# US 2018/0324647 A1 · Handover from wifi to mobile network > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0324647 A1 - Document ID: US20180324647A1 - Status: Published application - Kind: A1 - Application number: 15/768,063 - Filed: 2016-10-12 - Published: 2018-11-08 - Earliest claimed: 2015-10-16 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget LM Ericsson (publ) - Inventors: Sven GEMSKI; Matthias NOLLE - Web page: https://patentgrep.com/patent/US20180324647A1 ## CPC - H04W 36/144: {over a different radio air interface technology} - H04W 36/00226: {wherein the core network technologies comprise IP multimedia system [IMS], e.g. single radio voice call continuity [SRVCC]} - H04W 84/042: {Public Land Mobile systems, e.g. cellular systems} - H04W 84/12: WLAN [Wireless Local Area Networks] - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract The invention relates to a method for handling a handover of a call at a mobile entity from a WiFi network to a mobile communications network, comprising the following steps. A connection request is transmitted to a radio access network of the mobile communications network, the connection request comprising a first indicator indicating that the connection request is for a handover of an ongoing call currently handled by the WiFi network. A service request is transmitted to set up a connection to a call control node of the mobile communications network, the service request comprising a second indicator indicating that the service request is for the ongoing call currently handled by the WiFi network. ## Claims ### Claim 1 A method for handling a handover of a call at a mobile entity between different types of radio access networks comprising from a WiFi network to a 3GPP mobile communications network, the method comprising: transmitting a connection request to a radio access network of a second type comprising the 3GPP mobile communications network, the connection request comprising a first indicator indicating that the connection request is for a handover of an ongoing call currently handled by a first type of radio access comprising the WiFi network, transmitting a service request to set up a connection to a call control node of the network of the second type comprising the 3GPP mobile communications network, the service request comprising a second indicator indicating that the service request is for the ongoing call currently handled by the network of the first type comprising the WiFi network. ### Claim 2 (depends on 1) The method according to claim 1, wherein the first and the second indicator indicate that the request is a Dual Radio Voice Call Continuity, DRVCC handover. ### Claim 3 (depends on 1) The method according to claim 1, wherein the connection request is a radio resource control connection request. ### Claim 4 (depends on 1) The method according to claim 1, wherein the service request is a connection management service request. ### Claim 5 A mobile entity configured to handle a handover of a call at a mobile entity between different types of radio access networks comprising from a WiFi network to a 3GPP mobile communications network, the mobile entity comprising: an interface configured to transmit a connection request to a radio access network of a second type comprising the 3GPP mobile communications network, the connection request comprising a first indicator indicating that the connection request is for a handover of an ongoing call currently handled by a radio network of a first type comprising the WiFi network, transmit a service request to a call control node of the network of the second type comprising the 3GPP mobile communications network, the service request comprising a second indicator indicating that the connection request is for the ongoing call currently handled by the first type of radio network. ### Claim 6 A method for operating a call control node of a mobile communications network comprising a 3GPP mobile communications network, the method comprising: receiving a service request from a mobile entity to set up a connection, the service request comprising an indicator indicating that the connection request is for an ongoing call currently handled by a different type of radio access network comprising a WiFi network, prioritizing the call handling of the ongoing call of the mobile entity in the call control node with a higher priority level than a default priority level assigned for a mobile originating or mobile terminating call. ### Claim 7 (depends on 6) The method according to claim 6, further informing an IP multimedia subsystem in response to the received service request that the ongoing call for said mobile entity should be handled with a higher priority level than the default priority level used in the IP multimedia subsystem for calls. ### Claim 8 (depends on 6) The method according to claim 6, wherein the indicator indicates that the call is a Dual Radio Voice Call Continuity, DRVCC handover. ### Claim 9 (depends on 6) The method according to claim 6, further comprising informing a radio access network of the mobile communications network in response to the received service request that the call for said mobile entity should be handled with a higher priority level than a default priority level assigned for a mobile originating or mobile terminating call. ### Claim 10 (depends on 6) The method according to claim 6, further comprising informing a media gateway in response to the received service request that the call of said mobile entity should be handled with a higher priority level than a default priority level. ### Claim 11 A Call control node of a mobile communications network comprising a 3GPP mobile communications network, the call control node comprising: an interface configured to receive a service request from a mobile entity to set up a connection, the service request comprising an indicator indicating that the connection request is for an ongoing call currently handled by a different type of radio access network comprising a WiFi network, at least one processing unit configured to prioritize the call handling of the ongoing call of the mobile entity with a higher priority level than a default priority level in the processing in the call control node. ### Claim 12 (depends on 11) The call control node according to claim 11, wherein the interface is configured to informing a radio access network of the mobile communications network in response to the received service request that the call for said mobile entity should be handled with a higher priority level than a default priority level assigned for a mobile originating or mobile terminating call. ### Claim 13 (depends on 11) The call control node according to claim 11, wherein the interface is configured to inform an IP multimedia subsystem in response to the received service request that the call for said mobile entity should be handled with a higher priority level than a default priority level assigned to calls. ### Claim 14 (depends on 11) The call control node according to claim 11, wherein the interface is configured to inform a radio access network of the mobile communications network in response to the received service request that the call for said mobile entity should be handled with a higher priority level than a default priority level assigned for a mobile originating or mobile terminating call. ### Claim 15 (depends on 11) The call control node according to claim 11, wherein the interface is configured to inform a media gateway in response to the received service request that the call of said mobile entity should be handled with a higher priority level than a default priority level assigned to calls. ### Claim 16 A method for operating a node configured to allocate radio resources in a radio access network of a mobile communications network comprising a 3GPP mobile communications network, the node comprising: receiving a connection request from a mobile entity comprising an indicator indicating that the connection request is for a handover of an ongoing call currently handled by a different type of radio access network comprising a WiFi network, allocating radio resources to the mobile entity with a higher priority level than a default priority level allocated to a terminating or originating call. ### Claim 17 A node configured to allocate radio resources in a radio access network of a mobile communications network comprising a 3GPP mobile communications network, the node comprising an interface configured to receive a connection request from a mobile entity, the connection request comprising an indicator indicating that the connection request is for a handover of an ongoing call currently handled by a different type of radio access network comprising a WiFi network, at least one processing unit configured to allocate radio resources to the mobile entity with a higher priority level than a default priority level allocated to a terminating or originating call. ### Claim 18 (canceled) ### Claim 19 (canceled) ### Claim 20 (canceled) ### Claim 21 (canceled) ### Claim 22 (depends on 1) A computer program comprising a non-transitory computer readable medium storing program code to be executed by at least one processor of a mobile entity, wherein execution of the program code causes the at least one processor to execute a method according to claim 1. ### Claim 23 (canceled) ### Claim 24 (depends on 6) A computer program comprising a non-transitory computer readable medium storing program code to be executed by at least one processor of a call control node, wherein execution of the program code causes the at least one processor to execute a method according to claim 6. ### Claim 25 (depends on 16) A computer program comprising a non-transitory computer readable medium storing program code to be executed by at least one processor of a node of a radio access network, wherein execution of the program code causes the at least one processor to execute a method according to claim 16.