machine to machine, just realize interconnected, intercommunication between the machine by communication network.Mobile communications network is because its network particularity, end side does not need the manual routing, can provide mobility to support, help saving cost, and can satisfy the communication requirement under hazardous environment, make and serve the extensive concern that has obtained industry as the MTC that carries with mobile communications network.
The communication equipment of Machine Type also needs to authenticate when access service network, a kind of authentication method has been proposed in the 3GPP standard, this method is a group communication devices to be divided in the group go, and require when the communication equipment that is under the jurisdiction of same group during at access service network, each equipment in the group all will use the UMTS-AKA agreement of standard to finish the authentication of once arriving home network, but because the communication equipment quantity that relates under this communication scenes is more, existing method requires each equipment in the group all will carry out once complete authentication when access service network, so, will sharply increase by the signaling data that produced of authentication between service network and home network, thereby cause congested between the link.
Summary of the invention
The objective of the invention is to avoid the defective of above-mentioned prior art, propose a kind of authentication method of the Machine Type communication equipment based on group, with minimizing equipment authenticate when the access service network caused congested between the link.
The technical scheme that realizes the object of the invention is: measured UMTS-AKA agreement and be that the authentication method of unit carries out with the group, and implementation step comprises as follows:
(1) one group of equipment is registered on device server, and carry out corresponding group as required and dispose, for this group equipment is set up a group and is this group devices allocation group identification, and in general packet radio service technological service support node SGSN, set up a list of identities, the interim connection identity PCID of each equipment in the group and International Mobile Equipment Identity sign indicating number IMEI are bound, so that each equipment in the group is discerned;
(2) after registration and group's configuration end, according to the regulation in the 3GPP standard, from the AuC of AUC, obtain a cohort Ciphering Key of group device, in SGSN, set up simultaneously a list of identities, the interim connection identity PCID and the group identification of each equipment in the group are bound, so that the equipment that does not belong to this group is carried out access control;
(3) after the equipment in the group obtains group Ciphering Key from the AuC of AUC, use the UMTS-AKA agreement of 3GPP standard as unit this equipment to be authenticated with group, after authentication is passed through, equipment in this group begins to communicate with service network, otherwise, stop this verification process, and send an authentification failure message to group device;
(4) carrying out in the process of proper communication with service network by the group device of authentication, if some equipment need withdraw from this group, then the interim connection identity PCID of this equipment of deletion and the binding relationship of group identification in the list of identities that need set up in step (2) successfully withdraw from this equipment.
The present invention has following advantage:
1) the present invention need not the communication equipment in the change standard owing to carry out design for scheme according to the standard of 3GPP;
2) the present invention is because its whole authentication process based on the UMTS-AKA authentication protocol of standard, has guaranteed authenticating safety;
3) the present invention can effectively prevent the illegal access of non-group device owing to adopt access control mechanism;
4) authentication method that uses in the present invention and the 3GPP standard is compared, each equipment that is under the jurisdiction of same group is accomplished to the verification process of home network independently of one another in the former method, and being unit and service network with the group, the equipment that is under the jurisdiction of same group among the present invention finishes authentication to home network, optimize between service network and home network the signaling data that is produced by authentication, reduced between them congested on the link.
The present invention can further describe by following execution mode and accompanying drawing thereof.
Description of drawings
Fig. 1 is existing network structure;
Fig. 2 is based on the authentication general flow chart of the Machine Type communication equipment of group among the present invention;
Fig. 3 is the registration and the configuration sub-process figure of group of Machine Type communication equipment among the present invention;
Fig. 4 is that group's Ciphering Key obtains sub-process figure among the present invention;
Fig. 5 is group device authentication sub-process figure among the present invention.
Embodiment
This method adopts the authentication method based on the Machine Type communication equipment of group, and network structure as shown in Figure 1.
With reference to Fig. 2, the present invention is based on the authentication of the Machine Type communication equipment of group, comprise the steps:
Step 1, the registration of Machine Type communication equipment and group's configuration.
