# US 12,225,061 B1 · System and method for ephemeral assignment of network slices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,225,061 B1 - Document ID: US12225061B1 - Status: Granted - Kind: B1 - Application number: 18/366,070 - Filed: 2023-08-07 - Published: 2025-02-13 - Granted: 2025-02-11 - Earliest claimed: 2023-08-07 - Assignees: Verizon Patent and Licensing Inc. - Applicants: Verizon Patent and Licensing Inc. - Inventors: Jae Cho; Jeremy Short; Lily Zhu; Paul Kania; Rachel Elizabeth Page - Web page: https://patentgrep.com/patent/US12225061B1 ## CPC - H04L 65/1069: Session establishment or de-establishment - H04L 65/1073: Registration or de-registration - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A device may include a processor. The processor may be configured to: send an enlistment request to a network over a wireless connection, wherein the enlistment request includes an application identifier (ID) corresponding to an application to be enlisted; receive a reply from the network in response to the enlistment request, wherein the reply includes a replacement User Equipment Route Selection Policy (URSP) rule; receive a session request from the application to establish a session; identify, in response to the session request and based on the replacement URSP rule, a network slice on the network; and establish the session between the application and the identified network slice on the network. ## Claims ### Claim 1 A device comprising: a processor to: send an enlistment request to a network over a wireless connection, wherein the enlistment request includes an application identifier (ID) corresponding to an application to be enlisted; receive a reply from the network in response to the enlistment request, wherein the reply includes a replacement User Equipment Route Selection Policy (URSP) rule; receive a session request from the application to establish a session; identify, in response to the session request and based on the replacement URSP rule, a network slice on the network; establish the session between the application and the identified network slice on the network; and restore a database, which is hosted on the device, that includes URSP rules to a state prior to sending the enlistment request to the network, wherein when the processor restores the database, the processor is to: remove the replacement URSP rule from the database; and insert, in the database, a prior URSP rule, if any, that was overwritten by the replacement URSP rule after the processor received the reply from the network. ### Claim 2 (depends on 1) The device of claim 1, wherein the processor is further to: detect that the application has launched as a trigger to send the enlistment request. ### Claim 3 (depends on 1) The device of claim 1, wherein the processor is further to: insert the replacement URSP rule in the database by overwriting the prior URSP rule in the database. ### Claim 4 (depends on 1) The device of claim 1, wherein the session request includes a traffic descriptor that indicates a type of network traffic that the application is to send to the network, and wherein the processor is to: prevent the application from including, in the session request, information that identifies the application. ### Claim 5 (depends on 1) The device of claim 1, wherein the processor is further to: detect that the application is about to end or that the session has terminated; and send a de-enlistment request to the network in response to detecting that the application is about to end or that the session has terminated. ### Claim 6 (depends on 1) The device of claim 1, wherein the enlistment request includes a traffic descriptor, and wherein the reply includes a replacement traffic descriptor. ### Claim 7 A method comprising: sending, by a device, an enlistment request to a network over a wireless connection, wherein the enlistment request includes an application identifier (ID) corresponding to an application to be enlisted; receiving a reply from the network in response to the enlistment request, wherein the reply includes a replacement User Equipment Route Selection Policy (URSP) rule; receiving a session request from the application to establish a session; identifying, in response to the session request and based on the replacement URSP rule, a network slice on the network; establishing the session between the application and the identified network slice on the network; and restoring a database, which is hosted on the device, that includes URSP rules to a state prior to sending the enlistment request to the network, wherein restoring the database to the state prior to sending the enlistment request includes: removing the replacement URSP rule from the database; and inserting, in the database, a prior URSP rule, if any, that was overwritten by the replacement URSP rule after receiving the reply from the network. ### Claim 8 (depends on 7) The method of claim 7, further comprising: detecting that the application has launched as a trigger to send the enlistment request. ### Claim 9 (depends on 7) The method of claim 7, further comprising: inserting the replacement URSP rule in the database by overwriting the prior URSP rule in the database. ### Claim 10 (depends on 7) The method of claim 7, wherein the session request includes a traffic descriptor that indicates a type of network traffic that the application is to send to the network, the method further comprising: preventing the application from including, in the session request, information that identifies the application. ### Claim 11 (depends on 7) The method of claim 7, further comprising: detecting that the application is about to end or that the session has terminated; and sending a de-enlistment request to the network in response to detecting that the application is about to end or that the session has terminated. ### Claim 12 (depends on 7) The method of claim 7, wherein the enlistment request includes a traffic descriptor, and wherein the reply includes a replacement traffic descriptor. ### Claim 13 A non-transitory computer-readable medium comprising processor-executable instructions, which when executed by a processor of included in a device, cause the processor to: send an enlistment request to a network over a wireless connection, wherein the enlistment request includes an application identifier (ID) corresponding to an application to be enlisted; receive a reply from the network in response to the enlistment request, wherein the reply includes a replacement User Equipment Route Selection Policy (URSP) rule; receive a session request from the application to establish a session; identify, in response to the session request and based on the replacement URSP rule, a network slice on the network; establish the session between the application and the identified network slice on the network; and restore a database, which is hosted on the device, that includes URSP rules to a state prior to sending the enlistment request to the network, wherein when the processor restores the database, the processor is to: remove the replacement URSP rule from the database; and insert, in the database, a prior URSP rule, if any, that was overwritten by the replacement URSP rule after the processor received the reply from the network. ### Claim 14 (depends on 13) The non-transitory computer-readable medium of claim 13, wherein the processor is further to: detect that the application has launched as a trigger to send the enlistment request. ### Claim 15 (depends on 13) The non-transitory computer-readable medium of claim 13, wherein the processor is further to: insert the replacement URSP rule in the database by overwriting the prior URSP rule in the database. ### Claim 16 (depends on 13) The non-transitory computer-readable medium of claim 13, wherein the session request includes a traffic descriptor that indicates a type of network traffic that the application is to send to the network, and wherein the processor is to: prevent the application from including, in the session request, information that identifies the application. ### Claim 17 (depends on 13) The non-transitory computer-readable medium of claim 13, wherein the enlistment request includes a traffic descriptor, and wherein the reply includes a replacement traffic descriptor. ### Claim 18 (depends on 1) The device of claim 1, wherein the processor is further to: detect that the application has launched as a trigger to send the enlistment request; and insert the replacement URSP rule in the database by overwriting the prior URSP rule in the database. ### Claim 19 (depends on 7) The method of claim 7, wherein further comprising: detecting that the application has launched as a trigger to send the enlistment request; and inserting the replacement URSP rule in the database by overwriting the prior URSP rule in the database. ### Claim 20 (depends on 13) The non-transitory computer-readable medium of claim 13, wherein the processor is further to: detect that the application has launched as a trigger to send the enlistment request; and insert the replacement URSP rule in the database by overwriting the prior URSP rule in the database.