# US 9,521,539 B2 · System and method for small cell gateway core network selection in a multi-operator core network environment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,521,539 B2 - Document ID: US9521539B2 - Status: Granted - Kind: B2 - Application number: 14/297,222 - Filed: 2014-06-05 - Published: 2015-12-10 - Granted: 2016-12-13 - Earliest claimed: 2014-06-05 - Assignees: Cisco Technology, Inc. - Applicants: Cisco Technology, Inc. - Inventors: Kevin L. Gorey; Mark Grayson; Santosh Ramrao Patil - Web page: https://patentgrep.com/patent/US9521539B2 ## CPC - H04W 8/12: between location registers or mobility servers - H04W 48/18: Selecting a network or a communication service - H04W 60/04: using triggered events - H04W 84/045: {using private Base Stations, e.g. femto Base Stations, home Node B} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract An example method is provided in one example embodiment and includes receiving a first communication from a user equipment (UE) for a subscriber associated with the first UE to a small cell network, wherein a plurality core networks (CNs) share resources for the small cell network; selecting a first CN from the plurality of CNs to provide services to the first subscriber via the small cell network based, at least in part, on a first Mobile Country Code (MCC) and a first Mobile Network Code (MNC) for the first subscriber; and storing, in at least one memory element, at least one association of the MCC and the MNC to the CN for use in subsequent requests from other UEs for subscribers to attach to the small cell network. ## Claims ### Claim 1 A method for a communication network comprising: receiving, for a small cell network, a first communication from a first user equipment (UE) for a first subscriber associated with the first UE, wherein a plurality core networks (CNs) share resources for the small cell network; determining that a first Mobile Country Code (MCC) and a first Mobile Network Code (MNC) for the first subscriber are not known to be associated with any of the plurality of CNs; determining a first CN from the plurality of CNs to provide services to the first subscriber via the small cell network based, at least in part, on the first MCC and the first MNC for the first subscriber; storing, in at least one memory element, at least one association of the first MCC and the first MNC to the first CN for use in subsequent communications from other UEs for other subscribers; and storing a record of one or more CNs for which the first subscriber has been denied access for use with subsequent communications from other UEs for other subscribers, wherein the record is maintained according to the MCC and the MNC for the first subscriber. ### Claim 2 (depends on 1) The method of claim 1, further comprising: determining a last visited Public Land Mobile Network (VPLMN) for the first subscriber, wherein the last VPLMN comprises a second MCC and second MNC contained in the last VPLMN; determining the first CN selected based additionally on the second MCC and second MNC contained in the last VPLMN for the first subscriber; and storing another association of the second MCC and the second MNC to the first CN, wherein the other association indicates a preferred selection of the first CN for use in subsequent communications from other UEs for other subscribers, the other UEs having a last VPLMN matching the last VPLMN determined from the first subscriber. ### Claim 3 (depends on 2) The method of claim 2, wherein the last VPLMN for the first subscriber is determined from a location area identifier (LAI) received from the first UE. ### Claim 4 (depends on 1) The method of claim 1, further comprising: receiving, for the small cell network, a second communication from a second UE for a second subscriber associated with the second UE; and selecting the first CN to provide services to the second subscriber based, at least in part, on the at least one association if a second MCC and a second MNC of the second subscriber match the first MCC and the first MNC of the first subscriber. ### Claim 5 (depends on 4) The method of claim 4, wherein the first UE and the second UE are both 3rd Generation Partnership Project (3GPP) pre-Release 6 UEs. ### Claim 6 (depends on 4) The method of claim 4, wherein the first communication or the second communication are at least one of: an attach request for at least one of the first UE and the second UE; and a location area update (LAU) for at least one of the first UE and the second UE. ### Claim 7 (depends on 1) The method of claim 1, further comprising: updating the at least one stored association of the first MCC and the first MNC to the first CN if a subsequent UE having an MCC and MNC matching the first MCC and the first MNC is denied access to the first CN. ### Claim 8 One or more non-transitory tangible media encoding logic that include instructions for execution that, when executed by a processor, is operable to perform operations comprising: receiving, for a small cell network, a first communication from a first user equipment (UE) for a first subscriber associated with the first UE, wherein a plurality core networks (CNs) share resources for the small cell network; determining that a first Mobile Country Code (MCC) and a first Mobile Network Code (MNC) for the first subscriber are not known to be associated with any of the plurality of CNs; determining a first CN from the plurality of CNs to