# US 8,787,316 B2 · Mechanism for 3rd generation partnership project multiple inter-network quality of service continuity > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,787,316 B2 - Document ID: US8787316B2 - Status: Granted - Kind: B2 - Application number: 13/336,798 - Filed: 2011-12-23 - Published: 2012-06-28 - Granted: 2014-07-22 - Earliest claimed: 2008-06-18 - Assignees: BlackBerry Limited - Applicants: Xiaoming Zhao; Wei Wu - Inventors: Xiaoming Zhao; Wei Wu - Web page: https://patentgrep.com/patent/US8787316B2 ## CPC - H04W 28/22: Negotiating communication rate - H04W 36/0044: {of quality context information} - H04W 36/1443: {between licensed networks} - H04W 36/304: {due to measured or perceived resources with higher communication quality} - H04W 36/00: Hand-off or reselection arrangements - H04W 36/0033: {with transfer of context information} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A system to promote connectivity for inter-radio access technology (RAT) handover from a first radio access network (RAN) to a second radio access network (RAN) is provided. The system comprises a component configured such that for each access point name (APN) in communication with the first radio access network (RAN), the maximum bit rate (MBR) for each active non-guaranteed bit rate (non-GBR) bearer in the second radio access network (RAN) is determined based on each respective access point name's (APN's) used aggregate maximum bit rate (AMBR) and the number of active non-guaranteed bit rate(s) (non-GBR) bearers for the respective access point name (APN). ## Claims ### Claim 1 A method for quality of service (QoS) parameters mapping during a handover from a first radio access network (RAN) to a second RAN, the first RAN and the second RAN having communication with one or more access point names (APNs), comprising: deriving, for the second RAN, an APN aggregated maximum bit rate (APN-AMBR) for each of the one or more APNs based on a maximum bit rate (MBR) of one or more packet data protocol (PDP) contexts of the first RAN, the first RAN including one of a universal terrestrial radio access network (UTRAN) or a global system for mobiles (GSM) enhanced data for GSM evolution radio access network (GERAN) and the second RAN including an evolved universal terrestrial radio access network (E-UTRAN). ### Claim 2 (depends on 1) The method of claim 1, further comprising providing a local user equipment (UE) aggregated maximum bit rate (UE-AMBR) until a subscribed UE-AMBR is available for the UE. ### Claim 3 (depends on 2) The method of claim 2, further comprising: acquiring the subscribed UE-AMBR; calculating a derived UE-AMBR; and comparing the derived UE-AMBR to the local UE-AMBR. ### Claim 4 (depends on 3) The method of claim 3, wherein calculating a derived UE-AMBR comprises taking the minimum of the subscribed UE-AMBR and the sum of the derived APN-AMBRs of the one or more APNs associated with the UE. ### Claim 5 (depends on 2) The method of claim 2, wherein the local UE-AMBR is based on a sum of the one or more derived APN-AMBR. ### Claim 6 (depends on 3) The method of claim 3 further comprising notifying the derived UE-AMBR to the second RAN by initiating a subscribed quality of service (QoS) modification procedure. ### Claim 7 (depends on 6) The method of claim 6, wherein the notification of the derived UE-AMBR is a first notification and the subscribed QoS modification procedure further provides a second notification of a subscribed APN-AMBR, and wherein the first notification is provided to an enhanced node-B (eNB) of the second RAN and the second notification is provided to a serving gateway and packet data network gateway. ### Claim 8 (depends on 6) The method of claim 6, wherein the subscribed QoS modification procedure is initiated if the local UE-AMBR is different from the derived UE-AMBR. ### Claim 9 A device configured to provide quality of service (QoS) parameters mapping during a handover from a first radio access network (RAN) to a second RAN, the first RAN and the second RAN having communication with one or more access point names (APNs), the device comprising: one or more hardware processors configured to: derive, for the second RAN, an APN aggregated maximum bit rate (APN-AMBR) for each of the one or more APNs based on a maximum bit rate (MBR) of one or more packet data protocol (PDP) contexts of the first RAN, the first RAN including one of a universal terrestrial radio access network (UTRAN) or a global system for mobiles (GSM) enhanced data for GSM evolution radio access network (GERAN) and the second RAN including an evolved universal terrestrial radio access network (E-UTRAN). ### Claim 10 (depends on 9) The device of claim 9, wherein the one or more hardware processors are further configured to provide a local user equipment (UE) aggregated maximum bit rate (UE-AMBR) until a subscribed UE-AMBR is available for the UE. ### Claim 11 (depends on 10) The device of claim 10, wherein the one or more hardware processors are further configured to: acquire the subscribed UE-AMBR; calculate a derived UE-AMBR; and compare the derived UE-AMBR to the local UE-AMBR. ### Claim 12 (depends on 11) The device of claim 11, wherein calculating a derived UE-AMBR comprises taking the minimum of the subscribed UE-AMBR and the sum of the derived APN-AMBRs of the one or more APNs associated with the UE. ### Claim 13 (depends on 10) The device of claim 10, wherein the local UE-AMBR is based on a sum of the one or more derived APN-AMBR. ### Claim 14 (depends on 11) The device of claim 11, the one or more hardware processors are further configured to the notify the derived UE-AMBR to the second RAN by initiating a subscribed quality of service (QoS) modification procedure. ### Claim 15 (depends on 14) The device of claim 14, wherein the notification of the derived UE-AMBR is a first notification and the subscribed QoS modification procedure further provides a second notification of a subscribed APN-AMBR, and wherein the first notification is provided to an enhanced node-B (eNB) of the second RAN and the second notification is provided to a serving gateway and packet data network gateway. ### Claim 16 (depends on 14) The device of claim 14, wherein the subscribed QoS modification procedure is initiated if the local UE-AMBR is different from the derived UE-AMBR.