# US 2013/0160093 A1 · Method and network entity for registering a user entity with a communication network via another communication network > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0160093 A1 - Document ID: US20130160093A1 - Status: Published application - Kind: A1 - Application number: 13/816,604 - Filed: 2011-08-10 - Published: 2013-06-20 - Earliest claimed: 2010-08-12 - Assignees: Deutsche Telekom AG - Inventors: Andreas Klein - Web page: https://patentgrep.com/patent/US20130160093A1 ## CPC - H04L 63/18: {using different networks or channels, e.g. using out of band channels (cryptographic mechanisms or cryptographic arrangements for key distribution involving distinctive intermediate devices or communication paths H04L9/0827; cryptographic mechanisms or cryptographic arrangements for authentication using a plurality of channels H04L9/3215)} - G06F 21/31: User authentication - H04W 12/0471: Key exchange - H04W 12/08: Access security - H04W 80/10: adapted for {application} session management, e.g. SIP [Session Initiation Protocol] {(connection management H04W76/00; arrangements for session management H04L67/14)} - H04W 84/12: WLAN [Wireless Local Area Networks] - H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A network entity for registering a user entity with a first communication network, wherein the user entity and the network entity providing access to the first communication network are registered with a second communication network. The network entity has a transceiver for transferring at least one registration message for registering said user entity with the first communication network between the user entity and the network entity over the second communication network. ## Claims ### Claim 1 A method for registering a user entity with a first communication network, wherein the user entity and an access entity providing access to the first communication network are registered with a second communication network, the method comprising: transferring at least one registration message for registering said user entity) with the first communication network between the user entity and the access entity over the second communication network. ### Claim 2 (depends on 1) The method of claim 1, wherein the at least one registration message is transferred by means of the Session Initiation Protocol. ### Claim 3 (depends on 1) The method of claim 1, wherein a request requesting at least one key for accessing the first communication network is transferred from the user entity to the access entity over the second communication network. ### Claim 4 (depends on 3) The method of claim 3, wherein the request is transferred in a Session Initiation Protocol subscribe request. ### Claim 5 (depends on 3) The method of claim 3, wherein a response is transferred from the access entity to the user entity over the second communication network, if the transferred request meets an adjustable authorization rule for accessing said first communication network said response including the at least one requested key for accessing the first communication network. ### Claim 6 (depends on 5) The method of claim 5, wherein the response is transferred in a Session Initiation Protocol response, in particular in a Session Initiation Protocol Notify message. ### Claim 7 (depends on 5) The method of claim 5, wherein the authorization rule is adjusted in dependence on a command of a user of the access entity. ### Claim 8 (depends on 1) The method of claim 1, wherein an invitation message is transferred from the access entity to the user entity over the second communication network, said invitation message inviting the user entity to access the first communication network and including a public identification of the access entity, wherein, in response to receiving the invitation message, a request is transferred from the user entity to the access entity over the second communication network, the request using the transferred public identification of the access entity and requesting at least one key for accessing the first communication network. ### Claim 9 (depends on 1) The method of one of claim 1, wherein an invitation message is transferred from the access entity to the user entity over an open link of the first communication network, said invitation message inviting the user entity to access the first communication network and including a public identification of the access entity, wherein, in response to receiving the invitation message, a request is transferred from the user entity to the access entity over the second communication network, the request using the transferred public identification of the access entity and requesting at least one key for accessing the first communication network. ### Claim 10 (depends on 8) The method of claim 8, wherein the invitation message is broadcast by the access entity. ### Claim 11 (depends on 1) The method of claim 1, wherein the at least one key has a certain validity, in particular a certain temporary validity or a certain validity on data volume. ### Claim 12 (depends on 1) The method of claim 1, wherein the first communication network is a Wireless Local Area Network. ### Claim 13 (depends on 1) The method of claim 1, wherein the second communication network is a mobile communication network, in particular an IP multimedia subsystem. ### Claim 14 (depends on 1) The computer program comprising a program code for executing the method of claim 1. ### Claim 15 A network entity for registering a user entity with a first communication network, wherein the user entity and the network entity providing access to the first communication network are registered with a second communication network, the network entity comprising: a transceiver for transferring at least one registration message for registering said user entity with the first communication network between the user entity and the network entity over the second communication network.