# US 2019/0357128 A1 · Managing vplmn configuration updates in the ue due to home plmn configuration changes > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0357128 A1 - Document ID: US20190357128A1 - Status: Published application - Kind: A1 - Application number: 16/417,708 - Filed: 2019-05-21 - Published: 2019-11-21 - Earliest claimed: 2018-05-21 - Assignees: Nokia Technologies Oy - Applicants: Nokia Technologies Oy - Inventors: Alessio CASATI - Web page: https://patentgrep.com/patent/US20190357128A1 ## CPC - H04W 8/18: Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data - H04W 48/18: Selecting a network or a communication service - G06F 9/45558: {Hypervisor-specific management and integration aspects} - H04W 8/02: Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks - H04W 48/16: Discovering, processing access restriction or access information - H04W 60/00: Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration - H04W 60/002: {Registration for requesting network slices} - H04W 76/11: Allocation or use of connection identifiers - G06F 2009/45595: {Network integration; Enabling network access in virtual machine instances} - H04W 60/04: using triggered events - H04W 84/042: {Public Land Mobile systems, e.g. cellular systems} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract Methods and apparatus, including computer program products, are provided for managing configuration updates. In some example embodiment, there may be provided an apparatus including at least one processor and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to at least: receive an indication regarding whether a home network makes a change to a previous configuration information for the apparatus; and delete, when the received indication represents the change, the previous configuration information stored at the apparatus. Related systems, methods, and articles of manufacture are also described. ## Claims ### Claim 1 An apparatus comprising: at least one processor; and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to at least: receive an indication regarding whether a home network makes a change to a first network slice configuration information for the apparatus; and delete, when the received indication represents the change, a second network slice configuration information. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the first network slice configuration information is different from the second network slice configuration information. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the apparatus is further caused to at least: delete, when the received indication represents the change, network slice configuration information, stored at the apparatus, associated with said home network and/or one or more visited networks. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the apparatus is further caused to at least: receive updated network slice configuration information including or together with the indication. ### Claim 5 (depends on 1) The apparatus of claim 1, wherein the deletion of the first network slice configuration information includes deletion of network slice configuration information associated with at least one of the home network or a visited network. ### Claim 6 (depends on 1) The apparatus of claim 1, wherein at least one of the first network slice configuration information or the second network slice configuration information includes at least one network slice identifier. ### Claim 7 (depends on 5) The apparatus of claim 5, wherein the deletion enables the apparatus to obtain updated network slice configuration information for at least the visited network currently serving the apparatus and/or the home network. ### Claim 8 (depends on 1) The apparatus of claim 1, wherein the apparatus is further caused to at least: receive updated network slice configuration information for at least one other visited network to replace the deleted second network slice configuration information, when the indication represents the change associated with the home network is received. ### Claim 9 (depends on 8) The apparatus of claim 8, wherein the apparatus is further configured to at least: wait to perform, after receiving the updated network slice configuration information, a registration to obtain the updated network slice configuration information until an updated user equipment route and access selection policy are received. ### Claim 10 (depends on 5) The apparatus of claim 5, wherein the apparatus is further caused to at least: update network slice configuration information for the visited network, when the indication is received representing the change associated with the home network; and update network slice configuration information for the visited network only, when no indication is received that represents the change associated with the home network. ### Claim 11 (depends on 5) The apparatus of claim 5, wherein the indication represents the home network indicating to the visited network currently serving the user equipment that the change in the home network is to be taken into account in the visited network for configuring the apparatus. ### Claim 12 A method comprising: receiving, at a user equipment, an indication regarding whether a home network makes a change to a first network slice configuration information for the user equipment; and deleting, when the received indication represents the change, a second network slice configuration information. ### Claim 13 (depends on 12) The method of claim 12, wherein the first network slice configuration information is different from the second network slice configuration information. ### Claim 14 (depends on 12) The method of claim 12, wherein deleting comprises deleting, when the received indication represents the change, network slice configuration information, stored at the user equipment, associated with said home network and/or one or more visited networks. ### Claim 15 (depends on 12) The method of claim 12, further comprising: receiving updated network slice configuration information including or together with the indication. ### Claim 16 (depends on 12) The method of claim 12, wherein the deleting of the second network slice configuration information includes deleting of the second network slice configuration information associated with at least one of the home network or a visited network. ### Claim 17 (depends on 12) The method of claim 12, wherein at least one of the first network slice configuration information or the second network slice configuration information includes at least one network slice identifier. ### Claim 18 (depends on 12) The method of claim 12, wherein the deleting enables obtaining updated network slice configuration information for at least the visited network currently serving the user equipment and/or the home network. ### Claim 19 (depends on 18) The method of claim 18, further comprising: receiving updated network slice configuration information for at least one other visited network to replace the deleted second network slice configuration information, when the indication represents the change associated with the home network is received. ### Claim 20 (depends on 19) The method of claim 19, further comprising: waiting to perform, after receiving the updated network slice configuration information, a registration to obtain the updated network slice configuration information until an updated user equipment route and access selection policy are received. ### Claim 21 (depends on 12) The method of claim 12, further comprising: updating said second network slice configuration information for the visited network, when the indication is received representing the change associated with the home network; and updating said second network slice configuration information for the visited network only, when no indication is received that represents the change associated with the home network. ### Claim 22 (depends on 12) The method of claim 12, wherein the indication represents the home network indicating to the visited network currently serving the user equipment that the change in the home network is to be taken into account in the visited network for configuring the user equipment. ### Claim 23 A non-transitory computer readable medium including program code which, when executed, causes operations comprising: receiving, at a user equipment, an indication regarding whether a home network makes a change to a first network slice configuration information for the user equipment; and deleting, when the received indication represents the change, a second network slice configuration information.