provide services to the first subscriber via the small cell network based, at least in part, on the first MCC and the first MNC for the first subscriber; and storing, in at least one memory element, at least one association of the first MCC and the first MNC to the first CN for use in subsequent communications from other UEs for other subscribers; and storing a record of one or more CNs for which the first subscriber has been denied access for use with subsequent communications from other UEs for other subscribers, wherein the record is maintained according to the MCC and the MNC for the first subscriber. ### Claim 9 (depends on 8) The media of claim 8, the operations further comprising: determining a last visited Public Land Mobile Network (VPLMN) for the first subscriber, wherein the last VPLMN comprises a second MCC and second MNC contained in the last VPLMN; determining the first CN selected based additionally on the second MCC and second MNC contained in the last VPLMN for the first subscriber; and storing another association of the second MCC and the second MNC to the first CN, wherein the other association indicates a preferred selection of the first CN for use in subsequent communications from other UEs for other subscribers, the other UEs having a last VPLMN matching the last VPLMN determined from the first subscriber. ### Claim 10 (depends on 9) The media of claim 9, wherein the last VPLMN is determined from a location area identifier (LAI) received from the first UE. ### Claim 11 (depends on 8) The media of claim 8, the operations further comprising: receiving, for the small cell network, a second communication from a second UE for a second subscriber associated with the second UE; and selecting the first CN to provide services to the second subscriber based, at least in part, on the at least one association if a second MCC and a second MNC of the second subscriber match the first MCC and the first MNC of the first subscriber. ### Claim 12 (depends on 11) The media of claim 11, wherein the first communication or the second communication are at least one of: an attach request for at least one of the first UE and the second UE; and a location area update (LAU) for at least one of the first UE and the second UE. ### Claim 13 (depends on 8) The media of claim 8, the operations further comprising: updating the at least one stored association of the first MCC and the first MNC to the first CN if a subsequent UE having an MCC and MNC matching the first MCC and the first MNC is denied access to the first CN. ### Claim 14 An apparatus, comprising: a first Home Node B (HNB); a memory element for storing data; and a processor that executes instructions associated with the data, wherein the processor and memory element cooperate such that the apparatus is configured for: receiving, for a small cell network, a first communication from a first user equipment (UE) for a first subscriber associated with the first UE, wherein a plurality core networks (CNs) share resources for the small cell network; determining at an HNB Gateway (HNB-GW) that a first Mobile Country Code (MCC) and a first Mobile Network Code (MNC) for the first subscriber are not known to be associated with any of the plurality of CNs; determining a first CN from the plurality of CNs to provide services to the first subscriber via the small cell network based, at least in part, on the first MCC and the first MNC for the first subscriber; and storing, in at least one memory element, at least one association of the first MCC and the first MNC to the first CN for use in subsequent communications from other UEs for other subscribers; and storing a record of one or more CNs for which the first subscriber has been denied access for use with subsequent communications from other UEs for other subscribers, wherein the record is maintained according to the MCC and the MNC for the first subscriber. ### Claim 15 (depends on 14) The apparatus of claim 14, the apparatus being further configured for: determining a last visited Public Land Mobile Network (VPLMN) for the first subscriber, wherein the last VPLMN comprises a second MCC and second MNC contained in the last VPLMN; determining the first CN selected based additionally on the second MCC and second MNC contained in the last VPLMN for the first subscriber; and storing another association of the second MCC and the second MNC to the first CN, wherein the other association indicates a preferred selection of the first CN for use in subsequent communications from other UEs for other subscribers, the other UEs having a last VPLMN matching the last VPLMN determined from the first subscriber. ### Claim 16 (depends on 15) The apparatus of claim 15, wherein the first VPLMN is determined from a location area identifier (LAI) received from the first UE. ### Claim 17 (depends on 14) The apparatus of claim 14, the apparatus being further configured for: receiving, for the small cell network, a second communication from a second UE for a second subscriber associated with the second UE; and selecting the first CN to provide services to the second subscriber based, at least in part, on the at least one association if a second MCC and a second MNC of the second subscriber match the first MCC and the first MNC of the first subscriber. ### Claim 18 (depends on 17) The apparatus of claim 17, wherein the first UE and the second UE are both 3rd Generation Partnership Project (3GPP) pre-Release 6 UEs.