# US 12,004,246 B2 · Method and wireless device for handling communications using dual SIMs > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,004,246 B2 - Document ID: US12004246B2 - Status: Granted - Kind: B2 - Application number: 17/415,750 - Filed: 2018-12-18 - Published: 2022-03-17 - Granted: 2024-06-04 - Earliest claimed: 2018-12-18 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget LM Ericsson (publ) - Inventors: Håkan Österlund; Henrik Johansson - Web page: https://patentgrep.com/patent/US12004246B2 ## CPC - H04W 76/15: Setup of multiple wireless link connections - H04W 8/183: {Processing at user equipment or user record carrier} - H04W 68/005: {Transmission of information for alerting of incoming communication} - H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A method and a wireless device having a first Subscriber Identity Module (SIM) of a first subscription and a second SIM of a second subscription, for handling communications. The device establishes an internet connection with the second subscription when the first SIM and the first subscription are active in an ongoing communication. A notification is then received by the device over said internet connection indicating that an incoming communication directed to the second SIM has been received by the second subscription. Thereby, a user of the device is made aware of the incoming communication without requiring a forwarding function from the second subscription to the first subscription. ## Claims ### Claim 1 A method performed by a wireless device having a first Subscriber Identity Module (SIM) associated with a first subscription and a second SIM associated with a second subscription, for handling communications using the first SIM and the second SIM, the method comprising: establishing an access connection for the wireless device to the first subscription by use of the first SIM, wherein the second SIM is inactive while the first SIM is active; establishing an internet connection between the wireless device and the second subscription by use of the first SIM, while the first SIM is active in an ongoing communication; and receiving, by the wireless device via use of the first SIM which is active, a notification over the internet connection from the second subscription indicating that an incoming communication directed to the second SIM has been received by the second subscription. ### Claim 2 (depends on 1) The method according to claim 1, further comprising sending a response message to the second subscription over the internet connection, the response message indicating whether the incoming communication is accepted or rejected. ### Claim 3 (depends on 2) The method according to claim 2, wherein when the response message is an accept message the ongoing communication is terminated via the first SIM and the incoming communication is received via the second SIM. ### Claim 4 (depends on 1) The method according to claim 1, wherein the internet connection is established via the first SIM over the access connection used in the ongoing communication or over a connection not used in the ongoing communication. ### Claim 5 (depends on 1) The method according to claim 1, wherein the wireless device communicates over the internet connection using a Session Initiation Protocol (SIP) or a HTTP/rest protocol. ### Claim 6 (depends on 5) The method according to claim 5, wherein the establishing the internet connection includes sending a SIP REGISTER message to the second subscription. ### Claim 7 (depends on 6) The method according to claim 6, wherein the SIP REGISTER message subscribes for communication events directed to the second SIM via the second subscription. ### Claim 8 (depends on 1) The method according to claim 1, wherein the internet connection comprises an Internet Control Channel (ICC). ### Claim 9 (depends on 1) The method according to claim 1, wherein the notification comprises a Call Waiting in Standby Subscription (CWSS) message. ### Claim 10 (depends on 1) The method according to claim 1, wherein the establishing the internet connection is triggered when the ongoing communication is established. ### Claim 11 A wireless device having a first Subscriber Identity Module (SIM) associated with a first subscription and a second SIM associated with a second subscription, to handle communications using the first SIM and the second SIM, wherein the wireless device is to: establish an access connection for the wireless device to the first subscription by use of the first SIM, wherein the second SIM is inactive while the first SIM is active; establish an internet connection between the wireless device and the second subscription by use of the first SIM, while the first SIM is active in an ongoing communication; and receive, by the wireless device via use of the SIM which is active, a notification over the internet connection from the second subscription indicating that an incoming communication directed to the second SIM has been received by the second subscription. ### Claim 12 (depends on 11) The wireless device according to claim 11, wherein the wireless device is further to send a response message to the second subscription over the internet connection, the response message indicating whether the incoming communication is accepted or rejected. ### Claim 13 (depends on 12) The wireless device according to claim 12, wherein when the response message is an accept message, the wireless device to terminate the ongoing communication via the first SIM and receive the incoming communication via the second SIM. ### Claim 14 (depends on 11) The wireless device according to claim 11, wherein the wireless device to establish the internet connection via the first SIM over the access connection used in the ongoing communication or over a connection not used in the ongoing communication. ### Claim 15 (depends on 11) The wireless device according to claim 11, wherein the wireless device to communicate over the internet connection using a Session Initiation Protocol (SIP) or a HTTP/rest protocol. ### Claim 16 (depends on 15) The wireless device according to claim 15, wherein the wireless device to establish the internet connection by sending a SIP REGISTER message to the second subscription. ### Claim 17 (depends on 16) The wireless device according to claim 16, wherein the SIP REGISTER message subscribes for communication events directed to the second SIM via the second subscription. ### Claim 18 (depends on 11) The wireless device according to claim 11, wherein the internet connection comprises an Internet Control Channel (ICC). ### Claim 19 (depends on 11) The wireless device according to claim 11, wherein the notification comprises a Call Waiting in Standby Subscription (CWSS) message. ### Claim 20 (depends on 11) The wireless device according to claim 11, wherein the wireless device to establish the internet connection is triggered when the ongoing communication is established. ### Claim 21 A non-transitory computer-readable storage medium comprising instructions which, when executed on at least one processor, cause a wireless device, having a first Subscriber Identity Module (SIM) associated with a first subscription and a second SIM associated with a second subscription, to handle communications using the first SIM and the second SIM by performing operations comprising: establishing an access connection for the wireless device to the first subscription by use of the first SIM, wherein the second SIM is inactive while the first SIM is active; establishing an internet connection between the wireless device and the second subscription by use of the first SIM, while the first SIM is active in an ongoing communication; and receiving, by the wireless device via use of the first SIM which is active, a notification over the internet connection from the second subscription indicating that an incoming communication directed to the second SIM has been received by the second subscription. ### Claim 22 (depends on 21) The non-transitory computer-readable storage medium according to claim 21, wherein the operations further comprising sending a response message to the second subscription over the internet connection, the response message indicating whether the incoming communication is accepted or rejected. ### Claim 23 (depends on 22) The non-transitory computer-readable storage medium according to claim 22, wherein when the response message is an accept message the ongoing communication is terminated via the first SIM and the incoming communication is received via the second SIM. ### Claim 24 (depends on 21) The non-transitory computer-readable storage medium according to claim 21, wherein the operations for establishing the internet connection includes using a Session Initiation Protocol (SIP) and sending a SIP REGISTER message to the second subscription. ### Claim 25 (depends on 24) The non-transitory computer-readable storage medium according to claim 24, wherein the SIP REGISTER message subscribes for communication events directed to the second SIM via the second subscription. ### Claim 26 (depends on 21) The non-transitory computer-readable storage medium according to claim 21, wherein the notification comprises a Call Waiting in Standby Subscription (CWSS) message.