As shown in Figure 3, being implemented as follows of this step:
(1.1) when dispatching from the factory, equipment manufacturers are kept at identical permanent key K respectively among the communication equipment MTC Device and the AuC of AUC of Machine Type;
(1.2) when dispatching from the factory, equipment manufacturers are provided for MTC Device group configured strategy respectively on Machine Type communication equipment MTC Device and Machine Type communication equipment server MTC Server, and for this group equipment an identical interim connection identity PCID are set;
(1.3) Machine Type communication equipment MTC Device sends interim connection identity PCID, International Mobile Equipment Identity sign indicating number IMEI, Machine Type device identifier and the group's configuration needs of oneself to SGSN when the needs access service network;
(1.4) after SGSN receives the interim connection identity PCID and International Mobile Equipment Identity sign indicating number IMEI of MTC Device, set up PCID and the IMEI binding of Machine Type communication equipment MTC Device, promptly in SGSN, set up a database, this database comprises interim connection identity PCID and the corresponding International Mobile Equipment Identity sign indicating number IMEI of MTC Device, is used for the identification to each MTC Device of group;
(1.5) the Machine Type device identifier received according to step (1.3) of SGSN is transmitted the equipment of receiving from step (1.3) to Machine Type communication equipment server MTC Server and is connected identity PCID and group's configuration needs temporarily;
(1.6) after MTC Server receives that equipment connects identity PCID and group's configuration needs temporarily, dispose group under this equipment according to Machine Type device identifier and group's configuration needs, distribute and the group identification of this group's correspondence, and group identification is sent to SGSN;
(1.7) after SGSN receives group identification, use the interim identification code TMSI of client of the standard method calculating PCID among the 3GPP, and group identification and TMSI are sent to MTC Device;
(1.8) after MTC Device received the group identification and TMSI that SGSN sends, the registration process of this equipment was finished;
(1.9) registration to miscellaneous equipment in the group is finished in repeating step (1.3)-(1.8).
Step 2, group's the obtaining of Ciphering Key.
As shown in Figure 4, being implemented as follows of this step:
When (2.1) the MTC Device in the group need authenticate, one of them equipment MTC Device1 inserted request to the SGSN transmitting apparatus;
(2.2) SGSN is to MTC Device1 return authentication identity request message;
(2.3) MTC Device1 sends to SGSN with interim identification code TMSI of the client of oneself and group identification;
(2.4) after SGSN receives the TMSI and group identification that MTC Device1 sends, use the method in the 3GPP standard from TMSI, to recover PCID;
(2.5) SGSN sets up a list of identities, the interim connection identity PCID and the group identification of each equipment among the group are bound, promptly in SGSN, set up a database, this database comprises interim connection identity PCID and the corresponding group identification of MTC Device, and this list of identities is used for the access control of MTC Device;
(2.6) SGSN is sent to the AuC of AUC to the PCID that obtains from step (2.4);
(2.7) AuC determines the group that equipment is affiliated after receiving PCID, use the permanent key K that preserves in advance in the step (1.1), generate challenge random number RA ND, authentication token AUTN, authentication challenge XRES, encryption key CK and Integrity Key IK parameter by the canonical algorithm among the 3GPP, by RAND, AUTN, XRES, CK and IK structure group Ciphering Key, make crowd Ciphering Key=RAND|AUTN|XRES|CK|IK then;
(2.8) AuC sends to SGSN with group Ciphering Key=RAND|AUTN|XRES|CK|IK;
(2.9) SGSN preserves a cohort Ciphering Key of receiving from AuC, use one of them to be used for the authentication of MTCDevice1, remaining group's Ciphering Key is used for the authentication of group's miscellaneous equipment, therefore when miscellaneous equipment need authenticate, SGSN did not just need to obtain group Ciphering Key again to AuC again.
Step 3, the authentication of group device.
