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US 8,619,626 B2Granted
Method and apparatus for instance identifier based on a unique device identifier
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsSean Kendall Schneyer, Fredrik Lindholm, Alf Heidermark
Life of this patent
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Abstract
A method and apparatus for use in a communications network whereby an Instance Identifier (ID) is created to uniquely identify a device such as a mobile device or User Equipment (UE) in the communications network.
Claims5
A method of providing device identification (DevID) protection in a user equipment of network, comprising the steps of:
- constructing, by a User Equipment (UE), an Instance ID derived from an International Mobile Equipment Identity (IMEI);
- performing a REGISTER request from a UE to a Proxy-Call Session Control Function (P-CSCF);
- forwarding, by the P-CSCF, the request to the Interrogating-C II Session Control Function (I-CSCF);
- making, by the I-CSCF, a request for information related to the Subscriber registration status by sending the private user identity, public user identity and visited domain name to an Home Subscriber Server (HSS);
- returning, by the HSS, the Serving-Call Session Control Function (S-CSCF) required capabilities to the I-CSCF;
- using, by the I-CSCF, the S-CSCF required capabilities information to select a suitable S-CSCF;
- forwarding, by the I-CSCF, the REGISTER request to the selected S-CSCF;
- challenging, by the S-CSCF, the registration request;
- forwarding, by the I-CSCF, the response to the P-CSCF;
- forwarding, by the P-CSCF, the response to the UE;
- resending, by the UE, the REGISTER request with authentication credentials;
- forwarding, by the P-CSCF, the request to the I-CSCF;
- making, by the I-CSCF, a request for information related to the Subscriber registration status by sending the private user identity, public user identity and visited domain name to an HSS;
- returning, by the HSS the S-CSCF required capabilities;
- using, by the I-CSCF, the information about the S-CSCF required capabilities to select a suitable S-CSCF;
- forwarding, by the I-CSCF, the REGISTER request to the selected S-CSCF;
- informing, by the S-CSCF, the HSS that the user has been registered;
- including, upon being requested by the S-CSCF, by the HSS the user profile in the response sent to the S-CSCF;
- constructing, by the S-CSCF acting as registrar, a Globally Routable User Agent (GRUU) based on the Instance ID;
- sending, by the S-CSCF sends a 200 (OK) response, including the GRUU, to the 1CSCF indicating that registration was successful;
- forwarding, by the I-CSCF, the 200 (OK) response to the P-CSCF indicating that registration was successful;
- and
- forwarding, by the P-CSCF, the 200 (OK) response to UE indicating that registration was successful.
20 more elements
A method for use by a device, such as a User Equipment (UE), for registering in an IP Multimedia Subsystem (IMS), towards a registrar, using packet switched access, comprising the steps of:
- creating, by the UE, an Instance identification (ID) using a Uniform Resource Name (URN) format which transports a Type Allocation Code (TAC) and Serial Number (SNR) in clear text;
- sending, by the UE, a REGISTER request to a Proxy-Call Session Control Function (P-CSCF);
- forwarding, by the P-CSCF to an Interrogating CSCF (I-CSCF) the REGISTER request;
- making, by the I-CSCF, a request for information related to the Subscriber registration status by sending the private user identity, public user identity and visited domain name to a Home Subscriber Server (HSS) of the UE;
- returning, by the HSS, the required capabilities;
- using, by the I-CSCF, the required capabilities to select a suitable S-CSCF;
- forwarding by the I-CSCF to the selected S-CSCF, the REGISTER request;
- challenging, by the selected S-CSCF, the registration request;
- if unauthorized, forwarding by the selected I-CSCF, the response to the P-CSCF, the P-CSCF forwarding the response to UE, the UE reseeding the REGISTER request to the P-CSCF with authentication credentials and the P-CSCF forwarding the request to the I-CSCF.
6 more elements
A method for registering, by a network, a device, such as a User Equipment (UE), using circuit switched (CS) access, comprising the steps of:
- CS attaching by a UE to a Mobile Switching Center (MSC) Server;
- performing, by the MSC/Visitor Location Registrar (VLR) to a Home Location Registrar/Home Subscriber Server (HLR/HSS), authentication and location updating;
- CS attach accepting by the MSC to the UE;
- evaluating, by the MSC Server, whether it needs to perform registration with the IP Multimedia Subsystem (IMS), comprising the steps of deriving a home network domain name to perform DNS queries to locate the Interrogating-Call Session Control Function (I-CSCF) in the home network;
- creating, by the MSC Server, an Instance ID using a URN format which transports an Type Allocation Code (TAG) and Serial Number (SNR) in clear text;
- routing a REGISTER request from the MSC Server to the I-CSCF in the home network;
- performing a user registration status query procedure;
- forwarding the REGISTER request from the I-CSCF to a selected Serving-CSCF (S-CSCF);
- informing, by the S-CSCF, of the HSS that the user has been registered;
- constructing a Globally Routable User Agent (UA) URIs (GRUU) by the S-CSCF (acting as the registrar) based on the Instance ID;
- sending, by the S-CSCF to the I-CSCF, a 200 (OK) response indicating that Registration was successful, the 200 (OK) response including the GRUU;
- and
- forwarding, by the I-CSCF, the 200 (OK) response to the MSC Server indicating that Registration was successful.
10 more elements
Dependencies are inferred from the claim text.