US 12,010,089 B2Granted

EPDG selection

AssigneeMotorola Mobility LLC

InventorApostolis K. Salkintzis

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Abstract

Apparatuses, methods, and systems are disclosed for gateway selection. One apparatus identifies a country in which the apparatus is currently located and transmits a query to a DNS server if the apparatus not being located in a home country, the query identifying the country in which the apparatus is currently located and receives a query response from the DNS server. The apparatus determines that gateway selection is mandated in the country if it receives a query response containing one or more records and selects a first gateway in a VPLMN indicated by the one or more records, each record indicating a VPLMN in the country. The apparatus determines that gateway selection is not mandated in the country if the query response contains no records and selects a second gateway, the second gateway selected in a VPLMN indicated in stored gateway selection information.

Claims20

Dependent claims

A User Equipment (“UE”) for wireless communication, comprising:

at least one memory;
and
at least one processor coupled with the at least one memory and configured to cause the UE to:
transmit a domain name system (“DNS”) query request message based at least in part on a location of the UE being different than a home country, the DNS query request message indicating a country associated with the location of the UE;
receive a DNS query response message based at least in part on the DNS query request message;
receive gateway selection information from a home public land mobile network (“HPLMN”);
determine that gateway selection is not mandated for the country associated with the location of the UE based at least in part on the received DNS query response message containing no records;
and
select an evolved packet data gateway (“ePDG”) associated with a visited public land mobile network (“VPLMN”), wherein, in response to the determination that the gateway selection is not mandated, the VPLMN corresponds to a highest priority VPLMN listed in the gateway selection information and located in the country associated with the location of the UE.

6 more elements

A method performed by a User Equipment (“UE”), the method comprising:

transmitting a domain name system (“DNS”) query request message based at least in part on a location of the UE being different that a home country, the DNS query request message indicating a country associated with the location of the UE;
receiving a DNS query response message based at least in part on the DNS query request message;
receiving gateway selection information from a home public land mobile network (“HPLMN”);
determining that gateway selection is not mandated for the country associated with the location of the UE based at least in part on the received DNS query response message containing no records;
and
selecting an evolved packet data gateway (“ePDG”) associated with a visited public land mobile network (“VPLMN”), wherein, in response to the determination that the gateway selection is not mandated, the VPLMN corresponds to a highest priority VPLMN listed in the gateway selection information and located in the country associated with the location of the UE.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/700,236Filed 21 Mar 2022 · continuation
Priority: 28 Jun 2016
Published: US 2022/0217114 A17 Jul 2022
Granted: 11 Jun 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H04L 61/4511
Using standardised directories; using standardised directory access protocols: using domain name system [DNS]
H04L 61/4541
Network directories; Name-to-address mapping: directories for service discovery
H04W 48/16
Access restriction ; Network selection; Access point selection: discovering, processing access restriction or access information
H04W 48/18
Access restriction ; Network selection; Access point selection: selecting a network or a communication service

Family

Application15/194,654Parent of this continuation · filed 28 Jun 2016
Application16/813,297Parent of this continuation · filed 9 Mar 2020
US 10,587,568 B2Parent of this continuation · filed 10 Mar 2020
US 2022/0217114 A1Pre-grant publication · published 7 Jul 2022
US 11,283,756 B2Parent of this continuation
US 2017/0374018 A1Published application
US 2020/0213267 A1Published application
US 12,010,089 B2This patent

From the US filing history. Foreign family members aren’t listed.

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