As shown in Figure 5, being implemented as follows of this step:
(3.1) SGSN challenge random number RA ND that step (2.9) is obtained, authentication token AUTN sends to MTC Device1;
(3.2) MTC Device1 according to 3GPP standard method checking from SGSN send challenge random number RA ND and authentication token AUTN, after checking is passed through, use the canonical algorithm among the 3GPP to calculate user authentication response RES, and RES is sent to SGSN, otherwise, stop authentication this time;
(3.3) SGSN verifies the user authentication response RES that receives according to the 3GPP standard method, if pass through, then the verification process of MTC Device1 is finished, otherwise, stop authentication this time, and send an authentification failure message to MTC Device1;
(3.4) the same step of the verification process of miscellaneous equipment (3.1)-(3.3) in the group, SGSN directly selects group's Ciphering Key of preserving and sends to and need authenticated device in step (2.9), behind equipment success identities all in the group, whole authentication process finishes.
Step 4, equipment withdraws from the group.
When certain the Machine Type communication equipment in the SGSN judgement group need withdraw from this group, the interim connection identity PCID of this equipment in the list of identities that only needs to set up in the deletion step (2.5), so, the PCID of this equipment and the binding relationship of group identification are just cancelled, when the equipment that withdraws from this group also wants to use the interim connection identity PCID of original group to authenticate, SGSN carries out access control earlier to it, in the list of identities that step (2.5) is set up, search the PCID of this equipment and the binding relationship of group identification, if search less than, then do not allow this equipment to authenticate, thereby guaranteed the fail safe of whole system.
The term explanation:
MTC Device: the communication equipment of Machine Type;
MTC Server: the communication equipment server of Machine Type, be used to manage MTC Device, MTC Device is registered;
SGSN: general packet radio service technological service support node, represent accesses network that MTC Device is authenticated;
AuC: AUC, the distribution of Ciphering Key;
PCID: equipment connects identity temporarily;
IMEI: International Mobile Equipment Identity sign indicating number;
TMSI: the interim identification code of client;
K: permanent key;
RAND: challenge random number;
AUTN: authentication token;
XRES: authentication challenge;
CK: encryption key;
IK: Integrity Key.
Claims (7)
1. authentication method based on the Machine Type communication equipment of group comprises:
(1) one group of equipment is registered on device server, and carry out corresponding group as required and dispose, for this group equipment is set up a group and is this group devices allocation group identification, and in general packet radio service technological service support node SGSN, set up a list of identities, the interim connection identity PCID of each equipment in the group and International Mobile Equipment Identity sign indicating number IMEI are bound, so that each equipment in the group is discerned;
(2) after registration and group's configuration end, according to the regulation in the 3GPP standard, from the AuC of AUC, obtain a cohort Ciphering Key of group device, in SGSN, set up simultaneously a list of identities, the interim connection identity PCID and the group identification of each equipment in the group are bound, so that the equipment that does not belong to this group is carried out access control;
(3) after the equipment in the group obtains group Ciphering Key from the AuC of AUC, use the UMTS-AKA agreement of 3GPP standard as unit this equipment to be authenticated with group, after authentication is passed through, equipment in this group begins to communicate with service network, otherwise, stop this verification process, and send an authentification failure message to group device;
(4) carrying out in the process of proper communication with service network by the group device of authentication, if some equipment need withdraw from this group, then the interim connection identity PCID of this equipment of deletion and the binding relationship of group identification in the list of identities that need set up in step (2) successfully withdraw from this equipment.
