# US 10,873,669 B2 · Service differentiation for devices connected to a UE as a router > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,873,669 B2 - Document ID: US10873669B2 - Status: Granted - Kind: B2 - Application number: 16/347,754 - Filed: 2017-11-01 - Published: 2019-09-19 - Granted: 2020-12-22 - Earliest claimed: 2016-11-07 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget LM Ericsson (publ) - Inventors: Juying Gan; Susana Fernandez Alonso; Hui Yang; Jinyin Zhu - Web page: https://patentgrep.com/patent/US10873669B2 ## CPC - H04M 15/66: {Policy and charging system} - H04L 12/1407: {Policy-and-charging control [PCC] architecture} - H04L 45/74: Address processing for routing - H04L 61/5007: Internet protocol [IP] addresses - H04M 15/57: {for integrated multimedia messaging subsystem [IMS]} - H04M 15/63: {based on the content carried by the session initiation protocol [SIP] messages} - H04W 76/12: Setup of transport tunnels - H04W 76/14: Direct-mode setup - H04W 88/04: adapted for relaying to or from another terminal or user - H04L 2101/659: Internet protocol version 6 [IPv6] addresses - H04W 76/15: Setup of multiple wireless link connections - H04W 92/24: between backbone network devices - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract The embodiments herein relate to a method in a PCRF (108) for achieving service differentiation for a second UE (103) attached to a first UE (101) acting as a mobile router. The PCRF (108) receives, from a further node (107), a request for establishing a PDN connection for the first UE (101). The request comprises routing information of the first UE (101). The PCRF (108) receives, from an AF (140), a request for resource reservation for a service based on a request from the second UE (103). The request comprises an IP address of the second UE (103). The PCRF (108) correlates the routing information of the first UE (101) with the IP address of the second UE (103). ## Claims ### Claim 1 A method in a Policy and Charging Rules Function, PCRF, for achieving service differentiation for a second User Equipment, UE, attached to a first UE acting as a mobile router, the method comprising: receiving, from a further node, a request for establishing a Packet Data Network, PDN, connection for the first UE, the request comprising routing information of the first UE; receiving, from an Application Function, AF, a request for resource reservation for a service based on a request from the second UE, the request comprising an Internet Protocol, IP, address of the second UE; and correlating the routing information of the first UE with the IP address of the second UE. ### Claim 2 (depends on 1) The method of claim 1, wherein the routing information comprises an IP address and a framed route of the first UE, and wherein the correlating further comprises: correlating the framed route of the first UE with the IP address of the second UE. ### Claim 3 (depends on 1) The method claim 1, further comprising: sending a resource reservation request to a Packet Data network Gateway/General Packet Radio Service Gateway Serving Node, PGW/GGSN, over a Gx interface, wherein the resource reservation request comprises the correlation of the routing information of the first UE with the IP address of the second UE. ### Claim 4 (depends on 3) The method of claim 3, wherein the resource reservation request is a re-authorization request to the PGW/GGSN for a service requested from the AF. ### Claim 5 (depends on 1) The method of claim 1, wherein the correlating further comprises: obtaining a Gx session corresponding to the routing information of the first UE. ### Claim 6 (depends on 1) The method of claim 1, wherein the correlating further comprises: indicating the IP address of the second UE in the routing information of the first UE. ### Claim 7 (depends on 1) The method of claim 1, further comprising: performing Gx-Rx session binding. ### Claim 8 (depends on 1) The method of claim 1, wherein the further node is a Packet Data Network Gateway/General Packet Radio Service Gateway Serving Node, PGW/GGSN. ### Claim 9 (depends on 1) The method of claim 1, wherein the further node is a Subscription Profile Repository/User Data Repository, SPR/UDR. ### Claim 10 (depends on 1) The method of claim 1, wherein the routing information of the first UE comprises routing information to be configured for the first UE on a Network Access Server, NAS. ### Claim 11 (depends on 1) The method of claim 1, wherein the routing information of the first UE comprises a framed route or a framed Ipv6 route. ### Claim 12 (depends on 11) The method of claim 11, wherein the framed route or framed IPv6 route is received from a radius server. ### Claim 13 A Policy and charging rules function, PCRF, for achieving service differentiation for a second User Equipment, UE, attached to a first UE acting as a mobile router, the PCRF being configured to: receive from a further node a request for establishing a Packet Data Network, PDN, connection for the first UE, the request comprising routing information of the first UE; receive from an Application Function, AF, a request for resource reservation for a service based on a request from the second UE, the request comprising an Internet Protocol, IP, address of the second UE; and to correlate the routing information of the first UE with the IP address of the second UE. ### Claim 14 (depends on 13) The PCRF of claim 13, wherein the routing information comprises an IP address and a framed route of the first UE, and wherein the PCRF is configured to: correlate the framed route of the first UE with the IP address of the second UE. ### Claim 15 A method in a Packet Data Network Gateway/General Packet Radio Service Gateway Serving Node, PGW/GGSN, for achieving service differentiation for a second User Equipment, UE, attached to a first UE acting as mobile router, the method comprising: receiving a resource reservation request from a Policy and Charging Rules Function, PCRF, for a service requested from an Application Function, AF, the resource reservation request comprising correlated routing information of the first UE with an Internet Protocol, IP, address of the second UE; and creating or updating a dedicated bearer for the service requested from the AF. ### Claim 16 (depends on 15) The method of claim 15, wherein the resource reservation request is a re-authorization request to the PGW/GGSN for a service requested from the AF. ### Claim 17 (depends on 15) The method of claim 15, wherein the resource reservation request is received from the PCRF over a Gx interface. ### Claim 18 (depends on 15) The method of claim 15, wherein the correlated routing information further comprises information indicating the IP address of the second UE in the routing information of the first UE. ### Claim 19 (depends on 15) The method of claim 15, wherein the routing information of the first UE comprises routing information to be configured for the first UE on a Network Access Server, NAS. ### Claim 20 (depends on 15) The method of claim 15, wherein the routing information of the first UE comprises a framed route or a framed IPv6 route. ### Claim 21 (depends on 20) The method of claim 20, wherein the framed route and framed IPv6 route is received from a radius server). ### Claim 22 (depends on 15) The method of claim 15, further comprising: performing routing for downlink traffic based on the IP address of the second UE. ### Claim 23 A Packet Data Network Gateway/General Packet Radio Service Gateway Serving Node, PGW/GGSN, for achieving service differentiation for a second User Equipment, UE, attached to a first UE acting as a mobile router, the PGW/GGSN being configured to: receive a resource reservation request from a Policy and Charging Rules Function, PCRF, for a service requested from an Application Function, AF, the resource reservation request comprising correlated routing information of the first UE with an Internet Protocol, IP, address of a second UE; and to create or update a dedicated bearer for the service requested from the AF via PCRF. ### Claim 24 (depends on 23) The PGW/GGSN of claim 23, wherein the resource reservation request is a re-authorization request to the PGW/GGSN for a service requested from the AF. ### Claim 25 (depends on 1) A computer program product comprising a non-transitory computer readable medium storing instructions which, when executed on at least one processor, cause the at least one processor to carry out the method of claim 1. ### Claim 26 (depends on 15) A computer program product comprising a non-transitory computer readable medium storing instructions which, when executed on at least one processor, cause the at least one processor to carry out the method of claim 15.