2. the authentication method of the Machine Type communication equipment based on group according to claim 1, wherein step (1) is described registers one group of equipment on device server, and carries out the configuration of corresponding group as required, carries out as follows:
(2a) when dispatching from the factory, equipment manufacturers are provided for MTC Device group configured strategy respectively on Machine Type communication equipment MTC Device and Machine Type communication equipment server MTC Server, and for this group equipment an identical interim connection identity PCID are set;
(2b) Machine Type communication equipment MTC Device sends interim connection identity PCID, International Mobile Equipment Identity sign indicating number IMEI, Machine Type device identifier and the group's configuration needs of oneself to SGSN when the needs access service network;
After (2c) SGSN receives the interim connection identity PCID and International Mobile Equipment Identity sign indicating number IMEI of MTC Device, set up PCID and the IMEI binding of Machine Type communication equipment MTC Device;
(2d) the Machine Type device identifier received according to step (2b) of SGSN is transmitted the equipment of receiving from step (2b) to Machine Type communication equipment server MTC Server and is connected identity PCID and group's configuration needs temporarily;
After (2e) MTC Server receives that equipment connects identity PCID and group's configuration needs temporarily, dispose group under this equipment according to Machine Type device identifier and group's configuration needs, distribute and the group identification of this group's correspondence, and group identification is sent to SGSN;
After (2f) SGSN receives group identification, use the interim identification code TMSI of client of the standard method calculating PCID among the 3GPP, and group identification and TMSI are sent to MTC Device;
After (2g) MTC Device received the group identification and TMSI that SGSN sends, the registration process of this equipment was finished;
(2h) repeating step (2b)-(2g) is finished the registration to miscellaneous equipment in the group.
3. the authentication method of the Machine Type communication equipment based on group according to claim 2, wherein step (2c) is described sets up the PCID of Machine Type communication equipment MTC Device and the binding of IMEI, be in SGSN, to set up a database, this database comprises interim connection identity PCID and the corresponding International Mobile Equipment Identity sign indicating number IMEI of MTC Device, is used for the identification of each MTC Device of group.
4. the authentication method of the Machine Type communication equipment based on group according to claim 1, the described cohort Ciphering Key that obtains group device from the AuC of AUC of step (2) wherein, carry out as follows:
(4a) Machine Type communication equipment MTC Device sends to SGSN with interim identification code TMSI of the client of oneself and group identification;
After (4b) SGSN receives the TMSI and group identification that MTC Device sends, at first use the method in the 3GPP standard from TMSI, to recover PCID, and set up a list of identities, the interim connection identity PCID and the group identification of each equipment among the group are bound, and this list of identities is used for the access control of MTC Device;
(4c) SGSN is sent to the AuC of AUC to the PCID that obtains from step (4b);
(4d) AuC determines the group that equipment is affiliated after receiving PCID, and sends corresponding group's Ciphering Key to SGSN;
(4e) SGSN receives group's Ciphering Key that the AuC of AUC sends.
5. the authentication method of the Machine Type communication equipment based on group according to claim 4, wherein described interim connection identity PCID and the group identification each equipment among the group of step (4b) bound, be to set up a database in SGSN, this database comprises interim connection identity PCID and the corresponding group identification of MTC Device.
6. the authentication method of the Machine Type communication equipment based on group according to claim 4, wherein the related group's Ciphering Key of step (4d) is to generate challenge random number RA ND, authentication token AUTN, authentication challenge XRES, encryption key CK and Integrity Key IK parameter by the canonical algorithm among the 3GPP earlier: constitute this group Ciphering Key by RAND, AUTN, XRES, CK and IK then.
7. the authentication method of the Machine Type communication equipment based on group according to claim 1, wherein the UMTS-AKA agreement of the described 3GPP of the use standard of step (3) authenticates this equipment as unit with group, carries out as follows:
(7a) the SGSN challenge random number RA ND that will obtain from the AuC of AUC, authentication token AUTN sends to MTC Device;
(7b) MTC Device verifies challenge random number RA ND and the authentication token AUTN that sends from SGSN according to the 3GPP standard method, after checking is passed through, use the canonical algorithm among the 3GPP to calculate user authentication response RES, and RES is sent to SGSN, otherwise, stop authentication this time;
(7c) SGSN verifies the user authentication response RES that sends from MTC Device according to the 3GPP standard method, and if the verification passes, then verification process is finished, otherwise, stop authentication this time, and send an authentification failure message to group device.
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